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Well, I'm trying to create a log file for info dumps and messages that are triggered during operations. The easiest way to do this (as of yet) was to simply have messages go through a print object, which displays a message in the Max window (ie: settings saved, settings loaded, error sending email). The problem is, the Max Window isn't permanent - it can be cleared, and if the program is shut down, all record is lost. So, I'm trying to get it to append all this data into a text file. I can think of two ways. 1) Have all message data simultaneously go to the max window and a text object which can write to an external file. 2) Have all data go to the max window, which is mirrored to the system console and exported using that. I actually prefer the first option, but I've had some trouble getting the strings to come together properly. I may experiment with it some more, but I wanted to try this other option as well.
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Mar 23, 2011 15:45
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Unix has a utility called 'tee', which takes standard input and writes to standard output, as well as to a file. Like this commandline: ./foo | tee foorun.txt Will run foo and print its messages to the screen. It will also write everything printed to screen, to the file foorun.txt. (This is not completely true. If the program also writes to standard error, those messages won't be redirected. In bash, you can add 2>&1 in before the |tee part, to redirect standard error to standard out.)
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Mar 23, 2011 16:09
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WrongWay Feldman posted:1) Have all message data simultaneously go to the max window and a text object which can write to an external file. This really is the best solution. Why don't you post some more details about what isn't working?
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Mar 24, 2011 03:08
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GrumpyDoctor posted:This really is the best solution. Why don't you post some more details about what isn't working? Well, I'll try. One of the main functions I need to tie in is a report of the time when events occur. I've already created the patches for that to happen. My preference is that when I output to the text file, it will read something like: On 3/15/11 at 14:22:8 -- Event Foo Happened --details on foo --that may also show up To do this, I'm attempted using the [sprintf] object, which can be used to combine symbols. For some reason though, only the time would ever appear in the printed output. At first I thought it may be due to the output of the objects info dump (like a java object I have) being a string. So I tried converting to symbol. That didn't work either. I also tried using symout to try and preserve it, since maybe it was dropping the info due to a space or something (unlikely). No luck. I can probably figure this out eventually, but the time for me to work on it is gone, I've just got a huge dump of homework from my courses, and it'll be weeks before I get a chance to really come back to this with my whole mind to work on it.
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Mar 24, 2011 03:40
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nielsm posted:In bash, you can add 2>&1 in before the |tee part, to redirect standard error to standard out. Most shells support &| as a shortcut for 2>&1 |.
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Mar 24, 2011 05:50
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defmacro posted:Most shells support &| as a shortcut for 2>&1 |. Goddamn, thats a new one on me.
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Mar 25, 2011 01:29
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This year, I am running the officer election for my university tennis club. I want to use ballotbin.com to facilitate online voting. To do so, I need to enter email addresses for my club's 204 members. I am able to download a roster with the first and last names of all members. I also have the ability to send out mass emails to the 204 members. However, I cannot export a list of everyone's email addresses. I could manually look up their email addresses in the online database. However, there must be a tech savvy way of accomplishing this. What is needed to query this database http://directory.acomp.usf.edu/?logo=1 and algorithmically write the email addresses of the 204 members to a csv or similar file so I can import them into the ballot software? Do I need to use something like Python?
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Mar 25, 2011 01:48
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Jam2 posted:Do I need to use something like Python? Yes. Don't know what a result page looks like, but unless it returns results in something crazy like a java applet, Python would probably do a fine job.
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Mar 25, 2011 02:00
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Thermopyle posted:Yes. Don't know what a result page looks like, but unless it returns results in something crazy like a java applet, Python would probably do a fine job. The site employs something that serves the result on the same page without need for a reload (like google instant). As you type, it begins to filter. Once the search has been narrowed down to 25 results, it displays them in block below the search box. I don't want to ignorantly assume it's ajax, but to the best of my understanding, ajax is what allows this. Right?
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Mar 25, 2011 02:14
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Jam2 posted:The site employs something that serves the result on the same page without need for a reload (like google instant). As you type, it begins to filter. Once the search has been narrowed down to 25 results, it displays them in block below the search box. I don't want to ignorantly assume it's ajax, but to the best of my understanding, ajax is what allows this. Right? Yeah, I just looked at it again and type some random names in there and viewed the source. I didn't feel like reading over the code, but I think it will be doable with Python.
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Mar 25, 2011 02:34
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Thermopyle posted:Yeah, I just looked at it again and type some random names in there and viewed the source. I didn't feel like reading over the code, but I think it will be doable with Python. #!/usr/bin/env python import urllib, urllib2, cookielib import time import re cj = cookielib.CookieJar() opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj)) url = 'http://directory.acomp.usf.edu/?' for name in iter(open('names.txt')): query = urllib.urlencode({'rsargs[]': [name.strip(), 3], 'rsrnd': int(time.time() * 1000.0), 'rs': 'liveSearch'}, doseq=True) resp = opener.open(url+query) name, email = re.search('td class=\\\\"leftcell\\\\">(.*?</td><td>.*?)</td>.*mailto:([^"]+)\\\\"', resp.read()).group(1,2) cleanname = re.sub('<[^>]+>', ' ', re.sub('</td><td>', ', ', name)) print cleanname, email Screenscraping is fun 
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Mar 25, 2011 10:46
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Thanks for this. I've been thinking about how I was going to tackle this problem. I now see that I definitely would not have figured it out by the time I need it (midnight tonight when polls open). I have to get the emails in the system and send out notices before then. I still feel like I can learn a lot from simply trying to interpret your code, implement it, successfully execute it on a server, etc. So, thanks. Still need some assistance from anyone willing to help to figure out some addition questions I have: How do I tell the program to essentially check off the student box? How do I then tell the program to log in using my credentials? Is time used to set a delay to allow the search engine to catch up? Why are time and re imported on new lines? Are these libraries which are included inside of the libraries on the first line or is there a different reason? Are these called libraries? The program prints the name and email. What if I wanted the program to present the emails on individual lines in a text file called emails.txt? With which versions of python is this code compatible? When I started working with python over Christmas break, I noticed there were big differences between 3 and 2.6.x (e.g. print). When I am ready to run this, should I do so from my local machine or should I execute it from a remote server? I have a Windows 2003 box if needed.
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Mar 25, 2011 12:13
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Jam2 posted:How do I tell the program to essentially check off the student box? faculty = 1 staff = 2 student = 4 Add the numbers of the boxes you want checked for the query and put the result where the 3 is. Jam2 posted:How do I then tell the program to log in using my credentials? That's what the cookiejar is for. If you can get your session outta your browser, you can put it into the jar. Another option is to do the login in the script. Locate the page that you log into, look at the field names in the form, and construct a query like the one in my script, then send that before the for loop. That should get you the cookie and put you in a state where you're allowed to search for students. Jam2 posted:Is time used to set a delay to allow the search engine to catch up? I like to import modules on separate lines as it's easier to update when it changes (if I don't need one anymore, I can just delete the entire line). You could also do import time, re, etc Jam2 posted:The program prints the name and email. What if I wanted the program to present the emails on individual lines in a text file called emails.txt? Another option is code:Jam2 posted:With which versions of python is this code compatible? When I started working with python over Christmas break, I noticed there were big differences between 3 and 2.6.x (e.g. print). Jam2 posted:When I am ready to run this, should I do so from my local machine or should I execute it from a remote server? I have a Windows 2003 box if needed.
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Mar 25, 2011 15:12
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I'm writing a small C# application that changes a registry value, but cannot figure out how to modify the registry using C#. The key I want to edit is in HKLM\Software\Microsoft\WindowsNT\CurrentVersion\WinLogon\DefaultUserName Anyone have a code snippit on how to do this? I scrapped some stuff from google, but it's crashes when ran. code:
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Mar 25, 2011 16:17
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Moey posted:The key I want to edit is in HKLM\Software\Microsoft\WindowsNT\CurrentVersion\WinLogon\DefaultUserName Are you sure your application has Administrator privileges? Writing to HKLM requires those. When you get the crash, notice what exception caused it.
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Mar 25, 2011 16:26
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Moey posted:I'm writing a small C# application that changes a registry value, but cannot figure out how to modify the registry using C#.
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Mar 25, 2011 16:27
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Moey posted:Registry Is this to do with desk moves by any chance?  Anyway, I'm not sure how much you know about C#/exceptions so if you're not sure what that's all about then run the program in debug mode in the IDE and it'll pop up an unhandled exception box with all the details.
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Mar 25, 2011 16:33
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I'm just trying to kill some time until I get to move more desks.  I'm writing this on a Win 7 machine, but it will be running on XP, so I made that registry key manually on my box just for testing. Looks like it craps out when executing that last line I posted. NullReferenceException was unhandled Object reference not set to an instance of an object. And here are details (no idea if these are helpful). code:Moey fucked around with this message at 17:20 on Mar 25, 2011 |
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Mar 25, 2011 17:03
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Looks like that key doesn't exist on the machine? But why not just use a .reg file? E: I guess it needs to be machine-/user-specific so a reg file is less than ideal unless there's a way to put variables in them.
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Mar 25, 2011 17:27
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Carthag posted:Looks like that key doesn't exist on the machine? It seems to crash the same way on the box I'm writing it on (Win 7) and my test box (XP). The key is there on its own in XP, I manually created it myself on my Win 7 box to test also. Wonder if there is something wrong with the way I am writing the path to get to that specific key. As for the reg file, that would be too easy All I'm making is a little exe that I can have on a network share, so when I do work on someones PC, I run this, enter a user name into the text box, then click the button and it changes the last logged on user to whatever I type. This avoids confusion on their end (so they don't have to type their username next time they logon), and also I can do work and reset it so they don't know I was on their PC) Moey fucked around with this message at 17:33 on Mar 25, 2011 |
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Mar 25, 2011 17:31
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I have a bit of a tricky algorithm question here. Say I have a class myClass, with two data members A and B. Now say I have a list of instances of class myClass. I want to iterate through the list and do the following test: For each previous occurrence where myClass.A is equal to the one I'm currently checking, I want to check whether myClass.B is less than or equal to the B of said occurrence. If so, I want stuff to happen. I've got it kinda working, but the algorithm is factorial so the cost is O(n!). It's hardly ideal when the list contains millions of objects. Here's psuedocode of my current implementation: code:code:
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Mar 25, 2011 18:41
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Moey posted:It seems to crash the same way on the box I'm writing it on (Win 7) and my test box (XP). The key is there on its own in XP, I manually created it myself on my Win 7 box to test also. Wonder if there is something wrong with the way I am writing the path to get to that specific key. Your problem is that the line key = Microsoft.Win32.Registry.LocalMachine.OpenSubKey... is returning null, so your attempt to then call one of key's methods fails because (like the exception says) it isn't set to an instance of an object. As to why that is I'm not sure without trying it myself.
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Mar 25, 2011 19:19
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odd2k posted:For each previous occurrence where myClass.A is equal to the one I'm currently checking, I want to check whether myClass.B is less than or equal to the B of said occurrence. If so, I want stuff to happen. I've got it kinda working, but the algorithm is factorial so the cost is O(n!). It's hardly ideal when the list contains millions of objects. quote:I'm thinking I could use a multimap, where myClass.A is the key and myClass.B the value, and then iterate through it like this.... Would something like this work? Is there a better way? You could also do a hashmap of A's, with the value being a sorted set of B's. That's about as good as you can do, algorithmically speaking.
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Mar 25, 2011 19:21
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Moey: After a bit of dicking about, here's a version which will work but only if you're running the program with administrator privileges - that's required in order to write to HKLM. Failure to do so will result in a security exception and the subkey operation returning null. Also note the second parameter to the subkey function which specifies that the key should be writeable. Caveat: I haven't actually tested this. code:Also specify "using Microsoft.Win32" at the top of your class definition so you don't have to keep typing it out. edit2: I'm not sure if you've noticed but a big problem with your original code was that you missed the space in the "Windows NT" key. 
rolleyes fucked around with this message at 19:55 on Mar 25, 2011 |
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Mar 25, 2011 19:34
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Sneftel posted:It's actually O(n^2), not O(n!). If it was factorial time, you'd never see it complete even with only fifteen instances. Yeah, I was somehow thinking the cost was 1*2*3...*n when it's actually 1+2+3...+n.  Sneftel posted:That would work fine, but it can be simpler: Just sort all the instances by A, sorting by B in the case of ties between A's. Now all the matching As are together in a block, and sorted by B within that block; for each A-matched block, you just go through and do your thing for every pair of MyClasses in the block. Cool, I was thinking of sorting stuff but never gave it much thought. I'll try this method! Sneftel posted:You could also do a hashmap of A's, with the value being a sorted set of B's. That's about as good as you can do, algorithmically speaking.
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Mar 25, 2011 19:37
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You actually specifically don't want to sort on B here; the original order was important, because the magic only happens when a B value is out of descending order in the sequence of objects with like-valued As. You could use a hash or something, but probably the best approach is to do a stable sort on A, then walk each sequence of like-valued As looking for a B that's out of sequence.
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Mar 25, 2011 19:38
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rjmccall posted:You actually specifically don't want to sort on B here; the original order was important, because the magic only happens when a B value is out of descending order in the sequence of objects with like-valued As. It just so happens that my class has a third member "line" that indicates its original order. The classes basically represent lines in a text file. So sorting both A and B will work out, I think. edit: Although I might as well just sort A, and use B to identify original order. It'll require less sorting, if nothing else. odd2k fucked around with this message at 20:18 on Mar 25, 2011 |
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Mar 25, 2011 19:43
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rolleyes posted:I'm not sure if you've noticed but a big problem with your original code was that you missed the space in the "Windows NT" key. Missing details always kills me. Thanks for the help, if you were on my side of the pond I would gladly buy you a beer. Currently when I run the program, and input something, this is how the registry key changes. quote:System.Windows.Forms.TextBox, Text: WhateverUserNameITyped Not sure why that additional text is getting dumped, will have to dick around with it more tonight to figure it out.
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Mar 25, 2011 22:45
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Moey posted:Not sure why that additional text is getting dumped, will have to dick around with it more tonight to figure it out. Looks like it could be the C# equivalent of Java's toString() - you're setting the value of the key to the actual textbox, not hte contents of it. You'll probably want to call .getValue() or .getText() or whatever it is on the username you're setting, like key.SetValue("DefaultUserName", username.getValue());
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Mar 25, 2011 23:08
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Carthag posted:Looks like it could be the C# equivalent of Java's toString() - you're setting the value of the key to the actual textbox, not hte contents of it. You'll probably want to call .getValue() or .getText() or whatever it is on the username you're setting, like That's the first thing I tried, changed it to username.ToString(), still write the same thing to the reg key. You figure if it accepts a string as the key, and I give it a string, all would be well. I really should keep up on my programming skills.
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Mar 25, 2011 23:44
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NB: I am speaking from Objective-C/Java experience, but this seems like what is happening here.Moey posted:That's the first thing I tried, changed it to username.ToString(), still write the same thing to the reg key. You figure if it accepts a string as the key, and I give it a string, all would be well. I really should keep up on my programming skills. ToString() is implicitly called on the object when the object is being accessed in a string context (such as printing or apparently setting a value in a registry key). TextBox.ToString() will return a string describing that it is a textbox, and what its value is. So you shouldn't call ToString() unless you want that. A quick google says that you can access the contents through the Text property, so: key.SetValue("DefaultUserName", username.Text); Assuming username is your TextBox.
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Mar 25, 2011 23:58
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What you want is to use username.Text instead of username.ToString() e: Wow holy dooley thanks for loading the cached version of the page, Firefox
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Mar 26, 2011 00:12
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Just to explain this for Moey's benefit, the reason for this behaviour comes down to objects. Let's say your text box is called "userName". UserName is the name of the instance of the TextBox class representing the text box on the form and, like any class, it has various methods and properties. In C# every class1 has a method call ToString, because every class is derived from the System.Object object which contains that method. As Carthag has explained, because C# knows every class has a ToString method it will accept the name of an object in place of a string value and automatically call ToString instead. The default behaviour of ToString is just to give the name of the object and sometimes a few other details, which is what you're seeing when you pass your userName object to SetValue. As has been mentioned the "text" property returns a string containing the text currently in userName text box. If, for example, you used userName.name instead then you'd get a string containing the name of the userName text box. The documentation for the TextBox class is here or you can poke around in the intellisense list in Visual Studio to find out about the provided methods and properties. 1: Not true for static classes but explaining static vs. dynamic is a whole lot of extra typing. rolleyes fucked around with this message at 08:07 on Mar 26, 2011 |
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Mar 26, 2011 07:36
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rolleyes posted:As Carthag has explained, because C# knows every class has a ToString method it will accept the name of an object in place of a string value and automatically call ToString instead. Not exactly, TextBox just has an implicit cast to string method that returns the value of ToString(). Say you start a new console program, then make a class called testclass and add a ToString() override to it. If you just do this: code:code:
Mr.Hotkeys fucked around with this message at 08:27 on Mar 26, 2011 |
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Mar 26, 2011 07:53
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As much as I'd like to accept your excuse I actually just had a brainfart so yeah, listen to Mr.Hotkeys for that part of the explanation. The bit about ToString always being present is right though, so you can rely on it being there when writing code. edit: I also wasn't actually aware that the IDE uses ToString for watches, locals etc although it makes sense now that you mention it. Of course, I had to test it. code:rolleyes fucked around with this message at 08:38 on Mar 26, 2011 |
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Mar 26, 2011 08:14
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(C# + crystal reports, loading up 12 different reports, running up to five selection formulars on each report, then exporting to PDF) Augh, FML. Spent three hours trying to figure out why my reports weren't working properly. Turns out there's a big difference between Report.Refresh() and Report.RefreshReport().  Aaaanyway. Got nearly everything working. The only problem is that, as far as I can tell, there's no way from the program side to see if there's any data in the report. Which is a bit of a problem, since of the ~50 reports I generate, up to half of them can be blank (and I'd really like to not export those). What am I missing? (The ReportDocument class has a Rows member, but it doesn't have anything useful. IDGI.) e: Sounds like I have to connect to the database from my application, put together a DataSet and if that's not empty feed it to the report. gently caress. My. Life. Who designed this poo poo? Thel fucked around with this message at 09:09 on Mar 26, 2011 |
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Mar 26, 2011 08:54
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I may be missing something here, or I didn't explain properly. (Probably missing something...) From my program, my textbox is called textBox1, on event (button click) I call String username = textBox1.ToString() So that is dumping whatever is in my textbox to the string username. From stuff I have done in the past, I shouldn't have to add anything when I use username as a parameter if it requires a string. Here is my current tiny chunk of code. code:Moey fucked around with this message at 15:36 on Mar 26, 2011 |
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Mar 26, 2011 15:26
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Moey posted:From my program, my textbox is called textBox1, on event (button click) I call String username = textBox1.ToString() Nonono, the contents of the text box, which is what you want, is retrieved by textBox1.Text. You do not want to call ToString(). The ToString() method is generally mostly useful for debugging, as a way of getting some description useful for debugging out of the object. You shouldn't be using it for actual problem solving.
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Mar 26, 2011 15:30
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nielsm posted:Nonono, the contents of the text box, which is what you want, is retrieved by textBox1.Text. Thanks, that was it. key.SetValue("DefaultUserName", textBox1.Text); Feeling pretty dumb about this right now. I feel like I have used .ToString() in the past to get text from text boxes. And then have used that string to dump the text into different things. My brain may just be turning into applesauce. Thanks all.
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Mar 26, 2011 15:40
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To reiterate, ToString() is a method inherited by all classes from the System.Object base class which (by default) returns a string containing a basic description of the class. The Text property of the TextBox class allows you to retrieve (and also to set) the string contained in the text box - this is the one you want. If you're planning on doing much work with C# I'd suggest picking up a foundation book because you need to learn a bit more about some of the concepts and how the .NET library works. I've recommended this one to people before with favourable results. Plus the guy's name is Sharp!
rolleyes fucked around with this message at 15:46 on Mar 26, 2011 |
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Mar 26, 2011 15:40
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