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What does -D_XOPEN_SOURCE do/mean?
I recently encountered some code that gcc would not compile without this arg. I checked the gcc man page, but did not find this specific option. I did find XOPEN_SOURCE , but there was little explanation of what it does.
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Batch file to delete files older than N days
...code, and others that required installing extra command line utilities to accomplish the task.
23 Answers
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Setting a WebRequest's body data
...estStream
Code example from http://msdn.microsoft.com/en-us/library/d4cek6cc.aspx
string postData = "firstone=" + inputData;
ASCIIEncoding encoding = new ASCIIEncoding ();
byte[] byte1 = encoding.GetBytes (postData);
// Set the content type of the data being posted.
myHttpWebRequest.ContentType =...
No module named setuptools
...ding/unpacking setuptools
Installing collected packages: pip, setuptools
Successfully installed pip setuptools
Cleaning up...
Sample usage:
>c:\Python33\Scripts\pip.exe install pymysql
Downloading/unpacking pymysql
Installing collected packages: pymysql
Successfully installed pymysql
Cleaning ...
What is the difference between and ?
..., followed by a country code.
What other values can follow the dash? According to w3.org "Any
two-letter subcode is understood to be a [ISO3166] country code." so
does that mean any value listed under the alpha-2 code is an accepted
value?
Yes, however the value may or may not have any ...
What are the dark corners of Vim your mom never told you about? [closed]
...the redo history if you make a change after an undo. It's just not easily accessed. There are plugins to help you visualize this, like Gundo.vim
– Ehtesh Choudhury
Nov 29 '11 at 12:09
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How to assign Profile values?
...missing, but I added Profile properties in the Web.config file but cannot access Profile. Item in the code or create a new profile.
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Why is no one using make for Java?
...h basic C, that typically "to convert a main.c file to a main.o file, run "cc main.c".
You can do that in java, but you quickly learn something.
Mostly that the javac compiler is slow to start up.
The difference between:
javac Main.java
javac This.java
javac That.java
javac Other.java
and
ja...
Parse email content from quoted reply
...mbled the thread, you can then remove the external text (such as To, From, CC, etc... lines) and you're done.
If the messages you are working with do not have the headers, you can also use similarity matching to determine what parts of an email are the reply text. In this case you're stuck with ...
What is the fastest way to compute sin and cos together?
...guru.com/forum/showthread.php?t=328669
Here is yet another example (with gcc): http://www.allegro.cc/forums/thread/588470
Hope one of them helps.
(I didn't use this instruction myself, sorry.)
As they are supported on processor level, I expect them to be way much faster than table lookups.
Edit:...