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Why have header files and .cpp files? [closed]
Why does C++ have header files and .cpp files?
9 Answers
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How to save username and password with Mercurial?
... a plain text file, it is more secure. It is bundled with TortoiseHg on Windows, and there is currently a discussion about distributing it as a bundled extension on all platforms.
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How do you tell a specific Delayed::Job to run in console?
...t remember that it won't run any other things like destroying job that was done or so on. just running the job/task.
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How do you grep a file and get the next 5 lines
How do I grep a file for 19:55 and get the Line 1,2,3,4,5?
3 Answers
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Rearrange columns using cut
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It's too bad cut doesn't support this intuitive re-ordering command. Anyway, another tip: you can use awk's -FS and -OFS options to use custom input and output field separators (like -d and --output-delimiter for cut).
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Disable cache for some images
... this problem that feels like a hack but is fairly portable is to add a randomly generated query string to each request for the dynamic image.
So, for example -
<img src="image.png" />
Would become
<img src="image.png?dummy=8484744" />
Or
<img src="image.png?dummy=371662" />...
How to change a Git remote on Heroku
I do not want to upload my app to the wrong domain.
7 Answers
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How can I listen to the form submit event in javascript?
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Why do people always use jQuery when it isn't necessary?
Why can't people just use simple JavaScript?
var ele = /*Your Form Element*/;
if(ele.addEventListener){
ele.addEventListener("submit", callback, false); //Modern brow...
Postgres: clear entire database before re-creating / re-populating from bash script
...the database and then re-create it. On a UNIX or Linux system, that should do it:
$ dropdb development_db_name
$ createdb developmnent_db_name
That's how I do it, actually.
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Correct way to write line to file?
I'm used to doing print >>f, "hi there"
14 Answers
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