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Conditionally Remove Dataframe Rows with R [duplicate]
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Actually, a simpler way of viewing it is: foo.isolated <- subset(foo, !(sid == "sid104" & game.num == 7))
– WGray
Aug 6 '15 at 21:01
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Can I run javascript before the whole page is loaded?
... script execution is complete (because the script might do document.write calls to output markup that the parser should handle).
That's the default behavior, but you have a few options for delaying script execution:
Use JavaScript modules. A type="module" script is deferred until the HTML has bee...
Why do I need to do `--set-upstream` all the time?
...he one at origin in the same way as git branch --set-upstream does.
Personally, I think it's a good thing to have to set up that association between your branch and one on the remote explicitly. It's just a shame that the rules are different for git push and git pull.
1 It may sound silly, but ...
Best approach to real time http streaming to HTML5 video client
I'm really stuck trying to understand the best way to stream real time output of ffmpeg to a HTML5 client using node.js, as there are a number of variables at play and I don't have a lot of experience in this space, having spent many hours trying different combinations.
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How do you run a command for each line of a file?
...teractive processing (sample)
Regarding the OP request: running chmod on all targets listed in file, xargs is the indicated tool. But for some other applications, small amount of files, etc...
Read entire file as command line argument.
If your file is not too big and all files are well named (w...
Moving and vanishing lines of code; trouble with Eclipse's XML Editor
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This bug is (finally) fixed in ADT 21. The fix is now available in ADT 21 Preview 9, posted a few minutes ago, here: https://android-review.googlesource.com/#/c/44936/1
The reason you get weird visual artifacts is that if a file contains br...
How do I create a file AND any folders, if the folders don't exist?
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You can blindly call Directory.CreateDirectory without the Directory.Exists check first - it won't throw if the directory is already there.
– Tim Robinson
Jul 8 '10 at 8:14
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Set cookie and get cookie with JavaScript [duplicate]
...okie = name +'=; Path=/; Expires=Thu, 01 Jan 1970 00:00:01 GMT;';
}
Now, calling functions
setCookie('ppkcookie','testcookie',7);
var x = getCookie('ppkcookie');
if (x) {
[do something with x]
}
Source - http://www.quirksmode.org/js/cookies.html
They updated the page today so everything in th...
How can I implode an array while skipping empty array items?
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You can use array_filter():
If no callback is supplied, all entries of input equal to FALSE (see converting to boolean) will be removed.
implode('-', array_filter($array));
Obviously this will not work if you have 0 (or any other value that evaluates to f...
case-insensitive list sorting, without lowercasing the result?
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In Python 3.3+ there is the str.casefold method that's specifically designed for caseless matching:
sorted_list = sorted(unsorted_list, key=str.casefold)
In Python 2 use lower():
sorted_list = sorted(unsorted_list, key=lambda s: s.lower())
It works for both normal and unicode strin...