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What is the yield keyword used for in C#?
...
The yield keyword actually does quite a lot here.
The function returns an object that implements the IEnumerable<object> interface. If a calling function starts foreaching over this object, the function is called again until it "yields". Th...
How to remove an HTML element using Javascript?
...em);
return false;
}
But you don't need (or want) a form for that at all, not if its sole purpose is to remove the dummy div. Instead:
HTML:
<input type="button" value="Remove DUMMY" onclick="removeDummy()" />
JavaScript:
function removeDummy() {
var elem = document.getElementBy...
What exactly does the “u” do? “git push -u origin master” vs “git push origin master”
...h> makes things unambiguous. If you leave off the remote or branch git falls back on the branch config settings, which are set for you with git push -u.
– dahlbyk
Apr 18 '11 at 2:12
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how do I check in bash whether a file was created more than x time ago?
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@Guss right solution is to install coretutils with brew. :-)
– Erik Johansson
Feb 14 '15 at 23:29
1
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How do I select a merge strategy for a git rebase?
...ch is "ours". May seem counterintuitive, but once you realize what is actually happening, it makes sense.
– patrikbeno
Nov 2 '15 at 15:21
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HTML5 textarea placeholder not appearing
...ayed since the input area contains content (a newline character is, technically, valid content).
Good:
<textarea></textarea>
Bad:
<textarea>
</textarea>
Update (2020)
This is not true anymore, according to the HTML5 parsing spec:
If the next token is a U+000A LINE FEED (LF)...
Android basics: running code in the UI thread
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None of those are precisely the same, though they will all have the same net effect.
The difference between the first and the second is that if you happen to be on the main application thread when executing the code, the first one (runOnUiThread()) will execute the Runnable imme...
How to remove leading zeros from alphanumeric text?
...re 0 characters (you could use 0+ as well). The replaceFirst just replaces all those 0 characters at the start with nothing.
And if, like Vadzim, your definition of leading zeros doesn't include turning "0" (or "000" or similar strings) into an empty string (a rational enough expectation), simply p...
Detach (move) subdirectory into separate Git repository
...br2 br3; do git branch -t $i origin/$i; done
git remote rm origin
or for all remote branches:
cd /ABC
for i in $(git branch -r | sed "s/.*origin\///"); do git branch -t $i origin/$i; done
git remote rm origin
Now you might want to also remove tags which have no relation with the subproject; you ...
How to configure postgresql for the first time?
I have just installed postgresql and I specified password x during installation.
When I try to do createdb and specify any password I get the message:
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