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Eclipse / Android : “Errors running builder 'Android Pre Compiler' on project…”
...(File > New > Project, Android Project from Existing Code). If it is now named incorrectly, right click it > Refactor > Rename. This fixed the issue for me.
– Glenn Schmidt
Jan 30 '13 at 4:05
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What does the PHP error message “Notice: Use of undefined constant” mean?
...sage is due to the unfortunate fact that PHP will implicitly declare an unknown token as a constant string of the same name.
That is, it's trying to interpret this (note the missing quote marks):
$_POST[department]
The only valid way this would be valid syntax in PHP is if there was previously ...
Windows can't find the file on subprocess.call()
... these three functions comprised the high level API to subprocess. You can now use run() in many cases, but lots of existing code calls these functions."
SO: instead of subprocess.call use subprocess.run for Python 3.5 and above
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Fastest way to check if string contains only digits
I know a few ways how to check this.
regex, int.parse , tryparse ,looping.
18 Answers
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variable === undefined vs. typeof variable === “undefined”
...d trigger the error "foo is not defined".
For local variables (which you know are declared somewhere), no such error would occur, hence the identity check.
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What is Normalisation (or Normalization)?
...hn
2 | Ford 2 | Sue
2 | Cadillac
Now it may seem like we still have redundant data because the UserId's are repeated; However the PK/FK constraint ensures that the values cannot be updated independently, so integrity is safe.
Is it important? Yes, it is ver...
Display an array in a readable/hierarchical format
...an pass true as the second parameter to print_r to get the data as string. Now you can return '<pre>'.print_r(User::all(), true); from your routes file.
– DutGRIFF
Nov 5 '14 at 19:43
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Combating AngularJS executing controller twice
...xecuted twice. All I did was remove the ng-controller in the template and now its only executing once.
– torbenrudgaard
May 20 '17 at 7:35
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How to use performSelector:withObject:afterDelay: with primitive types in Cocoa?
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just a side note for those who dont know, we start adding arguments from index 2 because index 0 and 1 are reserved for hidden arguments "self" and "_cmd".
– Vishal Singh
May 15 '13 at 6:20
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Why is setTimeout(fn, 0) sometimes useful?
...(say takes 3 min)
Prints the results of calculation into the result div.
Now, your users start testing this, click "do something" button, and the page sits there doing seemingly nothing for 3 minutes, they get restless, click the button again, wait 1 min, nothing happens, click button again...
T...