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How to detect if a variable is an array
...efore, it might be a good idea to check if the object has a property named 0 instead, which can be done via one of these checks:
typeof obj[0] !== 'undefined' // false negative for `obj[0] = undefined`
obj.hasOwnProperty('0') // exclude array-likes with inherited entries
'0' in Object(obj) // inclu...
Execution failed app:processDebugResources Android Studio
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108
For me it helped to change the version of buildTools to:
buildToolsVersion "21.0.1"
You will...
Requirejs why and when to use shim config
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110
A primary use of shim is with libraries that don't support AMD, but you need to manage their dep...
How to select lines between two marker patterns which may occur multiple times with awk/sed
... to trigger the print when necessary:
$ awk '/abc/{flag=1;next}/mno/{flag=0}flag' file
def1
ghi1
jkl1
def2
ghi2
jkl2
How does this work?
/abc/ matches lines having this text, as well as /mno/ does.
/abc/{flag=1;next} sets the flag when the text abc is found. Then, it skips the line.
/mno/{f...
How to compare DateTime in C#?
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MSDN: DateTime.Compare
DateTime date1 = new DateTime(2009, 8, 1, 0, 0, 0);
DateTime date2 = new DateTime(2009, 8, 1, 12, 0, 0);
int result = DateTime.Compare(date1, date2);
string relationship;
if (result < 0)
relationship = "is earlier than";
else if (result == 0)
rel...
What are the differences between double-dot “..” and triple-dot “…” in Git commit ranges?
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answered Jan 20 '09 at 20:46
PieterPieter
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What's the difference between returning void and returning a Task?
...ippert
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Explicitly select items from a list or tuple
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list( myBigList[i] for i in [87, 342, 217, 998, 500] )
I compared the answers with python 2.5.2:
19.7 usec: [ myBigList[i] for i in [87, 342, 217, 998, 500] ]
20.6 usec: map(myBigList.__getitem__, (87, 342, 217, 998, 500))
22.7 usec: itemgetter(87, 342, 217, 998, 500)...
What happens to a declared, uninitialized variable in C? Does it have a value?
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10 Answers
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How to make Git pull use rebase by default for all my repositories?
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edited Oct 18 '18 at 18:30
answered Dec 20 '12 at 14:45
Pa...