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How to determine whether an object has a given property in JavaScript
How can I determine whether an object m>x m> has a defined property y , regardless of the value of m>x m>.y ?
7 Answers
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In Firebase, is there a way to get the number of children of a node without loading all the node dat
... this code tracking upvodes:
var upvotesRef = new Firebase('https://docs-em>x m>amples.firebaseio.com/android/saving-data/fireblog/posts/-JRHTHaIs-jNPLm>X m>OQivY/upvotes');
upvotesRef.transaction(function (current_value) {
return (current_value || 0) + 1;
});
For more info, see https://www.firebase.com/...
How can I remove the decimal part from JavaScript number?
...n the meantime.
Another method of truncating the fractional portion with em>x m>cellent platform support is by using a bitwise operator (.e.g |0). The side-effect of using a bitwise operator on a number is it will treat its operand as a signed 32bit integer, therefore removing the fractional component. ...
Is there a better alternative than this to 'switch on type'?
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Nem>x m>t
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python capitalize first letter only
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@Jan-PhilipGehrcke that is an em>x m>ercise for the reader. You can see in that case, s is never empty, it is always '123sa' :D
– Ali Afshar
Sep 13 '12 at 16:02
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Way to get number of digits in an int?
...See my benchmark unit test below(wich may be flawed too i am no benchmark em>x m>pert). Over a large number of runs (100 000 000), the speed is 11s to 8s on my machine hardly twice as fast.
– Jean
Aug 20 '09 at 15:36
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How to overwrite the previous print to stdout in python?
...') character to return to the start of the line without advancing to the nem>x m>t line:
for m>x m> in range(10):
print '{0}\r'.format(m>x m>),
print
The comma at the end of the print statement tells it not to go to the nem>x m>t line. The last print statement advances to the nem>x m>t line so your prompt won't overwri...
Qt: can't find -lGL error
...he error and in libgl1-... is for OpenGL, a fundamental dependency of Qt 5.m>x m>. This is a common error for devs when setting up for Qt development -- but once they install the OpenGL development lib they never see it again.
– pim>x m>elgrease
Jun 4 '15 at 23:04
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What is Weak Head Normal Form?
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I'll try to give an em>x m>planation in simple terms. As others have pointed out, head normal form does not apply to Haskell, so I will not consider it here.
Normal form
An em>x m>pression in normal form is fully evaluated, and no sub-em>x m>pression could be...
Targeting both 32bit and 64bit with Visual Studio in same solution/project
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Yes, you can target both m>x m>86 and m>x m>64 with the same code base in the same project. In general, things will Just Work if you create the right solution configurations in VS.NET (although P/Invoke to entirely unmanaged DLLs will most likely require some ...