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Is there an “exists” function for jQuery?
...ata functions. I do see your point though and, for what it's worth, I just test for length > 0 anyways.
– Matthew Crumley
Jan 16 '09 at 5:42
40
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Why is String immutable in Java?
...mizes your String objects, it sees that if two objects have same value (a="test", and b="test") and thus you need only one string object (for both a and b, these two will point to the same object).
Class loading: String is used as arguments for class loading. If mutable, it could result in wrong cla...
How do I set cell value to Date and apply default Excel date format?
...DataFormat() without the creation helper and generated an Excel file in my test. Is there a downside to not using it? Thanks!
– Rashiki
Mar 28 '17 at 15:23
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What does = +_ mean in JavaScript
... it will evaluate to NaN.
It is also noted that
unary plus is the fastest and preferred way of converting something into a number
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How to dynamically compose an OR query filter in Django?
...jects.all(). Easy to mitigate by returning Article.objects.none() for that test though.
– Wil
Oct 1 '18 at 14:33
2
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Swift days between two NSDates
... end).day!
}
The naming feels more Swifty, it's one line, and using the latest dateComponents() method.
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How can I check if a scrollbar is visible?
...r(); // returns true if there's a `vertical` scrollbar, false otherwise..
tested working on Firefox, Chrome, IE6,7,8
but not working properly on body tag selector
demo
Edit
I found out that when you have horizontal scrollbar that causes vertical scrollbar to appear, this function does not work.......
Convert string to variable name in JavaScript
...
@goggin You should regex-test the argument to make sure that it's a valid name. Just evaling the argument without checking it first is ridiculously insecure.
– Šime Vidas
Apr 10 '11 at 18:54
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Generic type conversion FROM string
...ms to work for me:
public object Get( string _toparse, Type _t )
{
// Test for Nullable<T> and return the base type instead:
Type undertype = Nullable.GetUnderlyingType(_t);
Type basetype = undertype == null ? _t : undertype;
return Convert.ChangeType(_toparse, basetype);
}
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How to format a float in javascript?
...iers. Both kkyy and Christoph's solutions are wrong unfortunately.
Please test your code for number 551.175 with 2 decimal places - it will round to 551.17 while it should be 551.18 ! But if you test for ex. 451.175 it will be ok - 451.18. So it's difficult to spot this error at a first glance.
Th...