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What is the difference between instanceof and Class.isAssignableFrom(…)?
...Yep, instanceof is a bytecode that uses essentially the same logic as checkcast (the bytecode behind casting). It will inherently be faster than the other options, regardless of degree of JITC optimization.
– Hot Licks
Jul 5 '13 at 0:11
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How to round a number to n decimal places in Java
...hat he said to be honest. allocating objects is always more expensive than casting primitives and using static methods (Math.round() as opposed to decimalFormat.format()).
– Andi Jay
Jul 10 '12 at 14:35
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PHP Difference between array() and []
...oo'=>'bar', 'baz'=>'biz']; to convert an array (using explicit type casting) to an object (stdClass) but regarding the {}, it could be implemented in future but not sure tho :-)
– The Alpha
Jan 27 '16 at 17:39
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Execute a terminal command from a Cocoa app
...should always be an NSString.
So, as long as it's not nil, the result can cast as a Swift String and returned.
If for some reason no NSString at all can be initialized from the file data, the function returns an error message. The function could have been written to return an optional String?, but...
How to check if a value exists in an array in Ruby
...ber_i(RB_BLOCK_CALL_FUNC_ARGLIST(iter, args))
{
struct MEMO *memo = MEMO_CAST(args);
if (rb_equal(rb_enum_values_pack(argc, argv), memo->v1)) {
MEMO_V2_SET(memo, Qtrue);
rb_iter_break();
}
return Qnil;
}
static VALUE
enum_member(VALUE obj, VALUE val)
{
struct MEMO *memo = MEMO...
Is if(items != null) superfluous before foreach(T item in items)?
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It is not superflous. At runtime items will be casted to an IEnumerable and its GetEnumerator method will be called. That will cause a dereferencing of items that will fail
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How can I convert bigint (UNIX timestamp) to datetime in SQL Server?
...@LocalTimeOffset
RETURN (SELECT DATEADD(second,@AdjustedLocalDatetime, CAST('1970-01-01 00:00:00' AS datetime)))
END;
GO
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What does |= (single pipe equal) and &=(single ampersand equal) mean
... for &. There's a bit more detail in a few cases regarding an implicit cast, and the target variable is only evaluated once, but that's basically the gist of it.
In terms of the non-compound operators, & is a bitwise "AND" and | is a bitwise "OR".
EDIT: In this case you want Folder.Attribu...
How to convert a Map to List in Java?
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Thanks! I was assuming the cast from Collection to List would work.
– asgs
Jun 18 '13 at 21:28
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What is a “bundle” in an Android application
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why not just directly use System.object and cast ?
– lovespring
Aug 24 '14 at 12:23
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