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What is a NullReferenceException, and how do I fix it?
...t value when a null is encountered:
IService CreateService(ILogger log, Int32? frobPowerLevel)
{
var serviceImpl = new MyService(log ?? NullLog.Instance);
// Note that the above "GetValueOrDefault()" can also be rewritten to use
// the coalesce operator:
serviceImpl.FrobPowerLevel = fr...
AngularJs $http.post() does not send data
...|
edited Jul 15 '15 at 11:32
answered Nov 29 '13 at 0:45
Fe...
What does Expression.Quote() do that Expression.Constant() can’t already do?
...sure induced, if you do this you'll get a "variable 's' of type 'System.Int32' is not defined" exception on the invocation.
(Aside: I've just reviewed the code generator for delegate creation from quoted expression trees, and unfortunately a comment that I put into the code back in 2006 is still ...
How can I create a two dimensional array in JavaScript?
... |
edited Aug 14 '19 at 6:32
Adam
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How to check if field is null or empty in MySQL?
... Gleb KemarskyGleb Kemarsky
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“Notice: Undefined variable”, “Notice: Undefined index”, and “Notice: Undefined offset” using PHP
...uses the same variable name. It is also a major security risk with register_globals turned on. E_NOTICE level error is issued in case of working with uninitialized variables, however not in the case of appending elements to the uninitialized array. isset() language construct can be used to detect if...
How to generate a random number in C++?
...d
(assuming rand() itself is uniformly distributed from 0 to RAND_MAX) */
while( ( n = rand() ) > RAND_MAX - (RAND_MAX-5)%6 )
{ /* bad value retrieved so get next one */ }
printf( "%d,\t%d\n", n, n % 6 + 1 );
}
return 0;
}
^^^ THAT sequence from a sing...
How do I concatenate two arrays in C#?
...e.
– Jon Schneider
Feb 20 '15 at 19:32
1
This is what happens without the toArray() Cannot impli...
Sending multipart/formdata with jQuery.ajax
...how is it possible to send this Data to the server? The resulting array ( $_POST ) on the serverside php-script is 0 ( NULL ) when using the file-input.
...
How can I extend typed Arrays in Swift?
... |
edited May 25 at 7:32
Ramis
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