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c# why can't a nullable int be assigned null as a value [duplicate]
... to an int?. The problem is that both values returned by the ternary operator must be the same type, or one must be implicitly convertible to the other. In this case, null cannot be implicitly converted to int nor vice-versus, so an explict cast is necessary. Try this instead:
int? accom = (accomSt...
What is the difference between float and double?
...ost cases, float and double seem to be interchangeable, i.e. using one or the other does not seem to affect the results. Is this really the case? When are floats and doubles interchangeable? What are the differences between them?
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Python read-only property
...assumption that all users are consenting adults, and thus are responsible for using things correctly themselves. However, in the rare instance where it just does not make sense for an attribute to be settable (such as a derived value, or a value read from some static datasource), the getter-only pr...
Text size and different android screen sizes
...ow, it was discussed already 1000 times, but I can't adjust the text size for different screen sizes. I try to use 'sp' as size units in my custom style:
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Are global variables in PHP considered bad practice? If so, why?
...place_callback('!pattern!', array($obj, 'method'), $str);
See callbacks for more.
The point is that objects have been bolted onto PHP and in some ways lead to some awkwardness.
Don't concern yourself overly with applying standards or constructs from different languages to PHP. Another common pit...
Zoom in on a point (using scale and translate)
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The better solution is to simply move the position of the viewport based on the change in the zoom. The zoom point is simply the point in the old zoom and the new zoom that you want to remain the same. Which is to say the viewport pre-zoomed and the viewport post-zoomed have the same zoo...
Hidden features of C
...on pointers to implement, e.g., fast indirect-threaded code interpreters (FORTH) or byte-code dispatchers, or to simulate OO-like virtual methods.
Then there are hidden gems in the standard library, such as qsort(),bsearch(), strpbrk(), strcspn() [the latter two being useful for implementing a strt...
xcopy file, rename, suppress “Does xxx specify a file name…” message
... proper flag , but how would I, in one command, copy a file from one directory to another and rename it in the destination directory? Here's my command:
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What is the purpose of wrapping whole Javascript files in anonymous functions like “(function(){ … }
...hat the whole file is wrapped like the following in the .js files to be imported.
8 Answers
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Convert UTF-8 encoded NSData to NSString
...coded NSData from windows server and I want to convert it to NSString for iPhone. Since data contains characters (like a degree symbol) which have different values on both platforms, how do I convert data to string?
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