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Is there a “null coalescing” operator in JavaScript?
...aScript.
Clarification
Regardless of the type of the first operand, if casting it to a Boolean results in false, the assignment will use the second operand. Beware of all the cases below:
alert(Boolean(null)); // false
alert(Boolean(undefined)); // false
alert(Boolean(0)); // false
alert(Boolea...
Meaning of 'const' last in a function declaration of a class?
... that is often broken and easily broken.
foobar& fbNonConst = const_cast<foobar&>(fb1);
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How to replace all occurrences of a character in string?
...td::string::replace() instead of std::replace()! 'x' (char) is implicitely casted to size_t [value 120], thus the whole string or or part of it will be filled up with 120 copies of 'y'.
– IBue
Feb 19 '15 at 18:41
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is there a post render callback for Angular JS directive?
... }
}
}
}
}]);
Note: Instead of just casting the myContent variable to bool at my-directive-watch attribute one could imagine any arbitrary expression there.
Note: Isolating the scope like in the above example can only be done once per element - trying to do th...
How to do a regular expression replace in MySQL?
...t and I don't know if you have a multibyte charset as your default: select cast( T.R as char) COLLATE utf8_unicode_ci from (select preg_replace('/ä/', '', 'öõüä') R ) T
– gillyspy
Feb 9 '14 at 19:46
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Zipping streams using JDK8 with lambda (java.util.stream.Streams.zip)
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Unless I'm missing something, there is no need for any cast (e.g. to Spliterator<A>).
– jub0bs
Aug 11 '16 at 14:41
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Difference between 'new operator' and 'operator new'?
...own container, you can call operator new directly, like:
char *x = static_cast<char *>(operator new(100));
It's also possible to overload operator new either globally, or for a specific class. IIRC, the signature is:
void *operator new(size_t);
Of course, if you overload an operator new...
How to implement onBackPressed() in Fragments?
...mixing safe calls (.?) and enforcing non-nulls (!!) can lead to NPEs - the cast is not always safe. I'd rather write if ((fragment as? IOnBackPressed)?.onBackPressed()?.not() == true) { ... } or more kotliney (fragment as? IOnBackPressed)?.onBackPressed()?.not()?.let { ... }
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Key existence check in HashMap
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1+ for primitive types as value unnecessary cast is not required using this answer
– Prashant Bhanarkar
Sep 23 '16 at 9:53
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Concept behind these four lines of tricky C code
...in(--x[1], (char **)++y);
}
putchar(*--y);
}
Now we have lots of casting, passing arguments to (recursive) main that are completely ignored (but evaluation to get the increment and decrement are utterly crucial), and of course that completely arbitrary looking number to cover up the fact t...