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How do I update/upsert a document in Mongoose?
... I don't think you need the {$set: ... } part here as its automatic form my reading
– CpILL
Mar 15 '12 at 17:59
5
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“X does not name a type” error in C++
...owing how that something is defined
foo* fp;
// likewise, we can form a reference to it
void some_func(foo& fr);
// but this would be an error, as before, because it requires a definition
/* foo fooMember; */
};
struct foo // okay, now define foo!
{
int fooInt;
do...
“Add as Link” for folders in Visual Studio projects
...
it seems to do the trick but doesn't fold Form files into one, and gives errors for their .resx files (I'm using VB). Thanks anyway.
– Ivan Ferrer Villa
Nov 25 '15 at 9:49
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C/C++ line number
...s is part of C99, not all C++ compilers support it)
__DATE__ : a string of form "Mmm dd yyyy"
__TIME__ : a string of form "hh:mm:ss"
Your code will be :
if(!Logical)
printf("Not logical value at line number %d in file %s\n", __LINE__, __FILE__);
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How to clear Facebook Sharer cache?
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Just click on the Fetch new scrape information button
– IvanRF
Feb 13 '16 at 21:23
2
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How to Iterate over a Set/HashSet without an Iterator?
...,overridden toString & compareTo methods
}
The for statement has a form designed for iteration through Collections and arrays .This form is sometimes referred to as the enhanced for statement, and can be used to make your loops more compact and easy to read.
for(Person p:people){
Syste...
Ajax success event not working
I have a registration form and am using $.ajax to submit it.
16 Answers
16
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How do I use the ternary operator ( ? : ) in PHP as a shorthand for “if / else”?
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PHP 7+
As of PHP 7, this task can be performed simply by using the Null coalescing operator like this :
echo !empty($address['street2']) ?? 'Empty';
share
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impro...
How to validate a url in Python? (Malformed or not)
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This will not work for IPv6 urls, which have the form http://[2001:0DB8::3]:8080/index.php?valid=true#result
– cimnine
Feb 4 '18 at 20:42
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Remove HTML Tags in Javascript with Regex
..., and only try temp.innerText if it does not. Your browser should have the former, but for browsers that do not, the latter is used instead :)
– jsdw
Apr 20 '13 at 10:09
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