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Difference between float and decimal data type
...lculator and try it. Logically we know 1/3 + 1/3 + 1/3 should equal 3/3rds IE: 1, but this class of rational numbers doesn't allow us to do this.The float answer is correct, but your accountant will HATE it!
– user2548100
Dec 11 '13 at 21:15
...
Detecting an undefined object property
...erty does not exist");
}
To check if the value associated with an identifier is the special value undefined, or if that identifier has not been declared. Note: this method is the only way of referring to an undeclared (note: different from having a value of undefined) identifier without an early e...
How do I Sort a Multidimensional Array in PHP [duplicate]
... this:
foreach ($mdarray as $key => $row) {
// replace 0 with the field's index/key
$dates[$key] = $row[0];
}
array_multisort($dates, SORT_DESC, $mdarray);
For PHP >= 5.5.0 just extract the column to sort by. No need for the loop:
array_multisort(array_column($mdarray, 0), SORT_...
Objective-C ARC: strong vs retain and weak vs assign
There are two new memory management attributes for properties introduced by ARC, strong and weak .
8 Answers
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How to get my IP address programmatically on iOS/macOS?
...y *addresses = [NSMutableDictionary dictionaryWithCapacity:8];
// retrieve the current interfaces - returns 0 on success
struct ifaddrs *interfaces;
if(!getifaddrs(&interfaces)) {
// Loop through linked list of interfaces
struct ifaddrs *interface;
for(interf...
“Too many values to unpack” Exception
...
For anyone that still didnt get it (ie me) this video explains the exact same thing... with words and pictures which somehow made me understand :)
– Wesley Smith
Oct 5 '16 at 8:28
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What exactly is OAuth (Open Authorization)?
...Facebook Application) access to their information (e.g. the list of your friends).
If you read it stated as plainly, I would understand your confusion. So let's go with a concrete example: joining yet another social network!
Say you have an existing GMail account. You decide to join LinkedIn. Addi...
textarea's rows, and cols attribute in CSS
...characters as you would with 'rows' and 'cols' attributes. Even works with IE6 I believe.
– Swanny
Feb 11 '14 at 21:36
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ES6 class variable alternatives
...tionally) no direct declarative way to define either prototype data properties (other than methods) class properties, or instance property
Class properties and prototype data properties need be created outside the declaration.
Properties specified in a class definition are assigned the same attribut...
Guaranteed lifetime of temporary in C++?
...
The destructor for that sort of temporaries is called at the end of the full-expression. That's the most outer expression which is not part of any other expression. That is in your case after the function returns and the value is evaluated. So, it will work all nic...