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How do I print the type or class of a variable in Swift?
...es {
let typeLongName = _stdlib_getDemangledTypeName(variable)
let tokens = split(typeLongName, { $0 == "." })
if let typeName = tokens.last {
println("Variable \(variable) is of Type \(typeName).")
}
}
Output:
Variable 5 is of Type Int.
Variable 7.5 is of Type Double.
Var...
Determine if map contains a value for a key?
...nings, then:
template <class Key, class Value, class Comparator, class Alloc>
bool getValue(const std::map<Key, Value, Comparator, Alloc>& my_map, int key, Value& out)
{
typename std::map<Key, Value, Comparator, Alloc>::const_iterator it = my_map.find(key);
if (it ...
iOS: Convert UTC NSDate to local Timezone
...eIntervalSince1970:seconds];
NSDateFormatter* df_utc = [[[NSDateFormatter alloc] init] autorelease];
[df_utc setTimeZone:[NSTimeZone timeZoneWithName:@"UTC"]];
[df_utc setDateFormat:@"yyyy.MM.dd G 'at' HH:mm:ss zzz"];
NSDateFormatter* df_local = [[[NSDateFormatter alloc] init] autorelease];
[df_lo...
How do I change the title of the “back” button on a Navigation Bar
...er statement.
UIBarButtonItem *newBackButton =
[[UIBarButtonItem alloc] initWithTitle:@"NewTitle"
style:UIBarButtonItemStyleBordered
target:nil
action:nil];
[[self na...
Is there a performance impact when calling ToList()?
...to store the elements of the list. Arrays cannot be extended once they are allocated so List<T> will use an over-sized array to store the elements of the list. When the List<T> grows beyond the size the underlying array a new array has to be allocated and the contents of the old array ha...
XSLT equivalent for JSON [closed]
...ttp://www.w3.org/TR/xslt-30/#json
XML uses angular brackets for delimiter tokens, JSON uses braces, square brackets, ... I. e. XML's fewer token recognition comparisons means it's optimized for declarative transformation, whereas more comparisons, being like switch statement, for speed reasons assu...
Mixing Angular and ASP.NET MVC/Web api?
...
In our case we setup a token in every http request (http default single place to add it) use ASP .net MVC / web api AuthorizeAttribute to check the token and permissions, you can as well inside the web api method get that token and perform more fin...
Adding values to a C# array
...might be concerned about performance.
The most efficient method is likely allocating a new array and then using Array.Copy or Array.CopyTo. This is not hard if you just want to add an item to the end of the list:
public static T[] Add<T>(this T[] target, T item)
{
if (target == null)
...
What do querySelectorAll and getElementsBy* methods return?
... takes a string that
contains an unordered set of unique space-separated tokens
representing classes. When called, the method must return a live
NodeList object containing all the elements in the document that
have all the classes specified in that argument, having obtained the
classes by ...
Creating an instance of class
...
Allocates some dynamic memory from the free store, and creates an object in that memory using its default constructor. You never delete it, so the memory is leaked.
Does exactly the same as 1; in the case of user-defined type...