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Checking if an object is a given type in Swift
...
In Swift 2.2 - 5 you can now do:
if object is String
{
}
Then to filter your array:
let filteredArray = originalArray.filter({ $0 is Array })
If you have multiple types to check:
switch object
{
case is String:
...
case is OtherClass:
...
d...
What is the JavaScript version of sleep()?
...16)
I think it's perfectly reasonable to want to perform an action, wait, then perform another action. If you are used to writing in multi-threaded languages, you probably have the idea of yielding execution for a set amount of time until your thread wakes up.
The issue here is that JavaScript is ...
how to detect search engine bots with php?
...
Here's a Search Engine Directory of Spider names
Then you use $_SERVER['HTTP_USER_AGENT']; to check if the agent is said spider.
if(strstr(strtolower($_SERVER['HTTP_USER_AGENT']), "googlebot"))
{
// what to do
}
...
NSUserDefaults not cleared after app uninstall on simulator
...e same group and all of them are using app groups (ON under capabilities), then you will have to remove all the apps from the device in order for the user defaults to be cleared. Since the user defaults are shared, even if one of the app is on the device then it will not be deleted, as that app wil...
Correct idiom for managing multiple chained resources in try-with-resources block?
...nowledge.
Also there's the "destruction". If there is an error condition, then you probably don't want to be flushing rubbish to a file that needs deleting (code for that not shown). Although, of course, deleting the file is also another interesting operation to do as error handling.
Generally you...
Working copy XXX locked and cleanup failed in SVN
...orce Break Locks. Additionally you can ask it to delete unversioned files. Then take an update.
– Obaid
Mar 15 '16 at 7:44
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show 6 more com...
Why does 1==1==1 return true, “1”==“1”==“1” return true, and “a...
...two operands are not of the same type, JavaScript converts the
operands, then applies strict comparison. If either operand is a
number or a boolean, the operands are converted to numbers if
possible; else if either operand is a string, the string operand is
converted to a number if possible....
How can I convert a datetime object to milliseconds since epoch (unix time) in Python?
...x_time (and so will only be using the unix_time function from this answer) then you should wrap delta.total_seconds() with int to avoid ending up with a float
– corford
Dec 30 '14 at 11:20
...
Why is null an object and what's the difference between null and undefined?
...y cast the right operand into a Boolean.
Since Boolean(null) equals false then !false === true.
So if your object is not null, but false or 0 or "", the check will pass
because:
alert(Boolean(null)) //false
alert(Boolean(0)) //false
alert(Boolean("")) //false
...
What is the purpose of backbone.js?
...
If you're going to build complex user interfaces in the browser then you will probably find yourself eventually inventing most of the pieces that make up frameworks like Backbone.js and Sammy.js. So the question is, are you building something complicated enough in the browser to merit usi...