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NSUserDefaults - How to tell if a key exists
...g nil if the key doesn't exist.
func integerOptional(forKey: String) -> Int? {
return self.object(forKey: forKey) as? Int
}
/// Convenience method to wrap the built-in .double(forKey:) method in an optional returning nil if the key doesn't exist.
func doubleOptional(forKey...
What are WSDL, SOAP and REST?
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SOAP -> SOAP(Simple object access protocal) is the application level protocal created for machine to machine interaction. Protocol defines standard rules. All the parties who are using the particular protocol should adhere to the...
this.setState isn't merging states as I would expect
...Jul 21 '17 at 19:13
Ryan ShillingtonRyan Shillington
12.5k55 gold badges6666 silver badges7777 bronze badges
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nvarchar(max) vs NText
...inq2SQL code. This was to allow text columns present in indexes to be rebuilt ONLINE.
First I've known about the benefits for years, but always assumed that converting would mean some scary long queries where SQL Server would have to rebuild the table and copy everything over, bringing down my webs...
How to send objects in NIB files to front/back?
...t: Click on the object you want to move and in the menubar, select Editor > Arrangement
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How to check for an undefined or null variable in JavaScript?
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In newer JavaScript standards like ES5 and ES6 you can just say
> Boolean(0) //false
> Boolean(null) //false
> Boolean(undefined) //false
all return false, which is similar to Python's check of empty variables.
So if you want to write conditional logic around a variable, just s...
Fat models and skinny controllers sounds like creating God models [closed]
...." and that sounds more like the idea of domain object, not the 'Model' -> tomdalling.com/blog/software-design/…
– thermz
Jun 16 '13 at 10:50
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How to debug a single thread in Visual Studio?
...ad you want, in the Visual Studio Threads window (while debugging, Debug -> Windows -> Threads), Ctrl + A (to select all threads), and then Ctrl + click the thread you are currently on. You should have all threads except the one you want to debug selected.
Right-click, and choose "Freeze".
N...
Add 2 hours to current time in MySQL?
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SELECT *
FROM courses
WHERE DATE_ADD(NOW(), INTERVAL 2 HOUR) > start_time
See Date and Time Functions for other date/time manipulation.
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Is there a reason that Swift array assignment is inconsistent (neither a reference nor a deep copy)?
...s place when you perform an action that has the potential to modify the length of the array. This includes appending, inserting, or removing items, or using a ranged subscript to replace a range of items in the array.
I agree that this is a bit confusing, but at least there is a clear and simple d...