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How to make a class conform to a protocol in Swift?
...nform to protocol 'NSObjectProtocol'
You have to make your class inherit from NSObject to conform to the NSObjectProtocol. Vanilla Swift classes do not. But many parts of UIKit expect NSObjects.
class CustomDataSource : NSObject, UITableViewDataSource {
}
But this:
Type 'CellDatasDataSourc...
How can I make PHP display the error instead of giving me 500 Internal Server Error [duplicate]
...ven after doing all that I still get the 500 error... perhaps it is coming from IIS?
– Kolob Canyon
Oct 12 '17 at 22:52
...
Delete last char of string
...th - 1);
MSDN:
String.Remove(Int32):
Deletes all the characters from this string beginning at a specified
position and continuing through the last position
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Case-insensitive search
...
Yeah, use .match, rather than .search. The result from the .match call will return the actual string that was matched itself, but it can still be used as a boolean value.
var string = "Stackoverflow is the BEST";
var result = string.match(/best/i);
// result == 'BEST';
if ...
How to properly seed random number generator
...next random integer.
Move the rand.Seed(time.Now().UTC().UnixNano()) line from the randInt function to the start of the main and everything will be faster.
Note also that I think you can simplify your string building:
package main
import (
"fmt"
"math/rand"
"time"
)
func main() {
...
Why is there “data” and “newtype” in Haskell? [duplicate]
...
From application point of view, since newtype is a new name of an existing type, it is used to implement multiple instances of a class for that same underlying type. Now compiler won't complain if you attempt to define instan...
Is there a “null coalescing” operator in JavaScript?
...are considered NOT NULL and therefore count as actual values. If you come from a .net background, this will be the most natural feeling solution.
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Maven2 property that indicates the parent directory
...ou build the whole project or a sub-module.
It works whether you run maven from the root folder or a sub-module.
There's no need to set a relative path property in each and every sub-module!
The plugin lets you set a property of your choice to the absolute-path of any of the project's modules. In ...
Clone Object without reference javascript [duplicate]
..." + B.a); // 25 30 40
This creates a new object in A and B that inherits from obj. This means that you can add properties without affecting the original.
To support legacy implementations, you can create a (partial) shim that will work for this simple task.
if (!Object.create)
Object.create ...
What is Type-safe?
...n be a bit of both: some statically typed languages allow you to cast data from one type to another, and the validity of casts must be checked at runtime (imagine that you're trying to cast an Object to a Consumer - the compiler has no way of knowing whether it's acceptable or not).
Type-safety doe...