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How do I call Objective-C code from Swift?
... and vice versa.
If you add a .swift file to an older project and get the error dyld: Library not loaded: @rpath/libswift_stdlib_core.dylib, try completely restarting Xcode.
While it was originally possible to use pure Swift classes (Not descendents of NSObject) which are visible to Objective-C by ...
What does the explicit keyword mean?
... implicit conversions. Adding it to the above class will create a compiler error at the function call DoBar (42). It is now necessary to call for conversion explicitly with DoBar (Foo (42))
The reason you might want to do this is to avoid accidental construction that can hide bugs.
Contrived examp...
Prototypical inheritance - writing up [duplicate]
... speed.
var Hamster = function(name){
if(name===undefined){
throw new Error("Name cannot be undefined");
}
this.name=name;
}
Hamster.prototype.getSpeed=function(){
return 3;
}
Hamster.prototype.run=function(){
//Russionmini does not need to implement this function as
//it will do exactl...
How to remove a column from an existing table?
... it drops the column only if it exists in the table else it will not throw error.
Instead of using big IF wrappers to check the existence of column before dropping it you can just run the above DDL statement
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...
Eclipse: Referencing log4j.dtd in log4j.xml
...j/1.2/apidocs/org/apache/log4j/xml/… you'll see that there is now an xml error
– Kip
Sep 26 '16 at 12:49
@Kip you ar...
How to detect the swipe left or Right in Android?
...wipeTypeEnum.RIGHT_TO_LEFT);
else
Log.e("SwipeDetector error","please pass SwipeDetector.onSwipeEvent Interface instance");
}
public void onLeftToRightSwipe(){
if(swipeEventListener!=null)
swipeEventListener.SwipeEventDetected(v,SwipeTypeEnum.LEFT_TO_...
Why unsigned integer is not available in PostgreSQL?
... psql gives when I try to abuse the type.
DS1=# select (346346 :: uint2);
ERROR: value for domain uint2 violates check constraint "uint2_check"
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Why is AJAX returning HTTP status code 0?
...
i have errors because of 'cross-site scripting'; what should i do?
– user3631755
Oct 8 '17 at 10:12
1
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iOS UIImagePickerController result image orientation after upload
...|
edited Mar 26 '18 at 18:05
Rishil Patel
1,88833 gold badges1010 silver badges2828 bronze badges
answer...
jQuery, simple polling example
...tion(resolve, reject) {
$.extend(opts, {
success: resolve,
error: reject
});
$.ajax(opts);
}
}
var poll = function() {
co(function *() {
return yield ajax({
url: '/my-api',
type: 'json',
method: 'post'
});
}).then(function(response) {
cons...