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typeof !== “undefined” vs. != null
...d wrap your code like this:
(function(undefined){
// undefined is now what it's supposed to be
})();
Or obtain it via the void operator:
const undefined = void 0;
// also safe
share
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impro...
How do you test functions and closures for equality?
...ound it at last.
https://gist.github.com/dankogai/b03319ce427544beb5a4
What you need is the actual function pointer and its context hidden in the function object.
func peekFunc<A,R>(f:A->R)->(fp:Int, ctx:Int) {
typealias IntInt = (Int, Int)
let (hi, lo) = unsafeBitCast(f, In...
Comparing numbers in Bash
... a program as is [. So help test gives information about that. To find out what the built-ins ([[ and (() do you should use help bash and navigate to that part.
– RedX
Mar 25 '15 at 12:20
...
Why can't I make a vector of references?
...on is required. Member access does not do that, hence the need for .get(). What timdiels wants is operator.; have a look at the latest proposals/discussions about that.
– underscore_d
Sep 30 '18 at 12:50
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How to complete a git clone for a big project on an unstable connection?
...for the information, so my problem is known and a solution is worked on... What would you recommend as a work-around?
– LaPingvino
Oct 17 '10 at 19:31
10
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How to add/update an attribute to an HTML element using JavaScript?
...
What seems easy is actually tricky if you want to be completely compatible.
var e = document.createElement('div');
Let's say you have an id of 'div1' to add.
e['id'] = 'div1';
e.id = 'div1';
e.attributes['id'] = 'div1';
e.c...
What does the JSLint error 'body of a for in should be wrapped in an if statement' mean?
...
Is indeed best dealt with via for(initialization;condition;update){
But what about:
var myarray = [];
myarray[100] = "foo";
myarray.push("bar");
Try this:
var myarray = [], i;
myarray[100] = "foo";
myarray.push("bar");
myarray[150] = "baz";
myarray.push("qux");
alert(myarray.length);
for(i in...
Why there can be only one TIMESTAMP column with CURRENT_TIMESTAMP in DEFAULT clause?
...
what can we do if the mysql dump belongs to a 5.7 version and the setup needs to be run on a 5.4
– otc
Feb 21 '16 at 12:45
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Android screen size HDPI, LDPI, MDPI [duplicate]
...and mdpi for drawables, but in the emulator there isn't any referense to what resolution hdpi is and what mdpi and ldpi are.
...
Clojure: reduce vs. apply
...shave off a fraction of a blink of an eye -- in a lot of the common cases. What follows is my rationale for believing this.
+ is itself implemented in terms of reduce for the variable-arity case (more than 2 arguments). Indeed, this seems like an immensely sensible "default" way to go for any varia...