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Map vs Object in JavaScript
... track of size for an Object.
Use maps over objects when keys are unknown until run time, and when
all keys are the same type and all values are the same type.
Use objects when there is logic that operates on individual elements.
https://developer.mozilla.org/en-US/docs/Web/JavaScript...
How can I center a div within another div? [duplicate]
...
Now just define your
#main_content text-align:center and define your #container display:inline-block;
as like this:
#main_content {
text-align: center;
}
#container{
display: inline-block;
vertical-align: top;
}
...
Are Java static calls more or less expensive than non-static calls?
... However, In the case static methods fit the design well, it is useful to know they are at least as fast, if not faster than instance methods and should not be ruled out on a performance basis.
– Will
Oct 21 '17 at 13:11
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What are the applications of binary trees?
...o. This gives us the next greatest value of the node we want to delete.
Now we copy all of 18's contents, except for the left and right pointers, and delete the original 18 node.
To create these images, I implemented an AVL tree, a self balancing tree, so that at any point in time, the tree ...
Git for beginners: The definitive practical guide
...ignore your current location and use the repository at $GIT_DIR. I should know, I lost an hour to that yesterday.
– sanmiguel
Mar 1 '12 at 12:17
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Split a string at uppercase letters
... +1: For first to get ABC working. I've also updated my answer now.
– Mark Byers
Feb 17 '10 at 0:19
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How to validate an email address using a regular expression?
...me web page as was the address.
Confirmation tokens are the only way to know you got the address of the person entering it. This is why most mailing lists now use that mechanism to confirm sign-ups. After all, anybody can put down president@whitehouse.gov, and that will even parse as legal, but it...
Calling a JavaScript function named in a variable [duplicate]
...
I'd avoid eval.
To solve this problem, you should know these things about JavaScript.
Functions are first-class objects, so they can be properties of an object (in which case they are called methods) or even elements of arrays.
If you aren't choosing the object a function b...
How do I list all files of a directory?
...ob.glob("../train/*.png") will give me an array of my paths, as long as I know the name of the folder. So cool!
– Jennifer Crosby
Mar 14 at 4:06
add a comment
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Get keys from HashMap in Java
...
This is doable, at least in theory, if you know the index:
System.out.println(team1.keySet().toArray()[0]);
keySet() returns a set, so you convert the set to an array.
The problem, of course, is that a set doesn't promise to keep your order. If you only have one...