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How to properly seed random number generator
...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() {
rand.Seed(time.Now().UTC().UnixNano())
fmt.Println(randomString(10))
}
func randomString(l int) s...
How much of a git sha is *generally* considered necessary to uniquely identify a change in a given c
... for a commit in a Git repository, and you want it to be short enough to make your eyes not bleed, but long enough that the chance of it colliding would be negligible, how much of the SHA substring is generally required?
...
How to get city name from latitude and longitude coordinates in Google Maps?
...
gprathour
12.3k44 gold badges5151 silver badges7979 bronze badges
answered Feb 19 '10 at 13:03
cchenesonccheneson
...
Clone Object without reference javascript [duplicate]
...t
var obj = {a: 25, b: {a: 1, b: 2}, c: 75};
var A = _.merge({}, obj, {newkey: "newvalue"});
Or you can use jQuerys extend method:
var obj = {a: 25, b: 50, c: 75};
var A = $.extend(true,{},obj);
Here is jQuery 1.11 extend method's source code :
jQuery.extend = jQuery.fn.extend = function() {
...
Hidden Features of Java
...
Double Brace Initialization took me by surprise a few months ago when I first discovered it, never heard of it before.
ThreadLocals are typically not so widely known as a way to store per-thread state.
Since JDK 1.5 Java has had extremely well implemente...
Django auto_now and auto_now_add
...False and therefore will not show up in the admin panel. There has been talk in the past about making the auto_now and auto_now_add arguments go away, and although they still exist, I feel you're better off just using a custom save() method.
So, to make this work properly, I would recommend not usi...
What is the purpose of the single underscore “_” variable in Python?
... deliberately ignored (Conceptually, it is being discarded.), as in code like:
label, has_label, _ = text.partition(':').
As part of a function definition (using either def or lambda), where
the signature is fixed (e.g. by a callback or parent class API), but
this particular function implementation ...
How to stop text from taking up more than 1 line?
... wrapping? I have a height, and overflow:hidden , and the text still breaks.
5 Answers
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Collections.emptyMap() vs new HashMap()
...
Sumit SinghSumit Singh
23k88 gold badges7070 silver badges9797 bronze badges
...
Build tree array from flat array in javascript
I have a complex json file that I have to handle with javascript to make it hierarchical, in order to later build a tree.
Every entry of the json has :
id : a unique id,
parentId : the id of the parent node (which is 0 if the node is a root of the tree)
level : the level of depth in the tree
...