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Random number generator only generating one random number
...nly Random Global = new Random();
[ThreadStatic] private static Random _local;
public int Next(int max)
{
var localBuffer = _local;
if (localBuffer == null)
{
int seed;
lock(Global) seed = Global.Next();
localBuffer = new Rand...
How do I enable EF migrations for multiple contexts to separate databases?
...Delete any existing .cs files in the Migrations folder
In SSMS, delete the __MigrationHistory system table.
Creating the initial migration:
In Package Manager Console:
Enable-Migrations -EnableAutomaticMigrations -ContextTypeName
NamespaceOfContext.ContextA -ProjectName ProjectContextIsInIfNotM...
JavaScript closure inside loops – simple practical example
...so your code would work as you expect. There are many resources, but I'd recommend 2ality's block-scoping post as a great source of information.
for (let i = 0; i < 3; i++) {
funcs[i] = function() {
console.log("My value: " + i);
};
}
Beware, though, that IE9-IE11 and Edge prior to Edge ...
Eclipse - no Java (JRE) / (JDK) … no virtual machine
I am trying to get Eclipse v3.5 (Galileo) to re-run on my computer - I have run it before with no problems, but now I keep getting this error:
...
Fast way of counting non-zero bits in positive integer
...on of the Hamming weight (if you don't mind using about 64KB of memory).
#http://graphics.stanford.edu/~seander/bithacks.html#CountBitsSetTable
POPCOUNT_TABLE16 = [0] * 2**16
for index in range(len(POPCOUNT_TABLE16)):
POPCOUNT_TABLE16[index] = (index & 1) + POPCOUNT_TABLE16[index >> 1...
Pretty printing JSON from Jackson 2.2's ObjectMapper
...a String with pretty JSON. All of the results of my Google searches have come up with Jackson 1.x ways of doing this and I can't seem to find the proper, non-deprecated way of doing this with 2.2. Even though I don't believe that code is absolutely necessary for this question, here's what I have r...
How do I add options to a DropDownList using jQuery?
...M object.
var myOptions = {
val1 : 'text1',
val2 : 'text2'
};
var _select = $('<select>');
$.each(myOptions, function(val, text) {
_select.append(
$('<option></option>').val(val).html(text)
);
});
$('#mySelect').append(_select.html());
This way we...
What is the most efficient Java Collections library? [closed]
...asurable different at all with respect to much more expensive ops like the HTTP I/O. I just felt compelled to quantify your post is all.
– Riyad Kalla
May 3 '11 at 16:24
...
Disable a Button
...
I also get an error if I change (_ sender: ) to UIButton . The error reads: Value of type '(UIButton) -> ()' has no member 'isEnabled'
– user9470831
Feb 5 '19 at 4:25
...
Bootstrap 3 offset on right not left
...o more than 12.
<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
<div class="container">
<div class="row">
<div class="col-xs-3 col-xs-offset-9">
I'm a right column of 3
</div>
</div>
...