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Array vs. Object efficiency in JavaScript
...mostly faster than objects. But there is no 100% correct solution.
Update 2017 - Test and Results
var a1 = [{id: 29938, name: 'name1'}, {id: 32994, name: 'name1'}];
var a2 = [];
a2[29938] = {id: 29938, name: 'name1'};
a2[32994] = {id: 32994, name: 'name1'};
var o = {};
o['29938'] = {id: 29938, n...
C# Thread safe fast(est) counter
...
263
This would be simpler:
return Interlocked.Increment(ref COUNTER);
MSDN Interlocked.Incremen...
Linux command (like cat) to read a specified quantity of characters
...ytes. For example, to get the second 100 bytes from a file, read the first 200 with head and use tail to get the last 100:
head -c 200 file | tail -c 100
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How to pass an array within a query string?
...ch framework-specific. Some examples:
Query string:
?list_a=1&list_a=2&list_a=3&list_b[]=1&list_b[]=2&list_b[]=3&list_c=1,2,3
Rails:
"list_a": "3",
"list_b":[
"1",
"2",
"3"
],
"list_c": "1,2,3"
Angular:
"list_a": [
"1",
"2",
"3"
],
"li...
get size of json object
...script">
var myObject = {'name':'Kasun', 'address':'columbo','age': '29'}
var count = Object.keys(myObject).length;
console.log(count);
</script>
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Pry: show me the stack
...on <ActionController::ImplicitRender#send_action(method, *args)>
#2 [method] process_action <AbstractController::Base#process_action(method_name, *args)>
#3 [method] process_action <ActionController::Rendering#process_action(*arg1)>
<... clipped ...>
[2] pry(#<Pos...
Wait for page load in Selenium
How do you make Selenium 2.0 wait for the page to load?
47 Answers
47
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(Built-in) way in JavaScript to check if a string is a valid number
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How to get the CPU Usage in C#?
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208
You can use the PerformanceCounter class from System.Diagnostics.
Initialize like this:
Perf...
“A lambda expression with a statement body cannot be converted to an expression tree”
...myArray = objects.Select(o => new Obj() {
Var1 = o.someVar,
Var2 = o.var2
}).ToArray();
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