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How do you convert a byte array to a hexadecimal string, and vice versa?
...1.1X faster)
Sentence: 17.95 (2.2X faster)
Array.ConvertAll (using string.Concat, requires .NET 4.0) (via Will Dean)
Text: 752,078.70 (1.0X faster)
Sentence: 18.28 (2.2X faster)
{StringBuilder}.AppendFormat (using foreach) (via Tomalak)
Text: 672,115.77 (1.1X faster)
Sentence: 36.82 (1.1X fast...
console.log timestamps in Chrome?
...
I convert arguments to Array using Array.prototype.slice so that I can concat with another Array of what I want to add, then pass it into console.log.apply(console, /*here*/);
var log = function () {
return console.log.apply(
console,
['['+new Date().toISOString().slice(11,-...
Convert int to string?
... containing your integer; and then create a 3rd string that contains the 2 concated. string.Format("xyz{0}", i); on the other hand, is able to produce just 2 strings - as it's concatting them inline. This performance becomes more noticeable as the strings get longer.
– UKMonk...
Using Java 8 to convert a list of objects into a string obtained from the toString() method
...ry:
String s = list.stream().map(e -> e.toString()).reduce("", String::concat);
Explanation: map converts Integer stream to String stream, then its reduced as concatenation of all the elements.
Note: This is normal reduction which performs in O(n2)
for better performance use a StringBuilder ...
Strangest language feature
...
+ for string concatenation is horrible
– Matteo Riva
Jan 3 '10 at 16:42
416
...
Use of .apply() with 'new' operator. Is this possible?
...
small fix : instead of [null,arr] - [null].concat(arr)
– Royi Namir
Mar 11 '14 at 7:57
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show 16 more commen...
How do I convert from BLOB to TEXT in MySQL?
...
This works great for those GROUP_CONCATs that convert your output to blobs and you really want them as strings. I had an issue similar to the OP's while using Node.JS with the node-mysql library - this fixed all group_concat issues.
– m...
Insert text with single quotes in PostgreSQL
...ifier %L is equivalent to quote_nullable().
Like: format('%L', string_var)
concat() or concat_ws() are typically no good as those do not escape nested single quotes and backslashes.
share
|
improve...
How to measure time taken by a function to execute
...uary 1, 1970.
ex.
var start = new Date().getTime();
for (i = 0; i < 50000; ++i) {
// do something
}
var end = new Date().getTime();
var time = end - start;
alert('Execution time: ' + time);
share
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...
Can I specify a custom location to “search for views” in ASP.NET MVC?
...zorEngine.MasterLocationFormats = razorEngine.MasterLocationFormats
.Concat(new[] {
"~/custom/path/{0}.cshtml"
}).ToArray();
razorEngine.PartialViewLocationFormats = razorEngine.PartialViewLocationFormats
.Concat(new[] {
"~/custom/path/{1}/{0}.cshtml", // ...