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Convert boolean to int in Java
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I just did a test converting 1,000,000 random Boolean values and this method was consistently faster than that based on the ternary operator. It shaved off about 10ms.
– Mapsy
Oct 24 '14 at 13:14
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Get String in YYYYMMDD format from JS date object?
...g. in GMT+1: (new Date(2013,13, 25)).toISOString() == '2013-12-24T23:00:00.000Z'
– weberste
Dec 12 '13 at 10:23
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What's up with Java's “%n” in printf?
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In java, \n always generate \u000A linefeed character. To get correct line separator for particular platform use %n.
So use \n when you are sure that you need \u000A linefeed character, for example in networking.
In all other situations use %n
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Stripping out non-numeric characters in string
...did a simple comparison of Regex vs. LINQ on a string constructed from 100,000 GUIDs joined together (resulting in a 3,600,000 character string). Regex was consistently around half a second, whereas LINQ consistently was in the 1/10 of a second range. Basically LINQ was 5 or more times faster on ave...
Why is printing to stdout so slow? Can it be sped up?
...writing test on my machine, and with buffering, it also 0.05s here for 100,000 lines.
However, with the above modifications to write unbuffered, it takes 40 seconds to write only 1,000 lines to disk. I gave up waiting for 100,000 lines to write, but extrapolating from the previous, it would take ov...
How to convert int to char with leading zeros?
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Try this: select right('00000' + cast(Your_Field as varchar(5)), 5)
It will get the result in 5 digits, ex: 00001,...., 01234
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How to use double or single brackets, parentheses, curly braces
...to evaluate quite a lot quicker than single ones.
$ time for ((i=0; i<10000000; i++)); do [[ "$i" = 1000 ]]; done
real 0m24.548s
user 0m24.337s
sys 0m0.036s
$ time for ((i=0; i<10000000; i++)); do [ "$i" = 1000 ]; done
real 0m33.478s
user 0m33.478s
sys 0m0.000s
The braces, in ...
Can I access variables from another file?
...from first file using export.
//first.js
const colorCode = {
black: "#000",
white: "#fff"
};
export { colorCode };
Then, import the variable in second file using import.
//second.js
import { colorCode } from './first.js'
export - MDN
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How to Add a Dotted Underline Beneath HTML Text
...>
<style type="text/css">
u {
border-bottom: 1px dotted #000;
text-decoration: none;
}
</style>
</head>
<!-- Body, content here -->
</html>
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JOIN queries vs multiple queries
...id:
Single query with 5 Joins
query: 8.074508 seconds
result size: 2268000
5 queries in a row
combined query time: 0.00262 seconds
result size: 165 (6 + 50 + 7 + 12 + 90)
.
Note that we get the same results in both cases (6 x 50 x 7 x 12 x 90 = 2268000)
left joins use exponentially more m...