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RGB to hex and hex to RGB
...onentToHex(g) + componentToHex(b);
}
alert(rgbToHex(0, 51, 255)); // #0033ff
Converting the other way:
function hexToRgb(hex) {
var result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex);
return result ? {
r: parseInt(result[1], 16),
g: parseInt(result[2], 16)...
How to only get file name with Linux 'find'?
... answered Jul 18 '13 at 18:50
j03mj03m
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...
Regex to test if string begins with http:// or https://
...
answered Jan 10 '11 at 2:03
cdhowiecdhowie
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...
Convert HH:MM:SS string to seconds only in javascript
...
This can be done quite resiliently with the following:
'01:02:03'.split(':').reduce((acc,time) => (60 * acc) + +time);
This is because each unit of time within the hours, minutes and seconds is a multiple of 60 greater than the smaller unit. Time is split into hour minutes and sec...
Omitting the second expression when using the if-else shorthand
...|
edited Jul 26 '18 at 16:03
answered Jun 17 '12 at 6:33
aj...
How to round the minute of a datetime object
... DroidLe Droid
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11
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Parse string to DateTime in C#
...ways be in a given format then you can use ParseExact():
string s = "2011-03-21 13:26";
DateTime dt =
DateTime.ParseExact(s, "yyyy-MM-dd HH:mm", CultureInfo.InvariantCulture);
(But note that it is usually safer to use one of the TryParse methods in case a date is not in the expected format)...
How to format date and time in Android?
...
pupeno
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answered Jan 19 '09 at 8:57
JamieHJamieH
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Why are these numbers not equal?
...d Know About Floating-point Arithmetic," ACM Computing Surveys 23, 1 (1991-03), 5-48 doi>10.1145/103162.103163 (revision also available)
The Floating-Point Guide - What Every Programmer Should Know About Floating-Point Arithmetic
0.30000000000000004.com compares floating point arithmetic across p...
How to prevent ifelse() from turning Date objects into numeric objects
... dates)
str(dates)
# Date[1:5], format: "2010-12-31" "2011-01-02" "2011-01-03" "2011-01-04" "2011-01-05"
dplyr::if_else
From dplyr 0.5.0 release notes:
[if_else] have stricter semantics that ifelse(): the true and false arguments must be the same type. This gives a less surprising return type, an...
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