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The modulo operation on negative numbers in Python
...nually fix it up by adding 7:
int result = (2 - N) % 7;
return result < 0 ? result + 7 : result;
(See http://en.wikipedia.org/wiki/Modulo_operator for how the sign of result is determined for different languages.)
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What are the various “Build action” settings in Visual Studio project properties and what do they do
...piled into the build output. This setting is used for code files.
Content: Allows you to retrieve a file (in the same directory as the assembly) as a stream via Application.GetContentStream(URI). For this method to work, it needs a AssemblyAssociatedContentFile custom attribute which Visual Studio g...
Can the Unix list command 'ls' output numerical chmod permissions?
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it almost can ..
ls -l | awk '{k=0;for(i=0;i<=8;i++)k+=((substr($1,i+2,1)~/[rwx]/) \
*2^(8-i));if(k)printf("%0o ",k);print}'
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improv...
Date.getDay() javascript returns wrong day
...lue returned by getDay is an integer corresponding to the day of the week: 0 for Sunday, 1 for Monday, 2 for Tuesday, and so on.
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UILabel - Wordwrap text
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302
If you set numberOfLines to 0 (and the label to word wrap), the label will automatically wrap a...
How to check if field is null or empty in MySQL?
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edited Mar 30 '18 at 5:18
answered Jul 24 '13 at 11:39
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convert '1' to '0001' in JavaScript [duplicate]
How can I convert convert '1' to '0001' in JavaScript without using any 3rd party libraries. I have done this in php using spritf: $time = sprintf('%04.0f',$time_arr[$i]);
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How to format a number 0..9 to display with 2 digits (it's NOT a date)
I'd like to always show a number under 100 with 2 digits (example: 03, 05, 15...)
5 Answers
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Ruby: How to get the first character of a string
...h more readable. For instance, this:
class String
def initial
self[0,1]
end
end
will allow you to use the initial method on any string. So if you have the following variables:
last_name = "Smith"
first_name = "John"
Then you can get the initials very cleanly and readably:
puts first...
Javascript swap array elements
... = list[y];
list[y] = list[x];
list[x] = b;
Edit hijacking top answer 10 years later with a lot of ES6 adoption under our belts:
Given the array arr = [1,2,3,4], you can swap values in one line now like so:
[arr[0], arr[1]] = [arr[1], arr[0]];
This would produce the array [2,1,3,4]. This is ...