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Python: how to print range a-z?
...ependent so wasn't the best choice in the first place. I've replaced it in my answer
– John La Rooy
Aug 23 '17 at 22:23
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check if a std::vector contains a certain object? [duplicate]
...c.end(), x) runs in O(n) time, but std::set has its own find() member (ie. myset.find(x)) which runs in O(log n) time - that's much more efficient with large numbers of elements
std::set also guarantees all the added elements are unique, which saves you from having to do anything like if not contai...
Lists: Count vs Count() [duplicate]
... of the day, there's no difference which one you use for a List.
To prove my point further, here's the code from Reflector for Enumerable.Count()
public static int Count<TSource>(this IEnumerable<TSource> source)
{
if (source == null)
{
throw Error.ArgumentNull("source"...
send mail from linux terminal in one line [closed]
...ure it, and once you have done that, you can send email like this:
echo "My message" | mail -s subject user@gmail.com
See the manual for more information.
As far as configuring postfix goes, there's plenty of articles on the internet on how to do it.
Unless you're on a public server with a regi...
Uniq by object attribute in Ruby
...sort_by. So uniq_by is to uniq as sort_by is to sort. Usage:
uniq_array = my_array.uniq_by {|obj| obj.id}
The implementation:
class Array
def uniq_by(&blk)
transforms = []
self.select do |el|
should_keep = !transforms.include?(t=blk[el])
transforms << t
shou...
Command to collapse all sections of code?
...y for technical reasons; i'd gladly pay you some rep :) This is going into my regular cheatsheet
– Gishu
Sep 12 '12 at 5:56
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Verifying that a string contains only letters in C#
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If You are a newbie then you can take reference from my code .. what i did was to put on a check so that i could only get the Alphabets and white spaces! You can Repeat the for loop after the second if statement to validate the string again
bool check = false;
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Convert string[] to int[] in one line of code using LINQ
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Given an array you can use the Array.ConvertAll method:
int[] myInts = Array.ConvertAll(arr, s => int.Parse(s));
Thanks to Marc Gravell for pointing out that the lambda can be omitted, yielding a shorter version shown below:
int[] myInts = Array.ConvertAll(arr, int.Parse);
A LIN...
Animation CSS3: display + opacity
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Good idea, I succeeded keep display my element during the hover with animation-fill-mode but then the I mouseout, the element disappears.
– Alexis Delrieu
Dec 9 '11 at 20:57
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Visual Studio 2005/2012: How to keep first curly brace on same line?
Trying to get my css / C# functions to look like this:
8 Answers
8
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