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Converting an integer to a hexadecimal string in Ruby
...nified in the Integer class.
If you are using an older ruby check the documentation of FixNum#to_s and BigNum#to_s
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Node.js Logging
Is there any library which will help me to handle logging in my Node.Js application? All I want to do is, I want to write all logs into a File and also I need an options like rolling out the file after certain size or date.
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How to force LINQ Sum() to return 0 while source collection is empty
... an exception being thrown.
Would this be possible in the query itself - I mean rather than storing the query and checking query.Any() ?
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How to check if AlarmManager already has an alarm set?
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Following up on the comment ron posted, here is the detailed solution. Let's say you have registered a repeating alarm with a pending intent like this:
Intent intent = new Intent("com.my.package.MY_UNIQUE_ACTION");
PendingIntent pendingIntent = P...
How to center align the cells of a UICollectionView?
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I think you can achieve the single line look by implementing something like this:
- (UIEdgeInsets)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout insetForSectionAtIndex:(NSInteger)section {
return UIEdgeInsetsMake(0, 1...
How to define hash tables in Bash?
...sociative array by doing:
declare -A animals
You can fill it up with elements using the normal array assignment operator. For example, if you want to have a map of animal[sound(key)] = animal(value):
animals=( ["moo"]="cow" ["woof"]="dog")
Or merge them:
declare -A animals=( ["moo"]="cow" ["w...
An example of how to use getopts in bash
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@Pithikos Good point. Common sense tells me that when invoked via -h it should return 0, upon hitting a non-existing flag it should return >0 (for the sake of simplicity I didn't differentiate between those cases and nobody forces you to print the usage text in t...
In Rails - is there a rails method to convert newlines to ?
...ee
http://api.rubyonrails.org/classes/ActionView/Helpers/TextHelper.html#method-i-simple_format
Example:
simple_format(mystring)
Note that simple_format allows basic HTML tags, but also passes text through sanitize which removes all scripts, so it should be safe for user input.
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Map vs Object in JavaScript
I just discovered chromestatus.com and, after losing several hours of my day, found this feature entry :
12 Answers
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How to allocate aligned memory only using the standard library?
... just finished a test as part of a job interview, and one question stumped me, even using Google for reference. I'd like to see what the StackOverflow crew can do with it:
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