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Ruby combining an array into one string
In Ruby is there a way to combine all array elements into one string?
3 Answers
3
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Can someone explain the traverse function in Haskell?
...user IDs to usernames looks like:
mapUserIDsToUsernames :: (Num -> IO String) -> [Num] -> IO [String]
mapUserIDsToUsernames fn ids = traverse fn ids
There's also a function called mapM:
mapM :: (Traversable t, Monad m) => (a -> m b) -> t a -> m (t b)
Any use of mapM can...
Get an OutputStream into a String
What's the best way to pipe the output from an java.io.OutputStream to a String in Java?
5 Answers
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Regex: Specify “space or start of string” and “space or end of string”
...ds.
(?<=\s|^) #to look behind the match
(stackoverflow) #the string you want. () optional
(?=\s|$) #to look ahead.
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follo...
Convert integer to string Jinja
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I found the answer.
Cast integer to string:
myOldIntValue|string
Cast string to integer:
myOldStrValue|int
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Why doesn't Ruby support i++ or i-- (increment/decrement operators)?
... @LuísSoares a.capitalize! does not reassign a, it will mutate the string that a refers to. Other references to the same string will be affected and if you do a.object_id before and after the call to capitalize, you'll get the same result (neither of which would be true if you did a = a.capi...
jQuery UI Sortable, then write order into a database
...t;/ul>
When you use the serialize option, it will create a POST query string like this: item[]=1&item[]=2 etc. So if you make use - for example - your database IDs in the id attribute, you can then simply iterate through the POSTed array and update the elements' positions accordingly.
For ...
Map to String in Java
...n(map) in Java, I get a nice output in stdout. How can I obtain this same string representation of a Map in a variable without meddling with standard output? Something like String mapAsString = Collections.toString(map) ?
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querySelector search immediate children
...an ID, and if not, they temporarily add an ID, then create a full selector string.
Basically you'd do:
var sel = '> someselector';
var hadId = true;
if( !elem.id ) {
hadID = false;
elem.id = 'some_unique_value';
}
sel = '#' + elem.id + sel;
var result = document.querySelectorAll( sel ...
How do I decode a base64 encoded string?
I am trying to "decode" this following Base64 string:
2 Answers
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