Checks if an element like a string or an array f e.
Ruby check array empty.
In the first form if no arguments are sent the new array will be empty.
You need tedious double protection.
Will only return true if the object itself.
To the object class.
Alone is not safe.
Returns a new array.
True string empty.
True rails adds the method blank.
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If you want to check if all the strings inside an array have a specific size.
Can raise an exception if.
Do something end.
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A protip by dperrymorrow about ruby.
Ruby latest stable v2 5 5 1 note class.
Coderwall ruby python javascript front end tools ios.
You could do this.
Reject empty items from an array in ruby.
Remember your first day of learning ruby when you were told that pretty much everything is an object.
0 1 foo.
If you don t know if an object is an array or nil then using empty.
One option that does work is to check the length of the array irb main.
Object rand 0 5.
Length 1 irb main.
Recently i needed to clear an array of empty.
February 25 2016 12 25k dperrymorrow.
For example nil and are blank.
Well nil is also its own class.
Length 0 irb main.
0 1.
Words each do str return false unless str size 5 end true end words bacon orange apple all words have specific size words false.
Def all words have specific size words return false if words empty.
You need tedious double protection.
When a size and an optional default are sent an array is created with size copies of default.
1 8 6 287 0 1 8 7 72 0 1 8 7 330 0 1 9 1 378 38 1 9 2 180 14 1 9 3 125 0 1 9 3 392 0.
Length 2 as such the following will work if you want to do something if the array has elements.
How to determine if an array contains any value from another array in ruby posted by weston ganger if you need to find out if one array contains any value from another array here are a couple methods.
