You need tedious double protection.
Ruby check array empty.
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.
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.
Take notice that all elements will reference the same object default.
If you want to check if all the strings inside an array have a specific size.
Checks if an element like a string or an array f e.
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Ruby latest stable v2 5 5 1 note class.
In the first form if no arguments are sent the new array will be empty.
A protip by dperrymorrow about ruby.
For example nil and are blank.
Can raise an exception if.
Words each do str return false unless str size 5 end true end words bacon orange apple all words have specific size words false.
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.
February 25 2016 12 25k dperrymorrow.
To the object class.
Well nil is also its own class.
Do something end.
Recently i needed to clear an array of empty.
An object is blank if it s false empty or a whitespace string.
You need tedious double protection.
You could do this.
True string empty.
Alone is not safe.
One option that does work is to check the length of the array irb main.
Length 1 irb main.
Length 2 as such the following will work if you want to do something if the array has elements.
Returns a new array.
Will only return true if the object itself.
Length 0 irb main.
0 1.
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True rails adds the method blank.
Def all words have specific size words return false if words empty.
0 1 foo.
If you don t know if an object is an array or nil then using empty.
