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How to sort an array of hashes in ruby
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374
Simples:
array_of_hashes.sort_by { |hsh| hsh[:zip] }
Note:
When using sort_by you need to as...
Merge Images Side by Side(Horizontally)
...0x30, 600x30, 600x30, 810x30. Their names are: 0.png, 1.png, 2.png, 3.png, 4.png, respectively.
5 Answers
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How to check if field is null or empty in MySQL?
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194
Either use
SELECT IF(field1 IS NULL or field1 = '', 'empty', field1) as field1
from tablename
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Using new line(\n) in string and rendering the same in HTML
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edited Oct 4 '16 at 0:35
Felix Kling
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How to merge a list of lists with same type of items to a single list of items?
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4 Answers
4
Active
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Return first match of Ruby regex
...nders"
=> "erik kalle johan anders erik kalle johan anders"
irb(main):004:0> names[/kalle/]
=> "kalle"
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How do I modify a MySQL column to allow NULL?
MySQL 5.0.45
6 Answers
6
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Creating java date object from year,month,day
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JB NizetJB Nizet
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Git diff -w ignore whitespace only at start & end of lines
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461
For end of line use:
git diff --ignore-space-at-eol
Instead of what are you using currently...
Python Regex - How to Get Positions and Values of Matches
... module? For example given the pattern r'[a-z]' and the string 'a1b2c3d4' I'd want to get the positions where it finds each letter. Ideally, I'd like to get the text of the match back too.
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