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How do you use the “WITH” clause in MySQL?
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140
MySQL prior to version 8.0 doesn't support the WITH clause (CTE in SQL Server parlance; Subquery...
Bash script absolute path with OS X
... [[ $1 = /* ]] && echo "$1" || echo "$PWD/${1#./}"
}
realpath "$0"
This prints the path verbatim if it begins with a /. If not it must be a relative path, so it prepends $PWD to the front. The #./ part strips off ./ from the front of $1.
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UILabel text margin [duplicate]
...ng its origin won't do the trick. It would be ideal to inset the text by 10px or so on the left hand side.
38 Answers
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Rails: how do I validate that something is a boolean?
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Luca Spiller
2,01833 gold badges2222 silver badges2828 bronze badges
answered Jan 18 '11 at 7:38
Drew Dara-AbramsDre...
How to check if a model has a certain column/attribute?
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209
For a class
Use Class.column_names.include? attr_name where attr_name is the string name of yo...
How do I automatically sort a has_many relationship in Rails?
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edited Apr 10 '09 at 23:44
answered Apr 10 '09 at 21:54
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Application Loader: “Cannot proceed with delivery: an existing transporter instance is currently upl
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208
Basically, you need to clear out the transport tokens. This can happen if you were to close out...
Rails: Using build with a has_one association in rails
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edited Mar 4 '12 at 6:03
m33lky
5,97766 gold badges3434 silver badges4444 bronze badges
answered Mar...
Practical use of `stackalloc` keyword
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answered Apr 24 '09 at 10:08
Pop CatalinPop Catalin
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In Java, what does NaN mean?
...hat cause the operation to produce
some undefined result. For example,
0.0 divided by 0.0 is arithmetically undefined. Taking the square root of a
negative number is also undefined.
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