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Unique constraint that allows empty values in MySQL
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Yes, you can do this. See the MySQL reference (version 5.5).
A UNIQUE index creates a constraint such that all values in the index must be distinct. An error occurs if you try to add a new row with a key value that matches an existing row. For all engines, a UNIQUE index all...
How to change a DIV padding without affecting the width/height ?
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5 Answers
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Active
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Bash script processing limited number of commands in parallel
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process1 &
process2 &
process3 &
process4 &
wait
process5 &
process6 &
process7 &
process8 &
wait
For the above example, 4 processes process1 ... process4 would be started in the background, and the shell would wait until those are completed before starting the n...
Change a branch name in a Git repo
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answered Oct 5 '10 at 19:25
Richard FearnRichard Fearn
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Set EditText Digits Programmatically
...his:
<EditText
android:inputType="number"
android:digits="0123456789."
/>
From Code:
weightInput.setKeyListener(DigitsKeyListener.getInstance("0123456789."));
But, it allows the user to include several "."
See JoeyRA's answer for real numbers.
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“use database_name” command in PostgreSQL
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5 Answers
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Passing references to pointers in C++
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edited Nov 4 '15 at 1:33
gsamaras
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ADO.NET DataRow - check for column existence
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BlueRaja - Danny Pflughoeft
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answered Aug 17 '09 at 13:55
Gaurav Gaurav
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