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How to randomize (or permute) a dataframe rowwise and columnwise?
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edited Apr 9 '17 at 5:37
Eric Leschinski
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How to sort a list of lists by a specific index of the inner list?
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answered Nov 13 '10 at 21:59
John La RooyJohn La Rooy
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MySQL: Set user variable from result of query
...you need to move the variable assignment into the query:
SET @user := 123456;
SELECT @group := `group` FROM user WHERE user = @user;
SELECT * FROM user WHERE `group` = @group;
Test case:
CREATE TABLE user (`user` int, `group` int);
INSERT INTO user VALUES (123456, 5);
INSERT INTO user VALUES (11...
What is the preferred syntax for initializing a dict: curly brace literals {} or the dict() function
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edited Oct 10 '19 at 2:54
BKSpurgeon
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Truncate number to two decimal places without rounding
Suppose I have a value of 15.7784514, I want to display it 15.77 with no rounding.
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How to remove a field from params[:something]
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jQuery.active function
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answered Jun 30 '10 at 10:54
Nick Craver♦Nick Craver
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jQuery append() - return appended elements
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PatternSyntaxException: Illegal Repetition when using regex in Java
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Swagga Ting
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answered Jan 5 '12 at 23:43
fgefge
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.NET Global exception handler in console application
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