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Bootstrap 3 Collapse show state with Chevron icon
Using the core example taken from the Bootstrap 3 Javascript examples page for Collapse ,
I have been able to show the state of collapse using chevron icons.
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How to pass the value of a variable to the stdin of a command?
I'm writing a shell script that should be somewhat secure i.e. does not pass secure data through parameters of commands and preferably does not use temporary files. How can I pass a variable to the stdin of a command? Or, if it's not possible, how to correctly use temporary files for such task?
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How does PHP 'foreach' actually work?
... into a per-foreach HashPointer. After the loop body runs, the IAP will be set back to this element if it still exists. If however the element has been removed, we'll just use wherever the IAP is currently at. This scheme mostly-kinda-sort of works, but there's a lot of weird behavior you can get ou...
Escape Character in SQL Server
...ubling up the quotes).
e.g. instead of doing
DECLARE @SQL NVARCHAR(1000)
SET @SQL = 'SELECT * FROM MyTable WHERE Field1 = ''AAA'''
EXECUTE(@SQL)
try this:
DECLARE @SQL NVARCHAR(1000)
SET @SQL = 'SELECT * FROM MyTable WHERE Field1 = @Field1'
EXECUTE sp_executesql @SQL, N'@Field1 VARCHAR(10)', 'A...
How to obtain the number of CPUs/cores in Linux from the command line?
I have this script, but I do not know how to get the last element in the printout:
27 Answers
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Can't use modulus on doubles?
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How to uncompress a tar.gz in another directory
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Reshaping data.frame from wide to long format
...cify the name of the variable-column:
library(data.table)
long <- melt(setDT(wide), id.vars = c("Code","Country"), variable.name = "year")
which gives:
> long
Code Country year value
1: AFG Afghanistan 1950 20,249
2: ALB Albania 1950 8,097
3: AFG Afghanistan 1951 21,35...
Auto-loading lib files in Rails 4
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vim “modifiable” is off
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:set ma
which is short for
:set modifiable
will make a buffer modifiable. And
:set noma
does the opposite.
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