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Difference between fmt.Println() and println() in Go
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Interesting Example:
➜ netpoll git:(develop) ✗ cat test.go
package main
import "fmt"
func main() {
a := new(struct{})
b := new(struct{})
println(a, b, a == b)
c := new(struct{})
d := new(struct{})
fmt.Printf("%v %v %v\n",...
How to trim whitespace from a Bash variable?
...e:]]*\$//g'" to your ~/.profile allows you to use echo $SOMEVAR | trim and cat somefile | trim.
– instanceof me
Mar 19 '13 at 15:59
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Really Cheap Command-Line Option Parsing in Ruby
... require 'getopts', mainly due to the awesomeness that is OptionParser:
% cat temp.rb
require 'optparse'
OptionParser.new do |o|
o.on('-d') { |b| $quiet = b }
o.on('-i') { |b| $interactive = b }
o.on('-f FILENAME') { |filename| $file...
Can git operate in “silent mode”?
...e)
if ! git "$@" </dev/null >$stdout 2>$stderr; then
cat $stderr >&2
rm -f $stdout $stderr
exit 1
fi
rm -f $stdout $stderr
}
This will suppress stdout and stderr, unless the git command fails. It's not pretty; in fact the stdout file is ignored...
Viewing a Deleted File in Git
...it show $(git rev-list --max-count=1 --all -- foo)^:foo
The rev-list invocation looks for all the revisions of foo but only lists one. Since rev-list lists in reverse chronological order, then what it lists is the last revision that changed foo, which would be the commit that deleted foo. (This is...
How do I parse a string into a number with Dart?
...
As per dart 2.6
The optional onError parameter of int.parse is deprecated. Therefore, you should use int.tryParse instead.
Note:
The same applies to double.parse. Therefore, use double.tryParse instead.
/**
* ...
*
* The [onError] parameter is deprecated and will be removed.
*...
Difference between return and exit in Bash functions
...return has nothing to do with exit codes. Exit codes are intended for applications/scripts, not functions. So in this regard, the only keyword that sets the exit code of the script (the one that can be caught by the calling program using the $? shell variable) is exit.
EDIT 2:
My last statement re...
Delete text in between HTML tags in vim?
...ludes the actual tags. cit which is like dit but enters insert mode after. cat which is like dat but enters insert mode after. Also di" and di( for delete inner double quote and delete inner parenthesis respectively.
– aiham
Jun 22 '12 at 0:05
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How to store standard error in a variable
...ROR=$(</tmp/Error)
The shell recognizes this and doesn't have to run 'cat' to get the data.
The bigger question is hard. I don't think there's an easy way to do it. You'd have to build the entire pipeline into the sub-shell, eventually sending its final standard output to a file, so that you...
How can I check if a key is pressed during the click event with jQuery?
I would like to catch a click event with jQuery and be able to tell if a key was pressed at the same time so I can fork within the callback function based on the keypress event.
...