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How to convert a string to integer in C?
... wrong as unsafe. atoi() works if input is valid. But what if you do atoi("cat")? strtol() has defined behavior if the value cannot be represented as a long, atoi() does not.
– Daniel B.
Jul 22 '15 at 19:13
...
Difference between fmt.Println() and println() in Go
...
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| $file...
What is the difference between square brackets and parentheses in a regex?
...uestion uses keyword var in code, this probably is JavaScript). The use of php which runs on PCRE for preg matching will optimize away the lack of backtracking, however we're not in PHP either, so using classes [] instead of alternations | gives performance bonus as the match does not backtrack, and...
Can git operate in “silent mode”?
...e)
if ! git "$@" </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...
Is this a “good enough” random algorithm; why isn't it used if it's faster?
...have distinctly un-uniform output.
Inspired by this article about how bad php's rand() function is, I made some random matrix images using QuickRandom and System.Random. This run shows how sometimes the seed can have a bad effect (in this case favouring lower numbers) where as System.Random is pret...
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...