Title: “You Can Build Anything”
Series: Build Better Something
Duration: ~7–8 minutes
TEXT ON SCREEN:
Build Better Something
Please write a GNU autotools detection mechanism to test for `grep` on the target system, and if grep is present, detect it's capabilities to support EREs, PCREs, and the correct command line switches to put grep into that mode. | |
As autotools traditionally tests systems and/or tools for their support for individual features, to see if they are properly supported. My suggestion would be to test the grep command in four phase: | |
1. Including any possible shell builtins, find all grep variations (including`grep`, `egrep`, `fgrep`, etc.) that are defined or installed in the current shell path. | |
2. Enumerate all modal "production features" (not features like `--help` as it is intended as a user/developer aid, and not intended to be used within a script) and any command line flags/switches that have been used to enable them in any popular versions of grep, then determine which switches each version of grep variation recognizes and/or allows without generating an error. Ideally I would prefer to identify a long and sh |
// Package main is a toy app demoing a defect in `staticcheck`s test for "S1021" | |
package main | |
import "fmt" | |
// Foo is a sample custom type | |
type Foo struct { | |
Value int | |
runabble func() | |
} |
#!/bin/bash | |
extractOsXUserHash() { | |
xmlOfUsertPlist="$( \ | |
plutil -convert xml1 - -o - \ | |
)" | |
if [ -z "$xmlOfUsertPlist" ] ; then \ | |
1>&2 echo "No input detected" | |
exit 127 | |
fi |
<?php | |
/** | |
* File to demonstrate isSubclassOf inconsistancy. | |
*/ | |
use Go\ParserReflection\ReflectionClass as ParsedReflectionClass; | |
use Go\ParserReflection\ReflectionEngine as ParsedReflectionEngine; | |
use Go\ParserReflection\Locator\CallableLocator as MockLocator; | |
use Go\ParserReflection\Locator\ComposerLocator as RealLocator; |
#!/opt/local/bin/python | |
from sympy import * | |
g, r, m, j = symbols('g r m j') | |
c, f, d, h = symbols('c f d h ') | |
# Eq((c+m)/j, g / d) | |
# Eq((c+m)/j, r / f) |
Facter.add(:overridable_fact_dest) do | |
setcode do | |
Facter.value(:overridable_fact_src) || 'default_value' | |
end | |
end |
<?php | |
namespace Acme\DemoBundle\Entity; | |
// use Doctrine\ORM\Mapping as ORM; | |
use Symfony\Component\Validator\Constraints as Assert; | |
/** | |
* FooTester | |
* |