This article is now published on my website: Prefer Subshells for Context.
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function New-Symlink { | |
<# | |
.SYNOPSIS | |
Creates a symbolic link. | |
#> | |
param ( | |
[Parameter(Position=0, Mandatory=$true)] | |
[string] $Link, | |
[Parameter(Position=1, Mandatory=$true)] | |
[string] $Target |
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Latency Comparison Numbers (~2012) | |
---------------------------------- | |
L1 cache reference 0.5 ns | |
Branch mispredict 5 ns | |
L2 cache reference 7 ns 14x L1 cache | |
Mutex lock/unlock 25 ns | |
Main memory reference 100 ns 20x L2 cache, 200x L1 cache | |
Compress 1K bytes with Zippy 3,000 ns 3 us | |
Send 1K bytes over 1 Gbps network 10,000 ns 10 us | |
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD |
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# -*- coding: utf-8 -*- | |
from django import forms | |
from crispy_forms.helper import FormHelper | |
from crispy_forms.layout import Layout, Div, Submit, HTML, Button, Row, Field | |
from crispy_forms.bootstrap import AppendedText, PrependedText, FormActions | |
class MessageForm(forms.Form): | |
text_input = forms.CharField() |
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var page = new WebPage(), | |
address, output, size; | |
//capture and captureSelector functions adapted from CasperJS - https://github.com/n1k0/casperjs | |
capture = function(targetFile, clipRect) { | |
var previousClipRect; | |
var clipRect = {top: 0, left:0, width: 40, height: 40}; | |
if (clipRect) { | |
if (!isType(clipRect, "object")) { | |
throw new Error("clipRect must be an Object instance."); |
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#!/usr/bin/env python | |
""" | |
Recipe for creating and updating security groups programmatically. | |
""" | |
import collections | |
import boto |
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# Usage: show <local-port> <subdomain> | |
function show() { | |
DOMAIN=".tekacs.com" | |
REMOTE="$2$DOMAIN" | |
ssh -tR 1080:127.0.0.1:$1 vps "sudo ssh -Nl \$USER -L $REMOTE:80:127.0.0.1:1080 localhost" | |
} |
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