begriffs

rm -fr ~/.ghc
rm -fr ~/Library/Haskell/*/lib
rm -fr ~/Library/Haskell/bin/*
rm -fr ~/Library/Haskell/repo-cache
rm -fr ~/.cabal/packages

# Then in your project
# rm -fr .hsenv

ngn999

#include <sys/types.h>
#include <ifaddrs.h>
#include <netinet/in.h>
#include <arpa/inet.h>

bool getIP(string &ip)
{
    struct ifaddrs *ifa_buf = NULL;     /// /usr/include/ifaddrs.h
    struct ifaddrs *ifa_iter = NULL;
    void *tmp_addr_ptr = NULL;

ngn999

./configure --with-emacs=/Applications/Emacs.app/Contents/MacOS/Emacs  --with-lispdir=/Users/ngn999/.emacs.d/site-lisp/ --with-texmf-dir=/Users/ngn999/Library/texmf

ngn999

require 'formula'

class Maven <Formula
  url 'http://apache.dataguru.cn/maven/maven-2/2.2.1/binaries/apache-maven-2.2.1-bin.tar.gz'
  head 'http://www.apache.org/dist/maven/binaries/apache-maven-3.0-beta-2-bin.tar.gz'
  homepage 'http://maven.apache.org/'

  if ARGV.build_head?
    md5 'a40881f56a3087828545f30921ff393f'
  else

stuntgoat

(defun get-previous-indentation ()
  "Get the column of the previous indented line"
  (interactive)
  (save-excursion
    (progn
      (move-beginning-of-line nil)
	  (skip-chars-backward "\n \t")
      (back-to-indentation))
    (current-column)))

staltz

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

---

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

---

ngn999

在emacs里做url encoding. 最好你的环境是utf-8

(defun url-encode-ty ()
  (interactive)
  (let* ((origin-string (buffer-substring-no-properties (region-beginning) (region-end)))
         ;; (new-string (url-hexify-string origin-string))
         (new-string
 (with-temp-buffer

ngn999

#!/usr/bin/env perl

use strict;
use Text::vCard::Addressbook;
use XML::Simple qw(:strict);
use Data::Dumper;
my $address_book = new Text::vCard::Addressbook;

my $doc = XMLin('./contacts.xml', KeyAttr => { }, ForceArray => [ 'people', 'phone' ]);
foreach my $p (@{$doc->{people}}) {

jonathan-beebe

# Close Xcode & the iOS Simulator

# http://stackoverflow.com/a/30940055
# Remove any old runtimes from this directory.
cd /Library/Developer/CoreSimulator/Profiles/Runtimes
# e.g.
sudo rm -rf iOS\ 8.1.simruntime

# http://stackoverflow.com/a/11790983
# Remove the download receipts for simulators you don't need anymore.

evantoli

Configure Git to use a proxy

In Brief

You may need to configure a proxy server if you're having trouble cloning or fetching from a remote repository or getting an error like unable to access '...' Couldn't resolve host '...'.

Consider something like: