lzhoucs

PHP v7.0.12

• Download php-7.0.12-Win32-VC14-x64.zip
• Unzip to a path and add it to PATH env variable.
• Download and install Visual C++ Redistributable for Visual Studio 2015
• In command line, verify by entering php --version

lzhoucs

title file

lzhoucs

emacs

cursor-moving

C-f Move forward a character C-b Move backward a character

M-f Move forward a word M-b Move backward a word

C-n Move to next line C-p Move to previous line

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In the following example:

• i is defined; j is undefined but declared; k is undeclared thus causing error;
• indx is hoisted to the top of the function.

(function () {
  var i = 1;
  var j;
  console.log("i : " + i); // i : 1
  console.log("j : " + j); // j : undefined
 //console.log("k : " + k);// ReferenceError: k is not defined

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• drop the first bit

x >> 1;

• drop LSB (the least Significant bit)

x & (x - 1);

• extracts the lowest set bit of x (all other bits are cleared)

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• Access modifier

protected internal can block any third party code outside of the assembly from subclassing/overriding methods inside the assembly.

• equals

Object.ReferenceEquals() can check reference equality when hashcode()/equals() have been overriden to compare object equality between two objects. In java we can only check either object equality or reference equality, but not both.

• package/code organization

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Install

1. uncomment deb-src

sudo vi /etc/apt/sources.list

2. update

sudo apt-get update

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1. download latest source from https://sourceforge.net/projects/zsh/files/latest/download?source=files

2. extract

   tar -xf zsh-x.y.tar.gz
   

3. configure

./configure --prefix=/usr --bindir=/bin

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1. nvm & node

git clone https://github.com/creationix/nvm.git ~/.nvm && cd ~/.nvm && git checkout `git describe --abbrev=0 --tags`
nvm install v6  // assume this is done: source "$NVM_DIR/nvm.sh" 

2. rvm & ruby

gpg2 --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3

lzhoucs

#!/bin/bash

echo "removing evaluation key"
rm ~/.IntelliJIdea15/config/eval/idea15.evaluation.key
# for mac go to: /Users/username/Library/Preferences/IntelliJIdea2016.3/eval/idea163.evaluation.key

echo "resetting evalsprt in options.xml"
sed -i '/evlsprt/d' ~/.IntelliJIdea15/config/options/options.xml
# for mac go to: /Users/lzhoucs/Library/Preferences/IntelliJIdea2016.3/options/options.xml