The Joel Test

  1. Do you use source control?
  2. Can you make a build in one step?
  3. Do you make daily builds?
  4. Do you have a bug database?
  5. Do you fix bugs before writing new code?
  6. Do you have an up-to-date schedule?
  7. Do you have a spec?
  8. Do programmers have quiet working conditions?
  9. Do you use the best tools money can buy?
  10. Do you have testers?
  11. Do new candidates write code during their interview?
  12. Do you do hallway usability testing?

Who is CodeIgniter For?

CodeIgniter is an Application Development Framework – a toolkit – for people who build web sites using PHP. Its goal is to enable you to develop projects much faster than you could if you were writing code from scratch, by providing a rich set of libraries for commonly needed tasks, as well as a simple interface and logical structure to access these libraries. CodeIgniter lets you creatively focus on your project by minimizing the amount of code needed for a given task.

CodeIgniter is right for you if:

  • You want a framework with a small footprint.
  • You need exceptional performance.
  • You need broad compatibility with standard hosting accounts that run a variety of PHP versions and configurations.
  • You want a framework that requires nearly zero configuration.
  • You want a framework that does not require you to use the command line.
  • You want a framework that does not require you to adhere to restrictive coding rules.
  • You are not interested in large-scale monolithic libraries like PEAR.
  • You do not want to be forced to learn a templating language (although a template parser is optionally available if you desire one).
  • You eschew complexity, favoring simple solutions.
  • You need clear, thorough documentation.

Git Commands

These are common Git commands used in various situations:

start a working area (see also: git help tutorial)

clone Clone a repository into a new directory

init Create an empty Git repository or reinitialize an existing one

work on the current change (see also: git help everyday)

add Add file contents to the index

mv Move or rename a file, a directory, or a symlink

reset Reset current HEAD to the specified state

rm Remove files from the working tree and from the index

examine the history and state (see also: git help revisions)

bisect Use binary search to find the commit that introduced a bug

grep Print lines matching a pattern

log Show commit logs

show Show various types of objects

status Show the working tree status

grow, mark and tweak your common history

branch List, create, or delete branches

checkout Switch branches or restore working tree files

commit Record changes to the repository

diff Show changes between commits, commit and working tree, etc

merge Join two or more development histories together

rebase Reapply commits on top of another base tip

tag Create, list, delete or verify a tag object signed with GPG

collaborate (see also: git help workflows)

fetch Download objects and refs from another repository

pull Fetch from and integrate with another repository or a local branch

push Update remote refs along with associated objects

‘git help -a’ and ‘git help -g’ list available subcommands and some concept guides.

See ‘git help <command>’ or ‘git help <concept>’ to read about a specific subcommand or concept.

Why did Google choose Java for Android

  • Java is a known language, developers know it and don’t have to learn it. Java has yet again emerged as the world’s most popular programming language. Also there are lots of engineers who specialise in Java making it easier for them to compile Apps and Games.
  • It’s harder to shoot yourself with Java than with C/C++ code since it has no pointer arithmetic.
  • It runs in a VM, so no need to recompile it for every phone out there and Java is easy to secure. This is Java’s very important feature. Running on a VM (thus no recompiling) is a huge plus. Also, it easily separates processes from each other, preventing a rogue application from destroying your phone or interfering with other applications. Every App has assigned its own address. All addresses are translated by MMU. This provides base level security to the App and the Android ecosystem by preventing leakages.
  • As said in point number 1 above, since Java is the most popular programming language, a large number of development tools are available for developers. Java has huge open source support, with many libraries and tools are available to make developers life easier.
  • Several mobile phones already used Java ME, so Java was known in the mobile industry and the engineers.
  • The speed difference is not an issue for most applications; if it was you should code in low-level language
  • Also Android as a operating system runs on many different hardware platforms including smart TVs, Android wear etc. Given that almost all VMs JIT compile down to native code, raw code speed is often comparable with native speed. A lot of delays attributed to higher-level languages are less to do with the VM overhead than other factors (a complex object runtime, ‘safety’ checking memory access by doing bounds checking, etc).
  • Java allows developers to create sandbox applications, and create a better security model so that one bad App can’t take down your entire OS.

#DidYouKnow 7 Facts about Linux

  • Linux is the operating system for over 95% of the top one million domains
  • More than 80% of new smartphones sold run Android, which is based on the Linux kernel
  • Of the top 500 top supercomputers in the world, 99% run on Linux
  • Most of the global markets run on Linux, including the New York Stock Exchange, NASDAQ, the London Exchange, and the Tokyo Stock Exchange
  • The majority of consumer electronics devices use Linux for its small footprint
  • More than 75% of cloud-enabled enterprises report using Linux as their primary cloud platform
  • Linux is the go-to infrastructure supporting the world’s ecommerce leaders, including Amazon, eBay, PayPal, Walmart, and others

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