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Add simple home page.

Neil Fraser
2014-10-14 17:56:33 -07:00
parent daa3c930fa
commit dc28a85e67
8 changed files with 16 additions and 16 deletions
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Colour.md

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# Introduction
Blockly users can choose, create, and blend colours. Colours are primarily used in [the turtle graphics application](https://blockly-demo.appspot.com/static/apps/turtle/index.html) but are also available in [the coding application](https://blockly-demo.appspot.com/static/apps/code/index.html). Note that we use the British spelling of "colour".
# Blocks

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Home.md

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Welcome to the blockly wiki!
# Blockly Block Wiki
Blockly has a large number of blocks. They are divided into the following categories:
* [Logic](Logic) (including [If/Else](IfElse))
* [Loops](Loops)
* Math
* [Text](Text)
* [Lists](Lists)
* [Colour](Colour)
* [Variables](Variables)
* Functions
A Blockly application will choose which (if any) of these default blocks are present.
Additionally, most applications will also create their own custom blocks.

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IfElse.md

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# Introduction
Conditional statements are central to computer programming. They make it possible to express statements like:
* If there is a path to the left, turn left.
* If score = 100, print "Well done!".

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Lists.md

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# Introduction
As in everyday speech, a Blockly list is an ordered collection of items, such as a "to do" list or a shopping list. Items in a list may be of any type, and the same value may appear more than once in a list.
# List Creation

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Logic.md

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# Introduction
[Boolean algebra](https://en.wikipedia.org/wiki/Boolean_algebra) is a mathematical system that has two values:
* **true**
* **false**
Boolean values (also called _conditions_) are used in these control block, which contain examples::
Boolean values (also called _conditions_) are used in these control block, which contain examples:
* [conditional blocks](IfElse)
* [repeat blocks](Loops#repeat)

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Loops.md

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# Introduction and Terminology
The **Control** category holds blocks that control whether other blocks placed in their **body** are run. (For example, in the below "repeat" block, the body contains the "print" block and its input.) There are two types of control blocks: [IfElse](IfElse) (described on their own page) and these, which control how many times the body is run and, in some cases, the value of a variable used within the body. These structures are called **loops** since the body is repeated (possibly) multiple times, reminiscent of a rope containing loops. Each pass through the loop is called an **iteration**. (How about our using the term "pass"?) For more information, see https://en.wikipedia.org/wiki/Control_flow#Loops.
# Blocks for Loop Creation

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Text.md

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# Introduction
Examples of pieces of text are:
* "thing #1"
* "March 12, 2010"

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Variables.md

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# Introduction
We use the term _variable_ the same as it is used in mathematics and in other programming languages: a named value that can be changed (varies). Variables can be created in several different ways.
* Every [count with](Loops#count_with) and [for each](Loops#for_each) block uses a variable and defines its values. These values can only be used within the block. A traditional computer science term for these are [loop variables](https://en.wikipedia.org/wiki/Loop_variable).
* User-defined functions (also known as "procedures") can define inputs, which creates variables that can be used only within the function. These are traditionally called "[parameters](https://en.wikipedia.org/wiki/Parameter)" or "arguments".