m (Reverted edits by Jonathanpb (Talk) to last revision by Chrischb)
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{{Block
 
{{Block
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|name = Join ()()
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|name = Join () ()
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|image = File:Join_()().png
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|image = File:Join () ().gif
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|imagewidth = 57px
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|imagewidth = 105px
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|category = [[Operators Blocks|Operators]]
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|category = [[Operators Blocks|Operators Block]]
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|type = [[Reporter Block|Reporter]]
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|type = [[Reporter Block]]
 
}}
 
}}
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The '''Join ()()''' [[Blocks|block]] is an [[Operators Blocks|Operators block]] and a [[Reporter Block|Reporter block]]. The block 'sticks' the two values together and reports the result - for example, if "hello" and "world" were put in the block, it would report "helloworld".
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The '''Join ()()''' block puts two strings together, but doesn't necessarily combine them to make a new value. It is a [[Reporter Block|reporter block]] that can have other [[Reporter Block|reporter]]/[[Boolean Block|boolean]] blocks inside it.  
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==Common uses==
 
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If words, numbers, sentences - any two values - must be stuck together, this block easily does the job.
 
  
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Some common uses for the '''Join ()()''' block:
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==Common Uses==
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*Sticking together words and variables to create a sentence
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[[File:Hello (answer).gif|thumb|432px|An example script using the Join ()() Block]]
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This [[Block|block]] is commonly used to:
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*Use the value of a [[variable]] in a block of text
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*Use the value of the [[Answer (block)|answer block]] in a block of text
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*Joining any two values together in a [[list]] or block of text
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[[Category:Operators Blocks]]
  
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[[File:Hello (answer).gif]]
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==Offline Decimal Trick==
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Offline, numbers in variables and speech bubbles usually round to only two decimal places. In some projects, it is necessary to have more. Using the '''join ()()''' block is one way to get many more decimal places. Simply join the operations used to get the number to nothing. Example:
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The original script:
  
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*Place a [[variable]] in a message (eg. "You completed '''2''' loops")
 
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*An easy method of making a positive number turn negative (placing "-" in the first input and the positive number in the second)
 
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==Offline decimal trick==
 
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Offline, numbers in variables and speech bubbles usually round to only two decimal places. In some [[Project|projects]], it is necessary to have more. Placing the calculation in one input of the '''Join ()()''' block and leaving the other input empty 'magically' reports the number with more decimal places.
 
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*The original script:
 
 
[[File:No join.gif]]
 
[[File:No join.gif]]
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*Script with more decimals:
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Script with more decimals:
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[[File:Join Trick.gif]]
 
[[File:Join Trick.gif]]
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*To set the number of decimal places, use a script like this:
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To set the number of decimal places, use a script like this:
 
[[File: Set Decimal places.gif|550px]]
 
[[File: Set Decimal places.gif|550px]]
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{{Operators Blocks}}
 
{{Operators Blocks}}
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{{Scratch Blocks}}
 
[[Category:Operators Blocks]]
 
[[Category:Operators Blocks]]

Revision as of 05:39, 2 September 2010

Join () ()
File:Join () ().gif
Category Operators Block
Type Reporter Block

The Join ()() block puts two strings together, but doesn't necessarily combine them to make a new value. It is a reporter block that can have other reporter/boolean blocks inside it.

Common Uses

File:Hello (answer).gif
An example script using the Join ()() Block

This block is commonly used to:

  • Use the value of a variable in a block of text
  • Use the value of the answer block in a block of text
  • Joining any two values together in a list or block of text

Offline Decimal Trick

Offline, numbers in variables and speech bubbles usually round to only two decimal places. In some projects, it is necessary to have more. Using the join ()() block is one way to get many more decimal places. Simply join the operations used to get the number to nothing. Example:

The original script:

File:No join.gif

Script with more decimals:

File:Join Trick.gif

To set the number of decimal places, use a script like this: 550px

v • d • e
Operators Blocks
v • d • e
Blocks
Motion

Move () Steps • Turn () Degrees• Go to () • Go to X: () Y: () • Glide () Secs to () • Glide () Secs to X: () Y: () • Point in Direction () • Point Towards () • Change X by () • Set X to () • Change Y by () • Set Y to () • If on Edge, Bounce • Set Rotation Style () • X Position • Y Position • Direction

Looks
For a Sprite

Say () for () Seconds • Say () • Think () for () Seconds • Think () • Switch Costume to () • Next Costume • Switch Backdrop to () • Next Backdrop • Change Size by () • Set Size to ()% • Change () Effect by () • Set () Effect to () • Clear Graphic Effects • Show • Hide • Go to () Layer • Go () () Layers • Costume () • Backdrop () • Size

For the Stage

Switch Backdrop to () • Switch Backdrop to () and Wait • Next Backdrop • Change () Effect by () • Set () Effect to () • Clear Graphic Effects • Backdrop ()

Sound

Play Sound () Until Done • Start Sound () • Stop All Sounds • Change () Effect by () • Set () Effect to () • Clear Sound Effects • Change Volume by () • Set Volume to () % • Volume

Events

When Green Flag Clicked • When () Key Pressed • When This Sprite Clicked • When Backdrop Switches to () • When () > () • When I Receive () • Broadcast () • Broadcast () and Wait

Control

Wait () Seconds • Repeat () • Forever • If () Then • If () Then, Else • Wait Until () • Repeat Until () • Stop () • When I Start as a Clone • Create Clone of () • Delete This Clone

Sensing

Touching ()? • Touching Color ()? • Color () is Touching ()? • Distance to () • Ask () and Wait • Answer • Key () Pressed? • Mouse Down? • Mouse X • Mouse Y • Set Drag Mode () • Loudness • Timer • Reset Timer • () of () • Current () • Days Since 2000 • Username

Operators

() + () • () - () • () * () • () / () • Pick Random () to () • () > () • () < () • () = () • () and () • () or () • Not () • Join ()() • Letter () of () • Length of () • () Contains ()? • () Mod () • Round () • () of ()

Variables
Variables

() • Set () To () • Change () by () • Show Variable () • Hide Variable ()

Lists

() • Add () to () • Delete () of () • Delete All of () • Insert () at () of () • Replace Item () of () with () • Item () of () • Item # of () in () • Length of () • () Contains () • Show List () • Hide List ()

My Blocks

Define () • () (Custom block)

Scratch Extensions
Music

Play Drum () for () Beats • Rest for () Beats • Play Note () for () Beats • Set Instrument to () • Set Tempo to () bpm • Change Tempo by () • Tempo

Pen

Erase All • Stamp • Pen Down • Pen Up • Set Pen Color to () • Change Pen () by () • Set Pen () to () • Change Pen Size by () • Set Pen Size to ()

Video Sensing

When Video Motion > () • Video () on () • Turn Video () • Set Video Transparency to ()

Text to Speech

Speak () • Set Voice to () • Set Language to ()

Translate

Translate () to () • Language

Makey Makey

When () Key Pressed (Makey Makey block) • When () Pressed in Order (block)

micro:bit

When () Button Pressed • () Button Pressed? • When () • Display () • Display Text () • Clear Display • When Tilted () • Tilted ()? • Tilt Angle () • When Pin () Connected

LEGO MINDSTORMS EV3

<Motor () Turn This Way for () Seconds • Motor () Turn That Way for () Seconds • Motor () Set Power ()% • Motor () Position • When Button () Pressed • When Distance < () • When Brightness < () • Button () Pressed • Distance • Brightness • Beep Note () For () Secs

LEGO BOOST

Turn Motor () for () Seconds • Turn Motor () for () Rotations • Turn Motor () On • Turn Motor () Off • Set Motor () Speed to ()% • Set Motor () Direction () • Motor () Position • When () Brick Seen • Seeing () Brick? • When Tilted () • Tilt Angle () • Set Light Color to ()

LEGO Education WeDo 2.0

Turn () On for () Seconds • Turn () On • Turn () Off • Set () Power to () • Set () Direction to () • Set Light Color to () • When Distance () () • When Tilted () • Distance • Tilted ()? • Tilt Angle ()

Go Direct Force & Acceleration

When () • When Force Sensor () • Force • When Tilted () • Tilted ()? • Tilt Angle () • Falling? • Spin Speed () • Acceleration ()

Raspberry Pi GPIO

When GPIO () is () • GPIO () is ()? • Set GPIO () to Output () • Set GPIO () to Input ()

Raspberry Pi Sense HAT

Display Text () • Display Character () • Display () • Display Sprite • Display Stage • Clear Display • Set Colour to () • Set Background to () • Set Pixel X () Y () to () • Set Rotation to () Degrees • When Joystick Pushed () • When Shaken • When Tilted () • Temperature • Pressure • Humidity • Roll • Pitch • Yaw

Raspberry Pi Simple Electronics

When Button () is () • Button () is ()? • Turn LED () () • Toggle LED ()

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