m (→‎top: template removal and cleanup)
(Automated edit: fixed 2 style guidelines)
Line 1: Line 1:
{{Block
+
{{block
 
|name = Join ()()
 
|name = Join ()()
 
|image = File:2.0 Join_()().png
 
|image = File:2.0 Join_()().png
Line 14: Line 14:
  
 
Some common uses for the Join ()() block:
 
Some common uses for the Join ()() block:
*Joining words and variables to create a sentence
+
* Joining words and variables to create a sentence
  
 
<scratchblocks>
 
<scratchblocks>
Line 22: Line 22:
 
</scratchblocks>
 
</scratchblocks>
  
*Place a [[variable]] in a message (e.g. "You completed '''2''' loops")
+
* Place a [[variable]] in a message (e.g. "You completed '''2''' loops")
  
 
<scratchblocks>say (join [The score is ] (join (score) [.]))</scratchblocks>
 
<scratchblocks>say (join [The score is ] (join (score) [.]))</scratchblocks>
  
*An easy method of negating a positive number
+
* An easy method of negating a positive number
  
 
<scratchblocks>set [variable v] to (join [-] (number))</scratchblocks>
 
<scratchblocks>set [variable v] to (join [-] (number))</scratchblocks>
  
{{Note|This does not work on numbers that are already negative.}}
+
{{note|This does not work on numbers that are already negative.}}
  
*Using hex inputs in pen colors
+
* Using hex inputs in pen colors
  
 
<scratchblocks>set pen color to (join [0x] (hex input))</scratchblocks>
 
<scratchblocks>set pen color to (join [0x] (hex input))</scratchblocks>
Line 38: Line 38:
 
===Offline decimal trick===
 
===Offline decimal trick===
 
In the [[Offline Editor]] (this does not work online!), numbers in variables and speech bubbles usually round to only one decimal place. In some [[project]]s, 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.
 
In the [[Offline Editor]] (this does not work online!), numbers in variables and speech bubbles usually round to only one decimal place. In some [[project]]s, 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.
*The original script:
+
* The original script:
  
 
<scratchblocks>
 
<scratchblocks>
Line 44: Line 44:
 
</scratchblocks>
 
</scratchblocks>
  
*Script with more decimals:
+
* Script with more decimals:
  
 
<scratchblocks>
 
<scratchblocks>
Line 50: Line 50:
 
</scratchblocks>
 
</scratchblocks>
  
*To set the number of decimal places, use a script like this:
+
* To set the number of decimal places, use a script like this:
  
 
<scratchblocks>
 
<scratchblocks>

Revision as of 18:08, 11 July 2018

Join ()()
2.0 Join ()().png
Category Operators
Type Reporter
Introduced in 1.4

The Join ()() block is an Operators block and a Reporter block. The block concatenates, or "links" the two values together and reports the result — for example, if "hello" and "world" were put in the block, it would report "helloworld". To report "hello world", use either "hello " and "world" or "hello" and " world", with a space.

Example Uses

If words, numbers, sentences—any two values—must be concatenated together, this block easily does the job.

Some common uses for the Join ()() block:

  • Joining words and variables to create a sentence
when flag clicked
ask [What's your name?] and wait
say (join (join (join (join [Hello ] (answer))[. My name is ]) (Person's name)) [.])
  • Place a variable in a message (e.g. "You completed 2 loops")
say (join [The score is ] (join (score) [.]))
  • An easy method of negating a positive number
set [variable v] to (join [-] (number))
Note Note: This does not work on numbers that are already negative.
  • Using hex inputs in pen colors
set pen color to (join [0x] (hex input))

Offline decimal trick

In the Offline Editor (this does not work online!), numbers in variables and speech bubbles usually round to only one decimal place. In some 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.

  • The original script:
set [number v] to ([sqrt v] of ((item (1 v) of [list v]) * (3)))
  • Script with more decimals:
set [number v] to (join([sqrt v] of ((item (1 v) of [list v]) * (3))) [])
  • To set the number of decimal places, use a script like this:
set [number v] to (join((round (([10^ v] of (decimal places)::operators) * ([sqrt v] of ((item (1 v) of [list v]) * (3))))) / ([10^ v] of (decimal places)::operators))[])

Workaround

Main article: List of Block Workarounds

This block can be replicated with the following code:

set [count v] to [0]
repeat (length of (insert1))
change [count v] by (1)
add (letter (count) of (instert1)) to [final v]
end
set [count v] to [0]
repeat (length of (insert2))
change [count v] by (1)
add (letter (count) of (insert2)) to [final v]
end
set [result v] to (final)

The variable "result" contains the result.

Cookies help us deliver our services. By using our services, you agree to our use of cookies.