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--- mozaic_tips_and_tricks [2021/03/15 19:04] – Fixed script code _ki
+++ mozaic_tips_and_tricks [2021/04/12 17:43] – [Remove or add an entry inside an array] _ki
@@ Line 18: / Line 18: @@
   * [[#Use a Knob to toggle 16 Pads View to HELP View]]
   * [[#Knob double-tap Support]]
+  * [[#Remove or add an entry inside an array]]
   * [[#Using Logic Operators in Expressions instead of IF cases]]
   * [[#Using Inc and Dec in Expressions]]
@@ Line 384: / Line 385: @@
+\\
+=====  Remove or add an entry inside an array =====
+<html><p align = "right"><small><i>From -ki</i></small></p></html>
+Instead of running through an array with a FOR loop to shift entries to either insert or remove an  intermedeate enry, it is way faster to use the CopyArray Mozaic function:
+<code> CopyArray source, dest, size</code>
 \\
+=== Remove an entry of an array (shift left) ===
+<code>
+@OnLoad
+  for i=0 to 6
+    a[i] = i
+  endfor
+  Log {Before },a[0],{ },a[1],{ },a[2],{ },a[3],{ },a[4],{ },a[5],{ },a[6]
+  // Remove entry a[2] by left shift of the following entries
+  CopyArray a[3], a[2], 6
+  Log {After  },a[0],{ },a[1],{ },a[2],{ },a[3],{ },a[4],{ },a[5],{ },a[6]
+@End
+</code>
+\\
+=== Insert an entry into array (shift right) ===
+Due to the inner working of CopyArray, the above trick doesn‘t work for right shifts - but one can use a temporary array to be more efficient than iterating over the array:
+<code>
+@OnLoad
+  for i=0 to 6
+    a[i] = i
+  endfor
+  Log {Before  },a[0],{ },a[1],{ },a[2],{ },a[3],{ },a[4],{ },a[5],{ },a[6]
+  // Insert a new a[2]
+  CopyArray a[2], _tmp, 6
+  CopyArray _tmp, a[3], 6
+  a[2] = 9
+  Log {After   },a[0],{ },a[1],{ },a[2],{ },a[3],{ },a[4],{ },a[5],{ },a[6]
+@End
+</code>
 =====  Using Logic Operators in Expressions instead of IF cases =====
 <html><p align = "right"><small><i>From -ki</i></small></p></html>