Logo

Programming-Idioms

History of Idiom 69 > diff from v13 to v14

Edit summary for version 14 by :
↷

Version 13

2015-08-21, 23:35:13

Version 14

2015-08-22, 21:49:34

Idiom #69 Seed random generator

Use seed s to initialize a random generator.

If s is constant, the generator output will be the same each time the program runs. If s is based on the current value of the system clock, the generator output will be different each time.

Idiom #69 Seed random generator

Use seed s to initialize a random generator.

If s is constant, the generator output will be the same each time the program runs. If s is based on the current value of the system clock, the generator output will be different each time.

Code 
var
  SomeInteger: Integer;
  Value: double;
...
  Randomize;  //initializes the PRNG's seed with a value depensing on system time
  Value := random;
...
  RandSeed := SomeInteger;  //I Output will be the same eacht time the program runs
  Value := random;
...