ios - Change collection view constraints programmatically -


i have create collection view in storyboard , add constraints. need change collection view constraint specific condition , want programmatically in class. have iboutlet collection view. parameter needs changed?

  1. add constraints in collection view
  2. select constraint want modify, hold control , drag class
  3. when want constraint changed, type nameofyourconstraint.constant = 100 // int

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