[vorticalbox]

Does anyone know why this doesn't work

PHP Code


<?php 
strat_map = {
  '1': lambda: print('One'),
  '2': lambda: print('Two')
  
}

strat_map['1']
strat_map['2'] 


but this does

PHP Code


<?php 
strat_map = {
  '1': lambda a: print('One'),
  '2': lambda a: print('Two')
  
}

strat_map['1']('')
strat_map['2']('') 


[7key]

This is the equivalent of what's happening in the first example, but replace foo with strat_map['1'] or strat_map['2'] in your case:

Code

def foo():
  print('One')

foo

See the problem here? foo, strat_map['1'], and strat_map['2'] all map to function names, but if you want to call them you'll need to use parentheses: foo(), strat_map['1'](), strat_map['2'](), even though they take no arguments.

Your second example does just that.

[vorticalbox]

This is the equivalent of what's happening in the first example, but replace foo with strat_map['1'] or strat_map['2'] in your case:

Code

def foo():
  print('One')

foo

See the problem here? foo, strat_map['1'], and strat_map['2'] all map to function names, but if you want to call them you'll need to use parentheses: foo(), strat_map['1'](), strat_map['2'](), even though they take no arguments.

Your second example does just that.

that makes sense thanks :)