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Added ability to return default value from struct_val() if keyword is not present

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Marcin Jaworski 2020-11-13 17:10:04 +01:00
parent 22836c999c
commit 4cda1bf488
1 changed files with 5 additions and 4 deletions
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9
structs.scad
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@ -64,16 +64,17 @@ function struct_remove(struct, keyword) =
// Function: struct_val() // Function: struct_val()
// Usage: // Usage:
// struct_val(struct,keyword) // struct_val(struct, keyword, default)
// Description: // Description:
// Returns the value for the specified keyword in the structure, or undef if the keyword is not present // Returns the value for the specified keyword in the structure, or default value if the keyword is not present
// Arguments: // Arguments:
// struct = input structure // struct = input structure
// keyword = keyword whose value to return // keyword = keyword whose value to return
function struct_val(struct,keyword) = // default = default value to return if keyword is not present, defaults to undef
function struct_val(struct, keyword, default=undef) =
assert(is_def(keyword),"keyword is missing") assert(is_def(keyword),"keyword is missing")
let(ind = search([keyword],struct)[0]) let(ind = search([keyword],struct)[0])
ind == [] ? undef : struct[ind][1]; ind == [] ? default : struct[ind][1];
// Function: struct_keys() // Function: struct_keys()