name: duk_get_number_default

proto: |
  duk_double_t duk_get_number_default(duk_context *ctx, duk_idx_t idx, duk_double_t def_value);

stack: |
  [ ... val! ... ]

summary: |
  <p>Like <code><a href="#duk_get_number">duk_get_number()</a></code>
  but with an explicit default value, returned when the value is not a
  number or the index is invalid.</p>

example: |
  duk_double_t backoff_multiplier = duk_get_number_default(ctx, 2, 1.5);  /* default: 1.5 */

tags:
  - stack

seealso:
  - duk_get_number

introduced: 2.1.0