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19 lines
391 B
Markdown
19 lines
391 B
Markdown
# hashmap_keys
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Returns a list containing all keys in a [util/map/hashmap](https://openhome.cc/eGossip/OpenSCAD/lib3x-hashmap.html).
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**Since:** 3.0
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## Parameters
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- `map` : The map.
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## Examples
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use <util/map/hashmap.scad>
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use <util/map/hashmap_keys.scad>
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m = hashmap([["k1", 10], ["k2", 20], ["k3", 30]]);
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echo(hashmap_keys(m)); // a list contains "k1", "k2", "k3"
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