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20 lines
628 B
Markdown
20 lines
628 B
Markdown
# hashmap_get
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This function gets the value of the specified key from a [util/map/hashmap](https://openhome.cc/eGossip/OpenSCAD/lib3x-hashmap.html). If the key doesn't exist, return `undef`.
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**Since:** 3.0
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## Parameters
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- `map` : The original map.
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- `key` : The specified key.
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- `eq` : A equality function. If it's ignored, use `==` to compare elements.
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- `hash` : A hash function. If it's ignored, convert each element to a string and hash it.
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## Examples
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use <util/map/hashmap.scad>;
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use <util/map/hashmap_get.scad>;
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m = hashmap([["k1", 10], ["k2", 20], ["k3", 30]]);
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assert(hashmap_get(m, "k2") == 20); |