Function insert_with_custom_fn

rust/tests/test_utils.rs:96–110

Insert data with custom key and value functions

(
    tree: &mut BPlusTreeMap<i32, String>,
    count: usize,
    key_fn: F,
    value_fn: G,
)

/// Insert data with custom key and value functions
pub fn insert_with_custom_fn<F, G>(
    tree: &mut BPlusTreeMap<i32, String>,
    count: usize,
    key_fn: F,
    value_fn: G,
) where
    F: Fn(usize) -> i32,
    G: Fn(usize) -> String,
{
    for i in 0..count {
        let key = key_fn(i);
        let value = value_fn(i);
        tree.insert(key, value);
    }
}

/// Insert sequential data start..end with string values
pub fn insert_range(tree: &mut BPlusTreeMap<i32, String>, start: usize, end: usize) {