Crate helpers4 

General-purpose helpers, one module per category.

Module and function names may overlap across modules (array::compact and object::compact are different functions); import through the module path, e.g. helpers4::string::capitalize.

Modules

array

Helpers for slices and Vecs that the standard library does not provide.

cache

Caches and stores whose entries expire. The clock is always passed in, never read.

duration

Parsing and formatting of durations as short human-readable strings (1h30m).

env

Dotenv (.env) helpers working on plain text: no file or process-environment access, so they are deterministic and easy to test. Read the file yourself, edit the content here, and write it back.

hex

Hexadecimal encoding and decoding with typed errors.

http

HTTP header value helpers on plain text: no dependency on an HTTP crate.

iter

Helpers for any Iterator, not only slices: work on a lazy, single-use or unbounded source.

map

Helpers for HashMap that the standard library does not provide.

net

Network helpers on std::net and plain text: no I/O, no resolution.

number

Numeric helpers that the standard library does not provide.

string

String manipulation and formatting helpers.

time

Time helpers. Reading the clock is explicit and fallible: a clock set before 1970 is an error, not 0.

validate

Shape checks for common user-facing formats: pragmatic subsets that catch real mistakes, not full grammars. None of them normalizes or parses the value, only checks it.