LowFile-scopeRuby Plug & play

Handle Time.parse and Date.parse errors

Parse dates/times in begin/rescue blocks and validate expected format/timezone.

Why this matters

User input and APIs often send malformed timestamps.

Side-by-side examples engineers can pattern-match during review.

Avoid

expires_at = Time.parse(params[:expires])

Prefer

expires_at = begin
  Time.iso8601(params[:expires])
rescue ArgumentError
  nil
end

Bad

Date.parse(s)

Good

Date.iso8601(s) rescue nil

From the same buckets as this rule.

Critical
Avoid equality operators in loop termination conditions
Check if loops use equality operators (== or !=) in termination conditions. These can lead to infinite loops if the condition is never met exactly. Instead, use relational operators like < or > for safer loop termination.
error-handlingreadability-refactor
Critical
Avoid Returning Null in Non-Async Task Methods
Returning null from a Task or Task<T> method causes a NullReferenceException if awaited. Use Task.CompletedTask or Task.FromResult<T>(null) instead.
error-handlingreadability-refactor+1
Critical
Avoid Using Boolean Expressions in `except` Statements
Detect `except` clauses that use `or` or `and` to catch multiple exceptions. This does not work as intended. Recommend using a tuple of exceptions instead.
error-handlingstack-python