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module builtin
pub fn (b byte) is_space() bool {
mut result := false
#result.val = /^\s*$/.test(String.fromCharCode(b))
return result
}
pub fn (c byte) is_letter() bool {
result := false
#result.val = (c.val >= `a`.charCodeAt() && c.val <= `z`.charCodeAt()) || (c.val >= `A`.charCodeAt() && c.val <= `Z`.charCodeAt())
return result
}
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