The valid?/2 function evaluates whether a given string matches a specified regular expression.

Parameters

• data - The string to be checked against the regular expression.
• format - The regular expression pattern to be used for matching.

Returns

A boolean value:

• true if the string matches the regex.
• false if the string does not match the regex.

Examples

iex> Dsv.Format.valid?("string to match", ~r/.* .* .*/)
:true

iex> Dsv.Format.valid?("stringtomatch", ~r/.* .* .*/)
:false

The validate/2 function evaluates whether a given string matches a specified regular expression.

Parameters

• data - The string to be checked against the regular expression.
• format - The regular expression pattern to be used for matching.

Returns

• :ok if the string matches the regex.
• {:error, message} if the string does not match the regex.

Examples

iex> Dsv.Format.validate("string to match", ~r/.* .* .*/)
:ok

iex> Dsv.Format.validate("stringtomatch", ~r/.* .* .*/)
{:error, "Value stringtomatch does not match pattern .* .* .*"}

The validate/2 function evaluates whether a given string matches a specified regular expression.

Parameters

• data - The string to be checked against the regular expression.
• format - The regular expression pattern to be used for matching.
• message - An custom error message to be returned in case of failure.

Returns

• :ok if the string matches the regex.
• {:error, message} if the string does not match the regex.

Examples

iex> Dsv.Format.validate("string to match", ~r/.* .* .*/, "This is wrong.")
:ok

iex> Dsv.Format.validate("stringtomatch", ~r/.* .* .*/, "This is wrong.")
{:error, "This is wrong."}

iex> Dsv.Format.validate("stringtomatch", ~r/.* .* .*/, message: "This is wrong.")
{:error, "This is wrong."}