[#BloombergLP-bdlb-CharType]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlb.adoc[bdlb]::CharType
:relfileprefix: ../../
:mrdocs:

This `struct` provides a namespace for a suite of pure procedures operating on the fundamental type `char`.

== Synopsis

Declared in `<bdlb_chartype.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
struct CharType;
----

== Enums

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bdlb/CharType/_04enum.adoc[`Unnamed enum`] 
| Constants for this component.
| xref:BloombergLP/bdlb/CharType/Category.adoc[`Category`] 
| Set of character categories supported by this component.
|===


== Static Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bdlb/CharType/isAll.adoc[`isAll`] 
| Return whether `character` is in the `ALL` category.
| xref:BloombergLP/bdlb/CharType/isAlnum.adoc[`isAlnum`] 
| Return whether `character` is alphanumeric.
| xref:BloombergLP/bdlb/CharType/isAlpha.adoc[`isAlpha`] 
| Return whether `character` is alphabetic.
| xref:BloombergLP/bdlb/CharType/isAlund.adoc[`isAlund`] 
| Return whether `character` is alphabetic or underscore.
| xref:BloombergLP/bdlb/CharType/isAscii.adoc[`isAscii`] 
| Return whether `character` is a 7‐bit ASCII character.
| xref:BloombergLP/bdlb/CharType/isCategory.adoc[`isCategory`] 
| Return whether `character` belongs to `category`.
| xref:BloombergLP/bdlb/CharType/isCntrl.adoc[`isCntrl`] 
| Return whether `character` is a control character.
| xref:BloombergLP/bdlb/CharType/isDigit.adoc[`isDigit`] 
| Return whether `character` is a decimal digit.
| xref:BloombergLP/bdlb/CharType/isGraph.adoc[`isGraph`] 
| Return whether `character` is printable, excluding space.
| xref:BloombergLP/bdlb/CharType/isIdent.adoc[`isIdent`] 
| Return whether `character` is a C‐style identifier character.
| xref:BloombergLP/bdlb/CharType/isLower.adoc[`isLower`] 
| Return whether `character` is a lowercase letter.
| xref:BloombergLP/bdlb/CharType/isNone.adoc[`isNone`] 
| Return whether `character` is in the `NONE` category.
| xref:BloombergLP/bdlb/CharType/isOdigit.adoc[`isOdigit`] 
| Return whether `character` is an octal digit.
| xref:BloombergLP/bdlb/CharType/isPrint.adoc[`isPrint`] 
| Return whether `character` is printable, including space.
| xref:BloombergLP/bdlb/CharType/isPunct.adoc[`isPunct`] 
| Return whether `character` is punctuation.
| xref:BloombergLP/bdlb/CharType/isSpace.adoc[`isSpace`] 
| Return whether `character` is a whitespace character.
| xref:BloombergLP/bdlb/CharType/isUpper.adoc[`isUpper`] 
| Return whether `character` is an uppercase letter.
| xref:BloombergLP/bdlb/CharType/isXdigit.adoc[`isXdigit`] 
| Return whether `character` is a hexadecimal digit.
| xref:BloombergLP/bdlb/CharType/numAll.adoc[`numAll`] 
| Return the number of characters in the `ALL` category.
| xref:BloombergLP/bdlb/CharType/numAlnum.adoc[`numAlnum`] 
| Return the number of characters in the category `ALNUM` (i.e., `[0‐9A‐Za‐Z]`).
| xref:BloombergLP/bdlb/CharType/numAlpha.adoc[`numAlpha`] 
| Return the number of characters in the category `ALPHA` (i.e., `[A‐Za‐z]`).
| xref:BloombergLP/bdlb/CharType/numAlund.adoc[`numAlund`] 
| Return the number of characters in the category `ALUND` (i.e., `[ALPHA|]`).
| xref:BloombergLP/bdlb/CharType/numAscii.adoc[`numAscii`] 
| Return the number of characters in the category `ASCII` (i.e., `[0‐177]`).
| xref:BloombergLP/bdlb/CharType/numCategory.adoc[`numCategory`] 
| Return the number of characters in the specified `category`.
| xref:BloombergLP/bdlb/CharType/numCntrl.adoc[`numCntrl`] 
| Return the number of characters in the category `CNTRL` (i.e., `[1‐37]` and `177`).
| xref:BloombergLP/bdlb/CharType/numDigit.adoc[`numDigit`] 
| Return the number of characters in the category `DIGIT` (i.e., `[0‐9]`).
| xref:BloombergLP/bdlb/CharType/numGraph.adoc[`numGraph`] 
| Return the number of characters in the category `GRAPH` (i.e., any printable character except `SPACE`), and `false` otherwise.
| xref:BloombergLP/bdlb/CharType/numIdent.adoc[`numIdent`] 
| Return the number of characters in the category `IDENT` (i.e., `[ALNUM|]`).
| xref:BloombergLP/bdlb/CharType/numLower.adoc[`numLower`] 
| Return the number of characters in the category `LOWER` (i.e., `[a‐z]`).
| xref:BloombergLP/bdlb/CharType/numNone.adoc[`numNone`] 
| Return the number of characters in the NONE category.
| xref:BloombergLP/bdlb/CharType/numOdigit.adoc[`numOdigit`] 
| Return the number of characters in the category `ODIGIT` (i.e., `[0‐7]`).
| xref:BloombergLP/bdlb/CharType/numPrint.adoc[`numPrint`] 
| Return the number of characters in the category `PRINT` (i.e., any printable character including `SPACE`).
| xref:BloombergLP/bdlb/CharType/numPunct.adoc[`numPunct`] 
| Return the number of characters in the category `PUNCT` (i.e., any printable character other than `SPACE` or `ALNUM`).
| xref:BloombergLP/bdlb/CharType/numSpace.adoc[`numSpace`] 
| Return the number of characters in the category `SPACE` (i.e., `[space|tab|CR|NL|VT|FF]`).
| xref:BloombergLP/bdlb/CharType/numUpper.adoc[`numUpper`] 
| Return the number of characters in the category `UPPER` (i.e., `[A‐Z]`).
| xref:BloombergLP/bdlb/CharType/numXdigit.adoc[`numXdigit`] 
| Return the number of characters in the category `XDIGIT` (i.e., `[0‐9A‐Fa‐f]`).
| xref:BloombergLP/bdlb/CharType/stringAll.adoc[`stringAll`] 
| Return all `ALL` characters as a null‐terminated string.
| xref:BloombergLP/bdlb/CharType/stringAlnum.adoc[`stringAlnum`] 
| Return a null‐terminated string consisting of all characters in the category `ALNUM` (i.e., `[0‐9A‐Za‐Z]`), ordered by increasing character codes.
| xref:BloombergLP/bdlb/CharType/stringAlpha.adoc[`stringAlpha`] 
| Return a null‐terminated string consisting of all characters in the category `ALPHA` (i.e., `[A‐Za‐z]`), ordered by increasing character codes.
| xref:BloombergLP/bdlb/CharType/stringAlund.adoc[`stringAlund`] 
| Return a null‐terminated string consisting of all characters in the category `ALUND` (i.e., `[ALPHA|]`), ordered by increasing character codes.
| xref:BloombergLP/bdlb/CharType/stringAscii.adoc[`stringAscii`] 
| Return all `ASCII` characters as a null‐terminated string.
| xref:BloombergLP/bdlb/CharType/stringCategory.adoc[`stringCategory`] 
| Return all characters in `category` as a null‐terminated string.
| xref:BloombergLP/bdlb/CharType/stringCntrl.adoc[`stringCntrl`] 
| Return all `CNTRL` characters as a null‐terminated string.
| xref:BloombergLP/bdlb/CharType/stringDigit.adoc[`stringDigit`] 
| Return a null‐terminated string consisting of all characters in the category `DIGIT` (i.e., `[0‐9]`), ordered by increasing character codes.
| xref:BloombergLP/bdlb/CharType/stringGraph.adoc[`stringGraph`] 
| Return all `GRAPH` characters as a null‐terminated string.
| xref:BloombergLP/bdlb/CharType/stringIdent.adoc[`stringIdent`] 
| Return a null‐terminated string consisting of all characters in the category `IDENT` (i.e., `[ALNUM|]`), ordered by increasing character codes.
| xref:BloombergLP/bdlb/CharType/stringLower.adoc[`stringLower`] 
| Return a null‐terminated string consisting of all characters in the category `LOWER` (i.e., `[a‐z]`), ordered by increasing character codes.
| xref:BloombergLP/bdlb/CharType/stringNone.adoc[`stringNone`] 
| Return a null‐terminated string consisting of all characters in the category `NONE`. Note that this string is empty.
| xref:BloombergLP/bdlb/CharType/stringOdigit.adoc[`stringOdigit`] 
| Return a null‐terminated string consisting of all characters in the category `DIGIT` (i.e., `[0‐7]`), ordered by increasing character codes.
| xref:BloombergLP/bdlb/CharType/stringPrint.adoc[`stringPrint`] 
| Return all `PRINT` characters as a null‐terminated string.
| xref:BloombergLP/bdlb/CharType/stringPunct.adoc[`stringPunct`] 
| Return all `PUNCT` characters as a null‐terminated string.
| xref:BloombergLP/bdlb/CharType/stringSpace.adoc[`stringSpace`] 
| Return a null‐terminated string consisting of all characters in the category `SPACE` (i.e., `[space|tab|CR|NL|VT|FF]`), ordered by increasing character codes.
| xref:BloombergLP/bdlb/CharType/stringUpper.adoc[`stringUpper`] 
| Return a null‐terminated string consisting of all characters in the category `UPPER` (i.e., `[A‐Z]`), ordered by increasing character codes.
| xref:BloombergLP/bdlb/CharType/stringXdigit.adoc[`stringXdigit`] 
| Return a null‐terminated string consisting of all characters in the category `XDIGIT` (i.e., `[0‐9A‐Fa‐f]`), ordered by increasing character codes.
| xref:BloombergLP/bdlb/CharType/toAscii.adoc[`toAscii`] 
| Return the enumerator name for `category` as a C string.
| xref:BloombergLP/bdlb/CharType/toLower.adoc[`toLower`] 
| Return the lowercase equivalent of `input`.
| xref:BloombergLP/bdlb/CharType/toUpper.adoc[`toUpper`] 
| Return the uppercase equivalent of `input`.
|===



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