Character.IsLetter Method
Definition
Important
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Overloads
| IsLetter(Char) |
Determines if the specified character is a letter. |
| IsLetter(Int32) |
Determines if the specified character (Unicode code point) is a letter. |
IsLetter(Char)
Determines if the specified character is a letter.
[Android.Runtime.Register("isLetter", "(C)Z", "")]
public static bool IsLetter (char ch);[<Android.Runtime.Register("isLetter", "(C)Z", "")>]
static member IsLetter : char -> boolParameters
- ch
- Char
the character to be tested.
Returns
true if the character is a letter;
false otherwise.
- Attributes
Remarks
Determines if the specified character is a letter.
A character is considered to be a letter if its general category type, provided by Character.getType(ch), is any of the following: <ul> <li> UPPERCASE_LETTER<li> LOWERCASE_LETTER<li> TITLECASE_LETTER<li> MODIFIER_LETTER<li> OTHER_LETTER</ul>
Not all letters have case. Many characters are letters but are neither uppercase nor lowercase nor titlecase.
<b>Note:</b> This method cannot handle supplementary characters. To support all Unicode characters, including supplementary characters, use the #isLetter(int) method.
Java documentation for java.lang.Character.isLetter(char).
Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.
Applies to
IsLetter(Int32)
Determines if the specified character (Unicode code point) is a letter.
[Android.Runtime.Register("isLetter", "(I)Z", "")]
public static bool IsLetter (int codePoint);[<Android.Runtime.Register("isLetter", "(I)Z", "")>]
static member IsLetter : int -> boolParameters
- codePoint
- Int32
the character (Unicode code point) to be tested.
Returns
true if the character is a letter;
false otherwise.
- Attributes
Remarks
Determines if the specified character (Unicode code point) is a letter.
A character is considered to be a letter if its general category type, provided by Character#getType(int) getType(codePoint), is any of the following: <ul> <li> UPPERCASE_LETTER<li> LOWERCASE_LETTER<li> TITLECASE_LETTER<li> MODIFIER_LETTER<li> OTHER_LETTER</ul>
Not all letters have case. Many characters are letters but are neither uppercase nor lowercase nor titlecase.
Added in 1.5.
Java documentation for java.lang.Character.isLetter(int).
Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.