String.RegionMatches Method
Definition
Important
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Overloads
| RegionMatches(Int32, String, Int32, Int32) |
Tests if two string regions are equal. |
| RegionMatches(Boolean, Int32, String, Int32, Int32) |
Tests if two string regions are equal. |
RegionMatches(Int32, String, Int32, Int32)
Tests if two string regions are equal.
[Android.Runtime.Register("regionMatches", "(ILjava/lang/String;II)Z", "")]
public bool RegionMatches (int toffset, string other, int ooffset, int len);[<Android.Runtime.Register("regionMatches", "(ILjava/lang/String;II)Z", "")>]
member this.RegionMatches : int * string * int * int -> boolParameters
- toffset
- Int32
the starting offset of the subregion in this string.
- other
- String
the string argument.
- ooffset
- Int32
the starting offset of the subregion in the string argument.
- len
- Int32
the number of characters to compare.
Returns
true if the specified subregion of this string
exactly matches the specified subregion of the string argument;
false otherwise.
- Attributes
Exceptions
if string is null.
Remarks
Tests if two string regions are equal.
A substring of this String object is compared to a substring of the argument other. The result is true if these substrings represent identical character sequences. The substring of this String object to be compared begins at index toffset and has length len. The substring of other to be compared begins at index ooffset and has length len. The result is false if and only if at least one of the following is true: <ul><li>toffset is negative. <li>ooffset is negative. <li>toffset+len is greater than the length of this String object. <li>ooffset+len is greater than the length of the other argument. <li>There is some nonnegative integer k less than len such that: this.charAt(toffset +k) != other.charAt(ooffset +k)</ul>
Note that this method does <em>not</em> take locale into account. The java.text.Collator class provides locale-sensitive comparison.
Java documentation for java.lang.String.regionMatches(int, java.lang.String, int, 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.
Applies to
RegionMatches(Boolean, Int32, String, Int32, Int32)
Tests if two string regions are equal.
[Android.Runtime.Register("regionMatches", "(ZILjava/lang/String;II)Z", "")]
public bool RegionMatches (bool ignoreCase, int toffset, string other, int ooffset, int len);[<Android.Runtime.Register("regionMatches", "(ZILjava/lang/String;II)Z", "")>]
member this.RegionMatches : bool * int * string * int * int -> boolParameters
- ignoreCase
- Boolean
if true, ignore case when comparing
characters.
- toffset
- Int32
the starting offset of the subregion in this string.
- other
- String
the string argument.
- ooffset
- Int32
the starting offset of the subregion in the string argument.
- len
- Int32
the number of characters to compare.
Returns
true if the specified subregion of this string
matches the specified subregion of the string argument;
false otherwise. Whether the matching is exact
or case insensitive depends on the ignoreCase
argument.
- Attributes
Exceptions
if string is null.
Remarks
Tests if two string regions are equal.
A substring of this String object is compared to a substring of the argument other. The result is true if these substrings represent character sequences that are the same, ignoring case if and only if ignoreCase is true. The substring of this String object to be compared begins at index toffset and has length len. The substring of other to be compared begins at index ooffset and has length len. The result is false if and only if at least one of the following is true: <ul><li>toffset is negative. <li>ooffset is negative. <li>toffset+len is greater than the length of this String object. <li>ooffset+len is greater than the length of the other argument. <li>ignoreCase is false and there is some nonnegative integer k less than len such that: <blockquote>
this.charAt(toffset+k) != other.charAt(ooffset+k)
</blockquote> <li>ignoreCase is true and there is some nonnegative integer k less than len such that: <blockquote>
Character.toLowerCase(Character.toUpperCase(this.charAt(toffset+k))) !=
Character.toLowerCase(Character.toUpperCase(other.charAt(ooffset+k)))
</blockquote> </ul>
Note that this method does <em>not</em> take locale into account, and will result in unsatisfactory results for certain locales when ignoreCase is true. The java.text.Collator class provides locale-sensitive comparison.
Java documentation for java.lang.String.regionMatches(boolean, int, java.lang.String, int, 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.