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From PascalSchumacher <...@git.apache.org>
Subject [GitHub] commons-lang pull request #223: [LANG-1304] StringUtils method to check for ...
Date Mon, 01 May 2017 09:19:55 GMT
Github user PascalSchumacher commented on a diff in the pull request:

    https://github.com/apache/commons-lang/pull/223#discussion_r114111595
  
    --- Diff: src/main/java/org/apache/commons/lang3/StringUtils.java ---
    @@ -7193,6 +7193,45 @@ public static boolean isAllUpperCase(final CharSequence cs) {
             return true;
         }
     
    +    /**
    +     * <p>Checks if the CharSequence contains mixed casing of both uppercase and
lowercase characters.</p>
    +     *
    +     * <p>{@code null} will return {@code false}.
    +     * An empty String (length()=0) will return {@code false}.</p>
    +     *
    +     * <pre>
    +     * StringUtils.isMixedCase(null)    = false
    +     * StringUtils.isMixedCase("")      = false
    +     * StringUtils.isMixedCase("aBc")   = true
    +     * StringUtils.isMixedCase("ABC")   = false
    +     * StringUtils.isMixedCase("abc")   = false
    +     * StringUtils.isMixedCase("A c")   = false
    +     * StringUtils.isMixedCase("A1c")   = false
    +     * StringUtils.isMixedCase("a/C")   = false
    +     * </pre>
    +     *
    +     * @param cs the CharSequence to check, may be null
    +     * @return {@code true} if contains both uppercase and lowercase characters, and
is non-null
    +     */
    +    public static boolean isMixedCase(final CharSequence cs) {
    +        if (cs == null || isEmpty(cs)) {
    +            return false;
    +        }
    +        boolean containsUppercase = false;
    +        boolean containsLowercase = false;
    +        final int sz = cs.length();
    +        for (int i = 0; i < sz; i++) {
    --- End diff --
    
    @arbasha I believe you requested this feature, what is your opinion on this?


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