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Posted to dev@commons.apache.org by "Ash .." <eq...@hotmail.com> on 2003/11/23 21:55:09 UTC
Re: [lang] new functionality in StringUtils and ArrayUtils - proposal 01 - error
In my previous email,
/**
* <pre>
* StringUtils.lead("abc", '.', 3) = "abc..."
*/
This should be:
/**
* <pre>
* StringUtils.trail("abc", '.', 3) = "abc..."
*/
>From: "Ash .." <eq...@hotmail.com>
>To: commons-dev@jakarta.apache.org
>Hi,
>
>I would like to propose the following methods to the StringUtils and
>ArrayUtils classes.
>They are just minor additions to the existing functionality, but I thought
>would be interesting,
>hopefully quite useful too.
>
>
>Waiting for feedback and looking forward to some development in this
>regard.
>I would be glad to submit an implementation to the concerned people, if you
>feel this functionality
>is include-worthy.
>
>Thanks,
>Ash
>
>
>
>
>
>
> /**
> * Flanks the given string with the flank String or char.
> * <pre>
> * StringUtils.flank(null, *) = null
> * StringUtils.flank("", *) = *
> * StringUtils.flank("abc", null) = abc
> * StringUtils.flank("abc", "x") = xabcx
> * StringUtils.flank("abc", "xy") = xyabcxy // xy...xy
> * </pre>
> */
> StringUtils.flank(String flankee, String flank)
> StringUtils.flank(String flankee, char flank)
>
>
>Some special cases of flanking are quotes.
>
> /**
> * <pre>
> * StringUtils.singleQuote("Now is the time...") = 'Now is the time...'
> * </pre>
> */
> StringUtils.singleQuote(String quotee)
>
> /**
> * <pre>
> * StringUtils.doubleQuote("Now is the time...") = "Now is the time..."
> * </pre>
> */
> StringUtils.doubleQuote(String quotee)
>
>
>
> /**
> * Enclose the string with a pair of symmetrical characters
> * given one of the pair. Such pairs are
> *
> * <tt>
> * (), {}, [], <>,
> * </tt>
> *
> * When the encloser is not from a recognized pair,
> * the method resorts to flank-like appending, with the order
> * for the afterpart reversed.
> *
> * <pre>
> * StringUtils.enclose("abc", "[") = "[abc]"
> * StringUtils.enclose("abc", "[[") = "[[abc]]"
> * StringUtils.enclose("abc", "x") = xabcx
> * StringUtils.enclose("abc", "xy") = xyabcyx // xy..yx
> * </pre>
> *
> * @param enclosee the String to be enclosed
> * @param either of such pairs of strings as given above
> */
> StringUtils.enclose(String enclosee, String encloser)
>
>
>
> /**
> * <pre>
> * StringUtils.lead("abc", "zz") = "zzabc"
> * </pre>
> */
> StringUtils.lead(String leadee, String leadStr)
> StringUtils.lead(String leadee, String leadChar)
>
> /**
> * <pre>
> * StringUtils.lead("abc", '.', 3) = "abc..."
> */
> StringUtils.lead(String leadee, char leadStr, int repeatCount)
> StringUtils.lead(String leadee, String leadStr, int repeatCount)
>
> /**
> * <pre>
> * StringUtils.trail("abc", "zz") = "abczz"
> * </pre>
> */
> StringUtils.trail(String trailee, String trailStr)
> StringUtils.trail(String trailee, char trailChar)
> StringUtils.trail(String trailee, String trailStr, int repeatCount)
> StringUtils.trail(String trailee, char trailChar, int repeatCount)
>
>
>
> /**
> * The concept of naught.
> * True if the String is null or "null".
> * <pre>
> * StringUtils.isNaught("abc") = false
> * StringUtils.isNaught(null) = true
> * StringUtils.isNaught("null") = true
> * </pre>
> */
> StringUtils.isNaught(String str)
>
>
>
> // ArrayUtils methods
>
> /**
> * Similar to the existing <code>toString</code> but
> * using delimiter given.
> */
> ArrayUtils.toString(Object array, String delimiter)
> ArrayUtils.toString(Object array, char delimiter)
>
> /**
> * A <code>toString</code> that emits only a given part
> * of the array.
> */
> ArrayUtils.toString(Object arr, int startIndex, int endIndex)
>
>
>
> /**
> * Obtain a new array of the given size, with the elements
> * present between startIndex (inclusive) and endIndex (exclusive).
> */
> ArrayUtils.subarray(arr, startIndex, endIndex)
>
>
>
>
>---------------
>
>
>
>
>>The concept of a "naught" String.
>>
>>A String is naught if it is either 'null' or is the literal "null".
>>
>>I have often encountered this situation in my JSP project where a
>>particular
>>parameter is passed in
>>as x=null, and I need to insert code everytime saying if(x == null ||
>>x.equals("null"))
>
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