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Reverse a string in Python
... - by leaving begin and end off and specifying a step of -1, it reverses a string.
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Why is it Valid to Concatenate Null Strings but not to Call “null.ToString()”?
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The reason for first one working:
From MSDN:
In string concatenation operations,the C# compiler treats a null string the same as an empty string, but it does not convert the value of the original null string.
More information on the + binary operator:
The binary + operat...
Bold words in a string of strings.xml in Android
I have a long text in one of the strings at strings.xml. I want to make bold and change the color of some words in that text.
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Append values to query string
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You could use the HttpUtility.ParseQueryString method and an UriBuilder which provides a nice way to work with query string parameters without worrying about things like parsing, url encoding, ...:
string longurl = "http://somesite.com/news.php?article=1&lang=...
How to check if a string contains a substring in Bash
I have a string in Bash:
26 Answers
26
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How to convert a String to CharSequence?
How to convert String to CharSequence in Java?
5 Answers
5
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What is the difference between String.Empty and “” (empty string)?
In .NET, what is the difference between String.Empty and "" , and are they interchangable, or is there some underlying reference or Localization issues around equality that String.Empty will ensure are not a problem?
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List vs List
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The difference is that, for example, a
List<HashMap<String,String>>
is a
List<? extends Map<String,String>>
but not a
List<Map<String,String>>
So:
void withWilds( List<? extends Map<String,String>> foo ){}
void noWilds( List&l...
?? Coalesce for empty string?
Something I find myself doing more and more is checking a string for empty (as in "" or null) and a conditional operator.
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Modify request parameter with servlet filter
... are the characters allowed by the Javascript validation */
static String allowedChars = "+-0123456789#*";
public FilteredRequest(ServletRequest request) {
super((HttpServletRequest)request);
}
public String sanitize(String input) {
String re...