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Count the number occurrences of a character in a string
...'s the simplest way to count the number of occurrences of a character in a string?
19 Answers
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Convert String array to ArrayList [duplicate]
I want to convert String array to ArrayList . For example String array is like:
5 Answers
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c# datatable to csv
... opens fine in Excel, maybe your issue was the trailing comma
.net = 3.5
StringBuilder sb = new StringBuilder();
string[] columnNames = dt.Columns.Cast<DataColumn>().
Select(column => column.ColumnName).
ToArray();
sb.A...
When should I use “this” in a class?
...er "name" to the instance variable "name".
public class Foo
{
private String name;
public void setName(String name) {
this.name = name;
}
}
Case 2: Using this as an argument passed to another object.
public class Foo
{
public String useBarMethod() {
Bar theBar = ...
Splitting a Java String by the pipe symbol using split(“|”)
...ing the OR operator. You need to escape that character using \ (written in String as "\\" since \ is also a metacharacter in String literals and require another \ to escape it).
You can also use
test.split(Pattern.quote("|"));
and let Pattern.quote create the escaped version of the regex repres...
How to remove leading and trailing zeros in a string? Python
I have several alphanumeric strings like these
6 Answers
6
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Reformat XML in Visual Studio 2010
...
Not 100% sure about VS2010, but in VS2015 if you copy and paste a long string of XML into an .XML document, it will automatically reformat it.
("Format Document" is usually the way to go, just mentioning another option.)
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Truncate a string straight JavaScript
I'd like to truncate a dynamically loaded string using straight JavaScript. It's a url, so there are no spaces, and I obviously don't care about word boundaries, just characters.
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How do I check if string contains substring? [duplicate]
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if (~str.indexOf("Yes"))
This works because indexOf() returns -1 if the string wasn't found at all.
Note that this is case-sensitive.
If you want a case-insensitive search, you can write
if (str.toLowerCase().indexOf("yes") >= 0)
Or:
if (/yes/i.test(str))
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Simplest two-way encryption using PHP
... * Encrypts (but does not authenticate) a message
*
* @param string $message - plaintext message
* @param string $key - encryption key (raw binary expected)
* @param boolean $encode - set to TRUE to return a base64-encoded
* @return string (raw binary)
*/
publi...