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How to read XML using XPath in Java
...er = factory.newDocumentBuilder();
Document doc = builder.parse(<uri_as_string>);
XPathFactory xPathfactory = XPathFactory.newInstance();
XPath xpath = xPathfactory.newXPath();
XPathExpression expr = xpath.compile(<xpath_expression>);
Then you call expr.evaluate() passing in the docume...
Remove first 4 characters of a string with PHP
How can I remove the first 4 characters of a string using PHP?
7 Answers
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Adding two numbers concatenates them instead of calculating the sum
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They are actually strings, not numbers. The easiest way to produce a number from a string is to prepend it with +:
var x = +y + +z;
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Evaluate expression given as a string
...R can use its eval() function to perform calculations provided by e.g. a string.
7 Answers
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How to create a generic array in Java?
...ill not work if the array is treated as a typed array of any kind, such as String[] s=b; in the above test() method. That's because the array of E isn't really, it's Object[]. This matters if you want, e.g. a List<String>[] - you can't use an Object[] for that, you must have a List[] specifi...
What does the PHP error message “Notice: Use of undefined constant” mean?
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You should quote your array keys:
$department = mysql_real_escape_string($_POST['department']);
$name = mysql_real_escape_string($_POST['name']);
$email = mysql_real_escape_string($_POST['email']);
$message = mysql_real_escape_string($_POST['message']);
As is, it was looking for constants...
Add zero-padding to a string
How do I add "0" padding to a string so that my string length is always 4?
5 Answers
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How to grep and replace
I need to recursively search for a specified string within all files and subdirectories within a directory and replace this string with another string.
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How to set SQL Server connection string?
...hen I connect my application to SQL Server on my PC, I know the connection string (server name, password etc.), but when I connect it to another PC, the SQL Server connection string is different. Is there a common account in SQL Server that come with default account that can connect? I have heard ab...
Converting camel case to underscore case in ruby
Is there any ready function which converts camel case Strings into underscore separated string?
11 Answers
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