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How to discard local changes in an SVN checkout?
...
Just use the svn revert command, for example:
svn revert some_file.php
It is (as every other svn command) well documented in the svnbook resource or man page, or even with the svn help command.
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Nested attributes unpermitted parameters
... white-list all nested parameters.
params.require(:widget).permit(:name, :description).tap do |whitelisted|
whitelisted[:position] = params[:widget][:position]
whitelisted[:properties] = params[:widget][:properties]
end
This method has advantage over other solutions. It allows to permit deep-...
Assign output of os.system to a variable and prevent it from being displayed on the screen [duplicat
...ne("cat /etc/services")
print cmdline('ls')
print cmdline('rpm -qa | grep "php"')
print cmdline('nslookup google.com')
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Regular expression to match balanced parentheses
...o at regex101; The pattern is pasted at (?R) which represents (?0).
Perl, PHP, Notepad++, R: perl=TRUE, Python: Regex package with (?V1) for Perl behaviour.
Ruby using subexpression calls.
With Ruby 2.0 \g<0> can be used to call full pattern.
\((?>[^)(]+|\g<0>)*\)
Demo at Rubu...
What's the best way to validate an XML file against an XSD file?
...01/XMLSchema which defines XSDs. The above code validates a WAR deployment descriptor against the URL http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd but you could just as easily validate against a local file.
You should not use the DOMParser to validate a document (unless your goal is to create a ...
How can I convert an image into a Base64 string?
...m i can put that String (encondedImage) into a remote database column with PHP+JSON ???? wich type haves to be the column of the database? VARCHAR?
– NullPointerException
Jan 28 '11 at 19:46
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Which are more performant, CTE or temporary tables?
...a CTE "can be thought of as temporary result set" this is a purely logical description. More often than not it is not materlialized in its own right.
What is a temporary table?
This is a collection of rows stored on data pages in tempdb. The data pages may reside partially or entirely in memory. A...
Can an array be top-level JSON-text?
... @Matthew - Thanks for that, I was getting horribly confused. The json.org description doesn't mention the more restrictive concept of "json-text" at all, and the RFC's kind of vague about its significance.
– mrec
Feb 15 '13 at 17:46
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How to determine the content size of a UIWebView?
...hat your problem is. Perhaps you can post a new question with some code or description?
– Ortwin Gentz
Dec 11 '10 at 23:52
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Sometimes adding a WCF Service Reference generates an empty reference.cs
...tion was thrown while running a WSDL import extension: System.ServiceModel.Description.DataContractSerializerMessageContractImporter
Error: Schema with target namespace 'http://mynamespace.com//' could not be found.
XPath to Error Source: //wsdl:definitions[@targetNamespace='http://mynamespace.com//...