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List all sequences in a Postgres db 8.1 with SQL
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The following query gives names of all sequences.
SELECT c.relname FROM pg_class c WHERE c.relkind = 'S';
Typically a sequence is named as ${table}_id_seq. Simple regex pattern matching will give you the table name.
To get last value of a sequence u...
Twig ternary operator, Shorthand if-then-else
...d in company_abilities) ? 'selected' : '' }}
The ternary operator is documented under 'other operators'
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How to link to a named anchor in Multimarkdown?
I have come across a number of mentions of MultiMarkdown's support for internal links / named anchors but I am unable to find a single example of how to actually do it.
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Target elements with multiple classes, within one rule
I have some HTML that would have elements with multiple classes, and I need to assign them within one rule, so that the same classes could be different within different containers. Say I have this in my CSS:
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How to center an element horizontally and vertically
...50%) translateY(-50%) to dynamically vertically/horizontally center the element.
.container {
position: absolute;
top: 50%;
left: 50%;
-moz-transform: translateX(-50%) translateY(-50%);
-webkit-transform: translateX(-50%) translateY(-50%);
transform: translateX(-5...
How do I insert a linebreak where the cursor is without entering into insert mode in Vim?
...rsor is in Vim without entering into insert mode? Here's an example ( [x] means cursor is on x ):
15 Answers
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How to import a class from default package
I am using Eclipse 3.5 and I have created a project with some package structure along with the default package. I have one class in default package - Calculations.java and I want to make the use of that class in any of the package (for instance in com.company.calc ). When I try to make the use of...
How do I read / convert an InputStream into a String in Java?
...ng Apache commons IOUtils to copy the InputStream into a StringWriter... something like
StringWriter writer = new StringWriter();
IOUtils.copy(inputStream, writer, encoding);
String theString = writer.toString();
or even
// NB: does not close inputStream, you'll have to use try-with-resources fo...
what is the difference between XSD and WSDL
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XSD defines a schema which is a definition of how an XML document can be structured. You can use it to check that a given XML document is valid and follows the rules you've laid out in the schema.
WSDL is a XML document that describes a web service. It shows which operations are avai...
iOS Detection of Screenshot?
... you attempt to take a screenshot while the picture is showing using the home-power key combo, it will tell the sender you tried to take a screenshot.
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