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How does zip(*[iter(s)]*n) work in Python?
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answered Feb 9 '10 at 23:15
Ignacio Vazquez-AbramsIgnacio Vazquez-Abrams
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How do I get SUM function in MySQL to return '0' if no values are found?
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307
Use COALESCE to avoid that outcome.
SELECT COALESCE(SUM(column),0)
FROM table
WHERE ...
T...
What is the “-->” operator in C++?
...ised that the following snippet compiled and worked in both Visual Studio 2008 and G++ 4.4.
25 Answers
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How can I sort arrays and data in PHP?
...te a comparison function. That function takes two elements and must return 0 if these elements are considered equal, a value lower than 0 if the first value is lower and a value higher than 0 if the first value is higher. That's all that's needed:
function cmp(array $a, array $b) {
if ($a['foo']...
Elastic Search: how to see the indexed data
...ing on your local machine), open a browser window to:
http://localhost:9200/_plugin/head/
Alternatively, you can just use curl from the command line, eg:
Check the mapping for an index:
curl -XGET 'http://127.0.0.1:9200/my_index/_mapping?pretty=1'
Get some sample docs:
curl -XGET 'http:...
How to linebreak an svg text within javascript?
... occur, you can break your text into multiple <tspan>s, each with x="0" and dy="1.4em" to simulate actual lines of text. For example:
<g transform="translate(123 456)"><!-- replace with your target upper left corner coordinates -->
<text x="0" y="0">
<tspan x="0" dy...
How to quit scala 2.11.0 REPL?
In the last version of scala (2.10.3) REPL, I can type exit to quit from REPL. However, in Scala 2.11.0 this doesn't work.
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How to find where gem files are installed
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10 Answers
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Maven check for updated dependencies in repository
...lable:
[INFO] org.apache.maven:maven-artifact ........................ 2.0 -> 2.0.9
[INFO] org.apache.maven:maven-plugin-api ...................... 2.0 -> 2.0.9
[INFO] org.apache.maven:maven-project ....................... 2.0.2 -> 2.0.9
[INFO] org.codehaus.plexus:plexus-utils ........
Maven dependency for Servlet 3.0 API?
How can I tell Maven 2 to load the Servlet 3.0 API?
10 Answers
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