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Java's L number (long) specification
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There are specific suffixes for long (e.g. 39832L), float (e.g. 2.4f) and double (e.g. -7.832d).
If there is no suffix, and it is an integral type (e.g. 5623), it is assumed to be an int. If it is not an integral type (e.g. 3.14159), it is assumed to be a double.
In all...
Stream vs Views vs Iterators
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182
First, they are all non-strict. That has a particular mathematical meaning related to functions,...
insert vs emplace vs operator[] in c++ map
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236
In the particular case of a map the old options were only two: operator[] and insert (differen...
Two submit buttons in one form
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answered Feb 13 '09 at 21:48
GregGreg
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How can I access an object property named as a variable in php?
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222
Since the name of your property is the string '$t', you can access it like this:
echo $object...
How do I get a list of column names from a psycopg2 cursor?
...tly from the selected column names, and recall seeing that python's psycopg2 module supports this feature.
10 Answers
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How to read XML using XPath in Java
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This will get you the second:
/howto/topic[@name='PowerBuilder']/url[2]/text()
You get that with this code:
expr.evaluate(doc, XPathConstants.STRING);
If you don't know how many URLs are in a given node, then you should rather do something like this:
XPathExpression expr = xpath.compile(...
Get first key in a (possibly) associative array?
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21 Answers
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Active
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Git: Correct way to change Active Branch in a bare repository?
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282
If you have access to the remote bare repo, this article suggests:
git symbolic-ref HEAD refs...