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undefined reference to boost::system::system_category() when compiling
I'm trying to compile a program on Ubuntu 11.10 that uses the Boost libraries. I have the 1.46-dev Boost libraries from the Ubuntu Repository installed, but I get an error when compiling the program.
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Rename Files and Directories (Add Prefix)
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What is Java String interning?
...tents share same memory. So if you have list of names where 'john' appears 1000 times, by interning you ensure only one 'john' is actually allocated memory.
This can be useful to reduce memory requirements of your program. But be aware that the cache is maintained by JVM in permanent memory pool wh...
Should Gemfile.lock be included in .gitignore?
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edited Jan 9 at 15:15
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Evaluate empty or null JSTL c tags
...se the empty keyword in a <c:if> for this:
<c:if test="${empty var1}">
var1 is empty or null.
</c:if>
<c:if test="${not empty var1}">
var1 is NOT empty or null.
</c:if>
Or the <c:choose>:
<c:choose>
<c:when test="${empty var1}">
va...
Get type of all variables
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You need to use get to obtain the value rather than the character name of the object as return...
How are software license keys generated?
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How to debug JavaScript / jQuery event bindings with Firebug or similar tools?
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15 Answers
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