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Undefined reference to `sin` [duplicate]
...mented as part of the "Single UNIX Specification". This history of this standard is interesting, and is known by many names (IEEE Std 1003.1, X/Open Portability Guide, POSIX, Spec 1170).
This standard, specifically separates out the "Standard C library" routines from the "Standard C Mathematical...
In Java, what does NaN mean?
...
Taken from this page:
"NaN" stands for "not a number". "Nan"
is produced if a floating point
operation has some input parameters
that cause the operation to produce
some undefined result. For example,
0.0 divided by 0.0 is arithmetically undefin...
Upgrade python in a virtualenv
...
Did you see this? If I haven't misunderstand that answer, you may try to create a new virtualenv on top of the old one. You just need to know which python is going to use your virtualenv (you will need to see your virtualenv version).
If your virtualenv is install...
Using GZIP compression with Spring Boot/MVC/JavaConfig with RESTful
...oot/MVC with annotation-based java-config for series of RESTful services and we want to selectively enable HTTP GZIP stream compression on some API responses.
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How to use range-based for() loop with std::map?
...t;< std::endl;
}
if you don't plan on modifying the values.
In C++11 and C++14, you can use enhanced for loops to extract out each pair on its own, then manually extract the keys and values:
for (const auto& kv : myMap) {
std::cout << kv.first << " has value " << kv....
In PHP what does it mean by a function being binary-safe?
...you pass it arbitrary binary data (i.e. strings containing non-ASCII bytes and/or null bytes).
For example, a non-binary-safe function might be based on a C function which expects null-terminated strings, so if the string contains a null character, the function would ignore anything after it.
This...
What is this 'Lambda' everyone keeps speaking of?
...abstract away boilerplate code. For example loops. We're used to write for and while loops all day long. But this is code that does not be written. We could extract the code inside the loop, the most important part of the loop, and abstract away the rest:
for (var i=0; i<array.length; i++) {
...
How do I get jQuery autocompletion in TypeScript?
... Is jquery.d.ts provided by JQUERY or custom. If custom, how do we update and keep sync with new version of JQUERY?
– Nil Pun
Oct 13 '12 at 21:13
2
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Run PostgreSQL queries from the command line
I inserted a data into a table....I wanna see now whole table with rows and columns and data. How I can display it through command?
...
How do you split a list into evenly sized chunks?
I have a list of arbitrary length, and I need to split it up into equal size chunks and operate on it. There are some obvious ways to do this, like keeping a counter and two lists, and when the second list fills up, add it to the first list and empty the second list for the next round of data, but t...