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Undefined reference to `pow' and `floor'

... Look in /lib or /usr/lib. The libraries are all named lib<name>.a or lib<name>.so - it's the "<name>" you put after the -l. In this case, the math library is named libm.so, so we call it -lm. – ams Dec 29 '11 at ...
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If table exists drop table then create it, if it does not exist just create it

...s case than not to cover, see locking note below). Second RENAME ... atomically replaces table definition, refer to MySQL manual for details. At last, DROP ... just cleans up the old table, obviously. Wrapping all statements with something like SELECT GET_LOCK('__upgrade', -1); ... DO RELEASE_LOCK...
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How to create a custom string representation for a class object?

... @RobertSiemer Why? While his answer is not specifically targeting the OP's question, it's still helpful. It helped me. And at a glance, I don't see any question asking for instance implementation. So probably people land on this page first. – akinuri ...
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How do you use version control with Access development?

...an Access solution. It has a good amount of VBA, a number of queries, a small amount of tables, and a few forms for data entry & report generation. It's an ideal candidate for Access. ...
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Regular expression to match URLs in Java

...s. */ public class Patterns { /** * Regular expression to match all IANA top-level domains. * List accurate as of 2011/07/18. List taken from: * http://data.iana.org/TLD/tlds-alpha-by-domain.txt * This pattern is auto-generated by frameworks/ex/common/tools/make-iana-tl...
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How to process SIGTERM signal gracefully?

... @Mausy5043 Python allows you to not have parenthesis for defining classes. Although it's perfectly fine for python 3.x, but for python 2.x, best practice is to use "class XYZ(object):". Reason being: docs.python.org/2/reference/datamodel.html#...
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How to calculate the bounding box for a given lat/lng location?

... I suggest to approximate locally the Earth surface as a sphere with radius given by the WGS84 ellipsoid at the given latitude. I suspect that the exact computation of latMin and latMax would require elliptic functions and would not yield an appreciable ...
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How can I change the color of pagination dots of UIPageControl?

... f = CGRectMake(0, 0, 320, 20); PageControl *pageControl = [[[PageControl alloc] initWithFrame:f] autorelease]; pageControl.numberOfPages = 10; pageControl.currentPage = 5; pageControl.delegate = self; [self addSubview:pageControl]; Header file: // // PageControl.h // // Replacement for UIPage...
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How do I check if an object has a specific property in JavaScript?

... I'm really confused by the answers that have been given - most of them are just outright incorrect. Of course you can have object properties that have undefined, null, or false values. So simply reducing the property check to typeo...
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How to get name of exception that was caught in Python?

...n't want to catch particular exceptions known in advance. I want to catch all exceptions. – Rob Bednark Apr 27 '18 at 16:10 add a comment  |  ...