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undefined method `source_index' for Gem:Module (NoMethodError)
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Anyone using RVM can call rvm rubygems latest-1.8 to downgrade rubygems and fix this issue.
– martin
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How to secure database passwords in PHP?
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pdavispdavis
3,08711 gold badge2626 silver badges2929 bronze badges
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How do I install Python OpenCV through Conda?
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This worked fine with Anaconda 2.7 on Win10 64bit, whereas conda install opencv did not.
– Anton Schwaighofer
Apr 18 '16 at 12:34
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What's the strangest corner case you've seen in C# or .NET? [closed]
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Answer:
On 32-bit JIT it should result in a StackOverflowException
On 64-bit JIT it should print all the numbers to int.MaxValue
This is because the 64-bit JIT compiler applies tail call optimisation, whereas the 32-bit JIT does not.
Unfortunately I haven't got a 64-bit machine to hand to v...
Call by name vs call by value in Scala, clarification needed
...wered Nov 12 '12 at 1:45
resilva87resilva87
2,75555 gold badges2828 silver badges4242 bronze badges
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How can I get the source code of a Python function?
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87
If you are using IPython, then you need to type "foo??"
In [19]: foo??
Signature: foo(arg1, ar...
Android emulator-5554 offline
...0 127.0.0.1:5554 0.0.0.0:* LISTEN 4848/emulator64-x86
tcp 0 0 127.0.0.1:5555 0.0.0.0:* LISTEN 4848/emulator64-x86
This tells me that the process id 4848 (yours will likely be different) is still listening on port 5554. You can no...
What is size_t in C?
... one implementation defines it as such doesn't mean all do. Case in point: 64-bit Windows. unsigned long is 32-bit, size_t is 64-bit.
– Tim Čas
Dec 28 '14 at 21:40
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How to turn on/off ReactJS 'development mode'?
...e the production build which skips development warnings and is faster. See fb.me/react-minification for more details.
react-dom, redux, react-redux behave similarly. Redux displays a warning message. I believe react-dom does too.
So you are clearly encouraged to use the production version from /di...
How to use the PI constant in C++
...h.h (2014) it is defined as:
# define M_PI 3.14159265358979323846 /* pi */
but check your math.h for more. An extract from the "old" math.h (in 2009):
/* Define _USE_MATH_DEFINES before including math.h to expose these macro
* definitions for common math constants. These are placed...