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warning: incompatible implicit declaration of built-in function ‘xyz’
... In an implicit declaration, the return type is int if I recall correctly. Now, GCC has built-in definitions for some standard functions. If an implicit declaration does not match the built-in definition, you get this warning.
To fix the problem, you have to declare the functions before using them...
Inheriting class methods from modules / mixins in Ruby
It is known that in Ruby, class methods get inherited:
4 Answers
4
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What are the effects of exceptions on performance in Java?
... class is loaded by the VM) and it makes throw not quite as slow. I don't know which JVM uses this new, better technique...
...but are you writing in Java so your code later on only runs on one JVM on one specific system? Since if it may ever run on any other platform or any other JVM version (pos...
Why is `[` better than `subset`?
...eval(expr, envir, enclos) : object 'cyl' not found
because R no longer "knows" where to find the object called 'cyl'. He also points out the truly bizarre stuff that can happen if by chance there is an object called 'cyl' in the global environment:
cyl <- 4
subscramble(mtcars, cyl == 4)
cyl &...
Difference between variable declaration syntaxes in Javascript (including global variables)?
...undefined.
This only applies to the window object, and only (as far as I know) to IE8 and earlier (or IE9-IE11 in the broken "compatibility" mode). Other browsers are fine with deleting window properties, subject to the rules above.
When var happens
The variables defined via the var statement a...
How to find if directory exists in Python
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@CamilStaps This question was viewed 354000 times (by now). Answers here are not only for OP, they are for anyone who could come here for whatever reason. aganders3's answer is pertinent even if it does not directly resolve OP's problem.
– Gabriel
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How to set a bitmap from resource
... R.drawable.android_logo
);
Now you can use this bitmap object, whether you want to store it, or to use it in google maps while drawing a pic on fixed latitude and longitude, or to use some where else
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jQuery see if any or no checkboxes are selected
I know how to see if an individual checkbox is selected or not.
8 Answers
8
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How do I export UIImage array as a movie?
...erious problem: I have an NSArray with several UIImage objects. What I now want to do, is create movie from those UIImages . But I don't have any idea how to do so.
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Is mongodb running?
... quickly checking if mongodb is running, this quick nc trick will let you know.
nc -zvv localhost 27017
The above command assumes that you are running it on the default port on localhost.
For auto-starting it, you might want to look at this thread.
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