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What is the difference between sigaction and signal?
...ion() avoids - unless you use the flags explicitly added to sigaction() to allow it to faithfully simulate the old signal() behaviour.
The signal() function does not (necessarily) block other signals from arriving while the current handler is executing; sigaction() can block other signals until the...
How to create a DataTable in C# and how to add rows?
...ma/structure, do:
dt.WriteXMLSchema("dtSchemaOrStructure.xml");
Additionally, you can also export your data:
dt.WriteXML("dtDataxml");
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Delete/Reset all entries in Core Data?
Do you know of any way to delete all of the entries stored in Core Data? My schema should stay the same; I just want to reset it to blank.
...
How to write iOS app purely in C
...d in remain the same whether or not
// you are using VA_ARGS. This is actually the basis of the objective-c
// runtime (objc_msgSend), so we are probably fine here, this would be
// the last thing I would expect to break.
extern int UIApplicationMain(int, ...);
// Entry point of the application....
ExpressJS How to structure an application?
... December 2016
How big is your application?
Web applications are not all the same, and there's not, in my opinion, a single code structure that should be applied to all express.js applications.
If your application is small, you don't need such a deep directory structure as exemplified here. J...
Named colors in matplotlib
... have been moved under the 'xkcd:' prefix since I posted this answer originally.
I really didn't change much from the matplotlib example, but here is the code for completeness.
import matplotlib.pyplot as plt
from matplotlib import colors as mcolors
colors = dict(mcolors.BASE_COLORS, **mcolors...
Relatively position an element without it taking up space in document flow
... creating a zero-width, zero-height, relatively positioned element, essentially solely for the purpose of creating a reference point for position, and an absolutely positioned element within that:
<div style="position: relative; width: 0; height: 0">
<div style="position: absolute; lef...
Convert objective-c typedef to its string equivalent
...
This is really a C question, not specific to Objective-C (which is a superset of the C language). Enums in C are represented as integers. So you need to write a function that returns a string given an enum value. There are many ways to...
What is an initialization block?
...
First of all, there are two types of initialization blocks:
instance initialization blocks, and
static initialization blocks.
This code should illustrate the use of them and in which order they are executed:
public class Test {
...
When to use nested classes and classes nested in modules?
...
As for your second observation, classes nested inside of modules are generally used to namespace the classes. For instance:
module ActiveRecord
class Base
end
end
differs from
module ActionMailer
class Base
end
end
Although this is not the only use of classes nested inside of modules,...