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Are global variables in PHP considered bad practice? If so, why?
...ness.
Don't concern yourself overly with applying standards or constructs from different languages to PHP. Another common pitfall is trying to turn PHP into a pure OOP language by sticking object models on top of everything.
Like anything else, use "global" variables, procedural code, a particular...
How to read the RGB value of a given pixel in Python?
...ich returns a pixel access object which you can manipulate like an array:
from PIL import Image
im = Image.open('dead_parrot.jpg') # Can be many different formats.
pix = im.load()
print im.size # Get the width and hight of the image for iterating over
print pix[x,y] # Get the RGBA Value of the a...
How to convert SecureString to System.String?
...e length stored in the BSTR will be a copy of the length already available from SecureString.Length.
– Ben Voigt
Nov 8 '19 at 15:27
...
How to remove globally a package from Composer?
... many commands like install, require or update as if you were running them from the COMPOSER_HOME directory.
Read the related documentation here: http://getcomposer.org/doc/03-cli.md#global
COMPOSER_HOME depends on your system (on Linux it's ~/.composer), see http://getcomposer.org/doc/03-cli.md#...
log messages appearing twice with Python Logging
...odules were loaded, the logger variable used, was not the one instantiated from one of my classes, but the logger variable present on Python3 cache, and the handler was added every 60 sec by an AppScheduler which I configured. So, this if not logger.handlers is a pretty smart way to avoid this type ...
Creating a simple XML file using python
...r the implementation in the Python standard library
Introductory Tutorial (From the original author's site)
LXML etree tutorial. (With example code for loading the best available option from all major ElementTree implementations)
As a final note, either cElementTree or LXML should be fast enough f...
How is “=default” different from “{}” for default constructor and destructor?
...e constructors/assignment, destructors etc) means something very different from simply doing {}. With the latter, the function becomes "user-provided". And that changes everything.
This is a trivial class by C++11's definition:
struct Trivial
{
int foo;
};
If you attempt to default construct o...
Using a dispatch_once singleton model in Swift
...e and the nested struct approach if you need to support earlier versions.
From my experience with Swift there are three approaches to implement the Singleton pattern that support lazy initialization and thread safety.
Class constant
class Singleton {
static let sharedInstance = Singleton()
}
...
Should I use int or Int32
...ommendation. They rewrote the paragraph about aliases of simple types. So, from today perspective it is unclear what use is favored.
– SergICE
Aug 19 at 13:12
add a comment
...
Objective-C: Extract filename from path string
...
Taken from the NSString reference, you can use :
NSString *theFileName = [[string lastPathComponent] stringByDeletingPathExtension];
The lastPathComponent call will return thefile.ext, and the stringByDeletingPathExtension will ...