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What exactly does Perl's “bless” do?
...Now when you invoke a method on $object, Perl know which package to search for the method.
If the second argument is omitted, as in your example, the current package/class is used.
For the sake of clarity, your example might be written as follows:
sub new {
my $class = shift;
my $self = { }...
Best practice: PHP Magic Methods __set and __get [duplicate]
...
I have been exactly in your case in the past. And I went for magic methods.
This was a mistake, the last part of your question says it all :
this is slower (than getters/setters)
there is no auto-completion (and this is a major problem actually), and type management by the IDE f...
Assign a variable inside a Block to a variable outside a Block
...is line of code to resolve your problem:
__block Person *aPerson = nil;
For more details, please refer to this tutorial: Blocks and Variables
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Can you add new statements to Python's syntax?
...roach here: I'm going to add an until statement to Python.
All the coding for this article was done against the cutting-edge Py3k branch in the Python Mercurial repository mirror.
The until statement
Some languages, like Ruby, have an until statement, which is the complement to while (until num =...
What's the dSYM and how to use it? (iOS SDK)
...
dSYM files store the debug symbols for your app
Services like crashlytics use it to replace the symbols in the crash logs with the appropriate methods names so it will be readable and will make sense.
The benefit of using the dSYM is that you don't need to s...
Is cout synchronized/thread-safe?
...current access to a synchronized (§27.5.3.4) standard iostream object’s formatted and unformatted input (§27.7.2.1) and output (§27.7.3.1) functions or a standard C stream by multiple threads shall not result
in a data race (§1.10). [ Note: Users must still synchronize concurrent use of thes...
How to delete (not cut) in Vim?
...y delete something: "_d.
Use "_dP to paste something and keep it available for further pasting.
For the second question, you could use <C-o>dw. <C-o> is used to execute a normal command without leaving the insert mode.
You can setup your own mappings to save typing, of course. I have t...
What is the combinatory logic equivalent of intuitionistic type theory?
...nators, thus making it point-free. I was wondering what the equivalent was for Agda. I.e., can one make a dependently typed functional programming language equivalent to Agda without using any variables?
...
How can I color Python logging output?
...e(8)
#The background is set with 40 plus the number of the color, and the foreground with 30
#These are the sequences need to get colored ouput
RESET_SEQ = "\033[0m"
COLOR_SEQ = "\033[1;%dm"
BOLD_SEQ = "\033[1m"
def formatter_message(message, use_color = True):
if use_color:
message =...
How to import a module given the full path?
...
For Python 3.5+ use:
import importlib.util
spec = importlib.util.spec_from_file_location("module.name", "/path/to/file.py")
foo = importlib.util.module_from_spec(spec)
spec.loader.exec_module(foo)
foo.MyClass()
For Python ...