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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 = { }...
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...
Dynamically updating plot in matplotlib
...ts a graph of the collected data against arrival time. The time of arrival for the data is uncertain. I want the plot to be updated when data is received. I searched on how to do this and found two methods:
...
Python JSON serialize a Decimal object
...ich wouldn't work (see my comment below), so...
return (str(o) for o in [o])
return super(DecimalEncoder, self).default(o)
Then use it like so:
json.dumps({'x': decimal.Decimal('5.5')}, cls=DecimalEncoder)
...
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...
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 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...
Are lists thread-safe?
...stead of lists and .pop() . Is this because lists are not thread-safe, or for some other reason?
4 Answers
...
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 =...
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...