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Deleting Objects in JavaScript
... itself, other remaining references would be dangling, like a C++ delete. (And accessing one of them would cause a crash. To make them all turn null would mean having extra work when deleting or extra memory for each object.)
Since Javascript is garbage collected, you don't need to delete objects t...
How do you get the “object reference” of an object in java when toString() and hashCode() have been
...urantee, but the default implementation from Sun. Things like s = "Hello" and t = "Hello" would probably result in s and t having the same identityHashCode as they really are the same object.
– TofuBeer
Feb 24 '09 at 15:23
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How to get UITableView from UITableViewCell?
I have a UITableViewCell which is linked to an object and I need to tell if the cell is visible. From the research I've done, this means I need to somehow access the UITableView that contains it (from there, there are several ways to check if it's visible). So I'm wondering if UITableViewCell ...
Git - Ignore files during merge
...
I got over this issue by using git merge command with the --no-commit option and then explicitly removed the staged file and ignore the changes to the file.
E.g.: say I want to ignore any changes to myfile.txt I proceed as follows:
git merge --no-ff --no-commit <mer...
Git authentication fails after enabling 2FA
I just enabled 2FA (I can't think of any other changes I made) and git asked for my username and password. I provided both, but they were "wrong". I tried many of the solutions here: Git push requires username and password but that didn't work. In particular, when switching from https to ssh, the ...
When do we need to set ProcessStartInfo.UseShellExecute to True?
...en a specified program or file - it is roughly equivalnt to typing the command to be executed into the run dialog and clicking OK, which means that it can be used to (for example):
Open .html files or web using the default browser without needing to know what that browser is,
Open a word document w...
Why it's not possible to use regex to parse HTML/XML: a formal explanation in layman's terms
...a regular
expression) does not have memory apart from the state it's in, and if
you have arbitrarily deep nesting, you need an arbitrarily large
automaton, which collides with the notion of a finite automaton.
The definition of regular expressions is equivalent to the fact that a test of whe...
How to clone a case class instance and change just one field in Scala?
...on different social networks. Instances of that class are fully immutable, and are held in immutable collections, to be eventually modified by an Akka actor.
...
How does “make” app know default target to build if no target is specified?
...s the first target depends on.
The GNU Make Manual covers all this stuff, and is a surprisingly easy and informative read.
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How can I get a list of all classes within current module in Python?
...ules[__name__]):
if inspect.isclass(obj):
print(obj)
And even better:
clsmembers = inspect.getmembers(sys.modules[__name__], inspect.isclass)
Because inspect.getmembers() takes a predicate.
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