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When to use volatile with multi threading?
...e semantics on volatile variables.
[Update for C++11]
The C++11 Standard now does acknowledge multithreading directly in the memory model and the lanuage, and it provides library facilities to deal with it in a platform-independant way. However the semantics of volatile still have not changed. v...
SET NOCOUNT ON usage
...
Ok now I've done my research, here is the deal:
In TDS protocol, SET NOCOUNT ON only saves 9-bytes per query while the text "SET NOCOUNT ON" itself is a whopping 14 bytes. I used to think that 123 row(s) affected was returned f...
What Xcode keyboard shortcuts do you use regularly? [closed]
...quently use cmd-option-j to filter then navigate to source files. However now I find the open quickly command better (cmd-shift-O , type a few chars, return)
– Robert
Nov 30 '12 at 12:45
...
Make .gitignore ignore everything except a few files
... in anything other than the root dir won't be found anyway. I'm using this now (with *.pl) and all *.pl files are being ignored even though there are many in the subdirectories below the .gitignore file
– PandaWood
Nov 6 '11 at 1:44
...
Python subprocess.Popen “OSError: [Errno 12] Cannot allocate memory”
...mit configuration (in order to influence the outcome of the enforcement.)
Now, in order to actually move forward I'd say you're left with two options:
switch to a larger instance, or
put some coding effort into more effectively controlling your script's memory footprint
NOTE that the coding eff...
Java 7 language features with Android
...ng if anyone has tried using new Java 7 language features with Android?
I know that Android reads the bytecode that Java spits out and turns it to dex. So I guess my question is can it understand the bytecode of Java 7?
...
Why would I ever use push_back instead of emplace_back?
...mplace_back miss the full picture.
Last year, I gave a presentation at C++Now on Type Deduction in C++14. I start talking about push_back vs. emplace_back at 13:49, but there is useful information that provides some supporting evidence prior to that.
The real primary difference has to do with impl...
How do I exit the Vim editor?
...MAND mode, where you can type short, few character commands, blindly. You know what you are doing; this isn't for amateurs.
When you want to actually edit text, you should go to INSERT mode with some one-character command:
i: go to INSERT in the place of the cursor
I: go to INSERT mode at the beg...
How can I dynamically create derived classes from a base class
...ter names.
The parameter verification in __init__ just does not allow
unknown parameters, if you need other verifications, like
type, or that they are mandatory, just add the logic
there:
class BaseClass(object):
def __init__(self, classtype):
self._type = classtype
def ClassFactory(...
What are “named tuples” in Python?
... is the answer you always find, it might be worth mentioning that there is now also typing.NamedTuple which allows for type hints and is especially convenient for subclassing.
– DerWeh
Dec 23 '19 at 15:55
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