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Best way to define private methods for a class in Objective-C
...n Objective-C 2.0 (meaning Mac OS X Leopard, iPhone OS 2.0, and later) you can create a category with an empty name (i.e. @interface MyClass ()) called Class Extension. What's unique about a class extension is that the method implementations must go in the same @implementation MyClass as the public ...
Iterate over the lines of a string
...1())'
10000 loops, best of 3: 61.5 usec per loop
Note we need the list() call to ensure the iterators are traversed, not just built.
IOW, the naive implementation is so much faster it isn't even funny: 6 times faster than my attempt with find calls, which in turn is 4 times faster than a lower-le...
How to hide command output in Bash
...mpatible with >&-:
/your/first/command >&- 2>&-
Be careful to note the order: >&- closes stdout, which is what you want to do; &>- redirects stdout and stderr to a file named - (hyphen), which is not what what you want to do. It'll look the same at first, but th...
Python module os.chmod(file, 664) does not change the permission to rw-rw-r— but -w--wx----
...t forum
If you're wondering why that leading zero is important, it's because
permissions are set as an octal integer, and Python automagically
treats any integer with a leading zero as octal. So os.chmod("file",
484) (in decimal) would give the same result.
What you are doing is passing ...
How do I edit an existing tag message in git?
...
It should also be noted that you can also append multiple messages (they get separated by a new line - on GitHub) git tag <tag name> <tag name> -f -m "<new message>" -m "<new message>" -m "<new message>"
– ...
Why do people use __(double underscore) so much in C++
...om the C++ standard; it may be good suggestion.
– stucash
Aug 3 '18 at 8:13
1
@cz Namespaces are ...
How to add a line break in C# .NET documentation
...
You can use a <para /> tag to produce a paragraph break or you can wrap text in <para></para> tags as a way to group the text and add the blank line after it, but there is no equivalent to <br /> or anythi...
How to destroy an object?
...
You're looking for unset().
But take into account that you can't explicitly destroy an object.
It will stay there, however if you unset the object and your script pushes PHP to the memory limits the objects not needed will be garbage collected. I would go with unset() (as opposed to...
Parallel foreach with asynchronous lambda
...
If you just want simple parallelism, you can do this:
var bag = new ConcurrentBag<object>();
var tasks = myCollection.Select(async item =>
{
// some pre stuff
var response = await GetData(item);
bag.Add(response);
// some post stuff
});
await Task....
Extract traceback info from an exception object
...ttribute that contains the traceback. This attribute is also writable, and can be conveniently set using the with_traceback method of exceptions:
raise Exception("foo occurred").with_traceback(tracebackobj)
These features are minimally described as part of the raise documentation.
All credit fo...