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How can I exclude all “permission denied” messages from “find”?
...principle, but trying to combine them with redirection from stderr, as is done here (2> >(...)), appears to be silently ignored (in ksh 93u+).
grep -v 'Permission denied' filters out (-v) all lines (from the find command's stderr stream) that contain the phrase Permission denied and outputs ...
In the shell, what does “ 2>&1 ” mean?
...utput (stdout).
File descriptor 2 is the standard error (stderr).
Here is one way to remember this construct (although it is not entirely accurate): at first, 2>1 may look like a good way to redirect stderr to stdout. However, it will actually be interpreted as "redirect stderr to a file named 1...
Switch on Enum in Java [duplicate]
... on an enum type, then instead of writing a switch, just call the method - one line of code: done!
enum MyEnum {
SOME_ENUM_CONSTANT {
@Override
public void method() {
System.out.println("first enum constant behavior!");
}
},
ANOTHER_ENUM_CONSTANT {
...
Can enums be subclassed to add new elements?
... with numbers, with no automatic validation or anything. IMO enums are the one bit of Java which is actually better than C#.
– Jon Skeet
Nov 13 '10 at 13:21
21
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NUnit vs. xUnit
...nit and xUnit.net ?
What's the point of developing two of them, not only one?
4 Answers
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WebAPI Multiple Put/Post parameters
I am trying to post multiple parameters on a WebAPI controller. One param is from the URL, and the other from the body. Here is the url:
/offers/40D5E19D-0CD5-4FBD-92F8-43FDBB475333/prices/
...
When to use -retainCount?
...don't use -retainCount. It's a truly worthless method.
edit
Please everyone go to http://bugreport.apple.com and request that -retainCount be deprecated. The more people that ask for it, the better.
edit #2
As an update,[NSNumber numberWithInt:1] now has a retainCount of 9223372036854775807. ...
What kind of virtual machine is BEAM (the Erlang VM)?
...
The Erlang VM runs as one OS process. By default it runs one OS thread per core to achieve maximum utilisation of the machine. The number of threads and on which cores they run can be set when the VM is started.
Erlang processes are implemented e...
What does FrameLayout do?
...ifu: thanks for the explanation. I have a small query, the things we have done here, we can do by relative layout also. Then, why we use frame layout ?
– akashPatra
May 21 '18 at 7:17
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Python module for converting PDF to text [closed]
Is there any python module to convert PDF files into text? I tried one piece of code found in Activestate which uses pypdf but the text generated had no space between and was of no use.
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