大约有 47,000 项符合查询结果（耗时：0.0783秒） [XML]
Why does casting int to invalid enum value NOT throw exception?
...ted .NET. An enum is backed by another value type (int, short, byte, etc), and so it can actually have any value that is valid for those value types.
I personally am not a fan of the way this works, so I made a series of utility methods:
/// <summary>
/// Utility methods for enum values. Thi...
How to output something in PowerShell
... PowerShell script from within a batch file. The script fetches a web page and checks whether the page's content is the string "OK".
...
How to round a number to significant figures in Python
... You should use log10(abs(x)), otherwise negative numbers will fail (And treat x == 0 separately of course)
– Tobias Kienzler
Jul 30 '13 at 8:06
2
...
Python Dictionary Comprehension
...to add keys to an existing dictionary. Also, you have to specify the keys and values, although of course you can specify a dummy value if you like.
>>> d = {n: n**2 for n in range(5)}
>>> print d
{0: 0, 1: 1, 2: 4, 3: 9, 4: 16}
If you want to set them all to True:
>>>...
How do I make an http request using cookies on Android?
I'd like to make an http request to a remote server while properly handling cookies (eg. storing cookies sent by the server, and sending those cookies when I make subsequent requests). It'd be nice to preserve any and all cookies, but really the only one I care about is the session cookie.
...
Int division: Why is the result of 1/3 == 0?
...
The two operands (1 and 3) are integers, therefore integer arithmetic (division here) is used. Declaring the result variable as double just causes an implicit conversion to occur after division.
Integer division of course returns the tr...
How to get Enum Value from index in Java?
...er loop of performance sensitive code you might want to make a static copy and use that.
– Christopher Barber
Oct 4 '13 at 0:11
1
...
Get program execution time in the shell
...nt to execute something in a linux shell under a few different conditions, and be able to output the execution time of each execution.
...
How is attr_accessible used in Rails 4?
...ctice, though, this moves Rails away from fat model, thin controller, etc, and towards thin models, and really bloated controllers. You have to write all this stuff for every instance, it doesn't read nicely, and nesting seems to be a pain. The old attr_accessible/attr_accessor in the model system...
How to redirect 'print' output to a file using python?
...ee it initialized.
My first guess is that glob doesn't find any bamfiles, and therefore the for loop doesn't run. Check that the folder exists, and print out bamfiles in your script.
Also, use os.path.join and os.path.basename to manipulate paths and filenames.
...