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How can I read a whole file into a string variable
...buf := bytes.NewBuffer(nil)
for _, filename := range filenames {
f, _ := os.Open(filename) // Error handling elided for brevity.
io.Copy(buf, f) // Error handling elided for brevity.
f.Close()
}
s := string(buf.Bytes())
This opens each file, copies its contents into buf, then close...
Difference between binary semaphore and mutex
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They are NOT the same thing. They are used for different purposes!
While both types of semaphores have a full/empty state and use the same API, their usage is very different.
Mutual Exclusion Semaphores
Mutual Exclusion semaphores are used to protect shared resources (data structure...
Android Left to Right slide animation
I have three activities whose launch modes are single instance.
Using onfling() , I swing them left and right.
9 Answer...
Is gettimeofday() guaranteed to be of microsecond resolution?
...that was originally written for the Win32 API, to Linux (well, porting the OS X port of the Win32 port to Linux).
10 Answer...
Convert UTC datetime string to local datetime
...g issues in DelboyJay's example. And the lesser timing issues in Erik van Oosten's amendment.
As an interesting footnote, the timezone offset computed above can differ from the following seemingly equivalent expression, probably due to daylight savings rule changes:
offset = datetime.fromtimestamp...
Python Process Pool non-daemonic?
Would it be possible to create a python Pool that is non-daemonic? I want a pool to be able to call a function that has another pool inside.
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Get an OutputStream into a String
...ld use a ByteArrayOutputStream. And on finish you can call:
new String( baos.toByteArray(), codepage );
or better:
baos.toString( codepage );
For the String constructor, the codepage can be a String or an instance of java.nio.charset.Charset. A possible value is java.nio.charset.StandardCharse...
Random string generation with upper case letters and digits
...m.sample creates samples without replacement, in other words, without the possibility to repeat characters, which isn't in the OP's requirements. I don't think that would be desirable for most applications.
– ontologist
Aug 12 '14 at 3:18
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Combine --user with --prefix error with setup.py install
...ling multiple packages:
Create ~/.pydistutils.cfg (or equivalent for your OS/platform) with the following contents:
[install]
prefix=
Note that there is no text (not even whitespace) after the =.
Then run the necessary pip install --user or python setup.py install --user commands. Do not forget...
seek() function?
...
where fp is the file pointer you're working with; offset means how many positions you will move; from_what defines your point of reference:
0: means your reference point is the beginning of the file
1: means your reference point is the current file position
2: means your reference point is the e...