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Read and overwrite a file in Python
... race conditions, you could truncate it:
f = open(filename, 'r+')
text = f.read()
text = re.sub('foobar', 'bar', text)
f.seek(0)
f.write(text)
f.truncate()
f.close()
The functionality will likely also be cleaner and safer using open as a context manager, which will close the file handler, even if a...
How do cache lines work?
...gs in about 64 bytes at a time, whatever the size of the actual data being read.
5 Answers
...
How to copy files from 'assets' folder to sdcard?
... of them to a folder say /sdcard/folder. I want to do this from within a thread. How do I do it?
22 Answers
...
Difference between
...ber> foo3 = new ArrayList<Double>(); // Double extends Number
Reading - Given the above possible assignments, what type of object are you guaranteed to read from List foo3:
You can read a Number because any of the lists that could be assigned to foo3 contain a Number or a subclass of ...
How to overload __init__ method based on argument type?
... "Initialize MyData from a file"
... data = open(filename).readlines()
... return cls(data)
...
... @classmethod
... def fromdict(cls, datadict):
... "Initialize MyData from a dict's items"
... return cls(datadict.items())
...
>>> MyData...
How to detect incoming calls, in an Android device?
... do this:
Manifest:
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="android.permission.PROCESS_OUTGOING_CALLS"/>
<!--This part is inside the application-->
<receiver android:name=".CallReceiver" >
<intent...
Read error response body in Java
...putStream() will throw an IO Exception. You should catch the exception and read from error stream using getErrorStream(). This seems to be a better approach than checking on httpresponse code.
– Sudarshan Bhat
Aug 20 '12 at 12:04
...
Pushing read-only GUI properties back into ViewModel
I want to write a ViewModel that always knows the current state of some read-only dependency properties from the View.
6 An...
What is the single most influential book every programmer should read? [closed]
If you could go back in time and tell yourself to read a specific book at the beginning of your career as a developer, which book would it be?
...
How do I download a binary file over HTTP?
...ple.flv')
begin
http.request_get('/sample.flv') do |resp|
resp.read_body do |segment|
f.write(segment)
end
end
ensure
f.close()
end
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