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What are the Ruby File.open modes and options?
...ing
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"r" | Read-only, starts at beginning of file (default mode).
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"r+" | Read-write, starts at beginning of file.
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android pick images from gallery
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Please don't forget to add runtime permissions for READ_EXTERNAL_STORAGE and WRITE_EXTERNAL_STORAGE for api level 23 and higher. Otherwise you may not get bitmap from gallery as not null. See stackoverflow.com/a/35285667/3341089
– oguzhan
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Is file append atomic in UNIX?
...2) after every write, but that's terrible for performance.
Clarification: read the comments and Oz Solomon's answer. I'm not sure that O_APPEND is supposed to have that PIPE_BUF size atomicity. It's entirely possible that it's just how Linux implemented write(), or it may be due to the underlying f...
How to convert CSV file to multiline JSON?
...le.json', 'w')
fieldnames = ("FirstName","LastName","IDNumber","Message")
reader = csv.DictReader( csvfile, fieldnames)
for row in reader:
json.dump(row, jsonfile)
jsonfile.write('\n')
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What is the quickest way to HTTP GET in Python?
...ib.request
contents = urllib.request.urlopen("http://example.com/foo/bar").read()
Python 2:
import urllib2
contents = urllib2.urlopen("http://example.com/foo/bar").read()
Documentation for urllib.request and read.
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Linux: is there a read or recv from socket with timeout?
How can I try to read data from socket with timeout?
I know, select, pselect, poll, has a timeout field, but using of them disables "tcp fast-path" in tcp reno stack.
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Handling JSON Post Request in Go
... single object. It is not more efficient for a single JSON object since it reads the entire object into memory. It has a downside that if garbage is included after the object it will not complain. Depending on a few factors, json.Decoder may not fully read the body and the connection will be ineligi...
How do I read all classes from a Java package in the classpath?
I need to read classes contained in a Java package. Those classes are in classpath. I need to do this task from a Java program directly. Do you know a simple way to do?
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Python progression path - From apprentice to guru
...corators
Write recursive functions, a lot
Discover itertools and functools
Read Real World Haskell (read free online)
Rewrite all your old Python code with tons of higher order functions, recursion, and whatnot.
Annoy your cubicle mates every time they present you with a Python class. Claim it coul...
Combine Date and Time columns using python pandas
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It's worth mentioning that you may have been able to read this in directly e.g. if you were using read_csv using parse_dates=[['Date', 'Time']].
Assuming these are just strings you could simply add them together (with a space), allowing you to apply to_datetime:
In [11]: df['...