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Convert a byte array to integer in Java and vice versa
...LeifEricson I believe the & 0xFFs are necessary as it tells the JVM to convert the signed byte into an integer with just those bits set. Otherwise the byte -1 (0xFF) will turn into the int -1 (0xFFFFFFFF). I could be wrong and even if I am it doesn't hurt and makes things clearer.
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How do I cast a string to integer and have 0 in case of error in the cast with PostgreSQL?
...erflow, but it'll mask larger numbers, which might cause trouble if you're converting a table. Personally I'd rather have the query error out up front and know that some of my "integers" are screwy (You can also select with E'\\d{6,}$' first to make sure).
– Anthony Briggs
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How do I convert a String to an int in Java?
How can I convert a String to an int in Java?
46 Answers
46
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What is the quickest way to HTTP GET in Python?
...rfect if you add one line after the print statement in reporthook.
import sys, urllib
def reporthook(a, b, c):
print "% 3.1f%% of %d bytes\r" % (min(100, float(a * b) / c * 100), c),
sys.stdout.flush()
for url in sys.argv[1:]:
i = url.rfind("/")
file = url[i+1:]
print url, "-&g...
Why does “pip install” inside Python raise a SyntaxError?
...erpreter. By opening pip.exe with 7-zip you can see main.py importing pip, sys and re modules... (And there you'll find the answer how to run it within a python shell)--> pip is a regular python module. Don't forget windows wasn't first platform supporting python, linux was, and there python is a...
python NameError: global name '__file__' is not defined
...he "execution path", not the "actual file path":
print(os.getcwd())
print(sys.argv[0])
print(os.path.dirname(os.path.realpath('__file__')))
Source:
http://cx-freeze.readthedocs.org/en/latest/faq.html
Your old line (initial question):
def read(*rnames):
return open(os.path.join(os.path.dirname(_...
Python CSV error: line contains NULL byte
...
Converting the encoding of the source file from UTF-16 to UTF-8 solve my problem.
How to convert a file to utf-8 in Python?
import codecs
BLOCKSIZE = 1048576 # or some other, desired size in bytes
with codecs.open(sourceFil...
How to calculate dp from pixels in android programmatically [duplicate]
...t the OP asked for.
Note that TypedValue.applyDimension cannot be used to convert px->dp, for that you must use the method described here: https://stackoverflow.com/a/17880012/504611 (quoted below for convenience).
Without Context object, elegant static methods:
public static int dpToPx(int...
Convert hex to binary
... This returns "binary" as in the actual bytes, but it does not convert it to a printable representation as "0" and "1".
– Matt Good
Sep 15 '09 at 6:52
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What is __init__.py for?
...y file (with underscores) and datetime.py. Now open an interpreter, import sys, and issue sys.path.insert(0, '/path/to/datetime'), replacing that path with the path to whatever directory you just made. Now try something like from datetime import datetime;datetime.now(). You should get an AttributeEr...