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How do I create a variable number of variables?
... answered Sep 3 '09 at 12:41
c_harmc_harm
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Spring RestTemplate - how to enable full debugging/logging of requests/responses?
...e been using the Spring RestTemplate for a while and I consistently hit a wall when I'am trying to debug it's requests and responses. I'm basically looking to see the same things as I see when I use curl with the "verbose" option turned on. For example :
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What's the difference between JPA and Spring Data JPA?
...ager, and annotations that help you map a Java entity object to a database table.
There are several JPA providers, like HIbernate, EclipseLink, or Open JPA which you can use.
Spring Data JPA
Spring Data JPA is a JPA data access abstraction. Just like JPA, Spring Data JPA cannot work without a JPA...
Generating a UUID in Postgres for Insert statement?
...oint of my comment, though. Your original answer implies that v4 is not suitable for large datasets due to a higher probability of collision than v1. This is misleading and possibly false, though it is hard to calculate the collision probability for v1 because it is so implementation-dependent.
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Get an OutputStream into a String
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I would 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.ch...
How to return a value from __init__ in Python?
I have a class with an __init__ function.
10 Answers
10
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Timeout function if it takes too long to finish [duplicate]
...nal
class TimeoutError(Exception):
pass
def timeout(seconds=10, error_message=os.strerror(errno.ETIME)):
def decorator(func):
def _handle_timeout(signum, frame):
raise TimeoutError(error_message)
def wrapper(*args, **kwargs):
signal.signal(signal.SI...
How to overcome TypeError: unhashable type: 'list'
...used to compare dictionary keys during a dictionary lookup quickly.
Internally, hash() method calls __hash__() method of an object which are set by default for any object.
Converting a nested list to a set
>>> a = [1,2,3,4,[5,6,7],8,9]
>>> set(a)
Traceback (most recent call last...
Convert string to binary in python
...encoding.
In Python 3, then, you can do something like this:
a = "test"
a_bytes = bytes(a, "ascii")
print(' '.join(["{0:b}".format(x) for x in a_bytes]))
The differences between UTF-8 and ascii encoding won't be obvious for simple alphanumeric strings, but will become important if you're process...
Programmatically obtain the Android API level of a device?
... obtain API level programatically by the system constant (Build.VERSION.SDK_INT). For example you can run some piece of code which requires newer API in the following way (it will execute if the current device's API level is at least 4)
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.DONUT) {
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