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How to list all the available keyspaces in Cassandra?
... in current keyspace
cqlsh:system> DESCRIBE TABLES;
available_ranges peers paxos
range_xfers batches compaction_history batchlog
local "IndexInfo" sstable_activity
size_estimates hints views_builds_in_progress p...
Exif manipulation library for python [closed]
...reading and writing metadata to many image types (JPEG, PNG, TIFF and many raw formats), understands standard (Xmp, IPTC and Exif) and non-standard metadata ("Makernotes"), and runs on multiple platforms (Windows, Linux, and, with some work, Mac).
Python bindings to exiv2 are:
gexiv2 (a multi-lan...
Python speed testing - Time Difference - milliseconds
...clock units"
>>> start = time.time(); sum([each**8.3 for each in range(1,100000)]) ; print (time.time() - start)
3.4001404476250935e+45
0.0637760162354
>>> start = time.clock(); sum([each**8.3 for each in range(1,100000)]) ; print (time.clock() - start)
3.4001404476250935e+45
0.05...
How to use pip with Python 3.x alongside Python 2.x
... specify the version every time you use pip:
Install pip:
$ curl https://raw.github.com/pypa/pip/master/contrib/get-pip.py | python3
and export the path:
$ export PATH=/Library/Frameworks/Python.framework/Versions/<version number>/bin:$PATH
...
How do DATETIME values work in SQLite?
...mat
Real number
High precision regarding fraction seconds
Longest time range
Integer number
Lowest storage space
Quick operations
Small time range
Possible year 2038 problem
If you need to compare different types or export to an external application, you're free to use SQLite's own datetim...
Split a string by spaces — preserving quoted substrings — in Python
...
You should use raw strings when using regular expressions.
– asmeurer
Dec 19 '13 at 2:29
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Simple way to encode a string according to a password?
...port base64
def encode(key, string):
encoded_chars = []
for i in xrange(len(string)):
key_c = key[i % len(key)]
encoded_c = chr(ord(string[i]) + ord(key_c) % 256)
encoded_chars.append(encoded_c)
encoded_string = "".join(encoded_chars)
return base64.urlsafe_b6...
How can I find the number of days between two Date objects in Ruby?
...
How about this?
(beginDate...endDate).count
The Range is a set of unique serials.
And ... is an exclusive Range literal.
So beginDate..(endDate - 1) is same. Except is not.
In case when beginDate equals endDate, first element will be excluded because of uniqueness and .....
Storing SHA1 hash values in MySQL
...s the best choice :)
If you want to adopt this method, remember to leave $raw_output = false.
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How do you see recent SVN log entries?
...ption. The following are some practical examples using this option to show ranges of revisions:
To list everything in ascending order:
svn log -r 1:HEAD
To list everything in descending order:
svn log -r HEAD:1
To list everything from the thirteenth to the base of the currently checked-out re...