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Which UUID version to use?
... v3, v4 or v5 UUIDs.
Update:
In a comment, you mention that you are using Python and link to this. Looking through the interface provided, the easiest option for you would be to generate a v4 UUID (that is, one created from random data) by calling uuid.uuid4().
If you have some data that you need...
What's the meaning of “=>” (an arrow formed from equals & greater than) in JavaScript?
...g functions. They are one-liners, similar to Lambda Expressions in Java or Python.
Example with no parameters
const queue = ['Dave', 'Sarah', 'Sharon'];
const nextCustomer = () => queue[0];
console.log(nextCustomer()); // 'Dave'
If multiple statements need to be made within the same Ar...
How to use Elasticsearch with MongoDB?
...eeping up with operations in MongoDB in real-time. It has been tested with Python 2.6, 2.7, and 3.3+. Detailed documentation is available on the wiki.
https://github.com/mongodb-labs/mongo-connector
https://github.com/mongodb-labs/mongo-connector/wiki/Usage%20with%20ElasticSearch
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Send message to specific client with socket.io and node.js
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I am Python/PHP programmer and I am new to sockets and node, question is, why do we need to increment seq number of same user each second? is that just for demo?
– Umair Ayub
Sep 11 '18 at 10...
Is there a reason for C#'s reuse of the variable in a foreach?
...en moment in time (creation of a closure). This discusses similar stuff in Python and Scheme (cut for refs/vars and cute for keeping evaluated values in partially-evaluated closures).
– Will Ness
Jan 18 '12 at 18:09
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Using getopts to process long and short command line options
...ions for you the way that e.g. bash getopts, the Perl Getopt module or the Python optparse/argparse modules do. All that getopt does is canonicalize the options that are passed in — i.e. convert them to a more standard form, so that it's easier for a shell script to process them. For example, an...
Compile time string hashing
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Yes absolutely. I tested it against the Python CRC32 runtime algorithm (coming from zlib) and the results are the same. In fact, what you're trying to achieve is exactly why I use this technique for!
– Clement JACOB
Aug 23 '13...
What is the difference between buffer and cache memory in Linux?
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I have tested this using a simple python program that writes large amounts of blocks. What happens is that the cache gets filled up as reported by free -w -h, not the buffers column. I think the cache column counts both disk writes and disk reads and buffers ...
Print text instead of value from C enum
...or or custom preprocessor in a scripting language. And in fact, I've got a Python script I've used for exactly this purpose in multiple projects. But I don't use it that often nowadays—for many use cases you can get away with just using strings and not bothering with the enums (and even more so in...
Difference between framework vs Library vs IDE vs API vs SDK vs Toolkits? [closed]
...ted in the SDK section of the API documentation, e.g, the twilio API has a python, ruby, C#, and Java sdk for their API. Just to confuse things a little more they call it API Libraries and SDKs, and I've heard both of those terms used interchangeably.
– Rob
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