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Redis strings vs Redis hashes to represent JSON: efficiency?
...s://127.0.0.1:6379/0>
> redis.flushdb
=> "OK"
> ap redis.info(:memory)
{
"used_memory" => "529512",
**"used_memory_human" => "517.10K"**,
....
}
=> nil
# me_set( 't:i' ... ) same as hset( 't:i/512', i % 512 ... )
# txt...
Python try…except comma vs 'as' in except
...
If you want to support all python versions you can use the sys.exc_info() function like this:
try:
a = 1/'0'
except (ZeroDivisionError, TypeError):
e = sys.exc_info()[1]
print(e.args[0])
(source:http://python3porting.com/noconv.html)
...
grep a file, but show several surrounding lines?
...but it can also function as a simple switch / flag (-g to enable debugging info in GCC). However spaces between options are optional, so for options without a value, it is possible to merge them (-ABC), which means that -15 is interpreted -1 -5 (two separate options) and the -5 overrides the -1.
...
How to activate an Anaconda environment
...appears in the tutorials for Mac and Linux:
$ source activate py33
More info:
https://groups.google.com/a/continuum.io/forum/#!topic/anaconda/8T8i11gO39U
Does `anaconda` create a separate PYTHONPATH variable for each new environment?
...
POST request via RestTemplate in JSON
...ders here
String requestJson = "{ // Construct your JSON here }";
logger.info("Request JSON ="+requestJson);
HttpEntity<String> entity = new HttpEntity<String>(requestJson, headers);
ResponseEntity<String> response = restTemplate.exchange(url, HttpMethod.POST, entity, String.clas...
How do I escape reserved words used as column names? MySQL/Create Table
...ouble quotes if ANSI SQL mode is enabled
CREATE TABLE IF NOT EXISTS misc_info
(
id INTEGER PRIMARY KEY AUTO_INCREMENT NOT NULL,
"key" TEXT UNIQUE NOT NULL,
value TEXT NOT NULL
)
ENGINE=INNODB;
or the proprietary back tick escaping otherwise. (Where to find the ` character ...
Foreach loop, determine which is the last iteration of the loop
... this:
var elements = new[] { "A", "B", "C" };
elements.ForEach((element, info) => {
if (!info.IsLast) {
Console.WriteLine(element);
} else {
Console.WriteLine("Last one: " + element);
}
});
The extension method looks like this (as an added bonus, it will also tell ...
jQuery: Return data after ajax call success [duplicate]
...the ES6 Promises without the polyfill, see: Can I use: Promises.
For more info see:
http://bugs.jquery.com/ticket/14510
https://github.com/jquery/jquery/issues/1722
https://gist.github.com/domenic/3889970
http://promises-aplus.github.io/promises-spec/
http://www.html5rocks.com/en/tutorials/es6/pr...
How do I read an attribute on a class at runtime?
... This extension method could be further generalized by extending MemberInfo, a base class of Type and all - or at least most - of a Type's members. Doing so would open this up to allow reading attributes from Properties, Fields, and even Events.
– M.Babcock
...
How to properly create an SVN tag from trunk?
...e of svn revision somehow
(e.g. incorporates the number obtained with 'svn info' into the version of
the product you build), then you won't be able to build exactly the same product
from a tag (the result will have the revision of the tag instead of that of the
original code).
It looks like by desi...