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Precision String Format Specifier In Swift
... The integer number 4 formatted with "03" looks like 004
let someDouble = 3.14159265359, someDoubleFormat = ".3"
println("The floating point number \(someDouble) formatted with \"\(someDoubleFormat)\" looks like \(someDouble.format(someDoubleFormat))")
// The floating point number 3.14159265359 for...
apc vs eaccelerator vs xcache
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APC
http://pecl.php.net/package/apc
dev dev 2013-09-12
3.1.14 beta 2013-01-02
3.1.9 stable 2011-05-14
Xcache
http://xcache.lighttpd.net/
dev/3.2 dev 2013-12-13
dev/3.1 dev 2013-11-05
3.1.0 stable 2013-10-10
3.0.4 st...
Empty set literal?
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Just to extend the accepted answer:
From version 2.7 and 3.1 python has got set literal {} in form of usage {1,2,3}, but {} itself still used for empty dict.
Python 2.7 (first line is invalid in Python <2.7)
>>> {1,2,3}.__class__
<type 'set'>
>>> {}.__c...
Is there a JSON equivalent of XQuery/XPath?
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(6 years on) Saxon will run XQuery 3.1, which queries JSON. My Saxon experience is using the jar file run by java. There is a node module named saxon-java but I am not sure how that works w/json. And there is another new thing from Saxonica called Saxon-JS.
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Autoreload of modules in IPython [duplicate]
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For IPython version 3.1, 4.x, and 5.x
%load_ext autoreload
%autoreload 2
Then your module will be auto-reloaded by default. This is the doc:
File: ...my/python/path/lib/python2.7/site-packages/IPython/extensions/autoreload.py
Docstrin...
How can I match on an attribute that contains a certain string?
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Note also, in XPath 3.1 this can be simplified to //*[tokenize(@class)=$classname]
– Michael Kay
Apr 18 '18 at 7:42
1
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Spring MVC: How to return image in @ResponseBody?
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if you are using Spring version of 3.1 or newer you can specify "produces" in @RequestMapping annotation. Example below works for me out of box. No need of register converter or anything else if you have web mvc enabled (@EnableWebMvc).
@ResponseBody
@Request...
Parsing query strings on Android
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If you're using Spring 3.1 or greater (yikes, was hoping that support went back further), you can use the UriComponents and UriComponentsBuilder:
UriComponents components = UriComponentsBuilder.fromUri(uri).build();
List<String> myParam = co...
Adding a column to an existing table in a Rails migration
...n to it and then call
rake db:migrate
This will work if you have rails 3.1 onwards installed in your system.
Much simpler way of doing it is change let the change in migration file be as it is.
use
$rake db:migrate:redo
This will roll back the last migration and migrate it again.
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PHP “php://input” vs $_POST
...old HTML form, the request looks something like this:
POST /page.php HTTP/1.1
key1=value1&key2=value2&key3=value3
But if you are working with Ajax a lot, this probaby also includes exchanging more complex data with types (string, int, bool) and structures (arrays, objects), so in most ca...