大约有 46,000 项符合查询结果（耗时：0.0378秒） [XML]
Best practice? - Array/Dictionary as a Core Data Entity Attribute [closed]
...n be handled by Core Data.
Update
As of OS X 10.7, Core Data includes an ordered set type which can be used in place of an array. If you can target 10.7 or later, this is the best solution for ordered (array-like) collections.
...
What Computer Science concepts should I know? [closed]
...s, but find wikipedia too academic :D
Anyway, here goes, in no particular order:
The relational model: Introduction to Database systems
Object orientation : Object Thinking
Complexity and computation theory (think Turing machines and automata): Introduction to theory of computation
A little compi...
How can I sort a dictionary by key?
...
Standard Python dictionaries are unordered. Even if you sorted the (key,value) pairs, you wouldn't be able to store them in a dict in a way that would preserve the ordering.
The easiest way is to use OrderedDict, which remembers the order in which the element...
No mapping found for field in order to sort on in ElasticSearch
...xplicitly set to true in the sort clause.
"sort" : [
{ "rating": {"order" : "desc" , "ignore_unmapped" : true} },
{ "price": {"order" : "asc" , "missing" : "_last" , "ignore_unmapped" : true} }
]
For further information have a look at the Elasticsearch references for:
missing valu...
How do I simulate a low bandwidth, high latency environment?
I need to simulate a low bandwidth, high latency connection to a server in order to emulate the conditions of a VPN at a remote site. The bandwidth and latency should be tweakable so I can discover the best combination in order to run our software package.
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Disable sorting for a particular column in jQuery DataTables
...les example - HTML5 data-* attributes - table options
So you can use data-orderable="false" on the th of the column you don't want to be sortable. For example, the second column "Avatar" in the table below will not be sortable:
<table id="example" class="display" width="100%" data-page-length="...
Sorting arrays in NumPy by column
... actually the most elegant way of doing it.
For the "correct" way see the order keyword argument of numpy.ndarray.sort
However, you'll need to view your array as an array with fields (a structured array).
The "correct" way is quite ugly if you didn't initially define your array with fields...
A...
Best dynamic JavaScript/JQuery Grid [closed]
...valuating DataTables, but adding rows (and having them be part of the sort order) is not working well.
– MattW
Jan 12 '12 at 14:50
...
Placing/Overlapping(z-index) a view above another view in android
...you can use a FrameLayout. In a FrameLayout, the z-index is defined by the order in which the items are added, for example:
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
>
&l...
What does it mean by buffer?
... not specific to IT or CS. It's a place to store something temporarily, in order to mitigate differences between input speed and output speed. While the producer is being faster than the consumer, the producer can continue to store output in the buffer. When the consumer speeds up, it can read from ...