大约有 6,886 项符合查询结果（耗时：0.0262秒） [XML]
How to create a sequence of integers in C#?
...
Linq projection with the rarely used indexer overload (i):
(new int[11]).Select((o,i) => i)
I prefer this method for its flexibilty.
For example, if I want evens:
(new int[11]).Select((item,i) => i*2)
Or if I want 5 minute increments of an hour:
(n...
How to check if a value exists in an array in Ruby
...lement)
array.to_set.include?(element)
array.to_set.member?(element)
array.index(element) > 0
array.find_index(element) > 0
array.index { |each| each == element } > 0
array.find_index { |each| each == element } > 0
array.any? { |each| each == element }
array.find { |each| each == element...
Python: Get the first character of the first string in a list?
...rap your head around the two conflicting worlds of Python's "list slicing, indexing, subsetting" and then Numpy's "masking, slicing, subsetting, indexing, then numpy's enhanced fancy indexing".
These two videos cleared things up for me:
"Losing your Loops, Fast Numerical Computing with NumPy" by P...
How to get nth jQuery element
...t) function:
$("td").eq(2).css("color", "red");
Also, remember that the indexes are zero-based.
share
|
improve this answer
|
follow
|
...
What is “with (nolock)” in SQL Server?
...transaction. It also
means that in a simple query that
scans all table/index data SQL Server
may lose the scan position, or you
might end up getting the same row
twice. "
share
|
improve ...
How do I bind to list of checkbox values with AngularJS?
...ame="selectedFruits[]"
value="{{fruitName}}"
ng-checked="selection.indexOf(fruitName) > -1"
ng-click="toggleSelection(fruitName)"
> {{fruitName}}
</label>
And the appropriate controller code would be:
app.controller('SimpleArrayCtrl', ['$scope', function SimpleArrayCtrl(...
LINGO使用指南 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...
LINGO提供了几个函数帮助处理集。
1．@in(set_name,primitive_index_1 [,primitive_index_2,…])
如果元素在指定集中，返回1；否则返回0。
例4.7 全集为I，B是I的一个子集，C是B的补集。
sets:
I/x1..x4/;
B(I)/x2/;
C(I)|#not#@in(B,&1):;
endsets
2...
Omitting all xsi and xsd namespaces when serializing an object in .NET?
...Prefix(ns);
}
public override void WriteBase64(byte[] buffer, int index, int count)
{
this.writer.WriteBase64(buffer, index, count);
}
public override void WriteCData(string text)
{
this.writer.WriteCData(text);
}
public override void WriteCharEntit...
How to structure a express.js application?
...orm.jade
|~test
| |~controllers
| |-zoo.js
| |~models
| |-zoo.js
|-index.js
I use Exports to return what's relevant. For instance, in the models I do:
module.exports = mongoose.model('PhoneNumber', PhoneNumberSchema);
and then if I need to create a phone number, it's as simple as:
var Phon...
Database sharding vs partitioning
...of a schema and a database server. It may
offer an advantage by reducing index size (and thus search effort)
provided that there is some obvious, robust, implicit way to identify
in which table a particular row will be found, without first needing
to search the index, e.g., the classic examp...