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Rails ActiveRecord date between
...
Wouldn't this create a huge range object?
– Kasper Grubbe
Oct 14 '13 at 10:12
3
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Iterating over all the keys of a map
...
https://play.golang.org/p/JGZ7mN0-U-
for k, v := range m {
fmt.Printf("key[%s] value[%s]\n", k, v)
}
or
for k := range m {
fmt.Printf("key[%s] value[%s]\n", k, m[k])
}
Go language specs for for statements specifies that the first value is the key, the second v...
ON_COMMAND_EX、ON_COMMAND区别 - C/C++ - 清泛网 - 专注C/C++及内核技术
...（返回BOOL类型）。
回顾4.4.2章节，范围映射宏ON_COMMAND_RANGE的消息处理函数也有一个这样的参数，该参数在两处的含义是一样的，
即：
命令消息扩展映射宏ON_COMMAND_EX定义的消息处理函数解释该参数是当前要处理的命令消息ID...
VBA 行剪切到其他Sheet - 更多技术 - 清泛网 - 专注C/C++及内核技术
VBA 行剪切到其他SheetVBA 行剪切代码：Worksheets("S1") Range("A" & 1) EntireRow Copy Worksheets("S2") Range("A" & 1)Worksheets("S1") Range("A" & VBA 行剪切代码：
Worksheets("S1").Range("A" & 1).EntireRow.Copy Worksheets("S2").Range("A" & 1)
Worksheets("S1").Range("A" & 1).Enti...
What is “runtime”?
...rain product of idea of Virtual Machines. A virtual machine implements the raw interface between hardware and what a program may need to execute. The runtime environment adopts these interfaces and presents them for the use of the programmer. A compiler developer would need these facilities to provi...
How to create the most compact mapping n → isprime(n) up to a limit N?
...ithm that produces a data structure with lowest memory consumption for the range (1, N], where N is a constant.
Just an example of what I am looking for: I could represent every odd number with one bit e.g. for the given range of numbers (1, 10], starts at 3: 1110
...
Get the first item from an iterable that matches a condition
...rst( (1,2,3), condition=lambda x: x % 2 == 0)
2
>>> first(range(3, 100))
3
>>> first( () )
Traceback (most recent call last):
...
StopIteration
"""
return next(x for x in iterable if condition(x))
Version with default argument
@zorf suggested...
Accessing items in an collections.OrderedDict by index
... from indexed import IndexedOrderedDict
In [3]: id=IndexedOrderedDict(zip(arange(1000),random.random(1000)))
In [4]: timeit id.keys()[56]
1000000 loops, best of 3: 969 ns per loop
In [8]: from collections import OrderedDict
In [9]: od=OrderedDict(zip(arange(1000),random.random(1000)))
In [10]: time...
How should one go about choosing a default TCP/IP port for a new service?
...rare) port conflicts? Perhaps it is safer to use a port in the registered range that is unassigned or assigned to an obscure app.
– Kevin Wong
Sep 25 '08 at 15:21
4
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How to generate a random number between a and b in Ruby?
...
UPDATE: Ruby 1.9.3 Kernel#rand also accepts ranges
rand(a..b)
http://www.rubyinside.com/ruby-1-9-3-introduction-and-changes-5428.html
Converting to array may be too expensive, and it's unnecessary.
(a..b).to_a.sample
Or
[*a..b].sample
Array#sample
Stan...