大约有 62 项符合查询结果（耗时：0.0153秒） [XML]
How can I find the number of days between two Date objects in Ruby?
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2.0.0-p195 :022 > a_date_time - c_date_time
=> (20/1)
2.0.0-p195 :023 > (a_date_time - c_date_time).to_i
=> 20
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CoInitialize浅析一 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...g) 调用wCoInitializeEx
769AF021 mov ecx, esi
769AF023 mov edi, eax
769AF025 call ?Release@COleStaticMutexSem@@QAEXXZ ;COleStaticMutexSem::Release(void)
769AF02A test edi, edi
769AF02C jl loc_76...
Removing a list of characters in string
...rs_re_unicode
1.373 remove_chars_translate_unicode
---
3.4.2 (v3.4.2:ab2c023a9432, Oct 5 2014, 20:42:22)
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)]
"plain" string:
0.512 remove_chars_iter
0.574 remove_chars_re
0.765 remove_chars_translate_unicode
unicode string:
0.817 remove_chars_iter
0.68...
Ruby: Calling class method from instance
...7f348>
ruby-1.9.3-p0 :022 > b.make1
=> "bigmac"
ruby-1.9.3-p0 :023 > b.make2
=> "mac"
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How to round a number to significant figures in Python
...return round(x, -int(floor(log10(abs(x)))))
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>>> round_to_1(0.0232)
0.02
>>> round_to_1(1234243)
1000000.0
>>> round_to_1(13)
10.0
>>> round_to_1(4)
4.0
>>> round_to_1(19)
20.0
You'll probably have to take care of turning float to integer if it's bi...
Append value to empty vector in R?
...vector[i] <- values[i] )
# user system elapsed
# 0.024 0.000 0.023
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Does Ruby regular expression have a not match operator like “!~” in Perl?
...' =~ /^abc/
=> 0
2.1.5 :022 > 'def1234' =~ /^abc/
=> nil
2.1.5 :023 > 'abc1234' =~ /^(?!abc)/
=> nil
2.1.5 :024 > 'def1234' =~ /^(?!abc)/
=> 0
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Multiple linear regression in Python
... -0.365 0.241
const 1.5704 0.633 2.481 0.023 0.245 2.895
==============================================================================
Omnibus: 6.904 Durbin-Watson: 1.905
Prob(Omnibus): 0.032 ...
Why is “copy and paste” of code dangerous? [closed]
...s the one I want to use as my source?"
"Hmmm, what do all these 'util_func_023' functions do? Didn't I document them? Which of them do I need now?"
"Oh, yeah, this code uses Code Base Y. Guess I need to [choose one: copy all of Code Base Y into my new project / spend a day extricating the one functi...
Function vs. Stored Procedure in SQL Server
...numbers of input parameters than stored procedures. UDFs can have up to 1,023 input parameters.
Temporary tables cannot be used in user-defined functions.
User-defined functions cannot execute Dynamic SQL.
User-defined functions do not support error handling. RAISEERROR OR @@ERROR are not allowed...