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Floating point vs integer calculations on modern hardware
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35
Alas, I can only give you an "it depends" answer...
From my experience, there are many, many v...
What are the differences between a HashMap and a Hashtable in Java?
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35 Answers
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I need to generate uuid for my rails application. What are the options(gems) I have? [duplicate]
I use
Rails 3.0.20 and
ruby 1.8.7 (2011-06-30 patchlevel 352)
4 Answers
4
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What exactly does the .join() method do?
I'm pretty new to Python and am completely confused by .join() which I have read is the preferred method for concatenating strings.
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Seeking clarification on apparent contradictions regarding weakly typed languages
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edited Jan 20 '13 at 19:03
answered Mar 29 '12 at 16:42
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MySQL复制的概述、安装、故障、技巧、工具 - 数据库(内核) - 清泛网 - 专注...
...Log_Pos：下一个传输的主日志信息。
Relay_Master_Log_File & Exec_Master_Log_Pos：下一个执行的主日志信息。
Relay_Log_File & Relay_Log_Pos：下一个执行的中继日志信息。
理解这些日志信息的含义对于解决故障至关重要，后文会详细阐述。
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Sending a message to nil in Objective-C
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edited Oct 1 '08 at 17:34
answered Oct 1 '08 at 6:32
Mic...
IN clause and placeholders
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edited Feb 15 '13 at 21:06
answered Sep 14 '11 at 15:36
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How to create has_and_belongs_to_many associations in Factory girl
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133
Here is the solution that works for me.
FactoryGirl.define do
factory :company do
#comp...
How to filter rows in pandas by regex
...n [10]: df.b.str.contains('^f')
Out[10]:
0 False
1 True
2 True
3 False
Name: b, dtype: bool
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