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Excel RTD(Excel Real-Time Data)实时刷新数据技术 - C/C++ - 清泛网 - 专注C/C++及内核技术
... Data FAQ上有其性能描述（http://msdn.microsoft.com/en-us/library/aa140060(v=office.10).aspx#odc_xlrtdfaq_whatisrtd），据说在一台配置为 Pentium III 500 MHz 的CPU和 128 MB 内存的电脑上，RTD可以在一秒内对20000个独立的主题（topic）更新三次，对于单独一...
What's the difference between JavaScript and JScript?
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12 Answers
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Regex to get string between curly braces
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14 Answers
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Performance difference for control structures 'for' and 'foreach' in C#
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130
Well, it partly depends on the exact type of list. It will also depend on the exact CLR you're...
What does the WPF star do (Width=“100*”)
...r Height="*" means proportional sizing.
For example: to give 30% to column 1 and 70% to column 2 -
<ColumnDefinition Width="3*" />
<ColumnDefinition Width="7*" />
And likewise for rows -
<RowDefinition Height="3*" />
<RowDefinition Height="7*" />
The numbers do not ha...
How to keep index when using pandas merge
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169
In [5]: a.reset_index().merge(b, how="left").set_index('index')
Out[5]:
col1 to_merge_...
How to use RSpec's should_raise with any kind of exception?
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expect { some_method }.to raise_error
RSpec 1 Syntax:
lambda { some_method }.should raise_error
See the documentation (for RSpec 1 syntax) and RSpec 2 documentation for more.
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How do I use valgrind to find memory leaks?
...\
--log-file=valgrind-out.txt \
./executable exampleParam1
The flags are, in short:
--leak-check=full: "each individual leak will be shown in detail"
--show-leak-kinds=all: Show all of "definite, indirect, possible, reachable" leak kinds in the "full" report.
--track-origins=ye...
C# equivalent to Java's charAt()?
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You can index into a string in C# like an array, and you get the character at that index.
Examp...