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Elevating process privilege programmatically?
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edited Feb 4 '16 at 9:37
Mojtaba Rezaeian
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an...
How does Go update third-party packages?
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323
go get will install the package in the first directory listed at GOPATH (an environment variab...
Rails 3.1: Engine vs. Mountable App
...tand the differences between a Rails Engine and a Mountable app? In Rails 3.1, you can create either one with the "rails new plugin ___ " command.
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Creating an empty Pandas DataFrame, then filling it?
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350
Here's a couple of suggestions:
Use date_range for the index:
import datetime
import pandas ...
Set value for particular cell in pandas DataFrame using index
...y df.
In [18]: %timeit df.set_value('C', 'x', 10)
100000 loops, best of 3: 2.9 µs per loop
In [20]: %timeit df['x']['C'] = 10
100000 loops, best of 3: 6.31 µs per loop
In [81]: %timeit df.at['C', 'x'] = 10
100000 loops, best of 3: 9.2 µs per loop
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How to programmatically cause a core dump in C/C++
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edited May 23 '17 at 11:54
Community♦
111 silver badge
answered Jun 11 '09 at 3:24
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How to find common elements from multiple vectors?
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3 Answers
3
Active
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Why does git perform fast-forward merges by default?
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edited May 23 '17 at 12:10
Community♦
111 silver badge
answered May 17 '10 at 15:31
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Efficient Algorithm for Bit Reversal (from MSB->LSB to LSB->MSB) in C
...e (just don't look at me when they're not as fast :)
Options
Low Memory (32-bit int, 32-bit machine)(from here):
unsigned int
reverse(register unsigned int x)
{
x = (((x & 0xaaaaaaaa) >> 1) | ((x & 0x55555555) << 1));
x = (((x & 0xcccccccc) >> 2) | ((x & ...
C++静态和多态，亦敌亦友 - C/C++ - 清泛网 - 专注C/C++及内核技术
...，你确定上述代码能通过编译？在笔者Ubuntu 12.04 + gcc 4.6.3的机器上，上述代码编译不能通过。显示如下信息：
stawithvir.cpp:19:17: error: ‘static void DerivedAgain::foo()’ cannot be declared
stawithvir.cpp:13:10: error: since ‘virtual void ...