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When should I use Debug.Assert()?
...s for a while in C++ and C, but had no idea they existed in C# and .NET at all until recently.
20 Answers
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How to decorate a class?
...2.5, is there a way to create a decorator that decorates a class? Specifically, I want to use a decorator to add a member to a class and change the constructor to take a value for that member.
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Does “\d” in regex mean a digit?
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@FarazAhmad, probably not, you have to specify all characters separately
– Kirill Polishchuk
Dec 28 '17 at 23:26
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How to count TRUE values in a logical vector
In R, what is the most efficient/idiomatic way to count the number of TRUE values in a logical vector? I can think of two ways:
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C++ SpinLock 自旋锁的代码实现（全网最简略的方式） - C/C++ - 清泛网 - ...
...d_set(memory_order_acquire)) {
if ( (spinCount++) == 0 ) {
#ifdef _WIN32
SwitchToThread();
#else
sched_yield();
#endif
}
}
}
void unlock() { f_.clear(memory_order_release); }
};
3、测试代码如下：
SpinLock lck;
thread thd([&]{
cout << "thread lock..." <...
Python Graph Library [closed]
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I just evaluated both. networkx is installable via pip, whereas igraph is not. This makes igraph harder to use as dependencies in your setup.py files.
– exhuma
Aug 10 '12 at 7:46
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Skip callbacks on Factory Girl and Rspec
...ly achieved this using:
FactoryGirl.define do
factory :user do
first_name "Luiz"
last_name "Branco"
#...
after(:build) { |user| user.class.skip_callback(:create, :after, :run_something) }
factory :user_with_run_something do
after(:create) { |user| user.send(:run_someth...
Does python have an equivalent to Java Class.forName()?
...takes a fully qualified class name and returns the class, however you have all the pieces needed to build that, and you can connect them together.
One bit of advice though: don't try to program in Java style when you're in python.
If you can explain what is it that you're trying to do, maybe we ca...
What does 'COLLATE SQL_Latin1_General_CP1_CI_AS' do?
...parts:
latin1 makes the server treat strings using charset latin 1, basically ascii
CP1 stands for Code Page 1252
CI case insensitive comparisons so 'ABC' would equal 'abc'
AS accent sensitive, so 'ü' does not equal 'u'
P.S. For more detailed information be sure to read @solomon-rutzky's answer...
Postgres dump of only parts of tables for a dev snapshot
...and testing, we need to create snapshots of this database that are functionally equivalent, but which are only 10 or 20 gigs in size.
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