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How to configure Ruby on Rails with no database?
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This is definitely the easiest way to go if you are starting from scratch, although be warned that (at least in Rails 4.0.1) there is a '-' between active and record in that command. So it should read: rails new myApp --skip-active-record
– Nic Benders
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Tricky Google interview question
...00 5000 ...
j on the vertical
what you need to do is 'walk' this matrix, starting at (0,0). You also need to keep track of what your possible next moves are. When you start at (0,0) you only have two options: either (0,1) or (1,0): since the value of (0,1) is smaller, you choose that. then do t...
What are the differences between local branch, local tracking branch, remote branch and remote track
I just started using Git and I got really confused between different branches. Can anyone help me to figure out what the following branch types are?
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内存管理内幕：动态分配的选择、折衷和实现 - C/C++ - 清泛网 - 专注C/C++及内核技术
...程序的全局变量
int has_initialized = 0;
void *managed_memory_start;
void *last_valid_address;
如前所述，被映射的内存的边界（最后一个有效地址）常被称为系统中断点或者 当前中断点。 在很多 UNIX® 系统中，为了指出当前系统中断...
Differences between INDEX, PRIMARY, UNIQUE, FULLTEXT in MySQL?
...mented internally using b-trees (allowing for selecting, sorting or ranges starting from left most column) or hash tables (allowing for selection starting from left most column).
Where the other index types are general-purpose, a FULLTEXT index is specialised, in that it serves a narrow purpose: it'...
Converting a list to a set changes element order
...ion of insertion order, you can use the keys of a Python dictionary, which starting from Python 3.7 is guaranteed to preserve the insertion order:
>>> a = dict.fromkeys([1, 2, 20, 6, 210])
>>> b = dict.fromkeys([6, 20, 1])
>>> dict.fromkeys(x for x in a if x not in b)
{2:...
Show a popup/message box from a Windows batch file
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I didn't have cscript. I used start instead.
– sureshvv
Nov 14 '17 at 10:57
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Find out if string ends with another string in C++
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Note, that starting from c++20 std::string will finally provide starts_with and ends_with. Seems like there is a chance that by c++30 strings in c++ might finally become usable, if you aren't reading this from distant future, you can us...
How to change past commit to include a missed file?
...s is trivial and obvious for you and me. But, for user who is just getting started and probably does not understand anything about git - this fact is not obvious at all.
– mvp
Jan 16 '13 at 22:53
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How do I call some blocking method with a timeout in Java?
... public void run() {
something.blockingMethod();
}
});
thread.start();
thread.join(2000);
if (thread.isAlive()) {
thread.stop();
}
Note, that stop is deprecated, better alternative is to set some volatile boolean flag, inside blockingMethod() check it and exit, like this:
import ...