大约有 11,500 项符合查询结果（耗时：0.0188秒） [XML]
Django: How to manage development and production settings?
I have been developing a basic app. Now at the deployment stage it has become clear I have need for both a local settings and production settings.
...
Grepping a huge file (80GB) any way to speed it up?
This has been running for an hour on a fairly powerful linux server which is otherwise not overloaded.
Any alternative to grep? Anything about my syntax that can be improved, (egrep,fgrep better?)
...
How can I cast int to enum?
How can an int be cast to an enum in C#?
31 Answers
31
...
Why does int i = 1024 * 1024 * 1024 * 1024 compile without error?
...
There's nothing wrong with that statement; you're just multiplying 4 numbers and assigning it to an int, there just happens to be an overflow. This is different than assigning a single literal, which would be bounds-checked at compile-time.
It is the out-of-bounds literal that causes the error, ...
How do you get the list of targets in a makefile?
I've used rake a bit (a Ruby make program), and it has an option to get a list of all the available targets, eg
20 Answers
...
Why must a nonlinear activation function be used in a backpropagation neural network? [closed]
I've been reading some things on neural networks and I understand the general principle of a single layer neural network. I understand the need for aditional layers, but why are nonlinear activation functions used?
...
Fast way of finding lines in one file that are not in another?
...
You can achieve this by controlling the formatting of the old/new/unchanged lines in GNU diff output:
diff --new-line-format="" --unchanged-line-format="" file1 file2
The input files should be sorted for this to work. With bash (and zsh) you ...
How to set RelativeLayout layout params in code not in xml?
For example I want to add 3 buttons on screen: one align left, one align center, last one align right.
5 Answers
...
How to subtract a day from a date?
I have a Python datetime.datetime object. What is the best way to subtract one day?
6 Answers
...
Operator overloading : member function vs. non-member function?
I read that an overloaded operator declared as member function is asymmetric because it can have only one parameter and the other parameter passed automatically is the this pointer. So no standard exists to compare them. On the other hand, overloaded operator declared as a friend is symmetric...