大约有 47,000 项符合查询结果（耗时：0.0593秒） [XML]
Email Address Validation in Android on EditText [duplicate]
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675
Java:
public static boolean isValidEmail(CharSequence target) {
return (!TextUtils.isEmpty...
Java recursive Fibonacci sequence
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165
In fibonacci sequence each item is the sum of the previous two. So, you wrote a recursive algori...
Generate array of all letters and digits
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145
[*('a'..'z'), *('0'..'9')] # doesn't work in Ruby 1.8
or
('a'..'z').to_a + ('0'..'9').to_a # ...
Most efficient way to create a zero filled JavaScript array?
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582
ES6 introduces Array.prototype.fill. It can be used like this:
new Array(len).fill(0);
Not ...
What does the constant 0.0039215689 represent?
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0.0039215689 is approximately equal to 1/255.
Seeing that this is OpenGL, performance is probably important. So it's probably safe to guess that this was done for performance reasons.
Multiplying by the reciprocal is faster than re...
What does numpy.random.seed(0) do?
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598
np.random.seed(0) makes the random numbers predictable
>>> numpy.random.seed(0) ; nu...
Specifying rails version to use when creating a new application
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504
I found here an undocumented option to create a new application using an older version of Rail...
How to compare strings ignoring the case
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5 Answers
5
Active
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how to mysqldump remote db from local machine
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250
As I haven't seen it at serverfault yet, and the answer is quite simple:
Change:
ssh -f -L331...