大约有 44,000 项符合查询结果(耗时:0.0403秒) [XML]
Invalid default value for 'create_date' timestamp field
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I like the use of column_name TIMESTAMP DEFAULT NOW(). May not be appropriate for every situation but thought I'd share since I was dealing with this too.
– DeezCashews
Aug 1 '18 at 15:20
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Pass complex parameters to [Theory]
... Any ideas what happened with ClassData? I canõt find it in xUnit2.0, for now, I am using MemberData with static method, which creates new instance of class, and returns that.
– Erti-Chris Eelmaa
May 16 '15 at 23:43
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Functions that return a function
... to the function, which can be assigned as you've done with var s = a(). s now contains a reference to the function b(), and calling s() is functionally equivalent to calling b().
// Return a reference to the function b().
// In your example, the reference is assigned to var s
return b;
Calling t...
pandas dataframe columns scaling with sklearn
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I am not sure if previous versions of pandas prevented this but now the following snippet works perfectly for me and produces exactly what you want without having to use apply
>>> import pandas as pd
>>> from sklearn.preprocessing import MinMaxScaler
>>> scal...
Best JavaScript compressor [closed]
...tter than YUI on all scripts I tested it on, and it's safer than Closure (knows to deal with "eval" or "with").
Other than whitespace removal, UglifyJS also does the following:
changes local variable names (usually to single characters)
joins consecutive var declarations
avoids inserting any unne...
Tab Vs Space preferences in Vim
...tab(X), where X is the desired tab width. This is an adequate solution for now, but if anyone can suggest a way of making it easier to call I would be grateful.
I've also created a function that quickly summarizes the current settings, which I have mapped to ctrl-Tab:
nmap <C-Tab> :call TabP...
Ruby, remove last N characters from a string?
...in a fast and readable manner.
The docs on the methods are here.
If you know what the suffix is, this is idiomatic (and I'd argue, even more readable than other answers here):
'abc123'.delete_suffix('123') # => "abc"
'abc123'.delete_suffix!('123') # => "abc"
It's even significantly...
Cast Double to Integer in Java
...r val = (myDouble == null)? null : Integer.valueOf(myDouble.intValue());
Now it works fine for most values. However integers have a very small range (min/max value) compared to a Double. On top of that, doubles can also hold "special values", that integers cannot:
1/0 = +infinity
-1/0 = -infini...
How to dismiss keyboard for UITextView with return key?
...e reason to use UITextView is that it can hold text in multiple lines. And now I'm using it as a message box.
– Chilly Zhong
Apr 1 '09 at 6:12
28
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How do I set the time zone of MySQL?
... this answer.
To get the current timezone offset as TIME
SELECT TIMEDIFF(NOW(), UTC_TIMESTAMP);
It will return 02:00:00 if your timezone is +2:00.
To get the current UNIX timestamp:
SELECT UNIX_TIMESTAMP();
SELECT UNIX_TIMESTAMP(NOW());
To get the timestamp column as a UNIX timestamp
SELECT...
