大约有 48,000 项符合查询结果（耗时：0.0798秒） [XML]
sort object properties and JSON.stringify
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edited Sep 6 '18 at 10:53
answered Mar 5 '16 at 6:33
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MySQL root access from all hosts
...not the perfect solution. It may work. For me it produced an error: ERROR 1062 (23000): Duplicate entry '%-root' for key 'PRIMARY'
– Scriptlabs
Nov 16 '15 at 12:51
2
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Java Timer vs ExecutorService?
... is crappy.
– JohnyTex
Oct 6 '17 at 10:17
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How do I create test and train samples from one dataframe with pandas?
... would just use numpy's randn:
In [11]: df = pd.DataFrame(np.random.randn(100, 2))
In [12]: msk = np.random.rand(len(df)) < 0.8
In [13]: train = df[msk]
In [14]: test = df[~msk]
And just to see this has worked:
In [15]: len(test)
Out[15]: 21
In [16]: len(train)
Out[16]: 79
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Creating a dynamic choice field
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answered Aug 6 '10 at 2:17
AshokAshok
9,64522 gold badges3131 silver badges2323 bronze badges
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Cordova: start specific iOS emulator image
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10 Answers
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How I can I lazily read multiple JSON values from a file/stream in Python?
...huge speedup
– OddNorg
Dec 6 '17 at 10:44
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Scrolling child div scrolls the window, how do I stop that?
...gh.
– Gautam Krishnan
Nov 26 '15 at 10:16
5
not a solution. setting the overflow to hidden hides...
Using PHP with Socket.io
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100
It may be a little late for this question to be answered, but here is what I found.
I don't w...
Constant pointer vs Pointer to constant [duplicate]
...self but the object pointed to by ptr shall not be modified.
const int a = 10;
const int* ptr = &a;
*ptr = 5; // wrong
ptr++; // right
While
int * const ptr;
declares ptr a const pointer to int type. You are not allowed to modify ptr but the object pointed to by ptr can be modified.
i...