大约有 47,000 项符合查询结果（耗时：0.1486秒） [XML]
How can I use numpy.correlate to do autocorrelation?
...nction, is to itself at a certain time difference. At a time difference of 0, the auto-correlation should be the highest because the signal is identical to itself, so you expected that the first element in the autocorrelation result array would be the greatest. However, the correlation is not starti...
Vim Configure Line Number Coloring
...erminal to grey. If you are using gVim, you can:
:highlight LineNr guifg=#050505
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Get week of year in JavaScript like in PHP
...uk/js-date6.htm#YWD. Please test thoroughly, no guarantee provided.
Edit 2017
There was an issue with dates during the period that daylight saving was observed and years where 1 Jan was Friday. Fixed by using all UTC methods. The following returns identical results to Moment.js.
/* For a give...
How can I scale an entire web page with CSS?
...{
zoom: 3;
-moz-transform: scale(3);
-moz-transform-origin: 0 0;
}
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How can we programmatically detect which iOS version is device running on? [duplicate]
I want to check if the user is running the app on iOS less than 5.0 and display a label in the app.
10 Answers
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How to store CGRect values in NSMutableArray?
...eArray mutableArray];
[array addObject:[NSValue valueWithCGRect:CGRectMake(0,0,10,10)]];
CGRect someRect = [[array objectAtIndex:0] CGRectValue];
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RegEx to find two or more consecutive chars
...?
– Alexander Mills
Sep 6 '18 at 21:09
16
Alexander, just to clear few things: {2} means that the...
MySQL: Set user variable from result of query
...-+
| 123456 | 5 |
| 111111 | 5 |
+--------+-------+
2 rows in set (0.00 sec)
Note that for SET, either = or := can be used as the assignment operator. However inside other statements, the assignment operator must be := and not = because = is treated as a comparison operator in non-SET stat...
How to check if an int is a null
...
An int is not null, it may be 0 if not initialized.
If you want an integer to be able to be null, you need to use Integer instead of int.
Integer id;
String name;
public Integer getId() { return id; }
Besides the statement if(person.equals(null)) can...
Why a function checking if a string is empty always returns true? [closed]
...if ($strTemp !== '')
since != '' will return true if you pass is numeric 0 and a few other cases due to PHP's automatic type conversion.
You should not use the built-in empty() function for this; see comments and the PHP type comparison tables.
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