大约有 31,500 项符合查询结果（耗时：0.0382秒） [XML]
Extract numbers from a string
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$str = 'In My Cart : 11 12 items';
preg_match_all('!\d+!', $str, $matches);
print_r($matches);
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List to array conversion to use ravel() function
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Actually, myarray = np.array(mylist) should be enough.
– fgb
Apr 7 '13 at 22:23
11
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EOL conversion in notepad ++
..., when I open files from a unix server on my windows machine, they occasionally have Macintosh EOL conversion, and when I edit/save them again they don't work properly on the unix server. I only use notepad ++ to edit files from this unix server, so is there a way to create a macro that automatical...
Is int[] a reference type or a value type?
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Arrays are mechanisms that allow you
to treat several items as a single
collection. The Microsoft® .NET Common
Language Runtime (CLR) supports
single-dimensional arrays,
multidimensional arrays, and jagged
arrays (arrays of arrays). All ar...
How can I check MySQL engine type for a specific table?
... database contains several tables using different storage engines
(specifically myisam and innodb). How can I find out which tables are
using which engine?
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What is offsetHeight, clientHeight, scrollHeight?
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To know the difference you have to understand the box model, but basically:
clientHeight:
returns the inner height of an element in pixels, including padding but not the horizontal scrollbar height, border, or margin
offsetHeight:
is a measurement which includes the element borders, ...
How do I access the host machine from the guest machine? [closed]
...is a mac-only thing. When you open up System Preferences / Sharing, it actually shows you the computer name, and below it notes that to access it on the local network you should use computername.local - this applies for connection to file sharing, web sharing, etc
– Johnus
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What is the difference between inversedBy and mappedBy?
... @PeterWooster, best practice is to use Annotations, as you have all info about the entity in one place then!
– Andreas Linden
Jan 22 '13 at 9:57
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Cannot truncate table because it is being referenced by a FOREIGN KEY constraint?
...rrect; you cannot truncate a table which has an FK constraint on it.
Typically my process for this is:
Drop the constraints
Trunc the table
Recreate the constraints.
(All in a transaction, of course.)
Of course, this only applies if the child has already been truncated. Otherwise I go a differ...
Manipulating an Access database from Java without ODBC
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UCanAccess is a pure Java JDBC driver that allows us to read from and write to Access databases without using ODBC. It uses two other packages, Jackcess and HSQLDB, to perform these tasks. The following is a brief overview of how to get it set up.
Option 1: Using...