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例1.2 使用LINGO软件计算6个发点8个收点的最小费用运输问题。产销单位运价如下表。
销地
产地
B1
B2
B3
B4
B5
B6
B7
B8
产量
A1
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JS Client-Side Exif Orientation: Rotate and Mirror JPEG Images
...on can be spotty 1 . The same source also provides a nice summary of the 8 different orientations a JPEG can have:
12 A...
List all sequences in a Postgres db 8.1 with SQL
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edited Mar 11 '11 at 10:48
community wiki
2 re...
How can I open a Shell inside a Vim Window?
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89
Neovim and Vim 8.2 support this natively via the :ter[minal] command.
See terminal-window in t...
Java 8 NullPointerException in Collectors.toMap
The Java 8 Collectors.toMap throws a NullPointerException if one of the values is 'null'. I don't understand this behaviour, maps can contain null pointers as value without any problems. Is there a good reason why values cannot be null for Collectors.toMap ?
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How to check if a file exists in a folder?
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198
This is a way to see if any XML-files exists in that folder, yes.
To check for specific files u...
Why in C++ do we use DWORD rather than unsigned int? [duplicate]
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answered Jun 8 '10 at 6:46
GManNickGGManNickG
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How to use `string.startsWith()` method ignoring the case?
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8 Answers
8
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How to find largest objects in a SQL Server database?
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287
I've been using this SQL script (which I got from someone, somewhere - can't reconstruct who it...