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How to subtract X day from a Date object in Java?
I want to do something like:
10 Answers
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Opening Vim help in a vertical split window
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:vertical (vert) works:
:vert help
You can also control whether the window splits on the left/top or the right/bottom with topleft (to) and botright (bo). For example, to open help in the right window of a vertical split:
:vert bo help
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Is there a simple way to remove multiple spaces in a string?
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>>> import re
>>> re.sub(' +', ' ', 'The quick brown fox')
'The quick brown fox'
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When use getOne and findOne methods Spring Data JPA
...entity lazy loading. So to ensure the effective loading of the entity, invoking a method on it is required.
findOne()/findById() is really more clear and simple to use than getOne().
So in the very most of cases, favor findOne()/findById() over getOne().
API Change
From at least, the 2.0 versio...
.NET XML serialization gotchas? [closed]
... a web page (ASP.NET), you don't want to include the Unicode Byte-Order Mark. Of course, the ways to use or not use the BOM are almost the same:
BAD (includes BOM):
XmlTextWriter wr = new XmlTextWriter(stream, new System.Text.Encoding.UTF8);
GOOD:
XmlTextWriter wr = new XmlTextWriter(stream, n...
Autocompletion in Vim
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You can use a plugin like AutoComplPop to get automatic code completion as you type.
2015 Edit: I personally use YouCompleteMe now.
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What is better, adjacency lists or adjacency matrices for graph problems in C++?
...s on the problem.
Adjacency Matrix
Uses O(n^2) memory
It is fast to lookup and check for presence or absence of a specific edge
between any two nodes O(1)
It is slow to iterate over all edges
It is slow to add/delete a node; a complex operation O(n^2)
It is fast to add a new edge O(1)
Adjace...
How to get the IP address of the docker host from inside a docker container
As the title says. I need to be able to retrieve the IP address the docker hosts and the portmaps from the host to the container, and doing that inside of the container.
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How to remove spaces from a string using JavaScript?
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How to split the name string in mysql?
... of cool things you can do with substr, locate, substring_index, etc. Check the manual for some real confusion. http://dev.mysql.com/doc/refman/5.0/en/string-functions.html
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