大约有 31,500 项符合查询结果（耗时：0.0481秒） [XML]
When to use std::begin and std::end instead of container specific versions [duplicate]
...s C >
auto begin( C& c ) -> decltype(c.begin());
You see that all it does is reference the begin() anyway. I suppose a decent compiler will make the difference nil, so I guess it comes down to preference. Personally, I'd use cont.begin() and cont.end() just so that I wouldn't have to ...
Genymotion, “Unable to load VirtualBox engine.” on Mavericks. VBox is setup correctly
...nces->Security and Privacy->General (You'll get a popup when you install VirtualBox).
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Error: This Android SDK requires Android Developer Toolkit version 22.6.1 or above
I have installed adt version 22.6.1 already 2 days ago. It was working fine. Suddenly, When I open eclipse today, it keeps showing me following error:
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When & why to use delegates? [duplicate]
...n, any method that matches this signature, to the delegate and it will be called each time my delegate is called".
Typical use is of course events. All the OnEventX delegate to the methods the user defines.
Delegates are useful to offer to the user of your objects some ability to customize their b...
What is the difference between include and extend in Ruby?
...end Mod. In this case the individual object gets Mod's methods even though all other objects with the same class as o do not.
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How can I fill out a Python string with spaces?
...idth=16,
)
Which results in (you guessed it):
'Hi '
And for all these, you can use python 3.6 f-strings:
message = 'Hi'
fill = ' '
align = '<'
width = 16
f'{message:{fill}{align}{width}}'
And of course the result:
'Hi '
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mysql update column with value from another table
...answer if you need to change tableB.value according to tableA.value dynamically you can do for example:
UPDATE tableB
INNER JOIN tableA ON tableB.name = tableA.name
SET tableB.value = IF(tableA.value > 0, tableA.value, tableB.value)
WHERE tableA.name = 'Joe'
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Forward host port to docker container
...e to run a process in a Docker container to listen to the queue and (optionally) write to the database.
5 Answers
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Ruby 2.0.0p0 IRB warning: “DL is deprecated, please use Fiddle”
I just uninstalled my older versions of Ruby, removed all of my gems
(including Rails), and installed Ruby 2.0. In other words, a totally clean re-install. Upon starting IRB, I received this message:
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Serializing an object as UTF-8 XML in .NET
...o a string again, so its no longer in UTF-8, but back in UTF-16 (though ideally its best to consider strings at a higher level than any encoding, except when forced to do so).
To get the actual UTF-8 octets you could use:
var serializer = new XmlSerializer(typeof(SomeSerializableObject));
var mem...