大约有 13,906 项符合查询结果(耗时:0.0245秒) [XML]

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How do I change the formatting of numbers on an axis with ggplot?

I'm using R and ggplot to draw a scatterplot of some data, all is fine except that the numbers on the y-axis are coming out with computer style exponent formatting, i.e. 4e+05, 5e+05, etc. This is obviously unacceptable, so I want to get it to display them as 500,000, 400,000, and so on. Getting a p...
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Fastest Way to Serve a File Using PHP

...y to have one solution that is both fast and work everywhere. Using the X-SendFile header As documented by others it's actually the best way. The basis is that you do your access control in php and then instead of sending the file yourself you tell the web server to do it. The basic php code is...
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OS X Terminal Colors [closed]

I'm new to OS X, having just gotten a Mac after working with Ubuntu Linux for some time. Among the many things I'm trying to figure out is the absence of colors in my terminal window - like the ones that are shown (on Linux) when running ls -la or git status ... ...
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What are “named tuples” in Python?

Reading the changes in Python 3.1 , I found something... unexpected: 11 Answers 11 ...
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Elegant ways to support equivalence (“equality”) in Python classes

...re no implied relationships among the comparison operators. The truth of x==y does not imply that x!=y is false. Accordingly, when defining __eq__(), one should also define __ne__() so that the operators will behave as expected. def __ne__(self, other): """Overrides the default implement...
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Introducing FOREIGN KEY constraint may cause cycles or multiple cascade paths - why?

...you have two cascading delete paths from Stage to Side - which causes the exception. You must either make the Stage optional in at least one of the entities (i.e. remove the [Required] attribute from the Stage properties) or disable cascading delete with Fluent API (not possible with data annotatio...
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How to convert ‘false’ to 0 and ‘true’ to 1 in Python

... Use int() on a boolean test: x = int(x == 'true') int() turns the boolean into 1 or 0. Note that any value not equal to 'true' will result in 0 being returned. share |...
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Difference between volatile and synchronized in Java

...'s important to understand that there are two aspects to thread safety. execution control, and memory visibility The first has to do with controlling when code executes (including the order in which instructions are executed) and whether it can execute concurrently, and the second to do with w...
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Remove IE10's “clear field” X button on certain inputs?

... is there any way to disable it? For instance, if the form is a single text field and already has a "clear" button beside it, it's superfluous to also have the X. In this situation, it would be better to remove it. ...
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General guidelines to avoid memory leaks in C++ [closed]

... To compile using g++ one needs to add param: -std=c++0x – Paweł Szczur Nov 28 '12 at 16:25 or yo...