大约有 45,000 项符合查询结果(耗时:0.0379秒) [XML]

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How to go about formatting 1200 to 1.2k in java

...cient than a previous solution I wrote that was using arrays and was more difficult to read. private static final NavigableMap<Long, String> suffixes = new TreeMap<> (); static { suffixes.put(1_000L, "k"); suffixes.put(1_000_000L, "M"); suffixes.put(1_000_000_000L, "G"); suffixes...
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Difference between global and device functions

Can anyone describe the differences between __global__ and __device__ ? 9 Answers ...
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Dynamic instantiation from string name of a class in dynamically imported module?

... If anyone is having trouble with the import method Sven mentioned above, I found my code worked better using the following method instead importlib.import_module. Can be used like: module = importlib.import_module(module_nam...
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How to update the value stored in Dictionary in C#?

... So this simple method seems also to be a better substitute for the well known ".Add" and ".TryGetValue" method without the necessity to change the value. (?) At least, if it doesn't matter to overwrite keys, for example in a situation where it is not excluded that keys are written more than once i...
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What is the “N+1 selects problem” in ORM (Object-Relational Mapping)?

...s (also rows). In other words, Car → Wheel is a 1-to-many relationship. Now, let's say you need to iterate through all the cars, and for each one, print out a list of the wheels. The naive O/R implementation would do the following: SELECT * FROM Cars; And then for each Car: SELECT * FROM Wheel W...
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How to get the client IP address in PHP [duplicate]

...e IP can be an internal IP from the LAN behind the proxy. This means that if you are going to save the $_SERVER['HTTP_X_FORWARDED_FOR'], make sure you also save the $_SERVER['REMOTE_ADDR'] value. E.g. by saving both values in different fields in your database. If you are going to save the IP to a ...
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How to read a single character from the user?

...illic) letters well? I am having a problem with that and can't figure out, if it is my mistake, or not. – Phlya Mar 29 '13 at 18:01 7 ...
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Creating a dynamic choice field

... If you want to use the CheckboxSelectMultiple widget with this, you'll want to use MultipleChoiceField or ModelMultipleChoiceField. At first, it seems to work with ChoiceField, but the internals will break when you try to sav...
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Python memoising/deferred lookup property decorator

...tructor but only upon first read. These attributes do not change over the lifetime of the instance, but they're a real bottleneck to calculate that first time and only really accessed for special cases. Hence they can also be cached after they've been retrieved from the database (this therefore fits...
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How to get the return value from a thread in python?

...processing module has a nice interface for this using the Pool class. And if you want to stick with threads rather than processes, you can just use the multiprocessing.pool.ThreadPool class as a drop-in replacement. def foo(bar, baz): print 'hello {0}'.format(bar) return 'foo' + baz from mult...