大约有 30,000 项符合查询结果(耗时:0.0300秒) [XML]

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How to get JSON objects value if its name contains dots?

... What you want is: var smth = mydata.list[0]["points.bean.pointsBase"][0].time; In JavaScript, any field you can access using the . operator, you can access using [] with a string version of the field name. share ...
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How to get the current date/time in Java [duplicate]

What's the best way to get the current date/time in Java? 28 Answers 28 ...
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What is the use of “assert” in Python?

...’s assert statement is a debugging aid, not a mechanism for handling run-time errors. The goal of using assertions is to let developers find the likely root cause of a bug more quickly. An assertion error should never be raised unless there’s a bug in your program. ...
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How to calculate a logistic sigmoid function in Python?

... replace math.exp with np.exp you won't get NaNs, although you will get runtime warnings. – Richard Rast Jul 20 '16 at 17:18 2 ...
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Ruby: Can I write multi-line string with no concatenation?

...rmally prefer this behaviour, it has caused unexpected issues for me a few times. A solution is to write your multi-line string like how the OP did in the question. – Dennis Jan 20 '15 at 12:24 ...
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Fast way of finding lines in one file that are not in another?

...ion), repeated runs with chunks of file1 and reading file2 completely each time: split -l 20000 --filter='gawk -f linesnotin.awk - file2' < file1 Note the use and placement of - meaning stdin on the gawk command line. This is provided by split from file1 in chunks of 20000 line per-invocation....
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How much overhead does SSL impose?

... socket communication? I'm talking only about the comm processing and wire time, not counting application-level processing. ...
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How do I calculate someone's age in Java?

... Check out Joda, which simplifies date/time calculations (Joda is also the basis of the new standard Java date/time apis, so you'll be learning a soon-to-be-standard API). EDIT: Java 8 has something very similar and is worth checking out. e.g. LocalDate birth...
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Android SQLite DB When to Close

...e when it is initialized. It is safe to leave the database open the entire time so that when someone calls my class to work with the database it is already open? Or should I open and close the database before and after each access is needed. Is there any harm in just leaving it open the whole time? ...
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How to check if a process id (PID) exists

...n exit code of 0 means that it was possible to send a signal to it at that time. It does not mean that you can be sure that you can send a signal to it a millisecond later. – Christoffer Hammarström May 1 '13 at 10:21 ...