大约有 47,000 项符合查询结果（耗时：0.0590秒） [XML]
Calculating text width
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Fantastico! Simple and clean.
– Carey Estes
Jul 2 '14 at 14:50
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Count number of objects in list [closed]
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length(x)
Get or set the length of vectors (including lists) and factors, and of any other R object for which a method has been defined.
lengths(x)
Get the length of each element of a list or atomic vector (is.atomic) as an integer or numeric vector.
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What is the use of a private static variable in Java?
...I am also aware that static members are shared by all instances of a class and are not reallocated in each instance.
19 Ans...
java: Class.isInstance vs Class.isAssignableFrom
Let clazz be some Class and obj be some Object .
4 Answers
4
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What does the “Just” syntax mean in Haskell?
...d does. Every Haskell tutorial that I have looked at just starts using it randomly and never explains what it does (and I've looked at many).
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How to make the division of 2 ints produce a float instead of another int?
...another Bruce Eckels exercise in calculating velocity, v = s / t where s and t are integers. How do I make it so the division cranks out a float?
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Segmentation fault on large array sizes
...ete[] the array. A better solution would be to use std::vector<int> and resize it to 1000000 elements.
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Remove characters after specific character in string, then remove substring?
I feel kind of dumb posting this when this seems kind of simple and there are tons of questions on strings/characters/regex, but I couldn't find quite what I needed (except in another language: Remove All Text After Certain Point ).
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Iterating through directories with Python
I need to iterate through the subdirectories of a given directory and search for files. If I get a file I have to open it and change the content and replace it with my own lines.
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Convert a string representation of a hex dump to a byte array using Java?
...ons why it is an improvement:
Safe with leading zeros (unlike BigInteger) and with negative byte values (unlike Byte.parseByte)
Doesn't convert the String into a char[], or create StringBuilder and String objects for every single byte.
No library dependencies that may not be available
Feel free...