大约有 44,000 项符合查询结果(耗时:0.0576秒) [XML]

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What is a “callback” in C and how are they implemented?

...RandomValue(void) { return rand(); } int main(void) { int myarray[10]; populate_array(myarray, 10, getNextRandomValue); ... } Here, the populate_array function takes a function pointer as its third parameter, and calls it to get the values to populate the array with. We've written...
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Can I implement an autonomous `self` member type in C++?

...ef? Why? – Miles Rout Jan 21 '14 at 10:22 7 @MilesRout This is a question about the question, not...
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How to pad zeroes to a string?

...the rjust method of the string object. This example will make a string of 10 characters long, padding as necessary. >>> t = 'test' >>> t.rjust(10, '0') >>> '000000test' share | ...
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Standardize data columns in R

... function on the data to do what you want. dat <- data.frame(x = rnorm(10, 30, .2), y = runif(10, 3, 5)) scaled.dat <- scale(dat) # check that we get mean of 0 and sd of 1 colMeans(scaled.dat) # faster version of apply(scaled.dat, 2, mean) apply(scaled.dat, 2, sd) Using built in functions...
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Splitting templated C++ classes into .hpp/.cpp files--is it possible?

... answered Jan 26 '10 at 23:52 Sharjith N.Sharjith N. 1,67411 gold badge1111 silver badges77 bronze badges ...
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“where 1=1” statement [duplicate]

... 10 Answers 10 Active ...
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How to update a record using sequelize for node?

... 110 I have not used Sequelize, but after reading its documentation, it's obvious that you are insta...
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How to return result of a SELECT inside a function in PostgreSQL?

... -- column alias only visible inside , (count(*) * 100) / _max_tokens -- I added brackets FROM ( SELECT t.txt FROM token t WHERE t.chartype = 'ALPHABETIC' LIMIT _max_tokens ) t GROUP BY t.txt ORDER BY cnt DESC; ...
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How to set the current working directory? [duplicate]

... | edited Feb 13 '13 at 10:43 Alex L 7,35444 gold badges4040 silver badges6969 bronze badges answered ...
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Automatically add newline at end of curl response body

...the weird characters. – jcollum Aug 10 '17 at 20:57 ...