大约有 29,800 项符合查询结果（耗时：0.0130秒） [XML]
What's the difference between UTF-8 and UTF-8 without BOM?
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J PJ P
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How to find the statistical mode?
...ered Dec 14 '12 at 8:00
Rasmus BååthRasmus Bååth
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What does character set and collation mean exactly?
...llation is how to compare characters, in latin9, there are letters as e é è ê f, if sorted by their binary representation, it will go e f é ê è but if the collation is set to, for example, French, you'll have them in the order you thought they would be, which is all of e é è ê are equal, an...
Does PostgreSQL support “accent insensitive” collations?
...u003cpath fill-rule=\"evenodd\" clip-rule=\"evenodd\" d=\"M25.6622 17.6335C27.8049 17.6335 29.3739 16.9402 30.2537 15.6379C30.8468 14.7755 30.9615 13.5579 30.9615 11.9512V6.59049C30.9615 5.28821 30.4833 4.66231 29.4502 4.66231C28.9913 4.66231 28.4555 4.94978 28.1109 5.50789C27.499 4.86533 26.7335 4....
What does the Ellipsis object do?
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In Python 3, you can¹ use the Ellipsis literal ... as a “nop” placeholder for code that hasn't been written yet:
def will_do_something():
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This is not magic; any expression can be used instead of ..., e.g.:
def will_do_something():
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Coding in Other (Spoken) Languages
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I'm having trouble finding references, but I'm reminded of three stories.
A Lisp hacker defend...
Generating random whole numbers in JavaScript in a specific range?
...st learning :)
– Ionuț G. Stan
Jan 27 '16 at 14:19
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This question is old, but understanding thi...
Determine the line of code that causes a segmentation fault?
...orthand for backtrace.
– rustyx
May 27 '19 at 7:53
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Extract subset of key-value pairs from Python dictionary object?
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edited Jun 27 '19 at 7:07
poorva
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a...
Confusion between factor levels and factor labels
... This is different from the concept of labels in statistical packages like SPSS, and can be confusing in the beginning.
What you do in this line of code
df$f <- factor(df$f, levels=c('a','b','c'),
labels=c('Treatment A: XYZ','Treatment B: YZX','Treatment C: ZYX'))
is telling to R that ther...