大约有 46,000 项符合查询结果（耗时：0.0544秒） [XML]
Fancybox doesn't work with jQuery v1.9.0 [ f.browser is undefined / Cannot read property 'msie' ]
Fancybox breaks with the new jQuery v1.9.0.
4 Answers
4
...
“Comparison method violates its general contract!”
...
|
edited May 30 '14 at 6:34
rkg
15533 silver badges1313 bronze badges
answered Nov 30 '11 at...
How do you know when to use fold-left and when to use fold-right?
...
105
You can transfer a fold into an infix operator notation (writing in between):
This example fol...
Converting integer to binary in python
...
>>> '{0:08b}'.format(6)
'00000110'
Just to explain the parts of the formatting string:
{} places a variable into a string
0 takes the variable at argument position 0
: adds formatting options for this variable (otherwise it wou...
How to add an empty column to a dataframe?
...t; df = pd.DataFrame({"A": [1,2,3], "B": [2,3,4]})
>>> df
A B
0 1 2
1 2 3
2 3 4
>>> df["C"] = ""
>>> df["D"] = np.nan
>>> df
A B C D
0 1 2 NaN
1 2 3 NaN
2 3 4 NaN
...
CoffeeScript, When to use fat arrow (=>) over arrow (->) and vice versa
...
answered Jan 23 '12 at 0:18
nicolaskruchtennicolaskruchten
20k77 gold badges5858 silver badges8080 bronze badges
...
Returning first x items from array
...ray_slice returns a slice of an array
$sliced_array = array_slice($array, 0, 5)
is the code you want in your case to return the first five elements
share
|
improve this answer
|
...
Add a new element to an array without specifying the index in Bash
...
|
edited Dec 23 '09 at 9:18
answered Dec 23 '09 at 9:02
...
onTouchListener warning: onTouch should call View#performClick when a click is detected
...
SeckoSecko
6,72044 gold badges2727 silver badges3535 bronze badges
...
How to read data when some numbers contain commas as thousand separator?
...", and then convert the string to numeric using as.numeric:
y <- c("1,200","20,000","100","12,111")
as.numeric(gsub(",", "", y))
# [1] 1200 20000 100 12111
This was also answered previously on R-Help (and in Q2 here).
Alternatively, you can pre-process the file, for instance with sed in unix...