大约有 47,000 项符合查询结果（耗时：0.0485秒） [XML]
GroupBy pandas DataFrame and select most common value
...
10 Answers
10
Active
...
How to check if a variable is an integer in JavaScript?
...the === operator (strict equality) as below,
if (data === parseInt(data, 10))
alert("data is integer")
else
alert("data is not an integer")
share
|
improve this answer
|
...
How dangerous is it to compare floating point values?
...nt the actual result. An easy example where you can see this is adding x = 0x1fffffe and y = 1 as floats. Here, x has 24 bits of precision in the mantissa (ok) and y has just 1 bit, but when you add them, their bits are not in overlapping places, and the result would need 25 bits of precision. Inste...
Get application version name using adb
...
arbuzarbuz
2,09011 gold badge1515 silver badges1414 bronze badges
...
What's the best way to check if a String represents an integer in Java?
...ncerned with potential overflow problems this function will perform about 20-30 times faster than using Integer.parseInt().
public static boolean isInteger(String str) {
if (str == null) {
return false;
}
int length = str.length();
if (length == 0) {
return false;
...
How to get the nth occurrence in a string?
...
|
edited Mar 30 at 14:56
mplungjan
118k2323 gold badges142142 silver badges201201 bronze badges
...
Get the week start date and week end date from week number
...
answered Aug 12 '09 at 16:14
Robin DayRobin Day
92.5k2222 gold badges110110 silver badges160160 bronze badges
...
Capture key press (or keydown) event on DIV element
...
302
(1) Set the tabindex attribute:
<div id="mydiv" tabindex="0" />
(2) Bind to keydown:
...
Show percent % instead of counts in charts of categorical variables
... geom_bar(aes(y = (..count..)/sum(..count..))) +
## version 3.0.0
scale_y_continuous(labels=percent)
Here's a reproducible example using mtcars:
ggplot(mtcars, aes(x = factor(hp))) +
geom_bar(aes(y = (..count..)/sum(..count..))) +
scale_y_continuous(labels...