大约有 48,000 项符合查询结果（耗时：0.0656秒） [XML]
How do you make a WPF slider snap only to discrete integer positions?
...
answered Oct 6 '08 at 2:10
Brian StewartBrian Stewart
8,4181010 gold badges4949 silver badges6565 bronze badges
...
Rounding BigDecimal to *always* have two decimal places
...
value = value.setScale(2, RoundingMode.CEILING)
share
|
improve this answer
|
follow
|
...
What is the purpose of the -nodes argument in openssl?
...
2 Answers
2
Active
...
What is the theoretical maximum number of open TCP connections that a modern Linux box can have
... |
edited Jul 4 at 19:42
Simeon Leyzerzon
16.6k66 gold badges4141 silver badges6464 bronze badges
ans...
What are the “standard unambiguous date” formats for string-to-date conversion in R?
...element,
and give an error if neither works.
as.Date("01 Jan 2000") yields an error because the format isn't one of the two listed above. as.Date("01/01/2000") yields an incorrect answer because the date isn't in one of the two formats listed above.
I take "standard unambiguous" to ...
Index on multiple columns in Ruby on Rails
...
2 Answers
2
Active
...
Select records from NOW() -1 Day
...
280
Judging by the documentation for date/time functions, you should be able to do something like:...
Create whole path automatically when writing to a new file
...
Something like:
File file = new File("C:\\user\\Desktop\\dir1\\dir2\\filename.txt");
file.getParentFile().mkdirs();
FileWriter writer = new FileWriter(file);
share
|
improve this answer
...
Numbering rows within groups in a data frame
...
284
Use ave, ddply, dplyr or data.table:
df$num <- ave(df$val, df$cat, FUN = seq_along)
or:
...
How do you use the ? : (conditional) operator in JavaScript?
...userType = "Minor";
} else {
userType = "Adult";
}
if (userIsYoungerThan21) {
serveDrink("Grape Juice");
} else {
serveDrink("Wine");
}
This can be shortened with the ?: like so:
var userType = userIsYoungerThan18 ? "Minor" : "Adult";
serveDrink(userIsYoungerThan21 ? "Grape Juice" : "Wine...