大约有 44,500 项符合查询结果（耗时：0.0321秒） [XML]
Preferred way to create a Scala list
...
answered Aug 6 '09 at 20:56
Daniel C. SobralDaniel C. Sobral
280k8282 gold badges469469 silver badges666666 bronze badges
...
Dictionaries and default values
...
323
Like this:
host = connectionDetails.get('host', someDefaultValue)
...
Get ID of last inserted document in a mongoDB w/ Java driver
...
answered Jul 26 '10 at 21:41
Matt WMatt W
5,79833 gold badges2727 silver badges4040 bronze badges
...
Finding local IP addresses using Python's stdlib
How can I find local IP addresses (i.e. 192.168.x.x or 10.0.x.x) in Python platform independently and using only the standard library?
...
How can I check for Python version in a program that uses new language features?
...
112
You can test using eval:
try:
eval("1 if True else 2")
except SyntaxError:
# doesn't have t...
Add a common Legend for combined ggplots
...
Update 2015-Feb
See Steven's answer below
df1 <- read.table(text="group x y
group1 -0.212201 0.358867
group2 -0.279756 -0.126194
group3 0.186860 -0.203273
group4 0.417117 -0.002592
group1 -0.212201 0.358867
group...
Should methods in a Java interface be declared with or without a public access modifier?
...
12 Answers
12
Active
...
Emulate ggplot2 default color palette
What function can I use to emulate ggplot2's default color palette for a desired number of colors. For example, an input of 3 would produce a character vector of HEX colors with these colors:
...
Check if a JavaScript string is a URL
...
32 Answers
32
Active
...
How to debug Lock wait timeout exceeded on MySQL?
...
265
What gives this away is the word transaction. It is evident by the statement that the query w...