大约有 3,300 项符合查询结果(耗时:0.0332秒) [XML]
Check if string ends with one of the strings from a list
...
If you want to check if a string ends with a letter: import string; str.endswith(tuple(string.ascii_lowercase))
– Alex Willison
May 16 '17 at 13:43
3
...
A top-like utility for monitoring CUDA activity on a GPU
... combines this information, but you can use the nvidia-smi tool to get the raw data, like so (thanks to @jmsu for the tip on -l):
$ nvidia-smi -q -g 0 -d UTILIZATION -l
==============NVSMI LOG==============
Timestamp : Tue Nov 22 11:50:05 2011
Driver Version ...
Is there a print_r or var_dump equivalent in Ruby / Ruby on Rails?
...
#start your server
rails -s
results (in browser)
- !ruby/object:Post
raw_attributes:
id: 2
title: My Second Post
body: Welcome! This is another example post
published_at: '2015-10-19 23:00:43.469520'
created_at: '2015-10-20 00:00:43.470739'
updated_at: '2015-10-20 00:0...
How to combine multiple conditions to subset a data-frame using “OR”?
... operators [ and [[:
set.seed(1)
df <- data.frame(v1 = runif(10), v2 = letters[1:10])
Several options
df[df[1] < 0.5 | df[2] == "g", ]
df[df[[1]] < 0.5 | df[[2]] == "g", ]
df[df["v1"] < 0.5 | df["v2"] == "g", ]
df$name is equivalent to df[["name", exact = FALSE]]
Using dplyr:
l...
How to remove the last character from a string?
...
replace will replace all instances of a letter. All you need to do is use substring():
public String method(String str) {
if (str != null && str.length() > 0 && str.charAt(str.length() - 1) == 'x') {
str = str.substring(0, str.length...
What does Java option -Xmx stand for? [duplicate]
...tion pool. This value must a multiple of 1024 greater than 2MB. Append the letter k or K to indicate kilobytes, or m or M to indicate megabytes. The default value is 64MB. The upper limit for this value will be approximately 4000m on Solaris 7 and Solaris 8 SPARC platforms and 2000m on Solaris 2.6 a...
Convert hyphens to camel case (camelCase)
...
Notice that strings that start with delimiters will result in a uppercase letter at the beginning.
If that is not what you would expect, you can always use lcfirst.
Here's my lcfirst if you need it:
function lcfirst(str) {
return str && str.charAt(0).toLowerCase() + str.substring(1);
}...
CSS text-decoration underline color [duplicate]
...ly line color which is under text?
I would like to see something like red letters with a blue line below it, but I can't find out how to get this done.
...
php var_dump() vs print_r()
...rinted by print_r is much more in readable format where as var_dump prints raw values.
print_r function can be used in many contexts where as var_dump can be used in debugging purposes mainly since it can't return value.
sh...
How to select last two characters of a string
...ed to select last two characters from the variable, whether it is digit or letters.
9 Answers
...