大约有 47,000 项符合查询结果（耗时：0.0499秒） [XML]
How do you connect localhost in the Android emulator? [duplicate]
...
Use 10.0.2.2 to access your actual machine.
As you've learned, when you use the emulator, localhost (127.0.0.1) refers to the device's own loopback service, not the one on your machine as you may expect.
You can use 10.0.2.2 to ...
Understanding scala enumerations
...
150
the Enumeration trait has a type member Value representing the individual elements of the enumer...
Depend on a branch or tag using a git URL in a package.json?
...
580
From the npm docs:
git://github.com/<user>/<project>.git#<branch>
git://gith...
YouTube Video Embedded via iframe Ignoring z-index?
...
10 Answers
10
Active
...
Create Pandas DataFrame from a string
...that to the pandas.read_csv function. E.g:
import sys
if sys.version_info[0] < 3:
from StringIO import StringIO
else:
from io import StringIO
import pandas as pd
TESTDATA = StringIO("""col1;col2;col3
1;4.4;99
2;4.5;200
3;4.7;65
4;3.2;140
""")
df = pd.read_csv(TEST...
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...
How to check if running as root in a bash script
...
430
The $EUID environment variable holds the current user's UID. Root's UID is 0. Use something like...
How do I check for a network connection?
...
You can check for a network connection in .NET 2.0 using GetIsNetworkAvailable():
System.Net.NetworkInformation.NetworkInterface.GetIsNetworkAvailable()
To monitor changes in IP address or changes in network availability use the events from the NetworkChange class:
Syst...
How to produce a range with step n in bash? (generate a sequence of numbers with increments)
...
201
I'd do
for i in `seq 0 2 10`; do echo $i; done
(though of course seq 0 2 10 will produce the...
Set time to 00:00:00
...oblem resetting hours in Java. For a given date I want to set the hours to 00:00:00.
12 Answers
...