大约有 30,000 项符合查询结果（耗时：0.0388秒） [XML]
Converting a column within pandas dataframe from int to string
...as pd; c = pd.Series(range(1000))').timeit(1000) >>> 0.41499893204309046 >>> timeit.Timer('c.astype(str)', setup='import pandas as pd; c = pd.Series(range(1000))').timeit(1000) 0.8004439630312845
– hamx0r
Apr 12 '18 at 23:23
...
Terminating a script in PowerShell
...om a function it will return to where ever the function was called from.
Execution of any commands after the call point that it is returned to will continue from that point. If a script is called from the shell and it contains the Return command outside any functions then when it returns to the sh...
Exception messages in English?
...your setup as you need to be able to create a .config file aside the main .exe file) but that works for me. So, just create an app.config in dev, (or a [myapp].exe.config or web.config in production) that contains the following lines for example:
<configuration>
...
<runtime>
&l...
How to convert UTF-8 byte[] to string?
...
332
There're at least four different ways doing this conversion.
Encoding's GetString, but you wo...
How to convert an image to base64 encoding?
Can you please guide me how can I convert an image from a URL to base64 encoding?
9 Answers
...
Decode Base64 data in Java
I have an image that is Base64 encoded. What is the best way to decode that in Java? Hopefully using only the libraries included with Sun Java 6.
...
Speed comparison with Project Euler: C vs Python vs Erlang vs Haskell
...r, sqrt). A worker/wrapper transformation gives us:
$ time ./so
842161320
real 0m7.954s
user 0m7.944s
sys 0m0.004s
That's right, 7.95 seconds. Consistently half a second faster than the C solution. Without the -fllvm flag I'm still getting 8.182 seconds, so the NCG bac...
How to start jenkins on different port rather than 8080 using command prompt in Windows?
...ng out that 'jenkins.xml' is the one located in the same folder as jenkins.exe. Not the one that you may have copied to folder pointed to by environment variable 'JENKINS_HOME'
– Travis
Jun 5 '15 at 20:02
...
Cannot ping AWS EC2 instance
... You should see something like:
PING 10.0.0.15 (10.0.0.15): 56 data bytes
64 bytes from 10.0.0.14: icmp_seq=1 ttl=64 time=3.9 ms
64 bytes from 10.0.0.14: icmp_seq=2 ttl=64 time=3.9 ms
64 bytes from 10.0.0.14: icmp_seq=3 ttl=64 time=10.6 ms
64 bytes from 10.0.0.14: icmp_seq=4 ttl=64 time=40.6 ms
64 ...
Encrypt and decrypt a string in C#?
...yte array");
}
byte[] buffer = new byte[BitConverter.ToInt32(rawLength, 0)];
if (s.Read(buffer, 0, buffer.Length) != buffer.Length)
{
throw new SystemException("Did not read byte array properly");
}
return buffer;
}
}
...