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CSV file written with Python has blank lines between each row
...his code reads thefile.csv , makes changes, and writes results to thefile_subset1 .
9 Answers
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Is there a built in function for string natural sort?
...use either of the below formulas.
>>> from natsort import natsort_keygen, ns
>>> l1 = ['elm0', 'elm1', 'Elm2', 'elm9', 'elm10', 'Elm11', 'Elm12', 'elm13']
>>> l2 = l1[:]
>>> natsort_key1 = natsort_keygen(key=lambda y: y.lower())
>>> l1.sort(key=natsort_k...
Booleans, conditional operators and autoboxing
...a.lang.Exception;
descriptor: ([Ljava/lang/String;)V
flags: ACC_PUBLIC, ACC_STATIC
Code:
stack=2, locals=2, args_size=1
0: invokestatic #2 // Method returnsNull:()Ljava/lang/Boolean;
3: invokevirtual #3 // Method java...
Knight's Shortest Path on Chessboard
...oints in a graph can be found using http://en.wikipedia.org/wiki/Dijkstra's_algorithm
Pseudo-code from wikipedia-page:
function Dijkstra(Graph, source):
for each vertex v in Graph: // Initializations
dist[v] := infinity // Unknown distance function from source to ...
Permission denied on accessing host directory in Docker
.../db:/var/db:z rhel7 /bin/sh
Will automatically do the chcon -Rt svirt_sandbox_file_t /var/db
described in the man page.
Even better, you can use Z.
docker run -v /var/db:/var/db:Z rhel7 /bin/sh
This will label the content inside the container with the exact MCS
label that the c...
How to write a Unit Test?
...can do your assertions like below:
Assertions.assertTrue(f.flipEquiv(node1_1, node2_1));
These are the imports that I added:
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;
This is the test that I wrote:
You can check your methods like below:
Assertions.assertE...
Is Javascript a Functional Programming Language?
...hing in the form of destructuring assignments: developer.mozilla.org/en/New_in_JavaScript_1.7#section_20
– jbeard4
Oct 18 '10 at 21:34
...
How do I allow HTTPS for Apache on localhost?
...nabled - there should be no hash at the start of this line:
LoadModule ssl_module modules/mod_ssl.so
Some Apache installations place the SSL config in a separate file. If so, ensure that the SSL conf file is being included. In my case I had to uncomment this line:
Include conf/extra/httpd-ssl....
UTF-8 all the way through
...n UTF-8. Note that MySQL will implicitly use utf8mb4 encoding if a utf8mb4_* collation is specified (without any explicit character set).
In older versions of MySQL (< 5.5.3), you'll unfortunately be forced to use simply utf8, which only supports a subset of Unicode characters. I wish I were k...
Relative URL to a different port number in a hyperlink?
... ASP, something like ...
<a href="<%=Request.ServerVariables("SERVER_NAME")%>:8080">Look at the other port</a>
should work. However, the exact format will depend on the technology you are using.
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