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What's the difference between Ruby's dup and clone methods?
...significant difference too:
dup creates a new object without its id being set, so you can save a new object to the database by hitting .save
category2 = category.dup
#=> #<Category id: nil, name: "Favorites">
clone creates a new object with the same id, so all the changes made to that ...
How does zip(*[iter(s)]*n) work in Python?
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Static/Dynamic vs Strong/Weak
...s way: in a statically typed language the type is static, meaning once you set a variable to a type, you CANNOT change it. That is because typing is associated with the variable rather than the value it refers to.
For example in Java:
String str = "Hello"; //statically typed as string
str = 5; ...
How to automatically start a service when running a docker container?
...s a problem in your Dockerfile:
RUN service mysql restart && /tmp/setup.sh
Docker images do not save running processes. Therefore, your RUN command executes only during docker build phase and stops after the build is completed. Instead, you need to specify the command when the container...
Adding a column to a data.frame
I have the data.frame below. I want to add a column that classifies my data according to column 1 ( h_no ) in that way that the first series of h_no 1,2,3,4 is class 1, the second series of h_no (1 to 7) is class 2 etc. such as indicated in the last column.
...
“This project is incompatible with the current version of Visual Studio”
I was getting the below message from Visual Studio 2010.
15 Answers
15
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How do you get a directory listing sorted by creation date in python?
... that I was wanting to use glob to only search for files with a particular set of file extensions, which glob() was better suited to. To use listdir here's what it would look like:
import os
search_dir = "/mydir/"
os.chdir(search_dir)
files = filter(os.path.isfile, os.listdir(search_dir))
files =...
How to squash commits in git after they have been pushed?
...pplies to all the refs that are pushed, hence using
it with push.default set to matching or with multiple push
destinations configured with remote.*.push may overwrite refs other
than the current branch (including local refs that are strictly behind
their remote counterpart). To force a push...
UnicodeDecodeError: 'ascii' codec can't decode byte 0xe2 in position 13: ordinal not in range(128)
...
You can try this also:
import sys
reload(sys)
sys.setdefaultencoding('utf8')
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Download attachments using Java Mail
...
Without exception handling, but here goes:
List<File> attachments = new ArrayList<File>();
for (Message message : temp) {
Multipart multipart = (Multipart) message.getContent();
for (int i = 0; i < multipart.getCount(); i++) {
BodyPart bodyPart...