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Why is React's concept of Virtual DOM said to be more performant than dirty model checking?
...model can be slow. But isn't calculating the diff between virtual DOMs actually even less performant since the virtual DOM, in most of the cases, should be bigger than model?
...
Creating a textarea with auto-resize
...I would have many many many such textareas (about as much as one would normally have lines in a large text document). In that case it is really slow. (In Firefox it's insanely slow.) So I really would like an approach that uses pure CSS. This would be possible with contenteditable, but I want it to ...
How to turn a String into a JavaScript function call? [duplicate]
...eId) {}. Once we have a reference to a function inside a variable, we can call this function by "calling the variable", i.e. fn(t.parentNode.id), which equals clickedOnItem(t.parentNode.id), which was what the OP wanted.
More full example:
/* Somewhere: */
window.settings = {
/* [..] Other setti...
What makes Lisp macros so special?
...bleByTwo = [x for x in range(10) if x % 2 == 0]
yields a list containing all even numbers between 0 and 9. Back in the Python 1.5 days there was no such syntax; you'd use something more like this:
divisibleByTwo = []
for x in range( 10 ):
if x % 2 == 0:
divisibleByTwo.append( x )
Thes...
logger configuration to log to file and print to stdout
...d the StreamHandler. The StreamHandler writes to stderr. Not sure if you really need stdout over stderr, but this is what I use when I setup the Python logger and I also add the FileHandler as well. Then all my logs go to both places (which is what it sounds like you want).
import logging
logging.g...
Rails.env vs RAILS_ENV
...hen checking what env one is running in. What's preferred? Are they, for all intents and purposes equal?
5 Answers
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Transfer git repositories from GitLab to GitHub - can we, how to and pitfalls (if any)?
... https URL of the GitHub repo:
The requested URL returned an error: 403
All you need to do is to enter your GitHub password, but the OP suggests:
Then you might need to push it the ssh way. You can read more on how to do it here.
See "Pushing to Git returning Error Code 403 fatal: HTTP requ...
Update a local branch with the changes from a tracked remote branch
...ch track a remote branch?" and
"Git: Why do I need to do --set-upstream-to all the time?"
)
git branch -f --track my_local_branch origin/my_remote_branch
# OR (if my_local_branch is currently checked out):
$ git branch --set-upstream-to my_local_branch origin/my_remote_branch
(git branch -f --tra...
Why do Java webapps use .do extension? Where did it come from?
...oach will be described
below.
Prefix matching means that you want
all URLs that start (after the context
path part) with a particular value to
be passed to this servlet. Such an
entry might look like this:
<servlet-mapping>
<servlet-name>action</servlet-name>
...
Some font-size's rendered larger on Safari (iPhone)
...blem you're describing centers around the fact that Mobile Safari automatically scales text if it thinks the text will render too small. You can get around this with the CSS property -webkit-text-size-adjust. Here's a sample of how to apply this to your body, just for the iPhone:
@media screen and...