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Explain the use of a bit vector for determining if all characters are unique
...ge for bits. Every bit in integer value can be treated as a flag, so eventually int is an array of bits (flag). Each bit in your code states whether the character with bit's index was found in string or not. You could use bit vector for the same reason instead of int. There are two differences betwe...
How to convert R Markdown to PDF?
...ension is .rmd and not .Rmd).
RMDFILE=example-r-markdown
Rscript -e "require(knitr); require(markdown); knit('$RMDFILE.rmd', '$RMDFILE.md'); markdownToHTML('$RMDFILE.md', '$RMDFILE.html', options=c('use_xhml'))"
and then this command to convert to pdf
Pandoc -s example-r-markdown.html -o exam...
getViewTypeCount and getItemViewType methods of ArrayAdapter
...bout view types. In fact, BaseAdapter.java provides a default behavior for all adapters:
public int getItemViewType(int position) {
return 0;
}
public int getViewTypeCount() {
return 1;
}
This indeed provides you with the same view type for every row.
Edit - to outline the general flow:...
SPAN vs DIV (inline-block)
...turn and have default margin.
Note that inline-block is not supported in all browsers. For instance in Firefox 2 and less you must use:
display: -moz-inline-stack;
which displays slightly different than an inline block element in FF3.
There is a great article here on creating cross browser inl...
How can I quantify difference between two images?
...s on the first image to edges on the second.
Is there noise in the image?
All sensors pollute the image with some amount of noise. Low-cost sensors have more noise. You may wish to apply some noise reduction before you compare images. Blur is the most simple (but not the best) approach here.
What k...
How to create a directory using nerdtree
...time I need to create a new directory I need to go to terminal. Is there a quick and easy way to create a directory using NERDTree.
...
Pointers in Python?
...ur request is utterly impossible. Why ask for something impossible and totally different from the (possible) thing you actually want?!
Maybe you don't realize how drastically different barenames and decorated names are. When you refer to a barename a, you're getting exactly the object a was last ...
Different dependencies for different build profiles
...
To quote the Maven documentation on this:
A profile element contains both an optional activation (a profile trigger) and the set of changes to be made to the POM if that profile has been activated. For example, a project built ...
Closing WebSocket correctly (HTML5, Javascript)
...ink the connection is still open even when it's not.
The browser should really do this for you when you close or reload the page. However, you can make sure a close frame is sent by doing capturing the beforeunload event:
window.onbeforeunload = function() {
websocket.onclose = function () {};...
Regular cast vs. static_cast vs. dynamic_cast [duplicate]
... twenty years, but there's one aspect of these languages that I've never really understood. I've obviously used regular casts i.e.
...