How do you make Vim unhighlight what you searched for?
Just put this in your .vimrc
search
What is the difference between graph search and tree search?
Judging from the existing answers, there seems to be a lot of confusion about this concept. The Problem Is Always a Graph The distinction between tree search and graph search is not rooted in the fact whether the problem graph is a tree or a general graph. It is always assumed you’re dealing with a … Read more
Search all the occurrences of a string in the entire project in Android Studio
TLDR: ⌃⇧F on MacOS will open “Find in path” dialog. First of all, this IDEA has a nice “Find Usages” command. It can be found in the context menu, when the cursor is on some field, method, etc. It’s context-aware, and as far as I know, is the best way to find class, method or field … Read more
Solr vs. ElasticSearch
Update Now that the question scope has been corrected, I might add something in this regard as well: There are many comparisons between Apache Solr and ElasticSearch available, so I’ll reference those I found most useful myself, i.e. covering the most important aspects: Bob Yoplait already linked kimchy’s answer to ElasticSearch, Sphinx, Lucene, Solr, Xapian. Which fits for which usage?, … Read more
Python list of dictionaries search
Assume I have this: and by searching “Pam” as name, I want to retrieve the related dictionary: {name: “Pam”, age: 7} How to achieve this ?
Consistent and Admissible Heuristics
As Russel and Norvig point out in Artificial Intelligence: A Modern Approach (the most commonly used AI textbook) it is challenging to come up with a heuristic that is admissible but not consistent. Obviously, you can select values for nodes in a graph such that the heuristic they represent is admissible but not consistent. This … Read more
Is there a short contains function for lists?
You can use this syntax: Also, inverse operator: It works fine for lists, tuples, sets and dicts (check keys). Note that this is an O(n) operation in lists and tuples, but an O(1) operation in sets and dicts.
How can I exclude one word with grep?
You can do it using -v (for –invert-match) option of grep as: grep -v “unwanted_word” file will filter the lines that have the unwanted_word and grep XXXXXXXX will list only lines with pattern XXXXXXXX. EDIT: From your comment it looks like you want to list all lines without the unwanted_word. In that case all you need is:
how to calculate binary search complexity
Here a more mathematical way of seeing it, though not really complicated. IMO much clearer as informal ones: The question is, how many times can you divide N by 2 until you have 1? This is essentially saying, do a binary search (half the elements) until you found it. In a formula this would be … Read more
Search for words with telephone numbers from 2-3-4 tree
The key here would be to acquire all the different character combinations that can derive from the characters related to the supplied number in the left to right sequence of that number. Obviously the larger the supplied number, the more combinations there will be. The number of 26678837 which you provided in your post for … Read more