HashMask | browser addon for password fields | Browser Plugin library
kandi X-RAY | HashMask Summary
kandi X-RAY | HashMask Summary
#HashMask (Chrome) Inspired by this demo. ##So, what is it? HashMask is a useful extension for anyone browsing the web with Chrome. It's a tool that helps you remember your passwords by displaying visual hashes of them as you type. ##Install HashMask's stable releases are on the Chrome Web Store, along with a video demonstration. The extension is free, and will work on recent versions of Chrome and Chromium. ##Demo Check this out if you want to try HashMask before installing it. ##Firefox HashMask is not yet available for Firefox, though we're planning on hopefully getting a port out soon. If you'd like to help out with porting, please let us know (via GitHub issues or email). ##Contributing Fork away or file some issues. Most of the important stuff you might want to change is in the src folder.
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QUESTION
I am currently writing a UCI chess engine. Inside my engine, I have a big transposition table which maps keys to values.
When implementing this, I had the memory already in mind and did not want to create new objects when placing something in the table so I filled the entire table with empty objects to begin with.
The code looks like this:
...ANSWER
Answered 2020-Apr-30 at 12:06Unless a huge part of your table is filled (say 80%), you should create (and delete) entries on demand to save memory. Objects in Java exist, whetherthey are referenced in an array (or other object) or not, until the time the garbage collector cleans them up, after the last non-weak reference has been cleared and the last thread loses access to the object. And even then, the garbage collector may take ages to clean the object, depending on it's setup. Above all, the JVM is reluctant to return memory, once allocated, because reallocating it tends to be expensive. However all of the above is implementation dependant.
A concrete suggestion to fill your table, write an ensureEntry
method, to create an object in your table on demand, so you don't have to initialize it, on startup:
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