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What is an example of the Liskov Substitution Principle?

...and Width properties and ThreeDBoard provides the Z axis. Where it breaks down is when you look at all the other members inherited from Board. The methods for AddUnit, GetTile, GetUnits and so on, all take both X and Y parameters in the Board class but the ThreeDBoard needs a Z parameter as well. ...
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Node.js getaddrinfo ENOTFOUND

...'t be included in the host field. Other answers also recommends the use of https module if SSL is required. share | improve this answer | follow | ...
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How do I download a tarball from GitHub using cURL?

... Use the -L option to follow redirects: curl -L https://github.com/pinard/Pymacs/tarball/v0.24-beta2 | tar zx share | improve this answer | follow...
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How do I allow HTTPS for Apache on localhost?

I was asked to set up HTTPS with a self-signed cert on Apache on localhost, but how do I actually do that? I have no idea at all. ...
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Can a project have multiple origins?

...in. Try adding a remote called "github" instead: $ git remote add github https://github.com/Company_Name/repository_name.git # push master to github $ git push github master # Push my-branch to github and set it to track github/my-branch $ git push -u github my-branch # Make some existing branc...
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What are the performance characteristics of sqlite with very large database files? [closed]

...Optimize your schema to store what you need. Sometimes this means breaking down tables and/or even compressing/transforming your data before inserting to the database. A great example is to storing IP addresses as (long) integers. One table per db file - to minimize lock contention. (Use ATTACH DATA...
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Should I use a class or dictionary?

... I've marked this down because you should always default to the simpler data structure where possible. In this case, a dictionary is sufficient for the intended purpose. The question where would your __init__ code go? is concerning. It could p...
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Update Git submodule to latest commit on origin

... # Now the submodules are in the state you want, so git commit -am "Pulled down update to submodule_dir" Or, if you're a busy person: git submodule foreach git pull origin master share | improve...
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How do I link to Google Maps with a particular longitude and latitude?

...r for the latest. This for a map with the marker (via aaronm's comment): https://www.google.com/maps/?q=-15.623037,18.388672 For an older example (no marker on this one): https://www.google.com/maps/preview/@-15.623037,18.388672,8z The oldest format: http://maps.google.com/maps?ll=-15.623037,...
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How can I force users to access my page over HTTPS instead of HTTP?

I've got just one page that I want to force to be accessed as an HTTPS page (PHP on Apache). How do I do this without making the whole directory require HTTPS? Or, if you submit a form to an HTTPS page from an HTTP page, does it send it by HTTPS instead of HTTP? ...