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How to trace the path in a Breadth-First Search?

... found if node == end: return path # enumerate all adjacent nodes, construct a new path and push it into the queue for adjacent in graph.get(node, []): new_path = list(path) new_path.append(adjacent) queue.append(new_path) prin...
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Is there a way to make text unselectable on an HTML page? [duplicate]

...e. Likewise, I believe, with the querySelector API which I'm guessing typically hooks into the CSS/xpath selector engines directly. This may change over time as browsers find perf tweaks but I would definitely keep this in mind when supporting IE<=8, maybe <=9. – Erik Re...
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Ruby class instance variable vs. class variable

...n store something common to that class without having sub-classes automatically also get them (and vice-versa). With class variables, you have the convenience of not having to write self.class from an instance object, and (when desirable) you also get automatic sharing throughout the class hierarchy...
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How to resolve symbolic links in a shell script

...ircumstances, namely if the symlink of interest is to a directory that actually exists; plus, you must cd to it first, before calling pwd -P. In other words: it won't allow you to resolve (see the target of) symlinks to files or of broken symlinks, and for resolving existing-directory symlinks you h...
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Static method behavior in multi-threaded environment in java

...that bother me and make several arguments in my mind. I want to throw out all the doubts about below questions. 2 Answers ...
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Subtract days from a date in JavaScript

...t saving time is only 23 hours long, and the last is 25 hours long. it usually doesn't matter, but it's something to consider. – Kip Aug 18 '09 at 20:55 12 ...
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Is it possible for a computer to “learn” a regular expression by user-provided examples?

...at most modern "regular expressions" used in programming languages are actually stronger than regular languages, and therefore sometimes harder to learn. share | improve this answer | ...
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Fastest Way to Find Distance Between Two Lat/Long Points

I currently have just under a million locations in a mysql database all with longitude and latitude information. 15 Answers...
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Select columns from result set of stored procedure

... Here's a link to a pretty good document explaining all the different ways to solve your problem (although a lot of them can't be used since you can't modify the existing stored procedure.) How to Share Data Between Stored Procedures Gulzar's answer will work (it is document...
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What does 'low in coupling and high in cohesion' mean

...uld be close to each other, so we should strive for high cohesion and bind all related code together as close as possible. It has to do with the elements within the module/class. Coupling refers to the degree to which the different modules/classes depend on each other, it is suggested that all modu...