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What is the difference between a symbolic link and a hard link?
...nd how to create one, but do not understand the use of a hard link and how it differs from a symbolic one.
21 Answers
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What's the difference between “Solutions Architect” and “Applications Architect”? [closed]
As far as I can see Solutions Architect is just a different "marketing" term for Applications Architect . Is that correct or are the roles actually different somehow? If so, how?
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How to check for an active Internet connection on iOS or macOS?
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Important: This check should always be performed asynchronously. The majority of answers below are synchronous so be careful otherwise you'll freeze up your app.
Swift
1) Install via CocoaPods or Carthage: https://github.com/ashleymills/Reachability.swift
2) Test reachability via closures
let...
Listing and deleting Git commits that are under no branch (dangling?)
I've got a Git repository with plenty of commits that are under no particular branch, I can git show them, but when I try to list branches that contain them, it reports back nothing.
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Negative weights using Dijkstra's Algorithm
I am trying to understand why Dijkstra's algorithm will not work with negative weights. Reading an example on Shortest Paths , I am trying to figure out the following scenario:
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Connection pooling options with JDBC: DBCP vs C3P0
...ure which generated load and concurrency against the two to assess their suitability under real life conditions.
DBCP consistently generated exceptions into our test application and struggled to reach levels of performance which C3P0 was more than capable of handling without any exceptions.
C3P0...
C++: const reference, before vs after type-specifier
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No difference as const is read right-to-left with respect to the &, so both represent a reference to an immutable Fred instance.
Fred& const would mean the reference itself is immutable, which is redundant; when dealing with const pointers both Fred const* and ...
'setInterval' vs 'setTimeout' [duplicate]
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setInterval(expression, timeout); runs the code/function in intervals, with the length of the timeout between them.
Example:
var intervalID = setInterval(alert, 1000); // Will alert every second.
// clearInterval(intervalID); // Will clear the timer.
setTimeout(alert, 1000); // Will alert once...
How to set entire application in portrait mode only?
How do I set it so the application is running in portrait mode only? I want the landscape mode to be disabled while the application is running. How do I do it programmatically?
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SQLite Concurrent Access
Does SQLite3 safely handle concurrent access by multiple processes
reading/writing from the same DB? Are there any platform exceptions to that?
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