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How can I convert a Unix timestamp to DateTime and vice versa?
... For the .NET Framework 4.6 and above there is now static DateTimeOffset.FromUnixMilliseconds and DateTimeOffset.ToUnixMilliseconds.
– rookie1024
May 18 '16 at 2:49
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Safe (bounds-checked) array lookup in Swift, through optional bindings?
...on because you would break all the code that expects a non-optional values from arrays.
Instead, you could subclass Array, and override subscript to return an optional. Or, more practically, you could extend Array with a non-subscript method that does this.
extension Array {
// Safely lookup ...
Weird “[]” after Java method signature
...at's a funny Question.
In java you can say int[] a;, as well as int a[];.
From this perspective, in order to get the same result just need to move the [] and write public int[] get() {. Still looks like the code came from an obfuscator...
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How do Google+ +1 widgets break out of their iframe?
...Why not just generate a div on the page? Well because the link originates from the iframe, a CSRF (cross-site request forgery) token can be embedded in the request and the parent site cannot read this token and forge the request. So the iframe is an anti-CSRF measure that relies upon the Origin In...
How do I get LaTeX to hyphenate a word that contains a dash?
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From https://texfaq.org/FAQ-nohyph:
TeX won’t hyphenate a word that’s already been hyphenated. For
example, the (caricature) English surname Smyth-Postlethwaite wouldn’t
hyphenate, which could be troublesome. Th...
Importing data from a JSON file into R
Is there a way to import data from a JSON file into R? More specifically, the file is an array of JSON objects with string fields, objects, and arrays. The RJSON Package isn't very clear on how to deal with this http://cran.r-project.org/web/packages/rjson/rjson.pdf .
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What's the difference between identifying and non-identifying relationships?
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I will never use this to model that. The best answer is from "aqsa rao" below that states the following: "An identifying relationship means that the child table cannot be uniquely identified without the parent." Because your definition is adding unecessary semantic that could conf...
How to force cp to overwrite without confirmation
...ill abolish that for the current session, otherwise you can just remove it from your shell profile.
You can temporarily bypass an alias and use the non-aliased version of a command by prefixing it with \, e.g. \cp whatever
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How to check if character is a letter in Javascript?
... The code only tests whether the character is one of the basic letter from a to z (very few languages are written using only those letters). This is very different from the Java function that was mentioned.
– Jukka K. Korpela
Mar 25 '12 at 19:19
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Difference between a Seq and a List in Scala
...rder of elements. Sequences provide a method apply() for indexing, ranging from 0 up to the length of the sequence. Seq has many subclasses including Queue, Range, List, Stack, and LinkedList.
A List is a Seq that is implemented as an immutable linked list. It's best used in cases with last-in firs...