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How to get next/previous record in MySQL?
Say I have records with IDs 3,4,7,9 and I want to be able to go from one to another by navigation via next/previous links. The problem is, that I don't know how to fetch record with nearest higher ID.
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Java: Class.this
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edited Jul 25 at 14:40
Rarblack
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Heroku/devise - Missing host to link to! Please provide :host parameter or set default_url_options[:
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244
You need to add this to your environment.rb
config.action_mailer.default_url_options = { :ho...
Difference between del, remove and pop on lists
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1423
The effects of the three different methods to remove an element from a list:
remove removes th...
What is the fastest or most elegant way to compute a set difference using Javascript arrays?
...'t know if this is most effective, but perhaps the shortest
A = [1, 2, 3, 4];
B = [1, 3, 4, 7];
diff = A.filter(function(x) { return B.indexOf(x) < 0 })
console.log(diff);
Updated to ES6:
A = [1, 2, 3, 4];
B = [1, 3, 4, 7];
diff = A.filter(x => !B.includes(x) );
console.log(diff);
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What is the 'pythonic' equivalent to the 'fold' function from functional programming?
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Fred FooFred Foo
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The type must be a reference type in order to use it as parameter 'T' in the generic type or method
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482
I can't repro, but I suspect that in your actual code there is a constraint somewhere that T :...
What does JVM flag CMSClassUnloadingEnabled actually do?
...nks to Sam Hasler). See this answer: https://stackoverflow.com/a/3720052/2541
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Javascript reduce on array of objects
... the sum of the x properties of the parameters:
var arr = [{x:1},{x:2},{x:4}];
arr.reduce(function (a, b) {
return {x: a.x + b.x}; // returns object with property x
})
// ES6
arr.reduce((a, b) => ({x: a.x + b.x}));
// -> {x: 7}
Explanation added from comments:
The return value of each...