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Why is using “for…in” for array iteration a bad idea?
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As I said before to iterate over arrays or array-like objects, the best thing is to use a sequential loop, such as a plain-old for/while loop.
When you want to enumerate only the own properties of an object (the ones that aren't inherited), you can use the hasOwnProperty method:
for (var p...
Can CSS detect the number of children an element has?
...somewhat close, but probably won't work in your example and don't have the best browser compatibility.
:only-child
The :only-child is one of the few true counting selectors in the sense that it's only applied when there is one child of the element's parent. Using your idealized example, it acts l...
How to get the first element of an array?
...rn the first item without modifying the original... don't know if it's the best way but if you chain a array with .map().filter().some().shift() it's okay.. otherwise i would use yourArray[0]
– Michael J. Zoidl
Feb 1 '17 at 8:22
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How to make junior programmers write tests? [closed]
...ardest things to do. Getting your people to get it.
Sometimes one of the best ways to help junior level programmers 'get it' and learn the right techniques from the seniors is to do a bit of pair programming.
Try this: on an upcoming project, pair the junior guy up with yourself or another senior...
When to use generic methods and when to use wild-card?
...highly suggest you to go through the link I posted at the end. That is the best resource on Generics you would get.
– Rohit Jain
Aug 11 '13 at 21:42
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What is a elegant way in Ruby to tell if a variable is a Hash or an Array?
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is_a? is the best option, since it also returns true for subclasses.
– Fábio Batista
Mar 20 '11 at 6:32
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How to add property to a class dynamically?
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Sorry, at best, this answer is only applicable to the special case where one wanteda class consisting of only read-only attributes all know in advance. In other words I don't think it addresses the broader question of how to add genera...
Is string in array?
What would be the best way to look in a string[] to see if it contains a element. This was my first shot at it. But perhaps there is something that I am overlooking. The array size will be no larger than 200 elements.
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Samples of Scala and Java code where Scala code looks simpler/has fewer lines?
...B where B is required to have an Ordering. Ordering is a type-class. Think best of both worlds: Like Comparable, it's implicit for the type in question, but like Comparator, it's extensible and can be added retrospectively to types that did not have it. Since Java lacks type-classes, it has to dupli...
Scala how can I count the number of occurrences in a list
... i would love to enthusiastically upvote, if it were (and select it as the best answer if i were the OP);
– doug
Feb 13 '15 at 4:01
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