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Rails check if yield :area is defined in content_for
...nt_for_whatever is deprecated.
Use content_for? instead, like this:
<% if content_for?(:whatever) %>
<div><%= yield(:whatever) %></div>
<% end %>
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How do I format a string using a dictionary in python-3.x?
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Since the question is specific to Python 3, here's using the new f-string syntax, available since Python 3.6:
>>> geopoint = {'latitude':41.123,'longitude':71.091}
>>> print(f'{geopoint["latitude"]} {geopoint["longitude"]}')
41.123 ...
Iterating over Java collections in Scala
...here is a wrapper class (scala.collection.jcl.MutableIterator.Wrapper). So if you define
implicit def javaIteratorToScalaIterator[A](it : java.util.Iterator[A]) = new Wrapper(it)
then it will act as a sub class of the Scala iterator so you can do foreach.
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Convert from List into IEnumerable format
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If you are not suppose to add something to the Collection then you should use/return IEnumerable.
– AZ_
Jun 25 '19 at 8:38
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How do you enable “Enable .NET Framework source stepping”?
...ogram Manager, Base Class Libraries, .NET Framework) that the issue should now be resolved. The Connect entry is marked as Resolved (Fixed) :
...
setTimeout / clearTimeout problems
...ion call.
You need to persist it, you can put it outside the function, or if you don't want to expose the variable as global, you can store it in a closure, e.g.:
var endAndStartTimer = (function () {
var timer; // variable persisted here
return function () {
window.clearTimeout(timer);
...
What do the terms “CPU bound” and “I/O bound” mean?
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It's pretty intuitive:
A program is CPU bound if it would go faster if the CPU were faster, i.e. it spends the majority of its time simply using the CPU (doing calculations). A program that computes new digits of π will typically be CPU-bound, it's just crunching number...
How to get all properties values of a JavaScript Object (without knowing the keys)?
...lues = obj => Object.keys(obj).map(key => obj[key]);
which you can now use like
// ['one', 'two', 'three']
var values = Object.values({ a: 'one', b: 'two', c: 'three' });
If you want to avoid shimming when a native Object.values exists, then you can do:
Object.values = Object.values || (...
Can iterators be reset in Python?
... one crucial warning in the docs for it:
This itertool may require significant
auxiliary storage (depending on how
much temporary data needs to be
stored). In general, if one iterator
uses most or all of the data before
another iterator starts, it is faster
to use list() instead of t...
How do I use JDK 7 on Mac OSX?
... I will update the answer with the latest information. Please let me know if this is not the right answer. Thanks.
– okysabeni
May 4 '12 at 9:48
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