append interview questions
Top append frequently asked interview questions
I have a certain textbox and I want to add a div after it.
I've tried the .append() function, but that only adds the div in the element.
For example, I have:
<input type="text" id="bla" />
and I want to change that into:
<input type="text" id="bla" /><div id="space"></div>
Source: (StackOverflow)
What is the prescribed way to append a value to an Array in CoffeeScript? I've checked the PragProg CoffeeScript book but it only discusses creating, slicing and splicing, and iterating, but not appending.
Source: (StackOverflow)
How can I use .append()
with effects like show('slow')
Having effects on append
doesn't seem to work at all, and it give the same result as normal show()
. No transitions, no animations.
How can I append one div to another, and have a slideDown
or show('slow')
effect on it?
Source: (StackOverflow)
I've got 2 ways I can create a <div>
using jQuery
.
Either:
var div = $("<div></div>");
$("#box").append(div);
Or:
$("#box").append("<div></div>");
What are the drawbacks of using second way other than re-usability?
Source: (StackOverflow)
Given two lists:
x = [1,2,3]
y = [4,5,6]
What is the syntax to:
- Insert
x
into y
such that y
now looks like [1, 2, 3, [4, 5, 6]]
?
- Insert all the items of
x
into y
such that y
now looks like [1, 2, 3, 4, 5, 6]
?
Source: (StackOverflow)
In PHP I would add strings together like this:
$foo = "Hello";
$foo .= " World";
So $foo
would be "Hello World"
How would I do that in Bash?
Source: (StackOverflow)
How do you append to the file instead of overwriting it? Is there a special function that appends to the file?
Source: (StackOverflow)
If there are two arrays created in swift like this:
var a:[CGFloat] = [1, 2, 3]
var b:[CGFloat] = [4, 5, 6]
How can they be merged to [1, 2, 3, 4, 5, 6]
?
Source: (StackOverflow)
This question already has an answer here:
I have two dictionaries and I'd like to be able to make them one:
Something like this pseudo-Python would be nice:
dic0 = {'dic0': 0}
dic1 = {'dic1': 1}
ndic = dic0 + dic1
# ndic would equal {'dic0': 0, 'dic1': 1}
Source: (StackOverflow)
Prepending to a list is easy:
user=> (conj '(:bar :baz) :foo)
(:foo :bar :baz)
Appending to a vector is easy:
user=> (conj [:bar :baz] :foo)
[:bar :baz :foo]
How do I (idiomatically) prepend to a vector, while getting back a vector?
This does not work as it returns a seq, not a vector:
user=> (cons :foo [:bar :baz])
(:foo :bar :baz)
This is ugly (IMVHO):
user=> (apply vector (cons :foo [:bar :baz]))
[:foo :bar :baz]
Note: I basically just want a datastructure that I can append and prepend to. Appending to large lists should have a large performance penalty, so I thought of vectors..
Source: (StackOverflow)
Why do these two operations (append()
resp. +
) give different results?
>>> c = [1, 2, 3]
>>> c
[1, 2, 3]
>>> c += c
>>> c
[1, 2, 3, 1, 2, 3]
>>> c = [1, 2, 3]
>>> c.append(c)
>>> c
[1, 2, 3, [...]]
>>>
In the last case there's actually an infinite recursion. c[-1]
and c
are the same. Why is it different with the +
operation?
Source: (StackOverflow)