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One-liner to recursively list directories in Ruby?
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In PHP or other languages to get the content of a directory and all its subdirectories, you have to write some lines of code, but in Ruby it takes 2 lines:
require 'find'
Find.find('./') do |f| p f end
this will print the con...
Does java.util.List.isEmpty() check if the list itself is null? [duplicate]
...I deleted my stupid comment, before I saw your answer. Maybe he comes from PHP where we have !empty($foo) as somewhat an alias for isset($foo) && $foo != "".
– Aufziehvogel
Jul 16 '12 at 20:39
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Are negative array indexes allowed in C?
... What happens on 64 bit systems (LP64) when you have a 32 bit int index which is negative ? Should the index get promoted to a 64 bit signed int prior to the address calculation ?
– Paul R
Oct 11 '10 at 16:02
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jQuery to loop through elements with the same class
...t.querySelectorAll('.testimonial');
Array.from(elements).forEach((element, index) => {
// conditional logic here.. access element
});
In older browsers:
var testimonials = document.querySelectorAll('.testimonial');
Array.prototype.forEach.call(testimonials, function(element, index) {
// cond...
Auto increment in phpmyadmin
I have an existing database using PHP, MySQL and phpMyAdmin.
9 Answers
9
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css3 drop shadow under another div, z-index not working [duplicate]
...blem is that the "middle" div is covering the drop shadow. i tried using z-index to put the header div about the middle div, but it's not working (the shadow is still being covered). when i put a break between the divs, i can see the shadow and therefore i know that part of the code is working prope...
How to get value at a specific index of array In JavaScript?
I have an array and simply want to get the element at index 1.
5 Answers
5
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Loop through list with both content and index [duplicate]
... for me to loop through a python list to get both the contents and their indexes. What I usually do is the following:
6 A...
Set value for particular cell in pandas DataFrame using index
...iew. For this reason the docs recommend avoiding assignments with "chained indexing".
So the recommended alternative is
df.at['C', 'x'] = 10
which does modify df.
In [18]: %timeit df.set_value('C', 'x', 10)
100000 loops, best of 3: 2.9 µs per loop
In [20]: %timeit df['x']['C'] = 10
1000...
is it possible to change values of the array when doing foreach in javascript?
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The callback is passed the element, the index, and the array itself.
arr.forEach(function(part, index, theArray) {
theArray[index] = "hello world";
});
edit — as noted in a comment, the .forEach() function can take a second argument, which will be used as th...