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Scala how can I count the number of occurrences in a list
I want to implement it like this: list.count(2) (returns 3).
16 Answers
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Converting Integer to String with comma for thousands
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How can I make my own base image for Docker?
According to the Docker documentation , to build your own image, you must always specify a base image using the FROM instruction.
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JavaScript: remove event listener
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You need to use named functions.
Also, the click variable needs to be outside the handler to increment.
var click_count = 0;
function myClick(event) {
click_count++;
if(click_count == 50) {
// to remove
canvas.removeEv...
How to check the extension of a filename in a bash script?
...Note that the space between file: and -4 is required, as the ':-' modifier means something different.
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Ruby 2.0.0p0 IRB warning: “DL is deprecated, please use Fiddle”
...ther words, a totally clean re-install. Upon starting IRB, I received this message:
5 Answers
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Re-enabling window.alert in Chrome
I accidently checked the "disable alerts from this site" box in Chrome, and now I cannot get any window.alert to work on my localhost.
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How can I round down a number in Javascript?
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It's also the slowest method; if you need to perform a lot of these, use the bitwise | operator (see my post).
– geraldalewis
Sep 16 '09 at 23:18
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Using comma as list separator with AngularJS
... This technique is more flexible than using .join because it allows the elements in the list to each be members of an array, like: <b ng-repeat="friend in friends">{{friend.email}}{{{true: '', false: ', '}[$last]}}</b>
– Ryan Marcus
May 25 '13 at 20...
Replacing NULL with 0 in a SQL server query
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When you want to replace a possibly null column with something else, use IsNull.
SELECT ISNULL(myColumn, 0 ) FROM myTable
This will put a 0 in myColumn if it is null in the first place.
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