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How to check if element exists using a lambda expression?
...we are not actually interested in the tab, but some mapping of it. Second, by using method references (which is only possible because we break the initial lambda into two steps) we show that there are no surprises hidden in the code. Third, by using method references, we do not create a new Predicat...
How to run functions in parallel?
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@Lamar McAdory: Please explain what exactly you mean by "at the same time", perhaps giving a concrete example of what you did, what you were expecting to happen, and what actually happened.
– NPE
Aug 26 '11 at 16:30
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How to use count and group by at the same select statement
I have an sql select query that has a group by.
I want to count all the records after the group by statement.
Is there a way for this directly from sql?
For example, having a table with users I want to select the different towns and the total number of users
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Check if an element is a child of a parent
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You can get your code to work by just swapping the two terms:
if ($(target).parents('div#hello').length) {
You had the child and parent round the wrong way.
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Is there a builtin identity function in python?
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@Marcin: Neither, just going by what he asked in his question.
– Ethan Furman
Jan 5 '12 at 22:48
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Find nearest latitude/longitude with an SQL query
...ull the record from the database, which has nearest latitude and longitude by the distance, if that distance gets longer than specified one, then don't retrieve it.
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Javascript - Open a given URL in a new tab by clicking a button
I would like to have a button that redirects to a given URL and opens in a new tab. How can this be done?
13 Answers
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Best practices when running Node.js with port 80 (Ubuntu / Linode) [closed]
...rt (80). You goal is to be able to publish a website that visitors can use by navigating to an easy to use URL like http://ip:port/
Unfortunately, unless you sign on as root, you’ll normally have to use a URL like http://ip:port - where port number > 1024.
A lot of people get stuck here, but ...
Why is a div with “display: table-cell;” not affected by margin?
...sFiddle demo
Different margin horizontally and vertically
As mentioned by Diego Quirós, the border-spacing property also accepts two values to set a different margin for the horizontal and vertical axes.
For example
.table {/*...*/border-spacing:3px 5px;} /* 3px horizontally, 5px vertically *...
Force CloudFront distribution/file update
...ver used lambda functions before, it is really easy -- just follow my step-by-step instructions and it will take just 5 mins:
Step 1
Go to https://console.aws.amazon.com/lambda/home and click Create a lambda function
Step 2
Click on Blank Function (custom)
Step 3
Click on empty (stroked) box a...