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Why does ++[[]][+[]]+[+[]] return the string “10”?
... can simplify the mess into something more legible. Let's substitute [] back for A:
(+[] + 1)
+
[0]
Before +[] can coerce the array into the number 0, it needs to be coerced into a string first, which is "", again. Finally, 1 is added, which results in 1.
(+[] + 1) === (+"" + 1)
(+"" + 1) === (...
How to check if a map contains a key in Go?
I know I can iterate over a map m by,
10 Answers
10
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format date with moment.js
... 13 '13 at 23:23
Jonathan LonowskiJonathan Lonowski
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Checking if form has been submitted - PHP
What is the best way of checking whether or not a form has been submitted to determine whether I should pass the form's variables to my validation class?
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prevent refresh of page when button inside form clicked
... will fix it.
<form method="POST">
<button name="data" onclick="return getData()">Click</button>
</form>
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Approximate cost to access various caches and main memory?
...essors. I should stress, this has what you need and more (for example, check page 22 for some timings & cycles for example).
Additionally, this page has some details on clock cycles etc. The second link served the following numbers:
Core i7 Xeon 5500 Series Data Source Latency (approximate) ...
JPA CascadeType.ALL does not delete orphans
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community wiki
5 revs, 3 users 83%Varun Mehta
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How to run Nginx within a Docker container without halting?
I have Nginx installed on a Docker container, and am trying to run it like this:
9 Answers
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How to query nested objects?
...ges.find( { 'headers.From': "reservations@marriott.com" } )
This only looks at the headers.From field, not affected by other fields contained in, or missing from, headers.
Dot-notation docs
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$(document).ready shorthand
...question has nothing to do with .ready(). Rather, it is an immediately-invoked function expression (IIFE) with the jQuery object as its argument. Its purpose is to restrict the scope of at least the $ variable to its own block so it doesn't cause conflicts. You typically see the pattern used by jQue...