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Can an array be top-level JSON-text?
...."
ECMA-404: Any JSON value. "A JSON text is a sequence of tokens formed from Unicode code points that conforms to the JSON value
grammar."
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What are OLTP and OLAP. What is the difference between them?
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Very clear information. Thank you for sharing it helped me clear my doubts.
– CapturedTree
Jul 23 '16 at 4:25
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Test for existence of nested JavaScript object key
... function, using ES6 features and recursion (it's also in proper tail call form):
function checkNested(obj, level, ...rest) {
if (obj === undefined) return false
if (rest.length == 0 && obj.hasOwnProperty(level)) return true
return checkNested(obj[level], ...rest)
}
However, if you...
How to extend an existing JavaScript array with another array, without creating a new array
...ill be fine).
There's also some nice ECMAScript 6 sugar for this in the form of the spread operator:
const a = [1, 2, 3];
const b = [...a, 5, 4, 3];
(It also copies.)
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SAML vs federated login with OAuth
... problems.
SAML is a set of standards that have been defined to share information about who a user is, what his set of attributes are, and give you a way to grant/deny access to something or even request authentication.
OAuth is more about delegating access to something. You are basically all...
SVG fill color transparency / alpha?
...ion 62 (was previously supported from version 54 with the Experimental Platform Features flag enabled).
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Sample settings.xml for maven
...reements. See the NOTICE file
distributed with this work for additional information
regarding copyright ownership. The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License. You may obtain a copy of the...
__proto__ VS. prototype in JavaScript
...ess to all the properties in its proto chain as linked by __proto__ , thus forming the basis for prototypal inheritance.
__proto__ is not a standard way of accessing the prototype chain, the standard but similar approach is to use Object.getPrototypeOf(obj).
Below code for instanceof operator give...
Remove duplicated rows using dplyr
... = sample(0:1, 10, replace = T),
z = 1:10
)
# In each group of rows formed by combinations of x and y
# retain only the first row
df %>%
group_by(x, y) %>%
slice(1)
Difference from using the distinct() function
The advantage of this solution is that it makes it expli...
WatiN or Selenium? [closed]
... and Selenium . Which do you prefer for automated testing of ASP.NET web forms? Which of these products work better for you?
...