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Getting a list of values from a list of dicts
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Here's another way to do it using map() and lambda functions:
>>> map(lambda d: d['value'], l)
where l is the list.
I see this way "sexiest", but I would do it using the list comprehension.
Update:
In case that 'value' might be missing as a key use:
&...
When should I choose Vector in Scala?
It seems that Vector was late to the Scala collections party, and all the influential blog posts had already left.
6 Answ...
How to link Docker services across hosts?
...allows servers from multiple containers to connect to each other via links and service discovery . However, from what I can see this service discovery is host-local. I would like to implement a service that uses other services hosted on a different machine.
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Unescape HTML entities in Javascript?
...of a div reduces the XSS vulnerability, but it is still problematic in IE9 and Firefox.
function htmlDecode(input){
var e = document.createElement('textarea');
e.innerHTML = input;
// handle case of empty input
return e.childNodes.length === 0 ? "" : e.childNodes[0].nodeValue;
}
htmlDecode...
Kotlin secondary constructor
...defined in a companion object
Sometimes you want your constructor private and only a factory method available to clients. For now this is only possible with a factory method defined in a companion object:
class C private (s: Int) {
companion object {
fun new(s: String) = C(s.length)
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When should we use intern method of String on String literals
...in String pool, otherwise a new string object will be added in String pool and the reference of this String is returned.
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Pass mouse events through absolutely-positioned element
...operty that makes events "pass through" the element to which it is applied and makes the event occur on the element "below".
See for details: https://developer.mozilla.org/en/css/pointer-events
It is not supported up to IE 11; all other vendors support it since quite some time (global support was...
Programmatically creating Markdown tables in R with KnitR
I am just starting to learn about KnitR and the use of Markdown in generating R documents and reports. This looks to be perfect for a lot of the day to day reporting that I have to do with my job. However, one thing that I'm not seeing is an easy way to print data frames and tables using Markdown fo...
set DateTime to start of month
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A tip: always put DateTime.Now into a variable and use that if you are going to use the value repeatedly. There is a small chance of an error in case this code is executed exactly around midnight; the two calls to DateTime.Now may happen on each side of midnight causing p...
How do I properly clean up Excel interop objects?
I'm using the Excel interop in C# ( ApplicationClass ) and have placed the following code in my finally clause:
41 Answers
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