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lenses, fclabels, data-accessor - which library for structure access and mutation is better
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There are at least 4 libraries that I am aware of providing lenses.
The notion of a lens is that it provides something isomorphic to
data Lens a b = Lens (a -> b) (b -> a -> a)
providing two functions: a getter, and a setter
get (Lens g _) = g
put (Lens _ s) = s
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Maximum size of an Array in Javascript
...round. I have one array to store data to display, and another which stores ID's of records that have been shown.
7 Answers
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Two inline-block, width 50% elements wrap to second line [duplicate]
I would like to have two columns of 50% width space, and avoid floats.
So i thought using display:inline-block .
5 Answers...
SecurityError: Blocked a frame with origin from accessing a cross-origin frame
...ck scripts trying to access a frame with a different origin.
Origin is considered different if at least one of the following parts of the address isn't maintained:
protocol://hostname:port/...
Protocol, hostname and port must be the same of your domain if you want to access a frame.
NOTE: Internet E...
Remove CSS class from element with JavaScript (no jQuery) [duplicate]
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The right and standard way to do it is using classList. It is now widely supported in the latest version of most modern browsers:
ELEMENT.classList.remove("CLASS_NAME");
remove.onclick = () => {
const el = document.querySelector('#el');
if (el.classList.contains("red")) {
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Adding div element to body or document in JavaScript
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Try this out:-
http://jsfiddle.net/adiioo7/vmfbA/
Use
document.body.innerHTML += '<div style="position:absolute;width:100%;height:100%;opacity:0.3;z-index:100;background:#000;"></div>';
instead of
document.body.innerHTML = '<div...
How to hide element using Twitter Bootstrap and show it using jQuery?
...p 4.x
Bootstrap 4.x uses the new .d-none class. Instead of using either .hidden, or .hide if you're using Bootstrap 4.x use .d-none.
<div id="myId" class="d-none">Foobar</div>
To show it: $("#myId").removeClass('d-none');
To hide it: $("#myId").addClass('d-none');
To toggle it: $("#...
Which data type for latitude and longitude?
...ypes and geometric types.
The geometry and geography data types are provided by the additional module PostGIS and occupy one column in your table. Each occupies 32 bytes for a point. There is some additional overhead like an SRID in there. These types store (long/lat), not (lat/long).
Start read...
How to check if an NSDictionary or NSMutableDictionary contains a key?
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@fyodor an nsdictionay will throw an NSInvalidArgumentException if you attempt to insert a nil value, so there should never be a case where a key exists, but the corresponding value is nil.
– Brad The App Guy
May 6 '10 at 22:50
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Mocking static methods with Mockito
...ForTest(DriverManager.class)
public class Mocker {
@Test
public void shouldVerifyParameters() throws Exception {
//given
PowerMockito.mockStatic(DriverManager.class);
BDDMockito.given(DriverManager.getConnection(...)).willReturn(...);
//when
sut.exe...