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Java ArrayList how to add elements at the beginning
...n element to the front of the list.
https://docs.oracle.com/javase/7/docs/api/java/util/LinkedList.html#addFirst(E)
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jQuery access input hidden value
...ave a width and height set to 0, and elements that have a hidden ancestor (api.jquery.com/hidden-selector)
– Daniel Liuzzi
Sep 14 '18 at 9:51
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How to access component methods from “outside” in ReactJS?
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Since React 0.12 the API is slightly changed. The valid code to initialize myChild would be the following:
var Child = React.createClass({…});
var myChild = React.render(React.createElement(Child, {}), mountNode);
myChild.someMethod();
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Tool to read and display Java .class versions
... to read the class file signature and get these values without a 3rd party API. All you need to do is read the first 8 bytes.
ClassFile {
u4 magic;
u2 minor_version;
u2 major_version;
For class file version 51.0 (Java 7), the opening bytes are:
CA FE BA BE 00 00 00 33
...where 0xCA...
Extract digits from a string in Java
...e characters that are not 0-9 (see docs: download.oracle.com/javase/6/docs/api/java/lang/… )
– Sean Patrick Floyd
Oct 27 '10 at 7:58
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Converting Integer to String with comma for thousands
...his implements the locale-specific grouping. docs.oracle.com/javase/7/docs/api/java/util/Formatter.html#dnum
– adam.r
Jan 28 '14 at 21:08
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Python UTC datetime object's ISO format doesn't include Z (Zulu or Zero offset)
...now())
'2014-05-17T01:18:47.944126+00:00'
Arrow has essentially the same api as datetime, but with timezones and some extra niceties that should be in the main library.
A format compatible with Javascript can be achieved by:
arrow.utcnow().isoformat().replace("+00:00", "Z")
'2018-11-30T02:46:40....
How can you use optional parameters in C#?
...rvices;
public void Foo(int a, int b, [Optional] int c)
{
...
}
In our API wrapper, we detect optional parameters (ParameterInfo p.IsOptional) and set a default value. The goal is to mark parameters as optional without resorting to kludges like having "optional" in the parameter name.
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Detect viewport orientation, if orientation is Portrait display alert message advising user of instr
... window.orientation deprecated developer.mozilla.org/en-US/docs/Web/API/Window/orientation
– kluverua
Feb 13 at 9:45
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How can I submit a form using JavaScript?
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@Jonathan What is the name of button you had? Coz, as per api.jquery.com/submit child elements of a form should not use input names or ids that conflict with properties of a form.
– keya
Sep 13 '18 at 14:53
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