Monotonic predicates can be debugged by applying declarative reasoning.
In pure Prolog, a programming mistake can lead to one or all of the following phenomena:
the predicate incorrectly succeeds in a case where it should fail
the predicate incorrectly fails in a case where it should succeed
t...
It is sometimes argued that, for the sake of efficiency, we must accept the use of non-monotonic constructs in real-world Prolog programs.
There is no evidence for this. Recent research indicates that the pure monotonic subset of Prolog may not only be sufficient to express most real-world programs...
//Example 1
int[] array = { 1, 5, 2, 10, 7 };
// Select squares of all odd numbers in the array sorted in descending order
IEnumerable<int> query = from x in array
where x % 2 == 1
orderby x descending
select x ...
To interact with WebElements in a webpage, first we need to identify the location of the element.
By is the keyword available in selenium.
You can locate the elements By..
By ID
By Class Name
By TagName
By Name
By Link Text
By Partial Link Text
By CSS Selector
By XPath
Using JavaScript
...
Option Compare Binary
Binary comparison makes all checks for string equality within a module/class case sensitive. Technically, with this option, string comparisons are performed using sort order of the binary representations of each character.
A < B < E < Z < a < b < e < z
...
set can also be invoked with just one argument. When called with just one argument, it returns the contents of that argument.
% set x 235
235
% set x
235
List<Integer> nums = Arrays.asList(1, 2, 3);
List<String> strings = nums.stream()
.map(Object::toString)
.collect(Collectors.toList());
That is:
Create a stream from the list
Map each element using Object::toString
Collect the String values into a List using Collectors...
The chan-signal crate provides a solution to handle OS signal using channels, altough this crate is experimental and should be used carefully.
Example taken from BurntSushi/chan-signal.
#[macro_use]
extern crate chan;
extern crate chan_signal;
use chan_signal::Signal;
fn main() {
// S...
The nix crate provides an UNIX Rust API to handle signals, however it requires using unsafe rust so you should be careful.
use nix::sys::signal;
extern fn handle_sigint(_:i32) {
// Be careful here...
}
fn main() {
let sig_action = signal::SigAction::new(handle_sigint,
...
Unlike emails, JIDs were defined with Internationalization (i18n) in mind using the
Preparation, Enforcement, and Comparison of Internationalized Strings (PRECIS) framework. PRECIS (defined in RFC 7564), is a framework for comparing strings safely in a variety of contexts. For instance, imagine you...
Adding a footer is not natively possible. Luckily, we can make use of jQuery and CSS to add a footer to the slides of an ioslides presentation rendered with knitr.
First of all we have to include the jQuery plugin. This is done by the line
<script src="https://ajax.googleapis.com/ajax/libs...
Below code is simple java program using selenium.
The journey of the below code is
Open Firefox browser
Open google page
Print title of Google page
Find the search box location
Pass the value as Selenium in the search box
Submit the form
Shutdown the browser
package org.openqa.selenium....
Sometimes one has to work with pages that are not using jQuery while most developers are used to have jQuery handy.
In such situations one can use Chrome Developer Tools console (F12) to manually add jQuery on a loaded page by running following:
var j = document.createElement('script');
j.onload ...
One interesting thing is the ability to add you own comments into Visual Studio Intellisense. So you can make your own written functions and classes self-explanatory. To do so, you must type the comment symbol three times the line above your function.
Once done, Visual Studio will automatically add...
In VB.NET, every variable must be declared before it is used (If Option Explicit is set to On). There are two ways of declaring variables:
Inside a Function or a Sub:
Dim w 'Declares a variable named w of type Object (invalid if Option Strict is On)
Dim x As String 'Declares a variable named ...
Static method:
Dim parseMethod = GetType(Integer).GetMethod("Parse",{GetType(String)})
Dim result = DirectCast(parseMethod.Invoke(Nothing,{"123"}), Integer)
Instance method:
Dim instance = "hello".ToUpper
Dim method = Gettype(String).GetMethod("ToUpper&quo...
ArrayList is one of the inbuilt data structures in Java. It is a dynamic array (where the size of the data structure not needed to be declared first) for storing elements (Objects).
It extends AbstractList class and implements List interface. An ArrayList can contain duplicate elements where it mai...
