The two operands (1 and 3) are integers, therefore integer arithmetic (division here) is used. Declaring the result variable as double just causes an implicit conversion to occur after division. Integer division of course returns the true result of division rounded towards zero. The result of 0.333… is thus rounded down to 0 here. (Note that the processor … Read more
An established connection was aborted by the software in your host machine That is a boiler-plate error message, it comes out of Windows. The underlying error code is WSAECONNABORTED. Which really doesn’t mean more than “connection was aborted”. You have to be a bit careful about the “your host machine” part of the phrase. In … Read more
If they do, when do they use it so I can understand it better and know when to use it. A final class is simply a class that can’t be extended. (It does not mean that all references to objects of the class would act as if they were declared as final.) When it’s useful to declare a class … Read more
Most of the roles you see were defined as part of ARIA 1.0, and then later incorporated into HTML via supporting specs like HTML-AAM. Some of the new HTML5 elements (dialog, main, etc.) are even based on the original ARIA roles. http://www.w3.org/TR/wai-aria/ There are a few primary reasons to use roles in addition to your … Read more
One-to-one: Use a foreign key to the referenced table: You must also put a unique constraint on the foreign key column (addess.student_id) to prevent multiple rows in the child table (address) from relating to the same row in the referenced table (student). One-to-many: Use a foreign key on the many side of the relationship linking back … Read more
As mentioned in What’s the difference between Scripting and Programming Languages? article: Basically, all scripting languages are programming languages. The theoretical difference between the two is that scripting languages do not require the compilation step and are rather interpreted. For example, normally, a C program needs to be compiled before running whereas normally, a scripting language like … Read more
There are mainly three types of variables in MySQL: User-defined variables (prefixed with @):You can access any user-defined variable without declaring it or initializing it. If you refer to a variable that has not been initialized, it has a value of NULL and a type of string.SELECT @var_any_var_name You can initialize a variable using SET or SELECT statement:SET @start = 1, @finish = … Read more
To get the contents of the attribute data-id (like in <a data-id=”123″>link</a>) you have to use or .data() (if you use newer jQuery >= 1.4.3) and the part after data- must be lowercase, e.g. data-idNum will not work, but data-idnum will.
Probably the best approach is to use the PDF.JS library. It’s a pure HTML5/JavaScript renderer for PDF documents without any third-party plugins. Online demo: https://mozilla.github.io/pdf.js/web/viewer.html GitHub: https://github.com/mozilla/pdf.js
May be this will help you.