Where is the original literature for the specification of an Associative Array ADT?

I’m looking for the formal specification for the Abstract Data Type Algebra for the Associative Array, Associative List (AKA multimap), and other similar ADT to cite for use in a data specification similar to Binary JSON. The Wikipedia Associative Array entry uses non-standard math terminology and their sources are all secondary sources with no original sources. There is an algebra for the Dictionary and it starts with Let x be a set and it defines operations on that set. Who invented the dictionary and when? It should be pretty old, possible from the Journal of the Association of Computer Machinery or similar publication.

Why do scrollbars revert to original scroll distance when mouse is dragged sideways too far?

When dragging the scrollbar using the mouse, the contents of the scrollpane move up and down as the bar moves with the mouse. But if you keep the mouse button held down, and move the pointer sideways for about 100 pixels (tested on Windows machines), the scrollbar goes back to its location before being dragged, and the scrollpane with it. Moving the mouse closer again will make the scrollbar follow the mouse again. Is there any benefit or explanation for this behaviour from a UX point of view?

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by: adamalsafi
Created: —
Category: eBook
Viewed: 136

reporte original y duplicado Crystal report c#

Hola gente estoy tratando de generar un reporte con la leyenda “original/duplicado” para mostrarlo en un mismo crystal report viewer pero no se como armarlo. De momento se me habia ocurrido hacerlo con un reporte que contenga dos subinformes (uno “original y el otro “duplicado”) pero no se me están visualizando bien. La idea era poner que la seccion 2 se mostrara en una nueva pagina pero el problema que ocurre es que los “detalles” del reporte también me los pone en diferentes páginas Adjunto imagen del diseño del reporte “padre” introducir la descripción de la imagen aquí

Adjunto imagen de como se ve el ejemplo: introducir la descripción de la imagen aquí Como se puede ver en el ejemplo Como se puede ver en el ejemplo.. comienza mostrando todo el reporte pero las lineas del pedido (cada producto) me lo separa en una pagina nueva. Una vez que termina de asignarle una pagina a cada producto comienza con el otro reporte y hace lo mismo. Conclusión genera 10 hojas diferentes para un reporte duplicado con 3 productos cada uno.. Alguna sugerencia?? no se bien como puedo resolverlo y se me ocurrió plantearlo asi.

La idea es tratar de que cuando cargue el reporte en el crystal report viewer, el cliente puede ver todo lo que va a imprimir y con su cantidad de hojas, es decir mostrarle una vista previa del original y duplicado

Original Handmade Acrylic Painting – Affiliates Special for $125

Price is $ 1125. I’m selling a one of a kind original handmade acrylic painting. The painting was created in 2013. And is a 24 inches x 30 inches painting. This is a physical product that will be shipped to your address of choice. I’m happy to say this painting is on sale! First come first serve!

by: Ron991
Created: —
Category: Art & Design
Viewed: 131

How can i protect original product images?

I enabled watermark funtion of Magento, but original files still accessable from url without watermark.


Cached image url with watermark


Original image url without watermark:


So, if someone remove /cache/df484df48ez74849c15sd4f7780/ from url can access to original photo without watermark to steal images.

How can i protect my original images?