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ãMETAL STARBURST WALL CLOCKãBattery powered, silent movement, accurate time, integrated movement back cover, protect the movement, extend the service life.
ãBATTERY OPERATEDãPowered by 1 x AA battery (not included), so no need to worry about electrics, wires or expensive contractor costs. Easy to Install, this outside wall clock can be fixed to any wall, fence post or in your home.
ãFORGET THE ANNOYING TICKINGãThe silent outdoor wall clock using premium movement to make sure will not disturb people around and you will never hear ticktack sounds like other exquisite clock.Also this clock is a great choice for your indoor decoration.
ãEASY TO INSTALL amp; USEãCome with a very easy installation kit included, securely hangs on your wall within a few seconds. Powered by 1*AA battery (not included).For longer use, do not use Alkaline battery or high power battery, they will affect the accuracy of time.
ãSERVICE AND GUARANTEEãDSJGVN is fully responsible for all DSJGVN products. If for any reason you are not satisfied with your purchase, please contact us because our number one goal is customer satisfaction and we are committed to making it right for you.
This garden clock is ideal for gardens and patio areas as a feature piece that's also practical with its functional and easy to read clock face. will look attractive in any garden environment"br"
"p"This garden clock is ideal for gardens and patio areas as a feature piece that's also practical with its functional and easy to read clock face. will look attractive in any garden environment.
Mute clock movement: The high-quality clock movement ensures smooth, mute, stable performance
Product Style: Metal Starburst Wall Clock
Display type: Arabic Numerals
Power: AA battery (Not included)
Movement quality: meet CE, RoHS environmental protection requirements
Package Including: 1* Wall Clock
Applicable places: living room, bedroom, study room, outdoor, dining room, commercial space
Our Customer Care Team is available and ready to assist you. Simply email us with your Order# and we'll get back to you within 24 hours."br"I wish you good health and a happy life!!!
"br"Notice:"br"*Actual color may be slightly different from the image due to different monitor and light effect"br"*Please allow 1-104cm deviation due to manual measurement
In Racket, programmers define their own loops with powerful macros. Indeed, these macros are so powerful that programmers make entire domain-specific languages as libraries. No tools, no Makefiles required.
Racket allows programmers to add new syntactic constructs in the same way that other languages permit the formulation of procedures, methods, or classes. All you need to do is formulate a simple rule that rewrites a custom syntax to a Racket expression or definition.
Little macros can particularly help programmers with DRY where other features can’t. The example on the leftabove shows how to define a new syntax for measuring the time a task takes. The syntax avoids the repeated use of lambda. Note also how the macro is exported from this module as if it were an ordinary function.
Macros work with these tools. The example on the leftabove shows the implementation of a small number-guessing game. It is implemented in the GUI dialect of Racket, and demonstrates a number of language features.
While Racket is a functional language, it has offered a sub-language of classes and objects, mixins and traits, from the beginning. The macro-based implementation of a Java-like class system lives in a library and does not need any support from the core language. A Racket programmer can thus combine functional with object-oriented components as needed.
Some languages convey ideas more easily than others. And some programming languages convey solutions better than others. Therefore Racket is a language for making languages, so that a programmer can write every module in a well-suited languages.
Often an application domain comes with several languages. When you need a new language, you make it—on the fly. Open an IDE window; create a language right there, with just a few keystrokes; and run a module in this new language in a second IDE window. Making new languages really requires no setup, no project files, no external tools, no nothing.
Racket comes with its own IDE, DrRacket (née DrScheme), and it sports some unique features. For example, when a programmer mouses over an identifier, the IDE draws an arrow back to where it was defined.
A programmer immediately benefits from DrRacket while using an alternative language, say Typed Racket. Racket macros, even complex ones and those used to make new languages, record and propagate a sufficient amount of source information for DrRacket to act as if it understood the features of the new language.
Racket programmers usually love parentheses, but they have empathy for those who need commas and braces. Hence, building languages with conventional surface syntax, like that of datalog, is almost as easy as building parenthetical languages.
Racket’s ecosystem comes with parsing packages that allow developers to easily map any syntax to a parenthesized language, which is then compiled to ordinary Racket with the help of Racket’s macro system. Such a language can also exploit the hooks of the IDE framework, so that its programmers may take advantage of Racket’s IDE.