The CADR is basically a reflection of the air flow (CFM) times the efficiency of the air filter. So, if an air filter has 200 cfm and 100% efficiency the CADR would be 200. If the air filter has 200 cfm and 75% efficiency the CADR would be 150. The CADR is a good way to keep from being misled in marketing messages.
One of more powerful features of Scheme is its ability to process 'Lists' of data. The car , which stands for "Contents of Address Register", holds the first value of the list, while the cdr (stands for "Contents of Data Register") contains the next cons cell, with its own car and cdr .
The append function joins two lists together to make one.
The append function is built into Scheme. It concatenates two lists, that is to say, given two lists list1 and list2 it produces a new list which starts with the same elements as list1 and finishes with those of list2 .reverse. reverse returns a reversed copy of a list. There's an easy (but slow) way to define reverse in terms of append . We just take the first element off the list, reverse the rest of the list, and append the first element to the end of the list.
The two values in a cons cell are called the car and the cdr. The car function is used to access the first value and the cdr function is used to access the second value.
"Pro/for or against something." Do "pro" and "for" have the same meaning ? While they have the same meaning, they are not used the same way. One would not use "pro" as the opposite of "against"; one would only use "for".
The phrase 'pros and cons' is an abbreviation of the Latin phrase pro et contra, 'for and against', where “pros” are for the plus points and “cons” are the negative ones. It has been in use in the abbreviated form since the 16th century, according to the Oxford English Dictionary.
2 Answers. Yes, the two terms imply the same. 'Pros and cons' comes from Latin pro et contra meaning 'for and against'. It actually means 'the positive and negative aspects of an argument'.
Use these guidelines to make better pro-con lists.
- Use for the Right Decisions. Use pro-con lists for Go/No-Go, Continue/Cancel or other decisions with a clear Yes/No answer.
- Ask the Right Question.
- Use Differences Only.
- Make It Personal.
- Drill In.
- Avoid Duplicates.
- Avoid Compound Statements.
- Use Categories.
The pros and cons of something are its advantages and disadvantages, which you consider carefully so that you can make a sensible decision. They sat for hours debating the pros and cons of setting up their own firm. Motherhood has both its pros and cons.
The car and cdr functions are used for splitting lists and are considered fundamental to Lisp. Since they cannot split or gain access to the parts of an array, an array is considered an atom. Conversely, the other fundamental function, cons , can put together or construct a list, but not an array.
Advantages and disadvantages of i.C.T
- Communication - Speed / time – money can be saved because it's much quicker to move information around.
- Globalization - Video conferencing saves money on flights and accommodation.
- Cost effectiveness - It feels free to send an email (although it isn't); it's without doubt cheaper than phone calls.
In case anyone wants to know, CAR stands for Contents of the Address part of Register number, and CDR stands for Contents of the Decrement part of Register number.
map is one of the CommonHigherOrderFunctions which transforms a list by applying a function to each of its elements. Its return value is the transformed list. There are many variations on the map function, the one described here is called map in Scheme, and mapcar in most Lisps.
setf is actually a macro that examines an access form and produces a call to the corresponding update function. Given the existence of setf in Common Lisp, it is not necessary to have setq, rplaca, and set; they are redundant. They are retained in Common Lisp because of their historical importance in Lisp.
Description: terpri outputs a newline to output-stream. fresh-line is similar to terpri but outputs a newline only if the output-stream is not already at the start of a line. If for some reason this cannot be determined, then a newline is output anyway.
The first is the name of the function, the second is a list of parameters for the function, and the third is the body of the function -- i.e. LISP instructions that tell the interpreter what to do when the function is called. The name of a user-defined function can be any symbol.
common-lisp The do loop
- varlist is composed of the variables defined in the loop, their initial values, and how they change after each iteration. The 'change' portion is evaluated at the end of the loop.
- endlist contains the end conditions and the values returned at the end of the loop.
Lisp: COND. IV. COND. COND is an unusual function which may take any arbitrary number of arguments. Each argument is called a clause, and consists of a list of exactly two S-expressions.
Traditionally, LISP can be interpreted or compiled -- with some of each running at the same time. Compilation, in some cases, would be to a virtual machine like JAVA. LISP is a general purpose programming language, but rarely used as such anymore.
In Lisp, an unescaped semicolon (' ; ') starts a comment if it is not within a string or character constant. The comment continues to the end of line. The Lisp reader discards comments; they do not become part of the Lisp objects which represent the program within the Lisp system.
An AutoLISP file must be loaded into the AutoCAD program before it can be ran.
- Open an AutoLISP (LSP) file and make sure the text editor is active.
- In Visual LISP, do one of the following:
- Start the AutoLISP function by doing one of the following:
- Respond to any prompts or dialog boxes that are displayed.
It takes two arguments, an element and a list and returns a list with the element inserted at the first place.
