Explanation:
Attribute Grammars were invented by Don Knuth as a way to unify all of the stages of compiling into one. An attribute grammar links syntax with semantics and have values that hold semantic information about the (non)terminal.
<em>They can perform several functions in specifying the syntax and semantics of a programming language, they can specify the context-sensitive aspects of the syntax of a language and operational semantics of a programming language.</em>
I hope you find this information useful and interesting! Good luck!
Answer:
Digital electronics involves 2 states which are abstracted as 0/1 or true/false.
Explanation:
Digital electronics involves 2 states. For TTL logic this corresponds to 0 Volt (0) or 5 Volt (1). Analyzing further, a digital waveform has a square shape (not necessarily a perfect square) with 2 levels denoting the two states, namely, true(1) or false(0). So a 0 or 1 is not actually absolute but 0 corresponds to voltage level below a threshold voltage whereas 1 corresponds to voltage level above a threshold voltage.
Answer:
Class is the correct answer for the above question.
Explanation:
In an object-oriented language, The class is a structure type template, which is used to define the structure but the class does not take memory when an object is created then it takes the memory of class type. For example, if a user-defined class of one member whose size is 4 bit if its store in memory. When a user creates an object, then the object size is 4 bit.
That's why the class is an only structure while an object is used to give the memory for class member and the member of the class also get executed by the object of that class. class have no existence if object is not created. so when a user wants to create a object, he needs to create the object by the help of class name because class is user defined data type and object is variable of that class.
Then the answer of the above question is that object is created with the help of class which is described above.
Answer:
The output is attached below
Explanation:
d = {}
while True:
line = input("Enter line: ")
if len(line)==0:
break
token = line.split(' ')
for var in token:
try:
if len(var)==0:
continue
count = d[var]
d[var] = count + 1
except KeyError:
d[var] = 1
pass
for word in sorted(d):
print(word , d[word])
------------------
Answer:
Bitmap images can contain any number of colors but there are four main categories: Line-art. These are images that only contain two colors, usually black and white.
