Syntax refers to the set of rules that define how to write a correctly structured program in a language. It explicitly does not deal with the program's meaning or interpretation.

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30
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9answers
3k views

How do you explain a 'statement' in programming? [on hold]

I was trying to explain to someone the other day that it was necessary to put a ; at the end of each statement of your code. He didn't get it, and he would still write things like int i = 3 without ...
0
votes
2answers
120 views

Nested functions; allow or not? [closed]

Having programmed a whole lot in python, using nested functions is a good way to not clutter the namespace with small helper functions that are only used once. Now I'm programming in go, and upon ...
2
votes
2answers
52 views

How to create a 2D array at runtime in Ada? [closed]

In Ada programming, What is a best practice way to create a 2D array of a size that is specified by the user? I'm teaching myself Ada for work (after many years of C programming), and I'm having ...
-7
votes
3answers
157 views

Why different languages have different syntax? [duplicate]

Different programming language always/most of the time use different syntax. For example take PHP, Java and Python. In Php & Java semicolons are compulsory at the end of the line, yet Python ...
26
votes
1answer
2k views

Why does C++ not have a “pure” keyword for virtual functions?

I have always wondered why we code virtual void MyFunction() = 0; and not pure virtual void MyFunction(); Is there a reference for the basis of this decision?
3
votes
2answers
292 views

Why was the AT&T assembly syntax designed this way?

The AT&T assembly syntax, often called the GAS syntax, keeps surprising me. For example, its parameter order: mov $100,%eax /* Destination after source */ This just seems so counter-intuitive! ...
21
votes
2answers
2k views

Is there a performance benefit to using the method reference syntax instead of lambda syntax in Java 8?

Do method references skip the overhead of the lambda wrapper? Might they in the future? According to the Java Tutorial on Method References: Sometimes... a lambda expression does nothing but ...
2
votes
2answers
185 views

Make functions that imply other functions

I'm developing a game that often has repetitious code that I can't simplify. Example of what I do normally: Square object; GL11.glPushMatrix(); // Pushes a matrix stack down by one. This allows us ...
3
votes
0answers
241 views

How do you pronounce 'char' keyword? [closed]

So, with the possibility of this question being closed due to being non-productive as in the case of other pronunciation questions, I take the risk and ask it just because i have heard it said both ...
4
votes
2answers
301 views

Needs (in principle) C++ parenthesis around if statement condition?

In current C++ when body of if statements contain only one command then: Parenthesis around if condition are mandatory but block are optional. So, both examples are OK: if ( condition ) { return 0; ...
0
votes
1answer
59 views

Why do objects created with no assignment not generate a syntax error in Python?

While working on a Python project, I realized that during my editing I had left a string floating around in the middle of my code and it didn't generate an error. For example, these few lines execute ...
0
votes
2answers
483 views

Does any other language use the uniform initialization syntax found in c++? [closed]

Are there any other languages that use the new C++11 uniform initialization syntax thoroughly throughout the entire language, or is this entirely a C++ idiom at this point? I tried googling and ...
2
votes
1answer
156 views

What exactly is this Python statement doing?

I'm trying to port a very basic dual contouring algorithm written in Python (here) to C++. I'm not a Python programmer so some of the language syntax is a bit foreign to me. Specifically, this block ...
0
votes
2answers
141 views

BNF parsing rule for left associativity

Can someone please assist me with the following question. Write a BNF rule to parse into C -> E C -> E && E C -> E && E && E so that C generates as many E ...
12
votes
5answers
2k views

When does it make sense to compile my own language to C code first?

When designing an own programming language, when does it make sense to write a converter that takes the source code and converts it to C or C++ code so that I can use an existing compiler like gcc to ...
35
votes
12answers
4k views

Why do most programming languages have special keyword or syntax for declaring functions? [closed]

Most programming languages (both dynamically and statically typed languages) have special keyword and/or syntax that looks much different than declaring variables for declaring functions. I see ...
4
votes
3answers
522 views

Intentionally incorrect use of language features, specifically “ref” in C#, as a hint to colleagues

I recently came across a piece of code something like this (roughly C#): public bool ValidateStuff(ref ArrayList listOfErrors, Stuff thingsToValidate) { if (!thingsToValidate.isValid() ) { ...
0
votes
1answer
189 views

if else brackets on same line, best comment style? [closed]

I used to do this: // If the cat is black if ( $catColor == 'black' ) { ... } // Otherwise eat a taco else { ... } But I've more recently started to move toward this style of conditional ...
0
votes
4answers
104 views

Developing configuration syntax - best practise/rules/methods?

I am currently developing a small application, which checks if provided data meets certain requirements. The requirements are actually a long list, and might be changing, so I defined a syntax which ...
0
votes
2answers
373 views

Writing a superset of a programming language as a transcompiler

My idea is to write a superset of C# (but question is not language-specific), so that it source-to-source compiles (transcompiles) to C# itself (fall-through switch clauses, default method parameters ...
15
votes
2answers
4k views

Why does C use the asterisk for pointers?

I'm just now learning about C. I find it odd that the creators chose the asterisk (*) as the symbol for pointers rather than a symbol that actually looks like a pointer (->). Considering how ...
3
votes
2answers
647 views

Haskell syntax for type definitions: why the equality sign?

I am a bit confused by the choice of Haskell syntax for type definitions, like in data Foo = Bar Namely: does the equality sign here really mean an equality in some subtle sense, or is it just a ...
6
votes
7answers
1k views

Why isn't there a next operation on enums?

In most popular programming languages like Java and C# there is a way to define enums, which are essentially datatypes with a fixed set of values, e.g. DayOfWeek. The problem is, given a value, e.g. ...
31
votes
6answers
3k views

Why isn't testing a language a supported feature at the syntax level?

You can find an endless list of blogs, articles and websites promoting the benefits of unit testing your source code. It's almost guaranteed that the developers who programmed the compilers for Java, ...
0
votes
1answer
260 views

Syntax of passing lambda

Right now, I'm working on refactoring a program that calls its parts by polling to a more event-driven structure. I've created sched and task classes with the sced to become a base class of the ...
1
vote
0answers
43 views

What syntax should I use to execute functions in jQuery Terminal?

I want to add feature, to jQuery Terminal, that will allow to execute commands from the server. Right now it only have formatting syntax that look like this: [[<list of one letter styles> ; ...
0
votes
1answer
92 views

RFC syntax definition [closed]

I would like to bring our specifications to a better level of fine-grained definition of syntaxes, semantics and the like. I read my fair share of RFCs and just love the way they define things like ...
1
vote
1answer
187 views

Why some Javascript code needs to be written in different tags and not embedded within the same

When I was using the modernizr file, I came across this problem where in I need to source a file and call the script. <script src="js/modernizr-min.js"></script> <script> if ...
2
votes
4answers
5k views

Why do C# developers newline opening brackets? [closed]

I've spent most of the last several years working mainly with C# and SQL. Every programmer I've worked with over that time was in the habit of placing the opening brace of a function or control flow ...
6
votes
6answers
1k views

Would a “downcast if block” be a reasonable language feature?

Consider the following "if cast": class A { public void f1() { ... } } class B : A { public void f2() { ... } } A a = foo(); // might return A or B if ( a is B ) { // Inside block, ...
2
votes
3answers
977 views

Typical instantiation of new object - is there a way to avoid repetitious syntax?

When learning C# (and OO concepts more generally at the same time) something I found very distracting is exemplified by the following line: ExampleClass exampleObject = new ExampleClass(); It's the ...
1
vote
1answer
276 views

About AST construction in LL1 non recursive parser

I have implemented a LL1 parser in a non recursive approach with a explicit stack. The following algorithm is from the Dragon Book: set zp to point to the first symbol of w; set X to the top stack ...
4
votes
4answers
985 views

Why are scientific programming languages so weird? [closed]

It seems to me that programming languages meant for use in science and engineering are consistently weird compared to general-purpose languages. Some examples off the top of my head: In Matlab, each ...
24
votes
9answers
4k views

What is the benefit of having the assignment operator return a value?

I'm developing a language which I intend to replace both Javascript and PHP. (I can't see any problem with this. It's not like either of these languages have a large install base.) One of the things ...
3
votes
3answers
755 views

Syntactic Sugar for old languages

I first learned about the existence of syntactic sugar languages, like CoffeeScript and SASS while working in Rails. This got me thinking... why do we not have well-known (if any at all) syntactic ...
11
votes
7answers
666 views

What is idiomatic use of arbitrary blocks in C?

A block is a list of statements to be executed. Examples of where blocks come up in C are after a while statement and in if statements while( boolean expression) statement OR block if (boolean ...
2
votes
6answers
878 views

Stacking keywords on top of each other - poor style? [closed]

I have always wondered about this, especially in C/Java style languages. For example, consider the first 3 lines of this C# code: lock (serviceLock) using (var client = new ServiceClient()) try { ...
3
votes
2answers
696 views

Variable declaration versus assignment syntax

Working on a statically typed language with type inference and streamlined syntax, and need to make final decision about syntax for variable declaration versus assignment. Specifically I'm trying to ...
-1
votes
2answers
161 views

Languages like Tcl that have configurable syntax? [duplicate]

I'm looking for a language that will let me do what I could do with Clipper years ago, and which I can do with Tcl, namely add functionality in a way other than just adding functions. For example in ...
7
votes
3answers
272 views

Construct your solution logic in syntax or in a faster and more efficient mental model?

I am a newbie, studying programming and I came across this question today: How can I make sure that I'm actually learning how to program rather than simply learning the details of a language? A ...
8
votes
6answers
1k views

Optional semicolons

Most often, in a general-purpose imperative language - semicolons as statement-delimiters are either required, or completely disallowed (e.g. C and Python). However, some languages, like JavaScript, ...
2
votes
3answers
263 views

What language has integrated “list insertion” as part of code *syntax*?

Many programming languages permit natural manipulation of strings, and some languages permit the manipulations of lists too. More often then not (always?), these operations are done as procedure ...
1
vote
1answer
715 views

How to write a syntax checker [closed]

How is a syntax checker for a programming language written? I am guessing a grammar has to be written first. How to then proceed? Motivation I'm using a programming language (Apex for Salesforce) ...
3
votes
3answers
359 views

In Objective C, what English words can I conceptually associate to the symbols?

I'm learning Objective C (from a C# background) and am having difficulty understanding the unusual method signatures and am looking for a shortcut to make the learning curve less steep. When reading ...
0
votes
3answers
404 views

Any languages use the '=>' and '=<' operators? [closed]

I'm just curious if there are any programming languages that use the '=>' and '=<' operators for something. I wonder why these are not commonly used when their variant '<=' and '>=' are so ...
25
votes
1answer
20k views

Why there is no markdown for underline? [closed]

I am wondering why there is no markdown syntax for underline? I know that basic html tags can be embedded to achieve this but I am trying to understand why underline got omitted when bold and italics ...
0
votes
1answer
157 views

Truth condition testing with BOOL

BOOL myBool; myBool = YES; ... if (myBool) { doFoo(); } I have read that because there are instances where the above does not actually call the doFoo() function, it is best to instead always test ...
4
votes
5answers
840 views

Does relying on intellisense and documentation a lot while coding makes you a bad programmer? [duplicate]

Is a programmer required to learn and memorize all syntax, or is it ok to keep handy some documentation? Would it affect the way that managers look at coders? What are the downside of depending on ...
7
votes
4answers
947 views

What makes Common Lisp “big”?

I've been learning both Common Lisp and Racket, and one thing that I consistently hear is that Racket is a much "smaller" language than Common Lisp. I was wondering what this really meant. As far as I ...
15
votes
1answer
855 views

Dollar Sign Blues: Javascript and PHP

I grew up programming C++ and Java where everything was safe and beautiful. Compilers made sure to keep me in check if I ever strayed. Of course, everyone did a little Perl in college, but I didn't ...