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Topic: Statement block


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In the News (Thu 16 Feb 12)

  
  stmt   (Site not responding. Last check: 2007-10-15)
A null statement is useful to carry a label just before the } of a compound statement and to supply a null body to an iteration statement such as a while statement (_stmt.while_).
Transfer out of a loop, out of a block, or back past an ini- tialized variable with automatic storage duration involves the destruction of variables with automatic storage duration that are in scope at the point transferred from but not at the point transferred to.
6.6.2 The continue statement [stmt.cont] 1 The continue statement shall occur only in an iteration-statement and causes control to pass to the loop-continuation portion of the small- est enclosing iteration-statement, that is, to the end of the loop.
www.ceng.metu.edu.tr /docs/cd2/stmt.html   (2576 words)

  
 PEP 340 -- Anonymous Block Statements
I should clarify that using a generator to "drive" a block statement is really a separable proposal; with just the definition of the block statement from the PEP you could implement all the examples using a class (similar to example 6, which is easily turned into a template).
Block iterators also have the opportunity to execute the controlled code more than once (or not at all), catch exceptions, or receive data from the body of the block statement.
When a generator is used as a block iterator, the yield statement tells the Python interpreter to suspend the block iterator, execute the block statement body, and resume the block iterator when the body has executed.
www.python.org /dev/peps/pep-0340   (2365 words)

  
 [Chapter 4] 4.3 Statements
Every simple statement must end in a semicolon, unless it is the final statement in a block.
Compound statements are defined in terms of blocks, not statements, which means that braces are required.
statement repeatedly executes a block as long as its conditional expression is true.
members.fortunecity.com /adara7053jwnd/perlnut/ch04_03.htm   (581 words)

  
 Perl 5 by Example: Statements   (Site not responding. Last check: 2007-10-15)
A statement block is a group of statements surrounded by curly braces.
Using a statement block does not change the program execution in any way; it simply is a visual device to mark sections of code and a way to create local variables.
Statement blocks are also good to use when you temporarily need to send debugging output to a file.
affy.blogspot.com /p5be/ch06.htm   (2494 words)

  
 Statement
Statements define the flow of a script, known as "program flow." A statement, like a fully grammatical English sentence, is made up of smaller expressions which, altogether, evaluate into a cogent meaning.
Blocks of statements are used, for example, in functions and conditionals.
In similar fashion as the do...while statement, the while statement executes its statement block as long as the condition is true.
www.sis.pitt.edu /~qsang/course/2000/js_2_c.html   (868 words)

  
 ISO/IEC 14882:1998(E) -- C++ -- Statements
statement is the value of the declared variable if it has integral or enumeration type, or of that variable implicitly converted to integral or enumeration type otherwise.
statement causes control to be transferred to one of several statements depending on the value of a condition.
statement shall occur only in an iteration-statement and causes control to pass to the loop-continuation portion of the smallest enclosing iteration-statement, that is, to the end of the loop.
library.n0i.net /programming/c/cp-iso/stmt.html   (2209 words)

  
 GAWK:awk_language:statements   (Site not responding. Last check: 2007-10-15)
A conditional statement in awk uses the same syntax as for the 'C' programming language: the 'if' keyword, followed by an expression in parentheses, followed by a statement--or block of statements enclosed within braces ({})--which will be executed if the expression is true but skipped if it's false.
The 'continue' statement is useful in a compound (block) statement; when executed, it effectively skips the rest of the block so that the increment-expression (only for for-loops) and loop-termination expression can be re-evaluated.
The 'break' statement, when executed, effectively skips the rest of the block and also treats the test expression as if it were false (instead of actually re-evaluating it).
avmp01.mppmu.mpg.de /internet_product_suite/HTML_GAWK/gawk8.htm   (849 words)

  
 Day 8 -- More Control Structures
statement if you have a large number of loop initializers or loop iterators, because statements that contain a large number of comma operators are difficult to read.
This statement tells the Perl interpreter to terminate executing the loop and to continue with the first statement after the loop, which is line 18.
statement must be followed by a statement block, which is a collection of zero or more statements enclosed in brace characters.
www.fortunecity.com /greenfield/bnfl/247/peral5/ch8.htm   (5215 words)

  
 CHAPTER 7 - Blocks and Statements
There are two primary blocks defined for a T program: the main block, which is explained in section (§7.1), and statement blocks which are explained in section (§7.2).
statement in the main block is executed or the end of the main block is reached (or a run-time error is encountered).
The scope of a variable declared in the main block is from its declaration point to the end of the main block.
www.cs.unh.edu /~pjh/courses/cs712/2006/T_language_spec/chapter7.html   (1104 words)

  
 Decision Making and Branching (if Statement) by Sachin Mehta
It is basically a two-way decision statement and is used in conjunction with an expression.
The if statement may be implemented in different forms depending on the complexity of the conditions to be tested.
As soon as a true condition is found, the statement associated with is executed and the control is transferred to the statement x (skipping the rest of the ladder).
www.boloji.com /computing/ccplus/cc005.htm   (619 words)

  
 Byte of Python:Control Flow - Text
statements must also have a colon at the end of the logical line followed by their corresponding block of statements, with proper indentation.
statement is an example of what is called a looping statement, where it repeatedly executes (loops) a block of statements until a condition is met.
statement is used to tell Python to skip the rest of the statements in the current block and continue to the next iteration of the loop.
www.swaroopch.info /text/Byte_of_Python:Control_Flow   (1479 words)

  
 Statement Blocks
The statement block is simply a group of commands that are executed together.
This block is grouped by enclosing the commands within curly braces ({}).
Perl will execute each statement in a statement block from beginning to end as a group.
www.extropia.com /tutorials/perl_cgi/perl_statement_blocks.html   (112 words)

  
 Javanotes 5.0, Section 3.1 -- Blocks, Loops, and Branches
That is, it consists of a sequence of statements enclosed between a pair of braces, "{" and "}".
An empty block consists of nothing but an empty pair of braces.) Block statements usually occur inside other statements, where their purpose is to group together several statements into a unit.
There is one place where a block is required: As you might have already noticed in the case of the main subroutine of a program, the definition of a subroutine is a block, since it is a sequence of statements enclosed inside a pair of braces.
math.hws.edu /javanotes/c3/s1.html   (1972 words)

  
 Statement (programming) - Wikipedia, the free encyclopedia
In most languages statements contrast with expressions in that statements do not return results and are executed solely for their side effects, while expressions always return a result and often do not have side effects at all.
In languages which mix imperative and functional styles, such as the Lisp family, the distinction between expressions and statements is not made: even expressions executed in sequential contexts solely for their side effects and whose return values are not used are considered 'expressions'.
Most programming languages do not allow new statements to be created during program execution (Snobol 4 is a language that does), or existing statements to be modified (Lisp is well known for supporting self modifying code).
en.wikipedia.org /wiki/Statement_(programming)   (308 words)

  
 Conditionals - Perl.
If the expression had a false value, then that statement block would not be executed and the script would go onto the next line of code.
ELSIF statements can be used when you have more than one expression to evaluate and to select the correct statement block to execute.
When any statement block within the control structure is executed, the control is taken out of the IF area and continues onto the next line of code.
www.htmlite.com /perl018.php   (950 words)

  
 Java conditional IF, ELSE and SWITCH
Note that the switch keyword is followed by a data type of byte, short, char or int in parentheses (you cannot use it to test object variables or decimals).
The comparand in a case statement, must be a constant or literal value, no expressions are allowed.
Remember to include a break, throw or return statement after the statement/s that belong to each case, otherwise the following case statements are also evaluated.
www.spiritone.com /~gus/java/programming_conditional.html   (301 words)

  
 Block Structure Elements of VHDL   (Site not responding. Last check: 2007-10-15)
The block statement begins with a label (see Identifier) which is not optional, followed by a colon and the keyword block.
After the block header may optionally appear a number of Block Declarative Items, which are used to declare elements needed within the body of the block statement.
A block statement can represent an independent portion of a design, and communicate with its environment using its own port map and generic map, as indicated in the Block Header syntax.
www.eece.unm.edu /faculty/pollard/block.html   (376 words)

  
 Synopsis 4: Blocks and Statements - perl6:
statements in the block, not by the nature of the block itself.
block sees the lexical scope in which it was defined, but its caller is the dynamic location that threw the exception.
blocks be able to see transient variables in their current lexical scope, so their cloning status depends at least on the cloning status of the block they're in.
dev.perl.org /perl6/doc/design/syn/S04.html   (5053 words)

  
 UserActive PHP Tutorials
Notice that the block of code (the echo statement) that is within the curly brackets was not executed.
In this example, the block of code within the curly brackets was executed because the conditional statement evaluated to true.
The next if statement evaluates to true, causing the text "You are between 30 and 50 years of age." to be displayed in the Preview window.
www.useractive.com /learning/php/phptut07.php3   (1853 words)

  
 ECMAScript 4 Statements   (Site not responding. Last check: 2007-10-15)
statement may be hoisted to the nearest enclosing regional scope.
statement can only be used inside a function or constructor.
statement cannot have an expression if used inside a constructor or a setter.
www.mozilla.org /js/language/es4/core/statements.html   (267 words)

  
 Covered: /ptmp/release/covered-0.4.8/src/race.c File Reference
If a signal is assigned in more than one statement block, both statement block's need to be removed from coverage consideration and a possible warning/error message generated to the user.
Once it is found, a pointer to the head statement block is returned to the calling function.
If it is not found, a value of NULL is returned, indicating that the statement block could not be found for the given statement.
covered.sourceforge.net /devel/race_8c.html   (2086 words)

  
 Expressions
A statement forms a complete unit of execution and is terminated with a semicolon (;).
Use the do-while statement to loop over a block of statements while a boolean expression remains true.
The for statement loops over a block of statements and includes an initialization expression, a termination condition expression, and an increment expression.
www2.hawaii.edu /~luim/feb6ex6.htm   (555 words)

  
 SyncLock Statement
Block of statements that are to execute when the lock is acquired.
A statement block protected by an exclusive lock is sometimes called a critical section.
The SyncLock block acquires and releases the exclusive lock by calling the Enter and Exit methods of the Monitor class in the System.Threading namespace.
msdn2.microsoft.com /en-us/library/3a86s51t.aspx   (710 words)

  
 Statement block - Wikipedia, the free encyclopedia
In computer programming, a statement block (or code block) is a section of code which is grouped together, much like a paragraph; such blocks consist of one, or more, statements.
Blocks often define the scope of the identifiers used within.
In languages such as Smalltalk, blocks are objects in their own right, extended with a reference to their environment of definition, i.e.
en.wikipedia.org /wiki/Statement_block   (325 words)

  
 Expressions and Statements
Quite simply, a statement is an expression that is followed by a semicolon, and a statement block is a list of statements enclosed in braces.
When a statement block is executed, DScript first creates a new block scope (to keep variables local), and then executes each statement in the order listed.
A compound statement is a sequence of reserved words that combine expressions and statements into a logical group that performs a specific task.
www.vanguardsw.com /dshelp/dsc00137.htm   (561 words)

  
 IDL Statement Syntax
Notes: A while statement may be executed 0 or more times depending on the value of the expression.
The statement corresponding to the first match is executed.
Only the case statement uses the plain begin/end pair to execute multiple statements for a match (the endcase is not really one of the end statements).
fermi.jhuapl.edu /s1r/idl/idl_syntx.html   (769 words)

  
 lock Statement (C#)
The lock keyword marks a statement block as a critical section by obtaining the mutual-exclusion lock for a given object, executing a statement, and then releasing the lock.
lock calls Enter at the beginning of the block and Exit at the end of the block.
As long as the lock statement is present, the statement block is a critical section and
msdn2.microsoft.com /en-us/library/c5kehkcz.aspx   (253 words)

  
 DO statement
The test occurs at the bottom of the loop, and the statement block is executed again if the expression is true, for the WHILE case, or false, for the UNTIL case.
If you use a conditional clause on the LOOP statement, the condition is evaluated at the bottom of the loop, meaning that the statement block will be executed at least once.
In both of these cases, the statement block will be executed at least once; the loop test is performed at the bottom of the loop.
www.signature.net /ib/do.htm   (733 words)

  
 GPL p8
Recall in p7 that when parsing a statement block you created a new Statement_block and pushed it onto the statement block stack when you parsed the "{" and when you parsed the "}" you popped it off the stack and sent it up the parse tree (i.e.
This way each statement you parsed (while inside the block) could be inserted into the Statement_block at the top of the stack.
Thus you will be filling in the statement block that was created in the forward statement instead of creating a new one.
www.ecst.csuchico.edu /~tyson/gpl/p8.html   (835 words)

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