![]() The Executor will reject any attempt to manipulate the loop variable within the loop body as illegal interference with the loop control mechanism (from version 3.25-10 on before it just hadn't an impact on the loop control).(Hint: you may easily transmute a FOR loop of counting type into an equivalent WHILE loop construct.) the increment) must always be an integer literal, otherwise it wouldn't be a predictable counting and you should use a WHILE loop instead. Start and end value may be arbitrary expressions (though they should compute to integer values), whereas the step width (i.e.Now, this might be the complete diagram to compute the average (or mean value) of the numbers inserted to the valueArray, the two similar FOR loops are coloured light-blue: If you want to add instructions after the loop (instead of to the loop body) then first select the upper or left outer part of the loop element: Therefore first select the empty element and then select an arbitrary type of element to insert it.Ħ. Add instructions to the body of your loop. Then commit the data by clicking the "OK" button or pressing key combination. Fill in some helpful description in the comment area if you like - this will be the loop comment, obviously. Synchronisation between the upper text fields and the larger text area starts as soon as you click into one of the active fields or toggle the "Full Text Editing" checkbox.Ĥ. the set of form fields including the labels will alter as the next screenshot demonstrates. a FOR-IN loop), the radio buttons will switch and the upper part of the editor will change its appearance, i.e. Be aware that the form fields may show some strange things while your control phrase is incomplete, incongruent, or ambiguous.ĭ) As soon as the entered text rather resembles the control phrase of a traversing loop (i.e. The structured text fields in the upper region will immediately be synchronised whenever you touch the text. The parsing success depends on the keywords configured in Parser Preferences for counting (FOR) and traversing (FOR-IN) loops. now the text area (marked by a green box in the image below) will be enabled whereas the radio buttons and the form fields in the upper region simply show the conclusions Structorizer derives from parsing the control phrase you are writing. As before, the editor will immediately compose and present the control phrase.Ĭ) By selecting the "Full Text Editing" checkbox, however, the editor-internal synchronisation changes direction, i.e. The listed values are not required to be numbers, not even literals. But it might also be the name of an array variable or just a space-separated enumeration of some values. Again, you will have to specify the name of the loop variable but then a list of values, preferably comma-separated and within curly braces. The step specification in the control phrase will be omitted while the "Increment" field contains the default constant 1:ī) If you select the lower one of the two radio buttons (labelled "foreach" here), you will be presented the form for a traversing loop instead (see screenshot below). The editor will instantly compose the resulting control phrase from your input and display it in the (disabled) text area beneath. Since version 3.32-11 you get autocompletion proposals for known variable names etc. In addition, you might specify a different increment constant (negative in order to decrement). For a counting loop give the counter variable a name, specify its initial (start) value and its final (end) value. ![]() Now you have several ways to set up your loop.Ī) Fill in the text fields in the form region marked by the green box in the screenshot below. The labels and default field contents are influenced by both Parser Preferences and Structure Preferences (we will discuss his later). The screenshot shows it prepared for specifying a counting loop (upper radio button selected). When the editor pops up, you will see the following form. All these parameters form the control phrase, separated by configurable keywords.ģ. ![]() You may specify a different increment (step value), which might be negative but it must be a non-zero integer constant if you want your loop to be executable or sensibly exported to a programming language of your choice. By default the counter variable is automatically incremented by one after each execution of the loop body. Consequently, you have to specify a counter variable as well as its initial and final value. It is said to count the executed passes through the loop. The loop increments (or decrements) a number between an initial and a final limit of an interval. COUNTING loop - the traditional style.Structorizer supports two varieties of FOR loops: An element of type FOR loop is used to repeat certain instructions a pre-determined number of times.
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