I am currently following the Squeak By Example book.
It shows that when looking for an unknown method one can search the method by the correspondance between its input and its output in the Method Finder (it opens a Selector Browser window).
For example if I enter 'aaa' . 'AAA' it finds both Character asUppercase and String asUppercase.
SBE teaches how to add a new method shout to the class String that puts a string in upper case and adds a final exclamation mark. Prior to the method addition, it also shows how to add a test to verify the new method via the Test Runner.
If I search 'aaa' . 'AAA!' I get a No single method does that function.
If I test (print) it in the workspace I get the expected 'thing' shout --> 'THING!'. Why? Is there something to refresh?
Method Finder only tries known methods, otherwise the system could easily crash. See MethodFinder>>initialize.
Related
I am trying to assign the value of this stucture path to a fieldsymbol, but this path does not work because it has a table in it's path.
But with in the debugger this value of this path is shown correctly.
Is there a way to dynamically assign a component of a table line to a fieldsymbol, by passing one path?
If not then I will just read the table line and then use the path to get the wanted value.
ls_struct (Struct)
- SUPPLYCHAINTRADETRANSACTION (Struct)
- INCL_SUPP_CHAIN_ITEM (Table)
- ASSOCIATEDDOCUMENTLINEDOCUMENT (Element)
i_component_path = |IG_DDIC-SUPPLYCHAINTRADETRANSACTION-INCL_SUPP_CHAIN_ITEM[1]-ASSOCIATEDDOCUMENTLINEDOCUMENT|.
ASSIGN (i_component_path) TO FIELD-SYMBOL(<lg_value>).
IF <lg_value> IS NOT ASSIGNED.
return.
ENDIF.
<lg_value> won't be assigned
Solution by Sandra Rossi
The debugger has its own syntax and own logic, it doesn't apply the ASSIGN algorithm at all. With ABAP source code, you have to use ASSIGN twice, the first one to reach the internal table, then you select the first line, and the second one to reach the component of the line.
The debugger works completely differently, the debugger code works only in debug mode, you can't call the code from the debugger (i.e. if you call it, the kernel code used by the debugger will fail). No, there's no "abappath". There are the XSL transformation objects (xpath), but it's slow for what you ask.
Thank you very much
This seems to be a rather unexpected limitation of the ASSIGN statement. Probably worth a ticket to SAP's ABAP language group to clarify whether it's even a bug.
While this works:
ASSIGN data-some_table[ 1 ]-some_field TO FIELD-SYMBOL(<lv_source>).
the same expressed as a string doesn't:
ASSIGN (`data-some_table[ 1 ]-some_field`) TO FIELD-SYMBOL(<lv_source>).
Alternative 1 for (name) of the ABAP keyword documentation for the ASSIGN statement says that "[t]he name in name is structured in the same way as if specified directly".
However, this declaration is immediately followed by "the content of name must be the name of a data object which may contain offsets and lengths, structure component selectors, and component selectors for assigning structured data objects and attributes in classes or objects", a list that does not include the table expressions we would need here.
I have to write the following code (using Zend\Filter\Inflector):
$inflector = new Inflector(':string');
$inflector->setRules([
':string' => [
new StringToLower(),
new UnderscoreToSeparator(),
new DashToCamelCase(),
new UpperCaseWords(),
]
]);
As you see, it uses 4 times the new keyword, immediately instantiating classes (following Zend Filter Interface). In this case autocomplete works fine, PhpStorm easily found what I wanted typing after new.
But better notation, using factories, is using strings, instead of direct instantiation using new:
$inflector = new Inflector(':string');
$inflector->setRules([
':string' => [
'StringToLower',
'UnderscoreToSeparator',
'DashToCamelCase',
'UpperCaseWords',
]
]);
Is there a way to have autocomplete for those strings? Maybe some annotation hint or something?
Why don't you use UpperCaseWords::class? The resulting value (that will be available during runtime) will be FQN.
I'm not familiar with Zend Framework so I'm just not sure if Zend\Filter\Inflector accepts FQN or it limited to/requires class names only (it should accept FQN ... so user-made classes would also be accepted/it's expected behaviour).
The benefit: refactoring / find usages will also be supported (since this is a piece of code and not just a string).
In any case: class name completion in strings should work since 2017.1.4 (works fine here in current stable 2017.2.4).
You just invoke code completion one more time (e.g. Ctrl + Space twice (or whatever else shortcut you have there on your computer/OS for Code | Completion | Basic)) .. or just use Ctrl + Alt + Space straight away (class name completion).
Obviously, it will work if completion is invoked on the beginning of the string. If it's in the middle/end of it (e.g. "use [CLASS_NAME_EXPECTED_HERE]") -- type whole thing manually or try other completion methods (e.g. Cyclic Expand Word if such class name was already mentioned in current file).
I'm using the MSOfficeDemo/MSWord classes as a starter.
How can I print a document that is open in Word?
In a new method in the MSWord.java class I've tried:
this.invokeNoReply("Print", this.getDocuments());
this.invokeNoReply("PrintOut", this.getDocuments());
this.invokeNoReply("FilePrint", this.getDocuments());
I get an Unknown Name (hr=-2147352570) error for each of the above calls.
I've been searching for a week now and haven't found a solution.
Rather than guessing, you need to match your method signature to the documentation.
You need to actually print the active document (this.getActiveDocument()) rather than the collection of documents. Then refer to the Document methods to see which method (and arguments) to use, in this case PrintOut is the correct method.
What you pass for the parameters, you need to look at the various method signatures in ComLateBindingObject and pick the one that best matches your needs (you can pass one or two arguments, more than that you need an array.
This code should work... haven't tested it (don't have MSWord on my Windows VM) but combined with the links above it should get you in the right direction:
this.invokeNoReply("PrintOut", getActiveDocument());
If that doesn't work, try:
this.invokeNoReply("PrintOut", getActiveDocument().getIDispatch());
If you actually need to pass any of the parameters, you'll create a VARIANT for them and start filling in 1 or more of the parameters (or an array of them).
I'm curious about whether the following functional test is possible. I'm working with PHPUnit_Extensions_SeleniumTestCase with Selenium-RC here, but the principle (I think) should apply everywhere.
Suppose I execute the following command on a particular div:
function testInput() {
$locator = $this->get_magic_locator(); // for the sake of abstraction
$this->type( $locator, "Beatles" ); // Selenium API call
$this->verifyText( $locator, "Beatles" ); // Selenium API call
}
Conceptually, I feel that this test should work. I'm entering data into a particular field, and I simply want to verify that the text now exists as entered.
However, the results of my test (the verifyText assertion fails) suggest that the content of the $locator element are empty, even after input.
There was 1 failure:
1) test::testInput
Failed asserting that <string:> matches PCRE pattern "/Beatles/".`
Has anyone else tried anything like this? Should it work? Am I making a simple mistake?
You should use verifyValue(locator,texttoverify) rather than verifyText(locator,value) for validating the textbox values
To answer your initial question ("Is it meaningful ..."), well, maybe. What you're testing at that point is the browser's ability to respond to keystrokes, which would be sort of lame. Unless you've got some JavaScript code wired to some of the field's properties, in which case it might be sort of important.
Standard programmer's answer - "It depends".
If my class has a non-empty constructor, is it possible to auto-complete parameters in the new expression?
With Eclipse, if you press ctrl+space when the cursor is between the parenthesis:
MyClass myObject = new MyClass();
it will find the appropriate parameters.
--> MyClass myObject = new MyClass(name, value);
When I use ctrl+shift+spacebar after the new, Intellij shows me the constructors, but I can't choose one for auto-completion. Am I missing an option?
I usually start with CtrlP (Parameter Info action) to see what arguments are accepted (auto guess complete is way to error prone in my opinion). And if as in your case you want to fill in name type n a dropdown menu appears with all available variables/fields (etc) starting with n Arrow Up/Down and Tab to select name, or CtrlSpace to select a method (or even CtrlAltSpace to be killed by suggestions;-), followed by , and v Tab for value.
Well I used the eclipse key map where Parameter Info is unassigned.
Here is how to change that:
Well there's the Ctrl+Shift+Space combination, which tries to come up with a set of possible arguments. And if you press the Ctrl+Shift+Space a second time, Idea tries find arguments which fit across multiple calls & conversions.
So in your example Ctrl+Shift+Space would almost certainly bring up the 'name' as suggestion. And the next Ctrl+Shift+Space would bring up 'value' as suggestion.
In Intellij Idea 2016.3 you can use option + return. It will ask you if you want to introduce the named argument for the argument you are on and all the followers.
There's no such possibility yet. As IDEA doesn't fill the arguments automatically, distinguishing the constructors in the lookup makes no sense. There's a request for that (http://youtrack.jetbrains.net/issue/IDEABKL-5496) although I sincerely believe such a behavior is too dangerous and error-prone.