VLEX | Vector Layout Expressions | Animation library
kandi X-RAY | VLEX Summary
kandi X-RAY | VLEX Summary
SVG is deemed to be the holy grail for graphics in resposive web design! But are they really?!. Yes and No. Beeing "scalable" let them appear perfectly sharp in any resolution. And the fact, that they are based on vector definitions, make them small when it comes to file-size. But in situations, where you want layout inside a SVG, it is quite frustrating. Of course, there is this 'viewbox' thing, that can help sometimes, but most of the time drives you crazy. Some of the node attributes can be set with percentages, but others only in user-units (e.g. polygons, paths). It is a bit like having a "position:absolute"-style on every DOM-node and then try to make the layout flow. VLEX is the attempt to overcome this SVG shortcomings. It is a damn small script (5 KB with a lot of comments; 750 bytes (!) minified and gzipped) that allows, once added to the SVG, a declarative layout. The basic idea is to introduce an attribute "vlex", that holds a description with all the micro logic inside to layout a node properly on a resize event. Have a look at the Quickstart example, where a circle is centered on stage with small effort and than go on to the other vlexamples...
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QUESTION
I'm writing a compiler with flex and bison for a college assignment. I'm having trouble adding a function identifier to my symbol table - when evaluating a function declaration I'm getting the opening parenthesis in yytext
where I'd expect the identifier. In my flex file I have, where yylval
is an union and vlex
is a struct
:
ANSWER
Answered 2019-Oct-27 at 05:17The basic problem is that you are using yylval
in the new_identifier_with_node
production, instead of $1
. $1
is the semantic value of the first symbol in the production, in this case TK_IDENTIFIER
.
In a bison action, yylval
is usually the value of lookahead token, which is the next token in the input stream. That's why it shows up as a parenthesis in this case. But you cannot in general count on that because bison will perform a default reduction before reading the lookahead token. In general, using yylval
in a bison action is very rarely useful, aside from some applications in error recovery.
Even after you fix that, you will find that the semantic values are incorrect because your flex action is forwarding a pointer to an internal data buffer rather than copying the token string. See, for example, this question.
QUESTION
I try to open port 5431 so typed:
...ANSWER
Answered 2018-Apr-20 at 18:57You are not opening the port, you are just letting the packet directed to such port not to be filtered by firewall.
A program should open the port (aka listening
). Firewall just decides if packets go or not to a specific port (which could be open or close), but has nothing to do with how to handle packets.
QUESTION
I just generated new project on https://start.spring.io/, added
- Web
- Security
- JPA
- PostgreSQL
then I have Description:
...ANSWER
Answered 2018-Apr-05 at 10:17Try adding property:
QUESTION
I have two tables bo_operator
and hist_bo_operator_password
. In bo_operator
the id
column is foreign key to hist_bo_operator_password
and I can have many the same operator_id
in hist_bo_operator_password
and only one id
in bo_operator
.
My entity:
...ANSWER
Answered 2017-Oct-12 at 08:24Why don't you create entity of hist_bo_operator_password? Then you could have List of that entities (instead of just String List) and just add another object to List and save entity Operator.
QUESTION
I have a fundamental problem with spring boot application. The start webpage is http://127.0.0.1:8080/login and after log in user is redirect to http://127.0.0.1:8080/MainMenu. Unfortunatelly it is also possible to write in url bar http://127.0.0.1:8080/MainMenu and going there without authentication. What is the main idea to block that action?
@edit This is my configuration:
...ANSWER
Answered 2017-Sep-08 at 12:57Add the following code, It will block all the request except "/" & "/login"
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