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Locate JavaScript source code in Emacs


Locate JavaScript source code in Emacs

By : Miranda5
Date : November 29 2020, 01:01 AM
will be helpful for those in need Exuberant ctags supports javascript among others, and with the -e option (or when using etags) generates an Emacs-compatible TAGS file.
(There's also jsctags, but last I heard this did not provide Emacs support.)
code :


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In PHP code, given an object, is it possible to locate the source file?

In PHP code, given an object, is it possible to locate the source file?


By : user2736827
Date : March 29 2020, 07:55 AM
will help you Within a PHP class that is part of a much larger system, the full extent of which is not readily known, is it possible to find out where the source code resides for an object that is known to my code? That is, I have a variable that is loaded with an object about which I do not know much. Given that variable, is there a way to know what source file to look in to find the source code for the object that is in my variable? , Sure is.
code :
<?php
class Test {
}

$test = new Test;
$reflect = new ReflectionClass(get_class($test));
echo $reflect->getFileName();
locate corresponding JS source of code which is not optimized by V8

locate corresponding JS source of code which is not optimized by V8


By : gammabrian
Date : March 29 2020, 07:55 AM
will be helpful for those in need That error message used to be around line 10200 of v8/src/objects.cc, but is no more. It basically means no optimization was currently employed for a particular trace. Possibly because it was unused, or used sufficiently infrequently. It may have likely been a Node.js library function. The address provided is in memory. You'd have to have attached a debugger to v8 and load the symbol for the SharedFunctionInfo at that location. Possibly breakpoint on the line that produces the message too.
I don't think it is that useful to know what was not optimized, as there are lots of things that don't get optimized... just take the output from --trace_opt and assume everything else isn't. It was kind of just a hint that a check was performed for optimized code, and none was there are the time. Maybe try --trace_codegen and work backwards.
Locate the javascript source code from a function using CHrome

Locate the javascript source code from a function using CHrome


By : cupsos
Date : March 29 2020, 07:55 AM
will help you You can monitor the event listeners on DOM elements using the Elements tab of the Chrome DevTools; see this documentation.
Simply select your element of interest (say, an image) in the DOM tree, and display its event listeners. You can then narrow them down to click, mousedown, mouseup or whatever. Expand these events, and you'll see the JavaScript files that attached listeners on them. You may find what you seek there.
How can I locate source code by dll offset?

How can I locate source code by dll offset?


By : user3781809
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , I compiled freeimageplus into dll. the dll is used in by my application. But I found memory leaking problem. boundary check say: Leaking existing program --> FreeImagePlus.dll!0x0005CD06。 I have pdb with the freeiamgeplus.dll. How can I locate the source code using the information "FreeImagePlus.dll!0x0005CD06" , Put the dll and the pdb in the same directory and do
Can't Locate Source of NullPointerException in this Java code

Can't Locate Source of NullPointerException in this Java code


By : Shivam Dave
Date : March 29 2020, 07:55 AM
may help you . You're assigning to b_books[i] in parseAll() without creating the array.
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