What's the easiest way to view source code of golang packages in LiteIDE?
for example, when there are code like this:
import "github.com/revel/revel"
func init() {
// Filters is the default set of global filters.
revel.Filters = []revel.Filter{
revel.PanicFilter, // Recover from panics and display an error page instead.
revel.RouterFilter, // Use the routing table to select the right Action
revel.FilterConfiguringFilter, // A hook for adding or removing per-Action filters.
revel.ParamsFilter, // Parse parameters into Controller.Params.
revel.SessionFilter, // Restore and write the session cookie.
revel.FlashFilter, // Restore and write the flash cookie.
revel.ValidationFilter, // Restore kept validation errors and save new ones from cookie.
revel.I18nFilter, // Resolve the requested language
HeaderFilter, // Add some security based headers
revel.InterceptorFilter, // Run interceptors around the action.
revel.CompressFilter, // Compress the result.
revel.ActionInvoker, // Invoke the action.
}
}
If I want to know what's the revel.PanicFilter really do, I would visit the http://github.com/revel/revel and seek the source code..
When using C++ (QtCreator), i would only need to ctrl+click then it would visit the declaration/implementation.
My Jump to declaration menu doesn't work in LiteIDE, maybe because the packages are compressed in .a archive?
file pkg/linux_amd64/github.com/revel/revel.a
pkg/linux_amd64/github.com/revel/revel.a: current ar archive
Is there an easier way to go to declaration to view the source just like in QtCreator?
F2 key jumps to the declaration of library function in Lite IDE v24.3
Ctrl+Shift+J works for me on LiteIDE 26. F2 doesnt work!
Related
In my Go template I have a function called "asset":
<html>
{{ asset "application.css" }}
</html>
This function opens a webpack manifest.json and finds the corresponding hashed file:
func asset(s string) string {
data, _ := ioutil.ReadFile("manifest.json")
// do stuff with data
return filename
}
My question is regarding the implications on performance. When is this function being called? Is go opening the manifest file every time the template is executed; every time a user visits the page? Or is it called on the initial template.New("").ParseFiles() call?
Would I be better off opening the file on application startup, and storing a map of filenames in a global variable? That makes more sense to me, but what would be the best way to handle this?
The registered asset() function is called every time the template is executed, and thus the file "manifest.json" is opened and read every time.
If its content doesn't change, load it just once, either on first use, or better, on application startup, which may be during package initialization (in a package init() function).
If you do this, you can pass the filename to the template execution, so it won't even require registering a custom function.
I'm building a NativeScript plugin for iOS to integrate a card payment terminal as an external accessory. It is almost done, and working, but I have problem with passing one argument called "optionals". This is the whole code I'm trying to implement. It's the payworks framework for a Miura terminal. http://www.payworks.mpymnt.com/node/143
MPTransactionParameters *tp = [MPTransactionParameters chargeWithAmount:[NSDecimalNumber decimalNumberWithString:#"5.00"]
currency:MPCurrencyEUR
optionals:^(id<MPTransactionParametersOptionals> _Nonnull optionals) {
optionals.subject = #"Bouquet of Flowers";
optionals.customIdentifier = #"yourReferenceForTheTransaction";
}];
I cannot find a way of sending this "optionals" function.
In the generate typing metadata I see the MPTransactionParametersOptionals is a #protocol, but still don't know how to use it here as a parameter.
This is my current javascript code for the block
const tp = MPTransactionParameters.chargeWithAmountCurrencyOptionals(
amount,
MPCurrencyEUR,
function (optionals) {
console.log(optionals); //logs the newly created MPTransactionParameters instance, with set amount and currency properties, but cannot touch or set the optional properties.
}
);
The 3rd parameter of chargeWithAmountCurrencyOptionals() should be a function, but I'm doing it wrong, and searched everywhere in google how to do it but no success. I'm already trying for 2 days.
It is working, when the 3rd parameter is null, but I need the set the optional properties.
EDIT: adding the metadata. There are a lot of typings for MPtransactionParameters, so I decided to give you the whole file so you can search.
https://drive.google.com/open?id=1kvDoXtGbCoeCT20b9_t2stc2Qts3VyQx
EDIT2: Adding the typings:
https://drive.google.com/open?id=1lZ3ULYHbX7DXdUQMPoZeSfyEZrjItSOS
I'm trying to delay the construction of every 'page' (i.e. a Wt::WWidget inside my global Wt::WStackedWidget), until it is needed. Therefore I'm using a method similar to the DeferredWidget of the Widget Gallery example of Wt.
However, when I load a library using require, the execution of javascript code is not delayed until the library is loaded, when the content is not loaded with the first request (f.ex. inside WWidget::load()), i.e. running the following code
wApp->require("myLibrary.js"); // defines function MyFunction ();
doJavaScript ("MyFunction ();");
runs without error when it is requested on the first loaded page, but when the content is loaded after a user event, the following javascript error occurs:
MyFunction is not defined
Question: How should I overcome this error or how should I correctly delay the loading of my (large) javascript library until needed?
Further research
Inspecting the source code of WebRenderer::collectJS:
Javascript updates seems to be performed before loading new libraries:
// Executing javascript updates, including doJavaScript calls.
for (unsigned i = 0; i < changes.size(); ++i) {
changes[i]->asJavaScript(sout, DomElement::Priority::Update);
delete changes[i];
}
...
// Loading new libraries.
int librariesLoaded = loadScriptLibraries(*js, app);
Shouldn't the javascript update being delayed until the new libraries are loaded?
Further research - Part 2
Executing javascript code (which may depend on required libraries) is delayed at two different places, i.e. inside
WebRenderer::collectJavaScript: delays execution of all javascript code (including invisible changes) until all old required libraries (excluding newly required libraries f.ex. inside WWidget::load) are loaded.
WebRenderer::collectJS: delays execution of some javascript code until all required libraries (including newly required libraries f.ex. inside WWidget::load) are loaded.
I am not sure with the javascript scriploader behavior. But in my wt experience i make it append in this way.
1) My javascript library is load in my main page at start with require.
2) If i need later some new function, i write it in my script string like this :
string javacode = "function MyTest ( ) { "
"alert('test') ; }"
"MyTest();"
doJavaScript ( javacode ) ;
If you want load some javascript file and run some function after it is load you schould make the require in the contructor of your container class.
Then you derived the function bool Wt::WCompositeWidget::loaded()
and put in this function your dojavaScript...
At the present I'm pasting a Javascript into the console of FF and I'm calling the functions from the console:
function fill (i){
if(i==1){
SINGLE_START();
}
else if(i==2){
DUAL_START();
}
else if(i==3){
INTEGRATED_START();
}
else{
alert("=======================\n Tool Filler\n=======================\n\n1 or 2");
}
}
It is used to scrape the content of the website and e.g. create a file or generate an email from certain parts of the website, e.g.:
function SINGLE_START(){
//Focus:
let d = $(document).activeElement.contentDocument.activeElement.contentDocument.activeElement.contentDocument;
etc.
I thougt, there could be a way to use it through an extension and so I installed Tampermonkey and saved the script as userscript within the extension. But than I have a problem that I'm not able to call the desired function from the script as I need it, not just start the script as the website loads.
Does anyone has an idea how to call the functions one by one from within Tampermonkey (or Greasemonkey), or any other extension?
Thanks in advance!
This is because Tampermonkey scripts run in isolated context. There are two kinds:
1. No special privilegies
If you're not using any special GM functions that are unlocked by #grant GM_doThisAndThat and instead you use #grant none, then what internally happens is something like this:
function TheScript() {
// Here is your script that you added to tampermonkey
}
TheScript();
This if you have a function there, it is only available in the script. You need to explicitly expose it to window context:
function fill (i){
... code here ...
}
window.myFill = fill;
Then in console you write myFill(42) and it will execute.
I would recommend that you avoid assigning fill to window since it's a name that could likely conflict with something, but that's up to you.
2. Special privilegies
If you're using some of the GM features, you need to add #grant unsafeWindow and then assign to unsafeWindow variable. Be careful what you expose like this, you don't want to allow the website to access any of the GM_function features as they could access your private data on other websites and your computer!
I'm currently using MvvmCross DownloadCache -- and it's working alright -- especially nice when I just need to drop in an Image URL and it automagically downloads / caches the image and serves up a UIImage.
I was hoping to leverage the code for one other use case -- which is I'd like to grab source images from URL's and cache the files on the local file system, but what I really want for this other use case is the image path on the local file system instead of the UIImage itself.
What would help me most if I could get an example of how I might accomplish that. Is it possible to make that happen in a PCL, or does it need to go into the platform specific code?
Thanks -- that works, but just in case anyone else is following along, I wanted to document how I got the Mvx.Resolve<IMvxFileDownloadCache>() to work. In my setup.cs (in the touch project), I had:
protected override void InitializeLastChance ()
{
Cirrious.MvvmCross.Plugins.DownloadCache.PluginLoader.Instance.EnsureLoaded();
Cirrious.MvvmCross.Plugins.File.PluginLoader.Instance.EnsureLoaded();
Cirrious.MvvmCross.Plugins.Json.PluginLoader.Instance.EnsureLoaded();
...
}
But that wasn't enough, because nothing actually registers IMvxFileDownloadCache inside the DownloadCache plugin (which I was expecting, but it's just not the case).
So then I tried adding this line here:
Mvx.LazyConstructAndRegisterSingleton<IMvxFileDownloadCache, MvxFileDownloadCache>();
But that failed because MvxFileDownloadCache constructor takes a few arguments. So I ended up with this:
protected override void InitializeLastChance ()
{
...
var configuration = MvxDownloadCacheConfiguration.Default;
var fileDownloadCache = new MvxFileDownloadCache(
configuration.CacheName,
configuration.CacheFolderPath,
configuration.MaxFiles,
configuration.MaxFileAge);
Mvx.RegisterSingleton<IMvxFileDownloadCache>(fileDownloadCache);
...
}
And the resolve works okay now.
Question:
I do wonder what happens if two MvxFileDownloadCache objects that are configured in exactly the same way will cause issues by stepping on each other. I could avoid that question by changing the cache name on the one I'm constructing by hand, but I do want it to be a single cache (the assets will be the same).
If you look at the source for the plugin, you'll find https://github.com/MvvmCross/MvvmCross/blob/3.2/Plugins/Cirrious/DownloadCache/Cirrious.MvvmCross.Plugins.DownloadCache/IMvxFileDownloadCache.cs - that will give you a local file path for a cached file:
public interface IMvxFileDownloadCache
{
void RequestLocalFilePath(string httpSource, Action<string> success, Action<Exception> error);
}
You can get hold of a service implementing this interface using Mvx.Resolve<IMvxFileDownloadCache>()
To then convert that into a system-wide file path, try NativePath in https://github.com/MvvmCross/MvvmCross/blob/3.2/Plugins/Cirrious/File/Cirrious.MvvmCross.Plugins.File/IMvxFileStore.cs#L27