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QUESTION
I have a .NET Core API Gateway based project. I want to introduce dependency injection (di) as many of the packages that I need to introduce are based on this pattern, so require the use of IServiceCollection and so on.
The examples I can find online of introducing DI to AWS Lambda focus only on the standard Lambda projects, where the entry point is the Handler function. I'm unsure how to replicate this with my API Gateway project, as it uses a different structure. I have one parameterless constructor of
...ANSWER
Answered 2020-Aug-20 at 07:34You were already pointed in the right direction by Naadem Taj, but here is an example to clarify.
You would want to set up the services in Startup.cs, and after that you have an access to those in other services you create.
Take an example:
QUESTION
where is the storage location of the browser's HTTP cache? disk or memory
I just want to know why some files come form disk cache and others from the memory cache, what's the mechanism behind of the HTTP cache? which cache has a higher priority?
It seems that scripts and stylesheets are stored in the disk, while images and fonts are stored in the memory.
...ANSWER
Answered 2020-May-19 at 10:36- memory cache store images and fonts etc, little files
- disk cache store js and css etc, big file
https://developer.mozilla.org/en-US/docs/Web/HTTP/Caching
https://developers.google.com/web/fundamentals/performance/get-started/httpcaching-6
QUESTION
I tried to display bit planes images with bit shift method. However I always get a whole black image for all subplots.
...ANSWER
Answered 2019-Nov-23 at 22:04I found out that I misused the numpy unsigned integer transformation, since the original grey array contains unsigned float numbers between 0 and 1. First, I need to make grey's intensity into float numbers which are greater than 1.
QUESTION
I'm trying to parse the BGP trace downloaded here. It is said that the BGP packet traces are stored in the files with prefix updates and these MRT format files can be read by PyBGPdump.
I downloaded one file and followed the instruction (or this better formatted one):
...ANSWER
Answered 2019-Aug-26 at 13:04This is currently a bug in the dpkt library. There is an open issue in the official repository, but it's from 2015. The problem is that the BGP Update parser is treating the AS Numbers in the AS Path as 2 octet/byte AS Numbers, even though they are encoded as 4 octet/byte AS Numbers. So when it reaches the beginning of an 4 byte encoded AS path of length two
QUESTION
I googled about it and after read some article and ebook Learning RabbitMQ, i didnt understand the exact differences, in Article i read that is Disk Node the related meta Data stored in Disk and Ram too, and in Ram Node only stored on Ram. but in Ebook doesnot say something like this, Disk Node only stored metadata on Disk and Ram Node only stored on Ram! which one is true?
...ANSWER
Answered 2019-Mar-10 at 17:25Don't worry about RAM nodes. Only use disk nodes - they store data on disk and in RAM.
NOTE: the RabbitMQ team monitors the rabbitmq-users
mailing list and only sometimes answers questions on StackOverflow.
QUESTION
For the following 2 classes got the same Java bytecode.
java version:
java version "1.8.0_181" Java(TM) SE Runtime Environment (build 1.8.0_181-b13) Java HotSpot(TM) 64-Bit Server VM (build 25.181-b13, mixed mode)
javac and javap version:
1.8.0_181
My doubt is
shouldn't method with synchronized keyword have different bytecode as we can see in synchronized block has
monitorenter
andmonitorexit
, or let us assume I should not mix synchronized block and synchronized method thenHow does JVM handle both methods differently?
...
ANSWER
Answered 2018-Oct-19 at 12:34The synchronized
modifier on the method is compiled into the ACC_SYNCHRONIZED flag in the method header. It does not affect the generated bytecode instructions; the code to enter and exit the monitor is added implicitly by the JVM when it sees that flag.
See the JVM specification for the complete list of flags in the method header and their meaning.
QUESTION
I am practicing writing a html using bootstrap. I am a beginner. There is a strange error when i open my html file in my browser: there are no paragraph tags
Part of source code:
...ANSWER
Answered 2017-May-03 at 07:58Are you sure you do not have anything on your body tag ?
Maybe it's just the cache of your browser that needs refresh (crtl + shift + R or cmd + shift + R)
You can also check if you do not have in your code a javascript plugin that adds code (in this p tag).
QUESTION
I am using Python 3.6.3. I am trying to run my first ML code, for the first time ever. Here is the code.
...ANSWER
Answered 2018-Mar-14 at 19:35Your program works perfectly for me and shows:
with Jypyther on the following versions: The version of the notebook server is: 5.2.2 3.6.3 | packaged by conda-forge | (default, Nov 4 2017, 10:10:56) [GCC 4.8.2 20140120 (Red Hat 4.8.2-15)]
only think which I changed the 8th line:
QUESTION
I am reading a Go tutorial (The Way To Go), and it mentions something about assembly routine, can somebody please explain what is that? It also states about implemented 'outside' Go, and also no body... may I know what is the purpose?
Quote as follow:
To declarer[sic] a function implemented outside Go, such as an assembly routine, you simply give the name and signature, and no body:
func flushICache(begin, end uintptr) // implemented externally
I tried to search online, but it seems hard to find any tutorial regarding assembly routine, what is that alien? And, what is the meaning of implemented outside Go?
...ANSWER
Answered 2017-Dec-01 at 14:37Please read this and follow the links there.
To cite it
Machine code or machine language is a set of instructions executed directly by a computer's central processing unit (CPU). Each instruction performs a very specific task, such as a load, a jump, or an ALU operation on a unit of data in a CPU register or memory.
<…>
All practical programs today are written in higher-level languages or assembly language.
The Go's own reference doc on its support for assembler is this.
QUESTION
I'm developing a chart control which is derived from a UserControl
, everything is fine until I found that a DependencyProperty
of bottom axis can not be set through binding. Here is the code snippet of the chart control:
ANSWER
Answered 2017-Jun-18 at 14:00This is likely a bug with traditional binding in UWP; however, with the new x:Bind
, the following code should be working as expected.
Note this gives you better performance too. So you should always consider using this binding approach first.
UpdateLooks like the real issue is related to ElementName
binding to an ancestor. But if you use the normal MVVM approach by specifying the DataContext
like this -
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