coding-js | Javascript interpreters featuring web workers | Interpreter library
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Trending Discussions on coding-js
QUESTION
Decode base64URL to base64 -- Swift / Decoding JSON array with codable - Swift 5
I tried to do it by referring to these two articles. But it's very different from what I'm trying to do.
Other code i referenced
...ANSWER
Answered 2020-Oct-28 at 02:39Do not use NSString. Do not use NSMutableData. Do not use NSLog. This is Swift, not Objective-C. Use Data.
Example of decoding a string which has been Base 64 encoded:
QUESTION
I'm trying to decode a JSON string in my twig file. Of course I've done some research and I've found this earlier question on StackOverflow: here. They give a method to decode JSON in twig, but I don't really understand the way I should do it.
They say something about creating files etc. but I don't understand where they should be created. So I'm trying to find another way.
I've come up with this page. When we take a look at 'filters', these lines come up:
...ANSWER
Answered 2017-May-02 at 08:40register(new \Silex\Provider\TwigServiceProvider(), []);
$app['twig']->addFilter(new Twig_SimpleFilter('json_decode', function ($string) {
return json_decode($string);
}));
QUESTION
I am working on a basic decoding-json Elm example for practice but can not figure out the Elm compilation errors. I also am confused why this runs in Ellie (that is with a remote JSON URL) but not when compiled locally using Elm v 19.0 FYI.
The goal was to make a simple call to get JSON from a Go server but just compiling the example Elm I got from the documentation for decoding JSON is not working out so here we are.
...ANSWER
Answered 2020-Jan-24 at 21:47It looks like you've installed version 1.0.0 of the elm/http
module whereas the example requires elm/http
version 2.0.0. I could reproduce your errors with version 1.0.0 of this package, but the code compiled successfully with 2.0.0.
Edit your elm.json
file to change the version of elm/http
to 2.0.0
and try running elm make ...
again.
QUESTION
Can someone tell me what I'm doing wrong? I've looked at all the questions on here like from here How to decode a nested JSON struct with Swift Decodable protocol? and I've found one that seems exactly what I need Swift 4 Codable decoding json.
...ANSWER
Answered 2017-Sep-16 at 08:50Check the outlined structure of your JSON text:
QUESTION
I'm having a problem making an array for foreach(){}
for the json that uses curl to get a json from youtube. I already have the json decoded for the curl part but when I tried to decode using true to get the array for json_decode
, I can't seem to get the array on each of the array output. How do i get each item and put it out as an array?
I already tried this website:
Decoding JSON using PHP
to get some help but its not working.
ANSWER
Answered 2019-Oct-04 at 20:28You are looping in the top level array. You need to loop in the items
index:
QUESTION
I've read read many tutorials and searched for answers here on SO;
Decoding Nested JSON with Optional Values Swift 4
Swift 4 Not decoding JSON optional properly
Decoding optionals doesn't seem problematic using below code. Obviously I'm doing something wrong, but what is it!?
Part of my code:
...ANSWER
Answered 2019-Jan-22 at 17:45The API decodeIfPresent
is pointless in this case because the key does exist.
An existing key with null
value and a missing key are two different situations.
And never force unwrap in the init(from decoder
method.
There are two options:
- Delete the entire
init
method then the optional struct members handle thenull
values. Use regular
decode
and ignore the error
QUESTION
I am using go 1.9
. And I want to deepcopy value of object into another object. I try to do it with encoding/gob and encoding/json. But it takes more time for gob encoding than json encoding. I see some other questions like this and they suggest that gob encoding should be quicker. But I see exact opposite behaviour. Can someone tell me if I am doing something wrong? Or any better and quicker way to deepcopy than these two? My object's struct is complex and nested.
The test code:
...ANSWER
Answered 2017-Oct-17 at 14:54gob
difference
The encoding/gob
package needs to transmit type definitions:
The implementation compiles a custom codec for each data type in the stream and is most efficient when a single Encoder is used to transmit a stream of values, amortizing the cost of compilation.
When you "first" serialize a value of a type, the definition of the type also has to be included / transmitted, so the decoder can properly interpret and decode the stream:
A stream of gobs is self-describing. Each data item in the stream is preceded by a specification of its type, expressed in terms of a small set of predefined types.
This is explained in great details here: Efficient Go serialization of struct to disk
So while in your case it's necessary to create a new gob encoder and decoder each time, it is still the "bottleneck", the part that makes it slow. Encoding to / decoding from JSON format, type description is not included in the representation.
To prove it, make this simple change:
QUESTION
I am attempting to parse JSON using Decodable that has the following structure and I am being thrown the error:
does not confirm to protocol "Decodable"
The JSON structure looks as such:
...ANSWER
Answered 2017-Dec-31 at 14:24The value for key rates
is a dictionary, not an array.
The most reasonable way is to decode the object to a dictionary
QUESTION
I was trying to parse the json data from a url using cURL and then json_decode to access the objects but I failed. I already search it how to access but I failed.
this is the links that I visited hoping that I can solve the problem.
...ANSWER
Answered 2017-Aug-31 at 06:00seems an array of array so
eg: for username
QUESTION
Is there really an undocumented feature in PHP to decode JSON POST body to $_REQUEST?
Not the same as PHP is automatically decoding JSON data?
I am creating an API in PHP to receive parameters in FormData and JSON. When I test in POSTMAN, it appears that PHP automatically decodes POST body with content-type:application/json
to $_REQUEST
.
I have been testing it whole afternoon and can't figure out how it is possible.
This is the post request:
...ANSWER
Answered 2017-May-03 at 16:48I figured out. It is PECL :: Package :: json_post
https://pecl.php.net/package/json_post
This extension provides a PHP content type handler for "application/json" and "text/json" to PHP's form data parser. If the
Content-Type
of an incoming request istext/json
, the JSON contents of the request body will by parsed into$_POST
.
I use remi repo to install PHP on centos. It just comes with my installation of PHP 5.6
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