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Case objects vs Enumerations in Scala
...nknownCurrency being of type Currency can now sneak into other parts of an API.
It's advisable to push that case outside Enumeration and make the client deal with an Option[Currency] type that would clearly indicate there is really a matching problem and "encourage" the user of the API to sort it ou...
When do I need to use AtomicBoolean in Java?
...f threads are
running through your code that uses
these atomic concurrency API, they
will scale much better than code
which uses Object level
monitors/synchronization. Since,
Java's synchronization mechanisms
makes code wait, when there are lots
of threads running through your
critical sections, a s...
How do sessions work in Express.js with Node.js?
... that could be altered to whatever storage form implements the appropriate API.
So if you want to check things without a specific req request object, like you said, you need to just access that same storage. On the bottom of the first documentation page, it details required methods the storage nee...
How to add an Access-Control-Allow-Origin header
...ud-control-panel" --header "X-Auth-User: your-cloud-username" https://auth.api.rackspacecloud.com/v1.0
From the results returned, extract the values for X-Auth-Token and X-Storage-Url
curl -X POST \
-H "Content-Type: font/woff" \
--header "X-Auth-Token: returned-x-auth-token" returned-x-stora...
Can not deserialize instance of java.util.ArrayList out of START_OBJECT token
...the POJO's member variable and produce the JSON you are looking for in the API request.
Example:
public class ApiRequest {
@JsonProperty("collection")
private Collection<COrder> collection;
// getters
}
Then set the parameter type of COrderRestService.postOrder() to be your new ...
curl POST format for CURLOPT_POSTFIELDS
...part/form-data.
JSON encoding
Neverthless, when communicating with JSON APIs, content must be JSON encoded for the API to understand our POST data.
In such cases, content must be explicitely encoded as JSON :
CURLOPT_POSTFIELDS => json_encode(['param1' => $param1, 'param2' => $param2])...
EF Code First foreign key without navigation property
...
With EF Code First Fluent API it is impossible. You always need at least one navigation property to create a foreign key constraint in the database.
If you are using Code First Migrations you have the option to add a new code based migration on the p...
What is the meaning of addToBackStack with null parameter?
...ic abstract FragmentTransaction addToBackStack (String name)
Added in API level 11
Add this transaction to the back stack. This means that the transaction will be remembered after it is committed, and will reverse its operation when later popped off the stack.
Parameters
name A...
What is the maximum length of a Push Notification alert text?
... maximum size allowed for a notification payload depends on which provider API you employ.
When using the legacy binary interface, maximum payload size is 2KB (2048 bytes).
When using the HTTP/2 provider API, maximum payload size is 4KB (4096 bytes).
For Voice over Internet Protocol (VoIP) notific...
Set title background color
...
This was introduced in API 11 (3.0 Honeycomb) which is certainly outdated enough at this point to consider this a valid option.
– zgc7009
Nov 21 '16 at 20:17
...