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Difference between this and self in self-type annotations?
...
All three forms are valid, and have the effect that B is assumed as the type of this in class A.
The first two variants
trait A { self: B => ... }
trait A { foo: B => ... }
introduce self (respectively, foo) as an ...
Initializing IEnumerable In C#
...adding to the answers stated you might be also looking for
IEnumerable<string> m_oEnum = Enumerable.Empty<string>();
or
IEnumerable<string> m_oEnum = new string[]{};
share
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i...
How can I get device ID for Admob
...ebugEnabled(this)) //debug flag from somewhere that you set
{
String android_id = Settings.Secure.getString(this.getContentResolver(), Settings.Secure.ANDROID_ID);
String deviceId = md5(android_id).toUpperCase();
mAdRequest.addTestDevice(deviceId);
boolean isTest...
What causes javac to issue the “uses unchecked or unsafe operations” warning
...ections without type specifiers (e.g., Arraylist() instead of ArrayList<String>()). It means that the compiler can't check that you're using the collection in a type-safe way, using generics.
To get rid of the warning, just be specific about what type of objects you're storing in the collect...
Why does this assert throw a format exception when comparing structures?
... got it. And yes, it's a bug.
The problem is that there are two levels of string.Format going on here.
The first level of formatting is something like:
string template = string.Format("Expected: {0}; Actual: {1}; Message: {2}",
expected, actual, message);
Then ...
Alter Table Add Column Syntax
...
@ethanbustad It is also valid for DB2 and Postgres.
– ᴠɪɴᴄᴇɴᴛ
Sep 2 '16 at 14:39
3
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Is the order of elements in a JSON list preserved?
...unordered collection of zero or more name/value
pairs, where a name is a string and a value is a string, number,
boolean, null, object, or array.
An array is an ordered sequence of zero or more values.
The terms "object" and "array" come from the conventions of
JavaScript.
Some imp...
Java: How to convert List to Map
...le to do this in one line using streams, and the Collectors class.
Map<String, Item> map =
list.stream().collect(Collectors.toMap(Item::getKey, item -> item));
Short demo:
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;
pub...
How do I mock an autowired @Value field in Spring with Mockito?
...re:
Production class:
@Value("#{myProps[‘some.default.url']}")
private String defaultUrl;
Test class:
import org.springframework.test.util.ReflectionTestUtils;
ReflectionTestUtils.setField(instanceUnderTest, "defaultUrl", "http://foo");
// Note: Don't use MyClassUnderTest.class, use the inst...
Is it possible to have SSL certificate for IP address, not domain name?
...e extension contains an iPAddress, the address MUST be stored in the octet string in "network byte order", as specified in [RFC791]. ... For IP version 4..., the octet string MUST contain exactly four octets." In short, you can't use a subnet in the subjectAltName field
– reg...