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Android update activity UI from service
...erence to the Service, thus allowing direct calls on it, rather
than using Intents.
Use RxJava to execute asynchronous operations.
If the Service needs to continue background operations even when no
Activity is running, also start the service from the Application
class so that it does not get stoppe...
Differences between “BEGIN RSA PRIVATE KEY” and “BEGIN PRIVATE KEY”
...gorithms can be used.. But some software (mysql) can use only PKCS#1 keys. Converting from PKCS#8 to PKCS#1 can be done with openssl rsa -in key.pem -out key.pem. Converting the other way can be done with openssl pkey -in key.pem -out key.pem.
– Paul Tobias
Sep...
C++ auto keyword. Why is it magic?
...emplates. Consider a function template like this:
template<class T>
int whatever(T t) {
// point A
};
At point A, a type has been assigned to T based on the value passed for the parameter to whatever. When you do auto x = initializer;, the same type deduction is used to determine the t...
Readonly Properties in Objective-C?
I have declared a readonly property in my interface as such:
7 Answers
7
...
How does Facebook disable the browser's integrated Developer Tools?
...e object.
//Since this is already a wrapped object it would be converted if we directly return it. Hence,
//`return result` would actually replicate the very normal behaviour as the result is converted.
//to output what's actually in the remote object, we have to st...
What's the difference between Task.Start/Wait and Async/Await?
...d is nothing more than what you're already used to: breaking up big tasks into little bits, queueing them up, and executing all the little bits in some order. Some of those executions cause other work to be queued up, and life goes on. One thread!
– Eric Lippert
...
Android global variable
... class MyProperties {
private static MyProperties mInstance= null;
public int someValueIWantToKeep;
protected MyProperties(){}
public static synchronized MyProperties getInstance() {
if(null == mInstance){
mInstance = new MyProperties();
}
return mInstance;
...
How to programmatically set maxLength in Android TextView?
...r used it for textview, only edittext :
TextView tv = new TextView(this);
int maxLength = 10;
InputFilter[] fArray = new InputFilter[1];
fArray[0] = new InputFilter.LengthFilter(maxLength);
tv.setFilters(fArray);
share
...
How to properly create composite primary keys - MYSQL
Here is a gross oversimplification of an intense setup I am working with. table_1 and table_2 both have auto-increment surrogate primary keys as the ID. info is a table that contains information about both table_1 and table_2 .
...
LISTAGG in Oracle to return distinct values
...0. Thanks to this post here by user3465996
select col1 ,
dbms_xmlgen.convert( -- HTML decode
dbms_lob.substr( -- limit size to 4000 chars
ltrim( -- remove leading commas
REGEXP_REPLACE(REPLACE(
REPLACE(
XMLAGG(
XMLELEMENT("A",col2 )
...