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What does OSGi solve?
...son, there is no special interface required for OSGi services, even a Java String object can act as an OSGi service. This strategy makes application code easier to port to another environment.
Runs Everywhere - Well, that depends. The original goal of Java was to run anywhere. Obviously, it is not p...
Declare and initialize a Dictionary in Typescript
... you would expect: Index signatures are
incompatible. Type '{ firstName: string; }' is not assignable to type
'IPerson'. Property 'lastName' is missing in type '{ firstName:
string; }'.
Apparently this doesn't work when passing the initial data at declaration.
I guess this is a bug in TypeS...
Increment value in mysql update query
...what you were doing wrong is that you passed the old amount of points as a string (points='5'+1), and you can't add a number to a string. ;)
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Why use symbols as hash keys in Ruby?
...cause they are only stored once.
Symbols in Ruby are basically "immutable strings" .. that means that they can not be changed, and it implies that the same symbol when referenced many times throughout your source code, is always stored as the same entity, e.g. has the same object id.
Strings on t...
When tracing out variables in the console, How to create a new line?
...
In ES6/ES2015 you can use string literal syntax called template literals. Template strings use backtick character instead of single quote ' or double quote marks ". They also preserve new line and tab
const roleName = 'test1';
const role_ID = 't...
Git mergetool generates unwanted .orig files
...ution a *.orig file is created. Is there a way for it to not create that extra file?
10 Answers
...
Handling optional parameters in javascript
... == 2) { // if only two arguments were supplied
if (Object.prototype.toString.call(parameters) == "[object Function]") {
callback = parameters;
}
}
//...
}
You can also use the arguments object in this way:
function getData (/*id, parameters, callback*/) {
var id = arguments[...
Use Font Awesome Icons in CSS
...text character where you want it, without having to add all kinds of messy extra mark-up.
Be sure to set position:relative on your actual text wrapper for the positioning to work.
.mytextwithicon {
position:relative;
}
.mytextwithicon:before {
content: "\25AE"; /* this is your text. Y...
What is the difference between return and return()?
...t starts the return statement, not a function.
As has been mentioned, the extra parentheses affect evaluation order, but are not used to "execute" the function named return. That is why these lines work without any problems:
return (1);
var a = (1);
They are, in effect, identical to these lines:...
Populating a ListView using an ArrayList?
...resource.
However the TextView is referenced, it will be filled with the toString() of each object in the array. You can add lists or arrays of custom objects. Override the toString() method of your objects to determine what text will be displayed for the item in the list.
To use something other tha...