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How can I access and process nested objects, arrays or JSON?
...
const data = {
code: 42,
items: [{
id: 1,
name: 'foo'
}, {
id: 2,
name: 'bar'
}]
};
Let's assume we want to access the name of the second item.
Here is how we can do it step-by-step:
As we can see data is an object, hence we can access its prope...
What are the uses of “using” in C#?
...
using, in the sense of
using (var foo = new Bar())
{
Baz();
}
Is actually shorthand for a try/finally block. It is equivalent to the code:
var foo = new Bar();
try
{
Baz();
}
finally
{
foo.Dispose();
}
You'll note, of course, that the first snippet...
How to set default values in Rails?
...e ActiveRecord Callbacks).
So, IMO it should look something like:
class Foo < ActiveRecord::Base
after_initialize :assign_defaults_on_new_Foo
...
attr_accessible :bar
...
private
def assign_defaults_on_new_Foo
# required to check an attribute for existence to weed out existing ...
Make the current commit the only (initial) commit in a Git repository?
...nity wiki
7 revs, 4 users 73%Fred Foo
3
...
Maven: How to include jars, which are not available in reps into a J2EE project?
...local repository.
For example:
mvn install:install-file -Dfile=/usr/jars/foo.jar -DpomFile=/usr/jars/foo.pom
mvn install:install-file -Dfile=/usr/jars/bar.jar -DpomFile=/usr/jars/bar.pom
or just
mvn install:install-file -Dfile=ojdbc14.jar -DgroupId=com.oracle -DartifactId=ojdbc14 -Dversion=10....
Typescript: difference between String and string
...
I've added an answer to clarify that "foo" vs new String("foo") isn't a new distinction introduced by TypeScript - I don't think it's helpful to call one a JS type and the other a TS type.
– Joe Lee-Moyet
Jan 25 '16 at 13:46...
How to persist a property of type List in JPA?
...List<String> yourList;
In the database your list will be stored as foo;bar;foobar and in your Java object you will get a list with those strings.
Hope this is helpful to someone.
share
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im...
How to make rounded percentages add up to 100%
... properly, here's my semi-obfuscated version using underscorejs:
function foo(l, target) {
var off = target - _.reduce(l, function(acc, x) { return acc + Math.round(x) }, 0);
return _.chain(l).
sortBy(function(x) { return Math.round(x) - x }).
map(function(x, i) { re...
How are strings passed in .NET?
...You are correct, but I think @roliu was referencing how a function such as Foo(string bar) could be thought of as Foo(char* bar) whereas Foo(ref string bar) would be Foo(char** bar) (or Foo(char*& bar) or Foo(string& bar) in C++). Sure, it's not how you should think of it everyday, but it ac...
How to do an instanceof check with Scala(Test)
... typecasting for free and leaves less room for error.
Example:
OuterType foo = blah
foo match {
case subFoo : SubType => {
subFoo.thingSubTypeDoes // no need to cast, use match variable
}
case subFoo => {
// fallthrough code
}
}
...