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What is a NullPointerException, and how do I fix it?
...n the most trivial cases, the compiler will catch the problem and let you know that "num may not have been initialized," but sometimes you may write code that does not directly create the object.
For instance, you may have a method as follows:
public void doSomething(SomeObject obj) {
//do someth...
How to describe “object” arguments in jsdoc?
...
By now there are 4 different ways to document objects as parameters/types. Each has its own uses. Only 3 of them can be used to document return values, though.
For objects with a known set of properties (Variant A)
/**
* @par...
Passing by reference in C
...ass-by-reference
We change the piece of code slightly. param is a pointer now.
#include <stdio.h>
void function2(int *param) {
printf("I've received value %d\n", *param);
(*param)++;
}
int main(void) {
int variable = 111;
function2(&variable);
printf("variable %d\n...
Mongoose and multiple database in single node.js project
...goose = require("./foo_db_connect.js"); // bar_db_connect.js for bar app
Now, you can access multiple databases with mongoose.
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Stopping fixed position scrolling at a certain point?
... it what i thought changing the positioning at certain points, il let you know how i get on thanks!
– Louise McComiskey
May 5 '11 at 19:34
1
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Programmatically Determine a Duration of a Locked Workstation?
...
I know this is an old question but i have found a method to get the Lock State for a given session.
I found my answer here but it was in C++ so i translated as much as i can to C# to get the Lock State.
So here goes:
static c...
What is the correct way of using C++11's range-based for?
...
The above code prints the elements (ints) in the vector:
1 3 5 7 9
Now consider another case, in which the vector elements are not just simple integers,
but instances of a more complex class, with custom copy constructor, etc.
// A sample test class, with custom copy semantics.
class X
{
pu...
Rails: create on has_one association
...ser = current_user
@shop = Shop.create(params[:shop])
@user.shop = @shop
Now here's why your version did not work:
You probably thought that this might work because if User had a has_many relation to Shop, @user.shops.create(params[:shop]) would work. However there is a big difference between has...
How can I make a multipart/form-data POST request using Java?
...Z, I've made the above change in my code, however, I am facing a new issue now - my REST endpoint is not accepting the request. It's expecting the following parameters: ~@PathVariable final String id, @RequestParam("image") final MultipartFile image, @RequestParam("l") final String l, @Reque...
JavaScript frameworks to build single page applications [closed]
...r, CanJS, Spine
Didn't really look too closely at any of these. Though I know Spine is a similar framework to Backbone with explicit Controller objects, and is written in CoffeeScript.
Afterword
As I mentioned, we ended up using Knockout because, for our project, focusing on view binding was more ...