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How to lock compiled Java classes to prevent decompilation?
...external black box to handle encryption/decryption, like dongles, remote authentication servers, etc. But even then, given that the user has full access to their own system, this only makes things difficult, not impossible -unless you can tie your product directly to the functionality stored in the ...
Can anonymous class implement interface?
...g to get there.
Back in 2008 I was writing a custom LINQ provider for my then employer, and at one point I needed to be able to tell "my" anonymous classes from other anonymous ones, which meant having them implement an interface that I could use to type check them. The way we solved it was by usi...
How to change the text on the action bar
...: Styling the Action Bar
And if you want to generate styles for ActionBar then this Style Generator tool can help you out.
=================================================================================
Old: Earlier days:
=> Normal way,
you can Change the Title of each screen (i.e. Activit...
MongoDB and “joins” [duplicate]
...most described. Just save a document's _id in another document's other_id, then write your own function to resolve the relationship. The other solution is to use DBRefs as described on the manual page above, which will make MongoDB resolve the relationship client-side on demand. Which solution you c...
receiving error: 'Error: SSL Error: SELF_SIGNED_CERT_IN_CHAIN' while using npm
...e way around the underlying issue is to use known registrars, install, and then stop using known registrars. As suggested by jnylen:
npm config set ca ""
npm install npm -g
npm config delete ca
share
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...
Why use the yield keyword, when I could just use an ordinary IEnumerable?
...m immediately to the next step. If that "next step" contains a ".Take(10)" then the "yield" version will only process the first 10 items and forget about the rest. The "list" code would have processed everything.
This means that you see the most difference when you need to do a lot of processing an...
The object 'DF__*' is dependent on column '*' - Changing int to double
...NOT NULL,
rating INT NOT NULL CONSTRAINT rating_default DEFAULT 100
);
Then you get a nicely named constraint that's easier to reference when you are altering said table.
ALTER TABLE Movie DROP CONSTRAINT rating_default;
ALTER TABLE Movie ALTER COLUMN rating DECIMAL(2) NOT NULL;
-- sets up a ne...
Understanding prototypal inheritance in JavaScript
...nd the second the constructor. The lookup for functions is constructor and then prototype. So for your lookup of Drive() it finds it regardless if it is in the constructor or in the prototype. Using the prototype is more efficient because usually you need a function only once per type.
The new call...
Retrieve filename from file descriptor in C
...was when it was opened — however, if the file was moved or deleted since then, it may no longer be accurate (although Linux can track renames in some cases). To verify, stat the filename given and fstat the fd you have, and make sure st_dev and st_ino are the same.
Of course, not all file descrip...
Why doesn't adding CORS headers to an OPTIONS route allow browsers to access my API?
...l to the next matching route. If Express is matching app.get route first, then it won't continue onto the options route unless you do this (note use of next):
app.get('somethingelse', function(req, res, next) {
//..set headers etc.
next();
});
In terms of organising the CORS stuff, I pu...