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What is NODE_ENV and how to use it in Express?
...ion or not. You can see this if you put these lines in an Express app, and then make a HTTP GET request to /error:
app.get('/error', function(req, res) {
if ('production' !== app.get('env')) {
console.log("Forcing an error!");
}
throw new Error('TestError');
});
app.use(function (req, res...
C pointers : pointing to an array of fixed size
...e size). If you really need to be able to process arrays of run-time size, then the proper way to pass such an array is by a pointer to its first element with the concrete size supplied by an additional parameter
void foo(char p[], unsigned plen);
Actually, in many cases it is very useful to be a...
How can I use different certificates on specific connections?
... JVM
Retrieve the public key:
$openssl s_client -connect dev-server:443, then create a file dev-server.pem that looks like
-----BEGIN CERTIFICATE-----
lklkkkllklklklklllkllklkl
lklkkkllklklklklllkllklkl
lklkkkllklk....
-----END CERTIFICATE-----
Import the key: #keytool -import -alias dev-server...
What are the best practices for JavaScript error handling?
...y fail (because there is no other way to check that it should work by if...then... blocks)
And also when you want to debug without bothering the final user
Eventually, javascript experts may have other elements to give.
my 2 cents to the box,
Regards,
Max
...
What's the difference between SoftReference and WeakReference in Java?
...ike this:
WeakReference weakWidget = new WeakReference(widget);
and then
elsewhere in the code you can use
weakWidget.get() to get the actual
Widget object. Of course the weak
reference isn't strong enough to
prevent garbage collection, so you may
find (if there are no strong
re...
Relationship between SciPy and NumPy
... to use the submodule libraries of SciPy for their relevant use cases, and then for the core NumPy operations to import NumPy specifically (instead of the top level of SciPy which you would otherwise need to import). For some reason this is stated by others as well as the SciPy documentation itself...
How to use concerns in Rails 4
...he reference to a separate class instance that handles that functionality. Then you have smaller, neater classes that do one thing...
– A Fader Darkly
Nov 26 '15 at 15:33
...
Further understanding setRetainInstance(true)
...reated() and that layout contains a fragment with setRetainInstance(true), then when the activity is recreated it will be searched for again using its id or tag.
Secondly, for UI-less fragments, it states
To add a fragment without a UI, add the fragment from the activity
using add(Fragment, S...
Does use of final keyword in Java improve the performance?
... compile time, what is the whole point of writing if blocks in first place then for this scenario where the IF-CONDITIONS are not necessary and not making any sense? In my opinion, even if this boosts performance, this is wrong code in first place and can be optimized by developer himself rather tha...
Rails update_attributes without save?
...s the column names).
If guard_protected_attributes is true (the default), then sensitive attributes can be protected from this form of mass-assignment by using the attr_protected macro. Or you can alternatively specify which attributes can be accessed with the attr_accessible macro. Then all the at...