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:: (double colon) operator in Java 8
...nterface with just one abstract method.
Examples of functional interfaces include Runnable, Callable, and ActionListener.
Function above is a functional interface with just one method: apply. It takes one argument and produces a result.
The reason why ::s are awesome is that:
Method referen...
MySQL Creating tables with Foreign Keys giving errno: 150
...
This includes things like int(11) unsigned NOT NULL vs int(11) NOT NULL.
– Glen Solsberry
May 1 '13 at 20:37
4...
Can PostgreSQL index array columns?
...r Postgres 11. The manual:
... the standard distribution of PostgreSQL includes a GIN operator
class for arrays, which supports indexed queries using these
operators:
<@
@>
=
&&
The complete list of built-in operator classes for GIN indexes in the standard distribution is h...
How to prevent browser to invoke basic auth popup and handle 401 error using Jquery?
... the response either does not contain a 401 status code or if it does, not include the WWW-Authenticate: Basic header. Since changing the status code is not very semantic and undesirable, a good approach is to remove the WWW-Authenticate header. If you can't or don't want to modify your web server a...
Do login forms need tokens against CSRF attacks?
...u set up CORS wrong, the attacker can trigger a form submission (which may include an existing CSRF token in cookies) but has no way of knowing the token to send the required second copy (e.g. in the body/headers). So CSRF code will reject.
– natevw
Jan 25 '14 ...
What is a bus error?
...ss.
A minimal example that produces it because ftruncate was forgotten:
#include <fcntl.h> /* O_ constants */
#include <unistd.h> /* ftruncate */
#include <sys/mman.h> /* mmap */
int main() {
int fd;
int *map;
int size = sizeof(int);
char *name = "/a";
shm_u...
How should I print types like off_t and size_t?
... See VS2013 Size specification
As for off_t, it is defined as long in VC\include\sys\types.h.
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How can I convert spaces to tabs in Vim or Linux?
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I've updated my answer to include an explanation as to why I use %. The F2 mapping is exactly as it's typed.
– Johnsyweb
Feb 2 '12 at 1:45
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How do I call a dynamically-named method in Javascript?
...aries such as jQuery do. This is useful for reducing conflicts if/when you include multiple separate utility libraries in the same page, and (other parts of your design permitting) can make it easier to reuse the code in other pages.
You could also use an object like so, which you might find cleane...
How can I record a Video in my Android App.?
...o, and Rich Media Apps for Smartphones and Tablets
Also, do not forget to include these permissions in manifest:
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.per...