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Is errno thread-safe?
...l
errno is defined by including the
header , as specified by the
C Standard ... For each thread of a
process, the value of errno shall not
be affected by function calls or
assignments to errno by other threads.
Also see http://linux.die.net/man/3/errno
errno is thread-local; settin...
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
...tions.
DB server has run out of connections.
Something in between Java and DB is blocking connections, e.g. a firewall or proxy.
To solve the one or the other, follow the following advices:
Verify and test them with ping.
Refresh DNS or use IP address in JDBC URL instead.
...
How to make an alert dialog fill 90% of screen size?
I can create and display a custom alert dialog just fine but even so I have android:layout_width/height="fill_parent" in the dialog xml it is only as big as the contents.
...
How can I add an empty directory to a Git repository?
...esign of the git index
(staging area) only permits files to
be listed, and nobody competent enough
to make the change to allow empty
directories has cared enough about
this situation to remedy it.
Directories are added automatically
when adding files inside them. That
is, director...
Custom CSS Scrollbar for Firefox
...verflow.com/a/54101063/405015
https://stackoverflow.com/a/53739309/405015
And this for background info: https://bugzilla.mozilla.org/show_bug.cgi?id=1460109
There's no Firefox equivalent to ::-webkit-scrollbar and friends.
You'll have to stick with JavaScript.
Plenty of people would like this feat...
Declaring an unsigned int in Java
...on is that most operations (such as addition, subtraction, multiplication, and left shift) are identical on a binary level for signed and unsigned integers. A few operations (division, right shift, comparison, and casting), however, are different. As of Java SE 8, new methods in the Integer class al...
What exactly is Java EE?
I have been doing Java SE for some years now and moving on to Java EE. However, I have some trouble understanding some aspects of Java EE.
...
Why should I avoid using Properties in C#?
...nt book, CLR Via C#, Jeffrey Richter said that he doesn't like properties, and recommends not to use them. He gave some reason, but I don't really understand. Can anyone explain to me why I should or should not use properties?
In C# 3.0, with automatic properties, does this change?
...
What is the etymology of 'slug'? [closed]
Is slug a completely arbitrary word? Or does it stand for something? I used the word in a conversation with someone and when they asked me why it's called that I realized I didn't know.
...
How to add semicolon after method call when inside parameter list in IntelliJ IDEA?
...r Windows or Linux users, Ctrl+Shift+Enter.
For macOS/OS X users, ⌘ Command+⇧ Shift+Enter.
That finishes the statement you're currently writing. Try it in a few different situations, like in if statements, for loops etc, and you'll see that it'll complete the line and open some curly braces fo...