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What do the f and t commands do in Vim?
... internal help, :h f and :h t. However, in this case, those entries are a bit cryptic without an example. Suppose we had this line (^ = cursor position):
The quick brown fox jumps over the lazy dog.
^
These commands find characters on a line. So fb would place the cursor here:
The quick brown...
Detect the Internet connection is offline?
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I recently had the opportunity to work a little bit on offline behaviour. The events are great to use, BUT ios safari will create problems. When you turn of the internet on your phone the offline/online events will be delayed by up to 2 seconds and that can be problematic ...
Setting log level of message at runtime in slf4j
...s not the case here? In principle yes, but in fact, the stack will grove a bit more even after this until the actual message is written out (in particular, logback has to be called at some point, an then the actual appender). I think it should be the appender's role to throw away non-interesting sta...
java: Class.isInstance vs Class.isAssignableFrom
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@Gili: You've got it a bit wrong there. Byte.class.isInstance(Comparable.class) is false because a Class object is not an instance of Byte. The correct comparison to Comparable.class.isAssignableFrom(Byte.class) is Comparable.class.isInstance((byte...
Downcasting shared_ptr to shared_ptr?
...r to use static_cast or dynamic_cast, and you wish you could have a little bit of both worlds. It is well known that dynamic_cast has a runtime overhead, but it is safer, whereas static_cast has no overhead at all, but it may fail silently. How nice it would be if you could use shared_dynamic_cast i...
How can I convert this foreach code to Parallel.ForEach?
I am a bit of confused about Parallel.ForEach .
What is Parallel.ForEach and what does it exactly do?
Please don't reference any MSDN link.
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Maven project.build.directory
In Maven, what does the project.build.directory refer to? I am a bit confused, does it reference the source code directory or the target directory in the Maven project?
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How to center an element horizontally and vertically
... the "Fullscreen" example above, I noticed that vertical align is always a bit too much near bottom of the screen (with resolution 1920x1080, the label is 20 pixels too low in the screen). I implemented approach #2 in my webpage and got the same problem even if the div isn't fullscreen. The problem ...
How to detect if my shell script is running through a pipe?
...es or process names are very unreliable heuristics. But could you expand a bit why the other heuristics are unfit for this purpose or what their problem is? For example I see no difference in the output of a stat call on /dev/stdin. And why does "${-}" or tty -s not work? I also looked into the sour...
UIDevice uniqueIdentifier deprecated - What to do now?
...the same when the user uninstalls and re-installs the app. This requires a bit of effort, since the most reliable per-device-identifier seems to be the MAC address. You could query the MAC and use that as UUID.
Edit: One needs to always query the MAC of the same interface, of course. I guess the be...