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Android equivalent to NSNotificationCenter
In the process of porting an iPhone application over to android, I am looking for the best way to communicate within the app. Intents seem to be the way to go, is this the best (only) option? NSUserDefaults seems much lighter weight than Intents do in both performance and coding.
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Can Android do peer-to-peer ad-hoc networking?
...droid in ad-hoc peer-to-peer wifi mode? For example, I would like to have one phone broadcast a message, and have all peers in the network receive the broadcast, without having a server. I would like to use wifi since bluetooth range is more limited.
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Ruby, Difference between exec, system and %x() or Backticks
...s case the string will be subject to shell expansion. When using more than one argument, then the first one is used to execute a program and the following are provided as arguments to the program to be invoked.
Open3.popen3
Sometimes the required information is written to standard input or standar...
WPF: How to display an image at its original size?
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Here is a similar question. Generally setting Stretch="None" is enough.
It is also very important what DPI has the image set in metadata. It took me quite a while before figuring out that if the image's DPI is different from the monitor's DPI (usually 96), WPF will automatically ...
SQL Server: Database stuck in “Restoring” state
... Jul 28 '09 at 15:21
Evan AndersonEvan Anderson
11.7k33 gold badges1818 silver badges1313 bronze badges
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What is the 'dynamic' type in C# 4.0 used for?
...variable reuse can come in handy or clean up a dirty piece of legacy code. One simple case I run into often is constantly having to cast between decimal and double.
decimal foo = GetDecimalValue();
foo = foo / 2.5; // Does not compile
foo = Math.Sqrt(foo); // Does not compile
string bar = foo.ToStr...
Get visible items in RecyclerView
...e is some pattern you can develop in using onBindViewHolder to track which ones are actually on-screen while a user scrolls.
– RoundSparrow hilltx
Apr 22 '15 at 15:21
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How to measure time in milliseconds using ANSI C?
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It's worth noting that timeval::tv_usec is always under one second, it's looping. I.e. in order to take differences of time larger than 1 sec, you should: long usec_diff = (e.tv_sec - s.tv_sec)*1000000 + (e.tv_usec - s.tv_usec);
– Alexander Malakhov
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What is the at sign (@) in a batch file and what does it do?
One remotely familiar with windows/dos batch scripting will recognize this line:
2 Answers
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Use of an exclamation mark in a Git commit message via the command line
...lamation mark on a new line, then close off the commit message. Found that one out by accident one day.
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