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How can I suppress all output from a command using Bash?
...ant error messages to be sent there, use one of (the first may not work in all shells):
scriptname &>/dev/null
scriptname >/dev/null 2>&1
scriptname >/dev/null 2>/dev/null
And, if you want to record the messages, but not see them, replace /dev/null with an actual file, such...
Combine multiple Collections into a single logical Collection?
...llections (e.g. 3 ArrayLists) as members of a class. Now, I want to expose all the elements to other classes so they can simply iterate over all elements (ideally, read only).
I'm using guava collections and I wonder how I could use guava iterables/iterators to generate a logical view on the interna...
One DbContext per web request… why?
...the DbContext caches data, it gets stale pretty soon. This will get you in all sorts of trouble when multiple users/applications work on that database simultaneously (which is very common of course). But I expect you already know that and just want to know why not to just inject a new instance (i.e....
How do you properly use namespaces in C++?
...
Namespaces are packages essentially. They can be used like this:
namespace MyNamespace
{
class MyClass
{
};
}
Then in code:
MyNamespace::MyClass* pClass = new MyNamespace::MyClass();
Or, if you want to always use a specific namespace, you can d...
Capturing mobile phone traffic on Wireshark
... suggestions:
For Android phones, any network: Root your phone, then install tcpdump on it. This app is a tcpdump wrapper that will install tcpdump and enable you to start captures using a GUI. Tip: You will need to make sure you supply the right interface name for the capture and this varies from...
Getting full JS autocompletion under Sublime Text
I just installed the Sublime Text under Windows Vista, and even following the advice given in this post , namely to explicitly set View > Syntax > JavaScript > JavaScript , I only see suggestions based on what I have previously typed. I even installed the SublimeCodeIntel plug-in , to no...
browser sessionStorage. share between tabs?
...nStorage data from one tab to another.
This code would need to exist on ALL tabs. It should execute before your other scripts.
// transfers sessionStorage from one tab to another
var sessionStorage_transfer = function(event) {
if(!event) { event = window.event; } // ie suq
if(!event.newValu...
Static Classes In Java
...ion by client code as it makes no sense to instantiate a static class
Make all the members and functions of the class static - Since the class cannot be instantiated no instance methods can be called or instance fields accessed
Note that the compiler will not prevent you from declaring an instance ...
Why is the clone() method protected in java.lang.Object?
...oneable is now largely regarded as a mistake (citation below). I would normally want to be able to make implementations of an interface Cloneable but not necessarily make the interface Cloneable (similar to the use of Serializable). This cannot be done without reflection:
ISomething i = ...
if (i i...
Globally override key binding in Emacs
How can I set a key binding that globally overrides and takes precedence over all other bindings for that key? I want to override all major/minor mode maps and make sure my binding is always in effect.
...