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What is the best way to check for Internet connectivity using .NET?
... this should work.
System.Net.WebClient
public static bool CheckForInternetConnection()
{
try
{
using (var client = new WebClient())
using (client.OpenRead("http://google.com/generate_204"))
return true;
}
catch
{
return false;
...
Efficiently test if a port is open on Linux?
... I want to embed the port checking code in a script on the server, under /etc/init.d/
– Aman Jain
Mar 7 '12 at 22:14
...
How should you build your database from source control?
...or each environment (ex. references to external systems, linked databases, etc)
How do you test that the deployment scripts will work as effectively against production as they do in test?
You test them on pre-production environment: test deployment on exact copy of production environment (database a...
find: missing argument to -exec
...
I really confused. find /etc/nginx -name '*.conf' -exec echo {} ; and find /etc/nginx -name '*.conf' -exec echo {}\; gave the same result. :(
– Kirby
Mar 14 '16 at 22:19
...
How do I show/hide a UIBarButtonItem?
...TextAttributes :- This works great on bar button items like "Done", "Save" etc. However, it does not work on items like Add, Trash symbol etc.(atleast not for me) since they are not texts.
use TintColor :- If I have a bar button item called "deleteButton" :-
To hide the button, I used the followin...
Calling a static method on a generic type parameter
... someParent
{
List<T> items=(List<T>)typeof(T).GetMethod("fetchAll").Invoke(null,new object[]{});
//do something with items
}
Where T is any class that has the static method fetchAll().
Yes, I'm aware this is horrifically slow and may crash if someParent doesn't force all of i...
Long list of if statements in Java
...() implements Command {
void exec() {
// ...
}
}
// etc etc
then build a Map<String,Command> object and populate it with Command instances:
commandMap.put("A", new CommandA());
commandMap.put("B", new CommandB());
then you can replace your if/else if chain with:
co...
Difference between OData and REST web services
...methods, URL conventions, media types,
payload formats and query options etc. OData also guides you about
tracking changes, defining functions/actions for reusable procedures
and sending asynchronous/batch requests etc. Additionally, OData
provides facility for extension to fulfil any custom...
Fixed Table Cell Width
A lot of people still use tables to layout controls, data etc. - one example of this is the popular jqGrid. However, there is some magic happening that I cant seem to fathom (its tables for crying out loud, how much magic could there possibly be?)
...
ssh: connect to host github.com port 22: Connection timed out
...guration data /home/ubuntu/.ssh/config
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug1: Connecting to github.com [13.234.176.102] port 22.
So I tried using an SSH connection made over the HTTPS port by editing the config fil...