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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...
How to drop a PostgreSQL database if there are active connections to it?
... all postgresql processes that are running by tying this command
sudo /etc/init.d/postgresql restart
type the command
bg to check if other postgresql processes are still running
then followed by dropdb dbname to drop the database
sudo /etc/init.d/postgresql restart
bg
dropdb dbname
Thi...
Convert RGB to RGBA over white
...u can solve:
a = (x - x')/(255 - x') x' = (x - 255 a)/(1 - a)
Etc. In real values this has infinitely many solutions, just plug in any real number a, but the problem is to find a number for which the discretization error is minimal.
...
Why doesn't a python dict.update() return the object?
... the keyword ones, and bereft of the ** form -- dict(award_dict, name=name etc etc).
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Passing multiple variables in @RequestBody to a Spring MVC controller using Ajax
...p<String, String> is: API documentation libraries (swagger/springfox etc) probably will not be able to parse your request/response schema from your source code.
– stratovarius
Nov 15 '18 at 9:30
...
How can I count all the lines of code in a directory recursively?
...ent, add it to one of the initialization files (~/.bashrc, ~/.bash_profile etc.).
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Check if directory mounted with bash
...util-linux package and, according to the manual:
is able to search in /etc/fstab, /etc/mtab or /proc/self/mountinfo
So it actually searches more things than mountpoint. It also provides the convenient option:
-M, --mountpoint path
Explicitly define the mountpoint file or directory. Se...
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;
...
How can you strip non-ASCII characters from a string? (in C#)
...ut in plain english your RegEx pattern. In other words, "the ^ does this", etc...
– Metro Smurf
Sep 23 '08 at 22:45
47
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Should I add the Visual Studio .suo and .user files to source control?
...annoyance is that the debug parameters (execution path, deployment target, etc.) are stored in one of those files (don't know which), so if you have a standard for them you won't be able to 'publish' it via SCM for other developers to have the entire development environment 'ready to use'.
...