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How do I reattach to a detached mosh session?
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and reattach to the screen session, which still exists.
screen -r
Now, htop (or whatever process was running) is back just as it was without interruption.This is especially useful for running upgrades or other processes that would leave the server in a messy, unknown state if suddenly inter...
Renaming branches remotely in Git
...work. Earth Engine's way: always remember to check, or you lose data. I know which one I'd pick.
– Doradus
Oct 27 '15 at 15:01
2
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Function return value in PowerShell
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With PowerShell 5 we now have the ability to create classes. Change your function into a class, and return will only return the object immediately preceding it. Here is a real simple example.
class test_class {
[int]return_what() {
W...
sqlalchemy IS NOT NULL select
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The other answer is the preferred answer now; it also avoids many IDEs including PyCharm from generating warnings.
– Antti Haapala
Oct 6 '16 at 7:21
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Visual Studio 2012 Web Publish doesn't copy files
...a fresh Visual Studio 2012 project. It published over FTP in the past, but now when I try to Publish it does exactly as above - it pretends to, says it was successful, and pushes nothing. It does build the output to the obj dir, but it never actually copies it to the server. The change Configuration...
Why are local variables not initialized in Java?
... Why complicate things? Write the try-finally block this way, and you KNOW the variable has a valid value. No null-checking required.
– Rob Kennedy
Jan 6 '09 at 16:09
1
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Check if my app has a new version on AppStore
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Here is a simple code snippet that lets you know if the current version is different
-(BOOL) needsUpdate{
NSDictionary* infoDictionary = [[NSBundle mainBundle] infoDictionary];
NSString* appID = infoDictionary[@"CFBundleIdentifier"];
NSURL* url = [NSURL URL...
How to define optional methods in Swift protocol?
... implementation which just returns true — it's fine at the first glance. Now, consider the following pseudo code:
final class SomeParser {
func parse(data: Data) -> [Any] {
if /* delegate.validate(value:) is not implemented */ {
/* parse very fast without validating */
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What are the respective advantages/limitations of Amazon RDS vs. EC2 with MySQL? [closed]
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One thing that's important to know about the 4 hour maintenance window is that your server is not down for 4 hours a week! That's just when they'll do maintenance IF there is maintenance to be done. I've had RDS servers running for months and months with z...
Rails - Validate Presence Of Association?
... ActiveRecord::Base
has_one :profile
end
This way, Profile.create will now fail. I have to use user.create_profile or associate a user before saving a profile.
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