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How Can I Download a File from EC2 [closed]
... @gideon That definitively should work as expected (i.e. recursively copy all files from /srv/www/myapp/ to the local machine). Wild guess - are you running scp from your ec2 server perhaps? If yes, you need to run it from your local machine (i.e. the machine you want to copy files to).
...
Omitting the second expression when using the if-else shorthand
...o an option:
x==2 && dosomething();
dosomething() will only be called if x==2 is evaluated to true. This is called Short-circuiting.
It is not commonly used in cases like this and you really shouldn't write code like this. I encourage this simpler approach:
if(x==2) dosomething();
You...
Launching Spring application Address already in use
... @Junchen Lui That's because it is just a workaround. If you do this all the time, you will have a lot of unused tomcats running. Better fix the error in first place.
– Stimpson Cat
Jan 9 '18 at 8:12
...
Is Random class thread safe?
...share one instance of the Random class between multiple threads? And to call nextInt(int) from multiple threads in particular?
...
How to convert C# nullable int to int
...
The other answers so far are all correct; I just wanted to add one more that's slightly cleaner:
v2 = v1 ?? default(int);
Any Nullable<T> is implicitly convertible to its T, PROVIDED that the entire expression being evaluated can never result in...
How to use double or single brackets, parentheses, curly braces
...veral more
Also, brace expansions create lists of strings which are typically iterated over in loops:
$ echo f{oo,ee,a}d
food feed fad
$ mv error.log{,.OLD}
(error.log is renamed to error.log.OLD because the brace expression
expands to "mv error.log error.log.OLD")
$ for num in {000..2}; do ech...
What exactly is Python's file.flush() doing?
...
There's typically two levels of buffering involved:
Internal buffers
Operating system buffers
The internal buffers are buffers created by the runtime/library/language that you're programming against and is meant to speed things up by ...
Throwing the fattest people off of an overloaded airplane.
...ngers)
{
if (totalWeight < targetTotal)
{
// unconditionally add this passenger
myHeap.Add(pass);
totalWeight += pass.Weight;
}
else if (pass.Weight > myHeap.Peek().Weight)
{
// If this passenger is heavier than the lightest
// passen...
Why would adding a method add an ambiguous call, if it wouldn't be involved in the ambiguity
...comparisons of the three remaining candidates. There are three such pairs. All of them have identical parameter lists once we strip off the omitted optional parameters, which means that we have to go to the advanced tiebreaking round described in section 7.5.3.2 of the specification.
Which is bette...
How to clean project cache in Intellij idea like Eclipse's clean?
...
Depending on the version you are running. It is basically the same just go to
File -> Invalidate caches, then restart Intellij
or
File -> Invalidate caches / Restart
The main difference is that in older versions you had to manually restart as cache files are not removed...