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When should we call System.exit in Java
...ile or shell script you'd be able to get this value and get an idea if the application was successful.
It would make a quite an impact if you called System.exit(0) on an application deployed to an application server (think about it before you try it).
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Run a callback only if an attribute has changed in Rails
I have the following association in my app:
3 Answers
3
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Most efficient way to concatenate strings?
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The StringBuilder.Append() method is much better than using the + operator. But I've found that, when executing 1000 concatenations or less, String.Join() is even more efficient than StringBuilder.
StringBuilder sb = new StringBuilder();
sb....
Breakpoints are crossed out, how can I make them valid?
...re encountering what I encounter about once per year with Eclipse. There's apparently a bug in eclipse that causes this "Skip All Breakpoints" feature to turn ON all by itself even though you didn't actually turn it on.
– user2080225
May 11 '17 at 15:42
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add created_at and updated_at fields to mongoose schemas
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UPDATE: (5 years later)
Note: If you decide to use Kappa Architecture (Event Sourcing + CQRS), then you do not need updated date at all. Since your data is an immutable, append-only event log, you only ever need event created date. Similar to the Lambda Architecture, described...
What is a .pid file and what does it contain?
...enario as well as any other scenario I can think of. I suspect they either appeared before procfs did or they're used as portability tool because procfs interfaces are different on e.g. Solaris are quite different from that on Linux.
– Shnatsel
Aug 28 '13 at 15...
What is an EJB, and what does it do?
...ers over the web or corporate network and somewhat less valuable for small apps within a department.
Reusing/Sharing Logic across multiple applications/clients with Loose Coupling.
EJBs can be packaged in their own jars, deployed, and invoked from lots of places.
They are common components. True,...
Node.js: what is ENOSPC error and how to solve?
...r 1 kB (double - on 64-bit). This comes out of kernel memory, which is unswappable. So, assuming you set the max at 524288, and all were used (improbable), you'd be using approx. 256MB/512MB of 32-bit/64-bit kernel memory.
– Murali Krishna
Apr 5 '17 at 11:19
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How to manually deprecate members
...precated)
func myFunc() {
// ...
}
Where * is the platform (iOS, iOSApplicationExtension, macOS, watchOS, tvOS, * for all, etc.).
You can also specify the version of the platform from which it was introduced, deprecated, obsoleted, renamed, and a message :
@available(iOS, deprecated:6.0)
fu...
findViewByID returns null
...yout file. I wish the compiler would make an error or big warning if this happens.
– tiktak
Jan 20 '13 at 12:28
Ding d...