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Spring @PostConstruct vs. init-method attribute
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@Donal Quite true . Was just providing info on how this works.
– Aravind A
Dec 15 '11 at 11:32
1
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What is meant by “managed” vs “unmanaged” resources in .NET?
...it's recommended you write your code thusly:
using (var connection = new SqlConnection("connection_string_here"))
{
// Code to use connection here
}
As this ensures that .Dispose() is called on the connection object, ensuring that any unmanaged resources are cleaned up.
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Why use static_cast(x) instead of (int)x?
...ometimes you do know that a pointer points to a given subtype, by means opaque to the compiler, and a static_cast is faster. In at least some environments, dynamic_cast requires optional compiler support and runtime cost (enabling RTTI), and you might not want to enable it just for a couple of check...
Intercept page exit event
...@mtmurdock, The second statement "var e = e || window.event;" means set e equal to the parameter e (if it's truthy) or window.event if not truthy. It will not be truthy if the parameter e is null.
– T Nguyen
Oct 16 '12 at 7:09
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What does the function then() mean in JavaScript?
... of promises.
If a handler returns a promise (makes another asynchronous request), then the next
handler (success or error) will be called only after that request is finished.
So the previous example code might translate to something like the following, using
promises and the $http service(in Angu...
Why does flowing off the end of a non-void function without returning a value not produce a compiler
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C99 and C++ standards don't require functions to return a value. The missing return statement in a value-returning function will be defined (to return 0) only in the main function.
The rationale includes that checking if every code path returns a value i...
How to rsync only a specific list of files?
... answered Jan 22 '16 at 11:01
Waqas KhanWaqas Khan
12911 silver badge33 bronze badges
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What are the differences between Deferred, Promise and Future in JavaScript?
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In light of apparent dislike for how I've attempted to answer the OP's question. The literal answer is, a promise is something shared w/ other objects, while a deferred should be kept private. Primarily, a deferred (which generally extends Promise) can resolve itself, while a promise might not b...
What is the difference between save and export in Docker?
...operating system.
It will pack the layers and metadata of all the chain required to build the image. You can then load this "saved" images chain into another docker instance and create containers from these images.
export will fetch the whole container : like a snapshot of a regular VM. Saves the O...
How do I find the most recent git commit that modified a file?
... -- <path>
This can be useful for getting the commit hash for subsequently using with git describe.
For example (in case it's useful for anyone)…
I create a current version id by considering the latest commit to change any source file (assuming you mark versions with tags like mycode-1.2...