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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
...
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
...
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
...
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...
How does facebook, gmail send the real time notification?
...ever, this can be pretty network intensive, and you often make pointless requests, because nothing has happened.
The way Facebook does it is using the comet approach, rather than polling on an interval, as soon as one poll completes, it issues another one. However, each request to the script on th...
Using awk to remove the Byte-order mark
...ecord is printed.
Enjoy!
-- ADDENDUM --
Unicode Byte Order Mark (BOM) FAQ includes the following table listing the exact BOM bytes for each encoding:
Bytes | Encoding Form
--------------------------------------
00 00 FE FF | UTF-32, big-endian
FF FE 00 00 | UTF-32, little-endian
F...
Inline SVG in CSS
...100%' height='100%'/></svg>");
}
http://jsfiddle.net/6WAtQ/
(Note that the SVG content needs to be url-escaped for this to work, e.g. # gets replaced with %23.)
This works in IE 9 (which supports SVG). Data-URLs work in older versions of IE too (with limitations), but they don...