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How to pass objects to functions in C++?
...ne whether to pass by const reference or not.)
Passing by pointer is virtually never advised. Optional parameters are best expressed as a std::optional (boost::optional for older std libs), and aliasing is done fine by reference.
C++11's move semantics make passing and returning by value much more ...
How to run test cases in a specified file?
...red across multiple files, if I run go test <package_name> it runs all test cases in the package.
7 Answers
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Multiple Indexes vs Multi-Column Indexes
...ique key (an identity column I would recommend) as the first column.
Basically it helps your data insert at the end of the index and not cause lots of disk IO and Page splits.
Secondly, if you are creating other indexes on your data and they are constructed cleverly they will be reused.
e.g. ima...
How to avoid reverse engineering of an APK file?
...cker is able to change it in any way she or he finds it feasible. You basically can't protect your application from being modified. And any protection you put in there can be disabled/removed.
2. How can I protect all the app's resources, assets and source code so that hackers can't hack the A...
Uppercase or lowercase doctype?
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In HTML, the DOCTYPE is case insensitive. The following DOCTYPEs are all valid:
<!doctype html>
<!DOCTYPE html>
<!DOCTYPE HTML>
<!DoCtYpE hTmL>
In XML serializations (i.e. XHTML) the DOCTYPE is not required, but if you use it, DOCTYPE should be uppercase:
<!DOCTY...
What are OLTP and OLAP. What is the difference between them?
Actually what do they mean? All articles I find about them don't give me an idea, or my knowledge is too insufficient to understand it.
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chrome undo the action of “prevent this page from creating additional dialogs”
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No. But you should really use console.log() instead of alert() for debugging.
In Chrome it even has the advantage of being able to print out entire objects (not just toString()).
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how to reset
...ted in the comments obviously works, but if you look at the actual jQuery call it's pretty easy to see what jQuery is doing, just setting the value attribute to an empty string. So in "pure" JavaScript it would be:
document.getElementById("uploadCaptureInputFile").value = "";
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How to extend an existing JavaScript array with another array, without creating a new array
...ethod can take multiple arguments. You can use the spread operator to pass all the elements of the second array as arguments to .push:
>>> a.push(...b)
If your browser does not support ECMAScript 6, you can use .apply instead:
>>> a.push.apply(a, b)
Or perhaps, if you think i...
Trust Anchor not found for Android SSL Connection
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The solution of @Chrispix is dangerous! Trusting all certificates allows anybody to do a man in the middle attack! Just send ANY certificate to the client and it will accept it!
Add your certificate(s) to a custom trust manager like described in this post: Trusting all cer...