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Is the pImpl idiom really used in practice?
... of a class and dynamically allocate them to decrease the compilation time (and also hide the private implementations in a better manner).
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Measuring execution time of a function in C++
I want to find out how much time a certain function takes in my C++ program to execute on Linux . Afterwards, I want to make a speed comparison . I saw several time function but ended up with this from boost. Chrono:
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Code snippet or shortcut to create a constructor in Visual Studio
...ctor for the class you are in:
public MyClass()
{
}
It seems that in some cases you will have to press TAB twice.
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What are the most-used vim commands/keypresses?
...up once, with the commands I actually use regularly:
References
vim documentation online
advanced vim tips
more useful tips and graphical cheat sheet
General
Nearly all commands can be preceded by a number for a repeat count. eg. 5dd delete 5 lines
<Esc> gets you out of any mode and bac...
Google Espresso or Robotium [closed]
...ure: I am one of Espresso's authors.
Both Espresso and Robotium are instrumentation-based frameworks, meaning they use Android Instrumentation to inspect and interact with Activities under test.
At Google, we started out by using Robotium because it was more convenient than stock instrumentation (...
How to make RatingBar to show five stars
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My requirement is setting ratingbar to fill parent or match parent but fixed stars i.e. 5. how to do it? is it possible?
– Prashanth Debbadwar
Nov 27 '15 at 11:51
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How to check whether a script is running under Node.js?
... I'm using defines module.exports, so this solution would incorrectly tell me I'm in node.
– Mark Melville
Dec 31 '12 at 23:02
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How to show line number when executing bash script
...ipt would stop when error occurs. However, it's still rather difficult for me to locate which line did the execution stop in order to locate the problem.
Is there a method which can output the line number of the script before each line is executed?
Or output the line number before the command exhibi...
Get/pick an image from Android's built-in Gallery app programmatically
...age URI
*/
public String getPath(Uri uri) {
// just some safety built in
if( uri == null ) {
// TODO perform some logging or show user feedback
return null;
}
// try to retrieve the image from the media store ...
MongoDB Show all contents from all collections
...the database/collection you want to use as follows:
show dbs
use <db name>
show collections
choose your collection and type the following to see all contents of that collection:
db.collectionName.find()
More info here on the MongoDB Quick Reference Guide.
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