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What are the disadvantages to declaring Scala case classes?
....Sobral True, but the exact implementation of equals() (which fields it is based on) isn't necessarily in the contract. At least, you could explicitly exclude it from the contract when you first write the class.
– herman
Oct 6 '13 at 9:13
...
Best practice: AsyncTask during orientation change
...onInstance() either. This is less modular and not well-suited for Fragment-based applications.
You can read my article describing how to handle configuration changes using retained Fragments. It solves the problem of retaining an AsyncTask across a rotation change nicely. You basically need to host...
Why can't I use Docker CMD multiple times to run multiple services?
I have built a base image from Dockerfile named centos+ssh. In centos+ssh's Dockerfile, I use CMD to run ssh service.
5 Ans...
How to delete a file via PHP?
...img/tasks/" . 'image.jpg');
The dirname(__FILE__) section prints out the base path to your project. The /img/tasks/ are two folders down from my base path. And finally, there's my image I want to delete which you can make into anything you need to.
With this I have not had any problem getting to ...
What is the difference between javac and the Eclipse compiler?
...
Eclipse's built-in compiler is based on IBM's Jikes java compiler. (Note that Eclipse also started its life at IBM). It is completely independent of Sun's Java compiler in the JDK; it is not a wrapper around Sun's javac.
Jikes has existed for a long time,...
Managing CSS Explosion
...oney well spent). There are free ones around as well (e.g. Code Beautifier based on CSS Tidy, an open-source tool).
Build sensible classes. See below for a few notes on this.
Use semantics, avoid DIV soup - use <ul>s for menus, for example.
Define everything on as low a level as possible (e.g...
When do you use POST and when do you use GET?
... a file as input, does some processing on the file (example - extract data based on regex) and returns JSON data, then can I use GET request to upload a file to the server. Or should I use POST request?
– variable
Dec 5 '19 at 11:24
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How to extract the first two characters of a string in shell scripting?
...st efficient method, if you're using the bash shell (and you appear to be, based on your comments), is to use the sub-string variant of parameter expansion:
pax> long="USCAGol.blah.blah.blah"
pax> short="${long:0:2}" ; echo "${short}"
US
This will set short to be the first two characters of...
Is there a way to 'uniq' by column?
...
To consider multiple column.
Sort and give unique list based on column 1 and column 3:
sort -u -t : -k 1,1 -k 3,3 test.txt
-t : colon is separator
-k 1,1 -k 3,3 based on column 1 and column 3
share
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getViewTypeCount and getItemViewType methods of ArrayAdapter
...st has the same layout, you don't need to worry about view types. In fact, BaseAdapter.java provides a default behavior for all adapters:
public int getItemViewType(int position) {
return 0;
}
public int getViewTypeCount() {
return 1;
}
This indeed provides you with the same view type fo...