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private[this] vs private
In Scala I see such feature as object-private variable. From my not very rich Java background I learnt to close everything (make it private) and open (provide accessors) if necessary. Scala introduces even more strict access modifier. Should I always use it by default? Or should I use it only in som...
Using ZXing to create an Android barcode scanning app [duplicate]
...ode scanning.
The easiest way to do this is to call the ZXing SCAN Intent from your application, like this:
public Button.OnClickListener mScan = new Button.OnClickListener() {
public void onClick(View v) {
Intent intent = new Intent("com.google.zxing.client.android.SCAN");
int...
Rails formatting date
... the date. (http://ruby-doc.org/core-2.2.1/Time.html#method-i-strftime).
From APIdock:
%Y%m%d => 20071119 Calendar date (basic)
%F => 2007-11-19 Calendar date (extended)
%Y-%m => 2007-11 Calendar date, r...
GDB missing in OS X v10.9 (Mavericks)
... Hi Mr. Catfish, I got it to work. It just required compiling it from source with the correct ./configure command :) thx!
– l'L'l
Oct 24 '13 at 6:23
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Windows 7, 64 bit, DLL problems
...will retrieve an error (missing DLL files...).
Now, copy all the DLL files from Qt (in my case they were in C:\Qt\Qt5.1.1\5.1.1\msvc2012_64_opengl\bin) to this folder.
Try to execute again, it will probably works fine.
Start to delete progressively and try every time your executable still works, try...
AES vs Blowfish for file encryption
...e that has the key in it, or maybe blackmailing your friend to copy a file from your computer. Those are going to be where you are most vulnerable, not the algorithm.
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Principles for Modeling CouchDB Documents
...n UTF-8 collation ("a" comes before "b"). You can also output complex keys from your map/reduce as JSON arrays: ["a", "b", "c"]. Doing that would allow you to include a "tree" of sorts built out of array keys. Using your example above, we can output the post_id, then the type of thing we're referenc...
How do I recover/resynchronise after someone pushes a rebase or a reset to a published branch?
...mote branch originally was, then you use that to replay your local commits from that point onward onto rebased remote branch.
Rebasing is like violence: if it doesn’t solve your problem, you just need more of it. ☺
You can do this without the bookmark of course, if you look up the pre-rebase o...
Using i and j as variables in Matlab
...that recommending. Here's the extent of MathWorks' actual recommendations, from the current release documentation for i:
Since i is a function, it can be overridden and used as a variable. However, it is best to avoid using i and j for variable names if you intend to use them in complex arithmet...
How to run Node.js as a background process and never die?
...basic usage
$ npm install forever -g
$ forever start app.js
# you can run from a json configuration as well, for
# more complex environments or multi-apps
$ forever start development.json
Init scripts:
I'm not go into detail about how to write a init script, because I'm not an expert in this sub...