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#ifdef replacement in the Swift language
.... Here's an example:
#if DEBUG
let a = 2
#else
let a = 3
#endif
Now, you must set the "DEBUG" symbol elsewhere, though. Set it in the "Swift Compiler - Custom Flags" section, "Other Swift Flags" line. You add the DEBUG symbol with the -D DEBUG entry.
As usual, you can set a different val...
getSupportActionBar from inside of Fragment ActionBarCompat
...n a v7 ActionBar that I would cast to if I needed the extra functionality. Now my Fragments have to be aware of what type of Activity they are hosted in.
– Paul
Aug 19 '13 at 18:48
...
Meaning of = delete after function declaration
...tion is a C++11 feature:
The common idiom of "prohibiting copying" can now be expressed
directly:
class X {
// ...
X& operator=(const X&) = delete; // Disallow copying
X(const X&) = delete;
};
[...]
The "delete" mechanism can be used for any function. For e...
Nested attributes unpermitted parameters
...
Seems there is a change in handling of attribute protection and now you must whitelist params in the controller (instead of attr_accessible in the model) because the former optional gem strong_parameters became part of the Rails Core.
This should look something like this:
class PeopleCo...
How does one reorder columns in a data frame?
... @user4050: you can also use df[,c(1,3,2,4:ncol(df))] when you don't know how many columns there are.
– arekolek
Mar 15 '16 at 14:28
1
...
How do I get the path of the current executed file in Python?
...the problem with missing __file__ had nothing to do with Unicode. I don't know why __file__ is not defined but I'm looking for a generic solution this will work an all cases.
– sorin
Apr 13 '10 at 21:29
...
Vim clear last search highlighting
... in Vim, I get all the occurrences highlighted. How can I disable that? I now do another search for something gibberish that can't be found.
...
How to select rows that have current day's timestamp?
...sert about 7k rows
('2013-02-08 20:01:12') ;
Lets try the 2 versions now.
Version 1 with DATE(timestamp) = ?
EXPLAIN
SELECT * FROM test
WHERE DATE(timestamp) = CURDATE() --- using DATE(timestamp)
ORDER BY timestamp ;
Explain:
ID SELECT_TYPE TABLE TYPE POSSIBLE_KEYS KEY...
Select DISTINCT individual columns in django?
...
The method described below is now available in django 1.4 and is nice if you need ProductOrder instance with field aware distinct ;-)
– Jonathan Liuti
Oct 16 '12 at 15:03
...
Programmatically access currency exchange rates [closed]
...change Rates project data has been moved away from GitHub.
It is available now at: http://openexchangerates.org/
Data in JSON format is available at: http://openexchangerates.org/latest.json
No access fees, no rate limits, No ugly XML - just free, hourly updated exchange rates in JSON format.
This ...