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Comments in Android Layout xml
...nnot use it inside a tag.
For example:
<TextView
android:text="@string/game_title"
<!-- This is a comment -->
android:layout_height="wrap_content"
android:layout_width="fill_parent"/>
is wrong and will give following error
Element type "TextView" must be followed ...
pandas GroupBy columns with NaN (missing) values
...l stumbles over this--another workaround is to convert via .astype(str) to string before grouping. That will conserve the NaN's.
df = pd.DataFrame({'a': ['1', '2', '3'], 'b': ['4', np.NaN, '6']})
df['b'] = df['b'].astype(str)
df.groupby(['b']).sum()
a
b
4 1
6 3
nan 2
...
How do I list all files of a directory?
...vious code
The function now returns a list of file that matched with the string you pass as argument
import glob
def filesearch(word=""):
"""Returns a list with all files with the word/extension in it"""
file = []
for f in glob.glob("*"):
if word[0] == ".":
if f.e...
Rename specific column(s) in pandas
...umns' (the axis argument was introduced in v0.21.
Index.str.replace() for string/regex based replacement.
If you need to rename ALL columns at once,
DataFrame.set_axis() method with axis=1. Pass a list-like sequence. Options are available for in-place modification as well.
rename with axis=1
d...
Adding Core Data to existing iPhone project
...h the applicationDoumentsDirectory method should return NSURL instead of NSString.
– NSRover
May 9 '14 at 12:29
9
...
'UserControl' constructor with parameters in C#
...al class MyUserControl : UserControl
{
private int _parm1;
private string _parm2;
private MyUserControl()
{
InitializeComponent();
}
public MyUserControl(int parm1, string parm2) : this()
{
_parm1 = parm1;
_parm2 = parm2;
}
}
As this way th...
AngularJS : Why ng-bind is better than {{}} in angular?
...laim. What is done on every $digest though is that the interpolated result string is calculated. It's just not assigned to the text node unless it changes.
– Matti Virkkunen
Nov 24 '14 at 2:47
...
How do I get the full path to a Perl script that is executing?
...mod_perl spectacularly, producing worthless output such as '.' or an empty string. In such environments, I use __FILE__ and get the path from that using the File::Basename module:
use File::Basename;
my $dirname = dirname(__FILE__);
...
What does “#define _GNU_SOURCE” imply?
...different Unix versions, so there is no single right content for, say, <string.h> — there are many standards (xkcd).
There's a whole set of macros to pick your favorite one, so that if your program expects one standard, the library will conform to that.
...
Use 'class' or 'typename' for template parameters? [duplicate]
...s expected T will always be a class, with "typename" if other types (int, char* whatever) may be expected. Consider it a usage hint.
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