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How to keep index when using pandas merge
...
In [5]: a.reset_index().merge(b, how="left").set_index('index')
Out[5]:
col1 to_merge_on col2
index
a 1 1 1
b 2 3 2
c 3 4 NaN
Note that for some left merge operati...
Why is there “data” and “newtype” in Haskell? [duplicate]
... was True or False:
helloMe :: CoolBool -> String
helloMe (CoolBool _) = "hello"
Instead of applying this function to a normal CoolBool, let's throw it a curveball and apply it to undefined!
ghci> helloMe undefined
"*** Exception: Prelude.undefined
Yikes! An exception! No...
Which is the preferred way to concatenate a string in Python?
...
If you have multiple strings (n > 10) "".join(list_of_strings) is still faster
– Mikko Ohtamaa
Aug 29 '12 at 5:34
11
...
How to disassemble one single function using objdump?
...e.g., gdb -batch -ex 'disassemble main' /bin/ls
– hoc_age
Oct 17 '14 at 15:01
3
...
Cross-thread operation not valid: Control 'textBox1' accessed from a thread other than the thread it
...
The data received in your serialPort1_DataReceived method is coming from another thread context than the UI thread, and that's the reason you see this error.
To remedy this, you will have to use a dispatcher as descibed in the MSDN article:
How to: Make Thread-S...
How to install Hibernate Tools in Eclipse?
...igo installation instructions: jboss.org/tools/download/installation/update_3_3 . To sum that article you need to add download.jboss.org/jbosstools/updates/development/indigo as your update site and then from the list of available software just choose "Hibernate Tools" (for convenience, it appears m...
What's the difference between parenthesis $() and curly bracket ${} syntax in Makefile?
... to be fairly different:
, = ,
list = a,b,c
$(info $(subst $(,),-,$(list))_EOL)
$(info $(subst ${,},-,$(list))_EOL)
outputs
a-b-c_EOL
md/init-profile.md:4: *** unterminated variable reference. Stop.
But so far I only found this difference when the variable name into ${...} contains itself a co...
putting datepicker() on dynamically created elements - JQuery/JQueryUI
...
here is the trick:
$('body').on('focus',".datepicker_recurring_start", function(){
$(this).datepicker();
});
DEMO
The $('...selector..').on('..event..', '...another-selector...', ...callback...); syntax means:
Add a listener to ...selector.. (the body in our example)...
'UserControl' constructor with parameters in C#
...ommend
public partial class MyUserControl : UserControl
{
private int _parm1;
private string _parm2;
private MyUserControl()
{
InitializeComponent();
}
public MyUserControl(int parm1, string parm2) : this()
{
_parm1 = parm1;
_parm2 = parm2;
...
Exception thrown in NSOrderedSet generated accessors
... I am getting this error when I try to implement this work-around.. [__NSArrayI isEqualToSet:]: unrecognized selector sent to instance... This usually is from a item that has been release, but can't find where, anyone run into this?
– DerekH
Jan 19 '12 at...