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Set focus on TextBox in WPF from view model
...h Focus is... debugging .Net source code. No kidding. It saved me a lot of time many times. To enable .net source code debugging refer to Shawn Bruke's blog.
Finally, general approach that I use to set focus from ViewModel is Attached Properties. I wrote very simple attached property, which can be s...
Numpy first occurrence of value greater than existing value
...ve another list.
In [2]: N = 10000
In [3]: aa = np.arange(-N,N)
In [4]: timeit np.argmax(aa>N/2)
100000 loops, best of 3: 52.3 us per loop
In [5]: timeit np.where(aa>N/2)[0][0]
10000 loops, best of 3: 141 us per loop
In [6]: timeit np.nonzero(aa>N/2)[0][0]
10000 loops, best of 3: 142 u...
Conceptually, how does replay work in a game?
...bers). Since many games will update the game state based on the amount of time that passes between frames, you may also need to store the length of each frame.
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Convert a Map to a POJO
...Value is the right answer, but don't create an ObjectMapper instance every time. It's expensive to create and thread-safe, so create one and cache it somewhere.
– glade
Feb 26 '17 at 23:06
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Why would an Enum implement an Interface?
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First time ever seeing that Enum syntax (with the curly braces after the members), and I've been programming with Java for 6 years. TIL.
– jrahhali
Aug 29 '19 at 23:44
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Parse date without timezone javascript
I want to parse date without timezone in JavaScript. I have tried:
12 Answers
12
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The tilde operator in Python
...ssert ~np.True_ == np.False_
Reversing logical value can be useful sometimes, e.g., below ~ operator is used to cleanse your dataset and return you a column without NaN.
from numpy import NaN
import pandas as pd
matrix = pd.DataFrame([1,2,3,4,NaN], columns=['Number'], dtype='float64')
# Remove...
What is a columnar database?
... (blocks ) needs to be brought to main memory, which includes lots of seek time from disk to bring all block from disk to ram, even if you are interested only in column which helps you to provide sales report. Whereas in column oriented scheme columns are stored contiguously in the blocks, which mak...
Get cookie by name
.... pop), and repeat the same process, but now with ";" as a token, but this time pulling out the left string (i.e. shift) to get the actual token value.
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Javascript - get array of dates between 2 dates
...e 30 days before where should i change the above code to get only date not time.
– vaibhav kulkarni
Jul 22 '15 at 7:27
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