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Must Dependency Injection come at the expense of Encapsulation?
...om component-oriented software engineering, not OO.
Component software is all about managing dependencies - an example in common use is .NET's Assembly mechanism. Each assembly publishes the list of assemblies that it references, and this makes it much easier to pull together (and validate) the pie...
How to display pandas DataFrame of floats using a format string for columns?
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As of Pandas 0.17 there is now a styling system which essentially provides formatted views of a DataFrame using Python format strings:
import pandas as pd
import numpy as np
constants = pd.DataFrame([('pi',np.pi),('e',np.e)],
columns=['name','value'])
C = constants...
How to convert a currency string to a double with jQuery or Javascript?
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Remove all non dot / digits:
var currency = "-$4,400.50";
var number = Number(currency.replace(/[^0-9.-]+/g,""));
share
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improv...
C++ Erase vector element by value rather than by position? [duplicate]
... @jak: Take a look at the description of remove(): It moves all values not equal to the value passed to the beginning of the range [begin,end). With your example in the question you'd get 5,9,2,0,7,7. As remove() however returns an iterator to the new end, vec.erase() can remove the o...
How to create a zip file in Java
...a zip in the root of D: named test.zip which will contain one single file called mytext.txt. Of course you can add more zip entries and also specify a subdirectory like this:
ZipEntry e = new ZipEntry("folderName/mytext.txt");
You can find more information about compression with Java here.
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returning in the middle of a using block
...you issues is if you return in the middle of a using statement and additionally return the in using variable. But then again, this would also cause you issues even if you didn't return and simply kept a reference to a variable.
using ( var x = new Something() ) {
// not a good idea
return x...
What is reflection and why is it useful?
... say you have an object of an unknown type in Java, and you would like to call a 'doSomething' method on it if one exists. Java's static typing system isn't really designed to support this unless the object conforms to a known interface, but using reflection, your code can look at the object and fin...
What to do on TransactionTooLargeException
...ce and an application,(This involves transferring lots of thumbnails). Actually data size was around 500kb, and the IPC transaction buffer size is set to 1024KB. I am not sure why it exceeded the transaction buffer.
This also can occur, when you pass lot of data through intent extras
When you get ...
Formatting “yesterday's” date in python
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all answers are correct, but I want to mention that time delta accepts negative arguments.
>>> from datetime import date, timedelta
>>> yesterday = date.today() + timedelta(days=-1)
>>> print(y...
How can bcrypt have built-in salts?
...$2a$10$vI8aWBnW3fID.ZQ4/zo1G.q1lRps.9cGLcZEiGDMVr5yUP1KUOYTa
This is actually three fields, delimited by "$":
2a identifies the bcrypt algorithm version that was used.
10 is the cost factor; 210 iterations of the key derivation function are used (which is not enough, by the way. I'd recommend a ...