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Method Resolution Order (MRO) in new-style classes?
... suppose to be two crossing edges, not a node and ^ signifies methods that call super())
class G():
def m(self):
print("G")
class F(G):
def m(self):
print("F")
super().m()
class E(G):
def m(self):
print("E")
super().m()
class D(G):
def m(se...
What's the difference between __PRETTY_FUNCTION__, __FUNCTION__, __func__?
...] = "function-name";
appeared, where function-name is the name of the lexically-enclosing function. This name is the unadorned name of the function.
Note that it is not a macro and it has no special meaning during preprocessing.
__func__ was added to C++ in C++11, where it is specified as contain...
Get nodes where child node contains an attribute
...ize XPath Axes (https://www.w3schools.com/xml/xpath_axes.asp). More specifically, you are looking to use the descendants axes.
I believe this example would do the trick:
//book[descendant::title[@lang='it']]
This allows you to select all book elements that contain a child title element (regardle...
seek() function?
...
when calling seek from the beginning of the file, does it actually start 'seeking' from the beginning of the file each time?
– Theo Stefou
May 29 at 9:59
...
How to map a composite key with JPA and Hibernate?
...
To map a composite key, you can use the EmbeddedId or the IdClass annotations. I know this question is not strictly about JPA but the rules defined by the specification also applies. So here they are:
2.1.4 Primary Keys and Entity Identity
...
A composite pri...
How to update Python?
... conda in your bin or install conda from PyPI. Then create another symlink called conda-activate to activate in the Anaconda/Miniconda root bin folder. Now Anaconda/Miniconda is just like Ruby RVM. Just use conda-activate root to enable Anaconda/Miniconda.
Portable Python is no longer being develope...
difference between use and require
...ier by not requiring you to spell out the namespace every time you want to call a function though it can also make a mess of things by creating namespace conflicts. A good middle ground between "use" and "require" is to only 'use' the functions from a namespace that you actually use.
for instance: ...
How to get Resource Name from Resource id
...:
to get string like radio1:
getResources().getResourceEntryName(int resid);
to get string like com.sample.app:id/radio1:
getResources().getResourceName(int resid);
In Kotlin Now :
val name = v.context.resources.getResourceEntryName(v.id)
...
Performance of FOR vs FOREACH in PHP
...i = 0; $i < count($array); $i++) {
That's an expensive loop, since it calls count on every single iteration. So long as you're not doing that, I don't think it really matters...
As for the reference making a difference, PHP uses copy-on-write, so if you don't write to the array, there will be ...
How to create id with AUTO_INCREMENT on Oracle?
...
There is no such thing as "auto_increment" or "identity" columns in Oracle as of Oracle 11g. However, you can model it easily with a sequence and a trigger:
Table definition:
CREATE TABLE departments (
ID NUMBER(10) NOT NULL,
DESCRIPTION VARCHAR2(50) ...