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orderBy multiple fields in Angular
...e fields at same time in angular? fist by group and then by sub-group
for Example
8 Answers
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How to create id with AUTO_INCREMENT on Oracle?
...bir
BEFORE INSERT ON departments
FOR EACH ROW
BEGIN
SELECT dept_seq.NEXTVAL
INTO :new.id
FROM dual;
END;
/
UPDATE:
IDENTITY column is now available on Oracle 12c:
create table t1 (
c1 NUMBER GENERATED by default on null as IDENTITY,
c2 VARCHAR2(10)
);
or specify starti...
Creating a range of dates in Python
...arting with today, and going back an arbitrary number of days, say, in my example 100 days. Is there a better way to do it than this?
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jquery .html() vs .append()
...hods, this is what happens:
A temporary element is created, let's call it x. x's innerHTML is set to the string of HTML that you've passed. Then jQuery will transfer each of the produced nodes (that is, x's childNodes) over to a newly created document fragment, which it will then cache for next tim...
The tilde operator in Python
...wos-complement representation of the integer are reversed (as in b <- b XOR 1 for each individual bit), and the result interpreted again as a twos-complement integer. So for integers, ~x is equivalent to (-x) - 1.
The reified form of the ~ operator is provided as operator.invert. To support th...
Can I have onScrollListener for a ScrollView?
...ithout the coordinates. You can get them by using getScrollY() or getScrollX() from within the listener though.
scrollView.getViewTreeObserver().addOnScrollChangedListener(new OnScrollChangedListener() {
@Override
public void onScrollChanged() {
int scrollY = rootScrollView.getScrol...
Newline in string attribute
How can I add a line break to text when it is being set as an attribute i.e.:
13 Answers
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How do I implement interfaces in python?
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"Interfaces are not necessary in Python. Except when they are."
– Baptiste Candellier
Feb 9 '19 at 18:01
9
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How to set a single, main title above all the subplots with Pyplot?
...lt.figure()
data=np.arange(900).reshape((30,30))
for i in range(1,5):
ax=fig.add_subplot(2,2,i)
ax.imshow(data)
fig.suptitle('Main title') # or plt.suptitle('Main title')
plt.show()
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Unicode equivalents for \w and \b in Java regular expressions?
Many modern regex implementations interpret the \w character class shorthand as "any letter, digit, or connecting punctuation" (usually: underscore). That way, a regex like \w+ matches words like hello , élève , GOÄ_432 or gefräßig .
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