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Finding the number of days between two dates
...M,$EndD,$EndY) - gregoriantojd($StartM,$StartD,$StartY); (for an inclusive range). Unlike the Datetime Class, Gregorian to Julian is available in v4 up. Valid range is 4714 B.C. to 9999 A.D. Beware of the funky parameter order (like you need that warning for php).
– Guy Gord...
How to check if a string starts with one of several prefixes?
...rse there is; matching via regular expressions is much more expensive than raw string method calls. Exact figures I cannot give, but this is the general consensus.
– klaar
Mar 21 '16 at 15:47
...
Get the Query Executed in Laravel 3/4
How can I retrieve the raw executed SQL query in Laravel 3/4 using Laravel Query Builder or Eloquent ORM?
20 Answers
...
Selecting with complex criteria from pandas.DataFrame
...mport randint
>>> df = pd.DataFrame({'A': [randint(1, 9) for x in range(10)],
'B': [randint(1, 9)*10 for x in range(10)],
'C': [randint(1, 9)*100 for x in range(10)]})
>>> df
A B C
0 9 40 300
1 9 70 700
2 5 70 900
3 8 80 900...
How do I escape ampersands in XML so they are rendered as entities in HTML?
... It might be a guess; it is correct though. CDATA markers allow raw ampersands to be used.
– Quentin
Aug 25 '09 at 14:40
19
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Creating functions in a loop
...rguments are evaluated immediately when the function is defined:
for i in range(3):
def f(i=i): # <- right here is the important bit
return i
functions.append(f)
To give a little bit of insight into how/why this works: A function's default arguments are stored as an attribute...
How can I use Guzzle to send a POST request in JSON?
...
For Guzzle <= 4:
It's a raw post request so putting the JSON in the body solved the problem
$request = $this->client->post(
$url,
[
'content-type' => 'application/json'
],
);
$request->setBody($data); #set body!
$resp...
Math.random() versus Random.nextInt(int)
...ly distributed bits in its mantissa, so it is uniformly distributed in the range 0 to 1-(2^-53).
Random.nextInt(n) uses Random.next() less than twice on average- it uses it once, and if the value obtained is above the highest multiple of n below MAX_INT it tries again, otherwise is returns the ...
Changing image size in Markdown
...
You could just use some HTML in your Markdown:
<img src="drawing.jpg" alt="drawing" width="200"/>
Or via style attribute (not supported by GitHub)
<img src="drawing.jpg" alt="drawing" style="width:200px;"/>
Or you could use a custom CSS file as described in this answer...
What are the benefits of Java's types erasure?
..."type erasure". Since generic types are not erased but replaced with their raw counterparts, a better choice seems to be "type mutilation".
The quintessential feature of type erasure in its commonly understood sense is forcing the runtime to stay within the boundaries of the static type system by m...