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Expand a random range from 1–5 to 1–7
...the random real number to base 7. Here is a Python implementation, with a test harness:
import random
rand5_calls = 0
def rand5():
global rand5_calls
rand5_calls += 1
return random.randint(0, 4)
def rand7_gen():
state = 0
pow5 = 1
pow7 = 7
while True:
if state...
What is the maximum length of a URL in different browsers?
...ximum URL length is 2083 chars, and it seems IE9 has a similar limit.
I've tested IE10 and the address bar will only accept 2083 chars. You can click a URL which is longer than this, but the address bar will still only show 2083 characters of this link.
There's a nice writeup on the IE Internals blo...
Asking the user for input until they give a valid response
...str.isupper to get only uppercase. See docs for the full list.
Membership testing:
There are several different ways to perform it. One of them is by using __contains__ method:
from itertools import chain, repeat
fruits = {'apple', 'orange', 'peach'}
prompts = chain(["Enter a fruit: "], repeat("I d...
Sound effects in JavaScript / HTML5
...ou should use
(new Audio()).canPlayType("audio/ogg; codecs=vorbis")
to test whether the browser supports Ogg Vorbis.
If you're writing a game or a music app (more than just a player), you'll want to use more advanced Web Audio API, which is now supported by most browsers.
...
Rank function in MySQL
...ows the variable initialization without requiring a separate SET command.
Test case:
CREATE TABLE person (id int, first_name varchar(20), age int, gender char(1));
INSERT INTO person VALUES (1, 'Bob', 25, 'M');
INSERT INTO person VALUES (2, 'Jane', 20, 'F');
INSERT INTO person VALUES (3, 'Jack', ...
Using “like” wildcard in prepared statement
...
@BalusC this applies to MSSQL, Postgres, and MySQL in my testing. The String being made into a parameter is itself interpreted as a mix of data and control instructions. SQL concatenation occurs before it is interpreted and preserves the vulnerability. The IEEE Center for Secure De...
Creating Multifield Indexes in Mongoose / MongoDB
...8738"
"account": {
"id": "123",
"customerId": 7879,
"name": "test"
..
..
}
}
I have tested with sample data it is perfectly working as expected.
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...
Does JavaScript guarantee object property order?
...
I roughly tested the conclusion in node v8.11 and it is correct.
– merlin.ye
Jul 20 '18 at 5:31
1
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Secure hash and salt for PHP passwords
...ntials, or modify other user's accounts or access their data. If you don't test the security of your system, then you cannot blame anyone but yourself.
Lastly: I am not a cryptographer. Whatever I've said is my opinion, but I happen to think it's based on good ol' common sense ... and lots of readi...
Splitting a string into chunks of a certain size
... only include the latter code. The former requires that you understand and test for the string being a multiple of chunk size prior to using, or understand that it will not return the remainder of the string.
– CodeMonkeyKing
Jan 2 '13 at 22:37
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