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Best way to make Java's modulus behave like it should with negative numbers?
...ch, but uses one less modulo operation. Probably a win if the computer can predict a < 0 correctly.
(Edit: Fixed the formula.)
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Generate a random alphanumeric string in Cocoa
... limited (0-9, A-F, - = 17, vs 62 for a-Z. 0-9). This string is unique but predictable.
– amcc
Jul 2 '15 at 11:16
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How to properly add cross-site request forgery (CSRF) token using PHP
...rate your tokens this way: $token = md5(uniqid(rand(), TRUE));
rand() is predictable
uniqid() only adds up to 29 bits of entropy
md5() doesn't add entropy, it just mixes it deterministically
Try this out:
Generating a CSRF Token
PHP 7
session_start();
if (empty($_SESSION['token'])) {
$_SE...
Why is reading lines from stdin much slower in C++ than Python?
...e calls would have been saved, and those should be pretty cheap.
Still, I predict you would be able to measure the difference between cat file | wc -l and wc -l < file and find a noticeable (2-digit percentage) difference. Each of the slower tests will have paid a similar penalty in absolute tim...
How do I update a GitHub forked repository?
...d you should see all the latest changes.
Create pull request and assign a predictable name to your pull request (e.g., Update from original).
Scroll down to Merge pull request, but don't click anything yet.
Now you have three options, but each will lead to a less-than-clean commit history.
The ...
Why should text files end with a newline?
...les and binary files (see the ISO C standard), many utilities only produce predictable or meaningful output when operating on text files. The standard utilities that have such restrictions always specify "text files" in their STDIN or INPUT FILES sections.
Source: https://pubs.opengroup.org/online...
In Python, using argparse, allow only positive integers
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The quick and dirty way, if you have a predictable max as well as min for your arg, is use choices with a range
parser.add_argument('foo', type=int, choices=xrange(0, 1000))
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Any implementation of Ordered Set in Java?
...oc:
Hash table and linked list implementation of the Set interface, with predictable iteration order. This implementation differs from HashSet in that it maintains a doubly-linked list running through all of its entries. This linked list defines the iteration ordering, which is the order in which ...
Database, Table and Column Naming Conventions? [closed]
...y key should just be "ID". Such a simple convention makes the primary key predictable and quickly identifiable. I would, however, prepend the table name ("PersonID") when its used as a foreign key in other tables. This convention could help distinguish between a primary key and foreign keys in th...
Logic to test that 3 of 4 are True
...olutions were quite a bit quicker operation-for-operation as the CPU could predict the code path better, and execute more operations in tandem. There is about 50% less work in the branching statement here though.
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