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Difference between Hashing a Password and Encrypting it
... This is safe right? As long as the passwords are never stored in unhashed form for long term and all occurences of encrypted/plaintext passwords are erased from any memory when no longer needed?
– AgentM
Apr 14 '19 at 9:23
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What is the difference between old style and new style classes in Python?
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Python 3 Note:
Python 3 doesn't support old style classes, so either form noted above results in a new-style class.
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Set value to null in WPF binding
...xchange.using('gps', function() { StackExchange.gps.track('embedded_signup_form.view', { location: 'question_page' }); });
$window.unbind('scroll', onScroll);
}
};
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Breaking up long strings on multiple lines in Ruby without stripping newlines
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See the answer by @Jessehz. The way to have nicely formatted code with proper indenting is to put each line in quotes.
– orrd
Jun 5 '17 at 20:41
add a ...
StringBuilder vs String concatenation in toString() in Java
...it is shorter and the compiler will in fact turn it into version 2 - no performance difference whatsoever.
More importantly given we have only 3
properties it might not make a
difference, but at what point do you
switch from concat to builder?
At the point where you're concatenating in a...
Understanding ibeacon distancing
...e that the term "accuracy" here is iOS speak for distance in meters. This formula isn't perfect, but it roughly approximates what iOS does.
protected static double calculateAccuracy(int txPower, double rssi) {
if (rssi == 0) {
return -1.0; // if we cannot determine accuracy, return -1.
}
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How should I ethically approach user password storage for later plaintext retrieval?
...t of any publicly-traded company, but storing passwords in any recoverable form would cause you to to fail several different types of security audits. The issue is not how difficult it would be for some "hacker" who got access to your database to recover the passwords. The vast majority of securit...
SQLAlchemy: cascade delete
...and the one I recommend, is built into your database and usually takes the form of a constraint on the foreign key declaration. In PostgreSQL it looks like this:
CONSTRAINT child_parent_id_fkey FOREIGN KEY (parent_id)
REFERENCES parent_table(id) MATCH SIMPLE
ON DELETE CASCADE
This means that when y...
Retain precision with double in Java
...t values are handled in Java, see the Section 4.2.3: Floating-Point Types, Formats, and Values of the Java Language Specification.
The byte, char, int, long types are fixed-point numbers, which are exact representions of numbers. Unlike fixed point numbers, floating point numbers will some times (s...
Scalar vs. primitive data type - are they the same thing?
...enumeration types, characters, and the various representations of integers form a more general type class called scalar types. Hence, the operations you can perform on values of any scalar type are the same as those for integers.
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