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How does password salt help against a rainbow table attack?
...the salt.
You always have to store the salt with the password, because in order to validate what the user entered against your password database, you have to combine the input with the salt, hash it and compare it to the stored hash.
Security of the hash
Now somebody with a rainbow table could rev...
What's an object file in C?
...s a linker to see what symbols are in it as well as symbols it requires in order to work. (For reference, "symbols" are basically names of global objects, functions, etc.)
A linker takes all these object files and combines them to form one executable (assuming that it can, ie: that there aren't an...
Add a column to existing table and uniquely number them on MS SQL Server
...be of type IDENTITY (auto-increment), or you want to be specific about the order in which your rows are numbered, you can add a column of type INT NULL and then populate it like this. In my example, the new column is called MyNewColumn and the existing primary key column for the table is called MyP...
Python class inherits object
...lets you customize how new class instances are created.
Method resolution order (MRO): in what order the base classes of a class will be searched when trying to resolve which method to call.
Related to MRO, super calls. Also see, super() considered super.
If you don't inherit from object, forget...
jQuery UI “ $(”#datepicker“).datepicker is not a function”
...datepicker();
Also make sure your javascript includes are in the correct order so the jquery core library is defined before the jquery.ui. I've had that cause issues.
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Remove a JSON attribute [duplicate]
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@ggb667 you don't need to. Ordering doesn't matter for a JSON object. Without getting too deep in my explanation, it's like a Dictionary (or Map). Order matters if you are dealing with an array that contains objects or other values, since they don't ha...
How to specify table's height such that a vertical scroll bar appears?
...nstead of applying it to the table tag, it should be done to the tbody, in order to allow the header to remain static when scrolling. Then there's some styling to sort out with regard to the area in the thead that is above the scroll bar.
– David
Oct 9 '12 at 1...
What is the attribute property=“og:title” inside meta tag?
...third-party website to Facebook when a page is shared (or liked, etc.). In order to make this possible, information is sent via Open Graph meta tags in the <head> part of the website’s code.
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Does Python support short-circuiting?
...cuiting. As shown in the docs; they evaluate each element of a sequence in-order, until finding a result that allows an early exit in the evaluation. Consider examples below to understand both.
The function any() checks if any element is True. It stops executing as soon as a True is encountered an...
How to add double quotes to a string that is inside a variable?
...ar string1 = @"""inside quotes""";
var string2 = "\"inside quotes\"";
In order to perhaps make it a bit more clear what happens:
var string1 = @"before ""inside"" after";
var string2 = "before \"inside\" after";
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