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How to determine if a number is a prime with regex?
... I actually wrote a blog post explaining this with more detail: Demystifying The Regular Expression That Checks If A Number Is Prime.
– Illya Gerasymchuk
Sep 8 '16 at 12:16
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In HTML5, should the main navigation be inside or outside the element?
...
I do not like putting the nav in the header. My reasoning is:
Logic
The header contains introductory information about the document. The nav is a menu that links to other documents. To my mind this means that the content of the nav belongs to the site rather than the ...
Explain how finding cycle start node in cycle linked list work?
... @ankur: The meeting point is X_i, and we have shown (third paragraph in my answer) that i must be a multiple of the loop length. After mu additional steps past the meeting point, you are now at X_(i + mu). But we have shown that X_(i + mu) = X_(mu + i) = X_mu, because of this special property o...
Strange, unexpected behavior (disappearing/changing values) when using Hash default value, e.g. Hash
...ly used.
The mutable way
The documentation for Hash.new states (emphasis my own):
If a block is specified, it will be called with the hash object and the key, and should return the default value. It is the block’s responsibility to store the value in the hash if required.
So we must store ...
What column type/length should I use for storing a Bcrypt hashed password in a Database?
...spectively.
As you use the 2a format, you’ll need 60 bytes. And thus for MySQL I’ll recommend to use the CHAR(60) BINARYor BINARY(60) (see The _bin and binary Collations for information about the difference).
CHAR is not binary safe and equality does not depend solely on the byte value but on th...
Constant Amortized Time
...elements onto the dynamic array
takes: O(n/n)=O(1), constant time."
To my understanding as a simple story:
Assume you have a lot of money.
And, you want to stack them up in a room.
And, you have long hands and legs, as much long as you need now or in future.
And, you have to fill all in one roo...
Does using “new” on a struct allocate it on the heap or stack?
... localVariable = new Guid(someString);
is different to the IL used for:
myInstanceOrStaticVariable = new Guid(someString);
In addition, if the value is used as an intermediate value, e.g. an argument to a method call, things are slightly different again. To show all these differences, here's a ...
What is the formal difference in Scala between braces and parentheses, and when should they be used?
...
The is why people argue Scala is complex. An I'd call myself a Scala enthusiast.
– andyczerwonka
Nov 7 '12 at 20:46
1
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Cmake vs make sample codes?
...he sources
prog1.c, prog2.c, prog3.c and main.c. prog is linked against libmystatlib.a
and libmydynlib.so which are both also built from source. Additionally, prog uses
the library libstuff.a in stuff/lib and its header in stuff/include. The
Makefile by default builds a release target, but offers al...
How can you use an object's property in a double-quoted string?
...
caveman: It just was a thing that caught my eye as being a potential error cause. You can certainly do it and it's nothing weird, but when omitting the $() operator it screams "Fail" because it can't work. Thus my answer was just an educated guess about what your po...