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Why do std::shared_ptr work
...th the appropriate type or if you use make_shared. But, still it is a good idea as the type of the pointer can change from construction until it is stored in the shared_ptr: base *p = new derived; shared_ptr<base> sp(p);, as far as shared_ptr is concerned the object is base not derived, so you...
Simplest two-way encryption using PHP
...ssl_encrypt() & openssl_decrypt()
As Scott says, Mcrypt is not a good idea as it has not been updated since 2007.
There is even an RFC to remove Mcrypt from PHP - https://wiki.php.net/rfc/mcrypt-viking-funeral
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What is Normalisation (or Normalization)?
...owever, you can't do this well without properly normalizing it first.
The idea being that the redundant information is reduced to a single entry. This is particularly useful in fields like addresses, where Mr. Chris submits his address as Unit-7 123 Main St. and Mrs. Chris lists Suite-7 123 Main S...
Difference between a theta join, equijoin and natural join
...tual value of the 3 concepts is.
The key concept in your question is the idea of a join. To understand a join you need to understand a Cartesian Product (the example is based on SQL where the equivalent is called a cross join as onedaywhen points out);
This isn't very useful in practice. Consider...
REST API Authentication
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I believe Kingz was trying to impart the idea that the mechanism for maintaining the session is intentionally vague. A session cookie is just one implementation of that mechanism.
– justin.hughey
Nov 3 '14 at 15:01
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How do you get the footer to stay at the bottom of a Web page?
... this markup.. but nevermind, I asked for the case gcedo has some specific idea about it, no need to guess
– YakovL
Nov 29 '19 at 15:24
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How do I print the elements of a C++ vector in GDB?
...nd then unistalled cgdb, and I already had libstdc++5 installed, I have no idea why the pretty printing did not work while now it works.
– Enrico
Jan 5 at 13:38
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Can I use __init__.py to define global variables?
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You can define global variables from anywhere, but it is a really bad idea. import the __builtin__ module and modify or add attributes to this modules, and suddenly you have new builtin constants or functions. In fact, when my application installs gettext, I get the _() function in all my modul...
Accessing private member variables from prototype-defined functions
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I suggest it would probably be a good idea to describe "having a prototype assignment in a constructor" as a Javascript anti-pattern. Think about it. It is way too risky.
What you're actually doing there on creation of the second object (i.e. b) is redefining th...
Why is GHC so large/big?
... Now that I think GHC uses dynamic linking, perhaps Dr. @Simon Marlow's ideas for compression of the four flavors is more practical? Cites: 1.#3658 (Dynamically link GHCi (and use system linker) on platforms that support it) – GHC ghc.haskell.org/trac/ghc/ticket/3658; 2.#8266 (Dynamic linking o...