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What's the difference between “groups” and “captures” in .NET regular expressions?
... are only very rarely more efficient than greedy quantifiers, and require knowledge of the input set and careful perf testing.
– Abel
Feb 28 '17 at 1:01
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REST API Token-based Authentication
...blems are already solved for you. For example, with BaseAuth, user agents know the password is a password so they don't cache it.
Auth server load
If you dispense a token to the user instead of caching the authentication on your server, you are still doing the same thing: Caching authentication in...
Why do x86-64 instructions on 32-bit registers zero the upper part of the full 64-bit register?
...endency madness is one of the reasons that 16-bit instructions are avoided now. x86-64 inherited this from 8086 for 8-bit and 386 for 16-bit, and decided to have 8 and 16-bit registers work the same way in 64-bit mode as they do in 32-bit mode.
See also Why doesn't GCC use partial registers? for...
How to select only date from a DATETIME field in MySQL?
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This works perfect because now I can select data from certain days by just having date format '%d'.
– mjwrazor
Mar 21 '16 at 17:31
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How do I check if a number is a palindrome?
... that's what i came up w/ too. i guess no sense in me posting it now. +1
– Esteban Araya
Oct 13 '08 at 22:21
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What is the >>>= operator in C?
...0.
The value of 0xF is way bigger than zero, so it passes. The expression now becomes:
a[ 0 :>>>=a<:!!0X.1P1 ]
Next, :> is a digraph. It is a construct that expands to ]:
a[0 ]>>=a<:!!0X.1P1 ]
>>= is the signed right shift operator, we can space that out from a t...
What are transparent comparators?
...ect is implemented exclusively in terms of std::string that is bad because now a std::string would be created for each comparison. On the other hand, if the underlying comparison function object can take a std::string and a string literal, that may avoid construction of a temporary object.
The nest...
What's the difference between design patterns and architectural patterns?
...tailed explanation but I will try to sketch the differences to best of my knowledge.
Patterns are distilled commonality that you find in programs. It allows us to deconstruct a large complex structure and build using simple parts. It provides a general solution for a class of problems.
A large co...
libxml install error using pip
...python-dev
For Debian based systems, it should be enough to install the known build dependencies of python-lxml or python3-lxml, e.g.
sudo apt-get build-dep python3-lxml
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Is async HttpClient from .Net 4.5 a bad choice for intensive load applications?
...aelFreidgeim: Thanks, although I've learned to live with the HttpClient by now...
– mortb
Dec 3 '18 at 14:26
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