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What are the relative strengths and weaknesses of Git, Mercurial, and Bazaar? [closed]
...to the user's choice of workflows -- but I've since come to be quite comfortable with it].
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UTF-8 all the way through
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Data Storage:
Specify the utf8mb4 character set on all tables and text columns in your database. This makes MySQL physically store and retrieve values encoded natively in UTF-8. Note that MySQL will implicitly use utf8mb4 encoding if a utf8mb4_* collation is specified (without ...
Fundamental difference between Hashing and Encryption algorithms
... store sha512(password), you're not doing a thing to guard against rainbow tables or brute force attacks. Remember, the hash function was designed for speed. So it's trivial for an attacker to just run a dictionary through the hash function and test each result.
Adding a salt helps matters since i...
What is SOA “in plain english”? [closed]
...ular, in a service-oriented architecture the parts generally don't share mutable state (global variables in a traditional program). Or if they do share state, that state is carefully locked up in a database which is itself an agent and which can easily manage multiple concurrent clients.
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What does Docker add to lxc-tools (the userspace LXC tools)?
...ocker offers a high-level tool with several powerful functionalities:
Portable deployment across machines. Docker defines a format for bundling an application and all its dependencies into a single object which can be transferred to any docker-enabled machine, and executed there with the guarantee...
Where does Scala look for implicits?
...s that define which implicits are visible and which are not. The following table showing where the compiler will search for implicits was taken from an excellent presentation about implicits by Josh Suereth, which I heartily recommend to anyone wanting to improve their Scala knowledge. It has been c...
When to use static vs instantiated classes
...y the code is much more extensible and, the most important part for me, testable. Why is it more important to be testable? Because I don't always write library code, so extensibility is not that important, but testability is important when I do refactoring. Anyways, testable code usually yields exte...
What is the difference between an interface and abstract class?
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Last comparison is confusing as per table! Methods in interface can't be static but variables are static final Implemented methods in abstract class can be static
– realPK
Mar 9 '14 at 4:29
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SQLite Concurrent Access
...ions to minimize contention. Especially SQLite 3.
For most desktop/laptop/tablet/phone applications, SQLite is fast enough as there's not enough concurrency. (Firefox uses SQLite extensively for bookmarks, history, etc.)
For server applications, somebody some time ago said that anything less than ...
cpuid汇编指令 - C/C++ - 清泛网 - 专注C/C++及内核技术
... 15 CMOV Conditional Move Instruction
16 PAT Page Attribute Table
17 PSE-36 36-bit Page Size Extension
18 PSN Processor serial number is present and enabled
19 CLFSH CLFLUSH Instruction
20 Reserved
21 DS Debug Store
22 ACPI Thermal...