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How to convert a std::string to const char* or char*?
...::string foo{"text"};
auto p = &*foo.begin();
Pro
Simple and short
Fast (only method with no copy involved)
Cons
Final '\0' is not to be altered / not necessarily part of the non-const memory.
2. Use std::vector<CharT>
std::string foo{"text"};
std::vector<char> fcv(foo.dat...
Rebasing a branch including all its children
... if ( git merge-ff -q "$child" "$parent" 2> /dev/null && echo "Fast-forwarded $child to $parent." ) || \
git rebase --onto "$parent" "$REF_NAMESPACE/$parent" "$child"; then
echo "Successfully rebased $child onto $parent"
else
ec...
How to select rows from a DataFrame based on column values?
...10000 loops each)
Evaluating the mask with the numpy array is ~ 30 times faster. This is partly due to numpy evaluation often being faster. It is also partly due to the lack of overhead necessary to build an index and a corresponding pd.Series object.
Next, we'll look at the timing for slicing ...
cpuid汇编指令 - C/C++ - 清泛网 - 专注C/C++及内核技术
... 09 APIC On-chip APIC Hardware
10 Reserved
11 SEP Fast System Call
12 MTRR Memory Type Range Registers
13 PGE Page Global Enable
14 MCA Machine-Check Architecture
15 CMOV Conditional Move Instruction
16 PAT Page Attribute Table
...
Differences between Java 8 Date Time API (java.time) and Joda-Time
...ate/Time :
Java 8 classes are built around the human time. It makes them fast for human datetime arithmetics/conversion.
Date/time component getters like getDayOfMonth have O(1) complexity in Java 8 implementation.
Parsing of OffsetDateTime/OffsetTime/ZonedDateTime is very slow in Java 8 ea b121 d...
How can you do anything useful without mutable state?
...While an immutable language might optimize for you, nothing is going to be faster than modifying memory which CPUs are fast at doing. And so if it turns out there are 10 or 20 places where you need imperative I think you should just avoid immutable altogether unless you can modularize it for very s...
Webfonts or Locally loaded fonts?
...I'm not personally a huge fan of CDNs, but the fact is that they're REALLY fast. Google's servers will beat most shared hosting plans by a landslide, and because their fonts are so popular, people might even have them cached already.
And that's all I've got.
I have no experience with Typekit, so I...
What happens when a computer program runs?
...s that are actually executed). They are essentially just very small, very fast on-chip memory locations that are used for a number of different purposes.
Register layout is highly dependent on the architecture (in fact, registers, the instruction set, and memory layout/design, are exactly what is ...
How useful/important is REST HATEOAS ( maturity level 3)?
... from REST or anything else, breeds complexity. If you want it simple, and fast, then you don't make it flexible, you "just do it", and be done. As you add abstractions and dereferencing to systems, then stuff gets more difficult, more boiler plate, more code to test.
Much of REST fails the "you're...
Checkout another branch when there are uncommitted changes on the current branch
...u switch branches.
Much of Git, including commit-switching, is relatively fast because of this index. What's actually in the index is not each file itself, but rather each file's hash. The copy of the file itself is stored as what Git calls a blob object, in the repository. This is similar to ho...