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How are GCC and g++ bootstrapped?
...ep 2 for verification purposes.
This process is called bootstrapping. It tests the compiler's capability of compiling itself and makes sure that the resulting compiler is built with all the optimizations that it itself implements.
EDIT: Drew Dormann, in the comments, points to Bjarne Stroustrup's...
One-liner to recursively list directories in Ruby?
What is the fastest, most optimized, one-liner way to get an array of the directories (excluding files) in Ruby?
9 Answer...
How to override the [] operator in Python?
...d in ver 3.x. Instead, use __getitem__. __setitem__` and __delitem__' and test if the argument is of type slice, i.e.: if isinstance(arg, slice): ...
– Don O'Donnell
Dec 25 '09 at 18:15
...
What's the proper way to install pip, virtualenv, and distribute for Python?
...ackages/source/v/virtualenv/virtualenv-12.0.7.tar.gz
(or whatever is the latest version!)
Unpack the source tarball
Use the unpacked tarball to create a clean virtual environment. This virtual environment will be used to "bootstrap" others. All of your virtual environments will automatically contai...
Make elasticsearch only return certain fields?
...ng
Allows to control how the _source field is returned with every hit.
Tested with Elastiscsearch version 5.5
The keyword "includes" defines the specifics fields.
GET /my_indice/my_indice_type/_search
{
"_source": {
"includes": [ "my_especific_field"]
},
"query": ...
When to use static vs instantiated classes
...
One thing about static methods/classes is that they don't facilitate unit testing (at least in PHP, but probably in other languages too).
Another thing about static data is that only one instance of it exists in your program : if you set MyClass::$myData to some value somewhere, it'll have this va...
Does Go have “if x in” construct similar to Python?
...eds at
most 20 comparisons, even in the worst case.
files := []string{"Test.conf", "util.go", "Makefile", "misc.go", "main.go"}
target := "Makefile"
sort.Strings(files)
i := sort.Search(len(files),
func(i int) bool { return files[i] >= target })
if i < len(files) && files[i] ==...
Importing files from different folder
...rom certain system changes (creating or modifying a file, etc) like during testing.
– Scott Prive
Mar 3 '16 at 18:59
37
...
Peak-finding algorithm for Python/SciPy
...e and above all prominence to get a good peak extraction.
According to my tests and the documentation, the concept of prominence is "the useful concept" to keep the good peaks, and discard the noisy peaks.
What is (topographic) prominence? It is "the minimum height necessary to descend to get from...
What REALLY happens when you don't free after malloc?
...stem once the process exits.
Source: Allocation and GC Myths (PostScript alert!)
Allocation Myth 4: Non-garbage-collected programs
should always deallocate all memory
they allocate.
The Truth: Omitted
deallocations in frequently executed
code cause growing leaks. They are
rarel...