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Peak-finding algorithm for Python/SciPy
...from scipy.signal import find_peaks
x = np.sin(2*np.pi*(2**np.linspace(2,10,1000))*np.arange(1000)/48000) + np.random.normal(0, 1, 1000) * 0.15
peaks, _ = find_peaks(x, distance=20)
peaks2, _ = find_peaks(x, prominence=1) # BEST!
peaks3, _ = find_peaks(x, width=20)
peaks4, _ = find_peaks(x, th...
is there a post render callback for Angular JS directive?
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Sequence contains no elements?
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answered Aug 24 '09 at 19:23
Ryan LundyRyan Lundy
181k3232 gold badges170170 silver badges203203 bronze badges
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Initialize class fields in constructor or at declaration?
...s:
Don't initialize with the default values in declaration (null, false, 0, 0.0…).
Prefer initialization in declaration if you don't have a constructor parameter that changes the value of the field.
If the value of the field changes because of a constructor parameter put the initialization in th...
Should I put the Google Analytics JS in the or at the end of ?
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answered Jul 4 '10 at 3:07
Chris ArguinChris Arguin
11.1k44 gold badges2828 silver badges4646 bronze badges
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Should I use pt or px?
... varies by hardware and resolution. (That article is fresh, last updated 2014-10.)
My own way of thinking about it: 1 px is the size of a thin line intended by a designer to be barely visible.
To quote that article:
The px unit is the magic unit of CSS. It is not related to the current font and al...
WebSockets protocol vs HTTP
...e is an example of a request/response to using Chrome:
Example request (2800 bytes including cookie data, 490 bytes without cookie data):
GET / HTTP/1.1
Host: www.cnn.com
Connection: keep-alive
Cache-Control: no-cache
Pragma: no-cache
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*...
Do htmlspecialchars and mysql_real_escape_string keep my PHP code safe from injection?
...pth study to the multibyte problems, see https://stackoverflow.com/a/12118602/1820
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Do spurious wakeups in Java actually happen?
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204
The Wikipedia article on spurious wakeups has this tidbit:
The pthread_cond_wait() function...
How to set warning level in CMake?
...MSVC)
# Force to always compile with W4
if(CMAKE_CXX_FLAGS MATCHES "/W[0-4]")
string(REGEX REPLACE "/W[0-4]" "/W4" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
else()
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /W4")
endif()
elseif(CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_GNUCXX)
# Update...