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How can I convert an RGB image into grayscale in Python?
...25 R + 0.7154 G + 0.0721 B
Alternatively, you can read image in grayscale by:
from skimage import io
img = io.imread('image.png', as_gray=True)
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Using margin:auto to vertically-align a div
... # is a hack to have the rule prefixed with it only interpreted by IE7 and under. You may prefer to instead include these rules in an IE-specific stylesheet by using conditional comments etc.
– o.v.
Sep 15 '12 at 2:10
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Why not abstract fields?
...
You can do what you described by having a final field in your abstract class that is initialised in its constructor (untested code):
abstract class Base {
final String errMsg;
Base(String msg) {
errMsg = msg;
}
abstract String ...
How to read the content of a file to a string in C?
...loc (length + 1); and add after fclose : buffer[length] = '\0'; (validated by Valgrind)
– soywod
Oct 28 '16 at 8:37
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Visual Studio - Resx File default 'internal' to 'public'
...sXFileCodeGenerator, use the PublicResXFileCodeGenerator.
You can do this by setting this as the Custom Tool property in the Property Window for the Resx file you want public access to.
Edit: Alternatetively you can set the Access Modifier to public when you open the resx file in Visual Studio. Th...
How to properly import a selfsigned certificate into Java keystore that is available to all Java app
...ocated at /usr/lib/jvm/java-openjdk/jre/lib/security/cacerts which I found by running ps -ef | grep java which told me my java was running from openjdk located at /usr/lib/jvm/java-openjdk/bin/java. Also, if this if for a webapp remember to restart. Thanks for the help!!
– Co...
Which access modifiers are implied when not specified?
...In lower-level languages like C or C++, you can get at private fields just by moving pointers around. Short of the safeguards at the OS-level, like DEP and encrypted memory, access modifiers are just compiler-provided assistance to help you write better code. ...Right?
– pbar...
git ignore exception
...An optional prefix ! which negates the pattern; any matching file excluded by a previous pattern will become included again. If a negated pattern matches, this will override lower precedence patterns sources.
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How to generate gcc debug symbol outside the build target?
...--strip-debug main
or
strip --strip-debug --strip-unneeded main
debug by debuglink mode:
objcopy --add-gnu-debuglink main.debug main
gdb main
You can also use exec file and symbol file separatly:
gdb -s main.debug -e main
or
gdb
(gdb) exec-file main
(gdb) symbol-file main.debug
For det...
How is std::function implemented?
...the sources I have found, a lambda expression is essentially implemented by the compiler creating a class with overloaded function call operator and the referenced variables as members. This suggests that the size of lambda expressions varies, and given enough references variables that size can be...