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Difference between exit() and sys.exit() in Python
...raising SystemExit. sys.exit does so in sysmodule.c:
static PyObject *
sys_exit(PyObject *self, PyObject *args)
{
PyObject *exit_code = 0;
if (!PyArg_UnpackTuple(args, "exit", 0, 1, &exit_code))
return NULL;
/* Raise SystemExit so callers may catch it or clean up. */
PyE...
Convert SVG to image (JPEG, PNG, etc.) in the browser
...
svgopen.org/2010/papers/62-From_SVG_to_Canvas_and_Back - Works perfectly! [On the link page, sourceSVG = $("#your_svg_elem_name").get(0) ]
– Vijay Singh
Apr 24 '16 at 17:40
...
How to clear the interpreter console?
...s file in your python search path:
# wiper.py
class Wipe(object):
def __repr__(self):
return '\n'*1000
wipe = Wipe()
Then you can do this from the interpreter all you like :)
>>> from wiper import wipe
>>> wipe
>>> wipe
>>> wipe
...
After Installing Java JDK 7 For Mac OS X - mvn -version still shows java version 1.6.0_31
...ly found the answer here:
http://www.adam-bien.com/roller/abien/entry/java_se_development_kit_7
You should use JAVA_HOME=$(/usr/libexec/java_home) instead on a Mac and then set the current jdk via "Java Preferences.app".
Set JAVA_HOME in ~/.profile
...
Add custom messages in assert?
...
or with a macro: #ifndef m_assert #define m_assert(expr, msg) assert((msg, expr)) #endif
– Szymon Marczak
Aug 3 '17 at 10:50
...
Method Resolution Order (MRO) in new-style classes?
...gt; D.x
'c'
>>>
here, new-style, the order is:
>>> D.__mro__
(<class '__main__.D'>, <class '__main__.B'>, <class '__main__.C'>,
<class '__main__.A'>, <type 'object'>)
with A forced to come in resolution order only once and after all of its s...
How to make inline functions in C#
...omitted a lot of class setup stuff)
This is the Main function:
IL_001f: stloc.0
IL_0020: ldstr "P1 = {0}"
IL_0025: ldloc.0
IL_0026: ldc.i4.5
IL_0027: callvirt instance !1 class [mscorlib]System.Func`2<int32, int32>::Invoke(!0)
IL_002c: box [msc...
Using variables inside a bash heredoc
...text in a variable.
Name='Rich Ba$tard'
dough='$$$dollars$$$'
cat <<____HERE
$Name, you can win a lot of $dough this week!
Notice that \`backticks' need escaping if you want
literal text, not `pwd`, just like in variables like
\$HOME (current value: $HOME)
____HERE
Demo: https://ideone.com/...
How to assign colors to categorical variables in ggplot2 that have stable mapping?
...er.pal(5,"Set1")
names(myColors) <- levels(dat$grp)
colScale <- scale_colour_manual(name = "grp",values = myColors)
and then add the color scale onto the plot as needed:
#One plot with all the data
p <- ggplot(dat,aes(x,y,colour = grp)) + geom_point()
p1 <- p + colScale
#A second plo...
Replace all non Alpha Numeric characters, New Lines, and multiple White Space with one Space
... \W leaves the underscore. A short equivalent for [^a-zA-Z0-9] would be [\W_]
text.replace(/[\W_]+/g," ");
\W is the negation of shorthand \w for [A-Za-z0-9_] word characters (including the underscore)
Example at regex101.com
...