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boolean in an if statement
...ue === true)
This will only satisfy the if condition if booleanValue is exactly equal to true. No other truthy value will satisfy it.
On the other hand if you do this:
if (someVar == true)
Then, what Javascript will do is type coerce true to match the type of someVar and then compare the two ...
What's the scope of a variable initialized in an if statement?
...a function, class, or module.
(Implicit functions defined by a generator expression or list/set/dict comprehension do count, as do lambda expressions. You can't stuff an assignment statement into any of those, but lambda parameters and for clause targets are implicit assignment.)
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How to delete multiple values from a vector?
...t 11:22
cbeleites unhappy with SXcbeleites unhappy with SX
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Setting different color for each series in scatter plot on matplotlib
...rt numpy as np
import matplotlib.pyplot as plt
import matplotlib.cm as cm
x = np.arange(10)
ys = [i+x+(i*x)**2 for i in range(10)]
colors = cm.rainbow(np.linspace(0, 1, len(ys)))
for y, c in zip(ys, colors):
plt.scatter(x, y, color=c)
Or you can make your own colour cycler using itertools.cy...
How to know user has clicked “X” or the “Close” button?
...decided to close the form
but I guess it is the same for both clicking the X button or clicking the close button.
So how can I differentiate between these two in my code?
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how to remove X-Powered-By in ExpressJS [duplicate]
I want to remove X-Powered-By for Security,Save Bandwidth in ExpressJS(node.js). how to do it?
it could be filter(app.use) ?
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Convert interface{} to int
...ped value are these rules in the referenced specs parts:
Conversions are expressions of the form T(x) where T is a type and x is an expression that can be converted to type T.
...
A non-constant value x can be converted to type T in any of these cases:
x is assignable to T.
x's type and T have i...
Curious null-coalescing operator custom implicit conversion behaviour
Note: this appears to have been fixed in Roslyn
5 Answers
5
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Check if the number is integer
...
Another alternative is to check the fractional part:
x%%1==0
or, if you want to check within a certain tolerance:
min(abs(c(x%%1, x%%1-1))) < tol
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Why doesn't calling a Python string method do anything unless you assign its output?
...
This is because strings are immutable in Python.
Which means that X.replace("hello","goodbye") returns a copy of X with replacements made. Because of that you need replace this line:
X.replace("hello", "goodbye")
with this line:
X = X.replace("hello", "goodbye")
More broadly, this is ...