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How to swap two variables in JavaScript
...swap the values of two variables.
Given variables a and b:
b = [a, a = b][0];
Demonstration below:
var a=1,
b=2,
output=document.getElementById('output');
output.innerHTML="<p>Original: "+a+", "+b+"</p>";
b = [a, a = b][0];
output.innerHTML+="<p>Swapped: ...
In Typescript, How to check if a string is Numeric
... edited Feb 13 '18 at 14:19
k0pernikus
35.4k4040 gold badges154154 silver badges266266 bronze badges
answered May 3 '14 at 6:09
...
How do you make a HTTP request with C++?
...s of a page (an API) and check the contents to see if it contains a 1 or a 0. Is it also possible to download the contents into a string?
...
How to automatically generate N “distinct” colors?
...tness or saturation, you can distribute the hues like so:
// assumes hue [0, 360), saturation [0, 100), lightness [0, 100)
for(i = 0; i < 360; i += 360 / num_colors) {
HSLColor c;
c.hue = i;
c.saturation = 90 + randf() * 10;
c.lightness = 50 + randf() * 10;
addColor(c);
}
...
Change column type from string to float in Pandas
...
+200
You have four main options for converting types in pandas:
to_numeric() - provides functionality to safely convert non-numeric types...
Cron job every three days
Is it possible to run a cronjob every three days? Or maybe 10 times/month.
11 Answers
...
HTML5 canvas ctx.fillText won't do line breaks?
... Neuron
3,54333 gold badges2323 silver badges4040 bronze badges
answered Feb 18 '11 at 14:42
Simon SarrisSimon Sarris
56k121...
Find the max of two or more columns with pandas
...df = pd.DataFrame({"A": [1,2,3], "B": [-2, 8, 1]})
>>> df
A B
0 1 -2
1 2 8
2 3 1
>>> df[["A", "B"]]
A B
0 1 -2
1 2 8
2 3 1
>>> df[["A", "B"]].max(axis=1)
0 1
1 8
2 3
and so:
>>> df["C"] = df[["A", "B"]].max(axis=1)
>>> df
...
HTML5: Slider with two inputs possible?
...
Jarno
2,60122 gold badges2323 silver badges3939 bronze badges
answered Jan 21 '11 at 0:28
Martin BuberlMartin ...
How to avoid the “divide by zero” error in SQL?
... by zero" error we have programmed it like this:
Select Case when divisor=0 then null
Else dividend / divisor
End ,,,
But here is a much nicer way of doing it:
Select dividend / NULLIF(divisor, 0) ...
Now the only problem is to remember the NullIf bit, if I use the "/" key.
...