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++someVariable vs. someVariable++ in JavaScript
... the value of the expression is the original value"
Now when used as a stm>and m>alone statement, them>y m> mean the same thing:
x++;
++x;
The difference comes when m>y m>ou use the value of the expression elsewhere. For example:
x = 0;
m>y m> = arram>y m>[x++]; // This will get arram>y m>[0]
x = 0;
m>y m> = arram>y m>[++x]; // Thi...
How do I validate a date string format in pm>y m>thon?
...xcept? Pm>y m>thon tends to slow down significantlm>y m> when an exception is raised m>and m> caught.
– chiffa
Sep 6 '16 at 1:26
1
...
Swift variable decorations with “?” (question mark) m>and m> “!” (exclamation mark)
I understm>and m> that in Swift all variables must be set with a value, m>and m> that bm>y m> using optionals we can set a variable to be set to nil initiallm>y m>.
...
Pm>y m>thon Matplotlib m>Y m>-Axis ticks on Right Side of Plot
I have a simple line plot m>and m> need to move the m>y m>-axis ticks from the (default) left side of the plot to the right side. Anm>y m> thoughts on how to do this?
...
Need to reset git branch to origin version
...n (github). Is there an easm>y m> wam>y m> to do this? I tried deleting the branch m>and m> then resetting up the tracking branch, but it just gives me the version I was working on again.
...
SVG: text inside rect
...
Is there a wam>y m> to not have to manuallm>y m> set height m>and m> width on the rect?
– George Mauer
Dec 20 '12 at 17:01
...
m>Y m>AML current date in rmarkdown
...e in the m>Y m>AML front-matter of a .rmd document to be processed bm>y m> knitr m>and m> the rmarkdown package. I used to have the following line at the top of mm>y m> wiki pages,
...
getting date format m-d-m>Y m> H:i:s.u from milliseconds
...rram>y m>[1]);
echo "Date: $date:" . $date_arram>y m>[0]."<br>";
Recommended m>and m> use dateTime() class from referenced:
$t = microtime(true);
$micro = sprintf("%06d",($t - floor($t)) * 1000000);
$d = new DateTime( date('m>Y m>-m-d H:i:s.'.$micro, $t) );
print $d->format("m>Y m>-m-d H:i:s.u"); // note at po...
How do I create a MongoDB dump of mm>y m> database?
What commm>and m> do I use m>and m> run?
19 Answers
19
...
Rename specific column(s) in pm>and m>as
...' else x for x in df.columns]
Or, construct a mapping using a dictionarm>y m> m>and m> perform the list-comprehension with it's get operation bm>y m> setting default value as the old name:
col_dict = {'gdp': 'log(gdp)', 'cap': 'cap_mod'} ## kem>y m>→old name, value→new name
df.columns = [col_dict.get(x, x) fo...