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Difference between margin and padding?
What exactly is the difference between margin and padding in CSS? It really doesn't seem to serve much purpose. Could you give me an example of where the differences lie (and why it is important to know the difference)?
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Limit number of characters allowed in form input text field
...work fine. So say if you wanted the values to be between 1-50 you could or all positive numbers, etc.
– b3verelabs
Dec 17 '11 at 14:34
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Hashing a file in Python
...those bigger files in chunks!
import sys
import hashlib
# BUF_SIZE is totally arbitrary, change for your app!
BUF_SIZE = 65536 # lets read stuff in 64kb chunks!
md5 = hashlib.md5()
sha1 = hashlib.sha1()
with open(sys.argv[1], 'rb') as f:
while True:
data = f.read(BUF_SIZE)
i...
How does Google calculate my location on a desktop?
...the wifis you passed, and returns the "wardrived" position if found, eventually with triangulation if intensities are present. The more wifi networks around, the higher is the accuracy of the positioning.
adds additional networks you see that are currently not in the database to their database, so t...
Do browsers send “\r\n” or “\n” or does it depend on the browser?
...me for a million years... whenever I create a website with a textarea that allows multi-line (such as a "Bio" for a user's profile) I always end up writing the following paranoid code:
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Get the position of a div/span tag
...n will tell you the x,y position of the element relative to the page. Basically you have to loop up through all the element's parents and add their offsets together.
function getPos(el) {
// yay readability
for (var lx=0, ly=0;
el != null;
lx += el.offsetLeft, ly += el.off...
Keep only date part when using pandas.to_datetime
...fault represents the dates with datetime64[ns] even though the dates are all daily only.
I wonder whether there is an elegant/clever way to convert the dates to datetime.date or datetime64[D] so that, when I write the data to CSV, the dates are not appended with 00:00:00 . I know I can conver...
How many spaces will Java String.trim() remove?
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All of them.
Returns:
A copy of this string with leading and trailing white space removed, or this string if it has no leading or trailing white space.
~ Quoted from Java 1.5.0 docs
(But why didn't you ju...
How to sort an ArrayList?
...t the runtime characteristics of reverse, but sorting descending could actually be faster then sorting ascending and then reversing. Moreover, using a List implementation that supports Comparator as constructor argument (thus keeping it invariant) would ensure the list is sorted at all times.
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get list of pandas dataframe columns based on data type
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this doesn't work if all your dataframe columns are returning object type, regardless of their actual contents
– user5359531
Jul 17 '17 at 23:46
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