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Determine which element the mouse pointer is on top of in JavaScript
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How to select rows from a DataFrame based on column values?
...te the parentheses. Due to Python's operator precedence rules, & binds more tightly than <= and >=. Thus, the parentheses in the last example are necessary. Without the parentheses
df['column_name'] >= A & df['column_name'] <= B
is parsed as
df['column_name'] >= (A &...
Vertically centering a div inside another div [duplicate]
...pact your rendering performance so I would suggest that you use one of the more modern solutions.
Here is an example
Tested in:
FF3.5+
FF4+
Safari 5+
Chrome 11+
IE9+
HTML
<div class="cn"><div class="inner">your content</div></div>
CSS
.cn {
display: table-cel...
AngularJs “controller as” syntax - clarification?
... which partially solves this problem, some folks prefer to write code in a more OOP manner, which in my opinion, makes the code easier to reason about and test.
Here's a fiddle to demonstrate: http://jsfiddle.net/HB7LU/5796/
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How to merge a specific commit in Git
...hough if used sparingly there are heuristics that will paper over this).
More importantly though, it ignores functional dependencies - if C actually used a function defined in B, you'll never know.
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Get MD5 hash of big files in Python
... Since you're not reading the entire file into memory, this won't use much more than 8192 bytes of memory.
In Python 3.8+ you can do
import hashlib
with open("your_filename.txt", "rb") as f:
file_hash = hashlib.md5()
while chunk := f.read(8192):
file_hash.update(chunk)
print(file_h...
How to pattern match using regular expression in Scala?
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Why does this loop produce “warning: iteration 3u invokes undefined behavior” and output more than 4
...t even I can see the addl $1000000000, %edi line.
The resulting code looks more like
for(int i = 0; /* nothing, that is - infinite loop */; i += 1000000000)
std::cout << i << std::endl;
This comment of @T.C.:
I suspect that it's something like: (1) because every iteration with...
Handler vs AsyncTask
... to the number of jobs that can be scheduled using AsyncTasks.
Handler is more transparent of the two and probably gives you more freedom; so if you want more control on things you would choose Handler otherwise AsynTask will work just fine.
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Command to get nth line of STDOUT
...just for variety:
ls -l | sed -n 2p
Using this alternative, which looks more efficient since it stops reading the input when the required line is printed, may generate a SIGPIPE in the feeding process, which may in turn generate an unwanted error message:
ls -l | sed -n -e '2{p;q}'
I've seen t...