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When and how should I use a ThreadLocal variable?
...eople can abuse it by using it as global variables.
I have copied the text from the mentioned book but code 3.10 is missing as it is not much important to understand where ThreadLocal should be use.
Thread-local variables are often used to prevent sharing in designs based on mutable Singletons or g...
How to get rspec-2 to give the full trace associated with a test failure?
...et it, neither this or the accepted answer give you backtrace further then from your spec file. Or it doesn't work only for me o_O
– janko-m
Sep 4 '12 at 16:16
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How do I retrieve the number of columns in a Pandas data frame?
... my guess is that it does not call a function but just reads the attribute from memory?
– mkln
Nov 30 '13 at 18:59
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How do I write stderr to a file while using “tee” with a pipe?
...mp;2)
We use process substitution again to make a tee process that reads from STDIN and dumps it into stderr.log. tee outputs its input back on STDOUT, but since its input is our STDERR, we want to redirect tee's STDOUT to our STDERR again. Then we use file redirection to redirect command's STDE...
Programmatically scroll a UIScrollView
...y: y), animated: true)
See the guide "Scrolling the Scroll View Content" from Apple as well.
To do slideshows with UIScrollView, you arrange all images in the scroll view, set up a repeated timer, then -setContentOffset:animated: when the timer fires.
But a more efficient approach is to use 2 im...
Find the min/max element of an Array in JavaScript
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jsperf.com/array-min-max-random/1 starting from 60 elements Math methods are breaking equal with while cycles, if array size is greater than 60, than Math methods wins. Larger the array - greater the Math methods overtake. ( for 100 elems Math.min/max is 10% faster, f...
How to get the currently logged in user's user id in Django?
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Where is request coming from?
– Sören
Nov 20 '18 at 21:33
Link to ...
How to convert a string Date to long millseconds
....util.Date using date formatter
Use getTime() to obtain count of millisecs from date
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Is there a way to tell git to only include certain files instead of ignoring certain files?
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I haven't had need to try this myself, but from my reading of TFM it looks like a negated pattern would do what you want. You can override entries in .gitignore with later negated entries. Thus you could do something like:
*.c
!frob_*.c
!custom.c
To have it ignore ...
Disable browsers vertical and horizontal scrollbars
...the answer is not good, just stating the obvious about the lower votes. +1 from me anyway.
– Nope
Oct 17 '13 at 15:26
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