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How big can a MySQL database get before performance starts to degrade
...e have a single table which is 200+ GiB and a few others in the 50-100 GiB range. Everything I said before holds. It still performs just fine, but the problems of running full dataset operations have become worse.
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How can I tell if one commit is a descendant of another commit?
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This kind of operations relies on the notion of range of revisions detailed in the SO question: "Difference in ‘git log origin/master’ vs ‘git log origin/master..’".
git rev-list should be able to walk back from a commit, up until another if reachable.
So I would...
How can I open multiple files using “with open” in Python?
... print('exit {!r}'.format(self))
return True
xs = [X() for _ in range(3)]
with ExitStack() as stack:
print(len(stack._exit_callbacks)) # number of callbacks called on exit
nums = [stack.enter_context(x) for x in xs]
print(len(stack._exit_callbacks))
print(len(stack._exit_cal...
Why is x86 ugly? Why is it considered inferior when compared to others? [closed]
...gly small as CPUs become more and more limited by memory bandwidth than by raw computation, but many "x86 bashing" articles and attitudes come from an era when this cost was comparatively much larger.
Update 2016: Anandtech has posted a discussion regarding opcode sizes under x64 and AArch64.
ED...
Wrapping StopWatch timing with a delegate or lambda?
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@Jay I agree that "foreach" with Enumerable.Range looks a bit more "modern", but my tests show that it's about four times slower than a "for" loop over a large count. YMMV.
– Matt Hamilton
Oct 25 '08 at 23:16
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How to use arguments from previous command?
... The word matched by the most recent ‘?string?’ search.
x-y A range of words; ‘-y’ abbreviates ‘0-y’.
* All of the words but the zeroth.
This is a synonym for ‘1-$’.
It is not an error to use * if there is just one word in
the event; t...
Detect and exclude outliers in Pandas data frame
...25)
q3 = df_in[col_name].quantile(0.75)
iqr = q3-q1 #Interquartile range
fence_low = q1-1.5*iqr
fence_high = q3+1.5*iqr
df_out = df_in.loc[(df_in[col_name] > fence_low) & (df_in[col_name] < fence_high)]
return df_out
...
How can I check if an ip is in a network in Python?
...opAmount = 0 #find out how much of that int I need to cut off
for i in range(maskLengthFromRight):
if i < len(binString):
chopAmount += int(binString[len(binString)-1-i]) * 2**i
minVal = ipNetworkInt-chopAmount
maxVal = minVal+2**maskLengthFromRight -1
return...
Why are Python lambdas useful? [closed]
...lt3 = [x for x in [1, 2, 3, 4, 5, 6, 7, 8, 9] if x % 3 == 0]
(or even as range(3,10,3)), but there are many other, more sophisticated use cases where you can't use a list comprehension and a lambda function may be the shortest way to write something out.
Returning a function from another functio...
Removing Java 8 JDK from Mac
...in their Info.plist file (or something along those lines, e.g what version range they support or something). The change to JAVA_HOME will only apply to the current terminal session, but I think /usr/libexec/java_home might impact other sessions/environments. (I can't easily verify it, cause I force ...