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Round to at most 2 decimal places (only if necessary)
...e result of an arithmetic operation, as it can swallow some floating point error delta.
It's not useful when the value comes from a direct source (e.g.: literal, user input or sensor).
EDIT (2019):
Like @maganap and some peoples have pointed out, it's best to add Number.EPSILON before multiplying...
How to send only one UDP packet with netcat?
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nc 1.10-41+b1 does not accept -w0. Error: invalid wait-time 0
– palik
Apr 18 '19 at 10:04
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What exactly does git's “rebase --preserve-merges” do (and why?)
...wever, git may reject the attempt to replay m1 on top of D. You can get an error like so:
error: Commit 90caf85 is a merge but no -m option was given.
fatal: cherry-pick failed
It looks like one forgot to pass a flag to git, but the underlying problem is that git dislikes creating empty commits.
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Most efficient method to groupby on an array of objects
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There's a reference error on your code in jsBin.
– Rod Talingting
Jul 20 at 22:37
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Text editor to open big (giant, huge, large) text files [closed]
...ts). I think that on 32 bit systems you get "maximum buffer size exceeded" error on files larger than 128 MB.
– Rafał Dowgird
May 8 '09 at 13:45
87
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Cost of exception handlers in Python
...ing:
import timeit
statements=["""\
try:
b = 10/a
except ZeroDivisionError:
pass""",
"""\
if a:
b = 10/a""",
"b = 10/a"]
for a in (1,0):
for s in statements:
t = timeit.Timer(stmt=s, setup='a={}'.format(a))
print("a = {}\n{}".format(a,s))
print("%.2f usec/p...
What is a .h.gch file?
...les call myfunc(), then the prototype must be provided in each .cpp. It is error prone to type out the prototype in each .cpp file. Therefore, the function prototype is placed in a .h file which is #included in each .cpp file where myfunc is called. Header files only contain information for the com...
Setting up foreign keys in phpMyAdmin?
...al integrity check fails: the UPDATE or DELETE statement will result in an error.
SET NULL
The foreign key values in the referencing row are set to NULL when the referenced row is updated or deleted. This is only possible if the respective columns in the referencing table are nullable. Due to the ...
Get the creation date of a stash
...aracter abbreviation, maybe that was the problem. I think it also threw an error when I tried that command, but I'm on windows, so that's a whole other problem :).
– Jason
Mar 21 '13 at 15:42
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Filter output in logcat by tagname
...) View - VERBOSE
any (*) Activity - VERBOSE
any tag starting with Xyz(*) - ERROR
System.out - SILENT (since I am using Log in my own code)
Here what I type in terminal:
$ adb logcat *View:V *Activity:V Xyz*:E System.out:S
...