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Slicing of a NumPy 2d array, or how do I extract an mxm submatrix from an nxn array (n>m)?
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answered Nov 23 '10 at 16:07
Justin PeelJustin Peel
44.3k55 gold badges5353 silver badges7777 bronze badges
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How do you print in a Go test using the “testing” package?
...Something
Say hi
--- PASS: TestPrintSomething (0.00 seconds)
v_test.go:10: Say bye
PASS
ok so/v 0.002s
Command go
Description of testing flags
-v
Verbose output: log all tests as they are run. Also print all
text from Log and Logf calls even if the test succeeds.
Pac...
To ternary or not to ternary? [closed]
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Use it for simple expressions only:
int a = (b > 10) ? c : d;
Don't chain or nest ternary operators as it hard to read and confusing:
int a = b > 10 ? c < 20 ? 50 : 80 : e == 2 ? 4 : 8;
Moreover, when using ternary operator, consider formatting the code in a way ...
Checking for empty queryset in Django
...turned.
– minmaxavg
Dec 3 '15 at 15:10
1
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Exit a Script On Error
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answered Dec 7 '10 at 21:13
Byron WhitlockByron Whitlock
48.4k2626 gold badges112112 silver badges164164 bronze badges
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Extract elements of list at odd positions
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TadeckTadeck
110k2222 gold badges137137 silver badges184184 bronze badges
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How can I use Python to get the system hostname?
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1095
Use socket and its gethostname() functionality. This will get the hostname of the computer wh...
How to check if field is null or empty in MySQL?
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edited Feb 13 at 4:56
U10-Forward
36.5k77 gold badges4242 silver badges6363 bronze badges
answered Feb 13 at 3:56
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How to remove all the occurrences of a char in c++ string
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10 Answers
10
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ReactJS: Modeling Bi-Directional Infinite Scrolling
... render them, it's really cheap to just allocate them and discard them. If 10k allocations is too big, you can instead pass a function that takes a range and return the elements.
<List>
{thousandelements.map(function() { return <Element /> })}
</List>
Your List component is ke...