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How to add border radius on table row
...hese styles:
table { border-collapse: separate; }
td { border: solid 1px #000; }
tr:first-child td:first-child { border-top-left-radius: 10px; }
tr:first-child td:last-child { border-top-right-radius: 10px; }
tr:last-child td:first-child { border-bottom-left-radius: 10px; }
tr:last-child td:last-ch...
Best way to store JSON in an HTML attribute?
...tacks.
In any case, the following escaping table will work:
NUL -> \u0000
CR -> \n or \u000a
LF -> \r or \u000d
" -> \u0022
& -> \u0026
' -> \u0027
+ -> \u002b
/ -> \/ or \u002f
< -> \u003c
> -> \u003e
\ -> \\ or \u005c
U+2028 -> \u2028
U+2029 -> \...
Length of an integer in Python
... is already behind for even quite small numbers
timeit math.log10(2**8)
1000000 loops, best of 3: 746 ns per loop
timeit len(str(2**8))
1000000 loops, best of 3: 1.1 µs per loop
timeit math.log10(2**100)
1000000 loops, best of 3: 775 ns per loop
timeit len(str(2**100))
100000 loops, best of 3: ...
Pandas conditional creation of a series/dataframe column
...meit df['color'] = df.Set.map( lambda x: 'red' if x == 'Z' else 'green')
1000 loops, best of 3: 239 µs per loop
1000 loops, best of 3: 523 µs per loop
1000 loops, best of 3: 263 µs per loop
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Try-catch speeding up my code?
...whole loop:
var stopwatch = Stopwatch.StartNew();
for (int i = 1; i < 100000000; i++)
{
Fibo(100);
}
stopwatch.Stop();
Console.WriteLine("Elapsed time: {0}", stopwatch.Elapsed);
That way you're not at the mercy of tiny timings, floating point arithmetic and accumulated error.
Having made ...
How do I measure request and response times at once using cURL?
...ime_namelookup: 0.001s
time_connect: 0.037s
time_appconnect: 0.000s
time_pretransfer: 0.037s
time_redirect: 0.000s
time_starttransfer: 0.092s
----------
time_total: 0.164s
Make a Linux/Mac shortcut (alias)
alias curltime="curl -w \"@$HOME/.curl-...
What's the best way to convert a number to a string in JavaScript? [closed]
...ly, even though I typically do it like this for simple convenience, over 1,000s of iterations it appears for raw speed there is an advantage for .toString()
See Performance tests here (not by me, but found when I went to write my own):
http://jsben.ch/#/ghQYR
Fastest based on the JSPerf test above...
How to center an element horizontally and vertically
...left;
background: #fff;
padding : 20px;
border : 1px solid #000;
}
<div class="outer-container">
<div class="inner-container">
<div class="centered-content">
Center this!
</div>
</div>
</div>
See also this Fidd...
LINQ: When to use SingleOrDefault vs. FirstOrDefault() with filtering criteria
...ut 10 times faster than SingleOrDefault , using a List<MyClass> of 9,000,000 elements, class contains 2 integers and the Func contains a search of these two integers. Searching 200 times in a loop took 22 seconds on var v = list.SingleOrDefault(x => x.Id1 == i && x.Id2 == i); and va...
Get last n lines of a file, similar to tail
... timeit it seems pretty fast. Tailing 100 lines of a log file that has 100,000 lines:
>>> timeit.timeit('tail.tail(f, 100, 4098)', 'import tail; f = open("log.txt", "r");', number=10)
0.0014600753784179688
>>> timeit.timeit('tail.tail(f, 100, 4098)', 'import tail; f = open("log.tx...