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How to sort two lists (which reference each other) in the exact same way
...ine for small lists:
>>> %timeit zip(*sorted(zip(list1, list2)))
100000 loops, best of 3: 3.3 us per loop
>>> %timeit tups = zip(list1, list2); tups.sort(); zip(*tups)
100000 loops, best of 3: 2.84 us per loop
On the other hand, for larger lists, the one-line version could be fa...
你真的了解熊市有多么可怕吗？ - 创意 - 清泛网 - 专注C/C++及内核技术
...小时跌了46%还多。有的股票在一周内的成交量为零。来了100个贼，被消灭了95个，剩下的成了精，死不了，活下来了。
熊市的初级阶段：经历股价的大幅上涨以后，很多股票长了几倍甚至几十倍，这时候市场上该炒的股票都炒...
SVG get text element width
...yle.fontFamily = 'YOUR_FONT_GOES_HERE';
div.style.fontSize = '100';
div.style.border = "1px solid blue"; // for convenience when visible
div.innerHTML = "YOUR STRING";
document.body.appendChild(div);
var offsetWidth = d...
How many files can I put in a directory?
...t time of 200-400 ms. As a comparison on another site I have with a around 100 files in a directory the image is displayed after just ~40ms of waiting.
I've given this answer as most people have just written how directory search functions will perform, which you won't be using on a thumb folder - j...
How to TryParse for Enum value?
...is available from MSDN: msdn.microsoft.com/library/vstudio/dd991317%28v=vs.100%29.aspx
– Christian
Sep 19 '13 at 9:36
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List of ANSI color escape sequences
...erm (not in standard) ║
║ 100–107 ║ Set bright background color ║ aixterm (not in standard) ║
╚══════════╩═════════════════════...
The performance impact of using instanceof in Java
...etClass() == _.class implementation
I used jmh to run the benchmark with 100 warmup calls, 1000 iterations under measuring, and with 10 forks. So each option was measured with 10 000 times, which takes 12:18:57 to run the whole benchmark on my MacBook Pro with macOS 10.12.4 and Java 1.8. The bench...
What is “vectorization”?
...thmetic operation. eg. if we want to add 10 to value if it is greater then 100. we can either.
if(x[i] > 100) x[i] += 10; // this will branch execution flow.
or we can model the condition into arithmetic operation creating a condition vector c,
c[i] = x[i] > 100; // storing the condition ...
How to find the length of a string in R
... uq max neval
nchar(x) 11.868 12.776 13.1590 13.6475 41.815 100
str_length(x) 30.715 33.159 33.6825 34.1360 173.400 100
stri_length(x) 2.653 3.281 4.0495 4.5380 19.966 100
and also works fine with NA's
nchar(NA)
## [1] 2
stri_length(NA)
## [1] NA
...
My attempt at value initialization is interpreted as a function declaration, and why doesn't A a(())
...classes which takes two arguments is std::string
std::string hundred_dots(100, '.');
This is all well and fine (technically, it would have most vexing parse if it would be written as std::string wat(int(), char()), but let's be honest - who would write that? But let's assume this code has a vexin...