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Replacement for “rename” in dplyr
... function in dplyr (yet): http://cran.rstudio.org/web/packages/dplyr/dplyr.pdf
The function below works (almost) the same if you don't want to load both plyr and dplyr
rename <- function(dat, oldnames, newnames) {
datnames <- colnames(dat)
datnames[which(datnames %in% oldnames)] <- ne...
How to set response filename without forcing “save as” dialog
...
Not working for PDF in IE11.0.96. No surprise, Chrome works just fine.
– user1566694
Mar 21 '19 at 17:39
add a comme...
WKWebView not loading local files under iOS 8
...leURL = URL(fileURLWithPath: Bundle.main.path(forResource:"file", ofType: "pdf")!)
if #available(iOS 9.0, *) {
// iOS9 and above. One year later things are OK.
webView.loadFileURL(fileURL, allowingReadAccessTo: fileURL)
} else {
// iOS8. Things can (sometimes) be wor...
Static hosting on Amazon S3 - DNS Configuration
...xample.com.s3-website-us-east-1.amazonaws.com
From their Manage DNS guide pdf it says the "@ record" refers to "your domain in its purest form with no subdomain" ie the naked domain stackoverflow.com
But it doesn't mention what the "* record" is, I assumed it would be to catch all sub domains and ...
How to reorder data.table columns (without copying)
...this in the first item here: datatable.r-forge.r-project.org/datatable-faq.pdf
– Frank
Dec 2 '15 at 21:51
...
What is the reason behind cbegin/cend?
...
From http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2004/n1674.pdf:
so that a programmer can directly obtain a const_iterator from even a
non-const container
They gave this example
vector<MyType> v;
// fill v ...
typedef vector<MyType>::iterator iter;
for( iter it =...
How do I handle newlines in JSON?
...ion, http://www.ecma-international.org/publications/files/ECMA-ST/ECMA-404.pdf:
A string is a sequence of Unicode code points wrapped with quotation marks
(U+0022). All characters may be placed within the quotation marks except for the
characters that must be escaped: quotation mark (U+0...
Check if a program exists from a Makefile
... $(error "dot is not available please install graphviz")
endif
dot -Tpdf -o pres.pdf pres.dot
It works beautifully because "command -v" doesn't print anything if the executable is not available, so the variable DOT never gets defined and you can just check it whenever you want in your code....
Logstash实践: 分布式系统的日志监控 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...时日志的？
参考文献：
Logstash 最佳实践 -- github上的中文译本
Logstash 官方文档
Logstash 分布式 系统 日志
Where can I get a “useful” C++ binary search algorithm?
... Good link; and also good link in the link: lafstern.org/matt/col1.pdf, which describes how lookups implemented with a sorted vector, rather than set (though both are log(N)), have significantly better constants of proportionality and are ~twice as fast (the disadvantage being a larger INSER...