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How can two strings be concatenated?
...
or if you often want to join strings from a vector (like implode() from PHP):
implode <- function(..., sep='') {
paste(..., collapse=sep)
}
Allows you do do this:
p('a', 'b', 'c')
#[1] "abc"
vec <- c('a', 'b', 'c')
implode(vec)
#[1] "abc"
implode(vec, sep=', ')
#[1] "a, b, c"
Als...
How to use the PI constant in C++
...rd library which is magnitudes bigger than C++' (e.g. Python, Haskell, C#, PHP, Delphi, Erlang, Java, ......). From personal experience, that elitist not gonna use libs-opinion is a pest and probably the number one reason for bad software written in C++.
– Sebastian Mach
...
How to log cron jobs?
... @Danijel serverfault.com/a/117365/193377 0 0 * * * /some/path/to/a/file.php > $HOME/date +\%Y\%m\%d\%H\%M\%S-cron.log 2>&1
– AnneTheAgile
Oct 11 '17 at 22:11
...
Excel RTD(Excel Real-Time Data)实时刷新数据技术 - C/C++ - 清泛网 - 专注C/C++及内核技术
...。
异步的，耗时的数据请求：传统的UDF函数存在的一个问题是，他是同步的，就是说，如果某个函数的执行时间过长，会导致前端界面的卡顿，尤其是在UDF函数访问数据库，WebService，或复杂的计算过程等不确定性及耗时的执行...
What is the difference between inversedBy and mappedBy?
... write code on the fly cannot ever been considered best practice, it's not php native, and even not included by default in all frameworks. Having all the info about an entity in one place is an anti-argument. Since when grouping all your code into one place is a good thing ? It is a pain to write, a...
Differences between action and actionListener
...that describes the relationship:
http://www.java-samples.com/showtutorial.php?tutorialid=605
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Detect Click into Iframe using JavaScript
....blur( function() {
if( overiFrame != -1 )
$.post('log.php', {id:overiFrame}); /* example, do your stats here */
});
});
Very elegant solution with a minor downside: if a user presses ALT-F4 when hovering the mouse over an iFrame it will log it as a click. This only happene...
Which characters are valid in CSS class names/selectors?
...ger's comment over two years later, according to w3counter.com/globalstats.php IE6 is now used by less than 3% of users, behind IE9 on 4%, IE7 on 9%, IE8 on 22%. All versions of Firefox have 28%, all versions of Chrome have 17%.
– Daniel Earwicker
Jun 15 '11 at...
Entity Attribute Value Database vs. strict Relational Model Ecommerce
... Joomla (regular relational structure):
https://forum.virtuemart.net/index.php?topic=58686.0
It seems, that Magento's EAV performance is a real showstopper.
That's why I'm leaning towards a normalized structure. To overcome the lack of flexibility I'm thinking about adding some separate data dicti...
How do I create an Excel (.XLS and .XLSX) file in C# without installing Microsoft Office?
...brary posted on Google Code:
ExcelLibrary
This looks to be a port of the PHP ExcelWriter that you mentioned above. It will not write to the new .xlsx format yet, but they are working on adding that functionality in.
It's very simple, small and easy to use. Plus it has a DataSetHelper that lets yo...