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Convert string to a variable name
...reg mentioned, assign to assign the variables.
original_string <- c("x=123", "y=456")
pairs <- strsplit(original_string, "=")
lapply(pairs, function(x) assign(x[1], as.numeric(x[2]), envir = globalenv()))
ls()
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What's the result of += in C and C++?
...aken place.
EDIT : The behavior of (i+=10)+=10 in C++ is undefined in C++98, but well defined in C++11. See this answer to the question by NPE for the relevant portions of the standards.
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i...
How do I parse a URL query parameters, in Javascript? [duplicate]
...ter for the first one). For your example, the above would result in:
{v: "123", p: "hello"}
Here's a working example.
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Bash script processing limited number of commands in parallel
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devnulldevnull
98.1k2727 gold badges195195 silver badges201201 bronze badges
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How to get Linux console window width in Python
... says that "The Console module is currently only available for Windows 95, 98, NT, and 2000." I am looking for a solution that works on Linux. It probably wasn't clear from the tag, I will edit the question accordingly.
– Sergey Golovchenko
Feb 19 '09 at 19:22
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How to get current formatted date dd/mm/yyyy in Javascript and append it to an input [duplicate]
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123
<input type="hidden" id="date"/>
<script>document.getElementById("date").value = n...
How to forward declare a C++ template class?
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I haven't checked the standards, but this works on clang/gcc with -std=c++98 up to -std=c++17, so if it's not officially a standard then it looks to be unofficially so.
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Difference between framework vs Library vs IDE vs API vs SDK vs Toolkits? [closed]
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98
The Car Analogy
IDE: The MS Office of Programming. It's where you type your code, plus some ...
Why can I use auto on a private type?
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To add to the other (good) answers, here's an example from C++98 that illustrates that the issue really doesn't have to do with auto at all
class Foo {
struct Bar { int i; };
public:
Bar Baz() { return Bar(); }
void Qaz(Bar) {}
};
int main() {
Foo f;
f.Qaz(f.Baz()); // Ok
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App Inventor 2 Markdown 自研拓展：Markdown 格式渲染、转换为HTML、生成...
... 拓展下载
.aix 最新拓展下载：
cn.fun123.Markdown.aix
demo下载：
TestMarkdown.aia
也可从“拓展市场”快速导入：
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