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Is returning by rvalue reference more efficient?
...p;b) {
return std::move(a < b? a: b);
}
int main() {
const std::string s = min_(std::string("A"), std::string("B"));
fprintf(stderr, "min: %s\n", s.c_str());
return 0;
}
As an interesting observation, on my machine clang++ -O3 generates 54 instructions for code above versus 62 ins...
When should I use Write-Error vs. Throw? Terminating vs. non-terminating errors
...tem.Net.HttpWebRequest]::Create($url)
}
else {
$URL_Format_Error = [string]"Connection protocol not specified. Recommended action: Try again using protocol (for example 'http://" + $url + "') instead. Function aborting..."
Write-Error $URL_Format_Error
return
}
It looks like t...
What is Model in ModelAndView from Spring MVC?
...der to hold the information you want to display on the view. It could be a string, which is in your above example, or it could be an object containing bunch of properties.
Example 1
If you have...
return new ModelAndView("welcomePage","WelcomeMessage","Welcome!");
... then in your jsp, to displ...
汇编语言超浓缩教程（汇编入门必备） - C/C++ - 清泛网 - 专注C/C++及内核技术
...段寄存器；ＳＳ（Stack Segment）：堆栈段寄存器；ＥＳ（Extra Segment）：附加段寄存器。当一个程序要执行时，就要决定程序代码、数据和堆栈各要用到内存的哪些位置，通过设定段寄存器 CS，DS，SS 来指向这些起始位置。通常是...
Grepping a huge file (80GB) any way to speed it up?
...ocale instead of UTF-8.
2) Use fgrep because you're searching for a fixed string, not a regular expression.
3) Remove the -i option, if you don't need it.
So your command becomes:
LC_ALL=C fgrep -A 5 -B 5 'db_pd.Clients' eightygigsfile.sql
It will also be faster if you copy your file to RAM di...
How to set a default value with Html.TextBoxFor?
...et a default value on a textbox because there is an overload Html.TextBox(string name, object value) . When I tried using the Html.TextBoxFor method, my first guess was to try the following which did not work:
...
How do I resolve a HTTP 414 “Request URI too long” error?
..., the difference is that the GET request has the url and parameters in one string and then sends null:
http.open("GET", url+"?"+params, true);
http.send(null);
whereas the POST request sends the url and the parameters in separate commands:
http.open("POST", url, true);
http.send(params);
Here ...
MongoDB: How to update multiple documents with a single command?
...
How to do it for oldvalue+"some string"
– Mahesh K
Nov 14 '17 at 11:03
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Differences between contentType and dataType in jQuery ajax function
...ntType (default: 'application/x-www-form-urlencoded; charset=UTF-8')
Type: String
When sending data to the server, use this content type. Default is "application/x-www-form-urlencoded; charset=UTF-8", which is fine for most cases. If you explicitly pass in a content-type to $.ajax(), then it'll alwa...
What does the “@” symbol do in Powershell?
...ters, e.g. using the hash table just above, Copy-Item @HashArguments
Here strings (see about_quoting_rules)
Let's you create strings with easily embedded quotes, typically used for multi-line strings, e.g.:
$data = @"
line one
line two
something "quoted" here
"@
Because this type of question (w...