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What is std::promise?
... via the member function get(), which effectively synchronizes the program by waiting for the result. Alternatively, a future supports wait_for(), which can be used to probe whether or not the result is already available. Futures should be thought of as the asynchronous drop-in replacement for...
What is considered a good response time for a dynamic, personalized web application? [closed]
...s. Here's a quick summary.
Response Times: The 3 Important Limits
by Jakob Nielsen on January 1, 1993
Summary: There are 3 main time limits (which are determined by human perceptual abilities) to keep in mind when optimizing web and application performance.
Excerpt from Chapter 5 ...
The request was aborted: Could not create SSL/TLS secure channel
...atibility reasons
And now, it works perfectly.
ADDENDUM
As mentioned by Robin French; if you are getting this problem while configuring PayPal, please note that they won't support SSL3 starting by December, 3rd 2018. You'll need to use TLS. Here's Paypal page about it.
...
Smooth scrolling when clicking an anchor link
...w/
If your target element does not have an ID, and you're linking to it by its name, use this:
$('a[href^="#"]').click(function () {
$('html, body').animate({
scrollTop: $('[name="' + $.attr(this, 'href').substr(1) + '"]').offset().top
}, 500);
return false;
});
For incr...
HttpSecurity, WebSecurity and AuthenticationManagerBuilder
...enticationManagerBuilder) is used to establish an authentication mechanism by allowing AuthenticationProviders to be added easily: e.g. The following defines the in-memory authentication with the in-built 'user' and 'admin' logins.
public void configure(AuthenticationManagerBuilder auth) {
auth...
Are Exceptions in C++ really slow
...s the Zero-Cost model exceptions.
The idea is that instead of losing time by setting up a guard and explicitly checking for the presence of exceptions everywhere, the compiler generates a side table that maps any point that may throw an exception (Program Counter) to the a list of handlers. When an...
Multiple simultaneous downloads using Wget?
...m using wget to download website content, but wget downloads the files one by one.
15 Answers
...
How do I set the default locale in the JVM?
...ale.getDefault() method returns the locale that was initially determined
by the Java Virtual Machine (JVM) when it first loaded. That is, the
JVM determines the default locale from the host environment. The host
environment's locale is determined by the host operating system and
the user pre...
MySQL: Enable LOAD DATA LOCAL INFILE
... Works for Mac, too. For Mac user, /mysql/my.cnf does not exist by default. Just create the directory and the file, and paste these lines into the file.
– Zheng Liu
Dec 27 '18 at 3:15
...
MySQL DISTINCT on a GROUP_CONCAT()
...CAT has DISTINCT attribute:
SELECT GROUP_CONCAT(DISTINCT categories ORDER BY categories ASC SEPARATOR ' ') FROM table
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