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SSH configuration: override the default username [closed]
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If you only want to ssh a few times, such as on a borrowed or shared computer, try:
ssh buck@hostname
or
ssh -l buck hostname
share
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improve this ...
What are OLTP and OLAP. What is the difference between them?
...e often very complex and involve aggregations. For OLAP systems a response time is an effectiveness measure. OLAP applications are widely used by Data Mining techniques. In OLAP database there is aggregated, historical data, stored in multi-dimensional schemas (usually star schema). Sometime query n...
How do I use format() on a moment.js duration?
...set up
let start = moment("2018-05-16 12:00:00"); // some random moment in time (in ms)
let end = moment("2018-05-16 12:22:00"); // some random moment after start (in ms)
let diff = end.diff(start);
// execution
let f = moment.utc(diff).format("HH:mm:ss.SSS");
alert(f);
Have a look at the JSFiddl...
SAML vs federated login with OAuth
...d. You basically can establish trust between your app and twitter. First time you go to link the app to twitter, you do the classic prompt to log into twitter, and then that confirmation box pops up and asks "Would you like to grant access to «your app name»?" once you click "yes", the trust has...
How to colorize diff on the command line?
When I have a diff, how can I colorize it so that it looks good? I want it for the command line, so please no GUI solutions.
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Remove duplicated rows using dplyr
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This solution appears to be much faster (10 times in my case) than the one provided by Hadley.
– Calimo
Nov 8 '14 at 16:43
101
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How to sort strings in JavaScript
...te that localeCompare() is only supported in modern browsers: IE11+ at the time of writing, see developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/…
– Adrien Be
Sep 26 '14 at 10:39
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Does name length impact performance in Redis?
...u need to balance usability with space considerations. The overall lookup time isn't significantly longer with keys, but space taken up would be.
– Ted Naleid
Mar 26 '13 at 20:29
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LINUX: Link all files from one to another directory [closed]
I want to link ( ln -s ) all files that are in /mnt/usr/lib/ into /usr/lib/
4 Answers
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stl 字符串std::string作为std::map主键key的实例 - C/C++ - 清泛网 - 专注C/C++及内核技术
stl 字符串std::string作为std::map主键key的实例本文通过一个实例介绍std::map字符串作为key的常见用法，并使用find_if实现map按value值查找。代码如下：
#include <map>
#include <string>
#include <algorithm>
using namespace std;
class map_value_finder
{...