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Pandas aggregate count distinct
...user activity and I want to generate a report of total duration and the number of unique users per day.
3 Answers
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Browser detection in JavaScript? [duplicate]
How do I determine the exact browser and version using JavaScript?
26 Answers
26
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How to replace master branch in Git, entirely, from another branch? [duplicate]
I have two branches in my Git repository:
5 Answers
5
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Download a single folder or directory from a GitHub repo
... only a specific folder or directory from a remote Git repo hosted on GitHub?
36 Answers
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How can I get the SQL of a PreparedStatement?
...ry" :
You have a statement, containing placeholders
it is sent to the DB server
and prepared there
which means the SQL statement is "analysed", parsed, some data-structure representing it is prepared in memory
And, then, you have bound variables
which are sent to the server
and the prepared s...
How do you get the index of the current iteration of a foreach loop?
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The foreach is for iterating over collections that implement IEnumerable. It does this by calling GetEnumerator on the collection, which will return an Enumerator.
This Enumerator has a method and a property:
MoveNext()
Current
Current returns the object that Enumerator is currently on, Move...
What is the best way to programmatically detect porn images? [closed]
Akismet does an amazing job at detecting spam comments. But comments are not the only form of spam these days. What if I wanted something like akismet to automatically detect porn images on a social networking site which allows users to upload their pics, avatars, etc?
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Generating a random password in php
...Security warning: rand() is not a cryptographically secure pseudorandom number generator. Look elsewhere for generating a cryptographically secure pseudorandom string in PHP.
Try this (use strlen instead of count, because count on a string is always 1):
function randomPassword() {
$alphabet =...
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...、数据库[/url]线程数、数据池连接数）。
3.中间件：1.Jboss 2. Apache（包括线程数、连接数、日志）。
4.网络： 吞吐量、吞吐率。
5.应用： jvm内存、日志、Full GC频率。
6.监控工具（LoadRunner[/url]）：用户执行情况、场景状态、...
How to implement “confirmation” dialog in Jquery UI dialog?
I am try to use JQuery UI Dialog to replace the ugly javascript:alert() box.
In my scenario, I have a list of items, and next to each individual of them, I would have a "delete" button for each of them.
the psuedo html setup will be something follows:
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