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Why does base64 encoding require padding if the input length is not divisible by 3?
What is the purpose of padding in base64 encoding. The following is the extract from wikipedia:
3 Answers
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What is an idiomatic way of representing enums in Go?
I'm trying to represent a simplified chromosome, which consists of N bases, each of which can only be one of {A, C, T, G} .
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Maintain the aspect ratio of a div with CSS
...ht of the element. This allows the element's aspect ratio to be preserved, based on the viewport width.
vw : 1/100th of the width of the viewport. [MDN]
Alternatively, you can also use vh for viewport height, or even vmin/vmax to use the lesser/greater of the viewport dimensions (discussion h...
Using variables inside a bash heredoc
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Linux 进程卡住了怎么办？ - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...fffffff8122169e>] SyS_newstat+0xe/0x10
[<ffffffff8186281b>] entry_SYSCALL_64_fastpath+0x22/0xcb
[<ffffffffffffffff>] 0xffffffffffffffff
这时候按 Ctrl+C 也不能退出。
root@localhost:~# ls /jfs
^C
^C^C^C^C^C
但是用 strace 却能唤醒它，并且开始处理之前的中断信...
Regex - how to match everything except a particular pattern
...igits, B is digits within <a tag
The regex: <a.*?<\/a>|(\d+)
Demo (look at Group 1 in the lower right pane)
Reference
How to match pattern except in situations s1, s2, s3
How to match a pattern unless...
s...
Javascript equivalent of Python's zip function
... efficient way of merging [1,2] and [7,8] into [[1,7], [2,8]]
Note: the base types such as false and undefined do not posess a prototypal object-hierarchy and thus do not expose a toString function. Hence these are shown as empty in the output.
As parseInt's second argument is the base/number rad...
What is the difference between SQL Server 2012 Express versions?
... LocalDB or Express depending on your needs above.
That's the SQLEXPRWT_x64_ENU.exe download.... (WT = with tools)
Express with Advanced Services (contains the database engine, Express Tools, Reporting Services, and Full Text Search)
This package contains all the components of SQL Express...
Read a zipped file as a pandas DataFrame
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Add Bootstrap Glyphicon to Input Box
.../div>
</form>
DEMO : http://jsfiddle.net/LS2Ek/1/
This demo is based on an example in Bootstrap docs. Scroll down to "With Optional Icons" here http://getbootstrap.com/css/#forms-control-validation
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