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Convert audio files to mp3 using ffmpeg
...his example:
-i - input file
-vn - Disable video, to make sure no video (including album cover image) is included if the source would be a video file
-ar - Set the audio sampling frequency. For output streams it is set by default to the frequency of the corresponding input stream. For input stream...
Create a .txt file if doesn't exist, and if it does append a new line
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I'm not suggesting it did; I'm saying that without including that in your answer, the original poster won't know why you made the changes you made or what they're supposed to accomplish. Always include all relevant information when you post, so that people will know all of wh...
Is there a [Go to file…]?
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Since Xcode 4 (including 5, 6, 7, 8, 9, 10, 11 and 12) it's ⌘ + ⇧ + O
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display:inline vs display:block [duplicate]
...nt, whereas inline elements do not.
Some examples of block level elements include: div, h1, p, and hr HTML tags.
Some examples of inline level elements include: a, span, strong, em, b, and i HTML tags.
Personally, I like to think of inline elements as typographical elements. This isn't entirely o...
What's the state of the art in email validation for Rails?
...em for email validation in Rails 3. I'm kinda surprised that Rails doesn't include something like this by default.
http://github.com/balexand/email_validator
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How to Convert Boolean to String
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See Christian's answer for more detail. Specifically, include the second argument (true).
– Jimothy
May 22 '13 at 17:37
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How to emulate C array initialization “int arr[] = { e1, e2, e3, … }” behaviour with std::array?
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Using trailing return syntax make_array can be further simplified
#include <array>
#include <type_traits>
#include <utility>
template <typename... T>
auto make_array(T&&... t)
-> std::array<std::common_type_t<T...>, sizeof...(t)>
{
return {...
Difference between \w and \b regular expression meta characters
...rd character on the other. (Examples of things that aren't word characters include whitespace, beginning and end of the string, etc.)
\w matches a, b, c, d, e, and f in "abc def"
\b matches the (zero-width) position before a, after c, before d, and after f in "abc def"
See: http://www.regular-expr...
Lua简明教程 - 脚本技术 - 清泛IT论坛，有思想、有深度
...if age > 60 and sex ~="Female" then
print("old man without country!")
elseif age < 20 then
io.write("too young, too naive!\n")
else
local age = io.read()
print("Your age is "..age)
end复制代码
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Dynamic LINQ OrderBy on IEnumerable / IQueryable
...(e.g. OrderBy("Name, Age DESC")) for ordering. Unfortunately, the method included only works on IQueryable<T> . Is there any way to get this functionality on IEnumerable<T> ?
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