blocks|key|2321849|text|你可以做你自己的功能。要知道的主要函数是divrem，它在一个方便的函数调用中给出除数和余数。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2321850|dt=3600.125+

function+hmss(dt)
++++(h,r)+=+divrem(dt,60*60)
++++(m,r)+=+divrem(r,+60)
++++#(s,r)+=+divrem(r,+60)
++++string(Int(h),":",Int(m),":",r)
end

hmss(dt)

hmss(3452.98)|code-block|syntax|javascript|2321851|entityMap^0|K|6|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

You can make your own function. The main function to know is <code>divrem</code> which gives you the divisor as well as the remainder in one convenient function call.

<pre><code>dt=3600.125 

function hmss(dt)
 (h,r) = divrem(dt,60*60)
 (m,r) = divrem(r, 60)
 #(s,r) = divrem(r, 60)
 string(Int(h),":",Int(m),":",r)
end

hmss(dt)

hmss(3452.98)
</code></pre>

blocks|key|685891|text|如果将其转换为日期格式，则可以使用这种方法。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|685892|julia>+t1+=+now()
2017-11-10T10:00:51.974
#+Wait
julia>+t2+=+now()
2017-11-10T10:10:07.895
julia>+x+=+Dates.canonicalize(Dates.CompoundPeriod(t2-t1))
9+minutes,+15+seconds,+921+milliseconds

julia>+x.periods
3-element+Array{Base.Dates.Period,1}:
+9+minutes++++++
+15+seconds++++++
+921+milliseconds

julia>+x.periods[2]
15+seconds

julia>+x.periods[2].value
18|code-block|syntax|javascript|685893|entityMap|0|LINK|mutability|MUTABLE|url|https://discourse.julialang.org/t/how-to-get-dates-period-without-label/6718/8?u=daneel^0|H|4|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

If you convert it to Dates formats then you can use <a href="https://discourse.julialang.org/t/how-to-get-dates-period-without-label/6718/8?u=daneel" rel="nofollow noreferrer">this method</a>.

<pre><code>julia&gt; t1 = now()
2017-11-10T10:00:51.974
# Wait
julia&gt; t2 = now()
2017-11-10T10:10:07.895
julia&gt; x = Dates.canonicalize(Dates.CompoundPeriod(t2-t1))
9 minutes, 15 seconds, 921 milliseconds

julia&gt; x.periods
3-element Array{Base.Dates.Period,1}:
 9 minutes 
 15 seconds 
 921 milliseconds

julia&gt; x.periods[2]
15 seconds

julia&gt; x.periods[2].value
18
</code></pre>

blocks|key|2321825|text|看一看手册中的日期部分。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2321826|不确定这是否是最有效的方法，但这是可行的，例如：|2321827|julia>+Dates.format(DateTime("2017-10-01T01:02:03"),+"H:M:S.s")
"1:2:3.0"|code-block|syntax|javascript|2321828|entityMap|0|LINK|mutability|MUTABLE|url|http://docs.julialang.org/en/stable/stdlib/dates^0|3|8|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@$A|T|B|U|1|V]]|C|$]]|$1|D|3|E|5|6|7|W|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|X|8|@]|9|@]|C|$I|J]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|C|$]]]|L|$M|$5|N|O|P|C|$Q|R]]]]

Have a look at the <a href="http://docs.julialang.org/en/stable/stdlib/dates" rel="nofollow noreferrer">dates section in the manual</a>.

Not sure if this is the most efficient way, but this works for instance:

<pre><code>julia&gt; Dates.format(DateTime("2017-10-01T01:02:03"), "H:M:S.s")
"1:2:3.0"
</code></pre>

blocks|key|685926|text|"""+working+properly+only+if+0<=+sec+<=86400+otherwise+truncating+"""
function+fmtsec(sec,+fmt::Dates.DateFormat)
++++#+nanos+=+Dates.Nanosecond(sec+*+1e9)++#+we+could+get+InexactError+here!
++++nanos+=+Dates.Nanosecond(trunc(Int,+sec+*+1e9))
++++mytime+=+Dates.Time(nanos)
++++Dates.format(mytime,+fmt)
end

fmt+=+dateformat"H:M:S.s"++#+Creating+a+DateFormat+object+is+expensive.+(see+doc)

fmtsec(3600.125,+fmt)++#+"1:0:0.125"|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|685927|编辑:在不截断纳秒的情况下，我们可以得到错误的->|unstyled|685928|julia>+tic();sleep(1);old_fmtsec(toc(),+dateformat"S.s")
elapsed+time:+1.002896514+seconds
ERROR:+InexactError()
Stacktrace:
+[1]+convert(::Type{Int64},+::Float64)+at+./float.jl:679
+[2]+fmtsec(::Float64,+::DateFormat{Symbol("S.s"),Tuple{Base.Dates.DatePart{'S'},Base.Dates.Delim{Char,1},Base.Dates.DatePart{'s'}}})+at+./REPL[47]:2

julia>+tic();sleep(1);old_fmtsec(toc(),+dateformat"S.s")
elapsed+time:+1.002857122+seconds
"1.002"|685929|tic和toc被否决了。toc可能会带来舍入错误，因为它内部使用time_ns，但纳秒转换为秒除以1e9。|offset|length|style|CODE|685930|entityMap^0|0|0|0|0|3|4|3|C|3|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|R|8|@]|9|@]|A|$]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$B|C]]|$1|I|3|J|5|F|7|T|8|@$K|U|L|V|M|N]|$K|W|L|X|M|N]|$K|Y|L|Z|M|N]]|9|@]|A|$]]|$1|O|3|-4|5|F|7|10|8|@]|9|@]|A|$]]]|P|$]]

<pre><code>""" working properly only if 0&lt;= sec &lt;=86400 otherwise truncating """
function fmtsec(sec, fmt::Dates.DateFormat)
 # nanos = Dates.Nanosecond(sec * 1e9) # we could get InexactError here!
 nanos = Dates.Nanosecond(trunc(Int, sec * 1e9))
 mytime = Dates.Time(nanos)
 Dates.format(mytime, fmt)
end

fmt = dateformat"H:M:S.s" # Creating a DateFormat object is expensive. (see doc)

fmtsec(3600.125, fmt) # "1:0:0.125"
</code></pre>

EDIT: Without truncating nanoseconds we could get error -> 

<pre><code>julia&gt; tic();sleep(1);old_fmtsec(toc(), dateformat"S.s")
elapsed time: 1.002896514 seconds
ERROR: InexactError()
Stacktrace:
 [1] convert(::Type{Int64}, ::Float64) at ./float.jl:679
 [2] fmtsec(::Float64, ::DateFormat{Symbol("S.s"),Tuple{Base.Dates.DatePart{'S'},Base.Dates.Delim{Char,1},Base.Dates.DatePart{'s'}}}) at ./REPL[47]:2

julia&gt; tic();sleep(1);old_fmtsec(toc(), dateformat"S.s")
elapsed time: 1.002857122 seconds
"1.002"
</code></pre>

<code>tic</code> &amp; <code>toc</code> are deprecated. <code>toc</code> could bring rounding error because it internally use time_ns but nanoseconds convert to seconds dividing by 1e9.

blocks|key|2321886|text|“朱莉娅”中的toc()和time()的日期使用了UNIX+timestamp，即自1970年1月1日以来的秒。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2321887|同样的情况发生在函数ctime(f)上，它从文件路径f返回时间戳。|2321888|转换非常简单。|2321889|tic()
....
dif+=+toc()
#+My+local+is+Brazil,+one+should+replace+for+its+local+format
Dt+=+DateTime(LibC.strftime(dif),"d/m/y+H:M:S")|code-block|syntax|javascript|2321890|不需要显式导入LibC。|2321891|entityMap^0|7|5|D|6|P|E|0|A|8|Q|1|0|0|0|7|4|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]|$9|V|A|W|B|C]|$9|X|A|Y|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|Z|8|@$9|10|A|11|B|C]|$9|12|A|13|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|14|8|@]|D|@]|E|$]]|$1|J|3|K|5|L|7|15|8|@]|D|@]|E|$M|N]]|$1|O|3|P|5|6|7|16|8|@$9|17|A|18|B|C]]|D|@]|E|$]]|$1|Q|3|-4|5|6|7|19|8|@]|D|@]|E|$]]]|R|$]]

This date from <code>toc()</code> and <code>time()</code> in Julia uses <code>UNIX timestamp</code>, i.e., seconds elapsed since January 1, 1970

The same occurs with the function <code>ctime(f)</code> that returns timestamp from a file path <code>f</code>. 

The conversion is very straightforward.

<pre><code>tic()
....
dif = toc()
# My local is Brazil, one should replace for its local format
Dt = DateTime(LibC.strftime(dif),"d/m/y H:M:S")
</code></pre>

<code>LibC</code> does not have to be imported explicitly

blocks|key|348552|text|我现在试过了，但是做结账有点麻烦--对不起：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|348553|using+Dates
using+Printf

function+formatDuration(duration::Period,+types::Vector{DataType}=[Hour,+Minute,+Second];+addUnit::Bool=false)
++++periods+=+canonicalize(Dates.CompoundPeriod(duration)).periods

++++missingTypes+=+Vector{DataType}(types)

++++newPeriods+=+vcat(periods,+map(t->t(0),+missingTypes))
++++sort!(newPeriods;+rev=true)
++++newPeriods1+=+Vector{Period}()

++++carryover+=+nothing
++++for+(i,+p)+in+enumerate(newPeriods)
++++++++typeofp+=+typeof(p)
++++++++if+!isnothing(carryover)
++++++++++++newPeriod+=+convert(typeofp,+floor(Millisecond(p)+%2B+Millisecond(carryover),+typeofp(1)))
++++++++++++carryover+=+nothing
++++++++else
++++++++++++newPeriod+=+p
++++++++end
++++++++if+(typeof(newPeriod)+in+types)
++++++++++++push!(newPeriods1,+newPeriod)
++++++++++++filter!(e->e≠typeofp,missingTypes)
++++++++else
++++++++++++carryover+=+newPeriod
++++++++end
++++end
++++m+=+map(types)+do+t
++++++++f+=+findfirst(x+->+typeof(x)+==+t,+newPeriods1);
++++++++r+=+isnothing(f)+?+0+:+newPeriods1[f].value;
++++++++@sprintf("%2502d",r)+*+(addUnit+?+lowercase("$t"[1])+:+"")
++++end
++++join(m,+":")
end|code-block|syntax|javascript|348554|用法示例：|348555|@show+formatDuration(Millisecond(3600.125*1000))
#+returns+"01:00:00"
@show+formatDuration(Day(2),+[Hour,+Minute,+Second])
#+returns+"48:00:00"
@show+formatDuration(Second(100000000),+[Hour,+Minute,+Second])
#+returns+"27777:46:40"
@show+formatDuration(Second(100000001),+[Day,+Hour,+Minute,+Second,+Millisecond])
#+returns+"1157:09:46:41:00"
@show+formatDuration(Millisecond(10000000001),+
++++[Week,+Day,+Hour,+Minute,+Second,+Millisecond];+addUnit=true)
#returns+"16w:03d:17h:46m:40s:01m"|348556|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

I had a go now, but doing the carry over is a bit messy sorry:
<pre><code>using Dates
using Printf

function formatDuration(duration::Period, types::Vector{DataType}=[Hour, Minute, Second]; addUnit::Bool=false)
 periods = canonicalize(Dates.CompoundPeriod(duration)).periods

 missingTypes = Vector{DataType}(types)

 newPeriods = vcat(periods, map(t-&gt;t(0), missingTypes))
 sort!(newPeriods; rev=true)
 newPeriods1 = Vector{Period}()

 carryover = nothing
 for (i, p) in enumerate(newPeriods)
 typeofp = typeof(p)
 if !isnothing(carryover)
 newPeriod = convert(typeofp, floor(Millisecond(p) + Millisecond(carryover), typeofp(1)))
 carryover = nothing
 else
 newPeriod = p
 end
 if (typeof(newPeriod) in types)
 push!(newPeriods1, newPeriod)
 filter!(e-&gt;e≠typeofp,missingTypes)
 else
 carryover = newPeriod
 end
 end
 m = map(types) do t
 f = findfirst(x -&gt; typeof(x) == t, newPeriods1);
 r = isnothing(f) ? 0 : newPeriods1[f].value;
 @sprintf(&quot;%02d&quot;,r) * (addUnit ? lowercase(&quot;$t&quot;[1]) : &quot;&quot;)
 end
 join(m, &quot;:&quot;)
end
</code></pre>
Usage examples:
<pre><code>@show formatDuration(Millisecond(3600.125*1000))
# returns &quot;01:00:00&quot;
@show formatDuration(Day(2), [Hour, Minute, Second])
# returns &quot;48:00:00&quot;
@show formatDuration(Second(100000000), [Hour, Minute, Second])
# returns &quot;27777:46:40&quot;
@show formatDuration(Second(100000001), [Day, Hour, Minute, Second, Millisecond])
# returns &quot;1157:09:46:41:00&quot;
@show formatDuration(Millisecond(10000000001), 
 [Week, Day, Hour, Minute, Second, Millisecond]; addUnit=true)
#returns &quot;16w:03d:17h:46m:40s:01m&quot;
</code></pre>

I got some time intervals using the <code>tic()</code> and <code>toc()</code> functions which are in seconds. 
Let's suppose I have a time interval <code>dt=3600.125</code> seconds. How can I print it in "H:M:S.s" format using Julia?

How to print 3600.125 seconds in "H:M:S.s" format in Julia

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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文章&问答评论现已支持表情

我使用tic()和toc()函数获得了一些时间间隔，它们以秒为单位。假设我有一个时间间隔dt=3600.125秒。如何使用Julia打印"H:M:S.s“格式？

问如何以"H:M:S.s“格式以Julia格式打印3600.125秒
EN

回答 6

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问如何以"H:M:S.s“格式以Julia格式打印3600.125秒EN

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问如何以"H:M:S.s“格式以Julia格式打印3600.125秒
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