On 31/01/2015 11:18 a.m., Chris Williams wrote:
I'm attempting to print a human-readable version of a timestamp. The timestamp is coming from an external service, via JSON. An example is:1421865781342 Which I know to be: 2015-01-21T18:43:01.342Z The only method I see which takes an epoch-style timestamp, so that I can convert it to something printable, is the SysTime constructor: pure nothrow @safe this(long stdTime, immutable TimeZone tz = null); According to the reference, this seems to take the value in hnsecs. My expectation would be that this means multiplying my initial value by 1_000_000. But if I do that, I get a random date 2500 years in the future. I created this sample code: void main() { long time = 1421865781342L; writefln("%s", SysTime(time)); writefln("%s", SysTime(time * 10L)); writefln("%s", SysTime(time * 100L)); writefln("%s", SysTime(time * 1_000L)); writefln("%s", SysTime(time * 10_000L)); writefln("%s", SysTime(time * 100_000L)); writefln("%s", SysTime(time * 1_000_000L)); writefln("%s", Clock.currTime.stdTime); } Outputs: 0001-Jan-02 07:36:48.5781342 0001-Jan-17 03:04:47.781342 0001-Jun-14 05:44:39.81342 0005-Jul-04 08:23:20.1342 0046-Jan-21 10:50:03.342 0451-Jul-28 11:17:15.42 4506-Sep-18 16:42:14.2 635582516 My expectation would be that the final line would be something beginning with "14" at least. Playing around with possible multipliers, there doesn't even seem to be any integer value that would allow conversion between the timestamp I received and whatever SysTime expects. I'm using: DMD64 D Compiler v2.066.1 Ubuntu from .deb package Is this a bug, or am I doing something wrong?
On a slightly related note, I have code for UTC+0 to unix time stamp. https://github.com/Devisualization/util/blob/b9ab5758e755c4e33832ac4aed0a5d7f2c728faf/source/core/devisualization/util/core/time.d
