Getting a timestamp

ruby-talk
1

Hi,

I would like to get a timestamp from a Date object. What is the best
aproach for this?

thank you

2

jp wrote:

Hi,

I would like to get a timestamp from a Date object. What is the best
aproach for this?

thank you

I think you want a DateTime or Time object, I believe a Date object only represents a date, not a date and time unless perhaps 'date at midnight' counts.

3

I'm not sure if this is the most effective, but

d = Date.new(2009, 11, 18)
ts = d.strftime('%s').to_i

seems to work for me, giving the timestamp for 2009-11-10 00:00:00 GMT

Hope this helps,

Mike

···

On Nov 18, 2009, at 10:10 PM, jp wrote:

Hi,

I would like to get a timestamp from a Date object. What is the best
aproach for this?

thank you

--

Mike Stok <mike@stok.ca>
http://www.stok.ca/~mike/

The "`Stok' disclaimers" apply.

4

Don't know if this is what you're looking for but whenever I need a
serial-style timestamp (like for a filename). I just do this:

Time.now.strftime("%Y%m%d%H%M%S")

···

On Thu, Nov 19, 2009 at 2:19 PM, Reid Thompson <reid.thompson@ateb.com>wrote:

jp wrote:

Hi,

I would like to get a timestamp from a Date object. What is the best
aproach for this?

thank you

I think you want a DateTime or Time object, I believe a Date object only

represents a date, not a date and time unless perhaps 'date at midnight'
counts.

5

Hi,

It's enough to have the milliseconds since a given date in the past,
for example java has this:
http://java.sun.com/j2se/1.5.0/docs/api/java/util/Date.html#getTime\(\)

It's there anything comparable in Ruby?

Thanks

···

On 19 Nov, 03:31, Sven Schott <sven.sch...@gmail.com> wrote:

[Note: parts of this message were removed to make it a legal post.]

Don't know if this is what you're looking for but whenever I need a
serial-style timestamp (like for a filename). I just do this:

Time.now.strftime("%Y%m%d%H%M%S")

On Thu, Nov 19, 2009 at 2:19 PM, Reid Thompson <reid.thomp...@ateb.com>wrote:

> jp wrote:

>> Hi,

>> I would like to get a timestamp from a Date object. What is the best
>> aproach for this?

>> thank you

>> I think you want a DateTime or Time object, I believe a Date object only
> represents a date, not a date and time unless perhaps 'date at midnight'
> counts.

6

jp wrote:

···

On 19 Nov, 03:31, Sven Schott <sven.sch...@gmail.com> wrote:

[Note: parts of this message were removed to make it a legal post.]

Don't know if this is what you're looking for but whenever I need a
serial-style timestamp (like for a filename). I just do this:

Time.now.strftime("%Y%m%d%H%M%S")

On Thu, Nov 19, 2009 at 2:19 PM, Reid Thompson <reid.thomp...@ateb.com>wrote:

jp wrote:

Hi,
I would like to get a timestamp from a Date object. What is the best
aproach for this?
thank you
I think you want a DateTime or Time object, I believe a Date object only

represents a date, not a date and time unless perhaps 'date at midnight'
counts.

Hi,

It's enough to have the milliseconds since a given date in the past,
for example java has this:
http://java.sun.com/j2se/1.5.0/docs/api/java/util/Date.html#getTime\(\)

It's there anything comparable in Ruby?

Thanks

maybe...

7

Hint: there is documentation...

irb(main):001:0> Time.now.to_i
=> 1258647502
irb(main):002:0> Time.at(0)
=> 1970-01-01 01:00:00 +0100
irb(main):003:0> Time.at(0).to_i
=> 0

Cheers

robert

···

2009/11/19 jp <jonhy.pear@gmail.com>:

On 19 Nov, 03:31, Sven Schott <sven.sch...@gmail.com> wrote:

[Note: parts of this message were removed to make it a legal post.]

Don't know if this is what you're looking for but whenever I need a
serial-style timestamp (like for a filename). I just do this:

Time.now.strftime("%Y%m%d%H%M%S")

On Thu, Nov 19, 2009 at 2:19 PM, Reid Thompson <reid.thomp...@ateb.com>wrote:

> jp wrote:

>> Hi,

>> I would like to get a timestamp from a Date object. What is the best
>> aproach for this?

>> thank you

>> I think you want a DateTime or Time object, I believe a Date object only
> represents a date, not a date and time unless perhaps 'date at midnight'
> counts.

Hi,

It's enough to have the milliseconds since a given date in the past,
for example java has this:
http://java.sun.com/j2se/1.5.0/docs/api/java/util/Date.html#getTime\(\)

It's there anything comparable in Ruby?

--
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/

8

PS: I forgot

irb(main):007:0> t=Time.now
=> 2009-11-19 17:20:25 +0100
irb(main):008:0> t.to_i
=> 1258647625
irb(main):009:0> t.to_f
=> 1258647625.44141
irb(main):010:0> t.usec
=> 441411

Cheers

robert

···

2009/11/19 Robert Klemme <shortcutter@googlemail.com>:

2009/11/19 jp <jonhy.pear@gmail.com>:

On 19 Nov, 03:31, Sven Schott <sven.sch...@gmail.com> wrote:

[Note: parts of this message were removed to make it a legal post.]

Don't know if this is what you're looking for but whenever I need a
serial-style timestamp (like for a filename). I just do this:

Time.now.strftime("%Y%m%d%H%M%S")

On Thu, Nov 19, 2009 at 2:19 PM, Reid Thompson <reid.thomp...@ateb.com>wrote:

> jp wrote:

>> Hi,

>> I would like to get a timestamp from a Date object. What is the best
>> aproach for this?

>> thank you

>> I think you want a DateTime or Time object, I believe a Date object only
> represents a date, not a date and time unless perhaps 'date at midnight'
> counts.

Hi,

It's enough to have the milliseconds since a given date in the past,
for example java has this:
Date (Java 2 Platform SE 5.0)

It's there anything comparable in Ruby?

Hint: there is documentation...

irb(main):001:0> Time.now.to_i
=> 1258647502
irb(main):002:0> Time.at(0)
=> 1970-01-01 01:00:00 +0100
irb(main):003:0> Time.at(0).to_i
=> 0

--
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/