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To measure the time some code has taken, you either use time or clock. The time command will run its script argument and return a description of how long the script took, in milliseconds (plus some descriptive text, which is trivial to chop off with lindex).
If you're really doing performance analysis work, you can supply an optional count argument that makes the script be run repeatedly, but for just general monitoring you can ignore that. The clock command lets you get various sorts of timestamps (as well as doing formatting, parsing and arithmetic with times). The coarsest is got with clock seconds, which returns the amount of time since the beginning of the Unix epoch (in seconds computed with civil time; that's what you want unless you're doing something specialized). 
If you need more detail, you should use clock milliseconds or clock microseconds. There's also clock clicks, but it's not typically defined what unit that's counting in (unless you pass the -milliseconds or -microseconds option).
See Years, months, days, etc. Between two dates for a partial solution. Then it is trivial to work out the time difference between them. The above code deals with standard Tcl date range, but provides Julian to calendar date conversions. Board index » tcl. All times are UTC. I wish to know the difference between the two, in seconds, hours, days. (calculate time span) seems like the basis for.
It's up to you to turn the timestamps into something useful to you. If you're timing things on Tcl 8.4 (or before!) then you're constrained to using time, clock seconds or clock clicks (and even the -microseconds option is absent; there's no microsecond-resolution timer exposed in 8.4). In that case, you should consider upgrading to 8.5, as it's generally faster. Faster is Good!
(If you're using pre-8.4, definitely upgrade as you're enormously behind on the support front.).
In a I went on and on about how you can calculate hours between two different dates and times, but Excel does this for you automatically. I’ll use reader comment as my example.
A- 10:00 B- 17:00 Please help me to find B-A in hh:mm For clarity I will assume that the date format is m/d/yyyy, which is what I use here in the US. For the A value type in 2/2/2011 10:00 and for the B value type in 5/2/2011 17:00 then in another cell subtract A from B. In the (B-A) cell enter the custom time format [h]:mm to show the result in hh:mm format. To enter the custom time format: • Open the Format Cells dialog box (CTRL+1) • Select the Number tab • Click Custom • In the Type box enter [h]:mm • Click OK When you surround the h with a square bracket [] Excel will show hours as elapsed time. Without the square brackets the hours will only show values 0-23.
Should you want to include seconds, the custom time format would be [h]:mm:ss. To illustrate this I’ll change the B value to 5/2/2011 17:15:44 and the resulting formula will show 2143:15:44.
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To measure the time some code has taken, you either use time or clock. The time command will run its script argument and return a description of how long the script took, in milliseconds (plus some descriptive text, which is trivial to chop off with lindex).
If you\'re really doing performance analysis work, you can supply an optional count argument that makes the script be run repeatedly, but for just general monitoring you can ignore that. The clock command lets you get various sorts of timestamps (as well as doing formatting, parsing and arithmetic with times). The coarsest is got with clock seconds, which returns the amount of time since the beginning of the Unix epoch (in seconds computed with civil time; that\'s what you want unless you\'re doing something specialized).
If you need more detail, you should use clock milliseconds or clock microseconds. There\'s also clock clicks, but it\'s not typically defined what unit that\'s counting in (unless you pass the -milliseconds or -microseconds option).
See Years, months, days, etc. Between two dates for a partial solution. Then it is trivial to work out the time difference between them. The above code deals with standard Tcl date range, but provides Julian to calendar date conversions. Board index » tcl. All times are UTC. I wish to know the difference between the two, in seconds, hours, days. (calculate time span) seems like the basis for.
It\'s up to you to turn the timestamps into something useful to you. If you\'re timing things on Tcl 8.4 (or before!) then you\'re constrained to using time, clock seconds or clock clicks (and even the -microseconds option is absent; there\'s no microsecond-resolution timer exposed in 8.4). In that case, you should consider upgrading to 8.5, as it\'s generally faster. Faster is Good!
(If you\'re using pre-8.4, definitely upgrade as you\'re enormously behind on the support front.).
In a I went on and on about how you can calculate hours between two different dates and times, but Excel does this for you automatically. I’ll use reader comment as my example.
A- 10:00 B- 17:00 Please help me to find B-A in hh:mm For clarity I will assume that the date format is m/d/yyyy, which is what I use here in the US. For the A value type in 2/2/2011 10:00 and for the B value type in 5/2/2011 17:00 then in another cell subtract A from B. In the (B-A) cell enter the custom time format [h]:mm to show the result in hh:mm format. To enter the custom time format: • Open the Format Cells dialog box (CTRL+1) • Select the Number tab • Click Custom • In the Type box enter [h]:mm • Click OK When you surround the h with a square bracket [] Excel will show hours as elapsed time. Without the square brackets the hours will only show values 0-23.
Should you want to include seconds, the custom time format would be [h]:mm:ss. To illustrate this I’ll change the B value to 5/2/2011 17:15:44 and the resulting formula will show 2143:15:44.
...'>Tcl Program To Calculate The Time Difference Between Two Times(07.01.2019)To measure the time some code has taken, you either use time or clock. The time command will run its script argument and return a description of how long the script took, in milliseconds (plus some descriptive text, which is trivial to chop off with lindex).
If you\'re really doing performance analysis work, you can supply an optional count argument that makes the script be run repeatedly, but for just general monitoring you can ignore that. The clock command lets you get various sorts of timestamps (as well as doing formatting, parsing and arithmetic with times). The coarsest is got with clock seconds, which returns the amount of time since the beginning of the Unix epoch (in seconds computed with civil time; that\'s what you want unless you\'re doing something specialized).
If you need more detail, you should use clock milliseconds or clock microseconds. There\'s also clock clicks, but it\'s not typically defined what unit that\'s counting in (unless you pass the -milliseconds or -microseconds option).See Years, months, days, etc. Between two dates for a partial solution. Then it is trivial to work out the time difference between them. The above code deals with standard Tcl date range, but provides Julian to calendar date conversions. Board index » tcl. All times are UTC. I wish to know the difference between the two, in seconds, hours, days. (calculate time span) seems like the basis for.
It\'s up to you to turn the timestamps into something useful to you. If you\'re timing things on Tcl 8.4 (or before!) then you\'re constrained to using time, clock seconds or clock clicks (and even the -microseconds option is absent; there\'s no microsecond-resolution timer exposed in 8.4). In that case, you should consider upgrading to 8.5, as it\'s generally faster. Faster is Good!
(If you\'re using pre-8.4, definitely upgrade as you\'re enormously behind on the support front.).
In a I went on and on about how you can calculate hours between two different dates and times, but Excel does this for you automatically. I’ll use reader comment as my example.
A- 10:00 B- 17:00 Please help me to find B-A in hh:mm For clarity I will assume that the date format is m/d/yyyy, which is what I use here in the US. For the A value type in 2/2/2011 10:00 and for the B value type in 5/2/2011 17:00 then in another cell subtract A from B. In the (B-A) cell enter the custom time format [h]:mm to show the result in hh:mm format. To enter the custom time format: • Open the Format Cells dialog box (CTRL+1) • Select the Number tab • Click Custom • In the Type box enter [h]:mm • Click OK When you surround the h with a square bracket [] Excel will show hours as elapsed time. Without the square brackets the hours will only show values 0-23.
Should you want to include seconds, the custom time format would be [h]:mm:ss. To illustrate this I’ll change the B value to 5/2/2011 17:15:44 and the resulting formula will show 2143:15:44.
...'>Tcl Program To Calculate The Time Difference Between Two Times(07.01.2019)