    TimeSpan.FromTicks(28000000000).TotalMinutes;

&gt;A single tick represents one hundred nanoseconds or one ten-millionth of a second. FROM MSDN.

So 28 000 000 000  * 1/10 000 000 = 2 800 sec.
2 800 sec /60 = 46.6666min

Or you can do it programmaticly with TimeSpan:

        static void Main()
        {
            TimeSpan ts = TimeSpan.FromTicks(28000000000);
            double minutesFromTs = ts.TotalMinutes;
            Console.WriteLine(minutesFromTs);
            Console.Read();
        }

Both give me 46 min and not 480 min...

You can do this way :

    TimeSpan duration = new TimeSpan(tickCount)
    double minutes = duration.TotalMinutes;



The clearest way in my view is to use [TimeSpan.FromTicks][1] and then convert that to minutes:

    TimeSpan ts = TimeSpan.FromTicks(ticks);
    double minutes = ts.TotalMinutes;


  [1]: http://msdn.microsoft.com/en-us/library/system.timespan.fromticks.aspx

there are 600 million ticks per minute. 
[ticksperminute][1]


  [1]: http://msdn.microsoft.com/en-us/library/system.timespan.ticksperminute.aspx

TimeSpan.FromTicks( 28000000000 ).TotalMinutes;

    DateTime mydate = new Date(2012,3,2,5,2,0);
    int minute = mydate/600000000;

will return minutes of from given date (mydate) to current time.hope this help.cheers

I have an application that resides in a single .py file.  I&#39;ve been able to get pyInstaller to bundle it successfully into an EXE for Windows.  The problem is, the application requires a .cfg file that always sits directly beside the application in the same directory.

Normally, I build the path using the following code:

    import os
    config_name = &#39;myapp.cfg&#39;
    config_path = os.path.join(sys.path[0], config_name)

However, it seems the sys.path is blank when its called from an EXE generated by pyInstaller.  This same behaviour occurs when you run the python interactive command line and try to fetch sys.path[0].

Is there a more concrete way of getting the path of the currently running application so that I can find files that are relative to it?

Determining application path in a Python EXE generated by pyInstaller

In Python, the where and when of using string concatenation versus string substitution eludes me. As the string concatenation has seen large boosts in performance, is this (becoming more) a stylistic decision rather than a practical one?

For a concrete example, how should one handle construction of flexible URIs:

    DOMAIN = &#39;http://stackoverflow.com&#39;
    QUESTIONS = &#39;/questions&#39;

    def so_question_uri_sub(q_num):
        return &quot;%s%s/%d&quot; % (DOMAIN, QUESTIONS, q_num)

    def so_question_uri_cat(q_num):
        return DOMAIN + QUESTIONS + &#39;/&#39; + str(q_num)

Edit: There have also been suggestions about joining a list of strings and for using named substitution. These are variants on the central theme, which is, which way is the Right Way to do it at which time? Thanks for the responses!

String concatenation vs. string substitution in Python

I have a ticks value of 28000000000 which should be 480 minutes but how can I be sure? How do I convert a ticks value to minutes?

How do I convert ticks to minutes?

<p>I have a ticks value of 28000000000 which should be 480 minutes but how can I be sure? How do I convert a ticks value to minutes?</p>


My MS Visual C# program was compiling and running just fine.
I close MS Visual C# to go off and do other things in life.

I reopen it and (before doing anything else) go to &quot;Publish&quot; my program and get the following error message:

&gt; Program C:\myprogram.exe does not contain a static &#39;Main&#39; method suitable for an entry point

Huh?  Yes it does... and it was all working 15 min earlier.  Sure, I can believe that I accidentally hit something or done something before I closed it up... but what?  How do I troubleshoot this?  

My Program.cs file looks like this:

    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Windows.Forms;
    using System.Threading;
    
    namespace SimpleAIMLEditor
    {
        static class Program
        {
            [STAThread]
            static void Main()
            {
                Application.EnableVisualStyles();
                Application.SetCompatibleTextRenderingDefault(false);
    
                Application.Run(new mainSAEForm());
            }
        }
    }

...and there are some comments in there.    There are no other errors.

Help?

Troubleshooting &quot;program does not contain a static &#39;Main&#39; method&quot; when it clearly does...?

I&#39;m always surprised that even after using C# for all this time now, I still manage to find things I didn&#39;t know about...

I&#39;ve tried searching the internet for this, but using the &quot;~&quot; in a search isn&#39;t working for me so well and I didn&#39;t find anything on MSDN either (not to say it isn&#39;t there)

I saw this snippet of code recently, what does the tilde(~) mean?

    /// &lt;summary&gt;
    /// Enumerates the ways a customer may purchase goods.
    /// &lt;/summary&gt;
    [Flags]
    public enum PurchaseMethod
    {	
        All = ~0,
        None =  0,
        Cash =  1,
        Check =  2,
        CreditCard =  4
    }

I was a little surprised to see it so I tried to compile it, and it worked... but I still don&#39;t know what it means/does. Any help??

What is the tilde (~) in the enum definition?

According to FXCop, List&lt;T&gt; should not be exposed in an API object model.  Why is this considered bad practice?

Why is it considered bad to expose List&lt;T&gt;?

I&#39;m creating a function where I need to pass an object so that it can be modified by the function. What is the difference between:

    public void myFunction(ref MyClass someClass)

and

    public void myFunction(out MyClass someClass)

Which should I use and why?

What&#39;s the difference between the &#39;ref&#39; and &#39;out&#39; keywords?

I&#39;m trying to use the `Html.DropDownList` extension method but can&#39;t figure out how to use it with an enumeration.

Let&#39;s say I have an enumeration like this:

    public enum ItemTypes
    {
        Movie = 1,
        Game = 2,
        Book = 3
    }

How do I go about creating a dropdown with these values using the `Html.DropDownList` extension method?

Or is my best bet to simply create a for loop and create the Html elements manually?

How do you create a dropdownlist from an enum in ASP.NET MVC?

Would you recommend using a [datetime][1] or a [timestamp][1] field, and why (using MySQL)? 

I&#39;m working with PHP on the server side.


  [1]: https://dev.mysql.com/doc/refman/5.0/en/datetime.html

Should I use the datetime or timestamp data type in MySQL?

SQLAlchemy&#39;s `DateTime` type allows for a `timezone=True` argument to save a non-naive datetime object to the database, and to return it as such. Is there any way to modify the timezone of the `tzinfo` that SQLAlchemy passes in so it could be, for instance, UTC? I realize that I could just use `default=datetime.datetime.utcnow`; however, this is a naive time that would happily accept someone passing in a naive localtime-based datetime, even if I used `timezone=True` with it, because it makes local or UTC time non-naive without having a base timezone to normalize it with. I have tried (using [pytz][1]) to make the datetime object non-naive, but when I save this to the DB it comes back as naive.

Note how datetime.datetime.utcnow does not work with `timezone=True` so well:

    import sqlalchemy as sa
    from sqlalchemy.sql import select
    import datetime

    metadata = sa.MetaData(&#39;postgres://user:pass@machine/db&#39;)

    data_table = sa.Table(&#39;data&#39;, metadata,
        sa.Column(&#39;id&#39;,   sa.types.Integer, primary_key=True),
        sa.Column(&#39;date&#39;, sa.types.DateTime(timezone=True), default=datetime.datetime.utcnow)
    )

    metadata.create_all()

    engine = metadata.bind
    conn = engine.connect()
    result = conn.execute(data_table.insert().values(id=1))

    s = select([data_table])
    result = conn.execute(s)
    row = result.fetchone()
&gt; (1, datetime.datetime(2009, 1, 6, 0, 9, 36, 891887))

    row[1].utcoffset()
&gt; datetime.timedelta(-1, 64800) # that&#39;s my localtime offset!!

    datetime.datetime.now(tz=pytz.timezone(&quot;US/Central&quot;))
&gt; datetime.timedelta(-1, 64800)

    datetime.datetime.now(tz=pytz.timezone(&quot;UTC&quot;))
&gt; datetime.timedelta(0) #UTC

Even if I change it to explicitly use UTC:

...
    
    data_table = sa.Table(&#39;data&#39;, metadata,
        sa.Column(&#39;id&#39;,   sa.types.Integer, primary_key=True),
        sa.Column(&#39;date&#39;, sa.types.DateTime(timezone=True), default=datetime.datetime.now(tz=pytz.timezone(&#39;UTC&#39;)))
    )

    row[1].utcoffset()
...
&gt; datetime.timedelta(-1, 64800) # it did not use the timezone I explicitly added

Or if I drop the `timezone=True`:

...

    data_table = sa.Table(&#39;data&#39;, metadata,
        sa.Column(&#39;id&#39;,   sa.types.Integer, primary_key=True),
        sa.Column(&#39;date&#39;, sa.types.DateTime(), default=datetime.datetime.now(tz=pytz.timezone(&#39;UTC&#39;)))
    )
    
    row[1].utcoffset() is None
...
&gt; True # it didn&#39;t even save a timezone to the db this time

  [1]: http://pytz.sourceforge.net/

SQLAlchemy DateTime timezone

How do I get the current time?

Regardless of what the user&#39;s local time zone is set to, using C# (.NET 2.0) I need to determine the time (DateTime object) in the Eastern time zone.

I know about these methods but there doesn&#39;t seem to be an obvious way to get a DateTime object for a different time zone than what the user is in.

     DateTime.Now
     DateTime.UtcNow
     TimeZone.CurrentTimeZone

Of course, the solution needs to be daylight savings time aware.



Get DateTime For Another Time Zone Regardless of Local Time Zone

I have a Python [`datetime.datetime`][1] object. What is the best way to subtract one day?


  [1]: https://docs.python.org/library/datetime.html#datetime-objects

How to subtract a day from a date?

I am trying to serialize a .NET `TimeSpan` object to XML and it is not working. A quick google has suggested that while `TimeSpan` is serializable, the `XmlCustomFormatter` does not provide methods to convert `TimeSpan` objects to and from XML.

One suggested approach was to ignore the `TimeSpan` for serialization, and instead serialize the result of `TimeSpan.Ticks` (and use `new TimeSpan(ticks)` for deserialization). An example of this follows:

    [Serializable]
    public class MyClass
    {
        // Local Variable
        private TimeSpan m_TimeSinceLastEvent;

        // Public Property - XmlIgnore as it doesn&#39;t serialize anyway
        [XmlIgnore]
        public TimeSpan TimeSinceLastEvent
        {
            get { return m_TimeSinceLastEvent; }
            set { m_TimeSinceLastEvent = value; }
        }

        // Pretend property for serialization
        [XmlElement(&quot;TimeSinceLastEvent&quot;)]
        public long TimeSinceLastEventTicks
        {
            get { return m_TimeSinceLastEvent.Ticks; }
            set { m_TimeSinceLastEvent = new TimeSpan(value); }
        }
    }

While this appears to work in my brief testing - is this the best way to achieve this?

Is there a better way to serialize a TimeSpan to and from XML?

How to serialize a TimeSpan to XML

I have two DateTime vars, beginTime and endTime. I have gotten the difference of them by doing the following:

    TimeSpan dateDifference = endTime.Subtract(beginTime);

How can I now return a string of this in hh hrs, mm mins, ss secs format using C#.

If the difference was 00:06:32.4458750

It should return this 00 hrs, 06 mins, 32 secs

  [1]: https://stackoverflow.com/questions/840120/timespan-formatting

How do I convert a TimeSpan to a formatted string?

How long is a .NET DateTime/TimeSpan tick?

Using .NET 3.5

I want to determine if the current time falls in a time range.

So far I have the currentime:

    DateTime currentTime = new DateTime();
    currentTime.TimeOfDay;

I&#39;m blanking out on how to get the time range converted and compared.
Would this work?

    if (Convert.ToDateTime(&quot;11:59&quot;) &lt;= currentTime.TimeOfDay 
        &amp;&amp; Convert.ToDateTime(&quot;13:01&quot;) &gt;= currentTime.TimeOfDay)
    {
       //match found
    }
                

UPDATE1: Thanks everyone for your suggestions.  I wasn&#39;t familiar with the TimeSpan function.

Find if current time falls in a time range

In C#/.NET `TimeSpan` has `TotalDays`, `TotalMinutes`, etc. but I can&#39;t figure out a formula for total months difference. Variable days per month and leap years keep throwing me off. How can I get **TotalMonths**?

**Edit** Sorry for not being more clear: I know I can&#39;t actually get this from `TimeSpan` but I thought using `TotalDays` and `TotalMinutes` would be a good example to express what I was looking for ... except I&#39;m trying to get Total Months.

Example: Dec 25, 2009 - Oct 6, 2009 = 2 TotalMonths. Oct 6th to Nov 5th equals 0 months. On Nov 6th, 1 month. On Dec 6th, 2 months

Content Type	Original Author	Original Content on Stackoverflow
Question	Ben H	View Question on Stackoverflow
Solution 1 - C#	Patrik Hägne	View Answer on Stackoverflow
Solution 2 - C#	Patrick Desjardins	View Answer on Stackoverflow
Solution 3 - C#	thinkbeforecoding	View Answer on Stackoverflow
Solution 4 - C#	Jon Skeet	View Answer on Stackoverflow
Solution 5 - C#	Blounty	View Answer on Stackoverflow
Solution 6 - C#	Mike Scott	View Answer on Stackoverflow
Solution 7 - C#	zaheer ahmad	View Answer on Stackoverflow

How do I convert ticks to minutes?

C# Problem Overview

C# Solutions

Solution 1 - C#

Solution 2 - C#

Solution 3 - C#

Solution 4 - C#

Solution 5 - C#

Solution 6 - C#

Solution 7 - C#

String concatenation vs. string substitution in Python

Determining application path in a Python EXE generated by pyInstaller

Attributions