Here&#39;s one way with [`AddDate`][2]:

    time.Now().AddDate(0, 0, -1)

###EDIT 

The original answer also had a [`time.Add`][1] suggestion: 

    fmt.Printf(&quot;Yesterday: %v\n&quot;, time.Now().Add(-24*time.Hour))

See Vatine&#39;s comment for reasons to prefer `AddDate`.


  [1]: https://golang.org/pkg/time/#Time.Add
  [2]: https://golang.org/pkg/time/#Time.AddDate

I want to have **Liquibase** configured with my **Spring Boot** application, so I added dependencies to `pom.xml` and set the path to `master.xml` in `application.properties`. This works fine and **Spring Boot** runs **Liquibase** at startup. The problem is that now I want to run **Liquibase** manually, not at startup of application. Should I completely disable auto-configuration for **Liquibase** or can I use it and only disable running evaluations at startup?

Spring boot - disable Liquibase at startup

I use React 15.0.2 and React Router 2.4.0.
I want to pass multiple params to my route and I&#39;m not sure how to do it in the best way:

    &lt;Route name=&quot;User&quot; path=&quot;/user&quot; component={UserPage}&gt;	
		&lt;Route name=&quot;addTaskModal&quot; path=&quot;/user/manage:id&quot; component={ManageTaskPage} /&gt;
	&lt;/Route&gt;

And what is want is something like:

     &lt;Route name=&quot;User&quot; path=&quot;/user&quot; component={UserPage}&gt;	
		&lt;Route name=&quot;addTaskModal&quot; path=&quot;/user/manage:id:type&quot; component={ManageTaskPage} /&gt;
	&lt;/Route&gt;

Multiple params with React Router

How do I get yesterday&#39;s date in the `time.Time` struct in Go?

How to get yesterday&#39;s date in golang?

<p>How do I get yesterday's date in the <code>time.Time</code> struct in Go?</p>


I&#39;m trying to create a struct, and it is giving me an error, telling me the field is unknown.

The struct I am trying to initialize is: 

    package yelk

    type PhoneOptions struct {
        phone string
        cc    string
        lang  string
    }

And I&#39;m trying to initialize a `PhoneOptions` struct in `cli.go` like this:

	number := os.Args[1]
	phoneOptions := yelk.PhoneOptions{phone: number}

I do `go run cli.go 5555555555` but it gives me an error 

    ./cli.go:29: unknown yelk.PhoneOptions field &#39;phone&#39; in struct literal

All The StackOverflow posts I&#39;ve seen with this error seem to be from nested structs. I&#39;m wondering what I&#39;m doing wrong. `cli.go` will give this error if I just try to run `go build` on it, so I don&#39;t think it&#39;s the inputs I&#39;ve been running it with.

Any idea why this happens? 

unknown field in struct literal

I&#39;ve seen three ways of writing content to HTTP response:

    func Handler(w http.ResponseWriter, req *http.Request) {
        io.WriteString(w, &quot;blabla.\n&quot;)
    }

And:

    func Handler(w http.ResponseWriter, r *http.Request) {
    	w.Write([]byte(&quot;blabla\n&quot;))
    }

Also there&#39;s:

    fmt.Fprintf(w, &quot;blabla&quot;)

What&#39;s the difference between them? Which one is preferred to use?

What&#39;s the difference between ResponseWriter.Write and io.WriteString?

I am learning golang(beginner) and I have been searching on both google and stackoverflow but I could not find an answer so excuse me if already asked, but how can I mkdir if not exists in golang.

For example in node I would use fs-extra with the function [ensureDirSync] [1] (if blocking is of no concern of course)

    fs.ensureDir(&quot;./public&quot;);

  [1]: https://github.com/jprichardson/node-fs-extra#ensuredirdir-callback


mkdir if not exists using golang

The following for loop in Go isn&#39;t allowed,

    for i := 0, j := 1; i &lt; 10; i++, j++ {...}

What&#39;s the correct equivalent of the for-loop of two variables below?

    for (int i = 0, j = 1; i &lt; 10; i ++ , j ++) {...} 



For loop of two variables in Go

I am calling a function that returns an empty array if there are no values.

When I do this it doesn&#39;t work:

    if r == [] {
        fmt.Println(&quot;No return value&quot;)            
    }

The work around I&#39;m using is:

    var a [0]int
    if r == a {
        fmt.Println(&quot;No return value&quot;)            
    }

But declaring a variable just to check the return value doesn&#39;t seem right. What&#39;s the better way to do this?






How do I check for an empty slice?

I have a data frame like this: 

    print(df)
    
            0          1     2
    0   354.7      April   4.0
    1    55.4     August   8.0
    2   176.5   December  12.0
    3    95.5   February   2.0
    4    85.6    January   1.0
    5     152       July   7.0
    6   238.7       June   6.0
    7   104.8      March   3.0
    8   283.5        May   5.0
    9   278.8   November  11.0
    10  249.6    October  10.0
    11  212.7  September   9.0

As you can see, months are not in calendar order. So I created a second column to get the month number corresponding to each month (1-12). From there, how can I sort this data frame according to  calendar months&#39; order?

how to sort pandas dataframe from one column

My component has styles that depend on current datetime. In my component I&#39;ve got the following function.

      private fontColor( dto : Dto ) : string {
        // date d&#39;ex&#233;cution du dto
        let dtoDate : Date = new Date( dto.LastExecution );

		(...)

        let color =  &quot;hsl( &quot; + hue + &quot;, 80%, &quot; + (maxLigness - lightnessAmp) + &quot;%)&quot;;
    
        return color;
      }

`lightnessAmp` is calculated from the current datetime. The color changes if `dtoDate` is in the last 24 hours.

The exact error is the following:

&gt; Expression has changed after it was checked. Previous value: &#39;hsl( 123, 80%, 49%)&#39;. Current value: &#39;hsl( 123, 80%, 48%)&#39;

I know the exception appear in development mode only at the moment the value is checked. If the checked value is different of the updated value, the exception is thrown.

So I tried to update the current datetime at each lifecycle in the following hook method to prevent the exception:

      ngAfterViewChecked()
      {
        console.log( &quot;! changement de la date du composant !&quot; );
        this.dateNow = new Date();
      }

...but without success.

How to manage Angular2 &quot;expression has changed after it was checked&quot; exception when a component property depends on current datetime

I am taking the current time, in UTC, and putting it in nanaoseconds and then I need to take the nanoseconds and go back to a date in local time. I am able to do get the time to nanoseconds and then back to a date string but the time gets convoluted when I go from a string to date.


        //Date to milliseconds
         func currentTimeInMiliseconds() -&gt; Int! {
                let currentDate = NSDate()
                let dateFormatter = DateFormatter()
                dateFormatter.dateFormat = format
                dateFormatter.timeZone = NSTimeZone(name: &quot;UTC&quot;) as TimeZone!
                let date = dateFormatter.date(from: dateFormatter.string(from: currentDate as Date))
                let nowDouble = date!.timeIntervalSince1970
                return Int(nowDouble*1000)
            }
    
        //Milliseconds to date
        extension Int {
            func dateFromMilliseconds(format:String) -&gt; Date {
                let date : NSDate! = NSDate(timeIntervalSince1970:Double(self) / 1000.0)
                let dateFormatter = DateFormatter()
                dateFormatter.dateFormat = format
                dateFormatter.timeZone = TimeZone.current
                let timeStamp = dateFormatter.string(from: date as Date)
            
    let formatter = DateFormatter()
                formatter.dateFormat = format
                return ( formatter.date( from: timeStamp ) )!
            }
        }


//The timestamp is correct but the date returned isn&#39;t

Date to milliseconds and back to date in Swift

Very new to the &#39;Go&#39;. Question might be basic one.

I have two time.Time objects and I want to get the difference between the two in terms of hours/minutes/seconds. Lets say:

    t1 = 2016-09-09 19:09:16 +0530 IST
    t2 = 2016-09-09 19:09:16 +0530 IST

In above case, since the difference is 0. It should give me 00:00:00. Consider another case:

    t1 = 2016-09-14 14:12:48 +0530 IST
    t2 = 2016-09-14 14:18:29 +0530 IST

In this case, difference would be 00:05:41. I looked at the https://godoc.org/time but could not make anything out of it.

Difference between two time.Time objects

How do I add hours, minutes, and seconds (defined as ints) to the current time, similar to `AddDate`?

    timein := time.Now().Local().AddDate(Hours, Mins, Sec)

but with hours, minutes, and seconds.

Content Type	Original Author	Original Content on Stackoverflow
Question	saggaf.arsyad	View Question on Stackoverflow
Solution 1 - Go	cnicutar	View Answer on Stackoverflow

How to get yesterday's date in golang?

Go Problem Overview

Go Solutions

Solution 1 - Go

Multiple params with React Router

Spring boot - disable Liquibase at startup

Attributions