SyntaxFix.com - Programming Questions & Answers Hub For Beginners

In case you need additional information on the distribution of your list, the percentile method will probably be useful. And a median value corresponds to the 50th percentile of a list:

import numpy as np
a = np.array([1,2,3,4,5,6,7,8,9])
median_value = np.percentile(a, 50) # return 50th percentile
print median_value 

Swift 3 version:

type(of: yourObject)

While former answer is absolutely correct, I prefer using the JOIN ON syntax to be sure that I know how do I join and on what fields. It would look something like this:

SELECT bc.firstname, bc.lastname, b.title, TO_CHAR(bo.orderdate, 'MM/DD/YYYY') "Order         Date", p.publishername
FROM books b
JOIN book_customer bc ON bc.costumer_id = b.book_id
LEFT JOIN book_order bo ON bo.book_id = b.book_id
(etc.)
WHERE b.publishername = 'PRINTING IS US';

This syntax seperates completely the WHERE clause from the JOIN clause, making the statement more readable and easier for you to debug.

Complete working example in Kotlin, I have replaced my API keys with 1111...

        val apiService = API.getInstance().retrofit.create(MyApiEndpointInterface::class.java)
        val params = HashMap<String, String>()
        params["q"] =  "munich,de"
        params["APPID"] = "11111111111111111"

        val call = apiService.getWeather(params)

        call.enqueue(object : Callback<WeatherResponse> {
            override fun onFailure(call: Call<WeatherResponse>?, t: Throwable?) {
                Log.e("Error:::","Error "+t!!.message)
            }

            override fun onResponse(call: Call<WeatherResponse>?, response: Response<WeatherResponse>?) {
                if (response != null && response.isSuccessful && response.body() != null) {
                    Log.e("SUCCESS:::","Response "+ response.body()!!.main.temp)

                    temperature.setText(""+ response.body()!!.main.temp)

                }
            }

        })

Very old question but providing some additional information which may help someone else. I also encountered same error and I was using ojdbc14.jar with 12.1.0.2 Oracle Database. On Oracle official web page this information is listed that which version supports which database drivers. Here is the link and it appears that with Oracle 12c and Java 7 or 8 the correct version is ojdbc7.jar.

In the ojdbc6.jar is for 11.2.0.4.

You can use below code :

var vc = self.storyboard?.instantiateViewControllerWithIdentifier("YourViewController") as! YourViewController;
            vc.mode_Player = 1
            self.presentViewController(vc, animated: true, completion: nil)

In swift 4.0

Create a delegate on class that need to send some data or provide some functionality to other classes

Like

protocol GetGameStatus {
    var score: score { get }
    func getPlayerDetails()
}

After that in the class that going to confirm to this delegate

class SnakesAndLadders: GetGameStatus {
    func getPlayerDetails() {

 }
}

Windows -> references ->Android->lint error checking.

un tick Run full error.......

In the function example, (read|write)DocumentsFromFile(...) having some function wrappers certainly seems to makes sense since everything in OSx and iOS seems to need three or four major classes instantiated and a bunch of properties, configured, linked, instantiated, and set, just to write "Hi" to a file, in 182 countries.

However, these examples aren't complete enough to use in a real program. The write function does not report any errors creating or writing to the file. On the read, I don't think it's a good idea to return an error that the file doesn't exist as the string that is supposed to contain the data that was read. You would want to know that it failed and why, through some notification mechanism, like an exception. Then, you can write some code that outputs what the problem is and allows the user to correct it, or "correctly" breaks the program at that point.

You would not want to just return a string with an "Error file does not exist" in it. Then, you would have to look for the error in the string from calling function each time and handle it there. You also possibly couldn't really tell if the error string was actually read from an actual file, or if it was produced from your code.

You can't even call the read like this in swift 2.2 and Xcode 7.3 because NSString(contentsOfFile...) throws an exception. It is a compile time error if you do not have any code to catch it and do something with it, like print it to stdout, or better, an error popup window, or stderr. I have heard that Apple is moving away from try catch and exceptions, but it's going to be a long move and it's not possible to write code without this. I don't know where the &error argument comes from, perhaps an older version, but NSString.writeTo[File|URL] does not currently have an NSError argument. They are defined like this in NSString.h :

public func writeToURL(url: NSURL, atomically useAuxiliaryFile: Bool, encoding enc: UInt) throws
public func writeToFile(path: String, atomically useAuxiliaryFile: Bool, encoding enc: UInt) throws
public convenience init(contentsOfURL url: NSURL, encoding enc: UInt) throws
public convenience init(contentsOfFile path: String, encoding enc: UInt) throws

Also, the file not existing is just one of a number of potential problems your program might have reading a file, such as a permissions problem, the file size, or numerous other issues that you would not even want to try to code a handler for each one of them. It's best to just assume it's all correct and catch and print, or handle, an exception if something goes amiss, besides, at this point, you don't really have a choice anyway.

Here are my rewrites :

func writeToDocumentsFile(fileName:String,value:String) {

    let documentsPath = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0] as NSString!
    let path = documentsPath.stringByAppendingPathComponent(fileName)

    do {
        try value.writeToFile(path, atomically: true, encoding: NSUTF8StringEncoding)
    } catch let error as NSError {
        print("ERROR : writing to file \(path) : \(error.localizedDescription)")
    }

}

func readFromDocumentsFile(fileName:String) -> String {

    let documentsPath = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0] as NSString
    let path = documentsPath.stringByAppendingPathComponent(fileName)

    var readText : String = ""

    do {
        try readText = NSString(contentsOfFile: path, encoding: NSUTF8StringEncoding) as String
    }
    catch let error as NSError {
        print("ERROR : reading from file \(fileName) : \(error.localizedDescription)")
    }
    return readText
}

I got the same error when xampp was installed on windows 10.

www.example.com:443:0 server certificate does NOT include an ID which matches the server name

So I opened httpd-ssl.conf file in xampp folder and changed the following line

ServerName www.example.com:443

To

ServerName localhost

And the problem was fixed.

DSO here means Dynamic Shared Object; since the error message says it's missing from the command line, I guess you have to add it to the command line.

That is, try adding -lpthread to your command line.

In Swift the isEmpty function it will check if the string is empty.

 if username.isEmpty || password.isEmpty {
      println("Sign in failed. Empty character")
 }

This is so simple:

Create a drawable file with a gradient like this:

for shadow below a view below_shadow.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">   
<gradient
    android:startColor="#20000000"
    android:endColor="@android:color/transparent"
    android:angle="270" >
</gradient>
</shape>

for shadow above a view above_shadow.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">   
<gradient
    android:startColor="#20000000"
    android:endColor="@android:color/transparent"
    android:angle="90" >
</gradient>
</shape>

and so on for right and left shadow just change the angle of the gradient :)

you can try to download packages from mod

go get -v all

It's worth reading Oracle Java Tutorial - Getting and Setting Field Values

Field#set(Object object, Object value) sets the field represented by this Field object on the specified object argument to the specified new value.

It should be like this

f.set(objectOfTheClass, new ConcurrentHashMap<>());

You can't set any value in null Object If tried then it will result in NullPointerException

Note: Setting a field's value via reflection has a certain amount of performance overhead because various operations must occur such as validating access permissions. From the runtime's point of view, the effects are the same, and the operation is as atomic as if the value was changed in the class code directly.

Allows Negative Indices

Its always useful not always having to write string[string.length - 1] to get the last character when using a subscript extension. This (Swift 3) extension allows for negative indices, Range and CountableClosedRange.

extension String {
    var count: Int { return self.characters.count }

    subscript (i: Int) -> Character {
        // wraps out of bounds indices
        let j = i % self.count
        // wraps negative indices
        let x = j < 0 ? j + self.count : j

        // quick exit for first
        guard x != 0 else {
            return self.characters.first!
        }

        // quick exit for last
        guard x != count - 1 else {
            return self.characters.last!
        }

        return self[self.index(self.startIndex, offsetBy: x)]
    }

    subscript (r: Range<Int>) -> String {
        let lb = r.lowerBound
        let ub = r.upperBound

        // quick exit for one character
        guard lb != ub else { return String(self[lb]) }

        return self[self.index(self.startIndex, offsetBy: lb)..<self.index(self.startIndex, offsetBy: ub)]
    }

    subscript (r: CountableClosedRange<Int>) -> String {
        return self[r.lowerBound..<r.upperBound + 1]
    }
}

How you can use it:

var text = "Hello World"

text[-1]    // d
text[2]     // l
text[12]    // e
text[0...4] // Hello
text[0..<4] // Hell

For the more thorough Programmer: Include a guard against empty Strings in this extension

subscript (i: Int) -> Character {
    guard self.count != 0 else { return '' }
    ...
}

subscript (r: Range<Int>) -> String {
    guard self.count != 0 else { return "" }
    ...
}

An example might help a little here. If I have an instance model of class Model with attributes name and state I can observe those attributes with:

let options = NSKeyValueObservingOptions([.New, .Old, .Initial, .Prior])

model.addObserver(self, forKeyPath: "name", options: options, context: nil)
model.addObserver(self, forKeyPath: "state", options: options, context: nil)

Changes to these properties will trigger a call to:

override func observeValueForKeyPath(keyPath: String!,
    ofObject object: AnyObject!,
    change: NSDictionary!,
    context: CMutableVoidPointer) {

        println("CHANGE OBSERVED: \(change)")
}

for swift4:

if obj is MyClass{
    // then object type is MyClass Type
}

Here's a code snippet to split a string by n characters separated over lines:

//: A UIKit based Playground for presenting user interface

import UIKit
import PlaygroundSupport

class MyViewController : UIViewController {
    override func loadView() {

        let str = String(charsPerLine: 5, "Hello World!")
        print(str) // "Hello\n Worl\nd!\n"

    }
}

extension String {

    init(charsPerLine:Int, _ str:String){

        self = ""
        var idx = 0
        for char in str {
            self += "\(char)"
            idx = idx + 1
            if idx == charsPerLine {
                self += "\n"
                idx = 0
            }
        }

    }
}

In, Swift 3.0 you have set date object for this way.

extension Date
{
    init(dateString:String) {
        let dateStringFormatter = DateFormatter()
        dateStringFormatter.dateFormat = "yyyy-MM-dd"
        dateStringFormatter.locale = Locale(identifier: "en_US_POSIX")
        let d = dateStringFormatter.date(from: dateString)!
        self(timeInterval:0, since:d)
    }
}

It is time inefficient to compare each number, needlessly leading to a linear complexity. Having said that, this approach avoids any inequality checks:

import itertools

m, n = 5, 10
for i in itertools.chain(range(m), range(m + 1, n)):
    print(i)  # skips m = 5

As an aside, you woudn't want to use (*range(m), *range(m + 1, n)) even though it works because it will expand the iterables into a tuple and this is memory inefficient.

Credit: comment by njzk2, answer by Locke

Use this:

 // get the values from text boxes
    let a:Double = firstText.text.bridgeToObjectiveC().doubleValue
    let b:Double = secondText.text.bridgeToObjectiveC().doubleValue

//  we checking against 0.0, because above function return 0.0 if it gets failed to convert
    if (a != 0.0) && (b != 0.0) {
        var ans = a + b
        answerLabel.text = "Answer is \(ans)"
    } else {
        answerLabel.text = "Input values are not numberic"
    }

One solution which avoids MultiIndex is to create a new datetime column setting day = 1. Then group by this column.

Normalise day of month

df = pd.DataFrame({'Date': pd.to_datetime(['2017-10-05', '2017-10-20', '2017-10-01', '2017-09-01']),
                   'Values': [5, 10, 15, 20]})

# normalize day to beginning of month, 4 alternative methods below
df['YearMonth'] = df['Date'] + pd.offsets.MonthEnd(-1) + pd.offsets.Day(1)
df['YearMonth'] = df['Date'] - pd.to_timedelta(df['Date'].dt.day-1, unit='D')
df['YearMonth'] = df['Date'].map(lambda dt: dt.replace(day=1))
df['YearMonth'] = df['Date'].dt.normalize().map(pd.tseries.offsets.MonthBegin().rollback)

Then use groupby as normal:

g = df.groupby('YearMonth')

res = g['Values'].sum()

# YearMonth
# 2017-09-01    20
# 2017-10-01    30
# Name: Values, dtype: int64

Comparison with pd.Grouper

The subtle benefit of this solution is, unlike pd.Grouper, the grouper index is normalized to the beginning of each month rather than the end, and therefore you can easily extract groups via get_group:

some_group = g.get_group('2017-10-01')

Calculating the last day of October is slightly more cumbersome. pd.Grouper, as of v0.23, does support a convention parameter, but this is only applicable for a PeriodIndex grouper.

Comparison with string conversion

An alternative to the above idea is to convert to a string, e.g. convert datetime 2017-10-XX to string '2017-10'. However, this is not recommended since you lose all the efficiency benefits of a datetime series (stored internally as numerical data in a contiguous memory block) versus an object series of strings (stored as an array of pointers).

let label = UILabel(frame: CGRect(x: 0, y: 0, width: 200, height: 21))
label.center = CGPoint(x: 160, y: 285)
label.textAlignment = .center
label.text = "My label"
self.view.addSubview(label)

Try above code in ViewDidLoad

Follow these 2 steps:

STEP 1 :

Follow these steps using the Services Tab:

1. Right click on Database
2. Create new Connection

Customize the New COnnection as follows:

1. Connector Name: MYSQL (Connector/J Driver)
2. Host: localhost
3. Port: 3306
4. Database: mysql ( mysql is the default or enter your database name)
5. Username: enter your database username
6. Password: enter your database password
7. JDBC URL: jdbc:mysql://localhost:3306/mysql
8. CLick Finish button

NB: DELETE the ?zeroDateTimeBehaviour=convertToNull part in the URL. Instead of mysql in the URL, you should see your database name)

STEP 2 :

1. Right click on MySQL Server at localhost:3306:[username](...)
2. Select Properties... from the shortcut menu

In the "MySQL Server Properties" dialog select the "Admin Properties" tab Enter the following in the textboxes specified:

For Linux users :

1. Path to start command: /usr/bin/mysql
2. Arguments: /etc/init.d/mysql start
3. Path to Stop command: /usr/bin/mysql
4. Arguments: /etc/init.d/mysql stop

For MS Windows users :

NOTE: Optional:

In the Path/URL to admin tool field, type or browse to the location of your MySQL Administration application such as the MySQL Admin Tool, PhpMyAdmin, or other web-based administration tools.

Note: mysqladmin is the MySQL admin tool found in the bin folder of the MySQL installation directory. It is a command-line tool and not ideal for use with the IDE.

Citations:
https://netbeans.org/kb/docs/ide/mysql.html?print=yes
http://javawebaction.blogspot.com/2013/04/how-to-register-mysql-database-server.html

We will use MySQL Workbench in this example. Please use the path of your installation if you have MySQL workbench and the path to MySQL.

1. Path/URL to admin tool: C:\Program Files\MySQL\MySQL Workbench CE 5.2.47\MySQLWorkbench.exe
2. Arguments: (Leave blank)
3. Path to start command: C:\mysql\bin\mysqld (OR C:\mysql\bin\mysqld.exe)
4. Arguments: (Leave blank)
5. Path to Stop command: C:\mysql\bin\mysqladmin (OR C:\mysql\bin\mysqladmin.exe )
6. Arguments: -u root shutdown (Try -u root stop)

Possible exampes of MySQL bin folder locations for Windows Users:

• C:\mysql\bin
• C:\Program Files\MySQL\MySQL Server 5.1\bin\
• Installation Folder: ~\xampp\mysql\bin

A very flexible way to do that kind of things is using ARRAYFORMULA.

As an example imagine you want to count non empty strings (text fields) you can use this code:

=ARRAYFORMULA(SUM(IF(Len(B3:B14)>0, 1, 0)))

What happens here is that "ArrayFormula" let you operate over a set of values. Using the SUM function you indicates "ArrayFormula" to sum any value of the set. The "If" clause is only used to check "empty" or "not empty", 1 for not empty and 0 otherwise. "Len" returns the length of the different text fields, there is where you define the set (range) you want to check. Finally "ArrayFormula" will sum 1 for each field inside the set(range) in which "len" returns more than 0.

If you want to check any other condition, just modify the first argument of the IF clause.

Send your file as a base64 string.

 var element = angular.element('<a/>');
                         element.attr({
                             href: 'data:attachment/csv;charset=utf-8,' + encodeURI(atob(response.payload)),
                             target: '_blank',
                             download: fname
                         })[0].click();

If attr method not working in Firefox You can also use javaScript setAttribute method

The bootstrap-live-customizer is a good resource for customising your own bootstrap theme and seeing the results live as you customise. Using this website its very easy to just edit the font and then download the updated .css file.

First you have to install a module call Serial. To do that go to the folder call Scripts which is located in python installed folder. If you are using Python 3 version it's normally located in location below,

C:\Python34\Scripts  

Once you open that folder right click on that folder with shift key. Then click on 'open command window here'. After that cmd will pop up. Write the below code in that cmd window,

pip install PySerial

and press enter.after that PySerial module will be installed. Remember to install the module u must have an INTERNET connection.

after successfully installed the module open python IDLE and write down the bellow code and run it.

import serial
# "COM11" is the port that your Arduino board is connected.set it to port that your are using        
ser = serial.Serial("COM11", 9600)
while True:
    cc=str(ser.readline())
    print(cc[2:][:-5])   

According to pip documentation at

http://pip.readthedocs.org/en/stable/user_guide/#configuration

You will need to specify the default install location within a pip.ini file, which, also according to the website above is usually located as follows

On Unix and Mac OS X the configuration file is: $HOME/.pip/pip.conf

On Windows, the configuration file is: %HOME%\pip\pip.ini

The %HOME% is located in C:\Users\Bob on windows assuming your name is Bob

On linux the $HOME directory can be located by using cd ~

You may have to create the pip.ini file when you find your pip directory. Within your pip.ini or pip.config you will then need to put (assuming your on windows) something like

[global]
target=C:\Users\Bob\Desktop

Except that you would replace C:\Users\Bob\Desktop with whatever path you desire. If you are on Linux you would replace it with something like /usr/local/your/path

After saving the command would then be

pip install pandas

However, the program you install might assume it will be installed in a certain directory and might not work as a result of being installed elsewhere.

This problem can also happen in Windows. Cmake looks into the registry and sometimes python values are not set. For those with similar problem:

http://ericsilva.org/2012/10/11/restoring-your-python-registry-in-windows/

Just create a .reg file to set the necessary keys and edit accordingly to match your setup.

Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\Software\Python]

[HKEY_CURRENT_USER\Software\Python\Pythoncore]

[HKEY_CURRENT_USER\Software\Python\Pythoncore\2.6]

[HKEY_CURRENT_USER\Software\Python\Pythoncore\2.6\InstallPath]
@="C:\\python26"

[HKEY_CURRENT_USER\Software\Python\Pythoncore\2.6\PythonPath]
@="C:\\python26;C:\\python26\\Lib\\;C:\\python26\\DLLs\\"

[HKEY_CURRENT_USER\Software\Python\Pythoncore\2.7]

[HKEY_CURRENT_USER\Software\Python\Pythoncore\2.7\InstallPath]
@="C:\\python27"

[HKEY_CURRENT_USER\Software\Python\Pythoncore\2.7\PythonPath]
@="C:\\python27;C:\\python27\\Lib\\;C:\\python27\\DLLs\\"

Try to complete cmake process with following libs:

sudo apt-get install cmake libblkid-dev e2fslibs-dev libboost-all-dev libaudit-dev

I suspect everyone has an answer already, though in case someone comes looking, dplyr na_if() would be (from my perspective) the more efficient of those mentioned:

# Import CSV, convert all 'blank' cells to NA
dat <- read.csv("data2.csv") %>% na_if("")

Here is an additional approach leveraging readr's read_delim function. I just picked-up (probably widely know, but I'll archive here for future users). This is very straight forward and more versatile than the above, as you can capture all types of blank and NA related values in your csv file:

dat <- read_csv("data2.csv", na = c("", "NA", "N/A"))

Note the underscore in readr's version versus Base R "." in read_csv.

Hopefully this helps someone who wanders upon the post!

I have the same problem.

Generally what I did is the same as you.

class dynamicCell: UITableViewCell {

    @IBOutlet var testLabel : UILabel

    init(style: UITableViewCellStyle, reuseIdentifier: String) {
        super.init(style: style, reuseIdentifier: reuseIdentifier)
    }

    override func awakeFromNib() {
        super.awakeFromNib()
    }

    override func setSelected(selected: Bool, animated: Bool) {
        super.setSelected(selected, animated: animated)
    }
}

and in the uitableviewcell method:

func tableView(tableView: UITableView!, cellForRowAtIndexPath indexPath: NSIndexPath!) -> UITableViewCell! {
    var cell :dynamicCell = tableView.dequeueReusableCellWithIdentifier("cell") as dynamicCell

    cell.testLabel.text = "so sad"

    println(cell.testLabel)

    return cell;
}

and yeah the tableview shows nothing! But guess what, it actually shows something...because the log I get from the println(cell.testLabel) shows that all the Labels are actually displayed out.

BUT! their Frames is strange, which have something like this:

frame = (0 -21; 42 21);

so it has a (0,-21) as (x,y), so that means the label just appears at somewhere outside the bound of the cell.

so I try to add adjust the frame manually like this:

cell.testLabel.frame = CGRectMake(10, 10, 42, 21)

and sadly, it doesn't work.

---------------update after 10 min -----------------

I DID IT. so, it seems that the problem comes from the Size Classes.

Click on your .storyboard file and go to the File Inspector Tab

UNCHECK THE Size Classes checkbox

and finally, my "so sad"Label comes out!

Here is the solution that worked for me

=IF(H14<>"",NOW(),"")

Swift 4

DispatchQueue.main.asyncAfter(deadline: .now() + 0.1) {
    // your function here
}

Swift 3

DispatchQueue.main.asyncAfter(deadline: .now() + .seconds(0.1)) {
    // your function here
}

Swift 2

let dispatchTime: dispatch_time_t = dispatch_time(DISPATCH_TIME_NOW, Int64(0.1 * Double(NSEC_PER_SEC))) 
dispatch_after(dispatchTime, dispatch_get_main_queue(), { 
    // your function here 
})

I was having the same problem. To fix it I added the following headers:

Content-Type: application/json

I had to manually add the content type even though I also had the type of "json" in the raw post field parameters.

As mentioned, in Swift most of the time you can achieve what you need with the ? optional unwrapper operator. This allows you to call a method on an object if and only if the object exists (not nil) and the method is implemented.

In the case where you still need respondsToSelector:, it is still there as part of the NSObject protocol.

If you are calling respondsToSelector: on an Obj-C type in Swift, then it works the same as you would expect. If you are using it on your own Swift class, you will need to ensure your class derives from NSObject.

Here's an example of a Swift class that you can check if it responds to a selector:

class Worker : NSObject
{
    func work() { }
    func eat(food: AnyObject) { }
    func sleep(hours: Int, minutes: Int) { }
}

let worker = Worker()

let canWork = worker.respondsToSelector(Selector("work"))   // true
let canEat = worker.respondsToSelector(Selector("eat:"))    // true
let canSleep = worker.respondsToSelector(Selector("sleep:minutes:"))    // true
let canQuit = worker.respondsToSelector(Selector("quit"))   // false

It is important that you do not leave out the parameter names. In this example, Selector("sleep::") is not the same as Selector("sleep:minutes:").

For anyone doing this on iOS8, this is what I had to do:

I have a swift class file titled SettingsView.swift and a .xib file named SettingsView.xib. I run this in MasterViewController.swift (or any view controller really to open a second view controller)

@IBAction func openSettings(sender: AnyObject) {
        var mySettings: SettingsView = SettingsView(nibName: "SettingsView", bundle: nil) /<--- Notice this "nibName" 
        var modalStyle: UIModalTransitionStyle = UIModalTransitionStyle.CoverVertical
        mySettings.modalTransitionStyle = modalStyle
        self.presentViewController(mySettings, animated: true, completion: nil)

    }

This should work for everyone, any screen resolutions:

.modal-body {
    max-height: calc(100vh - 143px);
    overflow-y: auto; }

First, count your modal header and footer height, in my case I have H4 heading so I have them on 141px, already counted default modal margin in 20px(top+bottom).

So that subtract 141px is the max-height for my modal height, for the better result there are both border top and bottom by 1px, for this, 143px will work perfectly.

In some case of styling you may like to use overflow-y: auto; instead of overflow-y: scroll;, try it.

Try it, and you get the best result in both computer or mobile devices. If you have a heading larger than H4, recount it see how much px you would like to subtract.

If you don't know what I am telling, just change the number of 143px, see what is the best result for your case.

Last, I'd suggest have it an inline CSS.

Using javascript's Number.prototype.toLocaleString:

var currencyInput = document.querySelector('input[type="currency"]')
var currency = 'GBP' // https://www.currency-iso.org/dam/downloads/lists/list_one.xml

 // format inital value
onBlur({target:currencyInput})

// bind event listeners
currencyInput.addEventListener('focus', onFocus)
currencyInput.addEventListener('blur', onBlur)


function localStringToNumber( s ){
  return Number(String(s).replace(/[^0-9.-]+/g,""))
}

function onFocus(e){
  var value = e.target.value;
  e.target.value = value ? localStringToNumber(value) : ''
}

function onBlur(e){
  var value = e.target.value

  var options = {
      maximumFractionDigits : 2,
      currency              : currency,
      style                 : "currency",
      currencyDisplay       : "symbol"
  }
  
  e.target.value = (value || value === 0) 
    ? localStringToNumber(value).toLocaleString(undefined, options)
    : ''
}

input{
  padding: 10px;
  font: 20px Arial;
  width: 70%;
}

<input type='currency' value="123" placeholder='Type a number & click outside' />

Here's a very simple demo illustrating the above method (HTML-only)

I've made a tiny React component if anyone's interested

On Windows: - name: Move old folder to backup win_command: "cmd.exe /c move /Y {{ sourcePath }} {{ destinationFolderPath }}"

To rename use rename or ren command instead

Swift 2:

var num1 = 4
var numString = "56"
var sum2 = String(num1) + numString
var sum3 = Int(numString)

If you decide to add a .pch file manually and you want to use Objective-C just like before xCode 6 you will also have to import UIKit and Foundation frameworks in the .pch file. Otherwise you will have to import these frameworks manually in each header file. You can add the following code anyway as it tests for the language used:

#ifdef __OBJC__
    #import <UIKit/UIKit.h>
    #import <Foundation/Foundation.h>
#endif

For Windows, first install the git base from here: https://git-scm.com/downloads

Next, set the environment variable:

1. Press Windows+R and type sysdm.cpl
2. Select advance -> Environment variable
3. Select path-> edit the path and paste the below line:

C:\Program Files\Git\git-bash.exe

To test it, open the command window: press Windows+R, type cmd and then type ssh.

@SweetSpice, use position as absolute in place of relative. It will work

#frame{
overflow: hidden;
width: 860px;
height: 100%;
position: absolute;
}

Yet another way this error message can occur...

If PowerShell is open in a directory other than the target file, e.g.:

If someScript.ps1 is located here: C:\SlowLearner\some_missing_path\someScript.ps1, then C:\SlowLearner>. ./someScript.ps1 wont work.

In that case, navigate to the path: cd some_missing_path then this would work:

C:\SlowLearner\some_missing_path>. ./someScript.ps1

I was struggling with the problem as well.

After I typed $ eval 'ssh-agent -s' followed by $ssh-add ~/.ssh/id_rsa

I got the same complain: "Could not open a connection to your authentication agent". Then I realize there are two different kind of quotation on my computer's keyboard. So I tried the one at the same position as "~": $ eval ssh-agent -s $ ssh-add ~/.ssh/id_rsa

And bang it worked.

Note that Python3 does not read the html code as a string but as a bytearray, so you need to convert it to one with decode.

import urllib.request

fp = urllib.request.urlopen("http://www.python.org")
mybytes = fp.read()

mystr = mybytes.decode("utf8")
fp.close()

print(mystr)

In the accepted answer you get annoying spacing between the visible rows when the expandable row is hidden. You can get rid of that by adding this to css:

.collapse-row.collapsed + tr {
     display: none;
}

'+' is adjacent sibling selector, so if you want your expandable row to be the next row, this selects the next tr following tr named collapse-row.

Here is updated fiddle: http://jsfiddle.net/Nb7wy/2372/

More recent answer with an example, which uses React.useState

Keeping the state in the parent component is the recommended way. The parent needs to have an access to it as it manages it across two children components. Moving it to the global state, like the one managed by Redux, is not recommended for same same reason why global variable is worse than local in general in software engineering.

When the state is in the parent component, the child can mutate it if the parent gives the child value and onChange handler in props (sometimes it is called value link or state link pattern). Here is how you would do it with hooks:

function Parent() {
    var [state, setState] = React.useState('initial input value');
    return <>
        <Child1 value={state} onChange={(v) => setState(v)} />
        <Child2 value={state}>
    </>
}

function Child1(props) {
    return <input
        value={props.value}
        onChange={e => props.onChange(e.target.value)}
    />
}

function Child2(props) {
    return <p>Content of the state {props.value}</p>
}

The whole parent component will re-render on input change in the child, which might be not an issue if the parent component is small / fast to re-render. The re-render performance of the parent component still can be an issue in the general case (for example large forms). This is solved problem in your case (see below).

State link pattern and no parent re-render are easier to implement using the 3rd party library, like Hookstate - supercharged React.useState to cover variety of use cases, including your's one. (Disclaimer: I am an author of the project).

Here is how it would look like with Hookstate. Child1 will change the input, Child2 will react to it. Parent will hold the state but will not re-render on state change, only Child1 and Child2 will.

import { useStateLink } from '@hookstate/core';

function Parent() {
    var state = useStateLink('initial input value');
    return <>
        <Child1 state={state} />
        <Child2 state={state}>
    </>
}

function Child1(props) {
    // to avoid parent re-render use local state,
    // could use `props.state` instead of `state` below instead
    var state = useStateLink(props.state)
    return <input
        value={state.get()}
        onChange={e => state.set(e.target.value)}
    />
}

function Child2(props) {
    // to avoid parent re-render use local state,
    // could use `props.state` instead of `state` below instead
    var state = useStateLink(props.state)
    return <p>Content of the state {state.get()}</p>
}

PS: there are many more examples here covering similar and more complicated scenarios, including deeply nested data, state validation, global state with setState hook, etc. There is also complete sample application online, which uses the Hookstate and the technique explained above.

You can use ~ (tilde operator) to exclude the rows sampled using df.sample(), letting pandas alone handle sampling and filtering of indexes, to obtain two sets.

train_df = df.sample(frac=0.8, random_state=100)
test_df = df[~df.index.isin(train_df.index)]

Notepad++ changed in the past couple of years, and it requires a few extra steps to set up a dark theme.

The answer by Amit-IO is good, but the example theme that is needed has stopped being maintained. The DraculaTheme is active. Just download the XML and put it in a themes folder. You may need Admin access in Windows.

C:\Users\YOUR_USER\AppData\Roaming\Notepad++\themes

https://draculatheme.com/notepad-plus-plus

I've also experienced this problem and sadly it is just a bug in the SDK + Xcode. I talked to an engineer at WWDC, about this and a few other problems I was having with CloudKit. These bugs will be addressed in the next seed of Xcode.

It's the fun part about using beta software.

Declare additional helper function like this:

template <class T, class I >
bool vectorContains(const vector<T>& v, I& t)
{
    bool found = (std::find(v.begin(), v.end(), t) != v.end());
    return found;
}

And use it like this:

void Project::AddPlatform(const char* platform)
{
    if (!vectorContains(platforms, platform))
        platforms.push_back(platform);
}

Snapshot of example can be found here:

https://github.com/tapika/cppscriptcore/blob/b7f3d62747494a52a440482e841ffb016a3fc56e/SolutionProjectModel/Project.cpp#L13

Programmatically, Swift

label.lineBreakMode = NSLineBreakMode.byWordWrapping
label.titleView.numberOfLines = 2

On the client side you can enable cors requests in AngularJS via

app.config(['$httpProvider', function($httpProvider) {
        $httpProvider.defaults.useXDomain = true;
        delete $httpProvider.defaults.headers.common['X-Requested-With'];
    }
]);

However if this still returns an error, this would imply that the server that you are making the request has to allow CORS request and has to be configured for that.

A concise way to check if the string is nil or empty would be:

var myString: String? = nil

if (myString ?? "").isEmpty {
    print("String is nil or empty")
}

var rangeFromLimits = arc4random_uniform( (UPPerBound - LOWerBound) + 1)) + LOWerBound;

var response = taskwithresponse.Result;
          var jsonString = response.ReadAsAsync<List<Job>>().Result;

Simply call list on the generator.

lst = list(gen)
lst

Be aware that this affects the generator which will not return any further items.

You also cannot directly call list in IPython, as it conflicts with a command for listing lines of code.

Tested on this file:

def gen():
    yield 1
    yield 2
    yield 3
    yield 4
    yield 5
import ipdb
ipdb.set_trace()

g1 = gen()

text = "aha" + "bebe"

mylst = range(10, 20)

which when run:

$ python code.py 
> /home/javl/sandbox/so/debug/code.py(10)<module>()
      9 
---> 10 g1 = gen()
     11 

ipdb> n
> /home/javl/sandbox/so/debug/code.py(12)<module>()
     11 
---> 12 text = "aha" + "bebe"
     13 

ipdb> lst = list(g1)
ipdb> lst
[1, 2, 3, 4, 5]
ipdb> q
Exiting Debugger.

General method for escaping function/variable/debugger name conflicts

There are debugger commands p and pp that will print and prettyprint any expression following them.

So you could use it as follows:

$ python code.py 
> /home/javl/sandbox/so/debug/code.py(10)<module>()
      9 
---> 10 g1 = gen()
     11 

ipdb> n
> /home/javl/sandbox/so/debug/code.py(12)<module>()
     11 
---> 12 text = "aha" + "bebe"
     13 

ipdb> p list(g1)
[1, 2, 3, 4, 5]
ipdb> c

There is also an exec command, called by prefixing your expression with !, which forces debugger to take your expression as Python one.

ipdb> !list(g1)
[]

For more details see help p, help pp and help exec when in debugger.

ipdb> help exec
(!) statement
Execute the (one-line) statement in the context of
the current stack frame.
The exclamation point can be omitted unless the first word
of the statement resembles a debugger command.
To assign to a global variable you must always prefix the
command with a 'global' command, e.g.:
(Pdb) global list_options; list_options = ['-l']

Sort using KeyPath

you can sort by KeyPath like this:

myArray.sorted(by: \.fileName, <) /* using `<` for ascending sorting */

By implementing this little helpful extension.

extension Collection{
    func sorted<Value: Comparable>(
        by keyPath: KeyPath<Element, Value>,
        _ comparator: (_ lhs: Value, _ rhs: Value) -> Bool) -> [Element] {
        sorted { comparator($0[keyPath: keyPath], $1[keyPath: keyPath]) }
    }
}

Hope Swift add this in the near future in the core of the language.

For me, the HOST was set differently in tnsnames.ora and listener.ora. One was set to the full name of the computer and the other was set to IP address. I synchronized them to the full name of the computer and it worked. Don't forget to restart the oracle services.

I still don't understand exactly why this caused problem because I think IP address and computer name are ultimately same in my understanding.

I have successfully styled my Bootstrap navbar using the following CSS. Also you didn't define any font in your CSS so that's why the font isn't changing. The site for which this CSS is used can be found here.

.navbar-default .navbar-nav > li > a:hover, .navbar-default .navbar-nav > li > a:focus {
    color: #000; /*Sets the text hover color on navbar*/
}

.navbar-default .navbar-nav > .active > a, .navbar-default .navbar-nav > .active >
        a:hover, .navbar-default .navbar-nav > .active > a:focus {
    color: white; /*BACKGROUND color for active*/
    background-color: #030033;
}

.navbar-default {
    background-color: #0f006f;
    border-color: #030033;
}

.dropdown-menu > li > a:hover,
.dropdown-menu > li > a:focus {
    color: #262626;
    text-decoration: none;
    background-color: #66CCFF; /*change color of links in drop down here*/
}

.nav > li > a:hover,
.nav > li > a:focus {
    text-decoration: none;
    background-color: silver; /*Change rollover cell color here*/
}

.navbar-default .navbar-nav > li > a {
    color: white; /*Change active text color here*/
}

Use IQKeyboardmanager that will help you solve easy.....

/////////////////////////////////////////

![ how to disable the keyboard..][1]

import UIKit

class ViewController: UIViewController,UITextFieldDelegate {

   @IBOutlet weak var username: UITextField!
   @IBOutlet weak var password: UITextField!

   override func viewDidLoad() {
      super.viewDidLoad() 
      username.delegate = self
      password.delegate = self
      // Do any additional setup after loading the view, typically from a nib.
   }

   override func didReceiveMemoryWarning() {
      super.didReceiveMemoryWarning()
      // Dispose of any resources that can be recreated.
   }

   func textFieldShouldReturn(textField: UITextField!) -> Bool // called when   'return' key pressed. return NO to ignore.
   {
      textField.resignFirstResponder()
      return true;
   }

   override func touchesBegan(_: Set<UITouch>, with: UIEvent?) {
     username.resignFirstResponder()
     password.resignFirstResponder()
     self.view.endEditing(true)
  }
}

I think it's better to round the time to milliseconds before the division.

func makeTimestamp() int64 {
    return time.Now().Round(time.Millisecond).UnixNano() / (int64(time.Millisecond)/int64(time.Nanosecond))
}

Here is an example program:

package main

import (
        "fmt"
        "time"
)

func main() {
        fmt.Println(unixMilli(time.Unix(0, 123400000)))
        fmt.Println(unixMilli(time.Unix(0, 123500000)))
        m := makeTimestampMilli()
        fmt.Println(m)
        fmt.Println(time.Unix(m/1e3, (m%1e3)*int64(time.Millisecond)/int64(time.Nanosecond)))
}

func unixMilli(t time.Time) int64 {
        return t.Round(time.Millisecond).UnixNano() / (int64(time.Millisecond) / int64(time.Nanosecond))
}

func makeTimestampMilli() int64 {
        return unixMilli(time.Now())
}

The above program printed the result below on my machine:

123
124
1472313624305
2016-08-28 01:00:24.305 +0900 JST

Another way If you want to remove one or more than one character from the end.

var myStr = "Hello World!"
myStr = (myStr as NSString).substringToIndex((myStr as NSString).length-XX)

Where XX is the number of characters you want to remove.

I have written lot of scripts to automate daily backups etc. Previously I used XCopy and then moved to Robocopy. Anyways Robocopy and XCopy both are frequently used in terms of file transfers in Windows. Robocopy stands for Robust File Copy. All type of huge file copying both these commands are used but Robocopy has added options which makes copying easier as well as for debugging purposes.

Having said that lets talk about features between these two.

• Robocopy becomes handy for mirroring or synchronizing directories. It also checks the files in the destination directory against the files to be copied and doesn't waste time copying unchanged files.

• Just like myself, if you are into automation to take daily backups etc, "Run Hours - /RH" becomes very useful without any interactions. This is supported by Robocopy. It allows you to set when copies should be done rather than the time of the command as with XCopy. You will see robocopy.exe process in task list since it will run background to monitor clock to execute when time is right to copy.

• Robocopy supports file and directory monitoring with the "/MON" or "/MOT" commands.

• Robocopy gives extra support for copying over the "archive" attribute on files, it supports copying over all attributes including timestamps, security, owner, and auditing information.

Hope this helps you.

In my particular case, I finally realised that my phpMyAdmin was using port 3308 while Laravel was attempting to connect through 3306. so my advice would be to ensure you have the correct connection string!

Right click your project > Run As > Run Configuration... > Java Application (in left side panel) - double click on it. That will create new configuration. click on search button under Main Class section and select your main class from it.

Non-Programming Answer: Download and install an older version of the Access Database Engine (2010 or 2007 for example, rather than 2013). Open Excel, navigate to the "Data" tab on the Ribbon and click "From Access". Import the data into Excel, and then Export to an accdb file or do whatever with it. NOTE! opening Access 2013 will trigger a re-install of the 2013 engine, so keep the 2007/2010 installation .exe around.

Programming Answer: Having installed an older version of Access Database Engine, you can use an OLEDB connection in multiple programming environments (C#, VBA, VBScript, etc.) to read/write and move Access data. Gord Thompson's answer also presents the option of jumping to SQL server and back.

See This post for a similar problem using an OLEDB connection

Connectionstrings.com is a great resource

See this post for how to setup an OLEDB connection using C#

Question : string "4.0000" can not be convert into integer using Int("4.000")?

Answer : Int() check string is integer or not if yes then give you integer and otherwise nil. but Float or Double can convert any number string to respective Float or Double without giving nil. Example if you have "45" integer string but using Float("45") gives you 45.0 float value or using Double("4567") gives you 45.0.

Solution : NSString(string: "45.000").integerValue or Int(Float("45.000")!)! to get correct result.

(Note: starting Oct. 2020, any new repository is created with the default branch main, not master. And you can rename existing repository default branch from master to main.
The rest of this 2014 answer has been updated to use "main")

If the GitHub repo has seen new commits pushed to it, while you were working locally, I would advise using:

git pull --rebase
git push

The full syntax is:

git pull --rebase origin main
git push origin main

With Git 2.6+ (Sept. 2015), after having done (once)

git config --global pull.rebase true
git config --global rebase.autoStash true

A simple git pull would be enough.
(Note: with Git 2.27 Q2 2020, a merge.autostash is also available for your regular pull, without rebase)

That way, you would replay (the --rebase part) your local commits on top of the newly updated origin/main (or origin/yourBranch: git pull origin yourBranch).

See a more complete example in the chapter 6 Pull with rebase of the Git Pocket Book.

I would recommend a:

# add and commit first
git push -u origin main

That would establish a tracking relationship between your local main branch and its upstream branch.
After that, any future push for that branch can be done with a simple:

git push

See "Why do I need to explicitly push a new branch?".

Since the OP already reset and redone its commit on top of origin/main:

git reset --mixed origin/main
git add .
git commit -m "This is a new commit for what I originally planned to be amended"
git push origin main

There is no need to pull --rebase.

Note: git reset --mixed origin/main can also be written git reset origin/main, since the --mixed option is the default one when using git reset.

This question is already answered, but i also got same issue to debug Springboot + gradle + jHipster,

Mostly Spring boot application can debug by right click and debug, but when you use gradle, having some additional environment parameter setup then it is not possible to debug directly.

To resolve this, Eclipse provided one additional features as Remote Java Application

by using this features you can debug your application.

Follow below step:

run your gradle application with ./gradlew bootRun --debug-jvm command

Now go to eclipse --> right click project and Debug configuration --> Remote Java Application.

add you host and port as localhost and port as 5005 (default for gradle debug, you can change it)

Refer for more detail and step.

So, the issue was that I was trying to inappropriately use @lazy, which caused my Business variable to essentially be a constant, and thusly uneditable. Also, instead of loading the local json, I'm now loading only the data returned from the API.

import UIKit

class BusinessTableViewController: UITableViewController {

    var data: NSMutableData = NSMutableData()
    var Business: NSMutableArray = NSMutableArray()

    override func viewDidLoad() {
        super.viewDidLoad()

        navigationItem.titleView = UIImageView(image: UIImage(named: "growler"))

        tableView.registerClass(BeerTableViewCell.self, forCellReuseIdentifier: "cell")
        tableView.separatorStyle = .None

        fetchKimono()
    }

    override func numberOfSectionsInTableView(tableView: UITableView!) -> Int {
        return Business.count
    }

    override func tableView(tableView: UITableView?, numberOfRowsInSection section: Int) -> Int {
        if (Business.count > 0) {
            let biz = Business[section] as NSDictionary
            let beers = biz["results"] as NSArray
            return beers.count
        } else {
            return 0;
        }
    }

    override func tableView(tableView: UITableView?, cellForRowAtIndexPath indexPath: NSIndexPath?) -> UITableViewCell? {
        let cell = tableView!.dequeueReusableCellWithIdentifier("cell", forIndexPath: indexPath!) as BeerTableViewCell
        if let path = indexPath {
            let biz = Business[path.section] as NSDictionary
            let beers = biz["results"] as NSArray
            let beer = beers[path.row] as NSDictionary

            cell.titleLabel.text = beer["BeerName"] as String
        } else {
            cell.titleLabel.text = "Loading"
        }

        return cell
    }

    override func tableView(tableView: UITableView!, viewForHeaderInSection section: Int) -> UIView! {
        let view = LocationHeaderView()
        let biz = Business[section] as NSDictionary
        if (Business.count > 0) {
            let count = "\(Business.count)"
            view.titleLabel.text = (biz["name"] as String).uppercaseString
        }
        return view
    }

    override func tableView(tableView: UITableView!, heightForHeaderInSection section: Int) -> CGFloat {
        return 45
    }

    func fetchKimono() {
        var urlPath = "names have been removed to protect the innocent"
        var url: NSURL = NSURL(string: urlPath)
        var request: NSURLRequest = NSURLRequest(URL: url)
        var connection: NSURLConnection = NSURLConnection(request: request, delegate: self, startImmediately: false)

        connection.start()
    }

    func connection(didReceiveResponse: NSURLConnection!, didReceiveResponse response: NSURLResponse!) {
        // Recieved a new request, clear out the data object
        self.data = NSMutableData()
    }

    func connection(connection: NSURLConnection!, didReceiveData data: NSData!) {
        // Append the recieved chunk of data to our data object
        self.data.appendData(data)
    }

    func connectionDidFinishLoading(connection: NSURLConnection!) {
        // Request complete, self.data should now hold the resulting info
        // Convert the retrieved data in to an object through JSON deserialization
        var err: NSError
        var jsonResult: NSDictionary = NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.MutableContainers, error: nil) as NSDictionary
        var results: NSDictionary = jsonResult["results"] as NSDictionary
        var collection: NSArray = results["collection1"] as NSArray
        if jsonResult.count>0 && collection.count>0 {
            Business = jsonResult
            tableView.reloadData()
        }
    }
}

Swift Docs on @lazy:

You must always declare a lazy property as a variable (with the var keyword), because its initial value may not be retrieved until after instance initialization completes. Constant properties must always have a value before initialization completes, and therefore cannot be declared as lazy.

@Martin Konecny's answer provides the correct answer, but - as he mentions - it only works if the actual script is not invoked through a symlink residing in a different directory.

This answer covers that case: a solution that also works when the script is invoked through a symlink or even a chain of symlinks:

Linux / GNU readlink solution:

If your script needs to run on Linux only or you know that GNU readlink is in the $PATH, use readlink -f, which conveniently resolves a symlink to its ultimate target:

 scriptDir=$(dirname -- "$(readlink -f -- "$BASH_SOURCE")")

^{Note that GNU readlink has 3 related options for resolving a symlink to its ultimate target's full path: -f (--canonicalize), -e (--canonicalize-existing), and -m (--canonicalize-missing) - see man readlink.
Since the target by definition exists in this scenario, any of the 3 options can be used; I've chosen -f here, because it is the most well-known one.}

Multi-(Unix-like-)platform solution (including platforms with a POSIX-only set of utilities):

If your script must run on any platform that:

• has a readlink utility, but lacks the -f option (in the GNU sense of resolving a symlink to its ultimate target) - e.g., macOS.

  • macOS uses an older version of the BSD implementation of readlink; note that recent versions of FreeBSD/PC-BSD do support -f.

• does not even have readlink, but has POSIX-compatible utilities - e.g., HP-UX (thanks, @Charles Duffy).

The following solution, inspired by https://stackoverflow.com/a/1116890/45375, defines helper shell function, rreadlink(), which resolves a given symlink to its ultimate target in a loop - this function is in effect a POSIX-compliant implementation of GNU readlink's -e option, which is similar to the -f option, except that the ultimate target must exist.

Note: The function is a bash function, and is POSIX-compliant only in the sense that only POSIX utilities with POSIX-compliant options are used. For a version of this function that is itself written in POSIX-compliant shell code (for /bin/sh), see here.

• If readlink is available, it is used (without options) - true on most modern platforms.

• Otherwise, the output from ls -l is parsed, which is the only POSIX-compliant way to determine a symlink's target.
  Caveat: this will break if a filename or path contains the literal substring -> - which is unlikely, however.
  (Note that platforms that lack readlink may still provide other, non-POSIX methods for resolving a symlink; e.g., @Charles Duffy mentions HP-UX's find utility supporting the %l format char. with its -printf primary; in the interest of brevity the function does NOT try to detect such cases.)

• An installable utility (script) form of the function below (with additional functionality) can be found as rreadlink in the npm registry; on Linux and macOS, install it with [sudo] npm install -g rreadlink; on other platforms (assuming they have bash), follow the manual installation instructions.

If the argument is a symlink, the ultimate target's canonical path is returned; otherwise, the argument's own canonical path is returned.

#!/usr/bin/env bash

# Helper function.
rreadlink() ( # execute function in a *subshell* to localize the effect of `cd`, ...

  local target=$1 fname targetDir readlinkexe=$(command -v readlink) CDPATH= 

  # Since we'll be using `command` below for a predictable execution
  # environment, we make sure that it has its original meaning.
  { \unalias command; \unset -f command; } &>/dev/null

  while :; do # Resolve potential symlinks until the ultimate target is found.
      [[ -L $target || -e $target ]] || { command printf '%s\n' "$FUNCNAME: ERROR: '$target' does not exist." >&2; return 1; }
      command cd "$(command dirname -- "$target")" # Change to target dir; necessary for correct resolution of target path.
      fname=$(command basename -- "$target") # Extract filename.
      [[ $fname == '/' ]] && fname='' # !! curiously, `basename /` returns '/'
      if [[ -L $fname ]]; then
        # Extract [next] target path, which is defined
        # relative to the symlink's own directory.
        if [[ -n $readlinkexe ]]; then # Use `readlink`.
          target=$("$readlinkexe" -- "$fname")
        else # `readlink` utility not available.
          # Parse `ls -l` output, which, unfortunately, is the only POSIX-compliant 
          # way to determine a symlink's target. Hypothetically, this can break with
          # filenames containig literal ' -> ' and embedded newlines.
          target=$(command ls -l -- "$fname")
          target=${target#* -> }
        fi
        continue # Resolve [next] symlink target.
      fi
      break # Ultimate target reached.
  done
  targetDir=$(command pwd -P) # Get canonical dir. path
  # Output the ultimate target's canonical path.
  # Note that we manually resolve paths ending in /. and /.. to make sure we
  # have a normalized path.
  if [[ $fname == '.' ]]; then
    command printf '%s\n' "${targetDir%/}"
  elif  [[ $fname == '..' ]]; then
    # Caveat: something like /var/.. will resolve to /private (assuming
    # /var@ -> /private/var), i.e. the '..' is applied AFTER canonicalization.
    command printf '%s\n' "$(command dirname -- "${targetDir}")"
  else
    command printf '%s\n' "${targetDir%/}/$fname"
  fi
)

# Determine ultimate script dir. using the helper function.
# Note that the helper function returns a canonical path.
scriptDir=$(dirname -- "$(rreadlink "$BASH_SOURCE")")

even simpler, adding up to String[],

use built-in filter filter(StringUtils::isNotEmpty) of org.apache.commons.lang3

import org.apache.commons.lang3.StringUtils;

    String test = "a\nb\n\nc\n";
    String[] lines = test.split("\\n", -1);


    String[]  result = Arrays.stream(lines).filter(StringUtils::isNotEmpty).toArray(String[]::new);
    System.out.println(Arrays.toString(lines));
    System.out.println(Arrays.toString(result));

and output: [a, b, , c, ] [a, b, c]

In Swift 4, just as simple as Swift 3:

self.view.backgroundColor = UIColor.brown

More generally, I think you might want to get "top" of the rows that are sorted within a given group.

For the case of where a single value is max'd out, you have essentially sorted by only one column. However, it's often useful to hierarchically sort by multiple columns (for example: a date column and a time-of-day column).

# Answering the question of getting row with max "value".
df %>% 
  # Within each grouping of A and B values.
  group_by( A, B) %>% 
  # Sort rows in descending order by "value" column.
  arrange( desc(value) ) %>% 
  # Pick the top 1 value
  slice(1) %>% 
  # Remember to ungroup in case you want to do further work without grouping.
  ungroup()

# Answering an extension of the question of 
# getting row with the max value of the lowest "C".
df %>% 
  # Within each grouping of A and B values.
  group_by( A, B) %>% 
  # Sort rows in ascending order by C, and then within that by 
  # descending order by "value" column.
  arrange( C, desc(value) ) %>% 
  # Pick the one top row based on the sort
  slice(1) %>% 
  # Remember to ungroup in case you want to do further work without grouping.
  ungroup()

For problems where it seems to be an error on a line you think is correct, you can often remove/comment the line where the error appears to be and, if the error moves to the next line, there are two possibilities.

Either both lines have a problem or the previous line has a problem which is being carried forward. The most likely case is the second option (even more so if you remove another line and it moves again).

For example, the following Python program twisty_passages.py:

xyzzy = (1 +
plugh = 7

generates the error:

  File "twisty_passages.py", line 2
    plugh = 7
          ^
SyntaxError: invalid syntax

despite the problem clearly being on line 1.

In your particular case, that is the problem. The parentheses in the line before your error line is unmatched, as per the following snippet:

# open parentheses: 1  2             3
#                   v  v             v
fi2=0.460*scipy.sqrt(1-(Tr-0.566)**2/(0.434**2)+0.494
#                               ^             ^
# close parentheses:            1             2

Depending on what you're trying to achieve, the solution may be as simple as just adding another closing parenthesis at the end, to close off the sqrt function.

I can't say for certain since I don't recognise the expression off the top of my head. Hardly surprising if (assuming PSAT is the enzyme, and the use of the typeMolecule identifier) it's to do with molecular biology - I seem to recall failing Biology consistently in my youth :-)

You really should implement prefersStatusBarHidden on your view controller(s):

Swift 3 and later

override var prefersStatusBarHidden: Bool {
    return true
}

Structs are value type and Classes are reference type

• Value types are faster than Reference types
• Value type instances are safe in a multi-threaded environment as multiple threads can mutate the instance without having to worry about the race conditions or deadlocks
• Value type has no references unlike reference type; therefore there is no memory leaks.

Use a value type when:

• You want copies to have independent state, the data will be used in code across multiple threads

Use a reference type when:

• You want to create shared, mutable state.

Further information could be also found in the Apple documentation

https://docs.swift.org/swift-book/LanguageGuide/ClassesAndStructures.html

Additional Information

Swift value types are kept in the stack. In a process, each thread has its own stack space, so no other thread will be able to access your value type directly. Hence no race conditions, locks, deadlocks or any related thread synchronization complexity.

Value types do not need dynamic memory allocation or reference counting, both of which are expensive operations. At the same time methods on value types are dispatched statically. These create a huge advantage in favor of value types in terms of performance.

As a reminder here is a list of Swift

Value types:

• Struct
• Enum
• Tuple
• Primitives (Int, Double, Bool etc.)
• Collections (Array, String, Dictionary, Set)

Reference types:

• Class
• Anything coming from NSObject
• Function
• Closure

I recommend using Kingfisher library to download images asynchronously. The best part about using Kingfisher is, it caches all the downloaded images by default with the image url as an id. Next time when you request to download image with that particular URl, it will load it from cache.

Usage:

newsImage.kf.setImage(with: imageUrl!, placeholder: nil, options: nil, progressBlock: nil, completionHandler: { (image, error, cacheType, imageUrl) in
                if error == nil{
                    self.activityIndicator.stopAnimating()
                }else if error != nil{
                    self.activityIndicator.stopAnimating()
                }
            })

Have a look at the documentation. You made the following mistakes. Firstly, ps.executeQuery() doesn't have any parameters. Instead you passed the SQL query into it.

Secondly, regarding the prepared statement, you have to use the ? symbol if want to pass any parameters. And later bind it using

setXXX(index, value) 

Here xxx stands for the data type.

open the services window as administrator,Then try to start the service.That worked for me.

Use flatMap. If a value is present, flatMap returns a sequential Stream containing only that value, otherwise returns an empty Stream. So there is no need to use ifPresent() . Example:

list.stream().map(data -> data.getSomeValue).map(this::getOptinalValue).flatMap(Optional::stream).collect(Collectors.toList());

Generate environment variables from script (Unix script) :

echo "BUILD_DATE=$(date +%F-%T)"

There are a couple of options. You can use the --device flag that use can use to access USB devices without --privileged mode:

docker run -t -i --device=/dev/ttyUSB0 ubuntu bash

Alternatively, assuming your USB device is available with drivers working, etc. on the host in /dev/bus/usb, you can mount this in the container using privileged mode and the volumes option. For example:

docker run -t -i --privileged -v /dev/bus/usb:/dev/bus/usb ubuntu bash

Note that as the name implies, --privileged is insecure and should be handled with care.

If you code C or C++ language. I think we are lucky because we could use a file to input. It is so convenient and clear. I often do that. This is argument to implement it :

{
freopen("inputfile", "r", stdin);
}

Notice that inputfile must locate at same directory with source code file, r is stand for read.

Swift 5

I used "actionsheet" style for iPhone and "alert" for iPad. iPad displays in the center of the screen. No need to specify sourceView or anchor the view anywhere.

var alertStyle = UIAlertController.Style.actionSheet
if (UIDevice.current.userInterfaceIdiom == .pad) {
  alertStyle = UIAlertController.Style.alert
}

let alertController = UIAlertController(title: "Your title", message: nil, preferredStyle: alertStyle)

Edit: Per ShareToD's suggestion, updated deprecated "UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiom.pad" check

To my knowledge, there is sadly no CSS filter to colorise an element (perhaps with the use of some SVG filter magic, but I'm somewhat unfamiliar with that) and even if that wasn't the case, filters are basically only supported by webkit browsers.

With that said, you could still work around this and use a canvas to modify your image. Basically, you can draw an image element onto a canvas and then loop through the pixels, modifying the respective RGBA values to the colour you want.

However, canvases do come with some restrictions. Most importantly, you have to make sure that the image src comes from the same domain as the page. Otherwise the browser won't allow you to read or modify the pixel data of the canvas.

Here's a JSFiddle changing the colour of the JSFiddle logo.

//Base64 source, but any local source will work_x000D_
var src = "data:image/png;base64,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";_x000D_
var canvas = document.getElementById("theCanvas");_x000D_
var ctx = canvas.getContext("2d");_x000D_
var img = new Image;_x000D_
_x000D_
//wait for the image to load_x000D_
img.onload = function() {_x000D_
    //Draw the original image so that you can fetch the colour data_x000D_
    ctx.drawImage(img,0,0);_x000D_
    var imgData = ctx.getImageData(0, 0, canvas.width, canvas.height);_x000D_
    _x000D_
    /*_x000D_
    imgData.data is a one-dimensional array which contains _x000D_
    the respective RGBA values for every pixel _x000D_
    in the selected region of the context _x000D_
    (note i+=4 in the loop)_x000D_
    */_x000D_
    _x000D_
    for (var i = 0; i < imgData.data.length; i+=4) {_x000D_
   imgData.data[i] = 255; //Red, 0-255_x000D_
   imgData.data[i+1] = 255; //Green, 0-255_x000D_
   imgData.data[i+2] = 255; //Blue, 0-255_x000D_
   /* _x000D_
   imgData.data[i+3] contains the alpha value_x000D_
   which we are going to ignore and leave_x000D_
   alone with its original value_x000D_
   */_x000D_
    }_x000D_
    ctx.clearRect(0, 0, canvas.width, canvas.height); //clear the original image_x000D_
    ctx.putImageData(imgData, 0, 0); //paint the new colorised image_x000D_
}_x000D_
_x000D_
//Load the image!_x000D_
img.src = src;

body {_x000D_
    background: green;_x000D_
}

<canvas id="theCanvas"></canvas>

You need to add path to svn.exe file to system environment, variable PATH, after that you can run command mvn from any folder. You can do it from command line(cmd.exe) like this, for example:

set PATH=%PATH%;C:\maven\bin

Or you can got to the folder where mvn.exe is, and run your command there.

And you need not mvn -version, but mvn --version parameter.

Swipe gesture to the view you want, or viewcontroller whole view in Swift 5 & XCode 11 based on @Alexandre Cassagne

override func viewDidLoad() {
    super.viewDidLoad()

    addSwipe()
}

func addSwipe() {
    let directions: [UISwipeGestureRecognizer.Direction] = [.right, .left, .up, .down]
    for direction in directions {
        let gesture = UISwipeGestureRecognizer(target: self, action: #selector(handleSwipe))
        gesture.direction = direction
        self.myView.addGestureRecognizer(gesture)// self.view
    }
}

@objc func handleSwipe(sender: UISwipeGestureRecognizer) {
    let direction = sender.direction
    switch direction {
        case .right:
            print("Gesture direction: Right")
        case .left:
            print("Gesture direction: Left")
        case .up:
            print("Gesture direction: Up")
        case .down:
            print("Gesture direction: Down")
        default:
            print("Unrecognized Gesture Direction")
    }
}

Create a new folder and run git init in it.

Then try git remote add origin <your-repository-url>.

Copy all the files in your project folder to the new folder, except the .git folder (it may be invisible).

Then you can push your code by doing:
git add --all; or git add -A;
git commit -m "YOUR MESSAGE";
git push -u origin master.

I think it will work!

I was facing the same problem and non of the above solutions helped me. In my Web Api 2 project, I had actually updated my database and had placed a unique constraint on an SQL table column. That was actually causing the problem. Simply Checking the the duplicate column values before inserting helped me fix the problem!

If i say without loop, i can use GOTO statement for delete large amount of records using sql server. exa.

 IsRepeat:
    DELETE TOP (10000)
    FROM <TableName>
    IF @@ROWCOUNT > 0
         GOTO IsRepeat

like this way you can delete large amount of data with smaller size of delete.

let me know if requires more information.

There is a package matrixStats that provides some functions to do column and row summaries, see in the package vignette, but you have to convert your data.frame into a matrix.

Then you run: colMaxs(as.matrix(ozone))

Your question answers itself ;) If og_date contains the date, it's probably a string, so og_date.value is undefined.

Simply use og_date.split('-') instead of og_date.value.split('-')

Using the SVG from @ArnoTenkink as an data url combined with the accepted answer, this gives us the perfect solution for retina displays.

select.form-control:not([multiple]) {
    border-radius: 0;
    appearance: none;
    background-position: right 50%;
    background-repeat: no-repeat;
    background-image: url(data:image/svg+xml,%3C%3Fxml%20version%3D%221.0%22%20encoding%3D%22utf-8%22%3F%3E%20%3C%21DOCTYPE%20svg%20PUBLIC%20%22-//W3C//DTD%20SVG%201.1//EN%22%20%22http%3A//www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd%22%3E%20%3Csvg%20version%3D%221.1%22%20id%3D%22Layer_1%22%20xmlns%3D%22http%3A//www.w3.org/2000/svg%22%20xmlns%3Axlink%3D%22http%3A//www.w3.org/1999/xlink%22%20x%3D%220px%22%20y%3D%220px%22%20width%3D%2214px%22%20height%3D%2212px%22%20viewBox%3D%220%200%2014%2012%22%20enable-background%3D%22new%200%200%2014%2012%22%20xml%3Aspace%3D%22preserve%22%3E%20%3Cpolygon%20points%3D%223.862%2C7.931%200%2C4.069%207.725%2C4.069%20%22/%3E%3C/svg%3E);
    padding: .5em;
    padding-right: 1.5em
}

I had the same issue and it turned out special symbols in the module name are replaced by xcode (in my case dashes ended up being underscores). In project settings check "module name" to find the module name for your project. After that either use ModuleName-Swift.h or rename the module in settings.