From the docs

IF boolean-expression THEN
    statements
ELSE
    statements
END IF;

So in your above example the code should look as follows:

IF select count(*) from orders > 0
THEN
  DELETE from orders
ELSE 
  INSERT INTO orders values (1,2,3);
END IF;

You were missing: END IF;

Since PostgreSQL 9.1 there is the convenient FOREACH:

DO
$do$
DECLARE
   m   varchar[];
   arr varchar[] := array[['key1','val1'],['key2','val2']];
BEGIN
   FOREACH m SLICE 1 IN ARRAY arr
   LOOP
      RAISE NOTICE 'another_func(%,%)',m[1], m[2];
   END LOOP;
END
$do$

Solution for older versions:

DO
$do$
DECLARE
   arr varchar[] := '{{key1,val1},{key2,val2}}';
BEGIN
   FOR i IN array_lower(arr, 1) .. array_upper(arr, 1)
   LOOP
      RAISE NOTICE 'another_func(%,%)',arr[i][1], arr[i][2];
   END LOOP;
END
$do$

Also, there is no difference between varchar[] and varchar[][] for the PostgreSQL type system. I explain in more detail here.

The DO statement requires at least PostgreSQL 9.0, and LANGUAGE plpgsql is the default (so you can omit the declaration).

To return a single row

Simpler with OUT parameters:

CREATE OR REPLACE FUNCTION get_object_fields(_school_id int
                                       , OUT user1_id   int
                                       , OUT user1_name varchar(32)
                                       , OUT user2_id   int
                                       , OUT user2_name varchar(32)) AS 
$func$
BEGIN
   SELECT INTO user1_id, user1_name
          u.id, u.name
   FROM   users u
   WHERE  u.school_id = _school_id
   LIMIT  1;  -- make sure query returns 1 row - better in a more deterministic way?

   user2_id := user1_id + 1; -- some calculation

   SELECT INTO user2_name
          u.name       
   FROM   users u
   WHERE  u.id = user2_id;
END
$func$  LANGUAGE plpgsql;

Call:

SELECT * FROM get_object_fields(1);

• You don't need to create a type just for the sake of this plpgsql function. It may be useful if you want to bind multiple functions to the same composite type. Else, OUT parameters do the job.

• There is no RETURN statement. OUT parameters are returned automatically with this form that returns a single row. RETURN is optional.

• Since OUT parameters are visible everywhere inside the function body (and can be used just like any other variable), make sure to table-qualify columns of the same name to avoid naming conflicts! (Better yet, use distinct names to begin with.)

Simpler yet - also to return 0-n rows

Typically, this can be simpler and faster if queries in the function body can be combined. And you can use RETURNS TABLE() (since Postgres 8.4, long before the question was asked) to return 0-n rows.

The example from above can be written as:

CREATE OR REPLACE FUNCTION get_object_fields2(_school_id int)
  RETURNS TABLE (user1_id   int
               , user1_name varchar(32)
               , user2_id   int
               , user2_name varchar(32)) AS 
$func$
BEGIN
   RETURN QUERY
   SELECT u1.id, u1.name, u2.id, u2.name
   FROM   users u1
   JOIN   users u2 ON u2.id = u1.id + 1
   WHERE  u1.school_id = _school_id
   LIMIT  1;  -- may be optional
END
$func$  LANGUAGE plpgsql;

Call:

SELECT * FROM get_object_fields2(1);

• RETURNS TABLE is effectively the same as having a bunch of OUT parameters combined with RETURNS SETOF record, just shorter.

• The major difference: this function can return 0, 1 or many rows, while the first version always returns 1 row.
  Add LIMIT 1 like demonstrated to only allow 0 or 1 row.

• RETURN QUERY is simple way to return results from a query directly.
  You can use multiple instances in a single function to add more rows to the output.

db<>fiddle here (demonstrating both)

Varying row-type

If your function is supposed to dynamically return results with a different row-type depending on the input, read more here:

• Refactor a PL/pgSQL function to return the output of various SELECT queries

I had exactly the same problem. Just one more working modification of the solution given by Denis (the type must be specified):

SELECT ARRAY(
SELECT column_name::text
FROM information_schema.columns
WHERE table_name='aean'
)

Hi please check the below link

https://www.postgresql.org/docs/current/xfunc-sql.html

EX:

CREATE FUNCTION sum_n_product_with_tab (x int)
RETURNS TABLE(sum int, product int) AS $$
    SELECT $1 + tab.y, $1 * tab.y FROM tab;
$$ LANGUAGE SQL;

Procedural elements like loops are not part of the SQL language and can only be used inside the body of a procedural language function, procedure (Postgres 11 or later) or a DO statement, where such additional elements are defined by the respective procedural language. The default is PL/pgSQL, but there are others.

Example with plpgsql:

DO
$do$
BEGIN 
   FOR i IN 1..25 LOOP
      INSERT INTO playtime.meta_random_sample
         (col_i, col_id)                       -- declare target columns!
      SELECT  i,     id
      FROM   tbl
      ORDER  BY random()
      LIMIT  15000;
   END LOOP;
END
$do$;

For many tasks that can be solved with a loop, there is a shorter and faster set-based solution around the corner. Pure SQL equivalent for your example:

INSERT INTO playtime.meta_random_sample (col_i, col_id)
SELECT t.*
FROM   generate_series(1,25) i
CROSS  JOIN LATERAL (
   SELECT i, id
   FROM   tbl
   ORDER  BY random()
   LIMIT  15000
   ) t;

About generate_series():

• What is the expected behaviour for multiple set-returning functions in select clause?

About optimizing performance of random selections:

• Best way to select random rows PostgreSQL

Your function would work like this:

CREATE OR REPLACE FUNCTION prc_tst_bulk(sql text)
RETURNS TABLE (name text, rowcount integer) AS 
$$
BEGIN

RETURN QUERY EXECUTE '
WITH v_tb_person AS (' || sql || $x$)
SELECT name, count(*)::int FROM v_tb_person WHERE nome LIKE '%a%' GROUP BY name
UNION
SELECT name, count(*)::int FROM v_tb_person WHERE gender = 1 GROUP BY name$x$;

END     
$$ LANGUAGE plpgsql;

Call:

SELECT * FROM prc_tst_bulk($$SELECT a AS name, b AS nome, c AS gender FROM tbl$$)

• You cannot mix plain and dynamic SQL the way you tried to do it. The whole statement is either all dynamic or all plain SQL. So I am building one dynamic statement to make this work. You may be interested in the chapter about executing dynamic commands in the manual.

• The aggregate function count() returns bigint, but you had rowcount defined as integer, so you need an explicit cast ::int to make this work

• I use dollar quoting to avoid quoting hell.

However, is this supposed to be a honeypot for SQL injection attacks or are you seriously going to use it? For your very private and secure use, it might be ok-ish - though I wouldn't even trust myself with a function like that. If there is any possible access for untrusted users, such a function is a loaded footgun. It's impossible to make this secure.

Craig (a sworn enemy of SQL injection!) might get a light stroke, when he sees what you forged from his piece of code in the answer to your preceding question. :)

The query itself seems rather odd, btw. But that's beside the point here.

I think you're looking for SELECT INTO:

select test_table.name into name from test_table where id = x;

That will pull the name from test_table where id is your function's argument and leave it in the name variable. Don't leave out the table name prefix on test_table.name or you'll get complaints about an ambiguous reference.

Just want to add my two cents on this old post:

In my opinion, almost all of relational database engines include a commit transaction execution automatically after execute a DDL command even when you have autocommit=false, So you don't need to start a transaction to avoid a potential truncated object creation because It is completely unnecessary.

I'm not familiar with postgresql, but in SQL Server or Oracle, using a subquery would work like below (in Oracle, the SELECT 0 would be SELECT 0 FROM DUAL)

SELECT SUM(sub.value)
FROM
( 
  SELECT SUM(columnA) as value FROM my_table
  WHERE columnB = 1
  UNION
  SELECT 0 as value
) sub

Maybe this would work for postgresql too?

If INSERTS are rare, I would avoid doing a NOT EXISTS (...) since it emits a SELECT on all updates. Instead, take a look at wildpeaks answer: https://dba.stackexchange.com/questions/5815/how-can-i-insert-if-key-not-exist-with-postgresql

CREATE OR REPLACE FUNCTION upsert_tableName(arg1 type, arg2 type) RETURNS VOID AS $$ 
    DECLARE 
    BEGIN 
        UPDATE tableName SET col1 = value WHERE colX = arg1 and colY = arg2; 
        IF NOT FOUND THEN 
        INSERT INTO tableName values (value, arg1, arg2); 
        END IF; 
    END; 
    $$ LANGUAGE 'plpgsql'; 

This way Postgres will initially try to do a UPDATE. If no rows was affected, it will fall back to emitting an INSERT.

In my particular case the function was actually missing. The error message is the same. I am using the Postgresql plugin PostGIS and I had to reinstall that for whatever reason.

Use count(*)

declare 
   cnt integer;
begin
  SELECT count(*) INTO cnt
  FROM people
  WHERE person_id = my_person_id;

IF cnt > 0 THEN
  -- Do something
END IF;

Edit (for the downvoter who didn't read the statement and others who might be doing something similar)

The solution is only effective because there is a where clause on a column (and the name of the column suggests that its the primary key - so the where clause is highly effective)

Because of that where clause there is no need to use a LIMIT or something else to test the presence of a row that is identified by its primary key. It is an effective way to test this.

In this case it would probably be better to just have an empty database that you use as a template and when you need to refresh, drop the existing database and create a new one from the template.

Name = editTextName.getText().toString().trim();
Email = editTextEmail.getText().toString().trim();
Phone = editTextMobile.getText().toString().trim();


JSONArray jsonArray = new JSONArray();
jsonArray.put(Name);
jsonArray.put(Email);
jsonArray.put(Phone);
final String mRequestBody = jsonArray.toString();

StringRequest stringRequest = new StringRequest(Request.Method.PUT, OTP_Url, new Response.Listener<String>() {
    @Override
    public void onResponse(String response) {
        Log.v("LOG_VOLLEY", response);

    }
}, new Response.ErrorListener() {
    @Override
    public void onErrorResponse(VolleyError error) {
        Log.e("LOG_VOLLEY", error.toString());
    }
}) {
    @Override
    public String getBodyContentType() {
        return "application/json; charset=utf-8";
    }

    @Override
    public byte[] getBody() throws AuthFailureError {
        try {
            return mRequestBody == null ? null : mRequestBody.getBytes("utf-8");
        } catch (UnsupportedEncodingException uee) {
            VolleyLog.wtf("Unsupported Encoding while trying to get the bytes of %s using %s", mRequestBody, "utf-8");
            return null;
        }
    }

};
stringRequest.setShouldCache(false);
VollySupport.getmInstance(RegisterActivity.this).addToRequestque(stringRequest);

Now there is also @CreatedDate and @LastModifiedDate annotations.

=> https://programmingmitra.blogspot.fr/2017/02/automatic-spring-data-jpa-auditing-saving-CreatedBy-createddate-lastmodifiedby-lastmodifieddate-automatically.html

(Spring framework)

$('#myId').val() should do it, failing that I would try:

$('#myId option:selected').val()

I'd like to add that TypeGuards only work on strings or numbers, if you want to compare an object use instanceof

if(task.id instanceof UUID) {
  //foo
}

When you register for a new website, often you are sent an email to activate your account. That email typically contains a link to click on. Part of that link, contains a token, the server knows about this token and can associate it with your account. The token would usually have an expiry date associated with it, so you may only have an hour to click on the link and activate your account. None of this would be possible with cookies or session variables, since its unknown what device or browser the customer is using to check emails.

Use static_cast<int>:

int num = static_cast<int>(letter); // if letter='a', num=97

Edit: You probably should try to avoid to use (int)

int num = (int) letter;

check out Why use static_cast<int>(x) instead of (int)x? for more info.

   public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    // Set View to register.xml
    setContentView(R.layout.register);
    session = new UserSessionManeger(getApplicationContext());     

    login_id= (EditText) findViewById(R.id.loginid);
    Suponser_id= (EditText) findViewById(R.id.sponserid);
    name=(EditText) findViewById(R.id.name);
    pass=(EditText) findViewById(R.id.pass);
    moblie=(EditText) findViewById(R.id.mobile);
    email= (EditText) findViewById(R.id.email);
    placment= (EditText) findViewById(R.id.placement);
    Adress= (EditText) findViewById(R.id.adress);
    State = (EditText) findViewById(R.id.state);

    city=(EditText) findViewById(R.id.city);
    pincopde=(EditText) findViewById(R.id.pincode);
    counntry= (EditText) findViewById(R.id.country);

    plantype= (EditText) findViewById(R.id.plantype);


    mRegister = (Button)findViewById(R.id.registration); 
  //  session.createUserLoginSession(info.getCustomerID(),info.getName(),info.getMobile(),info.getEmailID(),info.getAccountType());
    mRegister.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub


             SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME1);        

                request.addProperty("LoginCustomerID",login_id.getText().toString());
                request.addProperty("SponsorID",Suponser_id.getText().toString());
                request.addProperty("Name", name.getText().toString());
                request.addProperty("LoginPassword",pass.getText().toString() );
                request.addProperty("MobileNumber",smoblie=moblie.getText().toString());
                request.addProperty("Email",email.getText().toString() );
                request.addProperty("Placement", placment.getText().toString()); 
                request.addProperty("address1",  Adress.getText().toString());
                request.addProperty("StateID", State.getText().toString());
                request.addProperty("CityName",city.getText().toString());

                request.addProperty("Pincode",pincopde.getText().toString());


                request.addProperty("CountryID",counntry.getText().toString());
                request.addProperty("PlanType",plantype.getText().toString());



                //Declare the version of the SOAP request
                SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);

                envelope.setOutputSoapObject(request);
                envelope.dotNet = true;
                try {

                    HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);

                    //this is the actual part that will call the webservice
                     androidHttpTransport.call(SOAP_ACTION1, envelope);


                    SoapObject result = (SoapObject)envelope.getResponse();  
                    Log.e("value of result", " result"+result);
                    if(result!= null)
                    {


                        Toast.makeText(getApplicationContext(), "successfully register ", 2000).show()  ;

                    }
                    else {

                        Toast.makeText(getApplicationContext(), "Try Again..", 2000).show() ;   
                    }

                } catch (Exception e) {
                    e.printStackTrace();
                }



        }
    });
    }

  }

While we can't say if some tablets omit "mobile", many including the Samsung Galaxy Tab do have mobile in their user-agent, making it impossible to detect between an android tablet and android phone without resorting to checking model specifics. This IMHO is a waste of time unless you plan on updating and expanding your device list on a monthly basis.

Unfortunately the best solution here is to complain to Google about this and get them to fix Chrome for Android so it adds some text to identify between a mobile device and a tablet. Hell even a single letter M OR T in a specific place in the string would be enough, but I guess that makes too much sense.

You can create the headers on the fly (no need to specify delimiter when the delimiter is a comma):

Import-CSV $filepath -Header IP1,IP2,IP3,IP4 | Foreach-Object{
   Write-Host $_.IP1
   Write-Host $_.IP2
   ...
}

What you have to do is to append the values as parameters in the iframe src (URL).

E.g. <iframe src="some_page.php?somedata=5&more=bacon"></iframe>

And then in some_page.php file you use php $_GET['somedata'] to retrieve it from the iframe URL. NB: Iframes run as a separate browser window in your file.

Please reformulate your question. Your first sentence does not make sense. .

To address your question:

http://ip.of.server/ should work in principle. However, depending on configuration (virtual hosting) only using the correct host name may work.

At any rate, if you have a network, you should properly configure DNS, otherwise all kinds of problems (such as this) may occur.

You can use the new URL for Google Maps: https://www.google.com/maps/@39.774769,-74.86084,18z equivalent to http://maps.google.com/?ll=39.774769,-74.86084.

39.774769 is the latitude and -74.86084 is longitude and 18z is 18 zoom level.

Version 2.0.3 :

• Go to the project directory and just say play (and nothing after that). That will open the play console.

• Next, say run 8080. That will start play on port 8080.

I hope this helps.

try appending sudo before whatever command you are trying.

like this : sudo npm install

Using sudo with a command in Linux/UNIX generally elevates your permissions to superuser levels. In Windows, the superuser account is usually called 'Administrator.' In Linux/Unix the superuser account is generally named 'root'.

The root user has permission to access, modify or delete almost any file on your computer. Normal user accounts can access, modify or delete many fewer files. The restrictions on a normal account protect your computer from unauthorized or harmful programs or users. Some processes require you to perform actions on files or folders you don't normally have permissions to access. Installing a program that everyone can access is one of these actions.

In your case, running the installation command with sudo gives you the permissions of the superuser, and allows you to modify files that your normal user doesn't have permission to modify.

An explanation from a liberal arts major, not a comp sci major:

When people say that a language or language feature is type safe, they mean that the language will help prevent you from, for example, passing something that isn't an integer to some logic that expects an integer.

For example, in C#, I define a function as:

 void foo(int arg)

The compiler will then stop me from doing this:

  // call foo
  foo("hello world")

In other languages, the compiler would not stop me (or there is no compiler...), so the string would be passed to the logic and then probably something bad will happen.

Type safe languages try to catch more at "compile time".

On the down side, with type safe languages, when you have a string like "123" and you want to operate on it like an int, you have to write more code to convert the string to an int, or when you have an int like 123 and want to use it in a message like, "The answer is 123", you have to write more code to convert/cast it to a string.

Just follow this

idiot_type = "the biggest idiot"
year = 22
print("I have been {} for {} years ".format(idiot_type, years))

OR

idiot_type = "the biggest idiot"
year = 22
print("I have been %s for %s years."% (idiot_type, year))

And forget all others, else the brain won't be able to map all the formats.

I have never developed with HangOut. I ran into the same problems with FB-login and I was trying so hard to get it to click programatically. Then later I discovered that the sdk won't allow you to programatically click the button because of some security reasons. The user has to physically click on the button. This also happens with async asp fileupload button. So please check if HangOut does allow you to programatically click a buttton. All above codes are correct and they should work. If you dig deep enough you will see that my answer is the right answer for your situation you.

A programmatic solution:

SELECT pg_encoding_to_char(encoding) FROM pg_database WHERE datname = 'yourdb';

This is another way to do it. I think maybe a little more general:

df.ix[:,-1]

ps -ef | grep tomcat | awk '{print $2}' | xargs kill -9

https://gist.github.com/nrshrivatsan/1d2ea4fcdcb9d1857076

Part 1

ps -ef | grep tomcat => Get all processes with tomcat grep

Part 2

Once we have process details, we pipe it into the part 2 of the script

awk '{print $2}' | xargs kill -9 => Get the second column [Process id] and kill them with -9 option

Hope this helps.

I faced this problem (404) too and the root cause was my file was named INDEX.md. I was developing on Windows and my local Jekyll site worked (since Windows treats file names case insensitive by default). When pushed to Github, it didn't work. Once I renamed the INDEX.md to index.md, things worked well.

I have worked extensively in Excel and have found the following 3 points very useful

Find if there are cells which apparently do not hold any data but Excel considers them to have data

You can find this by using the following property on a sheet

ActiveSheet.UsedRange.Rows.Count
ActiveSheet.UsedRange.Columns.Count

If this range is more than the cells on which you have data, delete the rest of the rows/columns

You will be surprised to see the amount of space it can free

Convert files to .xlsb format

XLSM format is to make Excel compliant with Open XML, but there are very few instances when we actually use the XML format of Excel. This reduces size by almost 50% if not more

Optimum way of storing information

For example if you have to save the stock price for around 10 years, and you need to save Open, High, Low, Close for a stock, this would result in (252*10) * (4) cells being used

Instead, of using separate columns for Open,High,Low,Close save them in a single column with a field separator Open:High:Low:Close

You can easily write a function to extract info from the single column whenever you want to, but it will free up almost 2/3rd space that you are currently taking up

recordId is property of the object

@Override
    public boolean equals(Object obj) {
        if (this == obj)
            return true;
        if (obj == null)
            return false;
        if (getClass() != obj.getClass())
            return false;
        Nai_record other = (Nai_record) obj;
        if (recordId == null) {
            if (other.recordId != null)
                return false;
        } else if (!recordId.equals(other.recordId))
            return false;
        return true;
    }

You can also pad the characters left by including a number following the X, such as this: string.format("0x{0:X8}", string_to_modify), which yields "0x00000C20".

//funcion para seleccionar por el text del select
var text = '';
var canal = ($("#name_canal").val()).split(' ');
$('#id_empresa option').each(function(i, option) {
        text = $('#id_empresa option:eq('+i+')').text();
        if(text.toLowerCase() == canal[0].toLowerCase()){
            $('#id_empresa option:eq('+i+')').attr('selected', true);
        }
    });

The latest way to go is to use the unit 'ch' which stands for character.

You can simply write:

p { max-width: 75ch; }

The only trick is that whitespaces won't be counted as characters..

Check also this post: https://stackoverflow.com/a/26975271/4069992

The ContentList's Set method will not get called when you change a value inside the collection, instead you should be looking out for the CollectionChanged event firing.

public class CollectionViewModel : ViewModelBase
{          
    public ObservableCollection<EntityViewModel> ContentList
    {
        get { return _contentList; }
    }

    public CollectionViewModel()
    {
         _contentList = new ObservableCollection<EntityViewModel>();
         _contentList.CollectionChanged += ContentCollectionChanged;
    }

    public void ContentCollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
    {
        //This will get called when the collection is changed
    }
}

Okay, that's twice today I've been bitten by the MSDN documentation being wrong. In the link I gave you it says:

Occurs when an item is added, removed, changed, moved, or the entire list is refreshed.

But it actually doesn't fire when an item is changed. I guess you'll need a more bruteforce method then:

public class CollectionViewModel : ViewModelBase
{          
    public ObservableCollection<EntityViewModel> ContentList
    {
        get { return _contentList; }
    }

    public CollectionViewModel()
    {
         _contentList = new ObservableCollection<EntityViewModel>();
         _contentList.CollectionChanged += ContentCollectionChanged;
    }

    public void ContentCollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
    {
        if (e.Action == NotifyCollectionChangedAction.Remove)
        {
            foreach(EntityViewModel item in e.OldItems)
            {
                //Removed items
                item.PropertyChanged -= EntityViewModelPropertyChanged;
            }
        }
        else if (e.Action == NotifyCollectionChangedAction.Add)
        {
            foreach(EntityViewModel item in e.NewItems)
            {
                //Added items
                item.PropertyChanged += EntityViewModelPropertyChanged;
            }     
        }       
    }

    public void EntityViewModelPropertyChanged(object sender, PropertyChangedEventArgs e)
    {
        //This will get called when the property of an object inside the collection changes
    }
}

If you are going to need this a lot you may want to subclass your own ObservableCollection that triggers the CollectionChanged event when a member triggers its PropertyChanged event automatically (like it says it should in the documentation...)

You can simply pass the functions as a list:

In [20]: df.groupby("dummy").agg({"returns": [np.mean, np.sum]})
Out[20]:         
           mean       sum
dummy                    
1      0.036901  0.369012

or as a dictionary:

In [21]: df.groupby('dummy').agg({'returns':
                                  {'Mean': np.mean, 'Sum': np.sum}})
Out[21]: 
        returns          
           Mean       Sum
dummy                    
1      0.036901  0.369012

//Just add 

RewriteBase /
//after 
RewriteEngine On

//and you are done....

//so it should be 

RewriteEngine On
RewriteBase /
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^ index.php [QSA,L]

Git v2.0 Release Notes

Backward compatibility notes

When git push [$there] does not say what to push, we have used the traditional "matching" semantics so far (all your branches were sent to the remote as long as there already are branches of the same name over there). In Git 2.0, the default is now the "simple" semantics, which pushes:

• only the current branch to the branch with the same name, and only when the current branch is set to integrate with that remote branch, if you are pushing to the same remote as you fetch from; or

• only the current branch to the branch with the same name, if you are pushing to a remote that is not where you usually fetch from.

You can use the configuration variable "push.default" to change this. If you are an old-timer who wants to keep using the "matching" semantics, you can set the variable to "matching", for example. Read the documentation for other possibilities.

When git add -u and git add -A are run inside a subdirectory without specifying which paths to add on the command line, they operate on the entire tree for consistency with git commit -a and other commands (these commands used to operate only on the current subdirectory). Say git add -u . or git add -A . if you want to limit the operation to the current directory.

git add <path> is the same as git add -A <path> now, so that git add dir/ will notice paths you removed from the directory and record the removal. In older versions of Git, git add <path> used to ignore removals. You can say git add --ignore-removal <path> to add only added or modified paths in <path>, if you really want to.

I tried to work with all the suggested answers above but nothing seems to work for me. So i am trying to explain what worked for me here.

I believe if you are calling some method like the Main below or even with a single parameter as in your question, you just have to change the type of parameter from string to object for this to work. I have a class like below

//Assembly.dll
namespace TestAssembly{
    public class Main{

        public void Hello()
        { 
            var name = Console.ReadLine();
            Console.WriteLine("Hello() called");
            Console.WriteLine("Hello" + name + " at " + DateTime.Now);
        }

        public void Run(string parameters)
        { 
            Console.WriteLine("Run() called");
            Console.Write("You typed:"  + parameters);
        }

        public string TestNoParameters()
        {
            Console.WriteLine("TestNoParameters() called");
            return ("TestNoParameters() called");
        }

        public void Execute(object[] parameters)
        { 
            Console.WriteLine("Execute() called");
           Console.WriteLine("Number of parameters received: "  + parameters.Length);

           for(int i=0;i<parameters.Length;i++){
               Console.WriteLine(parameters[i]);
           }
        }

    }
}

Then you have to pass the parameterArray inside an object array like below while invoking it. The following method is what you need to work

private void ExecuteWithReflection(string methodName,object parameterObject = null)
{
    Assembly assembly = Assembly.LoadFile("Assembly.dll");
    Type typeInstance = assembly.GetType("TestAssembly.Main");

    if (typeInstance != null)
    {
        MethodInfo methodInfo = typeInstance.GetMethod(methodName);
        ParameterInfo[] parameterInfo = methodInfo.GetParameters();
        object classInstance = Activator.CreateInstance(typeInstance, null);

        if (parameterInfo.Length == 0)
        {
            // there is no parameter we can call with 'null'
            var result = methodInfo.Invoke(classInstance, null);
        }
        else
        {
            var result = methodInfo.Invoke(classInstance,new object[] { parameterObject } );
        }
    }
}

This method makes it easy to invoke the method, it can be called as following

ExecuteWithReflection("Hello");
ExecuteWithReflection("Run","Vinod");
ExecuteWithReflection("TestNoParameters");
ExecuteWithReflection("Execute",new object[]{"Vinod","Srivastav"});

If you installed as a rpm or deb, then service jenkins restart will work also.

Simply

array.splice(array.indexOf(item), 1);

You cannot use path with directory separators directly, but you will have to make a file object for every directory.

NOTE: This code makes directories, yours may not need that...

File file= context.getFilesDir();
file.mkdir();

String[] array=filePath.split("/");
for(int t=0; t< array.length -1 ;t++)
{
    file=new File(file,array[t]);
    file.mkdir();
}

File f=new File(file,array[array.length-1]);

RandomAccessFileOutputStream rvalue = new RandomAccessFileOutputStream(f,append);

Yes, that is possible. At its lowest level Bluetooth allows you to connect up to 7 devices to one master device. I have done this and it has worked well for me, but only on other platforms (linux) where I had lots of manual control - I've never tried that on Android and there are some possible complications so you will need to do some testing to be certain.

One of the issues is that you need the tablet to the master and Android doesn't give you any explicit control of this. It is likely that this won't be a problem because * the tablet will automatically become the master when you try to connect a second device to it, or * you will be able to control the master/slave roles by how you setup your socket connection

I will caution though that most apps using Bluetooth on mobile are not attempting many simultaneous connections and Bluetooth can be a bit fragile, e.g. what if two devices already have a Bluetooth connection for some other app - how might that affect the roles?

I run into this frequently for some reason, and I can't fathom why this solution hasn't been mentioned:

Click View ? Output (or just hold Ctrl and hit W > O)

Console output then appears where your Error List, Locals, and Watch windows are.

Note: I'm using Visual Studio 2015.

The easiest solution to workaround this is to create 'temporary' input with type submit and trigger click:

var submitInput = $("<input type='submit' />");
$("#aspnetForm").append(submitInput);
submitInput.trigger("click");

For window user, Please run complete command to convert *.dot file to png:

C:\Program Files (x86)\Graphviz2.38\bin\dot.exe" -Tpng sampleTest.dot > sampletest.png.....

I have found a bug in solgraph that it is utilizing older version of solidity-parser that does not seem to be intelligent enough to capture new enhancement done for solidity programming language itself e.g. emit keyword for Event

If you mean the screen where you have that interpreter prompt >>> you can do CTRL+L on Bash shell can help. Windows does not have equivalent. You can do

import os
os.system('cls')  # on windows

or

os.system('clear')  # on linux / os x

internal static string UnixToDate(int Timestamp, string ConvertFormat)
{
    DateTime ConvertedUnixTime = DateTimeOffset.FromUnixTimeSeconds(Timestamp).DateTime;
    return ConvertedUnixTime.ToString(ConvertFormat);
}

int Timestamp = (int)DateTime.UtcNow.Subtract(new DateTime(1970, 1, 1)).TotalSeconds;

Usage:

UnixToDate(1607013172, "HH:mm:ss"); // Output 16:32:52
Timestamp; // Output 1607013172

These are mostly equivalent, but import * has some restrictions that import ... = require doesn't.

import * as creates an identifier that is a module object, emphasis on object. According to the ES6 spec, this object is never callable or newable - it only has properties. If you're trying to import a function or class, you should use

import express = require('express');

or (depending on your module loader)

import express from 'express';

Attempting to use import * as express and then invoking express() is always illegal according to the ES6 spec. In some runtime+transpilation environments this might happen to work anyway, but it might break at any point in the future without warning, which will make you sad.

If you use an operating system that uses copy-on-write fork() semantics (like any common unix), then as long as you never alter your data structure it will be available to all child processes without taking up additional memory. You will not have to do anything special (except make absolutely sure you don't alter the object).

The most efficient thing you can do for your problem would be to pack your array into an efficient array structure (using numpy or array), place that in shared memory, wrap it with multiprocessing.Array, and pass that to your functions. This answer shows how to do that.

If you want a writeable shared object, then you will need to wrap it with some kind of synchronization or locking. multiprocessing provides two methods of doing this: one using shared memory (suitable for simple values, arrays, or ctypes) or a Manager proxy, where one process holds the memory and a manager arbitrates access to it from other processes (even over a network).

The Manager approach can be used with arbitrary Python objects, but will be slower than the equivalent using shared memory because the objects need to be serialized/deserialized and sent between processes.

There are a wealth of parallel processing libraries and approaches available in Python. multiprocessing is an excellent and well rounded library, but if you have special needs perhaps one of the other approaches may be better.

First things first ,

they are not always equal

    select 'Hello' from dual where 'Hello  ' like 'Hello';

    select 'Hello' from dual where 'Hello  ' =  'Hello';

when things are not always equal , talking about their performance isn't that relevant.

If you are working on strings and only char variables , then you can talk about performance . But don't use like and "=" as being generally interchangeable .

As you would have seen in many posts ( above and other questions) , in cases when they are equal the performance of like is slower owing to pattern matching (collation)

public enum EnumRole {

ROLE_ANONYMOUS_USER_ROLE ("anonymous user role"),
ROLE_INTERNAL ("internal role");

private String roleName;

public String getRoleName() {
    return roleName;
}

EnumRole(String roleName) {
    this.roleName = roleName;
}

public static final EnumRole getByValue(String value){
    return Arrays.stream(EnumRole.values()).filter(enumRole -> enumRole.roleName.equals(value)).findFirst().orElse(ROLE_ANONYMOUS_USER_ROLE);
}

public static void main(String[] args) {
    System.out.println(getByValue("internal role").roleName);
}

}

I think the flaw here is that HTML is a Chomsky Type 2 grammar (context free grammar) and a regular expression is a Chomsky Type 3 grammar (regular grammar). Since a Type 2 grammar is fundamentally more complex than a Type 3 grammar (see the Chomsky hierarchy), it is mathematically impossible to parse XML with a regular expression.

But many will try, and some will even claim success - but until others find the fault and totally mess you up.

Note to the above solution (from A Paul): The solution doesn't work, cause it doesn't reconstructs back a HashMap< String, Object > - instead it creates a HashMap< String, LinkedHashMap >.

Reason why is because during demarshalling, each Object (JSON marshalled as a LinkedHashMap) is used as-is, it takes 1-on-1 the LinkedHashMap (instead of converting the LinkedHashMap back to its proper Object).

If you had a HashMap< String, MyOwnObject > then proper demarshalling was possible - see following example:

ObjectMapper mapper = new ObjectMapper();
TypeFactory typeFactory = mapper.getTypeFactory();
MapType mapType = typeFactory.constructMapType(HashMap.class, String.class, MyOwnObject.class);
HashMap<String, MyOwnObject> map = mapper.readValue(new StringReader(hashTable.toString()), mapType);

If you just want to add title to the tableView header dont add a view. In swift 3.x the code goes like this:

override func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
    var lblStr = ""
    if section == 0 {
        lblStr = "Some String 1"
    }
    else if section == 1{
        lblStr = "Some String 2"
    }
    else{
        lblStr = "Some String 3"
    }
    return lblStr
}

You may implement an array to fetch the title for the headers.

I had the same issue and here is how I manage to pass through:

In your case you have addToCount() which is called. now to pass down a param when user clicks, you can say @click="addToCount(item.contactID)"

in your function implementation you can receive the params like:

addToCount(paramContactID){
 // the paramContactID contains the value you passed into the function when you called it
 // you can do what you want to do with the paramContactID in here!

}

Bit late on this thread. angular.equals does deep check, however does anyone know that why its behave differently if one of the member contain "$" in prefix ?

You can try this Demo with following input

var obj3 = {}
obj3.a=  "b";
obj3.b={};
obj3.b.$c =true;

var obj4 = {}
obj4.a=  "b";
obj4.b={};
obj4.b.$c =true;

angular.equals(obj3,obj4);

Maybe I'm missing something, but what's wrong with Enum.GetName?

public string GetName(PublishStatusses value)
{
    return Enum.GetName(typeof(PublishStatusses), value)
}

edit: for user-friendly strings, you need to go through a .resource to get internationalisation/localisation done, and it would arguably be better to use a fixed key based on the enum key than a decorator attribute on the same.

I was facing same issue, used below query to resolve it.

While creating DB you can use utf-8 encoding

eg. create database my_db character set utf8 collate utf8mb4;

EDIT: (Considering suggestions from comments) Changed utf8_bin to utf8mb4

If you are using security annotation from the SensioFrameworkExtraBundle, you can use a few expressions (that are defined in \Symfony\Component\Security\Core\Authorization\ExpressionLanguageProvider):

• @Security("is_authenticated()"): to check that the user is authed and not anonymous
• @Security("is_anonymous()"): to check if the current user is the anonymous user
• @Security("is_fully_authenticated()"): equivalent to is_granted('IS_AUTHENTICATED_FULLY')
• @Security("is_remember_me()"): equivalent to is_granted('IS_AUTHENTICATED_REMEMBERED')

You can try using get_the_category():

$categories = get_the_category();
$category_id = $categories[0]->cat_ID;

Your problem comes from the 32/64 bit version of your JDK/JRE... Your shared lib is searched for a 32 bit version.

Your default JDK is a 32 bit version. Try to install a 64 bit one by default and relaunch your `.sh file.

Daniel's answer was good except I had to change this code...

    SchemeRegistry registry = new SchemeRegistry();
    registry.register(new Scheme("http", PlainSocketFactory.getSocketFactory(), 80));
    registry.register(new Scheme("https", sf, 443));

    ClientConnectionManager ccm = new ThreadSafeClientConnManager(params, registry);

to this code...

    ClientConnectionManager ccm = new ThreadSafeClientConnManager(params, registry);
    SchemeRegistry registry = ccm.getShemeRegistry()
    registry.register(new Scheme("http", PlainSocketFactory.getSocketFactory(), 80));
    registry.register(new Scheme("https", sf, 443));

to get it to work.

I had the same issue when I used a DockerFile. My Docker is based on the php:5.5-apache image.

I got that error when executing the command "RUN docker-php-ext-install soap"

I have solved it by adding the following command to my DockerFile

"RUN apt-get update && apt-get install -y libxml2-dev"

Suggestion 1

When you add an object to $stateProvider.state that object is then passed with the state. So you can add additional properties which you can read later on when needed.

Example route configuration

$stateProvider
.state('public', {
    abstract: true,
    module: 'public'
})
.state('public.login', {
    url: '/login',
    module: 'public'
})
.state('tool', {
    abstract: true,
    module: 'private'
})
.state('tool.suggestions', {
    url: '/suggestions',
    module: 'private'
});

The $stateChangeStart event gives you acces to the toState and fromState objects. These state objects will contain the configuration properties.

Example check for the custom module property

$rootScope.$on('$stateChangeStart', function(e, toState, toParams, fromState, fromParams) {
    if (toState.module === 'private' && !$cookies.Session) {
        // If logged out and transitioning to a logged in page:
        e.preventDefault();
        $state.go('public.login');
    } else if (toState.module === 'public' && $cookies.Session) {
        // If logged in and transitioning to a logged out page:
        e.preventDefault();
        $state.go('tool.suggestions');
    };
});

I didn't change the logic of the cookies because I think that is out of scope for your question.

Suggestion 2

You can create a Helper to get you this to work more modular.

Value publicStates

myApp.value('publicStates', function(){
    return {
      module: 'public',
      routes: [{
        name: 'login', 
        config: { 
          url: '/login'
        }
      }]
    };
});

Value privateStates

myApp.value('privateStates', function(){
    return {
      module: 'private',
      routes: [{
        name: 'suggestions', 
        config: { 
          url: '/suggestions'
        }
      }]
    };
});

The Helper

myApp.provider('stateshelperConfig', function () {
  this.config = {
    // These are the properties we need to set
    // $stateProvider: undefined
    process: function (stateConfigs){
      var module = stateConfigs.module;
      $stateProvider = this.$stateProvider;
      $stateProvider.state(module, {
        abstract: true,
        module: module
      });
      angular.forEach(stateConfigs, function (route){
        route.config.module = module;
        $stateProvider.state(module + route.name, route.config);
      });
    }
  };

  this.$get = function () {
    return {
      config: this.config
    };
  };
});

Now you can use the helper to add the state configuration to your state configuration.

myApp.config(['$stateProvider', '$urlRouterProvider', 
    'stateshelperConfigProvider', 'publicStates', 'privateStates',
  function ($stateProvider, $urlRouterProvider, helper, publicStates, privateStates) {
    helper.config.$stateProvider = $stateProvider;
    helper.process(publicStates);
    helper.process(privateStates);
}]);

This way you can abstract the repeated code, and come up with a more modular solution.

Note: the code above isn't tested

I think this code will do what you want. It stores the first row as a set of headers, then stores the rest in a data object which you can write to disk as JSON.

var XLSX = require('xlsx');
var workbook = XLSX.readFile('test.xlsx');
var sheet_name_list = workbook.SheetNames;
sheet_name_list.forEach(function(y) {
    var worksheet = workbook.Sheets[y];
    var headers = {};
    var data = [];
    for(z in worksheet) {
        if(z[0] === '!') continue;
        //parse out the column, row, and value
        var col = z.substring(0,1);
        var row = parseInt(z.substring(1));
        var value = worksheet[z].v;

        //store header names
        if(row == 1) {
            headers[col] = value;
            continue;
        }

        if(!data[row]) data[row]={};
        data[row][headers[col]] = value;
    }
    //drop those first two rows which are empty
    data.shift();
    data.shift();
    console.log(data);
});

prints out

[ { id: 1,
    headline: 'team: sally pearson',
    location: 'Australia',
    'body text': 'majority have…',
    media: 'http://www.youtube.com/foo' },
  { id: 2,
    headline: 'Team: rebecca',
    location: 'Brazil',
    'body text': 'it is a long established…',
    media: 'http://s2.image.foo/' } ]

You can use the eclipse plugin as suggested by Oscar earlier. Or if you are a command line person, you can use Apache Axis WSDL2Java tool from command prompt. You can find more details here http://axis.apache.org/axis/java/reference.html#WSDL2JavaReference

Based on your desire that 1317427200 be the output, there are several layers of issue to address.

• First as others have mentioned, java already uses a UTC 1/1/1970 epoch. There is normally no need to calculate the epoch and perform subtraction unless you have weird locale rules.

• Second, when you create a new Calendar it's initialized to 'now' so it includes the time of day. Changing the year/month/day doesn't affect the time of day fields. So if you want it to represent midnight of the date, you need to zero out the calendar before you set the date.

• Third, you haven't specified how you're supposed to handle time zones. Daylight Savings can cause differences in the absolute number of seconds represented by a particular calendar-on-the-wall-date, depending on where your JVM is running. Since epoch is in UTC, we probably want to work in UTC times? You may need to seek clarification from the makers of the system you're interfacing with.

• Fourth, months in Java are zero indexed. January is 0, October is 9.

Putting all that together

Calendar calendar = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
calendar.clear();
calendar.set(2011, Calendar.OCTOBER, 1);
long secondsSinceEpoch = calendar.getTimeInMillis() / 1000L;

that will give you 1317427200

The path for the latest version of Git is changed, In my laptop, I found it in

C:\Users\Anum Sheraz\AppData\Local\Programs\Git\bin\git.exe

This resolved my issue of path. Hope that helps to someone :)

You'll have to use JS to open the popup, though you can put it on the page conditionally with PHP, you're right that you'll have to use a JavaScript function.

what you are looking for is a java de-compiler. I recommend JAD http://www.kpdus.com/jad.html It's free for non commercial use and gets the job done.

Note: this isn't going to make the code exactly the same as what was written. i.e. you're going to lose comments and possibly variable names, so it's going to be a little bit harder than just reading normal source code. If the developer is really secretive they will have obfuscated their code as well, making it even harder to read.

I got this error because I was serving from my file system. Once I started with a http server chrome could figure it out.

What you can try to do is get the transformation Matrix from the animation before you stop it and inspect the Matrix contents to get the position values you are looking for.

Here are the api's you should look into

public boolean getTransformation (long currentTime, Transformation outTransformation)

public Matrix getMatrix ()

public void getValues (float[] values)

So for example (some pseudo code. I have not tested this):

Transformation outTransformation = new Transformation();
myAnimation.getTransformation(currentTime, outTransformation);
Matrix transformationMatrix = outTransformation.getMatrix();
float[] matrixValues = new float[9];
transformationMatrix.getValues(matrixValues);
float transX = matrixValues[Matrix.MTRANS_X];
float transY = matrixValues[Matrix.MTRANS_Y];

Workbooks.open("E:\sarath\PTMetrics\20131004\D8 L538-L550 16MY\D8 L538-L550_16MY_Powertrain Metrics_20131002.xlsm")

Or, in a more structured way...

Sub openwb()
    Dim sPath As String, sFile As String
    Dim wb As Workbook

    sPath = "E:\sarath\PTMetrics\20131004\D8 L538-L550 16MY\"
    sFile = sPath & "D8 L538-L550_16MY_Powertrain Metrics_20131002.xlsm"

    Set wb = Workbooks.Open(sFile)
End Sub

Add the following before the return 0:

system("PAUSE");  

This prints a line to hit a key to close the window. It will keep the window up until you hit the enter key. I have my students add it to all their programs.

For completeness, the deeper bulleted lists:

Nested deeper levels: ---- leave here an empty row * first level A item - no space in front the bullet character * second level Aa item - 1 space is enough * third level Aaa item - 5 spaces min * second level Ab item - 4 spaces possible too * first level B item

Nested deeper levels:

• first level A item - no space in front the bullet character
  • second level Aa item - 1 space is enough
    • third level Aaa item - 5 spaces min
  • second level Ab item - 4 spaces possible too

• first level B item

  Nested deeper levels:
   ...Skip a line and indent eight spaces. (as said in the editor-help, just on this page)
  * first level A item - no space in front the bullet character
   * second level Aa item - 1 space is enough
       * third level Aaa item - 5 spaces min
      * second level Ab item - 4 spaces possible too
  * first level B item
  
          And there
          could be even more
          such octets of spaces.
  

Try this:

package main

import (
  "io"; 
  )


func main() {
  contents,_ := io.ReadFile("filename");
  println(string(contents));
  io.WriteFile("filename", contents, 0644);
}

With a simple generic function you can make this very easy. Just do this:

return ConvertFromDBVal<string>(accountNumber);

using the function:

public static T ConvertFromDBVal<T>(object obj)
{
    if (obj == null || obj == DBNull.Value)
    {
        return default(T); // returns the default value for the type
    }
    else
    {
        return (T)obj;
    }
}

This code worked for me

public static void main(String[] args) {
    try {
        java.net.URL myUr = new java.net.URL("http://path");
        System.out.println("Instantiated new URL: " + connection_url);
    }
    catch (MalformedURLException e) {
        e.printStackTrace();
    }
}

Instantiated new URL: http://path

Some more:

Mozilla/5.0 (iPhone; CPU iPhone OS 6_1_3 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Version/6.0 Mobile/10B329 Safari/8536.25

Mozilla/5.0 (iPhone; CPU iPhone OS 6_1_4 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Version/6.0 Mobile/10B350 Safari/8536.25

String[] string=new String[60];
System.out.println(string.length);

it is initialization and getting the STRING LENGTH code in very simple way for beginners

rev4: A very eloquent comment by user Sammaron has noted that, perhaps, this answer previously confused top-down and bottom-up. While originally this answer (rev3) and other answers said that "bottom-up is memoization" ("assume the subproblems"), it may be the inverse (that is, "top-down" may be "assume the subproblems" and "bottom-up" may be "compose the subproblems"). Previously, I have read on memoization being a different kind of dynamic programming as opposed to a subtype of dynamic programming. I was quoting that viewpoint despite not subscribing to it. I have rewritten this answer to be agnostic of the terminology until proper references can be found in the literature. I have also converted this answer to a community wiki. Please prefer academic sources. List of references: {Web: 1,2} {Literature: 5}

Recap

Dynamic programming is all about ordering your computations in a way that avoids recalculating duplicate work. You have a main problem (the root of your tree of subproblems), and subproblems (subtrees). The subproblems typically repeat and overlap.

For example, consider your favorite example of Fibonnaci. This is the full tree of subproblems, if we did a naive recursive call:

TOP of the tree
fib(4)
 fib(3)...................... + fib(2)
  fib(2)......... + fib(1)       fib(1)........... + fib(0)
   fib(1) + fib(0)   fib(1)       fib(1)              fib(0)
    fib(1)   fib(0)
BOTTOM of the tree

(In some other rare problems, this tree could be infinite in some branches, representing non-termination, and thus the bottom of the tree may be infinitely large. Furthermore, in some problems you might not know what the full tree looks like ahead of time. Thus, you might need a strategy/algorithm to decide which subproblems to reveal.)

Memoization, Tabulation

There are at least two main techniques of dynamic programming which are not mutually exclusive:

• Memoization - This is a laissez-faire approach: You assume that you have already computed all subproblems and that you have no idea what the optimal evaluation order is. Typically, you would perform a recursive call (or some iterative equivalent) from the root, and either hope you will get close to the optimal evaluation order, or obtain a proof that you will help you arrive at the optimal evaluation order. You would ensure that the recursive call never recomputes a subproblem because you cache the results, and thus duplicate sub-trees are not recomputed.

  • example: If you are calculating the Fibonacci sequence fib(100), you would just call this, and it would call fib(100)=fib(99)+fib(98), which would call fib(99)=fib(98)+fib(97), ...etc..., which would call fib(2)=fib(1)+fib(0)=1+0=1. Then it would finally resolve fib(3)=fib(2)+fib(1), but it doesn't need to recalculate fib(2), because we cached it.
  • This starts at the top of the tree and evaluates the subproblems from the leaves/subtrees back up towards the root.

• Tabulation - You can also think of dynamic programming as a "table-filling" algorithm (though usually multidimensional, this 'table' may have non-Euclidean geometry in very rare cases*). This is like memoization but more active, and involves one additional step: You must pick, ahead of time, the exact order in which you will do your computations. This should not imply that the order must be static, but that you have much more flexibility than memoization.

  • example: If you are performing fibonacci, you might choose to calculate the numbers in this order: fib(2),fib(3),fib(4)... caching every value so you can compute the next ones more easily. You can also think of it as filling up a table (another form of caching).
  • I personally do not hear the word 'tabulation' a lot, but it's a very decent term. Some people consider this "dynamic programming".
  • Before running the algorithm, the programmer considers the whole tree, then writes an algorithm to evaluate the subproblems in a particular order towards the root, generally filling in a table.
  • *footnote: Sometimes the 'table' is not a rectangular table with grid-like connectivity, per se. Rather, it may have a more complicated structure, such as a tree, or a structure specific to the problem domain (e.g. cities within flying distance on a map), or even a trellis diagram, which, while grid-like, does not have a up-down-left-right connectivity structure, etc. For example, user3290797 linked a dynamic programming example of finding the maximum independent set in a tree, which corresponds to filling in the blanks in a tree.

(At it's most general, in a "dynamic programming" paradigm, I would say the programmer considers the whole tree, then writes an algorithm that implements a strategy for evaluating subproblems which can optimize whatever properties you want (usually a combination of time-complexity and space-complexity). Your strategy must start somewhere, with some particular subproblem, and perhaps may adapt itself based on the results of those evaluations. In the general sense of "dynamic programming", you might try to cache these subproblems, and more generally, try avoid revisiting subproblems with a subtle distinction perhaps being the case of graphs in various data structures. Very often, these data structures are at their core like arrays or tables. Solutions to subproblems can be thrown away if we don't need them anymore.)

[Previously, this answer made a statement about the top-down vs bottom-up terminology; there are clearly two main approaches called Memoization and Tabulation that may be in bijection with those terms (though not entirely). The general term most people use is still "Dynamic Programming" and some people say "Memoization" to refer to that particular subtype of "Dynamic Programming." This answer declines to say which is top-down and bottom-up until the community can find proper references in academic papers. Ultimately, it is important to understand the distinction rather than the terminology.]

Pros and cons

Ease of coding

Memoization is very easy to code (you can generally* write a "memoizer" annotation or wrapper function that automatically does it for you), and should be your first line of approach. The downside of tabulation is that you have to come up with an ordering.

*(this is actually only easy if you are writing the function yourself, and/or coding in an impure/non-functional programming language... for example if someone already wrote a precompiled fib function, it necessarily makes recursive calls to itself, and you can't magically memoize the function without ensuring those recursive calls call your new memoized function (and not the original unmemoized function))

Recursiveness

Note that both top-down and bottom-up can be implemented with recursion or iterative table-filling, though it may not be natural.

Practical concerns

With memoization, if the tree is very deep (e.g. fib(10^6)), you will run out of stack space, because each delayed computation must be put on the stack, and you will have 10^6 of them.

Optimality

Either approach may not be time-optimal if the order you happen (or try to) visit subproblems is not optimal, specifically if there is more than one way to calculate a subproblem (normally caching would resolve this, but it's theoretically possible that caching might not in some exotic cases). Memoization will usually add on your time-complexity to your space-complexity (e.g. with tabulation you have more liberty to throw away calculations, like using tabulation with Fib lets you use O(1) space, but memoization with Fib uses O(N) stack space).

Advanced optimizations

If you are also doing a extremely complicated problems, you might have no choice but to do tabulation (or at least take a more active role in steering the memoization where you want it to go). Also if you are in a situation where optimization is absolutely critical and you must optimize, tabulation will allow you to do optimizations which memoization would not otherwise let you do in a sane way. In my humble opinion, in normal software engineering, neither of these two cases ever come up, so I would just use memoization ("a function which caches its answers") unless something (such as stack space) makes tabulation necessary... though technically to avoid a stack blowout you can 1) increase the stack size limit in languages which allow it, or 2) eat a constant factor of extra work to virtualize your stack (ick), or 3) program in continuation-passing style, which in effect also virtualizes your stack (not sure the complexity of this, but basically you will effectively take the deferred call chain from the stack of size N and de-facto stick it in N successively nested thunk functions... though in some languages without tail-call optimization you may have to trampoline things to avoid a stack blowout).

More complicated examples

Here we list examples of particular interest, that are not just general DP problems, but interestingly distinguish memoization and tabulation. For example, one formulation might be much easier than the other, or there may be an optimization which basically requires tabulation:

• the algorithm to calculate edit-distance[4], interesting as a non-trivial example of a two-dimensional table-filling algorithm

You could also use strdup:

   The strdup() function returns a pointer to a new string which is a duplicate of the string  s.
   Memory for the new string is obtained with malloc(3), and can be freed with free(3).

For you example:

char *a = strdup("stack overflow");

If you are using this form of the branch command (with start point), it does not matter where your HEAD is.

What you are doing:

git checkout dev
git branch test 07aeec983bfc17c25f0b0a7c1d47da8e35df7af8

• First, you set your HEAD to the branch dev,

• Second, you start a new branch on commit 07aeec98. There is no bb.txt at this commit (according to your github repo).

If you want to start a new branch at the location you have just checked out, you can either run branch with no start point:

git branch test

or as other have answered, branch and checkout there in one operation:

git checkout -b test

I think that you might be confused by that fact that 07aeec98 is part of the branch dev. It is true that this commit is an ancestor of dev, its changes are needed to reach the latest commit in dev. However, they are other commits that are needed to reach the latest dev, and these are not necessarily in the history of 07aeec98.

8480e8ae (where you added bb.txt) is for example not in the history of 07aeec98. If you branch from 07aeec98, you won't get the changes introduced by 8480e8ae.

In other words: if you merge branch A and branch B into branch C, then create a new branch on a commit of A, you won't get the changes introduced in B.

Same here, you had two parallel branches master and dev, which you merged in dev. Branching out from a commit of master (older than the merge) won't provide you with the changes of dev.

If you want to permanently integrate new changes from master into your feature branches, you should merge master into them and go on. This will create merge commits in your feature branches, though.

If you have not published your feature branches, you can also rebase them on the updated master: git rebase master featureA. Be prepared to solve possible conflicts.

If you want a workflow where you can work on feature branches free of merge commits and still integrate with newer changes in master, I recommend the following:

• base every new feature branch on a commit of master
• create a dev branch on a commit of master
• when you need to see how your feature branch integrates with new changes in master, merge both master and the feature branch into dev.

Do not commit into dev directly, use it only for merging other branches.

For example, if you are working on feature A and B:

a---b---c---d---e---f---g -master
    \       \
     \       \-x -featureB
      \
       \-j---k -featureA

Merge branches into a dev branch to check if they work well with the new master:

a---b---c---d---e---f---g -master
    \       \            \
     \       \            \--x'---k' -dev
      \       \             /    /   
       \       \-x----------    /    -featureB
        \                      /
         \-j---k--------------- -featureA

You can continue working on your feature branches, and keep merging in new changes from both master and feature branches into dev regularly.

a---b---c---d---e---f---g---h---i----- -master
    \       \            \            \
     \       \            \--x'---k'---i'---l' -dev
      \       \             /    /         /
       \       \-x----------    /         /  -featureB
        \                      /         /  
         \-j---k-----------------l------ -featureA

When it is time to integrate the new features, merge the feature branches (not dev!) into master.

It's worth noting that there are libraries for most languages that do this for you, often built into the standard library. And those libraries are likely to get updated a lot more often than code that you copied off a Stack Overflow answer four years ago and forgot about. And of course they'll also generally parse the address into some usable form, rather than just giving you a match with a bunch of groups.

For example, detecting and parsing IPv4 in (POSIX) C:

#include <arpa/inet.h>
#include <stdio.h>

int main(int argc, char *argv[]) {
  for (int i=1; i!=argc; ++i) {
    struct in_addr addr = {0};
    printf("%s: ", argv[i]);
    if (inet_pton(AF_INET, argv[i], &addr) != 1)
      printf("invalid\n");
    else
      printf("%u\n", addr.s_addr);
  }
  return 0;
}

Obviously, such functions won't work if you're trying to, e.g., find all valid addresses in a chat message—but even there, it may be easier to use a simple but overzealous regex to find potential matches, and then use the library to parse them.

For example, in Python:

>>> import ipaddress
>>> import re
>>> msg = "My address is 192.168.0.42; 192.168.0.420 is not an address"
>>> for maybeip in re.findall(r'\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}', msg):
...     try:
...         print(ipaddress.ip_address(maybeip))
...     except ValueError:
...         pass

Christian's answer works well and shows how you can loop through each hash table item using the GetEnumerator method. You can also loop through using the keys property. Here is an example how:

$hash = @{
    a = 1
    b = 2
    c = 3
}
$hash.Keys | % { "key = $_ , value = " + $hash.Item($_) }

Output:

key = c , value = 3
key = a , value = 1
key = b , value = 2

Java 7 Time API

    DateTimeFormatter df = DateTimeFormatter.ofPattern("HH:mm");

    LocalTime lt = LocalTime.parse("14:10");
    System.out.println(df.format(lt.plusMinutes(10)));

a simple line , after that you can see also a doted line 

import java.awt.*;

import javax.swing.*;

import java.awt.Graphics.*;

import java.awt.Graphics2D.*;

import javax.swing.JFrame;

import javax.swing.JPanel;

import java.awt.BasicStroke;

import java.awt.Event.*;

import java.awt.Component.*;

import javax.swing.SwingUtilities;


/**
 *
 * @author junaid
 */
public class JunaidLine extends JPanel{


//private Graphics Graphics;

private void doDrawing(Graphics g){

Graphics2D g2d=(Graphics2D) g;

float[] dash1 = {2f,0f,2f};

g2d.drawLine(20, 40, 250, 40);

BasicStroke bs1 = new BasicStroke(1,BasicStroke.CAP_BUTT,

                    BasicStroke.JOIN_ROUND,1.0f,dash1,2f);

g2d.setStroke(bs1);

g2d.drawLine(20, 80, 250, 80);

    }

@Override

public void paintComponent(Graphics g){

super.paintComponent( g);

doDrawing(g);

}


}

class BasicStrokes extends JFrame{

public  BasicStrokes(){

initUI();

}

private void initUI(){

setTitle("line");

setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);

add(new JunaidLine());

setSize(280,270);

setLocationRelativeTo(null);

}

/**

* @param args the command line arguments

*/

public static void main(String[] args) {


SwingUtilities.invokeLater(new Runnable(){   

@Override

public void run(){

BasicStrokes bs = new BasicStrokes();

bs.setVisible(true);

}                

});

}


}

php's email() function hands the email over to a underlying mail transfer agent which is usually postfix on linux systems

so the preferred method on linux is to configure your postfix to use a relayhost, which is done by a line of

relayhost = smtp.example.com

in /etc/postfix/main.cf

however in the OP's scenario I somehow suspect that it's a job that his hosting team should have done

Be very, very aware of this problem that can occur when using utf8_general_ci.

MySQL will not distinguish between some characters in select statements, if the utf8_general_ci collation is used. This can lead to very nasty bugs - especially for example, where usernames are involved. Depending on the implementation that uses the database tables, this problem could allow malicious users to create a username matching an administrator account.

This problem exposes itself at the very least in early 5.x versions - I'm not sure if this behaviour as changed later.

I'm no DBA, but to avoid this problem, I always go with utf8-bin instead of a case-insensitive one.

The script below describes the problem by example.

-- first, create a sandbox to play in
CREATE DATABASE `sandbox`;
use `sandbox`;

-- next, make sure that your client connection is of the same 
-- character/collate type as the one we're going to test next:
charset utf8 collate utf8_general_ci

-- now, create the table and fill it with values
CREATE TABLE `test` (`key` VARCHAR(16), `value` VARCHAR(16) )
    CHARACTER SET utf8 COLLATE utf8_general_ci;

INSERT INTO `test` VALUES ('Key ONE', 'value'), ('Key TWO', 'valúe');

-- (verify)
SELECT * FROM `test`;

-- now, expose the problem/bug:
SELECT * FROM test WHERE `value` = 'value';

--
-- Note that we get BOTH keys here! MySQLs UTF8 collates that are 
-- case insensitive (ending with _ci) do not distinguish between 
-- both values!
--
-- collate 'utf8_bin' doesn't have this problem, as I'll show next:
--

-- first, reset the client connection charset/collate type
charset utf8 collate utf8_bin

-- next, convert the values that we've previously inserted in the table
ALTER TABLE `test` CONVERT TO CHARACTER SET utf8 COLLATE utf8_bin;

-- now, re-check for the bug
SELECT * FROM test WHERE `value` = 'value';

--
-- Note that we get just one key now, as you'd expect.
--
-- This problem appears to be specific to utf8. Next, I'll try to 
-- do the same with the 'latin1' charset:
--

-- first, reset the client connection charset/collate type
charset latin1 collate latin1_general_ci

-- next, convert the values that we've previously inserted
-- in the table
ALTER TABLE `test` CONVERT TO CHARACTER SET latin1 COLLATE latin1_general_ci;

-- now, re-check for the bug
SELECT * FROM test WHERE `value` = 'value';

--
-- Again, only one key is returned (expected). This shows 
-- that the problem with utf8/utf8_generic_ci isn't present 
-- in latin1/latin1_general_ci
--
-- To complete the example, I'll check with the binary collate
-- of latin1 as well:

-- first, reset the client connection charset/collate type
charset latin1 collate latin1_bin

-- next, convert the values that we've previously inserted in the table
ALTER TABLE `test` CONVERT TO CHARACTER SET latin1 COLLATE latin1_bin;

-- now, re-check for the bug
SELECT * FROM test WHERE `value` = 'value';

--
-- Again, only one key is returned (expected).
--
-- Finally, I'll re-introduce the problem in the exact same 
-- way (for any sceptics out there):

-- first, reset the client connection charset/collate type
charset utf8 collate utf8_generic_ci

-- next, convert the values that we've previously inserted in the table
ALTER TABLE `test` CONVERT TO CHARACTER SET utf8 COLLATE utf8_general_ci;

-- now, re-check for the problem/bug
SELECT * FROM test WHERE `value` = 'value';

--
-- Two keys.
--

DROP DATABASE sandbox;

getElementById will return false if the element was not found in the DOM.

var el = document.getElementById("customx");
if (el !== null && el.value === "")
{
  //The element was found and the value is empty.
}

You could directly inject the values into JavaScript:

//View.cshtml
<script type="text/javascript">
    var arrayOfArrays = JSON.parse('@Html.Raw(Model.Addresses)');
</script>

See JSON.parse, Html.Raw

Alternatively you can get the values via Ajax:

public ActionResult GetValues()
{
    // logic
    // Edit you don't need to serialize it just return the object

    return Json(new { Addresses: lAddressGeocodeModel });
}

<script type="text/javascript">
$(function() {
    $.ajax({
        type: 'POST',
        url: '@Url.Action("GetValues")',
        success: function(result) {
            // do something with result
        }
    });
});
</script>

See jQuery.ajax

Chain the results:

import itertools as it, glob

def multiple_file_types(*patterns):
    return it.chain.from_iterable(glob.iglob(pattern) for pattern in patterns)

Then:

for filename in multiple_file_types("*.txt", "*.sql", "*.log"):
    # do stuff

Here if you are referring to my previous answers Here is an Update. 1. Compile would be removed from the dependencies after 2018.

a new version build Gradle is available.

Use the above-noted stuff it will help you to resolve the errors. It is needed for the developers who are working after March 2018. Also, maven update might be needed. All above answers will not work on the Android Studio 3.1. Hence Above code block is needed to be changed if you are using 3.1. See also I replaced compile by implementation.

I might be very late but encoutered this problem sometime before and saw this link. Thanks . Please check this shall work.

Goto Create menu -> Section--> Copy email to be inserted

One possible explanation is a database trigger that fires for each DROP TABLE statement. To find the trigger, query the _TRIGGERS dictionary views:

select * from all_triggers
where trigger_type in ('AFTER EVENT', 'BEFORE EVENT')

disable any suspicious trigger with

   alter trigger <trigger_name> disable;

and try re-running your DROP TABLE statement

Even user has got answer and @Michael - sqlbot has covered mostly points very well in his post but one point is missing, so just trying to cover it.

If you want to provide read permission to a simple user (Not admin kind of)-

GRANT SELECT, EXECUTE ON DB_NAME.* TO 'user'@'localhost' IDENTIFIED BY 'PASSWORD';

Note: EXECUTE is required here, so that user can read data if there is a stored procedure which produce a report (have few select statements).

Replace localhost with specific IP from which user will connect to DB.

Additional Read Permissions are-

• SHOW VIEW : If you want to show view schema.
• REPLICATION CLIENT : If user need to check replication/slave status. But need to give permission on all DB.
• PROCESS : If user need to check running process. Will work with all DB only.

R has gotten to the point where the OS cannot allocate it another 75.1Mb chunk of RAM. That is the size of memory chunk required to do the next sub-operation. It is not a statement about the amount of contiguous RAM required to complete the entire process. By this point, all your available RAM is exhausted but you need more memory to continue and the OS is unable to make more RAM available to R.

Potential solutions to this are manifold. The obvious one is get hold of a 64-bit machine with more RAM. I forget the details but IIRC on 32-bit Windows, any single process can only use a limited amount of RAM (2GB?) and regardless Windows will retain a chunk of memory for itself, so the RAM available to R will be somewhat less than the 3.4Gb you have. On 64-bit Windows R will be able to use more RAM and the maximum amount of RAM you can fit/install will be increased.

If that is not possible, then consider an alternative approach; perhaps do your simulations in batches with the n per batch much smaller than N. That way you can draw a much smaller number of simulations, do whatever you wanted, collect results, then repeat this process until you have done sufficient simulations. You don't show what N is, but I suspect it is big, so try smaller N a number of times to give you N over-all.

getrusage() can help you in determining the usage of current process or its child

Update: I can't remember an API. But all details will be in /proc/PID/stat, so if we could parse it, we can get the percentage.

EDIT: Since CPU % is not straight forward to calculate, You could use sampling kind of stuff here. Read ctime and utime for a PID at a point in time and read the same values again after 1 sec. Find the difference and divide by hundred. You will get utilization for that process for past one second.

(might get more complex if there are many processors)

The default is atomic, this means it does cost you performance whenever you use the property, but it is thread safe. What Objective-C does, is set a lock, so only the actual thread may access the variable, as long as the setter/getter is executed.

Example with MRC of a property with an ivar _internal:

[_internal lock]; //lock
id result = [[value retain] autorelease];
[_internal unlock];
return result;

So these last two are the same:

@property(atomic, retain) UITextField *userName;

@property(retain) UITextField *userName; // defaults to atomic

On the other hand does nonatomic add nothing to your code. So it is only thread safe if you code security mechanism yourself.

@property(nonatomic, retain) UITextField *userName;

The keywords doesn't have to be written as first property attribute at all.

Don't forget, this doesn't mean that the property as a whole is thread-safe. Only the method call of the setter/getter is. But if you use a setter and after that a getter at the same time with 2 different threads, it could be broken too!

If u r using SQLite3 beware:

It takes only 't' or 'f'. Not 1 or 0. Not TRUE OR FALSE.

Just learned the hard way.

You down with OOP?

#!/usr/bin/env python


import smtplib

class Gmail(object):
    def __init__(self, email, password):
        self.email = email
        self.password = password
        self.server = 'smtp.gmail.com'
        self.port = 587
        session = smtplib.SMTP(self.server, self.port)        
        session.ehlo()
        session.starttls()
        session.ehlo
        session.login(self.email, self.password)
        self.session = session

    def send_message(self, subject, body):
        ''' This must be removed '''
        headers = [
            "From: " + self.email,
            "Subject: " + subject,
            "To: " + self.email,
            "MIME-Version: 1.0",
           "Content-Type: text/html"]
        headers = "\r\n".join(headers)
        self.session.sendmail(
            self.email,
            self.email,
            headers + "\r\n\r\n" + body)


gm = Gmail('Your Email', 'Password')

gm.send_message('Subject', 'Message')

I had to restart the browser after changing the ip address (laptop wireless DHCP) which was my "cross-host" I was referring to in my web app, which resolved the issue.

Also make sure all the cors headers being added by your browser/host are accepted/allowed by including then in the cors.allowed.headers

You can delete it in the terminal via:

jupyter kernelspec uninstall yourKernel

where yourKernel is the name of the kernel you want to delete.

A slight extension to the answer given, so, hopefully useful to the asker and anyone else looking.

You can also SELECT the values you want to delete. But watch out for the Error 1093 - You can't specify the target table for update in FROM clause.

DELETE FROM
    orders_products_history
WHERE
    (branchID, action) IN (
    SELECT
        branchID,
        action
    FROM
        (
        SELECT
            branchID,
            action
        FROM
            orders_products_history
        GROUP BY
            branchID,
            action
        HAVING
            COUNT(*) > 10000
        ) a
    );

I wanted to delete all history records where the number of history records for a single action/branch exceed 10,000. And thanks to this question and chosen answer, I can.

Hope this is of use.

Richard.

For bootstrap 4

        <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css" integrity="sha384-9gVQ4dYFwwWSjIDZnLEWnxCjeSWFphJiwGPXr1jddIhOegiu1FwO5qRGvFXOdJZ4" crossorigin="anonymous">

            <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
            <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.0/umd/popper.min.js" integrity="sha384-cs/chFZiN24E4KMATLdqdvsezGxaGsi4hLGOzlXwp5UZB1LY//20VyM2taTB4QvJ" crossorigin="anonymous"></script>
            <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.0/js/bootstrap.min.js" integrity="sha384-uefMccjFJAIv6A+rW+L4AHf99KvxDjWSu1z9VI8SKNVmz4sk7buKt/6v9KI65qnm" crossorigin="anonymous"></script>
        <link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet">
        <form class="form-inline my-2 my-lg-0">
                        <div class="input-group">
                            <input class="form-control" type="search" placeholder="Search">
                            <div class="input-group-append">
                                <div class="input-group-text"><i class="fa fa-search"></i></div>
                            </div>
                        </div>
                    </form>

Demo

The main difference is when compiled in debug mode, pdb files are also created which allow debugging (so you can step through the code when its running). This however means that the code isn't optimized as much.

This is worked for me

scroll_view.smoothScrollTo(0,0); // scroll to top of screen

check the command : NA!=NA : you'll get the result NA, hence the error message.

You have to use the function is.na for your ifstatement to work (in general, it is always better to use this function to check for NA values) :

comments = c("no","yes",NA)
for (l in 1:length(comments)) {
    if (!is.na(comments[l])) print(comments[l])
}
[1] "no"
[1] "yes"

In order to better understand [] and new Array():

> []
  []
> new Array()
  []
> [] == []
  false
> [] === []
  false
> new Array() == new Array()
  false
> new Array() === new Array()
  false
> typeof ([])
  "object"
> typeof (new Array())
  "object"
> [] === new Array()
  false
> [] == new Array()
  false

The above result is from Google Chrome console on Windows 7.

Yet another reason (not for this case, but maybe it'll save some nerves for someone) is that in PHP 5.5 short open tags <? phpinfo(); ?> are disabled by default.

So the PHP interpreter would process code within short tags as plain text. In previous versions PHP this feature was enable by default. So the new behaviour can be a little bit mysterious.

If you have not yet commit you last changes before vacation. - Command line to the project folder. - Type 'svn diff'

If you already commit you last changes before vacation.

• Browse to your project.
• Find a link "View log". Click it.
• Select top two revision and Click "Compare Revisions" button in the bottom. This will show you the different between the latest and the previous revision.

your http service file:

import { Injectable } from "@angular/core";
import { ActivatedRoute, Router } from '@angular/router';
import { Http, Headers, Response, Request, RequestMethod, URLSearchParams, RequestOptions } from "@angular/http";
import {Observable} from 'rxjs/Rx';
import { Constants } from './constants';
declare var $: any;

@Injectable()
export class HttpClient {
  requestUrl: string;
  responseData: any;
  handleError: any;

  constructor(private router: Router, 
  private http: Http, 
  private constants: Constants, 
  ) {
    this.http = http;
  }

  postWithFile (url: string, postData: any, files: File[]) {

    let headers = new Headers();
    let formData:FormData = new FormData();
    formData.append('files', files[0], files[0].name);
    // For multiple files
    // for (let i = 0; i < files.length; i++) {
    //     formData.append(`files[]`, files[i], files[i].name);
    // }

    if(postData !=="" && postData !== undefined && postData !==null){
      for (var property in postData) {
          if (postData.hasOwnProperty(property)) {
              formData.append(property, postData[property]);
          }
      }
    }
    var returnReponse = new Promise((resolve, reject) => {
      this.http.post(this.constants.root_dir + url, formData, {
        headers: headers
      }).subscribe(
          res => {
            this.responseData = res.json();
            resolve(this.responseData);
          },
          error => {
            this.router.navigate(['/login']);
            reject(error);
          }
      );
    });
    return returnReponse;
  }
}

call your function (Component file):

onChange(event) {
    let file = event.srcElement.files;
    let postData = {field1:"field1", field2:"field2"}; // Put your form data variable. This is only example.
    this._service.postWithFile(this.baseUrl + "add-update",postData,file).then(result => {
        console.log(result);
    });
}

your html code:

<input type="file" class="form-control" name="documents" (change)="onChange($event)" [(ngModel)]="stock.documents" #documents="ngModel">

@eric answer did the trick for me, you need to accept terms in the command you are setting i.e

"Cookie: oraclelicense=accept-securebackup-cookie"

so your final command looks thus

wget -c --header "Cookie: oraclelicense=accept-securebackup-cookie" http://download.oracle.com/otn-pub/java/jdk/8u131-b11/d54c1d3a095b4ff2b6607d096fa80163/jdk-8u131-linux-x64.tar.gz

You can decide to update the version by changing 8u131 to 8uXXX. so long it is available in the repo.

foreach (Control field in container.Controls)
            {
                if (field is TextBox)
                    ((TextBox)field).Clear();
                else if (field is ComboBox)
                    ((ComboBox)field).SelectedIndex=0;
                else
                    dgView.DataSource = null;
                    ClearAllText(field);
            }

You can use clone() method to create a copy..

$('#foo1').html( $('#foo2 > div').clone())?;

FIDDLE HERE

If you are doing these same assignments a lot in your program and want a shortcut, the most straightforward solution might be to just add a function

static inline void set_coordinates(
        GLfloat coordinates[static 8],
        GLfloat c0, GLfloat c1, GLfloat c2, GLfloat c3,
        GLfloat c4, GLfloat c5, GLfloat c6, GLfloat c7)
{
    coordinates[0] = c0;
    coordinates[1] = c1;
    coordinates[2] = c2;
    coordinates[3] = c3;
    coordinates[4] = c4;
    coordinates[5] = c5;
    coordinates[6] = c6;
    coordinates[7] = c7;
}

and then simply call

GLfloat coordinates[8];
// ...
set_coordinates(coordinates, 1.0f, 0.0f, 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 0.0f);

Bootstrap 3 now has Responsive tables out of the box. Hooray! :)

You can check it here: https://getbootstrap.com/docs/3.3/css/#tables-responsive

Add a <div class="table-responsive"> surrounding your table and you should be good to go:

<div class="table-responsive">
  <table class="table">
    ...
  </table>
</div>

To make it work on all layouts you can do this:

.table-responsive
{
    overflow-x: auto;
}

The java instanceof operator is used to test whether the object is an instance of the specified type (class or subclass or interface).

The instanceof in java is also known as type comparison operator as it compares the instance with type. It returns either true or false. If we apply the instanceof operator with any variable that has null value, it returns false.

From JDK 14+ which includes JEP 305 we can also do "Pattern Matching" for instanceof

Patterns basically test that a value has a certain type, and can extract information from the value when it has the matching type. Pattern matching allows a more clear and efficient expression of common logic in a system, namely the conditional removal of components from objects.

Before Java 14

if (obj instanceof String) {
    String str = (String) obj; // need to declare and cast again the object
    .. str.contains(..) ..
}else{
     str = ....
}

Java 14 enhancements

if (!(obj instanceof String str)) {
    .. str.contains(..) .. // no need to declare str object again with casting
} else {
    .. str....
}

We can also combine the type check and other conditions together

if (obj instanceof String str && str.length() > 4) {.. str.contains(..) ..}

The use of pattern matching in instanceof should reduce the overall number of explicit casts in Java programs.

PS: instanceOf will only match when the object is not null, then only it can be assigned to str.

My problem was when my fellow developer added a pod in the project and then i pull the project using github then the error occurred. I ran pod install and it updated the pods with new library which was added by my fellow developer. hope it helps.

I want to point to the way Wordpress handles this:

define( 'ABSPATH', dirname( __FILE__ ) . '/' );

As Wordpress is very heavy used all over the web and also works fine locally I have much trust in this method. You can find this definition on the bottom of your wordpress wp-config.php file

Meaning the 2nd parameter('master') of the "git push" command -

$ git push origin master

can be made clear by initiating "push" command from 'news-item' branch. It caused local "master" branch to be pushed to the remote 'master' branch. For more information refer

https://git-scm.com/docs/git-push

where <refspec> in

[<repository> [<refspec>…?]

is written to mean "specify what destination ref to update with what source object."

For your reference, here is a screen capture how I verified this statement.

preparedStatement.setNull(index, java.sql.Types.NULL);

that should work for any type. Though in some cases failure happens on the server-side, like: for SQL:

COALESCE(?, CURRENT_TIMESTAMP)

Oracle 18XE fails with the wrong type: expected DATE, got STRING -- that is a perfectly valid failure;

Bottom line: it is good to know the type if you call .setNull()

O(1) does not necessarily mean "quickly". It means that the time it takes is constant, and not based on the size of the input to the function. Constant could be fast or slow. O(n) means that the time the function takes will change in direct proportion to the size of the input to the function, denoted by n. Again, it could be fast or slow, but it will get slower as the size of n increases.

There is a bug filed for Eclipse:

https://bugs.eclipse.org/bugs/show_bug.cgi?id=385680

You could try restarting Eclipse, it helped the original poster of the issue there.

I've ended up with the following working code:

RewriteEngine on 
RewriteCond %{THE_REQUEST} /([^.]+)\.php [NC]
RewriteRule ^ /%1 [NC,L,R]

RewriteCond %{REQUEST_FILENAME}.php -f
RewriteRule ^ %{REQUEST_URI}.php [NC,L]

Here is an example of copying text file with fs.readFile and fs.writeFile:

var fs = require('fs');

var copyFile = function(source, destination, next) {
  // we should read source file first
  fs.readFile(source, function(err, data) {
    if (err) return next(err); // error occurred
    // now we can write data to destination file
    fs.writeFile(destination, data, next);
  });
};

And that's an example of using copyFile function:

copyFile('foo.txt', 'bar.txt', function(err) {
  if (err) {
    // either fs.readFile or fs.writeFile returned an error
    console.log(err.stack || err);
  } else {
    console.log('Success!');
  }
});

Common node.js pattern suggests that the first argument of the callback function is an error. You should use this pattern because all control flow modules rely on it:

next(new Error('I cannot do it!')); // error

next(null, results); // no error occurred, return result

You can transform array of strings to array of numbers in one line:

const arrayOfNumbers = arrayOfStrings.map(e => +e);

Use the basename command:

basename /home/user/new/*.txt

Strings are immutable so you can't insert characters into an existing string. You have to create a new string. You can use string concatenation to do what you want:

yourstring = "L" + yourstring + "LL"

Note that you can also create a string with n Ls by using multiplication:

m = 1
n = 2
yourstring = ("L" * m) + yourstring + ("L" * n)

The simplest way would be to first replace infs to NaN:

df.replace([np.inf, -np.inf], np.nan)

and then use the dropna:

df.replace([np.inf, -np.inf], np.nan).dropna(subset=["col1", "col2"], how="all")

For example:

In [11]: df = pd.DataFrame([1, 2, np.inf, -np.inf])

In [12]: df.replace([np.inf, -np.inf], np.nan)
Out[12]:
    0
0   1
1   2
2 NaN
3 NaN

The same method would work for a Series.

Check if it matches this regex:

'(\.pdf$|\.doc$|\.xls$)'

Note: if you extensions are not at the end of the url, remove the $ characters, but it does weaken it slightly

The base R function to perform capitalization is toupper(x). From the help file for ?toupper there is this function that does what you need:

simpleCap <- function(x) {
  s <- strsplit(x, " ")[[1]]
  paste(toupper(substring(s, 1,1)), substring(s, 2),
      sep="", collapse=" ")
}

name <- c("zip code", "state", "final count")

sapply(name, simpleCap)

     zip code         state   final count 
   "Zip Code"       "State" "Final Count" 

Edit This works for any string, regardless of word count:

simpleCap("I like pizza a lot")
[1] "I Like Pizza A Lot"

$xml="l" . PHP_EOL;
$xml.="vv";
echo $xml;

Will echo:

l
vv

Documentation on PHP_EOL.

All you need to do is run

pip install /opt/mypackage

and pip will search /opt/mypackage for a setup.py, build a wheel, then install it.

The problem with using the -e flag for pip install as suggested in the comments and this answer is that this requires that the original source directory stay in place for as long as you want to use the module. It's great if you're a developer working on the source, but if you're just trying to install a package, it's the wrong choice.

Alternatively, you don't even need to download the repo from Github at all. pip supports installing directly from git repos using a variety of protocols including HTTP, HTTPS, and SSH, among others. See the docs I linked to for examples.

Try this backgroundColor: '#00000000' it will set background color to transparent, it follows #rrggbbaa hex codes

Does your upload die at the very end? 99% before crashing? Client body and buffers are key because nginx must buffer incoming data. The body configs (data of the request body) specify how nginx handles the bulk flow of binary data from multi-part-form clients into your app's logic.

The clean setting frees up memory and consumption limits by instructing nginx to store incoming buffer in a file and then clean this file later from disk by deleting it.

Set body_in_file_only to clean and adjust buffers for the client_max_body_size. The original question's config already had sendfile on, increase timeouts too. I use the settings below to fix this, appropriate across your local config, server, & http contexts.

client_body_in_file_only clean;
client_body_buffer_size 32K;

client_max_body_size 300M;

sendfile on;
send_timeout 300s;

Add this code to your page:

<script type="text/javascript">
$(document).ready(function() {
   $("input[type='submit']").click(function(){
      $(this).css('background-color','red');
    });
});
</script>

As @kirbyfan64sos notes in a comment, /home is NOT your home directory (a.k.a. home folder):

The fact that /home is an absolute, literal path that has no user-specific component provides a clue.

While /home happens to be the parent directory of all user-specific home directories on Linux-based systems, you shouldn't even rely on that, given that this differs across platforms: for instance, the equivalent directory on macOS is /Users.

What all Unix platforms DO have in common are the following ways to navigate to / refer to your home directory:

• Using cd with NO argument changes to your home dir., i.e., makes your home dir. the working directory.
  • e.g.: cd # changes to home dir; e.g., '/home/jdoe'

• Unquoted ~ by itself / unquoted ~/ at the start of a path string represents your home dir. / a path starting at your home dir.; this is referred to as tilde expansion (see man bash)
  • e.g.: echo ~ # outputs, e.g., '/home/jdoe'

• $HOME - as part of either unquoted or preferably a double-quoted string - refers to your home dir. HOME is a predefined, user-specific environment variable:
  • e.g.: cd "$HOME/tmp" # changes to your personal folder for temp. files

Thus, to create the desired folder, you could use:

mkdir "$HOME/bin"  # same as: mkdir ~/bin

Note that most locations outside your home dir. require superuser (root user) privileges in order to create files or directories - that's why you ran into the Permission denied error.

In this context, "attribute" simply means a data member of an object.

Use the getResourceAsStream() method on the ServletContext object, e.g.

servletContext.getResourceAsStream("/WEB-INF/myfile");

How you get a reference to the ServletContext depends on your application... do you want to do it from a Servlet or from a JSP?

EDITED: If you're inside a Servlet object, then call getServletContext(). If you're in JSP, use the predefined variable application.

This seems to be the cleanest way to do

if (foo === 1) {

} else if (bar === 99) {

} else if (foo === 2) {

} else {

}

in the template:

<ng-container *ngIf="foo === 1; else elseif1">foo === 1</ng-container>
<ng-template #elseif1>
    <ng-container *ngIf="bar === 99; else elseif2">bar === 99</ng-container>
</ng-template>
<ng-template #elseif2>
    <ng-container *ngIf="foo === 2; else else1">foo === 2</ng-container>
</ng-template>
<ng-template #else1>else</ng-template>

Notice that it works like a proper else if statement should when the conditions involve different variables (only 1 case is true at a time). Some of the other answers don't work right in such a case.

aside: gosh angular, that's some really ugly else if template code...

Use max-width on the images too. Change:

.erb-image-wrapper img{
    width:100% !important;
    height:100% !important;
    display:block;
}

to...

.erb-image-wrapper img{
    max-width:100% !important;
    max-height:100% !important;
    display:block;
}

The other answer is very complete, but here is a rule of thumb:

• call is blocking:

  call('notepad.exe')
  print('hello')  # only executed when notepad is closed
  

• Popen is non-blocking:

  Popen('notepad.exe')
  print('hello')  # immediately executed
  

You can use this -

function sleep(milliseconds) {
    var start = new Date().getTime();
    for (var i = 0; i < 1e7; i++) {
        if ((new Date().getTime() - start) > milliseconds){
            break;
        }
    }
}

You can use .eq() and .after() like this:

$('#my_table > tbody > tr').eq(i-1).after(html);

The indexes are 0 based, so to be the 4th row, you need i-1, since .eq(3) would be the 4th row, you need to go back to the 3rd row (2) and insert .after() that.

As strager suggests, look into using cURL. You may also be interested in setting CURLOPT_NOBODY with curl_setopt to skip downloading the whole page (you just want the headers).

The condition i==j+1 will not be true for i==2. This can be fixed by a couple of changes to the inner loop:

#include <stdio.h>
int main(void)
{
 for (int i=2; i<100; i++)
 {
  for (int j=2; j<=i; j++)   // Changed upper bound
  {
    if (i == j)  // Changed condition and reversed order of if:s
      printf("%d\n",i);
    else if (i%j == 0)
      break;
  }
 }
}

Don't know if this is relevant to XAML, but in my simple Windows app I created the binding manually and added a Format event handler.

public FormMain() {
  InitializeComponent();

  Binding argBinding = new Binding("Enabled", uxCheckBoxArgsNull, "Checked", false, DataSourceUpdateMode.OnPropertyChanged);
  argBinding.Format += new ConvertEventHandler(Binding_Format_BooleanInverse);
  uxTextBoxArgs.DataBindings.Add(argBinding);
}

void Binding_Format_BooleanInverse(object sender, ConvertEventArgs e) {
  bool boolValue = (bool)e.Value;
  e.Value = !boolValue;
}

Try

alter table company drop constraint Company_CountryID_FK


alter table company drop column CountryID

Following up on the comment ron posted, here is the detailed solution. Let's say you have registered a repeating alarm with a pending intent like this:

Intent intent = new Intent("com.my.package.MY_UNIQUE_ACTION");
PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, 
                                      intent, PendingIntent.FLAG_UPDATE_CURRENT);
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
calendar.add(Calendar.MINUTE, 1);

AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), 1000 * 60, pendingIntent);

The way you would check to see if it is active is to:

boolean alarmUp = (PendingIntent.getBroadcast(context, 0, 
        new Intent("com.my.package.MY_UNIQUE_ACTION"), 
        PendingIntent.FLAG_NO_CREATE) != null);

if (alarmUp)
{
    Log.d("myTag", "Alarm is already active");
}

The key here is the FLAG_NO_CREATE which as described in the javadoc: if the described PendingIntent **does not** already exists, then simply return null (instead of creating a new one)

Just use percentage widths and fixed table layout:

<table>
<tr>
  <td>1</td>
  <td>2</td>
  <td>3</td>
</tr>
</table>

with

table { table-layout: fixed; }
td { width: 33%; }

Fixed table layout is important as otherwise the browser will adjust the widths as it sees fit if the contents don't fit ie the widths are otherwise a suggestion not a rule without fixed table layout.

Obviously, adjust the CSS to fit your circumstances, which usually means applying the styling only to a tables with a given class or possibly with a given ID.

andy's answer redone using split():

Url u= ...;
String[] pathparts= u.getPath().split("\\/");
String filename= pathparts[pathparts.length-1].split("\\.", 1)[0];

Even easier is just to add the following annotations to the top of your class:

[Serializable, XmlRoot("user")]
public partial class User
{
}

Thanks to PhilHibbs comment (on VBwhatnow's answer) I was finally able to find a solution that both reuses existing windows and avoids flashing a CMD-window at the user:

Dim path As String
path = CurrentProject.path & "\"
Shell "cmd /C start """" /max """ & path & """", vbHide

where 'path' is the folder you want to open.

(In this example I open the folder where the current workbook is saved.)

Pros:

• Avoids opening new explorer instances (only sets focus if window exists).
• The cmd-window is never visible thanks to vbHide.
• Relatively simple (does not need to reference win32 libraries).

Cons:

• Window maximization (or minimization) is mandatory.

Explanation:

At first I tried using only vbHide. This works nicely... unless there is already such a folder opened, in which case the existing folder window becomes hidden and disappears! You now have a ghost window floating around in memory and any subsequent attempt to open the folder after that will reuse the hidden window - seemingly having no effect.

In other words when the 'start'-command finds an existing window the specified vbAppWinStyle gets applied to both the CMD-window and the reused explorer window. (So luckily we can use this to un-hide our ghost-window by calling the same command again with a different vbAppWinStyle argument.)

However by specifying the /max or /min flag when calling 'start' it prevents the vbAppWinStyle set on the CMD window from being applied recursively. (Or overrides it? I don't know what the technical details are and I'm curious to know exactly what the chain of events is here.)

The previous answer is pretty good, but I also wanted to mention that there is a fixed layout equivalent for grids, you just need to write minmax(0, 1fr) instead of 1fr as your track size.

I always just add 86400 (seconds in a day):

$stop_date = date('Y-m-d H:i:s', strtotime("2009-09-30 20:24:00") + 86400);

echo 'date after adding 1 day: '.$stop_date; 

It's not the slickest way you could probably do it, but it works!

use:

$scope.users.length;

Instead of:

$scope.users.lenght;

And next time "spell-check" your code.

Reducing the image size before output results in something that looks sharper, in my case:

convert -density 300 a.pdf -resize 25% a.png

I had a problem like this when I deleted a folder (and sub-folders) and went to recreate them from scratch. You get this error from manually deleting and re-adding folders (whereas files seem to cope OK with this).

After some frustrating messing around, found I had to:
(using TortoiseSVN on Windows)

1. Move conflicting folders out of working copy (so that I don't lose my work-in-progress)
2. Do an svn update which added old files/folders back into working copy
3. svn delete folder
4. commit
5. Copy new folder back into working copy (ensuring you delete all the .svn folders inside)
6. commit

Unfortunately it (A) requires two commits, and (B) loses file revision history as it only tracks back to the recent re-add (unless someone can explain how to fix this). An alternative solution that works around these 2 issues is to skip steps 3 and 4, the only problem being that old/unnecessary files may still be present in your directory. You could delete these manually.

Would love to hear any additional insights others might have on this.

Simon.

[Update] OK, I had this same problem again just then, but the offending folder was NOT in the last commit, so an update didn't restore it. Instead I had to browse the repository and delete the offending folder. I could then add the folder back in and commit successfully.

You can use PowerPivot to work with files of up to 2GB, which will be enough for your needs.

My solution:

$defaultvalue = $options['data']->getMyField();
$builder->add('myField', 'number', array(
            'data' => !empty($defaultvalue) ? $options['data']->getMyField() : 0
        )) ;

You have the noclobber option set. The error looks like it's from csh, so you would do:

cat /dev/null >! file

If I'm wrong and you are using bash, you should do:

cat /dev/null >| file

in bash, you can also shorten that to:

>| file

I have figured out two solution to avoid these error 1)by adding protected $except = ['/yourroute'] possible disable csrf token inspection from defined root. 2)just comment \App\Http\Middleware\VerifyCsrfToken::class line in protected middleware group in kernel

Actually, wouldn't we want to do this?

import sys
sys.argv = ['abc.py','arg1', 'arg2']
execfile('abc.py')

This is the command to use to tell Gradle to upgrade the wrapper such that it will grab the distribution versions of libraries that includes source code:

./gradlew wrapper --gradle-version <version> --distribution-type all

Specifying the distribution-type with "all" will make sure Gradle downloads source files for use by your development environment.

Pros:

• IDEs will have immediate access to source code. For example, Intellij IDEA won't prompt you to update your build scripts to include the source distro (because this command already did that)

Cons:

• Longer/Bigger build process because it's downloading source code. This is a waste of time/space on a build or CI server where the source code is not necessary.

Please comment or provide another answer if you know of any command line option to tell Gradle not to download sources on a build server.

From the doc.

The webbrowser module provides a high-level interface to allow displaying Web-based documents to users. Under most circumstances, simply calling the open() function from this module will do the right thing.

You have to import the module and use open() function. This will open https://nabinkhadka.com.np in the browser.

To open in new tab:

import webbrowser
webbrowser.open('https://nabinkhadka.com.np', new = 2)

Also from the doc.

If new is 0, the url is opened in the same browser window if possible. If new is 1, a new browser window is opened if possible. If new is 2, a new browser page (“tab”) is opened if possible

So according to the value of new, you can either open page in same browser window or in new tab etc.

Also you can specify as which browser (chrome, firebox, etc.) to open. Use get() function for this.

The following simpler shell script worked for me.

#!/bin/bash
for i in  `psql -U $1  -qt -c  "select tablename from pg_tables where schemaname='$2'"`
do
psql -U $1 -c  "alter table $2.$i set schema $3"
done

Where input $1 - username (database) $2 = existing schema $3 = to new schema.

You can do something like,

RaisedButton.icon( elevation: 4.0,
                    icon: Image.asset('images/image_upload.png' ,width: 20,height: 20,) ,
                      color: Theme.of(context).primaryColor,
                    onPressed: getImage,
                    label: Text("Add Team Image",style: TextStyle(
                        color: Colors.white, fontSize: 16.0))
                  ),

UPDATE:

Since I was lazy, and didn't fully implement my solution, I searched around and found BlockComment for Xcode, a recently released plugin (June 2017). Don't bother with my solution, this plugin works beautifully, and I highly recommend it.

ORIGINAL ANSWER:

None of the above worked for me on Xcode 7 and 8, so I:

1. Created Automator service using AppleScript
2. Make sure "Output replaces selected text" is checked

3. Enter the following code:

   on run {input, parameters}
   return "/*\n" & (input as string) & "*/"
   end run
   

Now you can access that service through Xcode - Services menu, or by right clicking on the selected block of code you wish to comment, or giving it a shortcut under System Preferences.

if you want to read in lots of data and work on each line separately you could use something like this:

cat myFile | while read x ; do echo $x ; done

if you want to split the lines up into multiple words you can use multiple variables in place of x like this:

cat myFile | while read x y ; do echo $y $x ; done

alternatively:

while read x y ; do echo $y $x ; done < myFile

But as soon as you start to want to do anything really clever with this sort of thing you're better going for some scripting language like perl where you could try something like this:

perl -ane 'print "$F[0]\n"' < myFile

There's a fairly steep learning curve with perl (or I guess any of these languages) but you'll find it a lot easier in the long run if you want to do anything but the simplest of scripts. I'd recommend the Perl Cookbook and, of course, The Perl Programming Language by Larry Wall et al.

You don't need to use a type assertion, instead just use the %v format specifier with Sprintf:

hostAndPort := fmt.Sprintf("%v:%v", arguments["<host>"], arguments["<port>"])

Please check the below its working on my side in below code your handler will run after every 1 Second when you are on same activity

 HandlerThread handlerThread = new HandlerThread("HandlerThread");
                handlerThread.start();
                handler = new Handler(handlerThread.getLooper());
                runnable = new Runnable()
                {
                    @Override
                    public void run()
                    {

                            handler.postDelayed(this, 1000);
                        }
                };
                handler.postDelayed(runnable, 1000);

There are two ways I can think of to make this happen in a reusable way. One is to rename all of your columns with a prefix for the table they have come from. I have seen this many times, but I really don't like it. I find that it's redundant, causes a lot of typing, and you can always use aliases when you need to cover the case of a column name having an unclear origin.

The other way, which I would recommend you do in your situation if you are committed to seeing this through, is to create views for each table that alias the table names. Then you join against those views, rather than the tables. That way, you are free to use * if you wish, free to use the original tables with original column names if you wish, and it also makes writing any subsequent queries easier because you have already done the renaming work in the views.

Finally, I am not clear why you need to know which table each of the columns came from. Does this matter? Ultimately what matters is the data they contain. Whether UserID came from the User table or the UserQuestion table doesn't really matter. It matters, of course, when you need to update it, but at that point you should already know your schema well enough to determine that.

Serialization

Serialization is the process of converting an object or a set of objects graph into a stream, it is a byte array in the case of binary serialization

Uses of Serialization

1. To save the state of an object into a file, database etc. and use it latter.
2. To send an object from one process to another (App Domain) on the same machine and also send it over wire to a process running on another machine.
3. To create a clone of the original object as a backup while working on the main object.
4. A set of objects can easily be copied to the system’s clipboard and then pasted into the same or another application

Below are some useful custom attributes that are used during serialization of an object

[Serializable] -> It is used when we mark an object’s serializable [NonSerialized] -> It is used when we do not want to serialize an object’s field. [OnSerializing] -> It is used when we want to perform some action while serializing an object [OnSerialized] -> It is used when we want to perform some action after serialized an object into stream.

Below is the example of serialization

[Serializable]
    internal class DemoForSerializable
    {
        internal string Fname = string.Empty;
        internal string Lname = string.Empty;

        internal Stream SerializeToMS(DemoForSerializable demo)
        {
            DemoForSerializable objSer = new DemoForSerializable();
            MemoryStream ms = new MemoryStream();
            BinaryFormatter bf = new BinaryFormatter();
            bf.Serialize(ms, objSer);
            return ms;
        }

        [OnSerializing]
        private void OnSerializing(StreamingContext context) {
            Fname = "sheo";
            Lname = "Dayal";
        }
        [OnSerialized]
        private void OnSerialized(StreamingContext context)
        {
       // Do some work after serialized object
        }

    }

Here is the calling code

class Program
    {
        string fname = string.Empty;
        string Lname = string.Empty; 

       static void Main(string[] args)
        {
            DemoForSerializable demo = new DemoForSerializable();

            Stream ms = demo.SerializeToMS(demo);
            ms.Position = 0;

            DemoForSerializable demo1 = new BinaryFormatter().Deserialize(ms) as DemoForSerializable;

            Console.WriteLine(demo1.Fname);
            Console.WriteLine(demo1.Lname);
            Console.ReadLine();
        }

    }

You can use the Play Core Library In-app updates to tackle this. You can check for update availability and install them if available seamlessly.

In-app updates are not compatible with apps that use APK expansion files (.obb files). You can either go for flexible downloads or immediate updates which Google Play takes care of downloading and installing the update for you.

dependencies {
    implementation 'com.google.android.play:core:1.5.0'
    ...
}

Refer this answer https://stackoverflow.com/a/58212818/7579041

This error shows up when there is Kotlin Compilation Error.

Run the below command to find where there is Kotlin Compilation Error,

gradlew clean assembleDebug (for Windows)
./gradlew clean assembleDebug (for Linux and Mac)

It will show you the exact location on which line there is Kotlin Compilation Error.

There seems to be multiple modules to do that, some are deprecated.

This one looks active:
https://github.com/jshttp/basic-auth

Here's a use example:

// auth.js

var auth = require('basic-auth');

var admins = {
  '[email protected]': { password: 'pa$$w0rd!' },
};


module.exports = function(req, res, next) {

  var user = auth(req);
  if (!user || !admins[user.name] || admins[user.name].password !== user.pass) {
    res.set('WWW-Authenticate', 'Basic realm="example"');
    return res.status(401).send();
  }
  return next();
};




// app.js

var auth = require('./auth');
var express = require('express');

var app = express();

// ... some not authenticated middlewares

app.use(auth);

// ... some authenticated middlewares

Make sure you put the auth middleware in the correct place, any middleware before that will not be authenticated.

Try to sort items by creation time. Example below sorts files in a folder and gets first element which is latest.

import glob
import os

files_path = os.path.join(folder, '*')
files = sorted(
    glob.iglob(files_path), key=os.path.getctime, reverse=True) 
print files[0]

Just adding so you don't have to click-through:

curl --user name:password http://www.example.com

or if you're trying to do send authentication for OAuth 2:

curl -H "Authorization: OAuth <ACCESS_TOKEN>" http://www.example.com

You can use, which will be triggered when the window resizes.

$( window ).bind("resize", function(){
    // Change the width of the div
    $("#yourdiv").width( 600 );
});

If you want a DIV width as percentage of the screen, just use CSS width : 80%;.

The error occur mainly becuase the array isnt found. Just check if you have mapped to the correct array. Check the array name or declaration.

You seem to be looking for range():

>>> x1=11
>>> x2=16
>>> range(x1, x2+1)
[11, 12, 13, 14, 15, 16]
>>> list1 = range(x1, x2+1)
>>> list1
[11, 12, 13, 14, 15, 16]

For incrementing by 0.5 instead of 1, say:

>>> list2 = [x*0.5 for x in range(2*x1, 2*x2+1)]
>>> list2
[11.0, 11.5, 12.0, 12.5, 13.0, 13.5, 14.0, 14.5, 15.0, 15.5, 16.0]

Call the function in this way:

self.parse_file()

You also need to define your parse_file() function like this:

def parse_file(self):

The parse_file method has to be bound to an object upon calling it (because it's not a static method). This is done by calling the function on an instance of the object, in your case the instance is self.

Your original problem was wrong pattern symbol "h" which stands for the clock hour (range 1-12). In this case, the am-pm-information is missing. Better, use the pattern symbol "H" instead (hour of day in range 0-23). So the pattern should rather have been like:

uuuu-MM-dd'T'HH:mm:ss.SSSX (best pattern also suitable for strict mode)

Yes. Use the ternary operator.

condition ? true_expression : false_expression;

The PHP code is executed on the server, so your redirect is executed before the browser even sees the JavaScript.

You need to do the redirect in JavaScript too

$('.entry a:first').click(function()
{
    window.location.replace("http://www.google.com");
});

The below code worked for me.

import pandas

df = pandas.read_csv('somefile.txt')

df = df.fillna(0)

In my case I was using a JDK 8 client and the server was using insecure old ciphers. The server is Apache and I added this line to the Apache config:

SSLCipherSuite ALL:!ADH:RC4+RSA:+HIGH:!MEDIUM:!LOW:!SSLv2:!EXPORT

You should use a tool like this to verify your SSL configuration is currently secure: https://www.ssllabs.com/ssltest/analyze.html

Simple Way to Customize the Toast,

private void MsgDisplay(String Msg, int Size, int Grav){
    Toast toast = Toast.makeText(this, Msg, Toast.LENGTH_LONG);
    TextView v = (TextView) toast.getView().findViewById(android.R.id.message);
    v.setTextColor(Color.rgb(241, 196, 15));
    v.setTextSize(Size);
    v.setGravity(Gravity.CENTER);
    v.setShadowLayer(1.5f, -1, 1, Color.BLACK);
    if(Grav == 1){
        toast.setGravity(Gravity.BOTTOM, 0, 120);
    }else{
        toast.setGravity(Gravity.BOTTOM, 0, 10);
    }
    toast.show();
}

<a href="#Foo" onclick="return runMyFunction();">Do it!</a>

and

function runMyFunction() {
  //code
  return true;
}

This way you will have youf function executed AND you will follow the link AND you will follow the link exactly after your function was successfully run.

I've developed my own MySQL escape method in Java (if useful for anyone).

See class code below.

Warning: wrong if NO_BACKSLASH_ESCAPES SQL mode is enabled.

private static final HashMap<String,String> sqlTokens;
private static Pattern sqlTokenPattern;

static
{           
    //MySQL escape sequences: http://dev.mysql.com/doc/refman/5.1/en/string-syntax.html
    String[][] search_regex_replacement = new String[][]
    {
                //search string     search regex        sql replacement regex
            {   "\u0000"    ,       "\\x00"     ,       "\\\\0"     },
            {   "'"         ,       "'"         ,       "\\\\'"     },
            {   "\""        ,       "\""        ,       "\\\\\""    },
            {   "\b"        ,       "\\x08"     ,       "\\\\b"     },
            {   "\n"        ,       "\\n"       ,       "\\\\n"     },
            {   "\r"        ,       "\\r"       ,       "\\\\r"     },
            {   "\t"        ,       "\\t"       ,       "\\\\t"     },
            {   "\u001A"    ,       "\\x1A"     ,       "\\\\Z"     },
            {   "\\"        ,       "\\\\"      ,       "\\\\\\\\"  }
    };

    sqlTokens = new HashMap<String,String>();
    String patternStr = "";
    for (String[] srr : search_regex_replacement)
    {
        sqlTokens.put(srr[0], srr[2]);
        patternStr += (patternStr.isEmpty() ? "" : "|") + srr[1];            
    }
    sqlTokenPattern = Pattern.compile('(' + patternStr + ')');
}


public static String escape(String s)
{
    Matcher matcher = sqlTokenPattern.matcher(s);
    StringBuffer sb = new StringBuffer();
    while(matcher.find())
    {
        matcher.appendReplacement(sb, sqlTokens.get(matcher.group(1)));
    }
    matcher.appendTail(sb);
    return sb.toString();
}

I had input type text field in a table row field. I am targeting it with code

.admin_table input[type=text]:focus
{
    background-color: #FEE5AC;
}

This could help.

if (! isFinishing()) {

    dialog.show();

    }

try json_decode like so

<?php

   $var = '["SupplierInvoiceReconciliation"]';
   $var = json_decode($var, TRUE);
   print_r($var);
?>

on click of Logout you may call this

private void GoToPreviousActivity() {
    setResult(REQUEST_CODE_LOGOUT);
    this.finish();
}

onActivityResult() of previous Activity call this above code again until you finished the all activities.

There are 2 different ways you can look for lowercase characters:

1. Use str.islower() to find lowercase characters. Combined with a list comprehension, you can gather all lowercase letters:

   lowercase = [c for c in s if c.islower()]
   

2. You could use a regular expression:

   import re
   
   lc = re.compile('[a-z]+')
   lowercase = lc.findall(s)
   

The first method returns a list of individual characters, the second returns a list of character groups:

>>> import re
>>> lc = re.compile('[a-z]+')
>>> lc.findall('AbcDeif')
['bc', 'eif']

I ended up using this code:

public void setMaximized(boolean maximized){
    if(maximized){
        DisplayMode mode = this.getGraphicsConfiguration().getDevice().getDisplayMode();
        Insets insets = Toolkit.getDefaultToolkit().getScreenInsets(this.getGraphicsConfiguration());
        this.setMaximizedBounds(new Rectangle(
                mode.getWidth() - insets.right - insets.left, 
                mode.getHeight() - insets.top - insets.bottom
        ));
        this.setExtendedState(this.getExtendedState() | JFrame.MAXIMIZED_BOTH);
    }else{
        this.setExtendedState(JFrame.NORMAL);
    }
}

This options worked the best of all the options, including multiple monitor support. The only flaw this has is that the taskbar offset is used on all monitors is some configurations.

http://api.jquery.com/jQuery.inArray/

if ($.inArray('example', myArray) != -1)
{
  // found it
}

I have a good way to dynamically load scripts! Now I use ng6, echarts4 (>700Kb ) ,ngx-echarts3 in my project. when I use them by ngx-echarts's docs, I need import echarts in angular.json : "scripts":["./node_modules/echarts/dist/echarts.min.js"] thus in the login module, page while loading scripts.js, this is big file! I don't want it.

So, I think angular loads each module as a file, I can insert a router resolver to preload js, then begin the module loading!

// PreloadScriptResolver.service.js

/**????js??? */
@Injectable({
  providedIn: 'root'
})
export class PreloadScriptResolver implements Resolve<IPreloadScriptResult[]> {
  // Here import all dynamically js file
  private scripts: any = {
    echarts: { loaded: false, src: "assets/lib/echarts.min.js" }
  };
  constructor() { }
  load(...scripts: string[]) {
    const promises = scripts.map(script => this.loadScript(script));
    return Promise.all(promises);
  }
  loadScript(name: string): Promise<IPreloadScriptResult> {
    return new Promise((resolve, reject) => {
      if (this.scripts[name].loaded) {
        resolve({ script: name, loaded: true, status: 'Already Loaded' });
      } else {
        const script = document.createElement('script');
        script.type = 'text/javascript';
        script.src = this.scripts[name].src;
        script.onload = () => {
          this.scripts[name].loaded = true;
          resolve({ script: name, loaded: true, status: 'Loaded' });
        };
        script.onerror = (error: any) => reject({ script: name, loaded: false, status: 'Loaded Error:' + error.toString() });
        document.head.appendChild(script);
      }
    });
  }

  resolve(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): Promise<IPreloadScriptResult[]> {
   return this.load(...route.routeConfig.data.preloadScripts);
  }
}

Then in the submodule-routing.module.ts ,import this PreloadScriptResolver:

const routes: Routes = [
  {
    path: "",
    component: DashboardComponent,
    canActivate: [AuthGuardService],
    canActivateChild: [AuthGuardService],
    resolve: {
      preloadScripts: PreloadScriptResolver
    },
    data: {
      preloadScripts: ["echarts"]  // important!
    },
    children: [.....]
}

This code works well, and its promises that: After js file loaded, then module begin load! this Resolver can use in many routers

untested but should give you the idea. the view:

<form action="upload.php" method="post" enctype="multipart/form-data">
<input type="file" name="csv" value="" />
<input type="submit" name="submit" value="Save" /></form>

upload.php controller:

$csv = array();

// check there are no errors
if($_FILES['csv']['error'] == 0){
    $name = $_FILES['csv']['name'];
    $ext = strtolower(end(explode('.', $_FILES['csv']['name'])));
    $type = $_FILES['csv']['type'];
    $tmpName = $_FILES['csv']['tmp_name'];

    // check the file is a csv
    if($ext === 'csv'){
        if(($handle = fopen($tmpName, 'r')) !== FALSE) {
            // necessary if a large csv file
            set_time_limit(0);

            $row = 0;

            while(($data = fgetcsv($handle, 1000, ',')) !== FALSE) {
                // number of fields in the csv
                $col_count = count($data);

                // get the values from the csv
                $csv[$row]['col1'] = $data[0];
                $csv[$row]['col2'] = $data[1];

                // inc the row
                $row++;
            }
            fclose($handle);
        }
    }
}

Where do these values come from? The documentation for android:fontFamily does not list this information in any place

These are indeed not listed in the documentation. But they are mentioned here under the section 'Font families'. The document lists every new public API for Android Jelly Bean 4.1.

In the styles.xml file in the application I'm working on somebody listed this as the font family, and I'm pretty sure it's wrong:

Yes, that's wrong. You don't reference the font file, you have to use the font name mentioned in the linked document above. In this case it should have been this:

<item name="android:fontFamily">sans-serif</item>

Like the linked answer already stated, 12 variants are possible:

Added in Android Jelly Bean (4.1) - API 16 :

Regular (default):

<item name="android:fontFamily">sans-serif</item>
<item name="android:textStyle">normal</item> 

Italic:

<item name="android:fontFamily">sans-serif</item>
<item name="android:textStyle">italic</item>

Bold:

<item name="android:fontFamily">sans-serif</item>
<item name="android:textStyle">bold</item>

Bold-italic:

<item name="android:fontFamily">sans-serif</item>
<item name="android:textStyle">bold|italic</item>

Light:

<item name="android:fontFamily">sans-serif-light</item>
<item name="android:textStyle">normal</item>

Light-italic:

<item name="android:fontFamily">sans-serif-light</item>
<item name="android:textStyle">italic</item>

Thin :

<item name="android:fontFamily">sans-serif-thin</item>
<item name="android:textStyle">normal</item>

Thin-italic :

<item name="android:fontFamily">sans-serif-thin</item>
<item name="android:textStyle">italic</item>

Condensed regular:

<item name="android:fontFamily">sans-serif-condensed</item>
<item name="android:textStyle">normal</item>

Condensed italic:

<item name="android:fontFamily">sans-serif-condensed</item>
<item name="android:textStyle">italic</item>

Condensed bold:

<item name="android:fontFamily">sans-serif-condensed</item>
<item name="android:textStyle">bold</item>

Condensed bold-italic:

<item name="android:fontFamily">sans-serif-condensed</item>
<item name="android:textStyle">bold|italic</item>

Added in Android Lollipop (v5.0) - API 21 :

Medium:

<item name="android:fontFamily">sans-serif-medium</item>
<item name="android:textStyle">normal</item>

Medium-italic:

<item name="android:fontFamily">sans-serif-medium</item>
<item name="android:textStyle">italic</item>

Black:

<item name="android:fontFamily">sans-serif-black</item>
<item name="android:textStyle">italic</item>

For quick reference, this is how they all look like:

Quick Answer:

• File --> Setting
• In left side in project section --> Project interpreter
• Select desired Project interpreter
• Apply + OK

[NOTE]:

Tested on Pycharm 2018 and 2017.

If you want to return the value not just true or false, use

array.find{|x| x == 'Dog'}

This will return 'Dog' if it exists in the list, otherwise nil.

Try making your constructor private like this:

private Foo newClass = new Foo();

This can solve

 document.getElementById("list-input-email").insertAdjacentHTML('beforeend', '<div class=""><input type="text" name="" value="" class="" /></div>');

It should work, however http://nginx.org/en/docs/http/ngx_http_core_module.html#alias says:

When location matches the last part of the directive’s value: it is better to use the root directive instead:

which would yield:

server {
  listen        8080;
  server_name   www.mysite.com mysite.com;
  error_log     /home/www-data/logs/nginx_www.error.log;
  error_page    404    /404.html;

  location /public/doc/ {
    autoindex on;
    root  /home/www-data/mysite;
  } 

  location = /404.html {
    root /home/www-data/mysite/static/html;
  }       
}

Right-click and export as HAR, then view it using Jan Odvarko's HAR Viewer

This helps in visualising the already captured HAR logs.