I learned a new idiom for this today while watching Raymond Hettinger's Transforming Code into Beautiful, Idiomatic Python:

import functools

with open(filename) as f:
    f_read_ch = functools.partial(f.read, 1)
    for ch in iter(f_read_ch, ''):
        print 'Read a character:', repr(ch) 

Use this command to uninstall Golang for Ubuntu.

This will remove just the golang-go package itself.

sudo apt-get remove golang-go

Uninstall golang-go and its dependencies:

sudo apt-get remove --auto-remove golang-go

There is no specific event for capturing browser close event.

You can only capture on unload of the current page.

By this method, it will be effected while refreshing / navigating the current page.

Even calculating of X Y postion of the mouse event doesn't give you good result.

ALTER DATABASE name OWNER TO new_owner;

See the Postgresql manual's entry on this for more details.

If doing quoted answers, you can do

$commaList = '"'.implode( '" , " ', $fruit). '"';

the above assumes that fruit is non-null. If you don't want to make that assumption you can use an if-then-else statement or ternary (?:) operator.

To import database from dump file use:

mysql -u UserName -p Password DatabaseName < FileName.sql 

In wamp

C:\wamp\bin\mysql\mysql5.0.51b\bin>mysql mysql -uroot -p DatabaseName < FileName.sql 

There is a presupposition here, that the most efficient way to do a lot of "Does the array contain X?" checks is to convert the array to a hash. Efficiency depends on the scarce resource, often time but sometimes space and sometimes programmer effort. You are at least doubling the memory consumed by keeping a list and a hash of the list around simultaneously. Plus you're writing more original code that you'll need to test, document, etc.

As an alternative, look at the List::MoreUtils module, specifically the functions any(), none(), true() and false(). They all take a block as the conditional and a list as the argument, similar to map() and grep():

print "At least one value undefined" if any { !defined($_) } @list;

I ran a quick test, loading in half of /usr/share/dict/words to an array (25000 words), then looking for eleven words selected from across the whole dictionary (every 5000th word) in the array, using both the array-to-hash method and the any() function from List::MoreUtils.

On Perl 5.8.8 built from source, the array-to-hash method runs almost 1100x faster than the any() method (1300x faster under Ubuntu 6.06's packaged Perl 5.8.7.)

That's not the full story however - the array-to-hash conversion takes about 0.04 seconds which in this case kills the time efficiency of array-to-hash method to 1.5x-2x faster than the any() method. Still good, but not nearly as stellar.

My gut feeling is that the array-to-hash method is going to beat any() in most cases, but I'd feel a whole lot better if I had some more solid metrics (lots of test cases, decent statistical analyses, maybe some big-O algorithmic analysis of each method, etc.) Depending on your needs, List::MoreUtils may be a better solution; it's certainly more flexible and requires less coding. Remember, premature optimization is a sin... :)

   //For adding a marker in Google map
        MarkerOptions mp = new MarkerOptions();
        mp.position(new LatLng(Double.parseDouble(latitude), Double.parseDouble(longitude)));
        mp.snippet(strAddress);
        map.addMarker(mp);

        try {

            b = new LatLngBounds.Builder();

            if (MapDetailsList.list != null && MapDetailsList.list.size() > 0) {

                for (int i = 0; i < MapDetailsList.list.size(); i++) {

                    b.include(new LatLng(Double.parseDouble(MapDetailsList.list.get(i).getLatitude()),
                            Double.parseDouble(MapDetailsList.list.get(i).getLongitude())));

                }
                LatLngBounds bounds = b.build();

                DisplayMetrics displayMetrics = getResources().getDisplayMetrics();
                int width = displayMetrics.widthPixels;
                int height = displayMetrics.heightPixels;

                // Change the padding as per needed
                CameraUpdate cu = CameraUpdateFactory.newLatLngBounds(bounds, width-200, height-200, 5);
                // map.setCenter(bounds.getCenter());

                map.animateCamera(cu);

            }

        } catch (Exception e) {

        }

http://i64.tinypic.com/2qjybh4.png

http://i63.tinypic.com/flzwus.png

http://i63.tinypic.com/112g5fm.png

Use .unshift() to add to the beginning of an array.

TheArray.unshift(TheNewObject);

See MDN for doc on unshift() and here for doc on other array methods.

FYI, just like there's .push() and .pop() for the end of the array, there's .shift() and .unshift() for the beginning of the array.

You can add an option tag on top of the others with no value and a prompt like this:

<select>
        <option value="">Choose One</option>
        <option value ="sydney">Sydney</option>
        <option value ="melbourne">Melbourne</option>
        <option value ="cromwell">Cromwell</option>
        <option value ="queenstown">Queenstown</option>
</select>

Or leave it blank instead of saying Choose one if you want.

In Angular 7 the for loop is like below

var values = [
        {
            "name":"Thomas",
            "password":"thomas"
        },
        { 
            "name":"linda",
            "password":"linda"
        }];

for (let item of values)
{
}

I know this is a very old question, yes, I agree we can not hide address bar in modern browsers, but we can hide the url in address bar (e.g show url about:blank), following is my work around solution.

var iframe = '<html><head><style>body, html {width: 100%; height: 100%; margin: 0; padding: 0}</style></head><body><iframe src="https://www.w3schools.com" style="height:calc(100% - 4px);width:calc(100% - 4px)"></iframe></html></body>';

var win = window.open("","","width=600,height=480,toolbar=no,menubar=no,resizable=yes");
win.document.write(iframe);

Regarding some points mentioned in previous answers, and to improve readability:

No need for data.loc or query, but I do think it is a bit long.

The parentheses are also necessary, because of the precedence of the & operator vs. the comparison operators.

I like to write such expressions as follows - less brackets, faster to type, easier to read. Closer to R, too.

q_product = df.Product == p_id
q_start = df.Time > start_time
q_end = df.Time < end_time

df.loc[q_product & q_start & q_end, c('Time,Product')]

# c is just a convenience
c = lambda v: v.split(',') 

i would just do:

char x = 0; //Which will give you an empty value of character

Use "selrow" to get the selected row Id

var myGrid = $('#myGridId');

var selectedRowId = myGrid.jqGrid("getGridParam", 'selrow');

and then use getRowData to get the selected row at index selectedRowId.

var selectedRowData = myGrid.getRowData(selectedRowId);

If the multiselect is set to true on jqGrid, then use "selarrrow" to get list of selected rows:

var selectedRowIds = myGrid.jqGrid("getGridParam", 'selarrrow');

Use loop to iterate the list of selected rows:

var selectedRowData;

for(selectedRowIndex = 0; selectedRowIndex < selectedRowIds .length; selectedRowIds ++) {

   selectedRowData = myGrid.getRowData(selectedRowIds[selectedRowIndex]);

}

Initial Check.

1) When you are exporting the DISPLAY to other machine, ensure you entered the command xhost + on that machine. This command allows to other machine to export their DISPLAY on this machine. There may be security constraints, just know about it. Need to check ssh -X MachineIP will not require xhost + ?

2) Some times JCONSOLE won't show all its process, since those JVM process may run with different user and you are exporting the DISPLAY with another user. so better follow CD_DIR>sudo ./jconsole

3) In WAS (WEBSPHERE); jconsole won't be able to connect its java server process, that time just go till the link, then try connecting it. This worked for me. May be this page is initializing some variables to enable jconsole to connect with that server.

WAS console > Application servers > server1 > Process definition > Java Virtual Machine

I have faced the same issue with AIX (where command line interface only available, There is no DISPLAY UI) machine. I resolved by installing

NX Client for Windows

Step 1: Through that Windows machine, I connected with unix box where GUI console is available.
Step 2: SSH to the AIX box from that UNIX box.
Step 3: set DISPLAY like "export DISPLAY=UNIXMACHINE:NXClientPORTConnectedMentionedOnTitle"
Step 4: Now if we launch any programs which requires DISPLAY; it will be launched on this UNIX box.

VNC

If you installed VNC on UNIX box where display is available; then Windows and NX Client is not required. Step 1: Use VNC to connect with Unix box where GUI console is available.
Step 2: SSH to the AIX box from that UNIX box.
Step 3: set DISPLAY like "export DISPLAY=UNIXMACHINE:VNCPORT"
Step 4: Now if we launch any programs which requires DISPLAY; it will be launched on this UNIX box.

ELSE

Step 1: SSH to the AIX box from that UNIX box.
Step 2: set DISPLAY like "export DISPLAY=UNIXMACHINE:VNCPORT"
Step 3: Now if we launch any programs which requires DISPLAY; it will be launched on this UNIX box.

if not exists (select * from sysobjects where name='cars' and xtype='U')
    create table cars (
        Name varchar(64) not null
    )
go

The above will create a table called cars if the table does not already exist.

Dictionaries are specifically designed to do super fast key lookups. They are implemented as hashtables and the more entries the faster they are relative to other methods. Using the exception engine is only supposed to be done when your method has failed to do what you designed it to do because it is a large set of object that give you a lot of functionality for handling errors. I built an entire library class once with everything surrounded by try catch blocks once and was appalled to see the debug output which contained a seperate line for every single one of over 600 exceptions!

If the string containing the reference is produced by another Git command (or any other shell command for that matter), make sure that it doesn't contain a return carriage at the end. You will have to strip it before passing the string to "git merge".

Note that it's pretty obvious when this happens, because the error message in on 2 lines:

merge: 26d8e04b29925ea5b59cb50501ab5a14dd35f0f9
 - not something we can merge

It took me a little while but finally figured out. Custom xpath that contains some text below worked perfectly for me.

//a[contains(text(),'JB-')]

This can happen when the owner of the SQLite file itself is not the same as the user running the script. Similar errors can occur if the entire directory path (meaning each directory along the way) can't be written to.

Who owns the SQLite file? You?

Who is the script running as? Apache or Nobody?

try {
  var data = {foo: "bar"};
  res.json(JSON.stringify(data));
}
catch (e) {
  res.status(500).json(JSON.stringify(e));
}

This implementation uses awk and has the following advantages:

1. Will only return the first matching entry
2. Ignores lines that start with a ;
3. Trims leading and trailing whitespace, but not internal whitespace

Formatted version:

awk -F '=' '/^\s*database_version\s*=/ {
            sub(/^ +/, "", $2);
            sub(/ +$/, "", $2);
            print $2;
            exit;
          }' parameters.ini

One-liner:

awk -F '=' '/^\s*database_version\s*=/ { sub(/^ +/, "", $2); sub(/ +$/, "", $2); print $2; exit; }' parameters.ini

Wouldn't setting a css rule for all tables, and then a subsequent one for tables where class="dojoxGrid" work? Or am I missing something?

leave the dependency array blank . hope this will help you understand better.

   useEffect(() => {
      doSomething()
    }, []) 

empty dependency array runs Only Once, on Mount

useEffect(() => {
  doSomething(value)
}, [value])  

pass value as a dependency. if dependencies has changed since the last time, the effect will run again.

useEffect(() => {
  doSomething(value)
})  

no dependency. This gets called after every render.

I have tried xlrd, pandas, openpyxl and other such libraries and all of them seem to take exponential time as the file size increase as it reads the entire file. The other solutions mentioned above where they used 'on_demand' did not work for me. If you just want to get the sheet names initially, the following function works for xlsx files.

def get_sheet_details(file_path):
    sheets = []
    file_name = os.path.splitext(os.path.split(file_path)[-1])[0]
    # Make a temporary directory with the file name
    directory_to_extract_to = os.path.join(settings.MEDIA_ROOT, file_name)
    os.mkdir(directory_to_extract_to)

    # Extract the xlsx file as it is just a zip file
    zip_ref = zipfile.ZipFile(file_path, 'r')
    zip_ref.extractall(directory_to_extract_to)
    zip_ref.close()

    # Open the workbook.xml which is very light and only has meta data, get sheets from it
    path_to_workbook = os.path.join(directory_to_extract_to, 'xl', 'workbook.xml')
    with open(path_to_workbook, 'r') as f:
        xml = f.read()
        dictionary = xmltodict.parse(xml)
        for sheet in dictionary['workbook']['sheets']['sheet']:
            sheet_details = {
                'id': sheet['@sheetId'],
                'name': sheet['@name']
            }
            sheets.append(sheet_details)

    # Delete the extracted files directory
    shutil.rmtree(directory_to_extract_to)
    return sheets

Since all xlsx are basically zipped files, we extract the underlying xml data and read sheet names from the workbook directly which takes a fraction of a second as compared to the library functions.

Benchmarking: (On a 6mb xlsx file with 4 sheets)
Pandas, xlrd: 12 seconds
openpyxl: 24 seconds
Proposed method: 0.4 seconds

Since my requirement was just reading the sheet names, the unnecessary overhead of reading the entire time was bugging me so I took this route instead.

You can only do this if you are connecting to a DNS server for the domain -and- AXFR is enabled for your IP address. This is the mechanism that secondary systems use to load a zone from the primary. In the old days, this was not restricted, but due to security concerns, most primary name servers have a whitelist of: secondary name servers + a couple special systems.

If the nameserver you are using allows this then you can use dig or nslookup.

For example:

#nslookup

>ls domain.com

NOTE: because nslookup is being deprecated for dig and other newere tools, some versions of nslookup do not support "ls", most notably Mac OS X's bundled version.

$link = mysql_connect('localhost','root','yourPassword')
mysql_select_db('database_name', $link);
$sql = 'SELECT id FROM games LIMIT 1';
$result = mysql_query($sql, $link) or die(mysql_error());
$row = mysql_fetch_assoc($result);
print_r($row);

There were few things missing in ChrisAD answer. After connecting to mysql it's crucial to select database and also die() statement allows you to see errors if they occur.

Be carefull it works only if you have 1 record in the database, because otherwise you need to add WHERE id=xx or something similar to get only one row and not more. Also you can access your id like $row['id']

Here is some weak adobe documentation on different flash 9 wmode settings.

A note of caution on wmode transparent is here in the adobe bug trac.

And new for flash 10, are two new wmodes: gpu and direct. Please refer to Adobe Knowledge Base about wmode.

A point of confusion sometimes is that to log a text message along with the contents of one of your objects using console.log, you have to pass each one of the two as a different argument. This means that you have to separate them by commas because if you were to use the + operator to concatenate the outputs, this would implicitly call the .toString() method of your object. This in most cases is not explicitly overriden and the default implementation inherited by Object doesn't provide any useful information.

Example to try in console:

>>> var myObj = {foo: 'bar'}
undefined
>>> console.log('myObj is: ', myObj);
myObj is: Object { foo= "bar"}

whereas if you tried to concatenate the informative text message along with the object's contents you'd get:

>>> console.log('myObj is: ' + myObj);
myObj is: [object Object]

So keep in mind that console.log in fact takes as many arguments as you like.

To avoid including a large framework, I think a simple homemade class can do the trick.

Example of class to handle named parameters:

public class NamedParamStatement {
    public NamedParamStatement(Connection conn, String sql) throws SQLException {
        int pos;
        while((pos = sql.indexOf(":")) != -1) {
            int end = sql.substring(pos).indexOf(" ");
            if (end == -1)
                end = sql.length();
            else
                end += pos;
            fields.add(sql.substring(pos+1,end));
            sql = sql.substring(0, pos) + "?" + sql.substring(end);
        }       
        prepStmt = conn.prepareStatement(sql);
    }

    public PreparedStatement getPreparedStatement() {
        return prepStmt;
    }
    public ResultSet executeQuery() throws SQLException {
        return prepStmt.executeQuery();
    }
    public void close() throws SQLException {
        prepStmt.close();
    }

    public void setInt(String name, int value) throws SQLException {        
        prepStmt.setInt(getIndex(name), value);
    }

    private int getIndex(String name) {
        return fields.indexOf(name)+1;
    }
    private PreparedStatement prepStmt;
    private List<String> fields = new ArrayList<String>();
}

Example of calling the class:

String sql;
sql = "SELECT id, Name, Age, TS FROM TestTable WHERE Age < :age OR id = :id";
NamedParamStatement stmt = new NamedParamStatement(conn, sql);
stmt.setInt("age", 35);
stmt.setInt("id", 2);
ResultSet rs = stmt.executeQuery();

Please note that the above simple example does not handle using named parameter twice. Nor does it handle using the : sign inside quotes.

for me i solved it like the following In Visual Studio 2015 : From View menu click Other Windows then click Package Manager Console then run the following commands :

PM> enable-migrations

Migrations have already been enabled in project 'mvcproject'. To overwrite the existing migrations configuration, use the -Force parameter.

PM> enable-migrations -Force

Checking if the context targets an existing database... Code First Migrations enabled for project mvcproject.

then add the migration name under the migration folder it will add the class you need in Solution Explorer by run the following command

PM>Add-migration AddColumnUser

Finally update the database

PM> update-database 

with React-Router v4 on the horizon, there is now a new way of doing this.

import { MemoryRouter, BrowserRouter } from 'react-router';

const navigator = global && global.navigator && global.navigator.userAgent;
const hasWindow = typeof window !== 'undefined';
const isBrowser = typeof navigator !== 'undefined' && navigator.indexOf('Node.js') === -1;
const Router = isBrowser ? BrowserRouter : MemoryRouter;

<Router location="/page-to-go-to"/>

react-lego is an example app that shows how to use/update react-router and it includes example functional tests which navigate the app.

   /**
     * Assigns the specified char value to each element of the specified array
     * of chars.
     *
     * @param a the array to be filled
     * @param val the value to be stored in all elements of the array
     */
    public static void fill(char[] a, char val) {
        for (int i = 0, len = a.length; i < len; i++)
            a[i] = val;
    }

That's the way Arrays.fill does it.

(I suppose you could drop into JNI and use memset.)

Using javascript seems to be unnecessary if you choose CSS3.

By using :before selector, you can do this in two lines of CSS. (no script involved).

Another advantage of this approach is that it does not rely on <label> tag and works even it is missing.

Note: in browsers without CSS3 support, checkboxes will look normal. (backward compatible).

input[type=checkbox]:before { content:""; display:inline-block; width:12px; height:12px; background:red; }
input[type=checkbox]:checked:before { background:green; }?

You can see a demo here: http://jsfiddle.net/hqZt6/1/

and this one with images:

http://jsfiddle.net/hqZt6/6/

I just removed 'href' attribute from that anchor tag which I want to disable

$('#idOfAnchorTag').removeAttr('href');

$('#idOfAnchorTag').attr('class', $('#idOfAnchorTag').attr('class')+ ' disabled');

Try this:

if [ ${STATUS} -ne 100 -a "${STRING}" = "${VALUE}" ]

or

if [ ${STATUS} -ne 100 ] && [ "${STRING}" = "${VALUE}" ]

In Storyboard / Interface Builder simply disable scrolling in the Attribute inspector.

In code textField.scrollEnabled = false should do the trick.

There is: Path.ChangeExtension method. E.g.:

var result = Path.ChangeExtension(myffile, ".jpg");

In the case if you also want to physically change the extension, you could use File.Move method:

File.Move(myffile, Path.ChangeExtension(myffile, ".jpg"));

Fast way to upgrade ruby to v2.4+

brew upgrade ruby

or

sudo gem update --system 

Swift 4
Try this and see (date range with String):

// Start & End date string
let startingAt = "01/01/2018"
let endingAt = "08/03/2018"

// Sample date formatter
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "dd/MM/yyyy"

// start and end date object from string dates
var startDate = dateFormatter.date(from: startingAt) ?? Date()
let endDate = dateFormatter.date(from: endingAt) ?? Date()


// Actual operational logic
var dateRange: [String] = []
while startDate <= endDate {
    let stringDate = dateFormatter.string(from: startDate)
    startDate = Calendar.current.date(byAdding: .day, value: 1, to: startDate) ?? Date()
    dateRange.append(stringDate)
}

print("Resulting Array - \(dateRange)")

Swift 3

var date1 = Date(string: "2010-01-01 00:00:00 +0000")
var date2 = Date(string: "2010-02-03 00:00:00 +0000")
var secondsBetween: TimeInterval = date2.timeIntervalSince(date1)
var numberOfDays: Int = secondsBetween / 86400
print(numberOfDays)

If you need to interact directly with the DOM element, why not just use document.getElementById since, if you are trying to interact with a specific element you will probably know the id, as assuming that the classname is on only one element or some other option tends to be risky.

But, I tend to agree with the others, that in most cases you should learn to do what you need using what jQuery gives you, as it is very flexible.

UPDATE: Based on a comment: Here is a post with a nice explanation: http://www.mail-archive.com/[email protected]/msg04461.html

$(this).attr("checked") ? $(this).val() : 0

This will return the value if it's checked, or 0 if it's not.

$(this).val() is just reaching into the dom and getting the attribute "value" of the element, whether or not it's checked.

This answer does not address the Debug button (you'd have to design a form and use the buttons on that to do something like the method in your next question). But it does address this part:

now I don't want to lose the comfortableness of the default handler which also point me to the exact line where the error has occured.

First, I'll assume you don't want this in production code - you want it either for debugging or for code you personally will be using. I use a compiler flag to indicate debugging; then if I'm troubleshooting a program, I can easily find the line that's causing the problem.

# Const IsDebug = True

Sub ProcA()
On Error Goto ErrorHandler
' Main code of proc

ExitHere:
    On Error Resume Next
    ' Close objects and stuff here
    Exit Sub

ErrorHandler:
    MsgBox Err.Number & ": " & Err.Description, , ThisWorkbook.Name & ": ProcA"
    #If IsDebug Then
        Stop            ' Used for troubleshooting - Then press F8 to step thru code 
        Resume          ' Resume will take you to the line that errored out
    #Else
        Resume ExitHere ' Exit procedure during normal running
    #End If
End Sub

Note: the exception to Resume is if the error occurs in a sub-procedure without an error handling routine, then Resume will take you to the line in this proc that called the sub-procedure with the error. But you can still step into and through the sub-procedure, using F8 until it errors out again. If the sub-procedure's too long to make even that tedious, then your sub-procedure should probably have its own error handling routine.

There are multiple ways to do this. Sometimes for smaller programs where I know I'm gonna be stepping through it anyway when troubleshooting, I just put these lines right after the MsgBox statement:

    Resume ExitHere         ' Normally exits during production
    Resume                  ' Never will get here
Exit Sub

It will never get to the Resume statement, unless you're stepping through and set it as the next line to be executed, either by dragging the next statement pointer to that line, or by pressing CtrlF9 with the cursor on that line.

Here's an article that expands on these concepts: Five tips for handling errors in VBA. Finally, if you're using VBA and haven't discovered Chip Pearson's awesome site yet, he has a page explaining Error Handling In VBA.

[Ljava.lang.Object; is the name for Object[].class, the java.lang.Class representing the class of array of Object.

The naming scheme is documented in Class.getName():

If this class object represents a reference type that is not an array type then the binary name of the class is returned, as specified by the Java Language Specification (§13.1).

If this class object represents a primitive type or void, then the name returned is the Java language keyword corresponding to the primitive type or void.

If this class object represents a class of arrays, then the internal form of the name consists of the name of the element type preceded by one or more '[' characters representing the depth of the array nesting. The encoding of element type names is as follows:

Element Type        Encoding
boolean             Z
byte                B
char                C
double              D
float               F
int                 I
long                J
short               S 
class or interface  Lclassname;

Yours is the last on that list. Here are some examples:

// xxxxx varies
System.out.println(new int[0][0][7]); // [[[I@xxxxx
System.out.println(new String[4][2]); // [[Ljava.lang.String;@xxxxx
System.out.println(new boolean[256]); // [Z@xxxxx

The reason why the toString() method on arrays returns String in this format is because arrays do not @Override the method inherited from Object, which is specified as follows:

The toString method for class Object returns a string consisting of the name of the class of which the object is an instance, the at-sign character `@', and the unsigned hexadecimal representation of the hash code of the object. In other words, this method returns a string equal to the value of:

getClass().getName() + '@' + Integer.toHexString(hashCode())

Note: you can not rely on the toString() of any arbitrary object to follow the above specification, since they can (and usually do) @Override it to return something else. The more reliable way of inspecting the type of an arbitrary object is to invoke getClass() on it (a final method inherited from Object) and then reflecting on the returned Class object. Ideally, though, the API should've been designed such that reflection is not necessary (see Effective Java 2nd Edition, Item 53: Prefer interfaces to reflection).

On a more "useful" toString for arrays

java.util.Arrays provides toString overloads for primitive arrays and Object[]. There is also deepToString that you may want to use for nested arrays.

Here are some examples:

int[] nums = { 1, 2, 3 };

System.out.println(nums);
// [I@xxxxx

System.out.println(Arrays.toString(nums));
// [1, 2, 3]

int[][] table = {
        { 1, },
        { 2, 3, },
        { 4, 5, 6, },
};

System.out.println(Arrays.toString(table));
// [[I@xxxxx, [I@yyyyy, [I@zzzzz]

System.out.println(Arrays.deepToString(table));
// [[1], [2, 3], [4, 5, 6]]

There are also Arrays.equals and Arrays.deepEquals that perform array equality comparison by their elements, among many other array-related utility methods.

Related questions

• Java Arrays.equals() returns false for two dimensional arrays. -- in-depth coverage

You can use boost::posix_time::time_duration to get the time range. E.g like this

boost::posix_time::time_duration diff = tick - now;
diff.total_milliseconds();

And to get a higher resolution you can change the clock you are using. For example to the boost::posix_time::microsec_clock, though this can be OS dependent. On Windows, for example, boost::posix_time::microsecond_clock has milisecond resolution, not microsecond.

An example which is a little dependent on the hardware.

int main(int argc, char* argv[])
{
    boost::posix_time::ptime t1 = boost::posix_time::second_clock::local_time();
    boost::this_thread::sleep(boost::posix_time::millisec(500));
    boost::posix_time::ptime t2 = boost::posix_time::second_clock::local_time();
    boost::posix_time::time_duration diff = t2 - t1;
    std::cout << diff.total_milliseconds() << std::endl;

    boost::posix_time::ptime mst1 = boost::posix_time::microsec_clock::local_time();
    boost::this_thread::sleep(boost::posix_time::millisec(500));
    boost::posix_time::ptime mst2 = boost::posix_time::microsec_clock::local_time();
    boost::posix_time::time_duration msdiff = mst2 - mst1;
    std::cout << msdiff.total_milliseconds() << std::endl;
    return 0;
}

On my win7 machine. The first out is either 0 or 1000. Second resolution. The second one is nearly always 500, because of the higher resolution of the clock. I hope that help a little.

it work for me:

pip install scrapy --user -U

employees.sort(key = lambda x:x[1])
employees.sort(key = lambda x:x[0])

We can also use .sort with lambda 2 times because python sort is in place and stable. This will first sort the list according to the second element, x[1]. Then, it will sort the first element, x[0] (highest priority).

employees[0] = Employee's Name
employees[1] = Employee's Salary

This is equivalent to doing the following: employees.sort(key = lambda x:(x[0], x[1]))

I have added the following on my excel sheet

=VLOOKUP(B2,Res_partner!$A$2:$C$21208,1,FALSE)

Still doesn't seem to work. I get an #N/A
BUT

=VLOOKUP(B2,Res_partner!$C$2:$C$21208,1,FALSE)

Works

You can also try using flex-box

<head><style>
body {
    color:white;
    font-family:arial;
    font-size:1.2em;
}
form {
    margin:0 auto;
    padding:20px;
    background:#444;
}
.input-group {
    margin-top:10px;
    width:60%;
    display:flex;
    justify-content:space-between;
    flex-wrap:wrap;
}
label, input {
    flex-basis:100px;
}
</style></head>
<body>

<form>
    <div class="wrapper">
        <div class="input-group">
            <label for="user_name">name:</label>
            <input type="text" id="user_name">
        </div>
        <div class="input-group">
            <label for="user_pass">Password:</label>
            <input type="password" id="user_pass">
        </div>
    </div>
</form>

</body>
</html>

Look at stat for checking if the directory exists,

And mkdir, to create a directory.

#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>

struct stat st = {0};

if (stat("/some/directory", &st) == -1) {
    mkdir("/some/directory", 0700);
}

You can see the manual of these functions with the man 2 stat and man 2 mkdir commands.

i just wanted to share this.

fileName.slice(fileName.lastIndexOf('.'))

although this has a downfall that files with no extension will return last string. but if you do so this will fix every thing :

   function getExtention(fileName){
     var i = fileName.lastIndexOf('.');
     if(i === -1 ) return false;
     return fileName.slice(i)
   }

Date dateWithoutTime =
    new Date(myDate.getYear(),myDate.getMonth(),myDate.getDate()) 

This is deprecated, but the fastest way to do it.

Generally, the backtrace is used to get the stack of the current thread, but if there is a necessity to get the stack trace of all the threads, use the following command.

thread apply all bt

Question

How to get an actual file path from a URI

Answer

To my knowledge, we don't need to get the file path from a URI because for most of the cases we can directly use the URI to get our work done (like 1. getting bitmap 2. Sending a file to the server, etc.)

1. Sending to the server

We can directly send the file to the server using just the URI.

Using the URI we can get InputStream, which we can directly send to the server using MultiPartEntity.

Example

/**
 * Used to form Multi Entity for a URI (URI pointing to some file, which we got from other application).
 *
 * @param uri     URI.
 * @param context Context.
 * @return Multi Part Entity.
 */
public MultipartEntity formMultiPartEntityForUri(final Uri uri, final Context context) {
    MultipartEntity multipartEntity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE, null, Charset.forName("UTF-8"));
    try {
        InputStream inputStream = mContext.getContentResolver().openInputStream(uri);
        if (inputStream != null) {
            ContentBody contentBody = new InputStreamBody(inputStream, getFileNameFromUri(uri, context));
            multipartEntity.addPart("[YOUR_KEY]", contentBody);
        }
    }
    catch (Exception exp) {
        Log.e("TAG", exp.getMessage());
    }
    return multipartEntity;
}

/**
 * Used to get a file name from a URI.
 *
 * @param uri     URI.
 * @param context Context.
 * @return File name from URI.
 */
public String getFileNameFromUri(final Uri uri, final Context context) {

    String fileName = null;
    if (uri != null) {
        // Get file name.
        // File Scheme.
        if (ContentResolver.SCHEME_FILE.equals(uri.getScheme())) {
            File file = new File(uri.getPath());
            fileName = file.getName();
        }
        // Content Scheme.
        else if (ContentResolver.SCHEME_CONTENT.equals(uri.getScheme())) {
            Cursor returnCursor =
                    context.getContentResolver().query(uri, null, null, null, null);
            if (returnCursor != null && returnCursor.moveToFirst()) {
                int nameIndex = returnCursor.getColumnIndex(OpenableColumns.DISPLAY_NAME);
                fileName = returnCursor.getString(nameIndex);
                returnCursor.close();
            }
        }
    }
    return fileName;
}

2. Getting a BitMap from a URI

If the URI is pointing to image then we will get bitmap, else null:

/**
 * Used to create bitmap for the given URI.
 * <p>
 * 1. Convert the given URI to bitmap.
 * 2. Calculate ratio (depending on bitmap size) on how much we need to subSample the original bitmap.
 * 3. Create bitmap bitmap depending on the ration from URI.
 * 4. Reference - http://stackoverflow.com/questions/3879992/how-to-get-bitmap-from-an-uri
 *
 * @param context       Context.
 * @param uri           URI to the file.
 * @param bitmapSize Bitmap size required in PX.
 * @return Bitmap bitmap created for the given URI.
 * @throws IOException
 */
public static Bitmap createBitmapFromUri(final Context context, Uri uri, final int bitmapSize) throws IOException {

    // 1. Convert the given URI to bitmap.
    InputStream input = context.getContentResolver().openInputStream(uri);
    BitmapFactory.Options onlyBoundsOptions = new BitmapFactory.Options();
    onlyBoundsOptions.inJustDecodeBounds = true;
    onlyBoundsOptions.inDither = true;//optional
    onlyBoundsOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
    BitmapFactory.decodeStream(input, null, onlyBoundsOptions);
    input.close();
    if ((onlyBoundsOptions.outWidth == -1) || (onlyBoundsOptions.outHeight == -1)) {
        return null;
    }

    // 2. Calculate ratio.
    int originalSize = (onlyBoundsOptions.outHeight > onlyBoundsOptions.outWidth) ? onlyBoundsOptions.outHeight : onlyBoundsOptions.outWidth;
    double ratio = (originalSize > bitmapSize) ? (originalSize / bitmapSize) : 1.0;

    // 3. Create bitmap.
    BitmapFactory.Options bitmapOptions = new BitmapFactory.Options();
    bitmapOptions.inSampleSize = getPowerOfTwoForSampleRatio(ratio);
    bitmapOptions.inDither = true;//optional
    bitmapOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
    input = context.getContentResolver().openInputStream(uri);
    Bitmap bitmap = BitmapFactory.decodeStream(input, null, bitmapOptions);
    input.close();

    return bitmap;
}

/**
 * For Bitmap option inSampleSize - We need to give value in power of two.
 *
 * @param ratio Ratio to be rounded of to power of two.
 * @return Ratio rounded of to nearest power of two.
 */
private static int getPowerOfTwoForSampleRatio(final double ratio) {
    int k = Integer.highestOneBit((int) Math.floor(ratio));
    if (k == 0) return 1;
    else return k;
}

Comments

1. Android doesn't provide any methods to get file path from a URI, and in most of the above answers we have hard coded some constants, which may break in feature release (sorry, I may be wrong).
2. Before going directly going to a solution of the getting file path from a URI, try if you can solve your use case with a URI and Android default methods.

Reference

1. https://developer.android.com/guide/topics/providers/content-provider-basics.html
2. https://developer.android.com/reference/android/content/ContentResolver.html
3. https://hc.apache.org/httpcomponents-client-ga/httpmime/apidocs/org/apache/http/entity/mime/content/InputStreamBody.html

Can use getElementsByTagName

var x = document.getElementsByTagName("title")[0];

alert(x.innerHTML)

// or

alert(x.textContent)

// or

document.querySelector('title')

Edits as suggested by Paul

The different names are just ways of packaging java apps.

Skinny – Contains ONLY the bits you literally type into your code editor, and NOTHING else.

Thin – Contains all of the above PLUS the app’s direct dependencies of your app (db drivers, utility libraries, etc).

Hollow – The inverse of Thin – Contains only the bits needed to run your app but does NOT contain the app itself. Basically a pre-packaged “app server” to which you can later deploy your app, in the same style as traditional Java EE app servers, but with important differences.

Fat/Uber – Contains the bit you literally write yourself PLUS the direct dependencies of your app PLUS the bits needed to run your app “on its own”.

Source: Article from Dzone

Reposted from: https://stackoverflow.com/a/57592130/9470346

This is best practice

$("input[name='radioGroup']:checked").val()

To add to Lauritz's answer, I created a decorator/wrapper for exception handling and the wrapper logs which type of exception occurred.

class general_function_handler(object):
    def __init__(self, func):
        self.func = func
    def __get__(self, obj, type=None):
        return self.__class__(self.func.__get__(obj, type))
    def __call__(self, *args, **kwargs):
        try:
            retval = self.func(*args, **kwargs)
        except Exception, e :
            logging.warning('Exception in %s' % self.func)
            template = "An exception of type {0} occured. Arguments:\n{1!r}"
            message = template.format(type(e).__name__, e.args)
            logging.exception(message)
            sys.exit(1) # exit on all exceptions for now
        return retval

This can be called on a class method or a standalone function with the decorator:

@general_function_handler

See my blog about for the full example: http://ryaneirwin.wordpress.com/2014/05/31/python-decorators-and-exception-handling/

To drop all columns with values 0 in any row:

new_df = df[df.loc[:]!=0].dropna()

You can use Java 8 Stream API.

Method distinct is an intermediate operation that filters the stream and allows only distinct values (by default using the Object::equals method) to pass to the next operation.
I wrote an example below for your case,

// Create the list with duplicates.
List<String> listAll = Arrays.asList("CO2", "CH4", "SO2", "CO2", "CH4", "SO2", "CO2", "CH4", "SO2");

// Create a list with the distinct elements using stream.
List<String> listDistinct = listAll.stream().distinct().collect(Collectors.toList());

// Display them to terminal using stream::collect with a build in Collector.
String collectAll = listAll.stream().collect(Collectors.joining(", "));
System.out.println(collectAll); //=> CO2, CH4, SO2, CO2, CH4 etc..
String collectDistinct = listDistinct.stream().collect(Collectors.joining(", "));
System.out.println(collectDistinct); //=> CO2, CH4, SO2

It does seem odd. I found this thread, also thinking I'd seen one in the past, but couldn't find it in Javadoc.

I can see the Java developers' point about using specialised classes, and that the presence of a generic Pair class could cause developers to be lazy (perish the thought!)

However, in my experience, there are undoubtedly times when the thing you're modelling really is just a pair of things and coming up with a meaningful name for the relationship between the two halves of the pair, is actually more painful than just getting on with it. So instead, we're left to create a 'bespoke' class of practically boiler-plate code - probably called 'Pair'.

This could be a slippery slope, but a Pair and a Triplet class would cover a very large proportion of the use-cases.

Using .replace(/\s+/g,'') works fine;

Example:

this.slug = removeAccent(this.slug).replace(/\s+/g,'');

Additionally to what Chris Taylor wrote: if you have something serialized as an attribute, you can have a property on your class named {PropertyName}Specified to control if it should be serialized. In code:

public class MyClass
{
    [XmlAttribute]
    public int MyValue;

    [XmlIgnore]
    public bool MyValueSpecified;
}

For Mac/Linux;

PYTHONPATH=/foo/bar/baz python somescript.py somecommand

For Windows, setup a wrapper pythonpath.bat;

@ECHO OFF
setlocal
set PYTHONPATH=%1
python %2 %3
endlocal

and call pythonpath.bat script file like;

pythonpath.bat /foo/bar/baz somescript.py somecommand

You can set the type of error reporting you need in php.ini or by using the error_reporting() function on top of your script.

I was posting this as an answer to https://stackoverflow.com/a/56415379/1745001 when it got closed as a dup of this question so here it is as it applies here too:

For simplicity and clarity just use awk for the calculations as it's a standard UNIX tool and so just as likely to be present as bc and much easier to work with syntactically.

For this question:

$ cat tst.sh
#!/bin/bash

num1=3.17648e-22
num2=1.5

awk -v num1="$num1" -v num2="$num2" '
BEGIN {
    print "num1", (num1 < num2 ? "<" : ">="), "num2"
}
'

$ ./tst.sh
num1 < num2

and for that other question that was closed as a dup of this one:

$ cat tst.sh
#!/bin/bash

read -p "Operator: " operator
read -p "First number: " ch1
read -p "Second number: " ch2

awk -v ch1="$ch1" -v ch2="$ch2" -v op="$operator" '
BEGIN {
    if ( ( op == "/" ) && ( ch2 == 0 ) ) {
        print "Nope..."
    }
    else {
        print ch1 '"$operator"' ch2
    }
}
'

$ ./tst.sh
Operator: /
First number: 4.5
Second number: 2
2.25

$ ./tst.sh
Operator: /
First number: 4.5
Second number: 0
Nope...

If you are on the git bash try using exit;

I tried using the q or ctrl + q but they did not worked on bash.

use java decompiler. http://jd.benow.ca/. you can open the jar files.

Thanks, Manirathinam.

As per my observation like two cases, if a table has less then 100,000 records then the join will work fast.

But in the case that a table has more than 100,000 records then a subquery is best result.

I have one table that has 500,000 records on that I created below query and its result time is like

SELECT * 
FROM crv.workorder_details wd 
inner join  crv.workorder wr on wr.workorder_id = wd.workorder_id;

Result : 13.3 Seconds

select * 
from crv.workorder_details 
where workorder_id in (select workorder_id from crv.workorder)

Result : 1.65 Seconds

I had this issue and the reason was EOL in some editors such as Notepad++. You can check it in Edit menu/EOL conversion. Unix(LF) should be selected. I hope it would be useful.

a pure css method base on -webkit-line-clamp:

@-webkit-keyframes ellipsis {/*for test*/_x000D_
    0% { width: 622px }_x000D_
    50% { width: 311px }_x000D_
    100% { width: 622px }_x000D_
}_x000D_
.ellipsis {_x000D_
    max-height: 40px;/* h*n */_x000D_
    overflow: hidden;_x000D_
    background: #eee;_x000D_
_x000D_
    -webkit-animation: ellipsis ease 5s infinite;/*for test*/_x000D_
    /**_x000D_
    overflow: visible;_x000D_
    /**/_x000D_
}_x000D_
.ellipsis .content {_x000D_
    position: relative;_x000D_
    display: -webkit-box;_x000D_
    -webkit-box-orient: vertical;_x000D_
    -webkit-box-pack: center;_x000D_
    font-size: 50px;/* w */_x000D_
    line-height: 20px;/* line-height h */_x000D_
    color: transparent;_x000D_
    -webkit-line-clamp: 2;/* max row number n */_x000D_
    vertical-align: top;_x000D_
}_x000D_
.ellipsis .text {_x000D_
    display: inline;_x000D_
    vertical-align: top;_x000D_
    font-size: 14px;_x000D_
    color: #000;_x000D_
}_x000D_
.ellipsis .overlay {_x000D_
    position: absolute;_x000D_
    top: 0;_x000D_
    left: 50%;_x000D_
    width: 100%;_x000D_
    height: 100%;_x000D_
    overflow: hidden;_x000D_
_x000D_
    /**_x000D_
    overflow: visible;_x000D_
    left: 0;_x000D_
    background: rgba(0,0,0,.5);_x000D_
    /**/_x000D_
}_x000D_
.ellipsis .overlay:before {_x000D_
    content: "";_x000D_
    display: block;_x000D_
    float: left;_x000D_
    width: 50%;_x000D_
    height: 100%;_x000D_
_x000D_
    /**_x000D_
    background: lightgreen;_x000D_
    /**/_x000D_
}_x000D_
.ellipsis .placeholder {_x000D_
    float: left;_x000D_
    width: 50%;_x000D_
    height: 40px;/* h*n */_x000D_
_x000D_
    /**_x000D_
    background: lightblue;_x000D_
    /**/_x000D_
}_x000D_
.ellipsis .more {_x000D_
    position: relative;_x000D_
    top: -20px;/* -h */_x000D_
    left: -50px;/* -w */_x000D_
    float: left;_x000D_
    color: #000;_x000D_
    width: 50px;/* width of the .more w */_x000D_
    height: 20px;/* h */_x000D_
    font-size: 14px;_x000D_
_x000D_
    /**_x000D_
    top: 0;_x000D_
    left: 0;_x000D_
    background: orange;_x000D_
    /**/_x000D_
}

<div class='ellipsis'>_x000D_
    <div class='content'>_x000D_
        <div class='text'>text text text text text text text text text text text text text text text text text text text text text </div>_x000D_
        <div class='overlay'>_x000D_
            <div class='placeholder'></div>_x000D_
            <div class='more'>...more</div>_x000D_
        </div>_x000D_
    </div>_x000D_
</div>

There are lots of explanation of Jmeter Summary, I have been using this tool from quite some time for generating performance testing report with relevant data. The explanation available on below link is right from the field experience:

Jmeter:Understanding Summary Report

This is one of the most useful report generated by Jmeter to undertstand the load test result.

# Label: Name of HTTP sample request send to server

# Samples : This Captures the total number of samples pushed to server. Suppose you put a Loop Controller to run it 5 times this particular request and then 2 iteration(Called Loop Count in Thread Group)is set and load test is run for 100 users, then the count that will be displayed here .... 1*5*2 * 100 =1000. Total = total number of samples send to server during entire run.

# Average : It's an average response time for a particular http request. This response time is in millisecond, and an average for 5 loops in two iteration for 100 users. Total = Average of total average of samples, means add all averages for all samples and divide by number of samples

# Min : Minmum time spend by sample requests send for this label. The total equals to the minimum time across all samples.

# Max : Maximum tie spend by sample requests send for this label The total equals to the maxmimum time across all samples.

# Std. Dev. : Knowing the standard deviation of your data set tells you how densely the data points are clustered around the mean. The smaller the standard deviation, the more consistent the data. Standard deviation should be less than or equal to half of the average time for a label. If it is more than that, then it means that something is wrong. you need to figure out the problem and fix it. https://en.wikipedia.org/wiki/Standard_deviation Total is euqals to highest deviation across all samples.

# Error: Total percentage of erros found for a particular sample request. 0.0% shows that all requests completed successfully. Total equals to percentage of errors samples in all samples (Total Samples)

# Throughput: Hits/sec, or total number of request per unit of time(sec, mins, hr) send to server during test.

endTime = lastSampleStartTime + lastSampleLoadTime
startTime = firstSampleStartTime
converstion = unit time conversion value
Throughput = Numrequests / ((endTime - startTime)*conversion)

# KB/sec : Its mesuring throughput rate in Kilobytes per second.

# Avg. Bytes: Avegare of total bytes of data downloaded from server. Totals is average bytes across all samples.

Without any server side solution, Theres is only one way in which a secure page can get something from a insecure page/request and that's thought postMessage and a popup

I said popup cuz the site isn't allowed to mix content. But a popup isn't really mixing. It has it's own window but are still able to communicate with the opener with postMessage.

So you can open a new http-page with window.open(...) and have that making the request for you (that is if the site is using CORS as well)

XDomain came to mind when i wrote this but here is a modern approach using the new fetch api, the advantage is the streaming of large files, the downside is that it won't work in all browser

You put this proxy script on any http page

onmessage = evt => {
  const port = evt.ports[0]

  fetch(...evt.data).then(res => {
    // the response is not clonable
    // so we make a new plain object
    const obj = {
      bodyUsed: false,
      headers: [...res.headers],
      ok: res.ok,
      redirected: res.redurected,
      status: res.status,
      statusText: res.statusText,
      type: res.type,
      url: res.url
    }

    port.postMessage(obj)

    // Pipe the request to the port (MessageChannel)
    const reader = res.body.getReader()
    const pump = () => reader.read()
    .then(({value, done}) => done 
      ? port.postMessage(done)
      : (port.postMessage(value), pump())
    )

    // start the pipe
    pump()
  })
}

Then you open a popup window in your https page (note that you can only do this on a user interaction event or else it will be blocked)

window.popup = window.open(http://.../proxy.html)

create your utility function

function xfetch(...args) {
  // tell the proxy to make the request
  const ms = new MessageChannel
  popup.postMessage(args, '*', [ms.port1])

  // Resolves when the headers comes
  return new Promise((rs, rj) => {

    // First message will resolve the Response Object
    ms.port2.onmessage = ({data}) => {
      const stream = new ReadableStream({
        start(controller) {

          // Change the onmessage to pipe the remaning request
          ms.port2.onmessage = evt => {
            if (evt.data === true) // Done?
              controller.close()
            else // enqueue the buffer to the stream
              controller.enqueue(evt.data)
          }
        }
      })

      // Construct a new response with the 
      // response headers and a stream
      rs(new Response(stream, data))
    }
  })
}

And make the request like you normally do with the fetch api

xfetch('http://httpbin.org/get')
  .then(res => res.text())
  .then(console.log)

array.find(e => !!e);  // return the first element 

since "find" return the first element that matches the filter && !!e match any element.

Note This works only when the first element is not a "Falsy" : null, false, NaN, "", 0, undefined

std::string s(v.begin(), v.end());

Where v is pretty much anything iterable. (Specifically begin() and end() must return InputIterators.)

I think you want a pipelined table function.

Something like this:

CREATE OR REPLACE PACKAGE test AS

    TYPE measure_record IS RECORD(
       l4_id VARCHAR2(50), 
       l6_id VARCHAR2(50), 
       l8_id VARCHAR2(50), 
       year NUMBER, 
       period NUMBER,
       VALUE NUMBER);

    TYPE measure_table IS TABLE OF measure_record;

    FUNCTION get_ups(foo NUMBER)
        RETURN measure_table
        PIPELINED;
END;

CREATE OR REPLACE PACKAGE BODY test AS

    FUNCTION get_ups(foo number)
        RETURN measure_table
        PIPELINED IS

        rec            measure_record;

    BEGIN
        SELECT 'foo', 'bar', 'baz', 2010, 5, 13
          INTO rec
          FROM DUAL;

        -- you would usually have a cursor and a loop here   
        PIPE ROW (rec);

        RETURN;
    END get_ups;
END;

For simplicity I removed your parameters and didn't implement a loop in the function, but you can see the principle.

Usage:

SELECT *
  FROM table(test.get_ups(0));



L4_ID L6_ID L8_ID       YEAR     PERIOD      VALUE
----- ----- ----- ---------- ---------- ----------
foo   bar   baz         2010          5         13
1 row selected.

Following @Francisco Goldenstein answer, I wrote an extension method

using System.Collections.Generic;
using System.Linq;
using System.Xml.Linq;

namespace Mediatel.Framework
{
    public static class XDocumentHelper
    {
        public static IEnumerable<XElement> DescendantElements(this XDocument xDocument, string nodeName)
        {
            return xDocument.Descendants().Where(p => p.Name.LocalName == nodeName);
        }
    }
}

    // Create two collections:
    LinkedList<String> listA =  new LinkedList<String>();
    ArrayList<String> listB =  new ArrayList<String>();

    // Add some elements to listA:
    listA.add("A");
    listA.add("B");
    listA.add("C");
    listA.add("D");

    // Add some elements to listB:
    listB.add("A");
    listB.add("B");
    listB.add("C");

    // use 

    List<String> common = new ArrayList<String>(listA);
    // use common.retainAll

    common.retainAll(listB);

    System.out.println("The common collection is : " + common);

If you only need to only to disable updating updated_at just add this method to your model.

public function setUpdatedAtAttribute($value)
{
    // to Disable updated_at
}

This will override the parent setUpdatedAtAttribute() method. created_at will work as usual. Same way you can write a method to disable updating created_at only.

In my opinion one of the worst chosen word's to describe the process, as it is not related to anything in real-life or similar. In general the word "queue" is very bad as if pronounced, it sounds like the English character "q". See the inefficiency here?

enqueue: to place something into a queue; to add an element to the tail of a queue;

dequeue to take something out of a queue; to remove the first available element from the head of a queue

source: https://www.thefreedictionary.com

If Symfony 4 or 5, juste use this code (Where name is the name of your field):

$request->request->get('name');

You could just re-direct specific numbers in your contacts to your voice-mail. That's already supported.

Otherwise I guess the documentation for 'Contacts' would be a good place to start looking.

Contains(s2) is many times (in my computer 10 times) faster than IndexOf(s2) because Contains uses StringComparison.Ordinal that is faster than the culture sensitive search that IndexOf does by default (but that may change in .net 4.0 http://davesbox.com/archive/2008/11/12/breaking-changes-to-the-string-class.aspx).

Contains has exactly the same performance as IndexOf(s2,StringComparison.Ordinal) >= 0 in my tests but it's shorter and makes your intent clear.

If there are multiple certificates in a pfx file (key + corresponding certificate and a CA certificate) then this command worked well for me:

certutil -importpfx c:\somepfx.pfx this works but still a password is needed to be typed in manually for private key. Including -p and "password" cause error too many arguments for certutil on XP

Say the other guy created bar on top of foo, but you created baz in the meantime and then merged, giving a history of

$ git lola
*   2582152 (HEAD, master) Merge branch 'otherguy'
|\  
| * c7256de (otherguy) bar
* | b7e7176 baz
|/  
* 9968f79 foo

Note: git lola is a non-standard but useful alias.

No dice with git revert:

$ git revert HEAD
fatal: Commit 2582152... is a merge but no -m option was given.

Charles Bailey gave an excellent answer as usual. Using git revert as in

$ git revert --no-edit -m 1 HEAD
[master e900aad] Revert "Merge branch 'otherguy'"
 0 files changed, 0 insertions(+), 0 deletions(-)
 delete mode 100644 bar

effectively deletes bar and produces a history of

$ git lola
* e900aad (HEAD, master) Revert "Merge branch 'otherguy'"
*   2582152 Merge branch 'otherguy'
|\  
| * c7256de (otherguy) bar
* | b7e7176 baz
|/  
* 9968f79 foo

But I suspect you want to throw away the merge commit:

$ git reset --hard HEAD^
HEAD is now at b7e7176 baz

$ git lola
* b7e7176 (HEAD, master) baz
| * c7256de (otherguy) bar
|/  
* 9968f79 foo

As documented in the git rev-parse manual

<rev>^, e.g. HEAD^, v1.5.1^0
A suffix ^ to a revision parameter means the first parent of that commit object. ^<n> means the n-th parent (i.e. <rev>^ is equivalent to <rev>^1). As a special rule, <rev>^0 means the commit itself and is used when <rev> is the object name of a tag object that refers to a commit object.

so before invoking git reset, HEAD^ (or HEAD^1) was b7e7176 and HEAD^2 was c7256de, i.e., respectively the first and second parents of the merge commit.

Be careful with git reset --hard because it can destroy work.

This is a solution with recursion:

obj = {_x000D_
  a: { b: { c: { d: ['1', '2'] } } },_x000D_
  e: 'Saeid'_x000D_
}_x000D_
const Clone = function (obj) {_x000D_
  _x000D_
  const container = Array.isArray(obj) ? [] : {}_x000D_
  const keys  = Object.keys(obj)_x000D_
   _x000D_
  for (let i = 0; i < keys.length; i++) {_x000D_
    const key = keys[i]_x000D_
    if(typeof obj[key] == 'object') {_x000D_
      container[key] = Clone(obj[key])_x000D_
    }_x000D_
    else_x000D_
      container[key] = obj[key].slice()_x000D_
  }_x000D_
  _x000D_
  return container_x000D_
}_x000D_
 console.log(Clone(obj))

use this command php artisan migrate --path=/database/migrations/my_migration.php it worked for me..

Well, you have some options.

You could configure sudo to not prompt for a password. This is not recommended, due to the security risks.

You could write an expect script to read the password and supply it to sudo when required, but that's clunky and fragile.

I would recommend designing the script to run as root and drop its privileges whenever they're not needed. Simply have it sudo -u someotheruser command for the commands that don't require root.

(If they have to run specifically as the user invoking the script, then you could have the script save the uid and invoke a second script via sudo with the id as an argument, so it knows who to su to..)

var uniq = allvalues.GroupBy(x => x.Id).Select(y=>y.First()).Distinct();

Easy and simple

If you use EXIT_SUCCESS, your code will be more portable.

http://www.dreamincode.net/forums/topic/57495-return-0-vs-return-exit-success/

In my understanding Google wants Android to handle memory management and shutting down the apps. If you must exit the app from code, it might be beneficial to ask Android to run garbage collector.

@Override
public void onBackPressed(){
    System.gc();
    System.exit(0);
}

You can also add finish() to the code, but it is probably redundant, if you also do System.exit(0)

Here is my utility function for UTF8, which can be replaced with ASCII if desired:

    public static byte[] MD5Hash(string message)
    {
        return MD5.Create().ComputeHash(Encoding.UTF8.GetBytes(message));
    }

Dynatrace AJAX Edition shows you the exact sequence of page loading, parsing and execution.

I would strongly suggest checking out pyquery. It uses jquery-like (aka css-like) syntax which makes things really easy for those coming from that background.

For your case, it would be something like:

from pyquery import *

html = PyQuery(url='http://www.example.com/')
trs = html('table.spad tbody tr')

for tr in trs:
  tds = tr.getchildren()
  print tds[1].text, tds[2].text

Output:

5:16 AM 9:28 PM
5:15 AM 9:30 PM
5:13 AM 9:31 PM
5:12 AM 9:33 PM
5:11 AM 9:34 PM
5:10 AM 9:35 PM
5:09 AM 9:37 PM

If you're using WPF there is a LoadCompleted event.

If it's Windows.Forms, the DocumentCompleted event should be the correct one. If the page you're loading has frames, your WebBrowser control will fire the DocumentCompleted event for each frame (see here for more details). I would suggest checking the IsBusy property each time the event is fired and if it is false then your page is fully done loading.

You probably are looking for an ExpandableListView which has headers (groups) to separate items (childs).

Nice tutorial on the subject: here.

use like this :-

gridview1.DataSource = ds.Tables[0]; <-- Use index or your table name which you want to bind
gridview1.DataBind();

I hope it helps!!

Just use this acl cmd, next time the files inside var are created it will have the r/w/x permission for www-data user.

cd var 
rm -rf *
cd ..
setfacl -d -m u:www-data:rwx var

Cmd explanation:

setfacl -> Set acl command    
-d -> default behavior    
-m -> modify 
u:www-data: -> for user 
rwx -> adding permissions  
var -> on the folder

Use like this:

String myString = String(n);

You can find more examples here.

Use removeAttr...

$("option:selected").removeAttr("selected");

Or Prop

$("option:selected").prop("selected", false)

You can use : Query grouping allows you to create groups of WHERE clauses by enclosing them in parentheses. This will allow you to create queries with complex WHERE clauses. Nested groups are supported. Example:

$this->db->select('*')->from('my_table')
        ->group_start()
                ->where('a', 'a')
                ->or_group_start()
                        ->where('b', 'b')
                        ->where('c', 'c')
                ->group_end()
        ->group_end()
        ->where('d', 'd')
->get();

https://www.codeigniter.com/userguide3/database/query_builder.html#query-grouping

Include javascript using script tags just before your ending body tag. Preferably you will want to put it in a separate file and link to it to keep things a little more organized and easier to read. Theres a simple article here that will show you how http://www.selftaughtweb.com/how-to-include-javascript/

Not sure why nobody posted an actual SVG answer. Here is an SVG rectangle with rounded corners (radius 3) on the top:

<svg:path d="M0,0 L0,27 A3,3 0 0,0 3,30 L7,30 A3,3 0 0,0 10,27 L10,0 Z" />

This is a Move To (M), Line To (L), Arc To (A), Line To (L), Arc To (A), Line To (L), Close Path (Z).

The comma-delimited numbers are absolute coordinates. The arcs are defined with additional parameters specifying the radius and type of arc. This could also be accomplished with relative coordinates (use lower-case letters for L and A).

The complete reference for those commands is on the W3C SVG Paths page, and additional reference material on SVG paths can be found in this article.

For #include "" a compiler normally searches the folder of the file which contains that include and then the other folders. For #include <> the compiler does not search the current file's folder.

To determine if the array is sparse, it may help to get a proportion of nan values

np.isnan(ndarr).sum() / ndarr.size

If that proportion exceeds a threshold, then use a sparse array, e.g. - https://sparse.pydata.org/en/latest/

I wrote a little bash onliner that you can write to a script to get a friendly output:

mysql_references_to:

mysql -uUSER -pPASS -A DB_NAME -se "USE information_schema; SELECT * FROM KEY_COLUMN_USAGE WHERE REFERENCED_TABLE_NAME = '$1' AND REFERENCED_COLUMN_NAME = 'id'\G" | sed 's/^[ \t]*//;s/[ \t]*$//' |egrep "\<TABLE_NAME|\<COLUMN_NAME" |sed 's/TABLE_NAME: /./g' |sed 's/COLUMN_NAME: //g' | paste -sd "," -| tr '.' '\n' |sed 's/,$//' |sed 's/,/./'

So the execution: mysql_references_to transaccion (where transaccion is a random table name) gives an output like this:

carrito_transaccion.transaccion_id
comanda_detalle.transaccion_id
comanda_detalle_devolucion.transaccion_positiva_id
comanda_detalle_devolucion.transaccion_negativa_id
comanda_transaccion.transaccion_id
cuenta_operacion.transaccion_id
...

Revisit all your queries, maybe you have some query that select without ROWLOCK/FOR UPDATE hint from the same table you have SELECT FOR UPDATE.

MSSQL often escalates those row locks to page-level locks (even table-level locks, if you don't have index on field you are querying), see this explanation. Since you ask for FOR UPDATE, i could assume that you need transacion-level(e.g. financial, inventory, etc) robustness. So the advice on that site is not applicable to your problem. It's just an insight why MSSQL escalates locks.

If you are already using MSSQL 2005(and up), they are MVCC-based, i think you should have no problem with row-level lock using ROWLOCK/UPDLOCK hint. But if you are already using MSSQL 2005 and up, try to check some of your queries which query the same table you want to FOR UPDATE if they escalate locks by checking the fields on their WHERE clause if they have index.

P.S.
I'm using PostgreSQL, it also uses MVCC have FOR UPDATE, i don't encounter same problem. Lock escalations is what MVCC solves, so i would be surprised if MSSQL 2005 still escalate locks on table with WHERE clauses that doesn't have index on its fields. If that(lock escalation) is still the case for MSSQL 2005, try to check the fields on WHERE clauses if they have index.

Disclaimer: my last use of MSSQL is version 2000 only.

The issue with the "one thread per request" model for a server is that they don't scale well for several scenarios compared to the event loop thread model.

Typically, in I/O intensive scenarios the requests spend most of the time waiting for I/O to complete. During this time, in the "one thread per request" model, the resources linked to the thread (such as memory) are unused and memory is the limiting factor. In the event loop model, the loop thread selects the next event (I/O finished) to handle. So the thread is always busy (if you program it correctly of course).

The event loop model as all new things seems shiny and the solution for all issues but which model to use will depend on the scenario you need to tackle. If you have an intensive I/O scenario (like a proxy), the event base model will rule, whereas a CPU intensive scenario with a low number of concurrent processes will work best with the thread-based model.

In the real world most of the scenarios will be a bit in the middle. You will need to balance the real need for scalability with the development complexity to find the correct architecture (e.g. have an event base front-end that delegates to the backend for the CPU intensive tasks. The front end will use little resources waiting for the task result.) As with any distributed system it requires some effort to make it work.

If you are looking for the silver bullet that will fit with any scenario without any effort, you will end up with a bullet in your foot.

To rotate a DIV we can add some CSS that, well, rotates the DIV using CSS transform rotate.

To toggle the rotation we can keep a flag, a simple variable with a boolean value that tells us what way to rotate.

var rotated = false;

document.getElementById('button').onclick = function() {
    var div = document.getElementById('div'),
        deg = rotated ? 0 : 66;

    div.style.webkitTransform = 'rotate('+deg+'deg)'; 
    div.style.mozTransform    = 'rotate('+deg+'deg)'; 
    div.style.msTransform     = 'rotate('+deg+'deg)'; 
    div.style.oTransform      = 'rotate('+deg+'deg)'; 
    div.style.transform       = 'rotate('+deg+'deg)'; 

    rotated = !rotated;
}

var rotated = false;_x000D_
_x000D_
document.getElementById('button').onclick = function() {_x000D_
    var div = document.getElementById('div'),_x000D_
        deg = rotated ? 0 : 66;_x000D_
_x000D_
    div.style.webkitTransform = 'rotate('+deg+'deg)'; _x000D_
    div.style.mozTransform    = 'rotate('+deg+'deg)'; _x000D_
    div.style.msTransform     = 'rotate('+deg+'deg)'; _x000D_
    div.style.oTransform      = 'rotate('+deg+'deg)'; _x000D_
    div.style.transform       = 'rotate('+deg+'deg)'; _x000D_
    _x000D_
    rotated = !rotated;_x000D_
}

#div {_x000D_
    position:relative; _x000D_
    height: 200px; _x000D_
    width: 200px; _x000D_
    margin: 30px;_x000D_
    background: red;_x000D_
}

<button id="button">rotate</button>_x000D_
<br /><br />_x000D_
<div id="div"></div>

To add some animation to the rotation all we have to do is add CSS transitions

div {
    -webkit-transition: all 0.5s ease-in-out;
    -moz-transition: all 0.5s ease-in-out;
    -o-transition: all 0.5s ease-in-out;
    transition: all 0.5s ease-in-out;
}

var rotated = false;_x000D_
_x000D_
document.getElementById('button').onclick = function() {_x000D_
    var div = document.getElementById('div'),_x000D_
        deg = rotated ? 0 : 66;_x000D_
_x000D_
    div.style.webkitTransform = 'rotate('+deg+'deg)'; _x000D_
    div.style.mozTransform    = 'rotate('+deg+'deg)'; _x000D_
    div.style.msTransform     = 'rotate('+deg+'deg)'; _x000D_
    div.style.oTransform      = 'rotate('+deg+'deg)'; _x000D_
    div.style.transform       = 'rotate('+deg+'deg)'; _x000D_
    _x000D_
    rotated = !rotated;_x000D_
}

#div {_x000D_
    position:relative; _x000D_
    height: 200px; _x000D_
    width: 200px; _x000D_
    margin: 30px;_x000D_
    background: red;_x000D_
    -webkit-transition: all 0.5s ease-in-out;_x000D_
    -moz-transition: all 0.5s ease-in-out;_x000D_
    -o-transition: all 0.5s ease-in-out;_x000D_
    transition: all 0.5s ease-in-out;_x000D_
}

<button id="button">rotate</button>_x000D_
<br /><br />_x000D_
<div id="div"></div>

Another way to do it is using classes, and setting all the styles in a stylesheet, thus keeping them out of the javascript

document.getElementById('button').onclick = function() {
    document.getElementById('div').classList.toggle('rotated');
}

document.getElementById('button').onclick = function() {_x000D_
    document.getElementById('div').classList.toggle('rotated');_x000D_
}

#div {_x000D_
    position:relative; _x000D_
    height: 200px; _x000D_
    width: 200px; _x000D_
    margin: 30px;_x000D_
    background: red;_x000D_
    -webkit-transition: all 0.5s ease-in-out;_x000D_
    -moz-transition: all 0.5s ease-in-out;_x000D_
    -o-transition: all 0.5s ease-in-out;_x000D_
    transition: all 0.5s ease-in-out;_x000D_
}_x000D_
_x000D_
#div.rotated {_x000D_
    -webkit-transform : rotate(66deg); _x000D_
    -moz-transform : rotate(66deg); _x000D_
    -ms-transform : rotate(66deg); _x000D_
    -o-transform : rotate(66deg); _x000D_
    transform : rotate(66deg); _x000D_
}

<button id="button">rotate</button>_x000D_
<br /><br />_x000D_
<div id="div"></div>

I don't think you can use fractional seconds with to_date or the DATE type in Oracle. I think you need to_timestamp which returns a TIMESTAMP type.

This can happen also when you have identical function names on different routes.

Yes, there are a few of them.

• ReDoc [Article on swagger.io] [GitHub] [demo] - Reinvented OpenAPI/Swagger-generated API Reference Documentation (I'm the author)

• OpenAPI GUI [GitHub] [demo] - GUI / visual editor for creating and editing OpenApi / Swagger definitions (has OpenAPI 3 support)

• Responsive Fork of SwaggerUI [GitHub] [demo]

• SwaggerUI-Angular [GitHub] [demo] - An angularJS implementation of Swagger UI

• angular-swagger-ui-material [GitHub] [demo] - Material Design template for angular-swager-ui

Hosted solutions that support swagger:

• Apiary - can import from swagger
• Readme.io - can import from swagger
• Lucybot console - supports swagger natively
• Postman - can import from swagger
• Stoplight - supports swagger natively - editing and reading

Check the following articles for more details:

• Ultimate Guide to 30+ API Documentation Solutions
• Turning Contracts into Beautiful Documentation (focused mainly on Swagger)
• An evaluation of auto-generated REST API Documentation UIs (focused mainly on Swagger)
• Free and Open Source API Documentation Tools

You can try this!

python manage.py migrate --run-syncdb

I have the same problem with Django 1.9 and 1.10. This code works!

you have to put this in web.config :

<system.web.extensions>
    <scripting>
      <webServices>
        <jsonSerialization maxJsonLength="50000000" />
      </webServices>
    </scripting>
  </system.web.extensions>

The accepted answer works great if you just want to use a different context in your partial. However, it doesn't let you reference any of the parent context. To pass in multiple arguments, you need to write your own helper. Here's a working helper for Handlebars 2.0.0 (the other answer works for versions <2.0.0):

Handlebars.registerHelper('renderPartial', function(partialName, options) {
    if (!partialName) {
        console.error('No partial name given.');
        return '';
    }
    var partial = Handlebars.partials[partialName];
    if (!partial) {
        console.error('Couldnt find the compiled partial: ' + partialName);
        return '';
    }
    return new Handlebars.SafeString( partial(options.hash) );
});

Then in your template, you can do something like:

{{renderPartial 'myPartialName' foo=this bar=../bar}}

And in your partial, you'll be able to access those values as context like:

<div id={{bar.id}}>{{foo}}</div>

SELECT A.ABC_ID, A.VAL FROM A WHERE NOT EXISTS 
   (SELECT * FROM B WHERE B.ABC_ID = A.ABC_ID AND B.VAL = A.VAL)

or

SELECT A.ABC_ID, A.VAL FROM A WHERE VAL NOT IN 
    (SELECT VAL FROM B WHERE B.ABC_ID = A.ABC_ID)

or

SELECT A.ABC_ID, A.VAL LEFT OUTER JOIN B 
    ON A.ABC_ID = B.ABC_ID AND A.VAL = B.VAL FROM A WHERE B.VAL IS NULL

Please note that these queries do not require that ABC_ID be in table B at all. I think that does what you want.

An xmlns is a unique identifier within the document - it doesn't have to be a URI to the schema:

XML namespaces provide a simple method for qualifying element and attribute names used in Extensible Markup Language documents by associating them with namespaces identified by URI references.

xsi:schemaLocation is supposed to give a hint as to the actual schema location:

can be used in a document to provide hints as to the physical location of schema documents which may be used for assessment.

If you are doing with the postman, Please confirm these stuff when you are requesting API

Using just jQuery, vanilla Javascript, and the table2CSV library:

export-to-html-table-as-csv-file-using-jquery

Put this code into a script to be loaded in the head section:

 $(document).ready(function () {
    $('table').each(function () {
        var $table = $(this);

        var $button = $("<button type='button'>");
        $button.text("Export to spreadsheet");
        $button.insertAfter($table);

        $button.click(function () {
            var csv = $table.table2CSV({
                delivery: 'value'
            });
            window.location.href = 'data:text/csv;charset=UTF-8,' 
            + encodeURIComponent(csv);
        });
    });
})

Notes:

Requires jQuery and table2CSV: Add script references to both libraries before the script above.

The table selector is used as an example, and can be adjusted to suit your needs.

It only works in browsers with full Data URI support: Firefox, Chrome and Opera, not in IE, which only supports Data URIs for embedding binary image data into a page.

For full browser compatibility you would have to use a slightly different approach that requires a server side script to echo the CSV.

You can pass variables using this...

$status =1;
 $info = JOBS::where(function($query) use ($status){        
         $query->where('status',$status);
         })->get();
print_r($info);

It would be very useful if it were possible to define constructors in interfaces.

Given that an interface is a contract that must be used in the specified way. The following approach might be a viable alternative for some scenarios:

public interface IFoo {

    /// <summary>
    /// Initialize foo.
    /// </summary>
    /// <remarks>
    /// Classes that implement this interface must invoke this method from
    /// each of their constructors.
    /// </remarks>
    /// <exception cref="InvalidOperationException">
    /// Thrown when instance has already been initialized.
    /// </exception>
    void Initialize(int a);

}

public class ConcreteFoo : IFoo {

    private bool _init = false;

    public int b;

    // Obviously in this case a default value could be used for the
    // constructor argument; using overloads for purpose of example

    public ConcreteFoo() {
        Initialize(42);
    }

    public ConcreteFoo(int a) {
        Initialize(a);
    }

    public void Initialize(int a) {
        if (_init)
            throw new InvalidOperationException();
        _init = true;

        b = a;
    }

}

Yes there is

int temp;
int.TryParse("141241", out temp) = true
int.TryParse("232a23", out temp) = false
int.TryParse("12412a", out temp) = false

Hope this helps.

Correct me if I am wrong, but it seems that Facebook deprecated the Activity Feed plugin. Additionally there does not seem to be any substitute plugin for activity anymore.

Here is the link: https://developers.facebook.com/docs/plugins/activity

use contentPadding, it will reduce the textbox or dropdown list height

InputDecorator(
                  decoration: InputDecoration(
                      errorStyle: TextStyle(
                          color: Colors.redAccent, fontSize: 16.0),
                      hintText: 'Please select expense',
                      border: OutlineInputBorder(
                        borderRadius: BorderRadius.circular(1.0),
                      ),
                      contentPadding: EdgeInsets.all(8)),//Add this edge option
                  child: DropdownButton(
                    isExpanded: true,
                    isDense: true,
                    itemHeight: 50.0,

                    hint: Text(
                        'Please choose a location'), // Not necessary for Option 1
                    value: _selectedLocation,
                    onChanged: (newValue) {
                      setState(() {
                        _selectedLocation = newValue;
                      });
                    },
                    items: citys.map((location) {
                      return DropdownMenuItem(
                        child: new Text(location.name),
                        value: location.id,
                      );
                    }).toList(),
                  ),
                ),

std::string a = "Hello ";
std::string b = "World ";
std::string c = a;
c.append(b);

One way I have gotten around this is by create a static class for instances. I used it a lot in AS3 I has worked great for me in android development too.

Config.java

public final class Config {
    public static MyApp context = null;
}

MyApp.java

public class MyApp extends Activity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        Config.context = this;
    }
    ...
}

You can then access the context or by using Config.context

LocationManager locationManager;
String context = Context.LOCATION_SERVICE;
locationManager = Config.context.getSystemService(context);

Here is a cross browser solution with pure JavaScript (Source):

var width = window.innerWidth
|| document.documentElement.clientWidth
|| document.body.clientWidth;

var height = window.innerHeight
|| document.documentElement.clientHeight
|| document.body.clientHeight;

Right-click, then "Open link in new tab"

edit : you can also double-click, it has the same effect

You might use Form tag with action attribute to submit the mailto.

Here is an example:

<form method="post" action="mailto:[email protected]" >
<input type="submit" value="Send Email" /> 
</form>

If you facing grant permission access denied problem, you can try mysql to fix the problem:

grant all privileges on . to root@'localhost' identified by 'Your password';

grant all privileges on . to root@'IP ADDRESS' identified by 'Your password?';

your can try this on any mysql user, its working.

Use below command to login mysql with iP address.

mysql -h 10.0.0.23 -u root -p

You can use .reset() on your form.

$(".myform")[0].reset();

As Pies say you can use cURL. You can get cURL to only give you the headers, and not the body, which might make it faster. A bad domain could always take a while because you will be waiting for the request to time-out; you could probably change the timeout length using cURL.

Here is example:

function remoteFileExists($url) {
    $curl = curl_init($url);

    //don't fetch the actual page, you only want to check the connection is ok
    curl_setopt($curl, CURLOPT_NOBODY, true);

    //do request
    $result = curl_exec($curl);

    $ret = false;

    //if request did not fail
    if ($result !== false) {
        //if request was ok, check response code
        $statusCode = curl_getinfo($curl, CURLINFO_HTTP_CODE);  

        if ($statusCode == 200) {
            $ret = true;   
        }
    }

    curl_close($curl);

    return $ret;
}

$exists = remoteFileExists('http://stackoverflow.com/favicon.ico');
if ($exists) {
    echo 'file exists';
} else {
    echo 'file does not exist';   
}

You cannot initialize an array like that. In addition to what others have suggested, you can do :

data[0] = 10;
data[1] = 20;
...
data[9] = 91;

Actually one can always create an ordinary list of numpy arrays and convert it later.

In [1]: import numpy as np

In [2]: a = np.array([[1,2],[3,4]])

In [3]: b = np.array([[1,2],[3,4]])

In [4]: l = [a]

In [5]: l.append(b)

In [6]: l = np.array(l)

In [7]: l.shape
Out[7]: (2, 2, 2)

In [8]: l
Out[8]: 
array([[[1, 2],
        [3, 4]],

       [[1, 2],
        [3, 4]]])

ACID properties are very old and important concept of database theory. I know that you can find lots of posts on this topic, but still I would like to start share answer on this because this is very important topic of RDBMS.

Database System plays with lots of different types of transactions where all transaction has certain characteristic. This characteristic is known ACID Properties. ACID Properties take grantee for all database transactions to accomplish all tasks.

Atomicity : Either commit all or nothing.

Consistency : Make consistent record in terms of validate all rule and constraint of transaction.

Isolation : Make sure that two transaction is unaware to each other.

Durability : committed data stored forever. Reference taken from this article:

The best approach would be to map a unique ID to each enum type, thus avoiding the pitfalls of ORDINAL and STRING. See this post which outlines 5 ways you can map an enum.

Taken from the link above:

1&2. Using @Enumerated

There are currently 2 ways you can map enums within your JPA entities using the @Enumerated annotation. Unfortunately both EnumType.STRING and EnumType.ORDINAL have their limitations.

If you use EnumType.String then renaming one of your enum types will cause your enum value to be out of sync with the values saved in the database. If you use EnumType.ORDINAL then deleting or reordering the types within your enum will cause the values saved in the database to map to the wrong enums types.

Both of these options are fragile. If the enum is modified without performing a database migration, you could jeopodise the integrity of your data.

3. Lifecycle Callbacks

A possible solution would to use the JPA lifecycle call back annotations, @PrePersist and @PostLoad. This feels quite ugly as you will now have two variables in your entity. One mapping the value stored in the database, and the other, the actual enum.

4. Mapping unique ID to each enum type

The preferred solution is to map your enum to a fixed value, or ID, defined within the enum. Mapping to predefined, fixed value makes your code more robust. Any modification to the order of the enums types, or the refactoring of the names, will not cause any adverse effects.

5. Using Java EE7 @Convert

If you are using JPA 2.1 you have the option to use the new @Convert annotation. This requires the creation of a converter class, annotated with @Converter, inside which you would define what values are saved into the database for each enum type. Within your entity you would then annotate your enum with @Convert.

My preference: (Number 4)

The reason why I prefer to define my ID's within the enum as oppose to using a converter, is good encapsulation. Only the enum type should know of its ID, and only the entity should know about how it maps the enum to the database.

See the original post for the code example.

With Lodash you can create a template and you can do that following way:

    <div class="container">
        <div class="row justify-content-center">
            <div class="col-12">
                <table id="tblEntAttributes" class="table">
                    <tbody>
                        <tr>
                            <td>
                                chkboxId
                            </td>
                            <td>
                               chkboxValue
                            </td>
                            <td>
                                displayName
                            </td>
                            <td>
                               logicalName
                            </td>
                            <td>
                                dataType
                            </td>
                        </tr>
                    </tbody>
                </table>
                <button class="btn btn-primary" id="test">appendTo</button>
            </div>
        </div>
     </div>

And here goes the javascript:

        var count = 1;
        window.addEventListener('load', function () {
            var compiledRow = _.template("<tr><td><input type=\"checkbox\" id=\"<%= chkboxId %>\" value=\"<%= chkboxValue %>\"></td><td><%= displayName %></td><td><%= logicalName %></td><td><%= dataType %></td><td><input type=\"checkbox\" id=\"chkAllPrimaryAttrs\" name=\"chkAllPrimaryAttrs\" value=\"chkAllPrimaryAttrs\"></td><td><input type=\"checkbox\" id=\"chkAllPrimaryAttrs\" name=\"chkAllPrimaryAttrs\" value=\"chkAllPrimaryAttrs\"></td></tr>");
            document.getElementById('test').addEventListener('click', function (e) {
                var ajaxData = { 'chkboxId': 'chkboxId-' + count, 'chkboxValue': 'chkboxValue-' + count, 'displayName': 'displayName-' + count, 'logicalName': 'logicalName-' + count, 'dataType': 'dataType-' + count };
                var tableRowData = compiledRow(ajaxData);
                $("#tblEntAttributes tbody").append(tableRowData);
                count++;
            });
        });

Here it is in jsbin

Here is an example of how to use strtok borrowed from MSDN.

And the relevant bits, you need to call it multiple times. The token char* is the part you would stuff into an array (you can figure that part out).

char string[] = "A string\tof ,,tokens\nand some  more tokens";
char seps[]   = " ,\t\n";
char *token;

int main( void )
{
    printf( "Tokens:\n" );
    /* Establish string and get the first token: */
    token = strtok( string, seps );
    while( token != NULL )
    {
        /* While there are tokens in "string" */
        printf( " %s\n", token );
        /* Get next token: */
        token = strtok( NULL, seps );
    }
}

You should use labels attribute inside plot function and the value of this attribute should be the vector containing the values that you want for each point to have.

You'll have to give pthread_create a function that matches the signature it's looking for. What you're passing won't work.

You can implement whatever static function you like to do this, and it can reference an instance of c and execute what you want in the thread. pthread_create is designed to take not only a function pointer, but a pointer to "context". In this case you just pass it a pointer to an instance of c.

For instance:

static void* execute_print(void* ctx) {
    c* cptr = (c*)ctx;
    cptr->print();
    return NULL;
}


void func() {

    ...

    pthread_create(&t1, NULL, execute_print, &c[0]);

    ...
}

<div style="float: left;margin-right:10px">
  <table>
    <tr>
      <td>..</td>
    </tr>
  </table>
</div>
<div style="float: left">
  <table>
    <tr>
      <td>..</td>
    </tr>
  </table>
</div>

Do check the man pages of your ping command before trying some of these examples out (always good practice anyway). For Ubuntu 16 (for example) the accepted answer doesn't work as the -n 3 fails (this isn't the count of packets anymore, -n denotes not converting the IP address to a hostname).

Following the request of the OP, a potential alternative function would be as follows:

function checkPing($ip){
    $ping = trim(`which ping`);
    $ll = exec($ping . '-n -c2 ' . $ip, $output, $retVar);
    if($retVar == 0){
        echo "The IP address, $ip, is alive";
        return true;
    } else {
        echo "The IP address, $ip, is dead";
        return false;
    }
}

$percentage = 50;
$totalWidth = 350;

$new_width = ($percentage / 100) * $totalWidth;

Have you tried using the "auto-fill" in Excel?

If you have an entire column of items you put the formula in the first cell, make sure you get the result you desire and then you can do the copy/paste, or use auto fill which is an option that sits on the bottom right corner of the cell.

You go to that corner in the cell and once your cursor changes to a "+", you can double-click on it and it should populate all the way down to the last entry (as long as there are no populated cells, that is).

First off, your quoted code is not JSON. Your code is JavaScript object literal notation. JSON is a subset of that designed for easier parsing.

Your code defines an object (data) containing an array (items) of objects (each with an id, name, and type).

You don't need or want jQuery for this, just JavaScript.

Adding an item:

data.items.push(
    {id: "7", name: "Douglas Adams", type: "comedy"}
);

That adds to the end. See below for adding in the middle.

Removing an item:

There are several ways. The splice method is the most versatile:

data.items.splice(1, 3); // Removes three items starting with the 2nd,
                         // ("Witches of Eastwick", "X-Men", "Ordinary People")

splice modifies the original array, and returns an array of the items you removed.

Adding in the middle:

splice actually does both adding and removing. The signature of the splice method is:

removed_items = arrayObject.splice(index, num_to_remove[, add1[, add2[, ...]]]);

• index - the index at which to start making changes
• num_to_remove - starting with that index, remove this many entries
• addN - ...and then insert these elements

So I can add an item in the 3rd position like this:

data.items.splice(2, 0,
    {id: "7", name: "Douglas Adams", type: "comedy"}
);

What that says is: Starting at index 2, remove zero items, and then insert this following item. The result looks like this:

var data = {items: [
    {id: "1", name: "Snatch", type: "crime"},
    {id: "2", name: "Witches of Eastwick", type: "comedy"},
    {id: "7", name: "Douglas Adams", type: "comedy"},     // <== The new item
    {id: "3", name: "X-Men", type: "action"},
    {id: "4", name: "Ordinary People", type: "drama"},
    {id: "5", name: "Billy Elliot", type: "drama"},
    {id: "6", name: "Toy Story", type: "children"}
]};

You can remove some and add some at once:

data.items.splice(1, 3,
    {id: "7", name: "Douglas Adams", type: "comedy"},
    {id: "8", name: "Dick Francis", type: "mystery"}
);

...which means: Starting at index 1, remove three entries, then add these two entries. Which results in:

var data = {items: [
    {id: "1", name: "Snatch", type: "crime"},
    {id: "7", name: "Douglas Adams", type: "comedy"},
    {id: "8", name: "Dick Francis", type: "mystery"},
    {id: "4", name: "Ordinary People", type: "drama"},
    {id: "5", name: "Billy Elliot", type: "drama"},
    {id: "6", name: "Toy Story", type: "children"}
]};

In my case, trying npm start -- --reset-cache and getting a bunch more errors, I deleted (uninstalled) the app from iOS and Android and yarn ios yarn android did the trick. (If this does not work for you, please kindly DO NOT give me a thumb down. Encourage people to speak, do not discourage them.)

I also found a workaround which seems to work fine with no warnings:

<resources>
    <item name="the_name" type="dimen">255%</item>
    <item name="another_name" type="dimen">15%</item>
</resources>

Then:

// theName = 2.55f
float theName = getResources().getFraction(R.dimen.the_name, 1, 1);
// anotherName = 0.15f
float anotherName = getResources().getFraction(R.dimen.another_name, 1, 1);

Warning : it only works when you use the dimen from Java code not from xml

A)

String str = "a string";
int length = str.length( ); // length == 8

http://download.oracle.com/javase/7/docs/api/java/lang/String.html#length%28%29

edit

If you want to count the number of a specific type of characters in a String, then a simple method is to iterate through the String checking each index against your test case.

int charCount = 0;
char temp;

for( int i = 0; i < str.length( ); i++ )
{
    temp = str.charAt( i );

    if( temp.TestCase )
        charCount++;
}

where TestCase can be isLetter( ), isDigit( ), etc.

Or if you just want to count everything but spaces, then do a check in the if like temp != ' '

B)

String str = "a string";
char atPos0 = str.charAt( 0 ); // atPos0 == 'a'

http://download.oracle.com/javase/7/docs/api/java/lang/String.html#charAt%28int%29

updated based on Xbello comment:

string = my_string.rstrip('\r\n')

read more here

You can get by this date:

DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
print(dateFormat.format(new Date());

Basically you just have to map the procedure to the entity using Stored Procedure Mapping.

Once mapped, you use the regular method for adding an item in EF, and it will use your stored procedure instead.

Please see: This Link for a walkthrough. The result will be adding an entity like so (which will actually use your stored procedure)

using (var ctx = new SchoolDBEntities())
        {
            Student stud = new Student();
            stud.StudentName = "New sp student";
            stud.StandardId = 262;

            ctx.Students.Add(stud);
            ctx.SaveChanges();
        }

I think the key here is understanding the difference between a Class and an Object. An Object is an instance of a Class. But in a fully object-oriented language, a Class is also an Object. So calling .class gets the reference to the Class object of that Class, which can then be manipulated.

Stackoverflow uses such function to determine the age of a user.

Calculate age in C#

The given answer is

DateTime now = DateTime.Today;
int age = now.Year - bday.Year;
if (now < bday.AddYears(age)) age--;

So your helper method would look like

public static string Age(this HtmlHelper helper, DateTime birthday)
{
    DateTime now = DateTime.Today;
    int age = now.Year - birthday.Year;
    if (now < birthday.AddYears(age)) age--;

    return age.ToString();
}

Today, I use a different version of this function to include a date of reference. This allow me to get the age of someone at a future date or in the past. This is used for our reservation system, where the age in the future is needed.

public static int GetAge(DateTime reference, DateTime birthday)
{
    int age = reference.Year - birthday.Year;
    if (reference < birthday.AddYears(age)) age--;

    return age;
}

Tested in IE7 - 9 and Firefox: http://jsfiddle.net/WCaKg/. Markup:

<ul>
    <li>&lt;li&gt;</li>

    <li>&lt;li&gt;</li>

    <li>&lt;li&gt;

        <ul>
            <li>&lt;li&gt;</li>

            <li>&lt;li&gt;</li>

            <li>&lt;li&gt;</li>

            <li>&lt;li&gt;</li>
        </ul>
    </li>

    <li>&lt;li&gt;</li>

    <li>&lt;li&gt;</li>

    <li>&lt;li&gt;</li>
</ul>

CSS:

* {
  margin: 0;
  padding: 0;
}

body {
  font: 200%/1.5 Optima, 'Lucida Grande', Lucida, 'Lucida Sans Unicode', sans-serif;
}

ul {
  width: 9em;
  list-style-type: none;
  font-size: 0.75em;
}

li {
  float: left;
  margin: 0 4px 4px 0;
  background: #60c;
  background: rgba(102, 0, 204, 0.66);
  border: 4px solid #60c;
  color: #fff;
}
li:hover {
  position: relative;
}

ul ul {
  z-index: 1;
  position: absolute;
  left: -999em;
  width: auto;
  background: #ccc;
  background: rgba(204, 204, 204, 0.33);
}

li:hover ul {
  top: 2em;
  left: 3px;
}

li li {
  margin: 0 0 3px 0;
  background: #909;
  background: rgba(153, 0, 153, 0.66);
  border: 3px solid #909;
}

Yes, it is possible.

This is pure C, no macros preprocessing. It has inheritance, polymorphism, data encapsulation (including private data). It does not have equivalent protected qualifier, wich means private data is private down the inheritance chain too.

#include "triangle.h"
#include "rectangle.h"
#include "polygon.h"

#include <stdio.h>

int main()
{
    Triangle tr1= CTriangle->new();
    Rectangle rc1= CRectangle->new();

    tr1->width= rc1->width= 3.2;
    tr1->height= rc1->height= 4.1;

    CPolygon->printArea((Polygon)tr1);

    printf("\n");

    CPolygon->printArea((Polygon)rc1);
}

/*output:
6.56
13.12
*/

Well there is 2 ways to change the location.href. Either you can write location.href = "y.html", which reloads the page or can use the history API which does not reload the page. I experimented with the first a lot recently.

If you open a child window and capture the load of the child page from the parent window, then different browsers behave very differently. The only thing that is common, that they remove the old document and add a new one, so for example adding readystatechange or load event handlers to the old document does not have any effect. Most of the browsers remove the event handlers from the window object too, the only exception is Firefox. In Chrome with Karma runner and in Firefox you can capture the new document in the loading readyState if you use unload + next tick. So you can add for example a load event handler or a readystatechange event handler or just log that the browser is loading a page with a new URI. In Chrome with manual testing (probably GreaseMonkey too) and in Opera, PhantomJS, IE10, IE11 you cannot capture the new document in the loading state. In those browsers the unload + next tick calls the callback a few hundred msecs later than the load event of the page fires. The delay is typically 100 to 300 msecs, but opera simetime makes a 750 msec delay for next tick, which is scary. So if you want a consistent result in all browsers, then you do what you want to after the load event, but there is no guarantee the location won't be overridden before that.

var uuid = "win." + Math.random();
var timeOrigin = new Date();
var win = window.open("about:blank", uuid, "menubar=yes,location=yes,resizable=yes,scrollbars=yes,status=yes");


var callBacks = [];
var uglyHax = function (){
    var done = function (){
        uglyHax();
        callBacks.forEach(function (cb){
            cb();
        });
    };
    win.addEventListener("unload", function unloadListener(){
        win.removeEventListener("unload", unloadListener); // Firefox remembers, other browsers don't
        setTimeout(function (){
            // IE10, IE11, Opera, PhantomJS, Chrome has a complete new document at this point
            // Chrome on Karma, Firefox has a loading new document at this point
            win.document.readyState; // IE10 and IE11 sometimes fails if I don't access it twice, idk. how or why
            if (win.document.readyState === "complete")
                done();
            else
                win.addEventListener("load", function (){
                    setTimeout(done, 0);
                });
        }, 0);
    });
};
uglyHax();


callBacks.push(function (){
    console.log("cb", win.location.href, win.document.readyState);
    if (win.location.href !== "http://localhost:4444/y.html")
        win.location.href = "http://localhost:4444/y.html";
    else
        console.log("done");
});
win.location.href = "http://localhost:4444/x.html";

If you run your script only in Firefox, then you can use a simplified version and capture the document in a loading state, so for example a script on the loaded page cannot navigate away before you log the URI change:

var uuid = "win." + Math.random();
var timeOrigin = new Date();
var win = window.open("about:blank", uuid, "menubar=yes,location=yes,resizable=yes,scrollbars=yes,status=yes");


var callBacks = [];
win.addEventListener("unload", function unloadListener(){
    setTimeout(function (){
        callBacks.forEach(function (cb){
            cb();
        });
    }, 0);
});


callBacks.push(function (){
    console.log("cb", win.location.href, win.document.readyState);
    // be aware that the page is in loading readyState, 
    // so if you rewrite the location here, the actual page will be never loaded, just the new one
    if (win.location.href !== "http://localhost:4444/y.html")
        win.location.href = "http://localhost:4444/y.html";
    else
        console.log("done");
});
win.location.href = "http://localhost:4444/x.html";

If we are talking about single page applications which change the hash part of the URI, or use the history API, then you can use the hashchange and the popstate events of the window respectively. Those can capture even if you move in history back and forward until you stay on the same page. The document does not changes by those and the page is not really reloaded.

In my case (I'm using typescript) I was trying to simulate response with fake data where the data is assigned later on. My first attempt was with:

let response = {status: 200, data: []};

and later, on the assignment of the fake data it starts complaining that it is not assignable to type 'never[]'. Then I defined the response like follows and it accepted it..

let dataArr: MyClass[] = [];
let response = {status: 200, data: dataArr};

and assigning of the fake data:

response.data = fakeData;

if you add an #include <algorithm> then you can use the for_each function and a lambda function like so:

for_each(data.begin(), data.end(), [](Student *it) 
{
    std::cout<<it->name;
});

you can read more about the algorithm library at https://en.cppreference.com/w/cpp/algorithm

and about lambda functions in cpp at https://docs.microsoft.com/en-us/cpp/cpp/lambda-expressions-in-cpp?view=vs-2019

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js">
</script>
<script>
$(document).ready(function(){
    $('#purpose').on('change', function() {
      if ( this.value == '1')
      //.....................^.......
      {
           $("#business_new").hide();
        $("#business").show();
      }
      else  if ( this.value == '2')
      {
          $("#business").hide();
        $("#business_new").show();
      }
       else  
      {
        $("#business").hide();
      }
    });
});
</script>
<body>
<select id='purpose'>
<option value="0">Personal use</option>
<option value="1">Business use</option>
<option value="2">Passing on to a client</option>
</select>
<div style='display:none;' id='business'>Business Name<br/>&nbsp;
<br/>&nbsp;
    <input type='text' class='text' name='business' value size='20' />
    <input type='text' class='text' name='business' value size='20' />
    <br/>
</div>
<div style='display:none;' id='business_new'>Business Name<br/>&nbsp;
<br/>&nbsp;
    <input type='text' class='text' name='business' value="1254" size='20' />
    <input type='text' class='text' name='business' value size='20' />
    <br/>
</div>
</body>

if(data.trim()==''){alert("Nothing Found");}

A little bit of history now. Among other languages, BCPL had a fairly major influence on C's early development. If you declared an array in BCPL with something like:

let V = vec 10

that actually allocated 11 words of memory, not 10. Typically V was the first, and contained the address of the immediately following word. So unlike C, naming V went to that location and picked up the address of the zeroeth element of the array. Therefore array indirection in BCPL, expressed as

let J = V!5

really did have to do J = !(V + 5) (using BCPL syntax) since it was necessary to fetch V to get the base address of the array. Thus V!5 and 5!V were synonymous. As an anecdotal observation, WAFL (Warwick Functional Language) was written in BCPL, and to the best of my memory tended to use the latter syntax rather than the former for accessing the nodes used as data storage. Granted this is from somewhere between 35 and 40 years ago, so my memory is a little rusty. :)

The innovation of dispensing with the extra word of storage and having the compiler insert the base address of the array when it was named came later. According to the C history paper this happened at about the time structures were added to C.

Note that ! in BCPL was both a unary prefix operator and a binary infix operator, in both cases doing indirection. just that the binary form included an addition of the two operands before doing the indirection. Given the word oriented nature of BCPL (and B) this actually made a lot of sense. The restriction of "pointer and integer" was made necessary in C when it gained data types, and sizeof became a thing.

This question is 12 years old but it still needs to be given a better answer. As few noted in the comments and contrarily to what all answers pretend it would certainly make sense to have static abstract methods in C#. As philosopher Daniel Dennett put it, a failure of imagination is not an insight into necessity. There is a common mistake in not realizing that C# is not only an OOP language. A pure OOP perspective on a given concept leads to a restricted and in the current case misguided examination. Polymorphism is not only about subtying polymorphism: it also includes parametric polymorphism (aka generic programming) and C# has been supporting this for a long time now. Within this additional paradigm, abstract classes (and most types) are not only used to type instances. They can also be used as bounds for generic parameters; something that has been understood by users of certain languages (like for example Haskell, but also more recently Scala, Rust or Swift) for years.

In this context you may want to do something like this:

void Catch<TAnimal>() where TAnimal : Animal
{
    string scientificName = TAnimal.ScientificName; // abstract static property
    Console.WriteLine($"Let's catch some {scientificName}");
    …
}

And here the capacity to express static members that can be specialized by subclasses totally makes sense!

Unfortunately C# does not allow abstract static members but I'd like to propose a pattern that can emulate them reasonably well. This pattern is not perfect (it imposes some restrictions on inheritance) but as far as I can tell it is typesafe.

The main idea is to associate an abstract companion class (here SpeciesFor<TAnimal>) to the one that should contain abstract members (here Animal):

public abstract class SpeciesFor<TAnimal> where TAnimal : Animal
{
    public static SpeciesFor<TAnimal> Instance { get { … } }

    // abstract "static" members

    public abstract string ScientificName { get; }
    
    …
}

public abstract class Animal { … }

Now we would like to make this work:

void Catch<TAnimal>() where TAnimal : Animal
{
    string scientificName = SpeciesFor<TAnimal>.Instance.ScientificName;
    Console.WriteLine($"Let's catch some {scientificName}");
    …
}

Of course we have two problems to solve:

1. How do we allow and force an implementer of a subclass of Animal to associate a specific instance of SpeciesFor<TAnimal> to this subclass?
2. How does the property SpeciesFor<TAnimal>.Instance retrieve this information?

Here is how we can solve 1:

public abstract class Animal<TSelf> where TSelf : Animal<TSelf>
{
    private Animal(…) {}
    
    public abstract class OfSpecies<TSpecies> : Animal<TSelf>
        where TSpecies : SpeciesFor<TSelf>, new()
    {
        protected OfSpecies(…) : base(…) { }
    }
    
    …
}

By making the constructor of Animal<TSelf> private we make sure that all its subclasses are also subclasses of inner class Animal<TSelf>.OfSpecies<TSpecies>. So these subclasses must specify a TSpecies type that has a new() bound.

For 2 we can provide the following implementation:

public abstract class SpeciesFor<TAnimal> where TAnimal : Animal<TAnimal>
{
    private static SpeciesFor<TAnimal> _instance;

    public static SpeciesFor<TAnimal> Instance => _instance ??= MakeInstance();

    private static SpeciesFor<TAnimal> MakeInstance()
    {
        Type t = typeof(TAnimal);
        while (true)
        {
            if (t.IsConstructedGenericType
                    && t.GetGenericTypeDefinition() == typeof(Animal<>.OfSpecies<>))
                return (SpeciesFor<TAnimal>)Activator.CreateInstance(t.GenericTypeArguments[1]);
            t = t.BaseType;
            if (t == null)
                throw new InvalidProgramException();
        }
    }

    // abstract "static" members

    public abstract string ScientificName { get; }
    
    …
}

How can we be sure that the reflection code inside MakeInstance() never throws? As we've already said, almost all classes within the hierarchy of Animal<TSelf> are also subclasses of Animal<TSelf>.OfSpecies<TSpecies>. So we know that for these classes a specific TSpecies must be provided. This type is also necessarily constructible thanks to constraint : new(). But this still leaves abstract types like Animal<Something> that have no associated species. Now we can convince ourself that the curiously recurring template pattern where TAnimal : Animal<TAnimal> makes it impossible to write SpeciesFor<Animal<Something>>.Instance as type Animal<Something> is never a subtype of Animal<Animal<Something>>.

Et voilà:

public class CatSpecies : SpeciesFor<Cat>
{
    // overriden "static" members

    public override string ScientificName => "Felis catus";
    public override Cat CreateInVivoFromDnaTrappedInAmber() { … }
    public override Cat Clone(Cat a) { … }
    public override Cat Breed(Cat a1, Cat a2) { … }
}

public class Cat : Animal<Cat>.OfSpecies<CatSpecies>
{
    // overriden members

    public override string CuteName { get { … } }
}

public class DogSpecies : SpeciesFor<Dog>
{
    // overriden "static" members

    public override string ScientificName => "Canis lupus familiaris";
    public override Dog CreateInVivoFromDnaTrappedInAmber() { … }
    public override Dog Clone(Dog a) { … }
    public override Dog Breed(Dog a1, Dog a2) { … }
}

public class Dog : Animal<Dog>.OfSpecies<DogSpecies>
{
    // overriden members

    public override string CuteName { get { … } }
}

public class Program
{
    public static void Main()
    {
        ConductCrazyScientificExperimentsWith<Cat>();
        ConductCrazyScientificExperimentsWith<Dog>();
        ConductCrazyScientificExperimentsWith<Tyranosaurus>();
        ConductCrazyScientificExperimentsWith<Wyvern>();
    }
    
    public static void ConductCrazyScientificExperimentsWith<TAnimal>()
        where TAnimal : Animal<TAnimal>
    {
        // Look Ma! No animal instance polymorphism!
        
        TAnimal a2039 = SpeciesFor<TAnimal>.Instance.CreateInVivoFromDnaTrappedInAmber();
        TAnimal a2988 = SpeciesFor<TAnimal>.Instance.CreateInVivoFromDnaTrappedInAmber();
        TAnimal a0400 = SpeciesFor<TAnimal>.Instance.Clone(a2988);
        TAnimal a9477 = SpeciesFor<TAnimal>.Instance.Breed(a0400, a2039);
        TAnimal a9404 = SpeciesFor<TAnimal>.Instance.Breed(a2988, a9477);
        
        Console.WriteLine(
            "The confederation of mad scientists is happy to announce the birth " +
            $"of {a9404.CuteName}, our new {SpeciesFor<TAnimal>.Instance.ScientificName}.");
    }
}

A limitation of this pattern is that it is not possible (as far as I can tell) to extend the class hierarchy in a satifying manner. For example we cannot introduce an intermediary Mammal class associated to a MammalClass companion. Another is that it does not work for static members in interfaces which would be more flexible than abstract classes.

From the other answers, the problem is that you're templating a typedef. The only "way" to do this is to use a templated class; ie, basic template metaprogramming.

template<class T> class vector_Typedefs {
    /*typedef*/ struct array { //The typedef isn't necessary
        size_t x; 
        T *ary; 
    }; 

    //Any other templated typedefs you need. Think of the templated class like something
    // between a function and namespace.
}

//An advantage is:
template<> class vector_Typedefs<bool>
{
    struct array {
        //Special behavior for the binary array
    }
}

To improve Alexander's solution from the Python 2.6 (and in Python 3.x) you can use helper module curses.ascii and use curses.ascii.isascii() function or various other: https://docs.python.org/2.6/library/curses.ascii.html

from curses import ascii

def isascii(s):
    return all(ascii.isascii(c) for c in s)

When you change an ASP.NET website's configuration file, it restarts the application to reflect the changes...

When you do an IIS reset, that restarts all applications running on that IIS instance.

In Oracle (For last 24 hours):

SELECT  *
FROM    my_table
WHERE   date_column >= SYSDATE - 24/24

In case, for any reason, you have rows with future dates, you can use between, like this:

SELECT  *
FROM    my_table
WHERE   date_column BETWEEN (SYSDATE - 24/24) AND SYSDATE

Not quite sure what the 300 is supposed to mean? Miss typo? However for iframes it would be best to use CSS :) - Ive found befor when importing youtube videos that it ignores inline things.

<style>
    #myFrame { width:100%; height:100%; }
</style>

<iframe src="html_intro.asp" id="myFrame">
<p>Hi SOF</p>
</iframe>

The only viable solution in my opinion is to use

• an ID INT IDENTITY(1,1) column to get SQL Server to handle the automatic increment of your numeric value
• a computed, persisted column to convert that numeric value to the value you need

So try this:

CREATE TABLE dbo.tblUsers
  (ID INT IDENTITY(1,1) NOT NULL PRIMARY KEY CLUSTERED,
   UserID AS 'UID' + RIGHT('00000000' + CAST(ID AS VARCHAR(8)), 8) PERSISTED,
   .... your other columns here....
  )

Now, every time you insert a row into tblUsers without specifying values for ID or UserID:

INSERT INTO dbo.tblUsersCol1, Col2, ..., ColN)
VALUES (Val1, Val2, ....., ValN)

then SQL Server will automatically and safely increase your ID value, and UserID will contain values like UID00000001, UID00000002,...... and so on - automatically, safely, reliably, no duplicates.

Update: the column UserID is computed - but it still OF COURSE has a data type, as a quick peek into the Object Explorer reveals:

If the file is large, you may not want to load it entirely into memory at once. This approach avoids that. (Of course, making a dict out of it could still take up some RAM, but it's guaranteed to be smaller than the original file.)

my_dict = {}
for i, line in enumerate(file):
    if (i - 8) % 7:
        continue
    k, v = line.split("\t")[:3:2]
    my_dict[k] = v

Edit: Not sure where I got extend from before. I meant update

If you only need to share data between views/scopes/controllers, the easiest way is to store it in $rootScope. However, if you need a shared function, it is better to define a service to do that.

You can try below:

find ./ ! \( -path ./tmp -prune \) ! \( -path ./scripts -prune \) -type f -name '*_peaks.bed'

Change The "Virtual PC.exe" to a name without space like "VirtualPC.exe" in the folder. When you write start "path" with "" the CMD starts a new cmd window with the path as the title. Change the name to a name without space,write this on Notepad and after this save like Name.cmd or Name.bat:

CD\
CD Program Files
CD Microsoft Virtual PC
start VirtualPC.exe
timeout 2
exit

This command will redirect the CMD to the folder,start the VirualPC.exe,wait 2 seconds and exit.

The same way you declare any other variable, just use the bit type:

DECLARE @MyVar bit
Set @MyVar = 1  /* True */
Set @MyVar = 0  /* False */

SELECT * FROM [MyTable] WHERE MyBitColumn = @MyVar

I understand the ZooKeeper in general but had problems with the terms "quorum" and "split brain" so maybe I can share my findings with you (I consider myself also a layman).

Let's say we have a ZooKeeper cluster of 5 servers. One of the servers will become the leader and the others will become followers.

• These 5 servers form a quorum. Quorum simply means "these servers can vote upon who should be the leader".

• So the voting is based on majority. Majority simply means "more than half" so more than half of the number of servers must agree for a specific server to become the leader.

• So there is this bad thing that may happen called "split brain". A split brain is simply this, as far as I understand: The cluster of 5 servers splits into two parts, or let's call it "server teams", with maybe one part of 2 and the other of 3 servers. This is really a bad situation as if both "server teams" must execute a specific order how would you decide wich team should be preferred? They might have received different information from the clients. So it is really important to know what "server team" is still relevant and which one can/should be ignored.

• Majority is also the reason you should use an odd number of servers. If you have 4 servers and a split brain where 2 servers seperate then both "server teams" could say "hey, we want to decide who is the leader!" but how should you decide which 2 servers you should choose? With 5 servers it's simple: The server team with 3 servers has the majority and is allowed to select the new leader.

• Even if you just have 3 servers and one of them fails the other 2 still form the majority and can agree that one of them will become the new leader.

I realize once you think about it some time and understand the terms it's not so complicated anymore. I hope this also helps anyone in understanding these terms.

I am not sure what you are trying to accomplish, but you may want to consider that passing a class may not be what you really need to be doing. In many cases, dealing with Class like this is easily encapsulated within a factory pattern of some type and the use of that is done through an interface. here's one of dozens of articles on that pattern: http://today.java.net/pub/a/today/2005/03/09/factory.html

using a class within a factory can be accomplished in a variety of ways, most notably by having a config file that contains the name of the class that implements the required interface. Then the factory can find that class from within the class path and construct it as an object of the specified interface.

This is a quite confusing way of using Apache configuration directives.

Technically, the first bit is equivalent to

Allow From All

This is because Order Deny,Allow makes the Deny directive evaluated before the Allow Directives. In this case, Deny and Allow conflict with each other, but Allow, being the last evaluated will match any user, and access will be granted.

Now, just to make things clear, this kind of configuration is BAD and should be avoided at all cost, because it borders undefined behaviour.

The Limit sections define which HTTP methods have access to the directory containing the .htaccess file.

Here, GET and POST methods are allowed access, and PUT and DELETE methods are denied access. Here's a link explaining what the various HTTP methods are: http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html

However, it's more than often useless to use these limitations as long as you don't have custom CGI scripts or Apache modules that directly handle the non-standard methods (PUT and DELETE), since by default, Apache does not handle them at all.

It must also be noted that a few other methods exist that can also be handled by Limit, namely CONNECT, OPTIONS, PATCH, PROPFIND, PROPPATCH, MKCOL, COPY, MOVE, LOCK, and UNLOCK.

The last bit is also most certainly useless, since any correctly configured Apache installation contains the following piece of configuration (for Apache 2.2 and earlier):

#
# The following lines prevent .htaccess and .htpasswd files from being 
# viewed by Web clients. 
#
<Files ~ "^\.ht">
    Order allow,deny
    Deny from all
    Satisfy all
</Files>

which forbids access to any file beginning by ".ht".

The equivalent Apache 2.4 configuration should look like:

<Files ~ "^\.ht">
    Require all denied
</Files>

If you do "git status" while having a merge conflict, the first thing git shows you is how to abort the merge.

It's actually very similar to jQuery:

document.getElementsByClassName('class1 class2')

MDN Doc getElementsByClassName

Let's, just as example:

public class Test {     public Test() {         System.out.println("NO ARGS");     }      public Test(String s) {         this();         System.out.println("1 ARG");     }      public static void main(String args[])     {         Test t = new Test("s");     } } 

It will print

>>> NO ARGS >>> 1 ARG 

The correct way to call the constructor is by:

this(); 

Try this for a simple solution

cmd & exit

The two errors you have in your code are very different.

The first problem is that you're initializing and populating your Map in the body of the class without a statement. You can either have a static Map and a static {//TODO manipulate Map} statement in the body of the class, or initialize and populate the Map in a method or in the class' constructor.

The second problem is that you cannot treat a Map syntactically like an array, so the statement data["John"] = "Taxi Driver"; should be replaced by data.put("John", "Taxi Driver"). If you already have a "John" key in your HashMap, its value will be replaced with "Taxi Driver".

You can use strcpy but remember to end the array with '\0'

char array[20]; char string[100];

array[0]='1'; array[1]='7'; array[2]='8'; array[3]='.'; array[4]='9'; array[5]='\0';
strcpy(string, array);
printf("%s\n", string);

The more canonical reference is in <HIToolbox/Events.h>:

/System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/HIToolbox.framework/Versions/A/Headers/Events.h

In newer Versions of MacOS the "Events.h" moved to here:

/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/HIToolbox.framework/Versions/A/Headers/Events.h

Like this in simple way .

    $this->db->select('*');
    $this->db->from('certs');
    $this->db->where('certs.id NOT IN (SELECT id_cer FROM revokace)');

    return $this->db->get()->result();

The move instruction copies a value from one register to another. The li instruction loads a specific numeric value into that register.

For the specific case of zero, you can use either the constant zero or the zero register to get that:

move $s0, $zero
li   $s0, 0

There's no register that generates a value other than zero, though, so you'd have to use li if you wanted some other number, like:

li $s0, 12345678

Posting this answer for folks wanting to initialize list with POCOs and also coz this is the first thing that pops up in search but all answers only for list of type string.

You can do this two ways one is directly setting the property by setter assignment or much cleaner by creating a constructor that takes in params and sets the properties.

class MObject {        
        public int Code { get; set; }
        public string Org { get; set; }
    }

List<MObject> theList = new List<MObject> { new MObject{ PASCode = 111, Org="Oracle" }, new MObject{ PASCode = 444, Org="MS"} };

OR by parameterized constructor

class MObject {
        public MObject(int code, string org)
        {
            Code = code;
            Org = org;
        }

        public int Code { get; set; }
        public string Org { get; set; }
    }

List<MObject> theList = new List<MObject> {new MObject( 111, "Oracle" ), new MObject(222,"SAP")};


        

I want to update this question with an easier solution. Create a symbolic link to node_modules.

The easiest way to grant public access to node_modules is to create a symbolic link pointing to your node_modules from within your public directory. The symlink will make it as if the files exist wherever the link is created.

For example, if the node server has code for serving static files

app.use(serveStatic(path.join(__dirname, 'dist')));

and __dirname refers to /path/to/app so that your static files are served from /path/to/app/dist

and node_modules is at /path/to/app/node_modules, then create a symlink like this on mac/linux:

ln -s /path/to/app/node_modules /path/to/app/dist/node_modules

or like this on windows:

mklink /path/to/app/node_modules /path/to/app/dist/node_modules

Now a get request for:

node_modules/some/path 

will receive a response with the file at

/path/to/app/dist/node_modules/some/path 

which is really the file at

/path/to/app/node_modules/some/path

If your directory at /path/to/app/dist is not a safe location, perhaps because of interference from a build process with gulp or grunt, then you could add a separate directory for the link and add a new serveStatic call such as:

ln -s /path/to/app/node_modules /path/to/app/newDirectoryName/node_modules

and in node add:

app.use(serveStatic(path.join(__dirname, 'newDirectoryName')));

If this is your app, if you connect the device to your computer, you can use the "Devices" option on Xcode's "Window" menu and then download the app's data container to your computer. Just select your app from the list of installed apps, and click on the "gear" icon and choose "Download Container".

Once you've downloaded it, right click on the file in the Finder and choose "Show Package Contents".

.myDiv {
    background-color: red;
    width: 100%;
    min-height: 100vh;
    max-height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    margin: 0 auto;
}

Basically, we're fixing the div's position regardless of it's parent, and then position it using margin: 0 auto; and settings its position at the top left corner.

One difference - apart from the possibility to use wildcards with LIKE - is in trailing spaces: The = operator ignores trailing space, but LIKE does not.

If you have @oneToOne mapping set to FetchType.LAZY and you use second query (because you need Department objects to be loaded as part of Employee objects) what Hibernate will do is, it will issue queries to fetch Department objects for every individual Employee object it fetches from DB.

Later, in the code you might access Department objects via Employee to Department single-valued association and Hibernate will not issue any query to fetch Department object for the given Employee.

Remember, Hibernate still issues queries equal to the number of Employees it has fetched. Hibernate will issue same number of queries in both above queries, if you wish to access Department objects of all Employee objects

Unfortunately there is no hung state for a process. Now hung can be deadlock. This is block state. The threads in the process are blocked. The other things could be live lock where the process is running but doing the same thing again and again. This process is in running state. So as you can see there is no definite hung state. As suggested you can use the top command to see if the process is using 100% CPU or lot of memory.

Sort them and use comm:

comm -23 <(sort a.txt) <(sort b.txt)

comm compares (sorted) input files and by default outputs three columns: lines that are unique to a, lines that are unique to b, and lines that are present in both. By specifying -1, -2 and/or -3 you can suppress the corresponding output. Therefore comm -23 a b lists only the entries that are unique to a. I use the <(...) syntax to sort the files on the fly, if they are already sorted you don't need this.

I think you want to cast your dt to a date and fix the format of your date literal:

SELECT *
FROM table
WHERE dt::date = '2011-01-01' -- This should be ISO-8601 format, YYYY-MM-DD

Or the standard version:

SELECT *
FROM table
WHERE CAST(dt AS DATE) = '2011-01-01' -- This should be ISO-8601 format, YYYY-MM-DD

The extract function doesn't understand "date" and it returns a number.

I suggest writing a little script and doing multiple searches with Grep. I've never found a way to search for multiple patterns, and believe me, I've looked!

Like so, your shell file, with an embedded string:

 #!/bin/bash 
 grep *A6* "Alex A1 Alex A6 Alex A7 Bob A1 Chris A9 Chris A6";
 grep *A7* "Alex A1 Alex A6 Alex A7 Bob A1 Chris A9 Chris A6";
 grep *A8* "Alex A1 Alex A6 Alex A7 Bob A1 Chris A9 Chris A6";

Then run by typing myshell.sh.

If you want to be able to pass in the string on the command line, do it like this, with a shell argument--this is bash notation btw:

 #!/bin/bash 
 $stingtomatch = "${1}";
 grep *A6* "${stingtomatch}";
 grep *A7* "${stingtomatch}";
 grep *A8* "${stingtomatch}";

And so forth.

If there are a lot of patterns to match, you can put it in a for loop.

it depends where is your Data folder

To get the directory where the .exe file is:

AppDomain.CurrentDomain.BaseDirectory

To get the current directory:

Environment.CurrentDirectory

Then you can concatenate your directory path (@"\Data\Names.txt")

OpenJDK is a reference model and open source, while Oracle JDK is an implementation of the OpenJDK and is not open source. Oracle JDK is more stable than OpenJDK.

OpenJDK is released under GPL v2 license whereas Oracle JDK is licensed under Oracle Binary Code License Agreement.

OpenJDK and Oracle JDK have almost the same code, but Oracle JDK has more classes and some bugs fixed.

So if you want to develop enterprise/commercial software I would suggest to go for Oracle JDK, as it is thoroughly tested and stable.

I have faced lot of problems with application crashes using OpenJDK, which are fixed just by switching to Oracle JDK