Short function that does the job:

function deleteDir($path) {
    return is_file($path) ?
            @unlink($path) :
            array_map(__FUNCTION__, glob($path.'/*')) == @rmdir($path);
}

I use it in a Utils class like this:

class Utils {
    public static function deleteDir($path) {
        $class_func = array(__CLASS__, __FUNCTION__);
        return is_file($path) ?
                @unlink($path) :
                array_map($class_func, glob($path.'/*')) == @rmdir($path);
    }
}

With great power comes great responsibility: When you call this function with an empty value, it will delete files starting in root (/). As a safeguard you can check if path is empty:

function deleteDir($path) {
    if (empty($path)) { 
        return false;
    }
    return is_file($path) ?
            @unlink($path) :
            array_map(__FUNCTION__, glob($path.'/*')) == @rmdir($path);
}

So I was looking all over for a way to remove all files in a directory except for some directories, and files, I wanted to keep around. After much searching I devised a way to do it using find.

find -E . -regex './(dir1|dir2|dir3)' -and -type d -prune -o -print -exec rm -rf {} \;

Essentially it uses regex to select the directories to exclude from the results then removes the remaining files. Just wanted to put it out here in case someone else needed it.

To set a class completely, instead of adding one or removing one, use this:

$(this).attr("class","newclass");

Advantage of this is that you'll remove any class that might be set in there and reset it to how you like. At least this worked for me in one situation.

Java <= 6.x just allows you to catch one exception for each catch block:

try {

} catch (ExceptionType name) {

} catch (ExceptionType name) {

}

Documentation:

Each catch block is an exception handler and handles the type of exception indicated by its argument. The argument type, ExceptionType, declares the type of exception that the handler can handle and must be the name of a class that inherits from the Throwable class.

For Java 7 you can have multiple Exception caught on one catch block:

catch (IOException|SQLException ex) {
    logger.log(ex);
    throw ex;
}

Documentation:

In Java SE 7 and later, a single catch block can handle more than one type of exception. This feature can reduce code duplication and lessen the temptation to catch an overly broad exception.

Reference: http://docs.oracle.com/javase/tutorial/essential/exceptions/catch.html

Not sure if this is valid but it worked for me.

The code :

<div style='position:relative;background-color:#000000;width:600px;height:30px;border:solid;'>_x000D_
  <p style='display:inline;color:#ffffff;float:left;'> Whatever </p>     _x000D_
  <a style='position:absolute;top:0px;left:0px;width:100%;height:100%;display:inline;' href ='#'></a>_x000D_
</div>

The method mentioned by steenslag is terse, and given the scope of the question it should be considered the correct answer. However it is also worth knowing that this can be achieved with a regular expression, which if you aren't already familiar with in Ruby, is an important skill to learn.

Have a play with Rubular: http://rubular.com/

But in this case, the following ruby statement will return true if the string on the left starts with 'abc'. The \A in the regex literal on the right means 'the beginning of the string'. Have a play with rubular - it will become clear how things work.

'abcdefg' =~  /\Aabc/ 

I will give you steps to writing and compiling code. Use this example:

 public class Paycheck {
    public static void main(String args[]) {
        double amountInAccount;
        amountInAccount = 128.57;
        System.out.print("You earned $");
        System.out.print(amountInAccount);
        System.out.println(" at work today.");
    }
}

1. Save the code as Paycheck.java
2. Go to terminal and type cd Desktop
3. Type javac Paycheck.java
4. Type java Paycheck
5. Enjoy your program!

if you want to delete rows based on some specific cell value. let suppose we have a file containing 10000 rows, and a fields having value of NULL. and based on that null value want to delete all those rows and records.

here are some simple tip. First open up Find Replace dialog, and on Replace tab, make all those cell containing NULL values with Blank. then press F5 and select the Blank option, now right click on the active sheet, and select delete, then option for Entire row.

it will delete all those rows based on cell value of containing word NULL.

A Media Query inside of an iframe can function as an element query. I've successfully implement this. The idea came from a recent post about Responsive Ads by Zurb. No Javascript!

A big part of the REST philosophy is to exploit as many standard features of the HTTP protocol as possible when designing your API. Applying that philosophy to authentication, client and server would utilize standard HTTP authentication features in the API.

Login screens are great for human user use cases: visit a login screen, provide user/password, set a cookie, client provides that cookie in all future requests. Humans using web browsers can't be expected to provide a user id and password with each individual HTTP request.

But for a REST API, a login screen and session cookies are not strictly necessary, since each request can include credentials without impacting a human user; and if the client does not cooperate at any time, a 401 "unauthorized" response can be given. RFC 2617 describes authentication support in HTTP.

TLS (HTTPS) would also be an option, and would allow authentication of the client to the server (and vice versa) in every request by verifying the public key of the other party. Additionally this secures the channel for a bonus. Of course, a keypair exchange prior to communication is necessary to do this. (Note, this is specifically about identifying/authenticating the user with TLS. Securing the channel by using TLS / Diffie-Hellman is always a good idea, even if you don't identify the user by its public key.)

An example: suppose that an OAuth token is your complete login credentials. Once the client has the OAuth token, it could be provided as the user id in standard HTTP authentication with each request. The server could verify the token on first use and cache the result of the check with a time-to-live that gets renewed with each request. Any request requiring authentication returns 401 if not provided.

Matplot colors your plot with different colors , but incase you wanna put specific colors

    import matplotlib.pyplot as plt
    import numpy as np
            
    x = np.arange(10)
            
    plt.plot(x, x)
    plt.plot(x, 2 * x,color='blue')
    plt.plot(x, 3 * x,color='red')
    plt.plot(x, 4 * x,color='green')
    plt.show()

You need a regular expression like the following to do it properly:

/^[+-]?((\d+(\.\d*)?)|(\.\d+))$/

The same expression with whitespace, using the extended modifier (as supported by Perl):

/^  [+-]? ( (\d+ (\.\d*)?)  |  (\.\d+) ) $/x

or with comments:

/^           # Beginning of string
 [+-]?       # Optional plus or minus character
 (           # Followed by either:
   (           #   Start of first option
     \d+       #   One or more digits
     (\.\d*)?  #   Optionally followed by: one decimal point and zero or more digits
   )           #   End of first option
   |           # or
   (\.\d+)     #   One decimal point followed by one or more digits
 )           # End of grouping of the OR options
 $           # End of string (i.e. no extra characters remaining)
 /x          # Extended modifier (allows whitespace & comments in regular expression)

For example, it will match:

• 123
• 23.45
• 34.
• .45
• -123
• -273.15
• -42.
• -.45
• +516
• +9.8
• +2.
• +.5

And will reject these non-numbers:

• . (single decimal point)
• -. (negative decimal point)
• +. (plus decimal point)
• (empty string)

The simpler solutions can incorrectly reject valid numbers or match these non-numbers.

You can also use:

    sed -n 's/.*\/\([^\/]\{1,\}\)$/\1/p'

or

    sed -n 's/.*\/\([^\/]*\)$/\1/p'

If you use any kind of special maps with keys or values also of special maps, you will find it's not contemplated by the implementation of google.

I'm going to have to disagree with the majority here.

I think the relative URL scheme is "fine" when you want to quickly get something up and running and not think outside the box, particularly if your project is small with few developers (or just yourself).

However, once you start working on big, fatty systems where you switch domains and protocols all the time, I believe that a more elegant approach is in order.

When you compare absolute and relative URLs in essence, Absolute wins. Why? Because it won't ever break. Ever. An absolute URL is exactly what it says it is. The catch is when you have to MAINTAIN your absolute URLs.

The weak approach to absolute URL linking is actually hard coding the entire URL. Not a great idea, and probably the culprit of why people see them as dangerous/evil/annoying to maintain. A better approach is to write yourself an easy to use URL generator. These are easy to write, and can be incredibly powerful- automatically detecting your protocol, easy to config (literally set the url once for the whole app), etc, and it injects your domain all by itself. The nice thing about that: You go on coding using relative URLs, and at run time the application inserts your URLs as full absolutes on the fly. Awesome.

Seeing as how practically all modern sites use some sort of dynamic back-end, it's in the best interest of said site to do it that way. Absolute URLs do more than just make you certain of where they point to- they also can improve SEO performance.

I might add that the argument that absolute URLs is somehow going to change the load time of the page is a myth. If your domain weighs more than a few bytes and you're on a dialup modem in the 1980s, sure. But that's just not the case anymore. https://stackoverflow.com/ is 25 bytes, whereas the "topbar-sprite.png" file that they use for the nav area of the site weighs in at 9+ kb. That means that the additional URL data is .2% of the loaded data in comparison to the sprite file, and that file is not even considered a big performance hit.

That big, unoptimized, full-page background image is much more likely to slow your load times.

An interesting post about why relative URLs shouldn't be used is here: Why relative URLs should be forbidden for web developers

An issue that can arise with relatives, for instance, is that sometimes server mappings (mind you on big, messed up projects) don't line up with file names and the developer may make an assumption about a relative URL that just isn't true. I just saw that today on a project that I'm on and it brought an entire page down.

Or perhaps a developer forgot to switch a pointer and all of a sudden google indexed your entire test environment. Whoops- duplicate content (bad for SEO!).

Absolutes can be dangerous, but when used properly and in a way that can't break your build they are proven to be more reliable. Look at the article above which gives a bunch of reasons why the Wordpress url generator is super awesome.

:)

I gave all users full access on the xampp folder, inclusive subdirectories. Afterwards it worked.

Just use .contains. For example, if you were checking if an ArrayList arr contains a value val, you would simply run arr.contains(val), which would return a boolean representing if the value is contained. For more information, see the docs for .contains.

vector<int> adj[n]; // where n is number of rows in 2d vector.

I wanted to put the .gif file in a GUI but displayed with other elements. And the .gif file would be taken from the java project and not from an URL.

1 - Top of the interface would be a list of elements where we can choose one

2 - Center would be the animated GIF

3 - Bottom would display the element chosen from the list

Here is my code (I need 2 java files, the first (Interf.java) calls the second (Display.java)):

1 - Interf.java

public class Interface_for {

    public static void main(String[] args) {

        Display Fr = new Display();

    }
}

2 - Display.java

INFOS: Be shure to create a new source folder (NEW > source folder) in your java project and put the .gif inside for it to be seen as a file.

I get the gif file with the code below, so I can it export it in a jar project(it's then animated).

URL url = getClass().getClassLoader().getResource("fire.gif");

  public class Display extends JFrame {
  private JPanel container = new JPanel();
  private JComboBox combo = new JComboBox();
  private JLabel label = new JLabel("A list");
  private JLabel label_2 = new JLabel ("Selection");

  public Display(){
    this.setTitle("Animation");
    this.setSize(400, 350);
    this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    this.setLocationRelativeTo(null);
    container.setLayout(new BorderLayout());
    combo.setPreferredSize(new Dimension(190, 20));
    //We create te list of elements for the top of the GUI
    String[] tab = {"Option 1","Option 2","Option 3","Option 4","Option 5"};
    combo = new JComboBox(tab);

    //Listener for the selected option
    combo.addActionListener(new ItemAction());

    //We add elements from the top of the interface
    JPanel top = new JPanel();
    top.add(label);
    top.add(combo);
    container.add(top, BorderLayout.NORTH);

    //We add elements from the center of the interface
    URL url = getClass().getClassLoader().getResource("fire.gif");
    Icon icon = new ImageIcon(url);
    JLabel center = new JLabel(icon);
    container.add(center, BorderLayout.CENTER);

    //We add elements from the bottom of the interface
    JPanel down = new JPanel();
    down.add(label_2);
    container.add(down,BorderLayout.SOUTH);

    this.setContentPane(container);
    this.setVisible(true);
    this.setResizable(false);
  }
  class ItemAction implements ActionListener{
      public void actionPerformed(ActionEvent e){
          label_2.setText("Chosen option: "+combo.getSelectedItem().toString());
      }
  }
}

.modal.fade, .modal.fade .modal-dialog {
    -webkit-transition: none;
    -moz-transition: none;
    -ms-transition: none;
    -o-transition: none;
    transition: none;
}

The most important use case is probably exception checking.

While junit4 includes the expected element for checking if an exception occurred, it seems like it isn't part of the newer junit5. Another advantage of using fail() over the expected is that you can combine it with finally allowing test-case cleanup.

dao.insert(obj);
try {
  dao.insert(obj);
  fail("No DuplicateKeyException thrown.");
} catch (DuplicateKeyException e) {
  assertEquals("Error code doesn't match", 123, e.getErrorCode());
} finally {
  //cleanup
  dao.delete(obj);
}

As noted in another comment. Having a test to fail until you can finish implementing it sounds reasonable as well.

You cannot scroll images continuously using the HTML marquee tag - it must have JavaScript added for the continuous scrolling functionality.

There is a JavaScript plugin called crawler.js available on the dynamic drive forum for achieving this functionality. This plugin was created by John Davenport Scheuer and has been modified over time to suit new browsers.

I have also implemented this plugin into my blog to document all the steps to use this plugin. Here is the sample code:

<head>
    <script src="http://code.jquery.com/jquery-latest.min.js" type="text/javascript"></script>
    <script src="assets/js/crawler.js" type="text/javascript" ></script>
</head>

<div id="mycrawler2" style="margin-top: -3px; " class="productswesupport">
    <img src="assets/images/products/ie.png" />
    <img src="assets/images/products/browser.png" />
    <img src="assets/images/products/chrome.png" />
    <img src="assets/images/products/safari.png" />
</div>

Here is the plugin configration:

marqueeInit({
    uniqueid: 'mycrawler2',
    style: {
    },
    inc: 5, //speed - pixel increment for each iteration of this marquee's movement
    mouse: 'cursor driven', //mouseover behavior ('pause' 'cursor driven' or false)
    moveatleast: 2,
    neutral: 150,
    savedirection: true,
    random: true
});

A alternative solution to work with lists based on Scharron's solution

def myprint(d):
    my_list = d.iteritems() if isinstance(d, dict) else enumerate(d)

    for k, v in my_list:
        if isinstance(v, dict) or isinstance(v, list):
            myprint(v)
        else:
            print u"{0} : {1}".format(k, v)

Maybe you can use matplotlib for this, you can also plot normal images with it. If you call show() the image pops up in a window. Take a look at this:

http://matplotlib.org/users/image_tutorial.html

There is the "Compare" plugin. You can install it via Plugins > Plugin Manager.

Alternatively you can install a specialized file compare software like WinMerge.

The short answer, or TL;DR

Basically, eval is used to evaluate a single dynamically generated Python expression, and exec is used to execute dynamically generated Python code only for its side effects.

eval and exec have these two differences:

1. eval accepts only a single expression, exec can take a code block that has Python statements: loops, try: except:, class and function/method definitions and so on.

   An expression in Python is whatever you can have as the value in a variable assignment:

   a_variable = (anything you can put within these parentheses is an expression)
   

2. eval returns the value of the given expression, whereas exec ignores the return value from its code, and always returns None (in Python 2 it is a statement and cannot be used as an expression, so it really does not return anything).

In versions 1.0 - 2.7, exec was a statement, because CPython needed to produce a different kind of code object for functions that used exec for its side effects inside the function.

In Python 3, exec is a function; its use has no effect on the compiled bytecode of the function where it is used.

Thus basically:

>>> a = 5
>>> eval('37 + a')   # it is an expression
42
>>> exec('37 + a')   # it is an expression statement; value is ignored (None is returned)
>>> exec('a = 47')   # modify a global variable as a side effect
>>> a
47
>>> eval('a = 47')  # you cannot evaluate a statement
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "<string>", line 1
    a = 47
      ^
SyntaxError: invalid syntax

The compile in 'exec' mode compiles any number of statements into a bytecode that implicitly always returns None, whereas in 'eval' mode it compiles a single expression into bytecode that returns the value of that expression.

>>> eval(compile('42', '<string>', 'exec'))  # code returns None
>>> eval(compile('42', '<string>', 'eval'))  # code returns 42
42
>>> exec(compile('42', '<string>', 'eval'))  # code returns 42,
>>>                                          # but ignored by exec

In the 'eval' mode (and thus with the eval function if a string is passed in), the compile raises an exception if the source code contains statements or anything else beyond a single expression:

>>> compile('for i in range(3): print(i)', '<string>', 'eval')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "<string>", line 1
    for i in range(3): print(i)
      ^
SyntaxError: invalid syntax

Actually the statement "eval accepts only a single expression" applies only when a string (which contains Python source code) is passed to eval. Then it is internally compiled to bytecode using compile(source, '<string>', 'eval') This is where the difference really comes from.

If a code object (which contains Python bytecode) is passed to exec or eval, they behave identically, excepting for the fact that exec ignores the return value, still returning None always. So it is possible use eval to execute something that has statements, if you just compiled it into bytecode before instead of passing it as a string:

>>> eval(compile('if 1: print("Hello")', '<string>', 'exec'))
Hello
>>>

works without problems, even though the compiled code contains statements. It still returns None, because that is the return value of the code object returned from compile.

In the 'eval' mode (and thus with the eval function if a string is passed in), the compile raises an exception if the source code contains statements or anything else beyond a single expression:

>>> compile('for i in range(3): print(i)', '<string>'. 'eval')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "<string>", line 1
    for i in range(3): print(i)
      ^
SyntaxError: invalid syntax

The longer answer, a.k.a the gory details

exec and eval

The exec function (which was a statement in Python 2) is used for executing a dynamically created statement or program:

>>> program = '''
for i in range(3):
    print("Python is cool")
'''
>>> exec(program)
Python is cool
Python is cool
Python is cool
>>> 

The eval function does the same for a single expression, and returns the value of the expression:

>>> a = 2
>>> my_calculation = '42 * a'
>>> result = eval(my_calculation)
>>> result
84

exec and eval both accept the program/expression to be run either as a str, unicode or bytes object containing source code, or as a code object which contains Python bytecode.

If a str/unicode/bytes containing source code was passed to exec, it behaves equivalently to:

exec(compile(source, '<string>', 'exec'))

and eval similarly behaves equivalent to:

eval(compile(source, '<string>', 'eval'))

Since all expressions can be used as statements in Python (these are called the Expr nodes in the Python abstract grammar; the opposite is not true), you can always use exec if you do not need the return value. That is to say, you can use either eval('my_func(42)') or exec('my_func(42)'), the difference being that eval returns the value returned by my_func, and exec discards it:

>>> def my_func(arg):
...     print("Called with %d" % arg)
...     return arg * 2
... 
>>> exec('my_func(42)')
Called with 42
>>> eval('my_func(42)')
Called with 42
84
>>> 

Of the 2, only exec accepts source code that contains statements, like def, for, while, import, or class, the assignment statement (a.k.a a = 42), or entire programs:

>>> exec('for i in range(3): print(i)')
0
1
2
>>> eval('for i in range(3): print(i)')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "<string>", line 1
    for i in range(3): print(i)
      ^
SyntaxError: invalid syntax

Both exec and eval accept 2 additional positional arguments - globals and locals - which are the global and local variable scopes that the code sees. These default to the globals() and locals() within the scope that called exec or eval, but any dictionary can be used for globals and any mapping for locals (including dict of course). These can be used not only to restrict/modify the variables that the code sees, but are often also used for capturing the variables that the executed code creates:

>>> g = dict()
>>> l = dict()
>>> exec('global a; a, b = 123, 42', g, l)
>>> g['a']
123
>>> l
{'b': 42}

(If you display the value of the entire g, it would be much longer, because exec and eval add the built-ins module as __builtins__ to the globals automatically if it is missing).

In Python 2, the official syntax for the exec statement is actually exec code in globals, locals, as in

>>> exec 'global a; a, b = 123, 42' in g, l

However the alternate syntax exec(code, globals, locals) has always been accepted too (see below).

compile

The compile(source, filename, mode, flags=0, dont_inherit=False, optimize=-1) built-in can be used to speed up repeated invocations of the same code with exec or eval by compiling the source into a code object beforehand. The mode parameter controls the kind of code fragment the compile function accepts and the kind of bytecode it produces. The choices are 'eval', 'exec' and 'single':

• 'eval' mode expects a single expression, and will produce bytecode that when run will return the value of that expression:

  >>> dis.dis(compile('a + b', '<string>', 'eval'))
    1           0 LOAD_NAME                0 (a)
                3 LOAD_NAME                1 (b)
                6 BINARY_ADD
                7 RETURN_VALUE
  

• 'exec' accepts any kinds of python constructs from single expressions to whole modules of code, and executes them as if they were module top-level statements. The code object returns None:

  >>> dis.dis(compile('a + b', '<string>', 'exec'))
    1           0 LOAD_NAME                0 (a)
                3 LOAD_NAME                1 (b)
                6 BINARY_ADD
                7 POP_TOP                             <- discard result
                8 LOAD_CONST               0 (None)   <- load None on stack
               11 RETURN_VALUE                        <- return top of stack
  

• 'single' is a limited form of 'exec' which accepts a source code containing a single statement (or multiple statements separated by ;) if the last statement is an expression statement, the resulting bytecode also prints the repr of the value of that expression to the standard output(!).

  An if-elif-else chain, a loop with else, and try with its except, else and finally blocks is considered a single statement.

  A source fragment containing 2 top-level statements is an error for the 'single', except in Python 2 there is a bug that sometimes allows multiple toplevel statements in the code; only the first is compiled; the rest are ignored:

  In Python 2.7.8:

  >>> exec(compile('a = 5\na = 6', '<string>', 'single'))
  >>> a
  5
  

  And in Python 3.4.2:

  >>> exec(compile('a = 5\na = 6', '<string>', 'single'))
  Traceback (most recent call last):
    File "<stdin>", line 1, in <module>
    File "<string>", line 1
      a = 5
          ^
  SyntaxError: multiple statements found while compiling a single statement
  

  This is very useful for making interactive Python shells. However, the value of the expression is not returned, even if you eval the resulting code.

Thus greatest distinction of exec and eval actually comes from the compile function and its modes.

In addition to compiling source code to bytecode, compile supports compiling abstract syntax trees (parse trees of Python code) into code objects; and source code into abstract syntax trees (the ast.parse is written in Python and just calls compile(source, filename, mode, PyCF_ONLY_AST)); these are used for example for modifying source code on the fly, and also for dynamic code creation, as it is often easier to handle the code as a tree of nodes instead of lines of text in complex cases.

While eval only allows you to evaluate a string that contains a single expression, you can eval a whole statement, or even a whole module that has been compiled into bytecode; that is, with Python 2, print is a statement, and cannot be evalled directly:

>>> eval('for i in range(3): print("Python is cool")')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "<string>", line 1
    for i in range(3): print("Python is cool")
      ^
SyntaxError: invalid syntax

compile it with 'exec' mode into a code object and you can eval it; the eval function will return None.

>>> code = compile('for i in range(3): print("Python is cool")',
                   'foo.py', 'exec')
>>> eval(code)
Python is cool
Python is cool
Python is cool

If one looks into eval and exec source code in CPython 3, this is very evident; they both call PyEval_EvalCode with same arguments, the only difference being that exec explicitly returns None.

Syntax differences of exec between Python 2 and Python 3

One of the major differences in Python 2 is that exec is a statement and eval is a built-in function (both are built-in functions in Python 3). It is a well-known fact that the official syntax of exec in Python 2 is exec code [in globals[, locals]].

Unlike majority of the Python 2-to-3 porting guides seem to suggest, the exec statement in CPython 2 can be also used with syntax that looks exactly like the exec function invocation in Python 3. The reason is that Python 0.9.9 had the exec(code, globals, locals) built-in function! And that built-in function was replaced with exec statement somewhere before Python 1.0 release.

Since it was desirable to not break backwards compatibility with Python 0.9.9, Guido van Rossum added a compatibility hack in 1993: if the code was a tuple of length 2 or 3, and globals and locals were not passed into the exec statement otherwise, the code would be interpreted as if the 2nd and 3rd element of the tuple were the globals and locals respectively. The compatibility hack was not mentioned even in Python 1.4 documentation (the earliest available version online); and thus was not known to many writers of the porting guides and tools, until it was documented again in November 2012:

The first expression may also be a tuple of length 2 or 3. In this case, the optional parts must be omitted. The form exec(expr, globals) is equivalent to exec expr in globals, while the form exec(expr, globals, locals) is equivalent to exec expr in globals, locals. The tuple form of exec provides compatibility with Python 3, where exec is a function rather than a statement.

Yes, in CPython 2.7 that it is handily referred to as being a forward-compatibility option (why confuse people over that there is a backward compatibility option at all), when it actually had been there for backward-compatibility for two decades.

Thus while exec is a statement in Python 1 and Python 2, and a built-in function in Python 3 and Python 0.9.9,

>>> exec("print(a)", globals(), {'a': 42})
42

has had identical behaviour in possibly every widely released Python version ever; and works in Jython 2.5.2, PyPy 2.3.1 (Python 2.7.6) and IronPython 2.6.1 too (kudos to them following the undocumented behaviour of CPython closely).

What you cannot do in Pythons 1.0 - 2.7 with its compatibility hack, is to store the return value of exec into a variable:

Python 2.7.11+ (default, Apr 17 2016, 14:00:29) 
[GCC 5.3.1 20160413] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> a = exec('print(42)')
  File "<stdin>", line 1
    a = exec('print(42)')
           ^
SyntaxError: invalid syntax

(which wouldn't be useful in Python 3 either, as exec always returns None), or pass a reference to exec:

>>> call_later(exec, 'print(42)', delay=1000)
  File "<stdin>", line 1
    call_later(exec, 'print(42)', delay=1000)
                  ^
SyntaxError: invalid syntax

Which a pattern that someone might actually have used, though unlikely;

Or use it in a list comprehension:

>>> [exec(i) for i in ['print(42)', 'print(foo)']
  File "<stdin>", line 1
    [exec(i) for i in ['print(42)', 'print(foo)']
        ^
SyntaxError: invalid syntax

which is abuse of list comprehensions (use a for loop instead!).

This is because the className value which you are passing as argument for
forName(String className) method is not found or doesn't exists, or you a re passing the wrong value as the class name. Here is also a link which could help you.

1. https://docs.oracle.com/javase/7/docs/api/java/lang/ClassNotFoundException.html
2. https://docs.oracle.com/javase/7/docs/api/java/lang/Class.html#forName(java.lang.String)

Update

Module not specified

According to the snapshot you have provided this problem is because you have not determined the app module of your project, so I suggest you to choose the app module from configuration. For example:

My personal opinion is that you should avoid using JSP/ASP/PHP/etc pages. Instead output to an API similar to SAX (only designed for calling rather than handling). That way there is a single layer that has to create well formed output.

Anchors will need to be a different display type than their default to take a height. display:inline-block; or display:block;.

Also check on line-height which might be interesting with this.

After converting millis to seconds (by dividing by 1000), you can use / 60 to get the minutes value, and % 60 (remainder) to get the "seconds in minute" value.

long millis = .....;  // obtained from StopWatch
long minutes = (millis / 1000)  / 60;
int seconds = (int)((millis / 1000) % 60);

What about this:

var txt="";
var nyc = {
    fullName: "New York City",
    mayor: "Michael Bloomberg",
    population: 8000000,
    boroughs: 5
};

for (var x in nyc){
    txt += nyc[x];
}

If the OpenSSL headers are in the openssl sub-directory of the current directory, use:

gcc -I. -o Opentest Opentest.c -lcrypto

The pre-processor looks to create a name such as "./openssl/ssl.h" from the "." in the -I option and the name specified in angle brackets. If you had specified the names in double quotes (#include "openssl/ssl.h"), you might never have needed to ask the question; the compiler on Unix usually searches for headers enclosed in double quotes in the current directory automatically, but it does not do so for headers enclosed in angle brackets (#include <openssl/ssl.h>). It is implementation defined behaviour.

You don't say where the OpenSSL libraries are - you might need to add an appropriate option and argument to specify that, such as '-L /opt/openssl/lib'.

Try /[^;]*/

That's a negating character class.

If none of the above is working, you are probably working on EDI trasaction where you need to validate your result against an HIPPA schema or any other complex xsd for that matter. The requirement is that, say there 8 REF segments and any of them have to appear in any order and also not all are required, means to say you may have them in following order 1st REF, 3rd REF , 2nd REF, 9th REF. Under default situation EDI receive will fail, beacause default complex type is

<xs:sequence>
  <xs:element.../>
</xs:sequence>

The situation is even complex when you are calling your element by refrence and then that element in its original spot is quite complex itself. for example:

<xs:element>
<xs:complexType>
<xs:sequence>
<element name="REF1"  ref= "REF1_Mycustomelment" minOccurs="0" maxOccurs="1">
<element name="REF2"  ref= "REF2_Mycustomelment" minOccurs="0" maxOccurs="1">
<element name="REF3"  ref= "REF3_Mycustomelment" minOccurs="0" maxOccurs="1">
</xs:sequence>
</xs:complexType>
</xs:element>

Solution:

Here simply replacing "sequence" with "all" or using "choice" with min/max combinations won't work!

First thing replace "xs:sequence" with "<xs:all>" Now,You need to make some changes where you are Referring the element from, There go to:

<xs:annotation>
  <xs:appinfo>
    <b:recordinfo structure="delimited" field.........Biztalk/2003">

***Now in the above segment add trigger point in the end like this trigger_field="REF01_...complete name.." trigger_value = "38" Do the same for other REF segments where trigger value will be different like say "18", "XX" , "YY" etc..so that your record info now looks like:b:recordinfo structure="delimited" field.........Biztalk/2003" trigger_field="REF01_...complete name.." trigger_value="38">

This will make each element unique, reason being All REF segements (above example) have same structure like REF01, REF02, REF03. And during validation the structure validation is ok but it doesn't let the values repeat because it tries to look for remaining values in first REF itself. Adding triggers will make them all unique and they will pass in any order and situational cases (like use 5 out 9 and not all 9/9).

Hope it helps you, for I spent almost 20 hrs on this.

Good Luck

Another simple solution.

$ for entry in $(ls); do du -s "$entry"; done | sort -n

the result will look like

2900    tmp
6781    boot
8428    bin
24932   lib64
34436   sbin
90084   var
106676  etc
125216  lib
3313136 usr
4828700 opt

changing "du -s" to "du -sh" will show human readable size, but we won't be able to sort in this method.

Disable antivirus and try. I was also facing that problem... but in my case antivirus was blocking my application when I disabled antivirus it resolved.

@@RowCount will give you the number of records affected by a SQL Statement.

The @@RowCount works only if you issue it immediately afterwards. So if you are trapping errors, you have to do it on the same line. If you split it up, you will miss out on whichever one you put second.

SELECT @NumRowsChanged = @@ROWCOUNT, @ErrorCode = @@ERROR

If you have multiple statements, you will have to capture the number of rows affected for each one and add them up.

SELECT @NumRowsChanged = @NumRowsChanged  + @@ROWCOUNT, @ErrorCode = @@ERROR

1. Ensure that you have your Dbms Output window open through the view option in the menubar.
2. Click on the green '+' sign and add your database name.
3. Write 'DBMS_OUTPUT.ENABLE;' within your procedure as the first line. Hope this solves your problem.

Without animation, you can use plain JS:

scroll(0,0)

With animation, check Nick's answer.

I tried changing the repository list with:

http://security.ubuntu.com/ubuntu bionic-security main universe http://archive.ubuntu.com/ubuntu bionic main restricted universe

But none of them seem to work, but I finally found a repository that works running the following command

add-apt-repository ppa:ondrej/php

And then updating and installing normally the package using apt-get

As you can see it's installed at last.

On a POSIX system, you probably should use getline if it's available.

You also can use Chuck Falconer's public domain ggets function which provides syntax closer to gets but without the problems. (Chuck Falconer's website is no longer available, although archive.org has a copy, and I've made my own page for ggets.)

Like this:

var root = document.getElementsByTagName( 'html' )[0]; // '0' to assign the first (and only `HTML` tag)

root.setAttribute( 'class', 'myCssClass' );

Or use this as your 'setter' line to preserve any previously applied classes: (thanks @ama2)

root.className += ' myCssClass';

Or, depending on the required browser support, you can use the classList.add() method:

root.classList.add('myCssClass');

https://developer.mozilla.org/en-US/docs/Web/API/Element/classList http://caniuse.com/#feat=classlist

UPDATE:

A more elegant solution for referencing the HTML element might be this:

var root = document.documentElement;
root.className += ' myCssClass';
// ... or:
//  root.classList.add('myCssClass');
//

let newObj = JSON.parse(JSON.stringify(obj))

The JSON.stringify() method converts a JavaScript object or value to a JSON string

First, what you are looking for is a column or bar diagram, not really a histogram. A histogram is made from a frequency distribution of a continuous variable that is separated into bins. Here you have a column against separate labels.

To make a bar diagram with matplotlib, use the matplotlib.pyplot.bar() method. Have a look at this page of the matplotlib documentation that explains very well with examples and source code how to do it.

If it is possible though, I would just suggest that for a simple task like this if you could avoid writing code that would be better. If you have any spreadsheet program this should be a piece of cake because that's exactly what they are for, and you won't have to 'reinvent the wheel'. The following is the plot of your data in Excel:

I just copied your data from the question, used the text import wizard to put it in two columns, then I inserted a column diagram.

This is not possible.
However, you can create a service that runs under an administrative user.

The service can run automatically at startup and communicate with your existing application.
When the application needs to do something as an administrator, it can ask the service to do it for it.

Remember that multiple users can be logged on at once.

Interesting. The consensus from most of these answers seems to be that the redundant break statement is unnecessary clutter. On the other hand, I read the break statement in a switch as the 'closing' of a case. case blocks that don't end in a break tend to jump out at me as potential fall though bugs.

I know that that's not how it is when there's a return instead of a break, but that's how my eyes 'read' the case blocks in a switch, so I personally would prefer that each case be paired with a break. But many compilers do complain about the break after a return being superfluous/unreachable, and apparently I seem to be in the minority anyway.

So get rid of the break following a return.

NB: all of this is ignoring whether violating the single entry/exit rule is a good idea or not. As far as that goes, I have an opinion that unfortunately changes depending on the circumstances...

Here's a variation of Oscar's first version that doesn't use a for-each loop.

for (int i = 0; i < charArray.length; i++) {
    if (charArray[i] == 'q') {
        // do something
        break;
    }
}

You could have a boolean variable that gets set to false before the loop, then make "do something" set the variable to true, which you could test for after the loop. The loop could also be wrapped in a function call then just use 'return true' instead of the break, and add a 'return false' statement after the for loop.

query runs a standard SQL statement and requires you to properly escape all data to avoid SQL Injections and other issues.

execute runs a prepared statement which allows you to bind parameters to avoid the need to escape or quote the parameters. execute will also perform better if you are repeating a query multiple times. Example of prepared statements:

$sth = $dbh->prepare('SELECT name, colour, calories FROM fruit
    WHERE calories < :calories AND colour = :colour');
$sth->bindParam(':calories', $calories);
$sth->bindParam(':colour', $colour);
$sth->execute();
// $calories or $color do not need to be escaped or quoted since the
//    data is separated from the query

Best practice is to stick with prepared statements and execute for increased security.

See also: Are PDO prepared statements sufficient to prevent SQL injection?

If you want to differentiate between Windows 8.1 (6.3.9600) and Windows 8 (6.2.9200) use

(Get-CimInstance Win32_OperatingSystem).Version 

to get the proper version. [Environment]::OSVersion doesn't work properly in Windows 8.1 (it returns a Windows 8 version).

try this

  Calendar c = Calendar.getInstance(); 
  int mseconds = c.get(Calendar.MILLISECOND)

an alternative would be

 Calendar rightNow = Calendar.getInstance();

 long offset = rightNow.get(Calendar.ZONE_OFFSET) +
        rightNow.get(Calendar.DST_OFFSET);
 long sinceMid = (rightNow.getTimeInMils() + offset) %
       (24 * 60 * 60 * 1000);

  System.out.println(sinceMid + " milliseconds since midnight");

.tpl shows there is a smarty! Smarty is a template language to split out PHP code from HTML code. Which gives us to the ability to do design stuff on a page which has not included PHP code.

Just some thoughts on my case.

If you have changed the dbPath and logPath dirs to your custom values (say /data/mongodb/data, /data/mongodb/log), you must chown them to mongodb user, otherwise, the non-existent /data/db/ dir will be used.

sudo chown -R mongodb:mongodb /data/mongodb/

sudo service mongod restart

In Python 3 this is no longer an issue, and you really don't want to use list comprehension, coercion, filters, functions or lambdas for something like this.

Just use

popped = unpopped[:-1]

Remember that it's an immutable, so you will have to reassign the value if you want it to change

my_tuple = my_tuple[:-1]

Example

>>> foo= 3,5,2,4,78,2,1
>>> foo
(3, 5, 2, 4, 78, 2, 1)
foo[:-1]
(3, 5, 2, 4, 78, 2)

Actually, I have tried the above answer, but it did not seem to work.

To get my containers to acknowledge the ulimit change, I had to update the docker.conf file before starting them:

$ sudo service docker stop
$ sudo bash -c "echo \"limit nofile 262144 262144\" >> /etc/init/docker.conf"
$ sudo service docker start

public class Example extends Activity
{
    private ListView lv;
    ArrayList<String> arrlist=new ArrayList<String>();
    //let me assume that you are putting the values in this arraylist
    //Now convert your arraylist to array

    //You will get an exmaple here

    //http://www.java-tips.org/java-se-tips/java.lang/how-to-convert-an-arraylist-into-an-array.html 

    private String arr[]=convert(arrlist);
    @Override
    public void onCreate(Bundle bun)
    {
        super.onCreate(bun);
        setContentView(R.layout.main);
        lv=(ListView)findViewById(R.id.lv);
        lv.setAdapter(new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1 , arr));
        }
    }

You can't. Variables defined inside a method are local to that method.

If you want to share variables between methods, then you'll need to specify them as member variables of the class. Alternatively, you can pass them from one method to another as arguments (this isn't always applicable).

Looks like you're using instance methods instead of static ones.

If you don't want to create an object, you should declare all your methods static, so something like

private static void methodName(Argument args...)

If you want a variable to be accessible by all these methods, you should initialise it outside the methods and to limit its scope, declare it private.

private static int[][] array = new int[3][5];

Global variables are usually looked down upon (especially for situations like your one) because in a large-scale program they can wreak havoc, so making it private will prevent some problems at the least.

Also, I'll say the usual: You should try to keep your code a bit tidy. Use descriptive class, method and variable names and keep your code neat (with proper indentation, linebreaks etc.) and consistent.

Here's a final (shortened) example of what your code should be like:

public class Test3 {
    //Use this array in your methods
    private static int[][] scores = new int[3][5];

    /* Rather than just "Scores" name it so people know what
     * to expect
     */
    private static void createScores() {
        //Code...
    }
    //Other methods...

    /* Since you're now using static methods, you don't 
     * have to initialise an object and call its methods.
     */
    public static void main(String[] args){
        createScores();
        MD();   //Don't know what these do
        sumD(); //so I'll leave them.
    }
}

Ideally, since you're using an array, you would create the array in the main method and pass it as an argument across each method, but explaining how that works is probably a whole new question on its own so I'll leave it at that.

In commandline, there is a command dropuser available to do drop user from postgres.

$ dropuser someuser

I create a "Description" extension method and attach it to the enum so that i can get truly user-friendly naming that includes spaces and casing. I have never liked using the enum value itself as displayable text because it is something we developers use to create more readable code. It is not intended for UI display purposes. I want to be able to change the UI without going through and changing enums all over.

A quick & concise difference overview :

attr_accessor is an easy way to create read and write accessors in your class. It is used when you do not have a column in your database, but still want to show a field in your forms. This field is a “virtual attribute” in a Rails model.

virtual attribute – an attribute not corresponding to a column in the database.

attr_accessible is used to identify attributes that are accessible by your controller methods makes a property available for mass-assignment.. It will only allow access to the attributes that you specify, denying the rest.

Be sure that you are using the correct Microsoft.NET.Test.Sdk:

<PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.0.0" />

Do not use pre-release ones. Or you have to change to console app (not library). I have the similar issue, but with the latest release (15.0.0), it starts working again.

Also, you may have to add:

<ItemGroup>
  <Service Include="{82a7f48d-3b50-4b1e-b82e-3ada8210c358}" />
</ItemGroup>

but I do not think it is nessesary.

How about using an input group to style it on the same line?

Here's the final HTML to use:

<div class="input-group">
    <input type="text" class="form-control" placeholder="Start"/>
    <span class="input-group-addon">-</span>
    <input type="text" class="form-control" placeholder="End"/>
</div>

Which will look like this:

Here's a Stack Snippet Demo:

<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.css" rel="stylesheet"/>_x000D_
_x000D_
<div class="input-group">_x000D_
    <input type="text" class="form-control" placeholder="Start"/>_x000D_
    <span class="input-group-addon">-</span>_x000D_
    <input type="text" class="form-control" placeholder="End"/>_x000D_
</div>

I'll leave it as an exercise to the reader to translate it into an asp:textbox element

It is possible to view a html file from terminal using lynx or links. But none of those browswers support the onload javascript feature. By using lynx or links you will have to actively click the submit button.

I recommend to use SMO (Enable TCP/IP Network Protocol for SQL Server). However, it was not available in my case.

I rewrote the WMI commands from Krzysztof Kozielczyk to PowerShell.

# Enable TCP/IP

Get-CimInstance -Namespace root/Microsoft/SqlServer/ComputerManagement10 -ClassName ServerNetworkProtocol -Filter "InstanceName = 'SQLEXPRESS' and ProtocolName = 'Tcp'" |
Invoke-CimMethod -Name SetEnable

# Open the right ports in the firewall
New-NetFirewallRule -DisplayName 'MSSQL$SQLEXPRESS' -Direction Inbound -Action Allow -Protocol TCP -LocalPort 1433

# Modify TCP/IP properties to enable an IP address

$properties = Get-CimInstance -Namespace root/Microsoft/SqlServer/ComputerManagement10 -ClassName ServerNetworkProtocolProperty -Filter "InstanceName='SQLEXPRESS' and ProtocolName = 'Tcp' and IPAddressName='IPAll'"
$properties | ? { $_.PropertyName -eq 'TcpPort' } | Invoke-CimMethod -Name SetStringValue -Arguments @{ StrValue = '1433' }
$properties | ? { $_.PropertyName -eq 'TcpPortDynamic' } | Invoke-CimMethod -Name SetStringValue -Arguments @{ StrValue = '' }

# Restart SQL Server

Restart-Service 'MSSQL$SQLEXPRESS'

UPDATE:

This only worked for me because our existing generated html was wacky, generating labels along with radios and giving them both checked attribute.

Never mind, and big ups for Brilliand for bringing it up!

If your label is a sibling of a checkbox (which is usually the case), you can use the ~ sibling selector, and a label[for=your_checkbox_id] to address it... or give the label an id if you have multiple labels (like in this example where I use labels for buttons)

Came here looking for the same - but ended up finding my answer in the docs.

a label element with checked attribute can be selected like so:

label[checked] {
  ...
}

I know it's an old question, but maybe it helps someone out there :)

@interface MySingleton : NSObject
{
}

+ (MySingleton *)sharedSingleton;
@end

@implementation MySingleton

+ (MySingleton *)sharedSingleton
{
  static MySingleton *sharedSingleton;

  @synchronized(self)
  {
    if (!sharedSingleton)
      sharedSingleton = [[MySingleton alloc] init];

    return sharedSingleton;
  }
}

@end

[Source]

This seems to be a thread sync issue on certain Windows machines. If you're having this problem with Windows, try redirecting the output to a file: mvn clean install > output.txt

array=("word" "two words") # let's look for "two words"

using grep and printf:

(printf '%s\n' "${array[@]}" | grep -x -q "two words") && <run_your_if_found_command_here>

using for:

(for e in "${array[@]}"; do [[ "$e" == "two words" ]] && exit 0; done; exit 1) && <run_your_if_found_command_here>

For not_found results add || <run_your_if_notfound_command_here>

You can use the CONCAT function to do that:

UPDATE tbl SET col=CONCAT('test',col);

If you want to get cleverer and only update columns which don't already have test prepended, try

UPDATE tbl SET col=CONCAT('test',col)
WHERE col NOT LIKE 'test%';

Another PowerShell Solution...

This is not about running a batch script as admin per, but rather how to elevate another program from batch...

I have a batch file "wrapper" for an exe. They have the same "root file name", but alternate extensions. I am able to launch the exe as admin, and set the working directory to the one containing the script, with the following one line powershell invocation:

@powershell "Start-Process -FilePath '%~n0.exe' -WorkingDirectory '%~dp0' -Verb RunAs"

More info

There are a whole slew of additional Start-Process options as well that you can apply! Check out: https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.management/start-process?view=powershell-6

Note that I use the @ prefix. That's equivalent to @echo off for the one line. I use %~n0 here to get the "root name" of the batch script, then I concatenate the .exe to point it the adjancent binary. The use of %~dp0 provides the full path to the directory which the batch resides. And, of course, the -Verb RunAs parameter provides the elevation.

For some reason sudo su - jenkins does not log me to jenkins user, I ended up using different approach.

I was successful setting the global env variables using using jenkins config.xml at /var/lib/jenkins/config.xml (installed in Linux/ RHEL) - without using external plugins.

I simply had to stop jenkins add then add globalNodeProperties, and then restart.

Example, I'm defining variables APPLICATION_ENVIRONMENT and SPRING_PROFILES_ACTIVE to continious_integration below,

<?xml version='1.0' encoding='UTF-8'?>
<hudson>

  <globalNodeProperties>
    <hudson.slaves.EnvironmentVariablesNodeProperty>
      <envVars serialization="custom">
        <unserializable-parents/>
        <tree-map>
          <default>
            <comparator class="hudson.util.CaseInsensitiveComparator"/>
          </default>
          <int>2</int>
          <string>APPLICATION_ENVIRONMENT</string>
          <string>continious_integration</string>
          <string>SPRING_PROFILES_ACTIVE</string>
          <string>continious_integration</string>
        </tree-map>
      </envVars>
    </hudson.slaves.EnvironmentVariablesNodeProperty>
  </globalNodeProperties>
</hudson>

One thing .attr() can do that .prop() can't: affect CSS selectors

Here's an issue I didn't see in the other answers.

CSS selector [name=value]

• will respond to .attr('name', 'value')
• but not always to .prop('name', 'value')

.prop() affects only a few attribute-selectors

• input[name] (thanks @TimDown)

.attr() affects all attribute-selectors

• input[value]
• input[naame]
• span[name]
• input[data-custom-attribute] (neither will .data('custom-attribute') affect this selector)

you can specify fields like this:

LOAD XML LOCAL INFILE '/pathtofile/file.xml' 
INTO TABLE my_tablename(personal_number, firstname, ...); 

Replace

values = ",".join(value_list)

with

values = ','.join([str(i) for i in value_list])

OR

values = ','.join(str(value_list)[1:-1])

All the answers here seem to suggest setting the daylite parameter to false. This is incorrect for many timezones which change abbreviated names depending on the time of the year (e.g. EST vs EDT).

The solution below will give you the correct abbreviation according to the current date for the timezone.

val tz = TimeZone.getDefault()
val isDaylite = tz.inDaylightTime(Date())
val timezone = tz.getDisplayName(isDaylite, TimeZone.SHORT)

I use the following snippet to view all the rows in a table. Use a query to find all the rows. The returned objects are the class instances. They can be used to view/edit the values as required:

from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy import create_engine, Sequence
from sqlalchemy import String, Integer, Float, Boolean, Column
from sqlalchemy.orm import sessionmaker

Base = declarative_base()

class MyTable(Base):
    __tablename__ = 'MyTable'
    id = Column(Integer, Sequence('user_id_seq'), primary_key=True)
    some_col = Column(String(500))

    def __init__(self, some_col):
        self.some_col = some_col

engine = create_engine('sqlite:///sqllight.db', echo=True)
Session = sessionmaker(bind=engine)
session = Session()

for class_instance in session.query(MyTable).all():
    print(vars(class_instance))

session.close()

TypeDescriptor.GetConverter(PropertyObject).ConvertFrom(Value)

TypeDescriptor is class having method GetConvertor which accept a Type object and then you can call ConvertFrom method to convert the value for that specified object.

Math.trunc() function removes all the fractional digits.

For positive number it behaves exactly the same as Math.floor():

console.log(Math.trunc(89.13349)); // output is 89

For negative numbers it behaves same as Math.ceil():

console.log(Math.trunc(-89.13349)); //output is -89

credits : null

also works to disable the credits

For me changing the Emulated Performance setting to "Store a snapshot for faster startup" and unchecking "Use Host GPU" fixed the problem.

The element cannot directly inherit from <body> tag. You can try to put it in a <dir style="padding-left:0px;"></dir> tag.

I found a solution to deproxy a class using standard Java and JPA API. Tested with hibernate, but does not require hibernate as a dependency and should work with all JPA providers.

Onle one requirement - its necessary to modify parent class (Address) and add a simple helper method.

General idea: add helper method to parent class which returns itself. when method called on proxy, it will forward the call to real instance and return this real instance.

Implementation is a little bit more complex, as hibernate recognizes that proxied class returns itself and still returns proxy instead of real instance. Workaround is to wrap returned instance into a simple wrapper class, which has different class type than the real instance.

In code:

class Address {
   public AddressWrapper getWrappedSelf() {
       return new AddressWrapper(this);
   }
...
}

class AddressWrapper {
    private Address wrappedAddress;
...
}

To cast Address proxy to real subclass, use following:

Address address = dao.getSomeAddress(...);
Address deproxiedAddress = address.getWrappedSelf().getWrappedAddress();
if (deproxiedAddress instanceof WorkAddress) {
WorkAddress workAddress = (WorkAddress)deproxiedAddress;
}

I would simply do it with :

DELETE FROM mytest.instance;
ALTER TABLE mytest.instance AUTO_INCREMENT = 1;

Now, i'm being told that this will terminate the session (or is it all sessions?) in the 15th minute of use, regardless their activity.

No, that's not true. The session-timeout configures a per session timeout in case of inactivity.

Are these methods equivalent? Should I favour the web.xml config?

The setting in the web.xml is global, it applies to all sessions of a given context. Programatically, you can change this for a particular session.

setBackground() is the right method to use. Did you repaint after you changed it? If you change it before you make the panel (or its containing frame) visible it should work

Instead of using group concat() you can use just concat()

Select concat(Col1, ',', Col2) as Foo_Bar from Table1;

edit this only works in mySQL; Oracle concat only accepts two arguments. In oracle you can use something like select col1||','||col2||','||col3 as foobar from table1; in sql server you would use + instead of pipes.

I had an identical problem, which I solved by restarting my Python editor and shell. I had installed pywin32 but the new modules were not picked up until the restarts.

If you've already done that, do a search in your Python installation for win32api and you should find win32api.pyd under ${PYTHON_HOME}\Lib\site-packages\win32.

To configure Sublime to always use tabs try the adding the following to preferences->settings-user:

{
    "tab_size": 4,
    "translate_tabs_to_spaces": false
}

More information here: http://www.sublimetext.com/docs/2/indentation.html

I faced this issue when I was tring to link a locally created repo with a blank repo on github. Initially I was trying git remote set-url but I had to do git remote add instead.

git remote add origin https://github.com/VijayNew/NewExample.git

You can put in in a paragraph

<p style="text-align:center;"><a href="contact.html" class="button large hpbottom">Get Started</a></p>

To align a div in the center, you have to do 2 things: - Make the div a fixed width - Set the left and right margin properties variable

<div class="container">
 <div style="width:100px; margin:0 auto;">
     <span>a centered div</span>
  </div>
</div>

The proper way to determine the "type" of an object, which is a wobbly term in the Ruby world, is to call object.class.

Since classes can inherit from other classes, if you want to determine if an object is "of a particular type" you might call object.is_a?(ClassName) to see if object is of type ClassName or derived from it.

Normally type checking is not done in Ruby, but instead objects are assessed based on their ability to respond to particular methods, commonly called "Duck typing". In other words, if it responds to the methods you want, there's no reason to be particular about the type.

For example, object.is_a?(String) is too rigid since another class might implement methods that convert it into a string, or make it behave identically to how String behaves. object.respond_to?(:to_s) would be a better way to test that the object in question does what you want.

For example,

package main

import (
    "flag"
    "fmt"
    "os"
    "strconv"
)

func main() {
    flag.Parse()
    s := flag.Arg(0)
    // string to int
    i, err := strconv.Atoi(s)
    if err != nil {
        // handle error
        fmt.Println(err)
        os.Exit(2)
    }
    fmt.Println(s, i)
}

From Linux Terminal:

adb shell getprop | grep "model\|version.sdk\|manufacturer\|hardware\|platform\|revision\|serialno\|product.name\|brand"

From Windows PowerShell:

adb shell 
getprop | grep -e 'model' -e 'version.sdk' -e 'manufacturer' -e 'hardware' -e 'platform' -e 'revision' -e 'serialno' -e 'product.name' -e 'brand'

Sample output for Samsung:

[gsm.version.baseband]: [G900VVRU2BOE1]
[gsm.version.ril-impl]: [Samsung RIL v3.0]
[net.knoxscep.version]: [2.0.1]
[net.knoxsso.version]: [2.1.1]
[net.knoxvpn.version]: [2.2.0]
[persist.service.bdroid.version]: [4.1]
[ro.board.platform]: [msm8974]
[ro.boot.hardware]: [qcom]
[ro.boot.serialno]: [xxxxxx]
[ro.build.version.all_codenames]: [REL]
[ro.build.version.codename]: [REL]
[ro.build.version.incremental]: [G900VVRU2BOE1]
[ro.build.version.release]: [5.0]
[ro.build.version.sdk]: [21]
[ro.build.version.sdl]: [2101]
[ro.com.google.gmsversion]: [5.0_r2]
[ro.config.timaversion]: [3.0]
[ro.hardware]: [qcom]
[ro.opengles.version]: [196108]
[ro.product.brand]: [Verizon]
[ro.product.manufacturer]: [samsung]
[ro.product.model]: [SM-G900V]
[ro.product.name]: [kltevzw]
[ro.revision]: [14]
[ro.serialno]: [e5ce97c7]

The main reason was the change from the proxy installed by the company recently, which has blocked other ssh connections other than those to the company domain.

I was able to connect successfully by following these steps:

1. Double checked that the issue is what I am assuming by ssh -T [email protected]

It should end up in a timeout.

2. Edited the local remote URL by

ssh config --local -e

and from

[email protected]:asheeshjanghu/Journal.git

to

url=https://github.com/asheeshjanghu/Journal.git

The important point is that in the url you have to change at 2 places.

from git@ to https:// and from github:username to github/username

In the end verify by doing a git fetch

You could load each file separately, filter them with file.zipWithIndex().filter(_._2 > 0) and then union all the file RDDs.

If the number of files is too large, the union could throw a StackOverflowExeption.

What you describe is the default behavior. You have to detect and handle these events yourself by adding:

android:configChanges

to your manifest and then the changes that you want to handle. So for orientation, you would use:

android:configChanges="orientation"

and for the keyboard being opened or closed you would use:

android:configChanges="keyboardHidden"

If you want to handle both you can just separate them with the pipe command like:

android:configChanges="keyboardHidden|orientation"

This will trigger the onConfigurationChanged method in whatever Activity you call. If you override the method you can pass in the new values.

Hope this helps.

This would make the buttons disappear, then an animation of "loading" would appear in their place and finally just display a success message.

$(function(){
    $('#submit').click(function(){
        $('#submit').hide();
        $("#form .buttons").append('<img src="assets/img/loading.gif" alt="Loading..." id="loading" />');
        $.post("sendmail.php",
                {emailFrom: nameVal, subject: subjectVal, message: messageVal},
                function(data){
                    jQuery("#form").slideUp("normal", function() {                 
                        $("#form").before('<h1>Success</h1><p>Your email was sent.</p>');
                    });
                }
        );
    });
});

To run something every 10 minutes past the hour.

from datetime import datetime, timedelta

while 1:
    print 'Run something..'

    dt = datetime.now() + timedelta(hours=1)
    dt = dt.replace(minute=10)

    while datetime.now() < dt:
        time.sleep(1)

Using jquery you can do this by following code:

<input type="text" id="tbxEmail" name="Email" placeholder="Some Text"/>

$('#tbxEmail').attr('placeholder','Some New Text');

Encapsulation: Is hiding unwanted/un-expected/propriety implementation details from the actual users of object. e.g.

List<string> list = new List<string>();
list.Sort(); /* Here, which sorting algorithm is used and hows its 
implemented is not useful to the user who wants to perform sort, that's 
why its hidden from the user of list. */

Abstraction: Is a way of providing generalization and hence a common way to work with objects of vast diversity. e.g.

class Aeroplane : IFlyable, IFuelable, IMachine
{ // Aeroplane's Design says:
  // Aeroplane is a flying object
  // Aeroplane can be fueled
  // Aeroplane is a Machine
}
// But the code related to Pilot, or Driver of Aeroplane is not bothered 
// about Machine or Fuel. Hence,
// pilot code:
IFlyable flyingObj = new Aeroplane();
flyingObj.Fly();
// fighter Pilot related code
IFlyable flyingObj2 = new FighterAeroplane();
flyingObj2.Fly();
// UFO related code 
IFlyable ufoObj = new UFO();
ufoObj.Fly();
// **All the 3 Above codes are genaralized using IFlyable,
// Interface Abstraction**
// Fly related code knows how to fly, irrespective of the type of 
// flying object they are.

// Similarly, Fuel related code:
// Fueling an Aeroplane
IFuelable fuelableObj = new Aeroplane();
fuelableObj.FillFuel();
// Fueling a Car
IFuelable fuelableObj2 = new Car(); // class Car : IFuelable { }
fuelableObj2.FillFuel();

// ** Fueling code does not need know what kind of vehicle it is, so far 
// as it can Fill Fuel**

Often you cannot replace a Label with a TextBlock as you want to the use the Target property (which sets focus to the targeted control when using the keyboard e.g. ALT+C in the sample code below), as that's all a Label really offers over a TextBlock.

However, a Label uses a TextBlock to render text (if a string is placed in the Content property, which it typically is); therefore, you can add a style for TextBlock inside the Label like so:

<Label              
    Content="_Content Text:"
    Target="{Binding ElementName=MyTargetControl}">
    <Label.Resources>
        <Style TargetType="TextBlock">
            <Setter Property="TextWrapping" Value="Wrap" />
        </Style>
    </Label.Resources>
 </Label>
 <CheckBox x:Name = "MyTargetControl" />

This way you get to keep the functionality of a Label whilst also being able to wrap the text.

We make Webapps statefull by overriding HTTP stateless behaviour by using session objects.When we use session objets state is carried but we still use HTTP only.

function bookmark(title, url) {
  if (window.sidebar) { 
    // Firefox
    window.sidebar.addPanel(title, url, '');
  } 
  else if (window.opera && window.print) 
  { 
    // Opera
    var elem = document.createElement('a');
    elem.setAttribute('href', url);
    elem.setAttribute('title', title);
    elem.setAttribute('rel', 'sidebar');
    elem.click(); //this.title=document.title;
  } 
  else if (document.all) 
  { 
    // ie
    window.external.AddFavorite(url, title);
  }
}

I used this & works great in IE, FF, Netscape. Chrome, Opera and safari do not support it!

I had the same issue. Solved it simply; I have (2) google accounts linked to my Play Store. It just so happens that I installed "an" app from "account B", and I was trying to rate it from "account A". So, switched accounts, and voilá.

Alex' comment looks good but I was still confused with using range. The following worked for me while working on a for condition using length within range.

{% for i in range(0,(nums['list_users_response']['list_users_result']['users'])| length) %}
<li>    {{ nums['list_users_response']['list_users_result']['users'][i]['user_name'] }} </li>
{% endfor %}

You could use tr, like this:

tr " " .

Example:

# echo "hello world" | tr " " .
hello.world

From man tr:

DESCRIPTION
     Translate, squeeze, and/or delete characters from standard input, writ- ing to standard output.

You can use percentage for width.

<style name="Theme.Holo.Dialog.MinWidth">
<item name="android:windowMinWidthMajor">70%</item>

I used Holo Theme for this example.

A simplified version of Daniel's answer above. This function gets a yes or no from user in an alert dialog but could easily be modified to get other input.

private boolean mResult;
public boolean getYesNoWithExecutionStop(String title, String message, Context context) {
    // make a handler that throws a runtime exception when a message is received
    final Handler handler = new Handler() {
        @Override
        public void handleMessage(Message mesg) {
            throw new RuntimeException();
        } 
    };

    // make a text input dialog and show it
    AlertDialog.Builder alert = new AlertDialog.Builder(context);
    alert.setTitle(title);
    alert.setMessage(message);
    alert.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int whichButton) {
            mResult = true;
            handler.sendMessage(handler.obtainMessage());
        }
    });
    alert.setNegativeButton("No", new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int whichButton) {
            mResult = false;
            handler.sendMessage(handler.obtainMessage());
        }
    });
    alert.show();

    // loop till a runtime exception is triggered.
    try { Looper.loop(); }
    catch(RuntimeException e2) {}

    return mResult;
}

The view-source url prefix trick didn't work for me using chrome on an iphone. There are apps I could have installed to do this I guess but for whatever reason I just preferred to do it myself rather than install 'yet another app'.

I found this nice quick tutorial for how to setup a bookmark on mobile safari that will automatically open the view source of a page: https://appletoolbox.com/2014/03/how-to-view-webpage-html-source-codes-on-ipad-iphone-no-app-required/

It worked flawlessly for me and now I have it set as a permanent bookmark any time I want, with no app installed.

Edit: There are basically 6 steps which should work for either Chrome or Safari. Instructions for Safari are:

1. Open Safari and browse to an arbitrary page.
2. Select the "Share" (or action") button in Safari (looks like a square with an arrow coming out of the top).
3. Select "Add Bookmark"
4. Delete the page title and replace it with something useful like "Show Page Source". Click Save.
5. Next browse to this exact Stack Overflow answer on your phone and copy the javascript code below to your phone clipboard (code credit: Rob Flaherty):

javascript:(function(){var a=window.open('about:blank').document;a.write('<!DOCTYPE html><html><head><title>Source of '+location.href+'</title><meta name="viewport" content="width=device-width" /></head><body></body></html>');a.close();var b=a.body.appendChild(a.createElement('pre'));b.style.overflow='auto';b.style.whiteSpace='pre-wrap';b.appendChild(a.createTextNode(document.documentElement.innerHTML))})();

6. Open the "Bookmarks" in Safari and opt to Edit the newly created Show Page Source bookmark. Delete whatever was previously saved in the Address field and instead paste in the Javascript code. Save it.
7. (Optional) Profit!

Try doing this, there's no special character to concatenate in bash :

mystring="${arg1}12${arg2}endoffile"

explanations

If you don't put brackets, you will ask bash to concatenate $arg112 + $argendoffile (I guess that's not what you asked) like in the following example :

mystring="$arg112$arg2endoffile"

The brackets are delimiters for the variables when needed. When not needed, you can use it or not.

another solution

$ arg1=foo
$ arg2=bar
$ mystring="$arg1"
$ mystring+="12"
$ mystring+="$arg2"
$ mystring+="endoffile"
$ echo "$mystring"
foo12barendoffile

See http://mywiki.wooledge.org/BashFAQ/013

This is a simple one line way to do it:

    try {
        URL url = new URL("http://....");
        Bitmap image = BitmapFactory.decodeStream(url.openConnection().getInputStream());
    } catch(IOException e) {
        System.out.println(e);
    }

Prior to running python, type cd in the commmand line, and it will tell you the directory you are currently in. When python runs, it can only access files in this directory. hello.py needs to be in this directory, so you can move hello.py from its existing location to this folder as you would move any other file in Windows or you can change directories and run python in the directory hello.py is.

Edit: Python cannot access the files in the subdirectory unless a path to it provided. You can access files in any directory by providing the path. python C:\Python27\Projects\hello.p

you can also check by

ps -ef |grep -i ora

As stated in the Google documentation, Add the latest version of the Google Service plugin (4.0.1 on 06/04/18). Hope this hepls!

buildscript {
    // ...
    dependencies {
        // ...
        classpath 'com.google.gms:google-services:4.0.1' // google-services plugin
    }
}
`

Here is one more option without too much JS hassle: https://github.com/kmahelona/ipython_notebook_goodies

Here's a good library I've found very useful in this context.

https://github.com/mathiasbynens/he

According to its author:

It supports all standardized named character references as per HTML, handles ambiguous ampersands and other edge cases just like a browser would, has an extensive test suite, and — contrary to many other JavaScript solutions — he handles astral Unicode symbols just fine

Here's the lowdown on Mac IDE's for PHP

NetBeans Free! Plus, the best functionality of all offerings. Includes inline database connections, code completion, syntax checking, color coding, split views etc. Downside: It's a memory hog on the Mac. Be prepared to allow half a gig of memory then you'll need to shut down and restart.

Komodo A step above a Text Editor. Does not support database connections or split views. Color coding and syntax checking are there to an extent. The project control on Komodo is very unwieldy and strange compared to the other IDEs.

Aptana The perfect solution. Eclipsed based and uses the Aptana PHP plug in. Real time syntax checking, word wrap, drag and drop split views, database connections and a slew of other excellent features. Downside: Not a supported product any more. Aptana Studio 2.0+ uses PDT which is a watered down, under-developed (at present) php plug in.

Zend Studio - Almost identical to Aptana, except no word wrap and you can't change alot of the php configuration on the MAC apparently due to bugs.

Coda Created by Panic, Coda has nice integration with source control and their popular FTP client, transmit. They also have a collaboration feature which is cool for pair-programming.

PhpEd with Parallels or Wine. The best IDE for Windows has all the feature you could need and is worth the effort to pass it through either Parallels or Wine.

Dreamweaver Good for Javascript/HTML/CSS, but only marginal for PHP. There is some color coding, but no syntax checking or code completion native to the package. Database connections are supported, and so are split views.

I'm using NetBeans, which is free, and feature rich. I can deal with the memory issues for a while, but it could be slow coming to the MAC.

Cheers! Korky Kathman Senior Partner Entropy Dynamics, LLC

public static class DbEx {
    public static IEnumerable<T> SqlQueryPrm<T>(this System.Data.Entity.Database database, string sql, object parameters) {
        using (var tmp_cmd = database.Connection.CreateCommand()) {
            var dict = ToDictionary(parameters);
            int i = 0;
            var arr = new object[dict.Count];
            foreach (var one_kvp in dict) {
                var param = tmp_cmd.CreateParameter();
                param.ParameterName = one_kvp.Key;
                if (one_kvp.Value == null) {
                    param.Value = DBNull.Value;
                } else {
                    param.Value = one_kvp.Value;
                }
                arr[i] = param;
                i++;
            }
            return database.SqlQuery<T>(sql, arr);
        }
    }
    private static IDictionary<string, object> ToDictionary(object data) {
        var attr = System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.Instance;
        var dict = new Dictionary<string, object>();
        foreach (var property in data.GetType().GetProperties(attr)) {
            if (property.CanRead) {
                dict.Add(property.Name, property.GetValue(data, null));
            }
        }
        return dict;
    }
}

Usage:

var names = db.Database.SqlQueryPrm<string>("select name from position_category where id_key=@id_key", new { id_key = "mgr" }).ToList();

This is the accepted answer written in a decorative way:

Toolkit.getDefaultToolkit()
        .getSystemClipboard()
        .setContents(
                new StringSelection(txtMySQLScript.getText()),
                null
        );

If you want to modify this I'd go with either of the following:

List<string[]> results;

-- or --

List<List<string>> results;

depending on your needs...

You got half of the answer! Now that you created the event handler, you need to hook it to the form so that it actually gets called when the form is loading. You can achieve that by doing the following:

 public class ProgramViwer : Form{
  public ProgramViwer()
  {
       InitializeComponent();
       Load += new EventHandler(ProgramViwer_Load);
  }
  private void ProgramViwer_Load(object sender, System.EventArgs e)
  {
       formPanel.Controls.Clear();
       formPanel.Controls.Add(wel);
  }
}

In Git, to "fast forward" means to update the HEAD pointer in such a way that its new value is a direct descendant of the prior value. In other words, the prior value is a parent, or grandparent, or grandgrandparent, ...

Fast forwarding is not possible when the new HEAD is in a diverged state relative to the stream you want to integrate. For instance, you are on master and have local commits, and git fetch has brought new upstream commits into origin/master. The branch now diverges from its upstream and cannot be fast forwarded: your master HEAD commit is not an ancestor of origin/master HEAD. To simply reset master to the value of origin/master would discard your local commits. The situation requires a rebase or merge.

If your local master has no changes, then it can be fast-forwarded: simply updated to point to the same commit as the latestorigin/master. Usually, no special steps are needed to do fast-forwarding; it is done by merge or rebase in the situation when there are no local commits.

Is it ok to assume that fast-forward means all commits are replayed on the target branch and the HEAD is set to the last commit on that branch?

No, that is called rebasing, of which fast-forwarding is a special case when there are no commits to be replayed (and the target branch has new commits, and the history of the target branch has not been rewritten, so that all the commits on the target branch have the current one as their ancestor.)

Still amazed that none recommended the guava library for this.

 //Sample taken from a current working project of mine just to illustrate the idea

    @Override
    public int hashCode(){
        return Objects.hashCode(this.getDate(), this.datePattern);
    }

    @Override
    public boolean equals(Object obj){
        if ( ! obj instanceof DateAndPattern ) {
            return false;
        }
        return Objects.equal(((DateAndPattern)obj).getDate(), this.getDate())
                && Objects.equal(((DateAndPattern)obj).getDate(), this.getDatePattern());
    }

To save LogCat log to file programmatically on your device use for example this code:

String filePath = Environment.getExternalStorageDirectory() + "/logcat.txt";
Runtime.getRuntime().exec(new String[]{"logcat", "-f", filepath, "MyAppTAG:V", "*:S"});

"MyAppTAG:V" sets the priority level for all tags to Verbose (lowest priority)

"*:S" sets the priority level for all tags to "silent"

More information about logcat here.

First, attempt to pull from the same refspec that you are trying to push to.

If this does not work, you can force a git push by using git push -f <repo> <refspec>, but use caution: this method can cause references to be deleted on the remote repository.

If your id is incremental then use something like

delete from table where id < (select max(id) from table)-N

For me the Issue was I didn't run the setup as Administrator, after running the setup as administrator the message go away and I was prompted to install and continue process.

Contrary to what some of the other answers have said, on most systems, in the absence of a pragma or compiler option, the size of the structure will be at least 6 bytes and, on most 32-bit systems, 8 bytes. For 64-bit systems, the size could easily be 16 bytes. Alignment does come into play; always. The sizeof a single struct has to be such that an array of those sizes can be allocated and the individual members of the array are sufficiently aligned for the processor in question. Consequently, if the size of the struct was 5 as others have hypothesized, then an array of two such structures would be 10 bytes long, and the char pointer in the second array member would be aligned on an odd byte, which would (on most processors) cause a major bottleneck in the performance.

While respond_to? will return true only for public methods, checking for "method definition" on a class may also pertain to private methods.

On Ruby v2.0+ checking both public and private sets can be achieved with

Foo.private_instance_methods.include?(:bar) || Foo.instance_methods.include?(:bar)

Joda-Time

I think you can use Joda-Time to do this. Take a look at the DateTime class and its getMillisOfSecond method. Something like

int ms = new DateTime().getMillisOfSecond() ;

As of TypeScript 1.6, properties in object literals that do not have a corresponding property in the type they're being assigned to are flagged as errors.

Usually this error means you have a bug (typically a typo) in your code, or in the definition file. The right fix in this case would be to fix the typo. In the question, the property callbackOnLoactionHash is incorrect and should have been callbackOnLocationHash (note the mis-spelling of "Location").

This change also required some updates in definition files, so you should get the latest version of the .d.ts for any libraries you're using.

Example:

interface TextOptions {
    alignment?: string;
    color?: string;
    padding?: number;
}
function drawText(opts: TextOptions) { ... }
drawText({ align: 'center' }); // Error, no property 'align' in 'TextOptions'

But I meant to do that

There are a few cases where you may have intended to have extra properties in your object. Depending on what you're doing, there are several appropriate fixes

Type-checking only some properties

Sometimes you want to make sure a few things are present and of the correct type, but intend to have extra properties for whatever reason. Type assertions (<T>v or v as T) do not check for extra properties, so you can use them in place of a type annotation:

interface Options {
    x?: string;
    y?: number;
}

// Error, no property 'z' in 'Options'
let q1: Options = { x: 'foo', y: 32, z: 100 };
// OK
let q2 = { x: 'foo', y: 32, z: 100 } as Options;
// Still an error (good):
let q3 = { x: 100, y: 32, z: 100 } as Options;

These properties and maybe more

Some APIs take an object and dynamically iterate over its keys, but have 'special' keys that need to be of a certain type. Adding a string indexer to the type will disable extra property checking

Before

interface Model {
  name: string;
}
function createModel(x: Model) { ... }

// Error
createModel({name: 'hello', length: 100});

After

interface Model {
  name: string;
  [others: string]: any;
}
function createModel(x: Model) { ... }

// OK
createModel({name: 'hello', length: 100});

This is a dog or a cat or a horse, not sure yet

interface Animal { move; }
interface Dog extends Animal { woof; }
interface Cat extends Animal { meow; }
interface Horse extends Animal { neigh; }

let x: Animal;
if(...) {
  x = { move: 'doggy paddle', woof: 'bark' };
} else if(...) {
  x = { move: 'catwalk', meow: 'mrar' };
} else {
  x = { move: 'gallop', neigh: 'wilbur' };
}

Two good solutions come to mind here

Specify a closed set for x

// Removes all errors
let x: Dog|Cat|Horse;

or Type assert each thing

// For each initialization
  x = { move: 'doggy paddle', woof: 'bark' } as Dog;

This type is sometimes open and sometimes not

A clean solution to the "data model" problem using intersection types:

interface DataModelOptions {
  name?: string;
  id?: number;
}
interface UserProperties {
  [key: string]: any;
}
function createDataModel(model: DataModelOptions & UserProperties) {
 /* ... */
}
// findDataModel can only look up by name or id
function findDataModel(model: DataModelOptions) {
 /* ... */
}
// OK
createDataModel({name: 'my model', favoriteAnimal: 'cat' });
// Error, 'ID' is not correct (should be 'id')
findDataModel({ ID: 32 });

See also https://github.com/Microsoft/TypeScript/issues/3755

Assuming you mean UNIX shell commands, just run

echo >> file.txt

echo prints a newline, and the >> tells the shell to append that newline to the file, creating if it doesn't already exist.

In order to properly answer the question, though, I'd need to know what you would want to happen if the file already does exist. If you wanted to replace its current contents with the newline, for example, you would use

echo > file.txt

EDIT: and in response to Justin's comment, if you want to add the newline only if the file didn't already exist, you can do

test -e file.txt || echo > file.txt

At least that works in Bash, I'm not sure if it also does in other shells.

All other answers here depends on adding code the the notebook(!)

In my opinion is bad practice to hardcode a specific path into the notebook code, or otherwise depend on the location, since this makes it really hard to refactor you code later on. Instead I would recommend you to add the root project folder to PYTHONPATH when starting up your Jupyter notebook server, either directly from the project folder like so

env PYTHONPATH=`pwd` jupyter notebook

or if you are starting it up from somewhere else, use the absolute path like so

env PYTHONPATH=/Users/foo/bar/project/ jupyter notebook

Specifically: Is there a better way to handle being passed a zero denominator? Setting the denominator to 1 is feels mighty arbitrary. How can I do this right?

I would say throw a ArithmeticException for divide by zero, since that's really what's happening:

public Fraction(int numerator, int denominator) {
    if(denominator == 0)
        throw new ArithmeticException("Divide by zero.");
    this.numerator = numerator;
    this.denominator = denominator;
}

Instead of "Divide by zero.", you might want to make the message say "Divide by zero: Denominator for Fraction is zero."

cd to folder containing .svn

rm -rf .svn
svn co http://mon.svn/mondepot/ . --force

Note that java11 now offers a new HTTP api HttpClient, which supports fully asynchronous operation, using java's CompletableFuture.

It also supports a synchronous version, with calls like send, which is synchronous, and sendAsync, which is asynchronous.

Example of an async request (taken from the apidoc):

   HttpRequest request = HttpRequest.newBuilder()
        .uri(URI.create("https://example.com/"))
        .timeout(Duration.ofMinutes(2))
        .header("Content-Type", "application/json")
        .POST(BodyPublishers.ofFile(Paths.get("file.json")))
        .build();
   client.sendAsync(request, BodyHandlers.ofString())
        .thenApply(HttpResponse::body)
        .thenAccept(System.out::println);

In jQuery, you can use

$(".className").attr("style","");

CharSequence is a readable sequence of char values which implements String. it has 4 methods

1. charAt(int index)
2. length()
3. subSequence(int start, int end)
4. toString()

Please refer documentation CharSequence documentation

You can use a much simpler formula. I just created a new workbook to test it.

Column A = Date1 | Column B = Date2 | Column C = Date3

Highlight Column A and enter the conditional formatting formula:

=AND(A1>B1,A1<C1)

This trick only requires one command: type net session into the command prompt.

If you are NOT an admin, you get an access is denied message.

System error 5 has occurred.

Access is denied.

If you ARE an admin, you get a different message, the most common being:

There are no entries in the list.

From MS Technet:

Used without parameters, net session displays information about all sessions with the local computer.

Update

I typically used docker attach to see what STDOUT was displaying, for troubleshooting containers. I just found docker logs --follow 621a4334f97b, which lets me see the STDOUT whilst also being able to ctrl+c off of it without affecting container operation! Exactly what I've always wanted.

... naturally you'll need to substitue in your own container ID.

Original Answer

I wanted to leave the container running, but had attached without starting the container with -it. My solution was to sacrifice my SSH connection instead (since I was SSHed into the machine that was running the containers). Killing that ssh session left the container intact but detached me from it.

Please note that Arrays.stream(arr) create a LongStream (or IntStream, ...) instead of Stream so the map function cannot be used to modify the type. This is why .mapToLong, mapToObject, ... functions are provided.

Take a look at why-cant-i-map-integers-to-strings-when-streaming-from-an-array

If you have the width set in the viewport :

<meta name = "viewport" content = "width=device-width; initial-scale=1.0;
 maximum-scale=1.0;" />

And then change the orientation it will randomly zoom in sometimes (especially if you are dragging on the screen) to fix this don't set a width here I used :

<meta id="viewport" name="viewport" content="initial-scale=1.0; user-scalable=0;
minimum-scale=1.0; maximum-scale=1.0" />

This fixes the zoom whatever happens then you can use either window.onorientationchange event or if you want it to be platform independant (handy for testing) the window.innerWidth method.

Fancy C# extension method based on previous answers:

public static IWebElement SetAttribute(this IWebElement element, string name, string value)
{
    var driver = ((IWrapsDriver)element).WrappedDriver;
    var jsExecutor = (IJavaScriptExecutor)driver;
    jsExecutor.ExecuteScript("arguments[0].setAttribute(arguments[1], arguments[2]);", element, name, value);

    return element;
}

Usage:

driver.FindElement(By.Id("some_option")).SetAttribute("selected", "selected");

This problem occurs because while creating the AVD manager in the "Create new Android virtual device(AVD)" dialog window ,"Snapshot" was marked as "Enabled" by me.

Solution:

Create a new AVD manager with the "Enabled" checkbox not checked and then try running the project with the newly created AVD manager as "Target" , the problem will not occur anymore

While a lot of the above answers give ways to embed an image using a file or with Python code, there is a way to embed an image in the jupyter notebook itself using only markdown and base64!

To view an image in the browser, you can visit the link data:image/png;base64,**image data here** for a base64-encoded PNG image, or data:image/jpg;base64,**image data here** for a base64-encoded JPG image. An example link can be found at the end of this answer.

To embed this into a markdown page, simply use a similar construct as the file answers, but with a base64 link instead: ![**description**](data:image/**type**;base64,**base64 data**). Now your image is 100% embedded into your Jupyter Notebook file!

Example link: data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKCAYAAACNMs+9AAAABHNCSVQICAgIfAhkiAAAAD9JREFUGJW1jzEOADAIAqHx/1+mE4ltNXEpI3eJQknCIGsiHSLJB+aO/06PxOo/x2wBgKR2jCeEy0rOO6MDdzYQJRcVkl1NggAAAABJRU5ErkJggg==

Example markdown: ![smile](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKCAYAAACNMs+9AAAABHNCSVQICAgIfAhkiAAAAD9JREFUGJW1jzEOADAIAqHx/1+mE4ltNXEpI3eJQknCIGsiHSLJB+aO/06PxOo/x2wBgKR2jCeEy0rOO6MDdzYQJRcVkl1NggAAAABJRU5ErkJggg==)

POSIX recognizes multiple variations on regular expressions - basic regular expressions (BRE) and extended regular expressions (ERE). And even then, there are quirks because of the historical implementations of the utilities standardized by POSIX.

There isn't a simple rule for when to use which notation, or even which notation a given command uses.

Check out Jeff Friedl's Mastering Regular Expressions book.

If your building that SQL in a tool like TOAD or other SQL oriented IDE they often have copy markup to the clipboard. For example, TOAD has a CTRL+M which takes the SQL in your editor and does exactly what you have in your code above. It also covers the reverse... when your grabbing a formatted string out of your Java and want to execute it in TOAD. Pasting the SQL back into TOAD and perform a CTRL+P to remove the multi-line quotes.

One way to get around this is to use implicit casting:

bool DoesEntityExist<T>(T entity, Guid guid, ITransaction transaction) where T : IGloballyIdentifiable;

calling it like so:

DoesEntityExist(entity, entityGuid, transaction);

Going a step further, you can turn it into an extension method (it will need to be declared in a static class):

static bool DoesEntityExist<T>(this T entity, Guid guid, ITransaction transaction) where T : IGloballyIdentifiable;

calling as so:

entity.DoesEntityExist(entityGuid, transaction);

add this permission in your manifest and than use the above code to change WiFi state:

 <!--permission ge enable and disable WIFI in android-->
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE"/>

This has been plaguing me for years, on and off. There are a number of fixes around, but they seem hit and miss. It was still occurring in Excel 2010 (happening to me May 2014), and is still occurring in Excel 2013 by some reports. The best description I have found that matches my situation at least (Excel 2010, no RDP involved, no Print Preview involved) is here:

Microsoft Excel Support Team Blog: ActiveX and form controls resize themselves when clicked or doing a print preview (in Excel 2010)

(This might not help for users of Excel 2013 sorry)

EDIT: Adding detail in case technet link ever goes dead, the technet article says:

FIRSTLY install Microsoft Hotfix 2598144 for Excel 2010, available: here.

SECONDLY, if your symptom is "An ActiveX button changes to the incorrect size after you click it in an Excel 2010 worksheet", then you should:

• Click Start, click Run, type regedit in the Open box, and then click OK.
• Locate and then select the following registry subkey HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel\Options
• On the Edit menu, point to New, and then click DWORD (32-bit) value.
• Type LegacyAnchorResize, and then press Enter.
• In the Details pane, right-click LegacyAnchorResize, and then click Modify.
• In the Value data box, type 1, and then click OK.
• Exit Registry Editor.

OR SECONDLY, if your symptom is "A button form control is displayed incorrectly in a workbook after you view the print preview of the workbook in Excel 2010", then you should:

• Click Start, click Run, type regedit in the Open box, and then click OK.
• Locate and then select the following registry subkey: HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel\Options
• On the Edit menu, point to New, and then click DWORD (32-bit) value.
• Type MultiSheetPrint, and then press Enter.
• In the Details pane, right-click MultiSheetPrint, and then click Modify.
• In the Value data box, type 1, and then click OK.
• Select the following registry subkey again: HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel\Options
• On the Edit menu, point to New, and then click DWORD (32-bit) value.
• Type LegacyAnchorResize, and then press Enter.
• In the Details pane, right-click LegacyAnchorResize, and then click Modify.
• In the Value data box, type 1, and then click OK.
• Exit Registry Editor.

OR SECONDLY, if your symptom is "An ActiveX button is changed to an incorrect size in an Excel 2010 worksheet after you view the print preview of the worksheet", then you should:

• Click Start, click Run, type regedit in the Open box, and then click OK.
• Locate and then select the following registry subkey: HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel\Options
• On the Edit menu, point to New, and then click DWORD (32-bit) value.
• Type LegacyAnchorResize, and then press Enter.
• In the Details pane, right-click LegacyAnchorResize, and then click Modify.
• In the Value data box, type 1, and then click OK.
• Exit Registry Editor.

Good luck. This issue is such a pain...

Fix the typos in your code ("document" is spelled wrong on lines 3 & 4 of your function, and change the onclick event handler to read: onclick="show_update_profile()" and then you'll be fine. You should really follow jmort's advice and simply set up 2 css classes that you switch between in javascript -- it would make your life a lot easier and save yourself from all the extra typing. The typos you've committed are a perfect example of why this is the better approach.

For brownie points, you should also check out element.addEventListener for assigning event handlers to your elements.

I really like stackPusher's ConvertToLetter function as a solution. However, in working with it I noticed several errors occurring at very specific inputs due to some flaws in the math. For example, inputting 392 returns 'N\', 418 returns 'O\', 444 returns 'P\', etc.

I reworked the function and the result produces the correct output for all input up to 703 (which is the first triple-letter column index, AAA).

Function ConvertToLetter2(iCol As Integer) As String
    Dim First As Integer
    Dim Second As Integer
    Dim FirstChar As String
    Dim SecondChar As String

    First = Int(iCol / 26)
    If First = iCol / 26 Then
        First = First - 1
    End If
    If First = 0 Then
        FirstChar = ""
    Else
        FirstChar = Chr(First + 64)
    End If

    Second = iCol Mod 26
    If Second = 0 Then
        SecondChar = Chr(26 + 64)
    Else
        SecondChar = Chr(Second + 64)
    End If

    ConvertToLetter2 = FirstChar & SecondChar

End Function

Basically, no. The following would be what you were after in theory:

div.a < div { border: solid 3px red; }

Unfortunately it doesn't exist.

There are a few write-ups along the lines of "why the hell not". A well fleshed out one by Shaun Inman is pretty good:

http://www.shauninman.com/archive/2008/05/05/css_qualified_selectors

Bind any html input

<input id="element-to-bind" type="text">

define two functions:

function bindValue(objectToBind) {
var elemToBind = document.getElementById(objectToBind.id)    
elemToBind.addEventListener("change", function() {
    objectToBind.value = this.value;
})
}

function proxify(id) { 
var handler = {
    set: function(target, key, value, receiver) {
        target[key] = value;
        document.getElementById(target.id).value = value;
        return Reflect.set(target, key, value);
    },
}
return new Proxy({id: id}, handler);
}

use the functions:

var myObject = proxify('element-to-bind')
bindValue(myObject);

Since I could not run the C executable that way, I wrote a simple shell script that does the following

cd /..path_to_shell_script
./c_executable_name

In the cron jobs list, I call the shell script.

Try this code

ArrayList<String> list = new ArrayList<String>();     
JSONArray jsonArray = (JSONArray)jsonObject; 
int len = jsonArray.length();
if (jsonArray != null) { 
   for (int i=0;i<len;i++){ 
    list.add(jsonArray.get(i).toString());
   } 
}
//Remove the element from arraylist
list.remove(position);
//Recreate JSON Array
JSONArray jsArray = new JSONArray(list);

Edit: Using ArrayList will add "\" to the key and values. So, use JSONArray itself

JSONArray list = new JSONArray();     
JSONArray jsonArray = new JSONArray(jsonstring); 
int len = jsonArray.length();
if (jsonArray != null) { 
   for (int i=0;i<len;i++)
   { 
       //Excluding the item at position
        if (i != position) 
        {
            list.put(jsonArray.get(i));
        }
   } 
}

Setting cookie in the express is easy

1. first install cookie parser

npm install cookie parser

2. using middleware

const cookieParser = require('cookie-parser');
app.use(cookieParser());

3. Set cookie know more

res.cookie('cookieName', '1', { expires: new Date(Date.now() + 900000), httpOnly: true })

4. Accessing that cookie know more

console.dir(req.cookies.cookieName)

I know this is an old post, but here's how I solved it (along with converting null values to empty string) in C# using an extension method.

Create a static class with something like the following:

    /// <summary>
    /// Wraps value in quotes if necessary and converts nulls to empty string
    /// </summary>
    /// <param name="value"></param>
    /// <returns>String ready for use in CSV output</returns>
    public static string Q(this string value)
    {
        if (value == null)
        {
            return string.Empty;
        }
        if (value.Contains(",") || (value.Contains("\"") || value.Contains("'") || value.Contains("\\"))
        {
            return "\"" + value + "\"";
        }
        return value;
    }

Then for each string you're writing to CSV, instead of:

stringBuilder.Append( WhateverVariable );

You just do:

stringBuilder.Append( WhateverVariable.Q() );

The most straight forward way is to use an XmlWriter object. This can be used to produce valid HTML and will take care of all of the nasty escape sequences for you.

• http://msdn.microsoft.com/en-us/library/system.xml.xmlwriter.aspx

You can follow either of the following ways.

var str = '54';

var num = +str; //easy way by using + operator
var num = parseInt(str); //by using the parseInt operation 

Working in 2019 By default, you can compile your name.c using the terminal

 cc name.c

and if you need to run just write

 ./name.out

I hope you find it helpfull !!

i use ViewBag For Project and Model for task so in this way i am using two model in single view and in controller i defined viewbag's value or data

List<tblproject> Plist = new List<tblproject>();_x000D_
            Plist = ps.getmanagerproject(c, id);_x000D_
_x000D_
            ViewBag.projectList = Plist.Select(x => new SelectListItem_x000D_
            {_x000D_
                Value = x.ProjectId.ToString(),_x000D_
                Text = x.Title_x000D_
            });

and in view tbltask and projectlist are my two diff models

@{

IEnumerable<SelectListItem> plist = ViewBag.projectList;

} @model List

I know the question has been answered, but in my case I was trying to send the content of a text file to the Slack Webhook api and for some reason the above answer did not work. Anywho, this is what finally did the trick for me:

curl -X POST -H --silent --data-urlencode "payload={\"text\": \"$(cat file.txt | sed "s/\"/'/g")\"}" https://hooks.slack.com/services/XXX

This simple way to do your task:

setContentView(R.id.main);    
ImageView iv = (ImageView) findViewById(R.id.left);
int width = 60;
int height = 60;
LinearLayout.LayoutParams parms = new LinearLayout.LayoutParams(width,height);
iv.setLayoutParams(parms);

and another way if you want to give screen size in height and width then use below code :

setContentView(R.id.main);    
Display display = getWindowManager().getDefaultDisplay();
ImageView iv = (LinearLayout) findViewById(R.id.left);
int width = display.getWidth(); // ((display.getWidth()*20)/100)
int height = display.getHeight();// ((display.getHeight()*30)/100)
LinearLayout.LayoutParams parms = new LinearLayout.LayoutParams(width,height);
iv.setLayoutParams(parms);

hope use full to you.

As aziz-shaikh has pointed out, there is no way to suppress an individual column from the * directive, however you might be able to use the following hack:

SELECT CONCAT(c.FIRSTNAME, ',', c.LASTNAME) AS FIRSTNAME,
       c.*
FROM   `customer` c;

Doing this will cause the second occurrence of the FIRSTNAME column to adopt the alias FIRSTNAME_1 so you should be able to safely address your customised FIRSTNAME column. You need to alias the table because * in any position other than at the start will fail if not aliased.

Hope that helps!

This will gives you basic idea

    String str="";
    String str1="";
    Scanner S=new Scanner(System.in);
    System.out.println("Enter the string");
    str=S.nextLine();
    int length=str.length();
    for(int i=0;i<length;i++)
    {
        str1=str.substring(1, length-1);
    }
    System.out.println(str1);

How about this?

List<string> monValues = Application["mondayValues"] as List<string>;
int sum = monValues.ConvertAll(Convert.ToInt32).Sum();

I used VML(Vector Markup Language) based formatting in my email template. In VML Based you have write your code within comment I took help from this site.

https://litmus.com/blog/a-guide-to-bulletproof-buttons-in-email-design#supporttable

I'm surprised no one has mentioned sleepsort yet... Or haven't I noticed it? Anyway:

#!/bin/bash
function f() {
    sleep "$1"
    echo "$1"
}
while [ -n "$1" ]
do
    f "$1" &
    shift
done
wait

example usage:

./sleepsort.sh 5 3 6 3 6 3 1 4 7
./sleepsort.sh 8864569 7

In terms of performance it is terrible (especially the second example). Waiting almost 3.5 months to sort 2 numbers is kinda bad.

public static void setSelectedValue(JComboBox comboBox, int value)
    {
        ComboItem item;
        for (int i = 0; i < comboBox.getItemCount(); i++)
        {
            item = (ComboItem)comboBox.getItemAt(i);
            if (item.getValue().equalsIgnoreCase(value))
            {
                comboBox.setSelectedIndex(i);
                break;
            }
        }
    }

Hope this help :)

For fun, instead of using a loop to create the extra zeros:

function zeroPad(n,length){
  var s=n+"",needed=length-s.length;
  if (needed>0) s=(Math.pow(10,needed)+"").slice(1)+s;
  return s;
}

I have a slightly different perspective on the difference between a DATETIME and a TIMESTAMP. A DATETIME stores a literal value of a date and time with no reference to any particular timezone. So, I can set a DATETIME column to a value such as '2019-01-16 12:15:00' to indicate precisely when my last birthday occurred. Was this Eastern Standard Time? Pacific Standard Time? Who knows? Where the current session time zone of the server comes into play occurs when you set a DATETIME column to some value such as NOW(). The value stored will be the current date and time using the current session time zone in effect. But once a DATETIME column has been set, it will display the same regardless of what the current session time zone is.

A TIMESTAMP column on the other hand takes the '2019-01-16 12:15:00' value you are setting into it and interprets it in the current session time zone to compute an internal representation relative to 1/1/1970 00:00:00 UTC. When the column is displayed, it will be converted back for display based on whatever the current session time zone is. It's a useful fiction to think of a TIMESTAMP as taking the value you are setting and converting it from the current session time zone to UTC for storing and then converting it back to the current session time zone for displaying.

If my server is in San Francisco but I am running an event in New York that starts on 9/1/1029 at 20:00, I would use a TIMESTAMP column for holding the start time, set the session time zone to 'America/New York' and set the start time to '2009-09-01 20:00:00'. If I want to know whether the event has occurred or not, regardless of the current session time zone setting I can compare the start time with NOW(). Of course, for displaying in a meaningful way to a perspective customer, I would need to set the correct session time zone. If I did not need to do time comparisons, then I would probably be better off just using a DATETIME column, which will display correctly (with an implied EST time zone) regardless of what the current session time zone is.

TIMESTAMP LIMITATION

The TIMESTAMP type has a range of '1970-01-01 00:00:01' UTC to '2038-01-19 03:14:07' UTC and so it may not usable for your particular application. In that case you will have to use a DATETIME type. You will, of course, always have to be concerned that the current session time zone is set properly whenever you are using this type with date functions such as NOW().

Python 3.3 and later now uses the 2010 compiler. To best way to solve the issue is to just install Visual C++ Express 2010 for free.

Now comes the harder part for 64 bit users and to be honest I just moved to 32 bit but 2010 express doesn't come with a 64 bit compiler (you get a new error, ValueError: ['path'] ) so you have to install Microsoft SDK 7.1 and follow the directions here to get the 64 bit compiler working with python: Python PIP has issues with path for MS Visual Studio 2010 Express for 64-bit install on Windows 7

It may just be easier for you to use the 32 bit version for now. In addition to getting the compiler working, you can bypass the need to compile many modules by getting the binary wheel file from this locaiton http://www.lfd.uci.edu/~gohlke/pythonlibs/

Just download the .whl file you need, shift + right click the download folder and select "open command window here" and run

pip install module-name.whl 

I used that method on 64 bit 3.4.3 before I broke down and decided to just get a working compiler for pip compiles modules from source by default, which is why the binary wheel files work and having pip build from source doesn't.

People getting this (vcvarsall.bat) error on Python 2.7 can instead install "Microsoft Visual C++ Compiler for Python 2.7"

If you want a really simple solution (takes less than 5 minutes to integrate) and looks good right out of the box, then Clippy is a nice alternative to some of the more complex solutions.

It was written by a cofounder of GitHub. Example Flash embed code below:

<object
    classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000"
    width="110"
    height="14"
    id="clippy">

    <param name="movie" value="/flash/clippy.swf"/>
    <param name="allowScriptAccess" value="always"/>
    <param name="quality" value="high"/>
    <param name="scale" value="noscale"/>
    <param NAME="FlashVars" value="text=#{text}"/>
    <param name="bgcolor" value="#{bgcolor}"/>
    <embed
        src="/flash/clippy.swf"
        width="110"
        height="14"
        name="clippy"
        quality="high"
        allowScriptAccess="always"
        type="application/x-shockwave-flash"
        pluginspage="http://www.macromedia.com/go/getflashplayer"
        FlashVars="text=#{text}"
        bgcolor="#{bgcolor}"/>
</object>

Remember to replace #{text} with the text you need copied, and #{bgcolor} with a color.

Cast the variable to a float before doing the comparison:

if float(i) < float(x):

The problem is that you are comparing strings to floats, which will not work.

For Eclipse

A good way to add external JARs to your Android project or any Java project is:

1. Create a folder called libs in your project's root folder
2. Copy your JAR files to the libs folder

3. Now right click on the Jar file and then select Build Path > Add to Build Path, which will create a folder called 'Referenced Libraries' within your project

   By doing this, you will not lose your libraries that are being referenced on your hard drive whenever you transfer your project to another computer.

For Android Studio

1. If you are in Android View in project explorer, change it to Project view as below

2. Right click the desired module where you would like to add the external library, then select New > Directroy and name it as 'libs'
3. Now copy the blah_blah.jar into the 'libs' folder
4. Right click the blah_blah.jar, Then select 'Add as Library..'. This will automatically add and entry in build.gradle as compile files('libs/blah_blah.jar') and sync the gradle. And you are done

Please Note : If you are using 3rd party libraries then it is better to use transitive dependencies where Gradle script automatically downloads the JAR and the dependency JAR when gradle script run.

Ex : compile 'com.google.android.gms:play-services-ads:9.4.0'

Read more about Gradle Dependency Mangement

I need to detect rotation while using the camera with AVFoundation, and found that the didRotate (now deprecated) & willTransition methods were unreliable for my needs. Using the notification posted by David did work, but is not current for Swift 3.x & above.

The following makes use of a closure, which appears to be Apple's preference going forward.

var didRotate: (Notification) -> Void = { notification in
        switch UIDevice.current.orientation {
        case .landscapeLeft, .landscapeRight:
            print("landscape")
        case .portrait, .portraitUpsideDown:
            print("Portrait")
        default:
            print("other (such as face up & down)")
        }
    }

To set up the notification:

NotificationCenter.default.addObserver(forName: UIDevice.orientationDidChangeNotification,
                                       object: nil,
                                       queue: .main,
                                       using: didRotate)

To tear down the notification:

NotificationCenter.default.removeObserver(self,
                                          name: UIDevice.orientationDidChangeNotification,
                                          object: nil)

Regarding the deprecation statement, my initial comment was misleading, so I wanted to update that. As noted, the usage of @objc inference has been deprecated, which in turn was needed to use a #selector. By using a closure instead, this can be avoided and you now have a solution that should avoid a crash due to calling an invalid selector.

iPhone 6

• Landscape

  @media only screen 
      and (min-device-width : 375px) // or 213.4375em or 3in or 9cm
      and (max-device-width : 667px) // or 41.6875em
      and (width : 667px) // or 41.6875em
      and (height : 375px) // or 23.4375em
      and (orientation : landscape) 
      and (color : 8)
      and (device-aspect-ratio : 375/667)
      and (aspect-ratio : 667/375)
      and (device-pixel-ratio : 2)
      and (-webkit-min-device-pixel-ratio : 2)
  { }
  

• Portrait

  @media only screen 
      and (min-device-width : 375px) // or 213.4375em
      and (max-device-width : 667px) // or 41.6875em
      and (width : 375px) // or 23.4375em
      and (height : 559px) // or 34.9375em
      and (orientation : portrait) 
      and (color : 8)
      and (device-aspect-ratio : 375/667)
      and (aspect-ratio : 375/559)
      and (device-pixel-ratio : 2)
      and (-webkit-min-device-pixel-ratio : 2)
  { }
  

  if you prefer you can use (device-width : 375px) and (device-height: 559px) in place of the min- and max- settings.

  It is not necessary to use all of these settings, and these are not all the possible settings. These are just the majority of possible options so you can pick and choose whichever ones meet your needs.

• User Agent

  tested with my iPhone 6 (model MG6G2LL/A) with iOS 9.0 (13A4305g)

  # Safari
  Mozilla/5.0 (iPhone; CPU iPhone OS 9_0 like Mac OS X) AppleWebKit/601.1.39 (KHTML, like Gecko) Version/9.0 Mobile/13A4305g Safari 601.1
  # Google Chrome
  Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_3) AppleWebKit/534.53.11 (KHTML, like Gecko) Version/5.1.3 Safari/534.53.10 (000102)
  # Mercury
  Mozilla/5.0 (iPhone; CPU iPhone OS 7_0_4 like Mac OS X) AppleWebKit/537.51.1 (KHTML, like Gecko) Version/7.0 Mobile/11B554a Safari/9537.53
  

• Launch images

  • 750 x 1334 (@2x) for portrait
  • 1334 x 750 (@2x) for landscape

• App icon

  • 120 x 120

iPhone 6+

• Landscape

  @media only screen 
      and (min-device-width : 414px) 
      and (max-device-width : 736px) 
      and (orientation : landscape) 
      and (-webkit-min-device-pixel-ratio : 3) 
  { }
  

• Portrait

  @media only screen 
      and (min-device-width : 414px) 
      and (max-device-width : 736px)
      and (device-width : 414px)
      and (device-height : 736px)
      and (orientation : portrait) 
      and (-webkit-min-device-pixel-ratio : 3) 
      and (-webkit-device-pixel-ratio : 3)
  { }
  

• Launch images

  • 1242 x 2208 (@3x) for portrait
  • 2208 x 1242 (@3x) for landscape

• App icon

  • 180 x 180

iPhone 6 and 6+

@media only screen 
    and (max-device-width: 640px), 
    only screen and (max-device-width: 667px), 
    only screen and (max-width: 480px)
{ }

Predicted

According to the Apple website the iPhone 6 Plus will have 401 pixels-per-inch and be 1920 x 1080. The smaller version of the iPhone 6 will be 1334 x 750 with 326 PPI.

So, assuming that information is correct, we can write a media query for the iPhone 6:

@media screen 
    and (min-device-width : 1080px) 
    and (max-device-width : 1920px) 
    and (min-resolution: 401dpi) 
    and (device-aspect-ratio:16/9) 
{ }

@media screen 
    and (min-device-width : 750px) 
    and (max-device-width : 1334px) 
    and (min-resolution: 326dpi) 
{ }

Note that device-aspect-ratio will be deprecated in http://dev.w3.org/csswg/mediaqueries-4/ and replaced with aspect-ratio

Min-width and max-width may be something like 1704 x 960.

Apple Watch (speculative)

Specs on the Watch are still a bit speculative since (as far as I'm aware) there has been no official spec sheet yet. But Apple did mention in this press release that the Watch will be available in two sizes.. 38mm and 42mm.

Further assuming.. that those sizes refer to the screen size rather than the overall size of the Watch face these media queries should work.. And I'm sure you could give or take a few millimeters to cover either scenario without sacrificing any unwanted targeting because..

@media (!small) and (damn-small), (omfg) { }

or

@media 
    (max-device-width:42mm) 
    and (min-device-width:38mm) 
{ }

It's worth noting that Media Queries Level 4 from W3C currently only available as a first public draft, once available for use will bring with it a lot of new features designed with smaller wearable devices like this in mind.

To make it a bit more user-friendly: After you've unpacked it, go into the directory, and run bin/pycharm.sh. Once it opens, it either offers you to create a desktop entry, or if it doesn't, you can ask it to do so by going to the Tools menu and selecting Create Desktop Entry...

Then close PyCharm, and in the future you can just click on the created menu entry. (or copy it onto your Desktop)

To answer the specifics between Run and Run in Terminal: It's essentially the same, but "Run in Terminal" actually opens a terminal window first and shows you console output of the program. Chances are you don't want that :)

(Unless you are trying to debug an application, you usually do not need to see the output of it.)

For the record to go back and forth in basic python3:

a = 10
bin(a)
# '0b1010'

int(bin(a), 2)
# 10
eval(bin(a))
# 10

Maybe you mean this:

public class Reader {

public static void main(String[]args) throws IOException{

    FileReader in = new FileReader("C:/test.txt");
    BufferedReader br = new BufferedReader(in);
    String line = br.readLine();
    while (line!=null) {
        System.out.println(line);
        line = br.readLine();
    }
    in.close();

}

jQuery('.validatedForm').validate({
        rules : {
            password : {
                minlength : 5
            },
            password_confirm : {
                minlength : 5,
                equalTo : '[name="password"]'
            }
        }

In general, you will not use id="password" like this. So, you can use [name="password"] instead of "#password"

A short code version...

 if (!strUrl.startsWith("http://") && !strUrl.startsWith("https://")){
     strUrl= "http://" + strUrl;
 }


 startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse(strUrl)));

Your formula should be of the form =IF(X2 >= 85,0.559,IF(X2 >= 80,0.327,IF(X2 >=75,0.255,0))). This simulates the ELSE-IF operand Excel lacks. Your formulas were using two conditions in each, but the second parameter of the IF formula is the value to use if the condition evaluates to true. You can't chain conditions in that manner.

For using a proxy with https I tried the advice on this website (using dependency https-proxy-agent) and it worked for me:

http://codingmiles.com/node-js-making-https-request-via-proxy/

you can use window.setInterval and time must to be define in miliseconds, in below case the function will call after every single second (1000 miliseconds)

<script>
  var time = 3670;
window.setInterval(function(){

  // Time calculations for days, hours, minutes and seconds
    var h = Math.floor(time / 3600);
    var m = Math.floor(time % 3600 / 60);
    var s = Math.floor(time % 3600 % 60);

  // Display the result in the element with id="demo"
  document.getElementById("demo").innerHTML =  h + "h "
  + m + "m " + s + "s ";

  // If the count down is finished, write some text 
  if (time < 0) {
    clearInterval(x);
    document.getElementById("demo").innerHTML = "EXPIRED";
  }

  time--;
}, 1000);


</script>

Bootstrap 4.1 provides a class named disabled and aria-disabled="true" attribute.

example"

<a href="#" 
        class="btn btn-primary btn-lg disabled" 
        tabindex="-1" 
        role="button" aria-disabled="true"
>
    Primary link
</a>

More is on getbootstrap.com

So if you want to make it dynamically, and you don't want to care if it is button or ancor than in JS script you need something like that

   let $btn=$('.myClass');
   $btn.attr('disabled', true);
   if ($btn[0].tagName == 'A'){
        $btn.off();
        $btn.addClass('disabled');
        $btn.attr('aria-disabled', true);
   }

But be carefull

The solution only works on links with classes btn btn-link.

Sometimes bootstrap recommends using card-link class, in this case solution will not work.

I also see that the page loading (performance) takes a long time on using h:commandLink than h:link. h:link is faster compared to h:commandLink

Below works fine.

//a[@id='oldcontent']

If you've tried certain ones and they haven't worked, then let us know, otherwise something simple like this should work.

Try this

<mat-form-field>
    <mat-select [(ngModel)]="modeselect" [placeholder]="modeselect">
        <mat-option value="domain">Domain</mat-option>
        <mat-option value="exact">Exact</mat-option>
    </mat-select>
</mat-form-field>

Component:

export class SelectValueBindingExample {
    public modeselect = 'Domain';
}

Live demo

Also, don't forget to import FormsModule in your app.module

I've also faced the problem of ordering of loaded scripts, which was solved through sequential loading of scripts. The loading is based on Rob W's answer.

function scriptFromFile(file) {
    var script = document.createElement("script");
    script.src = chrome.extension.getURL(file);
    return script;
}

function scriptFromSource(source) {
    var script = document.createElement("script");
    script.textContent = source;
    return script;
}

function inject(scripts) {
    if (scripts.length === 0)
        return;
    var otherScripts = scripts.slice(1);
    var script = scripts[0];
    var onload = function() {
        script.parentNode.removeChild(script);
        inject(otherScripts);
    };
    if (script.src != "") {
        script.onload = onload;
        document.head.appendChild(script);
    } else {
        document.head.appendChild(script);
        onload();
    }
}

The example of usage would be:

var formulaImageUrl = chrome.extension.getURL("formula.png");
var codeImageUrl = chrome.extension.getURL("code.png");

inject([
    scriptFromSource("var formulaImageUrl = '" + formulaImageUrl + "';"),
    scriptFromSource("var codeImageUrl = '" + codeImageUrl + "';"),
    scriptFromFile("EqEditor/eq_editor-lite-17.js"),
    scriptFromFile("EqEditor/eq_config.js"),
    scriptFromFile("highlight/highlight.pack.js"),
    scriptFromFile("injected.js")
]);

Actually, I'm kinda new to JS, so feel free to ping me to the better ways.

With WinForms you can use the ErrorProvider in conjunction with the Validating event to handle the validation of user input. The Validating event provides the hook to perform the validation and ErrorProvider gives a nice consistent approach to providing the user with feedback on any error conditions.

http://msdn.microsoft.com/en-us/library/system.windows.forms.errorprovider.aspx

In macOS for those who are using the express version 4.x.x and using the DOTENV plugin, need to use like this:

1. After installing the plugin import like the following in the file where you init the application: require('dotenv').config({path: path.resolve(__dirname+'/.env')});

2. In the root directory create a file '.env' and add the varaiable like:

   NODE_ENV=development or NODE_ENV = development

The only proper way to put server side data into generated javascript code:

<?php $jsString= 'testing'; ?>
<html>
  <body>
    <script type="text/javascript">      
      var jsStringFromPhp=<?php echo json_encode($jsString); ?>;
      alert(jsStringFromPhp);
    </script>
  </body>
</html>

With simple quotes the content of your variable is not escaped against HTML and javascript, so it is vulnerable by XSS attacks...

For similar reasons I recommend to use document.createTextNode() instead of setting the innerHTML. Ofc. it is slower, but more secure...

You can use JsonResponse with values. Simple example:

from django.http import JsonResponse

def some_view(request):
    data = list(SomeModel.objects.values())  # wrap in list(), because QuerySet is not JSON serializable
    return JsonResponse(data, safe=False)  # or JsonResponse({'data': data})

Or another approach with Django's built-in serializers:

from django.core import serializers
from django.http import HttpResponse

def some_view(request):
    qs = SomeModel.objects.all()
    qs_json = serializers.serialize('json', qs)
    return HttpResponse(qs_json, content_type='application/json')

In this case result is slightly different (without indent by default):

[
    {
        "model": "some_app.some_model",
        "pk": 1,
        "fields": {
            "name": "Elon",
            "age": 48,
            ...
        }
    },
    ...
]

I have to say, it is good practice to use something like marshmallow to serialize queryset.

...and a few notes for better performance:

• use pagination if your queryset is big;
• use objects.values() to specify list of required fields to avoid serialization and sending to client unnecessary model's fields (you also can pass fields to serializers.serialize);

I'm using rather specified charset (ISO-8859-2) because not every mail system (for example: http://10minutemail.com) can read UTF-8 mails. If you need this:

function utf8_to_latin2($str)
{
    return iconv ( 'utf-8', 'ISO-8859-2' , $str );
}
function my_mail($to,$s,$text,$form, $reply)
    {
        mail($to,utf8_to_latin2($s),utf8_to_latin2($text),
        "From: $form\r\n".
        "Reply-To: $reply\r\n".
        "X-Mailer: PHP/" . phpversion());
    }

I have made another mailer function, because apple device could not read well the previous version.

function utf8mail($to,$s,$body,$from_name="x",$from_a = "[email protected]", $reply="[email protected]")
{
    $s= "=?utf-8?b?".base64_encode($s)."?=";
    $headers = "MIME-Version: 1.0\r\n";
    $headers.= "From: =?utf-8?b?".base64_encode($from_name)."?= <".$from_a.">\r\n";
    $headers.= "Content-Type: text/plain;charset=utf-8\r\n";
    $headers.= "Reply-To: $reply\r\n";  
    $headers.= "X-Mailer: PHP/" . phpversion();
    mail($to, $s, $body, $headers);
}

If you actually have set a root password and you've just lost/forgotten it:

1. Stop MySQL

2. Restart it manually with the skip-grant-tables option: mysqld_safe --skip-grant-tables

3. Now, open a new terminal window and run the MySQL client: mysql -u root

4. Reset the root password manually with this MySQL command: UPDATE mysql.user SET Password=PASSWORD('password') WHERE User='root'; If you are using MySQL 5.7 (check using mysql --version in the Terminal) then the command is:

   UPDATE mysql.user SET authentication_string=PASSWORD('password')  WHERE  User='root';
   

5. Flush the privileges with this MySQL command: FLUSH PRIVILEGES;

From http://www.tech-faq.com/reset-mysql-password.shtml

(Maybe this isn't what you need, Abs, but I figure it could be useful for people stumbling across this question in the future)

I am sorry that your concluding question is not that clear but you are wrong from the very first line. The variable data is an Object not an Array

To access the attributes of an object is pretty easy:

alert(data.second);

But, if this does not completely answer your question, please clarify it and post back.

Thanks !

Those script tags are a common way to implement templating functionality (like in PHP) but on the client side.

By setting the type to "text/template", it's not a script that the browser can understand, and so the browser will simply ignore it. This allows you to put anything in there, which can then be extracted later and used by a templating library to generate HTML snippets.

Backbone doesn't force you to use any particular templating library - there are quite a few out there: Mustache, Haml, Eco,Google Closure template, and so on (the one used in the example you linked to is underscore.js). These will use their own syntax for you to write within those script tags.

<label for="my_checkbox">Check me</label>
<input type="checkbox" name="my_checkbox" value="Car" />

class A{
  public void methodA(){
    new B().methodB();
    //or
    B.methodB1();
  }
}

class B{
  //instance method
  public void methodB(){
  }
  //static method
  public static  void methodB1(){
  }
}