Programs & Examples On #Convex

REPEAT
    ...
UNTIL cond

Is equivalent to

while True:
    ...
    if cond:
        break

I have 10.8 installed and Xcode 4.4 with Command Line tools, and yet I was still getting this error. Rather than reinstall Xcode, I noticed there were two relevant lines in my config.log:

configure:5130: checking for C compiler version
configure:5139: /Applications/Xcode.app/Contents/Developer/Toolchains/OSX10.8.xctoolchain/usr/bin/cc --version >&5

That path did not exist for me. Instead I had:

/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain

The C compiler ("cc") is located inside of that xctoolchain directory. I created a symlink for OSX10.8.xctoolchain to point to XcodeDefault.xctoolchain and that fixed it. Now the memcached installation script can find the compiler version and continue on its way.

cd /Applications/Xcode.app/Contents/Developer/Toolchains
sudo ln -s XcodeDefault.xctoolchain OSX10.8.xctoolchain

As suggested in the comments, if you are having this problem on Yosemite (10.10) or Mavericks (10.9), you can update the symlink command above to point to that specific version (OSX10.9.xctoolchain or OSX10.10.xctoolchain).

Detecting sheet of paper is kinda old school. If you want to tackle skew detection then it is better if you straightaway aim for text line detection. With this you will get the extremas left, right, top and bottom. Discard any graphics in the image if you dont want and then do some statistics on the text line segments to find the most occurring angle range or rather angle. This is how you will narrow down to a good skew angle. Now after this you put these parameters the skew angle and the extremas to deskew and chop the image to what is required.

As for the current image requirement, it is better if you try CV_RETR_EXTERNAL instead of CV_RETR_LIST.

Another method of detecting edges is to train a random forests classifier on the paper edges and then use the classifier to get the edge Map. This is by far a robust method but requires training and time.

Random forests will work with low contrast difference scenarios for example white paper on roughly white background.

Also remember one thing. Very important
You have to specify the command something like this to be more precise
grep -l "pattern" *

Here's my code that works:

using System;
using System.ComponentModel;
using System.Diagnostics;
using System.Runtime.InteropServices;

namespace SnagFree.TrayApp.Core
{
    class GlobalKeyboardHookEventArgs : HandledEventArgs
    {
        public GlobalKeyboardHook.KeyboardState KeyboardState { get; private set; }
        public GlobalKeyboardHook.LowLevelKeyboardInputEvent KeyboardData { get; private set; }

        public GlobalKeyboardHookEventArgs(
            GlobalKeyboardHook.LowLevelKeyboardInputEvent keyboardData,
            GlobalKeyboardHook.KeyboardState keyboardState)
        {
            KeyboardData = keyboardData;
            KeyboardState = keyboardState;
        }
    }

    //Based on https://gist.github.com/Stasonix
    class GlobalKeyboardHook : IDisposable
    {
        public event EventHandler<GlobalKeyboardHookEventArgs> KeyboardPressed;

        public GlobalKeyboardHook()
        {
            _windowsHookHandle = IntPtr.Zero;
            _user32LibraryHandle = IntPtr.Zero;
            _hookProc = LowLevelKeyboardProc; // we must keep alive _hookProc, because GC is not aware about SetWindowsHookEx behaviour.

            _user32LibraryHandle = LoadLibrary("User32");
            if (_user32LibraryHandle == IntPtr.Zero)
            {
                int errorCode = Marshal.GetLastWin32Error();
                throw new Win32Exception(errorCode, $"Failed to load library 'User32.dll'. Error {errorCode}: {new Win32Exception(Marshal.GetLastWin32Error()).Message}.");
            }



            _windowsHookHandle = SetWindowsHookEx(WH_KEYBOARD_LL, _hookProc, _user32LibraryHandle, 0);
            if (_windowsHookHandle == IntPtr.Zero)
            {
                int errorCode = Marshal.GetLastWin32Error();
                throw new Win32Exception(errorCode, $"Failed to adjust keyboard hooks for '{Process.GetCurrentProcess().ProcessName}'. Error {errorCode}: {new Win32Exception(Marshal.GetLastWin32Error()).Message}.");
            }
        }

        protected virtual void Dispose(bool disposing)
        {
            if (disposing)
            {
                // because we can unhook only in the same thread, not in garbage collector thread
                if (_windowsHookHandle != IntPtr.Zero)
                {
                    if (!UnhookWindowsHookEx(_windowsHookHandle))
                    {
                        int errorCode = Marshal.GetLastWin32Error();
                        throw new Win32Exception(errorCode, $"Failed to remove keyboard hooks for '{Process.GetCurrentProcess().ProcessName}'. Error {errorCode}: {new Win32Exception(Marshal.GetLastWin32Error()).Message}.");
                    }
                    _windowsHookHandle = IntPtr.Zero;

                    // ReSharper disable once DelegateSubtraction
                    _hookProc -= LowLevelKeyboardProc;
                }
            }

            if (_user32LibraryHandle != IntPtr.Zero)
            {
                if (!FreeLibrary(_user32LibraryHandle)) // reduces reference to library by 1.
                {
                    int errorCode = Marshal.GetLastWin32Error();
                    throw new Win32Exception(errorCode, $"Failed to unload library 'User32.dll'. Error {errorCode}: {new Win32Exception(Marshal.GetLastWin32Error()).Message}.");
                }
                _user32LibraryHandle = IntPtr.Zero;
            }
        }

        ~GlobalKeyboardHook()
        {
            Dispose(false);
        }

        public void Dispose()
        {
            Dispose(true);
            GC.SuppressFinalize(this);
        }

        private IntPtr _windowsHookHandle;
        private IntPtr _user32LibraryHandle;
        private HookProc _hookProc;

        delegate IntPtr HookProc(int nCode, IntPtr wParam, IntPtr lParam);

        [DllImport("kernel32.dll")]
        private static extern IntPtr LoadLibrary(string lpFileName);

        [DllImport("kernel32.dll", CharSet = CharSet.Auto)]
        private static extern bool FreeLibrary(IntPtr hModule);

        /// <summary>
        /// The SetWindowsHookEx function installs an application-defined hook procedure into a hook chain.
        /// You would install a hook procedure to monitor the system for certain types of events. These events are
        /// associated either with a specific thread or with all threads in the same desktop as the calling thread.
        /// </summary>
        /// <param name="idHook">hook type</param>
        /// <param name="lpfn">hook procedure</param>
        /// <param name="hMod">handle to application instance</param>
        /// <param name="dwThreadId">thread identifier</param>
        /// <returns>If the function succeeds, the return value is the handle to the hook procedure.</returns>
        [DllImport("USER32", SetLastError = true)]
        static extern IntPtr SetWindowsHookEx(int idHook, HookProc lpfn, IntPtr hMod, int dwThreadId);

        /// <summary>
        /// The UnhookWindowsHookEx function removes a hook procedure installed in a hook chain by the SetWindowsHookEx function.
        /// </summary>
        /// <param name="hhk">handle to hook procedure</param>
        /// <returns>If the function succeeds, the return value is true.</returns>
        [DllImport("USER32", SetLastError = true)]
        public static extern bool UnhookWindowsHookEx(IntPtr hHook);

        /// <summary>
        /// The CallNextHookEx function passes the hook information to the next hook procedure in the current hook chain.
        /// A hook procedure can call this function either before or after processing the hook information.
        /// </summary>
        /// <param name="hHook">handle to current hook</param>
        /// <param name="code">hook code passed to hook procedure</param>
        /// <param name="wParam">value passed to hook procedure</param>
        /// <param name="lParam">value passed to hook procedure</param>
        /// <returns>If the function succeeds, the return value is true.</returns>
        [DllImport("USER32", SetLastError = true)]
        static extern IntPtr CallNextHookEx(IntPtr hHook, int code, IntPtr wParam, IntPtr lParam);

        [StructLayout(LayoutKind.Sequential)]
        public struct LowLevelKeyboardInputEvent
        {
            /// <summary>
            /// A virtual-key code. The code must be a value in the range 1 to 254.
            /// </summary>
            public int VirtualCode;

            /// <summary>
            /// A hardware scan code for the key. 
            /// </summary>
            public int HardwareScanCode;

            /// <summary>
            /// The extended-key flag, event-injected Flags, context code, and transition-state flag. This member is specified as follows. An application can use the following values to test the keystroke Flags. Testing LLKHF_INJECTED (bit 4) will tell you whether the event was injected. If it was, then testing LLKHF_LOWER_IL_INJECTED (bit 1) will tell you whether or not the event was injected from a process running at lower integrity level.
            /// </summary>
            public int Flags;

            /// <summary>
            /// The time stamp stamp for this message, equivalent to what GetMessageTime would return for this message.
            /// </summary>
            public int TimeStamp;

            /// <summary>
            /// Additional information associated with the message. 
            /// </summary>
            public IntPtr AdditionalInformation;
        }

        public const int WH_KEYBOARD_LL = 13;
        //const int HC_ACTION = 0;

        public enum KeyboardState
        {
            KeyDown = 0x0100,
            KeyUp = 0x0101,
            SysKeyDown = 0x0104,
            SysKeyUp = 0x0105
        }

        public const int VkSnapshot = 0x2c;
        //const int VkLwin = 0x5b;
        //const int VkRwin = 0x5c;
        //const int VkTab = 0x09;
        //const int VkEscape = 0x18;
        //const int VkControl = 0x11;
        const int KfAltdown = 0x2000;
        public const int LlkhfAltdown = (KfAltdown >> 8);

        public IntPtr LowLevelKeyboardProc(int nCode, IntPtr wParam, IntPtr lParam)
        {
            bool fEatKeyStroke = false;

            var wparamTyped = wParam.ToInt32();
            if (Enum.IsDefined(typeof(KeyboardState), wparamTyped))
            {
                object o = Marshal.PtrToStructure(lParam, typeof(LowLevelKeyboardInputEvent));
                LowLevelKeyboardInputEvent p = (LowLevelKeyboardInputEvent)o;

                var eventArguments = new GlobalKeyboardHookEventArgs(p, (KeyboardState)wparamTyped);

                EventHandler<GlobalKeyboardHookEventArgs> handler = KeyboardPressed;
                handler?.Invoke(this, eventArguments);

                fEatKeyStroke = eventArguments.Handled;
            }

            return fEatKeyStroke ? (IntPtr)1 : CallNextHookEx(IntPtr.Zero, nCode, wParam, lParam);
        }
    }
}

Usage:

using System;
using System.Windows.Forms;

namespace SnagFree.TrayApp.Core
{
    internal class Controller : IDisposable
    {
        private GlobalKeyboardHook _globalKeyboardHook;

        public void SetupKeyboardHooks()
        {
            _globalKeyboardHook = new GlobalKeyboardHook();
            _globalKeyboardHook.KeyboardPressed += OnKeyPressed;
        }

        private void OnKeyPressed(object sender, GlobalKeyboardHookEventArgs e)
        {
            //Debug.WriteLine(e.KeyboardData.VirtualCode);

            if (e.KeyboardData.VirtualCode != GlobalKeyboardHook.VkSnapshot)
                return;

            // seems, not needed in the life.
            //if (e.KeyboardState == GlobalKeyboardHook.KeyboardState.SysKeyDown &&
            //    e.KeyboardData.Flags == GlobalKeyboardHook.LlkhfAltdown)
            //{
            //    MessageBox.Show("Alt + Print Screen");
            //    e.Handled = true;
            //}
            //else

            if (e.KeyboardState == GlobalKeyboardHook.KeyboardState.KeyDown)
            {
                MessageBox.Show("Print Screen");
                e.Handled = true;
            }
        }

        public void Dispose()
        {
            _globalKeyboardHook?.Dispose();
        }
    }
}

Use the built in promisify library (Node 8+) to make these old callback functions more elegant.

const fs = require('fs');
const util = require('util');

const readFile = util.promisify(fs.readFile);

async function doStuff() {
  try {
    const content = await readFile(filePath, 'utf8');
    console.log(content);
  } catch (e) {
    console.error(e);
  }
}

First of all you can't make a POST request using JSONP.

What basically is happening is that dynamically a script tag is inserted to load your data. Therefore only GET requests are possible.

Furthermore your data has to be wrapped in a callback function which is called after the request is finished to load the data in a variable.

This whole process is automated by jQuery for you. Just using $.getJSON on an external domain doesn't always work though. I can tell out of personal experience.

The best thing to do is adding &callback=? to you url.

At the server side you've got to make sure that your data is wrapped in this callback function.

ie.

echo $_GET['callback'] . '(' . $data . ')';

EDIT:

Don't have enough rep yet to comment on Liam's answer so therefore the solution over here.

Replace Liam's line

 echo "{'fullname' : 'Jeff Hansen'}";

with

 echo $_GET['callback'] . '(' . "{'fullname' : 'Jeff Hansen'}" . ')';

are you using jquery and prototype on the same page by any chance?

If so, use jquery noConflict mode, otherwise you are overwriting prototypes $ function.

noConflict mode is activated by doing the following:

<script src="jquery.js"></script>
<script>jQuery.noConflict();</script>

Note: by doing this, the dollar sign variable no longer represents the jQuery object. To keep from rewriting all your jQuery code, you can use this little trick to create a dollar sign scope for jQuery:

jQuery(function ($) {
    // The dollar sign will equal jQuery in this scope
});

// Out here, the dollar sign still equals Prototype

Try to follow the advice you see on the screen, and first reset your master's HEAD to the commit it expects.

git update-ref refs/heads/master b918ac16a33881ce00799bea63d9c23bf7022d67

Then, abort the rebase again.

• OR is spelled should
• AND is spelled must
• NOR is spelled should_not

Example:

You want to see all the items that are (round AND (red OR blue)):

{
    "query": {
        "bool": {
            "must": [
                {
                    "term": {"shape": "round"}
                },
                {
                    "bool": {
                        "should": [
                            {"term": {"color": "red"}},
                            {"term": {"color": "blue"}}
                        ]
                    }
                }
            ]
        }
    }
}

You can also do more complex versions of OR, for example if you want to match at least 3 out of 5, you can specify 5 options under "should" and set a "minimum_should" of 3.

Thanks to Glen Thompson and Sebastialonso for finding where my nesting wasn't quite right before.

Thanks also to Fatmajk for pointing out that "term" becomes "match" in ElasticSearch 6.

Personally, I'd go for a solution like this, it's incredibly similar to the solution provided by @rzwitserloot, only subtle differences.

This solution is small, simple & clean, it requires very little in terms of dependencies, all of which are a part of the Java Util package.

Map<String, String> map = new HashMap<>();

map.put("param1", "12");
map.put("param2", "cat");

String output = "someUrl?";
output += map.entrySet()
    .stream()
    .map(x -> x.getKey() + "=" + x.getValue() + "&")
    .collect(Collectors.joining("&"));

System.out.println(output.substring(0, output.length() -1));

http://content.hccfl.edu/pollock/Unix/FindCmd.htm

The linux/unix "find" command.

You miss the from clause

SELECT *  from TCCAWZTXD.TCC_COIL_DEMODATA WHERE CURRENT_INSERTTIME  BETWEEN(CURRENT_TIMESTAMP)-5 minutes AND CURRENT_TIMESTAMP

Please try adding the double quotes git commit -m "initial commit". This will solve your problem.

is it possible to export without looping through all records

For a range in Excel with a large number of rows you may see some performance improvement if you create an Access.Application object in Excel and then use it to import the Excel data into Access. The code below is in a VBA module in the same Excel document that contains the following test data

Option Explicit

Sub AccImport()
    Dim acc As New Access.Application
    acc.OpenCurrentDatabase "C:\Users\Public\Database1.accdb"
    acc.DoCmd.TransferSpreadsheet _
            TransferType:=acImport, _
            SpreadSheetType:=acSpreadsheetTypeExcel12Xml, _
            TableName:="tblExcelImport", _
            Filename:=Application.ActiveWorkbook.FullName, _
            HasFieldNames:=True, _
            Range:="Folio_Data_original$A1:B10"
    acc.CloseCurrentDatabase
    acc.Quit
    Set acc = Nothing
End Sub

There are mainly two ways to use JDBC - using Windows authentication and SQL authentication. SQL authentication is probably the easiest. What you can do is something like:

String userName = "username";
String password = "password";

String url = "jdbc:sqlserver://MYPC\\SQLEXPRESS;databaseName=MYDB";

Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
Connection conn = DriverManager.getConnection(url, userName, password);

after adding sqljdbc4.jar to the build path.

For Window authentication you can do something like:

String url = "jdbc:sqlserver://MYPC\\SQLEXPRESS;databaseName=MYDB;integratedSecurity=true";
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
Connection conn = DriverManager.getConnection(url);

and then add the path to sqljdbc_auth.dll as a VM argument (still need sqljdbc4.jar in the build path).

Please take a look here for a short step-by-step guide showing how to connect to SQL Server from Java using jTDS and JDBC should you need more details. Hope it helps!

As Coli88 said, you should check the UINavigationBarDelegate protocol.

In a more general way, you can also use the - (void)viewWillDisapear:(BOOL)animated to perform custom work when the view retained by the currently visible view controller is about to disappear. Unfortunately, this would cover bother the push and the pop cases.

After coming up with some good thoughts on making generic types in python, I started looking for others who had the same idea, but I couldn't find any. So, here it is. I tried this out and it works well. It allows us to parameterize our types in python.

class List( type ):

    def __new__(type_ref, member_type):

        class List(list):

            def append(self, member):
                if not isinstance(member, member_type):
                    raise TypeError('Attempted to append a "{0}" to a "{1}" which only takes a "{2}"'.format(
                        type(member).__name__,
                        type(self).__name__,
                        member_type.__name__ 
                    ))

                    list.append(self, member)

        return List 

You can now derive types from this generic type.

class TestMember:
        pass

class TestList(List(TestMember)):

    def __init__(self):
        super().__init__()


test_list = TestList()
test_list.append(TestMember())
test_list.append('test') # This line will raise an exception

This solution is simplistic, and it does have it's limitations. Each time you create a generic type, it will create a new type. Thus, multiple classes inheriting List( str ) as a parent would be inheriting from two separate classes. To overcome this, you need to create a dict to store the various forms of the inner class and return the previous created inner class, rather than creating a new one. This would prevent duplicate types with the same parameters from being created. If interested, a more elegant solution can be made with decorators and/or metaclasses.

After 8 years the situation is changed a bit.

I'm unable to open a new session of Google Chrome without other parameters and allow 'file:' schema.

On macOS I do:

open -n -a "Google Chrome" --args \
    --disable-web-security \               # This disable all CORS and other security checks
    --user-data-dir=$HOME/fakeChromeDir    # This let you to force open a new Google Chrome session

Without this arguments I'm unable to test the XSL stylesheet in local.

To print keys on one line as csv:

echo '{"b":"2","a":"1"}' | jq -r 'keys | [ .[] | tostring ] | @csv'

Output:

"a","b"

For csv completeness ... to print values on one line as csv:

echo '{"b":"2","a":"1"}' | jq -rS . | jq -r '. | [ .[] | tostring ] | @csv'

Output:

"1","2"

One way of doing this is via an exists clause:

select * from genes g
where exists
(select null from genes g1
 where g.locus = g1.locus and g.chromosome = g1.chromosome and g.id <> g1.id)

Alternatively, in MySQL you can get a summary of all matching ids with a single table access, using group_concat:

select group_concat(id) matching_ids, chromosome, locus 
from genes
group by chromosome, locus
having count(*) > 1

A fragment lives inside an activity, while an activity lives by itself.

If you have a Collection of stdClass objects, you could try with this:

$data = $data->map(function ($item){
            return get_object_vars($item);
        });

If the width of the contents changes, you'll have to use this bit of code to update each column:

private void ResizeGridViewColumn(GridViewColumn column)
{
    if (double.IsNaN(column.Width))
    {
        column.Width = column.ActualWidth;
    }

    column.Width = double.NaN;
}

You'd have to fire it each time the data for that column updates.

Firebug seems to allow you to do that.

Sorry for resurrecting an old thread, but I was with the same problem today. The simplest way that I have found is the following:

# Expand right side of clipping rect to make room for the legend
par(xpd=T, mar=par()$mar+c(0,0,0,6))

# Plot graph normally
plot(1:3, rnorm(3), pch = 1, lty = 1, type = "o", ylim=c(-2,2))
lines(1:3, rnorm(3), pch = 2, lty = 2, type="o")

# Plot legend where you want
legend(3.2,1,c("group A", "group B"), pch = c(1,2), lty = c(1,2))

# Restore default clipping rect
par(mar=c(5, 4, 4, 2) + 0.1)

Found here: http://www.harding.edu/fmccown/R/

It seems that IDLE changes its current working dir to location of the script that is executed, while when running the script using cmd doesn't do that and it leaves CWD as it is.

To change current working dir to the one containing your script you can use:

import os
os.chdir(os.path.dirname(__file__))
print(os.getcwd())

The __file__ variable is available only if you execute script from file, and it contains path to the file. More on it here: Python __file__ attribute absolute or relative?

Put

android:duplicateParentState="true"

in child then the views get its drawable state (focused, pressed, etc.) from its direct parent rather than from itself. you can set onclick for parent and it call on child clicked

addItem(Object) takes an object. The default JComboBox renderer calls toString() on that object and that's what it shows as the label.

So, don't pass in a String to addItem(). Pass in an object whose toString() method returns the label you want. The object can contain any number of other data fields also.

Try passing this into your combobox and see how it renders. getSelectedItem() will return the object, which you can cast back to Widget to get the value from.

public final class Widget {
    private final int value;
    private final String label;

    public Widget(int value, String label) {
        this.value = value;
        this.label = label;
    }

    public int getValue() {
        return this.value;
    }

    public String toString() {
        return this.label;
    }
}

Using display: flex you can control the vertical alignment of HTML elements.

.box {_x000D_
  height: 100px;_x000D_
  display: flex;_x000D_
  align-items: center; /* Vertical */_x000D_
  justify-content: center; /* Horizontal */_x000D_
  border:2px solid black;_x000D_
}_x000D_
_x000D_
.box div {_x000D_
  width: 100px;_x000D_
  height: 20px;_x000D_
  border:1px solid;_x000D_
}

<div class="box">_x000D_
  <div>Hello</div>_x000D_
  <p>World</p>_x000D_
</div>

It is a unary "+" operator which yields a numeric expression. It would be the same as d*1, I believe.

To go end of the file: press ESC

1) type capital G (Capital G)

2) press shift + g (small g)

To go top of the file there are the following ways: press ESC

1) press 1G (Capital G)

2) press gg (small g) or 1gg

3) You can jump to the particular line number,e.g wanted to go 1 line number, press 1 + G

Here is another solution using Jquery I find it a little easier and neater than inline JS sometimes.

    <html>
    <head>
    <script src="//ajax.googleapis.com/ajax/libs/jquery/1.10.1/jquery.min.js"></script>
    <script>

        /* if you prefer to functionize and use onclick= rather then the .on bind
        function hide_show(){
            $(this).hide();
            $("#hidden-div").show();
        }
        */

        $(function(){
            $("#chkbtn").on('click',function() {
                $(this).hide();
                $("#hidden-div").show();
            }); 
        });
    </script>
    <style>
    .hidden-div {
        display:none
    }
    </style>
    </head>
    <body>
    <div class="reform">
        <form id="reform" action="action.php" method="post" enctype="multipart/form-data">
        <input type="hidden" name="type" value="" />
            <fieldset>
                content here...
            </fieldset>

                <div class="hidden-div" id="hidden-div">

            <fieldset>
                more content here that is hidden until the button below is clicked...
            </fieldset>
        </form>
                </div>
                <span style="display:block; padding-left:640px; margin-top:10px;"><button id="chkbtn">Check Availability</button></span>
    </div>
    </body>
    </html>

If you are using PHP's password_hash() with the PASSWORD_DEFAULT algorithm to generate the bcrypt hash (which I would assume is a large percentage of people reading this question) be sure to keep in mind that in the future password_hash() might use a different algorithm as the default and this could therefore affect the length of the hash (but it may not necessarily be longer).

From the manual page:

Note that this constant is designed to change over time as new and stronger algorithms are added to PHP. For that reason, the length of the result from using this identifier can change over time. Therefore, it is recommended to store the result in a database column that can expand beyond 60 characters (255 characters would be a good choice).

Using bcrypt, even if you have 1 billion users (i.e. you're currently competing with facebook) to store 255 byte password hashes it would only ~255 GB of data - about the size of a smallish SSD hard drive. It is extremely unlikely that storing the password hash is going to be the bottleneck in your application. However in the off chance that storage space really is an issue for some reason, you can use PASSWORD_BCRYPT to force password_hash() to use bcrypt, even if that's not the default. Just be sure to stay informed about any vulnerabilities found in bcrypt and review the release notes every time a new PHP version is released. If the default algorithm is ever changed it would be good to review why and make an informed decision whether to use the new algorithm or not.

1. gitk --all
2. Select the first commit
3. Right click on the other, then diff selected → this

It is to mark the parameter as optional.

• TypeScript handbook https://www.typescriptlang.org/docs/handbook/functions.html#optional-and-default-parameters
• TypeScript Deep Dive https://basarat.gitbook.io/typescript/type-system/functions#optional-parameters

Technically, that is correct -- only 'eval' doesn't fork another shell. However, from the point of view of the application you're trying to run in the modified environment, the difference is nil: the child inherits the environment of its parent, so the (modified) environment is conveyed to all descending processes.

Ipso facto, the changed environment variable 'sticks' -- as long as you are running under the parent program/shell.

If it is absolutely necessary for the environment variable to remain after the parent (Perl or shell) has exited, it is necessary for the parent shell to do the heavy lifting. One method I've seen in the documentation is for the current script to spawn an executable file with the necessary 'export' language, and then trick the parent shell into executing it -- always being cognizant of the fact that you need to preface the command with 'source' if you're trying to leave a non-volatile version of the modified environment behind. A Kluge at best.

The second method is to modify the script that initiates the shell environment (.bashrc or whatever) to contain the modified parameter. This can be dangerous -- if you hose up the initialization script it may make your shell unavailable the next time it tries to launch. There are plenty of tools for modifying the current shell; by affixing the necessary tweaks to the 'launcher' you effectively push those changes forward as well. Generally not a good idea; if you only need the environment changes for a particular application suite, you'll have to go back and return the shell launch script to its pristine state (using vi or whatever) afterwards.

In short, there are no good (and easy) methods. Presumably this was made difficult to ensure the security of the system was not irrevocably compromised.

Refresh document every 300 seconds using HTML Meta tag add this inside the head tag of the page

 <meta http-equiv="refresh" content="300">

Using Script:

            setInterval(function() {
                  window.location.reload();
                }, 300000); 

I had a similar issue WhiteLabel Error message on my Angular SPA whenever I did a refresh.

The fix was to create a controller that implements ErrorController but instead of returning a String, I had to return a ModelAndView object that forwards to /

@CrossOrigin
@RestController
public class IndexController implements ErrorController {
    
    private static final String PATH = "/error";
    
    @RequestMapping(value = PATH)
    public ModelAndView saveLeadQuery() {           
        return new ModelAndView("forward:/");
    }

    @Override
    public String getErrorPath() {
        return PATH;
    }
}

namespace TestCSharp2
{
    **public** class Class2
    {
        int i;
        public void setValue(int i)
        {
            this.i = i;
        }
        public int getValue()
        {
        return this.i;
        }
    }
}

Add the 'Public' declaration before 'class Class2'.

This can be done in a single line, as long as the worksheet is active:

ActiveSheet.Visible = xlSheetHidden

However, you may not want to do this, especially if you use any "select" operations or you use any more ActiveSheet operations.

There are a lot of good answers to this question already but another way to take a look at it is the cloud (ala Amazon's AWS) is good for interactive use cases and the grid (ala High Performance Computing) is good for batch use cases.

Cloud is interactive in that you can get resources on demand via self service. The code you run on VMs in the cloud, such as the Apache web server, can server clients interactively.

Grid is batch in that you submit jobs to a job queue after obtaining the credentials from some HPC authority to do so. The code you run on the grid waits in that queue until there are sufficient resources to execute it.

There are good use cases for both styles of computing.

Swift is not a requirement, everything works fine with Objective-C. UIWebView will continue to be supported, so there is no rush to migrate if you want to take your time. However, it will not get the javascript and scrolling performance enhancements of WKWebView.

For backwards compatibility, I have two properties for my view controller: a UIWebView and a WKWebView. I use the WKWebview only if the class exists:

if ([WKWebView class]) {
    // do new webview stuff
} else {
    // do old webview stuff
}

Whereas I used to have a UIWebViewDelegate, I also made it a WKNavigationDelegate and created the necessary methods.

I have written a node module that provides a wrapper around setInterval using moment durations providing a declarative interface:

npm install every-moment

var every = require('every-moment');

var timer = every(5, 'seconds', function() {
    console.log(this.duration);
});

every(2, 'weeks', function() {
    console.log(this.duration);
    timer.stop();
    this.set(1, 'week');
    this.start();
});

https://www.npmjs.com/package/every-moment

https://github.com/raygerrard/every-moment

Here's my understanding (non-authoritative):

ODBC is a technology-agnostic open standard supported by most software vendors. OLEDB is a technology-specific Microsoft's API from the COM-era (COM was a component and interoperability technology before .NET)

At some point various datasouce vendors (e.g. Oracle etc.), willing to be compatible with Microsoft data consumers, developed OLEDB providers for their products, but for the most part OLEDB remains a Microsoft-only standard. Now, most Microsoft data sources allow both ODBC and OLEDB access, mainly for compatibility with legacy ODBC data consumers. Also, there exists OLEDB provider (wrapper) for ODBC which allows one to use OLEDB to access ODBC data sources if one so wishes.

In terms of the features OLEDB is substantially richer than ODBC but suffers from one-ring-to-rule-them-all syndrome (overly generic, overcomplicated, non-opinionated).

In non-Microsoft world ODBC-based data providers and clients are widely used and not going anywhere.

Inside Microsoft bubble OLEDB is being phased out in favor of native .NET APIs build on top of whatever the native transport layer for that data source is (e.g. TDS for MS SQL Server).

Take a look at LemmaGen - open source library written in C# 3.0.

Results for your test words (http://lemmatise.ijs.si/Services)

• cats -> cat
• running
• ran -> run
• cactus
• cactuses -> cactus
• cacti -> cactus
• community
• communities -> community

For whom it might concern - I tweaked around with Andreas code in order to get all errors code in a flat object for easier logging errors that might appear.

Please consider:

export function collectErrors(control: AbstractControl): any | null {
  let errors = {};
  let recursiveFunc = (control: AbstractControl) => {
    if (isFormGroup(control)) {
      return Object.entries(control.controls).reduce(
        (acc, [key, childControl]) => {
          const childErrors = recursiveFunc(childControl);
          if (childErrors) {
            if (!isFormGroup(childControl)) {
              errors = { ...errors, [key]: childErrors };
            }
            acc = { ...acc, [key]: childErrors };
          }
          return acc;
        },
        null
      );
    } else {
      return control.errors;
    }
  };
  recursiveFunc(control);
  return errors;
}

On my VS install (VS 2008) #if RELEASE does not work. However you could just use #if !DEBUG

Example:

#if !DEBUG
SendTediousEmail()
#endif

perl -d your_script.pl args

is how you debug Perl. It launches you into an interactive gdb-style command line debugger.

Sure you just need to setup a local web server. Check out XAMPP: http://www.apachefriends.org/en/xampp.html

That will get you up and running in about 10 minutes.

There is now a way to run php locally without installing a server: https://stackoverflow.com/a/21872484/672229

Yes but the files need to be processed. For example you can install test servers like mamp / lamp / wamp depending on your plateform.

Basically you need apache / php running.

#include<iostream>
int main()
{//initialize variables
    int limit;
    int num;
    int sum=0;
    int counter=0;

    cout<<"Enter limit of numbers you wish to see"<<" ";
    cin>>limit;
    cout<<endl;

while(counter<limit)
{

   cout<<"Enter number "<<endl;
  cin>>num;

  sum=sum+num;
  counter++;
}
cout<<"The sum of numbers is "<<" "<<endl

return 0;
}

I had some trouble with nested classes from any depth so I figured this out. It will select only the first level it encounters of a containing Jquery Object:

var $elementsAll = $("#container").find(".fooClass");4_x000D_
_x000D_
var $levelOneElements = $elementsAll.not($elementsAll.children().find($elementsAll));_x000D_
_x000D_
$levelOneElements.css({"color":"red"})

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>_x000D_
<div class="fooClass" style="color:black">_x000D_
Container_x000D_
  <div id="container">_x000D_
    <div class="fooClass" style="color:black">_x000D_
      Level One_x000D_
      <div>_x000D_
        <div class="fooClass" style="color:black">_x000D_
             Level Two_x000D_
        </div>_x000D_
      </div>_x000D_
    </div>_x000D_
    <div class="fooClass" style="color:black">_x000D_
      Level One_x000D_
      <div>_x000D_
        <div class="fooClass" style="color:black">_x000D_
             Level Two_x000D_
        </div>_x000D_
      </div>_x000D_
    </div>_x000D_
  </div>_x000D_
</div>

Quick and dirty:

#!/usr/bin/perl -w

use strict;

open(FILE, "</tmp/yourfile.txt") || die "File not found";
my @lines = <FILE>;
close(FILE);

foreach(@lines) {
   $_ =~ s/<PREF>/ABCD/g;
}

open(FILE, ">/tmp/yourfile.txt") || die "File not found";
print FILE @lines;
close(FILE);

Perhaps it i a good idea not to write the result back to your original file; instead write it to a copy and check the result first.

I used interop to open Excel and to modify the column widths once the data was done. If you use interop to spit the data into a new Excel workbook (if this is what you want), it will be terribly slow. Instead, I generated a .CSV, then opened the .CSV in Excel. This has its own problems, but I've found this the quickest method.

First, convert the .CSV:

// Convert array data into CSV format.
// Modified from http://csharphelper.com/blog/2018/04/write-a-csv-file-from-an-array-in-c/.
private string GetCSV(List<string> Headers, List<List<double>> Data)
{
    // Get the bounds.
    var rows = Data[0].Count;
    var cols = Data.Count;
    var row = 0;

    // Convert the array into a CSV string.
    StringBuilder sb = new StringBuilder();

    // Add the first field in this row.
    sb.Append(Headers[0]);

    // Add the other fields in this row separated by commas.
    for (int col = 1; col < cols; col++)
        sb.Append("," + Headers[col]);

    // Move to the next line.
    sb.AppendLine();

    for (row = 0; row < rows; row++)
    {
        // Add the first field in this row.
        sb.Append(Data[0][row]);

        // Add the other fields in this row separated by commas.
        for (int col = 1; col < cols; col++)
            sb.Append("," + Data[col][row]);

        // Move to the next line.
        sb.AppendLine();
    }

    // Return the CSV format string.
    return sb.ToString();
}

Then, export it to Excel:

public void ExportToExcel()
{
    // Initialize app and pop Excel on the screen.
    var excelApp = new Excel.Application { Visible = true };

    // I use unix time to give the files a unique name that's almost somewhat useful.
    DateTime dateTime = DateTime.UtcNow;
    long unixTime = ((DateTimeOffset)dateTime).ToUnixTimeSeconds();
    var path = @"C:\Users\my\path\here + unixTime + ".csv";

    var csv = GetCSV();
    File.WriteAllText(path, csv);

    // Create a new workbook and get its active sheet.
    excelApp.Workbooks.Open(path);

    var workSheet = (Excel.Worksheet)excelApp.ActiveSheet;

    // iterate over each value and throw it in the chart
    for (var column = 0; column < Data.Count; column++)
    {
        ((Excel.Range)workSheet.Columns[column + 1]).AutoFit();
    }

    currentSheet = workSheet;
}

You'll have to install some stuff, too...

1. Right click on the solution from solution explorer and select "Manage NuGet Packages." - add Microsoft.Office.Interop.Excel

2. It might actually work right now if you created the project the way interop wants you to. If it still doesn't work, I had to create a new project in a different category. Under New > Project, select Visual C# > Windows Desktop > Console App. Otherwise, the interop tools won't work.

In case I forgot anything, here's my 'using' statements:

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using Excel = Microsoft.Office.Interop.Excel;

A quick and dirty solution is to use the ServicePointManager.ServerCertificateValidationCallback delegate. This allows you to provide your own certificate validation. The validation is applied globally across the whole App Domain.

ServicePointManager.ServerCertificateValidationCallback +=
    (sender, cert, chain, sslPolicyErrors) => true;

I use this mainly for unit testing in situations where I want to run against an endpoint that I am hosting in process and am trying to hit it with a WCF client or the HttpClient.

For production code you may want more fine grained control and would be better off using the WebRequestHandler and its ServerCertificateValidationCallback delegate property (See dtb's answer below). Or ctacke answer using the HttpClientHandler. I am preferring either of these two now even with my integration tests over how I used to do it unless I cannot find any other hook.

This page might help you out. Everything you need to know about HTML5 video and audio

var video = document.createElement('video');
var curtime = video.currentTime;

If you already have the video element, .currentTime should work. If you need more details, that webpage should be able to help.

If you are running IIS on your PC you can add the directory that you are trying to reach as a Virtual Directory. To do this you right-click on your Site in ISS and press "Add Virtual Directory". Name the virtual folder. Point the virtual folder to your folder location on your local PC. You also have to supply credentials that has privileges to access the specific folder eg. HOSTNAME\username and password. After that you can access the file in the virtual folder as any other file on your site.

http://sitename.com/virtual_folder_name/filename.fileextension

By the way, this also works with Chrome that otherwise does not accept the file-protocol file://

Hope this helps someone :)

pip show <package name> will provide the location for Windows and macOS, and I'm guessing any system. :)

For example:

> pip show cvxopt
Name: cvxopt
Version: 1.2.0
...
Location: /usr/local/lib/python2.7/site-packages

Check the syntax of your connection string in the web.config. It should be something like ConnectionString="Data Source=C:\DataDictionary\NerdDinner.sdf"

How to update from 22.xx.x to 23.0.2 (my solution). This will beat the dependency issues.

I was suffering from this issue for days, and I have tried every single solution on this link, but no luck. I finally figured out a solution that actually works!

Please note that this solution works in Windows 7 (64 bit). It should probably work for other Windows operating systems.

Here we go:

1. download the latest ADT bundle from

   http://developer.android.com/sdk/index.html#download

2. unzip it and open "eclipse" folder --> "plugins" folder

3. Now go to your old eclipse and open "eclipse" folder --> "plugins" folder, and copy everything inside.

4. Now paste them into the "plugins" folder of the (NEW ECLIPSE), but DO NOT overwrite anything.

5. While inside of the "plugins" folder of your new Eclipse, do the search. Type in 22. (notice 22 with a dot) and hit enter.

6. The search result will show up all the files or folders with .....22.6...... For example,

   com.android.ide.eclipse.adt_**22.6.2**.v201403212031-1085508
   

7. Highlight all of these files/folders and hit delete key.

8. Make sure to update your old API/SDK to the latest version and load this sdk directory to work with your new eclipse.

or

You can watch this video, which shows you how to move all your SDK/API to your new SDK folder.

Link: https://www.youtube.com/watch?v=jPZpJdnbbN0

I have not tried to update from any other ADT versions, but I think it should work for any old ADT versions too.

Don't forget to backup stuff before attempting.

You need make sure to start the session at the top of every PHP file where you want to use the $_SESSION superglobal. Like this:

<?php
  session_start();
  echo $_SESSION['youritem'];
?>

You forgot the Session HELPER.

Check this link : book.cakephp.org/2.0/en/core-libraries/helpers/session.html

Another method is has_key() (if still using Python 2.X):

>>> a={"1":"one","2":"two"}
>>> a.has_key("1")
True

Use substring

http://php.net/manual/en/function.substr.php

$foo = substr("abcde",0, 3) . "...";

with ES6:

const groupBy = (items, key) => items.reduce(
  (result, item) => ({
    ...result,
    [item[key]]: [
      ...(result[item[key]] || []),
      item,
    ],
  }), 
  {},
);

var Ihours = Math.floor(TotMin / 60);          

var Iminutes = TotMin % 60; var TotalTime = Ihours+":"+Iminutes+':00';

   $.ajax({
            url: ../..,
            cache: false,
            type: "POST",                
            data: JSON.stringify({objRoot: TotalTime}) ,
            dataType: 'json',
            contentType: "application/json; charset=utf-8",
            success: function (response) {

            },
            error: function (er) {
                console.log(er);
            }
        });

Using __doPostBack directly is sooooo the 2000s. Anybody coding WebForms in 2018 uses GetPostBackEventReference

(More seriously though, adding this as an answer for completeness. Using the __doPostBack directly is bad practice (single underscore prefix typically indicates a private member and double indicates a more universal private member), though it probably won't change or become obsolete at this point. We have a fully supported mechanism in ClientScriptManager.GetPostBackEventReference.)

Assuming your btnRefresh is inside our UpdatePanel and causes a postback, you can use GetPostBackEventReference like this (inspiration):

function RefreshGrid() {
    <%= ClientScript.GetPostBackEventReference(btnRefresh, String.Empty) %>;
}

Here is how it worked beautifully for me. In the window resources add the image.

   <Image x:Key="delImg" >
    <Image.Source>
     <BitmapImage UriSource="Images/delitem.gif"></BitmapImage>
    </Image.Source>
   </Image>

Then the code goes like this.

Image img = new Image()

img.Source = ((Image)this.Resources["delImg"]).Source;

"this" is referring to the Window object

This is another way to do error handling in C which is more performant than using setjmp/longjmp. Unfortunately, it will not work with MSVC but if using only GCC/Clang is an option, then you might consider it. Specifically, it uses the "label as value" extension, which allows you to take the address of a label, store it in a value and and jump to it unconditionally. I'll present it using an example:

GameEngine *CreateGameEngine(GameEngineParams const *params)
{
    /* Declare an error handler variable. This will hold the address
       to jump to if an error occurs to cleanup pending resources.
       Initialize it to the err label which simply returns an
       error value (NULL in this example). The && operator resolves to
       the address of the label err */
    void *eh = &&err;

    /* Try the allocation */
    GameEngine *engine = malloc(sizeof *engine);
    if (!engine)
        goto *eh; /* this is essentially your "throw" */

    /* Now make sure that if we throw from this point on, the memory
       gets deallocated. As a convention you could name the label "undo_"
       followed by the operation to rollback. */
    eh = &&undo_malloc;

    /* Now carry on with the initialization. */
    engine->window = OpenWindow(...);
    if (!engine->window)
        goto *eh;   /* The neat trick about using approach is that you don't
                       need to remember what "undo" label to go to in code.
                       Simply go to *eh. */

    eh = &&undo_window_open;

    /* etc */

    /* Everything went well, just return the device. */
    return device;

    /* After the return, insert your cleanup code in reverse order. */
undo_window_open: CloseWindow(engine->window);
undo_malloc: free(engine);
err: return NULL;
}

If you so wish, you could refactor common code in defines, effectively implementing your own error-handling system.

/* Put at the beginning of a function that may fail. */
#define declthrows void *_eh = &&err

/* Cleans up resources and returns error result. */
#define throw goto *_eh

/* Sets a new undo checkpoint. */
#define undo(label) _eh = &&undo_##label

/* Throws if [condition] evaluates to false. */
#define check(condition) if (!(condition)) throw

/* Throws if [condition] evaluates to false. Then sets a new undo checkpoint. */
#define checkpoint(label, condition) { check(condition); undo(label); }

Then the example becomes

GameEngine *CreateGameEngine(GameEngineParams const *params)
{
    declthrows;

    /* Try the allocation */
    GameEngine *engine = malloc(sizeof *engine);
    checkpoint(malloc, engine);

    /* Now carry on with the initialization. */
    engine->window = OpenWindow(...);
    checkpoint(window_open, engine->window);

    /* etc */

    /* Everything went well, just return the device. */
    return device;

    /* After the return, insert your cleanup code in reverse order. */
undo_window_open: CloseWindow(engine->window);
undo_malloc: free(engine);
err: return NULL;
}

You might mean this:

var unEnumeratedArray = [];
var wtfObject = {
                 key    : 'val', 
                 0      : (undefined = 'Look, I\'m defined'),
                 'new'  : 'keyword', 
                 '{!}'  : 'use bracket syntax',
                 '        ': '8 spaces'
                };

for(var key in wtfObject){
    unEnumeratedArray[key] = wtfObject[key];
}
console.log('HAS KEYS PER VALUE NOW:', unEnumeratedArray, unEnumeratedArray[0], 
             unEnumeratedArray.key, unEnumeratedArray['new'], 
             unEnumeratedArray['{!}'], unEnumeratedArray['        ']);

You can set an enumerable for an Object like: ({})[0] = 'txt'; and you can set a key for an Array like: ([])['myKey'] = 'myVal';

Hope this helps :)

To clarify some points:

As jro has mentioned, the right way is to use subprocess.communicate.

Yet, when feeding the stdin using subprocess.communicate with input, you need to initiate the subprocess with stdin=subprocess.PIPE according to the docs.

Note that if you want to send data to the process’s stdin, you need to create the Popen object with stdin=PIPE. Similarly, to get anything other than None in the result tuple, you need to give stdout=PIPE and/or stderr=PIPE too.

Also qed has mentioned in the comments that for Python 3.4 you need to encode the string, meaning you need to pass Bytes to the input rather than a string. This is not entirely true. According to the docs, if the streams were opened in text mode, the input should be a string (source is the same page).

If streams were opened in text mode, input must be a string. Otherwise, it must be bytes.

So, if the streams were not opened explicitly in text mode, then something like below should work:

import subprocess
command = ['myapp', '--arg1', 'value_for_arg1']
p = subprocess.Popen(command, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
output = p.communicate(input='some data'.encode())[0]

I've left the stderr value above deliberately as STDOUT as an example.

That being said, sometimes you might want the output of another process rather than building it up from scratch. Let's say you want to run the equivalent of echo -n 'CATCH\nme' | grep -i catch | wc -m. This should normally return the number characters in 'CATCH' plus a newline character, which results in 6. The point of the echo here is to feed the CATCH\nme data to grep. So we can feed the data to grep with stdin in the Python subprocess chain as a variable, and then pass the stdout as a PIPE to the wc process' stdin (in the meantime, get rid of the extra newline character):

import subprocess

what_to_catch = 'catch'
what_to_feed = 'CATCH\nme'

# We create the first subprocess, note that we need stdin=PIPE and stdout=PIPE
p1 = subprocess.Popen(['grep', '-i', what_to_catch], stdin=subprocess.PIPE, stdout=subprocess.PIPE)

# We immediately run the first subprocess and get the result
# Note that we encode the data, otherwise we'd get a TypeError
p1_out = p1.communicate(input=what_to_feed.encode())[0]

# Well the result includes an '\n' at the end, 
# if we want to get rid of it in a VERY hacky way
p1_out = p1_out.decode().strip().encode()

# We create the second subprocess, note that we need stdin=PIPE
p2 = subprocess.Popen(['wc', '-m'], stdin=subprocess.PIPE, stdout=subprocess.PIPE)

# We run the second subprocess feeding it with the first subprocess' output.
# We decode the output to convert to a string
# We still have a '\n', so we strip that out
output = p2.communicate(input=p1_out)[0].decode().strip()

This is somewhat different than the response here, where you pipe two processes directly without adding data directly in Python.

Hope that helps someone out.

Step 1: There is only one thing to import on top:

import {Route} from 'react-router-dom';

Step 2: In your Route, pass the history:

<Route
  exact
  path='/posts/add'
  render={({history}) => (
    <PostAdd history={history} />
  )}
/>

Step 3: history gets accepted as part of props in the next Component, so you can simply:

this.props.history.push('/');

That was easy and really powerful.

If you can move to SQL Server 2008, you can take advantage of the FILESTREAM support which gives you the best of both - the files are stored in the filesystem, but the database integration is much better than just storing a filepath in a varchar field. Your query can return a standard .NET file stream, which makes the integration a lot simpler.

Getting Started with FILESTREAM Storage

There're several NuGet packages which can help with formatting. In some cases the capabilities of string.Format are enough, but you may want to auto-size columns based on content, at least.

ConsoleTableExt

ConsoleTableExt is a simple library which allows formatting tables, including tables without grid lines. (A more popular package ConsoleTables doesn't seem to support borderless tables.) Here's an example of formatting a list of objects with columns sized based on their content:

ConsoleTableBuilder
    .From(orders
        .Select(o => new object[] {
            o.CustomerName,
            o.Sales,
            o.Fee,
            o.Value70,
            o.Value30
        })
        .ToList())
    .WithColumn(
        "Customer",
        "Sales",
        "Fee",
        "70% value",
        "30% value")
    .WithFormat(ConsoleTableBuilderFormat.Minimal)
    .WithOptions(new ConsoleTableBuilderOption { DividerString = "" })
    .ExportAndWriteLine();

CsConsoleFormat

If you need more features than that, any console formatting can be achieved with CsConsoleFormat.† For example, here's formatting of a list of objects as a grid with fixed column width of 10, like in the other answers using string.Format:

ConsoleRenderer.RenderDocument(
    new Document { Color = ConsoleColor.Gray }
        .AddChildren(
            new Grid { Stroke = LineThickness.None }
                .AddColumns(10, 10, 10, 10, 10)
                .AddChildren(
                    new Div("Customer"),
                    new Div("Sales"),
                    new Div("Fee"),
                    new Div("70% value"),
                    new Div("30% value"),
                    orders.Select(o => new object[] {
                        new Div().AddChildren(o.CustomerName),
                        new Div().AddChildren(o.Sales),
                        new Div().AddChildren(o.Fee),
                        new Div().AddChildren(o.Value70),
                        new Div().AddChildren(o.Value30)
                    })
                )
        ));

It may look more complicated than pure string.Format, but now it can be customized. For example:

• If you want to auto-size columns based on content, replace AddColumns(10, 10, 10, 10, 10) with AddColumns(-1, -1, -1, -1, -1) (-1 is a shortcut to GridLength.Auto, you have more sizing options, including percentage of console window's width).

• If you want to align number columns to the right, add { Align = Right } to a cell's initializer.

• If you want to color a column, add { Color = Yellow } to a cell's initializer.

• You can change border styles and more.

_{† CsConsoleFormat was developed by me.}

Use all the jackson dependencies(databind,core, annotations, scala(if you are using spark and scala)) with the same version.. and upgrade the versions to the latest releases..

<dependency>
            <groupId>com.fasterxml.jackson.module</groupId>
            <artifactId>jackson-module-scala_2.11</artifactId>
            <version>2.9.4</version>
        </dependency>

        <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-databind</artifactId>
        <version>2.9.4</version>
        <exclusions>
            <exclusion>
                <groupId>com.fasterxml.jackson.core</groupId>
                <artifactId>jackson-core</artifactId>
            </exclusion>
            <exclusion>
                <groupId>com.fasterxml.jackson.core</groupId>
                <artifactId>jackson-annotations</artifactId>
            </exclusion>
        </exclusions>
    </dependency>
    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-core</artifactId>
        <version>2.9.4</version>
    </dependency>

        <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-annotations</artifactId>
        <version>2.9.4</version>

        </dependency>

Note: Use Scala dependency only if you are working with scala. Otherwise it is not needed.

A simple solution that worked for me is to close the Terminal and restart it.

AFAIK, you don't need to map the UNC path to a drive letter in order to establish credentials for a server. I regularly used batch scripts like:

net use \\myserver /user:username password

:: do something with \\myserver\the\file\i\want.xml

net use /delete \\my.server.com

However, any program running on the same account as your program would still be able to access everything that username:password has access to. A possible solution could be to isolate your program in its own local user account (the UNC access is local to the account that called NET USE).

Note: Using SMB accross domains is not quite a good use of the technology, IMO. If security is that important, the fact that SMB lacks encryption is a bit of a damper all by itself.

//Set fixed border
yourForm.FormBorderStyle = System.Windows.Forms.FormBorderStyle.Fixed3D

//Set the state of your form to maximized       
yourForm.WindowState = FormWindowState.Maximized

//Disable the minimize box and the maximize box
yourForm.MinimizeBox = False
yourForm.MaximizeBox = False

<!DOCTYPE html>
<html>
<head>
<script>
function vali() {
var u=document.forms["myform"]["user"].value;
var p=document.forms["myform"]["pwd"].value;
if(u == p) {
alert("Welcome");
window.location="sec.html";
return false;
}
else
{
alert("Please Try again!");
return false;
}
}
</script>
</head>
<body>
<form method="post">
<fieldset style="width:35px;">  <legend>Login Here</legend>
<input type="text" name="user" placeholder="Username" required>
<br>
<input type="Password" name="pwd" placeholder="Password" required>
<br>
<input type="submit" name="submit" value="submit" onclick="return vali()">
</form>
</fieldset>
</html>

In your eclipse IDE on project explorer acess the server.xml like in:

And remove context tags with duplicates references for your project:

Also can use without parent

say router definition like:

{path:'/about',    name: 'About',   component: AboutComponent}

then can navigate by name instead of path

goToAboutPage() {
    this.router.navigate(['About']); // here "About" is name not path
}

Updated for V2.3.0

In Routing from v2.0 name property no more exist. route define without name property. so you should use path instead of name. this.router.navigate(['/path']) and no leading slash for path so use path: 'about' instead of path: '/about'

router definition like:

{path:'about', component: AboutComponent}

then can navigate by path

goToAboutPage() {
    this.router.navigate(['/about']); // here "About" is path
}

I like

 Get-WmiObject Win32_computersystem | format-custom *

That seems to expand everything.

There's also a show-object command in the PowerShellCookbook module that does it in a GUI. Jeffrey Snover, the PowerShell creator, uses it in his unplugged videos (recommended).

Although most often I use

Get-WmiObject Win32_computersystem | fl *

It avoids the .format.ps1xml file that defines a table or list view for the object type, if there are any. The format file may even define column headers that don't match any property names.

Make sure the install path of JDK is in your Path variable in Windows.

Assuming you are on Windows (this bug is caused by the crappy bat files escaping), It is a bug introduced in the latest versions (7.0.56 and 8.0.14) to workaround another bug. Try to remove the " around the JAVA_OPTS declaration in catalina.bat. It fixed it for me with Tomcat 7.0.56 yesterday.

In 7.0.56 in bin/catalina.bat:179 and 184

:noJuliConfig
set "JAVA_OPTS=%JAVA_OPTS% %LOGGING_CONFIG%"

..

:noJuliManager
set "JAVA_OPTS=%JAVA_OPTS% %LOGGING_MANAGER%"

to

:noJuliConfig
set JAVA_OPTS=%JAVA_OPTS% %LOGGING_CONFIG%

.. 

:noJuliManager
set JAVA_OPTS=%JAVA_OPTS% %LOGGING_MANAGER%

For your asterisk, it might only be a configuration of yours somewhere that appends it to the host declaration.

I saw this on Tomcat's bugtracker yesterday but I can't find the link again. Edit Found it! https://issues.apache.org/bugzilla/show_bug.cgi?id=56895

I hope it fixes your problem.

Launch terminal and run open -n /Applications/Eclipse.app for a new instance.

Decode it.

>>> b'a string'.decode('ascii')
'a string'

To get bytes from string, encode it.

>>> 'a string'.encode('ascii')
b'a string'

Why not simply using background-clip?

-webkit-background-clip: padding;
   -moz-background-clip: padding;
        background-clip: padding-box;

See:
http://caniuse.com/#search=background-clip
https://developer.mozilla.org/en-US/docs/Web/CSS/background-clip
https://css-tricks.com/almanac/properties/b/background-clip

Issue : Failed to allocate a 37748748 byte allocation with 16777120 free bytes and 17MB until OOM

Solution : 1.open your manifest file 2. inside application tag just add below two lines

 android:hardwareAccelerated="false"
 android:largeHeap="true"

Example :

 <application
        android:allowBackup="true"
        android:hardwareAccelerated="false"
        android:largeHeap="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">

I'm facing the same issue.

The issue because of X-Code.

Solution: 1. Open X-code and accept user agreement (T&C). or 2. Restart your MAC, It will resolve automatically.

Used solution from @sinan-kozak, except fixed a few bugs. Specifically, we shouldn't use View.MeasureSpec.UNSPECIFIED for both the width and height when calling measureScrapChild as that won't properly account for wrapped text in the child. Instead, we will pass through the width and height modes from the parent which will allow things to work for both horizontal and vertical layouts.

public class MyLinearLayoutManager extends LinearLayoutManager {

public MyLinearLayoutManager(Context context, int orientation, boolean reverseLayout)    {
    super(context, orientation, reverseLayout);
}

private int[] mMeasuredDimension = new int[2];

@Override
public void onMeasure(RecyclerView.Recycler recycler, RecyclerView.State state,
                      int widthSpec, int heightSpec) {
    final int widthMode = View.MeasureSpec.getMode(widthSpec);
    final int heightMode = View.MeasureSpec.getMode(heightSpec);
    final int widthSize = View.MeasureSpec.getSize(widthSpec);
    final int heightSize = View.MeasureSpec.getSize(heightSpec);
    int width = 0;
    int height = 0;
    for (int i = 0; i < getItemCount(); i++) {    
        if (getOrientation() == HORIZONTAL) {
            measureScrapChild(recycler, i,
                View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED),
                View.MeasureSpec.makeMeasureSpec(heightSize, heightMode),
                mMeasuredDimension);

            width = width + mMeasuredDimension[0];
            if (i == 0) {
                height = mMeasuredDimension[1];
            }
        } else {
            measureScrapChild(recycler, i,
                View.MeasureSpec.makeMeasureSpec(widthSize, widthMode),
                View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED),
                mMeasuredDimension);

            height = height + mMeasuredDimension[1];
            if (i == 0) {
                width = mMeasuredDimension[0];
            }
        }
    }

    // If child view is more than screen size, there is no need to make it wrap content. We can use original onMeasure() so we can scroll view.
    if (height < heightSize && width < widthSize) {

        switch (widthMode) {
            case View.MeasureSpec.EXACTLY:
                width = widthSize;
            case View.MeasureSpec.AT_MOST:
            case View.MeasureSpec.UNSPECIFIED:
        }

        switch (heightMode) {
            case View.MeasureSpec.EXACTLY:
                height = heightSize;
            case View.MeasureSpec.AT_MOST:
            case View.MeasureSpec.UNSPECIFIED:
        }

        setMeasuredDimension(width, height);
    } else {
        super.onMeasure(recycler, state, widthSpec, heightSpec);
    }
}

private void measureScrapChild(RecyclerView.Recycler recycler, int position, int widthSpec,
                               int heightSpec, int[] measuredDimension) {

   View view = recycler.getViewForPosition(position);

   // For adding Item Decor Insets to view
   super.measureChildWithMargins(view, 0, 0);
    if (view != null) {
        RecyclerView.LayoutParams p = (RecyclerView.LayoutParams) view.getLayoutParams();
        int childWidthSpec = ViewGroup.getChildMeasureSpec(widthSpec,
                    getPaddingLeft() + getPaddingRight() + getDecoratedLeft(view) + getDecoratedRight(view), p.width);
            int childHeightSpec = ViewGroup.getChildMeasureSpec(heightSpec,
                    getPaddingTop() + getPaddingBottom() + getDecoratedTop(view) + getDecoratedBottom(view) , p.height);
            view.measure(childWidthSpec, childHeightSpec);

            // Get decorated measurements
            measuredDimension[0] = getDecoratedMeasuredWidth(view) + p.leftMargin + p.rightMargin;
            measuredDimension[1] = getDecoratedMeasuredHeight(view) + p.bottomMargin + p.topMargin;
            recycler.recycleView(view);
        }
    }
}

`

One of the simplest explanation given on Brilliant's wiki:

Abstract data types, commonly abbreviated ADTs, are a way of classifying data structures based on how they are used and the behaviors they provide. They do not specify how the data structure must be implemented or laid out in memory, but simply provide a minimal expected interface and set of behaviors. For example, a stack is an abstract data type that specifies a linear data structure with LIFO (last in, first out) behavior. Stacks are commonly implemented using arrays or linked lists, but a needlessly complicated implementation using a binary search tree is still a valid implementation. To be clear, it is incorrect to say that stacks are arrays or vice versa. An array can be used as a stack. Likewise, a stack can be implemented using an array.

Since abstract data types don't specify an implementation, this means it's also incorrect to talk about the time complexity of a given abstract data type. An associative array may or may not have O(1) average search times. An associative array that is implemented by a hash table does have O(1) average search times.

Example for ADT: List - can be implemented using Array and LinkedList, Queue, Deque, Stack, Associative array, Set.

https://brilliant.org/wiki/abstract-data-types/?subtopic=types-and-data-structures&chapter=abstract-data-types

Besides put all your assets in the public folder, you can use the HTML::image() Method, and only needs an argument which is the path to the image, relative on the public folder, as well:

{{ HTML::image('imgs/picture.jpg') }}

Which generates the follow HTML code:

<img src="http://localhost:8000/imgs/picture.jpg">

The link to other elements of HTML::image() Method: http://laravel-recipes.com/recipes/185/generating-an-html-image-element

You might need a GLOBAL TEMPORARY TABLE.

In Oracle these are created once and then when invoked the data is private to your session.

Oracle Documentation Link

Try something like this...

CREATE GLOBAL TEMPORARY TABLE temp_number
   ( number_column   NUMBER( 10, 0 )
   )
   ON COMMIT DELETE ROWS;

BEGIN 
   INSERT INTO temp_number
      ( number_column )
      ( select distinct sgbstdn_pidm 
          from sgbstdn 
         where sgbstdn_majr_code_1 = 'HS04' 
           and sgbstdn_program_1 = 'HSCOMPH' 
      ); 

    FOR pidms_rec IN ( SELECT number_column FROM temp_number )
    LOOP 
        -- Do something here
        NULL; 
    END LOOP; 
END; 
/

If this folder is the first in the command then it won't work with a space in the folder name, so replace the space in the folder name with an underscore.

On top of @unutbu answer, you could coerce pandas numpy object array to native (float64) type, something along the line

import pandas as pd
pd.to_numeric(df['tester'], errors='coerce')

Specify errors='coerce' to force strings that can't be parsed to a numeric value to become NaN. Column type would be dtype: float64, and then isnan check should work

If you don't support legacy browsers, I'd use flexbox because it's well supported and will simply solve most of your layout problems.

#table-id td:nth-child(1) { 
    /* nth-child(1) is the first column, change to fit your needs */
    display: flex;
    justify-content: center;
}

This centers all content in the first <td> of every row.

From ggplot2 2.0.0 you can use the margin = argument of element_text() to change the distance between the axis title and the numbers. Set the values of the margin on top, right, bottom, and left side of the element.

ggplot(mpg, aes(cty, hwy)) + geom_point()+
  theme(axis.title.y = element_text(margin = margin(t = 0, r = 20, b = 0, l = 0)))

margin can also be used for other element_text elements (see ?theme), such as axis.text.x, axis.text.y and title.

addition

in order to set the margin for axis titles when the axis has a different position (e.g., with scale_x_...(position = "top"), you'll need a different theme setting - e.g. axis.title.x.top. See https://github.com/tidyverse/ggplot2/issues/4343.

Works for me:

List<Item> list = Task.Run(() => manager.GetList()).Result;

in this way it is not necessary to mark the method with async in the call.

My root cause was that I forgot to add the # before the id name. Lame but true.

From

$('scheduleModal').modal('show');

To

$('#scheduleModal').modal('show');

For your reference, the code sequence that works for me is

<script>
function scheduleRequest() {
        $('#scheduleModal').modal('show');
    }
</script>
<script src="<c:url value="/resources/bootstrap/js/bootstrap.min.js"/>">
</script>
<script
    src="<c:url value="/resources/plugins/fastclick/fastclick.min.js"/>">
</script>
<script
    src="<c:url value="/resources/plugins/slimScroll/jquery.slimscroll.min.js"/>">
</script>
<script
    src="<c:url value="/resources/plugins/datatables/jquery.dataTables.min.js"/>">  
</script>
<script
    src="<c:url value="/resources/plugins/datatables/dataTables.bootstrap.min.js"/>">
</script>
<script src="<c:url value="/resources/dist/js/demo.js"/>">
</script>

To keep beginner attitude you can explain that all the command line is automaticaly splite in a array fo String (the String[]).

For static you have to explain, that it not a field like another : it is unique in the JVM even if you have thousand instances of the class

So main is static, because it is the only way to find it (linked in its own class) in a jar.

... after you look at coding, and your job begin ...

As a one-liner into vim:

:set tabstop=4 shiftwidth=4

For permanent setup, add these lines to ~/.vimrc:

set tabstop=4
set shiftwidth=4

NOTE: Add set expandtab if you prefer 4-spaces indentation, instead of a tab indentation.

Actually, you are looking for the AJAX CALL, in which you will replace the URL parameter value with the link of the JSON file to get the JSON values.

$.ajax({
    url: "File.json", //the path of the file is replaced by File.json
    dataType: "json",
    success: function (response) {
        console.log(response); //it will return the json array
    }
});

You need to use cast. I see the other answers, and they will really work, but as the tag is C++ I'd suggest you to use static_cast:

float m = static_cast< float >( a.y - b.y ) / static_cast< float >( a.x - b.x );

TYPE variable = jsonbody["key"]?.Value<TYPE>() ?? DEFAULT_VALUE;

e.g.

bool attachMap = jsonbody["map"]?.Value<bool>() ?? false;

Simplest solution seems to be specifying the ylim range. Here is some code to do this automatically (left default, right - adjusted):

# default y-axis
barplot(dat, beside=TRUE)

# automatically adjusted y-axis
barplot(dat, beside=TRUE, ylim=range(pretty(c(0, dat))))

The trick is to use pretty() which returns a list of interval breaks covering all values of the provided data. It guarantees that the maximum returned value is 1) a round number 2) greater than maximum value in the data.

In the example 0 was also added pretty(c(0, dat)) which makes sure that axis starts from 0.

You can do that without an I/O redirection:

sed -i 's/$/\n/' filename

You can also use this command to append a newline to a list of files:

find dir -name filepattern | xargs sed -i 's/$/\n/' filename

For echo, some shells implement it as a shell builtin command. It might not accept the -e option. If you still want to use echo, try to find where the echo binary file is, using which echo. In most cases, it is located in /bin/echo, so you can use /bin/echo -e "\n" to echo a new line.

Try the following:

print "First is: %f" % (first)
print "Second is: %f" % (second)

I am unsure what answer is. But apart from that, this will be:

print "DONE: %f DIVIDED BY %f EQUALS %f, SWEET MATH BRO!" % (first, second, ans)

There's a lot of text on Format String Specifiers. You can google it and get a list of specifiers. One thing I forgot to note:

If you try this:

print "First is: %s" % (first)

It converts the float value in first to a string. So that would work as well.

If you're looking for arbitrary strings, and not just characters, you can use an overload of IndexOfAny which takes string arguments from the new project NLib:

if (s.IndexOfAny("aaa", "bbb", "ccc", StringComparison.Ordinal) >= 0)

This one is working perfect

QColorDialog *dialog = new QColorDialog(this);
QColor color=  dialog->getColor();
QVariant variant= color;
QString colcode = variant.toString();
ui->label->setStyleSheet("QLabel { background-color :"+colcode+" ; color : blue; }");

getColor() method returns the selected color. You can change label color using stylesheet

The java.net.URL class is in fact not at all a good way of validating URLs. MalformedURLException is not thrown on all malformed URLs during construction. Catching IOException on java.net.URL#openConnection().connect() does not validate URL either, only tell wether or not the connection can be established.

Consider this piece of code:

    try {
        new URL("http://.com");
        new URL("http://com.");
        new URL("http:// ");
        new URL("ftp://::::@example.com");
    } catch (MalformedURLException malformedURLException) {
        malformedURLException.printStackTrace();
    }

..which does not throw any exceptions.

I recommend using some validation API implemented using a context free grammar, or in very simplified validation just use regular expressions. However I need someone to suggest a superior or standard API for this, I only recently started searching for it myself.

Note It has been suggested that URL#toURI() in combination with handling of the exception java.net. URISyntaxException can facilitate validation of URLs. However, this method only catches one of the very simple cases above.

The conclusion is that there is no standard java URL parser to validate URLs.

Cron utility is an effective way to schedule a routine background job at a specific time and/or day on an on-going basis.

Linux Crontab Format

MIN HOUR DOM MON DOW CMD

Example::Scheduling a Job For a Specific Time

The basic usage of cron is to execute a job in a specific time as shown below. This will execute the Full backup shell script (full-backup) on 10th June 08:30 AM.

Please note that the time field uses 24 hours format. So, for 8 AM use 8, and for 8 PM use 20.

30 08 10 06 * /home/yourname/full-backup

• 30 – 30th Minute
• 08 – 08 AM
• 10 – 10th Day
• 06 – 6th Month (June)
• *– Every day of the week

In your case, for 2.30PM,

30 14 * * * YOURCMD

1. 30 – 30th Minute
2. 14 – 2PM
3. *– Every day
4. *– Every month
5. *– Every day of the week

To know more about cron, visit this website.

Try the Vjet Javascript IDE from ebay (installation)

And I have to add one more thing: This bit of shorthand is an abomination. It misuses an accidental interpreter optimization (not bothering with the second operation if the first is truthy) to control an assignment. That use has nothing to do with the purpose of the operator. I do not believe it should ever be used.

I prefer the ternary operator for initialization, eg,

var title = title?title:'Error';

This uses a one-line conditional operation for its correct purpose. It still plays unsightly games with truthiness but, that's Javascript for you.

Check if there is anything to delete with :

ipcs -a | grep `whoami`

On linux delete them all via :

ipcs | nawk -v u=`whoami` '/Shared/,/^$/{ if($6==0&&$3==u) print "ipcrm shm",$2,";"}/Semaphore/,/^$/{ if($3==u) print "ipcrm sem",$2,";"}' | /bin/sh

For sun it would be :

ipcs -a | nawk -v u=`whoami` '$5==u &&(($1=="m" && $9==0)||($1=="s")){print "ipcrm -"$1,$2,";"}' | /bin/sh

courtsesy of di.uoa.gr

Check again if all is ok

For deleting your sems/shared mem - supposing you are a user in a workstation with no admin rights

If it echoing out to a browser, you should use CSS. This would require also having the comment wrapped in an HTML tag. Something like:

echo '<p style="color: red; text-align: center">
      Request has been sent. Please wait for my reply!
      </p>';

To get the "first" value:

map.values().toArray()[0]

To get the value of the "first" key:

map.get(map.keySet().toArray()[0])

Note: Above code tested and works.

I say "first" because HashMap entries are not ordered.

However, a LinkedHashMap iterates its entries in the same order as they were inserted - you could use that for your map implementation if insertion order is important.

Change the line where you print the output to:

printf("\nmaximum of %d and %d is = %d",a,b,c);

See the docs here

I think what you want is something like:

=INDEX(B:B,MATCH(C2,A:A,0))  

I should mention that MATCH checks the position at which the value can be found within A:A (given the 0, or FALSE, parameter, it looks only for an exact match and given its nature, only the first instance found) then INDEX returns the value at that position within B:B.

You can use this function wherever you need to call it:

function scroll_to(div){
   if (div.scrollTop < div.scrollHeight - div.clientHeight)
        div.scrollTop += 10; // move down

}

jquery.com: ScrollTo

trick string to boolean conversion in javascript. e.g.

var bool= "true";
console.log(bool==true) //false

var bool_con = JSON.parse(bool);

console.log(bool_con==true) //true

One of the benefits is that Razor views can be rendered inside unit tests, this is something that was not easily possible with the previous ASP.Net renderer.

From ScottGu's announcement this is listed as one of the design goals:

Unit Testable: The new view engine implementation will support the ability to unit test views (without requiring a controller or web-server, and can be hosted in any unit test project – no special app-domain required).

T-SQL is not asynchronous, so you really have no choice but to wait until SP2 ends. Luckily, that's what you want.

CREATE PROCEDURE SP1 AS
   EXEC SP2
   PRINT 'Done'

You can read here about the behaviour of attributes in many different browsers, including IE.

element.setAttribute() should do the trick, even in IE. Did you try it? If it doesn't work, then maybe element.attributeName = 'value' might work.

This can happen if you don't have mod_proxy_http enabled

sudo a2enmod proxy_http

For me to get my https based load balancer working, i had to enable the following:

sudo a2enmod ssl
sudo a2enmod proxy
sudo a2enmod proxy_balancer
sudo a2enmod proxy_http

You need to run your script after the element exists. Move the <input type="hidden" name="checkyear" id="checkyear" value=""> to the beginning.

Edited on 2014/8/25: Here was where I forked it.

Thanks @anvarik.

Here is the JSFiddle. I forgot where I forked this. But this is a good example showing you the difference between = and @

<div ng-controller="MyCtrl">
    <h2>Parent Scope</h2>
    <input ng-model="foo"> <i>// Update to see how parent scope interacts with component scope</i>    
    <br><br>
    <!-- attribute-foo binds to a DOM attribute which is always
    a string. That is why we are wrapping it in curly braces so
    that it can be interpolated. -->
    <my-component attribute-foo="{{foo}}" binding-foo="foo"
        isolated-expression-foo="updateFoo(newFoo)" >
        <h2>Attribute</h2>
        <div>
            <strong>get:</strong> {{isolatedAttributeFoo}}
        </div>
        <div>
            <strong>set:</strong> <input ng-model="isolatedAttributeFoo">
            <i>// This does not update the parent scope.</i>
        </div>
        <h2>Binding</h2>
        <div>
            <strong>get:</strong> {{isolatedBindingFoo}}
        </div>
        <div>
            <strong>set:</strong> <input ng-model="isolatedBindingFoo">
            <i>// This does update the parent scope.</i>
        </div>
        <h2>Expression</h2>    
        <div>
            <input ng-model="isolatedFoo">
            <button class="btn" ng-click="isolatedExpressionFoo({newFoo:isolatedFoo})">Submit</button>
            <i>// And this calls a function on the parent scope.</i>
        </div>
    </my-component>
</div>

var myModule = angular.module('myModule', [])
    .directive('myComponent', function () {
        return {
            restrict:'E',
            scope:{
                /* NOTE: Normally I would set my attributes and bindings
                to be the same name but I wanted to delineate between
                parent and isolated scope. */                
                isolatedAttributeFoo:'@attributeFoo',
                isolatedBindingFoo:'=bindingFoo',
                isolatedExpressionFoo:'&'
            }        
        };
    })
    .controller('MyCtrl', ['$scope', function ($scope) {
        $scope.foo = 'Hello!';
        $scope.updateFoo = function (newFoo) {
            $scope.foo = newFoo;
        }
    }]);

If you can't go over your time limit (it's a hard limit) then a thread is your best bet. You can use a loop to terminate the thread once you get to the time threshold. Whatever is going on in that thread at the time can be interrupted, allowing calculations to stop almost instantly. Here is an example:

Thread t = new Thread(myRunnable); // myRunnable does your calculations

long startTime = System.currentTimeMillis();
long endTime = startTime + 60000L;

t.start(); // Kick off calculations

while (System.currentTimeMillis() < endTime) {
    // Still within time theshold, wait a little longer
    try {
         Thread.sleep(500L);  // Sleep 1/2 second
    } catch (InterruptedException e) {
         // Someone woke us up during sleep, that's OK
    }
}

t.interrupt();  // Tell the thread to stop
t.join();       // Wait for the thread to cleanup and finish

That will give you resolution to about 1/2 second. By polling more often in the while loop, you can get that down.

Your runnable's run would look something like this:

public void run() {
    while (true) {
        try {
            // Long running work
            calculateMassOfUniverse();
        } catch (InterruptedException e) {
            // We were signaled, clean things up
            cleanupStuff();
            break;           // Leave the loop, thread will exit
    }
}

Update based on Dmitri's answer

Dmitri pointed out TimerTask, which would let you avoid the loop. You could just do the join call and the TimerTask you setup would take care of interrupting the thread. This would let you get more exact resolution without having to poll in a loop.

You can do a distinct count as follows:

SELECT COUNT(DISTINCT column_name) FROM table_name;

EDIT:

Following your clarification and update to the question, I see now that it's quite a different question than we'd originally thought. "DISTINCT" has special meaning in SQL. If I understand correctly, you want something like this:

• 2 customers had 1 pets
• 3 customers had 2 pets
• 1 customers had 3 pets

Now you're probably going to want to use a subquery:

select COUNT(*) column_name FROM (SELECT DISTINCT column_name);

Let me know if this isn't quite what you're looking for.

You can't use String.isEmpty() if it is null. Best is to have your own method to check null or empty.

public static boolean isBlankOrNull(String str) {
    return (str == null || "".equals(str.trim()));
}

I have solved the issue by the following way.

1. Creating a class . The class has some empty implementations

class MyTrustManager implements X509TrustManager {
public java.security.cert.X509Certificate[] getAcceptedIssuers() {
    return null;
}

public void checkClientTrusted(X509Certificate[] certs, String authType) {
}

public void checkServerTrusted(X509Certificate[] certs, String authType) {
}

@Override
public void checkClientTrusted(java.security.cert.X509Certificate[] paramArrayOfX509Certificate, String paramString)
        throws CertificateException {
    // TODO Auto-generated method stub

}

@Override
public void checkServerTrusted(java.security.cert.X509Certificate[] paramArrayOfX509Certificate, String paramString)
        throws CertificateException {
    // TODO Auto-generated method stub

}

2. Creating a method

private static void disableSSL() {
    try {
        TrustManager[] trustAllCerts = new TrustManager[] { new MyTrustManager() };

        // Install the all-trusting trust manager
        SSLContext sc = SSLContext.getInstance("SSL");
        sc.init(null, trustAllCerts, new java.security.SecureRandom());
        HostnameVerifier allHostsValid = new HostnameVerifier() {
            public boolean verify(String hostname, SSLSession session) {
                return true;
            }
        };
        HttpsURLConnection.setDefaultHostnameVerifier(allHostsValid);
        HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
    } catch (Exception e) {
        e.printStackTrace();
    }
}

3. Call the disableSSL() method where the exception is thrown. It worked fine.

The other answers sufficiently answer the question, but I thought I would share some additional information. Others describe the "DESCRIBE table" syntax in order to get the table information. If you want to get the information in the same format, but without using DESCRIBE, you could do:

SELECT column_name as COLUMN_NAME, nullable || '       ' as BE_NULL,
  SUBSTR(data_type || '(' || data_length || ')', 0, 10) as TYPE
 FROM all_tab_columns WHERE table_name = 'TABLENAME';

Probably doesn't matter much, but I wrote it up earlier and it seems to fit.

There's a jquery plugin for this: jquery.floatThead

Why does it take three branches/merges for every task? Can you explain more about that?

If you use a bug tracking system you can use the bug number as part of the branch name. This will keep the branch names unique, and you can prefix them with a short and descriptive word or two to keep them human readable, like "ResizeWindow-43523". It also helps make things easier when you go to clean up branches, since you can look up the associated bug. This is how I usually name my branches.

Since these branches are eventually getting merged back into master, you should be safe deleting them after you merge. Unless you're merging with --squash, the entire history of the branch will still exist should you ever need it.

Yes, it is. Just create files in the windows explorer and git automatically detects these files as currently untracked. Then add it with the command you already mentioned.

git add does not create any files. See also http://gitref.org/basic/#add

Github probably creates the file with touch and adds the file for tracking automatically. You can do this on the bash as well.

Version 1:

// Update data of question values with $data from formulay
$Q1 = Question::find($id);
$Q1->fill($data);
$Q1->push();

Version 2:

$Q1 = Question::find($id);
$Q1->field = 'YOUR TEXT OR VALUE';
$Q1->save();

In case of answered question you can use them:

$page = Page::find($id);
$page2update = $page->where('image', $path);
$page2update->image = 'IMGVALUE';
$page2update->save();

Check out the sortBy method for Eloquent: http://laravel.com/docs/eloquent

In Rails 2, I would have written:

validates_uniqueness_of :zipcode, :scope => :recorded_at

In Rails 3:

validates :zipcode, :uniqueness => {:scope => :recorded_at}

For multiple attributes:

validates :zipcode, :uniqueness => {:scope => [:recorded_at, :something_else]}

See this page for the solution! https://msdn.microsoft.com/en-us/library/7aw8zc76(v=vs.110).aspx

I was able to implement the Child form inside the parent.

In the Example below Form2 should change to the name of your child form. NewMDIChild.MdiParent=me is the main form since the control that opens (shows) the child form is the parent or Me.

NewMDIChild.Show() is your child form since you associated your child form with Dim NewMDIChild As New Form2()

Protected Sub MDIChildNew_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MenuItem2.Click
   Dim NewMDIChild As New Form2()
   'Set the Parent Form of the Child window.
   NewMDIChild.MdiParent = Me
   'Display the new form.
   NewMDIChild.Show()
End Sub

Simple and it works.

In JavaScript

setLocation(base: string) {
  window.location.href = base;
}

In HTML

<button onclick="setLocation('/<whatever>')>GO</button>"

The subject of the certificate is the entity its public key is associated with (i.e. the "owner" of the certificate).

As RFC 5280 says:

The subject field identifies the entity associated with the public key stored in the subject public key field. The subject name MAY be carried in the subject field and/or the subjectAltName extension.

X.509 certificates have a Subject (Distinguished Name) field and can also have multiple names in the Subject Alternative Name extension.

The Subject DN is made of multiple relative distinguished names (RDNs) (themselves made of attribute assertion values) such as "CN=yourname" or "O=yourorganization".

In the context of the article you're linking to, the subject would be the user/owner of the cert.

You have to check if the argument is undefined:

function func(a, b) {
    if (a === undefined) a = "default value";
    if (b === undefined) b = "default value";
}

Also note that this question has been answered before.

Dropping the table was not an option for me, since I'm keeping a running log. If every time I needed to insert I had to drop, the table would be meaningless.

My error was because I had a couple columns in the create table statement that were products of other columns, changing these fixed my problem. eg

create table foo (
field1 as int
,field2 as int
,field12 as field1 + field2 )

create table copyOfFoo (
field1 as int
,field2 as int
,field12 as field1 + field2)  --this is the problem, should just be 'as int'

insert into copyOfFoo
SELECT * FROM foo

Use 'Smalldatetime' data type

select convert(smalldatetime, getdate())

will fetch

2015-01-08 15:27:00

Using true/false as the value will have the field pre-filled if the model passed to the form has this attribute already filled:

= f.radio_button(:public?, true)
= f.label(:public?, "yes", value: true)
= f.radio_button(:public?, false)
= f.label(:public?, "no", value: false)

Intent photoPickerIntent = new Intent(Intent.ACTION_PICK);
photoPickerIntent.setType("image/*");
startActivityForResult(photoPickerIntent, 1);

ABOVE CODE TO SELECT IMAGE FROM GALLERY

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if (requestCode == 1)
        if (resultCode == Activity.RESULT_OK) {
            Uri selectedImage = data.getData();

            String filePath = getPath(selectedImage);
            String file_extn = filePath.substring(filePath.lastIndexOf(".") + 1);
            image_name_tv.setText(filePath);

            try {
                if (file_extn.equals("img") || file_extn.equals("jpg") || file_extn.equals("jpeg") || file_extn.equals("gif") || file_extn.equals("png")) {
                    //FINE
                } else {
                    //NOT IN REQUIRED FORMAT
                }
            } catch (FileNotFoundException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
}

public String getPath(Uri uri) {
    String[] projection = {MediaColumns.DATA};
    Cursor cursor = managedQuery(uri, projection, null, null, null);
    column_index = cursor
            .getColumnIndexOrThrow(MediaColumns.DATA);
    cursor.moveToFirst();
    imagePath = cursor.getString(column_index);

    return cursor.getString(column_index);
}

NOW POST THE DATA USING MULTIPART FORM DATA

HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("LINK TO SERVER");

Multipart FORM DATA

MultipartEntity mpEntity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);
if (filePath != null) {
    File file = new File(filePath);
    Log.d("EDIT USER PROFILE", "UPLOAD: file length = " + file.length());
    Log.d("EDIT USER PROFILE", "UPLOAD: file exist = " + file.exists());
    mpEntity.addPart("avatar", new FileBody(file, "application/octet"));
}

FINALLY POST DATA TO SERVER

httppost.setEntity(mpEntity);
HttpResponse response = httpclient.execute(httppost);

I had a problem installing virtualenvwrapper after successfully installing virtualenv.

My terminal complained after I did this:

pip install virtualenvwrapper

So, I unsuccessfully tried this (NOT RECOMMENDED):

sudo pip install virtualenvwrapper

Then, I successfully installed it with this:

pip install --user virtualenvwrapper

Calling .isoformat() on a date object will give you YYYY-MM-DD

from datetime import date, timedelta
(date.today() - timedelta(1)).isoformat()

Another code example: Tiny Wings Remake on Android using Cocos2d-X

You just need to add a jquery selector after the url.

See: http://api.jquery.com/load/

Example straight from the API:

$('#result').load('ajax/test.html #container');

So what that does is it loads the #container element from the specified url.

I'm a little bit new with the concept of application schedulers, but what I found here for APScheduler v3.3.1 , it's something a little bit different. I believe that for the newest versions, the package structure, class names, etc., have changed, so I'm putting here a fresh solution which I made recently, integrated with a basic Flask application:

#!/usr/bin/python3
""" Demonstrating Flask, using APScheduler. """

from apscheduler.schedulers.background import BackgroundScheduler
from flask import Flask

def sensor():
    """ Function for test purposes. """
    print("Scheduler is alive!")

sched = BackgroundScheduler(daemon=True)
sched.add_job(sensor,'interval',minutes=60)
sched.start()

app = Flask(__name__)

@app.route("/home")
def home():
    """ Function for test purposes. """
    return "Welcome Home :) !"

if __name__ == "__main__":
    app.run()

I'm also leaving this Gist here, if anyone have interest on updates for this example.

Here are some references, for future readings:

• APScheduler Doc: https://apscheduler.readthedocs.io/en/latest/
• daemon=True: https://docs.python.org/3.4/library/threading.html#thread-objects

Taken from the javadoc spec

@see <a href="URL#value">label</a> : Adds a link as defined by URL#value. The URL#value is a relative or absolute URL. The Javadoc tool distinguishes this from other cases by looking for a less-than symbol (<) as the first character.

For example : @see <a href="http://www.google.com">Google</a>

npm start --prefix path/to/your/app

& inside package.json add the following script

"scripts": {
   "preinstall":"cd $(pwd)"
}

Please note that setInterval() is often not the best solution for periodic execution - It really depends on what javascript you're actually calling periodically.

eg. If you use setInterval() with a period of 1000ms and in the periodic function you make an ajax call that occasionally takes 2 seconds to return you will be making another ajax call before the first response gets back. This is usually undesirable.

Many libraries have periodic methods that protect against the pitfalls of using setInterval naively such as the Prototype example given by Nelson.

To achieve more robust periodic execution with a function that has a jQuery ajax call in it, consider something like this:

function myPeriodicMethod() {
  $.ajax({
    url: ..., 
    success: function(data) {
      ...
    },
    complete: function() {
      // schedule the next request *only* when the current one is complete:
      setTimeout(myPeriodicMethod, 1000);
    }
  });
}

// schedule the first invocation:
setTimeout(myPeriodicMethod, 1000);

Another approach is to use setTimeout but track elapsed time in a variable and then set the timeout delay on each invocation dynamically to execute a function as close to the desired interval as possible but never faster than you can get responses back.

You can try out this code. Since you cannot override valueOf method you have to define a custom method (getEnum in the sample code below) which returns the value that you need and change your client to use this method instead.

public enum RandomEnum {

    StartHere("Start Here"),
    StopHere("Stop Here");

    private String value;

    RandomEnum(String value) {
        this.value = value;
    }

    public String getValue() {
        return value;
    }

    @Override
    public String toString() {
        return this.getValue();
    }

    public static RandomEnum getEnum(String value) {
        for(RandomEnum v : values())
            if(v.getValue().equalsIgnoreCase(value)) return v;
        throw new IllegalArgumentException();
    }
}

You can wrap all tasks which can fail in block, and use ignore_errors: yes with that block.

tasks:
  - name: ls
    command: ls -la
  - name: pwd
    command: pwd

  - block:
    - name: ls non-existing txt file
      command: ls -la no_file.txt
    - name: ls non-existing pic
      command: ls -la no_pic.jpg
    ignore_errors: yes 

Read more about error handling in blocks here.

You can do that in PL/SQL Developer v10.
1. Click on Table that you want to generate script for.
2. Click Export data.
3. Check if table is selected that you want to export data for.
4. Click on SQL inserts tab.
5. Add where clause if you don't need the whole table.
6. Select file where you will find your SQL script.
7. Click export.

JodaTime

To convert JodaTime's org.joda.time.LocalDate to java.sql.Timestamp, just do

Timestamp timestamp = new Timestamp(localDate.toDateTimeAtStartOfDay().getMillis());

To convert JodaTime's org.joda.time.LocalDateTime to java.sql.Timestamp, just do

Timestamp timestamp = new Timestamp(localDateTime.toDateTime().getMillis());

JavaTime

To convert Java8's java.time.LocalDate to java.sql.Timestamp, just do

Timestamp timestamp = Timestamp.valueOf(localDate.atStartOfDay());

To convert Java8's java.time.LocalDateTime to java.sql.Timestamp, just do

Timestamp timestamp = Timestamp.valueOf(localDateTime);

You can simply use this at the end..

echo $this->db->last_query();

Cheap and cheerful answer:

<textarea>Some raw content</textarea>

The textarea will handle tabs, multiple spaces, newlines, line wrapping all verbatim. It copies and pastes nicely and its valid HTML all the way. It also allows the user to resize the code box. You don't need any CSS, JS, escaping, encoding.

You can alter the appearance and behaviour as well. Here's a monospace font, editing disabled, smaller font, no border:

<textarea
    style="width:100%; font-family: Monospace; font-size:10px; border:0;"
    rows="30" disabled
>Some raw content</textarea>

This solution is probably not semantically correct. So if you need that, it might be best to choose a more sophisticated answer.

Maybe you could use this view, but i'm not sure.

select * from v$database;

But I think It will only show you info about the current db.

Other option, if the db is running in linux... whould be something like this:

SQL>!grep SID $TNS_ADMIN/tnsnames.ora | grep -v PLSExtProc

To test a bit you would do the following: (assuming flags is a 32 bit number)

Test Bit:

if((flags & 0x08) == 0x08)

flags = flags ^ 0x08;

flags = flags & 0xFFFFFF7F;

Well, I have a tricky method for this job. The idea is as follow-

Make some invisible HTML tags like <label>, <p>, <input> etc. in HTML body and make a pattern in tag id, for example, use list index in tag id and list value at tag class name.

Here I have two lists maintenance_next[] and maintenance_block_time[] of the same length. I want to pass these two list's data to javascript using the flask. So I take some invisible label tag and set its tag name is a pattern of list index and set its class name as value at index.

{% for i in range(maintenance_next|length): %}_x000D_
<label id="maintenance_next_{{i}}" name="{{maintenance_next[i]}}" style="display: none;"></label>_x000D_
<label id="maintenance_block_time_{{i}}" name="{{maintenance_block_time[i]}}" style="display: none;"></label>_x000D_
{% endfor%}

After this, I retrieve the data in javascript using some simple javascript operation.

<script>_x000D_
var total_len = {{ total_len }};_x000D_
_x000D_
for (var i = 0; i < total_len; i++) {_x000D_
    var tm1 = document.getElementById("maintenance_next_" + i).getAttribute("name");_x000D_
    var tm2 = document.getElementById("maintenance_block_time_" + i).getAttribute("name");_x000D_
    _x000D_
    //Do what you need to do with tm1 and tm2._x000D_
    _x000D_
    console.log(tm1);_x000D_
    console.log(tm2);_x000D_
}_x000D_
</script>

You can do it in Java 6:

Set<String> h = new HashSet<String>(Arrays.asList("a", "b", "c"));

But why? I don't find it to be more readable than explicitly adding elements.

Surprised to see so many weak answers on such a basic JS question... The top answer is no good too for these reasons:

1. it generates a global variable
2. returns true on undefined
3. uses for...in which is extremely slow by itself
4. function inside for...in is useless - return false without hasOwnProperty magic will work fine

In fact there's a simpler solution:

function isEmpty(value) {
    return Boolean(value && typeof value === 'object') && !Object.keys(value).length;
}

Actually the orderBy filter can take as a parameter not only a string but also a function. From the orderBy documentation: https://docs.angularjs.org/api/ng/filter/orderBy):

function: Getter function. The result of this function will be sorted using the <, =, > operator.

So, you could write your own function. For example, if you would like to compare cards based on a sum of opt1 and opt2 (I'm making this up, the point is that you can have any arbitrary function) you would write in your controller:

$scope.myValueFunction = function(card) {
   return card.values.opt1 + card.values.opt2;
};

and then, in your template:

ng-repeat="card in cards | orderBy:myValueFunction"

Here is the working jsFiddle

The other thing worth noting is that orderBy is just one example of AngularJS filters so if you need a very specific ordering behaviour you could write your own filter (although orderBy should be enough for most uses cases).

add or remove fragment in viewpager dynamically.
Call setupViewPager(viewPager) on activity start. To load different fragment call setupViewPagerCustom(viewPager). e.g. on button click call: setupViewPagerCustom(viewPager);

    private void setupViewPager(ViewPager viewPager)
{
    ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
    adapter.addFrag(new fragmnet1(), "HOME");
    adapter.addFrag(new fragmnet2(), "SERVICES");

    viewPager.setAdapter(adapter);
}

private void setupViewPagerCustom(ViewPager viewPager)
{

    ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());

    adapter.addFrag(new fragmnet3(), "Contact us");
    adapter.addFrag(new fragmnet4(), "ABOUT US");


    viewPager.setAdapter(adapter);
}

//Viewpageradapter, handles the views

static class ViewPagerAdapter extends FragmentStatePagerAdapter
{
    private final List<Fragment> mFragmentList = new ArrayList<>();
    private final List<String> mFragmentTitleList = new ArrayList<>();

    public ViewPagerAdapter(FragmentManager manager){
        super(manager);
    }

    @Override
    public Fragment getItem(int position) {
        return mFragmentList.get(position);
    }

    @Override
    public int getCount() {
        return mFragmentList.size();
    }

    @Override
    public int getItemPosition(Object object){
        return PagerAdapter.POSITION_NONE;
    }

    public void addFrag(Fragment fragment, String title){
        mFragmentList.add(fragment);
        mFragmentTitleList.add(title);
    }

    @Override
    public CharSequence getPageTitle(int position){
        return mFragmentTitleList.get(position);
    }
}

It turns out Java does not accept a bare Date value as DateTime. Using LocalDate instead of LocalDateTime solves the issue:

DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyyMMdd");
LocalDate dt = LocalDate.parse("20140218", formatter);

A key currently still is not required ("required" in the meaning "it will not work without"), but I think there is a good reason for the warning.

But in the documentation you may read now : "All JavaScript API applications require authentication."

I'm sure that it's planned for the future , that Javascript API Applications will not work without a key(as it has been in V2).

You better use a key when you want to be sure that your application will still work in 1 or 2 years.

• Create your points using Point values of Geometry data types in MyISAM table. As of Mysql 5.7.5, InnoDB tables now also support SPATIAL indices.

• Create a SPATIAL index on these points

• Use MBRContains() to find the values:

  SELECT  *
  FROM    table
  WHERE   MBRContains(LineFromText(CONCAT(
          '('
          , @lon + 10 / ( 111.1 / cos(RADIANS(@lon)))
          , ' '
          , @lat + 10 / 111.1
          , ','
          , @lon - 10 / ( 111.1 / cos(RADIANS(@lat)))
          , ' '
          , @lat - 10 / 111.1 
          , ')' )
          ,mypoint)
  

, or, in MySQL 5.1 and above:

    SELECT  *
    FROM    table
    WHERE   MBRContains
                    (
                    LineString
                            (
                            Point (
                                    @lon + 10 / ( 111.1 / COS(RADIANS(@lat))),
                                    @lat + 10 / 111.1
                                  ),
                            Point (
                                    @lon - 10 / ( 111.1 / COS(RADIANS(@lat))),
                                    @lat - 10 / 111.1
                                  ) 
                            ),
                    mypoint
                    )

This will select all points approximately within the box (@lat +/- 10 km, @lon +/- 10km).

This actually is not a box, but a spherical rectangle: latitude and longitude bound segment of the sphere. This may differ from a plain rectangle on the Franz Joseph Land, but quite close to it on most inhabited places.

• Apply additional filtering to select everything inside the circle (not the square)

• Possibly apply additional fine filtering to account for the big circle distance (for large distances)

You should remove the & (ampersand) symbol, so that line 4 will look like this:

$conn = ADONewConnection($config['db_type']);

This is because ADONewConnection already returns an object by reference. As per documentation, assigning the result of a reference to object by reference results in an E_DEPRECATED message as of PHP 5.3.0

I think the question was asking for a solution without the use of the Collections API. One uses arrays either for low level details, where performance matters, or for a loosely coupled SOA integration. In the later, it is OK to convert them to Collections and pass them to the business logic as that.

For the low level performance stuff, it is usually already obfuscated by the quick-and-dirty imperative state-mingling by for loops, etc. In that case converting back and forth between Collections and arrays is cumbersome, unreadable, and even resource intensive.

By the way, TopCoder, anyone? Always those array parameters! So be prepared to be able to handle them when in the Arena.

Below is my interpretation of the problem, and a solution. It is different in functionality from both of the one given by Bill K and jelovirt. Also, it handles gracefully the case when the element is not in the array.

Hope that helps!

public char[] remove(char[] symbols, char c)
{
    for (int i = 0; i < symbols.length; i++)
    {
        if (symbols[i] == c)
        {
            char[] copy = new char[symbols.length-1];
            System.arraycopy(symbols, 0, copy, 0, i);
            System.arraycopy(symbols, i+1, copy, i, symbols.length-i-1);
            return copy;
        }
    }
    return symbols;
}

I needed proper CSV parsing, not cut / awk and prayer. I'm trying this on a mac without csvtool, but macs do come with ruby, so you can do:

echo "require 'csv'; CSV.read('new.csv').each {|data| puts data[34]}" | ruby

You can use the --unset flag of git config to do this like so:

git config --global --unset user.name
git config --global --unset user.email

If you have more variables for one config you can use:

git config --global --unset-all user.name

First of all, please vote and comment on the API request on the .NET repo.

Here's my optimized version of the ObservableRangeCollection (optimized version of James Montemagno's one).

It performs very fast and is meant to reuse existing elements when possible and avoid unnecessary events, or batching them into one, when possible. The ReplaceRange method replaces/removes/adds the required elements by the appropriate indices and batches the possible events.

Tested on Xamarin.Forms UI with great results for very frequent updates to the large collection (5-7 updates per second).

Note: Since WPF is not accustomed to work with range operations, it will throw a NotSupportedException, when using the ObservableRangeCollection from below in WPF UI-related work, such as binding it to a ListBox etc. (you can still use the ObservableRangeCollection<T> if not bound to UI).
However you can use the WpfObservableRangeCollection<T> workaround.
The real solution would be creating a CollectionView that knows how to deal with range operations, but I still didn't have the time to implement this.

RAW Code - open as Raw, then do Ctrl+A to select all, then Ctrl+C to copy.

// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.

using System.Collections.Generic;
using System.Collections.Specialized;
using System.ComponentModel;
using System.Diagnostics;

namespace System.Collections.ObjectModel
{
  /// <summary>
  /// Implementation of a dynamic data collection based on generic Collection&lt;T&gt;,
  /// implementing INotifyCollectionChanged to notify listeners
  /// when items get added, removed or the whole list is refreshed.
  /// </summary>
  public class ObservableRangeCollection<T> : ObservableCollection<T>
  {
    //------------------------------------------------------
    //
    //  Private Fields
    //
    //------------------------------------------------------

    #region Private Fields    
    [NonSerialized]
    private DeferredEventsCollection _deferredEvents;
    #endregion Private Fields


    //------------------------------------------------------
    //
    //  Constructors
    //
    //------------------------------------------------------

    #region Constructors
    /// <summary>
    /// Initializes a new instance of ObservableCollection that is empty and has default initial capacity.
    /// </summary>
    public ObservableRangeCollection() { }

    /// <summary>
    /// Initializes a new instance of the ObservableCollection class that contains
    /// elements copied from the specified collection and has sufficient capacity
    /// to accommodate the number of elements copied.
    /// </summary>
    /// <param name="collection">The collection whose elements are copied to the new list.</param>
    /// <remarks>
    /// The elements are copied onto the ObservableCollection in the
    /// same order they are read by the enumerator of the collection.
    /// </remarks>
    /// <exception cref="ArgumentNullException"> collection is a null reference </exception>
    public ObservableRangeCollection(IEnumerable<T> collection) : base(collection) { }

    /// <summary>
    /// Initializes a new instance of the ObservableCollection class
    /// that contains elements copied from the specified list
    /// </summary>
    /// <param name="list">The list whose elements are copied to the new list.</param>
    /// <remarks>
    /// The elements are copied onto the ObservableCollection in the
    /// same order they are read by the enumerator of the list.
    /// </remarks>
    /// <exception cref="ArgumentNullException"> list is a null reference </exception>
    public ObservableRangeCollection(List<T> list) : base(list) { }

    #endregion Constructors

    //------------------------------------------------------
    //
    //  Public Methods
    //
    //------------------------------------------------------

    #region Public Methods

    /// <summary>
    /// Adds the elements of the specified collection to the end of the <see cref="ObservableCollection{T}"/>.
    /// </summary>
    /// <param name="collection">
    /// The collection whose elements should be added to the end of the <see cref="ObservableCollection{T}"/>.
    /// The collection itself cannot be null, but it can contain elements that are null, if type T is a reference type.
    /// </param>
    /// <exception cref="ArgumentNullException"><paramref name="collection"/> is null.</exception>
    public void AddRange(IEnumerable<T> collection)
    {
      InsertRange(Count, collection);
    }

    /// <summary>
    /// Inserts the elements of a collection into the <see cref="ObservableCollection{T}"/> at the specified index.
    /// </summary>
    /// <param name="index">The zero-based index at which the new elements should be inserted.</param>
    /// <param name="collection">The collection whose elements should be inserted into the List<T>.
    /// The collection itself cannot be null, but it can contain elements that are null, if type T is a reference type.</param>                
    /// <exception cref="ArgumentNullException"><paramref name="collection"/> is null.</exception>
    /// <exception cref="ArgumentOutOfRangeException"><paramref name="index"/> is not in the collection range.</exception>
    public void InsertRange(int index, IEnumerable<T> collection)
    {
      if (collection == null)
        throw new ArgumentNullException(nameof(collection));
      if (index < 0)
        throw new ArgumentOutOfRangeException(nameof(index));
      if (index > Count)
        throw new ArgumentOutOfRangeException(nameof(index));

      if (collection is ICollection<T> countable)
      {
        if (countable.Count == 0)
        {
          return;
        }
      }
      else if (!ContainsAny(collection))
      {
        return;
      }

      CheckReentrancy();

      //expand the following couple of lines when adding more constructors.
      var target = (List<T>)Items;
      target.InsertRange(index, collection);

      OnEssentialPropertiesChanged();

      if (!(collection is IList list))
        list = new List<T>(collection);

      OnCollectionChanged(new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Add, list, index));
    }


    /// <summary> 
    /// Removes the first occurence of each item in the specified collection from the <see cref="ObservableCollection{T}"/>.
    /// </summary>
    /// <param name="collection">The items to remove.</param>        
    /// <exception cref="ArgumentNullException"><paramref name="collection"/> is null.</exception>
    public void RemoveRange(IEnumerable<T> collection)
    {
      if (collection == null)
        throw new ArgumentNullException(nameof(collection));

      if (Count == 0)
      {
        return;
      }
      else if (collection is ICollection<T> countable)
      {
        if (countable.Count == 0)
          return;
        else if (countable.Count == 1)
          using (IEnumerator<T> enumerator = countable.GetEnumerator())
          {
            enumerator.MoveNext();
            Remove(enumerator.Current);
            return;
          }
      }
      else if (!(ContainsAny(collection)))
      {
        return;
      }

      CheckReentrancy();

      var clusters = new Dictionary<int, List<T>>();
      var lastIndex = -1;
      List<T> lastCluster = null;
      foreach (T item in collection)
      {
        var index = IndexOf(item);
        if (index < 0)
        {
          continue;
        }

        Items.RemoveAt(index);

        if (lastIndex == index && lastCluster != null)
        {
          lastCluster.Add(item);
        }
        else
        {
          clusters[lastIndex = index] = lastCluster = new List<T> { item };
        }
      }

      OnEssentialPropertiesChanged();

      if (Count == 0)
        OnCollectionReset();
      else
        foreach (KeyValuePair<int, List<T>> cluster in clusters)
          OnCollectionChanged(new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Remove, cluster.Value, cluster.Key));

    }

    /// <summary>
    /// Iterates over the collection and removes all items that satisfy the specified match.
    /// </summary>
    /// <remarks>The complexity is O(n).</remarks>
    /// <param name="match"></param>
    /// <returns>Returns the number of elements that where </returns>
    /// <exception cref="ArgumentNullException"><paramref name="match"/> is null.</exception>
    public int RemoveAll(Predicate<T> match)
    {
      return RemoveAll(0, Count, match);
    }

    /// <summary>
    /// Iterates over the specified range within the collection and removes all items that satisfy the specified match.
    /// </summary>
    /// <remarks>The complexity is O(n).</remarks>
    /// <param name="index">The index of where to start performing the search.</param>
    /// <param name="count">The number of items to iterate on.</param>
    /// <param name="match"></param>
    /// <returns>Returns the number of elements that where </returns>
    /// <exception cref="ArgumentOutOfRangeException"><paramref name="index"/> is out of range.</exception>
    /// <exception cref="ArgumentOutOfRangeException"><paramref name="count"/> is out of range.</exception>
    /// <exception cref="ArgumentNullException"><paramref name="match"/> is null.</exception>
    public int RemoveAll(int index, int count, Predicate<T> match)
    {
      if (index < 0)
        throw new ArgumentOutOfRangeException(nameof(index));
      if (count < 0)
        throw new ArgumentOutOfRangeException(nameof(count));
      if (index + count > Count)
        throw new ArgumentOutOfRangeException(nameof(index));
      if (match == null)
        throw new ArgumentNullException(nameof(match));

      if (Count == 0)
        return 0;

      List<T> cluster = null;
      var clusterIndex = -1;
      var removedCount = 0;

      using (BlockReentrancy())
      using (DeferEvents())
      {
        for (var i = 0; i < count; i++, index++)
        {
          T item = Items[index];
          if (match(item))
          {
            Items.RemoveAt(index);
            removedCount++;

            if (clusterIndex == index)
            {
              Debug.Assert(cluster != null);
              cluster.Add(item);
            }
            else
            {
              cluster = new List<T> { item };
              clusterIndex = index;
            }

            index--;
          }
          else if (clusterIndex > -1)
          {
            OnCollectionChanged(new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Remove, cluster, clusterIndex));
            clusterIndex = -1;
            cluster = null;
          }
        }

        if (clusterIndex > -1)
          OnCollectionChanged(new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Remove, cluster, clusterIndex));
      }

      if (removedCount > 0)
        OnEssentialPropertiesChanged();

      return removedCount;
    }

    /// <summary>
    /// Removes a range of elements from the <see cref="ObservableCollection{T}"/>>.
    /// </summary>
    /// <param name="index">The zero-based starting index of the range of elements to remove.</param>
    /// <param name="count">The number of elements to remove.</param>
    /// <exception cref="ArgumentOutOfRangeException">The specified range is exceeding the collection.</exception>
    public void RemoveRange(int index, int count)
    {
      if (index < 0)
        throw new ArgumentOutOfRangeException(nameof(index));
      if (count < 0)
        throw new ArgumentOutOfRangeException(nameof(count));
      if (index + count > Count)
        throw new ArgumentOutOfRangeException(nameof(index));

      if (count == 0)
        return;

      if (count == 1)
      {
        RemoveItem(index);
        return;
      }

      //Items will always be List<T>, see constructors
      var items = (List<T>)Items;
      List<T> removedItems = items.GetRange(index, count);

      CheckReentrancy();

      items.RemoveRange(index, count);

      OnEssentialPropertiesChanged();

      if (Count == 0)
        OnCollectionReset();
      else
        OnCollectionChanged(new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Remove, removedItems, index));
    }

    /// <summary> 
    /// Clears the current collection and replaces it with the specified collection,
    /// using the default <see cref="EqualityComparer{T}"/>.
    /// </summary>             
    /// <param name="collection">The items to fill the collection with, after clearing it.</param>
    /// <exception cref="ArgumentNullException"><paramref name="collection"/> is null.</exception>
    public void ReplaceRange(IEnumerable<T> collection)
    {
      ReplaceRange(0, Count, collection, EqualityComparer<T>.Default);
    }

    /// <summary>
    /// Clears the current collection and replaces it with the specified collection,
    /// using the specified comparer to skip equal items.
    /// </summary>
    /// <param name="collection">The items to fill the collection with, after clearing it.</param>
    /// <param name="comparer">An <see cref="IEqualityComparer{T}"/> to be used
    /// to check whether an item in the same location already existed before,
    /// which in case it would not be added to the collection, and no event will be raised for it.</param>
    /// <exception cref="ArgumentNullException"><paramref name="collection"/> is null.</exception>
    /// <exception cref="ArgumentNullException"><paramref name="comparer"/> is null.</exception>
    public void ReplaceRange(IEnumerable<T> collection, IEqualityComparer<T> comparer)
    {
      ReplaceRange(0, Count, collection, comparer);
    }

    /// <summary>
    /// Removes the specified range and inserts the specified collection,
    /// ignoring equal items (using <see cref="EqualityComparer{T}.Default"/>).
    /// </summary>
    /// <param name="index">The index of where to start the replacement.</param>
    /// <param name="count">The number of items to be replaced.</param>
    /// <param name="collection">The collection to insert in that location.</param>
    /// <exception cref="ArgumentOutOfRangeException"><paramref name="index"/> is out of range.</exception>
    /// <exception cref="ArgumentOutOfRangeException"><paramref name="count"/> is out of range.</exception>
    /// <exception cref="ArgumentNullException"><paramref name="collection"/> is null.</exception>
    public void ReplaceRange(int index, int count, IEnumerable<T> collection)
    {
      ReplaceRange(index, count, collection, EqualityComparer<T>.Default);
    }

    /// <summary>
    /// Removes the specified range and inserts the specified collection in its position, leaving equal items in equal positions intact.
    /// </summary>
    /// <param name="index">The index of where to start the replacement.</param>
    /// <param name="count">The number of items to be replaced.</param>
    /// <param name="collection">The collection to insert in that location.</param>
    /// <param name="comparer">The comparer to use when checking for equal items.</param>
    /// <exception cref="ArgumentOutOfRangeException"><paramref name="index"/> is out of range.</exception>
    /// <exception cref="ArgumentOutOfRangeException"><paramref name="count"/> is out of range.</exception>
    /// <exception cref="ArgumentNullException"><paramref name="collection"/> is null.</exception>
    /// <exception cref="ArgumentNullException"><paramref name="comparer"/> is null.</exception>
    public void ReplaceRange(int index, int count, IEnumerable<T> collection, IEqualityComparer<T> comparer)
    {
      if (index < 0)
        throw new ArgumentOutOfRangeException(nameof(index));
      if (count < 0)
        throw new ArgumentOutOfRangeException(nameof(count));
      if (index + count > Count)
        throw new ArgumentOutOfRangeException(nameof(index));

      if (collection == null)
        throw new ArgumentNullException(nameof(collection));
      if (comparer == null)
        throw new ArgumentNullException(nameof(comparer));

      if (collection is ICollection<T> countable)
      {
        if (countable.Count == 0)
        {
          RemoveRange(index, count);
          return;
        }
      }
      else if (!ContainsAny(collection))
      {
        RemoveRange(index, count);
        return;
      }

      if (index + count == 0)
      {
        InsertRange(0, collection);
        return;
      }

      if (!(collection is IList<T> list))
        list = new List<T>(collection);

      using (BlockReentrancy())
      using (DeferEvents())
      {
        var rangeCount = index + count;
        var addedCount = list.Count;

        var changesMade = false;
        List<T>
            newCluster = null,
            oldCluster = null;


        int i = index;
        for (; i < rangeCount && i - index < addedCount; i++)
        {
          //parallel position
          T old = this[i], @new = list[i - index];
          if (comparer.Equals(old, @new))
          {
            OnRangeReplaced(i, newCluster, oldCluster);
            continue;
          }
          else
          {
            Items[i] = @new;

            if (newCluster == null)
            {
              Debug.Assert(oldCluster == null);
              newCluster = new List<T> { @new };
              oldCluster = new List<T> { old };
            }
            else
            {
              newCluster.Add(@new);
              oldCluster.Add(old);
            }

            changesMade = true;
          }
        }

        OnRangeReplaced(i, newCluster, oldCluster);

        //exceeding position
        if (count != addedCount)
        {
          var items = (List<T>)Items;
          if (count > addedCount)
          {
            var removedCount = rangeCount - addedCount;
            T[] removed = new T[removedCount];
            items.CopyTo(i, removed, 0, removed.Length);
            items.RemoveRange(i, removedCount);
            OnCollectionChanged(new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Remove, removed, i));
          }
          else
          {
            var k = i - index;
            T[] added = new T[addedCount - k];
            for (int j = k; j < addedCount; j++)
            {
              T @new = list[j];
              added[j - k] = @new;
            }
            items.InsertRange(i, added);
            OnCollectionChanged(new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Add, added, i));
          }

          OnEssentialPropertiesChanged();
        }
        else if (changesMade)
        {
          OnIndexerPropertyChanged();
        }
      }
    }

    #endregion Public Methods


    //------------------------------------------------------
    //
    //  Protected Methods
    //
    //------------------------------------------------------

    #region Protected Methods

    /// <summary>
    /// Called by base class Collection&lt;T&gt; when the list is being cleared;
    /// raises a CollectionChanged event to any listeners.
    /// </summary>
    protected override void ClearItems()
    {
      if (Count == 0)
        return;

      CheckReentrancy();
      base.ClearItems();
      OnEssentialPropertiesChanged();
      OnCollectionReset();
    }

    /// <summary>
    /// Called by base class Collection&lt;T&gt; when an item is set in list;
    /// raises a CollectionChanged event to any listeners.
    /// </summary>
    protected override void SetItem(int index, T item)
    {
      if (Equals(this[index], item))
        return;

      CheckReentrancy();
      T originalItem = this[index];
      base.SetItem(index, item);

      OnIndexerPropertyChanged();
      OnCollectionChanged(NotifyCollectionChangedAction.Replace, originalItem, item, index);
    }

    /// <summary>
    /// Raise CollectionChanged event to any listeners.
    /// Properties/methods modifying this ObservableCollection will raise
    /// a collection changed event through this virtual method.
    /// </summary>
    /// <remarks>
    /// When overriding this method, either call its base implementation
    /// or call <see cref="BlockReentrancy"/> to guard against reentrant collection changes.
    /// </remarks>
    protected override void OnCollectionChanged(NotifyCollectionChangedEventArgs e)
    {
      if (_deferredEvents != null)
      {
        _deferredEvents.Add(e);
        return;
      }
      base.OnCollectionChanged(e);
    }

    protected virtual IDisposable DeferEvents() => new DeferredEventsCollection(this);

    #endregion Protected Methods


    //------------------------------------------------------
    //
    //  Private Methods
    //
    //------------------------------------------------------

    #region Private Methods

    /// <summary>
    /// Helper function to determine if a collection contains any elements.
    /// </summary>
    /// <param name="collection">The collection to evaluate.</param>
    /// <returns></returns>
    private static bool ContainsAny(IEnumerable<T> collection)
    {
      using (IEnumerator<T> enumerator = collection.GetEnumerator())
        return enumerator.MoveNext();
    }

    /// <summary>
    /// Helper to raise Count property and the Indexer property.
    /// </summary>
    private void OnEssentialPropertiesChanged()
    {
      OnPropertyChanged(EventArgsCache.CountPropertyChanged);
      OnIndexerPropertyChanged();
    }

    /// <summary>
    /// /// Helper to raise a PropertyChanged event for the Indexer property
    /// /// </summary>
    private void OnIndexerPropertyChanged() =>
      OnPropertyChanged(EventArgsCache.IndexerPropertyChanged);

    /// <summary>
    /// Helper to raise CollectionChanged event to any listeners
    /// </summary>
    private void OnCollectionChanged(NotifyCollectionChangedAction action, object oldItem, object newItem, int index) =>
      OnCollectionChanged(new NotifyCollectionChangedEventArgs(action, newItem, oldItem, index));

    /// <summary>
    /// Helper to raise CollectionChanged event with action == Reset to any listeners
    /// </summary>
    private void OnCollectionReset() =>
      OnCollectionChanged(EventArgsCache.ResetCollectionChanged);

    /// <summary>
    /// Helper to raise event for clustered action and clear cluster.
    /// </summary>
    /// <param name="followingItemIndex">The index of the item following the replacement block.</param>
    /// <param name="newCluster"></param>
    /// <param name="oldCluster"></param>
    //TODO should have really been a local method inside ReplaceRange(int index, int count, IEnumerable<T> collection, IEqualityComparer<T> comparer),
    //move when supported language version updated.
    private void OnRangeReplaced(int followingItemIndex, ICollection<T> newCluster, ICollection<T> oldCluster)
    {
      if (oldCluster == null || oldCluster.Count == 0)
      {
        Debug.Assert(newCluster == null || newCluster.Count == 0);
        return;
      }

      OnCollectionChanged(
          new NotifyCollectionChangedEventArgs(
              NotifyCollectionChangedAction.Replace,
              new List<T>(newCluster),
              new List<T>(oldCluster),
              followingItemIndex - oldCluster.Count));

      oldCluster.Clear();
      newCluster.Clear();
    }

    #endregion Private Methods

    //------------------------------------------------------
    //
    //  Private Types
    //
    //------------------------------------------------------

    #region Private Types
    private sealed class DeferredEventsCollection : List<NotifyCollectionChangedEventArgs>, IDisposable
    {
      private readonly ObservableRangeCollection<T> _collection;
      public DeferredEventsCollection(ObservableRangeCollection<T> collection)
      {
        Debug.Assert(collection != null);
        Debug.Assert(collection._deferredEvents == null);
        _collection = collection;
        _collection._deferredEvents = this;
      }

      public void Dispose()
      {
        _collection._deferredEvents = null;
        foreach (var args in this)
          _collection.OnCollectionChanged(args);
      }
    }

    #endregion Private Types

  }

  /// <remarks>
  /// To be kept outside <see cref="ObservableCollection{T}"/>, since otherwise, a new instance will be created for each generic type used.
  /// </remarks>
  internal static class EventArgsCache
  {
    internal static readonly PropertyChangedEventArgs CountPropertyChanged = new PropertyChangedEventArgs("Count");
    internal static readonly PropertyChangedEventArgs IndexerPropertyChanged = new PropertyChangedEventArgs("Item[]");
    internal static readonly NotifyCollectionChangedEventArgs ResetCollectionChanged = new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Reset);
  }
}

You can do it like this:

postData[postData.length] = { name: "variable_name", value: variable_value };

I have traversed hundred of pages, googled a lot but i have not found any exact solution. Finally this worked for me. Irrespective where you are in either controller or model. This code worked for me every where. Just use this

//Before executing your query
$db = Zend_Db_Table_Abstract::getDefaultAdapter();
$db->getProfiler()->setEnabled(true);
$profiler = $db->getProfiler();

// Execute your any of database query here like select, update, insert
//The code below must be after query execution
$query  = $profiler->getLastQueryProfile();
$params = $query->getQueryParams();
$querystr  = $query->getQuery();

foreach ($params as $par) {
    $querystr = preg_replace('/\\?/', "'" . $par . "'", $querystr, 1);
}
echo $querystr;

Finally this thing worked for me.

How about

apply(df, 1, function(r) any(r %in% c("M017", "M018")))

The ith element will be TRUE if the ith row contains one of the values, and FALSE otherwise. Or, if you want just the row numbers, enclose the above statement in which(...).

To request for internet permission in your code you must add these to your AndroidManifest.xml file

<uses-permission android:name="android.permission.INTERNET" />

For more detail explanation goto https://developer.android.com/training/basics/network-ops/connecting

tfe answered this question in another post on StackOverflow: Answered

Another method would be to use:

$(document).bind("touchmove",function(event){
  event.preventDefault();
});

But it may prevent some of the jquery mobile functionality from working properly.

You could do it this way but it leaves it as a varchar

declare @s varchar(50)

set @s = '2011-09-28 18:01:00'

select convert(varchar, cast(@s as datetime), 105) + RIGHT(@s, 9)

or

select convert(varchar(20), @s, 105)

If you can restrict it to just (Open Office XML format) *.xlsx files, then probably the most popular library would be EPPLus.

Bonus is, there are no other dependencies. Just install using nuget:

Install-Package EPPlus

Another way:

x=$'Some\nstring'
readarray -t y <<<"$x"

Or, if you don't have bash 4, the bash 3.2 equivalent:

IFS=$'\n' read -rd '' -a y <<<"$x"

You can also do it the way you were initially trying to use:

y=(${x//$'\n'/ })

This, however, will not function correctly if your string already contains spaces, such as 'line 1\nline 2'. To make it work, you need to restrict the word separator before parsing it:

IFS=$'\n' y=(${x//$'\n'/ })

...and then, since you are changing the separator, you don't need to convert the \n to space anymore, so you can simplify it to:

IFS=$'\n' y=($x)

This approach will function unless $x contains a matching globbing pattern (such as "*") - in which case it will be replaced by the matched file name(s). The read/readarray methods require newer bash versions, but work in all cases.

I don't know for how long this post has been here. But I stumbled upon similar problem now. Hence posting the solution so that it might help others.

#!/usr/bin/env perl
use strict;
use warnings;
use utf8;

use GD::Graph::pie;
use MIME::Base64;
my @data = (['A','O','S','I'],[3,16,12,47]);

my $mygraph = GD::Graph::pie->new(200, 200);
my $myimage = $mygraph->plot(\@data)->png;

print <<end_html;
<html><head><title>Current Stats</title></head>
<body>
<p align="center">
<img src="data:image/png;base64,
end_html

print encode_base64($myimage);

print <<end_html;
" style="width: 888px; height: 598px; border-width: 2px; border-style: solid;" /></p>
</body>
</html>

end_html

If it's maintainable to use those 2 properties, you could:

bool alreadyExists = myList.Any(x=> x.Foo=="ooo" && x.Bar == "bat");

Simply put inside your script :

source FILE

Or

. FILE # POSIX compliant

$ LANG=C help source
source: source filename [arguments]
Execute commands from a file in the current shell.

Read and execute commands from FILENAME in the current shell.  The
entries in $PATH are used to find the directory containing FILENAME.
If any ARGUMENTS are supplied, they become the positional parameters
when FILENAME is executed.

Exit Status:
Returns the status of the last command executed in FILENAME; fails if
FILENAME cannot be read.

include Jquery and Jquery UI plugins and try this

 $("#LeftSidePane").toggle('slide','left',400);

Spaces are used for separating Arguments. In your case C:\Program becomes argument. If your file path contains spaces then add Double quotation marks. Then cmd will recognize it as single argument.

If you ever run across code written purely for Internet Explorer you might see this:

var e = document.getElementById("ddlViewBy");
var strUser = e.options(e.selectedIndex).value;

Running the above in Firefox et al will give you an 'is not a function' error, because Internet Explorer allows you to get away with using () instead of []:

var e = document.getElementById("ddlViewBy");
var strUser = e.options[e.selectedIndex].value;

The correct way is to use square brackets.

Intro

I also encountered this problem and the solution proposed by @adamo was basically the right solution. However, I had to invest a lot of time in the details, which is why I am now writing a new answer in order to save this time for others.

Case

My case was as follows: There was a table that was filled with data using an app. Now a new entry had to be inserted manually via SQL. After that the sequence was out of sync and no more records could be inserted via the app.

Solution

As mentioned in the answer from @adamo, the sequence must be synchronized manually. For this purpose the name of the sequence is needed. For Postgres, the name of the sequence can be determined with the command PG_GET_SERIAL_SEQUENCE. Most examples use lower case table names. In my case the tables were created by an ORM middleware (like Hibernate or Entity Framework Core etc.) and their names all started with a capital letter.

In an e-mail from 2004 (link) I got the right hint.

(Let's assume for all examples, that Foo is the table's name and Foo_id the related column.)

Command to get the sequence name:

SELECT PG_GET_SERIAL_SEQUENCE('"Foo"', 'Foo_id');

So, the table name must be in double quotes, surrounded by single quotes.

1. Validate, that the sequence is out-of-sync

SELECT CURRVAL(PG_GET_SERIAL_SEQUENCE('"Foo"', 'Foo_id')) AS "Current Value", MAX("Foo_id") AS "Max Value" FROM "Foo";

When the Current Value is less than Max Value, your sequence is out-of-sync.

2. Correction

SELECT SETVAL((SELECT PG_GET_SERIAL_SEQUENCE('"Foo"', 'Foo_id')), (SELECT (MAX("Foo_id") + 1) FROM "Foo"), FALSE);

This might work for you:

printf "{new\nto\nlinux}" | paste -sd' '            
{new to linux}

or:

printf "{new\nto\nlinux}" | tr '\n' ' '            
{new to linux}

or:

printf "{new\nto\nlinux}" |sed -e ':a' -e '$!{' -e 'N' -e 'ba' -e '}' -e 's/\n/ /g'
{new to linux}

Simply paste the following code in your web.config file.

Noted that, you have to paste the following code under <system.webServer> tag

    <httpProtocol>  
    <customHeaders>  
     <add name="Access-Control-Allow-Origin" value="*" />  
     <add name="Access-Control-Allow-Headers" value="Content-Type" />  
     <add name="Access-Control-Allow-Methods" value="GET, POST, PUT, DELETE, OPTIONS" />  
    </customHeaders>  
  </httpProtocol>  

Well, you essentially create a JDialog, add your text components and make it visible. It might help if you narrow down which specific bit you're having trouble with.

Swift 5.1 use NSAttributedString.Key instead of NSAttributedStringKey

let test1Attributes:[NSAttributedString.Key: Any] = [.font : UIFont(name: "CircularStd-Book", size: 14)!]
let test2Attributes:[NSAttributedString.Key: Any] = [.font : UIFont(name: "CircularStd-Bold", size: 16)!]

let test1 = NSAttributedString(string: "\(greeting!) ", attributes:test1Attributes)
let test2 = NSAttributedString(string: firstName!, attributes:test2Attributes)
let text = NSMutableAttributedString()

text.append(test1)
text.append(test2)
return text

You have to close that application first. There is no way to delete it, if it's used by some application.

UnLock IT is a neat utility that helps you to take control of any file or folder when it is locked by some application or system. For every locked resource, you get a list of locking processes and can unlock it by terminating those processes. EMCO Unlock IT offers Windows Explorer integration that allows unlocking files and folders by one click in the context menu.

There's also Unlocker (not recommended, see Warning below), which is a free tool which helps locate any file locking handles running, and give you the option to turn it off. Then you can go ahead and do anything you want with those files.

Warning: The installer includes a lot of undesirable stuff. You're almost certainly better off with UnLock IT.

P.S: These instructions are in context of a Bash shell opened in Windows 10 Linux Subsystem and doesn't mention about sym-linking SSH keys generated in Windows with Bash on Ubuntu on Windows

1) Update your .bashrc by adding following in it

# Set up ssh-agent
SSH_ENV="$HOME/.ssh/environment"

function start_agent {
    echo "Initializing new SSH agent..."
    touch $SSH_ENV
    chmod 600 "${SSH_ENV}"
    /usr/bin/ssh-agent | sed 's/^echo/#echo/' >> "${SSH_ENV}"
    . "${SSH_ENV}" > /dev/null
    /usr/bin/ssh-add
}

# Source SSH settings, if applicable
if [ -f "${SSH_ENV}" ]; then
    . "${SSH_ENV}" > /dev/null
    kill -0 $SSH_AGENT_PID 2>/dev/null || {
        start_agent
    }
else
    start_agent
fi

2) Then run $ source ~/.bashrc to reload your config.

The above steps have been taken from https://github.com/abergs/ubuntuonwindows#2-start-an-bash-ssh-agent-on-launch

3) Create a SSH config file, if not present. Use following command for creating a new one: .ssh$ touch config

4) Add following to ~/.ssh/config

Host github.com-<YOUR_GITHUB_USERNAME> 
HostName github.com
User git
PreferredAuthentications publickey
IdentityFile ~/.ssh/id_work_gmail # path to your private key
AddKeysToAgent yes


Host csexperimental.abc.com
IdentityFile ~/.ssh/id_work_gmail # path to your private key
AddKeysToAgent yes

<More hosts and github configs can be added in similar manner mentioned above>

5) Add your key to SSH agent using command $ ssh-add ~/.ssh/id_work_gmail and then you should be able to connect to your github account or remote host using ssh. For e.g. in context of above code examples:

$ ssh github.com-<YOUR_GITHUB_USERNAME>

or

$ ssh <USER>@csexperimental.abc.com

This adding of key to the SSH agent should be required to be performed only one-time.

6) Now logout of your Bash session on Windows Linux Subsystem i.e. exit all the Bash consoles again and start a new console again and try to SSH to your Github Host or other host as configured in SSH config file and it should work without needing any extra steps.

Note:

• If you face Bad owner or permissions on ~/.ssh/config then update the permissions using the command chmod 600 ~/.ssh/config. Reference: https://serverfault.com/a/253314/98910

• For the above steps to work you will need OpenSSH v 7.2 and newer. If you have older one you can upgrade it using the steps mentioned at https://stackoverflow.com/a/41555393/936494

• The same details can be found in the gist Windows 10 Linux Subsystem SSH-agent issues

Thanks.

in short the difference between recursion memoization and Dynamic programming

Dynamic programming as name suggest is using the previous calculated value to dynamically construct the next new solution

Where to apply dynamic programming : If you solution is based on optimal substructure and overlapping sub problem then in that case using the earlier calculated value will be useful so you do not have to recompute it. It is bottom up approach. Suppose you need to calculate fib(n) in that case all you need to do is add the previous calculated value of fib(n-1) and fib(n-2)

Recursion : Basically subdividing you problem into smaller part to solve it with ease but keep it in mind it does not avoid re computation if we have same value calculated previously in other recursion call.

Memoization : Basically storing the old calculated recursion value in table is known as memoization which will avoid re-computation if its already been calculated by some previous call so any value will be calculated once. So before calculating we check whether this value has already been calculated or not if already calculated then we return the same from table instead of recomputing. It is also top down approach

try this:

DateTime.Now.DayOfWeek

If your using ASP.Net 5 (now known as ASP.Net Core v1) ensure in your project.json "commands" section for each site you are hosting that the Kestrel proxy listening port differs between sites, otherwise one site will work but the other will return a 504 gateway timeout.

 "commands": {
    "web": "Microsoft.AspNet.Server.Kestrel --server.urls http://localhost:5090"
  },

Answer for 2018:

The best way to do things like that is to use the Intersection Observer API.

The Intersection Observer API provides a way to asynchronously observe changes in the intersection of a target element with an ancestor element or with a top-level document's viewport.

Historically, detecting visibility of an element, or the relative visibility of two elements in relation to each other, has been a difficult task for which solutions have been unreliable and prone to causing the browser and the sites the user is accessing to become sluggish. Unfortunately, as the web has matured, the need for this kind of information has grown. Intersection information is needed for many reasons, such as:

• Lazy-loading of images or other content as a page is scrolled.
• Implementing "infinite scrolling" web sites, where more and more content is loaded and rendered as you scroll, so that the user doesn't have to flip through pages.
• Reporting of visibility of advertisements in order to calculate ad revenues.
• Deciding whether or not to perform tasks or animation processes based on whether or not the user will see the result.

Implementing intersection detection in the past involved event handlers and loops calling methods like Element.getBoundingClientRect() to build up the needed information for every element affected. Since all this code runs on the main thread, even one of these can cause performance problems. When a site is loaded with these tests, things can get downright ugly.

See the following code example:

var options = {
  root: document.querySelector('#scrollArea'),
  rootMargin: '0px',
  threshold: 1.0
}

var observer = new IntersectionObserver(callback, options);

var target = document.querySelector('#listItem');
observer.observe(target);

Most modern browsers support the IntersectionObserver, but you should use the polyfill for backward-compatibility.

This will get you the row count, but will leave the data reader at the end.

dataReader.Cast<object>().Count();

Try using the COLUMN command with the FORMAT option for that:

COLUMN COLUMN_NAME FORMAT 99.99
SELECT COLUMN_NAME FROM ....

You can use set with the /p argument:

SET /P variable=[promptString]

The /P switch allows you to set the value of a variable to a line of input entered by the user. Displays the specified promptString before reading the line of input. The promptString can be empty.

So, simply use something like

set /p Input=Enter some text: 

Later you can use that variable as argument to a command:

myCommand %Input%

Be careful though, that if your input might contain spaces it's probably a good idea to quote it:

myCommand "%Input%"