Personally, I use

if not (x is None):

which is understood immediately without ambiguity by every programmer, even those not expert in the Python syntax.

The first form, when used with an API that returns Boolean and compared against Boolean.FALSE, will never throw a NullPointerException.

The second form, when used with the java.util.Map interface, also, will never throw a NullPointerException because it returns a boolean and not a Boolean.

If you aren't concerned about consistent coding idioms, then you can pick the one you like, and in this concrete case it really doesn't matter. If you do care about consistent coding, then consider what you want to do when you check a Boolean that may be NULL.

The short-circuiting boolean operators (and, or) can't be overriden because there is no satisfying way to do this without introducing new language features or sacrificing short circuiting. As you may or may not know, they evaluate the first operand for its truth value, and depending on that value, either evaluate and return the second argument, or don't evaluate the second argument and return the first:

something_true and x -> x
something_false and x -> something_false
something_true or x -> something_true
something_false or x -> x

Note that the (result of evaluating the) actual operand is returned, not truth value thereof.

The only way to customize their behavior is to override __nonzero__ (renamed to __bool__ in Python 3), so you can affect which operand gets returned, but not return something different. Lists (and other collections) are defined to be "truthy" when they contain anything at all, and "falsey" when they are empty.

NumPy arrays reject that notion: For the use cases they aim at, two different notions of truth are common: (1) Whether any element is true, and (2) whether all elements are true. Since these two are completely (and silently) incompatible, and neither is clearly more correct or more common, NumPy refuses to guess and requires you to explicitly use .any() or .all().

& and | (and not, by the way) can be fully overriden, as they don't short circuit. They can return anything at all when overriden, and NumPy makes good use of that to do element-wise operations, as they do with practically any other scalar operation. Lists, on the other hand, don't broadcast operations across their elements. Just as mylist1 - mylist2 doesn't mean anything and mylist1 + mylist2 means something completely different, there is no & operator for lists.

Just put a '!' in front of the boolean expression

This one

if [[ !  $(cat /etc/passwd | grep "sysa") ]]
Then echo " something"
exit 2
fi

|| is the or operator.

if(A || B){ do something }

Try Logic Friday 1 It includes tools from the Univerity of California (Espresso and misII) and makes them usable with a GUI. You can enter boolean equations and truth tables as desired. It also features a graphical gate diagram input and output.

The minimization can be carried out two-level or multi-level. The two-level form yields a minimized sum of products. The multi-level form creates a circuit composed out of logical gates. The types of gates can be restricted by the user.

Your expression simplifies to C.

MS SQL 2008 can also use the string version of true or false...

select * from users where active = 'true'
-- or --
select * from users where active = 'false'

The official length according to the offical Apache docs is 8,192, but many folks have run into trouble at ~4,000.

MS Internet Explorer is usually the limiting factor anyway, as it caps the maximum URL size at 2,048.

set datestr=%date%
set result=%datestr:/=-%
@echo %result%
pause

1. Open your favorite text editor
2. Create a new file named whatever.h
3. Put your function prototypes in it

DONE.

Example whatever.h

#ifndef WHATEVER_H_INCLUDED
#define WHATEVER_H_INCLUDED
int f(int a);
#endif

Note: include guards (preprocessor commands) added thanks to luke. They avoid including the same header file twice in the same compilation. Another possibility (also mentioned on the comments) is to add #pragma once but it is not guaranteed to be supported on every compiler.

Example whatever.c

#include "whatever.h"

int f(int a) { return a + 1; }

And then you can include "whatever.h" into any other .c file, and link it with whatever.c's object file.

Like this:

sample.c

#include "whatever.h"

int main(int argc, char **argv)
{
    printf("%d\n", f(2)); /* prints 3 */
    return 0;
}

To compile it (if you use GCC):

$ gcc -c whatever.c -o whatever.o
$ gcc -c sample.c -o sample.o

To link the files to create an executable file:

$ gcc sample.o whatever.o -o sample

You can test sample:

$ ./sample
3
$

iOS 8. UIBarButtonItem with custom image. Tried many different ways, most of them were not helping. Max's solution, thesetTintColor was not changing to any color. I figured out this one myself, thought it will be of use to some one.

For Hiding:

[self.navigationItem.rightBarButtonItem setEnabled:NO];
[self.navigationItem.rightBarButtonItem setImage:nil];

For Showing:

[self.navigationItem.rightBarButtonItem setEnabled:YES];
[self.navigationItem.rightBarButtonItem setImage:image];

Use the following

1.) Choose the image you want to set in your title bar.
2.) Convert it to ".ico" format. (You can use the following link online) http://image.online-convert.com/convert-to-ico
3.) Save the file as "favicon.ico" in the same folder as your .html file
4.) Add this inside your head tag <link rel="shortcut icon" href="favicon.ico"/>

^[0-9]{1,2}[:.,-]?po$

Add any other allowable non-alphanumeric characters to the middle brackets to allow them to be parsed as well.

Sets are faster, morover you get more functions with sets, such as lets say you have two sets :

set1 = {"Harry Potter", "James Bond", "Iron Man"}
set2 = {"Captain America", "Black Widow", "Hulk", "Harry Potter", "James Bond"}

We can easily join two sets:

set3 = set1.union(set2)

Find out what is common in both:

set3 = set1.intersection(set2)

Find out what is different in both:

set3 = set1.difference(set2)

And much more! Just try them out, they are fun! Moreover if you have to work on the different values within 2 list or common values within 2 lists, I prefer to convert your lists to sets, and many programmers do in that way. Hope it helps you :-)

You cannot delete a variable if you declared it (with var x;) at the time of first use. However, if your variable x first appeared in the script without a declaration, then you can use the delete operator (delete x;) and your variable will be deleted, very similar to deleting an element of an array or deleting a property of an object.

If you are feeling particularly clever and don't want to use Regex:

char[] separators = new char[]{' ',';',',','\r','\t','\n'};

string s = "this;is,\ra\t\n\n\ntest";
string[] temp = s.Split(separators, StringSplitOptions.RemoveEmptyEntries);
s = String.Join("\n", temp);

You could wrap this in an extension method with little effort as well.

Edit: Or just wait 2 minutes and I'll end up writing it anyway :)

public static class ExtensionMethods
{
   public static string Replace(this string s, char[] separators, string newVal)
   {
       string[] temp;

       temp = s.Split(separators, StringSplitOptions.RemoveEmptyEntries);
       return String.Join( newVal, temp );
   }
}

And voila...

char[] separators = new char[]{' ',';',',','\r','\t','\n'};
string s = "this;is,\ra\t\n\n\ntest";

s = s.Replace(separators, "\n");

Locate the following file

C:\Users\[your name]\.android\adb_usb.ini

And make the following changes:

# ANDROID 3RD PARTY USB VENDOR ID LIST -- DO NOT EDIT.
# USE 'android update adb' TO GENERATE.
# 1 USB VENDOR ID PER LINE.
0x2207

I added 0x2207 to the file. This number is part of the hardware id, which can be found under the device's hardware information.

Mine was:

USB\VID_2207&PID_0010&MI_01

(I tried executing android update adb, but it did nothing.)

The iFrame attribute does not support percent in HTML5. It only supports pixels. http://www.w3schools.com/tags/att_iframe_height.asp

As explained above, using new Array(size) is somewhat dangerous. Instead of using it directly, place it inside an "array creator function". You can easily make sure that this function is bug-free and you avoid the danger of calling new Array(size) directly. Also, you can give it an optional default initial value. This createArray function does exactly that:

function createArray(size, defaultVal) {
    const arr = new Array(size);
    if (defaultVal !== undefined) {
        // optional default value
        for (let i = 0; i < size; ++i) {
            arr[i] = defaultVal;
        }
    }
    return arr;
}

If you want to redirect your webpage to another HTML FILE, just use as followed:

<meta http-equiv="refresh" content"2;otherpage.html">

2 being the seconds you want the client to wait before redirecting. Use "url=" only when it's an URL, to redirect to an HTML file just write the name after the ';'

If you want to only trigger validation when the input looses focus you can use onBlur

Trivia: React <17 listens to blur event and >=17 listens to focusout event.

There is a good explanation in the documentation of jQuery.fn.on.

In short:

Event handlers are bound only to the currently selected elements; they must exist on the page at the time your code makes the call to .on().

Thus in the following example #dataTable tbody tr must exist before the code is generated.

$("#dataTable tbody tr").on("click", function(event){
    console.log($(this).text());
});

If new HTML is being injected into the page, it is preferable to use delegated events to attach an event handler, as described next.

Delegated events have the advantage that they can process events from descendant elements that are added to the document at a later time. For example, if the table exists, but the rows are added dynamically using code, the following will handle it:

$("#dataTable tbody").on("click", "tr", function(event){
    console.log($(this).text());
});

In addition to their ability to handle events on descendant elements which are not yet created, another advantage of delegated events is their potential for much lower overhead when many elements must be monitored. On a data table with 1,000 rows in its tbody, the first code example attaches a handler to 1,000 elements.

A delegated-events approach (the second code example) attaches an event handler to only one element, the tbody, and the event only needs to bubble up one level (from the clicked tr to tbody).

Note: Delegated events do not work for SVG.

Teylyn's answer worked great for me, but I had to modify it a bit to get proper results. I want to provide an extended explanation for whoever would need it.

My setup was as follows:

• Sheet1: full data of 2014
• Sheet2: updated rows for 2015 in A1:D50, sorted by first column
• Sheet3: merged rows
• My data does not have a header row

I put the following formula in cell A1 of Sheet3:

=iferror(vlookup(Sheet1!A$1;Sheet2!$A$1:$D$50;column(A1);false);Sheet1!A1)

Read this as follows: Take the value of the first column in Sheet1 (old data). Look up in Sheet2 (updated rows). If present, output the value from the indicated column in Sheet2. On error, output the value for the current column of Sheet1.

Notes:

• In my version of the formula, ";" is used as parameter separator instead of ",". That is because I am located in Europe and we use the "," as decimal separator. Change ";" back to "," if you live in a country where "." is the decimal separator.

• A$1: means always take column 1 when copying the formula to a cell in a different column. $A$1 means: always take the exact cell A1, even when copying the formula to a different row or column.

After pasting the formula in A1, I extended the range to columns B, C, etc., until the full width of my table was reached. Because of the $-signs used, this gives the following formula's in cells B1, C1, etc.:

=IFERROR(VLOOKUP('Sheet1'!$A1;'Sheet2'!$A$1:$D$50;COLUMN(B1);FALSE);'Sheet1'!B1)
=IFERROR(VLOOKUP('Sheet1'!$A1;'Sheet2'!$A$1:$D$50;COLUMN(C1);FALSE);'Sheet1'!C1)

and so forth. Note that the lookup is still done in the first column. This is because VLOOKUP needs the lookup data to be sorted on the column where the lookup is done. The output column is however the column where the formula is pasted.

Next, select a rectangle in Sheet 3 starting at A1 and having the size of the data in Sheet1 (same number of rows and columns). Press Ctrl-D to copy the formulas of the first row to all selected cells.

Cells A2, A3, etc. will get these formulas:

=IFERROR(VLOOKUP('Sheet1'!$A2;'Sheet2'!$A$1:$D$50;COLUMN(A2);FALSE);'Sheet1'!A2)
=IFERROR(VLOOKUP('Sheet1'!$A3;'Sheet2'!$A$1:$D$50;COLUMN(A3);FALSE);'Sheet1'!A3)

Because of the use of $-signs, the lookup area is constant, but input data is used from the current row.

If you want to call your filter inside ng-options the code will be as follows:

ng-options="productSize as ( productSize | sizeWithPrice: product )  for productSize in productSizes track by productSize.id"

where the filter is sizeWithPriceFilter and it has two parameters product and productSize

.dex file

Compiled Android application code file.

Android programs are compiled into .dex (Dalvik Executable) files, which are in turn zipped into a single .apk file on the device. .dex files can be created automatically by Android, by translating the compiled applications written in the Java programming language.

I know this is a very old question, but I have added a few lines of code to yours and it trims whitespace from both ends.

void trim(std::string &line){

    auto val = line.find_last_not_of(" \n\r\t") + 1;

    if(val == line.size() || val == std::string::npos){
        val = line.find_first_not_of(" \n\r\t");
        line = line.substr(val);
    }
    else
        line.erase(val);
}

In a rails4 app it is possible to use the change method also for removing columns. The third param is the data_type and in the optional forth you can give options. It is a bit hidden in the section 'Available transformations' on the documentation .

class RemoveFieldFromTableName < ActiveRecord::Migration
  def change
    remove_column :table_name, :field_name, :data_type, {}
  end
end

For Android studio 3.4.2 go to View -> Tool Windows -> Logcat.

Try this one:

echo '' | sudo -S my_command

Consider Below Html

<html>
  <body>
    <input type ="text" id="username">
  </body>

</html>

so Absoulte path= html/body/input and Relative path = //*[@id="username"]

Disadvantage with Absolute xpath is maintenance is high if there is nay change made in html it may disturb the entire path and also sometime we need to write long absolute xpaths so relative xpaths are preferred

Validating + Formatting/Deriving Values

Setters let you to validate data and getters let you format or derive data. Objects allow you to encapsulate data and its validation and formatting code into a neat package that encourages DRY.

For example, consider the following simple class that contains a birth date.

class BirthDate {

    private $birth_date;

    public function getBirthDate($format='Y-m-d') {
        //format $birth_date ...
        //$birth_date = ...
        return $birth_date;
    }

    public function setBirthDate($birth_date) {                   
        //if($birth_date is not valid) throw an exception ...          
        $this->birth_date = $birth_date;
    }

    public function getAge() {
        //calculate age ...
        return $age;
    }

    public function getDaysUntilBirthday() {
        //calculate days until birth days
        return $days;
    }
}

You'll want to validate that the value being set is

• A valid date
• Not in the future

And you don't want to do this validation all over your application (or over multiple applications for that matter). Instead, it's easier to make the member variable protected or private (in order to make the setter the only access point) and to validate in the setter because then you'll know that the object contains a valid birth date no matter which part of the application the object came from and if you want to add more validation then you can add it in a single place.

You might want to add multiple formatters that operate on the same member variable i.e. getAge() and getDaysUntilBirthday() and you might want to enforce a configurable format in getBirthDate() depending on locale. Therefore I prefer consistently accessing values via getters as opposed to mixing $date->getAge() with $date->birth_date.

getters and setters are also useful when you extend objects. For example, suppose your application needed to allow 150+ year birth dates in some places but not in others. One way to solve the problem without repeating any code would be to extend the BirthDate object and put the additional validation in the setter.

class LivingBirthDate extends BirthDate {

    public function setBirthDate($birth_date) {
        //if $birth_date is greater than 150 years throw an exception
        //else pass to parent's setter
        return parent::setBirthDate($birth_date);
    }
}

Your code is valid (with one exception). It is required to have code between BEGIN and END.

Replace

--do some work

with

print ''

I think maybe you saw "END and not "AND"

The Address property of a cell can get this for you:

MsgBox Cells(1, 1).Address(RowAbsolute:=False, ColumnAbsolute:=False)

returns A1.

The other way around can be done with the Row and Column property of Range:

MsgBox Range("A1").Row & ", " & Range("A1").Column

returns 1,1.

I reached the point that I set, up to max_iter=1200000 on my LinearSVC classifier, but still the "ConvergenceWarning" was still present. I fix the issue by just setting dual=False and leaving max_iter to its default.

With LogisticRegression(solver='lbfgs') classifier, you should increase max_iter. Mine have reached max_iter=7600 before the "ConvergenceWarning" disappears when training with large dataset's features.

Microsoft also release the Microsoft Visual Studio 2015 Installer Projects Extension This is the same extension as the 2013 version but for Visual Studio 2015

PYTHON 3

Better to use the format option

user_name=input("Enter your name : )

points = 10

print ("Hello, {} your point is {} : ".format(user_name,points)

or declare the input as string and use

user_name=str(input("Enter your name : ))

points = 10

print("Hello, "+user_name+" your point is " +str(points))

Code:

$string = "9,[email protected],8";

$array  = explode(",", $string);

print_r($array);

$no = 1;
foreach ($array as $line) {
    echo $no . ". " . $line . PHP_EOL;
    $no++;
};

Online:

body, html, iframe { _x000D_
  width: 100% ;_x000D_
  height: 100% ;_x000D_
  overflow: hidden ;_x000D_
}

<iframe src="https://ideone.com/pGEAlb" ></iframe>

For me, as I was using pretty standard React fetch calls, this could have been fixed using some of the AWS Console and Lambda fixes above, but my Lambda returned the right headers (I was also using Proxy mode) and I needed to package my application up into a SAM Template, so I could not spend my time clicking around the console.

I noticed that all of the CORS stuff worked fine UNTIL I put Cognito Auth onto my application. I just basically went very slow doing a SAM package / SAM deploy with more and more configurations until it broke and it broke as soon as I added Auth to my API Gateway. I spent a whole day clicking around wonderful discussions like this one, looking for an easy fix, but then ended up having to actually read about what CORS was doing. I'll save you the reading and give you another easy fix (at least for me).

Here is an example of an API Gateway template that finally worked (YAML):

Resources:
  MySearchApi:
    Type: AWS::Serverless::Api
    Properties:
      StageName: 'Dev'
      Cors:
        AllowMethods: "'OPTIONS, GET'"
        AllowHeaders: "'Content-Type,X-Amz-Date,Authorization,X-Api-Key,X-Amz-Security-Token'"
        AllowOrigin: "'*'"
      Auth:
        DefaultAuthorizer: MyCognitoSearchAuth
        Authorizers:
          MyCognitoSearchAuth:
            UserPoolArn: "<my hardcoded user pool ARN>"
            AuthType: "COGNITO_USER_POOLS"
        AddDefaultAuthorizerToCorsPreflight: False

Note the AddDefaultAuthorizerToCorsPreflight at the bottom. This defaults to True if you DON'T have it in your template, as as far as I can tell from my reading. And, when True, it sort of blocks the normal OPTIONS behavior to announce what the Resource supports in terms of Allowed Origins. Once I explicitly added it and set it to False, all of my issues were resolved.

The implication is that if you are having this issue and want to diagnose it more completely, you should visit your Resources in API Gateway and check to see if your OPTIONS method contains some form of Authentication. Your GET or POST needs Auth, but if your OPTIONS has Auth enabled on it, then you might find yourself in this situation. If you are clicking around the AWS console, then try removing from OPTIONS, re-deploy, then test. If you are using SAM CLI, then try my fix above.

This error can also be caused by a javascript line like this one:

navi_elements.style.bottom = 20px;

Notice that the value is not a string.

What your looking for is the DefaultListModel - Dynamic String List Variable.

Here is a whole class that uses the DefaultListModel as though it were the TStringList of Delphi. The difference is that you can add Strings to the list without limitation and you have the same ability at getting a single entry by specifying the entry int.

FileName: StringList.java

package YOUR_PACKAGE_GOES_HERE;

//This is the StringList Class by i2programmer
//You may delete these comments
//This code is offered freely at no requirements
//You may alter the code as you wish
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.DefaultListModel;

public class StringList {

    public static String OutputAsString(DefaultListModel list, int entry) {
        return GetEntry(list, entry);
    }

    public static Object OutputAsObject(DefaultListModel list, int entry) {
        return GetEntry(list, entry);
    }

    public static int OutputAsInteger(DefaultListModel list, int entry) {
        return Integer.parseInt(list.getElementAt(entry).toString());
    }

    public static double OutputAsDouble(DefaultListModel list, int entry) {
        return Double.parseDouble(list.getElementAt(entry).toString());
    }

    public static byte OutputAsByte(DefaultListModel list, int entry) {
        return Byte.parseByte(list.getElementAt(entry).toString());
    }

    public static char OutputAsCharacter(DefaultListModel list, int entry) {
        return list.getElementAt(entry).toString().charAt(0);
    }

    public static String GetEntry(DefaultListModel list, int entry) {
        String result = "";
        result = list.getElementAt(entry).toString();
        return result;
    }

    public static void AddEntry(DefaultListModel list, String entry) {
        list.addElement(entry);
    }

    public static void RemoveEntry(DefaultListModel list, int entry) {
        list.removeElementAt(entry);
    }

    public static DefaultListModel StrToList(String input, String delimiter) {
        DefaultListModel dlmtemp = new DefaultListModel();
        input = input.trim();
        delimiter = delimiter.trim();
        while (input.toLowerCase().contains(delimiter.toLowerCase())) {
            int index = input.toLowerCase().indexOf(delimiter.toLowerCase());
            dlmtemp.addElement(input.substring(0, index).trim());
            input = input.substring(index + delimiter.length(), input.length()).trim();
        }
        return dlmtemp;
    }

    public static String ListToStr(DefaultListModel list, String delimiter) {
        String result = "";
        for (int i = 0; i < list.size(); i++) {
            result = list.getElementAt(i).toString() + delimiter;
        }
        result = result.trim();
        return result;
    }

    public static String LoadFile(String inputfile) throws IOException {
        int len;
        char[] chr = new char[4096];
        final StringBuffer buffer = new StringBuffer();
        final FileReader reader = new FileReader(new File(inputfile));
        try {
            while ((len = reader.read(chr)) > 0) {
                buffer.append(chr, 0, len);
            }
        } finally {
            reader.close();
        }
        return buffer.toString();
    }

    public static void SaveFile(String outputfile, String outputstring) {
        try {
            FileWriter f0 = new FileWriter(new File(outputfile));
            f0.write(outputstring);
            f0.flush();
            f0.close();
        } catch (IOException ex) {
            Logger.getLogger(StringList.class.getName()).log(Level.SEVERE, null, ex);
        }
    }
}

OutputAs methods are for outputting an entry as int, double, etc... so that you don't have to convert from string on the other side.

SaveFile & LoadFile are to save and load strings to and from files.

StrToList & ListToStr are to place delimiters between each entry.

ex. 1<>2<>3<>4<> if "<>" is the delimiter and 1 2 3 & 4 are the entries.

AddEntry & GetEntry are to add and get strings to and from the DefaultListModel.

RemoveEntry is to delete a string from the DefaultListModel.

You use the DefaultListModel instead of an array here like this:

DefaultListModel list = new DefaultListModel();
//now that you have a list, you can run it through the above class methods.

For multicolumn listbox extract data from any column of selected row by

 listboxControl.List(listboxControl.ListIndex,col_num)

where col_num is required column ( 0 for first column)

Shutting down the computer always kills the process for me.

Depending on the format of your new row, you might use tibble::add_row if your new row is simple and can specified in "value-pairs". Or you could use dplyr::bind_rows, "an efficient implementation of the common pattern of do.call(rbind, dfs)".

It's poor practice to force the user to do something they don't necessarily want to do. You can't ever really prevent them from closing the browser.

You can achieve a similar effect, though, by making a div on your current web page to layer over top the rest of your controls so your form is the only thing accessible.

Using LINQ, ofcourse. The below code would give you dictionary of item as string, and the count of each item in your sourc list.

var item2ItemCount = list.GroupBy(item => item).ToDictionary(x=>x.Key,x=>x.Count());

try:

names(newprice) <- c("premium", "change", "newprice")

Open Eclipse and do the following steps:

1. Window -> Preferences -> Expand General and click Workspace, text file encoding (near bottom) has an encoding chooser.
2. Select "Other" radio button -> Select UTF-8 from the drop down
3. Click Apply and OK button OR click simply OK button

Reading this original article on The Code Project will help you a lot: Visual Representation of SQL Joins.

Also check this post: SQL SERVER – Better Performance – LEFT JOIN or NOT IN?.

Find original one at: Difference between JOIN and OUTER JOIN in MySQL.

Some unixes have lockfile which is very similar to the already mentioned flock.

From the manpage:

lockfile can be used to create one or more semaphore files. If lock- file can't create all the specified files (in the specified order), it waits sleeptime (defaults to 8) seconds and retries the last file that didn't succeed. You can specify the number of retries to do until failure is returned. If the number of retries is -1 (default, i.e., -r-1) lockfile will retry forever.

Curl can post binary data from a file so I have been using process substitution and taking advantage of file descriptors whenever I need to post something nasty with curl and still want access to the vars in the current shell. Something like:

curl "http://localhost:8080" \
-H "Accept: application/json" \
-H "Content-Type:application/json" \
--data @<(cat <<EOF
{
  "me": "$USER",
  "something": $(date +%s)
  }
EOF
)

This winds up looking like --data @/dev/fd/<some number> which just gets processed like a normal file. Anyway if you wanna see it work locally just run nc -l 8080 first and in a different shell fire off the above command. You will see something like:

POST / HTTP/1.1
Host: localhost:8080
User-Agent: curl/7.43.0
Accept: application/json
Content-Type:application/json
Content-Length: 43

{  "me": "username",  "something": 1465057519  }

As you can see you can call subshells and whatnot as well as reference vars in the heredoc. Happy hacking hope this helps with the '"'"'""""'''""''.

For the Platform Independent Users or Windows users, what you can do is:

import runtime:

import (
    "runtime"
    "strings"
)

and then trim the string like this:

if runtime.GOOS == "windows" {
  input = strings.TrimRight(input, "\r\n")
} else {
  input = strings.TrimRight(input, "\n")
}

now you can compare it like that:

if strings.Compare(input, "a") == 0 {
  //....yourCode
}

This is a better approach when you're making use of STDIN on multiple platforms.

Explanation

This happens because on windows lines end with "\r\n" which is known as CRLF, but on UNIX lines end with "\n" which is known as LF and that's why we trim "\n" on unix based operating systems while we trim "\r\n" on windows.

Here is a version that works in all modern browsers. The key is using appearance:none which removes the default formatting. Since all of the formatting is gone, you have to add back in the arrow that visually differentiates the select from the input. Note: appearance is not supported in IE.

Working example: https://jsfiddle.net/gs2q1c7p/

select:not([multiple]) {_x000D_
    -webkit-appearance: none;_x000D_
    -moz-appearance: none;_x000D_
    background-position: right 50%;_x000D_
    background-repeat: no-repeat;_x000D_
    background-image: url(data:image/png;base64,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);_x000D_
    padding: .5em;_x000D_
    padding-right: 1.5em_x000D_
}_x000D_
_x000D_
#mySelect {_x000D_
    border-radius: 0_x000D_
}

<select id="mySelect">_x000D_
    <option>Option 1</option>_x000D_
    <option>Option 2</option>_x000D_
</select>

Based on Arno Tenkink's suggestion in the comments, here is an example using a svg instead of a png for the arrow icon.

select:not([multiple]) {_x000D_
    -webkit-appearance: none;_x000D_
    -moz-appearance: none;_x000D_
    background-position: right 50%;_x000D_
    background-repeat: no-repeat;_x000D_
    background-image: url('data:image/svg+xml;utf8,<?xml version="1.0" encoding="utf-8"?><!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"><svg xmlns="http://www.w3.org/2000/svg" width="14" height="12" version="1"><path d="M4 8L0 4h8z"/></svg>');_x000D_
    padding: .5em;_x000D_
    padding-right: 1.5em_x000D_
}_x000D_
_x000D_
#mySelect {_x000D_
    border-radius: 0_x000D_
}

<select id="mySelect">_x000D_
    <option>Option 1</option>_x000D_
    <option>Option 2</option>_x000D_
</select>

"Truncate doesn't log anything" is correct. I'd go further:

Truncate is not executed in the context of a transaction.

The speed advantage of truncate over delete should be obvious. That advantage ranges from trivial to enormous, depending on your situation.

However, I've seen truncate unintentionally break referential integrity, and violate other constraints. The power that you gain by modifying data outside a transaction has to be balanced against the responsibility that you inherit when you walk the tightrope without a net.

You have to first obtain the Range object. Also, getCell() will not return the value of the cell but instead will return a Range object of the cell. So, use something on the lines of

function email() {

// Opens SS by its ID

var ss = SpreadsheetApp.openById("0AgJjDgtUl5KddE5rR01NSFcxYTRnUHBCQ0stTXNMenc");

// Get the name of this SS

var name = ss.getName();  // Not necessary 

// Read cell 1,1 * Line below does't work *

// var data = Range.getCell(0, 0);
var sheet = ss.getSheetByName('Sheet1'); // or whatever is the name of the sheet 
var range = sheet.getRange(1,1); 
var data = range.getValue();

}

The hierarchy is Spreadsheet --> Sheet --> Range --> Cell.

Pickle is a module installed for both Python 2 and Python 3 by default. See the standard library for 3.6.4 and 2.7.

Also to prove what I am saying is correct try running this script:

import pickle
print(pickle.__doc__)

This will print out the Pickle documentation showing you all the functions (and a bit more) it provides.

Or you can start the integrated Python 3.6 Module Docs and check there.

As a rule of thumb: if you can import the module without an error being produced then it is installed

The reason for the No matching distribution found for pickle is because libraries for included packages are not available via pip because you already have them (I found this out yesterday when I tried to install an integrated package).

If it's running without errors but it doesn't work as expected I would think that you made a mistake somewhere (perhaps quickly check the functions you are using in the docs). Python is very informative with it's errors so we generally know if something is wrong.

It is Work for me:

language:{"infoEmpty": "No records available",}

For Excel 2013:

1. Open Blank Workbook.
2. Go to DATA tab.
3. Click button From Text in the General External Data section.
4. Select your CSV file.
5. Follow the Text Import Wizard. (in step 2, select the delimiter of your text)

http://blogmines.com/blog/how-to-import-text-file-in-excel-2013/

You could simply return a value from the function:

var response = 0;

function doSomething() {
    // some code
    return 10;
}
response = doSomething();

SNS is a distributed publish-subscribe system. Messages are pushed to subscribers as and when they are sent by publishers to SNS.

SQS is distributed queuing system. Messages are not pushed to receivers. Receivers have to poll or pull messages from SQS. Messages can't be received by multiple receivers at the same time. Any one receiver can receive a message, process and delete it. Other receivers do not receive the same message later. Polling inherently introduces some latency in message delivery in SQS unlike SNS where messages are immediately pushed to subscribers. SNS supports several end points such as email, SMS, HTTP end point and SQS. If you want unknown number and type of subscribers to receive messages, you need SNS.

You don't have to couple SNS and SQS always. You can have SNS send messages to email, SMS or HTTP end point apart from SQS. There are advantages to coupling SNS with SQS. You may not want an external service to make connections to your hosts (a firewall may block all incoming connections to your host from outside).

Your end point may just die because of heavy volume of messages. Email and SMS maybe not your choice of processing messages quickly. By coupling SNS with SQS, you can receive messages at your pace. It allows clients to be offline, tolerant to network and host failures. You also achieve guaranteed delivery. If you configure SNS to send messages to an HTTP end point or email or SMS, several failures to send message may result in messages being dropped.

SQS is mainly used to decouple applications or integrate applications. Messages can be stored in SQS for a short duration of time (maximum 14 days). SNS distributes several copies of messages to several subscribers. For example, let’s say you want to replicate data generated by an application to several storage systems. You could use SNS and send this data to multiple subscribers, each replicating the messages it receives to different storage systems (S3, hard disk on your host, database, etc.).

Here is a little more fun. I've found that very often NumPy does exactly what I wish it would do - sometimes it's faster for me to just try things than it is to read the docs. Actually a mixture of both is best.

I think your answer is fine (and it's OK to accept it if you like). This is just "extra".

import numpy as np

a = np.arange(4,10).reshape(2,3)

wh = np.where(a>7)
gt = a>7
x  = np.where(gt)

print "wh: ", wh
print "gt: ", gt
print "x:  ", x

gives:

wh:  (array([1, 1]), array([1, 2]))
gt:  [[False False False]
      [False  True  True]]
x:   (array([1, 1]), array([1, 2]))

... but:

print "a[wh]: ", a[wh]
print "a[gt]  ", a[gt]
print "a[x]:  ", a[x]

gives:

a[wh]:  [8 9]
a[gt]   [8 9]
a[x]:   [8 9]

As @nasreddine answered or you can use /d

cd /d d:\Docs\Java

For more help on the cd command use:

C:\Documents and Settings\kenny>help cd

Displays the name of or changes the current directory.

CHDIR [/D] [drive:][path] CHDIR [..] CD [/D] [drive:][path] CD [..]

.. Specifies that you want to change to the parent directory.

Type CD drive: to display the current directory in the specified drive. Type CD without parameters to display the current drive and directory.

Use the /D switch to change current drive in addition to changing current directory for a drive.

If Command Extensions are enabled CHDIR changes as follows:

The current directory string is converted to use the same case as the on disk names. So CD C:\TEMP would actually set the current directory to C:\Temp if that is the case on disk.

CHDIR command does not treat spaces as delimiters, so it is possible to CD into a subdirectory name that contains a space without surrounding the name with quotes. For example:

cd \winnt\profiles\username\programs\start menu

is the same as:

cd "\winnt\profiles\username\programs\start menu"

which is what you would have to type if extensions were disabled.

You could add it between your <head></head> tag like so:

<head>
  <link href="./node_modules/font-awesome/css/font-awesome.css" rel="stylesheet" type="text/css">
</head>

Or whatever your path to your node_modules is.

Edit (2017-06-26) - Disclaimer: THERE ARE BETTER ANSWERS. PLEASE DO NOT USE THIS METHOD. At the time of this original answer, good tools weren't as prevalent. With current build tools such as webpack or browserify, it probably doesn't make sense to use this answer. I can delete it, but I think it's important to highlight the various options one has and the possible dos and do nots.

I may be late to this one, but would help with the answer:

echo "COL_NAME1|COL_NAME2|COL_NAME3|COL_NAME4" > SAMPLE_Data.csv hive -e ' select distinct concat(COL_1, "|", COL_2, "|", COL_3, "|", COL_4) from table_Name where clause if required;' >> SAMPLE_Data.csv

In my experience

http://www.example.com

worked fine But, https required /* at the end

I haven't any personal experience with either of the following, but a simple search for a "Python [memory] profiler" yield:

• PySizer, "a memory profiler for Python," found at http://pysizer.8325.org/. However the page seems to indicate that the project hasn't been updated for a while, and refers to...

• Heapy, "support[ing] debugging and optimization regarding memory related issues in Python programs," found at http://guppy-pe.sourceforge.net/#Heapy.

Hope that helps.

You can also replace complicated condition with single method call to make it less evil in maintain.

You don't need a IF statement at all.

WHERE
    (IsNumeric(@OrderNumber) = 1 AND OrderNumber = @OrderNumber)
OR (IsNumeric(@OrderNumber) = 0 AND OrderNumber LIKE '%' + @OrderNumber + '%')

ANSI escape color codes :

Name            FG  BG
Black           30  40
Red             31  41
Green           32  42
Yellow          33  43
Blue            34  44
Magenta         35  45
Cyan            36  46
White           37  47
Bright Black    90  100
Bright Red      91  101
Bright Green    92  102
Bright Yellow   93  103
Bright Blue     94  104
Bright Magenta  95  105
Bright Cyan     96  106
Bright White    97  107

Sample code for C/C++ :

#include <iostream>
#include <string>

int main(int argc, char ** argv){
    
    printf("\n");
    printf("\x1B[31mTexting\033[0m\t\t");
    printf("\x1B[32mTexting\033[0m\t\t");
    printf("\x1B[33mTexting\033[0m\t\t");
    printf("\x1B[34mTexting\033[0m\t\t");
    printf("\x1B[35mTexting\033[0m\n");
    
    printf("\x1B[36mTexting\033[0m\t\t");
    printf("\x1B[36mTexting\033[0m\t\t");
    printf("\x1B[36mTexting\033[0m\t\t");
    printf("\x1B[37mTexting\033[0m\t\t");
    printf("\x1B[93mTexting\033[0m\n");
    
    printf("\033[3;42;30mTexting\033[0m\t\t");
    printf("\033[3;43;30mTexting\033[0m\t\t");
    printf("\033[3;44;30mTexting\033[0m\t\t");
    printf("\033[3;104;30mTexting\033[0m\t\t");
    printf("\033[3;100;30mTexting\033[0m\n");

    printf("\033[3;47;35mTexting\033[0m\t\t");
    printf("\033[2;47;35mTexting\033[0m\t\t");
    printf("\033[1;47;35mTexting\033[0m\t\t");
    printf("\t\t");
    printf("\n");

    return 0;
}

GCC :

g++ cpp_interactive_terminal.cpp -o cpp_interactive_terminal.cgi
chmod +x cpp_interactive_terminal.cgi
./cpp_interactive_terminal.cgi

the real solution is here, but you need to be familiar with PHP programing language. you must mix PHP and JAVASCRIPT orders in order to reach to your purpose.

pay attention to this :

<?php 
for($i=1;$i<=3;$i++){
echo "<script language='javascript' >
setTimeout(function(){alert('".$i."');},3000);  
</script>";
}
?> 

It exactly does what you want, but be careful about how to make ralation between PHP variables and JAVASCRIPT ones.

You could use a Data URI to supply the image data, for example:

<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">

<image width="20" height="20" xlink:href="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHwAAAABJRU5ErkJggg=="/>

</svg>

The image will go through all normal svg transformations.

But this technique has disadvantages, for example the image will not be cached by the browser

If you want to return in full TIMESTAMP format than try it: -

 SELECT TIMEDIFF(`call_end_time`, `call_start_time`) as diff from tablename;

return like

     diff
     - - -
    00:05:15

You can try use simple command line. bcdedit is what you need, just run cmd as administrator and type bcdedit or bcdedit \v, this doesn't work on XP, but hope it is not an issue.

Anyway for XP you can take a look into boot.ini file.

Epsilon is a difference between expected and actual values which you can accept thinking they are equal. You can set .1 for example.

For Bash, try

chsh -s $(which bash)

For zsh, try

chsh -s $(which zsh)

Okku's post worked for me in Edge. In order to get desired result on the iPhone, I had to use:

<thead class="sticky-top">

which didn't effect Edge.

...

[.]{1}

or

[.]{2}

?

Something that worked for me was simply separating data with a :

message.Body = FirstLine + ":" + SecondLine;

I hope this helps

If you wanted to keep it with just HTML and CSS you can use CSS Variables. Keep in mind, css variables aren't supported in IE.

<div class="thumb" style="--background: url('images/img.jpg')"></div> 

.thumb {
    background-image: var(--background);
}

Codepen: https://codepen.io/bruce13/pen/bJdoZW

According to Microsoft: Controller action return types in ASP.NET Core web API, scroll down almost to the bottom, you find the following blurb about 404 relating to an object not found in the database. Here they suggest that a 404 is appropriate for Empty Data.

Your CLASSPATH needs to know of the location of your HelloWorld class also.

In simple terms you should append dot . (means current directory) in the CLASSPATH if you are running javac and java commands from DOS prompt.

Small sample test.cmd

<# :
  @echo off
    powershell /nologo /noprofile /command ^
         "&{[ScriptBlock]::Create((cat """%~f0""") -join [Char[]]10).Invoke(@(&{$args}%*))}"
  exit /b
#>
Write-Host Hello, $args[0] -fo Green
#You programm...

            txtarea = new JTextArea(); 
    txtarea.setRows(25);
    txtarea.setColumns(25);
    txtarea.setWrapStyleWord(true);
    JScrollPane scroll = new JScrollPane (txtarea);
    panel2.add(scroll); //Object of Jpanel

Above given lines automatically shows you both horizontal & vertical Scrollbars..

the easiest way is using command line. Just type in directory of your .xsd file:

xjc myFile.xsd.

So, the java will generate all Pojos.

If you need a lot of decimal numbers, in this example 17, I share with you MySql code:

This is the calculate:

=(9/1147)*100

SELECT TRUNCATE(((CAST(9 AS DECIMAL(30,20))/1147)*100),17);

In addition to the answer given by @l0b0 I just had the situation where I needed to both keep any trailing newlines output by the script and check the script's return code. And the problem with l0b0's answer is that the 'echo x' was resetting $? back to zero... so I managed to come up with this very cunning solution:

RESULTX="$(./myscript; echo x$?)"
RETURNCODE=${RESULTX##*x}
RESULT="${RESULTX%x*}"

Highest voted answer uses Lodash _.chain function which is considered a bad practice now "Why using _.chain is a mistake."

Here is a fewliner that approaches the problem from functional programming perspective:

import tap from "lodash/fp/tap";
import flow from "lodash/fp/flow";
import groupBy from "lodash/fp/groupBy";

const map = require('lodash/fp/map').convert({ 'cap': false });

const result = flow(
      groupBy('color'),
      map((users, color) => ({color, users})),
      tap(console.log)
    )(input)

Where input is an array that you want to convert.

Setup 1: compile your own glibc without dedicated GCC and use it

Since it seems impossible to do just with symbol versioning hacks, let's go one step further and compile glibc ourselves.

This setup might work and is quick as it does not recompile the whole GCC toolchain, just glibc.

But it is not reliable as it uses host C runtime objects such as crt1.o, crti.o, and crtn.o provided by glibc. This is mentioned at: https://sourceware.org/glibc/wiki/Testing/Builds?action=recall&rev=21#Compile_against_glibc_in_an_installed_location Those objects do early setup that glibc relies on, so I wouldn't be surprised if things crashed in wonderful and awesomely subtle ways.

For a more reliable setup, see Setup 2 below.

Build glibc and install locally:

export glibc_install="$(pwd)/glibc/build/install"

git clone git://sourceware.org/git/glibc.git
cd glibc
git checkout glibc-2.28
mkdir build
cd build
../configure --prefix "$glibc_install"
make -j `nproc`
make install -j `nproc`

Setup 1: verify the build

test_glibc.c

#define _GNU_SOURCE
#include <assert.h>
#include <gnu/libc-version.h>
#include <stdatomic.h>
#include <stdio.h>
#include <threads.h>

atomic_int acnt;
int cnt;

int f(void* thr_data) {
    for(int n = 0; n < 1000; ++n) {
        ++cnt;
        ++acnt;
    }
    return 0;
}

int main(int argc, char **argv) {
    /* Basic library version check. */
    printf("gnu_get_libc_version() = %s\n", gnu_get_libc_version());

    /* Exercise thrd_create from -pthread,
     * which is not present in glibc 2.27 in Ubuntu 18.04.
     * https://stackoverflow.com/questions/56810/how-do-i-start-threads-in-plain-c/52453291#52453291 */
    thrd_t thr[10];
    for(int n = 0; n < 10; ++n)
        thrd_create(&thr[n], f, NULL);
    for(int n = 0; n < 10; ++n)
        thrd_join(thr[n], NULL);
    printf("The atomic counter is %u\n", acnt);
    printf("The non-atomic counter is %u\n", cnt);
}

Compile and run with test_glibc.sh:

#!/usr/bin/env bash
set -eux
gcc \
  -L "${glibc_install}/lib" \
  -I "${glibc_install}/include" \
  -Wl,--rpath="${glibc_install}/lib" \
  -Wl,--dynamic-linker="${glibc_install}/lib/ld-linux-x86-64.so.2" \
  -std=c11 \
  -o test_glibc.out \
  -v \
  test_glibc.c \
  -pthread \
;
ldd ./test_glibc.out
./test_glibc.out

The program outputs the expected:

gnu_get_libc_version() = 2.28
The atomic counter is 10000
The non-atomic counter is 8674

Command adapted from https://sourceware.org/glibc/wiki/Testing/Builds?action=recall&rev=21#Compile_against_glibc_in_an_installed_location but --sysroot made it fail with:

cannot find /home/ciro/glibc/build/install/lib/libc.so.6 inside /home/ciro/glibc/build/install

so I removed it.

ldd output confirms that the ldd and libraries that we've just built are actually being used as expected:

+ ldd test_glibc.out
        linux-vdso.so.1 (0x00007ffe4bfd3000)
        libpthread.so.0 => /home/ciro/glibc/build/install/lib/libpthread.so.0 (0x00007fc12ed92000)
        libc.so.6 => /home/ciro/glibc/build/install/lib/libc.so.6 (0x00007fc12e9dc000)
        /home/ciro/glibc/build/install/lib/ld-linux-x86-64.so.2 => /lib64/ld-linux-x86-64.so.2 (0x00007fc12f1b3000)

The gcc compilation debug output shows that my host runtime objects were used, which is bad as mentioned previously, but I don't know how to work around it, e.g. it contains:

COLLECT_GCC_OPTIONS=/usr/lib/gcc/x86_64-linux-gnu/7/../../../x86_64-linux-gnu/crt1.o

Setup 1: modify glibc

Now let's modify glibc with:

diff --git a/nptl/thrd_create.c b/nptl/thrd_create.c
index 113ba0d93e..b00f088abb 100644
--- a/nptl/thrd_create.c
+++ b/nptl/thrd_create.c
@@ -16,11 +16,14 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */

+#include <stdio.h>
+
 #include "thrd_priv.h"

 int
 thrd_create (thrd_t *thr, thrd_start_t func, void *arg)
 {
+  puts("hacked");
   _Static_assert (sizeof (thr) == sizeof (pthread_t),
                   "sizeof (thr) != sizeof (pthread_t)");

Then recompile and re-install glibc, and recompile and re-run our program:

cd glibc/build
make -j `nproc`
make -j `nproc` install
./test_glibc.sh

and we see hacked printed a few times as expected.

This further confirms that we actually used the glibc that we compiled and not the host one.

Tested on Ubuntu 18.04.

Setup 2: crosstool-NG pristine setup

This is an alternative to setup 1, and it is the most correct setup I've achieved far: everything is correct as far as I can observe, including the C runtime objects such as crt1.o, crti.o, and crtn.o.

In this setup, we will compile a full dedicated GCC toolchain that uses the glibc that we want.

The only downside to this method is that the build will take longer. But I wouldn't risk a production setup with anything less.

crosstool-NG is a set of scripts that downloads and compiles everything from source for us, including GCC, glibc and binutils.

Yes the GCC build system is so bad that we need a separate project for that.

This setup is only not perfect because crosstool-NG does not support building the executables without extra -Wl flags, which feels weird since we've built GCC itself. But everything seems to work, so this is only an inconvenience.

Get crosstool-NG and configure it:

git clone https://github.com/crosstool-ng/crosstool-ng
cd crosstool-ng
git checkout a6580b8e8b55345a5a342b5bd96e42c83e640ac5
export CT_PREFIX="$(pwd)/.build/install"
export PATH="/usr/lib/ccache:${PATH}"
./bootstrap
./configure --enable-local
make -j `nproc`
./ct-ng x86_64-unknown-linux-gnu
./ct-ng menuconfig

The only mandatory option that I can see, is making it match your host kernel version to use the correct kernel headers. Find your host kernel version with:

uname -a

which shows me:

4.15.0-34-generic

so in menuconfig I do:

• Operating System
  • Version of linux

so I select:

4.14.71

which is the first equal or older version. It has to be older since the kernel is backwards compatible.

Now you can build with:

env -u LD_LIBRARY_PATH time ./ct-ng build CT_JOBS=`nproc`

and now wait for about thirty minutes to two hours for compilation.

Setup 2: optional configurations

The .config that we generated with ./ct-ng x86_64-unknown-linux-gnu has:

CT_GLIBC_V_2_27=y

To change that, in menuconfig do:

• C-library
• Version of glibc

save the .config, and continue with the build.

Or, if you want to use your own glibc source, e.g. to use glibc from the latest git, proceed like this:

• Paths and misc options
  • Try features marked as EXPERIMENTAL: set to true
• C-library
  • Source of glibc
    • Custom location: say yes
    • Custom location
      • Custom source location: point to a directory containing your glibc source

where glibc was cloned as:

git clone git://sourceware.org/git/glibc.git
cd glibc
git checkout glibc-2.28

Setup 2: test it out

Once you have built he toolchain that you want, test it out with:

#!/usr/bin/env bash
set -eux
install_dir="${CT_PREFIX}/x86_64-unknown-linux-gnu"
PATH="${PATH}:${install_dir}/bin" \
  x86_64-unknown-linux-gnu-gcc \
  -Wl,--dynamic-linker="${install_dir}/x86_64-unknown-linux-gnu/sysroot/lib/ld-linux-x86-64.so.2" \
  -Wl,--rpath="${install_dir}/x86_64-unknown-linux-gnu/sysroot/lib" \
  -v \
  -o test_glibc.out \
  test_glibc.c \
  -pthread \
;
ldd test_glibc.out
./test_glibc.out

Everything seems to work as in Setup 1, except that now the correct runtime objects were used:

COLLECT_GCC_OPTIONS=/home/ciro/crosstool-ng/.build/install/x86_64-unknown-linux-gnu/bin/../x86_64-unknown-linux-gnu/sysroot/usr/lib/../lib64/crt1.o

Setup 2: failed efficient glibc recompilation attempt

It does not seem possible with crosstool-NG, as explained below.

If you just re-build;

env -u LD_LIBRARY_PATH time ./ct-ng build CT_JOBS=`nproc`

then your changes to the custom glibc source location are taken into account, but it builds everything from scratch, making it unusable for iterative development.

If we do:

./ct-ng list-steps

it gives a nice overview of the build steps:

Available build steps, in order:
  - companion_tools_for_build
  - companion_libs_for_build
  - binutils_for_build
  - companion_tools_for_host
  - companion_libs_for_host
  - binutils_for_host
  - cc_core_pass_1
  - kernel_headers
  - libc_start_files
  - cc_core_pass_2
  - libc
  - cc_for_build
  - cc_for_host
  - libc_post_cc
  - companion_libs_for_target
  - binutils_for_target
  - debug
  - test_suite
  - finish
Use "<step>" as action to execute only that step.
Use "+<step>" as action to execute up to that step.
Use "<step>+" as action to execute from that step onward.

therefore, we see that there are glibc steps intertwined with several GCC steps, most notably libc_start_files comes before cc_core_pass_2, which is likely the most expensive step together with cc_core_pass_1.

In order to build just one step, you must first set the "Save intermediate steps" in .config option for the intial build:

• Paths and misc options
  • Debug crosstool-NG
    • Save intermediate steps

and then you can try:

env -u LD_LIBRARY_PATH time ./ct-ng libc+ -j`nproc`

but unfortunately, the + required as mentioned at: https://github.com/crosstool-ng/crosstool-ng/issues/1033#issuecomment-424877536

Note however that restarting at an intermediate step resets the installation directory to the state it had during that step. I.e., you will have a rebuilt libc - but no final compiler built with this libc (and hence, no compiler libraries like libstdc++ either).

and basically still makes the rebuild too slow to be feasible for development, and I don't see how to overcome this without patching crosstool-NG.

Furthermore, starting from the libc step didn't seem to copy over the source again from Custom source location, further making this method unusable.

Bonus: stdlibc++

A bonus if you're also interested in the C++ standard library: How to edit and re-build the GCC libstdc++ C++ standard library source?

The easiest solution to make Angular 2+ application served from Amazon S3 and direct URLs working is to specify index.html both as Index and Error documents in S3 bucket configuration.

FYI - I could not find WcfTestClient.exe under any of the listed file paths. It turns out it needed to be installed by Visual Studio Installer. When you launch the installer and modify your version of VS, make sure Windows Communication Foundation is checked under Optional. It may seem obvious, but it wasn't to me and therefore might not be obvious to everyone else.

When I look at the solutions, it seems the problem is always something that prevents the spring library to be loaded. It could be a dependency problem or a deployment problem.

In my case, it was the maven repository that somehow got corrupt. What solved the problem was to remove the folder `C:\Users(my name).m2\repository' and rebuild.

Issues arise among before and after versions of Android 4.0 (API level 14).

from here I created my own solution.

@SuppressLint("NewApi")
@Override
protected void onResume()
{
    super.onResume();

    if (Build.VERSION.SDK_INT < 16)
    {
        // Hide the status bar
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
        // Hide the action bar
        getSupportActionBar().hide();
    }
    else
    {
        // Hide the status bar
        getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_FULLSCREEN);
        / Hide the action bar
        getActionBar().hide();
    }
}

I write this code in onResume() method because if you exit from your app and then you reopen it, the action bar remains active! (and so this fix the problem)

I hope it was helpful ;)

Whenever possible, you should avoid parsing the output of ls (see Greg's wiki on the subject). Basically, the output of ls will be ambiguous if there are funny characters in any of the filenames. It's also usually a waste of time. In this case, when you execute ls -d */, what happens is that the shell expands */ to a list of subdirectories (which is already exactly what you want), passes that list as arguments to ls -d, which looks at each one, says "yep, that's a directory all right" and prints it (in an inconsistent and sometimes ambiguous format). The ls command isn't doing anything useful!

Well, ok, it is doing one thing that's useful: if there are no subdirectories, */ will get left as is, ls will look for a subdirectory named "*", not find it, print an error message that it doesn't exist (to stderr), and not print the "*/" (to stdout).

The cleaner way to make an array of subdirectory names is to use the glob (*/) without passing it to ls. But in order to avoid putting "*/" in the array if there are no actual subdirectories, you should set nullglob first (again, see Greg's wiki):

shopt -s nullglob
array=(*/)
shopt -u nullglob # Turn off nullglob to make sure it doesn't interfere with anything later
echo "${array[@]}"  # Note double-quotes to avoid extra parsing of funny characters in filenames

If you want to print an error message if there are no subdirectories, you're better off doing it yourself:

if (( ${#array[@]} == 0 )); then
    echo "No subdirectories found" >&2
fi

This is from http://www.acm.uiuc.edu/webmonkeys/book/c_guide/2.13.html#rand:

Declaration:

void srand(unsigned int seed); 

This function seeds the random number generator used by the function rand. Seeding srand with the same seed will cause rand to return the same sequence of pseudo-random numbers. If srand is not called, rand acts as if srand(1) has been called.

Extending a class doesn't mean that you are instantiating the class. Actually, in your case you are creating an instance of the subclass.

I am pretty sure that abstract classes do not allow initiating. So, I'd say no: you can't instantiate an abstract class. But, you can extend it / inherit it.

You can't directly instantiate an abstract class. But it doesn't mean that you can't get an instance of class (not actully an instance of original abstract class) indirectly. I mean you can not instantiate the orginial abstract class, but you can:

1. Create an empty class
2. Inherit it from abstract class
3. Instantiate the dervied class

So you get access to all the methods and properties in an abstract class via the derived class instance.

As for how to represent a single apostrophe as a string in Python, you can simply surround it with double quotes ("'") or you can escape it inside single quotes ('\'').

To remove apostrophes from a string, a simple approach is to just replace the apostrophe character with an empty string:

>>> "didn't".replace("'", "")
'didnt'

You can use the REG command. From http://www.ss64.com/nt/reg.html:

Syntax:

   REG QUERY [ROOT\]RegKey /v ValueName [/s]
   REG QUERY [ROOT\]RegKey /ve  --This returns the (default) value

   REG ADD [ROOT\]RegKey /v ValueName [/t DataType] [/S Separator] [/d Data] [/f]
   REG ADD [ROOT\]RegKey /ve [/d Data] [/f]  -- Set the (default) value

   REG DELETE [ROOT\]RegKey /v ValueName [/f]
   REG DELETE [ROOT\]RegKey /ve [/f]  -- Remove the (default) value
   REG DELETE [ROOT\]RegKey /va [/f]  -- Delete all values under this key

   REG COPY  [\\SourceMachine\][ROOT\]RegKey [\\DestMachine\][ROOT\]RegKey

   REG EXPORT [ROOT\]RegKey FileName.reg
   REG IMPORT FileName.reg
   REG SAVE [ROOT\]RegKey FileName.hiv
   REG RESTORE \\MachineName\[ROOT]\KeyName FileName.hiv

   REG LOAD FileName KeyName
   REG UNLOAD KeyName

   REG COMPARE [ROOT\]RegKey [ROOT\]RegKey [/v ValueName] [Output] [/s]
   REG COMPARE [ROOT\]RegKey [ROOT\]RegKey [/ve] [Output] [/s]

Key:
   ROOT :
         HKLM = HKey_Local_machine (default)
         HKCU = HKey_current_user
         HKU  = HKey_users
         HKCR = HKey_classes_root

   ValueName : The value, under the selected RegKey, to edit.
               (default is all keys and values)

   /d Data   : The actual data to store as a "String", integer etc

   /f        : Force an update without prompting "Value exists, overwrite Y/N"

   \\Machine : Name of remote machine - omitting defaults to current machine.
                Only HKLM and HKU are available on remote machines.

   FileName  : The filename to save or restore a registry hive.

   KeyName   : A key name to load a hive file into. (Creating a new key)

   /S        : Query all subkeys and values.

   /S Separator : Character to use as the separator in REG_MULTI_SZ values
                  the default is "\0" 

   /t DataType  : REG_SZ (default) | REG_DWORD | REG_EXPAND_SZ | REG_MULTI_SZ

   Output    : /od (only differences) /os (only matches) /oa (all) /on (no output)

event.timeStamp doesn't work in Firefox. Returning false is non-standard, you should call event.preventDefault(). And while we're at it, always use braces with a control construct.

To sum up all of the previous answers, here is a plugin that does the job and works cross-browser.

jQuery.fn.preventDoubleSubmission = function() {

    var last_clicked, time_since_clicked;

    jQuery(this).bind('submit', function(event) {

        if(last_clicked) {
            time_since_clicked = jQuery.now() - last_clicked;
        }

        last_clicked = jQuery.now();

        if(time_since_clicked < 2000) {
            // Blocking form submit because it was too soon after the last submit.
            event.preventDefault();
        }

        return true;
    });
};

To address Kern3l, the timing method works for me simply because we're trying to stop a double-click of the submit button. If you have a very long response time to a submission, I recommend replacing the submit button or form with a spinner.

Completely blocking subsequent submissions of the form, as most of the above examples do, has one bad side-effect: if there is a network failure and they want to try to resubmit, they would be unable to do so and would lose the changes they made. This would definitely make an angry user.

I did it in a easier way , setEditable and setFocusable false. but you should check this.

How to replicate android:editable="false" in code?

function Do-SendKeys {
    param (
        $SENDKEYS,
        $WINDOWTITLE
    )
    $wshell = New-Object -ComObject wscript.shell;
    IF ($WINDOWTITLE) {$wshell.AppActivate($WINDOWTITLE)}
    Sleep 1
    IF ($SENDKEYS) {$wshell.SendKeys($SENDKEYS)}
}
Do-SendKeys -WINDOWTITLE Print -SENDKEYS '{TAB}{TAB}'
Do-SendKeys -WINDOWTITLE Print
Do-SendKeys -SENDKEYS '%{f4}'

Not a for each exactly, but you can do nested SQL

SELECT 
    distinct a.ID, 
    a.col2, 
    (SELECT 
        SUM(b.size) 
    FROM 
        tableb b 
    WHERE 
        b.id = a.col3)
FROM
    tablea a

At the time of writing this is the most recent version of objc.h:

/// Type to represent a boolean value.
#if (TARGET_OS_IPHONE && __LP64__)  ||  TARGET_OS_WATCH
#define OBJC_BOOL_IS_BOOL 1
typedef bool BOOL;
#else
#define OBJC_BOOL_IS_CHAR 1
typedef signed char BOOL; 
// BOOL is explicitly signed so @encode(BOOL) == "c" rather than "C" 
// even if -funsigned-char is used.
#endif

It means that on 64-bit iOS devices and on WatchOS BOOL is exactly the same thing as bool while on all other devices (OS X, 32-bit iOS) it is signed char and cannot even be overridden by compiler flag -funsigned-char

It also means that this example code will run differently on different platforms (tested it myself):

int myValue = 256;
BOOL myBool = myValue;
if (myBool) {
    printf("i'm 64-bit iOS");
} else {
    printf("i'm 32-bit iOS");
}

BTW never assign things like array.count to BOOL variable because about 0.4% of possible values will be negative.

You need to finish writing the memory stream then read the buffer back.

        using (var memoryStream = new MemoryStream())
        {
            using (var archive = new ZipArchive(memoryStream, ZipArchiveMode.Create))
            {
                var demoFile = archive.CreateEntry("foo.txt");

                using (var entryStream = demoFile.Open())
                using (var streamWriter = new StreamWriter(entryStream))
                {
                    streamWriter.Write("Bar!");
                }
            }

            using (var fileStream = new FileStream(@"C:\Temp\test.zip", FileMode.Create))
            {
                var bytes = memoryStream.GetBuffer();
                fileStream.Write(bytes,0,bytes.Length );
            }
        }

The answers from freedompeace, Kiyarash and Sam Vloeberghs:

.rar    application/x-rar-compressed, application/octet-stream
.zip    application/zip, application/octet-stream, application/x-zip-compressed, multipart/x-zip

I would do a check on the file name too. Here is how you could check if the file is a RAR or ZIP file. I tested it by creating a quick command line application.

<?php

if (isRarOrZip($argv[1])) {
    echo 'It is probably a RAR or ZIP file.';
} else {
    echo 'It is probably not a RAR or ZIP file.';
}

function isRarOrZip($file) {
    // get the first 7 bytes
    $bytes = file_get_contents($file, FALSE, NULL, 0, 7);
    $ext = strtolower(substr($file, - 4));

    // RAR magic number: Rar!\x1A\x07\x00
    // http://en.wikipedia.org/wiki/RAR
    if ($ext == '.rar' and bin2hex($bytes) == '526172211a0700') {
        return TRUE;
    }

    // ZIP magic number: none, though PK\003\004, PK\005\006 (empty archive), 
    // or PK\007\008 (spanned archive) are common.
    // http://en.wikipedia.org/wiki/ZIP_(file_format)
    if ($ext == '.zip' and substr($bytes, 0, 2) == 'PK') {
        return TRUE;
    }

    return FALSE;
}

Notice that it still won't be 100% certain, but it is probably good enough.

$ rar.exe l somefile.zip
somefile.zip is not RAR archive

But even WinRAR detects non RAR files as SFX archives:

$ rar.exe l somefile.srr
SFX Volume somefile.srr

I answered this question in a blog post: https://wscherphof.wordpress.com/2015/06/17/right-align-form-elements-with-css/ It refers to this fiddle: https://jsfiddle.net/wscherphof/9sfcw4ht/9/

Spoiler: float: right; is the right direction, but it takes just a little more attention to get neat results.

The number 0 in {0:X} refers to the position in the list or arguments. In this case 0 means use the first value, which is Blue. Use {1:X} for the second argument (Green), and so on.

colorstring = String.Format("#{0:X}{1:X}{2:X}{3:X}", Blue, Green, Red, Space);

The syntax for the format parameter is described in the documentation:

Format Item Syntax

Each format item takes the following form and consists of the following components:

{ index[,alignment][:formatString]}

The matching braces ("{" and "}") are required.

Index Component

The mandatory index component, also called a parameter specifier, is a number starting from 0 that identifies a corresponding item in the list of objects. That is, the format item whose parameter specifier is 0 formats the first object in the list, the format item whose parameter specifier is 1 formats the second object in the list, and so on.

Multiple format items can refer to the same element in the list of objects by specifying the same parameter specifier. For example, you can format the same numeric value in hexadecimal, scientific, and number format by specifying a composite format string like this: "{0:X} {0:E} {0:N}".

Each format item can refer to any object in the list. For example, if there are three objects, you can format the second, first, and third object by specifying a composite format string like this: "{1} {0} {2}". An object that is not referenced by a format item is ignored. A runtime exception results if a parameter specifier designates an item outside the bounds of the list of objects.

Alignment Component

The optional alignment component is a signed integer indicating the preferred formatted field width. If the value of alignment is less than the length of the formatted string, alignment is ignored and the length of the formatted string is used as the field width. The formatted data in the field is right-aligned if alignment is positive and left-aligned if alignment is negative. If padding is necessary, white space is used. The comma is required if alignment is specified.

Format String Component

The optional formatString component is a format string that is appropriate for the type of object being formatted. Specify a standard or custom numeric format string if the corresponding object is a numeric value, a standard or custom date and time format string if the corresponding object is a DateTime object, or an enumeration format string if the corresponding object is an enumeration value. If formatString is not specified, the general ("G") format specifier for a numeric, date and time, or enumeration type is used. The colon is required if formatString is specified.

Note that in your case you only have the index and the format string. You have not specified (and do not need) an alignment component.

In my experience, most often this error message means that you have put an accidental closing brace somewhere, leaving the rest of your statements outside the function.

Example:

function a() {
    if (global_block) //syntax error is actually here - missing opening brace
       return;
    } //this unintentionally ends the function

    if (global_somethingelse) {
       //Chrome will show the error occurring here, 
       //but actually the error is in the previous statement
       return; 
    }

    //do something
}

@aisbaa's answer works if you don't care when the environment variable was declared. If you want the environment variable, even if it has been declared inside of an exec /bin/bash session, use something like:

IFS="=" read -a out <<< $(docker exec container /bin/bash -c "env | grep ENV_VAR" 2>&1)

It's not very pretty, but it gets the job done.

To then get the value, use:

echo ${out[1]}

I think there is a way to do it at definition stage like this

create table employee( id int identity, name varchar(50), primary key(id) ).. I am trying to see if there is a way to alter an existing table and make the column as Identity which does not look possible theoretically (as the existing values might need modification)

If you are looking to do an exact match, use the following syntax: (param)?.

Eg.

<Route path={`my/(exact)?/path`} component={MyComponent} />

The nice thing about this is that you'll have props.match to play with, and you don't need to worry about checking the value of the optional parameter:

{ props: { match: { "0": "exact" } } }

I found a few:

http://github.com/ssoroka/ansi/tree/master

Examples:

puts ANSI.color(:red) { "hello there" }
puts ANSI.color(:green) + "Everything is green now" + ANSI.no_color

http://flori.github.com/term-ansicolor/

Examples:

print red, bold, "red bold", reset, "\n"
print red(bold("red bold")), "\n"
print red { bold { "red bold" } }, "\n"

http://github.com/sickill/rainbow

Example:

puts "this is red".foreground(:red) + " and " + "this on yellow bg".background(:yellow) + " and " + "even bright underlined!".underline.bright

If you are on Windows you may need to do a "gem install win32console" to enable support for colors.

Also the article Colorizing console Ruby-script output is useful if you need to create your own gem. It explains how to add ANSI coloring to strings. You can use this knowledge to wrap it in some class that extends string or something.

inetmgr then come to Application pool->Advanced setting of your pool-> will have the option "Enable 32-Bit Applications" set to true; and restart IIS. check again.!

In general, it's not going to have enough of an impact to worry about, particularly since it's an intranet app and not a general-use Internet app. In particular, since it's intranet, SEO isn't a concern, since your intranet shouldn't be accessible to search engines. (and if it is, it isn't an intranet app).

And any framework worth it's salt either already has a default way to do this, or is fairly easy to change how it deals with multi-word URL components, so I wouldn't worry about it too much.

That said, here's how I see the various options:

Hyphen

• The biggest danger for hyphens is that the same character (typically) is also used for subtraction and numerical negation (ie. minus or negative).
• Hyphens feel awkward in URL components. They seem to only make sense at the end of a URL to separate words in the title of an article. Or, for example, the title of a Stack Overflow question that is added to the end of a URL for SEO and user-clarity purposes.

Underscore

• Again, they feel wrong in URL components. They break up the flow (and beauty/simplicity) of a URL, since they essentially add a big, heavy apparent space in the middle of a clean, flowing URL.
• They tend to blend in with underlines. If you expect your users to copy-paste your URLs into MS Word or other similar text-editing programs, or anywhere else that might pick up on a URL and style it with an underline (like links traditionally are), then you might want to avoid underscores as word separators. Particularly when printed, an underlined URL with underscores tends to look like it has spaces in it instead of underscores.

CamelCase

• By far my favorite, since it makes the URLs seem to flow better and doesn't have any of the faults that the previous two options do.
• Can be slightly harder to read for people that have a hard time differentiating upper-case from lower-case, but this shouldn't be much of an issue in a URL, because most "words" should be URL components and separated by a / anyways. If you find that you have a URL component that is more than 2 "words" long, you should probably try to find a better name for that concept.
• It does have a possible issue with case sensitivity, but most platforms can be adjusted to be either case-sensitive or case-insensitive. Any it's only really an issue for 2 cases: a.) humans typing the URL in, and b.) Programmers (since we are not human) typing the URL in. Typos are always a problem, regardless of case sensitivity, so this is no different that all one case.

Or you can just use this simple 2 liner code :)

if (e.KeyCode == Keys.Enter)
            button1.PerformClick();

MVC's anti-forgery support writes a unique value to an HTTP-only cookie and then the same value is written to the form. When the page is submitted, an error is raised if the cookie value doesn't match the form value.

It's important to note that the feature prevents cross site request forgeries. That is, a form from another site that posts to your site in an attempt to submit hidden content using an authenticated user's credentials. The attack involves tricking the logged in user into submitting a form, or by simply programmatically triggering a form when the page loads.

The feature doesn't prevent any other type of data forgery or tampering based attacks.

To use it, decorate the action method or controller with the ValidateAntiForgeryToken attribute and place a call to @Html.AntiForgeryToken() in the forms posting to the method.

You can change colors UITabBarItem by storyboard but if you want to change colors by code it's very easy:

// Use this for change color of selected bar

   [[UITabBar appearance] setTintColor:[UIColor blueColor]];

// This for change unselected bar (iOS 10)

   [[UITabBar appearance] setUnselectedItemTintColor:[UIColor yellowColor]];

// And this line for change color of all tabbar

   [[UITabBar appearance] setBarTintColor:[UIColor whiteColor]];

Based on LukeP's answer, and add some methods to setup timeout and requireSSL cooperated with Web.config.

The references links

• MSDN, Explained: Forms Authentication in ASP.NET 2.0
• MSDN, FormsAuthentication Class
• SO, .net Access Forms authentication “timeout” value in code

Modified Codes of LukeP

1, Set timeout based on Web.Config. The FormsAuthentication.Timeout will get the timeout value, which is defined in web.config. I wrapped the followings to be a function, which return a ticket back.

int version = 1;
DateTime now = DateTime.Now;

// respect to the `timeout` in Web.config.
TimeSpan timeout = FormsAuthentication.Timeout;
DateTime expire = now.Add(timeout);
bool isPersist = false;

FormsAuthenticationTicket ticket = new FormsAuthenticationTicket(
     version,          
     name,
     now,
     expire,
     isPersist,
     userData);

2, Configure the cookie to be secure or not, based on the RequireSSL configuration.

HttpCookie faCookie = new HttpCookie(FormsAuthentication.FormsCookieName, encTicket);
// respect to `RequreSSL` in `Web.Config`
bool bSSL = FormsAuthentication.RequireSSL;
faCookie.Secure = bSSL;

If you don't want to lose the columns you shift past the end of your dataframe, simply append the required number first:

    offset = 5
    DF = DF.append([np.nan for x in range(offset)])
    DF = DF.shift(periods=offset)
    DF = DF.reset_index() #Only works if sequential index

A string like "Hello World" to hex format: 48656C6C6F20576F726C64.

Ah, here you go:

#include <string>

std::string string_to_hex(const std::string& input)
{
    static const char hex_digits[] = "0123456789ABCDEF";

    std::string output;
    output.reserve(input.length() * 2);
    for (unsigned char c : input)
    {
        output.push_back(hex_digits[c >> 4]);
        output.push_back(hex_digits[c & 15]);
    }
    return output;
}

#include <stdexcept>

int hex_value(unsigned char hex_digit)
{
    static const signed char hex_values[256] = {
        -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
        -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
        -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
         0,  1,  2,  3,  4,  5,  6,  7,  8,  9, -1, -1, -1, -1, -1, -1,
        -1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1,
        -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
        -1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1,
        -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
        -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
        -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
        -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
        -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
        -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
        -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
        -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
        -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    };
    int value = hex_values[hex_digit];
    if (value == -1) throw std::invalid_argument("invalid hex digit");
    return value;
}

std::string hex_to_string(const std::string& input)
{
    const auto len = input.length();
    if (len & 1) throw std::invalid_argument("odd length");

    std::string output;
    output.reserve(len / 2);
    for (auto it = input.begin(); it != input.end(); )
    {
        int hi = hex_value(*it++);
        int lo = hex_value(*it++);
        output.push_back(hi << 4 | lo);
    }
    return output;
}

(This assumes that a char has 8 bits, so it's not very portable, but you can take it from here.)

Your current implementation is correct. The suggested is not possible but the pseudo code would be implemented with multiple equal() calls and ||.

You can use Timer

Timer timer = new Timer();

timer.schedule( new TimerTask() {
    public void run() {
       // do your work 
    }
 }, 0, 60*1000);

When the times comes

  timer.cancel();

To shut it down.

create java application in which you define two threads namely t1 and t2, thread t1 will generate random number 0 and 1 (simulate toss a coin ). 0 means head and one means tail. the other thread t2 will do the same t1 and t2 will repeat this loop 100 times and finally your application should determine how many times t1 guesses the number generated by t2 and then display the score. for example if thread t1 guesses 20 number out of 100 then the score of t1 is 20/100 =0.2 if t1 guesses 100 numbers then it gets score 1 and so on

It sounds like you probably want to get ahold of json-lib:

http://json-lib.sourceforge.net/

Douglas Crockford is the guy who invented JSON; his Java library is here:

http://www.json.org/java/

It sounds like the folks at json-lib picked up where Crockford left off. Both fully support JSON, both use (compatible, as far as I can tell) JSONObject, JSONArray and JSONFunction constructs.

'Hope that helps ..

Here is an implementation of the Permutation in Java:

Permutation - Java

You should have a check on it!

Edit: code pasted below to protect against link-death:

// Permute.java -- A class generating all permutations

import java.util.Iterator;
import java.util.NoSuchElementException;
import java.lang.reflect.Array;

public class Permute implements Iterator {

   private final int size;
   private final Object [] elements;  // copy of original 0 .. size-1
   private final Object ar;           // array for output,  0 .. size-1
   private final int [] permutation;  // perm of nums 1..size, perm[0]=0

   private boolean next = true;

   // int[], double[] array won't work :-(
   public Permute (Object [] e) {
      size = e.length;
      elements = new Object [size];    // not suitable for primitives
      System.arraycopy (e, 0, elements, 0, size);
      ar = Array.newInstance (e.getClass().getComponentType(), size);
      System.arraycopy (e, 0, ar, 0, size);
      permutation = new int [size+1];
      for (int i=0; i<size+1; i++) {
         permutation [i]=i;
      }
   }

   private void formNextPermutation () {
      for (int i=0; i<size; i++) {
         // i+1 because perm[0] always = 0
         // perm[]-1 because the numbers 1..size are being permuted
         Array.set (ar, i, elements[permutation[i+1]-1]);
      }
   }

   public boolean hasNext() {
      return next;
   }

   public void remove() throws UnsupportedOperationException {
      throw new UnsupportedOperationException();
   }

   private void swap (final int i, final int j) {
      final int x = permutation[i];
      permutation[i] = permutation [j];
      permutation[j] = x;
   }

   // does not throw NoSuchElement; it wraps around!
   public Object next() throws NoSuchElementException {

      formNextPermutation ();  // copy original elements

      int i = size-1;
      while (permutation[i]>permutation[i+1]) i--;

      if (i==0) {
         next = false;
         for (int j=0; j<size+1; j++) {
            permutation [j]=j;
         }
         return ar;
      }

      int j = size;

      while (permutation[i]>permutation[j]) j--;
      swap (i,j);
      int r = size;
      int s = i+1;
      while (r>s) { swap(r,s); r--; s++; }

      return ar;
   }

   public String toString () {
      final int n = Array.getLength(ar);
      final StringBuffer sb = new StringBuffer ("[");
      for (int j=0; j<n; j++) {
         sb.append (Array.get(ar,j).toString());
         if (j<n-1) sb.append (",");
      }
      sb.append("]");
      return new String (sb);
   }

   public static void main (String [] args) {
      for (Iterator i = new Permute(args); i.hasNext(); ) {
         final String [] a = (String []) i.next();
         System.out.println (i);
      }
   }
}

in the html :

<div ng-repeat="t in getTimes(4)">text</div>

and in the controller :

$scope.getTimes=function(n){
     return new Array(n);
};

http://plnkr.co/edit/j5kNLY4Xr43CzcjM1gkj

EDIT :

with angularjs > 1.2.x

<div ng-repeat="t in getTimes(4) track by $index">TEXT</div>

import re

mystr = "I want to Remove all white \t spaces, new lines \n and tabs \t"
print re.sub(r"\W", "", mystr)

Output : IwanttoRemoveallwhitespacesnewlinesandtabs

The solution is quite simple ... you're reading getchar() which gives you the first character in the input buffer, and scanf just parsed it (really don't know why) to an integer, if you just forget the getchar for a second, it will read the full buffer until a newline char.

printf("> ");
int x;
scanf("%d", &x);
printf("got the number: %d", x);

Outputs

> [prompt expecting input, lets write:] 1234 [Enter]
got the number: 1234

For me the issue was due to single quotes for the name/value pair... data: "{'Name':'AA'}"

Once I changed it to double quotes for the name/value pair it works fine... data: '{"Name":"AA"}' or like this... data: "{\"Name\":\"AA\"}"

Below code works for me

first I defined the partnerTypesMap like below in the server side,

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

after adding values to it I added the object to model,

model.addAttribute("partnerTypesMap", partnerTypes);

When rendering the page I use below foreach to print them one by one.

<c:forEach items="${partnerTypesMap}" var="partnerTypesMap">
      <form:option value="${partnerTypesMap['value']}">${partnerTypesMap['key']}</form:option>
</c:forEach>

var a_href = $('div.cpt').find('h2 a').attr('href');

should be

var a_href = $(this).find('div.cpt').find('h2 a').attr('href');

In the first line, your query searches the entire document. In the second, the query starts from your tr element and only gets the element underneath it. (You can combine the finds if you like, I left them separate to illustrate the point.)

This is how I would go about it.

$posts = $this->post->orderBy('id', 'DESC')->get();

C++20 will add constexpr strings and vectors

The following proposal has been accepted apparently: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0980r0.pdf and it adds constructors such as:

// 20.3.2.2, construct/copy/destroy
constexpr
basic_string() noexcept(noexcept(Allocator())) : basic_string(Allocator()) { }
constexpr
explicit basic_string(const Allocator& a) noexcept;
constexpr
basic_string(const basic_string& str);
constexpr
basic_string(basic_string&& str) noexcept;

in addition to constexpr versions of all / most methods.

There is no support as of GCC 9.1.0, the following fails to compile:

#include <string>

int main() {
    constexpr std::string s("abc");
}

with:

g++-9 -std=c++2a main.cpp

with error:

error: the type ‘const string’ {aka ‘const std::__cxx11::basic_string<char>’} of ‘constexpr’ variable ‘s’ is not literal

std::vector discussed at: Cannot create constexpr std::vector

Tested in Ubuntu 19.04.

If you want to select the type of console, you can write this in the file "keybinding.json" (this file can be found in the following path "File-> Preferences-> Keyboard Shortcuts") `

//with this you can select what type of console you want
{
    "key": "ctrl+shift+t",
    "command": "shellLauncher.launch"
},

//and this will help you quickly change console
{ 
    "key": "ctrl+shift+j", 
    "command": "workbench.action.terminal.focusNext" 
},
{
    "key": "ctrl+shift+k", 
    "command": "workbench.action.terminal.focusPrevious" 
}`

If I understood you right you want to have sheet1!A1 in sheet2!A1, sheet1!A2 in sheet2!A2,...right?

It might not be the best way but you may type the following

=IF(sheet1!A1<>"",sheet1!A1,"")

and drag it down to the maximum number of rows you expect.

More accurately, your mod1 and lib directories are not modules, they are packages. The file mod11.py is a module.

Python does not automatically import subpackages or modules. You have to explicitly do it, or "cheat" by adding import statements in the initializers.

>>> import lib
>>> dir(lib)
['__builtins__', '__doc__', '__file__', '__name__', '__package__', '__path__']
>>> import lib.pkg1
>>> import lib.pkg1.mod11
>>> lib.pkg1.mod11.mod12()
mod12

An alternative is to use the from syntax to "pull" a module from a package into you scripts namespace.

>>> from lib.pkg1 import mod11

Then reference the function as simply mod11.mod12().

Add inputType to edittext and on enter it will go the next edittext

android:inputType="text"
android:inputType="textEmailAddress"
android:inputType="textPassword" 

and many more.

inputType=textMultiLine does not go to the next edittext on enter

In addition to the above, you can do this (where "YourListObjectName" is the name of your table):

Dim LO As ListObject
Set LO = ActiveSheet.ListObjects("YourListObjectName")

But I think that only works if you want to reference a list object that's on the active sheet.

I found your question because I wanted to refer to a list object (a table) on one worksheet that a pivot table on a different worksheet refers to. Since list objects are part of the Worksheets collection, you have to know the name of the worksheet that list object is on in order to refer to it. So to get the name of the worksheet that the list object is on, I got the name of the pivot table's source list object (again, a table) and looped through the worksheets and their list objects until I found the worksheet that contained the list object I was looking for.

Public Sub GetListObjectWorksheet()
' Get the name of the worksheet that contains the data
' that is the pivot table's source data.

    Dim WB As Workbook
    Set WB = ActiveWorkbook

    ' Create a PivotTable object and set it to be
    ' the pivot table in the active cell:
    Dim PT As PivotTable
    Set PT = ActiveCell.PivotTable

    Dim LO As ListObject
    Dim LOWS As Worksheet

    ' Loop through the worksheets and each worksheet's list objects
    ' to find the name of the worksheet that contains the list object
    ' that the pivot table uses as its source data:
    Dim WS As Worksheet
    For Each WS In WB.Worksheets
        ' Loop through the ListObjects in each workshet:
        For Each LO In WS.ListObjects
            ' If the ListObject's name is the name of the pivot table's soure data,
            ' set the LOWS to be the worksheet that contains the list object:
            If LO.Name = PT.SourceData Then
                Set LOWS = WB.Worksheets(LO.Parent.Name)
            End If
        Next LO
    Next WS

    Debug.Print LOWS.Name

End Sub

Maybe someone knows a more direct way.

Here's a more concrete example of how to access GET parameters. The Request object has a method that parses them out for you called Query:

Assuming a request URL like http://host:port/something?param1=b

func newHandler(w http.ResponseWriter, r *http.Request) {
  fmt.Println("GET params were:", r.URL.Query())

  // if only one expected
  param1 := r.URL.Query().Get("param1")
  if param1 != "" {
    // ... process it, will be the first (only) if multiple were given
    // note: if they pass in like ?param1=&param2= param1 will also be "" :|
  }

  // if multiples possible, or to process empty values like param1 in
  // ?param1=&param2=something
  param1s := r.URL.Query()["param1"]
  if len(param1s) > 0 {
    // ... process them ... or you could just iterate over them without a check
    // this way you can also tell if they passed in the parameter as the empty string
    // it will be an element of the array that is the empty string
  }    
}

Also note "the keys in a Values map [i.e. Query() return value] are case-sensitive."

Name your Interface what it is. Truck. Not ITruck because it isn't an ITruck it is a Truck.

An Interface in Java is a Type. Then you have DumpTruck, TransferTruck, WreckerTruck, CementTruck, etc that implement Truck.

When you are using the Interface in place of a sub-class you just cast it to Truck. As in List<Truck>. Putting I in front is just Hungarian style notation tautology that adds nothing but more stuff to type to your code.

All modern Java IDE's mark Interfaces and Implementations and what not without this silly notation. Don't call it TruckClass that is tautology just as bad as the IInterface tautology.

If it is an implementation it is a class. The only real exception to this rule, and there are always exceptions, could be something like AbstractTruck. Since only the sub-classes will ever see this and you should never cast to an Abstract class it does add some information that the class is abstract and to how it should be used. You could still come up with a better name than AbstractTruck and use BaseTruck or DefaultTruck instead since the abstract is in the definition. But since Abstract classes should never be part of any public facing interface I believe it is an acceptable exception to the rule. Making the constructors protected goes a long way to crossing this divide.

And the Impl suffix is just more noise as well. More tautology. Anything that isn't an interface is an implementation, even abstract classes which are partial implementations. Are you going to put that silly Impl suffix on every name of every Class?

The Interface is a contract on what the public methods and properties have to support, it is also Type information as well. Everything that implements Truck is a Type of Truck.

Look to the Java standard library itself. Do you see IList, ArrayListImpl, LinkedListImpl? No, you see List and ArrayList, and LinkedList. Here is a nice article about this exact question. Any of these silly prefix/suffix naming conventions all violate the DRY principle as well.

Also, if you find yourself adding DTO, JDO, BEAN or other silly repetitive suffixes to objects then they probably belong in a package instead of all those suffixes. Properly packaged namespaces are self documenting and reduce all the useless redundant information in these really poorly conceived proprietary naming schemes that most places don't even internally adhere to in a consistent manner.

If all you can come up with to make your Class name unique is suffixing it with Impl, then you need to rethink having an Interface at all. So when you have a situation where you have an Interface and a single Implementation that is not uniquely specialized from the Interface you probably don't need the Interface.

The other answers are not incorrect. However, now there are more options for opening files. For example, if you want the app to have long term, permanent acess to a file, you can use ACTION_OPEN_DOCUMENT instead. Refer to the official documentation: Open files using storage access framework. Also refer to this answer.

This page from Microsoft's Excel VBA documentation helped me: https://docs.microsoft.com/en-us/office/vba/api/excel.xlpastetype

It gives a bunch of options to customize how you paste. For instance, you could xlPasteAll (probably what you're looking for), or xlPasteAllUsingSourceTheme, or even xlPasteAllExceptBorders.

Have encountered the same issue in my asp.net project, in the end i found the issue is with the target function not static, the issue fixed after I put the keyword static.

[WebMethod]
public static List<string> getRawData()

var result = list.GroupBy(x => x.Category).Select(x => x.First())

One reason lists work as they do (ordered) is to address the need for an ordered container that can contain any type at any node, which vectors do not do. Lists are re-used for a variety of purposes in R, including forming the base of a data.frame, which is a list of vectors of arbitrary type (but the same length).

Why do these two expressions not return the same result?

x = list(1, 2, 3, 4); x2 = list(1:4)

To add to @Shane's answer, if you wanted to get the same result, try:

x3 = as.list(1:4)

Which coerces the vector 1:4 into a list.

See Converting unix timestamp to excel date-time forum thread.

An improvement upon previous answers (working on multi-line or tabbed strings):

String.prototype.firstWord = function(){return this.replace(/\s.*/,'')}

Or using search and substr:

String.prototype.firstWord = function(){let sp=this.search(/\s/);return sp<0?this:this.substr(0,sp)}

Or without regex:

String.prototype.firstWord = function(){
  let sps=[this.indexOf(' '),this.indexOf('\u000A'),this.indexOf('\u0009')].
   filter((e)=>e!==-1);
  return sps.length? this.substr(0,Math.min(...sps)) : this;
}

Examples:

String.prototype.firstWord = function(){return this.replace(/\s.*/,'')}_x000D_
console.log(`linebreak_x000D_
example 1`.firstWord()); // -> linebreak_x000D_
console.log('space example 2'.firstWord()); // -> singleline_x000D_
console.log('tab example 3'.firstWord()); // -> tab

Add comments for two different columns of the EMPLOYEE table :

COMMENT ON EMPLOYEE
     (WORKDEPT IS 'see DEPARTMENT table for names',
     EDLEVEL IS 'highest grade level passed in school' )

As far as I know, if an exception is not caught by your script, it will be interrupted.

#include <string>
#include <locale>

std::string str = "Hello World!";
auto & f = std::use_facet<std::ctype<char>>(std::locale());
f.toupper(str.data(), str.data() + str.size());

This will perform better than all the answers that use the global toupper function, and is presumably what boost::to_upper is doing underneath.

This is because ::toupper has to look up the locale - because it might've been changed by a different thread - for every invocation, whereas here only the call to locale() has this penalty. And looking up the locale generally involves taking a lock.

This also works with C++98 after you replace the auto, use of the new non-const str.data(), and add a space to break the template closing (">>" to "> >") like this:

std::use_facet<std::ctype<char> > & f = 
    std::use_facet<std::ctype<char> >(std::locale());
f.toupper(const_cast<char *>(str.data()), str.data() + str.size());

My code was broken because I was using a deprecated technique. It used to be this:

video.src = window.URL.createObjectURL(localMediaStream);
video.play();

Then I replaced that with this:

video.srcObject = localMediaStream;
video.play();

That worked beautifully.

EDIT: Recently localMediaStream has been deprecated and replaced with MediaStream. The latest code looks like this:

video.srcObject = new MediaStream();

References:

1. Deprecated technique: https://developer.mozilla.org/en-US/docs/Web/API/URL/createObjectURL
2. Modern deprecated technique: https://developer.mozilla.org/en-US/docs/Web/API/HTMLMediaElement/srcObject
3. Modern technique: https://developer.mozilla.org/en-US/docs/Web/API/MediaStream

I am adding more points to the solution by @Rushi Shah

mvn clean install -X helps to identify the root cause.

Some of the important phases of Maven build lifecycle are:

clean – the project is clean of all artifacts that came from previous compilations compile – the project is compiled into /target directory of project root install – packaged archive is copied into local maven repository (could in your user's home directory under /.m2) test – unit tests are run package – compiled sources are packaged into archive (JAR by default)

The 1.6 under tag refers to JDK version. We need to ensure that proper jdk version in our dev environment or change the value to 1.7 or 1.5 or whatever if the application can be supported in that JDK version.

<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>3.0</version>
            <configuration>
                <source>1.6</source>
                <target>1.6</target>
            </configuration>
        </plugin>
    </plugins>
</build>

We can find the complete details on Maven build lifecycle in Maven site.

The reason for the error is the same origin policy. It only allows you to do XMLHTTPRequests to your own domain. See if you can use a JSONP callback instead:

$.getJSON( 'http://<url>/api.php?callback=?', function ( data ) { alert ( data ); } );

Here's my rough solution

(function(){
var index = 1;
var intervals = {},
    timeouts = {};

function postMessageHandler(e) {
    window.postMessage('', "*");

    var now = new Date().getTime();

    sysFunc._each.call(timeouts, function(ind, obj) {
        var targetTime = obj[1];

        if (now >= targetTime) {
            obj[0]();
            delete timeouts[ind];
        }
    });
    sysFunc._each.call(intervals, function(ind, obj) {
        var startTime = obj[1];
        var func = obj[0];
        var ms = obj[2];

        if (now >= startTime + ms) {
            func();
            obj[1] = new Date().getTime();
        }
    });
}
window.addEventListener("message", postMessageHandler, true);
window.postMessage('', "*");

function _setTimeout(func, ms) {
    timeouts[index] = [func, new Date().getTime() + ms];
    return index++;
}

function _setInterval(func, ms) {
    intervals[index] = [func, new Date().getTime(), ms];
    return index++;
}

function _clearInterval(ind) {
    if (intervals[ind]) {
        delete intervals[ind]
    }
}
function _clearTimeout(ind) {
    if (timeouts[ind]) {
        delete timeouts[ind]
    }
}

var intervalIndex = _setInterval(function() {
    console.log('every 100ms');
}, 100);
_setTimeout(function() {
    console.log('run after 200ms');
}, 200);
_setTimeout(function() {
    console.log('closing the one that\'s 100ms');
    _clearInterval(intervalIndex)
}, 2000);

window._setTimeout = _setTimeout;
window._setInterval = _setInterval;
window._clearTimeout = _clearTimeout;
window._clearInterval = _clearInterval;
})();

Since the rules are running in JavaScript, why not disable them using javascript (or in my examples case, jQuery)?

$('#fieldId').attr('disabled', 'disabled'); //Disable
$('#fieldId').removeAttr('disabled'); //Enable

UPDATE

The attr function is no longer the primary approach to this, as was pointed out in the comments below. This is now done with the prop function.

$( "input" ).prop( "disabled", true ); //Disable
$( "input" ).prop( "disabled", false ); //Enable

First, thanks to William.

Second - i needed a dynamic version. And it works!

An example:

CSS:

p[id^="detailView-"]
{
    display: none;
}

p[id^="detailView-"]:target
{
    display: block;
}

HTML:

<a href="#detailView-1">Show View1</a>
<p id="detailView-1">View1</p>

<a href="#detailView-2">Show View2</a>
<p id="detailView-2">View2</p>

1) "container" is a class and not an ID 2) .container - set z-index and display: none in your CSS and not inline unless there is a really good reason to do so. Demo@fiddle

$("#button").click(function() {
    $(".container").css("opacity", 0.2);
   $("#loading-img").css({"display": "block"});
});

CSS:

#loading-img {
    background: url(http://web.bogdanteodoru.com/wp-content/uploads/2012/01/bouncy-css3-loading-animation.jpg) center center no-repeat;  /* different for testing purposes */
    display: none;
    height: 100px; /* for testing purposes */
    z-index: 12;
}

And a demo with animated image.

GROUP_CONCAT has DISTINCT attribute:

SELECT GROUP_CONCAT(DISTINCT categories ORDER BY categories ASC SEPARATOR ' ') FROM table

For more info refer this: SQL Server Date Formats

[MM/DD/YYYY]

SELECT CONVERT(VARCHAR(10), cast(dt_col as date), 101) from tbl

[DD/MM/YYYY]

SELECT CONVERT(VARCHAR(10), cast(dt_col as date), 103) from tbl

Live Demo

Little late but, can create a reusable javascript function for this purpose:

// Arguments: number to round, number of decimal places
function roundNumber(rnum, rlength) { 
    var newnumber = Math.round(rnum * Math.pow(10, rlength)) / Math.pow(10, rlength);
    return newnumber;
}

Call the function as

alert(roundNumber(192.168,2));

print "Matched!\n" if ($str1 eq $str2)

Perl has seperate string comparison and numeric comparison operators to help with the loose typing in the language. You should read perlop for all the different operators.

Note: Apply the class info_link to any link you want to get the info from.

<a class="info_link" href="~/Resumes/Resumes1271354404687.docx">
    ~/Resumes/Resumes1271354404687.docx
</a>

For href:

$(function(){
  $('.info_link').click(function(){
    alert($(this).attr('href'));
    // or alert($(this).hash();
  });
});

For Text:

$(function(){
  $('.info_link').click(function(){
    alert($(this).text());
  });
});

.

Update Based On Question Edit

You can get them like this now:

For href:

$(function(){
  $('div.res a').click(function(){
    alert($(this).attr('href'));
    // or alert($(this).hash();
  });
});

For Text:

$(function(){
  $('div.res a').click(function(){
    alert($(this).text());
  });
});

fmin and fmax are only for floating point and double variables.

min and max are template functions that allow comparison of any types, given a binary predicate. They can also be used with other algorithms to provide complex functionality.

Try this:

    $arr = (array) null;
    var_dump($arr);

    // will print
    // array(0) { }

While I know the question is about the real device, in case someone got here with a similar issue in the emulator, with whatever tools are the latest as of Feb, 2017, the emulator needs to be launched from the command line with:

-writable-system

For anything to be writable to the /system. Without this flag no combination of remount or mount will allow one to write to /system.

After the emulator is launched with that flag, a single adb remount after adb root is sufficient to get permissions to push to /system.

Here's an example of the command line I use to run my emulator:

./emulator -writable-system -avd Nexus_5_API_25 -no-snapshot-load -qemu

The value for the -avd flags comes from:

./emulator -list-avds

This should do it:

sed -e s/deletethis//g -i *
sed -e "s/deletethis//g" -i.backup *
sed -e "s/deletethis//g" -i .backup *

it will replace all occurrences of "deletethis" with "" (nothing) in all files (*), editing them in place.

In the second form the pattern can be edited a little safer, and it makes backups of any modified files, by suffixing them with ".backup".

The third form is the way some versions of sed like it. (e.g. Mac OS X)

man sed for more information.

Best way is use DateTime object to convert your date.

$myDateTime = DateTime::createFromFormat('Y-m-d', $weddingdate);
$formattedweddingdate = $myDateTime->format('d-m-Y');

Note: It will support for PHP 5 >= 5.3.0 only.

Just skip the excel part - the excel user forms are just a poor man's version of the way more robust Access forms. Also Access VBA is identical to Excel VBA - you just have to learn Access' object model. With a simple application you won't need to write much VBA anyways because in Access you can wire things together quite easily.

File -> Project Structure -> Modules (app) -> Open Dependencies Tab -> Remove all then use + to add from the proposed list.

To get .woff fonts first open the chrome dev tools panel (Ctrl+Shift+i) go to Network and reload the page. There you will see everything the page downloads. Find the .woff file, right click and select Copy response.

The response will be a url so paste it in the navigation bar. A file will be downloaded, just add the .woff extension to it and voila.

try keyup instead of change.

<script type="text/javascript">
   $(document).ready(function () {
       $('#inputDatabaseName').keyup(function () { alert('test'); });
   });
</script>

Here's the official jQuery documentation for .keyup().

?php

/* Database config */

$db_host        = 'localhost';
$db_user        = '~';
$db_pass        = '~';
$db_database    = 'banners'; 

/* End config */


$mysqli = new mysqli($db_host, $db_user, $db_pass, $db_database);
/* check connection */
if (mysqli_connect_errno()) {
    printf("Connect failed: %s\n", mysqli_connect_error());
    exit();
}

?>

JSONObject(html).getString("name");

How to get the html String: Make an HTTP request with android

Something like:

Dim myArray(9) as String

Would give you an array of 10 String references (each pointing to Nothing).

If you're not sure of the size at declaration time, you can declare a String array like this:

Dim myArray() as String

And then you can point it at a properly-sized array of Strings later:

ReDim myArray(9) as String

ZombieSheep is right about using a List if you don't know the total size and you need to dynamically populate it. In VB.NET that would be:

Dim myList as New List(Of String)
myList.Add("foo")
myList.Add("bar")

And then to get an array from that List:

myList.ToArray()

@Mark

Thanks for the correction.

Here is true answer which allows fully customize of error page in single place. No need to modify web.config or create separate code.

Works also in MVC 5.

Add this code to controller:

        if (bad) {
            Response.Clear();
            Response.TrySkipIisCustomErrors = true;
            Response.Write(product + I(" Toodet pole"));
            Response.StatusCode = (int)HttpStatusCode.NotFound;
            //Response.ContentType = "text/html; charset=utf-8";
            Response.End();
            return null;
        }

Based on http://www.eidias.com/blog/2014/7/2/mvc-custom-error-pages

This is what solved my problem. ^M is a carriage return, and it can be easily avoided in a Perl script.

while(<INPUTFILE>)
{
     chomp;
     chop($_) if ($_ =~ m/\r$/);
}

double example = 3.1416789645;
double output = Convert.ToDouble(example.ToString("N3"));

Basic usage

The "string to long" (strtol) function is standard for this ("long" can hold numbers much larger than "int"). This is how to use it:

#include <stdlib.h>

long arg = strtol(argv[1], NULL, 10);
// string to long(string, endpointer, base)

Since we use the decimal system, base is 10. The endpointer argument will be set to the "first invalid character", i.e. the first non-digit. If you don't care, set the argument to NULL instead of passing a pointer, as shown.

Error checking (1)

If you don't want non-digits to occur, you should make sure it's set to the "null terminator", since a \0 is always the last character of a string in C:

#include <stdlib.h>

char* p;
long arg = strtol(argv[1], &p, 10);
if (*p != '\0') // an invalid character was found before the end of the string

Error checking (2)

As the man page mentions, you can use errno to check that no errors occurred (in this case overflows or underflows).

#include <stdlib.h>
#include <errno.h>

char* p;
errno = 0; // not 'int errno', because the '#include' already defined it
long arg = strtol(argv[1], &p, 10);
if (*p != '\0' || errno != 0) {
    return 1; // In main(), returning non-zero means failure
}

// Everything went well, print it as 'long decimal'
printf("%ld", arg);

Convert to integer

So now we are stuck with this long, but we often want to work with integers. To convert a long into an int, we should first check that the number is within the limited capacity of an int. To do this, we add a second if-statement, and if it matches, we can just cast it.

#include <stdlib.h>
#include <errno.h>
#include <limits.h>

char* p;
errno = 0; // not 'int errno', because the '#include' already defined it
long arg = strtol(argv[1], &p, 10);
if (*p != '\0' || errno != 0) {
    return 1; // In main(), returning non-zero means failure
}

if (arg < INT_MIN || arg > INT_MAX) {
    return 1;
}
int arg_int = arg;

// Everything went well, print it as a regular number
printf("%d", arg_int);

To see what happens if you don't do this check, test the code without the INT_MIN/MAX if-statement. You'll see that if you pass a number larger than 2147483647 (2³¹), it will overflow and become negative. Or if you pass a number smaller than -2147483648 (-2³¹-1), it will underflow and become positive. Values beyond those limits are too large to fit in an integer.

Full example

#include <stdio.h>  // for printf()
#include <stdlib.h> // for strtol()
#include <errno.h>  // for errno
#include <limits.h> // for INT_MIN and INT_MAX

int main(int argc, char** argv) {
    char* p;
    errno = 0; // not 'int errno', because the '#include' already defined it
    long arg = strtol(argv[1], &p, 10);
    if (*p != '\0' || errno != 0) {
        return 1; // In main(), returning non-zero means failure
    }

    if (arg < INT_MIN || arg > INT_MAX) {
        return 1;
    }
    int arg_int = arg;

    // Everything went well, print it as a regular number plus a newline
    printf("Your value was: %d\n", arg_int);
    return 0;
}

In Bash, you can test this with:

cc code.c -o example  # Compile, output to 'example'
./example $((2**31-1))  # Run it
echo "exit status: $?"  # Show the return value, also called 'exit status'

Using 2**31-1, it should print the number and 0, because 2³¹-1 is just in range. If you pass 2**31 instead (without -1), it will not print the number and the exit status will be 1.

Beyond this, you can implement custom checks: test whether the user passed an argument at all (check argc), test whether the number is in the range that you want, etc.

The System.Linq.Enumerable.Count extension method on IEnumerable<T> has the following implementation:

ICollection<T> c = source as ICollection<TSource>;
if (c != null)
    return c.Count;

int result = 0;
using (IEnumerator<T> enumerator = source.GetEnumerator())
{
    while (enumerator.MoveNext())
        result++;
}
return result;

So it tries to cast to ICollection<T>, which has a Count property, and uses that if possible. Otherwise it iterates.

So your best bet is to use the Count() extension method on your IEnumerable<T> object, as you will get the best performance possible that way.

I'll suggest using unlessand blank to check is empty or not.

Example :

unless a.blank?
  a = "Is not empty"
end

This will know 'a' empty or not. If 'a' is blank then the below code will not run.

eval isn't always evil. There are times where it's perfectly appropriate.

However, eval is currently and historically massively over-used by people who don't know what they're doing. That includes people writing JavaScript tutorials, unfortunately, and in some cases this can indeed have security consequences - or, more often, simple bugs. So the more we can do to throw a question mark over eval, the better. Any time you use eval you need to sanity-check what you're doing, because chances are you could be doing it a better, safer, cleaner way.

To give an all-too-typical example, to set the colour of an element with an id stored in the variable 'potato':

eval('document.' + potato + '.style.color = "red"');

If the authors of the kind of code above had a clue about the basics of how JavaScript objects work, they'd have realised that square brackets can be used instead of literal dot-names, obviating the need for eval:

document[potato].style.color = 'red';

...which is much easier to read as well as less potentially buggy.

(But then, someone who /really/ knew what they were doing would say:

document.getElementById(potato).style.color = 'red';

which is more reliable than the dodgy old trick of accessing DOM elements straight out of the document object.)

You can change that default behavior in your .gitconfig, for example:

[push]
  default = current

To check the current settings, run:

git config --global --get push.default

You can run PHP as with any web-server, using the SPHP module for node.
It's compatible but not dependent on express.
It also supports websockets requests on the HTTP port.
Its biased for speed under small load, rather then saving resources.

To install in node:

npm install sphp

in you app:

var express = require('express');
var sphp = require('sphp');

var app = express();
var server = app.listen(8080);

app.use(sphp.express('public/'));
app.use(express.static('public/'));

For more information, look at https://github.com/paragi/sphp

I'm slightly biased too because I'm the author :)

If you go to your android-sdk/tools folder I think you'll find a message :

The adb tool has moved to platform-tools/

If you don't see this directory in your SDK, launch the SDK and AVD Manager (execute the android tool) and install "Android SDK Platform-tools"

Please also update your PATH environment variable to include the platform-tools/ directory, so you can execute adb from any location.

So you should also add C:/android-sdk/platform-tools to you environment path. Also after you modify the PATH variable make sure that you start a new CommandPrompt window.

You're trying to assign three separate string literals to a single string variable. A valid string variable would be 'John, Sarah, George'. If you want embedded single quotes between the double quotes, you have to escape them.

Also, your actual SELECT won't work, because SQL databases won't parse the string variable out into individual literal values. You need to use dynamic SQL instead, and then execute that dynamic SQL statement. (Search this site for dynamic SQL, with the database engine you're using as the topic (as in [sqlserver] dynamic SQL), and you should get several examples.)

You need to use an explicit color value (e.g. #000 or blue) for the color-property. none is invalid here. The initial value is browser-specific and cannot be restored using CSS. Keep in mind that there are some other pseudo-classes than :active, too.

Now that Android Studio is in the stable channel, it is pretty straightforward to get the android-ndk samples running. These samples use the ndk experimental plugin and are newer than the ones linked to from the Android NDK online documentation. Once you know they work you can study the build.gradle, local.properties and gradle-wrapper.properties files and modify your project accordingly. Following are the steps to get them working.

1. Go to settings, Appearance & Behavior, System Settings, Android SDK, selected the SDK Tools tab, and check Android NDK version 1.0.0 at the bottom of the list. This will download the NDK.

2. Point to the location of the newly downloaded NDK. Note that it will be placed in the sdk/ndk-bundle directory. Do this by selecting File, Project Structure, SDK Location (on left), and supplying a path under Android NDK location. This will add an ndk entry to local.properties similar to this:

   Mac/Linux: ndk.dir=/Android/sdk/ndk-bundle
   Windows: ndk.dir=C:\Android\sdk\ndk-bundle

I have successfully built and deployed all projects in the repository this way, except gles3gni, native-codec and builder. I'm using the following:

Android Studio 1.3 build AI-141.2117773
android-ndk samples published July 28, 2015 (link above)
SDK Tools 24.3.3
NDK r10e extracted to C:\Android\sdk\ndk-bundle
Gradle 2.5
Gradle plugin 0.2.0
Windows 8.1 64 bit

Well what you can do is just open mysql.cfg file and you have to change Bind-address to this

bind-address = 127.0.0.1

and then Restart mysql and you will able to connect that server to this.

Look this you can have idea form that.

this is real sol

To clarify, the above example does work, my code in the example did not work for unrelated reasons.

If myvar is false, null or has never been used before (i.e. $scope.myvar or $rootScope.myvar never called), the div will not show. Once any value has been assigned to it, the div will show, except if the value is specifically false.

The following will cause the div to show:

$scope.myvar = "Hello World";

or

$scope.myvar = true;

The following will hide the div:

$scope.myvar = null;

or

$scope.myvar = false;

I tried this:

class dotdict(dict):
    def __getattr__(self, name):
        return self[name]

you can try __getattribute__ too.

make every dict a type of dotdict would be good enough, if you want to init this from a multi-layer dict, try implement __init__ too.

Here is how I solved this on ubuntu 18:

1. $ sudo docker ps -a
2. copy the container ID

For each container do:

3. $ sudo docker stop container_ID
4. $ sudo docker rm container_ID

I treid all the solutions mentioned here, but no luck. I found in my build.gradle file as below:

dependencies {
        classpath 'com.android.tools.build:gradle:3.3.0'
    }

I just changed it as below and saved and tried build success.

dependencies {
        classpath 'com.android.tools.build:gradle:3.2.0'
    }

public class colorString
{

public static void main( String[] args )
{
    new colorString();   

}

public colorString( )
{
    kFrame f = new kFrame();
    f.setSize( 400, 400 );
    f.setVisible( true );
}

private static class kFrame extends JFrame
{
    @Override
    public void paint(Graphics g) 
    {
        super.paint( g );
        Graphics2D g2d = (Graphics2D)g;
        g2d.setColor( new Color(255, 0, 0) );
        g2d.drawString("red red red red red", 100, 100 );
    }
}
}

The error means you cannot use the local variable mi inside an inner class.

To use a variable inside an inner class you must declare it final. As long as mi is the counter of the loop and final variables cannot be assigned, you must create a workaround to get mi value in a final variable that can be accessed inside inner class:

final Integer innerMi = new Integer(mi);

So your code will be like this:

for (int mi=0; mi<colors.length; mi++){

    String pos = Character.toUpperCase(colors[mi].charAt(0)) + colors[mi].substring(1);
    JMenuItem Jmi =new JMenuItem(pos);
    Jmi.setIcon(new IconA(colors[mi]));

    // workaround:
    final Integer innerMi = new Integer(mi);

    Jmi.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                JMenuItem item = (JMenuItem) e.getSource();
                IconA icon = (IconA) item.getIcon();
                // HERE YOU USE THE FINAL innerMi variable and no errors!!!
                Color kolorIkony = getColour(colors[innerMi]); 
                textArea.setForeground(kolorIkony);
            }
        });

        mnForeground.add(Jmi);
    }
}

If you prefer to use Apache Commons instead of reinventing the wheel, the current approach is this:

a = ArrayUtils.insert(4, a, 87);

It used to be ArrayUtils.add(...) but that was deprecated a while ago. More info here: 1

For me:

<input id="color" value="Blue"/>

This can be fetched by below snippet.

page = requests.get("https://www.abcd.com")
soup = BeautifulSoup(page.content, 'html.parser')
colorName = soup.find(id='color')
print(color['value'])

You can invoke lambda function directly (at least via Java) by using AWSLambdaClient as described in the AWS' blog post.

The following code helps me to setup communication between two siblings. The setup is done in their parent during render() and componentDidMount() calls. It is based on https://reactjs.org/docs/refs-and-the-dom.html Hope it helps.

class App extends React.Component<IAppProps, IAppState> {
    private _navigationPanel: NavigationPanel;
    private _mapPanel: MapPanel;

    constructor() {
        super();
        this.state = {};
    }

    // `componentDidMount()` is called by ReactJS after `render()`
    componentDidMount() {
        // Pass _mapPanel to _navigationPanel
        // It will allow _navigationPanel to call _mapPanel directly
        this._navigationPanel.setMapPanel(this._mapPanel);
    }

    render() {
        return (
            <div id="appDiv" style={divStyle}>
                // `ref=` helps to get reference to a child during rendering
                <NavigationPanel ref={(child) => { this._navigationPanel = child; }} />
                <MapPanel ref={(child) => { this._mapPanel = child; }} />
            </div>
        );
    }
}

You can see that your locks are pretty much working as you are using them, if you slow down the process and make them block a bit more. You had the right idea, where you surround critical pieces of code with the lock. Here is a small adjustment to your example to show you how each waits on the other to release the lock.

import threading
import time
import inspect

class Thread(threading.Thread):
    def __init__(self, t, *args):
        threading.Thread.__init__(self, target=t, args=args)
        self.start()

count = 0
lock = threading.Lock()

def incre():
    global count
    caller = inspect.getouterframes(inspect.currentframe())[1][3]
    print "Inside %s()" % caller
    print "Acquiring lock"
    with lock:
        print "Lock Acquired"
        count += 1  
        time.sleep(2)  

def bye():
    while count < 5:
        incre()

def hello_there():
    while count < 5:
        incre()

def main():    
    hello = Thread(hello_there)
    goodbye = Thread(bye)


if __name__ == '__main__':
    main()

Sample output:

...
Inside hello_there()
Acquiring lock
Lock Acquired
Inside bye()
Acquiring lock
Lock Acquired
...

grep -oh string * | wc -w

will count multiple occurrences in a line

A more correct solution

... since dates naturally have time-zone information, which can span regions with different day light savings adjustments

Previous answers to this question don't account for cases where the two dates in question span a daylight saving time (DST) change. The date on which the DST change happens will have a duration in milliseconds which is != 1000*60*60*24, so the typical calculation will fail.

You can work around this by first normalizing the two dates to UTC, and then calculating the difference between those two UTC dates.

Now, the solution can be written as,

const _MS_PER_DAY = 1000 * 60 * 60 * 24;

// a and b are javascript Date objects
function dateDiffInDays(a, b) {
  // Discard the time and time-zone information.
  const utc1 = Date.UTC(a.getFullYear(), a.getMonth(), a.getDate());
  const utc2 = Date.UTC(b.getFullYear(), b.getMonth(), b.getDate());

  return Math.floor((utc2 - utc1) / _MS_PER_DAY);
}

// test it
const a = new Date("2017-01-01"),
    b = new Date("2017-07-25"),
    difference = dateDiffInDays(a, b);

This works because UTC time never observes DST. See Does UTC observe daylight saving time?

p.s. After discussing some of the comments on this answer, once you've understood the issues with javascript dates that span a DST boundary, there is likely more than just one way to solve it. What I provided above is a simple (and tested) solution. I'd be interested to know if there is a simple arithmetic/math based solution instead of having to instantiate the two new Date objects. That could potentially be faster.

The API return value in my case as shown here:

{
  "pageIndex": 1,
  "pageSize": 10,
  "totalCount": 1,
  "totalPageCount": 1,
  "items": [
    {
      "firstName": "Stephen",
      "otherNames": "Ebichondo",
      "phoneNumber": "+254721250736",
      "gender": 0,
      "clientStatus": 0,
      "dateOfBirth": "1979-08-16T00:00:00",
      "nationalID": "21734397",
      "emailAddress": "[email protected]",
      "id": 1,
      "addedDate": "2018-02-02T00:00:00",
      "modifiedDate": "2018-02-02T00:00:00"
    }
  ],
  "hasPreviousPage": false,
  "hasNextPage": false
}

The conversion of the items array to list of clients was handled as shown here:

 if (responseMessage.IsSuccessStatusCode)
        {
            var responseData = responseMessage.Content.ReadAsStringAsync().Result;
            JObject result = JObject.Parse(responseData);

            var clientarray = result["items"].Value<JArray>();
            List<Client> clients = clientarray.ToObject<List<Client>>();
            return View(clients);
        }

I know this is a really old question, but in case someone is looking for the newer way to do this, use the spring util namespace:

<util:constant static-field="my.pkg.types.MyEnumType.TYPE1" />

As described in the spring documentation.

This is how I've been doing subqueries in LINQ, I think this should get what you want. You can replace the explicit CompanyRoleId == 2... with another subquery for the different roles you want or join it as well.

from u in Users
join c in (
    from crt in CompanyRolesToUsers
    where CompanyRoleId == 2
    || CompanyRoleId == 3
    || CompanyRoleId == 4) on u.UserId equals c.UserId
where u.lastname.Contains("fra")
select u;

So if you are using bootstrap4 then this will work.

<style>
   .tooltip-inner {
    white-space: pre-wrap;
   }

</style>

<script> 
    $(function () {
      $('[data-toggle="tooltip"]').tooltip()
    })
</script>

<a data-toggle="tooltip" data-placement="auto" title=" first line &#010; next line" href= ""> Hover me </a>

If you are using in Django project then we can also display dynamic data in tooltips like:

<a class="black-text pb-2 pt-1" data-toggle="tooltip" data-placement="auto"  title="{{ post.location }} &#010; {{ post.updated_on }}" href= "{% url 'blog:get_user_profile' post.author.id %}">{{ post.author }}</a>

For some browsers you can use

object-fit: cover;

http://caniuse.com/object-fit

For SQL 2008 you can backup log to nul device:

BACKUP LOG [databaseName]
TO DISK = 'nul:' WITH STATS = 10

And then use DBCC SHRINKFILE to truncate the log file.

For me the root of the problem was a number which I copied to use in a WHERE clause. The number had "invisible" symbol, at least for MySQL Workbench. I placed the number in the Chrome console it was clearly visible.