VM Ubuntu on a Mac...fn + shift + up/down arrows

If you have a newer distro with a newer systemd (systemd version 236 or newer), you can set the values of StandardOutput or StandardError to file:YOUR_ABSPATH_FILENAME.

Long story:

In newer versions of systemd there is a relatively new option (the github request is from 2016 ish and the enhancement is merged/closed 2017 ish) where you can set the values of StandardOutput or StandardError to file:YOUR_ABSPATH_FILENAME. The file:path option is documented in the most recent systemd.exec man page.

This new feature is relatively new and so is not available for older distros like centos-7 (or any centos before that).

To update and answer the question without breaking mail servers. Later versions of CentOS 7 have MariaDB included as the base along with PostFix which relies on MariaDB. Removing using yum will also remove postfix and perl-DBD-MySQL. To get around this and keep postfix in place, first make a copy of /usr/lib64/libmysqlclient.so.18 (which is what postfix depends on) and then use:

rpm -qa | grep mariadb

then remove the mariadb packages using (changing to your versions):

rpm -e --nodeps "mariadb-libs-5.5.56-2.el7.x86_64"
rpm -e --nodeps "mariadb-server-5.5.56-2.el7.x86_64"
rpm -e --nodeps "mariadb-5.5.56-2.el7.x86_64"

Delete left over files and folders (which also removes any databases):

rm -f /var/log/mariadb
rm -f /var/log/mariadb/mariadb.log.rpmsave
rm -rf /var/lib/mysql
rm -rf /usr/lib64/mysql
rm -rf /usr/share/mysql

Put back the copy of /usr/lib64/libmysqlclient.so.18 you made at the start and you can restart postfix.

There is more detail at https://code.trev.id.au/centos-7-remove-mariadb-replace-mysql/ which describes how to replace mariaDB with MySQL

you can also check by

ps -ef |grep -i ora

Execute the below commands to make yum work as well as python2.7

yum groupinstall -y development
yum groupinstall -y 'development tools'
yum install -y zlib-dev openssl-devel wget sqlite-devel bzip2-devel
yum -y install gcc gcc-c++ numpy python-devel scipy git boost*
yum install -y *lapack*
yum install -y gcc gcc-c++ make bison flex autoconf libtool memcached libevent libevent-devel uuidd libuuid-devel  boost boost-devel libcurl-dev libcurl curl gperf mysql-devel

cd
mkdir srk
cd srk 
wget http://www.python.org/ftp/python/2.7.6/Python-2.7.6.tar.xz
yum install xz-libs
xz -d Python-2.7.6.tar.xz
tar -xvf Python-2.7.6.tar
cd Python-2.7.6
./configure --prefix=/usr/local
make
make altinstall



echo "export PATH="/usr/local/bin:$PATH"" >> /etc/profile
source /etc/profile
mv /usr/bin/python /usr/bin/python.bak
update-alternatives --install /usr/bin/python python /usr/bin/python2.6 1
update-alternatives --install /usr/bin/python python /usr/local/bin/python2.7 2
update-alternatives --config python
sed -i "s/python/python2.6/g" /usr/bin/yum

Just to add some other things to watch out for:

• Sudo in a init.d script is no good since it needs a tty ("sudo: sorry, you must have a tty to run sudo")
• If you are daemonizing a java application, you might want to consider Java Service Wrapper (which provides a mechanism for setting the user id)
• Another alternative could be su --session-command=[cmd] [user]

Python3 was recently added to EPEL7 as Python34.

There is ongoing (currently) effort to make packaging guidelines about how to package things for Python3 in EPEL7.

See https://bugzilla.redhat.com/show_bug.cgi?id=1219411
and https://lists.fedoraproject.org/pipermail/python-devel/2015-July/000721.html

To update container-selinux I had to install epel-release first:

Add Centos-7 repository

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

Install epel-release

yum install epel-release

Update container-selinux

yum install container-selinux

Make sure the scp command is available on both sides - both on the client and on the server.

If this is Fedora or Red Hat Enterprise Linux and clones (CentOS), make sure this package is installed:

    yum -y install openssh-clients

If you work with Debian or Ubuntu and clones, install this package:

    apt-get install openssh-client

Again, you need to do this both on the server and the client, otherwise you can encounter "weird" error messages on your client: scp: command not found or similar although you have it locally. This already confused thousands of people, I guess :)

Instead of sudo, try

su - username command

In my experience, sudo is not always available on RHEL systems, but su is, because su is part of the coreutils package whereas sudo is in the sudo package.

If you have a server which used to happily run MySQL, but now gives this error, then an uninstall and re-install of MySQL is overkill.

In my case, the server died and took a few disk blocks with it. This affected a few files, including /var/lib/mysql/mysql/host.frm and /var/lib/mysql/mysql/proc.frm

Luckily, I could copy these from another server, and this got me past that table error.

download rpm packages and run the following command:

rpm -Uvh glibc-2.15-60.el6.x86_64.rpm \
glibc-common-2.15-60.el6.x86_64.rpm \
glibc-devel-2.15-60.el6.x86_64.rpm \
glibc-headers-2.15-60.el6.x86_64.rpm

I had this problem on production with Heroku and locally while debugging on my macbook pro this morning.

After an hour of debugging, this resolved on its own both locally and on production. I'm not sure what fixed it, so that's a bit annoying. It happened right when I thought I did something, but reverting my supposed fix didn't bring the problem back :(

Interestingly enough, it appears my database service, MongoDb has been having server problems since this morning, so there's a good chance this was related to it.

Here's the extension method way of doing it.

public static class Extensions
{
    public static string ToDigitsOnly(this string input)
    {
        Regex digitsOnly = new Regex(@"[^\d]");
        return digitsOnly.Replace(input, "");
    }
}

There is no way to force EF to improve performance when doing it this way. The problem is that EF executes each insert in separate round trip to the database. Awesome isn't it? Even DataSets supported batch processing. Check this article for some workaround. Another workaround can be using custom stored procedure accepting table valued parameter but you need raw ADO.NET for that.

In your application context declare a AnnotationMethodHandlerAdapter and registerByteArrayHttpMessageConverter:

<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
  <property name="messageConverters">
    <util:list>
      <bean id="byteArrayMessageConverter" class="org.springframework.http.converter.ByteArrayHttpMessageConverter"/>
    </util:list>
  </property>
</bean> 

also in the handler method set appropriate content type for your response.

I was having this issue when testing my Cordova app on android. It just so happens that this android device does not persist its date, and will reset back to its factory date somehow. The API that it calls has a cert that is valid starting this year, while the device date after bootup is in 2017. For now, I have to adb shell and change the date manually.

For me, by running Visual Studio Code as Administrator, the problem is resolved.

After you run Lint in Android Studio and find all the unused resources, you can click on one of them from the Inspection tab. It provides some detail about the issue and a few options to fix it. One of them is Remove All Unused Resources. Selecting that option deletes all the unused resources.

For Apple TV Simulator (tvOS, AppleTV) you should add --display=external parameter. I use this to save to desktop:

xcrun simctl io booted recordVideo --display=external --codec=h264 --force ~/Desktop/SimulatorVideo.mov

--force to rewrite if file exist
--codec to higher framerate

In addition to Sabeen's answer:

The first column id is your primary key.
Don't insert '' into the primary key, but insert null instead.

INSERT INTO users
  (`id`,`title`,`firstname`,`lastname`,`company`,`address`,`city`,`county`
   ,`postcode`,`phone`,`mobile`,`category`,`email`,`password`,`userlevel`) 
VALUES     
  (null,'','John','Doe','company','Streeet','city','county'
  ,'postcode','phone','','category','[email protected]','','');

If it's an autoincrement key this will fix your problem.
If not make id an autoincrement key, and always insert null into it to trigger an autoincrement.

MySQL has a setting to autoincrement keys only on null insert or on both inserts of 0 and null. Don't count on this setting, because your code may break if you change server.
If you insert null your code will always work.

See: http://dev.mysql.com/doc/refman/5.0/en/example-auto-increment.html

You can't do it with just CSS, but you can do it with Javascript, and (optionally) jQuery.

If you want to do it without jQuery:

<script>
    window.onload = function() {
        var anchors = document.getElementsByTagName('a');
        for(var i = 0; i < anchors.length; i++) {
            var anchor = anchors[i];
            anchor.onclick = function() {
                alert('ho ho ho');
            }
        }
    }
</script>

And to do it without jQuery, and only on a specific class (ex: hohoho):

<script>
    window.onload = function() {
        var anchors = document.getElementsByTagName('a');
        for(var i = 0; i < anchors.length; i++) {
            var anchor = anchors[i];
            if(/\bhohoho\b/).match(anchor.className)) {
                anchor.onclick = function() {
                    alert('ho ho ho');
                }
            }
        }
    }
</script>

If you are okay with using jQuery, then you can do this for all anchors:

<script>
    $(document).ready(function() {
        $('a').click(function() {
            alert('ho ho ho');
        });
    });
</script>

And this jQuery snippet to only apply it to anchors with a specific class:

<script>
    $(document).ready(function() {
        $('a.hohoho').click(function() {
            alert('ho ho ho');
        });
    });
</script>

Requires Newtonsoft Json.Net

A little late, but I came up with this. It gives you just the keys and then you can use those on the dynamic:

public List<string> GetPropertyKeysForDynamic(dynamic dynamicToGetPropertiesFor)
{
    JObject attributesAsJObject = dynamicToGetPropertiesFor;
    Dictionary<string, object> values = attributesAsJObject.ToObject<Dictionary<string, object>>();
    List<string> toReturn = new List<string>();
    foreach (string key in values.Keys)
    {
        toReturn.Add(key);                
    }
    return toReturn;
}

Then you simply foreach like this:

foreach(string propertyName in GetPropertyKeysForDynamic(dynamicToGetPropertiesFor))
{
    dynamic/object/string propertyValue = dynamicToGetPropertiesFor[propertyName];
    // And
    dynamicToGetPropertiesFor[propertyName] = "Your Value"; // Or an object value
}

Choosing to get the value as a string or some other object, or do another dynamic and use the lookup again.

Sass is a language that provides features to make it easier to deal with complex styling compared to editing raw .css. An example of such a feature is allowing definition of variables that can be re-used in different styles.

The language has two alternative syntaxes:

• A JSON like syntax that is kept in files ending with .scss
• A YAML like syntax that is kept in files ending with .sass

Either of these must be compiled to .css files which are recognized by browsers.

See https://sass-lang.com/ for further information.

If you prefer it without:
flexbox / grid / table
or without the:
vertical-align: middle

You can do:

HTML

<div class="box">
  <h2 class="box_label">square</h2>
</div>

CSS

.box {
  box-sizing: border-box;
  width: 100px;
  height: 100px;
  text-align: center;
  border: 1px solid black;
}

.box_label {
  box-sizing: border-box;
  display: inline-block;
  transform: translateY(50%);
  text-align: center;
  border: 1px solid black;
}

I have tried every combination here to change the color, on my mobile platform, and eventually it was:

-webkit-text-fill-color: red;

which did the trick.

To add the the other answers, the POxx terms all appear to stem from POTS (Plain old telephone services).

The POX, used to define simple (plain old) XML, rather than the complex multi-layered stuff associated with REST, SOAP etc, was a useful, and vaguely amusing, term. PO(insert language of choice)O terms have rather worn the joke thin.

You can change it in iOS without opening Xcode by editing file *project/ios/Runner/info.plist. Set <key>CFBundleDisplayName</key> to the string that you want as your name.

For Android, change the app name from the Android folder, in the AndroidManifest.xml file, android/app/src/main. Let the android label refer to the name you prefer, for example,

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    <application
        android:label="test"
        // The rest of the code
    </application>
</manifest>

A note to romainl's answer: aliases don't work together with sudo because only the first word is checked on aliases. To change this add another alias to your .profile / .bashrc:

alias sudo='sudo '

With this change sudo vim will behave as expected!

jQuery recently started using source maps.

For example, let's look at the minified jQuery 2.0.3 file's first few lines.

/*! jQuery v2.0.3 | (c) 2005, 2013 jQuery Foundation, Inc. | jquery.org/license
//@ sourceMappingURL=jquery.min.map
*/

Excerpt from Introduction to JavaScript Source Maps:

Have you ever found yourself wishing you could keep your client-side code readable and more importantly debuggable even after you've combined and minified it, without impacting performance? Well now you can through the magic of source maps.

Basically it's a way to map a combined/minified file back to an unbuilt state. When you build for production, along with minifying and combining your JavaScript files, you generate a source map which holds information about your original files. When you query a certain line and column number in your generated JavaScript you can do a lookup in the source map which returns the original location. Developer tools (currently WebKit nightly builds, Google Chrome, or Firefox 23+) can parse the source map automatically and make it appear as though you're running unminified and uncombined files.

^{emphasis mine}

It's incredibly useful, and will only download if the user opens dev tools.

Solution

Remove the source mapping line, or do nothing. It isn't really a problem.

Side note: your server should return 404, not 500. It could point to a security problem if this happens in production.

Mine were located here on Ubuntu 18.04 when I installed JavaFX using apt install openjfx (as noted already by @jewelsea above)

/usr/share/java/openjfx/jre/lib/ext/jfxrt.jar
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/ext/jfxrt.jar

Use:

dateTimePicker.Value.ToString("yyyy/MM/dd")

Refer to the following link:

http://www.vbdotnetforums.com/schedule-time/15001-datetimepicker-format.html

Try figsize param in df.plot(figsize=(width,height)):

df = pd.DataFrame({"a":[1,2],"b":[1,2]})
df.plot(figsize=(3,3));

df = pd.DataFrame({"a":[1,2],"b":[1,2]})
df.plot(figsize=(5,3));

The size in figsize=(5,3) is given in inches per (width, height)

https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.DataFrame.plot.html

Looks like a corrupted assembly being referenced.

Clear both:

1. the \bin folder of your project

2. the temp folder (should be C:\Users\your_username\AppData\Local\Temp\Temporary ASP.NET Files in windows 7)

and see if the error still happens

I guess I am still unclear about what it is you are trying to do, but JScript.NET might be worth looking into, though Managed JScript seems like it may be more appropriate for your needs (it is more like JavaScript than JScript.NET).

Personally, I thought it would be cool to integrate V8 somehow, but I didn't get past downloading the source code; wish I had the time to actually do something with it.

I had this problem with local var and i just detach it like this:

if (ModelState.IsValid)
{
    var old = db.Channel.Find(channel.Id);
    if (Request.Files.Count > 0)
    {
        HttpPostedFileBase objFiles = Request.Files[0];
        using (var binaryReader = new BinaryReader(objFiles.InputStream))
        {
            channel.GateImage = binaryReader.ReadBytes(objFiles.ContentLength);
        }

    }
    else
        channel.GateImage = old.GateImage;
    var cat = db.Category.Find(CatID);
    if (cat != null)
        channel.Category = cat;
    db.Entry(old).State = EntityState.Detached; // just added this line
    db.Entry(channel).State = EntityState.Modified;
    await db.SaveChangesAsync();
    return RedirectToAction("Index");
}
return View(channel);

Problem causes of loaded objects with same Key, so first we will detach that object and do the the updating to avoid conflict between two object with the same Key

If you need a name for the csv columns, you can use this method

 $example= array_map(function($v) {$column = str_getcsv($v, ";");return array("foo" => $column[0],"bar" => $column[1]);},file('file.csv'));

This is a bit dated but there may be others looking for answers to the same question. You should think about what protection spaces make sense for your APIs. For example, you may want to identify and authenticate client application access to your APIs to restrict their use to known, registered client applications. In this case, you can use the Basic authentication scheme with the client identifier as the user-id and client shared secret as the password. You don't need proprietary authentication schemes just clearly identify the one(s) to be used by clients for each protection space. I prefer only one for each protection space but the HTTP standards allow both multiple authentication schemes on each WWW-Authenticate header response and multiple WWW-Authenticate headers in each response; this will be confusing for API clients which options to use. Be consistent and clear then your APIs will be used.

I recommend using DateTime objects instead of strings, because you cannot easily compare strings, which is required for sorting. You also get additional advantages for working with dates.

Once you have the DateTime objects, sorting is quite easy:

usort($array, function($a, $b) {
  return ($a['date'] < $b['date']) ? -1 : 1;
});

You may be looking for

-webkit-appearance: none;

• Safari CSS notes on -webkit-appearance
• Mozilla Developer Network's -moz-appearance

You can apply Object.prototype.toString to any object:

var toString = Object.prototype.toString;

console.log(toString.call([]));
//-> [object Array]

console.log(toString.call(/reg/g));
//-> [object RegExp]

console.log(toString.call({}));
//-> [object Object]

This works well in all browsers, with the exception of IE - when calling this on a variable obtained from another window it will just spit out [object Object].

Whenever I need to do this I build a simple PL/SQL block with a local procedure like this:

declare
   procedure ins
   is
      (p_exch_wh_key INTEGER, 
       p_exch_nat_key INTEGER, 
       p_exch_date DATE, exch_rate NUMBER, 
       p_from_curcy_cd VARCHAR2, 
       p_to_curcy_cd VARCHAR2, 
       p_exch_eff_date DATE, 
       p_exch_eff_end_date DATE, 
       p_exch_last_updated_date DATE);
   begin
      insert into tmp_dim_exch_rt 
      (exch_wh_key, 
       exch_nat_key, 
       exch_date, exch_rate, 
       from_curcy_cd, 
       to_curcy_cd, 
       exch_eff_date, 
       exch_eff_end_date, 
       exch_last_updated_date) 
      values
      (p_exch_wh_key, 
       p_exch_nat_key, 
       p_exch_date, exch_rate, 
       p_from_curcy_cd, 
       p_to_curcy_cd, 
       p_exch_eff_date, 
       p_exch_eff_end_date, 
       p_exch_last_updated_date);
   end;
begin
   ins (1, 1, '28-AUG-2008', 109.49, 'USD', 'JPY', '28-AUG-2008', '28-AUG-2008', '28-AUG-2008'),
   ins (2, 1, '28-AUG-2008', .54, 'USD', 'GBP', '28-AUG-2008', '28-AUG-2008', '28-AUG-2008'),
   ins (3, 1, '28-AUG-2008', 1.05, 'USD', 'CAD', '28-AUG-2008', '28-AUG-2008', '28-AUG-2008'),
   ins (4, 1, '28-AUG-2008', .68, 'USD', 'EUR', '28-AUG-2008', '28-AUG-2008', '28-AUG-2008'),
   ins (5, 1, '28-AUG-2008', 1.16, 'USD', 'AUD', '28-AUG-2008', '28-AUG-2008', '28-AUG-2008'),
   ins (6, 1, '28-AUG-2008', 7.81, 'USD', 'HKD', '28-AUG-2008', '28-AUG-2008', '28-AUG-2008');
end;
/

In your example, you have:

if (new BigInteger("1111000011110001", 2).toByteArray() == array)

When dealing with objects, == in java compares reference values. You're checking to see if the reference to the array returned by toByteArray() is the same as the reference held in array, which of course can never be true. In addition, array classes don't override .equals() so the behavior is that of Object.equals() which also only compares the reference values.

To compare the contents of two arrays, static array comparison methods are provided by the Arrays class

byte[] array = new BigInteger("1111000011110001", 2).toByteArray();
byte[] secondArray = new BigInteger("1111000011110001", 2).toByteArray();
if (Arrays.equals(array, secondArray))
{
    System.out.println("Yup, they're the same!");
}

Did you maybe use some <tab> instead of spaces?

Try remove all the spaces before the code and readd them using <space> characters, just to be sure it's not a <tab>.

You can simplify it like this:

if ( that_happened || something_else_happened )
{
    header('X-Error-Message: Incorrect username or password', true, 500);
    die;
}

It will return following header:

HTTP/1.1 500 Internal Server Error
...
X-Error-Message: Incorrect username or password
...

Added: If you need to know exactly what went wrong, do something like this:

if ( that_happened )
{
    header('X-Error-Message: Incorrect username', true, 500);
    die('Incorrect username');
}

if ( something_else_happened )
{
    header('X-Error-Message: Incorrect password', true, 500);
    die('Incorrect password');
}

$('.hoverme').live('mouseover mouseout', function(event) {
  if (event.type == 'mouseover') {
    // do something on mouseover
  } else {
    // do something on mouseout
  }
});

http://api.jquery.com/live/

Partial workaround for gradient transition is to use inset box shadow - you can transition either the box shadow itself, or the background color - e.g. if you create inset box shadow of the same color as background and than use transition on background color, it creates illusion that plain background is changing to radial gradient

.button SPAN {
    padding: 10px 30px; 
    border: 1px solid ##009CC5;

    -moz-box-shadow: inset 0 0 20px 1px #00a7d1;
    -webkit-box-shadow: inset 0 0 20px 1px#00a7d1;
    box-shadow: inset 0 0 20px 1px #00a7d1; 

    background-color: #00a7d1;
    -webkit-transition: background-color 0.5s linear;
    -moz-transition: background-color 0.5s linear;
    -o-transition: background-color 0.5s linear;
    transition: background-color 0.5s linear;
}

.button SPAN:hover {
    background-color: #00c5f7; 
}

As Paul stated, it's because 'a' is an int in C but a char in C++.

I cover that specific difference between C and C++ in something I wrote a few years ago, at: http://david.tribble.com/text/cdiffs.htm

Using #!/usr/bin/env NAME makes the shell search for the first match of NAME in the $PATH environment variable. It can be useful if you aren't aware of the absolute path or don't want to search for it.

The only way to really protect your php-applications from other, is to not share the source code. If you post you code somewhere online, or send it to you customers by some medium, other people than you have access to the code.

You could add an unique watermark to every single copy of your code. That way you can trace leaks back to a singe customer. (But will that help you, since the code already are outside of your control?)

Most code I see comes with a licence and maybe a warranty. A line at the top of the script telling people not to alter the script, will maybe be enought. Self; when I find non-open source code, I won't use it in my projects. Maybe I'm a bit dupe, but I expect ppl not to use my none-OSS code!

if you know for sure the element is unique (such as your case with the ID):

myDiv.parentElement.querySelectorAll("#myDiv > .foo");

For a more "global" solution: (use a matchesSelector shim)

function getDirectChildren(elm, sel){
    var ret = [], i = 0, l = elm.childNodes.length;
    for (var i; i < l; ++i){
        if (elm.childNodes[i].matchesSelector(sel)){
            ret.push(elm.childNodes[i]);
        }
    }
    return ret;
}

where elm is your parent element, and sel is your selector. Could totally be used as a prototype as well.

This is another way. In my case I have:

• 2 numeric updown controls (called LeftMargin and TopMargin)
• 1 Picture box (pictureBox1)
• 1 button that I called generate
• 1 image on C:\imagenes\myImage.gif

Inside the button I have this code:

Image myImage = Image.FromFile(@"C:\imagenes\myImage.gif");
Bitmap croppedBitmap = new Bitmap(myImage);
croppedBitmap = croppedBitmap.Clone(
            new Rectangle(
                (int)LeftMargin.Value, (int)TopMargin.Value,
                myImage.Width - (int)LeftMargin.Value,
                myImage.Height - (int)TopMargin.Value),
            System.Drawing.Imaging.PixelFormat.DontCare);
pictureBox1.Image = croppedBitmap;

I tried it in Visual studio 2012 using C#. I found this solution from this page

Use DateTime.ToString with the specified format MM.dd.yyyy:

this.TextBox3.Text = DateTime.Now.ToString("MM.dd.yyyy");

Here, MM means the month from 01 to 12, dd means the day from 01 to 31 and yyyy means the year as a four-digit number.

Javascript Function

<script type="text/javascript">
    function print_r(theObj){ 
       if(theObj.constructor == Array || theObj.constructor == Object){ 
          document.write("<ul>") 
          for(var p in theObj){ 
             if(theObj[p].constructor == Array || theObj[p].constructor == Object){ 
                document.write("<li>["+p+"] => "+typeof(theObj)+"</li>"); 
                document.write("<ul>") 
                print_r(theObj[p]); 
                document.write("</ul>") 
             } else { 
                document.write("<li>["+p+"] => "+theObj[p]+"</li>"); 
             } 
          } 
          document.write("</ul>") 
       } 
    } 
</script>

Printing Object

<script type="text/javascript">
print_r(JAVACRIPT_ARRAY_OR_OBJECT);
</script> 

via print_r in Javascript

The previously posted solutions have two quirks:

1. In Chrome the selection via .select() doesn't stick - adding a slight timeout resolves this issue.
2. It's impossible to place the cursor at a desired point after focus.

Here's a complete solution that selects all text on focus, but allows selecting a specific cursor point after focus.

$(function () {
    var focusedElement;
    $(document).on('focus', 'input', function () {
        if (focusedElement == this) return; //already focused, return so user can now place cursor at specific point in input.
        focusedElement = this;
        setTimeout(function () { focusedElement.select(); }, 100); //select all text in any field on focus for easy re-entry. Delay sightly to allow focus to "stick" before selecting.
    });
});

You can use the CSS3 Linear Gradient property along with your background-image like this:

#landing-wrapper {
    display:table;
    width:100%;
    background: linear-gradient( rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5) ), url('landingpagepic.jpg');
    background-position:center top;
    height:350px;
}

Here's a demo:

#landing-wrapper {_x000D_
  display: table;_x000D_
  width: 100%;_x000D_
  background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('http://placehold.it/350x150');_x000D_
  background-position: center top;_x000D_
  height: 350px;_x000D_
  color: white;_x000D_
}

<div id="landing-wrapper">Lorem ipsum dolor ismet.</div>

Easiar approach on datatable could be:

int minLavel = Convert.ToInt32(dt.Compute("min([AccountLevel])", string.Empty));

If you are solely interested in outputting the JSON somewhere in your HTML, you could also use a pipe inside an interpolation. For example:

<p> {{ product | json }} </p>

I am not entirely sure it works for every AngularJS version, but it works perfectly in my Ionic App (which uses Angular 2+).

if your value is a pure text (like 'test') you could use the text() method as well. like this:

$('div.total-title').text('test');

anyway, about the problem you are sharing, I think you might be calling the JavaScript code before the HTML code for the DIV is being sent to the browser. make sure you are calling the jQuery line in a <script> tag after the <div>, or in a statement like this:

$(document).ready(
    function() {
        $('div.total-title').text('test');
    }
);

this way the script executes after the HTML of the div is parsed by the browser.

You can add a custom legend documentation

first = [1, 2, 4, 5, 4]
second = [3, 4, 2, 2, 3]
plt.plot(first, 'g--', second, 'r--')
plt.legend(['First List', 'Second List'], loc='upper left')
plt.show()

You could try:

.modal.modal-wide .modal-dialog {
  width: 90%;
}

.modal-wide .modal-body {
  overflow-y: auto;
}

Just add .modal-wide to your classes

I had this code which was causing the error:

for t in dfObj['time']:
  if type(t) == str:
    the_date = dateutil.parser.parse(t)
    loc_dt_int = int(the_date.timestamp())
    dfObj.loc[t == dfObj.time, 'time'] = loc_dt_int

I changed it to this:

for t in dfObj['time']:
  try:
    the_date = dateutil.parser.parse(t)
    loc_dt_int = int(the_date.timestamp())
    dfObj.loc[t == dfObj.time, 'time'] = loc_dt_int
  except Exception as e:
    print(e)
    continue

to avoid the comparison, which is throwing the warning - as stated above. I only had to avoid the exception because of dfObj.loc in the for loop, maybe there is a way to tell it not to check the rows it has already changed.

String permutaions using Es6

Using reduce() method

const permutations = str => {_x000D_
  if (str.length <= 2) _x000D_
  return str.length === 2 ? [str, str[1] + str[0]] : [str];_x000D_
  _x000D_
  return str_x000D_
    .split('')_x000D_
    .reduce(_x000D_
      (acc, letter, index) =>_x000D_
        acc.concat(permutations(str.slice(0, index) + str.slice(index + 1)).map(val => letter + val)),_x000D_
      [] _x000D_
    );_x000D_
};_x000D_
_x000D_
console.log(permutations('STR'));

You need to define the enum outside of the class.

public enum card_suits
{
    Clubs,
    Hearts,
    Spades,
    Diamonds
}

public class Card
{
     // ...

That being said, you may also want to consider using the standard naming guidelines for Enums, which would be CardSuit instead of card_suits, since Pascal Casing is suggested, and the enum is not marked with the FlagsAttribute, suggesting multiple values are appropriate in a single variable.

This answer is for Ubuntu users looking for a solution without writing SQL queries.

The following is the initial screen you'll get after opening it

In the top right, where it says Administration, click in the arrow to the right

This will show Schema (instead of Administration) and it's possible to see a sys database.

Right click in the grey area after functions and click Create Schema...

This will open the following where I'm creating a table named StackOverflow_db

Clicking in the bottom right button that says "Apply",

And in this new view click in "Apply" too. In the end you'll get a database called StackOverflow_db

It's a common interview question asked by Facebook etc. I don't think it's a good idea to use the Newton's method in an interview. What if the interviewer ask you the mechanism of the Newton's method when you don't really understand it?

I provided a binary search based solution in Java which I believe everyone can understand.

public int sqrt(int x) {

    if(x < 0) return -1;
    if(x == 0 || x == 1) return x;

    int lowerbound = 1;
    int upperbound = x;
    int root = lowerbound + (upperbound - lowerbound)/2;

    while(root > x/root || root+1 <= x/(root+1)){
        if(root > x/root){
            upperbound = root;
        } else {
            lowerbound = root;
        }
        root = lowerbound + (upperbound - lowerbound)/2;
    }
    return root;
}

You can test my code here: leetcode: sqrt(x)

I don't understand

days, hours, minutes = td.days, td.seconds // 3600, td.seconds // 60 % 60

how about this

days, hours, minutes = td.days, td.seconds // 3600, td.seconds % 3600 / 60.0

You get minutes and seconds of a minute as a float.

I'm assuming you're going to also want to check for it being either undefined or null. If so, I suggest:

myVar == null

This is one of the only times a double equals is very helpful as it will evaluate to true when myVar is undefined or null, but it will evaluate to false when it is other falsey values such as 0, false, '', and NaN.

This the actual the source code for Lodash's isNil method.

Apache Commons Lang provides org.apache.commons.lang.StringUtils.isNumeric(CharSequence cs), which takes as an argument a String and checks if it consists of purely numeric characters (including numbers from non-Latin scripts). That method returns false if there are characters such as space, minus, plus, and decimal separators such as comma and dot.

Other methods of that class allow for further numeric checks.

int is inherently finite; there's no value that satisfies your requirements.

If you're willing to change the type of b, though, you can do this with operator overrides:

class infinitytype {};

template<typename T>
bool operator>(const T &, const infinitytype &) {
  return false;
}

template<typename T>
bool operator<(const T &, const infinitytype &) {
  return true;
}

bool operator<(const infinitytype &, const infinitytype &) {
  return false;
}


bool operator>(const infinitytype &, const infinitytype &) {
  return false;
}

// add operator==, operator!=, operator>=, operator<=...

int main() {
  std::cout << ( INT_MAX < infinitytype() ); // true
}

In addition to the other answers, a further example of the variability of word size (from one system to the next) is in the paper Smashing The Stack For Fun And Profit by Aleph One:

We must remember that memory can only be addressed in multiples of the word size. A word in our case is 4 bytes, or 32 bits. So our 5 byte buffer is really going to take 8 bytes (2 words) of memory, and our 10 byte buffer is going to take 12 bytes (3 words) of memory.

more_itertools.unzip() is easy to read, and it also works with generators.

import more_itertools
l = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]
r = more_itertools.unzip(l) # a tuple of generators.
r = list(map(list, r))      # a list of lists

or equivalently

import more_itertools
l = more_itertools.chunked(range(1,10), 3)
r = more_itertools.unzip(l) # a tuple of generators.
r = list(map(list, r))      # a list of lists

It is the bitwise xor operator in java which results 1 for different value (ie 1 ^ 0 = 1) and 0 for same value (ie 0 ^ 0 = 0).

python -m pip

really works for the problem Fatal error in launcher: Unable to create process using '"'.Worked on Windows 10

I think your issue may be in the url pattern. Changing

<servlet-mapping>
    <servlet-name>Register</servlet-name>
    <url-pattern>/Register</url-pattern>
</servlet-mapping>

and

<form action="/Register" method="post">

may fix your problem

Here is a more efficient way of fading out an element:

function fade(element) {
    var op = 1;  // initial opacity
    var timer = setInterval(function () {
        if (op <= 0.1){
            clearInterval(timer);
            element.style.display = 'none';
        }
        element.style.opacity = op;
        element.style.filter = 'alpha(opacity=' + op * 100 + ")";
        op -= op * 0.1;
    }, 50);
}

you can do the reverse for fade in

setInterval or setTimeout should not get a string as argument

google the evils of eval to know why

And here is a more efficient way of fading in an element.

function unfade(element) {
    var op = 0.1;  // initial opacity
    element.style.display = 'block';
    var timer = setInterval(function () {
        if (op >= 1){
            clearInterval(timer);
        }
        element.style.opacity = op;
        element.style.filter = 'alpha(opacity=' + op * 100 + ")";
        op += op * 0.1;
    }, 10);
}

Implement onFocusChange of setOnFocusChangeListener and there's a boolean parameter for hasFocus. When this is false, you've lost focus to another control.

 EditText txtEdit = (EditText) findViewById(R.id.edittxt);

 txtEdit.setOnFocusChangeListener(new OnFocusChangeListener() {          
        @Override
        public void onFocusChange(View v, boolean hasFocus) {
            if (!hasFocus) {
               // code to execute when EditText loses focus
            }
        }
    });

As the answer is marked correct then it's a Windows Dos prompt script and this will work too:

find "string" status.txt >nul && call "my batch file.bat"

The first is the original for loop. You initialize a variable, set a terminating condition, and provide a state incrementing/decrementing counter (There are exceptions, but this is the classic)

For that,

for (int i=0;i<myString.length;i++) { 
  System.out.println(myString[i]); 
}

is correct.

For Java 5 an alternative was proposed. Any thing that implements iterable can be supported. This is particularly nice in Collections. For example you can iterate the list like this

List<String> list = ....load up with stuff

for (String string : list) {
  System.out.println(string);
}

instead of

for (int i=0; i<list.size();i++) {
  System.out.println(list.get(i));
}

So it's just an alternative notation really. Any item that implements Iterable (i.e. can return an iterator) can be written that way.

What's happening behind the scenes is somethig like this: (more efficient, but I'm writing it explicitly)

Iterator<String> it = list.iterator();
while (it.hasNext()) {
  String string=it.next();
  System.out.println(string);
}

In the end it's just syntactic sugar, but rather convenient.

if you are using the fedora distro, you can change the file

/etc/containers/registries.conf

Adding domain docker.io

Through this example copy and retain can be explained like:

NSMutableString *someName = [NSMutableString stringWithString:@"Chris"];

Person *p = [[[Person alloc] init] autorelease];
p.name = someName;

[someName setString:@"Debajit"];

if the property is of type copy then ,

a new copy will be created for the [Person name] string that will hold the contents of someName string. Now any operation on someName string will have no effect on [Person name].

[Person name] and someName strings will have different memory addresses.

But in case of retain,

both the [Person name] will hold the same memory address as of somename string, just the retain count of somename string will be incremented by 1.

So any change in somename string will be reflected in [Person name] string.

It's in an additional download. Use this menu item:

Xcode > Open Developer Tool > More Developer Tools...

and get "Hardware IO Tools for Xcode".

For Xcode 8+, get "Additional Tools for Xcode [version]".

Double-click on a .prefPane file to install. If you already have an older .prefPane installed, you'll need to remove it from /Library/PreferencePanes.

In the first case you are simply starting a new thread while in the second case you are entering in the thread pool.

The thread pool job is to share and recycle threads. It allows to avoid losing a few millisecond every time we need to create a new thread.

There are a several ways to enter the thread pool:

• with the TPL (Task Parallel Library) like you did
• by calling ThreadPool.QueueUserWorkItem
• by calling BeginInvoke on a delegate
• when you use a BackgroundWorker

I was facing a similar error because the bucket was in region us-west-2 and the URL pattern had bucketname in the path. Once, I changed the URL pattern to have bucketname as URL subdomain to grab the files and it worked.

For eg previous URL was

https://s3.amazonaws.com/bucketname/filePath/filename

Then I replaced it as

https://bucketname.s3.amazonaws.com/filePath/filename

IDENTITY(int, 1, 1) should do it if you are doing a select into. In SQL 2000, I use to just put the results in a temp table and query that afterwords.

I found that when I press the button HOME the onStop() method is called.You can use the following piece of code to monitor it:

@Override
    protected void onStop() 
    {
        super.onStop();
        Log.d(tag, "MYonStop is called");
        // insert here your instructions
    }

I am a new to WPF, but not in .NET.

I have spent five hours trying to add a PNG file to a "WPF Custom Control Library Project" in .NET 3.5 (Visual Studio 2010) and setting it as a background of an image-inherited control.

Nothing relative with URIs worked. I can not imagine why there is no method to get a URI from a resource file, through IntelliSense, maybe as:

Properties.Resources.ResourceManager.GetURI("my_image");

I've tried a lot of URIs and played with ResourceManager, and Assembly's GetManifest methods, but all there were exceptions or NULL values.

Here I pot the code that worked for me:

// Convert the image in resources to a Stream
Stream ms = new MemoryStream()
Properties.Resources.MyImage.Save(ms, ImageFormat.Png);

// Create a BitmapImage with the stream.
BitmapImage bitmap = new BitmapImage();
bitmap.BeginInit();
bitmap.StreamSource = ms;
bitmap.EndInit();

// Set as source
Source = bitmap;

The question may be getting old, but I've struggled with the same issue just now.

After deleting passwords with resetroot.bat, as instructed by Nedshed, you can choose another password by going to http://localhost/security/index.php

Lua implementation, for posterity:

function levenshtein_distance(str1, str2)
    local len1, len2 = #str1, #str2
    local char1, char2, distance = {}, {}, {}
    str1:gsub('.', function (c) table.insert(char1, c) end)
    str2:gsub('.', function (c) table.insert(char2, c) end)
    for i = 0, len1 do distance[i] = {} end
    for i = 0, len1 do distance[i][0] = i end
    for i = 0, len2 do distance[0][i] = i end
    for i = 1, len1 do
        for j = 1, len2 do
            distance[i][j] = math.min(
                distance[i-1][j  ] + 1,
                distance[i  ][j-1] + 1,
                distance[i-1][j-1] + (char1[i] == char2[j] and 0 or 1)
                )
        end
    end
    return distance[len1][len2]
end

If a string must not contain @, every character must be another character than @:

/^[^@]*$/

This will match any string of any length that does not contain @.

Another possible solution would be to invert the boolean result of /@/.

In a GET request, the request parameters are taken from the query string (the data following the question mark on the URL). For example, the URL http://hostname.com?p1=v1&p2=v2 contains two request parameters - - p1 and p2. In a POST request, the request parameters are taken from both query string and the posted data which is encoded in the body of the request.

This example demonstrates how to include the value of a request parameter in the generated output:

Hello <b><%= request.getParameter("name") %></b>!

If the page was accessed with the URL:

http://hostname.com/mywebapp/mypage.jsp?name=John+Smith

the resulting output would be:

Hello <b>John Smith</b>!

If name is not specified on the query string, the output would be:

Hello <b>null</b>!

This example uses the value of a query parameter in a scriptlet:

<%
    if (request.getParameter("name") == null) {
        out.println("Please enter your name.");
    } else {
        out.println("Hello <b>"+request. getParameter("name")+"</b>!");
    }
%>

Above, Abhishek mentions the command line differences specified in two URLS:

1. PhoneGap: http://docs.phonegap.com/en/edge/guide_cli_index.md.html

2. Cordova: http://cordova.apache.org/docs/en/3.0.0/guide_cli_index.md.html#The%20Command-line%20Interface

One thing to point out is that, as of this post, the phonegap one looks to be almost the same as the cordova one, and is probably not an accurate image of the command line option differences. As such, I installed both on my system so I could look at the differences.

These are just a few of them. Hopefully they are brought more in sync sometime. If anyone has better information, please tell me.

1. Adding platforms seems to be done differently between the two commands ( phonegap uses "install" command, cordova uses "platform add" command )
2. Adding/creating projects seems to be the same between the two commands ( same command line options supported )
3. Obviously, as has been stated, phonegap can use PhoneGap Build, so it has the corresponding options to trigger that or local builds
4. Quite a few other significant command line differences, simply by running "cordova help" and "phonegap help" and comparing the two.

I guess my point is that the phonegap CLI documention mentioned quite often is not really for the phonegap CLI, but for the cordova CLI, at this time. Please tell me if I am missing something. Thanks.

Use split and map function:

var str = "123, 124, 234,252";
var arr = str.split(",");
arr = arr.map(function (val) { return +val + 1; });

Notice +val - string is casted to a number.

Or shorter:

var str = "123, 124, 234,252";
var arr = str.split(",").map(function (val) { return +val + 1; });

edit 2015.07.29

Today I'd advise against using + operator to cast variable to a number. Instead I'd go with a more explicit but also more readable Number call:

var str = "123, 124, 234,252";_x000D_
var arr = str.split(",").map(function (val) {_x000D_
  return Number(val) + 1;_x000D_
});_x000D_
console.log(arr);

edit 2017.03.09

ECMAScript 2015 introduced arrow function so it could be used instead to make the code more concise:

var str = "123, 124, 234,252";_x000D_
var arr = str.split(",").map(val => Number(val) + 1);_x000D_
console.log(arr);

Here's a pure JavaScript animated scroll version for no-jQuery'ers :D

var stepTime = 20;
var docBody = document.body;
var focElem = document.documentElement;

var scrollAnimationStep = function (initPos, stepAmount) {
    var newPos = initPos - stepAmount > 0 ? initPos - stepAmount : 0;

    docBody.scrollTop = focElem.scrollTop = newPos;

    newPos && setTimeout(function () {
        scrollAnimationStep(newPos, stepAmount);
    }, stepTime);
}

var scrollTopAnimated = function (speed) {
    var topOffset = docBody.scrollTop || focElem.scrollTop;
    var stepAmount = topOffset;

    speed && (stepAmount = (topOffset * stepTime)/speed);

    scrollAnimationStep(topOffset, stepAmount);
};

And then:

<button onclick="scrollTopAnimated(1000)">Scroll Top</button>

What the error is telling, is that you can't convert an entire list into an integer. You could get an index from the list and convert that into an integer:

x = ["0", "1", "2"] 
y = int(x[0]) #accessing the zeroth element

If you're trying to convert a whole list into an integer, you are going to have to convert the list into a string first:

x = ["0", "1", "2"]
y = ''.join(x) # converting list into string
z = int(y)

If your list elements are not strings, you'll have to convert them to strings before using str.join:

x = [0, 1, 2]
y = ''.join(map(str, x))
z = int(y)

Also, as stated above, make sure that you're not returning a nested list.

Since we are talking about extracting lines of text from a text file, I will give an special case where you want to extract all lines that match a certain pattern.

myfile content:
=====================
line1 not needed
line2 also discarded
[Data]
first data line
second data line
=====================
sed -n '/Data/,$p' myfile

Will print the [Data] line and the remaining. If you want the text from line1 to the pattern, you type: sed -n '1,/Data/p' myfile. Furthermore, if you know two pattern (better be unique in your text), both the beginning and end line of the range can be specified with matches.

sed -n '/BEGIN_MARK/,/END_MARK/p' myfile

SELECT COUNT(job_id) FROM jobs WHERE posted_date < NOW()-30;

Now() returns the current Date and Time.

I wrote two using statements inside a try/catch block and I could see the exception was being caught the same way if it's placed within the inner using statement just as ShaneLS example.

     try
     {
       using (var con = new SqlConnection(@"Data Source=..."))
       {
         var cad = "INSERT INTO table VALUES (@r1,@r2,@r3)";

         using (var insertCommand = new SqlCommand(cad, con))
         {
           insertCommand.Parameters.AddWithValue("@r1", atxt);
           insertCommand.Parameters.AddWithValue("@r2", btxt);
           insertCommand.Parameters.AddWithValue("@r3", ctxt);
           con.Open();
           insertCommand.ExecuteNonQuery();
         }
       }
     }
     catch (Exception ex)
     {
       MessageBox.Show("Error: " + ex.Message, "UsingTest", MessageBoxButtons.OK, MessageBoxIcon.Error);
     }

No matter where's the try/catch placed, the exception will be caught without issues.

Good planning, good design and good programmers. You get all that togheter and you will not spend 30 minutes to write one line. Yes, all projects require you to stop and plan,think over,discuss, test and debug but at two lines per day every company would need an army to get tetris to work...

Bottom line, if you were working for me at 2 lines per hours, you'd better be getting me a lot of coffes andmassaging my feets so you didn't get fired.

in c#.net

this.WindowState = FormWindowState.Minimized

You can also add a .pth file containing the desired directory in either your c:\PythonX.X folder, or your \site-packages folder, which tends to be my preferred method when I'm developing a Python package.

See here for more information.

Check this link . You were missing . before myButton. It was a small error. :)

.myButton{
    background:url(./images/but.png) no-repeat;
    cursor:pointer;
    border:none;
    width:100px;
    height:100px;
}

.myButton:active  /* use Dot here */
{   
    background:url(./images/but2.png) no-repeat;
}

API stands for Application Programming Interface. It is a way for your application to interact with other applications via an endpoint. Conversely, you can build out an API for your application that is available for other developers to utilize/connect to via HTTP methods, which are RESTful. Representational State Transfer (REST):

• GET: Retrieve data from an API endpoint.
• PUT: Update data via an API - similar to POST but more about updating info.
• POST: Send data to an API.
• DELETE: Remove data from given API.

Use $push to update document and insert new value inside an array.

find:

db.getCollection('noti').find({})

result for find:

{
    "_id" : ObjectId("5bc061f05a4c0511a9252e88"),
    "count" : 1.0,
    "color" : "green",
    "icon" : "circle",
    "graph" : [ 
        {
            "date" : ISODate("2018-10-24T08:55:13.331Z"),
            "count" : 2.0
        }
    ],
    "name" : "online visitor",
    "read" : false,
    "date" : ISODate("2018-10-12T08:57:20.853Z"),
    "__v" : 0.0
}

update:

db.getCollection('noti').findOneAndUpdate(
   { _id: ObjectId("5bc061f05a4c0511a9252e88") }, 
   { $push: { 
             graph: {
               "date" : ISODate("2018-10-24T08:55:13.331Z"),
               "count" : 3.0
               }  
           } 
   })

result for update:

{
    "_id" : ObjectId("5bc061f05a4c0511a9252e88"),
    "count" : 1.0,
    "color" : "green",
    "icon" : "circle",
    "graph" : [ 
        {
            "date" : ISODate("2018-10-24T08:55:13.331Z"),
            "count" : 2.0
        }, 
        {
            "date" : ISODate("2018-10-24T08:55:13.331Z"),
            "count" : 3.0
        }
    ],
    "name" : "online visitor",
    "read" : false,
    "date" : ISODate("2018-10-12T08:57:20.853Z"),
    "__v" : 0.0
}

Use Jenkins.

Jenkins is the recent fork by the core developers of Hudson. To understand why, you need to know the history of the project. It was originally open source and supported by Sun. Like much of what Sun did, it was fairly open, but there was a bit of benign neglect. The source, trackers, website, etc. were hosted by Sun on their relatively closed java.net platform.

Then Oracle bought Sun. For various reasons Oracle has not been shy about leveraging what it perceives as its assets. Those include some control over the logistic platform of Hudson, and particularly control over the Hudson name. Many users and contributors weren't comfortable with that and decided to leave.

So it comes down to what Hudson vs Jenkins offers. Both Oracle's Hudson and Jenkins have the code. Hudson has Oracle and Sonatype's corporate support and the brand. Jenkins has most of the core developers, the community, and (so far) much more actual work.

Read that post I linked up top, then read the rest of these in chronological order. For balance you can read the Hudson/Oracle take on it. It's pretty clear to me who is playing defensive and who has real intentions for the project.

I've played around with it and I think I have a solution. The following example shows how to set Box-Shadow so that it will only show a shadow for the inset top and bottom of an element.

Legend: insetOption leftPosition topPosition blurStrength spreadStrength color

Description
The key to accomplishing this is to set the blur value to <= the negative of the spread value (ex. inset 0px 5px -?px 5px #000; the blur value should be -5 and lower) and to also keep the blur value > 0 when subtracted from the primary positioning value (ex. using the example from above, the blur value should be -9 and up, thus giving us an optimal value for the the blur to be between -5 and -9).

Solution

.styleName {   
/* for IE 8 and lower */
background-color:#888; filter: progid:DXImageTransform.Microsoft.dropShadow(color=#FFFFCC, offX=0, offY=0, positive=true);  

/* for IE 9 */ 
box-shadow: inset 0px 2px -2px 2px rgba(255,255,204,0.7), inset 0px -2px -2px 2px rgba(255,255,204,0.7); 

/* for webkit browsers */ 
-webkit-box-shadow: inset 0px 2px -2px 2px rgba(255,255,204,0.7), inset 0px -2px -2px 2px rgba(255,255,204,0.7); 

/* for firefox 3.6+ */
-moz-box-shadow: inset 0px 2px -2px 2px rgba(255,255,204,0.7), inset 0px -2px -2px 2px rgba(255,255,204,0.7);   
}

-Ldir
Add directory dir to the list of directories to be searched for -l.

Adding the following on top of your JS file will tell JSHint to supress the radix warning:

/*jshint -W065 */

See also: http://jshint.com/docs/#options

That's not how you send file on postman. What you did is sending a string which is the path of your image, nothing more.

What you should do is;

1. After setting request method to POST, click to the 'body' tab.
2. Select form-data. At first line, you'll see text boxes named key and value. Write 'image' to the key. You'll see value type which is set to 'text' as default. Make it File and upload your file.
3. Then select 'raw' and paste your json file. Also just next to the binary choice, You'll see 'Text' is clicked. Make it JSON.

You're ready to go.

In your Django view,

from rest_framework.views import APIView
from rest_framework.parsers import MultiPartParser
from rest_framework.decorators import parser_classes

@parser_classes((MultiPartParser, ))
class UploadFileAndJson(APIView):

    def post(self, request, format=None):
        thumbnail = request.FILES["file"]
        info = json.loads(request.data['info'])
        ...
        return HttpResponse()

The Safe Area Layout Guide helps avoid underlapping System UI elements when positioning content and controls.

The Safe Area is the area in between System UI elements which are Status Bar, Navigation Bar and Tool Bar or Tab Bar. So when you add a Status bar to your app, the Safe Area shrink. When you add a Navigation Bar to your app, the Safe Area shrinks again.

On the iPhone X, the Safe Area provides additional inset from the top and bottom screen edges in portrait even when no bar is shown. In landscape, the Safe Area is inset from the sides of the screens and the home indicator.

This is taken from Apple's video Designing for iPhone X where they also visualize how different elements affect the Safe Area.

I suggest using pip in place of easy_install. With pip, you can list all installed packages and their versions with

pip freeze

In most linux systems, you can pipe this to grep(or findstr on Windows) to find the row for the particular package you're interested in:

Linux:
$ pip freeze | grep lxml
lxml==2.3

Windows:
c:\> pip freeze | findstr lxml
lxml==2.3

For an individual module, you can try the __version__ attribute, however there are modules without it:

$ python -c "import requests; print(requests.__version__)"
2.14.2
$ python -c "import lxml; print(lxml.__version__)"
Traceback (most recent call last):
  File "<string>", line 1, in <module>
AttributeError: 'module' object has no attribute '__version__'

Lastly, as the commands in your question are prefixed with sudo, it appears you're installing to the global python environment. Strongly advise to take look into python virtual environment managers, for example virtualenvwrapper

The title attribute also works well with other html elements, for example a link...

<a title="hover text" ng-href="{{getUrl()}}"> download link
</a>

Don't store it if possible. Just read through it if you are memory constrained. You can use a StreamReader:

using (var reader = new StreamReader("file.txt"))
{
    var line = reader.ReadLine();
    // process line here
}

This can be wrapped in a method which yields strings per line read if you want to use LINQ.

with open('path/to/file') as infile: # try open('...', 'rb') as well
    answer = [line.strip().split(',') for line in infile]

If you want the numbers as ints:

with open('path/to/file') as infile:
    answer = [[int(i) for i in line.strip().split(',')] for line in infile]

Simple solution:

/\s{2,}/

This matches all occurrences of one or more whitespace characters. If you need to match the entire line, but only if it contains two or more consecutive whitespace characters:

/^.*\s{2,}.*$/

If the whitespaces don't need to be consecutive:

/^(.*\s.*){2,}$/

It will work.

long yourmilliseconds = System.currentTimeMillis();
SimpleDateFormat sdf = new SimpleDateFormat("MMM dd,yyyy HH:mm");    
Date resultdate = new Date(yourmilliseconds);
System.out.println(sdf.format(resultdate));

I'd probably go with this (I know its not pure linq), keep a reference to the original list if you want to retain all items, and you should find the updated values are in there:

 foreach (var mc in list.Where(x => x.Name == "height"))  
     mc.Value = 30;

Other answers are correct but do it in a short way like

if(editText.getText().toString().isEmpty()) {
     // editText is empty
} else {
     // editText is not empty
}

It's was great if delete return the delete pair of the hash. I'm doing this:

hash = {a: 1, b: 2, c: 3}
{b: hash.delete(:b)} # => {:b=>2}
hash  # => {:a=>1, :c=>3} 

try this it's very easy to use and tested on IE and Safari and FF and worked fine and beside no need for many div around it just add id and it will work fine, after you link you Js and Css files. FaceScroll Custom scrollbar

hope it help's

Edit Step 1: Add the below script to the section of your page:

<link href="general.css" rel="stylesheet" type="text/css">

<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.8.18/jquery-ui.min.js"></script>
<script type="text/javascript" src="jquery.ui.touch-punch.min.js"></script>

<script type="text/javascript" src="facescroll.js"></script>
<script type="text/javascript">
    jQuery(function(){ // on page DOM load
        $('#demo1').alternateScroll();
        $('#demo2').alternateScroll({ 'vertical-bar-class': 'styled-v-bar', 'hide-bars': false });  
    })
</script>

Step 2: Then in the BODY of your page, add the below sample HTML block to your page.

<p><b>Scrollbar (default style) shows onMouseover</b></p>

<div id="demo1" style="width:300px; height:250px; padding:8px; background:lightyellow; border:1px solid gray; resize:both; overflow:scroll">

From Wikipedia- Gunpowder, also known since in the late 19th century as black powder, was the first chemical explosive and the only one known until the mid 1800s.[2] It is a mixture of sulfur, charcoal, and potassium nitrate (saltpeter) - with the sulfur and charcoal acting as fuels, while the saltpeter works as an oxidizer.[3] Because of its 
</div>

<br />

<p><b>Scrollbar (alternate style), always shown</b></p>

<div id="demo2" style="width:400px; height:130px; padding:10px; padding-right:8px; background:lightyellow; border:1px solid gray; overflow:scroll; resize:both;">

From Wikipedia- Gunpowder, also known since in the late 19th century as black powder, was the first chemical explosive and the only one known until the mid 1800s.[2] It is a mixture of sulfur, charcoal, and potassium nitrate (saltpeter) - with the sulfur and charcoal acting as fuels, while the saltpeter works as an oxidizer.[3] Because of its 
</div>

You can use ax.figure.savefig():

import pandas as pd

s = pd.Series([0, 1])
ax = s.plot.hist()
ax.figure.savefig('demo-file.pdf')

This has no practical benefit over ax.get_figure().savefig() as suggested in Philip Cloud's answer, so you can pick the option you find the most aesthetically pleasing. In fact, get_figure() simply returns self.figure:

# Source from snippet linked above
def get_figure(self):
    """Return the `.Figure` instance the artist belongs to."""
    return self.figure

click: WAMP icon->Apache->Apache modules->chose rewrite_module

and do restart for all services.

You could use use max and min with dict.get:

maximum = max(mydict, key=mydict.get)  # Just use 'min' instead of 'max' for minimum.
print(maximum, mydict[maximum])
# D 87

If you read the help file for ?boxplot, you'll see there is a names= parameter.

     boxplot(apple, banana, watermelon, names=c("apple","banana","watermelon"))

If you haven't committed changes

If your changes are compatible with the other branch

This is the case from the question because the OP wants to commit to a new branch and also applies if your changes are compatible with the target branch without triggering an overwrite.

As in the accepted answer by John Brodie, you can simply checkout the new branch and commit the work:

git checkout -b branch_name
git add <files>
git commit -m "message"

If your changes are incompatible with the other branch

If you get the error:

error: Your local changes to the following files would be overwritten by checkout:
...
Please commit your changes or stash them before you switch branches

Then you can stash your work, create a new branch, then pop your stash changes, and resolve the conflicts:

git stash
git checkout -b branch_name
git stash pop

It will be as if you had made those changes after creating the new branch. Then you can commit as usual:

git add <files>
git commit -m "message"

If you have committed changes

If you want to keep the commits in the original branch

See the answer by Carl Norum with cherry-picking, which is the right tool in this case:

git checkout <target name>
git cherry-pick <original branch>

If you don't want to keep the commits in the original branch

See the answer by joeytwiddle on this potential duplicate. Follow any of the above steps as appropriate, then roll back the original branch:

git branch -f <original branch> <earlier commit id>

If you have pushed your changes to a shared remote like GitHub, you should not attempt this roll-back unless you know what you are doing.

I seem to be having success doing

org.jboss.logmanager.Logger logger = org.jboss.logmanager.Logger.getLogger("");
logger.setLevel(java.util.logging.Level.ALL);

Then to get detailed logging from netty, the following has done it

org.slf4j.impl.SimpleLogger.setLevel(org.slf4j.impl.SimpleLogger.TRACE);

I added the div line and it did the trick:

<div style="text-align:center">
<ul>
<li>test</li>
<li>test</li>
<li>test</li>
<li>test</li>
<li>test</li>
</ul>
</div>

I believe the command you are looking for is start /b *command*

For unix, nohup represents 'no hangup', which is slightly different than a background job (which would be *command* &. I believe that the above command should be similar to a background job for windows.

array_slice() can be used to extract parts of the array, and the union array operator (+) can recombine the parts.

$res = array_slice($array, 0, 3, true) +
    array("my_key" => "my_value") +
    array_slice($array, 3, count($array)-3, true);

This example:

$array = array(
  'zero'  => '0',
  'one'   => '1',
  'two'   => '2',
  'three' => '3',
);
$res = array_slice($array, 0, 3, true) +
    array("my_key" => "my_value") +
    array_slice($array, 3, count($array) - 1, true) ;
print_r($res);

gives:

Array
(
    [zero] => 0
    [one] => 1
    [two] => 2
    [my_key] => my_value
    [three] => 3
)

I had this problem in my .NET Framework Web API, because my model existed in a .NET Standard project that referenced a different version of data annotations.

Adding the ReadAsAsync line below highlighted the cause for me:

public async Task<HttpResponseMessage> Register(RegistrationDetails registrationDetails)
{
    var regDetails = await Request.Content.ReadAsAsync<RegistrationDetails>();

Here's a testing snippet for you to test it's uniquenes. inspired by @scalabl3's comment

Funny thing is, you could generate 2 in a row that were identical, of course at mind-boggling levels of coincidence, luck and divine intervention, yet despite the unfathomable odds, it's still possible! :D Yes, it won't happen. just saying for the amusement of thinking about that moment when you created a duplicate! Screenshot video! – scalabl3 Oct 20 '15 at 19:11

If you feel lucky, check the checkbox, it only checks the currently generated id's. If you wish a history check, leave it unchecked. Please note, you might run out of ram at some point if you leave it unchecked. I tried to make it cpu friendly so you can abort quickly when needed, just hit the run snippet button again or leave the page.

Math.log2 = Math.log2 || function(n){ return Math.log(n) / Math.log(2); }_x000D_
  Math.trueRandom = (function() {_x000D_
  var crypt = window.crypto || window.msCrypto;_x000D_
_x000D_
  if (crypt && crypt.getRandomValues) {_x000D_
      // if we have a crypto library, use it_x000D_
      var random = function(min, max) {_x000D_
          var rval = 0;_x000D_
          var range = max - min;_x000D_
          if (range < 2) {_x000D_
              return min;_x000D_
          }_x000D_
_x000D_
          var bits_needed = Math.ceil(Math.log2(range));_x000D_
          if (bits_needed > 53) {_x000D_
            throw new Exception("We cannot generate numbers larger than 53 bits.");_x000D_
          }_x000D_
          var bytes_needed = Math.ceil(bits_needed / 8);_x000D_
          var mask = Math.pow(2, bits_needed) - 1;_x000D_
          // 7776 -> (2^13 = 8192) -1 == 8191 or 0x00001111 11111111_x000D_
_x000D_
          // Create byte array and fill with N random numbers_x000D_
          var byteArray = new Uint8Array(bytes_needed);_x000D_
          crypt.getRandomValues(byteArray);_x000D_
_x000D_
          var p = (bytes_needed - 1) * 8;_x000D_
          for(var i = 0; i < bytes_needed; i++ ) {_x000D_
              rval += byteArray[i] * Math.pow(2, p);_x000D_
              p -= 8;_x000D_
          }_x000D_
_x000D_
          // Use & to apply the mask and reduce the number of recursive lookups_x000D_
          rval = rval & mask;_x000D_
_x000D_
          if (rval >= range) {_x000D_
              // Integer out of acceptable range_x000D_
              return random(min, max);_x000D_
          }_x000D_
          // Return an integer that falls within the range_x000D_
          return min + rval;_x000D_
      }_x000D_
      return function() {_x000D_
          var r = random(0, 1000000000) / 1000000000;_x000D_
          return r;_x000D_
      };_x000D_
  } else {_x000D_
      // From http://baagoe.com/en/RandomMusings/javascript/_x000D_
      // Johannes Baagøe <[email protected]>, 2010_x000D_
      function Mash() {_x000D_
          var n = 0xefc8249d;_x000D_
_x000D_
          var mash = function(data) {_x000D_
              data = data.toString();_x000D_
              for (var i = 0; i < data.length; i++) {_x000D_
                  n += data.charCodeAt(i);_x000D_
                  var h = 0.02519603282416938 * n;_x000D_
                  n = h >>> 0;_x000D_
                  h -= n;_x000D_
                  h *= n;_x000D_
                  n = h >>> 0;_x000D_
                  h -= n;_x000D_
                  n += h * 0x100000000; // 2^32_x000D_
              }_x000D_
              return (n >>> 0) * 2.3283064365386963e-10; // 2^-32_x000D_
          };_x000D_
_x000D_
          mash.version = 'Mash 0.9';_x000D_
          return mash;_x000D_
      }_x000D_
_x000D_
      // From http://baagoe.com/en/RandomMusings/javascript/_x000D_
      function Alea() {_x000D_
          return (function(args) {_x000D_
              // Johannes Baagøe <[email protected]>, 2010_x000D_
              var s0 = 0;_x000D_
              var s1 = 0;_x000D_
              var s2 = 0;_x000D_
              var c = 1;_x000D_
_x000D_
              if (args.length == 0) {_x000D_
                  args = [+new Date()];_x000D_
              }_x000D_
              var mash = Mash();_x000D_
              s0 = mash(' ');_x000D_
              s1 = mash(' ');_x000D_
              s2 = mash(' ');_x000D_
_x000D_
              for (var i = 0; i < args.length; i++) {_x000D_
                  s0 -= mash(args[i]);_x000D_
                  if (s0 < 0) {_x000D_
                      s0 += 1;_x000D_
                  }_x000D_
                  s1 -= mash(args[i]);_x000D_
                  if (s1 < 0) {_x000D_
                      s1 += 1;_x000D_
                  }_x000D_
                  s2 -= mash(args[i]);_x000D_
                  if (s2 < 0) {_x000D_
                      s2 += 1;_x000D_
                  }_x000D_
              }_x000D_
              mash = null;_x000D_
_x000D_
              var random = function() {_x000D_
                  var t = 2091639 * s0 + c * 2.3283064365386963e-10; // 2^-32_x000D_
                  s0 = s1;_x000D_
                  s1 = s2;_x000D_
                  return s2 = t - (c = t | 0);_x000D_
              };_x000D_
              random.uint32 = function() {_x000D_
                  return random() * 0x100000000; // 2^32_x000D_
              };_x000D_
              random.fract53 = function() {_x000D_
                  return random() +_x000D_
                      (random() * 0x200000 | 0) * 1.1102230246251565e-16; // 2^-53_x000D_
              };_x000D_
              random.version = 'Alea 0.9';_x000D_
              random.args = args;_x000D_
              return random;_x000D_
_x000D_
          }(Array.prototype.slice.call(arguments)));_x000D_
      };_x000D_
      return Alea();_x000D_
  }_x000D_
}());_x000D_
_x000D_
Math.guid = function() {_x000D_
    return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c)    {_x000D_
      var r = Math.trueRandom() * 16 | 0,_x000D_
          v = c == 'x' ? r : (r & 0x3 | 0x8);_x000D_
      return v.toString(16);_x000D_
  });_x000D_
};_x000D_
function logit(item1, item2) {_x000D_
    console.log("Do "+item1+" and "+item2+" equal? "+(item1 == item2 ? "OMG! take a screenshot and you'll be epic on the world of cryptography, buy a lottery ticket now!":"No they do not. shame. no fame")+ ", runs: "+window.numberofRuns);_x000D_
}_x000D_
numberofRuns = 0;_x000D_
function test() {_x000D_
   window.numberofRuns++;_x000D_
   var x = Math.guid();_x000D_
   var y = Math.guid();_x000D_
   var test = x == y || historyTest(x,y);_x000D_
_x000D_
   logit(x,y);_x000D_
   return test;_x000D_
_x000D_
}_x000D_
historyArr = [];_x000D_
historyCount = 0;_x000D_
function historyTest(item1, item2) {_x000D_
    if(window.luckyDog) {_x000D_
       return false;_x000D_
    }_x000D_
    for(var i = historyCount; i > -1; i--) {_x000D_
        logit(item1,window.historyArr[i]);_x000D_
        if(item1 == history[i]) {_x000D_
            _x000D_
            return true;_x000D_
        }_x000D_
        logit(item2,window.historyArr[i]);_x000D_
        if(item2 == history[i]) {_x000D_
            _x000D_
            return true;_x000D_
        }_x000D_
_x000D_
    }_x000D_
    window.historyArr.push(item1);_x000D_
    window.historyArr.push(item2);_x000D_
    window.historyCount+=2;_x000D_
    return false;_x000D_
}_x000D_
luckyDog = false;_x000D_
document.body.onload = function() {_x000D_
document.getElementById('runit').onclick  = function() {_x000D_
window.luckyDog = document.getElementById('lucky').checked;_x000D_
var val = document.getElementById('input').value_x000D_
if(val.trim() == '0') {_x000D_
    var intervaltimer = window.setInterval(function() {_x000D_
         var test = window.test();_x000D_
         if(test) {_x000D_
            window.clearInterval(intervaltimer);_x000D_
         }_x000D_
    },0);_x000D_
}_x000D_
else {_x000D_
   var num = parseInt(val);_x000D_
   if(num > 0) {_x000D_
        var intervaltimer = window.setInterval(function() {_x000D_
         var test = window.test();_x000D_
         num--;_x000D_
         if(num < 0 || test) {_x000D_
    _x000D_
         window.clearInterval(intervaltimer);_x000D_
         }_x000D_
    },0);_x000D_
   }_x000D_
}_x000D_
};_x000D_
};

Please input how often the calulation should run. set to 0 for forever. Check the checkbox if you feel lucky.<BR/>_x000D_
<input type="text" value="0" id="input"><input type="checkbox" id="lucky"><button id="runit">Run</button><BR/>

I have now tried your suggestions and found that it kinda works,

1. The dialog div is alsways written out in plaintext
2. With the $.post version it actually works in terms that the controller gets called and actually cancels the booking, but the dialog stays open and page doesn't refresh. With the get version window.location = h.ref works great.

Se my "new" script below:

$('a.cancel').click(function() {
        var a = this;               
        $("#dialog").dialog({
            autoOpen: false,
            buttons: {
                "Ja": function() {
                    $.post(a.href);                     
                },
                "Nej": function() { $(this).dialog("close"); }
            },
            modal: true,
            overlay: {
                opacity: 0.5,

            background: "black"
        }
    });
    $("#dialog").dialog('open');
    return false;
});

});

Any clues?

oh and my Action link now looks like this:

<%= Html.ActionLink("Cancel", "Cancel", new { id = v.BookingId }, new  { @class = "cancel" })%>

// 2. Select a database to use 
$db_select = mysqli_select_db($connection, DB_NAME);
if (!$db_select) {
    die("Database selection failed: " . mysqli_error($connection));
}

You got the order of the arguments to mysqli_select_db() backwards. And mysqli_error() requires you to provide a connection argument. mysqli_XXX is not like mysql_XXX, these arguments are no longer optional.

Note also that with mysqli you can specify the DB in mysqli_connect():

$connection = mysqli_connect(DB_SERVER, DB_USER, DB_PASS, DB_NAME);
if (!$connection) {
  die("Database connection failed: " . mysqli_connect_error();
}

You must use mysqli_connect_error(), not mysqli_error(), to get the error from mysqli_connect(), since the latter requires you to supply a valid connection.

Another example. When building a complex map of maps, the computeIfAbsent() method is a replacement for map's get() method. Through chaining of computeIfAbsent() calls together, missing containers are constructed on-the-fly by provided lambda expressions:

  // Stores regional movie ratings
  Map<String, Map<Integer, Set<String>>> regionalMovieRatings = new TreeMap<>();

  // This will throw NullPointerException!
  regionalMovieRatings.get("New York").get(5).add("Boyhood");

  // This will work
  regionalMovieRatings
    .computeIfAbsent("New York", region -> new TreeMap<>())
    .computeIfAbsent(5, rating -> new TreeSet<>())
    .add("Boyhood");

In Swift 3.0 and Xcode 8.0

Encoding :

let userImage:UIImage = UIImage(named: "Your-Image_name")!
let imageData:NSData = UIImagePNGRepresentation(userImage)! as NSData
let dataImage = imageData.base64EncodedString(options: .lineLength64Characters)

Decoding :

let imageData = dataImage
let dataDecode:NSData = NSData(base64Encoded: imageData!, options:.ignoreUnknownCharacters)!
let avatarImage:UIImage = UIImage(data: dataDecode as Data)!
yourImageView.image = avatarImage

• I would suggest you to extract the table using tabula.
• Pass your pdf as an argument to the tabula api and it will return you the table in the form of dataframe.
• Each table in your pdf is returned as one dataframe.
• The table will be returned in a list of dataframea, for working with dataframe you need pandas.

This is my code for extracting pdf.

import pandas as pd
import tabula
file = "filename.pdf"
path = 'enter your directory path here'  + file
df = tabula.read_pdf(path, pages = '1', multiple_tables = True)
print(df)

Please refer to this repo of mine for more details.

There are few steps to upgrade 2/4/5 to Angular 6.

npm uninstall --save-dev angular-cli
npm install --save-dev @angular/cli@latest
npm install

To fix the issue related to "angular.json" :-

ng update @angular/cli --migrate-only --from=1.7.4

Store MIGRATION
https://github.com/ngrx/platform/blob/master/MIGRATION.md#ngrxstore

RXJS MIGRATION
https://www.academind.com/learn/javascript/rxjs-6-what-changed/

Hoping this will help you :)

What could help you is a watchdog. Watchdogs were used extensively in industrial computing in the 1980s. Hardware failures were much more common then - another answer also refers to that period.

A watchdog is a combined hardware/software feature. The hardware is a simple counter that counts down from a number (say 1023) to zero. TTL or other logic could be used.

The software has been designed as such that one routine monitors the correct operation of all essential systems. If this routine completes correctly = finds the computer running fine, it sets the counter back to 1023.

The overall design is so that under normal circumstances, the software prevents that the hardware counter will reach zero. In case the counter reaches zero, the hardware of the counter performs its one-and-only task and resets the entire system. From a counter perspective, zero equals 1024 and the counter continues counting down again.

This watchdog ensures that the attached computer is restarted in a many, many cases of failure. I must admit that I'm not familiar with hardware that is able to perform such a function on today's computers. Interfaces to external hardware are now a lot more complex than they used to be.

An inherent disadvantage of the watchdog is that the system is not available from the time it fails until the watchdog counter reaches zero + reboot time. While that time is generally much shorter than any external or human intervention, the supported equipment will need to be able to proceed without computer control for that timeframe.

A simple solution that worked for me (disabling window scrolling temporarily).

Based on this fiddle: http://jsfiddle.net/dh834zgw/1/

the following snippet (using jquery) will disable the window scroll:

 var curScrollTop = $(window).scrollTop();
 $('html').toggleClass('noscroll').css('top', '-' + curScrollTop + 'px');

And in your css:

html.noscroll{
    position: fixed;
    width: 100%;
    top:0;
    left: 0;
    height: 100%;
    overflow-y: scroll !important;
    z-index: 10;
 }

Now when you remove the modal, don't forget to remove the noscroll class on the html tag:

$('html').toggleClass('noscroll');

you need to write this structure on your bean configuration (this is your datasource):

<bean id="hikariConfig" class="com.zaxxer.hikari.HikariConfig">
    <property name="poolName" value="springHikariCP" />
    <property name="connectionTestQuery" value="SELECT 1" />
    <property name="dataSourceClassName" value="${hibernate.dataSourceClassName}" />
    <property name="maximumPoolSize" value="${hibernate.hikari.maximumPoolSize}" />
    <property name="idleTimeout" value="${hibernate.hikari.idleTimeout}" />

    <property name="dataSourceProperties">
        <props>
            <prop key="url">${dataSource.url}</prop>
            <prop key="user">${dataSource.username}</prop>
            <prop key="password">${dataSource.password}</prop>
        </props>
    </property>
</bean>

<!-- HikariCP configuration -->
<bean id="dataSource" class="com.zaxxer.hikari.HikariDataSource" destroy-method="close">
    <constructor-arg ref="hikariConfig" />
</bean>

This is my example and it is working. You just need to put your properties on hibernate.properties and set it before:

<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    <property name="locations">
        <list>
            <value>classpath:hibernate.properties</value>
        </list>
    </property>
</bean>

Obs.: the versions are
log4j: 1.2.16
springframework: 3.1.4.RELEASE
HikariCP: 1.4.0

Properties file (hibernate.properties):

hibernate.dataSourceClassName=oracle.jdbc.pool.OracleDataSource
hibernate.hikari.maximumPoolSize=10
hibernate.hikari.idleTimeout=30000
dataSource.url=jdbc:oracle:thin:@localhost:1521:xe
dataSource.username=admin
dataSource.password=

what is a SID and Service name

please look into oracle's documentation at https://docs.oracle.com/cd/B19306_01/network.102/b14212/concepts.htm

In case if the above link is not accessable in future, At the time time of writing this answer, the above link will direct you to, "Database Service and Database Instance Identification" topic in Connectivity Concepts chapter of "Database Net Services Administrator's Guide". This guide is published by oracle as part of "Oracle Database Online Documentation, 10g Release 2 (10.2)"

When I have to use one or another? Why do I need two of them?

Consider below mapping in a RAC Environment,

SID      SERVICE_NAME
bob1    bob
bob2    bob
bob3    bob
bob4    bob

if load balancing is configured, the listener will 'balance' the workload across all four SIDs. Even if load balancing is configured, you can connect to bob1 all the time if you want to by using the SID instead of SERVICE_NAME.

Please refer, https://community.oracle.com/thread/4049517

I realize this is a very old question, but I stumbled across this problem today and I got it to work with

<div style="text-align:center;">
    <button>button1</button>
    <button>button2</button>
</div>

Cheers, Mark

This worked for me perfectly fine.

    select name, orderno from (
         select name, orderno, row_number() over(partition by 
           orderno order by created_date desc) as rn from orders
    ) O where rn =1;

try adding

<meta http-equiv="X-UA-Compatible" content="IE=edge"> 

right after the opening head tag

As the warning message states, the SDK location should not contain whitespace.

Your SDK is at C:\Users\Giacomo B\AppData\Local\Android\sdk. There is a whitespace character in Giacomo B.

The easiest solution is to move the SDK somewhere else, where there is no space or other whitespace character in the path, such as C:\Android\sdk. You can point both Android Studio installations to the new location.

I have wrote my own library on Python to expand variables being loaded from directories with a hierarchy like:

/root
 |
 +- /proj1
     |
     +- config.yaml
     |
     +- /proj2
         |
         +- config.yaml
         |
         ... and so on ...

The key difference here is that the expansion must be applied only after all the config.yaml files is loaded, where the variables from the next file can override the variables from the previous, so the pseudocode should look like this:

env = YamlEnv()
env.load('/root/proj1/config.yaml')
env.load('/root/proj1/proj2/config.yaml')
...
env.expand()

As an additional option the xonsh script can export the resulting variables into environment variables (see the yaml_update_global_vars function).

The scripts:

https://sourceforge.net/p/contools/contools/HEAD/tree/trunk/Scripts/Tools/cmdoplib.yaml.py https://sourceforge.net/p/contools/contools/HEAD/tree/trunk/Scripts/Tools/cmdoplib.yaml.xsh

Pros:

• simple, does not support recursion and nested variables
• can replace an undefined variable to a placeholder (${MYUNDEFINEDVAR} -> *$/{MYUNDEFINEDVAR})
• can expand a reference from environment variable (${env:MYVAR})
• can replace all \\ to / in a path variable (${env:MYVAR:path})

Cons:

• does not support nested variables, so can not expand values in nested dictionaries (something like ${MYSCOPE.MYVAR} is not implemented)
• does not detect expansion recursion, including recursion after a placeholder put

In our network I have found that restarting the Workstation service on the client computer is able to resolve this problem. This has worked in cases where a reboot of the client would also fix the problem. But restarting the service is much quicker & easier [and may work when a reboot does not].

My impression is that the local Windows PC is caching some old information and this seems to clear it out.

For information on restarting a service, see this question. It boils down to running the following commands on a command line:

C:\> net stop workstation /y
C:\> net start workstation

Note - the /y flag will force the service to stop even if this will interrupt existing connections. But otherwise it will prompt the user and wait. So this may be necessary for scripting.

Be aware that on Windows Server 2016 (+ possibly others) these commands may also stop the netlogon service. If so you will have to add: net start netlogon

This will ensure you get a two-digit day and month.

function formattedDate(d = new Date) {
  let month = String(d.getMonth() + 1);
  let day = String(d.getDate());
  const year = String(d.getFullYear());

  if (month.length < 2) month = '0' + month;
  if (day.length < 2) day = '0' + day;

  return `${day}/${month}/${year}`;
}

Or terser:

function formattedDate(d = new Date) {
  return [d.getDate(), d.getMonth()+1, d.getFullYear()]
      .map(n => n < 10 ? `0${n}` : `${n}`).join('/');
}

select  d.dname
       ,count(e.empno) as count 
from dept d 
left outer join emp e 
  on e.deptno=d.deptno 
group by d.dname;

it should be sending a POST if you provide a data parameter (like you are doing):

from the docs: "the HTTP request will be a POST instead of a GET when the data parameter is provided"

so.. add some debug output to see what's up from the client side.

you can modify your code to this and try again:

import urllib
import urllib2

url = 'http://myserver/post_service'
opener = urllib2.build_opener(urllib2.HTTPHandler(debuglevel=1))
data = urllib.urlencode({'name' : 'joe',
                         'age'  : '10'})
content = opener.open(url, data=data).read()

Similar to an earlier answer, this will handle positive and negative integer powers of a double nicely.

double intpow(double a, int b)
{
  double r = 1.0;
  if (b < 0)
  {
    a = 1.0 / a;
    b = -b;
  }
  while (b)
  {
    if (b & 1)
      r *= a;
    a *= a;
    b >>= 1;
  }
  return r;
}

The WHERE clause is misplaced, it has to follow the table references and JOIN operations.

Something like this:

 FROM tartikel p1 
 JOIN tartikelpict p2 
   ON p1.kArtikel = p2.kArtikel 
  AND p2.nNr = 1
WHERE p1.dErstellt >= DATE(NOW()) - INTERVAL 7 DAY
ORDER BY p1.kArtikel DESC

EDIT (three plus years later)

The above essentially answers the question "I tried to add a WHERE clause to my query and now the query is returning an error, how do I fix it?"

As to a question about writing a condition that checks a date range of "last 7 days"...

That really depends on interpreting the specification, what the datatype of the column in the table is (DATE or DATETIME) and what data is available... what should be returned.

To summarize: the general approach is to identify a "start" for the date/datetime range, and "end" of that range, and reference those in a query. Let's consider something easier... all rows for "yesterday".

If our column is DATE type. Before we incorporate an expression into a query, we can test it in a simple SELECT

 SELECT DATE(NOW()) + INTERVAL -1 DAY 

and verify the result returned is what we expect. Then we can use that same expression in a WHERE clause, comparing it to a DATE column like this:

 WHERE datecol = DATE(NOW()) + INTERVAL -1 DAY

For a DATETIME or TIMESTAMP column, we can use >= and < inequality comparisons to specify a range

 WHERE datetimecol >= DATE(NOW()) + INTERVAL -1 DAY
   AND datetimecol <  DATE(NOW()) + INTERVAL  0 DAY

For "last 7 days" we need to know if that mean from this point right now, back 7 days ... e.g. the last 7*24 hours , including the time component in the comparison, ...

 WHERE datetimecol >= NOW() + INTERVAL -7 DAY
   AND datetimecol <  NOW() + INTERVAL  0 DAY

the last seven complete days, not including today

 WHERE datetimecol >= DATE(NOW()) + INTERVAL -7 DAY
   AND datetimecol <  DATE(NOW()) + INTERVAL  0 DAY

or past six complete days plus so far today ...

 WHERE datetimecol >= DATE(NOW()) + INTERVAL -6 DAY
   AND datetimecol <  NOW()       + INTERVAL  0 DAY

I recommend testing the expressions on the right side in a SELECT statement, we can use a user-defined variable in place of NOW() for testing, not being tied to what NOW() returns so we can test borders, across week/month/year boundaries, and so on.

SET @clock = '2017-11-17 11:47:47' ;

SELECT DATE(@clock)
     , DATE(@clock) + INTERVAL -7 DAY 
     , @clock + INTERVAL -6 DAY 

Once we have expressions that return values that work for "start" and "end" for our particular use case, what we mean by "last 7 days", we can use those expressions in range comparisons in the WHERE clause.

(Some developers prefer to use the DATE_ADD and DATE_SUB functions in place of the + INTERVAL val DAY/HOUR/MINUTE/MONTH/YEAR syntax.

And MySQL provides some convenient functions for working with DATE, DATETIME and TIMESTAMP datatypes... DATE, LAST_DAY,

Some developers prefer to calculate the start and end in other code, and supply string literals in the SQL query, such that the query submitted to the database is

  WHERE datetimecol >= '2017-11-10 00:00'
    AND datetimecol <  '2017-11-17 00:00'

And that approach works too. (My preference would be to explicitly cast those string literals into DATETIME, either with CAST, CONVERT or just the + INTERVAL trick...

  WHERE datetimecol >= '2017-11-10 00:00' + INTERVAL 0 SECOND
    AND datetimecol <  '2017-11-17 00:00' + INTERVAL 0 SECOND

The above all assumes we are storing "dates" in appropriate DATE, DATETIME and/or TIMESTAMP datatypes, and not storing them as strings in variety of formats e.g. 'dd/mm/yyyy', m/d/yyyy, julian dates, or in sporadically non-canonical formats, or as a number of seconds since the beginning of the epoch, this answer would need to be much longer.

strtok is an overlooked function for this sort of thing. It is meant to be quite fast.

$s = '233718_This_is_a_string';
$firstPart = strtok( $s, '_' );
$allTheRest = strtok( '' ); 

Empty string like this will force the rest of the string to be returned.

NB if there was nothing at all after the '_' you would get a FALSE value for $allTheRest which, as stated in the documentation, must be tested with ===, to distinguish from other falsy values.

Another way to solve this problem (it's not so good practice but looks beauty):

static class Helper
{
    public static object AsSingleParam(this object[] arg)
    {
       return (object)arg;
    }
}

Usage:

f(new object[] { 1, 2, 3 }.AsSingleParam());

this one did work :

http://social.msdn.microsoft.com/Forums/en/sqldatabaseengine/thread/8dd1b91d-3e14-4486-abe6-e3a550bfe457

I had a situation where my database showed restoring state and I couldn't run any queries and couldn't connect with our software.

What I did to get out of this situation is:

1. Stop all SQL related services from windows services.

2. I opened the DATA folder where the Ldf and Mdf files resides in the SQL directory, normally its like : "C:\Program Files***********\MSSQL\DATA

3. Then I copied both the Ldf and Mdf files of the database: [db name].mdf and [db name]_log.ldf

I copied both of these files to another folder.

4. Then I started all the SQL related services (in step 1) again from windows services.

5. Started my MS SQL Management studio with normal login.

6. Right click on the culprit database and hit DELETE (to delete the database at all).

7. All the LDF and MDF files related to this database have gone from DATA folder (mentioned in step 2).

8. Created a new database with the same name (same name of the one I deleted in step 6 - the culprit database).

9. Then [database name]->right click -> tasks -> Take Offline.

10. I then Copied both the files (from step 3) back to the DATA folder (step 2).

11. [database name]->right click -> tasks -> Bring Online.

1. Project > Generate Javadoc....

2. In the Javadoc command: field, browse to find javadoc.exe (usually at [path_to_jdk_directory]\bin\javadoc.exe).

3. Check the box next to the project/package/file for which you are creating the Javadoc.

4. In the Destination: field, browse to find the desired destination (for example, the root directory of the current project).

5. Click Finish.

You should now be able to find the newly generated Javadoc in the destination folder. Open index.html.

First of all, if you are trying to encode apostophes for querystrings, they need to be URLEncoded, not escaped with a leading backslash. For that use URLEncoder.encode(String, String) (BTW: the second argument should always be "UTF-8"). Secondly, if you want to replace all instances of apostophe with backslash apostrophe, you must escape the backslash in your string expression with a leading backslash. Like this:

"This is' it".replace("'", "\\'");

Edit:

I see now that you are probably trying to dynamically build a SQL statement. Do not do it this way. Your code will be susceptible to SQL injection attacks. Instead use a PreparedStatement.

foreach( $codes as $code and $names as $name ) { }

That is not valid.

You probably want something like this...

foreach( $codes as $index => $code ) {
   echo '<option value="' . $code . '">' . $names[$index] . '</option>';
}

Alternatively, it'd be much easier to make the codes the key of your $names array...

$names = array(
   'tn' => 'Tunisia',
   'us' => 'United States',
   ...
);

further to S.Lott's reply, class variables get passed to metaclass new method and can be accessed through the dictionary when a metaclass is defined. So, class variables can be accessed even before classes are created and instantiated.

for example:

class meta(type):
    def __new__(cls,name,bases,dicto):
          # two chars missing in original of next line ...
          if dicto['class_var'] == 'A':
             print 'There'
class proxyclass(object):
      class_var = 'A'
      __metaclass__ = meta
      ...
      ...

You can simply write :

class A(object):

    def __init__(self):
        print "Initialiser A was called"

class B(A):

    def __init__(self):
        A.__init__(self)
        # A.__init__(self,<parameters>) if you want to call with parameters
        print "Initialiser B was called"

class C(B):

    def __init__(self):
        # A.__init__(self) # if you want to call most super class...
        B.__init__(self)
        print "Initialiser C was called"

== is an equality test. It checks whether the right hand side and the left hand side are equal objects (according to their __eq__ or __cmp__ methods.)

is is an identity test. It checks whether the right hand side and the left hand side are the very same object. No methodcalls are done, objects can't influence the is operation.

You use is (and is not) for singletons, like None, where you don't care about objects that might want to pretend to be None or where you want to protect against objects breaking when being compared against None.

The diffrence is very simple:

Long version

If you want to have better readability, use Math.floor. But if you want to minimize it, use tilde ~~.

There are a lot of sources on the internet saying Math.floor is faster, but sometimes ~~. I would not recommend you think about speed because it is not going to be noticed when running the code. Maybe in tests etc, but no human can see a diffrence here. What would be faster is to use ~~ for a faster load time.

Short version

~~ is shorter/takes less space. Math.floor improves the readability. Sometimes tilde is faster, sometimes Math.floor is faster, but it is not noticeable.

You need to look for some replaceAll option

str = str.replace(/ /g, "+");

this is a regular expression way of doing a replaceAll.

function ReplaceAll(Source, stringToFind, stringToReplace) {
    var temp = Source;
    var index = temp.indexOf(stringToFind);

    while (index != -1) {
        temp = temp.replace(stringToFind, stringToReplace);
        index = temp.indexOf(stringToFind);
    }

    return temp;
}

String.prototype.ReplaceAll = function (stringToFind, stringToReplace) {
    var temp = this;
    var index = temp.indexOf(stringToFind);

    while (index != -1) {
        temp = temp.replace(stringToFind, stringToReplace);
        index = temp.indexOf(stringToFind);
    }

    return temp;

};

We can also use the readonly only with below attributes -

readonly onclick='return false;'

This is because if we will only use the readonly then radio buttons will be editable. To avoid this situation we can use readonly with above combination. It will restrict the editing and element's values will also passed during form submission.

netstat -aof | findstr :8080 (Change 8080 for any port)

ReentrantReadWriteLock is a specialized lock whereas synchronized(this) is a general purpose lock. They are similar but not quite the same.

You are right in that you could use synchronized(this) instead of ReentrantReadWriteLock but the opposite is not always true.

If you'd like to better understand what makes ReentrantReadWriteLock special look up some information about producer-consumer thread synchronization.

In general you can remember that whole-method synchronization and general purpose synchronization (using the synchronized keyword) can be used in most applications without thinking too much about the semantics of the synchronization but if you need to squeeze performance out of your code you may need to explore other more fine-grained, or special-purpose synchronization mechanisms.

By the way, using synchronized(this) - and in general locking using a public class instance - can be problematic because it opens up your code to potential dead-locks because somebody else not knowingly might try to lock against your object somewhere else in the program.

An adapted solution to modern JS of Travis' answer:

const getPageWidth = () => {
  const bodyMax = document.body
    ? Math.max(document.body.scrollWidth, document.body.offsetWidth)
    : 0;

  const docElementMax = document.documentElement
    ? Math.max(
        document.documentElement.scrollWidth,
        document.documentElement.offsetWidth,
        document.documentElement.clientWidth
      )
    : 0;

  return Math.max(bodyMax, docElementMax);
};

In terms of pattern interpretation, there's no difference between the following forms:

• /pattern/
• new RegExp("pattern")

If you want to replace a literal string using the replace method, I think you can just pass a string instead of a regexp to replace.

Otherwise, you'd have to escape any regexp special characters in the pattern first - maybe like so:

function reEscape(s) {
    return s.replace(/([.*+?^$|(){}\[\]])/mg, "\\$1");
}

// ...

var re = new RegExp(reEscape(pattern), "mg");
this.markup = this.markup.replace(re, value);

Pivoted single-row view with headers on the left based on @Dr.sai's answer above.

Injection prevented by jQuery's .text method

$.makeTable = function (mydata) {
    var table = $('<table>');
    $.each(mydata, function (index, value) {
        // console.log('index '+index+' value '+value);
        $(table).append($('<tr>'));
        $(table).append($('<th>').text(index));
        $(table).append($('<td>').text(value));
    });
    return ($(table));
};

This is working for me using this Bootsrap Datetimepiker, it returns the value as it is shown in the datepicker input, e.g. 2019-04-11

$('#myDateTimePicker').on('click,focusout', function (){
    var myDate = $("#myDateTimePicker").val();
    //console.log(myDate);
    //alert(myDate);
});

Goto the project repo, right click -> 'Git Bash Here'

In the git bash windows type

cd ~
pwd

i get something like this

/c/Users/<windows_username>

Now copy your public and private keys to this path

C:\Users\<windows_username>\.ssh

i got the below files there

id_rsa
id_rsa.pub
known_hosts

here

Now when ever it needs to use the credentials it uses these files and prompt for password if needed.

I wrote a method that accepts a default value, here is how to use it:

var teacher = new Teacher();
return teacher.GetProperty(t => t.Name);
return teacher.GetProperty(t => t.Name, "Default name");

Here is the code:

public static class Helper
{
    /// <summary>
    /// Gets a property if the object is not null.
    /// var teacher = new Teacher();
    /// return teacher.GetProperty(t => t.Name);
    /// return teacher.GetProperty(t => t.Name, "Default name");
    /// </summary>
    public static TSecond GetProperty<TFirst, TSecond>(this TFirst item1,
        Func<TFirst, TSecond> getItem2, TSecond defaultValue = default(TSecond))
    {
        if (item1 == null)
        {
            return defaultValue;
        }

        return getItem2(item1);
    }
}

you could load next clip in the onend event like that

<script type="text/javascript">
var nextVideo = "path/of/next/video.mp4";
var videoPlayer = document.getElementById('videoPlayer');
videoPlayer.onended = function(){
    videoPlayer.src = nextVideo;
}
</script>
<video id="videoPlayer" src="path/of/current/video.mp4" autoplay autobuffer controls />

More information here

It's also used in regular expressions, meaning "at most one repetition of the preceding character"

for example the regular expression /hey?/ matches with the strings "he" and "hey".

This command works officially for python:

conda install -c conda-forge python-graphviz

Unless you've messed with your server, yes it's cached. All the browsers are supposed to handle it the same. Some people (like me) might have their browsers configured so that it doesn't cache any files though. Closing the browser doesn't invalidate the file in the cache. Changing the file on the server should cause a refresh of the file however.

Beware of CSS : display:inline-block when printing.

None of the CCS property to go to next page would work for me in Chrome and Firefox if my table was inside a div with the style display:inline-block

For example, the following doesn't work :

<div style='display:inline-block'>
  <table style='page-break-before:always'>
    ...
  </table>
  <table style='page-break-before:always'>
    ...
  </table>
</div>

But the following work :

<div>
  <table style='page-break-before:always'>
    ...
  </table>
  <table style='page-break-before:always'>
    ...
  </table>
</div>

. ~/.bash_profile

Just make sure you don't have any dependencies on the current state in there.

The method I use to post and direct a user automatically to another page is to just write a hidden form and then auto submit it. Be assured that the hidden form takes absolutely no space on the web page. The code would be something like this:

    <form name="form1" method="post" action="somepage.php">
    <input name="fielda" type="text" id="fielda" type="hidden">

    <textarea name="fieldb" id="fieldb" cols="" rows="" style="display:none"></textarea>
</form>
    document.getElementById('fielda').value="some text for field a";
    document.getElementById('fieldb').innerHTML="some text for multiline fieldb";
    form1.submit();

Application of auto submit

An application of an auto submit would be directing form values that the user automatically put in on the other page back to that page. Such an application would be like this:

fieldapost=<?php echo $_post['fielda'];>
if (fieldapost !="") {
document.write("<form name='form1' method='post' action='previouspage.php'>
  <input name='fielda' type='text' id='fielda' type='hidden'>
</form>");
document.getElementById('fielda').value=fieldapost;
form1.submit();
}

Using a dictionary for unique names without a name list:

class MyClass:
    def __init__(self, name):
        self.name = name
        self.pretty_print_name()

    def pretty_print_name(self):
    print("This object's name is {}.".format(self.name))

my_objects = {}
for i in range(1,11):
    name = 'obj_{}'.format(i)
    my_objects[name] = my_objects.get(name, MyClass(name = name))

Output:

"This object's name is obj_1."
"This object's name is obj_2."
"This object's name is obj_3."
"This object's name is obj_4."
"This object's name is obj_5."
"This object's name is obj_6."
"This object's name is obj_7."
"This object's name is obj_8."
"This object's name is obj_9."
"This object's name is obj_10."

It should probably be noted that the for loop is faster than the foreach. So for the original post, if you are worried about performance on a critical component like a renderer, use a for loop.

Reference: In .NET, which loop runs faster, 'for' or 'foreach'?

MVW stands for Model-View-Whatever.

For completeness, here are all the acronyms mentioned:

MVC - Model-View-Controller

MVP - Model-View-Presenter

MVVM - Model-View-ViewModel

MVW / MV* / MVx - Model-View-Whatever

And some more:

HMVC - Hierarchical Model-View-Controller

MMV - Multiuse Model View

MVA - Model-View-Adapter

MVI - Model-View-Intent

Use example with from the post of Szilágyi Donát.

I use two querys, one to know what roles I have, excluding connect grant:

SELECT * FROM USER_ROLE_PRIVS WHERE GRANTED_ROLE != 'CONNECT'; -- Roles of the actual Oracle Schema

Know I like to find what privileges/roles my schema/user have; examples of my roles ROLE_VIEW_PAYMENTS & ROLE_OPS_CUSTOMERS. But to find the tables/objecst of an specific role I used:

SELECT * FROM ALL_TAB_PRIVS WHERE GRANTEE='ROLE_OPS_CUSTOMERS'; -- Objects granted at role.

The owner schema for this example could be PRD_CUSTOMERS_OWNER (or the role/schema inself).

Regards.

There are two flavors of table valued functions. One that is just a select statement and one that can have more rows than just a select statement.

This can not have a variable:

create function Func() returns table
as
return
select 10 as ColName

You have to do like this instead:

create function Func()
returns @T table(ColName int)
as
begin
  declare @Var int
  set @Var = 10
  insert into @T(ColName) values (@Var)
  return
end

In the Android Studio v4.0, you should be off the Gradle offline-mode and retry to sync Gradle.

use bytea (or Large Objects if you absolutely have to)

NullPointerExceptions are among the easier exceptions to diagnose, frequently. Whenever you get an exception in Java and you see the stack trace ( that's what your second quote-block is called, by the way ), you read from top to bottom. Often, you will see exceptions that start in Java library code or in native implementations methods, for diagnosis you can just skip past those until you see a code file that you wrote.

Then you like at the line indicated and look at each of the objects ( instantiated classes ) on that line -- one of them was not created and you tried to use it. You can start by looking up in your code to see if you called the constructor on that object. If you didn't, then that's your problem, you need to instantiate that object by calling new Classname( arguments ). Another frequent cause of NullPointerExceptions is accidentally declaring an object with local scope when there is an instance variable with the same name.

In your case, the exception occurred in your constructor for Workshop on line 75. <init> means the constructor for a class. If you look on that line in your code, you'll see the line

denimjeansButton.addItemListener(this);

There are fairly clearly two objects on this line: denimjeansButton and this. this is synonymous with the class instance you are currently in and you're in the constructor, so it can't be this. denimjeansButton is your culprit. You never instantiated that object. Either remove the reference to the instance variable denimjeansButton or instantiate it.

You can use .empty(), like this:

$("#foo").empty();

From the docs:

Remove all child nodes of the set of matched elements from the DOM.

Incase you are not able to resolve the issue in any other way, then try this(it worked for me!):

Keep this below code into your web config file then rename value="yourwebformname.aspx"

<system.webServer>
    <defaultDocument>
       <files>
          <add value="insertion.aspx" />
       </files>
    </defaultDocument>
    <directoryBrowse enabled="false" />
</system.webServer>

else Try:

<system.webServer>
    <directoryBrowse enabled="true" />
</system.webServer>

The following module allows you to group Django models and still work with a QuerySet in the result: https://github.com/kako-nawao/django-group-by

For example:

from django_group_by import GroupByMixin

class BookQuerySet(QuerySet, GroupByMixin):
    pass

class Book(Model):
    title = TextField(...)
    author = ForeignKey(User, ...)
    shop = ForeignKey(Shop, ...)
    price = DecimalField(...)

class GroupedBookListView(PaginationMixin, ListView):
    template_name = 'book/books.html'
    model = Book
    paginate_by = 100

    def get_queryset(self):
        return Book.objects.group_by('title', 'author').annotate(
            shop_count=Count('shop'), price_avg=Avg('price')).order_by(
            'name', 'author').distinct()

    def get_context_data(self, **kwargs):
        return super().get_context_data(total_count=self.get_queryset().count(), **kwargs)

'book/books.html'

<ul>
{% for book in object_list %}
    <li>
        <h2>{{ book.title }}</td>
        <p>{{ book.author.last_name }}, {{ book.author.first_name }}</p>
        <p>{{ book.shop_count }}</p>
        <p>{{ book.price_avg }}</p>
    </li>
{% endfor %}
</ul>

The difference to the annotate/aggregate basic Django queries is the use of the attributes of a related field, e.g. book.author.last_name.

If you need the PKs of the instances that have been grouped together, add the following annotation:

.annotate(pks=ArrayAgg('id'))

NOTE: ArrayAgg is a Postgres specific function, available from Django 1.9 onwards: https://docs.djangoproject.com/en/1.10/ref/contrib/postgres/aggregates/#arrayagg

I use PyCharm which has great capabilities to compare between folders and files.

Just open the parent folder for both repos and wait until it indexes. Then you can use right click on a folder or file and Compare to... and pick the corresponding folder / file on the other side.

It shows not only what files are different but also their content. Much easier than command line.

if you have numbers in list, you can use map to apply str to each element:

print ', '.join(map(str, LIST))

^ map is C code so it's faster than str(i) for i in LIST

You can use \= in an substitution string and is something I do every so often.

If you have what's essentially an unordered list in vim, say using # as a marker, you can convert it over to an ordered list.

# CSSLINT
# PHPCS
# Charlie
# Delta

If it starts on line one, you can do

:1,6s/#/\=line(".")/g

To convert it over to

1 CSSLINT
2 PHPCS
3 Charlie
4 Delta

If it doesn't start on line one, just do the maths:

:16,20s/#/\=line(".") - 15/g

More info at :help sub-replace-expression

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

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

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

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

Basically you need apache / php running.

Checking if v contains the element x:

#include <algorithm>

if(std::find(v.begin(), v.end(), x) != v.end()) {
    /* v contains x */
} else {
    /* v does not contain x */
}

Checking if v contains elements (is non-empty):

if(!v.empty()){
    /* v is non-empty */
} else {
    /* v is empty */
}

The solution above won't work if the original string has no spaces.

Try this:

var title = "This is your title";
var shortText = jQuery.trim(title).substring(0, 10)
                          .trim(this) + "...";

Some times this problem arise when Application is build in one PC and try to run another PC. And also build the application with Visual Studio 2010.I have the following problem

Problem Description
    Stop Working
Problem Signature
  Problem Event Name:   CLR20r3
  Problem Signature 01: diagnosticcentermngr.exe
  Problem Signature 02: 1.0.0.0
  Problem Signature 03: 4f8c1772
  Problem Signature 04: System.Drawing
  Problem Signature 05: 2.0.0.0
  Problem Signature 06: 4a275e83
  Problem Signature 07: 7af
  Problem Signature 08: 6c
  Problem Signature 09: System.ArgumentException
  OS Version:   6.1.7600.2.0.0.256.1
  Locale ID:    1033

Read our privacy statement online:
  http://go.microsoft.com/fwlink/?linkid=104288&clcid=0x0409

If the online privacy statement is not available, please read our privacy statement offline:
  C:\Windows\system32\en-US\erofflps.txt

Dont worry, Please check out following link and install .net framework 4.Although my application .net properties was .net framework 2.

http://www.microsoft.com/download/en/details.aspx?id=17718

restart your PC and try again.

I ran into this issue as well and found this post. Ultimately none of these answers solved my problem, instead I had to put in a rewrite rule to strip out the location /rt as the backend my developers made was not expecting any additional paths:

+-(william@wkstn18)--(Thu, 05 Nov 20)-+
+-(~)--(16:13)->wscat -c ws://WebsocketServerHostname/rt
error: Unexpected server response: 502

Testing with wscat repeatedly gave a 502 response. Nginx error logs provided the same upstream error as above, but notice the upstream string shows the GET Request is attempting to access localhost:12775/rt and not localhost:12775:

 2020/11/05 22:13:32 [error] 10175#10175: *7 upstream prematurely closed
 connection while reading response header from upstream, client: WANIP,
 server: WebsocketServerHostname, request: "GET /rt/socket.io/?transport=websocket
 HTTP/1.1", upstream: "http://127.0.0.1:12775/rt/socket.io/?transport=websocket",
 host: "WebsocketServerHostname"

Since the devs had not coded their websocket (listening on 12775) to expect /rt/socket.io but instead just /socket.io/ (NOTE: /socket.io/ appears to just be a way to specify websocket transport discussed here). Because of this, rather than ask them to rewrite their socket code I just put in a rewrite rule to translate WebsocketServerHostname/rt to WebsocketServerHostname:12775 as below:

upstream websocket-rt {
        ip_hash;

        server 127.0.0.1:12775;
}

server {
        listen 80;
        server_name     WebsocketServerHostname;

        location /rt {
                proxy_http_version 1.1;

                #rewrite /rt/ out of all requests and proxy_pass to 12775
                rewrite /rt/(.*) /$1  break;

                proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
                proxy_set_header Host $host;

                proxy_pass http://websocket-rt;
                proxy_set_header Upgrade $http_upgrade;
                proxy_set_header Connection $connection_upgrade;
        }

}

I would suggest using TimeUnit. You can use it like this:

long minutes = TimeUnit.MILLISECONDS.toMinutes(millis);
long seconds = TimeUnit.MILLISECONDS.toSeconds(millis);

Make the value a list, e.g.

a["abc"] = [1, 2, "bob"]

UPDATE:

There are a couple of ways to add values to key, and to create a list if one isn't already there. I'll show one such method in little steps.

key = "somekey"
a.setdefault(key, [])
a[key].append(1)

Results:

>>> a
{'somekey': [1]}

Next, try:

key = "somekey"
a.setdefault(key, [])
a[key].append(2)

Results:

>>> a
{'somekey': [1, 2]}

The magic of setdefault is that it initializes the value for that key if that key is not defined, otherwise it does nothing. Now, noting that setdefault returns the key you can combine these into a single line:

a.setdefault("somekey",[]).append("bob")

Results:

>>> a
{'somekey': [1, 2, 'bob']}

You should look at the dict methods, in particular the get() method, and do some experiments to get comfortable with this.

If you're trying to get the integers from the command line args, you'll need something like this:

public static void main(String[] args) {
    int[] nums = new int[args.length];
    for(int i = 0; i < args.length; i++) {
        try {
            nums[i] = Integer.parseInt(args[i]);
        }
        catch(NumberFormatException nfe) {
            System.err.println("Invalid argument");
        }
    }

    // averaging code here
}

As for the actual averaging code, others have suggested how you can tweak that (so I won't repeat what they've said).

Edit: actually it's probably better to just put it inside the above loop and not use the nums array at all

Change your foreach to something like this, You are not assigning data back to your return variable $data after performing operation on that.

foreach($data as $key => $value)
{
  $data[$key]['transaction_date'] = date('d/m/Y',$value['transaction_date']);
}

Codepad DEMO.

Try using the following code.

$(document).ready(function(){
    $("a[@href^='http']").attr('target','_blank');
});

The problem: The format of the file as to how it is saved. Use a proper text editor and save it with the .py extension and run it in terminal.

eg: file name should be saved as `example.py`
run
python example

My solution combines user2428118 and Veiko Jääger's answers, allowing for preloading but without requiring a separate transparent image. We use a base64 encoded 1px transparent image instead.

<style type="text/css" >
    video{
        background: transparent url("poster.jpg") 50% 50% / cover no-repeat ;
    }
</style>
<video controls poster="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" >
    <source src="movie.mp4" type="video/mp4">
    <source src="movie.ogg" type="video/ogg">
</video>

The command to just stream it to a new container (mp4) needed by some applications like Adobe Premiere Pro without encoding (fast) is:

ffmpeg -i input.mov -qscale 0 output.mp4

Alternative as mentioned in the comments, which re-encodes with best quaility (-qscale 0):

ffmpeg -i input.mov -q:v 0 output.mp4

You can use JSONPath

Doing something like this:

results = JSONPath(null, TestObj, "$..[?(@.id=='A')]")

Note that JSONPath returns an array of results

(I have not tested the expression "$..[?(@.id=='A')]" btw. Maybe it needs to be fine-tuned with the help of a browser console)

Solution native Javascript :

document.getElementById("theSelectId").insertBefore(new Option('', ''), document.getElementById("theSelectId").firstChild);

example : http://codepen.io/anon/pen/GprybL