Let's break >> /dev/null 2>&1 statement into parts:

Part 1: >> output redirection

This is used to redirect the program output and append the output at the end of the file. More...

Part 2: /dev/null special file

This is a Pseudo-devices special file.

Command ls -l /dev/null will give you details of this file:

crw-rw-rw-. 1 root root 1, 3 Mar 20 18:37 /dev/null

Did you observe crw? Which means it is a pseudo-device file which is of character-special-file type that provides serial access.

/dev/null accepts and discards all input; produces no output (always returns an end-of-file indication on a read). Reference: Wikipedia

Part 3: 2>&1 file descriptor

Whenever you execute a program, the operating system always opens three files, standard input, standard output, and standard error as we know whenever a file is opened, the operating system (from kernel) returns a non-negative integer called a file descriptor. The file descriptor for these files are 0, 1, and 2, respectively.

So 2>&1 simply says redirect standard error to standard output.

& means whatever follows is a file descriptor, not a filename.

In short, by using this command you are telling your program not to shout while executing.

What is the importance of using 2>&1?

If you don't want to produce any output, even in case of some error produced in the terminal. To explain more clearly, let's consider the following example:

$ ls -l > /dev/null

For the above command, no output was printed in the terminal, but what if this command produces an error:

$ ls -l file_doesnot_exists > /dev/null
ls: cannot access file_doesnot_exists: No such file or directory

Despite I'm redirecting output to /dev/null, it is printed in the terminal. It is because we are not redirecting error output to /dev/null, so in order to redirect error output as well, it is required to add 2>&1:

$ ls -l file_doesnot_exists > /dev/null 2>&1

A particularly interesting case is when you compare

   java.util.Arrays$ArrayList<[[name,value,type], [name1,value1,type1]]> 

and

   java.util.Collections$UnmodifiableCollection<[[name,value,type], [name1,value1,type1]]>

So far, the only solution I see is to change both of them into sets

assertEquals(new HashSet<CustomAttribute>(customAttributes), new HashSet<CustomAttribute>(result.getCustomAttributes()));

Or I could compare them element by element.

What is the type of c.PhysicalAddresses? If it's Dictionary<TKey,TValue>, then you can use the ContainsKey method.

I got a 503 error because the Application Pools weren't started in IIS for some reason.

This error occurred for me because mod_rewrite was not enabled. Everything worked fine after enabling the rewrite module: https://www.debuntu.org/how-to-enable-apache-modules-under-debian-based-system-page-2/

You could compare String representations so:

array1.toString() == array2.toString()
array1.toString() !== array3.toString()

but that would also make

array4 = ['1',2,3,4,5]

equal to array1 if that matters to you

If you are willing to pay I strongly recommend you Telerik Components for WPF. They offer great styles/themes and there have specific themes for both, Office 2013 and Windows 8 (EDIT: and also a Visual Studio 2013 themed style). However there offering much more than just styles in fact you will get a whole bunch of controls which are really useful.

Here is how it looks in action (Screenshots taken from telerik samples):

Here are the links to the telerik executive dashboard sample (first screenshot) and here for the CRM Dashboard (second screenshot).

They offer a 30 day trial, just give it a shot!

You need a reference to an Axes object to keep drawing on the same subplot.

import matplotlib.pyplot as plt

x = range(100)
y = range(100,200)
fig = plt.figure()
ax1 = fig.add_subplot(111)

ax1.scatter(x[:4], y[:4], s=10, c='b', marker="s", label='first')
ax1.scatter(x[40:],y[40:], s=10, c='r', marker="o", label='second')
plt.legend(loc='upper left');
plt.show()

I use the AbsoluteUri and you can get it like this:

string myURI = Request.Url.AbsoluteUri;
 if (!WebSecurity.IsAuthenticated) {
        Response.Redirect("~/Login?returnUrl="
            + Request.Url.AbsoluteUri );

Then after you login:

var returnUrl = Request.QueryString["returnUrl"];
 if(WebSecurity.Login(username,password,true)){
                Context.RedirectLocal(returnUrl);

It works well for me.

value_counts is a Series method rather than a DataFrame method (and you are trying to use it on a DataFrame, clean). You need to perform this on a specific column:

clean[column_name].value_counts()

It doesn't usually make sense to perform value_counts on a DataFrame, though I suppose you could apply it to every entry by flattening the underlying values array:

pd.value_counts(df.values.flatten())

Another way, using inline style and the spread operator

style={{
  ...completed ? { textDecoration: completed } : {}
}}

That way be useful in some situations where you want to add a bunch of properties at the same time base on the condition.

Cardinality refers to the uniqueness of data contained in a column. If a column has a lot of duplicate data (e.g. a column that stores either "true" or "false"), it has low cardinality, but if the values are highly unique (e.g. Social Security numbers), it has high cardinality.

https://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.boundfield.dataformatstring(v=vs.110).aspx?cs-save-lang=1&cs-lang=csharp#code-snippet-1 


In The above link you will find the answer

**C or c**

    Displays numeric values in currency format. You can specify the number of decimal places.
    Example:

Format: {0:C}
123.456 -> $123.46

**D or d**

    Displays integer values in decimal format. You can specify the number of digits. (Although the type is referred to as "decimal", the numbers are formatted as integers.)
    Example:
        Format: {0:D}
    1234 -> 1234
    Format: {0:D6}
    1234 -> 001234

    **E or e**
    Displays numeric values in scientific (exponential) format. You can specify the number of decimal places.
    Example:
    Format: {0:E}
    1052.0329112756 -> 1.052033E+003
    Format: {0:E2}
    -1052.0329112756 -> -1.05e+003

**F or f**
Displays numeric values in fixed format. You can specify the number of decimal places.
Example:
Format: {0:F}
1234.567 -> 1234.57
Format: {0:F3}
1234.567 -> 1234.567

**G or g**
Displays numeric values in general format (the most compact of either fixed-point or scientific notation). You can specify the number of significant digits.
Example:
Format: {0:G}
-123.456 -> -123.456
Format: {0:G2}
-123.456 -> -120

F or f
Displays numeric values in fixed format. You can specify the number of decimal places.
Format: {0:F}
1234.567 -> 1234.57
Format: {0:F3}
1234.567 -> 1234.567

G or g
Displays numeric values in general format (the most compact of either fixed-point or scientific notation). You can specify the number of significant digits.
Format: {0:G}
-123.456 -> -123.456
Format: {0:G2}
-123.456 -> -120

N or n
Displays numeric values in number format (including group separators and optional negative sign). You can specify the number of decimal places.
Format: {0:N}
1234.567 -> 1,234.57
Format: {0:N4}
1234.567 -> 1,234.5670

P or p
Displays numeric values in percent format. You can specify the number of decimal places.
Format: {0:P}
1 -> 100.00%
Format: {0:P1}
.5 -> 50.0%

R or r
Displays Single, Double, or BigInteger values in round-trip format.
Format: {0:R}
123456789.12345678 -> 123456789.12345678

X or x
Displays integer values in hexadecimal format. You can specify the number of digits.
Format: {0:X}
255 -> FF
Format: {0:x4}
255 -> 00ff

 function formatNumber1(number) {
  var comma = ',',
      string = Math.max(0, number).toFixed(0),
      length = string.length,
      end = /^\d{4,}$/.test(string) ? length % 3 : 0;
  return (end ? string.slice(0, end) + comma : '') + string.slice(end).replace(/(\d{3})(?=\d)/g, '$1' + comma);
 }

 function formatNumber2(number) {
  return Math.max(0, number).toFixed(0).replace(/(?=(?:\d{3})+$)(?!^)/g, ',');
 }

Source: http://jsperf.com/number-format

For jupyter lab this should work (@Alasja)

from IPython.display import HTML
HTML('''<script>
var code_show_err = false; 
var code_toggle_err = function() {
 var stderrNodes = document.querySelectorAll('[data-mime-type="application/vnd.jupyter.stderr"]')
 var stderr = Array.from(stderrNodes)
 if (code_show_err){
     stderr.forEach(ele => ele.style.display = 'block');
 } else {
     stderr.forEach(ele => ele.style.display = 'none');
 }
 code_show_err = !code_show_err
} 
document.addEventListener('DOMContentLoaded', code_toggle_err);
</script>
To toggle on/off output_stderr, click <a onclick="javascript:code_toggle_err()">here</a>.''')

There is no explicit Clone button. Basically what you do is create an image, or snapshot of an existing EC2 instance, and then spin up a new instance using that snapshot.

First create an image from an existing EC2 instance.

Check your snapshots list to see if the process is completed. This usually takes around 20 minutes depending on how large your instance drive is.

Then, you need to create a new instance and use that image as the AMI.

I don't know if maybe it's a difference in Excel version but this question is 6 years old and the accepted answer didn't help me so this is what I figured out:

Under Conditional Formatting > Manage Rules:

1. Make a new rule with "Use a formula to determine which cells to format"
2. Make your rule, but put a dollar sign only in front of the letter: $A2<$B2
3. Under "Applies to", Manually select the second column (It would not work for me if I changed the value in the box, it just kept snapping back to what was already there), so it looks like $B$2:$B$100 (assuming you have 100 rows)

This worked for me in Excel 2016.

Construct a List<AppMeta> from the excluded List and use the Except Linq operator.

var ex = excludedAppIds.Select(x => new AppMeta{Id = x}).ToList();                           
var result = ex.Except(unfilteredApps).ToList();

In my case adding multiDexEnabled true in Android/build/build.gradle file compiled the files.

I will look into removing this in the future, as in the documentation it says 'Before configuring your app to enable use of 64K or more method references, you should take steps to reduce the total number of references called by your app code, including methods defined by your app code or included libraries.'

defaultConfig {
  applicationId "com.peoplesenergyapp"
  minSdkVersion rootProject.ext.minSdkVersion
  targetSdkVersion rootProject.ext.targetSdkVersion
  versionCode 1
  versionName "1.0"
  multiDexEnabled true // <-add this 
}

@Michael Durrant's answer ably covers the shell itself, but the shell environment also includes the various commands you use in the shell and these are going to be similar -- but not identical -- between OS X and linux. In general, both will have the same core commands and features (especially those defined in the Posix standard), but a lot of extensions will be different.

For example, linux systems generally have a useradd command to create new users, but OS X doesn't. On OS X, you generally use the GUI to create users; if you need to create them from the command line, you use dscl (which linux doesn't have) to edit the user database (see here). (Update: starting in macOS High Sierra v10.13, you can use sysadminctl -addUser instead.)

Also, some commands they have in common will have different features and options. For example, linuxes generally include GNU sed, which uses the -r option to invoke extended regular expressions; on OS X, you'd use the -E option to get the same effect. Similarly, in linux you might use ls --color=auto to get colorized output; on macOS, the closest equivalent is ls -G.

EDIT: Another difference is that many linux commands allow options to be specified after their arguments (e.g. ls file1 file2 -l), while most OS X commands require options to come strictly first (ls -l file1 file2).

Finally, since the OS itself is different, some commands wind up behaving differently between the OSes. For example, on linux you'd probably use ifconfig to change your network configuration. On OS X, ifconfig will work (probably with slightly different syntax), but your changes are likely to be overwritten randomly by the system configuration daemon; instead you should edit the network preferences with networksetup, and then let the config daemon apply them to the live network state.

To differentiate between scroll up/down in jQuery, you could use:

var mousewheelevt = (/Firefox/i.test(navigator.userAgent)) ? "DOMMouseScroll" : "mousewheel" //FF doesn't recognize mousewheel as of FF3.x
$('#yourDiv').bind(mousewheelevt, function(e){

    var evt = window.event || e //equalize event object     
    evt = evt.originalEvent ? evt.originalEvent : evt; //convert to originalEvent if possible               
    var delta = evt.detail ? evt.detail*(-40) : evt.wheelDelta //check for detail first, because it is used by Opera and FF

    if(delta > 0) {
        //scroll up
    }
    else{
        //scroll down
    }   
});

This method also works in divs that have overflow:hidden.

I successfully tested it in FireFox, IE and Chrome.

1. Instala grunt de manera global: sudo npm install -g grunt-cli --unsafe-perm=true --allow-root

2. Try to run grunt.

3. If you have this message:

Warning:

You need to have Ruby and Sass installed and in your PATH for this task to work.

More info: https://github.com/gruntjs/grunt-contrib-sass

Used --force, continuing.

3.1. Check that you have ruby installed (mac, you should have it): ruby -v

Taking the answer above as guidance;

I made an extra graph for "hours worked by month", then copy/special-pasted it as a 'linked picture' for use under my other graphs. in other words, I copy pasted my existing graphs over the linked picture made from my new graph with the new axis.. And because it is a linked picture it always updates.

Make it easy on yourself though, make sure you copy an existing graph to build your 'picture' graph - then delete the series or change the data source to what you need as an extra axis. That way you won't have to mess around resizing.

The results were not too bad considering what I wanted to achieve; basically a list of incident frequency bar graph, with a performance tread line, and then a solid 'backdrop' of hours worked.

Thanks to the guy above for the idea!

I use:

Intent sendIntent = new Intent(Intent.ACTION_MAIN);
sendIntent.putExtra("sms_body", "text");
sendIntent.setType("vnd.android-dir/mms-sms");
startActivity(sendIntent);

Kris, your version works great when needing to load the assembly from the actual DLL file (and if the DLL is there!), however, one will get a much unwanted error if the DLL is EMBEDDED (i.e., not a file but an embedded DLL).

The other thing is, if one uses a versioning scheme with something like "1.2012.0508.0101", when one gets the version string you'll actually get "1.2012.518.101"; note the missing zeros.

So, here's a few extra functions to get the version of a DLL (embedded or from the DLL file):

    public static System.Reflection.Assembly GetAssembly(string pAssemblyName)
    {
        System.Reflection.Assembly tMyAssembly = null;

        if (string.IsNullOrEmpty(pAssemblyName)) { return tMyAssembly; }
        tMyAssembly = GetAssemblyEmbedded(pAssemblyName);
        if (tMyAssembly == null) { GetAssemblyDLL(pAssemblyName); }

        return tMyAssembly;
    }//System.Reflection.Assembly GetAssemblyEmbedded(string pAssemblyDisplayName)


    public static System.Reflection.Assembly GetAssemblyEmbedded(string pAssemblyDisplayName)
    {
        System.Reflection.Assembly tMyAssembly = null;

        if(string.IsNullOrEmpty(pAssemblyDisplayName)) { return tMyAssembly; }
        try //try #a
        {
            tMyAssembly = System.Reflection.Assembly.Load(pAssemblyDisplayName);
        }// try #a
        catch (Exception ex)
        {
            string m = ex.Message;
        }// try #a
        return tMyAssembly;
    }//System.Reflection.Assembly GetAssemblyEmbedded(string pAssemblyDisplayName)


    public static System.Reflection.Assembly GetAssemblyDLL(string pAssemblyNameDLL)
    {
        System.Reflection.Assembly tMyAssembly = null;

        if (string.IsNullOrEmpty(pAssemblyNameDLL)) { return tMyAssembly; }
        try //try #a
        {
            if (!pAssemblyNameDLL.ToLower().EndsWith(".dll")) { pAssemblyNameDLL += ".dll"; }
            tMyAssembly = System.Reflection.Assembly.LoadFrom(pAssemblyNameDLL);
        }// try #a
        catch (Exception ex)
        {
            string m = ex.Message;
        }// try #a
        return tMyAssembly;
    }//System.Reflection.Assembly GetAssemblyFile(string pAssemblyNameDLL)


    public static string GetVersionStringFromAssembly(string pAssemblyDisplayName)
    {
        string tVersion = "Unknown";
        System.Reflection.Assembly tMyAssembly = null;

        tMyAssembly = GetAssembly(pAssemblyDisplayName);
        if (tMyAssembly == null) { return tVersion; }
        tVersion = GetVersionString(tMyAssembly.GetName().Version.ToString());
        return tVersion;
    }//string GetVersionStringFromAssemblyEmbedded(string pAssemblyDisplayName)


    public static string GetVersionString(Version pVersion)
    {
        string tVersion = "Unknown";
        if (pVersion == null) { return tVersion; }
        tVersion = GetVersionString(pVersion.ToString());
        return tVersion;
    }//string GetVersionString(Version pVersion)


    public static string GetVersionString(string pVersionString)
    {
        string tVersion = "Unknown";
        string[] aVersion;

        if (string.IsNullOrEmpty(pVersionString)) { return tVersion; }
        aVersion = pVersionString.Split('.');
        if (aVersion.Length > 0) { tVersion = aVersion[0]; }
        if (aVersion.Length > 1) { tVersion += "." + aVersion[1]; }
        if (aVersion.Length > 2) { tVersion += "." + aVersion[2].PadLeft(4, '0'); }
        if (aVersion.Length > 3) { tVersion += "." + aVersion[3].PadLeft(4, '0'); }

        return tVersion;
    }//string GetVersionString(Version pVersion)


    public static string GetVersionStringFromAssemblyEmbedded(string pAssemblyDisplayName)
    {
        string tVersion = "Unknown";
        System.Reflection.Assembly tMyAssembly = null;

        tMyAssembly = GetAssemblyEmbedded(pAssemblyDisplayName);
        if (tMyAssembly == null) { return tVersion; }
        tVersion = GetVersionString(tMyAssembly.GetName().Version.ToString());
        return tVersion;
    }//string GetVersionStringFromAssemblyEmbedded(string pAssemblyDisplayName)


    public static string GetVersionStringFromAssemblyDLL(string pAssemblyDisplayName)
    {
        string tVersion = "Unknown";
        System.Reflection.Assembly tMyAssembly = null;

        tMyAssembly = GetAssemblyDLL(pAssemblyDisplayName);
        if (tMyAssembly == null) { return tVersion; }
        tVersion = GetVersionString(tMyAssembly.GetName().Version.ToString());
        return tVersion;
    }//string GetVersionStringFromAssemblyEmbedded(string pAssemblyDisplayName)

In the mongo shell, if the returned cursor is not assigned to a variable using the var keyword, the cursor is automatically iterated to access up to the first 20 documents that match the query. You can set the DBQuery.shellBatchSize variable to change the number of automatically iterated documents.

Reference - https://docs.mongodb.com/v3.2/reference/method/db.collection.find/

Or you can do it like as well:

<asp:DropDownList ID="ddl" runat="server"  AutoPostBack="true" onchange="javascript:CalcTotalAmt();" OnSelectedIndexChanged="ddl_SelectedIndexChanged"></asp:DropDownList>

For windows you can do it like

"scripts": {
    "start:prod" : "SET NODE_ENV=production & nodemon app.js",
    "start:dev" : "SET NODE_ENV=development & nodemon app.js"
},

If you need to set the new value based on the old field value that is do something like:

update my_table set field_1 = field_1 + 1 where pk_field = some_value

use query expressions:

MyModel.objects.filter(pk=some_value).update(field1=F('field1') + 1)

This will execute update atomically that is using one update request to the database without reading it first.

For Windows Forms applications an optional disabling of a UI-Control can be very useful. So my suggestion looks like this:

public class AppWaitCursor : IDisposable
{
    private readonly Control _eventControl;

    public AppWaitCursor(object eventSender = null)
    {
         _eventControl = eventSender as Control;
        if (_eventControl != null)
            _eventControl.Enabled = false;

        Application.UseWaitCursor = true;
        Application.DoEvents();
    }

    public void Dispose()
    {
        if (_eventControl != null)
            _eventControl.Enabled = true;

        Cursor.Current = Cursors.Default;
        Application.UseWaitCursor = false;
    }
}

Usage:

private void UiControl_Click(object sender, EventArgs e)
{
    using (new AppWaitCursor(sender))
    {
        LongRunningCall();
    }
}

Percentage in width works but percentage in height will not work unless you specify a specific height for any parent in the dependent loop...

See this : percentage in height doesn’t work?

fname = "feed.txt"
feed = open(fname, 'r')

num_lines = len(feed.splitlines())
num_words = 0
num_chars = 0

for line in lines:
    num_words += len(line.split())

head is defined inside the main as follows.

struct Node *head = new Node;

But you are changing the head in addNode() and initNode() functions only. The changes are not reflected back on the main.

Make the declaration of the head as global and do not pass it to functions.

The functions should be as follows.

void initNode(int n){
    head->x = n;
    head->next = NULL;
}

void addNode(int n){
    struct Node *NewNode = new Node;
    NewNode-> x = n;
    NewNode->next = head;
    head = NewNode;
}

If you want to use a class:

from datetime import datetime,timedelta

class MyThread(): 

    def __init__(self, name, timeLimit):        
        self.name = name
        self.timeLimit = timeLimit
    def run(self): 
        # get the start time
        startTime = datetime.now()
    
        while True:
           # stop if the time limit is reached :
           if((datetime.now()-startTime)>self.timeLimit):
               break
           print('A')

mt = MyThread('aThread',timedelta(microseconds=20000))
mt.run()

Based on generality of this question, I think, that you'll need to setup your own HTTPS proxy on some server online. Do the following steps:

• Prepare your proxy server - install IIS, Apache
• Get valid SSL certificate to avoid security errors (free from startssl.com for example)
• Write a wrapper, which will download insecure content (how to below)
• From your site/app get https://yourproxy.com/?page=http://insecurepage.com

If you simply download remote site content via file_get_contents or similiar, you can still have insecure links to content. You'll have to find them with regex and also replace. Images are hard to solve, but Ï found workaround here: http://foundationphp.com/tutorials/image_proxy.php

Note: While this solution may have worked in some browsers when it was written in 2014, it no longer works. Navigating or redirecting to an HTTP URL in an iframe embedded in an HTTPS page is not permitted by modern browsers, even if the frame started out with an HTTPS URL.

The best solution I created is to simply use google as the ssl proxy...

https://www.google.com/search?q=%http://yourhttpsite.com&btnI=Im+Feeling+Lucky

Tested and works in firefox.

Other Methods:

• Use a Third party such as embed.ly (but it it really only good for well known http APIs).

• Create your own redirect script on an https page you control (a simple javascript redirect on a relative linked page should do the trick. Something like: (you can use any langauge/method)

  https://example.com That has a iframe linking to...

  https://example.com/utilities/redirect.html Which has a simple js redirect script like...

  document.location.href ="http://thenonsslsite.com";

• Alternatively, you could add an RSS feed or write some reader/parser to read the http site and display it within your https site.

• You could/should also recommend to the http site owner that they create an ssl connection. If for no other reason than it increases seo.

Unless you can get the http site owner to create an ssl certificate, the most secure and permanent solution would be to create an RSS feed grabing the content you need (presumably you are not actually 'doing' anything on the http site -that is to say not logging in to any system).

The real issue is that having http elements inside a https site represents a security issue. There are no completely kosher ways around this security risk so the above are just current work arounds.

Note, that you can disable this security measure in most browsers (yourself, not for others). Also note that these 'hacks' may become obsolete over time.

Connection.Response resp = Jsoup.connect(url) //
                .timeout(20000) //
                .method(Connection.Method.GET) //
                .execute();

actually, the error occurs when you have slow internet so try to maximize the timeout time and then your code will definitely work as it works for me.

The embed URL for a channel's live stream is:

https://www.youtube.com/embed/live_stream?channel=CHANNEL_ID

You can find your CHANNEL_ID at https://www.youtube.com/account_advanced

INSERT INTO Destination SELECT * FROM Source;

See SQL As Understood By SQLite: INSERT for a formal definition.

There is a bitshift trick I use if I want to to convert from bytes to any other unit. If you do a right shift by 10 you basically shift it by an order (multiple).

Example: 5GB are 5368709120 bytes

print (5368709120 >> 10)  # 5242880 kilobytes (kB)
print (5368709120 >> 20 ) # 5120 megabytes (MB)
print (5368709120 >> 30 ) # 5 gigabytes (GB)

>>> string="abc&def#ghi"
>>> for ch in ['&','#']:
...   if ch in string:
...      string=string.replace(ch,"\\"+ch)
...
>>> print string
abc\&def\#ghi

This will help

In terminal or IPython, type:

help('modules')

then

In [1]: import                      #import press-TAB
Display all 631 possibilities? (y or n)
ANSI                   audiodev               markupbase
AptUrl                 audioop                markupsafe
ArgImagePlugin         avahi                  marshal
BaseHTTPServer         axi                    math
Bastion                base64                 md5
BdfFontFile            bdb                    mhlib
BmpImagePlugin         binascii               mimetools
BufrStubImagePlugin    binhex                 mimetypes
CDDB                   bisect                 mimify
CDROM                  bonobo                 mmap
CGIHTTPServer          brlapi                 mmkeys
Canvas                 bsddb                  modulefinder
CommandNotFound        butterfly              multifile
ConfigParser           bz2                    multiprocessing
ContainerIO            cPickle                musicbrainz2
Cookie                 cProfile               mutagen
Crypto                 cStringIO              mutex
CurImagePlugin         cairo                  mx
DLFCN                  calendar               netrc
DcxImagePlugin         cdrom                  new
Dialog                 cgi                    nis
DiscID                 cgitb                  nntplib
DistUpgrade            checkbox               ntpath

The Maven Wrapper is an excellent choice for projects that need a specific version of Maven (or for users that don't want to install Maven at all). Instead of installing many versions of it in the operating system, we can just use the project-specific wrapper script.

mvnw: it's an executable Unix shell script used in place of a fully installed Maven

mvnw.cmd: it's for Windows environment

Use Cases

The wrapper should work with different operating systems such as:

• Linux
• OSX
• Windows
• Solaris

After that, we can run our goals like this for the Unix system:

./mvnw clean install

And the following command for Batch:

./mvnw.cmd clean install

If we don't have the specified Maven in the wrapper properties, it'll be downloaded and installed in the folder $USER_HOME/.m2/wrapper/dists of the system.

Maven Wrapper plugin

Maven Wrapper plugin to make auto installation in a simple Spring Boot project.

First, we need to go in the main folder of the project and run this command:

mvn -N io.takari:maven:wrapper

We can also specify the version of Maven:

mvn -N io.takari:maven:wrapper -Dmaven=3.5.2

The option -N means –non-recursive so that the wrapper will only be applied to the main project of the current directory, not in any submodules.

Source 1 (further reading): https://www.baeldung.com/maven-wrapper

Just for the sake of delivering the shortest solution, here is mine:

^([1-9]\d?|100)$

working fiddle

try running after changing file name from '-' to `_'

for eg: .\my_app\my_fle.bat

instead of .\\my-app\my-fle.bat

Or

cd my_app  
 .\my_file.bat

Didn't see apporach with slice method. So i'm just leave it here:

function endsWith(str, suffix) {
    return str.slice(-suffix.length) === suffix
}

Using brew and nvm on Mac OSX:

If you're not using nvm, first uninstall nodejs. Then install Homebrew if not already installed. Then install nvm and node:

brew install nvm
nvm ls-remote    # find the version you want
nvm install v7.10.0
nvm alias default v7.10.0    # set default node version on a shell

You can now easily switch node versions when needed.

Bonus: If you see a "tar: invalid option" error when using nvm, brew install gnu-tar and follow the instructions brew gives you to set your PATH.

In RHEL 7, I use this command to filter several ports in LISTEN State:

sudo netstat -tulpn | grep LISTEN | egrep '(8080 |8082 |8083 | etc )'

>>> a = np.random.randint(0, 5, size=(5, 4))
>>> a
array([[0, 3, 3, 2],
       [4, 1, 1, 2],
       [3, 4, 2, 4],
       [2, 4, 3, 0],
       [1, 2, 3, 4]])
>>> 
>>> a[a > 3] = -101
>>> a
array([[   0,    3,    3,    2],
       [-101,    1,    1,    2],
       [   3, -101,    2, -101],
       [   2, -101,    3,    0],
       [   1,    2,    3, -101]])
>>>

See, eg, Indexing with boolean arrays.

You can truncate the date part:

select * from table1 where trunc(field1) = to_date('2012-01-01', 'YYYY-MM-DD')

The trouble with this approach is that any index on field1 wouldn't be used due to the function call.

Alternatively (and more index friendly)

select * from table1 
 where field1 >= to_timestamp('2012-01-01', 'YYYY-MM-DD') 
   and field1 < to_timestamp('2012-01-02', 'YYYY-MM-DD')

One option is to use the delete method as follows:

StringBuffer sb = new StringBuffer();
for (int n = 0; n < 10; n++) {
   sb.append("a");

   // This will clear the buffer
   sb.delete(0, sb.length());
}

Another option (bit cleaner) uses setLength(int len):

sb.setLength(0);

See Javadoc for more info:

As you said, "almost every system".

char is probably one of the less likely to change, but once you start using uint16_t and friends, using uint8_t blends better, and may even be part of a coding standard.

First suggested solution works, we just need to change

selBox.value = val;

To

selBox.innerText = val;

i.e.,

HTML:

<button (click)="copyMessage('This goes to Clipboard')" value="click to copy" >Copy this</button>

.ts file:

copyMessage(val: string){
    const selBox = document.createElement('textarea');
    selBox.style.position = 'fixed';
    selBox.style.left = '0';
    selBox.style.top = '0';
    selBox.style.opacity = '0';
    selBox.innerText = val;
    document.body.appendChild(selBox);
    selBox.focus();
    selBox.select();
    document.execCommand('copy');
    document.body.removeChild(selBox);
  }

Like Robert Nishihara mentioned, Apache Arrow makes this easy, specifically with the Plasma in-memory object store, which is what Ray is built on.

I made brain-plasma specifically for this reason - fast loading and reloading of big objects in a Flask app. It's a shared-memory object namespace for Apache Arrow-serializable objects, including pickle'd bytestrings generated by pickle.dumps(...).

The key difference with Apache Ray and Plasma is that it keeps track of object IDs for you. Any processes or threads or programs that are running on locally can share the variables' values by calling the name from any Brain object.

$ pip install brain-plasma

$ plasma_store -m 10000000 -s /tmp/plasma

from brain_plasma import Brain
brain = Brain(path='/tmp/plasma/)

brain['a'] = [1]*10000

brain['a']
# >>> [1,1,1,1,...]

MD5 is bad because of collision problems - two different passwords possibly generating the same md-5.

Sha-1 would be plenty secure for this. The reason you store the salted sha-1 version of the password is so that you the swerver do not keep the user's apassword on file, that they may be using with other people's servers. Otherwise, what difference does it make?

If the hacker steals your entire unencrypted database some how, the only thing a hashed salted password does is prevent him from impersonating the user for future signons - the hacker already has the data.

What good does it do the attacker to have the hashed value, if what your user inputs is a plain password?

And even if the hacker with future technology could generate a million sha-1 keys a second for a brute force attack, would your server handle a million logons a second for the hacker to test his keys? That's if you are letting the hacker try to logon with the salted sha-1 instead of a password like a normal logon.

The best bet is to limit bad logon attempts to some reasonable number - 25 for example, and then time the user out for a minute or two. And if the cumulative bady logon attempts hits 250 within 24 hours, shut the account access down and email the owner.

I would use lambda function on a Series of a DataFrame like this:

f = lambda x: 0 if x>100 else 1
df['my_column'] = df['my_column'].map(f)

I do not assert that this is an efficient way, but it works fine.

[<- with mapply is a bit faster than sapply.

> dat[mapply(is.infinite, dat)] <- NA

With mnel's data, the timing is

> system.time(dat[mapply(is.infinite, dat)] <- NA)
#   user  system elapsed 
# 15.281   0.000  13.750 

You can remove public keyword from your functions, because, you have to define a class in order to declare public, private or protected function

Sort Mixed Array (alphabets and numbers)

function naturalCompare(a, b) {_x000D_
   var ax = [], bx = [];_x000D_
_x000D_
   a.replace(/(\d+)|(\D+)/g, function (_, $1, $2) { ax.push([$1 || Infinity, $2 || ""]) });_x000D_
   b.replace(/(\d+)|(\D+)/g, function (_, $1, $2) { bx.push([$1 || Infinity, $2 || ""]) });_x000D_
_x000D_
   while (ax.length && bx.length) {_x000D_
     var an = ax.shift();_x000D_
     var bn = bx.shift();_x000D_
     var nn = (an[0] - bn[0]) || an[1].localeCompare(bn[1]);_x000D_
     if (nn) return nn;_x000D_
   }_x000D_
_x000D_
   return ax.length - bx.length;_x000D_
}_x000D_
_x000D_
let builds = [ _x000D_
    { id: 1, name: 'Build 91'}, _x000D_
    { id: 2, name: 'Build 32' }, _x000D_
    { id: 3, name: 'Build 13' }, _x000D_
    { id: 4, name: 'Build 24' },_x000D_
    { id: 5, name: 'Build 5' },_x000D_
    { id: 6, name: 'Build 56' }_x000D_
]_x000D_
_x000D_
let sortedBuilds = builds.sort((n1, n2) => {_x000D_
  return naturalCompare(n1.name, n2.name)_x000D_
})_x000D_
_x000D_
console.log('Sorted by name property')_x000D_
console.log(sortedBuilds)

When you do a push, git only takes the changes that you have committed.

Remember when you do a git status it shows you the files you changed since the last push?

Once you commit those changes and do a push they are the only files that get pushed so you don't have to worry about thinking that the entire master gets pushed because in reality it does not.

How to push a single file:

git commit yourfile.js
git status
git push origin master

A lot (I would even say most) people do.

What's really important about exceptions, is that if you don't write any handling code - the result is perfectly safe and well-behaved. Too eager to panic, but safe.

You need to actively make mistakes in handlers to get something unsafe, and only catch(...){} will compare to ignoring error code.

I had an issue in Pixel 3, Android 11 that when my service was running very short, then the foreground notification was not dismissed.

Adding 100ms delay before stopForeground() stopSelf() seems to help.

People write here that stopForeground() should be called before stopSelf(). I cannot confirm, but I guess it doesn't bother to do that.

public class AService extends Service {

@Override
public void onCreate() {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
        startForeground(
            getForegroundNotificationId(),
            channelManager.buildBackgroundInfoNotification(getNotificationTitle(), getNotificationText()),
            ServiceInfo.FOREGROUND_SERVICE_TYPE_DATA_SYNC);
    } else {
        startForeground(getForegroundNotificationId(),
            channelManager.buildBackgroundInfoNotification(getNotificationTitle(), getNotificationText())
        );
    }

@Override
public int onStartCommand(Intent intent, int flags, int startId) {
    startForeground();

    if (hasQueueMoreItems()) {
        startWorkerThreads();
    } else {
        stopForeground(true);
        stopSelf();
    }
    return START_STICKY;
}

private class WorkerRunnable implements Runnable {

    @Override
    public void run() {

        while (getItem() != null && !isLoopInterrupted) {
            doSomething(getItem())   
        }

        waitALittle();
        stopForeground(true);
        stopSelf();
    }

    private void waitALittle() {
        try {
            Thread.sleep(100);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }
}
}

I would use ASP.NET Ajax Filter TextBoxExtender control

https://www.aspsnippets.com/Articles/ASPNet-AJAX-FilteredTextBoxExtender-Control-Example.aspx

just change your JDK I installed the JDK of SUN not Oracle and it works for me....

There is a patch for Eclipse:
https://bugs.eclipse.org/bugs/attachment.cgi?id=262418&action=edit

Download this patch and put it to the plugins directory of your Eclipse installation. It will replace the default "org.eclipse.jst.server.tomcat.core_1.1.800.v201602282129.jar".

NOTE
After you add this patch you must choose "Apache Tomcat v9.0" when adding a server runtime environment in the Eclipse (Preferences > Server > Runtime Environments).
I.e. this patch allows you to select either Tomcat version 9.x or Tomcat version 8.5.x when adding Apache Tomcat v.9.0 runtime environment.

More details on can be found on the related bug report page: https://bugs.eclipse.org/bugs/show_bug.cgi?id=494936

Make sure you are using this org.json: https://mvnrepository.com/artifact/org.json/json

if you are using Java 8 then you can use

import org.json.JSONArray;
import org.json.JSONObject;

JSONArray array = ...;

array.forEach(item -> {
    JSONObject obj = (JSONObject) item;
    parse(obj);
});

Just added a simple test to prove that it works:

Add the following dependency into your pom.xml file (To prove that it works, I have used the old jar which was there when I have posted this answer)

<dependency>
    <groupId>org.json</groupId>
    <artifactId>json</artifactId>
    <version>20160810</version>
</dependency>

And the simple test code snippet will be:

import org.json.JSONArray;
import org.json.JSONObject;

public class Test {
    public static void main(String args[]) {
        JSONArray array = new JSONArray();

        JSONObject object = new JSONObject();
        object.put("key1", "value1");

        array.put(object);

        array.forEach(item -> {
            System.out.println(item.toString());
        });
    }
}

output:

{"key1":"value1"}

Please, don't do it like that (passing GET var to be a part of a system call). Use ZipArchive instead.

So, your code should look like:

$zipArchive = new ZipArchive();
$result = $zipArchive->open($_GET["master"]);
if ($result === TRUE) {
    $zipArchive ->extractTo("my_dir");
    $zipArchive ->close();
    // Do something else on success
} else {
    // Do something on error
}

And to answer your question, your error is 'something $var something else' should be "something $var something else" (in double quotes).

I suggest you check out chunked and disk.frame. They both have functions for reading in CSVs chunk-by-chunk.

In particular, disk.frame::csv_to_disk.frame may be the function you are after?

The key things here are

1. The entries in the array are objects, and
2. You don't want modifications to an object in one array to show up in the other array.

That means we need to not just copy the objects to a new array (or a target array), but also create copies of the objects.

If the destination array doesn't exist yet...

...use map to create a new array, and copy the objects as you go:

const newArray = sourceArray.map(obj => /*...create and return copy of `obj`...*/);

...where the copy operation is whatever way you prefer to copy objects, which varies tremendously project to project based on use case. That topic is covered in depth in the answers to this question. But for instance, if you only want to copy the objects but not any objects their properties refer to, you could use spread notation (ES2015+):

const newArray = sourceArray.map(obj => ({...obj}));

That does a shallow copy of each object (and of the array). Again, for deep copies, see the answers to the question linked above.

Here's an example using a naive form of deep copy that doesn't try to handle edge cases, see that linked question for edge cases:

function naiveDeepCopy(obj) {
    const newObj = {};
    for (const key of Object.getOwnPropertyNames(obj)) {
        const value = obj[key];
        if (value && typeof value === "object") {
            newObj[key] = {...value};
        } else {
            newObj[key] = value;
        }
    }
    return newObj;
}
const sourceArray = [
    {
        name: "joe",
        address: {
            line1: "1 Manor Road",
            line2: "Somewhere",
            city: "St Louis",
            state: "Missouri",
            country: "USA",
        },
    },
    {
        name: "mohammed",
        address: {
            line1: "1 Kings Road",
            city: "London",
            country: "UK",
        },
    },
    {
        name: "shu-yo",
    },
];
const newArray = sourceArray.map(naiveDeepCopy);
// Modify the first one and its sub-object
newArray[0].name = newArray[0].name.toLocaleUpperCase();
newArray[0].address.country = "United States of America";
console.log("Original:", sourceArray);
console.log("Copy:", newArray);

.as-console-wrapper {
    max-height: 100% !important;
}

If the destination array exists...

...and you want to append the contents of the source array to it, you can use push and a loop:

for (const obj of sourceArray) {
    destinationArray.push(copy(obj));
}

Sometimes people really want a "one liner," even if there's no particular reason for it. If you refer that, you could create a new array and then use spread notation to expand it into a single push call:

destinationArray.push(...sourceArray.map(obj => copy(obj)));

Set content-type and other headers before you write the file out. For small files the content is buffered, and the browser gets the headers first. For big ones the data come first.

Here's a possible way to do it:

$string=exec('getmac');
$mac=substr($string, 0, 17); 
echo $mac;

You can just add a class when it is visible. Add a class, show. Then check for it have a class:

$('#elementId').hasClass('show');

It returns true if you have the show class.

Add CSS like this:

.show{ display: block; }

Which WebControl are you using? Did you try?

DateTime.Now.ToString("yyyy-MM-dd");

This was bugging me too, since this was a standard feature in Sublime Text 2, but somehow automatic indentation no longer worked in Sublime Text 3 for HTML files.

My solution was to find the Miscellaneous.tmPreferences file from Sublime Text 2 (found under %AppData%/Roaming/Sublime Text 2/Packages/HTML) and copy those settings to the same file for ST3.

Now package handling has been made more difficult for ST3, but luckily you can just add the files to your %AppData%/Roaming/Sublime Text 3/Packages folder and they overwrite default settings in the install directory. Just save this file as "%AppData%/Roaming/Sublime Text 3/Packages/HTML/Miscellaneous.tmPreferences" and auto indent works again like it did in ST2.

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>name</key>
    <string>Miscellaneous</string>
    <key>scope</key>
    <string>text.html</string>
    <key>settings</key>
    <dict>
        <key>decreaseIndentPattern</key>
            <string>(?x)
            ^\s*
            (&lt;/(?!html)
              [A-Za-z0-9]+\b[^&gt;]*&gt;
            |--&gt;
            |&lt;\?(php)?\s+(else(if)?|end(if|for(each)?|while))
            |\}
            )</string>
        <key>batchDecreaseIndentPattern</key>
            <string>(?x)
            ^\s*
            (&lt;/(?!html)
              [A-Za-z0-9]+\b[^&gt;]*&gt;
            |--&gt;
            |&lt;\?(php)?\s+(else(if)?|end(if|for(each)?|while))
            |\}
            )</string>
        <key>increaseIndentPattern</key>
            <string>(?x)
            ^\s*
            &lt;(?!\?|area|base|br|col|frame|hr|html|img|input|link|meta|param|[^&gt;]*/&gt;)
              ([A-Za-z0-9]+)(?=\s|&gt;)\b[^&gt;]*&gt;(?!.*&lt;/\1&gt;)
            |&lt;!--(?!.*--&gt;)
            |&lt;\?php.+?\b(if|else(?:if)?|for(?:each)?|while)\b.*:(?!.*end\1)
            |\{[^}"']*$
            </string>
        <key>batchIncreaseIndentPattern</key>
            <string>(?x)
            ^\s*
            &lt;(?!\?|area|base|br|col|frame|hr|html|img|input|link|meta|param|[^&gt;]*/&gt;)
              ([A-Za-z0-9]+)(?=\s|&gt;)\b[^&gt;]*&gt;(?!.*&lt;/\1&gt;)
            |&lt;!--(?!.*--&gt;)
            |&lt;\?php.+?\b(if|else(?:if)?|for(?:each)?|while)\b.*:(?!.*end\1)
            |\{[^}"']*$
            </string>
        <key>bracketIndentNextLinePattern</key>
         <string>&lt;!DOCTYPE(?!.*&gt;)</string>
    </dict>
</dict>
</plist>

In bash version 3 you can use the '=~' operator:

if [[ "$date" =~ ^[0-9]{8}$ ]]; then
    echo "Valid date"
else
    echo "Invalid date"
fi

Reference: http://tldp.org/LDP/abs/html/bashver3.html#REGEXMATCHREF

NOTE: The quoting in the matching operator within the double brackets, [[ ]], is no longer necessary as of Bash version 3.2

• If you are in base directory location of your tracked files then git checkout . will works otherwise it won't work

Like as @folone, but correct

private static List<Date> getDatesBetween(final Date date1, final Date date2) {
    List<Date> dates = new ArrayList<>();
    Calendar c1 = new GregorianCalendar();
    c1.setTime(date1);
    Calendar c2 = new GregorianCalendar();
    c2.setTime(date2);
    int a = c1.get(Calendar.DATE);
    int b = c2.get(Calendar.DATE);
    while ((c1.get(Calendar.YEAR) != c2.get(Calendar.YEAR)) || (c1.get(Calendar.MONTH) != c2.get(Calendar.MONTH)) || (c1.get(Calendar.DATE) != c2.get(Calendar.DATE))) {
        c1.add(Calendar.DATE, 1);
        dates.add(new Date(c1.getTimeInMillis()));
    }
    return dates;
}

I prefer using the Calendar object.

Calendar now = GregorianCalendar.getInstance()

I find it much easier to work with. You can also get a Date object from the Calendar.

http://java.sun.com/javase/6/docs/api/java/util/GregorianCalendar.html

Using jQuery 1.9 and above:

$("#mySelect :selected").prop('selected', false);

In my case it was related to a .ps1 referral inside the ps1 script which was not signed (you need to unblock it at the file properties) , also I added as first line:

Set-ExecutionPolicy -ExecutionPolicy Unrestricted -Force

Then it worked

Windows dll error 126 can have many root causes. The most useful methods I have found to debug this are:

1. Use dependency walker to look for any obvious problems (which you have already done)
2. Use the sysinternals utility Process Monitor http://technet.microsoft.com/en-us/sysinternals/bb896645 from Microsoft to trace all file access while your dll is trying to load. With this utility, you will see everything that that dll is trying to pull in and usually the problem can be determined from there.

If by array of String you mean array of char:

public class Test
{
    public static void main(String[] args)
    {
        String test = "aabbab ";
        char[] t = test.toCharArray();

        for(char c : t)
            System.out.println(c);    

        System.out.println("The end!");    
    }
}  

If not, the String.split() function could transform a String into an array of String

See those String.split examples

/* String to split. */
String str = "one-two-three";
String[] temp;

/* delimiter */
String delimiter = "-";
/* given string will be split by the argument delimiter provided. */
temp = str.split(delimiter);
/* print substrings */
for(int i =0; i < temp.length ; i++)
  System.out.println(temp[i]);

The input.split("(?!^)") proposed by Joachim in his answer is based on:

• a '?!' zero-width negative lookahead (see Lookaround)
• the caret '^' as an Anchor to match the start of the string the regex pattern is applied to

Any character which is not the first will be split. An empty string will not be split but return an empty array.

Number of swap in each iteration

• Insertion-sort does at most 1 swap in each iteration.
• Bubble-sort does 0 to n swaps in each iteration.

Accessing and changing sorted part

• Insertion-sort accesses(and changes when needed) the sorted part to find the correct position of a number in consideration.
• When optimized, Bubble-sort does not access what is already sorted.

Online or not

• Insertion-sort is online. That means Insertion-sort takes one input at a time before it puts in appropriate position. It does not have to compare only adjacent-inputs.
• Bubble-sort is not-online. It does not operate one input at a time. It handles a group of inputs(if not all) in each iteration. Bubble-sort only compare and swap adjacent-inputs in each iteration.

Iterators:

Iterator are objects which uses next() method to get next value of sequence.

Generators:

A generator is a function that produces or yields a sequence of values using yield method.

Every next() method call on generator object(for ex: f as in below example) returned by generator function(for ex: foo() function in below example), generates next value in sequence.

When a generator function is called, it returns an generator object without even beginning execution of the function. When next() method is called for the first time, the function starts executing until it reaches yield statement which returns the yielded value. The yield keeps track of i.e. remembers last execution. And second next() call continues from previous value.

The following example demonstrates the interplay between yield and call to next method on generator object.

>>> def foo():
...     print "begin"
...     for i in range(3):
...         print "before yield", i
...         yield i
...         print "after yield", i
...     print "end"
...
>>> f = foo()
>>> f.next()
begin
before yield 0            # Control is in for loop
0
>>> f.next()
after yield 0             
before yield 1            # Continue for loop
1
>>> f.next()
after yield 1
before yield 2
2
>>> f.next()
after yield 2
end
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
StopIteration
>>>

BeautifulSoup(text, features="html.parser").text 

For the people who were seeking deep info in my answer, sorry.

I'll explain it.

Beautifulsoup is a widely use python package that helps the user (developer) to interact with HTML within python.

The above like just take all the HTML text (text) and cast it to Beautifulsoup object - that means behind the sense its parses everything up (Every HTML tag within the given text)

Once done so, we just request all the text from within the HTML object.

I did this inside the render() method:

  render() {
    const project = () => {
      switch(this.projectName) {

        case "one":   return <ComponentA />;
        case "two":   return <ComponentB />;
        case "three": return <ComponentC />;
        case "four":  return <ComponentD />;

        default:      return <h1>No project match</h1>
      }
    }

    return (
      <div>{ project() }</div>
    )
  }

I tried to keep the render() return clean, so I put my logic in a 'const' function right above. This way I can also indent my switch cases neatly.

modern shells already support arrays( and even associative arrays). So please do use them, and use less of eval.

var1="this is the real value"
array=("$var1")
# or array[0]="$var1"

then when you want to call it , echo ${array[0]}

To close all splits, I usually place the cursor in the window that shall be the on-ly visible one and then do :on which makes the current window the on-ly visible window. Nice mnemonic to remember.

Edit: :help :on showed me that these commands are the same:

• :on
• :only
• CTRL-w CTRL-o
• And yes, also CTRL-W o has the same effect (as Nathan answered).

Each of these four closes all windows except the active one.

The + (String Concatenation) does not work on SQL Server for the image, ntext, or text data types.

In fact, image, ntext, and text are all deprecated.

ntext, text, and image data types will be removed in a future version of MicrosoftSQL Server. Avoid using these data types in new development work, and plan to modify applications that currently use them. Use nvarchar(max), varchar(max), and varbinary(max) instead.

That said if you are using an older version of SQL Server than you want to use UPDATETEXT to perform your concatenation. Which Colin Stasiuk gives a good example of in his blog post String Concatenation on a text column (SQL 2000 vs SQL 2005+).

$ sudo gem install cocoapods-deintegrate cocoapods-clean
$ pod deintegrate
$ pod clean
$ rm Podfile

This happens to me every time I add a pod to the podfile.

I constantly try and find the problem but I just go round in circles again and again!

The error messages range, however the way to fix it is the same every time!

Comment out(#) ALL of the pods in the podfile and run pod install in terminal.

Then...

Uncomment out all of the pods in the podfile and run pod install again.

This has worked for me every single time!

System.Convert.ChangeType(jtoken.ToString(), targetType);

or

JsonConvert.DeserializeObject(jtoken.ToString(), targetType);

--EDIT--

Uzair, Here is a complete example just to show you they work

string json = @"{
        ""id"" : 77239923,
        ""username"" : ""UzEE"",
        ""email"" : ""[email protected]"",
        ""name"" : ""Uzair Sajid"",
        ""twitter_screen_name"" : ""UzEE"",
        ""join_date"" : ""2012-08-13T05:30:23Z05+00"",
        ""timezone"" : 5.5,
        ""access_token"" : {
            ""token"" : ""nkjanIUI8983nkSj)*#)(kjb@K"",
            ""scope"" : [ ""read"", ""write"", ""bake pies"" ],
            ""expires"" : 57723
        },
        ""friends"" : [{
            ""id"" : 2347484,
            ""name"" : ""Bruce Wayne""
        },
        {
            ""id"" : 996236,
            ""name"" : ""Clark Kent""
        }]
    }";

var obj = (JObject)JsonConvert.DeserializeObject(json);
Type type = typeof(int);
var i1 = System.Convert.ChangeType(obj["id"].ToString(), type);
var i2 = JsonConvert.DeserializeObject(obj["id"].ToString(), type);

I tried the above but found my issue was I used a | in the name of the DSN (I have multipled ODBC connectors - one for each DB - to make sure I don't comingle data)

I replaced the | (pipe) with a _ and all now works fine.

I was trying to call SQL Server from Alteryx.

Make a class that will fit table cell width to content

.table td.fit, 
.table th.fit {
    white-space: nowrap;
    width: 1%;
}

$blue_keys = array_search("blue", array_keys($a));

http://php.net/manual/en/function.array-keys.php

This is my solution which works fairly well:

private Location bestLocation = null;
private Looper looper;
private boolean networkEnabled = false, gpsEnabled = false;

private synchronized void setLooper(Looper looper) {
    this.looper = looper;
}

private synchronized void stopLooper() {
    if (looper == null) return;
    looper.quit();
}

@Override
protected void runTask() {
    final LocationManager locationManager = (LocationManager) service
            .getSystemService(Context.LOCATION_SERVICE);
    final SharedPreferences prefs = getPreferences();
    final int maxPollingTime = Integer.parseInt(prefs.getString(
            POLLING_KEY, "0"));
    final int desiredAccuracy = Integer.parseInt(prefs.getString(
            DESIRED_KEY, "0"));
    final int acceptedAccuracy = Integer.parseInt(prefs.getString(
            ACCEPTED_KEY, "0"));
    final int maxAge = Integer.parseInt(prefs.getString(AGE_KEY, "0"));
    final String whichProvider = prefs.getString(PROVIDER_KEY, "any");
    final boolean canUseGps = whichProvider.equals("gps")
            || whichProvider.equals("any");
    final boolean canUseNetwork = whichProvider.equals("network")
            || whichProvider.equals("any");
    if (canUseNetwork)
        networkEnabled = locationManager
                .isProviderEnabled(LocationManager.NETWORK_PROVIDER);
    if (canUseGps)
        gpsEnabled = locationManager
                .isProviderEnabled(LocationManager.GPS_PROVIDER);
    // If any provider is enabled now and we displayed a notification clear it.
    if (gpsEnabled || networkEnabled) removeErrorNotification();
    if (gpsEnabled)
        updateBestLocation(locationManager
                .getLastKnownLocation(LocationManager.GPS_PROVIDER));
    if (networkEnabled)
        updateBestLocation(locationManager
                .getLastKnownLocation(LocationManager.NETWORK_PROVIDER));
    if (desiredAccuracy == 0
            || getLocationQuality(desiredAccuracy, acceptedAccuracy,
                    maxAge, bestLocation) != LocationQuality.GOOD) {
        // Define a listener that responds to location updates
        LocationListener locationListener = new LocationListener() {

            public void onLocationChanged(Location location) {
                updateBestLocation(location);
                if (desiredAccuracy != 0
                        && getLocationQuality(desiredAccuracy,
                                acceptedAccuracy, maxAge, bestLocation)
                                == LocationQuality.GOOD)
                    stopLooper();
            }

            public void onProviderEnabled(String provider) {
                if (isSameProvider(provider,
                        LocationManager.NETWORK_PROVIDER))networkEnabled =true;
                else if (isSameProvider(provider,
                        LocationManager.GPS_PROVIDER)) gpsEnabled = true;
                // The user has enabled a location, remove any error
                // notification
                if (canUseGps && gpsEnabled || canUseNetwork
                        && networkEnabled) removeErrorNotification();
            }

            public void onProviderDisabled(String provider) {
                if (isSameProvider(provider,
                        LocationManager.NETWORK_PROVIDER))networkEnabled=false;
                else if (isSameProvider(provider,
                        LocationManager.GPS_PROVIDER)) gpsEnabled = false;
                if (!gpsEnabled && !networkEnabled) {
                    showErrorNotification();
                    stopLooper();
                }
            }

            public void onStatusChanged(String provider, int status,
                    Bundle extras) {
                Log.i(LOG_TAG, "Provider " + provider + " statusChanged");
                if (isSameProvider(provider,
                        LocationManager.NETWORK_PROVIDER)) networkEnabled = 
                        status == LocationProvider.AVAILABLE
                        || status == LocationProvider.TEMPORARILY_UNAVAILABLE;
                else if (isSameProvider(provider,
                        LocationManager.GPS_PROVIDER))
                    gpsEnabled = status == LocationProvider.AVAILABLE
                      || status == LocationProvider.TEMPORARILY_UNAVAILABLE;
                // None of them are available, stop listening
                if (!networkEnabled && !gpsEnabled) {
                    showErrorNotification();
                    stopLooper();
                }
                // The user has enabled a location, remove any error
                // notification
                else if (canUseGps && gpsEnabled || canUseNetwork
                        && networkEnabled) removeErrorNotification();
            }
        };
        if (networkEnabled || gpsEnabled) {
            Looper.prepare();
            setLooper(Looper.myLooper());
            // Register the listener with the Location Manager to receive
            // location updates
            if (canUseGps)
                locationManager.requestLocationUpdates(
                        LocationManager.GPS_PROVIDER, 1000, 1,
                        locationListener, Looper.myLooper());
            if (canUseNetwork)
                locationManager.requestLocationUpdates(
                        LocationManager.NETWORK_PROVIDER, 1000, 1,
                        locationListener, Looper.myLooper());
            Timer t = new Timer();
            t.schedule(new TimerTask() {

                @Override
                public void run() {
                    stopLooper();
                }
            }, maxPollingTime * 1000);
            Looper.loop();
            t.cancel();
            setLooper(null);
            locationManager.removeUpdates(locationListener);
        } else // No provider is enabled, show a notification
        showErrorNotification();
    }
    if (getLocationQuality(desiredAccuracy, acceptedAccuracy, maxAge,
            bestLocation) != LocationQuality.BAD) {
        sendUpdate(new Event(EVENT_TYPE, locationToString(desiredAccuracy,
                acceptedAccuracy, maxAge, bestLocation)));
    } else Log.w(LOG_TAG, "LocationCollector failed to get a location");
}

private synchronized void showErrorNotification() {
    if (notifId != 0) return;
    ServiceHandler handler = service.getHandler();
    NotificationInfo ni = NotificationInfo.createSingleNotification(
            R.string.locationcollector_notif_ticker,
            R.string.locationcollector_notif_title,
            R.string.locationcollector_notif_text,
            android.R.drawable.stat_notify_error);
    Intent intent = new Intent(
            android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS);
    ni.pendingIntent = PendingIntent.getActivity(service, 0, intent,
            PendingIntent.FLAG_UPDATE_CURRENT);
    Message msg = handler.obtainMessage(ServiceHandler.SHOW_NOTIFICATION);
    msg.obj = ni;
    handler.sendMessage(msg);
    notifId = ni.id;
}

private void removeErrorNotification() {
    if (notifId == 0) return;
    ServiceHandler handler = service.getHandler();
    if (handler != null) {
        Message msg = handler.obtainMessage(
                ServiceHandler.CLEAR_NOTIFICATION, notifId, 0);
        handler.sendMessage(msg);
        notifId = 0;
    }
}

@Override
public void interrupt() {
    stopLooper();
    super.interrupt();
}

private String locationToString(int desiredAccuracy, int acceptedAccuracy,
        int maxAge, Location location) {
    StringBuilder sb = new StringBuilder();
    sb.append(String.format(
            "qual=%s time=%d prov=%s acc=%.1f lat=%f long=%f",
            getLocationQuality(desiredAccuracy, acceptedAccuracy, maxAge,
                    location), location.getTime() / 1000, // Millis to
                                                            // seconds
            location.getProvider(), location.getAccuracy(), location
                    .getLatitude(), location.getLongitude()));
    if (location.hasAltitude())
        sb.append(String.format(" alt=%.1f", location.getAltitude()));
    if (location.hasBearing())
        sb.append(String.format(" bearing=%.2f", location.getBearing()));
    return sb.toString();
}

private enum LocationQuality {
    BAD, ACCEPTED, GOOD;

    public String toString() {
        if (this == GOOD) return "Good";
        else if (this == ACCEPTED) return "Accepted";
        else return "Bad";
    }
}

private LocationQuality getLocationQuality(int desiredAccuracy,
        int acceptedAccuracy, int maxAge, Location location) {
    if (location == null) return LocationQuality.BAD;
    if (!location.hasAccuracy()) return LocationQuality.BAD;
    long currentTime = System.currentTimeMillis();
    if (currentTime - location.getTime() < maxAge * 1000
            && location.getAccuracy() <= desiredAccuracy)
        return LocationQuality.GOOD;
    if (acceptedAccuracy == -1
            || location.getAccuracy() <= acceptedAccuracy)
        return LocationQuality.ACCEPTED;
    return LocationQuality.BAD;
}

private synchronized void updateBestLocation(Location location) {
    bestLocation = getBestLocation(location, bestLocation);
}

protected Location getBestLocation(Location location,
        Location currentBestLocation) {
    if (currentBestLocation == null) {
        // A new location is always better than no location
        return location;
    }
    if (location == null) return currentBestLocation;
    // Check whether the new location fix is newer or older
    long timeDelta = location.getTime() - currentBestLocation.getTime();
    boolean isSignificantlyNewer = timeDelta > TWO_MINUTES;
    boolean isSignificantlyOlder = timeDelta < -TWO_MINUTES;
    boolean isNewer = timeDelta > 0;
    // If it's been more than two minutes since the current location, use
    // the new location
    // because the user has likely moved
    if (isSignificantlyNewer) {
        return location;
        // If the new location is more than two minutes older, it must be
        // worse
    } else if (isSignificantlyOlder) {
        return currentBestLocation;
    }
    // Check whether the new location fix is more or less accurate
    int accuracyDelta = (int) (location.getAccuracy() - currentBestLocation
            .getAccuracy());
    boolean isLessAccurate = accuracyDelta > 0;
    boolean isMoreAccurate = accuracyDelta < 0;
    boolean isSignificantlyLessAccurate = accuracyDelta > 200;
    // Check if the old and new location are from the same provider
    boolean isFromSameProvider = isSameProvider(location.getProvider(),
            currentBestLocation.getProvider());
    // Determine location quality using a combination of timeliness and
    // accuracy
    if (isMoreAccurate) {
        return location;
    } else if (isNewer && !isLessAccurate) {
        return location;
    } else if (isNewer && !isSignificantlyLessAccurate
            && isFromSameProvider) {
        return location;
    }
    return bestLocation;
}

/** Checks whether two providers are the same */
private boolean isSameProvider(String provider1, String provider2) {
    if (provider1 == null) return provider2 == null;
    return provider1.equals(provider2);
}

The documentation is here https://laravel.com/docs/5.4/views#view-composers but i will break it down 1.Look for the directory Providers in your root directory and create the for ComposerServiceProvider.php with content

Try this

select * from (
   select ROW_NUMBER() over (order by [salary] desc) as sno,emp_name,   
   [salary] from [dbo].[Emp]
) t 
where t.sno =10

with t as
select top (1) * from       
  (select top (2) emp_name,salary from   [Emp]  e
   order by  salary desc) t
order  by salary asc

a quick way to see your errors whilst testing:

$error= $st->errorInfo();
echo $error[2];

<textarea ><?php echo htmlentities($page_html); ?></textarea>

works fine for me..

"keeping in mind Alexander's suggestion, here is why I think this is a good approach"

if we just try plain <textarea> it may not always work since there may be closing textarea tags which may wrongly close the parent tag and display rest of the HTML source on the parent document, which would look awkward.

using htmlentities converts all applicable characters such as < > to HTML entities which eliminates any possibility of leaks.

There maybe benefits or shortcomings to this approach or a better way of achieving the same results, if so please comment as I would love to learn from them :)

Use a comma to specify a port number with SQL Server:

mycomputer.test.xxx.com,1234

It's not necessary to specify an instance name when specifying the port.

Lots more examples at http://www.connectionstrings.com/. It's saved me a few times.

Since the NameValuePair is deprecated. Thought of sharing my code

public String  performPostCall(String requestURL,
            HashMap<String, String> postDataParams) {

        URL url;
        String response = "";
        try {
            url = new URL(requestURL);

            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            conn.setReadTimeout(15000);
            conn.setConnectTimeout(15000);
            conn.setRequestMethod("POST");
            conn.setDoInput(true);
            conn.setDoOutput(true);


            OutputStream os = conn.getOutputStream();
            BufferedWriter writer = new BufferedWriter(
                    new OutputStreamWriter(os, "UTF-8"));
            writer.write(getPostDataString(postDataParams));

            writer.flush();
            writer.close();
            os.close();
            int responseCode=conn.getResponseCode();

            if (responseCode == HttpsURLConnection.HTTP_OK) {
                String line;
                BufferedReader br=new BufferedReader(new InputStreamReader(conn.getInputStream()));
                while ((line=br.readLine()) != null) {
                    response+=line;
                }
            }
            else {
                response="";

            }
        } catch (Exception e) {
            e.printStackTrace();
        }

        return response;
    }

....

  private String getPostDataString(HashMap<String, String> params) throws UnsupportedEncodingException{
        StringBuilder result = new StringBuilder();
        boolean first = true;
        for(Map.Entry<String, String> entry : params.entrySet()){
            if (first)
                first = false;
            else
                result.append("&");

            result.append(URLEncoder.encode(entry.getKey(), "UTF-8"));
            result.append("=");
            result.append(URLEncoder.encode(entry.getValue(), "UTF-8"));
        }

        return result.toString();
    }

For complicated objects and when performance is not significant i use gson to serialize the object to json text, then deserialize the text to get new object.

gson which based on reflection will works in most cases, except that transient fields will not be copied and objects with circular reference with cause StackOverflowError.

public static <ObjectType> ObjectType Copy(ObjectType AnObject, Class<ObjectType> ClassInfo)
{
    Gson gson = new GsonBuilder().create();
    String text = gson.toJson(AnObject);
    ObjectType newObject = gson.fromJson(text, ClassInfo);
    return newObject;
}
public static void main(String[] args)
{
    MyObject anObject ...
    MyObject copyObject = Copy(o, MyObject.class);

}

People gave good answers but forgot to mention the most important part in my opinion: In the second example the X of the list comprehension is NOT the same as the X of the lambda function, they are totally unrelated. So the second example is actually the same as:

[Lambda X: X*X for I in range(10)]

The internal iterations on range(10) are only responsible for creating 10 similar lambda functions in a list (10 separate functions but totally similar - returning the power 2 of each input).

On the other hand, the first example works totally different, because the X of the iterations DO interact with the results, for each iteration the value is X*X so the result would be [0,1,4,9,16,25, 36, 49, 64 ,81]

$mystring = "this is the text I would like to truncate";

// Pass your variable to the function
$mystring = truncate($mystring);

// Truncated tring printed out;
echo $mystring;

//truncate text function
public function truncate($text) {

    //specify number fo characters to shorten by
    $chars = 25;

    $text = $text." ";
    $text = substr($text,0,$chars);
    $text = substr($text,0,strrpos($text,' '));
    $text = $text."...";
    return $text;
}

Windows version:

cd \Program Files\NVIDIA Corporation\NVSMI

nvidia-smi

Parsing text with delimiters from different email platforms posed a larger-sized version of this problem. They generally have a START and a STOP. Delimiter characters for wildcards kept choking regex. The problem with split is mentioned here & elsewhere - oops, delimiter character gone. It occurred to me to use replace() to give split() something else to consume. Chunk of code:

nuke = '~~~'
start = '|*'
stop = '*|'
julien = (textIn.replace(start,nuke + start).replace(stop,stop + nuke).split(nuke))
keep = [chunk for chunk in julien if start in chunk and stop in chunk]
logging.info('keep: %s',keep)

I know this is buried, but I had caused this issue when I moved a database without giving the NT Service\MSQLSERVER account rights to the directory I moved the database files to. Giving the rights and restarting SQLServer did the trick.

__call__ makes the instance of a class callable. Why would it be required?

Technically __init__ is called once by __new__ when object is created, so that it can be initialized.

But there are many scenarios where you might want to redefine your object, say you are done with your object, and may find a need for a new object. With __call__ you can redefine the same object as if it were new.

This is just one case, there can be many more.

Would add a comment to @Steve Kehlet post but need 50 rep (RIP).

For anyone that has found this post through numerous googling, I found a way to not only find specific files given a time range, but also NOT include the relative paths OR whitespaces that would cause tarring errors. (THANK YOU SO MUCH STEVE.)

find . -name "*.pdf" -type f -mtime 0 -printf "%f\0" | tar -czvf /dir/zip.tar.gz --null -T -

1. . relative directory

2. -name "*.pdf" look for pdfs (or any file type)

3. -type f type to look for is a file

4. -mtime 0 look for files created in last 24 hours

5. -printf "%f\0" Regular -print0 OR -printf "%f" did NOT work for me. From man pages:

This quoting is performed in the same way as for GNU ls. This is not the same quoting mechanism as the one used for -ls and -fls. If you are able to decide what format to use for the output of find then it is normally better to use '\0' as a terminator than to use newline, as file names can contain white space and newline characters.

6. -czvf create archive, filter the archive through gzip , verbosely list files processed, archive name

Edit 2019-08-14: I would like to add, that I was also able to use essentially use the same command in my comment, just using tar itself:

tar -czvf /archiveDir/test.tar.gz --newer-mtime=0 --ignore-failed-read *.pdf

Needed --ignore-failed-read in-case there were no new PDFs for today.

Use whatever navigation key you want to get inside the parentheses, then you can use either yi( or yi) to copy everything within the matching parens. This also works with square brackets (e.g. yi]) and curly braces. In addition to y, you can also delete or change text (e.g. ci), di]).

I tried this with double and single-quotes and it appears to work there as well. For your data, I do:

write (*, '(a)') 'Computed solution coefficients:'

Move cursor to the C, then type yi'. Move the cursor to a blank line, hit p, and get

Computed solution coefficients:

As CMS noted, this works for visual mode selection as well - just use vi), vi}, vi', etc.

1. .NET is the Ecosystem based on c# language
2. .NET Standard is Standard (in other words, specification) of .NET Ecosystem .

.Net Core Class Library is built upon the .Net Standard. .NET Standard you can make only class-library project that cannot be executed standalone and should be referenced by another .NET Core or .NET Framework executable project.If you want to implement a library that is portable to the .Net Framework, .Net Core and Xamarin, choose a .Net Standard Library

3. .NET Framework is a framework based on .NET and it supports Windows and Web applications

(You can make executable project (like Console application, or ASP.NET application) with .NET Framework

4. ASP.NET is a web application development technology which is built over the .NET Framework
5. .NET Core also a framework based on .NET.

It is the new open-source and cross-platform framework to build applications for all operating system including Windows, Mac, and Linux.

6. Xamarin is a framework to develop a cross platform mobile application(iOS, Android, and Windows Mobile) using C#

Implementation support of .NET Standard[blue] and minimum viable platform for full support of .NET Standard (latest: [https://docs.microsoft.com/en-us/dotnet/standard/net-standard#net-implementation-support])

Amusingly, git checkout foo will not work if the working copy is in a directory named foo; however, both git checkout HEAD foo and git checkout ./foo will:

$ pwd
/Users/aaron/Documents/work/foo
$ git checkout foo
D   foo
Already on "foo"
$ git checkout ./foo
$ git checkout HEAD foo

a piece of code who work with python to read rs232 just in case somedoby else need it

ser = serial.Serial('/dev/tty.usbserial', 9600, timeout=0.5)
ser.write('*99C\r\n')
time.sleep(0.1)
ser.close()

No need for NSRange with the following code I just implemented in my project (in Swift):

//Code sets label (yourLabel)'s text to "Tap and hold(BOLD) button to start recording."
let boldAttribute = [
  //You can add as many attributes as you want here.
  NSFontAttributeName: UIFont(name: "HelveticaNeue-Bold", size: 18.0)!
]
        
let regularAttribute = [NSFontAttributeName: UIFont(name: "HelveticaNeue-Light", size: 18.0)!]
        
let beginningAttributedString = NSAttributedString(string: "Tap and ", attributes: regularAttribute )
let boldAttributedString = NSAttributedString(string: "hold ", attributes: boldAttribute)
let endAttributedString = NSAttributedString(string: "button to start recording.", attributes: regularAttribute )
let fullString =  NSMutableAttributedString()
        
fullString.appendAttributedString(beginningAttributedString)
fullString.appendAttributedString(boldAttributedString)
fullString.appendAttributedString(endAttributedString)

yourLabel.attributedText = fullString

@John, Earlz and Nathan. The way I learned it at uni is: functions return values, methods don't. In some languages the syntax is/was actually different. Example (no specific language):

Method SetY(int y) ...
Function CalculateY(int x) As Integer ...

Most languages now use the same syntax for both versions, using void as a return type to say there actually isn't a return type. I assume it's because the syntax is more consistent and easier to change from method to function, and vice versa.

Use GetParent() as shown, works nicely. Add error checking as you need.

var fn = openFileDialogSapTable.FileName;
var currentPath = Path.GetFullPath( fn );
currentPath = Directory.GetParent(currentPath).FullName;

Generally impossible, because List<String> and List<Integer> share the same runtime class.

You might be able to reflect on the declared type of the field holding the list, though (if the declared type does not itself refer to a type parameter whose value you don't know).

if(document.querySelectorAll('input[type="radio"][name="name_of_radio"]:checked').length < 1)

Initial remark:

Never write this:

if ( condition ) statement;

This is much better

if ( condition ) { statement };

Just create to create a good habit.

By making the class immutable as suggested, you can also take advantage of the double to perform the equals and hashCode and compareTo operations

Here's my quick dirty version:

public final class Fraction implements Comparable {

    private final int numerator;
    private final int denominator;
    private final Double internal;

    public static Fraction createFraction( int numerator, int denominator ) { 
        return new Fraction( numerator, denominator );
    }

    private Fraction(int numerator, int denominator) {
        this.numerator   = numerator;
        this.denominator = denominator;
        this.internal = ((double) numerator)/((double) denominator);
    }


    public int getNumerator() {
        return this.numerator;
    }

    public int getDenominator() {
        return this.denominator;
    }


    private double doubleValue() {
        return internal;
    }

    public int compareTo( Object o ) {
        if ( o instanceof Fraction ) { 
            return internal.compareTo( ((Fraction)o).internal );
        }
        return 1;
    }

    public boolean equals( Object o ) {
          if ( o instanceof Fraction ) {  
             return this.internal.equals( ((Fraction)o).internal );
          } 
          return false;
    }

    public int hashCode() { 
        return internal.hashCode();
    }



    public String toString() { 
        return String.format("%d/%d", numerator, denominator );
    }

    public static void main( String [] args ) { 
        System.out.println( Fraction.createFraction( 1 , 2 ) ) ;
        System.out.println( Fraction.createFraction( 1 , 2 ).hashCode() ) ;
        System.out.println( Fraction.createFraction( 1 , 2 ).compareTo( Fraction.createFraction(2,4) ) ) ;
        System.out.println( Fraction.createFraction( 1 , 2 ).equals( Fraction.createFraction(4,8) ) ) ;
        System.out.println( Fraction.createFraction( 3 , 9 ).equals( Fraction.createFraction(1,3) ) ) ;
    }       

}

About the static factory method, it may be useful later, if you subclass the Fraction to handle more complex things, or if you decide to use a pool for the most frequently used objects.

It may not be the case, I just wanted to point it out. :)

See Effective Java first item.

This note from the Android Developer site is what worked for me:

Enable USB debugging on your device. On most devices running Android 3.2 or older, you can find the option under Settings > Applications > Development. On Android 4.0 and newer, it's in Settings > Developer options. Note: On Android 4.2 and newer, Developer options is hidden by default. To make it available, go to Settings > About phone and tap Build number seven times. Return to the previous screen to find Developer options.

One of the most straightforward ways of gettings rid of ^Ms with just an emacs command one-liner:

    C-x h C-u M-| dos2unix    

Analysis:

    C-x h: select current buffer
    C-u: apply following command as a filter, redirecting its output to replace current buffer
    M-| dos2unix: performs `dos2unix` [current buffer]

*nix platforms have the dos2unix utility out-of-the-box, including Mac (with brew). Under Windows, it is widely available too (MSYS2, Cygwin, user-contributed, among others).

Use make (chan int) instead of nil. The first value has to be the same type that your map holds.

package main

import "fmt"

func main() {

    var sessions = map[string] chan int{}
    sessions["somekey"] = make(chan int)

    fmt.Printf ("%d\n", len(sessions)) // 1

    // Remove somekey's value from sessions
    delete(sessions, "somekey")

    fmt.Printf ("%d\n", len(sessions)) // 0
}

UPDATE: Corrected my answer.

In real life you wish to simulate a signal with white noise. You should add to your signal random points that have Normal Gaussian distribution. If we speak about a device that have sensitivity given in unit/SQRT(Hz) then you need to devise standard deviation of your points from it. Here I give function "white_noise" that does this for you, an the rest of a code is demonstration and check if it does what it should.

%matplotlib inline
import numpy as np
import matplotlib.pyplot as plt
from scipy import signal

"""
parameters: 
rhp - spectral noise density unit/SQRT(Hz)
sr  - sample rate
n   - no of points
mu  - mean value, optional

returns:
n points of noise signal with spectral noise density of rho
"""
def white_noise(rho, sr, n, mu=0):
    sigma = rho * np.sqrt(sr/2)
    noise = np.random.normal(mu, sigma, n)
    return noise

rho = 1 
sr = 1000
n = 1000
period = n/sr
time = np.linspace(0, period, n)
signal_pure = 100*np.sin(2*np.pi*13*time)
noise = white_noise(rho, sr, n)
signal_with_noise = signal_pure + noise

f, psd = signal.periodogram(signal_with_noise, sr)

print("Mean spectral noise density = ",np.sqrt(np.mean(psd[50:])), "arb.u/SQRT(Hz)")

plt.plot(time, signal_with_noise)
plt.plot(time, signal_pure)
plt.xlabel("time (s)")
plt.ylabel("signal (arb.u.)")
plt.show()

plt.semilogy(f[1:], np.sqrt(psd[1:]))
plt.xlabel("frequency (Hz)")
plt.ylabel("psd (arb.u./SQRT(Hz))")
#plt.axvline(13, ls="dashed", color="g")
plt.axhline(rho, ls="dashed", color="r")
plt.show()

Given a radius length r and an angle t in radians and a circle's center (h,k), you can calculate the coordinates of a point on the circumference as follows (this is pseudo-code, you'll have to adapt it to your language):

float x = r*cos(t) + h;
float y = r*sin(t) + k;

Chrome currently supports only a small subset of ActiveX components entirely on purpose, and it's never going to support them all, and especially lots of random 3rd party propriety ones.

Why?

Because ActiveX is a mess - it's a huge security hole and all the components can run at a higher security level than the browser.

That means that if you let in an ActiveX component it owns your PC - and while many are not malign most are resource hogs. Also if a malign site can't hack your browser it might still be able to hack one of its ActiveXs.

This is completely against Chrome's sandbox everything and wall off every tab approach - the reason why Chrome is by far the quickest, most secure and most stable browser is the same reason that it currently only supports Flash, Silverlight and one or two more.

However, it sounds like you're not really developing a web application anyway - your site in IE is basically a portal to downloading further ActiveX-based applications. Why worry about supporting anything that your DVR clients with their coding teams writing ActiveXs don't?

This should work for you:

Consider Table1 has a column by the name of activity which may have the same value in more than one record. This is how you will extract ONLY the unique entries of activity field within Table1.

#An array of multiple data entries
@table1 = Table1.find(:all) 

#extracts **activity** for each entry in the array @table1, and returns only the ones which are unique 

@unique_activities = @table1.map{|t| t.activity}.uniq 

When webview is embedded in some custom view such that user almost believes that he is seeing a native view and not a webview, in such scenario showing the "page could not be loaded" error is preposterous. What I usually do in such situation is I load blank page and show a toast message as below

webView.setWebViewClient(new WebViewClient() {

            @Override
            public void onReceivedError(WebView view, int errorCode,
                    String description, String failingUrl) {
                Log.e(TAG," Error occured while loading the web page at Url"+ failingUrl+"." +description);     
                view.loadUrl("about:blank");
                Toast.makeText(App.getContext(), "Error occured, please check newtwork connectivity", Toast.LENGTH_SHORT).show();
                super.onReceivedError(view, errorCode, description, failingUrl);
            }
        });

You can also get it by

string(//bookstore/book[1]/title/@lang)    
string(//bookstore/book[2]/title/@lang)

although if you are using XMLDOM with JavaScript you can code something like

var n1 = uXmlDoc.selectSingleNode("//bookstore/book[1]/title/@lang");

and n1.text will give you the value "eng"

I think the solution is just as simple as this:

Card temp = deck[cardAindex];
deck[cardAIndex]=deck[cardBIndex]; 
deck[cardBIndex]=temp;

I encountered the same problem with Android devices but not iOS devices. Managed to resolve by specifying position:relative in the outer div of the absolutely positioned elements (with overflow:hidden for outer div)

Using Hibernate :

@Transactional(readOnly=true)
public void accessUser() {
    EntityManager em = repo.getEntityManager();
    org.hibernate.Session session = em.unwrap(org.hibernate.Session.class);
    org.hibernate.SQLQuery q = (org.hibernate.SQLQuery) session.createSQLQuery("SELECT u.username, u.name, u.email, 'blabla' as passe, login_type as loginType FROM users u")
        .addScalar("username", StringType.INSTANCE).addScalar("name", StringType.INSTANCE)
        .addScalar("email", StringType.INSTANCE).addScalar("passe", StringType.INSTANCE)
        .addScalar("loginType", IntegerType.INSTANCE)
        .setResultTransformer(Transformers.aliasToBean(User2DTO.class));

    List<User2DTO> userList = q.list();
}

If you think map() as an iteration(one level for loop), flatmap() is a two-level iteration(like a nested for loop). (Enter each iterated element foo, and do foo.getBarList() and iterate in that barList again)

map(): take a stream, do something to every element, collect the single result of every process, output another stream. The definition of "do something function" is implicit. If the processment of any element results in null, null is used to compose the final stream. So, the number of elements in the resulting stream will be equal to number of input stream.

flatmap(): take a stream of elements/streams and a function(explicit definition), apply the function to each element of each stream, and collect all the intermediate resulting stream to be a greater stream("flattening"). If the processment of any element results in null, empty stream is provided to the final step of "flattening". The number of elements in the resulting stream, is the total of all participating elements in all inputs, if the input is several streams.

This is the simplest way to do it.

let total = parseInt(('100,000.00'.replace(',',''))) + parseInt(('500,000.00'.replace(',','')))

You can use a data trigger (with a view model) on the button to enable a wait cursor.

<Button x:Name="NextButton"
        Content="Go"
        Command="{Binding GoCommand }">
    <Button.Style>
         <Style TargetType="{x:Type Button}">
             <Setter Property="Cursor" Value="Arrow"/>
             <Style.Triggers>
                 <DataTrigger Binding="{Binding Path=IsWorking}" Value="True">
                     <Setter Property="Cursor" Value="Wait"/>
                 </DataTrigger>
             </Style.Triggers>
         </Style>
    </Button.Style>
</Button>

Here is the code from the view-model:

public class MainViewModel : ViewModelBase
{
   // most code removed for this example

   public MainViewModel()
   {
      GoCommand = new DelegateCommand<object>(OnGoCommand, CanGoCommand);
   }

   // flag used by data binding trigger
   private bool _isWorking = false;
   public bool IsWorking
   {
      get { return _isWorking; }
      set
      {
         _isWorking = value;
         OnPropertyChanged("IsWorking");
      }
   }

   // button click event gets processed here
   public ICommand GoCommand { get; private set; }
   private void OnGoCommand(object obj)
   {
      if ( _selectedCustomer != null )
      {
         // wait cursor ON
         IsWorking = true;
         _ds = OrdersManager.LoadToDataSet(_selectedCustomer.ID);
         OnPropertyChanged("GridData");

         // wait cursor off
         IsWorking = false;
      }
   }
}

Or you could try:

propertyInfo.SetValue(ship, Convert.ChangeType(value, propertyInfo.PropertyType), null);

//But this will cause problems if your string value IsNullOrEmplty...

The functions need to be defined before being used. There is no mechanism is sh to pre-declare functions, but a common technique is to do something like:

main() {
  case "$choice" in
    true)  process_install;;
    false) process_exit;;
  esac
}

process_install()
{
  commands...
  commands...
}

process_exit()
{
  commands...
  commands...
}

main()

Try:

String str = "my string \n my other string";

When printed you will get:

my string
my other string

Using d-flex class works well but some other attributes don't work anymore like vertical-align: middle property.

The best way I found to size columns very easily is to use the width attribute with percentage only in thead cells.

<table class="table">
    <thead>
        <tr>
            <th width="25%">25%</th>
            <th width="25%">25%</th>
            <th width="50%">50%</th>
        </tr>
    </thead>
    <tbody>
        <tr>
            <td>25%</td>
            <td>25%</td>
            <td>50%</td>
        </tr>
    </tbody>
</table>

I find exporting the packages in string format only is more portable than exporting the whole conda environment. As the previous answer already suggested:

$ conda list -e > requirements.txt

However, this requirements.txt contains build numbers which are not portable between operating systems, e.g. between Mac and Ubuntu. In conda env export we have the option --no-builds but not with conda list -e, so we can remove the build number by issuing the following command:

$ sed -i -E "s/^(.*\=.*)(\=.*)/\1/" requirements.txt 

And recreate the environment on another computer:

conda create -n recreated_env --file requirements.txt 

The error means that you tried to enter a literal with a format string, but the length of the format string was not the same length as the literal.

One of these formats is incorrect:

TO_CHAR(t.alarm_datetime, 'YYYY-MM-DD HH24:MI:SS')
TO_DATE(alarm_datetime, 'DD.MM.YYYY HH24:MI:SS')

OO Abstraction occurs during class level design, with the objective of hiding the implementation complexity of how the the features offered by an API / design / system were implemented, in a sense simplifying the 'interface' to access the underlying implementation.

The process of abstraction can be repeated at increasingly 'higher' levels (layers) of classes, which enables large systems to be built without increasing the complexity of code and understanding at each layer.

For example, a Java developer can make use of the high level features of FileInputStream without concern for how it works (i.e. file handles, file system security checks, memory allocation and buffering will be managed internally, and are hidden from consumers). This allows the implementation of FileInputStream to be changed, and as long as the API (interface) to FileInputStream remains consistent, code built against previous versions will still work.

Similarly, when designing your own classes, you will want to hide internal implementation details from others as far as possible.

In the Booch definition¹, OO Encapsulation is achieved through Information Hiding, and specifically around hiding internal data (fields / members representing the state) owned by a class instance, by enforcing access to the internal data in a controlled manner, and preventing direct, external change to these fields, as well as hiding any internal implementation methods of the class (e.g. by making them private).

For example, the fields of a class can be made private by default, and only if external access to these was required, would a get() and/or set() (or Property) be exposed from the class. (In modern day OO languages, fields can be marked as readonly / final / immutable which further restricts change, even within the class).

Example where NO information hiding has been applied (Bad Practice):

class Foo {
   // BAD - NOT Encapsulated - code external to the class can change this field directly
   // Class Foo has no control over the range of values which could be set.
   public int notEncapsulated;
}

Example where field encapsulation has been applied:

class Bar {
   // Improvement - access restricted only to this class
   private int encapsulatedPercentageField;

   // The state of Bar (and its fields) can now be changed in a controlled manner
   public void setEncapsulatedField(int percentageValue) {
      if (percentageValue >= 0 && percentageValue <= 100) {
          encapsulatedPercentageField = percentageValue;
      }
      // else throw ... out of range
   }
}

Example of immutable / constructor-only initialization of a field:

class Baz {
   private final int immutableField;

   public void Baz(int onlyValue) {
      // ... As above, can also check that onlyValue is valid
      immutableField = onlyValue;
   }
   // Further change of `immutableField` outside of the constructor is NOT permitted, even within the same class 
}

Re : Abstraction vs Abstract Class

Abstract classes are classes which promote reuse of commonality between classes, but which themselves cannot directly be instantiated with new() - abstract classes must be subclassed, and only concrete (non abstract) subclasses may be instantiated. Possibly one source of confusion between Abstraction and an abstract class was that in the early days of OO, inheritance was more heavily used to achieve code reuse (e.g. with associated abstract base classes). Nowadays, composition is generally favoured over inheritance, and there are more tools available to achieve abstraction, such as through Interfaces, events / delegates / functions, traits / mixins etc.

Re : Encapsulation vs Information Hiding

The meaning of encapsulation appears to have evolved over time, and in recent times, encapsulation can commonly also used in a more general sense when determining which methods, fields, properties, events etc to bundle into a class.

Quoting Wikipedia:

In the more concrete setting of an object-oriented programming language, the notion is used to mean either an information hiding mechanism, a bundling mechanism, or the combination of the two.

For example, in the statement

I've encapsulated the data access code into its own class

.. the interpretation of encapsulation is roughly equivalent to the Separation of Concerns or the Single Responsibility Principal (the "S" in SOLID), and could arguably be used as a synonym for refactoring.

^{[1] _{Once you've seen Booch's encapsulation cat picture you'll never be able to forget encapsulation - p46 of Object Oriented Analysis and Design with Applications, 2nd Ed}}

This sounds to me like what you have is one command with 2 outputs, I would opt for making the change in both client and server for this.

At the client, use JS to build up the URL you want to post to (use JQuery for simplicity) i.e.

<script type="text/javascript">
    $(function() {
        // this code detects a button click and sets an `option` attribute
        // in the form to be the `name` attribute of whichever button was clicked
        $('form input[type=submit]').click(function() {
            var $form = $('form');
            form.removeAttr('option');
            form.attr('option', $(this).attr('name'));
        });
        // this code updates the URL before the form is submitted
        $("form").submit(function(e) { 
            var option = $(this).attr("option");
            if (option) {
                e.preventDefault();
                var currentUrl = $(this).attr("action");
                $(this).attr('action', currentUrl + "/" + option).submit();     
            }
        });
    });
</script>
...
<input type="submit" ... />
<input type="submit" name="excel" ... />

Now at the server side we can add a new route to handle the excel request

routes.MapRoute(
    name: "ExcelExport",
    url: "SearchDisplay/Submit/excel",
    defaults: new
    {
        controller = "SearchDisplay",
        action = "SubmitExcel",
    });

You can setup 2 distinct actions

public ActionResult SubmitExcel(SearchCostPage model)
{
   ...
}

public ActionResult Submit(SearchCostPage model)
{
   ...
}

Or you can use the ActionName attribute as an alias

public ActionResult Submit(SearchCostPage model)
{
   ...
}

[ActionName("SubmitExcel")]
public ActionResult Submit(SearchCostPage model)
{
   ...
}

Not an expert in regex, but you can do ^((part1|part2)|(part1, part2))$. In words: "part 1 or part2 or both"

1. Installing OpenCV 2.4.3

First, get OpenCV 2.4.3 from sourceforge.net. Its a self-extracting so just double click to start the installation. Install it in a directory, say C:\.

Wait until all files get extracted. It will create a new directory C:\opencv which contains OpenCV header files, libraries, code samples, etc.

Now you need to add the directory C:\opencv\build\x86\vc10\bin to your system PATH. This directory contains OpenCV DLLs required for running your code.

Open Control Panel → System → Advanced system settings → Advanced Tab → Environment variables...

On the System Variables section, select Path (1), Edit (2), and type C:\opencv\build\x86\vc10\bin; (3), then click Ok.

On some computers, you may need to restart your computer for the system to recognize the environment path variables.

This will completes the OpenCV 2.4.3 installation on your computer.

2. Create a new project and set up Visual C++

Open Visual C++ and select File → New → Project... → Visual C++ → Empty Project. Give a name for your project (e.g: cvtest) and set the project location (e.g: c:\projects).

Click Ok. Visual C++ will create an empty project.

Make sure that "Debug" is selected in the solution configuration combobox. Right-click cvtest and select Properties → VC++ Directories.

Select Include Directories to add a new entry and type C:\opencv\build\include.

Click Ok to close the dialog.

Back to the Property dialog, select Library Directories to add a new entry and type C:\opencv\build\x86\vc10\lib.

Click Ok to close the dialog.

Back to the property dialog, select Linker → Input → Additional Dependencies to add new entries. On the popup dialog, type the files below:

opencv_calib3d243d.lib
opencv_contrib243d.lib
opencv_core243d.lib
opencv_features2d243d.lib
opencv_flann243d.lib
opencv_gpu243d.lib
opencv_haartraining_engined.lib
opencv_highgui243d.lib
opencv_imgproc243d.lib
opencv_legacy243d.lib
opencv_ml243d.lib
opencv_nonfree243d.lib
opencv_objdetect243d.lib
opencv_photo243d.lib
opencv_stitching243d.lib
opencv_ts243d.lib
opencv_video243d.lib
opencv_videostab243d.lib

Note that the filenames end with "d" (for "debug"). Also note that if you have installed another version of OpenCV (say 2.4.9) these filenames will end with 249d instead of 243d (opencv_core249d.lib..etc).

Click Ok to close the dialog. Click Ok on the project properties dialog to save all settings.

NOTE:

These steps will configure Visual C++ for the "Debug" solution. For "Release" solution (optional), you need to repeat adding the OpenCV directories and in Additional Dependencies section, use:

opencv_core243.lib
opencv_imgproc243.lib
...

instead of:

opencv_core243d.lib
opencv_imgproc243d.lib
...

You've done setting up Visual C++, now is the time to write the real code. Right click your project and select Add → New Item... → Visual C++ → C++ File.

Name your file (e.g: loadimg.cpp) and click Ok. Type the code below in the editor:

#include <opencv2/highgui/highgui.hpp>
#include <iostream>

using namespace cv;
using namespace std;

int main()
{
    Mat im = imread("c:/full/path/to/lena.jpg");
    if (im.empty()) 
    {
        cout << "Cannot load image!" << endl;
        return -1;
    }
    imshow("Image", im);
    waitKey(0);
}

The code above will load c:\full\path\to\lena.jpg and display the image. You can use any image you like, just make sure the path to the image is correct.

Type F5 to compile the code, and it will display the image in a nice window.

And that is your first OpenCV program!

3. Where to go from here?

Now that your OpenCV environment is ready, what's next?

1. Go to the samples dir → c:\opencv\samples\cpp.
2. Read and compile some code.
3. Write your own code.

const FindDate = (date, allDate) => {
        
    // moment().diff only works on moment(). Make sure both date and elements in allDate array are in moment format
    let nearestDate = -1; 
    
    allDate.some(d => {
        const currentDate = moment(d)
        const difference = currentDate.diff(d); // Or d.diff(date) depending on what you're trying to find
        if(difference >= 0){
            nearestDate = d
        }
    });
    
    console.log(nearestDate)
}

PuTTY can't find where your X server is, because you didn't tell it. (ssh on Linux doesn't have this problem because it runs under X so it just uses that one.) Fill in the blank box after "X display location" with your Xming server's address.

Alternatively, try MobaXterm. It has an X server builtin.

Add a file .jslintrc (or .jshintrc in the case of jshint) at the root of your project with the following content:

{
    "node": true
}

Using PostgreSQL 9.6.x with official Java driver 42.2.4:

...myPreparedStatement.execute...
myPreparedStatement.toString()

Will show the SQL with the ? already replaced, which is what I was looking for. Just added this answer to cover the postgres case.

I would never have thought it could be so simple.

I had .apps.googleusercontent.com twice in my ID.

It was a copy and paste issue "Your ID HERE".apps.googleusercontent.com

$query = "ALTER TABLE `" . $table_prefix . "posts_to_bookmark` 
          ADD COLUMN `ping_status` INT(1) NOT NULL 
          AFTER `<TABLE COLUMN BEFORE THIS COLUMN>`";

I believe you need to have ADD COLUMN and use AFTER, not BEFORE.

In case you want to place column at the beginning of a table, use the FIRST statement:

$query = "ALTER TABLE `" . $table_prefix . "posts_to_bookmark`
          ADD COLUMN `ping_status` INT(1) NOT NULL 
          FIRST";

http://dev.mysql.com/doc/refman/5.1/en/alter-table.html

I would create a user control which holds a Label and a Text Box in it and simply create instances of that user control 'n' times. If you want to know a better way to do it and use properties to get access to the values of Label and Text Box from the user control, please let me know.

Simple way to do it would be:

int n = 4; // Or whatever value - n has to be global so that the event handler can access it

private void btnDisplay_Click(object sender, EventArgs e)
{
    TextBox[] textBoxes = new TextBox[n];
    Label[] labels = new Label[n];

    for (int i = 0; i < n; i++)
    {
        textBoxes[i] = new TextBox();
        // Here you can modify the value of the textbox which is at textBoxes[i]

        labels[i] = new Label();
        // Here you can modify the value of the label which is at labels[i]
    }

    // This adds the controls to the form (you will need to specify thier co-ordinates etc. first)
    for (int i = 0; i < n; i++)
    {
        this.Controls.Add(textBoxes[i]);
        this.Controls.Add(labels[i]);
    }
}

The code above assumes that you have a button btnDisplay and it has a onClick event assigned to btnDisplay_Click event handler. You also need to know the value of n and need a way of figuring out where to place all controls. Controls should have a width and height specified as well.

To do it using a User Control simply do this.

Okay, first of all go and create a new user control and put a text box and label in it.

Lets say they are called txtSomeTextBox and lblSomeLabel. In the code behind add this code:

public string GetTextBoxValue() 
{ 
    return this.txtSomeTextBox.Text; 
} 

public string GetLabelValue() 
{ 
    return this.lblSomeLabel.Text; 
} 

public void SetTextBoxValue(string newText) 
{ 
    this.txtSomeTextBox.Text = newText; 
} 

public void SetLabelValue(string newText) 
{ 
    this.lblSomeLabel.Text = newText; 
}

Now the code to generate the user control will look like this (MyUserControl is the name you have give to your user control):

private void btnDisplay_Click(object sender, EventArgs e)
{
    MyUserControl[] controls = new MyUserControl[n];

    for (int i = 0; i < n; i++)
    {
        controls[i] = new MyUserControl();

        controls[i].setTextBoxValue("some value to display in text");
        controls[i].setLabelValue("some value to display in label");
        // Now if you write controls[i].getTextBoxValue() it will return "some value to display in text" and controls[i].getLabelValue() will return "some value to display in label". These value will also be displayed in the user control.
    }

    // This adds the controls to the form (you will need to specify thier co-ordinates etc. first)
    for (int i = 0; i < n; i++)
    {
        this.Controls.Add(controls[i]);
    }
}

Of course you can create more methods in the usercontrol to access properties and set them. Or simply if you have to access a lot, just put in these two variables and you can access the textbox and label directly:

public TextBox myTextBox;
public Label myLabel;

In the constructor of the user control do this:

myTextBox = this.txtSomeTextBox;
myLabel = this.lblSomeLabel;

Then in your program if you want to modify the text value of either just do this.

control[i].myTextBox.Text = "some random text"; // Same applies to myLabel

Hope it helped :)

Another approach is to use the first_value window function: http://sqlfiddle.com/#!12/7a145/14

SELECT DISTINCT
  first_value("id") OVER (PARTITION BY "category" ORDER BY "date" DESC) 
FROM Table1
ORDER BY 1;

... though I suspect hims056's suggestion will typically perform better where appropriate indexes are present.

A third solution is:

SELECT
  id
FROM (
  SELECT
    id,
    row_number() OVER (PARTITION BY "category" ORDER BY "date" DESC) AS rownum
  FROM Table1
) x
WHERE rownum = 1;

Here is my solution:

chrome.runtime.onMessage.addListener(function(request, sender) {
        if (request.action == "getSource") {
            this.pageSource = request.source;
            var title = this.pageSource.match(/<title[^>]*>([^<]+)<\/title>/)[1];
            alert(title)
        }
    });

    chrome.tabs.query({ active: true, currentWindow: true }, tabs => {
        chrome.tabs.executeScript(
            tabs[0].id,
            { code: 'var s = document.documentElement.outerHTML; chrome.runtime.sendMessage({action: "getSource", source: s});' }
        );
    });

Here's another way to accomplish the equivalent of Write-Output. Just put your string in quotes:

"count=$count"

You can make sure this works the same as Write-Output by running this experiment:

"blah blah" > out.txt

Write-Output "blah blah" > out.txt

Write-Host "blah blah" > out.txt

The first two will output "blah blah" to out.txt, but the third one won't.

"help Write-Output" gives a hint of this behavior:

This cmdlet is typically used in scripts to display strings and other objects on the console. However, because the default behavior is to display the objects at the end of a pipeline, it is generally not necessary to use the cmdlet.

In this case, the string itself "count=$count" is the object at the end of a pipeline, and is displayed.

If it helps you can embed a tab character in a double quoted string:

PS> "`t hello"

Some of these answers are pretty old, so maybe it's changed in recent times, but I had similar issues and I solved it by:

1. Loading the USB drivers for the device - Samsung S6
2. Enable Developer tools on the phone.
3. On the device, go to Settings - Applications - Development - Check USB Debugging
4. Reboot O/S (Windows 7 - 64bit)
5. Open Visual Studio

I think it was step 3 that had me stumped for a while. I'd enabled developer tools, but I didn't specifically enable the "USB Debugging" but.

Similar to @Matthew_Plourde using gsub

However, using a pattern that will trim to zero characters i.e. return "" if the original string is shorter than the number of characters to cut:

cs <- c("foo_bar","bar_foo","apple","beer","so","a")
gsub('.{0,3}$', '', cs)
# [1] "foo_" "bar_" "ap"   "b"    ""    ""

Difference is, {0,3} quantifier indicates 0 to 3 matches, whereas {3} requires exactly 3 matches otherwise no match is found in which case gsub returns the original, unmodified string.

N.B. using {,3} would be equivalent to {0,3}, I simply prefer the latter notation.

See here for more information on regex quantifiers: https://www.regular-expressions.info/refrepeat.html

In *nix In CentOS/RedHat

vim /etc/sysconfig/jenkins

# Port Jenkins is listening on.
# Set to -1 to disable
#
JENKINS_PORT="8080"

In windows open XML file C:\Program Files (x86)\Jenkins\jenkins.xml

<executable>%BASE%\jre\bin\java</executable>
  <arguments>-Xrs -Xmx256m -Dhudson.lifecycle=hudson.lifecycle.WindowsServiceLifecycle -jar "%BASE%\jenkins.war" --**httpPort=8083**</arguments>
 i made  above bold  to show you change then 
 <executable>%BASE%\jre\bin\java</executable>
  <arguments>-Xrs -Xmx256m -Dhudson.lifecycle=hudson.lifecycle.WindowsServiceLifecycle -jar "%BASE%\jenkins.war" --httpPort=8083</arguments>

now you have to restart it doesnot work unless you restart http://localhost:8080/restart then after restart http://localhost:8083/ all should be well so looks like the all above response which says it does not work We have restart.

Try This one.

function containsSpecialCharacters(str){_x000D_
    var regex = /[ !@#$%^&*()_+\-=\[\]{};':"\\|,.<>\/?]/g;_x000D_
 return regex.test(str);_x000D_
}

$('form#register input[required]')

It will only return inputs which have required attribute.

@Alistair pointed out in this answer that sometimes users will return to the browser after opening the app. A commenter to that answer indicated that the times values used had to be changed depending on iOS version. When our team had to deal with this, we found that the time values for the initial timeout and telling whether we had returned to the browser had to be tuned, and often didn't work for all users and devices.

Rather than using an arbitrary time difference threshold to determine whether we had returned to the browser, it made sense to detect the "pagehide" and "pageshow" events.

I developed the following web page to help diagnose what was going on. It adds HTML diagnostics as the events unfold, mainly because using techniques like console logging, alerts, or Web Inspector, jsfiddle.net etc all had their drawbacks in this work flow. Rather than using a time threshold, the Javascript counts the number of "pagehide" and "pageshow" events to see whether they have occurred. And I found that the most robust strategy was to use an initial timeout of 1000 (rather than the 25, 50, or 100 reported/suggested by others).

This can be served on a local server, e.g. python -m SimpleHTTPServer and viewed on iOS Safari.

To play with it, press either the "Open an installed app" or "App not installed" links. These links should cause respectively the Maps app or the App Store to open. You can then return to Safari to see the sequence and timing of the events.

(Note: this will work for Safari only. For other browsers (like Chrome) you'd have to install handlers for the pagehide/show-equivalent events).

Update: As @Mikko has pointed out in the comments, the pageshow/pagehide events we are using are apparently no longer supported in iOS8.

<html>
<head>
</head>
<body>
<a href="maps://" onclick="clickHandler()">Open an installed app</a>
<br/><br/>
<a href="xmapsx://" onclick="clickHandler()">App not installed</a>
<br/>

<script>

var hideShowCount = 0 ;
window.addEventListener("pagehide", function() {
    hideShowCount++ ;
    showEventTime('pagehide') ;
});

window.addEventListener("pageshow", function() {
    hideShowCount++ ;
    showEventTime('pageshow') ;
});

function clickHandler(){
    var hideShowCountAtClick = hideShowCount ;
    showEventTime('click') ;
    setTimeout(function () {
               showEventTime('timeout function '+(hideShowCount-hideShowCountAtClick)+' hide/show events') ;
               if (hideShowCount == hideShowCountAtClick){
                    // app is not installed, go to App Store
                    window.location = 'http://itunes.apple.com/app' ;
               }
            }, 1000);
}

function currentTime()
{
    return Date.now()/1000 ;
}

function showEventTime(event){
    var time = currentTime() ;
    document.body.appendChild(document.createElement('br'));
    document.body.appendChild(document.createTextNode(time+' '+event));
}
</script>
</body>
</html>

Use list.sort instead:

list.sort((o1, o2) -> o1.getItem().getValue().compareTo(o2.getItem().getValue()));

and make it more succinct using Comparator.comparing:

list.sort(Comparator.comparing(o -> o.getItem().getValue()));

After either of these, list itself will be sorted.

Your issue is that list.stream.sorted returns the sorted data, it doesn't sort in place as you're expecting.

>>> int("0xff", 16)
255

or

>>> int("FFFF", 16)
65535

Read the docs.

In the latest version of JAVA this is how you do it:

nir.length //is the first dimension
nir[0].length //is the second dimension

Try:

$(document).ready(function() {
    $("a").click(function(event) {
       alert(event.target.id+" and "+$(event.target).attr('class'));
    });
});

I had a similar issue with Datagrip and none of these solutions worked.

Once I restarted the Datagrip Client it was no longer an issue and I could drop tables again.

1. Fist change the package name in the manifest file
2. Re-factor > Rename the name of the package in src folder and put a tick for rename subpackages
3. That is all you are done.

Use a second class that has only the hover assigned:

HTML

 <a class="myclass myclass_hover" href="#">My anchor</a>

CSS

 .myclass { 
   /* all anchor styles */
 }
 .myclass_hover:hover {
   /* example color */
   color:#00A;
 }

Now you can use Jquery to remove the class, for instance if the element has been clicked:

JQUERY

 $('.myclass').click( function(e) {
    e.preventDefault();
    $(this).removeClass('myclass_hover');
 });

Hope this answer is helpful.

Here is another REST-only working example for Google Service Accounts accessing G Suite Users and Groups, authenticating through JWT. This was only possible through reflection of Google libraries, since Google documentation of these APIs are beyond terrible. Anyone used to code in MS technologies will have a hard time figuring out how everything goes together in Google services.

$iss = "<name>@<serviceaccount>.iam.gserviceaccount.com"; # The email address of the service account.
$sub = "[email protected]"; # The user to impersonate (required).
$scope = "https://www.googleapis.com/auth/admin.directory.user.readonly https://www.googleapis.com/auth/admin.directory.group.readonly";
$certPath = "D:\temp\mycertificate.p12";
$grantType = "urn:ietf:params:oauth:grant-type:jwt-bearer";

# Auxiliary functions
function UrlSafeEncode([String] $Data) {
    return $Data.Replace("=", [String]::Empty).Replace("+", "-").Replace("/", "_");
}

function UrlSafeBase64Encode ([String] $Data) {
    return (UrlSafeEncode -Data ([Convert]::ToBase64String([System.Text.Encoding]::UTF8.GetBytes($Data))));
}

function KeyFromCertificate([System.Security.Cryptography.X509Certificates.X509Certificate2] $Certificate) {
    $privateKeyBlob = $Certificate.PrivateKey.ExportCspBlob($true);
    $key = New-Object System.Security.Cryptography.RSACryptoServiceProvider;
    $key.ImportCspBlob($privateKeyBlob);
    return $key;
}

function CreateSignature ([Byte[]] $Data, [System.Security.Cryptography.X509Certificates.X509Certificate2] $Certificate) {
    $sha256 = [System.Security.Cryptography.SHA256]::Create();
    $key = (KeyFromCertificate $Certificate);
    $assertionHash = $sha256.ComputeHash($Data);
    $sig = [Convert]::ToBase64String($key.SignHash($assertionHash, "2.16.840.1.101.3.4.2.1"));
    $sha256.Dispose();
    return $sig;
}

function CreateAssertionFromPayload ([String] $Payload, [System.Security.Cryptography.X509Certificates.X509Certificate2] $Certificate) {
    $header = @"
{"alg":"RS256","typ":"JWT"}
"@;
    $assertion = New-Object System.Text.StringBuilder;

    $assertion.Append((UrlSafeBase64Encode $header)).Append(".").Append((UrlSafeBase64Encode $Payload)) | Out-Null;
    $signature = (CreateSignature -Data ([System.Text.Encoding]::ASCII.GetBytes($assertion.ToString())) -Certificate $Certificate);
    $assertion.Append(".").Append((UrlSafeEncode $signature)) | Out-Null;
    return $assertion.ToString();
}

$baseDateTime = New-Object DateTime(1970, 1, 1, 0, 0, 0, [DateTimeKind]::Utc);
$timeInSeconds = [Math]::Truncate([DateTime]::UtcNow.Subtract($baseDateTime).TotalSeconds);

$jwtClaimSet = @"
{"scope":"$scope","email_verified":false,"iss":"$iss","sub":"$sub","aud":"https://oauth2.googleapis.com/token","exp":$($timeInSeconds + 3600),"iat":$timeInSeconds}
"@;


$cert = New-Object System.Security.Cryptography.X509Certificates.X509Certificate2($certPath, "notasecret", [System.Security.Cryptography.X509Certificates.X509KeyStorageFlags]::Exportable);
$jwt = CreateAssertionFromPayload -Payload $jwtClaimSet -Certificate $cert;


# Retrieve the authorization token.
$authRes = Invoke-WebRequest -Uri "https://oauth2.googleapis.com/token" -Method Post -ContentType "application/x-www-form-urlencoded" -UseBasicParsing -Body @"
assertion=$jwt&grant_type=$([Uri]::EscapeDataString($grantType))
"@;
$authInfo = ConvertFrom-Json -InputObject $authRes.Content;

$resUsers = Invoke-WebRequest -Uri "https://www.googleapis.com/admin/directory/v1/users?domain=<required_domain_name_dont_trust_google_documentation_on_this>" -Method Get -Headers @{
    "Authorization" = "$($authInfo.token_type) $($authInfo.access_token)"
}

$users = ConvertFrom-Json -InputObject $resUsers.Content;

$users.users | ft primaryEmail, isAdmin, suspended;

You can use a RegularExpression validator. The ValidationExpression property has a button you can press in Visual Studio's property's panel that gets lists a lot of useful expressions. The one they use for email addresses is:

\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*

You do not specify why you think it is wrong but I can se two dangers:

BETWEEN can be implemented differently in different databases sometimes it is including the border values and sometimes excluding, resulting in that 1 and 31 of january would end up NOTHING. You should test how you database does this.

Also, if RATE_DATE contains hours also 2010-01-31 might be translated to 2010-01-31 00:00 which also would exclude any row with an hour other that 00:00.

The method you are looking for is not specific to Android, but to Java in general. You're looking for the MessageDigest (import java.security.MessageDigest).

An implementation of a sha512(String s) method can be seen here, and the change for a SHA-1 hash would be changing line 71 to:

MessageDigest md = MessageDigest.getInstance("SHA-1");

Use the hashchange event:

window.addEventListener("hashchange", function(e) {
  // ...
})

If you need to support older browsers, check out the hashChange Event section in Modernizr's HTML5 Cross Browser Polyfills wiki page.

The code you have posted here and code on your site both are different. There is a break <br> after second image, so the third image into new line, remove this <br> and it will display correctly.

remember that the use of "live" is for "jQuery 1.3" or higher

in version "jQuery 1.4.3" or higher is used "delegate"

and version "jQuery 1.7 +" or higher is used "on"

$( selector ).live( events, data, handler ); // jQuery 1.3+
$( document ).delegate( selector, events, data, handler ); // jQuery 1.4.3+
$( document ).on( events, selector, data, handler ); // jQuery 1.7+

As of jQuery 1.7, the .live() method is deprecated.

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

Regards, Fernando

This is how I make forms full screen.

private void button1_Click(object sender, EventArgs e)
{
    int minx, miny, maxx, maxy;
    inx = miny = int.MaxValue;
    maxx = maxy = int.MinValue;

    foreach (Screen screen in Screen.AllScreens)
    {
        var bounds = screen.Bounds;
        minx = Math.Min(minx, bounds.X);
        miny = Math.Min(miny, bounds.Y);
        maxx = Math.Max(maxx, bounds.Right);
        maxy = Math.Max(maxy, bounds.Bottom);
    }

    Form3 fs = new Form3();
    fs.Activate();
    Rectangle tempRect = new Rectangle(1, 0, maxx, maxy);
    this.DesktopBounds = tempRect;
}

Just loop through all the <strong> tags and use next_sibling to get what you want. Like this:

for strong_tag in soup.find_all('strong'):
    print(strong_tag.text, strong_tag.next_sibling)

Demo:

from bs4 import BeautifulSoup

html = '''
<p>
  <strong class="offender">YOB:</strong> 1987<br />
  <strong class="offender">RACE:</strong> WHITE<br />
  <strong class="offender">GENDER:</strong> FEMALE<br />
  <strong class="offender">HEIGHT:</strong> 5'05''<br />
  <strong class="offender">WEIGHT:</strong> 118<br />
  <strong class="offender">EYE COLOR:</strong> GREEN<br />
  <strong class="offender">HAIR COLOR:</strong> BROWN<br />
</p>
'''

soup = BeautifulSoup(html)

for strong_tag in soup.find_all('strong'):
    print(strong_tag.text, strong_tag.next_sibling)

This gives you:

YOB:  1987
RACE:  WHITE
GENDER:  FEMALE
HEIGHT:  5'05''
WEIGHT:  118
EYE COLOR:  GREEN
HAIR COLOR:  BROWN

npm has an official page about fixing npm permissions when you get the EACCES (Error: Access) error. The page even has a video.

You can fix this problem using one of two options:

1. Change the permission to npm's default directory.
2. Change npm's default directory to another directory.

They are stored in the CGI fieldstorage object.

import cgi
form = cgi.FieldStorage()

print "The user entered %s" % form.getvalue("uservalue")

NOTE: This advice is now out-dated as per comment since Git 1.6.1. Git used to behave this way, and no longer does.

Git by default attempts to store symlinks instead of following them (for compactness, and it's generally what people want).

However, I accidentally managed to get it to add files beyond the symlink when the symlink is a directory.

I.e.:

  /foo/
  /foo/baz
  /bar/foo --> /foo
  /bar/foo/baz

by doing

 git add /bar/foo/baz

it appeared to work when I tried it. That behavior was however unwanted by me at the time, so I can't give you information beyond that.

You can force the cell to commit the value as soon as you click the checkbox and then catch the CellValueChanged event. The CurrentCellDirtyStateChanged fires as soon as you click the checkbox.

The following code works for me:

private void grid_CurrentCellDirtyStateChanged(object sender, EventArgs e)
    {
        SendKeys.Send("{tab}");
    }

You can then insert your code in the CellValueChanged event.

Take this as a sample code. Replace imageheight and image width with your image dimensions.

<div style="background:yourimage.jpg no-repeat;height:imageheight px;width:imagewidth px">
</div>

There's 3 satellites at least that you must be able to receive from of the 24-32 out there, and they each broadcast a time from a synchronized atomic clock. The differences in those times that you receive at any one time tell you how long the broadcast took to reach you, and thus where you are in relation to the satellites. So, it sort of reads from something, but it doesn't connect to that thing. Note that this doesn't tell you your orientation, many GPSes fake that (and speed) by interpolating data points.

If you don't count the cost of the receiver, it's a free service. Apparently there's higher resolution services out there that are restricted to military use. Those are likely a fixed cost for a license to decrypt the signals along with a confidentiality agreement.

Now your device may support GPS tracking, in which case it might communicate, say via GPRS, to a database which will store the location the device has found itself to be at, so that multiple devices may be tracked. That would require some kind of connection.

Maps are either stored on the device or received over a connection. Navigation is computed based on those maps' databases. These likely are a licensed item with a cost associated, though if you use a service like Google Maps they have the license with NAVTEQ and others.

Is it legal? Yes, changing your location on Android is legal. Likewise, you can change VPN settings in Microsoft Edge on your PC, and all this is within the law. VPN allows you to change your IP address, safeguarding your privacy and protecting your actual location from being exposed. However, VPN laws may vary from country to country. There are restrictions in some regions.

Brief summary: Yes, you can change your region on Android and a VPN is a necessary assistant for this. It's simple, safe and legal. Today, VPN is the best way to change the region and unblock sites with regional restrictions.

For easy fix follow these steps:

1. goto: https://docs.microsoft.com/en-us/sql/connect/jdbc/building-the-connection-url#Connectingintegrated
2. Download the JDBC file and extract to your preferred location
3. open the auth folder matching your OS x64 or x86
4. copy sqljdbc_auth.dll file
5. paste in: C:\Program Files\Java\jdk_version\bin
6. restart either eclipse or netbeans

I believe if you're willing to apply the approach to every possible orientation and to negative versions, a good start to image recognition (with good reliability) is to use eigenfaces: http://en.wikipedia.org/wiki/Eigenface

Another idea would be to transform both images into vectors of their components. A good way to do this is to create a vector that operates in x*y dimensions (x being the width of your image and y being the height), with the value for each dimension applying to the (x,y) pixel value. Then run a variant of K-Nearest Neighbours with two categories: match and no match. If it's sufficiently close to the original image it will fit in the match category, if not then it won't.

K Nearest Neighbours(KNN) can be found here, there are other good explanations of it on the web too: http://en.wikipedia.org/wiki/K-nearest_neighbor_algorithm

The benefits of KNN is that the more variants you're comparing to the original image, the more accurate the algorithm becomes. The downside is you need a catalogue of images to train the system first.

I use this on a daily basis to show history with files that changed:

git log --stat --pretty=short --graph

To keep it short, add an alias in your .gitconfig by doing:

git config --global alias.ls 'log --stat --pretty=short --graph'

We use the Url Rewrite extension for IIS for redirecting all HTTP requests to HTTPS. When trying to call a service not using transport security on an http://... address, this is the error that appeared.

So it might be worth checking if you can hit both the http and https addresses of the service via a browser and that it doesn't auto forward you with a 303 status code.

To answer the original question - there are various ways to do this, but the following would be the simplest.

If you already have a handle to the child node that you want to remove, i.e. you have a JavaScript variable that holds a reference to it:

myChildNode.parentNode.removeChild(myChildNode);

Obviously, if you are not using one of the numerous libraries that already do this, you would want to create a function to abstract this out:

function removeElement(node) {
    node.parentNode.removeChild(node);
}

EDIT: As has been mentioned by others: if you have any event handlers wired up to the node you are removing, you will want to make sure you disconnect those before the last reference to the node being removed goes out of scope, lest poor implementations of the JavaScript interpreter leak memory.

First of all There is no such class called Static class.The Static modifier use with inner class (called as Nested Class) says that it is a static member of Outer Class which means we can access it as with other static members and without having any instance of Outer class. (Which is benefit of static originally.)

Difference between using Nested class and regular Inner class is:

OuterClass.InnerClass inner = new OuterClass().new InnerClass();

First We can to instantiate Outerclass then we Can access Inner.

But if Class is Nested then syntax is:

OuterClass.InnerClass inner = new OuterClass.InnerClass();

Which uses the static Syntax as normal implementation of static keyword.

Nice that you brought this subject up.

This is an important thing/concept in git that a lof of git users would benefit from knowing. git rebase is a very powerful tool and enables you to squash commits together, remove commits etc. But as with any powerful tool, you basically need to know what you're doing or something might go really wrong.

When you are working locally and messing around with your local branches, you can do whatever you like as long as you haven't pushed the changes to the central repository. This means you can rewrite your own history, but not others history. By only messing around with your local stuff, nothing will have any impact on other repositories.

This is why it's important to remember that once you have pushed commits, you should not rebase them later on. The reason why this is important, is that other people might pull in your commits and base their work on your contributions to the code base, and if you later on decide to move that content from one place to another (rebase it) and push those changes, then other people will get problems and have to rebase their code. Now imagine you have 1000 developers :) It just causes a lot of unnecessary rework.

$("#tabs").tabs({active: [0,2], disabled: [3], selected: 2});

Where Selected is used for open Particular Tab or Select Particular Tab on onload.

New style classes may use super(Foo, self) where Foo is a class and self is the instance.

super(type[, object-or-type])

Return a proxy object that delegates method calls to a parent or sibling class of type. This is useful for accessing inherited methods that have been overridden in a class. The search order is same as that used by getattr() except that the type itself is skipped.

And in Python 3.x you can simply use super() inside a class without any parameters.

SELECT SUBSTR('299123456789',DECODE(least(LENGTH('299123456789'),9),9,-9,LENGTH('299123456789')*-1)) value from dual  

Gives 123456789

The same statement works even when the number is less than 9 digits:

SELECT SUBSTR('6789',DECODE(least(LENGTH('6789'),9),9,-9,LENGTH('6789')*-1)) value from dual  

Gives 6789

<TextBlock Margin="4" TextWrapping="Wrap" FontFamily="Verdana" FontSize="12">
        <Run TextDecorations="StrikeThrough"> Run cannot contain inline</Run>
        <Span FontSize="16"> Span can contain Run or Span or whatever 
            <LineBreak />
        <Bold FontSize="22" FontFamily="Times New Roman" >Bold can contains 
            <Italic>Italic</Italic></Bold></Span>
</TextBlock>

This happens if the first time you run NPM it's with sudo, for example when trying to do an npm install -g.

The cache folders need to be owned by the current user, not root.

sudo chown -R $USER:$GROUP ~/.npm
sudo chown -R $USER:$GROUP ~/.config

This will give ownership to the above folders when running with normal user permissions (not as sudo).

It's also worth noting that you shouldn't be installing global packages using SUDO. If you do run into issues with permissions, it's worth changing your global directory. The docs recommend:

mkdir ~/.npm-global

npm config set prefix '~/.npm-global'

Then updating your PATH in wherever you define that (~/.profile etc.)

export PATH=~/.npm-global/bin:$PATH

You'll then need to make sure the PATH env variable is set (restarting terminal or using the source command)

https://docs.npmjs.com/resolving-eacces-permissions-errors-when-installing-packages-globally

One possible thing you could do is use the Dictionary object straight out of the box and then just extend it with your own modifications:

public class TokenTree : Dictionary<string, string>
{
    public IDictionary<string, string> SubPairs;
}

This gives you the advantage of not having to enforce the rules of IDictionary for your Key (e.g., key uniqueness, etc).

And yup you got the concept of the constructor right :)