Here is the documentation of <select>. You are using 2 attributes:

multiple
This Boolean attribute indicates that multiple options can be selected in the list. If it is not specified, then only one option can be selected at a time. When multiple is specified, most browsers will show a scrolling list box instead of a single line dropdown.

size
If the control is presented as a scrolling list box (e.g. when multiple is specified), this attribute represents the number of rows in the list that should be visible at one time. Browsers are not required to present a select element as a scrolled list box. The default value is 0.

As described in the docs. <select size="1" multiple> will render a List box only 1 line visible and a scrollbar. So you are loosing the dropdown/arrow with the multiple attribute.

Bit late for reply but this should do the trick

Type myType = Type.GetType("AssemblyQualifiedName");

your assembly qualified name should be like this

"Boom.Bam.Class, Boom.Bam, Version=1.0.0.262, Culture=neutral, PublicKeyToken=e16dba1a3c4385bd"

I've found this script example useful (from http://www.mrexcel.com/forum/excel-questions/898899-json-api-excel.html#post4332075 ):

Sub getData()

    Dim Movie As Object
    Dim scriptControl As Object

    Set scriptControl = CreateObject("MSScriptControl.ScriptControl")
    scriptControl.Language = "JScript"

    With CreateObject("MSXML2.XMLHTTP")
        .Open "GET", "http://www.omdbapi.com/?t=frozen&y=&plot=short&r=json", False
        .send
        Set Movie = scriptControl.Eval("(" + .responsetext + ")")
        .abort
        With Sheets(2)
            .Cells(1, 1).Value = Movie.Title
            .Cells(1, 2).Value = Movie.Year
            .Cells(1, 3).Value = Movie.Rated
            .Cells(1, 4).Value = Movie.Released
            .Cells(1, 5).Value = Movie.Runtime
            .Cells(1, 6).Value = Movie.Director
            .Cells(1, 7).Value = Movie.Writer
            .Cells(1, 8).Value = Movie.Actors
            .Cells(1, 9).Value = Movie.Plot
            .Cells(1, 10).Value = Movie.Language
            .Cells(1, 11).Value = Movie.Country
            .Cells(1, 12).Value = Movie.imdbRating
        End With
    End With

End Sub

You should override toString() method in your Dog class. which will be called when you use this object in sysout.

To just find the number of days: timedelta has a 'days' attribute. You can simply query that.

>>>from datetime import datetime, timedelta
>>>d1 = datetime(2015, 9, 12, 13, 9, 45)
>>>d2 = datetime(2015, 8, 29, 21, 10, 12)
>>>d3 = d1- d2
>>>print d3
13 days, 15:59:33
>>>print d3.days
13

A more simple English explanation: jQuery is something that makes AJAX and other JavaScript tasks much easier.

To see what version you have on your Mac(Window also can run that code.), run react-native -v and you should get something like this:

If you want to know what version your project is running, look in /node_modules/react-native/package.json and look for the version key:

Rename column name in mysql

alter table categories change  type  category_type varchar(255);

This can also happen when your CA issues an intermediate cert

I ran into this issue (twice) with nginx and none of the solutions in this post explained the issue. The blog post here by a nice gentleman named Marco nailed it, and I am pasting it here for anyone who also runs into what I was seeing. https://medium.com/@mrkdsgn/steps-to-install-a-go-daddy-ssl-certificate-on-nginx-on-ubuntu-14-04-ff942b9fd7ff

In my case, go-daddy was the CA and this is specific to how they issue the cert and the intermediate cert bundles.

Here is the excerpt from Marco's blog post

With Nginx, if your CA included an intermediate certificate, you must create a single chained certificate file that contains your certificate and the CA’s intermediate certificates.

You can use this command to create a combined file called example.com.chained.crt:

cat example.com.crt intermediate.crt > example.com.chained.crt

I consider myself a bash junkie, BUT ... for the last 2 years have not find a single bash user friendly solution for this one. By "user-friendly" I mean just a single call away, which does not require me to remember complicated syntax + I can use the same find syntax as before , so the following solution works best for those ^^^

Copy paste this one in your shell and source the ~/.bash_aliases :

cat << "EOF" >> ~/.bash_aliases
# usage: source ~/.bash_aliases , instead of find type findd + rest of syntax
findd(){
   dir=$1; shift ;
   find  $dir -not -path "*/node_modules/*" -not -path "*/build/*" \
      -not -path "*/.cache/*" -not -path "*/.git/*" -not -path "*/venv/*" $@
}
EOF

Of course in order to add or remove dirs to exclude you would have to edit this alias func with your dirs of choice ...

Use Tortoise's RENAME command, and type in a relative path ("folder/file.ext").

It's a good practice to use a config file like this:

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <connectionStrings>
    <add name="MyConnString" connectionString="Data Source=(local);Initial Catalog=MyDB; Integrated Security=SSPI" ;Timeout=30"/>
  </connectionStrings>
  <appSettings>
    <add key="BackupFolder" value="C:/temp/"/>
  </appSettings>
</configuration> 

Your C# code will be something like this:

// read connectionstring from config file
var connectionString = ConfigurationManager.ConnectionStrings["MyConnString"].ConnectionString; 

// read backup folder from config file ("C:/temp/")
var backupFolder = ConfigurationManager.AppSettings["BackupFolder"];

var sqlConStrBuilder = new SqlConnectionStringBuilder(connectionString);

// set backupfilename (you will get something like: "C:/temp/MyDatabase-2013-12-07.bak")
var backupFileName = String.Format("{0}{1}-{2}.bak", 
    backupFolder, sqlConStrBuilder.InitialCatalog, 
    DateTime.Now.ToString("yyyy-MM-dd"));

using (var connection = new SqlConnection(sqlConStrBuilder.ConnectionString))
{
    var query = String.Format("BACKUP DATABASE {0} TO DISK='{1}'", 
        sqlConStrBuilder.InitialCatalog, backupFileName);

    using (var command = new SqlCommand(query, connection))
    {
        connection.Open();
        command.ExecuteNonQuery();
    }
}

Be careful - you have case mixing between local and remote branch!

Suppose you are in local branch downloadmanager now (git checkout downloadmanager)

You have next options:

1. Specify remote branch in pull/push commands every time (case sensitive):

   git pull origin DownloadManager

   or

   git pull origin downloadmanager:DownloadManager

2. Specify tracking branch on next push:

   git push -u origin DownloadManager

   (-u is a short form of --set-upstream)

   this will persist downloadmanager:DownloadManager link in config automatically (same result, as the next step).

3. Set in git config default remote tracking branch:

   git branch -u downloadmanager origin/DownloadManager

   (note, since git 1.8 for branch command -u is a short form of --set-upstream-to, which is a bit different from deprecated --set-upstream)

   or edit config manually (I prefer this way):

   git config --local -e

   -> This will open editor. Add block below (guess, after "master" block):

   [branch "downloadmanager"]
           remote = origin
           merge = refs/heads/DownloadManager
   

and after any of those steps you can use easily:

git pull

If you use TortoiseGit: RightClick on repo -> TortoiseGit -> Settings -> Git -> Edit local .git/config

You need a bindingsource object to act as an intermediary and assist in the binding. Then instead of updating the user interface, update the underlining model.

var model = (Fruit) bindingSource1.DataSource;

model.FruitType = "oranges";

bindingSource.ResetBindings();

Read up on BindingSource and simple data binding for Windows Forms.

You can use Linq to XML to do this:

XDocument doc = XDocument.Load("input.xml");
var q = from node in doc.Descendants("Setting")
        let attr = node.Attribute("name")
        where attr != null && attr.Value == "File1"
        select node;
q.ToList().ForEach(x => x.Remove());
doc.Save("output.xml");

The simplest solution is:

git reset --hard && git pull

put these two lines in your .bashrc file and run source ~/.bashrc

export ANDROID_HOME=/Users/$USER/Library/Android/sdk export PATH=${PATH}:$ANDROID_HOME/tools:$ANDROID_HOME/platform-tools

For linux I did this.(For the first line)

export ANDROID_HOME=/home/$USER/Android/Sdk

As mentioned in all other answers, the keyword continue will skip to the end of the current iteration.

Additionally you can label your loop starts and then use continue [labelname]; or break [labelname]; to control what's going on in nested loops:

loop1: for (int i = 1; i < 10; i++) {
    loop2: for (int j = 1; j < 10; j++) {
        if (i + j == 10)
            continue loop1;

        System.out.print(j);
    }
    System.out.println();
}

Hopefully, it will work for you.

startActivityForResult( intent, 1 , ActivityOptions.makeCustomAnimation(getActivity(),R.anim.slide_out_bottom,R.anim.slide_in_bottom).toBundle());

You can define a Multi-module project structure, then you can set the configuration for sonar in one properties file in the root folder of your project, (Way #1)

Apache Tika offers in tika-core a mime type detection based based on magic markers in the stream prefix. tika-core does not fetch other dependencies, which makes it as lightweight as the currently unmaintained Mime Type Detection Utility.

Simple code example (Java 7), using the variables theInputStream and theFileName

try (InputStream is = theInputStream;
        BufferedInputStream bis = new BufferedInputStream(is);) {
    AutoDetectParser parser = new AutoDetectParser();
    Detector detector = parser.getDetector();
    Metadata md = new Metadata();
    md.add(Metadata.RESOURCE_NAME_KEY, theFileName);
    MediaType mediaType = detector.detect(bis, md);
    return mediaType.toString();
}

Please note that MediaType.detect(...) cannot be used directly (TIKA-1120). More hints are provided at https://tika.apache.org/1.24/detection.html.

I would suggest using css attributes to do this. You can use position:absolute to position an element on top of another.

For example:

<div id="container">
   <div id="on-top">Top!</div>
   <div id="on-bottom">Bottom!</div>
</div>

and css

#container {position:relative;}
#on-top {position:absolute; z-index:5;}
#on-bottom {position:absolute; z-index:4;}

I would take a look at this for advice: http://www.w3schools.com/cssref/pr_class_position.asp

And finally here is a jsfiddle to show you my example

http://jsfiddle.net/Wgfw6/

I had a similar problem using Flask, but I did not have to resort to JSON. I just passed a list letters = ['a','b','c'] with render_template('show_entries.html', letters=letters), and set

var letters = {{ letters|safe }}

in my javascript code. Jinja2 replaced {{ letters }} with ['a','b','c'], which javascript interpreted as an array of strings.

I'm late to the party but would like to share the solution I found to the same issue: Specifically, I was looking to do sequential combinations, so for "STAR" I wanted "STAR", "TA", "AR", but not "SR".

lst = [S, T, A, R]
lstCombos = []
for Length in range(0,len(lst)+1):
    for i in lst:
        lstCombos.append(lst[lst.index(i):lst.index(i)+Length])

Duplicates can be filtered with adding in an additional if before the last line:

lst = [S, T, A, R]
lstCombos = []
for Length in range(0,len(lst)+1):
    for i in lst:
         if not lst[lst.index(i):lst.index(i)+Length]) in lstCombos:
             lstCombos.append(lst[lst.index(i):lst.index(i)+Length])

If for some reason this returns blank lists in the output, which happened to me, I added:

for subList in lstCombos:
    if subList = '':
         lstCombos.remove(subList)

A 2D array is basically a 1D array of pointers, where every pointer is pointing to a 1D array, which will hold the actual data.

Here N is row and M is column.

dynamic allocation

int** ary = new int*[N];
  for(int i = 0; i < N; i++)
      ary[i] = new int[M];

fill

for(int i = 0; i < N; i++)
    for(int j = 0; j < M; j++)
      ary[i][j] = i;

print

for(int i = 0; i < N; i++)
    for(int j = 0; j < M; j++)
      std::cout << ary[i][j] << "\n";

free

for(int i = 0; i < N; i++)
    delete [] ary[i];
delete [] ary;

I performed the below steps and it worked for me:

1) connect to SQL Server->Security->logins->search for the particular user->Properties->server Roles-> enable "sys admin" check box

You can use this function, but its will return false if website offline.

  function isValidUrl($url) {
    $url = parse_url($url);
    if (!isset($url["host"])) return false;
    return !(gethostbyname($url["host"]) == $url["host"]);
}

Since .NET 4.5 you can use combination of async and await with Progress for sending updates to UI thread:

private void Calculate(int i)
{
    double pow = Math.Pow(i, i);
}

public void DoWork(IProgress<int> progress)
{
    // This method is executed in the context of
    // another thread (different than the main UI thread),
    // so use only thread-safe code
    for (int j = 0; j < 100000; j++)
    {
        Calculate(j);

        // Use progress to notify UI thread that progress has
        // changed
        if (progress != null)
            progress.Report((j + 1) * 100 / 100000);
    }
}

private async void button1_Click(object sender, EventArgs e)
{
    progressBar1.Maximum = 100;
    progressBar1.Step = 1;

    var progress = new Progress<int>(v =>
    {
        // This lambda is executed in context of UI thread,
        // so it can safely update form controls
        progressBar1.Value = v;
    });

    // Run operation in another thread
    await Task.Run(() => DoWork(progress));

    // TODO: Do something after all calculations
}

Tasks are currently the preferred way to implement what BackgroundWorker does.

Tasks and Progress are explained in more detail here:

• Async in 4.5: Enabling Progress and Cancellation in Async APIs
• Reporting Progress from Async Tasks by Stephen Cleary
• Task parallel library replacement for BackgroundWorker?

Now that Apple has non-cosensually updated all MacOS users to zsh, the correct answer doesn't work anymore.

git reset --soft HEAD^
zsh: no matches found: HEAD^

You can prevent the shell from treating the ^ as a special character by single quoting it.

git reset --soft 'HEAD^'

Alternatively you can disable this behavior in your shell. by updating your ~/.zshrc with

unsetopt nomatch

You can hack the useMemo hook to imitate a componentWillMount lifecycle event. Just do:

const Component = () => {
   useMemo(() => {
     // componentWillMount events
   },[]);
   useEffect(() => {
     // componentDidMount events
     return () => {
       // componentWillUnmount events
     }
   }, []);
};

You would need to keep the useMemo hook before anything that interacts with your state. This is not how it is intended but it worked for me for all componentWillMount issues.

This works because useMemo doesnt require to actually return a value and you dont have to actually use it as anything, but since it memorizes a value based on dependencies which will only run once ("[]") and its on top of our component it runs once when the component mounts before anything else.

#nav ul {
    display: inline-block;
    list-style-type: none;
}

It should work, I tested it in your site.

const destroy = container => {
  document.getElementById(container).innerHTML = '';
};

Faster previous

const destroyFast = container => {
  const el = document.getElementById(container);
  while (el.firstChild) el.removeChild(el.firstChild);
};

Python's built-in itertools module actually has a groupby function , but for that the elements to be grouped must first be sorted such that the elements to be grouped are contiguous in the list:

from operator import itemgetter
sortkeyfn = itemgetter(1)
input = [('11013331', 'KAT'), ('9085267', 'NOT'), ('5238761', 'ETH'), 
 ('5349618', 'ETH'), ('11788544', 'NOT'), ('962142', 'ETH'), ('7795297', 'ETH'), 
 ('7341464', 'ETH'), ('9843236', 'KAT'), ('5594916', 'ETH'), ('1550003', 'ETH')] 
input.sort(key=sortkeyfn)

Now input looks like:

[('5238761', 'ETH'), ('5349618', 'ETH'), ('962142', 'ETH'), ('7795297', 'ETH'),
 ('7341464', 'ETH'), ('5594916', 'ETH'), ('1550003', 'ETH'), ('11013331', 'KAT'),
 ('9843236', 'KAT'), ('9085267', 'NOT'), ('11788544', 'NOT')]

groupby returns a sequence of 2-tuples, of the form (key, values_iterator). What we want is to turn this into a list of dicts where the 'type' is the key, and 'items' is a list of the 0'th elements of the tuples returned by the values_iterator. Like this:

from itertools import groupby
result = []
for key,valuesiter in groupby(input, key=sortkeyfn):
    result.append(dict(type=key, items=list(v[0] for v in valuesiter)))

Now result contains your desired dict, as stated in your question.

You might consider, though, just making a single dict out of this, keyed by type, and each value containing the list of values. In your current form, to find the values for a particular type, you'll have to iterate over the list to find the dict containing the matching 'type' key, and then get the 'items' element from it. If you use a single dict instead of a list of 1-item dicts, you can find the items for a particular type with a single keyed lookup into the master dict. Using groupby, this would look like:

result = {}
for key,valuesiter in groupby(input, key=sortkeyfn):
    result[key] = list(v[0] for v in valuesiter)

result now contains this dict (this is similar to the intermediate res defaultdict in @KennyTM's answer):

{'NOT': ['9085267', '11788544'], 
 'ETH': ['5238761', '5349618', '962142', '7795297', '7341464', '5594916', '1550003'], 
 'KAT': ['11013331', '9843236']}

(If you want to reduce this to a one-liner, you can:

result = dict((key,list(v[0] for v in valuesiter)
              for key,valuesiter in groupby(input, key=sortkeyfn))

or using the newfangled dict-comprehension form:

result = {key:list(v[0] for v in valuesiter)
              for key,valuesiter in groupby(input, key=sortkeyfn)}

I know that due to this ugly anonymous inner class usage of TransactionTemplate doesn't look nice, but when for some reason we want to have a test method transactional IMHO it is the most flexible option.

In some cases (it depends on the application type) the best way to use transactions in Spring tests is a turned-off @Transactional on the test methods. Why? Because @Transactional may leads to many false-positive tests. You may look at this sample article to find out details. In such cases TransactionTemplate can be perfect for controlling transaction boundries when we want that control.

Update

Based on Manipulating the browser history, passing the empty string as second parameter of pushState method (aka title) should be safe against future changes to the method, so it's better to use pushState like this:

history.pushState(null, '', '/en/step2');    

You can read more about that in mentioned article

Original Answer

Use history.pushState like this:

history.pushState(null, null, '/en/step2');

• More info (MDN article): Manipulating the browser history
• Can I use
• Maybe you should take a look @ Does Internet Explorer support pushState and replaceState?

Update 2 to answer Idan Dagan's comment:

Why not using history.replaceState()?

From MDN

history.replaceState() operates exactly like history.pushState() except that replaceState() modifies the current history entry instead of creating a new one

That means if you use replaceState, yes the url will be changed but user can not use Browser's Back button to back to prev. state(s) anymore (because replaceState doesn't add new entry to history) and it's not recommended and provide bad UX.

Update 3 to add window.onpopstate

So, as this answer got your attention, here is additional info about manipulating the browser history, after using pushState, you can detect the back/forward button navigation by using window.onpopstate like this:

window.onpopstate = function(e) {
    // ... 
};

As the first argument of pushState is an object, if you passed an object instead of null, you can access that object in onpopstate which is very handy, here is how:

window.onpopstate = function(e) {
    if(e.state) {
        console.log(e.state);
    }
};

Update 4 to add Reading the current state:

When your page loads, it might have a non-null state object, you can read the state of the current history entry without waiting for a popstate event using the history.state property like this:

console.log(history.state);

Bonus: Use following to check history.pushState support:

if (history.pushState) {
  // \o/
}

Array.from(myMap.keys()) does not work in google application scripts.

Trying to use it results in the error TypeError: Cannot find function from in object function Array() { [native code for Array.Array, arity=1] }.

To get a list of keys in GAS do this:

var keysList = Object.keys(myMap);

Faced the same issue. To solve it,

• I had to download and install the latest version of gradle using the comand line. $ sdk install gradle using the package manager or $ brew install gradle for mac. You might need to first install brew if not yet.
• Then I cleaned the project and restarted android studio and it worked.

Try the below method in a singleton class:

-(NSString *)typeOfDevice
    {
        if(UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)
        {
            CGSize result = [[UIScreen mainScreen] bounds].size;
            if(result.height == 480)
            {
                return @"Iphone";
            }
            if(result.height == 568)
            {
                return @"Iphone 5";
            }
        }
        else{
            return @"Ipad";;
        }


        return @"Iphone";
    }

Try to run xcrun simctl delete unavailable in your terminal.

Original answer: Xcode - free to clear devices folder?

This is just an indentation problem since Python is very strict when it comes to it.

If you are using Sublime, you can select all, click on the lower right beside 'Python' and make sure you check 'Indent using spaces' and choose your Tab Width to be consistent, then Convert Indentation to Spaces to convert all tabs to spaces.

In .Net 2.0, you can use Console.Beep().

// Default beep
Console.Beep();

You can also specify the frequency and length of the beep in milliseconds.

// Beep at 5000 Hz for 1 second
Console.Beep(5000, 1000);

For more information refer http://msdn.microsoft.com/en-us/library/8hftfeyw%28v=vs.110%29.aspx

You are consuming a line at, which is discarded

while((str=input.readLine())!=null && str.length()!=0)

and reading a bigint at

BigInteger n = new BigInteger(input.readLine());

so try getting the bigint from string which is read as

BigInteger n = new BigInteger(str);

   Constructor used: BigInteger(String val)

Aslo change while((str=input.readLine())!=null && str.length()!=0) to

while((str=input.readLine())!=null)

see related post string to bigint

readLine()
Returns:
    A String containing the contents of the line, not including any line-termination characters, or null if the end of the stream has been reached 

see javadocs

Adding the following to build.gradle solves the problem :

android {
 ...
compileOptions.encoding = 'ISO-8859-1'
 }

• Ctrl + K + 0: fold all levels (namespace, class, method, and block)
• Ctrl + K + 1: namspace
• Ctrl + K + 2: class
• Ctrl + K + 3: methods
• Ctrl + K + 4: blocks
• Ctrl + K + [ or Ctrl + k + ]: current cursor block
• Ctrl + K + j: UnFold

Here is a full version

function htmldecode(s){
    window.HTML_ESC_MAP = {
    "nbsp":" ","iexcl":"¡","cent":"¢","pound":"£","curren":"¤","yen":"¥","brvbar":"¦","sect":"§","uml":"¨","copy":"©","ordf":"ª","laquo":"«","not":"¬","reg":"®","macr":"¯","deg":"°","plusmn":"±","sup2":"²","sup3":"³","acute":"´","micro":"µ","para":"¶","middot":"·","cedil":"¸","sup1":"¹","ordm":"º","raquo":"»","frac14":"¼","frac12":"½","frac34":"¾","iquest":"¿","Agrave":"À","Aacute":"Á","Acirc":"Â","Atilde":"Ã","Auml":"Ä","Aring":"Å","AElig":"Æ","Ccedil":"Ç","Egrave":"È","Eacute":"É","Ecirc":"Ê","Euml":"Ë","Igrave":"Ì","Iacute":"Í","Icirc":"Î","Iuml":"Ï","ETH":"Ð","Ntilde":"Ñ","Ograve":"Ò","Oacute":"Ó","Ocirc":"Ô","Otilde":"Õ","Ouml":"Ö","times":"×","Oslash":"Ø","Ugrave":"Ù","Uacute":"Ú","Ucirc":"Û","Uuml":"Ü","Yacute":"Ý","THORN":"Þ","szlig":"ß","agrave":"à","aacute":"á","acirc":"â","atilde":"ã","auml":"ä","aring":"å","aelig":"æ","ccedil":"ç","egrave":"è","eacute":"é","ecirc":"ê","euml":"ë","igrave":"ì","iacute":"í","icirc":"î","iuml":"ï","eth":"ð","ntilde":"ñ","ograve":"ò","oacute":"ó","ocirc":"ô","otilde":"õ","ouml":"ö","divide":"÷","oslash":"ø","ugrave":"ù","uacute":"ú","ucirc":"û","uuml":"ü","yacute":"ý","thorn":"þ","yuml":"ÿ","fnof":"ƒ","Alpha":"?","Beta":"?","Gamma":"G","Delta":"?","Epsilon":"?","Zeta":"?","Eta":"?","Theta":"T","Iota":"?","Kappa":"?","Lambda":"?","Mu":"?","Nu":"?","Xi":"?","Omicron":"?","Pi":"?","Rho":"?","Sigma":"S","Tau":"?","Upsilon":"?","Phi":"F","Chi":"?","Psi":"?","Omega":"O","alpha":"a","beta":"ß","gamma":"?","delta":"d","epsilon":"e","zeta":"?","eta":"?","theta":"?","iota":"?","kappa":"?","lambda":"?","mu":"µ","nu":"?","xi":"?","omicron":"?","pi":"p","rho":"?","sigmaf":"?","sigma":"s","tau":"t","upsilon":"?","phi":"f","chi":"?","psi":"?","omega":"?","thetasym":"?","upsih":"?","piv":"?","bull":"•","hellip":"…","prime":"'","Prime":""","oline":"?","frasl":"/","weierp":"P","image":"I","real":"R","trade":"™","alefsym":"?","larr":"?","uarr":"?","rarr":"?","darr":"?","harr":"?","crarr":"?","lArr":"?","uArr":"?","rArr":"?","dArr":"?","hArr":"?","forall":"?","part":"?","exist":"?","empty":"Ø","nabla":"?","isin":"?","notin":"?","ni":"?","prod":"?","sum":"?","minus":"-","lowast":"*","radic":"v","prop":"?","infin":"8","ang":"?","and":"?","or":"?","cap":"n","cup":"?","int":"?","there4":"?","sim":"~","cong":"?","asymp":"˜","ne":"?","equiv":"=","le":"=","ge":"=","sub":"?","sup":"?","nsub":"?","sube":"?","supe":"?","oplus":"?","otimes":"?","perp":"?","sdot":"·","lceil":"?","rceil":"?","lfloor":"?","rfloor":"?","lang":"<","rang":">","loz":"?","spades":"?","clubs":"?","hearts":"?","diams":"?","\"":"quot","amp":"&","lt":"<","gt":">","OElig":"Œ","oelig":"œ","Scaron":"Š","scaron":"š","Yuml":"Ÿ","circ":"ˆ","tilde":"˜","ndash":"–","mdash":"—","lsquo":"‘","rsquo":"’","sbquo":"‚","ldquo":"“","rdquo":"”","bdquo":"„","dagger":"†","Dagger":"‡","permil":"‰","lsaquo":"‹","rsaquo":"›","euro":"€"};
    if(!window.HTML_ESC_MAP_EXP)
        window.HTML_ESC_MAP_EXP = new RegExp("&("+Object.keys(HTML_ESC_MAP).join("|")+");","g");
    return s?s.replace(window.HTML_ESC_MAP_EXP,function(x){
        return HTML_ESC_MAP[x.substring(1,x.length-1)]||x;
    }):s;
}

Usage

htmldecode("∑ >€");

With accordance with the answer by daveraja, here is a bash script which will solve the purpose.

Consider a situation if you are using C-shell and you want to execute a command without leaving the C-shell context/window as follows,

Command to be executed: Search exact word 'Testing' in current directory recursively only in *.h, *.c files

grep -nrs --color -w --include="*.{h,c}" Testing ./

Solution 1: Enter into bash from C-shell and execute the command

bash
grep -nrs --color -w --include="*.{h,c}" Testing ./
exit

Solution 2: Write the intended command into a text file and execute it using bash

echo 'grep -nrs --color -w --include="*.{h,c}" Testing ./' > tmp_file.txt
bash tmp_file.txt

Solution 3: Run command on the same line using bash

bash -c 'grep -nrs --color -w --include="*.{h,c}" Testing ./'

Solution 4: Create a sciprt (one-time) and use it for all future commands

alias ebash './execute_command_on_bash.sh'
ebash grep -nrs --color -w --include="*.{h,c}" Testing ./

The script is as follows,

#!/bin/bash
# =========================================================================
# References:
# https://stackoverflow.com/a/13343457/5409274
# https://stackoverflow.com/a/26733366/5409274
# https://stackoverflow.com/a/2853811/5409274
# https://stackoverflow.com/a/2853811/5409274
# https://www.linuxquestions.org/questions/other-%2Anix-55/how-can-i-run-a-command-on-another-shell-without-changing-the-current-shell-794580/
# https://www.tldp.org/LDP/abs/html/internalvariables.html
# https://stackoverflow.com/a/4277753/5409274
# =========================================================================

# Enable following line to see the script commands
# getting printing along with their execution. This will help for debugging.
#set -o verbose

E_BADARGS=85

if [ ! -n "$1" ]
then
  echo "Usage: `basename $0` grep -nrs --color -w --include=\"*.{h,c}\" Testing ."
  echo "Usage: `basename $0` find . -name \"*.txt\""
  exit $E_BADARGS
fi  

# Create a temporary file
TMPFILE=$(mktemp)

# Add stuff to the temporary file
#echo "echo Hello World...." >> $TMPFILE

#initialize the variable that will contain the whole argument string
argList=""
#iterate on each argument
for arg in "$@"
do
  #if an argument contains a white space, enclose it in double quotes and append to the list
  #otherwise simply append the argument to the list
  if echo $arg | grep -q " "; then
   argList="$argList \"$arg\""
  else
   argList="$argList $arg"
  fi
done

#remove a possible trailing space at the beginning of the list
argList=$(echo $argList | sed 's/^ *//')

# Echoing the command to be executed to tmp file
echo "$argList" >> $TMPFILE

# Note: This should be your last command
# Important last command which deletes the tmp file
last_command="rm -f $TMPFILE"
echo "$last_command" >> $TMPFILE

#echo "---------------------------------------------"
#echo "TMPFILE is $TMPFILE as follows"
#cat $TMPFILE
#echo "---------------------------------------------"

check_for_last_line=$(tail -n 1 $TMPFILE | grep -o "$last_command")
#echo $check_for_last_line

#if tail -n 1 $TMPFILE | grep -o "$last_command"
if [ "$check_for_last_line" == "$last_command" ]
then
  #echo "Okay..."
  bash $TMPFILE
  exit 0
else
  echo "Something is wrong"
  echo "Last command in your tmp file should be removing itself"
  echo "Aborting the process"
  exit 1
fi

Wrap your Razor code in @{ } when inside JS script and be aware of using just @ Sometimes it doesn't work:

function hideSurveyReminder() {
       @Session["_isSurveyPassed"] = true;
    }

This will produce

function hideSurveyReminder() {
       False = true;
    }

in browser =(

Below code worked for me:

string _stDate = Convert.ToDateTime(DateTime.Today.AddMonths(-12)).ToString("MM/dd/yyyy");
String format ="MM/dd/yyyy";
IFormatProvider culture = new System.Globalization.CultureInfo("fr-FR", true);
DateTime _Startdate = DateTime.ParseExact(_stDate, format, culture);

Be very careful: all of the answers on this page are implicitly taking the decision of where the binning starts - the left-hand edge of the left-most bin, if you like - out of the user's hands. If the user is combining any of these functions for binning data with his/her own decision about where binning starts (as is done on the blog which is linked to above) the functions above are all incorrect. With an arbitrary starting point for binning 'Min', the correct function is:

bin(x) = width*(floor((x-Min)/width)+0.5) + Min

You can see why this is correct sequentially (it helps to draw a few bins and a point somewhere in one of them). Subtract Min from your data point to see how far into the binning range it is. Then divide by binwidth so that you're effectively working in units of 'bins'. Then 'floor' the result to go to the left-hand edge of that bin, add 0.5 to go to the middle of the bin, multiply by the width so that you're no longer working in units of bins but in an absolute scale again, then finally add back on the Min offset you subtracted at the start.

Consider this function in action:

Min = 0.25 # where binning starts
Max = 2.25 # where binning ends
n = 2 # the number of bins
width = (Max-Min)/n # binwidth; evaluates to 1.0
bin(x) = width*(floor((x-Min)/width)+0.5) + Min

e.g. the value 1.1 truly falls in the left bin:

• this function correctly maps it to the centre of the left bin (0.75);
• Born2Smile's answer, bin(x)=width*floor(x/width), incorrectly maps it to 1;
• mas90's answer, bin(x)=width*floor(x/width) + binwidth/2.0, incorrectly maps it to 1.5.

Born2Smile's answer is only correct if the bin boundaries occur at (n+0.5)*binwidth (where n runs over integers). mas90's answer is only correct if the bin boundaries occur at n*binwidth.

If you're using homebrew:

brew services restart memcached

If you don't want _id in response, you can refactor your code something like this:

jsonResponse = getResponse(mock_data)
del jsonResponse['_id'] # removes '_id' from the final response
return jsonResponse

This will remove the TypeError: ObjectId('') is not JSON serializable error.

Use this library: fish (GitHub).

Usage:

>>> import fish
>>> while churning:
...     churn_churn()
...     fish.animate()

Have fun!

you can replace your pattern with

regex = ur"\[P\]([\w\s]+)\[\/P\]"

You'll want to use the django serializer to help with unicode stuff:

from django.core import serializers

json_serializer = serializers.get_serializer("json")()
    response =  json_serializer.serialize(list, ensure_ascii=False, indent=2, use_natural_keys=True)
    return HttpResponse(response, mimetype="application/json")

Using the suggested Maven properties plugin I was able to read in a buildNumber.properties file that I use to version my builds.

  <build>    
    <plugins>
      <plugin>
        <groupId>org.codehaus.mojo</groupId>
        <artifactId>properties-maven-plugin</artifactId>
        <version>1.0-alpha-1</version>
        <executions>
          <execution>
            <phase>initialize</phase>
            <goals>
              <goal>read-project-properties</goal>
            </goals>
            <configuration>
              <files>
                <file>${basedir}/../project-parent/buildNumber.properties</file>
              </files>
            </configuration>
          </execution>
        </executions>
      </plugin>
   </plugins>

Try:

var firstElement = lstComp.First();

You can also use FirstOrDefault() just in case lstComp does not contain any items.

http://msdn.microsoft.com/en-gb/library/bb340482(v=vs.100).aspx

Edit:

To get the Component Value:

var firstElement = lstComp.First().ComponentValue("Dep");

This would assume there is an element in lstComp. An alternative and safer way would be...

var firstOrDefault = lstComp.FirstOrDefault();
if (firstOrDefault != null) 
{
    var firstComponentValue = firstOrDefault.ComponentValue("Dep");
}

Use a pattern along these lines:

function getValue(file) {
  return lookupValue(file);
}

getValue('myFile.txt').then(function(res) {
  // do whatever with res here
});

(although this is a bit redundant, I'm sure your actual code is more complicated)

A procedure can't return a table as such. However you can select from a table in a procedure and direct it into a table (or table variable) like this:

create procedure p_x
as
begin
declare @t table(col1 varchar(10), col2 float, col3 float, col4 float)
insert @t values('a', 1,1,1)
insert @t values('b', 2,2,2)

select * from @t
end
go

declare @t table(col1 varchar(10), col2 float, col3 float, col4 float)
insert @t
exec p_x

select * from @t

Using a plain object, you can pair up strings that represent property names with their corresponding values. Changing the background color, and making text bolder, for instance would look like this:

$("#message").css({
    "background-color": "#0F0", 
    "font-weight"     : "bolder"
});

Alternatively, you can use the JavaScript property names too:

$("#message").css({
    backgroundColor: "rgb(128, 115, 94)",
    fontWeight     : "700"
});

More information can be found in jQuery's documentation.

Simplified example (with counter):

With Me.lstbox
    .ColumnCount = 2
    .ColumnWidths = "60;60"
    .AddItem
    .List(i, 0) = Company_ID
    .List(i, 1) = Company_name 
    i = i + 1

end with

Make sure to start the counter with 0, not 1 to fill up a listbox.

list.sort(function(item1, item2){
    return +(item1.attr > item2.attr) || +(item1.attr === item2.attr) - 1;
}) 

How they work samples:

+('aaa'>'bbb')||+('aaa'==='bbb')-1
+(false)||+(false)-1
0||0-1
-1

+('bbb'>'aaa')||+('bbb'==='aaa')-1
+(true)||+(false)-1
1||0-1
1

+('aaa'>'aaa')||+('aaa'==='aaa')-1
+(false)||+(true)-1
0||1-1
0

Well you need to be specific here. As far as I know, the key in a registry is a "folder" of properties. So did you mean get the value of a property? If so, try something like this:

(Get-ItemProperty HKLM:\Software\Microsoft\PowerShell\1\PowerShellEngine -Name PowerShellVersion).PowerShellVersion

First we get an object containing the property we need with Get-ItemProperty and then we get the value of for the property we need from that object. That will return the value of the property as a string. The example above gives you the PS version for "legacy"/compatibility-mdoe powershell (1.0 or 2.0).

Declare a prototype to get first array element as:

Array.prototype.first = function () {
   return this[0];
};

Then use it as:

var array = [0, 1, 2, 3];
var first = array.first();
var _first = [0, 1, 2, 3].first();

Or simply (:

first = array[0];

Use the concatenation operator +, and the fact that numeric types will convert automatically into strings:

var a = 1;
var b = "bob";
var c = b + a;

According to cppreference, nullptr is a keyword that:

denotes the pointer literal. It is a prvalue of type std::nullptr_t. There exist implicit conversions from nullptr to null pointer value of any pointer type and any pointer to member type. Similar conversions exist for any null pointer constant, which includes values of type std::nullptr_t as well as the macro NULL.

So nullptr is a value of a distinct type std::nullptr_t, not int. It implicitly converts to the null pointer value of any pointer type. This magic happens under the hood for you and you don't have to worry about its implementation. NULL, however, is a macro and it is an implementation-defined null pointer constant. It's often defined like this:

#define NULL 0

i.e. an integer.

This is a subtle but important difference, which can avoid ambiguity.

For example:

int i = NULL;     //OK
int i = nullptr;  //error
int* p = NULL;    //OK
int* p = nullptr; //OK

and when you have two function overloads like this:

void func(int x);   //1)
void func(int* x);  //2)

func(NULL) calls 1) because NULL is an integer. func(nullptr) calls 2) because nullptr converts implicitly to a pointer of type int*.

Also if you see a statement like this:

auto result = findRecord( /* arguments */ );

if (result == nullptr)
{
 ...
}

and you can't easily find out what findRecord returns, you can be sure that result must be a pointer type; nullptr makes this more readable.

In a deduced context, things work a little differently. If you have a template function like this:

template<typename T>
void func(T *ptr)
{
    ...
}

and you try to call it with nullptr:

func(nullptr);

you will get a compiler error because nullptr is of type nullptr_t. You would have to either explicitly cast nullptr to a specific pointer type or provide an overload/specialization for func with nullptr_t.

• avoid ambiguity between function overloads
• enables you to do template specialization
• more secure, intuitive and expressive code, e.g. if (ptr == nullptr) instead of if (ptr == 0)

In some circumstances, it may be possible to move (all, or at least a key part) of the software into a web service that your organization hosts.

That way, the license checks can be performed in the safety of your own server room.

The proper function is int fileno(FILE *stream). It can be found in <stdio.h>, and is a POSIX standard but not standard C.

This returns the last modified date and its age.

DateTime.Now.Subtract(System.IO.File.GetLastWriteTime(FilePathwithName).Date)

I realize this is an old question and referring to TOAD but if you need to code around this using c# you can split up the list through a for loop. You can essentially do the same with Java using subList();

    List<Address> allAddresses = GetAllAddresses();
    List<Employee> employees = GetAllEmployees(); // count > 1000

    List<Address> addresses = new List<Address>();

    for (int i = 0; i < employees.Count; i += 1000)
    {
        int count = ((employees.Count - i) < 1000) ? (employees.Count - i) - 1 : 1000;
        var query = (from address in allAddresses
                     where employees.GetRange(i, count).Contains(address.EmployeeId)
                     && address.State == "UT"
                     select address).ToList();

        addresses.AddRange(query);
    }

Hope this helps someone.

A couple of things:

1. Your regexes need to be anchored by separators* or you'll match partial words, as is the case now
2. You're not using the proper syntax for a non-capturing group. It's (?: not (:?

If you address the first problem, you won't need groups at all.

*That is, a blank or beginning/end of string.

You can write this

$filename = current(explode(".", $file));

These will return current element of array, if not used before.

Since it is really a formatting issue when displaying the date (e.g. displays in local time), I like to use the new(ish) Intl.DateTimeFormat object to perform the formatting as it is more explicit and provides more output options:

const dateOptions = { timeZone: 'UTC', month: 'long', day: 'numeric', year: 'numeric' };

const dateFormatter = new Intl.DateTimeFormat('en-US', dateOptions);
const dateAsFormattedString = dateFormatter.format(new Date('2019-06-01T00:00:00.000+00:00'));

console.log(dateAsFormattedString) // "June 1, 2019"

As shown, by setting the timeZone to 'UTC' it will not perform local conversions. As a bonus, it also allows you to create more polished outputs. You can read more about the Intl.DateTimeFormat object from Mozilla - Intl.DateTimeFormat.

Edit:

The same functionality can be achieved without creating a new Intl.DateTimeFormat object. Simply pass the locale and date options directly into the toLocaleDateString() function.

const dateOptions = { timeZone: 'UTC', month: 'long', day: 'numeric', year: 'numeric' };
const myDate = new Date('2019-06-01T00:00:00.000+00:00');
today.toLocaleDateString('en-US', dateOptions); // "June 1, 2019"

String literals

Escaping single quotes ' by doubling them up -> '' is the standard way and works of course:

'user's log'     -- incorrect syntax (unbalanced quote)
'user''s log'

In old versions or if you still run with standard_conforming_strings = off or, generally, if you prepend your string with E to declare Posix escape string syntax, you can also escape with the backslash \:

E'user\'s log'

Backslash itself is escaped with another backslash. But that's generally not preferable.
If you have to deal with many single quotes or multiple layers of escaping, you can avoid quoting hell in PostgreSQL with dollar-quoted strings:

'escape '' with '''''
$$escape ' with ''$$

To further avoid confusion among dollar-quotes, add a unique token to each pair:

$token$escape ' with ''$token$

Which can be nested any number of levels:

$token2$Inner string: $token1$escape ' with ''$token1$ is nested$token2$

Pay attention if the $ character should have special meaning in your client software. You may have to escape it in addition. This is not the case with standard PostgreSQL clients like psql or pgAdmin.

That is all very useful for writing plpgsql functions or ad-hoc SQL commands. It cannot alleviate the need to use prepared statements or some other method to safeguard against SQL injection in your application when user input is possible, though. @Craig's answer has more on that. More details:

• SQL injection in Postgres functions vs prepared queries

Values inside Postgres

When dealing with values inside the database, there are a couple of useful functions to quote strings properly:

• quote_literal() or quote_nullable() - the latter outputs the string NULL for null input. (There is also quote_ident() to double-quote strings where needed to get valid SQL identifiers.)
• format() with the format specifier %L is equivalent to quote_nullable().
  Like: format('%L', string_var)
• concat() or concat_ws() are typically no good for this purpose as those do not escape nested single quotes and backslashes.

I use this rule for my applications:

x.y.z

Where:

• x = main version number, 1-~.
• y = feature number, 0-9. Increase this number if the change contains new features with or without bug fixes.
• z = hotfix number, 0-~. Increase this number if the change only contains bug fixes.

Example:

• For new application, the version number starts with 1.0.0.
• If the new version contains only bug fixes, increase the hotfix number so the version number will be 1.0.1.
• If the new version contains new features with or without bug fixes, increase the feature number and reset the hotfix number to zero so the version number will be 1.1.0. If the feature number reaches 9, increase the main version number and reset the feature and hotfix number to zero (2.0.0 etc)

Via Bootstrap Grid, you can easily get the cross browser compatible solution.

<div class="container">     
  <div class="row">
    <div class="col-sm-6" style="background-color:lavender;">
      Div1       
    </div>
    <div class="col-sm-6" style="background-color:lavenderblush;">
          Div2
    </div>
  </div>
</div>

jsfiddle: http://jsfiddle.net/DTcHh/4197/

Create .gitignore file in root folder directly by code editor or by command

For Mac & Linux

 touch .gitignore 

For Windows

 echo >.gitignore 

open .gitignore declare folder or file name like this /foldername

Remove the second id declaration of table:

<table id="data" border="1" cellspacing="1" width="500" **id="table1"**>

there is also git stash - which "stashes" your local changes and can be reapplied at a later time or dropped if is no longer required

more info on stashing

As far as I know, you may see if you are the creator of a branch only. This is indicated by the first row in .git/ref/heads/<branch>. If it ends with "Created from HEAD" you are the creator.

Unlimited loop in one-line command for use in cmd windows:

FOR /L %N IN () DO @echo Oops

If you need to both get the raw content from the request, but also need to use a bound model version of it in the controller, you will likely get this exception.

NotSupportedException: Specified method is not supported. 

For example, your controller might look like this, leaving you wondering why the solution above doesn't work for you:

public async Task<IActionResult> Index(WebhookRequest request)
{
    using var reader = new StreamReader(HttpContext.Request.Body);

    // this won't fix your string empty problems
    // because exception will be thrown
    reader.BaseStream.Seek(0, SeekOrigin.Begin); 
    var body = await reader.ReadToEndAsync();

    // Do stuff
}

You'll need to take your model binding out of the method parameters, and manually bind yourself:

public async Task<IActionResult> Index()
{
    using var reader = new StreamReader(HttpContext.Request.Body);

    // You shouldn't need this line anymore.
    // reader.BaseStream.Seek(0, SeekOrigin.Begin);

    // You now have the body string raw
    var body = await reader.ReadToEndAsync();

    // As well as a bound model
    var request = JsonConvert.DeserializeObject<WebhookRequest>(body);
}

It's easy to forget this, and I've solved this issue before in the past, but just now had to relearn the solution. Hopefully my answer here will be a good reminder for myself...

I know it's a really old question, but it's the first result on duckduckgo, so I wanted to share what I think it's a better and more modern solution.

You can use background-blend-mode property to achieve a greyscale image:

#something {
  background-color: #fff;
  background-image: url("yourimage");
  background-blend-mode: luminosity;
}

If you want to remove the effect, just change the blend-mode to initial.

You may need to play a little bit with the background-color if this element is over something with a background. What I've found is that the greyscale does not depend on the actual color but on the alpha value. So, if you have a blue background on the parent, set the same background on #something.

You can also use two images, one with color and the other without and set both as background and play with other blend modes.

https://www.w3schools.com/cssref/pr_background-blend-mode.asp

It won't work on Edge though.

EDIT: I've miss the "fade" part of the question.

If you wan't to make it fade from/to grayscale, you can use a css transition on the background color changeing it's alpha value:

#something {
  background-color: rgba(255,255,255,1);
  background-image: url("yourimage");
  background-blend-mode: luminosity;
  transition: background-color 1s ease-out;
}
#something:hover {
  background-color: rgba(255,255,255,0);
}

I'm also adding a codepen example for completeness https://codepen.io/anon/pen/OBKKVZ

if you have a the input password in a variable and you want to match exactly 123456 then anchors will help you:

/^123456$/

in perl the test for matching the password would be something like

print "MATCH_OK" if ($input_pass=~/^123456$/);

EDIT:

bart kiers is right tho, why don't you use a strcmp() for this? every language has it in its own way

as a second thought, you may want to consider a safer authentication mechanism :)

$('.toggle img').data('block', 'something');
$('.toggle img').attr('src', 'something.jpg');

Use jQuery.data and jQuery.attr.

I'm showing them to you separately for the sake of understanding.

Even though the proposed solution works, it might not be the best solution for every case because based on the documentation for ViewTreeObserver.OnGlobalLayoutListener

Interface definition for a callback to be invoked when the global layout state or the visibility of views within the view tree changes.

which means it gets called many times and not always the view is measured (it has its height and width determined)

An alternative is to use ViewTreeObserver.OnPreDrawListener which gets called only when the view is ready to be drawn and has all of its measurements.

final TextView tv = (TextView)findViewById(R.id.image_test);
ViewTreeObserver vto = tv.getViewTreeObserver();
vto.addOnPreDrawListener(new OnPreDrawListener() {

    @Override
    public void onPreDraw() {
        tv.getViewTreeObserver().removeOnPreDrawListener(this);
        // Your view will have valid height and width at this point
        tv.getHeight();
        tv.getWidth();
    }

});

As stated in PostgreSQL docs here:

The SQL CASE expression is a generic conditional expression, similar to if/else statements in other programming languages.

Code snippet specifically answering your question:

SELECT field1, field2,
  CASE
    WHEN field1>0 THEN field2/field1
    ELSE 0
  END 
  AS field3
FROM test

complex simplicity

ini file

test.ini

[section1]
name1=value1
name2=value2
[section2]
name1=value_1
  name2  =  value_2

bash script with read and execute

/bin/parseini

#!/bin/bash

set +a
while read p; do
  reSec='^\[(.*)\]$'
  #reNV='[ ]*([^ ]*)+[ ]*=(.*)'     #Remove only spaces around name
  reNV='[ ]*([^ ]*)+[ ]*=[ ]*(.*)'  #Remove spaces around name and spaces before value
  if [[ $p =~ $reSec ]]; then
      section=${BASH_REMATCH[1]}
  elif [[ $p =~ $reNV ]]; then
    sNm=${section}_${BASH_REMATCH[1]}
    sVa=${BASH_REMATCH[2]}
    set -a
    eval "$(echo "$sNm"=\""$sVa"\")"
    set +a
  fi
done < $1

then in another script I source the results of the command and can use any variables within

test.sh

#!/bin/bash

source parseini test.ini

echo $section2_name2

finally from command line the output is thus

# ./test.sh 
value_2

You should prefer the outer version over the inner version. This is just a specific version of the rule, move anything outside the loop that you can move outside the loop. Depending on the IL compiler and JIT compiler your two versions may or may not end up with different performance characteristics.

On another note you should probably look at float.TryParse or Convert.ToFloat.

import urllib
from bs4 import BeautifulSoup

url = "https://www.yahoo.com"
html = urllib.urlopen(url).read()
soup = BeautifulSoup(html)

# kill all script and style elements
for script in soup(["script", "style"]):
    script.extract()    # rip it out

# get text
text = soup.get_text()

# break into lines and remove leading and trailing space on each
lines = (line.strip() for line in text.splitlines())
# break multi-headlines into a line each
chunks = (phrase.strip() for line in lines for phrase in line.split("  "))
# drop blank lines
text = '\n'.join(chunk for chunk in chunks if chunk)

print(text.encode('utf-8'))

Your answer for a non manual creation of an app.config is Visual Studio Project Properties/Settings tab.

When you add a setting and save, your app.config will be created automatically. At this point a bunch of code is generated in a {yourclasslibrary.Properties} namespace containing properties corresponding to your settings. The settings themselves will be placed in the app.config's applicationSettings settings.

 <configSections>
    <sectionGroup name="applicationSettings" type="System.Configuration.ApplicationSettingsGroup, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" >
        <section name="ClassLibrary.Properties.Settings" type="System.Configuration.ClientSettingsSection, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
    </sectionGroup>
</configSections>
<applicationSettings>
    <ClassLibrary.Properties.Settings>
        <setting name="Setting1" serializeAs="String">
            <value>3</value>
        </setting>
    </BookOneGenerator.Properties.Settings>
</applicationSettings>

If you added an Application scoped setting called Setting1 = 3 then a property called Setting1 will be created. These properties are becoming at compilation part of the binary and they are decorated with a DefaultSettingValueAttribute which is set to the value you specified at development time.

     [ApplicationScopedSetting]
    [DebuggerNonUserCode]
    [DefaultSettingValue("3")]
    public string Setting1
    {
        get
        {
            return (string)this["Setting1"];
        }
    }

Thus as in your class library code you make use of these properties if a corresponding setting doesn't exist in the runtime config file, it will fallback to use the default value. That way the application won't crash for lacking a setting entry, which is very confusing first time when you don't know how these things work. Now, you're asking yourself how can specify our own new value in a deployed library and avoid the default setting value be used?

That will happen when we properly configure the executable's app.config. Two steps. 1. we make it aware that we will have a settings section for that class library and 2. with small modifications we paste the class library's config file in the executable config. (there's a method where you can keep the class library config file external and you just reference it from the executable's config.

So, you can have an app.config for a class library but it's useless if you don't integrate it properly with the parent application. See here what I wrote sometime ago: link

You can provide your own sort function to list.sort():

The sort() method takes optional arguments for controlling the comparisons.

• cmp specifies a custom comparison function of two arguments (list items) which should return a negative, zero or positive number depending on whether the first argument is considered smaller than, equal to, or larger than the second argument: cmp=lambda x,y: cmp(x.lower(), y.lower()). The default value is None.

• key specifies a function of one argument that is used to extract a comparison key from each list element: key=str.lower. The default value is None.

• reverse is a boolean value. If set to True, then the list elements are sorted as if each comparison were reversed.

In general, the key and reverse conversion processes are much faster than specifying an equivalent cmp function. This is because cmp is called multiple times for each list element while key and reverse touch each element only once.

Try below:

SELECT CONVERT(VARCHAR(20), GETDATE(), 101)

API is like the building blocks of some puzzling game that a child plays with to join blocks in different shapes and build something they can think of.

SDK, on the other hand, is a proper workshop where all of the development tools are available, rather than pre-shaped building blocks. In a workshop you have the actual tools and you are not limited to blocks, and can therefore make your own blocks, or can create something without any blocks to begin with.

coding without an SDK or API is like making everything from scratch without a workshop - you have to even make your own tools

This is my solution to the problem

const _ = require('lodash');

var objects = [{ 'x': 1, 'y': 2, 'z':3, a:{b:1, c:2, d:{n:0}}, p:[1, 2, 3]  }, { 'x': 2, 'y': 1, z:3, a:{b:2, c:2,d:{n:1}}, p:[1,3], m:3  }];

const diffFn=(a,b, path='')=>_.reduce(a, function(result, value, key) {

    if(_.isObjectLike(value)){
      if(_.isEqual(value, b[key])){
        return result;
      }else{

return result.concat(diffFn(value, b[key], path?(`${path}.${key}`):key))
      }
    }else{
return _.isEqual(value, b[key]) ?
        result : result.concat(path?(`${path}.${key}`):key);
    }
    
}, []);

const diffKeys1=diffFn(objects[0], objects[1])
const diffKeys2=diffFn(objects[1], objects[0])
const diffKeys=_.union(diffKeys1, diffKeys2)
const res={};

_.forEach(diffKeys, (key)=>_.assign(res, {[key]:{ old: _.get(objects[0], key), new:_.get(objects[1], key)} }))

res
/*
Returns
{
  x: { old: 1, new: 2 },
  y: { old: 2, new: 1 },
  'a.b': { old: 1, new: 2 },
  'a.d.n': { old: 0, new: 1 },
  'p.1': { old: 2, new: 3 },
  'p.2': { old: 3, new: undefined },
  m: { old: undefined, new: 3 }
}
*/

Maybe I'm being dumb, but isn't table the obvious solution here?

<div class="parent">
    <div class="fixed">
    <div class="stretchToFit">
</div>

.parent{ display: table; width 100%; }
.fixed { display: table-cell; width: 150px; }
.stretchToFit{ display: table-cell; vertical-align: top}

Another way that I've figured out in chrome is even simpler, but man is it a hack!

.fixed{ 
   float: left
}
.stretchToFit{
   display: table-cell;
   width: 1%;
}

This alone should fill the rest of the line horizontally, as table-cells do. However, you get some strange issues with it going over 100% of its parent, setting the width to a percent value fixes it though.

Part One - Polyfill

For browsers that haven't implemented it, a polyfill for array.find. Courtesy of MDN.

if (!Array.prototype.find) {
  Array.prototype.find = function(predicate) {
    if (this == null) {
      throw new TypeError('Array.prototype.find called on null or undefined');
    }
    if (typeof predicate !== 'function') {
      throw new TypeError('predicate must be a function');
    }
    var list = Object(this);
    var length = list.length >>> 0;
    var thisArg = arguments[1];
    var value;

    for (var i = 0; i < length; i++) {
      value = list[i];
      if (predicate.call(thisArg, value, i, list)) {
        return value;
      }
    }
    return undefined;
  };
}

Part Two - Interface

You need to extend the open Array interface to include the find method.

interface Array<T> {
    find(predicate: (search: T) => boolean) : T;
}

When this arrives in TypeScript, you'll get a warning from the compiler that will remind you to delete this.

Part Three - Use it

The variable x will have the expected type... { id: number }

var x = [{ "id": 1 }, { "id": -2 }, { "id": 3 }].find(myObj => myObj.id < 0);

foreach (DictionaryEntry entry in Hashtable)
{
    datagridviewTZ.Rows.Add(entry.Key.ToString(), entry.Value.ToString());
}

Let us think what an interpreter actually is: it's a piece of code that stores values in memory and lets the instructions in a program that it interprets access those values by their names, which are specified inside these instructions. So, the big job of an interpreter is to shape the rules of how we should use the names in those instructions to access the values that the interpreter stores.

On encountering "my", the interpreter creates a lexical variable: a named value that the interpreter can access only while it executes a block, and only from within that syntactic block. On encountering "our", the interpreter makes a lexical alias of a package variable: it binds a name, which the interpreter is supposed from then on to process as a lexical variable's name, until the block is finished, to the value of the package variable with the same name.

The effect is that you can then pretend that you're using a lexical variable and bypass the rules of 'use strict' on full qualification of package variables. Since the interpreter automatically creates package variables when they are first used, the side effect of using "our" may also be that the interpreter creates a package variable as well. In this case, two things are created: a package variable, which the interpreter can access from everywhere, provided it's properly designated as requested by 'use strict' (prepended with the name of its package and two colons), and its lexical alias.

Sources:

• http://perldoc.perl.org/functions/our.html
• http://perldoc.perl.org/perlsub.html#Private-Variables-via-my()

A good example where to subscribe a setInterval(), and use a clearInterval() to stop the forever loop:

function myTimer() {
    console.log(' each 1 second...');
}

var myVar = setInterval(myTimer, 1000);

call this line to stop the loop:

 clearInterval(myVar);

Case: using SO Windows, try:

set ANDROID_HOME=C:\\android-sdk-windows
set PATH=%PATH%;%ANDROID_HOME%\tools;%ANDROID_HOME%\platform-tools

more in: http://spring.io/guides/gs/android/

Case: you don't have platform-tools:

cordova platforms list
cordova platforms add <Your_platform, example: Android>

Firstly, follow Energya's instruction:

pip install jupyter_contrib_nbextensions
jupyter contrib nbextension install --user
pip install jupyter_nbextensions_configurator
jupyter nbextensions_configurator enable --user

Second is the key: After opening jupiter notebook, click the Nbextension tab. Now Search "colla" from the searching tool provided by Nbextension(not by the web browser), then you will find something called "Collapsible Headings"

This is what you want!

You could descendingly order the tabele by id and limit the number of results to one:

SELECT id FROM tablename ORDER BY id DESC LIMIT 1

BUT: ORDER BY rearranges the entire table for this request. So if you have a lot of data and you need to repeat this operation several times, I would not recommend this solution.

What you should do is create a service to share data between controllers.

Nice tutorial https://www.youtube.com/watch?v=HXpHV5gWgyk

I recommend not using WebClient.DownloadString. This is because (at least in .NET 3.5) DownloadString is not smart enough to use/remove the BOM, should it be present. This can result in the BOM () incorrectly appearing as part of the string when UTF-8 data is returned (at least without a charset) - ick!

Instead, this slight variation will work correctly with BOMs:

string ReadTextFromUrl(string url) {
    // WebClient is still convenient
    // Assume UTF8, but detect BOM - could also honor response charset I suppose
    using (var client = new WebClient())
    using (var stream = client.OpenRead(url))
    using (var textReader = new StreamReader(stream, Encoding.UTF8, true)) {
        return textReader.ReadToEnd();
    }
}

Refer to the ASP.NET page lifecycle to help find the right event to override. It really depends what you want to do. But yes, there is an unload event.

    protected override void OnUnload(EventArgs e)
    {
        base.OnUnload(e);

        // your code
    }

But just remember (from the above link): During the unload stage, the page and its controls have been rendered, so you cannot make further changes to the response stream. If you attempt to call a method such as the Response.Write method, the page will throw an exception.

The Tuple approach :

This solution provides a strict FixedLengthArray (ak.a. SealedArray) type signature based in Tuples.

Syntax example :

// Array containing 3 strings
let foo : FixedLengthArray<[string, string, string]> 

This is the safest approach, considering it prevents accessing indexes out of the boundaries.

Implementation :

type ArrayLengthMutationKeys = 'splice' | 'push' | 'pop' | 'shift' | 'unshift' | number
type ArrayItems<T extends Array<any>> = T extends Array<infer TItems> ? TItems : never
type FixedLengthArray<T extends any[]> =
  Pick<T, Exclude<keyof T, ArrayLengthMutationKeys>>
  & { [Symbol.iterator]: () => IterableIterator< ArrayItems<T> > }

Tests :

var myFixedLengthArray: FixedLengthArray< [string, string, string]>

// Array declaration tests
myFixedLengthArray = [ 'a', 'b', 'c' ]  // ? OK
myFixedLengthArray = [ 'a', 'b', 123 ]  // ? TYPE ERROR
myFixedLengthArray = [ 'a' ]            // ? LENGTH ERROR
myFixedLengthArray = [ 'a', 'b' ]       // ? LENGTH ERROR

// Index assignment tests 
myFixedLengthArray[1] = 'foo'           // ? OK
myFixedLengthArray[1000] = 'foo'        // ? INVALID INDEX ERROR

// Methods that mutate array length
myFixedLengthArray.push('foo')          // ? MISSING METHOD ERROR
myFixedLengthArray.pop()                // ? MISSING METHOD ERROR

// Direct length manipulation
myFixedLengthArray.length = 123         // ? READ-ONLY ERROR

// Destructuring
var [ a ] = myFixedLengthArray          // ? OK
var [ a, b ] = myFixedLengthArray       // ? OK
var [ a, b, c ] = myFixedLengthArray    // ? OK
var [ a, b, c, d ] = myFixedLengthArray // ? INVALID INDEX ERROR

(*) This solution requires the noImplicitAny typescript configuration directive to be enabled in order to work (commonly recommended practice)

The Array(ish) approach :

This solution behaves as an augmentation of the Array type, accepting an additional second parameter(Array length). Is not as strict and safe as the Tuple based solution.

Syntax example :

let foo: FixedLengthArray<string, 3> 

Keep in mind that this approach will not prevent you from accessing an index out of the declared boundaries and set a value on it.

Implementation :

type ArrayLengthMutationKeys = 'splice' | 'push' | 'pop' | 'shift' |  'unshift'
type FixedLengthArray<T, L extends number, TObj = [T, ...Array<T>]> =
  Pick<TObj, Exclude<keyof TObj, ArrayLengthMutationKeys>>
  & {
    readonly length: L 
    [ I : number ] : T
    [Symbol.iterator]: () => IterableIterator<T>   
  }

Tests :

var myFixedLengthArray: FixedLengthArray<string,3>

// Array declaration tests
myFixedLengthArray = [ 'a', 'b', 'c' ]  // ? OK
myFixedLengthArray = [ 'a', 'b', 123 ]  // ? TYPE ERROR
myFixedLengthArray = [ 'a' ]            // ? LENGTH ERROR
myFixedLengthArray = [ 'a', 'b' ]       // ? LENGTH ERROR

// Index assignment tests 
myFixedLengthArray[1] = 'foo'           // ? OK
myFixedLengthArray[1000] = 'foo'        // ? SHOULD FAIL

// Methods that mutate array length
myFixedLengthArray.push('foo')          // ? MISSING METHOD ERROR
myFixedLengthArray.pop()                // ? MISSING METHOD ERROR

// Direct length manipulation
myFixedLengthArray.length = 123         // ? READ-ONLY ERROR

// Destructuring
var [ a ] = myFixedLengthArray          // ? OK
var [ a, b ] = myFixedLengthArray       // ? OK
var [ a, b, c ] = myFixedLengthArray    // ? OK
var [ a, b, c, d ] = myFixedLengthArray // ? SHOULD FAIL

0: U

1: n

2: i

3: v

4: e

5: r

6: s

7: i

8: t

9: y

Start index is inclusive

End index is exclusive

Javadoc link

This class automatically polls the counter every 1 seconds and is also thread safe:

public class ProcessorUsage
{
    const float sampleFrequencyMillis = 1000;

    protected object syncLock = new object();
    protected PerformanceCounter counter;
    protected float lastSample;
    protected DateTime lastSampleTime;

    /// <summary>
    /// 
    /// </summary>
    public ProcessorUsage()
    {
        this.counter = new PerformanceCounter("Processor", "% Processor Time", "_Total", true);
    }

    /// <summary>
    /// 
    /// </summary>
    /// <returns></returns>
    public float GetCurrentValue()
    {
        if ((DateTime.UtcNow - lastSampleTime).TotalMilliseconds > sampleFrequencyMillis)
        {
            lock (syncLock)
            {
                if ((DateTime.UtcNow - lastSampleTime).TotalMilliseconds > sampleFrequencyMillis)
                {
                    lastSample = counter.NextValue();
                    lastSampleTime = DateTime.UtcNow;
                }
            }
        }

        return lastSample;
    }
}

This seems because you have already uploaded APK file of version 3 to Google Play Store. And again you are uploading apk with same version. So this issue has been occurred.

So for solution you need to change your version name and version code (increment with 1)and run application once and after export it upload to Google Play.

Using java 8:

public static <T> List<T> removeDuplicates(List<T> list) {
    return list.stream().collect(Collectors.toSet()).stream().collect(Collectors.toList());
}

In addition to all the above ways to convert the text, if you simply use 'strings', it will make the output on separate lines by default. With the added benefit that it may also prevent any chars that may scramble your terminal from appearing.

Both output in one command:

strings /proc//cmdline /proc//environ

The real question is... is there a way to see the real command line of a process in Linux that has been altered so that the cmdline contains the altered text instead of the actual command that was run.

Following solution also provide array of subset which provide specific sum (here sum = 9)

array = [1, 3, 4, 2, 7, 8, 9]

(0..array.size).map { |i| array.combination(i).to_a.select { |a| a.sum == 9 } }.flatten(1)

return array of subsets which return sum of 9

 => [[9], [1, 8], [2, 7], [3, 4, 2]] 

If the case is:

n=int(input())

Instead of -> for i in n: -> gives error- 'int' object is not iterable

Use -> for i in range(0,n): -> works fine..!

Show all tags on current HEAD (or commit)

git tag --points-at HEAD

Given your comment to the question (where you say that executing the install for a single package works as expected), I would suggest looping over your requirement file. In bash:

#!/bin/sh
while read p; do
  pip install $p
done < requirements.pip

HTH!

$string = str_replace(array("\n", "\r"), ' ', $string);

To use the math-functions you have to import Cocoa

You can see the other defined mathematical functions in the following way. Make a Cmd-Click on the function name sqrt and you enter the file with all other global math functions and constanst.

A small snippet of the file

...
func pow(_: CDouble, _: CDouble) -> CDouble

func sqrtf(_: CFloat) -> CFloat
func sqrt(_: CDouble) -> CDouble

func erff(_: CFloat) -> CFloat
...
var M_LN10: CDouble { get } /* loge(10)       */
var M_PI: CDouble { get } /* pi             */
var M_PI_2: CDouble { get } /* pi/2           */
var M_SQRT2: CDouble { get } /* sqrt(2)        */
...

I think you need to run that .msi to install the dlls. After I ran that .msi I can go to (VS 2012) Add References > Assemblies > Extensions and all of the Microsoft.Office.Interop dlls are there.

On my computer the dlls are found in "c:\Program Files(x86)\Microsoft Visual Studio 12.0\Visual Studio Tools for Office\PIA" so you could check in a similar/equivalent directory on yours just to make sure they're not there?

For me this was caused by the Build target having been rewritten to not output the dll. Removing this to fall back on the default Build target fixed the issue.

Check: http://php.net/manual/en/function.mysql-affected-rows.php

maybe this can solve the problem: matplotlib, define size of a grid on a plot

ax.grid(True, which='both')

The truth is that the grid is working, but there's only one v-grid in 00:00 and no grid in others. I meet the same problem that there's only one grid in Nov 1 among many days.

In Swift 4.1 and Xcode 9.4.1

In iOS 11 this single line is enough:

detailsSubView.layer.maskedCorners = [.layerMinXMinYCorner, .layerMaxXMinYCorner]//Set your view here

See the complete code:

//In viewDidLoad
if #available(iOS 11.0, *) {
        detailsSubView.clipsToBounds = false
        detailsSubView.layer.cornerRadius = 10
        detailsSubView.layer.maskedCorners = [.layerMinXMinYCorner, .layerMaxXMinYCorner]
} else {
      //For lower versions
}

But for lower versions

let rectShape = CAShapeLayer()
    rectShape.bounds = detailsSubView.frame
    rectShape.position = detailsSubView.center
    rectShape.path = UIBezierPath(roundedRect: detailsSubView.bounds,    byRoundingCorners: [.topLeft , .topRight], cornerRadii: CGSize(width: 20, height: 20)).cgPath
    detailsSubView.layer.mask = rectShape

Complete code is.

if #available(iOS 11.0, *) {
    detailsSubView.clipsToBounds = false
    detailsSubView.layer.cornerRadius = 10
    detailsSubView.layer.maskedCorners = [.layerMinXMinYCorner, .layerMaxXMinYCorner]
} else {
    let rectShape = CAShapeLayer()
    rectShape.bounds = detailsSubView.frame
    rectShape.position = detailsSubView.center
    rectShape.path = UIBezierPath(roundedRect: detailsSubView.bounds,    byRoundingCorners: [.topLeft , .topRight], cornerRadii: CGSize(width: 20, height: 20)).cgPath
    detailsSubView.layer.mask = rectShape
}

If you are using AutoResizing in storyboard write this code in viewDidLayoutSubviews().

override func viewDidLayoutSubviews() {
    super.viewDidLayoutSubviews()

    if #available(iOS 11.0, *) {
        detailsSubView.clipsToBounds = false
        detailsSubView.layer.cornerRadius = 10
        detailsSubView.layer.maskedCorners = [.layerMinXMinYCorner, .layerMaxXMinYCorner]
    } else {
        let rectShape = CAShapeLayer()
        rectShape.bounds = detailsSubView.frame
        rectShape.position = detailsSubView.center
        rectShape.path = UIBezierPath(roundedRect: detailsSubView.bounds,    byRoundingCorners: [.topLeft , .topRight], cornerRadii: CGSize(width: 20, height: 20)).cgPath
        detailsSubView.layer.mask = rectShape
    }
}

As of npm@5, the npm cache self-heals from corruption issues and data extracted from the cache is guaranteed to be valid. If you want to make sure everything is consistent, use npm cache verify instead. On the other hand, if you're debugging an issue with the installer, you can use npm install --cache /tmp/empty-cache to use a temporary cache instead of nuking the actual one.

If you're sure you want to delete the entire cache, rerun:

npm cache clean --force

A complete log of this run can be found in /Users/USERNAME/.npm/_logs/2019-01-08T21_29_30_811Z-debug.log.

Before answering, let's add some background, explaining what this HEAD is.

First of all what is HEAD?

HEAD is simply a reference to the current commit (latest) on the current branch.
There can only be a single HEAD at any given time (excluding git worktree).

The content of HEAD is stored inside .git/HEAD and it contains the 40 bytes SHA-1 of the current commit.

detached HEAD

If you are not on the latest commit - meaning that HEAD is pointing to a prior commit in history it's called detached HEAD.

On the command line, it will look like this - SHA-1 instead of the branch name since the HEAD is not pointing to the tip of the current branch:

A few options on how to recover from a detached HEAD:

git checkout

git checkout <commit_id>
git checkout -b <new branch> <commit_id>
git checkout HEAD~X // x is the number of commits t go back

This will checkout new branch pointing to the desired commit.
This command will checkout to a given commit.
At this point, you can create a branch and start to work from this point on.

# Checkout a given commit.
# Doing so will result in a `detached HEAD` which mean that the `HEAD`
# is not pointing to the latest so you will need to checkout branch
# in order to be able to update the code.
git checkout <commit-id>

# Create a new branch forked to the given commit
git checkout -b <branch name>

git reflog

You can always use the reflog as well.
git reflog will display any change which updated the HEAD and checking out the desired reflog entry will set the HEAD back to this commit.

Every time the HEAD is modified there will be a new entry in the reflog

git reflog
git checkout HEAD@{...}

This will get you back to your desired commit

git reset --hard <commit_id>

"Move" your HEAD back to the desired commit.

# This will destroy any local modifications.
# Don't do it if you have uncommitted work you want to keep.
git reset --hard 0d1d7fc32

# Alternatively, if there's work to keep:
git stash
git reset --hard 0d1d7fc32
git stash pop
# This saves the modifications, then reapplies that patch after resetting.
# You could get merge conflicts if you've modified things which were
# changed since the commit you reset to.

• Note: (Since Git 2.7) you can also use the git rebase --no-autostash as well.

git revert <sha-1>

"Undo" the given commit or commit range.
The reset command will "undo" any changes made in the given commit.
A new commit with the undo patch will be committed while the original commit will remain in the history as well.

# Add a new commit with the undo of the original one.
# The <sha-1> can be any commit(s) or commit range
git revert <sha-1>

This schema illustrates which command does what.
As you can see there, reset && checkout modify the HEAD.

Use stringi package and stri_length function

> stri_length(c("ala ma kota","ABC",NA))
[1] 11  3 NA

Why? Because it is the FASTEST among presented solutions :)

require(microbenchmark)
require(stringi)
require(stringr)
x <- c(letters,NA,paste(sample(letters,2000,TRUE),collapse=" "))
microbenchmark(nchar(x),str_length(x),stri_length(x))
Unit: microseconds
           expr    min     lq  median      uq     max neval
       nchar(x) 11.868 12.776 13.1590 13.6475  41.815   100
  str_length(x) 30.715 33.159 33.6825 34.1360 173.400   100
 stri_length(x)  2.653  3.281  4.0495  4.5380  19.966   100

and also works fine with NA's

nchar(NA)
## [1] 2
stri_length(NA)
## [1] NA

I needed my ASP.NET drop down list to take up all available space, and this is all I put in the CSS and it is working in Firefox and IE11:

width: 100%

I had to add the CSS class into the asp:DropDownList element

rmdir /S /Q %DIRNAME%

Use LinqToObject : contacts.AsEnumerable()

var items = from c in contacts.AsEnumerable()
            select new ListItem
            {
                Value = c.ContactId.ToString(),
                Text = c.Name
            };

As the main question:

Anybody know why this is not allowed?

is still not answered, I did a quick search and found a relatively new addition from a MySQL developer at MySQL Bugs:

[17 Mar 2017 15:11] Ståle Deraas

Posted by developer:

This is indeed a valid feature request, and at first glance it might seem trivial to add. But TEXT/BLOBS values are not stored directly in the record buffer used for reading/updating tables. So it is a bit more complex to assign default values for them.

This is no definite answer, but at least a starting point for the why question.

In the mean time, I'll just code around it and either make the column nullable or explicitly assign a (default '') value for each insert from the application code...

To add to the accepted answer:

Bear in mind that set -e sometimes is not enough, specially if you have pipes.

For example, suppose you have this script

#!/bin/bash
set -e 
./configure  > configure.log
make

... which works as expected: an error in configure aborts the execution.

Tomorrow you make a seemingly trivial change:

#!/bin/bash
set -e 
./configure  | tee configure.log
make

... and now it does not work. This is explained here, and a workaround (Bash only) is provided:

#!/bin/bash
set -e 
set -o pipefail

./configure  | tee configure.log
make

This is probably one of the fastest way to remove permanently the duplicates from an array 10x times faster than the most functions here.& 78x faster in safari

function toUnique(a,b,c){               //array,placeholder,placeholder
 b=a.length;while(c=--b)while(c--)a[b]!==a[c]||a.splice(c,1)
}

1. Test: http://jsperf.com/wgu
2. Demo: http://jsfiddle.net/46S7g/
3. More: https://stackoverflow.com/a/25082874/2450730

if you can't read the code above ask, read a javascript book or here are some explainations about shorter code. https://stackoverflow.com/a/21353032/2450730

I use Visual Studio git plugin, and I have some websites running on IIS I wanted to move. A simple way that worked for me:

1. Close Visual Studio.

2. Move the code (including git folder, etc)

3. Click on the solution file from the new location

This refreshes the mapping to the new location, using the existing local git files that were moved. Once i was back in Visual Studio, my Team Explorer window showed the repos in the new location.

You can use the following below with document.title = 'Home Page'

import React from 'react'
import { Component } from 'react-dom'


class App extends Component{
  componentDidMount(){
    document.title = "Home Page"
  }

  render(){
    return(
      <p> Title is now equal to Home Page </p>
    )
  }
}

ReactDOM.render(
  <App />,
  document.getElementById('root')
);

or You can use this npm package npm i react-document-title

import React from 'react'
import { Component } from 'react-dom'
import DocumentTitle from 'react-document-title';


class App extends Component{


  render(){
    return(
      <DocumentTitle title='Home'>
        <h1>Home, sweet home.</h1>
      </DocumentTitle>
    )
  }
}

ReactDOM.render(
  <App />,
  document.getElementById('root')
);

Happy Coding!!!

• .py - Regular script
• .py3 - (rarely used) Python3 script. Python3 scripts usually end with ".py" not ".py3", but I have seen that a few times
• .pyc - compiled script (Bytecode)
• .pyo - optimized pyc file (As of Python3.5, Python will only use pyc rather than pyo and pyc)
• .pyw - Python script to run in Windowed mode, without a console; executed with pythonw.exe
• .pyx - Cython src to be converted to C/C++
• .pyd - Python script made as a Windows DLL
• .pxd - Cython script which is equivalent to a C/C++ header
• .pxi - MyPy stub
• .pyi - Stub file (PEP 484)
• .pyz - Python script archive (PEP 441); this is a script containing compressed Python scripts (ZIP) in binary form after the standard Python script header
• .pywz - Python script archive for MS-Windows (PEP 441); this is a script containing compressed Python scripts (ZIP) in binary form after the standard Python script header
• .py[cod] - wildcard notation in ".gitignore" that means the file may be ".pyc", ".pyo", or ".pyd".
• .pth - a path configuration file; its contents are additional items (one per line) to be added to sys.path. See site module.

A larger list of additional Python file-extensions (mostly rare and unofficial) can be found at http://dcjtech.info/topic/python-file-extensions/

If you don't want to use the url helper, you can get the same results by using the following variable:

$this->config->config['base_url']

It will return the base url for you with no extra steps required.

Sometimes, it may help switching off AllowAutoRedirect and setting both login POST and page GET requests the same user agent.

request.UserAgent = userAgent;
request.AllowAutoRedirect = false;

You're almost there. Although I agree with @Alex Young answer about using props for that, you simply need a reference to the instance before trying to spy on the method.

describe('my sweet test', () => {
 it('clicks it', () => {
    const app = shallow(<App />)
    const instance = app.instance()
    const spy = jest.spyOn(instance, 'myClickFunc')

    instance.forceUpdate();    

    const p = app.find('.App-intro')
    p.simulate('click')
    expect(spy).toHaveBeenCalled()
 })
})

Docs: http://airbnb.io/enzyme/docs/api/ShallowWrapper/instance.html

Apparently you want:

sudo /Library/StartupItems/MySQLCOM/MySQLCOM stop

Have a further read in Jeez People, Stop Fretting Over Installing RMagic.

As an alternative which saves from full scanning each table twice and also gives you an easy way to tell which table had more rows with a combination of values than the other:

SELECT col1
     , col2
     -- (include all columns that you want to compare)
     , COUNT(src1) CNT1
     , COUNT(src2) CNT2
  FROM (SELECT a.col1
             , a.col2
             -- (include all columns that you want to compare)
             , 1 src1
             , TO_NUMBER(NULL) src2
          FROM tab_a a
         UNION ALL
        SELECT b.col1
             , b.col2
             -- (include all columns that you want to compare)
             , TO_NUMBER(NULL) src1
             , 2 src2
          FROM tab_b b
       )
 GROUP BY col1
        , col2
HAVING COUNT(src1) <> COUNT(src2) -- only show the combinations that don't match

Credit goes here: http://asktom.oracle.com/pls/apex/f?p=100:11:0::::P11_QUESTION_ID:1417403971710

We have recently started looking into RFID solutions at my work place and we found a cheap solution for testing purposes.

One of the units from here:

http://www.sdid.com/products.shtml

Plugs into any windows mobile device with an SD slot and allows reading / writing. There is also a development kit to get you on your way with your own apps.

Hope this helps

Step 1 is always to first determine where the problem lies. Your title and most of your question seem to suggest that you're running into quite a low length limit on the length of a string in JavaScript / on browsers, an improbably low limit. You're not. Consider:

var str;

document.getElementById('theButton').onclick = function() {
  var build, counter;

  if (!str) {
    str = "0123456789";
    build = [];
    for (counter = 0; counter < 900; ++counter) {
      build.push(str);
    }
    str = build.join("");
  }
  else {
    str += str;
  }
  display("str.length = " + str.length);
};

Live copy

Repeatedly clicking the relevant button keeps making the string longer. With Chrome, Firefox, Opera, Safari, and IE, I've had no trouble with strings more than a million characters long:

str.length = 9000
str.length = 18000
str.length = 36000
str.length = 72000
str.length = 144000
str.length = 288000
str.length = 576000
str.length = 1152000
str.length = 2304000
str.length = 4608000
str.length = 9216000
str.length = 18432000

...and I'm quite sure I could got a lot higher than that.

So it's nothing to do with a length limit in JavaScript. You haven't show your code for sending the data to the server, but most likely you're using GET which means you're running into the length limit of a GET request, because GET parameters are put in the query string. Details here.

You need to switch to using POST instead. In a POST request, the data is in the body of the request rather than in the URL, and can be very, very large indeed.

I had to replace new lines with br

string newString = oldString.Replace("\n", "<br />");

or if you use xml

<asp:Label ID="Label1" runat="server" Text='<%# ShowLineBreaks(Eval("Comments")) %>'></asp:Label>

Then in code behind

public string ShowLineBreaks(object text)
{
    return (text.ToString().Replace("\n", "<br/>"));
}

Swift 4: Another example using Unit Tests which only works with ===

Note: Test below fails with ==, works with ===

func test_inputTextFields_Delegate_is_ViewControllerUnderTest() {

        //instantiate viewControllerUnderTest from Main storyboard
        let storyboard = UIStoryboard(name: "Main", bundle: nil)
        viewControllerUnderTest = storyboard.instantiateViewController(withIdentifier: "StoryBoardIdentifier") as! ViewControllerUnderTest 
        let _ = viewControllerUnderTest.view

        XCTAssertTrue(viewControllerUnderTest.inputTextField.delegate === viewControllerUnderTest) 
    }

And the class being

class ViewControllerUnderTest: UIViewController, UITextFieldDelegate {
    @IBOutlet weak var inputTextField: UITextField!

    override func viewDidLoad() {
        super.viewDidLoad()
        inputTextField.delegate = self
    }
}

The error in Unit Tests if you use == is, Binary operator '==' cannot be applied to operands of type 'UITextFieldDelegate?' and 'ViewControllerUnderTest!'

Shows the Computer Name, Use a Button to call it

Dim strHostName As String

    strHostName = System.Net.Dns.GetHostName().

    MsgBox(strHostName)

Shows the User Name, Use a Button to call it

If TypeOf My.User.CurrentPrincipal Is Security.Principal.WindowsPrincipal Then

        Dim parts() As String = Split(My.User.Name, "\")

        Dim username As String = parts(1)

        MsgBox(username)

   End If

For IP Address its little complicated, But I try to explain as much as I can. First write the next code, before Form1_Load but after import section

Public Class Form1

Dim mem As String

Private Sub GetIPAddress()

    Dim strHostName As String
    Dim strIPAddress As String
    strHostName = System.Net.Dns.GetHostName()
    strIPAddress = System.Net.Dns.GetHostByName(strHostName).AddressList(0).ToString()

    mem = strIPAddress
    MessageBox.Show("IP Address: " & strIPAddress)

End Sub

Then in Form1_Load Section just call it

GetIPAddress()

Result: On form load it will show a msgbox along with the IP address, for put into Label1.text or some where else play with the code.

Application.Exit() does the trick too: any forms you have can still cancel this for instance if you want to present a save changes dialog.

i think doing some like this.

void printchar(char c, int n){
     int i;
     for(i=0;i<n;i++)
         print("%c",c);
}

printchar("*",10);

SELECT * FROM table WHERE field1 NOT LIKE '%$x%'; (Make sure you escape $x properly beforehand to avoid SQL injection)

Edit: NOT IN does something a bit different - your question isn't totally clear so pick which one to use. LIKE 'xxx%' can use an index. LIKE '%xxx' or LIKE '%xxx%' can't.

len=`cat filename | wc -l`
len=$(( $len + 1 ))
l=$(( $len - 99 ))
sed -n "${l},${len}p" filename

first line takes the length (Total lines) of file then +1 in the total lines after that we have to fatch 100 records so, -99 from total length then just put the variables in the sed command to fetch the last 100 lines from file

I hope this will help you.

SET NOCOUNT ON;
declare @PATH VARCHAR(200)='D:\MyBackupFolder\'
 -- path where you want to take backups
IF OBJECT_ID('TEMPDB..#back') IS NOT NULL

DROP TABLE #back

CREATE TABLE #back
(
RN INT IDENTITY (1,1),
DatabaseName NVARCHAR(200)

)

INSERT INTO #back 
SELECT       'MyDatabase1'
UNION SELECT 'MyDatabase2'
UNION SELECT 'MyDatabase3'
UNION SELECT 'MyDatabase4'

-- your databases List

DECLARE @COUNT INT =0 ,  @RN INT =1, @SCRIPT NVARCHAR(MAX)='',  @DBNAME VARCHAR(200)

PRINT '---------------------FULL BACKUP SCRIPT-------------------------'+CHAR(10)
SET @COUNT = (SELECT COUNT(*) FROM #back)
PRINT 'USE MASTER'+CHAR(10)
WHILE(@COUNT > = @RN)
BEGIN

SET @DBNAME =(SELECT DatabaseName FROM #back WHERE RN=@RN)
SET @SCRIPT ='BACKUP DATABASE ' +'['+@DBNAME+']'+CHAR(10)+'TO DISK =N'''+@PATH+@DBNAME+ N'_Backup_'
+ REPLACE ( REPLACE ( REPLACE ( REPLACE ( CAST ( CAST ( GETDATE () AS DATETIME2 ) AS VARCHAR ( 100 )), '-' , '_' ), ' ' , '_' ), '.' , '_' ), ':' , '' )+'.bak'''+CHAR(10)+'WITH COMPRESSION, STATS = 10'+CHAR(10)+'GO'+CHAR(10)
PRINT @SCRIPT
SET @RN=@RN+1
END

 PRINT '---------------------DIFF BACKUP SCRIPT-------------------------'+CHAR(10)

  SET  @COUNT  =0 SET  @RN  =1 SET @SCRIPT ='' SET @DBNAME =''
 SET @COUNT = (SELECT COUNT(*) FROM #back)
PRINT 'USE MASTER'+CHAR(10)
WHILE(@COUNT > = @RN)
BEGIN
SET @DBNAME =(SELECT DatabaseName FROM #back WHERE RN=@RN)
SET @SCRIPT ='BACKUP DATABASE ' +'['+@DBNAME+']'+CHAR(10)+'TO DISK =N'''+@PATH+@DBNAME+ N'_Backup_'
+ REPLACE ( REPLACE ( REPLACE ( REPLACE ( CAST ( CAST ( GETDATE () AS DATETIME2 ) AS VARCHAR ( 100 )), '-' , '_' ), ' ' , '_' ), '.' , '_' ), ':' , '' )+'.diff'''+CHAR(10)+'WITH DIFFERENTIAL, COMPRESSION, STATS = 10'+CHAR(10)+'GO'+CHAR(10)
PRINT @SCRIPT
SET @RN=@RN+1
END

I found this answer which refers to this tool which really helped a lot.

I hope this answer is still valid when you read this.

As of .NET Core 2.0, the constructor Dictionary<TKey,TValue>(IEnumerable<KeyValuePair<TKey,TValue>>) now exists.

This will prevent browser from auto playing audio.

HTML

<audio type="audio/wav" id="audio" autoplay="false" autostart="false"></audio>

jQuery

$('#audio').attr("src","path_to_audio.wav");
$('#audio').play();

r+ is the canonical mode for reading and writing at the same time. This is not different from using the fopen() system call since file() / open() is just a tiny wrapper around this operating system call.

I use it like this.

xcopy "$(TargetDir)$(TargetName).dll" "$(SolutionDir)Lib\TIRM\x86\" /F /Y 
xcopy "$(TargetDir)$(TargetName).lib" "$(SolutionDir)Lib\TIRM\x86\" /F /Y 


/F : Copy source is File   
/Y : Overwrite and don't ask me

Note the use of this. $(TargetDir) has already '\' "D:\MyProject\bin\" = $(TargetDir)

You can find macro in Command editor

I combined, minified and extended (some more checks) the answers from @Bijay Rungta and @J.C. Inacio

<?php
if(!extension_loaded('Memcache'))
{
    die("Memcache extension is not loaded");
}

if (!class_exists('Memcache')) 
{
    die('Memcache class not available');
}

$memcacheObj = new Memcache;
if(!$memcacheObj)
{
    die('Could not create memcache object');
}

if (!$memcacheObj->connect('localhost')) 
{
    die('Could not connect to memcache server');
}

// testdata to store in memcache
$testData = array(
    'the' => 'cake',
    'is' => 'a lie',
);

// set data (if not present)
$aData = $memcacheObj->get('data');
if (!$aData) 
{
    if(!$memcacheObj->set('data', $testData, 0, 300))
    {
        die('Memcache could not set the data');
    }
}

// try to fetch data
$aData = $memcacheObj->get('data');
if (!$aData) 
{
    die('Memcache is not responding with data');
}

if($aData !== $testData)
{
    die('Memcache is responding but with wrong data');
}

die('Memcache is working fine');

1.make sure you ref jquery.js at first
2.check layout,make sure you call "~/bundles/bootstrap"
3.check layout,see render section Scripts position,it must be after "~/bundles/bootstrap"
4.add class "datepicker" to textbox
5.put $('.datepicker').datepicker(); in $(function(){...});

Woohoo my first post even though this is a year old. To avoid the background-coloring issues with wrappers, you could use inline-block with hr (nobody said that explicitly). Text-align should center correctly since they are inline elements.

<div style="text-align:center">
    <hr style="display:inline-block; position:relative; top:4px; width:45%" />
       &nbsp;New Section&nbsp;
    <hr style="display:inline-block; position:relative; top:4px; width:45%" />
</div>

I have done a sample one using jQuery

var descr = 'test"inside"outside';
$(function(){
   $("#div1").append('<a href="#" onclick="DoEdit(descr);">Click Me</a>');       
});

function DoEdit(desc)
{
    alert ( desc );
}

And this works in Internet Explorer and Firefox.

When I worked on Mac OS X in the lab I was able to get the terminal colors from using Terminal (rather than X11) and then editing the profile (from the Mac menu bar). The interface is a bit odd on the colors, but you have to set the modified theme as default.

Further settings worked by editing .bashrc.

I had this error happen when I had 2 scripts I was running. I had:

• A SQL*Plus session connected directly using a schema user account (account #1)
• Another SQL*Plus session connected using a different schema user account (account #2), but connecting across a database link as the first account

I ran a table drop, then table creation as account #1. I ran a table update on account #2's session. Did not commit changes. Re-ran table drop/creation script as account #1. Got error on the drop table x command.

I solved it by running COMMIT; in the SQL*Plus session of account #2.

This happens from time to time in Eclipse. In the "Project" menu there's a "Clean" option, that usually takes care of the problem.

Both options are already mentioned in the existing answers:

from django.db.models import Q
q1 = User.objects.filter(Q(income__gte=5000) | Q(income__isnull=True))

and

q2 = User.objects.filter(income__gte=5000) | User.objects.filter(income__isnull=True)

However, there seems to be some confusion regarding which one is to prefer.

The point is that they are identical on the SQL level, so feel free to pick whichever you like!

The Django ORM Cookbook talks in some detail about this, here is the relevant part:

queryset = User.objects.filter(
        first_name__startswith='R'
    ) | User.objects.filter(
    last_name__startswith='D'
)

leads to

In [5]: str(queryset.query)
Out[5]: 'SELECT "auth_user"."id", "auth_user"."password", "auth_user"."last_login",
"auth_user"."is_superuser", "auth_user"."username", "auth_user"."first_name",
"auth_user"."last_name", "auth_user"."email", "auth_user"."is_staff",
"auth_user"."is_active", "auth_user"."date_joined" FROM "auth_user"
WHERE ("auth_user"."first_name"::text LIKE R% OR "auth_user"."last_name"::text LIKE D%)'

and

qs = User.objects.filter(Q(first_name__startswith='R') | Q(last_name__startswith='D'))

leads to

In [9]: str(qs.query)
Out[9]: 'SELECT "auth_user"."id", "auth_user"."password", "auth_user"."last_login",
 "auth_user"."is_superuser", "auth_user"."username", "auth_user"."first_name",
  "auth_user"."last_name", "auth_user"."email", "auth_user"."is_staff",
  "auth_user"."is_active", "auth_user"."date_joined" FROM "auth_user"
  WHERE ("auth_user"."first_name"::text LIKE R% OR "auth_user"."last_name"::text LIKE D%)'

source: django-orm-cookbook

You cannot resize an array in java.

Once the size of array is declared, it remains fixed.

Instead you can use ArrayList that has dynamic size, meaning you don't need to worry about its size. If your array list is not big enough to accommodate new values then it will be resized automatically.

ArrayList<String> ar = new ArrayList<String>();
String s1 ="Test1";
String s2 ="Test2";
String s3 ="Test3";
ar.add(s1);
ar.add(s2);
ar.add(s3);

String s4 ="Test4";
ar.add(s4);

By default CM10 only allows root access from Apps not ADB. Go to Settings -> Developer options -> Root access, and change option to "Apps and ADB".

You can also use the data-interval attribute eg. <div class="carousel" data-interval="10000">

Add a "shebang" at the top of your file:

#!/bin/bash

And make your file executable (chmod +x script.sh).

Finally, modify your path to add the directory where your script is located:

export PATH=$PATH:/appropriate/directory

(typically, you want $HOME/bin for storing your own scripts)

This worked for me on Ubuntu linux while in tcshell.

1. CtrlZ to pause it

2. bg to run in background

3. jobs to get its job number

4. nohup %n where n is the job number

The other answers demonstrate the difference between array_walk (in-place modification) and array_map (return modified copy) quite well. However, they don't really mention array_reduce, which is an illuminating way to understand array_map and array_filter.

The array_reduce function takes an array, a two-argument function and an 'accumulator', like this:

array_reduce(array('a', 'b', 'c', 'd'),
             'my_function',
             $accumulator)

The array's elements are combined with the accumulator one at a time, using the given function. The result of the above call is the same as doing this:

my_function(
  my_function(
    my_function(
      my_function(
        $accumulator,
        'a'),
      'b'),
    'c'),
  'd')

If you prefer to think in terms of loops, it's like doing the following (I've actually used this as a fallback when array_reduce wasn't available):

function array_reduce($array, $function, $accumulator) {
  foreach ($array as $element) {
    $accumulator = $function($accumulator, $element);
  }
  return $accumulator;
}

This looping version makes it clear why I've called the third argument an 'accumulator': we can use it to accumulate results through each iteration.

So what does this have to do with array_map and array_filter? It turns out that they're both a particular kind of array_reduce. We can implement them like this:

array_map($function, $array)    === array_reduce($array, $MAP,    array())
array_filter($array, $function) === array_reduce($array, $FILTER, array())

Ignore the fact that array_map and array_filter take their arguments in a different order; that's just another quirk of PHP. The important point is that the right-hand-side is identical except for the functions I've called $MAP and $FILTER. So, what do they look like?

$MAP = function($accumulator, $element) {
  $accumulator[] = $function($element);
  return $accumulator;
};

$FILTER = function($accumulator, $element) {
  if ($function($element)) $accumulator[] = $element;
  return $accumulator;
};

As you can see, both functions take in the $accumulator and return it again. There are two differences in these functions:

• $MAP will always append to $accumulator, but $FILTER will only do so if $function($element) is TRUE.
• $FILTER appends the original element, but $MAP appends $function($element).

Note that this is far from useless trivia; we can use it to make our algorithms more efficient!

We can often see code like these two examples:

// Transform the valid inputs
array_map('transform', array_filter($inputs, 'valid'))

// Get all numeric IDs
array_filter(array_map('get_id', $inputs), 'is_numeric')

Using array_map and array_filter instead of loops makes these examples look quite nice. However, it can be very inefficient if $inputs is large, since the first call (map or filter) will traverse $inputs and build an intermediate array. This intermediate array is passed straight into the second call, which will traverse the whole thing again, then the intermediate array will need to be garbage collected.

We can get rid of this intermediate array by exploiting the fact that array_map and array_filter are both examples of array_reduce. By combining them, we only have to traverse $inputs once in each example:

// Transform valid inputs
array_reduce($inputs,
             function($accumulator, $element) {
               if (valid($element)) $accumulator[] = transform($element);
               return $accumulator;
             },
             array())

// Get all numeric IDs
array_reduce($inputs,
             function($accumulator, $element) {
               $id = get_id($element);
               if (is_numeric($id)) $accumulator[] = $id;
               return $accumulator;
             },
             array())

NOTE: My implementations of array_map and array_filter above won't behave exactly like PHP's, since my array_map can only handle one array at a time and my array_filter won't use "empty" as its default $function. Also, neither will preserve keys.

It's not difficult to make them behave like PHP's, but I felt that these complications would make the core idea harder to spot.

According to the manual this should work:

Custom key/value method:

You can include an operator in the first parameter in order to control the comparison:

$this->db->where('name !=', $name);
$this->db->where('id <', $id);
Produces: WHERE name != 'Joe' AND id < 45

Search for $this->db->where(); and look at item #2.

It looks like you are calling a non static member (a property or method, specifically setTextboxText) from a static method (specifically SumData). You will need to either:

1. Make the called member static also:

   static void setTextboxText(int result)
   {
       // Write static logic for setTextboxText.  
       // This may require a static singleton instance of Form1.
   }
   

2. Create an instance of Form1 within the calling method:

   private static void SumData(object state)
   {
       int result = 0;
       //int[] icount = (int[])state;
       int icount = (int)state;
   
       for (int i = icount; i > 0; i--)
       {
           result += i;
           System.Threading.Thread.Sleep(1000);
       }
       Form1 frm1 = new Form1();
       frm1.setTextboxText(result);
   }
   

   Passing in an instance of Form1 would be an option also.

3. Make the calling method a non-static instance method (of Form1):

   private void SumData(object state)
   {
       int result = 0;
       //int[] icount = (int[])state;
       int icount = (int)state;
   
       for (int i = icount; i > 0; i--)
       {
           result += i;
           System.Threading.Thread.Sleep(1000);
       }
       setTextboxText(result);
   }
   

More info about this error can be found on MSDN.

For removing duplicate rows with multiple fields , first cancate them to the new unique key which is specified for the only distinct rows, then use "group by" command to removing duplicate rows with the same new unique key:

Create TEMPORARY table tmp select concat(f1,f2) as cfs,t1.* from mytable as t1;
Create index x_tmp_cfs on tmp(cfs);
Create table unduptable select f1,f2,... from tmp group by cfs;

This worked for me:

[XmlInclude(typeof(BankPayment))]
[Serializable]
public abstract class Payment { }    

[Serializable]
public class BankPayment : Payment {} 

[Serializable]
public class Payments : List<Payment>{}

XmlSerializer serializer = new XmlSerializer(typeof(Payments), new Type[]{typeof(Payment)});

You should check this: https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/upgrade-insecure-requests

Add this meta tag to your index.html inside head

<meta http-equiv="Content-Security-Policy" content="upgrade-insecure-requests">

Hope it helped.

You can only access cookies for a specific site. Using document.cookie you will get a list of escaped key=value pairs seperated by a semicolon.

secret=do%20not%20tell%you;last_visit=1225445171794

To simplify the access, you have to parse the string and unescape all entries:

var getCookies = function(){
  var pairs = document.cookie.split(";");
  var cookies = {};
  for (var i=0; i<pairs.length; i++){
    var pair = pairs[i].split("=");
    cookies[(pair[0]+'').trim()] = unescape(pair.slice(1).join('='));
  }
  return cookies;
}

So you might later write:

var myCookies = getCookies();
alert(myCookies.secret); // "do not tell you"

• Add import sys as the new topline
• You misspelled "executables" on the last line.
• Remove script = on last line.

The code should now look like:

import sys
from cx_Freeze import setup, Executable

setup(
    name = "On Dijkstra's Algorithm",
    version = "3.1",
    description = "A Dijkstra's Algorithm help tool.",
    executables = [Executable("Main.py", base = "Win32GUI")])

Use the command prompt (cmd) to run python setup.py build. (Run this command from the folder containing setup.py.) Notice the build parameter we added at the end of the script call.

Had this issue on Python 2.7.9, solved by updating to Python 2.7.10 (unreleased when this question was asked and answered).

The code that you have shown will do what you want iff those properties equal "" when they are not filled in. If they equal $null when not filled in for example, then they will not equal "". Here is an example to prove the point that what you have will work for "":

$foo = 1
$bar = 1
$foo -eq 1 -and $bar -eq 1
True
$foo -eq 1 -and $bar -eq 2
False

ECMAScript 6 introduced String.prototype.includes:

const string = "foo";_x000D_
const substring = "oo";_x000D_
_x000D_
console.log(string.includes(substring));

includes doesn’t have Internet Explorer support, though. In ECMAScript 5 or older environments, use String.prototype.indexOf, which returns -1 when a substring cannot be found:

var string = "foo";_x000D_
var substring = "oo";_x000D_
_x000D_
console.log(string.indexOf(substring) !== -1);

A linked list is like a conga line. Everyone holds the hips of the person in front of them and their hips are held in turn by the person to their rear, excepting only those in the front and the back. The only way to add people to the line is to find the right spot and decouple that connection, then insert the new person or people.

The proper way to do this is to use multiple tables and JOIN them in your queries.

For example:

CREATE TABLE person (
`id` INT NOT NULL PRIMARY KEY,
`name` VARCHAR(50)
);

CREATE TABLE fruits (
`fruit_name` VARCHAR(20) NOT NULL PRIMARY KEY,
`color` VARCHAR(20),
`price` INT
);

CREATE TABLE person_fruit (
`person_id` INT NOT NULL,
`fruit_name` VARCHAR(20) NOT NULL,
PRIMARY KEY(`person_id`, `fruit_name`)
);

The person_fruit table contains one row for each fruit a person is associated with and effectively links the person and fruits tables together, I.E.

1 | "banana"
1 | "apple"
1 | "orange"
2 | "straberry"
2 | "banana"
2 | "apple"

When you want to retrieve a person and all of their fruit you can do something like this:

SELECT p.*, f.*
FROM person p
INNER JOIN person_fruit pf
ON pf.person_id = p.id
INNER JOIN fruits f
ON f.fruit_name = pf.fruit_name

For MongoDB 3.6 and newer:

The $expr operator allows the use of aggregation expressions within the query language, thus you can leverage the use of $strLenCP operator to check the length of the string as follows:

db.usercollection.find({ 
    "name": { "$exists": true },
    "$expr": { "$gt": [ { "$strLenCP": "$name" }, 40 ] } 
})

For MongoDB 3.4 and newer:

You can also use the aggregation framework with the $redact pipeline operator that allows you to proccess the logical condition with the $cond operator and uses the special operations $$KEEP to "keep" the document where the logical condition is true or $$PRUNE to "remove" the document where the condition was false.

This operation is similar to having a $project pipeline that selects the fields in the collection and creates a new field that holds the result from the logical condition query and then a subsequent $match, except that $redact uses a single pipeline stage which is more efficient.

As for the logical condition, there are String Aggregation Operators that you can use $strLenCP operator to check the length of the string. If the length is $gt a specified value, then this is a true match and the document is "kept". Otherwise it is "pruned" and discarded.

Consider running the following aggregate operation which demonstrates the above concept:

db.usercollection.aggregate([
    { "$match": { "name": { "$exists": true } } },
    {
        "$redact": {
            "$cond": [
                { "$gt": [ { "$strLenCP": "$name" }, 40] },
                "$$KEEP",
                "$$PRUNE"
            ]
        }
    },
    { "$limit": 2 }
])

If using $where, try your query without the enclosing brackets:

db.usercollection.find({$where: "this.name.length > 40"}).limit(2);

A better query would be to to check for the field's existence and then check the length:

db.usercollection.find({name: {$type: 2}, $where: "this.name.length > 40"}).limit(2); 

or:

db.usercollection.find({name: {$exists: true}, $where: "this.name.length > 
40"}).limit(2); 

MongoDB evaluates non-$where query operations before $where expressions and non-$where query statements may use an index. A much better performance is to store the length of the string as another field and then you can index or search on it; applying $where will be much slower compared to that. It's recommended to use JavaScript expressions and the $where operator as a last resort when you can't structure the data in any other way, or when you are dealing with a small subset of data.

A different and faster approach that avoids the use of the $where operator is the $regex operator. Consider the following pattern which searches for

db.usercollection.find({"name": {"$type": 2, "$regex": /^.{41,}$/}}).limit(2); 

Note - From the docs:

If an index exists for the field, then MongoDB matches the regular expression against the values in the index, which can be faster than a collection scan. Further optimization can occur if the regular expression is a “prefix expression”, which means that all potential matches start with the same string. This allows MongoDB to construct a “range” from that prefix and only match against those values from the index that fall within that range.

A regular expression is a “prefix expression” if it starts with a caret (^) or a left anchor (\A), followed by a string of simple symbols. For example, the regex /^abc.*/ will be optimized by matching only against the values from the index that start with abc.

Additionally, while /^a/, /^a.*/, and /^a.*$/ match equivalent strings, they have different performance characteristics. All of these expressions use an index if an appropriate index exists; however, /^a.*/, and /^a.*$/ are slower. /^a/ can stop scanning after matching the prefix.

best way is using reference, and not using unset (which make another step to clean memory)

$tab = ['two' => [] ];

solution:

$tab['newname'] = & $tab['two'];

you have one original and one reference with new name.

or if you don't want have two names in one value is good make another tab and foreach on reference

foreach($tab as $key=> & $value) {
    if($key=='two') { 
        $newtab["newname"] = & $tab[$key];
     } else {
        $newtab[$key] = & $tab[$key];
     }
}

Iterration is better on keys than clone all array, and cleaning old array if you have long data like 100 rows +++ etc..

Try to replace the

padding: 2px 30px 2px 2px;

with

padding: 2px 2px 2px 2px;

It should work.

If it doesn't require human interaction which means there will be no UI that invokes this operation and I assume it would restart at some set interval? If you have access to machine, you could just set a scheduled task to execute a batch file using good old NET STOP and NET START

net stop "DNS Client"
net start "DNS client"

or if you want to get a little more sophisticated, you could try Powershell

It is likely that you are running the python executable from /usr/bin (Apple version) instead of /usr/loca/bin (Brew version)

You can either

a) check your PATH variable

or

b) run brew doctor

or

c) run which python

to check if it is the case.

You can see e.gs. in the documentation demonstrating joris answer. Also from the documentation, you could also set subplots=True and layout=(,) within the pandas plot function:

df.plot(subplots=True, layout=(1,2))

You could also use fig.add_subplot() which takes subplot grid parameters such as 221, 222, 223, 224, etc. as described in the post here. Nice examples of plot on pandas data frame, including subplots, can be seen in this ipython notebook.

As you can see in the documentation of JSHint you can change options per function or per file. In your case just place a comment in your file or even more local just in the function that uses eval:

/*jshint evil:true */

function helloEval(str) {
    /*jshint evil:true */
    eval(str);
}

Plain and simply put the most secure way would be to use environment variables to store/retrieve your credentials. Thus a curl command like:

curl -Lk -XGET -u "${API_USER}:${API_HASH}" -b cookies.txt -c cookies.txt -- "http://api.somesite.com/test/blah?something=123"

Would then call your restful api and pass the http WWW_Authentication header with the Base64 encoded values of API_USER and API_HASH. The -Lk just tells curl to follow http 30x redirects and to use insecure tls handling (ie ignore ssl errors). While the double -- is just bash syntax sugar to stop processing command line flags. Furthermore, the -b cookies.txt and -c cookies.txt flags handle cookies with -b sending cookies and -c storing cookies locally.

The manual has more examples of authentication methods.

this works fine for me

DataTable DT = new DataTable();

DT = DT.AsEnumerable().Select(R =>
{
      R["Campo1"] = valor;
      return (R);
}).ToArray().CopyToDataTable();

You can also try this

    LinkedListNode pointer = head;
    LinkedListNode prev = null, curr = null;

    /* Pointer variable loops through the LL */
    while(pointer != null)
    {
        /* Proceed the pointer variable. Before that, store the current pointer. */
        curr = pointer; //          
        pointer = pointer.next;         

        /* Reverse the link */
        curr.next = prev;

        /* Current becomes previous for the next iteration */
        prev = curr;            
    }

    System.out.println(prev.printForward());

Simple jQuery solution - find the <a> element where href="x" and click it:

$('a[href="#tabs-2"]').click();

You can not run/execute an .exe file that is in the users local machine or through a site. The user must first download the exe file and then run the executable file.
So there is no possible way

The following code works only when the EXE is Present in the User's Machine.

<a href = "C:\folder_name\program.exe">

You should define source code encoding, add this to the top of your script:

# -*- coding: utf-8 -*-

The reason why it works differently in console and in the IDE is, likely, because of different default encodings set. You can check it by running:

import sys
print sys.getdefaultencoding()

Also see:

• Why declare unicode by string in python?
• Changing default encoding of Python?
• Correct way to define Python source code encoding

It's not a format suitable for blindly copying to another machine, but users who wish to work out whether they've added a repository yet or not (like I did), you can just do:

sudo apt update

When apt is updating, it outputs a list of repositories it fetches. It seems obvious, but I've just realised what the GET URLs are that it spits out.

The following awk-based expression could be used to generate a sources.list file:

 cat /tmp/apt-update.txt | awk '/http/ { gsub("/", " ", $3); gsub("^\s\*$", "main", $3); printf("deb "); if($4 ~ "^[a-z0-9]$") printf("[arch=" $4 "] "); print($2 " " $3) }' | sort | uniq

Alternatively, as other answers suggest, you could just cat all the pre-existing sources like this:

cat /etc/apt/sources.list /etc/apt/sources.list.d/*

Since the disabled repositories are commented out with hash, this should work as intended.

I have to display files of computer code. If special characters are inside the file like less than or greater than, a simple "include" will not display them. Try:

$file = 'code.ino';
$orig = file_get_contents($file);
$a = htmlentities($orig);

echo '<code>';
echo '<pre>';

echo $a;

echo '</pre>';
echo '</code>';

The following is MultiLevel dropdown based on bootstrap4. I tried it was according to the bootstrap4 basic dropdown.

.dropdown-submenu{_x000D_
    position: relative;_x000D_
}_x000D_
.dropdown-submenu a::after{_x000D_
    transform: rotate(-90deg);_x000D_
    position: absolute;_x000D_
    right: 3px;_x000D_
    top: 40%;_x000D_
}_x000D_
.dropdown-submenu:hover .dropdown-menu, .dropdown-submenu:focus .dropdown-menu{_x000D_
    display: flex;_x000D_
    flex-direction: column;_x000D_
    position: absolute !important;_x000D_
    margin-top: -30px;_x000D_
    left: 100%;_x000D_
}_x000D_
@media (max-width: 992px) {_x000D_
    .dropdown-menu{_x000D_
        width: 50%;_x000D_
    }_x000D_
    .dropdown-menu .dropdown-submenu{_x000D_
        width: auto;_x000D_
    }_x000D_
}

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" integrity="sha384-rwoIResjU2yc3z8GV/NPeZWAv56rSmLldC3R/AZzGRnGxQQKnKkoFVhFQhNUwEyJ" crossorigin="anonymous">_x000D_
<script src="https://code.jquery.com/jquery-3.1.1.slim.min.js" integrity="sha384-A7FZj7v+d/sdmMqp/nOQwliLvUsJfDHW+k9Omg/a/EheAdgtzNs3hpfag6Ed950n" crossorigin="anonymous"></script>_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/tether/1.4.0/js/tether.min.js" integrity="sha384-DztdAPBWPRXSA/3eYEEUWrWCy7G5KFbe8fFjk5JAIxUYHKkDx6Qin1DkWx51bBrb" crossorigin="anonymous"></script>_x000D_
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/js/bootstrap.min.js" integrity="sha384-vBWWzlZJ8ea9aCX4pEW3rVHjgjt7zpkNpZk+02D9phzyeVkE+jo0ieGizqPLForn" crossorigin="anonymous"></script>_x000D_
_x000D_
<nav class="navbar navbar-toggleable-md navbar-light bg-faded">_x000D_
  <button class="navbar-toggler navbar-toggler-right" type="button" data-toggle="collapse" data-target="#navbarNavDropdown" aria-controls="navbarNavDropdown" aria-expanded="false" aria-label="Toggle navigation">_x000D_
    <span class="navbar-toggler-icon"></span>_x000D_
  </button>_x000D_
  <a class="navbar-brand" href="#">Navbar</a>_x000D_
  <div class="collapse navbar-collapse" id="navbarNavDropdown">_x000D_
    <ul class="navbar-nav mr-auto">_x000D_
      <li class="nav-item active">_x000D_
        <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>_x000D_
      </li>_x000D_
      <li class="nav-item">_x000D_
        <a class="nav-link" href="#">Link 1</a>_x000D_
      </li>_x000D_
      <li class="nav-item dropdown">_x000D_
        <a class="nav-link dropdown-toggle" href="http://example.com" id="navbarDropdownMenuLink" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">_x000D_
          Dropdown link_x000D_
        </a>_x000D_
        <ul class="dropdown-menu" aria-labelledby="navbarDropdownMenuLink">_x000D_
          <li><a class="dropdown-item" href="#">Action</a></li>_x000D_
          <li><a class="dropdown-item" href="#">Another action</a></li>_x000D_
          <li class="dropdown-submenu"><a class="dropdown-item dropdown-toggle" data-toggle="dropdown" href="#">Something else here</a>_x000D_
            <ul class="dropdown-menu">_x000D_
              <a class="dropdown-item" href="#">A</a>_x000D_
              <a class="dropdown-item" href="#">b</a>_x000D_
            </ul>_x000D_
          </li>_x000D_
        </ul>_x000D_
      </li>_x000D_
    </ul>_x000D_
  </div>_x000D_
</nav>

win32gui.GetCursorPos(point)

This retrieves the cursor's position, in screen coordinates - point = (x,y)

flags, hcursor, (x,y) = win32gui.GetCursorInfo()

Retrieves information about the global cursor.

Links:

• http://msdn.microsoft.com/en-us/library/ms648389(VS.85).aspx
• http://msdn.microsoft.com/en-us/library/ms648390(VS.85).aspx

I am assuming that you would be using python win32 API bindings or pywin32.

After you write to the MemoryStream and before you read it back, you need to Seek back to the beginning of the MemoryStream so you're not reading from the end.

UPDATE

After seeing your update, I think there's a more reliable way to build the stream:

UnicodeEncoding uniEncoding = new UnicodeEncoding();
String message = "Message";

// You might not want to use the outer using statement that I have
// I wasn't sure how long you would need the MemoryStream object    
using(MemoryStream ms = new MemoryStream())
{
    var sw = new StreamWriter(ms, uniEncoding);
    try
    {
        sw.Write(message);
        sw.Flush();//otherwise you are risking empty stream
        ms.Seek(0, SeekOrigin.Begin);

        // Test and work with the stream here. 
        // If you need to start back at the beginning, be sure to Seek again.
    }
    finally
    {
        sw.Dispose();
    }
}

As you can see, this code uses a StreamWriter to write the entire string (with proper encoding) out to the MemoryStream. This takes the hassle out of ensuring the entire byte array for the string is written.

Update: I stepped into issue with empty stream several time. It's enough to call Flush right after you've finished writing.

Getting into shape

To manage a git repo under a separate github/bitbucket/whatever account, you simply need to generate a new SSH key.

But before we can start pushing/pulling repos with your second identity, we gotta get you into shape – Let's assume your system is setup with a typical id_rsa and id_rsa.pub key pair. Right now your tree ~/.ssh looks like this

$ tree ~/.ssh
/Users/you/.ssh
+-- known_hosts
+-- id_rsa
+-- id_rsa.pub

First, name that key pair – adding a descriptive name will help you remember which key is used for which user/remote

# change to your ~/.ssh directory
$ cd ~/.ssh

# rename the private key
$ mv id_rsa github-mainuser

# rename the public key
$ mv id_rsa.pub github-mainuser.pub

Next, let's generate a new key pair – here I'll name the new key github-otheruser

$ ssh-keygen -t rsa -b 4096 -f ~/.ssh/github-otheruser

Now, when we look at tree ~/.ssh we see

$ tree ~/.ssh
/Users/you/.ssh
+-- known_hosts
+-- github-mainuser
+-- github-mainuser.pub
+-- github-otheruser
+-- github-otheruser.pub    

Next, we need to setup a ~/.ssh/config file that will define our key configurations. We'll create it with the proper owner-read/write-only permissions

$ (umask 077; touch ~/.ssh/config)

Open that with your favourite editor, and add the following contents

Host github.com
  User git
  IdentityFile ~/.ssh/github-mainuser

Host github.com-otheruser
  HostName github.com
  User git
  IdentityFile ~/.ssh/github-otheruser

Presumably, you'll have some existing repos associated with your primary github identity. For that reason, the "default" github.com Host is setup to use your mainuser key. If you don't want to favour one account over another, I'll show you how to update existing repos on your system to use an updated ssh configuration.

Add your new SSH key to github

Head over to github.com/settings/keys to add your new public key

You can get the public key contents using: copy/paste it to github

$ cat ~/.ssh/github-otheruser.pub
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAACAQDBVvWNQ2nO5...

Now your new user identity is all setup – below we'll show you how to use it.

Getting stuff done: cloning a repo

So how does this come together to work with git and github? Well because you can't have a chicken without and egg, we'll look at cloning an existing repo. This situation might apply to you if you have a new github account for your workplace and you were added to a company project.

Let's say github.com/someorg/somerepo already exists and you were added to it – cloning is as easy as

$ git clone github.com-otheruser:someorg/somerepo.git

That bolded portion must match the Host name we setup in your ~/.ssh/config file. That correctly connects git to the corresponding IdentityFile and properly authenticates you with github

Getting stuff done: creating a new repo

Well because you can't have a chicken without and egg, we'll look at publishing a new repo on your secondary account. This situation applies to users that are create new content using their secondary github account.

Let's assume you've already done a little work locally and you're now ready to push to github. You can follow along with me if you'd like

$ cd ~
$ mkdir somerepo
$ cd somerepo
$ git init

Now configure this repo to use your identity

$ git config user.name "Mister Manager"
$ git config user.email "[email protected]"

Now make your first commit

$ echo "hello world" > readme
$ git add .
$ git commit -m "first commit"

Check the commit to see your new identity was used using git log

$ git log --pretty="%H %an <%ae>"
f397a7cfbf55d44ffdf87aa24974f0a5001e1921 Mister Manager <[email protected]>

Alright, time to push to github! Since github doesn't know about our new repo yet, first go to github.com/new and create your new repo – name it somerepo

Now, to configure your repo to "talk" to github using the correct identity/credentials, we have add a remote. Assuming your github username for your new account is someuser ...

$ git remote add origin github.com-otheruser:someuser/somerepo.git

That bolded portion is absolutely critical and it must match the Host that we defined in your ~/.ssh/config file

Lastly, push the repo

$ git push origin master

Update an existing repo to use a new SSH configuration

Say you already have some repo cloned, but now you want to use a new SSH configuration. In the example above, we kept your existing repos in tact by assigning your previous id_rsa/id_rsa.pub key pair to Host github.com in your SSH config file. There's nothing wrong with this, but I have at least 5 github configurations now and I don't like thinking of one of them as the "default" configuration – I'd rather be explicit about each one.

Before we had this

Host github.com
  User git
  IdentityFile ~/.ssh/github-mainuser

Host github.com-otheruser
  HostName github.com
  User git
  IdentityFile ~/.ssh/github-otheruser

So we will now update that to this (changes in bold)

Host github.com-mainuser
  HostName github.com
  User git
  IdentityFile ~/.ssh/github-mainuser

Host github.com-otheruser
  HostName github.com
  User git
  IdentityFile ~/.ssh/github-otheruser

But now any existing repo with a github.com remote will not work with this identity file. But don't worry, it's a simple fix.

To update any existing repo to use your new SSH configuration, update the repo's remote origin field using set-url -

$ cd existingrepo
$ git remote set-url origin github.com-mainuser:someuser/existingrepo.git

That's it. Now you can push/pull to your heart's content

SSH key file permissions

If you're running into trouble with your public keys not working correctly, SSH is quite strict on the file permissions allowed on your ~/.ssh directory and corresponding key files

As a rule of thumb, any directories should be 700 and any files should be 600 - this means they are owner-read/write-only – no other group/user can read/write them

$ chmod 700 ~/.ssh
$ chmod 600 ~/.ssh/config
$ chmod 600 ~/.ssh/github-mainuser
$ chmod 600 ~/.ssh/github-mainuser.pub
$ chmod 600 ~/.ssh/github-otheruser
$ chmod 600 ~/.ssh/github-otheruser.pub

How I manage my SSH keys

I manage separate SSH keys for every host I connect to, such that if any one key is ever compromised, I don't have to update keys on every other place I've used that key. This is like when you get that notification from Adobe that 150 million of their users' information was stolen – now you have to cancel that credit card and update every service that depends on it – what a nuisance.

Here's what my ~/.ssh directory looks like: I have one .pem key for each user, in a folder for each domain I connect to. I use .pem keys to so I only need one file per key.

$ tree ~/.ssh
/Users/myuser/.ssh
+-- another.site
¦   +-- myuser.pem
+-- config
+-- github.com
¦   +-- myuser.pem
¦   +-- someusername.pem
+-- known_hosts
+-- somedomain.com
¦   +-- someuser.pem
+-- someotherdomain.org
     +-- root.pem

And here's my corresponding /.ssh/config file – obviously the github stuff is relevant to answering this question about github, but this answer aims to equip you with the knowledge to manage your ssh identities on any number of services/machines.

Host another.site
  User muyuser
  IdentityFile ~/.ssh/another.site/muyuser.pem

Host github.com-myuser
  HostName github.com
  User git
  IdentityFile ~/.ssh/github.com/myuser.pem

Host github.com-someuser
  HostName github.com
  User git
  IdentityFile ~/.ssh/github.com/someusername.pem

Host somedomain.com
  HostName 162.10.20.30
  User someuser
  IdentityFile ~/.ssh/somedomain.com/someuser.pem

Host someotherdomain.org
  User someuser
  IdentityFile ~/.ssh/someotherdomain.org/root.pem

Getting your SSH public key from a PEM key

Above you noticed that I only have one file for each key. When I need to provide a public key, I simply generate it as needed.

So when github asks for your ssh public key, run this command to output the public key to stdout – copy/paste where needed

$ ssh-keygen -y -f someuser.pem
ssh-rsa AAAAB3NzaC1yc2EAAAA...

Note, this is also the same process I use for adding my key to any remote machine. The ssh-rsa AAAA... value is copied to the remote's ~/.ssh/authorized_keys file

Converting your id_rsa/id_rsa.pub key pairs to PEM format

So you want to tame you key files and cut down on some file system cruft? Converting your key pair to a single PEM is easy

$ cd ~/.ssh
$ openssl rsa -in id_rsa -outform pem > id_rsa.pem

Or, following along with our examples above, we renamed id_rsa -> github-mainuser and id_rsa.pub -> github-mainuser.pub – so

$ cd ~/.ssh
$ openssl rsa -in github-mainuser -outform pem > github-mainuser.pem

Now just to make sure that we've converted this correct, you will want to verify that the generated public key matches your old public key

# display the public key
$ cat github-mainuser.pub
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAA ... R++Nu+wDj7tCQ==

# generate public key from your new PEM
$ ssh-keygen -y -f someuser.pem
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAA ... R++Nu+wDj7tCQ==

Now that you have your github-mainuser.pem file, you can safely delete your old github-mainuser and github-mainuser.pub files – only the PEM file is necessary; just generate the public key whenever you need it ^_^

Creating PEM keys from scratch

You don't need to create the private/public key pair and then convert to a single PEM key. You can create the PEM key directly.

Let's create a newuser.pem

$ openssl genrsa -out ~/.ssh/newuser.pem 4096

Getting the SSH public key is the same

$ ssh-keygen -y -f ~/.ssh/newuser.pem
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAACA ... FUNZvoKPRQ==