Reference here 2.10.2.1 Troubleshooting Problems Starting the MySQL Server.

1.Find the data directory ,it was configured in my.cnf.

[mysqld]
datadir=/var/lib/mysql

2. Check the err file,it log the error message about why mysql server start failed. the name of err file is related with your hostname.

cd /var/lib/mysql
ll
tail (hostname).err

3.If you find some messages like :

InnoDB: Error: log file ./ib_logfile0 is of different size 0 33554432 bytes
InnoDB: than specified in the .cnf file 0 5242880 bytes!
170513 14:25:22 [ERROR] Plugin 'InnoDB' init function returned error.
170513 14:25:22 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed.
170513 14:25:22 [ERROR] Unknown/unsupported storage engine: InnoDB
170513 14:25:22 [ERROR] Aborting

then

delete ib_logfile0 and ib_logfile1

, then,

/etc/init.d/mysqld start

I had the same problem. mysql -u root -p worked for me. It later asks you for a password. You should then enter the password that you had set for mysql. The default password could be password, if you did not set one. More info here.

ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysql.sock' (2)

I get the error above when I try to log into MYSQL after installing it using brew, I am running MacOs, Oh yea I also noticed mysql is running I have restarted numerous times with no luck resolving the issue along with removing mysql and numerous reinstalls!

So simple I could slap myself, no but really, I solved this by CD into the temp folder that contains mysqlx.sock and mysql.sock.lock files, I deleted the single sock.lock file only and this solved my issue after doing so and I can log into mysql using the mysql -uroot command. Here are the commands I used. (this issue had me hung up for a while)

~ cd /tmp 

/tmp ls 

(this will list all the sock files in the temp folder, output shown below)

com.apple.launchd.8AgGW2s9Bb mysql.sock.lock
com.apple.launchd.batxrSISAJ mysqlx.sock
com.apple.launchd.cRCaxtT41m mysqlx.sock.lock
com.google.Keystone          powerlog

then run

rm -R mysql.sock.lock 

(use command above to remove the sock.lock file from the /tmp directory this resolved my issue)

hope this helped :)

What worked for me is:

1. First I open Logs for MySql in XAMPP panel.
2. At the end it says you are running another instance of mysqlid in port 3306
3. I opened my task manager(Ctrl+Shift+Esc) then find mysqlid and End the task.

MAMP & MAMP PRO 4.0.6 was starting MySql server correctly but stopped doing so after my machine updated the OS to macOS Sierra (10.12.2). I tried a few options mentioned here including setting folder permissions and re-install etc. Nothing seemed fixed the issue for me so I shifted to XAMPP and it is serving OK so far.

Update: I've got MAMP working with this simple solution here.

just run your xammp as an administrator, it works

In my case I had in one report many different datasets to DB and Analysis Services Cube. Looks like that datasets blocked each other and generated such error. For me helped option "Use single transaction when processing the queries" in the CUBE datasource properties

The problem look like there is no data in the directory. copy at least the mysql directory either from your previous directory or from C:\Program Files\MySQL\MySQL Server 5.5\data . And then try again.

I had the same issue - it turned out that i was using a deprecated angular-cli instead of @angular/cli. The latter was used by my dev team and it took me some time to notice that we were using a different versions of angular-cli.

check it: Android Studio->file->project structure->app->flavors->min sdk version and if you want to run your application on your mobile you have to set min sdk version less than your device sdk(API) you can install any API levels.

The documentation reiterates your findings here: https://github.com/angular-ui/ui-router/wiki/URL-Routing#stateparams-service

If my memory serves, $stateParams was introduced later than the original $state.params, and seems to be a simple helper injector to avoid continuously writing $state.params.

I doubt there are any best practice guidelines, but context wins out for me. If you simply want access to the params received into the url, then use $stateParams. If you want to know something more complex about the state itself, use $state.

If you want to remove the file from the remote repo, first remove it from your project with --cache option and then push it:

git rm --cache /path/to/file
git commit -am "Remove file"
git push

(This works even if the file was added to the remote repo some commits ago) Remember to add to .gitignore the file extensions that you don't want to push.

Yea, Indeed @Evert answer is perfectly correct. In addition I'll like to add one more reason that could encounter such error.

>>> np.array([np.zeros((20,200)),np.zeros((20,200)),np.zeros((20,200))])

This will be perfectly fine, However, This leads to error:

>>> np.array([np.zeros((20,200)),np.zeros((20,200)),np.zeros((20,201))])

ValueError: could not broadcast input array from shape (20,200) into shape (20)

The numpy arry within the list, must also be the same size.

curl --head https://www.example.net

I was pointed to this by curl itself; when I issued the command with -X HEAD, it printed:

Warning: Setting custom HTTP method to HEAD with -X/--request may not work the 
Warning: way you want. Consider using -I/--head instead.

in my case it was not related to the path or filename. If filemtime(), fileatime() or filectime() don't work, try stat().

$filedate = date_create(date("Y-m-d", filectime($file)));

becomes

$stat = stat($directory.$file);
$filedate = date_create(date("Y-m-d", $stat['ctime']));

that worked for me.

Complete snippet for deleting files by number of days:

$directory = $_SERVER['DOCUMENT_ROOT'].'/directory/';
$files = array_slice(scandir($directory), 2);
foreach($files as $file)
{
    $extension      = substr($file, -3, 3); 
    if ($extension == 'jpg') // in case you only want specific files deleted
    {
        $stat = stat($directory.$file);
        $filedate = date_create(date("Y-m-d", $stat['ctime']));
        $today = date_create(date("Y-m-d"));
        $days = date_diff($filedate, $today, true);
        if ($days->days > 1) 
        { 
            unlink($directory.$file);
        }
    } 
}

Old question, but I came across it when I had a similar issue and thought I'd share what I ended up doing.

The view that gained focus was different each time so I used the very generic:

View current = getCurrentFocus();
if (current != null) current.clearFocus();

<meta http-equiv="refresh" content="3;url=http://www.google.com/" />

Use the Git GUI in the Git plugin.

Clone your online repository with the URL which you have.

After cloning, make changes to the files. When you make changes, you can see the number changes. Commit those changes.

Fetch from the remote (to check if anything is updated while you are working).

If the fetch operation gives you an update about the changes in the remote repository, make a pull operation which will update your copy in Visual Studio Code. Otherwise, do not make a pull operation if there aren't any changes in the remote repository.

Push your changes to the upstream remote repository by making a push operation.

SELECT TOP 5 Id, Name FROM customerNames
ORDER BY NEWID()

That said, everybody seems to come to this page for the more general answer to your question:

Selecting a random row in SQL

Select a random row with MySQL:

SELECT column FROM table
ORDER BY RAND()
LIMIT 1

Select a random row with PostgreSQL:

SELECT column FROM table
ORDER BY RANDOM()
LIMIT 1

Select a random row with Microsoft SQL Server:

SELECT TOP 1 column FROM table
ORDER BY NEWID()

Select a random row with IBM DB2

SELECT column, RAND() as IDX 
FROM table 
ORDER BY IDX FETCH FIRST 1 ROWS ONLY

Select a random record with Oracle:

SELECT column FROM
( SELECT column FROM table
ORDER BY dbms_random.value )
WHERE rownum = 1

Select a random row with sqlite:

SELECT column FROM table 
ORDER BY RANDOM() LIMIT 1

The default locations of Chrome's profile directory are defined at http://www.chromium.org/user-experience/user-data-directory. For Chrome on Mac, it's

~/Library/Application\ Support/Google/Chrome/Default

The actual location can be different, by setting the --user-data-dir=path/to/directory flag.
If only one user is registered in Chrome, look in the Default/Extensions subdirectory. Otherwise, look in the <profile user name>/Extensions directory.

If that didn't help, you can always do a custom search.

1. Go to chrome://extensions/, and find out the ID of an extension (32 lowercase letters) (if not done already, activate "Developer mode" first).

   

2. Open the terminal, cd to the directory which is most likely a parent of your Chrome profile (if unsure, try ~ then /).

3. Run find . -type d -iname "<EXTENSION ID HERE>", for example:

   find . -type d -iname jifpbeccnghkjeaalbbjmodiffmgedin
   

   Result:

   

git reset

If all you want is to undo an overzealous "git add" run:

git reset

Your changes will be unstaged and ready for you to re-add as you please.

DO NOT RUN git reset --hard.

It will not only unstage your added files, but will revert any changes you made in your working directory. If you created any new files in working directory, it will not delete them though.

Error 32,809: Copying the corrupt sheet to a new sheet and changing the name or deleting the corrupt sheet works for me. Additionally, I went to the SHEET Module of the corrupt sheet and removed the coding from the sheet Module associated with the corrupt sheet. That ALSO cured the problem for me. [ The sheet modules can have routines that are triggered by events specific to that worksheet.] So in my case, I think it was a corrupt Sheet Module, not corrupt data on the worksheet itself.

You can use the EXACT Function for exact string comparisons.

=IF(EXACT(A1, "ENG"), 1, 0)

if you want to access table cell

WebElement thirdCell = driver.findElement(By.Xpath("//table/tbody/tr[2]/td[1]")); 

If you want to access nested table cell -

WebElement thirdCell = driver.findElement(By.Xpath("//table/tbody/tr[2]/td[2]"+//table/tbody/tr[1]/td[2]));

For more details visit this Tutorial

This is a variation of Anthony's answer, which doesn't work if there are duplicate values:

public static <K, V extends Comparable<V>> Map<K, V> sortMapByValues(final Map<K, V> map) {
    Comparator<K> valueComparator =  new Comparator<K>() {
        public int compare(K k1, K k2) {
            final V v1 = map.get(k1);
            final V v2 = map.get(k2);

            /* Not sure how to handle nulls ... */
            if (v1 == null) {
                return (v2 == null) ? 0 : 1;
            }

            int compare = v2.compareTo(v1);
            if (compare != 0)
            {
                return compare;
            }
            else
            {
                Integer h1 = k1.hashCode();
                Integer h2 = k2.hashCode();
                return h2.compareTo(h1);
            }
        }
    };
    Map<K, V> sortedByValues = new TreeMap<K, V>(valueComparator);
    sortedByValues.putAll(map);
    return sortedByValues;
}

Note that it's rather up in the air how to handle nulls.

One important advantage of this approach is that it actually returns a Map, unlike some of the other solutions offered here.

Your code is fine. What you are seeing is a linker issue.

If you put your code in a single file like this:

#include <iostream>
#include <string>

using namespace std;

string trim(const string& str)
{
    size_t first = str.find_first_not_of(' ');
    if (string::npos == first)
    {
        return str;
    }
    size_t last = str.find_last_not_of(' ');
    return str.substr(first, (last - first + 1));
}

int main() {
    string s = "abc ";
    cout << trim(s);

}

then do g++ test.cc and run a.out, you will see it works.

You should check if the file that contains the trim function is included in the link stage of your compilation process.

This answer is for XAMPP on Ubuntu.

The manual for installation and download is on (site official)

http://www.apachefriends.org/it/xampp-linux.html

After to start XAMPP simply call this command:

sudo /opt/lampp/lampp start

You should now see something like this on your screen:

Starting XAMPP 1.8.1...
LAMPP: Starting Apache...
LAMPP: Starting MySQL...
LAMPP started.

If you have this

Starting XAMPP for Linux 1.8.1...                                                             
XAMPP: Another web server daemon is already running.                                          
XAMPP: Another MySQL daemon is already running.                                               
XAMPP: Starting ProFTPD...                                                                    
XAMPP for Linux started

. The solution is

sudo /etc/init.d/apache2 stop
sudo /etc/init.d/mysql stop

And the restast with sudo //opt/lampp/lampp restart

You to fix most of the security weaknesses simply call the following command:

/opt/lampp/lampp security

After the change this file

sudo kate //opt/lampp/etc/extra/httpd-xampp.conf

Find and replace on

    #
# New XAMPP security concept
#
<LocationMatch "^/(?i:(?:xampp|security|licenses|phpmyadmin|webalizer|server-status|server-info))">
    Order deny,allow
    Deny from all
    Allow from ::1 127.0.0.0/8 
    Allow from all
    #\
    #   fc00::/7 10.0.0.0/8 172.16.0.0/12 192.168.0.0/16 \
    #   fe80::/10 169.254.0.0/16

    ErrorDocument 403 /error/XAMPP_FORBIDDEN.html.var
</LocationMatch>

I find that the usual float format {:9.5f} works properly -- suppressing small-value e-notations -- when displaying a list or an array using a loop. But that format sometimes fails to suppress its e-notation when a formatter has several items in a single print statement. For example:

import numpy as np
np.set_printoptions(suppress=True)
a3 = 4E-3
a4 = 4E-4
a5 = 4E-5
a6 = 4E-6
a7 = 4E-7
a8 = 4E-8
#--first, display separate numbers-----------
print('Case 3:  a3, a4, a5:             {:9.5f}{:9.5f}{:9.5f}'.format(a3,a4,a5))
print('Case 4:  a3, a4, a5, a6:         {:9.5f}{:9.5f}{:9.5f}{:9.5}'.format(a3,a4,a5,a6))
print('Case 5:  a3, a4, a5, a6, a7:     {:9.5f}{:9.5f}{:9.5f}{:9.5}{:9.5f}'.format(a3,a4,a5,a6,a7))
print('Case 6:  a3, a4, a5, a6, a7, a8: {:9.5f}{:9.5f}{:9.5f}{:9.5f}{:9.5}{:9.5f}'.format(a3,a4,a5,a6,a7,a8))
#---second, display a list using a loop----------
myList = [a3,a4,a5,a6,a7,a8]
print('List 6:  a3, a4, a5, a6, a7, a8: ', end='')
for x in myList: 
    print('{:9.5f}'.format(x), end='')
print()
#---third, display a numpy array using a loop------------
myArray = np.array(myList)
print('Array 6: a3, a4, a5, a6, a7, a8: ', end='')
for x in myArray:
    print('{:9.5f}'.format(x), end='')
print()

My results show the bug in cases 4, 5, and 6:

Case 3:  a3, a4, a5:               0.00400  0.00040  0.00004
Case 4:  a3, a4, a5, a6:           0.00400  0.00040  0.00004    4e-06
Case 5:  a3, a4, a5, a6, a7:       0.00400  0.00040  0.00004    4e-06  0.00000
Case 6:  a3, a4, a5, a6, a7, a8:   0.00400  0.00040  0.00004  0.00000    4e-07  0.00000
List 6:  a3, a4, a5, a6, a7, a8:   0.00400  0.00040  0.00004  0.00000  0.00000  0.00000
Array 6: a3, a4, a5, a6, a7, a8:   0.00400  0.00040  0.00004  0.00000  0.00000  0.00000

I have no explanation for this, and therefore I always use a loop for floating output of multiple values.

<script src="//code.jquery.com/jquery.min.js"></script>
<script>
function changes() {
$('#link').val('new value');
}
</script>
<button onclick="changes()">a</button>
<input type='text' value='http://www.link.com' id='link'>

I suggest to use the inherits helper that comes with the standard util module: http://nodejs.org/api/util.html#util_util_inherits_constructor_superconstructor

There is an example of how to use it on the linked page.

According to the SQLite documentation for the Command Line Shell For SQLite you can export an SQLite table (or part of a table) as CSV, simply by setting the "mode" to "csv" and then run a query to extract the desired rows of the table:

sqlite> .header on
sqlite> .mode csv
sqlite> .once c:/work/dataout.csv
sqlite> SELECT * FROM tab1;
sqlite> .exit

Then use the ".import" command to import CSV (comma separated value) data into an SQLite table:

sqlite> .mode csv
sqlite> .import C:/work/dataout.csv tab1
sqlite> .exit

Please read the further documentation about the two cases to consider: (1) Table "tab1" does not previously exist and (2) table "tab1" does already exist.

You need not specify receiver. You can use adb instead.

adb shell am broadcast -a com.whereismywifeserver.intent.TEST 
--es sms_body "test from adb"

For more arguments such as integer extras, see the documentation.

You can use Replace instead of INSERT ... ON DUPLICATE KEY UPDATE.

Assuming userInfoList is a List<UserInfo>:

        var groups = userInfoList
            .GroupBy(n => n.metric)
            .Select(n => new
            {
                MetricName = n.Key,
                MetricCount = n.Count()
            }
            )
            .OrderBy(n => n.MetricName);

The lambda function for GroupBy(), n => n.metric means that it will get field metric from every UserInfo object encountered. The type of n is depending on the context, in the first occurrence it's of type UserInfo, because the list contains UserInfo objects. In the second occurrence n is of type Grouping, because now it's a list of Grouping objects.

Groupings have extension methods like .Count(), .Key() and pretty much anything else you would expect. Just as you would check .Lenght on a string, you can check .Count() on a group.

They can also provide a kind of naming collision protection for plugin data. For example, the new Change Data Capture feature in SQL Server 2008 puts the tables it uses in a separate cdc schema. This way, they don't have to worry about a naming conflict between a CDC table and a real table used in the database, and for that matter can deliberately shadow the names of the real tables.

Prefixing the string with an @ indicates that it should be treated as a literal, i.e. no escaping.

For example if your string contains a path you would typically do this:

string path = "c:\\mypath\\to\\myfile.txt";

The @ allows you to do this:

string path = @"c:\mypath\to\myfile.txt";

Notice the lack of double slashes (escaping)

In Qt 5 you now have to add widgets to the QT qmake variable (in your MyProject.pro file).

 QT += widgets

The simplest way to add color programmatically is by using ColorLiteral.

Just add the property ColorLiteral as shown in the example, Xcode will prompt you with a whole list of colors which you can choose. The advantage of doing so is lesser code, add HEX values or RGB. You will also get the recently used colors from the storyboard.

Example: self.view.backgroundColor = ColorLiteral

It is supported since the release of TypeScript 1.6.

The correct command is --init not init:

$ tsc --init

Try to run in your console the following to check the version:

$ tsc -v

If the version is older than 1.6 you will need to update:

$ npm install -g typescript

Remember that you need to install node.js to use npm.

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

CREATE PROCEDURE SP1 AS
   EXEC SP2
   PRINT 'Done'

THis is somthing that should be done in the application layer.

For example, in php it is a s simple as

Edit Added the db connection stuff. No external anything needed.

$sql = "select ...";
$db = new PDO ( "mysql:$dbname", $user, $password) ;
$stmt = $db->prepare($sql);
$stmt->execute();
$result = $stmt->fetchAll();

file_put_contents("output.txt", json_encode($result));

This will go through the source directory, create any directories that do not already exist in destination directory, and move files from source to the destination directory:

import os
import shutil

root_src_dir = 'Src Directory\\'
root_dst_dir = 'Dst Directory\\'

for src_dir, dirs, files in os.walk(root_src_dir):
    dst_dir = src_dir.replace(root_src_dir, root_dst_dir, 1)
    if not os.path.exists(dst_dir):
        os.makedirs(dst_dir)
    for file_ in files:
        src_file = os.path.join(src_dir, file_)
        dst_file = os.path.join(dst_dir, file_)
        if os.path.exists(dst_file):
            # in case of the src and dst are the same file
            if os.path.samefile(src_file, dst_file):
                continue
            os.remove(dst_file)
        shutil.move(src_file, dst_dir)

Any pre-existing files will be removed first (via os.remove) before being replace by the corresponding source file. Any files or directories that already exist in the destination but not in the source will remain untouched.

To understand how PreparedStatement prevents SQL Injection, we need to understand phases of SQL Query execution.

1. Compilation Phase. 2. Execution Phase.

Whenever SQL server engine receives a query, it has to pass through below phases,

1. Parsing and Normalization Phase: In this phase, Query is checked for syntax and semantics. It checks whether references table and columns used in query exist or not. It also has many other tasks to do, but let's not go in detail.

2. Compilation Phase: In this phase, keywords used in query like select, from, where etc are converted into format understandable by machine. This is the phase where query is interpreted and corresponding action to be taken is decided. It also has many other tasks to do, but let's not go in detail.

3. Query Optimization Plan: In this phase, Decision Tree is created for finding the ways in which query can be executed. It finds out the number of ways in which query can be executed and the cost associated with each way of executing Query. It chooses the best plan for executing a query.

4. Cache: Best plan selected in Query optimization plan is stored in cache, so that whenever next time same query comes in, it doesn't have to pass through Phase 1, Phase 2 and Phase 3 again. When next time query come in, it will be checked directly in Cache and picked up from there to execute.

5. Execution Phase: In this phase, supplied query gets executed and data is returned to user as ResultSet object.

Behaviour of PreparedStatement API on above steps

1. PreparedStatements are not complete SQL queries and contain placeholder(s), which at run time are replaced by actual user-provided data.

2. Whenever any PreparedStatment containing placeholders is passed in to SQL Server engine, It passes through below phases

   1. Parsing and Normalization Phase
   2. Compilation Phase
   3. Query Optimization Plan
   4. Cache (Compiled Query with placeholders are stored in Cache.)

UPDATE user set username=? and password=? WHERE id=?

3. Above query will get parsed, compiled with placeholders as special treatment, optimized and get Cached. Query at this stage is already compiled and converted in machine understandable format. So we can say that Query stored in cache is Pre-Compiled and only placeholders need to be replaced with user-provided data.

4. Now at run-time when user-provided data comes in, Pre-Compiled Query is picked up from Cache and placeholders are replaced with user-provided data.

(Remember, after place holders are replaced with user data, final query is not compiled/interpreted again and SQL Server engine treats user data as pure data and not a SQL that needs to be parsed or compiled again; that is the beauty of PreparedStatement.)

If the query doesn't have to go through compilation phase again, then whatever data replaced on the placeholders are treated as pure data and has no meaning to SQL Server engine and it directly executes the query.

Note: It is the compilation phase after parsing phase, that understands/interprets the query structure and gives meaningful behavior to it. In case of PreparedStatement, query is compiled only once and cached compiled query is picked up all the time to replace user data and execute.

Due to one time compilation feature of PreparedStatement, it is free of SQL Injection attack.

You can get detailed explanation with example here: https://javabypatel.blogspot.com/2015/09/how-prepared-statement-in-java-prevents-sql-injection.html

You could use the GetSize function to get those information, cv.GetSize(im) would return a tuple with the width and height of the image. You can also use im.depth and img.nChan to get some more information.

And to resize an image, I would use a slightly different process, with another image instead of a matrix. It is better to try to work with the same type of data:

size = cv.GetSize(im)
thumbnail = cv.CreateImage( ( size[0] / 10, size[1] / 10), im.depth, im.nChannels)
cv.Resize(im, thumbnail)

Hope this helps ;)

Julien

Why not just

PORT=3030 npm run start

make sure your folder permissions are set so that a directory listing is allowed then just point your anchor to that folder using chmod 701 (that might be risky though) for example

<a href="./downloads/folder_i_want_to_display/" >Go to downloads page</a>

make sure that you have no index.html any index file on that directory

Here is a more useful example:

pcregrep -Mi "<title>(.*\n){0,5}</title>" afile.html

It searches the title tag in a html file even if it spans up to 5 lines.

Here is an example of unlimited lines:

pcregrep -Mi "(?s)<title>.*</title>" example.html 

Process GET parameters

The <f:viewParam> manages the setting, conversion and validation of GET parameters. It's like the <h:inputText>, but then for GET parameters.

The following example

<f:metadata>
    <f:viewParam name="id" value="#{bean.id}" />
</f:metadata>

does basically the following:

• Get the request parameter value by name id.
• Convert and validate it if necessary (you can use required, validator and converter attributes and nest a <f:converter> and <f:validator> in it like as with <h:inputText>)
• If conversion and validation succeeds, then set it as a bean property represented by #{bean.id} value, or if the value attribute is absent, then set it as request attribtue on name id so that it's available by #{id} in the view.

So when you open the page as foo.xhtml?id=10 then the parameter value 10 get set in the bean this way, right before the view is rendered.

As to validation, the following example sets the param to required="true" and allows only values between 10 and 20. Any validation failure will result in a message being displayed.

<f:metadata>
    <f:viewParam id="id" name="id" value="#{bean.id}" required="true">
        <f:validateLongRange minimum="10" maximum="20" />
    </f:viewParam>
</f:metadata>
<h:message for="id" />

Performing business action on GET parameters

You can use the <f:viewAction> for this.

<f:metadata>
    <f:viewParam id="id" name="id" value="#{bean.id}" required="true">
        <f:validateLongRange minimum="10" maximum="20" />
    </f:viewParam>
    <f:viewAction action="#{bean.onload}" />
</f:metadata>
<h:message for="id" />

with

public void onload() {
    // ...
}

The <f:viewAction> is however new since JSF 2.2 (the <f:viewParam> already exists since JSF 2.0). If you can't upgrade, then your best bet is using <f:event> instead.

<f:event type="preRenderView" listener="#{bean.onload}" />

This is however invoked on every request. You need to explicitly check if the request isn't a postback:

public void onload() {
    if (!FacesContext.getCurrentInstance().isPostback()) {
        // ...
    }
}

When you would like to skip "Conversion/Validation failed" cases as well, then do as follows:

public void onload() {
    FacesContext facesContext = FacesContext.getCurrentInstance();
    if (!facesContext.isPostback() && !facesContext.isValidationFailed()) {
        // ...
    }
}

Using <f:event> this way is in essence a workaround/hack, that's exactly why the <f:viewAction> was introduced in JSF 2.2.

Pass view parameters to next view

You can "pass-through" the view parameters in navigation links by setting includeViewParams attribute to true or by adding includeViewParams=true request parameter.

<h:link outcome="next" includeViewParams="true">
<!-- Or -->
<h:link outcome="next?includeViewParams=true">

which generates with the above <f:metadata> example basically the following link

<a href="next.xhtml?id=10">

with the original parameter value.

This approach only requires that next.xhtml has also a <f:viewParam> on the very same parameter, otherwise it won't be passed through.

Use GET forms in JSF

The <f:viewParam> can also be used in combination with "plain HTML" GET forms.

<f:metadata>
    <f:viewParam id="query" name="query" value="#{bean.query}" />
    <f:viewAction action="#{bean.search}" />
</f:metadata>
...
<form>
    <label for="query">Query</label>
    <input type="text" name="query" value="#{empty bean.query ? param.query : bean.query}" />
    <input type="submit" value="Search" />
    <h:message for="query" />
</form>
...
<h:dataTable value="#{bean.results}" var="result" rendered="#{not empty bean.results}">
     ...
</h:dataTable>

With basically this @RequestScoped bean:

private String query;
private List<Result> results;

public void search() {
    results = service.search(query);
}

Note that the <h:message> is for the <f:viewParam>, not the plain HTML <input type="text">! Also note that the input value displays #{param.query} when #{bean.query} is empty, because the submitted value would otherwise not show up at all when there's a validation or conversion error. Please note that this construct is invalid for JSF input components (it is doing that "under the covers" already).

See also:

• ViewParam vs @ManagedProperty(value = "#{param.id}")
• Communication in JSF 2.0 - Processing GET request parameters

You are trying to access the first element lstpp.get(0) of an empty array. Just add an element to your array and check for !lstpp.isEmpty() before accessing an element

string abc= dt.Rows[0]["column name"].ToString();

you could simply do:

var newImage = new Image();
newImage.src = "someImg.jpg";

if(document.images)
{
  document.images.yourImageElementName.src = newImage.src;
}

Simple :)

Actually you can do it with sink():

sink("outfile.txt")
cat("hello")
cat("\n")
cat("world")
sink()

hence do:

file.show("outfile.txt")
# hello
# world

grep -a will force grep to search and output from a file that grep thinks is binary. grep -a re test.log

If you are using jQuery, one option that is nice (especially for complicated situations) is to use jQuery's extend method.

function foo(options) {

    default_options = {
        timeout : 1000,
        callback : function(){},
        some_number : 50,
        some_text : "hello world"
    };

    options = $.extend({}, default_options, options);
}

If you call the function then like this:

foo({timeout : 500});

The options variable would then be:

{
    timeout : 500,
    callback : function(){},
    some_number : 50,
    some_text : "hello world"
};

Swift 5.0 + , Simple and Short

example:

Style 1

    func methodName(completionBlock: () -> Void)  {

          print("block_Completion")
          completionBlock()
    }

Style 2

    func methodName(completionBlock: () -> ())  {

        print("block_Completion")
        completionBlock()
    }

Use:

    override func viewDidLoad() {
        super.viewDidLoad()
        
        methodName {

            print("Doing something after Block_Completion!!")
        }
    }

Output

block_Completion

Doing something after Block_Completion!!

In short, always prefer initialization lists when possible. 2 reasons:

• If you do not mention a variable in a class's initialization list, the constructor will default initialize it before entering the body of the constructor you've written. This means that option 2 will lead to each variable being written to twice, once for the default initialization and once for the assignment in the constructor body.

• Also, as mentioned by mwigdahl and avada in other answers, const members and reference members can only be initialized in an initialization list.

Also note that variables are always initialized on the order they are declared in the class declaration, not in the order they are listed in an initialization list (with proper warnings enabled a compiler will warn you if a list is written out of order). Similarly, destructors will call member destructors in the opposite order, last to first in the class declaration, after the code in your class's destructor has executed.

You can use QString.arg like this

QString my_formatted_string = QString("%1/%2-%3.txt").arg("~", "Tom", "Jane");
// You get "~/Tom-Jane.txt"

This method is preferred over sprintf because:

Changing the position of the string without having to change the ordering of substitution, e.g.

// To get "~/Jane-Tom.txt"
QString my_formatted_string = QString("%1/%3-%2.txt").arg("~", "Tom", "Jane");

Or, changing the type of the arguments doesn't require changing the format string, e.g.

// To get "~/Tom-1.txt"
QString my_formatted_string = QString("%1/%2-%3.txt").arg("~", "Tom", QString::number(1));

As you can see, the change is minimal. Of course, you generally do not need to care about the type that is passed into QString::arg() since most types are correctly overloaded.

One drawback though: QString::arg() doesn't handle std::string. You will need to call: QString::fromStdString() on your std::string to make it into a QString before passing it to QString::arg(). Try to separate the classes that use QString from the classes that use std::string. Or if you can, switch to QString altogether.

UPDATE: Examples are updated thanks to Frank Osterfeld.

UPDATE: Examples are updated thanks to alexisdm.

On Windows the subprocesses will import (i.e. execute) the main module at start. You need to insert an if __name__ == '__main__': guard in the main module to avoid creating subprocesses recursively.

Modified testMain.py:

import parallelTestModule

if __name__ == '__main__':    
    extractor = parallelTestModule.ParallelExtractor()
    extractor.runInParallel(numProcesses=2, numThreads=4)

Here is a walkthrough, Using PostgreSQL in your C# (.NET) application (An introduction):

In this article, I would like to show you the basics of using a PostgreSQL database in your .NET application. The reason why I'm doing this is the lack of PostgreSQL articles on CodeProject despite the fact that it is a very good RDBMS. I have used PostgreSQL back in the days when PHP was my main programming language, and I thought.... well, why not use it in my C# application.

Other than that you will need to give us some specific problems that you are having so that we can help diagnose the problem.

My best bet is that they created a graph structure. The nodes are users and "friendships" are edges.

Keep one table of users, keep another table of edges. Then you can keep data about the edges, like "day they became friends" and "approved status," etc.

(&:name) is short for (&:name.to_proc) it is same as tags.map{ |t| t.name }.join(' ')

to_proc is actually implemented in C

Edit: The original link I answered with is now invalid.The newer URL would be https://developers.google.com/web/tools/chrome-devtools/javascript/add-breakpoints#exceptions as of 2016-11-11.

I realize this question has an answer, but it's no longer accurate. Use the link above ^

(link replaced by edited above) - you can now set it to break on all exceptions or just unhandled ones. (Note that you need to be in the Sources tab to see the button.)

Chrome's also added some other really useful breakpoint capabilities now, such as breaking on DOM changes or network events.

Normally I wouldn't re-answer a question, but I had the same question myself, and I found this now-wrong answer, so I figured I'd put this information in here for people who came along later in searching. :)

"Ambiguous column" usually means that the same column name appears in at least two tables; the database engine can't tell which one you want. Use full table names or table aliases to remove the ambiguity.

Here's an example I happened to have in my editor. It's from someone else's problem, but should make sense anyway.

select P.* 
from product_has_image P
inner join highest_priority_images H 
        on (H.id_product = P.id_product and H.priority = p.priority)

here is simplest way to do this

first copy these server.crt & server.key files (find in attachment ) into your apache/conf/ssl directory

then open httpd.conf file & add following line

Listen 80
Listen 443

NameVirtualHost *:80
NameVirtualHost *:443

<VirtualHost *:443>
    DocumentRoot "d:/wamp/www"  #your wamp www root dir
    ServerName localhost
    SSLEngine on
    SSLCertificateFile "d:/wamp/bin/apache/Apache2.4.4/conf/ssl/server.crt"
    SSLCertificateKeyFile "d:/wamp/bin/apache/Apache2.4.4/conf/ssl/server.key"
</VirtualHost>

var rowHandle = gridView.FocusedRowHandle;

var obj = gridView.GetRowCellValue(rowHandle, "FieldName");

//For example  
int val= Convert.ToInt32(gridView.GetRowCellValue(rowHandle, "FieldName"));

If you mean HashCode as in .GetHashCode(), I'm afraid you can't go back. Hash functions are not bi-directional, you can go 'forward' only, not back.

Follow Oded's suggestion if you need to get the color based on the hexadecimal value of the color.

I've been using ClockPick.

Just insert the @ElementCollection annotation over your array list variable, as below:

@ElementCollection
private List<Price> prices = new ArrayList<Price>();

I hope this helps

This might be overkill - but be careful doing anything which relies on the extension of PHP files being .php - what if someone comes along later and adds handlers for .php4 or even .html so they're handled by PHP. You might be better off serving files out of those directories from a different instance of Apache or something, which only serves static content.

You can run below commands.

 ./catalina.sh run

Note: Make sure the port 8080 is open. If not, kill the process that is using 8080 port using sudo kill -9 $(sudo lsof -t -i:8080)

Dynamically Loading Multiple Scripts In Order

The above function works fine if you are loading only one script or you don't care about the loading order of multiple scripts. If you have some scripts that depends on others, you need to use Promise to specify the order of loading. The reason behind this is Javascript loads resources like scripts and images asynchronously. The loading sequence does not depends on the sequence of asynchronous calls, meaning script1 will not be guaranteed to load before script2 even if you call dynamicallyLoadScript("scrip1") before calling dynamicallyLoadScript("scrip2")

So here's another version of dynamicallyLoadScript that guarantees loading order:

// Based on: https://javascript.info/promise-basics#example-loadscript
function dynamicallyLoadScript(url) {
        return new Promise(function(resolve, reject) {
        var script = document.createElement("script");
        script.src = url;
        script.onload = resolve;
        script.onerror = () => reject(new Error(`Error when loading ${url}!`));
        document.body.appendChild(script);
    });

For more on Promises, see this excellent page.

The usage of this new dynamicallyLoadScript is very simple:

dynamicallyLoadScript("script1.js")
.then(() => dynamicallyLoadScript("script2.js"))
.then(() => dynamicallyLoadScript("script3.js"))
.then(() => dynamicallyLoadScript("script4.js"))
.then(() => dynamicallyLoadScript("script5.js"))
//...

Now the scripts are loaded in the order of script1.js, script2.js, script3.js, etc.

Run dependent code after script loads

In addition, you can immediately run code that uses the scripts after they are loaded. Just add another .then after the loading the script:

dynamicallyLoadScript("script1.js")
.then(() => dynamicallyLoadScript("script2.js"))
.then(() => foo()) // foo can be a function defined in either script1, script2
.then(() => dynamicallyLoadScript("script3.js"))
.then(() => {
     if (var1){ // var1 can be a global variable defined in either script1, script2, or script3
          bar(var1); // bar can be a function defined in either script1, script2, or script3
     } else {
          foo(var1);
     }
})
//more .then chains...

Handle loading errors

To display unhandled promise rejections (errors loading scripts, etc), put this unhandledrejection event listener at the top of your code:

// Based on: https://javascript.info/promise-error-handling#unhandled-rejections
window.addEventListener('unhandledrejection', function(event) {
     // the event object has two special properties:
     console.error(event.promise);// the promise that generated the error
     console.error(event.reason); // the unhandled error object
});

Now you will be notified of any script loading errors.

Shortcut Function

If you are loading a lot of scripts without executing code immediately after loading, this shorthand function may come in handy:

function dynamicallyLoadScripts(urls){
        if (urls.length === 0){
            return;
        }
        let promise = dynamicallyLoadScript(urls[0]);
        urls.slice(1).forEach(url => {
            promise = promise.then(() => dynamicallyLoadScript(url));
        });
    }

To use it, just pass in an array of script urls like this:

const scriptURLs = ["dist/script1.js", "dist/script2.js", "dist/script3.js"];
dynamicallyLoadScripts(scriptURLs);

The scripts will be loaded in the order they appear in the array.

Employee emp1 = new Employee() { ID = 1, Name = "Narendra1", Salary = 11111, Experience = 3, Age = 30 };Employee emp2 = new Employee() { ID = 2, Name = "Narendra2", Salary = 21111, Experience = 10, Age = 38 };
Employee emp3 = new Employee() { ID = 3, Name = "Narendra3", Salary = 31111, Experience = 4, Age = 33 };
Employee emp4 = new Employee() { ID = 3, Name = "Narendra4", Salary = 41111, Experience = 7, Age = 33 };

List<Employee> lstEmployee = new List<Employee>();

lstEmployee.Add(emp1);
lstEmployee.Add(emp2);
lstEmployee.Add(emp3);
lstEmployee.Add(emp4);

var eemmppss=lstEmployee.Select(cc=>new {cc.ID,cc.Age}).Distinct();

At least in Xcode 5, this is the thing that solved the problem for me:

Under provisioning profile, select the offending provisioning profile and then select a valid provisioning profile in the pull-down menu.

The glow effect is most-likely controlled by box-shadow. In addition to adding what Pavel said, you can add the box-shadow property for the different browser engines.

textarea {
    border: none;
    overflow: auto;
    outline: none;

    -webkit-box-shadow: none;
    -moz-box-shadow: none;
    box-shadow: none;

    resize: none; /*remove the resize handle on the bottom right*/
}

You may also try adding !important to prioritize this CSS.

I had the same problem, with version 3.4.2

to run it (if you installed it with homebrew) run the process like this:

$ mongod --dbpath /usr/local/var/mongodb

The stuff between the

-----BEGIN RSA PRIVATE KEY---- 

and

-----END RSA PRIVATE KEY----- 

is the base64 encoding of a PKCS#8 PrivateKeyInfo (unless it says RSA ENCRYPTED PRIVATE KEY in which case it is a EncryptedPrivateKeyInfo).

It is not that hard to decode manually, but otherwise your best bet is to P/Invoke to CryptImportPKCS8.

Update: The CryptImportPKCS8 function is no longer available for use as of Windows Server 2008 and Windows Vista. Instead, use the PFXImportCertStore function.

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

If you want the numbers as ints:

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

Unwind segues are used to "go back" to some view controller from which, through a number of segues, you got to the "current" view controller.

Imagine you have something a MyNavController with A as its root view controller. Now you use a push segue to B. Now the navigation controller has A and B in its viewControllers array, and B is visible. Now you present C modally.

With unwind segues, you could now unwind "back" from C to B (i.e. dismissing the modally presented view controller), basically "undoing" the modal segue. You could even unwind all the way back to the root view controller A, undoing both the modal segue and the push segue.

Unwind segues make it easy to backtrack. For example, before iOS 6, the best practice for dismissing presented view controllers was to set the presenting view controller as the presented view controller’s delegate, then call your custom delegate method, which then dismisses the presentedViewController. Sound cumbersome and complicated? It was. That’s why unwind segues are nice.

try this:

$('.nav a').on('click', function(){
    $('.btn-navbar').click(); //bootstrap 2.x
    $('.navbar-toggle').click(); //bootstrap 3.x by Richard
    $('.navbar-toggler').click(); //bootstrap 4.x
});

Get complete form data as array and json stringify it.

var formData = JSON.stringify($("#myForm").serializeArray());

You can use it later in ajax. Or if you are not using ajax; put it in hidden textarea and pass to server. If this data is passed as json string via normal form data then you have to decode it using json_decode. You'll then get all data in an array.

$.ajax({
  type: "POST",
  url: "serverUrl",
  data: formData,
  success: function(){},
  dataType: "json",
  contentType : "application/json"
});

Fix the permissions of /data/db (or /var/lib/mongodb):

sudo chown -R mongodb: /data/db

then restart MongoDB e.g. using

sudo systemctl restart mongod

In case that does not help, check your error message if you are using a data directory different to /var/lib/mongodb. In that case run

sudo chown -R mongodb: <insert your data directory here>

source

I have a large app that was having problems uploading to the AppStore using the archive method you will find in XCode 4. The activity indicator kept spinning for hours whether I was trying to validate or distribute, so I created a support ticket to Apple. During that process, I found out you could right click on the .app in your Products folder inside the Project Navigator of XCode, and compress the app to submit using the Application Loader 2.5.1. (aka the old method). Only the Debug - iphoneos folder is accessible this way (for now) and once Apple responded, this is what they had to say:

I'm glad to hear that Application Loader has provided you a viable workaround. Discussing this situation internally, we're not sure that submitting the Debug build will pose too much of a problem (so long as it was signed with the App Store distribution profile, as you mentioned it was). The app will likely be slower as the debug switches are turned on and optimizations are turned off for the Debug configuration, though it will still run. App Review will ultimately determine whether or not that's ok, as I'm not sure that's something they check for. You could try reaching out directly to App Review to confirm this, if you wish. However, since App Loader is working for you, I do recommend rebuilding the app with your Release configuration and resubmitting to play it safe. To find your Release build in Xcode 4.x, control-click on the Application Archive on the Archives tab in the organizer, and choose "Show in Finder." Then, control-click on the .xcarchive file in Finder and choose "Show Package Contents." The release built .app file should be located within the /Products/Applications folder.

This was very helpful information for developers who are having problems with the archive method, and my app is now uploading successfully without any concern that it won't run to the best of it's ability.

A BufferedReader can be opened and closed but a File is never opened, it just represents a path in the filesystem.

To automatically sync your forked repository with the parent repository, you could use the Pull App on GitHub.

Refer to the Readme for more details.

For advanced setup where you want to preserve your changes done to the forked repository, refer to my answer on a similar question here.

Case 1 : Yes, this works fine.

Case 2 : This will fail with the error ORA-01441 : cannot decrease column length because some value is too big.

Share and enjoy.

int average_in_int = ( (Double) Math.ceil( sum/count ) ).intValue();

this will work

   String myName="domanokz";
   String p=myName.replace(myName.charAt(4),'x');
   System.out.println(p);

Output : domaxokz

You might want to have look at simple command line scheduler "at":

C:\Documents and Settings\mahendra.patil>at/?

The AT command schedules commands and programs to run on a computer at a specified time and date. The Schedule service must be running to use the AT command.

AT [\\computername] [ [id] [/DELETE] | /DELETE [/YES]]
AT [\\computername] time [/INTERACTIVE]
    [ /EVERY:date[,...] | /NEXT:date[,...]] "command"

\computername Specifies a remote computer. Commands are scheduled on the local computer if this parameter is omitted.

id Is an identification number assigned to a scheduled command.

/delete Cancels a scheduled command. If id is omitted, all the scheduled commands on the computer are canceled.

/yes Used with cancel all jobs command when no further confirmation is desired.

time Specifies the time when command is to run.

/interactive Allows the job to interact with the desktop of the user who is logged on at the time the job runs.

/every:date[,...] Runs the command on each specified day(s) of the week or month. If date is omitted, the current day of the month is assumed.

/next:date[,...] Runs the specified command on the next occurrence of the day (for example, next Thursday). If date is omitted, the current day of the month is assumed.

"command" Is the Windows NT command, or batch program to be run.

The solution is DO NOT USE SPACES!

IF "%DevEnvDir%"=="C:\" (

As the question title asks for a regex that finds many dates, I would like to propose a new solution, although there are many solutions already.

In order to find all dates of a string that are in this millennium (2000 - 2999), for me it worked the following:

dates = re.findall('([1-9]|1[0-9]|2[0-9]|3[0-1]|0[0-9])(.|-|\/)([1-9]|1[0-2]|0[0-9])(.|-|\/)(20[0-9][0-9])',dates_ele)

dates = [''.join(dates[i]) for i in range(len(dates))]

This regex is able to find multiple dates in the same string, like bla Bla 8.05/2020 \n BLAH bla15/05-2020 blaa. As one could observe, instead of / the date can have . or -, not necessary at the same time.

Some explaining

More specifically it can find dates of format day , moth year. Day is an one digit integer or a zero followed by one digit integer or 1 or 2 followed by an one digit integer or a 3 followed by 0 or 1. Month is an one digit integer or a zero followed by one digit integer or 1 followed by 0, 1, or 2. Year is the number 20 followed by any number between 00 and 99.

Useful notes

One can add more date splitting symbols by adding | symbol at the end of both (.|-|\/). For example for adding -- one would do (.|-|\/|--)

To have years outside of this millennium one has to modify (20[0-9][0-9]) to ([0-9][0-9][0-9][0-9])

You need to merge the remote branch into your current branch by running git pull.

If your local branch is already up-to-date, you may also need to run git pull --rebase.

A quick google search also turned up this same question asked by another SO user: Cannot push to GitHub - keeps saying need merge. More details there.

Use the modulus (%) operator:

6 % 3 == 0
7 % 3 == 1

This may be obvious, but you can inline the array like so:

package main

import (
    "fmt"
)

func main() {
    for _, element := range [3]string{"a", "b", "c"} {
        fmt.Print(element)
    }
}

outputs:

abc

https://play.golang.org/p/gkKgF3y5nmt

A simple answer without any regex would be:

str = str.substr(0, str.lastIndexOf(list[i])) + 'finish'

It's too late to answer but might be helpful for someone. I was doing a very silly mistake, I was using a selector file named as bottom_color_nav.xml for Select and unselect color change but still it was not reflecting any color change in BottomNavigationView.

Then I realize, I was returning false in onNavigationItemSelected method. It will work fine if you'll return true in this method.

Following below command worked for me

[root@sandbox ~]# pip install google-api-python-client==1.6.4

if you're turned off by the extra line, you can use a wrapper function like so:

def with_iter(iterable):
    with iterable as iter:
        for item in iter:
            yield item

for line in with_iter(open('...')):
    ...

in Python 3.3, the yield from statement would make this even shorter:

def with_iter(iterable):
    with iterable as iter:
        yield from iter

Please try after removing divs from formor try to use onclick method on submit button.

One solution more works with me, If you installed two versions of XCode and you install the second without uninstalling the first in the same directory (/Developer/), you did it wrong. So the solution that works for me was:

1 - Uninstall the current Xcode version with the command sudo /Developer/Library/uninstall-devtools --mode=all.

2 - Install the first Xcode version you had first.

3 - Again sudo /Developer/Library/uninstall-devtools --mode=all.

4 - Then, all is clean and you are able to install the version you want.

More things: maybe you need to restart the computer after install the Xcode or even (in some cases) install two times the Xcode.

I hope I works it take me a lot of time to know that, good luck!!!

Regarding the width and height:

var img = document.getElementById('imageId'); 

var width = img.clientWidth;
var height = img.clientHeight;

Regarding the filesize you can use performance

var size = performance.getEntriesByName(url)[0];
console.log(size.transferSize); // or decodedBodySize might differ if compression is used on server side

Accordingly to W3C checked input's attribute can be absent/ommited or have "checked" as its value. This does not invalidate other values because there's no restriction to the browser implementation to allow values like "true", "on", "yes" and so on. To guarantee that you'll write a cross-browser checkbox/radio use checked="checked", as recommended by W3C.

disabled, readonly and ismap input's attributes go on the same way.

EDITED

empty is not a valid value for checked, disabled, readonly and ismap input's attributes, as warned by @Quentin

You can write like this:

CSS

span{
    background: none repeat scroll 0 0 #F8F8F8;
    border: 5px solid #DFDFDF;
    color: #717171;
    font-size: 13px;
    height: 30px;
    letter-spacing: 1px;
    line-height: 30px;
    margin: 0 auto;
    position: relative;
    text-align: center;
    text-transform: uppercase;
    top: -80px;
    left:-30px;
    display:none;
    padding:0 20px;

}
span:after{
    content:'';
    position:absolute;
    bottom:-10px;
    width:10px;
    height:10px;
    border-bottom:5px solid #dfdfdf;
    border-right:5px solid #dfdfdf;
    background:#f8f8f8;
    left:50%;
    margin-left:-5px;
    -moz-transform:rotate(45deg);
    -webkit-transform:rotate(45deg);
    transform:rotate(45deg);
}
p{
    margin:100px;
    float:left;
    position:relative;
    cursor:pointer;
}

p:hover span{
    display:block;
}

HTML

<p>Hover here<span>some text here ?</span></p>

Check this http://jsfiddle.net/UNs9J/1/

Try run this command it will create a *_limits.conf file under /etc/security/limits.d

echo "* soft nofile 102400" > /etc/security/limits.d/*_limits.conf && echo "* hard nofile 102400" >> /etc/security/limits.d/*_limits.conf

Just exit from terminal and login again and verify by ulimit -n it will set for * users

Java conveniently has the instanceof operator (JLS 15.20.2) to test if a given object is of a given type.

 if (x instanceof List<?>) {   
    List<?> list = (List<?>) x;
    // do something with list
 } else if (x instanceof Collection<?>) {
    Collection<?> col = (Collection<?>) x;
    // do something with col
 }

One thing should be mentioned here: it's important in these kinds of constructs to check in the right order. You will find that if you had swapped the order of the check in the above snippet, the code will still compile, but it will no longer work. That is the following code doesn't work:

 // DOESN'T WORK! Wrong order!
 if (x instanceof Collection<?>) {
    Collection<?> col = (Collection<?>) x;
    // do something with col
 } else if (x instanceof List<?>) { // this will never be reached!
    List<?> list = (List<?>) x;
    // do something with list
 }

The problem is that a List<?> is-a Collection<?>, so it will pass the first test, and the else means that it will never reach the second test. You have to test from the most specific to the most general type.

I changed @Eli Bendersky's answer a little bit to use the ctor __init__() and dtor __del__() to do the timing, so that it can be used more conveniently without indenting the original code:

class Timer(object):
    def __init__(self, name=None):
        self.name = name
        self.tstart = time.time()

    def __del__(self):
        if self.name:
            print '%s elapsed: %.2fs' % (self.name, time.time() - self.tstart)
        else:
            print 'Elapsed: %.2fs' % (time.time() - self.tstart)

To use, simple put Timer("blahblah") at the beginning of some local scope. Elapsed time will be printed at the end of the scope:

for i in xrange(5):
    timer = Timer("eigh()")
    x = numpy.random.random((4000,4000));
    x = (x+x.T)/2
    numpy.linalg.eigh(x)
    print i+1
timer = None

It prints out:

1
eigh() elapsed: 10.13s
2
eigh() elapsed: 9.74s
3
eigh() elapsed: 10.70s
4
eigh() elapsed: 10.25s
5
eigh() elapsed: 11.28s

Have you tried:

1. If you have import project into the eclipse 4, please delete it.
2. In maven consol, run: mvn eclipse:clean
3. In Eclipse 4: File -> Import -> Maven -> Existing Maven Projects

http://msdn.microsoft.com/en-us/library/ms191503.aspx

i would advice to create table with unique name before bulk inserting.

The easiest way to open an admin Powershell window in Windows 10 (and Windows 8) is to add a "Windows Powershell (Admin)" option to the "Power User Menu". Once this is done, you can open an admin powershell window via Win+X,A or by right-clicking on the start button and selecting "Windows Powershell (Admin)":

[

Here's where you replace the "Command Prompt" option with a "Windows Powershell" option:

[

It seems that you are looking to parse commandline arguments into your bash script. I have searched for this recently myself. I came across the following which I think will assist you in parsing the arguments:

http://rsalveti.wordpress.com/2007/04/03/bash-parsing-arguments-with-getopts/

I added the snippet below as a tl;dr

#using : after a switch variable means it requires some input (ie, t: requires something after t to validate while h requires nothing.
while getopts “ht:r:p:v” OPTION
do
     case $OPTION in
         h)
             usage
             exit 1
             ;;
         t)
             TEST=$OPTARG
             ;;
         r)
             SERVER=$OPTARG
             ;;
         p)
             PASSWD=$OPTARG
             ;;
         v)
             VERBOSE=1
             ;;
         ?)
             usage
             exit
             ;;
     esac
done

if [[ -z $TEST ]] || [[ -z $SERVER ]] || [[ -z $PASSWD ]]
then
     usage
     exit 1
fi

./script.sh -t test -r server -p password -v

Using description instead of desc for table2,

update
  table1
set
  value = (select code from table2 where description = table1.value)
where
  exists (select 1 from table2 where description = table1.value)
  and
  table1.updatetype = 'blah'
;

Karate is exactly what you are looking for. Here is an example:

* def myJson = { foo: 'world', hey: 'ho', zee: [5], cat: { name: 'Billie' } }
* match myJson = { cat: { name: 'Billie' }, hey: 'ho', foo: 'world', zee: [5] }

(disclaimer: dev here)

Try changing your CSS to this

button #rock {
    background: url('img/rock.png') no-repeat;
}

...provided that the image is in that place

You're accessing the latitude and longitude incorrectly.

Try

<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false"></script>
<script type="text/javascript">

var geocoder = new google.maps.Geocoder();
var address = "new york";

geocoder.geocode( { 'address': address}, function(results, status) {

  if (status == google.maps.GeocoderStatus.OK) {
    var latitude = results[0].geometry.location.lat();
    var longitude = results[0].geometry.location.lng();
    alert(latitude);
  } 
}); 
</script>

Alternatively you can use an implicit wait:

driver.Manage().Timeouts().ImplicitWait = TimeSpan.FromSeconds(10);

An implicit wait is to tell WebDriver to poll the DOM for a certain amount of time when trying to find an element or elements if they are not immediately available. The default setting is 0. Once set, the implicit wait is set for the life of the WebDriver object instance.

Slight adjustments to @Rob Fonseca-Ensor's solution: The following extension method also works on .Net Standard since I use GetRuntimeMethod instead of GetMethod.

public static class TypeExtensions
{
    public static object GetDefault(this Type t)
    {
        var defaultValue = typeof(TypeExtensions)
            .GetRuntimeMethod(nameof(GetDefaultGeneric), new Type[] { })
            .MakeGenericMethod(t).Invoke(null, null);
        return defaultValue;
    }

    public static T GetDefaultGeneric<T>()
    {
        return default(T);
    }
}

...and the according unit test for those who care about quality:

[Fact]
public void GetDefaultTest()
{
    // Arrange
    var type = typeof(DateTime);

    // Act
    var defaultValue = type.GetDefault();

    // Assert
    defaultValue.Should().Be(default(DateTime));
}

To take a quick look, you can percent-en/decode using this online tool.

Here is the C++ implementation of Jon Skeets Answer. It might not be the most optimal way of implementing it, but it does exactly what it's supposed to.

class Stack {
private:
    struct stack_node {
        int val;
        stack_node *next;
    };
    stack_node *top;
    stack_node *min_top;
public:
    Stack() {
        top = nullptr;
        min_top = nullptr;
    }    
    void push(int num) {
        stack_node *new_node = nullptr;
        new_node = new stack_node;
        new_node->val = num;

        if (is_empty()) {
            top = new_node;
            new_node->next = nullptr;

            min_top = new_node;
            new_node->next = nullptr;
        } else {
            new_node->next = top;
            top = new_node;

            if (new_node->val <= min_top->val) {
                new_node->next = min_top;
                min_top = new_node;
            }
        }
    }

    void pop(int &num) {
        stack_node *tmp_node = nullptr;
        stack_node *min_tmp = nullptr;

        if (is_empty()) {
            std::cout << "It's empty\n";
        } else {
            num = top->val;
            if (top->val == min_top->val) {
                min_tmp = min_top->next;
                delete min_top;
                min_top = min_tmp;
            }
            tmp_node = top->next;
            delete top;
            top = tmp_node;
        }
    }

    bool is_empty() const {
        return !top;
    }

    void get_min(int &item) {
        item = min_top->val;
    }
};

And here is the driver for the class

int main() {
    int pop, min_el;
    Stack my_stack;

    my_stack.push(4);
    my_stack.push(6);
    my_stack.push(88);
    my_stack.push(1);
    my_stack.push(234);
    my_stack.push(2);

    my_stack.get_min(min_el);
    cout << "Min: " << min_el << endl;

    my_stack.pop(pop);
    cout << "Popped stock element: " << pop << endl;

    my_stack.pop(pop);
    cout << "Popped stock element: " << pop << endl;

    my_stack.pop(pop);
    cout << "Popped stock element: " << pop << endl;

    my_stack.get_min(min_el);
    cout << "Min: " << min_el << endl;

    return 0;
}

Output:

Min: 1
Popped stock element: 2
Popped stock element: 234
Popped stock element: 1
Min: 4

First set position of the parent DIV to relative (specifying the offset, i.e. left, top etc. is not necessary) and then apply position: absolute to the child DIV with the offset you want.
It's simple and should do the trick well.

If you are already using Android Studio, you can update via the built in Update mechanism (Check For Updates); make sure you switch to the canary or beta channels if you're not being offered an update.

To configure automatic update settings, see the Updates dialog of your IDE Preferences or settings. You can then switch to either the canary or beta channels. (The default is "stable" but probably that one fails to automatically inform of updates).

Hope it helps. Thanks.

Setting .value to the value of one of the options works on all vaguely-current browsers. On very old browsers, you used to have to set the selectedIndex:

document.getElementById("select").selectedIndex = 0;

If neither that nor your original code is working, I wonder if you might be using IE and have something else on the page creating something called "select"? (Either as a name or as a global variable?) Because some versions of IE have a problem where they conflate namespaces. Try changing the select's id to "fluglehorn" and if that works, you know that's the problem.

Iterate over an objects attributes in python:

class C:
    a = 5
    b = [1,2,3]
    def foobar():
        b = "hi"    

for attr, value in C.__dict__.iteritems():
    print "Attribute: " + str(attr or "")
    print "Value: " + str(value or "")

Prints:

python test.py
Attribute: a
Value: 5
Attribute: foobar
Value: <function foobar at 0x7fe74f8bfc08>
Attribute: __module__
Value: __main__
Attribute: b
Value: [1, 2, 3]
Attribute: __doc__
Value:

My problem is multi modules project with base module, app module and feature module. Each module has AndroidManifest of its own, and I implemented build variant for debug and main. So we must sure that "android:name" just declared in Manifest of debug and main only, and do not set it in any of Manifest in child module. Ex: Manifest in main:

 <application
        android:name=".App"/>

Manifest in debug:

<application
        tools:replace="android:name"
        android:name=".DebugApp"
        />

Do not set "android:name" in other Manifest files like this:

<application android:name=".App">

Just define in feature module like this and it will merged fine

<application> 

If you were using SQL 2012 or above you could use the CONCAT function:

SELECT CONCAT(field1, field2, field3) FROM table1

NULL fields won't break your concatenation.

@bummi - Thanks for the comment - edited my answer to correspond to it.

Well Curl could be a better option for json representation but in that case it would be difficult to understand the structure of json because its in command line. if you want to get your json on browser you simply remove all the XML Annotations like -

@XmlRootElement(name="person")
@XmlAccessorType(XmlAccessType.NONE)
@XmlAttribute
@XmlElement

from your model class and than run the same url, you have used for xml representation.

Make sure that you have jacson-databind dependency in your pom.xml

<dependency>
  <groupId>com.fasterxml.jackson.core</groupId>
  <artifactId>jackson-databind</artifactId>
  <version>2.4.1</version>
</dependency>

genrsa has been replaced by genpkey & when run manually in a terminal it will prompt for a password:

openssl genpkey -aes-256-cbc -algorithm RSA -out /etc/ssl/private/key.pem -pkeyopt rsa_keygen_bits:4096

However when run from a script the command will not ask for a password so to avoid the password being viewable as a process use a function in a shell script:

get_passwd() {
    local passwd=
    echo -ne "Enter passwd for private key: ? "; read -s passwd
    openssl genpkey -aes-256-cbc -pass pass:$passwd -algorithm RSA -out $PRIV_KEY -pkeyopt rsa_keygen_bits:$PRIV_KEYSIZE
}

I am running WHM 10.2.15-MariaDB. To permanently disable strict mode first find out which configuration file our installation prefers. For that, we need the binary’s location:

$ which mysqld
/usr/sbin/mysqld

Then, we use this path to execute the lookup:

$ /usr/sbin/mysqld --verbose --help | grep -A 1 "Default options"

Default options are read from the following files in the given order:
/etc/my.cnf /etc/mysql/my.cnf ~/.my.cnf

We can see that the first favored configuration file is one in the root of the etc folder but that there is a second .cnf file hidden - ~/.my.cnf. Adding the following to the ~/.my.cnf file permanently disabled strict mode for me (needs to be within the mysqld section):

[mysqld]
sql_mode=NO_ENGINE_SUBSTITUTION

I found that adding the line to /etc/my.cnf had no effect at all apart from sending me crazy.

First thing to understand is that a linked list is conceptually the same as an array.

The only difference is in the efficiency of various operations. Most importantly:

• Insertion in the middle: O(1) for list, O(n) for array.
• Direct access to an element in the middle: O(n) for list, O(1) for array.

Thus any analogy that can be used for an array (all the engines of a plane, all the items on a shopping list...) also applies to a linked list, but the efficiency consideration could make it appropriate to make another analogy:

An array would be boxes in a bookcase. When you remove the box from from the n-th row, all boxes from n+1 up need to be moved one shelf down (so you don't have a troublesome empty shelf).

A linked list, conversely, would be a necklace. When you find you don't like that blue jewel anymore, take it out of the sequence and tie the resulting two ends together. No need to loop through each pearl and displace it just so you can fix your necklace.

SELECT * 
FROM people 
WHERE names ='SMITH'
ORDER BY names asc
limit 10

If you need add group by clause. If you search Smith you would have to sort on something else.

I really wanted to avoid hard resets, this is what I came up with.

A -> B -> C -> D -> HEAD

To go back to A (which is 4 steps back):

git pull                  # Get latest changes
git reset --soft HEAD~4   # Set back 4 steps
git stash                 # Stash the reset
git pull                  # Go back to head
git stash pop             # Pop the reset 
git commit -m "Revert"    # Commit the changes

Just above JSON.parse, use:

var newData = JSON.stringify(userData)

Using the FM format model modifier to get close, as you won't get the trailing zeros after the decimal separator; but you will still get the separator itself, e.g. 50.. You can use rtrim to get rid of that:

select to_char(a, '99D90'),
    to_char(a, '90D90'),
    to_char(a, 'FM90D99'),
    rtrim(to_char(a, 'FM90D99'), to_char(0, 'D'))
from (
    select 50 a from dual
    union all select 50.57 from dual
    union all select 5.57 from dual
    union all select 0.35 from dual
    union all select 0.4 from dual
)
order by a;

TO_CHA TO_CHA TO_CHA RTRIM(
------ ------ ------ ------
   .35   0.35 0.35   0.35
   .40   0.40 0.4    0.4
  5.57   5.57 5.57   5.57
 50.00  50.00 50.    50
 50.57  50.57 50.57  50.57

Note that I'm using to_char(0, 'D') to generate the character to trim, to match the decimal separator - so it looks for the same character, , or ., as the first to_char adds.

The slight downside is that you lose the alignment. If this is being used elsewhere it might not matter, but it does then you can also wrap it in an lpad, which starts to make it look a bit complicated:

...
lpad(rtrim(to_char(a, 'FM90D99'), to_char(0, 'D')), 6)
...

TO_CHA TO_CHA TO_CHA RTRIM( LPAD(RTRIM(TO_CHAR(A,'FM
------ ------ ------ ------ ------------------------
   .35   0.35 0.35   0.35     0.35
   .40   0.40 0.4    0.4       0.4
  5.57   5.57 5.57   5.57     5.57
 50.00  50.00 50.    50         50
 50.57  50.57 50.57  50.57   50.57

Use this if you're in the fragment.

@Override
        public void onDestroy() {
            super.onDestroy();

            getFragmentManager().beginTransaction().remove((Fragment) youfragmentname).commitAllowingStateLoss();

        }

PNG has 2 advantages: it has smaller size and it's more widely used and supported (except in case favicons). As mentioned before ICO, can have multiple size icons, which is useful for desktop applications, but not too much for websites. I would recommend you to put a favicon.ico in the root of your application. An if you have access to the Head of your website pages use the tag to point to a png file. So older browser will show the favicon.ico and newer ones the png.

To create Png and Icon files I would recommend The Gimp.

var people = 
[{"name": 'a75',"item1": "false","item2":"false"}, 
{"name": 'z32',"item1": "true","item2":  "false"}, 
{"name": 'e77',"item1": "false","item2": "false"}]; 

function mycomparator(a,b) {   return parseInt(a.name) - parseInt(b.name);  } 
people.sort(mycomparator); 

something along the lines of this maybe (or as we used to say, this should work).

the loginuser class uses a trait called AuthenticatesUsers

if you open that trait you will see the functions (this applies for other controllers) Illuminate\Foundation\Auth\AuthenticatesUsers;

here is the trait code https://github.com/laravel/framework/blob/5.1/src/Illuminate/Foundation/Auth/AuthenticatesUsers.php

sorry for the bad format, im using my phone

also Auth::routes() it just calls a function that returns the auth routes thats it (i think)

<script>

function reloadIt() {
    if (window.location.href.substr(-2) !== "?r") {
        window.location = window.location.href + "?r";
    }
}

setTimeout('reloadIt()', 1000)();

</script>

this works perfectly

Code for Swift 4.2 and 5 code:

var window: UIWindow?


func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool { 
     self.window = UIWindow(frame: UIScreen.main.bounds)

     let storyboard = UIStoryboard(name: "Main", bundle: nil)

     let initialViewController = storyboard.instantiateViewController(withIdentifier: "dashboardVC")

     self.window?.rootViewController = initialViewController
     self.window?.makeKeyAndVisible()
}

And for Xcode 11+ and for Swift 5+ :

class SceneDelegate: UIResponder, UIWindowSceneDelegate {

     var window: UIWindow?

     func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
         if let windowScene = scene as? UIWindowScene {
             let window = UIWindow(windowScene: windowScene)

              window.rootViewController = // Your RootViewController in here

              self.window = window
              window.makeKeyAndVisible()
         }
    }
}

Your compound PRIMARY KEY specification already does what you want. Omit the line that's giving you a syntax error, and omit the redundant CONSTRAINT (already implied), too:

 CREATE TABLE tags
      (
               question_id INTEGER NOT NULL,
               tag_id SERIAL NOT NULL,
               tag1 VARCHAR(20),
               tag2 VARCHAR(20),
               tag3 VARCHAR(20),
               PRIMARY KEY(question_id, tag_id)
      );

NOTICE:  CREATE TABLE will create implicit sequence "tags_tag_id_seq" for serial column "tags.tag_id"
    NOTICE:  CREATE TABLE / PRIMARY KEY will create implicit index "tags_pkey" for table "tags"
    CREATE TABLE
    pg=> \d tags
                                         Table "public.tags"
       Column    |         Type          |                       Modifiers       
    -------------+-----------------------+-------------------------------------------------------
     question_id | integer               | not null
     tag_id      | integer               | not null default nextval('tags_tag_id_seq'::regclass)
     tag1        | character varying(20) |
     tag2        | character varying(20) |
     tag3        | character varying(20) |
    Indexes:
        "tags_pkey" PRIMARY KEY, btree (question_id, tag_id)

Just a slight modification to @JohnnyHK answer

collection.find().sort({datefield: -1}, function(err, cursor){...});

In many use cases we wish to have latest records to be returned (like for latest updates / inserts).

You can use conda remove --force.

The documentation says:

--force               Forces removal of a package without removing packages
                      that depend on it. Using this option will usually
                      leave your environment in a broken and inconsistent
                      state

Swift 4 & 5

To encode a parameter in URL I find using .alphanumerics character set the easiest option:

let encoded = parameter.addingPercentEncoding(withAllowedCharacters: .alphanumerics)
let url = "http://www.example.com/?name=\(encoded!)"

Using any of the standard Character Sets for URL Encoding (like URLQueryAllowedCharacterSet or URLHostAllowedCharacterSet) won't work, because they do not exclude = or & characters.

Note that by using .alphanumerics it will encode some characters that do not need to be encoded (like -, ., _ or ~ -– see 2.3. Unreserved characters in RFC 3986). I find using .alphanumerics simpler than constructing a custom character set and do not mind some additional characters to be encoded. If that bothers you, construct a custom character set as is described in How to percent encode a URL String, like for example:

var allowed = CharacterSet.alphanumerics
allowed.insert(charactersIn: "-._~") // as per RFC 3986
let encoded = parameter.addingPercentEncoding(withAllowedCharacters: allowed)
let url = "http://www.example.com/?name=\(encoded!)"

Warning: The encoded parameter is force unwrapped. For invalid unicode string it might crash. See Why is the return value of String.addingPercentEncoding() optional?. Instead of force unwrapping encoded! you can use encoded ?? "" or use if let encoded = ....

Pure js approach:

var elem = document.getElementsByClassName('parent');
alert(elem[0].hasAttribute('id'));

JsFiddle Demo

You could use the substr function please check following example,

$string1 = "tarunmodi";
$first4 = substr($string1, 4);
echo $first4;

Output: nmodi

Since x!=x returns the same boolean array with np.isnan(x) (because np.nan!=np.nan would return True), you could also write:

np.argwhere(x!=x)

However, I still recommend writing np.argwhere(np.isnan(x)) since it is more readable. I just try to provide another way to write the code in this answer.

okay it solved, here is my final code

if($(this).width() > $(this).height()) { 
 $(this).css('width',MaxPreviewDimension+'px');
 $(this).css('height','auto');
} else {
 $(this).css('height',MaxPreviewDimension+'px');
 $(this).css('width','auto');
}

Thanks guys

There's MonoDevelop, which I occasionally use when I want to do some light C# coding when in Linux. It's nothing close to VS.Net, but it works for small projects. I really don't think most of the alternatives people have listed come anywhere close to VS.Net.

There seems to be a bug in chromedriver for that (the problem is that it's marked as won't fix) --> GitHub Link

(place a bounty on FreedomSponsors perhaps?)

There's a workaround suggested at comment #27. Maybe it'll work for you-

If you're interested in how an open source project does stuff like this, you can check out the Terracotta class (Os.java) that handles this junk here:

• http://svn.terracotta.org/svn/tc/dso/trunk/code/base/common/src/com/tc/util/runtime/
• http://svn.terracotta.org/svn/tc/dso/tags/2.6.4/code/base/common/src/com/tc/util/runtime/

And you can see a similar class to handle JVM versions (Vm.java and VmVersion.java) here:

• http://svn.terracotta.org/svn/tc/dso/trunk/common/src/main/java/com/tc/util/runtime/

I had a similar issue however found a different solution than what I have read. I came to my fix after reading P Walker's answer.

My issue happened when I named my resource file for Japanese language incorrectly. Long story short I was trying to create a Resource for Japanese but I accidentally named it localized.jp.resx. I then realized that the iso language code is ja not jp for Japanese. Once I changed the file name to localized.ja.resx and deleted everything that was in the designer file it fixed my problem.

This is what fixed my problem hopefully it helps someone else.

Task

Extract substring between two string (excluding this two strings)

Solution

let allText = "Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum";
let textBefore = "five centuries,";
let textAfter = "electronic typesetting";
var regExp = new RegExp(`(?<=${textBefore}\\s)(.+?)(?=\\s+${textAfter})`, "g");
var results = regExp.exec(allText);
if (results && results.length > 1) {
    console.log(results[0]);
}

Android's callOnClick() (added in API 15) can sometimes be a better choice in my experience than performClick(). If a user has selection sounds enabled, then performClick() could cause the user to hear two continuous selection sounds that are somewhat layered on top of each other which can be jarring. (One selection sound for the user's first button click, and then another for the other button's OnClickListener that you're calling via code.)

There is no easy way to do this. I needed this as well, but wanted a function that can take any two variables and test for equality. That includes non-object values, objects, arrays and any level of nesting.

In your question, you mention wanting to ignore the order of the values in an array. My solution doesn't inherently do that, but you can achieve it by sorting the arrays before comparing for equality

I also wanted the option of casting non-objects to strings so that [1,2]===["1",2]

Since my project uses UnderscoreJs, I decided to make it a mixin rather than a standalone function.

You can test it out on http://jsfiddle.net/nemesarial/T44W4/

Here is my mxin:

_.mixin({
  /**
  Tests for the equality of two variables
    valA: first variable
    valB: second variable
    stringifyStatics: cast non-objects to string so that "1"===1
  **/
  equal:function(valA,valB,stringifyStatics){
    stringifyStatics=!!stringifyStatics;

    //check for same type
    if(typeof(valA)!==typeof(valB)){
      if((_.isObject(valA) || _.isObject(valB))){
        return false;
      }
    }

    //test non-objects for equality
    if(!_.isObject(valA)){
      if(stringifyStatics){
        var valAs=''+valA;
        var valBs=''+valB;
        ret=(''+valA)===(''+valB);
      }else{
        ret=valA===valB;
      }
      return ret;
    }

    //test for length
    if(_.size(valA)!=_.size(valB)){
      return false;
    }

    //test for arrays first
    var isArr=_.isArray(valA);

    //test whether both are array or both object
    if(isArr!==_.isArray(valB)){
      return false;
    }

    var ret=true;
    if(isArr){
      //do test for arrays
      _.each(valA,function(val,idx,lst){
        if(!ret){return;}
        ret=ret && _.equal(val,valB[idx],stringifyStatics);
      });
    }else{
      //do test for objects
      _.each(valA,function(val,idx,lst){
        if(!ret){return;}

        //test for object member exists
        if(!_.has(valB,idx)){
          ret=false;
          return;
        }

        // test for member equality
        ret=ret && _.equal(val,valB[idx],stringifyStatics);
      });

    }
    return ret;
  }
});

This is how you use it:

_.equal([1,2,3],[1,2,"3"],true)

To demonstrate nesting, you can do this:

_.equal(
    ['a',{b:'b',c:[{'someId':1},2]},[1,2,3]],
    ['a',{b:'b',c:[{'someId':"1"},2]},["1",'2',3]]
,true);

You can declare the variable final, or make it an instance (or global) variable. If you declare it final, you won't be able to change it later.

Any variable defined in a method and accessed by an anonymous inner class must be final. Otherwise, you could use that variable in the inner class, unaware that if the variable changes in the inner class, and then it is used later in the enclosing scope, the changes made in the inner class did not persist in the enclosing scope. Basically, what happens in the inner class stays in the inner class.

I wrote a more in-depth explanation here. It also explains why instance and global variables do not need to be declared final.

I was following the replies, When editing /etc/group I also deleted this line:

ssl-cert:x:112:postgres

then, when trying to install postgresql, I got this error

Preconfiguring packages ...
dpkg: unrecoverable fatal error, aborting:
 syntax error: unknown group 'ssl-cert' in statoverride file
E: Sub-process /usr/bin/dpkg returned an error code (2)

Putting the "ssl-cert:x:112:postgres" line back in /etc/group seems to fix it (so I was able to install postgresql)

Try Collections.shuffle(list).If usage of this method is barred for solving the problem, then one can look at the actual implementation.

Use git clone with the --depth option set to 1 to create a shallow clone with a history truncated to the latest commit.

For example:

git clone --depth 1 https://github.com/user/repo.git

To also initialize and update any nested submodules, also pass --recurse-submodules and to clone them shallowly, also pass --shallow-submodules.

For example:

git clone --depth 1 --recurse-submodules --shallow-submodules https://github.com/user/repo.git

you have already forwarded the response in catch block:

RequestDispatcher dd = request.getRequestDispatcher("error.jsp");

dd.forward(request, response);

so, you can not again call the :

response.sendRedirect("usertaskpage.jsp");

because it is already forwarded (committed).

So what you can do is: keep a string to assign where you need to forward the response.

    String page = "";
    try {

    } catch (Exception e) {
      page = "error.jsp";
    } finally {
      page = "usertaskpage.jsp";
    }

RequestDispatcher dd=request.getRequestDispatcher(page);
dd.forward(request, response);

In Access 2010, go to the Create tab on the ribbon. Click Macro. An "Action Catalog" panel should appear on the right side of the screen. Underneath, there's a section titled "In This Database." Clicking on one of the macro names should display its code.

In order to avoid to pass this argument i use class derived from Application

public class MyApplication extends Application {

private static Context sContext;

@Override
public void onCreate() {
    super.onCreate();
    sContext=   getApplicationContext();

}

public static Context getContext() {
    return sContext;
}

and invoke MyApplication.getContext() in Helper classes.

Don't forget to update the manifest.

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
package="com.example"> 
      <application 
       android:name=".MyApplication"
       android:allowBackup="true" 
       android:icon="@mipmap/ic_launcher" 
       android:label="@string/app_name"> 
         <activity....>
            ......
         </activity>
     </application> 
</manifest>

For Strings and other types, you just use Array<*>. The reason IntArray and others exist is to prevent autoboxing.

So int[] relates to IntArray where Integer[] relates to Array<Int>.

What is JSONP?

The important thing to remember with jsonp is that it isn't actually a protocol or data type. Its just a way of loading a script on the fly and processing the script that is introduced to the page. In the spirit of JSONP, this means introducing a new javascript object from the server into the client application/ script.

When is JSONP needed?

It is 1 method of allowing one domain to access/ process data from another in the same page asyncronously. Primarily, it is used to override CORS (Cross Origin Resource Sharing) restrictions which would occur with an XHR (ajax) request. Script loads are not subject to CORS restrictions.

How is it done

Introducing a new javascript object from the server can be implemented in many ways, but the most common practice is for the server to implement the execution of a 'callback' function, with the required object passed into it. The callback function is just a function you have already set up on the client which the script you load calls at the point the script loads to process the data passed in to it.

Example:

I have an application which logs all items in someone's home. My application is set up and I now want to retrieve all the items in the main bedroom.

My application is on app.home.com. The apis I need to load data from are on api.home.com.

Unless the server is explicitly set up to allow it, I cannot use ajax to load this data, as even pages on separate subdomains are subject to XHR CORS restrictions.

Ideally, set things up to allow x-domain XHR

Ideally, since the api and app are on the same domain, I might have access to set up the headers on api.home.com. If I do, I can add an Access-Control-Allow-Origin: header item granting access to app.home.com. Assuming the header is set up as follows: Access-Control-Allow-Origin: "http://app.home.com", this is far more secure than setting up JSONP. This is because app.home.com can get everything it wants from api.home.com without api.home.com giving CORS access to the whole internet.

The above XHR solution isn't possible. Set up JSONP On my client script: I set up a function to process the reponse from the server when I make the JSONP call.:

function processJSONPResponse(data) {
    var dataFromServer = data;
}

The server will need to be set up to return a mini script looking something like "processJSONPResponse('{"room":"main bedroom","items":["bed","chest of drawers"]}');" It might be designed to return such a string if something like //api.home.com?getdata=room&room=main_bedroom is called.

Then the client sets up a script tag as such:

var script = document.createElement('script');
script.src = '//api.home.com?getdata=room&room=main_bedroom';

document.querySelector('head').appendChild(script);

This loads the script and immediately calls window.processJSONPResponse() as written/ echo/ printed out by the server. The data passed in as the parameter to the function is now stored in the dataFromServer local variable and you can do with it whatever you need.

Clean up

Once the client has the data, ie. immediately after the script is added to the DOM, the script element can be removed from the DOM:

script.parentNode.removeChild(script);

UPDATE R 
SET R.status = '0' 
FROM dbo.ProductReviews AS R
INNER JOIN dbo.products AS P 
       ON R.pid = P.id 
WHERE R.id = '17190' 
  AND P.shopkeeper = '89137';

To open at a specific line straight from the command line, use:

less +320123 filename

If you want to see the line numbers too:

less +320123 -N filename

You can also choose to display a specific line of the file at a specific line of the terminal, for when you need a few lines of context. For example, this will open the file with line 320123 on the 10th line of the terminal:

less +320123 -j 10 filename

If by configure release/build, you mean you only need one config per makefile, then it is simply a matter and decoupling CC and CFLAGS:

CFLAGS=-DDEBUG
#CFLAGS=-O2 -DNDEBUG
CC=g++ -g3 -gdwarf2 $(CFLAGS)

Depending on whether you can use gnu makefile, you can use conditional to make this a bit fancier, and control it from the command line:

DEBUG ?= 1
ifeq ($(DEBUG), 1)
    CFLAGS =-DDEBUG
else
    CFLAGS=-DNDEBUG
endif

.o: .c
    $(CC) -c $< -o $@ $(CFLAGS)

and then use:

make DEBUG=0
make DEBUG=1

If you need to control both configurations at the same time, I think it is better to have build directories, and one build directory / config.

We now have a more modern way to do this work.

java.time

The java.time framework is bundled with Java 8 and later. See Tutorial. These new classes are inspired by Joda-Time, defined by JSR 310, and extended by the ThreeTen-Extra project. They are a vast improvement over the troublesome old classes, java.util.Date/.Calendar et al.

Note that the 3-4 letter codes like EDT are neither standardized nor unique. Avoid them whenever possible. Learn to use ISO 8601 standard formats instead. The java.time framework may take a stab at translating, but many of the commonly used codes have duplicate values.

By the way, note how java.time by default generates strings using the ISO 8601 formats but extended by appending the name of the time zone in brackets.

String input = "Thu Jun 18 20:56:02 EDT 2009";
DateTimeFormatter formatter = DateTimeFormatter.ofPattern ( "EEE MMM d HH:mm:ss zzz yyyy" , Locale.ENGLISH );
ZonedDateTime zdt = formatter.parse ( input , ZonedDateTime :: from );

Dump to console.

System.out.println ( "zdt : " + zdt );

When run.

zdt : 2009-06-18T20:56:02-04:00[America/New_York]

Adjust Time Zone

For fun let's adjust to the India time zone.

ZonedDateTime zdtKolkata = zdt.withZoneSameInstant ( ZoneId.of ( "Asia/Kolkata" ) );

zdtKolkata : 2009-06-19T06:26:02+05:30[Asia/Kolkata]

Convert to j.u.Date

If you really need a java.util.Date object for use with classes not yet updated to the java.time types, convert. Note that you are losing the assigned time zone, but have the same moment automatically adjusted to UTC.

java.util.Date date = java.util.Date.from( zdt.toInstant() );

You're trying to create a ThingOne by using operator= which isn't going to work (incorrect syntax). Also, you're using a class name as a variable name, that is, ThingOne* ThingOne. Firstly, let's fix the variable names:

private:
    ThingOne* t1;
    ThingTwo* t2;

Since these are pointers, they must point to something. If the object hasn't been constructed yet, you'll need to do so explicitly with new in your BigMommaClass constructor:

BigMommaClass::BigMommaClass(int n1, int n2)
{
    t1 = new ThingOne(100);
    t2 = new ThingTwo(n1, n2);
}

Generally initializer lists are preferred for construction however, so it will look like:

BigMommaClass::BigMommaClass(int n1, int n2)
    : t1(new ThingOne(100)), t2(new ThingTwo(n1, n2))
{ }

$('.tooltip').animate({ opacity: 1, top: "-10px" }, 'slow');

However, this doesn't appear to work on display: none elements (as fadeIn does). So, you might need to put this beforehand:

$('.tooltip').css('display', 'block');
$('.tooltip').animate({ opacity: 0 }, 0);

You can use "transparent" as a colour. In some versions of IE, that comes up as black, but I've not tested it out since the IE6 days.

http://www.researchkitchen.de/blog/archives/css-bordercolor-transparent.php

<?php
ini_set("SMTP", "aspmx.l.google.com");
ini_set("sendmail_from", "[email protected]");

$message = "The mail message was sent with the following mail setting:\r\nSMTP = aspmx.l.google.com\r\nsmtp_port = 25\r\nsendmail_from = [email protected]";

$headers = "From: [email protected]";

mail("[email protected]", "Testing", $message, $headers);
echo "Check your email now....&lt;BR/>";
?>

or, for more details, read on.

this worked fine for me:

<div class="card card-body " style="height:80% !important">

forcing our CSS over the bootstraps general CSS.

Follow the below steps:

1.Goto Help -> Install new Software
2.Give address http://download.eclipse.org/releases/oxygen and name as your choice.
3.Search for Java EE and choose 1.Eclipse Java EE Developer Tools 
4.Search for JST and choose 2.JST Server Adapters 3.JST Server Adapters 
5.Click next and accept the license agreement.

Find the server option in the window-->preferences and add server as you need

The array declaration should be:

Car[] garage = new Car[100];

You can also just assign directly:

garage[1] = new Car("Blue");

Maybe

mysql> show processlist;

Starting with Node.js version 13 you can take advantage of ES6 Modules.

export function foo() {
    return 'foo';
}

export function bar() {
    return foo();
}

Following the Class approach:

class MyClass {

    foo() {
        return 'foo';
    }

    bar() {
        return this.foo();
    }
}

module.exports = new MyClass();

This will instantiate the class only once, due to Node's module caching:
https://nodejs.org/api/modules.html#modules_caching

I was asking the same question just now after a quick google I found that There is a pair class in .NET except its in the System.Web.UI ^ ~ ^ (http://msdn.microsoft.com/en-us/library/system.web.ui.pair.aspx) goodness knows why they put it there instead of the collections framework

The command clang is for C, and the command clang++ is for C++.

Invert match using grep -v:

grep -v "unwanted word" file pattern

I go against convention here. I don't like typedef's to base types. I think it's a useless indirection that removes value.

1. When I see the base type in your source I will instantly understand it. If it's a typedef I have to look it up to see what I'm really dealing with.
2. When porting to another compiler or adding another library their set of typedefs may conflict and cause issues that are difficult to debug. I just got done dealing with this in fact. In one library boolean was typedef'ed to int, and in mingw/gcc it's typedef'ed to a char.

TextView view = (TextView) findViewById(R.id.textView);
view.setText("Add your text here");
view.setVisibility(View.VISIBLE);

A little googling, gives me these results:

RewriteEngine On
RewriteBase /
RewriteRule ^index.(.*)?$ http://domain.com/subfolder/ [r=301]

This will redirect any attempt to access a file named index.something to your subfolder, whether the file exists or not.

Or try this:

RewriteCond %{HTTP_HOST} !^www.sample.com$ [NC]
RewriteRule ^(.*)$ %{HTTP_HOST}/samlse/$1 [R=301,L]

I haven't done much redirect in the .htaccess file, so I'm not sure if this will work.

(Update) V5.1 & Hooks (Requires React >= 16.8)

You can use useHistory, useLocation and useRouteMatch in your component to get match, history and location .

const Child = () => {
  const location = useLocation();
  const history = useHistory();
  const match = useRouteMatch("write-the-url-you-want-to-match-here");

  return (
    <div>{location.pathname}</div>
  )
}

export default Child

(Update) V4 & V5

You can use withRouter HOC in order to inject match, history and location in your component props.

class Child extends React.Component {
  static propTypes = {
    match: PropTypes.object.isRequired,
    location: PropTypes.object.isRequired,
    history: PropTypes.object.isRequired
  }

  render() {
    const { match, location, history } = this.props

    return (
      <div>{location.pathname}</div>
    )
  }
}

export default withRouter(Child)

(Update) V3

You can use withRouter HOC in order to inject router, params, location, routes in your component props.

class Child extends React.Component {

  render() {
    const { router, params, location, routes } = this.props

    return (
      <div>{location.pathname}</div>
    )
  }
}

export default withRouter(Child)

Original answer

If you don't want to use the props, you can use the context as described in React Router documentation

First, you have to set up your childContextTypes and getChildContext

class App extends React.Component{

  getChildContext() {
    return {
      location: this.props.location
    }
  }

  render() {
    return <Child/>;
  }
}

App.childContextTypes = {
    location: React.PropTypes.object
}

Then, you will be able to access to the location object in your child components using the context like this

class Child extends React.Component{

   render() {
     return (
       <div>{this.context.location.pathname}</div>
     )
   }

}

Child.contextTypes = {
    location: React.PropTypes.object
 }

This is working for me

Podfile:

platform :ios, '9.0'
use_frameworks!

target '<Your Target Name>' do
pod 'SwiftGifOrigin', '~> 1.7.0'
end

Usage:

// An animated UIImage
let jeremyGif = UIImage.gif(name: "jeremy")

// A UIImageView with async loading
let imageView = UIImageView()
imageView.loadGif(name: "jeremy")

// A UIImageView with async loading from asset catalog(from iOS9)
let imageView = UIImageView()
imageView.loadGif(asset: "jeremy")

For more information follow this link: https://github.com/swiftgif/SwiftGif

I would use have an application redirect a user to your site with an application id parameter, once the user approves the request generate a unique token that is used by the other app for authentication. This way the other applications are not handling user credentials and other applications can be added, removed and managed by users. Foursquare and a few other sites authenticate this way and its very easy to implement as the other application.

I think the best first approach is to make sure to turn on detailed error messages via your web.config file, like this:

<configuration>
    <system.webServer>
        <httpErrors errorMode="Detailed"></httpErrors>
    </system.webServer>
</configuration>

After doing this, you should get a more detailed error message from the server.

In my particular case, the more detailed error pointed out that my <defaultDocument> section of the web.config file was not allowed at the folder level where I'd placed my web.config. It said

This configuration section cannot be used at this path. This happens when the section is locked at a parent level. Locking is either by default (overrideModeDefault="Deny"), or set explicitly by a location tag with overrideMode="Deny" or the legacy allowOverride="false". "

Python opens files almost in the same way as in C:

• r+ Open for reading and writing. The stream is positioned at the beginning of the file.

• a+ Open for reading and appending (writing at end of file). The file is created if it does not exist. The initial file position for reading is at the beginning of the file, but output is appended to the end of the file (but in some Unix systems regardless of the current seek position).

You need to group on the grade field. This query should give you what your looking for in pretty much any database.

    Select Grade, CountofGrade / sum(CountofGrade) *100 
    from
    (
    Select Grade, Count(*) as CountofGrade
    From Grades
    Group By Grade) as sub
    Group by Grade

You should specify the system you're using.

Just a side comment, Before adding support for multidex - make sure you are not adding unnecessary dependencies.

For example In the official Facebook analytics guide

They clearly state that you should add the following dependency:

implementation 'com.facebook.android:facebook-android-sdk:[4,5)'

which is actually the entire FacebookSDK - so if you need for example just the Analytics you need to replace it with:

implementation 'com.facebook.android:facebook-core:5.+'

Facebook partial SDK options

1) First you need to generate EDMX model using your database. To do that you should add new item to your project:

• Select ADO.NET Entity Data Model from the Templates list.
• On the Choose Model Contents page, select the Generate from Database option and click Next.
• Choose your database.
• On the Choose Your Database Objects page, check the Tables. Choose Views or Stored Procedures if you need.

So now you have Model1.edmx file in your project.

2) To generate classes using your model:

• Open your EDMX model designer.
• On the design surface Right Click –> Add Code Generation Item…
• Select Online templates.
• Select EF 4.x DbContext Generator for C#.
• Click ‘Add’.

Notice that two items are added to your project:

• Model1.tt (This template generates very simple POCO classes for each entity in your model)
• Model1.Context.tt (This template generates a derived DbContext to use for querying and persisting data)

3) Read/Write Data example:

 var dbContext = new YourModelClass(); //class derived from DbContext
 var contacts = from c in dbContext.Contacts select c; //read data
 contacts.FirstOrDefault().FirstName = "Alex"; //edit data
 dbContext.SaveChanges(); //save data to DB

Don't forget that you need 4.x version of EntityFramework. You can download EF 4.1 here: Entity Framework 4.1.

npm ci

Alternatively, as of npm cli v6.5.0 you can use the backronym:

npm clean-install

https://github.com/npm/cli/releases/tag/v6.5.0 https://github.com/npm/cli/commit/fc1a8d185fc678cdf3784d9df9eef9094e0b2dec

I have a slightly different perspective on the difference between a DATETIME and a TIMESTAMP. A DATETIME stores a literal value of a date and time with no reference to any particular timezone. So, I can set a DATETIME column to a value such as '2019-01-16 12:15:00' to indicate precisely when my last birthday occurred. Was this Eastern Standard Time? Pacific Standard Time? Who knows? Where the current session time zone of the server comes into play occurs when you set a DATETIME column to some value such as NOW(). The value stored will be the current date and time using the current session time zone in effect. But once a DATETIME column has been set, it will display the same regardless of what the current session time zone is.

A TIMESTAMP column on the other hand takes the '2019-01-16 12:15:00' value you are setting into it and interprets it in the current session time zone to compute an internal representation relative to 1/1/1970 00:00:00 UTC. When the column is displayed, it will be converted back for display based on whatever the current session time zone is. It's a useful fiction to think of a TIMESTAMP as taking the value you are setting and converting it from the current session time zone to UTC for storing and then converting it back to the current session time zone for displaying.

If my server is in San Francisco but I am running an event in New York that starts on 9/1/1029 at 20:00, I would use a TIMESTAMP column for holding the start time, set the session time zone to 'America/New York' and set the start time to '2009-09-01 20:00:00'. If I want to know whether the event has occurred or not, regardless of the current session time zone setting I can compare the start time with NOW(). Of course, for displaying in a meaningful way to a perspective customer, I would need to set the correct session time zone. If I did not need to do time comparisons, then I would probably be better off just using a DATETIME column, which will display correctly (with an implied EST time zone) regardless of what the current session time zone is.

TIMESTAMP LIMITATION

The TIMESTAMP type has a range of '1970-01-01 00:00:01' UTC to '2038-01-19 03:14:07' UTC and so it may not usable for your particular application. In that case you will have to use a DATETIME type. You will, of course, always have to be concerned that the current session time zone is set properly whenever you are using this type with date functions such as NOW().

Because $xml->xpath always return an array, and strlen expects a string.

I believe, answer is totally dependent on the question, which has been asked. I mean, if question is

Can we directly access the private field of the super-class from their sub-class ?

Then answer is No, if we go through the access specifier details, it is mentioned, private members are accessible only within the class itself.

But, if question is

Can we access the private field of the super-class from their sub-class ?

Which means, it doesn't matters, what you will do to access the private member. In that case, we can make public method in the super-class and you can access the private member. So, in this case you are creating one interface/bridge to access the private member.

Other OOPs language like C++, have the friend function concept, by which we can access the private member of other class.

You can use /* tslint:disable-next-line */ to locally disable tslint. However, as this is a compiler error disabling tslint might not help.

You can always temporarily cast $ to any:

delete ($ as any).summernote.options.keyMap.pc.TAB

which will allow you to access whatever properties you want.

Edit: As of Typescript 2.6, you can now bypass a compiler error/warning for a specific line:

if (false) {
    // @ts-ignore: Unreachable code error
    console.log("hello");
}

Note that the official docs "recommend you use [this] very sparingly". It is almost always preferable to cast to any instead as that better expresses intent.

Either the parameter supplied for ZIP_CODE is larger (in length) than ZIP_CODEs column width or the parameter supplied for CITY is larger (in length) than CITYs column width.

It would be interesting to know the values supplied for the two ? placeholders.

You can also use Url.Action for the path instead like so:

$.ajax({
        url: "@Url.Action("Holiday", "Calendar", new { area = "", year= (val * 1) + 1 })",                
        type: "GET",           
        success: function (partialViewResult) {            
            $("#refTable").html(partialViewResult);
        }
    });

I wanted to display the first 300 words of a news story as a preview which unfortunately meant that if a story had an image within the first 300 words then it was displayed in the list of previews which really messed with my layout. I used the above code to hide all of the images from the string taken from my database and it works wonderfully!

$news = $row_latest_news ['content'];
$news = preg_replace("/<img[^>]+\>/i", "", $news); 
if (strlen($news) > 300){
echo substr($news, 0, strpos($news,' ',300)).'...';
} 
else { 
echo $news; 
}

By definition arrays are fixed size. You can use instead an Arraylist wich is that, a "dynamic size" array. Actually what happens is that the VM "adjust the size"* of the array exposed by the ArrayList.

See also

*using back-copy arrays

You should be denoting the call by reference in the function definition, not the actual call. Since PHP started showing the deprecation errors in version 5.3, I would say it would be a good idea to rewrite the code.

From the documentation:

There is no reference sign on a function call - only on function definitions. Function definitions alone are enough to correctly pass the argument by reference. As of PHP 5.3.0, you will get a warning saying that "call-time pass-by-reference" is deprecated when you use & in foo(&$a);.

For example, instead of using:

// Wrong way!
myFunc(&$arg);               # Deprecated pass-by-reference argument
function myFunc($arg) { }

Use:

// Right way!
myFunc($var);                # pass-by-value argument
function myFunc(&$arg) { }

Make a call to the DB searching with myid (Id of the row) and get back specific columns:

var columns = db.Notifications
                .Where(x => x.Id == myid)
                .Select(n => new { n.NotificationTitle, 
                                   n.NotificationDescription, 
                                   n.NotificationOrder });

Refer to the below link,

https://angular.io/api/common/DatePipe

**Code Sample**

@Component({
 selector: 'date-pipe',
 template: `<div>
   <p>Today is {{today | date}}</p>
   <p>Or if you prefer, {{today | date:'fullDate'}}</p>
   <p>The time is {{today | date:'h:mm a z'}}</p>
 </div>`
})
// Get the current date and time as a date-time value.
export class DatePipeComponent {
  today: number = Date.now();
}

{{today | date:'MM/dd/yyyy'}} output: 17/09/2019

or

{{today | date:'shortDate'}} output: 17/9/19

Use .net:

[System.IO.Path]::GetFileName("c:\foo.txt") returns foo.txt. [System.IO.Path]::GetFileNameWithoutExtension("c:\foo.txt") returns foo

Try

isSubstring = first in theOther

To further add missing points here, as per the request by Jaskey

Database version is stored within the SQLite database file.

catch is the constructor

SQLiteOpenHelper(Context context, String name, SQLiteDatabase.CursorFactory factory, int version)

So when the database helper constructor is called with a name (2nd param), platform checks if the database exists or not and if the database exists, it gets the version information from the database file header and triggers the right call back

As already explained in the older answer, if the database with the name doesn't exists, it triggers onCreate.

Below explanation explains onUpgrade case with an example.

Say, your first version of application had the DatabaseHelper (extending SQLiteOpenHelper) with constructor passing version as 1 and then you provided an upgraded application with the new source code having version passed as 2, then automatically when the DatabaseHelper is constructed, platform triggers onUpgrade by seeing the file already exists, but the version is lower than the current version which you have passed.

Now say you are planing to give a third version of application with db version as 3 (db version is increased only when database schema is to be modified). In such incremental upgrades, you have to write the upgrade logic from each version incrementally for a better maintainable code

Example pseudo code below:

@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
  switch(oldVersion) {
    case 1:
       //upgrade logic from version 1 to 2
    case 2:
       //upgrade logic from version 2 to 3
    case 3:
       //upgrade logic from version 3 to 4
       break;
    default:
       throw new IllegalStateException(
                "onUpgrade() with unknown oldVersion " + oldVersion);
  }
}

Notice the missing break statement in case 1 and 2. This is what I mean by incremental upgrade.

Say if the old version is 2 and new version is 4, then the logic will upgrade the database from 2 to 3 and then to 4

If old version is 3 and new version is 4, it will just run the upgrade logic for 3 to 4

This is a pretty clean way I guess and tricky

class A(object):
    def __init__(self, e, f, g):

        self.__dict__.update({k: v for k,v in locals().items() if k!='self'})
    def bc(self):
        print(self.f)


k = A(e=5, f=6, g=12)
k.bc() # >>>6

Use the retainAll() method of Set:

Set<String> s1;
Set<String> s2;
s1.retainAll(s2); // s1 now contains only elements in both sets

If you want to preserve the sets, create a new set to hold the intersection:

Set<String> intersection = new HashSet<String>(s1); // use the copy constructor
intersection.retainAll(s2);

The javadoc of retainAll() says it's exactly what you want:

Retains only the elements in this set that are contained in the specified collection (optional operation). In other words, removes from this set all of its elements that are not contained in the specified collection. If the specified collection is also a set, this operation effectively modifies this set so that its value is the intersection of the two sets.

SELECT CONVERT(CAST(column as BINARY) USING utf8) as column FROM table