Using Apollo Server 2.

Per https://github.com/apollographql/apollo-client/issues/4778#issuecomment-509638071, this solved my problem:

try 'ws://localhost:4000/graphql'

...since incoming and outgoing requests now use the same address.

Can refer to here: https://ss64.com/nt/start.html

start "" /D F:\- Big Packets -\kitterengine\Common\ /W Template.bat

I think nt86's solution is the most appropriate because it leverages the underlying Windows infrastructure (certificate store). But it doesn't explain how to install python-certifi-win32 to start with since pip is non functional.

The trick is to use --trustedhost to install python-certifi-win32 and then after that, pip will automatically use the windows certificate store to load the certificate used by the proxy.

So in a nutshell, you should do:

pip install python-certifi-win32 -trustedhost pypi.org

and after that you should be good to go

I found an event OnError in confluent Kafka:

consumer.OnError += Consumer_OnError;

 private void Consumer_OnError(object sender, Error e)
    {
        Debug.Log("connection error: "+ e.Reason);
        ConsumerConnectionError(e);
    }

And its documentation in code:

    //
    // Summary:
    //     Raised on critical errors, e.g. connection failures or all brokers down. Note
    //     that the client will try to automatically recover from errors - these errors
    //     should be seen as informational rather than catastrophic
    //
    // Remarks:
    //     Executes on the same thread as every other Consumer event handler (except OnLog
    //     which may be called from an arbitrary thread).
    public event EventHandler<Error> OnError;

Consider TCP over ATM. ATM uses 48 byte frames, but clearly TCP packets can be bigger than that. A frame is the chunk of data sent as a unit over the data link (Ethernet, ATM). A packet is the chunk of data sent as a unit over the layer above it (IP). If the data link is made specifically for IP, as Ethernet and WiFi are, these will be the same size and packets will correspond to frames.

In /etc/my.cnf add:

  max_allowed_packet=32M

It worked for me. You can verify by going into PHPMyAdmin and opening a SQL command window and executing:

SHOW VARIABLES LIKE  'max_allowed_packet'

It's probably worth mentioning that for http/https some people proxy their browser traffic through Burp/ZAP or another intercepting "attack proxy". A thread that covers options for this on Android devices can be found here: https://android.stackexchange.com/questions/32366/which-browser-does-support-proxies

Find the IP address of the first eth/wlan entry in ifconfig that's RUNNING:

import itertools
import os
import re

def get_ip():
    f = os.popen('ifconfig')
    for iface in [' '.join(i) for i in iter(lambda: list(itertools.takewhile(lambda l: not l.isspace(),f)), [])]:
        if re.findall('^(eth|wlan)[0-9]',iface) and re.findall('RUNNING',iface):
            ip = re.findall('(?<=inet\saddr:)[0-9\.]+',iface)
            if ip:
                return ip[0]
    return False

None of the above worked for me because my devices are in a balance-rr bond. Querying either would say the same MAC address with ip l l, ifconfig, or /sys/class/net/${device}/address, so one of them is correct, and one is unknown.

But this works if you haven't renamed the device (any tips on what I missed?):

udevadm info -q all --path "/sys/class/net/${device}"

And this works even if you rename it (eg. ip l set name x0 dev p4p1):

cat /proc/net/bonding/bond0

or my ugly script that makes it more parsable (untested driver/os/whatever compatibility):

awk -F ': ' '
         $0 == "" && interface != "" {
            printf "%s %s %s\n", interface, mac, status;
            interface="";
            mac=""
         }; 
         $1 == "Slave Interface" {
            interface=$2
         }; 
         $1 == "Permanent HW addr" {
            mac=$2
         };
         $1 == "MII Status" {
            status=$2
         };
         END {
            printf "%s %s %s\n", interface, mac, status
         }' /proc/net/bonding/bond0

Here is the optimized code snippet to remove empty arrays/objects as well:

function removeNullsInObject(obj) {
    if( typeof obj === 'string' ){ return; }
    $.each(obj, function(key, value){
        if (value === "" || value === null){
            delete obj[key];
        } else if ($.isArray(value)) {
            if( value.length === 0 ){ delete obj[key]; return; }
            $.each(value, function (k,v) {
                removeNullsInObject(v);
            });
        } else if (typeof value === 'object') {
            if( Object.keys(value).length === 0 ){ 
                delete obj[key]; return; 
            }
            removeNullsInObject(value);
        }
    }); 
 }

Thanks @Alexis king :)

I think that you should make the reference to your config file

26399:C 16 Jan 08:51:13.413 # Warning: no config file specified, using the default config. In order to specify a config file use ./redis-server /path/to/redis.conf

you can try to start your redis server like

./redis-server /path/to/redis-stable/redis.conf

  /sbin/ifconfig eth0 | grep 'inet addr:' | cut -d: -f2 | awk '{ print $1}'

SBT solution stated above did not work for me. What worked for me is excluding slf4j-log4j12

//dependencies with exclusions_x000D_
libraryDependencies ++= Seq(_x000D_
    //depencies_x000D_
).map(_.exclude("org.slf4j","slf4j-log4j12"))

Manoj answer above is correct, but another option is to use MESSAGE.encode() or encode('utf-8') to convert to bytes. bytes and encode are mostly the same, encode is compatible with python 2. see here for more

full code:

import socket

UDP_IP = "127.0.0.1"
UDP_PORT = 5005
MESSAGE = "Hello, World!"

print("UDP target IP: %s" % UDP_IP)
print("UDP target port: %s" % UDP_PORT)
print("message: %s" % MESSAGE)

sock = socket.socket(socket.AF_INET, # Internet
                     socket.SOCK_DGRAM) # UDP
sock.sendto(MESSAGE.encode(), (UDP_IP, UDP_PORT))

Check your server config file /etc/mysql/my.cnf - verify bind_address is not set to 127.0.0.1. Set it to 0.0.0.0 or comment it out then restart server with:

sudo service mysql restart

The problem is mostly due to a MySQL service that is not running, so make sure it is. If it isn't, run this CMD with administrator privilege in order to start it:

sc start [Your MySQL Service name]

There's no fixed time for retransmission. Simple implementations estimate the RTT (round-trip-time) and if no ACK to send data has been received in 2x that time then they re-send.

They then double the wait-time and re-send once more if again there is no reply. Rinse. Repeat.

More sophisticated systems make better estimates of how long it should take for the ACK as well as guesses about exactly which data has been lost.

The bottom-line is that there is no hard-and-fast rule about exactly when to retransmit. It's up to the implementation. All retransmissions are triggered solely by the sender based on lack of response from the receiver.

TCP never drops data so no, there is no way to indicate a server should forget about some segment.

On the server, try:

netstat -an 

and look to see if tcp port 22 is opened (use findstr in Windows or grep in Unix).

If you don't have avahi installed then it's probably cups.

View and check the reference paths in your csproj.

I had removed references to System.Web.Mvc (and others) and readded them to a custom path. C:\Project\OurWebReferences

However, after doing this, the reference path in the still csproj did not change. WAS

<Reference Include="System.Web.Mvc, Version=4.0.0.1, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
  <SpecificVersion>False</SpecificVersion>
  <HintPath>..\..\..\..\OurWebProject\bin\Debug\System.Web.Mvc.dll</HintPath>
</Reference>

Changed to manually

<Reference Include="System.Web.Mvc, Version=4.0.0.1, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
  <SpecificVersion>False</SpecificVersion>
        <HintPath>..\..\..\..\OurWebReferences\System.Web.Mvc.dll</HintPath>
</Reference>

Paths are an example only.

Here is something:

char const hex_chars[16] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };

for( int i = data; i < data_length; ++i )
{
    char const byte = data[i];

    string += hex_chars[ ( byte & 0xF0 ) >> 4 ];
    string += hex_chars[ ( byte & 0x0F ) >> 0 ];
}

The receiver must set port of receiver to match port set in sender DatagramPacket. For debugging try listening on port > 1024 (e.g. 8000 or 9000). Ports < 1024 are typically used by system services and need admin access to bind on such a port.

If the receiver sends packet to the hard-coded port it's listening to (e.g. port 57) and the sender is on the same machine then you would create a loopback to the receiver itself. Always use the port specified from the packet and in case of production software would need a check in any case to prevent such a case.

Another reason a packet won't get to destination is the wrong IP address specified in the sender. UDP unlike TCP will attempt to send out a packet even if the address is unreachable and the sender will not receive an error indication. You can check this by printing the address in the receiver as a precaution for debugging.

In the sender you set:

 byte [] IP= { (byte)192, (byte)168, 1, 106 };
 InetAddress address = InetAddress.getByAddress(IP);

but might be simpler to use the address in string form:

 InetAddress address = InetAddress.getByName("192.168.1.106");

In other words, you set target as 192.168.1.106. If this is not the receiver then you won't get the packet.

Here's a simple UDP Receiver that works :

import java.io.IOException;
import java.net.*;

public class Receiver {

    public static void main(String[] args) {
        int port = args.length == 0 ? 57 : Integer.parseInt(args[0]);
        new Receiver().run(port);
    }

    public void run(int port) {    
      try {
        DatagramSocket serverSocket = new DatagramSocket(port);
        byte[] receiveData = new byte[8];
        String sendString = "polo";
        byte[] sendData = sendString.getBytes("UTF-8");

        System.out.printf("Listening on udp:%s:%d%n",
                InetAddress.getLocalHost().getHostAddress(), port);     
        DatagramPacket receivePacket = new DatagramPacket(receiveData,
                           receiveData.length);

        while(true)
        {
              serverSocket.receive(receivePacket);
              String sentence = new String( receivePacket.getData(), 0,
                                 receivePacket.getLength() );
              System.out.println("RECEIVED: " + sentence);
              // now send acknowledgement packet back to sender     
              DatagramPacket sendPacket = new DatagramPacket(sendData, sendData.length,
                   receivePacket.getAddress(), receivePacket.getPort());
              serverSocket.send(sendPacket);
        }
      } catch (IOException e) {
              System.out.println(e);
      }
      // should close serverSocket in finally block
    }
}

IIS was the main offender for me. My IIS was running and it restrains any new socket connections from opening. The problem resolved for me by stopping IIS by running the command "iisreset -stop"

My random guess is: TV uses x264 codec which has a commercial license (otherwise TeamViewer would have to release their source code). At some point (more than 5 years ago), I recall main developer of x264 wrote an article about improvements he made for low delay encoding (if you delay by a few frames encoders can compress better), plus he mentioned some other improvements that were relevant for TeamViewer-like use. In that post he mentioned playing quake over video stream with no noticeable issues. Back then I was kind of sure who was the sponsor of these improvements, as TeamViewer was pretty much the only option at that time. x264 is an open source implementation of H264 video codec, and it's insanely good implementation, it's the best one. At the same time it's extremely well optimized. Most likely due to extremely good implementation of x264 you get much better results with TV at lower CPU load. AnyDesk and Chrome Remote Desk use libvpx, which isn't as good as x264 (optimization and video quality wise).

However, I don't think TeamView can beat microsoft's RDP. To me it's the best, however it works between windows PCs or from Mac to Windows only. TV works even from mobiles.

Update: article was written in January 2010, so that work was done roughly 10 years ago. Also, I made a mistake: he played call of duty, not quake. When you posted your question, if my guess is correct, TeamViewer had been using that work for 3 years. Read that blog post from web archive: x264: the best low-latency video streaming platform in the world. When I read the article back in 2010, I was sure that the "startup–which has requested not to be named" that the author mentions was TeamViewer.

If getting this error while performing a backup, max_allowed_packet can be set in the my.cnf particularly for mysqldump.

[mysqldump]
max_allowed_packet=512M

I kept getting this error while performing a mysqldump and I did not understand because I had this set in my.cnf under the [mysqld] section. Once I figured out I could set it for [mysqldump] and I set the value, my backups completed without issue.

If your Destination server is on another cloud or data-center then need to add host-entry of MSDTC service(Destination Server) in your source server.

Try this one if problem doesn't resolved, After enable the MSDTC settings.

Socket connections in Android are the same as in Java: http://www.oracle.com/technetwork/java/socket-140484.html

Things you need to be aware of:

1. If phone goes to sleep your app will no longer execute, so socket will eventually timeout. You can prevent this with wake lock. This will eat devices battery tremendously - I know I wouldn't use that app.
2. If you do this constantly, even when your app is not active, then you need to use Service.
3. Activities and Services can be killed off by OS at any time, especially if they are part of an inactive app.

Take a look at AlarmManager, if you need scheduled execution of your code.

Do you need to run your code and receive data even if user does not use the app any more (i.e. app is inactive)?

On the command prompt, do:

netstat -nb

I was experiencing similar problem and the solution for my case was

1. changing bind-address = 0.0.0.0 from 127.0.0.1
2. changing url's localhost to localhost:3306

the thing i felt is we should never give up, i tried every options from this post and from other forums as well...happy it works @saurab

There are some use cases suitable to UDP transport and others suitable to TCP transport.

The use case also dictates encoding settings for the video. When broadcasting soccer match focus is on quality and for video conference focus is on latency.

When using multicast to deliver video to your customers then UDP is used.

Requirement for multicast is expensive networking hardware between broadcasting server and customer. In practice this means if your company owns network infrastructure you can use UDP and multicast for live video streaming. Even then quality-of-service is also implemented to mark video packets and prioritize them so no packet loss happens.

Multicast will simplify broadcasting software because network hardware will handle distributing packets to customers. Customers subscribe to multicast channels and network will reconfigure to route packets to new subscriber. By default all channels are available to all customers and can be optimally routed.

This workflow places dificulty on authorization process. Network hardware does not differentiate subscribed users from other users. Solution to authorization is in encrypting video content and enabling decryption in player software when subscription is valid.

Unicast (TCP) workflow allows server to check client's credentials and only allow valid subscriptions. Even allow only certain number of simultaneous connections.

Multicast is not enabled over internet.

For delivering video over internet TCP must be used. When UDP is used developers end up re-implementing packet re-transmission, for eg. Bittorrent p2p live protocol.

"If you use TCP, the OS must buffer the unacknowledged segments for every client. This is undesirable, particularly in the case of live events".

This buffer must exist in some form. Same is true for jitter buffer on player side. It is called "socket buffer" and server software can know when this buffer is full and discard proper video frames for live streams. It is better to use unicast/TCP method because server software can implement proper frame dropping logic. Random missing packets in UDP case will just create bad user experience. like in this video: http://tinypic.com/r/2qn89xz/9

"IP multicast significantly reduces video bandwidth requirements for large audiences"

This is true for private networks, Multicast is not enabled over internet.

"Note that if TCP loses too many packets, the connection dies; thus, UDP gives you much more control for this application since UDP doesn't care about network transport layer drops."

UDP also doesn't care about dropping entire frames or group-of-frames so it does not give any more control over user experience.

"Usually a video stream is somewhat fault tolerant"

Encoded video is not fault tolerant. When transmitted over unreliable transport then forward error correction is added to video container. Good example is MPEG-TS container used in satellite video broadcast that carry several audio, video, EPG, etc. streams. This is necessary as satellite link is not duplex communication, meaning receiver can't request re-transmission of lost packets.

When you have duplex communication available it is always better to re-transmit data only to clients having packet loss then to include overhead of forward-error-correction in stream sent to all clients.

In any case lost packets are unacceptable. Dropped frames are ok in exceptional cases when bandwidth is hindered.

The result of missing packets are artifacts like this one:

Some decoders can break on streams missing packets in critical places.

I changed the driver version in pom.xml and helped me

<dependency>
    <groupId>org.postgresql</groupId>
    <artifactId>postgresql</artifactId>
    <version>42.2.2</version>
</dependency>

Put http.request.method == "POST" in the display filter of wireshark to only show POST requests. Click on the packet, then expand the Hypertext Transfer Protocol field. The POST data will be right there on top.

It could be a simple jar problem. may be you are using a old mysql-connector-java-XXX-bin.jar which is not supported by your current mysql version. i used mysql-connector-java-5.1.18-bin.jar as i am using mysql 5.5 and this problem is resolved for me.

That's the nature of TCP: the protocol fills up packets (lower layer being IP packets) and sends them. You can have some degree of control over the MTU (Maximum Transfer Unit).

In other words: you must devise a protocol that rides on top of TCP where your "payload delineation" is defined. By "payload delineation" I mean the way you extract the unit of message your protocol supports. This can be as simple as "every NULL terminated strings".

I had to do something very similar to find out why my iPhone was bleeding cellular network data, eating 80% of my 500Mb allowance in a couple of days.

Unfortunately I had to packet sniff whilst on 3G/4G and couldn't rely on being on wireless. So if you need an "industrial" solution then this is how you sniff all traffic (not just http) on any network.

Basic recipe:

1. Install VPN server
2. Run packet sniffer on VPN server
3. Connect iPhone to VPN server and perform operations
4. Download .pcap from VPN server and use your favourite .pcap analyser on it.

Detailed'ish instructions:

1. Get yourself a linux server, I used Fedora 20 64bit from Digirtal Ocean on a $5/month box
2. Configure OpenVPN on it. OpenVPN has comprehensive instructions
3. Ensure you configure the Routing all traffic through the VPN section
4. Be aware the instructions for (3) are all iptables which has been superseded, at time of writing, by firewall-cmd. This website explains the firewall-cmd to use
5. Check that you can connect your iPhone to the VPN. I did this by downloading the free OpenVPN software. I then set up a OpenVPN certificate. You can embed your ca, crt & key files by opening up and embedding the --- BEGIN CERTIFACTE --- ---- END CERTIFICATE --- in < ca > < /ca > < crt >< /crt>< key > < /key > blocks. Note that I had to do this in Mac with text editor, when I used notepad.exe on Win it didn't work. I then emailed this to my iphone and picked installed it.
6. Check the iPhone connects to VPN and routes it's traffic through (google what's my IP should return the VPN server IP when you run it on iPhone)
7. Now that you can connect go to your linux server & install wireshark (yum install wireshark)
8. This installs tshark, which is a command line packet sniffer. Run this in the background with screen tshark -i tun0 -x -w capture.pcap -F pcap (assuming vpn device is tun0)
9. Now when you want to capture traffic simply start the VPN on your machine
10. When complete switch off the VPN
11. Download the .pcap file from your server, and run analysis as you normally would. It's been decrypted on the server when it arrives so the traffic is viewable in plain text (obviously https still encrypted)

Note that the above implementation is not security focussed it's simply about getting a detailed packet capture of all of your iPhone's traffic on 3G/4G/Wireless networks

I recently started playing with MQTT http://mqtt.org for Android as a way of doing what you're asking for (i.e. not SMS but data driven, almost immediate message delivery, scalable, not polling, etc.)

I have a blog post with background information on this in case it's helpful http://dalelane.co.uk/blog/?p=938

(Note: MQTT is an IBM technology, and I should point out that I work for IBM.)

If a TCP packet is lost, it will be resent. That is not handy for applications that rely on data being handled in a specific order in real time.

Examples include video streaming and especially VoIP (e.g. Skype). In those instances, however, a dropped packet is not such a big deal: our senses aren't perfect, so we may not even notice. That is why these types of applications use UDP instead of TCP.

576 is the minimum maximum reassembly buffer size, i.e. each implementation must be able to reassemble packets of at least that size. See IETF RFC 1122 for details.

An easy to use network fault injection tool is Saboteur. It can simulate:

• Total network partition
• Remote service dead (not listening on the expected port)
• Delays
• Packet loss -TCP connection timeout (as often happens when two systems are separated by a stateful firewall)

Don't use wsgiref for production. Use Apache and mod_wsgi, or something else.

We continue to see these connection resets, sometimes frequently, with wsgiref (the backend used by the werkzeug test server, and possibly others like the Django test server). Our solution was to log the error, retry the call in a loop, and give up after ten failures. httplib2 tries twice, but we needed a few more. They seem to come in bunches as well - adding a 1 second sleep might clear the issue.

We've never seen a connection reset when running through Apache and mod_wsgi. I don't know what they do differently, (maybe they just mask them), but they don't appear.

When we asked the local dev community for help, someone confirmed that they see a lot of connection resets with wsgiref that go away on the production server. There's a bug there, but it is going to be hard to find it.

I also had this problem on a Server 2012 R2 VM joined to my local AD domain. I eventually solved the problem by taking the VM off the domain and re-joining it.

Calling a JavaScript function from code behind

Step 1 Add your Javascript code

<script type="text/javascript" language="javascript">
    function Func() {
        alert("hello!")
    }
</script>

Step 2 Add 1 Script Manager in your webForm and Add 1 button too

Step 3 Add this code in your button click event

ScriptManager.RegisterStartupScript(this.Page, Page.GetType(), "text", "Func()", true);

You can see collation settings for each table like the following code:

SELECT t.name TableName, c.name ColumnName, collation_name  
FROM sys.columns c  
INNER JOIN sys.tables t on c.object_id = t.object_id where t.name = 'name of table';

The best tool I know is NodeJS tool: zeit/pkg

It is very easy to use (much more than Nexe, just as an example), you can just install in globally: npm install -g pkg

to create executables for macOS, Linux and Windows:

pkg exampleApp.js

I had a bit of complicated code which used NodeJS socket server, I tried different applications, none of them created it properly, except zeit/pkg.

You can use

$window.scrollTo(x, y);

where x is the pixel along the horizontal axis and y is the pixel along the vertical axis.

1. Scroll to top

   $window.scrollTo(0, 0);
   

2. Focus on element

   $window.scrollTo(0, angular.element('put here your element').offsetTop);   
   

Example

Update:

Also you can use $anchorScroll

Example

You can use the QuerySetChain class below. When using it with Django's paginator, it should only hit the database with COUNT(*) queries for all querysets and SELECT() queries only for those querysets whose records are displayed on the current page.

Note that you need to specify template_name= if using a QuerySetChain with generic views, even if the chained querysets all use the same model.

from itertools import islice, chain

class QuerySetChain(object):
    """
    Chains multiple subquerysets (possibly of different models) and behaves as
    one queryset.  Supports minimal methods needed for use with
    django.core.paginator.
    """

    def __init__(self, *subquerysets):
        self.querysets = subquerysets

    def count(self):
        """
        Performs a .count() for all subquerysets and returns the number of
        records as an integer.
        """
        return sum(qs.count() for qs in self.querysets)

    def _clone(self):
        "Returns a clone of this queryset chain"
        return self.__class__(*self.querysets)

    def _all(self):
        "Iterates records in all subquerysets"
        return chain(*self.querysets)

    def __getitem__(self, ndx):
        """
        Retrieves an item or slice from the chained set of results from all
        subquerysets.
        """
        if type(ndx) is slice:
            return list(islice(self._all(), ndx.start, ndx.stop, ndx.step or 1))
        else:
            return islice(self._all(), ndx, ndx+1).next()

In your example, the usage would be:

pages = Page.objects.filter(Q(title__icontains=cleaned_search_term) |
                            Q(body__icontains=cleaned_search_term))
articles = Article.objects.filter(Q(title__icontains=cleaned_search_term) |
                                  Q(body__icontains=cleaned_search_term) |
                                  Q(tags__icontains=cleaned_search_term))
posts = Post.objects.filter(Q(title__icontains=cleaned_search_term) |
                            Q(body__icontains=cleaned_search_term) | 
                            Q(tags__icontains=cleaned_search_term))
matches = QuerySetChain(pages, articles, posts)

Then use matches with the paginator like you used result_list in your example.

The itertools module was introduced in Python 2.3, so it should be available in all Python versions Django runs on.

The same error appears if you do not use the correct (numeric) format of your data in your data.frame column using mean() function. Therefore, check your data using str(data.frame&column) function to see what data type you have, and convert it to numeric format if necessary. For example, if your data is Character convert it with as.numeric(data.frame$column), or as a factor with as.numeric(as.character(data.frame$column)). The mean function does not work with types other than numeric.

Add "android-support-v7-appcompat.jar" to Android Private Libraries

Read up some on css, it's fun: http://www.w3.org/Style/Examples/007/units.en.html

<style>
  .bottom-three {
     margin-bottom: 3cm;
  }
</style>


<p class="bottom-three">
   This is the first question?
</p>
<p class="bottom-three">
   This is the second question?
</p>

The accepted answer works for me. But I found it more useful to have the commits sorted starting with the most recent.

git branch -r --sort=-committerdate

https://git-scm.com/docs/git-branch

MailSystem.NET contains all your need for IMAP4. It's free & open source.

(I'm involved in the project)

Try svn export.

You should be able to do something like this:

svn export /path/to/old/working/copy /path/to/plain/code

And then just delete the old working copy.

TortoiseSVN also has an export feature, which behaves the same way.

Add this as a first line in the HEAD section of your HTML template

<meta content="text/html;charset=utf-8" http-equiv="Content-Type">
<meta content="utf-8" http-equiv="encoding">

The main difference between the web containers and application server is that most web containers such as Apache Tomcat implements only basic JSR like Servlet, JSP, JSTL wheres Application servers implements the entire Java EE Specification. Every application server contains web container.

After all that, the interviewer came up with the question "What if you had an 
Abstract class with only abstract methods? How would that be different
from an interface?" 

Docs clearly say that if an abstract class contains only abstract method declarations, it should be declared as an interface instead.

An another interviewer asked me what if you had a Public variable inside
the interface, how would that be different than in Abstract Class?

Variables in Interfaces are by default public static and final. Question could be framed like what if all variables in abstract class are public? Well they can still be non static and non final unlike the variables in interfaces.

Finally I would add one more point to those mentioned above - abstract classes are still classes and fall in a single inheritance tree whereas interfaces can be present in multiple inheritance.

I believe that it can be done by simply setting your FormBorderStyle Property to None and the WindowState to Maximized. If you are using Visual Studio both of those can be found in the IDE so there is no need to do so programmatically. Make sure to include some way of closing/exiting the program before doing this cause this will remove that oh so helpful X in the upper right corner.

EDIT:

Try this instead. It is a snippet that I have kept for a long time. I can't even remember who to credit for it, but it works.

/*
 * A function to put a System.Windows.Forms.Form in fullscreen mode
 * Author: Danny Battison
 * Contact: [email protected]
 */

        // a struct containing important information about the state to restore to
        struct clientRect
        {
            public Point location;
            public int width;
            public int height;
        };
        // this should be in the scope your class
        clientRect restore;
                bool fullscreen = false;

        /// <summary>
        /// Makes the form either fullscreen, or restores it to it's original size/location
        /// </summary>
        void Fullscreen()
        {
            if (fullscreen == false)
            {
                this.restore.location = this.Location;
                this.restore.width = this.Width;
                this.restore.height = this.Height;
                this.TopMost = true;
                this.Location = new Point(0,0);
                this.FormBorderStyle = FormBorderStyle.None;
                this.Width = Screen.PrimaryScreen.Bounds.Width;
                this.Height = Screen.PrimaryScreen.Bounds.Height;
            }
            else
            {
                this.TopMost = false;
                this.Location = this.restore.location;
                this.Width = this.restore.width;
                this.Height = this.restore.height;
                                // these are the two variables you may wish to change, depending
                                // on the design of your form (WindowState and FormBorderStyle)
                this.WindowState = FormWindowState.Normal;
                this.FormBorderStyle = FormBorderStyle.Sizable;
            }
        }

For Xamarin Android align to the left of an object

int dp24 = (int)TypedValue.ApplyDimension( ComplexUnitType.Dip, 24, Resources.System.DisplayMetrics );
            RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams( dp24, dp24 );
            lp.AddRule( LayoutRules.CenterInParent, 1 );
            lp.AddRule( LayoutRules.LeftOf, //Id of the field Eg m_Button.Id ); 
            m_Button.LayoutParameters = lp;

You can try this one

CONVERT(DATE, GETDATE()) = CONVERT(DATE,'2017-11-16 21:57:20.000')

I test that for MS SQL 2014 by following code

select case when CONVERT(DATE, GETDATE()) = CONVERT(DATE,'2017-11-16 21:57:20.000') then 'ok'
            else '' end

I've created a new class to handle binding RadioButtons and CheckBoxes to enums. It works for flagged enums (with multiple checkbox selections) and non-flagged enums for single-selection checkboxes or radio buttons. It also requires no ValueConverters at all.

This might look more complicated at first, however, once you copy this class into your project, it's done. It's generic so it can easily be reused for any enum.

public class EnumSelection<T> : INotifyPropertyChanged where T : struct, IComparable, IFormattable, IConvertible
{
  private T value; // stored value of the Enum
  private bool isFlagged; // Enum uses flags?
  private bool canDeselect; // Can be deselected? (Radio buttons cannot deselect, checkboxes can)
  private T blankValue; // what is considered the "blank" value if it can be deselected?

  public EnumSelection(T value) : this(value, false, default(T)) { }
  public EnumSelection(T value, bool canDeselect) : this(value, canDeselect, default(T)) { }
  public EnumSelection(T value, T blankValue) : this(value, true, blankValue) { }
  public EnumSelection(T value, bool canDeselect, T blankValue)
  {
    if (!typeof(T).IsEnum) throw new ArgumentException($"{nameof(T)} must be an enum type"); // I really wish there was a way to constrain generic types to enums...
    isFlagged = typeof(T).IsDefined(typeof(FlagsAttribute), false);

    this.value = value;
    this.canDeselect = canDeselect;
    this.blankValue = blankValue;
  }

  public T Value
  {
    get { return value; }
    set 
    {
      if (this.value.Equals(value)) return;
      this.value = value;
      OnPropertyChanged();
      OnPropertyChanged("Item[]"); // Notify that the indexer property has changed
    }
  }

  [IndexerName("Item")]
  public bool this[T key]
  {
    get
    {
      int iKey = (int)(object)key;
      return isFlagged ? ((int)(object)value & iKey) == iKey : value.Equals(key);
    }
    set
    {
      if (isFlagged)
      {
        int iValue = (int)(object)this.value;
        int iKey = (int)(object)key;

        if (((iValue & iKey) == iKey) == value) return;

        if (value)
          Value = (T)(object)(iValue | iKey);
        else
          Value = (T)(object)(iValue & ~iKey);
      }
      else
      {
        if (this.value.Equals(key) == value) return;
        if (!value && !canDeselect) return;

        Value = value ? key : blankValue;
      }
    }
  }

  public event PropertyChangedEventHandler PropertyChanged;

  private void OnPropertyChanged([CallerMemberName] string propertyName = "")
  {
    PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
  }
}

And for how to use it, let's say you have an enum for running a task manually or automatically, and can be scheduled for any days of the week, and some optional options...

public enum StartTask
{
  Manual,
  Automatic
}

[Flags()]
public enum DayOfWeek
{
  Sunday = 1 << 0,
  Monday = 1 << 1,
  Tuesday = 1 << 2,
  Wednesday = 1 << 3,
  Thursday = 1 << 4,
  Friday = 1 << 5,
  Saturday = 1 << 6
}

public enum AdditionalOptions
{
  None = 0,
  OptionA,
  OptionB
}

Now, here's how easy it is to use this class:

public class MyViewModel : ViewModelBase
{
  public MyViewModel()
  {
    StartUp = new EnumSelection<StartTask>(StartTask.Manual);
    Days = new EnumSelection<DayOfWeek>(default(DayOfWeek));
    Options = new EnumSelection<AdditionalOptions>(AdditionalOptions.None, true, AdditionalOptions.None);
  }

  public EnumSelection<StartTask> StartUp { get; private set; }
  public EnumSelection<DayOfWeek> Days { get; private set; }
  public EnumSelection<AdditionalOptions> Options { get; private set; }
}

And here's how easy it is to bind checkboxes and radio buttons with this class:

<StackPanel Orientation="Vertical">
  <StackPanel Orientation="Horizontal">
    <!-- Using RadioButtons for exactly 1 selection behavior -->
    <RadioButton IsChecked="{Binding StartUp[Manual]}">Manual</RadioButton>
    <RadioButton IsChecked="{Binding StartUp[Automatic]}">Automatic</RadioButton>
  </StackPanel>
  <StackPanel Orientation="Horizontal">
    <!-- Using CheckBoxes for 0 or Many selection behavior -->
    <CheckBox IsChecked="{Binding Days[Sunday]}">Sunday</CheckBox>
    <CheckBox IsChecked="{Binding Days[Monday]}">Monday</CheckBox>
    <CheckBox IsChecked="{Binding Days[Tuesday]}">Tuesday</CheckBox>
    <CheckBox IsChecked="{Binding Days[Wednesday]}">Wednesday</CheckBox>
    <CheckBox IsChecked="{Binding Days[Thursday]}">Thursday</CheckBox>
    <CheckBox IsChecked="{Binding Days[Friday]}">Friday</CheckBox>
    <CheckBox IsChecked="{Binding Days[Saturday]}">Saturday</CheckBox>
  </StackPanel>
  <StackPanel Orientation="Horizontal">
    <!-- Using CheckBoxes for 0 or 1 selection behavior -->
    <CheckBox IsChecked="{Binding Options[OptionA]}">Option A</CheckBox>
    <CheckBox IsChecked="{Binding Options[OptionB]}">Option B</CheckBox>
  </StackPanel>
</StackPanel>

1. When the UI loads, the "Manual" radio button will be selected and you can alter your selection between "Manual" or "Automatic" but either one of them must always be selected.
2. Every day of the week will be unchecked, but any number of them can be checked or unchecked.
3. "Option A" and "Option B" will both initially be unchecked. You can check one or the other, checking one will uncheck the other (similar to RadioButtons), but now you can also uncheck both of them (which you cannot do with WPF's RadioButton, which is why CheckBox is being used here)

The query either returned no rows or is erroneus, thus FALSE is returned. Change it to

if (!$dbc || mysqli_num_rows($dbc) == 0)

mysqli_num_rows:

Return Values

Returns TRUE on success or FALSE on failure. For SELECT, SHOW, DESCRIBE or EXPLAIN mysqli_query() will return a result object.

just clean and make project / rebuilt fixed my issue give a try :-)

Here is a revision of @Tayrn answer above that might help you understand pivoting a little easier:

This may not be the best way to do this, but this is what helped me wrap my head around how to pivot tables.

ID = rows you want to pivot

MY_KEY = the column you are selecting from your original table that contains the column names you want to pivot.

VAL = the value you want returning under each column.

MAX(VAL) => Can be replaced with other aggregiate functions. SUM(VAL), MIN(VAL), ETC...

DECLARE @cols AS NVARCHAR(MAX),
@query  AS NVARCHAR(MAX)
select @cols = STUFF((SELECT ',' + QUOTENAME(MY_KEY) 
                from yt
                group by MY_KEY
                order by MY_KEY ASC
        FOR XML PATH(''), TYPE
        ).value('.', 'NVARCHAR(MAX)') 
    ,1,1,'')
set @query = 'SELECT ID,' + @cols + ' from 
         (
            select ID, MY_KEY, VAL 
            from yt
        ) x
        pivot 
        (
            sum(VAL)
            for MY_KEY in (' + @cols + ')
        ) p '

        execute(@query);

The correct answer that worked for me on CentOS is

/etc/init.d/mysql restart

which is an init script and not /etc/init.d/mysqld restart, which is binary

The is in fact comment of @MrTux on the question which worked for me. It took quite a bit of my time hence posting it as answer.

You can almost do it with:

.link {
  text-transform: lowercase;
}
.link:first-letter,
.link:first-line {
  text-transform: uppercase;
}

It will give you the output:

Small Caps
All Caps

I pulled most of this code from another post found here. I have modified it for my purposes. This works well for what I need. It may help with your situation.

$(window).load(function() {
  function checkDate() {
    var dateFormat = /^(0?[1-9]|[12][0-9]|3[01])[\/\-](0?[1-9]|1[012])[\/\-]\d{4}$/;
    var valDate = $(this).val();
    if ( valDate.match( dateFormat )) {
      $(this).css("border","1px solid #cccccc","color", "#555555", "font-weight", "normal");
      var seperator1 = valDate.split('/');
      var seperator2 = valDate.split('-');

      if ( seperator1.length > 1 ) {
        var splitdate = valDate.split('/');
      } else if ( seperator2.length > 1 ) {
        var splitdate = valDate.split('-');
      }

      var dd = parseInt(splitdate[0]);
      var mm = parseInt(splitdate[1]);
      var yy = parseInt(splitdate[2]);
      var ListofDays = [31,28,31,30,31,30,31,31,30,31,30,31];

      if ( mm == 1 || mm > 2 ) {
        if ( dd > ListofDays[mm - 1] ) {
          $(this).val("");
          $(this).css("border","solid red 1px","color", "red", "font-weight", "bold");
          alert('Invalid Date! You used a date which does not exist in the known calender.');
          return false;
        }
      }

      if ( mm == 2 ) {
       var lyear = false;
        if ( (!(yy % 4) && yy % 100) || !(yy % 400) ){
          lyear = true;
        }

        if ( (lyear==false) && (dd>=29) ) {
          $(this).val("");
          $(this).css("border","solid red 1px","color", "red", "font-weight", "bold");
          alert('Invalid Date! You used Feb 29th for an invalid leap year');
          return false;
        }

        if ( (lyear==true) && (dd>29) ) {
          $(this).val("");
          $(this).css("border","solid red 1px","color", "red", "font-weight", "bold");
          alert('Invalid Date! You used a date greater than Feb 29th in a valid leap year');
          return false;
        }
     }
    } else {
      $(this).val("");
      $(this).css("border","solid red 1px","color", "red", "font-weight", "bold");
      alert('Date format was invalid! Please use format mm/dd/yyyy');
      return false;
    }
  };

  $('#from_date').change( checkDate );
  $('#to_date').change( checkDate );
});

This is an option:

dbContext.Entry(entity).State = EntityState.Detached;

Works fine for me

See example here. http://jsfiddle.net/blowsie/c6VAy/

Make sure your jquery is inside $(document).ready function or similar.

Also you can improve your code by using jquery data

$('#amount').data('min','1000');

<div id="amount" data-min=""></div>

Update,

A working example of your full code (pretty much) here. http://jsfiddle.net/blowsie/c6VAy/3/

You can create a custom validator to handle this.

new FormControl(field.fieldValue || '', [Validators.required, this.noWhitespaceValidator])

Add noWhitespaceValidator method to your component

public noWhitespaceValidator(control: FormControl) {
    const isWhitespace = (control.value || '').trim().length === 0;
    const isValid = !isWhitespace;
    return isValid ? null : { 'whitespace': true };
}

and in the HTML

<div *ngIf="yourForm.hasError('whitespace')">Please enter valid data</div>

ServerSide:

     doPost(HttpServletRequest request, HttpServletResponse response){ 
            try{ //logic
            }catch(ApplicationException exception){ 
               response.setStatus(400);
               response.getWriter().write(exception.getMessage());
               //just added semicolon to end of line

           }
 }

ClientSide:

 jQuery.ajax({// just showing error property
           error: function(jqXHR,error, errorThrown) {  
               if(jqXHR.status&&jqXHR.status==400){
                    alert(jqXHR.responseText); 
               }else{
                   alert("Something went wrong");
               }
          }
    }); 

Generic Ajax Error Handling

If I need to do some generic error handling for all the ajax requests. I will set the ajaxError handler and display the error on a div named errorcontainer on the top of html content.

$("div#errorcontainer")
    .ajaxError(
        function(e, x, settings, exception) {
            var message;
            var statusErrorMap = {
                '400' : "Server understood the request, but request content was invalid.",
                '401' : "Unauthorized access.",
                '403' : "Forbidden resource can't be accessed.",
                '500' : "Internal server error.",
                '503' : "Service unavailable."
            };
            if (x.status) {
                message =statusErrorMap[x.status];
                                if(!message){
                                      message="Unknown Error \n.";
                                  }
            }else if(exception=='parsererror'){
                message="Error.\nParsing JSON Request failed.";
            }else if(exception=='timeout'){
                message="Request Time out.";
            }else if(exception=='abort'){
                message="Request was aborted by the server";
            }else {
                message="Unknown Error \n.";
            }
            $(this).css("display","inline");
            $(this).html(message);
                 });

getPathInfo() gives the extra path information after the URI, used to access your Servlet, where as getRequestURI() gives the complete URI.

I would have thought they would be different, given a Servlet must be configured with its own URI pattern in the first place; I don't think I've ever served a Servlet from root (/).

For example if Servlet 'Foo' is mapped to URI '/foo' then I would have thought the URI:

/foo/path/to/resource

Would result in:

RequestURI = /foo/path/to/resource

and

PathInfo = /path/to/resource

The cleanest way of iterating through a vector is via iterators:

for (auto it = begin (vector); it != end (vector); ++it) {
    it->doSomething ();
}

or (equivalent to the above)

for (auto & element : vector) {
    element.doSomething ();
}

Prior to C++0x, you have to replace auto by the iterator type and use member functions instead of global functions begin and end.

This probably is what you have seen. Compared to the approach you mention, the advantage is that you do not heavily depend on the type of vector. If you change vector to a different "collection-type" class, your code will probably still work. You can, however, do something similar in Java as well. There is not much difference conceptually; C++, however, uses templates to implement this (as compared to generics in Java); hence the approach will work for all types for which begin and end functions are defined, even for non-class types such as static arrays. See here: How does the range-based for work for plain arrays?

No, that is not a valid production according to the "credentials" definition in RFC 2617. You give a valid auth-scheme, but auth-param values must be of the form token "=" ( token | quoted-string ) (see section 1.2), and your example doesn't use "=" that way.

I have personally witnessed "" resulting in (minor) problems twice. Once was due to a mistake of a junior developer new to team-based programming, and the other was a simple typo, but the fact is using string.Empty would have avoided both issues.

Yes, this is very much a judgement call, but when a language gives you multiple ways to do things, I tend to lean toward the one that has the most compiler oversight and strongest compile-time enforcement. That is not "". It's all about expressing specific intent.

If you type string.EMpty or Strng.Empty, the compiler lets you know you did it wrong. Immediately. It simply will not compile. As a developer you are citing specific intent that the compiler (or another developer) cannot in any way misinterpret, and when you do it wrong, you can't create a bug.

If you type " " when you mean "" or vice-versa, the compiler happily does what you told it to do. Another developer may or may not be able to glean your specific intent. Bug created.

Long before string.Empty was a thing I've used a standard library that defined the EMPTY_STRING constant. We still use that constant in case statements where string.Empty is not allowed.

Whenever possible, put the compiler to work for you, and eliminate the possibility of human error, no matter how small. IMO, this trumps "readability" as others have cited.

Specificity and compile time enforcement. It's what's for dinner.

put this command in your vimrc file

set ic 

always do case insensitive search

In my case, creating canvas every time worked for me, even though it's not memory-friendly

Bitmap bm = BitmapFactory.decodeResource(getResources(), R.drawable.image);
imageBitmap = Bitmap.createBitmap(bm.getWidth(), bm.getHeight(), bm.getConfig());
canvas = new Canvas(imageBitmap);
canvas.drawBitmap(bm, 0, 0, null);

You should add the g modifier so that sed performs a global substitution of the contents of the pattern buffer:

echo dog dog dos | sed -e 's:dog:log:g'

For a fantastic documentation on sed, check http://www.grymoire.com/Unix/Sed.html. This global flag is explained here: http://www.grymoire.com/Unix/Sed.html#uh-6

The official documentation for GNU sed is available at http://www.gnu.org/software/sed/manual/

Android documentation says one can use a String formatting marker in getSummary():

If the summary has a String formatting marker in it (i.e. "%s" or "%1$s"), then the current entry value will be substituted in its place.

Simply specifying android:summary="Clean up messages after %s days" in ListPreference xml declaration worked for me.

Note: This only works for ListPreference.

5 years passed, and it's quite strange that there are so many answers there which don't follow (or are against) bootstrap rules or don't actually answer the question...
(For the details on those mistakes check the last section of this answer)

Short Answer:
Simply use Bootstrap's no-gutters class in your row to remove padding:

  <div class="container-fluid">
    <div class="row no-gutters">
      <div class="col-sm-6">
        <p>Use this document as a way to quickly start any new project.<br> All you get is this text and a mostly
          barebones HTML document.</p>
      </div>
      <div class="col-sm-6">
        <p>Use this document as a way to quickly start any new project.<br> All you get is this text and a mostly
          barebones HTML document.</p>
      </div>
    </div>
  </div>

(Also you've forgotten to add </div> to the end of your file. It's fixed in the code above as well)

Note:

There are cases when you want to remove the padding of the container itself as well. In this case consider dropping .container or .container-fluid classes as recommended by the documentation.

<!--<div class="container-fluid">-->
<div class="row no-gutters">
  <div class="col-sm-6">
    <p>Use this document as a way to quickly start any new project.<br> All you get is this text and a mostly
      barebones HTML document.</p>
  </div>
  <div class="col-sm-6">
    <p>Use this document as a way to quickly start any new project.<br> All you get is this text and a mostly
      barebones HTML document.</p>
  </div>
</div>
<!--</div>-->

Long Answer:

The paddings you get are actually documented in Bootstrap's documentation:

Rows are wrappers for columns. Each column has horizontal padding (called a gutter) for controlling the space between them. This padding is then counteracted on the rows with negative margins. This way, all the content in your columns is visually aligned down the left side.

And about the solution, which was documented as well:

Columns have horizontal padding to create the gutters between individual columns, however, you can remove the margin from rows and padding from columns with .no-gutters on the .row.

Regarding dropping the container:

Need an edge-to-edge design? Drop the parent .container or .container-fluid.

Bonus: About the mistakes found on the other answers

• Avoid hacking bootstrap's container classes instead of making sure that you've put all the content in col-s and wrapped them with row-s as documentation says:

In a grid layout, content must be placed within columns and only columns may be immediate children of rows.

• If you still have to do hack (just in case someone already messed up things and you need to quickly fix your issue) consider using Bootstrap's px-0 for removing horizontal paddings instead pl-0 pr-0 or reinventing your styles.

I am using: Apache Commons Lang: StringUtils.ordinalIndexOf()

StringUtils.ordinalIndexOf("Java Language", "a", 2)

The count method of NSArray returns an NSUInteger, and on the 64-bit OS X platform

• NSUInteger is defined as unsigned long, and
• unsigned long is a 64-bit unsigned integer.
• int is a 32-bit integer.

So int is a "smaller" datatype than NSUInteger, therefore the compiler warning.

See also NSUInteger in the "Foundation Data Types Reference":

When building 32-bit applications, NSUInteger is a 32-bit unsigned integer. A 64-bit application treats NSUInteger as a 64-bit unsigned integer.

To fix that compiler warning, you can either declare the local count variable as

NSUInteger count;

or (if you are sure that your array will never contain more than 2^31-1 elements!), add an explicit cast:

int count = (int)[myColors count];

for image write this

<input type=file accept="image/*">

For other, You can use the accept attribute on your form to suggest to the browser to restrict certain types. However, you'll want to re-validate in your server-side code to make sure. Never trust what the client sends you

Perhaps involve the activity's life-cycle methods to achieve this:

Handler handler = new Handler();

@Override
protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      handler.post(sendData);
}

@Override
protected void onDestroy() {
      super.onDestroy();
      handler.removeCallbacks(sendData);
}


private final Runnable sendData = new Runnable(){
    public void run(){
        try {
            //prepare and send the data here..


            handler.postDelayed(this, 1000);    
        }
        catch (Exception e) {
            e.printStackTrace();
        }   
    }
};

In this approach, if you press back-key on your activity or call finish();, it will also stop the postDelayed callings.

npm root -g

to check the npm_modules global location

To call the method, you need to qualify function with self.. In addition to that, if you want to pass a filename, add a filename parameter (or other name you want).

class MyHandler(FileSystemEventHandler):

    def on_any_event(self, event):
        srcpath = event.src_path
        print (srcpath, 'has been ',event.event_type)
        print (datetime.datetime.now())
        filename = srcpath[12:]
        self.dropbox_fn(filename) # <----

    def dropbox_fn(self, filename):  # <-----
        print('In dropbox_fn:', filename)

This should do it:

<%= f.select :project_id, @project_select, :selected => params[:pid] %>

check Robocopy:

ROBOCOPY \\server-source\c$\VMExports\ C:\VMExports\ /E /COPY:DAT

make sure you check what robocopy parameter you want. this is just an example. type robocopy /? in a comandline/powershell on your windows system.

You can use the ImageGrab module. ImageGrab works on Windows and macOS, and you need PIL (Pillow) to use it. Here is a little example:

from PIL import ImageGrab
snapshot = ImageGrab.grab()
save_path = "C:\\Users\\YourUser\\Desktop\\MySnapshot.jpg"
snapshot.save(save_path)

USE this , Don't forget to get a google api key from

https://console.developers.google.com/apis/credentials

and replace it

    <div id="map" style="width:100%;height:400px;"></div>

<script>
function myMap() {

var map = new google.maps.Map(document.getElementById("map"), mapOptions);
  var myCenter = new google.maps.LatLng(38.224905, 48.252143);
  var mapCanvas = document.getElementById("map");
  var mapOptions = {center: myCenter, zoom: 16};
  var map = new google.maps.Map(mapCanvas, mapOptions);
  var marker = new google.maps.Marker({position:myCenter});
  marker.setMap(map);
}
</script>

<script src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&callback=myMap"></script>

If you are using the Google Chrome driver, you can use this very simple code (it worked for me):

from selenium import webdriver
from selenium.webdriver.chrome.options import Options

chrome_options = Options()
chrome_options.add_argument("--headless")
driver = webdriver.Chrome('chromedriver2_win32/chromedriver.exe', options=chrome_options)
driver.get('https://www.anywebsite.com')

Just found that issue corresponding to my problem. Using HandlerMapping constants I was able to wrote a small utility for that purpose:

/**
 * Extract path from a controller mapping. /controllerUrl/** => return matched **
 * @param request incoming request.
 * @return extracted path
 */
public static String extractPathFromPattern(final HttpServletRequest request){


    String path = (String) request.getAttribute(
            HandlerMapping.PATH_WITHIN_HANDLER_MAPPING_ATTRIBUTE);
    String bestMatchPattern = (String ) request.getAttribute(HandlerMapping.BEST_MATCHING_PATTERN_ATTRIBUTE);

    AntPathMatcher apm = new AntPathMatcher();
    String finalPath = apm.extractPathWithinPattern(bestMatchPattern, path);

    return finalPath;

}

From MSDN:

A String object is a sequential collection of System.Char objects that represent a string.

So you can use this:

var howManyBytes = yourString.Length * sizeof(Char);

fill="#044B9466"

This is an RGBA color in hex notation inside the SVG, defined with hex values. This is valid, but not all programs can display it properly...

You can find the browser support for this syntax here: https://caniuse.com/#feat=css-rrggbbaa

As of August 2017: RGBA fill colors will display properly on Mozilla Firefox (54), Apple Safari (10.1) and Mac OS X Finder's "Quick View". However Google Chrome did not support this syntax until version 62 (was previously supported from version 54 with the Experimental Platform Features flag enabled).

onclick event to call a function

  <strike> <input type="button" value="NEXT"  onclick="document.write('<?php //call a function here ex- 'fun();' ?>');" />    </strike>

it will surely help you

it take a little more time than normal but wait it will work

You can do something like this:

Using search will return a SRE_match object, if it matches your search string.

>>> import re
>>> m = re.search(u'ba[r|z|d]', 'bar')
>>> m
<_sre.SRE_Match object at 0x02027288>
>>> m.group()
'bar'
>>> n = re.search(u'ba[r|z|d]', 'bas')
>>> n.group()

If not, it will return None

Traceback (most recent call last):
  File "<pyshell#17>", line 1, in <module>
    n.group()
AttributeError: 'NoneType' object has no attribute 'group'

And just to print it to demonstrate again:

>>> print n
None

If you have this issue with macOS, there is no easy way here: ( Especially, when you want to use R3.4. I have been there already.

R 3.4, rJava, macOS and even more mess

For R3.3 it's a little bit easier (R3.3 was compiled using different compiler).

R, Java, rJava and macOS adventures

Array manipulations are really slow compared to simple string concat. Of course, benchmark for your use case.

function(string, length, pad_char, append) {
    string = string.toString();
    length = parseInt(length) || 1;
    pad_char = pad_char || ' ';

    while (string.length < length) {
        string = append ? string+pad_char : pad_char+string;
    }
    return string;
};

Here first every one need to use oauth2/token api then use followers/list api.
Other wise you will get this error. Because followers/list api requires Authentication.

In swift (for mobile app) me also got the same problem.

If you want to know the api's and it's parameters follow this link , Get twitter friends list in swift?

Made an app with two labels in IB and the following:

@IBOutlet var label1: UILabel!
@IBOutlet var label2: UILabel!

override func viewDidLoad() {
    super.viewDidLoad()
    label1.textColor = UIColor.redColor() // in Swift 3 it's UIColor.red
    label2.textColor = label1.textColor
}

label2 color changed as expected, so your line works. Try println(otherLabel.textColor) right before you set myLabel.textColor to see if the color's what you expect.

.toString() is available, or just add "" to the end of the int

var x = 3,
    toString = x.toString(),
    toConcat = x + "";

Angular is simply JavaScript at the core.

You can use ManualResetEvent. Reset the event before you fire secondary thread and then use the WaitOne() method to block the current thread. You can then have secondary thread set the ManualResetEvent which would cause the main thread to continue. Something like this:

ManualResetEvent oSignalEvent = new ManualResetEvent(false);

void SecondThread(){
    //DoStuff
    oSignalEvent.Set();
}

void Main(){
    //DoStuff
    //Call second thread
    System.Threading.Thread oSecondThread = new System.Threading.Thread(SecondThread);
    oSecondThread.Start();

    oSignalEvent.WaitOne(); //This thread will block here until the reset event is sent.
    oSignalEvent.Reset();
    //Do more stuff
}

Make sure your drawables for the menu are in the correct folder, mine where put in drawablev21 hence this caused a nullpointer to the resource.

Fixed it buy moving my icons to drawables folder

Excel shows 24:03 as 3 minutes when you format it as time, because 24:03 is the same as 12:03 AM (in military time).

Use General Format to Add Times

Instead of trying to format as Time, use the General Format and the following formula:

=number of minutes + (number of seconds / 60)

Ex: for 24 minutes and 3 seconds:

=24+3/60

This will give you a value of 24.05.

Do this for each time period. Let's say you enter this formula in cells A1 and A2. Then, to get the total sum of elapsed time, use this formula in cell A3:

=INT(A1+A2)+MOD(A1+A2,1)

Convert back to minutes and seconds

If you put =24+3/60 into each cell, you will have a value of 48.1 in cell A3.

Now you need to convert this back to minutes and seconds. Use the following formula in cell A4:

=MOD(A3,1)*60

This takes the decimal portion and multiples it by 60. Remember, we divided by 60 in the beginning, so to convert it back to seconds we need to multiply.

You could have also done this separately, i.e. in cell A3 use this formula:

=INT(A1+A2)

and this formula in cell A4:

=MOD(A1+A2,1)*60

Here's a screenshot showing the final formulas:

For SSMS 18 (specifically 18.6), I found my backup here C:\Windows\SysWOW64\Visual Studio 2017\Backup Files\Solution1.

Kudos to Matthew Lock for giving me the idea to just search across my whole machine!

json is limited in terms of objects it can print, and jsonpickle (you may need a pip install jsonpickle) is limited in terms it can't indent text. If you would like to inspect the contents of an object whose class you can't change, I still couldn't find a straighter way than:

 import json
 import jsonpickle
 ...
 print  json.dumps(json.loads(jsonpickle.encode(object)), indent=2)

Note: that still they can't print the object methods.

Just for the sake of completeness, appending values to a vector in a for loop is not really the philosophy in R. R works better by operating on vectors as a whole, as @BrodieG pointed out. See if your code can't be rewritten as:

ouput <- sapply(values, function(v) return(2*v))

Output will be a vector of return values. You can also use lapply if values is a list instead of a vector.

My nodemon vanished after installing babel (why?).

Tried a lot of stuff. Here is how I solved it:

sudo npm i -g nodemon

Just reinstall it with sudo. Yeah.

Redefine the CI_Loader::view function by adding a file named as 'MY_Loader.php' in your application/core folder and adding the following content

/**
* /application/core/MY_Loader.php
*/

class MY_Loader extends CI_Loader 
{  
        public function view($view, $vars = array(), $return = FALSE, $include_template=TRUE)
        {
            $header='';
            $footer='';

            if($include_template)
            {
                    $header=parent::view('templates/header',$vars,$return);
            }

            $content=parent::view($view, $vars,$return);

            if($include_template)
            {
                    $footer=parent::view('templates/footer',$vars,$return);
            }

            if($return)
                    return "$header$content$footer";

            return $this;
        }
}

Your URL should be jdbc:sqlserver://server:port;DatabaseName=dbname
and Class name should be like com.microsoft.sqlserver.jdbc.SQLServerDriver
Use MicrosoftSQL Server JDBC Driver 2.0

The underlying connection was closed: An unexpected error occurred on a receive.

This problem occurs when the server or another network device unexpectedly closes an existing Transmission Control Protocol (TCP) connection. This problem may occur when a time-out value on the server or on the network device is set too low. To resolve this problem, see resolutions A, D, E, F, and O. The problem can also occur if the server resets the connection unexpectedly, such as if an unhandled exception crashes the server process. Analyze the server logs to see if this may be the issue.

Resolution

To resolve this problem, make sure that you are using the most recent version of the .NET Framework.

Add a method to the class to override the GetWebRequest method. This change lets you access the HttpWebRequest object. If you are using Microsoft Visual C#, the new method must be similar to the following.

class MyTestService:TestService.TestService
{
    protected override WebRequest GetWebRequest(Uri uri)
    {
        HttpWebRequest webRequest = (HttpWebRequest) base.GetWebRequest(uri);
        //Setting KeepAlive to false
        webRequest.KeepAlive = false;
        return webRequest;
    }
}

Excerpt from KB915599: You receive one or more error messages when you try to make an HTTP request in an application that is built on the .NET Framework 1.1 Service Pack 1.

display: inline-block is your friend you just need all three parts of the construct - before, the "block", after - to be one, then you can vertically align them all to the middle:

Working Example

(it looks like your picture anyway ;))

CSS:

p, div {
  display: inline-block; 
  vertical-align: middle;
}
p, div {
  display: inline !ie7; /* hack for IE7 and below */
}

table {
  background: #000; 
  color: #fff; 
  font-size: 16px; 
  font-weight: bold; margin: 0 10px;
}

td {
  padding: 5px; 
  text-align: center;
}

HTML:

<p>some text</p> 
<div>
  <table summary="">
  <tr><td>A</td></tr>
  <tr><td>B</td></tr>
  <tr><td>C</td></tr>
  <tr><td>D</td></tr>
  </table>
</div> 
<p>continues afterwards</p>

If you see this error in Hudson, try to remove the .java directory from your home directory, it may work for you.

You have to use a negative lookahead assertion.

(?!^ABC$)

You could for example use the following.

(?!^ABC$)(^.*$)

If this does not work in your editor, try this. It is tested to work in ruby and javascript:

^((?!ABC).)*$

It is actually very easy. But there is no way you can achieve it directly. You need to select a service side technology. You can use anything for this part. And this is what we call a RESTful API or a SOAP API. It depends on you what to select. I have done many project with both. I would prefer REST. So what will happen you will have some scripts in your web server, and you know the URLs. For example we need to make a user registration. And for this we have

mydomain.com/v1/userregister.php

Now from the android side you will send an HTTP request to the above URL. And the above URL will handle the User Registration and will give you a response that whether the operation succeed or not.

For a complete detailed explanation of the above concept. You can visit the following link.

**Android MySQL Tutorial to Perform CRUD Operation**

See what I've done here: http://jsfiddle.net/dyarbrough93/c8wEC/

First off, you never set the dimensions of the overlay, meaning it wasn't showing up in the first place. Secondly, I recommend just changing the z-index of the overlay when you hover over the image. Change the opacity / color of the overlay to suit your needs.

.image { position: relative; width: 200px; height: 200px;}
.image img { max-width: 100%; max-height: 100%; }
.overlay { position: absolute; top: 0; left: 0; background-color: gray; z-index: -10; width: 200px; height: 200px; opacity: 0.5}
.image:hover .overlay { z-index: 10}

In case also setting the height of the html and the body to 100% makes everything messier for you as it did for me, the following worked for me:

height: calc(100vh - 33rem)

The - 33rem is the height of the elements coming after the one we want to take full height, i.e., 100vh. By subtracting the height, we will make sure there is no overflow and it will always be responsive (assuming we are working with rem instead of px).

I'm using .Net CORE 3.1 and I spent ages banging my head against a wall with this one when I realised that my code has started actually working but my debugging environment was broken, so here's 2 hints if you're trying to troubleshoot the problem:

1. If you're trying to log response headers using ASP.NET middleware, the "Access-Control-Allow-Origin" header will never show up even if it's there. I don't know how but it seems to be added outside the pipeline (in the end I had to use wireshark to see it).

2. .NET CORE won't send the "Access-Control-Allow-Origin" in the response unless you have an "Origin" header in your request. Postman won't set this automatically so you'll need to add it yourself.

// Store the formatted string in 'result'
String result = String.format("%4d", i * j);

// Write the result to standard output
System.out.println( result );

See format and its syntax

This might not really answer the question, but just in case someone just need to quickly send a string value to a function that require a NSArray parameter.

NSArray *data = @[@"The String Value"];

if you need to send more than just 1 string value, you could also use

NSArray *data = @[@"The String Value", @"Second String", @"Third etc"];

then you can send it to the function like below

theFunction(data);

You can use .is().

if( $('#leftmenu').is(':empty') ) {

Or you could just test the length property to see if one was found:

if( $('#leftmenu:empty').length ) {

You can use $.trim() to remove whitespace (if that's what you want) and check for the length of the content.

if( !$.trim( $('#leftmenu').html() ).length ) {

Relative vs Absolute:

• Difference: relative to itself, relative to the nearest positioned ancestor.
• Difference: Other elements arounds it honour its old existence, Other elements around it DO NOT honour its old existence.
• Similarity: Other elements arounds it DO NOT honour its new existence, Other elements around it DO NOT honour its new existence.

You can change the eclipse tomcat server configuration. Open the server view, double click on you server to open server configuration. Then click to activate "Publish module contents to separate XML files". Finally, restart your server, the message must disappear.

Source: http://www.albeesonline.com/blog/2008/11/29/warning-setpropertiesruleserverserviceenginehostcontext-setting-property/

When you call document.getElementsByName("name"), you will get a Object. Use .item(index) to traverse all items of a Object

HTML:

<input type="checkbox" onclick="for(c in document.getElementsByName('rfile')) document.getElementsByName('rfile').item(c).checked = this.checked">

<input type=?"checkbox" name=?"rfile" value=?"/?cgi-bin/?">?
<input type=?"checkbox" name=?"rfile" value=?"/?includes/?">?
<input type=?"checkbox" name=?"rfile" value=?"/?misc/?">?
<input type=?"checkbox" name=?"rfile" value=?"/?modules/?">?
<input type=?"checkbox" name=?"rfile" value=?"/?profiles/?">?
<input type=?"checkbox" name=?"rfile" value=?"/?scripts/?">?
<input type=?"checkbox" name=?"rfile" value=?"/?sites/?">?
<input type=?"checkbox" name=?"rfile" value=?"/?stats/?">?
<input type=?"checkbox" name=?"rfile" value=?"/?themes/?">?

The answer here worked better for me as it isolates the search on the hashtag, not just returning results that contain the search string. In the answer above you would still need to parse the JSON response to see if the entities.hashtags array is not empty.

You should add overflow: hidden to your styles:

Js:

<Button style={styles.submit}>Submit</Button>

Styles:

submit {
   backgroundColor: '#68a0cf';
   overflow: 'hidden';
}

You should look at MoSync too, MoSync gives you standard C/C++, easy-to-use well-documented APIs, and a full-featured Eclipse-based IDE. Its now a open sourced IDE still pretty cool but not maintained anymore.

The Subversion FAQ covers this, but uses a bunch of confusing undefined terms like REPOS_PATH without giving any actual examples.

It might take a few tries to get it to work, so save your updated commit message in a file. Unlike with svn-commit.tmp files, Subversion won’t preserve your typing if there’s a problem.

In your working directory, run

svn propedit -r N --revprop svn:log

to edit the commit message. If that works, great! But it probably won’t, because the svn:log revision property is unversioned and Subversion by default will stop you from overwriting it, either with the hook script pre-revprop-change, or an error message that you don’t have such a hook.

To change the hooks, you need access to the filesystem on which the repository is hosted. svn info will tell you the Repository Root. Suppose it’s ~/svnrepo.

1. cd to ~/svnrepo/hooks
2. Is there a pre-revprop-change or pre-revprop-change.bat script? If so, temporarily comment out the part of it that aborts if you try to change svn:log.

3. Otherwise, on Windows, create a blank file called pre-revprop-change.bat. Here’s one way to do that:

   copy con pre-revprop-change.bat
   ^Z
   

4. Otherwise, on Unix, run

   echo '#!/bin/sh' > pre-revprop-change
   chmod +x pre-revprop-change
   

5. In the working copy, run svn propedit -r N --revprop svn:log again

6. Undo your changes to ~/svnrepo/hooks/svn-revprop-change(.bat)

I don't know why you think there's no constructor. See the API.

The explanation is that JDK is a bit specific and does not contain the library tools.jar. For my development, I need this library and Mac's JDK doesn't provide it:

(Cf. http://developer.apple.com/mac/library/documentation/Java/Conceptual/Java14Development/02-JavaDevTools/JavaDevTools.html)

tools.jar does not exist. Classes usually located here are instead included in classes.jar. Scripts that rely on the existence of tools.jar need to be rewritten accordingly.

It sucks!

I solved this error by uninstalling two older SDK build tools versions, leaving only the most recent one.

in your action performed method, call:

label1.setText(nameField.getText());

This way, when the button is clicked, label will be updated to the nameField text.

Don't need all that. With simple and old HTML you can achieve what you want. If you let the radio you want checked by default like this:
<input type='radio' name='gender' checked='true' value='Male'>
When page loads, it'll come checked.

select * from INFORMATION_SCHEMA.COLUMNS where TABLE_NAME='<Table Name>'

You can get details like column datatype and size by this query

I use docker stats $(docker ps --format={{.Names}}) --no-stream to get :

1. CPU usage,
2. Mem usage/Total mem allocated to container (can be allocate with docker run command)
3. Mem %
4. Block I/O
5. Net I/O

I followed this procedure to get ride of a similar/same error.

mvn idea:clean

mvn idea:idea

After that I could build both from the IDE intellij and from command line.

public static boolean stringToBool(String s) {
        s = s.toLowerCase();
        Set<String> trueSet = new HashSet<String>(Arrays.asList("1", "true", "yes"));
        Set<String> falseSet = new HashSet<String>(Arrays.asList("0", "false", "no"));

        if (trueSet.contains(s))
            return true;
        if (falseSet.contains(s))
            return false;

        throw new IllegalArgumentException(s + " is not a boolean.");
    }

My way to convert string to boolean.

you can check if your session has a row in V$TRANSACTION (obviously that requires read privilege on this view):

SQL> SELECT COUNT(*)
       FROM v$transaction t, v$session s, v$mystat m
      WHERE t.ses_addr = s.saddr
        AND s.sid = m.sid
        AND ROWNUM = 1;

  COUNT(*)
----------
         0

SQL> insert into a values (1);

1 row inserted

SQL> SELECT COUNT(*)
       FROM v$transaction t, v$session s, v$mystat m
      WHERE t.ses_addr = s.saddr
        AND s.sid = m.sid
        AND ROWNUM = 1;

  COUNT(*)
----------
         1

SQL> commit;

Commit complete

SQL> SELECT COUNT(*)
       FROM v$transaction t, v$session s, v$mystat m
      WHERE t.ses_addr = s.saddr
        AND s.sid = m.sid
        AND ROWNUM = 1;

  COUNT(*)
----------
         0

In my opinion you should not load and use plugins you don't have to. This particular jQuery plugin doesn't give you anything since directly using the JavaScript sessionStorage object is exactly the same level of complexity. Nor, does the plugin provide some easier way to interact with other jQuery functionality. In addition the practice of using a plugin discourages a deep understanding of how something works. sessionStorage should be used only if its understood. If its understood, then using the jQuery plugin is actually MORE effort.

Consider using sessionStorage directly: https://developer.mozilla.org/en-US/docs/Web/Guide/API/DOM/Storage#sessionStorage

You can do it by listening to phone call events . You do it by having a BroadcastReceiver to PHONE_STATE and to NEW_OUTGOING_CALL. You find there what is the phone number.

Then when you decide to end the call, this is a bit tricky, because only from Android P it's guaranteed to work. Check here.

if you want put a input required if other is written:

   <input type='text'
   name='name'
   ng-model='person.name'/>

   <input type='text'
   ng-model='person.lastname'             
   ng-required='person.name' />  

Regards.

we can access/pass arguments/variables from one class to another class using object reference.

#Class1
class Test:
    def __init__(self):
        self.a = 10
        self.b = 20
        self.add = 0

    def calc(self):
        self.add = self.a+self.b

#Class 2
class Test2:
    def display(self):
        print('adding of two numbers: ',self.add)
#creating object for Class1
obj = Test()
#invoking calc method()
obj.calc()
#passing class1 object to class2
Test2.display(obj)

Add in in pom.xml give the following plugin:

<plugin>
  <artifactId>maven-surefire-plugin</artifactId>
  <version>2.10</version>
  <configuration>
    <useFile>false</useFile>
  </configuration>
</plugin>

I solved my problem in AngularJS as follows:

var configPopOver = {
        animation: 500,
        container: 'body',
        placement: function (context, source) {
                    var elBounding = source.getBoundingClientRect();
                    var pageWidth = angular.element('body')[0].clientWidth
                    var pageHeith = angular.element('body')[0].clientHeith

                    if (elBounding.left > (pageWidth*0.34) && elBounding.width < (pageWidth*0.67)) {
                        return "left";
                    }

                    if (elBounding.left < (pageWidth*0.34) && elBounding.width < (pageWidth*0.67)) {
                        return "right";
                    }

                    if (elBounding.top < 110){
                        return "bottom";
                    }

                    return "top";
                },
        html: true
    };

This function do the position of Bootstrap popover float to the best position, based on element position.

The eval statement tells the shell to take eval’s arguments as command and run them through the command-line. It is useful in a situation like below:

In your script if you are defining a command into a variable and later on you want to use that command then you should use eval:

/home/user1 > a="ls | more"
/home/user1 > $a
bash: command not found: ls | more
/home/user1 > # Above command didn't work as ls tried to list file with name pipe (|) and more. But these files are not there
/home/user1 > eval $a
file.txt
mailids
remote_cmd.sh
sample.txt
tmp
/home/user1 >

To improve performance of the operation, if you're always going to want to look up objects by some unique identifier, then you might consider using a Map<Integer,Dog>. This will provide constant-time lookup by key. You can still iterate over the objects themselves using the map values().

A quick code fragment to get you started:

// Populate the map
Map<Integer,Dog> dogs = new HashMap<Integer,Dog>();
for( Dog dog : /* dog source */ ) {
    dogs.put( dog.getId(), dog );
}

// Perform a lookup
Dog dog = dogs.get( id );

This will help speed things up a bit if you're performing multiple lookups of the same nature on the list. If you're just doing the one lookup, then you're going to incur the same loop overhead regardless.

To define a checked exception you create a subclass (or hierarchy of subclasses) of java.lang.Exception. For example:

public class FooException extends Exception {
  public FooException() { super(); }
  public FooException(String message) { super(message); }
  public FooException(String message, Throwable cause) { super(message, cause); }
  public FooException(Throwable cause) { super(cause); }
}

Methods that can potentially throw or propagate this exception must declare it:

public void calculate(int i) throws FooException, IOException;

... and code calling this method must either handle or propagate this exception (or both):

try {
  int i = 5;
  myObject.calculate(5);
} catch(FooException ex) {
  // Print error and terminate application.
  ex.printStackTrace();
  System.exit(1);
} catch(IOException ex) {
  // Rethrow as FooException.
  throw new FooException(ex);
}

You'll notice in the above example that IOException is caught and rethrown as FooException. This is a common technique used to encapsulate exceptions (typically when implementing an API).

Sometimes there will be situations where you don't want to force every method to declare your exception implementation in its throws clause. In this case you can create an unchecked exception. An unchecked exception is any exception that extends java.lang.RuntimeException (which itself is a subclass of java.lang.Exception):

public class FooRuntimeException extends RuntimeException {
  ...
}

Methods can throw or propagate FooRuntimeException exception without declaring it; e.g.

public void calculate(int i) {
  if (i < 0) {
    throw new FooRuntimeException("i < 0: " + i);
  }
}

Unchecked exceptions are typically used to denote a programmer error, for example passing an invalid argument to a method or attempting to breach an array index bounds.

The java.lang.Throwable class is the root of all errors and exceptions that can be thrown within Java. java.lang.Exception and java.lang.Error are both subclasses of Throwable. Anything that subclasses Throwable may be thrown or caught. However, it is typically bad practice to catch or throw Error as this is used to denote errors internal to the JVM that cannot usually be "handled" by the programmer (e.g. OutOfMemoryError). Likewise you should avoid catching Throwable, which could result in you catching Errors in addition to Exceptions.

SQL 2005 or later, CTEs are the standard way to go as per the examples shown.

SQL 2000, you can do it using UDFs -

CREATE FUNCTION udfPersonAndChildren
(
    @PersonID int
)
RETURNS @t TABLE (personid int, initials nchar(10), parentid int null)
AS
begin
    insert into @t 
    select * from people p      
    where personID=@PersonID

    while @@rowcount > 0
    begin
      insert into @t 
      select p.*
      from people p
        inner join @t o on p.parentid=o.personid
        left join @t o2 on p.personid=o2.personid
      where o2.personid is null
    end

    return
end

(which will work in 2005, it's just not the standard way of doing it. That said, if you find that the easier way to work, run with it)

If you really need to do this in SQL7, you can do roughly the above in a sproc but couldn't select from it - SQL7 doesn't support UDFs.

You can try htmlspecialchars_decode($string). It works for me.

http://www.w3schools.com/php/func_string_htmlspecialchars_decode.asp

How about something like this ...

var l1 = new List<int>() { 1,2,3,4,5,2,2,2,4,4,4,1 };

var g = l1.GroupBy( i => i );

foreach( var grp in g )
{
  Console.WriteLine( "{0} {1}", grp.Key, grp.Count() );
}

Edit per comment: I will try and do this justice. :)

In my example, it's a Func<int, TKey> because my list is ints. So, I'm telling GroupBy how to group my items. The Func takes a int and returns the the key for my grouping. In this case, I will get an IGrouping<int,int> (a grouping of ints keyed by an int). If I changed it to (i => i.ToString() ) for example, I would be keying my grouping by a string. You can imagine a less trivial example than keying by "1", "2", "3" ... maybe I make a function that returns "one", "two", "three" to be my keys ...

private string SampleMethod( int i )
{
  // magically return "One" if i == 1, "Two" if i == 2, etc.
}

So, that's a Func that would take an int and return a string, just like ...

i =>  // magically return "One" if i == 1, "Two" if i == 2, etc. 

But, since the original question called for knowing the original list value and it's count, I just used an integer to key my integer grouping to make my example simpler.

SELECT set_config('log_statement', 'all', true);

With a corresponding user right may use the query above after connect. This will affect logging until session ends.

You may not like this answer, but I think it's the RIGHT one. Don't change your stdout destination unless it's absolutely necessary (maybe you're using a library that only outputs to stdout??? clearly not the case here).

I think as a good habit you should prepare your data ahead of time as a string, then open your file and write the whole thing at once. This is because input/output operations are the longer you have a file handle open, the more likely an error is to occur with this file (file lock error, i/o error, etc). Just doing it all in one operation leaves no question for when it might have gone wrong.

Here's an example:

out_lines = []
for bamfile in bamfiles:
    filename = bamfile.split('/')[-1]
    out_lines.append('Filename: %s' % filename)
    samtoolsin = subprocess.Popen(["/share/bin/samtools/samtools","view",bamfile],
                                  stdout=subprocess.PIPE,bufsize=1)
    linelist= samtoolsin.stdout.readlines()
    print 'Readlines finished!'
    out_lines.extend(linelist)
    out_lines.append('\n')

And then when you're all done collecting your "data lines" one line per list item, you can join them with some '\n' characters to make the whole thing outputtable; maybe even wrap your output statement in a with block, for additional safety (will automatically close your output handle even if something goes wrong):

out_string = '\n'.join(out_lines)
out_filename = 'myfile.txt'
with open(out_filename, 'w') as outf:
    outf.write(out_string)
print "YAY MY STDOUT IS UNTAINTED!!!"

However if you have lots of data to write, you could write it one piece at a time. I don't think it's relevant to your application but here's the alternative:

out_filename = 'myfile.txt'
outf = open(out_filename, 'w')
for bamfile in bamfiles:
    filename = bamfile.split('/')[-1]
    outf.write('Filename: %s' % filename)
    samtoolsin = subprocess.Popen(["/share/bin/samtools/samtools","view",bamfile],
                                  stdout=subprocess.PIPE,bufsize=1)
    mydata = samtoolsin.stdout.read()
    outf.write(mydata)
outf.close()

The code below would be a bit more efficient than the answers presented above when dealing with larger datasets.

SELECT * FROM Call WHERE 
NOT EXISTS (SELECT 'x' FROM Phone_book where 
Phone_book.phone_number = Call.phone_number)

While @Andre is correct that there are issues with pseudo elements and their support, especially in older (IE) browsers, that support is improving all the time.

As for your question of, are there any issues, I'd say I've not really seen any, although the syntax for the pseudo-element can be a bit tricky, especially when first sussing it out. So:

div#top-level
  declarations: ...
  div.inside
    declarations: ...
    &:first-child
      declarations: ...

which compiles as one would expect:

div#top-level{
  declarations... }
div#top-level div.inside {
  declarations... }
div#top-level div.inside:first-child {
  declarations... }

I haven't seen any documentation on any of this, save for the statement that "sass can do everything that css can do." As always, with Haml and SASS the indentation is everything.

If you're dealing with an input element, I found it useful to set the pointer focus to back itself.

$('input').on('keydown', function(e) { 
    if (e.keyCode == 9) {
        $(this).focus();
       e.preventDefault();
    }
});

To sort by MULTIPLE COLUMN (Sort by column_1, and then sort by column_2)

with open('unsorted.csv',newline='') as csvfile:
    spamreader = csv.DictReader(csvfile, delimiter=";")
    sortedlist = sorted(spamreader, key=lambda row:(row['column_1'],row['column_2']), reverse=False)


with open('sorted.csv', 'w') as f:
    fieldnames = ['column_1', 'column_2', column_3]
    writer = csv.DictWriter(f, fieldnames=fieldnames)
    writer.writeheader()
    for row in sortedlist:
        writer.writerow(row)

It's /public_html/stats/*.

$ ~/myrepo> ls public_html/stats/
bar baz foo
$ ~/myrepo> cat .gitignore 
public_html/stats/*
$ ~/myrepo> git status
# On branch master
#
# Initial commit
#
# Untracked files:
#   (use "git add <file>..." to include in what will be committed)
#
#   .gitignore
nothing added to commit but untracked files present (use "git add" to track)
$ ~/myrepo>

Though the first approach is advocated as 'the angular like' approach, I feel this adds overheads.

Consider if I want to use this myservice.foo function in 10 different controllers. I will have to specify this 'myService' dependency and then $scope.callFoo scope property in all ten of them. This is simply a repetition and somehow violates the DRY principle.

Whereas, if I use the $rootScope approach, I specify this global function gobalFoo only once and it will be available in all my future controllers, no matter how many.

So does C99.

The IEEE 754 floating point representation used by all modern processors has several special bit patterns reserved for positive infinity (sign=0, exp=~0, frac=0), negative infinity (sign=1, exp=~0, frac=0), and many NaN (Not a Number: exp=~0, frac?0).

All you need to worry about: some arithmetic may cause floating point exceptions/traps, but those aren't limited to only these "interesting" constants.

Do you want your function to react to an array argument or variable arguments? If the latter, try:

var func = function(...rest) {
  alert(rest.length);

  // In JS, don't use for..in with arrays
  // use for..of that consumes array's pre-defined iterator
  // or a more functional approach
  rest.forEach((v) => console.log(v));
};

But if you wish to handle an array argument

var fn = function(arr) {
  alert(arr.length);

  for(var i of arr) {
    console.log(i);
  }
};

Wikipedia is built on MediaWiki, and here's the MediaWiki API.

If jQuery is okay, you can use find(). It's basically equivalent to the way you are doing it right now.

$('#note').find('#textid');

You can also use jQuery selectors to basically achieve the same thing:

$('#note #textid');

Using these methods to get something that already has an ID is kind of strange, but I'm supplying these assuming it's not really how you plan on using it.

On a side note, you should know ID's should be unique in your webpage. If you plan on having multiple elements with the same "ID" consider using a specific class name.

Update 2020.03.10

It's a breeze to use native JS for this:

document.querySelector('#note #textid');

If you want to first find #note then #textid you have to check the first querySelector result. If it fails to match, chaining is no longer possible :(

var parent = document.querySelector('#note');
var child = parent ? parent.querySelector('#textid') : null;

I think you just need COUNT(DISTINCT post_id) FROM votes.

See "4.2.7. Aggregate Expressions" section in http://www.postgresql.org/docs/current/static/sql-expressions.html.

EDIT: Corrected my careless mistake per Erwin's comment.

ip addr show | grep -E '^\s*inet' | grep -m1 global | awk '{ print $2 }' | sed 's|/.*||'

Just set all the selected time unit's displayFormat to MMM DD

options: {
  scales: {
    xAxes: [{
      type: 'time',
      time: {
        displayFormats: {
           'millisecond': 'MMM DD',
           'second': 'MMM DD',
           'minute': 'MMM DD',
           'hour': 'MMM DD',
           'day': 'MMM DD',
           'week': 'MMM DD',
           'month': 'MMM DD',
           'quarter': 'MMM DD',
           'year': 'MMM DD',
        }
        ...

Notice that I've set all the unit's display format to MMM DD. A better way, if you have control over the range of your data and the chart size, would be force a unit, like so

options: {
  scales: {
    xAxes: [{
      type: 'time',
      time: {
        unit: 'day',
        unitStepSize: 1,
        displayFormats: {
           'day': 'MMM DD'
        }
        ...

Fiddle - http://jsfiddle.net/prfd1m8q/

Taken from the javadoc spec

@see <a href="URL#value">label</a> : Adds a link as defined by URL#value. The URL#value is a relative or absolute URL. The Javadoc tool distinguishes this from other cases by looking for a less-than symbol (<) as the first character.

For example : @see <a href="http://www.google.com">Google</a>

<?php
 $dbhost = 'localhost:3036';
 $dbuser = 'root';
 $dbpass = 'rootpassword';

 $conn = mysql_connect($dbhost, $dbuser, $dbpass);

 if(! $conn ) {
  die('Could not connect: ' . mysql_error());
 }

 $table_name = "employee";
 $backup_file  = "/tmp/employee.sql";
 $sql = "SELECT * INTO OUTFILE '$backup_file' FROM $table_name";

 mysql_select_db('test_db');
 $retval = mysql_query( $sql, $conn );

 if(! $retval ) {
  die('Could not take data backup: ' . mysql_error());
 }

 echo "Backedup  data successfully\n";

 mysql_close($conn);
?>

You can use this too:

<?php
    $youtube_view_count = json_decode(file_get_contents('http://gdata.youtube.com/feeds/api/videos/wGG543FeHOE?v=2&alt=json'))->entry->{'yt$statistics'}->viewCount;
    echo $youtube_view_count;
    ?>

In addition to what other have said, you may also be interested to know that what in does is to call the list.__contains__ method, that you can define on any class you write and can get extremely handy to use python at his full extent.  

A dumb use may be:

>>> class ContainsEverything:
    def __init__(self):
        return None
    def __contains__(self, *elem, **k):
        return True


>>> a = ContainsEverything()
>>> 3 in a
True
>>> a in a
True
>>> False in a
True
>>> False not in a
False
>>>         

A simple solution for *nix based systems (macOS, Linux); and probably also Git bash on Windows.

PYTHONPATH=$PWD python test/test_antigravity.py

print statement easily works, unlike pytest test/test_antigravity.py. A perfect way for "scripts", but not really for unittesting.

Of course, I want to do a proper automated testing, I would consider pytest with appropriate settings.

upcasting means casting the object to a supertype, while downcasting means casting to a subtype.

In java, upcasting is not necessary as it's done automatically. And it's usually referred as implicit casting. You can specify it to make it clear to others.

Thus, writing

Animal a = (Animal)d;

or

Animal a = d;

leads to exactly the same point and in both cases will be executed the callme() from Dog.

Downcasting is instead necessary because you defined a as object of Animal. Currently you know it's a Dog, but java has no guarantees it's. Actually at runtime it could be different and java will throw a ClassCastException, would that happen. Of course it's not the case of your very sample example. If you wouldn't cast a to Animal, java couldn't even compile the application because Animal doesn't have method callme2().

In your example you cannot reach the code of callme() of Animal from UseAnimlas (because Dog overwrite it) unless the method would be as follow:

class Dog extends Animal 
{ 
    public void callme()
    {
        super.callme();
        System.out.println("In callme of Dog");
    }
    ... 
} 

You're not adding columns to your DataGridView

DataGridView dataGridView1 = new DataGridView();//Create new grid

dataGridView1.Columns[0].Name = "ItemID";// refer to column which is not there 

Is it clear now why you get an exception?

Add this line before you use columns to fix the error

dataGridView1.ColumnCount = 5;

Check your URL's protocol.

You will also see this error if you host an encrypted page (https) and open it as plain text (http) in Firefox.

The items with code "200 (cache)" were fulfilled directly from your browser cache, meaning that the original requests for the items were returned with headers indicating that the browser could cache them (e.g. future-dated Expires or Cache-Control: max-age headers), and that at the time you triggered the new request, those cached objects were still stored in local cache and had not yet expired.

304s, on the other hand, are the response of the server after the browser has checked if a file was modified since the last version it had cached (the answer being "no").

For most optimal web performance, you're best off setting a far-future Expires: or Cache-Control: max-age header for all assets, and then when an asset needs to be changed, changing the actual filename of the asset or appending a version string to requests for that asset. This eliminates the need for any request to be made unless the asset has definitely changed from the version in cache (no need for that 304 response). Google has more details on correct use of long-term caching.

for(int i=validData.length-1; i>=0; i--){
  System.out.println(validData[i]);
 }

function setSelectedIndex(s, v) {
    for ( var i = 0; i < s.options.length; i++ ) {
        if ( s.options[i].value == v ) {
            s.options[i].selected = true;
            return;
        }
    }
}

Where s is the dropdown and v is the value

Xamarin.Forms supports multiple navigation hosts built-in:

• NavigationPage, where the next page slide in,
• TabbedPage, the one you don't like
• CarouselPage, that allows for switching left and right to next/prev pages.

On top of this, all pages also supports PushModalAsync() which just push a new page on top of the existing one.

At the very end, if you want to make sure the user can't get back to the previous page (using a gesture or the back hardware button), you can keep the same Page displayed and replace its Content.

The suggested options of replacing the root page works as well, but you'll have to handle that differently for each platform.

 SELECT * FROM ALL_source WHERE UPPER(text) LIKE '%BLAH%'

EDIT Adding additional info:

 SELECT * FROM DBA_source WHERE UPPER(text) LIKE '%BLAH%'

The difference is dba_source will have the text of all stored objects. All_source will have the text of all stored objects accessible by the user performing the query. Oracle Database Reference 11g Release 2 (11.2)

Another difference is that you may not have access to dba_source.

This could be achieve with the below mentioned psuedo code approach

Import os import requests Data = os.execute(curl URL) R= Data.json()

Solution

1) Clean your VS.Net Solution

2) Rebuild Project.

3) Reset IIS

4) Run the project again.

Basically that solved my problem, but in my case i was not getting this error and suddenly my local environment starts giving me above error, so may be that trick work for me.

Not a full answer Ok so this is just to supplement the information about parseInt, which is still very valid. Express doesn't allow the req or res objects to be modified at all (immutable). So if you want to modify/use this data effectively, you must copy it to another variable (var year = req.params.year).

Another way to do this is:

mongo mongodb://mongoDbIPorDomain:port

To get the equivalent of a static constructor, you need to write a separate ordinary class to hold the static data and then make a static instance of that ordinary class.

class StaticStuff
{
     std::vector<char> letters_;

public:
     StaticStuff()
     {
         for (char c = 'a'; c <= 'z'; c++)
             letters_.push_back(c);
     }

     // provide some way to get at letters_
};

class Elsewhere
{
    static StaticStuff staticStuff; // constructor runs once, single instance

};

The only thing that worked for me was inspired from here: https://stackoverflow.com/a/35527407/2310544

For pure dd/MM/yyyy, this worked for me, with angular 2 beta 16:

{{ myDate | date:'d'}}/{{ myDate | date:'MM'}}/{{ myDate | date:'y'}}

This is going to sound really cheesy, but it's the best way I've been able to keep the terms straight in my head:

Declaration: Picture Thomas Jefferson giving a speech... "I HEREBY DECLARE THAT THIS FOO EXISTS IN THIS SOURCE CODE!!!"

Definition: picture a dictionary, you are looking up Foo and what it actually means.

A toast is for showing messages for short intervals of time; So, as per my understanding, you would like to customize it with adding an image to it and changing size, color of the message text. If that is all, you want to do, then there is no need to make a separate layout and inflate it to the Toast instance.

The default Toast's view contains a TextView for showing messages on it. So, if we have the resource id reference of that TextView, we can play with it. So below is what can you do to achieve this:

Toast toast = Toast.makeText(this, "I am custom Toast!", Toast.LENGTH_LONG);
View toastView = toast.getView(); // This'll return the default View of the Toast.

/* And now you can get the TextView of the default View of the Toast. */
TextView toastMessage = (TextView) toastView.findViewById(android.R.id.message);
toastMessage.setTextSize(25);
toastMessage.setTextColor(Color.RED);
toastMessage.setCompoundDrawablesWithIntrinsicBounds(R.mipmap.ic_fly, 0, 0, 0);
toastMessage.setGravity(Gravity.CENTER);
toastMessage.setCompoundDrawablePadding(16);
toastView.setBackgroundColor(Color.CYAN);
toast.show();

In above code you can see, you can add image to TextView via setCompoundDrawablesWithIntrinsicBounds(int left, int top, int right, int bottom) whichever position relative to TextView you want to.

Update:

Have written a builder class to simplify the above purpose; Here is the link: https://gist.github.com/TheLittleNaruto/6fc8f6a2b0d0583a240bd78313ba83bc

Check the HowToUse.kt in above link.

Output:

Note: If your app targets API level 26 or higher, the system imposes restrictions on using or creating background services unless the app itself is in the foreground.

If an app needs to create a foreground service, the app should call startForegroundService(). That method creates a background service, but the method signals to the system that the service will promote itself to the foreground.

Once the service has been created, the service must call its startForeground() method within five seconds.

9.5 and newer:

PostgreSQL 9.5 and newer support INSERT ... ON CONFLICT (key) DO UPDATE (and ON CONFLICT (key) DO NOTHING), i.e. upsert.

Comparison with ON DUPLICATE KEY UPDATE.

Quick explanation.

For usage see the manual - specifically the conflict_action clause in the syntax diagram, and the explanatory text.

Unlike the solutions for 9.4 and older that are given below, this feature works with multiple conflicting rows and it doesn't require exclusive locking or a retry loop.

The commit adding the feature is here and the discussion around its development is here.

If you're on 9.5 and don't need to be backward-compatible you can stop reading now.

9.4 and older:

PostgreSQL doesn't have any built-in UPSERT (or MERGE) facility, and doing it efficiently in the face of concurrent use is very difficult.

This article discusses the problem in useful detail.

In general you must choose between two options:

• Individual insert/update operations in a retry loop; or
• Locking the table and doing batch merge

Individual row retry loop

Using individual row upserts in a retry loop is the reasonable option if you want many connections concurrently trying to perform inserts.

The PostgreSQL documentation contains a useful procedure that'll let you do this in a loop inside the database. It guards against lost updates and insert races, unlike most naive solutions. It will only work in READ COMMITTED mode and is only safe if it's the only thing you do in the transaction, though. The function won't work correctly if triggers or secondary unique keys cause unique violations.

This strategy is very inefficient. Whenever practical you should queue up work and do a bulk upsert as described below instead.

Many attempted solutions to this problem fail to consider rollbacks, so they result in incomplete updates. Two transactions race with each other; one of them successfully INSERTs; the other gets a duplicate key error and does an UPDATE instead. The UPDATE blocks waiting for the INSERT to rollback or commit. When it rolls back, the UPDATE condition re-check matches zero rows, so even though the UPDATE commits it hasn't actually done the upsert you expected. You have to check the result row counts and re-try where necessary.

Some attempted solutions also fail to consider SELECT races. If you try the obvious and simple:

-- THIS IS WRONG. DO NOT COPY IT. It's an EXAMPLE.

BEGIN;

UPDATE testtable
SET somedata = 'blah'
WHERE id = 2;

-- Remember, this is WRONG. Do NOT COPY IT.

INSERT INTO testtable (id, somedata)
SELECT 2, 'blah'
WHERE NOT EXISTS (SELECT 1 FROM testtable WHERE testtable.id = 2);

COMMIT;

then when two run at once there are several failure modes. One is the already discussed issue with an update re-check. Another is where both UPDATE at the same time, matching zero rows and continuing. Then they both do the EXISTS test, which happens before the INSERT. Both get zero rows, so both do the INSERT. One fails with a duplicate key error.

This is why you need a re-try loop. You might think that you can prevent duplicate key errors or lost updates with clever SQL, but you can't. You need to check row counts or handle duplicate key errors (depending on the chosen approach) and re-try.

Please don't roll your own solution for this. Like with message queuing, it's probably wrong.

Bulk upsert with lock

Sometimes you want to do a bulk upsert, where you have a new data set that you want to merge into an older existing data set. This is vastly more efficient than individual row upserts and should be preferred whenever practical.

In this case, you typically follow the following process:

• CREATE a TEMPORARY table

• COPY or bulk-insert the new data into the temp table

• LOCK the target table IN EXCLUSIVE MODE. This permits other transactions to SELECT, but not make any changes to the table.

• Do an UPDATE ... FROM of existing records using the values in the temp table;

• Do an INSERT of rows that don't already exist in the target table;

• COMMIT, releasing the lock.

For example, for the example given in the question, using multi-valued INSERT to populate the temp table:

BEGIN;

CREATE TEMPORARY TABLE newvals(id integer, somedata text);

INSERT INTO newvals(id, somedata) VALUES (2, 'Joe'), (3, 'Alan');

LOCK TABLE testtable IN EXCLUSIVE MODE;

UPDATE testtable
SET somedata = newvals.somedata
FROM newvals
WHERE newvals.id = testtable.id;

INSERT INTO testtable
SELECT newvals.id, newvals.somedata
FROM newvals
LEFT OUTER JOIN testtable ON (testtable.id = newvals.id)
WHERE testtable.id IS NULL;

COMMIT;

Related reading

• UPSERT wiki page
• UPSERTisms in Postgres
• Insert, on duplicate update in PostgreSQL?
• http://petereisentraut.blogspot.com/2010/05/merge-syntax.html
• Upsert with a transaction
• Is SELECT or INSERT in a function prone to race conditions?
• SQL MERGE on the PostgreSQL wiki
• Most idiomatic way to implement UPSERT in Postgresql nowadays

What about MERGE?

SQL-standard MERGE actually has poorly defined concurrency semantics and is not suitable for upserting without locking a table first.

It's a really useful OLAP statement for data merging, but it's not actually a useful solution for concurrency-safe upsert. There's lots of advice to people using other DBMSes to use MERGE for upserts, but it's actually wrong.

Other DBs:

• INSERT ... ON DUPLICATE KEY UPDATE in MySQL
• MERGE from MS SQL Server (but see above about MERGE problems)
• MERGE from Oracle (but see above about MERGE problems)

Streams Java 8

Along with forEach method that accepts a lambda expression we have also got stream APIs, in Java 8.

Iterate over entries (Using forEach and Streams):

sample.forEach((k,v) -> System.out.println(k + "=" + v)); 
sample.entrySet().stream().forEachOrdered((entry) -> {
            Object currentKey = entry.getKey();
            Object currentValue = entry.getValue();
            System.out.println(currentKey + "=" + currentValue);
        });
sample.entrySet().parallelStream().forEach((entry) -> {
            Object currentKey = entry.getKey();
            Object currentValue = entry.getValue();
            System.out.println(currentKey + "=" + currentValue);
        });

The advantage with streams is they can be parallelized easily and can be useful when we have multiple CPUs at disposal. We simply need to use parallelStream() in place of stream() above. With parallel streams it makes more sense to use forEach as forEachOrdered would make no difference in performance. If we want to iterate over keys we can use sample.keySet() and for values sample.values().

Why forEachOrdered and not forEach with streams ?

Streams also provide forEach method but the behaviour of forEach is explicitly nondeterministic where as the forEachOrdered performs an action for each element of this stream, in the encounter order of the stream if the stream has a defined encounter order. So forEach does not guarantee that the order would be kept. Also check this for more.

Watch every 5 seconds ...

watch -n 5 ls -l

If you wish to have visual confirmation of changes, append --differences prior to the ls command.

According to the OSX man page, there's also

The --cumulative option makes highlighting "sticky", presenting a running display of all positions that have ever changed. The -t or --no-title option turns off the header showing the interval, command, and current time at the top of the display, as well as the following blank line.

Linux/Unix man page can be found here

you can include @ in a 'scriptBlock' like this:

@(
  echo don't echoed
  hostname
)
echo echoed

and especially do not do that :)

for %%a in ("@") do %%~aecho %%~a

You can set the cookie after having checked if it exists with a value.

 $(document).ready(function(){            
      if ($.cookie('cookie')) { //if cookie isset
         //do stuff here like hide a popup when cookie isset
         //document.getElementById("hideElement").style.display = "none";
      }else{
         var CookieSet = $.cookie('cookie', 'value'); //set cookie
      }       
 });

If you need to use a double number:

keyboardType: TextInputType.numberWithOptions(decimal: true),
inputFormatters: [FilteringTextInputFormatter.allow(RegExp('[0-9.,]')),],
onChanged: (value) => doubleVar = double.parse(value),

RegExp('[0-9.,]') allows for digits between 0 and 9, also comma and dot.

double.parse() converts from string to double.

Don't forget you need: import 'package:flutter/services.dart';

Do you really want the result to come up in an input box? If not, consider a table with borders set to other than transparent and use

document.getElementById('sum').innerHTML = sum;

tl;dr

LocalDate.parse( "2013-09-18" )

… and …

myLocalDate.toString()  // Example: 2013-09-18

java.time

The Question and other Answers are out-of-date. The troublesome old legacy date-time classes are now supplanted by the java.time classes.

ISO 8601

Your input string happens to comply with standard ISO 8601 format, YYYY-MM-DD. The java.time classes use ISO 8601 formats by default when parsing and generating string representations of date-time values. So no need to specify a formatting pattern.

LocalDate

The LocalDate class represents a date-only value without time-of-day and without time zone.

LocalDate ld = LocalDate.parse( "2013-09-18" );

About java.time

The java.time framework is built into Java 8 and later. These classes supplant the troublesome old legacy date-time classes such as java.util.Date, Calendar, & SimpleDateFormat.

The Joda-Time project, now in maintenance mode, advises migration to the java.time classes.

To learn more, see the Oracle Tutorial. And search Stack Overflow for many examples and explanations. Specification is JSR 310.

You may exchange java.time objects directly with your database. Use a JDBC driver compliant with JDBC 4.2 or later. No need for strings, no need for java.sql.* classes.

Where to obtain the java.time classes?

• Java SE 8, Java SE 9, Java SE 10, and later
  • Built-in.
  • Part of the standard Java API with a bundled implementation.
  • Java 9 adds some minor features and fixes.
• Java SE 6 and Java SE 7
  • Much of the java.time functionality is back-ported to Java 6 & 7 in ThreeTen-Backport.
• Android
  • Later versions of Android bundle implementations of the java.time classes.
  • For earlier Android (<26), the ThreeTenABP project adapts ThreeTen-Backport (mentioned above). See How to use ThreeTenABP….

The ThreeTen-Extra project extends java.time with additional classes. This project is a proving ground for possible future additions to java.time. You may find some useful classes here such as Interval, YearWeek, YearQuarter, and more.

Use the :not pseudo-class to exclude the classes you don't want the hover to apply to:

FIDDLE

<div class="test"> blah </div>
<div class="test"> blah </div>
<div class="test nohover"> blah </div>

.test:not(.nohover):hover {  
    border: 1px solid red; 
}

This does what you want in one css rule!

Rewrite the query into this

SELECT st1.*, st2.relevant_field FROM sometable st1
INNER JOIN sometable st2 ON (st1.relevant_field = st2.relevant_field)
GROUP BY st1.id  /* list a unique sometable field here*/
HAVING COUNT(*) > 1

I think st2.relevant_field must be in the select, because otherwise the having clause will give an error, but I'm not 100% sure

Never use IN with a subquery; this is notoriously slow.
Only ever use IN with a fixed list of values.

More tips

1. If you want to make queries faster, don't do a SELECT * only select the fields that you really need.
2. Make sure you have an index on relevant_field to speed up the equi-join.
3. Make sure to group by on the primary key.
4. If you are on InnoDB and you only select indexed fields (and things are not too complex) than MySQL will resolve your query using only the indexes, speeding things way up.

General solution for 90% of your IN (select queries

Use this code

SELECT * FROM sometable a WHERE EXISTS (
  SELECT 1 FROM sometable b
  WHERE a.relevant_field = b.relevant_field
  GROUP BY b.relevant_field
  HAVING count(*) > 1) 

Excellent question.

I'll explain it in the simplest way possible: Say you have 5 apples in your basket. Each of those apples is an object of type Apple, which has some characteristics (i.e. big, round, grows on trees).

In programming terms, you can have a class called Apple, which has variables size:big, shape:round, habitat:grows on trees. To have 5 apples in your basket, you need to instantiate 5 apples. Apple apple1, Apple apple2, Apple apple3 etc....

Alternatively: Objects are the definitions of something, instances are the physical things.

Does this make sense?

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {

    super.onActivityResult(requestCode, resultCode, data);
    ///*
    if (requestCode == PICK_FROM_FILE && resultCode == RESULT_OK && null != data){



        uri = data.getData();

        String[] prjection ={MediaStore.Images.Media.DATA};

        Cursor cursor = getContentResolver().query(uri,prjection,null,null,null);

        cursor.moveToFirst();

        int columnIndex = cursor.getColumnIndex(prjection[0]);

        ImagePath = cursor.getString(columnIndex);

        cursor.close();

        FixBitmap = BitmapFactory.decodeFile(ImagePath);

        ShowSelectedImage = (ImageView)findViewById(R.id.imageView);

      //  FixBitmap = new BitmapDrawable(ImagePath);
        int nh = (int) ( FixBitmap.getHeight() * (512.0 / FixBitmap.getWidth()) );
        FixBitmap = Bitmap.createScaledBitmap(FixBitmap, 512, nh, true);

       // ShowSelectedImage.setImageBitmap(BitmapFactory.decodeFile(ImagePath));

        ShowSelectedImage.setImageBitmap(FixBitmap);

    }
}

This code is work

For checking one date is after another by using isAfter() method.

moment('2020-01-20').isAfter('2020-01-21'); // false
moment('2020-01-20').isAfter('2020-01-19'); // true

For checking one date is before another by using isBefore() method.

moment('2020-01-20').isBefore('2020-01-21'); // true
moment('2020-01-20').isBefore('2020-01-19'); // false

For checking one date is same as another by using isSame() method.

moment('2020-01-20').isSame('2020-01-21'); // false
moment('2020-01-20').isSame('2020-01-20'); // true

I was searching for the iOS PCH file having the same problem, if you got here like me too, the solution that I've found is by clearing derived data; Close Simulator(s), go to xCode prefs -> locations -> go to the derived data file path, close xCode, delete the files in the derived data folder, re launch and cheers :)

There is a bug on Ubuntu with MySQL 5.6 and 5.7 where var/run/mysqld/ would disappear whenever MySQL service stopped or is rebooted. This prevents MySQL from running at all. Found this workaround, which isn't perfect, but at least it gets it running after stopping/reboot:

mkdir /var/run/mysqld/
chown mysqld /var/run/mysqld/

I think you're looking for the .prepend function in jQuery. Example code:

$("#E").prepend("<p>Code goes here, yo!</p>");

Just to make this absolutely clear for all:

A .MDF file is “typically” a SQL Server data file however it is important to note that it does NOT have to be.

This is because .MDF is nothing more than a recommended/preferred notation but the extension itself does not actually dictate the file type.

To illustrate this, if someone wanted to create their primary data file with an extension of .gbn they could go ahead and do so without issue.

To qualify the preferred naming conventions:

• .mdf - Primary database data file.
• .ndf - Other database data files i.e. non Primary.
• .ldf - Log data file.

This compares 2 unsorted arrays:

function areEqual(a, b) {
  if ( a.length != b.length) {
    return false;
  }
  return a.filter(function(i) {
    return !b.includes(i);
  }).length === 0;  
}

Issue : Android Studio marks R in red with error message “cannot resolve symbol R”

Solution : I resolved the 'R' error by adding the following to the import & then rebuilding the project and the error went away.

import com.mkyong.android.R;

Explanation: Sometimes the Android Studio does not add the import even when you do build multiple times or run the 'optimize import' command. Sometimes the error is resolved when you 'restart Android Studio' but at times even after restarting Android Studio multiple times the error remains. Thanks.

Yes.

You can create anonymous methods or lambda expressions:

Func<string, string> PrefixTrimmer = delegate(string x) {
    return x ?? "";
};
Func<string, string> PrefixTrimmer = x => x ?? "";

Something like that:

def runProcess(exe):    
    p = subprocess.Popen(exe, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
    while(True):
        # returns None while subprocess is running
        retcode = p.poll() 
        line = p.stdout.readline()
        yield line
        if retcode is not None:
            break

Note, that I'm redirecting stderr to stdout, it might not be exactly what you want, but I want error messages also.

This function yields line by line as they come (normally you'd have to wait for subprocess to finish to get the output as a whole).

For your case the usage would be:

for line in runProcess('mysqladmin create test -uroot -pmysqladmin12'.split()):
    print line,

Try this:

var sql = @"Update [User] SET FirstName = @FirstName WHERE Id = @Id";

ctx.Database.ExecuteSqlCommand(
    sql,
    new SqlParameter("@FirstName", firstname),
    new SqlParameter("@Id", id));

Short summary:

Always prefer notifyAll() over notify() unless you have a massively parallel application where a large number of threads all do the same thing.

Explanation:

notify() [...] wakes up a single thread. Because notify() doesn't allow you to specify the thread that is woken up, it is useful only in massively parallel applications — that is, programs with a large number of threads, all doing similar chores. In such an application, you don't care which thread gets woken up.

source: https://docs.oracle.com/javase/tutorial/essential/concurrency/guardmeth.html

Compare notify() with notifyAll() in the above described situation: a massively parallel application where threads are doing the same thing. If you call notifyAll() in that case, notifyAll() will induce the waking up (i.e. scheduling) of a huge number of threads, many of them unnecessarily (since only one thread can actually proceed, namely the thread which will be granted the monitor for the object wait(), notify(), or notifyAll() was called on), therefore wasting computing resources.

Thus, if you don't have an application where a huge number of threads do the same thing concurrently, prefer notifyAll() over notify(). Why? Because, as other users have already answered in this forum, notify()

wakes up a single thread that is waiting on this object's monitor. [...] The choice is arbitrary and occurs at the discretion of the implementation.

source: Java SE8 API (https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#notify--)

Imagine you have a producer consumer application where consumers are ready (i.e. wait() ing) to consume, producers are ready (i.e. wait() ing) to produce and the queue of items (to be produced / consumed) is empty. In that case, notify() might wake up only consumers and never producers because the choice who is waken up is arbitrary. The producer consumer cycle wouldn't make any progress although producers and consumers are ready to produce and consume, respectively. Instead, a consumer is woken up (i.e. leaving the wait() status), doesn't take an item out of the queue because it's empty, and notify() s another consumer to proceed.

In contrast, notifyAll() awakens both producers and consumers. The choice who is scheduled depends on the scheduler. Of course, depending on the scheduler's implementation, the scheduler might also only schedule consumers (e.g. if you assign consumer threads a very high priority). However, the assumption here is that the danger of the scheduler scheduling only consumers is lower than the danger of the JVM only waking up consumers because any reasonably implemented scheduler doesn't make just arbitrary decisions. Rather, most scheduler implementations make at least some effort to prevent starvation.

Just wanted to share a pure C++ 98 work around:

#include <map>

std::map<std::string, std::string> aka;

struct akaInit
{
    akaInit()
    {
        aka[ "George" ] = "John";
        aka[ "Joe" ] = "Al";
        aka[ "Phil" ] = "Sue";
        aka[ "Smitty" ] = "Yando";
    }
} AkaInit;

If you are using this in chrome/chromium browser(ex: in Ubuntu 14.04), You can use one of the below command to tackle this issue.

ThinkPad-T430:~$ google-chrome --allow-file-access-from-files
ThinkPad-T430:~$ google-chrome --allow-file-access-from-files fileName.html

ThinkPad-T430:~$ chromium-browser --allow-file-access-from-files
ThinkPad-T430:~$ chromium-browser --allow-file-access-from-files fileName.html

This will allow you to load the file in chrome or chromium. If you have to do the same operation for windows you can add this switch in properties of the chrome shortcut or run it from cmd with the flag. This operation is not allowed in Chrome, Opera, Internet Explorer by default. By default it works only in firefox and safari. Hence using this command will help you.

Alternately you can also host it on any web server (Example:Tomcat-java,NodeJS-JS,Tornado-Python, etc) based on what language you are comfortable with. This will work from any browser.

Manual cleanup:

You can KILL the processid.

mysql> show full processlist;
+---------+------------+-------------------+------+---------+-------+-------+-----------------------+
| Id      | User       | Host              | db   | Command | Time  | State | Info                  |
+---------+------------+-------------------+------+---------+-------+-------+-----------------------+
| 1193777 | TestUser12 | 192.168.1.11:3775 | www  | Sleep   | 25946 |       | NULL                  |
+---------+------------+-------------------+------+---------+-------+-------+-----------------------+

mysql> kill 1193777;

But:

• the php application might report errors (or the webserver, check the error logs)
• don't fix what is not broken - if you're not short on connections, just leave them be.

Automatic cleaner service ;)

Or you configure your mysql-server by setting a shorter timeout on wait_timeout and interactive_timeout

mysql> show variables like "%timeout%";
+--------------------------+-------+
| Variable_name            | Value |
+--------------------------+-------+
| connect_timeout          | 5     |
| delayed_insert_timeout   | 300   |
| innodb_lock_wait_timeout | 50    |
| interactive_timeout      | 28800 |
| net_read_timeout         | 30    |
| net_write_timeout        | 60    |
| slave_net_timeout        | 3600  |
| table_lock_wait_timeout  | 50    |
| wait_timeout             | 28800 |
+--------------------------+-------+
9 rows in set (0.00 sec)

Set with:

set global wait_timeout=3;
set global interactive_timeout=3;

(and also set in your configuration file, for when your server restarts)

But you're treating the symptoms instead of the underlying cause - why are the connections open? If the PHP script finished, shouldn't they close? Make sure your webserver is not using connection pooling...

server {
  server_name example.com;
  root /path/to/root;
  location / {
    # bla bla
  }
  location /demo {
    alias /path/to/root/production/folder/here;
  }
}

If you need to use try_files inside /demo you'll need to replace alias with a root and do a rewrite because of the bug explained here

Tomcat is merely an HTTP server and Java servlet container. JBoss and GlassFish are full-blown Java EE application servers, including an EJB container and all the other features of that stack. On the other hand, Tomcat has a lighter memory footprint (~60-70 MB), while those Java EE servers weigh in at hundreds of megs. Tomcat is very popular for simple web applications, or applications using frameworks such as Spring that do not require a full Java EE server. Administration of a Tomcat server is arguably easier, as there are fewer moving parts.

However, for applications that do require a full Java EE stack (or at least more pieces that could easily be bolted-on to Tomcat)... JBoss and GlassFish are two of the most popular open source offerings (the third one is Apache Geronimo, upon which the free version of IBM WebSphere is built). JBoss has a larger and deeper user community, and a more mature codebase. However, JBoss lags significantly behind GlassFish in implementing the current Java EE specs. Also, for those who prefer a GUI-based admin system... GlassFish's admin console is extremely slick, whereas most administration in JBoss is done with a command-line and text editor. GlassFish comes straight from Sun/Oracle, with all the advantages that can offer. JBoss is NOT under the control of Sun/Oracle, with all the advantages THAT can offer.

If youre using Maven, here's something for your pom.xml file

<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>

To eliminate the need for the cmd variable, you can do this:

eval 'mysql AMORE -u root --password="password" -h localhost -e "select host from amoreconfig"'

After searching the Web and trying many different ways, here's what I'd suggest for Java EE 6 authentication:

Set up the security realm:

In my case, I had the users in the database. So I followed this blog post to create a JDBC Realm that could authenticate users based on username and MD5-hashed passwords in my database table:

http://blog.gamatam.com/2009/11/jdbc-realm-setup-with-glassfish-v3.html

Note: the post talks about a user and a group table in the database. I had a User class with a UserType enum attribute mapped via javax.persistence annotations to the database. I configured the realm with the same table for users and groups, using the userType column as the group column and it worked fine.

Use form authentication:

Still following the above blog post, configure your web.xml and sun-web.xml, but instead of using BASIC authentication, use FORM (actually, it doesn't matter which one you use, but I ended up using FORM). Use the standard HTML , not the JSF .

Then use BalusC's tip above on lazy initializing the user information from the database. He suggested doing it in a managed bean getting the principal from the faces context. I used, instead, a stateful session bean to store session information for each user, so I injected the session context:

 @Resource
 private SessionContext sessionContext;

With the principal, I can check the username and, using the EJB Entity Manager, get the User information from the database and store in my SessionInformation EJB.

Logout:

I also looked around for the best way to logout. The best one that I've found is using a Servlet:

 @WebServlet(name = "LogoutServlet", urlPatterns = {"/logout"})
 public class LogoutServlet extends HttpServlet {
  @Override
  protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
   HttpSession session = request.getSession(false);

   // Destroys the session for this user.
   if (session != null)
        session.invalidate();

   // Redirects back to the initial page.
   response.sendRedirect(request.getContextPath());
  }
 }

Although my answer is really late considering the date of the question, I hope this helps other people that end up here from Google, just like I did.

Ciao,

Vítor Souza

I tested a simple solution that works for me! My javascript was in a js separate file. What I did is that I placed the javascript for the new element into the html that was loaded with ajax, and it works fine for me! This is for those having big files of javascript!!

Find the sha1 for the commit you want to revert to:

za$ git reflog
... snip ...
cf42fa2... HEAD@{0}: commit: fixed misc bugs
~
~
cf42fa2... HEAD@{84}: commit: fixed params for .....
73b9363... HEAD@{85}: commit: Don't symlink to themes on deployment.
547cc1b... HEAD@{86}: commit: Deploy to effectif.com web server.
1dc3298... HEAD@{87}: commit: Updated the theme.
18c3f51... HEAD@{88}: commit: Verify with Google webmaster tools.
26fbb9c... HEAD@{89}: checkout: moving to effectif

And then use --mixed flag so that you "reset HEAD and index":

za$ git reset --mixed cf42fa2

Available flags:

za$ git reset -h

-q, --quiet           be quiet, only report errors
--mixed               reset HEAD and index
--soft                reset only HEAD
--hard                reset HEAD, index and working tree
--merge               reset HEAD, index and working tree
--keep                reset HEAD but keep local changes
--recurse-submodules[=<reset>]
                      control recursive updating of submodules
-p, --patch           select hunks interactively
-N, --intent-to-add

The simplest solution to this problem is that you just need to use \" for space separated arguments when running a shell script:

#!/bin/bash
myFunction() {
  echo $1
  echo $2
  echo $3
}
myFunction "firstString" "\"Hello World\"" "thirdString"

I know this question is answered still and I am not trying to be smart here. I'll just want to share another method on this topic.

Download applications with apk grail

APK Grail providing the free zip file of the application.

You can use following commands to extract public/private key from a PKCS#12 container:

• PKCS#1 Private key

  openssl pkcs12 -in yourP12File.pfx -nocerts -out privateKey.pem
  

• Certificates:

  openssl pkcs12 -in yourP12File.pfx -clcerts -nokeys -out publicCert.pem
  

This looks like a more promising solution: IntelliJ Android UI Designer.

http://blogs.jetbrains.com/idea/2012/06/android-ui-designer-coming-in-intellij-idea-12/

I did this in simple way...

1. Un-Install node from control panel [Windows 7]
2. Install node again
3. Install protractor npm install --global --verbose protractor
   Update web driver manager.
   

works fine for me.

Hope this helps you....

Try Using DateTime::createFromFormat

$date = DateTime::createFromFormat('d/m/Y', "24/04/2012");
echo $date->format('Y-m-d');

Output

2012-04-24

EDIT:

If the date is 5/4/2010 (both D/M/YYYY or DD/MM/YYYY), this below method is used to convert 5/4/2010 to 2010-4-5 (both YYYY-MM-DD or YYYY-M-D) format.

$old_date = explode('/', '5/4/2010'); 
$new_data = $old_date[2].'-'.$old_date[1].'-'.$old_date[0];

OUTPUT:

2010-4-5

Keep in mind that the Fusion API is unmanaged. The current reference for it is here: Development Guide > Unmanaged API Reference > Fusion

However, there is a managed method to add an assembly to GAC: System.EnterpriseServices.Internal.Publish.GacInstall And, if you need to register any Types: System.EnterpriseServices.Internal.Publish.RegisterAssembly

The reference for the publish class is here: .NET Framework Class Library > System.EnterpriseServices Namespaces > System.EnterpriseServices.Internal

However, these methods were designed for installing components that are required by a web service application such as ASP.NET or WCF. As a result they don't register the assemblies with Fusion; thus, they can be uninstalled by other applications, or using gacutil and cause your assembly to stop working. So, if you use them outside of a web server where an administrator is managing the GAC then be sure to add a reference to your application in SOFTWARE\Wow6432Node\Microsoft\Fusion\References (for 64-bit OS) or SOFTWARE\Microsoft\Fusion\References (for 32-bit OS) so that nobody can remove your support assemblies unless they uninstall your application.

A maybe not-so-elegant method, which I think is just a variation of what some other people have said, is to just hardcode it. Many journals have a template that in some way allows for table footnotes, so I try to keep things pretty basic. Although, there really are some incredible packages already out there, and I think this thread does a good job of pointing that out.

\documentclass{article}
\begin{document}
\begin{table}[!th]
\renewcommand{\arraystretch}{1.3} % adds row cushion
\caption{Data, level$^a$, and sources$^b$}
\vspace{4mm}
\centering
\begin{tabular}{|l|l|c|c|}
  \hline      
  \textbf{Data}  & \textbf{Description}   & \textbf{Level} & \textbf{Source} \\
  \hline      
  \hline
  Data1  &  Description. . . . . . . . . . . . . . . . . .   &  cnty & USGS \\
  \hline
  Data2  &  Description. . . . . . . . . . . . . . . . . .   &  MSA & USGS \\
  \hline
  Data3  &  Description. . . . . . . . . . . . . . . . . .   &  cnty & Census  \\
  \hline  
\end{tabular}
\end{table}
\footnotesize{$^a$ The smallest spatial unit is county, $^b$ more details in appendix A}\\
\end{document}

If you're willing to transmit some data and that you don't need to be secured (any public infos) you can use a CORS proxy, it's very easy, you'll not have to change anything in your code or in server side (especially of it's not your server like the Yahoo API or OpenWeather). I've used it to fetch JSON files with an XMLHttpRequest and it worked fine.

Have you tried

(setq  tab-width  4)

If you call methods in your constructor that subclasses override, it means you are less likely to be referencing variables that don’t exist yet if you divide your initialization logically between the constructor and the method.

Have a look on this sample link http://www.javapractices.com/topic/TopicAction.do?Id=215

The .NET Library EPPlus implements a conversation from the string definition to the built in number. See class ExcelNumberFormat:

internal static int GetFromBuildIdFromFormat(string format)
{
    switch (format)
    {
        case "General":
            return 0;
        case "0":
            return 1;
        case "0.00":
            return 2;
        case "#,##0":
            return 3;
        case "#,##0.00":
            return 4;
        case "0%":
            return 9;
        case "0.00%":
            return 10;
        case "0.00E+00":
            return 11;
        case "# ?/?":
            return 12;
        case "# ??/??":
            return 13;
        case "mm-dd-yy":
            return 14;
        case "d-mmm-yy":
            return 15;
        case "d-mmm":
            return 16;
        case "mmm-yy":
            return 17;
        case "h:mm AM/PM":
            return 18;
        case "h:mm:ss AM/PM":
            return 19;
        case "h:mm":
            return 20;
        case "h:mm:ss":
            return 21;
        case "m/d/yy h:mm":
            return 22;
        case "#,##0 ;(#,##0)":
            return 37;
        case "#,##0 ;[Red](#,##0)":
            return 38;
        case "#,##0.00;(#,##0.00)":
            return 39;
        case "#,##0.00;[Red](#,#)":
            return 40;
        case "mm:ss":
            return 45;
        case "[h]:mm:ss":
            return 46;
        case "mmss.0":
            return 47;
        case "##0.0":
            return 48;
        case "@":
            return 49;
        default:
            return int.MinValue;
    }
}

When you use one of these formats, Excel will automatically identify them as a standard format.

For namespaces within rooms looping the list of clients in a room (similar to Nav's answer) is one of only two approaches I've found that will work. The other is to use exclude. E.G.

socket.on('message',function(data) {
    io.of( 'namespace' ).in( data.roomID ).except( socket.id ).emit('message',data);
}

Runtime is a general term that refers to any library, framework, or platform that your code runs on.

The C and C++ runtimes are collections of functions.

The .NET runtime contains an intermediate language interpreter, a garbage collector, and more.

I solved this by uncheking the "Use command-line client" option from Subversion settings.

This works with version 1.6 and 1.7 only. See @Vic's answer for SVN version 1.8.

I'm the maintainer of Mongoose. findById() is a built-in method on Mongoose models. findById(id) is equivalent to findOne({ _id: id }), with one caveat: findById() with 0 params is equivalent to findOne({ _id: null }).

You can read more about findById() on the Mongoose docs and this findById() tutorial.

class Program
{
    static void Main()
    {
        Console.BackgroundColor = ConsoleColor.Blue;
        Console.ForegroundColor = ConsoleColor.White;
        Console.WriteLine("White on blue.");
        Console.WriteLine("Another line.");
        Console.ResetColor();
    }
}

Taken from here.

One can use navigator.platform to get the operating system on which browser is installed.

function getPlatform() {
   var platform = ["Win32", "Android", "iOS"];

   for (var i = 0; i < platform.length; i++) {

       if (navigator.platform.indexOf(platform[i]) >- 1) {

           return platform[i];
       }
   }
}

getPlatform();

What gives? It works. Just ignore it:

@SuppressWarnings("unchecked")

No, you cannot parameterize it. I'd however rather use a List<Map<K, V>> instead.

List<Map<String, String>> listOfMaps = new ArrayList<Map<String, String>>();

To learn more about collections and maps, have a look at this tutorial.

Basically the two styles, are like Yin and Yang. One is organized, while the other chaotic. There are situations when Functional programming is the obvious choice, and other situations were Procedural programming is the better choice. This is why there are at least two languages that have recently come out with a new version, that embraces both programming styles. ( Perl 6 and D 2 )

#Procedural:#

• The output of a routine does not always have a direct correlation with the input.
• Everything is done in a specific order.
• Execution of a routine may have side effects.
• Tends to emphasize implementing solutions in a linear fashion.

##Perl 6 ##

sub factorial ( UInt:D $n is copy ) returns UInt {

  # modify "outside" state
  state $call-count++;
  # in this case it is rather pointless as
  # it can't even be accessed from outside

  my $result = 1;

  loop ( ; $n > 0 ; $n-- ){

    $result *= $n;

  }

  return $result;
}

##D 2##

int factorial( int n ){

  int result = 1;

  for( ; n > 0 ; n-- ){
    result *= n;
  }

  return result;
}

#Functional:#

• Often recursive.
• Always returns the same output for a given input.
• Order of evaluation is usually undefined.
• Must be stateless. i.e. No operation can have side effects.
• Good fit for parallel execution
• Tends to emphasize a divide and conquer approach.
• May have the feature of Lazy Evaluation.

##Haskell## ( copied from Wikipedia );

fac :: Integer -> Integer

fac 0 = 1
fac n | n > 0 = n * fac (n-1)

or in one line:

fac n = if n > 0 then n * fac (n-1) else 1

##Perl 6 ##

proto sub factorial ( UInt:D $n ) returns UInt {*}

multi sub factorial (  0 ) { 1 }
multi sub factorial ( $n ) { $n * samewith $n-1 } # { $n * factorial $n-1 }

##D 2##

pure int factorial( invariant int n ){
  if( n <= 1 ){
    return 1;
  }else{
    return n * factorial( n-1 );
  }
}

#Side note:#

Factorial is actually a common example to show how easy it is to create new operators in Perl 6 the same way you would create a subroutine. This feature is so ingrained into Perl 6 that most operators in the Rakudo implementation are defined this way. It also allows you to add your own multi candidates to existing operators.

sub postfix:< ! > ( UInt:D $n --> UInt )
  is tighter(&infix:<*>)
  { [*] 2 .. $n }

say 5!; # 120?

This example also shows range creation (2..$n) and the list reduction meta-operator ([ OPERATOR ] LIST) combined with the numeric infix multiplication operator. (*)
It also shows that you can put --> UInt in the signature instead of returns UInt after it.

( You can get away with starting the range with 2 as the multiply "operator" will return 1 when called without any arguments )

That error is normally seen when the value given to JSON.parse is actually undefined. So, I would check the code that is trying to parse this - most likely you are not parsing the actual string shown here.

Separate the increments with a comma too.

for(int a = 0, b = 1; a<cards.length-1; b=a+1, a++)

TRUNCATE TABLE table;

is the SQL command. In PHP, you'd use:

mysql_query('TRUNCATE TABLE table;');