You're using port 3000 on the client-side. I'd hazard a guess that's the Angular port and not the server port? It should be connecting to the server port.
Using Moshi:
When building your Retrofit Service add .asLenient() to your MoshiConverterFactory. You don't need a ScalarsConverter. It should look something like this:
return Retrofit.Builder()
.client(okHttpClient)
.baseUrl(ENDPOINT)
.addConverterFactory(MoshiConverterFactory.create().asLenient())
.build()
.create(UserService::class.java)
What I did is first check what are the running processes by
SELECT * FROM pg_stat_activity WHERE state = 'active';
Find the process you want to kill, then type:
SELECT pg_cancel_backend(<pid of the process>)
This basically "starts" a request to terminate gracefully, which may be satisfied after some time, though the query comes back immediately.
If the process cannot be killed, try:
SELECT pg_terminate_backend(<pid of the process>)
If anyone comes to this thread and has this issue when you remote to a VMware VM with windows 10 1903, disabling 3d in the graphics card worked for me.
maybe this error came because this version
of Sql Server is not installed
connectionString="Data Source=(LocalDB)\v12.0;....
and you don't have to install it
the fastest fix is to change it to any installed version you have
in my case I change it from v12.0
to MSSQLLocalDB
I found this problem too. Because centos service depend on multi-user.target for none desktop Cenots 7.2. so I delete multi-user.target from my .service file. It had missed.
In my case the problem was with hostname/public DNS.I associated Elastice IP with my instance and then my DNS got changed. I was trying to connect with old DNS. Changing it to new solved the problem. You can check the detail by going to your instance and then clicking view details.
Fist of all make sure your SQL server is running. Actually I'm working on windows and I have installed a nice tool which is called MySQL workbench (you can find it here for almost any platform ).
Thus I just create a new database to test the connection, let's call it stackoverflow, with one table called user.
SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0;
SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0;
SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='TRADITIONAL,ALLOW_INVALID_DATES';
DROP SCHEMA IF EXISTS `stackoverflow` ;
CREATE SCHEMA IF NOT EXISTS `stackoverflow` DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci ;
USE `stackoverflow` ;
-- -----------------------------------------------------
-- Table `stackoverflow`.`user`
-- -----------------------------------------------------
DROP TABLE IF EXISTS `stackoverflow`.`user` ;
CREATE TABLE IF NOT EXISTS `stackoverflow`.`user` (
`iduser` INT NOT NULL AUTO_INCREMENT,
`name` VARCHAR(75) NOT NULL,
`email` VARCHAR(150) NOT NULL,
PRIMARY KEY (`iduser`),
UNIQUE INDEX `iduser_UNIQUE` (`iduser` ASC),
UNIQUE INDEX `email_UNIQUE` (`email` ASC))
ENGINE = InnoDB;
SET SQL_MODE=@OLD_SQL_MODE;
SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS;
SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS;
You can reduce important part to
CREATE SCHEMA IF NOT EXISTS `stackoverflow`
CREATE TABLE IF NOT EXISTS `stackoverflow`.`user` (
`iduser` INT NOT NULL AUTO_INCREMENT,
`name` VARCHAR(75) NOT NULL,
`email` VARCHAR(150) NOT NULL,
PRIMARY KEY (`iduser`),
UNIQUE INDEX `iduser_UNIQUE` (`iduser` ASC),
UNIQUE INDEX `email_UNIQUE` (`email` ASC))
So now I have my brand new stackoverflow database. Let's connect to it throught Netbeans. Launch netbeans and go to the services panel
Now right click on databases: new connection.. Choose MySql connector, they already come packed with netbeans.
Then fill in the gaps the data you need. As shown in the picture add the database name and remove from the connection url the optional parameters as l?zeroDateTimeBehaviour=convertToNull
. Use the right user name and password and test the connection.
As you can see connection is successful.
Click FINISH.
You will have your connection successfully working and available under the services.
Okay, redis is pretty user friendly but there are some gotchas.
Here are just some easy commands for working with redis on Ubuntu:
install:
sudo apt-get install redis-server
start with conf:
sudo redis-server <path to conf>
sudo redis-server config/redis.conf
stop with conf:
redis-ctl shutdown
(not sure how this shuts down the pid specified in the conf. Redis must save the path to the pid somewhere on boot)
log:
tail -f /var/log/redis/redis-server.log
Also, various example confs floating around online and on this site were beyond useless. The best, sure fire way to get a compatible conf is to copy-paste the one your installation is already using. You should be able to find it here:
/etc/redis/redis.conf
Then paste it at <path to conf>
, tweak as needed and you're good to go.
Android 9 SSID showing NULL values use this code..
ConnectivityManager connManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = connManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
if (networkInfo.isConnected()) {
WifiManager wifiManager = (WifiManager) context.getApplicationContext().getSystemService(Context.WIFI_SERVICE);
WifiInfo wifiInfo = wifiManager.getConnectionInfo();
wifiInfo.getSSID();
String name = networkInfo.getExtraInfo();
String ssid = wifiInfo.getSSID();
return ssid.replaceAll("^\"|\"$", "");
}
Electricity went down and got this error. Solution was to double click your .ppk (Putty Private Key) and enter your password.
You put
registerReceiver(receiver, new IntentFilter("android.bleutooth.device.action.UUID"));
with "bluetooth" spelled "bleutooth".
socket.disconnect()
is a synonym to socket.close()
which disconnect the socket manually.
When you type in client side :
const socket = io('http://localhost');
this will open a connection with autoConnect: true
, so the lib will try to reconnect again when you disconnect the socket from server, to disable the autoConnection:
const socket = io('http://localhost', {autoConnect: false});
socket.open();// synonym to socket.connect()
And if you want you can manually reconnect:
socket.on('disconnect', () => {
socket.open();
});
The error in the below line of code (as mentioned by the requestor-William) is due to the following reason:
fromBook.Sheets("Report").Copy Before:=newBook.Sheets("Sheet1")
The destination sheet you are trying to copy to is closed. (Here newbook.Sheets("Sheet1")
).
Add the below statement just before copying to destination.
Application.Workbooks.Open ("YOUR SHEET NAME")
This will solve the problem!!
Ok, instead of identifying players by name track with sockets through which they have connected. You can have a implementation like
var allClients = [];
io.sockets.on('connection', function(socket) {
allClients.push(socket);
socket.on('disconnect', function() {
console.log('Got disconnect!');
var i = allClients.indexOf(socket);
allClients.splice(i, 1);
});
});
Hope this will help you to think in another way
@robertklep's answer to check socket.connected is correct except for reconnect event, https://socket.io/docs/client-api/#event-reconnect
As the document said it is "Fired upon a successful reconnection." but when you check socket.connected
then it is false.
Not sure it is a bug or intentional.
ListenForClients
is getting invoked twice (on two different threads) - once from the constructor, once from the explicit method call in Main
. When two instances of the TcpListener
try to listen on the same port, you get that error.
I was in your shoes for a while and finally ended up using node.js, because it can do hybrid solutions like having web and socket server in one. So php backend can submit requests thru http to node web server and then broadcast it with websocket. Very efficiant way to go.
I use WinMerge. It is free and works pretty well (works for files and directories).
Here is a really simple way to set the timeout:
RestTemplate restTemplate = new RestTemplate(getClientHttpRequestFactory());
private ClientHttpRequestFactory getClientHttpRequestFactory() {
int timeout = 5000;
HttpComponentsClientHttpRequestFactory clientHttpRequestFactory =
new HttpComponentsClientHttpRequestFactory();
clientHttpRequestFactory.setConnectTimeout(timeout);
return clientHttpRequestFactory;
}
Once I got 499 "Request has been forbidden by antivirus" as an AJAX http response (false positive by Kaspersky Internet Security with light heuristic analysis, deep heuristic analysis knew correctly there was nothing wrong).
I see the other answer just posted, but I think you are interactive with clients playing your game, so I may pose another approach (while BufferedReader is definitely valid in some cases).
If you wanted to... you could delegate the "registration" responsibility to the client. I.e. you would have a collection of connected users with a timestamp on the last message received from each... if a client times out, you would force a re-registration of the client, but that leads to the quote and idea below.
I have read that to actually determine whether or not a socket has been closed data must be written to the output stream and an exception must be caught. This seems like a really unclean way to handle this situation.
If your Java code did not close/disconnect the Socket, then how else would you be notified that the remote host closed your connection? Ultimately, your try/catch is doing roughly the same thing that a poller listening for events on the ACTUAL socket would be doing. Consider the following:
I think one of the features of the abstracted languages is that you are abstracted from the minutia. Think of the using keyword in C# (try/finally) for SqlConnection s or whatever... it's just the cost of doing business... I think that try/catch/finally is the accepted and necesary pattern for Socket use.
Have you tried loading the socket.io script not from a relative URL?
You're using:
<script src="socket.io/socket.io.js"></script>
And:
socket.connect('http://127.0.0.1:8080');
You should try:
<script src="http://localhost:8080/socket.io/socket.io.js"></script>
And:
socket.connect('http://localhost:8080');
Switch localhost:8080
with whatever fits your current setup.
Also, depending on your setup, you may have some issues communicating to the server when loading the client page from a different domain (same-origin policy). This can be overcome in different ways (outside of the scope of this answer, google/SO it).
Thanks for enlightening us Cypawer.
I also tried this app https://play.google.com/store/apps/details?id=com.oneguyinabasement.leapwifi
and it worked flawlessly.
Windows has two different settings in which priority is established. There is the metric value which you have already set in the adapter settings, and then there is the connection priority in the network connections settings.
To change the priority of the connections:
I just had the same problem/question and solved it like this (only client code):
var io = io.connect('localhost');
io.on('connect', function () {
console.log(this.socket.sessionid);
});
Your null pointer exception seems to be on this line:
String url = intent.getExtras().getString("userurl");
because intent.getExtras()
returns null when the intent doesn't have any extras.
You have to realize that this piece of code:
Intent Main = new Intent(this, ToClass.class);
Main.putExtra("userurl", url);
startActivity(Main);
doesn't start the activity you wrote in Main.java, it will attempt to start an activity called ToClass
and if that doesn't exist, your app crashes.
Also, there is no such thing as "android.intent.action.start"
so the manifest should look more like:
<activity android:name=".start" android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name= ".Main">
</activity>
I hope this fixes some of the issues you are encountering but I strongly suggest you check out some "getting started" tutorials for android development and build up from there.
There is indentation problem. The code below will work:
import textwrap
def sendMail(FROM,TO,SUBJECT,TEXT,SERVER):
import smtplib
"""this is some test documentation in the function"""
message = textwrap.dedent("""\
From: %s
To: %s
Subject: %s
%s
""" % (FROM, ", ".join(TO), SUBJECT, TEXT))
# Send the mail
server = smtplib.SMTP(SERVER)
server.sendmail(FROM, TO, message)
server.quit()
Declare receiver as null and then Put register and unregister methods in onResume() and onPause() of the activity respectively.
@Override
protected void onResume() {
super.onResume();
if (receiver == null) {
filter = new IntentFilter(ResponseReceiver.ACTION_RESP);
filter.addCategory(Intent.CATEGORY_DEFAULT);
receiver = new ResponseReceiver();
registerReceiver(receiver, filter);
}
}
@Override
protected void onPause() {
super.onPause();
if (receiver != null) {
unregisterReceiver(receiver);
receiver = null;
}
}
Long time reader, first time helper ;)
I'm going through the same hellish
experience here with a Prolific USB <> Serial adapter and so far Linux is the easiest to get it to work.
On CentOS, I didn't need to install any drivers etc.. That said,
dmesg | grep -i tty
or dmesg | grep -i usb
showed me /dev/ttyUSB0. screen ttyUSB0 9600
didn't do the trick for me like it did in OSXHowever, this helped: https://www.centos.org/forums/viewtopic.php?t=21271
So install minicom (yum install minicom
) then enter its settings (minicom -s
).
Then select Serial Port Setup
and change the Serial Device (Option A) to /dev/ttyUSB0, or whatever your device file is as it slightly differs per distro.
Then change the Bps (Option E) to 9600 and the rest should be default (8N1 Y N)
Save as default, then simply minicom
and Bob's your uncle.
HTH.
When using AsyncTask Update the UI in onPostExecute method
@Override
protected void onPostExecute(String s) {
// Update UI here
}
I have this function in my shell rc file, based on @Yoichi's answer:
nohup-template () {
[[ "$1" = "" ]] && echo "Example usage:\nnohup-template urxvtd" && return 0
nohup "$1" > /dev/null 2>&1 &
}
You can use it this way:
nohup-template "command you would execute here"
This is how I implemeted Activity->Service Communication: on my Activity i had
private static class MyResultReciever extends ResultReceiver {
/**
* Create a new ResultReceive to receive results. Your
* {@link #onReceiveResult} method will be called from the thread running
* <var>handler</var> if given, or from an arbitrary thread if null.
*
* @param handler
*/
public MyResultReciever(Handler handler) {
super(handler);
}
@Override
protected void onReceiveResult(int resultCode, Bundle resultData) {
if (resultCode == 100) {
//dostuff
}
}
And then I used this to start my Service
protected void onCreate(Bundle savedInstanceState) {
MyResultReciever resultReciever = new MyResultReciever(handler);
service = new Intent(this, MyService.class);
service.putExtra("receiver", resultReciever);
startService(service);
}
In my Service i had
public int onStartCommand(Intent intent, int flags, int startId) {
if (intent != null)
resultReceiver = intent.getParcelableExtra("receiver");
return Service.START_STICKY;
}
Hope this Helps
I could not access the context object directly.
My solution is as following:
Context appContext = Android.App.Application.Context;
var wifiManager = (WifiManager)appContext.GetSystemService(WifiService);
wifiManager.SetWifiEnabled(state);
Also I had to change some writings eg. WIFI_SERVICE vs. WifiService.
I would highly recommend the REST client Retrofit.
I have found this well written blog post extremely helpful, it also contains simple example code. The author uses Retrofit to make the network calls and Otto to implement a data bus pattern:
http://www.mdswanson.com/blog/2014/04/07/durable-android-rest-clients.html
In main.xml file
You can put the following attrubute to validate only alphabatics character can accept in edittext.
Do this :
android:entries="abcdefghijklmnopqrstuvwxyz"
Following the advice from NibblyPig and zendar, I came up with the code below, which works on every test I made. I ended up needing both the ping, and the poll. The ping will let me know if the cable has been disconnected, or the physical layer otherwise disrupted (router powered off, etc). But sometimes after reconnect I get a RST, the ping is ok, but the tcp state is not.
#region CHECKS THE SOCKET'S HEALTH
if (_tcpClient.Client.Connected)
{
//Do a ping test to see if the server is reachable
try
{
Ping pingTest = new Ping()
PingReply reply = pingTest.Send(ServeripAddress);
if (reply.Status != IPStatus.Success) ConnectionState = false;
} catch (PingException) { ConnectionState = false; }
//See if the tcp state is ok
if (_tcpClient.Client.Poll(5000, SelectMode.SelectRead) && (_tcpClient.Client.Available == 0))
{
ConnectionState = false;
}
}
}
else { ConnectionState = false; }
#endregion
Replace void *disconnectFunc;
with void (*disconnectFunc)();
to declare function pointer type variable. Or even better use a typedef
:
typedef void (*func_t)(); // pointer to function with no args and void return
...
func_t fptr; // variable of pointer to function
...
void D::setDisconnectFunc( func_t func )
{
fptr = func;
}
void D::disconnected()
{
fptr();
connected = false;
}
I've got this exception because of circular reference in entity.In entity that look like
public class Catalog
{
public int Id { get; set; }
public int ParentId { get; set; }
public Catalog Parent { get; set; }
public ICollection<Catalog> ChildCatalogs { get; set; }
}
I added [IgnoreDataMemberAttribute] to the Parent property. And that solved the problem.
Note that exact reason why your code is frozen is not because you set too high request.recv() buffer size. Here is explained What means buffer size in socket.recv(buffer_size)
This code will work until it'll receive an empty TCP message (if you'd print this empty message, it'd show b''
):
while True:
data = self.request.recv(1024)
if not data: break
And note, that there is no way to send empty TCP message. socket.send(b'')
simply won't work.
Why? Because empty message is sent only when you type socket.close()
, so your script will loop as long as you won't close your connection.
As Hans L pointed out here are some good methods to end message.
My take:
public static class SocketExtensions
{
/// <summary>
/// Connects the specified socket.
/// </summary>
/// <param name="socket">The socket.</param>
/// <param name="endpoint">The IP endpoint.</param>
/// <param name="timeout">The timeout.</param>
public static void Connect(this Socket socket, EndPoint endpoint, TimeSpan timeout)
{
var result = socket.BeginConnect(endpoint, null, null);
bool success = result.AsyncWaitHandle.WaitOne(timeout, true);
if (success)
{
socket.EndConnect(result);
}
else
{
socket.Close();
throw new SocketException(10060); // Connection timed out.
}
}
}
On OpenWRT the only way to reliably do this, at least for me, is by running these commands:
# Get switch name
swconfig list
# assuming switch name is "switch0"
swconfig dev switch0 show | grep link:
# Possible output
root@OpenWrt:~# swconfig dev switch0 show | grep link:
link: port:0 link:up speed:1000baseT full-duplex txflow rxflow
link: port:1 link:up speed:1000baseT full-duplex txflow rxflow eee100 eee1000 auto
link: port:2 link:up speed:1000baseT full-duplex txflow rxflow eee100 eee1000 auto
link: port:3 link:down
link: port:4 link:up speed:1000baseT full-duplex eee100 eee1000 auto
link: port:5 link:down
link: port:6 link:up speed:1000baseT full-duplex txflow rxflow
This will show either "link:down" or "link:up" on every port of your switch.
Implementing heartbeat into your system might be a solution. This is only possible if both client and server are under your control. You can have a DateTime object keeping track of the time when the last bytes were received from the socket. And assume that the socket not responded over a certain interval are lost. This will only work if you have heartbeat/custom keep alive implemented.
It's really easy to do: reliable and not messy:
Try Clients.Client.Send(BufferByte) Catch verror As Exception BufferString = verror.ToString End Try If BufferString <> "" Then EventLog.Text &= "User disconnected: " + vbNewLine Clients.Close() End If
We have been using Git for sometime, recently our Git server's harddrive crashed and we could not revert back to the latest state. We managed to get back to few days old state. When the server was back up. Everyone in the team pulled/pushed their changes and voila, the server is back to current state.
Take a look at this tutorial, it's for FreeBSD but also applies to OS X. http://people.freebsd.org/~arved/vlan/vlan_en.html
I would do this:
data["list"].append({'b':'2'})
so simply you are adding an object to the list that is present in "data"
I know a simple answer!
Open your cmd, the type in: cd C:\directory your file is in
and then type python your progam.py
DO NOT USE self::
, use static::
There is another aspect of self:: that is worth mentioning. Annoyingly self::
refers to the scope at the point of definition not at the point of execution. Consider this simple class with two methods:
class Person
{
public static function status()
{
self::getStatus();
}
protected static function getStatus()
{
echo "Person is alive";
}
}
If we call Person::status()
we will see "Person is alive" . Now consider what happens when we make a class that inherits from this:
class Deceased extends Person
{
protected static function getStatus()
{
echo "Person is deceased";
}
}
Calling Deceased::status()
we would expect to see "Person is deceased" however what we see is "Person is alive" as the scope contains the original method definition when call to self::getStatus()
was defined.
PHP 5.3 has a solution. the static::
resolution operator implements "late static binding" which is a fancy way of saying that it's bound to the scope of the class called. Change the line in status()
to static::getStatus()
and the results are what you would expect. In older versions of PHP you will have to find a kludge to do this.
So to answer the question not as asked ...
$this->
refers to the current object (an instance of a class), whereas static::
refers to a class
To search google using API you should use Google Custom Search, scraping web page is not allowed
In java you can use CustomSearch API Client Library for Java
The maven dependency is:
<dependency>
<groupId>com.google.apis</groupId>
<artifactId>google-api-services-customsearch</artifactId>
<version>v1-rev57-1.23.0</version>
</dependency>
Example code searching using Google CustomSearch API Client Library
public static void main(String[] args) throws GeneralSecurityException, IOException {
String searchQuery = "test"; //The query to search
String cx = "002845322276752338984:vxqzfa86nqc"; //Your search engine
//Instance Customsearch
Customsearch cs = new Customsearch.Builder(GoogleNetHttpTransport.newTrustedTransport(), JacksonFactory.getDefaultInstance(), null)
.setApplicationName("MyApplication")
.setGoogleClientRequestInitializer(new CustomsearchRequestInitializer("your api key"))
.build();
//Set search parameter
Customsearch.Cse.List list = cs.cse().list(searchQuery).setCx(cx);
//Execute search
Search result = list.execute();
if (result.getItems()!=null){
for (Result ri : result.getItems()) {
//Get title, link, body etc. from search
System.out.println(ri.getTitle() + ", " + ri.getLink());
}
}
}
As you can see you will need to request an api key and setup an own search engine id, cx.
Note that you can search the whole web by selecting "Search entire web" on basic tab settings during setup of cx, but results will not be exactly the same as a normal browser google search.
Currently (date of answer) you get 100 api calls per day for free, then google like to share your profit.
You can also delete a range of lines in a file. For example to delete stored procedures in a SQL file.
sed '/CREATE PROCEDURE.*/,/END ;/d' sqllines.sql
This will remove all lines between CREATE PROCEDURE and END ;.
I have cleaned up many sql files withe this sed command.
The generic collections will perform better than their non-generic counterparts, especially when iterating through many items. This is because boxing and unboxing no longer occurs.
Postman currently does not support that.
You may use this online tester by Websocket.in: https://www.websocket.in/test-online
line=$((${RANDOM} % $(wc -l < /etc/passwd)))
sed -n "${line}p" /etc/passwd
just with your file instead.
In this example I used the file /etc/password, using the special variable ${RANDOM}
(about which I learned here), and the sed
expression you had, only difference is that I am using double quotes instead of single to allow the variable expansion.
There is an alternative solution to this problem which also deals with duplicate matches.
We start with 2 lists of equal length: emails
, otherarray
. The objective is to remove items from both lists for each index i
where emails[i] == '[email protected]'
.
This can be achieved using a list comprehension and then splitting via zip
:
emails = ['[email protected]', '[email protected]', '[email protected]']
otherarray = ['some', 'other', 'details']
from operator import itemgetter
res = [(i, j) for i, j in zip(emails, otherarray) if i!= '[email protected]']
emails, otherarray = map(list, map(itemgetter(0, 1), zip(*res)))
print(emails) # ['[email protected]', '[email protected]']
print(otherarray) # ['some', 'details']
Seriously try some of these, you can choose fixed width or more fluid layouts, the choice is yours! Really easy to implement too.
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class UserController extends CI_Controller {
public function verifyUser() {
$userName = $_POST['userName'];
$userPassword = $_POST['userPassword'];
$status = array("STATUS"=>"false");
if($userName=='admin' && $userPassword=='admin'){
$status = array("STATUS"=>"true");
}
echo json_encode ($status) ;
}
}
function makeAjaxCall(){
$.ajax({
type: "post",
url: "http://localhost/CodeIgnitorTutorial/index.php/usercontroller/verifyUser",
cache: false,
data: $('#userForm').serialize(),
success: function(json){
try{
var obj = jQuery.parseJSON(json);
alert( obj['STATUS']);
}catch(e) {
alert('Exception while request..');
}
},
error: function(){
alert('Error while request..');
}
});
}
Here is a version of Matthew James Davis's answer with the Python tuple methods added in:
class Tuple extends Array {
constructor(...items) {
super(...items);
Object.freeze(this);
}
toArray() {
return [...this];
}
toString() {
return '('+super.toString()+')';
}
count(item) {
var arr = this.toArray();
var result = 0;
for(var i = 0; i < arr.length; i++) {
if(arr[i] === item) {
result++;
}
}
return result;
}
}
let tuple = new Tuple("Jim", 35);
let [name,age] = tuple;
console.log("tuple:"+tuple)
console.log("name:"+name)
console.log("age:"+age)
_x000D_
Number of parameters is the amount of numbers that can be changed in the model. Mathematically this means number of dimensions of your optimization problem. For you as a programmer, each of this parameters is a floating point number, which typically takes 4 bytes of memory, allowing you to predict the size of this model once saved.
This formula for this number is different for each neural network layer type, but for Dense layer it is simple: each neuron has one bias parameter and one weight per input:
N = n_neurons * ( n_inputs + 1)
.
To debug / inspect your rpm I suggest to use redline which is a java program
Usage :
java -cp redline-1.2.1-jar-with-dependencies.jar org.redline_rpm.Scanner foo.rpm
If you use Google Maps API v3 you can use setIcon
e.g.
marker.setIcon('http://maps.google.com/mapfiles/ms/icons/green-dot.png')
Or as part of marker init:
marker = new google.maps.Marker({
icon: 'http://...'
});
Other colours:
Use the following piece of code to update default markers with different colors.
(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_ROSE)
Apache part - enabling you to open https://localhost/xyz
There is the config file xampp/apache/conf/extra/httpd-ssl.conf which contains all the ssl specific configuration. It's fairly well documented, so have a read of the comments and take look at http://httpd.apache.org/docs/2.2/ssl/.
The files starts with <IfModule ssl_module>
, so it only has an effect if the apache has been started with its mod_ssl module.
Open the file xampp/apache/conf/httpd.conf in an editor and search for the line
#LoadModule ssl_module modules/mod_ssl.so
remove the hashmark, save the file and re-start the apache. The webserver should now start with xampp's basic/default ssl confguration; good enough for testing but you might want to read up a bit more about mod_ssl in the apache documentation.
PHP part - enabling adldap to use ldap over ssl
adldap needs php's openssl extension to use "ldap over ssl" connections. The openssl extension ships as a dll with xampp. You must "tell" php to load this dll, e.g. by having an extension=nameofmodule.dll
in your php.ini
Run
echo 'ini: ', get_cfg_var('cfg_file_path');
It should show you which ini file your php installation uses (may differ between the php-apache-module and the php-cli version).
Open this file in an editor and search for
;extension=php_openssl.dll
remove the semicolon, save the file and re-start the apache.
Using **kwargs and default values is easy. Sometimes, however, you shouldn't be using **kwargs in the first place.
In this case, we're not really making best use of **kwargs.
class ExampleClass( object ):
def __init__(self, **kwargs):
self.val = kwargs.get('val',"default1")
self.val2 = kwargs.get('val2',"default2")
The above is a "why bother?" declaration. It is the same as
class ExampleClass( object ):
def __init__(self, val="default1", val2="default2"):
self.val = val
self.val2 = val2
When you're using **kwargs, you mean that a keyword is not just optional, but conditional. There are more complex rules than simple default values.
When you're using **kwargs, you usually mean something more like the following, where simple defaults don't apply.
class ExampleClass( object ):
def __init__(self, **kwargs):
self.val = "default1"
self.val2 = "default2"
if "val" in kwargs:
self.val = kwargs["val"]
self.val2 = 2*self.val
elif "val2" in kwargs:
self.val2 = kwargs["val2"]
self.val = self.val2 / 2
else:
raise TypeError( "must provide val= or val2= parameter values" )
tightVNC 2.5.X and even pre 2.5 supports multi monitor. When you connect, you get a huge virtual monitor. However, this is also has disadvantages. UltaVNC (Tho when I tried it, was buggy in this area) allows you to connect to one huge virtual monitor or just to 1 screen at a time. (With a button to cycle through them) TightVNC also plan to support such a feature.. (When , no idea) This feature is important as if you have large multi monitors and connecting over a reasonably slow link.. The screen updates are just to slow.. Cutting down to one monitor to focus on is desirable.
I like tightVNC, but UltraVNC seems to have a few more features right now..
I have found tightVNC more solid. And that is why I have stuck with it.
I would try both. They both work well, but I imagine one would suite slightly more then the other.
Additional attributes (in this case, the second onClick
) will be ignored. So, instead of onclick
calling both fbLikeDump();
and WriteCookie();
, it will only call fbLikeDump();
. To fix, simply define a single onclick
attribute and call both functions within it:
<input type="button" value="Don't show this again! " onclick="fbLikeDump();WriteCookie();" />
Use:
setTimeout(startTimer,startInterval);
You're calling startTimer() and feed it's result (which is undefined) as an argument to setTimeout().
Hey If you want to print selected area or div ,Try This.
<style type="text/css">
@media print
{
body * { visibility: hidden; }
.div2 * { visibility: visible; }
.div2 { position: absolute; top: 40px; left: 30px; }
}
</style>
Hope it helps you
I opened monitor.bat in android-sdks\tools and started the device manager there and I was able to create the AVD.
robocopy seems to be the most versatile. See it's other options in the help
robocopy /?
robocopy SRC DST /E /MOV
I know this question is well answered, but just wanted to list the steps I take to create a new branch "myNewBranch" and push to remote ("origin" in my case) and set up tracking. Consider this the "TL;DR" version :)
# create new branch and checkout that branch
git checkout -b myNewBranch
# now push branch to remote
git push origin myNewBranch
# set up the new branch to track remote branch from origin
git branch --set-upstream-to=origin/myNewBranch myNewBranch
<h:button>
The <h:button>
generates a HTML <input type="button">
. The generated element uses JavaScript to navigate to the page given by the attribute outcome
, using a HTTP GET request.
E.g.
<h:button value="GET button" outcome="otherpage" />
will generate
<input type="button" onclick="window.location.href='/contextpath/otherpage.xhtml'; return false;" value="GET button" />
Even though this ends up in a (bookmarkable) URL change in the browser address bar, this is not SEO-friendly. Searchbots won't follow the URL in the onclick
. You'd better use a <h:outputLink>
or <h:link>
if SEO is important on the given URL. You could if necessary throw in some CSS on the generated HTML <a>
element to make it to look like a button.
Do note that while you can put an EL expression referring a method in outcome
attribute as below,
<h:button value="GET button" outcome="#{bean.getOutcome()}" />
it will not be invoked when you click the button. Instead, it is already invoked when the page containing the button is rendered for the sole purpose to obtain the navigation outcome to be embedded in the generated onclick
code. If you ever attempted to use the action method syntax as in outcome="#{bean.action}"
, you would already be hinted by this mistake/misconception by facing a javax.el.ELException: Could not find property actionMethod in class com.example.Bean.
If you intend to invoke a method as result of a POST request, use <h:commandButton>
instead, see below. Or if you intend to invoke a method as result of a GET request, head to Invoke JSF managed bean action on page load or if you also have GET request parameters via <f:param>
, How do I process GET query string URL parameters in backing bean on page load?
<h:commandButton>
The <h:commandButton>
generates a HTML <input type="submit">
button which submits by default the parent <h:form>
using HTTP POST method and invokes the actions attached to action
, actionListener
and/or <f:ajax listener>
, if any. The <h:form>
is required.
E.g.
<h:form id="form">
<h:commandButton id="button" value="POST button" action="otherpage" />
</h:form>
will generate
<form id="form" name="form" method="post" action="/contextpath/currentpage.xhtml" enctype="application/x-www-form-urlencoded">
<input type="hidden" name="form" value="form" />
<input type="submit" name="form:button" value="POST button" />
<input type="hidden" name="javax.faces.ViewState" id="javax.faces.ViewState" value="...." autocomplete="off" />
</form>
Note that it thus submits to the current page (the form action URL will show up in the browser address bar). It will afterwards forward to the target page, without any change in the URL in the browser address bar. You could add ?faces-redirect=true
parameter to the outcome value to trigger a redirect after POST (as per the Post-Redirect-Get pattern) so that the target URL becomes bookmarkable.
The <h:commandButton>
is usually exclusively used to submit a POST form, not to perform page-to-page navigation. Normally, the action
points to some business action, such as saving the form data in DB, which returns a String
outcome.
<h:commandButton ... action="#{bean.save}" />
with
public String save() {
// ...
return "otherpage";
}
Returning null
or void
will bring you back to the same view. Returning an empty string also, but it would recreate any view scoped bean. These days, with modern JSF2 and <f:ajax>
, more than often actions just return to the same view (thus, null
or void
) wherein the results are conditionally rendered by ajax.
public void save() {
// ...
}
On Windows I tried doing this
echo off > fff1.txt
and it created a file named fff1.txt with file size of 0kb
I didn't find any commands other than this that could create a empty file.
Note: You have to be in the directory you wish to create the file.
First of all, you should look gradle.properties and these values have to be true. If you cannot see them you have to write.
android.useAndroidX=true
android.enableJetifier=true
After that you can use AndroidX dependencies in your build.gradle (Module: app). Also, you have to check compileSDKVersion and targetVersion. They should be minimum 28. For example I am using 29.
So, an androidx dependency example:
implementation 'androidx.cardview:cardview:1.0.0'
However be careful because everything is not start with androidx like cardview dependency. For example, old design dependency is:
implementation 'com.android.support:design:27.1.1'
But new design dependency is:
implementation 'com.google.android.material:material:1.3.0'
RecyclerView is:
implementation 'androidx.recyclerview:recyclerview:1.1.0'
So, you have to search and read carefully. Happy code.
@canerkaseler
I am from Angular as well and trying out React, as of now, one recommended(?) way seems to be using High-Order Components:
A higher-order component (HOC) is an advanced technique in React for reusing component logic. HOCs are not part of the React API, per se. They are a pattern that emerges from React’s compositional nature.
Let's say you have input
and textarea
and like to apply the same validation logic:
const Input = (props) => (
<input type="text"
style={props.style}
onChange={props.onChange} />
)
const TextArea = (props) => (
<textarea rows="3"
style={props.style}
onChange={props.onChange} >
</textarea>
)
Then write a HOC that does validate and style wrapped component:
function withValidator(WrappedComponent) {
return class extends React.Component {
constructor(props) {
super(props)
this.validateAndStyle = this.validateAndStyle.bind(this)
this.state = {
style: {}
}
}
validateAndStyle(e) {
const value = e.target.value
const valid = value && value.length > 3 // shared logic here
const style = valid ? {} : { border: '2px solid red' }
console.log(value, valid)
this.setState({
style: style
})
}
render() {
return <WrappedComponent
onChange={this.validateAndStyle}
style={this.state.style}
{...this.props} />
}
}
}
Now those HOCs share the same validating behavior:
const InputWithValidator = withValidator(Input)
const TextAreaWithValidator = withValidator(TextArea)
render((
<div>
<InputWithValidator />
<TextAreaWithValidator />
</div>
), document.getElementById('root'));
I created a simple demo.
Edit: Another demo is using props to pass an array of functions so that you can share logic composed by multiple validating functions across HOC
s like:
<InputWithValidator validators={[validator1,validator2]} />
<TextAreaWithValidator validators={[validator1,validator2]} />
Edit2: React 16.8+ provides a new feature, Hook, another nice way to share logic.
const Input = (props) => {
const inputValidation = useInputValidation()
return (
<input type="text"
{...inputValidation} />
)
}
function useInputValidation() {
const [value, setValue] = useState('')
const [style, setStyle] = useState({})
function handleChange(e) {
const value = e.target.value
setValue(value)
const valid = value && value.length > 3 // shared logic here
const style = valid ? {} : { border: '2px solid red' }
console.log(value, valid)
setStyle(style)
}
return {
value,
style,
onChange: handleChange
}
}
https://stackblitz.com/edit/react-shared-validation-logic-using-hook?file=index.js
You need to enclose multiple conditions in braces due to operator precedence and use the bitwise and (&
) and or (|
) operators:
foo = df[(df['column1']==value) | (df['columns2'] == 'b') | (df['column3'] == 'c')]
If you use and
or or
, then pandas is likely to moan that the comparison is ambiguous. In that case, it is unclear whether we are comparing every value in a series in the condition, and what does it mean if only 1 or all but 1 match the condition. That is why you should use the bitwise operators or the numpy np.all
or np.any
to specify the matching criteria.
There is also the query method: http://pandas.pydata.org/pandas-docs/dev/generated/pandas.DataFrame.query.html
but there are some limitations mainly to do with issues where there could be ambiguity between column names and index values.
As a new user to these two software packages, I experienced the exact same problem. As was also discovered above, my solution was to use the same case letters as is in the Repository path.
Here's a tip that I find helpful: In VisualSVN, you can right click on the path, then click "Copy URL to Clipboard" for pasting in Tortoise to be sure that the path is the identical case.
jQuery Core doesn't have anything special, but you can read on jQuery Mobile Events page about different touch events, which also work on other than iOS devices as well.
They are:
Notice also, that during scroll events (based on touch on mobile devices) iOS devices freezes DOM manipulation while scrolling.
To run an executable in mac
1). Move to the path of the file:
cd/PATH_OF_THE_FILE
2). Run the following command to set the file's executable bit using the chmod command:
chmod +x ./NAME_OF_THE_FILE
3). Run the following command to execute the file:
./NAME_OF_THE_FILE
Once you have run these commands, going ahead you just have to run command 3, while in the files path.
To check for an empty string you could also do something as follows
if (!defined $val || $val eq '')
{
# empty
}
For me it worked when I omitted the password.
So mysqldump -u user dbname > dump.sql
The way I solved this, which is another option (if you have jQuery available), was to Define the fields in an old-school object and then extend the class with that object. I also didn't want to pepper the constructor with assignments, this appeared to be a neat solution.
function MyClassFields(){
this.createdAt = new Date();
}
MyClassFields.prototype = {
id : '',
type : '',
title : '',
createdAt : null,
};
class MyClass {
constructor() {
$.extend(this,new MyClassFields());
}
};
-- Update Following Bergi's comment.
No JQuery Version:
class SavedSearch {
constructor() {
Object.assign(this,{
id : '',
type : '',
title : '',
createdAt: new Date(),
});
}
}
You still do end up with 'fat' constructor, but at least its all in one class and assigned in one hit.
EDIT #2: I've now gone full circle and am now assigning values in the constructor, e.g.
class SavedSearch {
constructor() {
this.id = '';
this.type = '';
this.title = '';
this.createdAt = new Date();
}
}
Why? Simple really, using the above plus some JSdoc comments, PHPStorm was able to perform code completion on the properties. Assigning all the vars in one hit was nice, but the inability to code complete the properties, imo, isn't worth the (almost certainly minuscule) performance benefit.
http://sourceforge.net/projects/pywin32/files/ - 3rd .exe down
I had the same issue using the request module to proxy POST request from somewhere else and it was because I left the host property in the header (I was copying the header from the original request).
there is no need to js or jquery. to stop page reloading just specify the button type as 'button'. if you dont specify the button type, browser will set it to 'reset' or 'submit' witch cause to page reload.
<button type='button'>submit</button>
I had the same issue and took a whole day to figure out the problem. This error message by Facebook SDK is very vague. I had this problem due to openURL: method being overwritten in MyApplication. I removed the overwritten method and facebook login worked fine.
This may do the trick:
\b\p{L}*Id\b
Where \p{L}
matches any (Unicode) letter and \b
matches a word boundary.
I had the same problem. A lot of the solutions mentioned here didn't give me the whole picture, so I'll try to give you a summary of how to pack jar files from the command line.
If you want to have your .class
files in packages, add the package in the beginning of the .java
.
Test.java
package testpackage;
public class Test
{
...
}
To compile your code with your .class
files ending up with the structure given by the package name use:
javac -d . Test.java
The -d .
makes the compiler create the directory structure you want.
When packaging the .jar
file, you need to instruct the jar routine on how to pack it. Here we use the option set cvfeP
. This is to keep the package structure (option P
), specify the entry point so that the manifest file contains meaningful information (option e
). Option f
lets you specify the file name, option c
creates an archive and option v
sets the output to verbose. The important things to note here are P
and e
.
Then comes the name of the jar we want test.jar
.
Then comes the entry point .
And then comes -C . <packagename>/
to get the class files from that folder, preserving the folder structure.
jar cvfeP test.jar testpackage.Test -C . testpackage/
Check your .jar
file in a zip program. It should have the following structure
test.jar
META-INF
| MANIFEST.MF
testpackage
| Test.class
The MANIFEST.MF should contain the following
Manifest-Version: 1.0
Created-By: <JDK Version> (Oracle Corporation)
Main-Class: testpackage.Test
If you edit your manifest by hand be sure to keep the newline at the end otherwise java doesn't recognize it.
Execute your .jar
file with
java -jar test.jar
Both
-Djavax.net.ssl.trustStore=path/to/trustStore.jks
and
System.setProperty("javax.net.ssl.trustStore", "cacerts.jks");
do the same thing and have no difference working wise. In your case you just have a typo. You have misspelled trustStore
in javax.net.ssl.trustStore.
Modified this to be a lot more accurate. It will convert dates to a 'YYYY-MM-DD' format, ignoring HH:MM:SS, and takes an optional endDate or uses the current date, and doesn't care about the order of the values.
function dateDiff(startingDate, endingDate) {
var startDate = new Date(new Date(startingDate).toISOString().substr(0, 10));
if (!endingDate) {
endingDate = new Date().toISOString().substr(0, 10); // need date in YYYY-MM-DD format
}
var endDate = new Date(endingDate);
if (startDate > endDate) {
var swap = startDate;
startDate = endDate;
endDate = swap;
}
var startYear = startDate.getFullYear();
var february = (startYear % 4 === 0 && startYear % 100 !== 0) || startYear % 400 === 0 ? 29 : 28;
var daysInMonth = [31, february, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
var yearDiff = endDate.getFullYear() - startYear;
var monthDiff = endDate.getMonth() - startDate.getMonth();
if (monthDiff < 0) {
yearDiff--;
monthDiff += 12;
}
var dayDiff = endDate.getDate() - startDate.getDate();
if (dayDiff < 0) {
if (monthDiff > 0) {
monthDiff--;
} else {
yearDiff--;
monthDiff = 11;
}
dayDiff += daysInMonth[startDate.getMonth()];
}
return yearDiff + 'Y ' + monthDiff + 'M ' + dayDiff + 'D';
}
Then you can use it like this:
// based on a current date of 2019-05-10
dateDiff('2019-05-10'); // 0Y 0M 0D
dateDiff('2019-05-09'); // 0Y 0M 1D
dateDiff('2018-05-09'); // 1Y 0M 1D
dateDiff('2018-05-18'); // 0Y 11M 23D
dateDiff('2019-01-09'); // 0Y 4M 1D
dateDiff('2019-02-10'); // 0Y 3M 0D
dateDiff('2019-02-11'); // 0Y 2M 27D
dateDiff('2016-02-11'); // 3Y 2M 28D - leap year
dateDiff('1972-11-30'); // 46Y 5M 10D
dateDiff('2016-02-11', '2017-02-11'); // 1Y 0M 0D
dateDiff('2016-02-11', '2016-03-10'); // 0Y 0M 28D - leap year
dateDiff('2100-02-11', '2100-03-10'); // 0Y 0M 27D - not a leap year
dateDiff('2017-02-11', '2016-02-11'); // 1Y 0M 0D - swapped dates to return correct result
dateDiff(new Date() - 1000 * 60 * 60 * 24); // 0Y 0M 1D
Older less accurate but simpler version
@RajeevPNadig's answer was what I was looking for, but his code returns incorrect values as written. This is not very accurate because it assumes that the sequence of dates from 1 January 1970 is the same as any other sequence of the same number of days. E.g. it calculates the difference from 1 July to 1 September (62 days) as 0Y 2M 3D and not 0Y 2M 0D because 1 Jan 1970 plus 62 days is 3 March.
// startDate must be a date string
function dateAgo(date) {
var startDate = new Date(date);
var diffDate = new Date(new Date() - startDate);
return ((diffDate.toISOString().slice(0, 4) - 1970) + "Y " +
diffDate.getMonth() + "M " + (diffDate.getDate()-1) + "D");
}
Then you can use it like this:
// based on a current date of 2018-03-09
dateAgo('1972-11-30'); // "45Y 3M 9D"
dateAgo('2017-03-09'); // "1Y 0M 0D"
dateAgo('2018-01-09'); // "0Y 2M 0D"
dateAgo('2018-02-09'); // "0Y 0M 28D" -- a little odd, but not wrong
dateAgo('2018-02-01'); // "0Y 1M 5D" -- definitely "feels" wrong
dateAgo('2018-03-09'); // "0Y 0M 0D"
If your use case is just date strings, then this works okay if you just want a quick and dirty 4 liner.
@echo off
setlocal enableextensions
set count=0
for %%x in (*.txt) do set /a count+=1
echo %count%
endlocal
pause
This is the best.... your variable is: %count%
NOTE: you can change (*.txt
) to any other file extension to count other files.....
From Interface Builder (Storyboard/XIB):
Programmatically:
SWift 4
Using label extension
extension UILabel {
// Pass value for any one of both parameters and see result
func setLineSpacing(lineSpacing: CGFloat = 0.0, lineHeightMultiple: CGFloat = 0.0) {
guard let labelText = self.text else { return }
let paragraphStyle = NSMutableParagraphStyle()
paragraphStyle.lineSpacing = lineSpacing
paragraphStyle.lineHeightMultiple = lineHeightMultiple
let attributedString:NSMutableAttributedString
if let labelattributedText = self.attributedText {
attributedString = NSMutableAttributedString(attributedString: labelattributedText)
} else {
attributedString = NSMutableAttributedString(string: labelText)
}
// Line spacing attribute
attributedString.addAttribute(NSAttributedStringKey.paragraphStyle, value:paragraphStyle, range:NSMakeRange(0, attributedString.length))
self.attributedText = attributedString
}
}
Now call extension function
let label = UILabel()
let stringValue = "How to\ncontrol\nthe\nline spacing\nin UILabel"
// Pass value for any one argument - lineSpacing or lineHeightMultiple
label.setLineSpacing(lineSpacing: 2.0) . // try values 1.0 to 5.0
// or try lineHeightMultiple
//label.setLineSpacing(lineHeightMultiple = 2.0) // try values 0.5 to 2.0
Or using label instance (Just copy & execute this code to see result)
let label = UILabel()
let stringValue = "How to\ncontrol\nthe\nline spacing\nin UILabel"
let attrString = NSMutableAttributedString(string: stringValue)
var style = NSMutableParagraphStyle()
style.lineSpacing = 24 // change line spacing between paragraph like 36 or 48
style.minimumLineHeight = 20 // change line spacing between each line like 30 or 40
// Line spacing attribute
attrString.addAttribute(NSAttributedStringKey.paragraphStyle, value: style, range: NSRange(location: 0, length: stringValue.characters.count))
// Character spacing attribute
attrString.addAttribute(NSAttributedStringKey.kern, value: 2, range: NSMakeRange(0, attrString.length))
label.attributedText = attrString
Swift 3
let label = UILabel()
let stringValue = "How to\ncontrol\nthe\nline spacing\nin UILabel"
let attrString = NSMutableAttributedString(string: stringValue)
var style = NSMutableParagraphStyle()
style.lineSpacing = 24 // change line spacing between paragraph like 36 or 48
style.minimumLineHeight = 20 // change line spacing between each line like 30 or 40
attrString.addAttribute(NSParagraphStyleAttributeName, value: style, range: NSRange(location: 0, length: stringValue.characters.count))
label.attributedText = attrString
In mdcharm it is like this:
* [Descripción](#descripcion)
* [Funcionamiento](#funcionamiento)
* [Instalación](#instalacion)
* [Configuración](#configuracion)
### Descripción {#descripcion}
### Funcionamiento {#funcionamiento}
### Instalación {#instalacion}
### Configuración {#configuracion}
<div class="content scrollable" ref="msgContainer">
<!-- content -->
</div>
data() {
return {
count: 5
};
},
watch: {
count: function() {
this.$nextTick(function() {
var container = this.$refs.msgContainer;
container.scrollTop = container.scrollHeight + 120;
});
}
}
.scrollable {
overflow: hidden;
overflow-y: scroll;
height: calc(100vh - 20px);
}
Another way is by making it readonly:
<input type="text" id="txtDis" readonly />
I don't think adb pull handles wildcards for multiple files. I ran into the same problem and did this by moving the files to a folder and then pulling the folder.
I found a link doing the same thing. Try following these steps.
This occurs when you specify the different name for repository table name and database table name. Please check your table name with database and repository.
Without time than try like this:
TimeSpan ts = new TimeSpan(23, 59, 59);
toDate = toDate.Add(ts);
List<AuditLog> resultLogs =
_dbContext.AuditLogs
.Where(al => al.Log_Date >= fromDate && al.Log_Date <= toDate)
.ToList();
return resultLogs;
You can make <button>
tag to do action like this:
<a href="http://www.google.com/">
<button>Visit Google</button>
</a>
or:
<a href="http://www.google.com/">
<input type="button" value="Visit Google" />
</a>
It's simple and no javascript required!
NOTE:
This approach is not valid from HTML structure. But, it works on many modern browser. See following reference :
if you are trying to check that in spring frame work then isEmpty method in objectUtils class helps,
public static boolean isEmpty(@Nullable Object[] array) {
return (array == null || array.length == 0);
}
This is pretty simple here is an example
Add your command code here like:
if (cmd === `!dm`) {
let dUser =
message.guild.member(message.mentions.users.first()) ||
message.guild.members.get(args[0]);
if (!dUser) return message.channel.send("Can't find user!");
if (!message.member.hasPermission('ADMINISTRATOR'))
return message.reply("You can't you that command!");
let dMessage = args.join(' ').slice(22);
if (dMessage.length < 1) return message.reply('You must supply a message!');
dUser.send(`${dUser} A moderator from WP Coding Club sent you: ${dMessage}`);
message.author.send(
`${message.author} You have sent your message to ${dUser}`
);
}
Answers above are shown how to remove an array and here is how to pull an object from an array.
Reference: https://docs.mongodb.com/manual/reference/operator/update/pull/
db.survey.update( // select your doc in moongo
{ }, // your query, usually match by _id
{ $pull: { results: { $elemMatch: { score: 8 , item: "B" } } } }, // item(s) to match from array you want to pull/remove
{ multi: true } // set this to true if you want to remove multiple elements.
)
I think you set the marquee width related to 5 images total width. It works fine
ex: <marquee style="width:700px"></marquee>
Suppose: SqlConnection connectionObj = new SqlConnection()
for : connectionObj.ConnectionString -> use server name : (localdb)\\MSSQLLocalDB.
Note: Double back slash
for : App.config -> use server name : (localdb)\MSSQLLocalDB
Note: Single back slash
This code block solve my problem,
<script type="text/javascript">_x000D_
$(window).bind("load", function () {_x000D_
// Code here_x000D_
});_x000D_
</script>
_x000D_
You can also use Bash on Ubuntu on Windows
directly. E.g.,
bash -c "ssh -t user@computer 'cd /; sudo my-command'"
Per Martin Prikryl's comment below:
The -t enables terminal emulation. Whether you need the terminal emulation for sudo depends on configuration (and by default you do no need it, while many distributions override the default). On the contrary, many other commands need terminal emulation.
If you want to debug your flask app then just go to the folder where flask app is. Don't forget to activate your virtual environment and paste the lines in the console change "mainfilename" to flask main file.
export FLASK_APP="mainfilename.py"
export FLASK_DEBUG=1
python -m flask run --host=0.0.0.0
After you enable your debugger for flask app almost every error will be printed on the console or on the browser window. If you want to figure out what's happening, you can use simple print statements or you can also use console.log() for javascript code.
jQuery has the following signature for the .on()
method: .on( events [, selector ] [, data ], handler )
Events could be anyone of the ones listed on this reference:
https://developer.mozilla.org/en-US/docs/Web/Events
Though, they are not all supported by every browser.
Mozilla states the following about the input event:
The DOM input event is fired synchronously when the value of an or element is changed. Additionally, it fires on contenteditable editors when its contents are changed.
I did a macro __FILENAME__
that avoids cutting full path each time. The issue is to hold the resulting file name in a cpp-local variable.
It can be easily done by defining a static global variable in .h file. This definition gives separate and independent variables in each .cpp file that includes the .h. In order to be a multithreading-proof it worth to make the variable(s) also thread local (TLS).
One variable stores the File Name (shrunk). Another holds the non-cut value that __FILE__
gave. The h file:
static __declspec( thread ) const char* fileAndThreadLocal_strFilePath = NULL;
static __declspec( thread ) const char* fileAndThreadLocal_strFileName = NULL;
The macro itself calls method with all the logic:
#define __FILENAME__ \
GetSourceFileName(__FILE__, fileAndThreadLocal_strFilePath, fileAndThreadLocal_strFileName)
And the function is implemented this way:
const char* GetSourceFileName(const char* strFilePath,
const char*& rstrFilePathHolder,
const char*& rstrFileNameHolder)
{
if(strFilePath != rstrFilePathHolder)
{
//
// This if works in 2 cases:
// - when first time called in the cpp (ordinary case) or
// - when the macro __FILENAME__ is used in both h and cpp files
// and so the method is consequentially called
// once with strFilePath == "UserPath/HeaderFileThatUsesMyMACRO.h" and
// once with strFilePath == "UserPath/CPPFileThatUsesMyMACRO.cpp"
//
rstrFileNameHolder = removePath(strFilePath);
rstrFilePathHolder = strFilePath;
}
return rstrFileNameHolder;
}
The removePath() can be implemented in different ways, but the fast and simple seems to be with strrchr:
const char* removePath(const char* path)
{
const char* pDelimeter = strrchr (path, '\\');
if (pDelimeter)
path = pDelimeter+1;
pDelimeter = strrchr (path, '/');
if (pDelimeter)
path = pDelimeter+1;
return path;
}
You can use a C preprocessor (like mcpp) and rig it into your .csproj file. Then you chnage "build action" on your source file from Compile to Preprocess or whatever you call it. Just add BeforBuild to your .csproj like this:
<Target Name="BeforeBuild" Inputs="@(Preprocess)" Outputs="@(Preprocess->'%(Filename)_P.cs')">
<Exec Command="..\Bin\cpp.exe @(Preprocess) -P -o %(RelativeDir)%(Filename)_P.cs" />
<CreateItem Include="@(Preprocess->'%(RelativeDir)%(Filename)_P.cs')">
<Output TaskParameter="Include" ItemName="Compile" />
</CreateItem>
You may have to manually change Compile to Preprocess on at least one file (in a text editor) - then the "Preprocess" option should be available for selection in Visual Studio.
I know that macros are heavily overused and misused but removing them completely is equally bad if not worse. A classic example of macro usage would be NotifyPropertyChanged. Every programmer who had to rewrite this code by hand thousands of times knows how painful it is without macros.
Just for the fun of it:
CURDATE() = DATE(NOW())
Or
NOW() = CONCAT(CURDATE(), ' ', CURTIME())
It is similar to x = (x >> 1)
.
(operand1)(operator)=(operand2) implies(=>) (operand1)=(operand1)(operator)(operand2)
It shifts the binary value of x by one to the right.
E.g.
int x=3; // binary form (011)
x = x >> 1; // zero shifted in from the left, 1 shifted out to the right:
// x=1, binary form (001)
Let's polyfill:
if(!AbortController){
class AbortController {
constructor() {
this.aborted = false;
this.signal = this.signal.bind(this);
}
signal(abortFn, scope) {
if (this.aborted) {
abortFn.apply(scope, { name: 'AbortError' });
this.aborted = false;
} else {
this.abortFn = abortFn.bind(scope);
}
}
abort() {
if (this.abortFn) {
this.abortFn({ reason: 'canceled' });
this.aborted = false;
} else {
this.aborted = true;
}
}
}
const originalFetch = window.fetch;
const customFetch = (url, options) => {
const { signal } = options || {};
return new Promise((resolve, reject) => {
if (signal) {
signal(reject, this);
}
originalFetch(url, options)
.then(resolve)
.catch(reject);
});
};
window.fetch = customFetch;
}
Please have in mind that the code is not tested! Let me know if you have tested it and something didn't work. It may give you warnings that you try to overwrite the 'fetch' function from the JavaScript official library.
you have to create an entry inside res/menu,
override onCreateOptionsMenu
and inflate it
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.yourentry, menu);
return true;
}
an entry for the menu could be:
<menu xmlns:android="http://schemas.android.com/apk/res/android" >
<item
android:id="@+id/action_cart"
android:icon="@drawable/cart"
android:orderInCategory="100"
android:showAsAction="always"/>
</menu>
So let's say after getMasterData servlet will response.sendRedirect to to test.jsp.
In test.jsp
Create a javascript
<script type="text/javascript">
function alertName(){
alert("Form has been submitted");
}
</script>
and than at the bottom
<script type="text/javascript"> window.onload = alertName; </script>
Note:im not sure how to type the code in stackoverflow!. Edit: I just learned how to
Edit 2: TO the question:This works perfectly. Another question. How would I get rid of the initial alert when I first start up the JSP? "Form has been submitted" is present the second I execute. It shows up after the load is done to which is perfect.
To do that i would highly recommendation to use session!
So what you want to do is in your servlet:
session.setAttribute("getAlert", "Yes");//Just initialize a random variable.
response.sendRedirect(test.jsp);
than in the test.jsp
<%
session.setMaxInactiveInterval(2);
%>
<script type="text/javascript">
var Msg ='<%=session.getAttribute("getAlert")%>';
if (Msg != "null") {
function alertName(){
alert("Form has been submitted");
}
}
</script>
and than at the bottom
<script type="text/javascript"> window.onload = alertName; </script>
So everytime you submit that form a session will be pass on! If session is not null the function will run!
I've used Francesco Balena's HashTable class several times in the past when a Collection or Dictionary wasn't a perfect fit and i just needed a HashTable.
I think it would be a lot more productive to use a TextWriter
, in this case a StreamWriter to write to the MemoryStream. After that, as other have said, you need to "rewind" the MemoryStream using something like stringAsStream.Position = 0L;
.
stringAsStream = new MemoryStream();
// create stream writer with UTF-16 (Unicode) encoding to write to the memory stream
using(StreamWriter sWriter = new StreamWriter(stringAsStream, UnicodeEncoding.Unicode))
{
sWriter.Write("Lorem ipsum.");
}
stringAsStream.Position = 0L; // rewind
Note that:
StreamWriter defaults to using an instance of UTF8Encoding unless specified otherwise. This instance of UTF8Encoding is constructed without a byte order mark (BOM)
Also, you don't have to create a new UnicodeEncoding()
usually, since there's already one as a static member of the class for you to use in convenient utf-8, utf-16, and utf-32 flavors.
And then, finally (as others have said) you're trying to convert the byte
s directly to char
s, which they are not. If I had a memory stream and knew it was a string, I'd use a TextReader
to get the string back from the bytes. It seems "dangerous" to me to mess around with the raw bytes.
Essentially, an operating system's windowing system exposes some API calls that you can perform to do jobs like create a window, or put a button on the window. Basically, you get a suite of header files and you can call functions in those imported libraries, just like you'd do with stdlib and printf
.
Each operating system comes with its own GUI toolkit, suite of header files, and API calls, and their own way of doing things. There are also cross platform toolkits like GTK, Qt, and wxWidgets that help you build programs that work anywhere. They achieve this by having the same API calls on each platform, but a different implementation for those API functions that call down to the native OS API calls.
One thing they'll all have in common, which will be different from a CLI program, is something called an event loop. The basic idea there is somewhat complicated, and difficult to compress, but in essence it means that not a hell of a lot is going in in your main class/main function, except:
There are plenty of resources about event based programming. If you have any experience with JavaScript, it's the same basic idea, except that you, the scripter have no access or control over the event loop itself, or what events there are, your only job is to write and register handlers.
You should keep in mind that GUI programming is incredibly complicated and difficult, in general. If you have the option, it's actually much easier to just integrate an embedded webserver into your program and have an HTML/web based interface. The one exception that I've encountered is Apple's Cocoa+Xcode +interface builder + tutorials that make it easily the most approachable environment for people new to GUI programming that I've seen.
NULL == NULL -> false (at least in DBMSs)
So you wouldn't be able to retrieve any relationships using a NULL value even with additional columns with real values.
If you want to navigate to Controller created Programmatically, then do this:
let newViewController = NewViewController()
self.navigationController?.pushViewController(newViewController, animated: true)
If you want to navigate to Controller on StoryBoard with Identifier "newViewController", then do this:
let storyBoard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
let newViewController = storyBoard.instantiateViewController(withIdentifier: "newViewController") as! NewViewController
self.present(newViewController, animated: true, completion: nil)
Try to use
<xsl:text> </xsl:text>
But it depends on XSLT processor you are using: the XSLT spec does not require XSLT processors to convert it into "
".
You can also do this -
var handle = Activator.CreateInstance("AssemblyName",
"Full name of the class including the namespace and class name");
var obj = handle.Unwrap();
this will also work, if you like
xcopy C:\Test\Log "c:\Test\Backup-%date:~4,2%-%date:~7,2%-%date:~10,4%_%time:~0,2%%time:~3,2%" /s /i
del C:\Test\Log
was implemented that in service-now platform. No need to use other library - makepdf have all you need!
that my html part (include preloder gif):
<div class="pdf-preview" ng-init="generatePDF(true)">
<object data="{{c.content}}" type="application/pdf" style="width:58vh;height:88vh;" ng-if="c.content" ></object>
<div ng-if="!c.content">
<img src="https://support.lenovo.com/esv4/images/loading.gif" width="50" height="50">
</div>
</div>
this is client script (js part)
$scope.generatePDF = function (preview) {
docDefinition = {} //you rootine to generate pdf content
//...
if (preview) {
pdfMake.createPdf(docDefinition).getDataUrl(function(dataURL) {
c.content = dataURL;
});
}
}
So on page load I fire init function that generate pdf content and if required preview (set as true) result will be assigned to c.content variable. On html side object will be not shown until c.content will got a value, so that will show loading gif.
The cause of this problem could be a property setting of the database (Sql2008R2 with .NET4).
To display COLLLATION, use the Sql Server Mgmt Studio.
To change COLLATION, (still) use the Sql Server Mgmt Studio.
Double check if you have set and initial value for int and decimal values to be printed.
This sample is printing an empty line
declare @Number INT
print 'The number is : ' + CONVERT(VARCHAR, @Number)
And this sample is printing -> The number is : 1
declare @Number INT = 1
print 'The number is : ' + CONVERT(VARCHAR, @Number)
On linux you can check epiphany-browser, resizes the windows you'll get same bugs as in ios. Both browsers uses Webkit.
Ubuntu/Mint:
sudo apt install epiphany-browser
Others have mentioned the architecture differences (little - big endian).
I read the problem that since the memory for the variables is shared, then by writing to one, the others change and, depending on their type, the value could be meaningless.
eg. union{ float f; int i; } x;
Writing to x.i would be meaningless if you then read from x.f - unless that is what you intended in order to look at the sign, exponent or mantissa components of the float.
I think there is also an issue of alignment: If some variables must be word aligned then you might not get the expected result.
eg. union{ char c[4]; int i; } x;
If, hypothetically, on some machine a char had to be word aligned then c[0] and c[1] would share storage with i but not c[2] and c[3].
The T
doesn't really stand for anything. It is just the separator that the ISO 8601 combined date-time format requires. You can read it as an abbreviation for Time.
The Z
stands for the Zero timezone, as it is offset by 0 from the Coordinated Universal Time (UTC).
Both characters are just static letters in the format, which is why they are not documented by the datetime.strftime()
method. You could have used Q
or M
or Monty Python
and the method would have returned them unchanged as well; the method only looks for patterns starting with %
to replace those with information from the datetime
object.
Use this for your custom size:
driver.manage().window().setSize(new Dimension(1024,768));
you can change your dimensions as per your requirements.
Changing the ng-src
value is actually very simple. Like this:
<html ng-app>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.0.6/angular.min.js"></script>
</head>
<body>
<img ng-src="{{img_url}}">
<button ng-click="img_url = 'https://farm4.staticflickr.com/3261/2801924702_ffbdeda927_d.jpg'">Click</button>
</body>
</html>
Here is a jsFiddle of a working example: http://jsfiddle.net/Hx7B9/2/
Path.GetDirectoryName(Application.ExecutablePath)
eg. value:
C:\Projects\ConsoleApplication1\bin\Debug
You have to add following in header:
<script type="text/javascript">
function fixform() {
if (opener.document.getElementById("aspnetForm").target != "_blank") return;
opener.document.getElementById("aspnetForm").target = "";
opener.document.getElementById("aspnetForm").action = opener.location.href;
}
</script>
Then call fixform()
in load your page.
First, make sure you have libcurl
(see: http://curl.haxx.se) installed. Then make sure your copy of PHP has been compiled with the --with-curl[=DIR]
flag. For more info see:
If XAMPP comes pre-compiled with cURL you may just need to enable the extension in your php.ini file (usually by removing a semicolon at the start of the line which includes the extension).
Here's the simplest (but not prettiest) solution: make a table around the whole thing. There are obviously scaling issues, and this is why I give my example with the HTML so that you can modify the image size easily. This worked for me.
| <img src="" alt="" style="width: 400px;"/> |
| My Caption |
My answer was inspired by vijay's answer, but is a shorter, more general solution that I thought I'd share for anyone it might help.
(function () {
var minutes = true; // change to false if you'd rather use seconds
var interval = minutes ? 60000 : 1000;
var IDLE_TIMEOUT = 3; // 3 minutes in this example
var idleCounter = 0;
document.onmousemove = document.onkeypress = function () {
idleCounter = 0;
};
window.setInterval(function () {
if (++idleCounter >= IDLE_TIMEOUT) {
window.location.reload(); // or whatever you want to do
}
}, interval);
}());
As it currently stands, this code will execute immediately and reload your current page after 3 minutes of no mouse movement or key presses.
This utilizes plain vanilla JavaScript and an immediately-invoked function expression to handle idle timeouts in a clean and self-contained manner.
SYSDATETIME()
and SYSUTCDATETIME()
are the DateTime2 equivalents of
which return a DateTime.
DateTime2 is now the preferred method for storing the date and time in SQL Server 2008+. See the following StackOverflow Post.
This is called ACF(Automatic Content Filter) in ckeditor.It remove all unnessary tag's What we are using in text content.Using this command in your config.js file should be turn off this ACK.
config.allowedContent = true;
http://www.connectionstrings.com is a site where you can find a lot of connection strings. All that you need to do is copy-paste and modify it to suit your needs. It is sure to have all the connection strings for all of your needs.
I am using Windows 10 and overcame this issue by running the pip install mysql-connector
command in Windows PowerShell rather than the Command Prompt.
the mysqli_query
excepts 2 parameters , first variable is mysqli_connect
equivalent variable , second one is the query you have provided
$name1 = mysqli_connect(localhost,tdoylex1_dork,dorkk,tdoylex1_dork);
$name2 = mysqli_query($name1,"SELECT name FROM users ORDER BY RAND() LIMIT 1");
dbo.tableA AS A INNER JOIN dbo.TableB AS B
ON A.common = B.common INNER JOIN TableC C
ON B.common = C.common
From the core javascript reference
===
Returnstrue
if the operands are strictly equal (see above) with no type conversion.
OUTDATED: Many modern browsers now have first-class support for crypto operations. See Vitaly Zdanevich's answer below.
The Stanford JS Crypto Library contains an implementation of SHA-256. While crypto in JS isn't really as well-vetted an endeavor as other implementation platforms, this one is at least partially developed by, and to a certain extent sponsored by, Dan Boneh, who is a well-established and trusted name in cryptography, and means that the project has some oversight by someone who actually knows what he's doing. The project is also supported by the NSF.
It's worth pointing out, however...
... that if you hash the password client-side before submitting it, then the hash is the password, and the original password becomes irrelevant. An attacker needs only to intercept the hash in order to impersonate the user, and if that hash is stored unmodified on the server, then the server is storing the true password (the hash) in plain-text.
So your security is now worse because you decided add your own improvements to what was previously a trusted scheme.
People use it because they're inherently lazy when building dynamic SQL queries. If you start with a "where 1 = 1"
then all your extra clauses just start with "and"
and you don't have to figure out.
Not that there's anything wrong with being inherently lazy. I've seen doubly-linked lists where an "empty" list consists of two sentinel nodes and you start processing at the first->next
up until last->prev
inclusive.
This actually removed all the special handling code for deleting first
and last
nodes. In this set-up, every node was a middle node since you weren't able to delete first
or last
. Two nodes were wasted but the code was simpler and (ever so slightly) faster.
The only other place I've ever seen the "1 = 1" construct is in BIRT. Reports often use positional parameters and are modified with Javascript to allow all values. So the query:
select * from tbl where col = ?
when the user selects "*"
for the parameter being used for col
is modified to read:
select * from tbl where ((col = ?) or (1 = 1))
This allows the new query to be used without fiddling around with the positional parameter details. There's still exactly one such parameter. Any decent DBMS (e.g., DB2/z) will optimize that query to basically remove the clause entirely before trying to construct an execution plan, so there's no trade-off.
Shell is an interface between a user and OS to access to an operating system's services. It can be either GUI or CLI (Command Line interface).
sh (Bourne shell) is a shell command-line interpreter, for Unix/Unix-like operating systems. It provides some built-in commands. In scripting language we denote interpreter as #!/bin/sh
. It was one most widely supported by other shells like bash (free/open), kash (not free).
Bash (Bourne again shell) is a shell replacement for the Bourne shell. Bash is superset of sh. Bash supports sh. POSIX is a set of standards defining how POSIX-compliant systems should work. Bash is not actually a POSIX compliant shell. In a scripting language we denote the interpreter as #!/bin/bash
.
Analogy:
I found that ev.stopPropagation();
worked for me.
This is a late post, but can still be effective for people in future.
Spring provides a utility BeanUtils.copyProperties(srcObj, tarObj)
which copies values from source object to target object when the names of the member variables of both classes are the same.
If there is a date conversion, (eg, String to Date) 'null' would be copied to the target object. We can then, explicitly set the values of the date as required.
The BeanUtils from Apache Common
throws an error when there is a mismatch of data-types (esp. conversion to and from Date)
Hope this helps!
If you want the effect of a nested for loop, use:
import itertools
for i, j in itertools.product(range(x), range(y)):
# Stuff...
If you just want to loop simultaneously, use:
for i, j in zip(range(x), range(y)):
# Stuff...
Note that if x
and y
are not the same length, zip
will truncate to the shortest list. As @abarnert pointed out, if you don't want to truncate to the shortest list, you could use itertools.zip_longest
.
UPDATE
Based on the request for "a function that will read lists "t1" and "t2" and return all elements that are identical", I don't think the OP wants zip
or product
. I think they want a set
:
def equal_elements(t1, t2):
return list(set(t1).intersection(set(t2)))
# You could also do
# return list(set(t1) & set(t2))
The intersection
method of a set
will return all the elements common to it and another set (Note that if your lists contains other list
s, you might want to convert the inner list
s to tuples
first so that they are hashable; otherwise the call to set
will fail.). The list
function then turns the set back into a list.
UPDATE 2
OR, the OP might want elements that are identical in the same position in the lists. In this case, zip
would be most appropriate, and the fact that it truncates to the shortest list is what you would want (since it is impossible for there to be the same element at index 9 when one of the lists is only 5 elements long). If that is what you want, go with this:
def equal_elements(t1, t2):
return [x for x, y in zip(t1, t2) if x == y]
This will return a list containing only the elements that are the same and in the same position in the lists.
It sounds like you're looking for applicationHost.config
, which is located in C:\Windows\System32\inetsrv\config
.
Yes, it's an XML file, and yes, editing the file by hand will affect the IIS config after a restart. You can think of IIS Manager as a GUI front-end for editing applicationHost.config
and web.config
.
EDIT:
So which am I supposed to use? The proper 4 letter extension suggested by the creator, or the 3 letter extension found in the wild west of the internet?
This question could be:
A request for advice; or
A natural expression of that particular emotion which is experienced, while one is observing that some official recommendation is being disregarded—prominently, or even predominantly.
People differ in their predilection for following:
Official advice; or
The preponderance of practice.
Of course, I am unlikely to influence you, regarding which of these two paths you prefer to take!
In what follows (and, in the spirit of science), I merely make an hypothesis, about what (merely as a matter of fact) led the majority of people to use the 3-letter extension. And, I focus on efficient causes.
By this, I do not intend moral exhortation. As you may recall, the fact that something is, does not imply that it should be.
Whatever your personal inclination, be it to follow one path or the other, I do not object.
(End of edit.)
The suggestion, that this preference (in real life usage) was caused by a 8.3 character DOS-ish limitation, IMO is a red herring (erroneous and misleading).
As of August, 2016, the Google search counts for YML and YAML were approximately 6,000,000 and 4,100,000 (to two digits of precision). Furthermore, the "YAML" count was unfairly high because it included mention of the language by name, beyond its use as an extension.
As of July, 2018, the Google's search counts for YML and YAML were approximately 8,100,000 and 4,100,000 (again, to two digits of precision). So, in the last two years, YML has essentially doubled in popularity, but YAML has stayed the same.
Another cultural measure is websites which attempt to explain file extensions. For example, on the FilExt website (as of July, 2018), the page for YAML results in: "Ooops! The FILEXT.com database does not have any information on file extension .YAML."
Whereas, it has an entry for YML, which gives: "YAML...uses a text file and organizes it into a format which is Human-readable. 'database.yml' is a typical example when YAML is used by Ruby on Rails to connect to a database."
As of November, 2014, Wikipedia's article on extension YML still stated that ".yml" is "the file extension for the YAML file format" (emphasis added). Its YAML article lists both extensions, without expressing a preference.
The extension ".yml" is sufficiently clear, is more brief (thus easier to type and recognize), and is much more common.
Of course, both of these extensions could be viewed as abbreviations of a long, possible extension, ".yamlaintmarkuplanguage". But programmers (and users) don't want to type all of that!
Instead, we programmers (and users) want to type as little as possible, and still yet be unambiguous and clear. And we want to see what kind of file it is, as quickly as possible, without reading a longer word. Typing just how many characters accomplishes both of these goals? Isn't the answer three (3)? In other words, YML?
Wikipedia's Category:Filename_extensions page lists entries for .a, .o and .Z. Somehow, it missed .c and .h (used by the C language). These example single-letter extensions help us to see that extensions should be as long as necessary, but no longer (to half-quote Albert Einstein).
Instead, notice that, in general, few extensions start with "Y". Commonly, on the other hand, the letter X is used for a great variety of meanings including "cross," "extensible," "extreme," "variable," etc. (e.g. in XML). So starting with "Y" already conveys much information (in terms of information theory), whereas starting with "X" does not.
Linguistically speaking, therefore, the acronym "XML" has (in a way) only two informative letters ("M" and "L"). "YML", instead, has three informative letters ("M", "L" and "Y"). Indeed, the existing set of acronyms beginning with Y seems extremely small. By implication, this is why a four letter YAML file extension feels greatly overspecified.
Perhaps this is why we see in practice that the "linguistic" pressure (in natural use) to lengthen the abbreviation in question to four (4) characters is weak, and the "linguistic" pressure to shorten this abbreviation to three (3) characters is strong.
Purely as a result, probably, of these factors (and not as an official endorsement), I would note that the YAML.org website's latest news item (from November, 2011) is all about a project written in JavaScript, JS-YAML, which, itself, internally prefers to use the extension ".yml".
The above-mentioned factors may have been the main ones; nevertheless, all the factors (known or unknown) have resulted in the abbreviated, three (3) character extension becoming the one in predominant use for YAML—despite the inventors' preference.
".YML" seems to be the de facto standard. Yet the same inventors were perceptive and correct, about the world's need for a human-readable data language. And we should thank them for providing it.
For me, I started the app from within windows explorer (by double clicking on it). Then it crashed immediately.
I then opened Event Viewer
of windows and viewed Application
and it displayed full stacktrace of error. The stacktrace showed relation with Bitmap or images. It was then turned out to be due to app icon not found
I know this is a Java question, but if you're using Kotlin you can do this quite nicely:
val uri = request.run {
if (queryString.isNullOrBlank()) requestURI else "$requestURI?$queryString"
}
try this:
import datetime
from datetime import datetime as dt
today_date = datetime.date.today()
date_time = dt.strptime(date_time_string, '%Y-%m-%d %H:%M')
strp() doesn't exist. I think you mean strptime.
Unfortunately it seems to be a issue with MySql usage of "NOT IN" clause, the screen-shoot below shows the sub-query option returning wrong results:
mysql> show variables like '%version%';
+-------------------------+------------------------------+
| Variable_name | Value |
+-------------------------+------------------------------+
| innodb_version | 1.1.8 |
| protocol_version | 10 |
| slave_type_conversions | |
| version | 5.5.21 |
| version_comment | MySQL Community Server (GPL) |
| version_compile_machine | x86_64 |
| version_compile_os | Linux |
+-------------------------+------------------------------+
7 rows in set (0.07 sec)
mysql> select count(*) from TABLE_A where TABLE_A.Pkey not in (select distinct TABLE_B.Fkey from TABLE_B );
+----------+
| count(*) |
+----------+
| 0 |
+----------+
1 row in set (0.07 sec)
mysql> select count(*) from TABLE_A left join TABLE_B on TABLE_A.Pkey = TABLE_B.Fkey where TABLE_B.Pkey is null;
+----------+
| count(*) |
+----------+
| 139 |
+----------+
1 row in set (0.06 sec)
mysql> select count(*) from TABLE_A where NOT EXISTS (select * FROM TABLE_B WHERE TABLE_B.Fkey = TABLE_A.Pkey );
+----------+
| count(*) |
+----------+
| 139 |
+----------+
1 row in set (0.06 sec)
mysql>
Swift 4 : Combining the answers of Sulthan and Luca Torella :
extension UIColor {
convenience init(hexFromString:String, alpha:CGFloat = 1.0) {
var cString:String = hexFromString.trimmingCharacters(in: .whitespacesAndNewlines).uppercased()
var rgbValue:UInt32 = 10066329 //color #999999 if string has wrong format
if (cString.hasPrefix("#")) {
cString.remove(at: cString.startIndex)
}
if ((cString.count) == 6) {
Scanner(string: cString).scanHexInt32(&rgbValue)
}
self.init(
red: CGFloat((rgbValue & 0xFF0000) >> 16) / 255.0,
green: CGFloat((rgbValue & 0x00FF00) >> 8) / 255.0,
blue: CGFloat(rgbValue & 0x0000FF) / 255.0,
alpha: alpha
)
}
}
Usage examples:
let myColor = UIColor(hexFromString: "4F9BF5")
let myColor = UIColor(hexFromString: "#4F9BF5")
let myColor = UIColor(hexFromString: "#4F9BF5", alpha: 0.5)
f = open('test.txt','r')
for line in f.xreadlines():
print line
f.close()
If accuracy is an issue here you can create random numbers with a finer graduation by randomizing the significant bits. Let's assume we want to have a double between 0.0 and 1000.0.
On MSVC (12 / Win32) RAND_MAX is 32767 for example.
If you use the common rand()/RAND_MAX
scheme your gaps will be as large as
1.0 / 32767.0 * ( 1000.0 - 0.0) = 0.0305 ...
In case of IEE 754 double variables (53 significant bits) and 53 bit randomization the smallest possible randomization gap for the 0 to 1000 problem will be
2^-53 * (1000.0 - 0.0) = 1.110e-13
and therefore significantly lower.
The downside is that 4 rand() calls will be needed to obtain the randomized integral number (assuming a 15 bit RNG).
double random_range (double const range_min, double const range_max)
{
static unsigned long long const mant_mask53(9007199254740991);
static double const i_to_d53(1.0/9007199254740992.0);
unsigned long long const r( (unsigned long long(rand()) | (unsigned long long(rand()) << 15) | (unsigned long long(rand()) << 30) | (unsigned long long(rand()) << 45)) & mant_mask53 );
return range_min + i_to_d53*double(r)*(range_max-range_min);
}
If the number of bits for the mantissa or the RNG is unknown the respective values need to be obtained within the function.
#include <limits>
using namespace std;
double random_range_p (double const range_min, double const range_max)
{
static unsigned long long const num_mant_bits(numeric_limits<double>::digits), ll_one(1),
mant_limit(ll_one << num_mant_bits);
static double const i_to_d(1.0/double(mant_limit));
static size_t num_rand_calls, rng_bits;
if (num_rand_calls == 0 || rng_bits == 0)
{
size_t const rand_max(RAND_MAX), one(1);
while (rand_max > (one << rng_bits))
{
++rng_bits;
}
num_rand_calls = size_t(ceil(double(num_mant_bits)/double(rng_bits)));
}
unsigned long long r(0);
for (size_t i=0; i<num_rand_calls; ++i)
{
r |= (unsigned long long(rand()) << (i*rng_bits));
}
r = r & (mant_limit-ll_one);
return range_min + i_to_d*double(r)*(range_max-range_min);
}
Note: I don't know whether the number of bits for unsigned long long (64 bit) is greater than the number of double mantissa bits (53 bit for IEE 754) on all platforms or not.
It would probably be "smart" to include a check like if (sizeof(unsigned long long)*8 > num_mant_bits) ...
if this is not the case.
I have edited for you:
function getHost($Address) {
$parseUrl = parse_url(trim($Address));
$host = trim($parseUrl['host'] ? $parseUrl['host'] : array_shift(explode('/', $parseUrl['path'], 2)));
$parts = explode( '.', $host );
$num_parts = count($parts);
if ($parts[0] == "www") {
for ($i=1; $i < $num_parts; $i++) {
$h .= $parts[$i] . '.';
}
}else {
for ($i=0; $i < $num_parts; $i++) {
$h .= $parts[$i] . '.';
}
}
return substr($h,0,-1);
}
All type url (www.domain.ltd, sub1.subn.domain.ltd will result to : domain.ltd.
You need to put the data before render
Should be like this:
var data = [
{author: "Pete Hunt", text: "This is one comment"},
{author: "Jordan Walke", text: "This is *another* comment"}
];
React.render(
<CommentBox data={data}/>,
document.getElementById('content')
);
Instead of this:
React.render(
<CommentBox data={data}/>,
document.getElementById('content')
);
var data = [
{author: "Pete Hunt", text: "This is one comment"},
{author: "Jordan Walke", text: "This is *another* comment"}
];
0 */6 * * * command
This will be the perfect way to say 6 hours a day.
Your command puts in for six minutes!
Either remove one } from end of responseText;}}
or from the end of the line
string str="super exemple of string key : text I want to keep - end of my string";
int startIndex = str.IndexOf("key") + "key".Length;
int endIndex = str.IndexOf("-");
string newString = str.Substring(startIndex, endIndex - startIndex);
You can simply make the start_date required using
<input type="submit" value="Submit" required />
You don't even need the checkform() then.
Thanks
I have also used a non-generic version, using the new
keyword:
public interface IMetadata
{
Type DataType { get; }
object Data { get; }
}
public interface IMetadata<TData> : IMetadata
{
new TData Data { get; }
}
Explicit interface implementation is used to allow both Data
members:
public class Metadata<TData> : IMetadata<TData>
{
public Metadata(TData data)
{
Data = data;
}
public Type DataType
{
get { return typeof(TData); }
}
object IMetadata.Data
{
get { return Data; }
}
public TData Data { get; private set; }
}
You could derive a version targeting value types:
public interface IValueTypeMetadata : IMetadata
{
}
public interface IValueTypeMetadata<TData> : IMetadata<TData>, IValueTypeMetadata where TData : struct
{
}
public class ValueTypeMetadata<TData> : Metadata<TData>, IValueTypeMetadata<TData> where TData : struct
{
public ValueTypeMetadata(TData data) : base(data)
{}
}
This can be extended to any kind of generic constraints.
Try this one, its better and tested:
HTML:
<form id="myform">
<input id="email"
oninvalid="InvalidMsg(this);"
oninput="InvalidMsg(this);"
name="email"
type="email"
required="required" />
<input type="submit" />
</form>
JAVASCRIPT:
function InvalidMsg(textbox) {
if (textbox.value === '') {
textbox.setCustomValidity('Required email address');
} else if (textbox.validity.typeMismatch){
textbox.setCustomValidity('please enter a valid email address');
} else {
textbox.setCustomValidity('');
}
return true;
}
Demo:
As pointed out by @Jason, for most shared hosting environments, having a copy of php.ini file in your public_html directory works to override the system default settings. A great way to do this is by copying the hosting company's copy. Put this in a file, say copyini.php
<?php
system("cp /path/to/php/conf/file/php.ini /home/yourusername/public_html/php.ini");
?>
Get /path/to/php/conf/file/php.ini from the output of phpinfo(); in a file. Then in your ini file, make your amendments Delete all files created during this process (Apart from php.ini of course :-) )
This option was introduced in order to remove the need to deploy very large PIAs (Primary Interop Assemblies) for interop.
It simply embeds the managed bridging code used that allows you to talk to unmanaged assemblies, but instead of embedding it all it only creates the stuff you actually use in code.
Read more in Scott Hanselman's blog post about it and other VS improvements here.
As for whether it is advised or not, I'm not sure as I don't need to use this feature. A quick web search yields a few leads:
The only risk of turning them all to false is more deployment concerns with PIA files and a larger deployment if some of those files are large.
Assuming that the OP is invoking a batch file with cmd.exe, to properly break out of a for loop just goto a label;
Change this:
For /L %%f In (1,1,1000000) Do If Not Exist %%f Goto :EOF
To this:
For /L %%f In (1,1,1000000) Do If Not Exist %%f Goto:fileError
.. do something
.. then exit or do somethign else
:fileError
GOTO:EOF
Better still, add some error reporting:
set filename=
For /L %%f In (1,1,1000000) Do(
set filename=%%f
If Not Exist %%f set tempGoto:fileError
)
.. do something
.. then exit or do somethign else
:fileError
echo file does not exist '%filename%'
GOTO:EOF
I find this to be a helpful site about lesser known cmd.exe/DOS batch file functions and tricks: https://www.dostips.com/
I think, here, right click is not mentioned, @Jishnu V S.
document.onkeydown = function(e) {
if(e.keyCode == 123) {
return false;
}
if(e.ctrlKey && e.shiftKey && e.keyCode == 'I'.charCodeAt(0)){
return false;
}
if(e.ctrlKey && e.shiftKey && e.keyCode == 'J'.charCodeAt(0)){
return false;
}
if(e.ctrlKey && e.keyCode == 'U'.charCodeAt(0)){
return false;
}
if(e.ctrlKey && e.shiftKey && e.keyCode == 'C'.charCodeAt(0)){
return false;
}
}
_x000D_
Try this:
function reload(){_x000D_
var container = document.getElementById("yourDiv");_x000D_
var content = container.innerHTML;_x000D_
container.innerHTML= content; _x000D_
_x000D_
//this line is to watch the result in console , you can remove it later _x000D_
console.log("Refreshed"); _x000D_
}
_x000D_
<a href="javascript: reload()">Click to Reload</a>_x000D_
<div id="yourDiv">The content that you want to refresh/reload</div>
_x000D_
Hope it works. Let me know
Your FMAT.h requires a definition of std::string in order to complete the definition of class FMAT. In FMAT.cpp, you've done this by #include <string>
before #include "FMAT.h"
. You haven't done that in your main file.
Your attempt to forward declare string
was incorrect on two levels. First you need a fully qualified name, std::string
. Second this works only for pointers and references, not for variables of the declared type; a forward declaration doesn't give the compiler enough information about what to embed in the class you're defining.
purls $.params()
used without a parameter will give you a key-value object of the parameters.
jQuerys $.param()
will build a querystring from the supplied object/array.
var params = parsedUrl.param();
delete params["page"];
var newUrl = "?page=" + $(this).val() + "&" + $.param(params);
Update
I've no idea why I used delete
here...
var params = parsedUrl.param();
params["page"] = $(this).val();
var newUrl = "?" + $.param(params);
Use Data.List.Split
, which uses split
:
[me@localhost]$ ghci
Prelude> import Data.List.Split
Prelude Data.List.Split> let l = splitOn "," "1,2,3,4"
Prelude Data.List.Split> :t l
l :: [[Char]]
Prelude Data.List.Split> l
["1","2","3","4"]
Prelude Data.List.Split> let { convert :: [String] -> [Integer]; convert = map read }
Prelude Data.List.Split> let l2 = convert l
Prelude Data.List.Split> :t l2
l2 :: [Integer]
Prelude Data.List.Split> l2
[1,2,3,4]
If you are looking for a range of columns, you can try this:
df.iloc[7:] = df.iloc[7:].astype(float)
The examples above will convert type to be float, for all the columns begin with the 7th to the end. You of course can use different type or different range.
I think this is useful when you have a big range of columns to convert and a lot of rows. It doesn't make you go over each row by yourself - I believe numpy do it more efficiently.
This is useful only if you know that all the required columns contain numbers only - it will not change "bad values" (like string) to be NaN for you.
You can simply use %
twice, that is "%%"
Example:
printf("You gave me 12.3 %% of profit");
If you use this syntax:
<div ng-attr-id="{{ 'object-' + myScopeObject.index }}"></div>
Angular will render something like:
<div ng-id="object-1"></div>
However this syntax:
<div id="{{ 'object-' + $index }}"></div>
will generate something like:
<div id="object-1"></div>
If you happen to be using the amqplib library as I am, they have a handy example of an implementation of the Publish/Subscribe RabbitMQ tutorial which you might find handy.
This page shows up when you google how to convert to base64, so for completeness:
$b = [System.Text.Encoding]::UTF8.GetBytes("blahblah")
[System.Convert]::ToBase64String($b)
In addition:
AppDomain.CurrentDomain.BaseDirectory
Assembly.GetEntryAssembly().Location
Although Martijin's answer is prob best. Here is a more intuitive way to process large csv files for beginners. This allows you to process groups of rows, or chunks, at a time.
import pandas as pd
chunksize = 10 ** 8
for chunk in pd.read_csv(filename, chunksize=chunksize):
process(chunk)
We find ourselves in a universe which appears to progress along a dimension we call "time". We don't really understand what time is, but we have developed abstractions and vocabulary that let us reason and talk about it: "past", "present", "future", "before", "after".
The computer systems we build--more and more--have time as an important dimension. Certain things are set up to happen in the future. Then other things need to happen after those first things eventually occur. This is the basic notion called "asynchronicity". In our increasingly networked world, the most common case of asynchronicity is waiting for some remote system to respond to some request.
Consider an example. You call the milkman and order some milk. When it comes, you want to put it in your coffee. You can't put the milk in your coffee right now, because it is not here yet. You have to wait for it to come before putting it in your coffee. In other words, the following won't work:
var milk = order_milk();
put_in_coffee(milk);
Because JS has no way to know that it needs to wait for order_milk
to finish before it executes put_in_coffee
. In other words, it does not know that order_milk
is asynchronous--is something that is not going to result in milk until some future time. JS, and other declarative languages execute one statement after another without waiting.
The classic JS approach to this problem, taking advantage of the fact that JS supports functions as first-class objects which can be passed around, is to pass a function as a parameter to the asynchronous request, which it will then invoke when it has completed its task sometime in the future. That is the "callback" approach. It looks like this:
order_milk(put_in_coffee);
order_milk
kicks off, orders the milk, then, when and only when it arrives, it invokes put_in_coffee
.
The problem with this callback approach is that it pollutes the normal semantics of a function reporting its result with return
; instead, functions must not reports their results by calling a callback given as a parameter. Also, this approach can rapidly become unwieldy when dealing with longer sequences of events. For example, let's say that I want to wait for the milk to be put in the coffee, and then and only then perform a third step, namely drinking the coffee. I end up needing to write something like this:
order_milk(function(milk) { put_in_coffee(milk, drink_coffee); }
where I am passing to put_in_coffee
both the milk to put in it, and also the action (drink_coffee
) to execute once the milk has been put in. Such code becomes hard to write, and read, and debug.
In this case, we could rewrite the code in the question as:
var answer;
$.ajax('/foo.json') . done(function(response) {
callback(response.data);
});
function callback(data) {
console.log(data);
}
This was the motivation for the notion of a "promise", which is a particular type of value which represents a future or asynchronous outcome of some sort. It can represent something that already happened, or that is going to happen in the future, or might never happen at all. Promises have a single method, named then
, to which you pass an action to be executed when the outcome the promise represents has been realized.
In the case of our milk and coffee, we design order_milk
to return a promise for the milk arriving, then specify put_in_coffee
as a then
action, as follows:
order_milk() . then(put_in_coffee)
One advantage of this is that we can string these together to create sequences of future occurrences ("chaining"):
order_milk() . then(put_in_coffee) . then(drink_coffee)
Let's apply promises to your particular problem. We will wrap our request logic inside a function, which returns a promise:
function get_data() {
return $.ajax('/foo.json');
}
Actually, all we've done is added a return
to the call to $.ajax
. This works because jQuery's $.ajax
already returns a kind of promise-like thing. (In practice, without getting into details, we would prefer to wrap this call so as for return a real promise, or use some alternative to $.ajax
that does so.) Now, if we want to load the file and wait for it to finish and then do something, we can simply say
get_data() . then(do_something)
for instance,
get_data() .
then(function(data) { console.log(data); });
When using promises, we end up passing lots of functions into then
, so it's often helpful to use the more compact ES6-style arrow functions:
get_data() .
then(data => console.log(data));
async
keywordBut there's still something vaguely dissatisfying about having to write code one way if synchronous and a quite different way if asynchronous. For synchronous, we write
a();
b();
but if a
is asynchronous, with promises we have to write
a() . then(b);
Above, we said, "JS has no way to know that it needs to wait for the first call to finish before it executes the second". Wouldn't it be nice if there was some way to tell JS that? It turns out that there is--the await
keyword, used inside a special type of function called an "async" function. This feature is part of the upcoming version of ES but is already available in transpilers such as Babel given the right presets. This allows us to simply write
async function morning_routine() {
var milk = await order_milk();
var coffee = await put_in_coffee(milk);
await drink(coffee);
}
In your case, you would be able to write something like
async function foo() {
data = await get_data();
console.log(data);
}
I created an HtmlHelper
extension that adds an ActiveActionLink
method for those of you who want to add the "active" class to the link itself rather than the <li>
surrounding the link.
public static class LinkExtensions
{
public static MvcHtmlString ActiveActionLink(this HtmlHelper html, string linkText, string actionName, string controllerName, object routeValues, object htmlAttributes)
{
return ActiveActionLink(html, linkText, actionName, controllerName, new RouteValueDictionary(routeValues), HtmlHelper.AnonymousObjectToHtmlAttributes(htmlAttributes));
}
public static MvcHtmlString ActiveActionLink(this HtmlHelper html, string linkText, string actionName, string controllerName, RouteValueDictionary routeValues, IDictionary<string, object> htmlAttributes)
{
const string activeClassName = "active";
var routeData = html.ViewContext.RouteData;
var routeAction = (string)routeData.Values["action"];
var routeController = (string)routeData.Values["controller"];
var active = controllerName.Equals(routeController) && actionName.Equals(routeAction);
if (active)
{
var @class = (string)htmlAttributes["class"];
htmlAttributes["class"] = string.IsNullOrEmpty(@class)
? activeClassName
: @class + " active";
}
var link = html.ActionLink(linkText, actionName, controllerName, routeValues, htmlAttributes);
return link;
}
}
Usage is as follows:
@Html.ActiveActionLink("Home", "Index", "Home", new { area = "" }, new { @class = "nav-item nav-link" })
Below is an adaptation of previous code for using under PyQt5 and Matplotlib 2.0. There are a number of small changes: structure of PyQt submodules, other submodule from matplotlib, deprecated method has been replaced...
import sys
from PyQt5.QtWidgets import QDialog, QApplication, QPushButton, QVBoxLayout
from matplotlib.backends.backend_qt5agg import FigureCanvasQTAgg as FigureCanvas
from matplotlib.backends.backend_qt5agg import NavigationToolbar2QT as NavigationToolbar
import matplotlib.pyplot as plt
import random
class Window(QDialog):
def __init__(self, parent=None):
super(Window, self).__init__(parent)
# a figure instance to plot on
self.figure = plt.figure()
# this is the Canvas Widget that displays the `figure`
# it takes the `figure` instance as a parameter to __init__
self.canvas = FigureCanvas(self.figure)
# this is the Navigation widget
# it takes the Canvas widget and a parent
self.toolbar = NavigationToolbar(self.canvas, self)
# Just some button connected to `plot` method
self.button = QPushButton('Plot')
self.button.clicked.connect(self.plot)
# set the layout
layout = QVBoxLayout()
layout.addWidget(self.toolbar)
layout.addWidget(self.canvas)
layout.addWidget(self.button)
self.setLayout(layout)
def plot(self):
''' plot some random stuff '''
# random data
data = [random.random() for i in range(10)]
# instead of ax.hold(False)
self.figure.clear()
# create an axis
ax = self.figure.add_subplot(111)
# discards the old graph
# ax.hold(False) # deprecated, see above
# plot data
ax.plot(data, '*-')
# refresh canvas
self.canvas.draw()
if __name__ == '__main__':
app = QApplication(sys.argv)
main = Window()
main.show()
sys.exit(app.exec_())
For arbitrary precision mathematics PHP offers the Binary Calculator which supports numbers of any size and precision, represented as strings.
$s = '1234.13';
$double = bcadd($s,'0',2);
python doc strings are free-form, you can document it in any way you like.
Examples:
def mymethod(self, foo, bars):
"""
Does neat stuff!
Parameters:
foo - a foo of type FooType to bar with.
bars - The list of bars
"""
Now, there are some conventions, but python doesn't enforce any of them. Some projects have their own conventions. Some tools to work with docstrings also follow specific conventions.
In NodeJS you can print an object by using util.inspect(obj)
. Be sure to state the depth or you'll only have a shallow print of the object.
Annotate type and gender properties with @XmlAttribute
and the description property with @XmlValue
:
package org.example.sport;
import javax.xml.bind.annotation.*;
@XmlAccessorType(XmlAccessType.FIELD)
@XmlRootElement
public class Sport {
@XmlAttribute
protected String type;
@XmlAttribute
protected String gender;
@XmlValue;
protected String description;
}
For More Information
Another way to do it is to just use jQuery to grab the element, then go through actual Javascript to get and set and play with the event handlers. For instance:
var oldEventHandler = $('#element')[0].onclick;
// Remove event handler
$('#element')[0].onclick = null;
// Switch it back
$('#element')[0].onclick = oldEventHandler;
to get the number of observations the number of rows from your Dataset would be more valid:
nrow(dat[dat$sCode == "CA",])
Observation
Try this :
var feed = {created_at: "2017-03-14T01:00:32Z", entry_id: 33358, field1: "4", field2: "4", field3: "0"};_x000D_
_x000D_
var data = [];_x000D_
data.push(feed);_x000D_
_x000D_
console.log(data);
_x000D_
Instead of :
var my_json = {created_at: "2017-03-14T01:00:32Z", entry_id: 33358, field1: "4", field2: "4", field3: "0"};_x000D_
_x000D_
var data = [];_x000D_
for(var i in my_json) {_x000D_
data.push(my_json[i]);_x000D_
}_x000D_
_x000D_
console.log(data);
_x000D_
import json
with open('result.json', 'w') as fp:
json.dump(sample, fp)
This is an easier way to do it.
In the second line of code the file result.json
gets created and opened as the variable fp
.
In the third line your dict sample
gets written into the result.json
!
You can not. You will / do break a lot of things. Like relationships. WHich rely on the number being pulled back which EF can not do in the way you set it up. THe price for breaking every pattern there is.
Generate the GUID in the C# layer, so that relationships can continue working.
oracleserviceorcl
service. (From services in Task Manager)ORACLE_SID
variable with orcl
value. (In environment variables)According to the API Reference:
By default the height is calculated from the offset height of the containing element. Defaults to null.
So, you can control it's height
according to the parent div using redraw
event, which is called when it changes it's size.
References
This error can happen if you have two jars that contains the same class names, e.g. I had two library: jsr311-api-1.1.1.jar, and jersey-core-1.17.1.jar, both containing the class javax.ws.rs.ApplicationPath. I removed jsr311-api-1.1.1.jar and it worked fine.
You can use numpy.asarray, for example to convert a list into an array:
>>> a = [1, 2]
>>> np.asarray(a)
array([1, 2])
Set MaximizeBox
and MinimizeBox
form properties to False
Run the command INFO
. The version will be the first item displayed.
The advantage of this over redis-server --version is that sometimes you don't have access to the server (e.g. when it's provided to you on the cloud), in which case INFO
is your only option.
function sayHello() {
//alert(this.message);
return this.message;
}
var obj = {
message: "Hello"
};
function x(country) {
var z = sayHello.bind(obj);
setTimeout(y = function(w) {
//'this' reference not lost
return z() + ' ' + country + ' ' + w;
}, 1000);
return y;
}
var t = x('India')('World');
document.getElementById("demo").innerHTML = t;
You can reset the index using reset_index
to get back a default index of 0, 1, 2, ..., n-1 (and use drop=True
to indicate you want to drop the existing index instead of adding it as an additional column to your dataframe):
In [19]: df2 = df2.reset_index(drop=True)
In [20]: df2
Out[20]:
x y
0 0 0
1 0 1
2 0 2
3 1 0
4 1 1
5 1 2
6 2 0
7 2 1
8 2 2
If you want to include jQuery code from another JS file, this should do the trick:
I had the following in my HTML file:
<script src="jquery-1.6.1.js"></script>
<script src="my_jquery.js"></script>
I created a separate my_jquery.js file with the following:
$(document).ready(function() {
$('a').click(function(event) {
event.preventDefault();
$(this).hide("slow");
});
});
The way to do this in 2019+ is to use DeviceOrientation
API. This works in most modern browsers on desktop and mobile.
window.addEventListener("deviceorientation", handleOrientation, true);
After registering your event listener (in this case, a JavaScript function called handleOrientation()), your listener function periodically gets called with updated orientation data.
The orientation event contains four values:
DeviceOrientationEvent.absolute
DeviceOrientationEvent.alpha
DeviceOrientationEvent.beta
DeviceOrientationEvent.gamma
The event handler function can look something like this:
function handleOrientation(event) { var absolute = event.absolute; var alpha = event.alpha; var beta = event.beta; var gamma = event.gamma; // Do stuff with the new orientation data }
for more extendability for large scale apps use oop style with encapsulated fields.
Simple way :-
class Fruit implements JsonSerializable {
private $type = 'Apple', $lastEaten = null;
public function __construct() {
$this->lastEaten = new DateTime();
}
public function jsonSerialize() {
return [
'category' => $this->type,
'EatenTime' => $this->lastEaten->format(DateTime::ISO8601)
];
}
}
echo json_encode(new Fruit()); //which outputs:
{"category":"Apple","EatenTime":"2013-01-31T11:17:07-0500"}
Real Gson on PHP :-
https://github.com/bkdotcom/PHPDebugConsole
Support for all the javascript console methods:
assert, clear, count, error, group, groupCollapsed, groupEnd, info, log, table, trace, time, timeEnd, warn
plus a few more:
alert, groupSummary, groupUncollapse, timeGet
$debug = new \bdk\Debug(array(
'collect' => true,
'output' => true,
'outputAs' => 'script',
));
$debug->log('hello world');
$debug->info('all of the javascript console methods are supported');
\bdk\Debug::_log('can use static methods');
$debug->trace();
$list = array(
array('userId'=>1, 'name'=>'Bob', 'sex'=>'M', 'naughty'=>false),
array('userId'=>10, 'naughty'=>true, 'name'=>'Sally', 'extracol' => 'yes', 'sex'=>'F'),
array('userId'=>2, 'name'=>'Fred', 'sex'=>'M', 'naughty'=>false),
);
$debug->table('people', $list);
this will output the appropriate <script>
tag upon script shutdown
alternatively, you can output as html, chromeLogger, FirePHP, file, plaintext, websockets, etc
upcomming release includes a psr-3 (logger) implementation
Maybe you're talking about the Reverse Polish Notation? If yes you can find on wikipedia a very detailed step-to-step example for the conversion; if not I have no idea what you're asking :(
You might also want to read my answer to another question where I provided such an implementation: C++ simple operations (+,-,/,*) evaluation class
This is a bit late, but I just stumbled on this problem, trying to resolve my own problem of this kind. I then realized that I had this line in the ajax post wrong:
data: "{'quantity' : " + total_qty + ",'itemId':" + itemId + "}",
It should be:
data: "{quantity : '" + total_qty + "',itemId: '" + itemId + "'}",
As well as the WebMethod to:
public static string AddTo_Cart(string quantity, string itemId)
And this resolved my problem.
Hope it may be of help to someone else as well.
I will give you steps to writing and compiling code. Use this example:
public class Paycheck {
public static void main(String args[]) {
double amountInAccount;
amountInAccount = 128.57;
System.out.print("You earned $");
System.out.print(amountInAccount);
System.out.println(" at work today.");
}
}
Paycheck.java
cd Desktop
javac Paycheck.java
java Paycheck
use curl php library: http://php.net/manual/en/book.curl.php
direct example: CURL_EXEC:
<?php
// create a new cURL resource
$ch = curl_init();
// set URL and other appropriate options
curl_setopt($ch, CURLOPT_URL, "http://www.example.com/");
curl_setopt($ch, CURLOPT_HEADER, 0);
// grab URL and pass it to the browser
curl_exec($ch);
// close cURL resource, and free up system resources
curl_close($ch);
?>
If you need to echo
a string that contains an ampersand, quotes won't help, because you would see them on the output as well. In such a case, use for
:
for %a in ("First & Last") do echo %~a
...in a batch script:
for %%a in ("First & Last") do echo %%~a
or
for %%a in ("%~1") do echo %%~a
I've got the same error! One of the reasons was the DB connection was not closed. Therefore, check for unclosed DB connections. Also, check if you have committed the DB before closing the connection.
I got involved whole a day, too! and finally found the solution in shell
command instead of copy: or command: as below:
- hosts: remote-server-name
gather_facts: no
vars:
src_path: "/path/to/source/"
des_path: "/path/to/dest/"
tasks:
- name: Ansible copy files remote to remote
shell: 'cp -r {{ src_path }}/. {{ des_path }}'
strictly notice to:
1. src_path and des_path end by /
symbol
2. in shell command src_path ends by .
which shows all content of directory
3. I used my remote-server-name both in hosts: and execute shell
section of jenkins, instead of remote_src:
specifier in playbook.
I guess it is a good advice to run below command in Execute Shell section in jenkins:
ansible-playbook copy-payment.yml -i remote-server-name
If $AccountNumber
or $Balance
is a node-set, then this behavior could easily happen. It's not because and
is being treated as or
.
For example, if $AccountNumber
referred to nodes with the values 12345
and 66
and $Balance
referred to nodes with the values 55
and 0
, then
$AccountNumber != '12345'
would be true (because 66
is not equal to 12345
) and $Balance != '0'
would be true (because 55
is not equal to 0
).
I'd suggest trying this instead:
<xsl:when test="not($AccountNumber = '12345' or $Balance = '0')">
$AccountNumber = '12345' or $Balance = '0'
will be true any time there is an $AccountNumber
with the value 12345
or there is a $Balance
with the value 0
, and if you apply not()
to that, you will get a false result.
Using the word class as a key in a Javascript dictionary can also trigger the dreaded "Expected identifier, string or number" error because class is a reserved keyword in Internet Explorer.
BAD
{ class : 'overlay'} // ERROR: Expected identifier, string or number
GOOD
{'class': 'overlay'}
When using a reserved keyword as a key in a Javascript dictionary, enclose the key in quotes.
Hope this hint saves you a day of debugging hell.
Incase of arrays, the base address (i.e. address of the array) is the address of the 1st element in the array. Also the array name acts as a pointer.
Consider a row of houses (each is an element in the array). To identify the row, you only need the 1st house address.You know each house is followed by the next (sequential).Getting the address of the 1st house, will also give you the address of the row.
Incase of string literals(character arrays defined at declaration), they are automatically
appended by \0
.
printf
prints using the format specifier and the address provided. Since, you use %s
it prints from the 1st address (incrementing the pointer using arithmetic) until '\0'
This worked for me:
OkHttpClient client = new OkHttpClient.Builder()
.connectTimeout(10, TimeUnit.SECONDS)
.readTimeout(10, TimeUnit.SECONDS)
.writeTimeout(10, TimeUnit.SECONDS)
.retryOnConnectionFailure(false) <-- not necessary but useful!
.build();
It depends. The System.Timers.Timer
has two modes of operation.
If SynchronizingObject
is set to an ISynchronizeInvoke
instance then the Elapsed
event will execute on the thread hosting the synchronizing object. Usually these ISynchronizeInvoke
instances are none other than plain old Control
and Form
instances that we are all familiar with. So in that case the Elapsed
event is invoked on the UI thread and it behaves similar to the System.Windows.Forms.Timer
. Otherwise, it really depends on the specific ISynchronizeInvoke
instance that was used.
If SynchronizingObject
is null then the Elapsed
event is invoked on a ThreadPool
thread and it behaves similar to the System.Threading.Timer
. In fact, it actually uses a System.Threading.Timer
behind the scenes and does the marshaling operation after it receives the timer callback if needed.
This is an old post but still a problem within the Chrome dev tools. I find the best way to check mobile source locally is to open the site locally in Xcode's iOS Simulator. Then from there you open the Safari browser and enable dev tools, if you have not already done this (go to preferences -> advanced -> show develop menu in menu bar). Now you will see the develop option in the main menu and can go to develop -> iOS Simulator -> and the page you have open in Xcode's iOS Simulator will be there. Once you click on it, it will open the web inspector and you can edit as you would normally in the browser dev tools.
I'm afraid this solution will only work on a Mac though as it uses Xcode.
That would be:
b.rstrip('\n')
If you want to strip space from each and every line, you might consider instead:
a.read().splitlines()
This will give you a list of lines, without the line end characters.
int o1 = date1.IndexOf("-");
int o2 = date1.IndexOf("-",o1 + 1);
string str11 = date1.Substring(0,o1);
string str12 = date1.Substring(o1 + 1, o2 - o1 - 1);
string str13 = date1.Substring(o2 + 1);
int o21 = date2.IndexOf("-");
int o22 = date2.IndexOf("-", o1 + 1);
string str21 = date2.Substring(0, o1);
string str22 = date2.Substring(o1 + 1, o2 - o1 - 1);
string str23 = date2.Substring(o2 + 1);
if (Convert.ToInt32(str11) > Convert.ToInt32(str21))
{
}
else if (Convert.ToInt32(str12) > Convert.ToInt32(str22))
{
}
else if (Convert.ToInt32(str12) == Convert.ToInt32(str22) && Convert.ToInt32(str13) > Convert.ToInt32(str23))
{
}
Apple's recommendation recoded in Swift + Using UIScrollView with Auto Layout in iOS (basing on these following links: link 1, link 2, link 3):
import UIKit
class ViewController: UIViewController, UITextFieldDelegate {
@IBOutlet var t1: UITextField!
@IBOutlet var t2: UITextField!
@IBOutlet var t3: UITextField!
@IBOutlet var t4: UITextField!
@IBOutlet var srcScrollView: UIScrollView!
@IBOutlet var contentView: UIView!
var contentViewCoordinates: CGPoint!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
/* Constraints on content view */
let leftConstraint = NSLayoutConstraint(item:self.contentView,
attribute:NSLayoutAttribute.Leading,
relatedBy:NSLayoutRelation.Equal,
toItem:self.view,
attribute:NSLayoutAttribute.Left,
multiplier:1.0,
constant:0)
self.view.addConstraint(leftConstraint)
let rightConstraint = NSLayoutConstraint(item:self.contentView,
attribute:NSLayoutAttribute.Trailing,
relatedBy:NSLayoutRelation.Equal,
toItem:self.view,
attribute:NSLayoutAttribute.Right,
multiplier:1.0,
constant:0)
self.view.addConstraint(rightConstraint)
/* Tap gesture */
let tapGesture: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: "hideKeyboard")
// prevents the scroll view from swallowing up the touch event of child buttons
tapGesture.cancelsTouchesInView = false
srcScrollView.addGestureRecognizer(tapGesture)
/* Save content view coordinates */
contentViewCoordinates = contentView.frame.origin
}
func hideKeyboard() {
t1.resignFirstResponder()
t2.resignFirstResponder()
t3.resignFirstResponder()
t4.resignFirstResponder()
}
var activeField: UITextField?
func textFieldDidBeginEditing(textField: UITextField) {
activeField = textField
}
func textFieldDidEndEditing(textField: UITextField) {
activeField = nil
}
override func viewWillAppear(animated: Bool) {
super.viewWillAppear(animated)
let center = NSNotificationCenter.defaultCenter()
center.addObserver(self, selector: "keyboardOnScreen:", name: UIKeyboardDidShowNotification, object: nil)
center.addObserver(self, selector: "keyboardOffScreen:", name: UIKeyboardDidHideNotification, object: nil)
}
func keyboardOnScreen(notification: NSNotification){
// Retrieve the size and top margin (inset is the fancy word used by Apple)
// of the keyboard displayed.
let info: NSDictionary = notification.userInfo!
let kbSize = info.valueForKey(UIKeyboardFrameEndUserInfoKey)?.CGRectValue().size
let contentInsets: UIEdgeInsets = UIEdgeInsetsMake(0.0, 0.0, kbSize!.height, 0.0)
srcScrollView.contentInset = contentInsets
srcScrollView.scrollIndicatorInsets = contentInsets
var aRect: CGRect = self.view.frame
aRect.size.height -= kbSize!.height
//you may not need to scroll, see if the active field is already visible
if (CGRectContainsPoint(aRect, activeField!.frame.origin) == false) {
let scrollPoint:CGPoint = CGPointMake(0.0, activeField!.frame.origin.y - kbSize!.height)
srcScrollView.setContentOffset(scrollPoint, animated: true)
}
}
// func keyboardOnScreen(aNotification: NSNotification) {
// let info: NSDictionary = aNotification.userInfo!
// let kbSize = info.valueForKey(UIKeyboardFrameEndUserInfoKey)?.CGRectValue().size
//
// var bkgndRect: CGRect! = activeField?.superview?.frame
//
// bkgndRect.size.height += kbSize!.height
//
// activeField?.superview?.frame = bkgndRect
//
// srcScrollView.setContentOffset(CGPointMake(0.0, activeField!.frame.origin.y - kbSize!.height), animated: true)
// }
func keyboardOffScreen(notification: NSNotification){
let contentInsets:UIEdgeInsets = UIEdgeInsetsZero
srcScrollView.contentInset = contentInsets
srcScrollView.scrollIndicatorInsets = contentInsets
self.srcScrollView.setContentOffset(CGPointMake(0, -self.view.frame.origin.y/2), animated: true)
}
}
The arguments that you provide to a bashscript will appear in the variables $1
and $2
and $3
where the number refers to the argument. $0
is the command itself.
The arguments are seperated by spaces, so if you would provide the -from
and -to
in the command, they will end up in these variables too, so for this:
./ocrscript.sh -from /home/kristoffer/test.png -to /home/kristoffer/test.txt
You'll get:
$0 # ocrscript.sh
$1 # -from
$2 # /home/kristoffer/test.png
$3 # -to
$4 # /home/kristoffer/test.txt
It might be easier to omit the -from
and the -to
, like:
ocrscript.sh /home/kristoffer/test.png /home/kristoffer/test.txt
Then you'll have:
$1 # /home/kristoffer/test.png
$2 # /home/kristoffer/test.txt
The downside is that you'll have to supply it in the right order. There are libraries that can make it easier to parse named arguments on the command line, but usually for simple shell scripts you should just use the easy way, if it's no problem.
Then you can do:
/usr/local/bin/abbyyocr9 -rl Swedish -if "$1" -of "$2" 2>&1
The double quotes around the $1
and the $2
are not always necessary but are adviced, because some strings won't work if you don't put them between double quotes.
I found that a combination of the other answers works:
interface ApiInterface {
@GET("/someurl")
Call<ResponseBody> getdata()
}
apiService.getdata().enqueue(object : Callback {
override fun onResponse(call: Call, response: Response) {
val rawJsonString = response.body()?.string()
}
})
The important part are that the response type should be ResponseBody
and use response.body()?.string()
to get the raw string.
SQL Server does not have a TRIM function, but rather it has two. One each for specifically trimming spaces from the "front" of a string (LTRIM) and one for trimming spaces from the "end" of a string (RTRIM).
Something like the following will update every record in your table, trimming all extraneous space (either at the front or the end) of a varchar/nvarchar field:
UPDATE
[YourTableName]
SET
[YourFieldName] = LTRIM(RTRIM([YourFieldName]))
(Strangely, SSIS (Sql Server Integration Services) does have a single TRIM function!)
Starting from api level 11 or Honeycomb doing network operations on main thread is forbidden. Use thread or asynctask. For more info visit https://developer.android.com/reference/android/os/NetworkOnMainThreadException.html
They all are unique, yes
If you're sure that your values are unique you can iterate over the entries of your old map .
Map<String, Character> myNewHashMap = new HashMap<>();
for(Map.Entry<Character, String> entry : myHashMap.entrySet()){
myNewHashMap.put(entry.getValue(), entry.getKey());
}
Alternatively, you can use a Bi-Directional map like Guava provides and use the inverse()
method :
BiMap<Character, String> myBiMap = HashBiMap.create();
myBiMap.put('a', "test one");
myBiMap.put('b', "test two");
BiMap<String, Character> myBiMapInversed = myBiMap.inverse();
As java-8 is out, you can also do it this way :
Map<String, Integer> map = new HashMap<>();
map.put("a",1);
map.put("b",2);
Map<Integer, String> mapInversed =
map.entrySet()
.stream()
.collect(Collectors.toMap(Map.Entry::getValue, Map.Entry::getKey))
Finally, I added my contribution to the proton pack library, which contains utility methods for the Stream API. With that you could do it like this:
Map<Character, String> mapInversed = MapStream.of(map).inverseMapping().collect();
I realize this is an old thread, but for those taking @JasonMArcher's accepted answer above as fact, I'm surprised it has not been corrected many of us have known for years it is actually the PIPELINE adding the delay and NOTHING to do with whether it is Out-Null or not. In fact, if you run the tests below you will quickly see that the same "faster" casting to [void] and $void= that for years we all used thinking it was faster, are actually JUST AS SLOW and in fact VERY SLOW when you add ANY pipelining whatsoever. In other words, as soon as you pipe to anything, the whole rule of not using out-null goes into the trash.
Proof, the last 3 tests in the list below. The horrible Out-null was 32339.3792 milliseconds, but wait - how much faster was casting to [void]? 34121.9251 ms?!? WTF? These are REAL #s on my system, casting to VOID was actually SLOWER. How about =$null? 34217.685ms.....still friggin SLOWER! So, as the last three simple tests show, the Out-Null is actually FASTER in many cases when the pipeline is already in use.
So, why is this? Simple. It is and always was 100% a hallucination that piping to Out-Null was slower. It is however that PIPING TO ANYTHING is slower, and didn't we kind of already know that through basic logic? We just may not have know HOW MUCH slower, but these tests sure tell a story about the cost of using the pipeline if you can avoid it. And, we were not really 100% wrong because there is a very SMALL number of true scenarios where out-null is evil. When? When adding Out-Null is adding the ONLY pipeline activity. In other words....the reason a simple command like $(1..1000) | Out-Null as shown above showed true.
If you simply add an additional pipe to Out-String to every test above, the #s change radically (or just paste the ones below) and as you can see for yourself, the Out-Null actually becomes FASTER in many cases:
$GetProcess = Get-Process
# Batch 1 - Test 1
(Measure-Command {
for ($i = 1; $i -lt 99; $i++)
{
$GetProcess | Out-Null
}
}).TotalMilliseconds
# Batch 1 - Test 2
(Measure-Command {
for ($i = 1; $i -lt 99; $i++)
{
[void]($GetProcess)
}
}).TotalMilliseconds
# Batch 1 - Test 3
(Measure-Command {
for ($i = 1; $i -lt 99; $i++)
{
$null = $GetProcess
}
}).TotalMilliseconds
# Batch 2 - Test 1
(Measure-Command {
for ($i = 1; $i -lt 99; $i++)
{
$GetProcess | Select-Object -Property ProcessName | Out-Null
}
}).TotalMilliseconds
# Batch 2 - Test 2
(Measure-Command {
for ($i = 1; $i -lt 99; $i++)
{
[void]($GetProcess | Select-Object -Property ProcessName )
}
}).TotalMilliseconds
# Batch 2 - Test 3
(Measure-Command {
for ($i = 1; $i -lt 99; $i++)
{
$null = $GetProcess | Select-Object -Property ProcessName
}
}).TotalMilliseconds
# Batch 3 - Test 1
(Measure-Command {
for ($i = 1; $i -lt 99; $i++)
{
$GetProcess | Select-Object -Property Handles, NPM, PM, WS, VM, CPU, Id, SI, Name | Out-Null
}
}).TotalMilliseconds
# Batch 3 - Test 2
(Measure-Command {
for ($i = 1; $i -lt 99; $i++)
{
[void]($GetProcess | Select-Object -Property Handles, NPM, PM, WS, VM, CPU, Id, SI, Name )
}
}).TotalMilliseconds
# Batch 3 - Test 3
(Measure-Command {
for ($i = 1; $i -lt 99; $i++)
{
$null = $GetProcess | Select-Object -Property Handles, NPM, PM, WS, VM, CPU, Id, SI, Name
}
}).TotalMilliseconds
# Batch 4 - Test 1
(Measure-Command {
for ($i = 1; $i -lt 99; $i++)
{
$GetProcess | Out-String | Out-Null
}
}).TotalMilliseconds
# Batch 4 - Test 2
(Measure-Command {
for ($i = 1; $i -lt 99; $i++)
{
[void]($GetProcess | Out-String )
}
}).TotalMilliseconds
# Batch 4 - Test 3
(Measure-Command {
for ($i = 1; $i -lt 99; $i++)
{
$null = $GetProcess | Out-String
}
}).TotalMilliseconds
conda create --name new_name --copy --clone old_name
is better
I use conda create --name new_name --clone old_name
which is without --copy
but encountered pip breaks...
the following url may help Installing tensorflow in cloned conda environment breaks conda environment it was cloned from
Wrap them in a containing div with the background color applied to it, and have a clearing div after the 'columns'.
<div style="background-color: yellow;">
<div style="float: left;width: 65%;">column a</div>
<div style="float: right;width: 35%;">column b</div>
<div style="clear: both;"></div>
</div>
Updated to address some comments and my own thoughts:
This method works because its essentially a simplification of your problem, in this somewhat 'oldskool' method I put two columns in followed by an empty clearing element, the job of the clearing element is to tell the parent (with the background) this is where floating behaviour ends, this allows the parent to essentially render 0 pixels of height at the position of the clear, which will be whatever the highest priorly floating element is.
The reason for this is to ensure the parent element is as tall as the tallest column, the background is then set on the parent to give the appearance that both columns have the same height.
It should be noted that this technique is 'oldskool' because the better choice is to trigger this height calculation behaviour with something like clearfix or by simply having overflow: hidden on the parent element.
Whilst this works in this limited scenario, if you wish for each column to look visually different, or have a gap between them, then setting a background on the parent element won't work, there is however a trick to get this effect.
The trick is to add bottom padding to all columns, to the max amount of size you expect that could be the difference between the shortest and tallest column, if you can't work this out then pick a large figure, you then need to add a negative bottom margin of the same number.
You'll need overflow hidden on the parent object, but the result will be that each column will request to render this additional height suggested by the margin, but not actually request layout of that size (because the negative margin counters the calculation).
This will render the parent at the size of the tallest column, whilst allowing all the columns to render at their height + the size of bottom padding used, if this height is larger than the parent then the rest will simply clip off.
<div style="overflow: hidden;">
<div style="background: blue;float: left;width: 65%;padding-bottom: 500px;margin-bottom: -500px;">column a<br />column a</div>
<div style="background: red;float: right;width: 35%;padding-bottom: 500px;margin-bottom: -500px;">column b</div>
</div>
You can see an example of this technique on the bowers and wilkins website (see the four horizontal spotlight images the bottom of the page).
Use following command to increase java heap size for tomcat7 (linux distributions) correctly:
echo 'export CATALINA_OPTS="-Xms512M -Xmx1024M"' > /usr/share/tomcat7/bin/setenv.sh
If you get a python error like this:
AttributeError: 'str' object has no attribute 'some_method'
You probably poisoned your object accidentally by overwriting your object with a string.
How to reproduce this error in python with a few lines of code:
#!/usr/bin/env python
import json
def foobar(json):
msg = json.loads(json)
foobar('{"batman": "yes"}')
Run it, which prints:
AttributeError: 'str' object has no attribute 'loads'
But change the name of the variablename, and it works fine:
#!/usr/bin/env python
import json
def foobar(jsonstring):
msg = json.loads(jsonstring)
foobar('{"batman": "yes"}')
This error is caused when you tried to run a method within a string. String has a few methods, but not the one you are invoking. So stop trying to invoke a method which String does not define and start looking for where you poisoned your object.
npm update solves the issue for me
Neither is a good way to check for valid input.
isset()
is not sufficient because – as has been noted already – it considers an empty string to be a valid value.! empty()
is not sufficient either because it rejects '0', which could be a valid value.Using isset()
combined with an equality check against an empty string is the bare minimum that you need to verify that an incoming parameter has a value without creating false negatives:
if( isset($_GET['gender']) and ($_GET['gender'] != '') )
{
...
}
But by "bare minimum", I mean exactly that. All the above code does is determine whether there is some value for $_GET['gender']
. It does not determine whether the value for $_GET['gender']
is valid (e.g., one of ("Male", "Female",
"FileNotFound"
)
).
For that, see Josh Davis's answer.
In my project I managed to use GridLayout and results are very stable, with no flickering and with a perfectly working vertical scrollbar.
First I created a JPanel for the settings; in my case it is a grid with a row for each parameter and two columns: left column is for labels and right column is for components. I believe your case is similar.
JPanel yourSettingsPanel = new JPanel();
yourSettingsPanel.setLayout(new GridLayout(numberOfParams, 2));
I then populate this panel by iterating on my parameters and alternating between adding a JLabel and adding a component.
for (int i = 0; i < numberOfParams; ++i) {
yourSettingsPanel.add(labels[i]);
yourSettingsPanel.add(components[i]);
}
To prevent yourSettingsPanel from extending to the entire container I first wrap it in the north region of a dummy panel, that I called northOnlyPanel.
JPanel northOnlyPanel = new JPanel();
northOnlyPanel.setLayout(new BorderLayout());
northOnlyPanel.add(yourSettingsPanel, BorderLayout.NORTH);
Finally I wrap the northOnlyPanel in a JScrollPane, which should behave nicely pretty much anywhere.
JScrollPane scroll = new JScrollPane(northOnlyPanel,
JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
Most likely you want to display this JScrollPane extended inside a JFrame; you can add it to a BorderLayout JFrame, in the CENTER region:
window.add(scroll, BorderLayout.CENTER);
In my case I put it on the left column of a GridLayout(1, 2) panel, and I use the right column to display contextual help for each parameter.
JTextArea help = new JTextArea();
help.setLineWrap(true);
help.setWrapStyleWord(true);
help.setEditable(false);
JPanel split = new JPanel();
split.setLayout(new GridLayout(1, 2));
split.add(scroll);
split.add(help);
if you want to fill all the column:
update 'column' set 'info' where keyID!=0;
To compare local repository with remote one, simply use the below syntax:
git diff @{upstream}
Swift 5+:
let globalPoint = aView.superview?.convert(aView.frame.origin, to: nil)
All mentioned comments above are great, sharing the path that worked with me for this Blacklist file that need to be edited:
"Your project name\node_modules\metro-bundler\src" File name "blacklist.js"
I wanted to show how powerful it can be aside from just checking "-lt".
Example: I used it to calculate time differences take from Windows event view Application log:
Get the difference between the two date times:
PS> $Obj = ((get-date "10/22/2020 12:51:1") - (get-date "10/22/2020 12:20:1 "))
Object created:
PS> $Obj
Days : 0
Hours : 0
Minutes : 31
Seconds : 0
Milliseconds : 0
Ticks : 18600000000
TotalDays : 0.0215277777777778
TotalHours : 0.516666666666667
TotalMinutes : 31
TotalSeconds : 1860
TotalMilliseconds : 1860000
Access an item directly:
PS> $Obj.Minutes
31
If the array is a global, static, or automatic variable (int array[10];
), then sizeof(array)/sizeof(array[0])
works.
If it is a dynamically allocated array (int* array = malloc(sizeof(int)*10);
) or passed as a function argument (void f(int array[])
), then you cannot find its size at run-time. You will have to store the size somewhere.
Note that sizeof(array)/sizeof(array[0])
compiles just fine even for the second case, but it will silently produce the wrong result.
I had a problem where it did not allow me to insert it even after setting the IDENTITY_INSERT ON.
The problem was that i did not specify the column names and for some reason it did not like it.
INSERT INTO tbl Values(vals)
So basically do the full INSERT INTO tbl(cols) Values(vals)
Seem no solutions fix the problem:
$(".anima-area").on('click', function (e) {
return false; //return true;
});
$(".anima-area").on('click', function (e) {
e.preventDefault();
});
$(".anima-area").click(function (r) {
e.preventDefault();
});
$(".anima-area").click(function () {
return false; //return true;
});
Bootstrap button always maintain th pressed status and block all .click code. If i remove .click function button comeback to work good.
In Mycase
In mongodb version 2.6.11 default databse directory is /var/lib/mongodb/
$ sudo chown -R id -u
/var/lib/mongodb/
$ sudo chown -R id -u
/var/lib/mongodb/mongod.lock
$ sudo /etc/init.d/mongod stop
$ sudo /etc/init.d/mongod start