I had problems with the other suggestions because I want to sometimes return values from my methods. If you try to use MethodInvoker with return values it doesn't seem to like it. So the solution I use is like this (very happy to hear a way to make this more succinct - I'm using c#.net 2.0):
// Create delegates for the different return types needed.
private delegate void VoidDelegate();
private delegate Boolean ReturnBooleanDelegate();
private delegate Hashtable ReturnHashtableDelegate();
// Now use the delegates and the delegate() keyword to create
// an anonymous method as required
// Here a case where there's no value returned:
public void SetTitle(string title)
{
myWindow.Invoke(new VoidDelegate(delegate()
{
myWindow.Text = title;
}));
}
// Here's an example of a value being returned
public Hashtable CurrentlyLoadedDocs()
{
return (Hashtable)myWindow.Invoke(new ReturnHashtableDelegate(delegate()
{
return myWindow.CurrentlyLoadedDocs;
}));
}
In C# 5.0, this problem is fixed and you can close over loop variables and get the results you expect.
The language specification says:
8.8.4 The foreach statement
(...)
A foreach statement of the form
foreach (V v in x) embedded-statement
is then expanded to:
{ E e = ((C)(x)).GetEnumerator(); try { while (e.MoveNext()) { V v = (V)(T)e.Current; embedded-statement } } finally { … // Dispose e } }
(...)
The placement of
v
inside the while loop is important for how it is captured by any anonymous function occurring in the embedded-statement. For example:int[] values = { 7, 9, 13 }; Action f = null; foreach (var value in values) { if (f == null) f = () => Console.WriteLine("First value: " + value); } f();
If
v
was declared outside of the while loop, it would be shared among all iterations, and its value after the for loop would be the final value,13
, which is what the invocation off
would print. Instead, because each iteration has its own variablev
, the one captured byf
in the first iteration will continue to hold the value7
, which is what will be printed. (Note: earlier versions of C# declaredv
outside of the while loop.)
You can use numpy.recfromcsv(filename)
: the types of each column will be automatically determined (as if you use np.genfromtxt()
with dtype=None
), and by default delimiter=","
. It's basically a shortcut for np.genfromtxt(filename, delimiter=",", dtype=None)
that Pierre GM pointed at in his answer.
I have a code that works and use the term calculated, I'm not on postgresSQL pure tho we run on PADB
here is how it's used
create table some_table as
select category,
txn_type,
indiv_id,
accum_trip_flag,
max(first_true_origin) as true_origin,
max(first_true_dest ) as true_destination,
max(id) as id,
count(id) as tkts_cnt,
(case when calculated tkts_cnt=1 then 1 else 0 end) as one_way
from some_rando_table
group by 1,2,3,4 ;
There can be one more reason for such behavior - you delete current working directory.
For example:
# in terminal #1
cd /home/user/myJavaApp
# in terminal #2
rm -rf /home/user/myJavaApp
# in terminal #1
java -jar myJar.jar
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.
Below code may helps you for display application link of google play sore in mobile version.
For Application link :
Uri uri = Uri.parse("market://details?id=" + mContext.getPackageName());
Intent myAppLinkToMarket = new Intent(Intent.ACTION_VIEW, uri);
try {
startActivity(myAppLinkToMarket);
} catch (ActivityNotFoundException e) {
//the device hasn't installed Google Play
Toast.makeText(Setting.this, "You don't have Google Play installed", Toast.LENGTH_LONG).show();
}
For Developer link :
Uri uri = Uri.parse("market://search?q=pub:" + YourDeveloperName);
Intent myAppLinkToMarket = new Intent(Intent.ACTION_VIEW, uri);
try {
startActivity(myAppLinkToMarket);
} catch (ActivityNotFoundException e) {
//the device hasn't installed Google Play
Toast.makeText(Settings.this, "You don't have Google Play installed", Toast.LENGTH_LONG).show();
}
GSON has a builder that takes a Reader object: fromJson(Reader json, Class classOfT).
This means you can create a Reader from a URL and then pass it to Gson to consume the stream and do the deserialisation.
Only three lines of relevant code.
import java.io.InputStreamReader;
import java.net.URL;
import java.util.Map;
import com.google.gson.Gson;
public class GsonFetchNetworkJson {
public static void main(String[] ignored) throws Exception {
URL url = new URL("https://httpbin.org/get?color=red&shape=oval");
InputStreamReader reader = new InputStreamReader(url.openStream());
MyDto dto = new Gson().fromJson(reader, MyDto.class);
// using the deserialized object
System.out.println(dto.headers);
System.out.println(dto.args);
System.out.println(dto.origin);
System.out.println(dto.url);
}
private class MyDto {
Map<String, String> headers;
Map<String, String> args;
String origin;
String url;
}
}
If you happen to get a 403 error code with an endpoint which otherwise works fine (e.g. with
curl
or other clients) then a possible cause could be that the endpoint expects aUser-Agent
header and by default Java URLConnection is not setting it. An easy fix is to add at the top of the file e.g.System.setProperty("http.agent", "Netscape 1.0");
.
use toUpperCase() or toLowerCase() method of String class.
This question already has the answer for defining function pointers, however they can get very messy, especially if you are going to be passing them around your application. To avoid this unpleasantness I would recommend that you typedef the function pointer into something more readable. For example.
typedef void (*functiontype)();
Declares a function that returns void and takes no arguments. To create a function pointer to this type you can now do:
void dosomething() { }
functiontype func = &dosomething;
func();
For a function that returns an int and takes a char you would do
typedef int (*functiontype2)(char);
and to use it
int dosomethingwithchar(char a) { return 1; }
functiontype2 func2 = &dosomethingwithchar
int result = func2('a');
There are libraries that can help with turning function pointers into nice readable types. The boost function library is great and is well worth the effort!
boost::function<int (char a)> functiontype2;
is so much nicer than the above.
My Stored Procedure Requires 2 Parameters and I needed my function to return a datatable here is 100% working code
Please make sure that your procedure return some rows
Public Shared Function Get_BillDetails(AccountNumber As String) As DataTable
Try
Connection.Connect()
debug.print("Look up account number " & AccountNumber)
Dim DP As New SqlDataAdapter("EXEC SP_GET_ACCOUNT_PAYABLES_GROUP '" & AccountNumber & "' , '" & 08/28/2013 &"'", connection.Con)
Dim DST As New DataSet
DP.Fill(DST)
Return DST.Tables(0)
Catch ex As Exception
Return Nothing
End Try
End Function
Just to add to the answers, App Server Apache Geronimo 3.0 uses Tomcat 7 as the web server, and in that environment the file server.xml is located at
<%GERONIMO_HOME%>/var/catalina/server.xml
.
The configuration does take effect even when the Geronimo Console at Application Server->WebServer->TomcatWebConnector->maxPostSize
still displays 2097152 (the default value)
Here you go:
<html>_x000D_
<head>_x000D_
<title>Cols</title>_x000D_
<style>_x000D_
#left {_x000D_
width: 200px;_x000D_
float: left;_x000D_
}_x000D_
#right {_x000D_
margin-left: 200px;_x000D_
/* Change this to whatever the width of your left column is*/_x000D_
}_x000D_
.clear {_x000D_
clear: both;_x000D_
}_x000D_
</style>_x000D_
</head>_x000D_
_x000D_
<body>_x000D_
<div id="container">_x000D_
<div id="left">_x000D_
Hello_x000D_
</div>_x000D_
<div id="right">_x000D_
<div style="background-color: red; height: 10px;">Hello</div>_x000D_
</div>_x000D_
<div class="clear"></div>_x000D_
</div>_x000D_
</body>_x000D_
_x000D_
</html>
_x000D_
See it in action here: http://jsfiddle.net/FVLMX/
Personally, I'd roll my own. You can use strtok, but you need to take care with doing so (particularly if you're removing leading characters) that you know what memory is what.
Getting rid of trailing spaces is easy, and pretty safe, as you can just put a 0 in over the top of the last space, counting back from the end. Getting rid of leading spaces means moving things around. If you want to do it in place (probably sensible) you can just keep shifting everything back one character until there's no leading space. Or, to be more efficient, you could find the index of the first non-space character, and shift everything back by that number. Or, you could just use a pointer to the first non-space character (but then you need to be careful in the same way as you do with strtok).
don't give this in file input value="123".
$(document).ready(function(){
var img = $('#uploadPicture').val();
});
Just echo the javascript out inside the if function
<form name="testForm" id="testForm" method="POST" >
<input type="submit" name="btn" value="submit" autofocus onclick="return true;"/>
</form>
<?php
if(isset($_POST['btn'])){
echo "
<script type=\"text/javascript\">
var e = document.getElementById('testForm'); e.action='test.php'; e.submit();
</script>
";
}
?>
Short explanation looks like:
If you having troubles with interpreting results you could try BM.Sense results analysis service
Try xcorr
, it's a built-in function in MATLAB for cross-correlation:
c = xcorr(A_1, A_2);
However, note that it requires the Signal Processing Toolbox installed. If not, you can look into the corrcoef
command instead.
There are a lot of jQuery plugins available for this
Thickbox Examples
For a single image
- Create a link element ()
- Give the link a class attribute with a value of thickbox (class="thickbox")
- Provide a path in the href attribute to an image file (.jpg .jpeg .png .gif .bmp)
Collections.sort(listFiles, new Comparator<File>() {
public int compare(File f1, File f2) {
return Long.compare(f1.lastModified(), f2.lastModified());
}
});
where listFiles
is the collection of all files in ArrayList
The following code example written in Java will allow you to execute any command on a foreign computer through SSH from within a java program. You will need to include the com.jcraft.jsch jar file.
/*
* SSHManager
*
* @author cabbott
* @version 1.0
*/
package cabbott.net;
import com.jcraft.jsch.*;
import java.io.IOException;
import java.io.InputStream;
import java.util.logging.Level;
import java.util.logging.Logger;
public class SSHManager
{
private static final Logger LOGGER =
Logger.getLogger(SSHManager.class.getName());
private JSch jschSSHChannel;
private String strUserName;
private String strConnectionIP;
private int intConnectionPort;
private String strPassword;
private Session sesConnection;
private int intTimeOut;
private void doCommonConstructorActions(String userName,
String password, String connectionIP, String knownHostsFileName)
{
jschSSHChannel = new JSch();
try
{
jschSSHChannel.setKnownHosts(knownHostsFileName);
}
catch(JSchException jschX)
{
logError(jschX.getMessage());
}
strUserName = userName;
strPassword = password;
strConnectionIP = connectionIP;
}
public SSHManager(String userName, String password,
String connectionIP, String knownHostsFileName)
{
doCommonConstructorActions(userName, password,
connectionIP, knownHostsFileName);
intConnectionPort = 22;
intTimeOut = 60000;
}
public SSHManager(String userName, String password, String connectionIP,
String knownHostsFileName, int connectionPort)
{
doCommonConstructorActions(userName, password, connectionIP,
knownHostsFileName);
intConnectionPort = connectionPort;
intTimeOut = 60000;
}
public SSHManager(String userName, String password, String connectionIP,
String knownHostsFileName, int connectionPort, int timeOutMilliseconds)
{
doCommonConstructorActions(userName, password, connectionIP,
knownHostsFileName);
intConnectionPort = connectionPort;
intTimeOut = timeOutMilliseconds;
}
public String connect()
{
String errorMessage = null;
try
{
sesConnection = jschSSHChannel.getSession(strUserName,
strConnectionIP, intConnectionPort);
sesConnection.setPassword(strPassword);
// UNCOMMENT THIS FOR TESTING PURPOSES, BUT DO NOT USE IN PRODUCTION
// sesConnection.setConfig("StrictHostKeyChecking", "no");
sesConnection.connect(intTimeOut);
}
catch(JSchException jschX)
{
errorMessage = jschX.getMessage();
}
return errorMessage;
}
private String logError(String errorMessage)
{
if(errorMessage != null)
{
LOGGER.log(Level.SEVERE, "{0}:{1} - {2}",
new Object[]{strConnectionIP, intConnectionPort, errorMessage});
}
return errorMessage;
}
private String logWarning(String warnMessage)
{
if(warnMessage != null)
{
LOGGER.log(Level.WARNING, "{0}:{1} - {2}",
new Object[]{strConnectionIP, intConnectionPort, warnMessage});
}
return warnMessage;
}
public String sendCommand(String command)
{
StringBuilder outputBuffer = new StringBuilder();
try
{
Channel channel = sesConnection.openChannel("exec");
((ChannelExec)channel).setCommand(command);
InputStream commandOutput = channel.getInputStream();
channel.connect();
int readByte = commandOutput.read();
while(readByte != 0xffffffff)
{
outputBuffer.append((char)readByte);
readByte = commandOutput.read();
}
channel.disconnect();
}
catch(IOException ioX)
{
logWarning(ioX.getMessage());
return null;
}
catch(JSchException jschX)
{
logWarning(jschX.getMessage());
return null;
}
return outputBuffer.toString();
}
public void close()
{
sesConnection.disconnect();
}
}
For testing.
/**
* Test of sendCommand method, of class SSHManager.
*/
@Test
public void testSendCommand()
{
System.out.println("sendCommand");
/**
* YOU MUST CHANGE THE FOLLOWING
* FILE_NAME: A FILE IN THE DIRECTORY
* USER: LOGIN USER NAME
* PASSWORD: PASSWORD FOR THAT USER
* HOST: IP ADDRESS OF THE SSH SERVER
**/
String command = "ls FILE_NAME";
String userName = "USER";
String password = "PASSWORD";
String connectionIP = "HOST";
SSHManager instance = new SSHManager(userName, password, connectionIP, "");
String errorMessage = instance.connect();
if(errorMessage != null)
{
System.out.println(errorMessage);
fail();
}
String expResult = "FILE_NAME\n";
// call sendCommand for each command and the output
//(without prompts) is returned
String result = instance.sendCommand(command);
// close only after all commands are sent
instance.close();
assertEquals(expResult, result);
}
Is this what you are looking for? Here is a fiddle demo.
The layout is based on percentage, colors are for clarity. If the content column overflows, a scrollbar should appear.
body, html, .container-fluid {
height: 100%;
}
.navbar {
width:100%;
background:yellow;
}
.article-tree {
height:100%;
width: 25%;
float:left;
background: pink;
}
.content-area {
overflow: auto;
height: 100%;
background:orange;
}
.footer {
background: red;
width:100%;
height: 20px;
}
Better yet, consider sp_getapplock
which is designed for this. Or use SET LOCK_TIMEOUT
Otherwise, you'd have to do something with sys.dm_tran_locks
which I'd use only for DBA stuff: not for user defined concurrency.
You are using the same connection for the DataReader
and the ExecuteNonQuery
. This is not supported, according to MSDN:
Note that while a DataReader is open, the Connection is in use exclusively by that DataReader. You cannot execute any commands for the Connection, including creating another DataReader, until the original DataReader is closed.
Updated 2018: link to MSDN
Check out the example from enable-cors.org:
In your ExpressJS app on node.js, do the following with your routes:
app.all('/', function(req, res, next) { res.header("Access-Control-Allow-Origin", "*"); res.header("Access-Control-Allow-Headers", "X-Requested-With"); next(); }); app.get('/', function(req, res, next) { // Handle the get for this route }); app.post('/', function(req, res, next) { // Handle the post for this route });
The first call (app.all
) should be made before all the other routes in your app (or at least the ones you want to be CORS enabled).
[Edit]
If you want the headers to show up for static files as well, try this (make sure it's before the call to use(express.static())
:
app.use(function(req, res, next) {
res.header("Access-Control-Allow-Origin", "*");
res.header("Access-Control-Allow-Headers", "X-Requested-With");
next();
});
I tested this with your code, and got the headers on assets from the public
directory:
var express = require('express')
, app = express.createServer();
app.configure(function () {
app.use(express.methodOverride());
app.use(express.bodyParser());
app.use(function(req, res, next) {
res.header("Access-Control-Allow-Origin", "*");
res.header("Access-Control-Allow-Headers", "X-Requested-With");
next();
});
app.use(app.router);
});
app.configure('development', function () {
app.use(express.static(__dirname + '/public'));
app.use(express.errorHandler({ dumpExceptions: true, showStack: true }));
});
app.configure('production', function () {
app.use(express.static(__dirname + '/public'));
app.use(express.errorHandler());
});
app.listen(8888);
console.log('express running at http://localhost:%d', 8888);
You could, of course, package the function up into a module so you can do something like
// cors.js
module.exports = function() {
return function(req, res, next) {
res.header("Access-Control-Allow-Origin", "*");
res.header("Access-Control-Allow-Headers", "X-Requested-With");
next();
};
}
// server.js
cors = require('./cors');
app.use(cors());
There is many way to do this.
1. Using MediaQuery : Its return fullscreen of your device including appbar,toolbar
Container(
width: MediaQuery.of(context).size.width * 0.50,
height: MediaQuery.of(context).size.height*0.50,
color: Colors.blueAccent[400],
)
2. Using Expanded : You can set width/height in ratio
Container(
height: MediaQuery.of(context).size.height * 0.50,
child: Row(
children: <Widget>[
Expanded(
flex: 70,
child: Container(
color: Colors.lightBlue[400],
),
),
Expanded(
flex: 30,
child: Container(
color: Colors.deepPurple[800],
),
)
],
),
)
3. Others Like Flexible and AspectRatio and FractionallySizedBox
There are a couple of approaches here.
If you want to perform a case-insensitive check for just this instance, do something like the following.
if (referrer.toLowerCase().indexOf("Ral".toLowerCase()) == -1) {
...
Alternatively, if you're performing this check regularly, you can add a new indexOf()
-like method to String
, but make it case insensitive.
String.prototype.indexOfInsensitive = function (s, b) {
return this.toLowerCase().indexOf(s.toLowerCase(), b);
}
// Then invoke it
if (referrer.indexOfInsensitive("Ral") == -1) { ...
Not totally related, but you can also check for both undefined
AND empty
(for e.g my_variable:
) variable. (NOTE: only works with ansible version > 1.9, see: link)
- name: Create user
user:
name: "{{ ((my_variable == None) | ternary('default_value', my_variable)) \
if my_variable is defined else 'default_value' }}"
You can use overflow:auto;
You can also control the x or y axis individually with the overflow-x
and overflow-y
properties.
Example:
.content {overflow:auto;}
.content {overflow-y:auto;}
.content {overflow-x:auto;}
If it's GNU diff then you should just be able to point it at the two directories and use the -r option.
Otherwise, try using
for i in $(\ls -d ./dir1/*); do diff ${i} dir2; done
N.B. As pointed out by Dennis in the comments section, you don't actually need to do the command substitution on the ls. I've been doing this for so long that I'm pretty much doing this on autopilot and substituting the command I need to get my list of files for comparison.
Also I forgot to add that I do '\ls' to temporarily disable my alias of ls to GNU ls so that I lose the colour formatting info from the listing returned by GNU ls.
Try the Jquery Hotkeys plugin instead - it'll do everything you require.
jQuery Hotkeys is a plug-in that lets you easily add and remove handlers for keyboard events anywhere in your code supporting almost any key combination.
This plugin is based off of the plugin by Tzury Bar Yochay: jQuery.hotkeys
The syntax is as follows:
$(expression).bind(types, keys, handler); $(expression).unbind(types, handler);
$(document).bind('keydown', 'ctrl+a', fn);
// e.g. replace '$' sign with 'EUR'
// $('input.foo').bind('keyup', '$', function(){
// this.value = this.value.replace('$', 'EUR'); });
this is output of this program
Scanner s=new Scanner (System.in);
int row, elem, col;
Systm.out.println("Enter Element to insert");
elem = s.nextInt();
System.out.println("Enter row");
row=s.nextInt();
System.out.println("Enter row");
col=s.nextInt();
for (int c=row-1; c < row; c++)
{
for (d = col-1 ; d < col ; d++)
array[c][d] = elem;
}
for(c = 0; c < size; c++)
{
for (d = 0 ; d < size ; d++)
System.out.print( array[c] [d] +" ");
System.out.println();
}
You need something like this: https://github.com/axkibe/lsyncd It is a tool which combines rsync and inotify - the former is a tool that mirrors, with the correct options set, a directory to the last bit. The latter tells the kernel to notify a program of changes to a directory ot file. It says:
It aggregates and combines events for a few seconds and then spawns one (or more) process(es) to synchronize the changes.
But - according to Digital Ocean at https://www.digitalocean.com/community/tutorials/how-to-mirror-local-and-remote-directories-on-a-vps-with-lsyncd - it ought to be in the Ubuntu repository!
I have similar requirements, and this tool, which I have yet to try, seems suitable for the task.
Are you working with a @Service
too? Because if you are, then you can @Autowired
your PersonRepository
to the @Service
and then in the service just invoke the Name
class and use the form that @CuriosMind... proposed:
@Query(select p from Person p where p.forename = :forename and p.surname = :surname)
User findByForenameAndSurname(@Param("surname") String lastname,
@Param("forename") String firstname);
}
and when invoking the method from the repository in the service, you can then pass those parameters.
There is a simple answer to this question which uses a dictionary of types to look up a lambda function. Here is how it might be used:
var ts = new TypeSwitch()
.Case((int x) => Console.WriteLine("int"))
.Case((bool x) => Console.WriteLine("bool"))
.Case((string x) => Console.WriteLine("string"));
ts.Switch(42);
ts.Switch(false);
ts.Switch("hello");
There is also a generalized solution to this problem in terms of pattern matching (both types and run-time checked conditions):
var getRentPrice = new PatternMatcher<int>()
.Case<MotorCycle>(bike => 100 + bike.Cylinders * 10)
.Case<Bicycle>(30)
.Case<Car>(car => car.EngineType == EngineType.Diesel, car => 220 + car.Doors * 20)
.Case<Car>(car => car.EngineType == EngineType.Gasoline, car => 200 + car.Doors * 20)
.Default(0);
var vehicles = new object[] {
new Car { EngineType = EngineType.Diesel, Doors = 2 },
new Car { EngineType = EngineType.Diesel, Doors = 4 },
new Car { EngineType = EngineType.Gasoline, Doors = 3 },
new Car { EngineType = EngineType.Gasoline, Doors = 5 },
new Bicycle(),
new MotorCycle { Cylinders = 2 },
new MotorCycle { Cylinders = 3 },
};
foreach (var v in vehicles)
{
Console.WriteLine("Vehicle of type {0} costs {1} to rent", v.GetType(), getRentPrice.Match(v));
}
I would check:
The simplest starting point is probably to try to connect manually from the client machine using telnet or Putty. If that succeeds, then the problem is in your client code. If it doesn't, you need to work out why it hasn't. Wireshark may help you on this front.
How host name verification should be done is defined in RFC 6125, which is quite recent and generalises the practice to all protocols, and replaces RFC 2818, which was specific to HTTPS. (I'm not even sure Java 7 uses RFC 6125, which might be too recent for this.)
From RFC 2818 (Section 3.1):
If a subjectAltName extension of type dNSName is present, that MUST be used as the identity. Otherwise, the (most specific) Common Name field in the Subject field of the certificate MUST be used. Although the use of the Common Name is existing practice, it is deprecated and Certification Authorities are encouraged to use the dNSName instead.
[...]
In some cases, the URI is specified as an IP address rather than a hostname. In this case, the iPAddress subjectAltName must be present in the certificate and must exactly match the IP in the URI.
Essentially, the specific problem you have comes from the fact that you're using IP addresses in your CN and not a host name. Some browsers might work because not all tools follow this specification strictly, in particular because "most specific" in RFC 2818 isn't clearly defined (see discussions in RFC 6215).
If you're using keytool
, as of Java 7, keytool
has an option to include a Subject Alternative Name (see the table in the documentation for -ext
): you could use -ext san=dns:www.example.com
or -ext san=ip:10.0.0.1
.
EDIT:
You can request a SAN in OpenSSL by changing openssl.cnf
(it will pick the copy in the current directory if you don't want to edit the global configuration, as far as I remember, or you can choose an explicit location using the OPENSSL_CONF
environment variable).
Set the following options (find the appropriate sections within brackets first):
[req]
req_extensions = v3_req
[ v3_req ]
subjectAltName=IP:10.0.0.1
# or subjectAltName=DNS:www.example.com
There's also a nice trick to use an environment variable for this (rather in than fixing it in a configuration file) here: http://www.crsr.net/Notes/SSL.html
const isChrome = /Chrome/.test(navigator.userAgent)
const isFirefox = /Firefox/.test(navigator.userAgent)
the solution for this can be as easy as :
$db_conect->set_charset('utf8');
I just wanted to follow up on something I found working with Python 2.7 on Centos 6. Adding the package_data or data_files as mentioned above did not work for me. I added a MANIFEST.IN with the files I wanted which put the non-python files into the tarball, but did not install them on the target machine via RPM.
In the end, I was able to get the files into my solution using the "options" in the setup/setuptools. The option files let you modify various sections of the spec file from setup.py. As follows.
from setuptools import setup
setup(
name='theProjectName',
version='1',
packages=['thePackage'],
url='',
license='',
author='me',
author_email='[email protected]',
description='',
options={'bdist_rpm': {'install_script': 'filewithinstallcommands'}},
)
file - MANIFEST.in:
include license.txt
file - filewithinstallcommands:
mkdir -p $RPM_BUILD_ROOT/pathtoinstall/
#this line installs your python files
python setup.py install -O1 --root=$RPM_BUILD_ROOT --record=INSTALLED_FILES
#install license.txt into /pathtoinstall folder
install -m 700 license.txt $RPM_BUILD_ROOT/pathtoinstall/
echo /pathtoinstall/license.txt >> INSTALLED_FILES
//If url is something.domain.com this returns -> domain.com
function getDomain() {
return window.location.hostname.replace(/([a-z]+.)/,"");
}
Differences in SOAP versions
Both SOAP Version 1.1 and SOAP Version 1.2 are World Wide Web Consortium (W3C) standards. Web services can be deployed that support not only SOAP 1.1 but also support SOAP 1.2. Some changes from SOAP 1.1 that were made to the SOAP 1.2 specification are significant, while other changes are minor.
The SOAP 1.2 specification introduces several changes to SOAP 1.1. This information is not intended to be an in-depth description of all the new or changed features for SOAP 1.1 and SOAP 1.2. Instead, this information highlights some of the more important differences between the current versions of SOAP.
The changes to the SOAP 1.2 specification that are significant include the following updates: SOAP 1.1 is based on XML 1.0. SOAP 1.2 is based on XML Information Set (XML Infoset). The XML information set (infoset) provides a way to describe the XML document with XSD schema. However, the infoset does not necessarily serialize the document with XML 1.0 serialization on which SOAP 1.1 is based.. This new way to describe the XML document helps reveal other serialization formats, such as a binary protocol format. You can use the binary protocol format to compact the message into a compact format, where some of the verbose tagging information might not be required.
In SOAP 1.2 , you can use the specification of a binding to an underlying protocol to determine which XML serialization is used in the underlying protocol data units. The HTTP binding that is specified in SOAP 1.2 - Part 2 uses XML 1.0 as the serialization of the SOAP message infoset.
SOAP 1.2 provides the ability to officially define transport protocols, other than using HTTP, as long as the vendor conforms to the binding framework that is defined in SOAP 1.2. While HTTP is ubiquitous, it is not as reliable as other transports including TCP/IP and MQ. SOAP 1.2 provides a more specific definition of the SOAP processing model that removes many of the ambiguities that might lead to interoperability errors in the absence of the Web Services-Interoperability (WS-I) profiles. The goal is to significantly reduce the chances of interoperability issues between different vendors that use SOAP 1.2 implementations. SOAP with Attachments API for Java (SAAJ) can also stand alone as a simple mechanism to issue SOAP requests. A major change to the SAAJ specification is the ability to represent SOAP 1.1 messages and the additional SOAP 1.2 formatted messages. For example, SAAJ Version 1.3 introduces a new set of constants and methods that are more conducive to SOAP 1.2 (such as getRole(), getRelay()) on SOAP header elements. There are also additional methods on the factories for SAAJ to create appropriate SOAP 1.1 or SOAP 1.2 messages. The XML namespaces for the envelope and encoding schemas have changed for SOAP 1.2. These changes distinguish SOAP processors from SOAP 1.1 and SOAP 1.2 messages and supports changes in the SOAP schema, without affecting existing implementations. Java Architecture for XML Web Services (JAX-WS) introduces the ability to support both SOAP 1.1 and SOAP 1.2. Because JAX-RPC introduced a requirement to manipulate a SOAP message as it traversed through the run time, there became a need to represent this message in its appropriate SOAP context. In JAX-WS, a number of additional enhancements result from the support for SAAJ 1.3.
There is not difine POST AND GET method for particular android....but all here is differance
GET The GET method appends name/value pairs to the URL, allowing you to retrieve a resource representation. The big issue with this is that the length of a URL is limited (roughly 3000 char) resulting in data loss should you have to much stuff in the form on your page, so this method only works if there is a small number parameters.
What does this mean for me? Basically this renders the GET method worthless to most developers in most situations. Here is another way of looking at it: the URL could be truncated (and most likely will be give today's data-centric sites) if the form uses a large number of parameters, or if the parameters contain large amounts of data. Also, parameters passed on the URL are visible in the address field of the browser (YIKES!!!) not the best place for any kind of sensitive (or even non-sensitive) data to be shown because you are just begging the curious user to mess with it.
POST The alternative to the GET method is the POST method. This method packages the name/value pairs inside the body of the HTTP request, which makes for a cleaner URL and imposes no size limitations on the forms output, basically its a no-brainer on which one to use. POST is also more secure but certainly not safe. Although HTTP fully supports CRUD, HTML 4 only supports issuing GET and POST requests through its various elements. This limitation has held Web applications back from making full use of HTTP, and to work around it, most applications overload POST to take care of everything but resource retrieval.
I think best way is to use string stream. simple and quick !!!
#include <fstream>
#include <iostream>
#include <sstream> //std::stringstream
int main() {
std::ifstream inFile;
inFile.open("inFileName"); //open the input file
std::stringstream strStream;
strStream << inFile.rdbuf(); //read the file
std::string str = strStream.str(); //str holds the content of the file
std::cout << str << "\n"; //you can do anything with the string!!!
}
I found this post when I started wondering about the easiest way to implement
rot13
into Python myself. My goals were:
This meets all three of those requirements. That being said, I'm sure it's not winning any code golf competitions.
def rot13(string):
CLEAR = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz'
ROT13 = 'NOPQRSTUVWXYZABCDEFGHIJKLMnopqrstuvwxyzabcdefghijklm'
TABLE = {x: y for x, y in zip(CLEAR, ROT13)}
return ''.join(map(lambda x: TABLE.get(x, x), string))
if __name__ == '__main__':
CLEAR = 'Hello, World!'
R13 = 'Uryyb, Jbeyq!'
r13 = rot13(CLEAR)
assert r13 == R13
clear = rot13(r13)
assert clear == CLEAR
This works by creating a lookup table and simply returning the original character for any character not found in the lookup table.
I got to worrying about someone wanting to use this to encrypt an arbitrarily-large file (say, a few gigabytes of text). I don't know why they'd want to do this, but what if they did? So I rewrote it as a generator. Again, this has been tested in both Python 2.7.6 and 3.3.
def rot13(clear):
CLEAR = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz'
ROT13 = 'NOPQRSTUVWXYZABCDEFGHIJKLMnopqrstuvwxyzabcdefghijklm'
TABLE = {x: y for x, y in zip(CLEAR, ROT13)}
for c in clear:
yield TABLE.get(c, c)
if __name__ == '__main__':
CLEAR = 'Hello, World!'
R13 = 'Uryyb, Jbeyq!'
r13 = ''.join(rot13(CLEAR))
assert r13 == R13
clear = ''.join(rot13(r13))
assert clear == CLEAR
Okay,
TFS2008 Power Tools do not have a find-in-files function. "The Find in Source Control tools provide the ability to locate files and folders in source control by the item’s status or with a wildcard expression."
There is a Windows program with this functionality posted on CodePlex. I just installed and tested this and it works well.
The most convenient way to pass data between activities is by passing intents. In the first activity from where you want to send data, you should add code,
String str = "My Data"; //Data you want to send
Intent intent = new Intent(FirstActivity.this, SecondActivity.class);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.putExtra("name",str); //Here you will add the data into intent to pass bw activites
v.getContext().startActivity(intent);
You should also import
import android.content.Intent;
Then in the next Acitvity(SecondActivity), you should retrieve the data from the intent using the following code.
String name = this.getIntent().getStringExtra("name");
Only use git rm --cached [file]
to remove a file from the index.
git reset <filename>
can be used to remove added files from the index given the files are never committed.
% git add First.txt
% git ls-files
First.txt
% git commit -m "First"
% git ls-files
First.txt
% git reset First.txt
% git ls-files
First.txt
NOTE: git reset First.txt
has no effect on index after the commit.
Which brings me to the topic of git restore --staged <file>
. It can be used to (presumably after the first commit) remove added files from the index given the files are never committed.
% git add Second.txt
% git status
On branch master
Changes to be committed:
(use "git restore --staged <file>..." to unstage)
new file: Second.txt
% git ls-files
First.txt
Second.txt
% git restore --staged Second.txt
% git ls-files
First.txt
% git add Second.txt
% git commit -m "Second"
% git status
On branch master
nothing to commit, working tree clean
% git ls-files
First.txt
Second.txt
Desktop/Test% git restore --staged .
Desktop/Test% git ls-files
First.txt
Second.txt
Desktop/Test% git reset .
Desktop/Test% git ls-files
First.txt
Second.txt
% git rm --cached -r .
rm 'First.txt'
rm 'Second.txt'
% git ls-files
tl;dr Look at last 15 lines. If you don't want to be confused with first commit, second commit, before commit, after commit.... always use git rm --cached [file]
If your URL is:
http://127.0.0.1:8080/binding/
Update the below property in the index.html
<base href="/binding/">
In short, you need to check the locations of the files.
For money: decimal
. It costs a little more memory, but doesn't have rounding troubles like double
sometimes has.
All C++ compilers have one serious performance problem to deal with. Compiling C++ code is a long, slow process.
Compiling headers included on top of C++ files is a very long, slow process. Compiling the huge header structures that form part of Windows API and other large API libraries is a very, very long, slow process. To have to do it over, and over, and over for every single Cpp source file is a death knell.
This is not unique to Windows but an old problem faced by all compilers that have to compile against a large API like Windows.
The Microsoft compiler can ameliorate this problem with a simple trick called precompiled headers. The trick is pretty slick: although every CPP file can potentially and legally give a sligthly different meaning to the chain of header files included on top of each Cpp file (by things like having different macros #define'd in advance of the includes, or by including the headers in different order), that is most often not the case. Most of the time, we have dozens or hundreds of included files, but they all are intended to have the same meaning for all the Cpp files being compiled in your application.
The compiler can make huge time savings if it doesn't have to start to compile every Cpp file plus its dozens of includes literally from scratch every time.
The trick consists of designating a special header file as the starting point of all compilation chains, the so called 'precompiled header' file, which is commonly a file named stdafx.h simply for historical reasons.
Simply list all your big huge headers for your APIs in your stdafx.h file, in the appropriate order, and then start each of your CPP files at the very top with an #include "stdafx.h"
, before any meaningful content (just about the only thing allowed before is comments).
Under those conditions, instead of starting from scratch, the compiler starts compiling from the already saved results of compiling everything in stdafx.h
.
I don't believe that this trick is unique to Microsoft compilers, nor do I think it was an original development.
For Microsoft compilers, the setting that controls the use of precompiled headers is controlled by a command line argument to the compiler: /Yu "stdafx.h"
. As you can imagine, the use of the stdafx.h
file name is simply a convention; you can change the name if you so wish.
In Visual Studio 2010, this setting is controlled from the GUI via Right-clicking on a CPP Project, selecting 'Properties' and navigating to "Configuration Properties\C/C++\Precompiled Headers". For other versions of Visual Studio, the location in the GUI will be different.
Note that if you disable precompiled headers (or run your project through a tool that doesn't support them), it doesn't make your program illegal; it simply means that your tool will compile everything from scratch every time.
If you are creating a library with no Windows dependencies, you can easily comment out or remove #include
s from the stdafx.h
file. There is no need to remove the file per se, but clearly you may do so as well, by disabling the precompile header setting above.
Trigger function from jQuery could be your answer.
jQuery docs says: Any event handlers attached with .on() or one of its shortcut methods are triggered when the corresponding event occurs. They can be fired manually, however, with the .trigger() method. A call to .trigger() executes the handlers in the same order they would be if the event were triggered naturally by the user
Thus best one line solution should be:
$('.selector_class').trigger('click');
//or
$('#foo').click();
You can see the error information from:
Magento/var/report
Most of the time it is cause by broken database connection especially at local server, when one forget to start XAMPP or WAMPP server.
Do j.append(l)
instead of j[k] = l
and avoid k
at all.
I assume you're using bash or dash. Would this work?
shopt -s extglob # sets extended pattern matching options in the bash shell
cp $(ls -laR !(subdir/file1|file2|subdir2/file3)) destination
Doing an ls excluding the files you don't want, and using that as the first argument for cp
Sometimes you may want to let the server know that the user is leaving the page. This is useful, for example, to clean up unsaved images stored temporarily on the server, to mark that user as "offline", or to log when they are done their session.
Historically, you would send an AJAX request in the beforeunload
function, however this has two problems. If you send an asynchronous request, there is no guarantee that the request would be executed correctly. If you send a synchronous request, it is more reliable, but the browser would hang until the request has finished. If this is a slow request, this would be a huge inconvenience to the user.
Later came navigator.sendBeacon()
. By using the sendBeacon()
method, the data is transmitted asynchronously to the web server when the User Agent has an opportunity to do so, without delaying the unload or affecting the performance of the next navigation. This solves all of the problems with submission of analytics data: the data is sent reliably, it's sent asynchronously, and it doesn't impact the loading of the next page.
Unless you are targeting only desktop users, sendBeacon()
should not be used with unload
or beforeunload
since these do not reliably fire on mobile devices. Instead you can listen to the visibilitychange
event. This event will fire every time your page is visible and the user switches tabs, switches apps, goes to the home screen, answers a phone call, navigates away from the page, closes the tab, refreshes, etc.
Here is an example of its usage:
document.addEventListener('visibilitychange', function() {
if (document.visibilityState == 'hidden') {
navigator.sendBeacon("/log.php", analyticsData);
}
});
When the user returns to the page, document.visibilityState
will change to 'visible'
, so you can also handle that event as well.
sendBeacon()
is supported in:
It is NOT currently supported in:
Here is a polyfill for sendBeacon() in case you need to add support for unsupported browsers. If the method is not available in the browser, it will send a synchronous AJAX request instead.
Update:
It might be worth mentioning that sendBeacon()
only sends POST
requests. If you need to send a request using any other method, an alternative would be to use the fetch API
with the keepalive
flag set to true
, which causes it to behave the same way as sendBeacon()
. Browser support for the fetch API is about the same.
fetch(url, {
method: ...,
body: ...,
headers: ...,
credentials: 'include',
mode: 'no-cors',
keepalive: true,
})
I'm not have an explain on how it works, but works, and being cowboy coder is that all I need.
System.Drawing.Rectangle rect = Screen.GetWorkingArea(this);
this.MaximizedBounds = Screen.GetWorkingArea(this);
this.WindowState = FormWindowState.Maximized;
You can try to get the list of all elements with class = "content"
by using find_elements_by_class_name:
a = driver.find_elements_by_class_name("content")
Then you can click on the link that you are looking for.
To remove from all tables, (add this to the head or external style sheet)
<style type="text/css">
table td{
border:none;
}
</style>
Write the column name in between DOUBLE quote as in "columnName".
If the error message shows a different character case than what you wrote, it is very likely that your sql client performed an automatic case conversion for you. Use double quote to bypass that. (This works on Squirrell Client 3.0).
I have come up with a slighly different approach that should work on cross platforms
http://www.jqui.net/tips-tricks/fixing-the-auto-scale-on-mobile-devices/
So far I have tested in on
Samsun galaxy 2
iPhone 4
@media screen and (max-width:800px) {
This is a massive lip forward with mobile development ...
In the following line
<form method="post" action="display()">
the action should be the name of your script and you should call the function, Something like this
<form method="post" action="yourFileName.php">
<input type="text" name="studentname">
<input type="submit" value="click" name="submit"> <!-- assign a name for the button -->
</form>
<?php
function display()
{
echo "hello ".$_POST["studentname"];
}
if(isset($_POST['submit']))
{
display();
}
?>
@AndreSmiley 's code of line worked for me.
only modification required is.
-XX:MaxPermSize=256m
"m" means MB.
Actually my application is kinda huge so i was advised to make it 1024m for performance.
This works for me, I only need first numbers in string:
TO_NUMBER(regexp_substr(h.HIST_OBSE, '\.*[[:digit:]]+\.*[[:digit:]]*'))
the field had the following string: "(43 Paginas) REGLAS DE PARTICIPACION"
.
result field: 43
If you put "\n" in a string in the xml file, it's taken as "\\n"
So , I did :
text = text.Replace("\\\n", "\n"); ( text is taken from resX file)
And then I get a line jump on the screen
I've been using keyup on a number field, but today I noticed in chrome the input has up/down buttons to increase/decrease the value which aren't recognized by keyup.
My solution is to use keyup and change together:
(keyup)="unitsChanged[i] = true" (change)="unitsChanged[i] = true"
Initial tests indicate this works fine, will post back if any bugs found after further testing.
There are two ways to split strings over multiple lines:
All lines in C can be split into multiple lines using \.
Plain C:
char *my_string = "Line 1 \
Line 2";
Objective-C:
NSString *my_string = @"Line1 \
Line2";
There's a better approach that works just for strings.
Plain C:
char *my_string = "Line 1 "
"Line 2";
Objective-C:
NSString *my_string = @"Line1 "
"Line2"; // the second @ is optional
The second approach is better, because there isn't a lot of whitespace included. For a SQL query however, both are possible.
NOTE: With a #define, you have to add an extra '\' to concatenate the two strings:
Plain C:
#define kMyString "Line 1"\
"Line 2"
Hanselman had a really interesting podcast with a blind developer recently.
I do not like referring to the number, the sybolic name is much more expressive and avoid having to add a comment that could become obsolete over time.
So I'd rather do:
#pylint: disable-msg=too-many-arguments
And I would also recommend to not leave it dangling there: it will stay active until the file ends or it is disabled, whichever comes first.
So better doing:
#pylint: disable-msg=too-many-arguments
code_which_would_trigger_the_msg
#pylint: enable-msg=too-many-arguments
I would also recommend enabling/disabling one single warning/error per line.
I prefer:
def g(x):
y0 = x + 1
y1 = x * 3
y2 = y0 ** y3
return {'y0':y0, 'y1':y1 ,'y2':y2 }
It seems everything else is just extra code to do the same thing.
There isn't a magic bullet solution for what you're looking for, unfortunately. Here's what you can do:
create an Interface class using this command in the Visual Studio Command Prompt window:
wsdl.exe yourFile.wsdl /l:CS /serverInterface
Use VB or CS for your language of choice. This will create a new .cs
or .vb
file.
Create a new .NET Web Service project. Import Existing File into your project - the file that was created in the step above.
In your .asmx.cs
file in Code-View, modify your class as such:
public class MyWebService : System.Web.Services.WebService, IMyWsdlInterface
{
[WebMethod]
public string GetSomeString()
{
//you'll have to write your own business logic
return "Hello SOAP World";
}
}
A non-static member function must be called with an object. That is, it always implicitly passes "this" pointer as its argument.
Because your std::function
signature specifies that your function doesn't take any arguments (<void(void)>
), you must bind the first (and the only) argument.
std::function<void(void)> f = std::bind(&Foo::doSomething, this);
If you want to bind a function with parameters, you need to specify placeholders:
using namespace std::placeholders;
std::function<void(int,int)> f = std::bind(&Foo::doSomethingArgs, this, std::placeholders::_1, std::placeholders::_2);
Or, if your compiler supports C++11 lambdas:
std::function<void(int,int)> f = [=](int a, int b) {
this->doSomethingArgs(a, b);
}
(I don't have a C++11 capable compiler at hand right now, so I can't check this one.)
there are packages that can simulate interfaces .
you can use es6-interface
TheNewIdiot's answer successfully explains the problem and the reason why you can't send attributes in request through a redirect. Possible solutions:
Using forwarding. This will enable that request attributes could be passed to the view and you can use them in form of ServletRequest#getAttribute
or by using Expression Language and JSTL. Short example (reusing TheNewIdiot's answer] code).
Controller (your servlet)
request.setAttribute("message", "Hello world");
RequestDispatcher dispatcher = servletContext().getRequestDispatcher(url);
dispatcher.forward(request, response);
View (your JSP)
Using scriptlets:
<%
out.println(request.getAttribute("message"));
%>
This is just for information purposes. Scriptlets usage must be avoided: How to avoid Java code in JSP files?. Below there is the example using EL and JSTL.
<c:out value="${message}" />
If you can't use forwarding (because you don't like it or you don't feel it that way or because you must use a redirect) then an option would be saving a message as a session attribute, then redirect to your view, recover the session attribute in your view and remove it from session. Remember to always have your user session with only relevant data. Code example
Controller
//if request is not from HttpServletRequest, you should do a typecast before
HttpSession session = request.getSession(false);
//save message in session
session.setAttribute("helloWorld", "Hello world");
response.sendRedirect("/content/test.jsp");
View
Again, showing this using scriptlets and then EL + JSTL:
<%
out.println(session.getAttribute("message"));
session.removeAttribute("message");
%>
<c:out value="${sessionScope.message}" />
<c:remove var="message" scope="session" />
HttpClient is not supported any more in sdk 23. You have to use URLConnection or downgrade to sdk 22 (compile 'com.android.support:appcompat-v7:22.2.0')
If you need sdk 23, add this to your gradle:
In dependencies add:
compile 'org.apache.httpcomponents:httpcore:4.4.1'
compile 'org.apache.httpcomponents:httpclient:4.5'
and also add this
android {
useLibrary 'org.apache.http.legacy'
}
Once you have defined your chosen commands, you can simply drag and drop the saved file into the Lib folder in your python program files.
>>> import mymodule
>>> mymodule.myfunc()
String fileName = url.substring( url.lastIndexOf('/')+1, url.length() );
String fileNameWithoutExtn = fileName.substring(0, fileName.lastIndexOf('.'));
Just test if the array is empty.
$.getJSON(url,function(json){
if ( json.length == 0 ) {
console.log("NO DATA!")
}
});
I use three flags to resolve the problem:
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP|
Intent.FLAG_ACTIVITY_CLEAR_TASK |
Intent.FLAG_ACTIVITY_NEW_TASK);
Go to prompt command and type "adb devices". If it is empty, then make sure you allowed for "MTP Transfer" or similar and you enabled debugging on your phone.
To enable debugging, follow this tutorial: https://www.kingoapp.com/root-tutorials/how-to-enable-usb-debugging-mode-on-android.htm
Then type "adb devices" again. If a device is listed in there, then it should work now.
Script for loading of custom .env
file:
Add the following lines to /config/environment.rb
, between the require
line, and the Application.initialize
line:
# Load the app's custom environment variables here, so that they are loaded before environments/*.rb
app_environment_variables = File.join(Rails.root, 'config', 'local_environment.env')
if File.exists?(app_environment_variables)
lines = File.readlines(app_environment_variables)
lines.each do |line|
line.chomp!
next if line.empty? or line[0] == '#'
parts = line.partition '='
raise "Wrong line: #{line} in #{app_environment_variables}" if parts.last.empty?
ENV[parts.first] = parts.last
end
end
And config/local_environment.env
(you will want to .gitignore
it) will look like:
# This is ignored comment
DATABASE_URL=mysql2://user:[email protected]:3307/database
RACK_ENV=development
(Based on solution of @user664833)
After going down a bit of a bit of a rabbit hole trying to follow the answers to this question (maybe because I had to do this in a visual studio project), I found the easier path was to
Cut and paste the file(s) I no longer want to track into a temporary location
Commit the "deletion" of those files
Commit a modification of the .gitignore
to exclude the files I had temporarily moved
Move the files back into the folder.
I found this to be the most straight forward way to go about it (at least in a visual studio, or I would assume other IDE heave based environment like Android Studio), without accidentally shooting myself in the foot with a pretty pervasive git rm -rf --cached .
, after which the visual studio project I was working on didn't load.
if value of the Key is coming as String and you want to convert it to JSONObject,
First take your key.value into a String variable like
String data = yourResponse.yourKey;
then convert into JSONArray
JSONObject myObj=new JSONObject(data);
The selected answer did not work in my Web API application. I had to use
System.Web.HttpRuntime.AppDomainAppPath
I added <preference name="android-minSdkVersion" value="19" />
to my conf.xml
and the build was successful.
Basically, you get connections in the Sleep state when :
So, you generally end up with many processes in a Sleep state when you have a lot of PHP processes that stay connected, without actually doing anything on the database-side.
A basic idea, so : make sure you don't have PHP processes that run for too long -- or force them to disconnect as soon as they don't need to access the database anymore.
Another thing, that I often see when there is some load on the server :
A solution that can help is to reduce the time your queries take -- optimizing the longest ones.
Yes, the Session object might be null, but only in certain circumstances, which you will only rarely run into:
If you only have code in pages, you won't run into this. Most of my ASP .NET code uses Session without checking for null repeatedly. It is, however, something to think about if you are developing an IHttpModule or otherwise is down in the grittier details of ASP .NET.
In answer to the comment: Whether or not session state is available depends on whether the AcquireRequestState event has run for the request. This is where the session state module does it's work by reading the session cookie and finding the appropiate set of session variables for you.
AcquireRequestState runs before control is handed to your Page. So if you are calling other functionality, including static classes, from your page, you should be fine.
If you have some classes doing initialization logic during startup, for example on the Application_Start event or by using a static constructor, Session state might not be available. It all boils down to whether there is a current request and AcquireRequestState has been run.
Also, should the client have disabled cookies, the Session object will still be available - but on the next request, the user will return with a new empty Session. This is because the client is given a Session statebag if he does not have one already. If the client does not transport the session cookie, we have no way of identifying the client as the same, so he will be handed a new session again and again.
I faced the same problem,
I added android support design dependencies to the app level build.gradle
Add following:
implementation 'com.android.support:design:27.1.0'
in build.gradle. Now its working for me.
mode con:cols=[whatever you want] lines=[whatever you want].
The unit is the number of characters that fit in the command prompt, eg.
mode con:cols=80 lines=100
will make the command prompt 80 ASCII chars of width and 100 of height
First, I thought:
"...In Microsoft SQL Server the
SELECT...INTO
automatically creates the new table whereas Oracle seems to require you to manually create it before executing theSELECT...INTO
statement..."
But after manually generating a table, it still did not work, still showing the "missing keyword" error.
So I gave up this time and solved it by first manually creating the table, then using the "classic" SELECT
statement:
INSERT INTO assignment_20081120 SELECT * FROM assignment;
Which worked as expected. If anyone come up with an explanaition on how to use the SELECT...INTO
in a correct way, I would be happy!
This will convert Hello World to 48656c6c6f20576f726c64 and print it.
#include <iostream>
#include <cstring>
using namespace std;
int main()
{
char hello[20]="Hello World";
for(unsigned int i=0; i<strlen(hello); i++)
cout << hex << (int) hello[i];
return 0;
}
The WPF Font Cache service shares font data between WPF applications. The first WPF application you run starts this service if the service is not already running. If you are using Windows Vista, you can set the "Windows Presentation Foundation (WPF) Font Cache 3.0.0.0" service from "Manual" (the default) to "Automatic (Delayed Start)" to reduce the initial start-up time of WPF applications.
There's no harm in disabling it, but WPF apps tend to start faster and load fonts faster with it running.
It is supposed to be a performance optimization. The fact that it is not in your case makes me suspect that perhaps your font cache is corrupted. To clear it, follow these steps:
C:\Documents and Settings\LocalService\Local Settings\Application Data\
folder.It looks like you just hard-coded the row and column; otherwise, a couple of small tweaks, and I think you're there:
Dim sh As Worksheet
Dim rw As Range
Dim RowCount As Integer
RowCount = 0
Set sh = ActiveSheet
For Each rw In sh.Rows
If sh.Cells(rw.Row, 1).Value = "" Then
Exit For
End If
RowCount = RowCount + 1
Next rw
MsgBox (RowCount)
The itertools module has lots of great stuff in it. So if a standard slice (as used by Levon) does not do what you want, then try the islice
function:
from itertools import islice
l = [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20]
iterator = islice(l, 10)
for item in iterator:
print item
This post helped me understand concerns.
# app/models/trader.rb
class Trader
include Shared::Schedule
end
# app/models/concerns/shared/schedule.rb
module Shared::Schedule
extend ActiveSupport::Concern
...
end
You need to set postion:relative of outer DIV and position:absolute of inner div.
Try this. Here is the Demo
#one
{
background-color: #EEE;
margin: 62px 258px;
padding: 5px;
width: 200px;
position: relative;
}
#two
{
background-color: #F00;
display: inline-block;
height: 30px;
position: absolute;
width: 100px;
top:10px;
}?
Try the following:
UPDATE TableName SET ValueName=@parameterName WHERE
IdName=@ParameterIdName
Attention: this is an extremely rough and oversimplified sketch, assuming the simplest possible HTTP request (no HTTPS, no HTTP2, no extras), simplest possible DNS, no proxies, single-stack IPv4, one HTTP request only, a simple HTTP server on the other end, and no problems in any step. This is, for most contemporary intents and purposes, an unrealistic scenario; all of these are far more complex in actual use, and the tech stack has become an order of magnitude more complicated since this was written. With this in mind, the following timeline is still somewhat valid:
Again, discussion of each of these points have filled countless pages; take this only as a summary, abridged for the sake of clarity. Also, there are many other things happening in parallel to this (processing typed-in address, speculative prefetching, adding page to browser history, displaying progress to user, notifying plugins and extensions, rendering the page while it's downloading, pipelining, connection tracking for keep-alive, cookie management, checking for malicious content etc.) - and the whole operation gets an order of magnitude more complex with HTTPS (certificates and ciphers and pinning, oh my!).
I have used the following procedure.
Procedure to install the apk files in Android Emulator(AVD):
Check your installed directory(ex: C:\Program Files (x86)\Android\android-sdk\platform-tools), whether it has the adb.exe or not). If not present in this folder, then download the attachment here, extract the zip files. You will get adb files, copy and paste those three files inside tools folder
Run AVD manager from C:\Program Files (x86)\Android\android-sdk and start the Android Emulator.
Copy and paste the apk file inside the C:\Program Files (x86)\Android\android-sdk\platform-tools
Go to Start -> Run -> cmd
Type cd “C:\Program Files (x86)\Android\android-sdk\platform-tools”
Type adb install example.apk
After getting success command
Go to Application icon in Android emulator, we can see the your application
Identified this solution while reading this thread. Figured id post this for the next guy possibly.
When dealing with Laravel migration file from a package, I Ran into this issue.
My old value was
$table->increments('id');
My new
$table->integer('id')->autoIncrement();
<select id='bookcategory' class="form-control" required="">
<option value="" disabled="disabled">Category</option>
<option value="1">LITERATURE & FICTION</option>
<option value="2">NON FICTION</option>
<option value="3">ACADEMIC</option>
<option value="4">CHILDREN & TEENS</option>
</select>
HTML form validation can be performed automatically by the browser.
Try the above code:
The rest all will be done automatically, no need to create any js functions just this dropdown and a submit button.
.a
files are created with the ar
utility, and they are libraries. To use it with gcc
, collect all .a files
in a lib/
folder and then link with -L lib/
and -l<name of specific library>
.
Collection of all .a files into lib/
is optional. Doing so makes for better looking directories with nice separation of code and libraries, IMHO.
Note that sort() operates on the array in place, so you only need to call
sort($a);
doSomething($a);
This will not work;
$a = sort($a);
doSomething($a);
If you have virtualmin try to comment out these lines in your apache configuration in /etc/apache2/sites-available
#RemoveHandler .php
#RemoveHandler .php7.0
#php_admin_value engine Off
WORKING SOLUTION
Let me add to this old post, a working solution I used to use that works in probably 80% or more of all browsers both new and old.
The solution is complex yet simple. The first step is to make use of CSS and guise the input file type with "under-elements" that show through as it has an opacity of 0. The next step is to use JavaScript to update its label as needed.
HTML The ID's are simply inserted if you wanted a quick way to access a specific element, the classes however, are a must as they relate to the CSS that sets this whole process up
<div class="file-input wrapper">
<input id="inpFile0" type="file" class="file-input control" />
<div class="file-input content">
<label id="inpFileOutput0" for="inpFileButton" class="file-input output">Click Here</label>
<input id="inpFileButton0" type="button" class="file-input button" value="Select File" />
</div>
</div>
CSS Keep in mind, coloring and font-styles and such are totally your preference, if you use this basic CSS, you can always use after-end mark up to style as you please, this is shown in the jsFiddle listed at the end.
.file-test-area {
border: 1px solid;
margin: .5em;
padding: 1em;
}
.file-input {
cursor: pointer !important;
}
.file-input * {
cursor: pointer !important;
display: inline-block;
}
.file-input.wrapper {
display: inline-block;
font-size: 14px;
height: auto;
overflow: hidden;
position: relative;
width: auto;
}
.file-input.control {
-moz-opacity:0 ;
filter:alpha(opacity: 0);
opacity: 0;
height: 100%;
position: absolute;
text-align: right;
width: 100%;
z-index: 2;
}
.file-input.content {
position: relative;
top: 0px;
left: 0px;
z-index: 1;
}
.file-input.output {
background-color: #FFC;
font-size: .8em;
padding: .2em .2em .2em .4em;
text-align: center;
width: 10em;
}
.file-input.button {
border: none;
font-weight: bold;
margin-left: .25em;
padding: 0 .25em;
}
JavaScript Pure and true, however, some OLDER (retired) browsers may still have trouble with it (like Netscrape 2!)
var inp = document.getElementsByTagName('input');
for (var i=0;i<inp.length;i++) {
if (inp[i].type != 'file') continue;
inp[i].relatedElement = inp[i].parentNode.getElementsByTagName('label')[0];
inp[i].onchange /*= inp[i].onmouseout*/ = function () {
this.relatedElement.innerHTML = this.value;
};
};
function printTable()
{
local -r delimiter="${1}"
local -r data="$(removeEmptyLines "${2}")"
if [[ "${delimiter}" != '' && "$(isEmptyString "${data}")" = 'false' ]]
then
local -r numberOfLines="$(wc -l <<< "${data}")"
if [[ "${numberOfLines}" -gt '0' ]]
then
local table=''
local i=1
for ((i = 1; i <= "${numberOfLines}"; i = i + 1))
do
local line=''
line="$(sed "${i}q;d" <<< "${data}")"
local numberOfColumns='0'
numberOfColumns="$(awk -F "${delimiter}" '{print NF}' <<< "${line}")"
# Add Line Delimiter
if [[ "${i}" -eq '1' ]]
then
table="${table}$(printf '%s#+' "$(repeatString '#+' "${numberOfColumns}")")"
fi
# Add Header Or Body
table="${table}\n"
local j=1
for ((j = 1; j <= "${numberOfColumns}"; j = j + 1))
do
table="${table}$(printf '#| %s' "$(cut -d "${delimiter}" -f "${j}" <<< "${line}")")"
done
table="${table}#|\n"
# Add Line Delimiter
if [[ "${i}" -eq '1' ]] || [[ "${numberOfLines}" -gt '1' && "${i}" -eq "${numberOfLines}" ]]
then
table="${table}$(printf '%s#+' "$(repeatString '#+' "${numberOfColumns}")")"
fi
done
if [[ "$(isEmptyString "${table}")" = 'false' ]]
then
echo -e "${table}" | column -s '#' -t | awk '/^\+/{gsub(" ", "-", $0)}1'
fi
fi
fi
}
function removeEmptyLines()
{
local -r content="${1}"
echo -e "${content}" | sed '/^\s*$/d'
}
function repeatString()
{
local -r string="${1}"
local -r numberToRepeat="${2}"
if [[ "${string}" != '' && "${numberToRepeat}" =~ ^[1-9][0-9]*$ ]]
then
local -r result="$(printf "%${numberToRepeat}s")"
echo -e "${result// /${string}}"
fi
}
function isEmptyString()
{
local -r string="${1}"
if [[ "$(trimString "${string}")" = '' ]]
then
echo 'true' && return 0
fi
echo 'false' && return 1
}
function trimString()
{
local -r string="${1}"
sed 's,^[[:blank:]]*,,' <<< "${string}" | sed 's,[[:blank:]]*$,,'
}
SAMPLE RUNS
$ cat data-1.txt
HEADER 1,HEADER 2,HEADER 3
$ printTable ',' "$(cat data-1.txt)"
+-----------+-----------+-----------+
| HEADER 1 | HEADER 2 | HEADER 3 |
+-----------+-----------+-----------+
$ cat data-2.txt
HEADER 1,HEADER 2,HEADER 3
data 1,data 2,data 3
$ printTable ',' "$(cat data-2.txt)"
+-----------+-----------+-----------+
| HEADER 1 | HEADER 2 | HEADER 3 |
+-----------+-----------+-----------+
| data 1 | data 2 | data 3 |
+-----------+-----------+-----------+
$ cat data-3.txt
HEADER 1,HEADER 2,HEADER 3
data 1,data 2,data 3
data 4,data 5,data 6
$ printTable ',' "$(cat data-3.txt)"
+-----------+-----------+-----------+
| HEADER 1 | HEADER 2 | HEADER 3 |
+-----------+-----------+-----------+
| data 1 | data 2 | data 3 |
| data 4 | data 5 | data 6 |
+-----------+-----------+-----------+
$ cat data-4.txt
HEADER
data
$ printTable ',' "$(cat data-4.txt)"
+---------+
| HEADER |
+---------+
| data |
+---------+
$ cat data-5.txt
HEADER
data 1
data 2
$ printTable ',' "$(cat data-5.txt)"
+---------+
| HEADER |
+---------+
| data 1 |
| data 2 |
+---------+
REF LIB at: https://github.com/gdbtek/linux-cookbooks/blob/master/libraries/util.bash
The scope <scope>provided</scope>
gives you an opportunity to tell that the jar would be available at runtime, so do not bundle it. It does not mean that you do not need it at compile time, hence maven would try to download that.
Now I think, the below maven artifact do not exist at all. I tries searching google, but not able to find. Hence you are getting this issue.
Change groupId
to <groupId>net.sourceforge.ant4x</groupId>
to get the latest jar.
<dependency>
<groupId>net.sourceforge.ant4x</groupId>
<artifactId>ant4x</artifactId>
<version>${net.sourceforge.ant4x-version}</version>
<scope>provided</scope>
</dependency>
Another solution for this problem is:
Where http://localhost/repo is your local repo URL:
<repositories>
<repository>
<id>wmc-central</id>
<url>http://localhost/repo</url>
</repository>
<-- Other repository config ... -->
</repositories>
If you want to have text aligned to preceding list item but avoid having "big" line break, use two spaces at the end of a list item and indent the text with some spaces.
Source: (dots are spaces ;-) of course)
1.·item1··
····This is some text
2.item2
Result:
Here are the steps to pull a specific or any branch,
1.clone the master(you need to provide username and password)
git clone <url>
2. the above command will clone the repository and you will be master branch now
git checkout <branch which is present in the remote repository(origin)>
3. The above command will checkout to the branch you want to pull and will be set to automatically track that branch
4.If for some reason it does not work like that, after checking out to that branch in your local system, just run the below command
git pull origin <branch>
You have a selector ul
on line 252
which is setting list-style: square outside none
(a square bullet). You'll have to change it to list-style: none
or just remove the line.
If you only want to remove the bullets from that specific instance, you can use the specific selector for that list and its items as follows:
ul#groups-list.items-list { list-style: none }
You can see that your locks are pretty much working as you are using them, if you slow down the process and make them block a bit more. You had the right idea, where you surround critical pieces of code with the lock. Here is a small adjustment to your example to show you how each waits on the other to release the lock.
import threading
import time
import inspect
class Thread(threading.Thread):
def __init__(self, t, *args):
threading.Thread.__init__(self, target=t, args=args)
self.start()
count = 0
lock = threading.Lock()
def incre():
global count
caller = inspect.getouterframes(inspect.currentframe())[1][3]
print "Inside %s()" % caller
print "Acquiring lock"
with lock:
print "Lock Acquired"
count += 1
time.sleep(2)
def bye():
while count < 5:
incre()
def hello_there():
while count < 5:
incre()
def main():
hello = Thread(hello_there)
goodbye = Thread(bye)
if __name__ == '__main__':
main()
Sample output:
...
Inside hello_there()
Acquiring lock
Lock Acquired
Inside bye()
Acquiring lock
Lock Acquired
...
Addition to @Binary Nerd
If you are using Spark, use the following to get the Spark version:
spark-submit --version
or
Login to the Cloudera Manager and goto Hosts page then run inspect hosts in cluster
To rename the header without reassign df:
df.rename(columns=df.iloc[0], inplace = True)
To drop the row without reassign df:
df.drop(df.index[0], inplace = True)
If SSL support is not configurable in your site (ie. should be able to turn https on/off) - you can use the [RequireHttps] attribute on any controller / controller action you wish to secure.
Two issues:
You're passing the jQuery wrapper of the element into parseInt
, which isn't what you want, as parseInt
will call toString
on it and get back "[object Object]"
. You need to use val
or text
or something (depending on what the element is) to get the string you want.
You're not telling parseInt
what radix (number base) it should use, which puts you at risk of odd input giving you odd results when parseInt
guesses which radix to use.
Fix if the element is a form field:
// vvvvv-- use val to get the value
var test = parseInt($("#testid").val(), 10);
// ^^^^-- tell parseInt to use decimal (base 10)
Fix if the element is something else and you want to use the text within it:
// vvvvvv-- use text to get the text
var test = parseInt($("#testid").text(), 10);
// ^^^^-- tell parseInt to use decimal (base 10)
OPTIONS
method returns info about API (methods/content type)
HEAD
method returns info about resource (version/length/type)
Server response
OPTIONS
HTTP/1.1 200 OK
Allow: GET,HEAD,POST,OPTIONS,TRACE
Content-Type: text/html; charset=UTF-8
Date: Wed, 08 May 2013 10:24:43 GMT
Content-Length: 0
HEAD
HTTP/1.1 200 OK
Accept-Ranges: bytes
Content-Type: text/html; charset=UTF-8
Date: Wed, 08 May 2013 10:12:29 GMT
ETag: "780602-4f6-4db31b2978ec0"
Last-Modified: Thu, 25 Apr 2013 16:13:23 GMT
Content-Length: 1270
OPTIONS
Identifying which HTTP methods a resource supports, e.g. can we DELETE it or update it via a PUT?HEAD
Checking whether a resource has changed. This is useful when maintaining a cached version of a resourceHEAD
Retrieving metadata about the resource, e.g. its media type or its size, before making a possibly costly retrievalHEAD, OPTIONS
Testing whether a resource exists and is accessible. For example, validating user-submitted links in an application
Here is nice and concise article about how HEAD and OPTIONS fit into RESTful architecture.
This question already has great answers. I'm only adding my two cents because I landed here trying to find a solution to my own problem, which is very similar to the OP.
If you want to find the INDEX of the first item matching a criteria using generators, you can simply do:
next(index for index, value in enumerate(iterable) if condition)
I tried all the solutions above and in addition, those in related answers as well. Solutions including but not limited to passing the blob manually to a HTMLInputElement's file property, calling all the readAs* methods on FileReader, using a File instance as second argument for a FormData.append call, trying to get the blob data as a string by getting the values at URL.createObjectURL(myBlob) which turned out nasty and crashed my machine.
Now, if you happen to attempt those or more and still find you're unable to upload your blob, it could mean the problem is server-side. In my case, my blob exceeded the http://www.php.net/manual/en/ini.core.php#ini.upload-max-filesize and post_max_size limit in PHP.INI so the file was leaving the front end form but getting rejected by the server. You could either increase this value directly in PHP.INI or via .htaccess
You can find it inside the /config folder.
When you eject you get a message like:
Adding /config/webpack.config.dev.js to the project
Adding /config/webpack.config.prod.js to the project
Create custom TextWatcher subclass:
public class CustomWatcher implements TextWatcher {
private boolean mWasEdited = false;
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
@Override
public void afterTextChanged(Editable s) {
if (mWasEdited){
mWasEdited = false;
return;
}
// get entered value (if required)
String enteredValue = s.toString();
String newValue = "new value";
// don't get trap into infinite loop
mWasEdited = true;
// just replace entered value with whatever you want
s.replace(0, s.length(), newValue);
}
}
Set listener for your EditText:
mTargetEditText.addTextChangedListener(new CustomWatcher());
If you say window.location.reload(true)
the browser will skip the cache and reload the page from the server. window.location.reload(false)
will do the opposite.
Note: default
value for window.location.reload()
is false
My web host is stuck on version 5.1 of mysql so anyone like me that doesn't have the option of upgrading can follow these directions:
http://joegornick.com/2009/12/30/mysql-created-and-modified-date-fields/
You can write this
$filename = current(explode(".", $file));
These will return current element of array, if not used before.
Try this. Your markup:
<div id="MyId" runat="server">some content</div>
.. and in aspx.cs file:
protected void Page_Load(object sender, EventArgs e)
{
if (Session["someSessionVal"].ToString() == "some value")
{
MyId.Visible = true;
}
else
{
MyId.Visible = false;
}
}
In my example, serial number is managed according to the actions taken on each row using css. I used a form inside each row, and when new row created then the form will get reset.
/*auto increment/decrement the sr.no.*/_x000D_
body {_x000D_
counter-reset: section;_x000D_
}_x000D_
_x000D_
i.srno {_x000D_
counter-reset: subsection;_x000D_
}_x000D_
_x000D_
i.srno:before {_x000D_
counter-increment: section;_x000D_
content: counter(section);_x000D_
}_x000D_
/****/
_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>_x000D_
<script type='text/javascript'>_x000D_
$(document).ready(function () {_x000D_
$('#POITable').on('change', 'select.search_type', function (e) {_x000D_
var selectedval = $(this).val();_x000D_
$(this).closest('td').next().html(selectedval);_x000D_
});_x000D_
});_x000D_
</script>_x000D_
<table id="POITable" border="1">_x000D_
<tr>_x000D_
<th>Sl No</th>_x000D_
<th>Name</th>_x000D_
<th>Your Name</th>_x000D_
<th>Number</th>_x000D_
<th>Input</th>_x000D_
<th>Chars</th>_x000D_
<th>Action</th>_x000D_
</tr>_x000D_
<tr>_x000D_
<td><i class="srno"></i></td>_x000D_
<td>_x000D_
<select class="search_type" name="select_one">_x000D_
<option value="">Select</option>_x000D_
<option value="abc">abc</option>_x000D_
<option value="def">def</option>_x000D_
<option value="xyz">xyz</option>_x000D_
</select>_x000D_
</td>_x000D_
<td></td>_x000D_
<td>_x000D_
<select name="select_two" >_x000D_
<option value="">Select</option>_x000D_
<option value="123">123</option>_x000D_
<option value="456">456</option>_x000D_
<option value="789">789</option>_x000D_
</select>_x000D_
</td>_x000D_
_x000D_
<td><input type="text" size="8"/></td>_x000D_
<td>_x000D_
<select name="search_three[]" >_x000D_
<option value="">Select</option>_x000D_
<option value="one">1</option>_x000D_
<option value="two">2</option>_x000D_
<option value="three">3</option>_x000D_
</select>_x000D_
</td>_x000D_
<td><button type="button" onclick="deleteRow(this)">-</button><button type="button" onclick="insRow()">+</button></td>_x000D_
</tr>_x000D_
</table>_x000D_
_x000D_
<script type='text/javascript'>_x000D_
function deleteRow(row)_x000D_
{_x000D_
var i = row.parentNode.parentNode.rowIndex;_x000D_
document.getElementById('POITable').deleteRow(i);_x000D_
}_x000D_
function insRow()_x000D_
{_x000D_
var x = document.getElementById('POITable');_x000D_
var new_row = x.rows[1].cloneNode(true);_x000D_
var len = x.rows.length;_x000D_
//new_row.cells[0].innerHTML = len; //auto increment the srno_x000D_
var inp1 = new_row.cells[1].getElementsByTagName('select')[0];_x000D_
inp1.id += len;_x000D_
inp1.value = '';_x000D_
new_row.cells[2].innerHTML = '';_x000D_
new_row.cells[4].getElementsByTagName('input')[0].value = "";_x000D_
x.appendChild(new_row);_x000D_
}_x000D_
</script>
_x000D_
Hope this helps.
How about just using:
result = [VLOOKUP(DATA!AN2, DATA!AA9:AF20, 5, FALSE)]
Note the [ and ].
The display:table
family of CSS properties is mostly there so that HTML tables can be defined in terms of them. Because they're so intimately linked to a specific tag structure, they don't see much use beyond that.
If you were going to use these properties in your page, you would need a tag structure that closely mimicked that of tables, even though you weren't actually using the <table>
family of tags. A minimal version would be a single container element (display:table
), with direct children that can all be represented as rows (display:table-row
), which themselves have direct children that can all be represented as cells (display:table-cell
). There are other properties that let you mimic other tags in the table
family, but they require analogous structures in the HTML. Without this, it's going to be very hard (if not impossible) to make good use of these properties.
If X
and beta
do not have the same shape as the second term in the rhs of your last line (i.e. nsample
), then you will get this type of error. To add an array to a tuple of arrays, they all must be the same shape.
I would recommend looking at the numpy broadcasting rules.
(Updated for Spring 3.0)
I go with Spring MVC as well.
You need to download Spring from here
To configure your web-app to use Spring add the following servlet to your web.xml
<web-app>
<servlet>
<servlet-name>spring-dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>spring-dispatcher</servlet-name>
<url-pattern>/*</url-pattern>
</servlet-mapping>
</web-app>
You then need to create your Spring config file /WEB-INF/spring-dispatcher-servlet.xml
Your first version of this file can be as simple as:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<context:component-scan base-package="com.acme.foo" />
<mvc:annotation-driven />
</beans>
Spring will then automatically detect classes annotated with @Controller
A simple controller is then:
package com.acme.foo;
import java.util.logging.Logger;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
@Controller
@RequestMapping("/person")
public class PersonController {
Logger logger = Logger.getAnonymousLogger();
@RequestMapping(method = RequestMethod.GET)
public String setupForm(ModelMap model) {
model.addAttribute("person", new Person());
return "details.jsp";
}
@RequestMapping(method = RequestMethod.POST)
public String processForm(@ModelAttribute("person") Person person) {
logger.info(person.getId());
logger.info(person.getName());
logger.info(person.getSurname());
return "success.jsp";
}
}
And the details.jsp
<%@ taglib uri="http://www.springframework.org/tags/form" prefix="form"%>
<form:form commandName="person">
<table>
<tr>
<td>Id:</td>
<td><form:input path="id" /></td>
</tr>
<tr>
<td>Name:</td>
<td><form:input path="name" /></td>
</tr>
<tr>
<td>Surname:</td>
<td><form:input path="surname" /></td>
</tr>
<tr>
<td colspan="2"><input type="submit" value="Save Changes" /></td>
</tr>
</table>
</form:form>
This is just the tip of the iceberg with regards to what Spring can do...
Hope this helps.
Just a quick warning - if you want to test in Internet Explorer without removing all console.log()'s, you'll need to use Firebug Lite or you'll get some not particularly friendly errors.
(Or create your own console.log() which just returns false.)
ISO 8601 (MSDN datetime formats)
Console.WriteLine(DateTime.UtcNow.ToString("s") + "Z");
2009-11-13T10:39:35Z
The Z is there because
If the time is in UTC, add a 'Z' directly after the time without a space. 'Z' is the zone designator for the zero UTC offset. "09:30 UTC" is therefore represented as "09:30Z" or "0930Z". "14:45:15 UTC" would be "14:45:15Z" or "144515Z".
int hours = TimeZoneInfo.Local.BaseUtcOffset.Hours;
string offset = string.Format("{0}{1}",((hours >0)? "+" :""),hours.ToString("00"));
string isoformat = DateTime.Now.ToString("s") + offset;
Console.WriteLine(isoformat);
Two things to note: + or - is needed after the time but obviously + doesn't show on positive numbers. According to wikipedia the offset can be in +hh format or +hh:mm. I've kept to just hours.
As far as I know, RFC1123 (HTTP date, the "u" formatter) isn't meant to give time zone offsets. All times are intended to be GMT/UTC.
AJAX is a technique to do an XMLHttpRequest (out of band Http request) from a web page to the server and send/retrieve data to be used on the web page. AJAX stands for Asynchronous Javascript And XML. It uses javascript to construct an XMLHttpRequest, typically using different techniques on various browsers.
jQuery (website) is a javascript framework that makes working with the DOM easier by building lots of high level functionality that can be used to search and interact with the DOM. Part of the functionality of jQuery implements a high-level interface to do AJAX requests. jQuery implements this interface abstractly, shielding the developer from the complexity of multi-browser support in making the request.
<audio controls autoplay loop>
<source src="path/your_song.mp3" type="audio/ogg">
<embed src="path/your_song.mp3" autostart="true" loop="true" hidden="true">
</audio>
[ps. replace the "path/your_song.mp3" with the folder and the song title eg. "music/samplemusic.mp3" or "media/bgmusic.mp3" etc.
The following code works fine:
@using (Html.BeginForm("Upload", "Upload", FormMethod.Post,
new { enctype = "multipart/form-data" }))
{
@Html.ValidationSummary(true)
<fieldset>
Select a file <input type="file" name="file" />
<input type="submit" value="Upload" />
</fieldset>
}
and generates as expected:
<form action="/Upload/Upload" enctype="multipart/form-data" method="post">
<fieldset>
Select a file <input type="file" name="file" />
<input type="submit" value="Upload" />
</fieldset>
</form>
On the other hand if you are writing this code inside the context of other server side construct such as an if
or foreach
you should remove the @
before the using
. For example:
@if (SomeCondition)
{
using (Html.BeginForm("Upload", "Upload", FormMethod.Post,
new { enctype = "multipart/form-data" }))
{
@Html.ValidationSummary(true)
<fieldset>
Select a file <input type="file" name="file" />
<input type="submit" value="Upload" />
</fieldset>
}
}
As far as your server side code is concerned, here's how to proceed:
[HttpPost]
public ActionResult Upload(HttpPostedFileBase file)
{
if (file != null && file.ContentLength > 0)
{
var fileName = Path.GetFileName(file.FileName);
var path = Path.Combine(Server.MapPath("~/content/pics"), fileName);
file.SaveAs(path);
}
return RedirectToAction("Upload");
}
If you like Groovy syntax, you can use the Pimp-My-Library design pattern to bring it to Scala:
import java.io._
import scala.io._
class RichFile( file: File ) {
def text = Source.fromFile( file )(Codec.UTF8).mkString
def text_=( s: String ) {
val out = new PrintWriter( file , "UTF-8")
try{ out.print( s ) }
finally{ out.close }
}
}
object RichFile {
implicit def enrichFile( file: File ) = new RichFile( file )
}
It will work as expected:
scala> import RichFile.enrichFile
import RichFile.enrichFile
scala> val f = new File("/tmp/example.txt")
f: java.io.File = /tmp/example.txt
scala> f.text = "hello world"
scala> f.text
res1: String =
"hello world
It is possible. Have a look at JSch.addIdentity(...)
This allows you to use key either as byte array or to read it from file.
import com.jcraft.jsch.Channel;
import com.jcraft.jsch.ChannelSftp;
import com.jcraft.jsch.JSch;
import com.jcraft.jsch.Session;
public class UserAuthPubKey {
public static void main(String[] arg) {
try {
JSch jsch = new JSch();
String user = "tjill";
String host = "192.18.0.246";
int port = 10022;
String privateKey = ".ssh/id_rsa";
jsch.addIdentity(privateKey);
System.out.println("identity added ");
Session session = jsch.getSession(user, host, port);
System.out.println("session created.");
// disabling StrictHostKeyChecking may help to make connection but makes it insecure
// see http://stackoverflow.com/questions/30178936/jsch-sftp-security-with-session-setconfigstricthostkeychecking-no
//
// java.util.Properties config = new java.util.Properties();
// config.put("StrictHostKeyChecking", "no");
// session.setConfig(config);
session.connect();
System.out.println("session connected.....");
Channel channel = session.openChannel("sftp");
channel.setInputStream(System.in);
channel.setOutputStream(System.out);
channel.connect();
System.out.println("shell channel connected....");
ChannelSftp c = (ChannelSftp) channel;
String fileName = "test.txt";
c.put(fileName, "./in/");
c.exit();
System.out.println("done");
} catch (Exception e) {
System.err.println(e);
}
}
}
One simple way to get rid of the overwriting issue is to use File.AppendText
to append line at the end of the file as
void Main()
{
using (System.IO.StreamWriter sw = System.IO.File.AppendText("file.txt"))
{
string first = reader[0].ToString();
string second=image.ToString();
string csv = string.Format("{0},{1}\n", first, second);
sw.WriteLine(csv);
}
}
In JavaScript you declare variables or functions by using the keywords var, let or function. In TypeScript classes you declare class members or methods without these keywords followed by a colon and the type or interface of that class member.
It’s just syntax sugar, there is no difference between:
var el: HTMLElement = document.getElementById('content');
and:
var el = document.getElementById('content');
On the other hand, because you specify the type you get all the information of your HTMLElement object.
Since Python 3.5 you can unpack unlimited amount of list
s.
PEP 448 - Additional Unpacking Generalizations
So this will work:
a = ['1', '2', '3', '4']
b = ['5', '6']
function_that_needs_strings(*a, *b)
int intNumber = (int)uintNumber;
Depending on what kind of values you are expecting, you may want to check how big uintNumber is before doing the conversion. An int has a max value of about .5 of a uint.
$ php artisan route:list
+--------+--------------------------------+----------------------------+-- -----------------+----------------------------------------------------+--------- ---+
| Domain | Method | URI | Name | Action | Middleware |
+--------+--------------------------------+----------------------------+-------------------+----------------------------------------------------+------------+
| | GET|HEAD | / |
| | GET | campaign/showtakeup/{id} | showtakeup | App\Http\Controllers\campaignController@showtakeup | auth | |
routes.php
Route::get('campaign/showtakeup/{id}', ['uses' =>'campaignController@showtakeup'])->name('showtakeup');
campaign.showtakeup.blade.php
@foreach($campaign as $campaigns)
//route parameters; you may pass them as the second argument to the method:
<a href="{{route('showtakeup', ['id' => $campaigns->id])}}">{{ $campaigns->name }}</a>
@endforeach
Hope this solves your problem. Thanks
The full list of the 66 unreserved characters is in RFC3986, here: http://tools.ietf.org/html/rfc3986#section-2.3
This is any character in the following regex set:
[A-Za-z0-9_.\-~]
After spending some time on Serialization, I find that, we should not generate serialVersionUID
with some random value, we should give it a meaningful value.
Here is a details comment on this. I am coping the comment here.
Actually, you should not be "generating" serial version UIDs. It is a dumb "feature" that stems from the general misunderstanding of how that ID is used by Java. You should be giving these IDs meaningful, readable values, e.g. starting with 1L, and incrementing them each time you think the new version of the class should render all previous versions (that might be previously serialized) obsolete. All utilities that generate such IDs basically do what the JVM does when the ID is not defined: they generate the value based on the content of the class file, hence coming up with unreadable meaningless long integers. If you want each and every version of your class to be distinct (in the eyes of the JVM) then you should not even specify the serialVersionUID value isnce the JVM will produce one on the fly, and the value of each version of your class will be unique. The purpose of defining that value explicitly is to tell the serialization mechanism to treat different versions of the class that have the same SVUID as if they are the same, e.g. not to reject the older serialized versions. So, if you define the ID and never change it (and I assume that's what you do since you rely on the auto-generation, and you probably never re-generate your IDs) you are ensuring that all - even absolutely different - versions of your class will be considered the same by the serialization mechanism. Is that what you want? If not, and if you indeed want to have control over how your objects are recognized, you should be using simple values that you yourself can understand and easily update when you decide that the class has changed significantly. Having a 23-digit value does not help at all.
Hope this helps. Good luck.
There is a discussion about it here.
https://github.com/angular/angular.io/issues/2663
Alex J's answer is good but it no longer works with current Angular 4 as of July, 2017.
And this plunker link would demonstrate how to communicate between siblings using shared service and observable.
// Path relative to where the php file is or absolute server path
chdir($FilePath); // Comment this out if you are on the same folder
chown($FileName,465); //Insert an Invalid UserId to set to Nobody Owner; for instance 465
$do = unlink($FileName);
if($do=="1"){
echo "The file was deleted successfully.";
} else { echo "There was an error trying to delete the file."; }
Try this. Hope it helps.
Proper way to do it is to change the width on the online customizer here:
http://getbootstrap.com/customize/
download the recompiled source, overwrite the existing bootstrap dist dir, and reload (mind the browser cache!!!)
All your changes will be retained in the .json configuration file
To apply again the all the changes just upload the json file and you are ready to go
simple solution and work 100%
if (getActivity() == null || !isAdded()) return;
A quick update to Michael's excellent answer above.
For Rails 4.0+ you need to put your sort in a block like this:
class Book < ActiveRecord::Base
default_scope { order('created_at DESC') }
end
Notice that the order statement is placed in a block denoted by the curly braces.
They changed it because it was too easy to pass in something dynamic (like the current time). This removes the problem because the block is evaluated at runtime. If you don't use a block you'll get this error:
Support for calling #default_scope without a block is removed. For example instead of
default_scope where(color: 'red')
, please usedefault_scope { where(color: 'red') }
. (Alternatively you can just redefine self.default_scope.)
As @Dan mentions in his comment below, you can do a more rubyish syntax like this:
class Book < ActiveRecord::Base
default_scope { order(created_at: :desc) }
end
or with multiple columns:
class Book < ActiveRecord::Base
default_scope { order({begin_date: :desc}, :name) }
end
Thanks @Dan!
I ran into this problem too, a lot of people seem to recommend force reloading your page, which won't fix the issue in cases such as if you're running it on a server. I believe the optimal solution in this scenario is to timestamp your css.
<link rel="stylesheet" href="{% static 'home/radioStyles.css' %}?{% now 'U' %}" type="text/css"/>
Where adding ?{% now 'U' %} to the end of your css file would fix this issue.
<link rel="stylesheet" type="text/css" href="style.css?Wednesday 2nd February 2020 12PM" />
Where ?Wednesday 2nd February 2020 12PM
(current date) seems to fix the issue, I also noticed just putting the time fixes it too.
Consider a example where I have two databases namely allmsa.db and atlanta.db. Say the database allmsa.db has tables for all msas in US and database atlanta.db is empty.
Our target is to copy the table atlanta from allmsa.db to atlanta.db.
ATTACH '/mnt/fastaccessDS/core/csv/allmsa.db' AS AM;
note that we give the entire path of the database to be attached.sqlite> .databases
you can see the output asseq name file --- --------------- ---------------------------------------------------------- 0 main /mnt/fastaccessDS/core/csv/atlanta.db 2 AM /mnt/fastaccessDS/core/csv/allmsa.db
INSERT INTO atlanta SELECT * FROM AM.atlanta;
This should serve your purpose.
Spring's Web MVC framework is designed around a DispatcherServlet that dispatches requests to handlers, with configurable handler mappings, view resolution, locale and theme resolution as well as support for upload files. The default handler is a very simple Controller interface, just offering a ModelAndView handleRequest(request,response) method. This can already be used for application controllers, but you will prefer the included implementation hierarchy, consisting of, for example AbstractController, AbstractCommandController and SimpleFormController. Application controllers will typically be subclasses of those. Note that you can choose an appropriate base class: if you don't have a form, you don't need a form controller. This is a major difference to Struts
" error: command 'gcc' failed with exit status 1 ". the installation failed because of missing python-devel and some dependencies.
the best way to correct gcc problem:
You need to reinstall gcc , gcc-c++ and dependencies.
For python 2.7
$ sudo yum -y install gcc gcc-c++ kernel-devel
$ sudo yum -y install python-devel libxslt-devel libffi-devel openssl-devel
$ pip install "your python packet"
For python 3.4
$ sudo apt-get install python3-dev
$ pip install "your python packet"
Hope this will help.
I usually use numpy sum over the logical condition column:
>>> import numpy as np
>>> import pandas as pd
>>> df = pd.DataFrame({'Age' : [20,24,18,5,78]})
>>> np.sum(df['Age'] > 20)
2
This seems to me slightly shorter than the solution presented above
If you create a file in Notepad or Notepad++ in Windows, bring it to Linux, and open it by Vim, you will see ^M at the end of each line. To remove this,
At your Linux terminal, type
dos2unix filename.ext
This will do the required magic.
I did a table for changing order of obj in database used .after() .before(), so this is from what i have experiment.
$(obj1).after($(obj2))
Is insert obj1 before obj2 and
$(obj1).before($(obj2))
do the vice versa.
So if obj1 is after obj3 and obj2 after of obj4, and if you want to change place obj1 and obj2 you will do it like
$(obj1).before($(obj4))
$(obj2).before($(obj3))
This should do it BTW you can use .prev() and .next() to find obj3 and obj4 if you didn't have some kind of index for it already.
I know this has been answered but just thought I'd share my solution as the top answer, although great, may now be a little outdated.
constructor (props) {
super(props)
this.state = { width: '0', height: '0' }
this.initUpdateWindowDimensions = this.updateWindowDimensions.bind(this)
this.updateWindowDimensions = debounce(this.updateWindowDimensions.bind(this), 200)
}
componentDidMount () {
this.initUpdateWindowDimensions()
window.addEventListener('resize', this.updateWindowDimensions)
}
componentWillUnmount () {
window.removeEventListener('resize', this.updateWindowDimensions)
}
updateWindowDimensions () {
this.setState({ width: window.innerWidth, height: window.innerHeight })
}
The only difference really is that I'm debouncing (only running every 200ms) the updateWindowDimensions on the resize event to increase performance a bit, BUT not debouncing it when it's called on ComponentDidMount.
I was finding the debounce made it quite laggy to mount sometimes if you have a situation where it's mounting often.
Just a minor optimisation but hope it helps someone!
#fixedbutton {
position: fixed;
bottom: 0px;
right: 0px;
z-index: 1000;
}
The z-index
is added to overshadow any element with a greater property you might not know about.
In pymongo you can update with:
mycollection.update({'_id':mongo_id}, {"$set": post}, upsert=False)
Upsert parameter will insert instead of updating if the post is not found in the database.
Documentation is available at mongodb site.
UPDATE For version > 3 use update_one instead of update:
mycollection.update_one({'_id':mongo_id}, {"$set": post}, upsert=False)
Adding the following line in the head tag fixed my issue.
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
There is a command line program to convert any Java project into a SBT/Maven project.
It resolves all jars and tries to figure out the correct version based on SHA checksum, classpath or filename. Then it tries to compile the sources until it finds a working configuration. Custom tasks to execute per dependency configuration can be given too.
UniversalResolver 1.0
Usage: UniversalResolver [options]
-s <srcpath1>,<srcpath2>... | --srcPaths <srcpath1>,<srcpath2>...
required src paths to include
-j <jar1>,<jar2>... | --jars <jar1>,<jar2>...
required jars/jar paths to include
-t /path/To/Dir | --testDirectory /path/To/Dir
required directory where test configurations will be stored
-a <task1>,<task2>... | --sbt-tasks <task1>,<task2>...
SBT Tasks to be executed. i.e. compile
-d /path/To/dependencyFile.json | --dependencyFile /path/To/dependencyFile.json
optional file where the dependency buffer will be stored
-l | --search
load and search dependencies from remote repositories
-g | --generateConfigurations
generate dependency configurations
-c <value> | --findByNameCount <value>
number of dependencies to resolve by class name per jar
import re
pattern = re.compile("^([A-Z][0-9]+)+$")
pattern.search(string)
Depends on who you are!
If you're an business owner, SOA is a solution to increase your incomes and business agility. If you're an entreprise architect, SOA is a way to draw nice and clean piece of software on a blank canvas. If you're an architect SOA is the solution to design loosely coupled services over an integration platform, to just plug services into outlets. If you're a developper SOA is a programming paradigm where a service is in the center of the design and the code.
You should read 100-SOA-Questions [pdf]
Cheers
If your values are coming from the database, show selected values in that way.
<div class="form-group">
<label for="status">Status</label>
<select class="form-control" name="status" [(ngModel)]="category.status">
<option [value]="1" [selected]="category.status ==1">Active</option>
<option [value]="0" [selected]="category.status ==0">In Active</option>
</select>
</div>
Windows and Linux:
Ctrl + Shift + I keys to open Developer Tools
Ctrl + Shift + J to open Developer Tools and bring focus to the Console.
Ctrl + Shift + C to toggle Inspect Element mode.
Mac:
? + ? + I keys to open Developer Tools
? + ? + J to open Developer Tools and bring focus to the Console.
? + ? + C to toggle Inspect Element mode.
public static void openWebpage(String urlString) {
try {
Desktop.getDesktop().browse(new URL(urlString).toURI());
} catch (Exception e) {
e.printStackTrace();
}
}
We faced the same issue and fixed it. Below is the reason and solution.
Problem
When the connection pool mechanism is used, the application server (in our case, it is JBOSS) creates connections according to the min-connection
parameter. If you have 10 applications running, and each has a min-connection
of 10, then a total of 100 sessions will be created in the database. Also, in every database, there is a max-session
parameter, if your total number of connections crosses that border, then you will get Got minus one from a read call
.
FYI: Use the query below to see your total number of sessions:
SELECT username, count(username) FROM v$session
WHERE username IS NOT NULL group by username
Solution: With the help of our DBA, we increased that max-session
parameter, so that all our application min-connection
can accommodate.
I got here googling for C# compiler error CS0176, through (duplicate) question Static member instance reference issue.
In my case, the error happened because I had a static method and an extension method with the same name. For that, see Static method and extension method with same name.
[May be this should have been a comment. Sorry that I don't have enough reputation yet.]
Edward,
You can modify the code in your example like this:
var playerShip:PlayerShip!
var deltaPoint = CGPointZero
init(size: CGSize)
{
super.init(size: size)
playerLayerNode.addChild(playerShip)
}
This is using an implicitly unwrapped optional.
In documentation we can read:
"As with optionals, if you don’t provide an initial value when you declare an implicitly unwrapped optional variable or property, it’s value automatically defaults to nil."
If someone is having trouble with installing php-mbstring
package in ubuntu do following
sudo apt-get install libapache2-mod-php5
$formattedPrice = Mage::helper('core')->currency($_finalPrice,true,false);
fields() and fieldNames() both were not working for me. And I had to spend quite sometime to find a way to iterate over the keys. There are two ways by which it can be done.
One is by converting it into a map (takes up more space):
ObjectMapper mapper = new ObjectMapper();
Map<String, Object> result = mapper.convertValue(jsonNode, Map.class);
for (String key : result.keySet())
{
if(key.equals(foo))
{
//code here
}
}
Another, by using a String iterator:
Iterator<String> it = jsonNode.getFieldNames();
while (it.hasNext())
{
String key = it.next();
if (key.equals(foo))
{
//code here
}
}
how can i return a array in a c++ method and how must i declare it? int[] test(void); ??
This sounds like a simple question, but in C++ you have quite a few options. Firstly, you should prefer...
std::vector<>
, which grows dynamically to however many elements you encounter at runtime, or
std::array<>
(introduced with C++11), which always stores a number of elements specified at compile time,
...as they manage memory for you, ensuring correct behaviour and simplifying things considerably:
std::vector<int> fn()
{
std::vector<int> x;
x.push_back(10);
return x;
}
std::array<int, 2> fn2() // C++11
{
return {3, 4};
}
void caller()
{
std::vector<int> a = fn();
const std::vector<int>& b = fn(); // extend lifetime but read-only
// b valid until scope exit/return
std::array<int, 2> c = fn2();
const std::array<int, 2>& d = fn2();
}
The practice of creating a const
reference to the returned data can sometimes avoid a copy, but normally you can just rely on Return Value Optimisation, or - for vector
but not array
- move semantics (introduced with C++11).
If you really want to use an inbuilt array (as distinct from the Standard library class called array
mentioned above), one way is for the caller to reserve space and tell the function to use it:
void fn(int x[], int n)
{
for (int i = 0; i < n; ++i)
x[i] = n;
}
void caller()
{
// local space on the stack - destroyed when caller() returns
int x[10];
fn(x, sizeof x / sizeof x[0]);
// or, use the heap, lives until delete[](p) called...
int* p = new int[10];
fn(p, 10);
}
Another option is to wrap the array in a structure, which - unlike raw arrays - are legal to return by value from a function:
struct X
{
int x[10];
};
X fn()
{
X x;
x.x[0] = 10;
// ...
return x;
}
void caller()
{
X x = fn();
}
Starting with the above, if you're stuck using C++03 you might want to generalise it into something closer to the C++11 std::array
:
template <typename T, size_t N>
struct array
{
T& operator[](size_t n) { return x[n]; }
const T& operator[](size_t n) const { return x[n]; }
size_t size() const { return N; }
// iterators, constructors etc....
private:
T x[N];
};
Another option is to have the called function allocate memory on the heap:
int* fn()
{
int* p = new int[2];
p[0] = 0;
p[1] = 1;
return p;
}
void caller()
{
int* p = fn();
// use p...
delete[] p;
}
To help simplify the management of heap objects, many C++ programmers use "smart pointers" that ensure deletion when the pointer(s) to the object leave their scopes. With C++11:
std::shared_ptr<int> p(new int[2], [](int* p) { delete[] p; } );
std::unique_ptr<int[]> p(new int[3]);
If you're stuck on C++03, the best option is to see if the boost library is available on your machine: it provides boost::shared_array
.
Yet another option is to have some static memory reserved by fn()
, though this is NOT THREAD SAFE, and means each call to fn()
overwrites the data seen by anyone keeping pointers from previous calls. That said, it can be convenient (and fast) for simple single-threaded code.
int* fn(int n)
{
static int x[2]; // clobbered by each call to fn()
x[0] = n;
x[1] = n + 1;
return x; // every call to fn() returns a pointer to the same static x memory
}
void caller()
{
int* p = fn(3);
// use p, hoping no other thread calls fn() meanwhile and clobbers the values...
// no clean up necessary...
}
Also worth checking that you aren't accidentally operating on the wrong database. This error will occur if the foreign table does not exist. Why does MySQL have to be so cryptic?
This an example from my code how to address a widget(button) in popupwindow
View v=LayoutInflater.from(getContext()).inflate(R.layout.popupwindow, null, false);
final PopupWindow pw = new PopupWindow(v,500,500, true);
final Button button = rootView.findViewById(R.id.button);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
pw.showAtLocation(rootView.findViewById(R.id.constraintLayout), Gravity.CENTER, 0, 0);
}
});
final Button popup_btn=v.findViewById(R.id.popupbutton);
popup_btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
popup_btn.setBackgroundColor(Color.RED);
}
});
Hope this help you
for higher precision. this format:
45 11.735N,004 34.281E
and this
45 23.623, 5 38.77
USE This Assembly Referance in your Project
Add a reference to System.Net.Http.Formatting.dll
While this seems to work
Code::query()
->where('to_be_used_by_user_id', '!=' , 2)
->orWhereNull('to_be_used_by_user_id')
->get();
you should not use it for big tables, because as a general rule "or" in your where clause is stopping query to use index. You are going from "Key lookup" to "full table scan"
Instead, try Union
$first = Code::whereNull('to_be_used_by_user_id');
$code = Code::where('to_be_used_by_user_id', '!=' , 2)
->union($first)
->get();
Maybe it will help someone, but sometimes Name tag might be missing for a reference and it leads that assembly cannot be found when building with MSBuild.
Make sure that Name
tag is available for particular reference csproj file, for example,
<ProjectReference Include="..\MyDependency1.csproj">
<Project>{9A2D95B3-63B0-4D53-91F1-5EFB99B22FE8}</Project>
<Name>MyDependency1</Name>
</ProjectReference>
Well, a for or while loop differs from a do while loop. A do while executes the statements atleast once, even if the condition turns out to be false.
The for loop you specified is absolutely correct.
Although i will do all the loops for you once again.
int sum = 0;
// for loop
for (int i = 1; i<= 100; i++){
sum = sum + i;
}
System.out.println(sum);
// while loop
sum = 0;
int j = 1;
while(j<=100){
sum = sum + j;
j++;
}
System.out.println(sum);
// do while loop
sum = 0;
j = 1;
do{
sum = sum + j;
j++;
}
while(j<=100);
System.out.println(sum);
In the last case condition j <= 100 is because, even if the condition of do while turns false, it will still execute once but that doesn't matter in this case as the condition turns true, so it continues to loop just like any other loop statement.
If you want to set image as background for whole page, use this:
body
{
background-image: url('Image URL');
}
While you may wish to use a library, such as the excellent jQuery, you don't have to: all modern browsers support HTTP very well in their JavaScript implementations via the XMLHttpRequest API, which, despite its name, is not limited to XML representations.
Here's an example of making a synchronous HTTP PUT request in JavaScript:
var url = "http://host/path/to/resource";
var representationOfDesiredState = "The cheese is old and moldy, where is the bathroom?";
var client = new XMLHttpRequest();
client.open("PUT", url, false);
client.setRequestHeader("Content-Type", "text/plain");
client.send(representationOfDesiredState);
if (client.status == 200)
alert("The request succeeded!\n\nThe response representation was:\n\n" + client.responseText)
else
alert("The request did not succeed!\n\nThe response status was: " + client.status + " " + client.statusText + ".");
This example is synchronous because that makes it a little easier, but it's quite easy to make asynchronous requests using this API as well.
There are thousands of pages and articles on the web about learning XmlHttpRequest — they usually use the term AJAX – unfortunately I can't recommend a specific one. You may find this reference handy though.
When you execute a program the child program inherits its environment variables from the parent. For instance if $HOME
is set to /root
in the parent then the child's $HOME
variable is also set to /root
.
This only applies to environment variable that are marked for export. If you set a variable at the command-line like
$ FOO="bar"
That variable will not be visible in child processes. Not unless you export it:
$ export FOO
You can combine these two statements into a single one in bash (but not in old-school sh):
$ export FOO="bar"
Here's a quick example showing the difference between exported and non-exported variables. To understand what's happening know that sh -c
creates a child shell process which inherits the parent shell's environment.
$ FOO=bar
$ sh -c 'echo $FOO'
$ export FOO
$ sh -c 'echo $FOO'
bar
Note: To get help on shell built-in commands use help export
. Shell built-ins are commands that are part of your shell rather than independent executables like /bin/ls
.
As everyone else has mentioned it is better to use the "in" operator, it can also act on lists:
line = "This,is,a,sample,string"
lst = ['This', 'sample']
for i in lst:
i in line
>> True
>> True
I would generally recommend using element.attachEvent (IE) or element.addEventListener (other browsers) over setting the onclick event directly as the latter will replace any existing event handlers for that element.
attachEvent / addEventListening allow multiple event handlers to be created.
For one, you can't modify string literals. It's undefined behavior.
To fix that you can make str
a local array:
char str[] = "First string";
Now, you will have a second problem, is that str
isn't large enough to hold str2
. So you will need to increase the length of it. Otherwise, you will overrun str
- which is also undefined behavior.
To get around this second problem, you either need to make str
at least as long as str2
. Or allocate it dynamically:
char *str2 = "Second string";
char *str = malloc(strlen(str2) + 1); // Allocate memory
// Maybe check for NULL.
strcpy(str, str2);
// Always remember to free it.
free(str);
There are other more elegant ways to do this involving VLAs (in C99) and stack allocation, but I won't go into those as their use is somewhat questionable.
As @SangeethSaravanaraj pointed out in the comments, everyone missed the #import
. It should be #include
:
#include <stdio.h>
#include <string.h>
For me the best way to do this is:
.container{
position: relative;
}
.element{
position: absolute;
top: 50%;
transform: translateY(-50%);
}
The advantage is not having to make the height explicit
Let's see an example:
int sum = 0;
for(int i = 1; i <= 100 ; i++){
if(i % 2 == 0)
continue;
sum += i;
}
This would get the sum of only odd numbers from 1 to 100.
If you use @RestController
you cannot return a view (By using Viewresolver
in Spring/springboot) and yes @ResponseBody
is not needed in this case.
If you use @Controller
you can return a view in Spring web MVC.
Never delete this file (ibdata1
) because all your data will be deleted!!!
I suggest three ways :
A:
1- Exit from XAMPP control panel
.
1- Rename the folder mysql/data
to mysql/data_old
(you can use any name)
2- Create a new folder mysql/data
3- Copy the content that resides in mysql/backup
to the new mysql/data
folder
4- Copy all your database folders that are in mysql/data_old
to mysql/data
(skipping the mysql, performance_schema, and phpmyadmin folders from data_old)
5- Finally copy the ibdata1
file from mysql/data_old
and replace it inside mysql/data folder
6- Reastart your system.
B:
1- Stop all sql services.
2- Next, start all sql services again.
C:
1- Open XAMPP control panel
2- Click on Config button, in front of mysql, click on my.ini
3- change client port and server port.
Websockets use sockets in their implementation. Websockets are based on a standard protocol (now in final call, but not yet final) that defines a connection "handshake" and message "frame." The two sides go through the handshake procedure to mutually accept a connection and then use the standard message format ("frame") to pass messages back and forth.
I'm developing a framework that will allow you to communicate directly machine to machine with installed software. It might suit your purpose. You can follow my blog if you wish: http://highlevellogic.blogspot.com/2011/09/websocket-server-demonstration_26.html
You could write this as a psql script, e.g.,
START TRANSACTION;
CREATE TABLE ...
CREATE TABLE ...
COMMIT;
\echo 'Task completed sucessfully.'
and run with
psql -f somefile.sql
Raising errors with parameters isn't possible in PostgreSQL directly. When porting such code, some people encode the necessary information in the error string and parse it out if necessary.
It all works a bit differently, so be prepared to relearn/rethink/rewrite a lot of things.
In my application also I've experienced an issue like this. I've set top edge inset of tableView zero. Also tried set false
for automaticallyAdjustsScrollViewInsets
. But didn't work.
Finally I got a working solution. I don't know is this the correct way. But implementing heightForHeaderInSection
delegate method worked for me. You have to return a non-zero value to work this (return zero will display same space as before).
override func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
return 0.1
}
Missing driver file.
This error is really common for people just getting started with PDI.
Drivers go in \pentaho\design-tools\data-integration\libext\JDBC for PDI. If you are using other tools in the Pentaho suite, you may need to copy drivers to additional locations for those tools. For reference, here are the appropriate folders for some of the other design tools:
If this transformation or job will run on another box, such as a test or production server, don't forget to include copying the jar file and restarting PDI or the Data Integration Server in your deployment considerations.
If you are on a OS X, this probably has nothing to do with the sed command. On the OSX version of sed
, the -i
option expects an extension
argument so your command is actually parsed as the extension
argument and the file path is interpreted as the command code.
Try adding the -e
argument explicitly and giving ''
as argument to -i
:
find ./ -type f -exec sed -i '' -e "s/192.168.20.1/new.domain.com/" {} \;
See this.
Update 2019/04/16: It seems copy/paste is now officially supported in Windows build >= 17643. Take a look at Rich Turner's answer. This can be enabled through the same settings menu described below by clicking the checkbox next to "Use Ctrl+Shift+C/V as Copy/Paste".
Another solution would be to enable "QuickEdit Mode" and then you can paste by right-clicking in the terminal.
To enable QuickEdit Mode, right-click on the toolbar (or simply click on the icon in the upper left corner), select Properties, and in the Options tab, click the checkbox next to QuickEdit Mode.
With this mode enabled, you can also copy text in the terminal by clicking and dragging. Once a selection is made, you can press Enter or right-click to copy.
I don't think there is a way to ignore adding DEFINER
s to the dump. But there are ways to remove them after the dump file is created.
Open the dump file in a text editor and replace all occurrences of DEFINER=root@localhost
with an empty string ""
Edit the dump (or pipe the output) using perl
:
perl -p -i.bak -e "s/DEFINER=\`\w.*\`@\`\d[0-3].*[0-3]\`//g" mydatabase.sql
mysqldump ... | sed -e 's/DEFINER[ ]*=[ ]*[^*]*\*/\*/' > triggers_backup.sql
To use command support you should follow this steps:
Define Path in Environment Variables:
append variable value with the path to TortoiseProc.exe file, for example:
C:\Program Files\TortoiseSVN\bin
Since you have registered TortoiseProc, you can use it in according to TortoiseSVN documentation.
Examples:
TortoiseProc.exe /command:commit /path:"c:\svn_wc\file1.txt*c:\svn_wc\file2.txt" /logmsg:"test log message" /closeonend:0
TortoiseProc.exe /command:update /path:"c:\svn_wc\" /closeonend:0
TortoiseProc.exe /command:log /path:"c:\svn_wc\file1.txt" /startrev:50 /endrev:60 /closeonend:0
P.S. To use friendly name like 'svn' instead of 'TortoiseProc', place 'svn.bat' file in the directory of 'TortoiseProc.exe'. There is an example of svn.bat:
TortoiseProc.exe %1 %2 %3
As a rule of thumb, the best place to put <script>
tags is the bottom of the page, just before </body>
tag. Something like this:
<html>
<head>
<title>My awesome page</title>
<!-- CSS -->
<link rel="stylesheet" type="text/css" href="...">
<link rel="stylesheet" type="text/css" href="...">
<link rel="stylesheet" type="text/css" href="...">
<link rel="stylesheet" type="text/css" href="...">
</head>
<body>
<!-- Content content content -->
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
<script type="text/javascript" src="..."></script>
<script type="text/javascript" src="..."></script>
<script type="text/javascript" src="..."></script>
</body>
</html>
The problem caused by scripts is that they block parallel downloads. The HTTP/1.1 specification suggests that browsers download no more than two components in parallel per hostname. If you serve your images from multiple hostnames, you can get more than two downloads to occur in parallel. While a script is downloading, however, the browser won't start any other downloads, even on different hostnames. More...
A little bit off-topic, but... Put stylesheets at the top.
While researching performance at Yahoo!, we discovered that moving stylesheets to the document HEAD makes pages appear to be loading faster. This is because putting stylesheets in the HEAD allows the page to render progressively. More...
Yahoo have released a really cool guide that lists best practices to speed up a website. Definitely worth reading: https://developer.yahoo.com/performance/rules.html
Append five whitespace characters then cut off the first five and trim the result. The number of spaces you append should match the number you are cutting. Be sure to include the parenthesis before .Substring(0,X)
or you'll append nothing.
string str = (yourStringVariable + " ").Substring(0,5).Trim();
With this technique you won't have to worry about the ArgumentOutOfRangeException
mentioned in other answers.
I currently have Xcode 4.6.3 and 5.0 installed. I used the following bash script to link 5.0 to the SDKs in the old version:
platforms_path="$1/Contents/Developer/Platforms";
if [ -d $platforms_path ]; then
for platform in `ls $platforms_path`
do
sudo ln -sf $platforms_path/$platform/Developer/SDKs/* $(xcode-select --print-path)/Platforms/$platform/Developer/SDKs;
done;
fi;
You just need to supply it with the path to the .app:
./xcode.sh /Applications/Xcode-463.app
scroll.fullScroll(View.FOCUS_DOWN)
will lead to the change of focus. That will bring some strange behavior when there are more than one focusable views, e.g two EditText. There is another way for this question.
View lastChild = scrollLayout.getChildAt(scrollLayout.getChildCount() - 1);
int bottom = lastChild.getBottom() + scrollLayout.getPaddingBottom();
int sy = scrollLayout.getScrollY();
int sh = scrollLayout.getHeight();
int delta = bottom - (sy + sh);
scrollLayout.smoothScrollBy(0, delta);
This works well.
Kotlin Extension
fun ScrollView.scrollToBottom() {
val lastChild = getChildAt(childCount - 1)
val bottom = lastChild.bottom + paddingBottom
val delta = bottom - (scrollY+ height)
smoothScrollBy(0, delta)
}
Simple and Easiest Solution [Xamarin Form]
For Android
Android Project
, then Click on Properties
,AssemblyInfo.cs
and paste this code right there:
[assembly: Application(UsesCleartextTraffic =true)]
For iOS
Use NSAppTransportSecurity
:
You have to set the NSAllowsArbitraryLoads
key to YES
under NSAppTransportSecurity
dictionary in your info.plist
file.
<key>NSAppTransportSecurity</key>
<dict>
<key>NSAllowsArbitraryLoads</key>
<true/>
</dict>
In Python, curly braces are used to define a dictionary.
a={'one':1, 'two':2, 'three':3}
a['one']=1
a['three']=3
In other languages, { } are used as part of the flow control. Python however used indentation as its flow control because of its focus on readable code.
for entry in entries:
code....
There's a little easter egg in Python when it comes to braces. Try running this on the Python Shell and enjoy.
from __future__ import braces
Notice that there is a difference between
set encoding
and
set fileencoding
In the first case, you'll change the output encoding that is shown in the terminal. In the second case, you'll change the output encoding of the file that is written.