You can try changing it to this:
If myTableData.Rows.Count > 0 Then
For i As Integer = 0 To myTableData.Rows.Count - 1
''Dim DataType() As String = myTableData.Rows(i).Item(1)
ListBox2.Items.Add(myTableData.Rows(i)(1))
Next
End If
Note: Your loop needs to be one less than the row count since it's a zero-based index.
Yocoder is right,
Inside the DataTemplate
, your DataContext
is set to the Rule
its currently handling..
To access the parents DataContext
, you can also consider using a RelativeSource
in your binding:
<TextBlock Text="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type ____Your Parent control here___ }}, Path=DataContext.SelectedRule.Name}" />
More info on RelativeSource
can be found here:
http://msdn.microsoft.com/en-us/library/system.windows.data.relativesource.aspx
I know this question is quite old, but I was looking for a solution to this problem too. The accepted solution is for WinForms not WPF which I think many who come here are looking for.
For anyone looking for a WPF solution, here is a great approach (via Oskar's answer here):
private void myListBox_MouseDoubleClick(object sender, MouseButtonEventArgs e)
{
DependencyObject obj = (DependencyObject)e.OriginalSource;
while (obj != null && obj != myListBox)
{
if (obj.GetType() == typeof(ListBoxItem))
{
// Do something
break;
}
obj = VisualTreeHelper.GetParent(obj);
}
}
Basically, you walk up the VisualTree until you've either found a parent item that is a ListBoxItem, or you ascend up to the actual ListBox (and therefore did not click a ListBoxItem).
Unfortunately for MSForms list box looping through the list items and checking their Selected property is the only way. However, here is an alternative. I am storing/removing the selected item in a variable, you can do this in some remote cell and keep track of it :)
Dim StrSelection As String
Private Sub ListBox1_Change()
If ListBox1.Selected(ListBox1.ListIndex) Then
If StrSelection = "" Then
StrSelection = ListBox1.List(ListBox1.ListIndex)
Else
StrSelection = StrSelection & "," & ListBox1.List(ListBox1.ListIndex)
End If
Else
StrSelection = Replace(StrSelection, "," & ListBox1.List(ListBox1.ListIndex), "")
End If
End Sub
If you are working on a windows forms project you can try the following:
Add items to the ListBox
as KeyValuePair
objects:
listBox.Items.Add(new KeyValuePair(key, value);
Then you will be able to retrieve them the following way:
KeyValuePair keyValuePair = listBox.Items[index];
var value = keyValuePair.Value;
Thnaks for answer. I tried it myself too to an Empty Project and - lo behold allmighty creator of heaven and seven seas - it worked. I originally had ListBox inside which was inside of root . For some reason ListBox doesn't like being inside of StackPanel, at all! =)
-pom-
If you want to retrieve your value from an list box you should try this:
String itemSelected = numberListBox.GetItemText(numberListBox.SelectedItem);
If your listbox is connected to a LIST as the data source, listbox.Items.Clear() will not work.
I typically create a file named "DataAccess.cs" containing a separate class for code that uses or changes data pertaining to my form. The following is a code snippet from the DataAccess class that clears or removes all items in the list "exampleItems"
public List<ExampleItem> ClearExampleItems()
{
List<ExampleItem> exampleItems = new List<ExampleItem>();
exampleItems.Clear();
return examplelistItems;
}
ExampleItem is also in a separate class named "ExampleItem.cs"
using System;
namespace // The namespace is automatically added by Visual Studio
{
public class ExampleItem
{
public int ItemId { get; set; }
public string ItemType { get; set; }
public int ItemNumber { get; set; }
public string ItemDescription { get; set; }
public string FullExampleItem
{
get
{
return $"{ItemId} {ItemType} {ItemNumber} {ItemDescription}";
}
}
}
}
In the code for your Window Form, the following code fragments reference your listbox:
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Linq;
using System.Windows.Forms;
namespace // The namespace is automatically added by Visual Studio
{
public partial class YourFormName : Form
{
List<ExampleItem> exampleItems = new List<ExampleItem>();
public YourFormName()
{
InitializeComponent();
// Connect listbox to LIST
UpdateExampleItemsBinding();
}
private void UpdateUpdateItemsBinding()
{
ExampleItemsListBox.DataSource = exampleItems;
ExampleItemsListBox.DisplayMember = "FullExampleItem";
}
private void buttonClearListBox_Click(object sender, EventArgs e)
{
DataAccess db = new DataAccess();
exampleItems = db.ClearExampleItems();
UpdateExampleItemsBinding();
}
}
}
This solution specifically addresses a Windows Form listbox with the datasource connected to a list.
I had from a totaly different reason the same notice "Value does not fall within the expected range" from the Visual studio 2008 while trying to use the: Tools -> Windows Embedded Silverlight Tools -> Update Silverlight For Windows Embedded Project.
After spending many ohurs I found out that the problem was that there wasn't a resource file and the update tool looks for the .RC file
Therefor the solution is to add to the resource folder a .RC file and than it works perfectly. I hope it will help someone out there
For a UWP app:
XAML
<ListBox x:Name="List" DisplayMemberPath="Source" ItemsSource="{x:Bind Results}"/>
C#
public ObservableCollection<Type> Results
I added a "Height" to my ListBox and it added the scrollbar nicely.
Here's a great method I recently found on a different stack overflow post regarding multi-dimensional arrays, but the answer works beautifully for single dimensional arrays as well:
# Create an 8 x 5 matrix of 0's:
w, h = 8, 5;
MyMatrix = [ [0 for x in range( w )] for y in range( h ) ]
# Create an array of objects:
MyList = [ {} for x in range( n ) ]
I love this because you can specify the contents and size dynamically, in one line!
One more for the road:
# Dynamic content initialization:
MyFunkyArray = [ x * a + b for x in range ( n ) ]
Everyone else has posted "going backwards" answer, so I'll give the alternative: create a list of items you want to remove, then remove them at the end:
List<string> removals = new List<string>();
foreach (string s in listBox1.Items)
{
MessageBox.Show(s);
//do stuff with (s);
removals.Add(s);
}
foreach (string s in removals)
{
listBox1.Items.Remove(s);
}
Sometimes the "work backwards" method is better, sometimes the above is better - particularly if you're dealing with a type which has a RemoveAll(collection)
method. Worth knowing both though.
You will need to draw the item yourself. Change the DrawMode to OwnerDrawFixed and handle the DrawItem event.
/// <summary>
/// Handles the DrawItem event of the listBox1 control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="System.Windows.Forms.DrawItemEventArgs"/> instance containing the event data.</param>
private void listBox1_DrawItem( object sender, DrawItemEventArgs e )
{
e.DrawBackground();
Graphics g = e.Graphics;
// draw the background color you want
// mine is set to olive, change it to whatever you want
g.FillRectangle( new SolidBrush( Color.Olive), e.Bounds );
// draw the text of the list item, not doing this will only show
// the background color
// you will need to get the text of item to display
g.DrawString( THE_LIST_ITEM_TEXT , e.Font, new SolidBrush( e.ForeColor ), new PointF( e.Bounds.X, e.Bounds.Y) );
e.DrawFocusRectangle();
}
You can also use the AddRange
method
listBox1.Items.AddRange(myList.ToArray());
You should be able to use the Clear()
method.
A ListView is a specialized ListBox (that is, it inherits from ListBox). It allows you to specify different views rather than a straight list. You can either roll your own view, or use GridView (think explorer-like "details view"). It's basically the multi-column listbox, the cousin of windows form's listview.
If you don't need the additional capabilities of ListView, you can certainly use ListBox if you're simply showing a list of items (Even if the template is complex).
For Asp.Net MVC
@Html.ListBox("parameterName", ViewBag.ParameterValueList as MultiSelectList,
new {
@class = "chosen-select form-control"
})
or
@Html.ListBoxFor(model => model.parameterName,
ViewBag.ParameterValueList as MultiSelectList,
new{
data_placeholder = "Select Options ",
@class = "chosen-select form-control"
})
Start by selecting the sheets you want to combine:
ThisWorkbook.Sheets(Array("Sheet1", "Sheet2")).Select
ActiveSheet.ExportAsFixedFormat Type:=xlTypePDF, Filename:= _
"C:\tempo.pdf", Quality:= xlQualityStandard, IncludeDocProperties:=True, _
IgnorePrintAreas:=False, OpenAfterPublish:=True
For PHP 7.1.0 onwards, you can use the new syntax (instead of the list function):
/**
* @return array [foo, bar]
*/
function getFooAndBar(): array {
return ['foo', 'bar'];
}
[$foo, $bar] = getFooAndBar();
print 'Hello '. $foo . ' and ' . $bar;
It's OK for me if you want to return 2-3 variables, otherwise you should use an object with the desired properties.
In postgresql if you want to insert values with '
in it then for this you have to give extra '
insert into test values (1,'user''s log');
insert into test values (2,'''my users''');
insert into test values (3,'customer''s');
'use strict'
var fs = require("fs");
/***
* implementation of readFileSync
*/
var data = fs.readFileSync('input.txt');
console.log(data.toString());
console.log("Program Ended");
/***
* implementation of readFile
*/
fs.readFile('input.txt', function (err, data) {
if (err) return console.error(err);
console.log(data.toString());
});
console.log("Program Ended");
For better understanding run the above code and compare the results..
private void jTextField1KeyTyped(java.awt.event.KeyEvent evt) { _x000D_
if (jTextField1.getText().length()>=3) {_x000D_
getToolkit().beep();_x000D_
evt.consume();_x000D_
}_x000D_
}
_x000D_
it's because you are trying to launch your app from an activity that is not launcher activity. try run it from launcher activity or change your current activity category to launcher in android Manifest.
Consider this as the current update (Windows 10 (Version 1803) and Visual Studio 2017): I was unable to view the stack trace window and did find an option/menu item to view it. On investigating further, it seems this feature is not available on Windows 10. For further information please refer:
Copied from the above link: "This feature is not available in Windows 10, version 1507 and later versions of the WDK."
I personally prefer the "boolean1 ^ boolean2" expression due to its succinctness.
If I was in your situation (working in a team), I would strike a compromise by encapsulating the "boolean1 ^ boolean2" logic in a function with a descriptive name such as "isDifferent(boolean1, boolean2)".
For example, instead of using "boolean1 ^ boolean2", you would call "isDifferent(boolean1, boolean2)" like so:
if (isDifferent(boolean1, boolean2))
{
//do it
}
Your "isDifferent(boolean1, boolean2)" function would look like:
private boolean isDifferent(boolean1, boolean2)
{
return boolean1 ^ boolean2;
}
Of course, this solution entails the use of an ostensibly extraneous function call, which in itself is subject to Best Practices scrutiny, but it avoids the verbose (and ugly) expression "(boolean1 && !boolean2) || (boolean2 && !boolean1)"!
Using wrap=virtual
in your HTML form boxes gets rid of the horizontal scrollbar at the bottom of the box:
<textarea name= "enquiry" rows="4" cols="30" wrap="virtual"></textarea>
See example here : http://jsbin.com/opube3/2 (Tested on FF and IE)
I had the following problem(s) with the existing answers to this question (and variations of this question on other stackoverflow threads):
Or, slightly more accurately:
My final solution, which loads the script before returning, AND has all scripts properly accessible in the debugger (for Chrome at least) is as follows:
WARNING: The following code should PROBABLY be used only in 'development' mode. (For 'release' mode I recommend prepackaging and minification WITHOUT dynamic script loading, or at least without eval).
//Code User TODO: you must create and set your own 'noEval' variable
require = function require(inFileName)
{
var aRequest
,aScript
,aScriptSource
;
//setup the full relative filename
inFileName =
window.location.protocol + '//'
+ window.location.host + '/'
+ inFileName;
//synchronously get the code
aRequest = new XMLHttpRequest();
aRequest.open('GET', inFileName, false);
aRequest.send();
//set the returned script text while adding special comment to auto include in debugger source listing:
aScriptSource = aRequest.responseText + '\n////# sourceURL=' + inFileName + '\n';
if(noEval)//<== **TODO: Provide + set condition variable yourself!!!!**
{
//create a dom element to hold the code
aScript = document.createElement('script');
aScript.type = 'text/javascript';
//set the script tag text, including the debugger id at the end!!
aScript.text = aScriptSource;
//append the code to the dom
document.getElementsByTagName('body')[0].appendChild(aScript);
}
else
{
eval(aScriptSource);
}
};
I had this error after fresh Oracle installation.
To fix this I've launched Net configuration assistant (from start menu or netca.bat in the bin folder) and simply added a Listener.
With perl and Linux::Distribution, the cleanest solution for an old problem :
#!/bin/sh
perl -e '
use Linux::Distribution qw(distribution_name distribution_version);
my $linux = Linux::Distribution->new;
if(my $distro = $linux->distribution_name()) {
my $version = $linux->distribution_version();
print "you are running $distro";
print " version $version" if $version;
print "\n";
} else {
print "distribution unknown\n";
}
'
Try placing the host name (db01.mysql.vm.MyHostingServer.net
) in your windows host (C:\windows\system32\drivers\etc\host
) file along with it's IP address and port number and see if that helps.
Everybody describes issue with getting annotations, but the problem is in definition of your annotation. You should to add to your annotation definition a @Retention(RetentionPolicy.RUNTIME)
:
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.FIELD)
public @interface MyAnnotation{
int id();
}
You need to use the Convert()
method in the Encoding
class:
Encoding
object that represents ASCII encodingEncoding
object that represents Unicode encodingEncoding.Convert()
with the source encoding, the destination encoding, and the string to be encodedThere is an example here:
using System;
using System.Text;
namespace ConvertExample
{
class ConvertExampleClass
{
static void Main()
{
string unicodeString = "This string contains the unicode character Pi(\u03a0)";
// Create two different encodings.
Encoding ascii = Encoding.ASCII;
Encoding unicode = Encoding.Unicode;
// Convert the string into a byte[].
byte[] unicodeBytes = unicode.GetBytes(unicodeString);
// Perform the conversion from one encoding to the other.
byte[] asciiBytes = Encoding.Convert(unicode, ascii, unicodeBytes);
// Convert the new byte[] into a char[] and then into a string.
// This is a slightly different approach to converting to illustrate
// the use of GetCharCount/GetChars.
char[] asciiChars = new char[ascii.GetCharCount(asciiBytes, 0, asciiBytes.Length)];
ascii.GetChars(asciiBytes, 0, asciiBytes.Length, asciiChars, 0);
string asciiString = new string(asciiChars);
// Display the strings created before and after the conversion.
Console.WriteLine("Original string: {0}", unicodeString);
Console.WriteLine("Ascii converted string: {0}", asciiString);
}
}
}
The easiest way to do this is to delete the branch remotely and then use:
git fetch --prune (aka git fetch -p)
Assuming your div
has an id="myDiv"
, add the following to your CSS. The cursor: pointer
specifies that the cursor should be the same hand icon that is use for anchors (hyperlinks):
CSS to Add
#myDiv
{
cursor: pointer;
}
You can simply add the cursor style to your div
's HTML like this:
<div style="cursor: pointer">
</div>
EDIT:
If you are determined to use jQuery for this, then add the following line to your $(document).ready()
or body onload
: (replace myClass
with whatever class all of your div
s share)
$('.myClass').css('cursor', 'pointer');
In Java 9, you can now use Matcher#results()
to get a Stream<MatchResult>
which you can use to get a list/array of matches.
import java.util.regex.Pattern;
import java.util.regex.MatchResult;
String[] matches = Pattern.compile("your regex here")
.matcher("string to search from here")
.results()
.map(MatchResult::group)
.toArray(String[]::new);
// or .collect(Collectors.toList())
This was how added my headers in my flask application and it worked perfectly
@app.after_request
def add_header(response):
response.headers['X-Content-Type-Options'] = 'nosniff'
return response
public class SwingExample implements Runnable {
@Override
public void run() {
// Create the window
final JFrame f = new JFrame("Hello, World!");
SwingExample.centerWindow(f);
f.setPreferredSize(new Dimension(500, 250));
f.setMaximumSize(new Dimension(10000, 200));
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
public static void centerWindow(JFrame frame) {
Insets insets = frame.getInsets();
frame.setSize(new Dimension(insets.left + insets.right + 500, insets.top + insets.bottom + 250));
frame.setVisible(true);
frame.setResizable(false);
Dimension dimension = Toolkit.getDefaultToolkit().getScreenSize();
int x = (int) ((dimension.getWidth() - frame.getWidth()) / 2);
int y = (int) ((dimension.getHeight() - frame.getHeight()) / 2);
frame.setLocation(x, y);
}
}
To compare between latest commit of current branch and a tag:
git log --pretty=oneline HEAD...tag
I found the file located at:
C:\xampp\php\php.ini
Uncommented:
;extension=php_curl.dll
You also can use graceful restart the apache server with service apache2 reload
or apachectl -k graceful
.
As the apache doc says:
The USR1 or graceful signal causes the parent process to advise the children to exit after their current request (or to exit immediately if they're not serving anything). The parent re-reads its configuration files and re-opens its log files. As each child dies off the parent replaces it with a child from the new generation of the configuration, which begins serving new requests immediately.
Simple generic extensions
public static class Extensions
{
/// <summary>
/// Generic method for format nullable values
/// </summary>
/// <returns>Formated value or defaultValue</returns>
public static string ToString<T>(this Nullable<T> nullable, string format, string defaultValue = null) where T : struct
{
if (nullable.HasValue)
{
return String.Format("{0:" + format + "}", nullable.Value);
}
return defaultValue;
}
}
If this is a homework, then all I can say is: use String.split()
and HashMap<String,Integer>
.
(I see you've found split() already. You're along the right lines then.)
The short answer is "yes". A sample ldapsearch
command to query an Active Directory server is:
ldapsearch \
-x -h ldapserver.mydomain.com \
-D "[email protected]" \
-W \
-b "cn=users,dc=mydomain,dc=com" \
-s sub "(cn=*)" cn mail sn
This would connect to an AD server at hostname ldapserver.mydomain.com
as user [email protected]
, prompt for the password on the command line and show name and email details for users in the cn=users,dc=mydomain,dc=com
subtree.
See Managing LDAP from the Command Line on Linux for more samples. See LDAP Query Basics for Microsoft Exchange documentation for samples using LDAP queries with Active Directory.
This is something I need all the time so I created a bash function for it. It's based on glenn jackman's answer.
Add this to your .bash_profile etc.
function regex { gawk 'match($0,/'$1'/, ary) {print ary['${2:-'0'}']}'; }
Capture regex for each line in file
$ cat filename | regex '.*'
Capture 1st regex capture group for each line in file
$ cat filename | regex '(.*)' 1
Of course you can, just use setTimeout
to change a class or something to trigger the transition.
HTML:
<p id="aap">OHAI!</p>
CSS:
p {
opacity:1;
transition:opacity 500ms;
}
p.waa {
opacity:0;
}
JS to run on load or DOMContentReady:
setTimeout(function(){
document.getElementById('aap').className = 'waa';
}, 5000);
go to: /vendor/laravel/framework/src.Illuminate/Foundation
:
Open application.php file
Search for "version". The below indicates the version.
Basic:
ng g module chat
ng g service chat/chat -m chat
ng g component chat/chat-dialog -m chat
In chat.module.ts:
exports: [ChatDialogComponent],
providers: [ChatService]
In app.module.ts:
imports: [
BrowserModule,
ChatModule
]
Now in app.component.html:
<chat-dialog></chat-dialog>
LAZY LOADING:
ng g module pages --module app.module --route pages
CREATE src/app/pages/pages-routing.module.ts (340 bytes)
CREATE src/app/pages/pages.module.ts (342 bytes)
CREATE src/app/pages/pages.component.css (0 bytes)
CREATE src/app/pages/pages.component.html (20 bytes)
CREATE src/app/pages/pages.component.spec.ts (621 bytes)
CREATE src/app/pages/pages.component.ts (271 bytes)
UPDATE src/app/app-routing.module.ts (8611 bytes)
ng g module pages/forms --module pages/pages.module --route forms
CREATE src/app/forms/forms-routing.module.ts (340 bytes)
CREATE src/app/forms/forms.module.ts (342 bytes)
CREATE src/app/forms/forms.component.css (0 bytes)
CREATE src/app/forms/forms.component.html (20 bytes)
CREATE src/app/forms/forms.component.spec.ts (621 bytes)
CREATE src/app/forms/forms.component.ts (271 bytes)
UPDATE src/app/pages/pages-routing.module.ts (437 bytes)
If the reason you ask this question is because you want to use Core Bluetooth to advertise as an iBeacon rather than using the standard API, you can easily do so by advertising an NSDictionary such as:
{
kCBAdvDataAppleBeaconKey = <a7c4c5fa a8dd4ba1 b9a8a240 584f02d3 00040fa0 c5>;
}
See this answer for more information.
I found that I have ticked "Run whether user is logged on or not" and it returns a silent failure.
When I changed tick "Run only when user is logged on" instead it works for me.
parent()
method returns the direct parent element of the selected one. This method only traverse a single level up the DOM tree.
parents()
method allows us to search through the ancestors of these elements in the DOM tree. Begin from given selector and move up.
The **.parents()** and **.parent()** methods are almost similar, except that the latter only travels a single level up the DOM tree. Also, **$( "html" ).parent()** method returns a set containing document whereas **$( "html" ).parents()** returns an empty set.
[closest()][3]method returns the first ancestor of the selected element.An ancestor is a parent, grandparent, great-grandparent, and so on.
This method traverse upwards from the current element, all the way up to the document's root element (<html>), to find the first ancestor of DOM elements.
According to docs:
**closest()** method is similar to **parents()**, in that they both traverse up the DOM tree. The differences are as follows:
**closest()**
Begins with the current element
Travels up the DOM tree and returns the first (single) ancestor that matches the passed expression
The returned jQuery object contains zero or one element
**parents()**
Begins with the parent element
Travels up the DOM tree and returns all ancestors that matches the passed expression
The returned jQuery object contains zero or more than one element
You can execute the following commands
lsof / |grep deleted
kill the process id's, which free up the disk space.
LONG VERSION
src: https://en.wikipedia.org/wiki/C_date_and_time_functions
#include <time.h>
#include <stdlib.h>
#include <stdio.h>
int main(void)
{
time_t current_time;
char* c_time_string;
/* Obtain current time. */
current_time = time(NULL);
if (current_time == ((time_t)-1))
{
(void) fprintf(stderr, "Failure to obtain the current time.\n");
exit(EXIT_FAILURE);
}
/* Convert to local time format. */
c_time_string = ctime(¤t_time);
if (c_time_string == NULL)
{
(void) fprintf(stderr, "Failure to convert the current time.\n");
exit(EXIT_FAILURE);
}
/* Print to stdout. ctime() has already added a terminating newline character. */
(void) printf("Current time is %s", c_time_string);
exit(EXIT_SUCCESS);
}
The output is:
Current time is Thu Sep 15 21:18:23 2016
SHORT VERSION:
#include <stdio.h>
#include <time.h>
int main(int argc, char *argv[]) {
time_t current_time;
time(¤t_time);
printf("%s", ctime(¤t_time));
The output is:
Current time is Thu Jan 28 15:22:31 2021
One liner answer to the above question is :-
let the two lists be list1 and list2, and your requirement is to ensure whether two lists have the same elements, then as per me, following will be the best approach :-
if ((len(list1) == len(list2)) and
(all(i in list2 for i in list1))):
print 'True'
else:
print 'False'
The above piece of code will work per your need i.e. whether all the elements of list1 are in list2 and vice-verse.
But if you want to just check whether all elements of list1 are present in list2 or not, then you need to use the below code piece only :-
if all(i in list2 for i in list1):
print 'True'
else:
print 'False'
The difference is, the later will print True, if list2 contains some extra elements along with all the elements of list1. In simple words, it will ensure that all the elements of list1 should be present in list2, regardless of whether list2 has some extra elements or not.
I tried t.boolean :active, :default => 1 in migration file for creating entire table. After ran that migration when i checked in db it made as null. Even though i told default as "1". After that slightly i changed migration file like this then it worked for me for setting default value on create table migration file.
t.boolean :active, :null => false,:default =>1. Worked for me.
My Rails framework version is 4.0.0
function _showModalDialog(url, width, height, closeCallback) {
var modalDiv,
dialogPrefix = window.showModalDialog ? 'dialog' : '',
unit = 'px',
maximized = width === true || height === true,
w = width || 600,
h = height || 500,
border = 5,
taskbar = 40, // windows taskbar
header = 20,
x,
y;
if (maximized) {
x = 0;
y = 0;
w = screen.width;
h = screen.height;
} else {
x = window.screenX + (screen.width / 2) - (w / 2) - (border * 2);
y = window.screenY + (screen.height / 2) - (h / 2) - taskbar - border;
}
var features = [
'toolbar=no',
'location=no',
'directories=no',
'status=no',
'menubar=no',
'scrollbars=no',
'resizable=no',
'copyhistory=no',
'center=yes',
dialogPrefix + 'width=' + w + unit,
dialogPrefix + 'height=' + h + unit,
dialogPrefix + 'top=' + y + unit,
dialogPrefix + 'left=' + x + unit
],
showModal = function (context) {
if (context) {
modalDiv = context.document.createElement('div');
modalDiv.style.cssText = 'top:0;right:0;bottom:0;left:0;position:absolute;z-index:50000;';
modalDiv.onclick = function () {
if (context.focus) {
context.focus();
}
return false;
}
window.top.document.body.appendChild(modalDiv);
}
},
removeModal = function () {
if (modalDiv) {
modalDiv.onclick = null;
modalDiv.parentNode.removeChild(modalDiv);
modalDiv = null;
}
};
// IE
if (window.showModalDialog) {
window.showModalDialog(url, null, features.join(';') + ';');
if (closeCallback) {
closeCallback();
}
// Other browsers
} else {
var win = window.open(url, '', features.join(','));
if (maximized) {
win.moveTo(0, 0);
}
// When charging the window.
var onLoadFn = function () {
showModal(this);
},
// When you close the window.
unLoadFn = function () {
window.clearInterval(interval);
if (closeCallback) {
closeCallback();
}
removeModal();
},
// When you refresh the context that caught the window.
beforeUnloadAndCloseFn = function () {
try {
unLoadFn();
}
finally {
win.close();
}
};
if (win) {
// Create a task to check if the window was closed.
var interval = window.setInterval(function () {
try {
if (win == null || win.closed) {
unLoadFn();
}
} catch (e) { }
}, 500);
if (win.addEventListener) {
win.addEventListener('load', onLoadFn, false);
} else {
win.attachEvent('load', onLoadFn);
}
window.addEventListener('beforeunload', beforeUnloadAndCloseFn, false);
}
}
}
You can also have Git store your credentials permanently using the following:
git config credential.helper store
Note: While this is convenient, Git will store your credentials in clear text in a local file (.git-credentials) under your project directory (see below for the "home" directory). If you don't like this, delete this file and switch to using the cache option.
If you want Git to resume to asking you for credentials every time it needs to connect to the remote repository, you can run this command:
git config --unset credential.helper
To store the passwords in .git-credentials
in your %HOME%
directory as opposed to the project directory: use the --global
flag
git config --global credential.helper store
Honestly though, whether there is a way for it to evaluate to true or not (and as others have shown, there are multiple ways), the answer I'd be looking for, speaking as someone who has conducted hundreds of interviews, would be something along the lines of:
"Well, maybe yes under some weird set of circumstances that aren't immediately obvious to me... but if I encountered this in real code then I would use common debugging techniques to figure out how and why it was doing what it was doing and then immediately refactor the code to avoid that situation... but more importantly: I would absolutely NEVER write that code in the first place because that is the very definition of convoluted code, and I strive to never write convoluted code".
I guess some interviewers would take offense to having what is obviously meant to be a very tricky question called out, but I don't mind developers who have an opinion, especially when they can back it up with reasoned thought and can dovetail my question into a meaningful statement about themselves.
Right I think I know what you mean so lets see....
<div id="con">
<div id="content">Results will go here</div>
<div id="footer">Footer will always be at the bottom</div>
</div>
html,
body {
margin:0;
padding:0;
height:100%;
}
div {
outline: 1px solid;
}
#con {
min-height:100%;
position:relative;
}
#content {
height: 1000px; /* Changed this height */
padding-bottom:60px;
}
#footer {
position:absolute;
bottom:0;
width:100%;
height:60px;
}
This demo have the height of contentheight: 1000px;
so you can see what it would look like scrolling down the bottom.
This demo has the height of content height: 100px;
so you can see what it would look like with no scrolling.
So this will move the footer below the div content
but if content is not bigger then the screen (no scrolling) the footer will sit at the bottom of the screen. Think this is what you want. Have a look and a play with it.
Updated fiddles so its easier to see with backgrounds.
Start your script with the following line. The script will first run and then you will get the python command prompt. At this point all variables and functions will be available for interactive use and invocations.
#!/usr/bin/env python -i
To augment other answers - if you have multiple custom compound views with the same ID and they are all being restored with the state of the last view on a configuration change, all you need to do is tell the view to only dispatch save/restore events to itself by overriding a couple of methods.
class MyCompoundView : ViewGroup {
...
override fun dispatchSaveInstanceState(container: SparseArray<Parcelable>) {
dispatchFreezeSelfOnly(container)
}
override fun dispatchRestoreInstanceState(container: SparseArray<Parcelable>) {
dispatchThawSelfOnly(container)
}
}
For an explanation of what is happening and why this works, see this blog post. Basically your compound view's children's view IDs are shared by each compound view and state restoration gets confused. By only dispatching state for the compound view itself, we prevent their children from getting mixed messages from other compound views.
Like this:
<c:forEach var="entry" items="${myMap}">
Key: <c:out value="${entry.key}"/>
Value: <c:out value="${entry.value}"/>
</c:forEach>
I got the same problem when I try to use FirstOrDefaultAsync()
in the async method in the code below. And when I fixed FirstOrDefault()
- the problem was solved!
_context.Issues.Add(issue);
await _context.SaveChangesAsync();
int userId = _context.Users
.Where(u => u.UserName == Options.UserName)
.FirstOrDefaultAsync()
.Id;
...
This is probably because an empty line at the end of your input file.
Try this:
for x in f:
try:
print int(x.strip(),16)
except ValueError:
print "Invalid input:", x
I used dir /s /b /o:n /a:d
, and it worked perfectly, just make sure you let the file finish writing, or you'll have an incomplete list.
First make sure that Dog
class implements the method public String toString()
then use
System.out.println(list.get(index))
where index is the position inside the list. Of course since you provide your implementation you can decide how dog prints itself.
0123456789 is not a valid integer (usually zeros will be stripped)
I think something like this regexp would be better to use:
^[1-9]([0-9]*)$
(does not support signed numbers)
I know this post is quite old, but still, if anyone using IntelliJ any want to see dependency tree directly in IDE then they can install Maven Helper Plugin plugin.
Once installed open pom.xml and you would able to see Dependency Analyze tab like below. It also provides option to see dependency that is conflicted only and also as a tree structure.
You can do it like:
string Camnr, Klantnr, Ordernr, Bonnr, Volgnr;// and so on.
Camnr = Klantnr = Ordernr = Bonnr = Volgnr = string.Empty;
First you have to define the variables and then you can use them.
For me it was really silly I had created a ModelClass file without the .php extension. So calling that was giving model not found. So check the extension has .php
just sudo pip install packagename
Ensures the path to Xcode.app bundle is without space or strange characters. I have Xcode installed in ~/Downloads/Last Dev Tools/ folder, so with spaces and renaming the folder to LastDevTools fixed this (after resetting xcode-select -p though)
You could also use a URI template. If you structured your request into a restful URL Spring could parse the provided value from the url.
HTML
<li>
<a id="byParameter"
class="textLink" href="<c:url value="/mapping/parameter/bar />">By path, method,and
presence of parameter</a>
</li>
Controller
@RequestMapping(value="/mapping/parameter/{foo}", method=RequestMethod.GET)
public @ResponseBody String byParameter(@PathVariable String foo) {
//Perform logic with foo
return "Mapped by path + method + presence of query parameter! (MappingController)";
}
You can try this.
func convertToJSONString(value: AnyObject) -> String? {
if JSONSerialization.isValidJSONObject(value) {
do{
let data = try JSONSerialization.data(withJSONObject: value, options: [])
if let string = NSString(data: data, encoding: String.Encoding.utf8.rawValue) {
return string as String
}
}catch{
}
}
return nil
}
This is how you can achieve your desired setup with Bootstrap 3:
<div class="container-fluid">
<div class="row"> <!-- Give this div your desired background color -->
<div class="container">
<div class="row">
<div class="col-md-12">
... your content here ...
</div>
</div>
</div>
</div>
</div>
The container-fluid
part makes sure that you can change the background over the full width. The container
part makes sure that your content is still wrapped in a fixed width.
This approach works, but personally I don't like all the nesting. However, I haven't found a better solution so far.
this is my first code on this site try this
import java.util.Scanner;
public class BATM {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
String username;
String password;
System.out.println("Log in:");
System.out.println("username: ");
username = input.next();
System.out.println("password: ");
password = input.next();
//users check = new users(username, password);
if(username.equals(username) && password.equals(password))
System.out.println("You are logged in");
}
}
With minimal editing to your code (Not sure if they've taught classes or not in your course), change:
def close_window(root):
root.destroy()
to
def close_window():
window.destroy()
and it should work.
Explanation:
Your version of close_window
is defined to expect a single argument, namely root
. Subsequently, any calls to your version of close_window
need to have that argument, or Python will give you a run-time error.
When you created a Button
, you told the button to run close_window
when it is clicked. However, the source code for Button widget is something like:
# class constructor
def __init__(self, some_args, command, more_args):
#...
self.command = command
#...
# this method is called when the user clicks the button
def clicked(self):
#...
self.command() # Button calls your function with no arguments.
#...
As my code states, the Button
class will call your function with no arguments. However your function is expecting an argument. Thus you had an error. So, if we take out that argument, so that the function call will execute inside the Button class, we're left with:
def close_window():
root.destroy()
That's not right, though, either, because root
is never assigned a value. It would be like typing in print(x)
when you haven't defined x
, yet.
Looking at your code, I figured you wanted to call destroy
on window
, so I changed root
to window
.
type=submit
it is a Submit Button type=button
it is just a button, It does not submit your form inputs. and also you don't want to use both of these
Java 8 Collection has a nice method called removeIf that makes things easier and safer. From the API docs:
default boolean removeIf(Predicate<? super E> filter)
Removes all of the elements of this collection that satisfy the given predicate.
Errors or runtime exceptions thrown during iteration or by the predicate
are relayed to the caller.
Interesting note:
The default implementation traverses all elements of the collection using its iterator().
Each matching element is removed using Iterator.remove().
if you are expecting them in a certain order, you can just use diff
diff file1 file2 | grep ">"
You should use <h:panelGroup ...>
tag with attribute rendered
. If you set true
to rendered, the content of <h:panelGroup ...>
won't be shown. Your XHTML file should have something like this:
<h:panelGroup rendered="#{userBean.showPassword}">
<h:outputText id="password" value="#{userBean.password}"/>
</h:panelGroup>
UserBean.java:
import javax.faces.bean.ManagedBean;
import javax.faces.bean.SessionScoped;
@ManagedBean
@SessionScoped
public class UserBean implements Serializable{
private boolean showPassword = false;
private String password = "";
public boolean isShowPassword(){
return showPassword;
}
public void setPassword(password){
this.password = password;
}
public String getPassword(){
return this.password;
}
}
You need to close all your connexions for example: If you make an INSERT INTO statement you need to close the statement and your connexion in this way:
statement.close();
Connexion.close():
And if you make a SELECT statement you need to close the statement, the connexion and the resultset in this way:
resultset.close();
statement.close();
Connexion.close();
I did this and it worked
If the data is coming from a database, as in my case, you can lower it before sending it to a select list/drop down list. Shame you can't do it in CSS.
Piere's answer is correct but one issue is that bulk_save_objects
by default does not return the primary keys of the objects, if that is of concern to you. Set return_defaults
to True
to get this behavior.
The documentation is here.
foos = [Foo(bar='a',), Foo(bar='b'), Foo(bar='c')]
session.bulk_save_objects(foos, return_defaults=True)
for foo in foos:
assert foo.id is not None
session.commit()
From Wikipedia (emphasis and link added):
When data that has been entered into HTML forms is submitted, the form field names and values are encoded and sent to the server in an HTTP request message using method GET or POST, or, historically, via email. The encoding used by default is based on a very early version of the general URI percent-encoding rules, with a number of modifications such as newline normalization and replacing spaces with "+" instead of "%20". The MIME type of data encoded this way is application/x-www-form-urlencoded, and it is currently defined (still in a very outdated manner) in the HTML and XForms specifications.
So, the real percent encoding uses %20
while form data in URLs is in a modified form that uses +
. So you're most likely to only see +
in URLs in the query string after an ?
.
User can use this
Dim todaysdate As String = String.Format("{0:dd/MM/yyyy}", DateTime.Now)
this will format the date as required whereas user can change the string type dd/MM/yyyy or MM/dd/yyyy or yyyy/MM/dd or even can have this format to get the time from date
yyyy/MM/dd HH:mm:ss
Take a look at the sqlcmd
utility. It allows you to execute SQL from the command line.
http://msdn.microsoft.com/en-us/library/ms162773.aspx
It's all in there in the documentation, but the syntax should look something like this:
sqlcmd -U myLogin -P myPassword -S MyServerName -d MyDatabaseName
-Q "DROP TABLE MyTable"
I am using unix system.
In eclipse project-> Properties -> Java Compiler -> Errors/Warning -> Forbidden Access(access rule) -> Turn it to warning/Ignore(Previously it was set to Error).
if(mas[i].indexOf("bird") == 0)
//there is bird
You.can read about indexOf here: http://www.w3schools.com/jsref/jsref_indexof.asp
You might want to check https://github.com/Thor1Khan/mongo.git it uses a minimal workaround the 32 bit atomic operations on 64 bits operands (could use assembly but it doesn't seem to be mandatory here) Only digital bugs were harmed before committing
In my case it only worked when I put not null
. I think this is a constraint.
ALTER TABLE document MODIFY COLUMN document_id INT NOT NULL AUTO_INCREMENT;
Several interesting answers. Since you just want a border bottom (or top) here are two more. Assuming you want a blue border 3px thick. In the style section you could add
.blueB {background-color:blue; height:3px} or
hr {background-color:blue; color:blue height:3px}
In the table code either
<tr><td colspan='3' class='blueB></td></tr> or
<tr><td colspan='3'><hr></td></tr>
plt.figure(figsize=(15,10))
graph = sns.barplot(x='name_column_x_axis', y="name_column_x_axis", data = dataframe_name , color="salmon")
for p in graph.patches:
graph.annotate('{:.0f}'.format(p.get_height()), (p.get_x()+0.3, p.get_height()),
ha='center', va='bottom',
color= 'black')
import { Injectable } from '@angular/core';
import * as $ from 'jquery';
interface Script {
src: string;
loaded: boolean;
}
@Injectable()
export class ScriptLoaderService {
public _scripts: Script[] = [];
/**
* @deprecated
* @param tag
* @param {string} scripts
* @returns {Promise<any[]>}
*/
load(tag, ...scripts: string[]) {
scripts.forEach((src: string) => {
if (!this._scripts[src]) {
this._scripts[src] = { src: src, loaded: false };
}
});
const promises: any[] = [];
scripts.forEach(src => promises.push(this.loadScript(tag, src)));
return Promise.all(promises);
}
/**
* Lazy load list of scripts
* @param tag
* @param scripts
* @param loadOnce
* @returns {Promise<any[]>}
*/
loadScripts(tag, scripts, loadOnce?: boolean) {
debugger;
loadOnce = loadOnce || false;
scripts.forEach((script: string) => {
if (!this._scripts[script]) {
this._scripts[script] = { src: script, loaded: false };
}
});
const promises: any[] = [];
scripts.forEach(script => promises.push(this.loadScript(tag, script, loadOnce)));
return Promise.all(promises);
}
/**
* Lazy load a single script
* @param tag
* @param {string} src
* @param loadOnce
* @returns {Promise<any>}
*/
loadScript(tag, src: string, loadOnce?: boolean) {
debugger;
loadOnce = loadOnce || false;
if (!this._scripts[src]) {
this._scripts[src] = { src: src, loaded: false };
}
return new Promise((resolve, _reject) => {
// resolve if already loaded
if (this._scripts[src].loaded && loadOnce) {
resolve({ src: src, loaded: true });
} else {
// load script tag
const scriptTag = $('<script/>')
.attr('type', 'text/javascript')
.attr('src', this._scripts[src].src);
$(tag).append(scriptTag);
this._scripts[src] = { src: src, loaded: true };
resolve({ src: src, loaded: true });
}
});
}
reloadOnSessionChange() {
window.addEventListener('storage', function(data) {
if (data['key'] === 'token' && data['oldValue'] == null && data['newValue']) {
document.location.reload();
}
});
}
}
You have to use a negative lookahead assertion.
(?!^ABC$)
You could for example use the following.
(?!^ABC$)(^.*$)
If this does not work in your editor, try this. It is tested to work in ruby and javascript:
^((?!ABC).)*$
using an ISNULL is the best way I found of getting round the NULL in dates :
ISNULL(CASE WHEN CONVERT(DATE, YOURDate) = '1900-01-01' THEN '' ELSE CONVERT(CHAR(10), YOURDate, 103) END, '') AS [YOUR Date]
To those in the answer above. It's definitely JavaScript. It's just inline.
BTW the jQuery equivalent if you want to apply to all selects:
$('form select').on('change', function(){
$(this).closest('form').submit();
});
C++17: Yes! You should use a structured binding declaration. The syntax has been supported in gcc and clang since gcc-7 and clang-4.0 (clang live example). This allows us to unpack a tuple like so:
for (auto [i, f, s] = std::tuple{1, 1.0, std::string{"ab"}}; i < N; ++i, f += 1.5) {
// ...
}
The above will give you:
int i
set to 1
double f
set to 1.0
std::string s
set to "ab"
Make sure to #include <tuple>
for this kind of declaration.
You can specify the exact types inside the tuple
by typing them all out as I have with the std::string
, if you want to name a type. For example:
auto [vec, i32] = std::tuple{std::vector<int>{3, 4, 5}, std::int32_t{12}}
A specific application of this is iterating over a map, getting the key and value,
std::unordered_map<K, V> m = { /*...*/ };
for (auto& [key, value] : m) {
// ...
}
See a live example here
C++14: You can do the same as C++11 (below) with the addition of type-based std::get
. So instead of std::get<0>(t)
in the below example, you can have std::get<int>(t)
.
C++11: std::make_pair
allows you to do this, as well as std::make_tuple
for more than two objects.
for (auto p = std::make_pair(5, std::string("Hello World")); p.first < 10; ++p.first) {
std::cout << p.second << std::endl;
}
std::make_pair
will return the two arguments in a std::pair
. The elements can be accessed with .first
and .second
.
For more than two objects, you'll need to use a std::tuple
for (auto t = std::make_tuple(0, std::string("Hello world"), std::vector<int>{});
std::get<0>(t) < 10;
++std::get<0>(t)) {
std::cout << std::get<1>(t) << std::endl; // cout Hello world
std::get<2>(t).push_back(std::get<0>(t)); // add counter value to the vector
}
std::make_tuple
is a variadic template that will construct a tuple of any number of arguments (with some technical limitations of course). The elements can be accessed by index with std::get<INDEX>(tuple_object)
Within the for loop bodies you can easily alias the objects, though you still need to use .first
or std::get
for the for loop condition and update expression
for (auto t = std::make_tuple(0, std::string("Hello world"), std::vector<int>{});
std::get<0>(t) < 10;
++std::get<0>(t)) {
auto& i = std::get<0>(t);
auto& s = std::get<1>(t);
auto& v = std::get<2>(t);
std::cout << s << std::endl; // cout Hello world
v.push_back(i); // add counter value to the vector
}
C++98 and C++03 You can explicitly name the types of a std::pair
. There is no standard way to generalize this to more than two types though:
for (std::pair<int, std::string> p(5, "Hello World"); p.first < 10; ++p.first) {
std::cout << p.second << std::endl;
}
Or with a constructor
& linq
with Select
:
public class TargetType {
public string Prop1 {get;set;}
public string Prop1 {get;set;}
// Constructor
public TargetType(OrigType origType) {
Prop1 = origType.Prop1;
Prop2 = origType.Prop2;
}
}
var origList = new List<OrigType>();
var targetList = origList.Select(s=> new TargetType(s)).ToList();
The Linq
line is more soft! ;-)
My fix was to create Platform in configuration manager in visual studio, and set to x64
I had the same problem, I just deleted all log files in mysql/data files like:
mysql-relay-bin - 2020@002d...
Just these files and it worked.
I hope this helps.
Actually super easy with management plugin and policies:
Goto Management Console (localhost:15672)
Goto Admin tab
Goto Policies tab(on the right side)
Add Policy
Fill Fields
Save
Checkout Queues tab again
All Queues must be deleted
And don't forget to remove policy!!!!!!.
The problem with Javascript's MIME type is that there hasn't been a standard for years. Now we've got application/javascript as an official MIME type.
But actually, the MIME type doesn't matter at all, as the browser can determine the type itself. That's why the HTML5 specs state that the type="text/javascript"
is no longer required.
In mysql 5.7.x(replication) this issue can happen because the on the slave user either the password is unmatched or the root user does not exists on master.
For example(in my case):
I created an instance, altered password for the root and before replicating the slave, I dropped the root user. When I made the slave instance this alert appeared on the query: (because I altered the password on master before dropping the root user, and slave was reading from the first log which was actually an alter root user statement)
show slave status\G
So there are 2 solutions that can be applied here:
reset master;
and reconnect slave to master.
You can just initialize via a constructor:
struct address {
address() : city("Hamilton"), prov("Ontario") {}
int street_no;
char *street_name;
char *city;
char *prov;
char *postal_code;
};
Adding to the solutions of others, I'd like to suggest using the plotly
package for R
, as this has worked well for me.
Below, I'm using the reformatted dataset suggested above, from xyz-tripplets to axis vectors x and y and a matrix z:
x <- 1:5/10
y <- 1:5
z <- x %o% y
z <- z + .2*z*runif(25) - .1*z
library(plotly)
plot_ly(x=x,y=y,z=z, type="surface")
The rendered surface can be rotated and scaled using the mouse. This works fairly well in RStudio.
You can also try it with the built-in volcano
dataset from R
:
plot_ly(z=volcano, type="surface")
My full example is here, but I will provide a summary below.
Layout
Add a .swift and .xib file each with the same name to your project. The .xib file contains your custom view layout (using auto layout constraints preferably).
Make the swift file the xib file's owner.
Add the following code to the .swift file and hook up the outlets and actions from the .xib file.
import UIKit
class ResuableCustomView: UIView {
let nibName = "ReusableCustomView"
var contentView: UIView?
@IBOutlet weak var label: UILabel!
@IBAction func buttonTap(_ sender: UIButton) {
label.text = "Hi"
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
guard let view = loadViewFromNib() else { return }
view.frame = self.bounds
self.addSubview(view)
contentView = view
}
func loadViewFromNib() -> UIView? {
let bundle = Bundle(for: type(of: self))
let nib = UINib(nibName: nibName, bundle: bundle)
return nib.instantiate(withOwner: self, options: nil).first as? UIView
}
}
Use it
Use your custom view anywhere in your storyboard. Just add a UIView
and set the class name to your custom class name.
For a while Christopher Swasey's approach was the best approach I had found. I asked a couple of the senior devs on my team about it and one of them had the perfect solution! It satisfies every one of the concerns that Christopher Swasey so eloquently addressed and it doesn't require boilerplate subclass code(my main concern with his approach). There is one gotcha, but other than that it is fairly intuitive and easy to implement.
MyCustomClass.swift
MyCustomClass.xib
File's Owner
of the .xib file to be your custom class (MyCustomClass
)class
value (under the identity Inspector
) for your custom view in the .xib file blank. So your custom view will have no specified class, but it will have a specified File's Owner.Assistant Editor
.
Connections Inspector
you will notice that your Referencing Outlets do not reference your custom class (i.e. MyCustomClass
), but rather reference File's Owner
. Since File's Owner
is specified to be your custom class, the outlets will hook up and work propery. NibLoadable
protocol referenced below.
.swift
file name is different from your .xib
file name, then set the nibName
property to be the name of your .xib
file.required init?(coder aDecoder: NSCoder)
and override init(frame: CGRect)
to call setupFromNib()
like the example below.MyCustomClass
).Here is the protocol you will want to reference:
public protocol NibLoadable {
static var nibName: String { get }
}
public extension NibLoadable where Self: UIView {
public static var nibName: String {
return String(describing: Self.self) // defaults to the name of the class implementing this protocol.
}
public static var nib: UINib {
let bundle = Bundle(for: Self.self)
return UINib(nibName: Self.nibName, bundle: bundle)
}
func setupFromNib() {
guard let view = Self.nib.instantiate(withOwner: self, options: nil).first as? UIView else { fatalError("Error loading \(self) from nib") }
addSubview(view)
view.translatesAutoresizingMaskIntoConstraints = false
view.leadingAnchor.constraint(equalTo: self.safeAreaLayoutGuide.leadingAnchor, constant: 0).isActive = true
view.topAnchor.constraint(equalTo: self.safeAreaLayoutGuide.topAnchor, constant: 0).isActive = true
view.trailingAnchor.constraint(equalTo: self.safeAreaLayoutGuide.trailingAnchor, constant: 0).isActive = true
view.bottomAnchor.constraint(equalTo: self.safeAreaLayoutGuide.bottomAnchor, constant: 0).isActive = true
}
}
And here is an example of MyCustomClass
that implements the protocol (with the .xib file being named MyCustomClass.xib
):
@IBDesignable
class MyCustomClass: UIView, NibLoadable {
@IBOutlet weak var myLabel: UILabel!
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
setupFromNib()
}
override init(frame: CGRect) {
super.init(frame: frame)
setupFromNib()
}
}
NOTE: If you miss the Gotcha and set the class
value inside your .xib file to be your custom class, then it will not draw in the storyboard and you will get a EXC_BAD_ACCESS
error when you run the app because it gets stuck in an infinite loop of trying to initialize the class from the nib using the init?(coder aDecoder: NSCoder)
method which then calls Self.nib.instantiate
and calls the init
again.
I had same issue and I solved it by "pod setup" after installing cocoapods.
There are two differences between static inner and non static inner classes.
In case of declaring member fields and methods, non static inner class cannot have static fields and methods. But, in case of static inner class, can have static and non static fields and method.
The instance of non static inner class is created with the reference of object of outer class, in which it has defined, this means it has enclosing instance. But the instance of static inner class is created without the reference of Outer class, which means it does not have enclosing instance.
See this example
class A
{
class B
{
// static int x; not allowed here
}
static class C
{
static int x; // allowed here
}
}
class Test
{
public static void main(String… str)
{
A a = new A();
// Non-Static Inner Class
// Requires enclosing instance
A.B obj1 = a.new B();
// Static Inner Class
// No need for reference of object to the outer class
A.C obj2 = new A.C();
}
}
The maximum safe UDP payload is 508 bytes. This is a packet size of 576 (the "minimum maximum reassembly buffer size"), minus the maximum 60-byte IP header and the 8-byte UDP header.
Any UDP payload this size or smaller is guaranteed to be deliverable over IP (though not guaranteed to be delivered). Anything larger is allowed to be outright dropped by any router for any reason. Except on an IPv6-only route, where the maximum payload is 1,212 bytes. As others have mentioned, additional protocol headers could be added in some circumstances. A more conservative value of around 300-400 bytes may be preferred instead.
The maximum possible UDP payload is 67 KB, split into 45 IP packets, adding an additional 900 bytes of overhead (IPv4, MTU 1500, minimal 20-byte IP headers).
Any UDP packet may be fragmented. But this isn't too important, because losing a fragment has the same effect as losing an unfragmented packet: the entire packet is dropped. With UDP, this is going to happen either way.
IP packets include a fragment offset field, which indicates the byte offset of the UDP fragment in relation to its UDP packet. This field is 13-bit, allowing 8,192 values, which are in 8-byte units. So the range of such offsets an IP packet can refer to is 0...65,528 bytes. Being an offset, we add 1,480 for the last UDP fragment to get 67,008. Minus the UDP header in the first fragment gives us a nice, round 67 KB.
Sources: RFC 791, RFC 1122, RFC 2460
As already stated both System.Threading.Timer
and System.Timers.Timer
will work. The big difference between the two is that System.Threading.Timer
is a wrapper arround the other one.
System.Threading.Timer
will have more exception handling whileSystem.Timers.Timer
will swallow all the exceptions.
This gave me big problems in the past so I would always use 'System.Threading.Timer' and still handle your exceptions very well.
The user agent string is a text that the browsers themselves send to the webserver to identify themselves, so that websites can send different content based on the browser or based on browser compatibility.
Mozilla is a browser rendering engine (the one at the core of Firefox) and the fact that Chrome and IE contain the string Mozilla/4 or /5 identifies them as being compatible with that rendering engine.
You can use the ToolTip class:
Creating a ToolTip for a Control
Example:
private void Form1_Load(object sender, System.EventArgs e)
{
System.Windows.Forms.ToolTip ToolTip1 = new System.Windows.Forms.ToolTip();
ToolTip1.SetToolTip(this.Button1, "Hello");
}
A better one using explode()
function is as follows...
Don't forget to replace your URL variable in the hyperlink href
.
<?php
if($url != ''){
$b = '';
$links = explode('/',rtrim($url,'/'));
foreach($links as $l){
$b .= $l;
if($url == $b){
echo $l;
}else{
echo "<a href='URL?url=".$b."'>".$l."/</a>";
}
$b .= '/';
}
}
?>
"Chrome violations" don't represent errors in either Chrome or your own web app. They are instead warnings to help you improve your app. In this case, Long running JavaScript
and took 83ms of runtime
are alerting you there's probably an opportunity to speed up your script.
("Violation" is not the best terminology; it's used here to imply the script "violates" a pre-defined guideline, but "warning" or similar would be clearer. These messages first appeared in Chrome in early 2017 and should ideally have a "More info" prompt to elaborate on the meaning and give suggested actions to the developer. Hopefully those will be added in the future.)
In cases where I use floated elements like that, I usually need to be sure that the container element will always be big enough for the widths of both floated elements plus the desired margin to all fit inside of it. The easiest way to do that is obviously to give both inner elements fixed widths that will fit correctly inside of the outer element like this:
#container {width: 960px;}
#element1 {float:left; width:745px; margin-right:15px;}
#element2 {float:right; width:200px;}
If you can't do that because this is a scaling width layout, another option is to have every set of dimensions be percentages like:
#element1 {float:left; width:70%; margin-right:10%}
#element2 {float:right; width:20%;}
This gets tricky where you need something like this:
#element1 {float:left; width:70%; margin-right:10%}
#element2 {float:right; width:200px;}
In cases like that, I find that sometimes the best option is to not use floats, and use relative/absolute positioning to get the same effect like this:
#container {position:relative;} /* So IE won't bork the absolute positioning of #element2 */
#element1 {margin-right:215px;}
#element2 {display: block; position:absolute; top:0; right:0; height:100%; width:200px;}
While this isn't a floated solution, it does result in side by side columns where they are the same height, and one can remain fluid with while the other has a static width.
You can use HttpClient and HttpPost to send a json string as body:
public void post(String completeUrl, String body) {
HttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(completeUrl);
httpPost.setHeader("Content-type", "application/json");
try {
StringEntity stringEntity = new StringEntity(body);
httpPost.getRequestLine();
httpPost.setEntity(stringEntity);
httpClient.execute(httpPost);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
Json body example:
{
"param1": "value 1",
"param2": 123,
"testStudentArray": [
{
"name": "Test Name 1",
"gpa": 3.5
},
{
"name": "Test Name 2",
"gpa": 3.8
}
]
}
import java.io.IOException;
import java.lang.ProcessBuilder;
public class handlingexe {
public static void main(String[] args) throws IOException {
ProcessBuilder p = new ProcessBuilder();
System.out.println("Started EXE");
p.command("C:\\Users\\AppData\\Local\\Google\\Chrome\\Application\\chrome.exe");
p.start();
System.out.println("Started EXE");
}
}
The WCF API in .NET handles missing parameters by returning an HTTP 404
"Endpoint Not Found" error, when using the webHttpBinding.
The 404 Not Found
can make sense if you consider your web service method name together with its parameter signature. That is, if you expose a web service method LoginUser(string, string)
and you request LoginUser(string)
, the latter is not found.
Basically this would mean that the web service method you are calling, together with the parameter signature you specified, cannot be found.
10.4.5 404 Not Found
The server has not found anything matching the Request-URI. No indication is given of whether the condition is temporary or permanent.
The 400 Bad Request
, as Gert suggested, remains a valid response code, but I think it is normally used to indicate lower-level problems. It could easily be interpreted as a malformed HTTP request, maybe missing or invalid HTTP headers, or similar.
10.4.1 400 Bad Request
The request could not be understood by the server due to malformed syntax. The client SHOULD NOT repeat the request without modifications.
The WM_CONCAT
function (if included in your database, pre Oracle 11.2) or LISTAGG
(starting Oracle 11.2) should do the trick nicely. For example, this gets a comma-delimited list of the table names in your schema:
select listagg(table_name, ', ') within group (order by table_name)
from user_tables;
or
select wm_concat(table_name)
from user_tables;
This might help? :)
Just search for the character at index 0 and compare it against the value you're looking for!
DBCP is out of date and not production grade. Some time back we conducted an in-house analysis of the two, creating a test fixture which generated load and concurrency against the two to assess their suitability under real life conditions.
DBCP consistently generated exceptions into our test application and struggled to reach levels of performance which C3P0 was more than capable of handling without any exceptions.
C3P0 also robustly handled DB disconnects and transparent reconnects on resume whereas DBCP never recovered connections if the link was taken out from beneath it. Worse still DBCP was returning Connection objects to the application for which the underlying transport had broken.
Since then we have used C3P0 in 4 major heavy-load consumer web apps and have never looked back.
UPDATE: It turns out that after many years of sitting on a shelf, the Apache Commons folk have taken DBCP out of dormancy and it is now, once again, an actively developed project. Thus my original post may be out of date.
That being said, I haven't yet experienced this new upgraded library's performance, nor heard of it being de-facto in any recent app framework, yet.
In the latest version of Angular, this is set in the angular.json
config file. Example:
{
"$schema": "./node_modules/@angular/cli/lib/config/schema.json",
"projects": {
"my-project": {
"architect": {
"serve": {
"options": {
"port": 4444
}
}
}
}
}
}
You can also use ng config
to view/edit values:
ng config projects["my-project"].architect["serve"].options {port:4444}
In previous versions, this was set in angular-cli.json
underneath the defaults
element:
{
"defaults": {
"serve": {
"port": 4444,
"host": "10.1.2.3"
}
}
}
As the error message says in the last line: the module models
in the file c:\projects\mysite..\mysite\polls\models.py
contains no class model
. This error occurs in the definition of the Poll
class:
class Poll(models.model):
Either the class model
is misspelled in the definition of the class Poll
or it is misspelled in the module models
. Another possibility is that it is completely missing from the module models
. Maybe it is in another module or it is not yet implemented in models
.
Yes! In your settings.py define the following
LOGIN_REDIRECT_URL = '/your-path'
And have '/your-path' be a simple View that looks up self.request.user
and does whatever logic it needs to return a HttpResponseRedirect
object.
A better way might be to define a simple URL like '/simple'
that does the lookup logic there. The URL looks more beautiful, saves you some work, etc.
Simply saying top down approach uses recursion for calling Sub problems again and again
where as bottom up approach use the single without calling any one and hence it is more efficient.
This works for me.
Bitmap myBitmap;
BitmapFactory.Options options = new BitmapFactory.Options();
options.InPurgeable = true;
options.OutHeight = 50;
options.OutWidth = 50;
options.InSampleSize = 4;
File imgFile = new File(filepath);
myBitmap = BitmapFactory.DecodeFile(imgFile.AbsolutePath, options);
and this is on C# monodroid. you can easily change the path of the image. what important here is the options to be set.
You can use Authorization Policy in Startup.cs
services.AddAuthorization(options =>
{
options.AddPolicy("admin", policy => policy.RequireRole("SuperAdmin","Admin"));
options.AddPolicy("teacher", policy => policy.RequireRole("SuperAdmin", "Admin", "Teacher"));
});
And in Controller Files:
[Authorize(Policy = "teacher")]
[HttpGet("stats/{id}")]
public async Task<IActionResult> getStudentStats(int id)
{ ... }
"teacher" policy accept 3 roles.
Composite primary keys are what you want where you want to create a many to many relationship with a fact table. For example, you might have a holiday rental package that includes a number of properties in it. On the other hand, the property could also be available as a part of a number of rental packages, either on its own or with other properties. In this scenario, you establish the relationship between the property and the rental package with a property/package fact table. The association between a property and a package will be unique, you will only ever join using property_id with the property table and/or package_id with the package table. Each relationship is unique and an auto_increment key is redundant as it won't feature in any other table. Hence defining the composite key is the answer.
CN refers to class name, so put in your LDAP query CN=Users. Should work.
I got this error when my server process got an exception midway during generating the response and simply closed the connection without saying goodbye. curl still expected data from the connection and complained (rightfully).
Hi according to our test between 2 different servers the results are as follows:
using curl for checking 10 .png files (each about 5 mb) was on average 5.7 secs. using header check for the same thing took average of 7.8 seconds!
So in our test curl was much faster if you have to check larger files!
our curl function is:
function remote_file_exists($url){
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_NOBODY, true);
curl_exec($ch);
$httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
if( $httpCode == 200 ){return true;}
return false;
}
here is our header check sample:
function UR_exists($url){
$headers=get_headers($url);
return stripos($headers[0],"200 OK")?true:false;
}
The value
attribute is used to determine the rendered label of a submit input.
<input type="submit" class="like" value="Like" />
Note that if the control is successful (this one won't be as it has no name
) this will also be the submitted value for it.
To have a different submitted value and label you need to use a button element, in which the textNode inside the element determines the label. You can include other elements (including <img>
here).
<button type="submit" class="like" name="foo" value="bar">Like</button>
Note that support for <button>
is dodgy in older versions of Internet Explorer.
While on the upper line in normal mode, hit Shift+j.
You can prepend a count too, so 3J
on the top line would join all those lines together.
If you dont have phpMyAdmin
, you can write in php CLI commands such as login to mysql and perform db dump. In this case you would use shell_exec
function.
Fixed the code for you:
ArrayList<Class> myArray= new ArrayList<Class>();
Have you tried just adding another Include
:
Course course = db.Courses
.Include(i => i.Modules.Select(s => s.Chapters))
.Include(i => i.Lab)
.Single(x => x.Id == id);
Your solution fails because Include
doesn't take a boolean operator
Include(i => i.Modules.Select(s => s.Chapters) && i.Lab)
^^^ ^ ^
list bool operator other list
Update To learn more, download LinqPad and look through the samples. I think it is the quickest way to get familiar with Linq and Lambda.
As a start - the difference between Select
and Include
is that that with a Select you decide what you want to return (aka projection). The Include is a Eager Loading function, that tells Entity Framework that you want it to include data from other tables.
The Include syntax can also be in string. Like this:
db.Courses
.Include("Module.Chapter")
.Include("Lab")
.Single(x => x.Id == id);
But the samples in LinqPad explains this better.
Hope this help you!
sqlcmd -u UserName -s <ServerName\InstanceName> -i U:\<Path>\script.sql
info frame
to show the stack frame info
To read the memory at given addresses you should take a look at x
x/x $esp
for hex x/d $esp
for signed x/u $esp
for unsigned etc. x uses the format syntax, you could also take a look at the current instruction via x/i $eip
etc.
xhr.file = file;
; the file object is not supposed to be attached this way.xhr.send(file)
doesn't send the file. You have to use the FormData
object to wrap the file into a multipart/form-data
post data object:
var formData = new FormData();
formData.append("thefile", file);
xhr.send(formData);
After that, the file can be access in $_FILES['thefile']
(if you are using PHP).
Remember, MDC and Mozilla Hack demos are your best friends.
EDIT: The (2) above was incorrect. It does send the file, but it would send it as raw post data. That means you would have to parse it yourself on the server (and it's often not possible, depend on server configuration). Read how to get raw post data in PHP here.
Had same problem with some non-licensed cables. Works fine with Apple's & Belkin's USB cables.
If you get this error while working in detached HEAD mode, you can do this:
git push origin HEAD:remote-branch-name
See also: Making a Git push from a detached head
If you are on a different local branch than the remote branch, you can do this:
git push origin local-branch-name:remote-branch-name
A great way to do it for a simple image is to do it using only CSS to set the background of the HTML element like so.
HTML {_x000D_
background: url('http://www.earthtimes.org/newsimage/eat-lead-by-example-obesity-expert-tells-parents_139.jpg');_x000D_
width: 100%;_x000D_
height: 100%;_x000D_
}
_x000D_
If you want to get fancy, and set its opacity, then, in IE9+*, you can set a transparent background color of the body. This works by overlaying semitransparent white to make the image whiter, and appear to be brighter. For example, white with 75% opacity (rgba(255,255,255,.75)
) would produce the following effect.
HTML {_x000D_
background: url('http://www.earthtimes.org/newsimage/eat-lead-by-example-obesity-expert-tells-parents_139.jpg');_x000D_
width: 100%;_x000D_
height: 100%;_x000D_
position: relative;_x000D_
}_x000D_
_x000D_
body {_x000D_
width: 100%;_x000D_
min-height: 100%;_x000D_
position: absolute;_x000D_
top: 0;_x000D_
left: 0;_x000D_
margin: 0;_x000D_
background: rgba(255, 255, 255, .75);_x000D_
}
_x000D_
<p>Lorem ipsum dolor sit amet, et id, maecenas a convallis, elit facilisi congue augue id ac. Suscipit luctus egestas rutrum, amet tincidunt porttitor ante convallis magna, vivamus amet at turpis, ante lacinia blandit vel metus mauris rutrum. Ipsum nam adipiscing._x000D_
Est sapien quis sem vestibulum, quis cubilia turpis, suspendisse mattis vehicula enim risus pede, placerat suspendisse dui. Convallis nostrud pede, mollit lobortis, ornare ipsum tempor faucibus tortor, vel pede, porttitor nulla nonummy vestibulum purus._x000D_
Eros placerat tenetur augue ipsum aliquam, pellentesque congue condimentum sed vitae lectus.</p>_x000D_
<p>Aliquam venenatis curabitur pellentesque sociosqu quam. Tincidunt id erat vestibulum in, est fermentum ipsum et augue, nascetur etiam. Lorem elit, sed donec, leo vivamus ac id enim faucibus vel. Nullam sit feugiat sed massa consectetuer auctor, nulla_x000D_
et erat lacinia nec, eget ut ante nullam est non in, elit porttitor in in donec eget porttitor. Interdum ultricies sem morbi facilisis nibh erat. Id suspendisse, sed tincidunt fringilla sit, sapien odio vel, at culpa augue sed taciti neque inceptos,_x000D_
massa class non. Vel tristique condimentum at pellentesque, commodo nulla sagittis rhoncus lorem. Viverra maecenas tellus pretium urna mauris proin, vel libero morbi, ante volutpat vestibulum augue. Itaque leo mauris turpis, vivamus nisl congue nisl_x000D_
nulla in turpis, eget vitae accumsan dolor ipsum leo venenatis, feugiat vehicula in risus, donec eu pede vivamus itaque nam. Justo amet vitae pellentesque sed, posuere fusce sapien, sed nam placerat libero sed etiam curabitur, suspendisse justo, amet_x000D_
porttitor.</p>_x000D_
<p>Condimentum eget. Sem elementum a et mauris sem a, velit justo consectetuer in turpis mauris, sit sed elit cum, fusce suspendisse pretium dictum, mattis dui tortor tellus. Volutpat ut ante lorem nec laoreet aliquam, lorem est magna amet, integer mauris_x000D_
purus tellus. Porta enim repellendus aliquam eros. Turpis posuere elementum suscipit wisi lobortis, nec nunc consequat dictum ut unde at, mi lorem amet nunc. Cubilia pede, integer dolor, eget platea felis elit enim rhoncus, integer proin quam in ipsum_x000D_
lorem, diam curabitur netus pretium pellentesque. Donec rutrum ultrices placerat, curabitur maecenas, feugiat pede varius accumsan quam lorem, dui et dictumst asperiores nulla, vivamus urna nam leo libero. Posuere non convallis amet justo parturient,_x000D_
imperdiet consectetuer arcu praesent cursus risus, quis pretium dolor.</p>
_x000D_
position: relative
, while the body is position: absolute
. This is to prevent the background color of the body from behaving more like a highlighter of the text in the body.This could even be expanded to something comparable to, but still very distinct from, CSS filters by changing around the body's RGBA color background. For example, rgba(0,255,0,.75)
would create a very green tint as you can see in the code snippet.
HTML {_x000D_
background: url('http://www.earthtimes.org/newsimage/eat-lead-by-example-obesity-expert-tells-parents_139.jpg');_x000D_
width: 100%;_x000D_
height: 100%;_x000D_
position: relative;_x000D_
}_x000D_
body {_x000D_
width: 100%;_x000D_
min-height: 100%;_x000D_
position: absolute;_x000D_
top: 0;_x000D_
left: 0;_x000D_
margin: 0;_x000D_
background: rgba(0,255,0,.75);_x000D_
}
_x000D_
<p>Aliquam venenatis curabitur pellentesque sociosqu quam. Tincidunt id erat vestibulum in, est fermentum ipsum et augue, nascetur etiam. Lorem elit, sed donec, leo vivamus ac id enim faucibus vel. Nullam sit feugiat sed massa consectetuer auctor, nulla et erat lacinia nec, eget ut ante nullam est non in, elit porttitor in in donec eget porttitor. Interdum ultricies sem morbi facilisis nibh erat. Id suspendisse, sed tincidunt fringilla sit, sapien odio vel, at culpa augue sed taciti neque inceptos, massa class non. Vel tristique condimentum at pellentesque, commodo nulla sagittis rhoncus lorem. Viverra maecenas tellus pretium urna mauris proin, vel libero morbi, ante volutpat vestibulum augue. Itaque leo mauris turpis, vivamus nisl congue nisl nulla in turpis, eget vitae accumsan dolor ipsum leo venenatis, feugiat vehicula in risus, donec eu pede vivamus itaque nam. Justo amet vitae pellentesque sed, posuere fusce sapien, sed nam placerat libero sed etiam curabitur, suspendisse justo, amet porttitor.</p>_x000D_
<p>Condimentum eget. Sem elementum a et mauris sem a, velit justo consectetuer in turpis mauris, sit sed elit cum, fusce suspendisse pretium dictum, mattis dui tortor tellus. Volutpat ut ante lorem nec laoreet aliquam, lorem est magna amet, integer mauris purus tellus. Porta enim repellendus aliquam eros. Turpis posuere elementum suscipit wisi lobortis, nec nunc consequat dictum ut unde at, mi lorem amet nunc. Cubilia pede, integer dolor, eget platea felis elit enim rhoncus, integer proin quam in ipsum lorem, diam curabitur netus pretium pellentesque. Donec rutrum ultrices placerat, curabitur maecenas, feugiat pede varius accumsan quam lorem, dui et dictumst asperiores nulla, vivamus urna nam leo libero. Posuere non convallis amet justo parturient, imperdiet consectetuer arcu praesent cursus risus, quis pretium dolor.</p>_x000D_
<p>Lorem ipsum dolor sit amet, et id, maecenas a convallis, elit facilisi congue augue id ac. Suscipit luctus egestas rutrum, amet tincidunt porttitor ante convallis magna, vivamus amet at turpis, ante lacinia blandit vel metus mauris rutrum. Ipsum nam adipiscing. Est sapien quis sem vestibulum, quis cubilia turpis, suspendisse mattis vehicula enim risus pede, placerat suspendisse dui. Convallis nostrud pede, mollit lobortis, ornare ipsum tempor faucibus tortor, vel pede, porttitor nulla nonummy vestibulum purus. Eros placerat tenetur augue ipsum aliquam, pellentesque congue condimentum sed vitae lectus.</p>
_x000D_
rgba(0,255,0,.75)
as something exemplified by {red:0, green:255, blue:0, alpha:'75%'}
.*A full compatibility table can be found at Can I Use. However, please also note that you need to click the "Show All" to see that IE9 supports it.
Since I have already answered the question but I have more I want to add, I am titling this section addendum and having it add some potentially helpful information. So, to extrapolate even further on the content above, you could use an SVG as a background image to do wicked awesome things. For example, you could create a loading screen background featuring a cool website icon as you can see in the example of a base64 encoded SVG below.
HTML {_x000D_
background: url('data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0idXRmLTgiPz48IURPQ1RZUEUgc3ZnIFBVQkxJQyAiLS8vVzNDLy9EVEQgU1ZHIDEuMS8vRU4iICJodHRwOi8vd3d3LnczLm9yZy9HcmFwaGljcy9TVkcvMS4xL0RURC9zdmcxMS5kdGQiPjxzdmcgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIiB3aWR0aD0iNDAwIiBoZWlnaHQ9IjQwMCIgdmVyc2lvbj0iMS4xIiB2aWV3Qm94PSIwIDAgMSAxIiBwcmVzZXJ2ZUFzcGVjdFJhdGlvPSJ4TWluWU1pbiIgYXJpYS1oaWRkZW49InRydWUiPjxnIGlkPSJrIj48ZGVmcz48bGluZWFyR3JhZGllbnQgaWQ9ImMiIGdyYWRpZW50VHJhbnNmb3JtPSJyb3RhdGUoLTEyMCkiIHRyYW5zZm9ybS1vcmlnaW49Ii41LjUiPjxzdG9wIG9mZnNldD0iMCUiIHN0b3AtY29sb3I9InJnYmEoMCwwLDAsLjYpIi8+PHN0b3Agb2Zmc2V0PSI0NyUiIHN0b3AtY29sb3I9InJnYmEoMCwwLDAsLjYpIi8+PHN0b3Agb2Zmc2V0PSI1MyUiIHN0b3AtY29sb3I9InJnYmEoMCwwLDAsLjMpIi8+PHN0b3Agb2Zmc2V0PSIxMDAlIiBzdG9wLWNvbG9yPSJyZ2JhKDAsMCwwLC45KSIvPjxhbmltYXRlVHJhbnNmb3JtIGF0dHJpYnV0ZU5hbWU9ImdyYWRpZW50VHJhbnNmb3JtIiBhdHRyaWJ1dGVUeXBlPSJYTUwiIHR5cGU9InJvdGF0ZSIgZHVyPSI3MDAwbXMiIGZyb209IjAiIHRvPSIzNjAiIHJlcGVhdENvdW50PSJpbmRlZmluaXRlIi8+PC9saW5lYXJHcmFkaWVudD48cmFkaWFsR3JhZGllbnQgaWQ9ImQiIHI9Ii41IiBjeT0iLjUiIGN4PSIuNSI+PHN0b3Agb2Zmc2V0PSIzNSUiIHN0b3AtY29sb3I9ImJsYWNrIi8+PHN0b3Agb2Zmc2V0PSI1MCUiIHN0b3AtY29sb3I9ImdyZXkiLz48c3RvcCBvZmZzZXQ9IjY1JSIgc3RvcC1jb2xvcj0iYmxhY2siLz48L3JhZGlhbEdyYWRpZW50PjxyYWRpYWxHcmFkaWVudCBpZD0iZSIgcj0iLjUiIGN5PSIuNSIgY3g9Ii41Ij48c3RvcCBvZmZzZXQ9IjAlIiBzdG9wLWNvbG9yPSJ3aGl0ZSIvPjxzdG9wIG9mZnNldD0iMjUlIiBzdG9wLWNvbG9yPSJ5ZWxsb3ciLz48c3RvcCBvZmZzZXQ9Ijc1JSIgc3RvcC1jb2xvcj0ieWVsbG93Ii8+PHN0b3Agb2Zmc2V0PSIxMDAlIiBzdG9wLWNvbG9yPSJ3aGl0ZSIvPjwvcmFkaWFsR3JhZGllbnQ+PGNsaXBQYXRoIGlkPSJmIj48cGF0aCBzdHJva2U9ImdyZXkiIHN0cm9rZS13aWR0aD0iLjAxIiBpZD0iYiIgZD0iTS43NS43MUEuMzEuMzEgMCAxIDEgLjc1LjMxTC42OS4zOEEuMjIuMjIgMCAxIDAgLjY4LjY2TC41Ni41N0wuNi41MUwuODIuNjh6TS42LjYzQS4xNC4xNCAwIDEgMSAuNjIuNDJMLjY2LjM5QS4xOS4xOSAwIDEgMCAuNjQuNjZ6TS41NS41OEEuMDcuMDcgMCAxIDEgLjU2LjQ2TC42LjQzQS4xMi4xMiAwIDEgMCAuNTkuNjF6Ii8+PC9jbGlwUGF0aD48Y2xpcFBhdGggaWQ9ImciPjxwYXRoIHN0cm9rZT0iZ3JleSIgZmlsbD0icmVkIiBzdHJva2Utd2lkdGg9Ii4wMSIgZD0iTS42LjYzQS4xNC4xNCAwIDEgMSAuNjIuNDJMLjY2LjM5QS4xOS4xOSAwIDEgMCAuNjQuNjZ6Ii8+PC9jbGlwUGF0aD48L2RlZnM+PGcgY2xpcC1wYXRoPSJ1cmwoI2YpIiBmaWxsPSJ1cmwoI2MpIj48cmVjdCB4PSIwIiB5PSIwIiB3aWR0aD0iMSIgaGVpZ2h0PSIxIi8+PHJlY3QgeD0iMCIgeT0iMCIgd2lkdGg9IjEiIGhlaWdodD0iMSIgZmlsbD0icmVkIiBjbGlwLXBhdGg9InVybCgjZykiLz48L2c+PGcgdHJhbnNmb3JtPSJzY2FsZSgxLjEpIiB0cmFuc2Zvcm0tb3JpZ2luPSIuNS41Ij48dGV4dD48dGV4dFBhdGggaHJlZj0iI2IiIGZvbnQtc2l6ZT0iLjY1JSIgZm9udC1mYW1pbHk9Im1vbm9zcGFjZSIgbGV0dGVyLXNwYWNpbmc9Ii0uNSUiIHN0eWxlPSJ3aGl0ZS1zcGFjZTpwcmUiPiBZT1VSIDx0c3BhbiBmaWxsPSJyZWQiPkVYQU1QTEUgV0VCU0lURTwvdHNwYW4+IExPR088L3RleHRQYXRoPjwvdGV4dD48L2c+PC9nPjwvc3ZnPg==');_x000D_
width: 100%;_x000D_
height: 100%;_x000D_
position: relative;_x000D_
background-size: cover;_x000D_
}_x000D_
body {_x000D_
width: 100%;_x000D_
min-height: 100%;_x000D_
position: absolute;_x000D_
top: 0;_x000D_
left: 0;_x000D_
margin: 0;_x000D_
background: rgba(255,255,255,.5);_x000D_
}
_x000D_
<p>Condimentum eget. Sem elementum a et mauris sem a, velit justo consectetuer in turpis mauris, sit sed elit cum, fusce suspendisse pretium dictum, mattis dui tortor tellus. Volutpat ut ante lorem nec laoreet aliquam, lorem est magna amet, integer mauris purus tellus. Porta enim repellendus aliquam eros. Turpis posuere elementum suscipit wisi lobortis, nec nunc consequat dictum ut unde at, mi lorem amet nunc. Cubilia pede, integer dolor, eget platea felis elit enim rhoncus, integer proin quam in ipsum lorem, diam curabitur netus pretium pellentesque. Donec rutrum ultrices placerat, curabitur maecenas, feugiat pede varius accumsan quam lorem, dui et dictumst asperiores nulla, vivamus urna nam leo libero. Posuere non convallis amet justo parturient, imperdiet consectetuer arcu praesent cursus risus, quis pretium dolor.</p>_x000D_
<p>Lorem ipsum dolor sit amet, et id, maecenas a convallis, elit facilisi congue augue id ac. Suscipit luctus egestas rutrum, amet tincidunt porttitor ante convallis magna, vivamus amet at turpis, ante lacinia blandit vel metus mauris rutrum. Ipsum nam adipiscing. Est sapien quis sem vestibulum, quis cubilia turpis, suspendisse mattis vehicula enim risus pede, placerat suspendisse dui. Convallis nostrud pede, mollit lobortis, ornare ipsum tempor faucibus tortor, vel pede, porttitor nulla nonummy vestibulum purus. Eros placerat tenetur augue ipsum aliquam, pellentesque congue condimentum sed vitae lectus.</p>_x000D_
<p>Aliquam venenatis curabitur pellentesque sociosqu quam. Tincidunt id erat vestibulum in, est fermentum ipsum et augue, nascetur etiam. Lorem elit, sed donec, leo vivamus ac id enim faucibus vel. Nullam sit feugiat sed massa consectetuer auctor, nulla et erat lacinia nec, eget ut ante nullam est non in, elit porttitor in in donec eget porttitor. Interdum ultricies sem morbi facilisis nibh erat. Id suspendisse, sed tincidunt fringilla sit, sapien odio vel, at culpa augue sed taciti neque inceptos, massa class non. Vel tristique condimentum at pellentesque, commodo nulla sagittis rhoncus lorem. Viverra maecenas tellus pretium urna mauris proin, vel libero morbi, ante volutpat vestibulum augue. Itaque leo mauris turpis, vivamus nisl congue nisl nulla in turpis, eget vitae accumsan dolor ipsum leo venenatis, feugiat vehicula in risus, donec eu pede vivamus itaque nam. Justo amet vitae pellentesque sed, posuere fusce sapien, sed nam placerat libero sed etiam curabitur, suspendisse justo, amet porttitor.</p>
_x000D_
background-size: cover
CSS causes the SVG logo in the background to be resized to the size of the HTML element.I have been reading about using model concerns to skin-nize fat models as well as DRY up your model codes. Here is an explanation with examples:
Consider a Article model, a Event model and a Comment model. An article or an event has many comments. A comment belongs to either Article or Event.
Traditionally, the models may look like this:
Comment Model:
class Comment < ActiveRecord::Base
belongs_to :commentable, polymorphic: true
end
Article Model:
class Article < ActiveRecord::Base
has_many :comments, as: :commentable
def find_first_comment
comments.first(created_at DESC)
end
def self.least_commented
#return the article with least number of comments
end
end
Event Model
class Event < ActiveRecord::Base
has_many :comments, as: :commentable
def find_first_comment
comments.first(created_at DESC)
end
def self.least_commented
#returns the event with least number of comments
end
end
As we can notice, there is a significant piece of code common to both Event and Article. Using concerns we can extract this common code in a separate module Commentable.
For this create a commentable.rb file in app/models/concerns.
module Commentable
extend ActiveSupport::Concern
included do
has_many :comments, as: :commentable
end
# for the given article/event returns the first comment
def find_first_comment
comments.first(created_at DESC)
end
module ClassMethods
def least_commented
#returns the article/event which has the least number of comments
end
end
end
And now your models look like this :
Comment Model:
class Comment < ActiveRecord::Base
belongs_to :commentable, polymorphic: true
end
Article Model:
class Article < ActiveRecord::Base
include Commentable
end
Event Model:
class Event < ActiveRecord::Base
include Commentable
end
Consider a Event model. A event has many attenders and comments.
Typically, the event model might look like this
class Event < ActiveRecord::Base
has_many :comments
has_many :attenders
def find_first_comment
# for the given article/event returns the first comment
end
def find_comments_with_word(word)
# for the given event returns an array of comments which contain the given word
end
def self.least_commented
# finds the event which has the least number of comments
end
def self.most_attended
# returns the event with most number of attendes
end
def has_attendee(attendee_id)
# returns true if the event has the mentioned attendee
end
end
Models with many associations and otherwise have tendency to accumulate more and more code and become unmanageable. Concerns provide a way to skin-nize fat modules making them more modularized and easy to understand.
The above model can be refactored using concerns as below:
Create a attendable.rb
and commentable.rb
file in app/models/concerns/event folder
attendable.rb
module Attendable
extend ActiveSupport::Concern
included do
has_many :attenders
end
def has_attender(attender_id)
# returns true if the event has the mentioned attendee
end
module ClassMethods
def most_attended
# returns the event with most number of attendes
end
end
end
commentable.rb
module Commentable
extend ActiveSupport::Concern
included do
has_many :comments
end
def find_first_comment
# for the given article/event returns the first comment
end
def find_comments_with_word(word)
# for the given event returns an array of comments which contain the given word
end
module ClassMethods
def least_commented
# finds the event which has the least number of comments
end
end
end
And now using Concerns, your Event model reduces to
class Event < ActiveRecord::Base
include Commentable
include Attendable
end
* While using concerns its advisable to go for 'domain' based grouping rather than 'technical' grouping. Domain Based grouping is like 'Commentable', 'Photoable', 'Attendable'. Technical grouping will mean 'ValidationMethods', 'FinderMethods' etc
Not sure exactly what you try to denote with that syntax, but in almost all RDBMS-es you can use a subquery in the FROM clause (sometimes called an "inline-view"):
SELECT..
FROM (
SELECT ...
FROM ...
) my_select
WHERE ...
In advanced "enterprise" RDBMS-es (like oracle, SQL Server, postgresql) you can use common table expressions which allows you to refer to a query by name and reuse it even multiple times:
-- Define the CTE expression name and column list.
WITH Sales_CTE (SalesPersonID, SalesOrderID, SalesYear)
AS
-- Define the CTE query.
(
SELECT SalesPersonID, SalesOrderID, YEAR(OrderDate) AS SalesYear
FROM Sales.SalesOrderHeader
WHERE SalesPersonID IS NOT NULL
)
-- Define the outer query referencing the CTE name.
SELECT SalesPersonID, COUNT(SalesOrderID) AS TotalSales, SalesYear
FROM Sales_CTE
GROUP BY SalesYear, SalesPersonID
ORDER BY SalesPersonID, SalesYear;
(example from http://msdn.microsoft.com/en-us/library/ms190766(v=sql.105).aspx)
Barebones C program to produce the above error:
#include <iostream>
using namespace std;
int main(){
char *p;
*p = 'c';
cout << *p[0];
//error: invalid type argument of `unary *'
//peeking too deeply into p, that's a paddlin.
cout << **p;
//error: invalid type argument of `unary *'
//peeking too deeply into p, you better believe that's a paddlin.
}
ELI5:
The master puts a shiny round stone inside a small box and gives it to a student. The master says: "Open the box and remove the stone". The student does so.
Then the master says: "Now open the stone and remove the stone". The student said: "I can't open a stone".
The student was then enlightened.
I got this error when there were files in the Dockerfile
directory that were not accessible by the current user. docker
could thus not upload the full context to the daemon and brought the "Couldn't connect to Docker daemon at http+docker://localunixsocket" message.
Right click your project--->Build path---->configure Build path----> Libraries Tab--->Add External jars--->(Navigate to the location where you have kept the sql driver jar)--->ok
Just a wild guess: (not much to go on) but I have had similar problems when, for example, I was using the IIS rewrite module on my local machine (and it worked fine), but when I uploaded to a host that did not have that add-on module installed, I would get a 500 error with very little to go on - sounds similar. It drove me crazy trying to find it.
So make sure whatever options/addons that you might have and be using locally in IIS are also installed on the host.
Similarly, make sure you understand everything that is being referenced/used in your web.config - that is likely the problem area.
You can use the --system-site-packages
and then "overinstall" the specific stuff for your virtualenv. That way, everything you install into your virtualenv will be taken from there, otherwise it will be taken from your system.
git rev-parse --abbrev-ref HEAD
I've found the best implementation. It's in the Google I/O 2014 app.
They use the same approach as Kevin's. If you can abstract yourself from all unneeded stuff in I/O app, you could extract everything you need and it is assured by Google that it's a correct usage of navigation drawer pattern.
Each activity optionally has a DrawerLayout
as its main layout. The interesting part is how the navigation to other screens is done. It is implemented in BaseActivity
like this:
private void goToNavDrawerItem(int item) {
Intent intent;
switch (item) {
case NAVDRAWER_ITEM_MY_SCHEDULE:
intent = new Intent(this, MyScheduleActivity.class);
startActivity(intent);
finish();
break;
This differs from the common way of replacing current fragment by a fragment transaction. But the user doesn't spot a visual difference.
No, which is why so many other libraries have their own copy :)
Note that the variables @fname
or @ext
can be simply concatenated. This:
forfiles /S /M *.pdf /C "CMD /C REN @path @fname_old.@ext"
renames all PDF files to "filename_old.pdf"
I had a similar problem, not exactly the same conditions and then i saw this post. Hope it helps someone. Apparently i was using one of my EF entity models a base class for a type that was not specified as a db set in my dbcontext. To fix this issue i had to create a base class that had all the properties common to the two types and inherit from the new base class among the two types.
Example:
//Bad Flow
//class defined in dbcontext as a dbset
public class Customer{
public int Id {get; set;}
public string Name {get; set;}
}
//class not defined in dbcontext as a dbset
public class DuplicateCustomer:Customer{
public object DuplicateId {get; set;}
}
//Good/Correct flow*
//Common base class
public class CustomerBase{
public int Id {get; set;}
public string Name {get; set;}
}
//entity model referenced in dbcontext as a dbset
public class Customer: CustomerBase{
}
//entity model not referenced in dbcontext as a dbset
public class DuplicateCustomer:CustomerBase{
public object DuplicateId {get; set;}
}
<asp:GridView ID="gvEmployee" runat="server"
AutoGenerateColumns="False" ShowHeaderWhenEmpty=”True”>
<Columns>
<asp:BoundField DataField="Id" HeaderText="Id" />
<asp:BoundField DataField="Name" HeaderText="Name" />
<asp:BoundField DataField="Designation" HeaderText="Designation" />
<asp:BoundField DataField="Salary" HeaderText="Salary" />
</Columns>
<EmptyDataTemplate>No Record Available</EmptyDataTemplate>
</asp:GridView>
in CS Page
gvEmployee.DataSource = dt;
gvEmployee.DataBind();
Help.. see that link:
http://www.c-sharpcorner.com/UploadFile/d0e913/how-to-display-the-empty-gridview-in-case-of-no-records-in-d/
For below Spring boot 2 version you need to use below code
server:
context-path: abc
And For Spring boot 2+ version use below code
server:
servlet:
context-path: abc
just offering this up as a possible solution if you don't think the user will have a negative experience on the obvious change. I simply changed the body's class of overflow to hidden when the mouse was over the target div; then I changed the body's div to hidden overflow when the mouse leaves.
Personally I don't think it looks bad, my code could use toggle to make it cleaner, and there are obvious benefits for making this effect possible without the user being aware. So this is probably the hackish-last-resort answer.
//listen mouse on and mouse off for the button
pxMenu.addEventListener("mouseover", toggleA1);
pxOptContainer.addEventListener("mouseout", toggleA2);
//show / hide the pixel option menu
function toggleA1(){
pxOptContainer.style.display = "flex";
body.style.overflow = "hidden";
}
function toggleA2(){
pxOptContainer.style.display = "none";
body.style.overflow = "hidden scroll";
}
In 2010 it is ctrl +k +d for indentation
If the column already exists in your table and it is null, you can update the column with this command (replace id, tablename, and tablekey ):
UPDATE x
SET x.<Id> = x.New_Id
FROM (
SELECT <Id>, ROW_NUMBER() OVER (ORDER BY <tablekey>) AS New_Id
FROM <tablename>
) x
You'll need to get a compiler. The easiest way is probably to install XCode development environment from the CDs/DVDs you got with your Mac, which will give you gcc. Then you should be able compile it like
gcc -o mybinaryfile mysourcefile.c
Here is the approach that worked for me (and I don't see it being used above)
$ find /path/to/the/folder -name *.* -mmin +59 -delete > /dev/null
deleting all the files older than 59 minutes while leaving the folders intact.
A tweet had the answer for me - https://twitter.com/rustyshelf/status/775505191160328194
To stop the Xcode 8 iOS Simulator from logging like crazy, set an environment variable OS_ACTIVITY_MODE = disable in your debug scheme.
It worked.
Connection.Response resp = Jsoup.connect(url) //
.timeout(20000) //
.method(Connection.Method.GET) //
.execute();
actually, the error occurs when you have slow internet so try to maximize the timeout time and then your code will definitely work as it works for me.
These are the Maven dependencies I have.
Java Code:
HttpClient httpclient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);
FileBody uploadFilePart = new FileBody(uploadFile);
MultipartEntity reqEntity = new MultipartEntity();
reqEntity.addPart("upload-file", uploadFilePart);
httpPost.setEntity(reqEntity);
HttpResponse response = httpclient.execute(httpPost);
Maven Dependencies in pom.xml:
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.0.1</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpmime</artifactId>
<version>4.0.1</version>
<scope>compile</scope>
</dependency>
Here is a sample I made a couple of months ago The class encrypt and decrypt data
import java.security.*;
import java.security.spec.*;
import java.io.*;
import javax.crypto.*;
import javax.crypto.spec.*;
public class TestEncryptDecrypt {
private final String ALGO = "DES";
private final String MODE = "ECB";
private final String PADDING = "PKCS5Padding";
private static int mode = 0;
public static void main(String args[]) {
TestEncryptDecrypt me = new TestEncryptDecrypt();
if(args.length == 0) mode = 2;
else mode = Integer.parseInt(args[0]);
switch (mode) {
case 0:
me.encrypt();
break;
case 1:
me.decrypt();
break;
default:
me.encrypt();
me.decrypt();
}
}
public void encrypt() {
try {
System.out.println("Start encryption ...");
/* Get Input Data */
String input = getInputData();
System.out.println("Input data : "+input);
/* Create Secret Key */
KeyGenerator keyGen = KeyGenerator.getInstance(ALGO);
SecureRandom random = SecureRandom.getInstance("SHA1PRNG", "SUN");
keyGen.init(56,random);
Key sharedKey = keyGen.generateKey();
/* Create the Cipher and init it with the secret key */
Cipher c = Cipher.getInstance(ALGO+"/"+MODE+"/"+PADDING);
//System.out.println("\n" + c.getProvider().getInfo());
c.init(Cipher.ENCRYPT_MODE,sharedKey);
byte[] ciphertext = c.doFinal(input.getBytes());
System.out.println("Input Encrypted : "+new String(ciphertext,"UTF8"));
/* Save key to a file */
save(sharedKey.getEncoded(),"shared.key");
/* Save encrypted data to a file */
save(ciphertext,"encrypted.txt");
} catch (Exception e) {
e.printStackTrace();
}
}
public void decrypt() {
try {
System.out.println("Start decryption ...");
/* Get encoded shared key from file*/
byte[] encoded = load("shared.key");
SecretKeyFactory kf = SecretKeyFactory.getInstance(ALGO);
KeySpec ks = new DESKeySpec(encoded);
SecretKey ky = kf.generateSecret(ks);
/* Get encoded data */
byte[] ciphertext = load("encrypted.txt");
System.out.println("Encoded data = " + new String(ciphertext,"UTF8"));
/* Create a Cipher object and initialize it with the secret key */
Cipher c = Cipher.getInstance(ALGO+"/"+MODE+"/"+PADDING);
c.init(Cipher.DECRYPT_MODE,ky);
/* Update and decrypt */
byte[] plainText = c.doFinal(ciphertext);
System.out.println("Plain Text : "+new String(plainText,"UTF8"));
} catch (Exception e) {
e.printStackTrace();
}
}
private String getInputData() {
String id = "owner.id=...";
String name = "owner.name=...";
String contact = "owner.contact=...";
String tel = "owner.tel=...";
final String rc = System.getProperty("line.separator");
StringBuffer buf = new StringBuffer();
buf.append(id);
buf.append(rc);
buf.append(name);
buf.append(rc);
buf.append(contact);
buf.append(rc);
buf.append(tel);
return buf.toString();
}
private void save(byte[] buf, String file) throws IOException {
FileOutputStream fos = new FileOutputStream(file);
fos.write(buf);
fos.close();
}
private byte[] load(String file) throws FileNotFoundException, IOException {
FileInputStream fis = new FileInputStream(file);
byte[] buf = new byte[fis.available()];
fis.read(buf);
fis.close();
return buf;
}
}
Method 1: Did scroll to bottom
Here is the Swift version of Pedro Romão's answer. When the user stops scrolling it checks if it has reached the bottom.
func scrollViewDidEndDragging(scrollView: UIScrollView, willDecelerate decelerate: Bool) {
// UITableView only moves in one direction, y axis
let currentOffset = scrollView.contentOffset.y
let maximumOffset = scrollView.contentSize.height - scrollView.frame.size.height
// Change 10.0 to adjust the distance from bottom
if maximumOffset - currentOffset <= 10.0 {
self.loadMore()
}
}
Method 2: Reached last row
And here is the Swift version of shinyuX's answer. It checks if the user has reached the last row.
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
// set up cell
// ...
// Check if the last row number is the same as the last current data element
if indexPath.row == self.dataArray.count - 1 {
self.loadMore()
}
}
loadMore()
methodI set up these three class variables for fetching batches of data.
// number of items to be fetched each time (i.e., database LIMIT)
let itemsPerBatch = 50
// Where to start fetching items (database OFFSET)
var offset = 0
// a flag for when all database items have already been loaded
var reachedEndOfItems = false
This is the function to load more items from the database into the table view.
func loadMore() {
// don't bother doing another db query if already have everything
guard !self.reachedEndOfItems else {
return
}
// query the db on a background thread
DispatchQueue.global(qos: .background).async {
// determine the range of data items to fetch
var thisBatchOfItems: [MyObjects]?
let start = self.offset
let end = self.offset + self.itemsPerBatch
// query the database
do {
// SQLite.swift wrapper
thisBatchOfItems = try MyDataHelper.findRange(start..<end)
} catch _ {
print("query failed")
}
// update UITableView with new batch of items on main thread after query finishes
DispatchQueue.main.async {
if let newItems = thisBatchOfItems {
// append the new items to the data source for the table view
self.myObjectArray.appendContentsOf(newItems)
// reload the table view
self.tableView.reloadData()
// check if this was the last of the data
if newItems.count < self.itemsPerBatch {
self.reachedEndOfItems = true
print("reached end of data. Batch count: \(newItems.count)")
}
// reset the offset for the next data query
self.offset += self.itemsPerBatch
}
}
}
}
Here is what I came up with and this is with not much lines of code
function show_files($start) {
$contents = scandir($start);
array_splice($contents, 0,2);
echo "<ul>";
foreach ( $contents as $item ) {
if ( is_dir("$start/$item") && (substr($item, 0,1) != '.') ) {
echo "<li>$item</li>";
show_files("$start/$item");
} else {
echo "<li>$item</li>";
}
}
echo "</ul>";
}
show_files('./');
It outputs something like
..idea
.add.php
.add_task.php
.helpers
.countries.php
.mysqli_connect.php
.sort.php
.test.js
.test.php
.view_tasks.php
** The dots are the dots of unoordered list.
Hope this helps.
NSString* path = [[NSBundle mainBundle] pathForResource:@"index" ofType:@"json"];
//????????????,????NSUTF8StringEncoding ????,
NSString* jsonString = [[NSString alloc] initWithContentsOfFile:path encoding:NSUTF8StringEncoding error:nil];
//??????????
NSData* jsonData = [jsonString dataUsingEncoding:NSUTF8StringEncoding];
NSError *jsonError;
id allKeys = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONWritingPrettyPrinted error:&jsonError];
for (int i=0; i<[allKeys count]; i++) {
NSDictionary *arrayResult = [allKeys objectAtIndex:i];
NSLog(@"name=%@",[arrayResult objectForKey:@"storyboardName"]);
}
file:
[
{
"ID":1,
"idSort" : 0,
"deleted":0,
"storyboardName" : "MLMember",
"dispalyTitle" : "76.360779",
"rightLevel" : "10.010490",
"showTabBar" : 1,
"openWeb" : 0,
"webUrl":""
},
{
"ID":1,
"idSort" : 0,
"deleted":0,
"storyboardName" : "0.00",
"dispalyTitle" : "76.360779",
"rightLevel" : "10.010490",
"showTabBar" : 1,
"openWeb" : 0,
"webUrl":""
}
]
You can also try this :
var string = "border-radius:10px 20px 30px 40px";_x000D_
var numbers = string.match(/\d+/g).map(Number);_x000D_
console.log(numbers)
_x000D_
Using Interface builder you can link and get the event for "Editing changed" in any of your function. Now there you can put check for the length
- (IBAction)onValueChange:(id)sender
{
NSString *text = nil;
int MAX_LENGTH = 20;
switch ([sender tag] )
{
case 1:
{
text = myEditField.text;
if (MAX_LENGTH < [text length]) {
myEditField.text = [text substringToIndex:MAX_LENGTH];
}
}
break;
default:
break;
}
}
In my case, I have used a URL object instead Path.
File
File file = new File("my_path");
URL url = file.toURI().toURL();
Resource in classpath using classloader
URL url = MyClass.class.getClassLoader().getResource("resource_name")
When I need to read the content, I can use the following code:
InputStream stream = url.openStream();
And you can access the content using an InputStream.
SELECT IFNULL(SUM(Column1), 0) AS total FROM...
SELECT COALESCE(SUM(Column1), 0) AS total FROM...
The difference between them is that IFNULL
is a MySQL extension that takes two arguments, and COALESCE
is a standard SQL function that can take one or more arguments. When you only have two arguments using IFNULL
is slightly faster, though here the difference is insignificant since it is only called once.
The problem must be with the parameters you are passing(You must be passing blank parameters). For example : http://www.myurl.com?id=5&name= Check if you are handling this at the server you are calling.
You don't need a regex for this one. Use the isNAN()
JavaScript function.
The isNaN() function determines whether a value is an illegal number (Not-a-Number). This function returns true if the value is NaN, and false if not.
if (isNaN($('#Field').val()) == false) {
// It's a number
}
Since an ounce of experience is worth a ton of theory, I tried a little test program for MULTILINE
:
#define MULTILINE(...) #__VA_ARGS__
const char *mstr[] =
{
MULTILINE(1, 2, 3), // "1, 2, 3"
MULTILINE(1,2,3), // "1,2,3"
MULTILINE(1 , 2 , 3), // "1 , 2 , 3"
MULTILINE( 1 , 2 , 3 ), // "1 , 2 , 3"
MULTILINE((1, 2, 3)), // "(1, 2, 3)"
MULTILINE(1
2
3), // "1 2 3"
MULTILINE(1\n2\n3\n), // "1\n2\n3\n"
MULTILINE(1\n
2\n
3\n), // "1\n 2\n 3\n"
MULTILINE(1, "2" \3) // "1, \"2\" \3"
};
Compile this fragment with cpp -P -std=c++11 filename
to reproduce.
The trick behind #__VA_ARGS__
is that __VA_ARGS__
does not process the comma separator. So you can pass it to the stringizing operator. Leading and trailing spaces are trimmed, and spaces (including newlines) between words are compressed to a single space then. Parentheses need to be balanced. I think these shortcomings explain why the designers of C++11, despite #__VA_ARGS__
, saw the need for raw string literals.
@Richie Cotton has a pretty good answer above. I can only add that this page provides some examples. Try the following:
x <- 1:20
y <- runif(20)
plot(x,y,xaxt = "n")
axis(side = 1, at = x, labels = FALSE, tck = -0.01)
if($_FILES['img_name']['name']!=""){
echo "File Present";
}else{
echo "Empty file";
}
Output:
Using BoxDecoration
Container(
margin: EdgeInsets.all(8),
width: 86,
height: 86,
decoration: BoxDecoration(
shape: BoxShape.circle,
image: DecorationImage(
image: NetworkImage('https://i.stack.imgur.com/0VpX0.png'),
fit: BoxFit.cover
),
),
),
If you are using ngResource, the $resolved attribute of an object is useful for loaders:
For a resource as follows:
var User = $resource('/user/:id', {id:'@id'});
var user = User.get({id: 1})
You can link a loader to the $resolved attribute of the resource object:
<div ng-hide="user.$resolved">Loading ...</div>
As mentioned before, you can't use inline elements for styling pseudo classes. Before and after pseudo classes are states of elements, not actual elements. You could only possibly use JavaScript for this.
arr_jq_TabContents[key]
sees the array as an 0-index form.
I provide this post for both IntelliJ and Eclipse.
Eclipse:
For making unit test for your project, please follow these steps (I am using Eclipse in order to write this test):
1- Click on New -> Java Project.
2- Write down your project name and click on finish.
3- Right click on your project. Then, click on New -> Class.
4- Write down your class name and click on finish.
Then, complete the class like this:
public class Math {
int a, b;
Math(int a, int b) {
this.a = a;
this.b = b;
}
public int add() {
return a + b;
}
}
5- Click on File -> New -> JUnit Test Case.
6- Check setUp() and click on finish. SetUp() will be the place that you initialize your test.
7- Click on OK.
8- Here, I simply add 7 and 10. So, I expect the answer to be 17. Complete your test class like this:
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
public class MathTest {
Math math;
@Before
public void setUp() throws Exception {
math = new Math(7, 10);
}
@Test
public void testAdd() {
Assert.assertEquals(17, math.add());
}
}
9- Write click on your test class in package explorer and click on Run as -> JUnit Test.
10- This is the result of the test.
IntelliJ: Note that I used IntelliJ IDEA community 2020.1 for the screenshots. Also, you need to set up your jre before these steps. I am using JDK 11.0.4.
1- Right-click on the main folder of your project-> new -> directory. You should call this 'test'. 2- Right-click on the test folder and create the proper package. I suggest creating the same packaging names as the original class. Then, you right-click on the test directory -> mark directory as -> test sources root. 3- In the right package in the test directory, you need to create a Java class (I suggest to use Test.java). 4- In the created class, type '@Test'. Then, among the options that IntelliJ gives you, select Add 'JUnitx' to classpath. 5- Write your test method in your test class. The method signature is like:
@Test
public void test<name of original method>(){
...
}
You can do your assertions like below:
Assertions.assertTrue(f.flipEquiv(node1_1, node2_1));
These are the imports that I added:
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;
This is the test that I wrote:
You can check your methods like below:
Assertions.assertEquals(<Expected>,<actual>);
Assertions.assertTrue(<actual>);
...
For running your unit tests, right-click on the test and click on Run .
If your test passes, the result will be like below:
I hope it helps. You can see the structure of the project in GitHub https://github.com/m-vahidalizadeh/problem_solving_project.
I think you are on the right track with COALESCE. See here for an example of building a comma-delimited string:
http://www.sqlteam.com/article/using-coalesce-to-build-comma-delimited-string
Because to declare a type, its size needs to be known. You can forward declare a pointer to the type, or typedef a pointer to the type.
If you really want to, you can use the pimpl idiom to keep the includes down. But if you want to use a type, rather than a pointer, the compiler has to know its size.
Edit: j_random_hacker adds an important qualification to this answer, basically that the size needs to be know to use the type, but a forward declaration can be made if we only need to know the type exists, in order to create pointers or references to the type. Since the OP didn't show code, but complained it wouldn't compile, I assumed (probably correctly) that the OP was trying to use the type, not just refer to it.
Look for 'responsive SVG' it is pretty simple to make a SVG responsive and you don't have to worry about sizes any more.
Here is how I did it:
d3.select("div#chartId")_x000D_
.append("div")_x000D_
// Container class to make it responsive._x000D_
.classed("svg-container", true) _x000D_
.append("svg")_x000D_
// Responsive SVG needs these 2 attributes and no width and height attr._x000D_
.attr("preserveAspectRatio", "xMinYMin meet")_x000D_
.attr("viewBox", "0 0 600 400")_x000D_
// Class to make it responsive._x000D_
.classed("svg-content-responsive", true)_x000D_
// Fill with a rectangle for visualization._x000D_
.append("rect")_x000D_
.classed("rect", true)_x000D_
.attr("width", 600)_x000D_
.attr("height", 400);
_x000D_
.svg-container {_x000D_
display: inline-block;_x000D_
position: relative;_x000D_
width: 100%;_x000D_
padding-bottom: 100%; /* aspect ratio */_x000D_
vertical-align: top;_x000D_
overflow: hidden;_x000D_
}_x000D_
.svg-content-responsive {_x000D_
display: inline-block;_x000D_
position: absolute;_x000D_
top: 10px;_x000D_
left: 0;_x000D_
}_x000D_
_x000D_
svg .rect {_x000D_
fill: gold;_x000D_
stroke: steelblue;_x000D_
stroke-width: 5px;_x000D_
}
_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/5.7.0/d3.min.js"></script>_x000D_
_x000D_
<div id="chartId"></div>
_x000D_
Note: Everything in the SVG image will scale with the window width. This includes stroke width and font sizes (even those set with CSS). If this is not desired, there are more involved alternate solutions below.
More info / tutorials:
http://thenewcode.com/744/Make-SVG-Responsive
http://soqr.fr/testsvg/embed-svg-liquid-layout-responsive-web-design.php
Have you tried GoogleMap.getMyLocation()
?
For a long value you need to add the length info 'l' and 'u' for unsigned decimal integer,
as a reference of available options see sprintf
#include <stdio.h>
int main ()
{
unsigned long lval = 123;
char buffer [50];
sprintf (buffer, "%lu" , lval );
}
config/database.php
strict
key inside mysql
connection settingsfalse
In my case i had to execute a command to drop all connections including my active administrator connection
SELECT pg_terminate_backend(pg_stat_activity.pid)
FROM pg_stat_activity
WHERE datname = current_database()
which terminated all connections and show me a fatal ''error'' message :
FATAL: terminating connection due to administrator command SQL state: 57P01
After that it was possible to drop the database
For mass assignment of values to an ActiveRecord model without saving, use either the assign_attributes
or attributes=
methods. These methods are available in Rails 3 and newer. However, there are minor differences and version-related gotchas to be aware of.
Both methods follow this usage:
@user.assign_attributes{ model: "Sierra", year: "2012", looks: "Sexy" }
@user.attributes = { model: "Sierra", year: "2012", looks: "Sexy" }
Note that neither method will perform validations or execute callbacks; callbacks and validation will happen when save
is called.
attributes=
differs slightly from assign_attributes
in Rails 3. attributes=
will check that the argument passed to it is a Hash, and returns immediately if it is not; assign_attributes
has no such Hash check. See the ActiveRecord Attribute Assignment API documentation for attributes=
.
The following invalid code will silently fail by simply returning without setting the attributes:
@user.attributes = [ { model: "Sierra" }, { year: "2012" }, { looks: "Sexy" } ]
attributes=
will silently behave as though the assignments were made successfully, when really, they were not.
This invalid code will raise an exception when assign_attributes
tries to stringify the hash keys of the enclosing array:
@user.assign_attributes([ { model: "Sierra" }, { year: "2012" }, { looks: "Sexy" } ])
assign_attributes
will raise a NoMethodError
exception for stringify_keys
, indicating that the first argument is not a Hash. The exception itself is not very informative about the actual cause, but the fact that an exception does occur is very important.
The only difference between these cases is the method used for mass assignment: attributes=
silently succeeds, and assign_attributes
raises an exception to inform that an error has occurred.
These examples may seem contrived, and they are to a degree, but this type of error can easily occur when converting data from an API, or even just using a series of data transformation and forgetting to Hash[]
the results of the final .map
. Maintain some code 50 lines above and 3 functions removed from your attribute assignment, and you've got a recipe for failure.
The lesson with Rails 3 is this: always use assign_attributes
instead of attributes=
.
In Rails 4, attributes=
is simply an alias to assign_attributes
. See the ActiveRecord Attribute Assignment API documentation for attributes=
.
With Rails 4, either method may be used interchangeably. Failure to pass a Hash as the first argument will result in a very helpful exception: ArgumentError: When assigning attributes, you must pass a hash as an argument.
If you're pre-flighting assignments in preparation to a save
, you might be interested in validating before save, as well. You can use the valid?
and invalid?
methods for this. Both return boolean values. valid?
returns true if the unsaved model passes all validations or false if it does not. invalid?
is simply the inverse of valid?
valid?
can be used like this:
@user.assign_attributes{ model: "Sierra", year: "2012", looks: "Sexy" }.valid?
This will give you the ability to handle any validations issues in advance of calling save
.
TheDay maps back to some integer type. So:
printf("%s", TheDay);
Attempts to parse TheDay as a string, and will either print out garbage or crash.
printf is not typesafe and trusts you to pass the right value to it. To print out the name of the value, you'd need to create some method for mapping the enum value to a string - either a lookup table, giant switch statement, etc.
According to the standard condition_variables
are allowed to wakeup spuriously, even if the event hasn't occured. In case of a spurious wakeup it will return cv_status::no_timeout
(since it woke up instead of timing out), even though it hasn't been notified. The correct solution for this is of course to check if the wakeup was actually legit before proceding.
The details are specified in the standard §30.5.1 [thread.condition.condvar]:
—The function will unblock when signaled by a call to notify_one(), a call to notify_all(), expiration of the absolute timeout (30.2.4) speci?ed by abs_time, or spuriously.
...
Returns: cv_status::timeout if the absolute timeout (30.2.4) speci?edby abs_time expired, other-ise cv_status::no_timeout.
keytool -exportcert -alias androiddebugkey -keystore "C:\Users**Deepak**.android\debug.keystore" | "C:\Users\Deepak\ssl\bin\openssl" sha1 -binary | "C:\Users\Deepak\ssl\bin\openssl" base64
2 Changes in this above command 1.Deepak===Replace by your System USERNAME 2.C:\Users\Deepak\ssl=== replce your Open SSL path
run this command and get output like this
C:\Users\Deepak>keytool -exportcert -alias androiddebugkey -keystore "C:\Users\D eepak.android\debug.keystore" | "C:\Users\Deepak\ssl\bin\openssl" sha1 -binary | "C:\Users\Deepak\ssl\bin\openssl" base64 Enter keystore password: ****** ga0RGNY******************=
Setting the canvas coordinate space width and height based on the browser client's dimensions requires you to resize and redraw whenever the browser is resized.
A less convoluted solution is to maintain the drawable dimensions in Javascript variables, but set the canvas dimensions based on the screen.width, screen.height dimensions. Use CSS to fit:
#containingDiv {
overflow: hidden;
}
#myCanvas {
position: absolute;
top: 0px;
left: 0px;
}
The browser window generally won't ever be larger than the screen itself (except where the screen resolution is misreported, as it could be with non-matching dual monitors), so the background won't show and pixel proportions won't vary. The canvas pixels will be directly proportional to the screen resolution unless you use CSS to scale the canvas.
I've solved this error downloading the executable file for python 3.7. I've had downloaded the embeddeable version and got that error. Now it works! :D
In spark 2.2 there are two ways to add constant value in a column in DataFrame:
1) Using lit
2) Using typedLit
.
The difference between the two is that typedLit
can also handle parameterized scala types e.g. List, Seq, and Map
Sample DataFrame:
val df = spark.createDataFrame(Seq((0,"a"),(1,"b"),(2,"c"))).toDF("id", "col1")
+---+----+
| id|col1|
+---+----+
| 0| a|
| 1| b|
+---+----+
1) Using lit
: Adding constant string value in new column named newcol:
import org.apache.spark.sql.functions.lit
val newdf = df.withColumn("newcol",lit("myval"))
Result:
+---+----+------+
| id|col1|newcol|
+---+----+------+
| 0| a| myval|
| 1| b| myval|
+---+----+------+
2) Using typedLit
:
import org.apache.spark.sql.functions.typedLit
df.withColumn("newcol", typedLit(("sample", 10, .044)))
Result:
+---+----+-----------------+
| id|col1| newcol|
+---+----+-----------------+
| 0| a|[sample,10,0.044]|
| 1| b|[sample,10,0.044]|
| 2| c|[sample,10,0.044]|
+---+----+-----------------+
No that is wrong. Arrays are special objects in Java. So it is like passing other objects where you pass the value of the reference, but not the reference itself. Meaning, changing the reference of an array in the called routine will not be reflected in the calling routine.
$('input[type="submit"]').click(function(){
$(this).css('color','red');
});
Use class, Demo:- http://jsfiddle.net/BX6Df/
$('input[type="submit"]').click(function(){
$(this).addClass('red');
});
if you want to toggle the color each click, you can try this:- http://jsfiddle.net/SMNks/
$('input[type="submit"]').click(function(){
$(this).toggleClass('red');
});
.red
{
background-color:red;
}
Updated answer for your comment.
$('input[type="submit"]').click(function(){
$('input[type="submit"].red').removeClass('red')
$(this).addClass('red');
});
On the side bar of the PHP 7 alpha download page, it does say this:
VC9, VC11 & VC14 More recent versions of PHP are built with VC9, VC11 or VC14 (Visual Studio 2008, 2012 or 2015 compiler respectively) and include improvements in performance and stability.
The VC9 builds require you to have the Visual C++ Redistributable for Visual Studio 2008 SP1 x86 or x64 installed
The VC11 builds require to have the Visual C++ Redistributable for Visual Studio 2012 x86 or x64 installed
The VC14 builds require to have the Visual C++ Redistributable for Visual Studio 2015 x86 or x64 installed
There's been a problem with some of those links, so the files are also available from Softpedia.
In the case of the PHP 7 alpha, it's the last option that's required.
I think that the placement of this information is poor, as it's kind of marginalized (i.e.: it's basically literally in the margin!) whereas it's actually critical for the software to run.
I documented my experiences of getting PHP 7 alpha up and running on Windows 8.1 in PHP: getting PHP7 alpha running on Windows 8.1, and it covers some more symptoms that might crop up. They're out of scope for this question but might help other people.
Other symptom of this issue:
php7apache2_4.dll
is missing despite it definitely being in place, and offering nothing else in any log.php-cgi.exe - The FastCGI process exited unexpectedly
(as per @ftexperts's comment below)Attempted solution:
php7apache2_4.dll
file from an earlier PHP 7 dev build. This did not work.(I include those for googleability.)
You can also use scopes like this below and put them in a concern and include in models you may need them:
scope :ci_find, lambda { |column, value| where("lower(#{column}) = ?", value.downcase).first }
Then use like this:
Model.ci_find('column', 'value')
The one reason I have which made switching to MacVim worth it: Yank uses the system clipboard.
I can finally copy paste between MacVim on my terminal and the rest of my applications.
The if statements in your example are unnecessary. Just do it like this:
dosomething1 || exit 1
If you take Ville Laurikari's advice and use set -e
then for some commands you may need to use this:
dosomething || true
The || true
will make the command pipeline have a true
return value even if the command fails so the the -e
option will not kill the script.
we can create nested cte.please see the below cte in example
;with cte_data as
(
Select * from [HumanResources].[Department]
),cte_data1 as
(
Select * from [HumanResources].[Department]
)
select * from cte_data,cte_data1
The token has to be placed in an Authorization header according to the following format:
Authorization: Bearer [Token_Value]
import urllib2
import json
def get_auth_token():
"""
get an auth token
"""
req=urllib2.Request("https://xforce-api.mybluemix.net/auth/anonymousToken")
response=urllib2.urlopen(req)
html=response.read()
json_obj=json.loads(html)
token_string=json_obj["token"].encode("ascii","ignore")
return token_string
def get_response_json_object(url, auth_token):
"""
returns json object with info
"""
auth_token=get_auth_token()
req=urllib2.Request(url, None, {"Authorization": "Bearer %s" %auth_token})
response=urllib2.urlopen(req)
html=response.read()
json_obj=json.loads(html)
return json_obj
Most answers here are pretty old.
In the past when un managed nand was the most popular storage technology, yaffs2 was the most common file system. This days there are few devices using un-managed nand, and those still in use are slowly migrating to ubifs.
Today most common storage is emmc (managed nand), for such devices ext4 is far more popular, but, this file system is slowly clears its way for f2fs (flash friendly fs).
Edit: f2fs will probably won't make it as the common fs for flash devices (including android)
If they really absolutely have to remain unsorted (which they really don't.. and if you're dealing with hundreds of thousands of elements then I have to ask why you would be comparing vectors like this), you can hack together a compare method which works with unsorted arrays.
The only way I though of to do that was to create a temporary vector3
and pretend to do a set_intersection
by adding all elements of vector1
to it, then doing a search for each individual element of vector2
in vector3
and removing it if found. I know that sounds terrible, but that's why I'm not writing any C++ standard libraries anytime soon.
Really, though, just sort them first.
If you want your JTextField
to be focused when your GUI shows up, you can use this:
in = new JTextField(40);
f.addWindowListener( new WindowAdapter() {
public void windowOpened( WindowEvent e ){
in.requestFocus();
}
});
Where f
would be your JFrame
and in
is your JTextField
.
I just thought I should share how I actually solved the problem and why I think this is the right solution (provided you don't optimize for old browser).
data: ...
)var blob = new Blob(
// I'm using page innerHTML as data
// note that you can use the array
// to concatenate many long strings EFFICIENTLY
[document.body.innerHTML],
// Mime type is important for data url
{type : 'text/html'}
);
// This FileReader works asynchronously, so it doesn't lag
// the web application
var a = new FileReader();
a.onload = function(e) {
// Capture result here
console.log(e.target.result);
};
a.readAsDataURL(blob);
Apart from obvious solution - opening new window with your dataURL as URL you can do two other things.
File saver can create actual fileSave dialog with predefined filename. It can also fallback to normal dataURL approach.
URL.createObjectURL
This is great for reusing base64 encoded data. It creates a short URL for your dataURL:
console.log(URL.createObjectURL(blob));
//Prints: blob:http://stackoverflow.com/7c18953f-f5f8-41d2-abf5-e9cbced9bc42
Don't forget to use the URL including the leading blob
prefix. I used document.body
again:
You can use this short URL as AJAX target, <script>
source or <a>
href location. You're responsible for destroying the URL though:
URL.revokeObjectURL('blob:http://stackoverflow.com/7c18953f-f5f8-41d2-abf5-e9cbced9bc42')
I like more the "pythonic way"
List<string> lines = new List<string> {
"line1",
"line2",
String.Format("{0} - {1} | {2}",
someVar,
othervar,
thirdVar
)
};
if(foo)
lines.Add("line3");
return String.Join(Environment.NewLine, lines);
One thing you might want to consider besides the other issues mentioned is that isEmpty()
was introduced in 1.6, so if you use it you won't be able to run the code on Java 1.5 or below.
In PHP arrays are passed to functions by value by default, unless you explicitly pass them by reference, as the following snippet shows:
$foo = array(11, 22, 33);
function hello($fooarg) {
$fooarg[0] = 99;
}
function world(&$fooarg) {
$fooarg[0] = 66;
}
hello($foo);
var_dump($foo); // (original array not modified) array passed-by-value
world($foo);
var_dump($foo); // (original array modified) array passed-by-reference
Here is the output:
array(3) {
[0]=>
int(11)
[1]=>
int(22)
[2]=>
int(33)
}
array(3) {
[0]=>
int(66)
[1]=>
int(22)
[2]=>
int(33)
}
I had to do a combination of other people's answers on this thread.
<Reference Include="netstandard" />
for IE9 I found that a meta tag was required to set the mode
<meta http-equiv="X-UA-Compatible" content="IE=Edge"/>
<video width="400" height="300" preload controls>
<source src="movie.mp4" type="video/mp4" />
Your browser does not support the video tag
</video>
Martin Encountered the same issue with a Minecraft Mod project when I changed the Main folder location. Normally I would open the project like this
This is how my path looked when I started the project
I got the same "The project description file (.project) for my project is missing." Error.
I later found the .project file in the main folder like this.
This is the location where I found the .project file
I found that going eclipse to "File->Open Project from File System or Archive" and navigate to your main project folder with the .project file solved the problem.
My project is already included
This is my first post in here hoping it can help you out, Martin.
You can always do fdisk -l
which seems to work pretty well, even on strange setups such as EC2 xvda devices.
Here is a dump for a m1.large instance:
root@ip-10-126-247-82:~# fdisk -l
Disk /dev/xvda1: 10.7 GB, 10737418240 bytes
255 heads, 63 sectors/track, 1305 cylinders, total 20971520 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Disk /dev/xvda1 doesn't contain a valid partition table
Disk /dev/xvda2: 365.0 GB, 365041287168 bytes
255 heads, 63 sectors/track, 44380 cylinders, total 712971264 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Disk /dev/xvda2 doesn't contain a valid partition table
Disk /dev/xvda3: 939 MB, 939524096 bytes
255 heads, 63 sectors/track, 114 cylinders, total 1835008 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Disk /dev/xvda3 doesn't contain a valid partition table
While mount
says:
root@ip-10-126-247-82:~# mount
/dev/xvda1 on / type ext4 (rw)
proc on /proc type proc (rw,noexec,nosuid,nodev)
sysfs on /sys type sysfs (rw,noexec,nosuid,nodev)
fusectl on /sys/fs/fuse/connections type fusectl (rw)
none on /sys/kernel/debug type debugfs (rw)
none on /sys/kernel/security type securityfs (rw)
udev on /dev type devtmpfs (rw,mode=0755)
devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)
tmpfs on /run type tmpfs (rw,noexec,nosuid,size=10%,mode=0755)
none on /run/lock type tmpfs (rw,noexec,nosuid,nodev,size=5242880)
none on /run/shm type tmpfs (rw,nosuid,nodev)
/dev/xvda2 on /mnt type ext3 (rw)
And /proc/partitions
says:
root@ip-10-126-247-82:~# cat /proc/partitions
major minor #blocks name
202 1 10485760 xvda1
202 2 356485632 xvda2
202 3 917504 xvda3
How fdisk -l
works is something I would love to know myself.
Count all the DISTINCT program names by program type and push number
SELECT COUNT(DISTINCT program_name) AS Count,
program_type AS [Type]
FROM cm_production
WHERE push_number=@push_number
GROUP BY program_type
DISTINCT COUNT(*)
will return a row for each unique count. What you want is COUNT(DISTINCT <expression>)
: evaluates expression for each row in a group and returns the number of unique, non-null values.