Replace slf4j-jdk14-xxx.jar with slf4j-log4j12-xxx.jar. If you have both, delete slf4j-jdk14-xxx.jar. Found this solution at https://forum.hibernate.org/viewtopic.php?f=1&t=999623
If your computer can't find the IP address associated with SUBDOMAIN1.example.COM
, it will not find the site.
You need to either change your hosts
file (so you can at least test things - this will be a local change, only available to yourself), or update DNS so the name will resolve correctly (so the rest of the world can see it).
I found this question, but I think a clear and simple answer is missing.
I don't want to attach my debugger to a process, but I still want to be able to call the service OnStart
and OnStop
methods. I also want it to run as a console application so that I can log information from NLog to a console.
I found these brilliant guides that does this:
Start by changing the projects Output type
to Console Application
.
Change your Program.cs
to look like this:
static class Program
{
/// <summary>
/// The main entry point for the application.
/// </summary>
static void Main()
{
// Startup as service.
ServiceBase[] ServicesToRun;
ServicesToRun = new ServiceBase[]
{
new Service1()
};
if (Environment.UserInteractive)
{
RunInteractive(ServicesToRun);
}
else
{
ServiceBase.Run(ServicesToRun);
}
}
}
Then add the following method to allow services running in interactive mode.
static void RunInteractive(ServiceBase[] servicesToRun)
{
Console.WriteLine("Services running in interactive mode.");
Console.WriteLine();
MethodInfo onStartMethod = typeof(ServiceBase).GetMethod("OnStart",
BindingFlags.Instance | BindingFlags.NonPublic);
foreach (ServiceBase service in servicesToRun)
{
Console.Write("Starting {0}...", service.ServiceName);
onStartMethod.Invoke(service, new object[] { new string[] { } });
Console.Write("Started");
}
Console.WriteLine();
Console.WriteLine();
Console.WriteLine(
"Press any key to stop the services and end the process...");
Console.ReadKey();
Console.WriteLine();
MethodInfo onStopMethod = typeof(ServiceBase).GetMethod("OnStop",
BindingFlags.Instance | BindingFlags.NonPublic);
foreach (ServiceBase service in servicesToRun)
{
Console.Write("Stopping {0}...", service.ServiceName);
onStopMethod.Invoke(service, null);
Console.WriteLine("Stopped");
}
Console.WriteLine("All services stopped.");
// Keep the console alive for a second to allow the user to see the message.
Thread.Sleep(1000);
}
The quick and dirty method is as follows:
cat ip_addresses | sort -n | uniq -c
If you need to use the values in bash you can assign the whole command to a bash variable and then loop through the results.
PS
If the sort command is omitted, you will not get the correct results as uniq only looks at successive identical lines.
Based on loveborg's excellent python snippet, I wrote this:
#!/bin/sh
# Version of readlink that follows links to the end; good for Mac OS X
for file in "$@"; do
while [ -h "$file" ]; do
l=`readlink $file`
case "$l" in
/*) file="$l";;
*) file=`dirname "$file"`/"$l"
esac
done
#echo $file
python -c "import os,sys; print os.path.abspath(sys.argv[1])" "$file"
done
While the accepted answer is very true, just want to point out that AllowTransparency has some downfalls. It does not allow child window controls to show up, ie WebBrowser, and it usually forces software rendering which can have negative performance effects.
There is a better work around though.
When you want to create a window with no border that is resizeable and is able to host a WebBrowser control or a Frame control pointed to a URL you simply couldn't, the contents of said control would show empty.
I found a workaround though; in the Window, if you set the WindowStyle to None, ResizeMode to NoResize (bear with me, you will still be able to resize once done) then make sure you have UNCHECKED AllowsTransparency you will have a static sized window with no border and will show the browser control.
Now, you probably still want to be able to resize right? Well we can to that with a interop call:
[DllImport("user32.dll", CharSet = CharSet.Auto)]
private static extern IntPtr SendMessage(IntPtr hWnd, uint Msg, IntPtr wParam, IntPtr lParam);
[DllImportAttribute("user32.dll")]
public static extern bool ReleaseCapture();
//Attach this to the MouseDown event of your drag control to move the window in place of the title bar
private void WindowDrag(object sender, MouseButtonEventArgs e) // MouseDown
{
ReleaseCapture();
SendMessage(new WindowInteropHelper(this).Handle,
0xA1, (IntPtr)0x2, (IntPtr)0);
}
//Attach this to the PreviewMousLeftButtonDown event of the grip control in the lower right corner of the form to resize the window
private void WindowResize(object sender, MouseButtonEventArgs e) //PreviewMousLeftButtonDown
{
HwndSource hwndSource = PresentationSource.FromVisual((Visual)sender) as HwndSource;
SendMessage(hwndSource.Handle, 0x112, (IntPtr)61448, IntPtr.Zero);
}
And voila, A WPF window with no border and still movable and resizable without losing compatibility with with controls like WebBrowser
function StopWatch() {
let startTime, endTime, running, duration = 0
this.start = () => {
if (running) console.log('its already running')
else {
running = true
startTime = Date.now()
}
}
this.stop = () => {
if (!running) console.log('its not running!')
else {
running = false
endTime = Date.now()
const seconds = (endTime - startTime) / 1000
duration += seconds
}
}
this.restart = () => {
startTime = endTime = null
running = false
duration = 0
}
Object.defineProperty(this, 'duration', {
get: () => duration.toFixed(2)
})
}
const sw = new StopWatch()
sw.start()
sw.stop()
sw.duration
Yes. It is done with a filter on the appender.
Here is the appender configuration I normally use, limited to only INFO level.
<appender name="RollingFileAppender" type="log4net.Appender.RollingFileAppender">
<file value="${HOMEDRIVE}\\PI.Logging\\PI.ECSignage.${COMPUTERNAME}.log" />
<appendToFile value="true" />
<maxSizeRollBackups value="30" />
<maximumFileSize value="5MB" />
<rollingStyle value="Size" /> <!--A maximum number of backup files when rolling on date/time boundaries is not supported. -->
<staticLogFileName value="false" />
<lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
<layout type="log4net.Layout.PatternLayout">
<param name="ConversionPattern" value="%date{yyyy-MM-dd HH:mm:ss.ffff} [%2thread] %-5level %20.20type{1}.%-25method at %-4line| (%-30.30logger) %message%newline" />
</layout>
<filter type="log4net.Filter.LevelRangeFilter">
<levelMin value="INFO" />
<levelMax value="INFO" />
</filter>
</appender>
This solution provides a strict FixedLengthArray (ak.a. SealedArray) type signature based in Tuples.
Syntax example :
// Array containing 3 strings
let foo : FixedLengthArray<[string, string, string]>
This is the safest approach, considering it prevents accessing indexes out of the boundaries.
Implementation :
type ArrayLengthMutationKeys = 'splice' | 'push' | 'pop' | 'shift' | 'unshift' | number
type ArrayItems<T extends Array<any>> = T extends Array<infer TItems> ? TItems : never
type FixedLengthArray<T extends any[]> =
Pick<T, Exclude<keyof T, ArrayLengthMutationKeys>>
& { [Symbol.iterator]: () => IterableIterator< ArrayItems<T> > }
Tests :
var myFixedLengthArray: FixedLengthArray< [string, string, string]>
// Array declaration tests
myFixedLengthArray = [ 'a', 'b', 'c' ] // ? OK
myFixedLengthArray = [ 'a', 'b', 123 ] // ? TYPE ERROR
myFixedLengthArray = [ 'a' ] // ? LENGTH ERROR
myFixedLengthArray = [ 'a', 'b' ] // ? LENGTH ERROR
// Index assignment tests
myFixedLengthArray[1] = 'foo' // ? OK
myFixedLengthArray[1000] = 'foo' // ? INVALID INDEX ERROR
// Methods that mutate array length
myFixedLengthArray.push('foo') // ? MISSING METHOD ERROR
myFixedLengthArray.pop() // ? MISSING METHOD ERROR
// Direct length manipulation
myFixedLengthArray.length = 123 // ? READ-ONLY ERROR
// Destructuring
var [ a ] = myFixedLengthArray // ? OK
var [ a, b ] = myFixedLengthArray // ? OK
var [ a, b, c ] = myFixedLengthArray // ? OK
var [ a, b, c, d ] = myFixedLengthArray // ? INVALID INDEX ERROR
(*) This solution requires the noImplicitAny
typescript configuration directive to be enabled in order to work (commonly recommended practice)
This solution behaves as an augmentation of the Array
type, accepting an additional second parameter(Array length). Is not as strict and safe as the Tuple based solution.
Syntax example :
let foo: FixedLengthArray<string, 3>
Keep in mind that this approach will not prevent you from accessing an index out of the declared boundaries and set a value on it.
Implementation :
type ArrayLengthMutationKeys = 'splice' | 'push' | 'pop' | 'shift' | 'unshift'
type FixedLengthArray<T, L extends number, TObj = [T, ...Array<T>]> =
Pick<TObj, Exclude<keyof TObj, ArrayLengthMutationKeys>>
& {
readonly length: L
[ I : number ] : T
[Symbol.iterator]: () => IterableIterator<T>
}
Tests :
var myFixedLengthArray: FixedLengthArray<string,3>
// Array declaration tests
myFixedLengthArray = [ 'a', 'b', 'c' ] // ? OK
myFixedLengthArray = [ 'a', 'b', 123 ] // ? TYPE ERROR
myFixedLengthArray = [ 'a' ] // ? LENGTH ERROR
myFixedLengthArray = [ 'a', 'b' ] // ? LENGTH ERROR
// Index assignment tests
myFixedLengthArray[1] = 'foo' // ? OK
myFixedLengthArray[1000] = 'foo' // ? SHOULD FAIL
// Methods that mutate array length
myFixedLengthArray.push('foo') // ? MISSING METHOD ERROR
myFixedLengthArray.pop() // ? MISSING METHOD ERROR
// Direct length manipulation
myFixedLengthArray.length = 123 // ? READ-ONLY ERROR
// Destructuring
var [ a ] = myFixedLengthArray // ? OK
var [ a, b ] = myFixedLengthArray // ? OK
var [ a, b, c ] = myFixedLengthArray // ? OK
var [ a, b, c, d ] = myFixedLengthArray // ? SHOULD FAIL
With moment you can parse the date string you have:
var dt = moment(myDate.date, "YYYY-MM-DD HH:mm:ss")
That's for UTC, you'll have to convert the time zone from that point if you so desire.
Then you can get the day of the week:
dt.format('dddd');
This problem comes from a strange quirk within Office/Windows.
After developing the same piece of VBA code and running it hundreds of times (literally) over the last couple days I ran into this problem just now. The only thing that has been different is that just prior to experiencing this perplexing problem I accidentally ended the execution of the VBA code with an unorthodox method.
I cleaned out all temp files, rebooted, etc... When I ran the code again after all of this I still got the issue - before I entered the first loop. It makes sense that "press "Debug" button in the popup, then press twice [Ctrl+Break] and after this can continue without stops" because something in the combination of Office/Windows has not released the execution. It is stuck.
The redundant Ctrl+Break action probably resolves the lingering execution.
I've managed to find a CSS workaround to preventing bouncing of the viewport. The key was to wrap the content in 3 divs with -webkit-touch-overflow:scroll applied to them. The final div should have a min-height of 101%. In addition, you should explicitly set fixed widths/heights on the body tag representing the size of your device. I've added a red background on the body to demonstrate that it is the content that is now bouncing and not the mobile safari viewport.
Source code below and here is a plunker (this has been tested on iOS7 GM too). http://embed.plnkr.co/NCOFoY/preview
If you intend to run this as a full-screen app on iPhone 5, modify the height to 1136px (when apple-mobile-web-app-status-bar-style is set to 'black-translucent' or 1096px when set to 'black'). 920x is the height of the viewport once the chrome of mobile safari has been taken into account).
<!doctype html>
<html>
<head>
<meta name="viewport" content="initial-scale=0.5,maximum-scale=0.5,minimum-scale=0.5,user-scalable=no" />
<style>
body { width: 640px; height: 920px; overflow: hidden; margin: 0; padding: 0; background: red; }
.no-bounce { width: 100%; height: 100%; overflow-y: scroll; -webkit-overflow-scrolling: touch; }
.no-bounce > div { width: 100%; height: 100%; overflow-y: scroll; -webkit-overflow-scrolling: touch; }
.no-bounce > div > div { width: 100%; min-height: 101%; font-size: 30px; }
p { display: block; height: 50px; }
</style>
</head>
<body>
<div class="no-bounce">
<div>
<div>
<h1>Some title</h1>
<p>item 1</p>
<p>item 2</p>
<p>item 3</p>
<p>item 4</p>
<p>item 5</p>
<p>item 6</p>
<p>item 7</p>
<p>item 8</p>
<p>item 9</p>
<p>item 10</p>
<p>item 11</p>
<p>item 12</p>
<p>item 13</p>
<p>item 14</p>
<p>item 15</p>
<p>item 16</p>
<p>item 17</p>
<p>item 18</p>
<p>item 19</p>
<p>item 20</p>
</div>
</div>
</div>
</body>
</html>
My opinion after making changes on your .env files restart your server and serve the app again. Just to be sure of the actual error. The php artisan clear and cache afterwards works pretty fine.
instance.__class__.__name__
example:
>>> class A():
pass
>>> a = A()
>>> a.__class__.__name__
'A'
Arrays have O(1) random access, but are really expensive to add stuff onto or remove stuff from.
Linked lists are really cheap to add or remove items anywhere and to iterate, but random access is O(n).
/
starts from the root only, to get the relative path we should use ./
or ../
I guess you want to do the "Iterating over Keys and Values"
As the doc here says, just add "|keys" in the variable you want and it will magically happen.
{% for key, user in users %}
<li>{{ key }}: {{ user.username|e }}</li>
{% endfor %}
It never hurts to search before asking :)
LEFT is not a function in Oracle. This probably came from someone familiar with SQL Server:
Returns the left part of a character string with the specified number of characters.
-- Syntax for SQL Server, Azure SQL Database, Azure SQL Data Warehouse, Parallel Data Warehouse
LEFT ( character_expression , integer_expression )
I had a similar problem just now. However, this had nothing to do with modifying the php.ini
file. It was from a for loop. If you are having nested for
loops, make sure you are using the iterator properly. In my case, I was iterating the outer iterator from my inner iterator.
This can happen due to too many connection same time or many chat at same time. Also it can happen due too many session.
The best way to sort out this issue is restart MySQL.
service mysqld restart
or
service mysql restart
or
/etc/init.d/mysqld restart
This is old topic but on my last test on one my API, cURL is faster and more stable. Sometimes file_get_contents on larger request need over 5 seconds when cURL need only from 1.4 to 1.9 seconds what is double faster.
I need to add one note on this that I just send GET and recive JSON content. If you setup cURL properly, you will have a great response. Just "tell" to cURL what you need to send and what you need to recive and that's it.
On your exampe I would like to do this setup:
$ch = curl_init('http://api.bitly.com/v3/shorten?login=user&apiKey=key&longUrl=url');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 5);
curl_setopt($ch, CURLOPT_TIMEOUT, 3);
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Accept: application/json'));
$result = curl_exec($ch);
This request will return data in 0.10 second max
When executing a script in a remote server. Mongo will add its own logging output, which we might want to omit from our file.
--quiet
option will only disable connection related logs. Not all mongo logs. In such case we might need to filter out unneeded lines manually. A Windows based example:
mongo dbname --username userName --password password --host replicaset/ip:port --quiet printDataToCsv.js | findstr /v "NETWORK" > data.csv
This will pipe the script output and use findstr
to filter out any lines, which have NETWORK string in them. More information on findstr: https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/findstr
A Linux version of this would use grep
.
For me, I missed this statement in @Component decorator: animations: [yourAnimation]
Once I added this statement, errors gone. (Angular 6.x)
In the case of winforms:
If you include the images to your resources you can do it like this, very simple and straight forward:
public Form1()
{
InitializeComponent();
button1.MouseEnter += new EventHandler(button1_MouseEnter);
button1.MouseLeave += new EventHandler(button1_MouseLeave);
}
void button1_MouseLeave(object sender, EventArgs e)
{
this.button1.BackgroundImage = ((System.Drawing.Image)(Properties.Resources.img1));
}
void button1_MouseEnter(object sender, EventArgs e)
{
this.button1.BackgroundImage = ((System.Drawing.Image)(Properties.Resources.img2));
}
I would not recommend hardcoding image paths.
As you have altered your question ...
There is no (on)MouseOver in winforms afaik, there are MouseHover and MouseMove events, but if you change image on those, it will not change back, so the MouseEnter + MouseLeave are what you are looking for I think. Anyway, changing the image on Hover or Move :
in the constructor:
button1.MouseHover += new EventHandler(button1_MouseHover);
button1.MouseMove += new MouseEventHandler(button1_MouseMove);
void button1_MouseMove(object sender, MouseEventArgs e)
{
this.button1.BackgroundImage = ((System.Drawing.Image)(Properties.Resources.img2));
}
void button1_MouseHover(object sender, EventArgs e)
{
this.button1.BackgroundImage = ((System.Drawing.Image)(Properties.Resources.img2));
}
To add images to your resources: Projectproperties/resources/add/existing file
I'm guessing from your last question, asked 20 minutes before this one, that you are trying to parse (read and convert) the XML found through using GeoNames' FindNearestAddress.
If your XML is in a string variable called txt
and looks like this:
<address>
<street>Roble Ave</street>
<mtfcc>S1400</mtfcc>
<streetNumber>649</streetNumber>
<lat>37.45127</lat>
<lng>-122.18032</lng>
<distance>0.04</distance>
<postalcode>94025</postalcode>
<placename>Menlo Park</placename>
<adminCode2>081</adminCode2>
<adminName2>San Mateo</adminName2>
<adminCode1>CA</adminCode1>
<adminName1>California</adminName1>
<countryCode>US</countryCode>
</address>
Then you can parse the XML with Javascript DOM like this:
if (window.DOMParser)
{
parser = new DOMParser();
xmlDoc = parser.parseFromString(txt, "text/xml");
}
else // Internet Explorer
{
xmlDoc = new ActiveXObject("Microsoft.XMLDOM");
xmlDoc.async = false;
xmlDoc.loadXML(txt);
}
And get specific values from the nodes like this:
//Gets house address number
xmlDoc.getElementsByTagName("streetNumber")[0].childNodes[0].nodeValue;
//Gets Street name
xmlDoc.getElementsByTagName("street")[0].childNodes[0].nodeValue;
//Gets Postal Code
xmlDoc.getElementsByTagName("postalcode")[0].childNodes[0].nodeValue;
In response to @gaugeinvariante's concerns about xml with Namespace prefixes. Should you have a need to parse xml with Namespace prefixes, everything should work almost identically:
NOTE: this will only work in browsers that support xml namespace prefixes such as Microsoft Edge
// XML with namespace prefixes 's', 'sn', and 'p' in a variable called txt_x000D_
txt = `_x000D_
<address xmlns:p='example.com/postal' xmlns:s='example.com/street' xmlns:sn='example.com/streetNum'>_x000D_
<s:street>Roble Ave</s:street>_x000D_
<sn:streetNumber>649</sn:streetNumber>_x000D_
<p:postalcode>94025</p:postalcode>_x000D_
</address>`;_x000D_
_x000D_
//Everything else the same_x000D_
if (window.DOMParser)_x000D_
{_x000D_
parser = new DOMParser();_x000D_
xmlDoc = parser.parseFromString(txt, "text/xml");_x000D_
}_x000D_
else // Internet Explorer_x000D_
{_x000D_
xmlDoc = new ActiveXObject("Microsoft.XMLDOM");_x000D_
xmlDoc.async = false;_x000D_
xmlDoc.loadXML(txt);_x000D_
}_x000D_
_x000D_
//The prefix should not be included when you request the xml namespace_x000D_
//Gets "streetNumber" (note there is no prefix of "sn"_x000D_
console.log(xmlDoc.getElementsByTagName("streetNumber")[0].childNodes[0].nodeValue);_x000D_
_x000D_
//Gets Street name_x000D_
console.log(xmlDoc.getElementsByTagName("street")[0].childNodes[0].nodeValue);_x000D_
_x000D_
//Gets Postal Code_x000D_
console.log(xmlDoc.getElementsByTagName("postalcode")[0].childNodes[0].nodeValue);
_x000D_
I, too, have need for this! My situation involves comparing actuals with budget for cost centers, where expenses may have been mis-applied and therefore need to be re-allocated to the correct cost center so as to match how they were budgeted. It is very time consuming to try and scan row-by-row to see if each expense item has been correctly allocated. I decided that I should apply conditional formatting to highlight any cells where the actuals did not match the budget. I set up the conditional formatting to change the background color if the actual amount under the cost center did not match the budgeted amount.
Here's what I did:
Start in cell A1 (or the first cell you want to have the formatting). Open the Conditional Formatting dialogue box and select Apply formatting based on a formula. Then, I wrote a formula to compare one cell to another to see if they match:
=A1=A50
If the contents of cells A1 and A50 are equal, the conditional formatting will be applied. NOTICE: no $$, so the cell references are RELATIVE! Therefore, you can copy the formula from cell A1 and PasteSpecial (format). If you only click on the cells that you reference as you write your conditional formatting formula, the cells are by default locked, so then you wouldn't be able to apply them anywhere else (you would have to write out a new rule for each line- YUK!)
What is really cool about this is that if you insert rows under the conditionally formatted cell, the conditional formatting will be applied to the inserted rows as well!
Something else you could also do with this: Use ISBLANK if the amounts are not going to be exact matches, but you want to see if there are expenses showing up in columns where there are no budgeted amounts (i.e., BLANK) .
This has been a real time-saver for me. Give it a try and enjoy!
These are the best and most commonly used methods for writing to and reading from files:
using System.IO;
File.AppendAllText(sFilePathAndName, sTextToWrite);//add text to existing file
File.WriteAllText(sFilePathAndName, sTextToWrite);//will overwrite the text in the existing file. If the file doesn't exist, it will create it.
File.ReadAllText(sFilePathAndName);
The old way, which I was taught in college was to use stream reader/stream writer, but the File I/O methods are less clunky and require fewer lines of code. You can type in "File." in your IDE (make sure you include the System.IO import statement) and see all the methods available. Below are example methods for reading/writing strings to/from text files (.txt.) using a Windows Forms App.
Append text to an existing file:
private void AppendTextToExistingFile_Click(object sender, EventArgs e)
{
string sTextToAppend = txtMainUserInput.Text;
//first, check to make sure that the user entered something in the text box.
if (sTextToAppend == "" || sTextToAppend == null)
{MessageBox.Show("You did not enter any text. Please try again");}
else
{
string sFilePathAndName = getFileNameFromUser();// opens the file dailog; user selects a file (.txt filter) and the method returns a path\filename.txt as string.
if (sFilePathAndName == "" || sFilePathAndName == null)
{
//MessageBox.Show("You cancalled"); //DO NOTHING
}
else
{
sTextToAppend = ("\r\n" + sTextToAppend);//create a new line for the new text
File.AppendAllText(sFilePathAndName, sTextToAppend);
string sFileNameOnly = sFilePathAndName.Substring(sFilePathAndName.LastIndexOf('\\') + 1);
MessageBox.Show("Your new text has been appended to " + sFileNameOnly);
}//end nested if/else
}//end if/else
}//end method AppendTextToExistingFile_Click
Get file name from the user via file explorer/open file dialog (you will need this to select existing files).
private string getFileNameFromUser()//returns file path\name
{
string sFileNameAndPath = "";
OpenFileDialog fd = new OpenFileDialog();
fd.Title = "Select file";
fd.Filter = "TXT files|*.txt";
fd.InitialDirectory = Environment.CurrentDirectory;
if (fd.ShowDialog() == DialogResult.OK)
{
sFileNameAndPath = (fd.FileName.ToString());
}
return sFileNameAndPath;
}//end method getFileNameFromUser
Get text from an existing file:
private void btnGetTextFromExistingFile_Click(object sender, EventArgs e)
{
string sFileNameAndPath = getFileNameFromUser();
txtMainUserInput.Text = File.ReadAllText(sFileNameAndPath); //display the text
}
See the difference yourself:
From Microsoft IE
The DOMContentLoaded event fires when parsing of the current page is complete; the load event fires when all files have finished loading from all resources, including ads and images. DOMContentLoaded is a great event to use to hookup UI functionality to complex web pages.
From Mozilla Developer Network
The DOMContentLoaded event is fired when the document has been completely loaded and parsed, without waiting for stylesheets, images, and subframes to finish loading (the load event can be used to detect a fully-loaded page).
With some error handling...
uint key = 0;
string s = "HKEY_LOCAL_MACHINE";
try
{
key = (uint)Enum.Parse(typeof(baseKey), s);
}
catch(ArgumentException)
{
//unknown string or s is null
}
nobody seem to have offered the option to get the JSON directly from the Postgresql server, using the postgres JSON capability https://www.postgresql.org/docs/9.4/static/functions-json.html
No parsing, looping or any memory consumption on the python side, which you may really want to consider if you're dealing with 100,000's or millions of rows.
from django.db import connection
sql = 'SELECT to_json(result) FROM (SELECT * FROM TABLE table) result)'
with connection.cursor() as cursor:
cursor.execute(sql)
output = cursor.fetchall()
a table like:
id, value
----------
1 3
2 7
will return a Python JSON Object
[{"id": 1, "value": 3},{"id":2, "value": 7}]
Then use json.dumps
to dump as a JSON string
its kind of hacky but it works well-ish
function close_frame(){
if(!window.should_close){
window.should_close=1;
}else if(window.should_close==1){
location.reload();
//or iframe hide or whatever
}
}
<iframe src="iframe_index.php" onload="close_frame()"></iframe>
then inside the frame
$('#close_modal_main').click(function(){
window.location = 'iframe_index.php?close=1';
});
and if you want to get fancy through a
if(isset($_GET['close'])){
die;
}
at the top of your frame page to make that reload unnoticeable
so basically the first time the frame loads it doesnt hide itself but the next time it loads itll call the onload function and the parent will have a the window var causing the frame to close
The other answers address the main thrust of the question, but just to comment on this part...
PS C:\> [array]$foo = @("bar") PS C:\> $foo -eq $null PS C:\>
How can "-eq $null" give no results? It's either $null or it's not.
It's confusing at first, but that is giving you the result of $foo -eq $null
, it's just that the result has no displayable representation.
Since $foo
holds an array, $foo -eq $null
means "return an array containing the elements of $foo
that are equal to $null
". Are there any elements of $foo
that are equal to $null
? No, so $foo -eq $null
should return an empty array. That's exactly what it does, the problem is that when an empty array is displayed at the console you see...nothing...
PS> @()
PS>
The array is still there, even if you can't see its elements...
PS> @().GetType()
IsPublic IsSerial Name BaseType
-------- -------- ---- --------
True True Object[] System.Array
PS> @().Length
0
We can use similar commands to confirm that $foo -eq $null
is returning an array that we're not able to "see"...
PS> $foo -eq $null
PS> ($foo -eq $null).GetType()
IsPublic IsSerial Name BaseType
-------- -------- ---- --------
True True Object[] System.Array
PS> ($foo -eq $null).Length
0
PS> ($foo -eq $null).GetValue(0)
Exception calling "GetValue" with "1" argument(s): "Index was outside the bounds of the array."
At line:1 char:1
+ ($foo -eq $null).GetValue(0)
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : NotSpecified: (:) [], MethodInvocationException
+ FullyQualifiedErrorId : IndexOutOfRangeException
Note that I am calling the Array.GetValue
method instead of using the indexer (i.e. ($foo -eq $null)[0]
) because the latter returns $null
for invalid indices and there's no way to distinguish them from a valid index that happens to contain $null
.
We see similar behavior if we test for $null
in/against an array that contains $null
elements...
PS> $bar = @($null)
PS> $bar -eq $null
PS> ($bar -eq $null).GetType()
IsPublic IsSerial Name BaseType
-------- -------- ---- --------
True True Object[] System.Array
PS> ($bar -eq $null).Length
1
PS> ($bar -eq $null).GetValue(0)
PS> $null -eq ($bar -eq $null).GetValue(0)
True
PS> ($bar -eq $null).GetValue(0) -eq $null
True
PS> ($bar -eq $null).GetValue(1)
Exception calling "GetValue" with "1" argument(s): "Index was outside the bounds of the array."
At line:1 char:1
+ ($bar -eq $null).GetValue(1)
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : NotSpecified: (:) [], MethodInvocationException
+ FullyQualifiedErrorId : IndexOutOfRangeException
In this case, $bar -eq $null
returns an array containing one element, $null
, which has no visual representation at the console...
PS> @($null)
PS> @($null).GetType()
IsPublic IsSerial Name BaseType
-------- -------- ---- --------
True True Object[] System.Array
PS> @($null).Length
1
I found theDuncs answer very useful and below you can find my own (refactored) version:
- (void)viewWillAppear:(BOOL)animated {
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillShow:) name:UIKeyboardWillShowNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillHide:) name:UIKeyboardWillHideNotification object:nil];
}
- (void)viewWillDisappear:(BOOL)animated {
[[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillShowNotification object:nil];
[[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillHideNotification object:nil];
}
- (void)keyboardWillShow:(NSNotification *)notification {
CGSize keyboardSize = [[[notification userInfo] objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue].size;
float newVerticalPosition = -keyboardSize.height;
[self moveFrameToVerticalPosition:newVerticalPosition forDuration:0.3f];
}
- (void)keyboardWillHide:(NSNotification *)notification {
[self moveFrameToVerticalPosition:0.0f forDuration:0.3f];
}
- (void)moveFrameToVerticalPosition:(float)position forDuration:(float)duration {
CGRect frame = self.view.frame;
frame.origin.y = position;
[UIView animateWithDuration:duration animations:^{
self.view.frame = frame;
}];
}
If this is all the object is going to store, then best literal would be
var top_brands = {
'Adidas' : 100,
'Nike' : 50
};
Then all you need is a for...in
loop.
for (var key in top_brands){
console.log(key, top_brands[key]);
}
It's because of the Security options.
Go to System Preferences... > Security & Privacy
and there should be a button saying Open Anyway
, under the General
tab.
You can avoid doing this by changing the options under Allow apps downloaded from:
, however I would recommend keeping it at the default Mac App Store and identified developers
.
awk:
awk 'NR%2{printf "%s ",$0;next;}1' yourFile
note, there is an empty line at the end of output.
sed:
sed 'N;s/\n/ /' yourFile
Agree completely with Bryan and others.
Instead, consider using multiple sections in your email that you can jump to using links and anchors (the 'a' tag). I think that you can emulate the behavior you want by including multiple copies of the text further down in your email. This is a bet messy though, so you could just have sets of anchors that link to each other and allow you to move back in forth between the 'summary' section and the 'expanded' one.
Example:
<a href="#section1">Jump to section!</a>
<p>A bunch of content</p>
<h2 id="section1">An anchor!</h2>
Clicking on the first link will move focus to the sub-section.
I would like to throw in another proposal that works if one specifically requests integers: Simply use long and use Long.MIN_VALUE for error cases. This is similar to the approach that is used for chars in Reader where Reader.read() returns an integer in the range of a char or -1 if the reader is empty.
For Float and Double, NaN can be used in a similar way.
public static long parseInteger(String s) {
try {
return Integer.parseInt(s);
} catch (NumberFormatException e) {
return Long.MIN_VALUE;
}
}
// ...
long l = parseInteger("ABC");
if (l == Long.MIN_VALUE) {
// ... error
} else {
int i = (int) l;
}
An empty string is a value (a piece of text which, incidentally, happens not to contain any letters). Null signifies no-value.
I initialize variables to null when I wish to indicate that they do not point to or contain actual values - when the intent is for no-value.
As already stated, it's a warning not an error, but (if like me) you want things to run without warnings, you can disable that warning, then re-enable it again when you're done.
SET sql_notes = 0; -- Temporarily disable the "Table already exists" warning
CREATE TABLE IF NOT EXISTS ...
SET sql_notes = 1; -- And then re-enable the warning again
Removing from an array itself is not simple, as you then have to deal with resizing. This is one of the great advantages of using something like a List<int>
instead. It provides Remove
/RemoveAt
in 2.0, and lots of LINQ extensions for 3.0.
If you can, refactor to use a List<>
or similar.
We can also use DOMNodeRemoved:
$("#youridwhichremoved").on("DOMNodeRemoved", function () {
// do stuff
})
I would generally prefer something a bit simpler, like activate
/deactivate
sub-resource (linked by a Link
header with rel=service
).
POST /groups/api/v1/groups/{group id}/activate
or
POST /groups/api/v1/groups/{group id}/deactivate
For the consumer, this interface is dead-simple, and it follows REST principles without bogging you down in conceptualizing "activations" as individual resources.
vars:
mypath: "/etc/file.txt"
tasks:
- name: checking the file exists
command: touch file.txt
when: mypath is not exists
Here's yet another, but I feel more straightforward and intuitive (or at least natural if you're used to Promises), approach. Basically, you create an Observable using Observable.create()
to wrap one
and two
as a single Observable. This is very similar to how Promise.all()
may work.
var first = someObservable.take(1);
var second = Observable.create((observer) => {
return first.subscribe(
function onNext(value) {
/* do something with value like: */
// observer.next(value);
},
function onError(error) {
observer.error(error);
},
function onComplete() {
someOtherObservable.take(1).subscribe(
function onNext(value) {
observer.next(value);
},
function onError(error) {
observer.error(error);
},
function onComplete() {
observer.complete();
}
);
}
);
});
So, what's going on here? First, we create a new Observable. The function passed to Observable.create()
, aptly named onSubscription
, is passed the observer (built from the parameters you pass to subscribe()
), which is similar to resolve
and reject
combined into a single object when creating a new Promise. This is how we make the magic work.
In onSubscription
, we subscribe to the first Observable (in the example above, this was called one
). How we handle next
and error
is up to you, but the default provided in my sample should be appropriate generally speaking. However, when we receive the complete
event, which means one
is now done, we can subscribe to the next Observable; thereby firing the second Observable after the first one is complete.
The example observer provided for the second Observable is fairly simple. Basically, second
now acts like what you would expect two
to act like in the OP. More specifically, second
will emit the first and only the first value emitted by someOtherObservable
(because of take(1)
) and then complete, assuming there is no error.
Here is a full, working example you can copy/paste if you want to see my example working in real life:
var someObservable = Observable.from([1, 2, 3, 4, 5]);
var someOtherObservable = Observable.from([6, 7, 8, 9]);
var first = someObservable.take(1);
var second = Observable.create((observer) => {
return first.subscribe(
function onNext(value) {
/* do something with value like: */
observer.next(value);
},
function onError(error) {
observer.error(error);
},
function onComplete() {
someOtherObservable.take(1).subscribe(
function onNext(value) {
observer.next(value);
},
function onError(error) {
observer.error(error);
},
function onComplete() {
observer.complete();
}
);
}
);
}).subscribe(
function onNext(value) {
console.log(value);
},
function onError(error) {
console.error(error);
},
function onComplete() {
console.log("Done!");
}
);
If you watch the console, the above example will print:
1
6
Done!
Since Java 9.0 JDWP supports only local connections by default. http://www.oracle.com/technetwork/java/javase/9-notes-3745703.html#JDK-8041435
For remote debugging one should run program with *:
in address:
-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=*:8000
It looks like you might have inserted an extra +
at the beginning of each line, which R is interpreting as a unary operator (like -
interpreted as negation, rather than subtraction). I think what will work is
ggplot(combined.data, aes(x = region, y = expression, fill = species)) +
geom_boxplot() +
scale_fill_manual(values = c("yellow", "orange")) +
ggtitle("Expression comparisons for ACTB") +
theme(axis.text.x = element_text(angle=90, face="bold", colour="black"))
Perhaps you copy and pasted from the output of an R console? The console uses +
at the start of the line when the input is incomplete.
To get actual hour, minute and seconds as appear on watch try this code
val sec = (milliSec/1000) % 60
val min = ((milliSec/1000) / 60) % 60
val hour = ((milliSec/1000) / 60) / 60
One problem is that easy_install is set up to download and install .egg files or source distributions (contained within .tgz, .tar, .tar.gz, .tar.bz2, or .zip files). It doesn't know how to deal with the PyWin32 extensions because they are put within a separate installer executable. You will need to download the appropriate PyWin32 installer file (for Python 2.7) and run it yourself. When you run easy_install again (provided you have it installed right, like in Sergio's instructions), you should see that your winpexpect package has been installed correctly.
Since it's Windows and open source we are talking about, it can often be a messy combination of install methods to get things working properly. However, easy_install is still better than hand-editing configuration files, for sure.
Alt + Command + Shift will add a cursor to the next instance of what you've selected. E.g. a variable or function name
If you want to compare two arrays and check if any object is same in both arrays it will works. Example :
Array1 = [a,b,c,d]
Array2 = [d,e,f,g]
Here, 'd' is common in both array so this function will return true value.
cehckArray(array1, array2) {
for (let i = 0; i < array1.length; i++) {
for (let j = 0; j < array2.length; j++) {
if (array1[i] === array2[j]) {
return true;
}
}
}
// Return if no common element exist
return false;
}
I installed 32-bit JVM and retried it again, looks like the following does tell you JVM bitness, not OS arch:
System.getProperty("os.arch");
#
# on a 64-bit Linux box:
# "x86" when using 32-bit JVM
# "amd64" when using 64-bit JVM
This was tested against both SUN and IBM JVM (32 and 64-bit). Clearly, the system property is not just the operating system arch.
When it comes to the decision between let and const (both block scoped), always prefer const so that the usage is clear in the code. That way, if you try to redeclare the variable, you'll get an error. If there's no other choice but redeclare it, just switch for let. Note that, as Anthony says, the const values aren't immutable (for instances, a const object can have properties mutated).
When it comes to var, since ES6 is out, I never used it in production code and can't think of a use case for it. One point that might consider one to use it is JavaScript hosting - while let and const are not hoisted, var declaration is. Yet, beware that variables declared with var have a function scope, not a block scope («if declared outside any function, they will be globally available throughout the program; if declared within a function, they are only available within the function itself», in HackerRank - Variable Declaration Keywords). You can think of let as the block scoped version of var.
There is something out there, context aware resizing, don't know if you will be able to use it, but it's worth looking at, that's for sure
A nice video demo (Enlarging appears towards the middle) http://www.youtube.com/watch?v=vIFCV2spKtg
Here there could be some code. http://www.semanticmetadata.net/2007/08/30/content-aware-image-resizing-gpl-implementation/
Was that overkill? Maybe there are some easy filters you can apply to an enlarged image to blur the pixels a bit, you could look into that.
Link to the PEP discussing the new bool type in Python 2.3: http://www.python.org/dev/peps/pep-0285/.
When converting a bool to an int, the integer value is always 0 or 1, but when converting an int to a bool, the boolean value is True for all integers except 0.
>>> int(False)
0
>>> int(True)
1
>>> bool(5)
True
>>> bool(-5)
True
>>> bool(0)
False
explanation: with analogies. hopefully it will help you.
Context
I work on the 21 st floor of a building. And I'm paranoid about fire. Every now and again, somewhere in the world, a fire is burning down a sky scraper. But luckily we have an instruction manual somewhere here on what to do in case of fire:
FireEscape()
This is basically a virtual method called FireEscape()
Virtual Method
This plan is pretty good for 99% of the circumstances. It's a basic plan which works. But there is a 1% chance that the fire escape is blocked or damaged in which case you are completely screwed and you'll become toast unless you take some drastic action. With virtual methods you can do just that: you can override the basic FireEscape() plan with your own version of the plan:
In other words virtual methods provide a basic plan, which can be overriden if you need to. Subclasses can override the parent class' virtual method if the programmer deems it appropriate.
Abstract methods
Not all organisations are well drilled. Some organisations don't do fire drills. They don't have an overall escape policy. Every man is for himself. Management are only interested in such a policy existing.
In other words, each person is forced to develop his own FireEscape() method. One guy will walk out the fire escape. Another guy will parachute. Another guy will use rocket propulsion technology to fly away from the building. Another guy will abseil out. Management don't care how you escape, so long as you have a basic FireEscape() plan - if they don't you can be guaranteed OHS will come down on the organisation like a tonne of bricks. This is what is meant by an abstract method.
What's the difference between the two again?
Abstract method: sub classes are forced to implement their own FireEscape method. With a virtual method, you have a basic plan waiting for you, but can choose to implement your own if it's not good enough.
Now that wasn't so hard was it?
First, this is the directory layout that I am using:
.
+-- include
¦ +-- class1.hpp
¦ +-- ...
¦ +-- class2.hpp
+-- src
+-- class1.cpp
+-- ...
+-- class2.cpp
After a couple of days taking a look into this, this is my favourite way of doing this thanks to modern CMake:
cmake_minimum_required(VERSION 3.5)
project(mylib VERSION 1.0.0 LANGUAGES CXX)
set(DEFAULT_BUILD_TYPE "Release")
if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
message(STATUS "Setting build type to '${DEFAULT_BUILD_TYPE}' as none was specified.")
set(CMAKE_BUILD_TYPE "${DEFAULT_BUILD_TYPE}" CACHE STRING "Choose the type of build." FORCE)
# Set the possible values of build type for cmake-gui
set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS "Debug" "Release" "MinSizeRel" "RelWithDebInfo")
endif()
include(GNUInstallDirs)
set(SOURCE_FILES src/class1.cpp src/class2.cpp)
add_library(${PROJECT_NAME} ...)
target_include_directories(${PROJECT_NAME} PUBLIC
$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
$<INSTALL_INTERFACE:include>
PRIVATE src)
set_target_properties(${PROJECT_NAME} PROPERTIES
VERSION ${PROJECT_VERSION}
SOVERSION 1)
install(TARGETS ${PROJECT_NAME} EXPORT MyLibConfig
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
install(DIRECTORY include/ DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/${PROJECT_NAME})
install(EXPORT MyLibConfig DESTINATION share/MyLib/cmake)
export(TARGETS ${PROJECT_NAME} FILE MyLibConfig.cmake)
After running CMake and installing the library, there is no need to use Find***.cmake files, it can be used like this:
find_package(MyLib REQUIRED)
#No need to perform include_directories(...)
target_link_libraries(${TARGET} mylib)
That's it, if it has been installed in a standard directory it will be found and there is no need to do anything else. If it has been installed in a non-standard path, it is also easy, just tell CMake where to find MyLibConfig.cmake using:
cmake -DMyLib_DIR=/non/standard/install/path ..
I hope this helps everybody as much as it has helped me. Old ways of doing this were quite cumbersome.
Change the "Color Scheme Font". and you will get what you want. I have faced the same issue and fixed it.
Use stringi
package and stri_length
function
> stri_length(c("ala ma kota","ABC",NA))
[1] 11 3 NA
Why? Because it is the FASTEST among presented solutions :)
require(microbenchmark)
require(stringi)
require(stringr)
x <- c(letters,NA,paste(sample(letters,2000,TRUE),collapse=" "))
microbenchmark(nchar(x),str_length(x),stri_length(x))
Unit: microseconds
expr min lq median uq max neval
nchar(x) 11.868 12.776 13.1590 13.6475 41.815 100
str_length(x) 30.715 33.159 33.6825 34.1360 173.400 100
stri_length(x) 2.653 3.281 4.0495 4.5380 19.966 100
and also works fine with NA's
nchar(NA)
## [1] 2
stri_length(NA)
## [1] NA
Based on Ramon's answer I run into an error. The problem where spaces in the JSON I tried to write I got it fixed by changing the task in the playbook to look like:
- copy:
content: "{{ your_json_feed }}"
dest: "/path/to/destination/file"
As of now I am not sure why this was needed. My best guess is that it had something to do with how variables are replaced in Ansible and the resulting file is parsed.
I'd like to give my two cents to this, I'm sorry if any other answer contains what I will explain, I read most of it and haven't find it, but I could have missed something.
I saw a lot of missconceptions and a lot of good explanations, just want to explain async in terms of how it differs from parallel programming, that I believe will make things easier to understand.
When you need to do long computations, processor intensive work, you should opt to use parallel programming, if it's possible, to optimize cores usage. This opens some threads and process things simultaneosly.
Say you have an array of numbers and want to make some expensive long calculation with every and each one of than. Parallel is your friend.
Asyncronous programming is used in a different use case.
It's used to free your thread when you are waiting for something that do not depend on your processor, like IO for example (writing and reading to/from disk), your thread does nothing when you do IO, same thing when you are awaiting for some result from an expensive query to return from DB.
Async methods free your thread when it's waiting for something long to return results. This thread can be used by other parts of your application (in a web app it process other requests, for example) or can return to OS for other use.
When your result is done, the same thread (or another one) is given back to your application to resume processing.
Async programming is not mandatory (but a good practice) in a multithreaded environment like .net, in a web app other threads will respond to new requests, but if you are in a singlethreaded framework like nodejs it's mandatory, because you can't block your only thread, or you won't be able to anwser any other request.
To summarize, long processor intensive calculations will benefit more from parallel programming and long waiting periods that do not depend on your processor, like IO or DB query or a call to some API will benefit more from async programming.
That's why Entity Framework, for example, has an async api to save, list, find, etc...
Remember that async/await is not the same as wait or waitAll, the contexts are different. Async/await release the thread and are asyncronous programming. wait / waitAll blocks all threads (they are not released) to force syncronization in parallel context... different stuff...
Hope this is usefull for someone...
In addition to Felix's answer,
href={`/posts/${posts.id}`}
would work well too. This is nice because it's all in one string.
Add System.IO.Compression.ZipFile as nuget reference it is working
While <strong>
and <em>
are of course more semantically correct, there seem definite legitimate reasons to use the <b>
and <i>
tags for customer-written content.
In such content, words or phrases may be bolded or italicized and it is generally not up to us to analyze the semantic reasoning for such bolding or italicizing.
Further, such content may refer to bolded and italicized words and phrases to convey a specific meaning.
An example would be an english exam question which instructs a student to replace the bolded word.
l = [1,2,3,4,5]
sum = 0
for x in l:
sum = sum + x
And you can change l for any list you want.
You simply pass the FormControl an array of validators.
Here's an example showing how you can add validators to an existing FormControl:
this.form.controls["firstName"].setValidators([Validators.minLength(1), Validators.maxLength(30)]);
Note, this will reset any existing validators you added when you created the FormControl.
SELECT DATENAME(MONTH, GETDATE())
+ RIGHT(CONVERT(VARCHAR(12), GETDATE(), 107), 9) AS [Month DD, YYYY]
OR Date without Comma Between date and year, you can use the following
SELECT DATENAME(MONTH, GETDATE()) + ' ' + CAST(DAY(GETDATE()) AS VARCHAR(2))
+ ' ' + CAST(YEAR(GETDATE()) AS VARCHAR(4)) AS [Month DD YYYY]
Use:
git diff 15dc8^!
as described in the following fragment of git-rev-parse(1) manpage (or in modern git gitrevisions(7) manpage):
Two other shorthands for naming a set that is formed by a commit and its parent commits exist. The r1^@ notation means all parents of r1. r1^! includes commit r1 but excludes all of its parents.
This means that you can use 15dc8^!
as a shorthand for 15dc8^..15dc8
anywhere in git where revisions are needed. For diff command the git diff 15dc8^..15dc8
is understood as git diff 15dc8^ 15dc8
, which means the difference between parent of commit (15dc8^
) and commit (15dc8
).
Note: the description in git-rev-parse(1)
manpage talks about revision ranges, where it needs to work also for merge commits, with more than one parent. Then r1^!
is "r1 --not r1^@
" i.e. "r1 ^r1^1 ^r1^2 ...
"
Also, you can use git show COMMIT
to get commit description and diff for a commit. If you want only diff, you can use git diff-tree -p COMMIT
A very direct way is to just use read.table
on your character vector:
> read.table(text = text, sep = ".", colClasses = "character")
V1 V2 V3 V4
1 F US CLE V13
2 F US CA6 U13
3 F US CA6 U13
4 F US CA6 U13
5 F US CA6 U13
6 F US CA6 U13
7 F US CA6 U13
8 F US CA6 U13
9 F US DL U13
10 F US DL U13
11 F US DL U13
12 F US DL Z13
13 F US DL Z13
colClasses
needs to be specified, otherwise F
gets converted to FALSE
(which is something I need to fix in "splitstackshape", otherwise I would have recommended that :) )
Alternatively, you can use my cSplit
function, like this:
cSplit(as.data.table(text), "text", ".")
# text_1 text_2 text_3 text_4
# 1: F US CLE V13
# 2: F US CA6 U13
# 3: F US CA6 U13
# 4: F US CA6 U13
# 5: F US CA6 U13
# 6: F US CA6 U13
# 7: F US CA6 U13
# 8: F US CA6 U13
# 9: F US DL U13
# 10: F US DL U13
# 11: F US DL U13
# 12: F US DL Z13
# 13: F US DL Z13
Or, separate
from "tidyr", like this:
library(dplyr)
library(tidyr)
as.data.frame(text) %>% separate(text, into = paste("V", 1:4, sep = "_"))
# V_1 V_2 V_3 V_4
# 1 F US CLE V13
# 2 F US CA6 U13
# 3 F US CA6 U13
# 4 F US CA6 U13
# 5 F US CA6 U13
# 6 F US CA6 U13
# 7 F US CA6 U13
# 8 F US CA6 U13
# 9 F US DL U13
# 10 F US DL U13
# 11 F US DL U13
# 12 F US DL Z13
# 13 F US DL Z13
I think it is confusing to think of it in terms of negative numbers. Since it is a logarithm think of the negative values the same way you think of powers of ten. 10^3 = 1000 while 10^-3 = 0.001.
With this in mind and using the formulas from S Lists's answer (and assuming our base power is 1mW in all these cases) we can build a little table:
|--------|-------------------|
| P(dBm) | P(mW) |
|--------|-------------------|
| 50 | 100000 |
| 40 | 10000 | strong transmitter
| 30 | 1000 | ^
| 20 | 100 | |
| 10 | 10 | |
| 0 | 1 |
| -10 | 0.1 |
| -20 | 0.01 |
| -30 | 0.001 |
| -40 | 0.0001 |
| -50 | 0.00001 | |
| -60 | 0.000001 | |
| -70 | 0.0000001 | v
| -80 | 0.00000001 | sensitive receiver
| -90 | 0.000000001 |
|--------|-------------------|
When I think of it like this I find that it's easier to see that the more negative the dBm value then the farther to the right of the decimal the actual power value is.
When it comes to mobile networks, it not so much that they aren't powerful enough, rather it is that they are more sensitive. When you see receivers specs with dBm far into the negative values, then what you are seeing is more sensitive equipment.
Normally you would want your transmitter to be powerful (further in to the positives) and your receiver to be sensitive (further in to the negatives).
I made a simple wrapper for the Fullscreen API, called screenfull.js, to smooth out the prefix mess and fix some inconsistencies in the different implementations. Check out the demo to see how the Fullscreen API works.
Recommended reading:
If you're using IDLE, you can use Ctrl+]
to indent and Ctrl+[
to unindent.
Include using namespace System.Linq
List<string> stringList = line.Split(',').ToList();
you can make use of it with ease for iterating through each item.
foreach(string str in stringList)
{
}
String.Split()
returns an array, hence convert it to a list using ToList()
I had to be absolutely sure the view was not just removed from DOM but also completely unbound from events.
destroy_view: function() {
// COMPLETELY UNBIND THE VIEW
this.undelegateEvents();
this.$el.removeData().unbind();
// Remove view from DOM
this.remove();
Backbone.View.prototype.remove.call(this);
}
Seemed like overkill to me, but other approaches did not completely do the trick.
var randomNums = function(amount, limit) {
var result = [],
memo = {};
while(result.length < amount) {
var num = Math.floor((Math.random() * limit) + 1);
if(!memo[num]) { memo[num] = num; result.push(num); };
}
return result; }
This seems to work, and its constant lookup for duplicates.
2020 edit
Use URLSearchParams, as this job no longer requires any kind of custom code. Browsers can do this for you with a single constructor:
const str = "1111342=Adam%20Franco&348572=Bob%20Jones";
const data = new URLSearchParams(str);
for (pair of data) console.log(pair)
yields
Array [ "1111342", "Adam Franco" ]
Array [ "348572", "Bob Jones" ]
So there is no reason to use regex for this anymore.
Original answer
If you don't want to rely on the "blind matching" that comes with running exec
style matching, JavaScript does come with match-all functionality built in, but it's part of the replace
function call, when using a "what to do with the capture groups" handling function:
var data = {};
var getKeyValue = function(fullPattern, group1, group2, group3) {
data[group2] = group3;
};
mystring.replace(/(?:&|&)?([^=]+)=([^&]+)/g, getKeyValue);
done.
Instead of using the capture group handling function to actually return replacement strings (for replace handling, the first arg is the full pattern match, and subsequent args are individual capture groups) we simply take the groups 2 and 3 captures, and cache that pair.
So, rather than writing complicated parsing functions, remember that the "matchAll" function in JavaScript is simply "replace" with a replacement handler function, and much pattern matching efficiency can be had.
You can use scatter
for this, but that requires having numerical values for your key1
, and you won't have a legend, as you noticed.
It's better to just use plot
for discrete categories like this. For example:
import matplotlib.pyplot as plt
import numpy as np
import pandas as pd
np.random.seed(1974)
# Generate Data
num = 20
x, y = np.random.random((2, num))
labels = np.random.choice(['a', 'b', 'c'], num)
df = pd.DataFrame(dict(x=x, y=y, label=labels))
groups = df.groupby('label')
# Plot
fig, ax = plt.subplots()
ax.margins(0.05) # Optional, just adds 5% padding to the autoscaling
for name, group in groups:
ax.plot(group.x, group.y, marker='o', linestyle='', ms=12, label=name)
ax.legend()
plt.show()
If you'd like things to look like the default pandas
style, then just update the rcParams
with the pandas stylesheet and use its color generator. (I'm also tweaking the legend slightly):
import matplotlib.pyplot as plt
import numpy as np
import pandas as pd
np.random.seed(1974)
# Generate Data
num = 20
x, y = np.random.random((2, num))
labels = np.random.choice(['a', 'b', 'c'], num)
df = pd.DataFrame(dict(x=x, y=y, label=labels))
groups = df.groupby('label')
# Plot
plt.rcParams.update(pd.tools.plotting.mpl_stylesheet)
colors = pd.tools.plotting._get_standard_colors(len(groups), color_type='random')
fig, ax = plt.subplots()
ax.set_color_cycle(colors)
ax.margins(0.05)
for name, group in groups:
ax.plot(group.x, group.y, marker='o', linestyle='', ms=12, label=name)
ax.legend(numpoints=1, loc='upper left')
plt.show()
SYSDATETIME()
and SYSUTCDATETIME()
are the DateTime2 equivalents of
which return a DateTime.
DateTime2 is now the preferred method for storing the date and time in SQL Server 2008+. See the following StackOverflow Post.
Switch off compatibility view if you use IE9.
Do a str.replace('; ', ', ')
and then a str.split(', ')
UPDATE - I do not have Total DNS enabled at GoDaddy because the domain is hosted at DiscountASP. As such, I could not add an A Record and that is why GoDaddy was only offering to forward my subdomain to a different site. I finally realized that I had to go to DiscountASP to add the A Record to point to DreamHost. Now waiting to see if it all works!
Of course, use the stinkin' IP! I'm not sure why that wasn't registering for me. I guess their helper text example of pointing to another url was throwing me off.
Thanks for both of the replies. I 'got it' as soon as I read Bryant's response which was first but Saif kicked it up a notch and added a little more detail.
Thanks!
And how I implemented this
<script type="text/javascript">
!(window.ActiveXObject) && "ActiveXObject"
function isIE11(){
return !!navigator.userAgent.match(/Trident.*rv[ :]*11\./);
}
</script>
The query will error if multiple data files (e.g. ".ndf" file types) are used in one of the databases.
Here's a version of your query using joins instead of the sub-queries.
Cheers!
SELECT
db.name AS DBName,
db.database_id,
mfr.physical_name AS DataFile,
mfl.physical_name AS LogFile
FROM sys.databases db
JOIN sys.master_files mfr ON db.database_id=mfr.database_id AND mfr.type_desc='ROWS'
JOIN sys.master_files mfl ON db.database_id=mfl.database_id AND mfl.type_desc='LOG'
ORDER BY db.database_id
Using an iframe
to "render" a PDF will not work on all browsers; it depends on how the browser handles PDF files. Some browsers (such as Firefox and Chrome) have a built-in PDF rendered which allows them to display the PDF inline where as some older browsers (perhaps older versions of IE attempt to download the file instead).
Instead, I recommend checking out PDFObject which is a Javascript library to embed PDFs in HTML files. It handles browser compatibility pretty well and will most likely work on IE8.
In your HTML, you could set up a div
to display the PDFs:
<div id="pdfRenderer"></div>
Then, you can have Javascript code to embed a PDF in that div
:
var pdf = new PDFObject({
url: "https://something.com/HTC_One_XL_User_Guide.pdf",
id: "pdfRendered",
pdfOpenParams: {
view: "FitH"
}
}).embed("pdfRenderer");
Hashes can not be decrypted check this out.
If you want to encrypt-decrypt, use a two way encryption function of your database like - AES_ENCRYPT (in MySQL).
But I'll suggest CRYPT_BLOWFISH algorithm for storing password. Read this- http://php.net/manual/en/function.crypt.php and http://us2.php.net/manual/en/function.password-hash.php
For Blowfish by crypt()
function -
crypt('String', '$2a$07$twentytwocharactersalt$');
password_hash
will be introduced in PHP 5.5.
$options = [
'cost' => 7,
'salt' => 'BCryptRequires22Chrcts',
];
password_hash("rasmuslerdorf", PASSWORD_BCRYPT, $options);
Once you have stored the password, you can then check if the user has entered correct password by hashing it again and comparing it with the stored value.
Don't serialize FormData
with POST
ing to server. Do this:
this.uploadFileToUrl = function(file, title, text, uploadUrl){
var payload = new FormData();
payload.append("title", title);
payload.append('text', text);
payload.append('file', file);
return $http({
url: uploadUrl,
method: 'POST',
data: payload,
//assign content-type as undefined, the browser
//will assign the correct boundary for us
headers: { 'Content-Type': undefined},
//prevents serializing payload. don't do it.
transformRequest: angular.identity
});
}
Then use it:
MyService.uploadFileToUrl(file, title, text, uploadUrl).then(successCallback).catch(errorCallback);
I believe what you are looking for is assign_attributes
.
It's basically the same as update_attributes but it doesn't save the record:
class User < ActiveRecord::Base
attr_accessible :name
attr_accessible :name, :is_admin, :as => :admin
end
user = User.new
user.assign_attributes({ :name => 'Josh', :is_admin => true }) # Raises an ActiveModel::MassAssignmentSecurity::Error
user.assign_attributes({ :name => 'Bob'})
user.name # => "Bob"
user.is_admin? # => false
user.new_record? # => true
I am here by separating both the usages by marking them as File Read(java.io) and Resource Read(ClassLoader.getResourceAsStream()).
File Read - 1. Works on local file system. 2. Tries to locate the file requested from current JVM launched directory as root 3. Ideally good when using files for processing in a pre-determined location like,/dev/files or C:\Data.
Resource Read - 1. Works on class path 2. Tries to locate the file/resource in current or parent classloader classpath. 3. Ideally good when trying to load files from packaged files like war or jar.
For get the left part of the URL:
?HttpContext.Current.Request.Url.GetLeftPart(UriPartial.Authority)
"http://localhost:1714"
For get the application (web) name:
?HttpRuntime.AppDomainAppVirtualPath
"/"
With this, you are available to add your relative path after that obtaining the complete URL.
you can use
<meta http-equiv="refresh" content="10" >
just add it after the head tags
where 10 is the time your page will refresh itself
It sounds like your workbook got set to Manual Calculation. You can change this to Automatic by going to Formulas > Calculation > Calculation Options > Automatic.
Manual calculation can be useful to reduce computational load and improve responsiveness in workbooks with large amounts of formulas. The idea is that you can look at data and make changes, then choose when you want to make your computer go through the effort of calculation.
I was facing the same problem. Y did this in my "WebSecurity.java", it's about the setExposedHeaders method in the cors configuration.
@Bean
CorsConfigurationSource corsConfigurationSource() {
CorsConfiguration configuration = new CorsConfiguration();
configuration.setAllowCredentials(true);
configuration.setAllowedOrigins(Arrays.asList(FRONT_END_SERVER));
configuration.setAllowedMethods(Arrays.asList("GET", "POST", "PUT", "DELETE"));
configuration.setAllowedHeaders(Arrays.asList("X-Requested-With","Origin","Content-Type","Accept","Authorization"));
// This allow us to expose the headers
configuration.setExposedHeaders(Arrays.asList("Access-Control-Allow-Headers", "Authorization, x-xsrf-token, Access-Control-Allow-Headers, Origin, Accept, X-Requested-With, " +
"Content-Type, Access-Control-Request-Method, Access-Control-Request-Headers"));
UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
source.registerCorsConfiguration("/**", configuration);
return source;
}
I hope it works.
I get consistent behaviour for both instances:
>>> ls[0:10]
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
>>> ls[10:-1]
[10, 11, 12, 13, 14, 15, 16, 17, 18]
Note, though, that tenth element of the list is at index 9, since the list is 0-indexed. That might be where your hang-up is.
In other words, [0:10]
doesn't go from index 0-10, it effectively goes from 0 to the tenth element (which gets you indexes 0-9, since the 10 is not inclusive at the end of the slice).
In my case the none of the answers above worked! since I had different productFlavors just adding repositories{
flatDir{
dirs 'libs'
}
}
did not work! I ended up with specifying exact location of libs directory:
repositories{
flatDir{
dirs 'src/main/libs'
}
}
Guess one should introduce flatDirs like this when there's different productFlavors in build.gradle
var checkbox = $( "#checkbox" );
checkbox.val( checkbox[0].checked ? "true" : "false" );
This will set the value
of the checkbox to "true"
or "false"
(value property
is a string)
, depending whether it's unchecked
or checked
.
Works in jQuery >= 1.0
$("ul").empty() should work and clear the childrens. you can see it here:
I like to use -v
for verbose mode.
It'll give you the commit id, comments and all affected files.
svn log -v --limit 4
Example of output:
I added some migrations and deleted a test xml file ------------------------------------------------------------------------ r58687 | mr_x | 2012-04-02 15:31:31 +0200 (Mon, 02 Apr 2012) | 1 line Changed paths: A /trunk/java/App/src/database/support A /trunk/java/App/src/database/support/MIGRATE A /trunk/java/App/src/database/support/MIGRATE/remove_device.sql D /trunk/java/App/src/code/test.xml
Use below css to align Label with Checkbox
.chkbox label
{
position: relative;
top: -2px;
}
<div class="chkbox">
<asp:CheckBox ID="Ckbox" runat="server" Text="Check Box Alignment"/>
</div>
My solution:
Change back to bash
:
source .bashrc
next:
echo $PATH
copy this:
/home/frank/.asdf/shims:/home/frank/....
back to the zsh
:
source .zsh
open .zshrc
:
and paste:
export PATH=/home/frank/.asdf/shims:/home/frank/....
restart terminal
You can use the finish
command.
finish
: Continue running until just after function in the selected stack frame returns. Print the returned value (if any). This command can be abbreviated asfin
.
(See 5.2 Continuing and Stepping.)
<%
String session_val = (String)session.getAttribute("sessionval");
System.out.println("session_val"+session_val);
%>
<html>
<head>
<script type="text/javascript">
var session_obj= '<%=session_val%>';
alert("session_obj"+session_obj);
</script>
</head>
</html>
Use the following:
type file.txt | findstr /v ERROR | findstr /v REFERENCE
This has the advantage of using standard tools in the Windows OS, rather than having to find and install sed/awk/perl and such.
See the following transcript for it in operation:
C:\>type file.txt Good Line of data bad line of C:\Directory\ERROR\myFile.dll Another good line of data bad line: REFERENCE Good line C:\>type file.txt | findstr /v ERROR | findstr /v REFERENCE Good Line of data Another good line of data Good line
Queue
Queue is a ordered collection of items.
Items are deleted at one end called ‘front’ end of the queue.
Items are inserted at other end called ‘rear’ of the queue.
The first item inserted is the first to be removed (FIFO).
Stack
Stack is a collection of items.
It allows access to only one data item: the last item inserted.
Items are inserted & deleted at one end called ‘Top of the stack’.
It is a dynamic & constantly changing object.
All the data items are put on top of the stack and taken off the top
This structure of accessing is known as Last in First out structure (LIFO)
Here is what I use.
Write-Host -NoNewLine 'Press any key to continue...';
$null = $Host.UI.RawUI.ReadKey('NoEcho,IncludeKeyDown');
You might want to try:
TypeConverter conv = TypeDescriptor.GetConverter(typeof(int));
conv.ConvertFrom(mystring);
do your own null check and return int?
if necessary. You'll also want to wrap that in a try {}
As said before, @Column(unique = true)
is a shortcut to UniqueConstraint
when it is only a single field.
From the example you gave, there is a huge difference between both.
@Column(unique = true)
@ManyToOne(optional = false, fetch = FetchType.EAGER)
private ProductSerialMask mask;
@Column(unique = true)
@ManyToOne(optional = false, fetch = FetchType.EAGER)
private Group group;
This code implies that both mask
and group
have to be unique, but separately. That means that if, for example, you have a record with a mask.id = 1 and tries to insert another record with mask.id = 1, you'll get an error, because that column should have unique values. The same aplies for group.
On the other hand,
@Table(
name = "product_serial_group_mask",
uniqueConstraints = {@UniqueConstraint(columnNames = {"mask", "group"})}
)
Implies that the values of mask + group combined should be unique. That means you can have, for example, a record with mask.id = 1 and group.id = 1, and if you try to insert another record with mask.id = 1 and group.id = 2, it'll be inserted successfully, whereas in the first case it wouldn't.
If you'd like to have both mask and group to be unique separately and to that at class level, you'd have to write the code as following:
@Table(
name = "product_serial_group_mask",
uniqueConstraints = {
@UniqueConstraint(columnNames = "mask"),
@UniqueConstraint(columnNames = "group")
}
)
This has the same effect as the first code block.
For what it's worth adding to the discussion... what I did that ended up helping me... Since the pipeline is run within a workspace within a docker image that is cleaned up each time it runs. I grabbed the credentials needed to perform necessary operations on the repo within my pipeline and stored them in a .netrc file. this allowed me to authorize the git repo operations successfully.
withCredentials([usernamePassword(credentialsId: '<credentials-id>', passwordVariable: 'GIT_PASSWORD', usernameVariable: 'GIT_USERNAME')]) {
sh '''
printf "machine github.com\nlogin $GIT_USERNAME\n password $GIT_PASSWORD" >> ~/.netrc
// continue script as necessary working with git repo...
'''
}
Not as clean as bool(c) but it was an excuse to use ternary.
def myfunc(a,b):
return True if a.intersection(b) else False
Also using a bit of the same logic there is no need to assign to c unless you are using it for something else.
def myfunc(a,b):
return bool(a.intersection(b))
Finally, I would assume you want a True / False value because you are going to perform some sort of boolean test with it. I would recommend skipping the overhead of a function call and definition by simply testing where you need it.
Instead of:
if (myfunc(a,b)):
# Do something
Maybe this:
if a.intersection(b):
# Do something
A "program" can be as simple as a "set of instructions" to implement a logic.
It can be part of an "application", "component", "service" or another "program".
Application is a possibly a collection of coordinating program instances to solve a user's purpose.
FYI the available version for raring in Chris Lea's repo is currently 0.8.25
sudo apt-get install nodejs=0.8.25-2chl1~raring1
If, as I just encountered, you happen to have a jar file listed in the Project Structures->Libraries that is not in your classpath, the correct answer can be found by following the link given by @CrazyCoder above: Look here http://www.jetbrains.com/idea/webhelp/configuring-module-dependencies-and-libraries.html
This says that to add the jar file as a module dependency within the Project Structure dialog:
$timeFirst = strtotime('2011-05-12 18:20:20');
$timeSecond = strtotime('2011-05-13 18:20:20');
$differenceInSeconds = $timeSecond - $timeFirst;
You will then be able to use the seconds to find minutes, hours, days, etc.
Even if you could generate the PDF in-memory in JavaScript, you would still have the issue of how to transfer that data to the user. It's hard for JavaScript to just push a file at the user.
To get the file to the user, you would want to do a server submit in order to get the browser to bring up the save dialog.
With that said, it really isn't too hard to generate PDFs. Just read the spec.
The simplest way to get tooltips in most browsers is to set some text in the title attribute.
eg.
<img src="myimage.jpg" alt="a cat" title="My cat sat on a table" />
produces (hover your mouse over the image):
a cat http://www.imagechicken.com/uploads/1275939952008633500.jpg
Title attributes can be applied to most HTML elements.
Visual Basic has built-in constants for newlines:
vbCr
= Chr$(13) = CR (carriage-return character) - used by Mac OS and Apple II family
vbLf
= Chr$(10) = LF (line-feed character) - used by Linux and Mac OS X
vbCrLf
= Chr$(13) & Chr$(10) = CRLF (carriage-return followed by line-feed) - used by Windows
vbNewLine
= the same as vbCrLf
I would suggest the use of jquery mate.
With jQuery you would then be able to get the id of this element by
$(this).attr('id');
without jquery, if I remember correctly we used to access the id with a
this.id
Hope that helps :)
$('td').click(function() {
var myCol = $(this).index();
var $tr = $(this).closest('tr');
var myRow = $tr.index();
});
I have updated your jsfiddle and here is CSS changes you need to do:
#content
{
min-width:700px;
margin-right: -210px;
width:100%;
float:left;
background-color:AppWorkspace;
}
Where does it fail?
I agree that your issue is probably that your dataset of 600,000 rows is probably just too large. I see that you are then adding it to Session. If you are using Sql session state, it will have to serialize that data as well.
Even if you dispose of your objects properly, you will always have at least 2 copies of this dataset in memory if you run it twice, once in session, once in procedural code. This will never scale in a web application.
Do the math, 600,000 rows, at even 1-128 bit guid per row would yield 9.6 megabytes (600k * 128 / 8) of just data, not to mention the dataset overhead.
Trim down your results.
When you say str
, you should be careful what you mean:
do you mean the variable str
?
or do you mean the object referenced by str
?
In your StringBuffer
example you are not altering the value of str
, and in your String
example you are not altering the state of the String
object.
The most poignant way to experience the difference would be something like this:
static void change(String in) {
in = in + " changed";
}
static void change(StringBuffer in) {
in.append(" changed");
}
public static void main(String[] args) {
StringBuffer sb = new StringBuffer("value");
String str = "value";
change(sb);
change(str);
System.out.println("StringBuffer: "+sb);
System.out.println("String: "+str);
}
What the error is telling, is that you can't convert an entire list into an integer. You could get an index from the list and convert that into an integer:
x = ["0", "1", "2"]
y = int(x[0]) #accessing the zeroth element
If you're trying to convert a whole list into an integer, you are going to have to convert the list into a string first:
x = ["0", "1", "2"]
y = ''.join(x) # converting list into string
z = int(y)
If your list elements are not strings, you'll have to convert them to strings before using str.join
:
x = [0, 1, 2]
y = ''.join(map(str, x))
z = int(y)
Also, as stated above, make sure that you're not returning a nested list.
pattern="[a-z0-9._%+-]{1,40}[@]{1}[a-z]{1,10}[.]{1}[a-z]{3}"
<input type="email" class="form-control" id="driver_email" placeholder="Enter Driver Email" name="driver_email" pattern="[a-z0-9._%+-]{1,40}[@]{1}[a-z]{1,10}[.]{1}[a-z]{3}" required="">
For those of you who work on a remote computer with ssh
, and maintain a Jupyter notebook server inside a tmux
session, then after you exit the Jupyter notebook, you also have to close the pane that was used to maintain your Jupyter notebook server. Otherwise, it could cause issues when you try to log out from the ssh
.
As has already been mention in various answers here, the Thread
class currently (4.7.2) provides several constructors and a Start
method with overloads.
These relevant constructors for this question are:
public Thread(ThreadStart start);
and
public Thread(ParameterizedThreadStart start);
which either take a ThreadStart
delegate or a ParameterizedThreadStart
delegate.
The corresponding delegates look like this:
public delegate void ThreadStart();
public delegate void ParameterizedThreadStart(object obj);
So as can be seen, the correct constructor to use seems to be the one taking a ParameterizedThreadStart
delegate so that some method conform to the specified signature of the delegate can be started by the thread.
A simple example for instanciating the Thread
class would be
Thread thread = new Thread(new ParameterizedThreadStart(Work));
or just
Thread thread = new Thread(Work);
The signature of the corresponding method (called Work
in this example) looks like this:
private void Work(object data)
{
...
}
What is left is to start the thread. This is done by using either
public void Start();
or
public void Start(object parameter);
While Start()
would start the thread and pass null
as data to the method, Start(...)
can be used to pass anything into the Work
method of the thread.
There is however one big problem with this approach:
Everything passed into the Work
method is cast into an object. That means within the Work
method it has to be cast to the original type again like in the following example:
public static void Main(string[] args)
{
Thread thread = new Thread(Work);
thread.Start("I've got some text");
Console.ReadLine();
}
private static void Work(object data)
{
string message = (string)data; // Wow, this is ugly
Console.WriteLine($"I, the thread write: {message}");
}
Casting is something you typically do not want to do.
What if someone passes something else which is not a string? As this seems not possible at first (because It is my method, I know what I do or The method is private, how should someone ever be able to pass anything to it?) you may possibly end up with exactly that case for various reasons. As some cases may not be a problem, others are. In such cases you will probably end up with an InvalidCastException
which you probably will not notice because it simply terminates the thread.
As a solution you would expect to get a generic ParameterizedThreadStart
delegate like ParameterizedThreadStart<T>
where T
would be the type of data you want to pass into the Work
method. Unfortunately something like this does not exist (yet?).
There is however a suggested solution to this issue. It involves creating a class which contains both, the data to be passed to the thread as well as the method that represents the worker method like this:
public class ThreadWithState
{
private string message;
public ThreadWithState(string message)
{
this.message = message;
}
public void Work()
{
Console.WriteLine($"I, the thread write: {this.message}");
}
}
With this approach you would start the thread like this:
ThreadWithState tws = new ThreadWithState("I've got some text");
Thread thread = new Thread(tws.Work);
thread.Start();
So in this way you simply avoid casting around and have a typesafe way of providing data to a thread ;-)
IE->Tools->Internet Options
.I use the lattice
package for almost everything I plot in R and it has a corresponing plot to persp
called wireframe
. Let data
be the way Sven defined it.
wireframe(z ~ x * y, data=data)
Or how about this (modification of fig 6.3 in Deepanyan Sarkar's book):
p <- wireframe(z ~ x * y, data=data)
npanel <- c(4, 2)
rotx <- c(-50, -80)
rotz <- seq(30, 300, length = npanel[1]+1)
update(p[rep(1, prod(npanel))], layout = npanel,
panel = function(..., screen) {
panel.wireframe(..., screen = list(z = rotz[current.column()],
x = rotx[current.row()]))
})
Since this post continues to draw attention I want to add the OpenGL way to make 3-d plots too (as suggested by @tucson below). First we need to reformat the dataset 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(rgl)
persp3d(x, y, z, col="skyblue")
This image can be freely rotated and scaled using the mouse, or modified with additional commands, and when you are happy with it you save it using rgl.snapshot
.
rgl.snapshot("myplot.png")
Browse to its page in the package index, eg. http://www.nuget.org/packages/Newtonsoft.Json/4.0.5
Then follow the install instructions given:
Install-Package Newtonsoft.Json -Version 4.0.5
Alternatively to download the .nupkg
file, follow the 'Download' link eg. https://www.nuget.org/api/v2/package/Newtonsoft.Json/4.0.5
Obsolete: install my Chrome extension Nutake which inserts a download link.
1: No difference. It is kept around to allow old S-code to continue to function. This is documented a "Note" in ?Math
2: Yes: But you already know it:
`^`(x,y)
#[1] 1024
In R the mathematical operators are really functions that the parser takes care of rearranging arguments and function names for you to simulate ordinary mathematical infix notation. Also documented at ?Math
.
Edit: Let me add that knowing how R handles infix operators (i.e. two argument functions) is very important in understanding the use of the foundational infix "[[" and "["-functions as (functional) second arguments to lapply
and sapply
:
> sapply( list( list(1,2,3), list(4,3,6) ), "[[", 1)
[1] 1 4
> firsts <- function(lis) sapply(lis, "[[", 1)
> firsts( list( list(1,2,3), list(4,3,6) ) )
[1] 1 4
Check if you have a .git directory in your home folder and if you don't:
mkdir ~/.git
Solved the problem in my case.
You should be pointing it towards the Developer
directory, not the Xcode application bundle. Run this:
sudo xcode-select --switch /Applications/Xcode.app/Contents/Developer
With recent versions of Xcode, you can go to Xcode ? Preferences… ? Locations and pick one of the options for Command Line Tools to set the location.
You can do it with integer division and remainder methods
def get_digit(number, n):
return number // 10**n % 10
get_digit(987654321, 0)
# 1
get_digit(987654321, 5)
# 6
The //
performs integer division by a power of ten to move the digit to the ones position, then the %
gets the remainder after division by 10. Note that the numbering in this scheme uses zero-indexing and starts from the right side of the number.
Its really simple in android we just use handler concept to implement the splash screen
In your SplashScreenActivity java file paste this code.
In your SplashScreenActivity xml file put any picture using imageview.
public void LoadScreen() {
final Handler handler = new Handler();
handler.postDelayed(new Runnable() {
@Override
public void run() {
Intent i = new Intent(SplashScreenActivity.this, AgilanbuGameOptionsActivity.class);
startActivity(i);
}
}, 2000);
}
Maybe this is going a bit too far back but…
Also, I’d like to suggest that multiline text fields have a different type (e.g. “textarea") than single-line fields ("text"), as they really are different types of things, and imply different issues (semantics) for client-side handling.
ieshims.dll
is an artefact of Vista/7 where a shim DLL is used to proxy certain calls (such as CreateProcess
) to handle protected mode IE, which doesn't exist on XP, so it is unnecessary. wer.dll
is related to Windows Error Reporting and again is probably unused on Windows XP which has a slightly different error reporting system than Vista and above.
I would say you shouldn't need either of them to be present on XP and would normally be delay loaded anyway.
If svn add whatever/directory/*
doesn't work, you can do it the tough way:
svn st | grep ^\? | cut -c 2- | xargs svn add
as of august 2020 (works for kali linux as well)
sh -c "$(curl -fsSL https://raw.githubusercontent.com/Linuxbrew/install/master/install.sh)"
export brew=/home/linuxbrew/.linuxbrew/bin
test -d ~/.linuxbrew && eval $(~/.linuxbrew/bin/brew shellenv)
test -d /home/linuxbrew/.linuxbrew && eval $(/home/linuxbrew/.linuxbrew/bin/brew shellenv)
test -r ~/.profile && echo "eval \$($(brew --prefix)/bin/brew shellenv)" >>~/.profile // for ubuntu and debian
After your app status changes to 'Ready for Sale' you will get official mail from Apple. The mail itself states that it might take 24 hours before your App is available on AppStore. If it takes more than days then contact Apple.
Refer below screenshot.
Try the below code it should work
private void checkBox2_CheckedChanged(object sender, EventArgs e)
{
if (checkBox2.Checked == false)
{
foreach (DataGridViewRow row in dGV1.Rows)
{
DataGridViewCheckBoxCell chk = (DataGridViewCheckBoxCell)row.Cells[0];
chk.Value = chk.TrueValue;
}
}
else if (checkBox2.Checked == true)
{
foreach (DataGridViewRow row in dGV1.Rows)
{
DataGridViewCheckBoxCell chk = (DataGridViewCheckBoxCell)row.Cells[0];
chk.Value = 1;
if (row.IsNewRow)
{
chk.Value = 0;
}
}
}
}
It won't be caught by the second catch block. Each Exception is caught only when inside a try block. You can nest tries though (not that it's a good idea generally):
try {
doSomething();
} catch (IOException) {
try {
doSomething();
} catch (IOException e) {
throw new ApplicationException("Failed twice at doSomething" +
e.toString());
}
} catch (Exception e) {
}
First up, going by the function name xssRequest it sounds like you're trying cross site request - which if that's right, you're not going to be able to read the contents of the iframe.
On the other hand, if the iframe's URL is on your domain you can access the body, but I've found that if I use a timeout to remove the iframe the callback works fine:
// possibly excessive use of jQuery - but I've got a live working example in production
$('#myUniqueID').load(function () {
if (typeof callback == 'function') {
callback($('body', this.contentWindow.document).html());
}
setTimeout(function () {$('#frameId').remove();}, 50);
});
I removed old AppleWWDRCA, downloaded and installed AppleWWDRCA, but problem remained. I also, checked my distribution and development certificates from Keychain Access, and see below error;
"This certificate has an invalid issuer."
Then,
This fixed certificate problem.
Since old certificates revoked, existing provisioning profiles become invalid. To fix this;
I hope this helps.
This is nothing to do with hardware nor software. Simply that RGB are the 3 primary colours which can be combined in various ways to produce every other colour. It is more about the human convention/perception of colours which carried over.
You may find this article interesting.
From the documentation
To create your own link with a pre-filled message that will automatically appear in the text field of a chat, use https://wa.me/whatsappphonenumber/?text=urlencodedtext where whatsappphonenumber is a full phone number in international format and URL-encodedtext is the URL-encoded pre-filled message.
Example:https://wa.me/15551234567?text=I'm%20interested%20in%20your%20car%20for%20sale
val phoneNumber = "13492838472"
val text = "Hey, you know... I love StackOverflow :)"
val uri = Uri.parse("https://wa.me/$phoneNumber/?text=$text")
val sendIntent = Intent(Intent.ACTION_VIEW, uri)
startActivity(sendIntent)
Just try this:
DF %>% t %>% na.omit %>% t
It transposes the data frame and omits null rows which were 'columns' before transposition and then you transpose it back.
You can use Object.getOwnPropertyNames()
to get all properties that belong to an object, whether enumerable or not. For example:
console.log(Object.getOwnPropertyNames(Math));
//-> ["E", "LN10", "LN2", "LOG2E", "LOG10E", "PI", ...etc ]
You can then use filter()
to obtain only the methods:
console.log(Object.getOwnPropertyNames(Math).filter(function (p) {
return typeof Math[p] === 'function';
}));
//-> ["random", "abs", "acos", "asin", "atan", "ceil", "cos", "exp", ...etc ]
In ES3 browsers (IE 8 and lower), the properties of built-in objects aren't enumerable. Objects like window
and document
aren't built-in, they're defined by the browser and most likely enumerable by design.
From ECMA-262 Edition 3:
Global Object
There is a unique global object (15.1), which is created before control enters any execution context. Initially the global object has the following properties:• Built-in objects such as Math, String, Date, parseInt, etc. These have attributes { DontEnum }.
• Additional host defined properties. This may include a property whose value is the global object itself; for example, in the HTML document object model the window property of the global object is the global object itself.As control enters execution contexts, and as ECMAScript code is executed, additional properties may be added to the global object and the initial properties may be changed.
I should point out that this means those objects aren't enumerable properties of the Global object. If you look through the rest of the specification document, you will see most of the built-in properties and methods of these objects have the { DontEnum }
attribute set on them.
Update: a fellow SO user, CMS, brought an IE bug regarding { DontEnum }
to my attention.
Instead of checking the DontEnum attribute, [Microsoft] JScript will skip over any property in any object where there is a same-named property in the object's prototype chain that has the attribute DontEnum.
In short, beware when naming your object properties. If there is a built-in prototype property or method with the same name then IE will skip over it when using a for...in
loop.
Slightly off topic, but for those of you that want to modify the built-in colors of the Dark/Light themes you can use this little tool I wrote for Visual Studio 2012.
More info here:
Another option is replacing double quotes with single quotes if you don't mind whatever it is. But I don't mention this one:
<option value='"asd'>test</option>
I mention this one:
<option value="'asd">test</option>
In my case I used this solution.
git reset --hard <tag/branch/commit id>
Notes:
git reset
without the --hard
option resets the commit history, but not the files. With the --hard
option the files in working tree are also reset. (credited user)
If you wish to commit that state so that the remote repository also points to the rolled back commit do: git push <reponame> -f
(credited user)
Your makefile should ideally be named makefile
, not make
. Note that you can call your makefile anything you like, but as you found, you then need the -f
option with make
to specify the name of the makefile. Using the default name of makefile
just makes life easier.
UPDATE: Somebody just won't take no as the answer, and I like it, very much, especially to this particular question.
GOOD NEWS, There is a way now --
The solution is Rocker: https://github.com/grammarly/rocker
John Yani said, "IMO, it solves all the weak points of Dockerfile, making it suitable for development."
https://github.com/grammarly/rocker
By introducing new commands, Rocker aims to solve the following use cases, which are painful with plain Docker:
- Mount reusable volumes on build stage, so dependency management tools may use cache between builds.
- Share ssh keys with build (for pulling private repos, etc.), while not leaving them in the resulting image.
- Build and run application in different images, be able to easily pass an artifact from one image to another, ideally have this logic in a single Dockerfile.
- Tag/Push images right from Dockerfiles.
- Pass variables from shell build command so they can be substituted to a Dockerfile.
And more. These are the most critical issues that were blocking our adoption of Docker at Grammarly.
As of early 2018, the container ecosystem is much more mature than it was three years ago when this project was initiated. Now, some of the critical and outstanding features of rocker can be easily covered by docker build or other well-supported tools, though some features do remain unique to rocker. See https://github.com/grammarly/rocker/issues/199 for more details.
Here is one equivalent of the accepted answer for the UTF-8 world.
if (!preg_match('/^[\p{L}\p{N}_-]+$/u', $string)){
//Disallowed Character In $string
}
Explanation:
Note, that if the hyphen is the last character in the class definition it does not need to be escaped. If the dash appears elsewhere in the class definition it needs to be escaped, as it will be seen as a range character rather then a hyphen.
this jquery imageLoader plugin is just 1.39kb
usage:
$({}).imageLoader({
images: [src1,src2,src3...],
allcomplete:function(e,ui){
//images are ready here
//your code - site.fadeIn() or something like that
}
});
there are also other options like whether you want to load the images synchronously or asychronously and a complete event for each individual image.
Install git on your PC and setup configuration values in either Command Prompt (cmd) or VS Code terminal (Ctrl + `
)
git config --global user.name "Your Name"
git config --global user.email [email protected]
Setup editor
Windows eg.:
git config --global core.editor "'C:/Program Files/Notepad++/notepad++.exe' -multiInst -nosession"
Linux / Mac eg.:
git config --global core.editor vim
Check git settings which displays configuration details
git config --list
Login to github and create a remote repository. Copy the URL of this repository
Navigate to your project directory and execute the below commands
git init // start tracking current directory
git add -A // add all files in current directory to staging area, making them available for commit
git commit -m "commit message" // commit your changes
git remote add origin https://github.com/username/repo-name.git // add remote repository URL which contains the required details
git pull origin master // always pull from remote before pushing
git push -u origin master // publish changes to your remote repository
warning! this does not work with links.
var variable = 'variable', another = 'another';
['I would', 'like to'].join(' ') + ' a js ' + variable + ' together with ' + another + ' to create ' + [another, ...[variable].concat('name')].join(' ').concat('...');
Try remove scrollChildLayout from its parent view first?
scrollview.removeView(scrollChildLayout)
Or remove all the child from the parent view, and add them again.
scrollview.removeAllViews()
The file is truncated, so you can call read()
(no exceptions raised, unlike when opened using 'w') but you'll get an empty string.
The previous answers are all correct. I go one step further and make C# work for me by defining an extension method on String:
public static class Extensions
{
public static string[] Split(this string toSplit, string splitOn) {
return toSplit.Split(new string[] { splitOn }, StringSplitOptions.None);
}
}
That way I can call it on any string in the simple way I naively expected the first time I tried to accomplish this:
"a big long string with stuff to split on".Split("g str");
You can simply append string like:
var worldArg = "world is good"
worldArg += " to live";
ok, this is a extract from the make function in hash.php
$work = str_pad(8, 2, '0', STR_PAD_LEFT);
// Bcrypt expects the salt to be 22 base64 encoded characters including
// dots and slashes. We will get rid of the plus signs included in the
// base64 data and replace them with dots.
if (function_exists('openssl_random_pseudo_bytes'))
{
$salt = openssl_random_pseudo_bytes(16);
}
else
{
$salt = Str::random(40);
}
$salt = substr(strtr(base64_encode($salt), '+', '.'), 0 , 22);
echo crypt('yourpassword', '$2a$'.$work.'$'.$salt);
Just copy/paste it into a php file and run it.
I also stuck on this issue. But I solved simply by defining the foreign key as unsigned integer
.
Find the below example-
CREATE TABLE parent (
id int(10) UNSIGNED NOT NULL,
PRIMARY KEY (id)
) ENGINE=INNODB;
CREATE TABLE child (
id int(10) UNSIGNED NOT NULL,
parent_id int(10) UNSIGNED DEFAULT NULL,
FOREIGN KEY (parent_id) REFERENCES parent(id) ON DELETE CASCADE
) ENGINE=INNODB;
Try this..Add this in your page
<style>
textarea
{
width:100%;
}
</style>
Why not use SecureRandom?
require 'securerandom'
random_string = SecureRandom.hex
# outputs: 5b5cd0da3121fc53b4bc84d0c8af2e81 (i.e. 32 chars of 0..9, a..f)
SecureRandom also has methods for:
see: http://ruby-doc.org/stdlib-1.9.2/libdoc/securerandom/rdoc/SecureRandom.html
You can actualy fake the transparency of option
DOMElements with the following CSS:
option {
/* Whatever color you want */
background-color: #82caff;
}
The option
tag does not support rgba
colors yet.
You can try also like this:
- (void) touchesBegan: (NSSet *) touches withEvent: (UIEvent *) event {
for (id textField in self.view.subviews) {
if ([textField isKindOfClass:[UITextField class]] && [textField isFirstResponder]) {
[textField resignFirstResponder];
}
}
}
I didn't try it but it seems a good solution
You can do this even shorter by replacing echo
with <?= code ?>
<?=(empty($storeData['street2'])) ? 'Yes <br />' : 'No <br />'?>
This is useful especially when you want to determine, inside a navbar, whether the menu option should be displayed as already visited (clicked) or not:
<li<?=($basename=='index.php' ? ' class="active"' : '')?>><a href="index.php">Home</a></li>
suppose below is the html paragraph tag:
<p style="background-color:#ff0000">This is a paragraph.</p>
and we want to change the paragraph color in jquery.
The client side code will be:
<script>
$(document).ready(function(){
$("p").css("background-color", "yellow");
});
</script>
No, your algorithm works but your Write
operation is misplaced within the outer loop.
int[] arr = { 800, 11, 50, 771, 649, 770, 240, 9 };
int temp = 0;
for (int write = 0; write < arr.Length; write++) {
for (int sort = 0; sort < arr.Length - 1; sort++) {
if (arr[sort] > arr[sort + 1]) {
temp = arr[sort + 1];
arr[sort + 1] = arr[sort];
arr[sort] = temp;
}
}
}
for (int i = 0; i < arr.Length; i++)
Console.Write(arr[i] + " ");
Console.ReadKey();
If you want to use this in VBA:
For i = 1 To X
UserForm1.Controls("Label" & i).Caption = MySheet.Cells(i + 1, i).Value
Next
It's working to me.
I use Asp.net core 2.2
(this way supported in asp.net core 2.1
and upper version).
add Kestrel
section in appsettings.json
file.
like this:
{
"Kestrel": {
"EndPoints": {
"Http": {
"Url": "http://localhost:4300"
}
}
},
"Logging": {
"LogLevel": {
"Default": "Warning"
}
},
"AllowedHosts": "*"
}
and in Startup.cs
:
public Startup(IConfiguration configuration, IHostingEnvironment env)
{
var builder = new ConfigurationBuilder()
.SetBasePath(env.ContentRootPath)
.AddJsonFile("appsettings.json", optional: false, reloadOnChange: true)
.AddEnvironmentVariables();
Configuration = builder.Build();
}
If you're registering a domain and the termination (ex .com
) it is not IDN, as Aaron Hathaway said:
Hostnames are composed of series of labels concatenated with dots, as are all domain names. For example, en.wikipedia.org
is a hostname. Each label must be between 1 and 63 characters long, and the entire hostname (including the delimiting dots but not a trailing dot) has a maximum of 253 ASCII characters.
The Internet standards (Requests for Comments) for protocols mandate that component hostname labels may contain only the ASCII letters a
through z
(in a case-insensitive manner), the digits 0
through 9
, and the hyphen -
. The original specification of hostnames in RFC 952, mandated that labels could not start with a digit or with a hyphen, and must not end with a hyphen. However, a subsequent specification (RFC 1123) permitted hostname labels to start with digits. No other symbols, punctuation characters, or white space are permitted.
Later, Spain with it's .es
, .com.es
, .org.es
, .nom,es
, .gob.es
and .edu.es
introduced IDN tlds, if your tld is one of .es
or any other that supports it, any character can be used, but you can't combine alphabets like Latin, Greek or Cyril in one hostname, and that it respects the things that can't go at the start or at the end.
If you're using non-registered tlds, just for local networking, like with local DNS or with hosts files, you can treat them all as IDN.
Keep in mind some programs could not work well, especially old, outdated and unpopular ones.
For Retrofit 2.0.0-beta1
or beta2
, the code goes as follows:
OkHttpClient client = new OkHttpClient();
client.setConnectTimeout(30, TimeUnit.SECONDS);
client.setReadTimeout(30, TimeUnit.SECONDS);
client.setWriteTimeout(30, TimeUnit.SECONDS);
Retrofit retrofit = new Retrofit.Builder()
.baseUrl("http://api.yourapp.com/")
.addConverterFactory(GsonConverterFactory.create())
.client(client)
.build();
Use insert
:
In [1]: ls = [1,2,3]
In [2]: ls.insert(0, "new")
In [3]: ls
Out[3]: ['new', 1, 2, 3]
A more explicit option is to project collection to an IEnumerable of KeyValuePair
and then convert it to a Dictionary.
Dictionary<int, string> dictionary = objects
.Select(x=> new KeyValuePair<int, string>(x.Id, x.Name))
.ToDictionary(x=>x.Key, x=>x.Value);
To add to @mrry's post, I put together a tutorial that explains how to load a TensorFlow graph with the C++ API. It's very minimal and should help you understand how all of the pieces fit together. Here's the meat of it:
Requirements:
Folder structure:
tensorflow/tensorflow/|project name|/
tensorflow/tensorflow/|project name|/|project name|.cc (e.g. https://gist.github.com/jimfleming/4202e529042c401b17b7)
tensorflow/tensorflow/|project name|/BUILD
BUILD:
cc_binary(
name = "<project name>",
srcs = ["<project name>.cc"],
deps = [
"//tensorflow/core:tensorflow",
]
)
Two caveats for which there are probably workarounds:
https://medium.com/@jimfleming/loading-a-tensorflow-graph-with-the-c-api-4caaff88463f
You need to detect the click from js side, your HTML remaining same. Note: this method is deprecated since v3.5.5 and removed in v4.
$("button").click(function() {
var $btn = $(this);
$btn.button('loading');
// simulating a timeout
setTimeout(function () {
$btn.button('reset');
}, 1000);
});
Also, don't forget to load jQuery and Bootstrap js (based on jQuery) file in your page.
Displaying left middle and right of there parents. If you have more then 3 elements then use nth-child() for them.
HTML sample:
<body>
<ul class="nav-tabs">
<li><a id="btn-tab-business" class="btn-tab nav-tab-selected" onclick="openTab('business','btn-tab-business')"><i class="fas fa-th"></i>Business</a></li>
<li><a id="btn-tab-expertise" class="btn-tab" onclick="openTab('expertise', 'btn-tab-expertise')"><i class="fas fa-th"></i>Expertise</a></li>
<li><a id="btn-tab-quality" class="btn-tab" onclick="openTab('quality', 'btn-tab-quality')"><i class="fas fa-th"></i>Quality</a></li>
</ul>
</body>
CSS sample:
.nav-tabs{
position: relative;
padding-bottom: 50px;
}
.nav-tabs li {
display: inline-block;
position: absolute;
list-style: none;
}
.nav-tabs li:first-child{
top: 0px;
left: 0px;
}
.nav-tabs li:last-child{
top: 0px;
right: 0px;
}
.nav-tabs li:nth-child(2){
top: 0px;
left: 50%;
transform: translate(-50%, 0%);
}
Hint: On AWS RDS you need a new Parameter Group for your MySQL DB with the params (instead of editing a my.cnf)
Note: character_set_system stays "utf8"
These SQL commands do NOT WORK PERMANENTLY - only in a session:
set character_set_server = utf8mb4;
set collation_server = utf8mb4_unicode_ci;
In this case, you might get some differences. Consider a line like:
"foo\tbar "
In this case, if you strip
, then you'll get {"foo":"bar"}
as the dictionary entry. If you don't strip, you'll get {"foo":"bar "}
(note the extra space at the end)
Note that if you use line.split()
instead of line.split('\t')
, you'll split on every whitespace character and the "strip
ing" will be done during splitting automatically. In other words:
line.strip().split()
is always identical to:
line.split()
but:
line.strip().split(delimiter)
Is not necessarily equivalent to:
line.split(delimiter)
if you are using spring security then you can get the current logged in user by
Authentication auth = SecurityContextHolder.getContext().getAuthentication();
String name = auth.getName(); //get logged in username
As gratitude to the timely help I got from here - a minor update to above.
$query = "UPDATE `db`.`table` SET `fieldname`= str_to_date( fieldname, '%d/%m/%Y')";
Click on Camera icon that is there on the right to emulator in action icons list. This is available on latest studio, though I am not sure from which version.
DataFrame.reset_index
is what you're looking for. If you don't want it saved as a column, then do:
df = df.reset_index(drop=True)
If you don't want to reassign:
df.reset_index(drop=True, inplace=True)
Try something like this - it works for the cases you have mentioned.
select * from tbl
where answer like '%[0-9]%'
and answer not like '%[:]%'
and answer not like '%[A-Z]%'
I had the same problem and found out that I had forgotten to include the script in the file which I want to include in the live site.
Also, you should try this:
bundles.Add(new ScriptBundle("~/bundles/jquery").Include(
"~/Scripts/jquery-{version}.js"));
(See answer below for a Angular 1.3 solution.)
The issue here is that the search will execute every time the model changes, which is every keyup action on an input.
There would be cleaner ways to do this, but probably the easiest way would be to switch the binding so that you have a $scope property defined inside your Controller on which your filter operates. That way you can control how frequently that $scope variable is updated. Something like this:
JS:
var App = angular.module('App', []);
App.controller('DisplayController', function($scope, $http, $timeout) {
$http.get('data.json').then(function(result){
$scope.entries = result.data;
});
// This is what you will bind the filter to
$scope.filterText = '';
// Instantiate these variables outside the watch
var tempFilterText = '',
filterTextTimeout;
$scope.$watch('searchText', function (val) {
if (filterTextTimeout) $timeout.cancel(filterTextTimeout);
tempFilterText = val;
filterTextTimeout = $timeout(function() {
$scope.filterText = tempFilterText;
}, 250); // delay 250 ms
})
});
HTML:
<input id="searchText" type="search" placeholder="live search..." ng-model="searchText" />
<div class="entry" ng-repeat="entry in entries | filter:filterText">
<span>{{entry.content}}</span>
</div>
There is a drawback of shared pointer: shared_pointer can't handle the parent-child cycle dependency. Means if the parent class uses the object of child class using a shared pointer, in the same file if child class uses the object of the parent class. The shared pointer will be failed to destruct all objects, even shared pointer is not at all calling the destructor in cycle dependency scenario. basically shared pointer doesn't support the reference count mechanism.
This drawback we can overcome using weak_pointer.
Use Awk.
awk '{ print length }' abc.txt
I am really OCD about maintaining strict column limits, and not a fan of "\" line continuation because you can't put a comment after it, so here is my method.
//|¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯|//
#ifdef CONDITION_01 //| |//
#define TEMP_MACRO //| |//
#endif //| |//
#ifdef CONDITION_02 //| |//
#define TEMP_MACRO //| |//
#endif //| |//
#ifdef CONDITION_03 //| |//
#define TEMP_MACRO //| |//
#endif //| |//
#ifdef TEMP_MACRO //| |//
//|- -- -- -- -- -- -- -- -- -- -|//
printf("[IF_CONDITION:(1|2|3)]\n");
//|- -- -- -- -- -- -- -- -- -- -|//
#endif //| |//
#undef TEMP_MACRO //| |//
//|________________________________________|//
In this case, if you really want to use ReadToEnd
method in MemoryStream
in an easy way, you can use this Extension Method to achieve this:
public static class SetExtensions
{
public static string ReadToEnd(this MemoryStream BASE)
{
BASE.Position = 0;
StreamReader R = new StreamReader(BASE);
return R.ReadToEnd();
}
}
And you can use this method in this way:
using (MemoryStream m = new MemoryStream())
{
//for example i want to serialize an object into MemoryStream
//I want to use XmlSeralizer
XmlSerializer xs = new XmlSerializer(_yourVariable.GetType());
xs.Serialize(m, _yourVariable);
//the easy way to use ReadToEnd method in MemoryStream
MessageBox.Show(m.ReadToEnd());
}
A .pl is a single script.
In .pm (Perl Module) you have functions that you can use from other Perl scripts:
A Perl module is a self-contained piece of Perl code that can be used by a Perl program or by other Perl modules. It is conceptually similar to a C link library, or a C++ class.
I was trying to use CURL to do some https API calls with php and ran into this problem. I noticed a recommendation on the php site which got me up and running: http://php.net/manual/en/function.curl-setopt.php#110457
Please everyone, stop setting CURLOPT_SSL_VERIFYPEER to false or 0. If your PHP installation doesn't have an up-to-date CA root certificate bundle, download the one at the curl website and save it on your server:
http://curl.haxx.se/docs/caextract.html
Then set a path to it in your php.ini file, e.g. on Windows:
curl.cainfo=c:\php\cacert.pem
Turning off CURLOPT_SSL_VERIFYPEER allows man in the middle (MITM) attacks, which you don't want!
Add OnClientClick="return false;"
,
<asp:button ID="btninsert" runat="server" text="Button" OnClientClick="return false;" />
or in the CodeBehind:
btninsert.Attributes.Add("onclick", "return false;");
The advantages are that you can use functions like LEN
and LEFT
on nvarchar(max)
and you cannot do that against ntext
and text
. It is also easier to work with nvarchar(max)
than text
where you had to use WRITETEXT
and UPDATETEXT
.
Also, text
, ntext
, etc., are being deprecated (http://msdn.microsoft.com/en-us/library/ms187993.aspx)
I've changed my code like this and it works:
CREATE or REPLACE TRIGGER test001
AFTER INSERT OR UPDATE OR DELETE ON tabletest001
REFERENCING OLD AS old_buffer NEW AS new_buffer
FOR EACH ROW WHEN (new_buffer.field1 = 'HBP00' OR old_buffer.field1 = 'HBP00')
DECLARE
Operation NUMBER;
CustomerCode CHAR(10 BYTE);
BEGIN
IF DELETING THEN
Operation := 3;
CustomerCode := :old_buffer.field1;
END IF;
IF INSERTING THEN
Operation := 1;
CustomerCode := :new_buffer.field1;
END IF;
IF UPDATING THEN
Operation := 2;
CustomerCode := :new_buffer.field1;
END IF;
// DO SOMETHING ...
EXCEPTION
WHEN OTHERS THEN ErrorCode := SQLCODE;
END;
void p(String l){
System.out.println(l);
}
Shortest. Go for it.
app[func].apply(this, args);
As mentioned before: By default Ansible will attempt to run on all hosts in parallel, but task after Task(serial).
If you also want to run Tasks in parallel you have to start different instances of ansible. Here are some ways to to it.
If you already have different groups you can run one ansible instance for each group:
shell-1 #> ansible-playbook site.yml --limit webservers
shell-2 #> ansible-playbook site.yml --limit dbservers
shell-3 #> ansible-playbook site.yml --limit load_balancers
If your playbooks work standalone you can although do this:
shell-1 #> ansible-playbook load_balancers.yml
shell-2 #> ansible-playbook webservers.yml
shell-3 #> ansible-playbook dbservers.yml
If not, you can let ansible do the fragmentation. When you have 6 hosts and want to run 3 instances with 2 host each, you can do something like this:
shell-1 #> ansible-playbook site.yml --limit all[0-2]
shell-2 #> ansible-playbook site.yml --limit all[2-4]
shell-3 #> ansible-playbook site.yml --limit all[4-6]
Of course you can use one shell and put the tasks in background, an simple example would be:
shell-1 #> ansible-playbook site.yml --limit all[0-2] &
shell-1 #> ansible-playbook site.yml --limit all[2-4] &
shell-1 #> ansible-playbook site.yml --limit all[4-6] &
With this method you get all output mixed together in one terminal. To avoid this you can write the output to different files.
ansible-playbook site.yml --limit all[0-2] > log1 &
ansible-playbook site.yml --limit all[2-4] > log2 &
ansible-playbook site.yml --limit all[4-6] > log3 &
Maybe it's better to use a tool like tmux / screen to start the instances in virtual shells.
Or have a look at the "fireball mode": http://jpmens.net/2012/10/01/dramatically-speeding-up-ansible-runs/
If you want to know more about limits, look here: https://docs.ansible.com/playbooks_best_practices.html#what-this-organization-enables-examples
You can try:
colour = ["red", "red", "green", "yellow"]
with open('mypage.html', 'w') as myFile:
myFile.write('<html>')
myFile.write('<body>')
myFile.write('<table>')
s = '1234567890'
for i in range(0, len(s), 60):
myFile.write('<tr><td>%04d</td>' % (i+1));
for j, k in enumerate(s[i:i+60]):
myFile.write('<td><font style="background-color:%s;">%s<font></td>' % (colour[j %len(colour)], k));
myFile.write('</tr>')
myFile.write('</table>')
myFile.write('</body>')
myFile.write('</html>')
Actually, using the converter like that breaks two-way binding, plus as I said above, you can't use that with enumerations either. The better way to do this is with a simple style against a ListBox, like this:
Note: Contrary to what DrWPF.com stated in their example, do not put the ContentPresenter inside the RadioButton or else if you add an item with content such as a button or something else, you will not be able to set focus or interact with it. This technique solves that. Also, you need to handle the graying of the text as well as removing of margins on labels or else it will not render correctly. This style handles both for you as well.
<Style x:Key="RadioButtonListItem" TargetType="{x:Type ListBoxItem}" >
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ListBoxItem">
<DockPanel LastChildFill="True" Background="{TemplateBinding Background}" HorizontalAlignment="Stretch" VerticalAlignment="Center" >
<RadioButton IsChecked="{TemplateBinding IsSelected}" Focusable="False" IsHitTestVisible="False" VerticalAlignment="Center" Margin="0,0,4,0" />
<ContentPresenter
Content = "{TemplateBinding ContentControl.Content}"
ContentTemplate = "{TemplateBinding ContentControl.ContentTemplate}"
ContentStringFormat = "{TemplateBinding ContentControl.ContentStringFormat}"
HorizontalAlignment = "{TemplateBinding Control.HorizontalContentAlignment}"
VerticalAlignment = "{TemplateBinding Control.VerticalContentAlignment}"
SnapsToDevicePixels = "{TemplateBinding UIElement.SnapsToDevicePixels}" />
</DockPanel>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="RadioButtonList" TargetType="ListBox">
<Style.Resources>
<Style TargetType="Label">
<Setter Property="Padding" Value="0" />
</Style>
</Style.Resources>
<Setter Property="BorderThickness" Value="0" />
<Setter Property="Background" Value="Transparent" />
<Setter Property="ItemContainerStyle" Value="{StaticResource RadioButtonListItem}" />
<Setter Property="Control.Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ListBox}">
<ItemsPresenter SnapsToDevicePixels="{TemplateBinding UIElement.SnapsToDevicePixels}" />
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
<Trigger Property="IsEnabled" Value="False">
<Setter Property="TextBlock.Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}" />
</Trigger>
</Style.Triggers>
</Style>
<Style x:Key="HorizontalRadioButtonList" BasedOn="{StaticResource RadioButtonList}" TargetType="ListBox">
<Setter Property="ItemsPanel">
<Setter.Value>
<ItemsPanelTemplate>
<VirtualizingStackPanel Background="Transparent" Orientation="Horizontal" />
</ItemsPanelTemplate>
</Setter.Value>
</Setter>
</Style>
You now have the look and feel of radio buttons, but you can do two-way binding, and you can use an enumeration. Here's how...
<ListBox Style="{StaticResource RadioButtonList}"
SelectedValue="{Binding SomeVal}"
SelectedValuePath="Tag">
<ListBoxItem Tag="{x:Static l:MyEnum.SomeOption}" >Some option</ListBoxItem>
<ListBoxItem Tag="{x:Static l:MyEnum.SomeOtherOption}">Some other option</ListBoxItem>
<ListBoxItem Tag="{x:Static l:MyEnum.YetAnother}" >Yet another option</ListBoxItem>
</ListBox>
Also, since we explicitly separated out the style that tragets the ListBoxItem rather than putting it inline, again as the other examples have shown, you can now create a new style off of it to customize things on a per-item basis such as spacing. (This will not work if you simply try to target ListBoxItem as the keyed style overrides generic control targets.)
Here's an example of putting a margin of 6 above and below each item. (Note how you have to explicitly apply the style via the ItemContainerStyle property and not simply targeting ListBoxItem in the ListBox's resource section for the reason stated above.)
<Window.Resources>
<Style x:Key="SpacedRadioButtonListItem" TargetType="ListBoxItem" BasedOn="{StaticResource RadioButtonListItem}">
<Setter Property="Margin" Value="0,6" />
</Style>
</Window.Resources>
<ListBox Style="{StaticResource RadioButtonList}"
ItemContainerStyle="{StaticResource SpacedRadioButtonListItem}"
SelectedValue="{Binding SomeVal}"
SelectedValuePath="Tag">
<ListBoxItem Tag="{x:Static l:MyEnum.SomeOption}" >Some option</ListBoxItem>
<ListBoxItem Tag="{x:Static l:MyEnum.SomeOtherOption}">Some other option</ListBoxItem>
<ListBoxItem Tag="{x:Static l:MyEnum.YetAnother}" >Ter another option</ListBoxItem>
</ListBox>