PDO error message?
From the manual:
If the database server successfully prepares the statement, PDO::prepare() returns a PDOStatement object. If the database server cannot successfully prepare the statement, PDO::prepare() returns FALSE or emits PDOException (depending on error handling).
The prepare statement likely caused an error because the db would be unable to prepare the statement. Try testing for an error immediately after you prepare your query and before you execute it.
$qry = '
INSERT INTO non-existant-table (id, score)
SELECT id, 40
FROM another-non-existant-table
WHERE description LIKE "%:search_string%"
AND available = "yes"
ON DUPLICATE KEY UPDATE score = score + 40
';
$sth = $this->pdo->prepare($qry);
print_r($this->pdo->errorInfo());
SqlException: DB2 SQL error: SQLCODE: -302, SQLSTATE: 22001, SQLERRMC: null
You can find the codes in the DB2 Information Center. Here's a definition of the -302 from the z/OS Information Center:
THE VALUE OF INPUT VARIABLE OR PARAMETER NUMBER position-number IS INVALID OR TOO LARGE FOR THE TARGET COLUMN OR THE TARGET VALUE
On Linux/Unix/Windows DB2, you'll look under SQL Messages to find your error message. If the code is positive, you'll look for SQLxxxxW, if it's negative, you'll look for SQLxxxxN, where xxxx is the code you're looking up.
Merge two (or more) lists into one, in C# .NET
In the special case: "All elements of List1 goes to a new List2": (e.g. a string list)
List<string> list2 = new List<string>(list1);
In this case, list2 is generated with all elements from list1.
spring autowiring with unique beans: Spring expected single matching bean but found 2
If I'm not mistaken, the default bean name of a bean declared with @Component is the name of its class its first letter in lower-case. This means that
@Component
public class SuggestionService {
declares a bean of type SuggestionService, and of name suggestionService. It's equivalent to
@Component("suggestionService")
public class SuggestionService {
or to
<bean id="suggestionService" .../>
You're redefining another bean of the same type, but with a different name, in the XML:
<bean id="SuggestionService" class="com.hp.it.km.search.web.suggestion.SuggestionService">
...
</bean>
So, either specify the name of the bean in the annotation to be SuggestionService, or use the ID suggestionService in the XML (don't forget to also modify the <ref> element, or to remove it, since it isn't needed). In this case, the XML definition will override the annotation definition.
Upload DOC or PDF using PHP
For application/msword and application/vnd.ms-excel, when I deleted the size restriction:
($_FILES["file"]["size"] < 20000)
...it worked ok.
Android failed to load JS bundle
Ok, I think I've figured what the issue is here. It was to do with the version of watchman I was running.
In a new shell, run brew update
then: brew unlink watchman
then: brew install watchman
now, you can run react-native start from your project folder
I leave this shell open, create a new shell window and run: react-native run-android from my project folder. All is right with the world.
ps. I was originally on version 3.2 of watchman. This upgraded me to 3.7.
pps. I'm new to this so that might not be the swiftest route to the solution but it has worked for me.
* MORE INFO FOR RUNNING/DEBUGGING ON A DEVICE *
You might find that if you deploy your app to your Android device rather than an emulater you get a red screen of death with an error saying Unable to load JS Bundle. You need to set the debug server for your device to be your computer running react...either its name OR IP address.
- Press the device
Menubutton - Select
Dev Settings - Select
Debug server host for deviceorChange Bundle Location - Type in your machine's IP and Reload JS plus the react port e.g.
192.168.1.10:8081
More info: http://facebook.github.io/react-native/docs/running-on-device-android.html
how to remove the dotted line around the clicked a element in html
In my case it was a button, and apparently, with buttons, this is only a problem in Firefox. Solution found here:
button::-moz-focus-inner {
border: 0;
}
Creating a simple login form
<html>
<head>
<meta charset="utf-8">
<title>Best Login Page design in html and css</title>
<style type="text/css">
body {
background-color: #f4f4f4;
color: #5a5656;
font-family: 'Open Sans', Arial, Helvetica, sans-serif;
font-size: 16px;
line-height: 1.5em;
}
a { text-decoration: none; }
h1 { font-size: 1em; }
h1, p {
margin-bottom: 10px;
}
strong {
font-weight: bold;
}
.uppercase { text-transform: uppercase; }
/* ---------- LOGIN ---------- */
#login {
margin: 50px auto;
width: 300px;
}
form fieldset input[type="text"], input[type="password"] {
background-color: #e5e5e5;
border: none;
border-radius: 3px;
-moz-border-radius: 3px;
-webkit-border-radius: 3px;
color: #5a5656;
font-family: 'Open Sans', Arial, Helvetica, sans-serif;
font-size: 14px;
height: 50px;
outline: none;
padding: 0px 10px;
width: 280px;
-webkit-appearance:none;
}
form fieldset input[type="submit"] {
background-color: #008dde;
border: none;
border-radius: 3px;
-moz-border-radius: 3px;
-webkit-border-radius: 3px;
color: #f4f4f4;
cursor: pointer;
font-family: 'Open Sans', Arial, Helvetica, sans-serif;
height: 50px;
text-transform: uppercase;
width: 300px;
-webkit-appearance:none;
}
form fieldset a {
color: #5a5656;
font-size: 10px;
}
form fieldset a:hover { text-decoration: underline; }
.btn-round {
background-color: #5a5656;
border-radius: 50%;
-moz-border-radius: 50%;
-webkit-border-radius: 50%;
color: #f4f4f4;
display: block;
font-size: 12px;
height: 50px;
line-height: 50px;
margin: 30px 125px;
text-align: center;
text-transform: uppercase;
width: 50px;
}
.facebook-before {
background-color: #0064ab;
border-radius: 3px 0px 0px 3px;
-moz-border-radius: 3px 0px 0px 3px;
-webkit-border-radius: 3px 0px 0px 3px;
color: #f4f4f4;
display: block;
float: left;
height: 50px;
line-height: 50px;
text-align: center;
width: 50px;
}
.facebook {
background-color: #0079ce;
border: none;
border-radius: 0px 3px 3px 0px;
-moz-border-radius: 0px 3px 3px 0px;
-webkit-border-radius: 0px 3px 3px 0px;
color: #f4f4f4;
cursor: pointer;
height: 50px;
text-transform: uppercase;
width: 250px;
}
.twitter-before {
background-color: #189bcb;
border-radius: 3px 0px 0px 3px;
-moz-border-radius: 3px 0px 0px 3px;
-webkit-border-radius: 3px 0px 0px 3px;
color: #f4f4f4;
display: block;
float: left;
height: 50px;
line-height: 50px;
text-align: center;
width: 50px;
}
.twitter {
background-color: #1bb2e9;
border: none;
border-radius: 0px 3px 3px 0px;
-moz-border-radius: 0px 3px 3px 0px;
-webkit-border-radius: 0px 3px 3px 0px;
color: #f4f4f4;
cursor: pointer;
height: 50px;
text-transform: uppercase;
width: 250px;
}
</style>
</head>
<body>
<div id="login">
<h1><strong>Welcome.</strong> Please login.</h1>
<form action="javascript:void(0);" method="get">
<fieldset>
<p><input type="text" required value="Username" onBlur="if(this.value=='')this.value='Username'" onFocus="if(this.value=='Username')this.value='' "></p>
<p><input type="password" required value="Password" onBlur="if(this.value=='')this.value='Password'" onFocus="if(this.value=='Password')this.value='' "></p>
<p><a href="#">Forgot Password?</a></p>
<p><input type="submit" value="Login"></p>
</fieldset>
</form>
<p><span class="btn-round">or</span></p>
<p>
<a class="facebook-before"></a>
<button class="facebook">Login Using Facbook</button>
</p>
<p>
<a class="twitter-before"></a>
<button class="twitter">Login Using Twitter</button>
</p>
</div> <!-- end login -->
</body>
</html>
X-UA-Compatible is set to IE=edge, but it still doesn't stop Compatibility Mode
As NEOSWF points out above, the Paul Irish conditional comments stops the meta tag having any affect.
There are several fixes all here (http://nicolasgallagher.com/better-conditional-classnames-for-hack-free-css/)
These include:
Adding two HTML classes, using server headers and adding a conditional comment above the doctype.
On my latest project I decided to remove the Paul Irish conditional comments. I didn't like the idea of adding anything before the html without doing LOTS of testing first and it's nice to see what has been set just by looking at the HTML.
In the end I surrounded a div straight after the body and used conditional comments eg
<!--[if IE 7]><div class="ie7"><!--<![endif]-->
... regular body stuff
<!--[if IE 7]></div><!--<![endif]-->
I could have done this around the body but its more difficult with CMSs like Wordpress.
Obviously its another DIV inside the markup, but its only for older browsers.
I think it could be a per project based decision though.
I've also read something about the charset meta tag needing to come in the first 1024 bytes so this ensures that.
Sometimes the simplest, easiest to read ideas are the best and its definitely worth thinking about! Thanks to the 6th comment on the link above for pointing this out.
Check if selected dropdown value is empty using jQuery
You forgot the # on the id selector:
if ($("#EventStartTimeMin").val() === "") {
// ...
}
HTTP get with headers using RestTemplate
Take a look at the JavaDoc for RestTemplate.
There is the corresponding getForObject methods that are the HTTP GET equivalents of postForObject, but they doesn't appear to fulfil your requirements of "GET with headers", as there is no way to specify headers on any of the calls.
Looking at the JavaDoc, no method that is HTTP GET specific allows you to also provide header information. There are alternatives though, one of which you have found and are using. The exchange methods allow you to provide an HttpEntity object representing the details of the request (including headers). The execute methods allow you to specify a RequestCallback from which you can add the headers upon its invocation.
Does C# have an equivalent to JavaScript's encodeURIComponent()?
Uri.EscapeDataString or HttpUtility.UrlEncode is the correct way to escape a string meant to be part of a URL.
Take for example the string "Stack Overflow":
HttpUtility.UrlEncode("Stack Overflow")-->"Stack+Overflow"Uri.EscapeUriString("Stack Overflow")-->"Stack%20Overflow"Uri.EscapeDataString("Stack + Overflow")--> Also encodes"+" to "%2b"---->Stack%20%2B%20%20Overflow
Only the last is correct when used as an actual part of the URL (as opposed to the value of one of the query string parameters)
Any free WPF themes?
Here's my expression dark theme for WPF controls.
Single Page Application: advantages and disadvantages
For such companies as google, amazon etc, whose servers are running at max capacity in 24/7-mode, reducing traffic means real money - less hardware, less energy, less maintenance. Shifting CPU-usage from server to client pays off, and SPAs shine. The advantages overweight disadvantages by far. So, SPA or not SPA depends much on the use case.
Just for mentioning another, probably not so obvious (for Web-developers) use case for SPAs: I'm currently looking for a way to implement GUIs in embedded systems and browser-based architecture seems appealing to me. Traditionally there were not many possibilities for UIs in embedded systems - Java, Qt, wx, etc or propriety commercial frameworks. Some years ago Adobe tried to enter the market with flash but seems to be not so successful.
Nowadays, as "embedded systems" are as powerful as mainframes some years ago, a browser-based UI connected to the control unit via REST is a possible solution. The advantage is, the huge palette of tools for UI for no cost. (e.g. Qt require 20-30$ per sold unit on royalty fees plus 3000-4000$ per developer)
For such architecture SPA offers many advantages - e.g. more familiar development-approach for desktop-app developers, reduced server access (often in car-industry the UI and system muddles are separate hardware, where the system-part has an RT OS).
As the only client is the built-in browser, the mentioned disadvantages like JS-availability, server-side logging, security don't count any more.
What exceptions should be thrown for invalid or unexpected parameters in .NET?
There is a standard ArgumentException that you could use, or you could subclass and make your own. There are several specific ArgumentException classes:
http://msdn.microsoft.com/en-us/library/system.argumentexception(VS.71).aspx
Whichever one works best.
Where does linux store my syslog?
syslog() generates a log message, which will be distributed by syslogd.
The file to configure syslogd is /etc/syslog.conf. This file will tell your where the messages are logged.
How to change options in this file ? Here you go http://www.bo.infn.it/alice/alice-doc/mll-doc/duix/admgde/node74.html
Changing cursor to waiting in javascript/jquery
In your jQuery use:
$("body").css("cursor", "progress");
and then back to normal again
$("body").css("cursor", "default");
Convert java.util.Date to java.time.LocalDate
If you are using ThreeTen Backport including ThreeTenABP
Date input = new Date(); // Imagine your Date here
LocalDate date = DateTimeUtils.toInstant(input)
.atZone(ZoneId.systemDefault())
.toLocalDate();
If you are using the backport of JSR 310, either you haven’t got a Date.toInstant() method or it won’t give you the org.threeten.bp.Instant that you need for you further conversion. Instead you need to use the DateTimeUtils class that comes as part of the backport. The remainder of the conversion is the same, so so is the explanation.
ng-change not working on a text input
Maybe you can try something like this:
Using a directive
directive('watchChange', function() {
return {
scope: {
onchange: '&watchChange'
},
link: function(scope, element, attrs) {
element.on('input', function() {
scope.onchange();
});
}
};
});
Get list of JSON objects with Spring RestTemplate
In my case I preferred to extract a String then browse the context using JsonNode interface
var response = restTemplate.exchange("https://my-url", HttpMethod.GET, entity, String.class);
if (response.getStatusCode() == HttpStatus.OK) {
var jsonString = response.getBody();
ObjectMapper mapper = new ObjectMapper();
JsonNode actualObj = mapper.readTree(jsonString);
System.out.println(actualObj);
}
or quickly
ObjectNode actualObj= restTemplate.getForObject("https://my-url", ObjectNode.class);
then read inner data with path expression i.e.
boolean b = actualObj.at("/0/states/0/no_data").asBoolean();
Using Node.JS, how do I read a JSON file into (server) memory?
using node-fs-extra (async await)
const readJsonFile = async () => {
try {
const myJsonObject = await fs.readJson('./my_json_file.json');
console.log(myJsonObject);
} catch (err) {
console.error(err)
}
}
readJsonFile() // prints your json object
Catching KeyboardInterrupt in Python during program shutdown
You could ignore SIGINTs after shutdown starts by calling signal.signal(signal.SIGINT, signal.SIG_IGN) before you start your cleanup code.
PageSpeed Insights 99/100 because of Google Analytics - How can I cache GA?
PHP
Add this in your HTML or PHP code:
<?php if (!isset($_SERVER['HTTP_USER_AGENT']) || stripos($_SERVER['HTTP_USER_AGENT'], 'Speed Insights') === false): ?>
<script>
(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
})(window,document,'script','https://www.google-analytics.com/analytics.js','ga');
ga('create', 'UA-PUT YOUR GOOGLE ANALYTICS ID HERE', 'auto');
ga('send', 'pageview');
</script>
<?php endif; ?>
JavaScript
This works fine with JavaScript:
<script>
if(navigator.userAgent.indexOf("Speed Insights") == -1) {
(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
})(window,document,'script','https://www.google-analytics.com/analytics.js','ga');
ga('create', 'UA-<PUT YOUR GOOGLE ANALYTICS ID HERE>', 'auto');
ga('send', 'pageview');
}
</script>
NiloVelez already said: Obviously, it won't make any real improvement, but if your only concern is getting a 100/100 score this will do it.
Selecting text in an element (akin to highlighting with your mouse)
This thread (dead now) contains really wonderful stuff. But I'm not able to do it right on this page using FF 3.5b99 + FireBug due to "Security Error".
Yipee!! I was able to select whole right hand sidebar with this code hope it helps you:
var r = document.createRange();
var w=document.getElementById("sidebar");
r.selectNodeContents(w);
var sel=window.getSelection();
sel.removeAllRanges();
sel.addRange(r);
PS:- I was not able to use objects returned by jquery selectors like
var w=$("div.welovestackoverflow",$("div.sidebar"));
//this throws **security exception**
r.selectNodeContents(w);
Adding :default => true to boolean in existing Rails column
If you just made a migration, you can rollback and then make your migration again.
To rollback you can do as many steps as you want:
rake db:rollback STEP=1
Or, if you are using Rails 5.2 or newer:
rails db:rollback STEP=1
Then, you can just make the migration again:
def change
add_column :profiles, :show_attribute, :boolean, default: true
end
Don't forget to rake db:migrate and if you are using heroku heroku run rake db:migrate
Getting RAW Soap Data from a Web Reference Client running in ASP.net
I would prefer to have the framework do the logging for you by hooking in a logging stream which logs as the framework processes that underlying stream. The following isn't as clean as I would like it, since you can't decide between request and response in the ChainStream method. The following is how I handle it. With thanks to Jon Hanna for the overriding a stream idea
public class LoggerSoapExtension : SoapExtension
{
private static readonly string LOG_DIRECTORY = ConfigurationManager.AppSettings["LOG_DIRECTORY"];
private LogStream _logger;
public override object GetInitializer(LogicalMethodInfo methodInfo, SoapExtensionAttribute attribute)
{
return null;
}
public override object GetInitializer(Type serviceType)
{
return null;
}
public override void Initialize(object initializer)
{
}
public override System.IO.Stream ChainStream(System.IO.Stream stream)
{
_logger = new LogStream(stream);
return _logger;
}
public override void ProcessMessage(SoapMessage message)
{
if (LOG_DIRECTORY != null)
{
switch (message.Stage)
{
case SoapMessageStage.BeforeSerialize:
_logger.Type = "request";
break;
case SoapMessageStage.AfterSerialize:
break;
case SoapMessageStage.BeforeDeserialize:
_logger.Type = "response";
break;
case SoapMessageStage.AfterDeserialize:
break;
}
}
}
internal class LogStream : Stream
{
private Stream _source;
private Stream _log;
private bool _logSetup;
private string _type;
public LogStream(Stream source)
{
_source = source;
}
internal string Type
{
set { _type = value; }
}
private Stream Logger
{
get
{
if (!_logSetup)
{
if (LOG_DIRECTORY != null)
{
try
{
DateTime now = DateTime.Now;
string folder = LOG_DIRECTORY + now.ToString("yyyyMMdd");
string subfolder = folder + "\\" + now.ToString("HH");
string client = System.Web.HttpContext.Current != null && System.Web.HttpContext.Current.Request != null && System.Web.HttpContext.Current.Request.UserHostAddress != null ? System.Web.HttpContext.Current.Request.UserHostAddress : string.Empty;
string ticks = now.ToString("yyyyMMdd'T'HHmmss.fffffff");
if (!Directory.Exists(folder))
Directory.CreateDirectory(folder);
if (!Directory.Exists(subfolder))
Directory.CreateDirectory(subfolder);
_log = new FileStream(new System.Text.StringBuilder(subfolder).Append('\\').Append(client).Append('_').Append(ticks).Append('_').Append(_type).Append(".xml").ToString(), FileMode.Create);
}
catch
{
_log = null;
}
}
_logSetup = true;
}
return _log;
}
}
public override bool CanRead
{
get
{
return _source.CanRead;
}
}
public override bool CanSeek
{
get
{
return _source.CanSeek;
}
}
public override bool CanWrite
{
get
{
return _source.CanWrite;
}
}
public override long Length
{
get
{
return _source.Length;
}
}
public override long Position
{
get
{
return _source.Position;
}
set
{
_source.Position = value;
}
}
public override void Flush()
{
_source.Flush();
if (Logger != null)
Logger.Flush();
}
public override long Seek(long offset, SeekOrigin origin)
{
return _source.Seek(offset, origin);
}
public override void SetLength(long value)
{
_source.SetLength(value);
}
public override int Read(byte[] buffer, int offset, int count)
{
count = _source.Read(buffer, offset, count);
if (Logger != null)
Logger.Write(buffer, offset, count);
return count;
}
public override void Write(byte[] buffer, int offset, int count)
{
_source.Write(buffer, offset, count);
if (Logger != null)
Logger.Write(buffer, offset, count);
}
public override int ReadByte()
{
int ret = _source.ReadByte();
if (ret != -1 && Logger != null)
Logger.WriteByte((byte)ret);
return ret;
}
public override void Close()
{
_source.Close();
if (Logger != null)
Logger.Close();
base.Close();
}
public override int ReadTimeout
{
get { return _source.ReadTimeout; }
set { _source.ReadTimeout = value; }
}
public override int WriteTimeout
{
get { return _source.WriteTimeout; }
set { _source.WriteTimeout = value; }
}
}
}
[AttributeUsage(AttributeTargets.Method)]
public class LoggerSoapExtensionAttribute : SoapExtensionAttribute
{
private int priority = 1;
public override int Priority
{
get
{
return priority;
}
set
{
priority = value;
}
}
public override System.Type ExtensionType
{
get
{
return typeof(LoggerSoapExtension);
}
}
}
What is the use of ObservableCollection in .net?
it is a collection which is used to notify mostly UI to change in the collection , it supports automatic notification.
Mainly used in WPF ,
Where say suppose you have UI with a list box and add button and when you click on he button an object of type suppose person will be added to the obseravablecollection and you bind this collection to the ItemSource of Listbox , so as soon as you added a new item in the collection , Listbox will update itself and add one more item in it.
How do I handle ImeOptions' done button click?
Try this, it should work for what you need:
editText.setOnEditorActionListener(new EditText.OnEditorActionListener() {
@Override
public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
if (actionId == EditorInfo.IME_ACTION_DONE) {
//do here your stuff f
return true;
}
return false;
}
});
Passing Multiple route params in Angular2
Two Methods for Passing Multiple route params in Angular
Method-1
In app.module.ts
Set path as component2.
imports: [
RouterModule.forRoot(
[ {path: 'component2/:id1/:id2', component: MyComp2}])
]
Call router to naviagte to MyComp2 with multiple params id1 and id2.
export class MyComp1 {
onClick(){
this._router.navigate( ['component2', "id1","id2"]);
}
}
Method-2
In app.module.ts
Set path as component2.
imports: [
RouterModule.forRoot(
[ {path: 'component2', component: MyComp2}])
]
Call router to naviagte to MyComp2 with multiple params id1 and id2.
export class MyComp1 {
onClick(){
this._router.navigate( ['component2', {id1: "id1 Value", id2:
"id2 Value"}]);
}
}
How to call a MySQL stored procedure from within PHP code?
I now found solution by using mysqli instead of mysql.
<?php
// enable error reporting
mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
//connect to database
$connection = mysqli_connect("hostname", "user", "password", "db", "port");
//run the store proc
$result = mysqli_query($connection, "CALL StoreProcName");
//loop the result set
while ($row = mysqli_fetch_array($result)){
echo $row[0] . " - " . + $row[1];
}
I found that many people seem to have a problem with using mysql_connect, mysql_query and mysql_fetch_array.
VBA: Selecting range by variables
you are turning them into an address but Cells(#,#) uses integer inputs not address inputs so just use lastRow = ActiveSheet.UsedRange.Rows.count and lastColumn = ActiveSheet.UsedRange.Columns.Count
Android Studio - Failed to apply plugin [id 'com.android.application']
In my case, if your version of build tools in the build.gradle file in the root folder like :
classpath 'com.android.tools.build:gradle:3.x.x' <--- version of tools
is not supported by the Gradle installed in your project, you can check the build tools/plugin supported versions here, and make sure that the version installed in your project is supported by that version of Gradle.
You don't need to upgrade Gradle, you just check if it supports the plugin installed in your project or not.
Best way to get user GPS location in background in Android
Download the source code from here (Get Current Location Using Background Service)
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="servicetutorial.service">
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"></uses-permission>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"></uses-permission>
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity"
android:theme="@android:style/Theme.Translucent.NoTitleBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service android:name=".GoogleService"></service>
</application>
</manifest>
activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:background="#ffffff"
android:layout_height="match_parent">
<TextView
android:layout_width="match_parent"
android:layout_height="50dp"
android:background="#3F51B5"
android:text="Location using service"
android:textColor="#ffffff"
android:textSize="20dp"
android:gravity="center"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:orientation="horizontal"
android:layout_height="50dp">
<TextView
android:layout_width="150dp"
android:layout_height="wrap_content"
android:text="Latitude"
android:layout_gravity="center_vertical"
android:layout_marginLeft="10dp"
android:textColor="#000000"
android:textSize="20dp"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""
android:id="@+id/tv_latitude"
android:layout_gravity="center_vertical"
android:layout_marginLeft="10dp"
android:textColor="#000000"
android:textSize="20dp"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:orientation="horizontal"
android:layout_height="50dp">
<TextView
android:layout_width="150dp"
android:layout_height="wrap_content"
android:text="Longitude"
android:layout_gravity="center_vertical"
android:layout_marginLeft="10dp"
android:textColor="#000000"
android:textSize="20dp"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""
android:id="@+id/tv_longitude"
android:layout_gravity="center_vertical"
android:layout_marginLeft="10dp"
android:textColor="#000000"
android:textSize="20dp"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:orientation="horizontal"
android:layout_height="50dp">
<TextView
android:layout_width="150dp"
android:layout_height="wrap_content"
android:text="Address"
android:layout_gravity="center_vertical"
android:layout_marginLeft="10dp"
android:textColor="#000000"
android:textSize="20dp"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""
android:id="@+id/tv_address"
android:layout_gravity="center_vertical"
android:layout_marginLeft="10dp"
android:textColor="#000000"
android:textSize="20dp"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:orientation="horizontal"
android:layout_height="50dp">
<TextView
android:layout_width="150dp"
android:layout_height="wrap_content"
android:text="Area"
android:layout_gravity="center_vertical"
android:layout_marginLeft="10dp"
android:textColor="#000000"
android:textSize="20dp"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""
android:id="@+id/tv_area"
android:layout_gravity="center_vertical"
android:layout_marginLeft="10dp"
android:textColor="#000000"
android:textSize="20dp"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:orientation="horizontal"
android:layout_height="50dp">
<TextView
android:layout_width="150dp"
android:layout_height="wrap_content"
android:text="Locality"
android:layout_gravity="center_vertical"
android:layout_marginLeft="10dp"
android:textColor="#000000"
android:textSize="20dp"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""
android:id="@+id/tv_locality"
android:layout_gravity="center_vertical"
android:layout_marginLeft="10dp"
android:textColor="#000000"
android:textSize="20dp"/>
</LinearLayout>
</LinearLayout>
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/btn_start"
android:text="Get Location"
android:layout_alignParentBottom="true"/>
</RelativeLayout>
MainActivity.java
package servicetutorial.service;
import android.*;
import android.app.Activity;
import android.app.ActivityManager;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.content.pm.PackageManager;
import android.location.Address;
import android.location.Geocoder;
import android.preference.PreferenceManager;
import android.renderscript.Double2;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import java.io.IOException;
import java.util.List;
import java.util.Locale;
public class MainActivity extends Activity {
Button btn_start;
private static final int REQUEST_PERMISSIONS = 100;
boolean boolean_permission;
TextView tv_latitude, tv_longitude, tv_address,tv_area,tv_locality;
SharedPreferences mPref;
SharedPreferences.Editor medit;
Double latitude,longitude;
Geocoder geocoder;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btn_start = (Button) findViewById(R.id.btn_start);
tv_address = (TextView) findViewById(R.id.tv_address);
tv_latitude = (TextView) findViewById(R.id.tv_latitude);
tv_longitude = (TextView) findViewById(R.id.tv_longitude);
tv_area = (TextView)findViewById(R.id.tv_area);
tv_locality = (TextView)findViewById(R.id.tv_locality);
geocoder = new Geocoder(this, Locale.getDefault());
mPref = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
medit = mPref.edit();
btn_start.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (boolean_permission) {
if (mPref.getString("service", "").matches("")) {
medit.putString("service", "service").commit();
Intent intent = new Intent(getApplicationContext(), GoogleService.class);
startService(intent);
} else {
Toast.makeText(getApplicationContext(), "Service is already running", Toast.LENGTH_SHORT).show();
}
} else {
Toast.makeText(getApplicationContext(), "Please enable the gps", Toast.LENGTH_SHORT).show();
}
}
});
fn_permission();
}
private void fn_permission() {
if ((ContextCompat.checkSelfPermission(getApplicationContext(), android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED)) {
if ((ActivityCompat.shouldShowRequestPermissionRationale(MainActivity.this, android.Manifest.permission.ACCESS_FINE_LOCATION))) {
} else {
ActivityCompat.requestPermissions(MainActivity.this, new String[]{android.Manifest.permission.ACCESS_FINE_LOCATION
},
REQUEST_PERMISSIONS);
}
} else {
boolean_permission = true;
}
}
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
switch (requestCode) {
case REQUEST_PERMISSIONS: {
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
boolean_permission = true;
} else {
Toast.makeText(getApplicationContext(), "Please allow the permission", Toast.LENGTH_LONG).show();
}
}
}
}
private BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
latitude = Double.valueOf(intent.getStringExtra("latutide"));
longitude = Double.valueOf(intent.getStringExtra("longitude"));
List<Address> addresses = null;
try {
addresses = geocoder.getFromLocation(latitude, longitude, 1);
String cityName = addresses.get(0).getAddressLine(0);
String stateName = addresses.get(0).getAddressLine(1);
String countryName = addresses.get(0).getAddressLine(2);
tv_area.setText(addresses.get(0).getAdminArea());
tv_locality.setText(stateName);
tv_address.setText(countryName);
} catch (IOException e1) {
e1.printStackTrace();
}
tv_latitude.setText(latitude+"");
tv_longitude.setText(longitude+"");
tv_address.getText();
}
};
@Override
protected void onResume() {
super.onResume();
registerReceiver(broadcastReceiver, new IntentFilter(GoogleService.str_receiver));
}
@Override
protected void onPause() {
super.onPause();
unregisterReceiver(broadcastReceiver);
}
}
GoogleService.java
package servicetutorial.service;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.os.Handler;
import android.os.IBinder;
import android.support.annotation.Nullable;
import android.util.Log;
import java.util.Timer;
import java.util.TimerTask;
/**
* Created by deepshikha on 24/11/16.
*/
public class GoogleService extends Service implements LocationListener{
boolean isGPSEnable = false;
boolean isNetworkEnable = false;
double latitude,longitude;
LocationManager locationManager;
Location location;
private Handler mHandler = new Handler();
private Timer mTimer = null;
long notify_interval = 1000;
public static String str_receiver = "servicetutorial.service.receiver";
Intent intent;
public GoogleService() {
}
@Nullable
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public void onCreate() {
super.onCreate();
mTimer = new Timer();
mTimer.schedule(new TimerTaskToGetLocation(),5,notify_interval);
intent = new Intent(str_receiver);
// fn_getlocation();
}
@Override
public void onLocationChanged(Location location) {
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
@Override
public void onProviderEnabled(String provider) {
}
@Override
public void onProviderDisabled(String provider) {
}
private void fn_getlocation(){
locationManager = (LocationManager)getApplicationContext().getSystemService(LOCATION_SERVICE);
isGPSEnable = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
isNetworkEnable = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
if (!isGPSEnable && !isNetworkEnable){
}else {
if (isNetworkEnable){
location = null;
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER,1000,0,this);
if (locationManager!=null){
location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (location!=null){
Log.e("latitude",location.getLatitude()+"");
Log.e("longitude",location.getLongitude()+"");
latitude = location.getLatitude();
longitude = location.getLongitude();
fn_update(location);
}
}
}
if (isGPSEnable){
location = null;
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,1000,0,this);
if (locationManager!=null){
location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (location!=null){
Log.e("latitude",location.getLatitude()+"");
Log.e("longitude",location.getLongitude()+"");
latitude = location.getLatitude();
longitude = location.getLongitude();
fn_update(location);
}
}
}
}
}
private class TimerTaskToGetLocation extends TimerTask{
@Override
public void run() {
mHandler.post(new Runnable() {
@Override
public void run() {
fn_getlocation();
}
});
}
}
private void fn_update(Location location){
intent.putExtra("latutide",location.getLatitude()+"");
intent.putExtra("longitude",location.getLongitude()+"");
sendBroadcast(intent);
}
}
Add this dependency
compile 'com.google.android.gms:play-services:9.4.0'
How can I temporarily disable a foreign key constraint in MySQL?
If the key field is nullable, then you can also set the value to null before attempting to delete it:
cursor.execute("UPDATE myapp_item SET myapp_style_id = NULL WHERE n = %s", n)
transaction.commit_unless_managed()
cursor.execute("UPDATE myapp_style SET myapp_item_id = NULL WHERE n = %s", n)
transaction.commit_unless_managed()
cursor.execute("DELETE FROM myapp_item WHERE n = %s", n)
transaction.commit_unless_managed()
cursor.execute("DELETE FROM myapp_style WHERE n = %s", n)
transaction.commit_unless_managed()
Specifying a custom DateTime format when serializing with Json.Net
You are on the right track. Since you said you can't modify the global settings, then the next best thing is to apply the JsonConverter attribute on an as-needed basis, as you suggested. It turns out Json.Net already has a built-in IsoDateTimeConverter that lets you specify the date format. Unfortunately, you can't set the format via the JsonConverter attribute, since the attribute's sole argument is a type. However, there is a simple solution: subclass the IsoDateTimeConverter, then specify the date format in the constructor of the subclass. Apply the JsonConverter attribute where needed, specifying your custom converter, and you're ready to go. Here is the entirety of the code needed:
class CustomDateTimeConverter : IsoDateTimeConverter
{
public CustomDateTimeConverter()
{
base.DateTimeFormat = "yyyy-MM-dd";
}
}
If you don't mind having the time in there also, you don't even need to subclass the IsoDateTimeConverter. Its default date format is yyyy'-'MM'-'dd'T'HH':'mm':'ss.FFFFFFFK (as seen in the source code).
elasticsearch bool query combine must with OR
$filterQuery = $this->queryFactory->create(QueryInterface::TYPE_BOOL, ['must' => $queries,'should'=>$queriesGeo]);
In must you need to add the query condition array which you want to work with AND and in should you need to add the query condition which you want to work with OR.
You can check this: https://github.com/Smile-SA/elasticsuite/issues/972
Google Recaptcha v3 example demo
I have seen most of the articles that don't work properly that's why new developers and professional developers get confused about it.
I am explaining to you in a very simple way. In this code, I am generating a google Recaptcha token at the client side at every 3 seconds of time interval because the token is valid for only a few minutes that's why if any user takes time to fill the form then it may be expired.
First I have an index.php file where I am going to write HTML and JavaScript code.
<!DOCTYPE html>
<html>
<head>
<title>Google Recaptcha V3</title>
</head>
<body>
<h1>Google Recaptcha V3</h1>
<form action="recaptcha.php" method="post">
<label>Name</label>
<input type="text" name="name" id="name">
<input type="hidden" name="token" id="token" />
<input type="hidden" name="action" id="action" />
<input type="submit" name="submit">
</form>
<script src="https://www.google.com/recaptcha/api.js?render=put your site key here"></script>
<script src="https://code.jquery.com/jquery-3.4.1.min.js"></script>
<script type="text/javascript">
$(document).ready(function(){
setInterval(function(){
grecaptcha.ready(function() {
grecaptcha.execute('put your site key here', {action: 'application_form'}).then(function(token) {
$('#token').val(token);
$('#action').val('application_form');
});
});
}, 3000);
});
</script>
</body>
</html>
Next, I have created recaptcha.php file to execute it at the server side
<?php
if ($_POST['submit']) {
$name = $_POST['name'];
$token = $_POST['token'];
$action = $_POST['action'];
$curlData = array(
'secret' => 'put your secret key here',
'response' => $token
);
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "https://www.google.com/recaptcha/api/siteverify");
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($curlData));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$curlResponse = curl_exec($ch);
$captchaResponse = json_decode($curlResponse, true);
if ($captchaResponse['success'] == '1' && $captchaResponse['action'] == $action && $captchaResponse['score'] >= 0.5 && $captchaResponse['hostname'] == $_SERVER['SERVER_NAME']) {
echo 'Form Submitted Successfully';
} else {
echo 'You are not a human';
}
}
Source of this code. If you would like to know the explanation of this code please visit. Google reCAPTCHA V3 integration in PHP
Regex matching beginning AND end strings
Well, the simple regex is this:
/^dbo\..*_fn$/
It would be better, however, to use the string manipulation functionality of whatever programming language you're using to slice off the first four and the last three characters of the string and check whether they're what you want.
JSON Parse File Path
This solution uses an Asynchronous call. It will likely work better than a synchronous solution.
var request = new XMLHttpRequest();
request.open("GET", "../../data/file.json", false);
request.send(null);
request.onreadystatechange = function() {
if ( request.readyState === 4 && request.status === 200 ) {
var my_JSON_object = JSON.parse(request.responseText);
console.log(my_JSON_object);
}
}
Python : Trying to POST form using requests
You can use the Session object
import requests
headers = {'User-Agent': 'Mozilla/5.0'}
payload = {'username':'niceusername','password':'123456'}
session = requests.Session()
session.post('https://admin.example.com/login.php',headers=headers,data=payload)
# the session instance holds the cookie. So use it to get/post later.
# e.g. session.get('https://example.com/profile')
The requested URL /about was not found on this server
I am working on MacOS, following operation solved my problem:
I copied from : https://akrabat.com/setting-up-php-mysql-on-os-x-10-7-lion/
cd /etc/apache2
Give write permission the config file to root: sudo chmod u+w httpd.conf sudo vim httpd.conf
Find #LoadModule php5_module libexec/apache2/libphp5.so
and remove the leading #
Find #LoadModule rewrite_module libexec/apache2/mod_rewrite.so
and remove the leading #
Find AllowOverride None within the section and change to AllowOverride All so that .htaccess files will work.
Change permissions back: sudo chmod u-w httpd.conf
Restart Apache by running following in terminal:
sudo apachectl restart
How to filter keys of an object with lodash?
Just change filter to omitBy
const data = { aaa: 111, abb: 222, bbb: 333 };_x000D_
const result = _.omitBy(data, (value, key) => !key.startsWith("a"));_x000D_
console.log(result);<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.15/lodash.min.js"></script>How to load up CSS files using Javascript?
Using jQuery:
$('head').append('<link rel="stylesheet" href="stylesheetfile.css" type="text/css" />');
How to upload, display and save images using node.js and express
First of all, you should make an HTML form containing a file input element. You also need to set the form's enctype attribute to multipart/form-data:
<form method="post" enctype="multipart/form-data" action="/upload">
<input type="file" name="file">
<input type="submit" value="Submit">
</form>
Assuming the form is defined in index.html stored in a directory named public relative to where your script is located, you can serve it this way:
const http = require("http");
const path = require("path");
const fs = require("fs");
const express = require("express");
const app = express();
const httpServer = http.createServer(app);
const PORT = process.env.PORT || 3000;
httpServer.listen(PORT, () => {
console.log(`Server is listening on port ${PORT}`);
});
// put the HTML file containing your form in a directory named "public" (relative to where this script is located)
app.get("/", express.static(path.join(__dirname, "./public")));
Once that's done, users will be able to upload files to your server via that form. But to reassemble the uploaded file in your application, you'll need to parse the request body (as multipart form data).
In Express 3.x you could use express.bodyParser middleware to handle multipart forms but as of Express 4.x, there's no body parser bundled with the framework. Luckily, you can choose from one of the many available multipart/form-data parsers out there. Here, I'll be using multer:
You need to define a route to handle form posts:
const multer = require("multer");
const handleError = (err, res) => {
res
.status(500)
.contentType("text/plain")
.end("Oops! Something went wrong!");
};
const upload = multer({
dest: "/path/to/temporary/directory/to/store/uploaded/files"
// you might also want to set some limits: https://github.com/expressjs/multer#limits
});
app.post(
"/upload",
upload.single("file" /* name attribute of <file> element in your form */),
(req, res) => {
const tempPath = req.file.path;
const targetPath = path.join(__dirname, "./uploads/image.png");
if (path.extname(req.file.originalname).toLowerCase() === ".png") {
fs.rename(tempPath, targetPath, err => {
if (err) return handleError(err, res);
res
.status(200)
.contentType("text/plain")
.end("File uploaded!");
});
} else {
fs.unlink(tempPath, err => {
if (err) return handleError(err, res);
res
.status(403)
.contentType("text/plain")
.end("Only .png files are allowed!");
});
}
}
);
In the example above, .png files posted to /upload will be saved to uploaded directory relative to where the script is located.
In order to show the uploaded image, assuming you already have an HTML page containing an img element:
<img src="/image.png" />
you can define another route in your express app and use res.sendFile to serve the stored image:
app.get("/image.png", (req, res) => {
res.sendFile(path.join(__dirname, "./uploads/image.png"));
});
Python naming conventions for modules
I know my solution is not very popular from the pythonic point of view, but I prefer to use the Java approach of one module->one class, with the module named as the class. I do understand the reason behind the python style, but I am not too fond of having a very large file containing a lot of classes. I find it difficult to browse, despite folding.
Another reason is version control: having a large file means that your commits tend to concentrate on that file. This can potentially lead to a higher quantity of conflicts to be resolved. You also loose the additional log information that your commit modifies specific files (therefore involving specific classes). Instead you see a modification to the module file, with only the commit comment to understand what modification has been done.
Summing up, if you prefer the python philosophy, go for the suggestions of the other posts. If you instead prefer the java-like philosophy, create a Nib.py containing class Nib.
What's the "average" requests per second for a production web application?
You can search "slashdot effect analysis" for graphs of what you would see if some aspect of the site suddenly became popular in the news, e.g. this graph on wiki.
Web-applications that survive tend to be the ones which can generate static pages instead of putting every request through a processing language.
There was an excellent video (I think it might have been on ted.com? I think it might have been by flickr web team? Does someone know the link?) with ideas on how to scale websites beyond the single server, e.g. how to allocate connections amongst the mix of read-only and read-write servers to get best effect for various types of users.
The type 'string' must be a non-nullable type in order to use it as parameter T in the generic type or method 'System.Nullable<T>'
Please note that in upcoming version of C# which is 8, the answers are not true.
All the reference types are non-nullable by default and you can actually do the following:
public string? MyNullableString;
this.MyNullableString = null; //Valid
However,
public string MyNonNullableString;
this.MyNonNullableString = null; //Not Valid and you'll receive compiler warning.
The important thing here is to show the intent of your code. If the "intent" is that the reference type can be null, then mark it so otherwise assigning null value to non-nullable would result in compiler warning.
Set angular scope variable in markup
ng-init does not work when you are assigning variables inside loop. Use
{{myVariable=whatever;""}}
The trailing "" stops the Angular expression being evaluated to any text.
Then you can simply call {{myVariable}} to output your variable value.
I found this very useful when iterating multiple nested arrays and I wanted to keep my current iteration info in one variable instead of querying it multiple times.
How do you push a Git tag to a branch using a refspec?
For pushing a single tag: git push <reponame> <tagname>
For instance, git push production 1.0.0. Tags are not bound to branches, they are bound to commits.
When you want to have the tag's content in the master branch, do that locally on your machine. I would assume that you continued developing in your local master branch. Then just a git push origin master should suffice.
What happens to a declared, uninitialized variable in C? Does it have a value?
Because computers have finite storage capacity, automatic variables will typically be held in storage elements (whether registers or RAM) that have previously been used for some other arbitrary purpose. If a such a variable is used before a value has been assigned to it, that storage may hold whatever it held previously, and so the contents of the variable will be unpredictable.
As an additional wrinkle, many compilers may keep variables in registers which are larger than the associated types. Although a compiler would be required to ensure that any value which is written to a variable and read back will be truncated and/or sign-extended to its proper size, many compilers will perform such truncation when variables are written and expect that it will have been performed before the variable is read. On such compilers, something like:
uint16_t hey(uint32_t x, uint32_t mode)
{ uint16_t q;
if (mode==1) q=2;
if (mode==3) q=4;
return q; }
uint32_t wow(uint32_t mode) {
return hey(1234567, mode);
}
might very well result in wow() storing the values 1234567 into registers
0 and 1, respectively, and calling foo(). Since x isn't needed within
"foo", and since functions are supposed to put their return value into
register 0, the compiler may allocate register 0 to q. If mode is 1 or
3, register 0 will be loaded with 2 or 4, respectively, but if it is some
other value, the function may return whatever was in register 0 (i.e. the
value 1234567) even though that value is not within the range of uint16_t.
To avoid requiring compilers to do extra work to ensure that uninitialized variables never seem to hold values outside their domain, and avoid needing to specify indeterminate behaviors in excessive detail, the Standard says that use of uninitialized automatic variables is Undefined Behavior. In some cases, the consequences of this may be even more surprising than a value being outside the range of its type. For example, given:
void moo(int mode)
{
if (mode < 5)
launch_nukes();
hey(0, mode);
}
a compiler could infer that because invoking moo() with a mode which is
greater than 3 will inevitably lead to the program invoking Undefined
Behavior, the compiler may omit any code which would only be relevant
if mode is 4 or greater, such as the code which would normally prevent
the launch of nukes in such cases. Note that neither the Standard, nor
modern compiler philosophy, would care about the fact that the return value
from "hey" is ignored--the act of trying to return it gives a compiler
unlimited license to generate arbitrary code.
How can I embed a YouTube video on GitHub wiki pages?
If you like HTML tags more than markdown + center alignment:
<div align="center">_x000D_
<a href="https://www.youtube.com/watch?v=YOUTUBE_VIDEO_ID_HERE"><img src="https://img.youtube.com/vi/YOUTUBE_VIDEO_ID_HERE/0.jpg" alt="IMAGE ALT TEXT"></a>_x000D_
</div>javax.mail.AuthenticationFailedException: failed to connect, no password specified?
In addition to RMT's answer. I also had to modify the code a bit.
- Transport.send should be accessed statically
- therefor, transport.connect did not do anything for me, I only needed to set the connection info in the initial Properties object.
here is my sample send() methods. The config object is just a dumb data container.
public boolean send(String to, String from, String subject, String text) {
return send(new String[] {to}, from, subject, text);
}
public boolean send(String[] to, String from, String subject, String text) {
Properties props = new Properties();
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.host", config.host);
props.put("mail.smtp.user", config.username);
props.put("mail.smtp.port", config.port);
props.put("mail.smtp.password", config.password);
Session session = Session.getInstance(props, new SmtpAuthenticator(config));
try {
Message message = new MimeMessage(session);
message.setFrom(new InternetAddress(from));
InternetAddress[] addressTo = new InternetAddress[to.length];
for (int i = 0; i < to.length; i++) {
addressTo[i] = new InternetAddress(to[i]);
}
message.setRecipients(Message.RecipientType.TO, addressTo);
message.setSubject(subject);
message.setText(text);
Transport.send(message);
} catch (MessagingException e) {
e.printStackTrace();
return false;
}
return true;
}
IIS Express gives Access Denied error when debugging ASP.NET MVC
Hosting on IIS Express: 1. Click on your project in the Solution Explorer to select the project. 2. If the Properties pane is not open, open it (F4). 3. In the Properties pane for your project: a) Set "Anonymous Authentication" to "Disabled". b) Set "Windows Authentication" to "Enabled".
Using find command in bash script
You can use this:
list=$(find /home/user/Desktop -name '*.pdf' -o -name '*.txt' -o -name '*.bmp')
Besides, you might want to use -iname instead of -name to catch files with ".PDF" (upper-case) extension as well.
Move cursor to end of file in vim
For starters, there's no need for the return. G$ will do. And you're being misleading by counting <Esc> and a in the length of a normal mode command.
However, you can use Ctrl + End if you like.
How do I get HTTP Request body content in Laravel?
Inside controller inject Request object. So if you want to access request body inside controller method 'foo' do the following:
public function foo(Request $request){
$bodyContent = $request->getContent();
}
How can I generate a 6 digit unique number?
Among the answers given here before this one, the one by "Yes Barry" is the most appropriate one.
random_int(100000, 999999)
Note that here we use random_int, which was introduced in PHP 7 and uses a cryptographic random generator, something that is important if you want random codes to be hard to guess. random_bytes was also introduced in PHP 7 and likewise uses a cryptographic random generator.
Many other solutions for random value generation, including those involving time(), microtime(), uniqid(), rand(), mt_rand(), str_shuffle(), and array_rand(), are much more predictable and are unsuitable if the random string will serve as a password, a bearer credential, a nonce, a session identifier, a "verification code" or "confirmation code", or another secret value.
The code above generates a string of 6 decimal digits. If you want to use a bigger character set (such as all upper-case letters, all lower-case letters, and the 10 digits), this is a more involved process, but you have to use random_int or random_bytes rather than rand(), mt_rand(), str_shuffle(), etc., if the string will serve as a password, a "confirmation code", or another secret value. See an answer to a related question, and see also: generating a random code in php?
I also list other things to keep in mind when generating unique identifiers, especially random ones.
Matplotlib scatter plot with different text at each data point
In versions earlier than matplotlib 2.0, ax.scatter is not necessary to plot text without markers. In version 2.0 you'll need ax.scatter to set the proper range and markers for text.
y = [2.56422, 3.77284, 3.52623, 3.51468, 3.02199]
z = [0.15, 0.3, 0.45, 0.6, 0.75]
n = [58, 651, 393, 203, 123]
fig, ax = plt.subplots()
for i, txt in enumerate(n):
ax.annotate(txt, (z[i], y[i]))
And in this link you can find an example in 3d.
Python Regex - How to Get Positions and Values of Matches
For Python 3.x
from re import finditer
for match in finditer("pattern", "string"):
print(match.span(), match.group())
You shall get \n separated tuples (comprising first and last indices of the match, respectively) and the match itself, for each hit in the string.
How to highlight cell if value duplicate in same column for google spreadsheet?
I tried all the options and none worked.
Only google app scripts helped me.
source : https://ctrlq.org/code/19649-find-duplicate-rows-in-google-sheets
At the top of your document
1.- go to tools > script editor
2.- set the name of your script
3.- paste this code :
function findDuplicates() {
// List the columns you want to check by number (A = 1)
var CHECK_COLUMNS = [1];
// Get the active sheet and info about it
var sourceSheet = SpreadsheetApp.getActiveSheet();
var numRows = sourceSheet.getLastRow();
var numCols = sourceSheet.getLastColumn();
// Create the temporary working sheet
var ss = SpreadsheetApp.getActiveSpreadsheet();
var newSheet = ss.insertSheet("FindDupes");
// Copy the desired rows to the FindDupes sheet
for (var i = 0; i < CHECK_COLUMNS.length; i++) {
var sourceRange = sourceSheet.getRange(1,CHECK_COLUMNS[i],numRows);
var nextCol = newSheet.getLastColumn() + 1;
sourceRange.copyTo(newSheet.getRange(1,nextCol,numRows));
}
// Find duplicates in the FindDupes sheet and color them in the main sheet
var dupes = false;
var data = newSheet.getDataRange().getValues();
for (i = 1; i < data.length - 1; i++) {
for (j = i+1; j < data.length; j++) {
if (data[i].join() == data[j].join()) {
dupes = true;
sourceSheet.getRange(i+1,1,1,numCols).setBackground("red");
sourceSheet.getRange(j+1,1,1,numCols).setBackground("red");
}
}
}
// Remove the FindDupes temporary sheet
ss.deleteSheet(newSheet);
// Alert the user with the results
if (dupes) {
Browser.msgBox("Possible duplicate(s) found and colored red.");
} else {
Browser.msgBox("No duplicates found.");
}
};
4.- save and run
In less than 3 seconds, my duplicate row was colored. Just copy-past the script.
If you don't know about google apps scripts , this links could be help you:
https://zapier.com/learn/google-sheets/google-apps-script-tutorial/
https://developers.google.com/apps-script/overview
I hope this helps.
getting the table row values with jquery
Here is a working example. I changed the code to output to a div instead of an alert box. Your issue was item.innerHTML I believe. I use the jQuery html function instead and that seemed to resolve the issue.
<table id='thisTable' class='disptable' style='margin-left:auto;margin-right:auto;' >
<tr>
<th>Fund</th>
<th>Organization</th>
<th>Access</th>
<th>Delete</th>
</tr>
<tr>
<td class='fund'>100000</td><td class='org'>10110</td><td>OWNED</td><td><a class='delbtn'ref='#'>X</a></td></tr>
<tr><td class='fund'>100000</td><td class='org'>67130</td><td>OWNED</td><td><a class='delbtn' href='#'>X</a></td></tr>
<tr><td class='fund'>170252</td><td class='org'>67130</td><td>OWNED</td><td><a class='delbtn' href='#'>X</a></td></tr>
<tr><td class='fund'>100000</td><td class='org'>67150</td><td>PENDING ACCESS</td><td><a class='delbtn' href='#'>X</a></td></tr>
<tr><td class='fund'>100000</td><td class='org'>67120</td><td>PENDING ACCESS</td><td><a class='delbtn' href='#'>X</a>
</td>
</tr>
</table>
<div id="output"></div>?
the javascript:
$('#thisTable tr').on('click', function(event) {
var tds = $(this).addClass('row-highlight').find('td');
var values = '';
tds.each(function(index, item) {
values = values + 'td' + (index + 1) + ':' + $(item).html() + '<br/>';
});
$("#output").html(values);
});
How to use numpy.genfromtxt when first column is string and the remaining columns are numbers?
data=np.genfromtxt(csv_file, delimiter=',', dtype='unicode')
It works fine for me.
How SID is different from Service name in Oracle tnsnames.ora
In short: SID = the unique name of your DB, ServiceName = the alias used when connecting
Not strictly true. SID = unique name of the INSTANCE (eg the oracle process running on the machine). Oracle considers the "Database" to be the files.
Service Name = alias to an INSTANCE (or many instances). The main purpose of this is if you are running a cluster, the client can say "connect me to SALES.acme.com", the DBA can on the fly change the number of instances which are available to SALES.acme.com requests, or even move SALES.acme.com to a completely different database without the client needing to change any settings.
C++ terminate called without an active exception
year, the thread must be join(). when the main exit
Regex: ignore case sensitivity
You also can lead your initial string, which you are going to check for pattern matching, to lower case. And using in your pattern lower case symbols respectively .
How to cast from List<Double> to double[] in Java?
You can convert to a Double[] by calling frameList.toArray(new Double[frameList.size()]), but you'll need to iterate the list/array to convert to double[]
Generate a dummy-variable
The other answers here offer direct routes to accomplish this task—one that many models (e.g. lm) will do for you internally anyway. Nonetheless, here are ways to make dummy variables with Max Kuhn's popular caret and recipes packages. While somewhat more verbose, they both scale easily to more complicated situations, and fit neatly into their respective frameworks.
caret::dummyVars
With caret, the relevant function is dummyVars, which has a predict method to apply it on a data frame:
df <- data.frame(letter = rep(c('a', 'b', 'c'), each = 2),
y = 1:6)
library(caret)
dummy <- dummyVars(~ ., data = df, fullRank = TRUE)
dummy
#> Dummy Variable Object
#>
#> Formula: ~.
#> 2 variables, 1 factors
#> Variables and levels will be separated by '.'
#> A full rank encoding is used
predict(dummy, df)
#> letter.b letter.c y
#> 1 0 0 1
#> 2 0 0 2
#> 3 1 0 3
#> 4 1 0 4
#> 5 0 1 5
#> 6 0 1 6
recipes::step_dummy
With recipes, the relevant function is step_dummy:
library(recipes)
dummy_recipe <- recipe(y ~ letter, df) %>%
step_dummy(letter)
dummy_recipe
#> Data Recipe
#>
#> Inputs:
#>
#> role #variables
#> outcome 1
#> predictor 1
#>
#> Steps:
#>
#> Dummy variables from letter
Depending on context, extract the data with prep and either bake or juice:
# Prep and bake on new data...
dummy_recipe %>%
prep() %>%
bake(df)
#> # A tibble: 6 x 3
#> y letter_b letter_c
#> <int> <dbl> <dbl>
#> 1 1 0 0
#> 2 2 0 0
#> 3 3 1 0
#> 4 4 1 0
#> 5 5 0 1
#> 6 6 0 1
# ...or use `retain = TRUE` and `juice` to extract training data
dummy_recipe %>%
prep(retain = TRUE) %>%
juice()
#> # A tibble: 6 x 3
#> y letter_b letter_c
#> <int> <dbl> <dbl>
#> 1 1 0 0
#> 2 2 0 0
#> 3 3 1 0
#> 4 4 1 0
#> 5 5 0 1
#> 6 6 0 1
Left/Right float button inside div
You can use justify-content: space-between in .test like so:
.test {_x000D_
display: flex;_x000D_
justify-content: space-between;_x000D_
width: 20rem;_x000D_
border: .1rem red solid;_x000D_
}<div class="test">_x000D_
<button>test</button>_x000D_
<button>test</button>_x000D_
</div>For those who want to use Bootstrap 4 can use justify-content-between:
div {_x000D_
width: 20rem;_x000D_
border: .1rem red solid;_x000D_
}<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" rel="stylesheet" />_x000D_
<div class="d-flex justify-content-between">_x000D_
<button>test</button>_x000D_
<button>test</button>_x000D_
</div>Caching a jquery ajax response in javascript/browser
I was looking for caching for my phonegap app storage and I found the answer of @TecHunter which is great but done using localCache.
I found and come to know that localStorage is another alternative to cache the data returned by ajax call. So, I created one demo using localStorage which will help others who may want to use localStorage instead of localCache for caching.
Ajax Call:
$.ajax({
type: "POST",
dataType: 'json',
contentType: "application/json; charset=utf-8",
url: url,
data: '{"Id":"' + Id + '"}',
cache: true, //It must "true" if you want to cache else "false"
//async: false,
success: function (data) {
var resData = JSON.parse(data);
var Info = resData.Info;
if (Info) {
customerName = Info.FirstName;
}
},
error: function (xhr, textStatus, error) {
alert("Error Happened!");
}
});
To store data into localStorage:
$.ajaxPrefilter(function (options, originalOptions, jqXHR) {
if (options.cache) {
var success = originalOptions.success || $.noop,
url = originalOptions.url;
options.cache = false; //remove jQuery cache as we have our own localStorage
options.beforeSend = function () {
if (localStorage.getItem(url)) {
success(localStorage.getItem(url));
return false;
}
return true;
};
options.success = function (data, textStatus) {
var responseData = JSON.stringify(data.responseJSON);
localStorage.setItem(url, responseData);
if ($.isFunction(success)) success(responseJSON); //call back to original ajax call
};
}
});
If you want to remove localStorage, use following statement wherever you want:
localStorage.removeItem("Info");
Hope it helps others!
Can a constructor in Java be private?
Yes and it is used to prevent instantiation and subsequently overriding. This is most often used in singleton classes.
Hadoop/Hive : Loading data from .csv on a local machine
You may try this, Following are few examples on how files are generated. Tool -- https://sourceforge.net/projects/csvtohive/?source=directory
Select a CSV file using Browse and set hadoop root directory ex: /user/bigdataproject/
Tool Generates Hadoop script with all csv files and following is a sample of generated Hadoop script to insert csv into Hadoop
#!/bin/bash -v
hadoop fs -put ./AllstarFull.csv /user/bigdataproject/AllstarFull.csv hive -f ./AllstarFull.hive
hadoop fs -put ./Appearances.csv /user/bigdataproject/Appearances.csv hive -f ./Appearances.hive
hadoop fs -put ./AwardsManagers.csv /user/bigdataproject/AwardsManagers.csv hive -f ./AwardsManagers.hive
Sample of generated Hive scripts
CREATE DATABASE IF NOT EXISTS lahman;
USE lahman;
CREATE TABLE AllstarFull (playerID string,yearID string,gameNum string,gameID string,teamID string,lgID string,GP string,startingPos string) row format delimited fields terminated by ',' stored as textfile;
LOAD DATA INPATH '/user/bigdataproject/AllstarFull.csv' OVERWRITE INTO TABLE AllstarFull;
SELECT * FROM AllstarFull;
Thanks Vijay
pandas loc vs. iloc vs. at vs. iat?
Let's start with this small df:
import pandas as pd
import time as tm
import numpy as np
n=10
a=np.arange(0,n**2)
df=pd.DataFrame(a.reshape(n,n))
We'll so have
df
Out[25]:
0 1 2 3 4 5 6 7 8 9
0 0 1 2 3 4 5 6 7 8 9
1 10 11 12 13 14 15 16 17 18 19
2 20 21 22 23 24 25 26 27 28 29
3 30 31 32 33 34 35 36 37 38 39
4 40 41 42 43 44 45 46 47 48 49
5 50 51 52 53 54 55 56 57 58 59
6 60 61 62 63 64 65 66 67 68 69
7 70 71 72 73 74 75 76 77 78 79
8 80 81 82 83 84 85 86 87 88 89
9 90 91 92 93 94 95 96 97 98 99
With this we have:
df.iloc[3,3]
Out[33]: 33
df.iat[3,3]
Out[34]: 33
df.iloc[:3,:3]
Out[35]:
0 1 2 3
0 0 1 2 3
1 10 11 12 13
2 20 21 22 23
3 30 31 32 33
df.iat[:3,:3]
Traceback (most recent call last):
... omissis ...
ValueError: At based indexing on an integer index can only have integer indexers
Thus we cannot use .iat for subset, where we must use .iloc only.
But let's try both to select from a larger df and let's check the speed ...
# -*- coding: utf-8 -*-
"""
Created on Wed Feb 7 09:58:39 2018
@author: Fabio Pomi
"""
import pandas as pd
import time as tm
import numpy as np
n=1000
a=np.arange(0,n**2)
df=pd.DataFrame(a.reshape(n,n))
t1=tm.time()
for j in df.index:
for i in df.columns:
a=df.iloc[j,i]
t2=tm.time()
for j in df.index:
for i in df.columns:
a=df.iat[j,i]
t3=tm.time()
loc=t2-t1
at=t3-t2
prc = loc/at *100
print('\nloc:%f at:%f prc:%f' %(loc,at,prc))
loc:10.485600 at:7.395423 prc:141.784987
So with .loc we can manage subsets and with .at only a single scalar, but .at is faster than .loc
:-)
If my interface must return Task what is the best way to have a no-operation implementation?
return await Task.FromResult(new MyClass());
Get a random boolean in python?
Adam's answer is quite fast, but I found that random.getrandbits(1) to be quite a lot faster. If you really want a boolean instead of a long then
bool(random.getrandbits(1))
is still about twice as fast as random.choice([True, False])
Both solutions need to import random
If utmost speed isn't to priority then random.choice definitely reads better
$ python -m timeit -s "import random" "random.choice([True, False])"
1000000 loops, best of 3: 0.904 usec per loop
$ python -m timeit -s "import random" "random.choice((True, False))"
1000000 loops, best of 3: 0.846 usec per loop
$ python -m timeit -s "import random" "random.getrandbits(1)"
1000000 loops, best of 3: 0.286 usec per loop
$ python -m timeit -s "import random" "bool(random.getrandbits(1))"
1000000 loops, best of 3: 0.441 usec per loop
$ python -m timeit -s "import random" "not random.getrandbits(1)"
1000000 loops, best of 3: 0.308 usec per loop
$ python -m timeit -s "from random import getrandbits" "not getrandbits(1)"
1000000 loops, best of 3: 0.262 usec per loop # not takes about 20us of this
Added this one after seeing @Pavel's answer
$ python -m timeit -s "from random import random" "random() < 0.5"
10000000 loops, best of 3: 0.115 usec per loop
Convert HTML string to image
Try the following:
using System;
using System.Drawing;
using System.Threading;
using System.Windows.Forms;
class Program
{
static void Main(string[] args)
{
var source = @"
<!DOCTYPE html>
<html>
<body>
<p>An image from W3Schools:</p>
<img
src=""http://www.w3schools.com/images/w3schools_green.jpg""
alt=""W3Schools.com""
width=""104""
height=""142"">
</body>
</html>";
StartBrowser(source);
Console.ReadLine();
}
private static void StartBrowser(string source)
{
var th = new Thread(() =>
{
var webBrowser = new WebBrowser();
webBrowser.ScrollBarsEnabled = false;
webBrowser.DocumentCompleted +=
webBrowser_DocumentCompleted;
webBrowser.DocumentText = source;
Application.Run();
});
th.SetApartmentState(ApartmentState.STA);
th.Start();
}
static void
webBrowser_DocumentCompleted(
object sender,
WebBrowserDocumentCompletedEventArgs e)
{
var webBrowser = (WebBrowser)sender;
using (Bitmap bitmap =
new Bitmap(
webBrowser.Width,
webBrowser.Height))
{
webBrowser
.DrawToBitmap(
bitmap,
new System.Drawing
.Rectangle(0, 0, bitmap.Width, bitmap.Height));
bitmap.Save(@"filename.jpg",
System.Drawing.Imaging.ImageFormat.Jpeg);
}
}
}
Note: Credits should go to Hans Passant for his excellent answer on the question WebBrowser Control in a new thread which inspired this solution.
Format numbers in django templates
Based on muhuk answer I did this simple tag encapsulating python string.format method.
- Create a
templatetagsat your's application folder. - Create a
format.pyfile on it. Add this to it:
from django import template register = template.Library() @register.filter(name='format') def format(value, fmt): return fmt.format(value)- Load it in your template
{% load format %} - Use it.
{{ some_value|format:"{:0.2f}" }}
MySQL DELETE FROM with subquery as condition
The alias should be included after the DELETE keyword:
DELETE th
FROM term_hierarchy AS th
WHERE th.parent = 1015 AND th.tid IN
(
SELECT DISTINCT(th1.tid)
FROM term_hierarchy AS th1
INNER JOIN term_hierarchy AS th2 ON (th1.tid = th2.tid AND th2.parent != 1015)
WHERE th1.parent = 1015
);
Disabling Warnings generated via _CRT_SECURE_NO_DEPRECATE
The best way to do this is by a simple check and assess. I usually do something like this:
#ifndef _DEPRECATION_DISABLE /* One time only */
#define _DEPRECATION_DISABLE /* Disable deprecation true */
#if (_MSC_VER >= 1400) /* Check version */
#pragma warning(disable: 4996) /* Disable deprecation */
#endif /* #if defined(NMEA_WIN) && (_MSC_VER >= 1400) */
#endif /* #ifndef _DEPRECATION_DISABLE */
All that is really required is the following:
#pragma warning(disable: 4996)
Hasn't failed me yet; Hope this helps
How to keep a VMWare VM's clock in sync?
If your host time is correct, you can set the following .vmx configuration file option to enable periodic synchronization:
tools.syncTime = true
By default, this synchronizes the time every minute. To change the periodic rate, set the following option to the desired synch time in seconds:
tools.syncTime.period = 60
For this to work you need to have VMWare tools installed in your guest OS.
See http://www.vmware.com/pdf/vmware_timekeeping.pdf for more information
How to download a branch with git?
Navigate to the folder on your new machine you want to download from git on git bash.
Use below command to download the code from any branch you like
git clone 'git ssh url' -b 'Branch Name'
It will download the respective branch code.
How to insert a file in MySQL database?
The BLOB datatype is best for storing files.
- See: How to store .pdf files into MySQL as BLOBs using PHP?
- The MySQL BLOB reference manual has some interesting comments
Display Back Arrow on Toolbar
I see a lot of answers but here is mine which is not mentioned before. It works from API 8+.
public class DetailActivity extends AppCompatActivity
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_detail);
// toolbar
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
// add back arrow to toolbar
if (getSupportActionBar() != null){
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setDisplayShowHomeEnabled(true);
}
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// handle arrow click here
if (item.getItemId() == android.R.id.home) {
finish(); // close this activity and return to preview activity (if there is any)
}
return super.onOptionsItemSelected(item);
}
Compare if BigDecimal is greater than zero
Use compareTo() function that's built into the class.
How do I change JPanel inside a JFrame on the fly?
I suggest you to add both panel at frame creation, then change the visible panel by calling setVisible(true/false) on both. When calling setVisible, the parent will be notified and asked to repaint itself.
How do I draw a set of vertical lines in gnuplot?
alternatively you can also do this:
p '< echo "x y"' w impulse
x and y are the coordinates of the point to which you draw a vertical bar
How to change Angular CLI favicon
as simple and easy as :
- add your icon or png in the same directory as favicon
- edit .angular-cli.json, in assets remove favicon.ico put yours in place
- edit index.html, search favicon and put yours in place
- run ng serve again
that's done
Extract string between two strings in java
Your regex looks correct, but you're splitting with it instead of matching with it. You want something like this:
// Untested code
Matcher matcher = Pattern.compile("<%=(.*?)%>").matcher(str);
while (matcher.find()) {
System.out.println(matcher.group());
}
Error Message : Cannot find or open the PDB file
Please check if the setting Generate Debug Info is Yes which under Project Propeties > Configuration Properties > Linker > Debugging tab. If not, try to change it to Yes.
Those perticular pdb's ( for ntdll.dll, mscoree.dll, kernel32.dll, etc ) are for the windows API and shouldn't be needed for simple apps. However, if you cannot find pdb's for your own compiled projects, I suggest making sure the Project Properties > Configuration Properties > Debugging > Working Directory uses the value from Project Properties > Configuration Properties > General > Output Directory .
You need to run Visual c++ in "Run as Administrator" mode.Right click on the executable and click "Run as Administrator"
How to open a folder in Windows Explorer from VBA?
Here is what I did.
Dim strPath As String
strPath = "\\server\Instructions\"
Shell "cmd.exe /c start """" """ & strPath & """", vbNormalFocus
Pros:
- Avoids opening new explorer instances (only sets focus if window exists).
- Relatively simple (does not need to reference win32 libraries).
- Window maximization (or minimization) is not mandatory. Window will open with normal size.
Cons:
- The cmd-window is visible for a short time.
This consistently opens a window to the folder if there is none open and switches to the open window if there is one open to that folder.
Thanks to PhilHibbs and AnorZaken for the basis for this. PhilHibbs comment didn't quite work for me, I needed to the command string to have a pair of double quotes before the folder name. And I preferred having a command prompt window appear for a bit rather than be forced to have the Explorer window maximized or minimized.
How to draw a circle with text in the middle?
Some of solutions here didn't work well for me on small circles. So I made this solution using ol absolute position.
Using SASS will look like this:
.circle-text {
position: relative;
display: block;
text-align: center;
border-radius: 50%;
> .inner-text {
display: block;
@extend .center-align;
}
}
.center-align {
position: absolute;
top: 50%;
left: 50%;
margin: auto;
-webkit-transform: translateX(-50%) translateY(-50%);
-ms-transform: translateX(-50%) translateY(-50%);
transform: translateX(-50%) translateY(-50%);
}
@mixin circle-text($size) {
width: $size;
height: $size;
@extend .circle-text;
}
And can be used like
#red-circle {
background-color: red;
border: 1px solid black;
@include circle-text(50px);
}
#green-circle {
background-color: green;
border: 1px solid black;
@include circle-text(150px);
}
See demo on https://codepen.io/matheusrufca/project/editor/DnYPMK
See the snippet to view output CSS
.circle-text {_x000D_
position: relative;_x000D_
display: block;_x000D_
border-radius: 50%;_x000D_
text-align: center;_x000D_
min-width: 50px;_x000D_
min-height: 50px;_x000D_
}_x000D_
_x000D_
.center-align {_x000D_
position: absolute;_x000D_
top: 50%;_x000D_
left: 50%;_x000D_
margin: auto;_x000D_
-webkit-transform: translateX(-50%) translateY(-50%);_x000D_
-ms-transform: translateX(-50%) translateY(-50%);_x000D_
transform: translateX(-50%) translateY(-50%);_x000D_
}<div id="red-circle" class="circle-text">_x000D_
<span class="inner-text center-align">Hey</span>_x000D_
</div>_x000D_
_x000D_
<div id="green-circle" class="circle-text">_x000D_
<span class="inner-text center-align">Big size circle</span>_x000D_
<div>_x000D_
<style>_x000D_
#red-circle {_x000D_
background-color: red;_x000D_
border: 1px solid black;_x000D_
width: 60px;_x000D_
height: 60px;_x000D_
}_x000D_
_x000D_
#green-circle {_x000D_
background-color: green;_x000D_
border: 1px solid black;_x000D_
width: 150px;_x000D_
height: 150px;_x000D_
}_x000D_
</style>Why can't DateTime.ParseExact() parse "9/1/2009" using "M/d/yyyy"
Try :
Configure in web config file
<system.web>
<globalization culture="ja-JP" uiCulture="zh-HK" />
</system.web>
eg: DateTime dt = DateTime.ParseExact("08/21/2013", "MM/dd/yyyy", null);
ref url : http://support.microsoft.com/kb/306162/
Private properties in JavaScript ES6 classes
I have developed a module that helps you use the access restriction in the JavaScript class called Capsulable. (Private & Protected Static)
If you're interested, check out my package below. https://github.com/hmmhmmhm/capsulable
const Capsulable = require('capsulable')
const Field = Capsulable()
class A {
constructor(_field){
// Configure data fields.
Field(this, _field)
// The code below provides access to
// the data fields when creating
// functions within the class.
Field(this).private
Field(this).protected
Field(this).protectedStatic
}
}
module.exports = A
Convert alphabet letters to number in Python
import string
# Amin
my_name = str(input("Enter a your name: "))
numbers = []
characters = []
output = []
for x, y in zip(range(1, 27), string.ascii_lowercase):
numbers.append(x)
characters.append(y)
print(numbers)
print(characters)
print("----------------------------------------------------------------------")
input = my_name
input = input.lower()
for character in input:
number = ord(character) - 96
output.append(number)
print(output)
print("----------------------------------------------------------------------")
sum = 0
lent_out = len(output)
for i in range(0,lent_out):
sum = sum + output[i]
print("resulat sum is : ")
print("-----------------")
print(sum)
resualt is :
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26]
['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z']
----------------------------------------------------------------------
[1, 13, 9, 14]
----------------------------------------------------------------------
resulat sum is :
-----------------
37
Tomcat 8 throwing - org.apache.catalina.webresources.Cache.getResource Unable to add the resource
In your $CATALINA_BASE/conf/context.xml add block below before </Context>
<Resources cachingAllowed="true" cacheMaxSize="100000" />
For more information: http://tomcat.apache.org/tomcat-8.0-doc/config/resources.html
Form/JavaScript not working on IE 11 with error DOM7011
In my case, this exception was being caused by an unsecure ajax call on an SSL enabled site. Specifically: my url was 'http://...' instead of 'https://...'. I just replaced it with '//...'.
To me, the error was misleading, and hopefully this may help anyone landing here after searching for the same error.
Git: See my last commit
Use git show:
git show --summary
This will show the names of created or removed files, but not the names of changed files. The git show command supports a wide variety of output formats that show various types of information about commits.
How can I pass an Integer class correctly by reference?
The Integer is immutable. You can wrap int in your custom wrapper class.
class WrapInt{
int value;
}
WrapInt theInt = new WrapInt();
inc(theInt);
System.out.println("main: "+theInt.value);
How to create a inner border for a box in html?
- Use
dashedborder style for outline. - Draw
background-colorwith:beforeor:afterpseudo element.
Note: This method will allow you to have maximum browser support.
Output Image:
* {box-sizing: border-box;}_x000D_
_x000D_
.box {_x000D_
border: 1px dashed #fff;_x000D_
position: relative;_x000D_
height: 160px;_x000D_
width: 350px;_x000D_
margin: 20px;_x000D_
}_x000D_
_x000D_
.box:before {_x000D_
position: absolute;_x000D_
background: black;_x000D_
content: '';_x000D_
bottom: -10px;_x000D_
right: -10px;_x000D_
left: -10px;_x000D_
top: -10px;_x000D_
z-index: -1;_x000D_
}<div class="box">_x000D_
_x000D_
</div>HTML anchor tag with Javascript onclick event
You can even try below option:
<a href="javascript:show_more_menu();">More >>></a>
What's the yield keyword in JavaScript?
don't forget the very helpful 'x of generator' syntax to loop through the generator. No need to use the next() function at all.
function* square(x){
for(i=0;i<100;i++){
x = x * 2;
yield x;
}
}
var gen = square(2);
for(x of gen){
console.log(x);
}
Read Session Id using Javascript
Yes. As the session ID is either transported over the URL (document.location.href) or via a cookie (document.cookie), you could check both for the presence of a session ID.
Implementing a Custom Error page on an ASP.Net website
Is it a spelling error in your closing tag ie:
</CustomErrors> instead of </CustomError>?
Attempted to read or write protected memory. This is often an indication that other memory is corrupt
I also faced this issue with Visual Studio(VS) 2010. More interestingly, I had several projects in my solution (Console application, WPF application, Windows Forms application) but it was failing only when, I was setting the "Console Application" type of project as start up project of the solution(Even for those which had literally no code or any additional assemblies referred apart from the default ones which come with project template itself).
Following change finally helped me nail down the issue: Go to project properties of the console application project (Alternatively, select project file in solution explorer and press Alt + Enter key combination) -> Go to Debug tab -> Scroll to Enable Debuggers section in right pane -> Check the Enable unmanaged code debugging check box as shown in the snapshot below -> Click Floppy button in the toolbar to save project properties. Root cause of why it happened is still not known to me. Only thing I observed was that there were lot of windows updates which had got installed on my machine the previous night which mostly constituted of office updates and OS updates (More than a dozen KB articles).
Update: VS 2017 onward the setting name has changed as shown in the screenshot below:
Removing packages installed with go get
You can delete the archive files and executable binaries that go install (or go get) produces for a package with go clean -i importpath.... These normally reside under $GOPATH/pkg and $GOPATH/bin, respectively.
Be sure to include ... on the importpath, since it appears that, if a package includes an executable, go clean -i will only remove that and not archive files for subpackages, like gore/gocode in the example below.
Source code then needs to be removed manually from $GOPATH/src.
go clean has an -n flag for a dry run that prints what will be run without executing it, so you can be certain (see go help clean). It also has a tempting -r flag to recursively clean dependencies, which you probably don't want to actually use since you'll see from a dry run that it will delete lots of standard library archive files!
A complete example, which you could base a script on if you like:
$ go get -u github.com/motemen/gore
$ which gore
/Users/ches/src/go/bin/gore
$ go clean -i -n github.com/motemen/gore...
cd /Users/ches/src/go/src/github.com/motemen/gore
rm -f gore gore.exe gore.test gore.test.exe commands commands.exe commands_test commands_test.exe complete complete.exe complete_test complete_test.exe debug debug.exe helpers_test helpers_test.exe liner liner.exe log log.exe main main.exe node node.exe node_test node_test.exe quickfix quickfix.exe session_test session_test.exe terminal_unix terminal_unix.exe terminal_windows terminal_windows.exe utils utils.exe
rm -f /Users/ches/src/go/bin/gore
cd /Users/ches/src/go/src/github.com/motemen/gore/gocode
rm -f gocode.test gocode.test.exe
rm -f /Users/ches/src/go/pkg/darwin_amd64/github.com/motemen/gore/gocode.a
$ go clean -i github.com/motemen/gore...
$ which gore
$ tree $GOPATH/pkg/darwin_amd64/github.com/motemen/gore
/Users/ches/src/go/pkg/darwin_amd64/github.com/motemen/gore
0 directories, 0 files
# If that empty directory really bugs you...
$ rmdir $GOPATH/pkg/darwin_amd64/github.com/motemen/gore
$ rm -rf $GOPATH/src/github.com/motemen/gore
Note that this information is based on the go tool in Go version 1.5.1.
Edit and replay XHR chrome/firefox etc?
Microsoft Chromium-based Edge supports "Edit and Replay" requests in the Network Tab as an experimental feature:
More details about the feature and how to enable it can be found here
What does it mean by select 1 from table?
The result is 1 for every record in the table.
Return row number(s) for a particular value in a column in a dataframe
which(df==my.val, arr.ind=TRUE)
How to create <input type=“text”/> dynamically
<button id="add" onclick="add()">Add Element</button>
<div id="hostI"></div>
<template id="templateInput">
<input type="text">
</template>
<script>
function add() {
// Using Template, element is created
var templateInput = document.querySelector('#templateInput');
var clone = document.importNode(templateInput.content, true);
// The Element is added to document
var hostI = document.querySelector('#hostI');
hostI.appendChild(clone);
}
</script>
HTML Templates are now the recommended standards to generate dynamic content.
How to loop and render elements in React.js without an array of objects to map?
You can still use map if you can afford to create a makeshift array:
{
new Array(this.props.level).fill(0).map((_, index) => (
<span className='indent' key={index}></span>
))
}
This works because new Array(n).fill(x) creates an array of size n filled with x, which can then aid map.
Initialize a vector array of strings
const char* args[] = {"01", "02", "03", "04"};
std::vector<std::string> v(args, args + 4);
And in C++0x, you can take advantage of std::initializer_list<>:
How can I upgrade specific packages using pip and a requirements file?
If you only want to upgrade one specific package called somepackage, the command you should use in recent versions of pip is
pip install --upgrade --upgrade-strategy only-if-needed somepackage
This is very useful when you develop an application in Django that currently will only work with a specific version of Django (say Django=1.9.x) and want to upgrade some dependent package with a bug-fix/new feature and the upgraded package depends on Django (but it works with, say, any version of Django after 1.5).
The default behavior of pip install --upgrade django-some-package would be to upgrade Django to the latest version available which could otherwise break your application, though with the --upgrade-strategy only-if-needed dependent packages will now only be upgraded as necessary.
How do I remove quotes from a string?
str_replace('"', "", $string);
str_replace("'", "", $string);
I assume you mean quotation marks?
Otherwise, go for some regex, this will work for html quotes for example:
preg_replace("/<!--.*?-->/", "", $string);
C-style quotes:
preg_replace("/\/\/.*?\n/", "\n", $string);
CSS-style quotes:
preg_replace("/\/*.*?\*\//", "", $string);
bash-style quotes:
preg-replace("/#.*?\n/", "\n", $string);
Etc etc...
Tomcat base URL redirection
Take a look at UrlRewriteFilter which is essentially a java-based implementation of Apache's mod_rewrite.
You'll need to extract it into ROOT folder under your Tomcat's webapps folder; you can then configure redirects to any other context within its WEB-INF/urlrewrite.xml configuration file.
Which HTML elements can receive focus?
There isn't a definite list, it's up to the browser. The only standard we have is DOM Level 2 HTML, according to which the only elements that have a focus() method are
HTMLInputElement, HTMLSelectElement, HTMLTextAreaElement and HTMLAnchorElement. This notably omits HTMLButtonElement and HTMLAreaElement.
Today's browsers define focus() on HTMLElement, but an element won't actually take focus unless it's one of:
- HTMLAnchorElement/HTMLAreaElement with an href
- HTMLInputElement/HTMLSelectElement/HTMLTextAreaElement/HTMLButtonElement but not with
disabled(IE actually gives you an error if you try), and file uploads have unusual behaviour for security reasons - HTMLIFrameElement (though focusing it doesn't do anything useful). Other embedding elements also, maybe, I haven't tested them all.
- Any element with a
tabindex
There are likely to be other subtle exceptions and additions to this behaviour depending on browser.
How do I move a file from one location to another in Java?
Java 6
public boolean moveFile(String sourcePath, String targetPath) {
File fileToMove = new File(sourcePath);
return fileToMove.renameTo(new File(targetPath));
}
Java 7 (Using NIO)
public boolean moveFile(String sourcePath, String targetPath) {
boolean fileMoved = true;
try {
Files.move(Paths.get(sourcePath), Paths.get(targetPath), StandardCopyOption.REPLACE_EXISTING);
} catch (Exception e) {
fileMoved = false;
e.printStackTrace();
}
return fileMoved;
}
What is an alternative to execfile in Python 3?
If the script you want to load is in the same directory than the one you run, maybe "import" will do the job ?
If you need to dynamically import code the built-in function __ import__ and the module imp are worth looking at.
>>> import sys
>>> sys.path = ['/path/to/script'] + sys.path
>>> __import__('test')
<module 'test' from '/path/to/script/test.pyc'>
>>> __import__('test').run()
'Hello world!'
test.py:
def run():
return "Hello world!"
If you're using Python 3.1 or later, you should also take a look at importlib.
see if two files have the same content in python
Yes, I think hashing the file would be the best way if you have to compare several files and store hashes for later comparison. As hash can clash, a byte-by-byte comparison may be done depending on the use case.
Generally byte-by-byte comparison would be sufficient and efficient, which filecmp module already does + other things too.
See http://docs.python.org/library/filecmp.html e.g.
>>> import filecmp
>>> filecmp.cmp('file1.txt', 'file1.txt')
True
>>> filecmp.cmp('file1.txt', 'file2.txt')
False
Speed consideration: Usually if only two files have to be compared, hashing them and comparing them would be slower instead of simple byte-by-byte comparison if done efficiently. e.g. code below tries to time hash vs byte-by-byte
Disclaimer: this is not the best way of timing or comparing two algo. and there is need for improvements but it does give rough idea. If you think it should be improved do tell me I will change it.
import random
import string
import hashlib
import time
def getRandText(N):
return "".join([random.choice(string.printable) for i in xrange(N)])
N=1000000
randText1 = getRandText(N)
randText2 = getRandText(N)
def cmpHash(text1, text2):
hash1 = hashlib.md5()
hash1.update(text1)
hash1 = hash1.hexdigest()
hash2 = hashlib.md5()
hash2.update(text2)
hash2 = hash2.hexdigest()
return hash1 == hash2
def cmpByteByByte(text1, text2):
return text1 == text2
for cmpFunc in (cmpHash, cmpByteByByte):
st = time.time()
for i in range(10):
cmpFunc(randText1, randText2)
print cmpFunc.func_name,time.time()-st
and the output is
cmpHash 0.234999895096
cmpByteByByte 0.0
Drawing in Java using Canvas
You've got to override your Canvas's paint(Graphics g) method and perform your drawing there. See the paint() documentation.
As it states, the default operation is to clear the canvas, so your call to the canvas' graphics object doesn't perform as you would expect.
Accessing last x characters of a string in Bash
Last three characters of string:
${string: -3}
or
${string:(-3)}
(mind the space between : and -3 in the first form).
Please refer to the Shell Parameter Expansion in the reference manual:
${parameter:offset}
${parameter:offset:length}
Expands to up to length characters of parameter starting at the character
specified by offset. If length is omitted, expands to the substring of parameter
starting at the character specified by offset. length and offset are arithmetic
expressions (see Shell Arithmetic). This is referred to as Substring Expansion.
If offset evaluates to a number less than zero, the value is used as an offset
from the end of the value of parameter. If length evaluates to a number less than
zero, and parameter is not ‘@’ and not an indexed or associative array, it is
interpreted as an offset from the end of the value of parameter rather than a
number of characters, and the expansion is the characters between the two
offsets. If parameter is ‘@’, the result is length positional parameters
beginning at offset. If parameter is an indexed array name subscripted by ‘@’ or
‘*’, the result is the length members of the array beginning with
${parameter[offset]}. A negative offset is taken relative to one greater than the
maximum index of the specified array. Substring expansion applied to an
associative array produces undefined results.
Note that a negative offset must be separated from the colon by at least one
space to avoid being confused with the ‘:-’ expansion. Substring indexing is
zero-based unless the positional parameters are used, in which case the indexing
starts at 1 by default. If offset is 0, and the positional parameters are used,
$@ is prefixed to the list.
Since this answer gets a few regular views, let me add a possibility to address John Rix's comment; as he mentions, if your string has length less than 3, ${string: -3} expands to the empty string. If, in this case, you want the expansion of string, you may use:
${string:${#string}<3?0:-3}
This uses the ?: ternary if operator, that may be used in Shell Arithmetic; since as documented, the offset is an arithmetic expression, this is valid.
Update for a POSIX-compliant solution
The previous part gives the best option when using Bash. If you want to target POSIX shells, here's an option (that doesn't use pipes or external tools like cut):
# New variable with 3 last characters removed
prefix=${string%???}
# The new string is obtained by removing the prefix a from string
newstring=${string#"$prefix"}
One of the main things to observe here is the use of quoting for prefix inside the parameter expansion. This is mentioned in the POSIX ref (at the end of the section):
The following four varieties of parameter expansion provide for substring processing. In each case, pattern matching notation (see Pattern Matching Notation), rather than regular expression notation, shall be used to evaluate the patterns. If parameter is '#', '*', or '@', the result of the expansion is unspecified. If parameter is unset and set -u is in effect, the expansion shall fail. Enclosing the full parameter expansion string in double-quotes shall not cause the following four varieties of pattern characters to be quoted, whereas quoting characters within the braces shall have this effect. In each variety, if word is omitted, the empty pattern shall be used.
This is important if your string contains special characters. E.g. (in dash),
$ string="hello*ext"
$ prefix=${string%???}
$ # Without quotes (WRONG)
$ echo "${string#$prefix}"
*ext
$ # With quotes (CORRECT)
$ echo "${string#"$prefix"}"
ext
Of course, this is usable only when then number of characters is known in advance, as you have to hardcode the number of ? in the parameter expansion; but when it's the case, it's a good portable solution.
Requests (Caused by SSLError("Can't connect to HTTPS URL because the SSL module is not available.") Error in PyCharm requesting website
There is no need to add paths to environment if you use the Anaconda Prompt.
Start the Anaconda prompt change to your directory and run your script or start your editor from there. This will ensure you are in the full Anaconda environment and the SSL error will stop.
Whats the difference between command prompt and Anaconda Prompt? See this SO answer to what is the difference between command prompt and anaconda prompt.
How to fill in proxy information in cntlm config file?
Here is a guide on how to use cntlm
What is cntlm?
cntlm is an NTLM/NTLMv2 authenticating HTTP proxy
It takes the address of your proxy and opens a listening socket, forwarding each request to the parent proxy
Why cntlm?
Using cntlm we make it possible to run tools like choro, pip3, apt-get from a command line
pip3 install requests
choco install git
The main advantage of cntlm is password protection.
With cntlm you can use password hashes.
So NO PLAINTEXT PASSWORD in %HTTP_PROXY% and %HTTPS_PROXY% environment variables
Install cntlm
You can get the latest cntlm release from sourceforge
Note! Username and domain
My username is zezulinsky
My domain is local
When I run commands I use zezulinsky@local
Place your username when you run commands
Generate password hash
Run a command
cntlm -u zezulinsky@local -H
Enter your password:
Password:
As a result you are getting hashed password:
PassLM AB7D42F42QQQQ407552C4BCA4AEBFB11
PassNT PE78D847E35FA7FA59710D1231AAAF99
PassNTLMv2 46738B2E607F9093296AA4C319C3A259
Verify your generated hash is valid
Run a command
cntlm -u zezulinsky@local -M http://google.com
Enter your password
Password:
The result output
Config profile 1/4... OK (HTTP code: 301)
----------------------------[ Profile 0 ]------
Auth NTLMv2
PassNTLMv2 46738B2E607F9093296AA4C319C3A259
------------------------------------------------
Note! check that PassNTLMv2 hash is the same The resulting hash is the same for both commands
PassNTLMv2 46738B2E607F9093296AA4C319C3A259
Change configuration file
Place generated hashes into the cntlm.ini configuration file
C:\Program Files (x86)\Cntlm\cntlm.ini
Here is how your cntlm.ini should look like
Username zezulinsky
Domain local
PassLM AB7D42F42QQQQ407552C4BCA4AEBFB11
PassNT PE78D847E35FA7FA59710D1231AAAF99
PassNTLMv2 46738B2E607F9093296AA4C319C3A259
Proxy PROXYSERVER:8080
NoProxy localhost, 127.0.0.*
Listen 3128
Note! newline at the end of cntlm.ini
It is important to add a newline at the end of the cntlm.ini configuration file
Set your environment variables
HTTPS_PROXY=http://localhost:3128
HTTP_PROXY=http://localhost:3128
Check that your cntlm works
Stop all the processes named cntlm.exe with process explorer
Run the command
cntlm -u zezulinsky@local -H
The output looks like
cygwin warning:
MS-DOS style path detected: C:\Program Files (x86)\Cntlm\cntlm.ini
Preferred POSIX equivalent is: /Cntlm/cntlm.ini
CYGWIN environment variable option "nodosfilewarning" turns off this warning.
Consult the user's guide for more details about POSIX paths:
http://cygwin.com/cygwin-ug-net/using.html#using-pathnames
section: local, Username = 'zezulinsky'
section: local, Domain = 'local'
section: local, PassLM = 'AB7D42F42QQQQ407552C4BCA4AEBFB11'
section: local, PassNT = 'PE78D847E35FA7FA59710D1231AAAF99'
section: local, PassNTLMv2 = '46738B2E607F9093296AA4C319C3A259'
section: local, Proxy = 'PROXYSERVER:8080'
section: local, NoProxy = 'localhost, 10.*, 127.0.0.*
section: local, Listen = '3128'
Default config file opened successfully
cntlm: Proxy listening on 127.0.0.1:3128
Adding no-proxy for: 'localhost'
Adding no-proxy for: '10.*'
Adding no-proxy for: '127.0.0.*'
cntlm: Workstation name used: MYWORKSTATION
cntlm: Using following NTLM hashes: NTLMv2(1) NT(0) LM(0)
cntlm: PID 1234: Cntlm ready, staying in the foreground
Open a new cmd and run a command:
pip3 install requests
You should have requests python package installed
Restart your machine
Congrats, now you have cntlm installed and configured
WARNING: Exception encountered during context initialization - cancelling refresh attempt
The important part is this:
Cannot find class [com.rakuten.points.persistence.manager.MemberPointSummaryDAOImpl] for bean with name 'MemberPointSummaryDAOImpl' defined in ServletContext resource [/WEB-INF/context/PersistenceManagerContext.xml];
due to:
nested exception is java.lang.ClassNotFoundException: com.rakuten.points.persistence.manager.MemberPointSummaryDAOImpl
According to this log, Spring could not find your MemberPointSummaryDAOImpl class.
Post an object as data using Jquery Ajax
Just pass the object as is. Note you can create the object as follows
var data0 = {numberId: "1", companyId : "531"};
$.ajax({
type: "POST",
url: "TelephoneNumbers.aspx/DeleteNumber",
data: dataO,
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function(msg) {
alert('In Ajax');
}
});
UPDATE seems an odd issue with the serializer, maybe it is expecting a string, out of interest can you try the following.
data: "{'numberId':'1', 'companyId ':'531'}",
Pythonic way to check if a list is sorted or not
If you want the fastest way for numpy arrays, use numba, which if you use conda should be already installed
The code will be fast because it will be compiled by numba
import numba
@numba.jit
def issorted(vec, ascending=True):
if len(vec) < 2:
return True
if ascending:
for i in range(1, len(vec)):
if vec[i-1] > vec[i]:
return False
return True
else:
for i in range(1, len(vec)):
if vec[i-1] < vec[i]:
return False
return True
and then:
>>> issorted(array([4,9,100]))
>>> True
Convert HTML to NSAttributedString in iOS
Swift 3:
Try this:
extension String {
func htmlAttributedString() -> NSAttributedString? {
guard let data = self.data(using: String.Encoding.utf16, allowLossyConversion: false) else { return nil }
guard let html = try? NSMutableAttributedString(
data: data,
options: [NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType],
documentAttributes: nil) else { return nil }
return html
}
}
And for using:
let str = "<h1>Hello bro</h1><h2>Come On</h2><h3>Go sis</h3><ul><li>ME 1</li><li>ME 2</li></ul> <p>It is me bro , remember please</p>"
self.contentLabel.attributedText = str.htmlAttributedString()
How to nicely format floating numbers to string without unnecessary decimal 0's
My two cents:
if(n % 1 == 0) {
return String.format(Locale.US, "%.0f", n));
} else {
return String.format(Locale.US, "%.1f", n));
}
How does the data-toggle attribute work? (What's its API?)
The data-toggle attribute simple tell Bootstrap what exactly to do by giving it the name of the toggle action it is about to perform on a target element. If you specify collapse. It means bootstrap will collapse or uncollapse the element pointed by data-target of the action you clicked
Note: the target element must have the appropriate class for bootstrap to carry out the action
Source action:
data-toggle = collapse //type of toggle
data-target = #myDiv
Target:
class=collapse //I can collapse
id=myDiv
This is same for other type of toggle actions like tab, modal, dropdown
Finding the direction of scrolling in a UIScrollView?
Swift 2.2 Simple solution which tracks single and multiple directions without any loss.
// Keep last location with parameter
var lastLocation:CGPoint = CGPointZero
// We are using only this function so, we can
// track each scroll without lose anyone
override func scrollViewWillBeginDragging(scrollView: UIScrollView) {
let currentLocation = scrollView.contentOffset
// Add each direction string
var directionList:[String] = []
if lastLocation.x < currentLocation.x {
//print("right")
directionList.append("Right")
} else if lastLocation.x > currentLocation.x {
//print("left")
directionList.append("Left")
}
// there is no "else if" to track both vertical
// and horizontal direction
if lastLocation.y < currentLocation.y {
//print("up")
directionList.append("Up")
} else if lastLocation.y > currentLocation.y {
//print("down")
directionList.append("Down")
}
// scrolled to single direction
if directionList.count == 1 {
print("scrolled to \(directionList[0]) direction.")
} else if directionList.count > 0 { // scrolled to multiple direction
print("scrolled to \(directionList[0])-\(directionList[1]) direction.")
}
// Update last location after check current otherwise,
// values will be same
lastLocation = scrollView.contentOffset
}
How to check if an email address exists without sending an email?
This will fail (amongst other cases) when the target mailserver uses greylisting.
Greylisting: SMTP server refuses delivery the first time a previously unknown client connects, allows next time(s); this keeps some percentage of spambots out, while allowing legitimate use - as it is expected that a legitimate mail sender will retry, which is what normal mail transfer agents will do.
However, if your code only checks on the server once, a server with greylisting will deny delivery (as your client is connecting for the first time); unless you check again in a little while, you may be incorrectly rejecting valid e-mail addresses.
I want to compare two lists in different worksheets in Excel to locate any duplicates
Without VBA...
If you can use a helper column, you can use the MATCH function to test if a value in one column exists in another column (or in another column on another worksheet). It will return an Error if there is no match
To simply identify duplicates, use a helper column
Assume data in Sheet1, Column A, and another list in Sheet2, Column A. In your helper column, row 1, place the following formula:
=If(IsError(Match(A1, 'Sheet2'!A:A,False)),"","Duplicate")
Drag/copy this forumla down, and it should identify the duplicates.
To highlight cells, use conditional formatting:
With some tinkering, you can use this MATCH function in a Conditional Formatting rule which would highlight duplicate values. I would probably do this instead of using a helper column, although the helper column is a great way to "see" results before you make the conditional formatting rule.
Something like:
=NOT(ISERROR(MATCH(A1, 'Sheet2'!A:A,FALSE)))
For Excel 2007 and prior, you cannot use conditional formatting rules that reference other worksheets. In this case, use the helper column and set your formatting rule in column A like:
=B1="Duplicate"
This screenshot is from the 2010 UI, but the same rule should work in 2007/2003 Excel.
JSON order mixed up
from lemiorhan example i can solve with just change some line of lemiorhan's code use:
JSONObject json = new JSONObject(obj);
instead of this:
JSONObject json = (JSONObject) obj
so in my test code is :
Map item_sub2 = new LinkedHashMap();
item_sub2.put("name", "flare");
item_sub2.put("val1", "val1");
item_sub2.put("val2", "val2");
item_sub2.put("size",102);
JSONArray itemarray2 = new JSONArray();
itemarray2.add(item_sub2);
itemarray2.add(item_sub2);//just for test
itemarray2.add(item_sub2);//just for test
Map item_sub1 = new LinkedHashMap();
item_sub1.put("name", "flare");
item_sub1.put("val1", "val1");
item_sub1.put("val2", "val2");
item_sub1.put("children",itemarray2);
JSONArray itemarray = new JSONArray();
itemarray.add(item_sub1);
itemarray.add(item_sub1);//just for test
itemarray.add(item_sub1);//just for test
Map item_root = new LinkedHashMap();
item_root.put("name", "flare");
item_root.put("children",itemarray);
JSONObject json = new JSONObject(item_root);
System.out.println(json.toJSONString());
SQLException: No suitable driver found for jdbc:derby://localhost:1527
You may be missing to start the Derby server. Once a derby server starts, it starts listening to default port 1527.
Start script is located as below:
Windows:
<DERBY_INSTALLATION_DIRECTORY>/bin/startNetworkServer.bat
Linux:
<DERBY_INSTALLATION_DIRECTORY>/bin/startNetworkServer
What's the difference between tilde(~) and caret(^) in package.json?
Hat matching may be considered "broken" because it wont update ^0.1.2 to 0.2.0. When the software is emerging use 0.x.y versions and hat matching will only match the last varying digit (y). This is done on purpose. The reason is that while the software is evolving the API changes rapidly: one day you have these methods and the other day you have those methods and the old ones are gone. If you don't want to break the code for people who already are using your library you go and increment the major version: e.g. 1.0.0 -> 2.0.0 -> 3.0.0. So, by the time your software is finally 100% done and full-featured it will be like version 11.0.0 and that doesn't look very meaningful, and actually looks confusing. If you were, on the other hand, using 0.1.x -> 0.2.x -> 0.3.x versions then by the time the software is finally 100% done and full-featured it is released as version 1.0.0 and it means "This release is a long-term service one, you can proceed and use this version of the library in your production code, and the author won't change everything tomorrow, or next month, and he won't abandon the package".
The rule is: use 0.x.y versioning when your software hasn't yet matured and release it with incrementing the middle digit when your public API changes (therefore people having ^0.1.0 won't get 0.2.0 update and it won't break their code). Then, when the software matures, release it under 1.0.0 and increment the leftmost digit each time your public API changes (therefore people having ^1.0.0 won't get 2.0.0 update and it won't break their code).
Given a version number MAJOR.MINOR.PATCH, increment the:
MAJOR version when you make incompatible API changes,
MINOR version when you add functionality in a backwards-compatible manner, and
PATCH version when you make backwards-compatible bug fixes.
Hiding the scroll bar on an HTML page
My HTML is like this:
<div class="container">
<div class="content">
</div>
</div>
Add this to your div where you want to hide the scrollbar:
.content {
position: absolute;
right: -100px;
overflow-y: auto;
overflow-x: hidden;
height: 75%; /* This can be any value of your choice */
}
And add this to the container
.container {
overflow-x: hidden;
max-height: 100%;
max-width: 100%;
}
How do I auto-hide placeholder text upon focus using css or jquery?
Pure CSS Solution (no JS required)
Building on @Hexodus and @Casey Chu's answers, here is an updated and cross-browser solution that leverages CSS opacity and transitions to fade the placeholder text out. It works for any element that can use placeholders, including textarea and input tags.
::-webkit-input-placeholder { opacity: 1; -webkit-transition: opacity .5s; transition: opacity .5s; } /* Chrome <=56, Safari < 10 */
:-moz-placeholder { opacity: 1; -moz-transition: opacity .5s; transition: opacity .5s; } /* FF 4-18 */
::-moz-placeholder { opacity: 1; -moz-transition: opacity .5s; transition: opacity .5s; } /* FF 19-51 */
:-ms-input-placeholder { opacity: 1; -ms-transition: opacity .5s; transition: opacity .5s; } /* IE 10+ */
::placeholder { opacity: 1; transition: opacity .5s; } /* Modern Browsers */
*:focus::-webkit-input-placeholder { opacity: 0; } /* Chrome <=56, Safari < 10 */
*:focus:-moz-placeholder { opacity: 0; } /* FF 4-18 */
*:focus::-moz-placeholder { opacity: 0; } /* FF 19-50 */
*:focus:-ms-input-placeholder { opacity: 0; } /* IE 10+ */
*:focus::placeholder { opacity: 0; } /* Modern Browsers */<div>
<div><label for="a">Input:</label></div>
<input id="a" type="text" placeholder="CSS native fade out this placeholder text on click/focus" size="60">
</div>
<br>
<div>
<div><label for="b">Textarea:</label></div>
<textarea id="b" placeholder="CSS native fade out this placeholder text on click/focus" rows="3"></textarea>
</div>Revisions
- Edit 1 (2017): Updated to support modern browsers.
- Edit 2 (2020): Added the runnable Stack Snippet.
How to center form in bootstrap 3
Many people advise using col- and col-offset- classes, but it doesn't work right for me, it centers the form only for a certain screen size, but if you change it, the markup slides out.
I found two ways to align form:
Use a custom CSS:
<div class=".center">
<form>
</form>
</div>
.center {
margin: 0 auto;
width: 100%;
}
form {
margin: 0 auto;
width: 500px; /*find your value*/
text-align: center;
}
OR just copy a CSS class "justify-content-center" from bootstrap 4, it's very short:
.justify-content-center {
-ms-flex-pack: center !important;
justify-content: center !important;
}
And then use it:
<div class="container">
<div class="row">
<div class="form-inline justify-content-center">
</div>
</div>
</div>
How to remove first 10 characters from a string?
You Can Remove Char using below Line ,
:- First check That String has enough char to remove ,like
string temp="Hello Stack overflow";
if(temp.Length>10)
{
string textIWant = temp.Remove(0, 10);
}
Setting background-image using jQuery CSS property
You probably want this (to make it like a normal CSS background-image declaration):
$('myObject').css('background-image', 'url(' + imageUrl + ')');
Convert interface{} to int
I whole-heartedly agree with zzzz's type assertion answer and I strongly prefer that way over others. That said, here's what I've had to do when the preferred method has not worked... (long story related to cross-serialization of data). You can even chain this into a switch statement with case errInt == nil and similar expressions.
package main
import "fmt"
import "strconv"
func main() {
var v interface{}
v = "4"
i, errInt := strconv.ParseInt(v.(string), 10, 64)
if errInt == nil {
fmt.Printf("%d is a int", i)
/* do what you wish with "i" here */
}
}
Like I said above, try type assertion first before trying this way.
Pretty-Print JSON Data to a File using Python
You can parse the JSON, then output it again with indents like this:
import json
mydata = json.loads(output)
print json.dumps(mydata, indent=4)
See http://docs.python.org/library/json.html for more info.
How to set DataGrid's row Background, based on a property value using data bindings
Use a DataTrigger:
<DataGrid ItemsSource="{Binding YourItemsSource}">
<DataGrid.RowStyle>
<Style TargetType="DataGridRow">
<Style.Triggers>
<DataTrigger Binding="{Binding State}" Value="State1">
<Setter Property="Background" Value="Red"></Setter>
</DataTrigger>
<DataTrigger Binding="{Binding State}" Value="State2">
<Setter Property="Background" Value="Green"></Setter>
</DataTrigger>
</Style.Triggers>
</Style>
</DataGrid.RowStyle>
</DataGrid>
Swift Modal View Controller with transparent background
You can do it like this:
In your main view controller:
func showModal() {
let modalViewController = ModalViewController()
modalViewController.modalPresentationStyle = .overCurrentContext
presentViewController(modalViewController, animated: true, completion: nil)
}
In your modal view controller:
class ModalViewController: UIViewController {
override func viewDidLoad() {
view.backgroundColor = UIColor.clearColor()
view.opaque = false
}
}
If you are working with a storyboard:
Just add a Storyboard Segue with Kind set to Present Modally to your modal view controller and on this view controller set the following values:
- Background = Clear Color
- Drawing = Uncheck the Opaque checkbox
- Presentation = Over Current Context
As Crashalot pointed out in his comment: Make sure the segue only uses Default for both Presentation and Transition. Using Current Context for Presentation makes the modal turn black instead of remaining transparent.
Java 8 Distinct by property
Another solution, using Set. May not be the ideal solution, but it works
Set<String> set = new HashSet<>(persons.size());
persons.stream().filter(p -> set.add(p.getName())).collect(Collectors.toList());
Or if you can modify the original list, you can use removeIf method
persons.removeIf(p -> !set.add(p.getName()));
Print PDF directly from JavaScript
https://github.com/mozilla/pdf.js/
for a live demo http://mozilla.github.io/pdf.js/
it's probably what you want, but I can't see the point of this since modern browsers include such functionality, also it will run terribly slow on low-powered devices like mobile devices that, by the way, have their own optimized plugins and apps.
How do I install SciPy on 64 bit Windows?
WinPython is an open-source distribution that has 64-bit NumPy and SciPy.
Ruby on Rails: Where to define global constants?
Try to keep all constant at one place, In my application I have created constants folder inside initializers as follows:
and I usually keep all constant in these files.
In your case you can create file under constants folder as colors_constant.rb
colors_constant.rb
Don't forgot to restart server
Count frequency of words in a list and sort by frequency
words = file("test.txt", "r").read().split() #read the words into a list.
uniqWords = sorted(set(words)) #remove duplicate words and sort
for word in uniqWords:
print words.count(word), word
Facebook database design?
Regarding the performance of a many-to-many table, if you have 2 32-bit ints linking user IDs, your basic data storage for 200,000,000 users averaging 200 friends apiece is just under 300GB.
Obviously, you would need some partitioning and indexing and you're not going to keep that in memory for all users.
Xcode : Adding a project as a build dependency
Xcode 10
- drag-n-drop a project into another project - is called
cross-project references[About] - add the added project as a build dependency - is called
Explicit dependency[About]
//Xcode 10
Build Phases -> Target Dependencies -> + Add items
//Xcode 11
Build Phases -> Dependencies -> + Add items
In Choose items to add: dialog you will see only targets from your project and the sub-project
How to read a file from jar in Java?
If you want to read that file from inside your application use:
InputStream input = getClass().getResourceAsStream("/classpath/to/my/file");
The path starts with "/", but that is not the path in your file-system, but in your classpath. So if your file is at the classpath "org.xml" and is called myxml.xml your path looks like "/org/xml/myxml.xml".
The InputStream reads the content of your file. You can wrap it into an Reader, if you want.
I hope that helps.
Submitting form and pass data to controller method of type FileStreamResult
When in doubt, follow MVC conventions.
Create a viewModel if you haven't already that contains a property for JobID
public class Model
{
public string JobId {get; set;}
public IEnumerable<MyCurrentModel> myCurrentModel { get; set; }
//...any other properties you may need
}
Strongly type your view
@model Fully.Qualified.Path.To.Model
Add a hidden field for JobId to the form
using (@Html.BeginForm("myMethod", "Home", FormMethod.Post))
{
//...
@Html.HiddenFor(m => m.JobId)
}
And accept the model as the parameter in your controller action:
[HttpPost]
public FileStreamResult myMethod(Model model)
{
sting str = model.JobId;
}
Importing json file in TypeScript
The import form and the module declaration need to agree about the shape of the module, about what it exports.
When you write (a suboptimal practice for importing JSON since TypeScript 2.9 when targeting compatible module formatssee note)
declare module "*.json" {
const value: any;
export default value;
}
You are stating that all modules that have a specifier ending in .json have a single export named default.
There are several ways you can correctly consume such a module including
import a from "a.json";
a.primaryMain
and
import * as a from "a.json";
a.default.primaryMain
and
import {default as a} from "a.json";
a.primaryMain
and
import a = require("a.json");
a.default.primaryMain
The first form is the best and the syntactic sugar it leverages is the very reason JavaScript has default exports.
However I mentioned the other forms to give you a hint about what's going wrong. Pay special attention to the last one. require gives you an object representing the module itself and not its exported bindings.
So why the error? Because you wrote
import a = require("a.json");
a.primaryMain
And yet there is no export named primaryMain declared by your "*.json".
All of this assumes that your module loader is providing the JSON as the default export as suggested by your original declaration.
Note: Since TypeScript 2.9, you can use the --resolveJsonModule compiler flag to have TypeScript analyze imported .json files and provide correct information regarding their shape obviating the need for a wildcard module declaration and validating the presence of the file. This is not supported for certain target module formats.
In Javascript/jQuery what does (e) mean?
e is the short var reference for event object which will be passed to event handlers.
The event object essentially has lot of interesting methods and properties that can be used in the event handlers.
In the example you have posted is a click handler which is a MouseEvent
$(<element selector>).click(function(e) {
// does something
alert(e.type); //will return you click
}
DEMO - Mouse Events DEMO uses e.which and e.type
Some useful references:
http://api.jquery.com/category/events/
http://www.quirksmode.org/js/events_properties.html
http://www.javascriptkit.com/jsref/event.shtml
UndefinedMetricWarning: F-score is ill-defined and being set to 0.0 in labels with no predicted samples
As I have noticed this error occurs under two circumstances,
- If you have used train_test_split() to split your data, you have to make sure that you reset the index of the data (specially when taken using a pandas series object): y_train, y_test indices should be resetted. The problem is when you try to use one of the scores from sklearn.metrics such as; precision_score, this will try to match the shuffled indices of the y_test that you got from train_test_split().
so use, either np.array(y_test) for y_true in scores or y_test.reset_index(drop=True)
- Then again you can still have this error if your predicted 'True Positives' is 0, which is used for precision, recall and f1_scores. You can visualize this using a confusion_matrix. If the classification is multilabel and you set param: average='weighted'/micro/macro you will get an answer as long as the diagonal line in the matrix is not 0
Hope this helps.
Slick Carousel Uncaught TypeError: $(...).slick is not a function
You failed to load the slick.js file. Add this script file https://kenwheeler.github.io/slick/slick/slick.js.
I updated your JSFiddle by adding an external file on left sidebar External Resources. Then it doesn't report the error: $(...).slick is not a function.
Calling constructors in c++ without new
Quite simply, both lines create the object on the stack, rather than on the heap as 'new' does. The second line actually involves a second call to a copy constructor, so it should be avoided (it also needs to be corrected as indicated in the comments). You should use the stack for small objects as much as possible since it is faster, however if your objects are going to survive for longer than the stack frame, then it's clearly the wrong choice.
How to SUM parts of a column which have same text value in different column in the same row
A PivotTable might suit, though I am not quite certain of the layout of your data:
The bold numbers (one of each pair of duplicates) need not be shown as the field does not have to be subtotalled eg:
How to disable Excel's automatic cell reference change after copy/paste?
This macro does the whole job.
Sub Absolute_Reference_Copy_Paste()
'By changing "=" in formulas to "#" the content is no longer seen as a formula.
' C+S+e (my keyboard shortcut)
Dim Dummy As Range
Dim FirstSelection As Range
Dim SecondSelection As Range
Dim SheetFirst As Worksheet
Dim SheetSecond As Worksheet
On Error GoTo Whoa
Application.EnableEvents = False
' Set starting selection variable.
Set FirstSelection = Selection
Set SheetFirst = FirstSelection.Worksheet
' Reset the Find function so the scope of the search area is the current worksheet.
Set Dummy = Worksheets(1).Range("A1:A1").Find("Dummy", LookIn:=xlValues)
' Change "=" to "#" in selection.
Selection.Replace What:="=", Replacement:="#", LookAt:=xlPart, _
SearchOrder:=xlByRows, MatchCase:=False, SearchFormat:=False, ReplaceFormat:=False
' Select the area you want to paste the formulas; must be same size as original
selection and outside of the original selection.
Set SecondSelection = Application.InputBox("Select a range", "Obtain Range Object", Type:=8)
Set SheetSecond = SecondSelection.Worksheet
' Copy the original selection and paste it into the newly selected area. The active
selection remains FirstSelection.
FirstSelection.Copy SecondSelection
' Restore "=" in FirstSelection.
Selection.Replace What:="#", Replacement:="=", LookAt:=xlPart, _
SearchOrder:=xlByRows, MatchCase:=False, SearchFormat:=False, ReplaceFormat:=False
' Select SecondSelection.
SheetSecond.Activate
SecondSelection.Select
' Restore "=" in SecondSelection.
Selection.Replace What:="#", Replacement:="=", LookAt:=xlPart, _
SearchOrder:=xlByRows, MatchCase:=False, SearchFormat:=False, ReplaceFormat:=False
' Return active selection to the original area: FirstSelection.
SheetFirst.Activate
FirstSelection.Select
Application.EnableEvents = True
Exit Sub
Whoa:
' If something goes wrong after "=" has been changed in FirstSelection, restore "=".
FirstSelection.Select
Selection.Replace What:="#", Replacement:="=", LookAt:=xlPart, _
SearchOrder:=xlByRows, MatchCase:=False, SearchFormat:=False, ReplaceFormat:=False
End Sub
Note that you must match the size and shape of the original selection when you make your new selection.
See :hover state in Chrome Developer Tools
In case it helps, this seems to be easier in the latest Chrome (47.0.2526.106):
Inspect element and then click on the three white dots in the left gutter:
Then choose the desired element state from this dropdown:
How to export table as CSV with headings on Postgresql?
instead of just table name, you can also write a query for getting only selected column data.
COPY (select id,name from tablename) TO 'filepath/aa.csv' DELIMITER ',' CSV HEADER;
with admin privilege
\COPY (select id,name from tablename) TO 'filepath/aa.csv' DELIMITER ',' CSV HEADER;
C# string reference type?
Actually it would have been the same for any object for that matter i.e. being a reference type and passing by reference are 2 different things in c#.
This would work, but that applies regardless of the type:
public static void TestI(ref string test)
Also about string being a reference type, its also a special one. Its designed to be immutable, so all of its methods won't modify the instance (they return a new one). It also has some extra things in it for performance.
TypeError: 'function' object is not subscriptable - Python
It is so simple, you have 2 objects with the same name and when you say: bank_holiday[month] python thinks you wanna run your function and got ERROR.
Just rename your array to bank_holidays <--- add a 's' at the end! like this:
bank_holidays= [1, 0, 1, 1, 2, 0, 0, 1, 0, 0, 0, 2] #gives the list of bank holidays in each month
def bank_holiday(month):
if month <1 or month > 12:
print("Error: Out of range")
return
print(bank_holidays[month-1],"holiday(s) in this month ")
bank_holiday(int(input("Which month would you like to check out: ")))
How can I dynamically add a directive in AngularJS?
In addition to perfect Riceball LEE's example of adding a new element-directive
newElement = $compile("<div my-directive='n'></div>")($scope)
$element.parent().append(newElement)
Adding a new attribute-directive to existed element could be done using this way:
Let's say you wish to add on-the-fly my-directive to the span element.
template: '<div>Hello <span>World</span></div>'
link: ($scope, $element, $attrs) ->
span = $element.find('span').clone()
span.attr('my-directive', 'my-directive')
span = $compile(span)($scope)
$element.find('span').replaceWith span
Hope that helps.
Update OpenSSL on OS X with Homebrew
If you're using Homebrew /usr/local/bin should already be at the front of $PATH or at least come before /usr/bin. If you now run brew link --force openssl in your terminal window, open a new one and run which openssl in it. It should now show openssl under /usr/local/bin.
Ant is using wrong java version
Run ant in verbose mode : ant -v and looks for clues.
How to set size for local image using knitr for markdown?
The knitr::include_graphics solution worked well for resizing the figures, but I was unable to figure out how to use it to produce side-by-side resized figures. I found this post useful for doing so.
Why shouldn't I use "Hungarian Notation"?
Hungarian is bad because it takes precious characters away from variable names in exchange for what, some type information?
First of all, in a strongly typed language, the compiler will warn you if you do any truly stupid.
Second, if you believe in good modularized code and don't do too much work in any 1 function, you're variables are probable declared just above the code they are used in anyway (so you have the type right there).
Third, if you prefix every pointer with p and every class with C, your really screwing up your nice modern IDE's ability to do intellisense (you know that feature where it guesses as you type what class name your typing and as soon as it gets it right you can hit enter and it completes it for you? well, if you prefix every class with C, you always have at least 1 extra letter to type)...
How to get PID of process I've just started within java program?
Since Java 9 class Process has new method long pid(), so it is as simple as
ProcessBuilder pb = new ProcessBuilder("cmd", "/c", "path");
try {
Process p = pb.start();
long pid = p.pid();
} catch (IOException ex) {
// ...
}
Comparing strings in C# with OR in an if statement
use if (testString.Equals(testString2)).
Best way to do multi-row insert in Oracle?
If you have the values that you want to insert in another table already, then you can Insert from a select statement.
INSERT INTO a_table (column_a, column_b) SELECT column_a, column_b FROM b_table;
Otherwise, you can list a bunch of single row insert statements and submit several queries in bulk to save the time for something that works in both Oracle and MySQL.
@Espo's solution is also a good one that will work in both Oracle and MySQL if your data isn't already in a table.
Create URL from a String
URL url = new URL(yourUrl, "/api/v1/status.xml");
According to the javadocs this constructor just appends whatever resource to the end of your domain, so you would want to create 2 urls:
URL domain = new URL("http://example.com");
URL url = new URL(domain + "/files/resource.xml");
Sources: http://docs.oracle.com/javase/6/docs/api/java/net/URL.html
Passing arguments to C# generic new() of templated type
If you simply want to initialise a member field or property with the constructor parameter, in C# >= 3 you can do it very easier:
public static string GetAllItems<T>(...) where T : InterfaceOrBaseClass, new()
{
...
List<T> tabListItems = new List<T>();
foreach (ListItem listItem in listCollection)
{
tabListItems.Add(new T{ BaseMemberItem = listItem }); // No error, BaseMemberItem owns to InterfaceOrBaseClass.
}
...
}
This is the same thing Garry Shutler said, but I'd like to put an aditional note.
Of course you can use a property trick to do more stuff than just setting a field value. A property "set()" can trigger any processing needed to setup its related fields and any other need for the object itself, including a check to see if a full initialization is to take place before the object is used, simulating a full contruction (yes, it is an ugly workaround, but it overcomes M$'s new() limitation).
I can't be assure if it is a planned hole or an accidental side effect, but it works.
It is very funny how MS people adds new features to the language and seems to not do a full side effects analysis. The entire generic thing is a good evidence of this...
How do I install PIL/Pillow for Python 3.6?
For python version 2.x you can simply use
pip install pillow
But for python version 3.X you need to specify
(sudo) pip3 install pillow
when you enter pip in bash hit tab and you will see what options you have
Block direct access to a file over http but allow php script access
To prevent .ini files from web access put the following into apache2.conf
<Files ~ "\.ini$">
Order allow,deny
Deny from all
</Files>
Prevent Caching in ASP.NET MVC for specific actions using an attribute
You can use the built in cache attribute to prevent caching.
For .net Framework: [OutputCache(NoStore = true, Duration = 0)]
For .net Core: [ResponseCache(NoStore = true, Duration = 0)]
Be aware that it is impossible to force the browser to disable caching. The best you can do is provide suggestions that most browsers will honor, usually in the form of headers or meta tags. This decorator attribute will disable server caching and also add this header: Cache-Control: public, no-store, max-age=0. It does not add meta tags. If desired, those can be added manually in the view.
Additionally, JQuery and other client frameworks will attempt to trick the browser into not using it's cached version of a resource by adding stuff to the url, like a timestamp or GUID. This is effective in making the browser ask for the resource again but doesn't really prevent caching.
On a final note. You should be aware that resources can also be cached in between the server and client. ISP's, proxies, and other network devices also cache resources and they often use internal rules without looking at the actual resource. There isn't much you can do about these. The good news is that they typically cache for shorter time frames, like seconds or minutes.
git clone: Authentication failed for <URL>
I had the same issue when Cloning the repository via Bash/VS Code with "fatal:Authentication failed". I used SSH Key authentication instead to connect my repository following the article: [https://docs.microsoft.com/en-us/azure/devops/repos/git/use-ssh-keys-to-authenticate?view=azure-devops&tabs=current-page][1] I didn't get any errors after with any bash commands!
Android, getting resource ID from string?
You can use Resources.getIdentifier(), although you need to use the format for your string as you use it in your XML files, i.e. package:drawable/icon.
How to import an excel file in to a MySQL database
Fastest and simpliest way is to save XLS as ODS (open document spreasheet) and import it from PhpMyAdmin
How to remove "Server name" items from history of SQL Server Management Studio
From the Command Prompt (Start \ All Programs \ Accessories \ Command Prompt):
DEL /S SqlStudio.bin
How to disable EditText in Android
The XML editable property is deprecated since API LEVEL 15.
You should use now the inputType property with the value none.
But there is a bug that makes this functionality useless.
Here you can follow the issue status.
How to make a custom LinkedIn share button
You can customize the standard Linkedin button like this, after the page load:
$(".IN-widget span:first-of-type").css({
'border': '2px solid #DCDCDC',
'-webkit-border-radius': '3px',
'-moz-border-radius': '3px',
'border-radius': '3px'
});
Set Value of Input Using Javascript Function
I'm not using YUI, but in case it helps anyone else - my issue was that I had duplicate ID's on the page (was working inside a dialog and forgot about the page underneath).
Changing the ID so it was unique allowed me to use the methods listed in Sangeet's answer.
How to delete only the content of file in python
You can do this:
def deleteContent(pfile):
fn=pfile.name
pfile.close()
return open(fn,'w')
How to use hex color values
You can use it in swift 5
SWIFT 5
import UIKit
extension UIColor {
static func hexStringToUIColor (hex:String) -> UIColor {
var cString:String = hex.trimmingCharacters(in: .whitespacesAndNewlines).uppercased()
if (cString.hasPrefix("#")) {
cString.remove(at: cString.startIndex)
}
if ((cString.count) != 6) {
return UIColor.gray
}
var rgbValue:UInt32 = 0
Scanner(string: cString).scanHexInt32(&rgbValue)
return UIColor(
red: CGFloat((rgbValue & 0xFF0000) >> 16) / 255.0,
green: CGFloat((rgbValue & 0x00FF00) >> 8) / 255.0,
blue: CGFloat(rgbValue & 0x0000FF) / 255.0,
alpha: CGFloat(1.0)
)
}
}
Is there a Python equivalent of the C# null-coalescing operator?
Regarding answers by @Hugh Bothwell, @mortehu and @glglgl.
Setup Dataset for testing
import random
dataset = [random.randint(0,15) if random.random() > .6 else None for i in range(1000)]
Define implementations
def not_none(x, y=None):
if x is None:
return y
return x
def coalesce1(*arg):
return reduce(lambda x, y: x if x is not None else y, arg)
def coalesce2(*args):
return next((i for i in args if i is not None), None)
Make test function
def test_func(dataset, func):
default = 1
for i in dataset:
func(i, default)
Results on mac i7 @2.7Ghz using python 2.7
>>> %timeit test_func(dataset, not_none)
1000 loops, best of 3: 224 µs per loop
>>> %timeit test_func(dataset, coalesce1)
1000 loops, best of 3: 471 µs per loop
>>> %timeit test_func(dataset, coalesce2)
1000 loops, best of 3: 782 µs per loop
Clearly the not_none function answers the OP's question correctly and handles the "falsy" problem. It is also the fastest and easiest to read. If applying the logic in many places, it is clearly the best way to go.
If you have a problem where you want to find the 1st non-null value in a iterable, then @mortehu's response is the way to go. But it is a solution to a different problem than OP, although it can partially handle that case. It cannot take an iterable AND a default value. The last argument would be the default value returned, but then you wouldn't be passing in an iterable in that case as well as it isn't explicit that the last argument is a default to value.
You could then do below, but I'd still use not_null for the single value use case.
def coalesce(*args, **kwargs):
default = kwargs.get('default')
return next((a for a in arg if a is not None), default)
Attribute 'nowrap' is considered outdated. A newer construct is recommended. What is it?
Although there's CSS defines a text-wrap property, it's not supported by any major browser, but maybe vastly supported white-space property solves your problem.
receiver type *** for instance message is a forward declaration
Check if you imported the header files of classes that are throwing this error.
.gitignore and "The following untracked working tree files would be overwritten by checkout"
I was also facing a similar issue and i tried all the solutions posted above but it didn't work
The issue was caused when i renamed my onMusicUpdateListener.java to OnMusicUpdateListener.java in develop branch.
Now master had onMusicUpdateListener.java
and develop had the same file as OnMusicUpdateListener.java
Now whenever i switched to master it gave me an error
The following untracked working tree files would be overwritten by checkout
and then it aborted.
In order to solve this, i forcefully checked out master branch
and then renamed my onMusicUpdateListener.java to OnMusicUpdateListener.java, committed it and then merged it with develop branch.
Then i updated my develop branch by merging it into master and now everything is back to normal and problem is solved.
Extract a page from a pdf as a jpeg
from pdf2image import convert_from_path
import glob
pdf_dir = glob.glob(r'G:\personal\pdf\*') #your pdf folder path
img_dir = "G:\\personal\\img\\" #your dest img path
for pdf_ in pdf_dir:
pages = convert_from_path(pdf_, 500)
for page in pages:
page.save(img_dir+pdf_.split("\\")[-1][:-3]+"jpg", 'JPEG')
MongoDB: Server has startup warnings ''Access control is not enabled for the database''
Mongodb v3.4
You need to do the following to create a secure database:
Make sure the user starting the process has permissions and that the directories exist (/data/db in this case).
1) Start MongoDB without access control.
mongod --port 27017 --dbpath /data/db
2) Connect to the instance.
mongo --port 27017
3) Create the user administrator (in the admin authentication database).
use admin
db.createUser(
{
user: "myUserAdmin",
pwd: "abc123",
roles: [ { role: "userAdminAnyDatabase", db: "admin" } ]
}
)
4) Re-start the MongoDB instance with access control.
mongod --auth --port 27017 --dbpath /data/db
5) Connect and authenticate as the user administrator.
mongo --port 27017 -u "myUserAdmin" -p "abc123" --authenticationDatabase "admin"
6) Create additional users as needed for your deployment (e.g. in the test authentication database).
use test
db.createUser(
{
user: "myTester",
pwd: "xyz123",
roles: [ { role: "readWrite", db: "test" },
{ role: "read", db: "reporting" } ]
}
)
7) Connect and authenticate as myTester.
mongo --port 27017 -u "myTester" -p "xyz123" --authenticationDatabase "test"
I basically just explained the short version of the official docs here: https://docs.mongodb.com/master/tutorial/enable-authentication/
How can I get the day of a specific date with PHP
$date = strtotime('2016-2-3');
$date = date('l', $date);
var_dump($date)
(i added format 'l' so it will return full name of day)
How can I clone an SQL Server database on the same server in SQL Server 2008 Express?
If the database is not very large, you might look at the 'Script Database' commands in SQL Server Management Studio Express, which are in a context menu off the database item itself in the explorer.
You can choose what all to script; you want the objects and the data, of course. You will then save the entire script to a single file. Then you can use that file to re-create the database; just make sure the USE command at the top is set to the proper database.
PowerShell : retrieve JSON object by field value
Hows about this:
$json=Get-Content -Raw -Path 'my.json' | Out-String | ConvertFrom-Json
$foo="TheVariableYourUsingToSelectSomething"
$json.SomePathYouKnow.psobject.properties.Where({$_.name -eq $foo}).value
which would select from json structured
{"SomePathYouKnow":{"TheVariableYourUsingToSelectSomething": "Tada!"}
This is based on this accessing values in powershell SO question . Isn't powershell fabulous!