Variable not accessible when initialized outside function
To define a global variable which is based off a DOM element a few things must be checked. First, if the code is in the <head> section, then the DOM will not loaded on execution. In this case, an event handler must be placed in order to set the variable after the DOM has been loaded, like this:
var systemStatus;
window.onload = function(){ systemStatus = document.getElementById("system_status"); };
However, if this script is inline in the page as the DOM loads, then it can be done as long as the DOM element in question has loaded above where the script is located. This is because javascript executes synchronously. This would be valid:
<div id="system_status"></div>
<script type="text/javascript">
var systemStatus = document.getElementById("system_status");
</script>
As a result of the latter example, most pages which run scripts in the body save them until the very end of the document. This will allow the page to load, and then the javascript to execute which in most cases causes a visually faster rendering of the DOM.
What is the difference between partitioning and bucketing a table in Hive ?
The difference is bucketing divides the files by Column Name, and partitioning divides the files under By a particular value inside table
Hopefully I defined it correctly
DataTables: Uncaught TypeError: Cannot read property 'defaults' of undefined
I got the same error, I'm using laravel 5.4 with webpack, here package.json before:
{
...
...
"devDependencies": {
"jquery": "^1.12.4",
...
...
},
"dependencies": {
"datatables.net": "^2.1.1",
...
...
}
}
I had to move jquery and datatables.net npm packages under one of these "dependencies": {} or "devDependencies": {} in package.json and the error disappeared, after:
{
...
...
"devDependencies": {
"jquery": "^1.12.4",
"datatables.net": "^2.1.1",
...
...
}
}
I hope that helps!
Angular HttpPromise: difference between `success`/`error` methods and `then`'s arguments
.then() is chainable and will wait for previous .then() to resolve.
.success() and .error() can be chained, but they will all fire at once (so not much point to that)
.success() and .error() are just nice for simple calls (easy makers):
$http.post('/getUser').success(function(user){
...
})
so you don't have to type this:
$http.post('getUser').then(function(response){
var user = response.data;
})
But generally i handler all errors with .catch():
$http.get(...)
.then(function(response){
// successHandler
// do some stuff
return $http.get('/somethingelse') // get more data
})
.then(anotherSuccessHandler)
.catch(errorHandler)
If you need to support <= IE8 then write your .catch() and .finally() like this (reserved methods in IE):
.then(successHandler)
['catch'](errorHandler)
Working Examples:
Here's something I wrote in more codey format to refresh my memory on how it all plays out with handling errors etc:
Use of Finalize/Dispose method in C#
Pattern from msdn
public class BaseResource: IDisposable
{
private IntPtr handle;
private Component Components;
private bool disposed = false;
public BaseResource()
{
}
public void Dispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
protected virtual void Dispose(bool disposing)
{
if(!this.disposed)
{
if(disposing)
{
Components.Dispose();
}
CloseHandle(handle);
handle = IntPtr.Zero;
}
disposed = true;
}
~BaseResource()
{ Dispose(false);
}
public void DoSomething()
{
if(this.disposed)
{
throw new ObjectDisposedException();
}
}
}
public class MyResourceWrapper: BaseResource
{
private ManagedResource addedManaged;
private NativeResource addedNative;
private bool disposed = false;
public MyResourceWrapper()
{
}
protected override void Dispose(bool disposing)
{
if(!this.disposed)
{
try
{
if(disposing)
{
addedManaged.Dispose();
}
CloseHandle(addedNative);
this.disposed = true;
}
finally
{
base.Dispose(disposing);
}
}
}
}
a tag as a submit button?
This is an improve of @ComFreek ans:
<form id="myform">
<!-- form elements -->
<a href="javascript:;" onclick="document.getElementById('myform').submit()">Submit</a>
</form>
So the will not trigger action and reload your page. Specially if your are developing with a framework with SPA.
How do I UPDATE from a SELECT in SQL Server?
The other way is to use a derived table:
UPDATE t
SET t.col1 = a.col1
,t.col2 = a.col2
FROM (
SELECT id, col1, col2 FROM @tbl2) a
INNER JOIN @tbl1 t ON t.id = a.id
Sample data
DECLARE @tbl1 TABLE (id INT, col1 VARCHAR(10), col2 VARCHAR(10))
DECLARE @tbl2 TABLE (id INT, col1 VARCHAR(10), col2 VARCHAR(10))
INSERT @tbl1 SELECT 1, 'a', 'b' UNION SELECT 2, 'b', 'c'
INSERT @tbl2 SELECT 1, '1', '2' UNION SELECT 2, '3', '4'
UPDATE t
SET t.col1 = a.col1
,t.col2 = a.col2
FROM (
SELECT id, col1, col2 FROM @tbl2) a
INNER JOIN @tbl1 t ON t.id = a.id
SELECT * FROM @tbl1
SELECT * FROM @tbl2
Changing route doesn't scroll to top in the new page
I found this solution. If you go to a new view the function gets executed.
var app = angular.module('hoofdModule', ['ngRoute']);
app.controller('indexController', function ($scope, $window) {
$scope.$on('$viewContentLoaded', function () {
$window.scrollTo(0, 0);
});
});
How to check if a folder exists
Generate a file from the string of your folder directory
String path="Folder directory";
File file = new File(path);
and use method exist.
If you want to generate the folder you sould use mkdir()
if (!file.exists()) {
System.out.print("No Folder");
file.mkdir();
System.out.print("Folder created");
}
Building a complete online payment gateway like Paypal
What you're talking about is becoming a payment service provider. I have been there and done that. It was a lot easier about 10 years ago than it is now, but if you have a phenomenal amount of time, money and patience available, it is still possible.
You will need to contact an acquiring bank. You didnt say what region of the world you are in, but by this I dont mean a local bank branch. Each major bank will generally have a separate card acquiring arm. So here in the UK we have (eg) Natwest bank, which uses Streamline (or Worldpay) as its acquiring arm. In total even though we have scores of major banks, they all end up using one of five or so card acquirers.
Happily, all UK card acquirers use a standard protocol for communication of authorisation requests, and end of day settlement. You will find minor quirks where some acquiring banks support some features and have slightly different syntax, but the differences are fairly minor. The UK standards are published by the Association for Payment Clearing Services (APACS) (which is now known as the UKPA). The standards are still commonly referred to as APACS 30 (authorization) and APACS 29 (settlement), but are now formally known as APACS 70 (books 1 through 7).
Although the APACS standard is widely supported across the UK (Amex and Discover accept messages in this format too) it is not used in other countries - each country has it's own - for example: Carte Bancaire in France, CartaSi in Italy, Sistema 4B in Spain, Dankort in Denmark etc. An effort is under way to unify the protocols across Europe - see EPAS.org
Communicating with the acquiring bank can be done a number of ways. Again though, it will depend on your region. In the UK (and most of Europe) we have one communications gateway that provides connectivity to all the major acquirers, they are called TNS and there are dozens of ways of communicating through them to the acquiring bank, from dialup 9600 baud modems, ISDN, HTTPS, VPN or dedicated line. Ultimately the authorisation request will be converted to X25 protocol, which is the protocol used by these acquiring banks when communicating with each other.
In summary then: it all depends on your region.
- Contact a major bank and try to get through to their card acquiring arm.
- Explain that you're setting up as a payment service provider, and request details on comms format for authorization requests and end of day settlement files
- Set up a test merchant account and develop auth/settlement software and go through the accreditation process. Most acquirers help you through this process for free, but when you want to register as an accredited PSP some will request a fee.
- you will need to comply with some regulations too, for example you may need to register as a payment institution
Once you are registered and accredited you'll then be able to accept customers and set up merchant accounts on behalf of the bank/s you're accredited against (bearing in mind that each acquirer will generally support multiple banks). Rinse and repeat with other acquirers as you see necessary.
Beyond that you have lots of other issues, mainly dealing with PCI-DSS. Thats a whole other topic and there are already some q&a's on this site regarding that. Like I say, its a phenomenal undertaking - most likely a multi-year project even for a reasonably sized team, but its certainly possible.
HTML Mobile -forcing the soft keyboard to hide
I am fighting the soft keyboard on the Honeywell Dolphin 70e with Android 4.0.3. I don't need the keyboard because the input comes from the builtin barcode reader through the 'scanwedge', set to generate key events.
What I found was that the trick described in the earlier answers of:
input.blur();
input.focus();
works, but only once, right at page initialization. It puts the focus in the input element without showing the soft keyboard. It does NOT work later, e.g. after a TAB character in the suffix of the barcode causes the onblur or oninput event on the input element.
To read and process lots of barcodes, you may use a different postfix than TAB (9), e.g. 8, which is not interpreted by the browser. In the input.keydown event, use e.keyCode == 8 to detect a complete barcode to be processed.
This way, you initialize the page with focus in the input element, with keyboard hidden, all barcodes go to the input element, and the focus never leaves that element. Of course, the page cannot have other input elements (like buttons), because then you will not be able to return to the barcode input element with the soft keyboard hidden.
Perhaps reloading the page after a button click may be able to hide the keyboard. So use ajax for fast processing of barcodes, and use a regular asp.net button with PostBack to process a button click and reload the page to return focus to the barcode input with the keyboard hidden.
Angular is automatically adding 'ng-invalid' class on 'required' fields
Try to add the class for validation dynamically, when the form has been submitted or the field is invalid. Use the form name and add the 'name' attribute to the input. Example with Bootstrap:
<div class="form-group" ng-class="{'has-error': myForm.$submitted && (myForm.username.$invalid && !myForm.username.$pristine)}">
<label class="col-sm-2 control-label" for="username">Username*</label>
<div class="col-sm-10 col-md-9">
<input ng-model="data.username" id="username" name="username" type="text" class="form-control input-md" required>
</div>
</div>
It is also important, that your form has the ng-submit="" attribute:
<form name="myForm" ng-submit="checkSubmit()" novalidate>
<!-- input fields here -->
....
<button type="submit">Submit</button>
</form>
You can also add an optional function for validation to the form:
//within your controller (some extras...)
$scope.checkSubmit = function () {
if ($scope.myForm.$valid) {
alert('All good...'); //next step!
}
else {
alert('Not all fields valid! Do something...');
}
}
Now, when you load your app the class 'has-error' will only be added when the form is submitted or the field has been touched.
Instead of:
!myForm.username.$pristine
You could also use:
myForm.username.$dirty
Using grep to search for a string that has a dot in it
You need to escape the . as "0\.49".
A . is a regex meta-character to match any character(except newline). To match a literal period, you need to escape it.
How to hide only the Close (x) button?
Well, you can hide it, by removing the entire system menu:
private const int WS_SYSMENU = 0x80000;
protected override CreateParams CreateParams
{
get
{
CreateParams cp = base.CreateParams;
cp.Style &= ~WS_SYSMENU;
return cp;
}
}
Of course, doing so removes the minimize and maximize buttons.
If you keep the system menu but remove the close item then the close button remains but is disabled.
The final alternative is to paint the non-client area yourself. That's pretty hard to get right.
How to resolve a Java Rounding Double issue
See responses to this question. Essentially what you are seeing is a natural consequence of using floating point arithmetic.
You could pick some arbitrary precision (significant digits of your inputs?) and round your result to it, if you feel comfortable doing that.
Deny access to one specific folder in .htaccess
Creating index.php, index.html, index.htm is not secure. Becuse, anyone can get access on your files within specified directory by guessing files name. E.g.: http://yoursite.com/includes/file.dat So, recommended method is creating a .htaccess file to deny all visitors ;). Have fun !!
How to see docker image contents
The accepted answer here is problematic, because there is no guarantee that an image will have any sort of interactive shell. For example, the drone/drone image contains on a single command /drone, and it has an ENTRYPOINT as well, so this will fail:
$ docker run -it drone/drone sh
FATA[0000] DRONE_HOST is not properly configured
And this will fail:
$ docker run --rm -it --entrypoint sh drone/drone
docker: Error response from daemon: oci runtime error: container_linux.go:247: starting container process caused "exec: \"sh\": executable file not found in $PATH".
This is not an uncommon configuration; many minimal images contain only the binaries necessary to support the target service. Fortunately, there are mechanisms for exploring an image filesystem that do not depend on the contents of the image. The easiest is probably the docker export command, which will export a container filesystem as a tar archive. So, start a container (it does not matter if it fails or not):
$ docker run -it drone/drone sh
FATA[0000] DRONE_HOST is not properly configured
Then use docker export to export the filesystem to tar:
$ docker export $(docker ps -lq) | tar tf -
The docker ps -lq there means "give me the id of the most recent docker container". You could replace that with an explicit container name or id.
How to get the selected row values of DevExpress XtraGrid?
For VB.Net
CType(GridControl1.MainView, GridView).GetFocusedRow()
For C#
((GridView)gridControl1.MainView).GetFocusedRow();
example bind data by linq so use
Dim selRow As CUSTOMER = CType(GridControl1.MainView, GridView).GetFocusedRow()
call a static method inside a class?
This is a very late response, but adds some detail on the previous answers
When it comes to calling static methods in PHP from another static method on the same class, it is important to differentiate between self and the class name.
Take for instance this code:
class static_test_class {
public static function test() {
echo "Original class\n";
}
public static function run($use_self) {
if($use_self) {
self::test();
} else {
$class = get_called_class();
$class::test();
}
}
}
class extended_static_test_class extends static_test_class {
public static function test() {
echo "Extended class\n";
}
}
extended_static_test_class::run(true);
extended_static_test_class::run(false);
The output of this code is:
Original class
Extended class
This is because self refers to the class the code is in, rather than the class of the code it is being called from.
If you want to use a method defined on a class which inherits the original class, you need to use something like:
$class = get_called_class();
$class::function_name();
What's the easiest way to escape HTML in Python?
cgi.escape extended
This version improves cgi.escape. It also preserves whitespace and newlines. Returns a unicode string.
def escape_html(text):
"""escape strings for display in HTML"""
return cgi.escape(text, quote=True).\
replace(u'\n', u'<br />').\
replace(u'\t', u' ').\
replace(u' ', u' ')
for example
>>> escape_html('<foo>\nfoo\t"bar"')
u'<foo><br />foo "bar"'
A terminal command for a rooted Android to remount /System as read/write
I use this command:
mount -o rw,remount /system
How can I use Python to get the system hostname?
To get fully qualified hostname use socket.getfqdn()
import socket
print socket.getfqdn()
Java Byte Array to String to Byte Array
Can you not just send the bytes as bytes, or convert each byte to a character and send as a string? Doing it like you are will take up a minimum of 85 characters in the string, when you only have 11 bytes to send. You could create a string representation of the bytes, so it'd be "[B@405217f8", which can easily be converted to a bytes or bytearray object in Python. Failing that, you could represent them as a series of hexadecimal digits ("5b42403430353231376638") taking up 22 characters, which could be easily decoded on the Python side using binascii.unhexlify().
Import CSV file into SQL Server
Here's how I would solve it:
Just Save your CSV File as a XLS Sheet in excel(By Doing so, you wouldn't have to worry about delimitiers. Excel's spreadsheet format will be read as a table and imported directly into a SQL Table)
Import the File Using SSIS
Write a Custom Script in the import manager to omit/modify the data you're looking for.(Or run a master script to scrutinize the data you're looking to remove)
Good Luck.
Invoking modal window in AngularJS Bootstrap UI using JavaScript
Open modal windows with passing data to dialog
In case if someone interests to pass data to dialog:
app.controller('ModalCtrl', function($scope, $modal) {
$scope.name = 'theNameHasBeenPassed';
$scope.showModal = function() {
$scope.opts = {
backdrop: true,
backdropClick: true,
dialogFade: false,
keyboard: true,
templateUrl : 'modalContent.html',
controller : ModalInstanceCtrl,
resolve: {} // empty storage
};
$scope.opts.resolve.item = function() {
return angular.copy(
{name: $scope.name}
); // pass name to resolve storage
}
var modalInstance = $modal.open($scope.opts);
modalInstance.result.then(function(){
//on ok button press
},function(){
//on cancel button press
console.log("Modal Closed");
});
};
})
var ModalInstanceCtrl = function($scope, $modalInstance, $modal, item) {
$scope.item = item;
$scope.ok = function () {
$modalInstance.close();
};
$scope.cancel = function () {
$modalInstance.dismiss('cancel');
};
}
Demo Plunker
Selecting default item from Combobox C#
private void comboBox_Loaded(object sender, RoutedEventArgs e)
{
Combobox.selectedIndex= your index;
}
OR if you want to display some value after comparing into combobox
foreach (var item in comboBox.Items)
{
if (item.ToString().ToLower().Equals("your item in lower"))
{
comboBox.SelectedValue = item;
}
}
I hope it will help, it works for me.
Copy-item Files in Folders and subfolders in the same directory structure of source server using PowerShell
This can be done just using Copy-Item. No need to use Get-Childitem. I think you are just overthinking it.
Copy-Item -Path C:\MyFolder -Destination \\Server\MyFolder -recurse -Force
I just tested it and it worked for me.
edit: included suggestion from the comments
# Add wildcard to source folder to ensure consistent behavior
Copy-Item -Path $sourceFolder\* -Destination $targetFolder -Recurse
Getting strings recognized as variable names in R
If you want to use a string as a variable name, you can use assign:
var1="string_name"
assign(var1, c(5,4,5,6,7))
string_name
[1] 5 4 5 6 7
Setting the correct PATH for Eclipse
I am using Windows 8.1 environment. I had the same problem while running my first java program after installing Eclipse recently. I had installed java on d drive at d:\java. But Eclipse was looking at the default installation c:\programfiles\java. I did the following:
Modified my eclipse.ini file and added the following after open:
-vm d:\java\jdk1.8.0_161\binWhile creating the java program I have to unselect default build path and then select d:\java.
After this, the program ran well and got the hello world to work.
Validate email with a regex in jQuery
function mailValidation(val) {
var expr = /^([\w-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$/;
if (!expr.test(val)) {
$('#errEmail').text('Please enter valid email.');
}
else {
$('#errEmail').hide();
}
}
No 'Access-Control-Allow-Origin' header is present on the requested resource - Resteasy
Seems your resource POSTmethod won't get hit as @peeskillet mention. Most probably your ~POST~ request won't work, because it may not be a simple request. The only simple requests are GET, HEAD or POST and request headers are simple(The only simple headers are Accept, Accept-Language, Content-Language, Content-Type= application/x-www-form-urlencoded, multipart/form-data, text/plain).
Since in you already add Access-Control-Allow-Origin headers to your Response, you can add new OPTIONS method to your resource class.
@OPTIONS
@Path("{path : .*}")
public Response options() {
return Response.ok("")
.header("Access-Control-Allow-Origin", "*")
.header("Access-Control-Allow-Headers", "origin, content-type, accept, authorization")
.header("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, OPTIONS, HEAD")
.header("Access-Control-Max-Age", "2000")
.build();
}
Display image at 50% of its "native" size
Set the image to be the background of a div, then set the background size to be half the width of the image.
<div class="myimage"></div>
Then in your css, if your image is 300px x 200px:
.myimage {
background: url('images/myimage.png') no-repeat;
background-size:150px;
width:150px;
height:100px;
}
Difference between save and saveAndFlush in Spring data jpa
Depending on the hibernate flush mode that you are using (AUTO is the default) save may or may not write your changes to the DB straight away. When you call saveAndFlush you are enforcing the synchronization of your model state with the DB.
If you use flush mode AUTO and you are using your application to first save and then select the data again, you will not see a difference in bahvior between save() and saveAndFlush() because the select triggers a flush first. See the documention.
Android: remove left margin from actionbar's custom layout
If you check the documentation of toolbar, by default it has style defined and there is an item contentInsetStart.
<item name="contentInsetStart">16dp</item>
If you want to override this padding then it can be done in two ways.
1.Override the style and add your own style with contentInsetStart and contentInsetEnd values
<style name="MyActionBar" parent="Widget.AppCompat.ActionBar">
<item name="contentInsetStart">0dp</item>
<item name="contentInsetEnd">0dp</item>
</style>
2.In XML you can directly define the contentInsetStart and contentInsetEnd values
<androidx.appcompat.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
app:contentInsetLeft="0dp"
app:contentInsetStart="0dp"
android:layout_height="?attr/actionBarSize">
<!--Add your views here-->
</androidx.appcompat.widget.Toolbar>
What's in an Eclipse .classpath/.project file?
This eclipse documentation has details on the markups in .project file: The project description file
It describes the .project file as:
When a project is created in the workspace, a project description file is automatically generated that describes the project. The purpose of this file is to make the project self-describing, so that a project that is zipped up or released to a server can be correctly recreated in another workspace. This file is always called ".project"
How do I install cygwin components from the command line?
There exist some scripts, which can be used as simple package managers for Cygwin. But it’s important to know, that they always will be quite limited, because of...ehm...Windows.
Installing or removing packages is fine, each package manager for Cygwin can do that. But updating is a pain since Windows doesn’t allow you to overwrite an executable, which is currently running. So you can’t update e.g. Cygwin DLL or any package which contains the currently running executable from the Cygwin itself. There is also this note on the Cygwin Installation page:
"The basic reason for not having a more full-featured package manager is that such a program would need full access to all of Cygwin’s POSIX functionality. That is, however, difficult to provide in a Cygwin-free environment, such as exists on first installation. Additionally, Windows does not easily allow overwriting of in-use executables so installing a new version of the Cygwin DLL while a package manager is using the DLL is problematic."
Cygwin’s setup uses Windows registry to overwrite executables which are in use
and this method requires a reboot of Windows. Therefore, it’s better to close
all Cygwin processes before updating packages, so you don’t have to reboot
your computer to actually apply the changes. Installation of a new package
should be completely without any hassles. I don’t think any of package managers
except of Cygwin’s setup.exe implements any method to overwrite files in use,
so it would simply fail if it cannot overwrite them.
Some package managers for Cygwin:
apt-cyg
Update: the repository was disabled recently due to copyright issues (DMCA takedown). It looks like the owner of the repository issued the DMCA takedown on his own repository and created a new project called Sage (see bellow).
The best one for me. Simply because it’s one of the most recent. It doesn’t use Cygwin’s setup.exe, it rather re-implements, what setup.exe does. It works correctly for both platforms - x86 as well as x86_64. There are a lot of forks with more or less additional features. For example, the kou1okada fork is one of the improved versions, which is really great.
apt-cyg is just a shell script, there is no installation. Just download it (or clone the repository), make it executable and copy it somewhere to the PATH:
chmod +x apt-cyg # set executable bit
mv apt-cyg /usr/local/bin # move somewhere to PATH
# ...and use it:
apt-cyg install vim
There is also bunch of forks with different features.
sage
Another package manager implemented as a shell script. I didn't try it but it actually looks good.
It can search for packages in a repository, list packages in a category, check dependencies, list package files, and more. It has features which other package managers don't have.
cyg-apt
Fork of abandoned original cyg-apt with improvements and bugfixes. It has quite a lot of features and it's implemented in Python. Installation is made using make.
Chocolatey’s cyg-get
If you used Chocolatey to install Cygwin, you can install the package cyg-get, which is actually a simple wrapper around Cygwin’s setup.exe written in PowerShell.
Cygwin’s setup.exe
It also has a command line mode. Moreover, it allows you to upgrade all installed packages at once (as apt-get upgrade does on Debian based Linux).
Example use:
setup-x86_64.exe -q --packages=bash,vim
You can create an alias for easier use, for example:
alias cyg-get="/cygdrive/d/path/to/cygwin/setup-x86_64.exe -q -P"
Then you can, for example, install Vim package with:
cyg-get vim
Redirect to a page/URL after alert button is pressed
if (window.confirm('Really go to another page?'))
{
alert('message');
window.location = '/some/url';
}
else
{
die();
}
Convert python datetime to epoch with strftime
I had serious issues with Timezones and such. The way Python handles all that happen to be pretty confusing (to me). Things seem to be working fine using the calendar module (see links 1, 2, 3 and 4).
>>> import datetime
>>> import calendar
>>> aprilFirst=datetime.datetime(2012, 04, 01, 0, 0)
>>> calendar.timegm(aprilFirst.timetuple())
1333238400
How to apply Hovering on html area tag?
What I did was to create a canvas element that I then position in front of the image map. Then, whenever an area is moused-over, I call a func that gets the coord string for that shape and the shape-type. If it's a poly I use the coords to draw an outline on the canvas. If it's a rect I draw a rect outline. You could easily add code to deal with circles.
You could also set the opacity of the canvas to less than 100% before filling the poly/rect/circle. You could also change the reliance on a global for the canvas's context - this would mean you could deal with more than 1 image-map on the same page.
<!DOCTYPE html>
<html>
<head>
<script>
// stores the device context of the canvas we use to draw the outlines
// initialized in myInit, used in myHover and myLeave
var hdc;
// shorthand func
function byId(e){return document.getElementById(e);}
// takes a string that contains coords eg - "227,307,261,309, 339,354, 328,371, 240,331"
// draws a line from each co-ord pair to the next - assumes starting point needs to be repeated as ending point.
function drawPoly(coOrdStr)
{
var mCoords = coOrdStr.split(',');
var i, n;
n = mCoords.length;
hdc.beginPath();
hdc.moveTo(mCoords[0], mCoords[1]);
for (i=2; i<n; i+=2)
{
hdc.lineTo(mCoords[i], mCoords[i+1]);
}
hdc.lineTo(mCoords[0], mCoords[1]);
hdc.stroke();
}
function drawRect(coOrdStr)
{
var mCoords = coOrdStr.split(',');
var top, left, bot, right;
left = mCoords[0];
top = mCoords[1];
right = mCoords[2];
bot = mCoords[3];
hdc.strokeRect(left,top,right-left,bot-top);
}
function myHover(element)
{
var hoveredElement = element;
var coordStr = element.getAttribute('coords');
var areaType = element.getAttribute('shape');
switch (areaType)
{
case 'polygon':
case 'poly':
drawPoly(coordStr);
break;
case 'rect':
drawRect(coordStr);
}
}
function myLeave()
{
var canvas = byId('myCanvas');
hdc.clearRect(0, 0, canvas.width, canvas.height);
}
function myInit()
{
// get the target image
var img = byId('img-imgmap201293016112');
var x,y, w,h;
// get it's position and width+height
x = img.offsetLeft;
y = img.offsetTop;
w = img.clientWidth;
h = img.clientHeight;
// move the canvas, so it's contained by the same parent as the image
var imgParent = img.parentNode;
var can = byId('myCanvas');
imgParent.appendChild(can);
// place the canvas in front of the image
can.style.zIndex = 1;
// position it over the image
can.style.left = x+'px';
can.style.top = y+'px';
// make same size as the image
can.setAttribute('width', w+'px');
can.setAttribute('height', h+'px');
// get it's context
hdc = can.getContext('2d');
// set the 'default' values for the colour/width of fill/stroke operations
hdc.fillStyle = 'red';
hdc.strokeStyle = 'red';
hdc.lineWidth = 2;
}
</script>
<style>
body
{
background-color: gray;
}
canvas
{
pointer-events: none; /* make the canvas transparent to the mouse - needed since canvas is position infront of image */
position: absolute;
}
</style>
<title></title>
</head>
<body onload='myInit()'>
<canvas id='myCanvas'></canvas> <!-- gets re-positioned in myInit(); -->
<center>
<img src='http://dailyaeen.com.pk/epaper/wp-content/uploads/2012/09/27+Sep+2012-1.jpg?1349003469874' usemap='#imgmap_css_container_imgmap201293016112' class='imgmap_css_container' title='imgmap201293016112' alt='imgmap201293016112' id='img-imgmap201293016112' />
<map id='imgmap201293016112' name='imgmap_css_container_imgmap201293016112'>
<area shape="poly" onmouseover='myHover(this);' onmouseout='myLeave();' coords="2,0,604,-3,611,-3,611,166,346,165,345,130,-2,130,-2,124,1,128,1,126" href="" alt="imgmap201293016112-0" title="imgmap201293016112-0" class="imgmap201293016112-area" id="imgmap201293016112-area-0" />
<area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="1,131,341,213" href="" alt="imgmap201293016112-1" title="imgmap201293016112-1" class="imgmap201293016112-area" id="imgmap201293016112-area-1" />
<area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="346,166,614,241" href="" alt="imgmap201293016112-2" title="imgmap201293016112-2" class="imgmap201293016112-area" id="imgmap201293016112-area-2" />
<area shape="poly" onmouseover='myHover(this);' onmouseout='myLeave();' coords="917,242,344,239,345,496,574,495,575,435,917,433" href="" alt="imgmap201293016112-3" title="imgmap201293016112-3" class="imgmap201293016112-area" id="imgmap201293016112-area-3" />
<area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="1,416,341,494" href="" alt="imgmap201293016112-4" title="imgmap201293016112-4" class="imgmap201293016112-area" id="imgmap201293016112-area-4" />
<area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="1,215,341,410" href="" alt="imgmap201293016112-5" title="imgmap201293016112-5" class="imgmap201293016112-area" id="imgmap201293016112-area-5" />
<area shape="poly" onmouseover='myHover(this);' onmouseout='myLeave();' coords="916,533,916,436,578,436,576,495,806,496,807,535" href="" alt="imgmap201293016112-6" title="imgmap201293016112-6" class="imgmap201293016112-area" id="imgmap201293016112-area-6" />
<area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="805,536,918,614" href="" alt="imgmap201293016112-7" title="imgmap201293016112-7" class="imgmap201293016112-area" id="imgmap201293016112-area-7" />
<area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="461,494,803,616" href="" alt="imgmap201293016112-8" title="imgmap201293016112-8" class="imgmap201293016112-area" id="imgmap201293016112-area-8" />
<area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="0,497,223,616" href="" alt="imgmap201293016112-9" title="imgmap201293016112-9" class="imgmap201293016112-area" id="imgmap201293016112-area-9" />
<area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="230,494,456,614" href="" alt="imgmap201293016112-10" title="imgmap201293016112-10" class="imgmap201293016112-area" id="imgmap201293016112-area-10" />
<area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="345,935,572,1082" href="" alt="imgmap201293016112-11" title="imgmap201293016112-11" class="imgmap201293016112-area" id="imgmap201293016112-area-11" />
<area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="1,617,457,760" href="" alt="imgmap201293016112-12" title="imgmap201293016112-12" class="imgmap201293016112-area" id="imgmap201293016112-area-12" />
<area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="345,760,577,847" href="" alt="imgmap201293016112-13" title="imgmap201293016112-13" class="imgmap201293016112-area" id="imgmap201293016112-area-13" />
<area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="0,759,344,906" href="" alt="imgmap201293016112-14" title="imgmap201293016112-14" class="imgmap201293016112-area" id="imgmap201293016112-area-14" />
<area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="346,850,571,935" href="" alt="imgmap201293016112-15" title="imgmap201293016112-15" class="imgmap201293016112-area" id="imgmap201293016112-area-15" />
<area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="578,761,915,865" href="" alt="imgmap201293016112-16" title="imgmap201293016112-16" class="imgmap201293016112-area" id="imgmap201293016112-area-16" />
<area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="0,1017,226,1085" href="" alt="imgmap201293016112-17" title="imgmap201293016112-17" class="imgmap201293016112-area" id="imgmap201293016112-area-17" />
<area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="0,908,342,1017" href="" alt="imgmap201293016112-18" title="imgmap201293016112-18" class="imgmap201293016112-area" id="imgmap201293016112-area-18" />
<area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="229,1010,342,1084" href="" alt="imgmap201293016112-19" title="imgmap201293016112-19" class="imgmap201293016112-area" id="imgmap201293016112-area-19" />
<area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="0,1086,340,1206" href="" alt="imgmap201293016112-20" title="imgmap201293016112-20" class="imgmap201293016112-area" id="imgmap201293016112-area-20" />
<area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="0,1209,224,1290" href="" alt="imgmap201293016112-21" title="imgmap201293016112-21" class="imgmap201293016112-area" id="imgmap201293016112-area-21" />
<area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="0,1290,225,1432" href="" alt="imgmap201293016112-22" title="imgmap201293016112-22" class="imgmap201293016112-area" id="imgmap201293016112-area-22" />
<area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="0,1432,340,1517" href="" alt="imgmap201293016112-23" title="imgmap201293016112-23" class="imgmap201293016112-area" id="imgmap201293016112-area-23" />
<area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="346,1432,686,1517" href="" alt="imgmap201293016112-24" title="imgmap201293016112-24" class="imgmap201293016112-area" id="imgmap201293016112-area-24" />
<area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="461,1266,686,1429" href="" alt="imgmap201293016112-25" title="imgmap201293016112-25" class="imgmap201293016112-area" id="imgmap201293016112-area-25" />
<area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="230,1365,455,1430" href="" alt="imgmap201293016112-26" title="imgmap201293016112-26" class="imgmap201293016112-area" id="imgmap201293016112-area-26" />
<area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="231,1291,457,1360" href="" alt="imgmap201293016112-27" title="imgmap201293016112-27" class="imgmap201293016112-area" id="imgmap201293016112-area-27" />
<area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="230,1210,342,1289" href="" alt="imgmap201293016112-28" title="imgmap201293016112-28" class="imgmap201293016112-area" id="imgmap201293016112-area-28" />
<area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="692,928,916,1016" href="" alt="imgmap201293016112-29" title="imgmap201293016112-29" class="imgmap201293016112-area" id="imgmap201293016112-area-29" />
<area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="460,616,916,759" href="" alt="imgmap201293016112-30" title="imgmap201293016112-30" class="imgmap201293016112-area" id="imgmap201293016112-area-30" />
<area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="693,1316,917,1518" href="" alt="imgmap201293016112-31" title="imgmap201293016112-31" class="imgmap201293016112-area" id="imgmap201293016112-area-31" />
<area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="344,1150,572,1219" href="" alt="imgmap201293016112-32" title="imgmap201293016112-32" class="imgmap201293016112-area" id="imgmap201293016112-area-32" />
<area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="693,1015,916,1171" href="" alt="imgmap201293016112-33" title="imgmap201293016112-33" class="imgmap201293016112-area" id="imgmap201293016112-area-33" />
<area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="577,955,686,1032" href="" alt="imgmap201293016112-34" title="imgmap201293016112-34" class="imgmap201293016112-area" id="imgmap201293016112-area-34" />
<area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="577,1036,687,1101" href="" alt="imgmap201293016112-35" title="imgmap201293016112-35" class="imgmap201293016112-area" id="imgmap201293016112-area-35" />
<area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="576,1104,689,1172" href="" alt="imgmap201293016112-36" title="imgmap201293016112-36" class="imgmap201293016112-area" id="imgmap201293016112-area-36" />
<area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="691,1232,918,1313" href="" alt="imgmap201293016112-37" title="imgmap201293016112-37" class="imgmap201293016112-area" id="imgmap201293016112-area-37" />
<area shape="rect" onmouseover='myHover(this);' onmouseout='myLeave();' coords="341,1085,573,1151" href="" alt="imgmap201293016112-38" title="imgmap201293016112-38" class="imgmap201293016112-area" id="imgmap201293016112-area-38" />
<area shape="poly" onmouseover='myHover(this);' onmouseout='myLeave();' coords="917,868,917,925,688,927,688,955,576,955,574,867,572,864" href="" alt="imgmap201293016112-39" title="imgmap201293016112-39" class="imgmap201293016112-area" id="imgmap201293016112-area-39" />
<area shape="poly" onmouseover='myHover(this);' onmouseout='myLeave();' coords="919,1173,917,1231,688,1231,688,1266,574,1267,576,1175,576,1175" href="" alt="imgmap201293016112-40" title="imgmap201293016112-40" class="imgmap201293016112-area" id="imgmap201293016112-area-40" />
<area shape="poly" onmouseover='myHover(this);' onmouseout='myLeave();' coords="572,1222,572,1265,459,1265,458,1289,339,1290,344,1225" href="" alt="imgmap201293016112-41" title="imgmap201293016112-41" class="imgmap201293016112-area" id="imgmap201293016112-area-41" />
</map>
</center>
</body>
</html>
Convert a object into JSON in REST service by Spring MVC
The Json conversion should work out-of-the box. In order this to happen you need add some simple configurations:
First add a contentNegotiationManager into your spring config file. It is responsible for negotiating the response type:
<bean id="contentNegotiationManager"
class="org.springframework.web.accept.ContentNegotiationManagerFactoryBean">
<property name="favorPathExtension" value="false" />
<property name="favorParameter" value="true" />
<property name="ignoreAcceptHeader" value="true" />
<property name="useJaf" value="false" />
<property name="defaultContentType" value="application/json" />
<property name="mediaTypes">
<map>
<entry key="json" value="application/json" />
<entry key="xml" value="application/xml" />
</map>
</property>
</bean>
<mvc:annotation-driven
content-negotiation-manager="contentNegotiationManager" />
<context:annotation-config />
Then add Jackson2 jars (jackson-databind and jackson-core) in the service's class path. Jackson is responsible for the data serialization to JSON. Spring will detect these and initialize the MappingJackson2HttpMessageConverter automatically for you. Having only this configured I have my automatic conversion to JSON working. The described config has an additional benefit of giving you the possibility to serialize to XML if you set accept:application/xml header.
MySql Error: 1364 Field 'display_name' doesn't have default value
Also, I had this issue using Laravel, but fixed by changing my database schema to allow "null" inputs on a table where I plan to collect the information from separate forms:
public function up()
{
Schema::create('trip_table', function (Blueprint $table) {
$table->increments('trip_id')->unsigned();
$table->time('est_start');
$table->time('est_end');
$table->time('act_start')->nullable();
$table->time('act_end')->nullable();
$table->date('Trip_Date');
$table->integer('Starting_Miles')->nullable();
$table->integer('Ending_Miles')->nullable();
$table->string('Bus_id')->nullable();
$table->string('Event');
$table->string('Desc')->nullable();
$table->string('Destination');
$table->string('Departure_location');
$table->text('Drivers_Comment')->nullable();
$table->string('Requester')->nullable();
$table->integer('driver_id')->nullable();
$table->timestamps();
});
}
The ->nullable(); Added to the end. This is using Laravel. Hope this helps someone, thanks!
Bootstrap $('#myModal').modal('show') is not working
the solution of 'bootstrap modal is not opening' is, put your Jquery CDN first in the head tag (after starting head tag).
I wasted two days in finding this problem.
How to create a DB link between two oracle instances
Creation of DB Link
CREATE DATABASE LINK dblinkname
CONNECT TO $usename
IDENTIFIED BY $password
USING '$sid';
(Note: sid is being passed between single quotes above. )
Example Queries for above DB Link
select * from tableA@dblinkname;
insert into tableA(select * from tableA@dblinkname);
Jenkins: Is there any way to cleanup Jenkins workspace?
You will need to install this plugin before the options mentioned above will appear
This plugin add the check box to all job configs to allow you to delete the whole workspace before any steps (inc source control) are run
This is useful to make sure you always start from a known point to guarantee how you build will run
How to check if a String contains any letter from a to z?
Replace your for loop by this :
errorCounter = Regex.Matches(yourstring,@"[a-zA-Z]").Count;
Remember to use Regex class, you have to using System.Text.RegularExpressions; in your import
How do I call REST API from an android app?
- If you want to integrate Retrofit (all steps defined here):
Goto my blog : retrofit with kotlin
- Please use android-async-http library.
the link below explains everything step by step.
http://loopj.com/android-async-http/
Here are sample apps:
Create a class :
public class HttpUtils {
private static final String BASE_URL = "http://api.twitter.com/1/";
private static AsyncHttpClient client = new AsyncHttpClient();
public static void get(String url, RequestParams params, AsyncHttpResponseHandler responseHandler) {
client.get(getAbsoluteUrl(url), params, responseHandler);
}
public static void post(String url, RequestParams params, AsyncHttpResponseHandler responseHandler) {
client.post(getAbsoluteUrl(url), params, responseHandler);
}
public static void getByUrl(String url, RequestParams params, AsyncHttpResponseHandler responseHandler) {
client.get(url, params, responseHandler);
}
public static void postByUrl(String url, RequestParams params, AsyncHttpResponseHandler responseHandler) {
client.post(url, params, responseHandler);
}
private static String getAbsoluteUrl(String relativeUrl) {
return BASE_URL + relativeUrl;
}
}
Call Method :
RequestParams rp = new RequestParams();
rp.add("username", "aaa"); rp.add("password", "aaa@123");
HttpUtils.post(AppConstant.URL_FEED, rp, new JsonHttpResponseHandler() {
@Override
public void onSuccess(int statusCode, Header[] headers, JSONObject response) {
// If the response is JSONObject instead of expected JSONArray
Log.d("asd", "---------------- this is response : " + response);
try {
JSONObject serverResp = new JSONObject(response.toString());
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
@Override
public void onSuccess(int statusCode, Header[] headers, JSONArray timeline) {
// Pull out the first event on the public timeline
}
});
Please grant internet permission in your manifest file.
<uses-permission android:name="android.permission.INTERNET" />
you can add compile 'com.loopj.android:android-async-http:1.4.9' for Header[] and compile 'org.json:json:20160212' for JSONObject in build.gradle file if required.
The type WebMvcConfigurerAdapter is deprecated
Use org.springframework.web.servlet.config.annotation.WebMvcConfigurer
With Spring Boot 2.1.4.RELEASE (Spring Framework 5.1.6.RELEASE), do like this
package vn.bkit;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter; // Deprecated.
import org.springframework.web.servlet.view.InternalResourceViewResolver;
@Configuration
@EnableWebMvc
public class MvcConfiguration implements WebMvcConfigurer {
@Bean
public ViewResolver getViewResolver() {
InternalResourceViewResolver resolver = new InternalResourceViewResolver();
resolver.setPrefix("/WEB-INF/");
resolver.setSuffix(".html");
return resolver;
}
@Override
public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
configurer.enable();
}
}
ERROR 2006 (HY000): MySQL server has gone away
I solved the error ERROR 2006 (HY000) at line 97: MySQL server has gone away and successfully migrated a >5GB sql file by performing these two steps in order:
Created /etc/my.cnf as others have recommended, with the following contents:
[mysql] connect_timeout = 43200 max_allowed_packet = 2048M net_buffer_length = 512M debug-info = TRUEAppending the flags
--force --wait --reconnectto the command (i.e.mysql -u root -p -h localhost my_db < file.sql --verbose --force --wait --reconnect).
Important Note: It was necessary to perform both steps, because if I didn't bother making the changes to /etc/my.cnf file as well as appending those flags, some of the tables were missing after the import.
System used: OSX El Capitan 10.11.5; mysql Ver 14.14 Distrib 5.5.51 for osx10.8 (i386)
Reading binary file and looping over each byte
if you are looking for something speedy, here's a method I've been using that's worked for years:
from array import array
with open( path, 'rb' ) as file:
data = array( 'B', file.read() ) # buffer the file
# evaluate it's data
for byte in data:
v = byte # int value
c = chr(byte)
if you want to iterate chars instead of ints, you can simply use data = file.read(), which should be a bytes() object in py3.
Passing multiple values to a single PowerShell script parameter
I call a scheduled script who must connect to a list of Server this way:
Powershell.exe -File "YourScriptPath" "Par1,Par2,Par3"
Then inside the script:
param($list_of_servers)
...
Connect-Viserver $list_of_servers.split(",")
The split operator returns an array of string
Configuring Git over SSH to login once
Make sure that when you cloned the repository, you did so with the SSH URL and not the HTTPS; in the clone URL box of the repo, choose the SSH protocol before copying the URL. See image below:
How to upload files to server using JSP/Servlet?
I am Using common Servlet for every Html Form whether it has attachments or not.
This Servlet returns a TreeMap where the keys are jsp name Parameters and values are User Inputs and saves all attachments in fixed directory and later you rename the directory of your choice.Here Connections is our custom interface having connection object. I think this will help you
public class ServletCommonfunctions extends HttpServlet implements
Connections {
private static final long serialVersionUID = 1L;
public ServletCommonfunctions() {}
protected void doPost(HttpServletRequest request,
HttpServletResponse response) throws ServletException,
IOException {}
public SortedMap<String, String> savefilesindirectory(
HttpServletRequest request, HttpServletResponse response)
throws IOException {
// Map<String, String> key_values = Collections.synchronizedMap( new
// TreeMap<String, String>());
SortedMap<String, String> key_values = new TreeMap<String, String>();
String dist = null, fact = null;
PrintWriter out = response.getWriter();
File file;
String filePath = "E:\\FSPATH1\\2KL06CS048\\";
System.out.println("Directory Created ????????????"
+ new File(filePath).mkdir());
int maxFileSize = 5000 * 1024;
int maxMemSize = 5000 * 1024;
// Verify the content type
String contentType = request.getContentType();
if ((contentType.indexOf("multipart/form-data") >= 0)) {
DiskFileItemFactory factory = new DiskFileItemFactory();
// maximum size that will be stored in memory
factory.setSizeThreshold(maxMemSize);
// Location to save data that is larger than maxMemSize.
factory.setRepository(new File(filePath));
// Create a new file upload handler
ServletFileUpload upload = new ServletFileUpload(factory);
// maximum file size to be uploaded.
upload.setSizeMax(maxFileSize);
try {
// Parse the request to get file items.
@SuppressWarnings("unchecked")
List<FileItem> fileItems = upload.parseRequest(request);
// Process the uploaded file items
Iterator<FileItem> i = fileItems.iterator();
while (i.hasNext()) {
FileItem fi = (FileItem) i.next();
if (!fi.isFormField()) {
// Get the uploaded file parameters
String fileName = fi.getName();
// Write the file
if (fileName.lastIndexOf("\\") >= 0) {
file = new File(filePath
+ fileName.substring(fileName
.lastIndexOf("\\")));
} else {
file = new File(filePath
+ fileName.substring(fileName
.lastIndexOf("\\") + 1));
}
fi.write(file);
} else {
key_values.put(fi.getFieldName(), fi.getString());
}
}
} catch (Exception ex) {
System.out.println(ex);
}
}
return key_values;
}
}
Can't ignore UserInterfaceState.xcuserstate
All Answer is great but here is the one will remove for every user if you work in different Mac (Home and office)
git rm --cache */UserInterfaceState.xcuserstate
git commit -m "Never see you again, UserInterfaceState"
How to make child process die after parent exits?
I have achieved this in the past by running the "original" code in the "child" and the "spawned" code in the "parent" (that is: you reverse the usual sense of the test after fork()). Then trap SIGCHLD in the "spawned" code...
May not be possible in your case, but cute when it works.
How to backup MySQL database in PHP?
I would recommend using mysqldump and from php use the system command as suggested in the article you found.
This certificate has an invalid issuer Apple Push Services
In Apple's Developer's portal, add a new certificate, and when asked "What type of certificate do you need?" choose "WorldWide developer relations certificate". Generate the new certificate, download and install. The moment you do that, you will no longer see the message you have described.
Edit:
The certificate can be downloaded from the following page:
https://www.apple.com/certificateauthority/
You can choose one of the following two certificates:
"WWDR Certificate (Expiring 02/07/23)"
or
"WWDR Certificate (Expiring 02/14/16)"
Error: macro names must be identifiers using #ifdef 0
#ifdef 0
...
#endif
#ifdef expect a macro rather than expression when using constant or expression
#if 0
...
#endif
or
#if !defined(PP_CHECK) || defined(PP_CHECK_OTHER)
..
#endif
if #ifdef is used the it reports this error
#ifdef !defined(PP_CHECK) || defined(PP_CHECK_OTHER)
..
#endif
Where #ifdef expect a macro rather than macro expresssion
What are the rules for calling the superclass constructor?
In C++ there is a concept of constructor's initialization list, which is where you can and should call the base class' constructor and where you should also initialize the data members. The initialization list comes after the constructor signature following a colon, and before the body of the constructor. Let's say we have a class A:
class A : public B
{
public:
A(int a, int b, int c);
private:
int b_, c_;
};
Then, assuming B has a constructor which takes an int, A's constructor may look like this:
A::A(int a, int b, int c)
: B(a), b_(b), c_(c) // initialization list
{
// do something
}
As you can see, the constructor of the base class is called in the initialization list. Initializing the data members in the initialization list, by the way, is preferable to assigning the values for b_, and c_ inside the body of the constructor, because you are saving the extra cost of assignment.
Keep in mind, that data members are always initialized in the order in which they are declared in the class definition, regardless of their order in the initialization list. To avoid strange bugs, which may arise if your data members depend on each other, you should always make sure that the order of the members is the same in the initialization list and the class definition. For the same reason the base class constructor must be the first item in the initialization list. If you omit it altogether, then the default constructor for the base class will be called automatically. In that case, if the base class does not have a default constructor, you will get a compiler error.
How can I debug javascript on Android?
Put into address line chrome://about. You will see links to all possible dev pages.
How to call a javaScript Function in jsp on page load without using <body onload="disableView()">
Either use window.onload this way
<script>
window.onload = function() {
// ...
}
</script>
or alternatively
<script>
window.onload = functionName;
</script>
(yes, without the parentheses)
Or just put the script at the very bottom of page, right before </body>. At that point, all HTML DOM elements are ready to be accessed by document functions.
<body>
...
<script>
functionName();
</script>
</body>
How do you comment an MS-access Query?
I decided to add a condition to the Where Clause that always evaluates true but allows the coder to find your comment.
Select
...
From
...
Where
....
And "Comment: FYI, Access doesn't support normal comments!"<>""
The last line always evaluates to true so it doesn't affect the data returned but allows you to leave a comment for the next guy.
successful/fail message pop up box after submit?
You are echoing outside the body tag of your HTML. Put your echos there, and you should be fine.
Also, remove the onclick="alert()" from your submit. This is the cause for your first undefined message.
<?php
$posted = false;
if( $_POST ) {
$posted = true;
// Database stuff here...
// $result = mysql_query( ... )
$result = $_POST['name'] == "danny"; // Dummy result
}
?>
<html>
<head></head>
<body>
<?php
if( $posted ) {
if( $result )
echo "<script type='text/javascript'>alert('submitted successfully!')</script>";
else
echo "<script type='text/javascript'>alert('failed!')</script>";
}
?>
<form action="" method="post">
Name:<input type="text" id="name" name="name"/>
<input type="submit" value="submit" name="submit"/>
</form>
</body>
</html>
Route.get() requires callback functions but got a "object Undefined"
This thing also happened with my code, but somehow I solved my problem. I checked my routes folder (where my all endpoints are their). I would recommend you check your routes folder file and check whether you forgot to add your particular router link.
Get the list of stored procedures created and / or modified on a particular date?
SELECT name
FROM sys.objects
WHERE type = 'P'
AND (DATEDIFF(D,modify_date, GETDATE()) < 7
OR DATEDIFF(D,create_date, GETDATE()) < 7)
How to create a static library with g++?
Create a .o file:
g++ -c header.cpp
add this file to a library, creating library if necessary:
ar rvs header.a header.o
use library:
g++ main.cpp header.a
CSS: 100% font size - 100% of what?
As to my understanding it help your content adjust with different values of font family and font sizes.Thus making your content scalable. As to the issue of inhering font size we can always override by giving a specific font size for the element.
Should I make HTML Anchors with 'name' or 'id'?
ID method will not work on older browsers, anchor name method will be deprecated in newer HTML versions... I'd go with id.
YouTube: How to present embed video with sound muted
This is easy. Just add mute=1 to the src parameter of iframe.
Example:
<iframe src="https://www.youtube.com/embed/uNRGWVJ10gQ?controls=0&mute=1&showinfo=0&rel=0&autoplay=1&loop=1&playlist=uNRGWVJ10gQ" frameborder="0" allowfullscreen></iframe>
How to validate a form with multiple checkboxes to have atleast one checked
This script below should put you on the right track perhaps?
You can keep this html the same (though I changed the method to POST):
<form method="POST" id="subscribeForm">
<fieldset id="cbgroup">
<div><input name="list" id="list0" type="checkbox" value="newsletter0" >zero</div>
<div><input name="list" id="list1" type="checkbox" value="newsletter1" >one</div>
<div><input name="list" id="list2" type="checkbox" value="newsletter2" >two</div>
</fieldset>
<input name="submit" type="submit" value="submit">
</form>
and this javascript validates
function onSubmit()
{
var fields = $("input[name='list']").serializeArray();
if (fields.length === 0)
{
alert('nothing selected');
// cancel submit
return false;
}
else
{
alert(fields.length + " items selected");
}
}
// register event on form, not submit button
$('#subscribeForm').submit(onSubmit)
and you can find a working example of it here
UPDATE (Oct 2012)
Additionally it should be noted that the checkboxes must have a "name" property, or else they will not be added to the array. Only having "id" will not work.
UPDATE (May 2013)
Moved the submit registration to javascript and registered the submit onto the form (as it should have been originally)
UPDATE (June 2016)
Changes == to ===
Remove the last line from a file in Bash
Here's how you can do it manually (I personally use this method a lot when I need to quickly remove the last line in a file):
vim + [FILE]
That + sign there means that when the file is opened in the vim text editor, the cursor will be positioned on the last line of the file.
Now just press d twice on your keyboard. This will do exactly what you want—remove the last line. After that, press : followed by x and then press Enter. This will save the changes and bring you back to the shell. Now, the last line has been successfully removed.
How to send a "multipart/form-data" with requests in python?
I'm trying to send a request to URL_server with request module in python 3. This works for me:
# -*- coding: utf-8 *-*
import json, requests
URL_SERVER_TO_POST_DATA = "URL_to_send_POST_request"
HEADERS = {"Content-Type" : "multipart/form-data;"}
def getPointsCC_Function():
file_data = {
'var1': (None, "valueOfYourVariable_1"),
'var2': (None, "valueOfYourVariable_2")
}
try:
resElastic = requests.post(URL_GET_BALANCE, files=file_data)
res = resElastic.json()
except Exception as e:
print(e)
print (json.dumps(res, indent=4, sort_keys=True))
getPointsCC_Function()
Where:
- URL_SERVER_TO_POST_DATA = Server where we going to send data
- HEADERS = Headers sended
- file_data = Params sended
Invalid character in identifier
I got a similar issue. My solution was to change minus character from:
—
to
-
Python timedelta in years
I would use datetime.date data type instead, as it is simpler when it comes to checking how many years, months and days have passed:
now = date.today()
birthday = date(1993, 4, 4)
print("you are", now.year - birthday.year, "years,", now.month - birthday.month, "months and",
now.day - birthday.day, "days old")
Output:
you are 27 years, 7 months and 11 days old
I use timedelta when I need to perform arithmetic on a specific date:
age = now - birthday
print("addition of days to a date: ", birthday + timedelta(days=age.days))
Output:
addition of days to a date: 2020-11-15
Get value of c# dynamic property via string
Much of the time when you ask for a dynamic object, you get an ExpandoObject (not in the question's anonymous-but-statically-typed example above, but you mention JavaScript and my chosen JSON parser JsonFx, for one, generates ExpandoObjects).
If your dynamic is in fact an ExpandoObject, you can avoid reflection by casting it to IDictionary, as described at http://msdn.microsoft.com/en-gb/library/system.dynamic.expandoobject.aspx.
Once you've cast to IDictionary, you have access to useful methods like .Item and .ContainsKey
Equivalent to 'app.config' for a library (DLL)
Preamble: I'm using NET 2.0;
The solution posted by Yiannis Leoussis is acceptable but I had some problem with it.
First, the static AppSettingsSection AppSettings = (AppSettingsSection)myDllConfig.GetSection("appSettings"); returns null. I had to change it to static AppSettingSection = myDllConfig.AppSettings;
Then the return (T)Convert.ChangeType(AppSettings.Settings[name].Value, typeof(T), nfi); doesn't have a catch for Exceptions. So I've changed it
try
{
return (T)Convert.ChangeType(AppSettings.Settings[name].Value, typeof(T), nfi);
}
catch (Exception ex)
{
return default(T);
}
This works very well but if you have a different dll you have to rewrite every time the code for every assembly. So, this is my version for an Class to instantiate every time you need.
public class Settings
{
private AppSettingsSection _appSettings;
private NumberFormatInfo _nfi;
public Settings(Assembly currentAssembly)
{
UriBuilder uri = new UriBuilder(currentAssembly.CodeBase);
string configPath = Uri.UnescapeDataString(uri.Path);
Configuration myDllConfig = ConfigurationManager.OpenExeConfiguration(configPath);
_appSettings = myDllConfig.AppSettings;
_nfi = new NumberFormatInfo()
{
NumberGroupSeparator = "",
CurrencyDecimalSeparator = "."
};
}
public T Setting<T>(string name)
{
try
{
return (T)Convert.ChangeType(_appSettings.Settings[name].Value, typeof(T), _nfi);
}
catch (Exception ex)
{
return default(T);
}
}
}
For a config:
<add key="Enabled" value="true" />
<add key="ExportPath" value="c:\" />
<add key="Seconds" value="25" />
<add key="Ratio" value="0.14" />
Use it as:
Settings _setting = new Settings(Assembly.GetExecutingAssembly());
somebooleanvar = _settings.Setting<bool>("Enabled");
somestringlvar = _settings.Setting<string>("ExportPath");
someintvar = _settings.Setting<int>("Seconds");
somedoublevar = _settings.Setting<double>("Ratio");
What are the uses of "using" in C#?
Another example of a reasonable use in which the object is immediately disposed:
using (IDataReader myReader = DataFunctions.ExecuteReader(CommandType.Text, sql.ToString(), dp.Parameters, myConnectionString))
{
while (myReader.Read())
{
MyObject theObject = new MyObject();
theObject.PublicProperty = myReader.GetString(0);
myCollection.Add(theObject);
}
}
What to use instead of "addPreferencesFromResource" in a PreferenceActivity?
@Garret Wilson Thank you so much! As a noob to android coding, I've been stuck with the preferences incompatibility issue for so many hours, and I find it so disappointing they deprecated the use of some methods/approaches for new ones that aren't supported by the older APIs thus having to resort to all sorts of workarounds to make your app work in a wide range of devices. It's really frustrating!
Your class is great, for it allows you to keep working in new APIs wih preferences the way it used to be, but it's not backward compatible. Since I'm trying to reach a wide range of devices I tinkered with it a bit to make it work in pre API 11 devices as well as in newer APIs:
import android.annotation.TargetApi;
import android.os.Bundle;
import android.preference.PreferenceActivity;
import android.preference.PreferenceFragment;
public class MyPrefsActivity extends PreferenceActivity
{
private static int prefs=R.xml.myprefs;
@Override
protected void onCreate(final Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
try {
getClass().getMethod("getFragmentManager");
AddResourceApi11AndGreater();
} catch (NoSuchMethodException e) { //Api < 11
AddResourceApiLessThan11();
}
}
@SuppressWarnings("deprecation")
protected void AddResourceApiLessThan11()
{
addPreferencesFromResource(prefs);
}
@TargetApi(11)
protected void AddResourceApi11AndGreater()
{
getFragmentManager().beginTransaction().replace(android.R.id.content,
new PF()).commit();
}
@TargetApi(11)
public static class PF extends PreferenceFragment
{
@Override
public void onCreate(final Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
addPreferencesFromResource(MyPrefsActivity.prefs); //outer class
// private members seem to be visible for inner class, and
// making it static made things so much easier
}
}
}
Tested in two emulators (2.2 and 4.2) with success.
Why my code looks so crappy:
I'm a noob to android coding, and I'm not the greatest java fan.
In order to avoid the deprecated warning and to force Eclipse to allow me to compile I had to resort to annotations, but these seem to affect only classes or methods, so I had to move the code onto two new methods to take advantage of this.
I wouldn't like having to write my xml resource id twice anytime I copy&paste the class for a new PreferenceActivity, so I created a new variable to store this value.
I hope this will be useful to somebody else.
P.S.: Sorry for my opinionated views, but when you come new and find such handicaps, you can't help it but to get frustrated!
How can you float: right in React Native?
You can directly specify the item's alignment, for example:
textright: {
alignSelf: 'flex-end',
},
Cloud Firestore collection count
I have try a lot with different approaches. And finally, I improve one of the methods. First you need to create a separate collection and save there all events. Second you need to create a new lambda to be triggered by time. This lambda will Count events in event collection and clear event documents. Code details in article. https://medium.com/@ihor.malaniuk/how-to-count-documents-in-google-cloud-firestore-b0e65863aeca
How to use filter, map, and reduce in Python 3
The functionality of map and filter was intentionally changed to return iterators, and reduce was removed from being a built-in and placed in functools.reduce.
So, for filter and map, you can wrap them with list() to see the results like you did before.
>>> def f(x): return x % 2 != 0 and x % 3 != 0
...
>>> list(filter(f, range(2, 25)))
[5, 7, 11, 13, 17, 19, 23]
>>> def cube(x): return x*x*x
...
>>> list(map(cube, range(1, 11)))
[1, 8, 27, 64, 125, 216, 343, 512, 729, 1000]
>>> import functools
>>> def add(x,y): return x+y
...
>>> functools.reduce(add, range(1, 11))
55
>>>
The recommendation now is that you replace your usage of map and filter with generators expressions or list comprehensions. Example:
>>> def f(x): return x % 2 != 0 and x % 3 != 0
...
>>> [i for i in range(2, 25) if f(i)]
[5, 7, 11, 13, 17, 19, 23]
>>> def cube(x): return x*x*x
...
>>> [cube(i) for i in range(1, 11)]
[1, 8, 27, 64, 125, 216, 343, 512, 729, 1000]
>>>
They say that for loops are 99 percent of the time easier to read than reduce, but I'd just stick with functools.reduce.
Edit: The 99 percent figure is pulled directly from the What’s New In Python 3.0 page authored by Guido van Rossum.
Python: count repeated elements in the list
You can do that using count:
my_dict = {i:MyList.count(i) for i in MyList}
>>> print my_dict #or print(my_dict) in python-3.x
{'a': 3, 'c': 3, 'b': 1}
Or using collections.Counter:
from collections import Counter
a = dict(Counter(MyList))
>>> print a #or print(a) in python-3.x
{'a': 3, 'c': 3, 'b': 1}
'str' object does not support item assignment in Python
The other answers are correct, but you can, of course, do something like:
>>> str1 = "mystring"
>>> list1 = list(str1)
>>> list1[5] = 'u'
>>> str1 = ''.join(list1)
>>> print(str1)
mystrung
>>> type(str1)
<type 'str'>
if you really want to.
ASP.NET MVC 3 Razor: Include JavaScript file in the head tag
You can use Named Sections.
_Layout.cshtml
<head>
<script type="text/javascript" src="@Url.Content("/Scripts/jquery-1.6.2.min.js")"></script>
@RenderSection("JavaScript", required: false)
</head>
_SomeView.cshtml
@section JavaScript
{
<script type="text/javascript" src="@Url.Content("/Scripts/SomeScript.js")"></script>
<script type="text/javascript" src="@Url.Content("/Scripts/AnotherScript.js")"></script>
}
bind/unbind service example (android)
First of all, two things that we need to understand,
Client
- It makes request to a specific server
bindService(new Intent("com.android.vending.billing.InAppBillingService.BIND"),
mServiceConn, Context.BIND_AUTO_CREATE);
here mServiceConn is instance of ServiceConnection class(inbuilt) it is actually interface
that we need to implement with two (1st for network connected and 2nd network not connected) method to monitor network connection state.
Server
- It handles the request of the client and makes replica of its own which is private to client only who send request and this raplica of server runs on different thread.
Now at client side, how to access all the methods of server?
- Server sends response with
IBinderObject. So,IBinderobject is our handler which accesses all the methods ofServiceby using (.) operator.
.
MyService myService;
public ServiceConnection myConnection = new ServiceConnection() {
public void onServiceConnected(ComponentName className, IBinder binder) {
Log.d("ServiceConnection","connected");
myService = binder;
}
//binder comes from server to communicate with method's of
public void onServiceDisconnected(ComponentName className) {
Log.d("ServiceConnection","disconnected");
myService = null;
}
}
Now how to call method which lies in service
myservice.serviceMethod();
Here myService is object and serviceMethod is method in service.
and by this way communication is established between client and server.
How to fix Subversion lock error
Using SVN 1.8, deleting lock file does not help (lock file does not exists).
Refresh/Cleanup did not solve either.
What did solve:
1) Backup your directory, just incase...
2) Team... Disconnect. Choose to remove .svn files
3) Add it again to SVN.
Note: In my case, error was due to loss of network connection during initial commit.
How to show all of columns name on pandas dataframe?
You can globally set printing options. I think this should work:
Method 1:
pd.set_option('display.max_columns', None)
pd.set_option('display.max_rows', None)
Method 2:
pd.options.display.max_columns = None
pd.options.display.max_rows = None
This will allow you to see all column names & rows when you are doing .head(). None of the column name will be truncated.
If you just want to see the column names you can do:
print(df.columns.tolist())
Redirect Windows cmd stdout and stderr to a single file
There is, however, no guarantee that the output of SDTOUT and STDERR are interweaved line-by-line in timely order, using the POSIX redirect merge syntax.
If an application uses buffered output, it may happen that the text of one stream is inserted in the other at a buffer boundary, which may appear in the middle of a text line.
A dedicated console output logger (I.e. the "StdOut/StdErr Logger" by 'LoRd MuldeR') may be more reliable for such a task.
Getting "unixtime" in Java
Avoid the Date object creation w/ System.currentTimeMillis(). A divide by 1000 gets you to Unix epoch.
As mentioned in a comment, you typically want a primitive long (lower-case-l long) not a boxed object long (capital-L Long) for the unixTime variable's type.
long unixTime = System.currentTimeMillis() / 1000L;
How to revert multiple git commits?
If you
- have a merged commit and
- you are not able to revert, and
- you don't mind squashing the history you are to revert,
then you can
git reset --soft HEAD~(number of commits you'd like to revert)
git commit -m "The stuff you didn't like."
git log
# copy the hash of your last commit
git revert <hash of your last (squashed) commit>
Then when you want to push your changes remember to use the -f flag because you modified the history
git push <your fork> <your branch> -f
How to add a classname/id to React-Bootstrap Component?
If you look at the code for the component you can see that it uses the className prop passed to it to combine with the row class to get the resulting set of classes (<Row className="aaa bbb"... works).Also, if you provide the id prop like <Row id="444" ... it will actually set the id attribute for the element.
C++/CLI Converting from System::String^ to std::string
I like to stay away from the marshaller.
Using CString newString(originalString);
Seems much cleaner and faster to me. No need to worry about creating and deleting a context.
Python: How to check if keys exists and retrieve value from Dictionary in descending priority
If we encapsulate that in a function we could use recursion and state clearly the purpose by naming the function properly (not sure if getAny is actually a good name):
def getAny(dic, keys, default=None):
return (keys or default) and dic.get(keys[0],
getAny( dic, keys[1:], default=default))
or even better, without recursion and more clear:
def getAny(dic, keys, default=None):
for k in keys:
if k in dic:
return dic[k]
return default
Then that could be used in a way similar to the dict.get method, like:
getAny(myDict, keySet)
and even have a default result in case of no keys found at all:
getAny(myDict, keySet, "not found")
1114 (HY000): The table is full
This could also be the InnoDB limit for the number of open transactions:
http://bugs.mysql.com/bug.php?id=26590
at 1024 transactions, that have undo records (as in, edited any data), InnoDB will fail to work
What's the difference between ViewData and ViewBag?
All answers suggest that ViewBag and/or ViewData is to pass data from Controller to Views which is misinformation. both are very useful to pass data from Views to Layout or Partial to Views (or ViewComponents, etc) It's not controller exclusive.
as the default asp.net sample have this in the layout page:
<title>@ViewData["Title"] - MyApp</title>
and in any view
ViewData["Title"] = "Details";
So then, to asking the question: "what's the difference between ViewBag and ViewData?"
The most notable difference is ViewData is a Strongly Typed Dictionary while
ViewBag is a dynamic type.
Note that the data inside IS THE SAME
ViewData["Title"] = "MyTitle";
ViewBag.Title; // returns "MyTitle";
When to use one or another?
ViewBagdoesn't support not valid C# names. you can't accessViewData["Key With Space"]withViewBagViewBag.Somethingis dynamic and you may have problems when calling methods (like extension methods) that needs to know the exact parameter at compile time.ViewBagcan check for nulls syntactical cleaner:ViewBag.Person?.NameViewDatahave all the properties of a Dictionary likeContainsKey,Add, etc. so you can useViewData.Add("somekey", "somevalue")keep in mind it might throw exceptions.- Using
ViewDataon views needs TypeCasting whileViewBagdon't.
Knowing the subtle differences, using one or another is much more a taste preference.
Normally you can think of ViewBag.AnyKey to an alias of ViewData["AnyKey"]
Python Serial: How to use the read or readline function to read more than 1 character at a time
Serial sends data 8 bits at a time, that translates to 1 byte and 1 byte means 1 character.
You need to implement your own method that can read characters into a buffer until some sentinel is reached. The convention is to send a message like 12431\n indicating one line.
So what you need to do is to implement a buffer that will store X number of characters and as soon as you reach that \n, perform your operation on the line and proceed to read the next line into the buffer.
Note you will have to take care of buffer overflow cases i.e. when a line is received that is longer than your buffer etc...
EDIT
import serial
ser = serial.Serial(
port='COM5',\
baudrate=9600,\
parity=serial.PARITY_NONE,\
stopbits=serial.STOPBITS_ONE,\
bytesize=serial.EIGHTBITS,\
timeout=0)
print("connected to: " + ser.portstr)
#this will store the line
line = []
while True:
for c in ser.read():
line.append(c)
if c == '\n':
print("Line: " + ''.join(line))
line = []
break
ser.close()
JavaScript: changing the value of onclick with or without jQuery
You shouldn't be using onClick any more if you are using jQuery. jQuery provides its own methods of attaching and binding events. See .click()
$(document).ready(function(){
var js = "alert('B:' + this.id); return false;";
// create a function from the "js" string
var newclick = new Function(js);
// clears onclick then sets click using jQuery
$("#anchor").attr('onclick', '').click(newclick);
});
That should cancel the onClick function - and keep your "javascript from a string" as well.
The best thing to do would be to remove the onclick="" from the <a> element in the HTML code and switch to using the Unobtrusive method of binding an event to click.
You also said:
Using
onclick = function() { return eval(js); }doesn't work because you are not allowed to use return in code passed to eval().
No - it won't, but onclick = eval("(function(){"+js+"})"); will wrap the 'js' variable in a function enclosure. onclick = new Function(js); works as well and is a little cleaner to read. (note the capital F) -- see documentation on Function() constructors
Find row number of matching value
For your first method change ws.Range("A") to ws.Range("A:A") which will search the entirety of column a, like so:
Sub Find_Bingo()
Dim wb As Workbook
Dim ws As Worksheet
Dim FoundCell As Range
Set wb = ActiveWorkbook
Set ws = ActiveSheet
Const WHAT_TO_FIND As String = "Bingo"
Set FoundCell = ws.Range("A:A").Find(What:=WHAT_TO_FIND)
If Not FoundCell Is Nothing Then
MsgBox (WHAT_TO_FIND & " found in row: " & FoundCell.Row)
Else
MsgBox (WHAT_TO_FIND & " not found")
End If
End Sub
For your second method, you are using Bingo as a variable instead of a string literal. This is a good example of why I add Option Explicit to the top of all of my code modules, as when you try to run the code it will direct you to this "variable" which is undefined and not intended to be a variable at all.
Additionally, when you are using With...End With you need a period . before you reference Cells, so Cells should be .Cells. This mimics the normal qualifying behavior (i.e. Sheet1.Cells.Find..)
Change Bingo to "Bingo" and change Cells to .Cells
With Sheet1
Set FoundCell = .Cells.Find(What:="Bingo", After:=.Cells(1, 1), _
LookIn:=xlValues, lookat:=xlPart, SearchOrder:=xlByRows, _
SearchDirection:=xlNext, MatchCase:=False, SearchFormat:=False)
End With
If Not FoundCell Is Nothing Then
MsgBox ("""Bingo"" found in row " & FoundCell.Row)
Else
MsgBox ("Bingo not found")
End If
Update
In my
With Sheet1
.....
End With
The Sheet1 refers to a worksheet's code name, not the name of the worksheet itself. For example, say I open a new blank Excel workbook. The default worksheet is just Sheet1. I can refer to that in code either with the code name of Sheet1 or I can refer to it with the index of Sheets("Sheet1"). The advantage to using a codename is that it does not change if you change the name of the worksheet.
Continuing this example, let's say I renamed Sheet1 to Data. Using Sheet1 would continue to work, as the code name doesn't change, but now using Sheets("Sheet1") would return an error and that syntax must be updated to the new name of the sheet, so it would need to be Sheets("Data").
In the VB Editor you would see something like this:
Notice how, even though I changed the name to Data, there is still a Sheet1 to the left. That is what I mean by codename.
The Data worksheet can be referenced in two ways:
Debug.Print Sheet1.Name
Debug.Print Sheets("Data").Name
Both should return Data
More discussion on worksheet code names can be found here.
What is the unix command to see how much disk space there is and how much is remaining?
Look for the commands du (disk usage) and df (disk free)
Computing cross-correlation function?
To cross-correlate 1d arrays use numpy.correlate.
For 2d arrays, use scipy.signal.correlate2d.
There is also scipy.stsci.convolve.correlate2d.
There is also matplotlib.pyplot.xcorr which is based on numpy.correlate.
See this post on the SciPy mailing list for some links to different implementations.
Edit: @user333700 added a link to the SciPy ticket for this issue in a comment.
ScriptManager.RegisterStartupScript code not working - why?
I came across a similar issue. However this issue was caused because of the way i designed the pages to bring the requests in. I placed all of my .js files as the last thing to be applied to the page, therefore they are at the end of my document. The .js files have all my functions include. The script manager seems that to be able to call this function it needs the js file already present with the function being called at the time of load. Hope this helps anyone else.
jQuery 'if .change() or .keyup()'
you can bind to multiple events by separating them with a space:
$(":input").on("keyup change", function(e) {
// do stuff!
})
docs here.
hope that helps. cheers!
Convert date to day name e.g. Mon, Tue, Wed
This is what happens when you store your dates and times in a non-standard format. Working with them become problematic.
$datetime = DateTime::createFromFormat('YmdHi', '201308131830');
echo $datetime->format('D');
How to make child divs always fit inside parent div?
If I've understood you correctly, the easiest method is to float the children. For example:
#one { width: 500px; height: 1%; overflow: hidden; background: red; }
#two { float: left; width: 250px; height: 400px; background: aqua; }
#two { float: left; width: 250px; height: 200px; background: lime; }
Setting a dimension (height/width) and overflow to auto or hidden on the parent element causes it to contain any floated child elements.
Note that overflow:hidden; can occasionally cause problems with content getting cut off, in which case you might want to try this alternative method:
ORA-12528: TNS Listener: all appropriate instances are blocking new connections. Instance "CLRExtProc", status UNKNOWN
I had this error message with boot2docker on windows with the docker-oracle-xe-11g image (https://registry.hub.docker.com/u/wnameless/oracle-xe-11g/).
The reason was that the virtual box disk was full (check with boot2docker.exe ssh df). Deleting old images and restarting the container solved the problem.
Convert datetime to valid JavaScript date
Just use Date.parse() which returns a Number, then use new Date() to parse it:
var thedate = new Date(Date.parse("2011-07-14 11:23:00"));
Check if list<t> contains any of another list
If both the list are too big and when we use lamda expression then it will take a long time to fetch . Better to use linq in this case to fetch parameters list:
var items = (from x in parameters
join y in myStrings on x.Source equals y
select x)
.ToList();
Is there a way to get a <button> element to link to a location without wrapping it in an <a href ... tag?
<form action="portfolio.html">
<button type="link" class="btn btn-primary btn-lg">View Work</button>
</form>
I just figured this out, and it links perfectly to another page without having my default link settings over ride my button classes! :)
Combine Points with lines with ggplot2
A small change to Paul's code so that it doesn't return the error mentioned above.
dat = melt(subset(iris, select = c("Sepal.Length","Sepal.Width", "Species")),
id.vars = "Species")
dat$x <- c(1:150, 1:150)
ggplot(aes(x = x, y = value, color = variable), data = dat) +
geom_point() + geom_line()
R error "sum not meaningful for factors"
The error comes when you try to call sum(x) and x is a factor.
What that means is that one of your columns, though they look like numbers are actually factors (what you are seeing is the text representation)
simple fix, convert to numeric. However, it needs an intermeidate step of converting to character first. Use the following:
family[, 1] <- as.numeric(as.character( family[, 1] ))
family[, 3] <- as.numeric(as.character( family[, 3] ))
For a detailed explanation of why the intermediate as.character step is needed, take a look at this question: How to convert a factor to integer\numeric without loss of information?
Installing a pip package from within a Jupyter Notebook not working
This worked for me in Jupyter nOtebook /Mac Platform /Python 3 :
import sys
!{sys.executable} -m pip install -r requirements.txt
How to trigger a file download when clicking an HTML button or JavaScript
For the button you can do
<form method="get" action="file.doc">
<button type="submit">Download!</button>
</form>
Delete/Reset all entries in Core Data?
Several good answers to this question. Here's a nice concise one. The first two lines delete the sqlite database. Then the for: loop deletes any objects in the managedObjectContext memory.
NSURL *storeURL = [[(FXYAppDelegate*)[[UIApplication sharedApplication] delegate] applicationDocumentsDirectory] URLByAppendingPathComponent:@"AppName.sqlite"];
[[NSFileManager defaultManager] removeItemAtURL:storeURL error:nil];
for (NSManagedObject *ct in [self.managedObjectContext registeredObjects]) {
[self.managedObjectContext deleteObject:ct];
}
how to enable sqlite3 for php?
The accepted answer is not complete without the remainder of instructions (paraphrased below) from the forum thread linked to:
cd /etc/php5/conf.d
cat > sqlite3.ini
# configuration for php SQLite3 module
extension=sqlite3.so
^D
sudo /etc/init.d/apache2 restart
How to check if directory exist using C++ and winAPI
If linking to the shell Lightweight API (shlwapi.dll) is ok for you, you can use the PathIsDirectory function
Mongodb find() query : return only unique values (no duplicates)
I think you can use db.collection.distinct(fields,query)
You will be able to get the distinct values in your case for NetworkID.
It should be something like this :
Db.collection.distinct('NetworkID')
Setting values of input fields with Angular 6
You should use the following:
<td><input id="priceInput-{{orderLine.id}}" type="number" [(ngModel)]="orderLine.price"></td>
You will need to add the FormsModule to your app.module in the inputs section as follows:
import { FormsModule } from '@angular/forms';
@NgModule({
declarations: [
...
],
imports: [
BrowserModule,
FormsModule
],
..
The use of the brackets around the ngModel are as follows:
The
[]show that it is taking an input from your TS file. This input should be a public member variable. A one way binding from TS to HTML.The
()show that it is taking output from your HTML file to a variable in the TS file. A one way binding from HTML to TS.The
[()]are both (e.g. a two way binding)
See here for more information: https://angular.io/guide/template-syntax
I would also suggest replacing id="priceInput-{{orderLine.id}}" with something like this [id]="getElementId(orderLine)" where getElementId(orderLine) returns the element Id in the TS file and can be used anywere you need to reference the element (to avoid simple bugs like calling it priceInput1 in one place and priceInput-1 in another. (if you still need to access the input by it's Id somewhere else)
R: += (plus equals) and ++ (plus plus) equivalent from c++/c#/java, etc.?
R doesn't have a concept of increment operator (as for example ++ in C). However, it is not difficult to implement one yourself, for example:
inc <- function(x)
{
eval.parent(substitute(x <- x + 1))
}
In that case you would call
x <- 10
inc(x)
However, it introduces function call overhead, so it's slower than typing x <- x + 1 yourself. If I'm not mistaken increment operator was introduced to make job for compiler easier, as it could convert the code to those machine language instructions directly.
UPDATE with CASE and IN - Oracle
You said that budgetpost is alphanumeric. That means it is looking for comparisons against strings. You should try enclosing your parameters in single quotes (and you are missing the final THEN in the Case expression).
UPDATE tab1
SET budgpost_gr1= CASE
WHEN (budgpost in ('1001','1012','50055')) THEN 'BP_GR_A'
WHEN (budgpost in ('5','10','98','0')) THEN 'BP_GR_B'
WHEN (budgpost in ('11','876','7976','67465')) THEN 'What?'
ELSE 'Missing'
END
How can I check MySQL engine type for a specific table?
If you are a GUI guy and just want to find it in PhpMyAdmin, than pick the table of your choice and head over the Operations tab >> Table options >> Storage Engine.
You can even change it from there using the drop-down options list.
PS: This guide is based on version 4.8 of PhpMyAdmin. Can't guarantee the same path for very older versions.
Multiple submit buttons on HTML form – designate one button as default
You should not be using buttons of the same name. It's bad semantics. Instead, you should modify your backend to look for different name values being set:
<input type="submit" name="COMMAND_PREV" value="‹ Prev">
<input type="submit" name="COMMAND_SAVE" value="Save">
<input type="reset" name="NOTHING" value="Reset">
<input type="submit" name="COMMAND_NEXT" value="Next ›">
<input type="button" name="NOTHING" value="Skip ›" onclick="window.location = 'yada-yada.asp';">
Since I don't know what language you are using on the backend, I'll give you some pseudocode:
if (input name COMMAND_PREV is set) {
} else if (input name COMMAND_SAVE is set) {
} else if (input name COMMENT_NEXT is set) {
}
TypeError: no implicit conversion of Symbol into Integer
You probably meant this:
require 'active_support/core_ext' # for titleize
myHash = {company_name:"MyCompany", street:"Mainstreet", postcode:"1234", city:"MyCity", free_seats:"3"}
def cleanup string
string.titleize
end
def format(hash)
output = {}
output[:company_name] = cleanup(hash[:company_name])
output[:street] = cleanup(hash[:street])
output
end
format(myHash) # => {:company_name=>"My Company", :street=>"Mainstreet"}
Please read documentation on Hash#each
Is there a way to "limit" the result with ELOQUENT ORM of Laravel?
Create a Game model which extends Eloquent and use this:
Game::take(30)->skip(30)->get();
take() here will get 30 records and skip() here will offset to 30 records.
In recent Laravel versions you can also use:
Game::limit(30)->offset(30)->get();
iPhone Navigation Bar Title text color
In order to make Erik B's great solution more useable across the different UIVIewCOntrollers of your app I recommend adding a category for UIViewController and declare his setTitle:title method inside. Like this you will get the title color change on all view controllers without the need of duplication.
One thing to note though is that you do not need [super setTItle:tilte]; in Erik's code and that you will need to explicitly call self.title = @"my new title" in your view controllers for this method to be called
@implementation UIViewController (CustomeTitleColor)
- (void)setTitle:(NSString *)title
{
UILabel *titleView = (UILabel *)self.navigationItem.titleView;
if (!titleView) {
titleView = [[UILabel alloc] initWithFrame:CGRectZero];
titleView.backgroundColor = [UIColor clearColor];
titleView.font = [UIFont boldSystemFontOfSize:20.0];
titleView.shadowColor = [UIColor colorWithWhite:0.0 alpha:0.5];
titleView.textColor = [UIColor blueColor]; // Change to desired color
self.navigationItem.titleView = titleView;
[titleView release];
}
titleView.text = title;
[titleView sizeToFit];
}
@end
How to use `replace` of directive definition?
Replace [True | False (default)]
Effect
1. Replace the directive element.
Dependency:
1. When replace: true, the template or templateUrl must be required.
How does inline Javascript (in HTML) work?
There seems to be a lot of bad practice being thrown around Event Handler Attributes. Bad practice is not knowing and using available features where it is most appropriate. The Event Attributes are fully W3C Documented standards and there is nothing bad practice about them. It's no different than placing inline styles, which is also W3C Documented and can be useful in times. Whether you place it wrapped in script tags or not, it's gonna be interpreted the same way.
https://www.w3.org/TR/html5/webappapis.html#event-handler-idl-attributes
WCF Service Client: The content type text/html; charset=utf-8 of the response message does not match the content type of the binding
My solution was rather simple: backup everything from the application, uninstall it, delete everything from the remaining folders (but not the folders so I won't have to grant the same permissions again) then copy back the files from the backup.
How to enable CORS in apache tomcat
Just to add a bit of extra info over the right solution. Be aware that you'll need this class org.apache.catalina.filters.CorsFilter. So in order to have it, if your tomcat is not 7.0.41 or higher, download 'tomcat-catalina.7.0.41.jar' or higher ( you can do it from http://mvnrepository.com/artifact/org.apache.tomcat/tomcat-catalina ) and put it in the 'lib' folder inside Tomcat installation folders. I actually used 7.0.42 Hope it helps!
How can I check if a string is null or empty in PowerShell?
PowerShell 2.0 replacement for [string]::IsNullOrWhiteSpace() is string -notmatch "\S"
("\S" = any non-whitespace character)
> $null -notmatch "\S"
True
> " " -notmatch "\S"
True
> " x " -notmatch "\S"
False
Performance is very close:
> Measure-Command {1..1000000 |% {[string]::IsNullOrWhiteSpace(" ")}}
TotalMilliseconds : 3641.2089
> Measure-Command {1..1000000 |% {" " -notmatch "\S"}}
TotalMilliseconds : 4040.8453
Maven does not find JUnit tests to run
Such problem might occur when you use surfire plugin 3.x.x+ with JUnit5 and by mistake annotate the test class with @Test annotation from JUnit4.
Use: org.junit.jupiter.api.Test (JUnit5) instead of org.junit.Test (Junit4)
NOTE: this might be hard to notice as the IDE might run this wihout problems just as JUnit4 test.
Execute a shell script in current shell with sudo permission
I think you are confused about the difference between sourcing and executing a script.
Executing a script means creating a new process, and running the program. The program can be a shell script, or any other type of program. As it is a sub process, any environmental variables changed in the program will not affect the shell.
Sourcing a script can only be used with a bash script (if you are running bash). It effectively types the commands in as if you did them. This is useful as it lets a script change environmental variables in the shell.
Running a script is simple, you just type in the path to the script. . is the current directory. So ./script.sh will execute the file script.sh in the current directory. If the command is a single file (eg script.sh), it will check all the folders in the PATH variable to find the script. Note that the current directory isn't in PATH, so you can't execute a file script.sh in the current directory by running script.sh, you need to run ./script.sh (unless the current directory is in the PATH, eg you can run ls while in the /bin dir).
Sourcing a script doesn't use the PATH, and just searches for the path. Note that source isn't a program - otherwise it wouldn't be able to change environmental variables in the current shell. It is actually a bash built in command. Search /bin and /usr/bin - you won't find a source program there. So to source a file script.sh in the current directory, you just use source script.sh.
How does sudo interact with this? Well sudo takes a program, and executes it as root. Eg sudo ./script.sh executes script.sh in a sub process but running as root.
What does sudo source ./script.sh do however? Remember source isn't a program (rather a shell builtin)? Sudo expects a program name though, so it searches for a program named source. It doesn't find one, and so fails. It isn't possible to source a file running as root, without creating a new subprocess, as you cannot change the runner of a program (in this case, bash) after it has started.
I'm not sure what you actually wanted, but hopefully this will clear it up for you.
Here is a concrete example. Make the file script.sh in your current directory with the contents:
#!/bin/bash
export NEW_VAR="hello"
whoami
echo "Some text"
Make it executable with chmod +x script.sh.
Now observe what happens with bash:
> ./script.sh
david
Some text
> echo $NEW_VAR
> sudo ./script.sh
root
Some text
> echo $NEW_VAR
> source script.sh
david
Some text
> echo $NEW_VAR
hello
> sudo source script.sh
sudo: source: command not found
How to read data from a zip file without having to unzip the entire file
Here is how a UTF8 text file can be read from a zip archive into a string variable (.NET Framework 4.5 and up):
string zipFileFullPath = "{{TypeYourZipFileFullPathHere}}";
string targetFileName = "{{TypeYourTargetFileNameHere}}";
string text = new string(
(new System.IO.StreamReader(
System.IO.Compression.ZipFile.OpenRead(zipFileFullPath)
.Entries.Where(x => x.Name.Equals(targetFileName,
StringComparison.InvariantCulture))
.FirstOrDefault()
.Open(), Encoding.UTF8)
.ReadToEnd())
.ToArray());
How do I check for null values in JavaScript?
you can use try catch finally
try {
document.getElementById("mydiv").innerHTML = 'Success' //assuming "mydiv" is undefined
} catch (e) {
if (e.name.toString() == "TypeError") //evals to true in this case
//do something
} finally {}
you can also throw your own errors. See this.
Auto-fit TextView for Android
Ok I have used the last week to massively rewrite my code to precisely fit your test. You can now copy this 1:1 and it will immediately work - including setSingleLine(). Please remember to adjust MIN_TEXT_SIZE and MAX_TEXT_SIZE if you're going for extreme values.
Converging algorithm looks like this:
for (float testSize; (upperTextSize - lowerTextSize) > mThreshold;) {
// Go to the mean value...
testSize = (upperTextSize + lowerTextSize) / 2;
// ... inflate the dummy TextView by setting a scaled textSize and the text...
mTestView.setTextSize(TypedValue.COMPLEX_UNIT_SP, testSize / mScaledDensityFactor);
mTestView.setText(text);
// ... call measure to find the current values that the text WANTS to occupy
mTestView.measure(MeasureSpec.UNSPECIFIED, MeasureSpec.UNSPECIFIED);
int tempHeight = mTestView.getMeasuredHeight();
// ... decide whether those values are appropriate.
if (tempHeight >= targetFieldHeight) {
upperTextSize = testSize; // Font is too big, decrease upperSize
}
else {
lowerTextSize = testSize; // Font is too small, increase lowerSize
}
}
And the whole class can be found here.
The result is very flexible now. This works the same declared in xml like so:
<com.example.myProject.AutoFitText
android:id="@+id/textView"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="4"
android:text="@string/LoremIpsum" />
... as well as built programmatically like in your test.
I really hope you can use this now. You can call setText(CharSequence text) now to use it by the way. The class takes care of stupendously rare exceptions and should be rock-solid. The only thing that the algorithm does not support yet is:
- Calls to
setMaxLines(x)wherex >= 2
But I have added extensive comments to help you build this if you wish to!
Please note:
If you just use this normally without limiting it to a single line then there might be word-breaking as you mentioned before. This is an Android feature, not the fault of the AutoFitText. Android will always break words that are too long for a TextView and it's actually quite a convenience. If you want to intervene here than please see my comments and code starting at line 203. I have already written an adequate split and the recognition for you, all you'd need to do henceforth is to devide the words and then modify as you wish.
In conclusion: You should highly consider rewriting your test to also support space chars, like so:
final Random _random = new Random();
final String ALLOWED_CHARACTERS = "qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM1234567890";
final int textLength = _random.nextInt(80) + 20;
final StringBuilder builder = new StringBuilder();
for (int i = 0; i < textLength; ++i) {
if (i % 7 == 0 && i != 0) {
builder.append(" ");
}
builder.append(ALLOWED_CHARACTERS.charAt(_random.nextInt(ALLOWED_CHARACTERS.length())));
}
((AutoFitText) findViewById(R.id.textViewMessage)).setText(builder.toString());
This will produce very beutiful (and more realistic) results.
You will find commenting to get you started in this matter as well.
Good luck and best regards
Equals(=) vs. LIKE
To address the original question regarding performance, it comes down to index utilization. When a simple table scan occurs, "LIKE" and "=" are identical. When indexes are involved, it depends on how the LIKE clause is formed. More specifically, what is the location of the wildcard(s)?
Consider the following:
CREATE TABLE test(
txt_col varchar(10) NOT NULL
)
go
insert test (txt_col)
select CONVERT(varchar(10), row_number() over (order by (select 1))) r
from master..spt_values a, master..spt_values b
go
CREATE INDEX IX_test_data
ON test (txt_col);
go
--Turn on Show Execution Plan
set statistics io on
--A LIKE Clause with a wildcard at the beginning
DBCC DROPCLEANBUFFERS
SELECT txt_Col from test where txt_col like '%10000'
--Results in
--Table 'test'. Scan count 3, logical reads 15404, physical reads 2, read-ahead reads 15416, lob logical reads 0, lob physical reads 0, lob read-ahead reads 0.
--Index SCAN is 85% of Query Cost
--A LIKE Clause with a wildcard in the middle
DBCC DROPCLEANBUFFERS
SELECT txt_Col from test where txt_col like '1%99'
--Results in
--Table 'test'. Scan count 1, logical reads 3023, physical reads 3, read-ahead reads 3018, lob logical reads 0, lob physical reads 0, lob read-ahead reads 0.
--Index Seek is 100% of Query Cost for test data, but it may result in a Table Scan depending on table size/structure
--A LIKE Clause with no wildcards
DBCC DROPCLEANBUFFERS
SELECT txt_Col from test where txt_col like '10000'
--Results in
--Table 'test'. Scan count 1, logical reads 3, physical reads 2, read-ahead reads 0, lob logical reads 0, lob physical reads 0, lob read-ahead reads 0.
--Index Seek is 100% of Query Cost
GO
--an "=" clause = does Index Seek same as above
DBCC DROPCLEANBUFFERS
SELECT txt_Col from test where txt_col = '10000'
--Results in
--Table 'test'. Scan count 1, logical reads 3, physical reads 2, read-ahead reads 0, lob logical reads 0, lob physical reads 0, lob read-ahead reads 0.
--Index Seek is 100% of Query Cost
GO
DROP TABLE test
There may be also negligible difference in the creation of the query plan when using "=" vs "LIKE".
How to install a private NPM module without my own registry?
Structure your code in an accessible fashion like below. If this is possible for you.
NodeProjs\Apps\MainApp\package.json
NodeProjs\Modules\DataModule\package.json
Within MainApp @ NodProjs\Apps\MainApp\
npm install --S ../../Modules/DataModule
You may need to update package.json as:
"dependencies": {
"datamodule": "../../Modules/DataModule"
}
This worked for my situation.
libstdc++-6.dll not found
I placed the libstdc++-6.dll file in the same folder where exe file is generated.
How do I change Android Studio editor's background color?
You can change it by going File => Settings (Shortcut CTRL+ ALT+ S) , from Left panel Choose Appearance , Now from Right Panel choose theme.
Android Studio 2.1
Preference -> Search for Appearance -> UI options , Click on DropDown Theme
Android 2.2
Android studio -> File -> Settings -> Appearance & Behavior -> Look for UI Options
EDIT :
Import External Themes
You can download custom theme from this website. Choose your theme, download it. To set theme Go to Android studio -> File -> Import Settings -> Choose the
.jarfile downloaded.
Array copy values to keys in PHP
Be careful, the solution proposed with $a = array_combine($a, $a); will not work for numeric values.
I for example wanted to have a memory array(128,256,512,1024,2048,4096,8192,16384) to be the keys as well as the values however PHP manual states:
If the input arrays have the same string keys, then the later value for that key will overwrite the previous one. If, however, the arrays contain numeric keys, the later value will not overwrite the original value, but will be appended.
So I solved it like this:
foreach($array as $key => $val) {
$new_array[$val]=$val;
}
grep's at sign caught as whitespace
After some time with Google I asked on the ask ubuntu chat room.
A user there was king enough to help me find the solution I was looking for and i wanted to share so that any following suers running into this may find it:
grep -P "(^|\s)abc(\s|$)" gives the result I was looking for. -P is an experimental implementation of perl regexps.
grepping for abc and then using filters like grep -v '@abc' (this is far from perfect...) should also work, but my patch does something similar.
Can't open config file: /usr/local/ssl/openssl.cnf on Windows
SOLUTION!
just set -config parameter location correctly, i.e :
openssl .................... -config C:\bin\apache\apache2.4.9\conf\openssl.cnf
Moment js date time comparison
for date-time comparison, you can use valueOf function of the moment which provides milliseconds of the date-time, which is best for comparison:
let date1 = moment('01-02-2020','DD-MM-YYYY').valueOf()_x000D_
let date2 = moment('11-11-2012','DD-MM-YYYY').valueOf()_x000D_
_x000D_
// alert((date1 > date2 ? 'date1' : 'date2') + " is greater..." )_x000D_
_x000D_
if (date1 > date2) {_x000D_
alert("date1 is greater..." )_x000D_
} else {_x000D_
alert("date2 is greater..." )_x000D_
}<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.24.0/moment.min.js"></script>Converting HTML element to string in JavaScript / JQuery
What you want is the outer HTML, not the inner HTML :
$('<some element/>')[0].outerHTML;
function declaration isn't a prototype
Quick answer: change int testlib() to int testlib(void) to specify that the function takes no arguments.
A prototype is by definition a function declaration that specifies the type(s) of the function's argument(s).
A non-prototype function declaration like
int foo();
is an old-style declaration that does not specify the number or types of arguments. (Prior to the 1989 ANSI C standard, this was the only kind of function declaration available in the language.) You can call such a function with any arbitrary number of arguments, and the compiler isn't required to complain -- but if the call is inconsistent with the definition, your program has undefined behavior.
For a function that takes one or more arguments, you can specify the type of each argument in the declaration:
int bar(int x, double y);
Functions with no arguments are a special case. Logically, empty parentheses would have been a good way to specify that an argument but that syntax was already in use for old-style function declarations, so the ANSI C committee invented a new syntax using the void keyword:
int foo(void); /* foo takes no arguments */
A function definition (which includes code for what the function actually does) also provides a declaration. In your case, you have something similar to:
int testlib()
{
/* code that implements testlib */
}
This provides a non-prototype declaration for testlib. As a definition, this tells the compiler that testlib has no parameters, but as a declaration, it only tells the compiler that testlib takes some unspecified but fixed number and type(s) of arguments.
If you change () to (void) the declaration becomes a prototype.
The advantage of a prototype is that if you accidentally call testlib with one or more arguments, the compiler will diagnose the error.
(C++ has slightly different rules. C++ doesn't have old-style function declarations, and empty parentheses specifically mean that a function takes no arguments. C++ supports the (void) syntax for consistency with C. But unless you specifically need your code to compile both as C and as C++, you should probably use the () in C++ and the (void) syntax in C.)
Is this the right way to clean-up Fragment back stack when leaving a deeply nested stack?
Well there are a few ways to go about this depending on the intended behavior, but this link should give you all the best solutions and not surprisingly is from Dianne Hackborn
http://groups.google.com/group/android-developers/browse_thread/thread/d2a5c203dad6ec42
Essentially you have the following options
- Use a name for your initial back stack state and use
FragmentManager.popBackStack(String name, FragmentManager.POP_BACK_STACK_INCLUSIVE). - Use
FragmentManager.getBackStackEntryCount()/getBackStackEntryAt().getId()to retrieve the ID of the first entry on the back stack, andFragmentManager.popBackStack(int id, FragmentManager.POP_BACK_STACK_INCLUSIVE). FragmentManager.popBackStack(null, FragmentManager.POP_BACK_STACK_INCLUSIVE)is supposed to pop the entire back stack... I think the documentation for that is just wrong. (Actually I guess it just doesn't cover the case where you pass inPOP_BACK_STACK_INCLUSIVE),
How to generate classes from wsdl using Maven and wsimport?
Try to wrap wsdlLocation in wsdlUrls
<wsdlUrls>
<wsdlLocation>http://url</wsdlLocation>
</wsdlUrls>
Hide vertical scrollbar in <select> element
For future reference if somebody else runs into this problem. I found a solution that should work in all modern browsers:
select{
scrollbar-width: none; /*For Firefox*/;
-ms-overflow-style: none; /*For Internet Explorer 10+*/;
}
select:-webkit-scrollbar { /*For WebKit Browsers*/
width: 0;
height: 0;
}
Basically this way the scrollbar is set to a width of 0 and is hence not displayed.
How to check command line parameter in ".bat" file?
Look at http://ss64.com/nt/if.html for an answer; the command is IF [%1]==[] GOTO NO_ARGUMENT or similar.
Setting a Sheet and cell as variable
Yes, set the cell as a RANGE object one time and then use that RANGE object in your code:
Sub RangeExample()
Dim MyRNG As Range
Set MyRNG = Sheets("Sheet1").Cells(23, 4)
Debug.Print MyRNG.Value
End Sub
Alternately you can simply store the value of that cell in memory and reference the actual value, if that's all you really need. That variable can be Long or Double or Single if numeric, or String:
Sub ValueExample()
Dim MyVal As String
MyVal = Sheets("Sheet1").Cells(23, 4).Value
Debug.Print MyVal
End Sub
Horizontal list items
A much better way is to use inline-block, because you don't need to use clear:both at the end of your list anymore.
Try this:
<ul>
<li>
<a href="#">some item</a>
</li>
<li>
<a href="#">another item</a>
</li>
</ul>
CSS:
ul > li{
display:inline-block;
}
Have a look at it here : http://jsfiddle.net/shahverdy/4N6Ap/
How do I import the javax.servlet API in my Eclipse project?
Little bit difference from Hari:
Right click on project ---> Properties ---> Java Build Path ---> Add Library... ---> Server Runtime ---> Apache Tomcat ----> Finish.
How should I remove all the leading spaces from a string? - swift
To remove leading and trailing whitespaces:
let trimmedString = string.stringByTrimmingCharactersInSet(NSCharacterSet.whitespaceCharacterSet())
Swift 3 / Swift 4:
let trimmedString = string.trimmingCharacters(in: .whitespaces)
Linux bash script to extract IP address
If you want to get a space separated list of your IPs, you can use the hostname command with the --all-ip-addresses (short -I) flag
hostname -I
as described here: Putting IP Address into bash variable. Is there a better way?
what is numeric(18, 0) in sql server 2008 r2
The first value is the precision and the second is the scale, so 18,0 is essentially 18 digits with 0 digits after the decimal place. If you had 18,2 for example, you would have 18 digits, two of which would come after the decimal...
example of 18,2: 1234567890123456.12
There is no functional difference between numeric and decimal, other that the name and I think I recall that numeric came first, as in an earlier version.
And to answer, "can I add (-10) in that column?" - Yes, you can.
python selenium click on button
The following debugging process helped me solve a similar issue.
with open("output_init.txt", "w") as text_file:
text_file.write(driver.page_source.encode('ascii','ignore'))
xpath1 = "the xpath of the link you want to click on"
destination_page_link = driver.find_element_by_xpath(xpath1)
destination_page_link.click()
with open("output_dest.txt", "w") as text_file:
text_file.write(driver.page_source.encode('ascii','ignore'))
You should then have two textfiles with the initial page you were on ('output_init.txt') and the page you were forwarded to after clicking the button ('output_dest.txt'). If they're the same, then yup, your code did not work. If they aren't, then your code worked, but you have another issue. The issue for me seemed to be that the necessary javascript that transformed the content to produce my hook was not yet executed.
Your options as I see it:
- Have the driver execute the javascript and then call your find element code. Look for more detailed answers on this on stackoverflow, as I didn't follow this approach.
- Just find a comparable hook on the 'output_dest.txt' that will produce the same result, which is what I did.
- Try waiting a bit before clicking anything:
xpath2 = "your xpath that you are going to click on"
WebDriverWait(driver, timeout=5).until(lambda x: x.find_element_by_xpath(xpath2))
The xpath approach isn't necessarily better, I just prefer it, you can also use your selector approach.
Efficiently getting all divisors of a given number
There is no efficient way in the sense of algorithmic complexity (an algorithm with polynomial complexity) known in science by now. So iterating until the square root as already suggested is mostly as good as you can be.
Mainly because of this, a large part of the currently used cryptography is based on the assumption that it is very time consuming to compute a prime factorization of any given integer.
Auto start node.js server on boot
This isn't something to configure in node.js at all, this is purely OS responsibility (Windows in your case). The most reliable way to achieve this is through a Windows Service.
There's this super easy module that installs a node script as a windows service, it's called node-windows (npm, github, documentation). I've used before and worked like a charm.
var Service = require('node-windows').Service;
// Create a new service object
var svc = new Service({
name:'Hello World',
description: 'The nodejs.org example web server.',
script: 'C:\\path\\to\\helloworld.js'
});
// Listen for the "install" event, which indicates the
// process is available as a service.
svc.on('install',function(){
svc.start();
});
svc.install();
p.s.
I found the thing so useful that I built an even easier to use wrapper around it (npm, github).
Installing it:
npm install -g qckwinsvc
Installing your service:
> qckwinsvc
prompt: Service name: [name for your service]
prompt: Service description: [description for it]
prompt: Node script path: [path of your node script]
Service installed
Uninstalling your service:
> qckwinsvc --uninstall
prompt: Service name: [name of your service]
prompt: Node script path: [path of your node script]
Service stopped
Service uninstalled
ERROR:'keytool' is not recognized as an internal or external command, operable program or batch file
Locate where your keytool.exe inside java installation folder
mine is
C:\Program Files\Java\jre1.8.0_181\bin open cmd anywhere and run
SET PATH=%PATH%;C:\Program Files\Java\jre1.8.0_181\bin;
change the path to the path you located your keytool.exe
Why is this printing 'None' in the output?
Because there are two print statements. First is inside function and second is outside function. When function not return any thing that time it return None value.
Use return statement at end of function to return value.
e.g.:
Return None value.
>>> def test1():
... print "In function."
...
>>> a = test1()
In function.
>>> print a
None
>>>
>>> print test1()
In function.
None
>>>
>>> test1()
In function.
>>>
Use return statement
>>> def test():
... return "ACV"
...
>>> print test()
ACV
>>>
>>> a = test()
>>> print a
ACV
>>>
How to receive serial data using android bluetooth
try this code :
Activity:
package Android.Arduino.Bluetooth;
import android.app.Activity;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothSocket;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.view.View;
import android.widget.TextView;
import android.widget.EditText;
import android.widget.Button;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Set;
import java.util.UUID;
public class MainActivity extends Activity
{
TextView myLabel;
EditText myTextbox;
BluetoothAdapter mBluetoothAdapter;
BluetoothSocket mmSocket;
BluetoothDevice mmDevice;
OutputStream mmOutputStream;
InputStream mmInputStream;
Thread workerThread;
byte[] readBuffer;
int readBufferPosition;
int counter;
volatile boolean stopWorker;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button openButton = (Button)findViewById(R.id.open);
Button sendButton = (Button)findViewById(R.id.send);
Button closeButton = (Button)findViewById(R.id.close);
myLabel = (TextView)findViewById(R.id.label);
myTextbox = (EditText)findViewById(R.id.entry);
//Open Button
openButton.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
try
{
findBT();
openBT();
}
catch (IOException ex) { }
}
});
//Send Button
sendButton.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
try
{
sendData();
}
catch (IOException ex) { }
}
});
//Close button
closeButton.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
try
{
closeBT();
}
catch (IOException ex) { }
}
});
}
void findBT()
{
mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
if(mBluetoothAdapter == null)
{
myLabel.setText("No bluetooth adapter available");
}
if(!mBluetoothAdapter.isEnabled())
{
Intent enableBluetooth = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableBluetooth, 0);
}
Set<BluetoothDevice> pairedDevices = mBluetoothAdapter.getBondedDevices();
if(pairedDevices.size() > 0)
{
for(BluetoothDevice device : pairedDevices)
{
if(device.getName().equals("MattsBlueTooth"))
{
mmDevice = device;
break;
}
}
}
myLabel.setText("Bluetooth Device Found");
}
void openBT() throws IOException
{
UUID uuid = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB"); //Standard SerialPortService ID
mmSocket = mmDevice.createRfcommSocketToServiceRecord(uuid);
mmSocket.connect();
mmOutputStream = mmSocket.getOutputStream();
mmInputStream = mmSocket.getInputStream();
beginListenForData();
myLabel.setText("Bluetooth Opened");
}
void beginListenForData()
{
final Handler handler = new Handler();
final byte delimiter = 10; //This is the ASCII code for a newline character
stopWorker = false;
readBufferPosition = 0;
readBuffer = new byte[1024];
workerThread = new Thread(new Runnable()
{
public void run()
{
while(!Thread.currentThread().isInterrupted() && !stopWorker)
{
try
{
int bytesAvailable = mmInputStream.available();
if(bytesAvailable > 0)
{
byte[] packetBytes = new byte[bytesAvailable];
mmInputStream.read(packetBytes);
for(int i=0;i<bytesAvailable;i++)
{
byte b = packetBytes[i];
if(b == delimiter)
{
byte[] encodedBytes = new byte[readBufferPosition];
System.arraycopy(readBuffer, 0, encodedBytes, 0, encodedBytes.length);
final String data = new String(encodedBytes, "US-ASCII");
readBufferPosition = 0;
handler.post(new Runnable()
{
public void run()
{
myLabel.setText(data);
}
});
}
else
{
readBuffer[readBufferPosition++] = b;
}
}
}
}
catch (IOException ex)
{
stopWorker = true;
}
}
}
});
workerThread.start();
}
void sendData() throws IOException
{
String msg = myTextbox.getText().toString();
msg += "\n";
mmOutputStream.write(msg.getBytes());
myLabel.setText("Data Sent");
}
void closeBT() throws IOException
{
stopWorker = true;
mmOutputStream.close();
mmInputStream.close();
mmSocket.close();
myLabel.setText("Bluetooth Closed");
}
}
AND Here the layout:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
tools:ignore="TextFields,HardcodedText" >
<TextView
android:id="@+id/label"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Type here:" />
<EditText
android:id="@+id/entry"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="@id/label"
android:background="@android:drawable/editbox_background" />
<Button
android:id="@+id/open"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_below="@id/entry"
android:layout_marginLeft="10dip"
android:text="Open" />
<Button
android:id="@+id/send"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="@id/open"
android:layout_toLeftOf="@id/open"
android:text="Send" />
<Button
android:id="@+id/close"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="@id/send"
android:layout_toLeftOf="@id/send"
android:text="Close" />
</RelativeLayout>
Here for Manifest: add to Application
// permission must be enabled complete
<manifest ....>
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
<uses-permission android:name="android.permission.BLUETOOTH" />
<application>
</application>
</manifest>
Convert utf8-characters to iso-88591 and back in PHP
set meta tag in head as
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
use the link http://www.i18nqa.com/debug/utf8-debug.html to replace the symbols character you want.
then use str_replace like
$find = array('“', '’', '…', '—', '–', '‘', 'é', 'Â', '•', 'Ëœ', 'â€'); // en dash
$replace = array('“', '’', '…', '—', '–', '‘', 'é', '', '•', '˜', '”');
$content = str_replace($find, $replace, $content);
Its the method i use and help alot. Thanks!
How to change the version of the 'default gradle wrapper' in IntelliJ IDEA?
First, let gradle set the correct distribution Url
cd projectDirectory
./gradlew wrapper --gradle-version 2.3.0
Then - might not be needed but that's what I did - edit the project's build.gradle to match the version
dependencies {
classpath 'com.android.tools.build:gradle:2.3.0'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
Finally, delete the folders .gradle and gradle and the files gradlew and gradlew.bat. (Original Answer)
Now, rebuild the project.
As the other answers did not suffice for me and the comment pointing out these additional steps is easy to overlook, here as a separate answer
How to conclude your merge of a file?
I had the same error and i did followed article found on google solves my issue. You have not concluded your merge
How to set the first option on a select box using jQuery?
Use this code to reset all selection fields to the default option, where the attribute selected is defined.
<select id="name1" >
<option value="1">Text 1</option>
<option value="2" selected="selected" >Default Text 2</option>
<option value="3">Text 3</option>
</select>
<select id="name2" >
<option value="1">Text 1</option>
<option value="2">Text 2</option>
<option value="3" selected="selected" >Default Text 3</option>
</select>
<script>
$('select').each( function() {
$(this).val( $(this).find("option[selected]").val() );
});
</script>
Copy an entire worksheet to a new worksheet in Excel 2010
If anyone has, like I do, an Estimating workbook with a default number of visible pricing sheets, a Summary and a larger number of hidden and 'protected' worksheets full of sensitive data but may need to create additional visible worksheets to arrive at a proper price, I have variant of the above responses that creates the said visible worksheets based on a protected hidden "Master". I have used the code provided by @/jean-fran%c3%a7ois-corbett and @thanos-a in combination with simple VBA as shown below.
Sub sbInsertWorksheetAfter()
'This adds a new visible worksheet after the last visible worksheet
ThisWorkbook.Sheets.Add After:=Worksheets(Worksheets.Count)
'This copies the content of the HIDDEN "Master" worksheet to the new VISIBLE ActiveSheet just created
ThisWorkbook.Sheets("Master").Cells.Copy _
Destination:=ActiveSheet.Cells
'This gives the the new ActiveSheet a default name
With ActiveSheet
.Name = Sheet12.Name & " copied"
End With
'This changes the name of the ActiveSheet to the user's preference
Dim sheetname As String
With ActiveSheet
sheetname = InputBox("Enter name of this Worksheet")
.Name = sheetname
End With
End Sub
Multiple Inheritance in C#
Yes using Interface is a hassle because anytime we add a method in the class we have to add the signature in the interface. Also, what if we already have a class with a bunch of methods but no Interface for it? we have to manually create Interface for all the classes that we want to inherit from. And the worst thing is, we have to implement all methods in the Interfaces in the child class if the child class is to inherit from the multiple interface.
By following Facade design pattern we can simulate inheriting from multiple classes using accessors. Declare the classes as properties with {get;set;} inside the class that need to inherit and all public properties and methods are from that class, and in the constructor of the child class instantiate the parent classes.
For example:
namespace OOP
{
class Program
{
static void Main(string[] args)
{
Child somechild = new Child();
somechild.DoHomeWork();
somechild.CheckingAround();
Console.ReadLine();
}
}
public class Father
{
public Father() { }
public void Work()
{
Console.WriteLine("working...");
}
public void Moonlight()
{
Console.WriteLine("moonlighting...");
}
}
public class Mother
{
public Mother() { }
public void Cook()
{
Console.WriteLine("cooking...");
}
public void Clean()
{
Console.WriteLine("cleaning...");
}
}
public class Child
{
public Father MyFather { get; set; }
public Mother MyMother { get; set; }
public Child()
{
MyFather = new Father();
MyMother = new Mother();
}
public void GoToSchool()
{
Console.WriteLine("go to school...");
}
public void DoHomeWork()
{
Console.WriteLine("doing homework...");
}
public void CheckingAround()
{
MyFather.Work();
MyMother.Cook();
}
}
}
with this structure class Child will have access to all methods and properties of Class Father and Mother, simulating multiple inheritance, inheriting an instance of the parent classes. Not quite the same but it is practical.
How to overlay images
Here's a JQuery Technique with semi-transparent background.
HTML
<html>
<head>
<link rel="stylesheet" href="css/style.css" type="text/css" media="screen" title="no title" charset="utf-8">
<title>Image Gallery</title>
</head>
<body>
<h1>Image Gallery</h1>
<ul id="imageGallery">
<li><a href="images/refferal_machine.png"><img src="images/refferal_machine.png" width="100" alt="Refferal Machine By Matthew Spiel"></a></li>
<li><a href="images/space-juice.png"><img src="images/space-juice.png" width="100" alt="Space Juice by Mat Helme"></a></li>
<li><a href="images/education.png"><img src="images/education.png" width="100" alt="Education by Chris Michel"></a></li>
<li><a href="images/copy_mcrepeatsalot.png"><img src="images/copy_mcrepeatsalot.png" width="100" alt="Wanted: Copy McRepeatsalot by Chris Michel"></a></li>
<li><a href="images/sebastian.png"><img src="images/sebastian.png" width="100" alt="Sebastian by Mat Helme"></a></li>
<li><a href="images/skill-polish.png"><img src="images/skill-polish.png" width="100" alt="Skill Polish by Chris Michel"></a></li>
<li><a href="images/chuck.png"><img src="images/chuck.png" width="100" alt="Chuck by Mat Helme"></a></li>
<li><a href="images/library.png"><img src="images/library.png" width="100" alt="Library by Tyson Rosage"></a></li>
<li><a href="images/boat.png"><img src="images/boat.png" width="100" alt="Boat by Griffin Moore"></a></li>
<li><a href="images/illustrator_foundations.png"><img src="images/illustrator_foundations.png" width="100" alt="Illustrator Foundations by Matthew Spiel"></a></li>
<li><a href="images/treehouse_shop.jpg"><img src="images/treehouse_shop.jpg" width="100" alt="Treehouse Shop by Eric Smith"></a></li>
</ul>
<script src="http://code.jquery.com/jquery-1.11.0.min.js" type="text/javascript" charset="utf-8"></script>
<script src="js/app.js" type="text/javascript" charset="utf-8"></script>
</body>
</html>
CSS
/** Start Coding Here **/
#overlay {
background:rgba(0,0,0,0.7);
width:100%;
height:100%;
position:absolute;
top:0;
left:0;
display:none;
text-align:center;
}
#overlay img {
margin-top: 10%;
}
#overlay p {
color:white;
}
app.js
var $overlay = $('<div id="overlay"></div>');
var $image = $("<img>");
var $caption = $("<p></p>");
// 1. Capture the click event on a link to an image
$("#imageGallery a").click(function(event){
event.preventDefault();
var imageLocation = $(this).attr("href");
// 1.1 Show the overlay.
$overlay.show();
// 1.2 Update overlay with the image linked in the link
$image.attr("src", imageLocation);
// 1.3 Get child's alt attribute and set caption
var captionText = $(this).children("img").attr("alt");
$caption.text(captionText);
// 2. Add overlay
$("body").append($overlay);
// 2.1 An image to overlay
$overlay.append($image);
// 2.2 A caption to overlay
$overlay.append($caption);
});
//When overlay is clicked
$overlay.click(function(){
//Hide the overlay
$overlay.hide();
});
HTML 'td' width and height
Following width worked well in HTML5: -
<table >
<tr>
<th style="min-width:120px">Month</th>
<th style="min-width:60px">Savings</th>
</tr>
<tr>
<td>January</td>
<td>$100</td>
</tr>
<tr>
<td>February</td>
<td>$80</td>
</tr>
</table>
Please note that
- TD tag is without CSS style.
How to secure phpMyAdmin
Another solution is to use the config file without any settings. The first time you might have to include your mysql root login/password so it can install all its stuff but then remove it.
$cfg['Servers'][$i]['auth_type'] = 'cookie';
$cfg['Servers'][$i]['host'] = 'localhost';
$cfg['Servers'][$i]['connect_type'] = 'tcp';
$cfg['Servers'][$i]['compress'] = false;
$cfg['Servers'][$i]['extension'] = 'mysql';
Leaving it like that without any apache/lighhtpd aliases will just present to you a log in screen.
You can log in with root but it is advised to create other users and only allow root for local access. Also remember to use string passwords, even if short but with a capital, and number of special character. for example !34sy2rmbr! aka "easy 2 remember"
-EDIT: A good password now a days is actually something like words that make no grammatical sense but you can remember because they funny. Or use keepass to generate strong randoms an have easy access to them
Difference between using bean id and name in Spring configuration file
Is there difference in defining Id & name in ApplicationContext xml ? No As of 3.1(spring), id is also defined as an xsd:string type. It means whatever characters allowed in defining name are also allowed in Id. This was not possible prior to Spring 3.1.
Why to use name when it is same as Id ? It is useful for some situations, such as allowing each component in an application to refer to a common dependency by using a bean name that is specific to that component itself.
For example, the configuration metadata for subsystem A may refer to a DataSource via the name subsystemA-dataSource. The configuration metadata for subsystem B may refer to a DataSource via the name subsystemB-dataSource. When composing the main application that uses both these subsystems the main application refers to the DataSource via the name myApp-dataSource. To have all three names refer to the same object you add to the MyApp configuration metadata the following
<bean id="myApp-dataSource" name="subsystemA-dataSource,subsystemB-dataSource" ..../>
Alternatively, You can have separate xml configuration files for each sub-system and then you can make use of
alias to define your own names.
<alias name="subsystemA-dataSource" alias="subsystemB-dataSource"/>
<alias name="subsystemA-dataSource" alias="myApp-dataSource" />
Convert StreamReader to byte[]
You can also use CopyTo:
var ms = new MemoryStream();
yourStreamReader.BaseStream.CopyTo(ms); // blocking call till the end of the stream
ms.GetBuffer().CopyTo(yourArray, ms.Length);
or
var ms = new MemoryStream();
var ct = yourStreamReader.BaseStream.CopyToAsync(ms);
await ct;
ms.GetBuffer().CopyTo(yourArray, ms.Length);
How can I strip first X characters from string using sed?
Well, there have been solutions here with sed, awk, cut and using bash syntax. I just want to throw in another POSIX conform variant:
$ echo "pid: 1234" | tail -c +6
1234
-c tells tail at which byte offset to start, counting from the end of the input data, yet if the the number starts with a + sign, it is from the beginning of the input data to the end.
How to create separate AngularJS controller files?
For brevity, here's an ES2015 sample that doesn't rely on global variables
// controllers/example-controller.js
export const ExampleControllerName = "ExampleController"
export const ExampleController = ($scope) => {
// something...
}
// controllers/another-controller.js
export const AnotherControllerName = "AnotherController"
export const AnotherController = ($scope) => {
// functionality...
}
// app.js
import angular from "angular";
import {
ExampleControllerName,
ExampleController
} = "./controllers/example-controller";
import {
AnotherControllerName,
AnotherController
} = "./controllers/another-controller";
angular.module("myApp", [/* deps */])
.controller(ExampleControllerName, ExampleController)
.controller(AnotherControllerName, AnotherController)
How do I change the title of the "back" button on a Navigation Bar
According to document of UINavigationBar>backItem
If the leftBarButtonItem property of the topmost navigation item is nil, the navigation bar displays a back button whose title is derived from the item in this property.
But setting backItem.backBarButtonItem does not work in first time viewWillAppear. Setting the topItem.backBarButtonItem only works in first time viewWillAppear. Because navigationBar.topItem is still pointing to the previousViewController.navigationItem. In viewWillLayoutSubviews, the topItem and backItem are updated. So after 1st time viewWillAppear, we should set the backItem.backBarButtonItem.
ANSWER : Setting a backBarButtonItem to the navigationItem of the previous viewController no matter when and where in your current viewController (the top viewController). You can use this code in viewWillAppear or viewDidLoad. Check my blog post iOS Set Navigation Bar Back Button Title for detail analysis.
NSArray *viewControllerArray = [self.navigationController viewControllers];
// get index of the previous ViewContoller
long previousIndex = [viewControllerArray indexOfObject:self] - 1;
if (previousIndex >= 0) {
UIViewController *previous = [viewControllerArray objectAtIndex:previousIndex];
previous.navigationItem.backBarButtonItem = [[UIBarButtonItem alloc]
initWithTitle:backButtonTitle
style:UIBarButtonItemStylePlain
target:self
action:nil];
}
Unable to connect to SQL Express "Error: 26-Error Locating Server/Instance Specified)
It's security all about. Make sure you have double check your firewall (windows and anti virus) in some cases when you disabled av firewall and restart your computer, automatically windows firewall is active and it's still block your application. Hope this is helpful ..
how to set image from url for imageView
if you are making a RecyclerView and using an adapter, what worked for me was:
@Override
public void onBindViewHolder(ADAPTERVIEWHOLDER holder, int position) {
MODEL model = LIST.get(position);
holder.TEXTVIEW.setText(service.getTitle());
holder.TEXTVIEW.setText(service.getDesc());
Context context = holder.IMAGEVIEW.getContext();
Picasso.with(context).load(model.getImage()).into(holder.IMAGEVIEW);
}
Convert Text to Date?
Blast from the past but I think I found an easy answer to this. The following worked for me. I think it's the equivalent of selecting the cell hitting F2 and then hitting enter, which makes Excel recognize the text as a date.
Columns("A").Select
Selection.Value = Selection.Value
Using sudo with Python script
Many answers focus on how to make your solution work, while very few suggest that your solution is a very bad approach. If you really want to "practice to learn", why not practice using good solutions? Hardcoding your password is learning the wrong approach!
If what you really want is a password-less mount for that volume, maybe sudo isn't needed at all! So may I suggest other approaches?
Use
/etc/fstabas mensi suggested. Use optionsuserandnoautoto let regular users mount that volume.Use
Polkitfor passwordless actions: Configure a.policyfile for your script with<allow_any>yes</allow_any>and drop at/usr/share/polkit-1/actionsEdit
/etc/sudoersto allow your user to usesudowithout typing your password. As @Anders suggested, you can restrict such usage to specific commands, thus avoiding unlimited passwordless root priviledges in your account. See this answer for more details on/etc/sudoers.
All the above allow passwordless root privilege, none require you to hardcode your password. Choose any approach and I can explain it in more detail.
As for why it is a very bad idea to hardcode passwords, here are a few good links for further reading:
- Why You Shouldn’t Hard Code Your Passwords When Programming
- How to keep secrets secret (Alternatives to Hardcoding Passwords)
- What's more secure? Hard coding credentials or storing them in a database?
- Use of hard-coded credentials, a dangerous programming error: CWE
- Hard-coded passwords remain a key security flaw
Store output of subprocess.Popen call in a string
import subprocess
output = str(subprocess.Popen("ntpq -p",shell = True,stdout = subprocess.PIPE,
stderr = subprocess.STDOUT).communicate()[0])
This is one line solution
Apache default VirtualHost
Obligatory - none of the previous answers worked for me. I inherited a strange combination of IP address-based virtual hosts and * vhosts (not assigned/catch all IP addresses) based virtual hosts in this Apache configuration messed up by ISPConfig.
I wanted Apache to serve not configured hosts with the same page.
I had: not configured hosts went to the first vhost after 000-default.conf. No matter I had *:80 catch all defined as the first vhost, instead of default Apache would load first defined site:
<VirtualHost *:80>
ServerAdmin webmaster@localhost
DocumentRoot /var/www/html
</VirtualHost>
Although it's not completely valid configuration, what finally worked was adding an IP address-based virtualhost without ServerName/ServerAlias defined:
<VirtualHost 192.168.10.10:80>
ServerAdmin webmaster@localhost
DocumentRoot /var/www/html
</VirtualHost>
<VirtualHost 192.168.10.10:443>
ServerAdmin webmaster@localhost
DocumentRoot /var/www/html
SSLEngine On
...
</VirtualHost>
$ apachectl -S outputs IP address-based vhosts first, and * based vhosts later, and finally my default site is loaded before real site:
AH00548: NameVirtualHost has no effect and will be removed in the next release /etc/apache2/sites-enabled/000-default.conf:50
192.168.10.10:80 is a NameVirtualHost
default server server.tld (/etc/apache2/sites-enabled/000-default.conf:34)
port 80 namevhost server.tld (/etc/apache2/sites-enabled/000-default.conf:34)
port 80 namevhost some-site.tld (/etc/apache2/sites-enabled/100-some-site.tld.vhost:7)
...
46.23.86.103:443 is a NameVirtualHost
default server server.tld (/etc/apache2/sites-enabled/000-default.conf:38)
port 443 namevhost server.tld (/etc/apache2/sites-enabled/000-default.conf:38)
port 443 namevhost some-site.tld (/etc/apache2/sites-enabled/100-some-site.tld.vhost:182)
...
*:80 is a NameVirtualHost
default server server.tld (/etc/apache2/sites-enabled/000-default.conf:1)
port 80 namevhost server.tld (/etc/apache2/sites-enabled/000-default.conf:1)
Word of notice - in a configuration like this, * vhosts won't work, so you need to apply IP addresses to all vhosts.
textarea's rows, and cols attribute in CSS
width and height are used when going the css route.
<!DOCTYPE html>
<html>
<head>
<title>Setting Width and Height on Textareas</title>
<style>
.comments { width: 300px; height: 75px }
</style>
</head>
<body>
<textarea class="comments"></textarea>
</body>
</html>
Google Maps API v3 adding an InfoWindow to each marker
Try this:
for (var i in tracks[racer_id].data.points) {
values = tracks[racer_id].data.points[i];
point = new google.maps.LatLng(values.lat, values.lng);
if (values.qst) {
var marker = new google.maps.Marker({map: map, position: point, clickable: true});
tracks[racer_id].markers[i] = marker;
var info = new google.maps.InfoWindow({
content: '<b>Speed:</b> ' + values.inst + ' knots'
});
tracks[racer_id].info[i] = info;
google.maps.event.addListener(tracks[racer_id].markers[i], 'click', function() {
tracks[racer_id].info[i].open(map, tracks[racer_id].markers[i]);
});
}
track_coordinates.push(point);
bd.extend(point);
}
Get the filePath from Filename using Java
Correct solution with "File" class to get the directory - the "path" of the file:
String path = new File("C:\\Temp\\your directory\\yourfile.txt").getParent();
which will return:
path = "C:\\Temp\\your directory"
Squash my last X commits together using Git
This is super-duper kludgy, but in a kind of cool way, so I'll just toss it into the ring:
GIT_EDITOR='f() { if [ "$(basename $1)" = "git-rebase-todo" ]; then sed -i "2,\$s/pick/squash/" $1; else vim $1; fi }; f' git rebase -i foo~5 foo
Translation: provide a new "editor" for git which, if the filename to be edited is git-rebase-todo (the interactive rebase prompt) changes all but the first "pick" to "squash", and otherwise spawns vim - so that when you're prompted to edit the squashed commit message, you get vim. (And obviously I was squashing the last five commits on branch foo, but you could change that however you like.)
I'd probably do what Mark Longair suggested, though.
Split string on whitespace in Python
Another method through re module. It does the reverse operation of matching all the words instead of spitting the whole sentence by space.
>>> import re
>>> s = "many fancy word \nhello \thi"
>>> re.findall(r'\S+', s)
['many', 'fancy', 'word', 'hello', 'hi']
Above regex would match one or more non-space characters.
What's the valid way to include an image with no src?
As written in comments, this method is wrong.
I didn't find this answer before, but acording to W3 Specs valid empty src tag would be an anchor link #.
Example: src="#", src="#empty"
Page validates successfully and no extra request are made.
Convert UTC Epoch to local date
The simplest solution I've found to this, is:
var timestamp = Date.now(), // returns milliseconds since epoch time
normalisedTime = new Date(timestamp);
Notice this doesn't have the * 1000 at the end of new Date(timestamp) statement as this (for me anyway!) always seems to give out the wrong date, ie instead of giving the year 2019 it gives the year as 51015, so just bear that in mind.
Error in styles_base.xml file - android app - No resource found that matches the given name 'android:Widget.Material.ActionButton'
I've just solved these exact errors myself. The key it seems is that your project.properties file in your appcompat library project should use whatever the highest version of the API that your particular appcompat project has been written for (in your case it looks like v21). Easiest way I've found to tell is to look for the highest 'values-v**' folder inside the res folder (eg. values-v21).
To clarify, in addition to the instructions at Support Library Setup, your appcompat/project.properties file should have in it: target=android-21 (mine came with 19 instead).
Also ensure that you have the 'SDK Platform' to match that version installed (eg for v21 install Android 5.0 SDK Platform).
Alternatively if you don't want to use the appcompat at all, (I think) all you need to do is right click your project > Properties > Android > Library > Remove the reference to the appcompat. The errors will still show up for the appcompat project, but shouldn't affect your project after that.
selecting from multi-index pandas
Another option is:
filter1 = df.index.get_level_values('A') == 1
filter2 = df.index.get_level_values('B') == 4
df.iloc[filter1 & filter2]
Out[11]:
0
A B
1 4 1
Groovy executing shell commands
To add one more important information to above provided answers -
For a process
def proc = command.execute();
always try to use
def outputStream = new StringBuffer();
proc.waitForProcessOutput(outputStream, System.err)
//proc.waitForProcessOutput(System.out, System.err)
rather than
def output = proc.in.text;
to capture the outputs after executing commands in groovy as the latter is a blocking call (SO question for reason).
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>'
string is a reference type, a class. You can only use Nullable<T> or the T? C# syntactic sugar with non-nullable value types such as int and Guid.
In particular, as string is a reference type, an expression of type string can already be null:
string lookMaNoText = null;
How do I keep a label centered in WinForms?
If you don't want to dock label in whole available area, just set SizeChanged event instead of TextChanged. Changing each letter will change the width property of label as well as its text when autosize property set to True. So, by the way you can use any formula to keep label centered in form.
private void lblReport_SizeChanged(object sender, EventArgs e)
{
lblReport.Left = (this.ClientSize.Width - lblReport.Size.Width) / 2;
}
How to set Java classpath in Linux?
Can you provide some more details like which linux you are using? Are you loged in as root? On linux you have to run export CLASSPATH = %path%;LOG4J_HOME/og4j-1.2.16.jar If you want it permanent then you can add above lines in ~/.bashrc file.
How to select option in drop down protractorjs e2e tests
If below is the given dropdown-
<select ng-model="operator">_x000D_
<option value="name">Addition</option>_x000D_
<option value="age">Division</option>_x000D_
</select>Then protractorjs code can be-
var operators=element(by.model('operator'));_x000D_
operators.$('[value=Addition]').click();Pandas Merging 101
This post will go through the following topics:
- how to correctly generalize to multiple DataFrames (and why
mergehas shortcomings here) - merging on unique keys
- merging on non-unqiue keys
Generalizing to multiple DataFrames
Oftentimes, the situation arises when multiple DataFrames are to be merged together. Naively, this can be done by chaining merge calls:
df1.merge(df2, ...).merge(df3, ...)
However, this quickly gets out of hand for many DataFrames. Furthermore, it may be necessary to generalise for an unknown number of DataFrames.
Here I introduce pd.concat for multi-way joins on unique keys, and DataFrame.join for multi-way joins on non-unique keys. First, the setup.
# Setup.
np.random.seed(0)
A = pd.DataFrame({'key': ['A', 'B', 'C', 'D'], 'valueA': np.random.randn(4)})
B = pd.DataFrame({'key': ['B', 'D', 'E', 'F'], 'valueB': np.random.randn(4)})
C = pd.DataFrame({'key': ['D', 'E', 'J', 'C'], 'valueC': np.ones(4)})
dfs = [A, B, C]
# Note, the "key" column values are unique, so the index is unique.
A2 = A.set_index('key')
B2 = B.set_index('key')
C2 = C.set_index('key')
dfs2 = [A2, B2, C2]
Multiway merge on unique keys
If your keys (here, the key could either be a column or an index) are unique, then you can use pd.concat. Note that pd.concat joins DataFrames on the index.
# merge on `key` column, you'll need to set the index before concatenating
pd.concat([
df.set_index('key') for df in dfs], axis=1, join='inner'
).reset_index()
key valueA valueB valueC
0 D 2.240893 -0.977278 1.0
# merge on `key` index
pd.concat(dfs2, axis=1, sort=False, join='inner')
valueA valueB valueC
key
D 2.240893 -0.977278 1.0
Omit join='inner' for a FULL OUTER JOIN. Note that you cannot specify LEFT or RIGHT OUTER joins (if you need these, use join, described below).
Multiway merge on keys with duplicates
concat is fast, but has its shortcomings. It cannot handle duplicates.
A3 = pd.DataFrame({'key': ['A', 'B', 'C', 'D', 'D'], 'valueA': np.random.randn(5)})
pd.concat([df.set_index('key') for df in [A3, B, C]], axis=1, join='inner')
ValueError: Shape of passed values is (3, 4), indices imply (3, 2)
In this situation, we can use join since it can handle non-unique keys (note that join joins DataFrames on their index; it calls merge under the hood and does a LEFT OUTER JOIN unless otherwise specified).
# join on `key` column, set as the index first
# For inner join. For left join, omit the "how" argument.
A.set_index('key').join(
[df.set_index('key') for df in (B, C)], how='inner').reset_index()
key valueA valueB valueC
0 D 2.240893 -0.977278 1.0
# join on `key` index
A3.set_index('key').join([B2, C2], how='inner')
valueA valueB valueC
key
D 1.454274 -0.977278 1.0
D 0.761038 -0.977278 1.0
Continue Reading
Jump to other topics in Pandas Merging 101 to continue learning:
* you are here
How to get bitmap from a url in android?
Okay so you are trying to get a bitmap from a file? Title says URL. Anyways, when you are getting files from external storage in Android you should never use a direct path. Instead call getExternalStorageDirectory() like so:
File bitmapFile = new File(Environment.getExternalStorageDirectory() + "/" + PATH_TO_IMAGE);
Bitmap bitmap = BitmapFactory.decodeFile(bitmapFile);
getExternalStorageDirectory() gives you the path to the SD card. Also you need to declare the WRITE_EXTERNAL_STORAGE permission in the Manifest.
SQL Server equivalent of MySQL's NOW()?
getdate() or getutcdate().
How should I read a file line-by-line in Python?
f = open('test.txt','r')
for line in f.xreadlines():
print line
f.close()