If you want to go with the add-open option, here's a command to find which module provides which package ->
java --list-modules | tr @ " " | awk '{ print $1 }' | xargs -n1 java -d
the name of the module will be shown with the @ while the name of the packages without it
NOTE: tested with JDK 11
IMPORTANT: obviously is better than the provider of the package does not do the illegal access
This is a server side issue. You don't need to add any headers in angular for cors. You need to add header on the server side:
Access-Control-Allow-Headers: Content-Type
Access-Control-Allow-Methods: GET, POST, OPTIONS
Access-Control-Allow-Origin: *
First two answers here: How to enable CORS in AngularJs
"most convenient block of data" probably refers to the width (in bits) of the WORD, in correspondance to the system bus width, or whatever underlying "bandwidth" is available. On a 16 bit system, with WORD being defined as 16 bits wide, moving data around in chunks the size of a WORD will be the most efficient way. (On hardware or "system" level.)
With Java being more or less platform independant, it just defines a "WORD" as the next size from a "BYTE", meaning "full bandwidth". I guess any platform that's able to run Java will use 32 bits for a WORD.
You could create many tasks like:
List<Task> TaskList = new List<Task>();
foreach(...)
{
var LastTask = new Task(SomeFunction);
LastTask.Start();
TaskList.Add(LastTask);
}
Task.WaitAll(TaskList.ToArray());
Take a look at this solution. As I know, Flashphoner allows to play Live audio+video stream in the pure HTML5 page.
They use MPEG1 and G.711 codecs for playback. The hack is rendering decoded video to HTML5 canvas element and playing decoded audio via HTML5 audio context.
I am writing this because the accepted answer is pretty old, it needs a refresher.
So this is how I would integrate Ajax with Django in 2019 :) And lets take a real example of when we would need Ajax :-
Lets say I have a model with registered usernames and with the help of Ajax I wanna know if a given username exists.
html:
<p id="response_msg"></p>
<form id="username_exists_form" method='GET'>
Name: <input type="username" name="username" />
<button type='submit'> Check </button>
</form>
ajax:
$('#username_exists_form').on('submit',function(e){
e.preventDefault();
var username = $(this).find('input').val();
$.get('/exists/',
{'username': username},
function(response){ $('#response_msg').text(response.msg); }
);
});
urls.py:
from django.contrib import admin
from django.urls import path
from . import views
urlpatterns = [
path('admin/', admin.site.urls),
path('exists/', views.username_exists, name='exists'),
]
views.py:
def username_exists(request):
data = {'msg':''}
if request.method == 'GET':
username = request.GET.get('username').lower()
exists = Usernames.objects.filter(name=username).exists()
if exists:
data['msg'] = username + ' already exists.'
else:
data['msg'] = username + ' does not exists.'
return JsonResponse(data)
Also render_to_response which is deprecated and has been replaced by render and from Django 1.7 onwards instead of HttpResponse we use JsonResponse for ajax response. Because it comes with a JSON encoder, so you don’t need to serialize the data before returning the response object but HttpResponse
is not deprecated.
For now no jquery or php needed. Use just "required" HTML5 input attrbute like here
<form>
<p>
<input class="form-control" type="text" name="email" />
<input type="submit" value="ok" class="btn btn-success" name="submit" />
<input type="hidden" name="action" value="0" />
</p>
<p><input type="checkbox" required name="terms">I have read and accept <a href="#">SOMETHING Terms and Conditions</a></p>
</form>
This will validate and prevent any submit before checkbox is opt in. Language independent solution because its generated by users web browser.
5. Something else - there must be other solutions out there?
You're right, there is! And it is called JWT (JSON Web Tokens).
JSON Web Token (JWT) is an open standard (RFC 7519) that defines a compact and self-contained way for securely transmitting information between parties as a JSON object. This information can be verified and trusted because it is digitally signed. JWTs can be signed using a secret (with the HMAC algorithm) or a public/private key pair using RSA.
I highly recommend looking into JWTs. They're a much simpler solution to the problem when compared against alternative solutions.
theView.post(new Runnable() {
String str;
@Override
public void run() {
par.Log(str);
}
public Runnable init(String pstr) {
this.str=pstr;
return(this);
}
}.init(str));
Create init function that returns object itself and initialize parameters with it.
Nested classes are just like regular classes, but:
Some examples:
Assume you want to have a class SomeSpecificCollection
which would aggregate objects of class Element
. You can then either:
declare two classes: SomeSpecificCollection
and Element
- bad, because the name "Element" is general enough in order to cause a possible name clash
introduce a namespace someSpecificCollection
and declare classes someSpecificCollection::Collection
and someSpecificCollection::Element
. No risk of name clash, but can it get any more verbose?
declare two global classes SomeSpecificCollection
and SomeSpecificCollectionElement
- which has minor drawbacks, but is probably OK.
declare global class SomeSpecificCollection
and class Element
as its nested class. Then:
SomeSpecificCollection
you refer to just Element
, and everywhere else as SomeSpecificCollection::Element
- which looks +- the same as 3., but more clearSomeSpecificCollection
is also a class.In my opinion, the last variant is definitely the most intuitive and hence best design.
Let me stress - It's not a big difference from making two global classes with more verbose names. It just a tiny little detail, but imho it makes the code more clear.
This is especially useful for introducing typedefs or enums. I'll just post a code example here:
class Product {
public:
enum ProductType {
FANCY, AWESOME, USEFUL
};
enum ProductBoxType {
BOX, BAG, CRATE
};
Product(ProductType t, ProductBoxType b, String name);
// the rest of the class: fields, methods
};
One then will call:
Product p(Product::FANCY, Product::BOX);
But when looking at code completion proposals for Product::
, one will often get all the possible enum values (BOX, FANCY, CRATE) listed and it's easy to make a mistake here (C++0x's strongly typed enums kind of solve that, but never mind).
But if you introduce additional scope for those enums using nested classes, things could look like:
class Product {
public:
struct ProductType {
enum Enum { FANCY, AWESOME, USEFUL };
};
struct ProductBoxType {
enum Enum { BOX, BAG, CRATE };
};
Product(ProductType::Enum t, ProductBoxType::Enum b, String name);
// the rest of the class: fields, methods
};
Then the call looks like:
Product p(Product::ProductType::FANCY, Product::ProductBoxType::BOX);
Then by typing Product::ProductType::
in an IDE, one will get only the enums from the desired scope suggested. This also reduces the risk of making a mistake.
Of course this may not be needed for small classes, but if one has a lot of enums, then it makes things easier for the client programmers.
In the same way, you could "organise" a big bunch of typedefs in a template, if you ever had the need to. It's a useful pattern sometimes.
The PIMPL (short for Pointer to IMPLementation) is an idiom useful to remove the implementation details of a class from the header. This reduces the need of recompiling classes depending on the class' header whenever the "implementation" part of the header changes.
It's usually implemented using a nested class:
X.h:
class X {
public:
X();
virtual ~X();
void publicInterface();
void publicInterface2();
private:
struct Impl;
std::unique_ptr<Impl> impl;
}
X.cpp:
#include "X.h"
#include <windows.h>
struct X::Impl {
HWND hWnd; // this field is a part of the class, but no need to include windows.h in header
// all private fields, methods go here
void privateMethod(HWND wnd);
void privateMethod();
};
X::X() : impl(new Impl()) {
// ...
}
// and the rest of definitions go here
This is particularly useful if the full class definition needs the definition of types from some external library which has a heavy or just ugly header file (take WinAPI). If you use PIMPL, then you can enclose any WinAPI-specific functionality only in .cpp
and never include it in .h
.
It's an old question, but here are some comments...
This is called modular exponentiation(https://en.wikipedia.org/wiki/Modular_exponentiation).
Let's assume you have the following expression:
19 ^ 3 mod 7
Instead of powering 19 directly you can do the following:
(((19 mod 7) * 19) mod 7) * 19) mod 7
But this can take also a long time due to a lot of sequential multipliations and so you can multiply on squared values:
x mod N -> x ^ 2 mod N -> x ^ 4 mod -> ... x ^ 2 |log y| mod N
Modular exponentiation algorithm makes assumptions that:
x ^ y == (x ^ |y/2|) ^ 2 if y is even
x ^ y == x * ((x ^ |y/2|) ^ 2) if y is odd
And so recursive modular exponentiation algorithm will look like this in java:
/**
* Modular exponentiation algorithm
* @param x Assumption: x >= 0
* @param y Assumption: y >= 0
* @param N Assumption: N > 0
* @return x ^ y mod N
*/
public static long modExp(long x, long y, long N) {
if(y == 0)
return 1 % N;
long z = modExp(x, Math.abs(y/2), N);
if(y % 2 == 0)
return (long) ((Math.pow(z, 2)) % N);
return (long) ((x * Math.pow(z, 2)) % N);
}
Special thanks to @chux for found mistake with incorrect return value in case of y and 0 comparison.
I noticed this question a couple of days late, but I feel that I can add some insight. I hope this can be helpful towards your RESTful venture.
Point 1: Am I understanding it right?
You understood right. That is a correct representation of a RESTful architecture. You may find the following matrix from Wikipedia very helpful in defining your nouns and verbs:
When dealing with a Collection URI like: http://example.com/resources/
GET: List the members of the collection, complete with their member URIs for further navigation. For example, list all the cars for sale.
PUT: Meaning defined as "replace the entire collection with another collection".
POST: Create a new entry in the collection where the ID is assigned automatically by the collection. The ID created is usually included as part of the data returned by this operation.
DELETE: Meaning defined as "delete the entire collection".
When dealing with a Member URI like: http://example.com/resources/7HOU57Y
GET: Retrieve a representation of the addressed member of the collection expressed in an appropriate MIME type.
PUT: Update the addressed member of the collection or create it with the specified ID.
POST: Treats the addressed member as a collection in its own right and creates a new subordinate of it.
DELETE: Delete the addressed member of the collection.
Point 2: I need more verbs
In general, when you think you need more verbs, it may actually mean that your resources need to be re-identified. Remember that in REST you are always acting on a resource, or on a collection of resources. What you choose as the resource is quite important for your API definition.
Activate/Deactivate Login: If you are creating a new session, then you may want to consider "the session" as the resource. To create a new session, use POST to http://example.com/sessions/
with the credentials in the body. To expire it use PUT or a DELETE (maybe depending on whether you intend to keep a session history) to http://example.com/sessions/SESSION_ID
.
Change Password: This time the resource is "the user". You would need a PUT to http://example.com/users/USER_ID
with the old and new passwords in the body. You are acting on "the user" resource, and a change password is simply an update request. It's quite similar to the UPDATE statement in a relational database.
My instinct would be to do a GET call to a URL like
/api/users/1/activate_login
This goes against a very core REST principle: The correct usage of HTTP verbs. Any GET request should never leave any side effect.
For example, a GET request should never create a session on the database, return a cookie with a new Session ID, or leave any residue on the server. The GET verb is like the SELECT statement in a database engine. Remember that the response to any request with the GET verb should be cache-able when requested with the same parameters, just like when you request a static web page.
Point 3: How to return error messages and codes
Consider the 4xx or 5xx HTTP status codes as error categories. You can elaborate the error in the body.
Failed to Connect to Database: / Incorrect Database Login: In general you should use a 500 error for these types of errors. This is a server-side error. The client did nothing wrong. 500 errors are normally considered "retryable". i.e. the client can retry the same exact request, and expect it to succeed once the server's troubles are resolved. Specify the details in the body, so that the client will be able to provide some context to us humans.
The other category of errors would be the 4xx family, which in general indicate that the client did something wrong. In particular, this category of errors normally indicate to the client that there is no need to retry the request as it is, because it will continue to fail permanently. i.e. the client needs to change something before retrying this request. For example, "Resource not found" (HTTP 404) or "Malformed Request" (HTTP 400) errors would fall in this category.
Point 4: How to do authentication
As pointed out in point 1, instead of authenticating a user, you may want to think about creating a session. You will be returned a new "Session ID", along with the appropriate HTTP status code (200: Access Granted or 403: Access Denied).
You will then be asking your RESTful server: "Can you GET me the resource for this Session ID?".
There is no authenticated mode - REST is stateless: You create a session, you ask the server to give you resources using this Session ID as a parameter, and on logout you drop or expire the session.
I'd like to suggest a variant of the original question, "What does Ruby have that Python doesn't, and vice versa?" which admits the disappointing answer, "Well, what can you do with either Ruby or Python that can't be done in Intercal?" Nothing on that level, because Python and Ruby are both part of the vast royal family sitting on the throne of being Turing approximant.
But what about this:
What can be done gracefully and well in Python that can't be done in Ruby with such beauty and good engineering, or vice versa?
That may be much more interesting than mere feature comparison.
There are an infinite number of rational numbers, and a finite number of bits with which to represent them. See http://en.wikipedia.org/wiki/Floating_point#Accuracy_problems.
If you have your CSS in an external file, then it's often convenient to display an image that's used frequently across the site (such as a header image) as a background image, because then you have the flexibility to change the image later.
For example, say you have the following HTML:
<div id="headerImage"></div>
...and CSS:
#headerImage {
width: 200px;
height: 100px;
background: url(Images/headerImage.png) no-repeat;
}
A few days later, you change the location of the image. All you have to do is update the CSS:
#headerImage {
width: 200px;
height: 100px;
background: url(../resources/images/headerImage.png) no-repeat;
}
Otherwise, you'd have to update the src
attribute of the appropriate <img>
tag in every HTML file (assuming you're not using a server-side scripting language or CMS to automate the process).
Also background images are useful if you don't want the user to be able to save the image (although I haven't ever needed to do this).
Is it possible that this is an error avoidance technique (advisable or not..)? Since "" is still a string, you would be able to call string functions on it that would result in an exception if it was NULL?
Additional Reason to use Foreign Keys: - Allows greater reuse of a database
Additional Reason to NOT use Foreign Keys: - You are trying to lock-in a customer into your tool by reducing reuse.
One of my favorite uses of reflection is the below Java dump method. It takes any object as a parameter and uses the Java reflection API to print out every field name and value.
import java.lang.reflect.Array;
import java.lang.reflect.Field;
public static String dump(Object o, int callCount) {
callCount++;
StringBuffer tabs = new StringBuffer();
for (int k = 0; k < callCount; k++) {
tabs.append("\t");
}
StringBuffer buffer = new StringBuffer();
Class oClass = o.getClass();
if (oClass.isArray()) {
buffer.append("\n");
buffer.append(tabs.toString());
buffer.append("[");
for (int i = 0; i < Array.getLength(o); i++) {
if (i < 0)
buffer.append(",");
Object value = Array.get(o, i);
if (value.getClass().isPrimitive() ||
value.getClass() == java.lang.Long.class ||
value.getClass() == java.lang.String.class ||
value.getClass() == java.lang.Integer.class ||
value.getClass() == java.lang.Boolean.class
) {
buffer.append(value);
} else {
buffer.append(dump(value, callCount));
}
}
buffer.append(tabs.toString());
buffer.append("]\n");
} else {
buffer.append("\n");
buffer.append(tabs.toString());
buffer.append("{\n");
while (oClass != null) {
Field[] fields = oClass.getDeclaredFields();
for (int i = 0; i < fields.length; i++) {
buffer.append(tabs.toString());
fields[i].setAccessible(true);
buffer.append(fields[i].getName());
buffer.append("=");
try {
Object value = fields[i].get(o);
if (value != null) {
if (value.getClass().isPrimitive() ||
value.getClass() == java.lang.Long.class ||
value.getClass() == java.lang.String.class ||
value.getClass() == java.lang.Integer.class ||
value.getClass() == java.lang.Boolean.class
) {
buffer.append(value);
} else {
buffer.append(dump(value, callCount));
}
}
} catch (IllegalAccessException e) {
buffer.append(e.getMessage());
}
buffer.append("\n");
}
oClass = oClass.getSuperclass();
}
buffer.append(tabs.toString());
buffer.append("}\n");
}
return buffer.toString();
}
For J2EE you have a very comprehensive tutorial at: http://java.sun.com/javaee/5/docs/tutorial/doc/
There are two types of drop down lists available (I am not sure since which version).
ActiveX Drop Down
You can set the column widths, so your hidden column can be set to 0.
Form Drop Down
You could set the drop down range to a hidden sheet and reference the cell adjacent to the selected item. This would also work with the ActiveX type control.
char* str=NULL;
int len = asprintf(&str, "%g", float_var);
if (len == -1)
fprintf(stderr, "Error converting float: %m\n");
else
printf("float is %s\n", str);
free(str);
For CLI C++ (compiled with /clr) see this MSDN link.
In short, a property can be given the name "default":
ref class Class
{
public:
property System::String^ default[int i]
{
System::String^ get(int i) { return "hello world"; }
}
};
Code based on Tolli's answer.
#decorator, modyfies new_cls
def _singleton(new_cls):
instance = new_cls() #2
def new(cls):
if isinstance(instance, cls): #4
return instance
else:
raise TypeError("I can only return instance of {}, caller wanted {}".format(new_cls, cls))
new_cls.__new__ = new #3
new_cls.__init__ = lambda self: None #5
return new_cls
#decorator, creates new class
def singleton(cls):
new_cls = type('singleton({})'.format(cls.__name__), (cls,), {} ) #1
return _singleton(new_cls)
#metaclass
def meta_singleton(name, bases, attrs):
new_cls = type(name, bases, attrs) #1
return _singleton(new_cls)
Explanation:
Create new class, inheriting from given cls
(it doesn't modify cls
in case someone wants for example singleton(list)
)
Create instance. Before overriding __new__
it's so easy.
__new__
using method defined moment ago. The function returns instance
only when it's what the caller expects, otherwise raises TypeError
.
The condition is not met when someone attempts to inherit from decorated class.
If
__new__()
returns an instance ofcls
, then the new instance’s__init__()
method will be invoked like__init__(self[, ...])
, where self is the new instance and the remaining arguments are the same as were passed to__new__()
.
instance
is already initialized, so function replaces __init__
with function doing nothing.
From an answer of @NimChimpsky in similar question:
Resource resource = new ClassPathResource("storedProcedures.sql");
InputStream resourceInputStream = resource.getInputStream();
Using ClassPathResource and interface Resource. And make sure you are adding the resources directory correctly (adding /src/main/resources/
into the classpath).
Note that Resource have a method to get a java.io.File
so you can also use:
Resource resource = new ClassPathResource("storedProcedures.sql");
FileReader fr = new FileReader(resource.getFile());
Hoho.. It should be very easy to use Gallery to implement this, using ViewPager is much harder. But i still encourage to use ViewPager since Gallery really have many problems and is deprecated since android 4.2.
In PagerAdapter there is a method getPageWidth() to control page size, but only by this you cannot achieve your target.
Try to read the following 2 articles for help.
If you could use List
as a data structure to store your data, instead of using Map
to store the result in the value of the Map, you can use following snippet and store the result in the same object.
Here is a Node class:
private class Node {
public int row, col, distance;
public Node(int row, int col, int distance) {
this.row = row;
this.col = col;
this.distance = distance;
}
public boolean equals(Object o) {
return (o instanceof Node &&
row == ((Node) o).row &&
col == ((Node) o).col);
}
}
If you store your result in distance variable and the items in the list are checked based on their coordinates, you can use the following to change the distance to a new one with the help of lastIndexOf method as long as you only need to store one element for each data:
List<Node> nodeList;
nodeList = new ArrayList<>(Arrays.asList(new Node(1, 2, 1), new Node(3, 4, 5)));
Node tempNode = new Node(1, 2, 10);
if(nodeList.contains(tempNode))
nodeList.get(nodeList.lastIndexOf(tempNode)).distance += tempNode.distance;
It is basically reimplementing Set
whose items can be accessed and changed.
This may or may not be helpful but on Windows you can read the console log using Event Tracing for Windows
http://msdn.microsoft.com/en-us/library/ms751538.aspx
Our integration tests are run in .NET so I use this method to add the console log to our test output. I've made a sample console project to demonstrate here: https://github.com/jkells/chrome-trace
--enable-logging --v=1 doesn't seem to work on the latest version of Chrome.
Alan already gave you the right answer - use the sAMAccountName
to filter your user.
I would add a recommendation on your use of DirectorySearcher
- if you only want one or two pieces of information, add them into the "PropertiesToLoad"
collection of the DirectorySearcher
.
Instead of retrieving the whole big user object and then picking out one or two items, this will just return exactly those bits you need.
Sample:
adSearch.PropertiesToLoad.Add("sn"); // surname = last name
adSearch.PropertiesToLoad.Add("givenName"); // given (or first) name
adSearch.PropertiesToLoad.Add("mail"); // e-mail addresse
adSearch.PropertiesToLoad.Add("telephoneNumber"); // phone number
Those are just the usual AD/LDAP property names you need to specify.
I think you want to lowercase the checked value? Try:
var jIsHasKids = $('#chkIsHasKids:checked').val().toLowerCase();
or you want to check it, then get its value as lowercase:
var jIsHasKids = $('#chkIsHasKids').attr("checked", true).val().toLowerCase();
Add spring-tx jar file and it should settle it.
Use empty
(it checks both nullness and emptiness) and group the nested ternary expression by parentheses (EL is in certain implementations/versions namely somewhat problematic with nested ternary expressions). Thus, so:
styleClass="#{empty obj.validationErrorMap ? ' ' :
(obj.validationErrorMap.contains('key') ? 'highlight_field' : 'highlight_row')}"
If still in vain (I would then check JBoss EL configs), use the "normal" EL approach:
styleClass="#{empty obj.validationErrorMap ? ' ' :
(obj.validationErrorMap['key'] ne null ? 'highlight_field' : 'highlight_row')}"
Update: as per the comments, the Map
turns out to actually be a List
(please work on your naming conventions). To check if a List
contains an item the "normal" EL way, use JSTL fn:contains
(although not explicitly documented, it works for List
as well).
styleClass="#{empty obj.validationErrorMap ? ' ' :
(fn:contains(obj.validationErrorMap, 'key') ? 'highlight_field' : 'highlight_row')}"
Do you have ROWS of data (horizontal) as you stated or COLUMNS (vertical)?
If it's the latter you can use "Text to columns" functionality to convert a whole column "in situ" - to do that:
Select column > Data > Text to columns > Next > Next > Choose "Date" under "column data format" and "YMD" from dropdown > Finish
....otherwise you can convert with a formula by using
=TEXT(A1,"0000-00-00")+0
and format in required date format
Just wanted to update this thread for future developers.
JQuery >1.12 Now supports being able to change every little piece of the request through JQuery.post ($.post({...}). see second function signature in https://api.jquery.com/jquery.post/
I needed some formatting logic to be shared across multiple components and as an Angular developer also naturally leaned towards a service.
I shared the logic by putting it in a separate file
function format(input) {
//convert input to output
return output;
}
module.exports = {
format: format
};
and then imported it as a module
import formatter from '../services/formatter.service';
//then in component
render() {
return formatter.format(this.props.data);
}
I use this class for Audio play. If your audio location is raw folder.
Call method for play:
new AudioPlayer().play(mContext, getResources().getIdentifier(alphabetItemList.get(mPosition)
.getDetail().get(0).getAudio(),"raw", getPackageName()));
AudioPlayer.java class:
public class AudioPlayer {
private MediaPlayer mMediaPlayer;
public void stop() {
if (mMediaPlayer != null) {
mMediaPlayer.release();
mMediaPlayer = null;
}
}
// mothod for raw folder (R.raw.fileName)
public void play(Context context, int rid){
stop();
mMediaPlayer = MediaPlayer.create(context, rid);
mMediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
@Override
public void onCompletion(MediaPlayer mediaPlayer) {
stop();
}
});
mMediaPlayer.start();
}
// mothod for other folder
public void play(Context context, String name) {
stop();
//mMediaPlayer = MediaPlayer.create(c, rid);
mMediaPlayer = MediaPlayer.create(context, Uri.parse("android.resource://"+ context.getPackageName()+"/your_file/"+name+".mp3"));
mMediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
@Override
public void onCompletion(MediaPlayer mediaPlayer) {
stop();
}
});
mMediaPlayer.start();
}
}
If you are looking for Hash modification, your solution works ok. However, if you want to change the query, you can use the pushState, as you said. Here it is an example that might help you to implement it properly. I tested and it worked fine:
if (history.pushState) {
var newurl = window.location.protocol + "//" + window.location.host + window.location.pathname + '?myNewUrlQuery=1';
window.history.pushState({path:newurl},'',newurl);
}
It does not reload the page, but it only allows you to change the URL query. You would not be able to change the protocol or the host values. And of course that it requires modern browsers that can process HTML5 History API.
For more information:
http://diveintohtml5.info/history.html
https://developer.mozilla.org/en-US/docs/Web/Guide/API/DOM/Manipulating_the_browser_history
The problem is because your file are not with the same encoding. First run the following command in all your files:
file -i filename.*
In order to fix the problem you have to change all your files to uft-8. You can do it with the command iconv:
iconv -f fromcode -t tocode filename > newfilename
Example:
iconv -f iso-8859-1 -t utf-8 index.html > fixed/index.html
After this you can run file -i fixedx/index.html and you will see that your file is now in uft-8
For styles wp_register_style( 'namespace', 'http://locationofcss.com/mycss.css' );
Then use: wp_enqueue_style('namespace');
wherever you want the css to load.
Scripts are as above but the quicker way for loading jquery is just to use enqueue loaded in an init for the page you want it to load on: wp_enqueue_script('jquery');
Unless of course you want to use the google repository for jquery.
You can also conditionally load the jquery library that your script is dependent on:
wp_enqueue_script('namespaceformyscript', 'http://locationofscript.com/myscript.js', array('jquery'));
Update Sept. 2017
I wrote this answer a while ago. I should clarify that the best place to enqueue your scripts and styles is within the wp_enqueue_scripts
hook. So for example:
add_action('wp_enqueue_scripts', 'callback_for_setting_up_scripts');
function callback_for_setting_up_scripts() {
wp_register_style( 'namespace', 'http://locationofcss.com/mycss.css' );
wp_enqueue_style( 'namespace' );
wp_enqueue_script( 'namespaceformyscript', 'http://locationofscript.com/myscript.js', array( 'jquery' ) );
}
The wp_enqueue_scripts
action will set things up for the "frontend". You can use the admin_enqueue_scripts
action for the backend (anywhere within wp-admin) and the login_enqueue_scripts
action for the login page.
You can check the application-specific data in your emulator as follows,
adb shell
in cmd/data/data/
and navigate into your applicationThere you can find the cache data and databases specific to your application
AJAX is a way of sending information between browser and server without refreshing page. It can be done with or without library like jQuery.
It is easier with the library.
Here is a list of JavaScript libraries/frameworks commonly used in AJAX development.
var soundEffect = AVAudioPlayer()
func playSound(_ buttonTag : Int){
let path = Bundle.main.path(forResource: "note\(buttonTag)", ofType : "wav")!
let url = URL(fileURLWithPath : path)
do{
soundEffect = try AVAudioPlayer(contentsOf: url)
soundEffect?.play()
// to stop the spound .stop()
}catch{
print ("file could not be loaded or other error!")
}
}
works in swift 4 latest version. ButtonTag would be a tag on a button on your interface. Notes are in a folder in a folder parallel to Main.storyboard. Every note is named as note1, note2, etc. ButtonTag is giving the number 1, 2, etc from the button clicked which is passed as param
You can basically switch the class using [ngClass]
for example
<button [ngClass]="{'active': selectedItem === 'item1'}" (click)="selectedItem = 'item1'">Button One</button>
<button [ngClass]="{'active': selectedItem === 'item2'}" (click)="selectedItem = 'item2'">Button Two</button>
Note that the if $myVar; then ... ;fi
construct has a security problem you might want to avoid with
case $myvar in
(true) echo "is true";;
(false) echo "is false";;
(rm -rf*) echo "I just dodged a bullet";;
esac
You might also want to rethink why if [ "$myvar" = "true" ]
appears awkward to you. It's a shell string comparison that beats possibly forking a process just to obtain an exit status. A fork is a heavy and expensive operation, while a string comparison is dead cheap. Think a few CPU cycles versus several thousand. My case
solution is also handled without forks.
I did this inside the render() method:
render() {
const project = () => {
switch(this.projectName) {
case "one": return <ComponentA />;
case "two": return <ComponentB />;
case "three": return <ComponentC />;
case "four": return <ComponentD />;
default: return <h1>No project match</h1>
}
}
return (
<div>{ project() }</div>
)
}
I tried to keep the render() return clean, so I put my logic in a 'const' function right above. This way I can also indent my switch cases neatly.
In case anyone is interested (even if the question does not ask for this version), in C# 2 would be: (I have edited the answer, following some suggestions)
myList.Sort(CLASS_FOR_COMPARER);
List<string> fiveElements = myList.GetRange(0, 5);
new String(byteArray, Charset.defaultCharset())
This will convert a byte array to the default charset in java. It may throw exceptions depending on what you supply with the byteArray.
Use this to get the time in milliseconds (long)(NSTimeInterval)([[NSDate date] timeIntervalSince1970])
.
I'm not sure it can be done purely with CSS, unless you're comfortable in sort of faking it with illusions. Maybe use Josh Mein's answer, and set #container
to overflow:hidden
.
For what it's worth, here's a jQuery solution:
var contH = $('#container').height(),
upH = $('#up').height();
$('#down').css('height' , contH - upH);
It is rather messy but you need to do something like the following:
START "do something window" dir
FOR /F "tokens=2" %I in ('TASKLIST /NH /FI "WINDOWTITLE eq do something window"' ) DO SET PID=%I
ECHO %PID%
TASKKILL /PID %PID%
Found this on this page.
(This kind of thing is much easier if you have a UNIX / LINUX system ... or if you run Cygwin or similar on Windows.)
I came to this page looking for a way of getting my own ip address not the one of the remote machine connecting to me.
This will not work for a windows machine.
But in case someone searches for what I was looking for:
#! /usr/bin/php
<?php
$my_current_ip=exec("ifconfig | grep -Eo 'inet (addr:)?([0-9]*\.){3}[0-9]*' | grep -Eo '([0-9]*\.){3}[0-9]*' | grep -v '127.0.0.1'");
echo $my_current_ip;
(Shamelessly adapted from How to I get the primary IP address of the local machine on Linux and OS X?)
you could just use replace function before you return the string in the method
return df.format(bd).replace(",", ".")
You can also use FormData (But not available in IE):
var formData = new FormData(document.getElementsByName('yourForm')[0]);// yourForm: form selector
$.ajax({
type: "POST",
url: "yourURL",// where you wanna post
data: formData,
processData: false,
contentType: false,
error: function(jqXHR, textStatus, errorMessage) {
console.log(errorMessage); // Optional
},
success: function(data) {console.log(data)}
});
This is how you use FormData.
I used the plain .css. It worked great. Note that I deleted the following from the bootstrap.min.css:
/* Fade transition for carousel items */
.carousel .item {
left: 0 !important;
-webkit-transition: opacity .4s;
/*adjust timing here */
-moz-transition: opacity .4s;
-o-transition: opacity .4s;
transition: opacity .4s;
}
.carousel-control {
background-image: none !important;
/* remove background gradients on controls */
}
/* Fade controls with items */
.next.left, .prev.right {
opacity: 1;
z-index: 1;
}
.active.left, .active.right {
opacity: 0;
z-index: 2;
}
Issue Description:
One Alternative:
Simulate a class variable behavior using Objective-C features
Declare/Define an static variable within the classA.m so it will be only accessible for the classA methods (and everything you put inside classA.m).
Overwrite the NSObject initialize class method to initialize just once the static variable with an instance of ClassB.
You will be wondering, why should I overwrite the NSObject initialize method. Apple documentation about this method has the answer: "The runtime sends initialize to each class in a program exactly one time just before the class, or any class that inherits from it, is sent its first message from within the program. (Thus the method may never be invoked if the class is not used.)".
Feel free to use the static variable within any ClassA class/instance method.
Code sample:
file: classA.m
static ClassB *classVariableName = nil;
@implementation ClassA
...
+(void) initialize
{
if (! classVariableName)
classVariableName = [[ClassB alloc] init];
}
+(void) classMethodName
{
[classVariableName doSomething];
}
-(void) instanceMethodName
{
[classVariableName doSomething];
}
...
@end
References:
In eclipse help documentation, we can all icons information as follows. Common path for all eclipse versions except eclipse version:
For reference: I had this error when trying to do an unattended VS 2013 install in a windowsservercore
docker container:
.\vs_professional.exe /Q
reason turned out to be having the installation files on a docker volume, copying to the disk of the container solved it.
There's been a fair amount of recent research in considering how REST HTTP calls could replace the message queue concept.
If you introduce the concept of a process and a task as a resource, the need for middle messaging layer starts to evaporate.
Ex:
POST /task/name
- Returns a 202 accepted status immediately
- Returns a resource url for the created task: /task/name/X
- Returns a resource url for the started process: /process/Y
GET /process/Y
- Returns status of ongoing process
A task can have multiple steps for initialization, and a process can return status when polled or POST to a callback URL when complete.
This is dead simple, and becomes quite powerful when you realize that you can now subscribe to an rss/atom feed of all running processes and tasks without any middle layer. Any queuing system is going to require some sort of web front end anyway, and this concept has it built in without another layer of custom code.
Your resources exist until you delete them, which means you can view historical information long after the process and task complete.
You have built in service discovery, even for a task that has multiple steps, without any extra complicated protocols.
GET /task/name
- returns form with required fields
POST (URL provided form's "action" attribute)
Your service discovery is an HTML form - a universal and human readable format.
The entire flow can be used programmatically or by a human, using universally accepted tools. It's a client driven, and therefore RESTful. Every tool created for the web can drive your business processes. You still have alternate message channels by POSTing asynchronously to a separate array of log servers.
After you consider it for a while, you sit back and start to realize that REST may just eliminate the need for a messaging queue and an ESB altogether.
My issue was I had this code in my css
html,
body {
height: 100%;
width: 100%;
overflow: auto;
}
Once I removed it, the scroll event on window fired again
Having following html:
<!-- note that not all browsers focus on links when Tab is pressed -->
<a href="http://example.com">Link</a>
<input type="text" placeholder="Some input" />
<a href="http://example.com">Another Link</a>
<textarea>...</textarea>
You can get to active link with:
// event listener for keyup
function checkTabPress(e) {
"use strict";
// pick passed event or global event object if passed one is empty
e = e || event;
var activeElement;
if (e.keyCode == 9) {
// Here read the active selected link.
activeElement = document.activeElement;
// If HTML element is an anchor <a>
if (activeElement.tagName.toLowerCase() == 'a')
// get it's hyperlink
alert(activeElement.href);
}
}
var body = document.querySelector('body');
body.addEventListener('keyup', checkTabPress);
Here is working example.
var cumulativeOffset = function(element) {
var top = 0, left = 0;
do {
top += element.offsetTop || 0;
left += element.offsetLeft || 0;
element = element.offsetParent;
} while(element);
return {
top: top,
left: left
};
};
(Method shamelessly stolen from PrototypeJS; code style, variable names and return value changed to protect the innocent)
You can either use the prepareStatement
method taking an additional int
parameter
PreparedStatement ps = con.prepareStatement(sql, Statement.RETURN_GENERATED_KEYS)
For some JDBC drivers (for example, Oracle) you have to explicitly list the column names or indices of the generated keys:
PreparedStatement ps = con.prepareStatement(sql, new String[]{"USER_ID"})
It's HTML character references for encoding a character by its decimal code point
Look at the ASCII table here and you'll see that 39 (hex 0x27, octal 47) is the code for apostrophe
It's because you can't resolve the host name Maybe DNS problems, host is unreachable...
try to use IP address instead of host name... ping this host name... nslookup it...
ByteArrayInputStream also does the trick:
InputStream is = new ByteArrayInputStream( myString.getBytes( charset ) );
Then convert to reader:
InputStreamReader reader = new InputStreamReader(is);
If the API says to use HTTP Basic authentication, then you need to add an Authorization header to your request. I'd alter your code to look like this:
WebRequest req = WebRequest.Create(@"https://sub.domain.com/api/operations?param=value¶m2=value");
req.Method = "GET";
req.Headers["Authorization"] = "Basic " + Convert.ToBase64String(Encoding.Default.GetBytes("username:password"));
//req.Credentials = new NetworkCredential("username", "password");
HttpWebResponse resp = req.GetResponse() as HttpWebResponse;
Replacing "username"
and "password"
with the correct values, of course.
You need the put the characters you wish to split on in a character class, which tells the regular expression engine "any of these characters is a match". For your purposes, this would look like:
date.split(/[.,\/ -]/)
Although dashes have special meaning in character classes as a range specifier (ie [a-z]
means the same as [abcdefghijklmnopqrstuvwxyz]
), if you put it as the last thing in the class it is taken to mean a literal dash and does not need to be escaped.
To explain why your pattern didn't work, /-./
tells the regular expression engine to match a literal dash character followed by any character (dots are wildcard characters in regular expressions). With "02-25-2010", it would split each time "-2" is encountered, because the dash matches and the dot matches "2".
Docker treats lines that begin with
#
as a comment, unless the line is a valid parser directive. A#
marker anywhere else in a line is treated as an argument.example code:
# this line is a comment RUN echo 'we are running some # of cool things'
Output:
we are running some # of cool things
Sorry about the confusion, this should be the correct approach. Do you want only to capture 'bad'
only, not things like 'good'
; Or just any non-numerical values?
In[15]:
np.where(np.any(np.isnan(df.convert_objects(convert_numeric=True)), axis=1))
Out[15]:
(array([3]),)
After install react-router-dom
<Link
to={{
pathname: "/product-detail",
productdetailProps: {
productdetail: "I M passed From Props"
}
}}>
Click To Pass Props
</Link>
and other end where the route is redirected do this
componentDidMount() {
console.log("product props is", this.props.location.productdetailProps);
}
First few lines: man head
.
Append lines: use the >>
operator (?) in Bash:
echo 'This goes at the end of the file' >> file
The tabularx
package gives you
X
, all X
columns will grow to fill up the total width.For your example:
\usepackage{tabularx}
% ...
\begin{document}
% ...
\begin{tabularx}{\textwidth}{|X|X|X|}
\hline
Input & Output& Action return \\
\hline
\hline
DNF & simulation & jsp\\
\hline
\end{tabularx}
You can use the following snippet:
tr td:first-child {text-decoration: underline;}
tr td:last-child {color: red;}
Using the following pseudo classes:
:first-child means "select this element if it is the first child of its parent".
:last-child means "select this element if it is the last child of its parent".
Only element nodes (HTML tags) are affected, these pseudo-classes ignore text nodes.
ERROR 1064 (42000) at line 1:
This error is very common. The main reason of the occurrence of this error is: When user accidentally edited or false edit the .sql file.
If you want to use calc in your CSS file use a polyfill like PolyCalc. Should be light enough to work on mobile browsers (e.g. below iOS 6 and below Android 4.4 phones).
I tried the first solution and it works but the end user can easily identify that the div's are refreshing as it is fadeIn(), without fade in i tried .toggle().toggle() and it works perfect. you can try like this
$("#panel").toggle().toggle();
_x000D_
it works perfectly for me as i'm developing a messenger and need to minimize and maximize the chat box's and this does it best rather than the above code.
As of August 2020, Google Play's In-App Review API is available and its straightforward implementation is correct as per this answer.
But if you wish add some display logic on top of it, use the Five-Star-Me library.
Set launch times and install days in the onCreate
method of the MainActivity to configure the library.
FiveStarMe.with(this)
.setInstallDays(0) // default 10, 0 means install day.
.setLaunchTimes(3) // default 10
.setDebug(false) // default false
.monitor();
Then place the below method call on any activity / fragment's onCreate / onViewCreated method to show the prompt whenever the conditions are met.
FiveStarMe.showRateDialogIfMeetsConditions(this); //Where *this* is the current activity.
Installation instructions:
You can download from jitpack.
Step 1: Add this to project (root) build.gradle.
allprojects {
repositories {
...
maven { url 'https://jitpack.io' }
}
}
Step 2: Add the following dependency to your module (app) level build.gradle.
dependencies {
implementation 'com.github.numerative:Five-Star-Me:2.0.0'
}
With:
Calendar cal = Calendar.getInstance();
Then cal
have the current date and time.
You also could get the current Date and Time for timezone with:
Calendar cal2 = Calendar.getInstance(TimeZone.getTimeZone("GMT-2"));
You could ask cal.get(Calendar.DATE);
or other Calendar constant about others details.
Date and Timestamp are deprecated in Java. Calendar class it isn't.
Even better, use DEFAULT instead of NULL. You want to store the default value, not a NULL that might trigger a default value.
But you'd better name all columns, with a piece of SQL you can create all the INSERT, UPDATE and DELETE's you need. Just check the information_schema and construct the queries you need. There is no need to do it all by hand, SQL can help you out.
no need for the padding or the corners.
here's a sample:
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="oval" >
<gradient android:startColor="#FFFF0000" android:endColor="#80FF00FF"
android:angle="270"/>
</shape>
based on :
No unfortunately there is not. At the raw level files do not work on a line number basis. Instead they work at a position / offset basis. The root filesystem has no concept of lines. It's a concept added by higher level components.
So there is no way to tell the operating system, please open file at line blah. Instead you have to open the file and skip around counting new lines until you've passed the specified number. Then store the next set of bytes into an array until you hit the next new line.
UPDATE 2020: SQL Server 2016+ JSON Serialization and De-serialization Examples
The data provided by the OP inserted into a temporary table called #project_members
drop table if exists #project_members;
create table #project_members(
empName varchar(20) not null,
projID varchar(20) not null);
go
insert #project_members(empName, projID) values
('ANDY', 'A100'),
('ANDY', 'B391'),
('ANDY', 'X010'),
('TOM', 'A100'),
('TOM', 'A510');
How to serialize this data into a single JSON string with a nested array containing projID's
select empName, (select pm_json.projID
from #project_members pm_json
where pm.empName=pm_json.empName
for json path, root('projList')) projJSON
from #project_members pm
group by empName
for json path;
Result
'[
{
"empName": "ANDY",
"projJSON": {
"projList": [
{ "projID": "A100" },
{ "projID": "B391" },
{ "projID": "X010" }
]
}
},
{
"empName": "TOM",
"projJSON": {
"projList": [
{ "projID": "A100" },
{ "projID": "A510" }
]
}
}
]'
How to de-serialize this data from a single JSON string back to it's original rows and columns
declare @json nvarchar(max)=N'[{"empName":"ANDY","projJSON":{"projList":[{"projID":"A100"},
{"projID":"B391"},{"projID":"X010"}]}},{"empName":"TOM","projJSON":
{"projList":[{"projID":"A100"},{"projID":"A510"}]}}]';
select oj.empName, noj.projID
from openjson(@json) with (empName varchar(20),
projJSON nvarchar(max) as json) oj
cross apply openjson(oj.projJSON, '$.projList') with (projID varchar(20)) noj;
Results
empName projID
ANDY A100
ANDY B391
ANDY X010
TOM A100
TOM A510
How to persist the unique empName to a table and store the projID's in a nested JSON array
drop table if exists #project_members_with_json;
create table #project_members_with_json(
empName varchar(20) unique not null,
projJSON nvarchar(max) not null);
go
insert #project_members_with_json(empName, projJSON)
select empName, (select pm_json.projID
from #project_members pm_json
where pm.empName=pm_json.empName
for json path, root('projList'))
from #project_members pm
group by empName;
Results
empName projJSON
ANDY {"projList":[{"projID":"A100"},{"projID":"B391"},{"projID":"X010"}]}
TOM {"projList":[{"projID":"A100"},{"projID":"A510"}]}
How to de-serialize from a table with unique empName and nested JSON array column containing projID's
select wj.empName, oj.projID
from
#project_members_with_json wj
cross apply
openjson(wj.projJSON, '$.projList') with (projID varchar(20)) oj;
Results
empName projID
ANDY A100
ANDY B391
ANDY X010
TOM A100
TOM A510
The use-case for CORS is simple. Imagine the site alice.com has some data that the site bob.com wants to access. This type of request traditionally wouldn’t be allowed under the browser’s same origin policy. However, by supporting CORS requests, alice.com can add a few special response headers that allows bob.com to access the data. In order to understand it well, please visit this nice tutorial.. How to solve the issue of CORS
This method works for everything (integers and even doubles) except zero (it calls it invalid):
The while loop is just for the repetitive user input. Basically it checks if the integer x/x = 1. If it does (as it would with a number), its an integer/double. If it doesn't, it obviously it isn't. Zero fails the test though.
#include <stdio.h>
#include <math.h>
void main () {
double x;
int notDouble;
int true = 1;
while(true) {
printf("Input an integer: \n");
scanf("%lf", &x);
if (x/x != 1) {
notDouble = 1;
fflush(stdin);
}
if (notDouble != 1) {
printf("Input is valid\n");
}
else {
printf("Input is invalid\n");
}
notDouble = 0;
}
}
Think has a easy way, like this:
InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
imm.isActive();
You can also see if him is active in a specific view:
imm.isActive(View v);
Use the Controller's Redirect() method.
public ActionResult YourAction()
{
// ...
return Redirect("http://www.example.com");
}
Update
You can't directly perform a server side redirect from an ajax response. You could, however, return a JsonResult with the new url and perform the redirect with javascript.
public ActionResult YourAction()
{
// ...
return Json(new {url = "http://www.example.com"});
}
$.post("@Url.Action("YourAction")", function(data) {
window.location = data.url;
});
Best practice of getting length is use length
filter returns the number of items of a sequence or mapping, or the length of a string. For example: {{ notcount | length }}
But you can calculate count of elements in for
loop. For example:
{% set count = 0 %}
{% for nc in notcount %}
{% set count = count + 1 %}
{% endfor %}
{{ count }}
This solution helps if you want to calculate count of elements by condition, for example you have a property name
inside object and you want to calculate count of objects with not empty names:
{% set countNotEmpty = 0 %}
{% for nc in notcount if nc.name %}
{% set countNotEmpty = countNotEmpty + 1 %}
{% endfor %}
{{ countNotEmpty }}
Useful links:
The syntax is as follows:
new Date(year, month [, day, hour, minute, second, millisecond ])
so
Date d = new Date(2011,10,30);
is correct; day, hour, minute, second, millisecond are optional.
https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Date
If you have to flat a more complicated list with not iterable elements or with depth more than 2 you can use following function:
def flat_list(list_to_flat):
if not isinstance(list_to_flat, list):
yield list_to_flat
else:
for item in list_to_flat:
yield from flat_list(item)
It will return a generator object which you can convert to a list with list()
function. Notice that yield from
syntax is available starting from python3.3, but you can use explicit iteration instead.
Example:
>>> a = [1, [2, 3], [1, [2, 3, [1, [2, 3]]]]]
>>> print(list(flat_list(a)))
[1, 2, 3, 1, 2, 3, 1, 2, 3]
You can use,
$directoryURI =basename($_SERVER['SCRIPT_NAME']);
echo $directoryURI;
The proper way to do it is by using tput
or terminfo
functions to obtain terminal properties and then insert newlines according to the dimensions..
You can't add them directly, you have to make a new array and then copy each of the arrays into the new one. System.arraycopy is a method you can use to perform this copy.
int[] array1and2 = new int[array1.length + array2.length];
System.arraycopy(array1, 0, array1and2, 0, array1.length);
System.arraycopy(array2, 0, array1and2, array1.length, array2.length);
This will work regardless of the size of array1 and array2.
Doing the same in declarative pipeline syntax, below are few examples:
stage('master-branch-stuff') {
when {
branch 'master'
}
steps {
echo 'run this stage - ony if the branch = master branch'
}
}
stage('feature-branch-stuff') {
when {
branch 'feature/*'
}
steps {
echo 'run this stage - only if the branch name started with feature/'
}
}
stage('expression-branch') {
when {
expression {
return env.BRANCH_NAME != 'master';
}
}
steps {
echo 'run this stage - when branch is not equal to master'
}
}
stage('env-specific-stuff') {
when {
environment name: 'NAME', value: 'this'
}
steps {
echo 'run this stage - only if the env name and value matches'
}
}
More effective ways coming up -
https://issues.jenkins-ci.org/browse/JENKINS-41187
Also look at -
https://jenkins.io/doc/book/pipeline/syntax/#when
The directive beforeAgent true
can be set to avoid spinning up an agent to run the conditional, if the conditional doesn't require git state to decide whether to run:
when { beforeAgent true; expression { return isStageConfigured(config) } }
Release post and docs
UPDATE
New WHEN Clause
REF: https://jenkins.io/blog/2018/04/09/whats-in-declarative
equals - Compares two values - strings, variables, numbers, booleans - and returns true if they’re equal. I’m honestly not sure how we missed adding this earlier! You can do "not equals" comparisons using the not { equals ... } combination too.
changeRequest - In its simplest form, this will return true if this Pipeline is building a change request, such as a GitHub pull request. You can also do more detailed checks against the change request, allowing you to ask "is this a change request against the master branch?" and much more.
buildingTag - A simple condition that just checks if the Pipeline is running against a tag in SCM, rather than a branch or a specific commit reference.
tag - A more detailed equivalent of buildingTag, allowing you to check against the tag name itself.
Maybe you are out of inodes. Try df -i
2591792 136322 2455470 6% /home
/dev/sdb1 1887488 1887488 0 100% /data
Disk used 6% but inode table full.
No need to start, it would automatically executed while you startup your mac terminal / bash. Whenever you do a change, you may need to restart the terminal.
~ is the default path for .bash_profile
The IF/THEN/ELSE construct you are using is only valid in stored procedures and functions. Your query will need to be restructured because you can't use the IF() function to control the flow of the WHERE clause like this.
The IF() function that can be used in queries is primarily meant to be used in the SELECT portion of the query for selecting different data based on certain conditions, not so much to be used in the WHERE portion of the query:
SELECT IF(JQ.COURSE_ID=0, 'Some Result If True', 'Some Result If False'), OTHER_COLUMNS
FROM ...
WHERE ...
@Michiel is correct to create a button but the code for ActionScript 3 it is a little different - where movieClipName is the name of your 'button'.
movieClipName.addEventListener(MouseEvent.CLICK, callLink);
function callLink:void {
var url:String = "http://site";
var request:URLRequest = new URLRequest(url);
try {
navigateToURL(request, '_blank');
} catch (e:Error) {
trace("Error occurred!");
}
}
source: http://scriptplayground.com/tutorials/as/getURL-in-Actionscript-3/
I use this:
function strip_word_html($text, $allowed_tags = '<a><ul><li><b><i><sup><sub><em><strong><u><br><br/><br /><p><h2><h3><h4><h5><h6>')
{
mb_regex_encoding('UTF-8');
//replace MS special characters first
$search = array('/‘/u', '/’/u', '/“/u', '/”/u', '/—/u');
$replace = array('\'', '\'', '"', '"', '-');
$text = preg_replace($search, $replace, $text);
//make sure _all_ html entities are converted to the plain ascii equivalents - it appears
//in some MS headers, some html entities are encoded and some aren't
//$text = html_entity_decode($text, ENT_QUOTES, 'UTF-8');
//try to strip out any C style comments first, since these, embedded in html comments, seem to
//prevent strip_tags from removing html comments (MS Word introduced combination)
if(mb_stripos($text, '/*') !== FALSE){
$text = mb_eregi_replace('#/\*.*?\*/#s', '', $text, 'm');
}
//introduce a space into any arithmetic expressions that could be caught by strip_tags so that they won't be
//'<1' becomes '< 1'(note: somewhat application specific)
$text = preg_replace(array('/<([0-9]+)/'), array('< $1'), $text);
$text = strip_tags($text, $allowed_tags);
//eliminate extraneous whitespace from start and end of line, or anywhere there are two or more spaces, convert it to one
$text = preg_replace(array('/^\s\s+/', '/\s\s+$/', '/\s\s+/u'), array('', '', ' '), $text);
//strip out inline css and simplify style tags
$search = array('#<(strong|b)[^>]*>(.*?)</(strong|b)>#isu', '#<(em|i)[^>]*>(.*?)</(em|i)>#isu', '#<u[^>]*>(.*?)</u>#isu');
$replace = array('<b>$2</b>', '<i>$2</i>', '<u>$1</u>');
$text = preg_replace($search, $replace, $text);
//on some of the ?newer MS Word exports, where you get conditionals of the form 'if gte mso 9', etc., it appears
//that whatever is in one of the html comments prevents strip_tags from eradicating the html comment that contains
//some MS Style Definitions - this last bit gets rid of any leftover comments */
$num_matches = preg_match_all("/\<!--/u", $text, $matches);
if($num_matches){
$text = preg_replace('/\<!--(.)*--\>/isu', '', $text);
}
$text = preg_replace('/(<[^>]+) style=".*?"/i', '$1', $text);
return $text;
}
Seems like you are going to have limited options since you want the check to occur before the upload. I think the best you are going to get is to use javascript to validate the extension of the file. You could build a hash of valid extensions and then look to see if the extension of the file being uploaded existed in the hash.
HTML:
<input type="file" name="FILENAME" size="20" onchange="check_extension(this.value,"upload");"/>
<input type="submit" id="upload" name="upload" value="Attach" disabled="disabled" />
Javascript:
var hash = {
'xls' : 1,
'xlsx' : 1,
};
function check_extension(filename,submitId) {
var re = /\..+$/;
var ext = filename.match(re);
var submitEl = document.getElementById(submitId);
if (hash[ext]) {
submitEl.disabled = false;
return true;
} else {
alert("Invalid filename, please select another file");
submitEl.disabled = true;
return false;
}
}
A simple off the shelf pretty printer in Go. One can compile it to a binary through:
go build -o jsonformat jsonformat.go
It reads from standard input, writes to standard output and allow to set indentation:
package main
import (
"bytes"
"encoding/json"
"flag"
"fmt"
"io/ioutil"
"os"
)
func main() {
indent := flag.String("indent", " ", "indentation string/character for formatter")
flag.Parse()
src, err := ioutil.ReadAll(os.Stdin)
if err != nil {
fmt.Fprintf(os.Stderr, "problem reading: %s", err)
os.Exit(1)
}
dst := &bytes.Buffer{}
if err := json.Indent(dst, src, "", *indent); err != nil {
fmt.Fprintf(os.Stderr, "problem formatting: %s", err)
os.Exit(1)
}
if _, err = dst.WriteTo(os.Stdout); err != nil {
fmt.Fprintf(os.Stderr, "problem writing: %s", err)
os.Exit(1)
}
}
It allows to run a bash commands like:
cat myfile | jsonformat | grep "key"
You could make two forms with 2 different actions
<form action="login.php" method="post">
<input type="text" name="user">
<input type="password" name="password">
<input type="submit" value="Login">
</form>
<br />
<form action="register.php" method="post">
<input type="text" name="user">
<input type="password" name="password">
<input type="submit" value="Register">
</form>
Or do this
<form action="doStuff.php" method="post">
<input type="text" name="user">
<input type="password" name="password">
<input type="hidden" name="action" value="login">
<input type="submit" value="Login">
</form>
<br />
<form action="doStuff.php" method="post">
<input type="text" name="user">
<input type="password" name="password">
<input type="hidden" name="action" value="register">
<input type="submit" value="Register">
</form>
Then you PHP file would work as a switch($_POST['action']) ... furthermore, they can't click on both links at the same time or make a simultaneous request, each submit is a separate request.
Your PHP would then go on with the switch logic or have different php files doing a login procedure then a registration procedure
Here it goes an example:
$.post("test.php", { 'choices[]': ["Jon", "Susan"] });
Hope it helps.
At first I would use http://ruby.railstutorial.org/.
And database.yml is place where you put setup for database your application use - username, password, host - for each database. With new application you dont need to change anything - simply use default sqlite setup.
This is an issue of selector specificity. (The selector .selected
is less specific than ul.nav li
.)
To fix, use as much specificity in the overriding rule as in the original:
ul.nav li {
background-color:blue;
}
ul.nav li.selected {
background-color:red;
}
You might also consider nixing the ul
, unless there will be other .nav
s. So:
.nav li {
background-color:blue;
}
.nav li.selected {
background-color:red;
}
That's a bit cleaner, less typing, and fewer bits.
If the language you use accepts {}
, you can use [0-9]{4,6}
.
If not, you'll have to use [0-9][0-9][0-9][0-9][0-9]?[0-9]?
.
There are two issues:
To get the coordinates you don't need the Internet. GPS is satellite-based. But to derive street/city information from the coordinates, you'd need either to implement the map and the corresponding algorithms yourself on the device (a lot of work!) or to rely on proven services, e.g. by Google, in which case you'd need an Internet connection.
As of recently, Google allows for caching the maps, which would at least allow you to show your current position on the map even without a data connection, provided, you had cached the map in advance, when you could access the Internet.
Declare correct sys.path list before you call module:
import os, sys
#'/home/user/example/parent/child'
current_path = os.path.abspath('.')
#'/home/user/example/parent'
parent_path = os.path.dirname(current_path)
sys.path.append(parent_path)
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'child.settings')
I think you are looking for JAX-WS authentication in application level, not HTTP basic in server level. See following complete example :
Application Authentication with JAX-WS
On the web service client site, just put your “username” and “password” into request header.
Map<String, Object> req_ctx = ((BindingProvider)port).getRequestContext();
req_ctx.put(BindingProvider.ENDPOINT_ADDRESS_PROPERTY, WS_URL);
Map<String, List<String>> headers = new HashMap<String, List<String>>();
headers.put("Username", Collections.singletonList("someUser"));
headers.put("Password", Collections.singletonList("somePass"));
req_ctx.put(MessageContext.HTTP_REQUEST_HEADERS, headers);
On the web service server site, get the request header parameters via WebServiceContext.
@Resource
WebServiceContext wsctx;
@WebMethod
public String method() {
MessageContext mctx = wsctx.getMessageContext();
Map http_headers = (Map) mctx.get(MessageContext.HTTP_REQUEST_HEADERS);
List userList = (List) http_headers.get("Username");
List passList = (List) http_headers.get("Password");
//...
Add System.ServiceModel
in references
Using SyndicationFeed
:
string url = "http://fooblog.com/feed";
XmlReader reader = XmlReader.Create(url);
SyndicationFeed feed = SyndicationFeed.Load(reader);
reader.Close();
foreach (SyndicationItem item in feed.Items)
{
String subject = item.Title.Text;
String summary = item.Summary.Text;
...
}
Your function is failing because the groupby dataframe you end up with has a hierarchical index and two columns (Letter and N) so when you do .hist()
it's trying to make a histogram of both columns hence the str error.
This is the default behavior of pandas plotting functions (one plot per column) so if you reshape your data frame so that each letter is a column you will get exactly what you want.
df.reset_index().pivot('index','Letter','N').hist()
The reset_index()
is just to shove the current index into a column called index
. Then pivot
will take your data frame, collect all of the values N
for each Letter
and make them a column. The resulting data frame as 400 rows (fills missing values with NaN
) and three columns (A, B, C
). hist()
will then produce one histogram per column and you get format the plots as needed.
Clicking a radio button should trigger an event that either:
self.props.selectionChanged(...)
In the first case, the change is state will trigger a re-render and you can do
<td>chosen site name {this.state.chosenSiteName} </td>
in the second case, the source of the callback will update things to ensure that down the line, your SearchResult instance will have chosenSiteName and chosenAddress set in it's props.
The shortest way is to directly add the below code as additional attributes in the input type that you want to change.
onfocus="if(this.value=='Search')this.value=''"
onblur="if(this.value=='')this.value='Search'"
Please note: Change the text "Search" to "go" or any other text to suit your requirements.
On Linux, macOS and Unix to display the groups to which you belong, use:
id -Gn
which is equivalent to groups
utility which has been obsoleted on Unix (as per Unix manual).
On macOS and Unix, the command id -p
is suggested for normal interactive.
Explanation of the parameters:
-G
,--groups
- print all group IDs
-n
,--name
- print a name instead of a number, for-ugG
-p
- Make the output human-readable.
I will use collection.save(the_changed_dict)
this way. I've just tested this, and it still works for me. The following is quoted directly from pymongo doc.
:
save(to_save[, manipulate=True[, safe=False[, **kwargs]]])
Save a document in this collection.
If to_save already has an "_id" then an update() (upsert) operation is performed and any existing document with that "_id" is overwritten. Otherwise an insert() operation is performed. In this case if manipulate is True an "_id" will be added to to_save and this method returns the "_id" of the saved document. If manipulate is False the "_id" will be added by the server but this method will return None.
You can strip strings in Bash alone:
$ foo="Here is a String"
$ foo=${foo##*Here }
$ echo "$foo"
is a String
$ foo=${foo%% String*}
$ echo "$foo"
is a
$
And if you have a GNU grep that includes PCRE, you can use a zero-width assertion:
$ echo "Here is a String" | grep -Po '(?<=(Here )).*(?= String)'
is a
There is one rather sneaky trick not mentioned here so far. We assume that you have no extra way to store data, but that is not strictly true.
One way around your problem is to do the following horrible thing, which should not be attempted by anyone under any circumstances: Use the network traffic to store data. And no, I don't mean NAS.
You can sort the numbers with only a few bytes of RAM in the following way:
COUNTER
and VALUE
.0
;I
, increment COUNTER
and set VALUE
to max(VALUE, I)
;I
to the router. Erase I
and repeat.Once COUNTER
reaches 1000000
, you have all of the values stored in the incessant stream of ICMP requests, and VALUE
now contains the maximum integer. Pick some threshold T >> 1000000
. Set COUNTER
to zero. Every time you receive an ICMP packet, increment COUNTER
and send the contained integer I
back out in another echo request, unless I=VALUE
, in which case transmit it to the destination for the sorted integers. Once COUNTER=T
, decrement VALUE
by 1
, reset COUNTER
to zero and repeat. Once VALUE
reaches zero you should have transmitted all integers in order from largest to smallest to the destination, and have only used about 47 bits of RAM for the two persistent variables (and whatever small amount you need for the temporary values).
I know this is horrible, and I know there can be all sorts of practical issues, but I thought it might give some of you a laugh or at least horrify you.
Use RC addressing. So, if I want the background color of Col B to depend upon the value in Col C and apply that from Rows 2 though 20:
Steps:
Select R2C2 to R20C2
Click on Conditional Formatting
Select "Use a formula to determine what cells to format"
Type in the formula: =RC[1] > 25
Create the formatting you want (i.e. background color "yellow")
Applies to: Make sure it says: =R2C2:R20C2
** Note that the "magic" takes place in step 4 ... using RC addressing to look at the value one column to the right of the cell being formatted. In this example, I am checking to see if the value of the cell one column to the right of the cell being formatting contains a value greater than 25 (note that you can put pretty much any formula here that returns a T/F value)
import socket
def is_valid_ipv4_address(address):
try:
socket.inet_pton(socket.AF_INET, address)
except AttributeError: # no inet_pton here, sorry
try:
socket.inet_aton(address)
except socket.error:
return False
return address.count('.') == 3
except socket.error: # not a valid address
return False
return True
def is_valid_ipv6_address(address):
try:
socket.inet_pton(socket.AF_INET6, address)
except socket.error: # not a valid address
return False
return True
You may want to look at the Simple XML Serialization project. It is the closest thing I've found to the System.Xml.Serialization in .Net.
AFAIK, you cannot, without actually deep-counting the size of each member in bytes. But again, does the size of a member (like elements inside a collection) count towards the size of the object, or a pointer to that member count towards the size of the object? Depends on how you define it.
I have run into this situation before where I wanted to limit the objects in my cache based on the memory they consumed.
Well, if there is some trick to do that, I'd be delighted to know about it!
I usually create a view and use the DESC
command:
CREATE VIEW tmp_view AS
SELECT
a.name
, a.surname
, b.ordernum
FROM customer a
JOIN orders b
ON a.id = b.id
Then, the DESC
command will show the type of each field.
DESC tmp_view
you may try like this using jquery
var arr = [1,2,2,3,4,5,5,5,6,7,7,8,9,10,10];
var uniqueVals = [];
$.each(arr, function(i, el){
if($.inArray(el, uniqueVals) === -1) uniqueVals.push(el);
});
Handle the Worksheet_Change
event or the Workbook_SheetChange
event.
The event handlers take an argument "Target As Range", so you can check if the range that's changing includes the cell you're interested in.
If you are using Express > 4.0, you could go for serve-favicon
This happens if the .git file is missing in the target path. It happend to me after I executed git clean -f -d
.
I had to delete all target folders showing in the message and then executing git submodule update --remote
I am not sure it's possible with an "automatic" variable. You can always declare one for yourself and increment it:
$letters = { 'A', 'B', 'C' }
$letters | % {$counter = 0}{...;$counter++}
Or use a for
loop instead...
for ($counter=0; $counter -lt $letters.Length; $counter++){...}
Please try this way.
<table border="1">
<tr>
<th scope="col">Header</th>
<th scope="col">Header</th>
<th colspan="2">Header</th>
</tr>
<tr>
<td scope="row"> </td>
<td scope="row"> </td>
<td scope="col">Split this one</td>
<td scope="col">into two columns</td>
</tr>
</table>
After a couple of hours of trying to solve the issue in several ways, some of which are described here, for me (on Win 10) the option of creating a Renviron file worked, but a little different from what was written here above. The task is to change the value of the variable R_LIBS_USER. To do this two steps needed:
R_LIBS_USER=c:/R/Library
It's been working for a few days already.
From Api level 1, you can use the public void setTextSize (float size)
method.
From the documentation:
Set the default text size to the given value, interpreted as "scaled pixel" units. This size is adjusted based on the current density and user font size preference.
Parameters: size -> float: The scaled pixel size.
So you can simple do:
textView.setTextSize(12); // your size in sp
You can index Dictionary, you didn't need 'get'.
Dictionary<string,string> example = new Dictionary<string,string>();
...
example.Add("hello","world");
...
Console.Writeline(example["hello"]);
An efficient way to test/get values is TryGetValue
(thanx to Earwicker):
if (otherExample.TryGetValue("key", out value))
{
otherExample["key"] = value + 1;
}
With this method you can fast and exception-less get values (if present).
Resources:
In a single SQL query, without using the FOR XML clause.
A Common Table Expression is used to recursively concatenate the results.
-- rank locations by incrementing lexicographical order
WITH RankedLocations AS (
SELECT
VehicleID,
City,
ROW_NUMBER() OVER (
PARTITION BY VehicleID
ORDER BY City
) Rank
FROM
Locations
),
-- concatenate locations using a recursive query
-- (Common Table Expression)
Concatenations AS (
-- for each vehicle, select the first location
SELECT
VehicleID,
CONVERT(nvarchar(MAX), City) Cities,
Rank
FROM
RankedLocations
WHERE
Rank = 1
-- then incrementally concatenate with the next location
-- this will return intermediate concatenations that will be
-- filtered out later on
UNION ALL
SELECT
c.VehicleID,
(c.Cities + ', ' + l.City) Cities,
l.Rank
FROM
Concatenations c -- this is a recursion!
INNER JOIN RankedLocations l ON
l.VehicleID = c.VehicleID
AND l.Rank = c.Rank + 1
),
-- rank concatenation results by decrementing length
-- (rank 1 will always be for the longest concatenation)
RankedConcatenations AS (
SELECT
VehicleID,
Cities,
ROW_NUMBER() OVER (
PARTITION BY VehicleID
ORDER BY Rank DESC
) Rank
FROM
Concatenations
)
-- main query
SELECT
v.VehicleID,
v.Name,
c.Cities
FROM
Vehicles v
INNER JOIN RankedConcatenations c ON
c.VehicleID = v.VehicleID
AND c.Rank = 1
To display each content, I use:
mylist = ['foo', 'bar']
indexval = 0
for i in range(len(mylist)):
print(mylist[indexval])
indexval += 1
Example of using in a function:
def showAll(listname, startat):
indexval = startat
try:
for i in range(len(mylist)):
print(mylist[indexval])
indexval = indexval + 1
except IndexError:
print('That index value you gave is out of range.')
Hope I helped.
ht editor can disassemble binaries in many formats. It is similar to Hiew, but open source.
To disassemble, open a binary, then press F6 and then select elf/image.
I wanted to add how I fixed this issue, as I had to do a bit of mix and match from a few different solutions. For reference this is for a Windows 10 PC, nodemon had worked perfectly for months and then suddenly the command was not found unless run locally with npx. Here were my steps -
npm list -g
--depth=0
, in my case it was installed, so to start fresh... npm uninstall -g nodemon
npm install -g --force nodemon --save-dev
(it might be recommended to try running npm install -g nodemon --save-dev
first, go through the rest of the steps, and if it doesn't work go through steps 2 & 3 again using --force).npm config get prefix
, which in my case was located at C:\Users\username\AppData\Roaming\npmexport PATH=%PATH%;C:\Users\username\AppData\Roaming\npm;
(Obviously replace "username" with whatever your username is, or whatever the file path was that was retrieved in step 4)I hope this helps anyone who has been struggling with this issue for as long as I have!
Then add code for the old location path and new destination as follows:
<configuration>
<location path="services.htm">
<system.webServer>
<httpRedirect enabled="true" destination="http://domain.com/services" httpResponseStatus="Permanent" />
</system.webServer>
</location>
<location path="products.htm">
<system.webServer>
<httpRedirect enabled="true" destination="http://domain.com/products" httpResponseStatus="Permanent" />
</system.webServer>
</location>
</configuration>
You may add as many location paths as necessary.
For use of the TextWatcher
...
et1.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
// TODO Auto-generated method stub
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
// TODO Auto-generated method stub
}
@Override
public void afterTextChanged(Editable s) {
// TODO Auto-generated method stub
}
});
Use Javascript's setTimeout:
<body onload="setTimeout(function(){window.location = 'form2.html';}, 5000)">
The requests module may ease your pain.
url = 'http://myserver/post_service'
data = dict(name='joe', age='10')
r = requests.post(url, data=data, allow_redirects=True)
print r.content
Doing flutter clean
actually worked for me
.net Framework allows PictureBox Control to Load Images from url
and Save image in Laod Complete Event
protected void LoadImage() {
pictureBox1.ImageLocation = "PROXY_URL;}
void pictureBox1_LoadCompleted(object sender, AsyncCompletedEventArgs e) {
pictureBox1.Image.Save(destination); }
Run this command :
sudo chown -R yourUser /home/yourUser/.composer
Once you get what abstract means in Java, you would ask: why they put this in ? Java may work without abstract stuff, BUT it makes part of a certain OO style or vocabulary. There exists really situations where an abstract class or method is an elegant way to express the program authors intention. Most when you are programming a framework or a library that will be used by others.
Output in the form of (r,b,g) its look like (255,155,100)
from numpy import random
color = (random.randint(0, 255), random.randint(0, 255), random.randint(0, 255))
And for negatives values:
Public Function IsBetween(Of T)(item As T, pStart As T, pEnd As T) As Boolean ' https://msdn.microsoft.com/fr-fr/library/bb384936.aspx
Dim Deb As T = pStart
Dim Fin As T = pEnd
If (Comparer(Of T).Default.Compare(pStart, pEnd) > 0) Then Deb = pEnd : Fin = pStart
Return Comparer(Of T).Default.Compare(item, Deb) >= 0 AndAlso Comparer(Of T).Default.Compare(item, Fin) <= 0
End Function
I wasn't happy with any of these approaches, so I came up with a Flexlist
class that allows for flexible indexing, either by integer, slice or index-list:
class Flexlist(list):
def __getitem__(self, keys):
if isinstance(keys, (int, slice)): return list.__getitem__(self, keys)
return [self[k] for k in keys]
Which, for your example, you would use as:
L = Flexlist(['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h'])
Idx = [0, 3, 7]
T = L[ Idx ]
print(T) # ['a', 'd', 'h']
Some decent answers, but just thought I'd expand a bit to explain more clearly when PHP determines if an array is empty.
Main Notes:
An array with a key (or keys) will be determined as NOT empty by PHP.
As array values need keys to exist, having values or not in an array doesn't determine if it's empty, only if there are no keys (AND therefore no values).
So checking an array with empty()
doesn't simply tell you if you have values or not, it tells you if the array is empty, and keys are part of an array.
So consider how you are producing your array before deciding which checking method to use.
EG An array will have keys when a user submits your HTML form when each form field has an array name (ie name="array[]"
).
A non empty array will be produced for each field as there will be auto incremented key values for each form field's array.
Take these arrays for example:
/* Assigning some arrays */
// Array with user defined key and value
$ArrayOne = array("UserKeyA" => "UserValueA", "UserKeyB" => "UserValueB");
// Array with auto increment key and user defined value
// as a form field would return with user input
$ArrayTwo[] = "UserValue01";
$ArrayTwo[] = "UserValue02";
// Array with auto incremented key and no value
// as a form field would return without user input
$ArrayThree[] = '';
$ArrayThree[] = '';
If you echo out the array keys and values for the above arrays, you get the following:
ARRAY ONE:
[UserKeyA] => [UserValueA]
[UserKeyB] => [UserValueB]ARRAY TWO:
[0] => [UserValue01]
[1] => [UserValue02]ARRAY THREE:
[0] => []
[1] => []
And testing the above arrays with empty()
returns the following results:
ARRAY ONE:
$ArrayOne is not emptyARRAY TWO:
$ArrayTwo is not emptyARRAY THREE:
$ArrayThree is not empty
An array will always be empty when you assign an array but don't use it thereafter, such as:
$ArrayFour = array();
This will be empty, ie PHP will return TRUE when using if empty()
on the above.
So if your array has keys - either by eg a form's input names or if you assign them manually (ie create an array with database column names as the keys but no values/data from the database), then the array will NOT be empty()
.
In this case, you can loop the array in a foreach, testing if each key has a value. This is a good method if you need to run through the array anyway, perhaps checking the keys or sanitising data.
However it is not the best method if you simply need to know "if values exist" returns TRUE or FALSE. There are various methods to determine if an array has any values when it's know it will have keys. A function or class might be the best approach, but as always it depends on your environment and exact requirements, as well as other things such as what you currently do with the array (if anything).
Here's an approach which uses very little code to check if an array has values:
Using array_filter()
:
Iterates over each value in the array passing them to the callback function. If the callback function returns true, the current value from array is returned into the result array. Array keys are preserved.
$EmptyTestArray = array_filter($ArrayOne);
if (!empty($EmptyTestArray))
{
// do some tests on the values in $ArrayOne
}
else
{
// Likely not to need an else,
// but could return message to user "you entered nothing" etc etc
}
Running array_filter()
on all three example arrays (created in the first code block in this answer) results in the following:
ARRAY ONE:
$arrayone is not emptyARRAY TWO:
$arraytwo is not emptyARRAY THREE:
$arraythree is empty
So when there are no values, whether there are keys or not, using array_filter()
to create a new array and then check if the new array is empty shows if there were any values in the original array.
It is not ideal and a bit messy, but if you have a huge array and don't need to loop through it for any other reason, then this is the simplest in terms of code needed.
I'm not experienced in checking overheads, but it would be good to know the differences between using array_filter()
and foreach
checking if a value is found.
Obviously benchmark would need to be on various parameters, on small and large arrays and when there are values and not etc.
value.replaceAll("[^A-Za-z0-9]", "")
[^abc]
When a caret^
appears as the first character inside square brackets, it negates the pattern. This pattern matches any character except a or b or c.
Looking at the keyword as two function:
[(Pattern)] = match(Pattern)
[^(Pattern)] = notMatch(Pattern)
Moreover regarding a pattern:
A-Z = all characters included from A to Z
a-z = all characters included from a to z
0=9 = all characters included from 0 to 9
Therefore it will substitute all the char NOT included in the pattern
I am not sure if I fully understand your problem but since I had similar issue recently I will try to help you out.
Vendor bundle.
You should use CommonsChunkPlugin for that. in the configuration you specify the name of the chunk (e.g. vendor
), and file name that will be generated (vendor.js
).
new webpack.optimize.CommonsChunkPlugin("vendor", "vendor.js", Infinity),
Now important part, you have to now specify what does it mean vendor
library and you do that in an entry section. One one more item to entry list with the same name as the name of the newly declared chunk (i.e. 'vendor' in this case). The value of that entry should be the list of all the modules that you want to move to vendor
bundle.
in your case it should look something like:
entry: {
app: 'entry.js',
vendor: ['jquery', 'jquery.plugin1']
}
JQuery as global
Had the same problem and solved it with ProvidePlugin. here you are not defining global object but kind of shurtcuts to modules. i.e. you can configure it like that:
new webpack.ProvidePlugin({
$: "jquery"
})
And now you can just use $
anywhere in your code - webpack will automatically convert that to
require('jquery')
I hope it helped. you can also look at my webpack configuration file that is here
I love webpack, but I agree that the documentation is not the nicest one in the world... but hey.. people were saying same thing about Angular documentation in the begining :)
Edit:
To have entrypoint-specific vendor chunks just use CommonsChunkPlugins multiple times:
new webpack.optimize.CommonsChunkPlugin("vendor-page1", "vendor-page1.js", Infinity),
new webpack.optimize.CommonsChunkPlugin("vendor-page2", "vendor-page2.js", Infinity),
and then declare different extenral libraries for different files:
entry: {
page1: ['entry.js'],
page2: ['entry2.js'],
"vendor-page1": [
'lodash'
],
"vendor-page2": [
'jquery'
]
},
If some libraries are overlapping (and for most of them) between entry points then you can extract them to common file using same plugin just with different configuration. See this example.
with $.getJSON()) there is no any error callback only you can track succeed callback and there no standard setting supported like beforeSend, statusCode, mimeType etc, if you want it use $.ajax().
Do you really need to "build" it from javascript or can you simply return the built HTML from PHP and insert it into the DOM?
Right click on your project -> properties -> build path. Add to your build path jar
file(s) that have the javax.servlet
implemenation. Ite depends on your servlet container or application server what file(s) you need to include, so search for that information.
I am using this:
<div key={+new Date() + Math.random()}>
just had the same question, and answered this way, if this could help.
select *
from table
where start_date between '2012-01-01' and '2012-04-13'
or end_date between '2012-01-01' and '2012-04-13'
You can use Arrays.asList to get some list (not necessarily ArrayList) and then use addAll() to add it to an ArrayList:
new ArrayList<Double>().addAll(Arrays.asList(1.38L, 2.56L, 4.3L));
If you're using Java6 (or higher) you can also use the ArrayList constructor that takes another list:
new ArrayList<Double>(Arrays.asList(1.38L, 2.56L, 4.3L));
If you are using Matplotlib and are trying to get good figures in a LaTeX document, save as an EPS. Specifically, try something like this after running the commands to plot the image:
plt.savefig('destination_path.eps', format='eps')
I have found that EPS files work best and the dpi
parameter is what really makes them look good in a document.
To specify the orientation of the figure before saving, simply call the following before the plt.savefig
call, but after creating the plot (assuming you have plotted using an axes with the name ax
):
ax.view_init(elev=elevation_angle, azim=azimuthal_angle)
Where elevation_angle
is a number (in degrees) specifying the polar angle (down from vertical z axis) and the azimuthal_angle
specifies the azimuthal angle (around the z axis).
I find that it is easiest to determine these values by first plotting the image and then rotating it and watching the current values of the angles appear towards the bottom of the window just below the actual plot. Keep in mind that the x, y, z, positions appear by default, but they are replaced with the two angles when you start to click+drag+rotate the image.
EDIT: In summary, back in 2010 when this question was asked the most common way to solve this problem was to save a reference to the context where the setTimeout
function call is made, because setTimeout
executes the function with this
pointing to the global object:
var that = this;
if (this.options.destroyOnHide) {
setTimeout(function(){ that.tip.destroy() }, 1000);
}
In the ES5 spec, just released a year before that time, it introduced the bind
method, this wasn't suggested in the original answer because it wasn't yet widely supported and you needed polyfills to use it but now it's everywhere:
if (this.options.destroyOnHide) {
setTimeout(function(){ this.tip.destroy() }.bind(this), 1000);
}
The bind
function creates a new function with the this
value pre-filled.
Now in modern JS, this is exactly the problem arrow functions solve in ES6:
if (this.options.destroyOnHide) {
setTimeout(() => { this.tip.destroy() }, 1000);
}
Arrow functions do not have a this
value of its own, when you access it, you are accessing the this
value of the enclosing lexical scope.
HTML5 also standardized timers back in 2011, and you can pass now arguments to the callback function:
if (this.options.destroyOnHide) {
setTimeout(function(that){ that.tip.destroy() }, 1000, this);
}
See also:
If you are stuck with a legacy database where someone already placed JPA annotations on but did NOT define the relationships and you are now trying to define them for use in your code, then you might NOT be able to delete the customerId @Column
since other code may directly reference it already. In that case, define the relationships as follows:
@ManyToOne(optional=false)
@JoinColumn(name="productId",referencedColumnName="id_product", insertable=false, updatable=false)
private Product product;
@ManyToOne(optional=false)
@JoinColumn(name="customerId",referencedColumnName="id_customer", insertable=false, updatable=false)
private Customer customer;
This allows you to access the relationships. However, to add/update to the relationships you will have to manipulate the foreign keys directly via their defined @Column
values. It's not an ideal situation, but if you are handed this sort of situation, at least you can define the relationships so that you can use JPQL successfully.
I find myself forgetting how to do this every time as well so I just wrap the two one-liners that I need in a little class:
public class Utility
{
/// <summary>
/// Takes the full name of a resource and loads it in to a stream.
/// </summary>
/// <param name="resourceName">Assuming an embedded resource is a file
/// called info.png and is located in a folder called Resources, it
/// will be compiled in to the assembly with this fully qualified
/// name: Full.Assembly.Name.Resources.info.png. That is the string
/// that you should pass to this method.</param>
/// <returns></returns>
public static Stream GetEmbeddedResourceStream(string resourceName)
{
return Assembly.GetExecutingAssembly().GetManifestResourceStream(resourceName);
}
/// <summary>
/// Get the list of all emdedded resources in the assembly.
/// </summary>
/// <returns>An array of fully qualified resource names</returns>
public static string[] GetEmbeddedResourceNames()
{
return Assembly.GetExecutingAssembly().GetManifestResourceNames();
}
}
Eg:
Datatable newTable = new DataTable();
foreach(string s1 in list)
{
if (s1 != string.Empty) {
dvProducts.RowFilter = "(CODE like '" + serachText + "*') AND (CODE <> '" + s1 + "')";
foreach(DataRow dr in dvProducts.ToTable().Rows)
{
newTable.ImportRow(dr);
}
}
}
ListView1.DataSource = newTable;
ListView1.DataBind();
I recommend you to checkout @angular-material-components/datetime-picker. This is a DatetimePicker like @angular/material Datepicker by adding support for choosing time.
If all images are of the same format:
import cv2
import glob
images = [cv2.imread(file) for file in glob.glob('path/to/files/*.jpg')]
For reading images of different formats:
import cv2
import glob
imdir = 'path/to/files/'
ext = ['png', 'jpg', 'gif'] # Add image formats here
files = []
[files.extend(glob.glob(imdir + '*.' + e)) for e in ext]
images = [cv2.imread(file) for file in files]
You can get the value from collection using for-each loop or using iterator interface. For a Collection c
for (<ElementType> elem: c)
System.out.println(elem);
or Using Iterator Interface
Iterator it = c.iterator();
while (it.hasNext())
System.out.println(it.next());
If I understand correctly the question, you want to have a JavaScript code in your Controller. (Your question is clear enough, but the voted and accepted answers are throwing some doubt)
So: you can do this by using the .NET's System.Windows.Forms.WebBrowser
control to execute javascript code, and everything that a browser can do. It requires reference to System.Windows.Forms though, and the interaction is somewhat "old school". E.g:
void webBrowser1_DocumentCompleted(object sender,
WebBrowserDocumentCompletedEventArgs e)
{
HtmlElement search = webBrowser1.Document.GetElementById("searchInput");
if(search != null)
{
search.SetAttribute("value", "Superman");
foreach(HtmlElement ele in search.Parent.Children)
{
if (ele.TagName.ToLower() == "input" && ele.Name.ToLower() == "go")
{
ele.InvokeMember("click");
break;
}
}
}
}
So probably nowadays, that would not be the easiest solution.
The other option is to use Javascript .NET or jint to run javasctipt, or another solution, based on the specific case.
Some related questions on this topic or possible duplicates:
Embedding JavaScript engine into .NET
Load a DOM and Execute javascript, server side, with .Net
Hope this helps.
As mentioned before, you can manually edit your project's .csproj
file in order to apply it manually.
I also noticed that Visual Studio 2013 attempts to apply a relative path to the reference hintpath, probably because of an attempt to make the project file more portable.
This issue came for me due to the fact that .. i was running server with selenium-server-standalone-2.32.0 and client registered with selenium-server-standalone-2.37.0 .. When i made both selenium-server-standalone-2.32.0 and ran then things worked fine
In case someone having a problem like i had. I was using the parenthesis with the return statement on the same line at which i had written the rest of the code. Also, i used map function and props so i got so many brackets. In this case, if you're new to React you can avoid the brackets around the props, because now everyone prefers to use the arrow functions. And in the map function you can also avoid the brackets around your function callback.
props.sample.map(function callback => (
));
like so. In above code sample you can see there is only opening parenthesis at the left of the function callback.
Open ES explorer -> push Menu button at the left upper corner (three horizontal stripes) -> in the Libraries section choose APPs.
Thus, you get the list of all the user apps. Find your app and select it with long pushing on it. Then press "More" in the right low corner and choose "Send". Then you can use different options, e.g. you can choose "ES Save To" in order to save the .apk file to your home directory or anywhere else.
The abs() in the while condition is needed, since, well, it controls the number of iterations (how would you define a negative number of iterations?). You can correct it by inverting the sign of the result if numb
is negative.
So this is the modified version of your code. Note I replaced the while loop with a cleaner for loop.
#get user input of numbers as variables
numa, numb = input("please give 2 numbers to multiply seperated with a comma:")
#standing variables
total = 0
#output the total
for count in range(abs(numb)):
total += numa
if numb < 0:
total = -total
print total
Be aware that Total Server Memory is NOT how much memory SQL Server is currently using.
refer to this Microsoft article: http://msdn.microsoft.com/en-us/library/ms190924.aspx
This image illustrates this concept well. Unfortunately, I could not find the original source of this image, but someone made it, he has shown this concept very well in the form of an image.
Quickfix
I had similar issue and I resolved it doing the following
Alternative 1: Disable sandbox
As this article explains in depth, groovy scripts are run in sandbox mode by default. This means that a subset of groovy methods are allowed to run without administrator approval. It's also possible to run scripts not in sandbox mode, which implies that the whole script needs to be approved by an administrator at once. This preventing users from approving each line at the time.
Running scripts without sandbox can be done by unchecking this checkbox in your project config just below your script:
Alternative 2: Disable script security
As this article explains it also possible to disable script security completely. First install the permissive script security plugin and after that change your jenkins.xml file add this argument:
-Dpermissive-script-security.enabled=true
So you jenkins.xml will look something like this:
<executable>..bin\java</executable>
<arguments>-Dpermissive-script-security.enabled=true -Xrs -Xmx4096m -Dhudson.lifecycle=hudson.lifecycle.WindowsServiceLifecycle -jar "%BASE%\jenkins.war" --httpPort=80 --webroot="%BASE%\war"</arguments>
Make sure you know what you are doing if you implement this!
UPDATE:
This only worked for me because our existing generated html was wacky, generating label
s along with radio
s and giving them both checked
attribute.
Never mind, and big ups for Brilliand for bringing it up!
If your label is a sibling of a checkbox (which is usually the case), you can use the ~
sibling selector, and a label[for=your_checkbox_id]
to address it... or give the label an id if you have multiple labels (like in this example where I use labels for buttons)
Came here looking for the same - but ended up finding my answer in the docs.
a label
element with checked
attribute can be selected like so:
label[checked] {
...
}
I know it's an old question, but maybe it helps someone out there :)
How to write a basic PHP Ternary Operator:
($your_boolean) ? 'This is returned if true' : 'This is returned if false';
Example:
$myboolean = true;
echo ($myboolean) ? 'foobar' : "penguin";
foobar
echo (!$myboolean) ? 'foobar' : "penguin";
penguin
A PHP ternary operator with an 'elseif' crammed in there:
$chow = 3;
echo ($chow == 1) ? "one" : ($chow == 2) ? "two" : "three";
three
But please don't nest ternary operators except for parlor tricks. It's a bad code smell.
If you want to create a cmd shortcut (for example on your desktop) add /k parameter (/k means keep, /c will close window):
cmd /k echo hello && cd c:\ && cd Windows
The problem with singletons is not their implementation. It is that they conflate two different concepts, neither of which is obviously desirable.
1) Singletons provide a global access mechanism to an object. Although they might be marginally more threadsafe or marginally more reliable in languages without a well-defined initialization order, this usage is still the moral equivalent of a global variable. It's a global variable dressed up in some awkward syntax (foo::get_instance() instead of g_foo, say), but it serves the exact same purpose (a single object accessible across the entire program) and has the exact same drawbacks.
2) Singletons prevent multiple instantiations of a class. It's rare, IME, that this kind of feature should be baked into a class. It's normally a much more contextual thing; a lot of the things that are regarded as one-and-only-one are really just happens-to-be-only-one. IMO a more appropriate solution is to just create only one instance--until you realize that you need more than one instance.
Doesn't sun have their own now? What's this:
http://www.java2s.com/Open-Source/Java-Document/6.0-JDK-Modules-com.sun/istack/com.sun.istack.internal.htm
This seems to be packaged with all the versions of Java I've used within the last few years.
Edit: As mentioned in the comments below, you probably don't want to use these. In that case, my vote is for the IntelliJ jetbrains annotations!
There are some webkit css properties that should work on Chrome/Safari at least:
-webkit-text-stroke-width: 2px;
-webkit-text-stroke-color: black;
That's a 2px wide black text outline.
Try this
string[] keys = Request.Form.AllKeys;
var value = "";
for (int i= 0; i < keys.Length; i++)
{
// here you get the name eg test[0].quantity
// keys[i];
// to get the value you use
value = Request.Form[keys[i]];
}
You should always avoid using system()
because
You should use CreateProcess().
You can use Createprocess() to just start up an .exe and creating a new process for it. The application will run independent from the calling application.
Here's an example I used in one of my projects:
#include <windows.h>
VOID startup(LPCTSTR lpApplicationName)
{
// additional information
STARTUPINFO si;
PROCESS_INFORMATION pi;
// set the size of the structures
ZeroMemory( &si, sizeof(si) );
si.cb = sizeof(si);
ZeroMemory( &pi, sizeof(pi) );
// start the program up
CreateProcess( lpApplicationName, // the path
argv[1], // Command line
NULL, // Process handle not inheritable
NULL, // Thread handle not inheritable
FALSE, // Set handle inheritance to FALSE
0, // No creation flags
NULL, // Use parent's environment block
NULL, // Use parent's starting directory
&si, // Pointer to STARTUPINFO structure
&pi // Pointer to PROCESS_INFORMATION structure (removed extra parentheses)
);
// Close process and thread handles.
CloseHandle( pi.hProcess );
CloseHandle( pi.hThread );
}
EDIT: The error you are getting is because you need to specify the path of the .exe file not just the name. Openfile.exe probably doesn't exist.
Another method is by using the menu within visual studio. Project -> Add Reference... I recommend copying the needed .dll to your resource folder, or local project folder.
Did you try the substring
function?
string = string.indexOf(0) == '0' ? string.substring(1) : string;
Here's a reference - https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/String/substring
And you can always do this for multiple 0s:
while(string.indexOf(0) == '0')
{
string = string.substring(1);
}
Mates,
I stumbled upon this error today while testing a simple script. I am not using "class" function though so it take it with grain of salt. I was calling function before its definition & declaration ...something like this
try{
foo();
}
catch (exception $e)
{
echo "$e->getMessage()";
}
function foo(){
echo "blah blah blah";
}
so php was throwing me error "call to undefined function ".
This kinda seem classic programming error but may help someone in need of clue.
A backreference to the whole match value is \g<0>
, see re.sub
documentation:
The backreference
\g<0>
substitutes in the entire substring matched by the RE.
See the Python demo:
import re
method = 'images/:id/huge'
print(re.sub(r':[a-z]+', r'<span>\g<0></span>', method))
# => images/<span>:id</span>/huge
March 2014: Good news! Python 3.4 ships with Pip. Pip has long been Python's de-facto standard package manager. You can install a package like this:
pip install httpie
Wahey! This is the best feature of any Python release. It makes the community's wealth of libraries accessible to everyone. Newbies are no longer excluded from using community libraries by the prohibitive difficulty of setup.
However, there remains a number of outstanding frustrations with the Python packaging experience. Cumulatively, they make Python very unwelcoming for newbies. Also, the long history of neglect (ie. not shipping with a package manager for 14 years from Python 2.0 to Python 3.3) did damage to the community. I describe both below.
It's important to understand that while experienced users are able to work around these frustrations, they are significant barriers to people new to Python. In fact, the difficulty and general user-unfriendliness is likely to deter many of them.
Every language with a package manager has an official (or quasi-official) repository for the community to download and publish packages. Python has the Python Package Index, PyPI. https://pypi.python.org/pypi
Let's compare its pages with those of RubyGems and Npm (the Node package manager).
rails
express
simplejson
You'll see the RubyGems and Npm pages both begin with a one-line description of the package, then large friendly instructions how to install it.
Meanwhile, woe to any hapless Python user who naively browses to PyPI. On https://pypi.python.org/pypi/simplejson/ , they'll find no such helpful instructions. There is however, a large green 'Download' link. It's not unreasonable to follow it. Aha, they click! Their browser downloads a .tar.gz
file. Many Windows users can't even open it, but if they persevere they may eventually extract it, then run setup.py
and eventually with the help of Google setup.py install
. Some will give up and reinvent the wheel..
Of course, all of this is wrong. The easiest way to install a package is with a Pip command. But PyPI didn't even mention Pip. Instead, it led them down an archaic and tedious path.
Numpy is one of Python's most popular libraries. Try to install it with Pip, you get this cryptic error message:
Error: Unable to find vcvarsall.bat
Trying to fix that is one of the most popular questions on Stack Overflow: "error: Unable to find vcvarsall.bat"
Few people succeed.
For comparison, in the same situation, Ruby prints this message, which explains what's going on and how to fix it:
Please update your PATH to include build tools or download the DevKit from http://rubyinstaller.org/downloads and follow the instructions at http://github.com/oneclick/rubyinstaller/wiki/Development-Kit
Ruby and Nodejs ship with full-featured package managers, Gem (since 2007) and Npm (since 2011), and have nurtured sharing communities centred around GitHub. Npm makes publishing packages as easy as installing them, it already has 64k packages. RubyGems lists 72k packages. The venerable Python package index lists only 41k.
Flying in the face of its "batteries included" motto, Python shipped without a package manager until 2014.
Until Pip, the de facto standard was a command easy_install
. It was woefully inadequate. The was no command to uninstall packages.
Pip was a massive improvement. It had most the features of Ruby's Gem. Unfortunately, Pip was--until recently--ironically difficult to install. In fact, the problem remains a top Python question on Stack Overflow: "How do I install pip on Windows?"
Your code is
urlpatterns = [
url(r'^$', 'myapp.views.home'),
url(r'^contact/$', 'myapp.views.contact'),
url(r'^login/$', 'django.contrib.auth.views.login'),
]
change it to following as you're importing include()
function :
urlpatterns = [
url(r'^$', views.home),
url(r'^contact/$', views.contact),
url(r'^login/$', views.login),
]
You can add the meta tag:
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
A brief explanation on what it is and how it works is found on this link.
You can use twiny to create 2 x-axis scales. For Example:
import numpy as np
import matplotlib.pyplot as plt
fig = plt.figure()
ax1 = fig.add_subplot(111)
ax2 = ax1.twiny()
a = np.cos(2*np.pi*np.linspace(0, 1, 60.))
ax1.plot(range(60), a)
ax2.plot(range(100), np.ones(100)) # Create a dummy plot
ax2.cla()
plt.show()
Ref: http://matplotlib.sourceforge.net/faq/howto_faq.html#multiple-y-axis-scales
Output:
I do recommend BarcodeLibrary
Here is a small piece of code of how to use it.
BarcodeLib.Barcode barcode = new BarcodeLib.Barcode()
{
IncludeLabel = true,
Alignment = AlignmentPositions.CENTER,
Width = 300,
Height = 100,
RotateFlipType = RotateFlipType.RotateNoneFlipNone,
BackColor = Color.White,
ForeColor = Color.Black,
};
Image img = barcode.Encode(TYPE.CODE128B, "123456789");
You can try of the following type :
#!/bin/bash
declare -a arr
i=0
j=0
for dir in $(find /home/rmajeti/programs -type d)
do
arr[i]=$dir
i=$((i+1))
done
while [ $j -lt $i ]
do
echo ${arr[$j]}
j=$((j+1))
done
You've got the right idea, so here's how to go ahead: the onclick
handlers run on the client side, in the browser, so you cannot call a PHP function directly. Instead, you need to add a JavaScript function that (as you mentioned) uses AJAX to call a PHP script and retrieve the data. Using jQuery, you can do something like this:
<script type="text/javascript">
function recp(id) {
$('#myStyle').load('data.php?id=' + id);
}
</script>
<a href="#" onClick="recp('1')" > One </a>
<a href="#" onClick="recp('2')" > Two </a>
<a href="#" onClick="recp('3')" > Three </a>
<div id='myStyle'>
</div>
Then you put your PHP code into a separate file: (I've called it data.php
in the above example)
<?php
require ('myConnect.php');
$id = $_GET['id'];
$results = mysql_query("SELECT para FROM content WHERE para_ID='$id'");
if( mysql_num_rows($results) > 0 )
{
$row = mysql_fetch_array( $results );
echo $row['para'];
}
?>
use sep='\s*,\s*'
so that you will take care of spaces in column-names:
transactions = pd.read_csv('transactions.csv', sep=r'\s*,\s*',
header=0, encoding='ascii', engine='python')
alternatively you can make sure that you don't have unquoted spaces in your CSV file and use your command (unchanged)
prove:
print(transactions.columns.tolist())
Output:
['product_id', 'customer_id', 'store_id', 'promotion_id', 'month_of_year', 'quarter', 'the_year', 'store_sales', 'store_cost', 'unit_sales', 'fact_count']
$(".thisClass[id!='thisId']").doAction();
Documentation on selectors: http://api.jquery.com/category/selectors/
For me worked:
Sys.setlocale("LC_MESSAGES", "en_US.utf8")
Testing:
> Sys.setlocale("LC_MESSAGES", "en_US.utf8")
[1] "en_US.utf8"
> x[3]
Error: object 'x' not found
Also working to get english messages:
Sys.setlocale("LC_MESSAGES", "C")
To reset to german messages I used
Sys.setlocale("LC_MESSAGES", "de_DE.utf8")
Here is the start of my sessionInfo
:
> sessionInfo()
R version 3.4.1 (2017-06-30)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: Ubuntu 16.04.2 LTS
Every time setColor
gets hit, you are setting count = 1. You would need to define count
outside of the scope of the function. Example:
var count=1;
function setColor(btn, color){
var property = document.getElementById(btn);
if (count == 0){
property.style.backgroundColor = "#FFFFFF"
count=1;
}
else{
property.style.backgroundColor = "#7FFF00"
count=0;
}
}
The width attribute of <td>
is deprecated in HTML 5.
Use CSS. e.g.
<td style="width:100px">
in detail, like this:
<table >
<tr>
<th>Month</th>
<th>Savings</th>
</tr>
<tr>
<td style="width:70%">January</td>
<td style="width:30%">$100</td>
</tr>
<tr>
<td>February</td>
<td>$80</td>
</tr>
</table>
You need to create a TypeReference
object for each generic type you use and use that for deserialization. For example -
mapper.readValue(jsonString, new TypeReference<Data<String>>() {});
Well it has a simple and easy solution. You can make your video easily to fit for any device and screen size. Here is the HTML and CSS code:
.yt-container {_x000D_
position:relative;_x000D_
padding-bottom:56.25%;_x000D_
padding-top:30px;_x000D_
height:0;_x000D_
overflow:hidden;_x000D_
}_x000D_
_x000D_
.yt-container iframe, .yt-container object, .yt-container embed {_x000D_
position:absolute;_x000D_
top:0;_x000D_
left:0;_x000D_
width:100%;_x000D_
height:100%;_x000D_
}
_x000D_
<div class="yt-container">_x000D_
<iframe src="https://www.youtube.com/embed/hfQdkBOxXTc" frameborder="0" allowfullscreen></iframe>_x000D_
</div>
_x000D_
Source: https://www.codespeedy.com/make-youtube-embed-video-responsive-using-css/
Don't use a reg-ex.
Apparently the following is a reg-ex that correctly validates most e-mails addresses that conform to RFC 2822, (and will still fail on things like "[email protected]", as will org.apache.commons.validator.routines.EmailValidator)
(?:[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*|"(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21\x23-\x5b\x5d-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])*")@(?:(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?|\[(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?|[a-z0-9-]*[a-z0-9]:(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21-\x5a\x53-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])+)\])
Possibly the easiest way to validate an e-mail to just send a confirmation e-mail to the address provided and it it bounces then it's not valid.
If you want to perform some basic checks you could just check that it's in the form *@*
If you have some business logic specific validation then you could perform that using a regex, e.g. must be a gmail.com account or something.
If you have this :
a = [[1, 1], [2, 1],[3, 1]]
You can easily access this by using :
print(a[0][2])
a[0][1] = 7
print(a)
The trick is to add both max-height: 100%;
and max-width: 100%;
to .container img
. Example CSS:
.container {
width: 300px;
border: dashed blue 1px;
}
.container img {
max-height: 100%;
max-width: 100%;
}
In this way, you can vary the specified width of .container
in whatever way you want (200px or 10% for example), and the image will be no larger than its natural dimensions. (You could specify pixels instead of 100% if you didn't want to rely on the natural size of the image.)
Here's the whole fiddle: http://jsfiddle.net/KatieK/Su28P/1/
JSDB, available for Linux, Windows, and Mac should fit the bill pretty well. It uses Mozilla's Spidermonkey Javascript engine and seems to be less of a hassle to install compared to node.js (at least last time I tried node.js a couple of years ago).
I found JSDB from this interesting list of Javascript shells: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Shells
Like others mentioned in this thread, replacing the entire body HTML is a bad idea because it reinserts the entire DOM and can potentially break any other javascript that was acting on those elements.
Instead, replace just the text on your page and not the DOM elements themselves using jQuery filter:
$('body :not(script)').contents().filter(function() {
return this.nodeType === 3;
}).replaceWith(function() {
return this.nodeValue.replace('-9o0-9909','The new string');
});
this.nodeType is the type of node we are looking to replace the contents of. nodeType 3 is text. See the full list here.
These are all really good, written by academia and (some) are books (an unpublished oreilly book --translated from French, but no issues I've found), for example). I've *'d my favorite ones that helped me the most.
ocaml :
Haskell :
The idiom designed into the C language (and inherited into C++) for infinite looping is for(;;)
: the omission of a test form. The do/while
and while
loops do not have this special feature; their test expressions are mandatory.
for(;;)
does not express "loop while some condition is true that happens to always be true". It expresses "loop endlessly". No superfluous condition is present.
Therefore, the for(;;)
construct is the canonical endless loop. This is a fact.
All that is left to opinion is whether or not to write the canonical endless loop, or to choose something baroque which involves extra identifiers and constants, to build a superfluous expression.
Even if the test expression of while
were optional, which it isn't, while();
would be strange. while
what? By contrast, the answer to the question for
what? is: why, ever---for ever! As a joke some programmers of days past have defined blank macros, so they could write for(ev;e;r);
.
while(true)
is superior to while(1)
because at least it doesn't involve the kludge that 1 represents truth. However, while(true)
didn't enter into C until C99. for(;;)
exists in every version of C going back to the language described in the 1978 book K&R1, and in every dialect of C++, and even related languages. If you're coding in a code base written in C90, you have to define your own true
for while (true)
.
while(true)
reads badly. While what is true? We don't really want to see the identifier true
in code, except when we are initializing boolean variables or assigning to them. true
need not ever appear in conditional tests. Good coding style avoids cruft like this:
if (condition == true) ...
in favor of:
if (condition) ...
For this reason while (0 == 0)
is superior to while (true)
: it uses an actual condition that tests something, which turns into a sentence: "loop while zero is equal to zero." We need a predicate to go nicely with "while"; the word "true" isn't a predicate, but the relational operator ==
is.
This is a combined answer of the two answers at top, if anyone wants a working implementation.
package com.yourapplication;
import android.content.Context;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewConfiguration;
public abstract class OnSwipeListener implements View.OnTouchListener {
private final GestureDetector gestureDetector;
public OnSwipeListener(Context context){
gestureDetector = new GestureDetector(context, new OnSwipeGestureListener(context));
gestureDetector.setIsLongpressEnabled(false);
}
@Override
public boolean onTouch(View view, MotionEvent event) {
return gestureDetector.onTouchEvent(event);
}
private final class OnSwipeGestureListener extends GestureDetector.SimpleOnGestureListener {
private final int minSwipeDelta;
private final int minSwipeVelocity;
private final int maxSwipeVelocity;
private OnSwipeGestureListener(Context context) {
ViewConfiguration configuration = ViewConfiguration.get(context);
// We think a swipe scrolls a full page.
//minSwipeDelta = configuration.getScaledTouchSlop();
minSwipeDelta = configuration.getScaledPagingTouchSlop();
minSwipeVelocity = configuration.getScaledMinimumFlingVelocity();
maxSwipeVelocity = configuration.getScaledMaximumFlingVelocity();
}
@Override
public boolean onDown(MotionEvent event) {
// Return true because we want system to report subsequent events to us.
return true;
}
// NOTE: see http://stackoverflow.com/questions/937313/android-basic-gesture-detection
@Override
public boolean onFling(MotionEvent event1, MotionEvent event2, float velocityX,
float velocityY) {
boolean result = false;
try {
float deltaX = event2.getX() - event1.getX();
float deltaY = event2.getY() - event1.getY();
float absVelocityX = Math.abs(velocityX);
float absVelocityY = Math.abs(velocityY);
float absDeltaX = Math.abs(deltaX);
float absDeltaY = Math.abs(deltaY);
if (absDeltaX > absDeltaY) {
if (absDeltaX > minSwipeDelta && absVelocityX > minSwipeVelocity
&& absVelocityX < maxSwipeVelocity) {
if (deltaX < 0) {
onSwipeLeft();
} else {
onSwipeRight();
}
}
result = true;
} else if (absDeltaY > minSwipeDelta && absVelocityY > minSwipeVelocity
&& absVelocityY < maxSwipeVelocity) {
if (deltaY < 0) {
onSwipeTop();
} else {
onSwipeBottom();
}
}
result = true;
} catch (Exception e) {
e.printStackTrace();
}
return result;
}
}
public void onSwipeLeft() {}
public void onSwipeRight() {}
public void onSwipeTop() {}
public void onSwipeBottom() {}
}
I went ahead and created a closure for this (in Swift 3).
let (m, s) = { (secs: Int) -> (Int, Int) in
return ((secs % 3600) / 60, (secs % 3600) % 60) }(299)
This will give m = 4 and s = 59. So you can format that as you wish. You may of course want to add hours as well, if not more information.
If you want to open a specific browser (e.g. Chrome and Chromium) with command line options like full screen or kiosk mode and also want to be able to kill it later on, then this might work for you:
from threading import Timer
from time import sleep
import subprocess
import platform
# Hint 1: to enable F11 use --start-fullscreen instead of --kiosk, otherwise Alt+F4 to close the browser
# Hint 2: fullscreen will only work if chrome is not already running
platform_browser = {
'Windows': r'"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe" --kiosk http://stackoverflow.com',
'Linux' : ['/usr/bin/chromium-browser', '--kiosk', 'http://stackoverflow.com']
}
browser = None
def open_browser():
global browser
platform_name = platform.system()
if platform_name in platform_browser:
browser = subprocess.Popen(platform_browser[platform_name])
else:
print(":-(")
Timer(1, open_browser).start() # delayed start, give e.g. your own web server time to launch
sleep(20) # start e.g. your python web server here instead
browser.kill()
You can have multiple CTE
s in one query, as well as reuse a CTE
:
WITH cte1 AS
(
SELECT 1 AS id
),
cte2 AS
(
SELECT 2 AS id
)
SELECT *
FROM cte1
UNION ALL
SELECT *
FROM cte2
UNION ALL
SELECT *
FROM cte1
Note, however, that SQL Server
may reevaluate the CTE
each time it is accessed, so if you are using values like RAND()
, NEWID()
etc., they may change between the CTE
calls.
I use helper class. Not sure it's good or bad
public class ListHelper<T> {
private final T[] t;
public ListHelper(T[] t) {
this.t = t;
}
public List<T> unique(List<T> list) {
Set<T> set = new HashSet<>(list);
return Arrays.asList(set.toArray(t));
}
}
Usage and test:
import static org.assertj.core.api.Assertions.assertThat;
public class ListHelperTest {
@Test
public void unique() {
List<String> s = Arrays.asList("abc", "cde", "dfg", "abc");
List<String> unique = new ListHelper<>(new String[0]).unique(s);
assertThat(unique).hasSize(3);
}
}
Or Java8 version:
public class ListHelper<T> {
public Function<List<T>, List<T>> unique() {
return l -> l.stream().distinct().collect(Collectors.toList());
}
}
public class ListHelperTest {
@Test
public void unique() {
List<String> s = Arrays.asList("abc", "cde", "dfg", "abc");
assertThat(new ListHelper<String>().unique().apply(s)).hasSize(3);
}
}
You can find the last column of table and then fill the cell by looping throught it.
Sub test()
Dim lastCol As Long, i As Integer
lastCol = Range("AZ1").End(xlToLeft).Column
For i = 1 To lastCol
Cells(1, i).Value = "PHEV"
Next
End Sub
Yes. But if you do add the code outside it most likely will not be the end of the world since most browsers will fix it, but it is still a bad practice to get into.
Setting timestamps to false means you are going to lose both created_at and updated_at whereas you could set both of the keys in your model.
Case 1:
You have created_at
column but not update_at you could simply set updated_at
to false in your model
class ABC extends Model {
const UPDATED_AT = null;
Case 2:
You have both created_at
and updated_at
columns but with different column names
You could simply do:
class ABC extends Model {
const CREATED_AT = 'name_of_created_at_column';
const UPDATED_AT = 'name_of_updated_at_column';
Finally ignoring timestamps completely:
class ABC extends Model {
public $timestamps = false;
If you want to plot a set of circles, you might want to see this post or this gist(a bit newer). The post offered a function named circles
.
The function circles
works like scatter
, but the sizes of plotted circles are in data unit.
Here's an example:
from pylab import *
figure(figsize=(8,8))
ax=subplot(aspect='equal')
#plot one circle (the biggest one on bottom-right)
circles(1, 0, 0.5, 'r', alpha=0.2, lw=5, edgecolor='b', transform=ax.transAxes)
#plot a set of circles (circles in diagonal)
a=arange(11)
out = circles(a, a, a*0.2, c=a, alpha=0.5, edgecolor='none')
colorbar(out)
xlim(0,10)
ylim(0,10)
Images can be placed in place of radio buttons by using label and span elements.
<div class="customize-radio">
<label>Favourite Smiley</label>
<br>
<label for="hahaha">
<input type="radio" name="smiley" id="hahaha">
<span class="haha-img"></span>
HAHAHA
</label>
<label for="kiss">
<input type="radio" name="smiley" id="kiss">
<span class="kiss-img"></span>
Kiss
</label>
<label for="tongueOut">
<input type="radio" name="smiley" id="tongueOut">
<span class="tongueout-img"></span>
TongueOut
</label>
</div>
Radio button should be hidden,
.customize-radio label > input[type = 'radio'] {
visibility: hidden;
position: absolute;
}
Image can be given in the span tag,
.customize-radio label > input[type = 'radio'] ~ span{
cursor: pointer;
width: 27px;
height: 24px;
display: inline-block;
background-size: 27px 24px;
background-repeat: no-repeat;
}
.haha-img {
background-image: url('hahabefore.png');
}
.kiss-img{
background-image: url('kissbefore.png');
}
.tongueout-img{
background-image: url('tongueoutbefore.png');
}
To change the image on click of radio button, add checked state to the input tag,
.customize-radio label > input[type = 'radio']:checked ~ span.haha-img{
background-image: url('haha.png');
}
.customize-radio label > input[type = 'radio']:checked ~ span.kiss-img{
background-image: url('kiss.png');
}
.customize-radio label > input[type = 'radio']:checked ~ span.tongueout-img{
background-image: url('tongueout.png');
}
If you have any queries, Refer to the following link, As I have taken solution from the below blog, http://frontendsupport.blogspot.com/2018/06/cool-radio-buttons-with-images.html
This should work:
$("#table-filters>ul>li.active").removeClass("active");
//Find all `li`s with class `active`, children of `ul`s, children of `table-filters`