I've used the following with jQuery UI Dialog. (Maybe it works with other ajax callbacks?)
$('<div><img src="/i/loading.gif" id="loading" /></div>').load('/ajax.html').dialog({
height: 300,
width: 600,
title: 'Wait for it...'
});
The contains an animated loading gif until its content is replaced when the ajax call completes.
Probably the shortest solution:
jQuery(document).ready(function(){
jQuery("#textArea").on("keydown keyup", function(){
this.style.height = "1px";
this.style.height = (this.scrollHeight) + "px";
});
});
This way you don't need any hidden divs or anything like that.
Note: you might have to play with this.style.height = (this.scrollHeight) + "px";
depending on how you style the textarea (line-height, padding and that kind of stuff).
Element.prototype.typeof = "element";_x000D_
var element = document.body; // any dom element_x000D_
if (element && element.typeof == "element"){_x000D_
return true; _x000D_
// this is a dom element_x000D_
}_x000D_
else{_x000D_
return false; _x000D_
// this isn't a dom element_x000D_
}
_x000D_
You have to first convert your object literal to a Prototype Hash:
// Store your object literal
var obj = {foo: 1, bar: 2, barobj: {75: true, 76: false, 85: true}}
// Iterate like so. The $H() construct creates a prototype-extended Hash.
$H(obj).each(function(pair){
alert(pair.key);
alert(pair.value);
});
Here is working code for me
I wanted to convert 'Text' string to HTML element
var diva = UWA.createElement('div');
diva.innerHTML = '<a href="http://wwww.example.com">Text</a>';
var aelement = diva.firstChild;
As an improvement to the accepted answer, in order to reduce nesting, you could do this instead, provided that the key is not inherited:
for (var key in dictionary) {
if (!dictionary.hasOwnProperty(key)) {
continue;
}
console.log(key, dictionary[key]);
}
Edit: info about Object.hasOwnProperty
here
Using Bootstrap 3.x using text-right
works perfectly:
<td class="text-right">
text aligned
</td>
You can use an Explain Plan to get an objective answer.
For your problem, an Exists filter would probably perform the fastest.
I will add that if you are using SELinux that you need to make sure the type context is tmp_t You can accomplish this by using the chcon utility
chcon -t tmp_t uploads
PHP is completely irrelevant for what you are doing. The generated HTML is what counts.
In your case, you are missing the src
attribute. Use
<script type="text/javascript" src="file.js"></script>
Nothing quite worked for me (I think it was because my input .mp4 video didn't had any audio) so I found this worked for me:
ffmpeg -i input_video.mp4 -i balipraiavid.wav -map 0:v:0 -map 1:a:0 output.mp4
Apart from the impossibility to get file system access in JS, I would not put any trust at all in a client-generated checksum. So generating the checksum on the server is mandatory in any case. – Tomalak Apr 20 '09 at 14:05
Which is useless in most cases. You want the MD5 computed at client side, so that you can compare it with the code recomputed at server side and conclude the upload went wrong if they differ. I have needed to do that in applications working with large files of scientific data, where receiving uncorrupted files were key. My cases was simple, cause users had the MD5 already computed from their data analysis tools, so I just needed to ask it to them with a text field.
nflog is better
sudo apt-get -y install ulogd2
ICMP Block rule example:
iptables=/sbin/iptables
# Drop ICMP (PING)
$iptables -t mangle -A PREROUTING -p icmp -j NFLOG --nflog-prefix 'ICMP Block'
$iptables -t mangle -A PREROUTING -p icmp -j DROP
And you can search prefix "ICMP Block" in log:
/var/log/ulog/syslogemu.log
Returning &iterator will return the address of the iterator. If you want to return a way of referring to the element return the iterator itself.
Beware that you do not need the vector to be a global in order to return the iterator/pointer, but that operations in the vector can invalidate the iterator. Adding elements to the vector, for example, can move the vector elements to a different position if the new size() is greater than the reserved memory. Deletion of an element before the given item from the vector will make the iterator refer to a different element.
In both cases, depending on the STL implementation it can be hard to debug with just random errors happening each so often.
EDIT after comment: 'yes, I didn't want to return the iterator a) because its const, and b) surely it is only a local, temporary iterator? – Krakkos'
Iterators are not more or less local or temporary than any other variable and they are copyable. You can return it and the compiler will make the copy for you as it will with the pointer.
Now with the const-ness. If the caller wants to perform modifications through the returned element (whether pointer or iterator) then you should use a non-const iterator. (Just remove the 'const_' from the definition of the iterator).
Let's first look at the definitions of these words before evaluating what the difference is in HTML:
English definition:
In HTML context:
When the browser parses the HTML, it creates a tree data structure wich basically is an in memory representation of the HTML. It the tree data structure contains nodes which are HTML elements and text. Attributes and properties relate to this is the following manner:
It is also important to realize that the mapping of these properties is not 1 to 1. In other words, not every attribute which we give on an HTML element will have a similar named DOM property.
Furthermore have different DOM elements different properties. For example, an <input>
element has a value property which is not present on a <div>
property.
Let's take the following HTML document:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"> <!-- charset is a attribute -->
<meta name="viewport" content="width=device-width"> <!-- name and content are attributes -->
<title>JS Bin</title>
</head>
<body>
<div id="foo" class="bar foobar">hi</div> <!-- id and class are attributes -->
</body>
</html>
Then we inspect the <div>
, in the JS console:
console.dir(document.getElementById('foo'));
We see the following DOM properties (chrome devtools, not all properties shown):
class
is reserved keyword in JS). But actually 2 properties, classList
and className
.Here's a extension method version that incorporates cancellation of the timeout when the original task completes as suggested by Andrew Arnott in a comment to his answer.
public static async Task<TResult> TimeoutAfter<TResult>(this Task<TResult> task, TimeSpan timeout) {
using (var timeoutCancellationTokenSource = new CancellationTokenSource()) {
var completedTask = await Task.WhenAny(task, Task.Delay(timeout, timeoutCancellationTokenSource.Token));
if (completedTask == task) {
timeoutCancellationTokenSource.Cancel();
return await task; // Very important in order to propagate exceptions
} else {
throw new TimeoutException("The operation has timed out.");
}
}
}
While the other answers have not worked for me in all situations, the best solution I could find (working with POST
as well), taken from here:
curl -vs 'https://some-site.com' 1> /dev/null
Underscore-java uses linkedhashmap to store key/value for json. I am the maintainer of the project.
Map<String, Object> myObject = new LinkedHashMap<>();
myObject.put("userid", "User 1");
myObject.put("amount", "24.23");
myObject.put("success", "NO");
System.out.println(U.toJson(myObject));
I use below sql to exclude the null string and empty string lines.
select * from table where length(nvl(column1,0))>0
Because, the length of empty string is 0.
select length('');
+-----------+--+
| length() |
+-----------+--+
| 0 |
+-----------+--+
maybe I'd go by this.
SQL = SELECT REPLACE(myColumn, '""', '\'') FROM myTable
I used singlequotes because that's the one that registers string expressions in MySQL, or so I believe.
Hope that helps.
Via composer installing specific version 7.*
composer create-project --prefer-dist laravel/laravel:^7.0 project_name
To install specific version 6.* and below use the following command:
composer create-project --prefer-dist laravel/laravel project_name "6.*"
I'd like to add this simple example when you have to use Object.assign.
class SomeClass {
constructor() {
this.someValue = 'some value';
}
someMethod() {
console.log('some action');
}
}
const objectAssign = Object.assign(new SomeClass(), {});
objectAssign.someValue; // ok
objectAssign.someMethod(); // ok
const spread = {...new SomeClass()};
spread.someValue; // ok
spread.someMethod(); // there is no methods of SomeClass!
It can be not clear when you use JavaScript. But with TypeScript it is easier if you want to create instance of some class
const spread: SomeClass = {...new SomeClass()} // Error
I had the same issue. It is solved when I made composer globally available. Now I am able to tun the commands from any where in the folder.
composer update
composer require "samplelibraryyouwant"
Node is missing from the SYSTEM PATH, try this in your command line
SET PATH=C:\Program Files\Nodejs;%PATH%
and then try running node
To set this system wide you need to set in the system settings - cf - http://banagale.com/changing-your-system-path-in-windows-vista.htm
To be very clean, create a new system variable NODEJS
NODEJS="C:\Program Files\Nodejs"
Then edit the PATH
in system variables and add %NODEJS%
PATH=%NODEJS%;...
Since 2017 and Symfony 3.3 you can register Repository as service, with all its advantages it has.
Check my post How to use Repository with Doctrine as Service in Symfony for more general description.
To your specific case, original code with tuning would look like this:
<?php
namespace Test\CommonBundle\Services;
use Doctrine\ORM\EntityManagerInterface;
class UserService
{
private $userRepository;
// use custom repository over direct use of EntityManager
// see step 2
public function __constructor(UserRepository $userRepository)
{
$this->userRepository = $userRepository;
}
public function getUser($userId)
{
return $this->userRepository->find($userId);
}
}
<?php
namespace Test\CommonBundle\Repository;
use Doctrine\ORM\EntityManagerInterface;
class UserRepository
{
private $repository;
public function __construct(EntityManagerInterface $entityManager)
{
$this->repository = $entityManager->getRepository(UserEntity::class);
}
public function find($userId)
{
return $this->repository->find($userId);
}
}
# app/config/services.yml
services:
_defaults:
autowire: true
Test\CommonBundle\:
resource: ../../Test/CommonBundle
Well, the shortest way I know of, is following:
psql -U {user_name} -d {database_name} -f {file_path} -h {host_name}
database_name: Which database should you insert your file data in.
file_path: Absolute path to the file through which you want to perform the importing.
host_name: The name of the host. For development purposes, it is mostly localhost
.
Upon entering this command in console, you will be prompted to enter your password.
Redirect 301 / https://example.com/
(worked for me when none of the above answers worked)
Bonus:
ServerAlias www.example.com example.com
(fixed https://www.example.com not found)
int value, *ptr;
value = 8;
ptr = &value;
// ptr points to value, which lives on a stack frame.
// you are not responsible for managing its lifetime.
ptr = new int;
delete ptr;
// yes this is the normal way to manage the lifetime of
// dynamically allocated memory, you new'ed it, you delete it.
ptr = nullptr;
delete ptr;
// this is illogical, essentially you are saying delete nothing.
<!-- change id attribute to name -->
<form method="post" action="yourUrl" name="theForm">
<button onclick="placeOrder()">Place Order</button>
</form>
function placeOrder () {
document.theForm.submit()
}
Add extra columns as null for the table having less columns like
Select Col1, Col2, Col3, Col4, Col5 from Table1
Union
Select Col1, Col2, Col3, Null as Col4, Null as Col5 from Table2
The selected answer doesn't work in Rails 3.1+ as the error handler was moved to a middleware (see github issue).
Here's the solution I found which I'm pretty happy with.
In ApplicationController
:
unless Rails.application.config.consider_all_requests_local
rescue_from Exception, with: :handle_exception
end
def not_found
raise ActionController::RoutingError.new('Not Found')
end
def handle_exception(exception=nil)
if exception
logger = Logger.new(STDOUT)
logger.debug "Exception Message: #{exception.message} \n"
logger.debug "Exception Class: #{exception.class} \n"
logger.debug "Exception Backtrace: \n"
logger.debug exception.backtrace.join("\n")
if [ActionController::RoutingError, ActionController::UnknownController, ActionController::UnknownAction].include?(exception.class)
return render_404
else
return render_500
end
end
end
def render_404
respond_to do |format|
format.html { render template: 'errors/not_found', layout: 'layouts/application', status: 404 }
format.all { render nothing: true, status: 404 }
end
end
def render_500
respond_to do |format|
format.html { render template: 'errors/internal_server_error', layout: 'layouts/application', status: 500 }
format.all { render nothing: true, status: 500}
end
end
and in application.rb
:
config.after_initialize do |app|
app.routes.append{ match '*a', :to => 'application#not_found' } unless config.consider_all_requests_local
end
And in my resources (show, edit, update, delete):
@resource = Resource.find(params[:id]) or not_found
This could certainly be improved, but at least, I have different views for not_found and internal_error without overriding core Rails functions.
If you are in the context of a Faraday request, you can also just pass the params hash as the second argument and faraday takes care of making proper param URL part out of it:
faraday_instance.get(url, params_hsh)
I combined it, and this is the results -
$(document).ready(function() {
$("#toTop").hide();
// fade in & out
$(window).scroll(function () {
if ($(this).scrollTop() > 400) {
$('#toTop').fadeIn();
} else {
$('#toTop').fadeOut();
}
});
$('a[href*=#]').each(function() {
if (location.pathname.replace(/^\//,'') == this.pathname.replace(/^\//,'')
&& location.hostname == this.hostname
&& this.hash.replace(/#/,'') ) {
var $targetId = $(this.hash), $targetAnchor = $('[name=' + this.hash.slice(1) +']');
var $target = $targetId.length ? $targetId : $targetAnchor.length ? $targetAnchor : false;
if ($target) {
var targetOffset = $target.offset().top;
$(this).click(function() {
$('html, body').animate({scrollTop: targetOffset}, 400);
return false;
});
}
}
});
});
I tested it and it works fine. hope this will help someone :)
You may see the same schematic explanations for both, but these are totally confusing.
For UNION:
For JOIN:
You can deserialize directly to a list by using the TypeReference
wrapper. An example method:
public static <T> T fromJSON(final TypeReference<T> type,
final String jsonPacket) {
T data = null;
try {
data = new ObjectMapper().readValue(jsonPacket, type);
} catch (Exception e) {
// Handle the problem
}
return data;
}
And is used thus:
final String json = "";
Set<POJO> properties = fromJSON(new TypeReference<Set<POJO>>() {}, json);
As a side note, the reason revoke usage on *.* from 'phpmyadmin'@'localhost';
does not work is quite simple : There is no grant called USAGE
.
The actual named grants are in the MySQL Documentation
The grant USAGE
is a logical grant. How? 'phpmyadmin'@'localhost' has an entry in mysql.user
where user='phpmyadmin' and host='localhost'. Any row in mysql.user semantically means USAGE
. Running DROP USER 'phpmyadmin'@'localhost';
should work just fine. Under the hood, it's really doing this:
DELETE FROM mysql.user WHERE user='phpmyadmin' and host='localhost';
DELETE FROM mysql.db WHERE user='phpmyadmin' and host='localhost';
FLUSH PRIVILEGES;
Therefore, the removal of a row from mysql.user
constitutes running REVOKE USAGE
, even though REVOKE USAGE
cannot literally be executed.
To add on to what Alisson said you could check to see if a row is returned.
// Query stuff ...
$query = $this->db->get();
if ($query->num_rows() > 0)
{
$row = $query->row();
return $row->campaign_id;
}
return null; // or whatever value you want to return for no rows found
You can easily convert the string data type to numerical data type.
Don't forget to change collectionName & FieldName. for ex : CollectionNmae : Users & FieldName : Contactno.
Try this query..
db.collectionName.find().forEach( function (x) {
x.FieldName = parseInt(x.FieldName);
db.collectionName.save(x);
});
if(!File.Exists(filename)) //No File? Create
{
fs = File.Create(filename);
fs.Close();
}
if(File.ReadAllBytes().Length >= 100*1024*1024) // (100mB) File to big? Create new
{
string filenamebase = "myLogFile"; //Insert the base form of the log file, the same as the 1st filename without .log at the end
if(filename.contains("-")) //Check if older log contained -x
{
int lognumber = Int32.Parse(filename.substring(filename.lastIndexOf("-")+1, filename.Length-4); //Get old number, Can cause exception if the last digits aren't numbers
lognumber++; //Increment lognumber by 1
filename = filenamebase + "-" + lognumber + ".log"; //Override filename
}
else
{
filename = filenamebase + "-1.log"; //Override filename
}
fs = File.Create(filename);
fs.Close();
}
Refer link:
http://www.codeproject.com/Questions/163337/How-to-write-in-log-Files-in-C
Put the table in a container element that has
overflow:scroll; max-width:95vw;
or make the table fit to the screen and overflow:scroll all table cells.
I'm quite a beginner in Python and I found the answer of Anand was very good but quite complicated to me, so I try to reformulate :
1) insert
and append
methods are not specific to sys.path
and as in other languages they add an item into a list or array and :
* append(item)
add item
to the end of the list,
* insert(n, item)
inserts the item
at the nth position in the list (0
at the beginning, 1
after the first element, etc ...).
2) As Anand said, python search the import files in each directory of the path in the order of the path, so :
* If you have no file name collisions, the order of the path has no impact,
* If you look after a function already defined in the path and you use append
to add your path, you will not get your function but the predefined one.
But I think that it is better to use append
and not insert
to not overload the standard behaviour of Python, and use non-ambiguous names for your files and methods.
In my case: spring boot 2 ,multiple datasource(default and custom). entityManager.createQuery
go wrong: 'entity is not mapped'
while debug, i find out that the entityManager's unitName is wrong(should be custom,but the fact is default) the right way:
@PersistenceContext(unitName = "customer1") // !important,
private EntityManager em;
the customer1
is from the second datasource config class:
@Bean(name = "customer1EntityManagerFactory")
public LocalContainerEntityManagerFactoryBean entityManagerFactory(EntityManagerFactoryBuilder builder,
@Qualifier("customer1DataSource") DataSource dataSource) {
return builder.dataSource(dataSource).packages("com.xxx.customer1Datasource.model")
.persistenceUnit("customer1")
// PersistenceUnit injects an EntityManagerFactory, and PersistenceContext
// injects an EntityManager.
// It's generally better to use PersistenceContext unless you really need to
// manage the EntityManager lifecycle manually.
// ?4?
.properties(jpaProperties.getHibernateProperties(new HibernateSettings())).build();
}
Then,the entityManager is right.
But, em.persist(entity) doesn't work,and the transaction doesn't work.
Another important point is:
@Transactional("customer1TransactionManager") // !important
public Trade findNewestByJdpModified() {
//test persist,working right!
Trade t = new Trade();
em.persist(t);
log.info("t.id" + t.getSysTradeId());
//test transactional, working right!
int a = 3/0;
}
customer1TransactionManager
is from the second datasource config class:
@Bean(name = "customer1TransactionManager")
public PlatformTransactionManager transactionManager(
@Qualifier("customer1EntityManagerFactory") EntityManagerFactory entityManagerFactory) {
return new JpaTransactionManager(entityManagerFactory);
}
The whole second datasource config class is :
package com.lichendt.shops.sync;
import javax.persistence.EntityManagerFactory;
import javax.sql.DataSource;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.autoconfigure.jdbc.DataSourceProperties;
import org.springframework.boot.autoconfigure.orm.jpa.HibernateSettings;
import org.springframework.boot.autoconfigure.orm.jpa.JpaProperties;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.orm.jpa.EntityManagerFactoryBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import org.springframework.orm.jpa.JpaTransactionManager;
import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;
@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(entityManagerFactoryRef = "customer1EntityManagerFactory", transactionManagerRef = "customer1TransactionManager",
// ?1??????DAO???? ,????DAO?? com.xx.DAO??,????? com.xx.DAO
basePackages = { "com.lichendt.customer1Datasource.dao" })
public class Custom1DBConfig {
@Autowired
private JpaProperties jpaProperties;
@Bean(name = "customer1DatasourceProperties")
@Qualifier("customer1DatasourceProperties")
@ConfigurationProperties(prefix = "customer1.datasource")
public DataSourceProperties customer1DataSourceProperties() {
return new DataSourceProperties();
}
@Bean(name = "customer1DataSource")
@Qualifier("customer1DatasourceProperties")
@ConfigurationProperties(prefix = "customer1.datasource") //
// ?2?datasource?????,???? ?mysql?yaml???
public DataSource dataSource() {
// return DataSourceBuilder.create().build();
return customer1DataSourceProperties().initializeDataSourceBuilder().build();
}
@Bean(name = "customer1EntityManagerFactory")
public LocalContainerEntityManagerFactoryBean entityManagerFactory(EntityManagerFactoryBuilder builder,
@Qualifier("customer1DataSource") DataSource dataSource) {
return builder.dataSource(dataSource).packages("com.lichendt.customer1Datasource.model") // ?3???????????
.persistenceUnit("customer1")
// PersistenceUnit injects an EntityManagerFactory, and PersistenceContext
// injects an EntityManager.
// It's generally better to use PersistenceContext unless you really need to
// manage the EntityManager lifecycle manually.
// ?4?
.properties(jpaProperties.getHibernateProperties(new HibernateSettings())).build();
}
@Bean(name = "customer1TransactionManager")
public PlatformTransactionManager transactionManager(
@Qualifier("customer1EntityManagerFactory") EntityManagerFactory entityManagerFactory) {
return new JpaTransactionManager(entityManagerFactory);
}
}
For SQL 2005,
EXEC sp_MSForEachTable 'TRUNCATE TABLE ?'
if array is look like this [null] or [null, null] or [null, null, null, ...]
you can use implode:
implode is use for convert array to string.
if(implode(null,$arr)==null){
//$arr is empty
}else{
//$arr has some value rather than null
}
I noticed there was not an actual full code answer, so as i come across this, i have created a function, that does change the font, which can be easily modified. I have tested this in
private void SetFont(Form f, string name, int size, FontStyle style)
{
Font replacementFont = new Font(name, size, style);
f.Font = replacementFont;
}
Hint: replace Form to either Label, RichTextBox, TextBox, or any other relative control that uses fonts to change the font on them. By using the above function thus making it completely dynamic.
/// To call the function do this.
/// e.g in the form load event etc.
public Form1()
{
InitializeComponent();
SetFont(this, "Arial", 8, FontStyle.Bold);
// This sets the whole form and
// everything below it.
// Shaun Cassidy.
}
You can also, if you want a full libary so you dont have to code all the back end bits, you can download my dll from Github.
/// and then import the namespace
using Droitech.TextFont;
/// Then call it using:
TextFontClass fClass = new TextFontClass();
fClass.SetFont(this, "Arial", 8, FontStyle.Bold);
Simple.
These answers are right, but old and works for Depoloyement Package Model
.
What I Actually needed is to change the server name, database name of a connection manager and i found this very helpful:
https://www.youtube.com/watch?v=_yLAwTHH_GA
Better for people using SQL Server 2012-2014-2016 ... with Deployment Project Model
<div id="load" style="display:none"><img src="ajax-loader.gif"/></div>
function getData(p){
var page=p;
document.getElementById("load").style.display = "block"; // show the loading message.
$.ajax({
url: "loadData.php?id=<? echo $id; ?>",
type: "POST",
cache: false,
data: "&page="+ page,
success : function(html){
$(".content").html(html);
document.getElementById("load").style.display = "none";
}
});
Thanks, finally got an solution to not put utf8::encode all over code. To synthesize and complete for other cases, like write and read files in utf8 and also works with LoadFile of an YAML file in utf8
use utf8;
use open ':encoding(utf8)';
binmode(STDOUT, ":utf8");
open(FH, ">test.txt");
print FH "something éá";
use YAML qw(LoadFile Dump);
my $PUBS = LoadFile("cache.yaml");
my $f = "2917";
my $ref = $PUBS->{$f};
print "$f \"".$ref->{name}."\" ". $ref->{primary_uri}." ";
where cache.yaml is:
---
2917:
id: 2917
name: Semanário
primary_uri: 2917.xml
Does document.getElementById("blue") exist? if it doesn't then blue_box will be equal to null. you can't set a onclick on something that's null
A 32 bit floating point number has 23 + 1 bits of mantissa and an 8 bit exponent (-126 to 127 is used though) so the largest number you can represent is:
(1 + 1 / 2 + ... 1 / (2 ^ 23)) * (2 ^ 127) =
(2 ^ 23 + 2 ^ 23 + .... 1) * (2 ^ (127 - 23)) =
(2 ^ 24 - 1) * (2 ^ 104) ~= 3.4e38
This was helpful for me, if you use the
var dir = Directory.GetCurrentDirectory()
the path fill be beyond the current folder, it will incluide this path \bin\debug What I recommend you, is that you can use the
string dir = Directory.GetParent(Directory.GetCurrentDirectory()).Parent.Parent.FullName
then print the dir value and verify the path is giving you
I get the same error on my JSP and the bad rated answer was correct
I had the folowing line:
<c:forEach var="agent" items=" ${userList}" varStatus="rowCounter">
and get the folowing error:
javax.el.PropertyNotFoundException: Property 'agent' not found on type java.lang.String
deleting the space before ${userList} solved my problem
If some have the same problem, he will find quickly this post and does not waste 3 days in googeling to find help.
INSERT INTO tab_student (name_student, id_teacher_fk)
VALUES ('dan red',
(SELECT id_teacher FROM tab_teacher WHERE name_teacher ='jason bourne')
it is advisable to store your values in lowercase to make retrieval easier and less error prone
INSERT INTO tab_teacher (name_teacher)
VALUES ('tom stills')
INSERT INTO tab_student (name_student, id_teacher_fk)
VALUES ('rich man', LAST_INSERT_ID())
here is the complete working code. As per your requirement. you can get all files and folders recursively.
var recur = function(dir) {
fs.readdir(dir,function(err,list){
list.forEach(function(file){
var file2 = path.resolve(dir, file);
fs.stat(file2,function(err,stats){
if(stats.isDirectory()) {
recur(file2);
}
else {
console.log(file2);
}
})
})
});
};
recur(path);
in path give your directory path in which you want to search like "c:\test"
try something like
background: url(bgimage.jpg) no-repeat;
background-size: 100%;
There exists a newer question what is hitting the problem better asking How do include paths work in Visual Studio?
There is getting revealed the way to do it in the newer versions of VisualStudio
The second is the what the answer of Steve Wilkinson above explains, what is, as he supposed himself, not the what Microsoft would recommend.
To say it the shortway here: do it, but do it in the User-Directory at
C:\Users\UserName\AppData\Local\Microsoft\MSBuild\v4.0
in the XML-file
Microsoft.Cpp.Win32.user.props
and/or
Microsoft.Cpp.x64.user.props
and not in the C:\program files - directory, where the unmodified Factory-File of Microsoft is expected to reside.
Then you do it the way as VisualStudio is doing it too and everything is regular.
For more info why to do it alike, see my answer there.
Bulk add new categories to Woo:
Insert category id, name, url key
INSERT INTO wp_terms
VALUES
(57, 'Apples', 'fruit-apples', '0'),
(58, 'Bananas', 'fruit-bananas', '0');
Set the term values as catergories
INSERT INTO wp_term_taxonomy
VALUES
(57, 57, 'product_cat', '', 17, 0),
(58, 58, 'product_cat', '', 17, 0)
17 - is parent category, if there is one
key here is to make sure the wp_term_taxonomy table term_taxonomy_id, term_id are equal to wp_term table's term_id
After doing the steps above go to wordpress admin and save any existing category. This will update the DB to include your bulk added categories
To get all divs under 'container', use the following:
$(".container>div") //or
$(".container").children("div");
You can stipulate a specific #id
instead of div
to get a particular one.
You say you want a div with an 'undefined' id. if I understand you right, the following would achieve this:
$(".container>div[id=]")
I believe you are looking for this:
string str = "{\"Arg1\":\"Arg1Value\",\"Arg2\":\"Arg2Value\"}";
JavaScriptSerializer serializer1 = new JavaScriptSerializer();
object obje = serializer1.Deserialize(str, obj1.GetType());
As nextXXX()
methods don't read newline
, except nextLine()
. We can skip the newline
after reading any non-string
value (int
in this case) by using scanner.skip()
as below:
Scanner sc = new Scanner(System.in);
int x = sc.nextInt();
sc.skip("(\r\n|[\n\r\u2028\u2029\u0085])?");
System.out.println(x);
double y = sc.nextDouble();
sc.skip("(\r\n|[\n\r\u2028\u2029\u0085])?");
System.out.println(y);
char z = sc.next().charAt(0);
sc.skip("(\r\n|[\n\r\u2028\u2029\u0085])?");
System.out.println(z);
String hello = sc.nextLine();
System.out.println(hello);
float tt = sc.nextFloat();
sc.skip("(\r\n|[\n\r\u2028\u2029\u0085])?");
System.out.println(tt);
One more simple variant which was not yet mentioned:
copy(A.begin(),A.end(),std::back_inserter(AB));
copy(B.begin(),B.end(),std::back_inserter(AB));
And using merge algorithm:
#include <algorithm>
#include <vector>
#include <iterator>
#include <iostream>
#include <sstream>
#include <string>
template<template<typename, typename...> class Container, class T>
std::string toString(const Container<T>& v)
{
std::stringstream ss;
std::copy(v.begin(), v.end(), std::ostream_iterator<T>(ss, ""));
return ss.str();
};
int main()
{
std::vector<int> A(10);
std::vector<int> B(5); //zero filled
std::vector<int> AB(15);
std::for_each(A.begin(), A.end(),
[](int& f)->void
{
f = rand() % 100;
});
std::cout << "before merge: " << toString(A) << "\n";
std::cout << "before merge: " << toString(B) << "\n";
merge(B.begin(),B.end(), begin(A), end(A), AB.begin(), [](int&,int&)->bool {});
std::cout << "after merge: " << toString(AB) << "\n";
return 1;
}
The short answer is "no, it is not possible to do that in a principled way that works even remotely well". It is an unsolved problem in natural language processing research and also happens to be the subject of my doctoral work. I'll very briefly summarize where we are and point you to a few publications:
Meaning of words
The most important assumption here is that it is possible to obtain a vector that represents each word in the sentence in quesion. This vector is usually chosen to capture the contexts the word can appear in. For example, if we only consider the three contexts "eat", "red" and "fluffy", the word "cat" might be represented as [98, 1, 87], because if you were to read a very very long piece of text (a few billion words is not uncommon by today's standard), the word "cat" would appear very often in the context of "fluffy" and "eat", but not that often in the context of "red". In the same way, "dog" might be represented as [87,2,34] and "umbrella" might be [1,13,0]. Imagening these vectors as points in 3D space, "cat" is clearly closer to "dog" than it is to "umbrella", therefore "cat" also means something more similar to "dog" than to an "umbrella".
This line of work has been investigated since the early 90s (e.g. this work by Greffenstette) and has yielded some surprisingly good results. For example, here is a few random entries in a thesaurus I built recently by having my computer read wikipedia:
theory -> analysis, concept, approach, idea, method
voice -> vocal, tone, sound, melody, singing
james -> william, john, thomas, robert, george, charles
These lists of similar words were obtained entirely without human intervention- you feed text in and come back a few hours later.
The problem with phrases
You might ask why we are not doing the same thing for longer phrases, such as "ginger foxes love fruit". It's because we do not have enough text. In order for us to reliably establish what X is similar to, we need to see many examples of X being used in context. When X is a single word like "voice", this is not too hard. However, as X gets longer, the chances of finding natural occurrences of X get exponentially slower. For comparison, Google has about 1B pages containing the word "fox" and not a single page containing "ginger foxes love fruit", despite the fact that it is a perfectly valid English sentence and we all understand what it means.
Composition
To tackle the problem of data sparsity, we want to perform composition, i.e. to take vectors for words, which are easy to obtain from real text, and to put the together in a way that captures their meaning. The bad news is nobody has been able to do that well so far.
The simplest and most obvious way is to add or multiply the individual word vectors together. This leads to undesirable side effect that "cats chase dogs" and "dogs chase cats" would mean the same to your system. Also, if you are multiplying, you have to be extra careful or every sentences will end up represented by [0,0,0,...,0], which defeats the point.
Further reading
I will not discuss the more sophisticated methods for composition that have been proposed so far. I suggest you read Katrin Erk's "Vector space models of word meaning and phrase meaning: a survey". This is a very good high-level survey to get you started. Unfortunately, is not freely available on the publisher's website, email the author directly to get a copy. In that paper you will find references to many more concrete methods. The more comprehensible ones are by Mitchel and Lapata (2008) and Baroni and Zamparelli (2010).
Edit after comment by @vpekar: The bottom line of this answer is to stress the fact that while naive methods do exist (e.g. addition, multiplication, surface similarity, etc), these are fundamentally flawed and in general one should not expect great performance from them.
I say you setup the JAVA_HOME
environment variable like Pascal is saying:
In Cygwin if you use bash as your shell should be:
export JAVA_HOME=/cygdrive/c/pathtothejdk
It never harms to also prepend the java bin
directory path to the PATH
environment variable with:
export PATH=${JAVA_HOME}/bin:${PATH}
Also add maven-enforce-plugin
to make sure the right JDK is used. This is a good practice for your pom.
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-enforcer-plugin</artifactId>
<executions>
<execution>
<id>enforce-versions</id>
<goals>
<goal>enforce</goal>
</goals>
<configuration>
<rules>
<requireJavaVersion>
<version>1.6</version>
</requireJavaVersion>
</rules>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
Please, see Maven Enforcer plugin – Usage.
This maybe not the answer to poster's question.But this may helpful to people whose face same situation with me:
The client have two network cards,a wireless one and a normal one.
The ping to server can be succeed.However telnet serverAddress 3306
would fail.
And would complain
Can't connect to MySQL server on 'xxx.xxx.xxx.xxx' (10060)
when try to connect to server.So I forbidden the normal network adapters.
And tried telnet serverAddress 3306
it works.And then it work when connect to MySQL server.
Whenever changes are made in dockerfile or compose or requirements , re-Run it using docker-compose up --build
. So that images get rebuild and refreshed
A large number of unwanted NUL characters, say one every other byte, indicates that the file is encoded in UTF-16 and that you should use iconv
to convert it to UTF-8.
try using the on error event of the client to find the issue.
var http = require('http');
var options = {
host: 'google.com',
path: '/'
}
var request = http.request(options, function (res) {
var data = '';
res.on('data', function (chunk) {
data += chunk;
});
res.on('end', function () {
console.log(data);
});
});
request.on('error', function (e) {
console.log(e.message);
});
request.end();
for (int i=0;i<=dtB.Columns.Count-1;i++)
{
array(0, i) = dtB.Compute("SUM([" & dtB.Columns(i).ColumnName & "])", "")
}
Using http.createServer
is very low-level and really not useful for creating web applications as-is.
A good framework to use on top of it is Express, and I would seriously suggest using it. You can install it using npm install express
.
When you have, you can create a basic application to handle your form:
var express = require('express');
var bodyParser = require('body-parser');
var app = express();
//Note that in version 4 of express, express.bodyParser() was
//deprecated in favor of a separate 'body-parser' module.
app.use(bodyParser.urlencoded({ extended: true }));
//app.use(express.bodyParser());
app.post('/myaction', function(req, res) {
res.send('You sent the name "' + req.body.name + '".');
});
app.listen(8080, function() {
console.log('Server running at http://127.0.0.1:8080/');
});
You can make your form point to it using:
<form action="http://127.0.0.1:8080/myaction" method="post">
The reason you can't run Node on port 80 is because there's already a process running on that port (which is serving your index.html
). You could use Express to also serve static content, like index.html
, using the express.static
middleware.
Extending PeterTheNiceGuy's answer a bit:
$.validator.addMethod(
"regex",
function(value, element, regexp) {
if (regexp.constructor != RegExp)
regexp = new RegExp(regexp);
else if (regexp.global)
regexp.lastIndex = 0;
return this.optional(element) || regexp.test(value);
},
"Please check your input."
);
This would allow you to pass a regex object to the rule.
$("Textbox").rules("add", { regex: /^[a-zA-Z'.\s]{1,40}$/ });
Resetting the lastIndex
property is necessary when the g
-flag is set on the RegExp
object. Otherwise it would start validating from the position of the last match with that regex, even if the subject string is different.
Some other ideas I had was be to enable you use arrays of regex's, and another rule for the negation of regex's:
$("password").rules("add", {
regex: [
/^[a-zA-Z'.\s]{8,40}$/,
/^.*[a-z].*$/,
/^.*[A-Z].*$/,
/^.*[0-9].*$/
],
'!regex': /password|123/
});
But implementing those would maybe be too much.
Historical Note: This was written at the time of PHP4. This is what we call "legacy code" now.
I have left this answer for historical purposes - but some of the methods are now deprecated, DES encryption method is not a recommended practice, etc.
I have not updated this code for two reasons: 1) I no longer work with encryption methods by hand in PHP, and 2) this code still serves the purpose it was intended for: to demonstrate the minimum, simplistic concept of how encryption can work in PHP.
If you find a similarly simplistic, "PHP encryption for dummies" kind of source that can get people started in 10-20 lines of code or less, let me know in comments.
Beyond that, please enjoy this Classic Episode of early-era PHP4 minimalistic encryption answer.
Ideally you have - or can get - access to the mcrypt PHP library, as its certainly popular and very useful a variety of tasks. Here's a run down of the different kinds of encryption and some example code: Encryption Techniques in PHP
//Listing 3: Encrypting Data Using the mcrypt_ecb Function
<?php
echo("<h3> Symmetric Encryption </h3>");
$key_value = "KEYVALUE";
$plain_text = "PLAINTEXT";
$encrypted_text = mcrypt_ecb(MCRYPT_DES, $key_value, $plain_text, MCRYPT_ENCRYPT);
echo ("<p><b> Text after encryption : </b>");
echo ( $encrypted_text );
$decrypted_text = mcrypt_ecb(MCRYPT_DES, $key_value, $encrypted_text, MCRYPT_DECRYPT);
echo ("<p><b> Text after decryption : </b>");
echo ( $decrypted_text );
?>
A few warnings:
1) Never use reversible, or "symmetric" encryption when a one-way hash will do.
2) If the data is truly sensitive, like credit card or social security numbers, stop; you need more than any simple chunk of code will provide, but rather you need a crypto library designed for this purpose and a significant amount of time to research the methods necessary. Further, the software crypto is probably <10% of security of sensitive data. It's like rewiring a nuclear power station - accept that the task is dangerous and difficult and beyond your knowledge if that's the case. The financial penalties can be immense, so better to use a service and ship responsibility to them.
3) Any sort of easily implementable encryption, as listed here, can reasonably protect mildly important information that you want to keep from prying eyes or limit exposure in the case of accidental/intentional leak. But seeing as how the key is stored in plain text on the web server, if they can get the data they can get the decryption key.
Be that as it may, have fun :)
I'm not sure about Linux, but try this for Windows:
#include <windows.h>
#include <iostream>
using namespace std ;
int main()
{
char ownPth[MAX_PATH];
// When NULL is passed to GetModuleHandle, the handle of the exe itself is returned
HMODULE hModule = GetModuleHandle(NULL);
if (hModule != NULL)
{
// Use GetModuleFileName() with module handle to get the path
GetModuleFileName(hModule, ownPth, (sizeof(ownPth)));
cout << ownPth << endl ;
system("PAUSE");
return 0;
}
else
{
cout << "Module handle is NULL" << endl ;
system("PAUSE");
return 0;
}
}
Binary floating-point numbers have interesting precision characteristics, since the value is stored as a binary integer raised to a binary power. When dealing with sub-integer values (that is, values between 0 and 1), negative powers of two "round off" very differently than negative powers of ten.
For example, the number 0.1 can be represented by 1 x 10-1, but there is no combination of base-2 exponent and mantissa that can precisely represent 0.1 -- the closest you get is 0.10000000000000001.
So if you have an application where you are working with values like 0.1 or 0.01 a great deal, but where small (less than 0.000000000000001%) errors cannot be tolerated, then binary floating-point numbers are not for you.
Conversely, if powers of ten are not "special" to your application (powers of ten are important in currency calculations, but not in, say, most applications of physics), then you are actually better off using binary floating-point, since it's usually at least an order of magnitude faster, and it is much more memory efficient.
The article from the Python documentation on floating point issues and limitations does an excellent job of explaining this issue in an easy to understand form. Wikipedia also has a good article on floating point that explains the math behind the representation.
Suppose we have a file as Message.cpp or a .c file
Steps 1: Preprocessing (Argument -E )
g++ -E .\Message.cpp > P1
P1 file generated has expanded macros and header file contents and comments are stripped off.
Step 2: Translate Preprocessed file to assembly (Argument -S). This task is done by compiler
g++ -S .\Message.cpp
An assembler (ASM) is generated (Message.s). It has all the assembly code.
Step 3: Translate assembly code to Object code. Note: Message.s was generated in Step2. g++ -c .\Message.s
An Object file with the name Message.o is generated. It is the binary form.
Step 4: Linking the object file. This task is done by linker
g++ .\Message.o -o MessageApp
An exe file MessageApp.exe is generated here.
#include <iostream>
using namespace std;
//This a sample program
int main()
{
cout << "Hello" << endl;
cout << PQR(P,K) ;
getchar();
return 0;
}
The PowerShell is almost exactly the same.
$webclient = new-object System.Net.WebClient
$webclient.Credentials = new-object System.Net.NetworkCredential($username, $password, $domain)
$webpage = $webclient.DownloadString($url)
you need the libblas and liblapack dev packages if you are using Ubuntu.
aptitude install libblas-dev liblapack-dev
pip install scipy
Why not just bypass the WebClient's file handling pieces altogether. Perhaps something similar to this:
private void webBrowser1_Navigating(object sender, WebBrowserNavigatingEventArgs e)
{
e.Cancel = true;
WebClient client = new WebClient();
client.DownloadDataCompleted += new DownloadDataCompletedEventHandler(client_DownloadDataCompleted);
client.DownloadDataAsync(e.Url);
}
void client_DownloadDataCompleted(object sender, DownloadDataCompletedEventArgs e)
{
string filepath = textBox1.Text;
File.WriteAllBytes(filepath, e.Result);
MessageBox.Show("File downloaded");
}
Use numpy.delete() - returns a new array with sub-arrays along an axis deleted
numpy.delete(a, index)
For your specific question:
import numpy as np
a = np.array([1, 2, 3, 4, 5, 6, 7, 8, 9])
index = [2, 3, 6]
new_a = np.delete(a, index)
print(new_a) #Prints `[1, 2, 5, 6, 8, 9]`
Note that numpy.delete()
returns a new array since array scalars are immutable, similar to strings in Python, so each time a change is made to it, a new object is created. I.e., to quote the delete()
docs:
"A copy of arr with the elements specified by obj removed. Note that delete does not occur in-place..."
If the code I post has output, it is the result of running the code.
With me, this problem in base Address in app.config of WCF service: When I've used:
<baseAddresses><add baseAddress="http://127.0.0.1:9022/Service/GatewayService"/> </baseAddresses>
it's ok if use .net to connect with public ip or domain.
But when use PHP's SoapClient to connect to "http://[online ip]:9022/Service/GatewayService
", it's throw exception "Coulod not connect to host"
I've changed baseAddress to [online ip]:9022 and everything's ok.
Used these lines:
AccountManager manager = AccountManager.get(this);
Account[] accounts = manager.getAccountsByType("com.google");
the length of array accounts is always 0.
Note that for "Untitled" editor ("Untitled-1
", "Untitled-2
"), you now can set the language in the settings.
The previous setting was:
"files.associations": {
"untitled-*": "javascript"
}
This will not always work anymore, because with VSCode 1.42 (Q1 2020) will change the title of those untitled editors.
The title will now be the first line of the document for the editor title, along the generic name as part of the description.
It won't start anymore with "untitled-
"
See "Untitled editor improvements"
Regarding the associated language for those "Untitled" editors:
By default, untitled files do not have a specific language mode configured.
VS Code has a setting,
files.defaultLanguage
, to configure a default language for untitled files.With this release, the setting can take a new value
{activeEditorLanguage}
that will dynamically use the language mode of the currently active editor instead of a fixed default.In addition, when you copy and paste text into an untitled editor, VS Code will now automatically change the language mode of the untitled editor if the text was copied from a VS Code editor:
And see workbench.editor.untitled.labelFormat
in VSCode 1.43.
For Power-Shell
./adb shell getprop | Select-String -Pattern '(model)|(version.sdk)|(manufacturer)|(platform)|(serialno)|(product.name)|(brand)'
For linux(burrowing asnwer from @0x8BADF00D)
adb shell getprop | grep "model\|version.sdk\|manufacturer\|hardware\|platform\|revision\|serialno\|product.name\|brand"
For single string find in power shell
./adb shell getprop | Select-String -Pattern 'model'
or
./adb shell getprop | Select-String -Pattern '(model)'
For multiple
./adb shell getprop | Select-String -Pattern '(a|b|c|d)'
Previously we stored DB user/pass in a configuration file, but have since hit paranoid mode -- adopting a policy of Defence in Depth.
If your application is compromised, the user will have read access to your configuration file and so there is potential for a cracker to read this information. Configuration files can also get caught up in version control, or copied around servers.
We have switched to storing user/pass in environment variables set in the Apache VirtualHost. This configuration is only readable by root -- hopefully your Apache user is not running as root.
The con with this is that now the password is in a Global PHP variable.
To mitigate this risk we have the following precautions:
phpinfo()
is disabled. PHPInfo is an easy target to get an overview of everything, including environment variables.When user press F5 although new request goes to web server and get a responce for the request as well. But when the responce header is Parsed it check the required information in browser cache. If the required information in cache has not expired then that information is restored from in cache itself.
When user click on CTRL-F5 even then new request goes to web server and get a responce. But this time when the responce header is Parsed it do not check any required information in cache, and bring all updated information form server only.
Valid hex colors can contain 0 to 9 and A to F so if we create a string with those characters and then shuffle it, we can grab the first 6 characters to create a random hex color code. An example is below!
code
echo '#' . substr(str_shuffle('ABCDEF0123456789'), 0, 6);
I tested this in a while loop and generated 10,000 unique colors.
code I used to generate 10,000 unique colors:
$colors = array();
while (true) {
$color = substr(str_shuffle('ABCDEF0123456789'), 0, 6);
$colors[$color] = '#' . $color;
if ( count($colors) == 10000 ) {
echo implode(PHP_EOL, $colors);
break;
}
}
Which gave me these random colors as the result.
outis pointed out that my first example couldn't generate hexadecimals such as '4488CC' so I created a function which would be able to generate hexadecimals like that.
code
function randomHex() {
$chars = 'ABCDEF0123456789';
$color = '#';
for ( $i = 0; $i < 6; $i++ ) {
$color .= $chars[rand(0, strlen($chars) - 1)];
}
return $color;
}
echo randomHex();
The second example would be better to use because it can return a lot more different results than the first example, but if you aren't going to generate a lot of color codes then the first example would work just fine.
import os
def count_files(in_directory):
joiner= (in_directory + os.path.sep).__add__
return sum(
os.path.isfile(filename)
for filename
in map(joiner, os.listdir(in_directory))
)
>>> count_files("/usr/lib")
1797
>>> len(os.listdir("/usr/lib"))
2049
If you need to get the count of the entire result set you can take following approach:
SELECT SQL_CALC_FOUND_ROWS * FROM table_name LIMIT 5;
SELECT FOUND_ROWS();
This isn't normally faster than using COUNT
albeit one might think the opposite is the case because it's doing the calculation internally and doesn't send the data back to the user thus the performance improvement is suspected.
Doing these two queries is good for pagination for getting totals but not particularly for using WHERE
clauses.
Yes, the space is usually encoded to "%20" though. Any parameters that pass to a URL should be encoded, simply for safety reasons.
try this
bool IsOpen = false;
foreach (Form f in Application.OpenForms)
{
if (f.Text == "Form2")
{
IsOpen = true;
f.Focus();
break;
}
}
if (IsOpen == false)
{
Form2 f2 = new Form2();
f2.MdiParent = this;
f2.Show();
}
To handle Android Volley Timeout you need to use RetryPolicy
RetryPolicy
is an interface where you need to implement your logic of how you want to retry a particular request when a timeout happens.
It deals with these three parameters
For ex. If RetryPolicy is created with these values
Timeout - 3000 ms, Num of Retry Attempts - 2, Back Off Multiplier - 2.0
Retry Attempt 1:
Retry Attempt 2:
So at the end of Retry Attempt 2 if still Socket Timeout happens Volley would throw a TimeoutError
in your UI Error response handler.
//Set a retry policy in case of SocketTimeout & ConnectionTimeout Exceptions.
//Volley does retry for you if you have specified the policy.
jsonObjRequest.setRetryPolicy(new DefaultRetryPolicy(5000,
DefaultRetryPolicy.DEFAULT_MAX_RETRIES,
DefaultRetryPolicy.DEFAULT_BACKOFF_MULT));
Most of these answers are now outdated, IE7 support is not an issue.
The best way to do this that supports IE11+ and all modern browsers is:
const $elem = $("#elem");
$elem[0].style.setProperty('width', '100px', 'important');
Or if you want, you can create a small jQuery plugin that does this.
This plugin closely matches jQuery's own css()
method in the parameters it supports:
/**
* Sets a CSS style on the selected element(s) with !important priority.
* This supports camelCased CSS style property names and calling with an object
* like the jQuery `css()` method.
* Unlike jQuery's css() this does NOT work as a getter.
*
* @param {string|Object<string, string>} name
* @param {string|undefined} value
*/
jQuery.fn.cssImportant = function(name, value) {
const $this = this;
const applyStyles = (n, v) => {
// Convert style name from camelCase to dashed-case.
const dashedName = n.replace(/(.)([A-Z])(.)/g, (str, m1, upper, m2) => {
return m1 + "-" + upper.toLowerCase() + m2;
});
// Loop over each element in the selector and set the styles.
$this.each(function(){
this.style.setProperty(dashedName, v, 'important');
});
};
// If called with the first parameter that is an object,
// Loop over the entries in the object and apply those styles.
if(jQuery.isPlainObject(name)){
for(const [n, v] of Object.entries(name)){
applyStyles(n, v);
}
} else {
// Otherwise called with style name and value.
applyStyles(name, value);
}
// This is required for making jQuery plugin calls chainable.
return $this;
};
// Call the new plugin:
$('#elem').cssImportant('height', '100px');
// Call with an object and camelCased style names:
$('#another').cssImportant({backgroundColor: 'salmon', display: 'block'});
// Call on multiple items:
$('.item, #foo, #bar').cssImportant('color', 'red');
@echo off
setlocal enableextensions disabledelayedexpansion
set "search=%1"
set "replace=%2"
set "textFile=Input.txt"
for /f "delims=" %%i in ('type "%textFile%" ^& break ^> "%textFile%" ') do (
set "line=%%i"
setlocal enabledelayedexpansion
>>"%textFile%" echo(!line:%search%=%replace%!
endlocal
)
for /f
will read all the data (generated by the type
comamnd) before starting to process it. In the subprocess started to execute the type
, we include a redirection overwritting the file (so it is emptied). Once the do
clause starts to execute (the content of the file is in memory to be processed) the output is appended to the file.
I would abuse the connect function in mongo cli mongo doc. so that means you can start one or more connection. if you want to copy customer collection from test to test2 in same server. first you start mongo shell
use test
var db2 = connect('localhost:27017/test2')
do a normal find and copy the first 20 record to test2.
db.customer.find().limit(20).forEach(function(p) { db2.customer.insert(p); });
or filter by some criteria
db.customer.find({"active": 1}).forEach(function(p) { db2.customer.insert(p); });
just change the localhost to IP or hostname to connect to remote server. I use this to copy test data to a test database for testing.
Make sure the project does not have any errors. Delete the project from workspace(make the workspace a different directory from the git folder) and import again.
Hi you can do it this way
temp = sp.coo_matrix((data, (row, col)), shape=(3, 59))
temp1 = temp.tocsr()
#Cosine similarity
row_sums = ((temp1.multiply(temp1)).sum(axis=1))
rows_sums_sqrt = np.array(np.sqrt(row_sums))[:,0]
row_indices, col_indices = temp1.nonzero()
temp1.data /= rows_sums_sqrt[row_indices]
temp2 = temp1.transpose()
temp3 = temp1*temp2
I ended up with two changes to the original reply.
document
. This makes it harder to filter only a some of the ajax requests. Soo...This is the code after these changes:
$(document)
.hide() // hide it initially
.ajaxSend(function(event, jqxhr, settings) {
if (settings.url !== "ajax/request.php") return;
$(".spinner").show();
})
.ajaxComplete(function(event, jqxhr, settings) {
if (settings.url !== "ajax/request.php") return;
$(".spinner").hide();
})
If, running an Oracle HotSpot JDK 1.7.x, on a Linux platform where your locale suggests UTF-8 (e.g. LANG=en_US.utf8
), if you don't set it on the command-line with -Dfile.encoding
, the JDK will default file.encoding
and the default Charset
like this:
System.out.println(String.format("file.encoding: %s", System.getProperty("file.encoding")));
System.out.println(String.format("defaultCharset: %s", Charset.defaultCharset().name()));
... yields:
file.encoding: UTF-8
defaultCharset: UTF-8
... suggesting the default is UTF-8
on such a platform.
Additionally, if java.nio.charset.Charset.defaultCharset()
finds file.encoding
not-set, it looks for java.nio.charset.Charset.forName("UTF-8")
, suggesting it prefers that string, although it is well-aliased, so "UTF8" will also work fine.
If you run the same program on the same platform with java -Dfile.encoding=UTF8
, without the hypen, it yields:
file.encoding: UTF8
defaultCharset: UTF-8
... noting that the default charset has been canonicalized from UTF8
to UTF-8
.
It is usually handled automatically.
If autodiscovery doesn't work. Edit the elastic search config file, by enabling unicast discovery
Node 1:
cluster.name: mycluster
node.name: "node1"
node.master: true
node.data: true
discovery.zen.ping.multicast.enabled: false
discovery.zen.ping.unicast.hosts: ["node1.example.com"]
Node 2:
cluster.name: mycluster
node.name: "node2"
node.master: false
node.data: true
discovery.zen.ping.multicast.enabled: false
discovery.zen.ping.unicast.hosts: ["node1.example.com"]
and so on for node 3,4,5. Make node 1 master, and the rest only as data nodes.
Edit: Please note that by ES rule, if you have N
nodes, then by convention, N/2+1
nodes should be masters for fail-over mechanisms They may or may not be data nodes, though.
Also, in case auto-discovery doesn't work, most probable reason is because the network doesn't allow it (and therefore disabled). If too many auto-discovery pings take place across multiple servers, the resources to manage those pings will prevent other services from running correctly.
For ex, think of a 10,000 node cluster and all 10,000 nodes doing the auto-pings.
Use a value filter. Click the dropdown arrow next to your Row Labels and you'll see a choice between Sort A to Z, Label Filters, and Value Filters. Selecting a Greater Than value filter will let you choose which column to use to filter out rows, even if that column has no dropdown arrow itself.
The parameter ui
has a property called selected
which is a reference to the selected dom element, you can call innerHTML
on that element.
Your code $('.ui-selected').innerHTML
tries to return the innerHTML
property of a jQuery wrapper element for a dom element with class ui-selected
$(function () {
$("#select-image").selectable({
selected: function (event, ui) {
var $variable = ui.selected.innerHTML; // or $(ui.selected).html()
console.log($variable);
}
});
});
Demo: Fiddle
Try this test:
any(substring in string for substring in substring_list)
It will return True
if any of the substrings in substring_list
is contained in string
.
Note that there is a Python analogue of Marc Gravell's answer in the linked question:
from itertools import imap
any(imap(string.__contains__, substring_list))
In Python 3, you can use map
directly instead:
any(map(string.__contains__, substring_list))
Probably the above version using a generator expression is more clear though.
CSS does not have this ability. You would need to use client-side scripting.
I found the example RichardTheKiwi quite informative.
Just to offer another approach if you're looking for something like IF EXISTS (SELECT 1 ..) THEN ...
-- what I might write in MSSQL
IF EXISTS (SELECT 1 FROM Table WHERE FieldValue='')
BEGIN
SELECT TableID FROM Table WHERE FieldValue=''
END
ELSE
BEGIN
INSERT INTO TABLE(FieldValue) VALUES('')
SELECT SCOPE_IDENTITY() AS TableID
END
-- rewritten for MySQL
IF (SELECT 1 = 1 FROM Table WHERE FieldValue='') THEN
BEGIN
SELECT TableID FROM Table WHERE FieldValue='';
END;
ELSE
BEGIN
INSERT INTO Table (FieldValue) VALUES('');
SELECT LAST_INSERT_ID() AS TableID;
END;
END IF;
My solution to do this:
li span.show::after{
content: url("/sites/default/files/new5.gif");
padding-left: 5px;
}
Although this has an accepted answer, it is not going to effectively work in all cases. For example, I test date validation on a form field I have using the date "10/38/2013", and I got a valid DateObject returned, but the date was what PHP call "overflowed", so that "10/38/2013" becomes "11/07/2013". Makes sense, but should we just accept the reformed date, or force users to input the correct date? For those of us who are form validation nazis, We can use this dirty fix: https://stackoverflow.com/a/10120725/486863 and just return false when the object throws this warning.
The other workaround would be to match the string date to the formatted one, and compare the two for equal value. This seems just as messy. Oh well. Such is the nature of PHP dev.
Generally, Postman used for debugging and used in the development phase. But in case you want to block it even from postman try this.
const referrer_domain = "[enter-the-domain-name-of-the-referrer]"
//check for the referrer domain
app.all('/*', function(req, res, next) {
if(req.headers.referer.indexOf(referrer_domain) == -1){
res.send('Invalid Request')
}
next();
});
@echo off
set startbuild=%TIME%
C:\WINDOWS\Microsoft.NET\Framework\v3.5\msbuild.exe c:\link.xml /flp1:logfile=c:\link\errors.log;errorsonly /flp2:logfile=c:\link\warnings.log;warningsonly || goto :error
copy c:\app_offline.htm "\\lawpccnweb01\d$\websites\OperationsLinkWeb\app_offline.htm"
del \\lawpccnweb01\d$\websites\OperationsLinkWeb\bin\ /Q
echo Start Copy: %TIME%
set copystart=%TIME%
xcopy C:\link\_PublishedWebsites\OperationsLink \\lawpccnweb01\d$\websites\OperationsLinkWeb\ /s /y /d
del \\lawpccnweb01\d$\websites\OperationsLinkWeb\app_offline.htm
echo Started Build: %startbuild%
echo Started Copy: %copystart%
echo Finished Copy: %TIME%
c:\link\warnings.log
:error
c:\link\errors.log
In SQL Server you can turn on and off identity insert like this:
SET IDENTITY_INSERT table_name ON
-- run your queries here
SET IDENTITY_INSERT table_name OFF
I think you can use mysql_ping() function.
This function checks for connection to the server alive or not. if it fails then you can reconnect and proceed with your query.
I am getting similar errors recently because recent JDKs (and browsers, and the Linux TLS stack, etc.) refuse to communicate with some servers in my customer's corporate network. The reason of this is that some servers in this network still have SHA-1 certificates.
Please see: https://www.entrust.com/understanding-sha-1-vulnerabilities-ssl-longer-secure/ https://blog.qualys.com/ssllabs/2014/09/09/sha1-deprecation-what-you-need-to-know
If this would be your current case (recent JDK vs deprecated certificate encription) then your best move is to update your network to the proper encription technology.
In case that you should provide a temporal solution for that, please see another answers to have an idea about how to make your JDK trust or distrust certain encription algorithms:
How to force java server to accept only tls 1.2 and reject tls 1.0 and tls 1.1 connections
Anyway I insist that, in case that I have guessed properly your problem, this is not a good solution to the problem and that your network admin should consider removing these deprecated certificates and get a new one.
If your context is an activity you can call overridePendingTransition:
Call immediately after one of the flavors of startActivity(Intent) or finish to specify an explicit transition animation to perform next.
So, programmatically:
this.startActivity(new Intent(v.getContext(), newactivity.class));
this.overridePendingTransition(0, 0);
You can use:
CREATE LOGIN <login name> WITH PASSWORD = '<password>' ; GO
To create the login (See here for more details).
Then you may need to use:
CREATE USER user_name
To create the user associated with the login for the specific database you want to grant them access too.
(See here for details)
You can also use:
GRANT permission [ ,...n ] ON SCHEMA :: schema_name
To set up the permissions for the schema's that you assigned the users to.
(See here for details)
Two other commands you might find useful are ALTER USER and ALTER LOGIN.
If you don't want to use the @Test(priority = )
option in TestNG, you can make use of the javaassist library and TestNG's IMethodInterceptor
to prioritize the tests according to the order by which the test methods are defined in the test class. This is based on the solution provided here.
Add this listener to your test class:
package cs.jacob.listeners;
import java.util.Arrays;
import java.util.Comparator;
import java.util.List;
import javassist.ClassPool;
import javassist.CtClass;
import javassist.CtMethod;
import javassist.NotFoundException;
import org.testng.IMethodInstance;
import org.testng.IMethodInterceptor;
import org.testng.ITestContext;
public class PriorityInterceptor implements IMethodInterceptor {
public List<IMethodInstance> intercept(List<IMethodInstance> methods, ITestContext context) {
Comparator<IMethodInstance> comparator = new Comparator<IMethodInstance>() {
private int getLineNo(IMethodInstance mi) {
int result = 0;
String methodName = mi.getMethod().getConstructorOrMethod().getMethod().getName();
String className = mi.getMethod().getConstructorOrMethod().getDeclaringClass().getCanonicalName();
ClassPool pool = ClassPool.getDefault();
try {
CtClass cc = pool.get(className);
CtMethod ctMethod = cc.getDeclaredMethod(methodName);
result = ctMethod.getMethodInfo().getLineNumber(0);
} catch (NotFoundException e) {
e.printStackTrace();
}
return result;
}
public int compare(IMethodInstance m1, IMethodInstance m2) {
return getLineNo(m1) - getLineNo(m2);
}
};
IMethodInstance[] array = methods.toArray(new IMethodInstance[methods.size()]);
Arrays.sort(array, comparator);
return Arrays.asList(array);
}
}
This basically finds out the line numbers of the methods and sorts them by ascending order of their line number, i.e. the order by which they are defined in the class.
if (s.compareTo(t) > 0)
will compare string s to string t and return the int value you want.
public int Compare(Object obj) // creating a method to compare {
Student s = (Student) obj; //creating a student object
// compare last names
return this.lastName.compareTo(s.getLastName());
}
Now just test for a positive negative return from the method as you would have normally.
Cheers
awk 'NF' filename
awk 'NF > 0' filename
sed -i '/^$/d' filename
awk '!/^$/' filename
awk '/./' filename
The NF also removes lines containing only blanks or tabs, the regex /^$/
does not.
I don't like setting CLASSPATH. CLASSPATH is a global variable and as such it is evil:
Therefore the preferred way is to set the classpath per each run of the jvm, for example:
java -Xmx500m -cp ".:../somejar.jar:../mysql-connector-java-5.1.6-bin.jar" "folder.subfolder../dit1/some.xml
If it gets long the standard procedure is to wrap it in a bash or batch script to save typing.
For methods: (I am not sure if this exactly what you want)
print_thrice.py
def private(method):
def methodist(string):
if __name__ == "__main__":
method(string)
return methodist
@private
def private_print3(string):
print(string * 3)
private_print3("Hello ") # output: Hello Hello Hello
other_file.py
from print_thrice import private_print3
private_print3("Hello From Another File? ") # no output
This is probably not a perfect solution, as you can still "see" and/or "call" the method. Regardless, it doesn't execute.
My take to keep Redux from referencing to the same variable of the initial state:
// write the default state as a function
const defaultOptionsState = () => ({
option1: '',
option2: 42,
});
const initialState = {
options: defaultOptionsState() // invoke it in your initial state
};
export default (state = initialState, action) => {
switch (action.type) {
case RESET_OPTIONS:
return {
...state,
options: defaultOptionsState() // invoke the default function to reset this part of the state
};
default:
return state;
}
};
The main reason it is useful in industry is the plug-ins built on top of the core functionality. Almost all active Matlab development for the last few years has focused on these.
Unfortunately, you won't have much opportunity to use these in an academic environment.
Try using the simple http.get(options, callback)
function in node.js:
var http = require('http');
var options = {
host: 'www.google.com',
path: '/index.html'
};
var req = http.get(options, function(res) {
console.log('STATUS: ' + res.statusCode);
console.log('HEADERS: ' + JSON.stringify(res.headers));
// Buffer the body entirely for processing as a whole.
var bodyChunks = [];
res.on('data', function(chunk) {
// You can process streamed parts here...
bodyChunks.push(chunk);
}).on('end', function() {
var body = Buffer.concat(bodyChunks);
console.log('BODY: ' + body);
// ...and/or process the entire body here.
})
});
req.on('error', function(e) {
console.log('ERROR: ' + e.message);
});
There is also a general http.request(options, callback)
function which allows you to specify the request method and other request details.
Possible Duplicate:
Just Additional Info which took me long time to find.what if you were using the field name and not id for identifying the form field. You do it like this:
For radio button:
var inp= $('input:radio[name=PatientPreviouslyReceivedDrug]:checked').val();
For textbox:
var txt=$('input:text[name=DrugDurationLength]').val();
I ended up with the following:
set input=AAA BBB CCC DDD EEE FFF
set nth=4
for /F "tokens=%nth% delims= " %%a in ("%input%") do set nthstring=%%a
echo %nthstring%
With this you can parameterize the input and index. Make sure to put this code in a bat file.
Thanks for the input guys, I was able to find the fix, I added and defined the json on top of the app.component.ts file:
var json = require('./[yourFileNameHere].json');
This ultimately produced the markers and is a simple line of code.
I second bigvax comment earlier but you need to make sure that you add
jQuery("#jQueryUIAccordion").({ active: false,
collapsible: true });
otherwise you wont be able to open the first accordion after collapsing them.
$('.close').click(function () {
$('.ui-accordion-header').removeClass('ui-accordion-header-active ui-state-active ui-corner-top').addClass('ui-corner-all').attr({'aria-selected':'false','tabindex':'-1'});
$('.ui-accordion-header .ui-icon').removeClass('ui-icon-triangle-1-s').addClass('ui-icon-triangle-1-e');
$('.ui-accordion-content').removeClass('ui-accordion-content-active').attr({'aria-expanded':'false','aria-hidden':'true'}).hide();
}
for(n in 1:5) {
if(n==3) next # skip 3rd iteration and go to next iteration
cat(n)
}
To convert the object to a byte array use the concept of Serialization and De-serialization
.
The complete conversion from object to byte array explained in is tutorial.
Q. How can we convert object into byte array?
Q. How can we serialize a object?
Q. How can we De-serialize a object?
Q. What is the need of serialization and de-serialization?
You could use preg_replace to swap out all non-numeric characters and the comma and period/full stop as follows:
$testString = '12.322,11T';
echo preg_replace('/[^0-9,.]+/', '', $testString);
The pattern can also be expressed as /[^\d,.]+/
Another way. Will preserve keys as well.
function array_unique_multidimensional($input)
{
$serialized = array_map('serialize', $input);
$unique = array_unique($serialized);
return array_intersect_key($input, $unique);
}
For those we need the Swift version of the answer of @Jeff Thompson:
// Get a current time for where you want to start measuring from
var date = NSDate()
// do work...
// Find elapsed time and convert to milliseconds
// Use (-) modifier to conversion since receiver is earlier than now
var timePassed_ms: Double = date.timeIntervalSinceNow * -1000.0
I hope this help you.
How about the JDK source code?
Since this page is the number 1 result for the google search "c++ floating point exception", I want to add another thing that can cause such a problem: use of undefined variables.
Splice and Slice are built-in Javascript commands -- not specifically AngularJS commands. Slice returns array elements from the "start" up until just before the "end" specifiers. Splice mutates the actual array, and starts at the "start" and keeps the number of elements specified. Google has plenty of info on this, just search.
You can also just send the user name by writing:
curl -u USERNAME http://server.example
Curl will then ask you for the password, and the password will not be visible on the screen (or if you need to copy/paste the command).
I also had the same problem in IntellijIdea, after selecting the project, then File > ProjectStructure > ProjectSettings > Modules -> sources the option was showing - the Language Level set at 9:
So, I Just change it to 8. Still my issue didn't got resolve.
The main issue was with pom.xml. I reimported the pom.xml file and my issue got resolved.
So, whenever you changed the pom.xml file, IDEA needs to update the project structure. For example if you've added there some more dependencies, IDEA needs to add them as project libraries.
In "Settings > Build, Execution, Deployment > Build Tools > Maven > Importing" you can choose "Import Maven projects automatically". This will automatically invoke "Reimport" action when the pom.xml is changed.
If you grep
the command that you are looking for with a pipe from ps aux, it will wrap the text automatically. I used a lot of the other answers on here, but sometimes if you are looking for something specific, it is nice to just use grep
and you know that it will wrap lines.
For instance ps aux | grep ffmpeg
.
Try to convert the value first (eg: 64M -> 64 * 1024 * 1024). After that, do comparison and print the result.
<?php
$memory_limit = ini_get('memory_limit');
if (preg_match('/^(\d+)(.)$/', $memory_limit, $matches)) {
if ($matches[2] == 'M') {
$memory_limit = $matches[1] * 1024 * 1024; // nnnM -> nnn MB
} else if ($matches[2] == 'K') {
$memory_limit = $matches[1] * 1024; // nnnK -> nnn KB
}
}
$ok = ($memory_limit >= 64 * 1024 * 1024); // at least 64M?
echo '<phpmem>';
echo '<val>' . $memory_limit . '</val>';
echo '<ok>' . ($ok ? 1 : 0) . '</ok>';
echo '</phpmem>';
Please note that the above code is just an idea. Don't forget to handle -1 (no memory limit), integer-only value (value in bytes), G (value in gigabytes), k/m/g (value in kilobytes, megabytes, gigabytes because shorthand is case-insensitive), etc.
A much more simple solution (thanks to http://daniel.fone.net.nz/blog/2014/12/01/fixing-connection-errors-after-upgrading-postgres/) . I had upgraded to postgres 9.4. In my case, all I needed to do (after a day of googling and not succeeding)
gem uninstall pg
gem uninstall activerecord-postgresql-adapter
bundle install
Restart webrick, and done!
Run git add
first.
I just discovered that if your uncommitted changes are added to the index (i.e. "staged", using git add ...
), then git stash apply
(and, presumably, git stash pop
) will actually do a proper merge. If there are no conflicts, you're golden. If not, resolve them as usual with git mergetool
, or manually with an editor.
To be clear, this is the process I'm talking about:
mkdir test-repo && cd test-repo && git init
echo test > test.txt
git add test.txt && git commit -m "Initial version"
# here's the interesting part:
# make a local change and stash it:
echo test2 > test.txt
git stash
# make a different local change:
echo test3 > test.txt
# try to apply the previous changes:
git stash apply
# git complains "Cannot apply to a dirty working tree, please stage your changes"
# add "test3" changes to the index, then re-try the stash:
git add test.txt
git stash apply
# git says: "Auto-merging test.txt"
# git says: "CONFLICT (content): Merge conflict in test.txt"
... which is probably what you're looking for.
You can use the simple not flag to validate that. Example
if !@objectname
This will return true if @objectname is nil. You should not use dot operator or a nil value, else it will throw
*** NoMethodError Exception: undefined method `isNil?' for nil:NilClass
An ideal nil check would be like:
!@objectname || @objectname.nil? || @objectname.empty?
With the Material Components library you can use the CircularProgressIndicator
:
Something like:
<com.google.android.material.progressindicator.CircularProgressIndicator
android:indeterminate="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:indicatorColor="@array/progress_colors"
app:indicatorSize="xxdp"
app:showAnimationBehavior="inward"/>
where array/progress_colors
is an array with the colors:
<integer-array name="progress_colors">
<item>@color/yellow_500</item>
<item>@color/blue_700</item>
<item>@color/red_500</item>
</integer-array>
Note: it requires at least the version 1.3.0
There is an android.location.Location.distanceBetween()
method which does this quite well.
This way you can create Observable from data, in my case I need to maintain shopping cart:
service.ts
export class OrderService {
cartItems: BehaviorSubject<Array<any>> = new BehaviorSubject([]);
cartItems$ = this.cartItems.asObservable();
// I need to maintain cart, so add items in cart
addCartData(data) {
const currentValue = this.cartItems.value; // get current items in cart
const updatedValue = [...currentValue, data]; // push new item in cart
if(updatedValue.length) {
this.cartItems.next(updatedValue); // notify to all subscribers
}
}
}
Component.ts
export class CartViewComponent implements OnInit {
cartProductList: any = [];
constructor(
private order: OrderService
) { }
ngOnInit() {
this.order.cartItems$.subscribe(items => {
this.cartProductList = items;
});
}
}
Using header file stdio.h
you can easily do it as usual like c. before using %.2lf(set a specific number after % specifier.) using printf().
It simply printf specific digits after decimal point.
#include <stdio.h>
#include <iostream>
using namespace std;
int main()
{
double total=100;
printf("%.2lf",total);//this prints 100.00 like as C
}
This example shows how to you promises instead of callback.
Model.destroy({
where: {
id: 123 //this will be your id that you want to delete
}
}).then(function(rowDeleted){ // rowDeleted will return number of rows deleted
if(rowDeleted === 1){
console.log('Deleted successfully');
}
}, function(err){
console.log(err);
});
Check this link out for more info http://docs.sequelizejs.com/en/latest/api/model/#destroyoptions-promiseinteger
Regarding the internal structure of a Python long, check sys.int_info (or sys.long_info for Python 2.7).
>>> import sys
>>> sys.int_info
sys.int_info(bits_per_digit=30, sizeof_digit=4)
Python either stores 30 bits into 4 bytes (most 64-bit systems) or 15 bits into 2 bytes (most 32-bit systems). Comparing the actual memory usage with calculated values, I get
>>> import math, sys
>>> a=0
>>> sys.getsizeof(a)
24
>>> a=2**100
>>> sys.getsizeof(a)
40
>>> a=2**1000
>>> sys.getsizeof(a)
160
>>> 24+4*math.ceil(100/30)
40
>>> 24+4*math.ceil(1000/30)
160
There are 24 bytes of overhead for 0 since no bits are stored. The memory requirements for larger values matches the calculated values.
If your numbers are so large that you are concerned about the 6.25% unused bits, you should probably look at the gmpy2 library. The internal representation uses all available bits and computations are significantly faster for large values (say, greater than 100 digits).
managed to fix this by copying the below folder from another Visual Studio setup (non-express)
from C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\atlmfc
to C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\atlmfc
I suggest to read this since I believe that is what are you looking for.https://en.wikipedia.org/wiki/Erase%E2%80%93remove_idiom
If you use for example
vec.erase(vec.begin() + 1, vec.begin() + 3);
you will erase n -th element of vector but when you erase second element, all other elements of vector will be shifted and vector sized will be -1. This can be problem if you loop through vector since vector size() is decreasing. If you have problem like this provided link suggested to use existing algorithm in standard C++ library. and "remove" or "remove_if".
Hope that this helped
In matrix multiplication there are 3 for loop, we are using since execution of each for loop requires time complexity O(n)
. So for three loops it becomes O(n^3)
The jsqrcode library by Lazarsoft is now working perfectly using just HTML5, i.e. getUserMedia
(WebRTC). You can find it on GitHub.
I also found a great fork which is much simplified. Just one file (plus jQuery) and one call of a method: see html5-qrcode on GitHub.
There is a bug https://bugs.php.net/bug.php?id=61045 in php-fpm from v5.3.9 and till now (5.3.14 and 5.4.4). Developer promised fix will go live in next release. If you don't want to wait - use patch on that page and re-build or rollback to 5.3.8.
Just remove the backdrop, insert this code in your css file
.modal-backdrop {
/* bug fix - no overlay */
display: none;
}
As the error message says, you have an inline style, which CSP prohibits. I see at least one (list-style: none
) in your HTML. Put that style in your CSS file instead.
To explain further, Content Security Policy does not allow inline CSS because it could be dangerous. From An Introduction to Content Security Policy:
"If an attacker can inject a script tag that directly contains some malicious payload .. the browser has no mechanism by which to distinguish it from a legitimate inline script tag. CSP solves this problem by banning inline script entirely: it’s the only way to be sure."
This is round robin DNS. This is a quite simple solution for load balancing. Usually DNS servers rotate/shuffle the DNS records for each incoming DNS request. Unfortunately it's not a real solution for fail-over. If one of the servers fail, some visitors will still be directed to this failed server.
Analogous to @Resh32, but without the need to use the USE
statement:
SELECT TABLE_NAME,
COLUMN_NAME,
CONSTRAINT_NAME,
REFERENCED_TABLE_NAME,
REFERENCED_COLUMN_NAME
FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE
WHERE TABLE_SCHEMA = "database_name"
AND TABLE_NAME = "table_name"
AND REFERENCED_COLUMN_NAME IS NOT NULL;
Useful, e.g. using the ORM.
As mentioned, one way is to use
new Integer(my_int_value)
But you should not call the constructor for wrapper classes directly
So, modify the code accordingly:
mBitmapCache.put(Integer.valueOf(R.drawable.bg1),object);
An alternative for multiline texts or links, you can wrap your texts in a span inside a block element.
<a href="#">
<span>insert multiline texts here</span>
</a>
then you can just add border-bottom and padding on the <span>
.
a {
width: 300px;
display: block;
}
span {
padding-bottom: 10px;
border-bottom: 1px solid #0099d3;
line-height: 48px;
}
You may refer to this fiddle. https://jsfiddle.net/Aishaterr/vrpb2ey7/2/
You can use this JavaScript\jQuery
code:
// Sets active link in Bootstrap menu
// Add this code in a central place used\shared by all pages
// like your _Layout.cshtml in ASP.NET MVC for example
$('a[href="' + this.location.pathname + '"]').parents('li,ul').addClass('active');
It'll set the <a>
's parent <li>
and the <li>
's parent <ul>
as active.
A simple solution that works!
Original source:
I agree with the current answers, but in my case it does not work, I hope this code help someone in the future:
// check
$('#checkbox_id').click()
Use the clip property along with opacity, z-index, absolute positioning, and some browser filters to place the file input over the desired button:
http://en.wikibooks.org/wiki/Cascading_Style_Sheets/Clipping
To list all of the screen sessions for a user, run the following command as that user:
screen -ls
To see all screen sessions on a specific machine you can do:
ls -laR /var/run/screen/
I get this on my machine:
gentle ~ # ls -laR /var/run/screen/
/var/run/screen/:
total 1
drwxrwxr-x 4 root utmp 96 Mar 1 2005 .
drwxr-xr-x 10 root root 840 Feb 1 03:10 ..
drwx------ 2 josh users 88 Jan 13 11:33 S-josh
drwx------ 2 root root 48 Feb 11 10:50 S-root
/var/run/screen/S-josh:
total 0
drwx------ 2 josh users 88 Jan 13 11:33 .
drwxrwxr-x 4 root utmp 96 Mar 1 2005 ..
prwx------ 1 josh users 0 Feb 11 10:41 12931.pts-0.gentle
/var/run/screen/S-root:
total 0
drwx------ 2 root root 48 Feb 11 10:50 .
drwxrwxr-x 4 root utmp 96 Mar 1 2005 ..
This is a rather brilliantly Unixy use of Unix Sockets wrapped in filesystem permissions to handle security, state, and streams.
Very simple.
Rename your json file to ".js" instead ".json".
<script type="text/javascript" src="my_json.js"></script>
So follow your code normally.
<script type="text/javascript">
var obj = JSON.parse(contacts);
However, just for information, the content my json it's looks like the snip below.
contacts='[{"name":"bla bla", "email":bla bla, "address":"bla bla"}]';
If there is nothing to lose you could also just delete your fork just go to settings... go to danger zone section below and click delete repository. It will ask you to input the repository name and your password after. After that you just fork the original again.
In order to use import { readFileSync } from 'fs'
, you have to:
--experimental-modules
flag (in Node.js 10), e.g. node --experimental-modules server.mjs
(see #3 for explanation of .mjs)import
statements, to .mjs
, .js will not work, e.g. server.mjsThe other answers hit on 1 and 2, but 3 is also necessary. Also, note that this feature is considered extremely experimental at this point (1/10 stability) and not recommended for production, but I will still probably use it.
Here's the Node.js 10 ESM documentation.
Is there a way to get a list of all the keys in a Go language map?
ks := reflect.ValueOf(m).MapKeys()
how do I iterate over all the keys?
Use the accepted answer:
for k, _ := range m { ... }
There is several escaping options with same result:
body { width: ~"calc(100% - 250px - 1.5em)"; }
body { width: calc(~"100% - 250px - 1.5em"); }
body { width: calc(100% ~"-" 250px ~"-" 1.5em); }
It's odd how many incorrect answers has been given to asynchronous case! It can be simply shown that checking index does not provide expected behavior:
// INCORRECT
var list = [4000, 2000];
list.forEach(function(l, index) {
console.log(l + ' started ...');
setTimeout(function() {
console.log(index + ': ' + l);
}, l);
});
output:
4000 started
2000 started
1: 2000
0: 4000
If we check for index === array.length - 1
, callback will be called upon completion of first iteration, whilst first element is still pending!
To solve this problem without using external libraries such as async, I think your best bet is to save length of list and decrement if after each iteration. Since there's just one thread we're sure there no chance of race condition.
var list = [4000, 2000];
var counter = list.length;
list.forEach(function(l, index) {
console.log(l + ' started ...');
setTimeout(function() {
console.log(index + ': ' + l);
counter -= 1;
if ( counter === 0)
// call your callback here
}, l);
});
Referring to Gamaliel 's answer: $args is an array of the arguments that are passed into a script at runtime - as such cannot be used the way Gamaliel is using it. This is actually working:
$myPath = 'C:\whatever.file'
# get actual Acl entry
$myAcl = Get-Acl "$myPath"
$myAclEntry = "Domain\User","FullControl","Allow"
$myAccessRule = New-Object System.Security.AccessControl.FileSystemAccessRule($myAclEntry)
# prepare new Acl
$myAcl.SetAccessRule($myAccessRule)
$myAcl | Set-Acl "$MyPath"
# check if added entry present
Get-Acl "$myPath" | fl
I had the same problem and I am using iPython. pip or conda by itself did not work for me but when I use !conda it did work.
!conda install seaborn
This works perfectly for me, not matter how the date was coded previously.
library(lubridate)
data$created_date1 <- mdy_hm(data$created_at)
data$created_date1 <- as.Date(data$created_date1)
I was asked to do so without using any inbuilt function. So I wrote three functions for these tasks. Here is the code-
def string_to_list(string):
'''function takes actual string and put each word of string in a list'''
list_ = []
x = 0 #Here x tracks the starting of word while y look after the end of word.
for y in range(len(string)):
if string[y]==" ":
list_.append(string[x:y])
x = y+1
elif y==len(string)-1:
list_.append(string[x:y+1])
return list_
def list_to_reverse(list_):
'''Function takes the list of words and reverses that list'''
reversed_list = []
for element in list_[::-1]:
reversed_list.append(element)
return reversed_list
def list_to_string(list_):
'''This function takes the list and put all the elements of the list to a string with
space as a separator'''
final_string = str()
for element in list_:
final_string += str(element) + " "
return final_string
#Output
text = "I love India"
list_ = string_to_list(text)
reverse_list = list_to_reverse(list_)
final_string = list_to_string(reverse_list)
print("Input is - {}; Output is - {}".format(text, final_string))
#op= Input is - I love India; Output is - India love I
Please remember, This is one of a simpler solution. This can be optimized so try that. Thank you!
If you want to use enhanced loop, you can convert the string to charArray
for (char ch : exampleString.toCharArray()) {
System.out.println(ch);
}
Apparently - as I recently learned - this is the fastest way to do it:
var objs = {...};
var objKeys = Object.keys(obj);
for (var i = 0, objLen = objKeys.length; i < objLen; i++) {
// do whatever in here
var obj = objs[objKeys[i]];
}
This two annotation below is equal, "hasRole" will auto add prefix "ROLE_". Make sure you have the right annotation. This role is set in UserDetailsService#loadUserByUsername.
@PreAuthorize("hasAuthority('ROLE_user')")
@PreAuthorize("hasRole('user')")
then, you can get the role in java code.
Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
if(authentication.getAuthorities().contains(new SimpleGrantedAuthority("ROLE_user"))){
System.out.println("user role2");
}
This is a FAQ:
//someName[3]
means: all someName
elements in the document, that are the third someName
child of their parent -- there may be many such elements.
What you want is exactly the 3rd someName
element:
(//someName)[3]
Explanation: the []
has a higher precedence (priority) than //
. Remember always to put expressions of the type //someName
in brackets when you need to specify the Nth node of their selected node-list.
I do recommend you to change the configuration of JDK used by NetBeans in netbeans.conf
config file:
netbeans_jdkhome="C:\Program Files\Java\..."
My way it works for me
String str = "select os.name from os where os.idos="+nameid; try {
PreparedStatement stmt = conn.prepareStatement(str);
ResultSet rs = stmt.executeQuery();
if (rs.next()) {
a = rs.getString("os.n1ame");//<<<----Here is the ERROR
}
stmt.close();
} catch (SQLException e) {
System.out.println("error line : " + e.getStackTrace()[2].getLineNumber());
return a;
}
The icon file is added to your project as a content file.
I was getting this problem intermittently, where most of the time it would not give the error message. The solution for me was to configure LDAP correctly after my LDAP server's IP address had changed.
The /etc/gitlab/gitlab.rb
configuration for LDAP was pointing to a non-existent IP address, and so changing the host to point to the proper hostname for the LDAP server fixed the issue.
To diagnose the issue, use the gitlab-ctl tail
command to help you find stacktraces. For me, I found this stacktrace:
==> /var/log/gitlab/gitlab-rails/production.log <==
Net::LDAP::Error (No route to host - connect(2) for 10.10.10.12:389):
/opt/gitlab/embedded/lib/ruby/gems/2.3.0/gems/net-ldap-0.16.0/lib/net/ldap/connection.rb:72:in `open_connection'
...
Make the changes to the host value in /etc/gitlab/gitlab.rb
gitlab_rails['ldap_servers'] = YAML.load <<-'EOS'
main:
label: 'My LDAP'
# this was an IP address
# host: '10.10.10.12'
host: 'internal-ldap-server' # this is the fix
port: 389
After changing the config file above, be sure to reconfigure gitlab
gitlab-ctl reconfigure
I use this:
function fnIsAppleMobile()
{
if (navigator && navigator.userAgent && navigator.userAgent != null)
{
var strUserAgent = navigator.userAgent.toLowerCase();
var arrMatches = strUserAgent.match(/(iphone|ipod|ipad)/);
if (arrMatches != null)
return true;
} // End if (navigator && navigator.userAgent)
return false;
} // End Function fnIsAppleMobile
var bIsAppleMobile = fnIsAppleMobile(); // TODO: Write complaint to CrApple asking them why they don't update SquirrelFish with bugfixes, then remove
You are using:
expect(fn).toThrow(e)
But if you'll have a look on the function comment (expected is string):
294 /**
295 * Matcher that checks that the expected exception was thrown by the actual.
296 *
297 * @param {String} expected
298 */
299 jasmine.Matchers.prototype.toThrow = function(expected) {
I suppose you should probably write it like this (using lambda - anonymous function):
expect(function() { parser.parse(raw); } ).toThrow("Parsing is not possible");
This is confirmed in the following example:
expect(function () {throw new Error("Parsing is not possible")}).toThrow("Parsing is not possible");
Douglas Crockford strongly recommends this approach, instead of using "throw new Error()" (prototyping way):
throw {
name: "Error",
message: "Parsing is not possible"
}
The calculation occurs immediately since the calculation call is bound in the template, which displays its result when quantity
changes.
Instead you could try the following approach. Change your markup to the following:
<div ng-controller="myAppController" style="text-align:center">
<p style="font-size:28px;">Enter Quantity:
<input type="text" ng-model="quantity"/>
</p>
<button ng-click="calculateQuantity()">Calculate</button>
<h2>Total Cost: Rs.{{quantityResult}}</h2>
</div>
Next, update your controller:
myAppModule.controller('myAppController', function($scope,calculateService) {
$scope.quantity=1;
$scope.quantityResult = 0;
$scope.calculateQuantity = function() {
$scope.quantityResult = calculateService.calculate($scope.quantity, 10);
};
});
Here's a JSBin example that demonstrates the above approach.
The problem with this approach is the calculated result remains visible with the old value till the button is clicked. To address this, you could hide the result whenever the quantity
changes.
This would involve updating the template to add an ng-change
on the input, and an ng-if
on the result:
<input type="text" ng-change="hideQuantityResult()" ng-model="quantity"/>
and
<h2 ng-if="showQuantityResult">Total Cost: Rs.{{quantityResult}}</h2>
In the controller add:
$scope.showQuantityResult = false;
$scope.calculateQuantity = function() {
$scope.quantityResult = calculateService.calculate($scope.quantity, 10);
$scope.showQuantityResult = true;
};
$scope.hideQuantityResult = function() {
$scope.showQuantityResult = false;
};
These updates can be seen in this JSBin demo.
I can resolve this problem using the following code using Bootstrap 4:
<table class="table">
<tbody>
<tr class="d-flex">
<th class="col-3" scope="row">Indicador:</th>
<td class="col-9">this is my indicator</td>
</tr>
<tr class="d-flex">
<th class="col-3" scope="row">Definición:</th>
<td class="col-9">This is my definition</td>
</tr>
</tbody>
</table>
You have a bad table design. You can't autoincrement a string, that doesn't make any sense. You have basically two options:
1.) change type of ID to int
instead of string
2.) not recommended!!! - handle autoincrement by yourself. You first need to get the latest value from the database, parse it to the integer, increment it and attach it to the entity as a string again. VERY BAD idea
First option requires to change every table that has a reference to this table, BUT it's worth it.
How about achieving this using only HTML attribute 'disabled'
<form>
<fieldset disabled>
<div class="row">
<input type="text" placeholder="">
<textarea></textarea>
<select></select>
</div>
<div class="pull-right">
<button class="button-primary btn-sm" type="submit">Submit</button>
</div>
</fieldset>
</form>
Just by putting disabled in the fieldset all the fields inside of that fieldset get disabled.
$('fieldset').attr('disabled', 'disabled');
There is also the MATLAB Engine for Python by MathWorks itself. If you have MATLAB, this might be worth considering (I haven't tried it myself but it has a lot more functionality than just reading MATLAB files). However, I don't know if it is allowed to distribute it to other users (it is probably not a problem if those persons have MATLAB. Otherwise, maybe NumPy is the right way to go?).
Also, if you want to do all the basics yourself, MathWorks provides (if the link changes, try to google for matfile_format.pdf
or its title MAT-FILE Format
) a detailed documentation on the structure of the file format. It's not as complicated as I personally thought, but obviously, this is not the easiest way to go. It also depends on how many features of the .mat
-files you want to support.
I've written a "small" (about 700 lines) Python script which can read some basic .mat
-files. I'm neither a Python expert nor a beginner and it took me about two days to write it (using the MathWorks documentation linked above). I've learned a lot of new stuff and it was quite fun (most of the time). As I've written the Python script at work, I'm afraid I cannot publish it... But I can give some advice here:
.mat
-file you want to parse.miCOMPRESSED
, miMATRIX
, mxDOUBLE
, or miINT32
).mat
-files' structure is optimal for saving the data elements in a tree data structure; each node has one class and subnodesYou will need to create a virtual device that runs on ARM. Virtual devices running on X86 require an Intel processor. AMD support as specified by Android is only available for Linux systems. If you want a better experience when creating your Virtual Device, use "Store a snapshot for faster startup" instead of the default "Use Host GPU".
I know its already answered, still i am just trying to make it simple. So angular.copy(data) you can use in case where you want to modify/change your received object by keeping its original values unmodified/unchanged.
For example: suppose i have made api call and got my originalObj, now i want to change the values of api originalObj for some case but i want the original values too so what i can do is, i can make a copy of my api originalObj in duplicateObj and modify duplicateObj this way my originalObj values will not change. In simple words duplicateObj modification will not reflect in originalObj unlike how js obj behave.
$scope.originalObj={
fname:'sudarshan',
country:'India'
}
$scope.duplicateObj=angular.copy($scope.originalObj);
console.log('----------originalObj--------------');
console.log($scope.originalObj);
console.log('-----------duplicateObj---------------');
console.log($scope.duplicateObj);
$scope.duplicateObj.fname='SUD';
$scope.duplicateObj.country='USA';
console.log('---------After update-------')
console.log('----------originalObj--------------');
console.log($scope.originalObj);
console.log('-----------duplicateObj---------------');
console.log($scope.duplicateObj);
Result is like....
----------originalObj--------------
manageProfileController.js:1183 {fname: "sudarshan", country: "India"}
manageProfileController.js:1184 -----------duplicateObj---------------
manageProfileController.js:1185 {fname: "sudarshan", country: "India"}
manageProfileController.js:1189 ---------After update-------
manageProfileController.js:1190 ----------originalObj--------------
manageProfileController.js:1191 {fname: "sudarshan", country: "India"}
manageProfileController.js:1192 -----------duplicateObj---------------
manageProfileController.js:1193 {fname: "SUD", country: "USA"}
demo: http://so.devilmaycode.it/jquery-convert-line-breaks-to-br-nl2br-equivalent
function nl2br (str, is_xhtml) {
var breakTag = (is_xhtml || typeof is_xhtml === 'undefined') ? '<br />' : '<br>';
return (str + '').replace(/([^>\r\n]?)(\r\n|\n\r|\r|\n)/g, '$1'+ breakTag +'$2');
}
I know this is old, but I wanted to add a solution I don't see that I came up with myself. Found this question while on hunt of a different solution and just figured, "Well, while I'm here."
First of all, Neal's answer is good and great to use after you run your loop, however, I'd prefer do all work at once. Of course, in my specific case I had to do more work than this simple example here, but the method still applies. I saw where a couple others suggested foreach
loops, however, this still leaves you with after work due to the nature of the beast. Normally I suggest simpler things like foreach
, however, in this case, it's best to remember good old fashioned for loop
logic. Simply use i
! To maintain appropriate index, just subtract from i
after each removal of an Array item.
Here's my simple, working example:
$array = array(1,2,3,4,5);
for ($i = 0; $i < count($array); $i++) {
if($array[$i] == 1 || $array[$i] == 2) {
array_splice($array, $i, 1);
$i--;
}
}
Will output:
array(3) {
[0]=> int(3)
[1]=> int(4)
[2]=> int(5)
}
This can have many simple implementations. For example, my exact case required holding of latest item in array based on multidimensional values. I'll show you what I mean:
$files = array(
array(
'name' => 'example.zip',
'size' => '100000000',
'type' => 'application/x-zip-compressed',
'url' => '28188b90db990f5c5f75eb960a643b96/example.zip',
'deleteUrl' => 'server/php/?file=example.zip',
'deleteType' => 'DELETE'
),
array(
'name' => 'example.zip',
'size' => '10726556',
'type' => 'application/x-zip-compressed',
'url' => '28188b90db990f5c5f75eb960a643b96/example.zip',
'deleteUrl' => 'server/php/?file=example.zip',
'deleteType' => 'DELETE'
),
array(
'name' => 'example.zip',
'size' => '110726556',
'type' => 'application/x-zip-compressed',
'deleteUrl' => 'server/php/?file=example.zip',
'deleteType' => 'DELETE'
),
array(
'name' => 'example2.zip',
'size' => '12356556',
'type' => 'application/x-zip-compressed',
'url' => '28188b90db990f5c5f75eb960a643b96/example2.zip',
'deleteUrl' => 'server/php/?file=example2.zip',
'deleteType' => 'DELETE'
)
);
for ($i = 0; $i < count($files); $i++) {
if ($i > 0) {
if (is_array($files[$i-1])) {
if (!key_exists('name', array_diff($files[$i], $files[$i-1]))) {
if (!key_exists('url', $files[$i]) && key_exists('url', $files[$i-1])) $files[$i]['url'] = $files[$i-1]['url'];
$i--;
array_splice($files, $i, 1);
}
}
}
}
Will output:
array(1) {
[0]=> array(6) {
["name"]=> string(11) "example.zip"
["size"]=> string(9) "110726556"
["type"]=> string(28) "application/x-zip-compressed"
["deleteUrl"]=> string(28) "server/php/?file=example.zip"
["deleteType"]=> string(6) "DELETE"
["url"]=> string(44) "28188b90db990f5c5f75eb960a643b96/example.zip"
}
[1]=> array(6) {
["name"]=> string(11) "example2.zip"
["size"]=> string(9) "12356556"
["type"]=> string(28) "application/x-zip-compressed"
["deleteUrl"]=> string(28) "server/php/?file=example2.zip"
["deleteType"]=> string(6) "DELETE"
["url"]=> string(45) "28188b90db990f5c5f75eb960a643b96/example2.zip"
}
}
As you see, I manipulate $i before the splice as I'm seeking to remove the previous, rather than the present item.
You are missing a semicolon at the end of your 'struct' definition.
Also,
*sotrudnik
needs to be
sotrudnik*
Thank you php-b-grader. I improved the code, it is not necessary to use window.open(), the target is already specified in the form.
// Create a form
var mapForm = document.createElement("form");
mapForm.target = "_blank";
mapForm.method = "POST";
mapForm.action = "abmCatalogs.ftl";
// Create an input
var mapInput = document.createElement("input");
mapInput.type = "text";
mapInput.name = "variable";
mapInput.value = "lalalalala";
// Add the input to the form
mapForm.appendChild(mapInput);
// Add the form to dom
document.body.appendChild(mapForm);
// Just submit
mapForm.submit();
for target options --> w3schools - Target
You're almost there. Simply use:
//form[@id='myform']//input[@type='submit']
The //
shortcut can also be used inside an expression.
try this
SimpleDateFormat dateFormat = new SimpleDateFormat("dd-MM-yyyy HH:mm:ss");
String string = dateFormat.format(new Date());
System.out.println(string);
you can create any format see this
Its .net Version mismatch of the dll so try changing to from in app.config or web.config. Generally have a higher Framework than lower because when we add system's dll to the lower version built .net application so it won't work therefore just change to the higher version
While making such conversions one should take into consideration the behavior of timezones while converting from one object to the other. I found some good notes and examples in this stackoverflow post.
You can also use starts_with
and dplyr
's select()
like so:
df <- df %>% dplyr:: select(starts_with("ABC"))
You cannot assign an rvalue to an rvalue.
if (strcmp("hello", "hello") = 0)
is wrong. Suggestions:
if (strcmp("hello", "hello") == 0)
^
=
is the assign operator.
==
is the equal to operator.
I know many new programmers are confused with this fact.
I haven't done this, so I'm just going to point at the right answer.
C has provisions for functions that take unspecified numbers of operands, using the <stdarg.h>
header. You can define your function as void log_out(const char *fmt, ...);
, and get the va_list
inside the function. Then you can allocate memory and call vsprintf()
with the allocated memory, format, and va_list
.
Alternately, you could use this to write a function analogous to sprintf()
that would allocate memory and return the formatted string, generating it more or less as above. It would be a memory leak, but if you're just logging out it may not matter.