"Starting with version 6.7, Connector/Net will no longer include the MySQL for Visual Studio integration. That functionality is now available in a separate product called MySQL for Visual Studio available using the MySQL Installer for Windows."
Source: http://dev.mysql.com/downloads/connector/net/6.6.html
Another feature:
instead of of server.xml, you can add "Resource" tag in
your_application/META-INF/Context.xml
(according to tomcat docs)
like this:
<Context>
<Resource name="jdbc/DatabaseName" auth="Container" type="javax.sql.DataSource"
username="dbUsername" password="dbPasswd"
url="jdbc:postgresql://localhost/dbname"
driverClassName="org.postgresql.Driver"
initialSize="5" maxWait="5000"
maxActive="120" maxIdle="5"
validationQuery="select 1"
poolPreparedStatements="true"/>
</Context>
For unbound cases note that:
DataGridView.Rows.Clear()
leaves the Columns collection in place.
DataGridView.Columns.Clear()
..will remove all the columns and rows. If you are using the DGV unbound, and on next use the columns change, clearing the Rows may not be adequate. For library code clear all the columns before adding columns.
I got a similar error, which was resolved by installing the corresponding MySQL drivers from:
http://www.connectionstrings.com/mysql-connector-odbc-5-2/info-and-download/
and by performing the following steps:
Reference:
http://www.codeproject.com/Tips/305249/ERROR-IM-Microsoft-ODBC-Driver-Manager-Data-sou
You can use a list for the second generic type. For example a dictionary of strings keyed by a string:
Dictionary<string, List<string>> myDict;
DataSource is vendor-specific, for MySql you could use MysqlDataSource which is provided in the MySql Java connector jar:
MysqlDataSource dataSource = new MysqlDataSource();
dataSource.setDatabaseName("xyz");
dataSource.setUser("xyz");
dataSource.setPassword("xyz");
dataSource.setServerName("xyz.yourdomain.com");
In my case the Data provider entry for MySQL was "simply" missing in the machine.config file described above (though I had installed the MySQL connector properly)
<add name="MySQL Data Provider" invariant="MySql.Data.MySqlClient" description=".Net Framework Data Provider for MySQL" type="MySql.Data.MySqlClient.MySqlClientFactory, MySql.Data, Version=6.5.4.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d" />
Don't forget to put the right Version of your MySQL on the Entry
Just Try to do like this....
SortedDictionary<string, int> userCache = UserCache.getSortedUserValueCache();
// Add this code
if(userCache != null)
{
userListComboBox.DataSource = new BindingSource(userCache, null); // Key => null
userListComboBox.DisplayMember = "Key";
userListComboBox.ValueMember = "Value";
}
Here is the Complete solution
#First Datasource (DB1)
db1.datasource.url: url
db1.datasource.username:user
db1.datasource.password:password
#Second Datasource (DB2)
db2.datasource.url:url
db2.datasource.username:user
db2.datasource.password:password
Since we are going to get access two different databases (db1, db2), we need to configure each data source configuration separately like:
public class DB1_DataSource {
@Autowired
private Environment env;
@Bean
@Primary
public LocalContainerEntityManagerFactoryBean db1EntityManager() {
LocalContainerEntityManagerFactoryBean em = new LocalContainerEntityManagerFactoryBean();
em.setDataSource(db1Datasource());
em.setPersistenceUnitName("db1EntityManager");
HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
em.setJpaVendorAdapter(vendorAdapter);
HashMap<string, object=""> properties = new HashMap<>();
properties.put("hibernate.dialect",
env.getProperty("hibernate.dialect"));
properties.put("hibernate.show-sql",
env.getProperty("jdbc.show-sql"));
em.setJpaPropertyMap(properties);
return em;
}
@Primary
@Bean
public DataSource db1Datasource() {
DriverManagerDataSource dataSource
= new DriverManagerDataSource();
dataSource.setDriverClassName(
env.getProperty("jdbc.driver-class-name"));
dataSource.setUrl(env.getProperty("db1.datasource.url"));
dataSource.setUsername(env.getProperty("db1.datasource.username"));
dataSource.setPassword(env.getProperty("db1.datasource.password"));
return dataSource;
}
@Primary
@Bean
public PlatformTransactionManager db1TransactionManager() {
JpaTransactionManager transactionManager
= new JpaTransactionManager();
transactionManager.setEntityManagerFactory(
db1EntityManager().getObject());
return transactionManager;
}
}
Second Datasource :
public class DB2_DataSource {
@Autowired
private Environment env;
@Bean
public LocalContainerEntityManagerFactoryBean db2EntityManager() {
LocalContainerEntityManagerFactoryBean em
= new LocalContainerEntityManagerFactoryBean();
em.setDataSource(db2Datasource());
em.setPersistenceUnitName("db2EntityManager");
HibernateJpaVendorAdapter vendorAdapter
= new HibernateJpaVendorAdapter();
em.setJpaVendorAdapter(vendorAdapter);
HashMap<string, object=""> properties = new HashMap<>();
properties.put("hibernate.dialect",
env.getProperty("hibernate.dialect"));
properties.put("hibernate.show-sql",
env.getProperty("jdbc.show-sql"));
em.setJpaPropertyMap(properties);
return em;
}
@Bean
public DataSource db2Datasource() {
DriverManagerDataSource dataSource
= new DriverManagerDataSource();
dataSource.setDriverClassName(
env.getProperty("jdbc.driver-class-name"));
dataSource.setUrl(env.getProperty("db2.datasource.url"));
dataSource.setUsername(env.getProperty("db2.datasource.username"));
dataSource.setPassword(env.getProperty("db2.datasource.password"));
return dataSource;
}
@Bean
public PlatformTransactionManager db2TransactionManager() {
JpaTransactionManager transactionManager
= new JpaTransactionManager();
transactionManager.setEntityManagerFactory(
db2EntityManager().getObject());
return transactionManager;
}
}
Here you can find the complete Example on my blog : Spring Boot with Multiple DataSource Configuration
I customized Tomcat DataSource in Spring-Boot 2.
Dependency versions:
May be it will be useful for somebody.
application.yml
spring:
datasource:
driver-class-name: org.postgresql.Driver
type: org.apache.tomcat.jdbc.pool.DataSource
url: jdbc:postgresql://${spring.datasource.database.host}:${spring.datasource.database.port}/${spring.datasource.database.name}
database:
host: localhost
port: 5432
name: rostelecom
username: postgres
password: postgres
tomcat:
validation-query: SELECT 1
validation-interval: 30000
test-on-borrow: true
remove-abandoned: true
remove-abandoned-timeout: 480
test-while-idle: true
time-between-eviction-runs-millis: 60000
log-validation-errors: true
log-abandoned: true
Java
@Bean
@Primary
@ConfigurationProperties("spring.datasource.tomcat")
public PoolConfiguration postgresDataSourceProperties() {
return new PoolProperties();
}
@Bean(name = "primaryDataSource")
@Primary
@Qualifier("primaryDataSource")
@ConfigurationProperties(prefix = "spring.datasource")
public DataSource primaryDataSource() {
PoolConfiguration properties = postgresDataSourceProperties();
return new DataSource(properties);
}
The main reason why it had been done is several DataSources in application and one of them it is necessary to mark as a @Primary.
this Func may help you . it add every list object to grid view
private void show_data()
{
BindingSource Source = new BindingSource();
for (int i = 0; i < CC.Contects.Count; i++)
{
Source.Add(CC.Contects.ElementAt(i));
};
Data_View.DataSource = Source;
}
I write this for simple database app
Vertex *f=(findvertex(from));
if(!f) {
cerr << "vertex not found" << endl;
exit(1) // or return;
}
Because findVertex
can return NULL
if it can't find the vertex.
Otherwise this f->adj;
is trying to do
NULL->adj;
Which causes access violation.
private void txtuser_KeyPress(object sender, KeyPressEventArgs e)
{
if (!char.IsLetter(e.KeyChar) && !char.IsWhiteSpace(e.KeyChar) && !char.IsControl(e.KeyChar))
{
e.Handled = true;
}
}
What's wrong with
import sys
from os.path import dirname, abspath
local_dir = abspath(dirname(__file__))
sys.path.append(local_dir)
import somescript
or better still wrap the functionality in a function, e.g. baz, then do this.
import sys
from os.path import dirname, abspath
local_dir = abspath(dirname(__file__))
sys.path.append(local_dir)
import somescript
somescript.baz()
There seem to be a lot of scripts starting python processes or forking, is that a requirement?
I was wondering about the same thing and I've found this: http://docs.kohanaphp.com/helpers/url.
You can see a clear example using the url::current()
method.
If you have this URL: http://example.com/kohana/index.php/welcome/home.html?query=string
then using url:current()
gives you the URI which, according to the documentation, is: welcome/home
Using LIKE:
SELECT *
FROM TABLE
WHERE column LIKE '%cats%' --case-insensitive
If you're using Xamarin.Forms you might want to check out Didn't find class "com.google.firebase.provider.FirebaseInitProvider"? as this captures the issue with the dex error with google firebase on startup (unresolved at this time).
I've reverted to using no shrinking in the short-term and plan to use ProGuard until R8 is more stable.
For me, this was something as simple as a missing version for my artifact - "1.1-SNAPSHOT"
While you can't yet get Firefox to remove the dropdown arrow (see MatTheCat's post), you can hide your "stylized" background image from showing in Firefox.
-moz-background-position: -9999px -9999px!important;
This will position it out of frame, leaving you with the default select box arrow – while keeping the stylized version in Webkit.
See also: How to properly override clone method?. Cloning is broken in Java, it's so hard to get it right, and even when it does it doesn't really offer much, so it's not really worth the hassle.
The best solution I've found in this is to create a lookup table with the possible values as a primary key, and create a foreign key to the lookup table.
The following is function would work for async
wrap or promise then
chains
const readFileAsync = async (path) => fs.readFileSync(path, 'utf8');
To resolve this issue, you have to delete the .snap file located in the directory:
<workspace-directory>\.metadata\.plugins\org.eclipse.core.resources
.
After deleting this file, you could start Eclipse with no problem.
To subtract timevals:
gettimeofday(&t0, 0);
/* ... */
gettimeofday(&t1, 0);
long elapsed = (t1.tv_sec-t0.tv_sec)*1000000 + t1.tv_usec-t0.tv_usec;
This is assuming you'll be working with intervals shorter than ~2000 seconds, at which point the arithmetic may overflow depending on the types used. If you need to work with longer intervals just change the last line to:
long long elapsed = (t1.tv_sec-t0.tv_sec)*1000000LL + t1.tv_usec-t0.tv_usec;
If you don't like anonymous functions:
try {
DB::connection()->pdo->beginTransaction();
// database queries here
DB::connection()->pdo->commit();
} catch (\PDOException $e) {
// Woopsy
DB::connection()->pdo->rollBack();
}
Update: For laravel 4, the pdo
object isn't public anymore so:
try {
DB::beginTransaction();
// database queries here
DB::commit();
} catch (\PDOException $e) {
// Woopsy
DB::rollBack();
}
a = np.arange(18).reshape(9,2)
b = a.reshape(3,3,2).swapaxes(0,2)
# a:
array([[ 0, 1],
[ 2, 3],
[ 4, 5],
[ 6, 7],
[ 8, 9],
[10, 11],
[12, 13],
[14, 15],
[16, 17]])
# b:
array([[[ 0, 6, 12],
[ 2, 8, 14],
[ 4, 10, 16]],
[[ 1, 7, 13],
[ 3, 9, 15],
[ 5, 11, 17]]])
You can do it by making the background into a pattern:
<defs>
<pattern id="img1" patternUnits="userSpaceOnUse" width="100" height="100">
<image href="wall.jpg" x="0" y="0" width="100" height="100" />
</pattern>
</defs>
Adjust the width and height according to your image, then reference it from the path like this:
<path d="M5,50
l0,100 l100,0 l0,-100 l-100,0
M215,100
a50,50 0 1 1 -100,0 50,50 0 1 1 100,0
M265,50
l50,100 l-100,0 l50,-100
z"
fill="url(#img1)" />
Add the following to Body
tag,
<body onload="document.forms['member_signup'].submit()">
and give name
attribute to your Form
.
<form method="POST" action="" name="member_signup">
pod 'Alamofire'
pod 'SwiftyJSON'
pod 'ReachabilitySwift'
import UIKit
import Alamofire
import SwiftyJSON
import SystemConfiguration
class WebServiceHelper: NSObject {
typealias SuccessHandler = (JSON) -> Void
typealias FailureHandler = (Error) -> Void
// MARK: - Internet Connectivity
class func isConnectedToNetwork() -> Bool {
var zeroAddress = sockaddr_in()
zeroAddress.sin_len = UInt8(MemoryLayout<sockaddr_in>.size)
zeroAddress.sin_family = sa_family_t(AF_INET)
guard let defaultRouteReachability = withUnsafePointer(to: &zeroAddress, {
$0.withMemoryRebound(to: sockaddr.self, capacity: 1) {
SCNetworkReachabilityCreateWithAddress(nil, $0)
}
}) else {
return false
}
var flags: SCNetworkReachabilityFlags = []
if !SCNetworkReachabilityGetFlags(defaultRouteReachability, &flags) {
return false
}
let isReachable = flags.contains(.reachable)
let needsConnection = flags.contains(.connectionRequired)
return (isReachable && !needsConnection)
}
// MARK: - Helper Methods
class func getWebServiceCall(_ strURL : String, isShowLoader : Bool, success : @escaping SuccessHandler, failure : @escaping FailureHandler)
{
if isConnectedToNetwork() {
print(strURL)
if isShowLoader == true {
AppDelegate.getDelegate().showLoader()
}
Alamofire.request(strURL).responseJSON { (resObj) -> Void in
print(resObj)
if resObj.result.isSuccess {
let resJson = JSON(resObj.result.value!)
if isShowLoader == true {
AppDelegate.getDelegate().dismissLoader()
}
debugPrint(resJson)
success(resJson)
}
if resObj.result.isFailure {
let error : Error = resObj.result.error!
if isShowLoader == true {
AppDelegate.getDelegate().dismissLoader()
}
debugPrint(error)
failure(error)
}
}
}else {
CommonMethods.showAlertWithError("", strMessage: Messages.NO_NETWORK, withTarget: (AppDelegate.getDelegate().window!.rootViewController)!)
}
}
class func getWebServiceCall(_ strURL : String, params : [String : AnyObject]?, isShowLoader : Bool, success : @escaping SuccessHandler, failure :@escaping FailureHandler){
if isConnectedToNetwork() {
if isShowLoader == true {
AppDelegate.getDelegate().showLoader()
}
Alamofire.request(strURL, method: .get, parameters: params, encoding: JSONEncoding.default, headers: nil).responseJSON(completionHandler: {(resObj) -> Void in
print(resObj)
if resObj.result.isSuccess {
let resJson = JSON(resObj.result.value!)
if isShowLoader == true {
AppDelegate.getDelegate().dismissLoader()
}
success(resJson)
}
if resObj.result.isFailure {
let error : Error = resObj.result.error!
if isShowLoader == true {
AppDelegate.getDelegate().dismissLoader()
}
failure(error)
}
})
}
else {
CommonMethods.showAlertWithError("", strMessage: Messages.NO_NETWORK, withTarget: (AppDelegate.getDelegate().window!.rootViewController)!)
}
}
class func postWebServiceCall(_ strURL : String, params : [String : AnyObject]?, isShowLoader : Bool, success : @escaping SuccessHandler, failure :@escaping FailureHandler)
{
if isConnectedToNetwork()
{
if isShowLoader == true
{
AppDelegate.getDelegate().showLoader()
}
Alamofire.request(strURL, method: .post, parameters: params, encoding: JSONEncoding.default, headers: nil).responseJSON(completionHandler: {(resObj) -> Void in
print(resObj)
if resObj.result.isSuccess
{
let resJson = JSON(resObj.result.value!)
if isShowLoader == true
{
AppDelegate.getDelegate().dismissLoader()
}
success(resJson)
}
if resObj.result.isFailure
{
let error : Error = resObj.result.error!
if isShowLoader == true
{
AppDelegate.getDelegate().dismissLoader()
}
failure(error)
}
})
}else {
CommonMethods.showAlertWithError("", strMessage: Messages.NO_NETWORK, withTarget: (AppDelegate.getDelegate().window!.rootViewController)!)
}
}
class func postWebServiceCallWithImage(_ strURL : String, image : UIImage!, strImageParam : String, params : [String : AnyObject]?, isShowLoader : Bool, success : @escaping SuccessHandler, failure : @escaping FailureHandler)
{
if isConnectedToNetwork() {
if isShowLoader == true
{
AppDelegate.getDelegate().showLoader()
}
Alamofire.upload(
multipartFormData: { multipartFormData in
if let imageData = UIImageJPEGRepresentation(image, 0.5) {
multipartFormData.append(imageData, withName: "Image.jpg")
}
for (key, value) in params! {
let data = value as! String
multipartFormData.append(data.data(using: String.Encoding.utf8)!, withName: key)
print(multipartFormData)
}
},
to: strURL,
encodingCompletion: { encodingResult in
switch encodingResult {
case .success(let upload, _, _):
upload.responseJSON { response in
debugPrint(response)
//let datastring = String(data: response, encoding: String.Encoding.utf8)
// print(datastring)
}
case .failure(let encodingError):
print(encodingError)
if isShowLoader == true
{
AppDelegate.getDelegate().dismissLoader()
}
let error : NSError = encodingError as NSError
failure(error)
}
switch encodingResult {
case .success(let upload, _, _):
upload.responseJSON { (response) -> Void in
if response.result.isSuccess
{
let resJson = JSON(response.result.value!)
if isShowLoader == true
{
AppDelegate.getDelegate().dismissLoader()
}
success(resJson)
}
if response.result.isFailure
{
let error : Error = response.result.error! as Error
if isShowLoader == true
{
AppDelegate.getDelegate().dismissLoader()
}
failure(error)
}
}
case .failure(let encodingError):
if isShowLoader == true
{
AppDelegate.getDelegate().dismissLoader()
}
let error : NSError = encodingError as NSError
failure(error)
}
}
)
}
else
{
CommonMethods.showAlertWithError("", strMessage: Messages.NO_NETWORK, withTarget: (AppDelegate.getDelegate().window!.rootViewController)!)
}
}
}
==================================
Call Method
let aParams : [String : String] = [
"ReqCode" : Constants.kRequestCodeLogin,
]
WebServiceHelper.postWebServiceCall(Constants.BaseURL, params: aParams as [String : AnyObject]?, isShowLoader: true, success: { (responceObj) in
if "\(responceObj["RespCode"])" != "1"
{
let alert = UIAlertController(title: Constants.kAppName, message: "\(responceObj["RespMsg"])", preferredStyle: UIAlertControllerStyle.alert)
let OKAction = UIAlertAction(title: "OK", style: .default) { (action:UIAlertAction!) in
}
alert.addAction(OKAction)
self.present(alert, animated: true, completion: nil)
}
else
{
let aParams : [String : String] = [
"Password" : self.dictAddLogin[AddLoginConstants.kPassword]!,
]
CommonMethods.saveCustomObject(aParams as AnyObject?, key: Constants.kLoginData)
}
}, failure:
{ (error) in
CommonMethods.showAlertWithError(Constants.kALERT_TITLE_Error, strMessage: error.localizedDescription,withTarget: (AppDelegate.getDelegate().window!.rootViewController)!)
})
}
You can use Flexible, in this case the person.name could be a long name (Labels and BlankSpace are custom classes that return widgets) :
new Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
new Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
new Flexible(
child: Labels.getTitle_2(person.name,
color: StyleColors.COLOR_BLACK)),
BlankSpace.column(3),
Labels.getTitle_1(person.likes())
]),
BlankSpace.row(3),
Labels.getTitle_2(person.shortDescription),
],
)
Thanks to a related question, I found out that I need to "checkout" the remote branch as a new local branch, and specify a new local branch name.
git checkout -b newlocalbranchname origin/branch-name
Or you can do:
git checkout -t origin/branch-name
The latter will create a branch that is also set to track the remote branch.
Update: It's been 5 years since I originally posted this question. I've learned a lot and git has improved since then. My usual workflow is a little different now.
If I want to fetch the remote branches, I simply run:
git pull
This will fetch all of the remote branches and merge the current branch. It will display an output that looks something like this:
From github.com:andrewhavens/example-project
dbd07ad..4316d29 master -> origin/master
* [new branch] production -> origin/production
* [new branch] my-bugfix-branch -> origin/my-bugfix-branch
First, rewinding head to replay your work on top of it...
Fast-forwarded master to 4316d296c55ac2e13992a22161fc327944bcf5b8.
Now git knows about my new my-bugfix-branch
. To switch to this branch, I can simply run:
git checkout my-bugfix-branch
Normally, I would need to create the branch before I could check it out, but in newer versions of git, it's smart enough to know that you want to checkout a local copy of this remote branch.
If storing less then 1 mil records, and high performance is not an issue go for varchar(20)/char(20) otherwise I've found that for storing even 100 milion global business phones or personal phones, int is best. Reason : smaller key -> higher read/write speed, also formatting can allow for duplicates.
1 phone in char(20) = 20 bytes vs 8 bytes bigint
(or 10 vs 4 bytes int
for local phones, up to 9 digits) , less entries can enter the index block => more blocks => more searches, see this for more info (writen for Mysql but it should be true for other Relational Databases).
Here is an example of phone tables:
CREATE TABLE `phoneNrs` (
`internationalTelNr` bigint(20) unsigned NOT NULL COMMENT 'full number, no leading 00 or +, up to 19 digits, E164 format',
`format` varchar(40) NOT NULL COMMENT 'ex: (+NN) NNN NNN NNN, optional',
PRIMARY KEY (`internationalTelNr`)
)
DEFAULT CHARSET=ascii
DEFAULT COLLATE=ascii_bin
or with processing/splitting before insert (2+2+4+1 = 9 bytes)
CREATE TABLE `phoneNrs` (
`countryPrefix` SMALLINT unsigned NOT NULL COMMENT 'countryCode with no leading 00 or +, up to 4 digits',
`countyPrefix` SMALLINT unsigned NOT NULL COMMENT 'countyCode with no leading 0, could be missing for short number format, up to 4 digits',
`localTelNr` int unsigned NOT NULL COMMENT 'local number, up to 9 digits',
`localLeadingZeros` tinyint unsigned NOT NULL COMMENT 'used to reconstruct leading 0, IF(localLeadingZeros>0;LPAD(localTelNr,localLeadingZeros+LENGTH(localTelNr),'0');localTelNr)',
PRIMARY KEY (`countryPrefix`,`countyPrefix`,`localLeadingZeros`,`localTelNr`) -- ordered for fast inserts
)
DEFAULT CHARSET=ascii
DEFAULT COLLATE=ascii_bin
;
Also "the phone number is not a number", in my opinion is relative to the type of phone numbers. If we're talking of an internal mobile phoneBook, then strings are fine, as the user may wish to store GSM Hash Codes. If storing E164 phones, bigint is the best option.
There is a nice open source Git stack called Git Blit. It is available for different platform and in different packages. You can also easily deploy it to your existing Tomcat or any other servlet container. Take a look at Setup git server on windows in few clicks tutorial for more details, it will take you around 10 minutes to get basic setup.
Why don't you just do this
<a href="yoururl.html"><div>...</div></a>
That should work fine and will prompt the "clickable item" cursor change, which the aforementioned solution will not do.
2 from decimal numbering system in binary is as follows
10
now if you do
2 << 11
it would be , 11 zeros would be padded on the right side
1000000000000
The signed left shift operator "<<" shifts a bit pattern to the left, and the signed right shift operator ">>" shifts a bit pattern to the right. The bit pattern is given by the left-hand operand, and the number of positions to shift by the right-hand operand. The unsigned right shift operator ">>>" shifts a zero into the leftmost position, while the leftmost position after ">>" depends on sign extension [..]
left shifting results in multiplication by 2 (*2) in terms or arithmetic
For example
2 in binary 10
, if you do <<1
that would be 100
which is 4
4 in binary 100
, if you do <<1
that would be 1000
which is 8
Also See
There are two solutions to fix this:
clear:both
after the last floated tag. This works good.overflow: hidden
Night's answer is correct
html, body {margin:0;padding:0;height:100%;}
Also check that your div or element is NOT inside another one (with height less than 100%) Hope this helps someone else.
$("#checkboxes").children("input:checked")
will give you an array of the elements themselves. If you just specifically need the names:
$("#checkboxes").children("input:checked").map(function() {
return this.name;
});
There is a function called shift()
.
It will remove the first element of your array.
There is some good documentation and examples.
Main issue is that you first need to set the location of your x and y ticks. Also, it helps to use the more object-oriented interface to matplotlib. Namely, interact with the axes
object directly.
import matplotlib.pyplot as plt
import numpy as np
column_labels = list('ABCD')
row_labels = list('WXYZ')
data = np.random.rand(4,4)
fig, ax = plt.subplots()
heatmap = ax.pcolor(data)
# put the major ticks at the middle of each cell, notice "reverse" use of dimension
ax.set_yticks(np.arange(data.shape[0])+0.5, minor=False)
ax.set_xticks(np.arange(data.shape[1])+0.5, minor=False)
ax.set_xticklabels(row_labels, minor=False)
ax.set_yticklabels(column_labels, minor=False)
plt.show()
Hope that helps.
covert bit map to drawable in sketchware app using code
android.graphics.drawable.BitmapDrawable d = new android.graphics.drawable.BitmapDrawable(getResources(), bitmap);
Image.fromarray -> returns an image object
from PIL import Image
import numpy as np
PIL_image = Image.fromarray(np.uint8(numpy_image)).convert('RGB')
PIL_image = Image.fromarray(numpy_image.astype('uint8'), 'RGB')
Add this extension method to your code:
public static Uri UrlOriginal(this HttpRequestBase request)
{
string hostHeader = request.Headers["host"];
return new Uri(string.Format("{0}://{1}{2}",
request.Url.Scheme,
hostHeader,
request.RawUrl));
}
And then you can execute it off the RequestContext.HttpContext.Request
property.
There is a bug (can be side-stepped, see below) in Asp.Net that arises on machines that use ports other than port 80 for the local website (a big issue if internal web sites are published via load-balancing on virtual IP and ports are used internally for publishing rules) whereby Asp.Net will always add the port on the AbsoluteUri
property - even if the original request does not use it.
This code ensures that the returned url is always equal to the Url the browser originally requested (including the port - as it would be included in the host header) before any load-balancing etc takes place.
At least, it does in our (rather convoluted!) environment :)
If there are any funky proxies in between that rewrite the host header, then this won't work either.
Update 30th July 2013
As mentioned by @KevinJones in comments below - the setting I mention in the next section has been documented here: http://msdn.microsoft.com/en-us/library/hh975440.aspx
Although I have to say I couldn't get it work when I tried it - but that could just be me making a typo or something.
Update 9th July 2012
I came across this a little while ago, and meant to update this answer, but never did. When an upvote just came in on this answer I thought I should do it now.
The 'bug' I mention in Asp.Net can be be controlled with an apparently undocumented appSettings value - called 'aspnet:UseHostHeaderForRequest'
- i.e:
<appSettings>
<add key="aspnet:UseHostHeaderForRequest" value="true" />
</appSettings>
I came across this while looking at HttpRequest.Url
in ILSpy - indicated by the --->
on the left of the following copy/paste from that ILSpy view:
public Uri Url
{
get
{
if (this._url == null && this._wr != null)
{
string text = this.QueryStringText;
if (!string.IsNullOrEmpty(text))
{
text = "?" + HttpEncoder.CollapsePercentUFromStringInternal(text,
this.QueryStringEncoding);
}
---> if (AppSettings.UseHostHeaderForRequestUrl)
{
string knownRequestHeader = this._wr.GetKnownRequestHeader(28);
try
{
if (!string.IsNullOrEmpty(knownRequestHeader))
{
this._url = new Uri(string.Concat(new string[]
{
this._wr.GetProtocol(),
"://",
knownRequestHeader,
this.Path,
text
}));
}
}
catch (UriFormatException)
{ }
}
if (this._url == null) { /* build from server name and port */
...
I personally haven't used it - it's undocumented and so therefore not guaranteed to stick around - however it might do the same thing that I mention above. To increase relevancy in search results - and to acknowledge somebody else who seeems to have discovered this - the 'aspnet:UseHostHeaderForRequest'
setting has also been mentioned by Nick Aceves on Twitter
Yet another method to solve: updating registry. In my case I could not alter GPO, and -UseBasicParsing breaks parts of the access to the website. Also I had a service user without log in permissions, so I could not log in as the user and run the GUI.
To fix,
In the file
You can use the Directory.GetFiles method
Also see Directory.GetFiles Method (String, String, SearchOption)
You can specify the search option in this overload.
TopDirectoryOnly: Includes only the current directory in a search.
AllDirectories: Includes the current directory and all the subdirectories in a search operation. This option includes reparse points like mounted drives and symbolic links in the search.
// searches the current directory and sub directory
int fCount = Directory.GetFiles(path, "*", SearchOption.AllDirectories).Length;
// searches the current directory
int fCount = Directory.GetFiles(path, "*", SearchOption.TopDirectoryOnly).Length;
You don't need to do special things in the form. You just build the comment correctly in the show action:
class ArticlesController < ActionController::Base
....
def show
@article = Article.find(params[:id])
@new_comment = @article.comments.build
end
....
end
and then make a form for it in the article view:
<% form_for @new_comment do |f| %>
<%= f.text_area :text %>
<%= f.submit "Post Comment" %>
<% end %>
by default, this comment will go to the create
action of CommentsController
, which you will then probably want to put redirect :back
into so you're routed back to the Article
page.
1. Approach:
RMI uses an object-oriented paradigm where the user needs to know the object and the method of the object he needs to invoke.
RPC doesn't deal with objects. Rather, it calls specific subroutines that are already established.
2. Working:
With RPC, you get a procedure call that looks pretty much like a local call. RPC handles the complexities involved with passing the call from local to the remote computer.
RMI does the very same thing, but RMI passes a reference to the object and the method that is being called.
RMI = RPC + Object-orientation
3. Better one:
RMI is a better approach compared to RPC, especially with larger programs as it provides a cleaner code that is easier to identify if something goes wrong.
4. System Examples:
RPC Systems: SUN RPC, DCE RPC
RMI Systems: Java RMI, CORBA, Microsoft DCOM/COM+, SOAP(Simple Object Access Protocol)
If we're going to mention regular expressions, we might as well mention the switch
statement.
var expr = 'Papayas';_x000D_
switch (expr) {_x000D_
case 'Oranges':_x000D_
console.log('Oranges are $0.59 a pound.');_x000D_
break;_x000D_
case 'Mangoes':_x000D_
case 'Papayas': // Mangoes or papayas_x000D_
console.log('Mangoes and papayas are $2.79 a pound.');_x000D_
// expected output: "Mangoes and papayas are $2.79 a pound."_x000D_
break;_x000D_
default:_x000D_
console.log('Sorry, we are out of ' + expr + '.');_x000D_
}
_x000D_
Use either JavaScript or jQuery for this.
Using JavaScript
<script>
function val() {
d = document.getElementById("select_id").value;
alert(d);
}
</script>
<select onchange="val()" id="select_id">
Using jQuery
$('#select_id').change(function(){
alert($(this).val());
})
@Multipart
@POST(Config.UPLOAD_IMAGE)
Observable<Response<String>> uploadPhoto(@Header("Access-Token") String header, @Part MultipartBody.Part imageFile);
And you can call this api like this:
public void uploadImage(File file) {
// create multipart
RequestBody requestFile = RequestBody.create(MediaType.parse("multipart/form-data"), file);
MultipartBody.Part body = MultipartBody.Part.createFormData("image", file.getName(), requestFile);
// upload
getViewInteractor().showProfileUploadingProgress();
Observable<Response<String>> observable = api.uploadPhoto("",body);
// on Response
subscribeForNetwork(observable, new ApiObserver<Response<String>>() {
@Override
public void onError(Throwable e) {
getViewInteractor().hideProfileUploadingProgress();
}
@Override
public void onResponse(Response<String> response) {
if (response.code() != 200) {
Timber.d("error " + response.code());
return;
}
getViewInteractor().hideProfileUploadingProgress();
getViewInteractor().onProfileImageUploadSuccess(response.body());
}
});
}
Implement both deprecated and non-deprecated methods like below. First one is to handle API level 21 and higher, second one is handle lower than API level 21
webViewClient = object : WebViewClient() {
.
.
@RequiresApi(Build.VERSION_CODES.LOLLIPOP)
override fun shouldOverrideUrlLoading(view: WebView?, request: WebResourceRequest?): Boolean {
parseUri(request?.url)
return true
}
@SuppressWarnings("deprecation")
override fun shouldOverrideUrlLoading(view: WebView?, url: String?): Boolean {
parseUri(Uri.parse(url))
return true
}
}
This answer is not accurate because it mix description of UTM and UTM itself (Universal Turing Machine).
We have good answer but from different perspective and it do not show directly flaws in current top answer.
First of all we can agree that human can work as UTM. This mean if we do
CSS + Human == UTM
Then CSS
part is useless because all work can be done by Human
who will do UTM part. Act of clicking can be UTM, because you do not click at random but only in specific places.
Instead of CSS I could use this text (Rule 110):
000 -> 0
001 -> 1
010 -> 1
011 -> 1
100 -> 0
101 -> 1
110 -> 1
111 -> 0
To guide my actions and result will be same. This mean this text UTM? No this is only input (description) that other UTM (human or computer) can read and run. Clicking is enough to run any UTM.
Critical part that CSS lack is ability to change of it own state in arbitrary way, if CSS could generate clicks then it would be UTM. Argument that your clicks are "crank" for CSS is not accurate because real "crank" for CSS is Layout Engine that run it and it should be enough to prove that CSS is UTM.
In your Model set:
protected $dates = ['name_field'];
after in your view :
{{ $user->from_date->format('d/m/Y') }}
works
It skips to the start of the next page. (Applies mostly to terminals where the output device is a printer rather than a VDU.)
The Error is here
lastrow = wsPOR.Range("A" & Rows.Count).End(xlUp).Row + 1
wsPOR is a workbook and not a worksheet. If you are working with "Sheet1" of that workbook then try this
lastrow = wsPOR.Sheets("Sheet1").Range("A" & _
wsPOR.Sheets("Sheet1").Rows.Count).End(xlUp).Row + 1
Similarly
wsPOR.Range("A2:G" & lastrow).Select
should be
wsPOR.Sheets("Sheet1").Range("A2:G" & lastrow).Select
If your'e looking bor boost's shared_ptr, you could have easily found the answer by googling shared_ptr, following the links to the docs, and pulling up a complete working example such as this.
In any case, here is a minimalistic complete working example for you which I just hacked up:
#include <boost/shared_ptr.hpp>
struct MyGizmo
{
int n_;
};
int main()
{
boost::shared_ptr<MyGizmo> p(new MyGizmo);
return 0;
}
In order for the #include
to find the header, the libraries obviously need to be in the search path. In MSVC, you set this in Project Settings>Configuration Properties>C/C++>Additional Include Directories. In my case, this is set to C:\Program Files (x86)\boost\boost_1_42
jQuery has a built-in method for this:
$(window).resize(function () { /* do something */ });
For the sake of UI responsiveness, you might consider using a setTimeout to call your code only after some number of milliseconds, as shown in the following example, inspired by this:
function doSomething() {
alert("I'm done resizing for the moment");
};
var resizeTimer;
$(window).resize(function() {
clearTimeout(resizeTimer);
resizeTimer = setTimeout(doSomething, 100);
});
If I invoke clone() method on array of Objects of type A, how will it clone its elements?
The elements of the array will not be cloned.
Will the copy be referencing to the same objects?
Yes.
Or will it call (element of type A).clone() for each of them?
No, it will not call clone()
on any of the elements.
There is a way to do key listeners in python. This functionality is available through pynput.
Command line:
$ pip install pynput
Python code:
from pynput import keyboard
# your code here
^((?!-))(xn--)?[a-z0-9][a-z0-9-_]{0,61}[a-z0-9]{0,}\.?((xn--)?([a-z0-9\-.]{1,61}|[a-z0-9-]{0,30})\.[a-z-1-9]{2,})$
will validate such domains as ??????.??
after encoding.
https://regex101.com/r/Hf8wFM/1 - sandbox
You can set the ReadOnly property to true.
Quoth the link:
When this property is set to true, the contents of the control cannot be changed by the user at runtime. With this property set to true, you can still set the value of the Text property in code. You can use this feature instead of disabling the control with the Enabled property to allow the contents to be copied and ToolTips to be shown.
def sumoflist(l):
total = 0
for i in l:
total +=i
return total
Just use another container to wrap last two divs. Don't forget to use CSS prefixes.
#productShowcaseContainer {_x000D_
display: flex;_x000D_
flex-direction: column;_x000D_
height: 600px;_x000D_
width: 580px;_x000D_
background-color: rgb(240, 240, 240);_x000D_
}_x000D_
_x000D_
#productShowcaseTitle {_x000D_
height: 100px;_x000D_
background-color: rgb(200, 200, 200);_x000D_
}_x000D_
_x000D_
#anotherContainer{_x000D_
display: flex;_x000D_
height: 100%;_x000D_
}_x000D_
_x000D_
#productShowcaseDetail {_x000D_
background-color: red;_x000D_
flex: 4;_x000D_
}_x000D_
_x000D_
#productShowcaseThumbnailContainer {_x000D_
background-color: blue;_x000D_
flex: 1;_x000D_
}
_x000D_
<div id="productShowcaseContainer">_x000D_
<div id="productShowcaseTitle">1</div>_x000D_
<div id="anotherContainer">_x000D_
<div id="productShowcaseDetail">2</div>_x000D_
<div id="productShowcaseThumbnailContainer">3</div>_x000D_
</div>_x000D_
</div>
_x000D_
To update @iAleksandr answer for Xcode 11, which causes problems due to Scene kit.
let appDelegate = UIApplication.shared.delegate as! AppDelegate appDelegate.window?.rootViewController = rootViewController
With
guard let windowScene = UIApplication.shared.connectedScenes.first as? UIWindowScene,let sceneDelegate = windowScene.delegate as? SceneDelegate else {
return
}
sceneDelegate.window?.rootViewController = rootViewController
func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
Switcher.updateRootViewController()
guard let _ = (scene as? UIWindowScene) else { return }
}
for a non-nested dict (since the title does not mention that case, it might be interesting for other people)
{str(k): str(v) for k, v in my_dict.items()}
If you append this to user.js
:
exports.User = User;
then in server.js
you can do:
var userFile = require('./user.js');
var User = userFile.User;
http://nodejs.org/docs/v0.4.10/api/globals.html#require
Another way is:
global.User = User;
then this would be enough in server.js
:
require('./user.js');
If your EditText is not clear:
editText.setText("");
editText.append("New text");
or
editText.setText(null);
editText.append("New text");
Another alternative way using get method with requests:
import requests
wjdata = requests.get('url').json()
print wjdata.get('data').get('current_condition')[0].get('temp_C')
Just another function using native php functions.
function dirSize($dir)
{
$dirSize = 0;
if(!is_dir($dir)){return false;};
$files = scandir($dir);if(!$files){return false;}
$files = array_diff($files, array('.','..'));
foreach ($files as $file) {
if(is_dir("$dir/$file")){
$dirSize += dirSize("$dir/$file");
}else{
$dirSize += filesize("$dir/$file");
}
}
return $dirSize;
}
NOTE: this function returns the files sizes, NOT the size on disk
Remember there are two independent git repos we are talking about. Your local repo with your code and the remote running somewhere else.
Your are right, when you change a branch, HEAD points to your current branch. All of this is happening on your local git repo. Not the remote repo, which could be owned by another developer, or siting on a sever in your office, or github, or another directory on the filesystem, or etc...
Your computer (local repo) has no business changing the HEAD pointer on the remote git repo. It could be owned by a different developer for example.
One more thing, what your computer calls origin/XXX is your computer's understanding of the state of the remote at the time of the last fetch.
So what would "organically" update origin/HEAD? It would be activity on the remote git repo. Not your local repo.
People have mentioned
git symbolic-ref HEAD refs/head/my_other_branch
Normally, that is used when there is a shared central git repo on a server for use by the development team. It would be a command executed on the remote computer. You would see this as activity on the remote git repo.
you may also try full xpath, I had a similar issue where I had to click on an element which has a property javascript onclick function. the full xpath method worked and no interactable exception was thrown.
The accepted answer will return all the parent nodes too. To get only the actual nodes with ABC even if the string is after
:
//*[text()[contains(.,'ABC')]]/text()[contains(.,"ABC")]
git log $(git log --pretty=format:%H|tail -1)
If you just want to do it once, without adding a shortcut, you can always type
<prefix>
:
kill-window
<enter>
Copy your SDK path and assign it to the environment variable ANDROID_SDK_ROOT
Refer pic below:
the most effective method is to use android-async-http
You can use this code to upload a file:
// gather your request parameters
File myFile = new File("/path/to/file.png");
RequestParams params = new RequestParams();
try {
params.put("profile_picture", myFile);
} catch(FileNotFoundException e) {}
// send request
AsyncHttpClient client = new AsyncHttpClient();
client.post(url, params, new AsyncHttpResponseHandler() {
@Override
public void onSuccess(int statusCode, Header[] headers, byte[] bytes) {
// handle success response
}
@Override
public void onFailure(int statusCode, Header[] headers, byte[] bytes, Throwable throwable) {
// handle failure response
}
});
Note that you can put this code directly into your main Activity, no need to create a background Task explicitly. AsyncHttp will take care of that for you!
Try this for check null
if (text == nil)
You can also use
:-0
This sets the cursor at the present line (blank here) at the 0 column.
There is Task
exists, It is unnesscery using BackgroundWorker
, Task
is more simple. for example:
ProgressDialog.cs:
public partial class ProgressDialog : Form
{
public System.Windows.Forms.ProgressBar Progressbar { get { return this.progressBar1; } }
public ProgressDialog()
{
InitializeComponent();
}
public void RunAsync(Action action)
{
Task.Run(action);
}
}
Done! Then you can reuse ProgressDialog anywhere:
var progressDialog = new ProgressDialog();
progressDialog.Progressbar.Value = 0;
progressDialog.Progressbar.Maximum = 100;
progressDialog.RunAsync(() =>
{
for (int i = 0; i < 100; i++)
{
Thread.Sleep(1000)
this.progressDialog.Progressbar.BeginInvoke((MethodInvoker)(() => {
this.progressDialog.Progressbar.Value += 1;
}));
}
});
progressDialog.ShowDialog();
you forgot for Java Desktop Aplication based on JSR296 as built-in Swing Framework in NetBeans
excluding AWT and JavaFX are all of your desribed frameworks are based on Swing, if you'll start with Swing then you'd be understand (clearly) for all these Swing's (Based Frameworks)
ATW, SWT (Eclipse), Java Desktop Aplication(Netbeans), SwingX, JGoodies
all there frameworks (I don't know something more about JGoodies) incl. JavaFX haven't long time any progress, lots of Swing's Based Frameworks are stoped, if not then without newest version
just my view - best of them is SwingX, but required deepest knowledge about Swing,
Look and Feel for Swing's Based Frameworks
The following function works for textfiles and binary files (returns only position in byte-count though), it does have the benefit to find strings even if they would overlap a line or buffer and would not be found when searching line- or buffer-wise.
def fnd(fname, s, start=0):
with open(fname, 'rb') as f:
fsize = os.path.getsize(fname)
bsize = 4096
buffer = None
if start > 0:
f.seek(start)
overlap = len(s) - 1
while True:
if (f.tell() >= overlap and f.tell() < fsize):
f.seek(f.tell() - overlap)
buffer = f.read(bsize)
if buffer:
pos = buffer.find(s)
if pos >= 0:
return f.tell() - (len(buffer) - pos)
else:
return -1
The idea behind this is:
I used something like this to find signatures of files inside larger ISO9660 files, which was quite fast and did not use much memory, you can also use a larger buffer to speed things up.
An alternative in Java 8:
String[] strings = list.stream().toArray(String[]::new);
The API appears to have changed (or at least, it doesn't work for me).
Running the following in the Package Manager Console works as expected:
Update-Database -Script -SourceMigration:0
In [44]: df['gdp'] = df['gdp'].shift(-1)
In [45]: df
Out[45]:
y gdp cap
0 1 3 5
1 2 7 9
2 8 4 2
3 3 7 7
4 6 NaN 7
In [46]: df[:-1]
Out[46]:
y gdp cap
0 1 3 5
1 2 7 9
2 8 4 2
3 3 7 7
I know this is an old question, but none of the answers worked for me, because I wanted to reliably (always be able to) set the cell into edit mode when possibly executing other events like Toolbar Button clicks, menu selections, etc. that may affect the default focus after those events return. I ended up needing a timer and invoke. The following code is in a new component derived from DataGridView. This code allows me to simply make a call to myXDataGridView.CurrentRow_SelectCellFocus(myDataPropertyName);
anytime I want to arbitrarily set a databound cell to edit mode (assuming the cell is Not in ReadOnly mode).
// If the DGV does not have Focus prior to a toolbar button Click,
// then the toolbar button will have focus after its Click event handler returns.
// To reliably set focus to the DGV, we need to time it to happen After event handler procedure returns.
private string m_SelectCellFocus_DataPropertyName = "";
private System.Timers.Timer timer_CellFocus = null;
public void CurrentRow_SelectCellFocus(string sDataPropertyName)
{
// This procedure is called by a Toolbar Button's Click Event to select and set focus to a Cell in the DGV's Current Row.
m_SelectCellFocus_DataPropertyName = sDataPropertyName;
timer_CellFocus = new System.Timers.Timer(10);
timer_CellFocus.Elapsed += TimerElapsed_CurrentRowSelectCellFocus;
timer_CellFocus.Start();
}
void TimerElapsed_CurrentRowSelectCellFocus(object sender, System.Timers.ElapsedEventArgs e)
{
timer_CellFocus.Stop();
timer_CellFocus.Elapsed -= TimerElapsed_CurrentRowSelectCellFocus;
timer_CellFocus.Dispose();
// We have to Invoke the method to avoid raising a threading error
this.Invoke((MethodInvoker)delegate
{
Select_Cell(m_SelectCellFocus_DataPropertyName);
});
}
private void Select_Cell(string sDataPropertyName)
{
/// When the Edit Mode is Enabled, set the initial cell to the Description
foreach (DataGridViewCell dgvc in this.SelectedCells)
{
// Clear previously selected cells
dgvc.Selected = false;
}
foreach (DataGridViewCell dgvc in this.CurrentRow.Cells)
{
// Select the Cell by its DataPropertyName
if (dgvc.OwningColumn.DataPropertyName == sDataPropertyName)
{
this.CurrentCell = dgvc;
dgvc.Selected = true;
this.Focus();
return;
}
}
}
String[] array = new String[items2.size()];
items2.toArray(array);
I rewrote your code in a more organized, better-practiced way:
import tkinter as tk
class Demo1:
def __init__(self, master):
self.master = master
self.frame = tk.Frame(self.master)
self.button1 = tk.Button(self.frame, text = 'New Window', width = 25, command = self.new_window)
self.button1.pack()
self.frame.pack()
def new_window(self):
self.newWindow = tk.Toplevel(self.master)
self.app = Demo2(self.newWindow)
class Demo2:
def __init__(self, master):
self.master = master
self.frame = tk.Frame(self.master)
self.quitButton = tk.Button(self.frame, text = 'Quit', width = 25, command = self.close_windows)
self.quitButton.pack()
self.frame.pack()
def close_windows(self):
self.master.destroy()
def main():
root = tk.Tk()
app = Demo1(root)
root.mainloop()
if __name__ == '__main__':
main()
Result:
To explain a bit more about ParaSara's answer: App Transport security will become mandatory and trying to turn it off may get your app rejected.
As a developer, you can turn App Transport security off if your networking code doesn't work with it, and you want to continue other development before fixing any problems. Say in a team of five, four can continue working on other things while one fixes all the problems. You can also turn App Transport security off as a debugging tool if you have networking problems and you want to check if they are caused by App Transport security. As soon as you know you should turn it on again immediately.
The solution that you must use in the future is not to use http at all, unless you use a third party server that doesn't support https. If your own server doesn't support https, Apple will have a problem with that. Even with third party servers, I wouldn't bet that Apple accepts it.
Same with the various checks for server security. At some point Apple will only accept justifiable exceptions.
But mostly, consider this: You are endangering the privacy of your customers. That's a big no-no in my book. Don't do that. Fix your code, don't ask for permission to run unsafe code.
Try this:
Swift 2.0:
textField.userInteractionEnabled = false
Swift 3.0:
textField.isUserInteractionEnabled = false
Or in storyboard uncheck "User Interaction Enabled"
I believe this is the simplest way of putting all what it is on the screen into a file. It is a native PS CmdLet so you don't have to change anything in yout script
Start-Transcript -Path Computer.log
Write-Host "everything will end up in Computer.log"
Stop-Transcript
I think I get what you mean. Let's say for example you want the right-most \ in the following string (which is stored in cell A1):
Drive:\Folder\SubFolder\Filename.ext
To get the position of the last \, you would use this formula:
=FIND("@",SUBSTITUTE(A1,"\","@",(LEN(A1)-LEN(SUBSTITUTE(A1,"\","")))/LEN("\")))
That tells us the right-most \ is at character 24. It does this by looking for "@" and substituting the very last "\" with an "@". It determines the last one by using
(len(string)-len(substitute(string, substring, "")))\len(substring)
In this scenario, the substring is simply "\" which has a length of 1, so you could leave off the division at the end and just use:
=FIND("@",SUBSTITUTE(A1,"\","@",LEN(A1)-LEN(SUBSTITUTE(A1,"\",""))))
Now we can use that to get the folder path:
=LEFT(A1,FIND("@",SUBSTITUTE(A1,"\","@",LEN(A1)-LEN(SUBSTITUTE(A1,"\","")))))
Here's the folder path without the trailing \
=LEFT(A1,FIND("@",SUBSTITUTE(A1,"\","@",LEN(A1)-LEN(SUBSTITUTE(A1,"\",""))))-1)
And to get just the filename:
=MID(A1,FIND("@",SUBSTITUTE(A1,"\","@",LEN(A1)-LEN(SUBSTITUTE(A1,"\",""))))+1,LEN(A1))
However, here is an alternate version of getting everything to the right of the last instance of a specific character. So using our same example, this would also return the file name:
=TRIM(RIGHT(SUBSTITUTE(A1,"\",REPT(" ",LEN(A1))),LEN(A1)))
Using jQuery you can use contents()
. For example:
var inside = $('#one').contents();
If you don't mind a crass writing style, Redis vs Memcached on the Systoilet blog is worth a read from a usability standpoint, but be sure to read the back & forth in the comments before drawing any conclusions on performance; there are some methodological problems (single-threaded busy-loop tests), and Redis has made some improvements since the article was written as well.
And no benchmark link is complete without confusing things a bit, so also check out some conflicting benchmarks at Dormondo's LiveJournal and the Antirez Weblog.
Edit -- as Antirez points out, the Systoilet analysis is rather ill-conceived. Even beyond the single-threading shortfall, much of the performance disparity in those benchmarks can be attributed to the client libraries rather than server throughput. The benchmarks at the Antirez Weblog do indeed present a much more apples-to-apples (with the same mouth) comparison.
If Eclipse was killed during a shutdown, the projects database may become corrupted (the project database is normally located in: workspace/.metadata/org.eclipse.core.resources/.root/1.tree
).
A message like this will be logged in Workspace/.metadata/.log
:
!MESSAGE Could not read metadata for '.../.metadata/.plugins/org.eclipse.core.resources/.root/.markers'.
The data is lost. You need to import your projects again (File->Import -> General->Existing Projects into Workspace).
The list of projects that were in the workspace can still be seen in .metadata/org.eclipse.core.resources/.projects/
.
Projects located outside the workspace will have a .location
file with the path to the project.
Yes, JavaScript variables will exist in the scope they are created.
var bannerID = 55;
<input id="EditBanner" type="button"
value="Edit Image" onclick="EditBanner(bannerID);"/>
function EditBanner(id) {
//Do something with id
}
If you use event handlers and jQuery it is simple also
$("#EditBanner").click(function() {
EditBanner(bannerID);
});
dropdownlist.ClearSelection(); //making sure the previous selection has been cleared
dropdownlist.Items.FindByValue(value).Selected = true;
As is shown in the following table, empty($foo)
is equivalent to $foo==null
and is_null($foo)
has the same function of $foo===null
. The table also shows some tricky values regarding the null
comparison. (? denotes an uninitialized variables. )
empty is_null
==null ===null isset array_key_exists
? | T | T | F | F
null | T | T | F | T
"" | T | F | T | T
[] | T | F | T | T
0 | T | F | T | T
false | T | F | T | T
true | F | F | T | T
1 | F | F | T | T
\0 | F | F | T | T
Seems like the order of the linking flags was not an issue in older versions of gcc. Eg gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-16)
comes with Centos-6.7 happy with linker option before inputfile; but gcc with ubuntu 16.04 gcc (Ubuntu 5.3.1-14ubuntu2.1) 5.3.1 20160413
does not allow.
Its not the gcc version alone, I has got something to with the distros
Within the range 0 = c < 128, yes the '
is the only difference for CPython 2.6.
>>> set(unichr(c).encode('unicode_escape') for c in range(128)) - set(chr(c).encode('string_escape') for c in range(128))
set(["'"])
Outside of this range the two types are not exchangeable.
>>> '\x80'.encode('string_escape')
'\\x80'
>>> '\x80'.encode('unicode_escape')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
UnicodeDecodeError: 'ascii' codec can’t decode byte 0x80 in position 0: ordinal not in range(128)
>>> u'1'.encode('unicode_escape')
'1'
>>> u'1'.encode('string_escape')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: escape_encode() argument 1 must be str, not unicode
On Python 3.x, the string_escape
encoding no longer exists, since str
can only store Unicode.
An easier way to get the machine epsilon for a given float type is to use np.finfo()
:
print(np.finfo(float).eps)
# 2.22044604925e-16
print(np.finfo(np.float32).eps)
# 1.19209e-07
For ChromeDriver the below worked for me:
string chromeDriverDirectory = "C:\\temp\\2.37";
var options = new ChromeOptions();
options.AddArgument("-no-sandbox");
driver = new ChromeDriver(chromeDriverDirectory, options,
TimeSpan.FromMinutes(2));
Selenium version 3.11, ChromeDriver 2.37
The official documentation of Dockerfile best practices does a great job explaining the differences. Dockerfile best practices
CMD:
The CMD instruction should be used to run the software contained by your image, along with any arguments. CMD should almost always be used in the form of CMD ["executable", "param1", "param2"…]
. Thus, if the image is for a service, such as Apache and Rails, you would run something like CMD ["apache2","-DFOREGROUND"]
. Indeed, this form of the instruction is recommended for any service-based image.
ENTRYPOINT:
The best use for ENTRYPOINT is to set the image’s main command, allowing that image to be run as though it was that command (and then use CMD as the default flags).
Here is a simple way to define those constants, and I'm pretty sure it's portable:
const double inf = 1.0/0.0;
const double nan = 0.0/0.0;
When I run this code:
printf("inf = %f\n", inf);
printf("-inf = %f\n", -inf);
printf("nan = %f\n", nan);
printf("-nan = %f\n", -nan);
I get:
inf = inf
-inf = -inf
nan = -nan
-nan = nan
Basically, tree conflicts arise if there is some restructure in the folder structure on the branch.
You need to delete the conflict folder and use svn clean
once.
Hope this solves your conflict.
I recently came to a similar situation where I needed to register a handler for an event only once. I found that you can safely unregister first, and then register again, even if the handler is not registered at all:
myClass.MyEvent -= MyHandler;
myClass.MyEvent += MyHandler;
Note that doing this every time you register your handler will ensure that your handler is registered only once. Sounds like a pretty good practice to me :)
Hi I'm also relatively new but I can give you basic help.
UPDATE 12.01.2016:
The bold line is the current branch.
You can also just double click a branch to use checkout.
And here some helpful links:
Below are some usage of htaccess files in server:
1) AUTHORIZATION, AUTHENTICATION: .htaccess files are often used to specify the security restrictions for the particular directory, hence the filename "access". The .htaccess file is often accompanied by an .htpasswd file which stores valid usernames and their passwords.
2) CUSTOMIZED ERROR RESPONSES: Changing the page that is shown when a server-side error occurs, for example HTTP 404 Not Found. Example : ErrorDocument 404 /notfound.html
3) REWRITING URLS: Servers often use .htaccess to rewrite "ugly" URLs to shorter and prettier ones.
4) CACHE CONTROL: .htaccess files allow a server to control User agent caching used by web browsers to reduce bandwidth usage, server load, and perceived lag.
More info : http://en.wikipedia.org/wiki/Htaccess
What you describe for the second method only gives you a 1D array:
int *board = new int[10];
This just allocates an array with 10 elements. Perhaps you meant something like this:
int **board = new int*[4];
for (int i = 0; i < 4; i++) {
board[i] = new int[10];
}
In this case, we allocate 4 int*
s and then make each of those point to a dynamically allocated array of 10 int
s.
So now we're comparing that with int* board[4];
. The major difference is that when you use an array like this, the number of "rows" must be known at compile-time. That's because arrays must have compile-time fixed sizes. You may also have a problem if you want to perhaps return this array of int*
s, as the array will be destroyed at the end of its scope.
The method where both the rows and columns are dynamically allocated does require more complicated measures to avoid memory leaks. You must deallocate the memory like so:
for (int i = 0; i < 4; i++) {
delete[] board[i];
}
delete[] board;
I must recommend using a standard container instead. You might like to use a std::array<int, std::array<int, 10> 4>
or perhaps a std::vector<std::vector<int>>
which you initialise to the appropriate size.
PYTHON 3
import urllib.request
wp = urllib.request.urlopen("http://example.com")
pw = wp.read()
print(pw)
PYTHON 2
import urllib
import sys
wp = urllib.urlopen("http://example.com")
for line in wp:
sys.stdout.write(line)
While I have tested both the Codes in respective versions.
A secure way of passing the password is to store it in .pgpass
file
Content of the .pgpass
file will be in the format:
db_host:db_port:db_name:db_user:db_pass
#Eg
localhost:5432:db1:admin:tiger
localhost:5432:db2:admin:tiger
Now, store this file in the home directory of the user with permissions u=rw (0600) or less
To find the home directory of the user, use
echo $HOME
Restrict permissions of the file
chmod 0600 /home/ubuntu/.pgpass
Based on @Jiff ZanyEditText
here is WiseEditText
with setSoftKeyListener(OnKeyListener)
package com.locopixel.seagame.ui.custom;
import java.util.Random;
import android.content.Context;
import android.graphics.Color;
import android.support.v7.widget.AppCompatEditText;
import android.util.AttributeSet;
import android.view.KeyEvent;
import android.view.inputmethod.EditorInfo;
import android.view.inputmethod.InputConnection;
import android.view.inputmethod.InputConnectionWrapper;
public class WiseEditText extends AppCompatEditText {
private Random r = new Random();
private OnKeyListener keyListener;
public WiseEditText(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
public WiseEditText(Context context, AttributeSet attrs) {
super(context, attrs);
}
public WiseEditText(Context context) {
super(context);
}
@Override
public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
return new MyInputConnection(super.onCreateInputConnection(outAttrs),
true);
}
private class MyInputConnection extends InputConnectionWrapper {
public MyInputConnection(InputConnection target, boolean mutable) {
super(target, mutable);
}
@Override
public boolean sendKeyEvent(KeyEvent event) {
if (keyListener != null) {
keyListener.onKey(WiseEditText.this,event.getKeyCode(),event);
}
return super.sendKeyEvent(event);
}
@Override
public boolean deleteSurroundingText(int beforeLength, int afterLength) {
// magic: in latest Android, deleteSurroundingText(1, 0) will be called for backspace
if (beforeLength == 1 && afterLength == 0) {
// backspace
return sendKeyEvent(new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DEL))
&& sendKeyEvent(new KeyEvent(KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DEL));
}
return super.deleteSurroundingText(beforeLength, afterLength);
}
}
public void setSoftKeyListener(OnKeyListener listener){
keyListener = listener;
}
}
I'd like to add to the other answers this pretty new solution:
If you don't want the element to become inline-block, you can do this:
.parent{
width: min-content;
}
The support is increasing fast, so when edge decides to implement it, it will be really great: http://caniuse.com/#search=intrinsic
You can use below code to find out principal (user email who logged in)
org.opensaml.saml2.core.impl.NameIDImpl principal =
(NameIDImpl) SecurityContextHolder.getContext().getAuthentication().getPrincipal();
String email = principal.getValue();
This code is written on top of SAML.
This error message is very confusing. I just fixed the other 'warnings' in my project and I really had only one (simple one):
warning C4101: 'i': unreferenced local variable
After I commented this unused i
, and compiled it, the other error went away.
you first should make sure that MySQL driver is on your system if not run this on your terminal if you are using Ubuntu or any Debian distro
sudo apt-get install mysql-client libmysqlclient-dev
and add this to your Gemfile
gem 'mysql2', '~> 0.3.16'
then run in your root directory of the project
bundle install
after that you can add the mysql config to config/database.yml as the previous answers
See Documentation
The static import declaration is analogous to the normal import declaration. Where the normal import declaration imports classes from packages, allowing them to be used without package qualification, the static import declaration imports static members from classes, allowing them to be used without class qualification.
So when should you use static import? Very sparingly! Only use it when you'd otherwise be tempted to declare local copies of constants, or to abuse inheritance (the Constant Interface Antipattern). In other words, use it when you require frequent access to static members from one or two classes. If you overuse the static import feature, it can make your program unreadable and unmaintainable, polluting its namespace with all the static members you import. Readers of your code (including you, a few months after you wrote it) will not know which class a static member comes from. Importing all of the static members from a class can be particularly harmful to readability; if you need only one or two members, import them individually. Used appropriately, static import can make your program more readable, by removing the boilerplate of repetition of class names.
Create Proc[usp_mquestions]
(
@title nvarchar(500), --0
@tags nvarchar(max), --1
@category nvarchar(200), --2
@ispoll char(1), --3
@descriptions nvarchar(max), --4
)
AS
BEGIN TRY
BEGIN
DECLARE @message varchar(1000);
DECLARE @tempid bigint;
IF((SELECT count(id) from [xyz] WHERE title=@title)>0)
BEGIN
SELECT 'record already existed.';
END
ELSE
BEGIN
if @id=0
begin
select @tempid =id from [xyz] where id=@id;
if @tempid is null
BEGIN
INSERT INTO xyz
(entrydate,updatedate)
VALUES
(GETDATE(),GETDATE())
SET @tempid=@@IDENTITY;
END
END
ELSE
BEGIN
set @tempid=@id
END
if @tempid>0
BEGIN
-- Updation of table begin--
UPDATE tab_questions
set title=@title, --0
tags=@tags, --1
category=@category, --2
ispoll=@ispoll, --3
descriptions=@descriptions, --4
status=@status, --5
WHERE id=@tempid ; --9 ;
IF @id=0
BEGIN
SET @message= 'success:Record added successfully:'+ convert(varchar(10), @tempid)
END
ELSE
BEGIN
SET @message= 'success:Record updated successfully.:'+ convert(varchar(10), @tempid)
END
END
ELSE
BEGIN
SET @message= 'failed:invalid request:'+convert(varchar(10), @tempid)
END
END
END
END TRY
BEGIN CATCH
SET @message='failed:'+ ERROR_MESSAGE();
END CATCH
SELECT @message;
It’s very simple, it just advertises a string which contains a few characters conforming to Apple’s iBeacon standard. you can refer the Link http://glimwormbeacons.com/learn/what-makes-an-ibeacon-an-ibeacon/
Well, the basic premise here is: no, it is not secure yet.
Basically, you can't run crypto in JavaScript: JavaScript Crypto Considered Harmful.
The problem is that you can't reliably get the crypto code into the browser, and even if you could, JS isn't designed to let you run it securely. So until browsers have a cryptographic container (which Encrypted Media Extensions provide, but are being rallied against for their DRM purposes), it will not be possible to do securely.
As far as a "Better way", there isn't one right now. Your only alternative is to store the data in plain text, and hope for the best. Or don't store the information at all. Either way.
Either that, or if you need that sort of security, and you need local storage, create a custom application...
ActiveRecord::Type::Boolean.new.type_cast_from_user
does this according to Rails' internal mappings ConnectionAdapters::Column::TRUE_VALUES
and ConnectionAdapters::Column::FALSE_VALUES
:
[3] pry(main)> ActiveRecord::Type::Boolean.new.type_cast_from_user("true")
=> true
[4] pry(main)> ActiveRecord::Type::Boolean.new.type_cast_from_user("false")
=> false
[5] pry(main)> ActiveRecord::Type::Boolean.new.type_cast_from_user("T")
=> true
[6] pry(main)> ActiveRecord::Type::Boolean.new.type_cast_from_user("F")
=> false
[7] pry(main)> ActiveRecord::Type::Boolean.new.type_cast_from_user("yes")
DEPRECATION WARNING: You attempted to assign a value which is not explicitly `true` or `false` ("yes") to a boolean column. Currently this value casts to `false`. This will change to match Ruby's semantics, and will cast to `true` in Rails 5. If you would like to maintain the current behavior, you should explicitly handle the values you would like cast to `false`. (called from <main> at (pry):7)
=> false
[8] pry(main)> ActiveRecord::Type::Boolean.new.type_cast_from_user("no")
DEPRECATION WARNING: You attempted to assign a value which is not explicitly `true` or `false` ("no") to a boolean column. Currently this value casts to `false`. This will change to match Ruby's semantics, and will cast to `true` in Rails 5. If you would like to maintain the current behavior, you should explicitly handle the values you would like cast to `false`. (called from <main> at (pry):8)
=> false
So you could make your own to_b
(or to_bool
or to_boolean
) method in an initializer like this:
class String
def to_b
ActiveRecord::Type::Boolean.new.type_cast_from_user(self)
end
end
This works for me (Excel 2013):
Public Sub StartExeWithArgument()
Dim strProgramName As String
Dim strArgument As String
strProgramName = "C:\Program Files\Test\foobar.exe"
strArgument = "/G"
Call Shell("""" & strProgramName & """ """ & strArgument & """", vbNormalFocus)
End Sub
With inspiration from here https://stackoverflow.com/a/3448682.
int foo::i = 0;
Is the correct syntax for initializing the variable, but it must go in the source file (.cpp) rather than in the header.
Because it is a static variable the compiler needs to create only one copy of it. You have to have a line "int foo:i" some where in your code to tell the compiler where to put it otherwise you get a link error. If that is in a header you will get a copy in every file that includes the header, so get multiply defined symbol errors from the linker.
I'm not really sure if this adds anything but,
Caller saved means that the caller has to save the registers because they will be clobbered in the call and have no choice but to be left in a clobbered state after the call returns (for instance, the return value being in eax
for cdecl. It makes no sense for the return value to be restored to the value before the call by the callee, because it is a return value).
Callee saved means that the callee has to save the registers and then restore them at the end of the call because they have the guarantee to the caller of containing the same values after the function returns, and it is possible to restore them, even if they are clobbered at some point during the call.
The issue with the above definition though is that for instance on Wikipedia cdecl, it says eax
, ecx
and edx
are caller saved and rest are callee saved, this suggests that the caller must save all 3 of these registers, when it might not if none of these registers were used by the caller in the first place. In which case caller 'saved' becomes a misnomer, but 'call clobbered' still correctly applies. This is the same with 'the rest' being called callee saved. It implies that all other x86 registers will be saved and restored by the callee when this is not the case if some of the registers are never used in the call anyway. With cdecl, eax:edx
may be used to return a 64 bit value. I'm not sure why ecx
is also caller saved if needed, but it is.
Inf
is infinity, it's a "bigger than all the other numbers" number. Try subtracting anything you want from it, it doesn't get any smaller. All numbers are < Inf
. -Inf
is similar, but smaller than everything.
NaN
means not-a-number. If you try to do a computation that just doesn't make sense, you get NaN
. Inf - Inf
is one such computation. Usually NaN
is used to just mean that some data is missing.
Your best bet is to review the Java Swing tutorials, specifically the tutorial on Buttons.
The short code snippet is:
jBtnDrawCircle.addActionListener( /*class that implements ActionListener*/ );
Short and sweet :). what I believe in.
int PERMISSION_ALL = 1;
String[] PERMISSIONS = {Manifest.permission.CAMERA, Manifest.permission.WRITE_EXTERNAL_STORAGE}; // List of permissions required
public void askPermission()
{
for (String permission : PERMISSIONS) {
if (ActivityCompat.checkSelfPermission(this, permission) != PackageManager.PERMISSION_GRANTED) {
requestPermissions(PERMISSIONS, PERMISSION_ALL);
return;
}
}
}
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions,
int[] grantResults) {
switch (requestCode) {
case 1:{
if(grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED && grantResults[1] == PackageManager.PERMISSION_GRANTED){
//Do your work.
} else {
Toast.makeText(this, "Until you grant the permission, we cannot proceed further", Toast.LENGTH_SHORT).show();
}
return;
}
}
API is code based integration while web service is message based integration with interoperable standards having a contract such as WSDL.
One more way to do this is using "System.Linq.Dynamic" library. You can get this library from Nuget. No need of any custom implementations or sortable List :)
using System.Linq.Dynamic;
private bool sortAscending = false;
private void dataGridView_ColumnHeaderMouseClick ( object sender, DataGridViewCellMouseEventArgs e )
{
if ( sortAscending )
dataGridView.DataSource = list.OrderBy ( dataGridView.Columns [ e.ColumnIndex ].DataPropertyName ).ToList ( );
else
dataGridView.DataSource = list.OrderBy ( dataGridView.Columns [ e.ColumnIndex ].DataPropertyName ).Reverse ( ).ToList ( );
sortAscending = !sortAscending;
}
jQuery Version
JavaScript (modified from a script I found on someone's site - I just can't find the site again, so I can't give the person credit):
$(document).ready(function() {
$("#bookmarkme").click(function() {
if (window.sidebar) { // Mozilla Firefox Bookmark
window.sidebar.addPanel(location.href,document.title,"");
} else if(window.external) { // IE Favorite
window.external.AddFavorite(location.href,document.title); }
else if(window.opera && window.print) { // Opera Hotlist
this.title=document.title;
return true;
}
});
});
HTML:
<a id="bookmarkme" href="#" rel="sidebar" title="bookmark this page">Bookmark This Page</a>
IE will show an error if you don't run it off a server (it doesn't allow JavaScript bookmarks via JavaScript when viewing it as a file://...
).
For Eclipse
A good way to add external JARs to your Android project or any Java project is:
libs
in your project's root folderlibs
folderNow right click on the Jar file and then select Build Path > Add to Build Path, which will create a folder called 'Referenced Libraries' within your project
By doing this, you will not lose your libraries that are being referenced on your hard drive whenever you transfer your project to another computer.
For Android Studio
Please Note : If you are using 3rd party libraries then it is better to use transitive dependencies where Gradle script automatically downloads the JAR and the dependency JAR when gradle script run.
Ex : compile 'com.google.android.gms:play-services-ads:9.4.0'
Read more about Gradle Dependency Mangement
An IntPtr is an integer which is the same size as a pointer.
You can use IntPtr to store a pointer value in a non-pointer type. This feature is important in .NET since using pointers is highly error prone and therefore illegal in most contexts. By allowing the pointer value to be stored in a "safe" data type, plumbing between unsafe code segments may be implemented in safer high-level code -- or even in a .NET language that doesn't directly support pointers.
The size of IntPtr is platform-specific, but this detail rarely needs to be considered, since the system will automatically use the correct size.
The name "IntPtr" is confusing -- something like Handle
might have been more appropriate. My initial guess was that "IntPtr" was a pointer to an integer. The MSDN documentation of IntPtr goes into somewhat cryptic detail without ever providing much insight about the meaning of the name.
An IntPtr
is a pointer with two limitations:
In other words, an IntPtr
is just like a void*
-- but with the extra feature that it can (but shouldn't) be used for basic pointer arithmetic.
In order to dereference an IntPtr
, you can either cast it to a true pointer (an operation which can only be performed in "unsafe" contexts) or you can pass it to a helper routine such as those provided by the InteropServices.Marshal
class. Using the Marshal
class gives the illusion of safety since it doesn't require you to be in an explicit "unsafe" context. However, it doesn't remove the risk of crashing which is inherent in using pointers.
Use max width and max height. It will keep the aspect ratio
#container img
{
max-width: 250px;
max-height: 250px;
}
You can use lftp interactively in a shell script so the password not saved in .bash_history or similar by doing the following:
vi test_script.sh
Add the following to your file:
#!/bin/sh
HOST=<yourhostname>
USER=<someusername>
PASSWD=<yourpasswd>
cd <base directory for your put file>
lftp<<END_SCRIPT
open sftp://$HOST
user $USER $PASSWD
put local-file.name
bye
END_SCRIPT
And write/quit the vi editor after you edit the host, user, pass, and directory for your put file typing :wq
.Then make your script executable chmod +x test_script.sh
and execute it ./test_script.sh
.
If you want to display more column values without an aggregation function use GROUPING SETS
instead of ROLLUP
:
SELECT
Type = ISNULL(Type, 'Total'),
SomeIntColumn = ISNULL(SomeIntColumn, 0),
TotalSales = SUM(TotalSales)
FROM atable
GROUP BY GROUPING SETS ((Type, SomeIntColumn ), ())
ORDER BY SomeIntColumn --Displays summary row as the first row in query result
You can do it in one line by converting your lists to set
s and using set.difference
:
item_list = ['item', 5, 'foo', 3.14, True]
list_to_remove = ['item', 5, 'foo']
final_list = list(set(item_list) - set(list_to_remove))
Would give you the following output:
final_list = [3.14, True]
Note: this will remove duplicates in your input list and the elements in the output can be in any order (because set
s don't preserve order). It also requires all elements in both of your lists to be hashable.
rtrim(lastname)+','+rtrim(firstname) as [Person Name]
from Table
the result will show lastname,firstname as one column header !
There are already so many good answers on this thread! I am going to post this to help anybody trying to do this automatically! To automatically remove unused imports for the whole project this article was really helpful to me.
In the article the author explains it like this:
Make a stand alone tslint file that has the following in it:
{
"extends": ["tslint-etc"],
"rules": {
"no-unused-declaration": true
}
}
Then run the following command to fix the imports:
tslint --config tslint-imports.json --fix --project .
Consider fixing any other errors it throws. (I did)
Then check the project works by building it:
ng build
or
ng build name_of_project --configuration=production
End: If it builds correctly, you have successfully removed imports automatically!
NOTE: This only removes unnecessary imports. It does not provide the other features that VS Code does when using one of the commands previously mentioned.
Yes that is correct. "Boolean variables only have two possible values: true (1) and false (0)." cpp tutorial on boolean values
You can use the HTML5 <mark>
tag.
HTML:
<h1><mark>The Last Will and Testament of Eric Jones</mark></h1>
CSS:
mark
{
background-color: green;
}
Try this:
<script type="text/javascript">
function test()
{
if($('input#field').length==0)
{
$('<input type="button" id="field"/>').appendTo('body');
}
}
</script>
There's no difference, in fact map
is implemented in C as rb_ary_collect
and enum_collect
(eg. there is a difference between map
on an array and on any other enum, but no difference between map
and collect
).
Why do both map
and collect
exist in Ruby? The map
function has many naming conventions in different languages. Wikipedia provides an overview:
The map function originated in functional programming languages but is today supported (or may be defined) in many procedural, object oriented, and multi-paradigm languages as well: In C++'s Standard Template Library, it is called
transform
, in C# (3.0)'s LINQ library, it is provided as an extension method calledSelect
. Map is also a frequently used operation in high level languages such as Perl, Python and Ruby; the operation is calledmap
in all three of these languages. Acollect
alias for map is also provided in Ruby (from Smalltalk) [emphasis mine]. Common Lisp provides a family of map-like functions; the one corresponding to the behavior described here is calledmapcar
(-car indicating access using the CAR operation).
Ruby provides an alias for programmers from the Smalltalk world to feel more at home.
Why is there a different implementation for arrays and enums? An enum is a generalized iteration structure, which means that there is no way in which Ruby can predict what the next element can be (you can define infinite enums, see Prime for an example). Therefore it must call a function to get each successive element (typically this will be the each
method).
Arrays are the most common collection so it is reasonable to optimize their performance. Since Ruby knows a lot about how arrays work it doesn't have to call each
but can only use simple pointer manipulation which is significantly faster.
Similar optimizations exist for a number of Array methods like zip
or count
.
I've just solved this problem on a site I'm working on, and thought I would share it in the hope it helps someone.
My solution takes the distance from the footer to the top of the page - if the user has scrolled further than this, it pulls the sidebar back up with a negative margin.
$(window).scroll(() => {
// Distance from top of document to top of footer.
topOfFooter = $('#footer').position().top;
// Distance user has scrolled from top, adjusted to take in height of sidebar (570 pixels inc. padding).
scrollDistanceFromTopOfDoc = $(document).scrollTop() + 570;
// Difference between the two.
scrollDistanceFromTopOfFooter = scrollDistanceFromTopOfDoc - topOfFooter;
// If user has scrolled further than footer,
// pull sidebar up using a negative margin.
if (scrollDistanceFromTopOfDoc > topOfFooter) {
$('#cart').css('margin-top', 0 - scrollDistanceFromTopOfFooter);
} else {
$('#cart').css('margin-top', 0);
}
});
Thought about using the test to pass in the vars? Something like:
Test input would be something like:
{
"TABLE_NAME": "MyDevTable",
"PARTITION_KEY": "REGION",
"SORT_KEY": "COUNTRY"
}
Adjusted your code to accept the inputs:
const AWS = require('aws-sdk');
const docClient = new AWS.DynamoDB.DocumentClient({ apiVersion: '2012-08-10' });
exports.handler = async (event) => {
const TABLE_NAME = event.TABLE_NAME;
const PARTITION_KEY = event.PARTITION_KEY;
const SORT_KEY = event.SORT_KEY;
let params = {
TableName: TABLE_NAME,
};
console.log(`keys: ${PARTITION_KEY} ${SORT_KEY}`);
let items = [];
let data = await docClient.scan(params).promise();
items = [...items, ...data.Items];
while (typeof data.LastEvaluatedKey != 'undefined') {
params.ExclusiveStartKey = data.LastEvaluatedKey;
data = await docClient.scan(params).promise();
items = [...items, ...data.Items];
}
let leftItems = items.length;
let group = [];
let groupNumber = 0;
console.log('Total items to be deleted', leftItems);
for (const i of items) {
// console.log(`item: ${i[PARTITION_KEY] } ${i[SORT_KEY]}`);
const deleteReq = {DeleteRequest: {Key: {},},};
deleteReq.DeleteRequest.Key[PARTITION_KEY] = i[PARTITION_KEY];
deleteReq.DeleteRequest.Key[SORT_KEY] = i[SORT_KEY];
// console.log(`DeleteRequest: ${JSON.stringify(deleteReq)}`);
group.push(deleteReq);
leftItems--;
if (group.length === 25 || leftItems < 1) {
groupNumber++;
console.log(`Batch ${groupNumber} to be deleted.`);
const params = {
RequestItems: {
[TABLE_NAME]: group,
},
};
await docClient.batchWrite(params).promise();
console.log(
`Batch ${groupNumber} processed. Left items: ${leftItems}`
);
// reset
group = [];
}
}
const response = {
statusCode: 200,
// Uncomment below to enable CORS requests
headers: {
"Access-Control-Allow-Origin": "*"
},
body: JSON.stringify('Hello from Lambda!'),
};
return response;
};
I have tried to use the above robot there is a need to add a delay :( also you cannot debug or do something else because you lose the focus :(
//open upload window upload.click();
//put path to your image in a clipboard
StringSelection ss = new StringSelection(file.getAbsoluteFile());
Toolkit.getDefaultToolkit().getSystemClipboard().setContents(ss, null);
//imitate mouse events like ENTER, CTRL+C, CTRL+V
Robot robot = new Robot();
robot.delay(250);
robot.keyPress(KeyEvent.VK_ENTER);
robot.keyRelease(KeyEvent.VK_ENTER);
robot.keyPress(KeyEvent.VK_CONTROL);
robot.keyPress(KeyEvent.VK_V);
robot.keyRelease(KeyEvent.VK_V);
robot.keyRelease(KeyEvent.VK_CONTROL);
robot.keyPress(KeyEvent.VK_ENTER);
robot.delay(50);
robot.keyRelease(KeyEvent.VK_ENTER);
You could use the NumberFormatter class with its parse
method.
You can exchange this local variable for a global, it would be easier.
DROP PROCEDURE IF EXISTS ABC;
DELIMITER $$
CREATE PROCEDURE ABC()
BEGIN
SET @a = 0;
simple_loop: LOOP
SET @a=@a+1;
select @a;
IF @a=5 THEN
LEAVE simple_loop;
END IF;
END LOOP simple_loop;
END $$
Notice that '10' is the representation of the base in that base:
10 is 2(decimal) in base-2
10 is 3(decimal) in base-3
...
10 is 10(decimal) in base-10
...
10 is 16(decimal) in base-16 (hexadecimal)
...
10 is 1024(decimal) in base-1024
...and so on
You can accomplish this by setting this on the container:
ul {
display: flex;
flex-wrap: wrap;
}
And on the child you set this:
li:nth-child(2n) {
flex-basis: 100%;
}
ul {
display: flex;
flex-wrap: wrap;
list-style: none;
}
li:nth-child(4n) {
flex-basis: 100%;
}
_x000D_
<ul>
<li>1</li>
<li>2</li>
<li>3</li>
<li>4</li>
</ul>
_x000D_
This causes the child to make up 100% of the container width before any other calculation. Since the container is set to break in case there is not enough space it does so before and after this child. So you could use an empty div element to force the wrap between the element before and after it.
In AndroidManifest.xml
I changed here the first activity to be MainActivity4 instead of MainActivity:
Before:
<activity android:name=".MainActivity" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".MainActivity2" />
<activity android:name=".MainActivity3" />
<activity android:name=".MainActivity4" />
<activity android:name=".MainActivity5" />
<activity android:name=".MainActivity6"/>
After:
<activity android:name=".MainActivity" />
<activity android:name=".MainActivity2" />
<activity android:name=".MainActivity3" />
<activity android:name=".MainActivity4" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".MainActivity5" />
<activity android:name=".MainActivity6"/>
In our code we have a specific validator inherited from the BaseValidator class.
This class does the following:
This is the closest you can get to validation without actually sending the person an e-mail confirmation link.
The main distinction between the two methods is:
loc
gets rows (and/or columns) with particular labels.
iloc
gets rows (and/or columns) at integer locations.
To demonstrate, consider a series s
of characters with a non-monotonic integer index:
>>> s = pd.Series(list("abcdef"), index=[49, 48, 47, 0, 1, 2])
49 a
48 b
47 c
0 d
1 e
2 f
>>> s.loc[0] # value at index label 0
'd'
>>> s.iloc[0] # value at index location 0
'a'
>>> s.loc[0:1] # rows at index labels between 0 and 1 (inclusive)
0 d
1 e
>>> s.iloc[0:1] # rows at index location between 0 and 1 (exclusive)
49 a
Here are some of the differences/similarities between s.loc
and s.iloc
when passed various objects:
<object> | description | s.loc[<object>] |
s.iloc[<object>] |
---|---|---|---|
0 |
single item | Value at index label 0 (the string 'd' ) |
Value at index location 0 (the string 'a' ) |
0:1 |
slice | Two rows (labels 0 and 1 ) |
One row (first row at location 0) |
1:47 |
slice with out-of-bounds end | Zero rows (empty Series) | Five rows (location 1 onwards) |
1:47:-1 |
slice with negative step | Four rows (labels 1 back to 47 ) |
Zero rows (empty Series) |
[2, 0] |
integer list | Two rows with given labels | Two rows with given locations |
s > 'e' |
Bool series (indicating which values have the property) | One row (containing 'f' ) |
NotImplementedError |
(s>'e').values |
Bool array | One row (containing 'f' ) |
Same as loc |
999 |
int object not in index | KeyError |
IndexError (out of bounds) |
-1 |
int object not in index | KeyError |
Returns last value in s |
lambda x: x.index[3] |
callable applied to series (here returning 3rd item in index) | s.loc[s.index[3]] |
s.iloc[s.index[3]] |
loc
's label-querying capabilities extend well-beyond integer indexes and it's worth highlighting a couple of additional examples.
Here's a Series where the index contains string objects:
>>> s2 = pd.Series(s.index, index=s.values)
>>> s2
a 49
b 48
c 47
d 0
e 1
f 2
Since loc
is label-based, it can fetch the first value in the Series using s2.loc['a']
. It can also slice with non-integer objects:
>>> s2.loc['c':'e'] # all rows lying between 'c' and 'e' (inclusive)
c 47
d 0
e 1
For DateTime indexes, we don't need to pass the exact date/time to fetch by label. For example:
>>> s3 = pd.Series(list('abcde'), pd.date_range('now', periods=5, freq='M'))
>>> s3
2021-01-31 16:41:31.879768 a
2021-02-28 16:41:31.879768 b
2021-03-31 16:41:31.879768 c
2021-04-30 16:41:31.879768 d
2021-05-31 16:41:31.879768 e
Then to fetch the row(s) for March/April 2021 we only need:
>>> s3.loc['2021-03':'2021-04']
2021-03-31 17:04:30.742316 c
2021-04-30 17:04:30.742316 d
loc
and iloc
work the same way with DataFrames as they do with Series. It's useful to note that both methods can address columns and rows together.
When given a tuple, the first element is used to index the rows and, if it exists, the second element is used to index the columns.
Consider the DataFrame defined below:
>>> import numpy as np
>>> df = pd.DataFrame(np.arange(25).reshape(5, 5),
index=list('abcde'),
columns=['x','y','z', 8, 9])
>>> df
x y z 8 9
a 0 1 2 3 4
b 5 6 7 8 9
c 10 11 12 13 14
d 15 16 17 18 19
e 20 21 22 23 24
Then for example:
>>> df.loc['c': , :'z'] # rows 'c' and onwards AND columns up to 'z'
x y z
c 10 11 12
d 15 16 17
e 20 21 22
>>> df.iloc[:, 3] # all rows, but only the column at index location 3
a 3
b 8
c 13
d 18
e 23
Sometimes we want to mix label and positional indexing methods for the rows and columns, somehow combining the capabilities of loc
and iloc
.
For example, consider the following DataFrame. How best to slice the rows up to and including 'c' and take the first four columns?
>>> import numpy as np
>>> df = pd.DataFrame(np.arange(25).reshape(5, 5),
index=list('abcde'),
columns=['x','y','z', 8, 9])
>>> df
x y z 8 9
a 0 1 2 3 4
b 5 6 7 8 9
c 10 11 12 13 14
d 15 16 17 18 19
e 20 21 22 23 24
We can achieve this result using iloc
and the help of another method:
>>> df.iloc[:df.index.get_loc('c') + 1, :4]
x y z 8
a 0 1 2 3
b 5 6 7 8
c 10 11 12 13
get_loc()
is an index method meaning "get the position of the label in this index". Note that since slicing with iloc
is exclusive of its endpoint, we must add 1 to this value if we want row 'c' as well.
Binary search: Binary search can also be used to find the index of the array element in an array. But the binary search can only be used if the array is sorted. Java provides us with an inbuilt function which can be found in the Arrays library of Java which will rreturn the index if the element is present, else it returns -1. The complexity will be O(log n). Below is the implementation of Binary search.
public static int findIndex(int arr[], int t) {
int index = Arrays.binarySearch(arr, t);
return (index < 0) ? -1 : index;
}
Can you use default android Crop functionality?
Here is my code
private void performCrop(Uri picUri) {
try {
Intent cropIntent = new Intent("com.android.camera.action.CROP");
// indicate image type and Uri
cropIntent.setDataAndType(picUri, "image/*");
// set crop properties here
cropIntent.putExtra("crop", true);
// indicate aspect of desired crop
cropIntent.putExtra("aspectX", 1);
cropIntent.putExtra("aspectY", 1);
// indicate output X and Y
cropIntent.putExtra("outputX", 128);
cropIntent.putExtra("outputY", 128);
// retrieve data on return
cropIntent.putExtra("return-data", true);
// start the activity - we handle returning in onActivityResult
startActivityForResult(cropIntent, PIC_CROP);
}
// respond to users whose devices do not support the crop action
catch (ActivityNotFoundException anfe) {
// display an error message
String errorMessage = "Whoops - your device doesn't support the crop action!";
Toast toast = Toast.makeText(this, errorMessage, Toast.LENGTH_SHORT);
toast.show();
}
}
declare:
final int PIC_CROP = 1;
at top.
In onActivity result method, writ following code:
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == PIC_CROP) {
if (data != null) {
// get the returned data
Bundle extras = data.getExtras();
// get the cropped bitmap
Bitmap selectedBitmap = extras.getParcelable("data");
imgView.setImageBitmap(selectedBitmap);
}
}
}
It is pretty easy for me to implement and also shows darken areas.
Updating the accepted answer (can't comment yet). As of 1/12/16 using the demo jsfiddle in chrome, switch-immediate is the fastest solution.
Results: Time resolution: 1.33
25ms "if-immediate" 150878146
29ms "if-indirect" 150878146
24ms "switch-immediate" 150878146
128ms "switch-range" 150878146
45ms "switch-range2" 150878146
47ms "switch-indirect-array" 150878146
43ms "array-linear-switch" 150878146
72ms "array-binary-switch" 150878146
Finished
1.04 ( 25ms) if-immediate
1.21 ( 29ms) if-indirect
1.00 ( 24ms) switch-immediate
5.33 ( 128ms) switch-range
1.88 ( 45ms) switch-range2
1.96 ( 47ms) switch-indirect-array
1.79 ( 43ms) array-linear-switch
3.00 ( 72ms) array-binary-switch
If the entire block is visible on the screen, you can use relativenumber setting. See :help relativenumber. Available in 7.3
Look in TomcatDirectory/logs/catalina.out for the logs. If the logs are too long, delete the catalina.out file and rerun the app.
You can use lapply
to pass each column to str_length
, then cbind
it to your original data.frame
...
library(stringr)
out <- lapply( df , str_length )
df <- cbind( df , out )
# col1 col2 col1 col2
#1 abc adf qqwe 3 8
#2 abcd d 4 1
#3 a e 1 1
#4 abcdefg f 7 1
If you have a string and you know the index you want to put the two variables in the string you can use:
string temp = temp.Substring(0,index) + textbox1.Text + ":" + textbox2.Text +temp.Substring(index);
But if it is a simple line you can use it this way:
string temp = string.Format("your text goes here {0} rest of the text goes here : {1} , textBox1.Text , textBox2.Text ) ;"
If your ajax response are containing html form inputs for instance, than this would be great:
$(document).on("change", 'input[type=radio][name=fieldLoadedFromAjax]', function(event) {
if (this.value == 'Yes') {
// do something here
} else if (this.value == 'No') {
// do something else here.
} else {
console.log('The new input field from an ajax response has this value: '+ this.value);
}
});
Adding some actual references to W3 docs that authoritatively explain the role of the 'name' attribute on form elements. (For what it's worth, I arrived here while exploring exactly how Stripe.js works to implement safe interaction with payment gateway Stripe. In particular, what causes a form input element to get submitted back to the server, or prevents it from being submitted?)
The following W3 docs are relevent:
HTML 4: https://www.w3.org/TR/html401/interact/forms.html#control-name Section 17.2 Controls
HTML 5: https://www.w3.org/TR/html5/forms.html#form-submission-0 and https://www.w3.org/TR/html5/forms.html#constructing-the-form-data-set Section 4.10.22.4 Constructing the form data set.
As explained therein, an input element will be submitted by the browser if and only if it has a valid 'name' attribute.
As others have noted, the 'id' attribute uniquely identifies DOM elements, but is not involved in normal form submission. (Though 'id' or other attributes can of course be used by javascript to obtain form values, which javascript could then use for AJAX submissions and so on.)
One oddity regarding previous answers/commenters concern about id's values and name's values being in the same namespace. So far as I can tell from the specs, this applied to some deprecated uses of the name attribute (not on form elements). For example https://www.w3.org/TR/html5/obsolete.html:
"Authors should not specify the name attribute on a elements. If the attribute is present, its value must not be the empty string and must neither be equal to the value of any of the IDs in the element's home subtree other than the element's own ID, if any, nor be equal to the value of any of the other name attributes on a elements in the element's home subtree. If this attribute is present and the element has an ID, then the attribute's value must be equal to the element's ID. In earlier versions of the language, this attribute was intended as a way to specify possible targets for fragment identifiers in URLs. The id attribute should be used instead."
Clearly in this special case there's some overlap between id and name values for 'a' tags. But this seems to be a peculiarity of processing for fragment ids, not due to general sharing of namespace of ids and names.
If you want to print XML directly onto the screen you can use TransformerFactory
URL url = new URL(urlString);
URLConnection conn = url.openConnection();
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
Document doc = builder.parse(conn.getInputStream());
TransformerFactory transformerFactory= TransformerFactory.newInstance();
Transformer xform = transformerFactory.newTransformer();
// that’s the default xform; use a stylesheet to get a real one
xform.transform(new DOMSource(doc), new StreamResult(System.out));
Maybe your code is missing this line from the Microsoft example:
MyDataAdapter.SelectCommand.CommandType = CommandType.StoredProcedure
I have the same problem and the solution was uncheck the "use ports 80 and 443" on skype advanced configuration!
JPA doesn't offer any support for derived property so you'll have to use a provider specific extension. As you mentioned, @Formula
is perfect for this when using Hibernate. You can use an SQL fragment:
@Formula("PRICE*1.155")
private float finalPrice;
Or even complex queries on other tables:
@Formula("(select min(o.creation_date) from Orders o where o.customer_id = id)")
private Date firstOrderDate;
Where id
is the id
of the current entity.
The following blog post is worth the read: Hibernate Derived Properties - Performance and Portability.
Without more details, I can't give a more precise answer but the above link should be helpful.
Try using Math.floor.
To be able to use std::unordered_map
(or one of the other unordered associative containers) with a user-defined key-type, you need to define two things:
A hash function; this must be a class that overrides operator()
and calculates the hash value given an object of the key-type. One particularly straight-forward way of doing this is to specialize the std::hash
template for your key-type.
A comparison function for equality; this is required because the hash cannot rely on the fact that the hash function will always provide a unique hash value for every distinct key (i.e., it needs to be able to deal with collisions), so it needs a way to compare two given keys for an exact match. You can implement this either as a class that overrides operator()
, or as a specialization of std::equal
, or – easiest of all – by overloading operator==()
for your key type (as you did already).
The difficulty with the hash function is that if your key type consists of several members, you will usually have the hash function calculate hash values for the individual members, and then somehow combine them into one hash value for the entire object. For good performance (i.e., few collisions) you should think carefully about how to combine the individual hash values to ensure you avoid getting the same output for different objects too often.
A fairly good starting point for a hash function is one that uses bit shifting and bitwise XOR to combine the individual hash values. For example, assuming a key-type like this:
struct Key
{
std::string first;
std::string second;
int third;
bool operator==(const Key &other) const
{ return (first == other.first
&& second == other.second
&& third == other.third);
}
};
Here is a simple hash function (adapted from the one used in the cppreference example for user-defined hash functions):
namespace std {
template <>
struct hash<Key>
{
std::size_t operator()(const Key& k) const
{
using std::size_t;
using std::hash;
using std::string;
// Compute individual hash values for first,
// second and third and combine them using XOR
// and bit shifting:
return ((hash<string>()(k.first)
^ (hash<string>()(k.second) << 1)) >> 1)
^ (hash<int>()(k.third) << 1);
}
};
}
With this in place, you can instantiate a std::unordered_map
for the key-type:
int main()
{
std::unordered_map<Key,std::string> m6 = {
{ {"John", "Doe", 12}, "example"},
{ {"Mary", "Sue", 21}, "another"}
};
}
It will automatically use std::hash<Key>
as defined above for the hash value calculations, and the operator==
defined as member function of Key
for equality checks.
If you don't want to specialize template inside the std
namespace (although it's perfectly legal in this case), you can define the hash function as a separate class and add it to the template argument list for the map:
struct KeyHasher
{
std::size_t operator()(const Key& k) const
{
using std::size_t;
using std::hash;
using std::string;
return ((hash<string>()(k.first)
^ (hash<string>()(k.second) << 1)) >> 1)
^ (hash<int>()(k.third) << 1);
}
};
int main()
{
std::unordered_map<Key,std::string,KeyHasher> m6 = {
{ {"John", "Doe", 12}, "example"},
{ {"Mary", "Sue", 21}, "another"}
};
}
How to define a better hash function? As said above, defining a good hash function is important to avoid collisions and get good performance. For a real good one you need to take into account the distribution of possible values of all fields and define a hash function that projects that distribution to a space of possible results as wide and evenly distributed as possible.
This can be difficult; the XOR/bit-shifting method above is probably not a bad start. For a slightly better start, you may use the hash_value
and hash_combine
function template from the Boost library. The former acts in a similar way as std::hash
for standard types (recently also including tuples and other useful standard types); the latter helps you combine individual hash values into one. Here is a rewrite of the hash function that uses the Boost helper functions:
#include <boost/functional/hash.hpp>
struct KeyHasher
{
std::size_t operator()(const Key& k) const
{
using boost::hash_value;
using boost::hash_combine;
// Start with a hash value of 0 .
std::size_t seed = 0;
// Modify 'seed' by XORing and bit-shifting in
// one member of 'Key' after the other:
hash_combine(seed,hash_value(k.first));
hash_combine(seed,hash_value(k.second));
hash_combine(seed,hash_value(k.third));
// Return the result.
return seed;
}
};
And here’s a rewrite that doesn’t use boost, yet uses good method of combining the hashes:
namespace std
{
template <>
struct hash<Key>
{
size_t operator()( const Key& k ) const
{
// Compute individual hash values for first, second and third
// http://stackoverflow.com/a/1646913/126995
size_t res = 17;
res = res * 31 + hash<string>()( k.first );
res = res * 31 + hash<string>()( k.second );
res = res * 31 + hash<int>()( k.third );
return res;
}
};
}
Why not you try REGEXP. Try it like this:
SELECT * FROM table WHERE interests REGEXP 'sports|pub'
In your public View getView
method change return null;
to return convertView;
.
Have a look at the documentation. You made the following mistakes.
Firstly, ps.executeQuery()
doesn't have any parameters. Instead you passed the SQL query into it.
Secondly, regarding the prepared statement, you have to use the ?
symbol if want to pass any parameters. And later bind it using
setXXX(index, value)
Here xxx stands for the data type.
Composition (If you remove "whole", “part” is also removed automatically– “Ownership”)
Create objects of your existing class inside the new class. This is called composition because the new class is composed of objects of existing classes.
Typically use normal member variables.
Can use pointer values if the composition class automatically handles allocation/deallocation responsible for creation/destruction of subclasses.
Composition in C++
#include <iostream>
using namespace std;
/********************** Engine Class ******************/
class Engine
{
int nEngineNumber;
public:
Engine(int nEngineNo);
~Engine(void);
};
Engine::Engine(int nEngineNo)
{
cout<<" Engine :: Constructor " <<endl;
}
Engine::~Engine(void)
{
cout<<" Engine :: Destructor " <<endl;
}
/********************** Car Class ******************/
class Car
{
int nCarColorNumber;
int nCarModelNumber;
Engine objEngine;
public:
Car (int, int,int);
~Car(void);
};
Car::Car(int nModelNo,int nColorNo, int nEngineNo):
nCarModelNumber(nModelNo),nCarColorNumber(nColorNo),objEngine(nEngineNo)
{
cout<<" Car :: Constructor " <<endl;
}
Car::~Car(void)
{
cout<<" Car :: Destructor " <<endl;
Car
Engine
Figure 1 : Composition
}
/********************** Bus Class ******************/
class Bus
{
int nBusColorNumber;
int nBusModelNumber;
Engine* ptrEngine;
public:
Bus(int,int,int);
~Bus(void);
};
Bus::Bus(int nModelNo,int nColorNo, int nEngineNo):
nBusModelNumber(nModelNo),nBusColorNumber(nColorNo)
{
ptrEngine = new Engine(nEngineNo);
cout<<" Bus :: Constructor " <<endl;
}
Bus::~Bus(void)
{
cout<<" Bus :: Destructor " <<endl;
delete ptrEngine;
}
/********************** Main Function ******************/
int main()
{
freopen ("InstallationDump.Log", "w", stdout);
cout<<"--------------- Start Of Program --------------------"<<endl;
// Composition using simple Engine in a car object
{
cout<<"------------- Inside Car Block ------------------"<<endl;
Car objCar (1, 2,3);
}
cout<<"------------- Out of Car Block ------------------"<<endl;
// Composition using pointer of Engine in a Bus object
{
cout<<"------------- Inside Bus Block ------------------"<<endl;
Bus objBus(11, 22,33);
}
cout<<"------------- Out of Bus Block ------------------"<<endl;
cout<<"--------------- End Of Program --------------------"<<endl;
fclose (stdout);
}
Output
--------------- Start Of Program --------------------
------------- Inside Car Block ------------------
Engine :: Constructor
Car :: Constructor
Car :: Destructor
Engine :: Destructor
------------- Out of Car Block ------------------
------------- Inside Bus Block ------------------
Engine :: Constructor
Bus :: Constructor
Bus :: Destructor
Engine :: Destructor
------------- Out of Bus Block ------------------
--------------- End Of Program --------------------
Aggregation (If you remove "whole", “Part” can exist – “ No Ownership”)
An aggregation is a specific type of composition where no ownership between the complex object and the subobjects is implied. When an aggregate is destroyed, the subobjects are not destroyed.
Typically use pointer variables/reference variable that point to an object that lives outside the scope of the aggregate class
Can use reference values that point to an object that lives outside the scope of the aggregate class
Not responsible for creating/destroying subclasses
Aggregation Code in C++
#include <iostream>
#include <string>
using namespace std;
/********************** Teacher Class ******************/
class Teacher
{
private:
string m_strName;
public:
Teacher(string strName);
~Teacher(void);
string GetName();
};
Teacher::Teacher(string strName) : m_strName(strName)
{
cout<<" Teacher :: Constructor --- Teacher Name :: "<<m_strName<<endl;
}
Teacher::~Teacher(void)
{
cout<<" Teacher :: Destructor --- Teacher Name :: "<<m_strName<<endl;
}
string Teacher::GetName()
{
return m_strName;
}
/********************** Department Class ******************/
class Department
{
private:
Teacher *m_pcTeacher;
Teacher& m_refTeacher;
public:
Department(Teacher *pcTeacher, Teacher& objTeacher);
~Department(void);
};
Department::Department(Teacher *pcTeacher, Teacher& objTeacher)
: m_pcTeacher(pcTeacher), m_refTeacher(objTeacher)
{
cout<<" Department :: Constructor " <<endl;
}
Department::~Department(void)
{
cout<<" Department :: Destructor " <<endl;
}
/********************** Main Function ******************/
int main()
{
freopen ("InstallationDump.Log", "w", stdout);
cout<<"--------------- Start Of Program --------------------"<<endl;
{
// Create a teacher outside the scope of the Department
Teacher objTeacher("Reference Teacher");
Teacher *pTeacher = new Teacher("Pointer Teacher"); // create a teacher
{
cout<<"------------- Inside Block ------------------"<<endl;
// Create a department and use the constructor parameter to pass the teacher to it.
Department cDept(pTeacher,objTeacher);
Department
Teacher
Figure 2: Aggregation
} // cDept goes out of scope here and is destroyed
cout<<"------------- Out of Block ------------------"<<endl;
// pTeacher still exists here because cDept did not destroy it
delete pTeacher;
}
cout<<"--------------- End Of Program --------------------"<<endl;
fclose (stdout);
}
Output
--------------- Start Of Program --------------------
Teacher :: Constructor --- Teacher Name :: Reference Teacher
Teacher :: Constructor --- Teacher Name :: Pointer Teacher
------------- Inside Block ------------------
Department :: Constructor
Department :: Destructor
------------- Out of Block ------------------
Teacher :: Destructor --- Teacher Name :: Pointer Teacher
Teacher :: Destructor --- Teacher Name :: Reference Teacher
--------------- End Of Program --------------------
For example, if you want to change com.example.app
to my.awesome.game
, then:
In your Project pane, click on the little gear icon ( )
Uncheck the Compact Empty Middle Packages
option
Your package directory will now be broken up into individual directories
Individually select each directory you want to rename, and:
Right-click it
Select Refactor
Click on Rename
In the pop-up dialog, click on Rename Package
instead of Rename Directory
Enter the new name and hit Refactor
Click Do Refactor in the bottom
Allow a minute to let Android Studio update all changes
Note: When renaming com
in Android Studio, it might give a warning. In such case, select Rename All
Now open your Gradle Build File (build.gradle
- Usually app
or mobile
). Update the applicationId
in the defaultConfig
to your new Package Name and Sync Gradle, if it hasn't already been updated automatically:
You may need to change the package=
attribute in your manifest.
Clean and Rebuild.
Done! Anyway, Android Studio needs to make this process a little simpler.
Below is a very simple VB.NET program that will do what you want.
It will set the buffer to 100 chars wide by 1000 chars high. It then sets the width of the window to match the buffer size.
Module ConsoleBuffer
Sub Main()
Console.WindowWidth = 100
Console.BufferWidth = 100
Console.BufferHeight = 1000
End Sub
End Module
I modified the code to first set Console.WindowWidth
and then set Console.BufferWidth
because if you try to set Console.BufferWidth
to a value less than the current Console.WindowWidth
the program will throw an exception.
This is only a sample...you should add code to handle command line parameters and error handling.
PYTHONPATH
is an environment variable/usr/lib/python2.7
on UbuntuPYTHONPATH
explicitlyIf you look at the instructions for pyopengl, you'll see that they are consistent with points 4 and 5.
Per correct answer by fargth, follows is a small code sample that might help.
First, create a class that extends WebViewClient and which is set to ignore SSL errors:
// SSL Error Tolerant Web View Client
private class SSLTolerentWebViewClient extends WebViewClient {
@Override
public void onReceivedSslError(WebView view, SslErrorHandler handler, SslError error) {
handler.proceed(); // Ignore SSL certificate errors
}
}
Then with your web view object (initiated in the OnCreate() method), set its web view client to be an instance of the override class:
mWebView.setWebViewClient(
new SSLTolerentWebViewClient()
);
DispatchQueue.global(qos: .background).async {
sleep(4)
print("Active after 4 sec, and doesn't block main")
DispatchQueue.main.async{
//do stuff in the main thread here
}
}
I've just checked and i have the same code as you and it works perferctly. The only difference is how i fill my List for the params :
I use a : ArrayList<BasicNameValuePair> params
and fill it this way :
params.add(new BasicNameValuePair("apikey", apikey);
I do not use any JSONObject to send params to the webservices.
Are you obliged to use the JSONObject ?
If you're wondering about what glob.glob has done on your system in the past and cannot add a sorted
call, the ordering will be consistent on Mac HFS+ filesystems and will be traversal order on other Unix systems. So it will likely have been deterministic unless the underlying filesystem was reorganized which can happen if files were added, removed, renamed, deleted, moved, etc...
If you're using mariadb, you have to modify the mariadb.cnf file located in /etc/mysql/conf.d/.
I supposed the stuff is the same for any other my-sql based solutions.
There are also these 'ways':
>>> dict.fromkeys(range(1, 4))
{1: None, 2: None, 3: None}
>>> dict(zip(range(1, 4), range(1, 4)))
{1: 1, 2: 2, 3: 3}
nginx or G-WAN
http://nbonvin.wordpress.com/2011/03/24/serving-small-static-files-which-server-to-use/
In Python 3.6 the fastest way is still the WouterOvermeire one. Kikohs' proposal is slower than the other two options.
import timeit
setup = '''
import pandas as pd
import numpy as np
df = pd.DataFrame(np.random.randint(32, 120, 100000).reshape(50000,2),columns=list('AB'))
df['A'] = df['A'].apply(chr)
'''
timeit.Timer('dict(zip(df.A,df.B))', setup=setup).repeat(7,500)
timeit.Timer('pd.Series(df.A.values,index=df.B).to_dict()', setup=setup).repeat(7,500)
timeit.Timer('df.set_index("A").to_dict()["B"]', setup=setup).repeat(7,500)
Results:
1.1214002349999777 s # WouterOvermeire
1.1922008498571748 s # Jeff
1.7034366211428602 s # Kikohs
In my case, I had all of the required features, but I had installed the Team Explorer version (accidentally used the wrong installer) before installing Professional.
When running the Team Explorer version, only the Blank Solution option was available.
The Team Explorer EXE was located in: "C:\Program Files (x86)\Microsoft Visual Studio\2017\TeamExplorer\Common7\IDE\devenv.exe"
Once I launched the correct EXE, Visual Studio started working as expected.
The Professional EXE was located in: "C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional\Common7\IDE\devenv.exe"
This solved my issue, and the reason was I had enterprise edition previously installed and then uninstalled and installed the professional edition. Team Explorer was not modified later when I moved to professional from enterprise edition.
You can use <br/><br/>
or
or \ \
.
have you tried line-height:1em;? I recall that that's the way to get it to center vertically.
You could use jquery to get hold of the html element that you want to load the value with.
Say for instance if your page looks something like this,
<div id="FirstDiv">
<div id="SecondDiv">
...
</div>
</div>
And if your javascript (I hope) looks something as simple as this,
function somefunction(){
var somevalue = "Data to be inserted";
$("#SecondDiv").text(somevalue);
}
I hope this is what you were looking for.
I had this problem in a Backbone project: my view contains a input and is re-rendered. Here is what happens (example for a checkbox):
The solution is to update the input rather than re-render it completely. Here is an idea of the implementation:
var MyView = Backbone.View.extend({
render: function(){
if(this.rendered){
this.update();
return;
}
this.rendered = true;
this.$el.html(tpl(this.model.toJSON()));
return this;
},
update: function(){
this.$el.find('input[type="checkbox"]').prop('checked', this.model.get('checked'));
return this;
}
});
This way you don't have to change any existing code calling render(), simply make sure update() keeps your HTML in sync and you're good to go.
<?php
$string = '`~!@#$%^&^&*()_+{}[]|\/;:"< >,.?-<h1>You .</h1><p> text</p>'."'";
$string=strip_tags($string,"");
$string = preg_replace('/[^A-Za-z0-9\s.\s-]/','',$string);
echo $string = str_replace( array( '-', '.' ), '', $string);
?>
Manifold Preprocessor implemented as a javac compiler plugin is designed exclusively for conditional compilation of Java source code. It uses familiar C/C++ style of directives: #define, #undef, #if, #elif, #else, #endif, #error. and #warning.
It has Maven and Gradle plugins.
Total number of cells in a range minus the blank cells of the same range.
=(115 - (COUNTBLANK(C2:C116)))
This counts everything in the range so, maybe not what you're looking for.
Pass 65536
to mysql_connect
as 5th parameter.
Example:
$conn = mysql_connect('localhost','username','password', true, 65536 /* here! */)
or die("cannot connect");
mysql_select_db('database_name') or die("cannot use database");
mysql_query("
INSERT INTO table1 (field1,field2) VALUES(1,2);
INSERT INTO table2 (field3,field4,field5) VALUES(3,4,5);
DELETE FROM table3 WHERE field6 = 6;
UPDATE table4 SET field7 = 7 WHERE field8 = 8;
INSERT INTO table5
SELECT t6.field11, t6.field12, t7.field13
FROM table6 t6
INNER JOIN table7 t7 ON t7.field9 = t6.field10;
-- etc
");
When you are working with mysql_fetch_* or mysql_num_rows, or mysql_affected_rows, only the first statement is valid.
For example, the following codes, the first statement is INSERT, you cannot execute mysql_num_rows and mysql_fetch_*. It is okay to use mysql_affected_rows to return how many rows inserted.
$conn = mysql_connect('localhost','username','password', true, 65536) or die("cannot connect");
mysql_select_db('database_name') or die("cannot use database");
mysql_query("
INSERT INTO table1 (field1,field2) VALUES(1,2);
SELECT * FROM table2;
");
Another example, the following codes, the first statement is SELECT, you cannot execute mysql_affected_rows. But you can execute mysql_fetch_assoc to get a key-value pair of row resulted from the first SELECT statement, or you can execute mysql_num_rows to get number of rows based on the first SELECT statement.
$conn = mysql_connect('localhost','username','password', true, 65536) or die("cannot connect");
mysql_select_db('database_name') or die("cannot use database");
mysql_query("
SELECT * FROM table2;
INSERT INTO table1 (field1,field2) VALUES(1,2);
");
Try:
UPDATE table1
SET CalculatedColumn = ( SELECT [Calculated Column]
FROM table2
WHERE table1.commonfield = [common field])
WHERE BatchNO = '110'
I guess this is also possible like this?
var movies = _db.Movies.TakeWhile(p => p.Genres.Any(x => listOfGenres.Contains(x));
Is "TakeWhile" worse than "Where" in sense of performance or clarity?
select Col.name Columnname,prop.Value Description, tbl.name Tablename, sch.name schemaname
from sys.columns col left outer join sys.extended_properties prop
on prop.major_id = col.object_id and prop.minor_id = col.column_id
inner join sys.tables tbl on col.object_id = tbl.object_id
Left outer join sys.schemas sch on sch.schema_id = tbl.schema_id
The way i did in Android Studio which is also based on IntelliJ was like this. In commit dialog, I reverted the change for workspace.xml, then it was moved to unversioned file. After that I deleted this from commit dialog. Now it won't appear in the changelist. Note that my gitignore was already including .idea/workspace.xml
Just having final
will have the intended effect.
final int x = 5;
...
x = 10; // this will cause a compilation error because x is final
Declaring static is making it a class variable, making it accessible using the class name <ClassName>.x
first of all;
a Fragment
must be inside a FragmentActivity
, that's the first rule,
a FragmentActivity
is quite similar to a standart Activity
that you already know, besides having some Fragment oriented methods
second thing about Fragments, is that there is one important method you MUST call, wich is onCreateView
, where you inflate your layout, think of it as the setContentLayout
here is an example:
@Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { mView = inflater.inflate(R.layout.fragment_layout, container, false); return mView; }
and continu your work based on that mView, so to find a View
by id, call mView.findViewById(..);
for the FragmentActivity
part:
the xml part "must" have a FrameLayout
in order to inflate a fragment in it
<FrameLayout android:id="@+id/content_frame" android:layout_width="match_parent" android:layout_height="match_parent" > </FrameLayout>
as for the inflation part
getSupportFragmentManager().beginTransaction().replace(R.id.content_frame, new YOUR_FRAGMENT, "TAG").commit();
begin with these, as there is tons of other stuf you must know about fragments and fragment activities, start of by reading something about it (like life cycle) at the android developer site
I remember I had the same problem a while back using WCF due the quantity of the data I was passing. I remember I changed timeouts everywhere but the problem persisted. What I finally did was open the connection as stream request, I needed to change the client and the server side, but it work that way. Since it was a stream connection, the server kept reading until the stream ended.
UPDATE tblKit
SET number = REPLACE(number, 'KIT', 'CH')
WHERE number like 'KIT%'
or simply this if you are sure that you have no values like this CKIT002
UPDATE tblKit
SET number = REPLACE(number, 'KIT', 'CH')
pytest constantly evolves and with one of the nice changes in the recent past it is now possible to simultaneously test for
Two examples from the documentation:
with pytest.raises(ValueError, match='must be 0 or None'):
raise ValueError('value must be 0 or None')
with pytest.raises(ValueError, match=r'must be \d+$'):
raise ValueError('value must be 42')
I have been using that approach in a number of projects and like it very much.
Iterations
Method 1: forEach
method
messages.forEach(function(message) {
console.log(message);
}
Method 2: for..of
method
for(let message of messages){
console.log(message);
}
Note: This method might not work with objects, such as:
let obj = { a: 'foo', b: { c: 'bar', d: 'daz' }, e: 'qux' }
Method 2: for..in
method
for(let key in messages){
console.log(messages[key]);
}
function DateDiff(b, e)
{
let
endYear = e.getFullYear(),
endMonth = e.getMonth(),
years = endYear - b.getFullYear(),
months = endMonth - b.getMonth(),
days = e.getDate() - b.getDate();
if (months < 0)
{
years--;
months += 12;
}
if (days < 0)
{
months--;
days += new Date(endYear, endMonth, 0).getDate();
}
return [years, months, days];
}
[years, months, days] = DateDiff(
new Date("October 21, 1980"),
new Date("July 11, 2017")); // 36 8 20
Swift4:
let key = "ccC2H19lDDbQDfakxcrtNMQdd0FloLGG" // length == 32
let iv = "ggGGHUiDD0Qjhuvv" // length == 16
func encryptFile(_ path: URL) -> Bool{
do{
let data = try Data.init(contentsOf: path)
let encodedData = try data.aesEncrypt(key: key, iv: iv)
try encodedData.write(to: path)
return true
}catch{
return false
}
}
func decryptFile(_ path: URL) -> Bool{
do{
let data = try Data.init(contentsOf: path)
let decodedData = try data.aesDecrypt(key: key, iv: iv)
try decodedData.write(to: path)
return true
}catch{
return false
}
}
Install CryptoSwift
import CryptoSwift
extension Data {
func aesEncrypt(key: String, iv: String) throws -> Data{
let encypted = try AES(key: key.bytes, blockMode: CBC(iv: iv.bytes), padding: .pkcs7).encrypt(self.bytes)
return Data(bytes: encypted)
}
func aesDecrypt(key: String, iv: String) throws -> Data {
let decrypted = try AES(key: key.bytes, blockMode: CBC(iv: iv.bytes), padding: .pkcs7).decrypt(self.bytes)
return Data(bytes: decrypted)
}
}
In C++ the only difference between a class
and a struct
is that members and base classes are private by default in classes, whereas they are public by default in structs.
So structs can have constructors, and the syntax is the same as for classes.
C:\>help if
Performs conditional processing in batch programs.
IF [NOT] ERRORLEVEL number command
IF [NOT] string1==string2 command
IF [NOT] EXIST filename command