// import Library
import java.io.StringReader ;
import au.com.bytecode.opencsv.CSVReader
//filename
var train_csv = "/Path/train.csv";
//read as text file
val train_rdd = sc.textFile(train_csv)
//use string reader to convert in proper format
var full_train_data = train_rdd.map{line => var csvReader = new CSVReader(new StringReader(line)) ; csvReader.readNext(); }
//declares types
type s = String
// declare case class for schema
case class trainSchema (Loan_ID :s ,Gender :s, Married :s, Dependents :s,Education :s,Self_Employed :s,ApplicantIncome :s,CoapplicantIncome :s,
LoanAmount :s,Loan_Amount_Term :s, Credit_History :s, Property_Area :s,Loan_Status :s)
//create DF RDD with custom schema
var full_train_data_with_schema = full_train_data.mapPartitionsWithIndex{(idx,itr)=> if (idx==0) itr.drop(1);
itr.toList.map(x=> trainSchema(x(0),x(1),x(2),x(3),x(4),x(5),x(6),x(7),x(8),x(9),x(10),x(11),x(12))).iterator }.toDF
An instance might be corrupted or not updated properly.
Try these Commands:
C:\>sqllocaldb stop MSSQLLocalDB
LocalDB instance "MSSQLLocalDB" stopped.
C:\>sqllocaldb delete MSSQLLocalDB
LocalDB instance "MSSQLLocalDB" deleted.
C:\>sqllocaldb create MSSQLLocalDB
LocalDB instance "MSSQLLocalDB" created with version 13.0.1601.5.
C:\>sqllocaldb start MSSQLLocalDB
LocalDB instance "MSSQLLocalDB" started.
To start redis with a config file all you need to do is specifiy the config file as an argument:
redis-server /root/config/redis.rb
Instead of using and killing PID's I would suggest creating an init script for your service
I would suggest taking a look at the Installing Redis more properly section of http://redis.io/topics/quickstart. It will walk you through setting up an init script with redis so you can just do something like service redis_server start
and service redis_server stop
to control your server.
I am not sure exactly what distro you are using, that article describes instructions for a Debian based distro. If you are are using a RHEL/Fedora distro let me know, I can provide you with instructions for the last couple of steps, the config file and most of the other steps will be the same.
It occurs when IIS is not being connected to SQL SERVER. For a solution, see this screenshot:
I resolved this by upgrading from cryptography 1.9 to 2.4.2
This happened because by mistake I removed some core file of GIT. Try this its worked for me.
re-initialize git
git init
fetch data from remote
git fetch
Now check all your changes and git status by
git status
Maximum time between connection request and a timeout error. When the client tries to make a connection, if the timeout wait limit is reached, it will stop trying and raise an error.
//delay callback function_x000D_
function delay (seconds, callback){_x000D_
setTimeout(() =>{_x000D_
console.log('The long delay ended');_x000D_
callback('Task Complete');_x000D_
}, seconds*1000);_x000D_
}_x000D_
//Execute delay function_x000D_
delay(1, res => { _x000D_
console.log(res); _x000D_
})
_x000D_
You haven't mentioned the Initial catalog
name in the connection string. Give your database name as Initial Catalog
name.
<add name ="AutoRepairSqlProvider" connectionString=
"Data Source=.\SQLEXPRESS; Initial Catalog=MyDatabase; AttachDbFilename=|DataDirectory|\AutoRepairDatabase.mdf;
Integrated Security=True;User Instance=True"/>
None of the other answers seemed correct in my case, however I found the real answer here
My id_rsa
file was already in PEM format, I just needed to add the .pem
extension to the filename.
The possible options to the openssl rsa -inform
parameter are one of: PEM
DER
A
PEM
encoded file is a plain-text encoding that looks something like:-----BEGIN RSA PRIVATE KEY----- MIGrAgEAAiEA0tlSKz5Iauj6ud3helAf5GguXeLUeFFTgHrpC3b2O20CAwEAAQIh ALeEtAIzebCkC+bO+rwNFVORb0bA9xN2n5dyTw/Ba285AhEA9FFDtx4VAxMVB2GU QfJ/2wIRANzuXKda/nRXIyRw1ArE2FcCECYhGKRXeYgFTl7ch7rTEckCEQDTMShw 8pL7M7DsTM7l3HXRAhAhIMYKQawc+Y7MNE4kQWYe -----END RSA PRIVATE KEY-----
While
DER
is a binary encoding format.
In my case, I had to uninstall pip and reinstall it. So I could install my specific version.
sudo apt-get purge --auto-remove python-pip
sudo easy_install pip
I found that commenting out the context section used to initialise the database resolved the problem. Havnt had time to find out what was wrong with the seeding statements yet, but removing the seeding resolved the problem.
Basically, ajax request as well as synchronous request sends your document cookies automatically. So, you need to set your cookie to document, not to request. However, your request is cross-domain, and things became more complicated. Basing on this answer, additionally to set document cookie, you should allow its sending to cross-domain environment:
type: "GET",
url: "http://example.com",
cache: false,
// NO setCookies option available, set cookie to document
//setCookies: "lkfh89asdhjahska7al446dfg5kgfbfgdhfdbfgcvbcbc dfskljvdfhpl",
crossDomain: true,
dataType: 'json',
xhrFields: {
withCredentials: true
},
success: function (data) {
alert(data);
});
Adding the GridView1.DataBind() to the button click event did not work for me. However, adding it to the SqlDataSource1_Updated event did though.
Protected Sub SqlDataSource1_Updated(sender As Object, e As SqlDataSourceStatusEventArgs) Handles SqlDataSource1.Updated
GridView1.DataBind()
End Sub
Using a terminal command i.e. "clear", in a script called from cron (no terminal) will trigger this error message. In your particular script, the smbmount command expects a terminal in which case the work-arounds above are appropriate.
is it possible to export without looping through all records
For a range in Excel with a large number of rows you may see some performance improvement if you create an Access.Application
object in Excel and then use it to import the Excel data into Access. The code below is in a VBA module in the same Excel document that contains the following test data
Option Explicit
Sub AccImport()
Dim acc As New Access.Application
acc.OpenCurrentDatabase "C:\Users\Public\Database1.accdb"
acc.DoCmd.TransferSpreadsheet _
TransferType:=acImport, _
SpreadSheetType:=acSpreadsheetTypeExcel12Xml, _
TableName:="tblExcelImport", _
Filename:=Application.ActiveWorkbook.FullName, _
HasFieldNames:=True, _
Range:="Folio_Data_original$A1:B10"
acc.CloseCurrentDatabase
acc.Quit
Set acc = Nothing
End Sub
Use the following Imports
Imports System.Data.SqlClient
Imports System.Data.Sql
Public SQLConn As New SqlConnection With {.ConnectionString = "Server=Desktop1[enter image description here][1];Database=Infostudio; Trusted_Connection=true;"}
I was getting the xml as a String and using xml.getBytes() and getting this error. Changing to xml.getBytes(Charset.forName("UTF-8")) worked for me.
public class XMLParser {
public static void main(String[] args){
try {
DocumentBuilder dBuilder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
Document doc = dBuilder.parse(new File("xml input"));
NodeList nl=doc.getDocumentElement().getChildNodes();
for(int k=0;k<nl.getLength();k++){
printTags((Node)nl.item(k));
}
} catch (Exception e) {/*err handling*/}
}
public static void printTags(Node nodes){
if(nodes.hasChildNodes() || nodes.getNodeType()!=3){
System.out.println(nodes.getNodeName()+" : "+nodes.getTextContent());
NodeList nl=nodes.getChildNodes();
for(int j=0;j<nl.getLength();j++)printTags(nl.item(j));
}
}
}
Recursively loop through and print out all the xml child tags in the document, in case you don't have to change the code to handle dynamic changes in xml, provided it's a well formed xml.
Here you can find Postgre example, this code run multiple sql commands (update 2 columns) within single SQL connection
public static class SQLTest
{
public static void NpgsqlCommand()
{
using (NpgsqlConnection connection = new NpgsqlConnection("Server = ; Port = ; User Id = ; " + "Password = ; Database = ;"))
{
NpgsqlCommand command1 = new NpgsqlCommand("update xy set xw = 'a' WHERE aa='bb'", connection);
NpgsqlCommand command2 = new NpgsqlCommand("update xy set xw = 'b' where bb = 'cc'", connection);
command1.Connection.Open();
command1.ExecuteNonQuery();
command2.ExecuteNonQuery();
command2.Connection.Close();
}
}
}
SQL 2008
Radim Köhler's answer works, but here is a shorter version:
select top 20 * from
(
select *,
ROW_NUMBER() OVER (ORDER BY columnid) AS ROW_NUM
from tablename
) x
where ROW_NUM>10
I tried several things, finally what worked for me was to delete (and move to trash) the .xib file in question. Then re-create it. To make things easier, I copied the stuff in the .xib temporarily to another .xib, then copied it back into the newly created one.
If input stream is not closed properly then this exception may happen. make sure : If inputstream used is not used "Before" in some way then where you are intended to read. i.e if read 2nd time from same input stream in single operation then 2nd call will get this exception. Also make sure to close input stream in finally block or something like that.
I wrote the following code to convert an image from sdcard to a Base64 encoded string to send as a JSON object.And it works great:
String filepath = "/sdcard/temp.png";
File imagefile = new File(filepath);
FileInputStream fis = null;
try {
fis = new FileInputStream(imagefile);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
Bitmap bm = BitmapFactory.decodeStream(fis);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bm.compress(Bitmap.CompressFormat.JPEG, 100 , baos);
byte[] b = baos.toByteArray();
encImage = Base64.encodeToString(b, Base64.DEFAULT);
Try This. You need pass the authentication to let the server know its a valid user. You need to import these two packages and has to include a jersy jar. If you dont want to include jersy jar then import this package
import sun.misc.BASE64Encoder;
import com.sun.jersey.core.util.Base64;
import sun.net.www.protocol.http.HttpURLConnection;
and then,
String encodedAuthorizedUser = getAuthantication("username", "password");
URL url = new URL("Your Valid Jira URL");
HttpURLConnection httpCon = (HttpURLConnection) url.openConnection();
httpCon.setRequestProperty ("Authorization", "Basic " + encodedAuthorizedUser );
public String getAuthantication(String username, String password) {
String auth = new String(Base64.encode(username + ":" + password));
return auth;
}
public async Task<HttpResponseMessage> PostFormDataAsync() //async is used for defining an asynchronous method
{
if (!Request.Content.IsMimeMultipartContent())
{
throw new HttpResponseException(HttpStatusCode.UnsupportedMediaType);
}
var fileLocation = "";
string root = HttpContext.Current.Server.MapPath("~/App_Data");
MultipartFormDataStreamProvider provider = new MultipartFormDataStreamProvider(root); //Helps in HTML file uploads to write data to File Stream
try
{
// Read the form data.
await Request.Content.ReadAsMultipartAsync(provider);
// This illustrates how to get the file names.
foreach (MultipartFileData file in provider.FileData)
{
Trace.WriteLine(file.Headers.ContentDisposition.FileName); //Gets the file name
var filePath = file.Headers.ContentDisposition.FileName.Substring(1, file.Headers.ContentDisposition.FileName.Length - 2); //File name without the path
File.Copy(file.LocalFileName, file.LocalFileName + filePath); //Save a copy for reading it
fileLocation = file.LocalFileName + filePath; //Complete file location
}
HttpResponseMessage response = Request.CreateResponse(HttpStatusCode.OK, recordStatus);
return response;
}
catch (System.Exception e)
{
return Request.CreateErrorResponse(HttpStatusCode.InternalServerError, e);
}
}
public void ReadFromExcel()
{
try
{
DataTable sheet1 = new DataTable();
OleDbConnectionStringBuilder csbuilder = new OleDbConnectionStringBuilder();
csbuilder.Provider = "Microsoft.ACE.OLEDB.12.0";
csbuilder.DataSource = fileLocation;
csbuilder.Add("Extended Properties", "Excel 12.0 Xml;HDR=YES");
string selectSql = @"SELECT * FROM [Sheet1$]";
using (OleDbConnection connection = new OleDbConnection(csbuilder.ConnectionString))
using (OleDbDataAdapter adapter = new OleDbDataAdapter(selectSql, connection))
{
connection.Open();
adapter.Fill(sheet1);
}
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
}
This simply means that either tree
, tree[otu]
, or tree[otu][0]
evaluates to None
, and as such is not subscriptable. Most likely tree[otu]
or tree[otu][0]
. Track it down with some simple debugging like this:
def Ancestors (otu,tree):
try:
tree[otu][0][0]
except TypeError:
print otu, tre[otu]
raise
#etc...
or pdb
My 2 cents
I was getting this in a docker image using alpine. The django settings referenced /dev/log
for logging to syslog. The django app and celery worker were both based on the same image. The entrypoint of the django app image was launching syslogd
on start, but the one for the celery worker was not. This was causing things like ./manage.py shell
to fail because there wouldn't be any /dev/log
. The celery worker was not failing. Instead, it was silently just ignoring the rest of the app launch, which included loading shared_task
entries from applications in the django project
string sqlCon = @"Data Source=.\SQLEXPRESS;" +
@"AttachDbFilename=|DataDirectory|\SampleDB.mdf;
Integrated Security=True;
Connect Timeout=30;
User Instance=True";
SqlConnection Con = new SqlConnection(sqlCon);
The filepath should have |DataDirectory| which actually links to "current project directory\App_Data\" or "current project directory" and get the .mdf file.....Place the .mdf in either of these places and should work in visual studio 2010.And when you use the standalone application on production system, then the current path where the executable file is, should have the .mdf file.
The real reason you were getting this error is because of the "
values in your connection string.
If you replace those with single quotes then it will work fine.
https://docs.microsoft.com/archive/blogs/rickandy/explicit-connection-string-for-ef
(Posted so others can get the fix faster than I did.)
Change the order of statments. For me, changing the block of code
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/context
http://www.springframework.org/schema/beans/spring-beans.xsd"
with
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context"
is valid.
If your are going to replace all of the connection strings with news ones for production environment, you can simply replace all connection strings with production ones using this syntax:
<configuration xmlns:xdt="http://schemas.microsoft.com/XML-Document-Transform">
<connectionStrings xdt:Transform="Replace">
<!-- production environment config --->
<add name="ApplicationServices" connectionString="data source=.\SQLEXPRESS;Integrated Security=SSPI;AttachDBFilename=|DataDirectory|\aspnetdb.mdf;User Instance=true"
providerName="System.Data.SqlClient" />
<add name="Testing1" connectionString="Data Source=test;Initial Catalog=TestDatabase;Integrated Security=True"
providerName="System.Data.SqlClient" />
</connectionStrings>
....
Information for this answer are brought from this answer and this blog post.
notice: As others explained already, this setting will apply only when application publishes not when running/debugging it (by hitting F5).
I have solved this by adding read permission to folder for application pool user (WIN SERVER 2008 R2): C:\Windows\System32\inetsrv\config
A little background: Our server has been hacked using classical error where app user had more permissions that it should (local admin).
To fix it we created new domain user that had only permissions on application folder, with min needed rights and assigned it as application pool user. than we hit in the issue and this was solution to our problems.
//xn=list of parent nodes......
foreach (XmlNode xn in xnList)
{
foreach (XmlNode child in xn.ChildNodes)
{
if (child.Name.Equals("name"))
{
name = child.InnerText;
}
if (child.Name.Equals("age"))
{
age = child.InnerText;
}
}
}
I am not very good in using sophisticated regular expressions, so I'd do such task in the following way:
files <- list.files()
dbf.files <- files[-grep(".xml", files, fixed=T)]
First line just lists all files from working dir. Second one drops everything containing ".xml" (grep returns indices of such strings in 'files' vector; subsetting with negative indices removes corresponding entries from vector). "fixed" argument for grep function is just my whim, as I usually want it to peform crude pattern matching without Perl-style fancy regexprs, which may cause surprise for me.
I'm aware that such solution simply reflects drawbacks in my education, but for a novice it may be useful =) at least it's easy.
Craig Stuntz has written an extensive (in my opinion) blog post on troubleshooting this exact error message, I personally would start there.
The following res:
(resource) references need to point to your model.
<add name="Entities" connectionString="metadata=
res://*/Models.WraithNath.co.uk.csdl|
res://*/Models.WraithNath.co.uk.ssdl|
res://*/Models.WraithNath.co.uk.msl;
Make sure each one has the name of your .edmx file after the "*/", with the "edmx" changed to the extension for that res (.csdl, .ssdl, or .msl).
It also may help to specify the assembly rather than using "//*/".
Worst case, you can check everything (a bit slower but should always find the resource) by using
<add name="Entities" connectionString="metadata=
res://*/;provider= <!-- ... -->
(I know this is old but I wanted to post this for people like me who stumble upon it in the future) I personally just use this python code to decode base64 strings:
print open("FILE-WITH-STRING", "rb").read().decode("base64")
So you can run it in a bash script like this:
python -c 'print open("FILE-WITH-STRING", "rb").read().decode("base64")' > outputfile
file -i outputfile
twneale has also pointed out an even simpler solution: base64 -d
So you can use it like this:
cat "FILE WITH STRING" | base64 -d > OUTPUTFILE
#Or You Can Do This
echo "STRING" | base64 -d > OUTPUTFILE
That will save the decoded string to outputfile
and then attempt to identify file-type using either the file
tool or you can try TrID. The following command will decode the string into a file and then use TrID to automatically identify the file's type and add the extension.
echo "STRING" | base64 -d > OUTPUTFILE; trid -ce OUTPUTFILE
I would do the folowing:
Declare separetly the enum, in it´s own file:
public enum RightEnum {
READ(100), WRITE(200), EDITOR (300);
private int value;
private RightEnum (int value) { this.value = value; }
@Override
public static Etapa valueOf(Integer value){
for( RightEnum r : RightEnum .values() ){
if ( r.getValue().equals(value))
return r;
}
return null;//or throw exception
}
public int getValue() { return value; }
}
Declare a new JPA entity named Right
@Entity
public class Right{
@Id
private Integer id;
//FIElDS
// constructor
public Right(RightEnum rightEnum){
this.id = rightEnum.getValue();
}
public Right getInstance(RightEnum rightEnum){
return new Right(rightEnum);
}
}
You will also need a converter for receiving this values (JPA 2.1 only and there´s a problem I´ll not discuss here with these enum´s to be directly persisted using the converter, so it will be a one way road only)
import mypackage.RightEnum;
import javax.persistence.AttributeConverter;
import javax.persistence.Converter;
/**
*
*
*/
@Converter(autoApply = true)
public class RightEnumConverter implements AttributeConverter<RightEnum, Integer>{
@Override //this method shoudn´t be used, but I implemented anyway, just in case
public Integer convertToDatabaseColumn(RightEnum attribute) {
return attribute.getValue();
}
@Override
public RightEnum convertToEntityAttribute(Integer dbData) {
return RightEnum.valueOf(dbData);
}
}
The Authority entity:
@Entity
@Table(name = "AUTHORITY_")
public class Authority implements Serializable {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "AUTHORITY_ID")
private Long id;
// the **Entity** to map :
private Right right;
// the **Enum** to map (not to be persisted or updated) :
@Column(name="COLUMN1", insertable = false, updatable = false)
@Convert(converter = RightEnumConverter.class)
private RightEnum rightEnum;
}
By doing this way, you can´t set directly to the enum field. However, you can set the Right field in Authority using
autorithy.setRight( Right.getInstance( RightEnum.READ ) );//for example
And if you need to compare, you can use:
authority.getRight().equals( RightEnum.READ ); //for example
Which is pretty cool, I think. It´s not totally correct, since the converter it´s not intended to be use with enum´s. Actually, the documentation says to never use it for this purpose, you should use the @Enumerated annotation instead. The problem is that there are only two enum types: ORDINAL or STRING, but the ORDINAL is tricky and not safe.
However, if it doesn´t satisfy you, you can do something a little more hacky and simpler (or not).
Let´s see.
The RightEnum:
public enum RightEnum {
READ(100), WRITE(200), EDITOR (300);
private int value;
private RightEnum (int value) {
try {
this.value= value;
final Field field = this.getClass().getSuperclass().getDeclaredField("ordinal");
field.setAccessible(true);
field.set(this, value);
} catch (Exception e) {//or use more multicatch if you use JDK 1.7+
throw new RuntimeException(e);
}
}
@Override
public static Etapa valueOf(Integer value){
for( RightEnum r : RightEnum .values() ){
if ( r.getValue().equals(value))
return r;
}
return null;//or throw exception
}
public int getValue() { return value; }
}
and the Authority entity
@Entity
@Table(name = "AUTHORITY_")
public class Authority implements Serializable {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "AUTHORITY_ID")
private Long id;
// the **Enum** to map (to be persisted or updated) :
@Column(name="COLUMN1")
@Enumerated(EnumType.ORDINAL)
private RightEnum rightEnum;
}
In this second idea, its not a perfect situation since we hack the ordinal attribute, but it´s a much smaller coding.
I think that the JPA specification should include the EnumType.ID where the enum value field should be annotated with some kind of @EnumId annotation.
This is common issue only. Even I have faced this issue. On the development machine, configured with Windows authentication, it is worked perfectly:
<add name="ShoppingCartAdminEntities" connectionString="metadata=res://*/ShoppingCartAPIModel.csdl|res://*/ShoppingCartAPIModel.ssdl|res://*/ShoppingCartAPIModel.msl;provider=System.Data.SqlClient;provider connection string="data source=.\SQlExpress;initial catalog=ShoppingCartAdmin;Integrated Security=True;multipleactiveresultsets=True;application name=EntityFramework"" providerName="System.Data.EntityClient" />
Once hosted in IIS with the same configuration, I got this error:
The underlying provider failed on Open
It was solved changing connectionString
in the configuration file:
<add name="MyEntities" connectionString="metadata=res://*/ShoppingCartAPIModel.csdl|res://*/ShoppingCartAPIModel.ssdl|res://*/ShoppingCartAPIModel.msl;provider=System.Data.SqlClient;provider connection string="data source=MACHINE_Name\SQlExpress;initial catalog=ShoppingCartAdmin;persist security info=True;user id=sa;password=notmyrealpassword;multipleactiveresultsets=True;application name=EntityFramework"" providerName="System.Data.EntityClient" />
Other common mistakes could be:
Indeed you cannot save changes inside a foreach
loop in C# using Entity Framework.
context.SaveChanges()
method acts like a commit on a regular database system (RDMS).
Just make all changes (which Entity Framework will cache) and then save all of them at once calling SaveChanges()
after the loop (outside of it), like a database commit command.
This works if you can save all changes at once.
The documentation could help you : http://java.sun.com/j2se/1.5.0/docs/api/javax/xml/parsers/DocumentBuilder.html
The method DocumentBuilder.parse(String)
takes a URI and tries to open it. If you want to directly give the content, you have to give it an InputStream
or Reader
, for example a StringReader
. ... Welcome to the Java standard levels of indirections !
Basically :
DocumentBuilder db = ...;
String xml = ...;
db.parse(new InputSource(new StringReader(xml)));
Note that if you read your XML from a file, you can directly give the File
object to DocumentBuilder.parse()
.
As a side note, this is a pattern you will encounter a lot in Java. Usually, most API work with Streams more than with Strings. Using Streams means that potentially not all the content has to be loaded in memory at the same time, which can be a great idea !
New escape string in PowerShell V3, quoted from New V3 Language Features:
Easier Reuse of Command Lines From Cmd.exe
The web is full of command lines written for Cmd.exe. These commands lines work often enough in PowerShell, but when they include certain characters, for example, a semicolon (;), a dollar sign ($), or curly braces, you have to make some changes, probably adding some quotes. This seemed to be the source of many minor headaches.
To help address this scenario, we added a new way to “escape” the parsing of command lines. If you use a magic parameter --%, we stop our normal parsing of your command line and switch to something much simpler. We don’t match quotes. We don’t stop at semicolon. We don’t expand PowerShell variables. We do expand environment variables if you use Cmd.exe syntax (e.g. %TEMP%). Other than that, the arguments up to the end of the line (or pipe, if you are piping) are passed as is. Here is an example:
PS> echoargs.exe --% %USERNAME%,this=$something{weird}
Arg 0 is <jason,this=$something{weird}>
to complete of Pit answer and for better perfromance : get all in one query and use NextResult method.
using (var sqlCon = new SqlConnection("Server=127.0.0.1;Database=MyDb;User Id=Me;Password=glop;"))
{
sqlCon.Open();
var com = sqlCon.CreateCommand();
com.CommandText = "select * from BigTable;select @@ROWCOUNT;";
using (var reader = com.ExecuteReader())
{
while(reader.read()){
//iterate code
}
int totalRow = 0 ;
reader.NextResult(); //
if(reader.read()){
totalRow = (int)reader[0];
}
}
sqlCon.Close();
}
The best way is to use fixtures.
Note: Keep in mind that fixtures do direct inserts and don't use your model so if you have callbacks that populate data you will need to find a workaround.
Use Microsoft Sysinternals Sigcheck. This sample outputs just the version:
sigcheck -q -n foo.dll
Unpacked sigcheck.exe is only 228 KB.
There's some great answers on this already. However, I thought I would chip in as some proxy servers require you to authenticate with a user Id and password. Sometimes this can be on a domain.
So, for example if your proxy server configuration is as follows:
Server: myproxyserver
Port: 8080
Username: mydomain\myusername
Password: mypassword
Then, add to your .gitconfig
file using the following command:
git config --global http.proxy http://mydomain\\myusername:mypassword@myproxyserver:8080
Don't worry about https
. As long as the specified proxy server supports http, and https, then one entry in the config file will suffice.
You can then verify that the command added the entry to your .gitconfig
file successfully by doing cat .gitconfig
:
At the end of the file you will see an entry as follows:
[http]
proxy = http://mydomain\\myusername:mypassword@myproxyserver:8080
That's it!
Make sure you declare the bean associated with the form in GET method of the associated controller and also add it in the model model.addAttribute("uploadItem", uploadItem);
which contains @RequestMapping(method = RequestMethod.GET)
annotation.
For example UploadItem.java is associated with myform.jsp and controller is SecureAreaController.java
myform.jsp contains
<form:form action="/securedArea" commandName="uploadItem" enctype="multipart/form-data"></form:form>
@RequestMapping("/securedArea")
@Controller
public class SecureAreaController {
@RequestMapping(method = RequestMethod.GET)
public String showForm(Model model) {
UploadItem uploadItem = new UploadItem(); // declareing
model.addAttribute("uploadItem", uploadItem); // adding in model
return "securedArea/upload";
}
}
As you can see I am declaring UploadItem.java in controller GET method.
If you want to use data binding you can follow this solution The following solution might be a better one to follow. the layout is in fragment_my.xml
<data>
<variable
name="listener"
type="my_package.MyListener" />
</data>
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:id="@+id/moreTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="@{() -> listener.onClick()}"
android:text="@string/login"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
And the Fragment would be as follows
class MyFragment : Fragment(), MyListener {
override fun onCreateView(
inflater: LayoutInflater,
container: ViewGroup?,
savedInstanceState: Bundle?
): View? {
return FragmentMyBinding.inflate(
inflater,
container,
false
).apply {
lifecycleOwner = viewLifecycleOwner
listener = this@MyFragment
}.root
}
override fun onClick() {
TODO("Not yet implemented")
}
}
interface MyListener{
fun onClick()
}
Do you need to parse arbitrary JSON structures, or just data that's specific to your application. If the latter, you can make it a lot lighter and more efficient by not having to generate any hash table/map structure mapping JSON keys to values; you can instead just store the data directly into struct fields or whatever.
Use this for GET values:
Request.QueryString["key"]
And this for POST values
Request.Form["key"]
Also, this will work if you don't care whether it comes from GET or POST, or the HttpContext.Items collection:
Request["key"]
Another thing to note (if you need it) is you can check the type of request by using:
Request.RequestType
Which will be the verb used to access the page (usually GET or POST). Request.IsPostBack
will usually work to check this, but only if the POST request includes the hidden fields added to the page by the ASP.NET framework.
Just a note about the popular and helpful Arthur Goldsmith answer above: If you're moving your mouse from one element to another in IE (at least until IE 9) you may have some trouble getting this to work correctly if the new element has a transparent background (which it would by default). My workaround was the give the new element a transparent background image.
Use
mytimeout = setTimeout( expression, timeout );
where expression is the script to run and timeout is the time to wait in milliseconds before it runs - this does NOT hault the script, but simply delays execution of that part until the timeout is done.
clearTimeout(mytimeout);
will reset/clear the timeout so it does not run the script in expression (like a cancel) as long as it has not yet been executed.
The command
clause does work as @Karthik says above.
As a simple example, the following service will have a -inMemory
added to its ENTRYPOINT
when docker-compose up
is run.
version: '2'
services:
local-dynamo:
build: local-dynamo
image: spud/dynamo
command: -inMemory
If you have some panels or groupboxes reset fields should be recursive.
public class Utilities
{
public static void ResetAllControls(Control form)
{
foreach (Control control in form.Controls)
{
RecursiveResetForm(control);
}
}
private void RecursiveResetForm(Control control)
{
if (control.HasChildren)
{
foreach (Control subControl in control.Controls)
{
RecursiveResetForm(subControl);
}
}
switch (control.GetType().Name)
{
case "TextBox":
TextBox textBox = (TextBox)control;
textBox.Text = null;
break;
case "ComboBox":
ComboBox comboBox = (ComboBox)control;
if (comboBox.Items.Count > 0)
comboBox.SelectedIndex = 0;
break;
case "CheckBox":
CheckBox checkBox = (CheckBox)control;
checkBox.Checked = false;
break;
case "ListBox":
ListBox listBox = (ListBox)control;
listBox.ClearSelected();
break;
case "NumericUpDown":
NumericUpDown numericUpDown = (NumericUpDown)control;
numericUpDown.Value = 0;
break;
}
}
}
I also had the same problem and able to resolve after using below command
/root/mysql-sandboxes/3320/bin/mysqld --defaults-file=/root/mysql-sandboxes/3320/my.cnf --user=root &
This might be considered one of the options. now if you wanted to load a yml file ( which did not get loaded by default on applying the above annotations) the trick is to use
@ContextConfiguration(classes= {...}, initializers={ConfigFileApplicationContextInitializer.class})
Here is a sample code
@RunWith(SpringRunner.class)
@ActiveProfiles("test")
@DirtiesContext
@ContextConfiguration(classes= {DataSourceTestConfig.class}, initializers = {ConfigFileApplicationContextInitializer.class})
public class CustomDateDeserializerTest {
private ObjectMapper objMapper;
@Before
public void setUp() {
objMapper = new ObjectMapper();
}
@Test
public void test_dateDeserialization() {
}
}
Again make sure that the setup config java file - here DataSourceTestConfig.java
contains the following property values.
@Configuration
@ActiveProfiles("test")
@TestPropertySource(properties = { "spring.config.location=classpath:application-test.yml" })
public class DataSourceTestConfig implements EnvironmentAware {
private Environment env;
@Bean
@Profile("test")
public DataSource testDs() {
HikariDataSource ds = new HikariDataSource();
boolean isAutoCommitEnabled = env.getProperty("spring.datasource.hikari.auto-commit") != null ? Boolean.parseBoolean(env.getProperty("spring.datasource.hikari.auto-commit")):false;
ds.setAutoCommit(isAutoCommitEnabled);
// Connection test query is for legacy connections
//ds.setConnectionInitSql(env.getProperty("spring.datasource.hikari.connection-test-query"));
ds.setPoolName(env.getProperty("spring.datasource.hikari.pool-name"));
ds.setDriverClassName(env.getProperty("spring.datasource.driver-class-name"));
long timeout = env.getProperty("spring.datasource.hikari.idleTimeout") != null ? Long.parseLong(env.getProperty("spring.datasource.hikari.idleTimeout")): 40000;
ds.setIdleTimeout(timeout);
long maxLifeTime = env.getProperty("spring.datasource.hikari.maxLifetime") != null ? Long.parseLong(env.getProperty("spring.datasource.hikari.maxLifetime")): 1800000 ;
ds.setMaxLifetime(maxLifeTime);
ds.setJdbcUrl(env.getProperty("spring.datasource.url"));
ds.setPoolName(env.getProperty("spring.datasource.hikari.pool-name"));
ds.setUsername(env.getProperty("spring.datasource.username"));
ds.setPassword(env.getProperty("spring.datasource.password"));
int poolSize = env.getProperty("spring.datasource.hikari.maximum-pool-size") != null ? Integer.parseInt(env.getProperty("spring.datasource.hikari.maximum-pool-size")): 10;
ds.setMaximumPoolSize(poolSize);
return ds;
}
@Bean
@Profile("test")
public JdbcTemplate testJdbctemplate() {
return new JdbcTemplate(testDs());
}
@Bean
@Profile("test")
public NamedParameterJdbcTemplate testNamedTemplate() {
return new NamedParameterJdbcTemplate(testDs());
}
@Override
public void setEnvironment(Environment environment) {
// TODO Auto-generated method stub
this.env = environment;
}
}
According to the manual this should work:
Custom key/value method:
You can include an operator in the first parameter in order to control the comparison:
$this->db->where('name !=', $name);
$this->db->where('id <', $id);
Produces: WHERE name != 'Joe' AND id < 45
Search for $this->db->where();
and look at item #2.
Note that I don't recommend a fixed IP for containers in Docker unless you're doing something that allows routing from outside to the inside of your container network (e.g. macvlan). DNS is already there for service discovery inside of the container network and supports container scaling. And outside the container network, you should use exposed ports on the host. With that disclaimer, here's the compose file you want:
version: '2'
services:
mysql:
container_name: mysql
image: mysql:latest
restart: always
environment:
- MYSQL_ROOT_PASSWORD=root
ports:
- "3306:3306"
networks:
vpcbr:
ipv4_address: 10.5.0.5
apigw-tomcat:
container_name: apigw-tomcat
build: tomcat/.
ports:
- "8080:8080"
- "8009:8009"
networks:
vpcbr:
ipv4_address: 10.5.0.6
depends_on:
- mysql
networks:
vpcbr:
driver: bridge
ipam:
config:
- subnet: 10.5.0.0/16
gateway: 10.5.0.1
If you are referring to the actual MySQL users, try:
select User from mysql.user;
If you don't mind the try-except then...
def touch_dir(folder_path):
try:
os.mkdir(folder_path)
except FileExistsError:
pass
One thing to note though, if a file exists with the same name then it won't work and will fail silently.
Check Ayende post on the topic: Combating the Select N + 1 Problem In NHibernate.
Basically, when using an ORM like NHibernate or EntityFramework, if you have a one-to-many (master-detail) relationship, and want to list all the details per each master record, you have to make N + 1 query calls to the database, "N" being the number of master records: 1 query to get all the master records, and N queries, one per master record, to get all the details per master record.
More database query calls ? more latency time ? decreased application/database performance.
However, ORMs have options to avoid this problem, mainly using JOINs.
This blog explains your problem neatly Async Best Practices.
The gist of it being you shouldn't use void as return for an async method, unless it's an async event handler, this is bad practice because it doesn't allow exceptions to be caught ;-).
Best practice would be to change the return type to Task. Also, try to code async all the way trough, make every async method call and be called from async methods. Except for a Main method in a console, which can't be async (before C# 7.1).
You will run into deadlocks with GUI and ASP.NET applications if you ignore this best practice. The deadlock occurs because these applications runs on a context that allows only one thread and won't relinquish it to the async thread. This means the GUI waits synchronously for a return, while the async method waits for the context: deadlock.
This behaviour won't happen in a console application, because it runs on context with a thread pool. The async method will return on another thread which will be scheduled. This is why a test console app will work, but the same calls will deadlock in other applications...
C++ does not have the for_each
loop feature in its syntax. You have to use c++11 or use the template function std::for_each
.
struct Function {
int input;
Function(int input): input(input) {}
void operator()(Attack& attack) {
if(attack->m_num == input) attack->makeDamage();
}
};
Function f(input);
std::for_each(m_attack.begin(), m_attack.end(), f);
I like the dynamic query way of Dave Rincon as it does not use cursors and is small and easy. Thank you Dave for sharing.
But for my needs on Azure SQL and with a "distinct" in the query, i had to modify the code like this:
Declare @SQL nvarchar(max);
-- Set SQL Variable
-- Prepare exec command for each distinctive tenantid found in Machines
SELECT @SQL = (Select distinct 'exec dbo.sp_S2_Laser_to_cache ' +
convert(varchar(8),tenantid) + ';'
from Dim_Machine
where iscurrent = 1
FOR XML PATH(''))
--for debugging print the sql
print @SQL;
--execute the generated sql script
exec sp_executesql @SQL;
I hope this helps someone...
if you are adding multiple items to the list use this:
mAdapter.notifyItemRangeInserted(startPosition, itemcount);
This notify any registered observers that the currently reflected itemCount items starting at positionStart have been newly inserted. The item previously located at positionStart and beyond can now be found starting at position positinStart+itemCount
existing item in the dataset still considered up to date.
As far as I can tell reading the ES6 Promise specification and the standard promise specification theres no clause preventing an implementation from handling this case - however its not implemented in the following libraries:
I assume the reason for them omiting multi arg resolves is to make changing order more succinct (i.e. as you can only return one value in a function it would make the control flow less intuitive) Example:
new Promise(function(resolve, reject) {
return resolve(5, 4);
})
.then(function(x,y) {
console.log(y);
return x; //we can only return 1 value here so the next then will only have 1 argument
})
.then(function(x,y) {
console.log(y);
});
2.51 * 100 = 250.999999999997
The int()
function simply truncates the number at the decimal point, giving 250. Use
int(round(2.51*100))
to get 251 as an integer. In general, floating point numbers cannot be represented exactly. One should therefore be careful of round-off errors. As mentioned, this is not a Python-specific problem. It's a recurring problem in all computer languages.
There's a much easier approach using PrintWriter (see here)
Basically all you need is:
// set up URL connection
URL urlToRequest = new URL(urlStr);
HttpURLConnection urlConnection = (HttpURLConnection)urlToRequest.openConnection();
urlConnection.setDoOutput(true);
urlConnection.setRequestMethod("POST");
urlConnection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
// write out form parameters
String postParamaters = "param1=value1¶m2=value2"
urlConnection.setFixedLengthStreamingMode(postParameters.getBytes().length);
PrintWriter out = new PrintWriter(urlConnection.getOutputStream());
out.print(postParameters);
out.close();
// connect
urlConnection.connect();
*Note : This will show popup once per browser as the data is stored in browser memory.
Try HTML localStorage.
Methods :
localStorage.getItem('key');
localStorage.setItem('key','value');
$j(document).ready(function() {
if(localStorage.getItem('popState') != 'shown'){
$j('#popup').delay(2000).fadeIn();
localStorage.setItem('popState','shown')
}
$j('#popup-close, #popup').click(function() // You are clicking the close button
{
$j('#popup').fadeOut(); // Now the pop up is hidden.
});
});
Not really. See File input 'accept' attribute - is it useful? .
Seems to me like you are updating the value of the text field in javascript. onchange
event will be triggered only when you key-in data and tab out of the text field.
One workaround is to trigger the textbox change event when modifying the textbox value from the script. See below,
$("#kat").change(function(){
alert("Hello");
});
$('<tab_cell>').click (function () {
$('#kat')
.val($(this).text()) //updating the value of the textbox
.change(); //trigger change event.
});
As a consideration to jQuery users, there is also a way to do this in a simple way using the framework. Just another way jQuery makes our lives a little easier.
var oShallowCopy = jQuery.extend({}, o);
var oDeepCopy = jQuery.extend(true, {}, o);
references :
$ ls -ld directory
ls
is the list command.
-
indicates the beginning of the command options.
l
asks for a long list which includes the permissions.
d
indicates that the list should concern the named directory itself; not its contents. If no directory name is given, the list output will pertain to the current directory.
Code from Apache Commons Lang 3.4 (JavaDoc):
public static String getStackTrace(final Throwable throwable) {
final StringWriter sw = new StringWriter();
final PrintWriter pw = new PrintWriter(sw, true);
throwable.printStackTrace(pw);
return sw.getBuffer().toString();
}
The difference with the other answers is that it uses autoFlush
on the PrintWriter
.
You can use the following to clear all the elements.
var select = document.getElementById("DropList");
var length = select.options.length;
for (i = length-1; i >= 0; i--) {
select.options[i] = null;
}
This should do the job:
const createQueryParams = params =>
Object.keys(params)
.map(k => `${k}=${encodeURI(params[k])}`)
.join('&');
Example:
const params = { name : 'John', postcode: 'W1 2DL'}
const queryParams = createQueryParams(params)
Result:
name=John&postcode=W1%202DL
I was facing such a problem, look at the picture below
and here is its HTML
<tr class="li1">
<td valign="top">1.</td>
<td colspan="5" valign="top">
<p>How to build e-book learning environment</p>
</td>
</tr>
so I fix it by changing valign Attribute in both td
tags to baseline
and it worked
hope this help you
Seems odd to be inserting a value into an automatically incrementing field.
Also, have you tried the insert() method instead of execSQL?
ContentValues insertValues = new ContentValues();
insertValues.put("Description", "Electricity");
insertValues.put("Amount", 500);
insertValues.put("Trans", 1);
insertValues.put("EntryDate", "04/06/2011");
db.insert("CashData", null, insertValues);
For docker-compose version 2 file format, you can build and tag an image for one service and then use that same built image for another service.
For my case, I want to set up an elasticsearch cluster with 2 nodes, they both need to use the same image, but configured to run differently. I also want to build my own custom elasticsearch image from my own Dockerfile. So this is what I did (docker-compose.yml
):
version: '2'
services:
es-master:
build: ./elasticsearch
image: porter/elasticsearch
ports:
- "9200:9200"
container_name: es_master
es-node:
image: porter/elasticsearch
depends_on:
- es-master
ports:
- "9200"
command: elasticsearch --discovery.zen.ping.unicast.hosts=es_master
You can see that in the first service definition es-master
, I use the build
option to build an image from the Dockerfile in ./elasticsearch
. I tag the image with the name porter/elasticsearch
with the image
option.
Then, I reference this built image in the es-node
service definition with the image
option, and also use a depends_on
to make sure the other container es-master
is built and run first.
The Collections2.filter(Collection,Predicate) method in Google's Guava library does just what you're looking for.
I managed to render the following SELECT with SQLAlchemy on both layers.
SELECT count(*) AS count_1
FROM "table"
from sqlalchemy import select, func, Integer, Table, Column, MetaData
metadata = MetaData()
table = Table("table", metadata,
Column('primary_key', Integer),
Column('other_column', Integer) # just to illustrate
)
print select([func.count()]).select_from(table)
You just subclass Query
(you have probably anyway) and provide a specialized count()
method, like this one.
from sqlalchemy.sql.expression import func
class BaseQuery(Query):
def count_star(self):
count_query = (self.statement.with_only_columns([func.count()])
.order_by(None))
return self.session.execute(count_query).scalar()
Please note that order_by(None)
resets the ordering of the query, which is irrelevant to the counting.
Using this method you can have a count(*)
on any ORM Query, that will honor all the filter
andjoin
conditions already specified.
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.regex.*;
/* Write an application that prompts the user for a String that contains at least
* five letters and at least five digits. Continuously re-prompt the user until a
* valid String is entered. Display a message indicating whether the user was
* successful or did not enter enough digits, letters, or both.
*/
public class FiveLettersAndDigits {
private static String readIn() { // read input from stdin
StringBuilder sb = new StringBuilder();
int c = 0;
try { // do not use try-with-resources. We don't want to close the stdin stream
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
while ((c = reader.read()) != 0) { // read all characters until null
// We don't want new lines, although we must consume them.
if (c != 13 && c != 10) {
sb.append((char) c);
} else {
break; // break on new line (or else the loop won't terminate)
}
}
// reader.readLine(); // get the trailing new line
} catch (IOException ex) {
System.err.println("Failed to read user input!");
ex.printStackTrace(System.err);
}
return sb.toString().trim();
}
/**
* Check the given input against a pattern
*
* @return the number of matches
*/
private static int getitemCount(String input, String pattern) {
int count = 0;
try {
Pattern p = Pattern.compile(pattern);
Matcher m = p.matcher(input);
while (m.find()) { // count the number of times the pattern matches
count++;
}
} catch (PatternSyntaxException ex) {
System.err.println("Failed to test input String \"" + input + "\" for matches to pattern \"" + pattern + "\"!");
ex.printStackTrace(System.err);
}
return count;
}
private static String reprompt() {
System.out.print("Entered input is invalid! Please enter five letters and five digits in any order: ");
String in = readIn();
return in;
}
public static void main(String[] args) {
int letters = 0, digits = 0;
String in = null;
System.out.print("Please enter five letters and five digits in any order: ");
in = readIn();
while (letters < 5 || digits < 5) { // will keep occuring until the user enters sufficient input
if (null != in && in.length() > 9) { // must be at least 10 chars long in order to contain both
// count the letters and numbers. If there are enough, this loop won't happen again.
letters = getitemCount(in, "[A-Za-z]");
digits = getitemCount(in, "[0-9]");
if (letters < 5 || digits < 5) {
in = reprompt(); // reset in case we need to go around again.
}
} else {
in = reprompt();
}
}
}
}
Before sometime I also had the same problem. I have tried replacing the .dll
file but no result. After some debugging I found the solution.
I had this in my php.ini
file:
extension_dir = "ext"
And I'm getting mbstring extension missing
error. So I tried putting the full path for the extension directory and it works for me. like:
extension_dir = "C:\php\ext"
Hope this will help.
Cheers,
listOfStuff =([a,b], [c,d], [e,f], [f,g])
for item in listOfStuff[1:3]:
print item
You have to iterate over a slice of your tuple. The 1
is the first element you need and 3
(actually 2+1) is the first element you don't need.
Elements in a list are numerated from 0:
listOfStuff =([a,b], [c,d], [e,f], [f,g])
0 1 2 3
[1:3]
takes elements 1 and 2.
purls $.params()
used without a parameter will give you a key-value object of the parameters.
jQuerys $.param()
will build a querystring from the supplied object/array.
var params = parsedUrl.param();
delete params["page"];
var newUrl = "?page=" + $(this).val() + "&" + $.param(params);
Update
I've no idea why I used delete
here...
var params = parsedUrl.param();
params["page"] = $(this).val();
var newUrl = "?" + $.param(params);
This worked for me, no jquery or select wrapper with input class, just material.js and this vanilla js:
document.addEventListener('DOMContentLoaded', function() {
var elems = document.querySelectorAll('select');
var instances = M.FormSelect.init(elems);
});
As you can tell I got the materialize css actual style and not the browsers default.
It don't create normally; you need to add it by yourself.
After adding Global.asax
by
You need to add a class
Inherit the newly generated by System.Web.HttpApplication
and copy all the method created Global.asax
to Global.cs
and also add an inherit attribute to the Global.asax file.
Your Global.asax will look like this: -
<%@ Application Language="C#" Inherits="Global" %>
Your Global.cs in App_Code
will look like this: -
public class Global : System.Web.HttpApplication
{
public Global()
{
//
// TODO: Add constructor logic here
//
}
void Application_Start(object sender, EventArgs e)
{
// Code that runs on application startup
}
/// Many other events like begin request...e.t.c, e.t.c
}
Try using a format like %d.%02d
int iAmount = 10050;
printf("The number with fake decimal point is %d.%02d", iAmount/100, iAmount%100);
Another approach is to type cast it to double before printing it using %f like this:
printf("The number with fake decimal point is %0.2f", (double)(iAmount)/100);
My 2 cents :)
[AA[i:i+SS] for i in range(len(AA))[::SS]]
Where AA is array, SS is chunk size. For example:
>>> AA=range(10,21);SS=3
>>> [AA[i:i+SS] for i in range(len(AA))[::SS]]
[[10, 11, 12], [13, 14, 15], [16, 17, 18], [19, 20]]
# or [range(10, 13), range(13, 16), range(16, 19), range(19, 21)] in py3
I would advice to check the logic of ListActivity
according to what is needed could be the best way not to lose much time
To see what the problem is, when you get the cryptic error 0 go to ... | More Tools | Developer Tools (Ctrl+Shift+I) in Chrome (on the page giving the error)
Read the red text in the log to get the true error message. If there is too much in there, right-click and Clear Console, then do your last request again.
My first problem was, I was passing in Authorization headers to my own cross-domain web service for the browser for the first time.
I already had:
Access-Control-Allow-Origin: *
But not:
Access-Control-Allow-Methods: GET, POST, PUT, DELETE
Access-Control-Allow-Headers: Authorization
in the response header of my web service.
After I added that, my error zero was gone from my own web server, as well as when running the index.html file locally without a web server, but was still giving errors in code pen.
Back to ... | More Tools | Developer Tools while getting the error in codepen, and there is clearly explained: codepen uses https, so I cannot make calls to http, as the security is lower.
I need to therefore host my web service on https.
Knowing how to get the true error message - priceless!
Simple solution:
old_cols = df.columns.values
new_cols= ['a', 'y', 'b', 'x']
df = df.reindex(columns=new_cols)
Ref: dock.docker.com
This topic provides basic information about deploying and configuring a registry
Before you can deploy a registry, you need to install Docker on the host.
Use a command like the following to start the registry container:
start_registry.sh
#!/bin/bash
docker run -d \
-p 5000:5000 \
--restart=always \
--name registry \
-v /data/registry:/var/lib/registry \
registry:2
Pull the ubuntu:16.04
image from Docker Hub.
$ docker pull ubuntu:16.04
Tag the image as localhost:5000/my-ubuntu
. This creates an additional tag for the existing image. When the first part of the tag is a hostname and port, Docker interprets this as the location of a registry, when pushing.
$ docker tag ubuntu:16.04 localhost:5000/my-ubuntu
Push the image to the local registry running at localhost:5000
:
$ docker push localhost:5000/my-ubuntu
Remove the locally-cached images. This does not remove the localhost:5000/my-ubuntu
image from your registry.
$ docker image remove ubuntu:16.04
$ docker image remove localhost:5000/my-ubuntu
Pull the localhost:5000/my-ubuntu
image from your local registry.
$ docker pull localhost:5000/my-ubuntu
According to docs.docker.com, this is very insecure and is not recommended.
Edit the daemon.json
file, whose default location is /etc/docker/daemon.json
on Linux or C:\ProgramData\docker\config\daemon.json
on Windows Server. If you use Docker for Mac
or Docker for Windows
, click Docker icon -> Preferences -> Daemon
, add in the insecure registry
.
If the daemon.json
file does not exist, create it. Assuming there are no other settings in the file, it should have the following contents:
{
"insecure-registries" : ["myregistrydomain.com:5000"]
}
With insecure registries enabled, Docker goes through the following steps:
Restart Docker for the changes to take effect.
The following command will tell you a lot of information about your java
version, including the vendor:
java -XshowSettings:properties -version
It works on Windows, Mac, and Linux.
I recommend you just use the requests module.
It is much easier than the built in http clients: http://docs.python-requests.org/en/latest/index.html
Sample usage:
r = requests.get('http://www.thepage.com', proxies={"http":"http://myproxy:3129"})
thedata = r.content
iReports Custom Fields for columns (sum, average, etc)
Right-Click on Variables and click Create Variable
Click on the new variable
a. Notice the properties on the right
Rename the variable accordingly
Change the Value Class Name to the correct Data Type
a. You can search by clicking the 3 dots
Select the correct type of calculation
Change the Expression
a. Click the little icon
b. Select the column you are looking to do the calculation for
c. Click finish
Set Initial Value Expression to 0
Set the increment type to none
Set the Reset Type (usually report)
Drag a new Text Field to stage (Usually in Last Page Footer, or Column Footer)
Select the new variable
Click finish
One approach that's both general and yields fairly-readable code is to use the filter()
function and the across()
helper functions from the {dplyr} package.
library(dplyr)
vars_to_check <- c("rnor", "cfam")
# Filter a specific list of columns to keep only non-missing entries
df %>%
filter(across(one_of(vars_to_check),
~ !is.na(.x)))
# Filter all the columns to exclude NA
df %>%
filter(across(everything(),
~ !is.na(.)))
# Filter only numeric columns
df %>%
filter(across(where(is.numeric),
~ !is.na(.)))
Similarly, there are also the variant functions in the dplyr package (filter_all
, filter_at
, filter_if
) which accomplish the same thing:
library(dplyr)
vars_to_check <- c("rnor", "cfam")
# Filter a specific list of columns to keep only non-missing entries
df %>%
filter_at(.vars = vars(one_of(vars_to_check)),
~ !is.na(.))
# Filter all the columns to exclude NA
df %>%
filter_all(~ !is.na(.))
# Filter only numeric columns
df %>%
filter_if(is.numeric,
~ !is.na(.))
You need to remove shares
as your PRIMARY KEY
OR UNIQUE_KEY
Open your Android SDK Manager and ensure that you download/install a system image for the API level you are developing with.
If the time is 11:03, then the accepted answer will print 11:3.
You could zero-pad the minutes:
"Created at {:d}:{:02d}".format(tdate.hour, tdate.minute)
Or go another way and use tdate.time()
and only take the hour/minute part:
str(tdate.time())[0:5]
If you know the viewport angle of the camera, you can use the height in pixels to determine the angle from the top to bottom of the object. Then, using the distance and arctangent calculate the height:
height = arctan(angle) * distance
To find the viewport angle, point the camera at something which is of known height, and make it exactly fill the screen. For example, point it at a ruler, and make it just far enough away that you can only barely see the ends of the ruler. Measure the distance from the camera, and then your total viewport angle is
viewportAngle = tan(ruler_length / distance)
Then, suppose your camera is 480px tall (cheap webcam), and the view angle is 20°. If you have an object onscreen which is 240px tall, then its angle is 10°. If you know it's 2 feet away, you would say 2 feet * arctan(10°) = ~4.1 inches
tall. (I think... it's 2am so this may be a little off)
I believe fcntl()
is a POSIX function. Where as ioctl()
is a standard UNIX thing. Here is a list of POSIX io. ioctl()
is a very kernel/driver/OS specific thing, but i am sure what you use works on most flavors of Unix. some other ioctl()
stuff might only work on certain OS or even certain revs of it's kernel.
When you right click on a database and click Tasks
and then click Detach Database
, it brings up a dialog with the active connections.
By clicking on the hyperlink under "Messages" you can kill the active connections.
You can then kill those connections without detaching the database.
More information here.
The interface has changed for SQL Server Management studio 2008, here are the steps (via: Tim Leung)
You are setting the html of #showresults
of whatever data
is, and then replacing it with itself, which doesn't make much sense ?
I'm guessing you where really trying to find #showresults
in the returned data, and then update the #showresults
element in the DOM with the html from the one from the ajax call :
$('#submitform').click(function () {
$.ajax({
url: "getinfo.asp",
data: {
txtsearch: $('#appendedInputButton').val()
},
type: "GET",
dataType: "html",
success: function (data) {
var result = $('<div />').append(data).find('#showresults').html();
$('#showresults').html(result);
},
error: function (xhr, status) {
alert("Sorry, there was a problem!");
},
complete: function (xhr, status) {
//$('#showresults').slideDown('slow')
}
});
});
Here is an elegant way to do similar thing. But why do partly JSON unmarshal? That doesn't make sense.
Look below at the working code. Copy and paste it.
import (
"bytes"
"encoding/json" // Encoding and Decoding Package
"fmt"
)
var messeging = `{
"say":"Hello",
"sendMsg":{
"user":"ANisus",
"msg":"Trying to send a message"
}
}`
type SendMsg struct {
User string `json:"user"`
Msg string `json:"msg"`
}
type Chat struct {
Say string `json:"say"`
SendMsg *SendMsg `json:"sendMsg"`
}
func main() {
/** Clean way to solve Json Decoding in Go */
/** Excellent solution */
var chat Chat
r := bytes.NewReader([]byte(messeging))
chatErr := json.NewDecoder(r).Decode(&chat)
errHandler(chatErr)
fmt.Println(chat.Say)
fmt.Println(chat.SendMsg.User)
fmt.Println(chat.SendMsg.Msg)
}
func errHandler(err error) {
if err != nil {
fmt.Println(err)
return
}
}
Adding to that, I have used AWS, heroku and currently using Jelastic and found -
Jelastic offers a Java and PHP cloud hosting platform. Jelastic automatically scales Java and PHP applications and allocates server resources, thus delivering true next-generation Java and PHP cloud computing. http://blog.jelastic.com/2013/04/16/elastic-beanstalk-vs-jelastic/ or http://cloud.dzone.com/articles/jelastic-vs-heroku-1
Personally I found -
Try any of them and explore yourself. Its fun :-)
In Global.asax.cs, Application_Start() method add:
DataAnnotationsModelValidatorProvider.RegisterAdapter(typeof(MyRequiredAttribute), typeof(RequiredAttributeAdapter));
Short answer for Chrome Version 29 and up:
Use a CountDownLatch:
CountDownLatch latch = new CountDownLatch(totalNumberOfTasks);
ExecutorService taskExecutor = Executors.newFixedThreadPool(4);
while(...) {
taskExecutor.execute(new MyTask());
}
try {
latch.await();
} catch (InterruptedException E) {
// handle
}
and within your task (enclose in try / finally)
latch.countDown();
If you're not doing anything particularly professional you can always use a Util class. Ex, a util class from a project for a class.
public class Util {
public Util() {}
public boolean flip(boolean bool) { return !bool; }
public void sop(String str) { System.out.println(str); }
}
then just create a Util object
Util u = new Util();
and have something for the return System.out.println( u.flip(bool) );
If you're gonna end up using the same thing over and over, use a method, and especially if it's across projects, make a Util class. Dunno what the industry standard is however. (Experienced programmers feel free to correct me)
Look at the traceback:
Traceback (most recent call last):
File "C:\Python33\lib\site-packages\bottle.py", line 821, in _cast
out = iter(out)
TypeError: 'bool' object is not iterable
Your code isn't iterating the value, but the code receiving it is.
The solution is: return an iterable. I suggest that you either convert the bool to a string (str(False)
) or enclose it in a tuple ((False,)
).
Always read the traceback: it's correct, and it's helpful.
What you're asking about is called Variable Variables. All you need to do is store your string in a variable and access it like so:
$Class = 'MyCustomClass';
$Property = 'Name';
$List = array('Name');
$Object = new $Class();
// All of these will echo the same property
echo $Object->$Property; // Evaluates to $Object->Name
echo $Object->{$List[0]}; // Use if your variable is in an array
you can create array follow the code below:
var arraymultidimensional = []
arraymultidimensional = [[value1,value2],[value3,value4],[value5,value6]];
Result:
[v1][v2] position 0
[v3][v4] position 1
[v5][v6] position 2
For add to array dinamically, use the method below:
//vectorvalue format = "[value,value,...]"
function addToArray(vectorvalue){
arraymultidimensional[arraymultidimensional.length] = vectorvalue;
}
Hope this helps. :)
PIE
makes Internet Explorer 6-9
capable of rendering several of the most useful CSS3
decoration features
................................................................................
You have to encode your email as multipart mime and then you can attach emails as attachments basically. You reference them by cid in the email.
Alternatively you could not attach them to the email and use URLs directly but most mail programs will block this as spammers use the trick to detect the liveness of email addresses.
You don't say what language but here is one example.
On a Scientific Linux 6.7 system, the man page on rsync says:
--ignore-times don't skip files that match size and time
I have two files with identical contents, but with different creation dates:
[root@windstorm ~]# ls -ls /tmp/master/usercron /tmp/new/usercron
4 -rwxrwx--- 1 root root 1595 Feb 15 03:45 /tmp/master/usercron
4 -rwxrwx--- 1 root root 1595 Feb 16 04:52 /tmp/new/usercron
[root@windstorm ~]# diff /tmp/master/usercron /tmp/new/usercron
[root@windstorm ~]# md5sum /tmp/master/usercron /tmp/new/usercron
368165347b09204ce25e2fa0f61f3bbd /tmp/master/usercron
368165347b09204ce25e2fa0f61f3bbd /tmp/new/usercron
With --size-only
, the two files are regarded the same:
[root@windstorm ~]# rsync -v --size-only -n /tmp/new/usercron /tmp/master/usercron
sent 29 bytes received 12 bytes 82.00 bytes/sec
total size is 1595 speedup is 38.90 (DRY RUN)
With --ignore-times
, the two files are regarded different:
[root@windstorm ~]# rsync -v --ignore-times -n /tmp/new/usercron /tmp/master/usercron
usercron
sent 32 bytes received 15 bytes 94.00 bytes/sec
total size is 1595 speedup is 33.94 (DRY RUN)
So it does not looks like --ignore-times
has any effect at all.
I used:
Tel: <a href="tel:+123 123456789">+123 123456789</a>
and the result is:
Tel: +123 123456789
Where "Tel:" stands for pure text and only the number is coded and clickable.
check if file exist in side the document/catchimage path :
NSString *stringPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)objectAtIndex:0];
NSString *tempName = [NSString stringWithFormat:@"%@/catchimage/%@.png",stringPath,@"file name"];
NSLog(@"%@",temName);
if([[NSFileManager defaultManager] fileExistsAtPath:temName]){
// ur code here
} else {
// ur code here**
}
How about an ECMAScript2015 option.
const a = [5, 5, 5, 2, 2, 2, 2, 2, 9, 4];
const aCount = new Map([...new Set(a)].map(
x => [x, a.filter(y => y === x).length]
));
aCount.get(5) // 3
aCount.get(2) // 5
aCount.get(9) // 1
aCount.get(4) // 1
This example passes the input array to the Set
constructor creating a collection of unique values. The spread syntax then expands these values into a new array so we can call map
and translate this into a two-dimensional array of [value, count]
pairs - i.e. the following structure:
Array [
[5, 3],
[2, 5],
[9, 1],
[4, 1]
]
The new array is then passed to the Map
constructor resulting in an iterable object:
Map {
5 => 3,
2 => 5,
9 => 1,
4 => 1
}
The great thing about a Map
object is that it preserves data-types - that is to say aCount.get(5)
will return 3
but aCount.get("5")
will return undefined
. It also allows for any value / type to act as a key meaning this solution will also work with an array of objects.
function frequencies(/* {Array} */ a){_x000D_
return new Map([...new Set(a)].map(_x000D_
x => [x, a.filter(y => y === x).length]_x000D_
));_x000D_
}_x000D_
_x000D_
let foo = { value: 'foo' },_x000D_
bar = { value: 'bar' },_x000D_
baz = { value: 'baz' };_x000D_
_x000D_
let aNumbers = [5, 5, 5, 2, 2, 2, 2, 2, 9, 4],_x000D_
aObjects = [foo, bar, foo, foo, baz, bar];_x000D_
_x000D_
frequencies(aNumbers).forEach((val, key) => console.log(key + ': ' + val));_x000D_
frequencies(aObjects).forEach((val, key) => console.log(key.value + ': ' + val));
_x000D_
Just click on "Build" on the top menu and then click on "Publish ".... Then a pop up will open and there u can define the folder which u want to save the .exe file and by clicking "Next" will allow u to set up the advanced settings... DONE!
Localization support in legacy browsers is poor. Originally, this was due to phrases in the ECMAScript
language spec that look like this:
Number.prototype.toLocaleString()
Produces a string value that represents the value of the Number formatted according to the conventions of the host environment’s current locale. This function is implementation-dependent, and it is permissible, but not encouraged, for it to return the same thing as toString.
Every localization method defined in the spec is defined as "implementation-dependent", which results in a lot of inconsistencies. In this instance, Chrome Opera and Safari would return the same thing as .toString()
. Firefox and IE will return locale formatted strings, and IE even includes a thousand separator (perfect for currency strings). Chrome was recently updated to return a thousands-separated string, though with no fixed decimal.
For modern environments, the ECMAScript Internationalization API spec, a new standard that complements the ECMAScript Language spec, provides much better support for string comparison, number formatting, and the date and time formatting; it also fixes the corresponding functions in the Language Spec. An introduction can be found here. Implementations are available in:
There is also a compatibility implementation, Intl.js, which will provide the API in environments where it doesn't already exist.
Determining the user's preferred language remains a problem since there's no specification for obtaining the current language. Each browser implements a method to obtain a language string, but this could be based on the user's operating system language or just the language of the browser:
// navigator.userLanguage for IE, navigator.language for others
var lang = navigator.language || navigator.userLanguage;
A good workaround for this is to dump the Accept-Language header from the server to the client. If formatted as a JavaScript, it can be passed to the Internationalization API constructors, which will automatically pick the best (or first-supported) locale.
In short, you have to put in a lot of the work yourself, or use a framework/library, because you cannot rely on the browser to do it for you.
Various libraries and plugins for localization:
Feel free to add/edit.
Simplyfing for the begginers:
If you want to select an element immediatly after another element you use the +
selector.
For example:
div + p
The "+" element selects all <p>
elements that are placed immediately after <div>
elements
If you want to learn more about selectors use this table
There is no way to declare global variables as you're probably imagining them in VB.NET.
What you can do (as some of the other answers have suggested) is declare everything that you want to treat as a global variable as static variables instead within one particular class:
Public Class GlobalVariables
Public Shared UserName As String = "Tim Johnson"
Public Shared UserAge As Integer = 39
End Class
However, you'll need to fully-qualify all references to those variables anywhere you want to use them in your code. In this sense, they are not the type of global variables with which you may be familiar from other languages, because they are still associated with some particular class.
For example, if you want to display a message box in your form's code with the user's name, you'll have to do something like this:
Public Class Form1: Inherits Form
Private Sub Form1_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
MessageBox.Show("Hello, " & GlobalVariables.UserName)
End Sub
End Class
You can't simply access the variable by typing UserName
outside of the class in which it is defined—you must also specify the name of the class in which it is defined.
If the practice of fully-qualifying your variables horrifies or upsets you for whatever reason, you can always import the class that contains your global variable declarations (here, GlobalVariables
) at the top of each code file (or even at the project level, in the project's Properties window). Then, you could simply reference the variables by their name.
Imports GlobalVariables
Note that this is exactly the same thing that the compiler is doing for you behind-the-scenes when you declare your global variables in a Module
, rather than a Class
. In VB.NET, which offers modules for backward-compatibility purposes with previous versions of VB, a Module
is simply a sealed static class (or, in VB.NET terms, Shared NotInheritable Class
). The IDE allows you to call members from modules without fully-qualifying or importing a reference to them. Even if you decide to go this route, it's worth understanding what is happening behind the scenes in an object-oriented language like VB.NET. I think that as a programmer, it's important to understand what's going on and what exactly your tools are doing for you, even if you decide to use them. And for what it's worth, I do not recommend this as a "best practice" because I feel that it tends towards obscurity and clean object-oriented code/design. It's much more likely that a C# programmer will understand your code if it's written as shown above than if you cram it into a module and let the compiler handle everything.
Note that like at least one other answer has alluded to, VB.NET is a fully object-oriented language. That means, among other things, that everything is an object. Even "global" variables have to be defined within an instance of a class because they are objects as well. Any time you feel the need to use global variables in an object-oriented language, that a sign you need to rethink your design. If you're just making the switch to object-oriented programming, it's more than worth your while to stop and learn some of the basic patterns before entrenching yourself any further into writing code.
input type="submit"
is the best way to have a submit button in a form. The downside of this is that you cannot put anything other than text as its value. The button element can contain other HTML elements and content.
Try putting type="submit"
instead of type="button"
in your button
element (source).
Pay particular attention however to the following from that page:
If you use the button element in an HTML form, different browsers will submit different values. Internet Explorer will submit the text between the
<button>
and</button>
tags, while other browsers will submit the content of the value attribute. Use the input element to create buttons in an HTML form.
From the documentation,
Positioning your Toast
A standard toast notification appears near the bottom of the screen, centered horizontally. You can change this position with the
setGravity(int, int, int)
method. This accepts three parameters: aGravity
constant, anx-position
offset, and ay-position
offset.For example, if you decide that the toast should appear in the top-left corner, you can set the gravity like this:
toast.setGravity(Gravity.TOP|Gravity.LEFT, 0, 0);
If you want to nudge the position to the right, increase the value of the second parameter. To nudge it down, increase the value of the last parameter.
I have used jQuery AJAX to make AJAX requests.
Check the following code:
<html>
<head>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4/jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function() {
$('#call').click(function ()
{
$.ajax({
type: "post",
url: "testme", //this is my servlet
data: "input=" +$('#ip').val()+"&output="+$('#op').val(),
success: function(msg){
$('#output').append(msg);
}
});
});
});
</script>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
</head>
<body>
input:<input id="ip" type="text" name="" value="" /><br></br>
output:<input id="op" type="text" name="" value="" /><br></br>
<input type="button" value="Call Servlet" name="Call Servlet" id="call"/>
<div id="output"></div>
</body>
Here's a variant of this answer that uses metaclasses to avoid the messy syntax, and use the typing
-style List[int]
syntax:
class template(type):
def __new__(metacls, f):
cls = type.__new__(metacls, f.__name__, (), {
'_f': f,
'__qualname__': f.__qualname__,
'__module__': f.__module__,
'__doc__': f.__doc__
})
cls.__instances = {}
return cls
def __init__(cls, f): # only needed in 3.5 and below
pass
def __getitem__(cls, item):
if not isinstance(item, tuple):
item = (item,)
try:
return cls.__instances[item]
except KeyError:
cls.__instances[item] = c = cls._f(*item)
item_repr = '[' + ', '.join(repr(i) for i in item) + ']'
c.__name__ = cls.__name__ + item_repr
c.__qualname__ = cls.__qualname__ + item_repr
c.__template__ = cls
return c
def __subclasscheck__(cls, subclass):
for c in subclass.mro():
if getattr(c, '__template__', None) == cls:
return True
return False
def __instancecheck__(cls, instance):
return cls.__subclasscheck__(type(instance))
def __repr__(cls):
import inspect
return '<template {!r}>'.format('{}.{}[{}]'.format(
cls.__module__, cls.__qualname__, str(inspect.signature(cls._f))[1:-1]
))
With this new metaclass, we can rewrite the example in the answer I link to as:
@template
def List(member_type):
class List(list):
def append(self, member):
if not isinstance(member, member_type):
raise TypeError('Attempted to append a "{0}" to a "{1}" which only takes a "{2}"'.format(
type(member).__name__,
type(self).__name__,
member_type.__name__
))
list.append(self, member)
return List
l = List[int]()
l.append(1) # ok
l.append("one") # error
This approach has some nice benefits
print(List) # <template '__main__.List[member_type]'>
print(List[int]) # <class '__main__.List[<class 'int'>, 10]'>
assert List[int] is List[int]
assert issubclass(List[int], List) # True
for localhost,the defaut port is 8080,you can test the link http://localhost:8080 in you browser.if you can see tomcat home page,your tomcat is running
I encountered the exact same problem today in a Linux server. And the reason is really simple as I didn't do make install
after make
and tried to directly call the generated npm
. Thus the PATH and everything was a mess.
So for me, the solution is just to do make install
after make
and run the npm
under .node/bin/npm
.
jsonData = """{"from": {"id": "8", "name": "Mary Pinter"}, "message": "How ARE you?", "comments": {"count": 0}, "updated_time": "2012-05-01", "created_time": "2012-05-01", "to": {"data": [{"id": "1543", "name": "Honey Pinter"}, {"name": "Joe Schmoe"}]}, "type": "status", "id": "id_7"}"""
def getTargetIds(jsonData):
data = json.loads(jsonData)
for dest in data['to']['data']:
print("to_id:", dest.get('id', 'null'))
Try it:
>>> getTargetIds(jsonData)
to_id: 1543
to_id: null
Or, if you just want to skip over values missing ids instead of printing 'null'
:
def getTargetIds(jsonData):
data = json.loads(jsonData)
for dest in data['to']['data']:
if 'id' in to_id:
print("to_id:", dest['id'])
So:
>>> getTargetIds(jsonData)
to_id: 1543
Of course in real life, you probably don't want to print
each id, but to store them and do something with them, but that's another issue.
Complete guide related to Screen sizes
JavaScript
For height:
document.body.clientHeight // Inner height of the HTML document body, including padding
// but not the horizontal scrollbar height, border, or margin
screen.height // Device screen height (i.e. all physically visible stuff)
screen.availHeight // Device screen height minus the operating system taskbar (if present)
window.innerHeight // The current document's viewport height, minus taskbars, etc.
window.outerHeight // Height the current window visibly takes up on screen
// (including taskbars, menus, etc.)
Note: When the window is maximized this will equal screen.availHeight
For width:
document.body.clientWidth // Full width of the HTML page as coded, minus the vertical scroll bar
screen.width // Device screen width (i.e. all physically visible stuff)
screen.availWidth // Device screen width, minus the operating system taskbar (if present)
window.innerWidth // The browser viewport width (including vertical scroll bar, includes padding but not border or margin)
window.outerWidth // The outer window width (including vertical scroll bar,
// toolbars, etc., includes padding and border but not margin)
Jquery
For height:
$(document).height() // Full height of the HTML page, including content you have to
// scroll to see
$(window).height() // The current document's viewport height, minus taskbars, etc.
$(window).innerHeight() // The current document's viewport height, minus taskbars, etc.
$(window).outerHeight() // The current document's viewport height, minus taskbars, etc.
For width:
$(document).width() // The browser viewport width, minus the vertical scroll bar
$(window).width() // The browser viewport width (minus the vertical scroll bar)
$(window).innerWidth() // The browser viewport width (minus the vertical scroll bar)
$(window).outerWidth() // The browser viewport width (minus the vertical scroll bar)
You can also use the NSString class methods which will also create an autoreleased instance and have more options like string formatting:
NSString *myString = [NSString stringWithString:@"abc"];
NSString *myString = [NSString stringWithFormat:@"abc %d efg", 42];
For ICS I´ve implemented your code and made a class that extends AsyncTask
. I hope you appreciate it! Thanks for your code and solution.
public class UpdateApp extends AsyncTask<String,Void,Void>{
private Context context;
public void setContext(Context contextf){
context = contextf;
}
@Override
protected Void doInBackground(String... arg0) {
try {
URL url = new URL(arg0[0]);
HttpURLConnection c = (HttpURLConnection) url.openConnection();
c.setRequestMethod("GET");
c.setDoOutput(true);
c.connect();
String PATH = "/mnt/sdcard/Download/";
File file = new File(PATH);
file.mkdirs();
File outputFile = new File(file, "update.apk");
if(outputFile.exists()){
outputFile.delete();
}
FileOutputStream fos = new FileOutputStream(outputFile);
InputStream is = c.getInputStream();
byte[] buffer = new byte[1024];
int len1 = 0;
while ((len1 = is.read(buffer)) != -1) {
fos.write(buffer, 0, len1);
}
fos.close();
is.close();
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(Uri.fromFile(new File("/mnt/sdcard/Download/update.apk")), "application/vnd.android.package-archive");
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); // without this flag android returned a intent error!
context.startActivity(intent);
} catch (Exception e) {
Log.e("UpdateAPP", "Update error! " + e.getMessage());
}
return null;
}
}
To use it, in your main activity call by this way:
atualizaApp = new UpdateApp();
atualizaApp.setContext(getApplicationContext());
atualizaApp.execute("http://serverurl/appfile.apk");
Append .done()
to your ajax request.
$.ajax({
url: "test.html",
context: document.body
}).done(function() { //use this
alert("DONE!");
});
See the JQuery Doc for .done()
Recently I have met the Xcode shows "development cannot be enabled while your device is locked, Please unlock your device and reattach. (0xE80000E2).
If your iOS device is already unlocked and connected to mac and still get the error from Xcode 8.1 after upgrading to iOS 10.1.1, then the mac is not trusted by the device.
To fix it, first disconnect device to mac and then go to iOS settings app, and open general->reset->Reset Location & Privacy.
Then connect device to mac and when prompted, set select trust the mac.
Then wait the processing symbol files within your device and mac. After it finished, you can run the project to your device. It will be working.
There are quite a few answers; some of them are a bit too much theory-heavy. I'll leave why I needed prune once so maybe the need-first/example kind of explanation is useful to someone :)
I had a folder with about 20 node directories, each having its node_modules
directory as expected.
Once you get into any project, you see each ../node_modules/module
. But you know how it is. Almost every module has dependencies, so what you are looking at is more like projectN/node_modules/moduleX/node_modules/moduleZ...
I didn't want to drown with a list with the dependency of the dependency of...
Knowing -d n
/ -depth n
, it wouldn't have helped me, as the main/first node_modules directory I wanted of each project was at a different depth, like this:
Projects/MysuperProjectName/project/node_modules/...
Projects/Whatshisname/version3/project/node_modules/...
Projects/project/node_modules/...
Projects/MysuperProjectName/testProject/november2015Copy/project/node_modules/...
[...]
How can I get the first a list of paths ending at the first node_modules
and move to the next project to get the same?
-prune
When you add -prune
, you'll still have a standard recursive search. Each "path" is analyzed, and every find gets spit out and find
keeps digging down like a good chap. But it's the digging down for more node_modules
what I didn't want.
So, the difference is that in any of those different paths, -prune
will find
to stop digging further down that particular avenue when it has found your item. In my case, the node_modules
folder.
Using the property of String
double value = 123.456789;
String.Format("{0:0.00}", value);
Note: This can be used to display only.
Using System.Math
double value = 123.456789;
System.Math.Round(value, 2);
$('body').on("click mousedown mouseup focus blur keydown change mouseup click dblclick mousemove mouseover mouseout mousewheel keydown keyup keypress textInput touchstart touchmove touchend touchcancel resize scroll zoom focus blur select change submit reset",function(e){
console.log(e);
});
I had a similar problem.
I think the problem is that when you try to enclose two or more functions that deals with an array type of variable, php will return an error.
Let's say for example this one.
$data = array('key1' => 'Robert', 'key2' => 'Pedro', 'key3' => 'Jose');
// This function returns the last key of an array (in this case it's $data)
$lastKey = array_pop(array_keys($data));
// Output is "key3" which is the last array.
// But php will return “Strict Standards: Only variables should
// be passed by reference” error.
// So, In order to solve this one... is that you try to cut
// down the process one by one like this.
$data1 = array_keys($data);
$lastkey = array_pop($data1);
echo $lastkey;
There you go!
Check out this solution. It worked for me..... Check the id of the button for which the error is raised...it may be the same in any one of the other page in your app. If yes, then change the id of them and then the app runs perfectly.
I was having two same button id's in two different XML codes....I changed the id. Now it runs perfectly!! Hope it works
private void TurnOnAutocomplete()
{
textBox.AutoCompleteMode = AutoCompleteMode.SuggestAppend;
textBox.AutoCompleteSource = AutoCompleteSource.CustomSource;
AutoCompleteStringCollection collection = new AutoCompleteStringCollection();
string[] arrayOfWowrds = new string[];
try
{
//Read in data Autocomplete list to a string[]
string[] arrayOfWowrds = new string[];
}
catch (Exception err)
{
MessageBox.Show(err.Message, "File Missing", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
collection.AddRange(arrayOFWords);
textBox.AutoCompleteCustomSource = collection;
}
You only need to call this once after you have your data needed for the autocomplete list. Once bound it stays with the textBox. You do not need to or want to call it every time the text is changed in the textBox, that will kill your program.
@echo off
setlocal enableextensions
set count=0
for %%x in (*.txt) do set /a count+=1
echo %count%
endlocal
pause
This is the best.... your variable is: %count%
NOTE: you can change (*.txt
) to any other file extension to count other files.....
To remove a project, you have to be the owner of this project, or the administrator of gitlab. Otherwise you can only see "rename project" but no "remove project".
NOTE THAT: the creator project is NOT always the owner of the project. If the project is in a project-group, and the project-group is created by another one, then the owner is the creator of the project-group by default.
You can find the owner's name of the project in the page Settings -> Members.
Implementation with Guzzle library:
use GuzzleHttp\Client;
use GuzzleHttp\RequestOptions;
$httpClient = new Client();
$response = $httpClient->post(
'https://postman-echo.com/post',
[
RequestOptions::BODY => 'POST raw request content',
RequestOptions::HEADERS => [
'Content-Type' => 'application/x-www-form-urlencoded',
],
]
);
echo(
$response->getBody()->getContents()
);
PHP CURL extension:
$curlHandler = curl_init();
curl_setopt_array($curlHandler, [
CURLOPT_URL => 'https://postman-echo.com/post',
CURLOPT_RETURNTRANSFER => true,
/**
* Specify POST method
*/
CURLOPT_POST => true,
/**
* Specify request content
*/
CURLOPT_POSTFIELDS => 'POST raw request content',
]);
$response = curl_exec($curlHandler);
curl_close($curlHandler);
echo($response);
s += "Hello world, " + "nice to see you, " + "or not.";
Those character array literals are not C++ std::strings - you need to convert them:
s += string("Hello world, ") + string("nice to see you, ") + string("or not.");
To convert ints (or any other streamable type) you can use a boost lexical_cast or provide your own function:
template <typename T>
string Str( const T & t ) {
ostringstream os;
os << t;
return os.str();
}
You can now say things like:
string s = string("The meaning is ") + Str( 42 );
You can divide column of dtype
timedelta
by np.timedelta64(1, 'D')
, but output is not int
, but float
, because NaN
values:
df_test['Difference'] = df_test['Difference'] / np.timedelta64(1, 'D')
print (df_test)
First_Date Second Date Difference
0 2016-02-09 2015-11-19 82.0
1 2016-01-06 2015-11-30 37.0
2 NaT 2015-12-04 NaN
3 2016-01-06 2015-12-08 29.0
4 NaT 2015-12-09 NaN
5 2016-01-07 2015-12-11 27.0
6 NaT 2015-12-12 NaN
7 NaT 2015-12-14 NaN
8 2016-01-06 2015-12-14 23.0
9 NaT 2015-12-15 NaN
You can use the Jenkins object to fetch the start time directly
Jenkins.getInstance().getItemByFullName(<your_job_name>).getBuildByNumber(<your_build_number>).getTime()
also answered it here: https://stackoverflow.com/a/63074829/1968948
Unfortunately SQL Developer doesn't fully honour the set echo off
command that would (appear to) solve this in SQL*Plus.
The only workaround I've found for this is to save what you're doing as a script, e.g. test.sql
with:
set echo off
spool c:\test.csv
select /*csv*/ username, user_id, created from all_users;
spool off;
And then from SQL Developer, only have a call to that script:
@test.sql
And run that as a script (F5).
Saving as a script file shouldn't be much of a hardship anyway for anything other than an ad hoc query; and running that with @
instead of opening the script and running it directly is only a bit of a pain.
A bit of searching found the same solution on the SQL Developer forum, and the development team suggest it's intentional behaviour to mimic what SQL*Plus does; you need to run a script with @
there too in order to hide the query text.
There are a number of "is methods" on strings. islower()
and isupper()
should meet your needs:
>>> 'hello'.islower()
True
>>> [m for m in dir(str) if m.startswith('is')]
['isalnum', 'isalpha', 'isdigit', 'islower', 'isspace', 'istitle', 'isupper']
Here's an example of how to use those methods to classify a list of strings:
>>> words = ['The', 'quick', 'BROWN', 'Fox', 'jumped', 'OVER', 'the', 'Lazy', 'DOG']
>>> [word for word in words if word.islower()]
['quick', 'jumped', 'the']
>>> [word for word in words if word.isupper()]
['BROWN', 'OVER', 'DOG']
>>> [word for word in words if not word.islower() and not word.isupper()]
['The', 'Fox', 'Lazy']
Create your partial view something like:
@model YourModelType
<div>
<!-- HTML to render your object -->
</div>
Then in your view use:
@Html.Partial("YourPartialViewName", Model)
If you do not want a strongly typed partial view remove the @model YourModelType
from the top of the partial view and it will default to a dynamic
type.
Update
The default view engine will search for partial views in the same folder as the view calling the partial and then in the ~/Views/Shared folder. If your partial is located in a different folder then you need to use the full path. Note the use of ~/
in the path below.
@Html.Partial("~/Views/Partials/SeachResult.cshtml", Model)
I'm surprised no one has mentioned the obvious bash
solution utilizing only while
and read
.
while read -n1 character; do
echo "$character"
done < <(echo -n "$words")
Note the use of echo -n
to avoid the extraneous newline at the end. printf
is another good option and may be more suitable for your particular needs. If you want to ignore whitespace then replace "$words"
with "${words// /}"
.
Another option is fold
. Please note however that it should never be fed into a for loop. Rather, use a while loop as follows:
while read char; do
echo "$char"
done < <(fold -w1 <<<"$words")
The primary benefit to using the external fold
command (of the coreutils package) would be brevity. You can feed it's output to another command such as xargs
(part of the findutils package) as follows:
fold -w1 <<<"$words" | xargs -I% -- echo %
You'll want to replace the echo
command used in the example above with the command you'd like to run against each character. Note that xargs
will discard whitespace by default. You can use -d '\n'
to disable that behavior.
I just tested fold
with some of the Asian characters and realized it doesn't have Unicode support. So while it is fine for ASCII needs, it won't work for everyone. In that case there are some alternatives.
I'd probably replace fold -w1
with an awk array:
awk 'BEGIN{FS=""} {for (i=1;i<=NF;i++) print $i}'
Or the grep
command mentioned in another answer:
grep -o .
FYI, I benchmarked the 3 aforementioned options. The first two were fast, nearly tying, with the fold loop slightly faster than the while loop. Unsurprisingly xargs
was the slowest... 75x slower.
Here is the (abbreviated) test code:
words=$(python -c 'from string import ascii_letters as l; print(l * 100)')
testrunner(){
for test in test_while_loop test_fold_loop test_fold_xargs test_awk_loop test_grep_loop; do
echo "$test"
(time for (( i=1; i<$((${1:-100} + 1)); i++ )); do "$test"; done >/dev/null) 2>&1 | sed '/^$/d'
echo
done
}
testrunner 100
Here are the results:
test_while_loop
real 0m5.821s
user 0m5.322s
sys 0m0.526s
test_fold_loop
real 0m6.051s
user 0m5.260s
sys 0m0.822s
test_fold_xargs
real 7m13.444s
user 0m24.531s
sys 6m44.704s
test_awk_loop
real 0m6.507s
user 0m5.858s
sys 0m0.788s
test_grep_loop
real 0m6.179s
user 0m5.409s
sys 0m0.921s
Escape the apostrophe (i.e. double-up the single quote character) in your SQL:
INSERT INTO Person
(First, Last)
VALUES
('Joe', 'O''Brien')
/\
right here
The same applies to SELECT queries:
SELECT First, Last FROM Person WHERE Last = 'O''Brien'
The apostrophe, or single quote, is a special character in SQL that specifies the beginning and end of string data. This means that to use it as part of your literal string data you need to escape
the special character. With a single quote this is typically accomplished by doubling your quote. (Two single quote characters, not double-quote instead of a single quote.)
Note: You should only ever worry about this issue when you manually edit data via a raw SQL interface since writing queries outside of development and testing should be a rare occurrence. In code there are techniques and frameworks (depending on your stack) that take care of escaping special characters, SQL injection, etc.
The first example doesn't work because you can't assign values to arrays - arrays work (sort of) like const pointers in this respect. What you can do though is copy a new value into the array:
strcpy(p.name, "Jane");
Char arrays are fine to use if you know the maximum size of the string in advance, e.g. in the first example you are 100% sure that the name will fit into 19 characters (not 20 because one character is always needed to store the terminating zero value).
Conversely, pointers are better if you don't know the possible maximum size of your string, and/or you want to optimize your memory usage, e.g. avoid reserving 512 characters for the name "John". However, with pointers you need to dynamically allocate the buffer they point to, and free it when not needed anymore, to avoid memory leaks.
Update: example of dynamically allocated buffers (using the struct definition in your 2nd example):
char* firstName = "Johnnie";
char* surname = "B. Goode";
person p;
p.name = malloc(strlen(firstName) + 1);
p.surname = malloc(strlen(surname) + 1);
p.age = 25;
strcpy(p.name, firstName);
strcpy(p.surname, surname);
printf("Name: %s; Age: %d\n",p.name,p.age);
free(p.surname);
free(p.name);
That looks like it should stop the service when you uncheck the checkbox. Are there any exceptions in the log? stopService returns a boolean indicating whether or not it was able to stop the service.
If you are starting your service by Intents, then you may want to extend IntentService instead of Service. That class will stop the service on its own when it has no more work to do.
AutoService
class AutoService extends IntentService {
private static final String TAG = "AutoService";
private Timer timer;
private TimerTask task;
public onCreate() {
timer = new Timer();
timer = new TimerTask() {
public void run()
{
System.out.println("done");
}
}
}
protected void onHandleIntent(Intent i) {
Log.d(TAG, "onHandleIntent");
int delay = 5000; // delay for 5 sec.
int period = 5000; // repeat every sec.
timer.scheduleAtFixedRate(timerTask, delay, period);
}
public boolean stopService(Intent name) {
// TODO Auto-generated method stub
timer.cancel();
task.cancel();
return super.stopService(name);
}
}
This works :) (I hope multi-browser, Firefox likes it)
li { display: inline; list-style-type: none; }_x000D_
li:after { content: ", "; }_x000D_
li:last-child:before { content: "and "; }_x000D_
li:last-child:after { content: "."; }
_x000D_
<html>_x000D_
<body>_x000D_
<ul>_x000D_
<li>One</li>_x000D_
<li>Two</li>_x000D_
<li>Three</li>_x000D_
</ul>_x000D_
</body>_x000D_
</html>
_x000D_
2>&1
is a POSIX shell construct. Here is a breakdown, token by token:
2
: "Standard error" output file descriptor.
>&
: Duplicate an Output File Descriptor operator (a variant of Output Redirection operator >
). Given [x]>&[y]
, the file descriptor denoted by x
is made to be a copy of the output file descriptor y
.
1
"Standard output" output file descriptor.
The expression 2>&1
copies file descriptor 1
to location 2
, so any output written to 2
("standard error") in the execution environment goes to the same file originally described by 1
("standard output").
Further explanation:
File Descriptor: "A per-process unique, non-negative integer used to identify an open file for the purpose of file access."
Standard output/error: Refer to the following note in the Redirection section of the shell documentation:
Open files are represented by decimal numbers starting with zero. The largest possible value is implementation-defined; however, all implementations shall support at least 0 to 9, inclusive, for use by the application. These numbers are called "file descriptors". The values 0, 1, and 2 have special meaning and conventional uses and are implied by certain redirection operations; they are referred to as standard input, standard output, and standard error, respectively. Programs usually take their input from standard input, and write output on standard output. Error messages are usually written on standard error. The redirection operators can be preceded by one or more digits (with no intervening characters allowed) to designate the file descriptor number.
DELETE TABLE1 LIN
FROM TABLE1 LIN
INNER JOIN TABLE2 LCS ON CONDITION
WHERE CONDITION
The problem doesn't seem to be with the variable but rather with the declaration of ACTInterface. Is ACTInterface declared as internal by any chance?
Use:
pandas.set_option('display.max_columns', 7)
This will force Pandas to display the 7 columns you have. Or more generally:
pandas.set_option('display.max_columns', None)
which will force it to display any number of columns.
Explanation: the default for max_columns
is 0
, which tells Pandas to display the table only if all the columns can be squeezed into the width of your console.
Alternatively, you can change the console width (in chars) from the default of 80 using e.g:
pandas.set_option('display.width', 200)
There is a getch() function in the ncurses library. You can get it by installing the ncurses-dev package.
Try to add a new "Android XML file" to, for example, the /res/layout
folder. This might cause the plugin to to regenerate the R
class.
Building up on Paul Burke's answer I faced many problems resolving external SD card's URI path as most of the suggested "built-in" functions return paths which do not get resolved to files.
However, this is my approach of his // TODO handle non-primary volumes.
String resolvedPath = "";
File[] possibleExtSdComposites = context.getExternalFilesDirs(null);
for (File f : possibleExtSdComposites) {
// Reset final path
resolvedPath = "";
// Construct list of folders
ArrayList<String> extSdSplit = new ArrayList<>(Arrays.asList(f.getPath().split("/")));
// Look for folder "<your_application_id>"
int idx = extSdSplit.indexOf(BuildConfig.APPLICATION_ID);
// ASSUMPTION: Expected to be found at depth 2 (in this case ExtSdCard's root is /storage/0000-0000/) - e.g. /storage/0000-0000/Android/data/<your_application_id>/files
ArrayList<String> hierarchyList = new ArrayList<>(extSdSplit.subList(0, idx - 2));
// Construct list containing full possible path to the file
hierarchyList.add(tail);
String possibleFilePath = TextUtils.join("/", hierarchyList);
// If file is found --> success
if (idx != -1 && new File(possibleFilePath).exists()) {
resolvedPath = possibleFilePath;
break;
}
}
if (!resolvedPath.equals("")) {
return resolvedPath;
} else {
return null;
}
Note it depends on hierarchy which might be different on every phone manufacturer - I have not tested them all (it worked well so far on Xperia Z3 API 23 and Samsung Galaxy A3 API 23).
Please confirm if it does not perform well elsewhere.
Inside my UIViewController
derived class, I am using the following inside viewDidLoad
:
UIBarButtonItem *flipButton = [[UIBarButtonItem alloc]
initWithTitle:@"Flip"
style:UIBarButtonItemStyleBordered
target:self
action:@selector(flipView:)];
self.navigationItem.rightBarButtonItem = flipButton;
[flipButton release];
This adds a button to the right hand side with the title Flip, which calls the method:
-(IBAction)flipView
This looks very much like you #3, but it is working within my code.
If you don't want to use seperate npm package body-parser, latest express (4.16+) has built-in body-parser middleware and can be used like this,
const app = express();
app.use(express.json({ limit: '100mb' }));
p.s. Not all functionalities of body parse are present in the express. Refer documentation for full usage here
Although I am commenting late. But I have used this method to do the job. Here when I am running my spring application I am providing the application yaml file via -Dspring.config.location=file:/location-to-file/config-server-vault-application.yml
which contains all of my properties
config-server-vault-application.yml
***********************************
server:
port: 8888
ssl:
trust-store: /trust-store/config-server-trust-store.jks
trust-store-password: config-server
trust-store-type: pkcs12
************************************
Java Code
************************************
@SpringBootApplication
public class ConfigServerApplication {
public static void main(String[] args) throws IOException {
setUpTrustStoreForApplication();
SpringApplication.run(ConfigServerApplication.class, args);
}
private static void setUpTrustStoreForApplication() throws IOException {
YamlPropertySourceLoader loader = new YamlPropertySourceLoader();
List<PropertySource<?>> applicationYamlPropertySource = loader.load(
"config-application-properties", new UrlResource(System.getProperty("spring.config.location")));
Map<String, Object> source = ((MapPropertySource) applicationYamlPropertySource.get(0)).getSource();
System.setProperty("javax.net.ssl.trustStore", source.get("server.ssl.trust-store").toString());
System.setProperty("javax.net.ssl.trustStorePassword", source.get("server.ssl.trust-store-password").toString());
}
}
Try Like this.
For Inserting into DB
$db = mysqli_connect("localhost","root","","DbName"); //keep your db name
$image = addslashes(file_get_contents($_FILES['images']['tmp_name']));
//you keep your column name setting for insertion. I keep image type Blob.
$query = "INSERT INTO products (id,image) VALUES('','$image')";
$qry = mysqli_query($db, $query);
For Accessing image From Blob
$db = mysqli_connect("localhost","root","","DbName"); //keep your db name
$sql = "SELECT * FROM products WHERE id = $id";
$sth = $db->query($sql);
$result=mysqli_fetch_array($sth);
echo '<img src="data:image/jpeg;base64,'.base64_encode( $result['image'] ).'"/>';
Hope It will help you.
Thanks.
Well, not always. Using cookies, you are good. But the "can I safely rely on the id being present" urged me to extend the discussion with an important point (mostly for reference, as the visitor count of this page seems quite high).
PHP can be configured to maintain sessions by URL-rewriting, instead of cookies. (How it's good or bad (<-- see e.g. the topmost comment there) is a separate question, let's now stick to the current one, with just one side-note: the most prominent issue with URL-based sessions -- the blatant visibility of the naked session ID -- is not an issue with internal Ajax calls; but then, if it's turned on for Ajax, it's turned on for the rest of the site, too, so there...)
In case of URL-rewriting (cookieless) sessions, Ajax calls must take care of it themselves that their request URLs are properly crafted. (Or you can roll your own custom solution. You can even resort to maintaining sessions on the client side, in less demanding cases.) The point is the explicit care needed for session continuity, if not using cookies:
If the Ajax calls just extract URLs verbatim from the HTML (as received from PHP), that should be OK, as they are already cooked (umm, cookified).
If they need to assemble request URIs themselves, the session ID needs to be added to the URL manually. (Check here, or the page sources generated by PHP (with URL-rewriting on) to see how to do it.)
From OWASP.org:
Effectively, the web application can use both mechanisms, cookies or URL parameters, or even switch from one to the other (automatic URL rewriting) if certain conditions are met (for example, the existence of web clients without cookies support or when cookies are not accepted due to user privacy concerns).
From a Ruby-forum post:
When using php with cookies, the session ID will automatically be sent in the request headers even for Ajax XMLHttpRequests. If you use or allow URL-based php sessions, you'll have to add the session id to every Ajax request url.
This should work:
window.location.hostname
Inside Eclipse I've used the Clay plugin (ex Clay-Azurri). The free version allows to introspect ("reverse engineer") an existing DB schema (via JDBC) and make a diagram of some selected tables.
SELECT * FROM table ORDER BY id DESC LIMIT 50
save resources make one query, there is no need to make nested queries
You have two options here.
Make a proper cron job that calls your script. Cron is a common name for a GNU/Linux daemon that periodically launches scripts according to a schedule you set. You add your script into a crontab or place a symlink to it into a special directory and the daemon handles the job of launching it in the background. You can read more at Wikipedia. There is a variety of different cron daemons, but your GNU/Linux system should have it already installed.
Use some kind of python approach (a library, for example) for your script to be able to daemonize itself. Yes, it will require a simple event loop (where your events are timer triggering, possibly, provided by sleep function).
I wouldn't recommend you to choose 2., because you would be, in fact, repeating cron functionality. The Linux system paradigm is to let multiple simple tools interact and solve your problems. Unless there are additional reasons why you should make a daemon (in addition to trigger periodically), choose the other approach.
Also, if you use daemonize with a loop and a crash happens, no one will check the mail after that (as pointed out by Ivan Nevostruev in comments to this answer). While if the script is added as a cron job, it will just trigger again.
BEST code and simple
<select id="example-getting-started" multiple="multiple" name="category">
<?php
$query = "select * from mine";
$results = mysql_query($query);
while ($rows = mysql_fetch_assoc(@$results)){
?>
<option value="<?php echo $rows['category'];?>"><?php echo $rows['category'];?></option>
<?php
}
?>
</select>
There is no need for custom helper functions if all we need is to print the string of the form [D day[s], ][H]H:MM:SS[.UUUUUU]
. timedelta object supports str()
operation that will do this. It works even in Python 2.6.
>>> from datetime import timedelta
>>> timedelta(seconds=90136)
datetime.timedelta(1, 3736)
>>> str(timedelta(seconds=90136))
'1 day, 1:02:16'
For PHP users :)
Make sure you have 'PHP Symbol' plugin then you can get all methods and class in 'OUTLINE' Sidebar's Bottom.
Press ? command + ? shift + O in "macOS" or Ctrl + Shift + O while using "Windows"
Flushing seemingly failing to work is a side effect of automatic character set detection.
The browser will not display anything until it knows the character set to display it in, and if you don't specify the character set, it need tries to guess it. The problem being that it can't make a good guess without enough data, which is why browsers seem to have this 1024 byte (or similar) buffer they need filled before displaying anything.
The solution is therefore to make sure the browser doesn't have to guess the character set.
If you're sending text, add a '; charset=utf-8' to its content type, and if it's HTML, add the character set to the appropriate meta tag.
The easiest way to do it is to link the CSV-file into the Access database as a table. Then you can work on this table as if it was an ordinary access table, for instance by creating an appropriate query based on this table that returns exactly what you want.
You can link the table either manually or with VBA like this
DoCmd.TransferText TransferType:=acLinkDelim, TableName:="tblImport", _
FileName:="C:\MyData.csv", HasFieldNames:=true
Dim db As DAO.Database
' Re-link the CSV Table
Set db = CurrentDb
On Error Resume Next: db.TableDefs.Delete "tblImport": On Error GoTo 0
db.TableDefs.Refresh
DoCmd.TransferText TransferType:=acLinkDelim, TableName:="tblImport", _
FileName:="C:\MyData.csv", HasFieldNames:=true
db.TableDefs.Refresh
' Perform the import
db.Execute "INSERT INTO someTable SELECT col1, col2, ... FROM tblImport " _
& "WHERE NOT F1 IN ('A1', 'A2', 'A3')"
db.Close: Set db = Nothing
Returns the absolute path to the directory on the filesystem where files created with openFileOutput(String, int) are stored.
Environment.getDataDirectory()
Return the user data directory.
You can make use of regex's quantifier feature since lookaround
may not be supported all the time.
(\bjames\b){1,}.*(\bjack\b){1,}|(\bjack\b){1,}.*(\bjames\b){1,}
Python can use all memory available to its environment. My simple "memory test" crashes on ActiveState Python 2.6 after using about
1959167 [MiB]
On jython 2.5 it crashes earlier:
239000 [MiB]
probably I can configure Jython to use more memory (it uses limits from JVM)
Test app:
import sys
sl = []
i = 0
# some magic 1024 - overhead of string object
fill_size = 1024
if sys.version.startswith('2.7'):
fill_size = 1003
if sys.version.startswith('3'):
fill_size = 497
print(fill_size)
MiB = 0
while True:
s = str(i).zfill(fill_size)
sl.append(s)
if i == 0:
try:
sys.stderr.write('size of one string %d\n' % (sys.getsizeof(s)))
except AttributeError:
pass
i += 1
if i % 1024 == 0:
MiB += 1
if MiB % 25 == 0:
sys.stderr.write('%d [MiB]\n' % (MiB))
In your app you read whole file at once. For such big files you should read the line by line.
var obj=[
{
id : "001",
name : "apple",
category : "fruit",
color : "red"
},
{
id : "002",
name : "melon",
category : "fruit",
color : "green"
},
{
id : "003",
name : "banana",
category : "fruit",
color : "yellow"
}
]
var tbl=$("<table/>").attr("id","mytable");
$("#div1").append(tbl);
for(var i=0;i<obj.length;i++)
{
var tr="<tr>";
var td1="<td>"+obj[i]["id"]+"</td>";
var td2="<td>"+obj[i]["name"]+"</td>";
var td3="<td>"+obj[i]["color"]+"</td></tr>";
$("#mytable").append(tr+td1+td2+td3);
}
You don't set PYTHONPATH
, you add entries to sys.path
. It's a list of directories that should be searched for Python packages, so you can just append your directories to that list.
sys.path.append('/path/to/whatever')
In fact, sys.path
is initialized by splitting the value of PYTHONPATH
on the path separator character (:
on Linux-like systems, ;
on Windows).
You can also add directories using site.addsitedir
, and that method will also take into account .pth
files existing within the directories you pass. (That would not be the case with directories you specify in PYTHONPATH
.)
After some additional searching (new search terms inspired by gbn's answer and u07ch's comment on KMike's answer) I found this, which completed successfully in 2 seconds:
ALTER DATABASE <dbname> SET OFFLINE WITH ROLLBACK IMMEDIATE
When this still fails with the following error, you can fix it as inspired by this blog post:
ALTER DATABASE failed because a lock could not be placed on database 'dbname' Try again later.
you can run the following command to find out who is keeping a lock on your database:
EXEC sp_who2
And use whatever SPID
you find in the following command:
KILL <SPID>
Then run the ALTER DATABASE
command again. It should now work.
Add .env file with "SKIP_PREFLIGHT_CHECK=true" than npm start
If you code C or C++ language. I think we are lucky because we could use a file to input. It is so convenient and clear. I often do that. This is argument to implement it :
{
freopen("inputfile", "r", stdin);
}
Notice that inputfile must locate at same directory with source code file, r is stand for read.
Annotate your Entity class with the code below.
In Java:
@PrimaryKey(autoGenerate = true)
private int id;
In Kotlin:
@PrimaryKey(autoGenerate = true)
var id: Int
Room will then auto-generate and auto-increment the id field.
To do this, I had to come up with an intermediate data structure:
class KeyDataPoint {
String key;
DateTime timestamp;
Number data;
// obvious constructor and getters
}
With this in place, the approach is to "flatten" each MultiDataPoint into a list of (timestamp, key, data) triples and stream together all such triples from the list of MultiDataPoint.
Then, we apply a groupingBy
operation on the string key in order to gather the data for each key together. Note that a simple groupingBy
would result in a map from each string key to a list of the corresponding KeyDataPoint triples. We don't want the triples; we want DataPoint instances, which are (timestamp, data) pairs. To do this we apply a "downstream" collector of the groupingBy
which is a mapping
operation that constructs a new DataPoint by getting the right values from the KeyDataPoint triple. The downstream collector of the mapping
operation is simply toList
which collects the DataPoint objects of the same group into a list.
Now we have a Map<String, List<DataPoint>>
and we want to convert it to a collection of DataSet objects. We simply stream out the map entries and construct DataSet objects, collect them into a list, and return it.
The code ends up looking like this:
Collection<DataSet> convertMultiDataPointToDataSet(List<MultiDataPoint> multiDataPoints) {
return multiDataPoints.stream()
.flatMap(mdp -> mdp.getData().entrySet().stream()
.map(e -> new KeyDataPoint(e.getKey(), mdp.getTimestamp(), e.getValue())))
.collect(groupingBy(KeyDataPoint::getKey,
mapping(kdp -> new DataPoint(kdp.getTimestamp(), kdp.getData()), toList())))
.entrySet().stream()
.map(e -> new DataSet(e.getKey(), e.getValue()))
.collect(toList());
}
I took some liberties with constructors and getters, but I think they should be obvious.
The alternative, if you don't want to install libjpeg:
CFLAGS="--disable-jpeg" pip install pillow
From https://pillow.readthedocs.io/en/3.0.0/installation.html#external-libraries
From RFC 1945 (HTTP/1.0) and RFC 2617 (HTTP Authentication referenced by HTTP/1.1)
The realm attribute (case-insensitive) is required for all authentication schemes which issue a challenge. The realm value (case-sensitive), in combination with the canonical root URL of the server being accessed, defines the protection space. These realms allow the protected resources on a server to be partitioned into a set of protection spaces, each with its own authentication scheme and/or authorization database. The realm value is a string, generally assigned by the origin server, which may have additional semantics specific to the authentication scheme.
In short, pages in the same realm should share credentials. If your credentials work for a page with the realm "My Realm", it should be assumed that the same username and password combination should work for another page with the same realm.
Here's a more simple version. In the cell you want the date to show up just type
=Today()
Format the cell to the date format you want and Bob's your uncle. :)
Try this it will definetly work,other case i tried but didn't work
import _ from 'lodash';
this.state.var_name = _.assign(this.state.var_name, {
obj_prop: 'changed_value',
});
while not condition1 or not condition2 or val == -1:
But there was nothing wrong with your original of using an if inside of a while True.
in my opinion strstr() is better than strpos(). because strstr() is compatible with both PHP 4 AND PHP 5. but strpos() is only compatible with PHP 5. please note that part of servers have no PHP 5
While doing my own server side JS experimentation I ended up using teajs. It conforms to common.js, is based on V8 AND is the only project that I know of that provides 'mod_teajs' apache server module.
In my opinion Node.js server is not production ready and lacks too many features - Apache is battle tested and the right way to do SSJS.
I understand the problem of performing the segue at one place and maintaining the state to send parameters in prepare for segue.
I figured out a way to do this. I've added a property called userInfoDict to ViewControllers using a category. and I've override perform segue with identifier too, in such a way that If the sender is self(means the controller itself). It will pass this userInfoDict to the next ViewController.
Here instead of passing the whole UserInfoDict you can also pass the specific params, as sender and override accordingly.
1 thing you need to keep in mind. don't forget to call super method in ur performSegue method.
The example implementation when you want to have an abstract class with implementation. Subclasses must:
In this case, the properties that are necessary for the implementation should not be available for use except for the abstract class and its own subclass.
internal abstract class AbstractClass
{
//Properties for parameterization from concrete class
protected abstract string Param1 { get; }
protected abstract string Param2 { get; }
//Internal fields need for manage state of object
private string var1;
private string var2;
internal AbstractClass(string _var1, string _var2)
{
this.var1 = _var1;
this.var2 = _var2;
}
internal void CalcResult()
{
//The result calculation uses Param1, Param2, var1, var2;
}
}
internal class ConcreteClassFirst : AbstractClass
{
private string param1;
private string param2;
protected override string Param1 { get { return param1; } }
protected override string Param2 { get { return param2; } }
public ConcreteClassFirst(string _var1, string _var2) : base(_var1, _var2) { }
internal void CalcParams()
{
//The calculation param1 and param2
}
}
internal class ConcreteClassSecond : AbstractClass
{
private string param1;
private string param2;
protected override string Param1 { get { return param1; } }
protected override string Param2 { get { return param2; } }
public ConcreteClassSecond(string _var1, string _var2) : base(_var1, _var2) { }
internal void CalcParams()
{
//The calculation param1 and param2
}
}
static void Main(string[] args)
{
string var1_1 = "val1_1";
string var1_2 = "val1_2";
ConcreteClassFirst concreteClassFirst = new ConcreteClassFirst(var1_1, var1_2);
concreteClassFirst.CalcParams();
concreteClassFirst.CalcResult();
string var2_1 = "val2_1";
string var2_2 = "val2_2";
ConcreteClassSecond concreteClassSecond = new ConcreteClassSecond(var2_1, var2_2);
concreteClassSecond.CalcParams();
concreteClassSecond.CalcResult();
//Param1 and Param2 are not visible in main method
}
To plot just a selection of your columns you can select the columns of interest by passing a list to the subscript operator:
ax = df[['V1','V2']].plot(kind='bar', title ="V comp", figsize=(15, 10), legend=True, fontsize=12)
What you tried was df['V1','V2']
this will raise a KeyError
as correctly no column exists with that label, although it looks funny at first you have to consider that your are passing a list hence the double square brackets [[]]
.
import matplotlib.pyplot as plt
ax = df[['V1','V2']].plot(kind='bar', title ="V comp", figsize=(15, 10), legend=True, fontsize=12)
ax.set_xlabel("Hour", fontsize=12)
ax.set_ylabel("V", fontsize=12)
plt.show()
<link rel="SHORTCUT ICON" href="favicon.ico" type="image/x-icon" />
<link rel="ICON" href="favicon.ico" type="image/ico" />
Excellent tool for cross-browser favicon - http://www.convertico.com/
If you aren't actually restricted to keeping all of these elements as sibling nodes you can wrap the ones that go together in another default flex box, and have the container of both use space-between.
.space-between {_x000D_
border: 1px solid red;_x000D_
display: flex;_x000D_
justify-content: space-between;_x000D_
}_x000D_
.default-flex {_x000D_
border: 1px solid blue;_x000D_
display: flex;_x000D_
}_x000D_
.child {_x000D_
width: 100px;_x000D_
height: 100px;_x000D_
border: 1px solid;_x000D_
}
_x000D_
<div class="space-between">_x000D_
<div class="child">1</div>_x000D_
<div class="default-flex">_x000D_
<div class="child">2</div>_x000D_
<div class="child">3</div>_x000D_
<div class="child">4</div>_x000D_
<div class="child">5</div>_x000D_
</div>_x000D_
</div>
_x000D_
Or if you were doing the same thing with flex-start and flex-end reversed you just swap the order of the default-flex container and lone child.
Could this do for you? Check my JSFiddle
And the code:
HTML
<div class="container">
<div class="div1">Div 1</div>
<div class="div2">Div 2</div>
</div>
CSS
div.container {
background-color: #FF0000;
margin: auto;
width: 304px;
}
div.div1 {
border: 1px solid #000;
float: left;
width: 150px;
}
div.div2 {
border: 1px solid red;
float: left;
width: 150px;
}
I realize this question was posted a while ago; nonetheless, Bootstrap v4.0 has card layout support out of the box. You can find the documentation here: Bootstrap Card Layouts.
I've gotten back into using Bootstrap for a recent project that relies heavily on the card layout UI. I've found success with the following implementation across the standard breakpoints:
<link href="https://unpkg.com/[email protected]/css/tachyons.min.css" rel="stylesheet"/>_x000D_
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" rel="stylesheet"/>_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>_x000D_
<div class="flex justify-center" id="cars" v-cloak>_x000D_
<!-- RELEVANT MARKUP BEGINS HERE -->_x000D_
<div class="container mh0 w-100">_x000D_
<div class="page-header text-center mb5">_x000D_
<h1 class="avenir text-primary mb-0">Cars</h1>_x000D_
<p class="text-secondary">Add and manage your cars for sale.</p>_x000D_
<div class="header-button">_x000D_
<button class="btn btn-outline-primary" @click="clickOpenAddCarModalButton">Add a car for sale</button>_x000D_
</div>_x000D_
</div>_x000D_
<div class="container pa0 flex justify-center">_x000D_
<div class="listings card-columns">_x000D_
<div class="card mv2">_x000D_
<img src="https://farm4.staticflickr.com/3441/3361756632_8d84aa8560.jpg" class="card-img-top"_x000D_
alt="Mazda hatchback">_x000D_
<div class="card-body">_x000D_
<h5 class="card-title">Card title</h5>_x000D_
<p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's_x000D_
content._x000D_
</p>_x000D_
<a href="#" class="btn btn-primary">Go somewhere</a>_x000D_
</div>_x000D_
<div class="card-footer">_x000D_
buttons here_x000D_
</div>_x000D_
</div>_x000D_
<div class="card mv2">_x000D_
<img src="https://farm4.staticflickr.com/3441/3361756632_8d84aa8560.jpg" class="card-img-top"_x000D_
alt="Mazda hatchback">_x000D_
<div class="card-body">_x000D_
<h5 class="card-title">Card title</h5>_x000D_
<p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's_x000D_
content._x000D_
</p>_x000D_
<a href="#" class="btn btn-primary">Go somewhere</a>_x000D_
</div>_x000D_
<div class="card-footer">_x000D_
buttons here_x000D_
</div>_x000D_
</div>_x000D_
<div class="card mv2">_x000D_
<img src="https://farm4.staticflickr.com/3441/3361756632_8d84aa8560.jpg" class="card-img-top"_x000D_
alt="Mazda hatchback">_x000D_
<div class="card-body">_x000D_
<h5 class="card-title">Card title</h5>_x000D_
<p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's_x000D_
content._x000D_
</p>_x000D_
<a href="#" class="btn btn-primary">Go somewhere</a>_x000D_
</div>_x000D_
<div class="card-footer">_x000D_
buttons here_x000D_
</div>_x000D_
</div>_x000D_
<div class="card mv2">_x000D_
<img src="https://farm4.staticflickr.com/3441/3361756632_8d84aa8560.jpg" class="card-img-top"_x000D_
alt="Mazda hatchback">_x000D_
<div class="card-body">_x000D_
<h5 class="card-title">Card title</h5>_x000D_
<p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's_x000D_
content._x000D_
</p>_x000D_
<a href="#" class="btn btn-primary">Go somewhere</a>_x000D_
</div>_x000D_
<div class="card-footer">_x000D_
buttons here_x000D_
</div>_x000D_
</div>_x000D_
<div class="card mv2">_x000D_
<img src="https://farm4.staticflickr.com/3441/3361756632_8d84aa8560.jpg" class="card-img-top"_x000D_
alt="Mazda hatchback">_x000D_
<div class="card-body">_x000D_
<h5 class="card-title">Card title</h5>_x000D_
<p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's_x000D_
content._x000D_
</p>_x000D_
<a href="#" class="btn btn-primary">Go somewhere</a>_x000D_
</div>_x000D_
<div class="card-footer">_x000D_
buttons here_x000D_
</div>_x000D_
</div>_x000D_
</div>_x000D_
</div>_x000D_
</div>_x000D_
</div>
_x000D_
After trying both the Bootstrap .card-group
and .card-deck
card layout classes with quirky results at best across the standard breakpoints, I finally decided to give the .card-columns
class a shot. And it worked!
Your results may vary, but .card-columns
seems to be the most stable implementation here.
In contribution to ellabeauty's answer. you can also use this dynamic percentage values
$('.bar').css('width', function(){ return ($(this).attr('data-percentage')+'%')});
And probably add custom easing to your css
.bar {
-webkit-transition: width 2.50s ease !important;
-moz-transition: width 2.50s ease !important;
-o-transition: width 2.50s ease !important;
transition: width 2.50s ease !important;
}
I tried the code provided above, but it gave an error 9 for me. I made this code, and it worked fine for my purposes. I hope others find it useful as well.
Function mergeArrays(ByRef arr1() As Variant, arr2() As Variant) As Variant
Dim returnThis() As Variant
Dim len1 As Integer, len2 As Integer, lenRe As Integer, counter As Integer
len1 = UBound(arr1)
len2 = UBound(arr2)
lenRe = len1 + len2
ReDim returnThis(1 To lenRe)
counter = 1
Do While counter <= len1 'get first array in returnThis
returnThis(counter) = arr1(counter)
counter = counter + 1
Loop
Do While counter <= lenRe 'get the second array in returnThis
returnThis(counter) = arr2(counter - len1)
counter = counter + 1
Loop
mergeArrays = returnThis
End Function
There are several other version managers to consider, see for a few examples and one that's not listed there that I'll be giving a try soon is ch-ruby. I tried rbenv but had too many problems with it. RVM is my mainstay, though it sometimes has the odd problem (hence my wish to try ch-ruby when I get a chance). I wouldn't touch the system Ruby, as other things may rely on it.
I should add I've also compiled my own Ruby several times, and using the Hivelogic article (as Dave Everitt has suggested) is a good idea if you take that route.
Although you could certainly use the compareTo
method on an Integer instance, it's not clear when reading the code, so you should probably avoid doing so.
Java allows you to use autoboxing (see http://java.sun.com/j2se/1.5.0/docs/guide/language/autoboxing.html) to compare directly with an int, so you can do:
if (count > 0) { }
And the Integer
instance count
gets automatically converted to an int
for the comparison.
If you're having trouble understanding this, check out the link above, or imagine it's doing this:
if (count.intValue() > 0) { }
As the error message says, you have an inline style, which CSP prohibits. I see at least one (list-style: none
) in your HTML. Put that style in your CSS file instead.
To explain further, Content Security Policy does not allow inline CSS because it could be dangerous. From An Introduction to Content Security Policy:
"If an attacker can inject a script tag that directly contains some malicious payload .. the browser has no mechanism by which to distinguish it from a legitimate inline script tag. CSP solves this problem by banning inline script entirely: it’s the only way to be sure."
While waiting for read()
or write()
to/from a file descriptor return, the process will be put in a special kind of sleep, known as "D" or "Disk Sleep". This is special, because the process can not be killed or interrupted while in such a state. A process waiting for a return from ioctl() would also be put to sleep in this manner.
An exception to this is when a file (such as a terminal or other character device) is opened in O_NONBLOCK
mode, passed when its assumed that a device (such as a modem) will need time to initialize. However, you indicated block devices in your question. Also, I have never tried an ioctl()
that is likely to block on a fd opened in non blocking mode (at least not knowingly).
How another process is chosen depends entirely on the scheduler you are using, as well as what other processes might have done to modify their weights within that scheduler.
Some user space programs under certain circumstances have been known to remain in this state forever, until rebooted. These are typically grouped in with other "zombies", but the term would not be correct as they are not technically defunct.
#include guards are the standard way of doing this. #pragma once is not, meaning that not all compilers support it.
Add this to the bottom of your popper.js file:
Popper.Defaults.modifiers.computeStyle.gpuAcceleration = !(window.devicePixelRatio < 1.5 && /Win/.test(navigator.platform));
Updated answer for ES6+ is here.
arr = [1, 2, 3];
arr.forEach(function(i, idx, array){
if (idx === array.length - 1){
console.log("Last callback call at index " + idx + " with value " + i );
}
});
would output:
Last callback call at index 2 with value 3
The way this works is testing arr.length
against the current index of the array, passed to the callback function.
Declare @MyInt int
Set @MyInt = ( Select Count(*) From MyTable )
If @MyInt > 0
Begin
Print 'There''s something in the table'
End
I'm not sure if this is your issue, but you have to esacpe the single quote in the print statement with a second single quote. While you can use SELECT to populate the variable, using SET as you have done here is just fine and clearer IMO. In addition, you can be guaranteed that Count(*) will never return a negative value so you need only check whether it is greater than zero.
ls -l | grep "^-"
Hope this one would serve your purpose.
After PHP 5 you can use this: echo date("c");
form ISO 8601 formatted datetime.
Note for comments:
Regarding to this, both of these expressions are valid for timezone, for basic format: ±[hh]:[mm], ±[hh][mm], or ±[hh]
.
But note that, +0X:00 is correct, and +0X00 is incorrect for extended usage. So it's better to use date("c")
. A similar discussion here.
Working from what you've given I'll assume you want to check that someone has NOT entered any letters other than the ones you've listed. For that to work you want to search for any characters other than those listed:
[^A-Za-z0-9_.]
And use that in a match in your code, something like:
if ( /[^A-Za-z0-9_.]/.match( your_input_string ) ) {
alert( "you have entered invalid data" );
}
Hows that?
In case you develop applications for Android you should try out the TimingLogger
class.
Take a look at these articles describing the usage of the TimingLogger
helper class:
Install-Package System.Drawing.Common
I have done exactly this with an ICustomTypeDescriptor interface and a Dictionary.
Implementing ICustomTypeDescriptor for dynamic properties:
I have recently had a requirement to bind a grid view to a record object that could have any number of properties that can be added and removed at runtime. This was to allow a user to add a new column to a result set to enter an additional set of data.
This can be achieved by having each data 'row' as a dictionary with the key being the property name and the value being a string or a class that can store the value of the property for the specified row. Of course having a List of Dictionary objects will not be able to be bound to a grid. This is where the ICustomTypeDescriptor comes in.
By creating a wrapper class for the Dictionary and making it adhere to the ICustomTypeDescriptor interface the behaviour for returning properties for an object can be overridden.
Take a look at the implementation of the data 'row' class below:
/// <summary>
/// Class to manage test result row data functions
/// </summary>
public class TestResultRowWrapper : Dictionary<string, TestResultValue>, ICustomTypeDescriptor
{
//- METHODS -----------------------------------------------------------------------------------------------------------------
#region Methods
/// <summary>
/// Gets the Attributes for the object
/// </summary>
AttributeCollection ICustomTypeDescriptor.GetAttributes()
{
return new AttributeCollection(null);
}
/// <summary>
/// Gets the Class name
/// </summary>
string ICustomTypeDescriptor.GetClassName()
{
return null;
}
/// <summary>
/// Gets the component Name
/// </summary>
string ICustomTypeDescriptor.GetComponentName()
{
return null;
}
/// <summary>
/// Gets the Type Converter
/// </summary>
TypeConverter ICustomTypeDescriptor.GetConverter()
{
return null;
}
/// <summary>
/// Gets the Default Event
/// </summary>
/// <returns></returns>
EventDescriptor ICustomTypeDescriptor.GetDefaultEvent()
{
return null;
}
/// <summary>
/// Gets the Default Property
/// </summary>
PropertyDescriptor ICustomTypeDescriptor.GetDefaultProperty()
{
return null;
}
/// <summary>
/// Gets the Editor
/// </summary>
object ICustomTypeDescriptor.GetEditor(Type editorBaseType)
{
return null;
}
/// <summary>
/// Gets the Events
/// </summary>
EventDescriptorCollection ICustomTypeDescriptor.GetEvents(Attribute[] attributes)
{
return new EventDescriptorCollection(null);
}
/// <summary>
/// Gets the events
/// </summary>
EventDescriptorCollection ICustomTypeDescriptor.GetEvents()
{
return new EventDescriptorCollection(null);
}
/// <summary>
/// Gets the properties
/// </summary>
PropertyDescriptorCollection ICustomTypeDescriptor.GetProperties(Attribute[] attributes)
{
List<propertydescriptor> properties = new List<propertydescriptor>();
//Add property descriptors for each entry in the dictionary
foreach (string key in this.Keys)
{
properties.Add(new TestResultPropertyDescriptor(key));
}
//Get properties also belonging to this class also
PropertyDescriptorCollection pdc = TypeDescriptor.GetProperties(this.GetType(), attributes);
foreach (PropertyDescriptor oPropertyDescriptor in pdc)
{
properties.Add(oPropertyDescriptor);
}
return new PropertyDescriptorCollection(properties.ToArray());
}
/// <summary>
/// gets the Properties
/// </summary>
PropertyDescriptorCollection ICustomTypeDescriptor.GetProperties()
{
return ((ICustomTypeDescriptor)this).GetProperties(null);
}
/// <summary>
/// Gets the property owner
/// </summary>
object ICustomTypeDescriptor.GetPropertyOwner(PropertyDescriptor pd)
{
return this;
}
#endregion Methods
//---------------------------------------------------------------------------------------------------------------------------
}
Note: In the GetProperties method I Could Cache the PropertyDescriptors once read for performance but as I'm adding and removing columns at runtime I always want them rebuilt
You will also notice in the GetProperties method that the Property Descriptors added for the dictionary entries are of type TestResultPropertyDescriptor. This is a custom Property Descriptor class that manages how properties are set and retrieved. Take a look at the implementation below:
/// <summary>
/// Property Descriptor for Test Result Row Wrapper
/// </summary>
public class TestResultPropertyDescriptor : PropertyDescriptor
{
//- PROPERTIES --------------------------------------------------------------------------------------------------------------
#region Properties
/// <summary>
/// Component Type
/// </summary>
public override Type ComponentType
{
get { return typeof(Dictionary<string, TestResultValue>); }
}
/// <summary>
/// Gets whether its read only
/// </summary>
public override bool IsReadOnly
{
get { return false; }
}
/// <summary>
/// Gets the Property Type
/// </summary>
public override Type PropertyType
{
get { return typeof(string); }
}
#endregion Properties
//- CONSTRUCTOR -------------------------------------------------------------------------------------------------------------
#region Constructor
/// <summary>
/// Constructor
/// </summary>
public TestResultPropertyDescriptor(string key)
: base(key, null)
{
}
#endregion Constructor
//- METHODS -----------------------------------------------------------------------------------------------------------------
#region Methods
/// <summary>
/// Can Reset Value
/// </summary>
public override bool CanResetValue(object component)
{
return true;
}
/// <summary>
/// Gets the Value
/// </summary>
public override object GetValue(object component)
{
return ((Dictionary<string, TestResultValue>)component)[base.Name].Value;
}
/// <summary>
/// Resets the Value
/// </summary>
public override void ResetValue(object component)
{
((Dictionary<string, TestResultValue>)component)[base.Name].Value = string.Empty;
}
/// <summary>
/// Sets the value
/// </summary>
public override void SetValue(object component, object value)
{
((Dictionary<string, TestResultValue>)component)[base.Name].Value = value.ToString();
}
/// <summary>
/// Gets whether the value should be serialized
/// </summary>
public override bool ShouldSerializeValue(object component)
{
return false;
}
#endregion Methods
//---------------------------------------------------------------------------------------------------------------------------
}
The main properties to look at on this class are GetValue and SetValue. Here you can see the component being casted as a dictionary and the value of the key inside it being Set or retrieved. Its important that the dictionary in this class is the same type in the Row wrapper class otherwise the cast will fail. When the descriptor is created the key (property name) is passed in and is used to query the dictionary to get the correct value.
Taken from my blog at:
MacPorts is another package manager for OS X:.
Installation instructions are at The MacPorts Project -- Download & Installation after which one issues sudo port install pythonXX
, where XX
is 27
or 35
.
cURL is an option, using Ajax as well eventhough solving back-end problems with the front-end isn't so neat.
A very useful post about doing it without cURL is this one: http://netevil.org/blog/2006/nov/http-post-from-php-without-curl
The code to do this (untested, unimproved, from the blog post):
function do_post_request($url, $data, $optional_headers = null)
{
$params = array('http' => array(
'method' => 'POST',
'content' => $data
));
if ($optional_headers !== null) {
$params['http']['header'] = $optional_headers;
}
$ctx = stream_context_create($params);
$fp = @fopen($url, 'rb', false, $ctx);
if (!$fp) {
throw new Exception("Problem with $url, $php_errormsg");
}
$response = @stream_get_contents($fp);
if ($response === false) {
throw new Exception("Problem reading data from $url, $php_errormsg");
}
return $response;
}
Because, as said in other answers, class enum are not implicitly convertible to int/bool, it also helps to avoid buggy code like:
enum MyEnum {
Value1,
Value2,
};
...
if (var == Value1 || Value2) // Should be "var == Value2" no error/warning
The big-O notation has a companion called small-o notation. The big-O notation says the one function is asymptotical no more than
another. To say that one function is asymptotically less than
another, we use small-o notation. The difference between the big-O and small-o notations is analogous to the difference between <= (less than equal) and < (less than).
2D array:
int sum(int array[][COLS], int rows)
{
}
3D array:
int sum(int array[][B][C], int A)
{
}
4D array:
int sum(int array[][B][C][D], int A)
{
}
and nD array:
int sum(int ar[][B][C][D][E][F].....[N], int A)
{
}
Contributing with a minified polyfill for window.atob
+ window.btoa
that I'm currently using.
(function(){function t(t){this.message=t}var e="undefined"!=typeof exports?exports:this,r="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";t.prototype=Error(),t.prototype.name="InvalidCharacterError",e.btoa||(e.btoa=function(e){for(var o,n,a=0,i=r,c="";e.charAt(0|a)||(i="=",a%1);c+=i.charAt(63&o>>8-8*(a%1))){if(n=e.charCodeAt(a+=.75),n>255)throw new t("'btoa' failed: The string to be encoded contains characters outside of the Latin1 range.");o=o<<8|n}return c}),e.atob||(e.atob=function(e){if(e=e.replace(/=+$/,""),1==e.length%4)throw new t("'atob' failed: The string to be decoded is not correctly encoded.");for(var o,n,a=0,i=0,c="";n=e.charAt(i++);~n&&(o=a%4?64*o+n:n,a++%4)?c+=String.fromCharCode(255&o>>(6&-2*a)):0)n=r.indexOf(n);return c})})();
I use celery to create my periodical tasks. First you need to install it as follows:
pip install django-celery
Don't forget to register django-celery
in your settings and then you could do something like this:
from celery import task
from celery.decorators import periodic_task
from celery.task.schedules import crontab
from celery.utils.log import get_task_logger
@periodic_task(run_every=crontab(minute="0", hour="23"))
def do_every_midnight():
#your code
Is a JNDI problem. You will see that exception if the InitialContext
class has neither default properties for the JNDI service provider nor explicitly configured server properties.
Set the Context.INITIAL_CONTEXT_FACTORY
environment property to the class name of the initial context implementation that you are using. This class must be available to your program in the classpath.
Check:
password.setInputType(InputType.TYPE_CLASS_TEXT |
InputType.TYPE_TEXT_VARIATION_PASSWORD);
also you have to be careful that cursor moves to the starting point of the editText after this function is called, so make sure that you move cursor to the end point again.
Anyway, we have a "goes to" operator now. "-->"
is easy to be remembered as a direction, and "while x goes to zero" is meaning-straight.
Furthermore, it is a little more efficient than "for (x = 10; x > 0; x --)"
on some platforms.
You can use: <xsl:text> </xsl:text>
see the example
<xsl:variable name="module-info">
<xsl:value-of select="@name" /> = <xsl:value-of select="@rev" />
<xsl:text> </xsl:text>
</xsl:variable>
if you write this in file e.g.
<redirect:write file="temp.prop" append="true">
<xsl:value-of select="$module-info" />
</redirect:write>
this variable will produce a new line infile as:
commons-dbcp_commons-dbcp = 1.2.2
junit_junit = 4.4
org.easymock_easymock = 2.4
I had a similar problem using axes. The class parameter is frameon
but the kwarg is frame_on
. axes_api
>>> plt.gca().set(frameon=False)
AttributeError: Unknown property frameon
frame_on
data = range(100)
import matplotlib.pyplot as plt
fig, ax = plt.subplots()
ax.plot(data)
#ax.set(frameon=False) # Old
ax.set(frame_on=False) # New
plt.show()
It is better to use this syntax to replace all the commas in a case of a million 1,234,567
var string = "1,234,567";
string = string.replace(/[^\d\.\-]/g, "");
var number = parseFloat(string);
console.log(number)
The g
means to remove all commas.
Check the Jsfiddle demo here.
Starting from the decoded base64 data of an OpenSSL rsa-ssh Key, i've been able to guess a format:
00 00 00 07
: four byte length prefix (7 bytes)73 73 68 2d 72 73 61
: "ssh-rsa"00 00 00 01
: four byte length prefix (1 byte)25
: RSA Exponent (e
): 2500 00 01 00
: four byte length prefix (256 bytes)RSA Modulus (n
):
7f 9c 09 8e 8d 39 9e cc d5 03 29 8b c4 78 84 5f
d9 89 f0 33 df ee 50 6d 5d d0 16 2c 73 cf ed 46
dc 7e 44 68 bb 37 69 54 6e 9e f6 f0 c5 c6 c1 d9
cb f6 87 78 70 8b 73 93 2f f3 55 d2 d9 13 67 32
70 e6 b5 f3 10 4a f5 c3 96 99 c2 92 d0 0f 05 60
1c 44 41 62 7f ab d6 15 52 06 5b 14 a7 d8 19 a1
90 c6 c1 11 f8 0d 30 fd f5 fc 00 bb a4 ef c9 2d
3f 7d 4a eb d2 dc 42 0c 48 b2 5e eb 37 3c 6c a0
e4 0a 27 f0 88 c4 e1 8c 33 17 33 61 38 84 a0 bb
d0 85 aa 45 40 cb 37 14 bf 7a 76 27 4a af f4 1b
ad f0 75 59 3e ac df cd fc 48 46 97 7e 06 6f 2d
e7 f5 60 1d b1 99 f8 5b 4f d3 97 14 4d c5 5e f8
76 50 f0 5f 37 e7 df 13 b8 a2 6b 24 1f ff 65 d1
fb c8 f8 37 86 d6 df 40 e2 3e d3 90 2c 65 2b 1f
5c b9 5f fa e9 35 93 65 59 6d be 8c 62 31 a9 9b
60 5a 0e e5 4f 2d e6 5f 2e 71 f3 7e 92 8f fe 8b
The closest validation of my theory i can find it from RFC 4253:
The "ssh-rsa" key format has the following specific encoding:
string "ssh-rsa" mpint e mpint n
Here the 'e' and 'n' parameters form the signature key blob.
But it doesn't explain the length prefixes.
Taking the random RSA PUBLIC KEY
i found (in the question), and decoding the base64 into hex:
30 82 01 0a 02 82 01 01 00 fb 11 99 ff 07 33 f6 e8 05 a4 fd 3b 36 ca 68
e9 4d 7b 97 46 21 16 21 69 c7 15 38 a5 39 37 2e 27 f3 f5 1d f3 b0 8b 2e
11 1c 2d 6b bf 9f 58 87 f1 3a 8d b4 f1 eb 6d fe 38 6c 92 25 68 75 21 2d
dd 00 46 87 85 c1 8a 9c 96 a2 92 b0 67 dd c7 1d a0 d5 64 00 0b 8b fd 80
fb 14 c1 b5 67 44 a3 b5 c6 52 e8 ca 0e f0 b6 fd a6 4a ba 47 e3 a4 e8 94
23 c0 21 2c 07 e3 9a 57 03 fd 46 75 40 f8 74 98 7b 20 95 13 42 9a 90 b0
9b 04 97 03 d5 4d 9a 1c fe 3e 20 7e 0e 69 78 59 69 ca 5b f5 47 a3 6b a3
4d 7c 6a ef e7 9f 31 4e 07 d9 f9 f2 dd 27 b7 29 83 ac 14 f1 46 67 54 cd
41 26 25 16 e4 a1 5a b1 cf b6 22 e6 51 d3 e8 3f a0 95 da 63 0b d6 d9 3e
97 b0 c8 22 a5 eb 42 12 d4 28 30 02 78 ce 6b a0 cc 74 90 b8 54 58 1f 0f
fb 4b a3 d4 23 65 34 de 09 45 99 42 ef 11 5f aa 23 1b 15 15 3d 67 83 7a
63 02 03 01 00 01
From RFC3447 - Public-Key Cryptography Standards (PKCS) #1: RSA Cryptography Specifications Version 2.1:
A.1.1 RSA public key syntax
An RSA public key should be represented with the ASN.1 type
RSAPublicKey
:RSAPublicKey ::= SEQUENCE { modulus INTEGER, -- n publicExponent INTEGER -- e }
The fields of type RSAPublicKey have the following meanings:
- modulus is the RSA modulus n.
- publicExponent is the RSA public exponent e.
Using Microsoft's excellent (and the only real) ASN.1 documentation:
30 82 01 0a ;SEQUENCE (0x010A bytes: 266 bytes)
| 02 82 01 01 ;INTEGER (0x0101 bytes: 257 bytes)
| | 00 ;leading zero because high-bit, but number is positive
| | fb 11 99 ff 07 33 f6 e8 05 a4 fd 3b 36 ca 68
| | e9 4d 7b 97 46 21 16 21 69 c7 15 38 a5 39 37 2e 27 f3 f5 1d f3 b0 8b 2e
| | 11 1c 2d 6b bf 9f 58 87 f1 3a 8d b4 f1 eb 6d fe 38 6c 92 25 68 75 21 2d
| | dd 00 46 87 85 c1 8a 9c 96 a2 92 b0 67 dd c7 1d a0 d5 64 00 0b 8b fd 80
| | fb 14 c1 b5 67 44 a3 b5 c6 52 e8 ca 0e f0 b6 fd a6 4a ba 47 e3 a4 e8 94
| | 23 c0 21 2c 07 e3 9a 57 03 fd 46 75 40 f8 74 98 7b 20 95 13 42 9a 90 b0
| | 9b 04 97 03 d5 4d 9a 1c fe 3e 20 7e 0e 69 78 59 69 ca 5b f5 47 a3 6b a3
| | 4d 7c 6a ef e7 9f 31 4e 07 d9 f9 f2 dd 27 b7 29 83 ac 14 f1 46 67 54 cd
| | 41 26 25 16 e4 a1 5a b1 cf b6 22 e6 51 d3 e8 3f a0 95 da 63 0b d6 d9 3e
| | 97 b0 c8 22 a5 eb 42 12 d4 28 30 02 78 ce 6b a0 cc 74 90 b8 54 58 1f 0f
| | fb 4b a3 d4 23 65 34 de 09 45 99 42 ef 11 5f aa 23 1b 15 15 3d 67 83 7a
| | 63
| 02 03 ;INTEGER (3 bytes)
| 01 00 01
giving the public key modulus and exponent:
0xfb1199ff0733f6e805a4fd3b36ca68...837a63
For me the following worked fine:
> docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
debian jessie 86baf4e8cde9 3 weeks ago 123MB
ubuntu yakkety 7d3f705d307c 3 weeks ago 107MB
alpine 3.5 074d602a59d7 7 weeks ago 3.99MB
Then go ahead and remove an image by running some like these:
> docker rmi debian:jessie
> docker rmi ubuntu:yakkety
> docker rmi alipine:3.5
Use empty()
. It checks for both empty strings and null.
if (!empty($_POST['user'])) {
// do stuff
}
From the manual:
The following things are considered to be empty:
"" (an empty string)
0 (0 as an integer)
0.0 (0 as a float)
"0" (0 as a string)
NULL
FALSE
array() (an empty array)
var $var; (a variable declared, but without a value in a class)
As Paul stated, it's because 'a'
is an int
in C but a char
in C++.
I cover that specific difference between C and C++ in something I wrote a few years ago, at: http://david.tribble.com/text/cdiffs.htm
When I want to have docstrings for my bash functions, I use a solution similar to the suggestion of user12205 in a duplicate of this question.
See how I define USAGE for a solution that:
function foo {
# Docstring
read -r -d '' USAGE <<' END'
# This method prints foo to the terminal.
#
# Enter `foo -h` to see the docstring.
# It has indentations and multiple lines.
#
# Change the delimiter if you need hashtag for some reason.
# This can include $$ and = and eval, but won't be evaluated
END
if [ "$1" = "-h" ]
then
echo "$USAGE" | cut -d "#" -f 2 | cut -c 2-
return
fi
echo "foo"
}
So foo -h
yields:
This method prints foo to the terminal.
Enter `foo -h` to see the docstring.
It has indentations and multiple lines.
Change the delimiter if you need hashtag for some reason.
This can include $$ and = and eval, but won't be evaluated
Explanation
cut -d "#" -f 2
: Retrieve the second portion of the #
delimited lines. (Think a csv with "#" as the delimiter, empty first column).
cut -c 2-
: Retrieve the 2nd to end character of the resultant string
Also note that if [ "$1" = "-h" ]
evaluates as False
if there is no first argument, w/o error, since it becomes an empty string.
I don't know if this has changed. But from my experience. nested elements have a maximum opacity equal to the fathers.
Which mean:
<div id="a">
<div id="b">
</div></div>
Div#a has 0.6 opacity
div#b has 1 opacity
Has #b is within #a then it's maximum opacity is always 0.6
If #b would have 0.5 opacity. In reallity it would be 0.6*0.5 == 0.3 opacity
You could try to extract columns as list, massage this as you want, and reindex your dataframe:
>>> cols = df.columns.tolist()
>>> cols = [cols[-1]]+cols[:-1] # or whatever change you need
>>> df.reindex(columns=cols)
n l v
0 0 a 1
1 0 b 2
2 0 c 1
3 0 d 2
EDIT: this can be done in one line ; however, this looks a bit ugly. Maybe some cleaner proposal may come...
>>> df.reindex(columns=['n']+df.columns[:-1].tolist())
n l v
0 0 a 1
1 0 b 2
2 0 c 1
3 0 d 2
My personal approach, which seems to work for all cases, is testing for the presence of members that will all only be present for strings.
function isString(x) {
return (typeof x == 'string' || typeof x == 'object' && x.toUpperCase && x.substr && x.charAt && x.trim && x.replace ? true : false);
}
See: http://jsfiddle.net/x75uy0o6/
I'd like to know if this method has flaws, but it has served me well for years.
Kotlin Version
Use below snippet to add a drawable left to the button:
val drawable = ContextCompat.getDrawable(context, R.drawable.ic_favorite_white_16dp)
button.setCompoundDrawablesWithIntrinsicBounds(drawable, null, null, null)
.
Important Point in Using Android Vector Drawable
When you are using an android vector drawable and want to have backward compatibility for API below 21, add the following codes to:
In app level build.gradle
:
android {
defaultConfig {
vectorDrawables.useSupportLibrary = true
}
}
In Application class:
class MyApplication : Application() {
override fun onCreate() {
super.onCreate()
AppCompatDelegate.setCompatVectorFromResourcesEnabled(true)
}
}
Python Iterative approach by removing all prime factors from the number
def primef(n):
if n <= 3:
return n
if n % 2 == 0:
return primef(n/2)
elif n % 3 ==0:
return primef(n/3)
else:
for i in range(5, int((n)**0.5) + 1, 6):
#print i
if n % i == 0:
return primef(n/i)
if n % (i + 2) == 0:
return primef(n/(i+2))
return n
When you're serving an .ico file to be used as a favicon, it doesn't matter. All major browsers recognize both mime types correctly. So you could put:
<!-- IE -->
<link rel="shortcut icon" type="image/x-icon" href="favicon.ico" />
<!-- other browsers -->
<link rel="icon" type="image/x-icon" href="favicon.ico" />
or the same with image/vnd.microsoft.icon
, and it will work with all browsers.
Note: There is no IANA specification for the MIME-type image/x-icon
, so it does appear that it is a little more unofficial than image/vnd.microsoft.icon
.
The only case in which there is a difference is if you were trying to use an .ico file in an <img>
tag (which is pretty unusual).
Based on previous testing, some browsers would only display .ico files as images when they were served with the MIME-type image/x-icon
. More recent tests show: Chromium, Firefox and Edge are fine with both content types, IE11 is not. If you can, just avoid using ico
files as images, use png
.
Sample code testing div() and combined division & mod. I compiled these with gcc -O3, I had to add the call to doNothing to stop the compiler from optimising everything out (output would be 0 for the division + mod solution).
Take it with a grain of salt:
#include <stdio.h>
#include <sys/time.h>
#include <stdlib.h>
extern doNothing(int,int); // Empty function in another compilation unit
int main() {
int i;
struct timeval timeval;
struct timeval timeval2;
div_t result;
gettimeofday(&timeval,NULL);
for (i = 0; i < 1000; ++i) {
result = div(i,3);
doNothing(result.quot,result.rem);
}
gettimeofday(&timeval2,NULL);
printf("%d",timeval2.tv_usec - timeval.tv_usec);
}
Outputs: 150
#include <stdio.h>
#include <sys/time.h>
#include <stdlib.h>
extern doNothing(int,int); // Empty function in another compilation unit
int main() {
int i;
struct timeval timeval;
struct timeval timeval2;
int dividend;
int rem;
gettimeofday(&timeval,NULL);
for (i = 0; i < 1000; ++i) {
dividend = i / 3;
rem = i % 3;
doNothing(dividend,rem);
}
gettimeofday(&timeval2,NULL);
printf("%d",timeval2.tv_usec - timeval.tv_usec);
}
Outputs: 25
Try setting the charset on your Content-Type:
httpCon.setRequestProperty( "Content-Type", "multipart/form-data; charset=UTF-8; boundary=" + boundary );