void 0
mean?void
[MDN] is a prefix keyword that takes one argument and always returns undefined
.
Examples
void 0
void (0)
void "hello"
void (new Date())
//all will return undefined
It seems pretty useless, doesn't it? If it always returns undefined
, what's wrong with just using undefined
itself?
In a perfect world we would be able to safely just use undefined
: it's much simpler and easier to understand than void 0
. But in case you've never noticed before, this isn't a perfect world, especially when it comes to Javascript.
The problem with using undefined
was that undefined
is not a reserved word (it is actually a property of the global object [wtfjs]). That is, undefined
is a permissible variable name, so you could assign a new value to it at your own caprice.
alert(undefined); //alerts "undefined"
var undefined = "new value";
alert(undefined) // alerts "new value"
Note: This is no longer a problem in any environment that supports ECMAScript 5 or newer (i.e. in practice everywhere but IE 8), which defines the undefined
property of the global object as read-only (so it is only possible to shadow the variable in your own local scope). However, this information is still useful for backwards-compatibility purposes.
alert(window.hasOwnProperty('undefined')); // alerts "true"
alert(window.undefined); // alerts "undefined"
alert(undefined === window.undefined); // alerts "true"
var undefined = "new value";
alert(undefined); // alerts "new value"
alert(undefined === window.undefined); // alerts "false"
void
, on the other hand, cannot be overidden. void 0
will always return undefined
. undefined
, on the other hand, can be whatever Mr. Javascript decides he wants it to be.
void 0
, specifically?Why should we use void 0
? What's so special about 0
? Couldn't we just as easily use 1
, or 42
, or 1000000
or "Hello, world!"
?
And the answer is, yes, we could, and it would work just as well. The only benefit of passing in 0
instead of some other argument is that 0
is short and idiomatic.
Although undefined
can generally be trusted in modern JavaScript environments, there is one trivial advantage of void 0
: it's shorter. The difference is not enough to worry about when writing code but it can add up enough over large code bases that most code minifiers replace undefined
with void 0
to reduce the number of bytes sent to the browser.
That is not what the error message says. It says that you cannot use the =
operator. Try for instance LIKE 'foo'
.
Had that issue on Ubuntu 14.04, In my case I had also libXtst.so missing:
Could not open library 'libXtst.so': libXtst.so: cannot open shared object
file: No such file or directory
Make sure your symbolic link is pointing to proper file, cd /usr/lib/x86_64-linux-gnu and list libXtst with:
ll |grep libXtst
lrwxrwxrwx 1 root root 16 Oct 7 2016 libXtst.so.6 -> libXtst.so.6.1.0
-rw-r--r-- 1 root root 22880 Aug 16 2013 libXtst.so.6.1.0
Then just create proper symbolic link using:
sudo ln -s libXtst.so.6 libXtst.so
List again:
ll | grep libXtst
lrwxrwxrwx 1 root root 12 Sep 20 10:23 libXtst -> libXtst.so.6
lrwxrwxrwx 1 root root 12 Sep 20 10:23 libXtst.so -> libXtst.so.6
lrwxrwxrwx 1 root root 16 Oct 7 2016 libXtst.so.6 -> libXtst.so.6.1.0
-rw-r--r-- 1 root root 22880 Aug 16 2013 libXtst.so.6.1.0
all set!
I have a Samsung Galaxy Tab 2 7.0 with Android 4.1.1. Apparently it does NOT sync to ntp. I loaded an app that says my tablet is 20 seconds off of ntp, but it can't set it unless I root the device.
std::vector<CustomClass *> whatever(20000);
or:
std::vector<CustomClass *> whatever;
whatever.reserve(20000);
The former sets the actual size of the array -- i.e., makes it a vector of 20000 pointers. The latter leaves the vector empty, but reserves space for 20000 pointers, so you can insert (up to) that many without it having to reallocate.
At least in my experience, it's fairly unusual for either of these to make a huge difference in performance--but either can affect correctness under some circumstances. In particular, as long as no reallocation takes place, iterators into the vector are guaranteed to remain valid, and once you've set the size/reserved space, you're guaranteed there won't be any reallocations as long as you don't increase the size beyond that.
If you use json_decode($string, true)
, you will get no objects, but everything as an associative or number indexed array. Way easier to handle, as the stdObject provided by PHP is nothing but a dumb container with public properties, which cannot be extended with your own functionality.
$array = json_decode($string, true);
echo $array['trends'][0]['name'];
The pack() method is defined in Window class in Java and it sizes the frame so that all its contents are at or above their preferred sizes.
The default expiry_date for google oauth2 access token is 1 hour. The expiry_date is in the Unix epoch time in milliseconds. If you want to read this in human readable format then you can simply check it here..Unix timestamp to human readable time
Solution that helped me is: do not map DispatcherServlet
to /*
, map it to /
. Final config is then:
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
...
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
It's best practice to hash passwords so they are not decryptable. This makes things slightly more difficult for attackers that may have gained access to your database or files.
If you must encrypt your data and have it decryptable, a guide to secure encryption/decryption is available at https://paragonie.com/white-paper/2015-secure-php-data-encryption. To summarize that link:
select from_unixtime(column,'%Y-%m-%d') from myTable;
A JTable normally forms the View part of an MVC implementation. You'll want to remove rows from your model. The JTable, which should be listening for these changes, will update to reflect this removal. Hence you won't find removeRow() or similar as a method on JTable.
It's true, there are also more complete option, like changing the name of the app for a sentence you want. Check this tutorial it can help:
http://www.firstdroid.com/2010/08/04/adding-progress-bar-on-webview-android-tutorials/
In that tutorial you have a complete example how to use the progressbar in a webview app.
Adrian.
Is there any way you could programatically apply a class to the object?
<object class="hasparams">
then do
object.hasparams
This one worked, double quotes when $user and $password are outside single quotes. Single quotes when inside a single quote statement.
mysql --user="$user" --password="$password" --database="$user" --execute='DROP DATABASE '$user'; CREATE DATABASE '$user';'
It has discussed many times in SO. In short, "%z" is not supported because platform not support it. My solution is a new one, just skip the time zone.:
datetime.datetime.strptime(re.sub(r"[+-]([0-9])+", "", "Tue May 08 15:14:45 +0800 2012"),"%a %b %d %H:%M:%S %Y")
Had the same issue where I have changes in a local branch where I wanted to revert just one file. What worked for me was -
(feature/target_branch below is where I have all my changes including those I wanted to undo for a specific file)
(origin/feature/target_branch is the remote branch where I want to push my changes to)
(feature/staging is my temporary staging branch where I will be pushing from all my wanted changes excluding the change to that one file)
Create a local branch from my origin/feature/target_branch - called it feature/staging
Merged my working local branch feature/target_branch to the feature/staging branch
Checked out feature/staging then git reset --soft ORIG_HEAD (Now all changes from the feature/staging' will be staged but uncommitted.)
Unstaged the file which I have previously checked in with unnecessary changes
Changed the upstream branch for feature/staging to origin/feature/target_branch
Committed the rest of the staged changes and pushed upstream to my remote origin/feature/target_branch
The short answer is that you can't do it using JavaScript alone. You'd need a server-side handler to connect with the SMTP server to actually send the mail. There are many simple mail scripts online, such as this one for PHP:
Using a script like that, you'd POST the contents of your web form to the script, using a function like this:
And then the script would take those values, plus a username and password for the mail server, and connect to the server to send the mail.
If you are downloading samples from developer.chrome.com its possible that your actual folder is contained in a folder with the same name and this is creating a problem. For example your extracted sample extension named tabCapture will lool like this:
C:\Users\...\tabCapture\tabCapture
The SQL WITH clause was introduced by Oracle in the Oracle 9i release 2 database. The SQL WITH clause allows you to give a sub-query block a name (a process also called sub-query refactoring), which can be referenced in several places within the main SQL query. The name assigned to the sub-query is treated as though it was an inline view or table. The SQL WITH clause is basically a drop-in replacement to the normal sub-query.
Syntax For The SQL WITH Clause
The following is the syntax of the SQL WITH clause when using a single sub-query alias.
WITH <alias_name> AS (sql_subquery_statement)
SELECT column_list FROM <alias_name>[,table_name]
[WHERE <join_condition>]
When using multiple sub-query aliases, the syntax is as follows.
WITH <alias_name_A> AS (sql_subquery_statement),
<alias_name_B> AS(sql_subquery_statement_from_alias_name_A
or sql_subquery_statement )
SELECT <column_list>
FROM <alias_name_A>, <alias_name_B> [,table_names]
[WHERE <join_condition>]
In the syntax documentation above, the occurrences of alias_name
is a meaningful name you would give to the sub-query after the AS clause. Each sub-query should be separated with a comma Example for WITH statement. The rest of the queries follow the standard formats for simple and complex SQL SELECT queries.
For more information: http://www.brighthub.com/internet/web-development/articles/91893.aspx
This is how I solved this annoying issue:
I changed the PATH
variable as @sagar suggested in his 2nd option, but still I got different PATH
value than I expected.
Eventually I found out that it was the EnvInject
plugin that replaced my PATH
variable!
So I could either uninstall EnvInject
or just use it to inject the PATH variable.
As many of our Jenkins jobs use that plugin, I didn't want to uninstall it...
So I created a file: environment_variables.properties
under my Jenkins home directory.
This file contained the path environment value that I needed:
PATH=$PATH:/usr/local/git/bin/
.
From the Jenkins web interface: Manage Jenkins -> Configure System
.
In that screen - I ticked the Prepare jobs environment
option, and in the Properties File Path
field I entered the path to my file: /var/lib/jenkins/environment_variables.properties
.
This way every Jenkins job we have receive whatever variables I put in this environment_variables.properties
file.
You only have to add group = 1
into the ggplot or geom_line aes().
For line graphs, the data points must be grouped so that it knows which points to connect. In this case, it is simple -- all points should be connected, so group=1. When more variables are used and multiple lines are drawn, the grouping for lines is usually done by variable.
Reference: Cookbook for R, Chapter: Graphs Bar_and_line_graphs_(ggplot2), Line graphs.
Try this:
plot5 <- ggplot(df, aes(year, pollution, group = 1)) +
geom_point() +
geom_line() +
labs(x = "Year", y = "Particulate matter emissions (tons)",
title = "Motor vehicle emissions in Baltimore")
You cannot set a maximum value (other than choosing a datatype which cannot hold large numbers, but there are none that have the limit you're asking for). You can check that with LAST_INSERT_ID() after inserting to get the id of the newly created member, and if it is too big handle it in your application code (e.g., delete and reject the member).
Why do you want an upper limit?
For files encoding...
public class FRomUtf8ToIso {
static File input = new File("C:/Users/admin/Desktop/pippo.txt");
static File output = new File("C:/Users/admin/Desktop/ciccio.txt");
public static void main(String[] args) throws IOException {
BufferedReader br = null;
FileWriter fileWriter = new FileWriter(output);
try {
String sCurrentLine;
br = new BufferedReader(new FileReader( input ));
int i= 0;
while ((sCurrentLine = br.readLine()) != null) {
byte[] isoB = encode( sCurrentLine.getBytes() );
fileWriter.write(new String(isoB, Charset.forName("ISO-8859-15") ) );
fileWriter.write("\n");
System.out.println( i++ );
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
fileWriter.flush();
fileWriter.close();
if (br != null)br.close();
} catch (IOException ex) {
ex.printStackTrace();
}
}
}
static byte[] encode(byte[] arr){
Charset utf8charset = Charset.forName("UTF-8");
Charset iso88591charset = Charset.forName("ISO-8859-15");
ByteBuffer inputBuffer = ByteBuffer.wrap( arr );
// decode UTF-8
CharBuffer data = utf8charset.decode(inputBuffer);
// encode ISO-8559-1
ByteBuffer outputBuffer = iso88591charset.encode(data);
byte[] outputData = outputBuffer.array();
return outputData;
}
}
Run this command
sudo pip install mysql-python;
now you can run your command.
python manage.py startapp filename;
xargs and seq will help
function __run_times { seq 1 $1| { shift; xargs -i -- "$@"; } }
the view :
abon@abon:~$ __run_times 3 echo hello world
hello world
hello world
hello world
Shouldn't you be setting identity_Insert ON, inserting the records and then turning it back off?
Like this:
set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
SET IDENTITY_INSERT tbl_content ON
GO
ALTER procedure [dbo].[spInsertDeletedIntoTBLContent]
@ContentID int,
SET IDENTITY_INSERT tbl_content ON
...insert command...
SET IDENTITY_INSERT tbl_content OFF
I use the following function to format requests. It's like @AntonioHerraizS except it will pretty-print JSON objects in the body as well, and it labels all parts of the request.
format_json = functools.partial(json.dumps, indent=2, sort_keys=True)
indent = functools.partial(textwrap.indent, prefix=' ')
def format_prepared_request(req):
"""Pretty-format 'requests.PreparedRequest'
Example:
res = requests.post(...)
print(format_prepared_request(res.request))
req = requests.Request(...)
req = req.prepare()
print(format_prepared_request(res.request))
"""
headers = '\n'.join(f'{k}: {v}' for k, v in req.headers.items())
content_type = req.headers.get('Content-Type', '')
if 'application/json' in content_type:
try:
body = format_json(json.loads(req.body))
except json.JSONDecodeError:
body = req.body
else:
body = req.body
s = textwrap.dedent("""
REQUEST
=======
endpoint: {method} {url}
headers:
{headers}
body:
{body}
=======
""").strip()
s = s.format(
method=req.method,
url=req.url,
headers=indent(headers),
body=indent(body),
)
return s
And I have a similar function to format the response:
def format_response(resp):
"""Pretty-format 'requests.Response'"""
headers = '\n'.join(f'{k}: {v}' for k, v in resp.headers.items())
content_type = resp.headers.get('Content-Type', '')
if 'application/json' in content_type:
try:
body = format_json(resp.json())
except json.JSONDecodeError:
body = resp.text
else:
body = resp.text
s = textwrap.dedent("""
RESPONSE
========
status_code: {status_code}
headers:
{headers}
body:
{body}
========
""").strip()
s = s.format(
status_code=resp.status_code,
headers=indent(headers),
body=indent(body),
)
return s
This problem has nothing to do with the linker, so modifying it's setting won't affect the outcome. You're getting this because I assume you're trying to target x86 but for one reason or another wxcode_msw28d_freechart.lib is being built as an x64 file.
Try looking at wxcode_msw28d_freechart.lib and whatever source code it derives from. Your problem is happening there. See if there are some special build steps that are using the wrong set of tools (x64 instead of x86).
It happens when your password is missing.
Steps to change password when you have forgotten:
Stop MySQL Server (on Linux):
sudo systemctl stop mysql
Start the database without loading the grant tables or enabling networking:
sudo mysqld_safe --skip-grant-tables --skip-networking &
The ampersand at the end of this command will make this process run in the
background so you can continue to use your terminal and run #mysql -u root, it will not ask for password.
If you get error like as below:
2018-02-12T08:57:39.826071Z mysqld_safe Directory '/var/run/mysqld' for UNIX
socket file don't exists.
mysql -u root
ERROR 2002 (HY000): Can't connect to local MySQL server through socket
'/var/run/mysqld/mysqld.sock' (2)
[1]+ Exit 1
Make MySQL service directory.
sudo mkdir /var/run/mysqld
Give MySQL user permission to write to the service directory.
sudo chown mysql: /var/run/mysqld
Run the same command in step 2 to run mysql in background.
Run mysql -u root you will get mysql console without entering password.
Run these commands
FLUSH PRIVILEGES;
For MySQL 5.7.6 and newer
ALTER USER 'root'@'localhost' IDENTIFIED BY 'new_password';
For MySQL 5.7.5 and older
SET PASSWORD FOR 'root'@'localhost' = PASSWORD('new_password');
If the ALTER USER command doesn't work use:
UPDATE mysql.user SET authentication_string = PASSWORD('new_password') WHERE User = 'root' AND Host = 'localhost';
Now exit
To stop instance started manually
sudo kill `cat /var/run/mysqld/mysqld.pid`
Restart mysql
sudo systemctl start mysql
Just found out the answer and thought of updating here. Just need to do the following.
public class AddressBook: DbContext
{
protected override void OnModelCreating(ModelBuilder modelBuilder)
{
modelBuilder.IncludeMetadataInDatabase = false;
}
}
Ok, I think I was able to find a proper solution for that.
Now, instead of sending <Link/>
as prop to Document, I send <NextLink/>
which is a custom wrapper for the react-router Link. By doing that, I'm able to have the right arrow as part of the Link structure while still avoiding to have routing code inside Document object.
The updated code looks like follows:
//in NextLink.js
var React = require('react');
var Right = require('./Right');
var NextLink = React.createClass({
propTypes: {
link: React.PropTypes.node.isRequired
},
contextTypes: {
transitionTo: React.PropTypes.func.isRequired
},
_onClickRight: function() {
this.context.transitionTo(this.props.link.props.to);
},
render: function() {
return (
<div>
{this.props.link}
<Right onClick={this._onClickRight} />
</div>
);
}
});
module.exports = NextLink;
...
//in MasterPage.js
var sampleLink = <Link to="/sample">Go To Sample</Link>
var nextLink = <NextLink link={sampleLink} />
<Document next={nextLink} />
//in Document.js
...
var Document = React.createClass({
render: function() {
return (
...
<div>{this.props.next}</div>
...
);
}
});
...
P.S: If you are using the latest version of react-router you may need to use this.context.router.transitionTo
instead of this.context.transitionTo
. This code will work fine for react-router version 0.12.X.
You can use array to handle several button click listener in android like this: here i am setting button click listener for n buttons by using array as:
Button btn[] = new Button[n];
NOTE: n is a constant positive integer
Code example:
//class androidMultipleButtonActions
package a.b.c.app;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class androidMultipleButtonActions extends Activity implements OnClickListener{
Button btn[] = new Button[3];
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
btn[0] = (Button) findViewById(R.id.Button1);
btn[1] = (Button) findViewById(R.id.Button2);
btn[2] = (Button) findViewById(R.id.Button3);
for(int i=0; i<3; i++){
btn[i].setOnClickListener(this);
}
}
public void onClick(View v) {
if(v == findViewById(R.id.Button1)){
//do here what u wanna do.
}
else if(v == findViewById(R.id.Button2)){
//do here what u wanna do.
}
else if(v == findViewById(R.id.Button3)){
//do here what u wanna do.
}
}
}
Note: First write an main.xml file if u dont know how to write please mail to: [email protected]
Use char instead of byte:
System.out.println("string " + (char)0x63);
Or if you want to be a Unicode puritan, you use codepoints:
System.out.println("string " + new String(new int[]{ 0x63 }, 0, 1));
And if you like the old skool US-ASCII "every byte is a character" idea:
System.out.println("string " + new String(new byte[]{ (byte)0x63 },
StandardCharsets.US_ASCII));
Avoid using the String(byte[])
constructor recommended in other answers; it relies on the default charset. Circumstances could arise where 0x63
actually isn't the character c.
It is there to specify another column as the default id column of the other table, e.g. consider the following
TableA
id int identity
tableb_key varchar
TableB
id int identity
key varchar unique
// in class for TableA
@JoinColumn(name="tableb_key", referencedColumnName="key")
export PATH=/usr/pgsql-9.2/bin:$PATH
The program executable psql
is in the directory /usr/pgsql-9.2/bin
, and that directory is not included in the path by default, so we have to tell our shell (terminal) program where to find psql
. When most packages are installed, they are added to an existing path, such as /usr/local/bin
, but not this program.
So we have to add the program's path to the shell PATH variable if we do not want to have to type the complete path to the program every time we execute it.
This line should typically be added to theshell startup script, which for the bash shell will be in the file ~/.bashrc
.
Use
border-collapse:collapse
as Nathan wrote and you need to set
td { border-bottom: 1px solid #000; }
When you open a transaction nothing gets locked by itself. But if you execute some queries inside that transaction, depending on the isolation level, some rows, tables or pages get locked so it will affect other queries that try to access them from other transactions.
Method 4 is my preferred method. The short circuit of the && operator makes the code the most readable. Method 3, Catching NullPointerException, is frowned upon most of the time when a simple null check would suffice.
Drawing from Van Nguyen's answer above, use update instead of save. This gives you access to the upsert option.
NOTE: This method overrides the entire document when found (From the docs)
var conditions = { name: 'borne' } , update = { $inc: { visits: 1 }} , options = { multi: true };
Model.update(conditions, update, options, callback);
function callback (err, numAffected) { // numAffected is the number of updated documents })
If you want to update a selection of the document, but not the whole thing, you can use the $set method with update. (again, From the docs)... So, if you want to set...
var query = { name: 'borne' }; Model.update(query, ***{ name: 'jason borne' }***, options, callback)
Send it as...
Model.update(query, ***{ $set: { name: 'jason borne' }}***, options, callback)
This helps prevent accidentally overwriting all of your document(s) with { name: 'jason borne' }
.
There are several options. If performance is a concern, test them to see which works fastest in a large loop.
double Adjust(double input)
{
double whole = Math.Truncate(input);
double remainder = input - whole;
if (remainder < 0.3)
{
remainder = 0;
}
else if (remainder < 0.8)
{
remainder = 0.5;
}
else
{
remainder = 1;
}
return whole + remainder;
}
The following test works in Chrome 16 (dev branch) on X86 and Chrome 15 on Mac OSX Lion
Considere use DataBindingComplete event for update the style. The next code change the style of the cell:
private void Grid_DataBindingComplete(object sender, DataGridViewBindingCompleteEventArgs e)
{
this.Grid.Rows[2].Cells[1].Style.BackColor = Color.Green;
}
The regex validation for india should make sure that +91 is used, then make sure that 7, 8,9 is used after +91 and finally followed by 9 digits.
/^+91(7\d|8\d|9\d)\d{9}$/
Get the more information from below link
w3schools.com/jsref/jsref_obj_regexp.asp
how to determine if a commit with particular hash have been pushed to the origin already?
# list remote branches that contain $commit
git branch -r --contains $commit
\n
is a line break. /n
is not.
use of \n
with
Now if you are trying to echo string to the page:
echo "kings \n garden";
output will be:
kings garden
you won't get garden
in new line because PHP is a server-side language, and you are sending output as HTML, you need to create line breaks in HTML. HTML doesn't understand \n
. You need to use the nl2br()
function for that.
What it does is:
Returns string with
<br />
or<br>
inserted before all newlines (\r\n, \n\r, \n and \r).
echo nl2br ("kings \n garden");
kings
garden
Note Make sure you're echoing/printing
\n
in double quotes, else it will be rendered literally as \n. because php interpreter parse string in single quote with concept of as is
so "\n" not '\n'
Now if you echo to text file you can use just \n
and it will echo to a new line, like:
$myfile = fopen("test.txt", "w+") ;
$txt = "kings \n garden";
fwrite($myfile, $txt);
fclose($myfile);
output will be:
kings
garden
There are several good answers on here but I wanted to add one since it may be helpful for users like me who have Tomcat installed as a service on a Windows machine.
Option 3 here: http://www.codejava.net/servers/tomcat/4-ways-to-change-jre-for-tomcat
Basically, open tomcatw.exe and point Tomcat to the version of the JVM you need to use then restart the service. Ensure your deployed applications still work as well.
What are some common uses for this language?
Rapid application development.
If you want to know "why Haskell?", then you need to consider advantages of functional programming languages (taken from https://c2.com/cgi/wiki?AdvantagesOfFunctionalProgramming):
Functional programs tend to be much more terse than their ImperativeLanguage counterparts. Often this leads to enhanced programmer productivity
FP encourages quick prototyping. As such, I think it is the best software design paradigm for ExtremeProgrammers... but what do I know?
FP is modular in the dimension of functionality, where ObjectOrientedProgramming is modular in the dimension of different components.
The ability to have your cake and eat it. Imagine you have a complex OO system processing messages - every component might make state changes depending on the message and then forward the message to some objects it has links to. Wouldn't it be just too cool to be able to easily roll back every change if some object deep in the call hierarchy decided the message is flawed? How about having a history of different states?
Many housekeeping tasks made for you: deconstructing data structures (PatternMatching), storing variable bindings (LexicalScope with closures), strong typing (TypeInference), GarbageCollection, storage allocation, whether to use boxed (pointer-to-value) or unboxed (value directly) representation...
Safe multithreading! Immutable data structures are not subject to data race conditions, and consequently don't have to be protected by locks. If you are always allocating new objects, rather than destructively manipulating existing ones, the locking can be hidden in the allocation and GarbageCollection system.
Apart from this Haskell has its own advantages such as:
1 / 0
as the first item of a list and it will still work if you only used the second item.You can check out following links:
Use LOWER function to convert the strings to lower case before comparing.
Try this:
SELECT id
FROM groups
WHERE LOWER(name)=LOWER('Administrator')
>df1.show()
+-----+--------------------+--------+----------+-----------+
|floor| timestamp| uid| x| y|
+-----+--------------------+--------+----------+-----------+
| 1|2014-07-19T16:00:...|600dfbe2| 103.79211|71.50419418|
| 1|2014-07-19T16:00:...|5e7b40e1| 110.33613|100.6828393|
| 1|2014-07-19T16:00:...|285d22e4|110.066315|86.48873585|
| 1|2014-07-19T16:00:...|74d917a1| 103.78499|71.45633073|
>row1 = df1.agg({"x": "max"}).collect()[0]
>print row1
Row(max(x)=110.33613)
>print row1["max(x)"]
110.33613
The answer is almost the same as method3. but seems the "asDict()" in method3 can be removed
Image provides an abstract access to an arbitrary image , it defines a set of methods that can loggically be applied upon any implementation of Image. Its not bounded to any particular image format or implementation . Bitmap is a specific implementation to the image abstract class which encapsulate windows GDI bitmap object. Bitmap is just a specific implementation to the Image abstract class which relay on the GDI bitmap Object.
You could for example , Create your own implementation to the Image abstract , by inheriting from the Image class and implementing the abstract methods.
Anyway , this is just a simple basic use of OOP , it shouldn't be hard to catch.
Using a stupid macro trick to make record definitions easier to maintain.
#define COLUMNS(S,E) [(E) - (S) + 1]
typedef struct
{
char studentNumber COLUMNS( 1, 9);
char firstName COLUMNS(10, 30);
char lastName COLUMNS(31, 51);
} StudentRecord;
I think you can use db.collection.distinct(fields,query)
You will be able to get the distinct values in your case for NetworkID.
It should be something like this :
Db.collection.distinct('NetworkID')
Can we see your import
block? because it seems that you have imported the wrong Iterator
class.
The one you should use is java.util.Iterator
To make sure, try:
java.util.Iterator iter = hm.keySet().iterator();
I personally suggest the following:
Map Declaration using Generics
and declaration using the Interface Map<K,V>
and instance creation using the desired implementation HashMap<K,V>
Map<Integer, String> hm = new HashMap<>();
and for the loop:
for (Integer key : hm.keySet()) {
System.out.println("Key = " + key + " - " + hm.get(key));
}
UPDATE 3/5/2015
Found out that iterating over the Entry set will be better performance wise:
for (Map.Entry<Integer, String> entry : hm.entrySet()) {
Integer key = entry.getKey();
String value = entry.getValue();
}
UPDATE 10/3/2017
For Java8 and streams, your solution will be (Thanks @Shihe Zhang)
hm.forEach((key, value) -> System.out.println(key + ": " + value))
Github with android studio
/*For New - Run these command in terminal*/
echo "# Your Repository" >> README.md
git init
git add README.md
git commit -m "first commit"
git remote add origin https://github.com/username/repository.git
git push -u origin master
/*For Exist - Run these command in terminal*/
git remote add origin https://github.com/username/repository.git
git push -u origin master
//git push -f origin master
//git push origin master --force
/*For Update - Run these command in terminal*/
git add .
git commit -m "your message"
git push
I had following Problem: Even if I set
xdebug.remote_enable=0
Xdebug-Error-Message-Decoration was shown.
My solution:
xdebug.default_enable=0
Only if I use this Flag, Xdebug was disabled.
Numbering an items in the java array should start from zero. This was i think we can have access to Integer.MAX_VALUE+1 an items.
string cleanedString = System.Text.RegularExpressions.Regex.Replace(dirtyString,@"\s+"," ");
@crobar, you are right that there is a dearth of multi-file examples, so I decided to share the following in the hopes that it helps others:
::::::::::::::
main.cpp
::::::::::::::
#include <iostream>
#include "UseSomething.h"
#include "Something.h"
int main()
{
UseSomething y;
std::cout << y.getValue() << '\n';
}
::::::::::::::
Something.h
::::::::::::::
#ifndef SOMETHING_H_
#define SOMETHING_H_
class Something
{
private:
static int s_value;
public:
static int getValue() { return s_value; } // static member function
};
#endif
::::::::::::::
Something.cpp
::::::::::::::
#include "Something.h"
int Something::s_value = 1; // initializer
::::::::::::::
UseSomething.h
::::::::::::::
#ifndef USESOMETHING_H_
#define USESOMETHING_H_
class UseSomething
{
public:
int getValue();
};
#endif
::::::::::::::
UseSomething.cpp
::::::::::::::
#include "UseSomething.h"
#include "Something.h"
int UseSomething::getValue()
{
return(Something::getValue());
}
To invoke the procedure from the SQLPlus command line, try one of these:
CALL test_sp_1();
EXEC test_sp_1
Eclipse PDT is very nice.
Short form:
.zip
is an archive format using, usually, the Deflate compression method. The .gz
gzip format is for single files, also using the Deflate compression method. Often gzip is used in combination with tar to make a compressed archive format, .tar.gz
. The zlib library provides Deflate compression and decompression code for use by zip, gzip, png (which uses the zlib wrapper on deflate data), and many other applications.
Long form:
The ZIP format was developed by Phil Katz as an open format with an open specification, where his implementation, PKZIP, was shareware. It is an archive format that stores files and their directory structure, where each file is individually compressed. The file type is .zip
. The files, as well as the directory structure, can optionally be encrypted.
The ZIP format supports several compression methods:
0 - The file is stored (no compression)
1 - The file is Shrunk
2 - The file is Reduced with compression factor 1
3 - The file is Reduced with compression factor 2
4 - The file is Reduced with compression factor 3
5 - The file is Reduced with compression factor 4
6 - The file is Imploded
7 - Reserved for Tokenizing compression algorithm
8 - The file is Deflated
9 - Enhanced Deflating using Deflate64(tm)
10 - PKWARE Data Compression Library Imploding (old IBM TERSE)
11 - Reserved by PKWARE
12 - File is compressed using BZIP2 algorithm
13 - Reserved by PKWARE
14 - LZMA
15 - Reserved by PKWARE
16 - IBM z/OS CMPSC Compression
17 - Reserved by PKWARE
18 - File is compressed using IBM TERSE (new)
19 - IBM LZ77 z Architecture
20 - deprecated (use method 93 for zstd)
93 - Zstandard (zstd) Compression
94 - MP3 Compression
95 - XZ Compression
96 - JPEG variant
97 - WavPack compressed data
98 - PPMd version I, Rev 1
99 - AE-x encryption marker (see APPENDIX E)
Methods 1 to 7 are historical and are not in use. Methods 9 through 98 are relatively recent additions and are in varying, small amounts of use. The only method in truly widespread use in the ZIP format is method 8, Deflate, and to some smaller extent method 0, which is no compression at all. Virtually every .zip
file that you will come across in the wild will use exclusively methods 8 and 0, likely just method 8. (Method 8 also has a means to effectively store the data with no compression and relatively little expansion, and Method 0 cannot be streamed whereas Method 8 can be.)
The ISO/IEC 21320-1:2015 standard for file containers is a restricted zip format, such as used in Java archive files (.jar), Office Open XML files (Microsoft Office .docx, .xlsx, .pptx), Office Document Format files (.odt, .ods, .odp), and EPUB files (.epub). That standard limits the compression methods to 0 and 8, as well as other constraints such as no encryption or signatures.
Around 1990, the Info-ZIP group wrote portable, free, open-source implementations of zip
and unzip
utilities, supporting compression with the Deflate format, and decompression of that and the earlier formats. This greatly expanded the use of the .zip
format.
In the early '90s, the gzip format was developed as a replacement for the Unix compress
utility, derived from the Deflate code in the Info-ZIP utilities. Unix compress
was designed to compress a single file or stream, appending a .Z
to the file name. compress
uses the LZW compression algorithm, which at the time was under patent and its free use was in dispute by the patent holders. Though some specific implementations of Deflate were patented by Phil Katz, the format was not, and so it was possible to write a Deflate implementation that did not infringe on any patents. That implementation has not been so challenged in the last 20+ years. The Unix gzip
utility was intended as a drop-in replacement for compress
, and in fact is able to decompress compress
-compressed data (assuming that you were able to parse that sentence). gzip
appends a .gz
to the file name. gzip
uses the Deflate compressed data format, which compresses quite a bit better than Unix compress
, has very fast decompression, and adds a CRC-32 as an integrity check for the data. The header format also permits the storage of more information than the compress
format allowed, such as the original file name and the file modification time.
Though compress
only compresses a single file, it was common to use the tar
utility to create an archive of files, their attributes, and their directory structure into a single .tar
file, and to then compress it with compress
to make a .tar.Z
file. In fact, the tar
utility had and still has an option to do the compression at the same time, instead of having to pipe the output of tar
to compress
. This all carried forward to the gzip format, and tar
has an option to compress directly to the .tar.gz
format. The tar.gz
format compresses better than the .zip
approach, since the compression of a .tar
can take advantage of redundancy across files, especially many small files. .tar.gz
is the most common archive format in use on Unix due to its very high portability, but there are more effective compression methods in use as well, so you will often see .tar.bz2
and .tar.xz
archives.
Unlike .tar
, .zip
has a central directory at the end, which provides a list of the contents. That and the separate compression provides random access to the individual entries in a .zip
file. A .tar
file would have to be decompressed and scanned from start to end in order to build a directory, which is how a .tar
file is listed.
Shortly after the introduction of gzip, around the mid-1990s, the same patent dispute called into question the free use of the .gif
image format, very widely used on bulletin boards and the World Wide Web (a new thing at the time). So a small group created the PNG losslessly compressed image format, with file type .png
, to replace .gif
. That format also uses the Deflate format for compression, which is applied after filters on the image data expose more of the redundancy. In order to promote widespread usage of the PNG format, two free code libraries were created. libpng and zlib. libpng handled all of the features of the PNG format, and zlib provided the compression and decompression code for use by libpng, as well as for other applications. zlib was adapted from the gzip
code.
All of the mentioned patents have since expired.
The zlib library supports Deflate compression and decompression, and three kinds of wrapping around the deflate streams. Those are: no wrapping at all ("raw" deflate), zlib wrapping, which is used in the PNG format data blocks, and gzip wrapping, to provide gzip routines for the programmer. The main difference between zlib and gzip wrapping is that the zlib wrapping is more compact, six bytes vs. a minimum of 18 bytes for gzip, and the integrity check, Adler-32, runs faster than the CRC-32 that gzip uses. Raw deflate is used by programs that read and write the .zip
format, which is another format that wraps around deflate compressed data.
zlib is now in wide use for data transmission and storage. For example, most HTTP transactions by servers and browsers compress and decompress the data using zlib, specifically HTTP header Content-Encoding: deflate
means deflate compression method wrapped inside the zlib data format.
Different implementations of deflate can result in different compressed output for the same input data, as evidenced by the existence of selectable compression levels that allow trading off compression effectiveness for CPU time. zlib and PKZIP are not the only implementations of deflate compression and decompression. Both the 7-Zip archiving utility and Google's zopfli library have the ability to use much more CPU time than zlib in order to squeeze out the last few bits possible when using the deflate format, reducing compressed sizes by a few percent as compared to zlib's highest compression level. The pigz utility, a parallel implementation of gzip, includes the option to use zlib (compression levels 1-9) or zopfli (compression level 11), and somewhat mitigates the time impact of using zopfli by splitting the compression of large files over multiple processors and cores.
VisualVM can show clear states of threads of a given JVM process
(My original answer was wrong, sorry for the bad math, see below the break.)
How about this?
The first 27 bits store the lowest number you have seen, then the difference to the next number seen, encoded as follows: 5 bits to store the number of bits used in storing the difference, then the difference. Use 00000 to indicate that you saw that number again.
This works because as more numbers are inserted, the average difference between numbers goes down, so you use less bits to store the difference as you add more numbers. I believe this is called a delta list.
The worst case I can think of is all numbers evenly spaced (by 100), e.g. Assuming 0 is the first number:
000000000000000000000000000 00111 1100100
^^^^^^^^^^^^^
a million times
27 + 1,000,000 * (5+7) bits = ~ 427k
Reddit to the rescue!
If all you had to do was sort them, this problem would be easy. It takes 122k (1 million bits) to store which numbers you have seen (0th bit on if 0 was seen, 2300th bit on if 2300 was seen, etc.
You read the numbers, store them in the bit field, and then shift the bits out while keeping a count.
BUT, you have to remember how many you have seen. I was inspired by the sublist answer above to come up with this scheme:
Instead of using one bit, use either 2 or 27 bits:
I think this works: if there are no duplicates, you have a 244k list. In the worst case you see each number twice (if you see one number three times, it shortens the rest of the list for you), that means you have seen 50,000 more than once, and you have seen 950,000 items 0 or 1 times.
50,000 * 27 + 950,000 * 2 = 396.7k.
You can make further improvements if you use the following encoding:
0 means you did not see the number 10 means you saw it once 11 is how you keep count
Which will, on average, result in 280.7k of storage.
EDIT: my Sunday morning math was wrong.
The worst case is we see 500,000 numbers twice, so the math becomes:
500,000 *27 + 500,000 *2 = 1.77M
The alternate encoding results in an average storage of
500,000 * 27 + 500,000 = 1.70M
: (
If you want to always prune
when you fetch
, I can suggest to use Aliases.
Just type git config -e
to open your editor and change the configuration for a specific project and add a section like
[alias]
pfetch = fetch --prune
the when you fetch with git pfetch
the prune will be done automatically.
The accepted answer did not work for me when using Django 1.4.4. Instead of the raw query, a reference to the Query object was returned: <django.db.models.sql.query.Query object at 0x10a4acd90>
.
The following returned the query:
>>> queryset = MyModel.objects.all()
>>> queryset.query.__str__()
When working under Linux the syntax below is right:
cd ~/My\ Code
However when you're executing your file, use the syntax below:
$ . cdcode
(just '.' and not './')
This should do the trick
export DEBIAN_FRONTEND=noninteractive
sudo -E apt-get -q -y install mysql-server
Of course, it leaves you with a blank root password - so you'll want to run something like
mysqladmin -u root password mysecretpasswordgoeshere
Afterwards to add a password to the account.
RFC 2396 section 4.1:
When a URI reference is used to perform a retrieval action on the identified resource, the optional fragment identifier, separated from the URI by a crosshatch ("#") character, consists of additional reference information to be interpreted by the user agent after the retrieval action has been successfully completed. As such, it is not part of a URI, but is often used in conjunction with a URI.
(emphasis added)
DOS's type
works like *nux's cat
, though just like cat
, it does dump the whole file, so it's not really a true tail
, but it's going to be available in a pinch without downloading/installing a true tail
substitute.
In case you cannot use different stylesheet by dynamically loading it, you can use this function to modify CSS class. Hope it helps you...
function changeCss(className, classValue) {
// we need invisible container to store additional css definitions
var cssMainContainer = $('#css-modifier-container');
if (cssMainContainer.length == 0) {
var cssMainContainer = $('<div id="css-modifier-container"></div>');
cssMainContainer.hide();
cssMainContainer.appendTo($('body'));
}
// and we need one div for each class
classContainer = cssMainContainer.find('div[data-class="' + className + '"]');
if (classContainer.length == 0) {
classContainer = $('<div data-class="' + className + '"></div>');
classContainer.appendTo(cssMainContainer);
}
// append additional style
classContainer.html('<style>' + className + ' {' + classValue + '}</style>');
}
This function will take any class name and replace any previously set values with the new value. Note, you can add multiple values by passing the following into classValue: "background: blue; color:yellow"
.
For Each row As DataGridViewRow In yourDGV.SelectedRows
yourDGV.Rows.Remove(row)
Next
This will delete all rows that had been selected.
You don't need to change the delimiter to display the right part of the string with cut
.
The -f
switch of the cut
command is the n-TH element separated by your delimiter : :
, so you can just type :
grep puddle2_1557936 | cut -d ":" -f2
Another solutions (adapt it a bit) if you want fun :
Using grep :
grep -oP 'puddle2_1557936:\K.*' <<< 'puddle2_1557936:/home/rogers.williams/folderz/puddle2'
/home/rogers.williams/folderz/puddle2
or still with look around regex
grep -oP '(?<=puddle2_1557936:).*' <<< 'puddle2_1557936:/home/rogers.williams/folderz/puddle2'
/home/rogers.williams/folderz/puddle2
or with perl :
perl -lne '/puddle2_1557936:(.*)/ and print $1' <<< 'puddle2_1557936:/home/rogers.williams/folderz/puddle2'
/home/rogers.williams/folderz/puddle2
or using ruby (thanks to glenn jackman)
ruby -F: -ane '/puddle2_1557936/ and puts $F[1]' <<< 'puddle2_1557936:/home/rogers.williams/folderz/puddle2'
/home/rogers.williams/folderz/puddle2
or with awk :
awk -F'puddle2_1557936:' '{print $2}' <<< 'puddle2_1557936:/home/rogers.williams/folderz/puddle2'
/home/rogers.williams/folderz/puddle2
or with python :
python -c 'import sys; print(sys.argv[1].split("puddle2_1557936:")[1])' 'puddle2_1557936:/home/rogers.williams/folderz/puddle2'
/home/rogers.williams/folderz/puddle2
or using only bash :
IFS=: read _ a <<< "puddle2_1557936:/home/rogers.williams/folderz/puddle2"
echo "$a"
/home/rogers.williams/folderz/puddle2
js<<EOF
var x = 'puddle2_1557936:/home/rogers.williams/folderz/puddle2'
print(x.substr(x.indexOf(":")+1))
EOF
/home/rogers.williams/folderz/puddle2
php -r 'preg_match("/puddle2_1557936:(.*)/", $argv[1], $m); echo "$m[1]\n";' 'puddle2_1557936:/home/rogers.williams/folderz/puddle2'
/home/rogers.williams/folderz/puddle2
Install the Python extension (Python should be installed in your system). To install the Python Extension, press Ctrl + Shift + X and then type 'python' and enter. Install the extension.
Open the file containing Python code. Yes! A .py file.
Now to run the .py code, simply right click on the editor screen and hit 'Run Python File in the Terminal'. That's it!
Now this is the additional step. Actually I got irritated by clicking again and again, so I set up the keyboard shortcut.
In Django 3.0 auto_now_add
seems to work with auto_now
reg_date=models.DateField(auto_now=True,blank=True)
It means node is not able to listen on defined port. Change it to something like 1234 or 2000 or 3000 and restart your server.
One important step is missing in all answers. I successfully upgraded with following steps:
var datos = $("#id_formulario").serialize();
$.ajax({
url: "url.php",
type: "POST",
dataType: "html",
data: datos,
success: function (prueba) {
alert("funciona!");
}//FIN SUCCES
});//FIN AJAX
you can use the code:
<asp:Button ID="Button2" runat="server"_x000D_
Text="Pulsa"_x000D_
OnClientClick="this.disabled=true"_x000D_
UseSubmitBehavior="False"/>
_x000D_
if nee submit
..._x000D_
<form id="form1" runat="server" onsubmit="deshabilita()">_x000D_
..._x000D_
<script type="text/javascript">_x000D_
function deshabilita()_x000D_
{_x000D_
var btn = "<%= Button1.ClientID %>";_x000D_
if (confirm("Confirme postback"))_x000D_
{_x000D_
document.getElementById(btn).disabled = true;_x000D_
return true;_x000D_
}_x000D_
return false;_x000D_
}_x000D_
</script>
_x000D_
v$session_longops
If you look for sofar != totalwork you'll see ones that haven't completed, but the entries aren't removed when the operation completes so you can see a lot of history there too.
Use \0
.
color: green\0;
I however do recommend conditional comments since you'd like to exclude IE9 as well and it's yet unpredictable whether this hack will affect IE9 as well or not.
Regardless, I've never had the need for an IE8 specific hack. What is it, the IE8 specific problem which you'd like to solve? Is it rendering in IE8 standards mode anyway? Its renderer is pretty good.
Use a SimpleDateFormat to parse the date and then print it out with a SimpleDateFormat withe the desired format.
Here's some code:
SimpleDateFormat format1 = new SimpleDateFormat("MM/dd/yyyy");
SimpleDateFormat format2 = new SimpleDateFormat("dd-MMM-yy");
Date date = format1.parse("05/01/1999");
System.out.println(format2.format(date));
Output:
01-May-99
Note: When you pass setDate, you are calling a method which assumes the datepicker has already been initialized on that object.
$(function() {
$('#date').datepicker();
$('#date').datepicker('setDate', '04/23/2014');
});
call me old fashion but why use a 3rd party library for a simple protocol. I've implemented POP3 readers in web based ASP.NET application with System.Net.Sockets.TCPClient and System.Net.Security.SslStream for the encryption and authentication. As far as protocols go, once you open up communication with the POP3 server, there are only a handful of commands that you have to deal with. It is a very easy protocol to work with.
If function Fiber really turns async function sleep into sync
Yes. Inside the fiber, the function waits before logging ok
. Fibers do not make async functions synchronous, but allow to write synchronous-looking code that uses async functions and then will run asynchronously inside a Fiber
.
From time to time I find the need to encapsulate an async function into a sync function in order to avoid massive global re-factoring.
You cannot. It is impossible to make asynchronous code synchronous. You will need to anticipate that in your global code, and write it in async style from the beginning. Whether you wrap the global code in a fiber, use promises, promise generators, or simple callbacks depends on your preferences.
My objective is to minimize impact on the caller when data acquisition method is changed from sync to async
Both promises and fibers can do that.
I know the question was asked 7 years and 9 months ago
but many posted solutions doesn't seem to work, for example using an <iframe>
works only with FireFox
and doesn't work with Chrome
.
Best solution:
The best working solution to open a file download pop-up in JavaScript
is to use a HTML
link element, with no need to append the link element to the document.body
as stated in other answers.
You can use the following function:
function downloadFile(filePath){
var link=document.createElement('a');
link.href = filePath;
link.download = filePath.substr(filePath.lastIndexOf('/') + 1);
link.click();
}
In my application, I am using it this way:
downloadFile('report/xls/myCustomReport.xlsx');
Working Demo:
function downloadFile(filePath) {_x000D_
var link = document.createElement('a');_x000D_
link.href = filePath;_x000D_
link.download = filePath.substr(filePath.lastIndexOf('/') + 1);_x000D_
link.click();_x000D_
}_x000D_
_x000D_
downloadFile("http://www.adobe.com/content/dam/Adobe/en/accessibility/pdfs/accessing-pdf-sr.pdf");
_x000D_
Note:
link.download
attribute so the browser doesn't
open the file in a new tab and fires the download pop-up.If you go there will be trouble, but if you stay it will be double.
I'd much rather go against some supposed non-plurals naming convention than name my table after something which might be a reserved word.
With React 16.8. We can do this with hooks like the following example
import React, { useState } from "react";
import "./styles.css";
export default function App() {
const options = [
"Monty Python and the Holy Grail",
"Monty Python's Life of Brian",
"Monty Python's The Meaning of Life"
];
const filmsByTati = [
{
id: 1,
title: "Jour de fête",
releasedYear: 1949
},
{
id: 2,
title: "Play time",
releasedYear: 1967
},
{
id: 3,
releasedYear: 1958,
title: "Mon Oncle"
}
];
const [selectedOption, setSelectedOption] = useState(options[0]);
const [selectedTatiFilm, setSelectedTatiFilm] = useState(filmsByTati[0]);
return (
<div className="App">
<h1>Select Example</h1>
<select
value={selectedOption}
onChange={(e) => setSelectedOption(e.target.value)}
>
{options.map((option) => (
<option key={option} value={option}>
{option}
</option>
))}
</select>
<span>Selected option: {selectedOption}</span>
<select
value={selectedTatiFilm}
onChange={(e) =>
setSelectedTatiFilm(
filmsByTati.find(film => (film.id == e.target.value))
)
}
>
{filmsByTati.map((film) => (
<option key={film.id} value={film.id}>
{film.title}
</option>
))}
</select>
<span>Selected option: {selectedTatiFilm.title}</span>
</div>
);
}
This looks interesting: MIT Java WordnetStemmer: http://projects.csail.mit.edu/jwi/api/edu/mit/jwi/morph/WordnetStemmer.html
Say you have a FaceView
which is some sort of image. You're going to have many of them on screen (or, in a collection view, table, stack view or other list).
In the class FaceView
you will need a variable "index"
class FaceView: UIView {
var index: Int
so that each FaceView can be self-aware of "which" face it is on screen.
So you must add var index: Int
to the class in question.
So you are adding many FaceView to your screen ...
let f = FaceView()
f.index = 73
.. you add f to your stack view, screen, or whatever.
You now add a click to f
f.addGestureRecognizer(UITapGestureRecognizer(target: self,
action: #selector(tapOneOfTheFaces)))
@objc func tapOneOfTheFaces(_ sender: UITapGestureRecognizer) {
if let tapped = sender.view as? CirclePerson {
print("we got it: \(tapped.index)")
You now know "which" face was clicked in your table, screen, stack view or whatever.
It's that easy.
Based on this thread I made this for my codeigniter project. It works just fine. You can have any function processed in the background.
A controller that accepts the async calls.
class Daemon extends CI_Controller
{
// Remember to disable CI's csrf-checks for this controller
function index( )
{
ignore_user_abort( 1 );
try
{
if ( strcmp( $_SERVER['REMOTE_ADDR'], $_SERVER['SERVER_ADDR'] ) != 0 && !in_array( $_SERVER['REMOTE_ADDR'], $this->config->item( 'proxy_ips' ) ) )
{
log_message( "error", "Daemon called from untrusted IP-address: " . $_SERVER['REMOTE_ADDR'] );
show_404( '/daemon' );
return;
}
$this->load->library( 'encrypt' );
$params = unserialize( urldecode( $this->encrypt->decode( $_POST['data'] ) ) );
unset( $_POST );
$model = array_shift( $params );
$method = array_shift( $params );
$this->load->model( $model );
if ( call_user_func_array( array( $this->$model, $method ), $params ) === FALSE )
{
log_message( "error", "Daemon could not call: " . $model . "::" . $method . "()" );
}
}
catch(Exception $e)
{
log_message( "error", "Daemon has error: " . $e->getMessage( ) . $e->getFile( ) . $e->getLine( ) );
}
}
}
And a library that does the async calls
class Daemon
{
public function execute_background( /* model, method, params */ )
{
$ci = &get_instance( );
// The callback URL (its ourselves)
$parts = parse_url( $ci->config->item( 'base_url' ) . "/daemon" );
if ( strcmp( $parts['scheme'], 'https' ) == 0 )
{
$port = 443;
$host = "ssl://" . $parts['host'];
}
else
{
$port = 80;
$host = $parts['host'];
}
if ( ( $fp = fsockopen( $host, isset( $parts['port'] ) ? $parts['port'] : $port, $errno, $errstr, 30 ) ) === FALSE )
{
throw new Exception( "Internal server error: background process could not be started" );
}
$ci->load->library( 'encrypt' );
$post_string = "data=" . urlencode( $ci->encrypt->encode( serialize( func_get_args( ) ) ) );
$out = "POST " . $parts['path'] . " HTTP/1.1\r\n";
$out .= "Host: " . $host . "\r\n";
$out .= "Content-Type: application/x-www-form-urlencoded\r\n";
$out .= "Content-Length: " . strlen( $post_string ) . "\r\n";
$out .= "Connection: Close\r\n\r\n";
$out .= $post_string;
fwrite( $fp, $out );
fclose( $fp );
}
}
This method can be called to process any model::method() in the 'background'. It uses variable arguments.
$this->load->library('daemon');
$this->daemon->execute_background( 'model', 'method', $arg1, $arg2, ... );
It can be a mathematical convention in the definition of an interval where square brackets mean "extremal inclusive" and round brackets "extremal exclusive".
The terms "background page", "popup", "content script" are still confusing you; I strongly suggest a more in-depth look at the Google Chrome Extensions Documentation.
Regarding your question if content scripts or background pages are the way to go:
Content scripts: Definitely
Content scripts are the only component of an extension that has access to the web-page's DOM.
Background page / Popup: Maybe (probably max. 1 of the two)
You may need to have the content script pass the DOM content to either a background page or the popup for further processing.
Let me repeat that I strongly recommend a more careful study of the available documentation!
That said, here is a sample extension that retrieves the DOM content on StackOverflow pages and sends it to the background page, which in turn prints it in the console:
background.js:
// Regex-pattern to check URLs against.
// It matches URLs like: http[s]://[...]stackoverflow.com[...]
var urlRegex = /^https?:\/\/(?:[^./?#]+\.)?stackoverflow\.com/;
// A function to use as callback
function doStuffWithDom(domContent) {
console.log('I received the following DOM content:\n' + domContent);
}
// When the browser-action button is clicked...
chrome.browserAction.onClicked.addListener(function (tab) {
// ...check the URL of the active tab against our pattern and...
if (urlRegex.test(tab.url)) {
// ...if it matches, send a message specifying a callback too
chrome.tabs.sendMessage(tab.id, {text: 'report_back'}, doStuffWithDom);
}
});
content.js:
// Listen for messages
chrome.runtime.onMessage.addListener(function (msg, sender, sendResponse) {
// If the received message has the expected format...
if (msg.text === 'report_back') {
// Call the specified callback, passing
// the web-page's DOM content as argument
sendResponse(document.all[0].outerHTML);
}
});
manifest.json:
{
"manifest_version": 2,
"name": "Test Extension",
"version": "0.0",
...
"background": {
"persistent": false,
"scripts": ["background.js"]
},
"content_scripts": [{
"matches": ["*://*.stackoverflow.com/*"],
"js": ["content.js"]
}],
"browser_action": {
"default_title": "Test Extension"
},
"permissions": ["activeTab"]
}
You can use the TelephonyManager
to do this:
TelephonyManager tm = (TelephonyManager)getSystemService(TELEPHONY_SERVICE);
String number = tm.getLine1Number();
The documentation for getLine1Number()
says this method will return null
if the number is "unavailable", but it does not say when the number might be unavailable.
You'll need to give your application permission to make this query by adding the following to your Manifest:
<uses-permission android:name="android.permission.READ_PHONE_STATE"/>
(You shouldn't use TelephonyManager.getDefault()
to get the TelephonyManager
as that is a private undocumented API call and may change in future.)
I encounter a problem trying to implement the solution
while ((c = getchar()) != '\n' && c != EOF) { }
I post a little adjustment 'Code B' for anyone who maybe have the same problem.
The problem was that the program kept me catching the '\n' character, independently from the enter character, here is the code that gave me the problem.
Code A
int y;
printf("\nGive any alphabetic character in lowercase: ");
while( (y = getchar()) != '\n' && y != EOF){
continue;
}
printf("\n%c\n", toupper(y));
and the adjustment was to 'catch' the (n-1) character just before the conditional in the while loop be evaluated, here is the code:
Code B
int y, x;
printf("\nGive any alphabetic character in lowercase: ");
while( (y = getchar()) != '\n' && y != EOF){
x = y;
}
printf("\n%c\n", toupper(x));
The possible explanation is that for the while loop to break, it has to assign the value '\n' to the variable y, so it will be the last assigned value.
If I missed something with the explanation, code A or code B please tell me, I’m barely new in c.
hope it helps someone
set ORACLE_SID=<YOUR_SID>
sqlplus "/as sysdba"
alter system disable restricted session;
or maybe
shutdown abort;
or maybe
lsnrctl stop
lsnrctl start
Strangely, none of these solutions work as RestTemplate does not seem to return the response on some client and server 500x errors. In which case, you will have log those as well by implementing ResponseErrorHandler as follows. Here is a draft code, but you get the point:
You can set the same interceptor as the error handler:
restTemplate.getInterceptors().add(interceptor);
restTemplate.setRequestFactory(new BufferingClientHttpRequestFactory(new SimpleClientHttpRequestFactory()));
restTemplate.setErrorHandler(interceptor);
And the intercept implements both interfaces:
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashSet;
import java.util.Set;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.HttpRequest;
import org.springframework.http.HttpStatus.Series;
import org.springframework.http.client.ClientHttpRequestExecution;
import org.springframework.http.client.ClientHttpRequestInterceptor;
import org.springframework.http.client.ClientHttpResponse;
import org.springframework.web.client.DefaultResponseErrorHandler;
import org.springframework.web.client.ResponseErrorHandler;
public class LoggingRequestInterceptor implements ClientHttpRequestInterceptor, ResponseErrorHandler {
static final Logger log = LoggerFactory.getLogger(LoggingRequestInterceptor.class);
static final DefaultResponseErrorHandler defaultResponseErrorHandler = new DefaultResponseErrorHandler();
final Set<Series> loggableStatuses = new HashSet();
public LoggingRequestInterceptor() {
}
public LoggingRequestInterceptor(Set<Series> loggableStatuses) {
loggableStatuses.addAll(loggableStatuses);
}
public ClientHttpResponse intercept(HttpRequest request, byte[] body, ClientHttpRequestExecution execution) throws IOException {
this.traceRequest(request, body);
ClientHttpResponse response = execution.execute(request, body);
if(response != null) {
this.traceResponse(response);
}
return response;
}
private void traceRequest(HttpRequest request, byte[] body) throws IOException {
log.debug("===========================request begin================================================");
log.debug("URI : {}", request.getURI());
log.debug("Method : {}", request.getMethod());
log.debug("Headers : {}", request.getHeaders());
log.debug("Request body: {}", new String(body, "UTF-8"));
log.debug("==========================request end================================================");
}
private void traceResponse(ClientHttpResponse response) throws IOException {
if(this.loggableStatuses.isEmpty() || this.loggableStatuses.contains(response.getStatusCode().series())) {
StringBuilder inputStringBuilder = new StringBuilder();
try {
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(response.getBody(), "UTF-8"));
for(String line = bufferedReader.readLine(); line != null; line = bufferedReader.readLine()) {
inputStringBuilder.append(line);
inputStringBuilder.append('\n');
}
} catch (Throwable var5) {
log.error("cannot read response due to error", var5);
}
log.debug("============================response begin==========================================");
log.debug("Status code : {}", response.getStatusCode());
log.debug("Status text : {}", response.getStatusText());
log.debug("Headers : {}", response.getHeaders());
log.debug("Response body: {}", inputStringBuilder.toString());
log.debug("=======================response end=================================================");
}
}
public boolean hasError(ClientHttpResponse response) throws IOException {
return defaultResponseErrorHandler.hasError(response);
}
public void handleError(ClientHttpResponse response) throws IOException {
this.traceResponse(response);
defaultResponseErrorHandler.handleError(response);
}
}
If you are trying to login postgres shell as postgres user, then you can use following commands.
switch to postgres user
# su - postgres
login to psql
# psql
Hope that helps
Whenever you are creating activity, you must add setcontentview
(your layout) after super call. Because setcontentview
bind xml into your activity so that's the reason you are getting nullpointerexception
.
setContentView(R.layout.webview);
webView = (WebView) findViewById(R.id.webView1);
wv.loadUrl("file:///android_asset/xyz.html");
See http://adamalbrecht.com/2013/12/12/creating-a-simple-modal-dialog-directive-in-angular-js/ for a simple way of doing modal dialog with Angular and without needing bootstrap
Edit: I've since been using ng-dialog from http://likeastore.github.io/ngDialog which is flexible and doesn't have any dependencies.
This will print 1 character per line from the file.
try {
FileInputStream inputStream = new FileInputStream(theFile);
while (inputStream.available() > 0) {
inputData = inputStream.read();
System.out.println((char) inputData);
}
inputStream.close();
} catch (IOException ioe) {
System.out.println("Trouble reading from the file: " + ioe.getMessage());
}
I made a calendar using:
http://social.technet.microsoft.com/wiki/contents/articles/22776.t-sql-calendar-table.aspx
then a Store procedure passing two dates and thats all:
USE DB_NAME;
GO
CREATE PROCEDURE [dbo].[USP_LISTAR_RANGO_FECHAS]
@FEC_INICIO date,
@FEC_FIN date
AS
Select Date from CALENDARIO where Date BETWEEN @FEC_INICIO AND @FEC_FIN;
In Symfony you can use this for protocol and host:
{{ app.request.schemeAndHttpHost }}
Though @alessandro1997 gave a perfect answer about concatenation.
'sprintf' will work fine, if your first argument is a pointer to a character (a pointer to a character is an array in 'c'), you'll have to make sure you have enough space for all the digits and a terminating '\0'. For example, If an integer uses 32 bits, it has up to 10 decimal digits. So your code should look like:
int i;
char s[11];
...
sprintf(s,"%ld", i);
Since most of the answers use ifconfig
to extract the IPv4 from the eth0 interface, which is deprecated in favor of ip addr
, the following code could be used instead:
import os
ipv4 = os.popen('ip addr show eth0 | grep "\<inet\>" | awk \'{ print $2 }\' | awk -F "/" \'{ print $1 }\'').read().strip()
ipv6 = os.popen('ip addr show eth0 | grep "\<inet6\>" | awk \'{ print $2 }\' | awk -F "/" \'{ print $1 }\'').read().strip()
Alternatively, you can shift part of the parsing task to the python interpreter by using split()
instead of grep and awk, as @serg points out in the comment:
import os
ipv4 = os.popen('ip addr show eth0').read().split("inet ")[1].split("/")[0]
ipv6 = os.popen('ip addr show eth0').read().split("inet6 ")[1].split("/")[0]
But in this case you have to check the bounds of the array returned by each split()
call.
Another version using regex:
import os
import re
ipv4 = re.search(re.compile(r'(?<=inet )(.*)(?=\/)', re.M), os.popen('ip addr show eth0').read()).groups()[0]
ipv6 = re.search(re.compile(r'(?<=inet6 )(.*)(?=\/)', re.M), os.popen('ip addr show eth0').read()).groups()[0]
You can do summary(santa$Believe)
and you will get the count for TRUE
and FALSE
I have solved this issue with following code.
$catArray=array();
$catIds=explode(',',$member['cat_id']);
if(!empty($catIds[0])){
foreach($catIds as $cat_id){
$catDetail=$this->Front_Category->get_category_detail($cat_id);
$catArray[]=$catDetail['allData']['cat_title'];
}
echo implode(',',$catArray);
}
<form action="myController/myAction" method="POST">
<input type="text" name="valueINeed" />
<input type="submit" value="View Report" />
</form>
controller:
[HttpPost]
public ActionResult myAction(string valueINeed)
{
//....
}
<context:property-placeholder location="classpath*:spring/*.properties" />
If you place it somewhere in the classpath in a directory named spring (change names/dirs accordingly), you can access with above
<property name="locations" value ="config/springcontext.properties" />
this will be pointing to web-inf/classes/config/springcontext.properties
Change
die (mysqli_error());
to
die('Error: ' . mysqli_error($myConnection));
in the query
$query = mysqli_query($myConnection, $sqlCommand) or die (mysqli_error());
Another option is setting the log levels for specific tags:
adb logcat SensorService:S PowerManagerService:S NfcService:S power:I Sensors:E
If you just want to set the log levels for some tags you can do it on a tag by tag basis.
As ultimately suggested by this other answer and it's comments on this page:
error: function(xhr, status, error) {
var err = JSON.parse(xhr.responseText);
alert(err.Message);
}
You can also use the xattr
command as in Stack Overflow question How do I remove the "extended attributes" on a file in Mac OS X?.
Just remove the com.apple.quarantine
attribute. It works even if you don't have an administrator account, which can be a plus. After that, the app isn't considered "downloaded" and is therefore not blocked.
In the same style as Giampaolo Rodolà' answer but as one liner, case insensitive and without having to match the whole process name, in windows you would have to include the .exe
suffix.
[x.kill() for x in psutil.process_iter() if 'ichat' in x.name().lower()]
You need to add -L/opt/lib
to tell ld
to look there for shared objects.
How about this approach :
if (!fs.existsSync(pathToFile)) {
var dirName = "";
var filePathSplit = pathToFile.split('/');
for (var index = 0; index < filePathSplit.length; index++) {
dirName += filePathSplit[index]+'/';
if (!fs.existsSync(dirName))
fs.mkdirSync(dirName);
}
}
This works for relative path.
You don't need to use **arr, you can either use:
void do_something(int el, std::vector<int> *arr){
arr->push_back(el);
}
or:
void do_something(int el, std::vector<int> &arr){
arr.push_back(el);
}
**arr makes no sense but if you insist using it, do it this way:
void do_something(int el, std::vector<int> **arr){
(*arr)->push_back(el);
}
but again there is no reason to do so...
Try this:
if ($("#mydiv").length > 0){
// do something here
}
The length property will return zero if element does not exists.
If you are using vue2-google-maps like me, the code to set the size looks like this:
<gmap-marker
..
:icon="{
..
anchor: { x: iconSize, y: iconSize },
scaledSize: { height: iconSize, width: iconSize },
}"
>
I had issues in that I would add classes to my objective-c bridging header, and in those objective-c headers that were imported, they were trying to import the swift header. It didn't like that.
So in all my objective-c classes that use swift, but are also bridged, the key was to make sure that you use forward class declarations in the headers, then import the "*-Swift.h" file in the .m file.
You're trying to access an element based on the name
attribute which works for postbacks to the server, but JavaScript responds to the id
attribute. Add an id
with the same value as name
and all should work fine.
<form name="myform" id="myform" action="action.php">
<input type="hidden" name="myinput" id="myinput" value="0" />
<input type="text" name="message" id="message" value="" />
<input type="submit" name="submit" id="submit" onclick="DoSubmit()" />
</form>
function DoSubmit(){
document.getElementById("myinput").value = '1';
return true;
}
Build cache is generated on application run time when a temporary file automatically generated in dart-tools folder, android folder and iOS folder. Clear command will delete the build tools and dart directories in flutter project so when we re-compile the project it will start from beginning. This command is mostly used when our project is showing debug error or running related error. In this answer we would Clear Build Cache in Flutter Android iOS App and Rebuild Project structure again.
Open your flutter project folder in Command Prompt or Terminal. and type flutter clean
command and press enter.
After executing flutter clean command we would see that it will delete the dart-tools
folder, android
folder and iOS
folder in our application with debug file. This might take some time depending upon your system speed to clean the project.
For more info, see https://flutter-examples.com/clear-build-cache-in-flutter-app/
Try this server control which inherits directly from CheckBoxList (free, open source): http://dropdowncheckboxes.codeplex.com/
In my opinion there are some idle queries running in the backgroud.
SELECT pid, age(clock_timestamp(), query_start), usename, query FROM pg_stat_activity WHERE query != '<IDLE>' AND query NOT ILIKE '%pg_stat_activity%' ORDER BY query_start desc;
SELECT pg_terminate_backend(procpid);
Note: Killing a select query doesnt make any bad impact
I am using below code and it perfect works for me, hope it will help you.
<configuration>
<system.webServer>
<rewrite>
<rules>
<rule name="Force redirect to https" stopProcessing="true">
<match url="(.*)" />
<conditions>
<add input="{HTTPS}" pattern="^OFF$" />
</conditions>
<action type="Redirect" url="https://{HTTP_HOST}{REQUEST_URI}" appendQueryString="false" />
</rule>
</rules>
</rewrite>
</system.webServer>
Whether you're using SORT -UNIQUE
, SELECT -UNIQUE
or GET-UNIQUE
from Powershell 2.0 to 5.1, all the examples given are on single Column arrays. I have yet to get this to function across Arrays with multiple Columns to REMOVE Duplicate Rows to leave single occurrences of a Row across said Columns, or develop an alternative script solution. Instead these cmdlets have only returned Rows in an Array that occurred ONCE with singular occurrence and dumped everything that had a duplicate. Typically I have to Remove Duplicates manually from the final CSV output in Excel to finish the report, but sometimes I would like to continue working with said data within Powershell after removing the duplicates.
Yes you can use SQL Server 2008 itself but you need to install SQL Server Management Studio Express (if not installed ) . Just right Click on Database Diagrams and create new diagram. Select the exisiting tables and if you have specified the references in your tables properly. You will be able to see the complete diagram of selected tables. For further reference see Getting started with SQL Server database diagrams
EDIT: Casting to a float/int no longer works in recent versions of SQL Server. Use the following instead:
select datediff(day, '1899-12-30T00:00:00', my_date_field)
from mytable
Note the string date should be in an unambiguous date format so that it isn't affected by your server's regional settings.
In older versions of SQL Server, you can convert from a DateTime to an Integer by casting to a float, then to an int:
select cast(cast(my_date_field as float) as int)
from mytable
(NB: You can't cast straight to an int, as MSSQL rounds the value up if you're past mid day!)
If there's an offset in your data, you can obviously add or subtract this from the result
You can convert in the other direction, by casting straight back:
select cast(my_integer_date as datetime)
from mytable
You can use strstr
. Example code here.
Note that the returned result is not null terminated.
There are two ways to add the NOT NULL Columns to the table :
ALTER the table by adding the column with NULL constraint. Fill the column with some data. Ex: column can be updated with ''
ALTER the table by adding the column with NOT NULL constraint by giving DEFAULT values. ALTER table TableName ADD NewColumn DataType NOT NULL DEFAULT ''
changing these functions will allow you to log the listeners added:
EventTarget.prototype.addEventListener
EventTarget.prototype.attachEvent
EventTarget.prototype.removeEventListener
EventTarget.prototype.detachEvent
read the rest of the listeners with
console.log(someElement.onclick);
console.log(someElement.getAttribute("onclick"));
This is what i normally work by when designing the interface of a non-template function:
Pass by value if the function does not want to modify the parameter and the value is cheap to copy (int, double, float, char, bool, etc... Notice that std::string, std::vector, and the rest of the containers in the standard library are NOT)
Pass by const pointer if the value is expensive to copy and the function does not want to modify the value pointed to and NULL is a value that the function handles.
Pass by non-const pointer if the value is expensive to copy and the function wants to modify the value pointed to and NULL is a value that the function handles.
Pass by const reference when the value is expensive to copy and the function does not want to modify the value referred to and NULL would not be a valid value if a pointer was used instead.
Pass by non-const reference when the value is expensive to copy and the function wants to modify the value referred to and NULL would not be a valid value if a pointer was used instead.
In Tables, For minimum table cells height or rows height use css height:
in place of min-height:
AND
For Limiting max-height of all cells or rows in table with Javascript:
This script is good for horizontal overflow tables.
This script increase the table width 300px each time (maximum 4000px) until rows shrinks to max-height(160px) , and you can also edit numbers as your need.
var i = 0, row, table = document.getElementsByTagName('table')[0], j = table.offsetWidth;
while (row = table.rows[i++]) {
while (row.offsetHeight > 160 && j < 4000) {
j += 300;
table.style.width = j + 'px';
}
}
Source: HTML Table Solution Max Height Limit For Rows Or Cells By Increasing Table Width, Javascript
<Hoverable hoverStyle={styles.linkHover}>
<a href="https://example.com" style={styles.link}>
Go
</a>
</Hoverable>
Where Hoverable is defined as:
function Hoverable(props) {
const [hover, setHover] = useState(false);
const child = Children.only(props.children);
const onHoverChange = useCallback(
e => {
const name = e.type === "mouseenter" ? "onMouseEnter" : "onMouseLeave";
setHover(!hover);
if (child.props[name]) {
child.props[name](e);
}
},
[setHover, hover, child]
);
return React.cloneElement(child, {
onMouseEnter: onHoverChange,
onMouseLeave: onHoverChange,
style: Object.assign({}, child.props.style, hover ? props.hoverStyle : {})
});
}
I found a working splitter, http://www.dreamchain.com/split-pane/, which works with jQuery v1.9. Note I had to add the following CSS code to get it working with a fixed bootstrap
navigation bar.
fixed-left {
position: absolute !important; /* to override relative */
height: auto !important;
top: 55px; /* Fixed navbar height */
bottom: 0px;
}
http://www.scribd.com/doc/2546837/New-Subquery-Optimizations-In-MySQL-6
I only use MicrosoftAdvertising.Mobile and Microsoft.Advertising.Mobile.UI and I am served ads. The SDK should only add the DLLs not reference itself.
Note: You need to explicitly set width and height Make sure the phone dialer, and web browser capabilities are enabled
Followup note: Make sure that after you've removed the SDK DLL, that the xmlns references are not still pointing to it. The best route to take here is
Here is the xmlns reference:
xmlns:AdNamepace="clr-namespace:Microsoft.Advertising.Mobile.UI;assembly=Microsoft.Advertising.Mobile.UI"
Then the ad itself:
<AdNamespace:AdControl x:Name="myAd" Height="80" Width="480" AdUnitId="yourAdUnitIdHere" ApplicationId="yourIdHere"/>
$(function() {
$("#MyTextBox").blur();
});
Dot notation will break the type checking, switch to bracket notation. You might also try using the get() method. It also keeps AOT compilation in tact I've read.
this.form.get('controlName').value // safer
this.form.controlName.value // triggers type checking and breaks AOT
The accepted answer is the correct way to do this in most cases. However, there are some situations where you want to set the cookie header manually. Normally if you set a "Cookie" header it is ignored, but that's because HttpClientHandler
defaults to using its CookieContainer
property for cookies. If you disable that then by setting UseCookies
to false
you can set cookie headers manually and they will appear in the request, e.g.
var baseAddress = new Uri("http://example.com");
using (var handler = new HttpClientHandler { UseCookies = false })
using (var client = new HttpClient(handler) { BaseAddress = baseAddress })
{
var message = new HttpRequestMessage(HttpMethod.Get, "/test");
message.Headers.Add("Cookie", "cookie1=value1; cookie2=value2");
var result = await client.SendAsync(message);
result.EnsureSuccessStatusCode();
}
Yes, this is an old question. But it's misleading, as this was the first result in my search, and both the answers aren't correct anymore.
You can change your Github account name at any time.
To do this, click your profile picture > Settings
> Account Settings
> Change Username
.
Links to your repositories will redirect to the new URLs, but they should be updated on other sites because someone who chooses your abandoned username can override the links. Links to your profile page will be 404'd.
For more information, see the official help page.
And furthermore, if you want to change your username to something else, but that specific username is being taken up by someone else who has been completely inactive for the entire time their account has existed, you can report their account for name squatting.
I prefer an id descendant selector of your #form2, like this:
$("#form2 #name").val("Hello World!");
I also faced similar issues when tried to do ng serve. I was able to resolve it as below.
Note:
C:\Windows\system32> is on windows command prompt
C:\apps\workspace\testProj> is on VS code Terminal (can also be doable in another command prompt)
Following are the steps which I used to resolve this.
Step1. Verify the cli version installed on command prompt (will be Angular CLI global version)
C:\Windows\system32>ng --version
Angular CLI: 8.3.13
If cli was installed earlier, it shows the global cli version.
If cli was not installed, we may get the error
ng is not recognized as an internal or external command
a. (Optional Step) Install Angular CLI global version
C:\Windows\system32>npm install -g @angular/cli
C:\Windows\system32>npm install -g @angular-cli/latest
b. Check version again
C:\Windows\system32>ng --version
Angular CLI: 8.3.13
Step2. Verify the local cli version installed on your angular project(VS code ide or command prompt cd'd to your project project)
C:\apps\workspace\testProj>ng --version
Angular CLI: 7.3.8
Note: Clearly versions are not in sync. Do the following in your angular project
C:\apps\workspace\testProj>ng update @angular/cli -> important to sync with global cli version
Note: If upgrade donot work using above command (ref: How to upgrade Angular CLI to the latest version)
On command prompt, uninstall global angular cli, clean the cache and reinstall the cli
C:\Windows\system32>npm uninstall -g angular-cli
C:\Windows\system32>npm cache clean or npm cache verify #(if npm > 5)
C:\Windows\system32>npm install -g @angular/cli@latest
Now update your local project version, because cli version of your local project is having higher priority than global one when you try to execute your project.
C:\apps\workspace\testProj>rm -rf node_modules
C:\apps\workspace\testProj>npm uninstall --save-dev angular-cli
C:\apps\workspace\testProj>npm install --save-dev @angular/cli@latest
C:\apps\workspace\testProj>npm install
C:\apps\workspace\testProj>ng update @angular/cli
Step3. Verify if local project cli version now in sync with global one
C:\Windows\system32>ng --version
Angular CLI: 8.3.13
C:\apps\workspace\testProj>ng --version
Angular CLI: 8.3.13
Step4.. Revalidate on the project
C:\apps\workspace\testProj>ng serve
Should work now
If you want to reduce the size to decimal(7,2) from decimal(9,2) you will have to account for the existing data with values greater to fit into decimal(7,2). Either you will have to delete those numbers are truncate it down to fit into your new size. If there was no data for the field you are trying to update it will do it automatically without issues
My solution is to use these 2 mappings:
map <leader>n <Esc><Esc>0qq
map <leader>m q:'<,'>-1normal!@q<CR><Down>
How to use them:
V12j
<leader>n
<leader>m
To make another edit you don't need to make the selection again. Just press <leader>n
, make your edit and press <leader>m
to apply.
How this works:
<Esc><Esc>0qq
Exit the visual selection, go to the beginning of the line and start recording a macro.
q
Stop recording the macro.
:'<,'>-1normal!@q<CR>
From the start of the visual selection to the line before the end, play the macro on each line.
<Down>
Go back down to the last line.
You can also just map the same key but for different modes:
vmap <leader>m <Esc><Esc>0qq
nmap <leader>m q:'<,'>-1normal!@q<CR><Down>
Although this messes up your ability to make another edit. You'll have to re-select your lines.
You should make x
and y
numpy arrays, not lists:
x = np.array([0.46,0.59,0.68,0.99,0.39,0.31,1.09,
0.77,0.72,0.49,0.55,0.62,0.58,0.88,0.78])
y = np.array([0.315,0.383,0.452,0.650,0.279,0.215,0.727,0.512,
0.478,0.335,0.365,0.424,0.390,0.585,0.511])
With this change, it produces the expect plot. If they are lists, m * x
will not produce the result you expect, but an empty list. Note that m
is anumpy.float64
scalar, not a standard Python float
.
I actually consider this a bit dubious behavior of Numpy. In normal Python, multiplying a list with an integer just repeats the list:
In [42]: 2 * [1, 2, 3]
Out[42]: [1, 2, 3, 1, 2, 3]
while multiplying a list with a float gives an error (as I think it should):
In [43]: 1.5 * [1, 2, 3]
---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
<ipython-input-43-d710bb467cdd> in <module>()
----> 1 1.5 * [1, 2, 3]
TypeError: can't multiply sequence by non-int of type 'float'
The weird thing is that multiplying a Python list with a Numpy scalar apparently works:
In [45]: np.float64(0.5) * [1, 2, 3]
Out[45]: []
In [46]: np.float64(1.5) * [1, 2, 3]
Out[46]: [1, 2, 3]
In [47]: np.float64(2.5) * [1, 2, 3]
Out[47]: [1, 2, 3, 1, 2, 3]
So it seems that the float gets truncated to an int, after which you get the standard Python behavior of repeating the list, which is quite unexpected behavior. The best thing would have been to raise an error (so that you would have spotted the problem yourself instead of having to ask your question on Stackoverflow) or to just show the expected element-wise multiplication (in which your code would have just worked). Interestingly, addition between a list and a Numpy scalar does work:
In [69]: np.float64(0.123) + [1, 2, 3]
Out[69]: array([ 1.123, 2.123, 3.123])
Most of the answers here are not valid for newer versions. With the version of 9.0 or upper, Menu.setApplicationMenu(null);
should work. By the way, Menu
exported from electron package: const {Menu} = require('electron');
Consider the following servlet conf:
<servlet>
<servlet-name>NewServlet</servlet-name>
<servlet-class>NewServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>NewServlet</servlet-name>
<url-pattern>/NewServlet/*</url-pattern>
</servlet-mapping>
Now, when I hit the URL http://localhost:8084/JSPTemp1/NewServlet/jhi
, it will invoke NewServlet
as it is mapped with the pattern described above.
Here:
getRequestURI() = /JSPTemp1/NewServlet/jhi
getPathInfo() = /jhi
We have those ones:
getPathInfo()
returns
a String, decoded by the web container, specifying extra path information that comes after the servlet path but before the query string in the request URL; or null if the URL does not have any extra path information
getRequestURI()
returns
a String containing the part of the URL from the protocol name up to the query string
You generally should not add an app.config
file to a class library project; it won't be used without some painful bending and twisting on your part. It doesn't hurt the library project at all - it just won't do anything at all.
Instead, you configure the application which is using your library; so the configuration information required would go there. Each application that might use your library likely will have different requirements, so this actually makes logical sense, too.
This is a safety measure to avoid pushing branches that are not ready to be published. Loosely speaking, by executing "git push", only local branches that already exist on the server with the same name will be pushed, or branches that have been pushed using the localbranch:remotebranch syntax.
To push all local branches to the remote repository, use --all
:
git push REMOTENAME --all
git push --all
or specify all branches you want to push:
git push REMOTENAME master exp-branch-a anotherbranch bugfix
In addition, it's useful to add -u
to the "git push" command, as this will tell you if your local branch is ahead or behind the remote branch. This is shown when you run "git status" after a git fetch.
For Rails4:
So, what you're wanting is an inner join, so you really should just use the joins predicate:
Foo.joins(:bar)
Select * from Foo Inner Join Bars ...
But, for the record, if you want a "NOT NULL" condition simply use the not predicate:
Foo.includes(:bar).where.not(bars: {id: nil})
Select * from Foo Left Outer Join Bars on .. WHERE bars.id IS NOT NULL
Note that this syntax reports a deprecation (it talks about a string SQL snippet, but I guess the hash condition is changed to string in the parser?), so be sure to add the references to the end:
Foo.includes(:bar).where.not(bars: {id: nil}).references(:bar)
DEPRECATION WARNING: It looks like you are eager loading table(s) (one of: ....) that are referenced in a string SQL snippet. For example:
Post.includes(:comments).where("comments.title = 'foo'")
Currently, Active Record recognizes the table in the string, and knows to JOIN the comments table to the query, rather than loading comments in a separate query. However, doing this without writing a full-blown SQL parser is inherently flawed. Since we don't want to write an SQL parser, we are removing this functionality. From now on, you must explicitly tell Active Record when you are referencing a table from a string:
Post.includes(:comments).where("comments.title = 'foo'").references(:comments)
You can loop through each input after submiting and check if it's empty
let form = document.getElementById('yourform');
form.addEventListener("submit", function(e){ // event into anonymous function
let ver = true;
e.preventDefault(); //Prevent submit event from refreshing the page
e.target.forEach(input => { // input is just a variable name, e.target is the form element
if(input.length < 1){ // here you're looping through each input of the form and checking its length
ver = false;
}
});
if(!ver){
return false;
}else{
//continue what you were doing :)
}
})
Is there a specific reason you want to use FileNameExtensionFilter
? I know this works..
private File[] getNewTextFiles() {
return dir.listFiles(new FilenameFilter() {
@Override
public boolean accept(File dir, String name) {
return name.toLowerCase().endsWith(".txt");
}
});
}
You can get ID only after saving, instead you can create a new Guid and assign before saving.
One Additional point:
When you are converting from tsql
to plsql
you have to worry about no_data_found
exception
DECLARE
v_var NUMBER;
BEGIN
SELECT clmn INTO v_var FROM tbl;
Exception when no_data_found then v_var := null; --what ever handle the exception.
END;
In tsql
if no data found
then the variable will be null
but no exception
I'd suggest doing this with a combination of
overflow-y: hidden;
scrolling="no"
(for HTML4)seamless="seamless"
(for HTML5)* The seamless
attribute has been removed from the standard, and no browsers support it.
.foo {_x000D_
width: 200px;_x000D_
height: 200px;_x000D_
overflow-y: hidden;_x000D_
}
_x000D_
<iframe src="https://bing.com" _x000D_
class="foo" _x000D_
scrolling="no" >_x000D_
</iframe>
_x000D_
One (++i) is preincrement, one (i++) is postincrement. The difference is in what value is immediately returned from the expression.
// Psuedocode
int i = 0;
print i++; // Prints 0
print i; // Prints 1
int j = 0;
print ++j; // Prints 1
print j; // Prints 1
Edit: Woops, entirely ignored the loop side of things. There's no actual difference in for loops when it's the 'step' portion (for(...; ...; )), but it can come into play in other cases.
If you want to get all new things in the past 5 minutes you would have to do some calculations, but its not hard...
First create an index on the property you want to match on (include sort direction -1 for descending and 1 for ascending)
db.things.createIndex({ createdAt: -1 }) // descending order on .createdAt
Then query for documents created in the last 5 minutes (60 seconds * 5 minutes)....because javascript's .getTime()
returns milliseconds you need to mulitply by 1000 before you use it as input to the new Date()
constructor.
db.things.find({
createdAt: {
$gte: new Date(new Date().getTime()-60*5*1000).toISOString()
}
})
.count()
Explanation for new Date(new Date().getTime()-60*5*1000).toISOString()
is as follows:
First we calculate "5 minutes ago":
new Date().getTime()
gives us current time in milliseconds5*60*1000
-- I just multiply by 60
seconds so its easy to change. I can just change 5
to 120
if I want 2 hours (120 minutes).new Date().getTime()-60*5*1000
gives us 1484383878676
(5 minutes ago in ms)Now we need to feed that into a new Date()
constructor to get the ISO string format required by MongoDB timestamps.
{ $gte: new Date(resultFromAbove).toISOString() }
(mongodb .find() query)new Date(new Date().getTime()-60*5*1000)
.toISOString()
new Date(new Date().getTime()-60*5*1000).toISOString()
gives us 2017-01-14T08:53:17.586Z
Of course this is a little easier with variables if you're using the node-mongodb-native driver, but this works in the mongo shell which is what I usually use to check things.
The final column of my database (it's column F in the spreadsheet) is not used and therefore empty. When I imported the excel CSV file I got the "column count" error.
This is because excel was only saving the columns I use. A-E
Adding a 0 to the first row in F solved the problem, then I deleted it after upload was successful.
Hope this helps and saves someone else time and loss of hair :)
In springboot 2.4.1 im just added annotation @SpringBootTest
in my test, and obviously, setted spring.profiles.active = test
in my src/test/resources/application.yml
Im using @ExtendWith({SpringExtension.class})
and @ContextConfiguration(classes = {RabbitMQ.class, GenericMapToObject.class, ModelMapper.class, StringUtils.class})
for external confs
If you want a copy-paste bash script:
var=$(mysql -e 'SELECT CONCAT("ALTER TABLE ", TABLE_NAME," CONVERT TO CHARACTER SET utf8 COLLATE utf8_czech_ci;") AS execTabs FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA="zabbix" AND TABLE_TYPE="BASE TABLE"' -uroot -p )
var+='ALTER DATABASE zabbix CHARACTER SET utf8 COLLATE utf8_general_ci;'
echo $var | cut -d " " -f2- | mysql -uroot -p zabbix
Change zabbix to your database name.
For a unique column, use this:
INSERT OR REPLACE INTO table () values();
For more information, see: sqlite.org/lang_insert
Your comparator is not transitive.
Let A
be the parent of B
, and B
be the parent of C
. Since A > B
and B > C
, then it must be the case that A > C
. However, if your comparator is invoked on A
and C
, it would return zero, meaning A == C
. This violates the contract and hence throws the exception.
It's rather nice of the library to detect this and let you know, rather than behave erratically.
One way to satisfy the transitivity requirement in compareParents()
is to traverse the getParent()
chain instead of only looking at the immediate ancestor.
That's because you have selected your Master table on the table drop down Table Selected
Select the table you want to use and proceed executing your query
don't know why, but it works. Two configuration are the same, just change xxx to your name.
@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(
entityManagerFactoryRef = "xxxEntityManager",
transactionManagerRef = "xxxTransactionManager",
basePackages = {"aaa.xxx"})
public class RepositoryConfig {
@Autowired
private Environment env;
@Bean
@Primary
@ConfigurationProperties(prefix="datasource.xxx")
public DataSource xxxDataSource() {
return DataSourceBuilder.create().build();
}
@Bean
public LocalContainerEntityManagerFactoryBean xxxEntityManager() {
LocalContainerEntityManagerFactoryBean em = new LocalContainerEntityManagerFactoryBean();
em.setDataSource(xxxDataSource());
em.setPackagesToScan(new String[] {"aaa.xxx"});
HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
em.setJpaVendorAdapter(vendorAdapter);
HashMap<String, Object> properties = new HashMap<String, Object>();
properties.put("hibernate.show_sql", env.getProperty("hibernate.show_sql"));
properties.put("hibernate.hbm2ddl.auto", env.getProperty("hibernate.hbm2ddl.auto"));
properties.put("hibernate.dialect", env.getProperty("hibernate.dialect"));
em.setJpaPropertyMap(properties);
return em;
}
@Bean(name = "xxxTransactionManager")
public PlatformTransactionManager xxxTransactionManager() {
JpaTransactionManager tm = new JpaTransactionManager();
tm.setEntityManagerFactory(xxxEntityManager().getObject());
return tm;
}
}
You can use range quantifier {min,max}
to specify minimum of 1 digit and maximum of 6 digits as:
^[0-9]{1,6}$
Explanation:
^ : Start anchor
[0-9] : Character class to match one of the 10 digits
{1,6} : Range quantifier. Minimum 1 repetition and maximum 6.
$ : End anchor
Why did your regex not work ?
You were almost close on the regex:
^[0-9][0-9]\?[0-9]\?[0-9]\?[0-9]\?[0-9]\?$
Since you had escaped the ?
by preceding it with the \
, the ?
was no more acting as a regex meta-character ( for 0
or 1
repetitions) but was being treated literally.
To fix it just remove the \
and you are there.
The quantifier based regex is shorter, more readable and can easily be extended to any number of digits.
Your second regex:
^[0-999999]$
is equivalent to:
^[0-9]$
which matches strings with exactly one digit. They are equivalent because a character class [aaaab]
is same as [ab]
.
see: https://developer.mozilla.org/en-US/docs/Web/CSS/cursor
so you need to add: cursor:pointer;
In your case use:
#more {
background:none;
border:none;
color:#FFF;
font-family:Verdana, Geneva, sans-serif;
cursor:pointer;
}
This will apply the curser to the element with the ID "more" (can be only used once). So in your HTML use
<input type="button" id="more" />
If you want to apply this to more than one button then you have more than one possibility:
using CLASS
.more {
background:none;
border:none;
color:#FFF;
font-family:Verdana, Geneva, sans-serif;
cursor:pointer;
}
and in your HTML use
<input type="button" class="more" value="first" />
<input type="button" class="more" value="second" />
or apply to a html context:
input[type=button] {
background:none;
border:none;
color:#FFF;
font-family:Verdana, Geneva, sans-serif;
cursor:pointer;
}
and in your HTML use
<input type="button" value="first" />
<input type="button" value="second" />
This past week I installed Microsoft SQL Server 2014 Developer Edition on my dev box, and immediately ran into a problem I had never seen before.
I’ve installed various versions of SQL Server countless times, and it is usually a painless procedure. Install the server, run the Management Console, it’s that simple. However, after completing this installation, when I tried to log in to the server using SSMS, I got an error like the one below:
SQL Server login error 18456 “Login failed for user… (Microsoft SQL Server, Error: 18456)” I’m used to seeing this error if I typed the wrong password when logging in – but that’s only if I’m using mixed mode (Windows and SQL Authentication). In this case, the server was set up with Windows Authentication only, and the user account was my own. I’m still not sure why it didn’t add my user to the SYSADMIN role during setup; perhaps I missed a step and forgot to add it. At any rate, not all hope was lost.
The way to fix this, if you cannot log on with any other account to SQL Server, is to add your network login through a command line interface. For this to work, you need to be an Administrator on Windows for the PC that you’re logged onto.
Stop the MSSQL service. Open a Command Prompt using Run As Administrator. Change to the folder that holds the SQL Server EXE file; the default for SQL Server 2014 is “C:\Program Files\Microsoft SQL Server\MSSQL12.MSSQLSERVER\MSSQL\Binn”. Run the following command: “sqlservr.exe –m”. This will start SQL Server in single-user mode. While leaving this Command Prompt open, open another one, repeating steps 2 and 3. In the second Command Prompt window, run “SQLCMD –S Server_Name\Instance_Name” In this window, run the following lines, pressing Enter after each one: 1
CREATE LOGIN [domainName\loginName] FROM WINDOWS 2 GO 3 SP_ADDSRVROLEMEMBER 'LOGIN_NAME','SYSADMIN' 4 GO Use CTRL+C to end both processes in the Command Prompt windows; you will be prompted to press Y to end the SQL Server process.
Restart the MSSQL service. That’s it! You should now be able to log in using your network login.
If you have div next each other like this
<div id="1" style="float:left; margin-right:5px">
</div>
<div id="2" style="float:left">
</div>
This should work!
You can use following script :
Declare @Cons_Name NVARCHAR(100)
Declare @Str NVARCHAR(500)
SELECT @Cons_Name=name
FROM sys.objects
WHERE type='UQ' AND OBJECT_NAME(parent_object_id) = N'TableName';
---- Delete the unique constraint.
SET @Str='ALTER TABLE TableName DROP CONSTRAINT ' + @Cons_Name;
Exec (@Str)
GO
What's wrong with using Git For Windows? From the repo view, there's an icon of the branch you're in (at the top), and if you click on manage you can drag&drop in a very visual and convenient way.
If you are using angular-cli
, simply use command:
ng v
Definition :- Big O notation is a notation which says how a algorithm performance will perform if the data input increases.
When we talk about algorithms there are 3 important pillars Input , Output and Processing of algorithm. Big O is symbolic notation which says if the data input is increased in what rate will the performance vary of the algorithm processing.
I would encourage you to see this youtube video which explains Big O Notation in depth with code examples.
So for example assume that a algorithm takes 5 records and the time required for processing the same is 27 seconds. Now if we increase the records to 10 the algorithm takes 105 seconds.
In simple words the time taken is square of the number of records. We can denote this by O(n ^ 2). This symbolic representation is termed as Big O notation.
Now please note the units can be anything in inputs it can be bytes , bits number of records , the performance can be measured in any unit like second , minutes , days and so on. So its not the exact unit but rather the relationship.
For example look at the below function "Function1" which takes a collection and does processing on the first record. Now for this function the performance will be same irrespective you put 1000 , 10000 or 100000 records. So we can denote it by O(1).
void Function1(List<string> data)
{
string str = data[0];
}
Now see the below function "Function2()". In this case the processing time will increase with number of records. We can denote this algorithm performance using O(n).
void Function2(List<string> data)
{
foreach(string str in data)
{
if (str == "shiv")
{
return;
}
}
}
When we see a Big O notation for any algorithm we can classify them in to three categories of performance :-
So by looking at Big O notation we categorize good and bad zones for algorithms.
I would recommend you to watch this 10 minutes video which discusses Big O with sample code
I describe here a problem that I faced when run npm install
- the package does not appear in node_modules
.
The issue was that the name
value in package.json
of installed package was different than the name of imported package (key in package.json
of my project).
So if your installed project name is some-package
(name value in its package.json
) then
in package.json
of your project write: "some-package": "owner/some-repo#tag"
.
This solution worked for me:
var rawBodySaver = function (req, res, buf, encoding) {
if (buf && buf.length) {
req.rawBody = buf.toString(encoding || 'utf8');
}
}
app.use(bodyParser.json({ verify: rawBodySaver }));
app.use(bodyParser.urlencoded({ verify: rawBodySaver, extended: true }));
app.use(bodyParser.raw({ verify: rawBodySaver, type: '*/*' }));
When I use solution with req.on('data', function(chunk) { });
it not working on chunked request body.
I am not going to give you the whole answer (I don't think you're looking for the parsing and writing to file part anyway), but a pivotal hint should suffice: use python's set()
function, and then sorted()
or .sort()
coupled with .reverse()
:
>>> a=sorted(set([10,60,30,10,50,20,60,50,60,10,30]))
>>> a
[10, 20, 30, 50, 60]
>>> a.reverse()
>>> a
[60, 50, 30, 20, 10]
A bit old, but for future use:
Open Android Studio -> app/src/main/res -> Right Click -> Image Asset
npx @angular/cli@10 new my-poject
you can replace 10 with your version of choice... no need to uninstall your existing CLI! Just learnt that now...
I use the following code:
package main
import (
"fmt"
"time"
)
func main() {
now := time.Now()
fmt.Println("\nToday:", now)
after := now.Add(1 * time.Minute)
fmt.Println("\nAdd 1 Minute:", after)
for {
fmt.Println("test")
time.Sleep(10 * time.Second)
now = time.Now()
if now.After(after) {
break
}
}
fmt.Println("done")
}
It is more simple and works fine to me.
You need to shift and mask the value, so for example...
If you want to read the first two bits, you just need to mask them off like so:
int value = input & 0x3;
If you want to offset it you need to shift right N bits and then mask off the bits you want:
int value = (intput >> 1) & 0x3;
To read three bits like you asked in your question.
int value = (input >> 1) & 0x7;
Python has a min()
built-in function:
>>> darr = [1, 3.14159, 1e100, -2.71828]
>>> min(darr)
-2.71828
UPDATE 2
@Override
protected void onResume() {
super.onResume();
mUserNameEdit.requestFocus();
mUserNameEdit.postDelayed(new Runnable() {
@Override
public void run() {
// TODO Auto-generated method stub
InputMethodManager keyboard = (InputMethodManager)
getSystemService(Context.INPUT_METHOD_SERVICE);
keyboard.showSoftInput(mUserNameEdit, 0);
}
},200); //use 300 to make it run when coming back from lock screen
}
I tried very hard and found out a solution ... whenever a new activity starts then keyboard cant open but we can use Runnable in onResume and it is working fine so please try this code and check...
UPDATE 1
add this line in your AppLogin.java
mUserNameEdit.requestFocus();
and this line in your AppList.java
listview.requestFocus()'
after this check your application if it is not working then add this line in your AndroidManifest.xml
file
<activity android:name=".AppLogin" android:configChanges="keyboardHidden|orientation"></activity>
<activity android:name=".AppList" android:configChanges="keyboard|orientation"></activity>
ORIGINAL ANSWER
InputMethodManager imm = (InputMethodManager)this.getSystemService(Service.INPUT_METHOD_SERVICE);
for hide keyboard
imm.hideSoftInputFromWindow(ed.getWindowToken(), 0);
for show keyboard
imm.showSoftInput(ed, 0);
for focus on EditText
ed.requestFocus();
where ed is EditText
I believe you need to .f
file as a parameter, not as a command-single-string. same with the "--domain "+i
, which i would split in two elements of the list.
Assuming that:
FORTRAN
executable, ~/
is indeed the correct way for the FORTRAN
executableI would change this line:
subprocess.Popen(["FORTRAN ~/C:/Users/Vishnu/Desktop/Fortran_Program_Rum/phase1.f", "--domain "+i])
to
subprocess.Popen(["FORTRAN", "~/C:/Users/Vishnu/Desktop/Fortran_Program_Rum/phase1.f", "--domain", i])
If that doesn't work, you should do a os.path.exists()
for the .f
file, and check that you can launch the FORTRAN
executable without any path, and set the path or system path variable accordingly
[EDIT 6-Mar-2017]
As the exception, detailed in the original post, is a python exception from subprocess
; it is likely that the WinError 2
is because it cannot find FORTRAN
I highly suggest that you specify full path for your executable:
for i in input:
exe = r'c:\somedir\fortrandir\fortran.exe'
fortran_script = r'~/C:/Users/Vishnu/Desktop/Fortran_Program_Rum/phase1.f'
subprocess.Popen([exe, fortran_script, "--domain", i])
if you need to convert the forward-slashes to backward-slashes, as suggested in one of the comments, you can do this:
for i in input:
exe = os.path.normcase(r'c:\somedir\fortrandir\fortran.exe')
fortran_script = os.path.normcase(r'~/C:/Users/Vishnu/Desktop/Fortran_Program_Rum/phase1.f')
i = os.path.normcase(i)
subprocess.Popen([exe, fortran_script, "--domain", i])
[EDIT 7-Mar-2017]
The following line is incorrect:
exe = os.path.normcase(r'~/C:/Program Files (x86)/Silverfrost/ftn95.exe'
I am not sure why you have ~/
as a prefix for every path, don't do that.
for i in input:
exe = os.path.normcase(r'C:/Program Files (x86)/Silverfrost/ftn95.exe'
fortran_script = os.path.normcase(r'C:/Users/Vishnu/Desktop/Fortran_Program_Rum/phase1.f')
i = os.path.normcase(i)
subprocess.Popen([exe, fortran_script, "--domain", i])
[2nd EDIT 7-Mar-2017]
I do not know this FORTRAN or ftn95.exe, does it need a shell to function properly?, in which case you need to launch as follows:
subprocess.Popen([exe, fortran_script, "--domain", i], shell = True)
You really need to try to launch the command manually from the working directory which your python script is operating from. Once you have the command which is actually working, then build up the subprocess
command.
var str = "The dog has a long tail, and it is RED!";
str = str.replace(/ {2,}/g,' ');
EDIT: If you wish to replace all kind of whitespace characters the most efficient way would be like that:
str = str.replace(/\s{2,}/g,' ');
this fix worked for me:
installed Report Viewer 2008 SP1 Redistributable: http://www.microsoft.com/downloads/details.aspx?familyid=6aaa74bd-a46e-4478-b4e1-2063d18d2d42
took the solution from here: http://blogs.msdn.com/b/brianhartman/archive/2009/10/13/gdi-updated-again.aspx
For anyone wondering why this happens on Android, it's probably because you're using a wrong c++ standard library. Try changing the c++ library in your build.gradle from gnustl_static
to c++_static
and the c++ standard in your CMakeLists.txt from -std=gnu++11
to -std=c++11
I know it's a bit old but I ran in the same problem today. I wanted to install eclipse on my vm with xubuntu. Because I've had problems with the latest eclipse version 2019-06 I tried with Oxygen. So I went to eclipse.org and downloaded oxygen. When running oxygen, the problem with merketplace not reachable occurs. So I downloaded the eclipse installer not immediatly the oxygen. After that I can use eclipse as expectet ( all versions)
Update: Swift 3
class ButtonIconRight: UIButton {
override func imageRect(forContentRect contentRect:CGRect) -> CGRect {
var imageFrame = super.imageRect(forContentRect: contentRect)
imageFrame.origin.x = super.titleRect(forContentRect: contentRect).maxX - imageFrame.width
return imageFrame
}
override func titleRect(forContentRect contentRect:CGRect) -> CGRect {
var titleFrame = super.titleRect(forContentRect: contentRect)
if (self.currentImage != nil) {
titleFrame.origin.x = super.imageRect(forContentRect: contentRect).minX
}
return titleFrame
}
}
Original answer for Swift 2:
A solution that handles all horizontal alignments, with a Swift implementation example. Just translate to Objective-C if needed.
class ButtonIconRight: UIButton {
override func imageRectForContentRect(contentRect:CGRect) -> CGRect {
var imageFrame = super.imageRectForContentRect(contentRect)
imageFrame.origin.x = CGRectGetMaxX(super.titleRectForContentRect(contentRect)) - CGRectGetWidth(imageFrame)
return imageFrame
}
override func titleRectForContentRect(contentRect:CGRect) -> CGRect {
var titleFrame = super.titleRectForContentRect(contentRect)
if (self.currentImage != nil) {
titleFrame.origin.x = CGRectGetMinX(super.imageRectForContentRect(contentRect))
}
return titleFrame
}
}
Also worth noting that it handles quite well image & title insets.
Inspired from jasongregori answer ;)
The task definition for the user module should be different in the latest Ansible version.
tasks:
- user: name=test password={{ password }} state=present
Same problem/answer here, quoted below
I'm assuming you mean that you want to run your own private video calls, not simply link to Skype calls or similar. You really have 2 options here: host it yourself, or use a hosted solution and integrate it into your product.
Self-Hosted ----------------- This is messy. This can all be accomplished with PHP, but that is probably not the most advisable solution, as it is not the best tool for the job on all sides. Flash is much more efficient at a/v capture and transport on the user end. You can try to do this without flash, but you will have headaches. HTML5 may make your life easier, but if you're shooting for maximum compatibility, flash is the simplest way to go for creating the client. Then, as far as the actual server side that will relay the audio/video, you could write a chat server in php, but you're better off using an open source project, like janenz00's mention of red5, that's already built and interfacing with it through your client (if it doesn't already have one). Or you could homebrew a flash client as mentioned before and hook it up to a flash streaming server on both sides...either way it gets complicated fast, and is beyond my expertise to help you with at all.
Hosted Service ----------------- All in, my recommendation, unless you want to administer a ridiculous setup of many complex servers and failure points is to use a hosted service like UserPlane or similar and offload all the processing and technical work to people who are good at that, and then worry about interfacing with their api and getting their client well integrated into your site. You will be a happier developer if you do.
If you pass a variable data
(dictionary type) as context to a template, then you code should be:
{% for key, value in data.items %}
<p>{{ key }} : {{ value }}</p>
{% endfor %}
If you want to make this part of your POM for a repeatable build, you can use the fork-variant of a few of the plugins (especially compiler:compile and surefire:test):
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.2</version>
<configuration>
<fork>true</fork>
<meminitial>128m</meminitial>
<maxmem>1024m</maxmem>
<compilerArgs>
<arg>-XX:MaxPermSize=256m</arg>
</compilerArgs>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.18</version>
<configuration>
<forkCount>1</forkCount>
<argLine>-Xmx1024m -XX:MaxPermSize=256m</argLine>
</configuration>
</plugin>
If you're using MySQL, then you can use insert ... on duplicate.
lock_guard
and unique_lock
are pretty much the same thing; lock_guard
is a restricted version with a limited interface.
A lock_guard
always holds a lock from its construction to its destruction. A unique_lock
can be created without immediately locking, can unlock at any point in its existence, and can transfer ownership of the lock from one instance to another.
So you always use lock_guard
, unless you need the capabilities of unique_lock
. A condition_variable
needs a unique_lock
.
Dealing with GET parameters I iterated on Andrea Motto' solution.
The problem was that Volley called GetUrl
several times and his solution, using an Iterator, destroyed original Map object. The subsequent Volley internal calls had an empty params object.
I added also the encode of parameters.
This is an inline usage (no subclass).
public void GET(String url, Map<String, String> params, Response.Listener<String> response_listener, Response.ErrorListener error_listener, String API_KEY, String stringRequestTag) {
final Map<String, String> mParams = params;
final String mAPI_KEY = API_KEY;
final String mUrl = url;
StringRequest stringRequest = new StringRequest(
Request.Method.GET,
mUrl,
response_listener,
error_listener
) {
@Override
protected Map<String, String> getParams() {
return mParams;
}
@Override
public String getUrl() {
StringBuilder stringBuilder = new StringBuilder(mUrl);
int i = 1;
for (Map.Entry<String,String> entry: mParams.entrySet()) {
String key;
String value;
try {
key = URLEncoder.encode(entry.getKey(), "UTF-8");
value = URLEncoder.encode(entry.getValue(), "UTF-8");
if(i == 1) {
stringBuilder.append("?" + key + "=" + value);
} else {
stringBuilder.append("&" + key + "=" + value);
}
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
i++;
}
String url = stringBuilder.toString();
return url;
}
@Override
public Map<String, String> getHeaders() {
Map<String, String> headers = new HashMap<>();
if (!(mAPI_KEY.equals(""))) {
headers.put("X-API-KEY", mAPI_KEY);
}
return headers;
}
};
if (stringRequestTag != null) {
stringRequest.setTag(stringRequestTag);
}
mRequestQueue.add(stringRequest);
}
This function uses headers to pass an APIKEY and sets a TAG to the request useful to cancel it before its completion.
Hope this helps.
Aggregated List of Libraries
If you have access to Underscore, you can use the following:
if (_.contains([1, 3, 12], foo)) {
// ...
}
contains
used to work in Lodash as well (prior to V4), now you have to use includes
if (_.includes([1, 3, 12], foo)) {
handleYellowFruit();
}
thers is a simple way to create toggle button. I test it in vs2010. It's perfect.
ToolStripButton has a "Checked" property and a "CheckOnClik" property. You can use it to act as a toggle button
tbtnCross.CheckOnClick = true;
OR
tbtnCross.CheckOnClick = false;
tbtnCross.Click += new EventHandler(tbtnCross_Click);
.....
void tbtnCross_Click(object sender, EventArgs e)
{
ToolStripButton target = sender as ToolStripButton;
target.Checked = !target.Checked;
}
also, You can create toggle button list like this:
private void Form1_Load(object sender, EventArgs e)
{
arrToolView[0] = tbtnCross;
arrToolView[1] = tbtnLongtitude;
arrToolView[2] = tbtnTerrain;
arrToolView[3] = tbtnResult;
for (int i = 0; i<arrToolView.Length; i++)
{
arrToolView[i].CheckOnClick = false;
arrToolView[i].Click += new EventHandler(tbtnView_Click);
}
InitTree();
}
void tbtnView_Click(object sender, EventArgs e)
{
ToolStripButton target = sender as ToolStripButton;
if (target.Checked) return;
foreach (ToolStripButton btn in arrToolView)
{
btn.Checked = false;
//btn.CheckState = CheckState.Unchecked;
}
target.Checked = true;
target.CheckState = CheckState.Checked;
}