If code doesn't generate any error, but you don't hear sound - create the player as an instance:
static var player: AVAudioPlayer!
For me the first solution worked when I did this change :)
In iOS 10, and on newer iPhones, you can also use haptic API. This haptic feedback is softer than the AudioToolbox API.
For your GAME OVER scenario, a heavy UI impact feedback should be suitable.
UIImpactFeedbackGenerator(style: .heavy).impactOccurred()
You could use the other haptic feedback styles.
This only works in Xcode 7
Go to .h
file and import AVKit/AVKit.h
and
AVFoundation/AVFoundation.h
. Then go .m
file and add this code:
NSURL *url=[[NSBundle mainBundle]URLForResource:@"arreg" withExtension:@"mp4"];
AVPlayer *video=[AVPlayer playerWithURL:url];
AVPlayerViewController *controller=[[AVPlayerViewController alloc]init];
controller.player=video;
[self.view addSubview:controller.view];
controller.view.frame=self.view.frame;
[self addChildViewController:controller];
[video play];
In iOS10, there's a built in property for this now: timeControlStatus
For example, this function plays or pauses the avPlayer based on it's status and updates the play/pause button appropriately.
@IBAction func btnPlayPauseTap(_ sender: Any) {
if aPlayer.timeControlStatus == .playing {
aPlayer.pause()
btnPlay.setImage(UIImage(named: "control-play"), for: .normal)
} else if aPlayer.timeControlStatus == .paused {
aPlayer.play()
btnPlay.setImage(UIImage(named: "control-pause"), for: .normal)
}
}
As for your second question, to know if the avPlayer reached the end, the easiest thing to do would be to set up a notification.
NotificationCenter.default.addObserver(self, selector: #selector(self.didPlayToEnd), name: .AVPlayerItemDidPlayToEndTime, object: nil)
When it gets to the end, for example, you can have it rewind to the beginning of the video and reset the Pause button to Play.
@objc func didPlayToEnd() {
aPlayer.seek(to: CMTimeMakeWithSeconds(0, 1))
btnPlay.setImage(UIImage(named: "control-play"), for: .normal)
}
These examples are useful if you're creating your own controls, but if you use a AVPlayerViewController, then the controls come built in.
I solved a lot of issues by using the following code. Issues were : -
const sequelize = new Sequelize("test", "root", "root", {
host: "127.0.0.1",
dialect: "mysql",
port: "8889",
connectionLimit: 10,
socketPath: "/Applications/MAMP/tmp/mysql/mysql.sock",
// It will disable logging
logging: false
});
We can declare the function such that, it returns a structure type user defined variable or a pointer to it . And by the property of a structure, we know that a structure in C can hold multiple values of asymmetrical types (i.e. one int variable, four char variables, two float variables and so on…)
Just because java's implementation of Cloneable is broken it doesn't mean you can't create one of your own.
If OP real purpose was to create a deep clone, i think that it is possible to create an interface like this:
public interface Cloneable<T> {
public T getClone();
}
then use the prototype constructor mentioned before to implement it:
public class AClass implements Cloneable<AClass> {
private int value;
public AClass(int value) {
this.vaue = value;
}
protected AClass(AClass p) {
this(p.getValue());
}
public int getValue() {
return value;
}
public AClass getClone() {
return new AClass(this);
}
}
and another class with an AClass object field:
public class BClass implements Cloneable<BClass> {
private int value;
private AClass a;
public BClass(int value, AClass a) {
this.value = value;
this.a = a;
}
protected BClass(BClass p) {
this(p.getValue(), p.getA().getClone());
}
public int getValue() {
return value;
}
public AClass getA() {
return a;
}
public BClass getClone() {
return new BClass(this);
}
}
In this way you can easely deep clone an object of class BClass without need for @SuppressWarnings or other gimmicky code.
The Statement
gives you the following option:
Statement stmt = con.createStatement();
stmt.addBatch("INSERT INTO employees VALUES (1000, 'Joe Jones')");
stmt.addBatch("INSERT INTO departments VALUES (260, 'Shoe')");
stmt.addBatch("INSERT INTO emp_dept VALUES (1000, 260)");
// submit a batch of update commands for execution
int[] updateCounts = stmt.executeBatch();
Consider see this answer, specially if you want use generics in List
Spring RestTemplate and generic types ParameterizedTypeReference collections like List<T>
What you wrote sends a list of newline separated file names (and paths) to rm
, but rm doesn't know what to do with that input. It's only expecting command line parameters.
xargs
takes input, usually separated by newlines, and places them on the command line, so adding xargs makes what you had work:
find . -name .svn | xargs rm -fr
xargs
is intelligent enough that it will only pass as many arguments to rm
as it can accept. Thus, if you had a million files, it might run rm
1,000,000/65,000 times (if your shell could accept 65,002 arguments on the command line {65k files + 1 for rm + 1 for -fr}).
As persons have adeptly pointed out, the following also work:
find . -name .svn -exec rm -rf {} \;
find . -depth -name .svn -exec rm -fr {} \;
find . -type d -name .svn -print0|xargs -0 rm -rf
The first two -exec
forms both call rm
for each folder being deleted, so if you had 1,000,000 folders, rm
would be invoked 1,000,000 times. This is certainly less than ideal. Newer implementations of rm
allow you to conclude the command with a +
indicating that rm
will accept as many arguments as possible:
find . -name .svn -exec rm -rf {} +
The last find/xargs version uses print0, which makes find generate output that uses \0
as a terminator rather than a newline. Since POSIX systems allow any character but \0
in the filename, this is truly the safest way to make sure that the arguments are correctly passed to rm
or the application being executed.
In addition, there's a -execdir
that will execute rm
from the directory in which the file was found, rather than at the base directory and a -depth
that will start depth first.
The problem seems to happen when you have an alias the same name as the objects property. Hibernate seems to pick up the alias and use it in the sql. I found this documented here and here, and I believe it to be a bug in Hibernate, although I am not sure that the Hibernate team agrees.
Either way, I have found a simple work around that works in my case. Your mileage may vary. The details are below, I tried to simplify the code for this sample so I apologize for any errors or typo's:
Criteria criteria = session.createCriteria(MyClass.class)
.setProjection(Projections.projectionList()
.add(Projections.property("sectionHeader"), "sectionHeader")
.add(Projections.property("subSectionHeader"), "subSectionHeader")
.add(Projections.property("sectionNumber"), "sectionNumber"))
.add(Restrictions.ilike("sectionHeader", sectionHeaderVar)) // <- Problem!
.setResultTransformer(Transformers.aliasToBean(MyDTO.class));
Would produce this sql:
select
this_.SECTION_HEADER as y1_,
this_.SUB_SECTION_HEADER as y2_,
this_.SECTION_NUMBER as y3_,
from
MY_TABLE this_
where
( lower(y1_) like ? )
Which was causing an error: java.sql.SQLException: ORA-00904: "Y1_": invalid identifier
But, when I changed my restriction to use "this", like so:
Criteria criteria = session.createCriteria(MyClass.class)
.setProjection(Projections.projectionList()
.add(Projections.property("sectionHeader"), "sectionHeader")
.add(Projections.property("subSectionHeader"), "subSectionHeader")
.add(Projections.property("sectionNumber"), "sectionNumber"))
.add(Restrictions.ilike("this.sectionHeader", sectionHeaderVar)) // <- Problem Solved!
.setResultTransformer(Transformers.aliasToBean(MyDTO.class));
It produced the following sql and my problem was solved.
select
this_.SECTION_HEADER as y1_,
this_.SUB_SECTION_HEADER as y2_,
this_.SECTION_NUMBER as y3_,
from
MY_TABLE this_
where
( lower(this_.SECTION_HEADER) like ? )
Thats, it! A pretty simple fix to a painful problem. I don't know how this fix would translate to the query by example problem, but it may get you closer.
I faced the same issue, spent too much calories searching for the right fix until I decided to settle down with file reading:
Properties configProps = new Properties();
InputStream iStream = new ClassPathResource("myapp-test.properties").getInputStream();
InputStream iStream = getConfigFile();
configProps.load(iStream);
One way to do that is to make all your users' devices subscribe to a topic. That way when you target a message to a specific topic, all devices will get it. I think this how the Notifications section in the Firebase console does it.
You could download Better Touch Tools. It's an app that allows you to make custom key-bindings and shortcuts over your entire system or individual apps. Using it, you could make a shortcut in the terminal that emulates ctrl-a/ctrl-e whenever you press cmd-left/cmd-right, respectively. I definitely recommend it! I've been using it for years and I have over 50 shortcuts spread across several different apps.
If data already exists in the column you should do:
ALTER TABLE tbl_name ALTER COLUMN col_name TYPE integer USING col_name::integer;
As pointed out by @nobu and @jonathan-porter in comments to @derek-kromm's answer.
To simply repeat the same letter 10 times:
string_val = "x" * 10 # gives you "xxxxxxxxxx"
And if you want something more complex, like n
random lowercase letters, it's still only one line of code (not counting the import statements and defining n
):
from random import choice
from string import ascii_lowercase
n = 10
string_val = "".join(choice(ascii_lowercase) for i in range(n))
There is also an option to use Handler -> postDelayed
Handler().postDelayed({
//doSomethingHere()
}, 1000)
As far as I know, you can't ask the browser if any input on the screen has focus, you have to set up some sort of focus tracking.
I usually have a variable called "noFocus" and set it to true. Then I add a focus event to all inputs that makes noFocus false. Then I add a blur event to all inputs that set noFocus back to true.
I have a MooTools class that handles this quite easily, I'm sure you could create a jquery plugin to do the same.
Once that's created, you could do check noFocus before doing any border swapping.
long dateTime = DateTime.Now.Ticks;
Console.WriteLine(dateTime);
Console.WriteLine(new DateTime(dateTime));
Console.ReadKey();
use datetime library http://docs.python.org/library/datetime.html look up 9.1.7. especiall strptime() strftime() Behavior¶ examples http://pleac.sourceforge.net/pleac_python/datesandtimes.html
If you are not worried about security and you're simply looking to start a docker container on the host from within another docker container like the OP, you can share the docker server running on the host with the docker container by sharing it's listen socket.
Please see https://docs.docker.com/engine/security/security/#docker-daemon-attack-surface and see if your personal risk tolerance allows this for this particular application.
You can do this by adding the following volume args to your start command
docker run -v /var/run/docker.sock:/var/run/docker.sock ...
or by sharing /var/run/docker.sock within your docker compose file like this:
version: '3'
services:
ci:
command: ...
image: ...
volumes
- /var/run/docker.sock:/var/run/docker.sock
When you run the docker start command within your docker container, the docker server running on your host will see the request and provision the sibling container.
credit: http://jpetazzo.github.io/2015/09/03/do-not-use-docker-in-docker-for-ci/
If you want to fill NaN for a specific column you can use loc:
d1 = {"Col1" : ['A', 'B', 'C'],
"fruits": ['Avocado', 'Banana', 'NaN']}
d1= pd.DataFrame(d1)
output:
Col1 fruits
0 A Avocado
1 B Banana
2 C NaN
d1.loc[ d1.Col1=='C', 'fruits' ] = 'Carrot'
output:
Col1 fruits
0 A Avocado
1 B Banana
2 C Carrot
One tiny addition to JB Jansen's answer - in the main readdir()
loop I'd add this:
if (dir->d_type == DT_REG)
{
printf("%s\n", dir->d_name);
}
Just checking if it's really file, not (sym)link, directory, or whatever.
NOTE: more about struct dirent
in libc
documentation.
If the columns in df1 is a subset of those in df2 (by column names):
df3 <- rbind(df1, df2[, names(df1)])
Default values are only used if the arguments are not specified. In your case you did specify the arguments - both were supplied, with a value of NULL. (Yes, in this case NULL is considered a real value :-). Try:
EXEC TEST()
Share and enjoy.
Addendum: The default values for procedure parameters are certainly buried in a system table somewhere (see the SYS.ALL_ARGUMENTS
view), but getting the default value out of the view involves extracting text from a LONG field, and is probably going to prove to be more painful than it's worth. The easy way is to add some code to the procedure:
CREATE OR REPLACE PROCEDURE TEST(X IN VARCHAR2 DEFAULT 'P',
Y IN NUMBER DEFAULT 1)
AS
varX VARCHAR2(32767) := NVL(X, 'P');
varY NUMBER := NVL(Y, 1);
BEGIN
DBMS_OUTPUT.PUT_LINE('X=' || varX || ' -- ' || 'Y=' || varY);
END TEST;
The way to do this is to implement the Thread.UncaughtExceptionHandler
interface and pass it to Thread.setDefaultUncaughtExceptionHandler()
at the beginning of your Activity's onCreate()
. Here is the implementation class TopExceptionHandler
.
public class TopExceptionHandler implements Thread.UncaughtExceptionHandler {
private Thread.UncaughtExceptionHandler defaultUEH;
private Activity app = null;
public TopExceptionHandler(Activity app) {
this.defaultUEH = Thread.getDefaultUncaughtExceptionHandler();
this.app = app;
}
public void uncaughtException(Thread t, Throwable e) {
StackTraceElement[] arr = e.getStackTrace();
String report = e.toString()+"\n\n";
report += "--------- Stack trace ---------\n\n";
for (int i=0; i<arr.length; i++) {
report += " "+arr[i].toString()+"\n";
}
report += "-------------------------------\n\n";
// If the exception was thrown in a background thread inside
// AsyncTask, then the actual exception can be found with getCause
report += "--------- Cause ---------\n\n";
Throwable cause = e.getCause();
if(cause != null) {
report += cause.toString() + "\n\n";
arr = cause.getStackTrace();
for (int i=0; i<arr.length; i++) {
report += " "+arr[i].toString()+"\n";
}
}
report += "-------------------------------\n\n";
try {
FileOutputStream trace = app.openFileOutput("stack.trace",
Context.MODE_PRIVATE);
trace.write(report.getBytes());
trace.close();
} catch(IOException ioe) {
// ...
}
defaultUEH.uncaughtException(t, e);
}
}
Note We let the Android framework's defaultUEH to handle it.
At the top of your Activity register an instance of above class like this:
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Thread.setDefaultUncaughtExceptionHandler(new TopExceptionHandler(this));
...
This handler saves the trace in a file. When ReaderScope
restarts next time, it detects the file and prompts the user if he/she wants to email it to the developer.
To Email the Stack Trace, execute following code to pack it in an email.
try {
BufferedReader reader = new BufferedReader(
new InputStreamReader(ReaderScopeActivity.this.openFileInput("stack.trace")));
while((line = reader.readLine()) != null) {
trace += line+"\n";
}
} catch(FileNotFoundException fnfe) {
// ...
} catch(IOException ioe) {
// ...
}
Intent sendIntent = new Intent(Intent.ACTION_SEND);
String subject = "Error report";
String body = "Mail this to [email protected]: " + "\n" + trace + "\n";
sendIntent.putExtra(Intent.EXTRA_EMAIL, new String[] {"[email protected]"});
sendIntent.putExtra(Intent.EXTRA_TEXT, body);
sendIntent.putExtra(Intent.EXTRA_SUBJECT, subject);
sendIntent.setType("message/rfc822");
ReaderScopeActivity.this.startActivity(Intent.createChooser(sendIntent, "Title:"));
ReaderScopeActivity.this.deleteFile("stack.trace");
Or you can also use ACRA Error Reporting System.Just Include the ACRA.jar in your project libs and use the below code snippet before your launcher activity class declaration
@ReportsCrashes(formKey = "", mailTo = "[email protected];[email protected]", mode = ReportingInteractionMode.SILENT)
or You can try this from console:-
adb logcat -b crash
If you're looking for a document-level key event handling, then binding it during componentDidMount
is the best way (as shown by Brad Colthurst's codepen example):
class ActionPanel extends React.Component {
constructor(props){
super(props);
this.escFunction = this.escFunction.bind(this);
}
escFunction(event){
if(event.keyCode === 27) {
//Do whatever when esc is pressed
}
}
componentDidMount(){
document.addEventListener("keydown", this.escFunction, false);
}
componentWillUnmount(){
document.removeEventListener("keydown", this.escFunction, false);
}
render(){
return (
<input/>
)
}
}
Note that you should make sure to remove the key event listener on unmount to prevent potential errors and memory leaks.
EDIT: If you are using hooks, you can use this useEffect
structure to produce a similar effect:
const ActionPanel = (props) => {
const escFunction = useCallback((event) => {
if(event.keyCode === 27) {
//Do whatever when esc is pressed
}
}, []);
useEffect(() => {
document.addEventListener("keydown", escFunction, false);
return () => {
document.removeEventListener("keydown", escFunction, false);
};
}, []);
return (
<input />
)
};
It is simple. The first thing that you have to understand the design of the Python interpreter. It doesn't allocate memory for all the variables basically if any two or more variable has the same value it just map to that value.
let's go to the code example,
In [6]: a = 10
In [7]: id(a)
Out[7]: 10914656
In [8]: b = 10
In [9]: id(b)
Out[9]: 10914656
In [10]: c = 11
In [11]: id(c)
Out[11]: 10914688
In [12]: d = 21
In [13]: id(d)
Out[13]: 10915008
In [14]: e = 11
In [15]: id(e)
Out[15]: 10914688
In [16]: e = 21
In [17]: id(e)
Out[17]: 10915008
In [18]: e is d
Out[18]: True
In [19]: e = 30
In [20]: id(e)
Out[20]: 10915296
From the above output, variables a and b shares the same memory, c and d has different memory when I create a new variable e and store a value (11) which is already present in the variable c so it mapped to that memory location and doesn't create a new memory when I change the value present in the variable e to 21 which is already present in the variable d so now variables d and e share the same memory location. At last, I change the value in the variable e to 30 which is not stored in any other variable so it creates a new memory for e.
so any variable which is having same value shares the memory.
Not for list and dictionary objects
let's come to your question.
when multiple keys have same value then all shares same memory so the thing that you expect is already there in python.
you can simply use it like this
In [49]: dictionary = {
...: 'k1':1,
...: 'k2':1,
...: 'k3':2,
...: 'k4':2}
...:
...:
In [50]: id(dictionary['k1'])
Out[50]: 10914368
In [51]: id(dictionary['k2'])
Out[51]: 10914368
In [52]: id(dictionary['k3'])
Out[52]: 10914400
In [53]: id(dictionary['k4'])
Out[53]: 10914400
From the above output, the key k1 and k2 mapped to the same address which means value one stored only once in the memory which is multiple key single value dictionary this is the thing you want. :P
I was facing the same issue and the reason was single backslah. I used double backslash in my "Data source" and it worked
connetionString = "Data Source=localhost\\SQLEXPRESS;Database=databasename;Integrated Security=SSPI";
>>> x = 2.51
>>> x*100
250.99999999999997
the floating point numbers are inaccurate. in this case, it is 250.99999999999999, which is really close to 251, but int() truncates the decimal part, in this case 250.
you should take a look at the Decimal module or maybe if you have to do a lot of calculation at the mpmath library http://code.google.com/p/mpmath/ :),
Man, check the doc.
for example:
var arr = [ 4, "Pete", 8, "John" ];
console.log(jQuery.inArray( "John", arr ) == 3);
On OS X, to open a new Chrome window - without having to close the already open windows first - pass in the additional -n flag. Make sure to specify empty string for data-dir (necessary for newer versions of Chrome, like v50 something+).
open -na /Applications/Google\ Chrome.app/ --args --disable-web-security --user-data-dir=""
I found that using Chrome 60+ on Mac OS X Sierra, the above command no longer worked, but a slight modification does:
open -n -a /Applications/Google\ Chrome.app/Contents/MacOS/Google\ Chrome --args --user-data-dir="/tmp/chrome_dev_sess_1" --disable-web-security
The data directory path is important. Even if you're standing in your home directory when issuing the command, you can't simply refer to a local directory. It needs to be an absolute path.
That is a C++ standard library header file for input output streams. It includes functionality to read and write from streams. You only need to include it if you wish to use streams.
For Http Request Default Port number is 80
For Https Default Port Number is 443
For Sql Server Default Port Number is 1433
You can also write a custom query using @Query
@Query(value = "from EntityClassTable t where yourDate BETWEEN :startDate AND :endDate")
public List<EntityClassTable> getAllBetweenDates(@Param("startDate")Date startDate,@Param("endDate")Date endDate);
The SyntaxError: unexpected EOF while parsing
means that the end of your source code was reached before all code blocks were completed. A code block starts with a statement like for i in range(100):
and requires at least one line afterwards that contains code that should be in it.
It seems like you were executing your program line by line in the ipython console. This works for single statements like a = 3
but not for code blocks like for loops. See the following example:
In [1]: for i in range(100):
File "<ipython-input-1-ece1e5c2587f>", line 1
for i in range(100):
^
SyntaxError: unexpected EOF while parsing
To avoid this error, you have to enter the whole code block as a single input:
In [2]: for i in range(5):
...: print(i, end=', ')
0, 1, 2, 3, 4,
Use JodaTime for this. It is much better than the standard Java DateTime Apis. Here is the code in JodaTime for calculating difference in days:
private static void dateDiff() {
System.out.println("Calculate difference between two dates");
System.out.println("=================================================================");
DateTime startDate = new DateTime(2000, 1, 19, 0, 0, 0, 0);
DateTime endDate = new DateTime();
Days d = Days.daysBetween(startDate, endDate);
int days = d.getDays();
System.out.println(" Difference between " + endDate);
System.out.println(" and " + startDate + " is " + days + " days.");
}
If you are crashing than you probably need [weak self]
My guess is that the block you are creating is somehow still wired up.
Create a prepareForReuse and try clearing the onTextViewEditClosure block inside that.
func prepareForResuse() {
onTextViewEditClosure = nil
textView.delegate = nil
}
See if that prevents the crash. (It's just a guess).
Your code works fine, except that the barplot is ordered from low to high. When you want to order the bars from high to low, you will have to add a -
sign before value
:
ggplot(corr.m, aes(x = reorder(miRNA, -value), y = value, fill = variable)) +
geom_bar(stat = "identity")
which gives:
Used data:
corr.m <- structure(list(miRNA = structure(c(5L, 2L, 3L, 6L, 1L, 4L), .Label = c("mmu-miR-139-5p", "mmu-miR-1983", "mmu-miR-301a-3p", "mmu-miR-5097", "mmu-miR-532-3p", "mmu-miR-96-5p"), class = "factor"),
variable = structure(c(1L, 1L, 1L, 1L, 1L, 1L), .Label = "pos", class = "factor"),
value = c(7L, 75L, 70L, 5L, 10L, 47L)),
class = "data.frame", row.names = c("1", "2", "3", "4", "5", "6"))
Create the Button
and add it to Form.Controls
list to display it on your form:
Button buttonOk = new Button();
buttonOk.Location = new Point(295, 45); //or what ever position you want it to give
buttonOk.Text = "OK"; //or what ever you want to write over it
buttonOk.Click += new EventHandler(buttonOk_Click);
this.Controls.Add(buttonOk); //here you add it to the Form's Controls list
Create the button click method here:
void buttonOk_Click(object sender, EventArgs e)
{
MessageBox.Show("clicked");
this.Close(); //all your choice to close it or remove this line
}
I had the same error when I tried to migrate Drupal database to a new local apache server(I am using XAMPP on Windows machine). Actually I don't know the meaning of this error, but after trying steps below, I imported the database without errors. Hope this could help:
Changing php.ini at C:\xampp\php\php.ini
max_execution_time = 600
max_input_time = 600
memory_limit = 1024M
post_max_size = 1024M
Changing my.ini at C:\xampp\mysql\bin\my.ini
max_allowed_packet = 1024M
It has to be a constant - the value has to be computable at the time that the procedure is created, and that one computation has to provide the value that will always be used.
Look at the definition of sys.all_parameters
:
default_value
sql_variant
Ifhas_default_value
is 1, the value of this column is the value of the default for the parameter; otherwise,NULL
.
That is, whatever the default for a parameter is, it has to fit in that column.
As Alex K pointed out in the comments, you can just do:
CREATE PROCEDURE [dbo].[problemParam]
@StartDate INT = NULL,
@EndDate INT = NULL
AS
BEGIN
SET @StartDate = COALESCE(@StartDate,CONVERT(INT,(CONVERT(CHAR(8),GETDATE()-130,112))))
provided that NULL
isn't intended to be a valid value for @StartDate
.
As to the blog post you linked to in the comments - that's talking about a very specific context - that, the result of evaluating GETDATE()
within the context of a single query is often considered to be constant. I don't know of many people (unlike the blog author) who would consider a separate expression inside a UDF to be part of the same query as the query that calls the UDF.
If, after reading the other questions and viewing the links mentioned in the comment sections, you still can't figure it out, read on.
First of all, where you're going wrong is the offset.
It should look more like this...
set mydate=%date:~10,4%%date:~6,2%/%date:~4,2%
echo %mydate%
If the date was Tue 12/02/2013
then it would display it as 2013/02/12
.
To remove the slashes, the code would look more like
set mydate=%date:~10,4%%date:~7,2%%date:~4,2%
echo %mydate%
which would output 20130212
And a hint for doing it in the future, if mydate
equals something like %date:~10,4%%date:~7,2%
or the like, you probably forgot a tilde (~).
It's a table-valued function, but you're using it as a scalar function.
Try:
where Emp_Id IN (SELECT i.items FROM dbo.Splitfn(@Id,',') AS i)
But... also consider changing your function into an inline TVF, as it'll perform better.
You can achieve what you are saying by using Immediately Invoked Function Expression (IIFE)
render() {
return (
<View style={styles.container}>
{(() => {
if (this.state == 'news'){
return (
<Text>data</Text>
)
}
return null;
})()}
</View>
)
}
Here is the working example:
But, In your case, you can stick with the ternary operator
You can use Calendar class :
Calendar cal = Calendar.getInstance();
cal.add(Calendar.DATE, -7);
System.out.println("Date = "+ cal.getTime());
But as @Sean Patrick Floyd mentioned , Joda-time is the best Java library for Date.
No, one per customer prior to Java 7.
You can catch a superclass, like java.lang.Exception, as long as you take the same action in all cases.
try {
// some code
} catch(Exception e) { //All exceptions are caught here as all are inheriting java.lang.Exception
e.printStackTrace();
}
But that might not be the best practice. You should only catch an exception when you have a strategy for actually handling it - and logging and rethrowing is not "handling it". If you don't have a corrective action, better to add it to the method signature and let it bubble up to someone that can handle the situation.
you can make a shell script with those commands, and then chmod +x <scriptname.sh>
, and then just run it by
./scriptname.sh
Its very simple to write a bash script
Mockup sh file:
#!/bin/sh
sudo command1
sudo command2
.
.
.
sudo commandn
Mistake in original post is acquire() call set inside the try loop. Here is a correct approach to use "binary" semaphore (Mutex):
semaphore.acquire();
try {
//do stuff
} catch (Exception e) {
//exception stuff
} finally {
semaphore.release();
}
I think the core of this question is about virtual methods and polymorphism, not the destructor specifically. Here is a clearer example:
class A
{
public:
A() {}
virtual void foo()
{
cout << "This is A." << endl;
}
};
class B : public A
{
public:
B() {}
void foo()
{
cout << "This is B." << endl;
}
};
int main(int argc, char* argv[])
{
A *a = new B();
a->foo();
if(a != NULL)
delete a;
return 0;
}
Will print out:
This is B.
Without virtual
it will print out:
This is A.
And now you should understand when to use virtual destructors.
Possible alternatives
js-floating-table-headers
js-floating-table-headers (Google Code)
In Drupal
I have a Drupal 6 site. I was on the admin "modules" page, and noticed the tables had this exact feature!
Looking at the code, it seems to be implemented by a file called tableheader.js
. It applies the feature on all tables with the class sticky-enabled
.
For a Drupal site, I'd like to be able to make use of that tableheader.js
module as-is for user content. tableheader.js
doesn't seem to be present on user content pages in Drupal. I posted a forum message to ask how to modify the Drupal theme so it's available. According to a response, tableheader.js
can be added to a Drupal theme using drupal_add_js()
in the theme's template.php
as follows:
drupal_add_js('misc/tableheader.js', 'core');
You can use the strstr
function:
$haystack = "I know programming";
$needle = "know";
$flag = strstr($haystack, $needle);
if ($flag){
echo "true";
}
Without using an inbuilt function:
$haystack = "hello world";
$needle = "llo";
$i = $j = 0;
while (isset($needle[$i])) {
while (isset($haystack[$j]) && ($needle[$i] != $haystack[$j])) {
$j++;
$i = 0;
}
if (!isset($haystack[$j])) {
break;
}
$i++;
$j++;
}
if (!isset($needle[$i])) {
echo "YES";
}
else{
echo "NO ";
}
This code helped me get this behaviour: With a list a,b,c, I should get compared ab, ac and bc, but any other pair would be excess / not needed.
import java.util.*;
import static java.lang.System.out;
// rl = rawList; lr = listReversed
ArrayList<String> rl = new ArrayList<String>();
ArrayList<String> lr = new ArrayList<String>();
rl.add("a");
rl.add("b");
rl.add("c");
rl.add("d");
rl.add("e");
rl.add("f");
lr.addAll(rl);
Collections.reverse(lr);
for (String itemA : rl) {
lr.remove(lr.size()-1);
for (String itemZ : lr) {
System.out.println(itemA + itemZ);
}
}
The loop goes as like in this picture: Triangular comparison visual example
or as this:
| f e d c b a
------------------------------
a | af ae ad ac ab ·
b | bf be bd bc ·
c | cf ce cd ·
d | df de ·
e | ef ·
f | ·
total comparisons is a triangular number (n * n-1)/2
Take a look at FileSaver.js. It provides a handy saveAs
function which takes care of most browser specific quirks.
I to had a similar doubt what I got to know was getActivity()
returns the Activity
to which the fragment is associated.
The getActivity()
method is used generally in static fragment as the associated activity will not be static and non static member cannot be used in static member.
Here is the complete article describing how to create role, modify roles, delete roles and manage roles using ASP.NET Identity. This also contains User interface, controller methods etc.
http://www.dotnetfunda.com/articles/show/2898/working-with-roles-in-aspnet-identity-for-mvc
Hope this helpls
Thanks
Try this:-
ALTER TABLE <TABLE NAME to be moved> MOVE TABLESPACE <destination TABLESPACE NAME>
Very nice suggestion from IVAN in comments so thought to add in my answer
Note: this will invalidate all table's indexes. So this command is usually followed by
alter index <owner>."<index_name>" rebuild;
Here's a pair of methods to convert from IPv4 to a correct integer and back:
public static uint ConvertFromIpAddressToInteger(string ipAddress)
{
var address = IPAddress.Parse(ipAddress);
byte[] bytes = address.GetAddressBytes();
// flip big-endian(network order) to little-endian
if (BitConverter.IsLittleEndian)
{
Array.Reverse(bytes);
}
return BitConverter.ToUInt32(bytes, 0);
}
public static string ConvertFromIntegerToIpAddress(uint ipAddress)
{
byte[] bytes = BitConverter.GetBytes(ipAddress);
// flip little-endian to big-endian(network order)
if (BitConverter.IsLittleEndian)
{
Array.Reverse(bytes);
}
return new IPAddress(bytes).ToString();
}
Example
ConvertFromIpAddressToInteger("255.255.255.254"); // 4294967294
ConvertFromIntegerToIpAddress(4294967294); // 255.255.255.254
Explanation
IP addresses are in network order (big-endian), while int
s are little-endian on Windows, so to get a correct value, you must reverse the bytes before converting on a little-endian system.
Also, even for IPv4
, an int
can't hold addresses bigger than 127.255.255.255
, e.g. the broadcast address (255.255.255.255)
, so use a uint
.
Instead of using ellipsis to solve the problem of overflowing text, I found that a disabled and styled input looked better and still allows the user to view and select the entire string if they need to.
<input disabled='disabled' style="border: 0; padding: 0; margin: 0" />
It looks like a text field but is highlight-able so more user friendly
Once you have cloned the repo, you have everything: you can then hg up branchname
or hg up tagname
to update your working copy.
UP: hg up
is a shortcut of hg update
, which also has hg checkout
alias for people with git
habits.
I'm answering on specific to this error code(08s01).
usually, MySql close socket connections are some interval of time that is wait_timeout defined on MySQL server-side which by default is 8hours. so if a connection will timeout after this time and the socket will throw an exception which SQLState is "08s01".
1.use connection pool to execute Query, make sure the pool class has a function to make an inspection of the connection members before it goes time_out.
2.give a value of <wait_timeout> greater than the default, but the largest value is 24 days
3.use another parameter in your connection URL, but this method is not recommended, and maybe deprecated.
This's weird!
I tested the solutions both sizeThatFits:
and [webView stringByEvaluatingJavaScriptFromString:@"document.body.scrollHeight"]
are NOT working for me.
However, I found an interesting easy way to get the right height of webpage content. Currently, I used it in my delegate method scrollViewDidScroll:
.
CGFloat contentHeight = scrollView.contentSize.height - CGRectGetHeight(scrollView.frame);
Verified in iOS 9.3 Simulator/Device, good luck!
EDIT:
Background: The html content is calculated by my string variable and HTTP content template, loaded by method loadHTMLString:baseURL:
, no registered JS scripts there.
Even after installing python-tk, python3-tk I was getting error your python is not configured for Tk.
So I additionally installed tk8.6-dev Then I build my Python again, run following again: make, make install.
When I did this I saw messages on screen that it is building _tkinter and related modules. Once that is done, I tried 'import tkinter" and it worked.
postgresql get seconds difference between timestamps
SELECT (
(extract (epoch from (
'2012-01-01 18:25:00'::timestamp - '2012-01-01 18:25:02'::timestamp
)
)
)
)::integer
which prints:
-2
Because the timestamps are two seconds apart. Take the number and divide by 60 to get minutes, divide by 60 again to get hours.
I would like to make a little bit more emphasis on some key differences between res.end()
& res.send()
with respect to response headers and why they are important.
1. res.send() will check the structure of your output and set header information accordingly.
app.get('/',(req,res)=>{
res.send('<b>hello</b>');
});
app.get('/',(req,res)=>{
res.send({msg:'hello'});
});
Where with res.end() you can only respond with text and it will not set "Content-Type"
app.get('/',(req,res)=>{
res.end('<b>hello</b>');
});
2. res.send() will set "ETag" attribute in the response header
app.get('/',(req,res)=>{
res.send('<b>hello</b>');
});
¿Why is this tag important?
The ETag HTTP response header is an identifier for a specific version of a resource. It allows caches to be more efficient, and saves bandwidth, as a web server does not need to send a full response if the content has not changed.
res.end()
will NOT set this header attribute
With date from PHP code I used something like this..
function getLocalDate(php_date) {
var dt = new Date(php_date);
var minutes = dt.getTimezoneOffset();
dt = new Date(dt.getTime() + minutes*60000);
return dt;
}
We can call it like this
var localdateObj = getLocalDate('2015-09-25T02:57:46');
You can use all
> all(1:6 %in% 0:36)
[1] TRUE
> all(1:60 %in% 0:36)
[1] FALSE
On a similar note, if you want to check whether any of the elements is TRUE you can use any
> any(1:6 %in% 0:36)
[1] TRUE
> any(1:60 %in% 0:36)
[1] TRUE
> any(50:60 %in% 0:36)
[1] FALSE
Very simple, no library required:
var date = new Date();
var firstDay = new Date(date.getFullYear(), date.getMonth(), 1);
var lastDay = new Date(date.getFullYear(), date.getMonth() + 1, 0);
or you might prefer:
var date = new Date(), y = date.getFullYear(), m = date.getMonth();
var firstDay = new Date(y, m, 1);
var lastDay = new Date(y, m + 1, 0);
Some browsers will treat two digit years as being in the 20th century, so that:
new Date(14, 0, 1);
gives 1 January, 1914. To avoid that, create a Date then set its values using setFullYear:
var date = new Date();
date.setFullYear(14, 0, 1); // 1 January, 14
Swift 5:
extension UIImage {
func cropped(rect: CGRect) -> UIImage? {
guard let cgImage = cgImage else { return nil }
UIGraphicsBeginImageContextWithOptions(rect.size, false, 0)
let context = UIGraphicsGetCurrentContext()
context?.translateBy(x: 0.0, y: self.size.height)
context?.scaleBy(x: 1.0, y: -1.0)
context?.draw(cgImage, in: CGRect(x: rect.minX, y: rect.minY, width: self.size.width, height: self.size.height), byTiling: false)
let croppedImage = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
return croppedImage
}
}
Shouldn't you be providing the credentials for your site, instead of passing the DefaultCredentials?
Something like request.Credentials = new NetworkCredential("UserName", "PassWord");
Also, remove request.UseDefaultCredentials = true; request.PreAuthenticate = true;
In addition to the solutions posted above, having gone through the exact same problem, make sure you check your HTML. More specifically whether you've properly labelled your elements, as well as class and id selectors. You can do this either manually or through a validator (https://validator.w3.org/).
For me, I missed the equal sign next to the class (<div class someDiv>
vs <div class = "someDiv"
>, hence why no CSS property was applied.
Attach gdb to one of the httpd child processes and reload or continue working and wait for a crash and then look at the backtrace. Do something like this:
$ ps -ef|grep httpd
0 681 1 0 10:38pm ?? 0:00.45 /Applications/MAMP/Library/bin/httpd -k start
501 690 681 0 10:38pm ?? 0:00.02 /Applications/MAMP/Library/bin/httpd -k start
...
Now attach gdb to one of the child processes, in this case PID 690 (columns are UID, PID, PPID, ...)
$ sudo gdb
(gdb) attach 690
Attaching to process 690.
Reading symbols for shared libraries . done
Reading symbols for shared libraries ....................... done
0x9568ce29 in accept$NOCANCEL$UNIX2003 ()
(gdb) c
Continuing.
Wait for crash... then:
(gdb) backtrace
Or
(gdb) backtrace full
Should give you some clue what's going on. If you file a bug report you should include the backtrace.
If the crash is hard to reproduce it may be a good idea to configure Apache to only use one child processes for handling requests. The config is something like this:
StartServers 1
MinSpareServers 1
MaxSpareServers 1
Use below code, it is give the size of view.
@Override
public void onWindowFocusChanged(boolean hasFocus) {
super.onWindowFocusChanged(hasFocus);
Log.e("WIDTH",""+view.getWidth());
Log.e("HEIGHT",""+view.getHeight());
}
It's nice to have when you need to use the index for some kind of manipulation and having the current element doesn't suffice. Take for instance a binary tree that's stored in an array. If you have a method that asks you to return a list of tuples that contains each nodes direct children then you need the index.
#0 -> 1,2 : 1 -> 3,4 : 2 -> 5,6 : 3 -> 7,8 ...
nodes = [0,1,2,3,4,5,6,7,8,9,10]
children = []
for i in range(len(nodes)):
leftNode = None
rightNode = None
if i*2 + 1 < len(nodes):
leftNode = nodes[i*2 + 1]
if i*2 + 2 < len(nodes):
rightNode = nodes[i*2 + 2]
children.append((leftNode,rightNode))
return children
Of course if the element you're working on is an object, you can just call a get children method. But yea, you only really need the index if you're doing some sort of manipulation.
Assuming their updates are on master, and you are on the branch you want to merge the changes into.
git remote add origin https://github.com/<github-username>/<repo-name>.git
git pull origin master
Also note that you will then want to push the merge back to your copy of the repository:
git push origin master
If you want to extend the amount of time permitted for an ASP.NET script to execute then increase the Server.ScriptTimeout
value. The default is 90 seconds for .NET 1.x and 110 seconds for .NET 2.0 and later.
For example:
// Increase script timeout for current page to five minutes
Server.ScriptTimeout = 300;
This value can also be configured in your web.config
file in the httpRuntime
configuration element:
<!-- Increase script timeout to five minutes -->
<httpRuntime executionTimeout="300"
... other configuration attributes ...
/>
Please note according to the MSDN documentation:
"This time-out applies only if the debug attribute in the compilation element is False. Therefore, if the debug attribute is True, you do not have to set this attribute to a large value in order to avoid application shutdown while you are debugging."
If you've already done this but are finding that your session is expiring then increase the
ASP.NET HttpSessionState.Timeout
value:
For example:
// Increase session timeout to thirty minutes
Session.Timeout = 30;
This value can also be configured in your web.config
file in the sessionState
configuration element:
<configuration>
<system.web>
<sessionState
mode="InProc"
cookieless="true"
timeout="30" />
</system.web>
</configuration>
If your script is taking several minutes to execute and there are many concurrent users then consider changing the page to an Asynchronous Page. This will increase the scalability of your application.
The other alternative, if you have administrator access to the server, is to consider this long running operation as a candidate for implementing as a scheduled task or a windows service.
I manage to solve this in excel 97-2003, in a file with .xls extension this way: I went to the page where I had the linked data, with the cursor over the imported data table, go to tab Design --> External Data Table --> Unlink Unlink all tables (conections), delete all conections in Data --> Conections --> Conections save your work and done! regards, Dan
You could skip the use of buttord, and instead just pick an order for the filter and see if it meets your filtering criterion. To generate the filter coefficients for a bandpass filter, give butter() the filter order, the cutoff frequencies Wn=[low, high]
(expressed as the fraction of the Nyquist frequency, which is half the sampling frequency) and the band type btype="band"
.
Here's a script that defines a couple convenience functions for working with a Butterworth bandpass filter. When run as a script, it makes two plots. One shows the frequency response at several filter orders for the same sampling rate and cutoff frequencies. The other plot demonstrates the effect of the filter (with order=6) on a sample time series.
from scipy.signal import butter, lfilter
def butter_bandpass(lowcut, highcut, fs, order=5):
nyq = 0.5 * fs
low = lowcut / nyq
high = highcut / nyq
b, a = butter(order, [low, high], btype='band')
return b, a
def butter_bandpass_filter(data, lowcut, highcut, fs, order=5):
b, a = butter_bandpass(lowcut, highcut, fs, order=order)
y = lfilter(b, a, data)
return y
if __name__ == "__main__":
import numpy as np
import matplotlib.pyplot as plt
from scipy.signal import freqz
# Sample rate and desired cutoff frequencies (in Hz).
fs = 5000.0
lowcut = 500.0
highcut = 1250.0
# Plot the frequency response for a few different orders.
plt.figure(1)
plt.clf()
for order in [3, 6, 9]:
b, a = butter_bandpass(lowcut, highcut, fs, order=order)
w, h = freqz(b, a, worN=2000)
plt.plot((fs * 0.5 / np.pi) * w, abs(h), label="order = %d" % order)
plt.plot([0, 0.5 * fs], [np.sqrt(0.5), np.sqrt(0.5)],
'--', label='sqrt(0.5)')
plt.xlabel('Frequency (Hz)')
plt.ylabel('Gain')
plt.grid(True)
plt.legend(loc='best')
# Filter a noisy signal.
T = 0.05
nsamples = T * fs
t = np.linspace(0, T, nsamples, endpoint=False)
a = 0.02
f0 = 600.0
x = 0.1 * np.sin(2 * np.pi * 1.2 * np.sqrt(t))
x += 0.01 * np.cos(2 * np.pi * 312 * t + 0.1)
x += a * np.cos(2 * np.pi * f0 * t + .11)
x += 0.03 * np.cos(2 * np.pi * 2000 * t)
plt.figure(2)
plt.clf()
plt.plot(t, x, label='Noisy signal')
y = butter_bandpass_filter(x, lowcut, highcut, fs, order=6)
plt.plot(t, y, label='Filtered signal (%g Hz)' % f0)
plt.xlabel('time (seconds)')
plt.hlines([-a, a], 0, T, linestyles='--')
plt.grid(True)
plt.axis('tight')
plt.legend(loc='upper left')
plt.show()
Here are the plots that are generated by this script:
port number 3306 is used for MySQL and tomcat using 8080 port.more port numbers are available for run the servers or software whatever may be for our instant compilation..8080 is default for number so only we are getting port error in eclipse IDE. jvm and tomcat always prefer the 8080.3306 is default port number for MySQL.So only do not want to mention every time as "localhost:3306"
<?php
$dbhost = 'localhost:3306';
//3306 default port number $dbhost='localhost'; is enough to specify the port number
//when we are utilizing xammp default port number is 8080.
$dbuser = 'root';
$dbpass = '';
$db='users';
$conn = mysqli_connect($dbhost, $dbuser, $dbpass,$db) or die ("could not connect to mysql");
// mysqli_select_db("users") or die ("no database");
if(! $conn ) {
die('Could not connect: ' . mysqli_error($conn));
}else{
echo 'Connected successfully';
}
?>
that's why Idon't like NULL values in the database at all.
I hope you are having it for a reason.
if ($_POST['location_id'] === '') {
$location_id = 'NULL';
} else {
$location_id = "'".$_POST['location_id']."'";
}
$notes = mysql_real_escape_string($_POST['notes']);
$ipid = mysql_real_escape_string($_POST['ipid']);
$sql="UPDATE addresses
SET notes='$notes', location_id=$location_id
WHERE ipid = '$ipid'";
echo $sql; //to see different queries this code produces
// and difference between NULL and 'NULL' in the query
Looks like you want git diff and/or git log. Also check out gitk
gitk path/to/file
git diff path/to/file
git log path/to/file
No. Unfortunately the Request object is only available until the page finishes loading - once it's complete, you'll lose all values in it unless they've been stored somewhere.
If you want to persist attributes through requests you need to either:
<input type="hidden" name="myhiddenvalue" value="<%= request.getParameter("value") %>" />
. This will then be available in the servlet as a request parameter.request.getSession()
- in a JSP this is available as simply session
)I recommend using the Session as it's easier to manage.
The thread is old, but maybe someone is still interested. The shortest form I found is further improvement on the example from ?lex and bmargulies. The execution tag will look like:
<execution>
<id>TheNameOfTheRelevantExecution</id>
<phase/>
</execution>
2 points I want to highlight:
After posting found it is already in stackoverflow: In a Maven multi-module project, how can I disable a plugin in one child?
If your code needs to be compatible with both Python 2 and Python 3, you can't directly use things like isinstance(s,bytes)
or isinstance(s,unicode)
without wrapping them in either try/except or a python version test, because bytes
is undefined in Python 2 and unicode
is undefined in Python 3.
There are some ugly workarounds. An extremely ugly one is to compare the name of the type, instead of comparing the type itself. Here's an example:
# convert bytes (python 3) or unicode (python 2) to str
if str(type(s)) == "<class 'bytes'>":
# only possible in Python 3
s = s.decode('ascii') # or s = str(s)[2:-1]
elif str(type(s)) == "<type 'unicode'>":
# only possible in Python 2
s = str(s)
An arguably slightly less ugly workaround is to check the Python version number, e.g.:
if sys.version_info >= (3,0,0):
# for Python 3
if isinstance(s, bytes):
s = s.decode('ascii') # or s = str(s)[2:-1]
else:
# for Python 2
if isinstance(s, unicode):
s = str(s)
Those are both unpythonic, and most of the time there's probably a better way.
Something like this?
<a href="#" onClick="MyWindow=window.open('http://www.google.com','MyWindow','width=600,height=300'); return false;">Click Here</a>
I believe the best method with jQuery is using .scrollTop()
:
var pos = $('body').scrollTop();
For visual c# console Application use:
Console.ReadLine();
Console.Read();
Console.ReadKey(true);
for visual c++ win32 console application use:
system("pause");
press ctrl+f5 to run the application.
open http://localhost:8080/ in browser, if you get tomcat home page. it means tomcat is running
Intellij 2018.2.5
Run => Edit Configurations => Choose Node on the left hand side => expand Environment => Shorten Command line options => choose Classpath file or JAR manifest
If you scale 1600x900
to 1280x720
you have
scale_x = 1280.0/1600
scale_y = 720.0/900
Then you can use it to find button size, and button position
button_width = 300 * scale_x
button_height = 300 * scale_y
button_x = 1440 * scale_x
button_y = 860 * scale_y
If you scale 1280x720
to 1600x900
you have
scale_x = 1600.0/1280
scale_y = 900.0/720
and rest is the same.
I add .0
to value to make float
- otherwise scale_x
, scale_y
will be rounded to integer
- in this example to 0
(zero) (Python 2.x)
Simple example to achieve the below:
ApplicationDbContext forumDB = new ApplicationDbContext();
MonitorDbContext monitor = new MonitorDbContext();
Just scope the properties in the main context: (used to create and maintain the DB) Note: Just use protected: (Entity is not exposed here)
public class ApplicationDbContext : IdentityDbContext<ApplicationUser>
{
public ApplicationDbContext()
: base("QAForum", throwIfV1Schema: false)
{
}
protected DbSet<Diagnostic> Diagnostics { get; set; }
public DbSet<Forum> Forums { get; set; }
public DbSet<Post> Posts { get; set; }
public DbSet<Thread> Threads { get; set; }
public static ApplicationDbContext Create()
{
return new ApplicationDbContext();
}
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
base.OnModelCreating(modelBuilder);
}
}
MonitorContext: Expose separate Entity here
public class MonitorDbContext: DbContext
{
public MonitorDbContext()
: base("QAForum")
{
}
public DbSet<Diagnostic> Diagnostics { get; set; }
// add more here
}
Diagnostics Model:
public class Diagnostic
{
[Key]
public Guid DiagnosticID { get; set; }
public string ApplicationName { get; set; }
public DateTime DiagnosticTime { get; set; }
public string Data { get; set; }
}
If you like you could mark all entities as protected inside the main ApplicationDbContext, then create additional contexts as needed for each separation of schemas.
They all use the same connection string, however they use separate connections, so do not cross transactions and be aware of locking issues. Generally your designing separation so this shouldn't happen anyway.
You also can do it with functional programming:
from functools import reduce
reduce(lambda df1, df2: df1.merge(df2, "outer"), mydfs)
It can be done using CSS alone. It works perfect on my machine in Firefox, Chrome and Opera browser under Ubuntu 12.04.
CSS :
.hover_img a { position:relative; }
.hover_img a span { position:absolute; display:none; z-index:99; }
.hover_img a:hover span { display:block; }
HTML :
<div class="hover_img">
<a href="#">Show Image<span><img src="images/01.png" alt="image" height="100" /></span></a>
</div>
There is a problem with the string you are calling a json. I have made some changes to it below. If you properly format the string to a correct json, the code below works.
$str = '{
"action" : "create",
"record": {
"type": "n$product",
"fields": {
"nname": "Bread",
"nprice": 2.11
},
"namespaces": { "my.demo": "n" }
}
}';
$response = json_decode($str, TRUE);
echo '<br> action' . $response["action"] . '<br><br>';
I had the same problem. My solution was to make all vectors numeric.
Just a side note for anyone that stumbles onto this same inquiry... My Operating System is 64 bit - so of course I downloaded the 64 bit MySQL driver... however, my Office applications are 32 bit... Once I downloaded the 32 bit version, the error went away and I could move forward.
It is better to avoid writing out temporary spool files. Use a PL/SQL block. You can run this from SQL*Plus or put this thing into a package or procedure. The join to USER_TABLES is there to avoid view constraints.
It's unlikely that you really want to disable all constraints (including NOT NULL, primary keys, etc). You should think about putting constraint_type in the WHERE clause.
BEGIN
FOR c IN
(SELECT c.owner, c.table_name, c.constraint_name
FROM user_constraints c, user_tables t
WHERE c.table_name = t.table_name
AND c.status = 'ENABLED'
AND NOT (t.iot_type IS NOT NULL AND c.constraint_type = 'P')
ORDER BY c.constraint_type DESC)
LOOP
dbms_utility.exec_ddl_statement('alter table "' || c.owner || '"."' || c.table_name || '" disable constraint ' || c.constraint_name);
END LOOP;
END;
/
Enabling the constraints again is a bit tricker - you need to enable primary key constraints before you can reference them in a foreign key constraint. This can be done using an ORDER BY on constraint_type. 'P' = primary key, 'R' = foreign key.
BEGIN
FOR c IN
(SELECT c.owner, c.table_name, c.constraint_name
FROM user_constraints c, user_tables t
WHERE c.table_name = t.table_name
AND c.status = 'DISABLED'
ORDER BY c.constraint_type)
LOOP
dbms_utility.exec_ddl_statement('alter table "' || c.owner || '"."' || c.table_name || '" enable constraint ' || c.constraint_name);
END LOOP;
END;
/
check out my js lib for caching: https://github.com/hoangnd25/cacheJS
My blog post: New way to cache your data with Javascript
Saving cache:
cacheJS.set({blogId:1,type:'view'},'<h1>Blog 1</h1>');
cacheJS.set({blogId:2,type:'view'},'<h1>Blog 2</h1>', null, {author:'hoangnd'});
cacheJS.set({blogId:3,type:'view'},'<h1>Blog 3</h1>', 3600, {author:'hoangnd',categoryId:2});
Retrieving cache:
cacheJS.get({blogId: 1,type: 'view'});
Flushing cache
cacheJS.removeByKey({blogId: 1,type: 'view'});
cacheJS.removeByKey({blogId: 2,type: 'view'});
cacheJS.removeByContext({author:'hoangnd'});
Switching provider
cacheJS.use('array');
cacheJS.use('array').set({blogId:1},'<h1>Blog 1</h1>')};
I added these two lines to build.gradle file
compileJava.options.fork = true
compileJava.options.forkOptions.executable = 'C:\\Program Files\\Java\\jdk-11.0.8'
and it works
I am using windows and my project based on gradle
my jdk path -> 'C:\Program Files\Java\jdk-11.0.8'
please provide your jdk path
It's the destructor. This method is called when the instance of your class is destroyed:
Stack<int> *stack= new Stack<int>;
//do something
delete stack; //<- destructor is called here;
First, you have to lookup the correct ArrayList
in the HashMap
:
ArrayList<String> myAList = theHashMap.get(courseID)
Then, add the new grade to the ArrayList
:
myAList.add(newGrade)
It may be useful for someone, so I'll post it here.
I was missing this dependency on my pom.xml
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
</exclusion>
</exclusions>
</dependency>
The problem is your dataType
and the format of your data
parameter. I just tested this in a sandbox and the following works:
C#
[HttpPost]
public string ConvertLogInfoToXml(string jsonOfLog)
{
return Convert.ToString(jsonOfLog);
}
javascript
<input type="button" onclick="test()"/>
<script type="text/javascript">
function test() {
data = { prop: 1, myArray: [1, "two", 3] };
//'data' is much more complicated in my real application
var jsonOfLog = JSON.stringify(data);
$.ajax({
type: 'POST',
dataType: 'text',
url: "Home/ConvertLogInfoToXml",
data: "jsonOfLog=" + jsonOfLog,
success: function (returnPayload) {
console && console.log("request succeeded");
},
error: function (xhr, ajaxOptions, thrownError) {
console && console.log("request failed");
},
processData: false,
async: false
});
}
</script>
Pay special attention to data
, when sending text, you need to send a variable that matches the name of your parameter. It's not pretty, but it will get you your coveted unformatted string.
When running this, jsonOfLog looks like this in the server function:
jsonOfLog "{\"prop\":1,\"myArray\":[1,\"two\",3]}" string
The HTTP POST header:
Key Value
Request POST /Home/ConvertLogInfoToXml HTTP/1.1
Accept text/plain, */*; q=0.01
Content-Type application/x-www-form-urlencoded; charset=UTF-8
X-Requested-With XMLHttpRequest
Referer http://localhost:50189/
Accept-Language en-US
Accept-Encoding gzip, deflate
User-Agent Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.2; WOW64; Trident/6.0)
Host localhost:50189
Content-Length 42
DNT 1
Connection Keep-Alive
Cache-Control no-cache
Cookie EnableSSOUser=admin
The HTTP POST body:
jsonOfLog={"prop":1,"myArray":[1,"two",3]}
The response header:
Key Value
Cache-Control private
Content-Type text/html; charset=utf-8
Date Fri, 28 Jun 2013 18:49:24 GMT
Response HTTP/1.1 200 OK
Server Microsoft-IIS/8.0
X-AspNet-Version 4.0.30319
X-AspNetMvc-Version 4.0
X-Powered-By ASP.NET
X-SourceFiles =?UTF-8?B?XFxwc2ZcaG9tZVxkb2N1bWVudHNcdmlzdWFsIHN0dWRpbyAyMDEyXFByb2plY3RzXE12YzRQbGF5Z3JvdW5kXE12YzRQbGF5Z3JvdW5kXEhvbWVcQ29udmVydExvZ0luZm9Ub1htbA==?=
The response body:
{"prop":1,"myArray":[1,"two",3]}
As Svenmarim already stated, this mostly occurs because the ip adress is already in use.
This answer and its comments from the visualstudio developer community pointed me to the right direction. In my case i was trying to access my local IISExpress instance from my local network and therefore binded my ip adress with the same port which uses my IISExpress instance via
netsh http add urlacl url=http://192.168.1.42:58938/ user=everyone
After removing this binding via
netsh http delete urlacl url=http://192.168.1.42:58938/
it worked again.
This is how I do it, and Google does it my way.
=
and for ,
.In your case, since you're using 120 characters, you can break it after the assignment operator resulting in
private static final Map<Class<? extends Persistent>, PersistentHelper> class2helper =
new HashMap<Class<? extends Persistent>, PersistentHelper>();
In Java, and for this particular case, I would give two tabs (or eight spaces) after the break, depending on whether tabs or spaces are used for indentation.
This is of course a personal preference and if your project has its own convention for line-wrapping then that is what you should follow whether you like it or not.
For me it worked, by removing the jars in question from the war. With Maven, I just had to exclude for example
<dependency>
<groupId>org.jboss.resteasy</groupId>
<artifactId>resteasy-jaxb-provider</artifactId>
<version>${resteasy.version}</version>
<exclusions>
<exclusion>
<groupId>com.sun.istack</groupId>
<artifactId>istack-commons-runtime</artifactId>
</exclusion>
<exclusion>
<groupId>org.jvnet.staxex</groupId>
<artifactId>stax-ex</artifactId>
</exclusion>
<exclusion>
<groupId>org.glassfish.jaxb</groupId>
<artifactId>txw2</artifactId>
</exclusion>
<exclusion>
<groupId>com.sun.xml.fastinfoset</groupId>
<artifactId>FastInfoset</artifactId>
</exclusion>
</exclusions>
</dependency>
What if you do this (as was suggested earlier):
new_time = dfs['XYF']['TimeUS'].astype(float)
new_time_F = new_time / 1000000
The ?:
Operator returns one of two values depending on the value of a Boolean expression.
Condition-Expression ? Expression1 : Expression2
Find here more on ?:
operator, also know as a Ternary Operator:
The working solution for Integer number to binary conversion is below.
int main()
{
int num=241; //Assuming 16 bit integer
for(int i=15; i>=0; i--) cout<<((num >> i) & 1);
cout<<endl;
for(int i=0; i<16; i++) cout<<((num >> i) & 1);
cout<<endl;
return 0;
}
You can capture the cout<< part based on your own requirement.
A stored procedure is a named collection of SQL statements and procedural logic i.e, compiled, verified and stored in the server database. A stored procedure is typically treated like other database objects and controlled through server security mechanism.
Bad programming practice. Using a goto function is a complete no no in C programming.
Also include header file stdlib.h by writing #include <iostream.h>
for using exit()
function. Also remember that exit() function takes an integer argument . Use exit(0)
if the program completed successfully and exit(-1)
or exit function with any non zero value as the argument if the program has error.
A transaction is a sequence of one or more SQL operations that are treated as a unit.
Specifically, each transaction appears to run in isolation, and furthermore, if the system fails, each transaction is either executed in its entirety or not all.
The concept of transactions is motivated by two completely independent concerns. One has to do with concurrent access to the database by multiple clients, and the other has to do with having a system that is resilient to system failures.
Transaction supports what is known as the ACID properties:
This error can occur in several places, most commonly running further LINQ queries on top of a null collection. LINQ as Query Syntax can appear more null-safe than it is. Consider the following samples:
var filteredCollection = from item in getMyCollection()
orderby item.ReportDate
select item;
This code is not NULL SAFE, meaning that if getMyCollection()
returns a null, you'll get the Value cannot be null. Parameter name: source
error. Very annoying! But it makes perfect sense because LINQ Query syntax is just syntactic sugar for this equivalent code:
var filteredCollection = getMyCollection().OrderBy(x => x.ReportDate);
Which obviously will blow up if the starting method returns a null.
To prevent this, you can use a null coalescing operator in your LINQ query like so:
var filteredCollection = from item in getMyCollection() ??
Enumerable.Empty<CollectionItemClass>()
orderby item.ReportDate
select item;
However, you'll have to remember to do this in any related queries. The best approach (if you control the code that generates the collection) is to make it a coding practice to NEVER RETURN A NULL COLLECTION, EVER. In some cases, returning a null object from a method like "getCustomerById(string id)
" is fine, depending on your team coding style, but if you have a method that returns a collection of business objects, like "getAllcustomers()
" then it should NEVER return a null array/enumerable/etc. Always always always use an if
check, the null coalescing operator, or some other switch to return an empty array/list/enumerable etc, so that consumers of your method can freely LINQ over the results.
Communication between controllers is done though $emit
+ $on
/ $broadcast
+ $on
methods.
So in your case you want to call a method of Controller "One" inside Controller "Two", the correct way to do this is:
app.controller('One', ['$scope', '$rootScope'
function($scope) {
$rootScope.$on("CallParentMethod", function(){
$scope.parentmethod();
});
$scope.parentmethod = function() {
// task
}
}
]);
app.controller('two', ['$scope', '$rootScope'
function($scope) {
$scope.childmethod = function() {
$rootScope.$emit("CallParentMethod", {});
}
}
]);
While $rootScope.$emit
is called, you can send any data as second parameter.
Aside from @JsonIgnore
, there are a couple of other possibilities:
@JsonIgnoreProperties
on class may be usefulAdd a style with the attribute text-decoration:none;
:
There are a number of different ways of doing this.
Inline style:
<a href="xxx.html" style="text-decoration:none;">goto this link</a>
Inline stylesheet:
<html>
<head>
<style type="text/css">
a {
text-decoration:none;
}
</style>
</head>
<body>
<a href="xxx.html">goto this link</a>
</body>
</html>
External stylesheet:
<html>
<head>
<link rel="Stylesheet" href="stylesheet.css" />
</head>
<body>
<a href="xxx.html">goto this link</a>
</body>
</html>
stylesheet.css:
a {
text-decoration:none;
}
I have 2 ways of doing it:
if let thisShape = aShape as? Square
Or:
aShape.isKindOfClass(Square)
Here is a detailed example:
class Shape { }
class Square: Shape { }
class Circle: Shape { }
var aShape = Shape()
aShape = Square()
if let thisShape = aShape as? Square {
println("Its a square")
} else {
println("Its not a square")
}
if aShape.isKindOfClass(Square) {
println("Its a square")
} else {
println("Its not a square")
}
Edit: 3 now:
let myShape = Shape()
if myShape is Shape {
print("yes it is")
}
You cannot directly see the query result using mysql_query its only fires the query in mysql nothing else.
For getting the result you have to add a lil things in your script like
require_once('db.php');
$sql="SELECT * FROM modul1open WHERE idM1O>=(SELECT FLOOR( MAX( idM1O ) * RAND( ) ) FROM modul1open) ORDER BY idM1O LIMIT 1";
$result = mysql_query($sql);
//echo [$result];
while ($row = mysql_fetch_array($result, MYSQL_ASSOC)) {
print_r($row);
}
This will give you result;
How and where is
app.run()
used? After module definition or afterapp.config()
, afterapp.controller()
?
In your package.js E.g. /packages/dashboard/public/controllers/dashboard.js
Make it look like this
var app = angular.module('mean.dashboard', ['ui.bootstrap']);
app.controller('DashboardController', ['$scope', 'Global', 'Dashboard',
function($scope, Global, Dashboard) {
$scope.global = Global;
$scope.package = {
name: 'dashboard'
};
// ...
}
]);
app.run(function(editableOptions) {
editableOptions.theme = 'bs3'; // bootstrap3 theme. Can be also 'bs2', 'default'
});
metzelder's answer helped me fix the issue. however if you run the command npm cache clean
, it will give you a message
As of npm@5, the npm cache self-heals from corruption issues and data extracted from the cache is guaranteed to be valid
So, as of npm5 you can do by adding a --force
flag to the command.
So the command is:
npm cache clean --force
@ECHO off & SETLOCAL EnableDelayedExpansion
SET "_dir=" REM Must finish with '\'
SET "_ext=jpg"
SET "_toEdit=Vacation2010"
SET "_with=December"
FOR %%f IN ("%_dir%*.%_ext%") DO (
CALL :modifyString "%_toEdit%" "%_with%" "%%~Nf" fileName
RENAME "%%f" "!fileName!%%~Xf"
)
GOTO end
:modifyString what with in toReturn
SET "__in=%~3"
SET "__in=!__in:%~1=%~2!"
IF NOT "%~4" == "" (
SET %~4=%__in%
) ELSE (
ECHO %__in%
)
EXIT /B
:end
This script allows you to change the name of all the files that contain Vacation2010
with the same name, but with December
instead of Vacation2010
.
If you copy and paste the code, you have to save the .bat
in the same folder of the photos.
If you want to save the script in another directory [E.G. you have a favorite folder for the utilities] you have to change the value of _dir
with the path of the photos.
If you have to do the same work for other photos [or others files changig _ext
] you have to change the value of _toEdit
with the string you want to change [or erase] and the value of _with
with the string you want to put instead of _toEdit
[SET "_with="
if you simply want to erase the string specified in _toEdit
].
I just learned something new thanks to Artiso. I gave each module a name in the properties box. These names were also what I declared in the module. When I tried to call my second module, I kept getting an error: Compile error: Expected variable or procedure, not module
After reading Artiso's comment above about not having the same names, I renamed my second module, called it from the first, and problem solved. Interesting stuff! Thanks for the info Artiso!
In case my experience is unclear:
Module Name: AllFSGroupsCY Public Sub AllFSGroupsCY()
Module Name: AllFSGroupsPY Public Sub AllFSGroupsPY()
From AllFSGroupsCY()
Public Sub FSGroupsCY()
AllFSGroupsPY 'will error each time until the properties name is changed
End Sub
All of these are kinds of indices.
primary: must be unique, is an index, is (likely) the physical index, can be only one per table.
unique: as it says. You can't have more than one row with a tuple of this value. Note that since a unique key can be over more than one column, this doesn't necessarily mean that each individual column in the index is unique, but that each combination of values across these columns is unique.
index: if it's not primary or unique, it doesn't constrain values inserted into the table, but it does allow them to be looked up more efficiently.
fulltext: a more specialized form of indexing that allows full text search. Think of it as (essentially) creating an "index" for each "word" in the specified column.
I tested below code with SQL Server 2008 R2 Express and I believe we should have solution for all 6 steps you outlined. Let's take on them one-by-one:
We can enable TCP/IP protocol with WMI:
set wmiComputer = GetObject( _
"winmgmts:" _
& "\\.\root\Microsoft\SqlServer\ComputerManagement10")
set tcpProtocols = wmiComputer.ExecQuery( _
"select * from ServerNetworkProtocol " _
& "where InstanceName = 'SQLEXPRESS' and ProtocolName = 'Tcp'")
if tcpProtocols.Count = 1 then
' set tcpProtocol = tcpProtocols(0)
' I wish this worked, but unfortunately
' there's no int-indexed Item property in this type
' Doing this instead
for each tcpProtocol in tcpProtocols
dim setEnableResult
setEnableResult = tcpProtocol.SetEnable()
if setEnableResult <> 0 then
Wscript.Echo "Failed!"
end if
next
end if
I believe your solution will work, just make sure you specify the right port. I suggest we pick a different port than 1433 and make it a static port SQL Server Express will be listening on. I will be using 3456 in this post, but please pick a different number in the real implementation (I feel that we will see a lot of applications using 3456 soon :-)
We can use WMI again. Since we are using static port 3456, we just need to update two properties in IPAll section: disable dynamic ports and set the listening port to 3456
:
set wmiComputer = GetObject( _
"winmgmts:" _
& "\\.\root\Microsoft\SqlServer\ComputerManagement10")
set tcpProperties = wmiComputer.ExecQuery( _
"select * from ServerNetworkProtocolProperty " _
& "where InstanceName='SQLEXPRESS' and " _
& "ProtocolName='Tcp' and IPAddressName='IPAll'")
for each tcpProperty in tcpProperties
dim setValueResult, requestedValue
if tcpProperty.PropertyName = "TcpPort" then
requestedValue = "3456"
elseif tcpProperty.PropertyName ="TcpDynamicPorts" then
requestedValue = ""
end if
setValueResult = tcpProperty.SetStringValue(requestedValue)
if setValueResult = 0 then
Wscript.Echo "" & tcpProperty.PropertyName & " set."
else
Wscript.Echo "" & tcpProperty.PropertyName & " failed!"
end if
next
Note that I didn't have to enable any of the individual addresses to make it work, but if it is required in your case, you should be able to extend this script easily to do so.
Just a reminder that when working with WMI, WBEMTest.exe is your best friend!
I wish we could use WMI again, but unfortunately this setting is not exposed through WMI. There are two other options:
Use LoginMode
property of Microsoft.SqlServer.Management.Smo.Server
class, as described here.
Use LoginMode value in SQL Server registry, as described in this post. Note that by default the SQL Server Express instance is named SQLEXPRESS
, so for my SQL Server 2008 R2 Express instance the right registry key was
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server\MSSQL10_50.SQLEXPRESS\MSSQLServer
.
You got this one covered.
Since we are using a static port assigned to our SQL Server Express instance, there's no need to use instance name in the server address anymore.
SQLCMD -U sa -P newPassword -S 192.168.0.120,3456
Please let me know if this works for you (fingers crossed!).
I had two problems with the accepted answer.
Screen
class are incorrect when display scaling is used and your application is not declared dpiAware.Here's my updated solution using the Screen.AllScreens
static property and calling EnumDisplaySettings
using p/invoke to get the real screen resolution.
using System.Drawing;
using System.Linq;
using System.Runtime.InteropServices;
using System.Windows.Forms;
class Program
{
const int ENUM_CURRENT_SETTINGS = -1;
static void Main()
{
foreach (Screen screen in Screen.AllScreens)
{
DEVMODE dm = new DEVMODE();
dm.dmSize = (short)Marshal.SizeOf(typeof(DEVMODE));
EnumDisplaySettings(screen.DeviceName, ENUM_CURRENT_SETTINGS, ref dm);
using (Bitmap bmp = new Bitmap(dm.dmPelsWidth, dm.dmPelsHeight))
using (Graphics g = Graphics.FromImage(bmp))
{
g.CopyFromScreen(dm.dmPositionX, dm.dmPositionY, 0, 0, bmp.Size);
bmp.Save(screen.DeviceName.Split('\\').Last() + ".png");
}
}
}
[DllImport("user32.dll")]
public static extern bool EnumDisplaySettings(string lpszDeviceName, int iModeNum, ref DEVMODE lpDevMode);
[StructLayout(LayoutKind.Sequential)]
public struct DEVMODE
{
private const int CCHDEVICENAME = 0x20;
private const int CCHFORMNAME = 0x20;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 0x20)]
public string dmDeviceName;
public short dmSpecVersion;
public short dmDriverVersion;
public short dmSize;
public short dmDriverExtra;
public int dmFields;
public int dmPositionX;
public int dmPositionY;
public ScreenOrientation dmDisplayOrientation;
public int dmDisplayFixedOutput;
public short dmColor;
public short dmDuplex;
public short dmYResolution;
public short dmTTOption;
public short dmCollate;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 0x20)]
public string dmFormName;
public short dmLogPixels;
public int dmBitsPerPel;
public int dmPelsWidth;
public int dmPelsHeight;
public int dmDisplayFlags;
public int dmDisplayFrequency;
public int dmICMMethod;
public int dmICMIntent;
public int dmMediaType;
public int dmDitherType;
public int dmReserved1;
public int dmReserved2;
public int dmPanningWidth;
public int dmPanningHeight;
}
}
References:
https://stackoverflow.com/a/36864741/987968 http://pinvoke.net/default.aspx/user32/EnumDisplaySettings.html?diff=y
Can someone point me to a book or website which explains these basics clearly ?
You can check this XML Tutorial with examples.
But what about the encoding part ? Why is that necessary ?
W3C provides explanation about encoding :
"The document character set for XML and HTML 4.0 is Unicode (aka ISO 10646). This means that HTML browsers and XML processors should behave as if they used Unicode internally. But it doesn't mean that documents have to be transmitted in Unicode. As long as client and server agree on the encoding, they can use any encoding that can be converted to Unicode..."
To add to add to the previous answer, there is even a fourth way that can be used
import codecs
encoded4 = codecs.encode(original, 'utf-8')
print(encoded4)
To be able to call notify() you need to synchronize on the same object.
synchronized (someObject) {
someObject.wait();
}
/* different thread / object */
synchronized (someObject) {
someObject.notify();
}
It's a very late answer but I resolved the issue turning off the lazy loading:
db.Configuration.LazyLoadingEnabled = false;
See Davion's anwser in this post: https://stackoverflow.com/a/26429849/1804068
HTML:
<div class="parent">
<span id="mySpan">Something in English</span>
</div>
JQUERY
$('#mySpan').animate({'opacity': 0}, 400, function(){
$(this).html('Something in Spanish').animate({'opacity': 1}, 400);
});
urllib
has been split up in Python 3
.
The urllib.urlencode()
function is now urllib.parse.urlencode()
,
the urllib.urlopen()
function is now urllib.request.urlopen()
.
A couple of answers already mention that moment-timezone is the way to go with named timezone. I just want to clarify something about this library that was pretty confusing to me. There is a difference between these two statements:
moment.tz(date, format, timezone)
moment(date, format).tz(timezone)
Assuming that a timezone is not specified in the date passed in:
The first code takes in the date and assumes the timezone is the one passed in. The second one will take date, assume the timezone from the browser and then change the time and timezone according to the timezone passed in.
Example:
moment.tz('2018-07-17 19:00:00', 'YYYY-MM-DD HH:mm:ss', 'UTC').format() // "2018-07-17T19:00:00Z"
moment('2018-07-17 19:00:00', 'YYYY-MM-DD HH:mm:ss').tz('UTC').format() // "2018-07-18T00:00:00Z"
My timezone is +5 from utc. So in the first case it does not change and it sets the date and time to have utc timezone.
In the second case, it assumes the date passed in is in -5, then turns it into UTC, and that's why it spits out the date "2018-07-18T00:00:00Z"
NOTE: The format parameter is really important. If omitted moment might fall back to the Date class which can unpredictable behaviors
Assuming the timezone is specified in the date passed in:
In this case they both behave equally
Even though now I understand why it works that way, I thought this was a pretty confusing feature and worth explaining.
There are three basic types of join:
INNER
join compares two tables and only returns results where a match exists. Records from the 1st table are duplicated when they match multiple results in the 2nd. INNER joins tend to make result sets smaller, but because records can be duplicated this isn't guaranteed.CROSS
join compares two tables and return every possible combination of rows from both tables. You can get a lot of results from this kind of join that might not even be meaningful, so use with caution.OUTER
join compares two tables and returns data when a match is available or NULL values otherwise. Like with INNER join, this will duplicate rows in the one table when it matches multiple records in the other table. OUTER joins tend to make result sets larger, because they won't by themselves remove any records from the set. You must also qualify an OUTER join to determine when and where to add the NULL values:
LEFT
means keep all records from the 1st table no matter what and insert NULL values when the 2nd table doesn't match. RIGHT
means the opposite: keep all records from the 2nd table no matter what and insert NULL values whent he 1st table doesn't match. FULL
means keep all records from both tables, and insert a NULL value in either table if there is no match.Often you see will the OUTER
keyword omitted from the syntax. Instead it will just be "LEFT JOIN", "RIGHT JOIN", or "FULL JOIN". This is done because INNER and CROSS joins have no meaning with respect to LEFT, RIGHT, or FULL, and so these are sufficient by themselves to unambiguously indicate an OUTER join.
Here is an example of when you might want to use each type:
INNER
: You want to return all records from the "Invoice" table, along with their corresponding "InvoiceLines". This assumes that every valid Invoice will have at least one line.OUTER
: You want to return all "InvoiceLines" records for a particular Invoice, along with their corresponding "InventoryItem" records. This is a business that also sells service, such that not all InvoiceLines will have an IventoryItem.CROSS
: You have a digits table with 10 rows, each holding values '0' through '9'. You want to create a date range table to join against, so that you end up with one record for each day within the range. By CROSS-joining this table with itself repeatedly you can create as many consecutive integers as you need (given you start at 10 to 1st power, each join adds 1 to the exponent). Then use the DATEADD() function to add those values to your base date for the range.I had trouble getting this to work and added another solution for anyone wanting/ needing to use FromCollection.
Instead of:
@Html.CheckBoxFor(model => true, item.TemplateId)
Format html helper like so:
@Html.CheckBoxFor(model => model.SomeProperty, new { @class = "form-control", Name = "SomeProperty"})
Then in the viewmodel/model wherever your logic is:
public void Save(FormCollection frm)
{
// to do instantiate object.
instantiatedItem.SomeProperty = (frm["SomeProperty"] ?? "").Equals("true", StringComparison.CurrentCultureIgnoreCase);
// to do and save changes in database.
}
private void ResetAllProperties()
{
Type type = this.GetType();
PropertyInfo[] properties = (from c in type.GetProperties()
where c.Name.StartsWith("Doc")
select c).ToArray();
foreach (PropertyInfo item in properties)
{
if (item.PropertyType.FullName == "System.String")
item.SetValue(this, "", null);
}
}
I used the code block above to reset all string properties in my web user control object which names are started with "Doc".
After half a day of fiddling with this, found out that PDO had a bug where...
--
//This would run as expected:
$pdo->exec("valid-stmt1; valid-stmt2;");
--
//This would error out, as expected:
$pdo->exec("non-sense; valid-stmt1;");
--
//Here is the bug:
$pdo->exec("valid-stmt1; non-sense; valid-stmt3;");
It would execute the "valid-stmt1;"
, stop on "non-sense;"
and never throw an error. Will not run the "valid-stmt3;"
, return true and lie that everything ran good.
I would expect it to error out on the "non-sense;"
but it doesn't.
Here is where I found this info: Invalid PDO query does not return an error
Here is the bug: https://bugs.php.net/bug.php?id=61613
So, I tried doing this with mysqli and haven't really found any solid answer on how it works so I thought I's just leave it here for those who want to use it..
try{
// db connection
$mysqli = new mysqli("host", "user" , "password", "database");
if($mysqli->connect_errno){
throw new Exception("Connection Failed: [".$mysqli->connect_errno. "] : ".$mysqli->connect_error );
exit();
}
// read file.
// This file has multiple sql statements.
$file_sql = file_get_contents("filename.sql");
if($file_sql == "null" || empty($file_sql) || strlen($file_sql) <= 0){
throw new Exception("File is empty. I wont run it..");
}
//run the sql file contents through the mysqli's multi_query function.
// here is where it gets complicated...
// if the first query has errors, here is where you get it.
$sqlFileResult = $mysqli->multi_query($file_sql);
// this returns false only if there are errros on first sql statement, it doesn't care about the rest of the sql statements.
$sqlCount = 1;
if( $sqlFileResult == false ){
throw new Exception("File: '".$fullpath."' , Query#[".$sqlCount."], [".$mysqli->errno."]: '".$mysqli->error."' }");
}
// so handle the errors on the subsequent statements like this.
// while I have more results. This will start from the second sql statement. The first statement errors are thrown above on the $mysqli->multi_query("SQL"); line
while($mysqli->more_results()){
$sqlCount++;
// load the next result set into mysqli's active buffer. if this fails the $mysqli->error, $mysqli->errno will have appropriate error info.
if($mysqli->next_result() == false){
throw new Exception("File: '".$fullpath."' , Query#[".$sqlCount."], Error No: [".$mysqli->errno."]: '".$mysqli->error."' }");
}
}
}
catch(Exception $e){
echo $e->getMessage(). " <pre>".$e->getTraceAsString()."</pre>";
}
Write property value as a array of strings. Like example given over here https://gun.io/blog/multi-line-strings-in-json/. This will help.
We can always use array of strings for multiline strings like following.
{
"singleLine": "Some singleline String",
"multiline": ["Line one", "line Two", "Line Three"]
}
And we can easily iterate array to display content in multi line fashion.
My solution, as answered here, is to use:
var json = require('./data.json'); //with path
The file is loaded only once, further requests use cache.
edit To avoid caching, here's the helper function from this blogpost given in the comments, using the fs
module:
var readJson = (path, cb) => {
fs.readFile(require.resolve(path), (err, data) => {
if (err)
cb(err)
else
cb(null, JSON.parse(data))
})
}
Size of a pointer should be 8 byte on any 64-bit C/C++ compiler, but not necessarily size of int.
For this example, I have unchecked the Autolayout feature of the Interface builder. And, I'm still using (for no reason at all) the relatively old 4.6.1 version of Xcode.
Start with a view controller that has a scroll view over it (the main view).
1: Add a Container View, from the Object Library, to the scroll view. Notice that a new view controller is added to the storyboard and it is linked to the view controller with the scroll view.
2: Select the container view and, on the Size Inspector, make it anchor to top and left without auto resizing.
3: Change its height to 1000. (1000 is used for this example. You should apply the value that you require.)
4: Select the new view controller and, from the Attributes Inspector, change Size to Freeform.
5: Select the view of the new view controller and, on the size Inspector, change the height to 1000 (which is equal to the container view's height).
6: For your test later, while still on the view of the new view controller, add a label at the top and at the bottom of the view.
7: Select the scroll view from the original view controller. On the Identity inspector, add an attribute with the keyPath set to contentSize, type set to Size, and value set to {320, 1000} (or your container view's size).
8: Run on the 4-inch iPhone Simulator. You should be able to scroll from the top label up to the bottom label.
9: Run on the 3.5-inch iPhone Simulator. You should be able to scroll from the top label up to the bottom label.
Remember that Xcode 4.6.1 can only build for iOS6 and below. Using this approach and building for iOS6, I am still able to achieve the same results when the app is run on iOS7.
You could also do this which would include all JARs in the local repository. This way you wouldn't have to specify it every time.
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
}
You try with this string connection
Server=.\SQLExpress;AttachDbFilename=|DataDirectory|Database1.mdf;Database=dbname; Trusted_Connection=Yes;
In the view controller you are using:
//suppose you are using the textfield label as this
@IBOutlet weak var emailLabel: UITextField!
@IBOutlet weak var passwordLabel: UITextField!
//then your viewdidload should have the code like this
override func viewDidLoad() {
super.viewDidLoad()
self.emailLabel.delegate = self
self.passwordLabel.delegate = self
}
//then you should implement the func named textFieldShouldReturn
func textFieldShouldReturn(_ textField: UITextField) -> Bool {
textField.resignFirstResponder()
return true
}
// -- then, further if you want to close the keyboard when pressed somewhere else on the screen you can implement the following method too:
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
self.view.endEditing(true);
}
I had a similar requirement, and had to do it it basic CSS and JavaScript. No JQuery available.
This is what I got working.
<html>
<head>
<style>
img {
max-width: 95% !important;
max-height: 95% !important;
}
</style>
<script>
function FitImagesToScreen() {
var images = document.getElementsByTagName('img');
if(images.length > 0){
for(var i=0; i < images.length; i++){
if(images[i].width >= (window.innerWidth - 10)){
images[i].style.width = 'auto';
}
}
}
}
</script>
</head>
<body onload='FitImagesToScreen()'>
----
</body>
</html>
Note : I haven't used 100% for image width as there was always a bit of padding to be considered.
You cat try with below command
cat log|grep -e word1 -e word2
You could use this one debugVar()
instead of var_dump()
Check out: https://github.com/E1NSER/php-debug-function
Before looking at the difference between java.lang.RuntimeException
and java.lang.Exception
classes, you must know the Exception
hierarchy. Both Exception
and Error
classes are derived from class Throwable
(which derives from the class Object
). And the class RuntimeException
is derived from class Exception
.
All the exceptions are derived either from Exception
or RuntimeException
.
All the exceptions which derive from RuntimeException
are referred to as unchecked exceptions. And all the other exceptions are checked exceptions. A checked exception must be caught somewhere in your code, otherwise, it will not compile. That is why they are called checked exceptions. On the other hand, with unchecked exceptions, the calling method is under no obligation to handle or declare it.
Therefore all the exceptions which compiler forces you to handle are directly derived from java.lang.Exception
and all the other which compiler does not force you to handle are derived from java.lang.RuntimeException
.
Following are some of the direct known subclasses of RuntimeException.
AnnotationTypeMismatchException,
ArithmeticException,
ArrayStoreException,
BufferOverflowException,
BufferUnderflowException,
CannotRedoException,
CannotUndoException,
ClassCastException,
CMMException,
ConcurrentModificationException,
DataBindingException,
DOMException,
EmptyStackException,
EnumConstantNotPresentException,
EventException,
IllegalArgumentException,
IllegalMonitorStateException,
IllegalPathStateException,
IllegalStateException,
ImagingOpException,
IncompleteAnnotationException,
IndexOutOfBoundsException,
JMRuntimeException,
LSException,
MalformedParameterizedTypeException,
MirroredTypeException,
MirroredTypesException,
MissingResourceException,
NegativeArraySizeException,
NoSuchElementException,
NoSuchMechanismException,
NullPointerException,
ProfileDataException,
ProviderException,
RasterFormatException,
RejectedExecutionException,
SecurityException,
SystemException,
TypeConstraintException,
TypeNotPresentException,
UndeclaredThrowableException,
UnknownAnnotationValueException,
UnknownElementException,
UnknownTypeException,
UnmodifiableSetException,
UnsupportedOperationException,
WebServiceException
The original question concerns infinity. So, why not use
#define Infinity ((double)(42 / 0.0))
according to the IEEE definition? You can negate that of course.
A simple one would be
\d{4}-\d{2}-\d{2}
but this does not restrict month to 1-12 and days from 1 to 31.
There are more complex checks like in the other answers, by the way pretty clever ones. Nevertheless you have to check for a valid date, because there are no checks for if a month has 28, 30, or 31 days.
Although View.getVisibility() does get the visibility, its not a simple true/false. A view can have its visibility set to one of three things.
View.VISIBLE The view is visible.
View.INVISIBLE The view is invisible, but any spacing it would normally take up will still be used. Its "invisible"
View.GONE The view is gone, you can't see it and it doesn't take up the "spot".
So to answer your question, you're looking for:
if (myImageView.getVisibility() == View.VISIBLE) {
// Its visible
} else {
// Either gone or invisible
}
lastInsertId() only work after the INSERT query.
Correct:
$stmt = $this->conn->prepare("INSERT INTO users(userName,userEmail,userPass)
VALUES(?,?,?);");
$sonuc = $stmt->execute([$username,$email,$pass]);
$LAST_ID = $this->conn->lastInsertId();
Incorrect:
$stmt = $this->conn->prepare("SELECT * FROM users");
$sonuc = $stmt->execute();
$LAST_ID = $this->conn->lastInsertId(); //always return string(1)=0
In the other answers, only the list
approach results in O(1) appends, but it results in a deeply nested list structure, and not a plain single list. I have used the below datastructures, they supports O(1) (amortized) appends, and allow the result to be converted back to a plain list.
expandingList <- function(capacity = 10) {
buffer <- vector('list', capacity)
length <- 0
methods <- list()
methods$double.size <- function() {
buffer <<- c(buffer, vector('list', capacity))
capacity <<- capacity * 2
}
methods$add <- function(val) {
if(length == capacity) {
methods$double.size()
}
length <<- length + 1
buffer[[length]] <<- val
}
methods$as.list <- function() {
b <- buffer[0:length]
return(b)
}
methods
}
and
linkedList <- function() {
head <- list(0)
length <- 0
methods <- list()
methods$add <- function(val) {
length <<- length + 1
head <<- list(head, val)
}
methods$as.list <- function() {
b <- vector('list', length)
h <- head
for(i in length:1) {
b[[i]] <- head[[2]]
head <- head[[1]]
}
return(b)
}
methods
}
Use them as follows:
> l <- expandingList()
> l$add("hello")
> l$add("world")
> l$add(101)
> l$as.list()
[[1]]
[1] "hello"
[[2]]
[1] "world"
[[3]]
[1] 101
These solutions could be expanded into full objects that support al list-related operations by themselves, but that will remain as an exercise for the reader.
Another variant for a named list:
namedExpandingList <- function(capacity = 10) {
buffer <- vector('list', capacity)
names <- character(capacity)
length <- 0
methods <- list()
methods$double.size <- function() {
buffer <<- c(buffer, vector('list', capacity))
names <<- c(names, character(capacity))
capacity <<- capacity * 2
}
methods$add <- function(name, val) {
if(length == capacity) {
methods$double.size()
}
length <<- length + 1
buffer[[length]] <<- val
names[length] <<- name
}
methods$as.list <- function() {
b <- buffer[0:length]
names(b) <- names[0:length]
return(b)
}
methods
}
Benchmarks
Performance comparison using @phonetagger's code (which is based on @Cron Arconis' code). I have also added a better_env_as_container
and changed the env_as_container_
a bit. The original env_as_container_
was broken and doesn't actually store all the numbers.
library(microbenchmark)
lPtrAppend <- function(lstptr, lab, obj) {lstptr[[deparse(lab)]] <- obj}
### Store list inside new environment
envAppendList <- function(lstptr, obj) {lstptr$list[[length(lstptr$list)+1]] <- obj}
env2list <- function(env, len) {
l <- vector('list', len)
for (i in 1:len) {
l[[i]] <- env[[as.character(i)]]
}
l
}
envl2list <- function(env, len) {
l <- vector('list', len)
for (i in 1:len) {
l[[i]] <- env[[paste(as.character(i), 'L', sep='')]]
}
l
}
runBenchmark <- function(n) {
microbenchmark(times = 5,
env_with_list_ = {
listptr <- new.env(parent=globalenv())
listptr$list <- NULL
for(i in 1:n) {envAppendList(listptr, i)}
listptr$list
},
c_ = {
a <- list(0)
for(i in 1:n) {a = c(a, list(i))}
},
list_ = {
a <- list(0)
for(i in 1:n) {a <- list(a, list(i))}
},
by_index = {
a <- list(0)
for(i in 1:n) {a[length(a) + 1] <- i}
a
},
append_ = {
a <- list(0)
for(i in 1:n) {a <- append(a, i)}
a
},
env_as_container_ = {
listptr <- new.env(hash=TRUE, parent=globalenv())
for(i in 1:n) {lPtrAppend(listptr, i, i)}
envl2list(listptr, n)
},
better_env_as_container = {
env <- new.env(hash=TRUE, parent=globalenv())
for(i in 1:n) env[[as.character(i)]] <- i
env2list(env, n)
},
linkedList = {
a <- linkedList()
for(i in 1:n) { a$add(i) }
a$as.list()
},
inlineLinkedList = {
a <- list()
for(i in 1:n) { a <- list(a, i) }
b <- vector('list', n)
head <- a
for(i in n:1) {
b[[i]] <- head[[2]]
head <- head[[1]]
}
},
expandingList = {
a <- expandingList()
for(i in 1:n) { a$add(i) }
a$as.list()
},
inlineExpandingList = {
l <- vector('list', 10)
cap <- 10
len <- 0
for(i in 1:n) {
if(len == cap) {
l <- c(l, vector('list', cap))
cap <- cap*2
}
len <- len + 1
l[[len]] <- i
}
l[1:len]
}
)
}
# We need to repeatedly add an element to a list. With normal list concatenation
# or element setting this would lead to a large number of memory copies and a
# quadratic runtime. To prevent that, this function implements a bare bones
# expanding array, in which list appends are (amortized) constant time.
expandingList <- function(capacity = 10) {
buffer <- vector('list', capacity)
length <- 0
methods <- list()
methods$double.size <- function() {
buffer <<- c(buffer, vector('list', capacity))
capacity <<- capacity * 2
}
methods$add <- function(val) {
if(length == capacity) {
methods$double.size()
}
length <<- length + 1
buffer[[length]] <<- val
}
methods$as.list <- function() {
b <- buffer[0:length]
return(b)
}
methods
}
linkedList <- function() {
head <- list(0)
length <- 0
methods <- list()
methods$add <- function(val) {
length <<- length + 1
head <<- list(head, val)
}
methods$as.list <- function() {
b <- vector('list', length)
h <- head
for(i in length:1) {
b[[i]] <- head[[2]]
head <- head[[1]]
}
return(b)
}
methods
}
# We need to repeatedly add an element to a list. With normal list concatenation
# or element setting this would lead to a large number of memory copies and a
# quadratic runtime. To prevent that, this function implements a bare bones
# expanding array, in which list appends are (amortized) constant time.
namedExpandingList <- function(capacity = 10) {
buffer <- vector('list', capacity)
names <- character(capacity)
length <- 0
methods <- list()
methods$double.size <- function() {
buffer <<- c(buffer, vector('list', capacity))
names <<- c(names, character(capacity))
capacity <<- capacity * 2
}
methods$add <- function(name, val) {
if(length == capacity) {
methods$double.size()
}
length <<- length + 1
buffer[[length]] <<- val
names[length] <<- name
}
methods$as.list <- function() {
b <- buffer[0:length]
names(b) <- names[0:length]
return(b)
}
methods
}
result:
> runBenchmark(1000)
Unit: microseconds
expr min lq mean median uq max neval
env_with_list_ 3128.291 3161.675 4466.726 3361.837 3362.885 9318.943 5
c_ 3308.130 3465.830 6687.985 8578.913 8627.802 9459.252 5
list_ 329.508 343.615 389.724 370.504 449.494 455.499 5
by_index 3076.679 3256.588 5480.571 3395.919 8209.738 9463.931 5
append_ 4292.321 4562.184 7911.882 10156.957 10202.773 10345.177 5
env_as_container_ 24471.511 24795.849 25541.103 25486.362 26440.591 26511.200 5
better_env_as_container 7671.338 7986.597 8118.163 8153.726 8335.659 8443.493 5
linkedList 1700.754 1755.439 1829.442 1804.746 1898.752 1987.518 5
inlineLinkedList 1109.764 1115.352 1163.751 1115.631 1206.843 1271.166 5
expandingList 1422.440 1439.970 1486.288 1519.728 1524.268 1525.036 5
inlineExpandingList 942.916 973.366 1002.461 1012.197 1017.784 1066.044 5
> runBenchmark(10000)
Unit: milliseconds
expr min lq mean median uq max neval
env_with_list_ 357.760419 360.277117 433.810432 411.144799 479.090688 560.779139 5
c_ 685.477809 734.055635 761.689936 745.957553 778.330873 864.627811 5
list_ 3.257356 3.454166 3.505653 3.524216 3.551454 3.741071 5
by_index 445.977967 454.321797 515.453906 483.313516 560.374763 633.281485 5
append_ 610.777866 629.547539 681.145751 640.936898 760.570326 763.896124 5
env_as_container_ 281.025606 290.028380 303.885130 308.594676 314.972570 324.804419 5
better_env_as_container 83.944855 86.927458 90.098644 91.335853 92.459026 95.826030 5
linkedList 19.612576 24.032285 24.229808 25.461429 25.819151 26.223597 5
inlineLinkedList 11.126970 11.768524 12.216284 12.063529 12.392199 13.730200 5
expandingList 14.735483 15.854536 15.764204 16.073485 16.075789 16.081726 5
inlineExpandingList 10.618393 11.179351 13.275107 12.391780 14.747914 17.438096 5
> runBenchmark(20000)
Unit: milliseconds
expr min lq mean median uq max neval
env_with_list_ 1723.899913 1915.003237 1921.23955 1938.734718 1951.649113 2076.910767 5
c_ 2759.769353 2768.992334 2810.40023 2820.129738 2832.350269 2870.759474 5
list_ 6.112919 6.399964 6.63974 6.453252 6.910916 7.321647 5
by_index 2163.585192 2194.892470 2292.61011 2209.889015 2436.620081 2458.063801 5
append_ 2832.504964 2872.559609 2983.17666 2992.634568 3004.625953 3213.558197 5
env_as_container_ 573.386166 588.448990 602.48829 597.645221 610.048314 642.912752 5
better_env_as_container 154.180531 175.254307 180.26689 177.027204 188.642219 206.230191 5
linkedList 38.401105 47.514506 46.61419 47.525192 48.677209 50.952958 5
inlineLinkedList 25.172429 26.326681 32.33312 34.403442 34.469930 41.293126 5
expandingList 30.776072 30.970438 34.45491 31.752790 38.062728 40.712542 5
inlineExpandingList 21.309278 22.709159 24.64656 24.290694 25.764816 29.158849 5
I have added linkedList
and expandingList
and an inlined version of both. The inlinedLinkedList
is basically a copy of list_
, but it also converts the nested structure back into a plain list. Beyond that the difference between the inlined and non-inlined versions is due to the overhead of the function calls.
All variants of expandingList
and linkedList
show O(1) append performance, with the benchmark time scaling linearly with the number of items appended. linkedList
is slower than expandingList
, and the function call overhead is also visible. So if you really need all the speed you can get (and want to stick to R code), use an inlined version of expandingList
.
I've also had a look at the C implementation of R, and both approaches should be O(1) append for any size up until you run out of memory.
I have also changed env_as_container_
, the original version would store every item under index "i", overwriting the previously appended item. The better_env_as_container
I have added is very similar to env_as_container_
but without the deparse
stuff. Both exhibit O(1) performance, but they have an overhead that is quite a bit larger than the linked/expanding lists.
Memory overhead
In the C R implementation there is an overhead of 4 words and 2 ints per allocated object. The linkedList
approach allocates one list of length two per append, for a total of (4*8+4+4+2*8=) 56 bytes per appended item on 64-bit computers (excluding memory allocation overhead, so probably closer to 64 bytes). The expandingList
approach uses one word per appended item, plus a copy when doubling the vector length, so a total memory usage of up to 16 bytes per item. Since the memory is all in one or two objects the per-object overhead is insignificant. I haven't looked deeply into the env
memory usage, but I think it will be closer to linkedList
.
Or you can just use the <center></center>
tags.
Avoid using bind_address
in your my.cnf file, if you have any.
Ref: http://dev.mysql.com/doc/refman/5.5/en/can-not-connect-to-server.html
var1
is a regular string, whereas var2
is an array, this is how you should compare (in this case):
puts var1 == var2[0]
I'm going to add to the answer given before.
It's not a bug in your code or the browser's code. It's the JavaScript code inside the YouTube iframe polls for the extensions it could interoperate with in case they were installed (likely to determine if the extension is installed).
Look at the source of www-embed-player.js
(loaded from s.ytimg.com
, it's YouTube static files CDN).
You'll find the following:
function Wj(a){return"chrome-extension://"+a+"/cast_sender.js"}
I'm not totally satisfied with the other answers given. They've all got some kind of flaw to them.
Using keyPress
with event.which
is unreliable because you can't catch a backspace or a delete (as mentioned by Tarl).
Using keyDown
(as in Niva's and Tarl's answers) is a bit better, but the solution is flawed because it attempts to use event.keyCode
with String.fromCharCode()
(keyCode and charCode are not the same!).
However, what we DO have with the keydown
or keyup
event is the actual key that was pressed (event.key
).
As far as I can tell, any key
with a length of 1 is a character (number or letter) regardless of which language keyboard you're using. Please correct me if that's not true!
Then there's that very long answer from asdf. That might work perfectly, but it seems like overkill.
So here's a simple solution that will catch all characters, backspace, and delete. (Note: either keyup
or keydown
will work here, but keypress
will not)
$("input").keydown(function(event) {
var isWordCharacter = event.key.length === 1;
var isBackspaceOrDelete = event.keyCode === 8 || event.keyCode === 46;
if (isWordCharacter || isBackspaceOrDelete) {
// do something
}
});
The simple answer for this one is that you have an undeclared (null) variable. In this case it is $md5
. From the comment you put this needed to be declared elsewhere in your code
$md5 = new-object -TypeName System.Security.Cryptography.MD5CryptoServiceProvider
The error was because you are trying to execute a method that does not exist.
PS C:\Users\Matt> $md5 | gm
TypeName: System.Security.Cryptography.MD5CryptoServiceProvider
Name MemberType Definition
---- ---------- ----------
Clear Method void Clear()
ComputeHash Method byte[] ComputeHash(System.IO.Stream inputStream), byte[] ComputeHash(byte[] buffer), byte[] ComputeHash(byte[] buffer, int offset, ...
The .ComputeHash()
of $md5.ComputeHash()
was the null valued expression. Typing in gibberish would create the same effect.
PS C:\Users\Matt> $bagel.MakeMeABagel()
You cannot call a method on a null-valued expression.
At line:1 char:1
+ $bagel.MakeMeABagel()
+ ~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidOperation: (:) [], RuntimeException
+ FullyQualifiedErrorId : InvokeMethodOnNull
PowerShell by default allows this to happen as defined its StrictMode
When Set-StrictMode is off, uninitialized variables (Version 1) are assumed to have a value of 0 (zero) or $Null, depending on type. References to non-existent properties return $Null, and the results of function syntax that is not valid vary with the error. Unnamed variables are not permitted.
I have such a method in my application, but it does not use jQuery:
/* Get the TOP position of a given element. */
function getPositionTop(element){
var offset = 0;
while(element) {
offset += element["offsetTop"];
element = element.offsetParent;
}
return offset;
}
/* Is a given element is visible or not? */
function isElementVisible(eltId) {
var elt = document.getElementById(eltId);
if (!elt) {
// Element not found.
return false;
}
// Get the top and bottom position of the given element.
var posTop = getPositionTop(elt);
var posBottom = posTop + elt.offsetHeight;
// Get the top and bottom position of the *visible* part of the window.
var visibleTop = document.body.scrollTop;
var visibleBottom = visibleTop + document.documentElement.offsetHeight;
return ((posBottom >= visibleTop) && (posTop <= visibleBottom));
}
Edit : This method works well for I.E. (at least version 6). Read the comments for compatibility with FF.
You need to close all your connexions for example: If you make an INSERT INTO statement you need to close the statement and your connexion in this way:
statement.close();
Connexion.close():
And if you make a SELECT statement you need to close the statement, the connexion and the resultset in this way:
resultset.close();
statement.close();
Connexion.close();
I did this and it worked
I just wanted to add that "Include" is part of eager loading. It is described in Entity Framework 6 tutorial by Microsoft. Here is the link: https://docs.microsoft.com/en-us/aspnet/mvc/overview/getting-started/getting-started-with-ef-using-mvc/reading-related-data-with-the-entity-framework-in-an-asp-net-mvc-application
Excerpt from the linked page:
Here are several ways that the Entity Framework can load related data into the navigation properties of an entity:
Lazy loading. When the entity is first read, related data isn't retrieved. However, the first time you attempt to access a navigation property, the data required for that navigation property is automatically retrieved. This results in multiple queries sent to the database — one for the entity itself and one each time that related data for the entity must be retrieved. The DbContext class enables lazy loading by default.
Eager loading. When the entity is read, related data is retrieved along with it. This typically results in a single join query that retrieves all of the data that's needed. You specify eager loading by using the
Include
method.Explicit loading. This is similar to lazy loading, except that you explicitly retrieve the related data in code; it doesn't happen automatically when you access a navigation property. You load related data manually by getting the object state manager entry for an entity and calling the Collection.Load method for collections or the Reference.Load method for properties that hold a single entity. (In the following example, if you wanted to load the Administrator navigation property, you'd replace
Collection(x => x.Courses)
withReference(x => x.Administrator)
.) Typically you'd use explicit loading only when you've turned lazy loading off.Because they don't immediately retrieve the property values, lazy loading and explicit loading are also both known as deferred loading.
From wikipedia:
A Postback is an action taken by an interactive webpage, when the entire page and its contents are sent to the server for processing some information and then, the server posts the same page back to the browser.
Putting plot.tight_layout()
after all changes on the graph, just before show()
or savefig()
will solve the problem.
Visual Mode
As several other people have said, visual mode is the answer to your copy/cut & paste problem. Vim gives you 'v', 'V', and C-v. Lower case 'v' in vim is essentially the same as the shift key in notepad. The nice thing is that you don't have to hold it down. You can use any movement technique to navigate efficiently to the starting (or ending) point of your selection. Then hit 'v', and use efficient movement techniques again to navigate to the other end of your selection. Then 'd' or 'y' allows you to cut or copy that selection.
The advantage vim's visual mode has over Jim Dennis's description of cut/copy/paste in vi is that you don't have to get the location exactly right. Sometimes it's more efficient to use a quick movement to get to the general vicinity of where you want to go and then refine that with other movements than to think up a more complex single movement command that gets you exactly where you want to go.
The downside to using visual mode extensively in this manner is that it can become a crutch that you use all the time which prevents you from learning new vi(m) commands that might allow you to do things more efficiently. However, if you are very proactive about learning new aspects of vi(m), then this probably won't affect you much.
I'll also re-emphasize that the visual line and visual block modes give you variations on this same theme that can be very powerful...especially the visual block mode.
On Efficient Use of the Keyboard
I also disagree with your assertion that alternating hands is the fastest way to use the keyboard. It has an element of truth in it. Speaking very generally, repeated use of the same thing is slow. This most significant example of this principle is that consecutive keystrokes typed with the same finger are very slow. Your assertion probably stems from the natural tendency to use the s/finger/hand/ transformation on this pattern. To some extent it's correct, but at the extremely high end of the efficiency spectrum it's incorrect.
Just ask any pianist. Ask them whether it's faster to play a succession of a few notes alternating hands or using consecutive fingers of a single hand in sequence. The fastest way to type 4 keystrokes is not to alternate hands, but to type them with 4 fingers of the same hand in either ascending or descending order (call this a "run"). This should be self-evident once you've considered this possibility.
The more difficult problem is optimizing for this. It's pretty easy to optimize for absolute distance on the keyboard. Vim does that. It's much harder to optimize at the "run" level, but vi(m) with it's modal editing gives you a better chance at being able to do it than any non-modal approach (ahem, emacs) ever could.
On Emacs
Lest the emacs zealots completely disregard my whole post on account of that last parenthetical comment, I feel I must describe the root of the difference between the emacs and vim religions. I've never spoken up in the editor wars and I probably won't do it again, but I've never heard anyone describe the differences this way, so here it goes. The difference is the following tradeoff:
Vim gives you unmatched raw text editing efficiency Emacs gives you unmatched ability to customize and program the editor
The blind vim zealots will claim that vim has a scripting language. But it's an obscure, ad-hoc language that was designed to serve the editor. Emacs has Lisp! Enough said. If you don't appreciate the significance of those last two sentences or have a desire to learn enough about functional programming and Lisp to develop that appreciation, then you should use vim.
The emacs zealots will claim that emacs has viper mode, and so it is a superset of vim. But viper mode isn't standard. My understanding is that viper mode is not used by the majority of emacs users. Since it's not the default, most emacs users probably don't develop a true appreciation for the benefits of the modal paradigm.
In my opinion these differences are orthogonal. I believe the benefits of vim and emacs as I have stated them are both valid. This means that the ultimate editor doesn't exist yet. It's probably true that emacs would be the easiest platform on which to base the ultimate editor. But modal editing is not entrenched in the emacs mindset. The emacs community could move that way in the future, but that doesn't seem very likely.
So if you want raw editing efficiency, use vim. If you want the ultimate environment for scripting and programming your editor use emacs. If you want some of both with an emphasis on programmability, use emacs with viper mode (or program your own mode). If you want the best of both worlds, you're out of luck for now.
This topic, especially the answer of Xotic750 was very helpful to me. I wanted to generate a json variable to pass it to a php script using ajax. My values were stored into two arrays, and i wanted them in json format. This is a generic example:
valArray1 = [121, 324, 42, 31];
valArray2 = [232, 131, 443];
myJson = {objArray1: {}, objArray2: {}};
for (var k = 1; k < valArray1.length; k++) {
var objName = 'obj' + k;
var objValue = valArray1[k];
myJson.objArray1[objName] = objValue;
}
for (var k = 1; k < valArray2.length; k++) {
var objName = 'obj' + k;
var objValue = valArray2[k];
myJson.objArray2[objName] = objValue;
}
console.log(JSON.stringify(myJson));
The result in the console Log should be something like this:
{
"objArray1": {
"obj1": 121,
"obj2": 324,
"obj3": 42,
"obj4": 31
},
"objArray2": {
"obj1": 232,
"obj2": 131,
"obj3": 443
}
}
Here is a way to handle duplicate tuple "keys":
# An example
l = [('A', 1), ('B', 2), ('C', 3), ('A', 5), ('D', 0), ('D', 9)]
# A solution
d = dict()
[d [t [0]].append(t [1]) if t [0] in list(d.keys())
else d.update({t [0]: [t [1]]}) for t in l]
d
OUTPUT: {'A': [1, 5], 'B': [2], 'C': [3], 'D': [0, 9]}
This takes advantage of DOMContentLoaded - which fires before onload - but allows you to stick in all your unobtrusiveness...
window.onload - Dean Edwards - The blog post talks more about it - and here is the complete code copied from the comments of that same blog.
// Dean Edwards/Matthias Miller/John Resig
function init() {
// quit if this function has already been called
if (arguments.callee.done) return;
// flag this function so we don't do the same thing twice
arguments.callee.done = true;
// kill the timer
if (_timer) clearInterval(_timer);
// do stuff
};
/* for Mozilla/Opera9 */
if (document.addEventListener) {
document.addEventListener("DOMContentLoaded", init, false);
}
/* for Internet Explorer */
/*@cc_on @*/
/*@if (@_win32)
document.write("<script id=__ie_onload defer src=javascript:void(0)><\/script>");
var script = document.getElementById("__ie_onload");
script.onreadystatechange = function() {
if (this.readyState == "complete") {
init(); // call the onload handler
}
};
/*@end @*/
/* for Safari */
if (/WebKit/i.test(navigator.userAgent)) { // sniff
var _timer = setInterval(function() {
if (/loaded|complete/.test(document.readyState)) {
init(); // call the onload handler
}
}, 10);
}
/* for other browsers */
window.onload = init;
Not really, in the standard. Some implementations have a nonstandard itoa() function, and you could look up Boost's lexical_cast, but if you stick to the standard it's pretty much a choice between stringstream and sprintf() (snprintf() if you've got it).
Try this method to convert a 'string that could potentially contain html code' to 'text format':
$msg = "<div></div>";
$safe_msg = htmlspecialchars($msg, ENT_QUOTES);
echo $safe_msg;
Hope this helps!
envsubst
seems exactly like something I wanted to use, but -v
option surprised me a bit.
While envsubst < template.txt
was working fine, the same with option -v
was not working:
$ cat /etc/redhat-release
Red Hat Enterprise Linux Server release 7.1 (Maipo)
$ envsubst -V
envsubst (GNU gettext-runtime) 0.18.2
Copyright (C) 2003-2007 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Written by Bruno Haible.
As I wrote, this was not working:
$ envsubst -v < template.txt
envsubst: missing arguments
$ cat template.txt | envsubst -v
envsubst: missing arguments
I had to do this to make it work:
TEXT=`cat template.txt`; envsubst -v "$TEXT"
Maybe it helps someone.
Because you're not specifying a precision and a rounding-mode. BigDecimal is complaining that it could use 10, 20, 5000, or infinity decimal places, and it still wouldn't be able to give you an exact representation of the number. So instead of giving you an incorrect BigDecimal, it just whinges at you.
However, if you supply a RoundingMode and a precision, then it will be able to convert (eg. 1.333333333-to-infinity to something like 1.3333 ... but you as the programmer need to tell it what precision you're 'happy with'.
You may do it simply using python comprehension.
arr = [
['a', 'b', 'c'],
['d', 'e', 'f'],
['g', 'h', 'i']
]
transpose = [[arr[y][x] for y in range(len(arr))] for x in range(len(arr[0]))]
here's a way using the SSSE3 instruction pshufb using its Intel intrinsic, assuming you have a multiple of 4 int
s:
unsigned int *bswap(unsigned int *destination, unsigned int *source, int length) {
int i;
__m128i mask = _mm_set_epi8(12, 13, 14, 15, 8, 9, 10, 11, 4, 5, 6, 7, 0, 1, 2, 3);
for (i = 0; i < length; i += 4) {
_mm_storeu_si128((__m128i *)&destination[i],
_mm_shuffle_epi8(_mm_loadu_si128((__m128i *)&source[i]), mask));
}
return destination;
}
Looks like the path you gave doesn't have any bootstrap files in them.
href="~/lib/bootstrap/dist/css/bootstrap.min.css"
Make sure the files exist over there , else point the files to the correct path, which should be in your case
href="~/node_modules/bootstrap/dist/css/bootstrap.min.css"
neither of the other answers helped me case: downgrading python from 3.6 to 3.5 for using pyinstaller package.
here is the solution for this specific case:
may probably work for you as well.
i think this may help. Below Macro checks if folder exists, if does not then create the folder and save in both xls and pdf formats in such folder. It happens that the folder is shared with the involved people so everybody is updated.
Sub PDF_laudo_e_Prod_SP_Sem_Ajuste_Preco()
'
' PDF_laudo_e_Prod_SP_Sem_Ajuste_Preco Macro
'
'
Dim MyFolder As String
Dim LaudoName As String
Dim NF1Name As String
Dim OrigFolder As String
MyFolder = ThisWorkbook.path & "\" & Sheets("Laudo").Range("C9")
LaudoName = Sheets("Laudo").Range("K27")
NF1Name = Sheets("PROD SP sem ajuste").Range("Q3")
OrigFolder = ThisWorkbook.path
Sheets("Laudo").Select
Columns("D:P").Select
Selection.EntireColumn.Hidden = True
If Dir(MyFolder, vbDirectory) <> "" Then
Sheets("Laudo").ExportAsFixedFormat Type:=xlTypePDF, filename:=MyFolder & "\" & LaudoName & ".pdf", Quality:=xlQualityMinimum, _
IncludeDocProperties:=True, IgnorePrintAreas:=False, OpenAfterPublish:= _
False
Sheets("PROD SP sem ajuste").ExportAsFixedFormat Type:=xlTypePDF, filename:=MyFolder & "\" & NF1Name & ".pdf", Quality:=xlQualityMinimum, _
IncludeDocProperties:=True, IgnorePrintAreas:=False, OpenAfterPublish:= _
False
ThisWorkbook.SaveAs filename:=MyFolder & "\" & LaudoName
Application.DisplayAlerts = False
ThisWorkbook.SaveAs filename:=OrigFolder & "\" & "Entregas e Instrucao Barter 2015 - beta"
Application.DisplayAlerts = True
Else
MkDir MyFolder
Sheets("Laudo").ExportAsFixedFormat Type:=xlTypePDF, filename:=MyFolder & "\" & LaudoName & ".pdf", Quality:=xlQualityMinimum, _
IncludeDocProperties:=True, IgnorePrintAreas:=False, OpenAfterPublish:= _
False
Sheets("PROD SP sem ajuste").ExportAsFixedFormat Type:=xlTypePDF, filename:=MyFolder & "\" & NF1Name & ".pdf", Quality:=xlQualityMinimum, _
IncludeDocProperties:=True, IgnorePrintAreas:=False, OpenAfterPublish:= _
False
ThisWorkbook.SaveAs filename:=MyFolder & "\" & LaudoName
Application.DisplayAlerts = False
ThisWorkbook.SaveAs filename:=OrigFolder & "\" & "Entregas e Instrucao Barter 2015 - beta"
Application.DisplayAlerts = True
End If
Sheets("Laudo").Select
Columns("C:Q").Select
Selection.EntireColumn.Hidden = False
Range("A1").Select
End Sub
This is not like Collections.sort()
where the parameter reference gets sorted. In this case you just get a sorted stream that you need to collect and assign to another variable eventually:
List result = list.stream().sorted((o1, o2)->o1.getItem().getValue().
compareTo(o2.getItem().getValue())).
collect(Collectors.toList());
You've just missed to assign the result
Here's a complete solution for Swagger with Spring Security. We probably want to only enable Swagger in our development and QA environment and disable it in the production environment. So, I am using a property (prop.swagger.enabled
) as a flag to bypass spring security authentication for swagger-ui only in development/qa environment.
@Configuration
@EnableSwagger2
public class SwaggerConfiguration extends WebSecurityConfigurerAdapter implements WebMvcConfigurer {
@Value("${prop.swagger.enabled:false}")
private boolean enableSwagger;
@Bean
public Docket SwaggerConfig() {
return new Docket(DocumentationType.SWAGGER_2)
.enable(enableSwagger)
.select()
.apis(RequestHandlerSelectors.basePackage("com.your.controller"))
.paths(PathSelectors.any())
.build();
}
@Override
public void configure(WebSecurity web) throws Exception {
if (enableSwagger)
web.ignoring().antMatchers("/v2/api-docs",
"/configuration/ui",
"/swagger-resources/**",
"/configuration/security",
"/swagger-ui.html",
"/webjars/**");
}
@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
if (enableSwagger) {
registry.addResourceHandler("swagger-ui.html").addResourceLocations("classpath:/META-INF/resources/");
registry.addResourceHandler("/webjars/**").addResourceLocations("classpath:/META-INF/resources/webjars/");
}
}
}
You can trigger this event to show all of the options:
$("#example").autocomplete( "search", "" );
Or see the example in the link below. Looks like exactly what you want to do.
http://jqueryui.com/demos/autocomplete/#combobox
EDIT (from @cnanney)
Note: You must set minLength: 0 in your autocomplete for an empty search string to return all elements.
You can apply the style via javascript. This is the Js code below that applies the filter to the image with the ID theImage.
function invert(){
document.getElementById("theImage").style.filter="invert(100%)";
}
And this is the
<img id="theImage" class="img-responsive" src="http://i.imgur.com/1H91A5Y.png"></img>
Now all you need to do is call invert() We do this when the image is clicked.
function invert(){_x000D_
document.getElementById("theImage").style.filter="invert(100%)";_x000D_
}
_x000D_
<h4> Click image to invert </h4>_x000D_
_x000D_
<img id="theImage" class="img-responsive" src="http://i.imgur.com/1H91A5Y.png" onClick="invert()" ></img>
_x000D_
We use this on our website
You need a mechanism which avoids busy-waiting. The old wait/notify
mechanism is fraught with pitfalls so prefer something from the java.util.concurrent
library, for example the CountDownLatch
:
public final CountDownLatch latch = new CountDownLatch(1);
public void run () {
latch.await();
...
}
And at the other side call
yourRunnableObj.latch.countDown();
However, starting a thread to do nothing but wait until it is needed is still not the best way to go. You could also employ an ExecutorService
to which you submit as a task the work which must be done when the condition is met.
For those who want to set a computed or dynamic property on the window
object, you'll find that not possible with the declare global
method. To clarify for this use case
window[DynamicObject.key] // Element implicitly has an 'any' type because type Window has no index signature
You might attempt to do something like this
declare global {
interface Window {
[DyanmicObject.key]: string; // error RIP
}
}
The above will error though. This is because in Typescript, interfaces do not play well with computed properties and will throw an error like
A computed property name in an interface must directly refer to a built-in symbol
To get around this, you can go with the suggest of casting window
to <any>
so you can do
(window as any)[DynamicObject.key]
Many solutions have been given, and the internals are briefly touched by @Sriram and @ptomli as well. I just want to add a few references to the source code to help understand what is happening under the hood.
By default (i.e. no extra annotations used at all except @XmlRootElement
on the root class), JABX tries to marshal things exposed via two ways:
Notice that if a field is (or method returns) null
, it will not be written into the output.
Now if @XmlElement
is used, non-public things (could be fields or getter methods) can be marshalled as well.
But the two ways, i.e. fields and getter-methods, must not conflict with each other. Otherwise you get the exception.
It is 20 Minutes according to MSDN
From MSDN:
Optional TimeSpan attribute.
Specifies the number of minutes a session can be idle before it is abandoned. The timeout attribute cannot be set to a value that is greater than 525,601 minutes (1 year) for the in-process and state-server modes. The session timeout configuration setting applies only to ASP.NET pages. Changing the session timeout value does not affect the session time-out for ASP pages. Similarly, changing the session time-out for ASP pages does not affect the session time-out for ASP.NET pages. The default is 20 minutes.
So I'm a pretty critical person, and figure if I'm going to invest in a library, I'd better know what I'm getting myself into. I figure it's better to go heavy on the criticism and light on the flattery when scrutinizing; what's wrong with it has many more implications for the future than what's right. So I'm going to go overboard here a little bit to provide the kind of answer that would have helped me and I hope will help others who may journey down this path. Keep in mind that this is based on what little reviewing/testing I've done with these libs. Oh and I stole some of the positive description from Reed.
I'll mention up top that I went with GMTL despite it's idiosyncrasies because the Eigen2 unsafeness was too big of a downside. But I've recently learned that the next release of Eigen2 will contain defines that will shut off the alignment code, and make it safe. So I may switch over.
Update: I've switched to Eigen3. Despite it's idiosyncrasies, its scope and elegance are too hard to ignore, and the optimizations which make it unsafe can be turned off with a define.
Benefits: LGPL MPL2, Clean, well designed API, fairly easy to use. Seems to be well maintained with a vibrant community. Low memory overhead. High performance. Made for general linear algebra, but good geometric functionality available as well. All header lib, no linking required.
Idiocyncracies/downsides: (Some/all of these can be avoided by some defines that are available in the current development branch Eigen3)
Benefits: LGPL, Fairly Simple API, specifically designed for graphics engines. Includes many primitive types geared towards rendering (such as planes, AABB, quatenrions with multiple interpolation, etc) that aren't in any other packages. Very low memory overhead, quite fast, easy to use. All header based, no linking necessary.
Idiocyncracies/downsides:
vec1 - vec2
does not return a
normal vector so length( vecA - vecB )
fails even though vecC = vecA -
vecB
works. You must wrap like: length( Vec( vecA - vecB ) )
length( makeCross( vecA, vecB ) )
gmtl::length( gmtl::makeCross( vecA, vecB ) )
vecA.cross( vecB ).length()
Can't tell because they seem to be more interested in the fractal image header of their web page than the content. Looks more like an academic project than a serious software project.
Latest release over 2 years ago.
Apparently no documentation in English though supposedly there is something in French somewhere.
Cant find a trace of a community around the project.
Benefits: Old and mature.
Downsides:
For what it's worth, when I did this I found that no folder should be include in the path in the css file. For instance if I have app/assets/images/example.png
, and I put this in my css file...
div.example { background: url('example.png'); }
... then somehow it magically works. I figured this out by running the rake assets:precompile
task, which just sucks everything out of all your load paths and dumps it in a junk drawer folder: public/assets
. That's ironic, IMO...
In any case this means you don't need to put any folder paths, everything in your assets folders will all end up living in one huge directory. How this system resolves file name conflicts is unclear, you may need to be careful about that.
Kind of frustrating there aren't better docs out there for this big of a change.
Simple solution
setcookie("NAME", "VALUE", time()+3600, '/', EXAMPLE.COM);
Setcookie's 5th parameter determines the (sub)domains that the cookie is available to. Setting it to (EXAMPLE.COM) makes it available to any subdomain (eg: SUBDOMAIN.EXAMPLE.COM )
sqlplus -s /nolog <<EOF
whenever sqlerror exit sql.sqlcode;
set echo on;
set serveroutput on;
connect <SCHEMA>/<PASS>@<HOST>:<PORT>/<SID>;
truncate table tmp;
exit;
EOF
Being form
a block element, you can center-align it by setting its side margins to auto:
form { margin: 0 auto; }
EDIT:
As @moomoochoo correctly pointed out, this rule will only work if the block element (your form, in this case) has been assigned a specific width.
Also, this 'trick' will not work for floating elements.
I had the same problem, then I did this two steps:
While you are declaring onclick in XML then you must declair method and pass View v as parameter and make the method public...
Ex:
//in xml
android:onClick="onButtonClicked"
// in java file
public void onButtonClicked(View v)
{
//your code here
}
Something along the lines:
<VirtualHost hostname:80>
...
SetEnv VARIABLE_NAME variable_value
...
</VirtualHost>
If t
is a matrix, you need to use the element-wise multiplication or exponentiation. Note the dot.
x = exp( -t.^2 )
or
x = exp( -t.*t )
back to 2017:
use URL.createObjectURL( file ) to create local link to file system that user select;
don't forgot to free memory by using URL.revokeObjectURL()
<Grid >
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Button Command="{Binding ClickCommand}" Width="100" Height="100" Content="wefwfwef"/>
</Grid>
the code behind for the window:
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
DataContext = new ViewModelBase();
}
}
The ViewModel:
public class ViewModelBase
{
private ICommand _clickCommand;
public ICommand ClickCommand
{
get
{
return _clickCommand ?? (_clickCommand = new CommandHandler(() => MyAction(), ()=> CanExecute));
}
}
public bool CanExecute
{
get
{
// check if executing is allowed, i.e., validate, check if a process is running, etc.
return true/false;
}
}
public void MyAction()
{
}
}
Command Handler:
public class CommandHandler : ICommand
{
private Action _action;
private Func<bool> _canExecute;
/// <summary>
/// Creates instance of the command handler
/// </summary>
/// <param name="action">Action to be executed by the command</param>
/// <param name="canExecute">A bolean property to containing current permissions to execute the command</param>
public CommandHandler(Action action, Func<bool> canExecute)
{
_action = action;
_canExecute = canExecute;
}
/// <summary>
/// Wires CanExecuteChanged event
/// </summary>
public event EventHandler CanExecuteChanged
{
add { CommandManager.RequerySuggested += value; }
remove { CommandManager.RequerySuggested -= value; }
}
/// <summary>
/// Forcess checking if execute is allowed
/// </summary>
/// <param name="parameter"></param>
/// <returns></returns>
public bool CanExecute(object parameter)
{
return _canExecute.Invoke();
}
public void Execute(object parameter)
{
_action();
}
}
I hope this will give you the idea.
In recent version, The following works fine:
$('.selector').datetimepicker({
maxDate: new Date()
});
maxDate
accepts a Date object as parameter.
The following found in documentation:
Multiple types supported:
Date: A date object containing the minimum date.
Number: A number of days from today. For example 2 represents two days from today and -1 represents yesterday.
String: A string in the format defined by the dateFormat option, or a relative date. Relative dates must contain value and period pairs; valid periods are "y" for years, "m" for months, "w" for weeks, and "d" for days. For example, "+1m +7d" represents one month and seven days from today.
Check out
bucket.get_key(
key_name,
headers=None,
version_id=None,
response_headers=None,
validate=True
)
Check to see if a particular key exists within the bucket. This method uses a HEAD request to check for the existence of the key. Returns: An instance of a Key object or None
from Boto S3 Docs
You can just call bucket.get_key(keyname) and check if the returned object is None.
putting the UNIX_TIMESTAMP will do the trick.
SELECT id, NAME, form_id, UNIX_TIMESTAMP(updated_at) AS DATE
FROM wp_frm_items
WHERE user_id = 11 && form_id=9
ORDER BY DATE DESC
Here's a comprehensive yet non-exhaustive list of examples of list
operations and whether or not they are thread safe.
Hoping to get an answer regarding the obj in a_list
language construct here.
I can't add a comment above as I do not have enough reputation, but the above answer was nearly perfect for me, except I had to add
type: "POST"
to the .ajax call. I was scratching my head for a few minutes trying to figure out what I had done wrong, that's all it needed and works a treat. So this is the whole snippet:
Full credit to the answer above me, this is just a small tweak to that. This is just in case anyone else gets stuck and can't see the obvious.
$.ajax({
url: 'Your url here',
data: formData,
type: "POST", //ADDED THIS LINE
// THIS MUST BE DONE FOR FILE UPLOADING
contentType: false,
processData: false,
// ... Other options like success and etc
})