I know I'm super late regarding this topic but there's this easy to use library where you can easily get the version numbers of Worpress, PHP, Apache, and MySQL, all-in-one.
It is called the Wordpress Environment (W18T) library
<?php
include_once 'W18T.class.php';
$environment = new W18T();
echo $environment;
?>
Output
{
"platform": {
"name": "WordPress",
"version": "4.9.1"
},
"interpreter": {
"name": "PHP",
"version": "7.2.0"
},
"web_server": {
"name": "Apache",
"version": "2.4.16"
},
"database_server": {
"name": "MySQL",
"version": "5.7.20"
},
"operating_system": {
"name": "Darwin",
"version": "17.0.0"
}
}
I hope it helps.
var targetNode = document.getElementById('elementId');
var observer = new MutationObserver(function(){
if(targetNode.style.display != 'none'){
// doSomething
}
});
observer.observe(targetNode, { attributes: true, childList: true });
I might be a little late, but you could just use the MutationObserver to observe any changes on the desired element. If any change occurs, you'll just have to check if the element is displayed.
This commands shows the created date of branch dev
from main
$git reflog show --date=iso dev
$7a2b33d dev@{2012-11-23 13:20:28 -2100}: branch: Created from main
Here's a nice fun LINQ example.
public static byte[] StringToByteArray(string hex) {
return Enumerable.Range(0, hex.Length)
.Where(x => x % 2 == 0)
.Select(x => Convert.ToByte(hex.Substring(x, 2), 16))
.ToArray();
}
You could do this on the ASPX HTML front end to make the button go to a new tab to show page in your ASP.NET site dynamically:
<asp:Button ID="btnNewEntry" CssClass="button" OnClientClick="window.open('https://website','_blank'); return false;" text="WebsiteName" runat="server" />
There are two ways of on how to achieve that according to Apple Developer Documentation
NSLayoutConstraint.deactivateConstraints
This is a convenience method that provides an easy way to deactivate a set of constraints with one call. The effect of this method is the same as setting the isActive property of each constraint to false. Typically, using this method is more efficient than deactivating each constraint individually.
// Declaration
class func deactivate(_ constraints: [NSLayoutConstraint])
// Usage
NSLayoutConstraint.deactivate(yourView.constraints)
UIView.removeConstraints
(Deprecated for >= iOS 8.0)When developing for iOS 8.0 or later, use the NSLayoutConstraint class’s deactivateConstraints: method instead of calling the removeConstraints: method directly. The deactivateConstraints: method automatically removes the constraints from the correct views.
// Declaration
func removeConstraints(_ constraints: [NSLayoutConstraint])`
// Usage
yourView.removeConstraints(yourView.constraints)
Using Storyboard
s or XIB
s can be such a pain at configuring the constraints as mentioned on your scenario, you have to create IBOutlets for each ones you want to remove. Even so, most of the time Interface Builder
creates more trouble than it solves.
Therefore when having very dynamic content and different states of the view, I would suggest:
Simple Code
private var customConstraints = [NSLayoutConstraint]()
private func activate(constraints: [NSLayoutConstraint]) {
customConstraints.append(contentsOf: constraints)
customConstraints.forEach { $0.isActive = true }
}
private func clearConstraints() {
customConstraints.forEach { $0.isActive = false }
customConstraints.removeAll()
}
private func updateViewState() {
clearConstraints()
let constraints = [
view.leadingAnchor.constraint(equalTo: parentView.leadingAnchor),
view.trailingAnchor.constraint(equalTo: parentView.trailingAnchor),
view.topAnchor.constraint(equalTo: parentView.topAnchor),
view.bottomAnchor.constraint(equalTo: parentView.bottomAnchor)
]
activate(constraints: constraints)
view.layoutIfNeeded()
}
You can try this FLAG_ACTIVITY_REORDER_TO_FRONT
(the document describes exactly what you want to)
A 'router' could be doing anything - particularly NAT, which might involve any amount of bug-ridden messing with traffic...
One reason a device will send a RST is in response to receiving a packet for a closed socket.
It's hard to give a firm but general answer, because every possible perversion has been visited on TCP since its inception, and all sorts of people might be inserting RSTs in an attempt to block traffic. (Some 'national firewalls' work like this, for example.)
The loopback adapter is always up.
ifconfig lo0 alias 172.16.123.1 will add an alias IP 172.16.123.1 to the loopback adapter
ifconfig lo0 -alias 172.16.123.1 will remove it
SELECT ID
FROM A
WHERE NOT EXISTS( SELECT 1
FROM B
WHERE B.ID = A.ID
)
For Python Run This Command
apt-get install -y python-setuptools
For Python 3.
apt-get install -y python3-setuptools
I strongly advice NOT to use the code:
process.setMaxListeners(0);
The warning is not there without reason. Most of the time, it is because there is an error hidden in your code. Removing the limit removes the warning, but not its cause, and prevents you from being warned of a source of resource leakage.
If you hit the limit for a legitimate reason, put a reasonable value in the function (the default is 10).
Also, to change the default, it is not necessary to mess with the EventEmitter prototype. you can set the value of defaultMaxListeners attribute like so:
require('events').EventEmitter.defaultMaxListeners = 15;
no idea how this happened, but i had the same problem. I had to reset my root password: http://www.jovicailic.org/2012/04/reset-forgotten-mysql-root-password-under-windows/
But after my databases that i had previously were either dropped or the new connection did not connect to them. Either way i couldn't access them via workbench. But i could use MySQL again, which was a win for me
Despite following the accepted answer exactly, I was still unable to get the service to start-- I was instead given a failure message during installation stating that the service that was just installed could not be started, as it did not exist, despite using this.serviceInstaller.ServiceName
rather than a literal...
I eventually found an alternative solution that makes use of the command line:
private void serviceInstaller_AfterInstall(object sender, InstallEventArgs e) {
ProcessStartInfo startInfo = new ProcessStartInfo();
startInfo.WindowStyle = ProcessWindowStyle.Hidden;
startInfo.FileName = "cmd.exe";
startInfo.Arguments = "/C sc start " + this.serviceInstaller.ServiceName;
Process process = new Process();
process.StartInfo = startInfo;
process.Start();
}
The windows handle limit for your application is 10,000 handles. You're getting the error because your program is creating too many handles. You'll need to find the memory leak. As other users have suggested, use a Memory Profiler. I use the .Net Memory Profiler as well. Also, make sure you're calling the dispose method on controls if you're removing them from a form before the form closes (otherwise the controls won't dispose). You'll also have to make sure that there are no events registered with the control. I myself have the same issue, and despite what I already know, I still have some memory leaks that continue to elude me..
The missing piece here is Data Conversion
object. It should be in between OLE DB Source and Destination object.
If you are using the Firefox add-on sqlite-manager you can do the following:
Instead of dropping and creating the table again one can just modify it like this.
In the Columns text box, right click on the last column name listed to bring up the context menu and select Edit Column. Note that if the last column in the TABLE definition is the PRIMARY KEY then it will be necessary to first add a new column and then edit the column type of the new column in order to add the FOREIGN KEY definition. Within the Column Type box , append a comma and the
FOREIGN KEY (parent_id) REFERENCES parent(id)
definition after data type. Click on the Change button and then click the Yes button on the Dangerous Operation dialog box.
Reference: Sqlite Manager
After trying all the aforementioned workarounds, if it still throws the same error, you can try exporting the file as CSV
(a second time if you already have).
Especially if you're using scikit learn
, it is best to import
the dataset as a CSV file
.
I spent hours together, whereas the solution was this simple. Export the file as a CSV to the directory where Anaconda
or your classifier tools are installed and try.
If you're doing some performance tuning it's often recommended to set both -XX:PermSize
and -XX:MaxPermSize
to the same value to increase JVM
efficiency.
Here is some information:
You can also specify -XX:+CMSClassUnloadingEnabled
to enable class unloading
option if you are using CMS
GC
. It may help to decrease the probability of Java.lang.OutOfMemoryError: PermGen space
You have to modify two possible limits:
In conf\server.xml
<Connector port="80" protocol="HTTP/1.1"
connectionTimeout="20000"
redirectPort="8443"
maxPostSize="67589953" />
In webapps\manager\WEB-INF\web.xml
<multipart-config>
<!-- 52MB max -->
<max-file-size>52428800</max-file-size>
<max-request-size>52428800</max-request-size>
<file-size-threshold>0</file-size-threshold>
</multipart-config>
An important comment from tmoschou:
As of Ansible 2.10, The documentation for ansible.builtin.copy says:
If you need variable interpolation in copied files, use the
ansible.builtin.template module. Using a variable in the content
field will result in unpredictable output.
For more details see this and an explanation
Original answer:
You could use the copy
module, with the content
parameter:
- copy: content="{{ your_json_feed }}" dest=/path/to/destination/file
The docs here: copy module
This solution worked better for me:
Note: You will have to check the box "Do not show this message again" the first time for the organized imports, but it works as expected after that.
step 2. with: Edit -> Macros -> "Start Macro Recording"
step 6. with: Edit -> Macros -> "Stop Macro Recording"
Everything else remains the same.
8. The Preferences contain the Keymap settings. Use the input field to filter the content, as shown in the screenshot.
Although others have already clarified that there is no direct goto
equivalent in bash (and provided the closest alternatives such as functions, loops, and break), I would like to illustrate how using a loop plus break
can simulate a specific type of goto statement.
The situation where I find this the most useful is when I need to return to the beginning of a section of code if certain conditions are not met. In the example below, the while loop will run forever until ping stops dropping packets to a test IP.
#!/bin/bash
TestIP="8.8.8.8"
# Loop forever (until break is issued)
while true; do
# Do a simple test for Internet connectivity
PacketLoss=$(ping "$TestIP" -c 2 | grep -Eo "[0-9]+% packet loss" | grep -Eo "^[0-9]")
# Exit the loop if ping is no longer dropping packets
if [ "$PacketLoss" == 0 ]; then
echo "Connection restored"
break
else
echo "No connectivity"
fi
done
We can declare static methods with same signature in subclass, but it is not considered overriding as there won’t be any run-time polymorphism.Because since all static members of a class are loaded at the time of class loading so it decide at compile time(overriding at run time) Hence the answer is ‘No’.
I was executing a get request an also want to see just the response and nothing else, seems like magic is done with -silent,-s option.
From the curl man page:
-s, --silent Silent or quiet mode. Don't show progress meter or error messages. Makes Curl mute. It will still output the data you ask for, potentially even to the terminal/stdout unless you redirect it.
Below the examples:
curl -s "http://host:8080/some/resource"
curl -silent "http://host:8080/some/resource"
Using custom headers
curl -s -H "Accept: application/json" "http://host:8080/some/resource")
Using POST method with a header
curl -s -X POST -H "Content-Type: application/json" "http://host:8080/some/resource") -d '{ "myBean": {"property": "value"}}'
You can also customize the output for specific values with -w, below the options I use to get just response codes of the curl:
curl -s -o /dev/null -w "%{http_code}" "http://host:8080/some/resource"
Let's say I have a (fake) directory structure like:
.../root/
/app
bootstrap.php
/scripts
something/
somescript.php
/public
index.php
Now assume that bootstrap.php
has some code included for setting up database connections or some other kind of boostrapping stuff.
Assume you want to include a file in boostrap.php
's folder called init.php
. Now, to avoid scanning the entire include path with include 'init.php'
, you could use include './init.php'
.
There's a problem though. That ./
will be relative to the script that included bootstrap.php
, not bootstrap.php
. (Technically speaking, it will be relative to the working directory.)
dirname(__FILE__)
allows you to get an absolute path (and thus avoid an include path search) without relying on the working directory being the directory in which bootstrap.php
resides.
(Note: since PHP 5.3, you can use __DIR__
in place of dirname(__FILE__)
.)
Now, why not just use include 'init.php';
?
As odd as it is at first though, .
is not guaranteed to be in the include path. Sometimes to avoid useless stat()
's people remove it from the include path when they are rarely include files in the same directory (why search the current directory when you know includes are never going to be there?).
Note: About half of this answer is address in a rather old post: What's better of require(dirname(__FILE__).'/'.'myParent.php') than just require('myParent.php')?
This will do the trick:
public void itemClicked(View v) {
if (((CheckBox) v).isChecked()) {
Toast.makeText(MyAndroidAppActivity.this,
"Checked", Toast.LENGTH_LONG).show();
}
}
I use this step, first Set delegate texfield in viewdidload.
override func viewDidLoad() {
super.viewDidLoad()
textfield.delegate = self
}
and then shouldChangeCharactersIn after you include UITextFieldDelegate.
extension viewController: UITextFieldDelegate {
func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {
let newLength = (textField.text?.utf16.count)! + string.utf16.count - range.length
if newLength <= 8 {
return true
} else {
return false
}
}
}
I know it's super late, but try Integer[]
instead of int[]
.
Add
@Produces({"image/jpeg,image/png"})
to
@POST
@Path("/pdf")
@Consumes({ MediaType.MULTIPART_FORM_DATA })
@Produces({"image/jpeg,image/png"})
//@Produces("text/plain")
public Response uploadPdfFile(@FormDataParam("file") InputStream fileInputStream,@FormDataParam("file") FormDataContentDisposition fileMetaData) throws Exception {
...
}
Now there are a lot of cloud providers , providing solutions like MBaaS (Mobile Backend as a Service). Some only give access to cloud database, some will do the user management for you, some let you place code around cloud database and there are facilities of access control, push notifications, analytics, integrated image and file hosting etc.
Here are some providers which have a "free-tier" (may change in future):
Open source solutions:
Based on @L.B.'s solution, the (typed as Object
rather than Anonymous
) VB code is
Dim oJson As Object = JsonConvert.DeserializeObject(File.ReadAllText(MyFilePath))
I should mention that this is quick and useful for constructing HTTP call content where the type isn't required. And using Object
rather than Anonymous
means you can maintain Option Strict On
in your Visual Studio environment - I hate turning that off.
On windows 8, go to C:\Program Files\Java\jre7\bin and in the address bar, type "cmd" without the quotes. This will launch the terminal. Then type in string as describe here.
You could do it yourself (thats what I did) - in order to not be bothered with exception handling, you simply extend the RuntimeException, your class could look something like this:
public class NotImplementedException extends RuntimeException {
private static final long serialVersionUID = 1L;
public NotImplementedException(){}
}
You could extend it to take a message - but if you use the method as I do (that is, as a reminder, that there is still something to be implemented), then usually there is no need for additional messages.
I dare say, that I only use this method, while I am in the process of developing a system, makes it easier for me to not lose track of which methods are still not implemented properly :)
The problem with iframes not getting 100% height is not because they're unwieldy. The problem is that for them to get 100% height they need their parents to have 100% height. If one of the iframe's parents is not 100% tall the iframe won't be able to go beyond that parent's height.
So the best possible solution would be:
html, body, iframe { height: 100%; }
…given the iframe is directly under body. If the iframe has a parent between itself and the body, the iframe will still get the height of its parent. One must explicitly set the height of every parent to 100% as well (if that's what one wants).
Tested in:
Chrome 30
, Firefox 24
, Safari 6.0.5
, Opera 16
, IE 7, 8, 9 and 10
PS: I don't mean to be picky but the solution marked as correct doesn't work on Firefox 24
at the time of this writing, but worked on Chrome 30
. Haven't tested on other browsers though. I came across the error on Firefox
because the page I was testing had very little content... It could be it's my meager markup or the CSS
reset altering the output, but if I experienced this error I guess the accepted answer doesn't work in every situation.
Update 2021
@Zeni suggested this in 2015:
iframe { height: 100vh }
...and indeed it does the trick!
Careful with positioning as it can potentially break the effect. Test thoroughly, you might not need positioning depending of what you're trying to achieve.
You can also use the summary for linear models:
summary(lm(obs ~ mod, data=df))$r.squared
import sys
sys.exit()
Don't use Integrated Security.
Use User Id=yourUser; pwd=yourPwd;
This solves the problem.
You can use this syntax if some grads are attached with your variables.
y=torch.Tensor.cpu(x).detach().numpy()[:,:,:,-1]
If your code must run under Python2 and Python3, use the 2to3 six library like this:
import six
six.next(g) # on PY2K: 'g.next()' and onPY3K: 'next(g)'
This is a bit of an old question, but I thought I would contribute my 2 cents anyway since this thread came up in conversation today.
This doesn't exactly answer why is there no const? but how to make your classes immutable. (Unfortunately I have not enough reputation yet to post as a comment to the accepted answer)
The way to guarantee immutability on an object is to design your classes more carefully to be immutable. This requires a bit more care than a mutable class.
This goes back to Josh Bloch's Effective Java Item 15 - Minimize Mutability. If you haven't read the book, pick up a copy and read it over a few times I guarantee it will up your figurative "java game".
In item 15 Bloch suggest that you should limit the mutability of classes to ensure the object's state.
To quote the book directly:
An immutable class is simply a class whose instances cannot be modified. All of the information contained in each instance is provided when it is created and is fixed for the lifetime of the object. The Java platform libraries contain many immutable classes, including String, the boxed primitive classes, and BigInte- ger and BigDecimal. There are many good reasons for this: Immutable classes are easier to design, implement, and use than mutable classes. They are less prone to error and are more secure.
Bloch then describes how to make your classes immutable, by following 5 simple rules:
final
).final
.private
. For more details I highly recommend picking up a copy of the book.
As noted in the release email, linked to from the release tweet and noted in large orange warning that appears on the front page of the documentation, and less orange, but still present, in the readme on the repository and the release on pypi:
xlrd has explicitly removed support for anything other than xls files.
In your case, the solution is to:
openpyxl
: https://openpyxl.readthedocs.io/en/stable/df1 = pd.read_excel(
os.path.join(APP_PATH, "Data", "aug_latest.xlsm"),
engine='openpyxl',
)
You can check internet with below code as well:
public class CheckInternetConnection {
public Context context = null;
public CheckInternetConnection(Context ctx) {
this.context = ctx;
}
public boolean CheckInternet() {
return isOnline();
}
public Boolean isOnline()
{
try {
if(isNetAvailable(context))
return true;
else
{
try {
URL url = new URL("http://www.google.com");
HttpURLConnection urlc = (HttpURLConnection) url
.openConnection();
urlc.setRequestProperty("User-Agent", "Test");
urlc.setRequestProperty("Connection", "close");
urlc.setConnectTimeout(3000); // This is time limit if the
// connection time limit
try {
urlc.connect();
Log.e("TAG", " urlc ----------" + urlc.getResponseCode());
if (urlc.getResponseCode() == 200) {
return true;
}
}catch (Exception e){
e.printStackTrace();
}
} catch (MalformedURLException e1) {
e1.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}catch (Exception e){
e.printStackTrace();
}
return false;
}
public synchronized static boolean isNetAvailable(Context context){
try{
boolean isNetAvailable=false;
if ( context != null )
{
ConnectivityManager mgr = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
if ( mgr != null )
{
boolean mobileNetwork = false;
boolean wifiNetwork = false;
boolean wiMaxNetwork = false;
boolean mobileNetworkConnecetd = false;
boolean wifiNetworkConnecetd = false;
boolean wiMaxNetworkConnected = false;
NetworkInfo mobileInfo = mgr.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
NetworkInfo wifiInfo = mgr.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
NetworkInfo wiMaxInfo = mgr.getNetworkInfo(ConnectivityManager.TYPE_WIMAX);
if ( mobileInfo != null )
mobileNetwork = mobileInfo.isAvailable();
if ( wifiInfo != null )
wifiNetwork = wifiInfo.isAvailable();
if(wiMaxInfo != null)
wiMaxNetwork = wiMaxInfo.isAvailable();
if(wifiNetwork == true)
wifiNetworkConnecetd = wifiInfo.isConnectedOrConnecting();
if(mobileNetwork == true)
mobileNetworkConnecetd = mobileInfo.isConnectedOrConnecting();
if(wiMaxNetwork == true)
wiMaxNetworkConnected = wiMaxInfo.isConnectedOrConnecting();
isNetAvailable = ( mobileNetworkConnecetd || wifiNetworkConnecetd || wiMaxNetworkConnected );
}
}
return isNetAvailable;
}catch(NullPointerException e)
{
return false;
}catch(Exception e)
{
return false;
}
}
}
Quote your args in Testscript 1:
echo "TestScript1 Arguments:"
echo "$1"
echo "$2"
echo "$#"
./testscript2 "$1" "$2"
JSON:-
For POST request using json object it can be configured by selecting
Body -> raw -> application/json
Form Data(For Normal content POST):- multipart/form-data
For normal POST request (using multipart/form-data) it can be configured by selecting
Body -> form-data
put quotes around your variable. If it happens to have spaces, it will give you "ambiguous redirect" as well. also check your spelling
echo $AAAA" "$DDDD" "$MOL_TAG >> "${OUPUT_RESULTS}"
eg of ambiguous redirect
$ var="file with spaces"
$ echo $AAAA" "$DDDD" "$MOL_TAG >> ${var}
bash: ${var}: ambiguous redirect
$ echo $AAAA" "$DDDD" "$MOL_TAG >> "${var}"
$ cat file\ with\ spaces
aaaa dddd mol_tag
You can use either = or "space". For instance following two commands return the same
git log --author="Developer1"
git log --author "Developer1"
You can do this by setting the date of expiry to yesterday.
Setting it to "-1" doesn't work. That marks a cookie as a Sessioncookie.
Is your logic not round the wrong way in that example, you have it hiding when the screen is bigger than 1024. Reverse the cases, make the none
in to a block
and vice versa.
Since the introduction of the DocumentFilter
in Java 1.4, the need to override Document
has been lessoned.
DocumentFilter
provides the means for filtering content been passed to the Document
before it actually reaches it.
These allows the field to continue to maintain what ever document it needs, while providing the means to filter the input from the user.
import java.awt.EventQueue;
import java.awt.GridBagLayout;
import javax.swing.JFrame;
import javax.swing.JPasswordField;
import javax.swing.JTextField;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.text.AbstractDocument;
import javax.swing.text.AttributeSet;
import javax.swing.text.BadLocationException;
import javax.swing.text.DocumentFilter;
public class LimitTextField {
public static void main(String[] args) {
new LimitTextField();
}
public LimitTextField() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
ex.printStackTrace();
}
JTextField pfPassword = new JTextField(20);
((AbstractDocument)pfPassword.getDocument()).setDocumentFilter(new LimitDocumentFilter(15));
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new GridBagLayout());
frame.add(pfPassword);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class LimitDocumentFilter extends DocumentFilter {
private int limit;
public LimitDocumentFilter(int limit) {
if (limit <= 0) {
throw new IllegalArgumentException("Limit can not be <= 0");
}
this.limit = limit;
}
@Override
public void replace(FilterBypass fb, int offset, int length, String text, AttributeSet attrs) throws BadLocationException {
int currentLength = fb.getDocument().getLength();
int overLimit = (currentLength + text.length()) - limit - length;
if (overLimit > 0) {
text = text.substring(0, text.length() - overLimit);
}
if (text.length() > 0) {
super.replace(fb, offset, length, text, attrs);
}
}
}
}
How about this?
var people = [
{
name: 'a75',
item1: false,
item2: false
},
{
name: 'z32',
item1: true,
item2: false
},
{
name: 'e77',
item1: false,
item2: false
}];
function sort_by_key(array, key)
{
return array.sort(function(a, b)
{
var x = a[key]; var y = b[key];
return ((x < y) ? -1 : ((x > y) ? 1 : 0));
});
}
people = sort_by_key(people, 'name');
This allows you to specify the key by which you want to sort the array so that you are not limited to a hard-coded name sort. It will work to sort any array of objects that all share the property which is used as they key. I believe that is what you were looking for?
And here is a jsFiddle: http://jsfiddle.net/6Dgbu/
Example: index = False
import pandas as pd
writer = pd.ExcelWriter("dataframe.xlsx", engine='xlsxwriter')
dataframe.to_excel(writer,sheet_name = dataframe, index=False)
writer.save()
"Topology was destroyed" might be caused by mongoose disconnecting before mongo document indexes are created, per this comment
In order to make sure all models have their indexes built before disconnecting, you can:
await Promise.all(mongoose.modelNames().map(model => mongoose.model(model).ensureIndexes()));
await mongoose.disconnect();
Try Converting C++ enums to strings. The comments have improvements that solve the problem when enum items have arbitrary values.
There is no such method as java.util.Random.getRandomDigits
.
To get a random number use nextInt:
return random.nextInt(10 ** num)
Also you should create the random object once when your application starts:
Random random = new Random()
You should not create a new random object every time you want a new random number. Doing this destroys the randomness.
Superkey :A set of attributes or combination of attributes which uniquely identify the tuple in a given relation . Superkey have two properties uniqueness and reducible set
Candidate key: Minimal set of superkey which have following two properties: uniqueness and irreducible set or attribute
It's not enabled by default but you can enable it by going to:
asp:HiddenField
as:
<asp:HiddenField runat="server" ID="hfProduct" ClientIDMode="Static" />
js code:
$("#hfProduct").val("test")
and the code behind:
hfProduct.Value.ToString();
It's not a matter of deep copy or shallow copy, none of what you're doing is deep copy.
Here:
>>> new = original
you're creating a new reference to the the list/dict referenced by original.
while here:
>>> new = original.copy()
>>> # or
>>> new = list(original) # dict(original)
you're creating a new list/dict which is filled with a copy of the references of objects contained in the original container.
Just try this in Javascript:
$previous = "javascript:history.go(-1)";
Or you can try it in PHP:
if(isset($_SERVER['HTTP_REFERER'])) {
$previous = $_SERVER['HTTP_REFERER'];
}
Also removing the submodule and then running git submodule init
and git submodule update
will obviously do the trick, but may not always be appropriate or possible.
Here's a video and explaination how to use Instruments and NSZombie to find and fix memory crashes on iOS: http://www.markj.net/iphone-memory-debug-nszombie/
The following function will allow you to sort an array of objects on one or multiple properties, either ascending (default) or descending on each property, and allow you to choose whether or not to perform case sensitive comparisons. By default, this function performs case insensitive sorts.
The first argument must be the array containing the objects.
The subsequent argument(s) must be a comma separated list of strings that reference the different object properties to sort by. The last argument (which is optional) is a boolean to choose whether or not to perform case sensitive sorts - use true
for case sensitive sorts.
The function will sort each property/key in ascending order by default. If you want a particular key to sort in descending order, then instead pass in an array in this format: ['property_name', true]
.
Here are some sample uses of the function followed by an explanation (where homes
is an array containing the objects):
objSort(homes, 'city')
--> sort by city (ascending, case in-sensitive)
objSort(homes, ['city', true])
--> sort by city (descending, case in-sensitive)
objSort(homes, 'city', true)
--> sort by city then price (ascending, case sensitive)
objSort(homes, 'city', 'price')
--> sort by city then price (both ascending, case in-sensitive)
objSort(homes, 'city', ['price', true])
--> sort by city (ascending) then price (descending), case in-sensitive)
And without further ado, here's the function:
function objSort() {
var args = arguments,
array = args[0],
case_sensitive, keys_length, key, desc, a, b, i;
if (typeof arguments[arguments.length - 1] === 'boolean') {
case_sensitive = arguments[arguments.length - 1];
keys_length = arguments.length - 1;
} else {
case_sensitive = false;
keys_length = arguments.length;
}
return array.sort(function (obj1, obj2) {
for (i = 1; i < keys_length; i++) {
key = args[i];
if (typeof key !== 'string') {
desc = key[1];
key = key[0];
a = obj1[args[i][0]];
b = obj2[args[i][0]];
} else {
desc = false;
a = obj1[args[i]];
b = obj2[args[i]];
}
if (case_sensitive === false && typeof a === 'string') {
a = a.toLowerCase();
b = b.toLowerCase();
}
if (! desc) {
if (a < b) return -1;
if (a > b) return 1;
} else {
if (a > b) return -1;
if (a < b) return 1;
}
}
return 0;
});
} //end of objSort() function
And here's some sample data:
var homes = [{
"h_id": "3",
"city": "Dallas",
"state": "TX",
"zip": "75201",
"price": 162500
}, {
"h_id": "4",
"city": "Bevery Hills",
"state": "CA",
"zip": "90210",
"price": 1000000
}, {
"h_id": "5",
"city": "new york",
"state": "NY",
"zip": "00010",
"price": 1000000
}, {
"h_id": "6",
"city": "Dallas",
"state": "TX",
"zip": "85000",
"price": 300000
}, {
"h_id": "7",
"city": "New York",
"state": "NY",
"zip": "00020",
"price": 345000
}];
public static boolean BFS(ListNode n, int x){
if(n==null){
return false;
}
Queue<ListNode<Integer>> q = new Queue<ListNode<Integer>>();
ListNode<Integer> tmp = new ListNode<Integer>();
q.enqueue(n);
tmp = q.dequeue();
if(tmp.val == x){
return true;
}
while(tmp != null){
for(ListNode<Integer> child: n.getChildren()){
if(child.val == x){
return true;
}
q.enqueue(child);
}
tmp = q.dequeue();
}
return false;
}
Error : the hierarchy of the type "class name" is inconsistent error.
solution : class OtherDepJar {} --> is inside "other.dep.jar" .
class DepJar extends OtherDepJar {} --> is inside "dep.jar".
class ProblematicClass extends DepJar {} --> is inside current project .
If dep.jar is in the project's classpath, but other.dep.jar isn't in the project's classpath, Eclipse will show the" The hierarchy of the type ... is inconsistent error"
Use substr()
with a negative number for the 2nd argument.
$newstring = substr($dynamicstring, -7);
From the php docs:
string substr ( string $string , int $start [, int $length ] )
If start is negative, the returned string will start at the start'th character from the end of string.
And of course you can never call the two functions at the same time. Not any one in the world except you are working on two processors simultaneously.
The best way is to call a JavaScript parent function and in that, specify all the sequence of function you want to call. For example,
function ShowDiv1() {
document.getElementById("ReportDiv").style.display = 'block';
return false;
}
function validateView()
{
if (document.getElementById("ctl00_ContentPlaceHolder1_DLCategory").selectedIndex == 0) {
document.getElementById("ctl00_ContentPlaceHolder1_ErrorMsg").innerHTML = "Please Select Your Category";
document.getElementById("ctl00_ContentPlaceHolder1_DLCategory").focus();
return false;
}
if (document.getElementById("ctl00_ContentPlaceHolder1_DLEmpName").selectedIndex == 0) {
document.getElementById("ctl00_ContentPlaceHolder1_ErrorMsg").innerHTML = "Please Select Your Employee Name";
document.getElementById("ctl00_ContentPlaceHolder1_DLEmpName").focus();
return false;
}
ShowDiv1();
return true;
}
While it was discussed in the comments, there isn't an answer containing it yet, so it can be easy to miss. DATE_FORMAT works really well and is flexible to handle many different patterns.
DATE_FORMAT(date,'%Y%m')
To put it in a query:
SELECT DATE_FORMAT(test_date,'%Y%m') AS date FROM test_table;
If you are working on a Mac, you can use Apple Configurator 2 (https://itunes.apple.com/us/app/apple-configurator-2/id1037126344?mt=12).
This application is used to configure and install apps in any iOS device.
Apple Configurator 2 makes it easy to deploy iPad, iPhone, iPod touch, and Apple TV devices in your school or business.
the reason why it returns < filter object >
is that, filter is class instead of built-in function.
help(filter)
you will get following:
Help on class filter in module builtins:
class filter(object)
| filter(function or None, iterable) --> filter object
|
| Return an iterator yielding those items of iterable for which function(item)
| is true. If function is None, return the items that are true.
|
| Methods defined here:
|
| __getattribute__(self, name, /)
| Return getattr(self, name).
|
| __iter__(self, /)
| Implement iter(self).
|
| __new__(*args, **kwargs) from builtins.type
| Create and return a new object. See help(type) for accurate signature.
|
| __next__(self, /)
| Implement next(self).
|
| __reduce__(...)
| Return state information for pickling.
npx
runs a command of a package without installing it explicitly.
Use cases:
package.json
to execute something without installing these packages as project's dependencies.Syntax:
npx [options] [-p|--package <package>] <command> [command-arg]...
Package is optional:
npx -p uglify-js uglifyjs --output app.min.js app.js common.js
+----------------+ +--------------------------------------------+
package (optional) command, followed by arguments
For example:
Start a HTTP Server : npx http-server
Lint code : npx eslint ./src
# Run uglifyjs command in the package uglify-js
Minify JS : npx -p uglify-js uglifyjs -o app.min.js app.js common.js
Minify CSS : npx clean-css-cli -o style.min.css css/bootstrap.css style.css
Minify HTML : npx html-minifier index-2.html -o index.html --remove-comments --collapse-whitespace
Scan for open ports : npx evilscan 192.168.1.10 --port=10-9999
Cast video to Chromecast : npx castnow http://commondatastorage.googleapis.com/gtv-videos-bucket/sample/ForBiggerFun.mp4
More about command
:
The usual method is to use the NEWID() function, which generates a unique GUID. So,
SELECT * FROM dbo.Foo ORDER BY NEWID();
I have a solution based on @Cherniv's answer (works on macOS for me). Two differences: I have a Main2Activity.java in the java folder that I do the same thing to, and I don't bother calling ./gradlew clean since it seems like the react-native packager does that automatically anyways.
Anyways, my solution does what Cherniv's does, except I made a bash shell script for it since I'm building multiple apps using one set of code and want to be able to easily change the package name whenever I run my npm scripts.
Here is the bash script I used. You'll need to modify the packageName you want to use, and add anything else you want to it... but here are the basics. You can create a .sh file, give permission, and then run it from the same folder you run react-native from:
rm -rf ./android/app/src/main/java
mkdir -p ./android/app/src/main/java/com/MyWebsite/MyAppName
packageName="com.MyWebsite.MyAppName"
sed -i '' -e "s/.*package.*/package "$packageName";/" ./android/app/src/main/javaFiles/Main2Activity.java
sed -i '' -e "s/.*package.*/package "$packageName";/" ./android/app/src/main/javaFiles/MainActivity.java
sed -i '' -e "s/.*package.*/package "$packageName";/" ./android/app/src/main/javaFiles/MainApplication.java
sed -i '' -e "s/.*package=\".*/ package=\""$packageName"\"/" ./android/app/src/main/AndroidManifest.xml
sed -i '' -e "s/.*package = '.*/ package = '"$packageName"',/" ./android/app/BUCK
sed -i '' -e "s/.*applicationId.*/ applicationId \""$packageName"\"/" ./android/app/build.gradle
cp -R ./android/app/src/main/javaFiles/ ./android/app/src/main/java/com/MyWebsite/MyAppName
DISCLAIMER: You'll need to edit MainApplication.java's comment near the bottom of the java file first. It has the word 'package' in the comment. Because of how the script works, it takes any line with the word 'package' in it and replaces it. Because of this, this script may not be future proofed as there might be that same word used somewhere else.
Second Disclaimer: the first 3 sed commands edit the java files from a directory called javaFiles. I created this directory myself since I want to have one set of java files that are copied from there (as I might add new packages to it in the future). You will probably want to do the same thing. So copy all the files from the java folder (go through its subfolders to find the actual java files) and put them in a new folder called javaFiles.
Third Disclaimer: You'll need to edit the packageName variable to be in line with the paths at the top of the script and bottom (com.MyWebsite.MyAppName to com/MyWebsite/MyAppName)
@scottyab the parametrized DatabaseUtils.queryNumEntries(db, table, whereparams) exists at API 11 +, the one without the whereparams exists since API 1. The answer would have to be creating a Cursor with a db.rawQuery:
Cursor mCount= db.rawQuery("select count(*) from users where uname='" + loginname + "' and pwd='" + loginpass +"'", null);
mCount.moveToFirst();
int count= mCount.getInt(0);
mCount.close();
I also like @Dre's answer, with the parameterized query.
Another answer is:
Try checking the View dimensions at onWindowFocusChanged
.
Here is how i resolved this:
1 - create a Field Variable like: private Menu mMenuItem;
2 - override the method invalidateOptionsMenu():
@Override
public void invalidateOptionsMenu() {
super.invalidateOptionsMenu();
}
3 - call the method invalidateOptionsMenu()
in your onCreate()
4 - add mMenuItem = menu
in your onCreateOptionsMenu(Menu menu)
like this:
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.webview_menu, menu);
mMenuItem = menu;
return super.onCreateOptionsMenu(menu);
}
5 - in the method onOptionsItemSelected(MenuItem item)
change the icon you want like this:
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()){
case R.id.R.id.action_settings:
mMenuItem.getItem(0).setIcon(R.drawable.ic_launcher); // to change the fav icon
//Toast.makeText(this, " " + mMenuItem.getItem(0).getTitle(), Toast.LENGTH_SHORT).show(); <<--- this to check if the item in the index 0 is the one you are looking for
return true;
}
return super.onOptionsItemSelected(item);
}
Try this:
text-overflow: ellipsis;
overflow: hidden;
white-space:nowrap;
In a different thread Justin suggests that the fastest way is to use strtok()
$url = strtok($url, '?');
See his full answer with speed tests as well here: https://stackoverflow.com/a/1251650/452515
In case anyone needs to try and merge two dataframes together on the index (instead of another column), this also works!
T1 and T2 are dataframes that have the same indices
import pandas as pd
T1 = pd.merge(T1, T2, on=T1.index, how='outer')
P.S. I had to use merge because append would fill NaNs in unnecessarily.
first of all you need to setup line ending preferences in termnial
git config --global core.autocrlf input
git config --global core.safecrlf true
Then you can use :q
If you want to emulate ___.new()
syntax you can do something along the lines of:
type Thing struct {
Name string
Num int
}
type Constructor_Thing struct {}
func (c CThing) new(<<CONSTRUCTOR ARGS>>) Thing {
var thing Thing
//initiate thing from constructor args
return thing
}
var cThing CThing
func main(){
var myThing Thing
myThing = cThing.new(<<CONSTRUCTOR ARGS>>)
//...
}
Granted, it is a shame that Thing.new()
cannot be implemented without CThing.new()
also being implemented (iirc) which is a bit of a shame...
Use the npm bin
command to get the node modules /bin directory of your project
$ $(npm bin)/<binary-name> [args]
e.g.
$ $(npm bin)/bower install
If you dont want to modify the xtick labels, you can just use:
plt.xticks(rotation=45)
var test = parseInt($("#testid").val(), 10);
You have to tell it you want the value
of the input you are targeting.
And also, always provide the second argument (radix) to parseInt
. It tries to be too clever and autodetect it if not provided and can lead to unexpected results.
Providing 10
assumes you are wanting a base 10 number.
Here is a great article on Common Design Patterns for Android:
Creational patterns:
Structural patterns:
Behavioral patterns:
Here's an easier way:
sudo apt-get install maven
More details are here.
The text book example for legitimate usage of the nolock hint is report sampling against a high update OLTP database.
To take a topical example. If a large US high street bank wanted to run an hourly report looking for the first signs of a city level run on the bank, a nolock query could scan transaction tables summing cash deposits and cash withdrawals per city. For such a report the tiny percentage of error caused by rolled back update transactions would not reduce the value of the report.
In your case the "Vendor code 17002" is the equivalent of the ORA-12541 error: It's most likely that your listener is down, or has an improper port or service name. From the docs:
ORA-12541: TNS no listener
Cause: Listener for the source repository has not been started.
Action: Start the Listener on the machine where the source repository resides.
If the ViewPager
you're using is a child of a ScrollView
AND has a PagerTitleStrip
child you'll need to use a slight modification of the great answers already provided. For reference my XML looks like this:
<ScrollView
android:id="@+id/match_scroll_view"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@color/white">
<LinearLayout
android:id="@+id/match_and_graphs_wrapper"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<view
android:id="@+id/pager"
class="com.printandpixel.lolhistory.util.WrapContentHeightViewPager"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.v4.view.PagerTitleStrip
android:id="@+id/pager_title_strip"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="top"
android:background="#33b5e5"
android:paddingBottom="4dp"
android:paddingTop="4dp"
android:textColor="#fff" />
</view>
</LinearLayout>
</ScrollView>
In your onMeasure
you have to ADD the measuredHeight of the PagerTitleStrip
if one is found. Otherwise its height won't be considered into the largest height of all the children even though it takes up additional space.
Hope this helps someone else. Sorry that it's a bit of a hack...
public class WrapContentHeightViewPager extends ViewPager {
public WrapContentHeightViewPager(Context context) {
super(context);
}
public WrapContentHeightViewPager(Context context, AttributeSet attrs) {
super(context, attrs);
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int pagerTitleStripHeight = 0;
int height = 0;
for(int i = 0; i < getChildCount(); i++) {
View child = getChildAt(i);
child.measure(widthMeasureSpec, MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
int h = child.getMeasuredHeight();
if (h > height) {
// get the measuredHeight of the tallest fragment
height = h;
}
if (child.getClass() == PagerTitleStrip.class) {
// store the measured height of the pagerTitleStrip if one is found. This will only
// happen if you have a android.support.v4.view.PagerTitleStrip as a direct child
// of this class in your XML.
pagerTitleStripHeight = h;
}
}
heightMeasureSpec = MeasureSpec.makeMeasureSpec(height+pagerTitleStripHeight, MeasureSpec.EXACTLY);
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
}
HTML/CSS Approach
If you are looking for an option that does not require much JavaScript (and and all the problems that come with it, such as rapid scroll event calls), it is possible to gain the same behavior by adding a wrapper <div>
and a couple of styles. I noticed much smoother scrolling (no elements lagging behind) when I used the following approach:
HTML
<div id="wrapper">
<div id="fixed">
[Fixed Content]
</div><!-- /fixed -->
<div id="scroller">
[Scrolling Content]
</div><!-- /scroller -->
</div><!-- /wrapper -->
CSS
#wrapper { position: relative; }
#fixed { position: fixed; top: 0; right: 0; }
#scroller { height: 100px; overflow: auto; }
JS
//Compensate for the scrollbar (otherwise #fixed will be positioned over it).
$(function() {
//Determine the difference in widths between
//the wrapper and the scroller. This value is
//the width of the scroll bar (if any).
var offset = $('#wrapper').width() - $('#scroller').get(0).clientWidth;
//Set the right offset
$('#fixed').css('right', offset + 'px');?
});
Of course, this approach could be modified for scrolling regions that gain/lose content during runtime (which would result in addition/removal of scrollbars).
For me
document.addEventListener("mousewheel", this.mousewheel.bind(this), { passive: false });
did the trick (the { passive: false }
part).
To import the cert:
openssl s_client -showcerts -connect AAA.BBB.CCC.DDD:9443 > certs.txt
This will extract certs in PEM format.openssl x509 -in certs.txt -out certs.der -outform DER
sudo keytool -importcert -file certs.der -keystore <path-to-cacerts>
Default cacerts password is 'changeit'.If the cert is issued for an FQDN and you're trying to connect by IP address in your Java code, then this should probably be fixed in your code rather than messing with certificate itself. Change your code to connect by FQDN. If FQDN is not resolvable on your dev machine, simply add it to your hosts file, or configure your machine with DNS server that can resolve this FQDN.
Cron is a time-based scheduling service in Linux / Unix-like computer operating systems. Cron job are used to schedule commands to be executed periodically. You can setup commands or scripts, which will repeatedly run at a set time. Cron is one of the most useful tool in Linux or UNIX like operating systems. The cron service (daemon) runs in the background and constantly checks the /etc/crontab file, /etc/cron./* directories. It also checks the /var/spool/cron/ directory.
In the following example, the crontab command shown below will activate the cron tasks automatically every ten minutes:
*/10 * * * * /usr/bin/php /opt/test.php
In the above sample, the */10 * * * * represents when the task should happen. The first figure represents minutes – in this case, on every "ten" minute. The other figures represent, respectively, hour, day, month and day of the week.
*
is a wildcard, meaning "every time".
Start with finding out your PHP binary by typing in command line:
whereis php
The output should be something like:
php: /usr/bin/php /etc/php.ini /etc/php.d /usr/lib64/php /usr/include/php /usr/share/php /usr/share/man/man1/php.1.gz
Specify correctly the full path in your command.
crontab -e
To see what you got in crontab.
To exit from vim editor without saving just click:
Shift+:
And then type q!
Embrace the future! Just to be complete, you can also do this the Python 3k way by using the print function:
from __future__ import print_function # Py 2.6+; In Py 3k not needed
mylist = ['10', 12, '14'] # Note that 12 is an int
print(*mylist,sep='\n')
Prints:
10
12
14
Eventually, print
as Python statement will go away... Might as well start to get used to it.
What works for me was org.mockito.ArgumentMatchers.isA
for example:
isA(long[].class)
that works fine.
the implementation difference of each other is:
public static <T> T any(Class<T> type) {
reportMatcher(new VarArgAware(type, "<any " + type.getCanonicalName() + ">"));
return Primitives.defaultValue(type);
}
public static <T> T isA(Class<T> type) {
reportMatcher(new InstanceOf(type));
return Primitives.defaultValue(type);
}
To perfectly forward without chopping the absoluteURI
of the request and the Host
in the header:
server {
listen 35005;
location / {
rewrite ^(.*)$ "://$http_host$uri$is_args$args";
rewrite ^(.*)$ "http$uri$is_args$args" break;
proxy_set_header Host $host;
proxy_pass https://deploy.org.local:35005;
}
}
Found here: https://opensysnotes.wordpress.com/2016/11/17/nginx-proxy_pass-with-absolute-url/
select a.ip, a.os, a.hostname, a.port, a.protocol,
b.state
from a
left join b on a.ip = b.ip
and a.port = b.port
The error you are getting is either because you are doing TO_DATE
on a column that's already a date, and you're using a format mask that is different to your nls_date_format
parameter[1] or because the event_occurrence column contains data that isn't a number.
You need to a) correct your query so that it's not using TO_DATE on the date column, and b) correct your data, if event_occurrence is supposed to be just numbers.
And fix the datatype of that column to make sure you can only store numbers.
[1] What Oracle does when you do: TO_DATE(date_column, non_default_format_mask)
is:
TO_DATE(TO_CHAR(date_column, nls_date_format), non_default_format_mask)
Generally, the default nls_date_format
parameter is set to dd-MON-yy
, so in your query, what is likely to be happening is your date column is converted to a string in the format dd-MON-yy, and you're then turning it back to a date using the format MMDD. The string is not in this format, so you get an error.
Make sure you've set your target API (different from the target SDK) in the Project Properties (not the manifest) to be at least 4.0/API 14.
EDIT 2015 May
Disclaimer: I've taken the snippet from the answer linked below:
In addition to WebKit, as of Firefox 35 we'll be able to use the appearance
property:
Using
-moz-appearance
with thenone
value on a combobox now remove the dropdown button
So now in order to hide the default styling, it's as easy as adding the following rules on our select element:
select {
-webkit-appearance: none;
-moz-appearance: none;
appearance: none;
}
For IE 11 support, you can use [::-ms-expand
][15].
select::-ms-expand { /* for IE 11 */
display: none;
}
Old Answer
Unfortunately what you ask is not possible by using pure CSS. However, here is something similar that you can choose as a work around. Check the live code below.
div { _x000D_
margin: 10px;_x000D_
padding: 10px; _x000D_
border: 2px solid purple; _x000D_
width: 200px;_x000D_
-webkit-border-radius: 5px;_x000D_
-moz-border-radius: 5px;_x000D_
border-radius: 5px;_x000D_
}_x000D_
div > ul { display: none; }_x000D_
div:hover > ul {display: block; background: #f9f9f9; border-top: 1px solid purple;}_x000D_
div:hover > ul > li { padding: 5px; border-bottom: 1px solid #4f4f4f;}_x000D_
div:hover > ul > li:hover { background: white;}_x000D_
div:hover > ul > li:hover > a { color: red; }
_x000D_
<div>_x000D_
Select_x000D_
<ul>_x000D_
<li><a href="#">Item 1</a></li>_x000D_
<li><a href="#">Item 2</a></li>_x000D_
<li><a href="#">Item 3</a></li>_x000D_
</ul>_x000D_
</div>
_x000D_
EDIT
Here is the question that you asked some time ago. How to style a <select> dropdown with CSS only without JavaScript? As it tells there, only in Chrome and to some extent in Firefox you can achieve what you want. Otherwise, unfortunately, there is no cross browser pure CSS solution for styling a select.
You can also install simplejson.
If you have pip (see https://pypi.python.org/pypi/pip) as your Python package manager you can install simplejson with:
pip install simplejson
This is similar to the comment of installing with easy_install, but I prefer pip to easy_install as you can easily uninstall in pip with "pip uninstall package".
Using width:auto; + display:inline-block; in css giving awesome effect.
width : auto;
display: inline-block;
Here is a very useful and lightweight javascript plugin to accomplish this: js-cookie
Cookies.set('cookieName', 'Value');
setTimeout(function(){
var cookieValue = Cookies.get('cookieName');
if(cookieValue){
console.log("Test Cookie is set!");
} else {
document.write('<p>Sorry, but cookies must be enabled</p>');
}
Cookies.remove('cookieName');
}, 1000);
Works in all browsers, accepts any character.
Might sound obvious but do you definitely have AjaxControlToolkit.dll in your bin?
Carriage return is "\r"
. Mind the double quotes!
I think you want "\r\n"
btw to put a line break in your text so it will be rendered correctly in different operating systems.
I see you have a problem. Try building your app as Release and then check out your source codes build folder. It may be called Release-iphonesimulator. Inside here will be the app. Then go to (home folder)/Library/Application Support/iPhone Simulator (if you can't find it, try pressing Command - J and choosing arrange by name). Go to an OS that has apps in it in the iPhone sim, like 4.1. In that folder there should be an Applications folder. Open that, and there should be folders with random lettering. Pick any one, and replace it with the app you have. Make sure to delete anything in the little folders!
If it doesn't work, then I'm dumbfounded.
While the previous answers may work in a fashion, I think that using BehaviorSubject is the correct way if you want to continue using observables.
Example:
this.store.subscribe(
(data:any) => {
myService.myBehaviorSubject.next(data)
}
)
In the Service:
let myBehaviorSubject = new BehaviorSubjet(value);
In component.ts:
this.myService.myBehaviorSubject.subscribe(data => this.myData = data)
I hope this helps!
Citation from here:
This is actually by design. There seems to be no good reason to inherit a static class. It has public static members that you can always access via the class name itself. The only reasons I have seen for inheriting static stuff have been bad ones, such as saving a couple of characters of typing.
There may be reason to consider mechanisms to bring static members directly into scope (and we will in fact consider this after the Orcas product cycle), but static class inheritance is not the way to go: It is the wrong mechanism to use, and works only for static members that happen to reside in a static class.
(Mads Torgersen, C# Language PM)
Other opinions from channel9
Inheritance in .NET works only on instance base. Static methods are defined on the type level not on the instance level. That is why overriding doesn't work with static methods/properties/events...
Static methods are only held once in memory. There is no virtual table etc. that is created for them.
If you invoke an instance method in .NET, you always give it the current instance. This is hidden by the .NET runtime, but it happens. Each instance method has as first argument a pointer (reference) to the object that the method is run on. This doesn't happen with static methods (as they are defined on type level). How should the compiler decide to select the method to invoke?
(littleguru)
And as a valuable idea, littleguru has a partial "workaround" for this issue: the Singleton pattern.
The standard "nop" in Python is the pass
statement:
try:
do_something()
except Exception:
pass
Using except Exception
instead of a bare except
avoid catching exceptions like SystemExit
, KeyboardInterrupt
etc.
Because of the last thrown exception being remembered in Python 2, some of the objects involved in the exception-throwing statement are being kept live indefinitely (actually, until the next exception). In case this is important for you and (typically) you don't need to remember the last thrown exception, you might want to do the following instead of pass
:
try:
do_something()
except Exception:
sys.exc_clear()
This clears the last thrown exception.
In Python 3, the variable that holds the exception instance gets deleted on exiting the except
block. Even if the variable held a value previously, after entering and exiting the except
block it becomes undefined again.
Here are the detailed steps needed to achieve this.
The existing commands can be simply run via the CLI terminal of VS-CODE. It is understood that Git is installed in the system, configured with desired username and email Id.
1) Navigate to the local project directory and create a local git repository:
git init
2) Once that is successful, click on the 'Source Control' icon on the left navbar in VS-Code.One should be able to see files ready to be commit-ed. Press on 'Commit' button, provide comments, stage the changes and commit the files. Alternatively you can run from CLI
git commit -m "Your comment"
3) Now you need to visit your GitHub account and create a new Repository. Exclude creating 'README.md', '.gitIgnore' files. Also do not add any License to the repo. Sometimes these settings cause issue while pushing in.
4) Copy the link to this newly created GitHub Repository.
5) Come back to the terminal in VS-CODE and type these commands in succession:
git remote add origin <Link to GitHub Repo> //maps the remote repo link to local git repo
git remote -v //this is to verify the link to the remote repo
git push -u origin master // pushes the commit-ed changes into the remote repo
Note: If it is the first time the local git account is trying to connect to GitHub, you may be required to enter credentials to GitHub in a separate window.
6) You can see the success message in the Terminal. You can also verify by refreshing the GitHub repo online.
Hope this helps
You should've kept that DOM ready function
$(function() {
$("#projectKey").change(function() {
alert( $('option:selected', this).text() );
});
});
The document isn't ready if you added the javascript before the elements in the DOM, you have to either use a DOM ready function or add the javascript after the elements, the usual place is right before the </body>
tag
You have to do two things:
Assuming you mean changing the icon shown on the home screen, this could easily be done by creating a widget that does exactly this. Here's an article that demonstrate how that can be accomplished for a "new messages" type application similar to iPhone:
It is worth noting that if you use the setContentOffset
approach, it may cause your table view/collection view to jump a little. I would honestly try to go about this another way. A recommendation is to use the scroll view delegate methods you are given for free.
If you are on Windows and use anaconda this worked for me:
I tried a lot of other solutions which did not work (Environment PATH Variable changes ...)
The problem can be caused by DLLs in the Windows\System32 folder (e.g. libcrypto-1_1-x64.dll or libssl-1_1-x64.dll or others) placed there by other software.
The fix was installing openSSL from https://slproweb.com/products/Win32OpenSSL.html which replaces the dlls by more recent versions.
No, but the 32-bit version runs just fine on 64-bit Windows.
Edit 7/17/2020: I cannot delete this accepted answer. It used to be good, but now it isn't. Beware really old posts, guys. I'm removing the link.
[Linqer] is a SQL to LINQ converter tool. It helps you to learn LINQ and convert your existing SQL statements.
Not every SQL statement can be converted to LINQ, but Linqer covers many different types of SQL expressions. Linqer supports both .NET languages - C# and Visual Basic.
I think the equivalent is Int64
There's a good article on the topic in the Python wiki: Why Lists Can't Be Dictionary Keys. As explained there:
What would go wrong if you tried to use lists as keys, with the hash as, say, their memory location?
It can be done without really breaking any of the requirements, but it leads to unexpected behavior. Lists are generally treated as if their value was derived from their content's values, for instance when checking (in-)equality. Many would - understandably - expect that you can use any list [1, 2]
to get the same key, where you'd have to keep around exactly the same list object. But lookup by value breaks as soon as a list used as key is modified, and for lookup by identity requires you to keep around exactly the same list - which isn't requires for any other common list operation (at least none I can think of).
Other objects such as modules and object
make a much bigger deal out of their object identity anyway (when was the last time you had two distinct module objects called sys
?), and are compared by that anyway. Therefore, it's less surprising - or even expected - that they, when used as dict keys, compare by identity in that case as well.
Assuming you have a "sampleDS" datasource definition inside your tomcat configuration, you can add following lines to your applicationContext.xml
to access the datasource using JNDI.
<jee:jndi-lookup expected-type="javax.sql.DataSource" id="springBeanIdForSampleDS" jndi-name="sampleDS"/>
You have to define the namespace and schema location for jee
prefix using:
xmlns:jee="http://www.springframework.org/schema/jee"
xsi:schemaLocation="http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.0.xsd"
Since PyYAML's yaml.load()
function parses YAML documents to native Python data structures, you can just access items by key or index. Using the example from the question you linked:
import yaml
with open('tree.yaml', 'r') as f:
doc = yaml.load(f)
To access branch1 text
you would use:
txt = doc["treeroot"]["branch1"]
print txt
"branch1 text"
because, in your YAML document, the value of the branch1
key is under the treeroot
key.
Assuming
source data range is A1:B100.
query cell is D1 (here you will input Police or Fire).
result cell is E1
Formula in E1 = VLOOKUP(D1, A1:B100, 2, FALSE)
You should take a look at the URL API that has helper methods to achieve this in it as the URLSearchParams
: https://developer.mozilla.org/en-US/docs/Web/API/URLSearchParams
This is not currently supported by all modern browsers, so don't forget to polyfill it (Polyfill available using https://qa.polyfill.io/).
If you wanna add autoplay function to it. Simply replace
this.href.replace(new RegExp("watch\\?v=", "i"), 'v/'),
with
this.href = this.href.replace(new RegExp("watch\\?v=", "i"), 'v/') + '&autoplay=1',
also you can do the same with vimeo
this.href.replace(new RegExp("([0-9])","i"),'moogaloop.swf?clip_id=$1'),
with
this.href = this.href.replace(new RegExp("([0-9])","i"),'moogaloop.swf?clip_id=$1') + '&autoplay=1',
I had the same issue and deleted the complete schema from the database, yet the issue remained.
I solved this by running the repair()
command of flyway:
flyway.repair();
Alternatively with Flyway Maven plugin:
mvn flyway:repair
Maven plugin addition into pom.xml:
<plugin>
<groupId>org.flywaydb</groupId>
<artifactId>flyway-maven-plugin</artifactId>
<version>5.2.4</version>
</plugin>
BTW: I did not find what exactly went wrong.
With Gradle (as per comment from Raf):
./gradlew flywayRepair
Swift 3 here's how i do it.
{
import UIKit
import AVFoundation
let url = Bundle.main.url(forResource: "yoursoundname", withExtension: "wav")!
do {
player = try AVAudioPlayer(contentsOf: url); guard let player = player else { return }
player.prepareToPlay()
player.play()
} catch let error as Error {
print(error)
}
}
Inside your fragment, call
this.startActivityForResult(intent, REQUEST_CODE);
where this
is referring to the fragment. Otherwise do as @Clevester said:
Fragment fragment = this;
....
fragment.startActivityForResult(intent, REQUEST_CODE);
I also had to call
super.onActivityResult(requestCode, resultCode, data);
in the parent activity's onActivityResult
to make it work.
(I adapted this answer from @Clevester's answer.)
The same problem when I export the library httclient-4.3.5 in Android Studio 0.8.6 I need include this:
packagingOptions{
exclude 'META-INF/DEPENDENCIES'
exclude 'META-INF/NOTICE'
exclude 'META-INF/NOTICE.txt'
exclude 'META-INF/LICENSE'
exclude 'META-INF/LICENSE.txt'
}
The library zip content the next jar:
commons-codec-1.6.jar
commons-logging-1.1.3.jar
fluent-hc-4.3.5.jar
httpclient-4.3.5.jar
httpclient-cache-4.3.5.jar
httpcore-4.3.2.jar
httpmime-4.3.5.jar
The preferred way is to always use the literal syntax with square brackets; its behaviour is predictable for any number of items, unlike Array
's. What's more, Array
is not a keyword, and although it is not a realistic situation, someone could easily overwrite it:
function Array() { return []; }
alert(Array(1, 2, 3)); // An empty alert box
However, the larger issue is that of consistency. Someone refactoring code could come across this function:
function fetchValue(n) {
var arr = new Array(1, 2, 3);
return arr[n];
}
As it turns out, only fetchValue(0)
is ever needed, so the programmer drops the other elements and breaks the code, because it now returns undefined
:
var arr = new Array(1);
Side note: Capitalising text using
android:inputType="textCapCharacters"
or similar seems to stop the \n
from working.
This is a business question, dependent on whether the existence of a user with a specific Guid Id is an expected normal use case for this function, or is it an anomaly that will prevent the application from successfully completing whatever function this method is providing the user object to...
If it's an "exception", in that the absence of a user with that Id will prevent the application from successfully completing whatever function it is doing, (Say we're creating an invoice for a customer we've shipped product to...), then this situation should throw an ArgumentException (or some other custom exception).
If a missing user is ok, (one of the potential normal outcomes of calling this function) then return a null....
EDIT: (to address comment from Adam in another answer)
If the application contains multiple business processes, one or more of which require a User in order to complete successfully, and one or more of which can complete successfully without a user, then the exception should be thrown further up the call stack, closer to where the business processes which require a User are calling this thread of execution. Methods between this method and that point (where the exception is being thrown) should just communicate that no user exists (null, boolean, whatever - this is an implementation detail).
But if all processes within the application require a user, I would still throw the exception in this method...
double[][]
is an array of arrays and double[,]
is a matrix. If you want to initialize an array of array, you will need to do this:
double[][] ServicePoint = new double[10][]
for(var i=0;i<ServicePoint.Length;i++)
ServicePoint[i] = new double[9];
Take in account that using arrays of arrays will let you have arrays of different lengths:
ServicePoint[0] = new double[10];
ServicePoint[1] = new double[3];
ServicePoint[2] = new double[5];
//and so on...
Have the below js inside the iframe and use ajax to submit the form.
$(function(){
$("form").submit(e){
e.preventDefault();
//Use ajax to submit the form
$.ajax({
url: this.action,
data: $(this).serialize(),
success: function(){
window.parent.$("#target").load("urlOfThePageToLoad");
});
});
});
});
Everyone seems to focus on the host part of your questions. Ports are used to be able to run several servers (for example for different purposes such as file sharing, web serving, printing, etc) from the same machine (one single IP address).
You can also make the python script run as a service using a shell script. First create a shell script to run the python script like this (scriptname arbitary name)
#!/bin/sh
script='/home/.. full path to script'
/usr/bin/python $script &
now make a file in /etc/init.d/scriptname
#! /bin/sh
PATH=/bin:/usr/bin:/sbin:/usr/sbin
DAEMON=/home/.. path to shell script scriptname created to run python script
PIDFILE=/var/run/scriptname.pid
test -x $DAEMON || exit 0
. /lib/lsb/init-functions
case "$1" in
start)
log_daemon_msg "Starting feedparser"
start_daemon -p $PIDFILE $DAEMON
log_end_msg $?
;;
stop)
log_daemon_msg "Stopping feedparser"
killproc -p $PIDFILE $DAEMON
PID=`ps x |grep feed | head -1 | awk '{print $1}'`
kill -9 $PID
log_end_msg $?
;;
force-reload|restart)
$0 stop
$0 start
;;
status)
status_of_proc -p $PIDFILE $DAEMON atd && exit 0 || exit $?
;;
*)
echo "Usage: /etc/init.d/atd {start|stop|restart|force-reload|status}"
exit 1
;;
esac
exit 0
Now you can start and stop your python script using the command /etc/init.d/scriptname start or stop.
Sample DF:
In [79]: df = pd.DataFrame(np.random.randint(5, 15, (10, 3)), columns=list('abc'))
In [80]: df
Out[80]:
a b c
0 6 11 11
1 14 7 8
2 13 5 11
3 13 7 11
4 13 5 9
5 5 11 9
6 9 8 6
7 5 11 10
8 8 10 14
9 7 14 13
present only those rows where b > 10
In [81]: df[df.b > 10]
Out[81]:
a b c
0 6 11 11
5 5 11 9
7 5 11 10
9 7 14 13
Minimums (for all columns) for the rows satisfying b > 10
condition
In [82]: df[df.b > 10].min()
Out[82]:
a 5
b 11
c 9
dtype: int32
Minimum (for the b
column) for the rows satisfying b > 10
condition
In [84]: df.loc[df.b > 10, 'b'].min()
Out[84]: 11
UPDATE: starting from Pandas 0.20.1 the .ix indexer is deprecated, in favor of the more strict .iloc and .loc indexers.
In http
nginx section (/etc/nginx/nginx.conf) add or modify:
keepalive_timeout 300s
In server
nginx section (/etc/nginx/sites-available/your-config-file.com) add these lines:
client_max_body_size 50M;
fastcgi_buffers 8 1600k;
fastcgi_buffer_size 3200k;
fastcgi_connect_timeout 300s;
fastcgi_send_timeout 300s;
fastcgi_read_timeout 300s;
In php
file in the case 127.0.0.1:9000 (/etc/php/7.X/fpm/pool.d/www.conf) modify:
request_terminate_timeout = 300
I hope help you.
I think its better you read data of text file in DataSet
Try out SqlBulkCopy - Bulk Insert into SQL from C# App
// connect to SQL
using (SqlConnection connection = new SqlConnection(connString))
{
// make sure to enable triggers
// more on triggers in next post
SqlBulkCopy bulkCopy = new SqlBulkCopy(
connection,
SqlBulkCopyOptions.TableLock |
SqlBulkCopyOptions.FireTriggers |
SqlBulkCopyOptions.UseInternalTransaction,
null
);
// set the destination table name
bulkCopy.DestinationTableName = this.tableName;
connection.Open();
// write the data in the "dataTable"
bulkCopy.WriteToServer(dataTable);
connection.Close();
}
// reset
this.dataTable.Clear();
or
after doing step 1 at the top
you can check this article for detail : Bulk Insertion of Data Using C# DataTable and SQL server OpenXML function
But its not tested with 2 million record, it will do but consume memory on machine as you have to load 2 million record and insert it.
\n didn't work for me. the \n appear in the bodytext of the email I was sending.. this is how I resolved it.
str_pad($input, 990); //so that the spaces will pad out to the 990 cut off.
Another option would be to just use the excellent corrr
package https://github.com/drsimonj/corrr and do
require(corrr)
require(dplyr)
myData %>%
select(x,y,z) %>% # or do negative or range selections here
correlate() %>%
rearrange() %>% # rearrange by correlations
shave() # Shave off the upper triangle for a cleaner result
Steps 3 and 4 are entirely optional and are just included to demonstrate the usefulness of the package.
Following the greenhoorn's answer, you can use "Extensions" like this:
public static class HttpClientExtensions
{
public static HttpClient AddTokenToHeader(this HttpClient cl, string token)
{
//int timeoutSec = 90;
//cl.Timeout = new TimeSpan(0, 0, timeoutSec);
string contentType = "application/json";
cl.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue(contentType));
cl.DefaultRequestHeaders.Add("Authorization", String.Format("Bearer {0}", token));
var userAgent = "d-fens HttpClient";
cl.DefaultRequestHeaders.Add("User-Agent", userAgent);
return cl;
}
}
And use:
string _tokenUpdated = "TOKEN";
HttpClient _client;
_client.AddTokenToHeader(_tokenUpdated).GetAsync("/api/values")
g _ goes to the last non-whitespace character.
g $ goes to the end of the screen line (when a buffer line is wrapped across multiple screen lines)
You have to change from wb to w:
def __init__(self):
self.myCsv = csv.writer(open('Item.csv', 'wb'))
self.myCsv.writerow(['title', 'link'])
to
def __init__(self):
self.myCsv = csv.writer(open('Item.csv', 'w'))
self.myCsv.writerow(['title', 'link'])
After changing this, the error disappears, but you can't write to the file (in my case). So after all, I don't have an answer?
Source: How to remove ^M
Changing to 'rb' brings me the other error: io.UnsupportedOperation: write
If you are using more animation attributes the shorthand is:
animation: bubble 2s linear 0.5s 1 normal forwards;
This gives:
bubble
animation name2s
durationlinear
timing-function0.5s
delay1
iteration-count (can be 'infinite
')normal
directionforwards
fill-mode (set 'backwards' if you want to have compatibility to use the end position as the final state[this is to support browsers that has animations turned off]{and to answer only the title, and not your specific case})TextView forgot_pswrd = (TextView) findViewById(R.id.ForgotPasswordText);
forgot_pswrd.setOnTouchListener(this);
LinearLayout.LayoutParams llp = new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
llp.setMargins(50, 0, 0, 0); // llp.setMargins(left, top, right, bottom);
forgot_pswrd.setLayoutParams(llp);
I did this and it worked perfectly. Maybe as you are giving the value in -ve, that's why your code is not working. You just put this code where you are creating the reference of the view.
using (WebClient client = new WebClient())
{
byte[] response =
client.UploadValues("http://dork.com/service", new NameValueCollection()
{
{ "home", "Cosby" },
{ "favorite+flavor", "flies" }
});
string result = System.Text.Encoding.UTF8.GetString(response);
}
You will need these includes:
using System;
using System.Collections.Specialized;
using System.Net;
If you're insistent on using a static method/class:
public static class Http
{
public static byte[] Post(string uri, NameValueCollection pairs)
{
byte[] response = null;
using (WebClient client = new WebClient())
{
response = client.UploadValues(uri, pairs);
}
return response;
}
}
Then simply:
var response = Http.Post("http://dork.com/service", new NameValueCollection() {
{ "home", "Cosby" },
{ "favorite+flavor", "flies" }
});
check that entity is defined in hibernate.cfg.xml or not.
Fragment lifecycle is very complex and full of bugs, try to add:
Activity activity = getActivity();
if (isAdded() && activity != null) {
...
}
Use properties file. Here is a good start: http://www.mkyong.com/java/java-properties-file-examples/
A version of Cheeso solution with reverse sorting, I also removed the ternary expressions for lack of clarity (but this is personal taste).
function(prop, reverse) {
return function(a, b) {
if (typeof a[prop] === 'number') {
return (a[prop] - b[prop]);
}
if (a[prop] < b[prop]) {
return reverse ? 1 : -1;
}
if (a[prop] > b[prop]) {
return reverse ? -1 : 1;
}
return 0;
};
};
I had almost the same as Jesper, only I reused the webclient and disposed it correctly. Also I cleaned up some responses by removing the extra \n at the end.
private static IPAddress GetExternalIp () {
using (WebClient client = new WebClient()) {
List<String> hosts = new List<String>();
hosts.Add("https://icanhazip.com");
hosts.Add("https://api.ipify.org");
hosts.Add("https://ipinfo.io/ip");
hosts.Add("https://wtfismyip.com/text");
hosts.Add("https://checkip.amazonaws.com/");
hosts.Add("https://bot.whatismyipaddress.com/");
hosts.Add("https://ipecho.net/plain");
foreach (String host in hosts) {
try {
String ipAdressString = client.DownloadString(host);
ipAdressString = ipAdressString.Replace("\n", "");
return IPAddress.Parse(ipAdressString);
} catch {
}
}
}
return null;
}
I've seen many of the proposed solutions, but none were quite what I was hoping.
Here's my best hack at this, where the color is transparent, the background and the top text-shadow are the same color with varying opacities, simulating the mask, and the second text-shadow is a darker, more saturated version of the color you actually want (pretty easy to do with HSLA).
(btw, text and styling based upon a dupe thread's OP)
__new__
is static class method, while __init__
is instance method.
__new__
has to create the instance first, so __init__
can initialize it. Note that __init__
takes self
as parameter. Until you create instance there is no self
.
Now, I gather, that you're trying to implement singleton pattern in Python. There are a few ways to do that.
Also, as of Python 2.6, you can use class decorators.
def singleton(cls):
instances = {}
def getinstance():
if cls not in instances:
instances[cls] = cls()
return instances[cls]
return getinstance
@singleton
class MyClass:
...
The options discussed above won't work because they are not part of the CSS
specification (it is jQuery
extension). Having spent 2-3 days digging around for information, I found that the only way to select the Text of the selected option from the drop down is:
{ $("select", id:"Some_ID").find("option[selected='selected']")}
Refer to additional notes below:
Because :selected is a jQuery
extension and not part of the CSS
specification, queries using :selected cannot take advantage of the performance boost provided by the native DOM querySelectorAll() method. To achieve the best performance when using :selected to select elements, first select the elements using a pure CSS
selector, then use .filter(":selected")
. (copied from: http://api.jquery.com/selected-selector/)
Use the WScript.Shell instead, because it has a waitOnReturn
option:
Dim wsh As Object
Set wsh = VBA.CreateObject("WScript.Shell")
Dim waitOnReturn As Boolean: waitOnReturn = True
Dim windowStyle As Integer: windowStyle = 1
wsh.Run "C:\folder\runbat.bat", windowStyle, waitOnReturn
(Idea copied from Wait for Shell to finish, then format cells - synchronously execute a command)
I've written a personal library that allows you to order by multiple values, with all the ordering done on the server.
Querybase takes in a Firebase Database Reference and an array of fields you wish to index on. When you create new records it will automatically handle the generation of keys that allow for multiple querying. The caveat is that it only supports straight equivalence (no less than or greater than).
const databaseRef = firebase.database().ref().child('people');
const querybaseRef = querybase.ref(databaseRef, ['name', 'age', 'location']);
// Automatically handles composite keys
querybaseRef.push({
name: 'David',
age: 27,
location: 'SF'
});
// Find records by multiple fields
// returns a Firebase Database ref
const queriedDbRef = querybaseRef
.where({
name: 'David',
age: 27
});
// Listen for realtime updates
queriedDbRef.on('value', snap => console.log(snap));
textarea, input { outline: none; }
where datetime_column > curdate() - interval (dayofmonth(curdate()) - 1) day - interval 6 month
where datetime_column > dateadd(m, -6, getdate() - datepart(d, getdate()) + 1)
There is an article here that describes your problem
http://www.hyperarts.com/blog/facebook-fan-pages-content-for-fans-only-static-fbml/
<fb:visible-to-connection>
Fans will see this content.
<fb:else>
Non-fans will see this content.
</fb:else>
</fb:visible-to-connection>
As the data you show are factors, it complicates things a little bit. @diliop's Answer approaches the problem by converting to nm
to a character variable. To get back to the original factors a further step is required.
An alternative is to manipulate the levels of the factor in place.
> lev <- with(junk, levels(nm))
> lev[lev == "B"] <- "b"
> junk2 <- within(junk, levels(nm) <- lev)
> junk2
nm val
1 A a
2 b b
3 C c
4 D d
5 A e
6 b f
7 C g
8 D h
9 A i
10 b j
11 C k
12 D l
That is quite simple and I often forget that there is a replacement function for levels()
.
Edit: As noted by @Seth in the comments, this can be done in a one-liner, without loss of clarity:
within(junk, levels(nm)[levels(nm) == "B"] <- "b")
<asp:LinkButton ID="LnkBtn" runat="server" Text="Text" RowIndex='<%# Container.DisplayIndex %>' CommandArgument='<%# Eval("??") %>' OnClick="LnkBtn_Click" />
inside your event handler :
Protected Sub LnkBtn_Click(ByVal sender As Object, ByVal e As EventArgs)
dim rowIndex as integer = sender.Attributes("RowIndex")
'Here you can use also the command argument for any other value.
End Sub
Is sku
just a property of the Product
model? If so:
$products = Product::whereOwnerAndStatus($owner, 0)->take($count)->get();
foreach ($products as $product ) {
// Access $product->sku here...
}
Or is sku
a relationship to another model? If that is the case, then, as long as your relationship is setup properly, you code should work.
Que:Is there a way to programmatically scroll a scroll view to a specific edittext?
Ans:Nested scroll view in recyclerview last position added record data.
adapter.notifyDataSetChanged();
nested_scroll.setScrollY(more Detail Recycler.getBottom());
Is there a way to programmatically scroll a scroll view to a specific edit text?
As I too am constantly being let down by cross-browser CSS, I'd like to offer a JQuery solution here. This takes the height of each image's parent div, divide it by two and set it as a top margin between the image and the div:
$('div img').each(function() {
m = Math.floor(($(this).parent('div').height() - $(this).height())/2);
mp = m+"px";
$(this).css("margin-top",mp);
});
SELECT * FROM news WHERE date > DATEADD(d,-1,GETDATE())
I though I'd add one more way. In my case I supply this to com.hazelcast.config.XmlConfigBuilder
which only needs java.util.Properties
to resolve some properties inside the Hazelcast XML configuration file, i.e. it only calls getProperty(String)
method. So, this allowed me to do what I needed:
@RequiredArgsConstructor
public class SpringReadOnlyProperties extends Properties {
private final org.springframework.core.env.Environment delegate;
@Override
public String getProperty(String key) {
return delegate.getProperty(key);
}
@Override
public String getProperty(String key, String defaultValue) {
return delegate.getProperty(key, defaultValue);
}
@Override
public synchronized String toString() {
return getClass().getName() + "{" + delegate + "}";
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
if (!super.equals(o)) return false;
SpringReadOnlyProperties that = (SpringReadOnlyProperties) o;
return delegate.equals(that.delegate);
}
@Override
public int hashCode() {
return Objects.hash(super.hashCode(), delegate);
}
private void throwException() {
throw new RuntimeException("This method is not supported");
}
//all methods below throw the exception
* override all methods *
}
P.S. I ended up not using this specifically for Hazelcast because it only resolves properties for XML file but not at runtime. Since I also use Spring, I decided to go with a custom org.springframework.cache.interceptor.AbstractCacheResolver#getCacheNames
. This resolves properties for both situations, at least if you use properties in cache names.
You can use array.slice(0,1) // First index is removed and array is returned.
A column with default value:
CREATE TABLE <TableName>(
...
<ColumnName> <Type> DEFAULT <DefaultValue>
...
)
<DefaultValue>
is a placeholder for a:
(
expression )
Examples:
Count INTEGER DEFAULT 0,
LastSeen TEXT DEFAULT (datetime('now'))
use:
$scope.users.length;
Instead of:
$scope.users.lenght;
And next time "spell-check" your code.
It would still make sense to create your zip code field as a zerofilled unsigned integer field.
CREATE TABLE xxx (
zipcode INT(5) ZEROFILL UNSIGNED,
...
)
That way mysql takes care of the padding for you.
You can have - characters in your images. Assume you have a local image (not a local registry) named centos-base-image with tag 7.3.1611.
docker version
Client:
Version: 1.12.6
API version: 1.24
Package version: docker-common-1.12.6-16.el7.centos.x86_64
Go version: go1.7.4
Server:
Version: 1.12.6
API version: 1.24
Package version: docker-common-1.12.6-16.el7.centos.x86_64
Go version: go1.7.4
docker images
REPOSITORY TAG
centos-base-image 7.3.1611
Dockerfile
FROM centos-base-image:7.3.1611
RUN yum -y install epel-release libaio bc flex
Result
Sending build context to Docker daemon 315.9 MB
Step 1 : FROM centos-base-image:7.3.1611
---> c4d84e86782e
Step 2 : RUN yum -y install epel-release libaio bc flex
---> Running in 36d8abd0dad9
...
In the example above FROM
is fetching your local image, you can provide additional instructions to fetch an image from your custom registry (e.g. FROM localhost:5000/my-image:with.tag
). See https://docs.docker.com/engine/reference/commandline/pull/#pull-from-a-different-registry and https://docs.docker.com/registry/#tldr
Finally, if your image is not being resolved when providing a name, try adding a tag to the image when you create it
This GitHub thread describes a similar issue of not finding local images by name.
By omitting a specific tag, docker will look for an image tagged "latest", so either create an image with the :latest tag, or change your FROM
You should use POST for partial updates.
To update fields for customer 123, make a POST to /customer/123.
If you want to update just the status, you could also PUT to /customer/123/status.
Generally, GET requests should not have any side effects, and PUT is for writing/replacing the entire resource.
This follows directly from HTTP, as seen here: http://en.wikipedia.org/wiki/HTTP_PUT#Request_methods
One solution you could use is to assign a more generalized class to any div you want the click event handler bound to.
For example:
HTML:
<body>
<div id="dog" class="selected" data-selected="false">dog</div>
<div id="cat" class="selected" data-selected="true">cat</div>
<div id="mouse" class="selected" data-selected="false">mouse</div>
<div class="dog"><img/></div>
<div class="cat"><img/></div>
<div class="mouse"><img/></div>
</body>
JS:
$( ".selected" ).each(function(index) {
$(this).on("click", function(){
// For the boolean value
var boolKey = $(this).data('selected');
// For the mammal value
var mammalKey = $(this).attr('id');
});
});
Yes, using custom tags. Example in Python, making the !join
tag join strings in an array:
import yaml
## define custom tag handler
def join(loader, node):
seq = loader.construct_sequence(node)
return ''.join([str(i) for i in seq])
## register the tag handler
yaml.add_constructor('!join', join)
## using your sample data
yaml.load("""
paths:
root: &BASE /path/to/root/
patha: !join [*BASE, a]
pathb: !join [*BASE, b]
pathc: !join [*BASE, c]
""")
Which results in:
{
'paths': {
'patha': '/path/to/root/a',
'pathb': '/path/to/root/b',
'pathc': '/path/to/root/c',
'root': '/path/to/root/'
}
}
The array of arguments to !join
can have any number of elements of any data type, as long as they can be converted to string, so !join [*a, "/", *b, "/", *c]
does what you would expect.
The resolution to this problem for me, was to notify the sender that he did use the Public key that I sent them but rather someone elses. You should see the key that they used. Tell them to use the correct one.
Follow the standard Y-m-d format, if you are using PHP
<input type="date" value="<?php echo date("Y-m-d"); ?>">
I sometimes have this same problem. VSCode will just suddenly lose it's mind and completely ignore any indentation setting I tell it, even though it's been indenting the same file just fine all day.
I have editor.tabSize
set to 2 (as well as editor.formatOnSave
set to true). When VSCode messes up a file, I use the options at the bottom of the editor to change indentation type and size, hoping something will work, but VSCode insists on actually using an indent size of 4.
The fix? Restart VSCode. It should come back with the indent status showing something wrong (in my case, 4). For me, I had to change the setting and then save for it to actually make the change, but that's probably because of my editor.formatOnSave
setting.
I haven't figured out why it happens, but for me it's usually when I'm editing a nested object in a JS file. It will suddenly do very strange indentation within the object, even though I've been working in that file for a while and it's been indenting just fine.
Two years later (Found this on Google, so for anyone else)... As has been mentioned above, you don't need to select anything. These three lines:
Workbooks(File).Worksheets(SheetData).Range("A1").Select
Workbooks(File).Worksheets(SheetData).Range(Selection, Selection.End(xlToRight)).Select
Workbooks(File).Worksheets(SheetData).Selection.Copy ActiveWorkbook.Sheets(sheetName).Cells(1, 1)
Can be replaced with
Workbooks(File).Worksheets(SheetData).Range(Workbooks(File).Worksheets(SheetData). _
Range("A1"), Workbooks(File).Worksheets(SheetData).Range("A1").End(xlToRight)).Copy _
Destination:=ActiveWorkbook.Sheets(sheetName).Cells(1, 1)
This should get around the select error.
Most of the answers even the most voted answers didn't do the job properly, they seem to work and the builds work however, a closer look at the file structure and references will show you that not much was done. IntelliJ actually does this whole process automatically.
1) Go to Project Tab and make sure Packages is the active Tab in the drop down like so:
find your com.example package (note test as in com.example.test is not there) right-click and choose Refactor->Rename...
It will issue a warning that multiple directories... (which is actually the desired effect), click on Rename package.
Input the new package name and Refactor...
It will do searches and show you refactoring results.
Click on the Do Refactor button and it will do everything and even rename the folders and files involved... every reference is corrected to this new name.
2) Then Finally change the AndroidManifest.xml file
:)
A combined solution from different answers is:
new Handler().postDelayed(() -> {
myViewPager.setCurrentItem(position, true);
myTabLayout.setScrollPosition(position, 0f, true);
},
100);
import urllib, urllib2, cookielib
username = 'myuser'
password = 'mypassword'
cj = cookielib.CookieJar()
opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj))
login_data = urllib.urlencode({'username' : username, 'j_password' : password})
opener.open('http://www.example.com/login.php', login_data)
resp = opener.open('http://www.example.com/hiddenpage.php')
print resp.read()
resp.read()
is the straight html of the page you want to open, and you can use opener
to view any page using your session cookie.
what about this simple inArray function:
Function isInArray(ByRef stringToBeFound As String, ByRef arr As Variant) As Boolean
For Each element In arr
If element = stringToBeFound Then
isInArray = True
Exit Function
End If
Next element
End Function
A normal math answer.
Understanding that a floating point number is implemented as some bits representing the exponent and the rest, most for the digits (in the binary system), one has the following situation:
With a high exponent, say 10²³ if the least significant bit is changed, a large difference between two adjacent distinghuishable numbers appear. Furthermore the base 2 decimal point makes that many base 10 numbers can only be approximated; 1/5, 1/10 being endless numbers.
So in general: floating point numbers should not be used if you care about significant digits. For monetary amounts with calculation, e,a, best use BigDecimal.
For physics floating point doubles are adequate, floats almost never. Furthermore the floating point part of processors, the FPU, can even use a bit more precission internally.
maps.google.com has a navigation service which can provide you route information in KML format.
To get kml file we need to form url with start and destination locations:
public static String getUrl(double fromLat, double fromLon,
double toLat, double toLon) {// connect to map web service
StringBuffer urlString = new StringBuffer();
urlString.append("http://maps.google.com/maps?f=d&hl=en");
urlString.append("&saddr=");// from
urlString.append(Double.toString(fromLat));
urlString.append(",");
urlString.append(Double.toString(fromLon));
urlString.append("&daddr=");// to
urlString.append(Double.toString(toLat));
urlString.append(",");
urlString.append(Double.toString(toLon));
urlString.append("&ie=UTF8&0&om=0&output=kml");
return urlString.toString();
}
Next you will need to parse xml (implemented with SAXParser) and fill data structures:
public class Point {
String mName;
String mDescription;
String mIconUrl;
double mLatitude;
double mLongitude;
}
public class Road {
public String mName;
public String mDescription;
public int mColor;
public int mWidth;
public double[][] mRoute = new double[][] {};
public Point[] mPoints = new Point[] {};
}
Network connection is implemented in different ways on Android and Blackberry, so you will have to first form url:
public static String getUrl(double fromLat, double fromLon,
double toLat, double toLon)
then create connection with this url and get InputStream.
Then pass this InputStream and get parsed data structure:
public static Road getRoute(InputStream is)
Full source code RoadProvider.java
class MapPathScreen extends MainScreen {
MapControl map;
Road mRoad = new Road();
public MapPathScreen() {
double fromLat = 49.85, fromLon = 24.016667;
double toLat = 50.45, toLon = 30.523333;
String url = RoadProvider.getUrl(fromLat, fromLon, toLat, toLon);
InputStream is = getConnection(url);
mRoad = RoadProvider.getRoute(is);
map = new MapControl();
add(new LabelField(mRoad.mName));
add(new LabelField(mRoad.mDescription));
add(map);
}
protected void onUiEngineAttached(boolean attached) {
super.onUiEngineAttached(attached);
if (attached) {
map.drawPath(mRoad);
}
}
private InputStream getConnection(String url) {
HttpConnection urlConnection = null;
InputStream is = null;
try {
urlConnection = (HttpConnection) Connector.open(url);
urlConnection.setRequestMethod("GET");
is = urlConnection.openInputStream();
} catch (IOException e) {
e.printStackTrace();
}
return is;
}
}
See full code on J2MEMapRouteBlackBerryEx on Google Code
public class MapRouteActivity extends MapActivity {
LinearLayout linearLayout;
MapView mapView;
private Road mRoad;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mapView = (MapView) findViewById(R.id.mapview);
mapView.setBuiltInZoomControls(true);
new Thread() {
@Override
public void run() {
double fromLat = 49.85, fromLon = 24.016667;
double toLat = 50.45, toLon = 30.523333;
String url = RoadProvider
.getUrl(fromLat, fromLon, toLat, toLon);
InputStream is = getConnection(url);
mRoad = RoadProvider.getRoute(is);
mHandler.sendEmptyMessage(0);
}
}.start();
}
Handler mHandler = new Handler() {
public void handleMessage(android.os.Message msg) {
TextView textView = (TextView) findViewById(R.id.description);
textView.setText(mRoad.mName + " " + mRoad.mDescription);
MapOverlay mapOverlay = new MapOverlay(mRoad, mapView);
List<Overlay> listOfOverlays = mapView.getOverlays();
listOfOverlays.clear();
listOfOverlays.add(mapOverlay);
mapView.invalidate();
};
};
private InputStream getConnection(String url) {
InputStream is = null;
try {
URLConnection conn = new URL(url).openConnection();
is = conn.getInputStream();
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return is;
}
@Override
protected boolean isRouteDisplayed() {
return false;
}
}
See full code on J2MEMapRouteAndroidEx on Google Code
It's usually based on significant figures of both the exponent and significand in base 2, not base 10. From what I can tell in the C99 standard, however, there is no specified precision for floats and doubles (other than the fact that 1 and 1 + 1E-5
/ 1 + 1E-7
are distinguishable [float
and double
repsectively]). However, the number of significant figures is left to the implementer (as well as which base they use internally, so in other words, an implementation could decide to make it based on 18 digits of precision in base 3). [1]
If you need to know these values, the constants FLT_RADIX
and FLT_MANT_DIG
(and DBL_MANT_DIG
/ LDBL_MANT_DIG
) are defined in float.h.
The reason it's called a double
is because the number of bytes used to store it is double the number of a float (but this includes both the exponent and significand). The IEEE 754 standard (used by most compilers) allocate relatively more bits for the significand than the exponent (23 to 9 for float
vs. 52 to 12 for double
), which is why the precision is more than doubled.
1: Section 5.2.4.2.2 ( http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1256.pdf )
Windows Firewall was creating this error for me. SMTP was trying to post to GMAIL at port 587. Adding port 587 to the Outbound rule [Outbound HTTP/SMTP/RDP] resolved the issue.
A python string is a list of characters. You can iterate over it right now!
justdigits = ""
for char in string:
if char.isdigit():
justdigits += str(char)
In Python 2.x, just use the ord
and chr
functions:
>>> ord('c')
99
>>> ord('c') + 1
100
>>> chr(ord('c') + 1)
'd'
>>>
Python 3.x makes this more organized and interesting, due to its clear distinction between bytes and unicode. By default, a "string" is unicode, so the above works (ord
receives Unicode chars and chr
produces them).
But if you're interested in bytes (such as for processing some binary data stream), things are even simpler:
>>> bstr = bytes('abc', 'utf-8')
>>> bstr
b'abc'
>>> bstr[0]
97
>>> bytes([97, 98, 99])
b'abc'
>>> bytes([bstr[0] + 1, 98, 99])
b'bbc'
To see database name, startup;
then type show parameter db_name;
In my case the path is not set in VPATH, after added the error gone.
Does c# have its own version of the java "synchronized" keyword?
No. In C#, you explicitly lock
resources that you want to work on synchronously across asynchronous threads. lock
opens a block; it doesn't work on method level.
However, the underlying mechanism is similar since lock
works by invoking Monitor.Enter
(and subsequently Monitor.Exit
) on the runtime. Java works the same way, according to the Sun documentation.
There's no history in the database itself, if you're using psql you can use "\s" to see your command history there.
You can get future queries or other types of operations into the log files by setting log_statement in the postgresql.conf file. What you probably want instead is log_min_duration_statement, which if you set it to 0 will log all queries and their durations in the logs. That can be helpful once your apps goes live, if you set that to a higher value you'll only see the long running queries which can be helpful for optimization (you can run EXPLAIN ANALYZE on the queries you find there to figure out why they're slow).
Another handy thing to know in this area is that if you run psql and tell it "\timing", it will show how long every statement after that takes. So if you have a sql file that looks like this:
\timing
select 1;
You can run it with the right flags and see each statement interleaved with how long it took. Here's how and what the result looks like:
$ psql -ef test.sql
Timing is on.
select 1;
?column?
----------
1
(1 row)
Time: 1.196 ms
This is handy because you don't need to be database superuser to use it, unlike changing the config file, and it's easier to use if you're developing new code and want to test it out.