Simple Steps...
ALTER TABLE t_name1 ADD FOREIGN KEY (column_name) REFERENCES t_name2(column_name)
Make your life easier, install Spyder. Open your file then run it (click the green arrow). Afterwards your hello()
method is defined and known to the IPython Console, so you can call it from the console.
If you want to retrieve the key's value if it exists, you can also use
try:
value = a[key]
except KeyError:
# Key is not present
pass
If you want to retrieve a default value when the key does not exist, use
value = a.get(key, default_value)
.
If you want to set the default value at the same time in case the key does not exist, use
value = a.setdefault(key, default_value)
.
Use time
Let's say you have the initial dates as strings like these:
date1 = "31/12/2015"
date2 = "01/01/2016"
You can do the following:
newdate1 = time.strptime(date1, "%d/%m/%Y")
and newdate2 = time.strptime(date2, "%d/%m/%Y")
to convert them to python's date format. Then, the comparison is obvious:
newdate1 > newdate2
will return False
newdate1 < newdate2
will return True
I didn't like the slide effect either. To fix this all you have to do is make the the top
attribute the same for both .modal.fade and modal.fade.in. You can take off the top 0.3s ease-out
in the transitions too, but it doesn't hurt to leave it in. I like this approach because the fade in/out works, it just kills the slide.
.modal.fade {
top: 20%;
-webkit-transition: opacity 0.3s linear;
-moz-transition: opacity 0.3s linear;
-o-transition: opacity 0.3s linear;
transition: opacity 0.3s linear;
}
.modal.fade.in {
top: 20%;
}
If you're looking for a bootstrap 3 answer, look here
First of all: you should always import mockito static, this way the code will be much more readable (and intuitive):
import static org.mockito.Mockito.*;
There are actually many ways to achieve this, however it's (arguably) cleaner to use the
verify(yourMock, times(0)).someMethod();
method all over your tests, when on other Tests you use it to assert a certain amount of executions like this:
verify(yourMock, times(5)).someMethod();
Alternatives are:
verify(yourMock, never()).someMethod();
Alternatively - when you really want to make sure a certain mocked Object is actually NOT called at all - you can use:
verifyZeroInteractions(yourMock)
This is a Java implementation in O(n^2). I just did not use Binary Search to find the smallest element in S, which is >= than X. I just used a for loop. Using Binary Search would make the complexity at O(n logn)
public static void olis(int[] seq){
int[] memo = new int[seq.length];
memo[0] = seq[0];
int pos = 0;
for (int i=1; i<seq.length; i++){
int x = seq[i];
if (memo[pos] < x){
pos++;
memo[pos] = x;
} else {
for(int j=0; j<=pos; j++){
if (memo[j] >= x){
memo[j] = x;
break;
}
}
}
//just to print every step
System.out.println(Arrays.toString(memo));
}
//the final array with the LIS
System.out.println(Arrays.toString(memo));
System.out.println("The length of lis is " + (pos + 1));
}
=>
is used in associative array key value assignment. Take a look at:
http://php.net/manual/en/language.types.array.php.
->
is used to access an object method or property. Example: $obj->method()
.
If you are happy to use an external library, the org.apache.commons.codec.binary.Hex
class has an encodeHex
method which takes a byte[]
and returns a char[]
. This methods is MUCH faster than the format option, and encapsulates the details of the conversion. Also comes with a decodeHex
method for the opposite conversion.
Is Java smart enough to skip checking bool2 and bool2 if bool1 was evaluated to false?
Its not a matter of being smart, its a requirement specified in the language. Otherwise you couldn't write expressions like.
if(s != null && s.length() > 0)
or
if(s == null || s.length() == 0)
BTW if you use &
and |
it will always evaluate both sides of the expression.
If you are getting 500 - Internal server error that means you don't have permission to set these values by .htaccess. You have to contact your web server providers and ask to set AllowOverride Options
for your host or to put these lines in their virtual host configuration file.
you can add infinite borders using box-shadow using css3 suppose you want to apply multiple borders on one div then code is like:
div {
border-radius: 4px;
/* #1 */
border: 5px solid hsl(0, 0%, 40%);
/* #2 */
padding: 5px;
background: hsl(0, 0%, 20%);
/* #3 */
outline: 5px solid hsl(0, 0%, 60%);
/* #4 AND INFINITY!!! (CSS3 only) */
box-shadow:
0 0 0 10px red,
0 0 0 15px orange,
0 0 0 20px yellow,
0 0 0 25px green,
0 0 0 30px blue;
}
Use:
<!-- This is a comment for an HTML page and it will not display in the browser -->
For more information, I think 3 On SGML and HTML may help you.
In Genymotion just drag and drop the *.apk file in to the emulator and it will automatically installs and runs.
You're setting overflow: hidden
. This will hide anything that's too large for the <div>
, meaning scrollbars won't be shown. Give your <div>
an explicit width and/or height, and change overflow
to auto
:
.scroll {
width: 200px;
height: 400px;
overflow: scroll;
}
If you only want to show a scrollbar if the content is longer than the <div>
, change overflow
to overflow: auto
. You can also only show one scrollbar by using overflow-y
or overflow-x
.
easiest way ta make java leap year and more clear to understandenter code here
import java.util.Scanner;
class que19{
public static void main(String[] args) {
Scanner input=new Scanner(System.in);
double a;
System.out.println("enter the year here ");
a=input.nextDouble();
if ((a % 4 ==0 ) && (a%100!=0) || (a%400==0)) {
System.out.println("leep year");
}
else {
System.out.println("not a leap year");
}
}
}
Here is syntax for showing hours and minutes for a field coming out of a SELECT statement. In this example, the SQL field is named "UpdatedOnAt" and is a DateTime. Tested with MS SQL 2014.
SELECT Format(UpdatedOnAt ,'hh:mm') as UpdatedOnAt from MyTable
I like the format that shows the day of the week as a 3-letter abbreviation, and includes the seconds:
SELECT Format(UpdatedOnAt ,'ddd hh:mm:ss') as UpdatedOnAt from MyTable
The "as UpdatedOnAt" suffix is optional. It gives you a column heading equal tot he field you were selecting to begin with.
This is the code as 2017:
<i class="fa fa-facebook-square"></i>
<a href="#" onclick="window.open('https://www.facebook.com/sharer/sharer.php?u='+encodeURIComponent(location.href),'facebook-share-dialog','width=626,height=436');return false;">Share on Facebook</a>
Facebook now takes all data from OG metatags.
NOTE: This code assumes you have OG metatags on in site's code.
As @qiao said, you can't use __dirname
in the node repl. However, if you need need this value in the console, you can use path.resolve()
or path.dirname()
. Although, path.dirname()
will just give you a "." so, probably not that helpful. Be sure to require('path')
.
The least complicated way I have found to revert a branch to any particular commit, where you can't change the history, is to:
Such as:
echo 'ref: refs/heads/example' > .git/HEAD
If you then do git status
, you should see all the changes between the branch you're on and the one you wish to revert to.
If everything looks good, you can commit. You can also use git diff revert
..example to ensure that it's the same.
Use Counter
>>> from collections import Counter
>>> MyList = ["a", "b", "a", "c", "c", "a", "c"]
>>> c = Counter(MyList)
>>> c
Counter({'a': 3, 'c': 3, 'b': 1})
byte[] Take_Byte_Arr_From_Int(Int64 Source_Num)
{
Int64 Int64_Num = Source_Num;
byte Byte_Num;
byte[] Byte_Arr = new byte[8];
for (int i = 0; i < 8; i++)
{
if (Source_Num > 255)
{
Int64_Num = Source_Num / 256;
Byte_Num = (byte)(Source_Num - Int64_Num * 256);
}
else
{
Byte_Num = (byte)Int64_Num;
Int64_Num = 0;
}
Byte_Arr[i] = Byte_Num;
Source_Num = Int64_Num;
}
return (Byte_Arr);
}
With the new (Android 6.0) fingerprint hardware and API you can do it as in this github sample application.
if (@available(iOS 11.0, *)) {
self.navigationController.navigationItem.largeTitleDisplayMode = UINavigationItemLargeTitleDisplayModeAlways;
self.navigationController.navigationBar.prefersLargeTitles = true;
// Change Color
self.navigationController.navigationBar.largeTitleTextAttributes = @{NSForegroundColorAttributeName: [UIColor whiteColor]};
} else {
// Fallback on earlier versions
}
There's a really nice easy way to do this in Macintosh OsX. A fellow has made a quicklook plugin (command-space) that renders .mat formats so you can view the variables inside etc. Quite useful! https://github.com/jaketmp/matlab-quicklook/releases
Usually that problem is that in the last iteration you have an empty object or undefine object. use console.log() inside you cicle to check that this doent happend.
Sometimes a prototype in some place add an extra element.
Because (amongst other reasons) it's much harder to ensure the input data is sanitized. If you use parametrized queries, as one does with PDO or mysqli you can entirely avoid the risk.
As an example, someone could use "enhzflep); drop table users"
as a username. The old functions will allow executing multiple statements per query, so something like that nasty bugger can delete a whole table.
If one were to use PDO of mysqli, the user-name would end-up being "enhzflep); drop table users"
.
See bobby-tables.com.
Using FileStream + StreamWriter I know it's possible to create massive files in little time (less than 1 min 30 seconds). I generate three files totaling 700+ megabytes from one file using that technique.
Your primary problem with the code you're using is that you are opening a file every time. That is creating file I/O overhead.
If you knew the names of the files you would be generating ahead of time, you could extract the File.OpenWrite into a separate method; it will increase the speed. Without seeing the code that determines how you are splitting the files, I don't think you can get much faster.
For transparency, this is also mandatory: renderer = new THREE.WebGLRenderer( { alpha: true } )
via Transparent background with three.js
A mutable object has to have at least a method able to mutate the object. For example, the list
object has the append
method, which will actually mutate the object:
>>> a = [1,2,3]
>>> a.append('hello') # `a` has mutated but is still the same object
>>> a
[1, 2, 3, 'hello']
but the class float
has no method to mutate a float object. You can do:
>>> b = 5.0
>>> b = b + 0.1
>>> b
5.1
but the =
operand is not a method. It just make a bind between the variable and whatever is to the right of it, nothing else. It never changes or creates objects. It is a declaration of what the variable will point to, since now on.
When you do b = b + 0.1
the =
operand binds the variable to a new float, wich is created with te result of 5 + 0.1
.
When you assign a variable to an existent object, mutable or not, the =
operand binds the variable to that object. And nothing more happens
In either case, the =
just make the bind. It doesn't change or create objects.
When you do a = 1.0
, the =
operand is not wich create the float, but the 1.0
part of the line. Actually when you write 1.0
it is a shorthand for float(1.0)
a constructor call returning a float object. (That is the reason why if you type 1.0
and press enter you get the "echo" 1.0
printed below; that is the return value of the constructor function you called)
Now, if b
is a float and you assign a = b
, both variables are pointing to the same object, but actually the variables can't comunicate betweem themselves, because the object is inmutable, and if you do b += 1
, now b
point to a new object, and a
is still pointing to the oldone and cannot know what b
is pointing to.
but if c
is, let's say, a list
, and you assign a = c
, now a
and c
can "comunicate", because list
is mutable, and if you do c.append('msg')
, then just checking a
you get the message.
(By the way, every object has an unique id number asociated to, wich you can get with id(x)
. So you can check if an object is the same or not checking if its unique id has changed.)
private void Form1_KeyPress(object sender, KeyPressEventArgs e)
{
if(e.KeyChar == 'm')
this.WindowState = FormWindowState.Minimized;
}
Using Boost.Text, which will work for Unicode text
boost::text::text t = "Hello World";
boost::text::text uppered;
boost::text::to_title(t, std::inserter(uppered, uppered.end()));
std::string newstr = uppered.extract();
Read the file line by line and increment a counter for each line until you have read the entire file.
It seems IHostingEnvironment has been replaced by IHostEnvironment (and a few others). You should be able to change the interface type in your code and everything will work as it used to :-)
You can find more information about the changes at this link on GitHub https://github.com/aspnet/AspNetCore/issues/7749
EDIT There is also an additional interface IWebHostEnvironment that can be used in ASP.NET Core applications. This is available in the Microsoft.AspNetCore.Hosting namespace.
If you want to take just two numbers after comma you can use the Math Class that give you the round function for example :
float value = 92.197354542F;
value = (float)System.Math.Round(value,2); // value = 92.2;
Hope this Help
Cheers
Note that openpyxl does not have a large toolbox for manipulating and editing images. Xlsxwriter has methods for images, but on the other hand cannot import existing worksheets...
I have found that this works for rows... I'm sure there's a way to do it for columns...
import openpyxl
oxl = openpyxl.load_workbook('File Loction Here')
xl = oxl.['SheetName']
x=0
col = "A"
row = x
while (row <= 100):
y = str(row)
cell = col + row
xl[cell] = x
row = row + 1
x = x + 1
To give a little more flexibility I would add the next function to my repository:
public function findByNot($field, $value)
{
$qb = $this->createQueryBuilder('a');
$qb->where($qb->expr()->not($qb->expr()->eq('a.'.$field, '?1')));
$qb->setParameter(1, $value);
return $qb->getQuery()
->getResult();
}
Then, I could call it in my controller like this:
$this->getDoctrine()->getRepository('MyBundle:Image')->findByNot('id', 1);
@Override
public boolean equals(Object that){
if(this == that) return true;//if both of them points the same address in memory
if(!(that instanceof People)) return false; // if "that" is not a People or a childclass
People thatPeople = (People)that; // than we can cast it to People safely
return this.name.equals(thatPeople.name) && this.age == thatPeople.age;// if they have the same name and same age, then the 2 objects are equal unless they're pointing to different memory adresses
}
Yes it is possible. You need one ON for each join table.
LEFT JOIN ab
ON ab.sht = cd.sht
LEFT JOIN aa
ON aa.sht = cd.sht
Incidentally my personal formatting preference for complex SQL is described in http://bentilly.blogspot.com/2011/02/sql-formatting-style.html. If you're going to be writing a lot of this, it likely will help.
Add the lines in the gradle.properties file
android.useAndroidX=true
android.enableJetifier=true
One you convert your image to gray-scale you cannot got back. You have gone from three channel to one, when you try to go back all three numbers will be the same. So the short answer is no you cannot go back. The reason your backtorgb function this throwing that error is because it needs to be in the format:
CvtColor(input, output, CV_GRAY2BGR)
OpenCV use BGR not RGB, so if you fix the ordering it should work, though your image will still be gray.
You must first convert your timestamps to Python datetime
objects (use datetime.strptime
). Then use date2num
to convert the dates to matplotlib format.
Plot the dates and values using plot_date
:
dates = matplotlib.dates.date2num(list_of_datetimes)
matplotlib.pyplot.plot_date(dates, values)
Arel is your friend:
User.where(User.arel_table[:id].gt(200))
I had problem on Linux. I wrote
chown -R myUserName /home/myusername/myfolder
in my project folder.
WARNING: this is NOT the right way to fix it; DO NOT RUN IT, if you aren't sure of what could be the consequences.
We are developing Versile Python (VPy), an implementation for python 2.6+ and 3.x of a new ORB/RPC framework. Functional AGPL dev releases for review and testing are available. VPy has native python capabilities similar to PyRo and RPyC via a general native objects layer (code example). The product is designed for platform-independent remote object interaction for implementations of Versile Platform.
Full disclosure: I work for the company developing VPy.
Starting PHP5.5+ you have array_column() available to you, which makes all of the below obsolete.
$ids = array_map(function ($ar) {return $ar['id'];}, $users);
Solution by @phihag will work flawlessly in PHP starting from PHP 5.3.0, if you need support before that, you will need to copy that wp_list_pluck.
In Wordpress there is a function called wp_list_pluck If you're using Wordpress that solves your problem.
PHP < 5.3If you're not using Wordpress, since the code is open source you can copy paste the code in your project (and rename the function to something you prefer, like array_pick). View source here
It fires in this order.
=
(exactly)
location = /path
^~
(forward match)
location ^~ /path
~
(regular expression case sensitive)
location ~ /path/
~*
(regular expression case insensitive)
location ~* .(jpg|png|bmp)
/
location /path
def hammingWeight(n: int) -> int:
sums = 0
while (n!=0):
sums+=1
n = n &(n-1)
return sums
In the binary representation, the least significant 1-bit in n always corresponds to a 0-bit in n - 1. Therefore, anding the two numbers n and n - 1 always flips the least significant 1-bit in n to 0, and keeps all other bits the same.
This error could be an indication that variable with the same name has been used in your code earlier, but for other purposes. Possibly, a variable has been given a name that coincides with the existing function used later in the code.
I prefer a css only scheme based on horizontal scroll, like tabs on android. This's my solution, just wrap with a class nav-tabs-responsive:
<div class="nav-tabs-responsive">
<ul class="nav nav-tabs" role="tablist">
<li>...</li>
</ul>
</div>
And two css lines:
.nav-tabs { min-width: 600px; }
.nav-tabs-responsive { overflow: auto; }
600px is the point over you will be responsive (you can set it using bootstrap variables)
To enable ssh access from the Internet for instances in a VPC subnet do the following:
I think the "powershell way" could be :
set-content destination.log -value (get-content c:\FileToAppend_*.log )
Use npm-run
.
From the readme:
Any executable available to an npm lifecycle script is available to npm-run
.
$ npm install mocha # mocha installed in ./node_modules
$ npm-run mocha test/* # uses locally installed mocha executable
$ npm install -g npm-run
You can get everything through ExternalContext
. In JSF 1.x, you can get the raw HttpServletResponse
object by ExternalContext#getResponse()
. In JSF 2.x, you can use the bunch of new delegate methods like ExternalContext#getResponseOutputStream()
without the need to grab the HttpServletResponse
from under the JSF hoods.
On the response, you should set the Content-Type
header so that the client knows which application to associate with the provided file. And, you should set the Content-Length
header so that the client can calculate the download progress, otherwise it will be unknown. And, you should set the Content-Disposition
header to attachment
if you want a Save As dialog, otherwise the client will attempt to display it inline. Finally just write the file content to the response output stream.
Most important part is to call FacesContext#responseComplete()
to inform JSF that it should not perform navigation and rendering after you've written the file to the response, otherwise the end of the response will be polluted with the HTML content of the page, or in older JSF versions, you will get an IllegalStateException
with a message like getoutputstream() has already been called for this response
when the JSF implementation calls getWriter()
to render HTML.
You only need to make sure that the action method is not called by an ajax request, but that it is called by a normal request as you fire with <h:commandLink>
and <h:commandButton>
. Ajax requests and remote commands are handled by JavaScript which in turn has, due to security reasons, no facilities to force a Save As dialogue with the content of the ajax response.
In case you're using e.g. PrimeFaces <p:commandXxx>
, then you need to make sure that you explicitly turn off ajax via ajax="false"
attribute. In case you're using ICEfaces, then you need to nest a <f:ajax disabled="true" />
in the command component.
public void download() throws IOException {
FacesContext fc = FacesContext.getCurrentInstance();
ExternalContext ec = fc.getExternalContext();
ec.responseReset(); // Some JSF component library or some Filter might have set some headers in the buffer beforehand. We want to get rid of them, else it may collide.
ec.setResponseContentType(contentType); // Check http://www.iana.org/assignments/media-types for all types. Use if necessary ExternalContext#getMimeType() for auto-detection based on filename.
ec.setResponseContentLength(contentLength); // Set it with the file size. This header is optional. It will work if it's omitted, but the download progress will be unknown.
ec.setResponseHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\""); // The Save As popup magic is done here. You can give it any file name you want, this only won't work in MSIE, it will use current request URL as file name instead.
OutputStream output = ec.getResponseOutputStream();
// Now you can write the InputStream of the file to the above OutputStream the usual way.
// ...
fc.responseComplete(); // Important! Otherwise JSF will attempt to render the response which obviously will fail since it's already written with a file and closed.
}
public void download() throws IOException {
FacesContext fc = FacesContext.getCurrentInstance();
HttpServletResponse response = (HttpServletResponse) fc.getExternalContext().getResponse();
response.reset(); // Some JSF component library or some Filter might have set some headers in the buffer beforehand. We want to get rid of them, else it may collide.
response.setContentType(contentType); // Check http://www.iana.org/assignments/media-types for all types. Use if necessary ServletContext#getMimeType() for auto-detection based on filename.
response.setContentLength(contentLength); // Set it with the file size. This header is optional. It will work if it's omitted, but the download progress will be unknown.
response.setHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\""); // The Save As popup magic is done here. You can give it any file name you want, this only won't work in MSIE, it will use current request URL as file name instead.
OutputStream output = response.getOutputStream();
// Now you can write the InputStream of the file to the above OutputStream the usual way.
// ...
fc.responseComplete(); // Important! Otherwise JSF will attempt to render the response which obviously will fail since it's already written with a file and closed.
}
In case you need to stream a static file from the local disk file system, substitute the code as below:
File file = new File("/path/to/file.ext");
String fileName = file.getName();
String contentType = ec.getMimeType(fileName); // JSF 1.x: ((ServletContext) ec.getContext()).getMimeType(fileName);
int contentLength = (int) file.length();
// ...
Files.copy(file.toPath(), output);
In case you need to stream a dynamically generated file, such as PDF or XLS, then simply provide output
there where the API being used expects an OutputStream
.
E.g. iText PDF:
String fileName = "dynamic.pdf";
String contentType = "application/pdf";
// ...
Document document = new Document();
PdfWriter writer = PdfWriter.getInstance(document, output);
document.open();
// Build PDF content here.
document.close();
E.g. Apache POI HSSF:
String fileName = "dynamic.xls";
String contentType = "application/vnd.ms-excel";
// ...
HSSFWorkbook workbook = new HSSFWorkbook();
// Build XLS content here.
workbook.write(output);
workbook.close();
Note that you cannot set the content length here. So you need to remove the line to set response content length. This is technically no problem, the only disadvantage is that the enduser will be presented an unknown download progress. In case this is important, then you really need to write to a local (temporary) file first and then provide it as shown in previous chapter.
If you're using JSF utility library OmniFaces, then you can use one of the three convenient Faces#sendFile()
methods taking either a File
, or an InputStream
, or a byte[]
, and specifying whether the file should be downloaded as an attachment (true
) or inline (false
).
public void download() throws IOException {
Faces.sendFile(file, true);
}
Yes, this code is complete as-is. You don't need to invoke responseComplete()
and so on yourself. This method also properly deals with IE-specific headers and UTF-8 filenames. You can find source code here.
First go to android studio folder on location that you installed it ( It’s usually in this path by default ; C:\Program Files\Android\Android Studio, unless you change it when you install Android Studio). Find and run uninstall.exe file.
Wait until uninstallation complete successfully, just few minutes, and after click the close.
To delete any remains of Android Studio setting files, in File Explorer, go to C:\Users\%username%, and delete .android, .AndroidStudio(#version-number)
and also .gradle, AndroidStudioProjects
if they exist. If you want remain your projects, you’d like to keep AndroidStudioProjects
folder.
Then, go to C:\Users\%username%\AppData\Roaming
and delete the JetBrains directory.
Note that AppData folder is hidden by default, to make visible it go to view tab and check hidden items in windows8 and10 ( in windows7 Select Folder Options, then select the View tab. Under Advanced settings, select Show hidden files, folders, and drives, and then select OK.
Done, you can remove Android Studio successfully, if you plan to delete SDK tools too, it is enough to remove SDK folder completely.
You can only use await
in an async
method, and Main
cannot be async
.
You'll have to use your own async
-compatible context, call Wait
on the returned Task
in the Main
method, or just ignore the returned Task
and just block on the call to Read
. Note that Wait
will wrap any exceptions in an AggregateException
.
If you want a good intro, see my async
/await
intro post.
function openLinkNewTab (url){
$('body').append('<a id="openLinkNewTab" href="' + url + '" target="_blank"><span></span></a>').find('#openLinkNewTab span').click().remove();
}
Funny, I was just researching this yesterday!
I personally use Monaco 10 or 11 for the Mac, but a good cross platform font would have to be Droid Sans Mono: http://damieng.com/blog/2007/11/14/droid-sans-mono-great-coding-font Or DejaVu sans mono is another great one (goes under a lot of different names, will be Menlo on SNow leopard and is really just a repackaged Prima/Vera) check it out here: Prima/Vera... Check it out here: http://dejavu-fonts.org/wiki/index.php?title=Download
I've seen
anEvent.isPopupTrigger()
be used before. I'm fairly new to Java so I'm happy to hear thoughts about this approach :)
It stands indeed for whatever, as in whatever works for you
MVC vs MVVM vs MVP. What a controversial topic that many developers can spend hours and hours debating and arguing about.
For several years +AngularJS was closer to MVC (or rather one of its client-side variants), but over time and thanks to many refactorings and api improvements, it's now closer to MVVM – the $scope object could be considered the ViewModel that is being decorated by a function that we call a Controller.
Being able to categorize a framework and put it into one of the MV* buckets has some advantages. It can help developers get more comfortable with its apis by making it easier to create a mental model that represents the application that is being built with the framework. It can also help to establish terminology that is used by developers.
Having said, I'd rather see developers build kick-ass apps that are well-designed and follow separation of concerns, than see them waste time arguing about MV* nonsense. And for this reason, I hereby declare AngularJS to be MVW framework - Model-View-Whatever. Where Whatever stands for "whatever works for you".
Angular gives you a lot of flexibility to nicely separate presentation logic from business logic and presentation state. Please use it fuel your productivity and application maintainability rather than heated discussions about things that at the end of the day don't matter that much.
First of all, you probably want to check for a DBNull
not a regular Null
.
Or you could look at the IsDBNull
method
You can compare the values using equals()
of Java :
public void onClick(View v) {
// TODO Auto-generated method stub
s1=text1.getText().toString();
s2=text2.getText().toString();
if(s1.equals(s2))
Show.setText("Are Equal");
else
Show.setText("Not Equal");
}
Use a dictionary when you have a set of unique keys that map to values.
Use a list if you have an ordered collection of items.
Use a set to store an unordered set of items.
You can create a pre-filled form URL from within the Form Editor, as described in the documentation for Drive Forms. You'll end up with a URL like this, for example:
https://docs.google.com/forms/d/--form-id--/viewform?entry.726721210=Mike+Jones&entry.787184751=1975-05-09&entry.1381372492&entry.960923899
In this example, question 1, "Name", has an ID of 726721210
, while question 2, "Birthday" is 787184751
. Questions 3 and 4 are blank.
You could generate the pre-filled URL by adapting the one provided through the UI to be a template, like this:
function buildUrls() {
var template = "https://docs.google.com/forms/d/--form-id--/viewform?entry.726721210=##Name##&entry.787184751=##Birthday##&entry.1381372492&entry.960923899";
var ss = SpreadsheetApp.getActive().getSheetByName("Sheet1"); // Email, Name, Birthday
var data = ss.getDataRange().getValues();
// Skip headers, then build URLs for each row in Sheet1.
for (var i = 1; i < data.length; i++ ) {
var url = template.replace('##Name##',escape(data[i][1]))
.replace('##Birthday##',data[i][2].yyyymmdd()); // see yyyymmdd below
Logger.log(url); // You could do something more useful here.
}
};
This is effective enough - you could email the pre-filled URL to each person, and they'd have some questions already filled in.
Instead of creating our template using brute force, we can piece it together programmatically. This will have the advantage that we can re-use the code without needing to remember to change the template.
Each question in a form is an item. For this example, let's assume the form has only 4 questions, as you've described them. Item [0]
is "Name", [1]
is "Birthday", and so on.
We can create a form response, which we won't submit - instead, we'll partially complete the form, only to get the pre-filled form URL. Since the Forms API understands the data types of each item, we can avoid manipulating the string format of dates and other types, which simplifies our code somewhat.
(EDIT: There's a more general version of this in How to prefill Google form checkboxes?)
/**
* Use Form API to generate pre-filled form URLs
*/
function betterBuildUrls() {
var ss = SpreadsheetApp.getActive();
var sheet = ss.getSheetByName("Sheet1");
var data = ss.getDataRange().getValues(); // Data for pre-fill
var formUrl = ss.getFormUrl(); // Use form attached to sheet
var form = FormApp.openByUrl(formUrl);
var items = form.getItems();
// Skip headers, then build URLs for each row in Sheet1.
for (var i = 1; i < data.length; i++ ) {
// Create a form response object, and prefill it
var formResponse = form.createResponse();
// Prefill Name
var formItem = items[0].asTextItem();
var response = formItem.createResponse(data[i][1]);
formResponse.withItemResponse(response);
// Prefill Birthday
formItem = items[1].asDateItem();
response = formItem.createResponse(data[i][2]);
formResponse.withItemResponse(response);
// Get prefilled form URL
var url = formResponse.toPrefilledUrl();
Logger.log(url); // You could do something more useful here.
}
};
Any date item in the pre-filled form URL is expected to be in this format: yyyy-mm-dd
. This helper function extends the Date object with a new method to handle the conversion.
When reading dates from a spreadsheet, you'll end up with a javascript Date object, as long as the format of the data is recognizable as a date. (Your example is not recognizable, so instead of May 9th 1975
you could use 5/9/1975
.)
// From http://blog.justin.kelly.org.au/simple-javascript-function-to-format-the-date-as-yyyy-mm-dd/
Date.prototype.yyyymmdd = function() {
var yyyy = this.getFullYear().toString();
var mm = (this.getMonth()+1).toString(); // getMonth() is zero-based
var dd = this.getDate().toString();
return yyyy + '-' + (mm[1]?mm:"0"+mm[0]) + '-' + (dd[1]?dd:"0"+dd[0]);
};
Ensure that your network is brought down before loading module:
sudo stop networking
It helped me - https://help.ubuntu.com/community/UbuntuBonding
function isNumber(n) {
return !isNaN(parseFloat(n)) && isFinite(n);
}
You also can create Firbase Dynamic links which will work as per your requirement. It supports multiple platforms. This link can be created, manually as well as via programming. You can then embed this link in QR code.
If the target app is installed, the link will redirect user to app. If its not installed it will redirect to Play Store/App store/Any other configured website.
If you don't want to use jQuery, take a look at Numeral.js
Here's a total, copy and paste solution, with an
of every issue involved.
for the amazing find regarding keyPath statusBarWindow.statusBar
. Good one.
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
// handle the iOS bar!
// >>>>>NOTE<<<<<
// >>>>>NOTE<<<<<
// >>>>>NOTE<<<<<
// "Status Bar Style" refers to the >>>>>color of the TEXT<<<<<< of the Apple status bar,
// it does NOT refer to the background color of the bar. This causes a lot of confusion.
// >>>>>NOTE<<<<<
// >>>>>NOTE<<<<<
// >>>>>NOTE<<<<<
// our app is white, so we want the Apple bar to be white (with, obviously, black writing)
// make the ultimate window of OUR app actually start only BELOW Apple's bar....
// so, in storyboard, never think about the issue. design to the full height in storyboard.
let h = UIApplication.shared.statusBarFrame.size.height
let f = self.window?.frame
self.window?.frame = CGRect(x: 0, y: h, width: f!.size.width, height: f!.size.height - h)
// next, in your plist be sure to have this: you almost always want this anyway:
// <key>UIViewControllerBasedStatusBarAppearance</key>
// <false/>
// next - very simply in the app Target, select "Status Bar Style" to Default.
// Do nothing in the plist regarding "Status Bar Style" - in modern Xcode, setting
// the "Status Bar Style" toggle simply sets the plist for you.
// finally, method A:
// set the bg of the Apple bar to white. Technique courtesy Warif Akhand Rishi.
// note: self.window?.clipsToBounds = true-or-false, makes no difference in method A.
if let sb = UIApplication.shared.value(forKeyPath: "statusBarWindow.statusBar") as? UIView {
sb.backgroundColor = UIColor.white
// if you prefer a light gray under there...
//sb.backgroundColor = UIColor(hue: 0, saturation: 0, brightness: 0.9, alpha: 1)
}
/*
// if you prefer or if necessary, method B:
// explicitly actually add a background, in our app, to sit behind the apple bar....
self.window?.clipsToBounds = false // MUST be false if you use this approach
let whiteness = UIView()
whiteness.frame = CGRect(x: 0, y: -h, width: f!.size.width, height: h)
whiteness.backgroundColor = UIColor.green
self.window!.addSubview(whiteness)
*/
return true
}
You can use the instanceof
operator (but see caveat below!).
var myError = new Error('foo');
myError instanceof Error // true
var myString = "Whatever";
myString instanceof Error // false
The above won't work if the error was thrown in a different window/frame/iframe than where the check is happening. In that case, the instanceof Error
check will return false, even for an Error
object. In that case, the easiest approach is duck-typing.
if (myError && myError.stack && myError.message) {
// it's an error, probably
}
However, duck-typing may produce false positives if you have non-error objects that contain stack
and message
properties.
Turns out that the problem was with face that the script was running from a cPanel "email piped to script", so was running as the user, so is was a user problem, but was not affecting the web server at all.
The cause for the user not being able to access the /etc/pki directory was due to them only having jailed ssh access. Once I granted full access, it all worked fine.
Thanks for the info though, Remi.
Great Article... worked like a breeze on Amazon Linux AMI.
Two more useful commands:
To change the default FTP upload folder
Step 1:
edit /etc/vsftpd/vsftpd.conf
Step 2: Create a new entry at the bottom of the page:
local_root=/var/www/html
To apply read, write, delete permission to the files under folder so that you can manage using a FTP device
find /var/www/html -type d -exec chmod 777 {} \;
This seems to be what you're looking for:
g <- ggplot(x, aes(reorder(variable, value), value))
g + geom_bar() + scale_y_continuous(formatter="percent") + coord_flip()
The reorder()
function will reorder your x axis items according to the value
of variable
.
Disclaimer:
The OP has made this comment on another answer:
We can have ngDisabled for buttons or input tags; by using CSS we can make the button to look like anchor tag but that doesn't help much! I was more keen on looking how it can be done using directive approach or angular way of doing it?
You can use a variable inside the scope of your controller to disable the links/buttons according to the last button/link that you've clicked on by using ng-click
to set the variable at the correct value and ng-disabled
to disable the button when needed according to the value in the variable.
I've updated your Plunker to give you an idea.
But basically, it's something like this:
<div>
<button ng-click="create()" ng-disabled="state === 'edit'">CREATE</button><br/>
<button ng-click="edit()" ng-disabled="state === 'create'">EDIT</button><br/>
<button href="" ng-click="delete()" ng-disabled="state === 'create' || state === 'edit'">DELETE</button>
</div>
just check if any unnecessary Jars are added in your library or not. if yes, then simply remove that jars from your library and clean your project once. Its worked for me.
If you are at the root of your working directory, you can do git checkout -- .
to check-out all files in the current HEAD and replace your local files.
You can also do git reset --hard
to reset your working directory and replace all changes (including the index).
I have used below line of code and it works, Try this
DataTable dt = dataSource.Tables[0];
adding following to application.rb
works
config.time_zone = 'Eastern Time (US & Canada)'
config.active_record.default_timezone = :local # Or :utc
First, convert your ButtonField
or CommandField
to a TemplateField
, then bind the Visible
property of the button to a method that implements the business logic:
<asp:GridView runat="server" ID="GV1" AutoGenerateColumns="false">
<Columns>
<asp:BoundField DataField="Name" HeaderText="Name" />
<asp:BoundField DataField="Age" HeaderText="Age" />
<asp:TemplateField>
<ItemTemplate>
<asp:Button runat="server" Text="Reject"
Visible='<%# IsOverAgeLimit((Decimal)Eval("Age")) %>'
CommandName="Select"/>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
Then, in the code behind, add in the method:
protected Boolean IsOverAgeLimit(Decimal Age) {
return Age > 35M;
}
The advantage here is you can test the IsOverAgeLimit
method fairly easily.
I use following function to convert normal date-time value to mysql datetime format.
private function ampmtosql($ampmdate) {
if($ampmdate == '')
return '';
$ampm = substr(trim(($ampmdate)), -2);
$datetimesql = substr(trim(($ampmdate)), 0, -3);
if ($ampm == 'pm') {
$hours = substr(trim($datetimesql), -5, 2);
if($hours != '12')
$datetimesql = date('Y-m-d H:i',strtotime('+12 hour',strtotime($datetimesql)));
}
elseif ($ampm == 'am') {
$hours = substr(trim($datetimesql), -5, 2);
if($hours == '12')
$datetimesql = date('Y-m-d H:i',strtotime('-12 hour',strtotime($datetimesql)));
}
return $datetimesql;
}
It converts datetime values like,
2015-06-04 09:55 AM -> 2015-06-04 09:55
2015-06-04 03:55 PM -> 2015-06-04 15:55
2015-06-04 12:30 AM -> 2015-06-04 00:55
Hope this will help someone.
Basically, it occurs in python2.7 here is my code of how it works:
i=5
while(i):
print i,
i=i-1
Output:
5 4 3 2 1
MessageBox.Show(" Value at 0,0" + DataGridView1.Rows[0].Cells[0].Value );
Some people posted the link to this bootstrap-datepicker.js implementation. I used that one in the following way, it works with Bootstrap 3.
This is the markup I used:
<div class="input-group date col-md-3" data-date-format="dd-mm-yyyy" data-date="01-01-2014">
<input id="txtHomeLoanStartDate" class="form-control" type="text" readonly="" value="01-01-2014" size="14" />
<span class="input-group-addon add-on">
<span class="glyphicon glyphicon-calendar"</span>
</span>
</div>
This is the javascript:
$('.date').datepicker();
I also included the javascript file downloaded from the link above, along with it's css file, and of course, you should remove any bootstrap grid classes like the col-md-3
to suit your needs.
select * from all_constraints
where owner = '<NAME>'
and constraint_name = 'SYS_C00381400'
/
Like all data dictionary views, this a USER_CONSTRAINTS view if you just want to check your current schema and a DBA_CONSTRAINTS view for administration users.
The construction of the constraint name indicates a system generated constraint name. For instance, if we specify NOT NULL in a table declaration. Or indeed a primary or unique key. For example:
SQL> create table t23 (id number not null primary key)
2 /
Table created.
SQL> select constraint_name, constraint_type
2 from user_constraints
3 where table_name = 'T23'
4 /
CONSTRAINT_NAME C
------------------------------ -
SYS_C00935190 C
SYS_C00935191 P
SQL>
'C'
for check, 'P'
for primary.
Generally it's a good idea to give relational constraints an explicit name. For instance, if the database creates an index for the primary key (which it will do if that column is not already indexed) it will use the constraint name oo name the index. You don't want a database full of indexes named like SYS_C00935191
.
To be honest most people don't bother naming NOT NULL constraints.
Many of the answers here are out of date for 2015 (although the initially accepted one from Daniel Roseman is not). Here's the current state of things:
.whl
files)—not just on PyPI, but in third-party repositories like Christoph Gohlke's Extension Packages for Windows. pip
can handle wheels; easy_install
cannot.virtualenv
) have become a very important and prominent tool (and recommended in the official docs); they include pip
out of the box, but don't even work properly with easy_install
.distribute
package that included easy_install
is no longer maintained. Its improvements over setuptools
got merged back into setuptools
. Trying to install distribute
will just install setuptools
instead.easy_install
itself is only quasi-maintained.pip
used to be inferior to easy_install
—installing from an unpacked source tree, from a DVCS repo, etc.—are long-gone; you can pip install .
, pip install git+https://
.pip
comes with the official Python 2.7 and 3.4+ packages from python.org, and a pip
bootstrap is included by default if you build from source.pip
as "the preferred installer program".pip
over the years that will never be in easy_install
. For example, pip
makes it easy to clone your site-packages by building a requirements file and then installing it with a single command on each side. Or to convert your requirements file to a local repo to use for in-house development. And so on.The only good reason that I know of to use easy_install
in 2015 is the special case of using Apple's pre-installed Python versions with OS X 10.5-10.8. Since 10.5, Apple has included easy_install
, but as of 10.10 they still don't include pip
. With 10.9+, you should still just use get-pip.py
, but for 10.5-10.8, this has some problems, so it's easier to sudo easy_install pip
. (In general, easy_install pip
is a bad idea; it's only for OS X 10.5-10.8 that you want to do this.) Also, 10.5-10.8 include readline
in a way that easy_install
knows how to kludge around but pip
doesn't, so you also want to sudo easy_install readline
if you want to upgrade that.
If the view item performs the same operation, you can use the @+id
for each entry in any layout because during the compilation of multiple @+id/foo
the R.java
file only creates one enumeration. So for example, if I have a save button on each page that performs the same operation, I use android:id="@+id/button_save"
in each layout. The R.java file only has one entry for the button_save.
Finally I solve the issues using below code. This type of error will happen when there is a mismatch between In/Out parameter as declare in procedure and in java code declareParameters
. Here we need to defined oracle return tab
public class ManualSaleStoredProcedureDao {
private SimpleJdbcCall getAllSytemUsers;
public List<SystemUser> getAllSytemUsers(String clientCode) {
MapSqlParameterSource in = new MapSqlParameterSource();
in.addValue("pi_client_code", clientCode);
Map<String, Object> result = getAllSytemUsers.execute(in);
@SuppressWarnings("unchecked")
List<SystemUser> systemUsers = (List<SystemUser>) result
.get(VSCConstants.GET_SYSTEM_USER_OUT_PARAM1);
return systemUsers;
}
public void setDataSource(DataSource dataSource) {
getAllSytemUsers = new SimpleJdbcCall(dataSource)
.withSchemaName(VSCConstants.SCHEMA)
.withProcedureName(VSCConstants.GET_SYSTEM_USER_PROC_NAME)
.declareParameters(
new SqlParameter(
"pi_client_code",
OracleTypes.NUMBER,
"pi_client_code"),
new SqlInOutParameter(
"po_system_users",
OracleTypes.ARRAY,
"T_SYSTEM_USER_TAB",
new OracleSystemUser()));
}
This code is working fine for me. Can you please check:
<input type="number" name="test" min="0" oninput="validity.valid||(value='');">
For those who are getting to this question via google... this error can also happen if you try to rename a field that is acting as a foreign key.
You might need to revise the data in the column, but anyway you can do one of the following:-
1- check if it is numeric then convert it else put another value like 0
Select COLUMNA AS COLUMNA_s, CASE WHEN Isnumeric(COLUMNA) = 1
THEN CONVERT(DECIMAL(18,2),COLUMNA)
ELSE 0 END AS COLUMNA
2- select only numeric values from the column
SELECT COLUMNA AS COLUMNA_s ,CONVERT(DECIMAL(18,2),COLUMNA) AS COLUMNA
where Isnumeric(COLUMNA) = 1
If you put together the answers so far, clean up and improve, you would arrive at this superior query:
UPDATE sales
SET status = 'ACTIVE'
WHERE (saleprice, saledate) IN (
SELECT saleprice, saledate
FROM sales
GROUP BY saleprice, saledate
HAVING count(*) = 1
);
Which is much faster than either of them. Nukes the performance of the currently accepted answer by factor 10 - 15 (in my tests on PostgreSQL 8.4 and 9.1).
But this is still far from optimal. Use a NOT EXISTS
(anti-)semi-join for even better performance. EXISTS
is standard SQL, has been around forever (at least since PostgreSQL 7.2, long before this question was asked) and fits the presented requirements perfectly:
UPDATE sales s
SET status = 'ACTIVE'
WHERE NOT EXISTS (
SELECT FROM sales s1 -- SELECT list can be empty for EXISTS
WHERE s.saleprice = s1.saleprice
AND s.saledate = s1.saledate
AND s.id <> s1.id -- except for row itself
)
AND s.status IS DISTINCT FROM 'ACTIVE'; -- avoid empty updates. see below
db<>fiddle here
Old SQL Fiddle
If you don't have a primary or unique key for the table (id
in the example), you can substitute with the system column ctid
for the purpose of this query (but not for some other purposes):
AND s1.ctid <> s.ctid
Every table should have a primary key. Add one if you didn't have one, yet. I suggest a serial
or an IDENTITY
column in Postgres 10+.
Related:
The subquery in the EXISTS
anti-semi-join can stop evaluating as soon as the first dupe is found (no point in looking further). For a base table with few duplicates this is only mildly more efficient. With lots of duplicates this becomes way more efficient.
For rows that already have status = 'ACTIVE'
this update would not change anything, but still insert a new row version at full cost (minor exceptions apply). Normally, you do not want this. Add another WHERE
condition like demonstrated above to avoid this and make it even faster:
If status
is defined NOT NULL
, you can simplify to:
AND status <> 'ACTIVE';
The data type of the column must support the <>
operator. Some types like json
don't. See:
This query (unlike the currently accepted answer by Joel) does not treat NULL values as equal. The following two rows for (saleprice, saledate)
would qualify as "distinct" (though looking identical to the human eye):
(123, NULL)
(123, NULL)
Also passes in a unique index and almost anywhere else, since NULL values do not compare equal according to the SQL standard. See:
OTOH, GROUP BY
, DISTINCT
or DISTINCT ON ()
treat NULL values as equal. Use an appropriate query style depending on what you want to achieve. You can still use this faster query with IS NOT DISTINCT FROM
instead of =
for any or all comparisons to make NULL compare equal. More:
If all columns being compared are defined NOT NULL
, there is no room for disagreement.
As of npm 5.2.0, once you've installed locally via
npm i typescript --save-dev
...you no longer need an entry in the scripts
section of package.json
-- you can now run the compiler with npx:
npx tsc
Now you don't have to update your package.json file every time you want to compile with different arguments.
rand() / double(RAND_MAX)
generates a floating-point random number between 0 (inclusive) and 1 (inclusive), but it's not a good way for the following reasons (because RAND_MAX is usually 32767):
Due to the above limitations of rand(), a better choice for generation of random numbers between 0 (inclusive) and 1 (exclusive) would be the following snippet (similar to the example at http://en.cppreference.com/w/cpp/numeric/random/uniform_real_distribution ):
#include <iostream>
#include <random>
#include <chrono>
int main()
{
std::mt19937_64 rng;
// initialize the random number generator with time-dependent seed
uint64_t timeSeed = std::chrono::high_resolution_clock::now().time_since_epoch().count();
std::seed_seq ss{uint32_t(timeSeed & 0xffffffff), uint32_t(timeSeed>>32)};
rng.seed(ss);
// initialize a uniform distribution between 0 and 1
std::uniform_real_distribution<double> unif(0, 1);
// ready to generate random numbers
const int nSimulations = 10;
for (int i = 0; i < nSimulations; i++)
{
double currentRandomNumber = unif(rng);
std::cout << currentRandomNumber << std::endl;
}
return 0;
}
This is easy to modify to generate random numbers between 1 (inclusive) and 2 (exclusive) by replacing unif(0, 1)
with unif(1, 2)
.
I recommend 2 things. First is associative array.
$person = Array();
$person['name'] = "Joe";
$person['age'] = 22;
Second is classes.
Detailed documentation here: http://php.net/manual/en/language.oop5.php
Another approach is to unload some logic from the backend and maek the browser do the job by using Javascript plugins such as:
Is it proper to "reach into" an object and use its dict property?
In general, I would say "no". However Namespace
has struck me as over-engineered, possibly from when classes couldn't inherit from built-in types.
On the other hand, Namespace
does present a task-oriented approach to argparse, and I can't think of a situation that would call for grabbing the __dict__
, but the limits of my imagination are not the same as yours.
If you're looking to do something with a list of files, you can use find combined with the bash $()
construct (better than backticks since it's allowed to nest).
for example, say you're at the top level of your project directory and you want a list of all C files starting with "btree". The command:
find . -type f -name 'btree*.c'
will return a list of them. But this doesn't really help with doing something with them.
So, let's further assume you want to search all those file for the string "ERROR" or edit them all. You can execute one of:
grep ERROR $(find . -type f -name 'btree*.c')
vi $(find . -type f -name 'btree*.c')
to do this.
Try using setAttribute on the result:
result.setAttribute("class","red");
Declare @MyInt int
Set @MyInt = ( Select Count(*) From MyTable )
If @MyInt > 0
Begin
Print 'There''s something in the table'
End
I'm not sure if this is your issue, but you have to esacpe the single quote in the print statement with a second single quote. While you can use SELECT to populate the variable, using SET as you have done here is just fine and clearer IMO. In addition, you can be guaranteed that Count(*) will never return a negative value so you need only check whether it is greater than zero.
Use MethodInvoker for updating label text in other thread.
private void AggiornaContatore()
{
MethodInvoker inv = delegate
{
this.lblCounter.Text = this.index.ToString();
}
this.Invoke(inv);
}
You are getting the error because your UI thread is holding the label, and since you are trying to update it through another thread you are getting cross thread exception.
You may also see: Threading in Windows Forms
I think developers can do this for their own apps via iTunes Connect but this doesn't help you if you are looking for stats on other peoples apps.
148Apps also have some aggregate AppStore metrics on their web site that could be useful to you but, again, doesn't really give a low-level breakdown of numbers.
You could also scrape some stats from the RSS feeds generated by the iTunes Store RSS Generator but, again, this just gets currently popular apps rather than actual download numbers.
Use this code:
public class LinkTest
{
public static void main(String[] args)
{
WebDriver driver = new FirefoxDriver();
driver.navigate().to("file:///C:/Users/vkiran/Desktop/xyz.html");
List<WebElement> alllinks =driver.findElements(By.xpath("//*[@id='sliding-navigation']//a"));
String a[]=new String[alllinks.size()];
for(int i=0;i<alllinks.size();i++)
{
a[i]=alllinks.get(i).getText();
if(a[i].startsWith("B"))
{
System.out.println("clicking on this link::"+driver.findElement(By.linkText(a[i])).getText());
driver.findElement(By.linkText(a[i])).click();
}
else
{
System.out.println("does not starts with B so not clicking");
}
}
}
}
You can use this (Swift 3):
UIDevice.current.identifierForVendor!.uuidString
For older versions:
UIDevice.currentDevice().identifierForVendor
or if you want a string:
UIDevice.currentDevice().identifierForVendor!.UUIDString
There is no longer a way to uniquely identify a device after the user uninstalled the app(s). The documentation says:
The value in this property remains the same while the app (or another app from the same vendor) is installed on the iOS device. The value changes when the user deletes all of that vendor’s apps from the device and subsequently reinstalls one or more of them.
You may also want to read this article by Mattt Thompson for more details:
http://nshipster.com/uuid-udid-unique-identifier/
Update for Swift 4.1, you will need to use:
UIDevice.current.identifierForVendor?.uuidString
Just use:
your_type x;
while (std::cin >> x)
{
// use x
}
operator>>
will skip whitespace by default. You can chain things to read several variables at once:
if (std::cin >> my_string >> my_number)
// use them both
getline()
reads everything on a single line, returning that whether it's empty or contains dozens of space-separated elements. If you provide the optional alternative delimiter ala getline(std::cin, my_string, ' ')
it still won't do what you seem to want, e.g. tabs will be read into my_string
.
Probably not needed for this, but a fairly common requirement that you may be interested in sometime soon is to read a single newline-delimited line, then split it into components...
std::string line;
while (std::getline(std::cin, line))
{
std::istringstream iss(line);
first_type first_on_line;
second_type second_on_line;
third_type third_on_line;
if (iss >> first_on_line >> second_on_line >> third_on_line)
...
}
Here's my addition.
From http://www.learnjavascript.co.uk/jq/reference/ajax/getjson.html and the official source
"The jqXHR.success(), jqXHR.error(), and jqXHR.complete() callback methods introduced in jQuery 1.5 are deprecated as of jQuery 1.8. To prepare your code for their eventual removal, use jqXHR.done(), jqXHR.fail(), and jqXHR.always() instead."
I did that and here is Luciano's updated code snippet:
$.getJSON("example.json", function() {
alert("success");
})
.done(function() { alert('getJSON request succeeded!'); })
.fail(function() { alert('getJSON request failed! '); })
.always(function() { alert('getJSON request ended!'); });
And with error description plus showing all json data as a string:
$.getJSON("example.json", function(data) {
alert(JSON.stringify(data));
})
.done(function() { alert('getJSON request succeeded!'); })
.fail(function(jqXHR, textStatus, errorThrown) { alert('getJSON request failed! ' + textStatus); })
.always(function() { alert('getJSON request ended!'); });
If you don't like alerts, substitute them with console.log
$.getJSON("example.json", function(data) {
console.log(JSON.stringify(data));
})
.done(function() { console.log('getJSON request succeeded!'); })
.fail(function(jqXHR, textStatus, errorThrown) { console.log('getJSON request failed! ' + textStatus); })
.always(function() { console.log('getJSON request ended!'); });
One very small nit to pick:
The RFC for email addresses allows the first part to include an "@" sign if it is quoted. Example:
"john@work"@myemployer.com
This is quite uncommon, but could happen. Theoretically, you should split on the last "@" symbol, not the first:
SELECT LEN(EmailField) - CHARINDEX('@', REVERSE(EmailField)) + 1
More information:
useHistory()
from react-router-dom
can fix your problem
import React from 'react';
import { useHistory } from "react-router-dom";
function NavigationDemo() {
const history = useHistory();
const navigateTo = () => history.push('/componentURL');//eg.history.push('/login');
return (
<div>
<button onClick={navigateTo} type="button" />
</div>
);
}
export default NavigationDemo;
To find all valid address list this is the code I have used
public static IEnumerable<string> GetAddresses()
{
var host = Dns.GetHostEntry(Dns.GetHostName());
return (from ip in host.AddressList where ip.AddressFamily == AddressFamily.lo select ip.ToString()).ToList();
}
Since JavaScript doesn't have function overload options object can be used instead. If there are one or two required arguments, it's better to keep them separate from the options object. Here is an example on how to use options object and populated values to default value in case if value was not passed in options object.
function optionsObjectTest(x, y, opts) {
opts = opts || {}; // default to an empty options object
var stringValue = opts.stringValue || "string default value";
var boolValue = !!opts.boolValue; // coerces value to boolean with a double negation pattern
var numericValue = opts.numericValue === undefined ? 123 : opts.numericValue;
return "{x:" + x + ", y:" + y + ", stringValue:'" + stringValue + "', boolValue:" + boolValue + ", numericValue:" + numericValue + "}";
}
here is an example on how to use options object
In my case, I am using homestead.
cd ~/Homestead
and run composer install
.
It is a tricky matter to parse .csv files when the .csv file could be either comma separated strings, comma separated quoted strings, or a chaotic combination of the two. The solution I came up with allows for any of the three possibilities.
I created a method, ParseCsvRow() which returns an array from a csv string. I first deal with double quotes in the string by splitting the string on double quotes into an array called quotesArray. Quoted string .csv files are only valid if there is an even number of double quotes. Double quotes in a column value should be replaced with a pair of double quotes (This is Excel's approach). As long as the .csv file meets these requirements, you can expect the delimiter commas to appear only outside of pairs of double quotes. Commas inside of pairs of double quotes are part of the column value and should be ignored when splitting the .csv into an array.
My method will test for commas outside of double quote pairs by looking only at even indexes of the quotesArray. It also removes double quotes from the start and end of column values.
public static string[] ParseCsvRow(string csvrow)
{
const string obscureCharacter = "?";
if (csvrow.Contains(obscureCharacter)) throw new Exception("Error: csv row may not contain the " + obscureCharacter + " character");
var unicodeSeparatedString = "";
var quotesArray = csvrow.Split('"'); // Split string on double quote character
if (quotesArray.Length > 1)
{
for (var i = 0; i < quotesArray.Length; i++)
{
// CSV must use double quotes to represent a quote inside a quoted cell
// Quotes must be paired up
// Test if a comma lays outside a pair of quotes. If so, replace the comma with an obscure unicode character
if (Math.Round(Math.Round((decimal) i/2)*2) == i)
{
var s = quotesArray[i].Trim();
switch (s)
{
case ",":
quotesArray[i] = obscureCharacter; // Change quoted comma seperated string to quoted "obscure character" seperated string
break;
}
}
// Build string and Replace quotes where quotes were expected.
unicodeSeparatedString += (i > 0 ? "\"" : "") + quotesArray[i].Trim();
}
}
else
{
// String does not have any pairs of double quotes. It should be safe to just replace the commas with the obscure character
unicodeSeparatedString = csvrow.Replace(",", obscureCharacter);
}
var csvRowArray = unicodeSeparatedString.Split(obscureCharacter[0]);
for (var i = 0; i < csvRowArray.Length; i++)
{
var s = csvRowArray[i].Trim();
if (s.StartsWith("\"") && s.EndsWith("\""))
{
csvRowArray[i] = s.Length > 2 ? s.Substring(1, s.Length - 2) : ""; // Remove start and end quotes.
}
}
return csvRowArray;
}
One downside of my approach is the way I temporarily replace delimiter commas with an obscure unicode character. This character needs to be so obscure, it would never show up in your .csv file. You may want to put more handling around this.
The following works:
(
echo "From: ${from}";
echo "To: ${to}";
echo "Subject: ${subject}";
echo "Content-Type: text/html";
echo "MIME-Version: 1.0";
echo "";
echo "${message}";
) | sendmail -t
For troubleshooting msmtp, which is compatible with sendmail
, see:
As soon as the page load the function will be ran:
(*your function goes here*)();
Alternatively:
document.onload = functionName();
window.onload = functionName();
There are commercial products such as ionCube (which I use), source guardian, and Zen Guard.
There are also postings on the net which claim they can reverse engineer the encoded programs. How reliable they are is questionable, since I have never used them.
Note that most of these solutions require an encoder to be installed on their servers. So you may want to make sure your client is comfortable with that.
Try this
$(function(){
$("input[type='number']").prop('min',1);
$("input[type='number']").prop('max',10);
});
Here's a one liner for bash scripts to get a list of weekdays, this is python 3. Easily modified for whatever, the int at the end is the number of days in the past you want.
python -c "import sys,datetime; print('\n'.join([(datetime.datetime.today() - datetime.timedelta(days=x)).strftime(\"%Y/%m/%d\") for x in range(0,int(sys.argv[1])) if (datetime.datetime.today() - datetime.timedelta(days=x)).isoweekday()<6]))" 10
Here is a variant to provide a start (or rather, end) date
python -c "import sys,datetime; print('\n'.join([(datetime.datetime.strptime(sys.argv[1],\"%Y/%m/%d\") - datetime.timedelta(days=x)).strftime(\"%Y/%m/%d \") for x in range(0,int(sys.argv[2])) if (datetime.datetime.today() - datetime.timedelta(days=x)).isoweekday()<6]))" 2015/12/30 10
Here is a variant for arbitrary start and end dates. not that this isn't terribly efficient, but is good for putting in a for loop in a bash script:
python -c "import sys,datetime; print('\n'.join([(datetime.datetime.strptime(sys.argv[1],\"%Y/%m/%d\") + datetime.timedelta(days=x)).strftime(\"%Y/%m/%d\") for x in range(0,int((datetime.datetime.strptime(sys.argv[2], \"%Y/%m/%d\") - datetime.datetime.strptime(sys.argv[1], \"%Y/%m/%d\")).days)) if (datetime.datetime.strptime(sys.argv[1], \"%Y/%m/%d\") + datetime.timedelta(days=x)).isoweekday()<6]))" 2015/12/15 2015/12/30
If you prefer a one-liner:
matched_lines = [line for line in my_string.split('\n') if "substring" in line]
Use the border-image : yourimage
property to set your image and scale it upto the entire border of your screen or window .
best way I know
window.onbeforeunload = function (e) {
var e = e || window.event;
var msg = "Do you really want to leave this page?"
// For IE and Firefox
if (e) {
e.returnValue = msg;
}
// For Safari / chrome
return msg;
};
There are a least these apt-get
extension packages that can help:
apt-offline - offline apt package manager
apt-zip - Update a non-networked computer using apt and removable media
This is specifically for the case of wanting to download where you have network access but to install on another machine where you do not.
Otherwise, the --download-only
option to apt-get
is your friend:
-d, --download-only
Download only; package files are only retrieved, not unpacked or installed.
Configuration Item: APT::Get::Download-Only.
To complete the previous answers, another possible solution is to change the USB socket in which your cable is plugged in.
I had this problem (with the classical answer about using adb kill-server / start-server
not working) and it solved it.
Actually, it took some time to find that because Windows was correctly recognizing the device in my first socket. But not ADB. As Windows was recognizing the device, I had no real need to test other USB physical sockets. I should have.
So you can try to plug the cable in all your USB physical sockets directly available on your computer. It did worked for me. Sometimes the USB sockets are not managed the same way by a computer.
Watch out if you are aiming at integers, like 1,2,3,4,5. If you intend to use the elements of your array as integers and not as strings after splitting the string, consider converting them into such.
var str = "1,2,3,4,5,6";
var temp = new Array();
// This will return an array with strings "1", "2", etc.
temp = str.split(",");
Adding a loop like this,
for (a in temp ) {
temp[a] = parseInt(temp[a], 10); // Explicitly include base as per Álvaro's comment
}
will return an array containing integers, and not strings.
Use vi or vim to write the sql, use colsep with a control-A (in vi and vim precede the ctrl-A with a ctrl-v). Be sure to set the linesize and pagesize to something rational and turn on trimspool and trimout.
spool it off to a file. Then...
sed -e 's/,/;/g' -e 's/ *{ctrl-a} */,/g' {spooled file} > output.csv
That sed thing can be turned into a script. The " *" before and after the ctrl-A squeezes out all the useless spaces. Isn't it great that they bothered to enable html output from sqlplus but NOT native csv?????
I do it this way because it handles commas in the data. I turns them to semi-colons.
Adding this answer as I had to lookup multiple places to achieve my use case. I had a script that runs on startup. This script runs process as a specific (passwordless) user and is running on multiple linux flavors. Here are options on different flavors: (I have taken java as target process for example)
1. RHEL / CentOS 6:
source /etc/rc.d/init.d/functions
daemon --user=myUser $JAVA_HOME/bin/java
2. RHEL 7 / SUSE12 / other linux flavors where systemd is used:
In your systemd unit file add:
User=myUser
3. Suse 11:
/sbin/startproc -u myUser $JAVA_HOME/bin/java
If your cascading deletes nuke a product because it was a member of a category that was killed, then you've set up your foreign keys improperly. Given your example tables, you should have the following table setup:
CREATE TABLE categories (
id int unsigned not null primary key,
name VARCHAR(255) default null
)Engine=InnoDB;
CREATE TABLE products (
id int unsigned not null primary key,
name VARCHAR(255) default null
)Engine=InnoDB;
CREATE TABLE categories_products (
category_id int unsigned not null,
product_id int unsigned not null,
PRIMARY KEY (category_id, product_id),
KEY pkey (product_id),
FOREIGN KEY (category_id) REFERENCES categories (id)
ON DELETE CASCADE
ON UPDATE CASCADE,
FOREIGN KEY (product_id) REFERENCES products (id)
ON DELETE CASCADE
ON UPDATE CASCADE
)Engine=InnoDB;
This way, you can delete a product OR a category, and only the associated records in categories_products will die alongside. The cascade won't travel farther up the tree and delete the parent product/category table.
e.g.
products: boots, mittens, hats, coats
categories: red, green, blue, white, black
prod/cats: red boots, green mittens, red coats, black hats
If you delete the 'red' category, then only the 'red' entry in the categories table dies, as well as the two entries prod/cats: 'red boots' and 'red coats'.
The delete will not cascade any farther and will not take out the 'boots' and 'coats' categories.
comment followup:
you're still misunderstanding how cascaded deletes work. They only affect the tables in which the "on delete cascade" is defined. In this case, the cascade is set in the "categories_products" table. If you delete the 'red' category, the only records that will cascade delete in categories_products are those where category_id = red
. It won't touch any records where 'category_id = blue', and it would not travel onwards to the "products" table, because there's no foreign key defined in that table.
Here's a more concrete example:
categories: products:
+----+------+ +----+---------+
| id | name | | id | name |
+----+------+ +----+---------+
| 1 | red | | 1 | mittens |
| 2 | blue | | 2 | boots |
+---++------+ +----+---------+
products_categories:
+------------+-------------+
| product_id | category_id |
+------------+-------------+
| 1 | 1 | // red mittens
| 1 | 2 | // blue mittens
| 2 | 1 | // red boots
| 2 | 2 | // blue boots
+------------+-------------+
Let's say you delete category #2 (blue):
DELETE FROM categories WHERE (id = 2);
the DBMS will look at all the tables which have a foreign key pointing at the 'categories' table, and delete the records where the matching id is 2. Since we only defined the foreign key relationship in products_categories
, you end up with this table once the delete completes:
+------------+-------------+
| product_id | category_id |
+------------+-------------+
| 1 | 1 | // red mittens
| 2 | 1 | // red boots
+------------+-------------+
There's no foreign key defined in the products
table, so the cascade will not work there, so you've still got boots and mittens listed. There's just no 'blue boots' and no 'blue mittens' anymore.
At first you should create constructor like this
constructor(props) {
super(props);
this.state = {
close: true,
};
}
yourFunction = () => {
this.setState({
close: !this.state.close,
});
};
then use this like
render() {
const {close} = this.state;
return (
<Fragment>
<div onClick={() => this.yourFunction()}></div>
<div className={close ? "isYourDefaultClass" : "isYourOnChangeClass"}></div>
</Fragment>
)
}
}
Please give better solutions
The main differences are:
1) OFFLINE index rebuild is faster than ONLINE rebuild.
2) Extra disk space required during SQL Server online index rebuilds.
3) SQL Server locks acquired with SQL Server online index rebuilds.
You can also make it more informative by distinguishing it to which class it belongs or even by mentioning its output value.
def print_decision_tree(tree, feature_names, offset_unit=' '):
left = tree.tree_.children_left
right = tree.tree_.children_right
threshold = tree.tree_.threshold
value = tree.tree_.value
if feature_names is None:
features = ['f%d'%i for i in tree.tree_.feature]
else:
features = [feature_names[i] for i in tree.tree_.feature]
def recurse(left, right, threshold, features, node, depth=0):
offset = offset_unit*depth
if (threshold[node] != -2):
print(offset+"if ( " + features[node] + " <= " + str(threshold[node]) + " ) {")
if left[node] != -1:
recurse (left, right, threshold, features,left[node],depth+1)
print(offset+"} else {")
if right[node] != -1:
recurse (left, right, threshold, features,right[node],depth+1)
print(offset+"}")
else:
#print(offset,value[node])
#To remove values from node
temp=str(value[node])
mid=len(temp)//2
tempx=[]
tempy=[]
cnt=0
for i in temp:
if cnt<=mid:
tempx.append(i)
cnt+=1
else:
tempy.append(i)
cnt+=1
val_yes=[]
val_no=[]
res=[]
for j in tempx:
if j=="[" or j=="]" or j=="." or j==" ":
res.append(j)
else:
val_no.append(j)
for j in tempy:
if j=="[" or j=="]" or j=="." or j==" ":
res.append(j)
else:
val_yes.append(j)
val_yes = int("".join(map(str, val_yes)))
val_no = int("".join(map(str, val_no)))
if val_yes>val_no:
print(offset,'\033[1m',"YES")
print('\033[0m')
elif val_no>val_yes:
print(offset,'\033[1m',"NO")
print('\033[0m')
else:
print(offset,'\033[1m',"Tie")
print('\033[0m')
recurse(left, right, threshold, features, 0,0)
I didn't like the output of json.dumps(...) -> For my taste way too much newlines. And I didn't want to use a command line tool or install something. I finally found Pythons pprint (= pretty print). Unfortunately it doesn't generate proper JSON but I think it is useful to have a user friendly glympse at the stored data.
Output of json.dumps(json_dict, indent=4)
{
"hyperspace": {
"constraints": [],
"design": [
[
"windFarm.windparkSize.k",
"continuous",
[
0,
0,
5
]
],
[
"hydroPlant.primaryControlMax",
"continuous",
[
100,
300
]
]
],
"kpis": [
"frequency.y",
"city.load.p[2]"
]
},
"lhc_size": 10,
"number_of_runs": 10
}
Usage of pprint:
import pprint
json_dict = {"hyperspace": {"constraints": [], "design": [["windFarm.windparkSize.k", "continuous", [0, 0, 5]], ["hydroPlant.primaryControlMax", "continuous", [100, 300]]], "kpis": ["frequency.y", "city.load.p[2]"]}, "lhc_size": 10, "number_of_runs": 10}
formatted_json_str = pprint.pformat(json_dict)
print(formatted_json_str)
pprint.pprint(json_dict)
Result of pprint.pformat(...)
or pprint.pprint(...)
:
{'hyperspace': {'constraints': [],
'design': [['windFarm.windparkSize.k', 'continuous', [0, 0, 5]],
['hydroPlant.primaryControlMax',
'continuous',
[100, 300]]],
'kpis': ['frequency.y', 'city.load.p[2]']},
'lhc_size': 10,
'number_of_runs': 10}
If you're on unix the latest version (0.8) adds ndk-build. Here's how to add it:
android.ndk {
moduleName "libraw"
}
It expects to find the JNI under 'src/main/jni', otherwise you can define it with:
sourceSets.main {
jni.srcDirs = 'path'
}
As of 28 JAN 2014 with version 0.8 the build is broken on windows, you have to disable the build with:
sourceSets.main {
jni.srcDirs = [] //disable automatic ndk-build call (currently broken for windows)
}
Check the Java API for List.
The get(int index)
method is declared to throw only the IndexOutOfBoundException
which extends RuntimeException
.
You are trying to tell Mockito to throw an exception SomeException()
that is not valid to be thrown by that particular method call.
To clarify further.
The List interface does not provide for a checked Exception to be thrown from the get(int index)
method and that is why Mockito is failing.
When you create the mocked List, Mockito will use the definition of List.class to creates its mock.
The behavior you are specifying with the when(list.get(0)).thenThrow(new SomeException())
doesn't match the method signature in List API, because get(int index)
method does not throw SomeException()
so Mockito fails.
If you really want to do this, then have Mockito throw a new RuntimeException()
or even better throw a new ArrayIndexOutOfBoundsException()
since the API specifies that that is the only valid Exception to be thrown.
You can use methodsolver
to find Ruby functions.
Here is a small script,
require 'methodsolver'
solve { a = [1,2,3]; a.____(0) == [0,1,2,3] }
Running this prints
Found 1 methods
- Array#unshift
You can install methodsolver using
gem install methodsolver
I was receiving the error (I'm using Vue) and I switched my onclick="someFunction()"
to @click="someFunction"
and now they are working.
I would like to share my experience with \n
I came to notice that "\n" works as-
puts "\n\n" // to provide 2 new lines
but not
p "\n\n"
also
puts '\n\n'
Doesn't works.
Hope will work for you!!
I was facing the same issue. I tried both $http_my_custom_header
and $sent_http_my_custom_header
but it did not work for me.
Although solved this issue by using $upstream_http_my_custom_header
.
use middleware or IExceptionHandlerPathFeature is fine. there is another way in eshop
create a exceptionfilter and register it
public class HttpGlobalExceptionFilter : IExceptionFilter
{
public void OnException(ExceptionContext context)
{...}
}
services.AddMvc(options =>
{
options.Filters.Add(typeof(HttpGlobalExceptionFilter));
})
import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
public class CsvFile {
public static void main(String[]args){
PrintWriter pw = null;
try {
pw = new PrintWriter(new File("NewData.csv"));
} catch (FileNotFoundException e) {
e.printStackTrace();
}
StringBuilder builder = new StringBuilder();
String columnNamesList = "Id,Name";
// No need give the headers Like: id, Name on builder.append
builder.append(columnNamesList +"\n");
builder.append("1"+",");
builder.append("Chola");
builder.append('\n');
pw.write(builder.toString());
pw.close();
System.out.println("done!");
}
}
To some degree this is possible, you can create an alias to a variable using closures:
Function.prototype.toString = function() {
return this();
}
var x = 1;
var y = function() { return x }
x++;
alert(y); // prints 2, no need for () because of toString redefinition
CORS is Cross Origin Resource Sharing, you get this error if you are trying to access from one domain to another domain.
Try using JSONP. In your case, JSONP should work fine because it only uses the GET method.
Try something like this:
var url = "https://api.getevents.co/event?&lat=41.904196&lng=12.465974";
$http({
method: 'JSONP',
url: url
}).
success(function(status) {
//your code when success
}).
error(function(status) {
//your code when fails
});
Change your subplot settings to:
plt.subplot(1, 2, 1)
...
plt.subplot(1, 2, 2)
The parameters for subplot
are: number of rows, number of columns, and which subplot you're currently on. So 1, 2, 1
means "a 1-row, 2-column figure: go to the first subplot." Then 1, 2, 2
means "a 1-row, 2-column figure: go to the second subplot."
You currently are asking for a 2-row, 1-column (that is, one atop the other) layout. You need to ask for a 1-row, 2-column layout instead. When you do, the result will be:
In order to minimize the overlap of subplots, you might want to kick in a:
plt.tight_layout()
before the show. Yielding:
Seems to be identical just in case that SQL server will not try to read data which is not required for the query, the optimizer is clever enough
It can have sense when join on complex query (i.e which have joings, groupings etc itself) then, yes, it is better to specify required fields.
But there is one more point. If the query is simple there is no difference but EVERY extra action even which is supposed to improve performance makes optimizer works harder and optimizer can fail to get the best plan in time and will run not optimal query. So extras select can be a such action which can even decrease performance
// Set flash data
$this->session->set_flashdata('message_name', 'This is my message');
// After that you need to used redirect function instead of load view such as
redirect("admin/signup");
// Get Flash data on view
$this->session->flashdata('message_name');
Build up a JavaScript data structure with the required information, then turn it into the json string at the end.
Based on what I think you're doing, try something like this:
var result = [];
for (var name in goals) {
if (goals.hasOwnProperty(name)) {
result.push({name: name, goals: goals[name]});
}
}
res.contentType('application/json');
res.send(JSON.stringify(result));
or something along those lines.
Using this fiddle, you can play around with the width
of each div. I've tried in both Chrome and IE and I notice a difference in width between 33%
and 33.3%
. I also notice a very small difference between 33.3%
and 33.33%
. I don't notice any difference further than this.
The difference between 33.33%
and the theoretical 33.333...%
is a mere 0.00333...%
.
For arguments sake, say my screen width is 1960px
; a fairly high but common resolution. The difference between these two widths is still only 0.065333...px
.
So, further than two decimal places, the difference in precision is negligible.
That would work depending on what client.get does when passed undefined as its first parameter.
Something like this would be safer:
app.get('/:key?', function(req, res, next) {
var key = req.params.key;
if (!key) {
next();
return;
}
client.get(key, function(err, reply) {
if(client.get(reply)) {
res.redirect(reply);
}
else {
res.render('index', {
link: null
});
}
});
});
There's no problem in calling next() inside the callback.
According to this, handlers are invoked in the order that they are added, so as long as your next route is app.get('/', ...) it will be called if there is no key.
If you define the ListView
in XAML:
<ListView x:Name="listView"/>
Then you can add columns and populate it in C#:
public Window()
{
// Initialize
this.InitializeComponent();
// Add columns
var gridView = new GridView();
this.listView.View = gridView;
gridView.Columns.Add(new GridViewColumn {
Header = "Id", DisplayMemberBinding = new Binding("Id") });
gridView.Columns.Add(new GridViewColumn {
Header = "Name", DisplayMemberBinding = new Binding("Name") });
// Populate list
this.listView.Items.Add(new MyItem { Id = 1, Name = "David" });
}
See definition of MyItem
below.
However, it's easier to define the columns in XAML (inside the ListView
definition):
<ListView x:Name="listView">
<ListView.View>
<GridView>
<GridViewColumn Header="Id" DisplayMemberBinding="{Binding Id}"/>
<GridViewColumn Header="Name" DisplayMemberBinding="{Binding Name}"/>
</GridView>
</ListView.View>
</ListView>
And then just populate the list in C#:
public Window()
{
// Initialize
this.InitializeComponent();
// Populate list
this.listView.Items.Add(new MyItem { Id = 1, Name = "David" });
}
See definition of MyItem
below.
MyItem
DefinitionMyItem
is defined like this:
public class MyItem
{
public int Id { get; set; }
public string Name { get; set; }
}
Use the formatting pattern 'dd-MM-yyyy HH:mm:ss aa' to get date as 21-10-2020 20:53:42 pm
From Using Triggers:
Detecting the DML Operation That Fired a Trigger
If more than one type of DML operation can fire a trigger (for example, ON INSERT OR DELETE OR UPDATE OF Emp_tab), the trigger body can use the conditional predicates INSERTING, DELETING, and UPDATING to check which type of statement fire the trigger.
So
IF DELETING THEN ... END IF;
should work for your case.
First install jquery using npm,
npm install jquery --save
I use:
global.jQuery = require('jquery');
var $ = global.jQuery;
window.$ = $;
Since Symfony >= 2.6, there is a nice VarDumper component, but it is not used by Twig's dump()
function.
To overwrite it, we can create an extension:
In the following implementation, do not forget to replace namespaces.
Fuz/AppBundle/Resources/config/services.yml
parameters:
# ...
app.twig.debug_extension.class: Fuz\AppBundle\Twig\Extension\DebugExtension
services:
# ...
app.twig.debug_extension:
class: %app.twig.debug_extension.class%
arguments: []
tags:
- { name: twig.extension }
Fuz/AppBundle/Twig/Extension/DebugExtension.php
<?php
namespace Fuz\AppBundle\Twig\Extension;
class DebugExtension extends \Twig_Extension
{
public function getFunctions()
{
return array (
new \Twig_SimpleFunction('dump', array('Symfony\Component\VarDumper\VarDumper', 'dump')),
);
}
public function getName()
{
return 'FuzAppBundle:Debug';
}
}
The best way to do this is:
input.heighttext{
padding: 20px 10px;
line-height: 28px;
}
If you don't need typesafe, just bring block to a new separated file and change the extension to .js,.jsx
for /f "delims=" %%i in ('dir /b /a-d *.txt') do ren "%%~i" "%%~ni 1.1%%~xi"
If you use the simple for
loop without the /f
parameter, already renamed files will be again renamed.
if (strstr(request, "favicon") != NULL) {
// contains
}
Without hitting db we can fetch all months name.
WITH CTE_Sample1 AS
(
Select 0 as MonthNumber
UNION ALL
select MonthNumber+1 FROM CTE_Sample1
WHERE MonthNumber+1<12
)
Select DateName( month , DateAdd( month , MonthNumber ,0 ) ) from CTE_Sample1
You need to use the proper git URL:
pip install git+https://github.com/jkbr/httpie.git#egg=httpie
Also see the VCS Support section of the pip documentation.
Don’t forget to include the egg=<projectname>
part to explicitly name the project; this way pip can track metadata for it without having to have run the setup.py script.
in my case: invalidateOptionsMenu
just re-setted the text to the original one,
but directly accessing the menu item and re-writing the desire text worked without problems:
if (mnuTopMenuActionBar_ != null) {
MenuItem mnuPageIndex = mnuTopMenuActionBar_
.findItem(R.id.menu_magazin_pageOfPage_text);
if (mnuPageIndex != null) {
if (getScreenOrientation() == 1) {
mnuPageIndex.setTitle((i + 1) + " von " + pages);
}
else {
mnuPageIndex.setTitle(
(i + 1) + " + " + (i + 2) + " " + " von " + pages);
}
// invalidateOptionsMenu();
}
}
due to the comment below, I was able to access the menu item via the following code:
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.magazine_swipe_activity, menu);
mnuTopMenuActionBar_ = menu;
return true;
}
Instead of using a temporary file, you can avoid creating a subshell around the while
loop by using process substitution.
while ...
do
...
done < <(grep ...)
By the way, you should be able to transform all that grep, grep, awk, awk, awk
into a single awk
.
Starting with Bash 4.2, there is a lastpipe
option that
runs the last command of a pipeline in the current shell context. The lastpipe option has no effect if job control is enabled.
bash -c 'echo foo | while read -r s; do c=3; done; echo "$c"'
bash -c 'shopt -s lastpipe; echo foo | while read -r s; do c=3; done; echo "$c"'
3
It's 2020 - nobody should be using Net::HTTP
any more and all answers seem to be saying so, use a more high level gem such as Faraday - Github
That said, what I like to do is a wrapper around the HTTP api call,something that's called like
rv = Transporter::FaradayHttp[url, options]
because this allows me to fake HTTP calls without additional dependencies, ie:
if InfoSig.env?(:test) && !(url.to_s =~ /localhost/)
response_body = FakerForTests[url: url, options: options]
else
conn = Faraday::Connection.new url, connection_options
Where the faker looks something like this
I know there are HTTP mocking/stubbing frameworks, but at least when I researched last time they didn't allow me to validate requests efficiently and they were just for HTTP, not for example for raw TCP exchanges, this system allows me to have a unified framework for all API communication.
Assuming you just want to quick&dirty convert a hash to json, send the json to a remote host to test an API and parse response to ruby this is probably fastest way without involving additional gems:
JSON.load `curl -H 'Content-Type:application/json' -H 'Accept:application/json' -X POST localhost:3000/simple_api -d '#{message.to_json}'`
Hopefully this goes without saying, but don't use this in production.
printf("price: %d, %f",temp,ftemp);
^^^
This is your problem. Since the arguments are type double
and float
, you should be using %f
for both (since printf
is a variadic function, ftemp
will be promoted to double
).
%d
expects the corresponding argument to be type int
, not double
.
Variadic functions like printf
don't really know the types of the arguments in the variable argument list; you have to tell it with the conversion specifier. Since you told printf
that the first argument is supposed to be an int
, printf will take the next sizeof (int)
bytes from the argument list and interpret it as an integer value; hence the first garbage number.
Now, it's almost guaranteed that sizeof (int)
< sizeof (double)
, so when printf
takes the next sizeof (double)
bytes from the argument list, it's probably starting with the middle byte of temp
, rather than the first byte of ftemp
; hence the second garbage number.
Use %f
for both.
what is Intent ?
It is a kind of message or information that is passed to the components. It is used to launch an activity, display a web page, send sms, send email etc.
There are two types of intents in android:
Implicit Intent
Explicit Intent
Implicit intent is used to invoke the system components
Example
Intent i = newIntent(android.content.Intent.ACTION_VIEW,Uri.parse(“http://www.amazon.com”));
startActivity(i);
Explicit intent is used to invoke the activity class.
Example
Intent intent = newIntent (this, SecondActivity.class);
startActivity(intent);
you can read more
http://www.vogella.com/tutorials/AndroidIntent/article.html#intents_overview http://developer.android.com/reference/android/content/Intent.html
You can always add your own AssemblyInfo.cs, which comes in handy for InternalsVisibleToAttribute
, CLSCompliantAttribute
and others that are not automatically generated.
<project name> > Add > New Folder
. Add > New Item...
.If you want to move your attributes back to AssemblyInfo.cs instead of having them auto-generated, you can suppress them in MSBuild as natemcmaster pointed out in his answer.
With the distinct
keyword with single and multiple column names, you get distinct records:
SELECT DISTINCT column 1, column 2, ...
FROM table_name;
In RatingBar
give attribute:
style="?android:attr/ratingBarStyleIndicator"
Such is how I have it embedded and outputted to my HTML web page:
<div class="container">
<p class="text-center">Copyright ©
<script>
var CurrentYear = new Date().getFullYear()
document.write(CurrentYear)
</script>
</p>
</div>
Output to HTML page is as follows:
Copyright © 2018
Summary (@Freek Wiekmeijer, @gtalarico) other's answer:
authentication
, then can access, otherwise 405 Not Allowed
authentication
=grant access
method are:
cookie
auth header
Basic xxx
Authorization xxx
cookie
in requests
to authcookie
in headers
cookie
by requests
's
session
to auto manage cookiesresponse.cookies
to manually set cookiesrequests
's session
auto manage cookiescurSession = requests.Session()
# all cookies received will be stored in the session object
payload={'username': "yourName",'password': "yourPassword"}
curSession.post(firstUrl, data=payload)
# internally return your expected cookies, can use for following auth
# internally use previously generated cookies, can access the resources
curSession.get(secondUrl)
curSession.get(thirdUrl)
requests
's response.cookies
payload={'username': "yourName",'password': "yourPassword"}
resp1 = requests.post(firstUrl, data=payload)
# manually pass previously returned cookies into following request
resp2 = requests.get(secondUrl, cookies= resp1.cookies)
resp3 = requests.get(thirdUrl, cookies= resp2.cookies)
You can rewrite it to use the ELSE condition of a CASE
:
SELECT status,
CASE status
WHEN 'i' THEN 'Inactive'
WHEN 't' THEN 'Terminated'
ELSE 'Active'
END AS StatusText
FROM stage.tst
I had the exact same issue. I made a separate function I can call easily when needed:
Function removeLineBreakIfAtEnd(s As String) As String
If Right(s, 1) = vbLf Then s = Left(s, Len(s) - 2)
removeLineBreakIfAtEnd = s
End Function
I found that I needed to check the last character only and do -2 to remove the line break. I also found that checking for vbLf was the ONLY way to detect the line break. The function can be called like this:
Sub MainSub()
Dim myString As String
myString = "Hello" & vbCrLf
myString = removeLineBreakIfAtEnd(myString)
MsgBox ("Here is the resulting string: '" & myString & "'")
End Sub
Add an Application Configuration File
item to your project (Right -Click Project > Add item). This will create a file called app.config
in your project.
Edit the file by adding entries like <add key="keyname" value="someValue" />
within the <appSettings>
tag.
Add a reference to the System.Configuration
dll, and reference the items in the config using code like ConfigurationManager.AppSettings["keyname"]
.
This will only ever hit document.cookie ONE time. Every subsequent request will be instant.
(function(){
var cookies;
function readCookie(name,c,C,i){
if(cookies){ return cookies[name]; }
c = document.cookie.split('; ');
cookies = {};
for(i=c.length-1; i>=0; i--){
C = c[i].split('=');
cookies[C[0]] = C[1];
}
return cookies[name];
}
window.readCookie = readCookie; // or expose it however you want
})();
I'm afraid there really isn't a faster way than this general logic unless you're free to use .forEach
which is browser dependent (even then you're not saving that much)
Your own example slightly compressed to 120 bytes
:
function read_cookie(k,r){return(r=RegExp('(^|; )'+encodeURIComponent(k)+'=([^;]*)').exec(document.cookie))?r[2]:null;}
You can get it to 110 bytes
if you make it a 1-letter function name, 90 bytes
if you drop the encodeURIComponent
.
I've gotten it down to 73 bytes
, but to be fair it's 82 bytes
when named readCookie
and 102 bytes
when then adding encodeURIComponent
:
function C(k){return(document.cookie.match('(^|; )'+k+'=([^;]*)')||0)[2]}
Interesting one. I love collecting quotes about quotes handling in cmd/command.
Your particular scripts gets fixed by using %1 instead of "%1" !!!
By adding an 'echo on' ( or getting rid of an echo off ), you could have easily found that out.
You can get it by XMLHttpRequest.responseText
in XMLHttpRequest.onreadystatechange
when XMLHttpRequest.readyState
equals to XMLHttpRequest.DONE
.
Here's an example (not compatible with IE6/7).
var xhr = new XMLHttpRequest();
xhr.onreadystatechange = function() {
if (xhr.readyState == XMLHttpRequest.DONE) {
alert(xhr.responseText);
}
}
xhr.open('GET', 'http://example.com', true);
xhr.send(null);
For better crossbrowser compatibility, not only with IE6/7, but also to cover some browser-specific memory leaks or bugs, and also for less verbosity with firing ajaxical requests, you could use jQuery.
$.get('http://example.com', function(responseText) {
alert(responseText);
});
Note that you've to take the Same origin policy for JavaScript into account when not running at localhost. You may want to consider to create a proxy script at your domain.
Try add !important to your css. Its working for me.
.panel {
float: right;
width: 120px;
height: auto;
background: #fff;
border-radius: 7px!important;
}
Swift - https://github.com/nicklockwood/SwiftFormat
It provides Xcode Extension as well as CLI option.
Open eclipse and right click in the package explorer ? import Select gradle Browse to the location where you checked out Click “Build Model” Select all the projects and hit finish
What worked for me is a combination of answers, namely:
# Reinstall OpenSSL
brew update
brew remove openssl
brew install openssl
# Download CURL CA bundle
cd /usr/local/etc/openssl/certs
wget http://curl.haxx.se/ca/cacert.pem
/usr/local/opt/openssl/bin/c_rehash
# Reinstall Ruby from source
rvm reinstall 2.2.3 --disable-binary
since version 3.11 of the google maps API, the Icon
object replaces MarkerImage
. Icon supports the same parameters as MarkerImage. I even found it to be a bit more straight forward.
An example could look like this:
var image = {
url: place.icon,
size: new google.maps.Size(71, 71),
origin: new google.maps.Point(0, 0),
anchor: new google.maps.Point(17, 34),
scaledSize: new google.maps.Size(25, 25)
};
for further information check this site
For anyone trying to achieve this with Python 3.3+, the Windows installer now includes an option to add python.exe to the system search path. Read more in the docs.
With Python 3, how about:
try:
with open(filename, 'x') as tempfile: # OSError if file exists or is invalid
pass
except OSError:
# handle error here
With the 'x' option we also don't have to worry about race conditions. See documentation here.
Now, this WILL create a very shortlived temporary file if it does not exist already - unless the name is invalid. If you can live with that, it simplifies things a lot.
For Asp.Net core you better use
<partial name="_MyPartialView" model="MyModel" />
So for example
@foreach (var item in Model)
{
<partial name="_MyItemView" model="item" />
}
If you want to do this for all submodules, without having to change directories, you can perform
git submodule foreach git reset --hard
You can also use the recursive flag to apply to all submodules:
git submodule foreach --recursive git reset --hard
Example
public static string JsonFormatter(string json)
{
StringBuilder builder = new StringBuilder();
bool quotes = false;
bool ignore = false;
int offset = 0;
int position = 0;
if (string.IsNullOrEmpty(json))
{
return string.Empty;
}
json = json.Replace(Environment.NewLine, "").Replace("\t", "");
foreach (char character in json)
{
switch (character)
{
case '"':
if (!ignore)
{
quotes = !quotes;
}
break;
case '\'':
if (quotes)
{
ignore = !ignore;
}
break;
}
if (quotes)
{
builder.Append(character);
}
else
{
switch (character)
{
case '{':
case '[':
builder.Append(character);
builder.Append(Environment.NewLine);
builder.Append(new string(' ', ++offset * 4));
break;
case '}':
case ']':
builder.Append(Environment.NewLine);
builder.Append(new string(' ', --offset * 4));
builder.Append(character);
break;
case ',':
builder.Append(character);
builder.Append(Environment.NewLine);
builder.Append(new string(' ', offset * 4));
break;
case ':':
builder.Append(character);
builder.Append(' ');
break;
default:
if (character != ' ')
{
builder.Append(character);
}
break;
}
position++;
}
}
return builder.ToString().Trim();
}
Try this
$(document).ready(function(){
$("input[name='type']:radio").change(function(){
if($(this).val() == '1')
{
// do something
}
else if($(this).val() == '2')
{
// do something
}
else if($(this).val() == '3')
{
// do something
}
});
});
I keep incrementing an integer sequence per domain in the database and use Hashids to encode the integer into a URL path.
static hashids = Hashids(salt = "my app rocks", minSize = 6)
I ran a script to see how long it takes until it exhausts the character length. For six characters it can do 164,916,224
links and then goes up to seven characters. Bitly uses seven characters. Under five characters looks weird to me.
Hashids can decode the URL path back to a integer but a simpler solution is to use the entire short link sho.rt/ka8ds3
as a primary key.
Here is the full concept:
function addDomain(domain) {
table("domains").insert("domain", domain, "seq", 0)
}
function addURL(domain, longURL) {
seq = table("domains").where("domain = ?", domain).increment("seq")
shortURL = domain + "/" + hashids.encode(seq)
table("links").insert("short", shortURL, "long", longURL)
return shortURL
}
// GET /:hashcode
function handleRequest(req, res) {
shortURL = req.host + "/" + req.param("hashcode")
longURL = table("links").where("short = ?", shortURL).get("long")
res.redirect(301, longURL)
}
Module is like a big container containing one or many small containers called Component, Service, Pipe
A Component contains :
HTML template or HTML code
Code(TypeScript)
Service: It is a reusable code that is shared by the Components so that rewriting of code is not required
Pipe: It takes in data as input and transforms it to the desired output
Reference: https://scrimba.com/
This is equivalent.
l=[..., 1,2,3]
l=[Ellipsis, 1,2,3]
...
is a constant defined inside built-in constants
.
Ellipsis
The same as the ellipsis literal “...”. Special value used mostly in conjunction with extended slicing syntax for user-defined container data types.
You can use:
=IF(ISERROR(VLOOKUP(lookup value,table array,column no,FALSE)),"FALSE","TRUE")
Since you're accessing a web.config
you should probably use
using System.Web.Configuration;
WebConfigurationManager.AppSettings["configFile"]
You can use Url.Content
which works for all links as it translates the tilde ~
to the root uri.
<a href="@Url.Action("Edit", new { id=MyId })">
<img src="@Url.Content("~/Content/Images/Image.bmp")", alt="Edit" />
</a>
The problem is that you are using getSystemResourceAsStream
. Use simply getResourceAsStream
. System resources load from the system classloader, which is almost certainly not the class loader that your jar is loaded into when run as a webapp.
It works in Eclipse because when launching an application, the system classloader is configured with your jar as part of its classpath. (E.g. java -jar my.jar will load my.jar in the system class loader.) This is not the case with web applications - application servers use complex class loading to isolate webapplications from each other and from the internals of the application server. For example, see the tomcat classloader how-to, and the diagram of the classloader hierarchy used.
EDIT: Normally, you would call getClass().getResourceAsStream()
to retrieve a resource in the classpath, but as you are fetching the resource in a static initializer, you will need to explicitly name a class that is in the classloader you want to load from. The simplest approach is to use the class containing the static initializer,
e.g.
[public] class MyClass {
static
{
...
props.load(MyClass.class.getResourceAsStream("/someProps.properties"));
}
}
Current date is in yyyy-mm-dd
format. You can convert it into yyyymmdd
format using substring
function:
select substr(current date,1,4)||substr(current date,6,2)||substr(currentdate,9,2)
A working JSFIDDLE
You can do something like this:
var y = [1, 2, 2, 3, 2]
var removeItem = 2;
y = jQuery.grep(y, function(value) {
return value != removeItem;
});
Result:
[1, 3]
http://snipplr.com/view/14381/remove-item-from-array-with-jquery/
The reason this convention came into practice is because on UNIX-like operating systems a newline character is treated as a line terminator and/or message boundary (this includes piping between processes, line buffering, etc.).
Consider, for example, that a file with just a newline character is treated as a single, empty line. Conversely, a file with a length of zero bytes is actually an empty file with zero lines. This can be confirmed according to the wc -l
command.
Altogether, this behavior is reasonable because there would be no other way to distinguish between an empty text file versus a text file with a single empty line if the \n
character was merely a line-separator rather than a line-terminator. Thus, valid text files should always end with a newline character. The only exception is if the text file is intended to be empty (no lines).
This one is more simple!
var num = 3 //instead get your value here
var aa = ["Even", "Odd"];
alert(aa[num % 2]);
SELECT orderhed.ordernum, orderhed.orderdate, currrate.currencycode,
case(currrate.currentrate) when null then 1 else currrate.currentrate end
FROM orderhed LEFT OUTER JOIN currrate ON orderhed.company = currrate.company AND orderhed.orderdate = currrate.effectivedate
As far as I understand them, all the methods I have seen so far for this question seem to add the old location to the history. To redirect the page, but do not have the old location in the history, I use the replace
method:
<script>
window.location.replace("http://example.com");
</script>
You can reference a list comprehension as it is being built by the symbol '_[1]'.
For example, the following function unique-ifies a list of elements without changing their order by referencing its list comprehension.
def unique(my_list):
return [x for x in my_list if x not in locals()['_[1]']]
Demo:
l1 = [1, 2, 3, 4, 1, 2, 3, 4, 5]
l2 = [x for x in l1 if x not in locals()['_[1]']]
print l2
Output:
[1, 2, 3, 4, 5]
Just to give an option, writing a dictionary to csv file could also be done with the pandas package. With the given example it could be something like this:
mydict = {'key1': 'a', 'key2': 'b', 'key3': 'c'}
import pandas as pd
(pd.DataFrame.from_dict(data=mydict, orient='index')
.to_csv('dict_file.csv', header=False))
The main thing to take into account is to set the 'orient' parameter to 'index' inside the from_dict method. This lets you choose if you want to write each dictionary key in a new row.
Additionaly, inside the to_csv method the header parameter is set to False just to have only the dictionary elements without annoying rows. You can always set column and index names inside the to_csv method.
Your output would look like this:
key1,a
key2,b
key3,c
If instead you want the keys to be the column's names, just use the default 'orient' parameter that is 'columns', as you could check in the documentation links.
Maybe this will help someone else, but I've seen this error when the RHS of the mapping contains a colon without enclosing quotes, such as:
someKey: another key: Change to make today: work out more
should be
someKey: another key: "Change to make today: work out more"