Step 1: Make sure you are connected to zookeeper and Kafka running
Step 2: To delele the Kafka topic run Kafka-topic (Mac) or Kafka-topic.sh if use (linux/Mac) add the port and --topic with name of your topic and --delete it just delete the topic with success.
# Delete the kafka topic
# it will delete the kafka topic
kafka-topics --zookeeper 127.0.0.1:2181 --topic name_of_topic --delete
# or
kafka-topics.sh --zookeeper 127.0.0.1:2181 --topic name_of_topic --delete
A nice single-line trick to avoid early variable expansion is to use cmd /c echo ^%time^%
cmd /c echo ^%time^% & dir /s somelongcommand & cmd /c echo ^%time^%
If you are using foreach
inside a function and you are expecting an array or a Traversable object you can type hint that function with:
function myFunction(array $a)
function myFunction(Traversable)
If you are not using foreach
inside a function or you are expecting both you can simply use this construct to check if you can iterate over the variable:
if (is_array($a) or ($a instanceof Traversable))
Use the following pattern.
^\d{10}$
How to add an add button to the navbar in swift:
self.navigationItem.rightBarButtonItem = UIBarButtonItem(barButtonSystemItem: .Add, target: self, action: "onAdd:")
onAdd:
func onAdd(sender: AnyObject) {
}
this error messages means that CABundle is not given by (-CAfile ...) OR the CABundle file is not closed by a self-signed root certificate.
Don't worry. The connection to server will work even you get theis message from openssl s_client ... (assumed you dont take other mistake too)
I think you need str.contains
, if you need rows where values of column date
contains string 07311954
:
print df[df['date'].astype(str).str.contains('07311954')]
Or if type
of date
column is string
:
print df[df['date'].str.contains('07311954')]
If you want check last 4 digits for string
1954
in column date
:
print df[df['date'].astype(str).str[-4:].str.contains('1954')]
Sample:
print df['date']
0 8152007
1 9262007
2 7311954
3 2252011
4 2012011
5 2012011
6 2222011
7 2282011
Name: date, dtype: int64
print df['date'].astype(str).str[-4:].str.contains('1954')
0 False
1 False
2 True
3 False
4 False
5 False
6 False
7 False
Name: date, dtype: bool
print df[df['date'].astype(str).str[-4:].str.contains('1954')]
cmte_id trans_typ entity_typ state employer occupation date \
2 C00119040 24K CCM MD NaN NaN 7311954
amount fec_id cand_id
2 1000 C00140715 H2MD05155
You can maximize the Bayesian Information Criterion (BIC):
BIC(C | X) = L(X | C) - (p / 2) * log n
where L(X | C)
is the log-likelihood of the dataset X
according to model C
, p
is the number of parameters in the model C
, and n
is the number of points in the dataset.
See "X-means: extending K-means with efficient estimation of the number of clusters" by Dan Pelleg and Andrew Moore in ICML 2000.
Another approach is to start with a large value for k
and keep removing centroids (reducing k) until it no longer reduces the description length. See "MDL principle for robust vector quantisation" by Horst Bischof, Ales Leonardis, and Alexander Selb in Pattern Analysis and Applications vol. 2, p. 59-72, 1999.
Finally, you can start with one cluster, then keep splitting clusters until the points assigned to each cluster have a Gaussian distribution. In "Learning the k in k-means" (NIPS 2003), Greg Hamerly and Charles Elkan show some evidence that this works better than BIC, and that BIC does not penalize the model's complexity strongly enough.
You may consider using ex
(which is a standard Unix command-based editor):
ex +g/match/d -cwq file
where:
+
executes given Ex command (man ex
), same as -c
which executes wq
(write and quit)g/match/d
- Ex command to delete lines with given match
, see: Power of gThe above example is a POSIX-compliant method for in-place editing a file as per this post at Unix.SE and POSIX specifications for ex
.
The difference with sed
is that:
sed
is a Stream EDitor, not a file editor.BashFAQ
Unless you enjoy unportable code, I/O overhead and some other bad side effects. So basically some parameters (such as in-place/-i
) are non-standard FreeBSD extensions and may not be available on other operating systems.
Well, you want to have an answer that is up-to-date and modern.
Here is my answer:
When I need to mail in Python, I use the mailgun API wich get's a lot of the headaches with sending mails sorted out. They have a wonderfull app/api that allows you to send 5,000 free emails per month.
Sending an email would be like this:
def send_simple_message():
return requests.post(
"https://api.mailgun.net/v3/YOUR_DOMAIN_NAME/messages",
auth=("api", "YOUR_API_KEY"),
data={"from": "Excited User <mailgun@YOUR_DOMAIN_NAME>",
"to": ["[email protected]", "YOU@YOUR_DOMAIN_NAME"],
"subject": "Hello",
"text": "Testing some Mailgun awesomness!"})
You can also track events and lots more, see the quickstart guide.
I hope you find this useful!
Under Linux, to find the location of $JAVA_HOME
:
readlink -f /usr/bin/java | sed "s:bin/java::"
the cacerts
are under lib/security/cacerts
:
$(readlink -f /usr/bin/java | sed "s:bin/java::")lib/security/cacerts
Under mac OS X , to find $JAVA_HOME
run:
/usr/libexec/java_home
the cacerts
are under Home/lib/security/cacerts
:
$(/usr/libexec/java_home)/lib/security/cacerts
UPDATE (OS X with JDK)
above code was tested on computer without JDK installed. With JDK installed, as pR0Ps said, it's at
$(/usr/libexec/java_home)/jre/lib/security/cacerts
#include <string>
#include <sstream>
namespace patch
{
template < typename T > std::string to_string( const T& n )
{
std::ostringstream stm ;
stm << n ;
return stm.str() ;
}
}
#include <iostream>
int main()
{
std::cout << patch::to_string(1234) << '\n' << patch::to_string(1234.56) << '\n' ;
}
do not forget to include #include <sstream>
Change the button to
<button id="search">Search</button>
and add the following script
var url = '@Url.Action("DisplaySearchResults", "Search")';
$('#search').click(function() {
var keyWord = $('#Keyword').val();
$('#searchResults').load(url, { searchText: keyWord });
})
and modify the controller method to accept the search text
public ActionResult DisplaySearchResults(string searchText)
{
var model = // build list based on parameter searchText
return PartialView("SearchResults", model);
}
The jQuery .load
method calls your controller method, passing the value of the search text and updates the contents of the <div>
with the partial view.
Side note: The use of a <form>
tag and @Html.ValidationSummary()
and @Html.ValidationMessageFor()
are probably not necessary here. Your never returning the Index
view so ValidationSummary
makes no sense and I assume you want a null
search text to return all results, and in any case you do not have any validation attributes for property Keyword
so there is nothing to validate.
Edit
Based on OP's comments that SearchCriterionModel
will contain multiple properties with validation attributes, then the approach would be to include a submit button and handle the forms .submit()
event
<input type="submit" value="Search" />
var url = '@Url.Action("DisplaySearchResults", "Search")';
$('form').submit(function() {
if (!$(this).valid()) {
return false; // prevent the ajax call if validation errors
}
var form = $(this).serialize();
$('#searchResults').load(url, form);
return false; // prevent the default submit action
})
and the controller method would be
public ActionResult DisplaySearchResults(SearchCriterionModel criteria)
{
var model = // build list based on the properties of criteria
return PartialView("SearchResults", model);
}
As posted by 'Dan' in a similar thread, there is a possible fix if you're not using a sprite:
How do I make background-size work in IE?
filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(
src='images/logo.gif',
sizingMethod='scale');
-ms-filter: "progid:DXImageTransform.Microsoft.AlphaImageLoader(
src='images/logo.gif',
sizingMethod='scale')";
However, this scales the entire image to fit in the allocated area. So if your using a sprite, this may cause issues.
Caution
The filter has a flaw, any links inside the allocated area are no longer clickable.
If you want to use a stable version of your preferred Laravel version of choice, use:
composer create-project --prefer-dist laravel/laravel project-name "5.5.*"
That will pick out the most recent or best update of version 5.5.* (5.5.28)
As Herman pointed out, you can get the index and element from each iteration.
{{range $index, $element := .}}{{$index}}
{{range $element}}{{.Value}}
{{end}}
{{end}}
Working example:
package main
import (
"html/template"
"os"
)
type EntetiesClass struct {
Name string
Value int32
}
// In the template, we use rangeStruct to turn our struct values
// into a slice we can iterate over
var htmlTemplate = `{{range $index, $element := .}}{{$index}}
{{range $element}}{{.Value}}
{{end}}
{{end}}`
func main() {
data := map[string][]EntetiesClass{
"Yoga": {{"Yoga", 15}, {"Yoga", 51}},
"Pilates": {{"Pilates", 3}, {"Pilates", 6}, {"Pilates", 9}},
}
t := template.New("t")
t, err := t.Parse(htmlTemplate)
if err != nil {
panic(err)
}
err = t.Execute(os.Stdout, data)
if err != nil {
panic(err)
}
}
Output:
Pilates
3
6
9
Yoga
15
51
Playground: http://play.golang.org/p/4ISxcFKG7v
You can use nunique
in pandas:
df.hID.nunique()
# 5
$('p:after').css('display','none');
You can use strcmp
:
break x:20 if strcmp(y, "hello") == 0
20
is line number, x
can be any filename and y
can be any variable.
To pass the value you must included the hidden value value="hiddenValue"
in the <input>
statement like so:
<input type="hidden" id="thisField" name="inputName" value="hiddenValue">
Then you recuperate the hidden form value in the same way that you recuperate the value of visible input fields, by accessing the parameter of the request object. Here is an example:
This code goes on the page where you want to hide the value.
<form action="anotherPage.jsp" method="GET">
<input type="hidden" id="thisField" name="inputName" value="hiddenValue">
<input type="submit">
</form>
Then on the 'anotherPage.jsp' page you recuperate the value by calling the getParameter(String name)
method of the implicit request
object, as so:
<% String hidden = request.getParameter("inputName"); %>
The Hidden Value is <%=hidden %>
The output of the above script will be:
The Hidden Value is hiddenValue
Kyle's solution worked perfectly fine for me so I made my research in order to avoid any Js and CSS, but just sticking with HTML.
Adding a value of selected
to the item we want to appear as a header forces it to show in the first place as a placeholder.
Something like:
<option selected disabled>Choose here</option>
The complete markup should be along these lines:
<select>
<option selected disabled>Choose here</option>
<option value="1">One</option>
<option value="2">Two</option>
<option value="3">Three</option>
<option value="4">Four</option>
<option value="5">Five</option>
</select>
You can take a look at this fiddle, and here's the result:
If you do not want the sort of placeholder text to appear listed in the options once a user clicks on the select box just add the hidden
attribute like so:
<select>
<option selected disabled hidden>Choose here</option>
<option value="1">One</option>
<option value="2">Two</option>
<option value="3">Three</option>
<option value="4">Four</option>
<option value="5">Five</option>
</select>
Check the fiddle here and the screenshot below.
Here is the solution:
<select>
<option style="display:none;" selected>Select language</option>
<option>Option 1</option>
<option>Option 2</option>
</select>
Use ps/grep/cut to grab the PID, then grep for logcat entries with that PID. Here's the command I use:
adb logcat | grep -F "`adb shell ps | grep com.asanayoga.asanarebel | tr -s [:space:] ' ' | cut -d' ' -f2`"
(You could improve the regex further to avoid the theoretical problem of unrelated log lines containing the same number, but it's never been an issue for me)
This also works when matching multiple processes.
On Windows you can do:
adb logcat | findstr com.example.package
Starting with Python 3.5, the '@' is used as a dedicated infix symbol for MATRIX MULTIPLICATION (PEP 0465 -- see https://www.python.org/dev/peps/pep-0465/)
The usual method I have seen is X.Y.Z, which generally corresponds to major.minor.patch:
Other variations use build numbers as an additional identifier. So you may have a large number for X.Y.Z.build if you have many revisions that are tested between releases. I use a couple of packages that are identified by year/month or year/release. Thus, a release in the month of September of 2010 might be 2010.9 or 2010.3 for the 3rd release of this year.
There are many variants to versioning. It all boils down to personal preference.
For the "1.3v1.1", that may be two different internal products, something that would be a shared library / codebase that is rev'd differently from the main product; that may indicate version 1.3 for the main product, and version 1.1 of the internal library / package.
These guys have an API that will give the results. It's also free to use.
Note: they also provide data source download in xls or sql format at a premium price. but these data also provides technical specifications for all the make model and trim options.
other way is:
sudo service apache2 reload
The standard MIME type for ZIP files is application/zip
. The types for the files inside the ZIP does not matter for the MIME type.
As always, it ultimately depends on your server setup.
I see two problems:
DOUBLE(10) precision definitions need a total number of digits, as well as a total number of digits after the decimal:
DOUBLE(10,8) would make be ten total digits, with 8 allowed after the decimal.
Also, you'll need to specify your id column as a key :
CREATE TABLE transactions(
id int NOT NULL AUTO_INCREMENT,
location varchar(50) NOT NULL,
description varchar(50) NOT NULL,
category varchar(50) NOT NULL,
amount double(10,9) NOT NULL,
type varchar(6) NOT NULL,
notes varchar(512),
receipt int(10),
PRIMARY KEY(id) );
You cannot change the order of columns in smaller screens but you can do that in large screens.
So change the order of your columns.
<!--Main Content-->
<div class="col-lg-9 col-lg-push-3">
</div>
<!--Sidebar-->
<div class="col-lg-3 col-lg-pull-9">
</div>
By default this displays the main content first.
So in mobile main content is displayed first.
By using col-lg-push
and col-lg-pull
we can reorder the columns in large screens and display sidebar on the left and main content on the right.
Working fiddle here.
I wrote a bash program that does all the work of setting up a PR branch for you. It performs forking if needed, syncing with the upstream, setting up upstream remote, etc. and you just need to commit your modifications, push and submit a PR.
Here is how you run it:
github-make-pr-branch ssh your-github-username orig_repo_user orig_repo_name new-feature
You will find the program here and its repository also includes a step-by-step guide to performing the same process manually if you'd like to understand how it works, and also extra information on how to keep your feature branch up-to-date with the upstream master and other useful tidbits.
It depends what you want to do with each line. awk is a useful utility for this type of processing. Example:
ls -l | awk '{print $9, $5}'
.. on my system prints the name and size of each item in the directory.
You can get columns number from ResultSetMetaData:
Statement st = conn.createStatement();
ResultSet rs = st.executeQuery(query);
ResultSetMetaData rsmd = rs.getMetaData();
int columnsNumber = rsmd.getColumnCount();
I just want to add some point to all that was listed.
With Reflection API you can write universal toString()
method for any object.
It is useful at debugging.
Here is some example:
class ObjectAnalyzer {
private ArrayList<Object> visited = new ArrayList<Object>();
/**
* Converts an object to a string representation that lists all fields.
* @param obj an object
* @return a string with the object's class name and all field names and
* values
*/
public String toString(Object obj) {
if (obj == null) return "null";
if (visited.contains(obj)) return "...";
visited.add(obj);
Class cl = obj.getClass();
if (cl == String.class) return (String) obj;
if (cl.isArray()) {
String r = cl.getComponentType() + "[]{";
for (int i = 0; i < Array.getLength(obj); i++) {
if (i > 0) r += ",";
Object val = Array.get(obj, i);
if (cl.getComponentType().isPrimitive()) r += val;
else r += toString(val);
}
return r + "}";
}
String r = cl.getName();
// inspect the fields of this class and all superclasses
do {
r += "[";
Field[] fields = cl.getDeclaredFields();
AccessibleObject.setAccessible(fields, true);
// get the names and values of all fields
for (Field f : fields) {
if (!Modifier.isStatic(f.getModifiers())) {
if (!r.endsWith("[")) r += ",";
r += f.getName() + "=";
try {
Class t = f.getType();
Object val = f.get(obj);
if (t.isPrimitive()) r += val;
else r += toString(val);
} catch (Exception e) {
e.printStackTrace();
}
}
}
r += "]";
cl = cl.getSuperclass();
} while (cl != null);
return r;
}
}
If you are looking to style a file input element, look at open file dialog box in javascript. If you are looking to grab the files associated with a file input element, you must do something like this:
inputElement.onchange = function(event) {
var fileList = inputElement.files;
//TODO do something with fileList.
}
See this MDN article for more info on the FileList
type.
Note that the code above will only work in browsers that support the File API. For IE9 and earlier, for example, you only have access to the file name. The input element has no files
property in non-File API browsers.
You need a loop over the lines of a file, you need to learn about string methods
with open(filename,'r') as f:
for line in f.readlines():
# python can do regexes, but this is for s fixed string only
if "something" in line:
idx1 = line.find('"')
idx2 = line.find('"', idx1+1)
field = line[idx1+1:idx2-1]
print(field)
and you need a method to pass the filename to your python program and while you are at it, maybe also the string to search for...
For the future, try to ask more focused questions if you can,
This problem appear if two software use same port for connecting to the server
try to close the port by cmd according to your operating system
then reboot your Android studio or your Eclipse or your Software.
Ex1:
Reading a single CSV file. Provide complete file path:
val df = spark.read.option("header", "true").csv("C:spark\\sample_data\\tmp\\cars1.csv")
Ex2:
Reading multiple CSV files passing names:
val df=spark.read.option("header","true").csv("C:spark\\sample_data\\tmp\\cars1.csv", "C:spark\\sample_data\\tmp\\cars2.csv")
Ex3:
Reading multiple CSV files passing list of names:
val paths = List("C:spark\\sample_data\\tmp\\cars1.csv", "C:spark\\sample_data\\tmp\\cars2.csv")
val df = spark.read.option("header", "true").csv(paths: _*)
Ex4:
Reading multiple CSV files in a folder ignoring other files:
val df = spark.read.option("header", "true").csv("C:spark\\sample_data\\tmp\\*.csv")
Ex5:
Reading multiple CSV files from multiple folders:
val folders = List("C:spark\\sample_data\\tmp", "C:spark\\sample_data\\tmp1")
val df = spark.read.option("header", "true").csv(folders: _*)
Check the variables before building the query, if they are empty, change them to the string NULL
I found that the answer by cballou was no longer working in Firefox as of Jan. 2014. Specifically, if (self.pageYOffset)
didn't trigger if the client had scrolled right, but not down - because 0
is a falsey number. This went undetected for a while because Firefox supported document.body.scrollLeft
/Top
, but this is no longer working for me (on Firefox 26.0).
Here's my modified solution:
var getPageScroll = function(document_el, window_el) {
var xScroll = 0, yScroll = 0;
if (window_el.pageYOffset !== undefined) {
yScroll = window_el.pageYOffset;
xScroll = window_el.pageXOffset;
} else if (document_el.documentElement !== undefined && document_el.documentElement.scrollTop) {
yScroll = document_el.documentElement.scrollTop;
xScroll = document_el.documentElement.scrollLeft;
} else if (document_el.body !== undefined) {// all other Explorers
yScroll = document_el.body.scrollTop;
xScroll = document_el.body.scrollLeft;
}
return [xScroll,yScroll];
};
Tested and working in FF26, Chrome 31, IE11. Almost certainly works on older versions of all of them.
You can use lodash's findIndex to get the index of the specific element and then splice using it.
myArray.splice(_.findIndex(myArray, function(item) {
return item.value === 'money';
}), 1);
Update
You can also use ES6's findIndex()
The findIndex() method returns the index of the first element in the array that satisfies the provided testing function. Otherwise -1 is returned.
const itemToRemoveIndex = myArray.findIndex(function(item) {
return item.field === 'money';
});
// proceed to remove an item only if it exists.
if(itemToRemoveIndex !== -1){
myArray.splice(itemToRemoveIndex, 1);
}
To match a substring inside parentheses excluding any inner parentheses you may use
\(([^()]*)\)
pattern. See the regex demo.
In JavaScript, use it like
var rx = /\(([^()]*)\)/g;
Pattern details
\(
- a (
char([^()]*)
- Capturing group 1: a negated character class matching any 0 or more chars other than (
and )
\)
- a )
char.To get the whole match, grab Group 0 value, if you need the text inside parentheses, grab Group 1 value.
Most up-to-date JavaScript code demo (using matchAll
):
const strs = ["I expect five hundred dollars ($500).", "I expect.. :( five hundred dollars ($500)."];
const rx = /\(([^()]*)\)/g;
strs.forEach(x => {
const matches = [...x.matchAll(rx)];
console.log( Array.from(matches, m => m[0]) ); // All full match values
console.log( Array.from(matches, m => m[1]) ); // All Group 1 values
});
_x000D_
Legacy JavaScript code demo (ES5 compliant):
var strs = ["I expect five hundred dollars ($500).", "I expect.. :( five hundred dollars ($500)."];
var rx = /\(([^()]*)\)/g;
for (var i=0;i<strs.length;i++) {
console.log(strs[i]);
// Grab Group 1 values:
var res=[], m;
while(m=rx.exec(strs[i])) {
res.push(m[1]);
}
console.log("Group 1: ", res);
// Grab whole values
console.log("Whole matches: ", strs[i].match(rx));
}
_x000D_
I made two examples from what I think your question might be:
Check this out for storing additional values. It uses data attributes to store the other value:
Since this setting is not an attribute
It is an attribute.
Some attributes are defined as boolean, which means you can specify their value and leave everything else out. i.e. Instead of disabled="disabled", you include only the bold part. In HTML 4, you should include only the bold part as the full version is marked as a feature with limited support (although that is less true now then when the spec was written).
As of HTML 5, the rules have changed and now you include only the name and not the value. This makes no practical difference because the name and the value are the same.
The DOM property is also called disabled
and is a boolean that takes true
or false
.
foo.disabled = true;
In theory you can also foo.setAttribute('disabled', 'disabled');
and foo.removeAttribute("disabled")
, but I wouldn't trust this with older versions of Internet Explorer (which are notoriously buggy when it comes to setAttribute
).
There are a few different ways to accomplish this, I'll outline my favourites.
Use a ToggleButton and apply a custom style to it. I suggest this because your required control is "like a toggle button" but just looks different from the default toggle button styling.
My preferred method is to define a graphic for the button in css:
.toggle-button {
-fx-graphic: url('http://icons.iconarchive.com/icons/aha-soft/desktop-buffet/128/Pizza-icon.png');
}
.toggle-button:selected {
-fx-graphic: url('http://icons.iconarchive.com/icons/aha-soft/desktop-buffet/128/Piece-of-cake-icon.png');
}
OR use the attached css to define a background image.
// file imagetogglebutton.css deployed in the same package as ToggleButtonImage.class
.toggle-button {
-fx-background-image: url('http://icons.iconarchive.com/icons/aha-soft/desktop-buffet/128/Pizza-icon.png');
-fx-background-repeat: no-repeat;
-fx-background-position: center;
}
.toggle-button:selected {
-fx-background-image: url('http://icons.iconarchive.com/icons/aha-soft/desktop-buffet/128/Piece-of-cake-icon.png');
}
I prefer the -fx-graphic specification over the -fx-background-* specifications as the rules for styling background images are tricky and setting the background does not automatically size the button to the image, whereas setting the graphic does.
And some sample code:
import javafx.application.Application;
import javafx.scene.*;
import javafx.scene.control.ToggleButton;
import javafx.scene.layout.StackPaneBuilder;
import javafx.stage.Stage;
public class ToggleButtonImage extends Application {
public static void main(String[] args) throws Exception { launch(args); }
@Override public void start(final Stage stage) throws Exception {
final ToggleButton toggle = new ToggleButton();
toggle.getStylesheets().add(this.getClass().getResource(
"imagetogglebutton.css"
).toExternalForm());
toggle.setMinSize(148, 148); toggle.setMaxSize(148, 148);
stage.setScene(new Scene(
StackPaneBuilder.create()
.children(toggle)
.style("-fx-padding:10; -fx-background-color: cornsilk;")
.build()
));
stage.show();
}
}
Some advantages of doing this are:
An alternate is to not use css and still use a ToggleButton, but set the image graphic in code:
import javafx.application.Application;
import javafx.beans.binding.Bindings;
import javafx.scene.*;
import javafx.scene.control.ToggleButton;
import javafx.scene.image.*;
import javafx.scene.layout.StackPaneBuilder;
import javafx.stage.Stage;
public class ToggleButtonImageViaGraphic extends Application {
public static void main(String[] args) throws Exception { launch(args); }
@Override public void start(final Stage stage) throws Exception {
final ToggleButton toggle = new ToggleButton();
final Image unselected = new Image(
"http://icons.iconarchive.com/icons/aha-soft/desktop-buffet/128/Pizza-icon.png"
);
final Image selected = new Image(
"http://icons.iconarchive.com/icons/aha-soft/desktop-buffet/128/Piece-of-cake-icon.png"
);
final ImageView toggleImage = new ImageView();
toggle.setGraphic(toggleImage);
toggleImage.imageProperty().bind(Bindings
.when(toggle.selectedProperty())
.then(selected)
.otherwise(unselected)
);
stage.setScene(new Scene(
StackPaneBuilder.create()
.children(toggle)
.style("-fx-padding:10; -fx-background-color: cornsilk;")
.build()
));
stage.show();
}
}
The code based approach has the advantage that you don't have to use css if you are unfamilar with it.
For best performance and ease of porting to unsigned applet and webstart sandboxes, bundle the images with your app and reference them by relative path urls rather than downloading them off the net.
select *
, concat(cast(cast((ThirdTable.Total_Records_in_Group * 100 / ThirdTable.Total_Records_in_baseTable) as DECIMAL(5,2)) as varchar), '%') PERCENTage
from
(
SELECT FirstTable.FirstField, FirstTable.SecondField, SecondTable.Total_Records_in_baseTable, count(*) Total_Records_in_Group
FROM BaseTable FirstTable
JOIN (
SELECT FK1, count(*) AS Total_Records_in_baseTable
FROM BaseTable
GROUP BY FK1
) SecondTable
ON FirstTable.FirstField = SecondTable.FK1
GROUP BY FirstTable.FirstField, FirstTable.SecondField, SecondTable.Total_Records_in_baseTable
ORDER BY FirstTable.FirstField, FirstTable.SecondField
) ThirdTable
Comma separate the values:
UPDATE settings SET postsPerPage = $postsPerPage, style = $style WHERE id = '1'"
I have the same issue, where I want to replace the white space in any pdf file to a dash
-
.
But the files were in multiple sub-directories. So, I had to use os.walk()
.
In your case for multiple sub-directories, it could be something like this:
import os
for dpath, dnames, fnames in os.walk('/path/to/directory'):
for f in fnames:
os.chdir(dpath)
if f.startswith('cheese_'):
os.rename(f, f.replace('cheese_', ''))
I'd like to plug a couple of excellent but somewhat dense papers by Jeremy Gibbons: "Design patterns as higher-order datatype-generic programs" and "The essence of the Iterator pattern" (both available here: http://www.comlab.ox.ac.uk/jeremy.gibbons/publications/).
These both describe how idiomatic functional constructs cover the terrain that is covered by specific design patterns in other (object-oriented) settings.
For those using jQuery there's a convenient method: http://api.jquery.com/change/
My sphinx.conf
source post_source
{
type = mysql
sql_host = localhost
sql_user = ***
sql_pass = ***
sql_db = ***
sql_port = 3306
sql_query_pre = SET NAMES utf8
# query before fetching rows to index
sql_query = SELECT *, id AS pid, CRC32(safetag) as safetag_crc32 FROM hb_posts
sql_attr_uint = pid
# pid (as 'sql_attr_uint') is necessary for sphinx
# this field must be unique
# that is why I like sphinx
# you can store custom string fields into indexes (memory) as well
sql_field_string = title
sql_field_string = slug
sql_field_string = content
sql_field_string = tags
sql_attr_uint = category
# integer fields must be defined as sql_attr_uint
sql_attr_timestamp = date
# timestamp fields must be defined as sql_attr_timestamp
sql_query_info_pre = SET NAMES utf8
# if you need unicode support for sql_field_string, you need to patch the source
# this param. is not supported natively
sql_query_info = SELECT * FROM my_posts WHERE id = $id
}
index posts
{
source = post_source
# source above
path = /var/data/posts
# index location
charset_type = utf-8
}
Test script:
<?php
require "sphinxapi.php";
$safetag = $_GET["my_post_slug"];
// $safetag = preg_replace("/[^a-z0-9\-_]/i", "", $safetag);
$conf = getMyConf();
$cl = New SphinxClient();
$cl->SetServer($conf["server"], $conf["port"]);
$cl->SetConnectTimeout($conf["timeout"]);
$cl->setMaxQueryTime($conf["max"]);
# set search params
$cl->SetMatchMode(SPH_MATCH_FULLSCAN);
$cl->SetArrayResult(TRUE);
$cl->setLimits(0, 1, 1);
# looking for the post (not searching a keyword)
$cl->SetFilter("safetag_crc32", array(crc32($safetag)));
# fetch results
$post = $cl->Query(null, "post_1");
echo "<pre>";
var_dump($post);
echo "</pre>";
exit("done");
?>
Sample result:
[array] =>
"id" => 123,
"title" => "My post title.",
"content" => "My <p>post</p> content.",
...
[ and other fields ]
Sphinx query time:
0.001 sec.
Sphinx query time (1k concurrent):
=> 0.346 sec. (average)
=> 0.340 sec. (average of last 10 query)
MySQL query time:
"SELECT * FROM hb_posts WHERE id = 123;"
=> 0.001 sec.
MySQL query time (1k concurrent):
"SELECT * FROM my_posts WHERE id = 123;"
=> 1.612 sec. (average)
=> 1.920 sec. (average of last 10 query)
A table contains data, a view is just a SELECT
statement which has been saved in the database (more or less, depending on your database).
The advantage of a view is that it can join data from several tables thus creating a new view of it. Say you have a database with salaries and you need to do some complex statistical queries on it.
Instead of sending the complex query to the database all the time, you can save the query as a view and then SELECT * FROM view
I faced the same error and did some research to only see that there could be different scenarios to this error. Let me share my findings.
Scenario 1: There cannot be spaces beside the =
(equals) sign
$ export TEMP_ENV = example-value
-bash: export: `=': not a valid identifier
// this is the answer to the question
$ export TEMP_ENV =example-value
-bash: export: `=example-value': not a valid identifier
$ export TEMP_ENV= example-value
-bash: export: `example-value': not a valid identifier
Scenario 2: Object value assignment should not have spaces besides quotes
$ export TEMP_ENV={ "key" : "json example" }
-bash: export: `:': not a valid identifier
-bash: export: `json example': not a valid identifier
-bash: export: `}': not a valid identifier
Scenario 3: List value assignment should not have spaces between values
$ export TEMP_ENV=[1,2 ,3 ]
-bash: export: `,3': not a valid identifier
-bash: export: `]': not a valid identifier
I'm sharing these, because I was stuck for a couple of hours trying to figure out a workaround. Hopefully, it will help someone in need.
I'm on Mojave with Python 2.7 and after pip install --user jupyter
the binary went here:
/Users/me/Library/Python//2.7/bin/jupyter
You just want a command which gives exactly the same result as rm -rf local_repo && git clone remote_url
, right? I also want this feature. I wonder why git does not provide such a command (such as git reclone
or git sync
), neither does svn provide such a command (such as svn recheckout
or svn sync
).
Try the following command:
git reset --hard origin/master
git clean -fxd
git pull
Since I found this question not being aware, that mysql always stores time in timestamp fields in UTC but will display (e.g. phpmyadmin) in local time zone I would like to add my findings.
I have an automatically updated last_modified field, defined as:
`last_modified` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
Looking at it with phpmyadmin, it looks like it is in local time, internally it is UTC
SET time_zone = '+04:00'; // or '+00:00' to display dates in UTC or 'UTC' if time zones are installed.
SELECT last_modified, UNIX_TIMESTAMP(last_modified), from_unixtime(UNIX_TIMESTAMP(last_modified), '%Y-%c-%d %H:%i:%s'), CONVERT_TZ(last_modified,@@session.time_zone,'+00:00') as UTC FROM `table_name`
In any constellation, UNIX_TIMESTAMP and 'as UTC' are always displayed in UTC time.
Run this twice, first without setting the time_zone.
One caveat! If you want to compose this via OR or AND you cannot use it in this form:
-myfield:*
but you must use
(*:* NOT myfield:*)
This form is perfectly composable. Apparently SOLR will expand the first form to the second, but only when it is a top node. Hope this saves you some time!
As you are using SQL Server 2008, go with Martin's answer.
If you find yourself needing to do it in SQL Server 2005 where you don't have access to the Date
column type, I'd use:
SELECT DATEADD(DAY, DATEDIFF(DAY, 0, GETDATE()), 0)
Unique counts of field values are achieved by using facets. See ES documentation for the full story, but the gist is that you will create a query and then ask ES to prepare facets on the results for counting values found in fields. It's up to you to customize the fields used and even describe how you want the values returned. The most basic of facet types is just to group by terms, which would be like an IP address above. You can get pretty complex with these, even requiring a query within your facet!
{
"query": {
"match_all": {}
},
"facets": {
"terms": {
"field": "ip_address"
}
}
}
Five years later with introduction of React Hooks there is now much more elegant way of doing it with use useContext hook.
You define context in a global scope, export variables, objects and functions in the parent component and then wrap children in the App in a context provided and import whatever you need in child components. Below is a proof of concept.
import React, { useState, useContext } from "react";
import ReactDOM from "react-dom";
import styles from "./styles.css";
// Create context container in a global scope so it can be visible by every component
const ContextContainer = React.createContext(null);
const initialAppState = {
selected: "Nothing"
};
function App() {
// The app has a state variable and update handler
const [appState, updateAppState] = useState(initialAppState);
return (
<div>
<h1>Passing state between components</h1>
{/*
This is a context provider. We wrap in it any children that might want to access
App's variables.
In 'value' you can pass as many objects, functions as you want.
We wanna share appState and its handler with child components,
*/}
<ContextContainer.Provider value={{ appState, updateAppState }}>
{/* Here we load some child components */}
<Book title="GoT" price="10" />
<DebugNotice />
</ContextContainer.Provider>
</div>
);
}
// Child component Book
function Book(props) {
// Inside the child component you can import whatever the context provider allows.
// Earlier we passed value={{ appState, updateAppState }}
// In this child we need the appState and the update handler
const { appState, updateAppState } = useContext(ContextContainer);
function handleCommentChange(e) {
//Here on button click we call updateAppState as we would normally do in the App
// It adds/updates comment property with input value to the appState
updateAppState({ ...appState, comment: e.target.value });
}
return (
<div className="book">
<h2>{props.title}</h2>
<p>${props.price}</p>
<input
type="text"
//Controlled Component. Value is reverse vound the value of the variable in state
value={appState.comment}
onChange={handleCommentChange}
/>
<br />
<button
type="button"
// Here on button click we call updateAppState as we would normally do in the app
onClick={() => updateAppState({ ...appState, selected: props.title })}
>
Select This Book
</button>
</div>
);
}
// Just another child component
function DebugNotice() {
// Inside the child component you can import whatever the context provider allows.
// Earlier we passed value={{ appState, updateAppState }}
// but in this child we only need the appState to display its value
const { appState } = useContext(ContextContainer);
/* Here we pretty print the current state of the appState */
return (
<div className="state">
<h2>appState</h2>
<pre>{JSON.stringify(appState, null, 2)}</pre>
</div>
);
}
const rootElement = document.body;
ReactDOM.render(<App />, rootElement);
You can run this example in the Code Sandbox editor.
If you use IIS Express via Visual Studio instead of the builtin ASP.net host, you can achieve this.
Have you tried setting the spacing to zero?
/*alternating row*/
table, tr, td, th {margin:0;border:0;padding:0;spacing:0;}
tr.rowhighlight {background-color:#f0f8ff;margin:0;border:0;padding:0;spacing:0;}
The best way to set/get the value of a textarea is the .val()
, .value
method.
.text()
internally uses the .textContent
(or .innerText
for IE) method to get the contents of a <textarea>
. The following test cases illustrate how text()
and .val()
relate to each other:
var t = '<textarea>';
console.log($(t).text('test').val()); // Prints test
console.log($(t).val('too').text('test').val()); // Prints too
console.log($(t).val('too').text()); // Prints nothing
console.log($(t).text('test').val('too').val()); // Prints too
console.log($(t).text('test').val('too').text()); // Prints test
The value
property, used by .val()
always shows the current visible value, whereas text()
's return value can be wrong.
Taking reference of ThiefMaster? sometimes we get an error with value given as '\n' or null and perform for that required to handle ValueError:
Handling the exception is the way to go
try:
gotdata = dlist[1]
except (IndexError, ValueError):
gotdata = 'null'
I was running into a similar error in pywikipediabot. The .decode
method is a step in the right direction but for me it didn't work without adding 'ignore'
:
ignore_encoding = lambda s: s.decode('utf8', 'ignore')
Ignoring encoding errors can lead to data loss or produce incorrect output. But if you just want to get it done and the details aren't very important this can be a good way to move faster.
$el.css({
height : '',
'margin-top' : ''
});
etc...
Just leave the 2nd param blank!
private void button1_Click(object sender, EventArgs e)
{
OpenFileDialog open = new OpenFileDialog();
if (open.ShowDialog() == DialogResult.OK)
pictureBox1.Image = Bitmap.FromFile(open.FileName);
}
I've posted longer answer here: https://stackoverflow.com/a/20877657/207661
TL;DR: You need only one line of code that runs in document ready event:
$(document.body).tooltip({ selector: "[title]" });
Other more complicated code suggested in other answers don't seem necessary (I've tested this with Bootstrap 3.0).
Volatile and Atomic are two different concepts. Volatile ensures, that a certain, expected (memory) state is true across different threads, while Atomics ensure that operation on variables are performed atomically.
Take the following example of two threads in Java:
Thread A:
value = 1;
done = true;
Thread B:
if (done)
System.out.println(value);
Starting with value = 0
and done = false
the rule of threading tells us, that it is undefined whether or not Thread B will print value. Furthermore value is undefined at that point as well! To explain this you need to know a bit about Java memory management (which can be complex), in short: Threads may create local copies of variables, and the JVM can reorder code to optimize it, therefore there is no guarantee that the above code is run in exactly that order. Setting done to true and then setting value to 1 could be a possible outcome of the JIT optimizations.
volatile
only ensures, that at the moment of access of such a variable, the new value will be immediately visible to all other threads and the order of execution ensures, that the code is at the state you would expect it to be. So in case of the code above, defining done
as volatile will ensure that whenever Thread B checks the variable, it is either false, or true, and if it is true, then value
has been set to 1 as well.
As a side-effect of volatile, the value of such a variable is set thread-wide atomically (at a very minor cost of execution speed). This is however only important on 32-bit systems that i.E. use long (64-bit) variables (or similar), in most other cases setting/reading a variable is atomic anyways. But there is an important difference between an atomic access and an atomic operation. Volatile only ensures that the access is atomically, while Atomics ensure that the operation is atomically.
Take the following example:
i = i + 1;
No matter how you define i, a different Thread reading the value just when the above line is executed might get i, or i + 1, because the operation is not atomically. If the other thread sets i to a different value, in worst case i could be set back to whatever it was before by thread A, because it was just in the middle of calculating i + 1 based on the old value, and then set i again to that old value + 1. Explanation:
Assume i = 0
Thread A reads i, calculates i+1, which is 1
Thread B sets i to 1000 and returns
Thread A now sets i to the result of the operation, which is i = 1
Atomics like AtomicInteger ensure, that such operations happen atomically. So the above issue cannot happen, i would either be 1000 or 1001 once both threads are finished.
You can force the input to contain only positive integer by adding onkeypress
within the input
tag.
<input type="number" onkeypress="return event.charCode >= 48" min="1" >
_x000D_
Here, event.charCode >= 48
ensures that only numbers greater than or equal to 0 are returned, while the min
tag ensures that you can come to a minimum of 1 by scrolling within the input bar.
Here is an example:
HTML code:
<img id="myImg" src="http://static.jquery.com/files/rocker/images/logo_jquery_215x53.gif"/>
JavaScript code:
$(document).ready(function() {
$( "#myImg" ).mouseover(function(){
$(this).attr("src", "http://www.jqueryui.com/images/logo.gif");
});
$( "#myImg" ).mouseout(function(){
$(this).attr("src", "http://static.jquery.com/files/rocker/images/logo_jquery_215x53.gif");
});
});
Edit: Sorry, your code was a bit strange. Now I understood what you were doing. ;) The hover method is better, of course.
Be careful: while the string representations for .NET Guid and (RFC4122) UUID are identical, the storage format is not. .NET trades in little-endian bytes for the first three Guid
parts.
If you are transmitting the bytes (for example, as base64), you can't just use Guid.ToByteArray()
and encode it. You'll need to Array.Reverse
the first three parts (Data1-3).
I do it this way:
var rfc4122bytes = Convert.FromBase64String("aguidthatIgotonthewire==");
Array.Reverse(rfc4122bytes,0,4);
Array.Reverse(rfc4122bytes,4,2);
Array.Reverse(rfc4122bytes,6,2);
var guid = new Guid(rfc4122bytes);
See this answer for the specific .NET implementation details.
Edit: Thanks to Jeff Walker, Code Ranger, for pointing out that the internals are not relevant to the format of the byte array that goes in and out of the byte-array constructor and ToByteArray()
.
why you need a for-loop for this? the solution is very obvious:
answers.add(answer1);
answers.add(answer2);
answers.add(answer3);
that's it. no for-loop needed.
This works too
var i = 1;_x000D_
$('button').click(function() {_x000D_
$('#red').clone().appendTo('#test').prop('id', 'red' + i);_x000D_
i++; _x000D_
});
_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.2.4/jquery.min.js"></script>_x000D_
<div id="test">_x000D_
<button>Clone</button>_x000D_
<div class="red" id="red">_x000D_
</div>_x000D_
</div>_x000D_
_x000D_
<style>_x000D_
.red {_x000D_
width:20px;_x000D_
height:20px;_x000D_
background-color: red;_x000D_
margin: 10px;_x000D_
}_x000D_
</style>
_x000D_
I use this kind of pattern often. It's very compact:
// Define a constant in your class. Use a HashSet for performance
private static final Set<Integer> values = new HashSet<Integer>(Arrays.asList(12, 16, 19));
// In your method:
if (values.contains(x)) {
...
}
A HashSet
is used here to give good look-up performance - even very large hash sets are able to execute contains()
extremely quickly.
If performance is not important, you can code the gist of it into one line:
if (Arrays.asList(12, 16, 19).contains(x))
but know that it will create a new ArrayList
every time it executes.
What about providing a custom N-Factor authentication mechanism?
Before combining available methods, let's assume we can perform the following:
1) Hard-code inside the Java program
2) Store in a .properties file
3) Ask user to type password from command line
4) Ask user to type password from a form
5) Ask user to load a password-file from command line or a form
6) Provide the password through network
7) many alternatives (eg Draw A Secret, Fingerprint, IP-specific, bla bla bla)
1st option: We could make things more complicated for an attacker by using obfuscation, but this is not considered a good countermeasure. A good coder can easily understand how it works if he/she can access the file. We could even export a per-user binary (or just the obfuscation part or key-part), so an attacker must have access to this user-specific file, not another distro. Again, we should find a way to change passwords, eg by recompiling or using reflection to on-the-fly change class behavior.
2nd option: We can store the password in the .properties file in an encrypted format, so it's not directly visible from an attacker (just like jasypt does). If we need a password manager we'll need a master password too which again should be stored somewhere - inside a .class file, the keystore, kernel, another file or even in memory - all have their pros and cons.
But, now users will just edit the .properties file for password change.
3rd option: type the password when running from command line e.g. java -jar /myprogram.jar -p sdflhjkiweHIUHIU8976hyd
.
This doesn't require the password to be stored and will stay in memory. However, history
commands and OS logs, may be your worst enemy here.
To change passwords on-the-fly, you will need to implement some methods (eg listen for console inputs, RMI, sockets, REST bla bla bla), but the password will always stay in memory.
One can even temporarily decrypt it only when required -> then delete the decrypted, but always keep the encrypted password in memory. Unfortunately, the aforementioned method does not increase security against unauthorized in-memory access, because the person who achieves that, will probably have access to the algorithm, salt and any other secrets being used.
4th option: provide the password from a custom form, rather than the command line. This will circumvent the problem of logging exposure.
5th option: provide a file as a password stored previously on a another medium -> then hard delete file. This will again circumvent the problem of logging exposure, plus no typing is required that could be shoulder-surfing stolen. When a change is required, provide another file, then delete again.
6th option: again to avoid shoulder-surfing, one can implement an RMI method call, to provide the password (through an encrypted channel) from another device, eg via a mobile phone. However, you now need to protect your network channel and access to the other device.
I would choose a combination of the above methods to achieve maximum security so one would have to access the .class files, the property file, logs, network channel, shoulder surfing, man in the middle, other files bla bla bla. This can be easily implemented using a XOR operation between all sub_passwords to produce the actual password.
We can't be protected from unauthorized in-memory access though, this can only be achieved by using some access-restricted hardware (eg smartcards, HSMs, SGX), where everything is computed into them, without anyone, even the legitimate owner being able to access decryption keys or algorithms. Again, one can steal this hardware too, there are reported side-channel attacks that may help attackers in key extraction and in some cases you need to trust another party (eg with SGX you trust Intel). Of course, situation may worsen when secure-enclave cloning (de-assembling) will be possible, but I guess this will take some years to be practical.
Also, one may consider a key sharing solution where the full key is split between different servers. However, upon reconstruction, the full key can be stolen. The only way to mitigate the aforementioned issue is by secure multiparty computation.
We should always keep in mind that whatever the input method, we need to ensure we are not vulnerable from network sniffing (MITM attacks) and/or key-loggers.
INSERT INTO `table` ( `data` , `date` ) VALUES('".$data."',NOW()+INTERVAL 1 DAY);
For enable PHP Extension intl , follow the Steps..
kindly remove the starting semicolon ( ; )
Like :
;extension=php_intl.dll
to
extension=php_intl.dll
Save the xampp/php/php.ini file.
Hope its work..Cheers..
In my case, I was trying to find out if any library I was including in my project was redefining my window.player
. So, at the begining of my code, I just did:
Object.defineProperty(window, 'player', {
get: () => this._player,
set: v => {
console.log('window.player has been redefined!');
this._player = v;
}
});
Hello you can make use of input and output. Input let you to pass variable form parent to child. Output the same but from child to parent.
The easiest way is to pass "startdate" and "endDate" as input
<calendar [startDateInCalendar]="startDateInSearch" [endDateInCalendar]="endDateInSearch" ></calendar>
In this way you have your startdate and enddate directly in search page. Let me know if it works, or think another way. Thanks
To get a timestamp
from Date()
, you'll need to divide getTime()
by 1000
, i.e. :
Date currentDate = new Date();
currentDate.getTime() / 1000;
// 1397132691
or simply:
long unixTime = System.currentTimeMillis() / 1000L;
Tags and Elements are not the same.
Elements
They are the pieces themselves, i.e. a paragraph is an element, or a header is an element, even the body is an element. Most elements can contain other elements, as the body element would contain header elements, paragraph elements, in fact pretty much all of the visible elements of the DOM.
Eg:
<p>This is the <span>Home</span> page</p>
Tags
Tags are not the elements themselves, rather they're the bits of text you use to tell the computer where an element begins and ends. When you 'mark up' a document, you generally don't want those extra notes that are not really part of the text to be presented to the reader. HTML borrows a technique from another language, SGML, to provide an easy way for a computer to determine which parts are "MarkUp" and which parts are the content. By using '<' and '>' as a kind of parentheses, HTML can indicate the beginning and end of a tag, i.e. the presence of '<' tells the browser 'this next bit is markup, pay attention'.
The browser sees the letters '
' and decides 'A new paragraph is starting, I'd better start a new line and maybe indent it'. Then when it sees '
' it knows that the paragraph it was working on is finished, so it should break the line there before going on to whatever is next.- Opening tag.
- Closing tagYou can use the onchange event:
<form name="myform" id="myform" action="action.php">
<input type="hidden" name="myinput" value="0" onchange="this.form.submit()"/>
<input type="text" name="message" value="" />
<input type="submit" name="submit" onclick="DoSubmit()" />
</form>
You can set the page margin to a size that's too small to contain the text in order to disable this (borrowing from awe's answer):
@page {
size: auto; /* auto is the initial value */
margin: 0mm; /* this affects the margin in the printer settings */
}
html {
background-color: #FFFFFF;
margin: 0px; /* this affects the margin on the HTML before sending to printer */
}
body {
border: solid 1px blue;
margin: 10mm 15mm 10mm 15mm; /* margin you want for the content */
}
_x000D_
<ol>
<li>
<a href="data:,No Javascript :-(" target="_blank">Middle-click to open in new tab</a>
</li>
<li>
<a href="javascript:print()">Print</a>
</li>
</ol><!-- Hack to work around stack snippet restrictions --><script type=application/javascript>document.links[0].href="data:text/html;charset=utf-8,"+encodeURIComponent('<!doctype html>'+document.documentElement.outerHTML)</script>
_x000D_
You can add a mozNoMarginBoxes
attribute to the <html>
tag to prevent the URL, page numbers and other things Firefox adds to the page margin from being printed.
It is working in Firefox 29 and onwards. You can see a screen shot of the difference here, or see here for a live example.
Note that the mozDisallowSelectionPrint
attribute in the example is not required to remove the text from the margins; see What does the mozdisallowselectionprint attribute in PDF.js do?.
Unfortunately, there seems to be no way to resolve this problem in Internet Explorer, so you'll have to resort to PDF or ask users to disable margin texts.
The same goes for Safari; according to a comment by @Luiz Perez, the most recent versions of Safari (8, 9.1 and 10) still do not support @page
for suppressing margin texts.
I can't find anything on Edge and I don't have a Windows 10 installation available to test.
As @Graham42 said, from version 2.1 mouse options has been renamed but you can use the mouse with any version of tmux adding this to your ~/.tmux.conf:
Bash shells:
is_pre_2_1="[[ $(tmux -V | cut -d' ' -f2) < 2.1 ]] && echo true || echo false"
if-shell "$is_pre_2_1" "setw -g mode-mouse on; set -g mouse-resize-pane on;\
set -g mouse-select-pane on; set -g mouse-select-window on" "set -g mouse on"
Sh (Bourne shell) shells:
is_pre_2_1="tmux -V | cut -d' ' -f2 | awk '{print ($0 < 2.1) ? "true" : "false"}'"
if-shell "$is_pre_2_1" "setw -g mode-mouse on; set -g mouse-resize-pane on;\
set -g mouse-select-pane on; set -g mouse-select-window on" "set -g mouse on"
Hope this helps
TLS client certificates are not sent in HTTP headers. They are transmitted by the client as part of the TLS handshake, and the server will typically check the validity of the certificate during the handshake as well.
If the certificate is accepted, most web servers can be configured to add headers for transmitting the certificate or information contained on the certificate to the application. Environment variables are populated with certificate information in Apache and Nginx which can be used in other directives for setting headers.
As an example of this approach, the following Nginx config snippet will validate a client certificate, and then set the SSL_CLIENT_CERT
header to pass the entire certificate to the application. This will only be set when then certificate was successfully validated, so the application can then parse the certificate and rely on the information it bears.
server {
listen 443 ssl;
server_name example.com;
ssl_certificate /path/to/chainedcert.pem; # server certificate
ssl_certificate_key /path/to/key; # server key
ssl_client_certificate /path/to/ca.pem; # client CA
ssl_verify_client on;
proxy_set_header SSL_CLIENT_CERT $ssl_client_cert;
location / {
proxy_pass http://localhost:3000;
}
}
I had this issue for an app that was strongly named then had to change it in order to reference a non-strongly named assembly, so I unchecked 'Sign the assembly' in the project properties Signing section but it still complained. I figured it had to be an artifact somewhere causing the problem since I did everything else correctly and it was just that. I found and removed the line: [assembly: AssemblyKeyFile("yourkeyfilename.snk")] from its assemblyInfo.cs file. Then no build complaints after that.
MySQL recommends using indexes for a variety of reasons including elimination of rows between conditions: http://dev.mysql.com/doc/refman/5.0/en/mysql-indexes.html
This makes your datetime column an excellent candidate for an index if you are going to be using it in conditions frequently in queries. If your only condition is BETWEEN NOW() AND DATE_ADD(NOW(), INTERVAL 30 DAY)
and you have no other index in the condition, MySQL will have to do a full table scan on every query. I'm not sure how many rows are generated in 30 days, but as long as it's less than about 1/3 of the total rows it will be more efficient to use an index on the column.
Your question about creating an efficient database is very broad. I'd say to just make sure that it's normalized and all appropriate columns are indexed (i.e. ones used in joins and where clauses).
adb shell getprop ro.build.version.sdk
If you want to see the whole list of parameters just type:
adb shell getprop
I've created tutorial on my page https://madebydenis.com/ajax-load-posts-on-wordpress/ about implementing this on Twenty Sixteen theme, so feel free to check it out :)
I've tested this on Twenty Fifteen and it's working, so it should be working for you.
In index.php (assuming that you want to show the posts on the main page, but this should work even if you put it in a page template) I put:
<div id="ajax-posts" class="row">
<?php
$postsPerPage = 3;
$args = array(
'post_type' => 'post',
'posts_per_page' => $postsPerPage,
'cat' => 8
);
$loop = new WP_Query($args);
while ($loop->have_posts()) : $loop->the_post();
?>
<div class="small-12 large-4 columns">
<h1><?php the_title(); ?></h1>
<p><?php the_content(); ?></p>
</div>
<?php
endwhile;
wp_reset_postdata();
?>
</div>
<div id="more_posts">Load More</div>
This will output 3 posts from category 8 (I had posts in that category, so I used it, you can use whatever you want to). You can even query the category you're in with
$cat_id = get_query_var('cat');
This will give you the category id to use in your query. You could put this in your loader (load more div), and pull with jQuery like
<div id="more_posts" data-category="<?php echo $cat_id; ?>">>Load More</div>
And pull the category with
var cat = $('#more_posts').data('category');
But for now, you can leave this out.
Next in functions.php I added
wp_localize_script( 'twentyfifteen-script', 'ajax_posts', array(
'ajaxurl' => admin_url( 'admin-ajax.php' ),
'noposts' => __('No older posts found', 'twentyfifteen'),
));
Right after the existing wp_localize_script
. This will load WordPress own admin-ajax.php so that we can use it when we call it in our ajax call.
At the end of the functions.php file I added the function that will load your posts:
function more_post_ajax(){
$ppp = (isset($_POST["ppp"])) ? $_POST["ppp"] : 3;
$page = (isset($_POST['pageNumber'])) ? $_POST['pageNumber'] : 0;
header("Content-Type: text/html");
$args = array(
'suppress_filters' => true,
'post_type' => 'post',
'posts_per_page' => $ppp,
'cat' => 8,
'paged' => $page,
);
$loop = new WP_Query($args);
$out = '';
if ($loop -> have_posts()) : while ($loop -> have_posts()) : $loop -> the_post();
$out .= '<div class="small-12 large-4 columns">
<h1>'.get_the_title().'</h1>
<p>'.get_the_content().'</p>
</div>';
endwhile;
endif;
wp_reset_postdata();
die($out);
}
add_action('wp_ajax_nopriv_more_post_ajax', 'more_post_ajax');
add_action('wp_ajax_more_post_ajax', 'more_post_ajax');
Here I've added paged key in the array, so that the loop can keep track on what page you are when you load your posts.
If you've added your category in the loader, you'd add:
$cat = (isset($_POST['cat'])) ? $_POST['cat'] : '';
And instead of 8, you'd put $cat
. This will be in the $_POST
array, and you'll be able to use it in ajax.
Last part is the ajax itself. In functions.js I put inside the $(document).ready();
enviroment
var ppp = 3; // Post per page
var cat = 8;
var pageNumber = 1;
function load_posts(){
pageNumber++;
var str = '&cat=' + cat + '&pageNumber=' + pageNumber + '&ppp=' + ppp + '&action=more_post_ajax';
$.ajax({
type: "POST",
dataType: "html",
url: ajax_posts.ajaxurl,
data: str,
success: function(data){
var $data = $(data);
if($data.length){
$("#ajax-posts").append($data);
$("#more_posts").attr("disabled",false);
} else{
$("#more_posts").attr("disabled",true);
}
},
error : function(jqXHR, textStatus, errorThrown) {
$loader.html(jqXHR + " :: " + textStatus + " :: " + errorThrown);
}
});
return false;
}
$("#more_posts").on("click",function(){ // When btn is pressed.
$("#more_posts").attr("disabled",true); // Disable the button, temp.
load_posts();
});
Saved it, tested it, and it works :)
Images as proof (don't mind the shoddy styling, it was done quickly). Also post content is gibberish xD
UPDATE
For 'infinite load' instead on click event on the button (just make it invisible, with visibility: hidden;
) you can try with
$(window).on('scroll', function () {
if ($(window).scrollTop() + $(window).height() >= $(document).height() - 100) {
load_posts();
}
});
This should run the load_posts()
function when you're 100px from the bottom of the page. In the case of the tutorial on my site you can add a check to see if the posts are loading (to prevent firing of the ajax twice), and you can fire it when the scroll reaches the top of the footer
$(window).on('scroll', function(){
if($('body').scrollTop()+$(window).height() > $('footer').offset().top){
if(!($loader.hasClass('post_loading_loader') || $loader.hasClass('post_no_more_posts'))){
load_posts();
}
}
});
Now the only drawback in these cases is that you could never scroll to the value of $(document).height() - 100
or $('footer').offset().top
for some reason. If that should happen, just increase the number where the scroll goes to.
You can easily check it by putting console.log
s in your code and see in the inspector what they throw out
$(window).on('scroll', function () {
console.log($(window).scrollTop() + $(window).height());
console.log($(document).height() - 100);
if ($(window).scrollTop() + $(window).height() >= $(document).height() - 100) {
load_posts();
}
});
And just adjust accordingly ;)
Hope this helps :) If you have any questions just ask.
<?php
//None HttpOnly cookie:
setcookie("abc", "test", NULL, NULL, NULL, NULL, FALSE);
//HttpOnly cookie:
setcookie("abc", "test", NULL, NULL, NULL, NULL, TRUE);
?>
If you're like me you just want to modify some of the colors in AppCompat, and the only color you need to uniquely change in the dialog is the background. Then all you need to do is set a color for colorBackgroundFloating
.
Here's my basic theme that simply modifies some colors with no nested themes:
<style name="AppTheme" parent="Theme.AppCompat">
<item name="colorPrimary">@color/theme_colorPrimary</item>
<item name="colorPrimaryDark">@color/theme_colorPrimaryDark</item>
<item name="colorAccent">@color/theme_colorAccent</item>
<item name="colorControlActivated">@color/theme_colorControlActivated</item>
<item name="android:windowBackground">@color/theme_bg</item>
<item name="colorBackgroundFloating">@color/theme_dialog_bg</item><!-- Dialog background color -->
<item name="colorButtonNormal">@color/theme_colorPrimary</item>
<item name="colorControlHighlight">@color/theme_colorAccent</item>
</style>
You can do the following:
set -- xorg-x11-fonts*
if [ -f "$1" ]; then
printf "BLAH"
fi
This works with sh and derivates: ksh and bash. It doesn't create any sub-shell. $(..)and `...` commands used in other solutions create a sub-shell : they fork a process, and they are inefficient. Of course it works with several files, and this solution can be the fastest, or second to the fastest one.
It works too when there's no matches. There isn't need to use nullglob as one of the commentators say. $1 will contain the origintal test name, therefore the test -f $1 won't success, because the $1 file doesn't exist.
npm install -g @angular/cli
npm install -g @angular/cli@latest
ng --version
See documentation.
This will do what you are looking for in C# (WebDriver/Selenium 2.0)
var browser = new FirefoxDriver();
var overallTimeout = Timespan.FromSeconds(10);
var sleepCycle = TimeSpan.FromMiliseconds(50);
var wait = new WebDriverWait(new SystemClock(), browser, overallTimeout, sleepCycle);
var hasTimedOut = wait.Until(_ => /* here goes code that looks for the map */);
And never use Thread.Sleep because it makes your tests unreliable
msgbox ("Message goes here",0+16,"Title goes here")
if the user is supposed to make a decision the variable can be added like this.
variable=msgbox ("Message goes here",0+16,"Title goes here")
The numbers in the middle vary what the message box looks like. Here is the list
0 - ok button only
1 - ok and cancel
2 - abort, retry and ignore
3 - yes no and cancel
4 - yes and no
5 - retry and cancel
TO CHANGE THE SYMBOL (RIGHT NUMBER)
16 - critical message icon
32 - warning icon
48 - warning message
64 - info message
DEFAULT BUTTON
0 = vbDefaultButton1 - First button is default
256 = vbDefaultButton2 - Second button is default
512 = vbDefaultButton3 - Third button is default
768 = vbDefaultButton4 - Fourth button is default
SYSTEM MODAL
4096 = System modal, alert will be on top of all applications
Note: There are some extra numbers. You just have to add them to the numbers already there like
msgbox("Hello World", 0+16+0+4096)
from https://www.instructables.com/id/The-Ultimate-VBS-Tutorial/
I dont know if this useful for you when you resize your page:
$(window).resize(function() {
if(screen.width == window.innerWidth){
alert("you are on normal page with 100% zoom");
} else if(screen.width > window.innerWidth){
alert("you have zoomed in the page i.e more than 100%");
} else {
alert("you have zoomed out i.e less than 100%");
}
});
I had this problem on Mac OS X 10.12.1 with Cordova 6.4.0 and Android Studio 2.2.3.
When I installed Android Studio it installed Platform 25, but not 24. To install 24:
Android Studio Menu > Preferences
.Appearance & Behavior > System Settings > Android SDK
Android 7.0 (Nougat) | 24
Helper to fetch multiple files from a given revision
When trying to resolve merge conflicts, this helper is very useful:
#!/usr/bin/env python3
import argparse
import os
import subprocess
parser = argparse.ArgumentParser()
parser.add_argument('revision')
parser.add_argument('files', nargs='+')
args = parser.parse_args()
toplevel = subprocess.check_output(['git', 'rev-parse', '--show-toplevel']).rstrip().decode()
for path in args.files:
file_relative = os.path.relpath(os.path.abspath(path), toplevel)
base, ext = os.path.splitext(path)
new_path = base + '.old' + ext
with open(new_path, 'w') as f:
subprocess.call(['git', 'show', '{}:./{}'.format(args.revision, path)], stdout=f)
Usage:
git-show-save other-branch file1.c path/to/file2.cpp
Outcome: the following contain the alternate versions of the files:
file1.old.c
path/to/file2.old.cpp
This way, you keep the file extension so your editor won't complain, and can easily find the old file just next to the newer one.
You simply use the destroy()
method to delete the specified widgets like this:
lbl = tk.Label(....)
btn = tk.Button(....., command=lambda: lbl.destroy())
Using this you can completely destroy the specific widgets.
If you want to remove all new line characters and replace them with some character (say comma) then you can use the following.
(Get-Content test.txt) -join ","
This works because Get-Content returns array of lines. You can see it as tokenize function available in many languages.
I personally prefer using the following code if it is for a single link. Otherwise it's probably best if you create a function with similar code.
onclick="this.target='_blank';"
I started using that to bypass the W3C's XHTML strict test.
If you want to have transparent background and android:outlineProvider="bounds"
doesn't work for you, you can create custom ViewOutlineProvider:
class TransparentOutlineProvider extends ViewOutlineProvider {
@Override
public void getOutline(View view, Outline outline) {
ViewOutlineProvider.BACKGROUND.getOutline(view, outline);
Drawable background = view.getBackground();
float outlineAlpha = background == null ? 0f : background.getAlpha()/255f;
outline.setAlpha(outlineAlpha);
}
}
And set this provider to your transparent view:
transparentView.setOutlineProvider(new TransparentOutlineProvider());
Sources: https://code.google.com/p/android/issues/detail?id=78248#c13
[EDIT] Documentation of Drawable.getAlpha() says that it is specific to how the Drawable threats the alpha. It is possible that it will always return 255. In this case you can provide the alpha manually:
class TransparentOutlineProvider extends ViewOutlineProvider {
private float mAlpha;
public TransparentOutlineProvider(float alpha) {
mAlpha = alpha;
}
@Override
public void getOutline(View view, Outline outline) {
ViewOutlineProvider.BACKGROUND.getOutline(view, outline);
outline.setAlpha(mAlpha);
}
}
If your view background is a StateListDrawable with default color #DDFF0000 that is with alpha DDx0/FFx0 == 0.86
transparentView.setOutlineProvider(new TransparentOutlineProvider(0.86f));
<context:property-placeholder ... />
is the XML equivalent to the PropertyPlaceholderConfigurer. So, prefer that. The <util:properties/>
simply factories a java.util.Properties instance that you can inject.
In Spring 3.1 (not 3.0...) you can do something like this:
@Configuration
@PropertySource("/foo/bar/services.properties")
public class ServiceConfiguration {
@Autowired Environment environment;
@Bean public javax.sql.DataSource dataSource( ){
String user = this.environment.getProperty("ds.user");
...
}
}
In Spring 3.0, you can "access" properties defined using the PropertyPlaceHolderConfigurer mechanism using the SpEl annotations:
@Value("${ds.user}") private String user;
If you want to remove the XML all together, simply register the PropertyPlaceholderConfigurer manually using Java configuration. I prefer the 3.1 approach. But, if youre using the Spring 3.0 approach (since 3.1's not GA yet...), you can now define the above XML like this:
@Configuration
public class MySpring3Configuration {
@Bean
public static PropertyPlaceholderConfigurer configurer() {
PropertyPlaceholderConfigurer ppc = ...
ppc.setLocations(...);
return ppc;
}
@Bean
public class DataSource dataSource(
@Value("${ds.user}") String user,
@Value("${ds.pw}") String pw,
...) {
DataSource ds = ...
ds.setUser(user);
ds.setPassword(pw);
...
return ds;
}
}
Note that the PPC is defined using a static
bean definition method. This is required to make sure the bean is registered early, because the PPC is a BeanFactoryPostProcessor
- it can influence the registration of the beans themselves in the context, so it necessarily has to be registered before everything else.
tolist()
works fine even if encountered a nested array, say a pandas DataFrame
;
my_list = [0,1,2,3,4,5,4,3,2,1,0]
my_dt = pd.DataFrame(my_list)
new_list = [i[0] for i in my_dt.values.tolist()]
print(type(my_list),type(my_dt),type(new_list))
Here is a sample implementation:
import java.util.*;
public class MyBSTree<K,V> implements MyTree<K,V>{
private BSTNode<K,V> _root;
private int _size;
private Comparator<K> _comparator;
private int mod = 0;
public MyBSTree(Comparator<K> comparator){
_comparator = comparator;
}
public Node<K,V> root(){
return _root;
}
public int size(){
return _size;
}
public boolean containsKey(K key){
if(_root == null){
return false;
}
BSTNode<K,V> node = _root;
while (node != null){
int comparison = compare(key, node.key());
if(comparison == 0){
return true;
}else if(comparison <= 0){
node = node._left;
}else {
node = node._right;
}
}
return false;
}
private int compare(K k1, K k2){
if(_comparator != null){
return _comparator.compare(k1,k2);
}
else {
Comparable<K> comparable = (Comparable<K>)k1;
return comparable.compareTo(k2);
}
}
public V get(K key){
Node<K,V> node = node(key);
return node != null ? node.value() : null;
}
private BSTNode<K,V> node(K key){
if(_root != null){
BSTNode<K,V> node = _root;
while (node != null){
int comparison = compare(key, node.key());
if(comparison == 0){
return node;
}else if(comparison <= 0){
node = node._left;
}else {
node = node._right;
}
}
}
return null;
}
public void add(K key, V value){
if(key == null){
throw new IllegalArgumentException("key");
}
if(_root == null){
_root = new BSTNode<K, V>(key, value);
}
BSTNode<K,V> prev = null, curr = _root;
boolean lastChildLeft = false;
while(curr != null){
int comparison = compare(key, curr.key());
prev = curr;
if(comparison == 0){
curr._value = value;
return;
}else if(comparison < 0){
curr = curr._left;
lastChildLeft = true;
}
else{
curr = curr._right;
lastChildLeft = false;
}
}
mod++;
if(lastChildLeft){
prev._left = new BSTNode<K, V>(key, value);
}else {
prev._right = new BSTNode<K, V>(key, value);
}
}
private void removeNode(BSTNode<K,V> curr){
if(curr.left() == null && curr.right() == null){
if(curr == _root){
_root = null;
}else{
if(curr.isLeft()) curr._parent._left = null;
else curr._parent._right = null;
}
}
else if(curr._left == null && curr._right != null){
curr._key = curr._right._key;
curr._value = curr._right._value;
curr._left = curr._right._left;
curr._right = curr._right._right;
}
else if(curr._left != null && curr._right == null){
curr._key = curr._left._key;
curr._value = curr._left._value;
curr._right = curr._left._right;
curr._left = curr._left._left;
}
else { // both left & right exist
BSTNode<K,V> x = curr._left;
// find right-most node of left sub-tree
while (x._right != null){
x = x._right;
}
// move that to current
curr._key = x._key;
curr._value = x._value;
// delete duplicate data
removeNode(x);
}
}
public V remove(K key){
BSTNode<K,V> curr = _root;
V val = null;
while(curr != null){
int comparison = compare(key, curr.key());
if(comparison == 0){
val = curr._value;
removeNode(curr);
mod++;
break;
}else if(comparison < 0){
curr = curr._left;
}
else{
curr = curr._right;
}
}
return val;
}
public Iterator<MyTree.Node<K,V>> iterator(){
return new MyIterator();
}
private class MyIterator implements Iterator<Node<K,V>>{
int _startMod;
Stack<BSTNode<K,V>> _stack;
public MyIterator(){
_startMod = MyBSTree.this.mod;
_stack = new Stack<BSTNode<K, V>>();
BSTNode<K,V> node = MyBSTree.this._root;
while (node != null){
_stack.push(node);
node = node._left;
}
}
public void remove(){
throw new UnsupportedOperationException();
}
public boolean hasNext(){
if(MyBSTree.this.mod != _startMod){
throw new ConcurrentModificationException();
}
return !_stack.empty();
}
public Node<K,V> next(){
if(MyBSTree.this.mod != _startMod){
throw new ConcurrentModificationException();
}
if(!hasNext()){
throw new NoSuchElementException();
}
BSTNode<K,V> node = _stack.pop();
BSTNode<K,V> x = node._right;
while (x != null){
_stack.push(x);
x = x._left;
}
return node;
}
}
@Override
public String toString(){
if(_root == null) return "[]";
return _root.toString();
}
private static class BSTNode<K,V> implements Node<K,V>{
K _key;
V _value;
BSTNode<K,V> _left, _right, _parent;
public BSTNode(K key, V value){
if(key == null){
throw new IllegalArgumentException("key");
}
_key = key;
_value = value;
}
public K key(){
return _key;
}
public V value(){
return _value;
}
public Node<K,V> left(){
return _left;
}
public Node<K,V> right(){
return _right;
}
public Node<K,V> parent(){
return _parent;
}
boolean isLeft(){
if(_parent == null) return false;
return _parent._left == this;
}
boolean isRight(){
if(_parent == null) return false;
return _parent._right == this;
}
@Override
public boolean equals(Object o){
if(o == null){
return false;
}
try{
BSTNode<K,V> node = (BSTNode<K,V>)o;
return node._key.equals(_key) && ((_value == null && node._value == null) || (_value != null && _value.equals(node._value)));
}catch (ClassCastException ex){
return false;
}
}
@Override
public int hashCode(){
int hashCode = _key.hashCode();
if(_value != null){
hashCode ^= _value.hashCode();
}
return hashCode;
}
@Override
public String toString(){
String leftStr = _left != null ? _left.toString() : "";
String rightStr = _right != null ? _right.toString() : "";
return "["+leftStr+" "+_key+" "+rightStr+"]";
}
}
}
Use root tag
as shape
instead of selector
in your shape.xml
file, and it will resolve your problem!
You can try Salar.Bois serializer which has a decent performance. Its focus is on payload size but it also offers good performance.
There are benchmarks in the Github page if you wish to see and compare the results by yourself.
You can do :
1) javac -cp /path/to/jar/file Myprogram.java
2) java -cp .:/path/to/jar/file Myprogram
So, lets suppose your current working directory
in terminal is src/Report/
javac -cp src/external/myfile.jar Reporter.java
java -cp .:src/external/myfile.jar Reporter
Take a look here to setup Classpath
Create Generated Column
String generatedColumns[] = { "ID" };
Pass this geneated Column to your statement
PreparedStatement stmtInsert = conn.prepareStatement(insertSQL, generatedColumns);
Use ResultSet
object to fetch the GeneratedKeys on Statement
ResultSet rs = stmtInsert.getGeneratedKeys();
if (rs.next()) {
long id = rs.getLong(1);
System.out.println("Inserted ID -" + id); // display inserted record
}
SleepEx
function (see http://msdn.microsoft.com/en-us/library/ms686307.aspx) is the best choise if your program directly or indirectly creates windows (for example use some COM objects). In the simples cases you can also use Sleep
.
my two cents about logic:
syntax is "old date" - :"new date", so:
SELECT TIMESTAMPDIFF(SECOND, '2018-11-15 15:00:00', '2018-11-15 15:00:30')
gives 30,
SELECT TIMESTAMPDIFF(SECOND, '2018-11-15 15:00:55', '2018-11-15 15:00:15')
gives: -40
In a component below <Router>
Just add a React Hook (in case you are not using a React class)
React.useEffect(() => {
window.scrollTo(0, 0);
}, [props.location]);
IntentService extends Service class which clearly means that IntentService
is intentionally made for same purpose.
So what is the purpose ?
`IntentService's purpose is to make our job easier to run background tasks without even worrying about
Creation of worker thread
Queuing the processing multiple-request one by one (Threading
)
Service
So NO, Service
can do any task which an IntentService
would do. If your requirements fall under the above-mentioned criteria, then you don't have to write those logics in the Service
class.
So don't reinvent the wheel because IntentService
is the invented wheel.
The Service runs on the UI thread while an IntentService runs on a separate thread
When you want to perform multiple background tasks one by one which exists beyond the scope of an Activity then the IntentService
is perfect.
IntentService
is made from Service
A normal service runs on the UI Thread(Any Android Component type runs on UI thread by default eg Activity
, BroadcastReceiver
, ContentProvider
and Service
). If you have to do some work that may take a while to complete then you have to create a thread. In the case of multiple requests, you will have to deal with synchronization
.
IntentService
is given some default implementation which does those tasks for you.
According to developer page
IntentService
creates a Worker Thread
IntentService
creates a Work Queue which sends request to onHandleIntent()
method one by one
IntentService
calls stopSelf()
methodonBind()
method which is nullonStartCommand()
which sends Intent
request to WorkQueue and eventually to onHandleIntent()
I to had a similar doubt what I got to know was getActivity()
returns the Activity
to which the fragment is associated.
The getActivity()
method is used generally in static fragment as the associated activity will not be static and non static member cannot be used in static member.
If you want to do it with phpmyadmin interface:
Select the table -> Go to structure tab -> On the row corresponding to the column you want, click on the icon with a key
The fastest & best implementation of omitting primes:
def PrimeRanges2(a, b):
arr = range(a, b+1)
up = int(math.sqrt(b)) + 1
for d in range(2, up):
arr = omit_multi(arr, d)
How about this:
var imageUrl = 'https://cdn.sstatic.net/Sites/stackoverflow/img/sprites.svg';
var blob = null;
var xhr = new XMLHttpRequest();
xhr.open('GET', imageUrl, true);
xhr.responseType = 'blob';
xhr.onload = function()
{
blob = xhr.response;
console.log(blob, blob.size);
}
xhr.send();
http://qnimate.com/javascript-create-file-object-from-url/
due to Same Origin Policy, only work under same origin
There are various scripts floating around that will do that depending on how crazy you want to get. I would personally use Pete Finnigan's find_all_privs script.
If you want to write it yourself, the query gets rather challenging. Users can be granted system privileges which are visible in DBA_SYS_PRIVS
. They can be granted object privileges which are visible in DBA_TAB_PRIVS
. And they can be granted roles which are visible in DBA_ROLE_PRIVS
(roles can be default or non-default and can require a password as well, so just because a user has been granted a role doesn't mean that the user can necessarily use the privileges he acquired through the role by default). But those roles can, in turn, be granted system privileges, object privileges, and additional roles which can be viewed by looking at ROLE_SYS_PRIVS
, ROLE_TAB_PRIVS
, and ROLE_ROLE_PRIVS
. Pete's script walks through those relationships to show all the privileges that end up flowing to a user.
It will work for you:
#ul_top_hypers li {
display: inline-block;
}
I think this will do:
Dim filename As String
filename = Application.GetOpenFilename
Try this one...
SELECT MAX(salary) FROM employee WHERE salary NOT IN (SELECT * FROM employee ORDERBY salary DESC LIMIT n-1)
As there's already an existing repository, running
git config --bool core.bare true
on the remote repository should suffice
From the core.bare documentation
If true (bare = true), the repository is assumed to be bare with no working directory associated. If this is the case a number of commands that require a working directory will be disabled, such as git-add or git-merge (but you will be able to push to it).
This setting is automatically guessed by git-clone or git-init when the repository is created. By default a repository that ends in "/.git" is assumed to be not bare (bare = false), while all other repositories are assumed to be bare (bare = true).
If you are using a frontend for SVN like TortoiseSVN, or some sort of IDE integration, there should also be an ignore option in the same menu are as the commit/add operation.
In addition to reg.exe, I highly recommend that you also check out powershell, its vastly more capable in its registry handling.
<input type='text' minlength=3 /><br />
if browser supports html5,
it will automatical be validate attributes(minlength) in tag
but Safari(iOS) doesn't working
As I can see, you are comparing the message with the empty string using ==.
Its very hard to write the full code, but I can tell the flow of code - first, create db class & method inide that which will return the connection. second, create a servelet(ex-login.java) & import that db class onto that servlet. third, create instance of imported db class with the help of new operator & call the connection method of that db class. fourth, creaet prepared statement & execute statement & put this code in try catch block for exception handling.Use if-else condition in the try block to navigate your login page based on success or failure.
I hope, it will help you. If any problem, then please revert.
Nikhil Pahariya
If you are using maven try to maven update all projects and force for snapshots. It will clean as well and rebuilt all classpath.. It solved my problem..
To go from SCRATCH with SQLite DB to importing the CSV into a table:
sqlite3 <your_db_file_name>
*It will be created as an empty file.CREATE TABLE <table_Name> (<field_name1> <Type>, <field_name2> <type>);
Once you have the table created and the columns match your data from the file then you can do the above...
.mode csv <table_name>
.import <filename> <table_name>
My simple, simple, simple approach! =D
Code
string_to_test = "The criminals stole $1,000,000 in jewels."
chars_to_check = ["$", ",", "0", "1", "2", "3", "4", "5", "6", "7", "8", "9"]
for char in chars_to_check:
if char in string_to_test:
print("Char \"" + char + "\" detected!")
Output
Char "$" detected!
Char "," detected!
Char "0" detected!
Char "1" detected!
Thanks!
I often use this pattern and recommend you to use it as well:
class MyMap : public std::map<int, int>
{
public:
MyMap()
{
//either
insert(make_pair(1, 2));
insert(make_pair(3, 4));
insert(make_pair(5, 6));
//or
(*this)[1] = 2;
(*this)[3] = 4;
(*this)[5] = 6;
}
} const static my_map;
Sure it is not very readable, but without other libs it is best we can do. Also there won't be any redundant operations like copying from one map to another like in your attempt.
This is even more useful inside of functions: Instead of:
void foo()
{
static bool initComplete = false;
static Map map;
if (!initComplete)
{
initComplete = true;
map= ...;
}
}
Use the following:
void bar()
{
struct MyMap : Map
{
MyMap()
{
...
}
} static mymap;
}
Not only you don't need here to deal with boolean variable anymore, you won't have hidden global variable that is checked if initializer of static variable inside function was already called.
if (myReader["Additional"] != DBNull.Value)
{
ltlAdditional.Text = "contains data";
}
else
{
ltlAdditional.Text = "is null";
}
1- Open file:
C:\wamp\bin\mysql\mysql5.5.24\my.ini
2- Look for [mysqld] entry and append:
character-set-server = utf8
skip-character-set-client-handshake
The whole view should look like:
[mysqld]
port=3306
character-set-server = utf8
skip-character-set-client-handshake
3- Restart MySQL service!
if it is possible to create the database connection in the same file where the credentials are stored. Inline the credentials in the connect statement.
mysql_connect("localhost", "me", "mypass");
Otherwise it is best to unset the credentials after the connect statement, because credentials that are not in memory, can't be read from memory ;)
include("/outside-webroot/db_settings.php");
mysql_connect("localhost", $db_user, $db_pass);
unset ($db_user, $db_pass);
I had the same problem.please do the following it may help you: By Default List View Threshold set at only 5,000 items this is because of Sharepoint server performance.
To Change the LVT:
Click OK to save it.
A __pycache__
folder is created when you use the line:
import file_name
or try to get information from another file you have created. This makes it a little faster when running your program the second time to open the other file.
How about this:
echo "db.mycollection.findOne()" | mongo myDbName
echo "show collections" | mongo myDbName
Here is a one line lambda that also works:
df["TrueFalse"] = df['col1'].apply(lambda x: 1 if any(i in x for i in searchfor) else 0)
Input:
searchfor = ['og', 'at']
df = pd.DataFrame([('cat', 1000.0), ('hat', 2000000.0), ('dog', 1000.0), ('fog', 330000.0),('pet', 330000.0)], columns=['col1', 'col2'])
col1 col2
0 cat 1000.0
1 hat 2000000.0
2 dog 1000.0
3 fog 330000.0
4 pet 330000.0
Apply Lambda:
df["TrueFalse"] = df['col1'].apply(lambda x: 1 if any(i in x for i in searchfor) else 0)
Output:
col1 col2 TrueFalse
0 cat 1000.0 1
1 hat 2000000.0 1
2 dog 1000.0 1
3 fog 330000.0 1
4 pet 330000.0 0
In gitk --all
:
Beware that re-creating instead of modifying the existing branch will lose tracking-branch information. (This is generally not a problem for simple use-cases where there's only one remote and your local branch has the same name as the corresponding branch in the remote. See comments for more details, thanks @mbdevpl for pointing out this downside.)
It would be cool if gitk
had a feature where the dialog box had 3 options: overwrite, modify existing, or cancel.
Even if you're normally a command-line junkie like myself, git gui
and gitk
are quite nicely designed for the subset of git usage they allow. I highly recommend using them for what they're good at (i.e. selectively staging hunks into/out of the index in git gui, and also just committing. (ctrl-s to add a signed-off: line, ctrl-enter to commit.)
gitk
is great for keeping track of a few branches while you sort out your changes into a nice patch series to submit upstream, or anything else where you need to keep track of what you're in the middle of with multiple branches.
I don't even have a graphical file browser open, but I love gitk/git gui.
I like owlstead's original answer, and if you don't like the idea of creating a ByteBuffer
on every method call then you can reuse the ByteBuffer
by calling it's .clear()
and .flip()
methods:
ByteBuffer _intShifter = ByteBuffer.allocate(Integer.SIZE / Byte.SIZE)
.order(ByteOrder.LITTLE_ENDIAN);
public byte[] intToByte(int value) {
_intShifter.clear();
_intShifter.putInt(value);
return _intShifter.array();
}
public int byteToInt(byte[] data)
{
_intShifter.clear();
_intShifter.put(data, 0, Integer.SIZE / Byte.SIZE);
_intShifter.flip();
return _intShifter.getInt();
}
#include <algorithm> using namespace std; int main() { . . s.erase( remove( s.begin(), s.end(), ' ' ), s.end() ); . . }
Reference taken from this forum.
I have a feeling that the username and password that you are sending should be part of the Authorization Header. So the code below shows you how to create the Base64 string of the username and password. I also included an example of sending the POST data. In my case it was a phone_number parameter.
string credentials = Convert.ToBase64String(Encoding.ASCII.GetBytes(_username + ":" + _password));
HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(Request);
webRequest.Headers.Add("Authorization", string.Format("Basic {0}", credentials));
webRequest.ContentType = "application/x-www-form-urlencoded";
webRequest.Method = WebRequestMethods.Http.Post;
webRequest.AllowAutoRedirect = true;
webRequest.Proxy = null;
string data = "phone_number=19735559042";
byte[] dataStream = Encoding.UTF8.GetBytes(data);
request.ContentLength = dataStream.Length;
Stream newStream = webRequest.GetRequestStream();
newStream.Write(dataStream, 0, dataStream.Length);
newStream.Close();
HttpWebResponse response = (HttpWebResponse)webRequest.GetResponse();
Stream stream = response.GetResponseStream();
StreamReader streamreader = new StreamReader(stream);
string s = streamreader.ReadToEnd();
Even though there is something easy like .equals
, I'd like to point out TWO mistakes you made in your code. The first: when you go through the arrays, you say b
is true
or false
. Then you start again to check, because of the for-loop. But each time you are giving b
a value. So, no matter what happens, the value b
gets set to is always the value of the LAST for-loop. Next time, set boolean b = true
, if equal = true
, do nothing, if equal = false
, b=false
.
Secondly, you are now checking each value in array1
with each value in array2
. If I understand correctly, you only need to check the values at the same location in the array, meaning you should have deleted the second for-loop and check like this: if (array2[i] == array1[i])
. Then your code should function as well.
Your code would work like this:
public static void compareArrays(int[] array1, int[] array2) {
boolean b = true;
for (int i = 0; i < array2.length; i++) {
if (array2[i] == array1[i]) {
System.out.println("true");
} else {
b = false;
System.out.println("False");
}
}
return b;
}
But as said by other, easier would be: Arrays.equals(ary1,ary2);
In PHP an array is an array; there is no primitive vs. object consideration, so there is no comparable optimization to be had.
If you want the cells to resize depending on the content, then you must not specify a width to the table, the rows, or the cells.
If you don't want word wrap, assign the CSS style white-space: nowrap
to the cells.
It'll be easier (and more "proper", see below) if you just run your script as
myprogram /path/to/file
Then you can access the path within the script as $1
(for argument #1, similarly $2
is argument #2, etc.)
file="$1"
externalprogram "$file" [other parameters]
Or just
externalprogram "$1" [otherparameters]
If you want to extract the path from something like --file=/path/to/file
, that's usually done with the getopts
shell function. But that's more complicated than just referencing $1
, and besides, switches like --file=
are intended to be optional. I'm guessing your script requires a file name to be provided, so it doesn't make sense to pass it in an option.
The your seems a multi-array, not a JSON object.
If you want access the object like an array, you have to use some sort of key/value, such as:
var JSONObject = {
"city": ["Blankaholm, "Gamleby"],
"date": ["2012-10-23", "2012-10-22"],
"description": ["Blankaholm. Under natten har det varit inbrott", "E22 i med Gamleby. Singelolycka. En bilist har.],
"lat": ["57.586174","16.521841"],
"long": ["57.893162","16.406090"]
}
and access it with:
JSONObject.city[0] // => Blankaholm
JSONObject.date[1] // => 2012-10-22
and so on...
or
JSONObject['city'][0] // => Blankaholm
JSONObject['date'][1] // => 2012-10-22
and so on...
or, in last resort, if you don't want change your structure, you can do something like that:
var JSONObject = {
"data": [
["Blankaholm, "Gamleby"],
["2012-10-23", "2012-10-22"],
["Blankaholm. Under natten har det varit inbrott", "E22 i med Gamleby. Singelolycka. En bilist har.],
["57.586174","16.521841"],
["57.893162","16.406090"]
]
}
JSONObject.data[0][1] // => Gambleby
Python's implementation follows the IEEE-754 standard pretty well, which you can use as a guidance, but it relies on the underlying system it was compiled on, so platform differences may occur. Recently¹, a fix has been applied that allows "infinity" as well as "inf", but that's of minor importance here.
The following sections equally well apply to any language that implements IEEE floating point arithmetic correctly, it is not specific to just Python.
When dealing with infinity and greater-than >
or less-than <
operators, the following counts:
+inf
is higher than -inf
-inf
is lower than +inf
+inf
is neither higher nor lower than +inf
-inf
is neither higher nor lower than -inf
NaN
is false (inf
is neither higher, nor lower than NaN
)When compared for equality, +inf
and +inf
are equal, as are -inf
and -inf
. This is a much debated issue and may sound controversial to you, but it's in the IEEE standard and Python behaves just like that.
Of course, +inf
is unequal to -inf
and everything, including NaN
itself, is unequal to NaN
.
Most calculations with infinity will yield infinity, unless both operands are infinity, when the operation division or modulo, or with multiplication with zero, there are some special rules to keep in mind:
NaN
0.0
or -0.0
².NaN
.inf - inf
, the result is undefined: NaN
;inf - -inf
, the result is inf
;-inf - inf
, the result is -inf
;-inf - -inf
, the result is undefined: NaN
.inf + inf
, the result is inf
;inf + -inf
, the result is undefined: NaN
;-inf + inf
, the result is undefined: NaN
;-inf + -inf
, the result is -inf
.math.pow
, pow
or **
is tricky, as it doesn't behave as it should. It throws an overflow exception when the result with two real numbers is too high to fit a double precision float (it should return infinity), but when the input is inf
or -inf
, it behaves correctly and returns either inf
or 0.0
. When the second argument is NaN
, it returns NaN
, unless the first argument is 1.0
. There are more issues, not all covered in the docs.math.exp
suffers the same issues as math.pow
. A solution to fix this for overflow is to use code similar to this:
try:
res = math.exp(420000)
except OverflowError:
res = float('inf')
Note 1: as an additional caveat, that as defined by the IEEE standard, if your calculation result under-or overflows, the result will not be an under- or overflow error, but positive or negative infinity: 1e308 * 10.0
yields inf
.
Note 2: because any calculation with NaN
returns NaN
and any comparison to NaN
, including NaN
itself is false
, you should use the math.isnan
function to determine if a number is indeed NaN
.
Note 3: though Python supports writing float('-NaN')
, the sign is ignored, because there exists no sign on NaN
internally. If you divide -inf / +inf
, the result is NaN
, not -NaN
(there is no such thing).
Note 4: be careful to rely on any of the above, as Python relies on the C or Java library it was compiled for and not all underlying systems implement all this behavior correctly. If you want to be sure, test for infinity prior to doing your calculations.
¹) Recently means since version 3.2.
²) Floating points support positive and negative zero, so: x / float('inf')
keeps its sign and -1 / float('inf')
yields -0.0
, 1 / float(-inf)
yields -0.0
, 1 / float('inf')
yields 0.0
and -1/ float(-inf)
yields 0.0
. In addition, 0.0 == -0.0
is true
, you have to manually check the sign if you don't want it to be true.
As of SQL Server 2012+, you can use FORMAT(value, format [, culture ])
Where the format
param takes any valid standard format string or custom formatting string
Example:
SELECT FORMAT(GETDATE(), 'MM/dd/yyyy')
Further Reading:
Simple Console Span/Fill/Pad/Padding with automatic scaling/resizing Method and Example.
function create-console-spanner() {
# 1: left-side-text, 2: right-side-text
local spanner="";
eval printf -v spanner \'"%0.1s"\' "-"{1..$[$(tput cols)- 2 - ${#1} - ${#2}]}
printf "%s %s %s" "$1" "$spanner" "$2";
}
Example: create-console-spanner "loading graphics module" "[success]"
Now here is a full-featured-color-character-terminal-suite that does everything in regards to printing a color and style formatted string with a spanner.
# Author: Triston J. Taylor <[email protected]>
# Date: Friday, October 19th, 2018
# License: OPEN-SOURCE/ANY (NO-PRODUCT-LIABILITY OR WARRANTIES)
# Title: paint.sh
# Description: color character terminal driver/controller/suite
declare -A PAINT=([none]=`tput sgr0` [bold]=`tput bold` [black]=`tput setaf 0` [red]=`tput setaf 1` [green]=`tput setaf 2` [yellow]=`tput setaf 3` [blue]=`tput setaf 4` [magenta]=`tput setaf 5` [cyan]=`tput setaf 6` [white]=`tput setaf 7`);
declare -i PAINT_ACTIVE=1;
function paint-replace() {
local contents=$(cat)
echo "${contents//$1/$2}"
}
source <(cat <<EOF
function paint-activate() {
echo "\$@" | $(for k in ${!PAINT[@]}; do echo -n paint-replace \"\&$k\;\" \"\${PAINT[$k]}\" \|; done) cat;
}
EOF
)
source <(cat <<EOF
function paint-deactivate(){
echo "\$@" | $(for k in ${!PAINT[@]}; do echo -n paint-replace \"\&$k\;\" \"\" \|; done) cat;
}
EOF
)
function paint-get-spanner() {
(( $# == 0 )) && set -- - 0;
declare -i l=$(( `tput cols` - ${2}))
eval printf \'"%0.1s"\' "${1:0:1}"{1..$l}
}
function paint-span() {
local left_format=$1 right_format=$3
local left_length=$(paint-format -l "$left_format") right_length=$(paint-format -l "$right_format")
paint-format "$left_format";
paint-get-spanner "$2" $(( left_length + right_length));
paint-format "$right_format";
}
function paint-format() {
local VAR="" OPTIONS='';
local -i MODE=0 PRINT_FILE=0 PRINT_VAR=1 PRINT_SIZE=2;
while [[ "${1:0:2}" =~ ^-[vl]$ ]]; do
if [[ "$1" == "-v" ]]; then OPTIONS=" -v $2"; MODE=$PRINT_VAR; shift 2; continue; fi;
if [[ "$1" == "-l" ]]; then OPTIONS=" -v VAR"; MODE=$PRINT_SIZE; shift 1; continue; fi;
done;
OPTIONS+=" --"
local format="$1"; shift;
if (( MODE != PRINT_SIZE && PAINT_ACTIVE )); then
format=$(paint-activate "$format&none;")
else
format=$(paint-deactivate "$format")
fi
printf $OPTIONS "${format}" "$@";
(( MODE == PRINT_SIZE )) && printf "%i\n" "${#VAR}" || true;
}
function paint-show-pallette() {
local -i PAINT_ACTIVE=1
paint-format "Normal: &red;red &green;green &blue;blue &magenta;magenta &yellow;yellow &cyan;cyan &white;white &black;black\n";
paint-format " Bold: &bold;&red;red &green;green &blue;blue &magenta;magenta &yellow;yellow &cyan;cyan &white;white &black;black\n";
}
To print a color, that's simple enough: paint-format "&red;This is %s\n" red
And you might want to get bold later on: paint-format "&bold;%s!\n" WOW
The -l
option to the paint-format
function measures the text so you can do console font metrics operations.
The -v
option to the paint-format
function works the same as printf
but cannot be supplied with -l
Now for the spanning!
paint-span "hello " . " &blue;world"
[note: we didn't add newline terminal sequence, but the text fills the terminal, so the next line only appears to be a newline terminal sequence]
and the output of that is:
hello ............................. world
The thing is that the printf function needs a pointer as parameter. However a char is a variable that you have directly acces. A string is a pointer on the first char of the string, so you don't have to add the * because * is the identifier for the pointer of a variable.
df['First Season'].loc[(df['First Season'] > 1990)] = 1
strange that nobody has this answer, the only missing part of your code is the ['First Season'] right after df and just remove your curly brackets inside.
I have made a small demo of NumberPicker. This may not be perfect but you can use and modify the same.
public class MainActivity extends Activity implements NumberPicker.OnValueChangeListener
{
private static TextView tv;
static Dialog d ;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
tv = (TextView) findViewById(R.id.textView1);
Button b = (Button) findViewById(R.id.button11);
b.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v) {
show();
}
});
}
@Override
public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
Log.i("value is",""+newVal);
}
public void show()
{
final Dialog d = new Dialog(MainActivity.this);
d.setTitle("NumberPicker");
d.setContentView(R.layout.dialog);
Button b1 = (Button) d.findViewById(R.id.button1);
Button b2 = (Button) d.findViewById(R.id.button2);
final NumberPicker np = (NumberPicker) d.findViewById(R.id.numberPicker1);
np.setMaxValue(100);
np.setMinValue(0);
np.setWrapSelectorWheel(false);
np.setOnValueChangedListener(this);
b1.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v) {
tv.setText(String.valueOf(np.getValue()));
d.dismiss();
}
});
b2.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v) {
d.dismiss();
}
});
d.show();
}
}
activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/hello_world" />
<Button
android:id="@+id/button11"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:text="Open" />
</RelativeLayout>
dialog.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<NumberPicker
android:id="@+id/numberPicker1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="64dp" />
<Button
android:id="@+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/numberPicker1"
android:layout_marginLeft="20dp"
android:layout_marginTop="98dp"
android:layout_toRightOf="@+id/numberPicker1"
android:text="Cancel" />
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/button2"
android:layout_alignBottom="@+id/button2"
android:layout_marginRight="16dp"
android:layout_toLeftOf="@+id/numberPicker1"
android:text="Set" />
</RelativeLayout>
Edit:
under res/values/dimens.xml
<resources>
<!-- Default screen margins, per the Android Design guidelines. -->
<dimen name="activity_horizontal_margin">16dp</dimen>
<dimen name="activity_vertical_margin">16dp</dimen>
</resources>
Be sure to test any solution across different Reader preferences. A site visitor may have their browser set to open the PDF in Reader/Acrobat as opposed to the browser, e.g., by disabling the Acrobat plugin in Firefox..
I can't be sure of my results, because I have two different Acrobat plugins that Firefox recognizes due to my having different versions of Adobe Acrobat and Adobe Reader, but it does appear that you at least need to test what happens if a website visitor has their browser set to not open the PDF in the browser. It could be quite annoying when they look at what appears to be an otherwise usable web page and their browser is nagging them to open a PDF file that they think they didn't request. In some cases, the PDF file spontaneously opened in Adobe Reader, not the browser, and in other cases the browser threw up a dialog saying the file didn't exist.
I ran into such mismatches with iframe and object both, different issues for different code.
This is for simple HTML code. I haven't tried the suggested frameworks.
There are basically two ways
store the previous value of window.onload
so your code can call a previous handler if present before or after your code executes
using the addEventListener
approach (that of course Microsoft doesn't like and requires you to use another different name).
The second method will give you a bit more safety if another script wants to use window.onload
and does it without thinking to cooperation but the main assumption for Javascript is that all the scripts will cooperate like you are trying to do.
Note that a bad script that is not designed to work with other unknown scripts will be always able to break a page for example by messing with prototypes, by contaminating the global namespace or by damaging the dom.
Having the following XML:
<node>Text1<subnode/>text2</node>
How do I select either the first or the second text node via XPath?
Use:
/node/text()
This selects all text-node children of the top element (named "node") of the XML document.
/node/text()[1]
This selects the first text-node child of the top element (named "node") of the XML document.
/node/text()[2]
This selects the second text-node child of the top element (named "node") of the XML document.
/node/text()[someInteger]
This selects the someInteger-th text-node child of the top element (named "node") of the XML document. It is equivalent to the following XPath expression:
/node/text()[position() = someInteger]
code bellow, get from, goes
Controller:
int DefaultId = 1;
ViewBag.Person = db.XXXX
.ToList()
.Select(x => new SelectListItem {
Value = x.Id.ToString(),
Text = x.Name,
Selected = (x.Id == DefaultId)
});
View:
@Html.DropDownList("Person")
Note: ViewBag.Person and @Html.DropDownList("Person") name should be as in view model
Add click listener for item view in .onBindViewHolder() of your RecyclerView's adapter. get currently selected position and change color by .setBackground() for previously selected and current item
The difference between http and https is that https requests are sent over an ssl-encrypted connection. The ssl-encrypted connection must be established between the browser and the server before the browser sends the http request.
Https requests are in fact http requests that are sent over an ssl encrypted connection. If the server rejects to establish an ssl encrypted connection then the browser will have no connection to send the request over. The browser and the server will have no way of talking to each other. The browser will not be able to send the url that it wants to access and the server will not be able to respond with a redirect to another url.
So this is not possible. If you want to respond to https links, then you need an ssl certificate.
there is a very useful online tool for this, just automatically transform the table into divs:
http://www.html-cleaner.com/features/replace-html-table-tags-with-divs/
And the video that explains it: https://www.youtube.com/watch?v=R1ArAee6wEQ
I'm using this on a daily basis. I hope it helps ;)
That's a very complex question for a simple answer.
You may want to take a look at existing API frameworks, like Swagger Specification (OpenAPI), and services like apiary.io and apiblueprint.org.
Also, here's an example of the same REST API described, organized and even styled in three different ways. It may be a good start for you to learn from existing common ways.
At the very top level I think quality REST API docs require at least the following:
Also there are a lot of JSON/XML-based doc frameworks which can parse your API definition or schema and generate a convenient set of docs for you. But the choice for a doc generation system depends on your project, language, development environment and many other things.
private void jButton4ActionPerformed(java.awt.event.ActionEvent evt) {
// Submit Button
String Fname = jTextField1.getText();
String Lname = jTextField2.getText();
String Desig = jTextField3.getText();
String Nic = jTextField4.getText();
String Phone = jTextField5.getText();
String Add = jTextArea1.getText();
String Dob = jTextField6.getText();
// String Gender;
// Image
if (Fname.hashCode() == 0 || Lname.hashCode() == 0 || Desig.hashCode() == 0 || Nic.hashCode() == 0 || Phone.hashCode() == 0 || Add.hashCode() == 0)
{
JOptionPane.showMessageDialog(null, "Some fields are empty!");
}
else
{
JOptionPane.showMessageDialog(null, "OK");
}
}
Copied from the formal specification: ECMAScript 5.1 section 11.9.5
11.9.4 The Strict Equals Operator ( === )
The production EqualityExpression : EqualityExpression === RelationalExpression is evaluated as follows:
- Let lref be the result of evaluating EqualityExpression.
- Let lval be GetValue(lref).
- Let rref be the result of evaluating RelationalExpression.
- Let rval be GetValue(rref).
- Return the result of performing the strict equality comparison rval === lval. (See 11.9.6)
11.9.5 The Strict Does-not-equal Operator ( !== )
The production EqualityExpression : EqualityExpression !== RelationalExpression is evaluated as follows:
- Let lref be the result of evaluating EqualityExpression.
- Let lval be GetValue(lref).
- Let rref be the result of evaluating RelationalExpression.
- Let rval be GetValue(rref). Let r be the result of performing strict equality comparison rval === lval. (See 11.9.6)
- If r is true, return false. Otherwise, return true.
11.9.6 The Strict Equality Comparison Algorithm
The comparison x === y, where x and y are values, produces true or false. Such a comparison is performed as follows:
- If Type(x) is different from Type(y), return false.
- Type(x) is Undefined, return true.
- Type(x) is Null, return true.
- Type(x) is Number, then
- If x is NaN, return false.
- If y is NaN, return false.
- If x is the same Number value as y, return true.
- If x is +0 and y is -0, return true.
- If x is -0 and y is +0, return true.
- Return false.
- If Type(x) is String, then return true if x and y are exactly the same sequence of characters (same length and same characters in corresponding positions); otherwise, return false.
- If Type(x) is Boolean, return true if x and y are both true or both false; otherwise, return false.
- Return true if x and y refer to the same object. Otherwise, return false.
Check the localhost_yyyy_mm_dd.log
OR localhost.yyyy-mm-dd.log
logs that Tomcat creates, these typically store that type of info. I wouldn't expect the full stacktrace to be dumped to standard out.
Hope To help to -newbie as i am- Ones who uses Upsert statements in MSSQL.. (This code i used in my project on MSSQL 2008 R2 and works simply perfect..May be It's not Best Practise.. Execution time statistics shows execution time as 15 milliSeconds with insert statement)
Just set your column's "Default value or binding" field as what you decide to use as default value for your column and Also set the column as Not accept null values from design menu and create this stored Proc..
`USE [YourTable]
GO
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE PROC [dbo].[YourTableName]
@Value smallint,
@Value1 bigint,
@Value2 varchar(50),
@Value3 varchar(20),
@Value4 varchar(20),
@Value5 date,
@Value6 varchar(50),
@Value7 tinyint,
@Value8 tinyint,
@Value9 varchar(20),
@Value10 varchar(20),
@Value11 varchar(250),
@Value12 tinyint,
@Value13 varbinary(max)
-- in my project @Value13 is a photo column which storing as byte array.. --And i planned to use a default photo when there is no photo passed --to sp to store in db..
AS
--SET NOCOUNT ON
IF @Value = 0 BEGIN
INSERT INTO YourTableName (
[TableColumn1],
[TableColumn2],
[TableColumn3],
[TableColumn4],
[TableColumn5],
[TableColumn6],
[TableColumn7],
[TableColumn8],
[TableColumn9],
[TableColumn10],
[TableColumn11],
[TableColumn12],
[TableColumn13]
)
VALUES (
@Value1,
@Value2,
@Value3,
@Value4,
@Value5,
@Value6,
@Value7,
@Value8,
@Value9,
@Value10,
@Value11,
@Value12,
default
)
SELECT SCOPE_IDENTITY() As InsertedID
END
ELSE BEGIN
UPDATE YourTableName SET
[TableColumn1] = @Value1,
[TableColumn2] = @Value2,
[TableColumn3] = @Value3,
[TableColumn4] = @Value4,
[TableColumn5] = @Value5,
[TableColumn6] = @Value6,
[TableColumn7] = @Value7,
[TableColumn8] = @Value8,
[TableColumn9] = @Value9,
[TableColumn10] = @Value10,
[TableColumn11] = @Value11,
[TableColumn12] = @Value12,
[TableColumn13] = @Value13
WHERE [TableColumn] = @Value
END
GO`
The most important thing to know about async
and await
is that await
doesn't wait for the associated call to complete. What await
does is to return the result of the operation immediately and synchronously if the operation has already completed or, if it hasn't, to schedule a continuation to execute the remainder of the async
method and then to return control to the caller. When the asynchronous operation completes, the scheduled completion will then execute.
The answer to the specific question in your question's title is to block on an async
method's return value (which should be of type Task
or Task<T>
) by calling an appropriate Wait
method:
public static async Task<Foo> GetFooAsync()
{
// Start asynchronous operation(s) and return associated task.
...
}
public static Foo CallGetFooAsyncAndWaitOnResult()
{
var task = GetFooAsync();
task.Wait(); // Blocks current thread until GetFooAsync task completes
// For pedagogical use only: in general, don't do this!
var result = task.Result;
return result;
}
In this code snippet, CallGetFooAsyncAndWaitOnResult
is a synchronous wrapper around asynchronous method GetFooAsync
. However, this pattern is to be avoided for the most part since it will block a whole thread pool thread for the duration of the asynchronous operation. This an inefficient use of the various asynchronous mechanisms exposed by APIs that go to great efforts to provide them.
The answer at "await" doesn't wait for the completion of call has several, more detailed, explanations of these keywords.
Meanwhile, @Stephen Cleary's guidance about async void
holds. Other nice explanations for why can be found at http://www.tonicodes.net/blog/why-you-should-almost-never-write-void-asynchronous-methods/ and https://jaylee.org/archive/2012/07/08/c-sharp-async-tips-and-tricks-part-2-async-void.html
This will do the same as many of the other answers, but will make sides flush with the window, so there is no scroll bars.
<div class="container-fluid">
<div class="row">
<div class="col" style="padding: 0;">
<img src="example.jpg" class="img-responsive" alt="Example">
</div>
</div>
</div>
Waqas Raja's answer with some LINQ lambda fun:
List<int> listValues = new List<int>();
Request.Form.AllKeys
.Where(n => n.StartsWith("List"))
.ToList()
.ForEach(x => listValues.Add(int.Parse(Request.Form[x])));
I have faced the same issue and the solution for me is change Solution Configuration
from Release
to Debug
. Hope it helps
This code is used for disable the right click events and keyboard short cuts.
Just try with this code
document.onkeydown = function(e) {_x000D_
if(e.keyCode == 123) {_x000D_
return false;_x000D_
}_x000D_
if(e.ctrlKey && e.shiftKey && e.keyCode == 'I'.charCodeAt(0)){_x000D_
return false;_x000D_
}_x000D_
if(e.ctrlKey && e.shiftKey && e.keyCode == 'J'.charCodeAt(0)){_x000D_
return false;_x000D_
}_x000D_
if(e.ctrlKey && e.keyCode == 'U'.charCodeAt(0)){_x000D_
return false;_x000D_
}_x000D_
_x000D_
if(e.ctrlKey && e.shiftKey && e.keyCode == 'C'.charCodeAt(0)){_x000D_
return false;_x000D_
} _x000D_
}
_x000D_
Try %*s
and %-*s
and prefix each string with the column width:
>>> print "Location: %-*s Revision: %s" % (20,"10-10-10-10","1")
Location: 10-10-10-10 Revision: 1
>>> print "District: %-*s Date: %s" % (20,"Tower","May 16, 2012")
District: Tower Date: May 16, 2012
The data.table
package has its IDate
class and functionalities similar to lubridate
or the zoo
package. You could do:
dt = data.table(
Name = c('Joe', 'Amy', 'John'),
JoiningDate = c('12/31/09', '10/28/09', '05/06/10'),
AmtPaid = c(1000, 100, 200)
)
require(data.table)
dt[ , JoiningDate := as.IDate(JoiningDate, '%m/%d/%y') ]
Python docs has an answer that covers +/-, and exponent notation
scanf() Token Regular Expression
%e, %E, %f, %g [-+]?(\d+(\.\d*)?|\.\d+)([eE][-+]?\d+)?
%i [-+]?(0[xX][\dA-Fa-f]+|0[0-7]*|\d+)
This regular expression does not support international formats where a comma is used as the separator character between the whole and fractional part (3,14159).
In that case, replace all \.
with [.,]
in the above float regex.
Regular Expression
International float [-+]?(\d+([.,]\d*)?|[.,]\d+)([eE][-+]?\d+)?
When you first set up this package, I am guessing that either a one or two digit number was the first value in the ShipTo column. Your package reading from the Excel picked a numeric type for that input field and the word "ALL" fails the package since the input spec for that field is numeric. There are several ways to fix this beforehand, but to fix it after the fact, the easiest way is to right click the Excel Source and choose Show Advanced Editor... From there, choose the tab that says Input and Output Properties. In the topmost part of the inputs and outputs section of that dialog box, find the column ShipTo. You will have to drill down to find it. Set the DataType to "string [DT_STR]" and the length to 20.
Click OK then attempt to run your package again.
This worked for me.
$('.nav-pills > li > a').click( function() {
$('.nav-pills > li.active').removeClass('active');
$(this).parent().addClass('active');
} );
Conda needs to know where to find you SSL certificate store.
conda config --set ssl_verify <pathToYourFile>.crt
No need to disable SSL verification.
This command add a line to your $HOME/.condarc
file or %USERPROFILE%\.condarc
file on Windows that looks like:
ssl_verify: <pathToYourFile>.crt
If you leave your organization's network, you can just comment out that line in .condarc
with a #
and uncomment when you return.
If it still doesn't work, make sure that you are using the latest version of curl
, checking both the conda-forge
and anaconda
channels.
For those of you who visit this page looking for further clarification on this error, in my case the activity making the call to the fragment needed to have 2 implements in this case, like this:
public class MyActivity extends Activity implements
MyFragment.OnFragmentInteractionListener,
NavigationDrawerFragment.NaviationDrawerCallbacks {
...// rest of the code
}
You have not placed the script tags for angular js
you can do so by using cdn or downloading the angularjs for your project and then referencing it
after this you have to add your own java script in your case main.js
that should do
I had the same error code when executing the following statement:
sheet.QueryTables.Add("TEXT" & Path.GetFullPath(fileName), "1:1", Type.Missing)
The reason was the missing semicolon (;) after "TEXT".
Here is the correct one:
sheet.QueryTables.Add("TEXT;" & Path.GetFullPath(fileName), "1:1", Type.Missing)
Yes, you should always call base class __init__
explicitly as a good coding practice. Forgetting to do this can cause subtle issues or run time errors. This is true even if __init__
doesn't take any parameters. This is unlike other languages where compiler would implicitly call base class constructor for you. Python doesn't do that!
The main reason for always calling base class _init__
is that base class may typically create member variable and initialize them to defaults. So if you don't call base class init, none of that code would be executed and you would end up with base class that has no member variables.
Example:
class Base:
def __init__(self):
print('base init')
class Derived1(Base):
def __init__(self):
print('derived1 init')
class Derived2(Base):
def __init__(self):
super(Derived2, self).__init__()
print('derived2 init')
print('Creating Derived1...')
d1 = Derived1()
print('Creating Derived2...')
d2 = Derived2()
This prints..
Creating Derived1...
derived1 init
Creating Derived2...
base init
derived2 init
Based on the number of rules you want to ignore (All, or Some), and the scope of disabling it (Line(s), File(s), Everywhere), we have 2 × 3 = 6 cases.
Case 1.1: You want to disable "All Rules" for "One or more Lines"
Two ways you can do this:
/* eslint-disable-line */
at the end of the line(s),/* eslint-disable-next-line */
right before the line.Case 1.2: You want to disable "All Rules" for "One File"
/* eslint-disable */
at the top of the file.Case 1.3: You want to disable "All rules" for "Some Files"
There are 3 ways you can do this:
/* eslint-disable */
on top of the files, one by one..eslintignore
. This works well especially if you have a path that you want to be ignored. (e.g. apidoc/**
).eslintignore
file, you can add
"eslintIgnore": ["file1.js", "file2.js"]
in package.json
as
instructed here.Case 2.1: You want to disable "Some Rules" for "One or more Lines"
Two ways you can do this:
You can put /* eslint-disable-line quotes */
(replace quotes
with your rules) at the end of the line(s),
or /* eslint-disable-next-line no-alert, quotes, semi */
before the line.
Case 2.2: You want to disable "Some Rules" for "One File"
/* eslint-disable no-use-before-define */
comment at the top of the file.More examples here.
Case 2.3: You want to disable "Some Rules" for "Some files"
"excludedFiles"
object of "overrides"
section of your .eslintrc
as instructed here.There is a javascript library DNS-JS.com that does just this.
DNS.Query("dns-js.com",
DNS.QueryType.A,
function(data) {
console.log(data);
});
Add style="width:100%; height:100%;"
to the div see what that does
not to the #map_canvas
but the main div
example
<body>
<div style="height:100%; width:100%;">
<div id="map-canvas"></div>
</div>
</body>
There are some other answers on here the explain why this is necessary
In xml
file, put imeOptions="actionSearch"
and inputType="text"
, maxLines="1"
:
<EditText
android:id="@+id/search_box"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="@string/search"
android:imeOptions="actionSearch"
android:inputType="text"
android:maxLines="1" />
I usually use SHA1 and salt with the user ID (or some other user-specific piece of information), and sometimes I additionally use a constant salt (so I have 2 parts to the salt).
SHA1 is now also considered somewhat compromised, but to a far lesser degree than MD5. By using a salt (any salt), you're preventing the use of a generic rainbow table to attack your hashes (some people have even had success using Google as a sort of rainbow table by searching for the hash). An attacker could conceivably generate a rainbow table using your salt, so that's why you should include a user-specific salt. That way, they will have to generate a rainbow table for each and every record in your system, not just one for your entire system! With that type of salting, even MD5 is decently secure.
You can use WMIC or SCHTASKS (which means no third party software is needed):
1) SCHTASKS:
SCHTASKS /s remote_machine /U username /P password /create /tn "On demand demo" /tr "C:\some.bat" /sc ONCE /sd 01/01/1910 /st 00:00
SCHTASKS /s remote_machine /U username /P password /run /TN "On demand demo"
2) WMIC (wmic will return the pid of the started process)
WMIC /NODE:"remote_machine" /user user /password password process call create "c:\some.bat","c:\exec_dir"
Another option is to let tkinter execute on a separate thread. One way of doing it is like this:
import Tkinter
import threading
class MyTkApp(threading.Thread):
def __init__(self):
self.root=Tkinter.Tk()
self.s = Tkinter.StringVar()
self.s.set('Foo')
l = Tkinter.Label(self.root,textvariable=self.s)
l.pack()
threading.Thread.__init__(self)
def run(self):
self.root.mainloop()
app = MyTkApp()
app.start()
# Now the app should be running and the value shown on the label
# can be changed by changing the member variable s.
# Like this:
# app.s.set('Bar')
Be careful though, multithreaded programming is hard and it is really easy to shoot your self in the foot. For example you have to be careful when you change member variables of the sample class above so you don't interrupt with the event loop of Tkinter.
adding setter and getter will also solve the issue as it fixed for me. For Ex:
public class TestA {
String SomeString = "asd";
public String getSomeString () { return SomeString ; }
public void setSomeString (String SS ) { SomeString = SS ; }
}
Visual C# Express 2005 ISO File does not require registration
if you are using ps, you can check the manual
man ps
there is a list of keywords allowing you to build what you need. for example to show, userid / processid / percent cpu / percent memory / work queue / command :
ps -e -o "uid pid pcpu pmem wq comm"
-e is similar to -A (all inclusive; your processes and others), and -o is to force a format.
if you are looking for a specific uid, you can chain it using awk or grep such as :
ps -e -o "uid pid pcpu pmem wq comm" | grep 501
this should (almost) show only for userid 501. try it.
the solution here worked for me : https://community.hortonworks.com/articles/4427/fix-under-replicated-blocks-in-hdfs-manually.html
su - <$hdfs_user>
bash-4.1$ hdfs fsck / | grep 'Under replicated' | awk -F':' '{print $1}' >> /tmp/under_replicated_files
-bash-4.1$ for hdfsfile in `cat /tmp/under_replicated_files`; do echo "Fixing $hdfsfile :" ; hadoop fs -setrep 3 $hdfsfile; done
It's a "precompiled header file" -- any headers you include in stdafx.h are pre-processed to save time during subsequent compilations. You can read more about it here on MSDN.
If you're building a cross-platform application, check "Empty project" when creating your project and Visual Studio won't put any files at all in your project.
If you don't have to come back on the page with keeping form's value, you can do that :
<form method="post" th:action="@{''}" th:object="${form}">
<input class="form-control"
type="text"
th:field="${client.name}"/>
It's some kind of magic :
If you matter keeping you form's input values, like a back on the page with an user input mistake, then you will have to do that :
<form method="post" th:action="@{''}" th:object="${form}">
<input class="form-control"
type="text"
th:name="name"
th:value="${form.name != null} ? ${form.name} : ${client.name}"/>
That means :
Without having to map your client bean to your form bean. And it works because once you submitted the form, the value arn't null but "" (empty)
int.from_bytes( bytes, byteorder, *, signed=False )
doesn't work with me I used function from this website, it works well
https://coderwall.com/p/x6xtxq/convert-bytes-to-int-or-int-to-bytes-in-python
def bytes_to_int(bytes):
result = 0
for b in bytes:
result = result * 256 + int(b)
return result
def int_to_bytes(value, length):
result = []
for i in range(0, length):
result.append(value >> (i * 8) & 0xff)
result.reverse()
return result
data.reshape((50,1104,-1))
works for me
^wp.*\.php$
Should do the trick.
The .*
means "any character, repeated 0 or more times". The next .
is escaped because it's a special character, and you want a literal period (".php"). Don't forget that if you're typing this in as a literal string in something like C#, Java, etc., you need to escape the backslash because it's a special character in many literal strings.
Ok, I don't normally answer my own questions but after a bit of tinkering, I have figured out definitively how Oracle stores the result of a DATE subtraction.
When you subtract 2 dates, the value is not a NUMBER datatype (as the Oracle 11.2 SQL Reference manual would have you believe). The internal datatype number of a DATE subtraction is 14, which is a non-documented internal datatype (NUMBER is internal datatype number 2). However, it is actually stored as 2 separate two's complement signed numbers, with the first 4 bytes used to represent the number of days and the last 4 bytes used to represent the number of seconds.
An example of a DATE subtraction resulting in a positive integer difference:
select date '2009-08-07' - date '2008-08-08' from dual;
Results in:
DATE'2009-08-07'-DATE'2008-08-08'
---------------------------------
364
select dump(date '2009-08-07' - date '2008-08-08') from dual;
DUMP(DATE'2009-08-07'-DATE'2008
-------------------------------
Typ=14 Len=8: 108,1,0,0,0,0,0,0
Recall that the result is represented as a 2 seperate two's complement signed 4 byte numbers. Since there are no decimals in this case (364 days and 0 hours exactly), the last 4 bytes are all 0s and can be ignored. For the first 4 bytes, because my CPU has a little-endian architecture, the bytes are reversed and should be read as 1,108 or 0x16c, which is decimal 364.
An example of a DATE subtraction resulting in a negative integer difference:
select date '1000-08-07' - date '2008-08-08' from dual;
Results in:
DATE'1000-08-07'-DATE'2008-08-08'
---------------------------------
-368160
select dump(date '1000-08-07' - date '2008-08-08') from dual;
DUMP(DATE'1000-08-07'-DATE'2008-08-0
------------------------------------
Typ=14 Len=8: 224,97,250,255,0,0,0,0
Again, since I am using a little-endian machine, the bytes are reversed and should be read as 255,250,97,224 which corresponds to 11111111 11111010 01100001 11011111. Now since this is in two's complement signed binary numeral encoding, we know that the number is negative because the leftmost binary digit is a 1. To convert this into a decimal number we would have to reverse the 2's complement (subtract 1 then do the one's complement) resulting in: 00000000 00000101 10011110 00100000 which equals -368160 as suspected.
An example of a DATE subtraction resulting in a decimal difference:
select to_date('08/AUG/2004 14:00:00', 'DD/MON/YYYY HH24:MI:SS'
- to_date('08/AUG/2004 8:00:00', 'DD/MON/YYYY HH24:MI:SS') from dual;
TO_DATE('08/AUG/200414:00:00','DD/MON/YYYYHH24:MI:SS')-TO_DATE('08/AUG/20048:00:
--------------------------------------------------------------------------------
.25
The difference between those 2 dates is 0.25 days or 6 hours.
select dump(to_date('08/AUG/2004 14:00:00', 'DD/MON/YYYY HH24:MI:SS')
- to_date('08/AUG/2004 8:00:00', 'DD/MON/YYYY HH24:MI:SS')) from dual;
DUMP(TO_DATE('08/AUG/200414:00:
-------------------------------
Typ=14 Len=8: 0,0,0,0,96,84,0,0
Now this time, since the difference is 0 days and 6 hours, it is expected that the first 4 bytes are 0. For the last 4 bytes, we can reverse them (because CPU is little-endian) and get 84,96 = 01010100 01100000 base 2 = 21600 in decimal. Converting 21600 seconds to hours gives you 6 hours which is the difference which we expected.
Hope this helps anyone who was wondering how a DATE subtraction is actually stored.
You get the syntax error because the date math does not return a NUMBER, but it returns an INTERVAL:
SQL> SELECT DUMP(SYSDATE - start_date) from test;
DUMP(SYSDATE-START_DATE)
--------------------------------------
Typ=14 Len=8: 188,10,0,0,223,65,1,0
You need to convert the number in your example into an INTERVAL first using the NUMTODSINTERVAL Function
For example:
SQL> SELECT (SYSDATE - start_date) DAY(5) TO SECOND from test;
(SYSDATE-START_DATE)DAY(5)TOSECOND
----------------------------------
+02748 22:50:04.000000
SQL> SELECT (SYSDATE - start_date) from test;
(SYSDATE-START_DATE)
--------------------
2748.9515
SQL> select NUMTODSINTERVAL(2748.9515, 'day') from dual;
NUMTODSINTERVAL(2748.9515,'DAY')
--------------------------------
+000002748 22:50:09.600000000
SQL>
Based on the reverse cast with the NUMTODSINTERVAL() function, it appears some rounding is lost in translation.
Found that using docker-compose config
reported what the problem was.
In my case, an override compose file with an entry that was overriding nothing.