The issue is that you are not able to get a connection to MYSQL database and hence it is throwing an error saying that cannot build a session factory.
Please see the error below:
Caused by: java.sql.SQLException: Access denied for user ''@'localhost' (using password: NO)
which points to username
not getting populated
.
Please recheck system properties
dataSource.setUsername(System.getProperty("root"));
some packages seems to be missing as well pointing to a dependency issue:
package org.gjt.mm.mysql does not exist
Please run a mvn dependency:tree
command to check for dependencies
Don't use jQuery to manipulate the DOM when you're using React. React components should render a representation of what they should look like given a certain state; what DOM that translates to is taken care of by React itself.
What you want to do is store the "state which determines what gets rendered" higher up the chain, and pass it down. If you are rendering n
children, that state should be "owned" by whatever contains your component. eg:
class AppComponent extends React.Component {
state = {
numChildren: 0
}
render () {
const children = [];
for (var i = 0; i < this.state.numChildren; i += 1) {
children.push(<ChildComponent key={i} number={i} />);
};
return (
<ParentComponent addChild={this.onAddChild}>
{children}
</ParentComponent>
);
}
onAddChild = () => {
this.setState({
numChildren: this.state.numChildren + 1
});
}
}
const ParentComponent = props => (
<div className="card calculator">
<p><a href="#" onClick={props.addChild}>Add Another Child Component</a></p>
<div id="children-pane">
{props.children}
</div>
</div>
);
const ChildComponent = props => <div>{"I am child " + props.number}</div>;
setState(updater[, callback])
is an async function:
https://facebook.github.io/react/docs/react-component.html#setstate
You can execute a function after setState is finishing using the second param callback
like:
this.setState({
someState: obj
}, () => {
this.afterSetStateFinished();
});
The same can be done with hooks in React functional component:
https://github.com/the-road-to-learn-react/use-state-with-callback#usage
Look at useStateWithCallbackLazy:
import { useStateWithCallbackLazy } from 'use-state-with-callback';
const [count, setCount] = useStateWithCallbackLazy(0);
setCount(count + 1, () => {
afterSetCountFinished();
});
Missing the 'implements' keyword in the impl classes might also be the issue
This issue is happening because you have installed jre1.8.0_101-1.8.0_101-fcs.i58.rpm as well jdk-1.7.0_80-fcs.x86_64.rpm. so just uninstall your jre rpm & restart your application. It should work out.
Weird error, you can try methods given by james goooseling and also I have done it by following ways:
Remove all jars or libraries from build path and lib folders and add them again in lib folder or build path as you wish.
Check if you have servlet annotation @WebServlet
for given servlet and if it has mapping in web.xml as well .. this is most common error due to which tomcat gets confused , that what url pattern must he use.
I ran in to this recently, and as it turned out, I've imported the wrong annotation in my service class. Netbeans has an option to hide import statements, that's why I did not see it for some time.
I've used @org.jvnet.hk2.annotations.Service
instead of @org.springframework.stereotype.Service
.
In my case I had the same issue on running from eclipse. Just did the following to resolve it: Right Click the Project --> Mavan --> Update Project.
And it worked!
This error happens because of your Jre version of Eclipse and Tomcat are mismatched ..either change eclipse one to tomcat one or ViceVersa..
Both should be same ..Java version
mismatched ..Check it
Lots of the answers here don't honor changes of the table or are way too complicated. Using a subclass of UITableView
that will properly set intrinsicContentSize
is a far easier solution when using autolayout. No height constraints etc. needed.
class UIDynamicTableView: UITableView
{
override var intrinsicContentSize: CGSize {
self.layoutIfNeeded()
return CGSize(width: UIViewNoIntrinsicMetric, height: self.contentSize.height)
}
override func reloadData() {
super.reloadData()
self.invalidateIntrinsicContentSize()
}
}
Set the class of your TableView to UIDynamicTableView
in the interface builder and watch the magic as this TableView will change it's size after a call to reloadData()
.
Unlike some browsers, Java follows the HTTPS specification strictly when it comes to the server identity verification (RFC 2818, Section 3.1) and IP addresses.
When using a host name, it's possible to fall back to the Common Name in the Subject DN of the server certificate, instead of using the Subject Alternative Name.
When using an IP address, there must be a Subject Alternative Name entry (of type IP address, not DNS name) in the certificate.
You'll find more details about the specification and how to generate such a certificate in this answer.
Most of the cases issue is due to problem with hostname . Please check the hostname ,some times database team will maintain many hostname for connecting same database . Please check with database team regarding this connection issue.
Andrea solution is absolutely right, I will just write another implementation based on the same idea. If you took a look at the THREE.ImageUtils.loadTexture() source you will find it uses the javascript Image object. The $(window).load event is fired after all Images are loaded ! so at that event we can render our scene with the textures already loaded...
CoffeeScript
$(document).ready ->
material = new THREE.MeshLambertMaterial(map: THREE.ImageUtils.loadTexture("crate.gif"))
sphere = new THREE.Mesh(new THREE.SphereGeometry(radius, segments, rings), material)
$(window).load ->
renderer.render scene, camera
JavaScript
$(document).ready(function() {
material = new THREE.MeshLambertMaterial({ map: THREE.ImageUtils.loadTexture("crate.gif") });
sphere = new THREE.Mesh(new THREE.SphereGeometry(radius, segments, rings), material);
$(window).load(function() {
renderer.render(scene, camera);
});
});
Thanks...
you need to add jar file in your build path..
commons-dbcp-1.1-RC2.jar
or any version of that..!!!!
ADDED : also make sure you have commons-pool-1.1.jar too in your build path.
ADDED: sorry saw complete list of jar late... may be version clashes might be there.. better check out..!!! just an assumption.
make sure your properties file exist in classpath directory but not in sub folder of your classpath directory. if it is exist in sub folder then write as below classpath:subfolder/idm.properties
There is a lot of incompatibility between different versions of cglib and lots of poor advice that can be googled on this subject (use ancient versions of cglib-nodeb, etc). After wrestling with this nonsense for 3 days with an ancient version of Spring (2.5.6)I have discovered:
You can improve that code
private void Form1_Load(object sender, EventArgs e)
{
/*
D:\root\Project1\A\A.pdf
D:\root\Project1\B\t.pdf
D:\root\Project2\c.pdf
*/
List<string> n = new List<string>();
List<string> kn = new List<string>();
n = Directory.GetFiles(@"D:\root\", "*.*", SearchOption.AllDirectories).ToList();
kn = Directory.GetDirectories(@"D:\root\", "*.*", SearchOption.AllDirectories).ToList();
foreach (var item in kn)
{
treeView1.Nodes.Add(item.ToString());
}
for (int i = 0; i < treeView1.Nodes.Count; i++)
{
n = Directory.GetFiles(treeView1.Nodes[i].Text, "*.*", SearchOption.AllDirectories).ToList();
for (int zik = 0; zik < n.Count; zik++)
{
treeView1.Nodes[i].Nodes.Add(n[zik].ToString());
}
}
}
You might be better off using a ListView with a CursorAdapter (or SimpleCursorAdapter).
These are built to show rows from a sqlite database and allow refreshing with minimal programming on your part.
Edit - here is a tutorial involving SimpleCursorAdapter and ListView including sample code.
You can also use awk:
awk 'END {print NR,"lines"}' filename
Or
awk 'END {print NR}' filename
I tried to put the font size in the styles.xml but when i went to use it it was only allowing resources from the dimen folder so put it in there instead, dont know it this is right
<Button
android:layout_weight="1"
android:id="@+id/three_btn"
android:layout_height="match_parent"
android:layout_width="0dp"
android:onClick="onButtonClick"
android:textColor="#EEEEEE"
android:textStyle="bold"
android:textSize="@dimen/buttonFontSize"
android:text="3"/>
Use the function Contains
from the strings package.
import (
"strings"
)
strings.Contains("something", "some") // true
The 500 code would normally indicate an error on the server, not anything with your code. Some thoughts
Here is a one line code that cleans up the PATH
Uses /bin/awk
so it works even when PATH is broken
export PATH="$(echo "$PATH" |/bin/awk 'BEGIN{RS=":";}
{sub(sprintf("%c$",10),"");if(A[$0]){}else{A[$0]=1;
printf(((NR==1)?"":":")$0)}}')";
To do it without any import:
>>> round_up = lambda num: int(num + 1) if int(num) != num else int(num)
>>> round_up(2.0)
2
>>> round_up(2.1)
3
<TextView
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="#c0c0c0"
android:id="@+id/your_id"
android:layout_marginTop="160dp" />
It works with me only if I set the footer/header of the tableview to nil first:
self.footer = self.searchTableView.tableFooterView;
CGRect frame = self.footer.frame;
frame.size.height = 200;
self.footer.frame = frame;
self.searchTableView.tableFooterView = nil;
self.searchTableView.tableFooterView = self.footer;
Make sure that self.footer is a strong reference to prevent the footer view from being deallocated
Use clipboard-cli. It works with macOS, Windows, Linux, OpenBSD, FreeBSD, and Android without any real issues.
Install it with:
npm install -g clipboard-cli
Then you can do:
echo foo | clipboard
If you want, you can alias to cb
by putting the following in your .bashrc
, .bash_profile
, or .zshrc
:
alias cb=clipboard
Your code is fine. There's no problem with returning Strings
in this manner.
In Java, a String
is a reference to an immutable object. This, coupled with garbage collection, takes care of much of the potential complexity: you can simply pass a String
around without worrying that it would disapper on you, or that someone somewhere would modify it.
If you don't mind me making a couple of stylistic suggestions, I'd modify the code like so:
public String time_to_string(long t) // time in milliseconds
{
if (t < 0)
{
return "-";
}
else
{
int secs = (int)(t/1000);
int mins = secs/60;
secs = secs - (mins * 60);
return String.format("%d:%02d", mins, secs);
}
}
As you can see, I've pushed the variable declarations as far down as I could (this is the preferred style in C++ and Java). I've also eliminated ans
and have replaced the mix of string concatenation and String.format()
with a single call to String.format()
.
Here's what I ended up with. This works for me if I import my script in the interpreter, and also if I execute it as a script:
import os
import sys
# Returns the directory the current script (or interpreter) is running in
def get_script_directory():
path = os.path.realpath(sys.argv[0])
if os.path.isdir(path):
return path
else:
return os.path.dirname(path)
Use onunload.
For jQuery, I think this works like so:
$(window).unload(function() {
alert("Unloading");
return falseIfYouWantToButBeCareful();
});
If you really need to override css that has !important rules in it, for instance, in a case I ran into recently, overriding a wordpress theme required !important scss rules to break the theme, but since I was transpiling my code with webpack and (I assume this is why --)my css came along in the chain after the transpiled javascript, you can add a separate class rule in your stylesheet that overrides the first !important rule in the cascade, and toggle the heavier-weighted class rather than adjusting css dynamically. Just a thought.
What kind of field is this? The IN operator cannot be used with a single field, but is meant to be used in subqueries or with predefined lists:
-- subquery
SELECT a FROM x WHERE x.b NOT IN (SELECT b FROM y);
-- predefined list
SELECT a FROM x WHERE x.b NOT IN (1, 2, 3, 6);
If you are searching a string, go for the LIKE operator (but this will be slow):
-- Finds all rows where a does not contain "text"
SELECT * FROM x WHERE x.a NOT LIKE '%text%';
If you restrict it so that the string you are searching for has to start with the given string, it can use indices (if there is an index on that field) and be reasonably fast:
-- Finds all rows where a does not start with "text"
SELECT * FROM x WHERE x.a NOT LIKE 'text%';
I ran into this problem too, a lot of people seem to recommend force reloading your page, which won't fix the issue in cases such as if you're running it on a server. I believe the optimal solution in this scenario is to timestamp your css.
<link rel="stylesheet" href="{% static 'home/radioStyles.css' %}?{% now 'U' %}" type="text/css"/>
Where adding ?{% now 'U' %} to the end of your css file would fix this issue.
<link rel="stylesheet" type="text/css" href="style.css?Wednesday 2nd February 2020 12PM" />
Where ?Wednesday 2nd February 2020 12PM
(current date) seems to fix the issue, I also noticed just putting the time fixes it too.
With modern browsers, this is easy without jQuery:
document.getElementById('yourParentDiv').querySelectorAll('[id^="q17_"]');
The querySelectorAll takes a selector (as per CSS selectors) and uses it to search children of the 'yourParentDiv' element recursively. The selector uses ^=
which means "starts with".
Note that all browsers released since June 2009 support this.
I developed a maven plugin that can both, be run from CLI as a plugin goal, or import as dependency and programmatically use the parser, @see Main#main()
to get the idea on how.
It renders PlantUML src code of desired packages recursively that you can edit manually if needed (hopefully you won't). Then, by pasting the code in the plantUML page, or by downloading plant's jar you can render the UML diagram as a png image.
Check it out here https://github.com/juanmf/Java2PlantUML
Any contribution is more than welcome. It has a set of filters that customize output but I didn't expose these yet in the plugin CLI params.
It's important to note that it's not limited to your *.java files, it can render UML diagrams src from you maven dependencies as well. This is very handy to understand libraries you depend on. It actually inspects compiled classes with reflection so no source needed
Be the 1st to star it at GitHub :P
You can change the passwd file directly for the particular user or use the below command
chsh -s /usr/local/bin/bash username
Then log out and log in
We can get the element screenshot by cropping entire page screenshot as below:
driver.get("http://www.google.com");
WebElement ele = driver.findElement(By.id("hplogo"));
// Get entire page screenshot
File screenshot = ((TakesScreenshot)driver).getScreenshotAs(OutputType.FILE);
BufferedImage fullImg = ImageIO.read(screenshot);
// Get the location of element on the page
Point point = ele.getLocation();
// Get width and height of the element
int eleWidth = ele.getSize().getWidth();
int eleHeight = ele.getSize().getHeight();
// Crop the entire page screenshot to get only element screenshot
BufferedImage eleScreenshot= fullImg.getSubimage(point.getX(), point.getY(),
eleWidth, eleHeight);
ImageIO.write(eleScreenshot, "png", screenshot);
// Copy the element screenshot to disk
File screenshotLocation = new File("C:\\images\\GoogleLogo_screenshot.png");
FileUtils.copyFile(screenshot, screenshotLocation);
The solution for this problem is actually quite simple and there are two ways to go about it. If you have control over the Content.html then simply change the div#ScrolledArea
width CSS to:
width: 1px;
min-width: 100%;
*width: 100%;
Basically the idea here is simple, you set the width
to something that is smaller than the viewport (iframe width in this case) and then overwrite it with min-width: 100%
to allow for actual width: 100%
which iOS Safari by default overwrites. The *width: 100%;
is there so the code would remain IE6 compatible, but if you do not care for IE6 you can omit it. Demo
As you can see now, the div#ScrolledArea
width is actually 100% and the overflow: scroll;
can do it's thing and hide the overflowing content. If you have access to the iframe content, then this is preferable.
However if you do not have access to the iframe content (for what ever reason) then you can actually use the same technique on the iframe itself. Simply use the same CSS on the iframe:
iframe {
width: 1px;
min-width: 100%;
*width: 100%;
}
However, there is one limitation with this, you need to turn off the scrollbars with scrolling="no"
on the iframe for this to work:
<iframe height="950" width="100%" scrolling="no" src="Content.html"></iframe>
If the scrollbars are allowed, then this wont work on the iframe anymore. That said, if you modify the Content.html instead then you can retain the scrolling in the iframe. Demo
If you use Three20
, then use the autoresizesForKeyboard
property. Just set in the your view controller's -initWithNibName:bundle
method
self.autoresizesForKeyboard = YES
This takes care of:
Done and done.
Hi You can use a simple query,
select emp_cd, val1, val2, val3,
(val1+val2+val3) as total
from emp;
In case you need to insert a new row,
insert into emp select emp_cd, val1, val2, val3,
(val1+val2+val3) as total
from emp;
In order to update,
update emp set total = val1+val2+val3;
This will update for all comumns
To use Python EasyInstall (which is what I think you're wanting to use), is super easy!
sudo easy_install pip
so then with pip to install Pyserial you would do:
pip install pyserial
WebDriver driver = new FirefoxDriver();
WebElement identifier = driver.findElement(By.id("periodId"));
Select select = new Select(identifier);
select.selectByVisibleText("Last 52 Weeks");
First off, your code is a bit off. aes()
is an argument in ggplot()
, you don't use ggplot(...)
+ aes(...) + layers
Second, from the help file ?geom_bar
:
By default, geom_bar uses stat="count" which makes the height of the bar proportion to the number of cases in each group (or if the weight aethetic is supplied, the sum of the weights). If you want the heights of the bars to represent values in the data, use stat="identity" and map a variable to the y aesthetic.
You want the second case, where the height of the bar is equal to the conversion_rate
So what you want is...
data_country <- data.frame(country = c("China", "Germany", "UK", "US"),
conversion_rate = c(0.001331558,0.062428188, 0.052612025, 0.037800687))
ggplot(data_country, aes(x=country,y = conversion_rate)) +geom_bar(stat = "identity")
Result:
It’s just HTML with Server Side Includes.
I used another solution using MarkupExtension.
I made class which provides items source:
public class EnumToItemsSource : MarkupExtension
{
private readonly Type _type;
public EnumToItemsSource(Type type)
{
_type = type;
}
public override object ProvideValue(IServiceProvider serviceProvider)
{
return Enum.GetValues(_type)
.Cast<object>()
.Select(e => new { Value = (int)e, DisplayName = e.ToString() });
}
}
That's almost all... Now use it in XAML:
<ComboBox DisplayMemberPath="DisplayName"
ItemsSource="{persons:EnumToItemsSource {x:Type enums:States}}"
SelectedValue="{Binding Path=WhereEverYouWant}"
SelectedValuePath="Value" />
Change 'enums:States' to your enum
I'm assuming mysql_fetch_array() perfroms a loop, so I'm interested in if using a while() in conjunction with it, if it saves a nested loop.
No. mysql_fetch_array
just returns the next row of the result and advances the internal pointer. It doesn't loop. (Internally it may or may not use some loop somewhere, but that's irrelevant.)
while ($row = mysql_fetch_array($result)) {
...
}
This does the following:
mysql_fetch_array
retrieves and returns the next row$row
true
, the contents of the loop are executed$row = mysql_fetch_array($result); foreach($row as $r) { ... }
This does the following:
mysql_fetch_array
retrieves and returns the next row$row
foreach
loops over the contents of the array and executes the contents of the loop as many times as there are items in the arrayIn both cases mysql_fetch_array
does exactly the same thing. You have only as many loops as you write. Both constructs do not do the same thing though. The second will only act on one row of the result, while the first will loop over all rows.
I think it could be used for "retroactively forking"
If you have a Git repo, and have now decided that it should have forked another repo. Retroactively you would like it to become a fork, without disrupting the team that uses the repo by needing them to target a new repo.
But I could be wrong.
Spring is three things.
The problem is that Spring DI is really well thought out, the wrappers around other things are really well thought out in that the other things thought everything out and Spring just nicely wraps it. The Spring implementations of MVC and REST and all the other stuff is not as well done (YMMV, IMHO) but there are exceptions (Spring Security is da bomb). So I tend to use Spring for DI, and its cool wrappers but prefer other stuff for Web (I like Tapestry a lot), REST (Jersey is really robust), etc.
There are three basic types of join:
INNER
join compares two tables and only returns results where a match exists. Records from the 1st table are duplicated when they match multiple results in the 2nd. INNER joins tend to make result sets smaller, but because records can be duplicated this isn't guaranteed.CROSS
join compares two tables and return every possible combination of rows from both tables. You can get a lot of results from this kind of join that might not even be meaningful, so use with caution.OUTER
join compares two tables and returns data when a match is available or NULL values otherwise. Like with INNER join, this will duplicate rows in the one table when it matches multiple records in the other table. OUTER joins tend to make result sets larger, because they won't by themselves remove any records from the set. You must also qualify an OUTER join to determine when and where to add the NULL values:
LEFT
means keep all records from the 1st table no matter what and insert NULL values when the 2nd table doesn't match. RIGHT
means the opposite: keep all records from the 2nd table no matter what and insert NULL values whent he 1st table doesn't match. FULL
means keep all records from both tables, and insert a NULL value in either table if there is no match.Often you see will the OUTER
keyword omitted from the syntax. Instead it will just be "LEFT JOIN", "RIGHT JOIN", or "FULL JOIN". This is done because INNER and CROSS joins have no meaning with respect to LEFT, RIGHT, or FULL, and so these are sufficient by themselves to unambiguously indicate an OUTER join.
Here is an example of when you might want to use each type:
INNER
: You want to return all records from the "Invoice" table, along with their corresponding "InvoiceLines". This assumes that every valid Invoice will have at least one line.OUTER
: You want to return all "InvoiceLines" records for a particular Invoice, along with their corresponding "InventoryItem" records. This is a business that also sells service, such that not all InvoiceLines will have an IventoryItem.CROSS
: You have a digits table with 10 rows, each holding values '0' through '9'. You want to create a date range table to join against, so that you end up with one record for each day within the range. By CROSS-joining this table with itself repeatedly you can create as many consecutive integers as you need (given you start at 10 to 1st power, each join adds 1 to the exponent). Then use the DATEADD() function to add those values to your base date for the range.What about WITH TIES?
SELECT TOP 1 WITH TIES tbl1.* FROM
(SELECT CASE WHEN S.Id IS NOT NULL AND S.Status = 1
AND (S.WebUserId = @WebUserId OR
S.AllowUploads = 1)
THEN 1
ELSE 0 AS [Value]
FROM Sites S
WHERE S.Id = @SiteId) as tbl1
ORDER BY tbl1.[Value]
Assuming you have (or can easily make) a pid file for tracking the child's pid, you could then create a script that checks the modtime of the pid file and kills/respawns the process as needed. Then just put the script in crontab to run at approximately the period you need.
Let me know if you need more details. If that doesn't sound like it'd suit your needs, what about upstart?
I also had a very similar issue with a very similar error message. My issue was that the database could not be connected to. In our case, we have mirrored databases and the connection string did not specify the Failover Partner. So when the database couldn't connect, it never went to the mirror and was throwing this error. Once I specified the Failover Partner in the connection string for my datasource, it resolved the issue.
You mean altering the size of the bullet, I assume? I believe this is tied to the font-size of the li tag. Thus, you can blow up the font-size for the LI, then reduce it for an element contained inside. Kind of sucks to add the extra markup - but something like:
li {font-size:omgHuge;}
li span {font-size:mehNormal;}
Alternately, you can specify an image file for your list bullets, that could be as big as you want:
ul{
list-style: square url("38specialPlusP.gif");
}
git rev-parse --show-toplevel
could be enough if executed within a git repo.
From git rev-parse
man page:
--show-toplevel
Show the absolute path of the top-level directory.
For older versions (before 1.7.x), the other options are listed in "Is there a way to get the git root directory in one command?":
git rev-parse --git-dir
That would give the path of the .git
directory.
The OP mentions:
git rev-parse --show-prefix
which returns the local path under the git repo root. (empty if you are at the git repo root)
Note: for simply checking if one is in a git repo, I find the following command quite expressive:
git rev-parse --is-inside-work-tree
And yes, if you need to check if you are in a .git
git-dir folder:
git rev-parse --is-inside-git-dir
In my case NDK location was the issue.
go to File->Project Structure->SDK Location
and add NDK location
I know I'm late to the party here, but I came here for opinions on my own desire to use state in actions, and then formed my own, when I realized what I think is the correct behavior.
This is where a selector makes the most sense to me. Your component that issues this request should be told wether it's time to issue it through selection.
export const SOME_ACTION = 'SOME_ACTION';
export function someAction(items) {
return (dispatch) => {
dispatch(anotherAction(items));
}
}
It might feel like leaking abstractions, but your component clearly needs to send a message and the message payload should contain pertinent state. Unfortunately your question doesn't have a concrete example because we could work through a 'better model' of selectors and actions that way.
I'll still share my short answer humbly, knowing that I'm super late to answer this question.
Here's, a simple and clean explanation that solved my issue
Also, since I was using the SSH key I used the following command:
for instance it would look like:
If you are using the HTTPS URL, refer to the answer provided by @sunny-jim above.
Do correct me if I'm wrong. Thanks.
You don't need to own a Mac nor do you need to learn Objective-C. You can develop in different environments and compile into Objective-C later on.
developing for the iphone and ipad by runing osx 10.6(snow leopard)
This article one of our developers wrote gives a pretty comprehensive walk through on installing OS X Snow Leopard on Windows using iBoot, then installing Vmware (with instructions), then getting your iPhone dev environment going... and a few extra juicy things. Super helpful for me.
Hope that helps. It uses Phonegap so you can develop on multiple smart phone platforms at once.
Just use [ngValue] instead of [value]!!
export class Organisation {
description: string;
id: string;
name: string;
}
export class ScheduleComponent implements OnInit {
selectedOrg: Organisation;
orgs: Organisation[] = [];
constructor(private organisationService: OrganisationService) {}
get selectedOrgMod() {
return this.selectedOrg;
}
set selectedOrgMod(value) {
this.selectedOrg = value;
}
}
<div class="form-group">
<label for="organisation">Organisation
<select id="organisation" class="form-control" [(ngModel)]="selectedOrgMod" required>
<option *ngFor="let org of orgs" [ngValue]="org">{{org.name}}</option>
</select>
</label>
</div>
If doing a lot of element creations, you can create your own basic createElementWithClass function.
function createElementWithClass(type, className) {
const element = document.createElement(type);
element.className = className
return element;
}
Very basic I know, but being able to call the following is less cluttering.
const myDiv = createElementWithClass('div', 'some-class')
as opposed to a lot of
const element1 = document.createElement('div');
element.className = 'a-class-name'
over and over.
I got a silly error it took me an embarrassingly long to solve.... Check out my pom.xml ...
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.outbottle</groupId>
<artifactId>PersonalDetailsMVC</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<name>PersonalDetailsMVC</name>
<properties>
<endorsed.dir>${project.build.directory}/endorsed</endorsed.dir>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<spring.version>4.0.1.RELEASE</spring.version>
<jstl.version>1.2</jstl.version>
<javax.servlet.version>3.0.1</javax.servlet.version>
</properties>
<dependencies>
<dependency>
<groupId>javax</groupId>
<artifactId>javaee-web-api</artifactId>
<version>7.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>${javax.servlet.version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>${jstl.version}</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
<compilerArguments>
<endorseddirs>${endorsed.dir}</endorseddirs>
</compilerArguments>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.3</version>
<configuration>
<failOnMissingWebXml>false</failOnMissingWebXml>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<version>2.6</version>
<executions>
<execution>
<phase>validate</phase>
<goals>
<goal>copy</goal>
</goals>
<configuration>
<outputDirectory>${endorsed.dir}</outputDirectory>
<silent>true</silent>
<artifactItems>
<artifactItem>
<groupId>javax</groupId>
<artifactId>javaee-endorsed-api</artifactId>
<version>7.0</version>
<type>jar</type>
</artifactItem>
</artifactItems>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
Problem was my package name. It MUST be "com.outbottle" (then config/controllers/model/etc) for it to work. As you can see above, I used Maven (for the first time), Spring, 1.8 JDK and nearly had a stroke debugging this issue. All running on Glassfish (Tomcat is ok too for the above pom config). That said, I'm all happy with myself now and know Maven and Spring much better for the next step of my Spring learning curve. Hoping this helps you also!
Thread.sleep can throw an InterruptedException which is a checked exception. All checked exceptions must either be caught and handled or else you must declare that your method can throw it. You need to do this whether or not the exception actually will be thrown. Not declaring a checked exception that your method can throw is a compile error.
You either need to catch it:
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
// handle the exception...
// For example consider calling Thread.currentThread().interrupt(); here.
}
Or declare that your method can throw an InterruptedException
:
public static void main(String[]args) throws InterruptedException
Related
For anyone using server-side processing and passing database values into jQuery using a hidden column, I suggest "sClass" param. You'll be able to use css display: none to hide the column while still being able to retrieve its value.
css:
th.dpass, td.dpass {display: none;}
In datatables init:
"aoColumnDefs": [ { "sClass": "dpass", "aTargets": [ 0 ] } ] // first column in visible columns array gets class "dpass"
//EDIT: remember to add your hidden class to your thead cell also
Knowing how to write a preset dictionary is useful to know as well:
cmap = {'US':'USA','GB':'Great Britain'}
# Explicitly:
# -----------
def cxlate(country):
try:
ret = cmap[country]
except KeyError:
ret = '?'
return ret
present = 'US' # this one is in the dict
missing = 'RU' # this one is not
print cxlate(present) # == USA
print cxlate(missing) # == ?
# or, much more simply as suggested below:
print cmap.get(present,'?') # == USA
print cmap.get(missing,'?') # == ?
# with country codes, you might prefer to return the original on failure:
print cmap.get(present,present) # == USA
print cmap.get(missing,missing) # == RU
There are the following way to select first child
1) $('.second div:first-child')
2) $('.second *:first-child')
3) $('div:first-child', '.second')
4) $('*:first-child', '.second')
5) $('.second div:nth-child(1)')
6) $('.second').children().first()
7) $('.second').children().eq(0)
You can indeed run multiple animations simultaneously, but your example has two problems. First, the syntax you use only specifies one animation. The second style rule hides the first. You can specify two animations using syntax like this:
-webkit-animation-name: spin, scale
-webkit-animation-duration: 2s, 4s
as in this fiddle (where I replaced "scale" with "fade" due to the other problem explained below... Bear with me.): http://jsfiddle.net/rwaldin/fwk5bqt6/
Second, both of your animations alter the same CSS property (transform) of the same DOM element. I don't believe you can do that. You can specify two animations on different elements, the image and a container element perhaps. Just apply one of the animations to the container, as in this fiddle: http://jsfiddle.net/rwaldin/fwk5bqt6/2/
I had a similar problem where the SelectedItem-binding did not update when I selected something in the combobox. My problem was that I had to set UpdateSourceTrigger=PropertyChanged for the binding.
<ComboBox ItemsSource="{Binding SalesPeriods}"
SelectedItem="{Binding SelectedItem, UpdateSourceTrigger=PropertyChanged}" />
install pip: https://pip.pypa.io/en/latest/installing.html
insatll boto: https://github.com/boto/boto
$ git clone git://github.com/boto/boto.git
$ cd boto
$ python setup.py install
Make sure your DataGrid has Width
set to something like {Binding Path=ActualWidth, RelativeSource={RelativeSource Mode=FindAncestor,AncestorType=Window,AncestorLevel=1}}
.
Like that, your setting of Width="*"
attribute on DataGrid.Columns/DataGridXXXXColumn
elements should work.
According to the angularjs event docs the receiving end should be containing arguments with a structure like
@params
-- {Object} event being the event object containing info on the event
-- {Object} args that are passed by the callee (Note that this can only be one so better to send in a dictionary object always)
$scope.$on('fooEvent', function (event, args) { console.log(args) });
From your code
Also if you are trying to get a shared piece of information to be available accross different controllers there is an another way to achieve that and that is angular services.Since the services are singletons information can be stored and fetched across controllers.Simply create getter and setter functions in that service, expose these functions, make global variables in the service and use them to store the info
Another approach is to indicate the languages you intend to support and filter out the rest using the 'resConfigs' option with Gradle.
Check out this other answer for details
This is better, I think, because you don't have to completely ignore legitimate translation mistakes for languages you actually want to support
By the way, a good tip on quickly selecting color on the newer versions of AS is simply to type #fff and then using the color picker on the side of the code to choose the one you want. Quick and easier than remembering all the color hexadecimals. For example:
android:background="#fff"
I found this approach useful. This way you do not need a class nor final
btnInsert.addMouseListener(new MouseAdapter() {
private Statement _statement;
public MouseAdapter setStatement(Statement _stmnt)
{
_statement = _stmnt;
return this;
}
@Override
public void mouseDown(MouseEvent e) {
String name = text.getText();
String from = text_1.getText();
String to = text_2.getText();
String price = text_3.getText();
String query = "INSERT INTO booking (name, fromst, tost, price) VALUES ('"+name+"', '"+from+"', '"+to+"', '"+price+"')";
try {
_statement.executeUpdate(query);
} catch (SQLException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}
}.setStatement(statement));
If you are on android and using threetenbp you can use DateTimeUtils
instead.
ex:
Date date = DateTimeUtils.toDate(localDateTime.atZone(ZoneId.systemDefault()).toInstant());
you can't use Date.from
since it's only supported on api 26+
Another tricky way that just occurred to me (tested and it worked!).
Conditional Formatting
, Highlight Cells
, Duplicate Values
Data
and then Filter
Filter based on color:
Admittedly, this is more for one-off checks of data than a spreadsheet you'll use often, since it requires some formatting changes.
If you are using TCHAR.H
routine (implicitly, or explicitly), be sure you use _ttoi()
function, so that it compiles for both Unicode and ANSI compilations.
More details: https://msdn.microsoft.com/en-us/library/yd5xkb5c.aspx
The other answer is very complete, but here is a rule of thumb:
call
is blocking:
call('notepad.exe')
print('hello') # only executed when notepad is closed
Popen
is non-blocking:
Popen('notepad.exe')
print('hello') # immediately executed
Yes there is.
But OCR is very vast. I know an Android application that has an OCR feature, but that might not be the kind of OCR you are looking after.
This open-source application is called Aedict, and it does OCR on handwritten Japanese characters. It is not that slow.
If it is not what you are looking for, please precise which kind of characters, and which data input (image or X-Y touch history).
Python's dict has 'keys' method, and that is really useful. I think in JavaScript we can have something this:
function keys(){
var k = [];
for(var p in this) {
if(this.hasOwnProperty(p))
k.push(p);
}
return k;
}
Object.defineProperty(Object.prototype, "keys", { value : keys, enumerable:false });
EDIT: But the answer of @carlos-ruana works very well. I tested Object.keys(window), and the result is what I expected.
EDIT after 5 years: it is not good idea to extend Object
, because it can conflict with other libraries that may want to use keys
on their objects and it will lead unpredictable behavior on your project. @carlos-ruana answer is the correct way to get keys of an object.
You can remove elements from ArrayList
using ListIterator
,
ListIterator listIterator = List_Of_Array.listIterator();
/* Use void remove() method of ListIterator to remove an element from List.
It removes the last element returned by next or previous methods.
*/
listIterator.next();
//remove element returned by last next method
listIterator.remove();//remove element at 1st position
listIterator.next();
listIterator.next();
listIterator.remove();//remove element at 3rd position
listIterator.next();
listIterator.next();
listIterator.remove();//remove element at 5th position
Not gonna happen with CSS only
Inline javascript
<a href='index.html'
onmouseover='this.style.textDecoration="none"'
onmouseout='this.style.textDecoration="underline"'>
Click Me
</a>
In a working draft of the CSS2 spec it was declared that you could use pseudo-classes inline like this:
<a href="http://www.w3.org/Style/CSS"
style="{color: blue; background: white} /* a+=0 b+=0 c+=0 */
:visited {color: green} /* a+=0 b+=1 c+=0 */
:hover {background: yellow} /* a+=0 b+=1 c+=0 */
:visited:hover {color: purple} /* a+=0 b+=2 c+=0 */
">
</a>
but it was never implemented in the release of the spec as far as I know.
http://www.w3.org/TR/2002/WD-css-style-attr-20020515#pseudo-rules
If anybody needs to retrive specific RowDataPacket object from multiple queries, here it is.
Before you start
Important: Ensure you enable multipleStatements
in your mysql connection like so:
// Connection to MySQL
var db = mysql.createConnection({
host: 'localhost',
user: 'root',
password: '123',
database: 'TEST',
multipleStatements: true
});
Multiple Queries
Let's say we have multiple queries running:
// All Queries are here
const lastCheckedQuery = `
-- Query 1
SELECT * FROM table1
;
-- Query 2
SELECT * FROM table2;
`
;
// Run the query
db.query(lastCheckedQuery, (error, result) => {
if(error) {
// Show error
return res.status(500).send("Unexpected database error");
}
If we console.log(result)
you'll get such output:
[
[
RowDataPacket {
id: 1,
ColumnFromTable1: 'a',
}
],
[
RowDataPacket {
id: 1,
ColumnFromTable2: 'b',
}
]
]
Both results show for both tables.
Here is where basic Javascript array's come in place https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array
To get data from table1
and column named ColumnFromTable1
we do
result[0][0].ColumnFromTable1 // Notice the double [0]
which gives us result of a
.
@Chris Noe
Note that the space in front of the & becomes part of the previous command. That has bitten me with SET, which happily puts trailing blanks into the value.
To get around the trailing-space being added to an environment variable, wrap the set command in parens.
E.g. FOR /F %%I IN ('DIR "*.*" /B /O:D') DO (SET NewestFile=%%I)
Strace can be used as a debugging tool, or as a primitive profiler.
As a debugger, you can see how given system calls were called, executed and what they return. This is very important, as it allows you to see not only that a program failed, but WHY a program failed. Usually it's just a result of lousy coding not catching all the possible outcomes of a program. Other times it's just hardcoded paths to files. Without strace you get to guess what went wrong where and how. With strace you get a breakdown of a syscall, usually just looking at a return value tells you a lot.
Profiling is another use. You can use it to time execution of each syscalls individually, or as an aggregate. While this might not be enough to fix your problems, it will at least greatly narrow down the list of potential suspects. If you see a lot of fopen/close pairs on a single file, you probably unnecessairly open and close files every execution of a loop, instead of opening and closing it outside of a loop.
Ltrace is strace's close cousin, also very useful. You must learn to differenciate where your bottleneck is. If a total execution is 8 seconds, and you spend only 0.05secs on system calls, then stracing the program is not going to do you much good, the problem is in your code, which is usually a logic problem, or the program actually needs to take that long to run.
The biggest problem with strace/ltrace is reading their output. If you don't know how the calls are made, or at least the names of syscalls/functions, it's going to be difficult to decipher the meaning. Knowing what the functions return can also be very beneficial, especially for different error codes. While it's a pain to decipher, they sometimes really return a pearl of knowledge; once I saw a situation where I ran out of inodes, but not out of free space, thus all the usual utilities didn't give me any warning, I just couldn't make a new file. Reading the error code from strace's output pointed me in the right direction.
Get local file data in js(data.js) load:
function loadMyFile(){
console.log("ut:"+unixTimeSec());
loadScript("data.js?"+unixTimeSec(), loadParse);
}
function loadParse(){
var mA_=mSdata.split("\n");
console.log(mA_.length);
}
function loadScript(url, callback){
var script = document.createElement("script")
script.type = "text/javascript";
if (script.readyState){ //IE
script.onreadystatechange = function(){
if (script.readyState == "loaded" ||
script.readyState == "complete"){
script.onreadystatechange = null;
callback();
}
};
} else { //Others
script.onload = function(){
callback();
};
}
script.src = url;
document.getElementsByTagName("head")[0].appendChild(script);
}
function hereDoc(f) {
return f.toString().
replace(/^[^\/]+\/\*![^\r\n]*[\r\n]*/, "").
replace(/[\r\n][^\r\n]*\*\/[^\/]+$/, "");
}
function unixTimeSec(){
return Math.round( (new Date()).getTime()/1000);
}
file of data.js like:
var mSdata = hereDoc(function() {/*!
17,399
1237,399
BLAHBLAH
BLAHBLAH
155,82
194,376
*/});
dynamic unixTime queryString prevents cached.
AJ works in web http://.
Don't use array_values
on your $row
$res_arr_values = array();
while ($row = mysql_fetch_array($result, MYSQL_ASSOC))
{
array_push($res_arr_values, $row);
}
Also, the preferred way to add a value to an array is writing $array[] = $value;
, not using array_push
$res_arr_values = array();
while ($row = mysql_fetch_array($result, MYSQL_ASSOC))
{
$res_arr_values[] = $row;
}
And a further optimization is not to call mysql_fetch_array($result, MYSQL_ASSOC)
but to use mysql_fetch_assoc($result)
directly.
$res_arr_values = array();
while ($row = mysql_fetch_assoc($result))
{
$res_arr_values[] = $row;
}
Sure. You could use CSS3 text-shadow
:
text-shadow: 0 0 2px #fff;
However it wont show in all browsers right away. Using a script library like Modernizr will help getting it right in most browsers though.
Well, in mathematics to convert a negative number to a positive number you just need to multiple the negative number by -1;
Then your solution could be like this:
a = a * -1;
or shorter:
a *= -1;
I lost for hours for that!
PK in one table was utf8
in other was utf8_unicode_ci
!
Put the h1
and h2
in a container with an id of container
then:
#container {
display: flex;
justify-content: space-beteen;
}
In PyCharm, I'd leave it out. It turns off the UTF-8 indicator at the bottom with a warning that the encoding is hard-coded. Don't think you need the PyCharm comment mentioned above.
Here's what I did to do this. Keep in mind it won't work on IE8 and below.
#element {
width:100%;
height:50px;
background:url(/path/to/image.png);
background-position:140.112201963534% 973.333333333333%;
}
The background image's width will scale down as the parent of #element
scales down. You can do the same with its height, too, if you convert height
to a percentage. The only tricky bit are figuring out the percentages for background-position
.
The first percentage is the width of the targeted area of the sprite when at normal width divided by the sprite's total width, and multiplied by 100.
The second percentage is the height of the targeted area of the sprite before being scaled divided by the sprite's total height, and multiplied by 100.
The wording on those two equations is a little sloppy, so let me know if you need me to explain it better.
While jkp's solution works, the newer way of doing things (and the way the documentation recommends) is to use the subprocess
module. For simple commands its equivalent, but it offers more options if you want to do something complicated.
Example for your case:
import subprocess
subprocess.Popen(["rm","-r","some.file"])
This will run rm -r some.file
in the background. Note that calling .communicate()
on the object returned from Popen
will block until it completes, so don't do that if you want it to run in the background:
import subprocess
ls_output=subprocess.Popen(["sleep", "30"])
ls_output.communicate() # Will block for 30 seconds
See the documentation here.
Also, a point of clarification: "Background" as you use it here is purely a shell concept; technically, what you mean is that you want to spawn a process without blocking while you wait for it to complete. However, I've used "background" here to refer to shell-background-like behavior.
In Xcode 8, all the derived data is automatically cleaned. If you want to do it by hand, go to Locations
tab from the Preferences
, locate project's derived data folder, and delete files related to the project.
In macOS 10.12 and later, Xcode cleans up stale derived data, precompiled headers, and module caches. (23282174)
Credits to @charmingToad
But from what I observed, the same behaviour is typical when using Xcode 8 on OS X 10.11.5/6
try it ! also can calculate NA's data!
df <- data.frame(a1=1:10, a2=11:20)
df %>% summarise_each(funs( mean( .,na.rm = TRUE)))
# a1 a2
# 5.5 15.5
int val = '1' - '0';
This can be done using ascii codes where '0' is the lowest and the number characters count up from there
Instead of importing the logout_view
function, you should provide a string in your urls.py
file:
So not (r'^login/', login_view),
but (r'^login/', 'login.views.login_view'),
That is the standard way of doing things. Then you can access the URL in your templates using:
{% url login.views.login_view %}
Try this
ifnull(X,Y)
e.g
select ifnull(InfoDetail,'') InfoDetail; -- this will replace null with ''
select ifnull(NULL,'THIS IS NULL');-- More clearly....
The ifnull()
function returns a copy of its first non-NULL argument, or NULL if both arguments are NULL. Ifnull()
must have exactly 2 arguments. The ifnull()
function is equivalent to coalesce()
with two arguments.
This snippet works in IE7 at least
<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8 />
<title>Test</title>
<style>
#foo {
position: fixed;
bottom: 0;
right: 0;
}
</style>
</head>
<body>
<div id="foo">Hello World</div>
</body>
</html>
in cmd set Visual Studio path depending upon ur version as
Visual Studio 2010 (VS10): SET VS90COMNTOOLS=%VS100COMNTOOLS%
Visual Studio 2012 (VS11): SET VS90COMNTOOLS=%VS110COMNTOOLS%
Visual Studio 2013 (VS12): SET VS90COMNTOOLS=%VS120COMNTOOLS%
In node-master( original node module downloaded from git ) run vcbuild.bat with admin privileges. vcbild.bat will generate windows related dependencies and will add folder name Release in node-master
Once it run it will take time to build the files.
Then in the directory having .gyp file use command
node-gyp rebuild --msvs_version=2012 --nodedir="Dive Name:\path to node-master\node-master"
this will build all the dependencies.
I know this is an old question, but I stumbled upon the same problem and tried to use the function given in Alex's answer.
But the quality in the jpeg result was too low. So I changed the function a little bit to become more usable in my project and changed the "imagecopyresized" to "imagecopyresampled" (according to this recomendation).
If you are having questions about how to use this function, then try taking a look at the well documented version here.
function createThumbnail($filepath, $thumbpath, $thumbnail_width, $thumbnail_height, $background=false) {
list($original_width, $original_height, $original_type) = getimagesize($filepath);
if ($original_width > $original_height) {
$new_width = $thumbnail_width;
$new_height = intval($original_height * $new_width / $original_width);
} else {
$new_height = $thumbnail_height;
$new_width = intval($original_width * $new_height / $original_height);
}
$dest_x = intval(($thumbnail_width - $new_width) / 2);
$dest_y = intval(($thumbnail_height - $new_height) / 2);
if ($original_type === 1) {
$imgt = "ImageGIF";
$imgcreatefrom = "ImageCreateFromGIF";
} else if ($original_type === 2) {
$imgt = "ImageJPEG";
$imgcreatefrom = "ImageCreateFromJPEG";
} else if ($original_type === 3) {
$imgt = "ImagePNG";
$imgcreatefrom = "ImageCreateFromPNG";
} else {
return false;
}
$old_image = $imgcreatefrom($filepath);
$new_image = imagecreatetruecolor($thumbnail_width, $thumbnail_height); // creates new image, but with a black background
// figuring out the color for the background
if(is_array($background) && count($background) === 3) {
list($red, $green, $blue) = $background;
$color = imagecolorallocate($new_image, $red, $green, $blue);
imagefill($new_image, 0, 0, $color);
// apply transparent background only if is a png image
} else if($background === 'transparent' && $original_type === 3) {
imagesavealpha($new_image, TRUE);
$color = imagecolorallocatealpha($new_image, 0, 0, 0, 127);
imagefill($new_image, 0, 0, $color);
}
imagecopyresampled($new_image, $old_image, $dest_x, $dest_y, 0, 0, $new_width, $new_height, $original_width, $original_height);
$imgt($new_image, $thumbpath);
return file_exists($thumbpath);
}
You need to use the scrollTop
property.
document.getElementById('box').scrollTop
A small change to Paul's code so that it doesn't return the error mentioned above.
dat = melt(subset(iris, select = c("Sepal.Length","Sepal.Width", "Species")),
id.vars = "Species")
dat$x <- c(1:150, 1:150)
ggplot(aes(x = x, y = value, color = variable), data = dat) +
geom_point() + geom_line()
php test.php
should do it, or
php -f test.php
to be explicit.
java code
public void bubbleSort(int[] arr){
boolean isSwapped = true;
for(int i = arr.length - 1; isSwapped; i--){
isSwapped = false;
for(int j = 0; j < i; j++){
if(arr[j] > arr[j+1]}{
int temp = arr[j];
arr[j] = arr[j+1];
arr[j+1] = temp;
isSwapped = true;
}
}
}
}
Use a for
loop instead of .forEach()
var myObj = [{"a": "1","b": null},{"a": "2","b": 5}]
var result = false
for(var call of myObj) {
console.log(call)
var a = call['a'], b = call['b']
if(a == null || b == null) {
result = false
break
}
}
If order is not the matter:
>>> foo='mppmt'
>>> ''.join(set(foo))
'pmt'
To keep the order:
>>> foo='mppmt'
>>> ''.join([j for i,j in enumerate(foo) if j not in foo[:i]])
'mpt'
This works for me:
You want to do:
System.Windows.Forms.Clipboard.SetText("String to be copied to Clipboard");
But it causes an error saying it must be in a single thread of ApartmentState.STA.
So let's make it run in such a thread. The code for it:
public void somethingToRunInThread()
{
System.Windows.Forms.Clipboard.SetText("String to be copied to Clipboard");
}
protected void copy_to_clipboard()
{
Thread clipboardThread = new Thread(somethingToRunInThread);
clipboardThread.SetApartmentState(ApartmentState.STA);
clipboardThread.IsBackground = false;
clipboardThread.Start();
}
After calling copy_to_clipboard()
, the string is copied into the clipboard, so you can Paste or Ctrl + V and get back the string as String to be copied to the clipboard.
Python3 + Using boto3 API approach.
By using S3.Client.download_fileobj API and Python file-like object, S3 Object content can be retrieved to memory.
Since the retrieved content is bytes, in order to convert to str, it need to be decoded.
import io
import boto3
client = boto3.client('s3')
bytes_buffer = io.BytesIO()
client.download_fileobj(Bucket=bucket_name, Key=object_key, Fileobj=bytes_buffer)
byte_value = bytes_buffer.getvalue()
str_value = byte_value.decode() #python3, default decoding is utf-8
To make it into a one liner you can try something like:
svn status | cut -d ' ' -f 8 | xargs svn revert
it works for me, just change: Provider=Microsoft.Jet.OLEDB.4.0 (VS2013)
OleDbConnection connection = new OleDbConnection(
"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=Z:\\GENERAL\\OFMPTP_PD_SG.MDB");
DataSet DS = new DataSet();
connection.Open();
string query =
@"SELECT * from MONTHLYPROD";
OleDbDataAdapter DBAdapter = new OleDbDataAdapter();
DBAdapter.SelectCommand = new OleDbCommand(query, connection);
DBAdapter.Fill(DS);
Luis Montoya
To get the device id, connect your phone to USB and open logcat in android studio Use the code below (make sure you have USB debugging enabled in your device). Then open any app (download any random app from play store) which has google Ad. In the Logcat type "set" as shown in the image. Your device id is shown highlighted in the image as
setTestDeviceIds(Arrays.asList("CC9DW7W7R4H0NM3LT9OLOF7455F8800D")).
Use the Test Device in your code as shown
val adRequest = AdRequest
.Builder()
.addTestDevice(AdRequest.DEVICE_ID_EMULATOR)
.addTestDevice("CC9DW7W7R4H0NM3LT9OLOF7455F8800D")
.build()
Move the cursor to the begining or end with insert mode
I
- Moves the cursor to the first non blank character in the current line and enables insert mode.A
- Moves the cursor to the last character in the current line and enables insert mode.Here I
is equivalent to ^
+ i
. Similarly A
is equivalent to $
+ a
.
Just moving the cursor to the begining or end
^
- Moves the cursor to the first non blank character in the current
line0
- Moves the cursor to the first character in the current line$
- Moves the cursor to the last character in the current linegit show somebranch:path/to/your/file
you can also do multiple files and have them concatenated:
git show branchA~10:fileA branchB^^:fileB
You do not have to provide the full path to the file, relative paths are acceptable e.g.:
git show branchA~10:../src/hello.c
If you want to get the file in the local directory (revert just one file) you can checkout:
git checkout somebranch^^^ -- path/to/file
In order to copy files from HDFS to the local file system the following command could be run:
hadoop dfs -copyToLocal <input> <output>
<input>
: the HDFS directory path (e.g /mydata) that you want to copy<output>
: the destination directory path (e.g. ~/Documents)Here is a working solution - http://jsfiddle.net/STTaf/
I used simple jQuery:
$(function() {
$('li').css('cursor', 'pointer')
.click(function() {
window.location = $('a', this).attr('href');
return false;
});
});
An easy and straightforward solution using the CASE function:
SELECT CASE WHEN ( a > 0 ) THEN (a*-1) ELSE (a*-1) END AS NegativeA,
CASE WHEN ( b > 0 ) THEN (b*-1) ELSE (b*-1) END AS PositiveB
FROM YourTableName
problem is, it is not converted to proper format. Use function "printPreview(binaryPDFData)" to get print preview dialog of binary pdf data. you can comment script part if you don't want print dialog open.
printPreview = (data, type = 'application/pdf') => {
let blob = null;
blob = this.b64toBlob(data, type);
const blobURL = URL.createObjectURL(blob);
const theWindow = window.open(blobURL);
const theDoc = theWindow.document;
const theScript = document.createElement('script');
function injectThis() {
window.print();
}
theScript.innerHTML = `window.onload = ${injectThis.toString()};`;
theDoc.body.appendChild(theScript);
};
b64toBlob = (content, contentType) => {
contentType = contentType || '';
const sliceSize = 512;
// method which converts base64 to binary
const byteCharacters = window.atob(content);
const byteArrays = [];
for (let offset = 0; offset < byteCharacters.length; offset += sliceSize) {
const slice = byteCharacters.slice(offset, offset + sliceSize);
const byteNumbers = new Array(slice.length);
for (let i = 0; i < slice.length; i++) {
byteNumbers[i] = slice.charCodeAt(i);
}
const byteArray = new Uint8Array(byteNumbers);
byteArrays.push(byteArray);
}
const blob = new Blob(byteArrays, {
type: contentType
}); // statement which creates the blob
return blob;
};
Use the following: Long.valueOf(int);
.
$session_start();
extract($_POST);
//extract data from submit post
if(isset($submit))
{
if($user=="user" && $pass=="pass")
{
$_SESSION['user']= $user;
//if correct password and name store in session
}
else {
echo "Invalid user and password";
header("Locatin:form.php");
}
if(isset($_SESSION['user']))
{
//your home page code here
exit;
}
$testArray = [
[
"name" => "Dinesh Madusanka",
"gender" => "male"
],
[
"name" => "Tharaka Devinda",
"gender" => "male"
],
[
"name" => "Dumidu Ranasinghearachchi",
"gender" => "male"
]
];
print_r($testArray);
echo "<pre>";
print_r($testArray);
Microsoft PDF add-in for word seems to be the best solution for now but you should take into consideration that it does not convert all word documents correctly to pdf and in some cases you will see huge difference between the word and the output pdf. Unfortunately I couldn't find any api that would convert all word documents correctly. The only solution I found to ensure the conversion was 100% correct was by converting the documents through a printer driver. The downside is that documents are queued and converted one by one, but you can be sure the resulted pdf is exactly the same as word document layout. I personally preferred using UDC (Universal document converter) and installed Foxit Reader(free version) on server too then printed the documents by starting a "Process" and setting its Verb property to "print". You can also use FileSystemWatcher to set a signal when the conversion has completed.
dec2hex = function (d) {
if (d > 15)
{ return d.toString(16) } else
{ return "0" + d.toString(16) }
}
rgb = function (r, g, b) { return "#" + dec2hex(r) + dec2hex(g) + dec2hex(b) };
and:
parent.childNodes[1].style.color = rgb(155, 102, 102);
It's an old question, but here are some comments...
Just in case someone still facing an error after trying to import CommonModule
, try to restart the server. It surprisingly work
If, like me, you don't have access to the puppet master and need to print debug logs to inspect variables on your puppet client machine, you can try writing to a file from your puppet code itself:
file { '/tmp/puppet_debug.log':
content => inline_template('<%= @variable_x.to_s %>'),
}
An even simpler way to do this is to use jQuery's toggleClass() method
CSS
.newClass{visibility: hidden}
HTML
<a href="#" class=trigger>Trigger Element </a>
<div class="hidden_element">Some Content</div>
JS
$(document).ready(function(){
$(".trigger").click(function(){
$(".hidden_element").toggleClass("newClass");
});
});
Presumably this would work:
IF(compliment = 'set' OR compliment = 'Y' OR compliment = 1, 'Y', 'N') AS customer_compliment
I got tired of forgetting the system_profiler SPUSBDataType
syntax, so I made an lsusb
alternative. You can find it here , or install it with homebrew:
brew install lsusb
You can check out libvideo. It's much more up-to-date than YoutubeExtractor, and is fast and clean to use.
var content = new JsonContent();
content.Headers.ContentType = new MediaTypeHeaderValue("application/json");
content.Headers.ContentType.Parameters.Add(new NameValueHeaderValue("charset", "utf-8"));
content.Headers.ContentType.Parameters.Add(new NameValueHeaderValue("IEEE754Compatible", "true"));
It's all what you need.
With using Newtonsoft.Json, if you need a content as json string.
public class JsonContent : HttpContent
{
private readonly MemoryStream _stream = new MemoryStream();
~JsonContent()
{
_stream.Dispose();
}
public JsonContent(object value)
{
Headers.ContentType = new MediaTypeHeaderValue("application/json");
using (var contexStream = new MemoryStream())
using (var jw = new JsonTextWriter(new StreamWriter(contexStream)) { Formatting = Formatting.Indented })
{
var serializer = new JsonSerializer();
serializer.Serialize(jw, value);
jw.Flush();
contexStream.Position = 0;
contexStream.WriteTo(_stream);
}
_stream.Position = 0;
}
private JsonContent(string content)
{
Headers.ContentType = new MediaTypeHeaderValue("application/json");
using (var contexStream = new MemoryStream())
using (var sw = new StreamWriter(contexStream))
{
sw.Write(content);
sw.Flush();
contexStream.Position = 0;
contexStream.WriteTo(_stream);
}
_stream.Position = 0;
}
protected override Task SerializeToStreamAsync(Stream stream, TransportContext context)
{
return _stream.CopyToAsync(stream);
}
protected override bool TryComputeLength(out long length)
{
length = _stream.Length;
return true;
}
public static HttpContent FromFile(string filepath)
{
var content = File.ReadAllText(filepath);
return new JsonContent(content);
}
public string ToJsonString()
{
return Encoding.ASCII.GetString(_stream.GetBuffer(), 0, _stream.GetBuffer().Length).Trim();
}
}
It also happens when apple developer account expires for stopped payment. The old cert may be still usable to debug breakpoint for a week or few. Then one day all the sudden debug stepping on iPhone devices will be denied.
The solution is re-generate cert after paying for developer account. It may take some hours to get activated by apple.
Remember to delete old certs(ios dev, apple worldwide,) in keychain app of your mac. Revoke old cert in apple developer website optionally for cleanup. And create new one (with xcode directly is also fine) That will enable iphone debug.
Is it correct to do the following?
IF EXISTS(SELECT * FROM dbo.Scores) DROP TABLE dbo.Scores
No. That will drop the table only if it contains any rows (and will raise an error if the table does not exist).
Instead, for a permanent table you can use
IF OBJECT_ID('dbo.Scores', 'U') IS NOT NULL
DROP TABLE dbo.Scores;
Or, for a temporary table you can use
IF OBJECT_ID('tempdb.dbo.#TempTableName', 'U') IS NOT NULL
DROP TABLE #TempTableName;
SQL Server 2016+ has a better way, using DROP TABLE IF EXISTS …
. See the answer by @Jovan.
I recently run into this question in my work place so I think I should say something more here. I will use image to explain how the FTP works as an additional source for previous answer.
Active mode:
Passive mode:
In an active mode configuration, the server will attempt to connect to a random client-side port. So chances are, that port wouldn't be one of those predefined ports. As a result, an attempt to connect to it will be blocked by the firewall and no connection will be established.
A passive configuration will not have this problem since the client will be the one initiating the connection. Of course, it's possible for the server side to have a firewall too. However, since the server is expected to receive a greater number of connection requests compared to a client, then it would be but logical for the server admin to adapt to the situation and open up a selection of ports to satisfy passive mode configurations.
So it would be best for you to configure server to support passive mode FTP. However, passive mode would make your system vulnerable to attacks because clients are supposed to connect to random server ports. Thus, to support this mode, not only should your server have to have multiple ports available, your firewall should also allow connections to all those ports to pass through!
To mitigate the risks, a good solution would be to specify a range of ports on your server and then to allow only that range of ports on your firewall.
For more information, please read the official document.
:datetime (8 bytes)
:timestamp (4 bytes)
Actually one detail is missing from the answer that is selected as accepted (from Phil Ross)....
it DOES work in Chrome, and the solution is really silly!!
Both the parent and the element onto which you want to control page-breaking must be declared as:
position: relative
check out this fiddle: http://jsfiddle.net/petersphilo/QCvA5/5/show/
This is true for:
page-break-before
page-break-after
page-break-inside
However, controlling page-break-inside in Safari does not work (in 5.1.7, at least)
i hope this helps!!!
PS: The question below brought up that fact that recent versions of Chrome no longer respect this, even with the position: relative; trick. However, they do seem to respect:
-webkit-region-break-inside: avoid;
see this fiddle: http://jsfiddle.net/petersphilo/QCvA5/23/show
so i guess we have to add that now...
Hope this helps!
Well, this should really be broken into 2 parts:
I'm not sure how you do it in Windows land, but in *nix land there are functions buried in the Bluez stack that let you receive notifications about when a new device appears, and send it the pairing code (clearly there have to be these functions: those are what the user interface use). Given sufficient time and experience I'm sure you could figure out how to write your own version of the Bluetooth Settings app that somehow:
All without having to pop up a user interface.
If you go ahead and write the code I'd LOVE to get my hands on it.
You can add + behind the variable and it will force it to be an integer
var dots = 5
function increase(){
dots = +dots + 5;
}
It should be a problem in your version of grep.
Your test cases are working correctly here on my machine:
$ echo "abc" | grep -io abc
abc
$ echo "ABC" | grep -io abc
ABC
And my version is:
$ grep --version
grep (GNU grep) 2.10
In summary, the yield
statement transforms your function into a factory that produces a special object called a generator
which wraps around the body of your original function. When the generator
is iterated, it executes your function until it reaches the next yield
then suspends execution and evaluates to the value passed to yield
. It repeats this process on each iteration until the path of execution exits the function. For instance,
def simple_generator():
yield 'one'
yield 'two'
yield 'three'
for i in simple_generator():
print i
simply outputs
one
two
three
The power comes from using the generator with a loop that calculates a sequence, the generator executes the loop stopping each time to 'yield' the next result of the calculation, in this way it calculates a list on the fly, the benefit being the memory saved for especially large calculations
Say you wanted to create a your own range
function that produces an iterable range of numbers, you could do it like so,
def myRangeNaive(i):
n = 0
range = []
while n < i:
range.append(n)
n = n + 1
return range
and use it like this;
for i in myRangeNaive(10):
print i
But this is inefficient because
Luckily Guido and his team were generous enough to develop generators so we could just do this;
def myRangeSmart(i):
n = 0
while n < i:
yield n
n = n + 1
return
for i in myRangeSmart(10):
print i
Now upon each iteration a function on the generator called next()
executes the function until it either reaches a 'yield' statement in which it stops and 'yields' the value or reaches the end of the function. In this case on the first call, next()
executes up to the yield statement and yield 'n', on the next call it will execute the increment statement, jump back to the 'while', evaluate it, and if true, it will stop and yield 'n' again, it will continue that way until the while condition returns false and the generator jumps to the end of the function.
This is how I solved this issue:
git pull origin master
git push origin master
This usually happens when your remote branch is not updated. And after this if you get an error like "Please enter a commit message" Refer to this ( For me xiaohu Wang answer worked :) )
In my case I found this to be an issue with InnoDB; I never discovered what the actual problem was, but creating as a MyISAM allowed it to build
check this out:
fun requestMyGpsLocation(context: Context, callback: (location: Location) -> Unit) {
val request = LocationRequest()
// request.interval = 10000
// request.fastestInterval = 5000
request.numUpdates = 1
request.priority = LocationRequest.PRIORITY_HIGH_ACCURACY
val client = LocationServices.getFusedLocationProviderClient(context)
val permission = ContextCompat.checkSelfPermission(context,
Manifest.permission.ACCESS_FINE_LOCATION )
if (permission == PackageManager.PERMISSION_GRANTED) {
client.requestLocationUpdates(request, object : LocationCallback() {
override fun onLocationResult(locationResult: LocationResult?) {
val location = locationResult?.lastLocation
if (location != null)
callback.invoke(location)
}
}, null)
}
}
and
fun zoomOnMe() {
requestMyGpsLocation(this) { location ->
mMap?.animateCamera(CameraUpdateFactory.newLatLngZoom(
LatLng(location.latitude,location.longitude ), 13F ))
}
}
Many answers here tells to delete a specific k8s object, but you can delete multiple objects at once, instead of one by one:
kubectl delete deployments,jobs,services,pods --all -n <namespace>
In my case, I'm running OpenShift cluster with OLM - Operator Lifecycle Manager. OLM is the one who controls the deployment, so when I deleted the deployment, it was not sufficient to stop the pods from restarting.
Only when I deleted OLM and its subscription, the deployment, services and pods were gone.
First list all k8s objects in your namespace:
$ kubectl get all -n openshift-submariner
NAME READY STATUS RESTARTS AGE
pod/submariner-operator-847f545595-jwv27 1/1 Running 0 8d
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
service/submariner-operator-metrics ClusterIP 101.34.190.249 <none> 8383/TCP 8d
NAME READY UP-TO-DATE AVAILABLE AGE
deployment.apps/submariner-operator 1/1 1 1 8d
NAME DESIRED CURRENT READY AGE
replicaset.apps/submariner-operator-847f545595 1 1 1 8d
OLM is not listed with get all
, so I search for it specifically:
$ kubectl get olm -n openshift-submariner
NAME AGE
operatorgroup.operators.coreos.com/openshift-submariner 8d
NAME DISPLAY VERSION
clusterserviceversion.operators.coreos.com/submariner-operator Submariner 0.0.1
Now delete all objects, including OLMs, subscriptions, deployments, replica-sets, etc:
$ kubectl delete olm,svc,rs,rc,subs,deploy,jobs,pods --all -n openshift-submariner
operatorgroup.operators.coreos.com "openshift-submariner" deleted
clusterserviceversion.operators.coreos.com "submariner-operator" deleted
deployment.extensions "submariner-operator" deleted
subscription.operators.coreos.com "submariner" deleted
service "submariner-operator-metrics" deleted
replicaset.extensions "submariner-operator-847f545595" deleted
pod "submariner-operator-847f545595-jwv27" deleted
List objects again - all gone:
$ kubectl get all -n openshift-submariner
No resources found.
$ kubectl get olm -n openshift-submariner
No resources found.
In addition to cookies and localStorage
, there's at least one other place you can store "semi-persistent" client data: window.name
. Any string value you assign to window.name
will stay there until the window is closed.
To test it out, just open the console and type window.name = "foo"
, then refresh the page and type window.name
; it should respond with foo
.
This is a bit of a hack, but if you don't want cookies filled with unnecessary data being sent to the server with every request, and if you can't use localStorage
for whatever reason (legacy clients), it may be an option to consider.
window.name
has another interesting property: it's visible to windows served from other domains; it's not subject to the same-origin policy like nearly every other property of window
. So, in addition to storing "semi-persistent" data there while the user navigates or refreshes the page, you can also use it for CORS-free cross-domain communication.
Note that window.name
can only store strings, but with the wide availability of JSON
, this shouldn't be much of an issue even for complex data.
CSS is called Cascading Style Sheets because the rules are inherited. Using the following selector, will select just the direct child of the parent, but its rules will be inherited by that div
's children divs
:
div.section > div { color: red }
Now, both that div
and its children will be red
. You need to cancel out whatever you set on the parent if you don't want it to inherit:
div.section > div { color: red }
div.section > div div { color: black }
Now only that single div
that is a direct child of div.section
will be red, but its children divs
will still be black.
They are related but are neither dependent nor mutually exclusive. If a graph has an Eurler cycle, it may or may not also have a Hamiltonian cyle and vice versa.
Euler cycles visit every edge in the graph exactly once. If there are vertices in the graph with more than two edges, then by definition, the cycle will pass through those vertices more than once. As a result, vertices can be repeated but edges cannot.
Hamiltonian cycles visit every vertex in the graph exactly once (similar to the travelling salesman problem). As a result, neither edges nor vertices can be repeated.
I think it is much more simple solution:
window.location = (""+window.location).replace(/#[A-Za-z0-9_]*$/,'')+"#myAnchor"
This method does not reload the website, and sets the focus on the anchors which are needed for screen reader.
Your regex is good altough I would replace it with the empty string
String resultString = subjectString.replaceAll("[\t\n\r]", "");
You expect a space between "text." and "And" right?
I get that space when I try the regex by copying your sample
"This is my text. "
So all is well here. Maybe if you just replace it with the empty string it will work. I don't know why you replace it with \s. And the alternation | is not necessary in a character class.
Run this in your console
var script = document.createElement('script');script.src = "https://code.jquery.com/jquery-3.4.1.min.js";document.getElementsByTagName('head')[0].appendChild(script);
It creates a new script tag, fills it with jQuery and appends to the head.
In SQL Server, you would say:
Select name from users
UNION [ALL]
SELECT 'JASON'
In Oracle, you would say
Select name from user
UNION [ALL]
Select 'JASON' from DUAL
Replaced the reader declaration with this one and now it works!
Dim reader As New StreamReader(filetoimport.Text, Encoding.Default)
Encoding.Default represents the ANSI code page that is set under Windows Control Panel.
For right to left (entry animation) and left to right (exit animation):
styles.xml:
<style name="CustomDialog" parent="@android:style/Theme.Dialog">
<item name="android:windowAnimationStyle">@style/CustomDialogAnimation</item>
</style>
<style name="CustomDialogAnimation">
<item name="android:windowEnterAnimation">@anim/translate_left_side</item>
<item name="android:windowExitAnimation">@anim/translate_right_side</item>
</style>
Create two files in res/anim/:
translate_right_side.xml:
<?xml version="1.0" encoding="utf-8"?>
<translate xmlns:android="http://schemas.android.com/apk/res/android"
android:fromXDelta="0%" android:toXDelta="100%"
android:fromYDelta="0%" android:toYDelta="0%"
android:duration="600"/>
translate_left_side.xml:
<?xml version="1.0" encoding="utf-8"?>
<translate xmlns:android="http://schemas.android.com/apk/res/android"
android:duration="600"
android:fromXDelta="100%"
android:toXDelta="0%"/>
In you Fragment/Activity:
Dialog dialog = new Dialog(getActivity(), R.style.CustomDialog);
Why do you need to attach it to the HTML? Just bind the function with hover
$("div.system_box").hover(function(){ mousin },
function() { mouseout });
If you do insist to have JS references inside the html, which is usualy a bad idea you can use:
onmouseover="yourJavaScriptCode()"
<div class="system_box" data-target="sms_box">
...
$("div.system_box").click(function(){ slideonlyone($(this).attr("data-target")); });
you can also do it like that :
$ver = $em->getRepository('GedDocumentBundle:version')->search($val);
$tail = sizeof($ver);
Either make your friends download the runtime DLL (@Kay's answer), or compile the app with static linking.
In visual studio, go to Project tab -> properties - > configuration properties -> C/C++ -> Code Generation
on runtime library choose /MTd
for debug mode and /MT
for release mode.
This will cause the compiler to embed the runtime into the app. The executable will be significantly bigger, but it will run without any need of runtime dlls.
Better to find cells from gridview instead of static/fix index so it will not generate any problem whenever you will add/remove any columns on gridview.
ASPX:
<asp:GridView ID="GridView1" OnRowDataBound="GridView1_RowDataBound" >
<Columns>
<asp:BoundField HeaderText="Date" DataField="CreatedDate" />
</Columns>
</asp:GridView>
CS:
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.Header)
{
for (int i = 0; i < e.Row.Cells.Count; i++)
{
if (string.Compare(e.Row.Cells[i].Text, "Date", true) == 0)
{
e.Row.Cells[i].Text = "Created Date";
}
}
}
}
The output of the error, is because you call an index of the Array that does not exist, for example
$arr = Array(1,2,3);
echo $arr[3];
// Error PHP Notice: Undefined offset: 1 pointer 3 does not exist, the array only has 3 elements but starts at 0 to 2, not 3!
With windows7, python2.7, opencv 3.0, the following works for me:
import cv2
import os
vvw = cv2.VideoWriter('mymovie.avi',cv2.VideoWriter_fourcc('X','V','I','D'),24,(640,480))
frameslist = os.listdir('.\\frames')
howmanyframes = len(frameslist)
print('Frames count: '+str(howmanyframes)) #just for debugging
for i in range(0,howmanyframes):
print(i)
theframe = cv2.imread('.\\frames\\'+frameslist[i])
vvw.write(theframe)
I use Node.js at work, and find it to be very powerful. Forced to choose one word to describe Node.js, I'd say "interesting" (which is not a purely positive adjective). The community is vibrant and growing. JavaScript, despite its oddities can be a great language to code in. And you will daily rethink your own understanding of "best practice" and the patterns of well-structured code. There's an enormous energy of ideas flowing into Node.js right now, and working in it exposes you to all this thinking - great mental weightlifting.
Node.js in production is definitely possible, but far from the "turn-key" deployment seemingly promised by the documentation. With Node.js v0.6.x, "cluster" has been integrated into the platform, providing one of the essential building blocks, but my "production.js" script is still ~150 lines of logic to handle stuff like creating the log directory, recycling dead workers, etc. For a "serious" production service, you also need to be prepared to throttle incoming connections and do all the stuff that Apache does for PHP. To be fair, Ruby on Rails has this exact problem. It is solved via two complementary mechanisms: 1) Putting Ruby on Rails/Node.js behind a dedicated webserver (written in C and tested to hell and back) like Nginx (or Apache / Lighttd). The webserver can efficiently serve static content, access logging, rewrite URLs, terminate SSL, enforce access rules, and manage multiple sub-services. For requests that hit the actual node service, the webserver proxies the request through. 2) Using a framework like Unicorn that will manage the worker processes, recycle them periodically, etc. I've yet to find a Node.js serving framework that seems fully baked; it may exist, but I haven't found it yet and still use ~150 lines in my hand-rolled "production.js".
Reading frameworks like Express makes it seem like the standard practice is to just serve everything through one jack-of-all-trades Node.js service ... "app.use(express.static(__dirname + '/public'))". For lower-load services and development, that's probably fine. But as soon as you try to put big time load on your service and have it run 24/7, you'll quickly discover the motivations that push big sites to have well baked, hardened C-code like Nginx fronting their site and handling all of the static content requests (...until you set up a CDN, like Amazon CloudFront)). For a somewhat humorous and unabashedly negative take on this, see this guy.
Node.js is also finding more and more non-service uses. Even if you are using something else to serve web content, you might still use Node.js as a build tool, using npm modules to organize your code, Browserify to stitch it into a single asset, and uglify-js to minify it for deployment. For dealing with the web, JavaScript is a perfect impedance match and frequently that makes it the easiest route of attack. For example, if you want to grovel through a bunch of JSON response payloads, you should use my underscore-CLI module, the utility-belt of structured data.
For another perspective on JavaScript and Node.js, check out From Java to Node.js, a blog post on a Java developer's impressions and experiences learning Node.js.
Modules When considering node, keep in mind that your choice of JavaScript libraries will DEFINE your experience. Most people use at least two, an asynchronous pattern helper (Step, Futures, Async), and a JavaScript sugar module (Underscore.js).
Helper / JavaScript Sugar:
Asynchronous Pattern Modules:
Or to read all about the asynchronous libraries, see this panel-interview with the authors.
Web Framework:
Testing:
Also, check out the official list of recommended Node.js modules. However, GitHub's Node Modules Wiki is much more complete and a good resource.
To understand Node, it's helpful to consider a few of the key design choices:
Node.js is EVENT BASED and ASYNCHRONOUS / NON-BLOCKING. Events, like an incoming HTTP connection will fire off a JavaScript function that does a little bit of work and kicks off other asynchronous tasks like connecting to a database or pulling content from another server. Once these tasks have been kicked off, the event function finishes and Node.js goes back to sleep. As soon as something else happens, like the database connection being established or the external server responding with content, the callback functions fire, and more JavaScript code executes, potentially kicking off even more asynchronous tasks (like a database query). In this way, Node.js will happily interleave activities for multiple parallel workflows, running whatever activities are unblocked at any point in time. This is why Node.js does such a great job managing thousands of simultaneous connections.
Why not just use one process/thread per connection like everyone else? In Node.js, a new connection is just a very small heap allocation. Spinning up a new process takes significantly more memory, a megabyte on some platforms. But the real cost is the overhead associated with context-switching. When you have 10^6 kernel threads, the kernel has to do a lot of work figuring out who should execute next. A bunch of work has gone into building an O(1) scheduler for Linux, but in the end, it's just way way more efficient to have a single event-driven process than 10^6 processes competing for CPU time. Also, under overload conditions, the multi-process model behaves very poorly, starving critical administration and management services, especially SSHD (meaning you can't even log into the box to figure out how screwed it really is).
Node.js is SINGLE THREADED and LOCK FREE. Node.js, as a very deliberate design choice only has a single thread per process. Because of this, it's fundamentally impossible for multiple threads to access data simultaneously. Thus, no locks are needed. Threads are hard. Really really hard. If you don't believe that, you haven't done enough threaded programming. Getting locking right is hard and results in bugs that are really hard to track down. Eliminating locks and multi-threading makes one of the nastiest classes of bugs just go away. This might be the single biggest advantage of node.
But how do I take advantage of my 16 core box?
Two ways:
Node.js lets you do some really powerful things without breaking a sweat. Suppose you have a Node.js program that does a variety of tasks, listens on a TCP port for commands, encodes some images, whatever. With five lines of code, you can add in an HTTP based web management portal that shows the current status of active tasks. This is EASY to do:
var http = require('http');
http.createServer(function (req, res) {
res.writeHead(200, {'Content-Type': 'text/plain'});
res.end(myJavascriptObject.getSomeStatusInfo());
}).listen(1337, "127.0.0.1");
Now you can hit a URL and check the status of your running process. Add a few buttons, and you have a "management portal". If you have a running Perl / Python / Ruby script, just "throwing in a management portal" isn't exactly simple.
But isn't JavaScript slow / bad / evil / spawn-of-the-devil? JavaScript has some weird oddities, but with "the good parts" there's a very powerful language there, and in any case, JavaScript is THE language on the client (browser). JavaScript is here to stay; other languages are targeting it as an IL, and world class talent is competing to produce the most advanced JavaScript engines. Because of JavaScript's role in the browser, an enormous amount of engineering effort is being thrown at making JavaScript blazing fast. V8 is the latest and greatest javascript engine, at least for this month. It blows away the other scripting languages in both efficiency AND stability (looking at you, Ruby). And it's only going to get better with huge teams working on the problem at Microsoft, Google, and Mozilla, competing to build the best JavaScript engine (It's no longer a JavaScript "interpreter" as all the modern engines do tons of JIT compiling under the hood with interpretation only as a fallback for execute-once code). Yeah, we all wish we could fix a few of the odder JavaScript language choices, but it's really not that bad. And the language is so darn flexible that you really aren't coding JavaScript, you are coding Step or jQuery -- more than any other language, in JavaScript, the libraries define the experience. To build web applications, you pretty much have to know JavaScript anyway, so coding with it on the server has a sort of skill-set synergy. It has made me not dread writing client code.
Besides, if you REALLY hate JavaScript, you can use syntactic sugar like CoffeeScript. Or anything else that creates JavaScript code, like Google Web Toolkit (GWT).
Speaking of JavaScript, what's a "closure"? - Pretty much a fancy way of saying that you retain lexically scoped variables across call chains. ;) Like this:
var myData = "foo";
database.connect( 'user:pass', function myCallback( result ) {
database.query("SELECT * from Foo where id = " + myData);
} );
// Note that doSomethingElse() executes _BEFORE_ "database.query" which is inside a callback
doSomethingElse();
See how you can just use "myData" without doing anything awkward like stashing it into an object? And unlike in Java, the "myData" variable doesn't have to be read-only. This powerful language feature makes asynchronous-programming much less verbose and less painful.
Writing asynchronous code is always going to be more complex than writing a simple single-threaded script, but with Node.js, it's not that much harder and you get a lot of benefits in addition to the efficiency and scalability to thousands of concurrent connections...
You can't close sockets on your server without owning those sockets hence you can't actually close the socket down without having code running in the process that owns the server socket.
However, there is another option which is telling the client to close its socket. Sending a RST TCP packet to the port the client is connecting on will cause the client to drop their connection. You can do that with RST scanning using nmap.
Do you even need them to be input elements in the first place? You can use Javascript to dynamically create divs or paragraphs or list items or whatever that contain the information you want to present.
But if the interactive element is important and it's a pain in the butt to place those elements outside the <form>
block, it ought to be possible to remove those elements from the form when the page gets submitted.
If you just want to use AWT, then use Graphics.getFontMetrics
(optionally specifying the font, for a non-default one) to get a FontMetrics
and then FontMetrics.stringWidth
to find the width for the specified string.
For example, if you have a Graphics
variable called g
, you'd use:
int width = g.getFontMetrics().stringWidth(text);
For other toolkits, you'll need to give us more information - it's always going to be toolkit-dependent.
1.) Create an arraylist of appropriate type, in this case i.e String
2.) Create a JSONObject
while passing your string to JSONObject
constructor as input
JSONObject
notation is represented by braces i.e {}
JSONArray
notation is represented by square brackets i.e []
3.) Retrieve JSONArray
from JSONObject
(created at 2nd step) using "interests"
as index.
4.) Traverse JASONArray
using loops upto the length of array provided by length()
function
5.) Retrieve your JSONObjects
from JSONArray
using getJSONObject(index)
function
6.) Fetch the data from JSONObject
using index '"interestKey"'.
Note : JSON
parsing uses the escape sequence for special nested characters if the json response (usually from other JSON response APIs) contains quotes ("
) like this
`"{"key":"value"}"`
should be like this
`"{\"key\":\"value\"}"`
so you can use JSONParser
to achieve escaped sequence format for safety as
JSONParser parser = new JSONParser();
JSONObject json = (JSONObject) parser.parse(inputString);
Code :
JSONParser parser = new JSONParser();
String response = "{interests : [{interestKey:Dogs}, {interestKey:Cats}]}";
JSONObject jsonObj = (JSONObject) parser.parse(response);
or
JSONObject jsonObj = new JSONObject("{interests : [{interestKey:Dogs}, {interestKey:Cats}]}");
List<String> interestList = new ArrayList<String>();
JSONArray jsonArray = jsonObj.getJSONArray("interests");
for(int i = 0 ; i < jsonArray.length() ; i++){
interestList.add(jsonArray.getJSONObject(i).optString("interestKey"));
}
Note : Sometime you may see some exceptions when the values are not available in appropriate type or is there is no mapping key
so in those cases when you are not sure about the presence of value so use optString
, optInt
, optBoolean
etc which will simply return the default value if it is not present and even try to convert value to int if it is of string type and vice-versa so Simply No null or NumberFormat exceptions at all in case of missing key or value
Get an optional string associated with a key. It returns the defaultValue if there is no such key.
public String optString(String key, String defaultValue) {
String missingKeyValue = json_data.optString("status","N/A");
// note there is no such key as "status" in response
// will return "N/A" if no key found
or To get empty string i.e ""
if no key found then simply use
String missingKeyValue = json_data.optString("status");
// will return "" if no key found where "" is an empty string
Further reference to study
dumps
takes an object and produces a string:
>>> a = {'foo': 3}
>>> json.dumps(a)
'{"foo": 3}'
load
would take a file-like object, read the data from that object, and use that string to create an object:
with open('file.json') as fh:
a = json.load(fh)
Note that dump
and load
convert between files and objects, while dumps
and loads
convert between strings and objects. You can think of the s
-less functions as wrappers around the s
functions:
def dump(obj, fh):
fh.write(dumps(obj))
def load(fh):
return loads(fh.read())
see my answer here:
How can I get the current date and time in UTC or GMT in Java?
I've fully tested it by changing the timezones on the emulator
"but does that mean it should just be an example of the sort of expression you could use, or should it be an actual expression, that can be executed (eval etc..) to recreate the object? Or... should it be just a rehasing of the actual expression which was used, for pure information purposes?"
Wow, that's a lot of hand-wringing.
An "an example of the sort of expression you could use" would not be a representation of a specific object. That can't be useful or meaningful.
What is the difference between "an actual expression, that can ... recreate the object" and "a rehasing of the actual expression which was used [to create the object]"? Both are an expression that creates the object. There's no practical distinction between these. A repr call could produce either a new expression or the original expression. In many cases, they're the same.
Note that this isn't always possible, practical or desirable.
In some cases, you'll notice that repr() presents a string which is clearly not an expression of any kind. The default repr() for any class you define isn't useful as an expression.
In some cases, you might have mutual (or circular) references between objects. The repr() of that tangled hierarchy can't make sense.
In many cases, an object is built incrementally via a parser. For example, from XML or JSON or something. What would the repr be? The original XML or JSON? Clearly not, since they're not Python. It could be some Python expression that generated the XML. However, for a gigantic XML document, it might not be possible to write a single Python expression that was the functional equivalent of parsing XML.
Although this is probably not that appropriate for this situation I found out the other day that you can also use the delete
keyword to remove an item from an array if you don't need to alter the size of the array e.g.
var myArray = [1,2,3];
delete myArray[1];
console.log(myArray[1]); //undefined
console.log(myArray.length); //3 - doesn't actually shrink the array down
Maybe a bit late to post an answer for this, but I found some of the above solutions a bit cumbersome.
I tried simple string replacement in sed and it worked:
sed 's/CLIENTSCRIPT="foo"/&\nCLIENTSCRIPT2="hello"/' file
& sign reflects the matched string, and then you add \n and the new line.
As mentioned, if you want to do it in-place:
sed -i 's/CLIENTSCRIPT="foo"/&\nCLIENTSCRIPT2="hello"/' file
Another thing. You can match using an expression:
sed -i 's/CLIENTSCRIPT=.*/&\nCLIENTSCRIPT2="hello"/' file
Hope this helps someone
I used a GA to optimize seating assignments at my wedding reception. 80 guests over 10 tables. Evaluation function was based on keeping people with their dates, putting people with something in common together, and keeping people with extreme opposite views at separate tables.
I ran it several times. Each time, I got nine good tables, and one with all the odd balls. In the end, my wife did the seating assignments.
My traveling salesman optimizer used a novel mapping of chromosome to itinerary, which made it trivial to breed and mutate the chromosomes without any risk of generating invalid tours.
Update: Because a couple people have asked how ...
Start with an array of guests (or cities) in some arbitrary but consistent ordering, e.g., alphabetized. Call this the reference solution. Think of a guest's index as his/her seat number.
Instead of trying to encode this ordering directly in the chromosome, we encode instructions for transforming the reference solution into a new solution. Specifically, we treat the chromosomes as lists of indexes in the array to swap. To get decode a chromosome, we start with the reference solution and apply all the swaps indicated by the chromosome. Swapping two entries in the array always results in a valid solution: every guest (or city) still appears exactly once.
Thus chromosomes can be randomly generated, mutated, and crossed with others and will always produce a valid solution.
Same as AMIB answer, for soft delete error "Unknown column 'table_alias.deleted_at'",
just add ->withTrashed()
then handle it yourself like ->whereRaw('items_alias.deleted_at IS NULL')
For "simple" strings (typically what fits into a line) the simplest solution is using fmt.Sprintf()
and friends (fmt.Sprint()
, fmt.Sprintln()
). These are analogous to the functions without the starter S
letter, but these Sxxx()
variants return the result as a string
instead of printing them to the standard output.
For example:
s := fmt.Sprintf("Hi, my name is %s and I'm %d years old.", "Bob", 23)
The variable s
will be initialized with the value:
Hi, my name is Bob and I'm 23 years old.
Tip: If you just want to concatenate values of different types, you may not automatically need to use Sprintf()
(which requires a format string) as Sprint()
does exactly this. See this example:
i := 23
s := fmt.Sprint("[age:", i, "]") // s will be "[age:23]"
For concatenating only string
s, you may also use strings.Join()
where you can specify a custom separator string
(to be placed between the strings to join).
Try these on the Go Playground.
If the string you're trying to create is more complex (e.g. a multi-line email message), fmt.Sprintf()
becomes less readable and less efficient (especially if you have to do this many times).
For this the standard library provides the packages text/template
and html/template
. These packages implement data-driven templates for generating textual output. html/template
is for generating HTML output safe against code injection. It provides the same interface as package text/template
and should be used instead of text/template
whenever the output is HTML.
Using the template
packages basically requires you to provide a static template in the form of a string
value (which may be originating from a file in which case you only provide the file name) which may contain static text, and actions which are processed and executed when the engine processes the template and generates the output.
You may provide parameters which are included/substituted in the static template and which may control the output generation process. Typical form of such parameters are struct
s and map
values which may be nested.
Example:
For example let's say you want to generate email messages that look like this:
Hi [name]!
Your account is ready, your user name is: [user-name]
You have the following roles assigned:
[role#1], [role#2], ... [role#n]
To generate email message bodies like this, you could use the following static template:
const emailTmpl = `Hi {{.Name}}!
Your account is ready, your user name is: {{.UserName}}
You have the following roles assigned:
{{range $i, $r := .Roles}}{{if $i}}, {{end}}{{.}}{{end}}
`
And provide data like this for executing it:
data := map[string]interface{}{
"Name": "Bob",
"UserName": "bob92",
"Roles": []string{"dbteam", "uiteam", "tester"},
}
Normally output of templates are written to an io.Writer
, so if you want the result as a string
, create and write to a bytes.Buffer
(which implements io.Writer
). Executing the template and getting the result as string
:
t := template.Must(template.New("email").Parse(emailTmpl))
buf := &bytes.Buffer{}
if err := t.Execute(buf, data); err != nil {
panic(err)
}
s := buf.String()
This will result in the expected output:
Hi Bob!
Your account is ready, your user name is: bob92
You have the following roles assigned:
dbteam, uiteam, tester
Try it on the Go Playground.
Also note that since Go 1.10, a newer, faster, more specialized alternative is available to bytes.Buffer
which is: strings.Builder
. Usage is very similar:
builder := &strings.Builder{}
if err := t.Execute(builder, data); err != nil {
panic(err)
}
s := builder.String()
Try this one on the Go Playground.
Note: you may also display the result of a template execution if you provide os.Stdout
as the target (which also implements io.Writer
):
t := template.Must(template.New("email").Parse(emailTmpl))
if err := t.Execute(os.Stdout, data); err != nil {
panic(err)
}
This will write the result directly to os.Stdout
. Try this on the Go Playground.
You should try HttpAutoindexModule.
Set autoindex option to on
. It is off by default.
Your example configuration should be ok
location /{
root /home/yozloy/html/;
index index.html;
autoindex on;
}
Without autoindex option you should be getting Error 403 for requests that end with /
on directories that do not have an index.html
file. With this option you should be getting a simple listing:
<html>
<head><title>Index of /</title></head>
<body bgcolor="white">
<h1>Index of /test/</h1><hr><pre><a href="../">../</a>
<a href="test.txt">test.txt</a> 19-May-2012 10:43 0
</pre><hr></body>
</html>
Edit: Updated the listing to delete any references to test
Array.prototype.find
is not supported in any version of IE
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/find
std::fill(a.begin(),a.end(),0);
I Hope that will help
$.each(myobj, function(index, value) {
console.log(myobj[index]);
)};
On the newer versions of macOS, one also has to set java.library.path
. The easiest/safest way to do that [1] is by creating ~/.sqldeveloper/<version>/sqldeveloper.conf
file and populating it as such:
AddVMOption -Djava.library.path=<instant client directory>
Wrap whatever you are trying to center around this div.
<div class="position-absolute top-50 start-50 translate-middle"></div>
You can target that div from your stylesheet in a number of ways.
Simply use
.col-md-6:first-child {
background-color: blue;
}
Another way is to assign a class to one div and then apply the style to that class.
<div class="col-md-6 blue"></div>
.blue {
background-color: blue;
}
There are also inline styles.
<div class="col-md-6" style="background-color: blue"></div>
Your example code works fine to me. I'm not sure if I undestand what you intend to do, but if you want a blue background on the second div just remove the bg-primary
class from the section and add you custom class to the div.
.blue {_x000D_
background-color: blue;_x000D_
}
_x000D_
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"/>_x000D_
_x000D_
<section id="about">_x000D_
<div class="container">_x000D_
<div class="row">_x000D_
<!-- Columns are always 50% wide, on mobile and desktop -->_x000D_
<div class="col-xs-6">_x000D_
<h2 class="section-heading text-center">Title</h2>_x000D_
<p class="text-faded text-center">.col-md-6</p>_x000D_
</div>_x000D_
<div class="col-xs-6 blue">_x000D_
<h2 class="section-heading text-center">Title</h2>_x000D_
<p class="text-faded text-center">.col-md-6</p>_x000D_
</div>_x000D_
</div>_x000D_
</div>_x000D_
</section>
_x000D_
I have the same issue , and I have resolved it using the steps mentioned above.but no when I have this issue again and i try the following,
RC(right click on web project) --> properties --> Deployment Assembly --> Add --> Java Build Path Entries --> Next -->
after clicking on next its only a blank window with the options Next and Fnish disabled.What can I do now?
return
returns a value. It doesn't matter what name you gave to that value. Returning it just "passes it out" so that something else can use it. If you want to use it, you have to grab it from outside:
lst = defineAList()
useTheList(lst)
Returning list
from inside defineAList
doesn't mean "make it so the whole rest of the program can use that variable". It means "pass this variable out and give the rest of the program one chance to grab it and use it". You need to assign that value to something outside the function in order to make use of it. Also, because of this, there is no need to define your list ahead of time with list = []
. Inside defineAList
, you create a new list and return it; this list has no relationship to the one you defined with list = []
at the beginning.
Incidentally, I changed your variable name from list
to lst
. It's not a good idea to use list
as a variable name because that is already the name of a built-in Python type. If you make your own variable called list
, you won't be able to access the builtin one anymore.
The create_function()
function is deprecated as of php v7.2.0. You can use the array_map()
as given,
function getObjectID($obj){
return $obj->id;
}
$IDs = array_map('getObjectID' , $array_of_object);
Alternatively, you can use array_column()
function which returns the values from a single column of the input, identified by the column_key. Optionally, an index_key may be provided to index the values in the returned array by the values from the index_key column of the input array. You can use the array_column as given,
$IDs = array_column($array_of_object , 'id');
Can you try the following?
psexec \\server cmd /c "echo . | powershell script.ps1"
Using Moment library, see their website -> https://momentjs.com/timezone/docs/#/using-timezones/converting-to-zone/
i notice they also user their own library in their website, so you can have a try using the browser console before installing it
moment().tz(String);
The moment#tz mutator will change the time zone and update the offset.
moment("2013-11-18").tz("America/Toronto").format('Z'); // -05:00
moment("2013-11-18").tz("Europe/Berlin").format('Z'); // +01:00
This information is used consistently in other operations, like calculating the start of the day.
var m = moment.tz("2013-11-18 11:55", "America/Toronto");
m.format(); // 2013-11-18T11:55:00-05:00
m.startOf("day").format(); // 2013-11-18T00:00:00-05:00
m.tz("Europe/Berlin").format(); // 2013-11-18T06:00:00+01:00
m.startOf("day").format(); // 2013-11-18T00:00:00+01:00
Without an argument, moment#tz returns:
the time zone name assigned to the moment instance or
undefined if a time zone has not been set.
var m = moment.tz("2013-11-18 11:55", "America/Toronto");
m.tz(); // America/Toronto
var m = moment.tz("2013-11-18 11:55");
m.tz() === undefined; // true
Eclipse 3.5 has an option to package required libraries into the runnable jar. File -> Export... Choose runnable jar and click next. The runnable jar export window has a radio button where you can choose to package the required libraries into the jar.
try this
<iframe name="myIframe" id="myIframe" width="400px" height="400px" runat="server"></iframe>
Expose this iframe in the master page's codebehind:
public HtmlControl iframe
{
get
{
return this.myIframe;
}
}
Add the MasterType directive for the content page to strongly typed Master Page.
<%@ Page Language="C#" MasterPageFile="~/MasterPage.master" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits=_Default" Title="Untitled Page" %>
<%@ MasterType VirtualPath="~/MasterPage.master" %>
In code behind
protected void Page_Load(object sender, EventArgs e)
{
this.Master.iframe.Attributes.Add("src", "some.aspx");
}
I also meet this problem in svn diff operation, it was caused by incorrect file path, you should add './'
to indicate the current file directory.
It appears to be a known issue.
http://dev.mysql.com/doc/refman/5.1/en/unnamed-views.html
http://bugs.mysql.com/bug.php?id=16757
Many IN queries can be re-written as (left outer) joins and an IS (NOT) NULL of some sort. for example
SELECT * FROM FOO WHERE ID IN (SELECT ID FROM FOO2)
can be re-written as
SELECT FOO.* FROM FOO JOIN FOO2 ON FOO.ID=FOO2.ID
or
SELECT * FROM FOO WHERE ID NOT IN (SELECT ID FROM FOO2)
can be
SELECT FOO.* FROM FOO
LEFT OUTER JOIN FOO2
ON FOO.ID=FOO2.ID WHERE FOO.ID IS NULL
grep -r "yourstring" *
Will find "yourstring" in any files and folders Now if you want to look for two different strings at the same time you can always use option E and add words for the search. example after the break
grep -rE "yourstring|yourotherstring|$" *
will search for list locations where yourstring
or yourotherstring
matchesSomething like this should work:
UPDATE
table_Name
SET
column_A = CASE WHEN @flag = '1' THEN column_A + @new_value ELSE column_A END,
column_B = CASE WHEN @flag = '0' THEN column_B + @new_value ELSE column_B END
WHERE
ID = @ID
No, it's not. instanceof
would return false
if its first operand is null
.
Use the CSS property border on the <td>
s following the <tr>
s you do not want to have the border.
In my example I made a class noBorder
that I gave to one <tr>
. Then I use a simple selector tr.noBorder td
to make the border go away for all the <td>
s that are inside of <tr>
s with the noBorder
class by assigning border: 0
.
Note that you do not need to provide the unit (i.e. px
) if you set something to 0
as it does not matter anyway. Zero is just zero.
table, tr, td {_x000D_
border: 3px solid red;_x000D_
}_x000D_
tr.noBorder td {_x000D_
border: 0;_x000D_
}
_x000D_
<table>_x000D_
<tr>_x000D_
<td>A1</td>_x000D_
<td>B1</td>_x000D_
<td>C1</td>_x000D_
</tr>_x000D_
<tr class="noBorder">_x000D_
<td>A2</td>_x000D_
<td>B2</td>_x000D_
<td>C2</td>_x000D_
</tr>_x000D_
<tr>_x000D_
<td>A3</td>_x000D_
<td>A3</td>_x000D_
<td>A3</td>_x000D_
</tr>_x000D_
</table>
_x000D_
Here's the output as an image:
It's as easy as:
delete object.keyname;
or
delete object["keyname"];
This can happen when using framesets. In one frame, my variables and methods were defined. In another, they were not. It was especially confusing when using the debugger and seeing my variable defined, then undefined at a breakpoint inside a frame.
Just for fun, a shell (almost any shell) implementation:
#!/bin/sh
gcd() { # Calculate $1 % $2 until $2 becomes zero.
until [ "$2" -eq 0 ]; do set -- "$2" "$(($1%$2))"; done
echo "$1"
}
lcm() { echo "$(( $1 / $(gcd "$1" "$2") * $2 ))"; }
while [ $# -gt 1 ]; do
t="$(lcm "$1" "$2")"
shift 2
set -- "$t" "$@"
done
echo "$1"
try it with:
$ ./script 2 3 4 5 6
to get
60
The biggest input and result should be less than (2^63)-1
or the shell math will wrap.
I have tested your example, and while Request.QueryString is not convertible to a string neither implicit nor explicit still the .ToString() method returns the correct result.
Further more when concatenating with a string using the "+" operator as in your example it will also return the correct result (because this behaves as if .ToString() was called).
As such there is nothing wrong with your code, and I would suggest that your issue was because of a typo in your code writing "Querystring" instead of "QueryString".
And this makes more sense with your error message since if the problem is that QueryString is a collection and not a string it would have to give another error message.
Complate Angular Way ( Set/Get value by Id ):
// In Html tag
<button (click) ="setValue()">Set Value</button>
<input type="text" #userNameId />
// In component .ts File
export class testUserClass {
@ViewChild('userNameId') userNameId: ElementRef;
ngAfterViewInit(){
console.log(this.userNameId.nativeElement.value );
}
setValue(){
this.userNameId.nativeElement.value = "Sample user Name";
}
}
If you are using Retrofit2 and okhttp3 then you need to know that Interceptor works by queue. So add loggingInterceptor at the end, after your other Interceptors:
HttpLoggingInterceptor loggingInterceptor = new HttpLoggingInterceptor();
if (BuildConfig.DEBUG)
loggingInterceptor.setLevel(HttpLoggingInterceptor.Level.HEADERS);
new OkHttpClient.Builder()
.connectTimeout(60, TimeUnit.SECONDS)
.readTimeout(60, TimeUnit.SECONDS)
.writeTimeout(60, TimeUnit.SECONDS)
.addInterceptor(new CatalogInterceptor(context))
.addInterceptor(new OAuthInterceptor(context))
.authenticator(new BearerTokenAuthenticator(context))
.addInterceptor(loggingInterceptor)//at the end
.build();
I recently had a similar problem. You can install node_modules
elsewhere and set the NODE_PATH
environment variable.
In the example below I installed node_modules
into /install
FROM node:0.12
RUN ["mkdir", "/install"]
ADD ["./package.json", "/install"]
WORKDIR /install
RUN npm install --verbose
ENV NODE_PATH=/install/node_modules
WORKDIR /worker
COPY . /worker/
redis:
image: redis
worker:
build: ./worker
command: npm start
ports:
- "9730:9730"
volumes:
- worker/:/worker/
links:
- redis
list_ = list(range(9)) print(list_[1::2])
I don't think .net is 'picky about deserializing arrays'. The first xml document is not well formed. There is no root element, although it looks like there is. The canonical xml document has a root and at least 1 element (if at all). In your example:
<Root> <-- well, the root
<Cars> <-- an element (not a root), it being an array
<Car> <-- an element, it being an array item
...
</Car>
</Cars>
</Root>
The listed answers won't work if the results of the AJAX form submit affects the HTML outside the scope of the modal before the modal finishes closing. In my case, the result was a grayed out (fade) screen where I could see the page update, but could not interact with any of the page elements.
My solution:
$(document).on("click", "#send-email-submit-button", function(e){
$('#send-new-email-modal').modal('hide')
});
$(document).on("submit", "#send-email-form", function(e){
e.preventDefault();
var querystring = $(this).serialize();
$.ajax({
type: "POST",
url: "sendEmailMessage",
data : querystring,
success : function(response) {
$('#send-new-email-modal').on('hidden.bs.modal', function () {
$('#contacts-render-target').html(response);
}
});
return false;
});
Note: My modal form was inside a parent div that was already rendered via AJAX, thus the need to anchor the event listener to document.
There is a Hidden
helper alongside HiddenFor
which lets you set the value.
@Html.Hidden("RequiredProperty", "default")
EDIT Based on the edit you've made to the question, you could do this, but I believe you're moving into territory where it will be cheaper and more effective, in the long run, to fight for making the code change. As has been said, even by yourself, the controller or view model should be setting the default.
This code:
<ul>
@{
var stacks = new System.Diagnostics.StackTrace().GetFrames();
foreach (var frame in stacks)
{
<li>@frame.GetMethod().Name - @frame.GetMethod().DeclaringType</li>
}
}
</ul>
Will give output like this:
Execute - ASP._Page_Views_ViewDirectoryX__SubView_cshtml
ExecutePageHierarchy - System.Web.WebPages.WebPageBase
ExecutePageHierarchy - System.Web.Mvc.WebViewPage
ExecutePageHierarchy - System.Web.WebPages.WebPageBase
RenderView - System.Web.Mvc.RazorView
Render - System.Web.Mvc.BuildManagerCompiledView
RenderPartialInternal - System.Web.Mvc.HtmlHelper
RenderPartial - System.Web.Mvc.Html.RenderPartialExtensions
Execute - ASP._Page_Views_ViewDirectoryY__MainView_cshtml
So assuming the MVC framework will always go through the same stack, you can grab var frame = stacks[8];
and use the declaring type to determine who your parent view is, and then use that determination to set (or not) the default value. You could also walk the stack instead of directly grabbing [8]
which would be safer but even less efficient.
I am going to answer my own question.
I added the following lines of code to my Makefile and it fixed the "clock skew" problem:
clean:
find . -type f | xargs touch
rm -rf $(OBJS)
You can use the ScriptEngine
class and evaluate it as a Javascript string.
ScriptEngineManager manager = new ScriptEngineManager();
ScriptEngine engine = manager.getEngineByName("js");
Object result = engine.eval("4*5");
There may be a better way, but this one works.
The answer you're looking for in 2020 and beyond:
setColorFilter(color, mode)
is deprecated since API 29 (as discussed here)button.setBackgroundColor(color)
messes with the button styleNow the proper way to set a buttons color is using BlendModeColorFilter()
(see documentation).
Usage:
btn.background.colorFilter = BlendModeColorFilter(color, BlendMode.MULTIPLY)
If you work with older APIs too:
fun setButtonColor(btn: Button, color: Int) {
if (Build.VERSION.SDK_INT >= 29)
btn.background.colorFilter = BlendModeColorFilter(color, BlendMode.MULTIPLY)
else
btn.background.setColorFilter(color, PorterDuff.Mode.MULTIPLY)
}
Please vote to help others finding this answer - it took me quite a while figuring this out ^^
Same origin policy has nothing to do with sending request to another url (different protocol or domain or port).
It is all about restricting access to (reading) response data from another url. So JavaScript code within a page can post to arbitrary domain or submit forms within that page to anywhere (unless the form is in an iframe with different url).
But what makes these POST requests inefficient is that these requests lack antiforgery tokens, so are ignored by the other url. Moreover, if the JavaScript tries to get that security tokens, by sending AJAX request to the victim url, it is prevented to access that data by Same Origin Policy.
A good example: here
And a good documentation from Mozilla: here
-O
is the option to specify the path of the file you want to download to:
wget <uri> -O /path/to/file.ext
-P
is prefix where it will download the file in the directory:
wget <uri> -P /path/to/folder
TL;DR; If you're still having trouble after restarting apache or nginx, also try restarting the php-fpm
service.
The answers here don't always satisfy the requirement to force a reload of the php.ini file. On numerous occasions I've taken these steps to be rewarded with no update, only to find the solution I need after also restarting the php-fpm service. So if restarting apache or nginx doesn't trigger a php.ini update although you know the files are updated, try restarting php-fpm as well.
To restart the service:
Note: prepend sudo if not root
Using SysV Init scripts directly:
/etc/init.d/php-fpm restart # typical
/etc/init.d/php5-fpm restart # debian-style
/etc/init.d/php7.0-fpm restart # debian-style PHP 7
Using service wrapper script
service php-fpm restart # typical
service php5-fpm restart # debian-style
service php7.0-fpm restart. # debian-style PHP 7
Using Upstart (e.g. ubuntu):
restart php7.0-fpm # typical (ubuntu is debian-based) PHP 7
restart php5-fpm # typical (ubuntu is debian-based)
restart php-fpm # uncommon
Using systemd (newer servers):
systemctl restart php-fpm.service # typical
systemctl restart php5-fpm.service # uncommon
systemctl restart php7.0-fpm.service # uncommon PHP 7
Or whatever the equivalent is on your system.
The above commands taken directly from this server fault answer
Most probably it has to do with caching on the device. Catching the exception and ignoring is not nice but my problem was fixed and it seems to work.
My issue on OSX it was gradle version. Gradle was ignoring my Android.mk. So, in order to override this option, and use my make instead, I have entered this line:
sourceSets.main.jni.srcDirs = []
inside of the android
tag in build.gradle
.
I have wasted lot of time on this!
While I would be tempted to blame my issues - I'm getting the same error with my query, which is much, much bigger and involves a lot of loops - on the network, I think this is not the case.
Unfortunately it's not that simple. Query runs for 3+ hours before getting that error and apparently it crashes at the same time if it's just a query in SSMS and a job on SQL Server (did not look into details of that yet, so not sure if it's the same error; definitely same spot, though).
So just in case someone comes here with similar problem, this thread: https://www.sqlservercentral.com/Forums/569962/The-semaphore-timeout-period-has-expired
suggest that it may equally well be a hardware issue or actual timeout.
My loops aren't even (they depend on sales level in given month) in terms of time required for each, so good month takes about 20 mins to calculate (query looks at 4 years).
That way it's entirely possible I need to optimise my query. I would even say it's likely, as some changes I did included new tables, which are heaps... So another round of indexing my data before tearing into VM config and hardware tests.
Being aware that this is old question: I'm on SQL Server 2012 SE, SSMS is 2018 Beta and VM the SQL Server runs on has exclusive use of 132GB of RAM (30% total), 8 cores, and 2TB of SSD SAN.
That's probably a requireJS module definition
Check here for more details
RequireJS is a JavaScript file and module loader. It is optimized for in-browser use, but it can be used in other JavaScript environments, like Rhino and Node. Using a modular script loader like RequireJS will improve the speed and quality of your code.
or programmaticaly
String s = String.class.getName();
s = s.substring(s.lastIndexOf('.') + 1);
Add HTML inside div using JavaScript
Syntax:
element.innerHTML += "additional HTML code"
or
element.innerHTML = element.innerHTML + "additional HTML code"
Remove HTML inside div using JavaScript
elementChild.remove();
In PHP5 this idiom is deprecated
$obj_md =& new MDB2();
You sure you've not missed an ampersand in your sample code? That would generate the warning you state, but it is not required and can be removed.
To see why this idiom was used in PHP4, see this manual page (note that PHP4 is long dead and this link is to an archived version of the relevant page)