If you start out with:
let array = [
{name: "malcom", dogType: "four-legged"},
{name: "peabody", dogType: "three-legged"},
{name: "pablo", dogType: "two-legged"}
];
And you want a set of, say, names, you would do:
let namesSet = new Set(array.map(item => item.name));
Had the same problem, while differently from other answers in my case I use ASP.NET to develop the WebAPI server.
I already had Corps allowed and it worked for GET requests. To make POST requests work I needed to add 'AllowAnyHeader()' and 'AllowAnyMethod()' options to the list of Corp options.
Here are essential parts of related functions in Start class look like:
ConfigureServices method:
services.AddCors(options =>
{
options.AddPolicy(name: MyAllowSpecificOrigins,
builder =>
{
builder
.WithOrigins("http://localhost:4200")
.AllowAnyHeader()
.AllowAnyMethod()
//.AllowCredentials()
;
});
});
Configure method:
app.UseCors(MyAllowSpecificOrigins);
Found this from:
If choosing between OAuth versions, go with OAuth 2.0.
OAuth bearer tokens should only be used with a secure transport.
OAuth bearer tokens are only as secure or insecure as the transport that encrypts the conversation. HTTPS takes care of protecting against replay attacks, so it isn't necessary for the bearer token to also guard against replay.
While it is true that if someone intercepts your bearer token they can impersonate you when calling the API, there are plenty of ways to mitigate that risk. If you give your tokens a long expiration period and expect your clients to store the tokens locally, you have a greater risk of tokens being intercepted and misused than if you give your tokens a short expiration, require clients to acquire new tokens for every session, and advise clients not to persist tokens.
If you need to secure payloads that pass through multiple participants, then you need something more than HTTPS/SSL, since HTTPS/SSL only encrypts one link of the graph. This is not a fault of OAuth.
Bearer tokens are easy to for clients to obtain, easy for clients to use for API calls and are widely used (with HTTPS) to secure public facing APIs from Google, Facebook, and many other services.
if you want to stay DRY, use an include.
{% if foo %}
{% with a as b %}
{% include "snipet.html" %}
{% endwith %}
{% else %}
{% with bar as b %}
{% include "snipet.html" %}
{% endwith %}
{% endif %}
or, even better would be to write a method on the model that encapsulates the core logic:
def Patient(models.Model):
....
def get_legally_responsible_party(self):
if self.age > 18:
return self
else:
return self.parent
Then in the template:
{% with patient.get_legally_responsible_party as p %}
Do html stuff
{% endwith %}
Then in the future, if the logic for who is legally responsible changes you have a single place to change the logic -- far more DRY than having to change if statements in a dozen templates.
Try Access DataTable easiest way which can help you for getting perfect idea for accessing DataTable, DataSet using Linq...
Consider following example, suppose we have DataTable like below.
DataTable ObjDt = new DataTable("List");
ObjDt.Columns.Add("WorkName", typeof(string));
ObjDt.Columns.Add("Price", typeof(decimal));
ObjDt.Columns.Add("Area", typeof(string));
ObjDt.Columns.Add("Quantity",typeof(int));
ObjDt.Columns.Add("Breath",typeof(decimal));
ObjDt.Columns.Add("Length",typeof(decimal));
Here above is the code for DatTable, here we assume that there are some data are available in this DataTable, and we have to bind Grid view of particular by processing some data as shown below.
Area | Quantity | Breath | Length | Price = Quantity * breath *Length
Than we have to fire following query which will give us exact result as we want.
var data = ObjDt.AsEnumerable().Select
(r => new
{
Area = r.Field<string>("Area"),
Que = r.Field<int>("Quantity"),
Breath = r.Field<decimal>("Breath"),
Length = r.Field<decimal>("Length"),
totLen = r.Field<int>("Quantity") * (r.Field<decimal>("Breath") * r.Field<decimal>("Length"))
}).ToList();
We just have to assign this data variable as Data Source.
By using this simple Linq query we can get all our accepts, and also we can perform all other LINQ queries with this…
I faced the same issue while running git clone
command from windows command line. But the command runs successfully from Git Bash.
In C++, the size of int
isn't specified explicitly. It just tells you that it must be at least the size of short int
, which must be at least as large as signed char
. The size of char
in bits isn't specified explicitly either, although sizeof(char) is defined to be 1. If you want a 64 bit int, C++11 specifies long long
to be at least 64 bits.
Describe Formatted/Extended will show the data definition of the table in hive
hive> describe Formatted dbname.tablename;
constexpr indicates a value that's constant and known during compilation.
const indicates a value that's only constant; it's not compulsory to know during compilation.
int sz;
constexpr auto arraySize1 = sz; // error! sz's value unknown at compilation
std::array<int, sz> data1; // error! same problem
constexpr auto arraySize2 = 10; // fine, 10 is a compile-time constant
std::array<int, arraySize2> data2; // fine, arraySize2 is constexpr
Note that const doesn’t offer the same guarantee as constexpr, because const objects need not be initialized with values known during compilation.
int sz;
const auto arraySize = sz; // fine, arraySize is const copy of sz
std::array<int, arraySize> data; // error! arraySize's value unknown at compilation
All constexpr objects are const, but not all const objects are constexpr.
If you want compilers to guarantee that a variable has a value that can be used in contexts requiring compile-time constants, the tool to reach for is constexpr, not const.
You can set the spinners background color in xml like this:
android:background="YOUR_HEX_COLOR_CODE"
and if you use the drop down menu with you spinner you can set its background color like this:
android:popupBackground="YOUR_HEX_COLOR_CODE"
You can try
echo implode(', ', (array)$ret);
As far as the C and C++ languages are concerned there is no special meaning to an underscore in the name (beginning, middle or end). It's just a valid variable name character. The "conventions" come from coding practices within a coding community.
As already indicated by various examples above, _ in the beginning may mean private or protected members of a class in C++.
Let me just give some history that may be fun trivia. In UNIX if you have a core C library function and a kernel back-end where you want to expose the kernel function to user space as well the _ is stuck in front of the function stub that calls the kernel function directly without doing anything else. The most famous and familiar example of this is exit() vs _exit() under BSD and SysV type kernels: There, exit() does user-space stuff before calling the kernel's exit service, whereas _exit just maps to the kernel's exit service.
So _ was used for "local" stuff in this case local being machine-local. Typically _functions() were not portable. In that you should not expect same behaviour across various platforms.
Now as for _ in variable names, such as
int _foo;
Well psychologically, an _ is an odd thing to have to type in the beginning. So if you want to create a variable name that would have a lesser chance of a clash with something else, ESPECIALLY when dealing with pre-processor substitutions you want consider uses of _.
My basic advice would be to always follow the convention of your coding community, so that you can collaborate more effectively.
We can use an optional merger function also in case of same key collision. For example, If two or more persons have the same getLast() value, we can specify how to merge the values. If we not do this, we could get IllegalStateException. Here is the example to achieve this...
Map<String, Person> map =
roster
.stream()
.collect(
Collectors.toMap(p -> p.getLast(),
p -> p,
(person1, person2) -> person1+";"+person2)
);
In a relational database system, a one-to-many
table relationship looks as follows:
Note that the relationship is based on the Foreign Key column (e.g., post_id
) in the child table.
So, there is a single source of truth when it comes to managing a one-to-many
table relationship.
Now, if you take a bidirectional entity relationship that maps on the one-to-many
table relationship we saw previously:
If you take a look at the diagram above, you can see that there are two ways to manage this relationship.
In the Post
entity, you have the comments
collection:
@OneToMany(
mappedBy = "post",
cascade = CascadeType.ALL,
orphanRemoval = true
)
private List<PostComment> comments = new ArrayList<>();
And, in the PostComment
, the post
association is mapped as follows:
@ManyToOne(
fetch = FetchType.LAZY
)
@JoinColumn(name = "post_id")
private Post post;
Because there are two ways to represent the Foreign Key column, you must define which is the source of truth when it comes to translating the association state change into its equivalent Foreign Key column value modification.
The mappedBy
attribute tells that the @ManyToOne
side is in charge of managing the Foreign Key column, and the collection is used only to fetch the child entities and to cascade parent entity state changes to children (e.g., removing the parent should also remove the child entities).
Now, even if you defined the mappedBy
attribute and the child-side @ManyToOne
association manages the Foreign Key column, you still need to synchronize both sides of the bidirectional association.
The best way to do that is to add these two utility methods:
public void addComment(PostComment comment) {
comments.add(comment);
comment.setPost(this);
}
public void removeComment(PostComment comment) {
comments.remove(comment);
comment.setPost(null);
}
The addComment
and removeComment
methods ensure that both sides are synchronized. So, if we add a child entity, the child entity needs to point to the parent and the parent entity should have the child contained in the child collection.
For a nice step-by-step x86 Mac-specific introduction see http://peter.michaux.ca/articles/assembly-hello-world-for-os-x. The other links I’ve tried have some non-Mac pitfalls.
Here is the method using ex
editor (part of Vim):
Join all lines and print to the standard output:
$ ex +%j +%p -scq! file
Join all lines in-place (in the file):
$ ex +%j -scwq file
Note: This will concatenate all lines inside the file it-self!
I could not use:
ansible_ssh_common_args='-o StrictHostKeyChecking=no'
in inventory file. It seems ansible does not consider this option in my case (ansible 2.0.1.0 from pip in ubuntu 14.04)
I decided to use:
server ansible_host=192.168.1.1 ansible_ssh_common_args= '-o UserKnownHostsFile=/dev/null'
It helped me.
Also you could set this variable in group instead for each host:
[servers_group:vars]
ansible_ssh_common_args='-o UserKnownHostsFile=/dev/null'
var id = "id" + Math.random().toString(16).slice(2)
onclick="window.open('your_html', '_blank')"
There is no unmarshal(String)
method. You should use a Reader
:
Person person = (Person) unmarshaller.unmarshal(new StringReader("xml string"));
But usually you are getting that string from somewhere, for example a file. If that's the case, better pass the FileReader
itself.
You could create a db wrapper then require it. node's require returns the same instance of a module every time, so you can perform your connection and return a handler. From the Node.js docs:
every call to require('foo') will get exactly the same object returned, if it would resolve to the same file.
You could create db.js
:
var mysql = require('mysql');
var connection = mysql.createConnection({
host : '127.0.0.1',
user : 'root',
password : '',
database : 'chat'
});
connection.connect(function(err) {
if (err) throw err;
});
module.exports = connection;
Then in your app.js
, you would simply require it.
var express = require('express');
var app = express();
var db = require('./db');
app.get('/save',function(req,res){
var post = {from:'me', to:'you', msg:'hi'};
db.query('INSERT INTO messages SET ?', post, function(err, result) {
if (err) throw err;
});
});
server.listen(3000);
This approach allows you to abstract any connection details, wrap anything else you want to expose and require db
throughout your application while maintaining one connection to your db thanks to how node require works :)
<sup>
and <sub>
tags work and are your only good solution for arbitrary text. Other solutions include:
Unicode
If the superscript (or subscript) you need is of a mathematical nature, Unicode may well have you covered.
I've compiled a list of all the Unicode super and subscript characters I could identify in this gist. Some of the more common/useful ones are:
°
SUPERSCRIPT ZERO (U+2070)¹
SUPERSCRIPT ONE (U+00B9)²
SUPERSCRIPT TWO (U+00B2)³
SUPERSCRIPT THREE (U+00B3)n
SUPERSCRIPT LATIN SMALL LETTER N (U+207F)People also often reach for <sup>
and <sub>
tags in an attempt to render specific symbols like these:
™
TRADE MARK SIGN (U+2122)®
REGISTERED SIGN (U+00AE)?
SERVICE MARK (U+2120)Assuming your editor supports Unicode, you can copy and paste the characters above directly into your document.
Alternatively, you could use the hex values above in an HTML character escape. Eg, ²
instead of ²
. This works with GitHub (and should work anywhere else your Markdown is rendered to HTML) but is less readable when presented as raw text/Markdown.
Images
If your requirements are especially unusual, you can always just inline an image. The GitHub supported syntax is:
![Alt text goes here, if you'd like](path/to/image.png)
You can use a full path (eg. starting with https://
or http://
) but it's often easier to use a relative path, which will load the image from the repo, relative to the Markdown document.
If you happen to know LaTeX (or want to learn it) you could do just about any text manipulation imaginable and render it to an image. Sites like Quicklatex make this quite easy.
to show the treated text in console
cat filename | sed '/text to remove/d'
to save treated text into a file
cat filename | sed '/text to remove/d' > newfile
to append treated text info an existing file
cat filename | sed '/text to remove/d' >> newfile
to treat already treated text, in this case remove more lines of what has been removed
cat filename | sed '/text to remove/d' | sed '/remove this too/d' | more
the | more
will show text in chunks of one page at a time.
You can have a responsive canvas in 3 short and simple steps:
Remove the width
and height
attributes from your <canvas>
.
<canvas id="responsive-canvas"></canvas>
Using CSS, set the width
of your canvas to 100%
.
#responsive-canvas {
width: 100%;
}
Using JavaScript, set the height to some ratio of the width.
var canvas = document.getElementById('responsive-canvas');
var heightRatio = 1.5;
canvas.height = canvas.width * heightRatio;
The current alternative for pluck()
is value()
.
The following query returns the median from a list of values in one column. It cannot be used as or along with an aggregate function, but you can still use it as a sub-query with a WHERE clause in the inner select.
SQL Server 2005+:
SELECT TOP 1 value from
(
SELECT TOP 50 PERCENT value
FROM table_name
ORDER BY value
)for_median
ORDER BY value DESC
Turns out that the post (or rather the whole table) was locked by the very same connection that I tried to update the post with.
I had a opened record set of the post that was created by:
Set RecSet = Conn.Execute()
This type of recordset is supposed to be read-only and when I was using MS Access as database it did not lock anything. But apparently this type of record set did lock something on MS SQL Server 2012 because when I added these lines of code before executing the UPDATE SQL statement...
RecSet.Close
Set RecSet = Nothing
...everything worked just fine.
So bottom line is to be careful with opened record sets - even if they are read-only they could lock your table from updates.
the font size to em mapping is only accurate if there is no font-size defined and changes when your container is set to different sizes.
The following works best for me but it does not account for size=7 and anything above 7 only renders as 7.
font size=1 = font-size:x-small
font size=2 = font-size:small
font size=3 = font-size:medium
font size=4 = font-size:large
font size=5 = font-size:x-large
font size=6 = font-size:xx-large
Create a seperate xml file in res/drawable folder
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
<size android:height="1dp" />
<solid android:color="@android:color/black" />
</shape>
Connect that xml file (your_file) at the main activity, like this:
DividerItemDecoration divider = new DividerItemDecoration(
recyclerView.getContext(),
DividerItemDecoration.VERTICAL
);
divider.setDrawable(ContextCompat.getDrawable(getBaseContext(), R.drawable.your_file));
recyclerView.addItemDecoration(divider);
You can escape (this is how this principle is called) the double quotes by prefixing them with another double quote. You can put them in a string as follows:
Dim MyVar as string = "some text ""hello"" "
This will give the MyVar
variable a value of some text "hello"
.
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
If you are using Carbon you can do the following. You could also format this date to set an Expire
HTTP Header.
Carbon::parse('tomorrow midnight')->format(Carbon::RFC7231_FORMAT)
I'll show you with a pic!
Add a new File
Go to Project/Build Setting/APPl LLVM 6.0-Language
Check out the MyToolkit library:
var request = new HttpPostRequest("http://www.server.com");
request.Data.Add("name", "value"); // POST data
request.Files.Add(new HttpPostFile("name", "file.jpg", "path/to/file.jpg"));
await Http.PostAsync(request, OnRequestFinished);
getRandom (min, max) {
return Math.floor(Math.random() * (max - min)) + min
}
getNRandom (min, max, n) {
const numbers = []
if (min > max) {
return new Error('Max is gt min')
}
if (min === max) {
return [min]
}
if ((max - min) >= n) {
while (numbers.length < n) {
let rand = this.getRandom(min, max + 1)
if (numbers.indexOf(rand) === -1) {
numbers.push(rand)
}
}
}
if ((max - min) < n) {
for (let i = min; i <= max; i++) {
numbers.push(i)
}
}
return numbers
}
use:
#ifdef __linux__
//linux code goes here
#elif _WIN32
// windows code goes here
#else
#endif
Icesoap, which I found yesterday, looks promising. It worked on a basic test, but it lacks more examples.
$("selector").css("border-bottom-color", "#fff");
#mydiv
, then $("#mydiv")
.css()
method provided by jQuery to modify specified object's css property values. I was pretty surprised when I saw this question that no one used numpy even when numpy is way faster than python loops. By implementing @agf's solution with numpy and it turned out at average 8x faster. I belive that if you implemented some of the other solutions in numpy you could get amazing times.
Here is my function:
import numpy as np
def b(n):
r = np.arange(1, int(n ** 0.5) + 1)
x = r[np.mod(n, r) == 0]
return set(np.concatenate((x, n / x), axis=None))
Notice that the numbers of the x-axis are not the input to the functions. The input to the functions is 2 to the the number on the x-axis minus 1. So where ten is the input would be 2**10-1 = 1023
Java didn't provide multiple inheritance.
When you say A extends B then it means that A extends B and B extends Object.
It doesn't mean A extends B, Object.
class A extends Object
class B extends A
class ViewController: UIViewController {
@IBAction func showAlertButtonTapped(_ sender: UIButton) {
// create the alert
let alert = UIAlertController(title: "My Title", message: "This is my message.", preferredStyle: UIAlertController.Style.alert)
// add an action (button)
alert.addAction(UIAlertAction(title: "OK", style: UIAlertAction.Style.default, handler: nil))
// show the alert
self.present(alert, animated: true, completion: nil)
}
}
class ViewController: UIViewController {
@IBAction func showAlertButtonTapped(_ sender: UIButton) {
// create the alert
let alert = UIAlertController(title: "UIAlertController", message: "Would you like to continue learning how to use iOS alerts?", preferredStyle: UIAlertController.Style.alert)
// add the actions (buttons)
alert.addAction(UIAlertAction(title: "Continue", style: UIAlertAction.Style.default, handler: nil))
alert.addAction(UIAlertAction(title: "Cancel", style: UIAlertAction.Style.cancel, handler: nil))
// show the alert
self.present(alert, animated: true, completion: nil)
}
}
class ViewController: UIViewController {
@IBAction func showAlertButtonTapped(_ sender: UIButton) {
// create the alert
let alert = UIAlertController(title: "Notice", message: "Lauching this missile will destroy the entire universe. Is this what you intended to do?", preferredStyle: UIAlertController.Style.alert)
// add the actions (buttons)
alert.addAction(UIAlertAction(title: "Remind Me Tomorrow", style: UIAlertAction.Style.default, handler: nil))
alert.addAction(UIAlertAction(title: "Cancel", style: UIAlertAction.Style.cancel, handler: nil))
alert.addAction(UIAlertAction(title: "Launch the Missile", style: UIAlertAction.Style.destructive, handler: nil))
// show the alert
self.present(alert, animated: true, completion: nil)
}
}
The handler
was nil
in the above examples. You can replace nil
with a closure to do something when the user taps a button. For example:
alert.addAction(UIAlertAction(title: "Launch the Missile", style: UIAlertAction.Style.destructive, handler: { action in
// do something like...
self.launchMissile()
}))
UIAlertAction.Style
types. They could all be .default
.Remember that .text()
strips out markup, thus I don't believe you're going to find
in a non-markup result.
Made in to an answer....
var p = $('<p>').html(' ');
if (p.text() == String.fromCharCode(160) && p.text() == '\xA0')
alert('Character 160');
Shows an alert, as the ASCII equivalent of the markup is returned instead.
Well, you just fire the desired click event:
$(".first").click(function(){
$(".second").click();
return false;
});
Great answers. Adding one that loads the color from an Android resources xml but still sets it programmatically:
textView.setTextColor(getResources().getColor(R.color.some_color));
Please note that from API 23, getResources().getColor()
is deprecated. Use instead:
textView.setTextColor(ContextCompat.getColor(context, R.color.some_color));
where the required color is defined in an xml as:
<resources>
<color name="some_color">#bdbdbd</color>
</resources>
Update:
This method was deprecated in API level 23. Use getColor(int, Theme) instead.
Check this.
Running adb commands on all connected devices
Create a bash (adb+)
adb devices | while read line
do
if [ ! "$line" = "" ] && [ `echo $line | awk '{print $2}'` = "device" ]
then
device=`echo $line | awk '{print $1}'`
echo "$device $@ ..."
adb -s $device $@
fi
done use it with
adb+ //+ command
Adding to @Greg Hewgill answer: if you want to be able to match both date-time and only date, you can make the "time" part of the regex optional:
(\d{4})-(\d{2})-(\d{2})( (\d{2}):(\d{2}):(\d{2}))?
this way you will match both 2008-09-01 12:35:42
and 2008-09-01
For a list of elements
List<string> lstTest = new List<string>();
lstTest.Add("test1");
lstTest.Add("test2");
lstTest.Add("test3");
lstTest.Add("test4");
lstTest.Add("test5");
lstTest.Add("test6");
If you want to copy all the elements
List<string> lstNew = new List<string>();
lstNew.AddRange(lstTest);
If you want to copy the first 3 elements
List<string> lstNew = lstTest.GetRange(0, 3);
Re: textFile.getch()
, did you make that up, or do you have a reference that says it should work? If it's the latter, get rid of it. If it's the former, don't do that. Get a good reference.
char ch;
textFile.unsetf(ios_base::skipws);
textFile >> ch;
double[] array = new double[1048576];
...
By default order is ascending
To reverse the order
Arrays.sort(array,Collections.reverseOrder());
I've been to this post about 10 times now and I just wanted to leave my two cents here. You can just unmount it conditionally.
if (renderMyComponent) {
<MyComponent props={...} />
}
All you have to do is remove it from the DOM in order to unmount it.
As long as renderMyComponent = true
, the component will render. If you set renderMyComponent = false
, it will unmount from the DOM.
Yes, that's usually happens after 1440s (24 minutes)
This query run for me ( for MySQL). mytable_backup must be present before this query run.
insert into mytable_backup select * from mytable
Using static defaultProps
is correct. You should also be using interfaces, not classes, for the props and state.
Update 2018/12/1: TypeScript has improved the type-checking related to defaultProps
over time. Read on for latest and greatest usage down to older usages and issues.
TypeScript specifically added support for defaultProps
to make type-checking work how you'd expect. Example:
interface PageProps {
foo: string;
bar: string;
}
export class PageComponent extends React.Component<PageProps, {}> {
public static defaultProps = {
foo: "default"
};
public render(): JSX.Element {
return (
<span>Hello, { this.props.foo.toUpperCase() }</span>
);
}
}
Which can be rendered and compile without passing a foo
attribute:
<PageComponent bar={ "hello" } />
Note that:
foo
is not marked optional (ie foo?: string
) even though it's not required as a JSX attribute. Marking as optional would mean that it could be undefined
, but in fact it never will be undefined
because defaultProps
provides a default value. Think of it similar to how you can mark a function parameter optional, or with a default value, but not both, yet both mean the call doesn't need to specify a value. TypeScript 3.0+ treats defaultProps
in a similar way, which is really cool for React users!defaultProps
has no explicit type annotation. Its type is inferred and used by the compiler to determine which JSX attributes are required. You could use defaultProps: Pick<PageProps, "foo">
to ensure defaultProps
matches a sub-set of PageProps
. More on this caveat is explained here.@types/react
version 16.4.11
to work properly.Before TypeScript 3.0 implemented compiler support for defaultProps
you could still make use of it, and it worked 100% with React at runtime, but since TypeScript only considered props when checking for JSX attributes you'd have to mark props that have defaults as optional with ?
. Example:
interface PageProps {
foo?: string;
bar: number;
}
export class PageComponent extends React.Component<PageProps, {}> {
public static defaultProps: Partial<PageProps> = {
foo: "default"
};
public render(): JSX.Element {
return (
<span>Hello, world</span>
);
}
}
Note that:
defaultProps
with Partial<>
so that it type-checks against your props, but you don't have to supply every required property with a default value, which makes no sense since required properties should never need a default.strictNullChecks
the value of this.props.foo
will be possibly undefined
and require a non-null assertion (ie this.props.foo!
) or type-guard (ie if (this.props.foo) ...
) to remove undefined
. This is annoying since the default prop value means it actually will never be undefined, but TS didn't understand this flow. That's one of the main reasons TS 3.0 added explicit support for defaultProps
.This works the same but you don't have Partial
types, so just omit Partial<>
and either supply default values for all required props (even though those defaults will never be used) or omit the explicit type annotation completely.
You can use defaultProps
on function components as well, but you have to type your function to the FunctionComponent
(StatelessComponent
in @types/react
before version 16.7.2
) interface so that TypeScript knows about defaultProps
on the function:
interface PageProps {
foo?: string;
bar: number;
}
const PageComponent: FunctionComponent<PageProps> = (props) => {
return (
<span>Hello, {props.foo}, {props.bar}</span>
);
};
PageComponent.defaultProps = {
foo: "default"
};
Note that you don't have to use Partial<PageProps>
anywhere because FunctionComponent.defaultProps
is already specified as a partial in TS 2.1+.
Another nice alternative (this is what I use) is to destructure your props
parameters and assign default values directly:
const PageComponent: FunctionComponent<PageProps> = ({foo = "default", bar}) => {
return (
<span>Hello, {foo}, {bar}</span>
);
};
Then you don't need the defaultProps
at all! Be aware that if you do provide defaultProps
on a function component it will take precedence over default parameter values, because React will always explicitly pass the defaultProps
values (so the parameters are never undefined, thus the default parameter is never used.) So you'd use one or the other, not both.
UPDATED ANSWER:
Old answer, correct method nowadays is to use jQuery's .prop()
. IE, element.prop("selected", true)
OLD ANSWER:
Use this instead:
$("#routetype option[value='quietest']").attr("selected", "selected");
Fiddle'd: http://jsfiddle.net/x3UyB/4/
before PHP 5.3
session_register("name");
since PHP 5.3
$_SESSION['name'] = $name;
I use to store it in a file:
int pid = android.os.Process.myPid();
File outputFile = new File(Environment.getExternalStorageDirectory() + "/logs/logcat.txt");
try {
String command = "logcat | grep " + pid + " > " + outputFile.getAbsolutePath();
Process p = Runtime.getRuntime().exec("su");
OutputStream os = p.getOutputStream();
os.write((command + "\n").getBytes("ASCII"));
} catch (IOException e) {
e.printStackTrace();
}
in batch file abc.bat
cd c:\user\ben_dchost\documents\
executible.exe -flag1 -flag2 -flag3
I am assuming that your executible.exe
is present in c:\user\ben_dchost\documents\
I am also assuming that the parameters it takes are -flag1
-flag2
-flag3
Edited:
For the command you say you want to execute, do:
cd C:\Users\Ben\Desktop\BGInfo\
bginfo.exe dc_bginfo.bgi
pause
Hope this helps
To run a command as root, and pass it the password at the command prompt, you could do it as so:
import subprocess
from getpass import getpass
ls = "sudo -S ls -al".split()
cmd = subprocess.run(
ls, stdout=subprocess.PIPE, input=getpass("password: "), encoding="ascii",
)
print(cmd.stdout)
For your example, probably something like this:
import subprocess
from getpass import getpass
restart_apache = "sudo /usr/sbin/apache2ctl restart".split()
proc = subprocess.run(
restart_apache,
stdout=subprocess.PIPE,
input=getpass("password: "),
encoding="ascii",
)
A simple way using std::next_permutation
:
#include <iostream>
#include <algorithm>
#include <vector>
int main() {
int n, r;
std::cin >> n;
std::cin >> r;
std::vector<bool> v(n);
std::fill(v.end() - r, v.end(), true);
do {
for (int i = 0; i < n; ++i) {
if (v[i]) {
std::cout << (i + 1) << " ";
}
}
std::cout << "\n";
} while (std::next_permutation(v.begin(), v.end()));
return 0;
}
or a slight variation that outputs the results in an easier to follow order:
#include <iostream>
#include <algorithm>
#include <vector>
int main() {
int n, r;
std::cin >> n;
std::cin >> r;
std::vector<bool> v(n);
std::fill(v.begin(), v.begin() + r, true);
do {
for (int i = 0; i < n; ++i) {
if (v[i]) {
std::cout << (i + 1) << " ";
}
}
std::cout << "\n";
} while (std::prev_permutation(v.begin(), v.end()));
return 0;
}
A bit of explanation:
It works by creating a "selection array" (v
), where we place r
selectors, then we create all permutations of these selectors, and print the corresponding set member if it is selected in in the current permutation of v
.
You can implement it if you note that for each level r you select a number from 1 to n.
In C++, we need to 'manually' keep the state between calls that produces results (a combination): so, we build a class that on construction initialize the state, and has a member that on each call returns the combination while there are solutions: for instance
#include <iostream>
#include <iterator>
#include <vector>
#include <cstdlib>
using namespace std;
struct combinations
{
typedef vector<int> combination_t;
// initialize status
combinations(int N, int R) :
completed(N < 1 || R > N),
generated(0),
N(N), R(R)
{
for (int c = 1; c <= R; ++c)
curr.push_back(c);
}
// true while there are more solutions
bool completed;
// count how many generated
int generated;
// get current and compute next combination
combination_t next()
{
combination_t ret = curr;
// find what to increment
completed = true;
for (int i = R - 1; i >= 0; --i)
if (curr[i] < N - R + i + 1)
{
int j = curr[i] + 1;
while (i <= R-1)
curr[i++] = j++;
completed = false;
++generated;
break;
}
return ret;
}
private:
int N, R;
combination_t curr;
};
int main(int argc, char **argv)
{
int N = argc >= 2 ? atoi(argv[1]) : 5;
int R = argc >= 3 ? atoi(argv[2]) : 2;
combinations cs(N, R);
while (!cs.completed)
{
combinations::combination_t c = cs.next();
copy(c.begin(), c.end(), ostream_iterator<int>(cout, ","));
cout << endl;
}
return cs.generated;
}
test output:
1,2,
1,3,
1,4,
1,5,
2,3,
2,4,
2,5,
3,4,
3,5,
4,5,
If you are connecting to the MySQL using remote machine(Example workbench) etc., use following steps to eliminate this error on OS where MySQL is installed
mysql -u root -p
CREATE USER '<<username>>'@'%%' IDENTIFIED BY '<<password>>';
GRANT ALL PRIVILEGES ON * . * TO '<<username>>'@'%%';
FLUSH PRIVILEGES;
Try logging into the MYSQL instance.
This worked for me to eliminate this error.
ASCII defines 128 characters, which map to the numbers 0–127. Unicode defines (less than) 221 characters, which, similarly, map to numbers 0–221 (though not all numbers are currently assigned, and some are reserved).
Unicode is a superset of ASCII, and the numbers 0–127 have the same meaning in ASCII as they have in Unicode. For example, the number 65 means "Latin capital 'A'".
Because Unicode characters don't generally fit into one 8-bit byte, there are numerous ways of storing Unicode characters in byte sequences, such as UTF-32 and UTF-8.
If you are using PHP's curl
bindings, you can check the error code using curl_getinfo
as such:
$handle = curl_init($url);
curl_setopt($handle, CURLOPT_RETURNTRANSFER, TRUE);
/* Get the HTML or whatever is linked in $url. */
$response = curl_exec($handle);
/* Check for 404 (file not found). */
$httpCode = curl_getinfo($handle, CURLINFO_HTTP_CODE);
if($httpCode == 404) {
/* Handle 404 here. */
}
curl_close($handle);
/* Handle $response here. */
To hide arrows and cross in a "time" input :
#inputId::-webkit-outer-spin-button,
#inputId::-webkit-inner-spin-button,
#inputId::-webkit-clear-button{
-webkit-appearance: none;
margin: 0;
}
I have faced issue like my main page index.jsp contains the below line but eventhough rendering was not proper in IE. Found the issue and I have added the code in all the files which I included in index.jsp. Hurray! it worked.
So You need to add below code in all the files which you include into the page otherwise it wont work.
<!doctype html>
<head>
<meta http-equiv="X-UA-Compatible" content="IE=Edge">
</head>
//Element[@attribute1="abc" and @attribute2="xyz" and .="Data"]
The reason why I add this answer is that I want to explain the relationship of .
and text()
.
The first thing is when using []
, there are only two types of data:
[number]
to select a node from node-set[bool]
to filter a node-set from node-setIn this case, the value is evaluated to boolean by function boolean()
, and there is a rule:
Filters are always evaluated with respect to a context.
When you need to compare text()
or .
with a string "Data"
, it first uses string()
function to transform those to string type, than gets a boolean result.
There are two important rule about string()
:
The string()
function converts a node-set to a string by returning the string value of the first node in the node-set, which in some instances may yield unexpected results.
text()
is relative path that return a node-set contains all the text node of current node(context node), like ["Data"]
.
When it is evaluated by string(["Data"])
, it will return the first node of node-set, so you get "Data" only when there is only one text node in the node-set.
If you want the string()
function to concatenate all child text, you must then pass a single node instead of a node-set.
For example, we get a node-set ['a', 'b']
, you can pass there parent node to string(parent)
, this will return 'ab'
, and of cause string(.)
in you case will return an concatenated string "Data"
.
Both way will get same result only when there is a text node.
Use escape characters for example this code:
var message = "I want to learn \"c#\"";
Console.WriteLine(message);
will output:
I want to learn "c#"
A short traverse could be given too using the sub-expression operator $( ), which returns the result of one or more statements.
$hash = @{ a = 1; b = 2; c = 3}
forEach($y in $hash.Keys){
Write-Host "$y -> $($hash[$y])"
}
Result:
a -> 1
b -> 2
c -> 3
You can write '&' to add string and integer :
processDetails=objProcess.ProcessId & ":" & objProcess.name
message = msgbox(processDetails,16,"Details")
output will be:
5577:wscript.exe
select * from mytable where mydate > now() - interval '1 year';
If you only care about the date and not the time, substitute current_date
for now()
As others have suggested, you are not clearly explaining your problem, what you are trying to do, or what your expectations are as to what this function is actually supposed to do.
If I have understood correctly, then you are expecting this function to refresh the page for you (you actually use the term "reloads the browser").
But this function is not intended to reload the browser.
All the function does, is to add (push) a new "state" onto the browser history, so that in future, the user will be able to return to this state that the web-page is now in.
Normally, this is used in conjunction with AJAX calls (which refresh only a part of the page).
For example, if a user does a search "CATS" in one of your search boxes, and the results of the search (presumably cute pictures of cats) are loaded back via AJAX, into the lower-right of your page -- then your page state will not be changed. In other words, in the near future, when the user decides that he wants to go back to his search for "CATS", he won't be able to, because the state doesn't exist in his history. He will only be able to click back to your blank search box.
Hence the need for the function
history.pushState({},"Results for `Cats`",'url.html?s=cats');
It is intended as a way to allow the programmer to specifically define his search into the user's history trail. That's all it is intended to do.
When the function is working properly, the only thing you should expect to see, is the address in your browser's address-bar change to whatever you specify in your URL.
If you already understand this, then sorry for this long preamble. But it sounds from the way you pose the question, that you have not.
As an aside, I have also found some contradictions between the way that the function is described in the documentation, and the way it works in reality. I find that it is not a good idea to use blank or empty values as parameters.
See my answer to this SO question. So I would recommend putting a description in your second parameter. From memory, this is the description that the user sees in the drop-down, when he clicks-and-holds his mouse over "back" button.
Use the native element.submit()
to circumvent the preventDefault in the jQuery handler, and note that your return statement only returns from the each loop, it does not return from the event handler
$('form').submit(function(e){
e.preventDefault();
var valid = true;
$('[name="atendeename[]"]', this).each(function(index, el){
if ( $(el).val() ) {
var entree = $(el).next('input');
if ( ! entree.val()) {
entree.focus();
valid = false;
}
}
});
if (valid) this.submit();
});
I frequently use std::string to hold utf-8 characters without any problems at all. I heartily recommend doing this when interfacing with API's which use utf-8 as the native string type as well.
For example, I use utf-8 when interfacing my code with the Tcl interpreter.
The major caveat is the length of the std::string, is no longer the number of characters in the string.
String result = String.format("%0" + messageDigest.length + "s", hexString.toString())
That's the shortest solution given what you already have. If you could convert the byte array to a numeric value, String.format
can convert it to a hex string at the same time.
None of the above worked for me. In the end I used:
^([0-1]?[0-9]|2[0-3]):[0-5][0-9]$ (js engine)
Logic:
The first number (hours) is either:
a number between 0 and 19 --> [0-1]?[0-9]
(allowing single digit number)
or
a number between 20 - 23 --> 2[0-3]
the second number (minutes) is always a number between 00 and 59 --> [0-5][0-9]
(not allowing a single digit)
I had a situation where I needed to perform a series of operations on a result set (table). The operations are all set operations, so its not an issue, but... I needed to do this in multiple places. So putting the relevant pieces in a table type, then populating a table variable w/ each result set allows me to call the sp and repeat the operations each time i need to .
While this does not address the exact question he asks, it does address how to perform an operation on all rows of a table without using a cursor.
@Johannes offers no insight into his motivation , so this may or may not help him.
my research led me to this well written article which served as a basis for my solution https://codingsight.com/passing-data-table-as-parameter-to-stored-procedures/
Here is the setup
drop type if exists cpRootMapType
go
create type cpRootMapType as Table(
RootId1 int
, RootId2 int
)
go
drop procedure if exists spMapRoot2toRoot1
go
create procedure spMapRoot2toRoot1
(
@map cpRootMapType Readonly
)
as
update linkTable set root = root1
from linktable lt
join @map m on lt.root = root2
update comments set root = root1
from comments c
join @map m on c.root = root2
-- ever growing list of places this map would need to be applied....
-- now consolidated into one place
here is the implementation
... populate #matches
declare @map cpRootMapType
insert @map select rootid1, rootid2 from #matches
exec spMapRoot2toRoot1 @map
I really love var_export(). If you like copy/paste-able code, try:
echo '<pre>' . var_export($data, true) . '</pre>';
Or even something like this for color syntax highlighting:
highlight_string("<?php\n\$data =\n" . var_export($data, true) . ";\n?>");
Even More straightforward:
axios.post('/addUser',{
userName: 'Fred',
userEmail: '[email protected]'
})
.then(function (response) {
console.log(response);
})
.catch(function (error) {
console.log(error);
});
When you want to show an URL of remote branches, try:
git remote -v
Make a copy of the enumeration, using an IEnumerable extension method in this case, and enumerate over it. This would add a copy of every element in every inner enumerable to that enumeration.
foreach(var item in Enumerable)
{
foreach(var item2 in item.Enumerable.ToList())
{
item.Add(item2)
}
}
You need to specify the -vb option to increase the video bitrate, otherwise you get the default which produces smaller videos but with more artifacts.
Try something like this:
ffmpeg -r 25 -i %4d.png -vb 20M myvideo.mpg
I created an example that uses Express and Multer. It is very simple and avoids all Connect warnings
It might help somebody.
The problem is that you are calling toString()
on the InputStream
object itself. This will return a String
representation of the InputStream
object not the actual PDF document.
You want to read the PDF only as bytes as PDF is a binary format. You will then be able to write out that same byte
array and it will be a valid PDF as it has not been modified.
e.g. to read a file as bytes
File file = new File(sourcePath);
InputStream inputStream = new FileInputStream(file);
byte[] bytes = new byte[file.length()];
inputStream.read(bytes);
>>> import random
>>> d = dict(Venezuela = 1, Spain = 2, USA = 3, Italy = 4)
>>> random.choice(d.keys())
'Venezuela'
>>> random.choice(d.keys())
'USA'
By calling random.choice on the keys
of the dictionary (the countries).
If you have this error trying to consume a service that you can't add the header Access-Control-Allow-Origin *
in that application, but you can put in front of the server a reverse proxy, the error can avoided with a header rewrite.
Assuming the application is running on the port 8080 (public domain at www.mydomain.com), and you put the reverse proxy in the same host at port 80, this is the configuration for Nginx reverse proxy:
server {
listen 80;
server_name www.mydomain.com;
access_log /var/log/nginx/www.mydomain.com.access.log;
error_log /var/log/nginx/www.mydomain.com.error.log;
location / {
proxy_pass http://127.0.0.1:8080;
add_header Access-Control-Allow-Origin *;
}
}
Excel does not have any way to do this.
The result of a formula in a cell in Excel must be a number, text, logical (boolean) or error. There is no formula cell value type of "empty" or "blank".
One practice that I have seen followed is to use NA() and ISNA(), but that may or may not really solve your issue since there is a big differrence in the way NA() is treated by other functions (SUM(NA()) is #N/A while SUM(A1) is 0 if A1 is empty).
I've had a similar requirement: I needed to inject a Spring-managed repository bean into my Person
entity class ("entity" as in "something with an identity", for example an JPA entity). A Person
instance has friends, and for this Person
instance to return its friends, it shall delegate to its repository and query for friends there.
@Entity
public class Person {
private static PersonRepository personRepository;
@Id
@GeneratedValue
private long id;
public static void setPersonRepository(PersonRepository personRepository){
this.personRepository = personRepository;
}
public Set<Person> getFriends(){
return personRepository.getFriends(id);
}
...
}
.
@Repository
public class PersonRepository {
public Person get Person(long id) {
// do database-related stuff
}
public Set<Person> getFriends(long id) {
// do database-related stuff
}
...
}
So how did I inject that PersonRepository
singleton into the static field of the Person
class?
I created a @Configuration
, which gets picked up at Spring ApplicationContext construction time. This @Configuration
gets injected with all those beans that I need to inject as static fields into other classes. Then with a @PostConstruct
annotation, I catch a hook to do all static field injection logic.
@Configuration
public class StaticFieldInjectionConfiguration {
@Inject
private PersonRepository personRepository;
@PostConstruct
private void init() {
Person.setPersonRepository(personRepository);
}
}
Just a note for people who may have found this later (and want java way of achieving this); FirefoxOptions
is also capable of enabling the headless mode:
FirefoxOptions firefoxOptions = new FirefoxOptions();
firefoxOptions.setHeadless(true);
Get a handle to the root layout used, then set the background color on that. The root layout is whatever you called setContentView with.
setContentView(R.layout.main);
// Now get a handle to any View contained
// within the main layout you are using
View someView = findViewById(R.id.randomViewInMainLayout);
// Find the root view
View root = someView.getRootView();
// Set the color
root.setBackgroundColor(getResources().getColor(android.R.color.red));
There is a tipping point at which it's beneficial to have more than one css file.
A site with 1M+ pages, which the average user is likely to only ever see say 5 of, might have a stylesheet of immense proportions, so trying to save the overhead of a single additional request per page load by having a massive initial download is false economy.
Stretch the argument to the extreme limit - it's like suggesting that there should be one large stylesheet maintained for the entire web. Clearly nonsensical.
The tipping point will be different for each site though so there's no hard and fast rule. It will depend upon the quantity of unique css per page, the number of pages, and the number of pages the average user is likely to routinely encounter while using the site.
When I started with $ nohup storm dev-zookeper
,
METHOD1 : using jobs
,
prayagupd@prayagupd:/home/vmfest# jobs -l
[1]+ 11129 Running nohup ~/bin/storm/bin/storm dev-zookeeper &
METHOD2 : using ps
command.
$ ps xw
PID TTY STAT TIME COMMAND
1031 tty1 Ss+ 0:00 /sbin/getty -8 38400 tty1
10582 ? S 0:01 [kworker/0:0]
10826 ? Sl 0:18 java -server -Dstorm.options= -Dstorm.home=/root/bin/storm -Djava.library.path=/usr/local/lib:/opt/local/lib:/usr/lib -Dsto
10853 ? Ss 0:00 sshd: vmfest [priv]
TTY column with ?
=> nohup
running programs.
Description
Reference
$ man ps
# then search /PROCESS STATE CODES
Until Android 7.1 you will get it with:
Build.SERIAL
On Android 8 (SDK 26) and above, this field will return UNKNOWN
and must be accessed with:
Build.getSerial()
which requires the dangerous permission
android.permission.READ_PHONE_STATE
.
Since Android Q using Build.getSerial()
gets a bit more complicated by requiring:
android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE
(which can only be acquired by system apps), or for the calling package to be the device or profile owner and have the READ_PHONE_STATE
permission. This means most apps won't be able to uses this feature. See the Android Q announcement from Google.
If you just require a unique identifier, it's best to avoid using hardware identifiers as Google continuously tries to make it harder to access them for privacy reasons. You could just generate a UUID.randomUUID().toString();
and save it the first time it needs to be accessed in e.g. shared preferences. Alternatively you could use ANDROID_ID
which is a 8 byte long hex string unique to the device, user and (only Android 8+) app installation. For more info on that topic, see Best practices for unique identifiers.
I think that your problem is actually with not correctly indenting init function.It should be like this
class MyClass():
def __init__(self, filename):
pass
def parse_file():
pass
Be aware that Count() ignores null values, so if you need to allow for null as its own distinct value you can do something tricky like:
select count(distinct my_col)
+ count(distinct Case when my_col is null then 1 else null end)
from my_table
/
document.location
is an object, not a string. It returns (by default) the full path, but it actually holds more info than that.
Shortcut for solution: document.location.toString().substring(2,3);
Or use document.location.href
or window.location.href
While there are JS implementations of the MD5 algorithm, older browsers are generally unable to read files from the local filesystem.
I wrote that in 2009. So what about new browsers?
With a browser that supports the FileAPI, you *can * read the contents of a file - the user has to have selected it, either with an <input>
element or drag-and-drop. As of Jan 2013, here's how the major browsers stack up:
Unlike Virtualization, containerization uses the same host os. So the container built on linux can not be run on windows and vice versa.
In windows, you have to take help of virtuallization (using Hyper-v) to have same os as your containers's os and then you should be able to run the same.
Docker for windows is similar app which is built on Hyper-v and helps in running linux docker container on windows. But as far as I know, there is nothing as such which helps run windows containers on linux.
Often when you need to show so many points on the map, you'd be better off using the server-side approach, this article explains when to use each:
Geocoding Strategies: https://developers.google.com/maps/articles/geocodestrat
The client-side limit is not exactly "10 requests per second", and since it's not explained in the API docs I wouldn't rely on its behavior.
This is normally the case then the ID is not a natural part of the entity, but a database artifact that needs be abstracted away.
It is a design decision - to only allow setting the ID during construction or through method invocation, so it is managed internally by the class.
You can write a setter yourself, assuming you have a backing field:
private int Id = 0;
public void SetId (int id)
{
this.Id = id;
}
Or through a constructor:
private int Id = 0;
public Person (int id)
{
this.Id = id;
}
Try to put this line of code in your main projects gradle script:
configurations { all*.exclude group: 'com.android.support', module: 'support-v4' }
I have two libraries linked to my project and they where using 'com.android.support:support-v4:22.0.0'.
Hope it helps someone.
You want to iterate through the list, sum all the numbers, and then divide the sum by the number of elements in the list. You can use a for loop to accomplish this.
average = 0
sum = 0
for n in numbers:
sum = sum + n
average = sum / len(numbers)
The for loop looks at each element in the list, and then adds it to the current sum. You then divide by the length of the list (or the number of elements in the list) to find the average.
I would recommend googling a python reference to find out how to use common programming concepts like loops and conditionals so that you feel comfortable when starting out. There are lots of great resources online that you could look up.
Good luck!
For ppl who are still facing this issue, try adding s3_host as follows to the config hash
:storage => :s3,
:s3_credentials => {:access_key_id => access key,
:secret_access_key => secret access key},
:bucket => bucket name here,
:s3_host_name => s3-us-west-1.amazonaws.com or whatever comes as per your region}.
This fixed the issue for me.
Here is a work around but not always a great one, depending on how much you scale it. Explanation can be found here: https://www.geekgoddess.com/how-to-resize-the-google-nocaptcha-recaptcha/
.g-recaptcha {
transform:scale(0.77);
transform-origin:0 0;
}
UPDATE: Google has added support for a smaller size via a parameter. Have a look at the docs - https://developers.google.com/recaptcha/docs/display#render_param
Per the docs:
Mac OS X
- Download Visual Studio Code for Mac OS X.
- Double-click on VSCode-osx.zip to expand the contents.
- Drag Visual Studio Code.app to the Applications folder, making it available in the Launchpad.
- Add VS Code to your Dock by right-clicking on the icon and choosing Options, Keep in Dock.
Tip: If you want to run VS Code from the terminal, append the following to your ~/.bash_profile file (~/.zshrc in case you use zsh).
code () { VSCODE_CWD="$PWD" open -n -b "com.microsoft.VSCode" --args $* ;}
Now, you can simply type code . in any folder to start editing files in that folder.
Tip: You can also add it to VS Code Insiders build by changing "com.microsoft.VSCodeInsiders". Also if you don't to type the whole word code, just change it to c.
Linux
- Download Visual Studio Code for Linux.
- Make a new folder and extract VSCode-linux-x64.zip inside that folder.
- Double click on Code to run Visual Studio Code.
Tip: If you want to run VS Code from the terminal, create the following link substituting /path/to/vscode/Code with the absolute path to the Code executable
sudo ln -s /path/to/vscode/Code /usr/local/bin/code
Now, you can simply type code . in any folder to start editing files in that folder.
Ok, Here's what I found out.
What I didn't understand is that all fragments that are attached to an activity when a config change happens (phone rotates) are recreated and added back to the activity. (which makes sense)
What was happening in the TabListener constructor was the tab was detached if it was found and attached to the activity. See below:
mFragment = mActivity.getFragmentManager().findFragmentByTag(mTag);
if (mFragment != null && !mFragment.isDetached()) {
Log.d(TAG, "constructor: detaching fragment " + mTag);
FragmentTransaction ft = mActivity.getFragmentManager().beginTransaction();
ft.detach(mFragment);
ft.commit();
}
Later in the activity onCreate the previously selected tab was selected from the saved instance state. See below:
if (savedInstanceState != null) {
bar.setSelectedNavigationItem(savedInstanceState.getInt("tab", 0));
Log.d(TAG, "FragmentTabs.onCreate tab: " + savedInstanceState.getInt("tab"));
Log.d(TAG, "FragmentTabs.onCreate number: " + savedInstanceState.getInt("number"));
}
When the tab was selected it would be reattached in the onTabSelected callback.
public void onTabSelected(Tab tab, FragmentTransaction ft) {
if (mFragment == null) {
mFragment = Fragment.instantiate(mActivity, mClass.getName(), mArgs);
Log.d(TAG, "onTabSelected adding fragment " + mTag);
ft.add(android.R.id.content, mFragment, mTag);
} else {
Log.d(TAG, "onTabSelected attaching fragment " + mTag);
ft.attach(mFragment);
}
}
The fragment being attached is the second call to the onCreateView and onActivityCreated methods. (The first being when the system is recreating the acitivity and all attached fragments) The first time the onSavedInstanceState Bundle would have saved data but not the second time.
The solution is to not detach the fragment in the TabListener constructor, just leave it attached. (You still need to find it in the FragmentManager by it's tag) Also, in the onTabSelected method I check to see if the fragment is detached before I attach it. Something like this:
public void onTabSelected(Tab tab, FragmentTransaction ft) {
if (mFragment == null) {
mFragment = Fragment.instantiate(mActivity, mClass.getName(), mArgs);
Log.d(TAG, "onTabSelected adding fragment " + mTag);
ft.add(android.R.id.content, mFragment, mTag);
} else {
if(mFragment.isDetached()) {
Log.d(TAG, "onTabSelected attaching fragment " + mTag);
ft.attach(mFragment);
} else {
Log.d(TAG, "onTabSelected fragment already attached " + mTag);
}
}
}
If you don't want to duplicate code, and like me you just want to show stats, in your view model, you could just pass in the models you want to get data from like so:
public class GameViewModel
{
public virtual Ship Ship { get; set; }
public virtual GamePlayer GamePlayer { get; set; }
}
Then, in your controller just run your queries on the respective models, pass them to the view model and return it, example:
GameViewModel PlayerStats = new GameViewModel();
GamePlayer currentPlayer = (from c in db.GamePlayer [more queries]).FirstOrDefault();
[code to check if results]
//pass current player into custom view model
PlayerStats.GamePlayer = currentPlayer;
Like I said, you should only really do this if you want to display stats from the relevant tables, and there's no other part of the CRUD process happening, for security reasons other people have mentioned above.
One way you can do it is pause the script, look at what code follows where you are currently stopped, e.g.:
var something = somethingElse.blah;
In the console, do the following:
delete somethingElse;
Then play the script: it will cause a fatal error when it tries to access somethingElse
, and the script will die. Voila, you've terminated the script.
EDIT: Originally, I deleted a variable. That's not good enough. You have to delete a function or an object of which JavaScript attempts to access a property.
In my case, I found out it was division by zero.
You can write a script like this:
cd /X/Y
git pull
You can name it something like gitpull
.
If you'd rather have it do arbitrary directories instead of /X/Y
:
cd $1
git pull
Then you can call it with gitpull /X/Z
Lastly, you can try finding repositories. I have a ~/git
folder which contains repositories, and you can use this to do a pull on all of them.
g=`find /X -name .git`
for repo in ${g[@]}
do
cd ${repo}
cd ..
git pull
done
Another C# example. I just made an extension method for it.
public static string GetCellFromTable(this IWebElement table, int rowIndex, int columnIndex)
{
return table.FindElements(By.XPath("./tbody/tr"))[rowIndex].FindElements(By.XPath("./td"))[columnIndex].Text;
}
I know that due to this ugly anonymous inner class usage of TransactionTemplate
doesn't look nice, but when for some reason we want to have a test method transactional IMHO it is the most flexible option.
In some cases (it depends on the application type) the best way to use transactions in Spring tests is a turned-off @Transactional
on the test methods. Why? Because @Transactional
may leads to many false-positive tests. You may look at this sample article to find out details. In such cases TransactionTemplate
can be perfect for controlling transaction boundries when we want that control.
I came across this today, when I was playing around with someone else's website.
I realized I could attach a break-point in the debugger to some line of code before what I wanted to dynamically edit. And since break-points stay even after a reload of the page, I was able to edit the changes I wanted while paused at break-point and then continued to let the page load.
So as a quick work around, and if it works with your situation:
<script src="https://code.jquery.com/jquery-1.10.2.js"></script>
<script language='javascript'>
jQuery.fn.filterByText = function(textbox, selectSingleMatch) {
return this.each(function() {
var select = this;`enter code here`
var options = [];
$(select).find('option').each(function() {
options.push({value: $(this).val(), text: $(this).text()});
});
$(select).data('options', options);
$(textbox).bind('change keyup', function() {
var options = $(select).empty().scrollTop(0).data('options');
var search = $.trim($(this).val());
var regex = new RegExp(search,'gi');
$.each(options, function(i) {
var option = options[i];
if(option.text.match(regex) !== null) {
$(select).append(
$('<option>').text(option.text).val(option.value)
);
}
});
if (selectSingleMatch === true &&
$(select).children().length === 1) {
$(select).children().get(0).selected = true;
}
});
});
};
$(function() {
$('#selectorHtmlElement').filterByText($('#textboxFiltr2'), true);
});
</script>
You need to stop the submission if an error occured:
HTML
<form name ="myform" onsubmit="return validation();">
JS
if (document.myform.username.value == "") {
document.getElementById('errors').innerHTML="*Please enter a username*";
return false;
}
>>> ord('a')
97
>>> chr(97)
'a'
GET and POST method set like this... Two types for api calling 1)get() and 2) post() . get() method to get value from api json array to get value & post() method use in our data post in url and get response.
public class HttpClientForExample {
private final String USER_AGENT = "Mozilla/5.0";
public static void main(String[] args) throws Exception {
HttpClientExample http = new HttpClientExample();
System.out.println("Testing 1 - Send Http GET request");
http.sendGet();
System.out.println("\nTesting 2 - Send Http POST request");
http.sendPost();
}
// HTTP GET request
private void sendGet() throws Exception {
String url = "http://www.google.com/search?q=developer";
HttpClient client = new DefaultHttpClient();
HttpGet request = new HttpGet(url);
// add request header
request.addHeader("User-Agent", USER_AGENT);
HttpResponse response = client.execute(request);
System.out.println("\nSending 'GET' request to URL : " + url);
System.out.println("Response Code : " +
response.getStatusLine().getStatusCode());
BufferedReader rd = new BufferedReader(
new InputStreamReader(response.getEntity().getContent()));
StringBuffer result = new StringBuffer();
String line = "";
while ((line = rd.readLine()) != null) {
result.append(line);
}
System.out.println(result.toString());
}
// HTTP POST request
private void sendPost() throws Exception {
String url = "https://selfsolve.apple.com/wcResults.do";
HttpClient client = new DefaultHttpClient();
HttpPost post = new HttpPost(url);
// add header
post.setHeader("User-Agent", USER_AGENT);
List<NameValuePair> urlParameters = new ArrayList<NameValuePair>();
urlParameters.add(new BasicNameValuePair("sn", "C02G8416DRJM"));
urlParameters.add(new BasicNameValuePair("cn", ""));
urlParameters.add(new BasicNameValuePair("locale", ""));
urlParameters.add(new BasicNameValuePair("caller", ""));
urlParameters.add(new BasicNameValuePair("num", "12345"));
post.setEntity(new UrlEncodedFormEntity(urlParameters));
HttpResponse response = client.execute(post);
System.out.println("\nSending 'POST' request to URL : " + url);
System.out.println("Post parameters : " + post.getEntity());
System.out.println("Response Code : " +
response.getStatusLine().getStatusCode());
BufferedReader rd = new BufferedReader(
new InputStreamReader(response.getEntity().getContent()));
StringBuffer result = new StringBuffer();
String line = "";
while ((line = rd.readLine()) != null) {
result.append(line);
}
System.out.println(result.toString());
}
}
The documentation for Gerrit, in particular the "Push changes" section, explains that you push to the "magical refs/for/'branch'
ref using any Git client tool".
The following image is taken from the Intro to Gerrit. When you push to Gerrit, you do git push gerrit HEAD:refs/for/<BRANCH>
. This pushes your changes to the staging area (in the diagram, "Pending Changes"). Gerrit doesn't actually have a branch called <BRANCH>
; it lies to the git client.
Internally, Gerrit has its own implementation for the Git and SSH stacks. This allows it to provide the "magical" refs/for/<BRANCH>
refs.
When a push request is received to create a ref in one of these namespaces Gerrit performs its own logic to update the database, and then lies to the client about the result of the operation. A successful result causes the client to believe that Gerrit has created the ref, but in reality Gerrit hasn’t created the ref at all. [Link - Gerrit, "Gritty Details"].
After a successful patch (i.e, the patch has been pushed to Gerrit, [putting it into the "Pending Changes" staging area], reviewed, and the review has passed), Gerrit pushes the change from the "Pending Changes" into the "Authoritative Repository", calculating which branch to push it into based on the magic it did when you pushed to refs/for/<BRANCH>
. This way, successfully reviewed patches can be pulled directly from the correct branches of the Authoritative Repository
.
The CASE
is just a "switch" to return a value - not to execute a whole code block.
You need to change your code to something like this:
SELECT
@selectoneCount = CASE @Temp
WHEN 1 THEN @selectoneCount + 1
WHEN 2 THEN @selectoneCount + 1
END
If @temp
is set to none of those values (1 or 2), then you'll get back a NULL
Three years later, I ran into the same problem. Here's my solution, everybody feel free to cut-n-paste. The simplest things keep us up all night! Running on an ATMega, and Adafruit Feather M0:
void setup() {
// turn on Serial so we can see...
Serial.begin(9600);
// the culprit:
uint8_t my_str[6]; // an array big enough for a 5 character string
// give it something so we can see what it's doing
my_str[0] = 'H';
my_str[1] = 'e';
my_str[2] = 'l';
my_str[3] = 'l';
my_str[4] = 'o';
my_str[5] = 0; // be sure to set the null terminator!!!
// can we see it?
Serial.println((char*)my_str);
// can we do logical operations with it as-is?
Serial.println((char*)my_str == 'Hello');
// okay, it can't; wrong data type (and no terminator!), so let's do this:
String str((char*)my_str);
// can we see it now?
Serial.println(str);
// make comparisons
Serial.println(str == 'Hello');
// one more time just because
Serial.println(str == "Hello");
// one last thing...!
Serial.println(sizeof(str));
}
void loop() {
// nothing
}
And we get:
Hello // as expected
0 // no surprise; wrong data type and no terminator in comparison value
Hello // also, as expected
1 // YAY!
1 // YAY!
6 // as expected
Hope this helps someone!
Make outer <div>
to position: relative
and inner <div>
to position: absolute
. It should work for you.
To answer the second part of your question, to convert to binary you can use a format string and the ord
function:
>>> byte = 'a'
>>> '{0:08b}'.format(ord(byte))
'01100001'
Note that the format pads with the right number of leading zeros, which seems to be your requirement. This method needs Python 2.6 or later.
I think the most elegant solution is to pass a lambda function to "type", as mentioned by Chepner. In addition to this, if you do not know beforehand what the delimiter of your list will be, you can also pass multiple delimiters to re.split:
# python3 test.py -l "abc xyz, 123"
import re
import argparse
parser = argparse.ArgumentParser(description='Process a list.')
parser.add_argument('-l', '--list',
type=lambda s: re.split(' |, ', s),
required=True,
help='comma or space delimited list of characters')
args = parser.parse_args()
print(args.list)
# Output: ['abc', 'xyz', '123']
You can't access the method fxn since it's not static. Static methods can only access other static methods directly. If you want to use fxn in your main method you need to:
...
Two two = new Two();
x = two.fxn(x)
...
That is, make a Two-Object and call the method on that object.
...or make the fxn method static.
C:\oraclexe\app\oracle\product\10.2.0\server\jdbc\lib\ojdbc14.jar
ojdbc14.jar(it's jar file)
Here is a code I am using and which is working for me.
window.onload = function(){
setTimeout(function(){
var scriptElement=document.createElement('script');
scriptElement.type = 'text/javascript';
scriptElement.src = "vendor/js/jquery.min.js";
document.head.appendChild(scriptElement);
setTimeout(function() {
var scriptElement1=document.createElement('script');
scriptElement1.type = 'text/javascript';
scriptElement1.src = "gallery/js/lc_lightbox.lite.min.js";
document.head.appendChild(scriptElement1);
}, 100);
setTimeout(function() {
$(document).ready(function(e){
lc_lightbox('.elem', {
wrap_class: 'lcl_fade_oc',
gallery : true,
thumb_attr: 'data-lcl-thumb',
slideshow_time : 3000,
skin: 'minimal',
radius: 0,
padding : 0,
border_w: 0,
});
});
}, 200);
}, 150);
};
You will need to add handlers in Apache to handle php code.
Edit by command sudo vi /etc/httpd/conf/httpd.conf
Add these two handlers
AddType application/x-httpd-php .php
AddType application/x-httpd-php .php3
at position specified below
<IfModule mime_module>
AddType application/x-compress .Z
AddType application/x-gzip .gz .tgz
--Add Here--
</IfModule>
for more details on AddType handlers
http://httpd.apache.org/docs/2.2/mod/mod_mime.html
I can recommend make pre-init of future index value, this is very usefull in a lot of case like multi work, some export e.t.c.
just create additional User_Seq
table:
with two fields: id Uniq index
and SeqVal nvarchar(1)
and create next SP, and generated ID value from this SP and put to new User row!
CREATE procedure [dbo].[User_NextValue]
as
begin
set NOCOUNT ON
declare @existingId int = (select isnull(max(UserId)+1, 0) from dbo.User)
insert into User_Seq (SeqVal) values ('a')
declare @NewSeqValue int = scope_identity()
if @existingId > @NewSeqValue
begin
set identity_insert User_Seq on
insert into User_Seq (SeqID) values (@existingId)
set @NewSeqValue = scope_identity()
end
delete from User_Seq WITH (READPAST)
return @NewSeqValue
end
I use this:
logging.conf:
[loggers]
keys=root,applog
[handlers]
keys=rotateFileHandler,rotateConsoleHandler
[formatters]
keys=applog_format,console_format
[formatter_applog_format]
format=%(asctime)s-[%(levelname)-8s]:%(message)s
[formatter_console_format]
format=%(asctime)s-%(filename)s%(lineno)d[%(levelname)s]:%(message)s
[logger_root]
level=DEBUG
handlers=rotateFileHandler,rotateConsoleHandler
[logger_applog]
level=DEBUG
handlers=rotateFileHandler
qualname=simple_example
[handler_rotateFileHandler]
class=handlers.RotatingFileHandler
level=DEBUG
formatter=applog_format
args=('applog.log', 'a', 10000, 9)
[handler_rotateConsoleHandler]
class=StreamHandler
level=DEBUG
formatter=console_format
args=(sys.stdout,)
testapp.py:
import logging
import logging.config
def main():
logging.config.fileConfig('logging.conf')
logger = logging.getLogger('applog')
logger.debug('debug message')
logger.info('info message')
logger.warn('warn message')
logger.error('error message')
logger.critical('critical message')
#logging.shutdown()
if __name__ == '__main__':
main()
instanceof works for instences of the same class or its subclasses
You can use it to test if an object is an instance of a class, an instance of a subclass, or an instance of a class that implements a particular interface.
ArryaList and RoleList are both instanceof List
While
getClass() == o.getClass() will be true only if both objects ( this and o ) belongs to exactly the same class.
So depending on what you need to compare you could use one or the other.
If your logic is: "One objects is equals to other only if they are both the same class" you should go for the "equals", which I think is most of the cases.
For only digits input use android:inputType="numberPassword"
along with editText.setTransformationMethod(null);
to remove auto-hiding of the number.
OR
android:inputType="phone"
For only digits input, I feel these couple ways are better than android:inputType="number"
. The limitation of mentioning "number" as inputType is that the keyboard allows to switch over to characters and also lets other special characters be entered. "numberPassword" inputType doesn't have those issues as the keyboard only shows digits. Even "phone" inputType works as the keyboard doesnt allow you to switch over to characters. But you can still enter couple special characters like +, /, N, etc.
android:inputType="numberPassword" with editText.setTransformationMethod(null);
inputType="phone"
inputType="number"
A popular method to tackle the problem of reducing JavaScript references from HTML files is by using a concatenation tool like Sprockets, which preprocesses and concatenates JavaScript source files together.
Apart from reducing the number of references from the HTML files, this will also reduce the number of hits to the server.
You may then want to run the resulting concatenation through a minification tool like jsmin to have it minified.
Try spannableStringbuilder. Using this we can create string with multiple font sizes.
I used following method to rename the database
take backup of the file using mysqldump or any DB tool eg heidiSQL,mysql administrator etc
Open back up (eg backupfile.sql) file in some text editor.
Search and replace the database name and save file.
Restore the edited SQL file
To see all tables in another schema, you need to have one or more of the following system privileges:
SELECT ANY DICTIONARY
(SELECT | INSERT | UPDATE | DELETE) ANY TABLE
or the big-hammer, the DBA role.
With any of those, you can select:
SELECT DISTINCT OWNER, OBJECT_NAME
FROM DBA_OBJECTS
WHERE OBJECT_TYPE = 'TABLE'
AND OWNER = '[some other schema]'
Without those system privileges, you can only see tables you have been granted some level of access to, whether directly or through a role.
SELECT DISTINCT OWNER, OBJECT_NAME
FROM ALL_OBJECTS
WHERE OBJECT_TYPE = 'TABLE'
AND OWNER = '[some other schema]'
Lastly, you can always query the data dictionary for your own tables, as your rights to your tables cannot be revoked (as of 10g):
SELECT DISTINCT OBJECT_NAME
FROM USER_OBJECTS
WHERE OBJECT_TYPE = 'TABLE'
This thread might be dead, but StyledMarker is available for API v3. Just bind the color change you want to the correct DOM event using the addDomListener() method. This example is pretty close to what you want to do. If you look at the page source, change:
google.maps.event.addDomListener(document.getElementById("changeButton"),"click",function() {
styleIcon.set("color","#00ff00");
styleIcon.set("text","Go");
});
to something like:
google.maps.event.addDomListener("mouseover",function() {
styleIcon.set("color","#00ff00");
styleIcon.set("text","Go");
});
That should be enough to get you moving along.
The Wikipedia page on DOM Events will also help you target the event that you want to capture on the client-side.
Good luck (if you still need it)
That's true, element in Set are not ordered, by definition of the Set Collection. So they can't be access by an index.
But why don't we have a get(object) method, not by providing the index as parameter, but an object that is equal to the one we are looking for? By this way, we can access the data of the element inside the Set, just by knowing its attributes used by the equal method.
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
<item>
<rotate
android:fromDegrees="45"
android:toDegrees="45"
android:pivotX="-40%"
android:pivotY="87%" >
<shape
android:shape="rectangle" >
<stroke android:color="@android:color/transparent" android:width="0dp"/>
<solid
android:color="#fff" />
</shape>
</rotate>
</item>
</layer-list>
Your question can be conveniently divided into several parts:
Does a VPN hide location? Yes, he is capable of this. This is not about GPS determining your location. If you try to change the region via VPN in an application that requires GPS access, nothing will work. However, sites define your region differently. They get an IP address and see what country or region it belongs to. If you can change your IP address, you can change your region. This is exactly what VPNs can do.
How to hide location on Android? There is nothing difficult in figuring out how to set up a VPN on Android, but a couple of nuances still need to be highlighted. Let's start with the fact that not all Android VPNs are created equal. For example, VeePN outperforms many other services in terms of efficiency in circumventing restrictions. It has 2500+ VPN servers and a powerful IP and DNS leak protection system.
You can easily change the location of your Android device by using a VPN. Follow these steps for any device model (Samsung, Sony, Huawei, etc.):
Download and install a trusted VPN.
Install the VPN on your Android device.
Open the application and connect to a server in a different country.
Your Android location will now be successfully changed!
Is it legal? Yes, changing your location on Android is legal. Likewise, you can change VPN settings in Microsoft Edge on your PC, and all this is within the law. VPN allows you to change your IP address, safeguarding your privacy and protecting your actual location from being exposed. However, VPN laws may vary from country to country. There are restrictions in some regions.
Brief summary: Yes, you can change your region on Android and a VPN is a necessary assistant for this. It's simple, safe and legal. Today, VPN is the best way to change the region and unblock sites with regional restrictions.
Simple formatted output inside of the model
@String.Format("{0:d}", model.CreatedOn)
or in the foreach loop
@String.Format("{0:d}", item.CreatedOn)
You have assing button to your imgButton
variable:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
imgButton = (Button) findViewById(R.id.imgButton);
imgButton.setOnClickListener(imgButtonHandler);
}
I have a suspicion that you either copy/pasted a part of your Haml template into the file, or you're working with a non-Unicode/non-UTF-8 friendly editor.
See if you can recreate that file from the scratch in a UTF-8 friendly editor. There are plenty for any platform and see whether this fixes your problem. Start by erasing the line with #content
and retyping it manually.
a simple way to select and clear these blank cells to make them blank:
"If you start an android Service with startService(..)
that Service will remain running until you explicitly invoke stopService(..)
.
There are two reasons that a service can be run by the system. If someone calls Context.startService()
then the system will retrieve the service (creating it and calling its onCreate()
method if needed) and then call its onStartCommand(Intent, int, int)
method with the arguments supplied by the client. The service will at this point continue running until Context.stopService()
or stopSelf()
is called. Note that multiple calls to Context.startService()
do not nest (though they do result in multiple corresponding calls to onStartCommand()
), so no matter how many times it is started a service will be stopped once Context.stopService()
or stopSelf()
is called; however, services can use their stopSelf(int)
method to ensure the service is not stopped until started intents have been processed.
Clients can also use Context.bindService()
to obtain a persistent connection to a service. This likewise creates the service if it is not already running (calling onCreate()
while doing so), but does not call onStartCommand()
. The client will receive the IBinder
object that the service returns from its onBind(Intent)
method, allowing the client to then make calls back to the service. The service will remain running as long as the connection is established (whether or not the client retains a reference on the Service's IBinder
). Usually the IBinder
returned is for a complex interface that has been written in AIDL.
A service can be both started and have connections bound to it. In such a case, the system will keep the service running as long as either it is started or there are one or more connections to it with the Context.BIND_AUTO_CREATE
flag. Once neither of these situations hold, the Service's onDestroy()
method is called and the service is effectively terminated. All cleanup (stopping threads, unregistering receivers) should be complete upon returning from onDestroy()
."
Many of the answers here are similar to the last example in this article.
I am caching multiple Promises, and the resolve()
and reject()
functions can be assigned to any variable or property. As a result I am able to make this code slightly more compact:
function defer(obj) {
obj.promise = new Promise((resolve, reject) => {
obj.resolve = resolve;
obj.reject = reject;
});
}
Here is a simplified example of using this version of defer()
to combine a FontFace
load Promise with another async process:
function onDOMContentLoaded(evt) {
let all = []; // array of Promises
glob = {}; // global object used elsewhere
defer(glob);
all.push(glob.promise);
// launch async process with callback = resolveGlob()
const myFont = new FontFace("myFont", "url(myFont.woff2)");
document.fonts.add(myFont);
myFont.load();
all.push[myFont];
Promise.all(all).then(() => { runIt(); }, (v) => { alert(v); });
}
//...
function resolveGlob() {
glob.resolve();
}
function runIt() {} // runs after all promises resolved
Update: 2 alternatives in case you want to encapsulate the object:
function defer(obj = {}) {
obj.promise = new Promise((resolve, reject) => {
obj.resolve = resolve;
obj.reject = reject;
});
return obj;
}
let deferred = defer();
and
class Deferred {
constructor() {
this.promise = new Promise((resolve, reject) => {
this.resolve = resolve;
this.reject = reject;
});
}
}
let deferred = new Deferred();
I used jQuery .scroll() function to track the event of the toolbar scroll value using scrollTop. I then used a conditional to determine if it was greater than the value on what I wanted to replace. In the below example it was "Results". If the value was true then the results-label added a class 'fixedSimilarLabel' and the new styles were then taken into account.
$('.toolbar').scroll(function (e) {
//console.info(e.currentTarget.scrollTop);
if (e.currentTarget.scrollTop >= 130) {
$('.results-label').addClass('fixedSimilarLabel');
}
else {
$('.results-label').removeClass('fixedSimilarLabel');
}
});
This SQL query return List< Object[] > would.
You can do it this way:
@RestController
@RequestMapping("/survey")
public class SurveyController {
@Autowired
private SurveyRepository surveyRepository;
@RequestMapping(value = "/find", method = RequestMethod.GET)
public Map<Long,String> findSurvey(){
List<Object[]> result = surveyRepository.findSurveyCount();
Map<Long,String> map = null;
if(result != null && !result.isEmpty()){
map = new HashMap<Long,String>();
for (Object[] object : result) {
map.put(((Long)object[0]),object[1]);
}
}
return map;
}
}
Try this. Works for me.
.background {
background-image: url(images/images.jpg);
display: block;
position: relative;
}
.background::after {
content: "";
background: rgba(45, 88, 35, 0.7);
position: absolute;
top: 0;
left: 0;
right: 0;
bottom: 0;
z-index: 1;
}
.background > * {
z-index: 10;
}
Here's a better option:
git remote set-head -a origin
From the documentation:
With -a, the remote is queried to determine its HEAD, then $GIT_DIR/remotes//HEAD is set to the same branch. e.g., if the remote HEAD is pointed at next, "git remote set-head origin -a" will set $GIT_DIR/refs/remotes/origin/HEAD to refs/remotes/origin/next. This will only work if refs/remotes/origin/next already exists; if not it must be fetched first.
This has actually been around quite a while (since v1.6.3); not sure how I missed it!
Just adding for who might need.. Don't forget to alter the table!
ALTER TABLE table_name ADD FULLTEXT(column_name);
My turn:
https://play.golang.org/p/RifHKsX7Puh
package main
import (
"fmt"
"time"
)
func main() {
var n int = 77
v := time.Duration( 1.15 * float64(n) ) * time.Second
fmt.Printf("%v %T", v, v)
}
It helps to remember the simple fact, that underlyingly the time.Duration is a mere int64, which holds nanoseconds value.
This way, conversion to/from time.Duration becomes a formality. Just remember:
I was getting this error and switched the queries to async (await (...).ToListAsync()). All good now.
But
https://docs.docker.com/compose/reference/up/ -quiet-pull Pull without printing progress information
docker-compose up --quiet-pull
not work ?
Alternative for @LadislavMrnka answer. This if for Entity Framework 6.2.0.
If you have a specific DbSet
and an item that needs to be either updated or created:
var name = getNameFromService();
var current = _dbContext.Names.Find(name.BusinessSystemId, name.NameNo);
if (current == null)
{
_dbContext.Names.Add(name);
}
else
{
_dbContext.Entry(current).CurrentValues.SetValues(name);
}
_dbContext.SaveChanges();
However this can also be used for a generic DbSet
with a single primary key or a composite primary key.
var allNames = NameApiService.GetAllNames();
GenericAddOrUpdate(allNames, "BusinessSystemId", "NameNo");
public virtual void GenericAddOrUpdate<T>(IEnumerable<T> values, params string[] keyValues) where T : class
{
foreach (var value in values)
{
try
{
var keyList = new List<object>();
//Get key values from T entity based on keyValues property
foreach (var keyValue in keyValues)
{
var propertyInfo = value.GetType().GetProperty(keyValue);
var propertyValue = propertyInfo.GetValue(value);
keyList.Add(propertyValue);
}
GenericAddOrUpdateDbSet(keyList, value);
//Only use this when debugging to catch save exceptions
//_dbContext.SaveChanges();
}
catch
{
throw;
}
}
_dbContext.SaveChanges();
}
public virtual void GenericAddOrUpdateDbSet<T>(List<object> keyList, T value) where T : class
{
//Get a DbSet of T type
var someDbSet = Set(typeof(T));
//Check if any value exists with the key values
var current = someDbSet.Find(keyList.ToArray());
if (current == null)
{
someDbSet.Add(value);
}
else
{
Entry(current).CurrentValues.SetValues(value);
}
}
You can do this also in kotlin like this:
contentView.apply {
// Set the content view to 0% opacity but visible, so that it is visible
// (but fully transparent) during the animation.
alpha = 0f
visibility = View.VISIBLE
// Animate the content view to 100% opacity, and clear any animation
// listener set on the view.
animate()
.alpha(1f)
.setDuration(resources.getInteger(android.R.integer.config_mediumAnimTime).toLong())
.setListener(null)
}
REST is a generic design technique used to describe how a web service can be accessed. Using REST you can make http requests to get data. If you try it in your browser it would be just like going to a website except instead of returning a web page you would get back XML. Some services will also return data in JSON format which is easier to use with Javascript.
OData is a specific technology that exposes data through REST.
If you want to sum it up real quick, think of it as:
C didn't use to have consts, so #defines were the only way of providing constant values. Both C and C++ do have them now, so there is no point in using them, except when they are going to be tested with #ifdef/ifndef.
This option is not mentioned:
using (var client = new HttpClient())
{
client.BaseAddress = new Uri("http://localhost:9000/");
client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
var foo = new User
{
user = "Foo",
password = "Baz"
}
await client.PostAsJsonAsync("users/add", foo);
}
I'm not sure if anyone has stated this, but Array.delete() and -= value will delete every instance of the value passed to it within the Array. In order to delete the first instance of the particular element you could do something like
arr = [1,3,2,44,5]
arr.delete_at(arr.index(44))
#=> [1,3,2,5]
There could be a simpler way. I'm not saying this is best practice, but it is something that should be recognized.
Here's an approach using generators:
function* square(n) {
for (var i = 0; i < n; i++ ) yield i*i;
}
Then you can write
console.log(...square(7));
Another idea is:
[...Array(5)].map((_, i) => i*i)
Array(5)
creates an unfilled five-element array. That's how Array
works when given a single argument. We use the spread operator to create an array with five undefined elements. That we can then map. See http://ariya.ofilabs.com/2013/07/sequences-using-javascript-array.html.
Alternatively, we could write
Array.from(Array(5)).map((_, i) => i*i)
or, we could take advantage of the second argument to Array#from
to skip the map
and write
Array.from(Array(5), (_, i) => i*i)
A horrible hack which I saw recently, which I do not recommend you use, is
[...1e4+''].map((_, i) => i*i)
I run it like this -
created > startOfDay(-0d)
It gives me all issues created today. When you change -0d
to -1d
, it will give you all issues created yesterday and today.
If you don't want to change the domain-wide default timeout, your best option is to change the deployment descriptor by setting the trans-timeout-seconds attribute in the weblogic-ejb-jar.xml - see http://docs.oracle.com/cd/E11035_01/wls100/jta/trxejb.html
This overrides the "Timeout Seconds" default, only for this specific EJB, while leaving all other EJB unaffected.
Building on this question, I use the following code to indent my messages:
String prefix1 = "short text:";
String prefix2 = "looooooooooooooong text:";
String msg = "indented";
/*
* The second string begins after 40 characters. The dash means that the
* first string is left-justified.
*/
String format = "%-40s%s%n";
System.out.printf(format, prefix1, msg);
System.out.printf(format, prefix2, msg);
This is the output:
short text: indented looooooooooooooong text: indented
This is documented in section "Flag characters" in man 3 printf
.
The React Native Button is very limited in what you can do, see; Button
It does not have a style prop, and you don't set text the "web-way" like <Button>txt</Button>
but via the title property <Button title="txt" />
If you want to have more control over the appearance you should use one of the TouchableXXXX' components like TouchableOpacity They are really easy to use :-)
Nicely explained above!
For all those who may suffer like me to get this working in a localized Windows (mine is XP in Slovak), you may try to replace the %
with a !
So:
SET TEXT=Hello World
SET SUBSTRING=!TEXT:~3,5!
ECHO !SUBSTRING!
Cross platform fastest solution (only uses single fork() for ls, doesn't attempt to count actual characters, doesn't spawn unneeded awk, perl, etc).
Tested on MacOS, Linux - may require minor modification for Solaris:
__ln=( $( ls -Lon "$1" ) )
__size=${__ln[3]}
echo "Size is: $__size bytes"
If required, simplify ls arguments, and adjust offset in ${__ln[3]}.
Note: will follow symlinks.
You can also use Date.now() function.
$num = array (0 => array ('id' => '20110209172713', 'Date' => '2011-02-09', 'Weight' => '200'),
1 => array ('id' => '20110209172747', 'Date' => '2011-02-09', 'Weight' => '180'),
2 => array ('id' => '20110209172827', 'Date' => '2011-02-09', 'Weight' => '175'),
3 => array ('id' => '20110211204433', 'Date' => '2011-02-11', 'Weight' => '195'));
foreach($num as $key => $val)
{
$weight[] = $val['Weight'];
}
echo max($weight);
echo min($weight);
Run this code, it will fetch data from file and display in console
function fileread(filename)
{
var contents= fs.readFileSync(filename);
return contents;
}
var fs =require("fs"); // file system
var data= fileread("abc.txt");
//module.exports.say =say;
//data.say();
console.log(data.toString());
When the directory is deleted, the inode for that directory (and the inodes for its contents) are recycled. The pointer your shell has to that directory's inode (and its contents's inodes) are now no longer valid. When the directory is restored from backup, the old inodes are not (necessarily) reused; the directory and its contents are stored on random inodes. The only thing that stays the same is that the parent directory reuses the same name for the restored directory (because you told it to).
Now if you attempt to access the contents of the directory that your original shell is still pointing to, it communicates that request to the file system as a request for the original inode, which has since been recycled (and may even be in use for something entirely different now). So you get a stale file handle
message because you asked for some nonexistent data.
When you perform a cd
operation, the shell reevaluates the inode location of whatever destination you give it. Now that your shell knows the new inode for the directory (and the new inodes for its contents), future requests for its contents will be valid.
Both nginx -t
and nginx -V
would print out the default nginx config file path.
$ nginx -t
nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful
$ nginx -V
nginx version: nginx/1.11.1
built by gcc 4.9.2 (Debian 4.9.2-10)
built with OpenSSL 1.0.1k 8 Jan 2015
TLS SNI support enabled
configure arguments: --prefix=/etc/nginx --sbin-path=/usr/sbin/nginx --modules-path=/usr/lib/nginx/modules --conf-path=/etc/nginx/nginx.conf ...
If you want, you can get the config file by:
$ nginx -V 2>&1 | grep -o '\-\-conf-path=\(.*conf\)' | cut -d '=' -f2
/etc/nginx/nginx.conf
Even if you have loaded some other config file, they would still print out the default value.
ps aux
would show you the current loaded nginx config file.
$ ps aux
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 11 0.0 0.2 31720 2212 ? Ss Jul23 0:00 nginx: master process nginx -c /app/nginx.conf
So that you could actually get the config file by for example:
$ ps aux | grep "[c]onf" | awk '{print $(NF)}'
/app/nginx.conf
Oh man, one of my pet peeves.
inline
is more like static
or extern
than a directive telling the compiler to inline your functions. extern
, static
, inline
are linkage directives, used almost exclusively by the linker, not the compiler.
It is said that inline
hints to the compiler that you think the function should be inlined. That may have been true in 1998, but a decade later the compiler needs no such hints. Not to mention humans are usually wrong when it comes to optimizing code, so most compilers flat out ignore the 'hint'.
static
- the variable/function name cannot be used in other translation units. Linker needs to make sure it doesn't accidentally use a statically defined variable/function from another translation unit.
extern
- use this variable/function name in this translation unit but don't complain if it isn't defined. The linker will sort it out and make sure all the code that tried to use some extern symbol has its address.
inline
- this function will be defined in multiple translation units, don't worry about it. The linker needs to make sure all translation units use a single instance of the variable/function.
Note: Generally, declaring templates inline
is pointless, as they have the linkage semantics of inline
already. However, explicit specialization and instantiation of templates require inline
to be used.
Specific answers to your questions:
When should I write the keyword 'inline' for a function/method in C++?
Only when you want the function to be defined in a header. More exactly only when the function's definition can show up in multiple translation units. It's a good idea to define small (as in one liner) functions in the header file as it gives the compiler more information to work with while optimizing your code. It also increases compilation time.
When should I not write the keyword 'inline' for a function/method in C++?
Don't add inline just because you think your code will run faster if the compiler inlines it.
When will the compiler not know when to make a function/method 'inline'?
Generally, the compiler will be able to do this better than you. However, the compiler doesn't have the option to inline code if it doesn't have the function definition. In maximally optimized code usually all private
methods are inlined whether you ask for it or not.
As an aside to prevent inlining in GCC, use __attribute__(( noinline ))
, and in Visual Studio, use __declspec(noinline)
.
Does it matter if an application is multithreaded when one writes 'inline' for a function/method?
Multithreading doesn't affect inlining in any way.
I know this was asked a long time ago but I found an answer while searching for this exact question.
There are two solutions.
You can either set an empty onlick attribute on the html element:
<div class="clickElement" onclick=""></div>
Or you can add it in css by setting the pointer cursor:
.clickElement { cursor:pointer }
The problem is that on ipad, the first click on a non-anchor element registers as a hover. This is not really a bug, because it helps with sites that have hover-menus that haven't been tablet/mobile optimised. Setting the cursor or adding an empty onclick attribute tells the browser that the element is indeed a clickable area.
(via http://www.mitch-solutions.com/blog/17-ipad-jquery-live-click-events-not-working)
The DataTable.Clone()
method works great when you want to create a completely new DataTable, but there might be cases where you would want to add the schema columns from one DataTable to another existing DataTable.
For example, if you've derived a new subclass from DataTable, and want to import schema information into it, you couldn't use Clone().
E.g.:
public class CoolNewTable : DataTable {
public void FillFromReader(DbDataReader reader) {
// We want to get the schema information (i.e. columns) from the
// DbDataReader and
// import it into *this* DataTable, NOT a new one.
DataTable schema = reader.GetSchemaTable();
//GetSchemaTable() returns a DataTable with the columns we want.
ImportSchema(this, schema); // <--- how do we do this?
}
}
The answer is just to create new DataColumns in the existing DataTable using the schema table's columns as templates.
I.e. the code for ImportSchema would be something like this:
void ImportSchema(DataTable dest, DataTable source) {
foreach(var c in source.Columns)
dest.Columns.Add(c);
}
or, if you're using Linq:
void ImportSchema(DataTable dest, DataTable source) {
var cols = source.Columns.Cast<DataColumn>().ToArray();
dest.Columns.AddRange(cols);
}
This was just one example of a situation where you might want to copy schema/columns from one DataTable into another one without using Clone() to create a completely new DataTable. I'm sure I've come across several others as well.
If both columns can contain NULL
, but you still want to merge them to a single string, the easiest solution is to use CONCAT_WS():
SELECT FirstName AS First_Name
, LastName AS Last_Name
, CONCAT_WS('', ContactPhoneAreaCode1, ContactPhoneNumber1) AS Contact_Phone
FROM TABLE1
This way you won't have to check for NULL
-ness of each column separately.
Alternatively, if both columns are actually defined as NOT NULL
, CONCAT() will be quite enough:
SELECT FirstName AS First_Name
, LastName AS Last_Name
, CONCAT(ContactPhoneAreaCode1, ContactPhoneNumber1) AS Contact_Phone
FROM TABLE1
As for COALESCE
, it's a bit different beast: given the list of arguments, it returns the first that's not NULL
.
for ST3
$language = "language u wish"
if exists,
go to ~/.config/sublime-text-3/Packages/User/$language.sublime-settings
else
create ~/.config/sublime-text-3/Packages/User/$language.sublime-settings
and set
{ "extensions": [ "yourextension" ] }
This way allows you to enable syntax for composite extensions (e.g. sql.mustache, js.php, etc ... )
Christoph's answer is perfect. Sometimes however you may want to go more classes up than one. In this case you could try the @at-root
and #{}
css features which would enable two root classes to sit next to each other using &
.
This wouldn't work (due to the nothing before &
rule):
container {_x000D_
background:red;_x000D_
color:white;_x000D_
_x000D_
.desc& {_x000D_
background: blue;_x000D_
}_x000D_
_x000D_
.hello {_x000D_
padding-left:50px;_x000D_
}_x000D_
}
_x000D_
But this would (using @at-root plus #{&}
):
container {_x000D_
background:red;_x000D_
color:white;_x000D_
_x000D_
@at-root .desc#{&} {_x000D_
background: blue;_x000D_
}_x000D_
_x000D_
.hello {_x000D_
padding-left:50px;_x000D_
}_x000D_
}
_x000D_
Andrey Tarasevich provides the following explanation:
[Minor changes to formatting made. Parenthetical annotations added in square brackets []
].
The whole idea of using 'do/while' version is to make a macro which will expand into a regular statement, not into a compound statement. This is done in order to make the use of function-style macros uniform with the use of ordinary functions in all contexts.
Consider the following code sketch:
if (<condition>) foo(a); else bar(a);
where
foo
andbar
are ordinary functions. Now imagine that you'd like to replace functionfoo
with a macro of the above nature [namedCALL_FUNCS
]:if (<condition>) CALL_FUNCS(a); else bar(a);
Now, if your macro is defined in accordance with the second approach (just
{
and}
) the code will no longer compile, because the 'true' branch ofif
is now represented by a compound statement. And when you put a;
after this compound statement, you finished the wholeif
statement, thus orphaning theelse
branch (hence the compilation error).One way to correct this problem is to remember not to put
;
after macro "invocations":if (<condition>) CALL_FUNCS(a) else bar(a);
This will compile and work as expected, but this is not uniform. The more elegant solution is to make sure that macro expand into a regular statement, not into a compound one. One way to achieve that is to define the macro as follows:
#define CALL_FUNCS(x) \ do { \ func1(x); \ func2(x); \ func3(x); \ } while (0)
Now this code:
if (<condition>) CALL_FUNCS(a); else bar(a);
will compile without any problems.
However, note the small but important difference between my definition of
CALL_FUNCS
and the first version in your message. I didn't put a;
after} while (0)
. Putting a;
at the end of that definition would immediately defeat the entire point of using 'do/while' and make that macro pretty much equivalent to the compound-statement version.I don't know why the author of the code you quoted in your original message put this
;
afterwhile (0)
. In this form both variants are equivalent. The whole idea behind using 'do/while' version is not to include this final;
into the macro (for the reasons that I explained above).
Assuming you have your hidden input in a jQuery object $myHidden
, you then use JavaScript (not jQuery) to get the part after ?
:
var myVal = $myHidden.val ();
var tmp = myVal.substr ( myVal.indexOf ( '?' ) + 1 ); // tmp now contains whatever is after ?
This doesn't hide the button but will prevent the user from moving forward by shutting down the window.
protected override void OnClosing(System.ComponentModel.CancelEventArgs e)
{
if (e.Cancel == false)
{
Application.Current.Shutdown();
}
}
I think you can achieve it by using the below code
Model::get(['ColumnName'])->toArray();
Adding a parameter to url fool browser to load a new page. I wrote a fuction for that purpose:
function forceReload(){
function setUrlParams(url, key, value) {
url = url.split('?');
usp = new URLSearchParams(url[1]);
usp.set(key, value);
url[1] = usp.toString();
return url.join('?');
}
window.location.href =setUrlParams(window.location.href,'_t',Date.now());
}
And you just need to call it:
forceReload();
For basic cleanup and re-analyzing you can run "OPTIMIZE TABLE ...", it will compact out the overhead in the indexes and run ANALYZE TABLE too, but it's not going to re-sort them and make them as small & efficient as they could be.
https://dev.mysql.com/doc/refman/8.0/en/optimize-table.html
However, if you want the indexes completely rebuilt for best performance, you can:
https://dev.mysql.com/doc/refman/8.0/en/rebuilding-tables.html
If you do an ALTER TABLE on a field (that is part of an index) and change its type, then it will also fully rebuild the related index(es).
I found to need this functionality quite frequently, so I'm using a home-made shell function in my .bashrc
like this which allows me to reuse it as often as I need to, with an easy to remember name:
function stringinstring()
{
case "$2" in
*"$1"*)
return 0
;;
esac
return 1
}
To test if $string1
(say, abc) is contained in $string2
(say, 123abcABC) I just need to run stringinstring "$string1" "$string2"
and check for the return value, for example
stringinstring "$str1" "$str2" && echo YES || echo NO
The character set is part of the locale, which is determined by the value of NLS_LANG
. As the documentation makes clear this is an operating system variable:
NLS_LANG
is set as an environment variable on UNIX platforms.NLS_LANG
is set in the registry on Windows platforms.
Now we can use ALTER SESSION
to change the values for a couple of locale elements, NLS_LANGUAGE and NLS_TERRITORY. But not, alas, the character set. The reason for this discrepancy is - I think - that the language and territory simply effect how Oracle interprets the stored data, e.g. whether to display a comma or a period when displaying a large number. Wheareas the character set is concerned with how the client application renders the displayed data. This information is picked up by the client application at startup time, and cannot be changed from within.
Of all of the answers here, I think they either don't work, or they're a bit of a hack (casting back to NSString). It's very likely that the correct answer to this has changed with the different beta releases.
Here is what I use:
let string: String = "hello Swift"
if string.rangeOfString("Swift") != nil
{
println("exists")
}
The "!= nil" became required with Beta 5.
To remove duplicates from a single column
Sub removeDuplicate()
'removeDuplicate Macro
Columns("A:A").Select
ActiveSheet.Range("$A$1:$A$117").RemoveDuplicates Columns:=Array(1), _
Header:=xlNo
Range("A1").Select
End Sub
if you have header then use Header:=xlYes
Increase your range as per your requirement.
you can make it to 1000 like this :
ActiveSheet.Range("$A$1:$A$1000")
More info here here
array_slice()
can be used to extract parts of the array, and the union array operator (+
) can recombine the parts.
$res = array_slice($array, 0, 3, true) +
array("my_key" => "my_value") +
array_slice($array, 3, count($array)-3, true);
This example:
$array = array(
'zero' => '0',
'one' => '1',
'two' => '2',
'three' => '3',
);
$res = array_slice($array, 0, 3, true) +
array("my_key" => "my_value") +
array_slice($array, 3, count($array) - 1, true) ;
print_r($res);
gives:
Array ( [zero] => 0 [one] => 1 [two] => 2 [my_key] => my_value [three] => 3 )
Most answers get you the current path and are context sensitive. In order to run your script from any directory, use the below snippet.
DIR="$( cd "$( dirname "$0" )" && pwd )"
By switching directories in a subshell, we can then call pwd
and get the correct path of the script regardless of context.
You can then use $DIR
as "$DIR/path/to/file"
This is the best you can do, as far as I know...
var keys = [];
for (var k in h)keys.push(k);
You could use these functions:
sp_help TableName
sp_helptext ProcedureName
select * from tbl
where exists (select 1 from all_likes where all_likes.value = substr(tbl.my_col,0, length(tbl.my_col)))
If the file name is used as a parameter to the batch file, all you need is %~z1
(1 means first parameter)
If the file name is not a parameter, you can do something like:
@echo off
setlocal
set file="test.cmd"
set maxbytesize=1000
FOR /F "usebackq" %%A IN ('%file%') DO set size=%%~zA
if %size% LSS %maxbytesize% (
echo.File is ^< %maxbytesize% bytes
) ELSE (
echo.File is ^>= %maxbytesize% bytes
)
The erase
method will be used in two ways:
Erasing single element:
vector.erase( vector.begin() + 3 ); // Deleting the fourth element
Erasing range of elements:
vector.erase( vector.begin() + 3, vector.begin() + 5 ); // Deleting from fourth element to sixth element
You can use purrr
as well, which is similar to apply
family functions:
as.data.frame(purrr::map_chr(mtcars, class))
purrr::map_df(mtcars, class)
This will return auto increment value for the MySQL database and I didn't check with other databases. Please note that if you are using any other database, the query syntax may be different.
SELECT AUTO_INCREMENT
FROM information_schema.tables
WHERE table_name = 'your_table_name'
and table_schema = 'your_database_name';
SELECT AUTO_INCREMENT
FROM information_schema.tables
WHERE table_name = 'your_table_name'
and table_schema = database();
You only need this:
JFrame frame = new JFrame();
frame.setExtendedState(JFrame.MAXIMIZED_BOTH);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
When you use the MAXIMIZED_BOTH modifier, it will max all the way across the window (height and width).
There are some that suggested using this:
frame.setUndecorated(true);
I won't recommend it, because your window won't have a header, thus no close/restore/minimize button.
You need to put package-info.java
class in package of contextPath and put below code in same class:
@javax.xml.bind.annotation.XmlSchema(namespace = "https://www.namespaceUrl.com/xml/", elementFormDefault = javax.xml.bind.annotation.XmlNsForm.QUALIFIED)
package com.test.valueobject;
I see the many answer but not get the particular idea and answer about the orientation but see the link good understand the orientation and remove the forcefully rotation for ios6.
http://www.disalvotech.com/blog/app-development/iphone/ios-6-rotation-solution/
I think it is help full.
I pad output with more digits (zeros) than I need then use tail to only use the number of digits I am looking for. Notice that you have to use '6' in tail to get the last five digits :)
for i in $(seq 1 10)
do
RESULT=$(echo 00000$i | tail -c 6)
echo $RESULT
done
Try something like this
dateLimit = (curDate, limit) => {
offset = curDate.getDate() + limit
return new Date( curDate.setDate( offset) )
}
currDate could be any date
limit could be the difference in number of day (positive for future and negative for past)
<html>
<head></head>
<body>
<canvas id="canvas" width="300" height="300"></canvas>
<script>
var sun = new Image();
var moon = new Image();
var earth = new Image();
function init() {
sun.src = 'https://mdn.mozillademos.org/files/1456/Canvas_sun.png';
moon.src = 'https://mdn.mozillademos.org/files/1443/Canvas_moon.png';
earth.src = 'https://mdn.mozillademos.org/files/1429/Canvas_earth.png';
window.requestAnimationFrame(draw);
}
function draw() {
var ctx = document.getElementById('canvas').getContext('2d');
ctx.globalCompositeOperation = 'destination-over';
ctx.clearRect(0, 0, 300, 300);
ctx.fillStyle = 'rgba(0, 0, 0, 0.4)';
ctx.strokeStyle = 'rgba(0, 153, 255, 0.4)';
ctx.save();
ctx.translate(150, 150);
// Earth
var time = new Date();
ctx.rotate(((2 * Math.PI) / 60) * time.getSeconds() + ((2 * Math.PI) / 60000) *
time.getMilliseconds());
ctx.translate(105, 0);
ctx.fillRect(10, -19, 55, 31);
ctx.drawImage(earth, -12, -12);
// Moon
ctx.save();
ctx.rotate(((2 * Math.PI) / 6) * time.getSeconds() + ((2 * Math.PI) / 6000) *
time.getMilliseconds());
ctx.translate(0, 28.5);
ctx.drawImage(moon, -3.5, -3.5);
ctx.restore();
ctx.restore();
ctx.beginPath();
ctx.arc(150, 150, 105, 0, Math.PI * 2, false);
ctx.stroke();
ctx.drawImage(sun, 0, 0, 300, 300);
window.requestAnimationFrame(draw);
}
init();
</script>
</body>
</html>