How about a Java 8 implementation? (null can be replaced by your default Enum)
public static RandomEnum getEnum(String value) {
return Arrays.stream(RandomEnum.values()).filter(m -> m.value.equals(value)).findAny().orElse(null);
}
Or you could use:
...findAny().orElseThrow(NotFoundException::new);
I have reproduced the issue in my system,
postgres=# alter user my-sys with password 'pass11';
ERROR: syntax error at or near "-"
LINE 1: alter user my-sys with password 'pass11';
^
Here is the issue,
psql is asking for input and you have given again the alter query see postgres-#
That's why it's giving error at alter
postgres-# alter user "my-sys" with password 'pass11';
ERROR: syntax error at or near "alter"
LINE 2: alter user "my-sys" with password 'pass11';
^
Solution is as simple as the error,
postgres=# alter user "my-sys" with password 'pass11';
ALTER ROLE
How about one written in pure assembler :-) Don't forget to check out the benchmarks.
I would suggest you use the below css
.showhideoverlay {
width: 100%;
height: 100%;
right: 0px;
top: 0px;
position: fixed;
background: #000;
opacity: 0.75;
}
You can then use a simple toggle function:
$('a.open').click(function() {
$('div.showhideoverlay').toggle("slow");
});
This will display the overlay menu from right to left. Alternatively, you can use the positioning for changing the effect from top or bottom, i.e. use bottom: 0;
instead of top: 0;
- you will see menu sliding from right-bottom corner.
Just treat the ES6 class name the same as you would have treated the constructor name in the ES5 way. They are one and the same.
The ES6 syntax is just syntactic sugar and creates exactly the same underlying prototype, constructor function and objects.
So, in your ES6 example with:
// animal.js
class Animal {
...
}
var a = new Animal();
module.exports = {Animal: Animal};
You can just treat Animal
like the constructor of your object (the same as you would have done in ES5). You can export the constructor. You can call the constructor with new Animal()
. Everything is the same for using it. Only the declaration syntax is different. There's even still an Animal.prototype
that has all your methods on it. The ES6 way really does create the same coding result, just with fancier/nicer syntax.
On the import side, this would then be used like this:
const Animal = require('./animal.js').Animal;
let a = new Animal();
This scheme exports the Animal constructor as the .Animal
property which allows you to export more than one thing from that module.
If you don't need to export more than one thing, you can do this:
// animal.js
class Animal {
...
}
module.exports = Animal;
And, then import it with:
const Animal = require('./animal.js');
let a = new Animal();
Try it like this (heredoc syntax):
$variable = <<<XYZ
<html>
<body>
</body>
</html>
XYZ;
echo $variable;
This can replace the MaxLength and the MinLength
[StringLength(40, MinimumLength = 10 , ErrorMessage = "Password cannot be longer than 40 characters and less than 10 characters")]
I'm working with tables adding new elements dynamically to them, and when using on(), the only way of making it works for me is using a non-dynamic parent as:
<table id="myTable">
<tr>
<td></td> // Dynamically created
<td></td> // Dynamically created
<td></td> // Dynamically created
</tr>
</table>
<input id="myButton" type="button" value="Push me!">
<script>
$('#myButton').click(function() {
$('#myTable tr').append('<td></td>');
});
$('#myTable').on('click', 'td', function() {
// Your amazing code here!
});
</script>
This is really useful because, to remove events bound with on(), you can use off(), and to use events once, you can use one().
<<
is the left-shift operator, as it is in many other languages.
Here RAM_DEPTH
will be 1
left-shifted by 8 bits
, which is equivalent to 2^8
, or 256
.
Guid.NewGuid()
, as it creates GUIDs as intended.
Guid.NewGuid()
creates an empty Guid
object, initializes it by calling CoCreateGuid
and returns the object.
new Guid()
merely creates an empty GUID (all zeros, I think).
I guess they had to make the constructor public as Guid
is a struct
.
No siblings solution:
var x = $('#xxx').parent().html();
alert(x);
Universal solution:
// no cloning necessary
var x = $('#xxx').wrapAll('<div>').parent().html();
alert(x);
Fiddle here: http://jsfiddle.net/ezmilhouse/Mv76a/
I used the cookie method:
In my manifest.js file I included a content script that only runs on my site:
"content_scripts": [
{
"matches": [
"*://*.mysite.co/*"
],
"js": ["js/mysite.js"],
"run_at": "document_idle"
}
],
in my js/mysite.js I have one line:
document.cookie = "extension_downloaded=True";
and in my index.html page I look for that cookie.
if (document.cookie.indexOf('extension_downloaded') != -1){
document.getElementById('install-btn').style.display = 'none';
}
I think this works for SQL 2000:
SELECT
CASE WHEN C.autoval IS NOT NULL THEN
'Identity'
ELSE
'Not Identity'
AND
FROM
sysobjects O
INNER JOIN
syscolumns C
ON
O.id = C.id
WHERE
O.NAME = @TableName
AND
C.NAME = @ColumnName
The back button belongs to the previous view controller, not the one currently presented on screen. To modify the back button you should update it before pushing, add viewdidload :
Swift 4:
self.navigationItem.backBarButtonItem = UIBarButtonItem(title: "", style: .plain, target: self, action: nil)
It seems that Swift 2.0 has actually introduced the String(data:encoding:)
as an String extension when you import Foundation
. I haven't found any place where this is documented, weirdly enough.
Here's a copy-pasteable little extension without using NSString
, let's cut the middle-man.
import Foundation
extension NSData
{
var byteBuffer : UnsafeBufferPointer<UInt8> { get { return UnsafeBufferPointer<UInt8>(start: UnsafeMutablePointer<UInt8>(self.bytes), count: self.length) }}
}
extension String
{
init?(data : NSData, encoding : NSStringEncoding)
{
self.init(bytes: data.byteBuffer, encoding: encoding)
}
}
// Playground test
let original = "Nymphs blitz quick vex dwarf jog"
let encoding = NSASCIIStringEncoding
if let data = original.dataUsingEncoding(encoding)
{
String(data: data, encoding: encoding)
}
This also give you access to data.byteBuffer
which is a sequence type, so all those cool operations you can do with sequences also work, like doing a reduce { $0 &+ $1 }
for a checksum.
In my previous edit, I used this method:
var buffer = Array<UInt8>(count: data.length, repeatedValue: 0x00)
data.getBytes(&buffer, length: data.length)
self.init(bytes: buffer, encoding: encoding)
The problem with this approach, is that I'm creating a copy of the information into a new array, thus, I'm duplicating the amount of bytes (specifically: encoding size * data.length
)
The fastest way is to check if there is a non letter:
if (!/[^a-zA-Z]/.test(word))
Using AngularJS
1.6.9+
There is one more incident, it also happen when you declare variable name different of module name.
var indexPageApp = angular.module('indexApp', []);
to get rid of this error,
Error: [$injector:nomod] Module 'indexPageApp' is not available! You either misspelled the module name or forgot to load it. If registering a module ensure that you specify the dependencies as the second argument.
change the module name similar to var declared name or vice versa -
var indexPageApp = angular.module('indexPageApp', []);
How about this:
try:
f = open(fname, 'rb')
except OSError:
print "Could not open/read file:", fname
sys.exit()
with f:
reader = csv.reader(f)
for row in reader:
pass #do stuff here
I realize this is an old question, but the same issue happened to me, but for a completely different reason.
It could be that cvs-dude changed certificates, so it no longer matches the certificate you have cached.
You can go to TortoiseSVN->Settings->Saved Data and click the 'Clear' button next to 'Authentication data' and then try again.
The optional SECOND argument is the index, starting at 0. So to output the index and total length of an array called 'some_list':
<div>Total Length: {{some_list.length}}</div>
<div v-for="(each, i) in some_list">
{{i + 1}} : {{each}}
</div>
If instead of a list, you were looping through an object, then the second argument is key of the key/value pair. So for the object 'my_object':
var an_id = new Vue({
el: '#an_id',
data: {
my_object: {
one: 'valueA',
two: 'valueB'
}
}
})
The following would print out the key : value pairs. (you can name 'each' and 'i' whatever you want)
<div id="an_id">
<span v-for="(each, i) in my_object">
{{i}} : {{each}}<br/>
</span>
</div>
For more info on Vue list rendering: https://vuejs.org/v2/guide/list.html
Like this:
if(borrar())
{
// Do something
}
If borrar()
returns true then do something (if it is not false).
It is a bit of hack but will do the task.
Function equalsIgnoreCase(str1 As String, str2 As String) As Boolean
equalsIgnoreCase = LCase(str1) = LCase(str2)
End Function
var oldString = "stackoverflow";
var str=oldString.replace(/stackover/g,"NO");
$scope.newString= str;
It works for me. Use an intermediate variable.
Simple:
if(pll_current_language() == 'en'){
//do your work here
}
I think this is closer to the answer you're looking for:
<input type="file">
$file = $(file);
var filename = fileElement[0].files[0].name;
You are missing, that \ is the escape character.
Look here: http://docs.python.org/reference/lexical_analysis.html at 2.4.1 "Escape Sequence"
Most importantly \n is a newline character. And \\ is an escaped escape character :D
>>> a = 'a\\\\nb'
>>> a
'a\\\\nb'
>>> print a
a\\nb
>>> a.replace('\\\\', '\\')
'a\\nb'
>>> print a.replace('\\\\', '\\')
a\nb
Same can be done with async await and arrow function
server.get('/usersList', async (req, res) => {
const users = await User.find({});
const userMap = {};
users.forEach((user) => {
userMap[user._id] = user;
});
res.send(userMap);
});
This requires changes to the frontend JS and the headers sent from the backend.
Frontend
Remove "mode":"no-cors"
in the fetch options.
fetch(
"http://example.com/api/docs",
{
// mode: "no-cors",
method: "GET"
}
)
.then(response => response.text())
.then(data => console.log(data))
Backend
When your server responds to the request, include the CORS headers specifying the origin from where the request is coming. If you don't care about the origin, specify the *
wildcard.
The raw response should include a header like this.
Access-Control-Allow-Origin: *
I think this answer needs an update, check the edit history for the old answer.
Basically, you have three deferent cases null, undefined, and undeclared, see the snippet below.
// bad-file.ts
console.log(message)
You'll get an error says that variable message
is undefined (aka undeclared), of course, the Typescript compiler shouldn't let you do that but REALLY nothing can prevent you.
// evil-file.ts
// @ts-gnore
console.log(message)
The compiler will be happy to just compile the code above. So, if you're sure that all variables are declared you can simply do that
if ( message != null ) {
// do something with the message
}
the code above will check for null
and undefined
, BUT in case the message
variable may be undeclared (for safety), you may consider the following code
if ( typeof(message) !== 'undefined' && message !== null ) {
// message variable is more than safe to be used.
}
Note: the order here typeof(message) !== 'undefined' && message !== null
is very important you have to check for the undefined
state first atherwise it will be just the same as message != null
, thanks @Jaider.
You're looking for:
animation-fill-mode: forwards;
More info on MDN and browser support list on canIuse.
You could also build out a new Gemfile and run bundle clean --force
. This will remove all other gems that aren't included in the new Gemfile.
On macOS, none of the answers worked for me. I discovered that was due to differences in how sed
works on macOS and other BSD systems compared to GNU.
In particular BSD sed
takes the -i
option but requires a suffix for the backup (but an empty suffix is permitted)
grep
version from this answer.
grep -rl 'foo' ./ | LC_ALL=C xargs sed -i '' 's/foo/bar/g'
find
version from this answer.
find . \( ! -regex '.*/\..*' \) -type f | LC_ALL=C xargs sed -i '' 's/foo/bar/g'
Don't omit the Regex to ignore .
folders if you're in a Git repo. I realized that the hard way!
That LC_ALL=C
option is to avoid getting sed: RE error: illegal byte sequence
if sed
finds a byte sequence that is not a valid UTF-8 character. That's another difference between BSD and GNU. Depending on the kind of files you are dealing with, you may not need it.
For some reason that is not clear to me, the grep
version found more occurrences than the find
one, which is why I recommend to use grep
.
According to w3.org the value attribute of the number input is defined as a floating-point number. The syntax of the floating-point number seems to only accept dots as decimal separators.
I've listed a few options below that might be helpful to you:
With the pattern attribute you can specify the allowed format with a regular expression in a HTML5 compatible way. Here you could specify that the comma character is allowed and a helpful feedback message if the pattern fails.
<input type="number" pattern="[0-9]+([,\.][0-9]+)?" name="my-num"
title="The number input must start with a number and use either comma or a dot as a decimal character."/>
Note: Cross-browser support varies a lot. It may be complete, partial or non-existant..
You could try to bind a simple callback to for example the onchange (and/or blur) event that would either replace the comma or validate all together.
Thirdly you could try to use the formnovalidate attribute on the number inputs with the intention of disabling browser validation for that field all together.
<input type="number" formnovalidate />
<input type="number" pattern="[0-9]+([,\.][0-9]+)?"
name="my-num" formnovalidate
title="The number input must start with a number and use either comma or a dot as a decimal character."/>
If you plan to create a PHP package you most likely want to put in on Packagist to make it available for other with composer.
Composer has the as naming-convention to use vendorname/package-name-is-lowercase-with-hyphens
.
If you plan to create a JS package you probably want to use npm. One of their naming conventions is to not permit upper case letters in the middle of your package name.
Therefore, I would recommend for PHP and JS packages to use lowercase-with-hyphens
and name your packages in composer or npm identically to your package on GitHub.
On top of the answers already given, to open a new tab the javascript command window.open()
can be used.
For example:
# Opens a new tab
self.driver.execute_script("window.open()")
# Switch to the newly opened tab
self.driver.switch_to.window(self.driver.window_handles[1])
# Navigate to new URL in new tab
self.driver.get("https://google.com")
# Run other commands in the new tab here
You're then able to close the original tab as follows
# Switch to original tab
self.driver.switch_to.window(self.driver.window_handles[0])
# Close original tab
self.driver.close()
# Switch back to newly opened tab, which is now in position 0
self.driver.switch_to.window(self.driver.window_handles[0])
Or close the newly opened tab
# Close current tab
self.driver.close()
# Switch back to original tab
self.driver.switch_to.window(self.driver.window_handles[0])
Hope this helps.
Please consider using some code like this:
SqlDataReader reader = command.ExecuteReader();
int numRows = 0;
DataTable dt = new DataTable();
dt.Load(reader);
numRows = dt.Rows.Count;
string attended_type = "";
for (int index = 0; index < numRows; index++)
{
attended_type = dt.Rows[indice2]["columnname"].ToString();
}
reader.Close();
You're not going to "simply" understand something complex.
WSDL is an XML-based language for describing a web service. It describes the messages, operations, and network transport information used by the service. These web services usually use SOAP, but may use other protocols.
A WSDL is readable by a program, and so may be used to generate all, or part of the client code necessary to call the web service. This is what it means to call SOAP-based web services "self-describing".
REST is not related to WSDL at all.
Your web.xml
ends with <web-app>
, but must end with </web-app>
Which by the way is almost literally what the exception tells you.
The spaces are DOSs/CMDs Problems so you should go to the Path via:
cd "c:\program files\Microsoft Virtual PC"
and then simply start VPC via:
start Virtual~1.exe -pc MY-PC -launch
~1
means the first exe
with "Virtual"
at the beginning. So if there is a "Virtual PC.exe"
and a "Virtual PC1.exe"
the first would be the Virtual~1.exe
and the second Virtual~2.exe
and so on.
Or use a VNC-Client like VirtualBox.
add padding:inherit in your absolute position
.box{_x000D_
background: red;_x000D_
position: relative;_x000D_
padding: 30px;_x000D_
width:500px;_x000D_
height:200px;_x000D_
box-sizing: border-box;_x000D_
_x000D_
_x000D_
}
_x000D_
<div class="box">_x000D_
_x000D_
<div style="position: absolute;left:0;top:0;padding: inherit">top left</div>_x000D_
<div style="position: absolute;right:0;top:0;padding: inherit">top right</div>_x000D_
<div style="text-align: center;padding: inherit">center</div>_x000D_
<div style="position: absolute;left:0;bottom:0;padding: inherit">bottom left</div>_x000D_
<div style="position: absolute;right:0;bottom:0;padding: inherit">bottom right</div>_x000D_
_x000D_
_x000D_
</div>
_x000D_
This can be done using httpPostedFileBase class returns the HttpInputStreamObject as per specified here
You should convert the stream into byte array and then you can read file content
Please refer following link
http://msdn.microsoft.com/en-us/library/system.web.httprequest.inputstream.aspx]
Hope this helps
UPDATE :
The stream that you get from your HTTP call is read-only sequential (non-seekable) and the FileStream is read/write seekable. You will need first to read the entire stream from the HTTP call into a byte array, then create the FileStream from that array.
Taken from here
// Read bytes from http input stream
BinaryReader b = new BinaryReader(file.InputStream);
byte[] binData = b.ReadBytes(file.ContentLength);
string result = System.Text.Encoding.UTF8.GetString(binData);
Either create an auto-increment id or a UNIQUE id and add it to the natural key you are talking about with the 4 fields. this will make every row in the table unique...
JavaScript does not have associative arrays. It has objects.
The following lines of code all do exactly the same thing - set the 'name' field on an object to 'orion'.
var f = new Object(); f.name = 'orion';
var f = new Object(); f['name'] = 'orion';
var f = new Array(); f.name = 'orion';
var f = new Array(); f['name'] = 'orion';
var f = new XMLHttpRequest(); f['name'] = 'orion';
It looks like you have an associative array because an Array
is also an Object
- however you're not actually adding things into the array at all; you're setting fields on the object.
Now that that is cleared up, here is a working solution to your example:
var text = '{ name = oscar }'
var dict = new Object();
// Remove {} and spaces
var cleaned = text.replace(/[{} ]/g, '');
// Split into key and value
var kvp = cleaned.split('=');
// Put in the object
dict[ kvp[0] ] = kvp[1];
alert( dict.name ); // Prints oscar.
I would recommend EasyInstall, a package management application for Python.
Once you've installed EasyInstall, you should be able to go to a command window and type:
easy_install simplejson
This may require putting easy_install.exe on your PATH first, I don't remember if the EasyInstall setup does this for you (something like C:\Python25\Scripts
).
Only works in IE
$(function(){
var xml = '<?xml version="1.0"?><foo><bar>bar</bar></foo>';
var xmlDoc=new ActiveXObject("Microsoft.XMLDOM");
xmlDoc.async="false";
xmlDoc.loadXML(xml);
alert(xmlDoc.xml);
});
Then push xmlDoc.xml to your java code.
You can also use an exit variable if you want your code to be a bit more readable:
DECLARE @Flag int = 0
DECLARE @Done bit = 0
WHILE @Done = 0 BEGIN
SET @Flag = @Flag + 1
PRINT @Flag
IF @Flag >= 5 SET @Done = 1
END
This would probably be more relevant when you have a more complicated loop and are trying to keep track of the logic. As stated loops are expensive so try and use other methods if you can.
To make sure your local branch FixForBug is not ahead of the remote branch FixForBug pull and merge the changes before pushing.
git pull origin FixForBug
git push origin FixForBug
If you control the type being used as dynamic, couldn't you return a tuple instead of a value for every property access? Something like...
public class DynamicValue<T>
{
internal DynamicValue(T value, bool exists)
{
Value = value;
Exists = exists;
}
T Value { get; private set; }
bool Exists { get; private set; }
}
Possibly a naive implementation, but if you construct one of these internally each time and return that instead of the actual value, you can check Exists
on every property access and then hit Value
if it does with value being default(T)
(and irrelevant) if it doesn't.
That said, I might be missing some knowledge on how dynamic works and this might not be a workable suggestion.
I did not want to add style to <body>
tag and <html>
tag.
.quodrant{
width: 100%;
height: 100vh;
margin: 0;
padding: 0;
}
.qtop,
.qbottom{
width: 100%;
height: 50vh;
}
.quodrant1,
.quodrant2,
.quodrant3,
.quodrant4{
display: inline;
float: left;
width: 50%;
height: 100%;
}
.quodrant1{
top: 0;
left: 50vh;
background-color: red;
}
.quodrant2{
top: 0;
left: 0;
background-color: yellow;
}
.quodrant3{
top: 50vw;
left: 0;
background-color: blue;
}
.quodrant4{
top: 50vw;
left: 50vh;
background-color: green;
}
_x000D_
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<link type="text/css" rel="stylesheet" href="main.css" />
</head>
<body>
<div class='quodrant'>
<div class='qtop'>
<div class='quodrant1'></div>
<div class='quodrant2'></div>
</div>
<div class='qbottom'>
<div class='quodrant3'></div>
<div class='quodrant4'></div>
</div>
</div>
<script type="text/javascript" src="main.js"></script>
</body>
</html>
_x000D_
Or making it looks nicer.
.quodrant{
width: 100%;
height: 100vh;
margin: 0;
padding: 0;
}
.qtop,
.qbottom{
width: 96%;
height: 46vh;
}
.quodrant1,
.quodrant2,
.quodrant3,
.quodrant4{
display: inline;
float: left;
width: 46%;
height: 96%;
border-radius: 30px;
margin: 2%;
}
.quodrant1{
background-color: #948be5;
}
.quodrant2{
background-color: #22e235;
}
.quodrant3{
background-color: #086e75;
}
.quodrant4{
background-color: #7cf5f9;
}
_x000D_
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<link type="text/css" rel="stylesheet" href="main.css" />
</head>
<body>
<div class='quodrant'>
<div class='qtop'>
<div class='quodrant1'></div>
<div class='quodrant2'></div>
</div>
<div class='qbottom'>
<div class='quodrant3'></div>
<div class='quodrant4'></div>
</div>
</div>
<script type="text/javascript" src="main.js"></script>
</body>
</html>
_x000D_
Java lacks coalesce operator, so your code with an explicit temporary is your best choice for an assignment with a single call.
You can use the result variable as your temporary, like this:
dinner = ((dinner = cage.getChicken()) != null) ? dinner : getFreeRangeChicken();
This, however, is hard to read.
Try this regex:
/^[\w&.-]+$/
Also you can use test
.
if ( pattern.test( qry ) ) {
// valid
}
Windows Subsystem for Linux did not exist when this question was asked. It gave these results in my test:
uname -s -> Linux
uname -o -> GNU/Linux
uname -r -> 4.4.0-17763-Microsoft
This means that you need uname -r to distinguish it from native Linux.
You can try this:
var b = str.match(/[^\x00-\xff]/g);
return (str.length + (!b ? 0: b.length));
It worked for me.
For the record, as far as I can tell, you had two problems:
You weren't passing a "jsonp" type specifier to your $.get
, so it was using an ordinary XMLHttpRequest. However, your browser supported CORS (Cross-Origin Resource Sharing) to allow cross-domain XMLHttpRequest if the server OKed it. That's where the Access-Control-Allow-Origin
header came in.
I believe you mentioned you were running it from a file:// URL. There are two ways for CORS headers to signal that a cross-domain XHR is OK. One is to send Access-Control-Allow-Origin: *
(which, if you were reaching Flickr via $.get
, they must have been doing) while the other was to echo back the contents of the Origin
header. However, file://
URLs produce a null Origin
which can't be authorized via echo-back.
The first was solved in a roundabout way by Darin's suggestion to use $.getJSON
. It does a little magic to change the request type from its default of "json" to "jsonp" if it sees the substring callback=?
in the URL.
That solved the second by no longer trying to perform a CORS request from a file://
URL.
To clarify for other people, here are the simple troubleshooting instructions:
$.get
and set dataType
to jsonp
.$.getJSON
and included callback=?
in the URL.http://
. Scripts running via file://
have limited support for CORS.You can use python-textops3 :
from textops import *
print('\n'.join(cat(f) | grep(search_term)))
with python-textops3 you can use unix-like commands with pipes
In addition to the recommended steps in the Vlasec answer, you can use:
/{pageId}?fields=access_token&access_token=THE_ACCESS_TOKEN_PROVIDED_BY_GRAPH_EXPLORER
Of note, use of DecimalFormat
constructor is discouraged. The javadoc for this class states:
In general, do not call the DecimalFormat constructors directly, since the NumberFormat factory methods may return subclasses other than DecimalFormat.
https://docs.oracle.com/javase/8/docs/api/java/text/DecimalFormat.html
So what you need to do is (for instance):
NumberFormat formatter = NumberFormat.getInstance(Locale.US);
formatter.setMaximumFractionDigits(2);
formatter.setMinimumFractionDigits(2);
formatter.setRoundingMode(RoundingMode.HALF_UP);
Float formatedFloat = new Float(formatter.format(floatValue));
use window.open("file2.html");
to open on new window,
or use window.location.href = "file2.html"
to open on same window.
This approach makes use of modern Javascript features like async/await
and the fetch
API. It downloads HTML as text and then feeds it to the innerHTML
of your container element.
/**
* @param {String} url - address for the HTML to fetch
* @return {String} the resulting HTML string fragment
*/
async function fetchHtmlAsText(url) {
return await (await fetch(url)).text();
}
// this is your `load_home() function`
async function loadHome() {
const contentDiv = document.getElementById("content");
contentDiv.innerHTML = await fetchHtmlAsText("home.html");
}
The await (await fetch(url)).text()
may seem a bit tricky, but it's easy to explain. It has two asynchronous steps and you could rewrite that function like this:
async function fetchHtmlAsText(url) {
const response = await fetch(url);
return await response.text();
}
See the fetch API documentation for more details.
for (Map.Entry<String, ArrayList<Integer>> entry : map.entrySet()) {
System.out.println( entry.getKey());
System.out.println( entry.getValue());//Returns the list of values
}
We strive for response times of 20 milliseconds, while some complex pages take up to 100 milliseconds. For the most complex pages, we break the page down into smaller pieces, and use the progressive display pattern to load each section. This way, some portions load quickly, even if the page takes 1 to 2 seconds to load, keeping the user engaged while the rest of the page is loading.
Another option is to use the strstr() function. Something like:
if (strlen(strstr($haystack,$needle))>0) {
// Needle Found
}
Point to note: The strstr() function is case-sensitive. For a case-insensitive search, use the stristr() function.
Use the IP instead:
DROP USER 'root'@'127.0.0.1'; GRANT ALL PRIVILEGES ON . TO 'root'@'%';
For more possibilities, see this link.
To create the root user, seeing as MySQL is local & all, execute the following from the command line (Start > Run > "cmd" without quotes):
mysqladmin -u root password 'mynewpassword'
You can use a basic prepend operation on each line:
ls -1 | while read line ; do echo $line ; done
Or you can pipe the output to sed for more complex operations:
ls -1 | sed 's/^\(.*\)$/echo \1/'
As said in Tatu Ulmanen's answer using the follow script will do the job
$('input:checkbox').removeAttr('checked');
But, as Blakomen's comment said, after version 1.6 it's better to use jQuery.prop()
instead
Note that in jQuery v1.6 and higher, you should be using .prop('checked', false) instead for greater cross-browser compatibility
$('input:checkbox').prop('checked', false);
Be careful when using jQuery.each()
it may cause performance issues. (also, avoid jQuery.find()
in those case. Use each instead)
$('input[type=checkbox]').each(function()
{
$(this).prop('checked', false);
});
If you have div next each other like this
<div id="1" style="float:left; margin-right:5px">
</div>
<div id="2" style="float:left">
</div>
This should work!
I was face same problem ..... And I got solution by using typeof()
if (typeof(value) !== 'undefined' && value != null) {
console.log('Not Undefined and Not Null')
} else {
console.log('Undefined or Null')
}
You must have to use typeof()
to identified undefined
There is no inbuilt solution to this problem, this is a problem with your design and coding pattern.
You can use publisher/subscriber pattern. For this you can use jQuery custom events or your own event mechanism.
First,
function changeHtml(selector, html) {
var elem = $(selector);
jQuery.event.trigger('htmlchanging', { elements: elem, content: { current: elem.html(), pending: html} });
elem.html(html);
jQuery.event.trigger('htmlchanged', { elements: elem, content: html });
}
Now you can subscribe divhtmlchanging/divhtmlchanged events as follow,
$(document).bind('htmlchanging', function (e, data) {
//your before changing html, logic goes here
});
$(document).bind('htmlchanged', function (e, data) {
//your after changed html, logic goes here
});
Now, you have to change your div content changes through this changeHtml()
function. So, you can monitor or can do necessary changes accordingly because bind callback data argument containing the information.
You have to change your div's html like this;
changeHtml('#mydiv', '<p>test content</p>');
And also, you can use this for any html element(s) except input element. Anyway you can modify this to use with any element(s).
As there's already an existing repository, running
git config --bool core.bare true
on the remote repository should suffice
From the core.bare documentation
If true (bare = true), the repository is assumed to be bare with no working directory associated. If this is the case a number of commands that require a working directory will be disabled, such as git-add or git-merge (but you will be able to push to it).
This setting is automatically guessed by git-clone or git-init when the repository is created. By default a repository that ends in "/.git" is assumed to be not bare (bare = false), while all other repositories are assumed to be bare (bare = true).
As @Richard pointed out above, the onClick needs to have a capital 'C'.
$('#stop').click(function() {
$('next').attr('onClick','stopMoving()');
}
AFAIK you can't do an if else
in batch like you can in other languages, it has to be nested if
's.
Using nested if
's your batch would look like
IF %F%==1 IF %C%==1(
::copying the file c to d
copy "%sourceFile%" "%destinationFile%"
) ELSE (
IF %F%==1 IF %C%==0(
::moving the file c to d
move "%sourceFile%" "%destinationFile%"
) ELSE (
IF %F%==0 IF %C%==1(
::copying a directory c from d, /s: bos olanlar hariç, /e:bos olanlar dahil
xcopy "%sourceCopyDirectory%" "%destinationCopyDirectory%" /s/e
) ELSE (
IF %F%==0 IF %C%==0(
::moving a directory
xcopy /E "%sourceMoveDirectory%" "%destinationMoveDirectory%"
rd /s /q "%sourceMoveDirectory%"
)
)
)
)
or as James suggested, chain your if
's, however I think the proper syntax is
IF %F%==1 IF %C%==1(
::copying the file c to d
copy "%sourceFile%" "%destinationFile%"
)
I got this problem after moving a project and deleting it's packages folder. Nuget was showning that MSTest.TestAdapter and MSTest.TestFramework v 1.3.2 was installed. The fix seemed to be to open VS as administrator and build After that I was able to re-open and build without having admin priviledge.
Here a full makefile example:
makefile
TARGET = prog
$(TARGET): main.o lib.a
gcc $^ -o $@
main.o: main.c
gcc -c $< -o $@
lib.a: lib1.o lib2.o
ar rcs $@ $^
lib1.o: lib1.c lib1.h
gcc -c -o $@ $<
lib2.o: lib2.c lib2.h
gcc -c -o $@ $<
clean:
rm -f *.o *.a $(TARGET)
explaining the makefile:
target: prerequisites
- the rule head$@
- means the target$^
- means all prerequisites$<
- means just the first prerequisitear
- a Linux tool to create, modify, and extract from archives see the man pages for further information. The options in this case mean:
r
- replace files existing inside the archivec
- create a archive if not already existents
- create an object-file index into the archiveTo conclude: The static library under Linux is nothing more than a archive of object files.
main.c using the lib
#include <stdio.h>
#include "lib.h"
int main ( void )
{
fun1(10);
fun2(10);
return 0;
}
lib.h the libs main header
#ifndef LIB_H_INCLUDED
#define LIB_H_INCLUDED
#include "lib1.h"
#include "lib2.h"
#endif
lib1.c first lib source
#include "lib1.h"
#include <stdio.h>
void fun1 ( int x )
{
printf("%i\n",x);
}
lib1.h the corresponding header
#ifndef LIB1_H_INCLUDED
#define LIB1_H_INCLUDED
#ifdef __cplusplus
extern “C” {
#endif
void fun1 ( int x );
#ifdef __cplusplus
}
#endif
#endif /* LIB1_H_INCLUDED */
lib2.c second lib source
#include "lib2.h"
#include <stdio.h>
void fun2 ( int x )
{
printf("%i\n",2*x);
}
lib2.h the corresponding header
#ifndef LIB2_H_INCLUDED
#define LIB2_H_INCLUDED
#ifdef __cplusplus
extern “C” {
#endif
void fun2 ( int x );
#ifdef __cplusplus
}
#endif
#endif /* LIB2_H_INCLUDED */
public static boolean isDirectory(String path) {
return path !=null && new File(path).isDirectory();
}
To answer the question directly.
<html>
<head>
<script language="javascript" type="text/javascript">
function SetFocus(InputID)
{
document.getElementById(InputID).focus();
}
</script>
</head>
<body onload="SetFocus('Box2')">
<input id="Box1" size="30" /><br/>
<input id="Box2" size="30" />
</body>
</html>
You can add hash info in next page url to move browser at specific position(any html element), after page is loaded.
This is can done in this way:
add hash in the url of next_page : example.com#hashkey
$( document ).ready(function() {
##get hash code at next page
var hashcode = window.location.hash;
## move page to any specific position of next page(let that is div with id "hashcode")
$('html,body').animate({scrollTop: $('div#'+hascode).offset().top},'slow');
});
Use toFixed
to convert it to a string with some decimal places shaved off, and then convert it back to a number.
+(0.1 + 0.2).toFixed(12) // 0.3
It looks like IE's toFixed
has some weird behavior, so if you need to support IE something like this might be better:
Math.round((0.1 + 0.2) * 1e12) / 1e12
You can't use IF like that. You can do what you want with AND and OR:
SELECT t.first_name,
t.last_name,
t.employid,
t.status
FROM employeetable t
WHERE ((status_flag = STATUS_ACTIVE AND t.status = 'A')
OR (status_flag = STATUS_INACTIVE AND t.status = 'T')
OR (source_flag = SOURCE_FUNCTION AND t.business_unit = 'production')
OR (source_flag = SOURCE_USER AND t.business_unit = 'users'))
AND t.first_name LIKE firstname
AND t.last_name LIKE lastname
AND t.employid LIKE employeeid;
You can also use the string indexOf without creating any arrays.
The second parameter is the index to start looking for the next match.
function nthIndex(str, pat, n){
var L= str.length, i= -1;
while(n-- && i++<L){
i= str.indexOf(pat, i);
if (i < 0) break;
}
return i;
}
var s= "XYZ 123 ABC 456 ABC 789 ABC";
nthIndex(s,'ABC',3)
/* returned value: (Number)
24
*/
Big one I see that causes this is filename. If you have a SPACE then any number such as 'Site 2' the file path with look like something/Site%202/index.html This is because spaces or rendered as %20, and if another number is immediately following that it will try to read it as %202. Fix is you never use spaces in your filenames.
Use procmon to define your problem.
Other approach for Vanilla JavaScript:
for(var o of document.querySelectorAll('#models > option')) {
o.remove()
}
The problem is on this line:
oShell.run "cmd.exe /C copy "S:Claims\Sound.wav" "C:\WINDOWS\Media\Sound.wav"
Your first quote next to "S:Claims" ends the string; you need to escape the quotes around your files with a second quote, like this:
oShell.run "cmd.exe /C copy ""S:\Claims\Sound.wav"" ""C:\WINDOWS\Media\Sound.wav"" "
You also have a typo in S:Claims\Sound.wav
, should be S:\Claims\Sound.wav
.
I also assume the apostrophe before Dim oShell
and after Set oShell = Nothing
are typos as well.
Here's probably what you are looking for: php-get-url-query-string. You can combine it with other suggested $_SERVER
parameters.
Late to answer, but no-one has specified that css property with dash won't work in object declaration in jquery:
.css({margin-left:'200px'});//won't work
.css({marginLeft:'200px'});//works
So, do not forget to use quotes if you prefer to use dash style property in jquery code.
.css({'margin-left':'200px'});//works
The other answers will break if output of command contains spaces (which is rather frequent) or glob characters like *
, ?
, [...]
.
To get the output of a command in an array, with one line per element, there are essentially 3 ways:
With Bash=4 use mapfile
—it's the most efficient:
mapfile -t my_array < <( my_command )
Otherwise, a loop reading the output (slower, but safe):
my_array=()
while IFS= read -r line; do
my_array+=( "$line" )
done < <( my_command )
As suggested by Charles Duffy in the comments (thanks!), the following might perform better than the loop method in number 2:
IFS=$'\n' read -r -d '' -a my_array < <( my_command && printf '\0' )
Please make sure you use exactly this form, i.e., make sure you have the following:
IFS=$'\n'
on the same line as the read
statement: this will only set the environment variable IFS
for the read
statement only. So it won't affect the rest of your script at all. The purpose of this variable is to tell read
to break the stream at the EOL character \n
.-r
: this is important. It tells read
to not interpret the backslashes as escape sequences.-d ''
: please note the space between the -d
option and its argument ''
. If you don't leave a space here, the ''
will never be seen, as it will disappear in the quote removal step when Bash parses the statement. This tells read
to stop reading at the nil byte. Some people write it as -d $'\0'
, but it is not really necessary. -d ''
is better.-a my_array
tells read
to populate the array my_array
while reading the stream.printf '\0'
statement after my_command
, so that read
returns 0
; it's actually not a big deal if you don't (you'll just get an return code 1
, which is okay if you don't use set -e
– which you shouldn't anyway), but just bear that in mind. It's cleaner and more semantically correct. Note that this is different from printf ''
, which doesn't output anything. printf '\0'
prints a null byte, needed by read
to happily stop reading there (remember the -d ''
option?).If you can, i.e., if you're sure your code will run on Bash=4, use the first method. And you can see it's shorter too.
If you want to use read
, the loop (method 2) might have an advantage over method 3 if you want to do some processing as the lines are read: you have direct access to it (via the $line
variable in the example I gave), and you also have access to the lines already read (via the array ${my_array[@]}
in the example I gave).
Note that mapfile
provides a way to have a callback eval'd on each line read, and in fact you can even tell it to only call this callback every N lines read; have a look at help mapfile
and the options -C
and -c
therein. (My opinion about this is that it's a little bit clunky, but can be used sometimes if you only have simple things to do — I don't really understand why this was even implemented in the first place!).
Now I'm going to tell you why the following method:
my_array=( $( my_command) )
is broken when there are spaces:
$ # I'm using this command to test:
$ echo "one two"; echo "three four"
one two
three four
$ # Now I'm going to use the broken method:
$ my_array=( $( echo "one two"; echo "three four" ) )
$ declare -p my_array
declare -a my_array='([0]="one" [1]="two" [2]="three" [3]="four")'
$ # As you can see, the fields are not the lines
$
$ # Now look at the correct method:
$ mapfile -t my_array < <(echo "one two"; echo "three four")
$ declare -p my_array
declare -a my_array='([0]="one two" [1]="three four")'
$ # Good!
Then some people will then recommend using IFS=$'\n'
to fix it:
$ IFS=$'\n'
$ my_array=( $(echo "one two"; echo "three four") )
$ declare -p my_array
declare -a my_array='([0]="one two" [1]="three four")'
$ # It works!
But now let's use another command, with globs:
$ echo "* one two"; echo "[three four]"
* one two
[three four]
$ IFS=$'\n'
$ my_array=( $(echo "* one two"; echo "[three four]") )
$ declare -p my_array
declare -a my_array='([0]="* one two" [1]="t")'
$ # What?
That's because I have a file called t
in the current directory… and this filename is matched by the glob [three four]
… at this point some people would recommend using set -f
to disable globbing: but look at it: you have to change IFS
and use set -f
to be able to fix a broken technique (and you're not even fixing it really)! when doing that we're really fighting against the shell, not working with the shell.
$ mapfile -t my_array < <( echo "* one two"; echo "[three four]")
$ declare -p my_array
declare -a my_array='([0]="* one two" [1]="[three four]")'
here we're working with the shell!
I was trying to organize my vue app code, and came across this question , since I have a lot of logic in my component and can not use other sub-coponents , it makes sense to use many functions in a separate js file and call them in the vue file, so here is my attempt
1)The Component (.vue file)
//MyComponent.vue file
<template>
<div>
<div>Hello {{name}}</div>
<button @click="function_A">Read Name</button>
<button @click="function_B">Write Name</button>
<button @click="function_C">Reset</button>
<div>{{message}}</div>
</div>
</template>
<script>
import Mylib from "./Mylib"; // <-- import
export default {
name: "MyComponent",
data() {
return {
name: "Bob",
message: "click on the buttons"
};
},
methods: {
function_A() {
Mylib.myfuncA(this); // <---read data
},
function_B() {
Mylib.myfuncB(this); // <---write data
},
function_C() {
Mylib.myfuncC(this); // <---write data
}
}
};
</script>
2)The External js file
//Mylib.js
let exports = {};
// this (vue instance) is passed as that , so we
// can read and write data from and to it as we please :)
exports.myfuncA = (that) => {
that.message =
"you hit ''myfuncA'' function that is located in Mylib.js and data.name = " +
that.name;
};
exports.myfuncB = (that) => {
that.message =
"you hit ''myfuncB'' function that is located in Mylib.js and now I will change the name to Nassim";
that.name = "Nassim"; // <-- change name to Nassim
};
exports.myfuncC = (that) => {
that.message =
"you hit ''myfuncC'' function that is located in Mylib.js and now I will change the name back to Bob";
that.name = "Bob"; // <-- change name to Bob
};
export default exports;
3)see it in action : https://codesandbox.io/s/distracted-pare-vuw7i?file=/src/components/MyComponent.vue
after getting more experience with Vue , I found out that you could use mixins too to split your code into different files and make it easier to code and maintain see https://vuejs.org/v2/guide/mixins.html
I would do something like this:
Select count(*), productid
from products
where keyword = '$keyword'
group by productid
that will give you a list like
count(*) productid
----------------------
5 12345
3 93884
9 93493
This allows you to see how many of each distinct productid ID is associated with the keyword.
Use regex.test()
if all you want is a boolean result:
console.log(/^([a-z0-9]{5,})$/.test('abc1')); // false_x000D_
_x000D_
console.log(/^([a-z0-9]{5,})$/.test('abc12')); // true_x000D_
_x000D_
console.log(/^([a-z0-9]{5,})$/.test('abc123')); // true
_x000D_
...and you could remove the ()
from your regexp since you've no need for a capture.
remove the .git
folder in your project root folder
if you installed submodules and want to remove their git, also remove .git
from submodules folders
This is similar to some of the other answers, but is compact and avoids the conversion to dictionary if you already have a list.
Given a ComboBox
"combobox" on a windows form and a class SomeClass
with the string
type property Name
,
List<SomeClass> list = new List<SomeClass>();
combobox.DisplayMember = "Name";
combobox.DataSource = list;
Which means that combobox.SelectedItem
is a SomeClass
object from list
, and each item in combobox
will be displayed using its property Name
.
You can read the selected item using
SomeClass someClass = (SomeClass)combobox.SelectedItem;
The CGRectZero
constant is equal to a rectangle at position (0,0)
with zero width and height. This is fine to use, and actually preferred, if you use AutoLayout, since AutoLayout will then properly place the view.
But, I expect you do not use AutoLayout. So the most simple solution is to specify the size of the custom view by providing a frame explicitly:
customView = MyCustomView(frame: CGRect(x: 0, y: 0, width: 200, height: 50))
self.view.addSubview(customView)
Note that you also need to use addSubview
otherwise your view is not added to the view hierarchy.
install dependencies on Debian/Ubuntu:
$ sudo apt-get install python-pip python-matplotlib
install multi-mechanize from PyPI
using Pip
:
$ sudo pip install -U multi-mechanize
Their is a more easily way to do that without regex. you have just to select the whole text. then go to: Edit--> Permute Lines --> Unique.
That's all. and all blank lines will be deleted.
This function creates a temporary form, then send data using jQuery :
function postToIframe(data,url,target){
$('body').append('<form action="'+url+'" method="post" target="'+target+'" id="postToIframe"></form>');
$.each(data,function(n,v){
$('#postToIframe').append('<input type="hidden" name="'+n+'" value="'+v+'" />');
});
$('#postToIframe').submit().remove();
}
target is the 'name' attr of the target iFrame, and data is a JS object :
data={last_name:'Smith',first_name:'John'}
VBA is not VB/VB.NET
The correct reference to use is Do..Loop Statement (VBA). Also see the article Excel VBA For, Do While, and Do Until. One way to write this is:
Do While counter < 20
counter = counter + 1
Loop
(But a For..Next might be more appropriate here.)
Happy coding.
If you still have problems with Eclipse finding your files, you might try the following:
Verify the default working directory by printing the following in your main:
System.out.println("Working dir: " + System.getProperty("user.dir"));
For (1) above, I put the following debugging code around the specific file I was trying to access:
File imageFile = new File(source);
System.out.println("Canonical path of target image: " + imageFile.getCanonicalPath());
if (!imageFile.exists()) {
System.out.println("file " + imageFile + " does not exist");
}
image = ImageIO.read(imageFile);
For whatever reason, I ended up ignoring most of the other posts telling me to put the image files in "src" or some other variant, as I verified that the system was looking at the root of the Eclipse project directory hierarchy (e.g., $HOME/workspace/myProject).
Having the images in src/ (which is automatically copied to bin/) didn't do the trick on Eclipse Luna.
Coming late to the party, but I found this fantastic step-by-step guide on getting control of your SQLExpress instance if you don't have your sa password. I used this process to not only reset my sa password, but I also added my domain account to all the available server roles. I can now create databases, alter logins, do bulk operations, backups/restores, etc using my normal login.
To summarize, you use SQL Server Configuration Manager to put your instance into single-user mode. This elevates you to sysadmin when you connect, allowing you the ability to set everything up.
Edit: I've copied the steps below - kudos to the original author of the link above.
int *p=(int *)0x1234 = 10; //0x1234 is the memory address and value 10 is assigned in that address
unsigned int *ptr=(unsigned int *)0x903jf = 20;//0x903j is memory address and value 20 is assigned
Basically in Embedded platform we are using directly addresses instead of names
Petar Ivanov's answer to replace a character at a specific index in a string question
String are immutable in Java. You can't change them.
You need to create a new string with the character replaced.
String myName = "domanokz";
String newName = myName.substring(0,4)+'x'+myName.substring(5);
Or you can use a StringBuilder:
StringBuilder myName = new StringBuilder("domanokz");
myName.setCharAt(4, 'x');
System.out.println(myName);
HashMap
is unordered per the second line of the documentation:
This class makes no guarantees as to the order of the map; in particular, it does not guarantee that the order will remain constant over time.
Perhaps you can do as aix suggests and use a LinkedHashMap
, or another ordered collection. This link can help you find the most appropriate collection to use.
Of C, A & P (Consistency, Availability & Partition tolerance) which 2 are more important to you? Quick reference, the Visual Guide To NoSQL Systems
A blog post, Cassandra vs MongoDB vs CouchDB vs Redis vs Riak vs HBase vs Membase vs Neo4j comparison has 'Best used' scenarios for each NoSQL database compared. Quoting the link,
A recent (Feb 2012) and more comprehensive comparison by Riyad Kalla,
A blog post (Oct 2011) by someone who tried both, A MongoDB Guy Learns CouchDB commented on the CouchDB's paging being not as useful.
A dated (Jun 2009) benchmark by Kristina Chodorow (part of team behind MongoDB),
I'd go for MongoDB.
Hope it helps.
Personally I'd go with AJAX.
If you cannot switch to @Ajax...
helpers, I suggest you to add a couple of properties in your model
public bool TriggerOnLoad { get; set; }
public string TriggerOnLoadMessage { get; set: }
Change your view to a strongly typed Model via
@using MyModel
Before returning the View, in case of successfull creation do something like
MyModel model = new MyModel();
model.TriggerOnLoad = true;
model.TriggerOnLoadMessage = "Object successfully created!";
return View ("Add", model);
then in your view, add this
@{
if (model.TriggerOnLoad) {
<text>
<script type="text/javascript">
alert('@Model.TriggerOnLoadMessage');
</script>
</text>
}
}
Of course inside the tag you can choose to do anything you want, event declare a jQuery ready function:
$(document).ready(function () {
alert('@Model.TriggerOnLoadMessage');
});
Please remember to reset the Model properties upon successfully alert emission.
Another nice thing about MVC is that you can actually define an EditorTemplate for all this, and then use it in your view via:
@Html.EditorFor (m => m.TriggerOnLoadMessage)
But in case you want to build up such a thing, maybe it's better to define your own C# class:
class ClientMessageNotification {
public bool TriggerOnLoad { get; set; }
public string TriggerOnLoadMessage { get; set: }
}
and add a ClientMessageNotification
property in your model. Then write EditorTemplate / DisplayTemplate for the ClientMessageNotification
class and you're done. Nice, clean, and reusable.
There are two important concepts in multithreading environment:
The volatile
keyword eradicates visibility problems, but it does not deal with atomicity. volatile
will prevent the compiler from reordering instructions which involve a write and a subsequent read of a volatile variable; e.g. k++
.
Here, k++
is not a single machine instruction, but three:
So, even if you declare a variable as volatile
, this will not make this operation atomic; this means another thread can see a intermediate result which is a stale or unwanted value for the other thread.
On the other hand, AtomicInteger
, AtomicReference
are based on the Compare and swap instruction. CAS has three operands: a memory location V
on which to operate, the expected old value A
, and the new value B
. CAS
atomically updates V
to the new value B
, but only if the value in V
matches the expected old value A
; otherwise, it does nothing. In either case, it returns the value currently in V
. The compareAndSet()
methods of AtomicInteger
and AtomicReference
take advantage of this functionality, if it is supported by the underlying processor; if it is not, then the JVM implements it via spin lock.
I also found that when I uninstalled nunit v3.2.1, the nunit framework reference for v3.2.1 was still in my project in solution explorer. Solution Explorer > ProjectName > References
If you right click it will show the version. Remove this Then Right click on References > Add Reference.
Search for the version 2.x version and add then rebuild solution.
That worked for me!
You are not actually changing the function.
onClick
is assigned to a function (Which is a reference to something, a function pointer in this case). The values passed to it don't matter and cannot be utilised in any manner.
Another problem is your variable color
seems out of nowhere.
Ideally, inside the function you should put this logic and let it figure out what to write. (on/off etc etc)
Open in google sheets and then download from sheets as CSV and then reupload to drive. Then you can Open CSV file from python.
Normal ways would be Integer.toString(i)
or String.valueOf(i)
.
The concatenation will work, but it is unconventional and could be a bad smell as it suggests the author doesn't know about the two methods above (what else might they not know?).
Java has special support for the + operator when used with strings (see the documentation) which translates the code you posted into:
StringBuilder sb = new StringBuilder();
sb.append("");
sb.append(i);
String strI = sb.toString();
at compile-time. It's slightly less efficient (sb.append()
ends up calling Integer.getChars()
, which is what Integer.toString()
would've done anyway), but it works.
To answer Grodriguez's comment: ** No, the compiler doesn't optimise out the empty string in this case - look:
simon@lucifer:~$ cat TestClass.java
public class TestClass {
public static void main(String[] args) {
int i = 5;
String strI = "" + i;
}
}
simon@lucifer:~$ javac TestClass.java && javap -c TestClass
Compiled from "TestClass.java"
public class TestClass extends java.lang.Object{
public TestClass();
Code:
0: aload_0
1: invokespecial #1; //Method java/lang/Object."<init>":()V
4: return
public static void main(java.lang.String[]);
Code:
0: iconst_5
1: istore_1
Initialise the StringBuilder:
2: new #2; //class java/lang/StringBuilder
5: dup
6: invokespecial #3; //Method java/lang/StringBuilder."<init>":()V
Append the empty string:
9: ldc #4; //String
11: invokevirtual #5; //Method java/lang/StringBuilder.append:
(Ljava/lang/String;)Ljava/lang/StringBuilder;
Append the integer:
14: iload_1
15: invokevirtual #6; //Method java/lang/StringBuilder.append:
(I)Ljava/lang/StringBuilder;
Extract the final string:
18: invokevirtual #7; //Method java/lang/StringBuilder.toString:
()Ljava/lang/String;
21: astore_2
22: return
}
There's a proposal and ongoing work to change this behaviour, targetted for JDK 9.
{}
Curly braces
And some words about last post
$x[4] = 'd'; // it works
$x{4} = 'd'; // it works
$echo $x[4]; // it works
$echo $x{4}; // it works
$x[] = 'e'; // it works
$x{} = 'e'; // does not work
$x = [1, 2]; // it works
$x = {1, 2}; // does not work
echo "${x[4]}"; // it works
echo "${x{4}}"; // does not work
echo "{$x[4]}"; // it works
echo "{$x{4}}"; // it works
Properties prop = new Properties();
prop.load(...); // FileInputStream
prop.setProperty("key", "value");
prop.store(...); // FileOutputStream
You have to use double double quotes to escape the double quotes (lol):
g = "abcd """ & a & """"
You can use node.className
like so:
document.getElementById('foo').className = 'bar';
This should work in IE5.5 and up according to PPK.
dict((el,0) for el in a)
will work well.
Python 2.7 and above also support dict comprehensions. That syntax is {el:0 for el in a}
.
Side-by-side view of how the array and $@ are practically the same.
Code:
#!/bin/bash
echo "Dollar-1 : $1"
echo "Dollar-2 : $2"
echo "Dollar-3 : $3"
echo "Dollar-AT: $@"
echo ""
myArray=( "$@" )
echo "A Val 0: ${myArray[0]}"
echo "A Val 1: ${myArray[1]}"
echo "A Val 2: ${myArray[2]}"
echo "A All Values: ${myArray[@]}"
Input:
./bash-array-practice.sh 1 2 3 4
Output:
Dollar-1 : 1
Dollar-2 : 2
Dollar-3 : 3
Dollar-AT: 1 2 3 4
A Val 0: 1
A Val 1: 2
A Val 2: 3
A All Values: 1 2 3 4
hadoop version 2.3.33:
hadoop fs -dus /path/to/dir | awk '{print $2/1024**3 " G"}'
It is under View -> Render Whitespace.
?? Sometimes the menu item shows that it is currently active but you can's see white spaces. You should uncheck and check again to make it work. It is a known bug
In the mac environment, you can search for any menu option under the Help menu, then it will open the exact menu path you are looking for. For example, searching for whitespace result in this:
I usually expand each log out into it's own channel and then to a separate log file, certainly makes things easier when you are trying to debug specific issues. So my logging section looks like the following:
logging {
channel default_file {
file "/var/log/named/default.log" versions 3 size 5m;
severity dynamic;
print-time yes;
};
channel general_file {
file "/var/log/named/general.log" versions 3 size 5m;
severity dynamic;
print-time yes;
};
channel database_file {
file "/var/log/named/database.log" versions 3 size 5m;
severity dynamic;
print-time yes;
};
channel security_file {
file "/var/log/named/security.log" versions 3 size 5m;
severity dynamic;
print-time yes;
};
channel config_file {
file "/var/log/named/config.log" versions 3 size 5m;
severity dynamic;
print-time yes;
};
channel resolver_file {
file "/var/log/named/resolver.log" versions 3 size 5m;
severity dynamic;
print-time yes;
};
channel xfer-in_file {
file "/var/log/named/xfer-in.log" versions 3 size 5m;
severity dynamic;
print-time yes;
};
channel xfer-out_file {
file "/var/log/named/xfer-out.log" versions 3 size 5m;
severity dynamic;
print-time yes;
};
channel notify_file {
file "/var/log/named/notify.log" versions 3 size 5m;
severity dynamic;
print-time yes;
};
channel client_file {
file "/var/log/named/client.log" versions 3 size 5m;
severity dynamic;
print-time yes;
};
channel unmatched_file {
file "/var/log/named/unmatched.log" versions 3 size 5m;
severity dynamic;
print-time yes;
};
channel queries_file {
file "/var/log/named/queries.log" versions 3 size 5m;
severity dynamic;
print-time yes;
};
channel network_file {
file "/var/log/named/network.log" versions 3 size 5m;
severity dynamic;
print-time yes;
};
channel update_file {
file "/var/log/named/update.log" versions 3 size 5m;
severity dynamic;
print-time yes;
};
channel dispatch_file {
file "/var/log/named/dispatch.log" versions 3 size 5m;
severity dynamic;
print-time yes;
};
channel dnssec_file {
file "/var/log/named/dnssec.log" versions 3 size 5m;
severity dynamic;
print-time yes;
};
channel lame-servers_file {
file "/var/log/named/lame-servers.log" versions 3 size 5m;
severity dynamic;
print-time yes;
};
category default { default_file; };
category general { general_file; };
category database { database_file; };
category security { security_file; };
category config { config_file; };
category resolver { resolver_file; };
category xfer-in { xfer-in_file; };
category xfer-out { xfer-out_file; };
category notify { notify_file; };
category client { client_file; };
category unmatched { unmatched_file; };
category queries { queries_file; };
category network { network_file; };
category update { update_file; };
category dispatch { dispatch_file; };
category dnssec { dnssec_file; };
category lame-servers { lame-servers_file; };
};
Hope this helps.
You can open multiple windows on single click... Try this..
<a href="http://--"
onclick=" window.open('http://--','','width=700,height=700');
window.open('http://--','','width=700,height=500'); ..// add more"
>Click Here</a>`
Do you want to iterate over characters or words?
For words, you'll have to split the words first, such as
for index, word in enumerate(loopme.split(" ")):
print "CURRENT WORD IS", word, "AT INDEX", index
This prints the index of the word.
For the absolute character position you'd need something like
chars = 0
for index, word in enumerate(loopme.split(" ")):
print "CURRENT WORD IS", word, "AT INDEX", index, "AND AT CHARACTER", chars
chars += len(word) + 1
How about like this
public static MvcHtmlString HiddenFor<TModel, TProperty>(this HtmlHelper<TModel> htmlHelper, Expression<Func<TModel, TProperty>> expression, object value, object htmlAttributes)
{
return HiddenFor(htmlHelper, expression, value, HtmlHelper.AnonymousObjectToHtmlAttributes(htmlAttributes));
}
public static MvcHtmlString HiddenFor<TModel, TProperty>(this HtmlHelper<TModel> htmlHelper, Expression<Func<TModel, TProperty>> expression, object value, IDictionary<string, object> htmlAttributes)
{
return htmlHelper.Hidden(ExpressionHelper.GetExpressionText(expression), value, htmlAttributes);
}
Use it like this
@Html.HiddenFor(customerId => reviewModel.CustomerId, Site.LoggedInCustomerId, null)
Use a SortedSet (TreeSet is the default one):
SortedSet<String> set=new TreeSet<String>();
set.add("12");
set.add("15");
set.add("5");
List<String> list=new ArrayList<String>(set);
No extra sorting code needed.
Oh, I see you want a different sort order. Supply a Comparator to the TreeSet:
new TreeSet<String>(Comparator.comparing(Integer::valueOf));
Now your TreeSet will sort Strings in numeric order (which implies that it will throw exceptions if you supply non-numeric strings)
Reference:
TreeSet
Comparator
And
has precedence over Or
, so, even if a <=> a1 Or a2
Where a And b
is not the same as
Where a1 Or a2 And b,
because that would be Executed as
Where a1 Or (a2 And b)
and what you want, to make them the same, is the following (using parentheses to override rules of precedence):
Where (a1 Or a2) And b
Here's an example to illustrate:
Declare @x tinyInt = 1
Declare @y tinyInt = 0
Declare @z tinyInt = 0
Select Case When @x=1 OR @y=1 And @z=1 Then 'T' Else 'F' End -- outputs T
Select Case When (@x=1 OR @y=1) And @z=1 Then 'T' Else 'F' End -- outputs F
For those who like to consult references (in alphabetic order):
Edit this file: sudo nano /etc/default/zabbix-server
Adjust the START
property to yes
:
START=yes
Then try to run Zabbix again: sudo service zabbix-server start
dovescrywolf gave tip as a comment on article linked by Davide Inglima
It was was very useful for me on MacOS.
Open Termnal (bash console) and do below things:
$ pwd /Users/You/YourEclipseInstalationDirectory
$ cd Eclipse.app/Contents/MacOS/
$ echo "-Duser.name=Your Name" >> eclipse.ini
$ cat eclipse.ini
Close Terminal and start/open Eclipse again.
If you have a github account and don't want to download software, you can export to github, then download a zip from github.
Step 1: We need Microsoft.AspNetCore.Cors package in our project. For installing go to Tools -> NuGet Package Manager -> Manage NuGet Packages for Solution. Search for Microsoft.AspNetCore.Cors and install the package.
Step 2: We need to inject CORS into the container so that it can be used by the application. In Startup.cs class, let’s go to the ConfigureServices method and register CORS.
So, in our server app, let’s go to Controllers -> HomeController.cs and add the EnableCors decorator to the Index method (Or your specific controller and action):
For More Detail Click Here
For Track the location every 10 mins(based on requirement) please follow this link it is working fine without any issues
https://github.com/safetysystemtechnology/location-tracker-background
optimized from spacedrop answer ...
ls $(pwd)/*
and you can use ls options
ls -alrt $(pwd)/*
This is a sledgehammer approach to replacing raw UNICODE with HTML. I haven't seen any other place to put this solution, but I assume others have had this problem.
Apply this str_replace function to the RAW JSON, before doing anything else.
function unicode2html($str){
$i=65535;
while($i>0){
$hex=dechex($i);
$str=str_replace("\u$hex","&#$i;",$str);
$i--;
}
return $str;
}
This won't take as long as you think, and this will replace ANY unicode with HTML.
Of course this can be reduced if you know the unicode types that are being returned in the JSON.
For example my code was getting lots of arrows and dingbat unicode. These are between 8448 an 11263. So my production code looks like:
$i=11263;
while($i>08448){
...etc...
You can look up the blocks of Unicode by type here: http://unicode-table.com/en/ If you know you're translating Arabic or Telegu or whatever, you can just replace those codes, not all 65,000.
You could apply this same sledgehammer to simple encoding:
$str=str_replace("\u$hex",chr($i),$str);
$array = str_split("$string");
will actuall work pretty fine, BUT if you want to preserve the special characters in that string, and you want to do some manipulation with them, THAN I would use
do {
$array[] = mb_substr( $string, 0, 1, 'utf-8' );
} while ( $string = mb_substr( $string, 1, mb_strlen( $string ), 'utf-8' ) );
because for some of mine personal uses, it has been shown to be more reliable when there is an issue with special characters
Your mistake is using new DateTime()
, which returns January 1, 0001 at 00:00:00.000 instead of current date and time. The correct syntax to get current date and time is DateTime.Now, so change this:
String timeStamp = GetTimestamp(new DateTime());
to this:
String timeStamp = GetTimestamp(DateTime.Now);
Just to add on these answers is that, mod_php is the oldest and slowest method available in HTTPD server to use PHP. It is not recommended, unless you are running old versions of Apache HTTPD and PHP. php-fpm and proxy_cgi are the preferred methods.
well, why don't you (get rid of sidebar and) squeeze the table so it is without show/hide effect? It looks odd to me now. The table is too robust.
Otherwise I think scunliffe's suggestion should do it. Or if you wish, you can just set the exact width of table and set either percentage or pixel width for table cells.
check out
http://www.thesitewizard.com/general/set-cron-job.shtml
for the specifics of setting your crontab directives.
45 10 * * *
will run in the 10th hour, 45th minute of every day.
for midnight... maybe
0 0 * * *
I had the same issue and here is how I manage to pass through:
In your case you have addToCount()
which is called. now to pass down a param when user clicks, you can say @click="addToCount(item.contactID)"
in your function implementation you can receive the params like:
addToCount(paramContactID){
// the paramContactID contains the value you passed into the function when you called it
// you can do what you want to do with the paramContactID in here!
}
Typically for a use case which involves a sequence of pages and in the final stage or page we post the data to the server. In this scenario we need to maintain the state. In the below snippet we maintain the state on the client side
As mentioned in the above post. The session is created using the factory recipe.
Client side session can be maintained using the value provider recipe as well.
Please refer to my post for the complete details. session-tracking-in-angularjs
Let's take an example of a shopping cart which we need to maintain across various pages / angularjs controller.
In typical shopping cart we buy products on various product / category pages and keep updating the cart. Here are the steps.
Here we create the custom injectable service having a cart inside using the "value provider recipe".
'use strict';
function Cart() {
return {
'cartId': '',
'cartItem': []
};
}
// custom service maintains the cart along with its behavior to clear itself , create new , delete Item or update cart
app.value('sessionService', {
cart: new Cart(),
clear: function () {
this.cart = new Cart();
// mechanism to create the cart id
this.cart.cartId = 1;
},
save: function (session) {
this.cart = session.cart;
},
updateCart: function (productId, productQty) {
this.cart.cartItem.push({
'productId': productId,
'productQty': productQty
});
},
//deleteItem and other cart operations function goes here...
});
Another way by using ajax method:
View:
@Html.TextBox("txtValue", null, new { placeholder = "Input value" })
<input type="button" value="Start" id="btnStart" />
<script>
$(function () {
$('#btnStart').unbind('click');
$('#btnStart').on('click', function () {
$.ajax({
url: "/yourControllerName/yourMethod",
type: 'POST',
contentType: "application/json; charset=utf-8",
dataType: 'json',
data: JSON.stringify({
txtValue: $("#txtValue").val()
}),
async: false
});
});
});
</script>
Controller:
[HttpPost]
public EmptyResult YourMethod(string txtValue)
{
// do what you want with txtValue
...
}
The recommended idiom to sort lists of values using expensive-to-compute keys is to the so-called "decorated pattern". It consists simply in building a list of (key, value) tuples from the original list, and sort that list. Then it is trivial to eliminate the keys and get the list of sorted values:
>>> original_list = ['a', 'b', 'A', 'B']
>>> decorated = [(s.lower(), s) for s in original_list]
>>> decorated.sort()
>>> sorted_list = [s[1] for s in decorated]
>>> sorted_list
['A', 'a', 'B', 'b']
Or if you like one-liners:
>>> sorted_list = [s[1] for s in sorted((s.lower(), s) for s in original_list)]
>>> sorted_list
['A', 'a', 'B', 'b']
If you really worry about the cost of calling lower(), you can just store tuples of (lowered string, original string) everywhere. Tuples are the cheapest kind of containers in Python, they are also hashable so they can be used as dictionary keys, set members, etc.
I recomend use http-request built on apache http api.
HttpRequest<String> httpRequest = HttpRequestBuilder.createPost("http://www.example.com/page.php", String.class)
.responseDeserializer(ResponseDeserializer.ignorableDeserializer()).build();
public void send(){
String response = httpRequest.execute("id", "10").get();
}
You can use this to disabled the Hyperlink of asp.net or link buttons in html.
$("td > a").attr("disabled", "disabled").on("click", function() {
return false;
});
You can use the stacking index of the div to make it appear on top of anything else. Make it a larger value that other elements and it well be on top of others.
use z-index
property. See Specifying the stack level: the 'z-index' property and
Elaborate description of Stacking Contexts
Something like
#divOnTop { z-index: 1000; }
<div id="divOnTop">I am on top</div>
What you have to look out for will be IE6. In IE 6 some elements like <select>
will be placed on top of an element with z-index value higher than the <select>
. You can have a workaround for this by placing an <iframe>
behind the div.
See this Internet Explorer z-index bug?
To hide both letter e
and minus sign -
just go for:
onkeydown="return event.keyCode !== 69 && event.keyCode !== 189"
You can use git add -u <filenames>
to stage the deleted files only.
For example, if you deleted the files templates/*.tpl
, then use git add -u templates/*.tpl
.
The -u
is required in order to refer to files that exist in the repository but no longer exist in the working directory. Otherwise, the default of git add
is to look for the files in the working directory, and if you specify files you've deleted there, it won't find them.
Whenever you have heavyweight initialization that should be done once for many
RDD
elements rather than once perRDD
element, and if this initialization, such as creation of objects from a third-party library, cannot be serialized (so that Spark can transmit it across the cluster to the worker nodes), usemapPartitions()
instead ofmap()
.mapPartitions()
provides for the initialization to be done once per worker task/thread/partition instead of once perRDD
data element for example : see below.
val newRd = myRdd.mapPartitions(partition => {
val connection = new DbConnection /*creates a db connection per partition*/
val newPartition = partition.map(record => {
readMatchingFromDB(record, connection)
}).toList // consumes the iterator, thus calls readMatchingFromDB
connection.close() // close dbconnection here
newPartition.iterator // create a new iterator
})
Q2. does
flatMap
behave like map or likemapPartitions
?
Yes. please see example 2 of flatmap
.. its self explanatory.
Q1. What's the difference between an RDD's
map
andmapPartitions
map
works the function being utilized at a per element level whilemapPartitions
exercises the function at the partition level.
Example Scenario : if we have 100K elements in a particular RDD
partition then we will fire off the function being used by the mapping transformation 100K times when we use map
.
Conversely, if we use mapPartitions
then we will only call the particular function one time, but we will pass in all 100K records and get back all responses in one function call.
There will be performance gain since map
works on a particular function so many times, especially if the function is doing something expensive each time that it wouldn't need to do if we passed in all the elements at once(in case of mappartitions
).
Applies a transformation function on each item of the RDD and returns the result as a new RDD.
Listing Variants
def map[U: ClassTag](f: T => U): RDD[U]
Example :
val a = sc.parallelize(List("dog", "salmon", "salmon", "rat", "elephant"), 3)
val b = a.map(_.length)
val c = a.zip(b)
c.collect
res0: Array[(String, Int)] = Array((dog,3), (salmon,6), (salmon,6), (rat,3), (elephant,8))
This is a specialized map that is called only once for each partition. The entire content of the respective partitions is available as a sequential stream of values via the input argument (Iterarator[T]). The custom function must return yet another Iterator[U]. The combined result iterators are automatically converted into a new RDD. Please note, that the tuples (3,4) and (6,7) are missing from the following result due to the partitioning we chose.
preservesPartitioning
indicates whether the input function preserves the partitioner, which should befalse
unless this is a pair RDD and the input function doesn't modify the keys.Listing Variants
def mapPartitions[U: ClassTag](f: Iterator[T] => Iterator[U], preservesPartitioning: Boolean = false): RDD[U]
Example 1
val a = sc.parallelize(1 to 9, 3)
def myfunc[T](iter: Iterator[T]) : Iterator[(T, T)] = {
var res = List[(T, T)]()
var pre = iter.next
while (iter.hasNext)
{
val cur = iter.next;
res .::= (pre, cur)
pre = cur;
}
res.iterator
}
a.mapPartitions(myfunc).collect
res0: Array[(Int, Int)] = Array((2,3), (1,2), (5,6), (4,5), (8,9), (7,8))
Example 2
val x = sc.parallelize(List(1, 2, 3, 4, 5, 6, 7, 8, 9,10), 3)
def myfunc(iter: Iterator[Int]) : Iterator[Int] = {
var res = List[Int]()
while (iter.hasNext) {
val cur = iter.next;
res = res ::: List.fill(scala.util.Random.nextInt(10))(cur)
}
res.iterator
}
x.mapPartitions(myfunc).collect
// some of the number are not outputted at all. This is because the random number generated for it is zero.
res8: Array[Int] = Array(1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 5, 7, 7, 7, 9, 9, 10)
The above program can also be written using flatMap as follows.
Example 2 using flatmap
val x = sc.parallelize(1 to 10, 3)
x.flatMap(List.fill(scala.util.Random.nextInt(10))(_)).collect
res1: Array[Int] = Array(1, 2, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 10)
mapPartitions
transformation is faster than map
since it calls your function once/partition, not once/element..
Further reading : foreach Vs foreachPartitions When to use What?
To install a new package and only that, you have two options:
Using the require
command, just run:
composer require new/package
Composer will guess the best version constraint to use, install the package, and add it to composer.lock
.
You can also specify an explicit version constraint by running:
composer require new/package ~2.5
–OR–
Using the update
command, add the new package manually to composer.json
, then run:
composer update new/package
If Composer complains, stating "Your requirements could not be resolved to an installable set of packages.", you can resolve this by passing the flag --with-dependencies
. This will whitelist all dependencies of the package you are trying to install/update (but none of your other dependencies).
Regarding the question asker's issues with Laravel and mcrypt: check that it's properly enabled in your CLI php.ini. If php -m
doesn't list mcrypt then it's missing.
Important: Don't forget to specify new/package
when using composer update
! Omitting that argument will cause all dependencies, as well as composer.lock
, to be updated.
Use parseJSON
. Look at the doc
var obj = $.parseJSON(data);
Something like this:
$.ajax({
type: "POST",
url: '/admin/systemgoalssystemgoalupdate?format=html',
data: formdata,
success: function (data) {
console.log($.parseJSON(data)); //will log Object
}
});
You have a recent presentation "Monadologie -- professional help on type anxiety" by Christopher League (July 12th, 2010), which is quite interesting on topics of continuation and monad.
The video going with this (slideshare) presentation is actually available at vimeo.
The Monad part start around 37 minutes in, on this one hour video, and starts with slide 42 of its 58 slide presentation.
It is presented as "the leading design pattern for functional programming", but the language used in the examples is Scala, which is both OOP and functional.
You can read more on Monad in Scala in the blog post "Monads - Another way to abstract computations in Scala", from Debasish Ghosh (March 27, 2008).
A type constructor M is a monad if it supports these operations:
# the return function
def unit[A] (x: A): M[A]
# called "bind" in Haskell
def flatMap[A,B] (m: M[A]) (f: A => M[B]): M[B]
# Other two can be written in term of the first two:
def map[A,B] (m: M[A]) (f: A => B): M[B] =
flatMap(m){ x => unit(f(x)) }
def andThen[A,B] (ma: M[A]) (mb: M[B]): M[B] =
flatMap(ma){ x => mb }
So for instance (in Scala):
Option
is a monaddef unit[A] (x: A): Option[A] = Some(x) def flatMap[A,B](m:Option[A])(f:A =>Option[B]): Option[B] = m match { case None => None case Some(x) => f(x) }
List
is Monaddef unit[A] (x: A): List[A] = List(x) def flatMap[A,B](m:List[A])(f:A =>List[B]): List[B] = m match { case Nil => Nil case x::xs => f(x) ::: flatMap(xs)(f) }
Monad are a big deal in Scala because of convenient syntax built to take advantage of Monad structures:
for
comprehension in Scala:
for {
i <- 1 to 4
j <- 1 to i
k <- 1 to j
} yield i*j*k
is translated by the compiler to:
(1 to 4).flatMap { i =>
(1 to i).flatMap { j =>
(1 to j).map { k =>
i*j*k }}}
The key abstraction is the flatMap
, which binds the computation through chaining.
Each invocation of flatMap
returns the same data structure type (but of different value), that serves as the input to the next command in chain.
In the above snippet, flatMap takes as input a closure (SomeType) => List[AnotherType]
and returns a List[AnotherType]
. The important point to note is that all flatMaps take the same closure type as input and return the same type as output.
This is what "binds" the computation thread - every item of the sequence in the for-comprehension has to honor this same type constraint.
If you take two operations (that may fail) and pass the result to the third, like:
lookupVenue: String => Option[Venue]
getLoggedInUser: SessionID => Option[User]
reserveTable: (Venue, User) => Option[ConfNo]
but without taking advantage of Monad, you get convoluted OOP-code like:
val user = getLoggedInUser(session)
val confirm =
if(!user.isDefined) None
else lookupVenue(name) match {
case None => None
case Some(venue) =>
val confno = reserveTable(venue, user.get)
if(confno.isDefined)
mailTo(confno.get, user.get)
confno
}
whereas with Monad, you can work with the actual types (Venue
, User
) like all the operations work, and keep the Option verification stuff hidden, all because of the flatmaps of the for syntax:
val confirm = for {
venue <- lookupVenue(name)
user <- getLoggedInUser(session)
confno <- reserveTable(venue, user)
} yield {
mailTo(confno, user)
confno
}
The yield part will only be executed if all three functions have Some[X]
; any None
would directly be returned to confirm
.
So:
Monads allow ordered computation within Functional Programing, that allows us to model sequencing of actions in a nice structured form, somewhat like a DSL.
And the greatest power comes with the ability to compose monads that serve different purposes, into extensible abstractions within an application.
This sequencing and threading of actions by a monad is done by the language compiler that does the transformation through the magic of closures.
By the way, Monad is not only model of computation used in FP:
Category theory proposes many models of computation. Among them
- the Arrow model of computations
- the Monad model of computations
- the Applicative model of computations
For where field not empty
this worked for me:
->where('table_name.field_name', '<>', '')
Another much simpler possibility is that one of your property names is wrong (probably one you just changed in the class). This is what it was for me in RazorPages .NET Core 3.
You can use map
:
List<String> names =
personList.stream()
.map(Person::getName)
.collect(Collectors.toList());
EDIT :
In order to combine the Lists of friend names, you need to use flatMap
:
List<String> friendNames =
personList.stream()
.flatMap(e->e.getFriends().stream())
.collect(Collectors.toList());
__main__.py
is used for python programs in zip files. The __main__.py
file will be executed when the zip file in run. For example, if the zip file was as such:
test.zip
__main__.py
and the contents of __main__.py
was
import sys
print "hello %s" % sys.argv[1]
Then if we were to run python test.zip world
we would get hello world
out.
So the __main__.py
file run when python is called on a zip file.
What you really need is to compare two objects of the same kind.
Create an NSDate out of your string date (@"2009-05-11") :
http://blog.evandavey.com/2008/12/how-to-convert-a-string-to-nsdate.html
If the current date is a string too, make it an NSDate. If its already an NSDate, leave it.
A query's projection can only have one instance of a given name. As your WHERE clause shows, you have several tables with a column called ID. Because you are selecting *
your projection will have several columns called ID. Or it would have were it not for the compiler hurling ORA-00918.
The solution is quite simple: you will have to expand the projection to explicitly select named columns. Then you can either leave out the duplicate columns, retaining just (say) COACHES.ID or use column aliases: coaches.id as COACHES_ID
.
Perhaps that strikes you as a lot of typing, but it is the only way. If it is any comfort, SELECT *
is regarded as bad practice in production code: explicitly named columns are much safer.
Try this:
public static boolean jsonsEqual(Object obj1, Object obj2) throws JSONException
{
if (!obj1.getClass().equals(obj2.getClass()))
{
return false;
}
if (obj1 instanceof JSONObject)
{
JSONObject jsonObj1 = (JSONObject) obj1;
JSONObject jsonObj2 = (JSONObject) obj2;
String[] names = JSONObject.getNames(jsonObj1);
String[] names2 = JSONObject.getNames(jsonObj1);
if (names.length != names2.length)
{
return false;
}
for (String fieldName:names)
{
Object obj1FieldValue = jsonObj1.get(fieldName);
Object obj2FieldValue = jsonObj2.get(fieldName);
if (!jsonsEqual(obj1FieldValue, obj2FieldValue))
{
return false;
}
}
}
else if (obj1 instanceof JSONArray)
{
JSONArray obj1Array = (JSONArray) obj1;
JSONArray obj2Array = (JSONArray) obj2;
if (obj1Array.length() != obj2Array.length())
{
return false;
}
for (int i = 0; i < obj1Array.length(); i++)
{
boolean matchFound = false;
for (int j = 0; j < obj2Array.length(); j++)
{
if (jsonsEqual(obj1Array.get(i), obj2Array.get(j)))
{
matchFound = true;
break;
}
}
if (!matchFound)
{
return false;
}
}
}
else
{
if (!obj1.equals(obj2))
{
return false;
}
}
return true;
}
First subtract the pivot point (cx,cy)
, then rotate it, then add the point again.
Untested:
POINT rotate_point(float cx,float cy,float angle,POINT p)
{
float s = sin(angle);
float c = cos(angle);
// translate point back to origin:
p.x -= cx;
p.y -= cy;
// rotate point
float xnew = p.x * c - p.y * s;
float ynew = p.x * s + p.y * c;
// translate point back:
p.x = xnew + cx;
p.y = ynew + cy;
return p;
}
It's just a principle about exposure APIs.
Using python, It's a good idea to avoid exposure API in outer space(module or class), function is a good encapsulation place.
It could be a good idea. when you ensure
Even though, Abuse this technique may cause problems and implies a design flaw.
Just from my exp, Maybe misunderstand your question.
Use find to located it. It should be under /usr
somewhere:
find /usr -name java
When running the command, if there are too many "Permission denied" message obfuscating the actual found results then, simply redirect stderr to /dev/null
find /usr -name java 2> /dev/null
If it outputs to stderr as well you'll want to silence that. You can do that by redirecting file descriptor 2:
# Send stdout to out.log, stderr to err.log
myprogram > out.log 2> err.log
# Send both stdout and stderr to out.log
myprogram &> out.log # New bash syntax
myprogram > out.log 2>&1 # Older sh syntax
# Log output, hide errors.
myprogram > out.log 2> /dev/null
You could host password in a repository and then just hide the page behind hidden address, that is derived from that password. This is not a very secure way, but it is simple.
What are iml files in Android Studio project?
A Google search on iml file
turns up:
IML is a module file created by IntelliJ IDEA, an IDE used to develop Java applications. It stores information about a development module, which may be a Java, Plugin, Android, or Maven component; saves the module paths, dependencies, and other settings.
(from this page)
why not to use gradle scripts to integrate with external modules that you add to your project.
You do "use gradle scripts to integrate with external modules", or your own modules.
However, Gradle is not IntelliJ IDEA's native project model — that is separate, held in .iml
files and the metadata in .idea/
directories. In Android Studio, that stuff is largely generated out of the Gradle build scripts, which is why you are sometimes prompted to "sync project with Gradle files" when you change files like build.gradle
. This is also why you don't bother putting .iml
files or .idea/
in version control, as their contents will be regenerated.
If I have a team that work in different IDE's like Eclipse and AS how to make project IDE agnostic?
To a large extent, you can't.
You are welcome to have an Android project that uses the Eclipse-style directory structure (e.g., resources and manifest in the project root directory). You can teach Gradle, via build.gradle
, how to find files in that structure. However, other metadata (compileSdkVersion
, dependencies, etc.) will not be nearly as easily replicated.
Other alternatives include:
Move everybody over to another build system, like Maven, that is equally integrated (or not, depending upon your perspective) to both Eclipse and Android Studio
Hope that Andmore takes off soon, so that perhaps you can have an Eclipse IDE that can build Android projects from Gradle build scripts
Have everyone use one IDE
There is a command line option for logging. The output is saved to screenlog.n file, where n is a number of the screen. From man pages of screen:
‘-L’ Tell screen to turn on automatic output logging for the windows.
In my case, it seems that the crawler is just having a bug. I've tried:
None of these works. This costed me a week. And suddenly out of nowhere it seems to work again.
Here are my research, if someone meets this problem again:
What makes Open Graph checkers unable to detect Open Graph data?
How to know what bots of a website, if I have no root access to the hosting they will read?
What makes Open Graph checkers unable to detect Open Graph data? - Let's Encrypt Community Support
Also, there are more checkers other than the Facebook's Object Debugger for you to check: OpenGraphCheck.com, Abhinay Rathore's Open Graph Tester, Iframely's Embed Codes, Card Validator | Twitter Developers.
Ruby require
is more like "include" in other languages (such as C). It tells Ruby that you want to bring in the contents of another file. Similar mechanisms in other languages are:
Ruby include
is an object-oriented inheritance mechanism used for mixins.
There is a good explanation here:
[The] simple answer is that require and include are essentially unrelated.
"require" is similar to the C include, which may cause newbie confusion. (One notable difference is that locals inside the required file "evaporate" when the require is done.)
The Ruby include is nothing like the C include. The include statement "mixes in" a module into a class. It's a limited form of multiple inheritance. An included module literally bestows an "is-a" relationship on the thing including it.
Emphasis added.
Situation:
We have certificate.key
certificate.crt
inside /user/ssl/
We want to rename anything that starts with certificate
to certificate_OLD
We are now located inside /user
First, you do a dry run with -n
:
rename -n "s/certificate/certificate_old/" ./ssl/*
Which returns:
rename(./ssl/certificate.crt, ./ssl/certificate_OLD.crt)
rename(./ssl/certificate.key, ./ssl/certificate_OLD.key)
Your files will be unchanged this is just a test run.
Solution:
When your happy with the result of the test run it for real:
rename "s/certificate/certificate_OLD/" ./ssl/*
What it means:
`rename "s/ SOMETHING / SOMETING_ELSE " PATH/FILES
Tip:
If you are already on the path run it like this:
rename "s/certificate/certificate_OLD/" *
Or if you want to do this in any sub-directory starting with ss
do:
rename -n "s/certificat/certificate_old/" ./ss*/*
You can also do:
rename -n "s/certi*/certificate_old/" ./ss*/*
Which renames anything starting with certi
in any sub-directory starting with ss
.
The sky is the limit.
Play around with regex and ALWAYS test this BEFORE with -n
.
WATCH OUT THIS WILL EVEN RENAME FOLDER NAMES THAT MATCH.
Better cd
into the directory and do it there.
USE AT OWN RISK.
Though it's probably suggested to get some heavier validation via JS or on the server, HTML5 does support this via the pattern attribute.
<input type= "text" name= "name" pattern= "[0-9]" title= "Title"/>
you can use sort()
, limit()
,skip()
to get last N record start from any skipped value
db.collections.find().sort(key:value).limit(int value).skip(some int value);
I had this error. Nothing worked for me until I opened the SQLServer log file in the "MSSQL10_50" Log folder. That clearly stated which file could not be overwritten. It turned out that the .mdf file was being written into the "MSSQL10" data folder. I made sure that folder had the same SQLServer user permissions as the "MSSQL10_50" equivalent folder. Then it all worked.
The issue here is that the error detail is logged but not reported, so check the logs.
Contrary to @Andre Luus, setting Height="Auto"
will not make the TextBox
stretch. The solution I found was to set VerticalAlignment="Stretch"
The following command gives me all the files that do not contain the pattern foo
:
find . -not -ipath '.*svn*' -exec grep -H -E -o -c "foo" {} \; | grep 0
Luckily, it’s very easy to resolve. Run the follow command from an elevated command prompt:
%windir%\Microsoft.NET\Framework64\v4.0.30319\aspnet_regiis.exe -i
If you’re on a 32-bit machine, you may have to use the following:
%windir%\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe -i
Go to http://dev.mysql.com/downloads/connector/j and with in the dropdown select "Platform Independent" then it will show you the options to download tar.gz file or zip file.
Download zip file and extract it, with in that you will find mysql-connector-XXX.jar
file
If you are using maven then you can add the dependency from the link http://mvnrepository.com/artifact/mysql/mysql-connector-java
Select the version you want to use and add the dependency in your pom.xml
file
One word answer: MONEY :D
1 GB to store in US-East-1: (Updated at 2016.dec.20)
Further storage options, which may be used for temporary storing data while/before processing it:
The costs above are just samples. There can be differences by region, and it can change at any point. Also there are extra costs for data transfer (out to the internet). However they show a ratio between the prices of the services.
There are a lot more differences between these services:
EFS is:
EBS is:
S3 is:
Glacier is:
As it got mentioned in JDL's comment, there are several interesting aspects in terms of pricing. For example Glacier, S3, EFS allocates the storage for you based on your usage, while at EBS you need to predefine the allocated storage. Which means, you need to over estimate. ( However it's easy to add more storage to your EBS volumes, it requires some engineering, which means you always "overpay" your EBS storage, which makes it even more expensive.)
Source: AWS Storage Update – New Lower Cost S3 Storage Option & Glacier Price Reduction
You need to make sure the IIS Management Console is installed.
You need to set postion:relative of outer DIV and position:absolute of inner div.
Try this. Here is the Demo
#one
{
background-color: #EEE;
margin: 62px 258px;
padding: 5px;
width: 200px;
position: relative;
}
#two
{
background-color: #F00;
display: inline-block;
height: 30px;
position: absolute;
width: 100px;
top:10px;
}?
Yes, the syntax is accurate and it should be fine.
Here is the SQL Fiddle Demo I created for your particular case
create table sample2
(
id int primary key,
created_date date,
data varchar(10)
)
insert into sample2 values (1,'2012-01-01','testing');
And here is how to select the data
SELECT Created_Date
FROM sample2
WHERE Created_Date >= DATEADD(day,-11117, GETDATE())
That usually comes from errors in the build path.
If you're using eclipse, there is a view you can add that lists all the errors called "Problems":
Otherwise, you can try to clean the project, and that usually solves a few problems.
Finally, if you add or alter resources from outside your IDE, you'll want to reload the resources and clean.
EDIT (Comment by anonymous user)
This can also be caused by an out of date "Debug Certificate" fixed as follows:
IF ALL FAILS THEN THIS GOTTA BE THE SOLUTION:
Delete your debug certificate under ~/.android/debug.keystore
(on Linux and Mac OS X); the directory is something like %USERPROFILE%/.android
on Windows.
The Eclipse plugin should then generate a new certificate when you next try to build a debug package. You may need to clean and then build to generate the certificate.
This is also another fix for the "setContentView(R.layout.main);" error that says it cannot find R.layout.main when it is actually generated. (R cannot be resolved to a variable).
This is also another fix for the error "Your project has errors..." and you cannot find any. Clean and rebuild are still necessary after generating a new debug certificate.
I tried everything here; nothing worked. Problem was in my Web.config
file, somehow dependent assembly binding got changed from minimum 1
to minimum 0
.
<!-- was -->
<runtime>
<assemblyBinding>
<dependentAssembly>
<assemblyIdentity name="System.Web.Mvc" />
<bindingRedirect oldVersion="0.0.0.0-5.2.3.0" newVersion="5.2.3.0" />
<!-- should have been -->
<bindingRedirect oldVersion="1.0.0.0-5.2.3.0" newVersion="5.2.3.0" />
Another way to think about Return-Path
vs Reply-To
is to compare it to snail mail.
When you send an envelope in the mail, you specify a return address. If the recipient does not exist or refuses your mail, the postmaster returns the envelope back to the return address. For email, the return address is the Return-Path
.
Inside of the envelope might be a letter and inside of the letter it may direct the recipient to "Send correspondence to example address". For email, the example address is the Reply-To
.
In essence, a Postage Return Address is comparable to SMTP's Return-Path
header and SMTP's Reply-To
header is similar to the replying instructions contained in a letter.
Building on @Mike Gledhill's code, I've taken it a step further and added more parameters. If you have a SVG RECT and want text to wrap inside it, this may be handy:
function wraptorect(textnode, boxObject, padding, linePadding) {
var x_pos = parseInt(boxObject.getAttribute('x')),
y_pos = parseInt(boxObject.getAttribute('y')),
boxwidth = parseInt(boxObject.getAttribute('width')),
fz = parseInt(window.getComputedStyle(textnode)['font-size']); // We use this to calculate dy for each TSPAN.
var line_height = fz + linePadding;
// Clone the original text node to store and display the final wrapping text.
var wrapping = textnode.cloneNode(false); // False means any TSPANs in the textnode will be discarded
wrapping.setAttributeNS(null, 'x', x_pos + padding);
wrapping.setAttributeNS(null, 'y', y_pos + padding);
// Make a copy of this node and hide it to progressively draw, measure and calculate line breaks.
var testing = wrapping.cloneNode(false);
testing.setAttributeNS(null, 'visibility', 'hidden'); // Comment this out to debug
var testingTSPAN = document.createElementNS(null, 'tspan');
var testingTEXTNODE = document.createTextNode(textnode.textContent);
testingTSPAN.appendChild(testingTEXTNODE);
testing.appendChild(testingTSPAN);
var tester = document.getElementsByTagName('svg')[0].appendChild(testing);
var words = textnode.textContent.split(" ");
var line = line2 = "";
var linecounter = 0;
var testwidth;
for (var n = 0; n < words.length; n++) {
line2 = line + words[n] + " ";
testing.textContent = line2;
testwidth = testing.getBBox().width;
if ((testwidth + 2*padding) > boxwidth) {
testingTSPAN = document.createElementNS('http://www.w3.org/2000/svg', 'tspan');
testingTSPAN.setAttributeNS(null, 'x', x_pos + padding);
testingTSPAN.setAttributeNS(null, 'dy', line_height);
testingTEXTNODE = document.createTextNode(line);
testingTSPAN.appendChild(testingTEXTNODE);
wrapping.appendChild(testingTSPAN);
line = words[n] + " ";
linecounter++;
}
else {
line = line2;
}
}
var testingTSPAN = document.createElementNS('http://www.w3.org/2000/svg', 'tspan');
testingTSPAN.setAttributeNS(null, 'x', x_pos + padding);
testingTSPAN.setAttributeNS(null, 'dy', line_height);
var testingTEXTNODE = document.createTextNode(line);
testingTSPAN.appendChild(testingTEXTNODE);
wrapping.appendChild(testingTSPAN);
testing.parentNode.removeChild(testing);
textnode.parentNode.replaceChild(wrapping,textnode);
return linecounter;
}
document.getElementById('original').onmouseover = function () {
var container = document.getElementById('destination');
var numberoflines = wraptorect(this,container,20,1);
console.log(numberoflines); // In case you need it
};
On the anaconda prompt, do a
conda -V
or conda --version
to get the conda version.python -V
or python --version
to get the python version.conda list anaconda$
to get the Anaconda version.conda list
to get the Name, Version, Build & Channel details of all the packages installed (in the current environment).conda info
to get all the current environment details.conda info --envs
To see a list of all your environmentsAnd , if your device is a Sony Ericsson Xperia X8 with the original ROM (2.1) or similar, then use:
<uses-sdk android:minSdkVersion="7" android:targetSdkVersion="17" />
in AndroidManifest.xml file
I had a different variation on this question where I only had a single DATETIME
field and needed a limit
after a group by
or distinct
after sorting descending based on the datetime
field, but this is what helped me:
select distinct (column) from
(select column from database.table
order by date_column DESC) as hist limit 10
In this instance with the split fields, if you can sort on a concat, then you might be able to get away with something like:
select name,date,time from
(select name from table order by concat(date,' ',time) ASC)
as sorted
Then if you wanted to limit you would simply add your limit statement to the end:
select name,date,time from
(select name from table order by concat(date,' ',time) ASC)
as sorted limit 10
scanf
uses any whitespace as a delimiter, so if you just say scanf("%d", &var)
it will skip any whitespace and then read an integer (digits up to the next non-digit) and nothing more.
Note that whitespace is any whitespace -- spaces, tabs, newlines, or carriage returns. Any of those are whitespace and any one or more of them will serve to delimit successive integers.
Here is another way to format the query:
return $repository->createQueryBuilder('u')
->select('count(u.id)')
->getQuery()
->getSingleScalarResult();
Code:
^([0-9]*[1-9][0-9]*(\.[0-9]+)?|[0]+\.[0-9]*[1-9][0-9]*)$
Example: http://regexr.com/3anf5
You would need to do something like this. I am typing this off the top of my head, so this may not be 100% correct.
CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB(); CGContextRef context = CGBitmapContextCreate(NULL, 640, 360, 8, 4 * width, colorSpace, kCGImageAlphaPremultipliedFirst); CGColorSpaceRelease(colorSpace); CGContextDrawImage(context, CGRectMake(0,-160,640,360), cgImgFromAVCaptureSession); CGImageRef image = CGBitmapContextCreateImage(context); UIImage* myCroppedImg = [UIImage imageWithCGImage:image]; CGContextRelease(context);
The type IEnumerable<T>
does not support such operations. The purpose of the IEnumerable<T>
interface is to allow a consumer to view the contents of a collection. Not to modify the values.
When you do operations like .ToList().Add() you are creating a new List<T>
and adding a value to that list. It has no connection to the original list.
What you can do is use the Add extension method to create a new IEnumerable<T>
with the added value.
items = items.Add("msg2");
Even in this case it won't modify the original IEnumerable<T>
object. This can be verified by holding a reference to it. For example
var items = new string[]{"foo"};
var temp = items;
items = items.Add("bar");
After this set of operations the variable temp will still only reference an enumerable with a single element "foo" in the set of values while items will reference a different enumerable with values "foo" and "bar".
EDIT
I contstantly forget that Add is not a typical extension method on IEnumerable<T>
because it's one of the first ones that I end up defining. Here it is
public static IEnumerable<T> Add<T>(this IEnumerable<T> e, T value) {
foreach ( var cur in e) {
yield return cur;
}
yield return value;
}
You might want to create static class which will contain all the fonts. That way, you won't create the font multiple times which might impact badly on performance. Just make sure that you create a sub-folder called "fonts" under "assets" folder.
Do something like:
public class CustomFontsLoader {
public static final int FONT_NAME_1 = 0;
public static final int FONT_NAME_2 = 1;
public static final int FONT_NAME_3 = 2;
private static final int NUM_OF_CUSTOM_FONTS = 3;
private static boolean fontsLoaded = false;
private static Typeface[] fonts = new Typeface[3];
private static String[] fontPath = {
"fonts/FONT_NAME_1.ttf",
"fonts/FONT_NAME_2.ttf",
"fonts/FONT_NAME_3.ttf"
};
/**
* Returns a loaded custom font based on it's identifier.
*
* @param context - the current context
* @param fontIdentifier = the identifier of the requested font
*
* @return Typeface object of the requested font.
*/
public static Typeface getTypeface(Context context, int fontIdentifier) {
if (!fontsLoaded) {
loadFonts(context);
}
return fonts[fontIdentifier];
}
private static void loadFonts(Context context) {
for (int i = 0; i < NUM_OF_CUSTOM_FONTS; i++) {
fonts[i] = Typeface.createFromAsset(context.getAssets(), fontPath[i]);
}
fontsLoaded = true;
}
}
This way, you can get the font from everywhere in your application.
Updated 2018
The dropdown-submenu
has been removed in Bootstrap 3 RC. In the words of Bootstrap author Mark Otto..
"Submenus just don't have much of a place on the web right now, especially the mobile web. They will be removed with 3.0" - https://github.com/twbs/bootstrap/pull/6342
But, with a little extra CSS you can get the same functionality.
Bootstrap 4 (navbar submenu on hover)
.navbar-nav li:hover > ul.dropdown-menu {
display: block;
}
.dropdown-submenu {
position:relative;
}
.dropdown-submenu>.dropdown-menu {
top:0;
left:100%;
margin-top:-6px;
}
Navbar submenu dropdown hover
Navbar submenu dropdown hover (right aligned)
Navbar submenu dropdown click (right aligned)
Navbar dropdown hover (no submenu)
Bootstrap 3
Here is an example that uses 3.0 RC 1: http://bootply.com/71520
Here is an example that uses Bootstrap 3.0.0 (final): http://bootply.com/86684
CSS
.dropdown-submenu {
position:relative;
}
.dropdown-submenu>.dropdown-menu {
top:0;
left:100%;
margin-top:-6px;
margin-left:-1px;
-webkit-border-radius:0 6px 6px 6px;
-moz-border-radius:0 6px 6px 6px;
border-radius:0 6px 6px 6px;
}
.dropdown-submenu:hover>.dropdown-menu {
display:block;
}
.dropdown-submenu>a:after {
display:block;
content:" ";
float:right;
width:0;
height:0;
border-color:transparent;
border-style:solid;
border-width:5px 0 5px 5px;
border-left-color:#cccccc;
margin-top:5px;
margin-right:-10px;
}
.dropdown-submenu:hover>a:after {
border-left-color:#ffffff;
}
.dropdown-submenu.pull-left {
float:none;
}
.dropdown-submenu.pull-left>.dropdown-menu {
left:-100%;
margin-left:10px;
-webkit-border-radius:6px 0 6px 6px;
-moz-border-radius:6px 0 6px 6px;
border-radius:6px 0 6px 6px;
}
Sample Markup
<div class="navbar navbar-default navbar-fixed-top" role="navigation">
<div class="container">
<div class="navbar-header">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-ex1-collapse">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
</div>
<div class="collapse navbar-collapse navbar-ex1-collapse">
<ul class="nav navbar-nav">
<li class="menu-item dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown">Drop Down<b class="caret"></b></a>
<ul class="dropdown-menu">
<li class="menu-item dropdown dropdown-submenu">
<a href="#" class="dropdown-toggle" data-toggle="dropdown">Level 1</a>
<ul class="dropdown-menu">
<li class="menu-item ">
<a href="#">Link 1</a>
</li>
<li class="menu-item dropdown dropdown-submenu">
<a href="#" class="dropdown-toggle" data-toggle="dropdown">Level 2</a>
<ul class="dropdown-menu">
<li>
<a href="#">Link 3</a>
</li>
</ul>
</li>
</ul>
</li>
</ul>
</li>
</ul>
</div>
</div>
</div>
P.S. - Example in navbar that adjusts left position: http://bootply.com/92442
The method tf.shape is a TensorFlow static method. However, there is also the method get_shape for the Tensor class. See
https://www.tensorflow.org/api_docs/python/tf/Tensor#get_shape
You can get the above output using following code in c
#include<stdio.h>
#include<conio.h>
#include<string.h>
int main()
{
char *str;
clrscr();
printf("\n Enter the string");
gets(str);
for(int i=0;i<strlen(str)-1;i++)
{
for(int j=i;j<=i+1;j++)
printf("%c",str[j]);
printf("\t");
}
getch();
return 0;
}
Url.Action("Evil", model)
will generate a get query string but your ajax method is post and it will throw error status of 500(Internal Server Error). – Fereydoon Barikzehy Feb 14 at 9:51
Just Add "JsonRequestBehavior.AllowGet" on your Json object.
Use this code to easy get Date & Time :
package date.time;
import java.text.SimpleDateFormat;
import java.util.Date;
public class DateTime {
public static void main(String[] args) {
SimpleDateFormat dnt = new SimpleDateFormat("dd/MM/yy :: HH:mm:ss");
Date date = new Date();
System.out.println("Today Date & Time at Now :"+dnt.format(date));
}
}
The first part:
.Cells(.Rows.Count,"A")
Sends you to the bottom row of column A, which you knew already.
The End function starts at a cell and then, depending on the direction you tell it, goes that direction until it reaches the edge of a group of cells that have text. Meaning, if you have text in cells C4:E4 and you type:
Sheet1.Cells(4,"C").End(xlToRight).Select
The program will select E4, the rightmost cell with text in it.
In your case, the code is spitting out the row of the very last cell with text in it in column A. Does that help?
from command console, if you get this error you can avoid it by typing
c:\> sqlplus /nolog
then you can connect
SQL> conn user/pass @host:port/service
I usually start with something like:
set lines 256
set trimout on
set tab off
Have a look at help set
if you have the help information installed. And then select name,address
rather than select *
if you really only want those two columns.
Another clean way to do it is to define a private method which create instance et persist concerned Model.
public function up()
{
Schema::create('roles', function (Blueprint $table) {
$table->increments('id');
$table->string('label', 256);
$table->timestamps();
$table->softDeletes();
});
$this->postCreate('admin', 'user');
}
private function postCreate(string ...$roles) {
foreach ($roles as $role) {
$model = new Role();
$model->setAttribute('label', $role);
$model->save();
}
}
With this solution, timestamps fields will be generated by Eloquent.
EDIT: it's better to use seeder system to disctinct database structure generation and database population.
You can get everything through ExternalContext
. In JSF 1.x, you can get the raw HttpServletResponse
object by ExternalContext#getResponse()
. In JSF 2.x, you can use the bunch of new delegate methods like ExternalContext#getResponseOutputStream()
without the need to grab the HttpServletResponse
from under the JSF hoods.
On the response, you should set the Content-Type
header so that the client knows which application to associate with the provided file. And, you should set the Content-Length
header so that the client can calculate the download progress, otherwise it will be unknown. And, you should set the Content-Disposition
header to attachment
if you want a Save As dialog, otherwise the client will attempt to display it inline. Finally just write the file content to the response output stream.
Most important part is to call FacesContext#responseComplete()
to inform JSF that it should not perform navigation and rendering after you've written the file to the response, otherwise the end of the response will be polluted with the HTML content of the page, or in older JSF versions, you will get an IllegalStateException
with a message like getoutputstream() has already been called for this response
when the JSF implementation calls getWriter()
to render HTML.
You only need to make sure that the action method is not called by an ajax request, but that it is called by a normal request as you fire with <h:commandLink>
and <h:commandButton>
. Ajax requests and remote commands are handled by JavaScript which in turn has, due to security reasons, no facilities to force a Save As dialogue with the content of the ajax response.
In case you're using e.g. PrimeFaces <p:commandXxx>
, then you need to make sure that you explicitly turn off ajax via ajax="false"
attribute. In case you're using ICEfaces, then you need to nest a <f:ajax disabled="true" />
in the command component.
public void download() throws IOException {
FacesContext fc = FacesContext.getCurrentInstance();
ExternalContext ec = fc.getExternalContext();
ec.responseReset(); // Some JSF component library or some Filter might have set some headers in the buffer beforehand. We want to get rid of them, else it may collide.
ec.setResponseContentType(contentType); // Check http://www.iana.org/assignments/media-types for all types. Use if necessary ExternalContext#getMimeType() for auto-detection based on filename.
ec.setResponseContentLength(contentLength); // Set it with the file size. This header is optional. It will work if it's omitted, but the download progress will be unknown.
ec.setResponseHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\""); // The Save As popup magic is done here. You can give it any file name you want, this only won't work in MSIE, it will use current request URL as file name instead.
OutputStream output = ec.getResponseOutputStream();
// Now you can write the InputStream of the file to the above OutputStream the usual way.
// ...
fc.responseComplete(); // Important! Otherwise JSF will attempt to render the response which obviously will fail since it's already written with a file and closed.
}
public void download() throws IOException {
FacesContext fc = FacesContext.getCurrentInstance();
HttpServletResponse response = (HttpServletResponse) fc.getExternalContext().getResponse();
response.reset(); // Some JSF component library or some Filter might have set some headers in the buffer beforehand. We want to get rid of them, else it may collide.
response.setContentType(contentType); // Check http://www.iana.org/assignments/media-types for all types. Use if necessary ServletContext#getMimeType() for auto-detection based on filename.
response.setContentLength(contentLength); // Set it with the file size. This header is optional. It will work if it's omitted, but the download progress will be unknown.
response.setHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\""); // The Save As popup magic is done here. You can give it any file name you want, this only won't work in MSIE, it will use current request URL as file name instead.
OutputStream output = response.getOutputStream();
// Now you can write the InputStream of the file to the above OutputStream the usual way.
// ...
fc.responseComplete(); // Important! Otherwise JSF will attempt to render the response which obviously will fail since it's already written with a file and closed.
}
In case you need to stream a static file from the local disk file system, substitute the code as below:
File file = new File("/path/to/file.ext");
String fileName = file.getName();
String contentType = ec.getMimeType(fileName); // JSF 1.x: ((ServletContext) ec.getContext()).getMimeType(fileName);
int contentLength = (int) file.length();
// ...
Files.copy(file.toPath(), output);
In case you need to stream a dynamically generated file, such as PDF or XLS, then simply provide output
there where the API being used expects an OutputStream
.
E.g. iText PDF:
String fileName = "dynamic.pdf";
String contentType = "application/pdf";
// ...
Document document = new Document();
PdfWriter writer = PdfWriter.getInstance(document, output);
document.open();
// Build PDF content here.
document.close();
E.g. Apache POI HSSF:
String fileName = "dynamic.xls";
String contentType = "application/vnd.ms-excel";
// ...
HSSFWorkbook workbook = new HSSFWorkbook();
// Build XLS content here.
workbook.write(output);
workbook.close();
Note that you cannot set the content length here. So you need to remove the line to set response content length. This is technically no problem, the only disadvantage is that the enduser will be presented an unknown download progress. In case this is important, then you really need to write to a local (temporary) file first and then provide it as shown in previous chapter.
If you're using JSF utility library OmniFaces, then you can use one of the three convenient Faces#sendFile()
methods taking either a File
, or an InputStream
, or a byte[]
, and specifying whether the file should be downloaded as an attachment (true
) or inline (false
).
public void download() throws IOException {
Faces.sendFile(file, true);
}
Yes, this code is complete as-is. You don't need to invoke responseComplete()
and so on yourself. This method also properly deals with IE-specific headers and UTF-8 filenames. You can find source code here.
Personally, I like to use named entities when they are available, because they make my HTML more readable. Because of that, I like to use ✓
for ✓ and ✗
for ✗. If you're not sure whether a named entity exists for the character you want, try the &what search site. It includes the name for each entity, if there is one.
As mentioned in the comments, ✓
and ✗
are not supported in HTML4, so you may be better off using the more cryptic ✓
and ✗
if you want to target the most browsers. The most definitive references I could find were on the W3C site: HTML4 and HTML5.