String p1 = "example";
String p2 = "example";
String p3 = "example".intern();
String p4 = p2.intern();
String p5 = new String(p3);
String p6 = new String("example");
String p7 = p6.intern();
if (p1 == p2)
System.out.println("p1 and p2 are the same");
if (p1 == p3)
System.out.println("p1 and p3 are the same");
if (p1 == p4)
System.out.println("p1 and p4 are the same");
if (p1 == p5)
System.out.println("p1 and p5 are the same");
if (p1 == p6)
System.out.println("p1 and p6 are the same");
if (p1 == p6.intern())
System.out.println("p1 and p6 are the same when intern is used");
if (p1 == p7)
System.out.println("p1 and p7 are the same");
When two strings are created independently, intern()
allows you to compare them and also it helps you in creating a reference in the string pool if the reference didn't exist before.
When you use String s = new String(hi)
, java creates a new instance of the string, but when you use String s = "hi"
, java checks if there is an instance of word "hi" in the code or not and if it exists, it just returns the reference.
Since comparing strings is based on reference, intern()
helps in you creating a reference and allows you to compare the contents of the strings.
When you use intern()
in the code, it clears of the space used by the string referring to the same object and just returns the reference of the already existing same object in memory.
But in case of p5 when you are using:
String p5 = new String(p3);
Only contents of p3 are copied and p5 is created newly. So it is not interned.
So the output will be:
p1 and p2 are the same
p1 and p3 are the same
p1 and p4 are the same
p1 and p6 are the same when intern is used
p1 and p7 are the same
http://docs.oracle.com/javase/7/docs/api/java/lang/String.html#intern()
Basically doing String.intern() on a series of strings will ensure that all strings having same contents share same memory. So if you have list of names where 'john' appears 1000 times, by interning you ensure only one 'john' is actually allocated memory.
This can be useful to reduce memory requirements of your program. But be aware that the cache is maintained by JVM in permanent memory pool which is usually limited in size compared to heap so you should not use intern if you don't have too many duplicate values.
More on memory constraints of using intern()
On one hand, it is true that you can remove String duplicates by internalizing them. The problem is that the internalized strings go to the Permanent Generation, which is an area of the JVM that is reserved for non-user objects, like Classes, Methods and other internal JVM objects. The size of this area is limited, and is usually much smaller than the heap. Calling intern() on a String has the effect of moving it out from the heap into the permanent generation, and you risk running out of PermGen space.
-- From: http://www.codeinstructions.com/2009/01/busting-javalangstringintern-myths.html
From JDK 7 (I mean in HotSpot), something has changed.
In JDK 7, interned strings are no longer allocated in the permanent generation of the Java heap, but are instead allocated in the main part of the Java heap (known as the young and old generations), along with the other objects created by the application. This change will result in more data residing in the main Java heap, and less data in the permanent generation, and thus may require heap sizes to be adjusted. Most applications will see only relatively small differences in heap usage due to this change, but larger applications that load many classes or make heavy use of the String.intern() method will see more significant differences.
-- From Java SE 7 Features and Enhancements
Update: Interned strings are stored in main heap from Java 7 onwards. http://www.oracle.com/technetwork/java/javase/jdk7-relnotes-418459.html#jdk7changes
it is work for me with parse Server
{
"ContractID": "203-17-DC0101-00003-10011",
"Supplier":"Sample Co., Ltd",
"Value":12345.80,
"Curency":"USD",
"StartDate": {
"__type": "Date",
"iso": "2017-08-22T06:11:00.000Z"
}
}
PHP > 5.3 use fgetcsv() or str_getcsv(). Couldn't be simpler.
There's the global attribute called hidden
. But I'm green to all this and maybe there was a reason it wasn't mentioned yet?
var someCondition = true;_x000D_
_x000D_
if (someCondition == true){_x000D_
document.getElementById('hidden div').hidden = false;_x000D_
}
_x000D_
<div id="hidden div" hidden>_x000D_
stuff hidden by default_x000D_
</div>
_x000D_
https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/hidden
Most answers and explanations are not to explain what is a valid string of endDate
or startDate
.
Danny gave us two useful example.
$('#datepicker').datepicker({
startDate: '-2m',
endDate: '+2d'
});
But why?let's take a look at the source code at bootstrap-datetimepicker.js
.
There are some code begin line 1343 tell us how does it work.
if (/^[-+]\d+[dmwy]([\s,]+[-+]\d+[dmwy])*$/.test(date)) {
var part_re = /([-+]\d+)([dmwy])/,
parts = date.match(/([-+]\d+)([dmwy])/g),
part, dir;
date = new Date();
for (var i = 0; i < parts.length; i++) {
part = part_re.exec(parts[i]);
dir = parseInt(part[1]);
switch (part[2]) {
case 'd':
date.setUTCDate(date.getUTCDate() + dir);
break;
case 'm':
date = Datetimepicker.prototype.moveMonth.call(Datetimepicker.prototype, date, dir);
break;
case 'w':
date.setUTCDate(date.getUTCDate() + dir * 7);
break;
case 'y':
date = Datetimepicker.prototype.moveYear.call(Datetimepicker.prototype, date, dir);
break;
}
}
return UTCDate(date.getUTCFullYear(), date.getUTCMonth(), date.getUTCDate(), date.getUTCHours(), date.getUTCMinutes(), date.getUTCSeconds(), 0);
}
There are four kinds of expressions.
w
means weekm
means monthy
means yeard
means dayLook at the regular expression ^[-+]\d+[dmwy]([\s,]+[-+]\d+[dmwy])*$
.
You can do more than these -0d
or +1m
.
Try harder like startDate:'+1y,-2m,+0d,-1w'
.And the separator ,
could be one of [\f\n\r\t\v,]
Database Clustering is actually a mode of synchronous replication between two or possibly more nodes with an added functionality of fault tolerance added to your system, and that too in a shared nothing architecture. By shared nothing it means that the individual nodes actually don't share any physical resources like disk or memory.
As far as keeping the data synchronized is concerned, there is a management server to which all the data nodes are connected along with the SQL node to achieve this(talking specifically about MySQL).
Now about the differences: load balancing is just one result that could be achieved through clustering, the others include high availability, scalability and fault tolerance.
Date in javascript is just keeping it simple inside. so the date-time data is stored in UTC unix epoch (milliseconds or ms).
If you want to have a "fixed" time that doesn't change in whatever timezone you are on the earth, you can adjust the time in UTC to match your current local timezone and save it. And when retreiving it, in whatever your local timezone you are in, it will show the adjusted UTC time based on the one who saved it and the add the local timezone offset to get the "fixed" time.
To save date (in ms)
toUTC(datetime) {
const myDate = (typeof datetime === 'number')
? new Date(datetime)
: datetime;
if (!myDate || (typeof myDate.getTime !== 'function')) {
return 0;
}
const getUTC = myDate.getTime();
const offset = myDate.getTimezoneOffset() * 60000; // It's in minutes so convert to ms
return getUTC - offset; // UTC - OFFSET
}
To retreive/show date (in ms)
fromUTC(datetime) {
const myDate = (typeof datetime === 'number')
? new Date(datetime)
: datetime;
if (!myDate || (typeof myDate.getTime !== 'function')) {
return 0;
}
const getUTC = myDate.getTime();
const offset = myDate.getTimezoneOffset() * 60000; // It's in minutes so convert to ms
return getUTC + offset; // UTC + OFFSET
}
Then you can:
const saveTime = new Date(toUTC(Date.parse("2005-07-08T00:00:00+0000")));
// SEND TO DB....
// FROM DB...
const showTime = new Date(fromUTC(saveTime));
The problem is that ASP.NET does not get to know about this extra or removed listitem. You got an number of options (listed below):
I hope this helps.
`pwgen 8 1`.chomp
You can use this variant:
import lombok.Getter;
import com.fasterxml.jackson.annotation.JsonGetter;
import com.fasterxml.jackson.annotation.JsonProperty;
//...
@JsonProperty(value = "rr") // for deserialization
@Getter(onMethod_ = {@JsonGetter(value = "r")}) // for serialization
private String rrrr;
with Lombok getter
Here is a pitfall to avoid. In case you need to access your variable $name within a function, you need to say "global $name;" at the beginning of that function. You need to repeat this for each function in the same file.
include('front.inc');
global $name;
function foo() {
echo $name;
}
function bar() {
echo $name;
}
foo();
bar();
will only show errors. The correct way to do that would be:
include('front.inc');
function foo() {
global $name;
echo $name;
}
function bar() {
global $name;
echo $name;
}
foo();
bar();
Sql Server does not (on my knowledge) have in-build Split function. Split function in general on all platforms would have comma-separated string value to be split into individual strings. In sql server, the main objective or necessary of the Split function is to convert a comma-separated string value (‘abc,cde,fgh’) into a temp table with each string as rows.
The below Split function is Table-valued function which would help us splitting comma-separated (or any other delimiter value) string to individual string.
CREATE FUNCTION dbo.Split(@String varchar(8000), @Delimiter char(1))
returns @temptable TABLE (items varchar(8000))
as
begin
declare @idx int
declare @slice varchar(8000)
select @idx = 1
if len(@String)<1 or @String is null return
while @idx!= 0
begin
set @idx = charindex(@Delimiter,@String)
if @idx!=0
set @slice = left(@String,@idx - 1)
else
set @slice = @String
if(len(@slice)>0)
insert into @temptable(Items) values(@slice)
set @String = right(@String,len(@String) - @idx)
if len(@String) = 0 break
end
return
end
select top 10 * from dbo.split('Chennai,Bangalore,Mumbai',',')
the complete can be found at follownig link http://www.logiclabz.com/sql-server/split-function-in-sql-server-to-break-comma-separated-strings-into-table.aspx
Have you considered using jQuery to avoid all the browser detection? With jQuery, it would be as simple as:
$("#mytest1").click();
import urllib2
mp3file = urllib2.urlopen("http://www.example.com/songs/mp3.mp3")
with open('test.mp3','wb') as output:
output.write(mp3file.read())
The wb
in open('test.mp3','wb')
opens a file (and erases any existing file) in binary mode so you can save data with it instead of just text.
both of them works
<%= f.submit class: "btn btn-primary" %>
and
<%= f.submit "Name of Button", class: "btn btn-primary "%>
ProgressDialog
was deprecated in API level 26 .
refers to functions or elements that are in the process of being replaced by newer ones."Deprecated"
ProgressDialog is a modal dialog, which prevents the user from interacting with the app. Instead of using this class, you should use a progress indicator like
ProgressBar
, which can be embedded in your app's UI.
Advantage
I would personally say that ProgressBar
has the edge over the two .ProgressBar
is a user interface element that indicates the progress of an operation. Display progress bars to a user in a non-interruptive way. Show the progress bar in your app's user interface.
When you can't apply Juki's answer then after selecting the desired version of media you can use Fiddler to determine where the files are located.
SQL Server 2019 Express Edition (English):
SQL Server 2017 Express Edition (English):
SQL Server 2016 with SP2 Express Edition (English):
SQL Server 2016 with SP1 Express Edition (English):
And here is how to use Fiddler.
Place your springbootapplication class in root package for example if your service,controller is in springBoot.xyz package then your main class should be in springBoot package otherwise it will not scan below packages
Looks like your IndexPartial
action method has an argument which is a complex object. If you are passing a a lot of data (complex object), It might be a good idea to convert your action method to a HttpPost
action method and use jQuery post
to post data to that. GET has limitation on the query string value.
[HttpPost]
public PartialViewResult IndexPartial(DashboardViewModel m)
{
//May be you want to pass the posted model to the parial view?
return PartialView("_IndexPartial");
}
Your script should be
var url = "@Url.Action("IndexPartial","YourControllerName")";
var model = { Name :"Shyju", Location:"Detroit"};
$.post(url, model, function(res){
//res contains the markup returned by the partial view
//You probably want to set that to some Div.
$("#SomeDivToShowTheResult").html(res);
});
Assuming Name
and Location
are properties of your DashboardViewModel
class and SomeDivToShowTheResult
is the id of a div in your page where you want to load the content coming from the partialview.
You can build more complex object in js if you want. Model binding will work as long as your structure matches with the viewmodel class
var model = { Name :"Shyju",
Location:"Detroit",
Interests : ["Code","Coffee","Stackoverflow"]
};
$.ajax({
type: "POST",
data: JSON.stringify(model),
url: url,
contentType: "application/json"
}).done(function (res) {
$("#SomeDivToShowTheResult").html(res);
});
For the above js model to be transformed to your method parameter, Your View Model should be like this.
public class DashboardViewModel
{
public string Name {set;get;}
public string Location {set;get;}
public List<string> Interests {set;get;}
}
And in your action method, specify [FromBody]
[HttpPost]
public PartialViewResult IndexPartial([FromBody] DashboardViewModel m)
{
return PartialView("_IndexPartial",m);
}
In windows just open the explorer navigate to your SLN folder click into search field and type kind:=folder;obj --> for obj folders use CTRL+A and delete 'em - same for bin Done
No need for any tool or extra software ;)
It's quite simple if you're using SourceTree.
Basically you just need to remove and re-add the conflicting tag:
Admittedly, I stole this question from somewhere else (can't remember where I read it any more) but thought it was funny:
Q: What is T_PAAMAYIM_NEKUDOTAYIM
?
A: Its the scope resolution operator (double colon)
An experienced PHP'er immediately knows what it means. Less experienced (and not Hebrew) developers may want to read this.
But more serious questions now:
Q: What is the cause of this warning: 'Warning: Cannot modify header information - headers already sent', and what is a good practice to prevent it?
A: Cause: body data was sent, causing headers to be sent too.
Prevention: Be sure to execute header specific code first before you output any body data. Be sure you haven't accidentally sent out whitespace or any other characters.
Q: What is wrong with this query: "SELECT * FROM table WHERE id = $_POST[ 'id' ]"
?
A: 1. It is vulnarable to SQL injection. Never use user input directly in queries. Sanitize it first. Preferebly use prepared statements (PDO) 2. Don't select all columns (*), but specify every single column. This is predominantly ment to prevent queries hogging up memory when for instance a BLOB column is added at some point in the future.
Q: What is wrong with this if statement: if( !strpos( $haystack, $needle ) ...
?
A: strpos
returns the index position of where it first found the $needle, which could be 0
. Since 0
also resolves to false
the solution is to use strict comparison: if( false !== strpos( $haystack, $needle )...
Q: What is the preferred way to write this if statement, and why?
if( 5 == $someVar )
or if( $someVar == 5 )
A: The former, as it prevents accidental assignment of 5 to $someVar when you forget to use 2 equalsigns ($someVar = 5
), and will cause an error, the latter won't.
Q: Given this code:
function doSomething( &$arg )
{
$return = $arg;
$arg += 1;
return $return;
}
$a = 3;
$b = doSomething( $a );
...what is the value of $a
and $b
after the function call and why?
A: $a
is 4
and $b
is 3
. The former because $arg is passed by reference, the latter because the return value of the function is a copy of (not a reference to) the initial value of the argument.
OOP specific
Q: What is the difference between public
, protected
and private
in a class definition?
A: public
makes a class member available to "everyone", protected
makes the class member available to only itself and derived classes, private
makes the class member only available to the class itself.
Q: What is wrong with this code:
class SomeClass
{
protected $_someMember;
public function __construct()
{
$this->_someMember = 1;
}
public static function getSomethingStatic()
{
return $this->_someMember * 5; // here's the catch
}
}
A: Static methods don't have access to $this, because static methods can be executed without instantiating a class.
Q: What is the difference between an interface and an abstract class?
A: An interface defines a contract between an implementing class is and an object that calls the interface. An abstract class pre-defines certain behaviour for classes that will extend it. To a certain degree this can also be considered a contract, since it garantuees certain methods to exist.
Q: What is wrong with classes that predominantly define getters and setters, that map straight to it's internal members, without actually having methods that execute behaviour?
A: This might be a code smell since the object acts as an ennobled array, without much other use.
Q: Why is PHP's implementation of the use of interfaces sub-optimal?
A: PHP doesn't allow you to define the expected return type of the method's, which essentially renders interfaces pretty useless. :-P
I am not sure if this a pythonic way or not but this seems simple if both lists have the same number of elements :
list_a = [1, 2, 3, 4]
list_b = [5, 6, 7, 8]
list_c=[(list_a[i],list_b[i]) for i in range(0,len(list_a))]
Try to add display:inline;
to the CSS property of a button.
Go to installed updates and just uninstall Internet Explorer 11 Windows update. It works for me.
All standard references below refers to N4659: March 2017 post-Kona working draft/C++17 DIS.
But, with the first two non-template examples, are there any other subtle differences in the standard?
(1) In addition to the examples of alias templates, which has already been mentioned in the original post.
As governed by [dcl.typedef]/2 [extract, emphasis mine]
[dcl.typedef]/2 A typedef-name can also be introduced by an alias-declaration. The identifier following the
using
keyword becomes a typedef-name and the optional attribute-specifier-seq following the identifier appertains to that typedef-name. Such a typedef-name has the same semantics as if it were introduced by thetypedef
specifier. [...]
a typedef-name introduced by an alias-declaration has the same semantics as if it were introduced by the typedef
declaration.
However, this does not imply that the two variations have the same restrictions with regard to the contexts in which they may be used. And indeed, albeit a corner case, a typedef declaration is an init-statement and may thus be used in contexts which allow initialization statements
// C++11 (C++03) (init. statement in for loop iteration statements).
for(typedef int Foo; Foo{} != 0;) {}
// C++17 (if and switch initialization statements).
if (typedef int Foo; true) { (void)Foo{}; }
// ^^^^^^^^^^^^^^^ init-statement
switch(typedef int Foo; 0) { case 0: (void)Foo{}; }
// ^^^^^^^^^^^^^^^ init-statement
// C++20 (range-based for loop initialization statements).
std::vector<int> v{1, 2, 3};
for(typedef int Foo; Foo f : v) { (void)f; }
// ^^^^^^^^^^^^^^^ init-statement
for(typedef struct { int x; int y;} P;
// ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ init-statement
auto [x, y] : {P{1, 1}, {1, 2}, {3, 5}}) { (void)x; (void)y; }
whereas an alias-declaration is not an init-statement, and thus may not be used in contexts which allows initialization statements
// C++ 11.
for(using Foo = int; Foo{} != 0;) {}
// ^^^^^^^^^^^^^^^ error: expected expression
// C++17 (initialization expressions in switch and if statements).
if (using Foo = int; true) { (void)Foo{}; }
// ^^^^^^^^^^^^^^^ error: expected expression
switch(using Foo = int; 0) { case 0: (void)Foo{}; }
// ^^^^^^^^^^^^^^^ error: expected expression
// C++20 (range-based for loop initialization statements).
std::vector<int> v{1, 2, 3};
for(using Foo = int; Foo f : v) { (void)f; }
// ^^^^^^^^^^^^^^^ error: expected expression
In my case I have different application.properties depending on the environment, something like:
application.properties (base file)
application-dev.properties
application-qa.properties
application-prod.properties
and application.properties contains a property spring.profiles.active to pick the proper file.
For my integration tests, I created a new application-test.properties
file inside test/resources
and with the @TestPropertySource({ "/application-test.properties" })
annotation this is the file who is in charge of picking the application.properties I want depending on my needs for those tests
index(substring [, offset]) ? fixnum or nil
index(regexp [, offset]) ? fixnum or nil
Returns the index of the first occurrence of the given substring or pattern (regexp) in str. Returns nil if not found. If the second parameter is present, it specifies the position in the string to begin the search.
"hello".index('e') #=> 1
"hello".index('lo') #=> 3
"hello".index('a') #=> nil
"hello".index(?e) #=> 1
"hello".index(/[aeiou]/, -3) #=> 4
Check out ruby documents for more information.
@PostConstruct is run ONCE in first when Bean Created. the solution is create a Unused property and Do your Action in Getter method of this property and add this property to your .xhtml file like this :
<h:inputHidden value="#{loginBean.loginStatus}"/>
and in your bean code:
public void setLoginStatus(String loginStatus) {
this.loginStatus = loginStatus;
}
public String getLoginStatus() {
// Do your stuff here.
return loginStatus;
}
The Python Tutorial simply calls it 'the *
-operator'. It performs unpacking of arbitrary argument lists.
We need to use HandlerExceptionResolver
in that case.
@Component
public class RESTAuthenticationEntryPoint implements AuthenticationEntryPoint {
@Autowired
//@Qualifier("handlerExceptionResolver")
private HandlerExceptionResolver resolver;
@Override
public void commence(HttpServletRequest request, HttpServletResponse response, AuthenticationException authException) throws IOException {
resolver.resolveException(request, response, null, authException);
}
}
Also, you need to add in the exception handler class to return your object.
@RestControllerAdvice
public class GlobalExceptionHandler extends ResponseEntityExceptionHandler {
@ExceptionHandler(AuthenticationException.class)
public GenericResponseBean handleAuthenticationException(AuthenticationException ex, HttpServletResponse response){
GenericResponseBean genericResponseBean = GenericResponseBean.build(MessageKeys.UNAUTHORIZED);
genericResponseBean.setError(true);
response.setStatus(HttpStatus.UNAUTHORIZED.value());
return genericResponseBean;
}
}
may you get an error at the time of running a project because of multiple implementations of HandlerExceptionResolver
, In that case you have to add @Qualifier("handlerExceptionResolver")
on HandlerExceptionResolver
i found out why my first row was default selected and found out how to not select it by default.
By default my datagridview was the object with the first tab-stop on my windows form. Making the tab stop first on another object (maybe disabling tabstop for the datagrid at all will work to) disabled selecting the first row
This worked for me, as documented on this page:
TransformerFactory tf = TransformerFactory.newInstance();
Transformer trans = tf.newTransformer();
StringWriter sw = new StringWriter();
trans.transform(new DOMSource(document), new StreamResult(sw));
return sw.toString();
128M == 134217728
, the number you are seeing.
The memory limit is working fine. When it says it tried to allocate 32 bytes, that the amount requested by the last operation before failing.
Are you building any huge arrays or reading large text files? If so, remember to free any memory you don't need anymore, or break the task down into smaller steps.
Something like:
>>> bytes.fromhex('4a4b4c').decode('utf-8')
'JKL'
Just put the actual encoding you are using.
You can use the iOS simulator to do this. You need to enable "Developer Mode" on Safari (Preferences -> Advanced).
Then open the website you want to debug in the iOS simulator. Go back to safari and under Develop you will see the simulator and the tabs open on safari.
If you want to test an actual device, then just plug it into your computer and it should show there too.
That's how I do it.
There is indeed such a tool, Comeau's C++ compiler. . It will generate C code which you can't manually maintain, but that's no problem. You'll maintain the C++ code, and just convert to C on the fly.
basically if you already specify the year range there is no need to use mindate
and maxdate
if only year is required
There are two easy ways:
In your cpanel Go to cpanel/ softaculous/ wordpress, under the current installation, you will see the websites you have installed with the wordpress. Click the "edit detail" of the particular website and you will see your SQL database username and password.
In your server Access your FTP and view the wp-config.php
ES6 way, without mutating original data.
var projects = [
{
value: "jquery",
label: "jQuery",
desc: "the write less, do more, JavaScript library",
icon: "jquery_32x32.png"
},
{
value: "jquery-ui",
label: "jQuery UI",
desc: "the official user interface library for jQuery",
icon: "jqueryui_32x32.png"
}];
//find the index of object from array that you want to update
const objIndex = projects.findIndex(obj => obj.value === 'jquery-ui');
// make new object of updated object.
const updatedObj = { ...projects[objIndex], desc: 'updated desc value'};
// make final new array of objects by combining updated object.
const updatedProjects = [
...projects.slice(0, objIndex),
updatedObj,
...projects.slice(objIndex + 1),
];
console.log("original data=", projects);
console.log("updated data=", updatedProjects);
Have you tried :
hadoop dfs -rmr hdfs://host:port/Navi/MyDir\,\ Name
?
You could use a negative look-ahead assertion:
^(?!tbd_).+
Or a negative look-behind assertion:
(^.{1,3}$|^.{4}(?<!tbd_).*)
Or just plain old character sets and alternations:
^([^t]|t($|[^b]|b($|[^d]|d($|[^_])))).*
Observable and subject both are observable's means an observer can track them. but both of them have some unique characteristics. Further there are total 3 type of subjects each of them again have unique characteristics. lets try to to understand each of them.
you can find the practical example here on stackblitz. (You need to check the console to see the actual output)
Observables
They are cold: Code gets executed when they have at least a single observer.
Creates copy of data: Observable creates copy of data for each observer.
Uni-directional: Observer can not assign value to observable(origin/master).
Subject
They are hot: code gets executed and value gets broadcast even if there is no observer.
Shares data: Same data get shared between all observers.
bi-directional: Observer can assign value to observable(origin/master).
If are using using subject then you miss all the values that are broadcast before creation of observer. So here comes Replay Subject
ReplaySubject
They are hot: code gets executed and value get broadcast even if there is no observer.
Shares data: Same data get shared between all observers.
bi-directional: Observer can assign value to observable(origin/master). plus
Replay the message stream: No matter when you subscribe the replay subject you will receive all the broadcasted messages.
In subject and replay subject you can not set the initial value to observable. So here comes Behavioral Subject
BehaviorSubject
They are hot: code gets executed and value get broadcast even if there is no observer.
Shares data: Same data get shared between all observers.
bi-directional: Observer can assign value to observable(origin/master). plus
Replay the message stream: No matter when you subscribe the replay subject you will receive all the broadcasted messages.
You can set initial value: You can initialize the observable with default value.
I would use something along these lines...
netstat -rn | grep "default" | awk '{print $2}'
I would like to make a little bit more emphasis on some key differences between res.end()
& res.send()
with respect to response headers and why they are important.
1. res.send() will check the structure of your output and set header information accordingly.
app.get('/',(req,res)=>{
res.send('<b>hello</b>');
});
app.get('/',(req,res)=>{
res.send({msg:'hello'});
});
Where with res.end() you can only respond with text and it will not set "Content-Type"
app.get('/',(req,res)=>{
res.end('<b>hello</b>');
});
2. res.send() will set "ETag" attribute in the response header
app.get('/',(req,res)=>{
res.send('<b>hello</b>');
});
¿Why is this tag important?
The ETag HTTP response header is an identifier for a specific version of a resource. It allows caches to be more efficient, and saves bandwidth, as a web server does not need to send a full response if the content has not changed.
res.end()
will NOT set this header attribute
Note The accepted is perfectly fine - but wanted to add a version4 example because they are different enough.
import React from 'react';
import { Link } from 'react-router';
export default class Nav extends React.Component {
render() {
return (
<nav className="Nav">
<div className="Nav__container">
<Link to="/" className="Nav__brand">
<img src="logo.svg" className="Nav__logo" />
</Link>
<div className="Nav__right">
<ul className="Nav__item-wrapper">
<li className="Nav__item">
<Link className="Nav__link" to="/path1">Link 1</Link>
</li>
<li className="Nav__item">
<Link className="Nav__link" to="/path2">Link 2</Link>
</li>
<li className="Nav__item">
<Link className="Nav__link" to="/path3">Link 3</Link>
</li>
</ul>
</div>
</div>
</nav>
);
}
}
import React from 'react';
import { Link, Switch, Route } from 'react-router';
import Nav from './nav';
import Page1 from './page1';
import Page2 from './page2';
import Page3 from './page3';
export default class App extends React.Component {
render() {
return (
<div className="App">
<Router>
<div>
<Nav />
<Switch>
<Route exactly component={Landing} pattern="/" />
<Route exactly component={Page1} pattern="/path1" />
<Route exactly component={Page2} pattern="/path2" />
<Route exactly component={Page3} pattern="/path3" />
<Route component={Page404} />
</Switch>
</div>
</Router>
</div>
);
}
}
Alternatively, if you want a more dynamic nav, you can look at the excellent v4 docs: https://reacttraining.com/react-router/web/example/sidebar
A few people have asked about a page without the Nav, such as a login page. I typically approach it with a wrapper Route component
import React from 'react';
import { Link, Switch, Route } from 'react-router';
import Nav from './nav';
import Page1 from './page1';
import Page2 from './page2';
import Page3 from './page3';
const NavRoute = ({exact, path, component: Component}) => (
<Route exact={exact} path={path} render={(props) => (
<div>
<Header/>
<Component {...props}/>
</div>
)}/>
)
export default class App extends React.Component {
render() {
return (
<div className="App">
<Router>
<Switch>
<NavRoute exactly component={Landing} pattern="/" />
<Route exactly component={Login} pattern="/login" />
<NavRoute exactly component={Page1} pattern="/path1" />
<NavRoute exactly component={Page2} pattern="/path2" />
<NavRoute component={Page404} />
</Switch>
</Router>
</div>
);
}
}
<div id="msg"></div>
<!-- put above tag on body to see selected value or error -->
<script>
$(function(){
$("#HoursEntry").change(function(){
var HoursEntry = $("#HoursEntry option:selected").val();
console.log(HoursEntry);
if(HoursEntry == "")
{
$("#msg").html("Please select at least One option");
return false;
}
else
{
$("#msg").html("selected val is "+HoursEntry);
}
});
});
</script>
const
public const string MyStr;
is a compile time constant (you can use it as the default parameter for a method parameter for example), and it will not be obfuscated if you use such technology
static readonly
public static readonly string MyStr;
is runtime constant. It means that it is evaluated when the application is launched and not before. This is why it can't be used as the default parameter for a method (compilation error) for example. The value stored in it can be obfuscated.
var myOtherUrl =
"http://example.com/index.html?url=" + encodeURIComponent(myUrl).replace(/%20/g,'+');
Don't forget the /g flag to replace all encoded ' '
Write a:hover::before
instead of a::before:hover
: example.
In case you are going around and around to figure this out and none of the options above are working, it is possible you are experiencing a name space conflict of .tooltip with bootstrap and jquery.
See this answer on how to fix: jQueryUI Tooltips are competing with Twitter Bootstrap
npm has a few packages, but none have reached 1.0 yet. Best picks from npm list mail
:
[email protected]
[email protected]
[email protected]
Thanks to @LyphTEC that gave a very interesting way to open an Office file in edit mode!
It gave me the idea to change the function _DispEx
that is called when the user clicks on a file into a document library. By hacking the original function we can them be able to open a dialog (for Firefox/Chrome) and ask the user if he/she wants to readonly or edit the file:
See below the JavaScript code I used. My code is for Excel files, but it could be modified to work with Word documents too:
/**
* fix problem with Excel documents on Firefox/Chrome (see https://blog.kodono.info/wordpress/2017/02/09/how-to-open-an-excel-document-from-sharepoint-files-into-chromefirefox-in-readonlyedit-mode/)
* @param {HTMLElement} p the <A> element
* @param {HTMLEvent} a the click event
* @param {Boolean} h TRUE
* @param {Boolean} e FALSE
* @param {Boolean} g FALSE
* @param {Strin} k the ActiveX command (e.g. "SharePoint.OpenDocuments.3")
* @param {Number} c 0
* @param {String} o the activeX command, here we look at "SharePoint.OpenDocuments"
* @param {String} m
* @param {String} b the replacement URL to the xslviewer
*/
var bak_DispEx;
var modalOpenDocument; // it will be use with the modal
SP.SOD.executeOrDelayUntilEventNotified(function() {
bak_DispEx = _DispEx;
_DispEx=function(p, a, h, e, g, k, c, o, m, b, j, l, i, f, d) {
// if o==="SharePoint.OpenDocuments" && !IsClientAppInstalled(o)
// in that case we want to open ask the user if he/she wants to readonly or edit the file
var fileURL = b.replace(/.*_layouts\/xlviewer\.aspx\?id=(.*)/, "$1");
if (o === "SharePoint.OpenDocuments" && !IsClientAppInstalled(o) && /\.xlsx?$/.test(fileURL)) {
// if the URL doesn't start with http
if (!/^http/.test(fileURL)) {
fileURL = window.location.protocol + "//" + window.location.host + fileURL;
}
var ohtml = document.createElement('div');
ohtml.style.padding = "10px";
ohtml.style.display = "inline-block";
ohtml.style.width = "200px";
ohtml.style.width = "200px";
ohtml.innerHTML = '<style>'
+ '.opendocument_button { background-color:#fdfdfd; border:1px solid #ababab; color:#444; display:inline-block; padding: 7px 10px; }'
+ '.opendocument_button:hover { box-shadow: none }'
+ '#opendocument_readonly,#opendocument_edit { float:none; font-size: 100%; line-height: 1.15; margin: 0; overflow: visible; box-sizing: border-box; padding: 0; height:auto }'
+ '.opendocument_ul { list-style-type:none;margin-top:10px;margin-bottom:10px;padding-top:0;padding-bottom:0 }'
+ '</style>'
+ 'You are about to open:'
+ '<ul class="opendocument_ul">'
+ ' <li>Name: <b>'+fileURL.split("/").slice(-1)+'</b></li>'
+ ' <li>From: <b>'+window.location.hostname+'</b></li>'
+ '</ul>'
+ 'How would like to open this file?'
+ '<ul class="opendocument_ul">'
+ ' <li><label><input type="radio" name="opendocument_choices" id="opendocument_readonly" checked> Read Only</label></li>'
+ ' <li><label><input type="radio" name="opendocument_choices" id="opendocument_edit"> Edit</label></li>'
+ '</ul>'
+ '<div style="text-align: center;margin-top: 20px;"><button type="button" class="opendocument_button" style="background-color: #2d9f2d;color: #fff;" onclick="modalOpenDocument.close(document.getElementById(\'opendocument_edit\').checked)">Open</button> <button type="button" class="opendocument_button" style="margin-left:10px" onclick="modalOpenDocument.close(-1)">Cancel</button></div>';
// show the modal
modalOpenDocument=SP.UI.ModalDialog.showModalDialog({
html:ohtml,
dialogReturnValueCallback:function(ret) {
if (ret!==-1) {
if (ret === true) { // edit
// reformat the fileURL
var ext;
if (/\.xlsx?$/.test(b)) ext = "ms-excel";
if (/\.docx?$/.test(b)) ext = "ms-word"; // not currently supported
fileURL = ext + ":ofe|u|" + fileURL;
}
window.location.href = fileURL; // open the file
}
}
});
a.preventDefault();
a.stopImmediatePropagation()
a.cancelBubble = true;
a.returnValue = false;
return false;
}
return bak_DispEx.apply(this, arguments);
}
}, "sp.scriptloaded-core.js")
I use SP.SOD.executeOrDelayUntilEventNotified
to make sure the function will be executed when core.js
is loaded.
Try as saying Boost documentation:
set(Boost_USE_STATIC_LIBS ON) # only find static libs
set(Boost_USE_DEBUG_LIBS OFF) # ignore debug libs and
set(Boost_USE_RELEASE_LIBS ON) # only find release libs
set(Boost_USE_MULTITHREADED ON)
set(Boost_USE_STATIC_RUNTIME OFF)
find_package(Boost 1.66.0 COMPONENTS date_time filesystem system ...)
if(Boost_FOUND)
include_directories(${Boost_INCLUDE_DIRS})
add_executable(foo foo.cc)
target_link_libraries(foo ${Boost_LIBRARIES})
endif()
Don't forget to replace foo to your project name and components to yours!
Similarly using Bash regexp. Shall be able to snatch any key/value pair.
key="Body"
re="\"($key)\": \"([^\"]*)\""
while read -r l; do
if [[ $l =~ $re ]]; then
name="${BASH_REMATCH[1]}"
value="${BASH_REMATCH[2]}"
echo "$name=$value"
else
echo "No match"
fi
done
Regular expression can be tuned to match multiple spaces/tabs or newline(s). Wouldn't work if value has embedded "
. This is an illustration. Better to use some "industrial" parser :)
Another way is to use an array as a type, e.g.:
ObjectMapper objectMapper = new ObjectMapper();
MyPojo[] pojos = objectMapper.readValue(json, MyPojo[].class);
This way you avoid all the hassle with the Type object, and if you really need a list you can always convert the array to a list by:
List<MyPojo> pojoList = Arrays.asList(pojos);
IMHO this is much more readable.
And to make it be an actual list (that can be modified, see limitations of Arrays.asList()
) then just do the following:
List<MyPojo> mcList = new ArrayList<>(Arrays.asList(pojos));
I Solved this problem by:
step 1: C:/user/rafiq/.m2/repository --> Delete this folder
Step 2: right click on your project-->maven-->update maven project-->check only clean project-->ok.
Step 3: right click on your project-->maven-->update maven project-->check only update project-->ok.
Problem Solved.
numba
For recursive calculations which are not vectorisable, numba
, which uses JIT-compilation and works with lower level objects, often yields large performance improvements. You need only define a regular for
loop and use the decorator @njit
or (for older versions) @jit(nopython=True)
:
For a reasonable size dataframe, this gives a ~30x performance improvement versus a regular for
loop:
from numba import jit
@jit(nopython=True)
def calculator_nb(a, b, d):
res = np.empty(d.shape)
res[0] = d[0]
for i in range(1, res.shape[0]):
res[i] = res[i-1] * a[i] + b[i]
return res
df['C'] = calculator_nb(*df[list('ABD')].values.T)
n = 10**5
df = pd.concat([df]*n, ignore_index=True)
# benchmarking on Python 3.6.0, Pandas 0.19.2, NumPy 1.11.3, Numba 0.30.1
# calculator() is same as calculator_nb() but without @jit decorator
%timeit calculator_nb(*df[list('ABD')].values.T) # 14.1 ms per loop
%timeit calculator(*df[list('ABD')].values.T) # 444 ms per loop
Here's a function I have been using - tested and works on any basic data type:
// SwapBytes.h
//
// Function to perform in-place endian conversion of basic types
//
// Usage:
//
// double d;
// SwapBytes(&d, sizeof(d));
//
inline void SwapBytes(void *source, int size)
{
typedef unsigned char TwoBytes[2];
typedef unsigned char FourBytes[4];
typedef unsigned char EightBytes[8];
unsigned char temp;
if(size == 2)
{
TwoBytes *src = (TwoBytes *)source;
temp = (*src)[0];
(*src)[0] = (*src)[1];
(*src)[1] = temp;
return;
}
if(size == 4)
{
FourBytes *src = (FourBytes *)source;
temp = (*src)[0];
(*src)[0] = (*src)[3];
(*src)[3] = temp;
temp = (*src)[1];
(*src)[1] = (*src)[2];
(*src)[2] = temp;
return;
}
if(size == 8)
{
EightBytes *src = (EightBytes *)source;
temp = (*src)[0];
(*src)[0] = (*src)[7];
(*src)[7] = temp;
temp = (*src)[1];
(*src)[1] = (*src)[6];
(*src)[6] = temp;
temp = (*src)[2];
(*src)[2] = (*src)[5];
(*src)[5] = temp;
temp = (*src)[3];
(*src)[3] = (*src)[4];
(*src)[4] = temp;
return;
}
}
It's good to know that
but also know that
math.log
takes an optional second argument which allows you to specify the base:
In [22]: import math
In [23]: math.log?
Type: builtin_function_or_method
Base Class: <type 'builtin_function_or_method'>
String Form: <built-in function log>
Namespace: Interactive
Docstring:
log(x[, base]) -> the logarithm of x to the given base.
If the base not specified, returns the natural logarithm (base e) of x.
In [25]: math.log(8,2)
Out[25]: 3.0
You have to loop over the input array and add rules for each input as described here: Loop Over Rules
Here is a some code for ya:
$input = Request::all();
$rules = [];
foreach($input['name'] as $key => $val)
{
$rules['name.'.$key] = 'required|distinct|min:3';
}
$rules['amount'] = 'required|integer|min:1';
$rules['description'] = 'required|string';
$validator = Validator::make($input, $rules);
//Now check validation:
if ($validator->fails())
{
/* do something */
}
To get Token Device you can do by some steps:
1) Enable APNS (Apple Push Notification Service) for both Developer Certification and Distribute Certification, then redownload those two file.
2) Redownload both Developer Provisioning and Distribute Provisioning file.
3) In Xcode interface: setting provisioning for PROJECT and TARGETS with two file provisioning have download.
4) Finally, you need to add the code below in AppDelegate file to get Token Device (note: run app in real device).
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
[self.window addSubview:viewController.view];
[self.window makeKeyAndVisible];
NSLog(@"Registering for push notifications...");
[[UIApplication sharedApplication] registerForRemoteNotificationTypes:
(UIRemoteNotificationTypeSound | UIRemoteNotificationTypeAlert)];
return YES;
}
- (void)application:(UIApplication *)app didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken {
NSString *str = [NSString stringWithFormat:@"Device Token=%@",deviceToken];
NSLog(@"%@", str);
}
- (void)application:(UIApplication *)app didFailToRegisterForRemoteNotificationsWithError:(NSError *)err {
NSString *str = [NSString stringWithFormat: @"Error: %@", err];
NSLog(@"%@",str);
}
Your second DELETE
query was nearly correct. Just be sure to put the table name (or an alias) between DELETE
and FROM
to specify which table you are deleting from. This is simpler than using a nested SELECT
statement like in the other answers.
DELETE tableA
FROM tableA
INNER JOIN tableB u on (u.qlabel = tableA.entityrole AND u.fieldnum = tableA.fieldnum)
WHERE (LENGTH(tableA.memotext) NOT IN (8,9,10)
OR tableA.memotext NOT LIKE '%/%/%')
AND (u.FldFormat = 'Date')
DELETE q
FROM tableA q
INNER JOIN tableB u on (u.qlabel = q.entityrole AND u.fieldnum = q.fieldnum)
WHERE (LENGTH(q.memotext) NOT IN (8,9,10)
OR q.memotext NOT LIKE '%/%/%')
AND (u.FldFormat = 'Date')
More examples here:
How to Delete using INNER JOIN with SQL Server?
It looks like CLR / C# might be getting better support for Vector<> soon.
Here's an answer covering the more general question of calling another PS script from a PS script, as you may do if you were composing your scripts of many little, narrow-purpose scripts.
I found it was simply a case of using dot-sourcing. That is, you just do:
# This is Script-A.ps1
. ./Script-B.ps1 -SomeObject $variableFromScriptA -SomeOtherParam 1234;
I found all the Q/A very confusing and complicated and eventually landed upon the simple method above, which is really just like calling another script as if it was a function in the original script, which I seem to find more intuitive.
Dot-sourcing can "import" the other script in its entirety, using:
. ./Script-B.ps1
It's now as if the two files are merged.
Ultimately, what I was really missing is the notion that I should be building a module of reusable functions.
Expanding on the definitions given, the most important thing you need to know as a web-developer is that NO STATE IS SAVED between postbacks. There are ways to retain state, such as the Session or Viewstate collections in ASP.NET, but as a rule of thumb write your programs where you can recreate your state on every postback.
This is probably the biggest difference between desktop and web-based application programming, and took me months to learn to the point where I was instinctively writing this way.
You can also use python's requests library instead.
import requests
url = 'http://www.quandl.com/api/v1/datasets/FRED/GDP.json'
response = requests.get(url)
dict = response.json()
Now you can manipulate the "dict" like a python dictionary.
This is my JavaScript implementation of Algorithm P (Polar method for normal deviates) from Section 3.4.1 of Donald Knuth's book The Art of Computer Programming:
function normal_random(mean,stddev)
{
var V1
var V2
var S
do{
var U1 = Math.random() // return uniform distributed in [0,1[
var U2 = Math.random()
V1 = 2*U1-1
V2 = 2*U2-1
S = V1*V1+V2*V2
}while(S >= 1)
if(S===0) return 0
return mean+stddev*(V1*Math.sqrt(-2*Math.log(S)/S))
}
You were just missing the second half of the column statement telling it to remove the entire column, since most normal Ranges start with a Column Letter, it was looking for a number and didn't get one. The ":" gets the whole column, or row.
I think what you were looking for in your Range was this:
Range("C:C,F:F,I:I,L:L,O:O,R:R").Delete
Just change the column letters to match your needs.
The default schema for the user could be changed with the following query and avoids changing the property every time a table is to be created.
USE [DBName]
GO
ALTER USER [YourUserName] WITH DEFAULT_SCHEMA = [YourSchema]
GO
There are new features added. But, you will have to see if it is worth the upgrade. Some good improvements in Management Studio 2008 though, especially the intellisense for the Query Editor.
The Sean's solution didn't work for me initially (Android 4.2.2). I had to add a dummy activity to the same Android project and run the activity manually on the device at least once. Then the Sean's solution started to work and the BroadcastReceiver was notified after subsequent reboots.
If we want to open multiple command prompts then we could use
start cmd /k
/k
: is compulsory which will execute.
Launching many command prompts can be done as below.
start cmd /k Call rc_hub.bat 4444
start cmd /k Call rc_grid1.bat 5555
start cmd /k Call rc_grid1.bat 6666
start cmd /k Call rc_grid1.bat 5570.
I have come to point out the answer nobody seems to see here. You can fullfill all requests you have made with pure CSS and it's very simple. Just use Media Queries. Media queries can check the orientation of the user's screen, or viewport. Then you can style your images depending on the orientation.
Just set your default CSS on your images like so:
img {
width:auto;
height:auto;
max-width:100%;
max-height:100%;
}
Then use some media queries to check your orientation and that's it!
@media (orientation: landscape) { img { height:100%; } }
@media (orientation: portrait) { img { width:100%; } }
You will always get an image that scales to fit the screen, never loses aspect ratio, never scales larger than the screen, never clips or overflows.
To learn more about these media queries, you can read MDN's specs.
To center your image horizontally and vertically, just use the flex box model. Use a parent div
set to 100% width and height, like so:
div.parent {
display:flex;
position:fixed;
left:0px;
top:0px;
width:100%;
height:100%;
justify-content:center;
align-items:center;
}
With the parent div's display
set to flex
, the element is now ready to use the flex box model. The justify-content
property sets the horizontal alignment of the flex items. The align-items
property sets the vertical alignment of the flex items.
I too had wanted these exact requirements and had scoured the web for a pure CSS solution. Since none of the answers here fulfilled all of your requirements, either with workarounds or settling upon sacrificing a requirement or two, this solution really is the most straightforward for your goals; as it fulfills all of your requirements with pure CSS.
EDIT: The accepted answer will only appear to work if your images are large. Try using small images and you will see that they can never be larger than their original size.
This is code I used in Windows. It works.
for item in COOKIES.split(';'):
name,value = item.split('=', 1)
name=name.replace(' ', '').replace('\r', '').replace('\n', '')
value = value.replace(' ', '').replace('\r', '').replace('\n', '')
cookie_dict={
'name':name,
'value':value,
"domain": "", # Google Chrome
"expires": "",
'path': '/',
'httpOnly': False,
'HostOnly': False,
'Secure': False
}
self.driver_.add_cookie(cookie_dict)
I'm sad to say: We are sh*t out of luck on this one.
I'd like to refer you to the author of WhichBrowser: Everybody lies.
Basically, no browser is being honest. No matter if you use Chrome or IE, they both will tell you that they are "Mozilla Netscape" with Gecko and Safari support. Try it yourself on any of the fiddles flying around in this thread:
or any other... Try it with Chrome (which might still succeed), then try it with a recent version of IE, and you will cry. Of course, there are heuristics, to get it all right, but it will be tedious to grasp all the edge cases, and they will very likely not work anymore in a year's time.
Take your code, for example:
<div id="example"></div>
<script type="text/javascript">
txt = "<p>Browser CodeName: " + navigator.appCodeName + "</p>";
txt+= "<p>Browser Name: " + navigator.appName + "</p>";
txt+= "<p>Browser Version: " + navigator.appVersion + "</p>";
txt+= "<p>Cookies Enabled: " + navigator.cookieEnabled + "</p>";
txt+= "<p>Platform: " + navigator.platform + "</p>";
txt+= "<p>User-agent header: " + navigator.userAgent + "</p>";
document.getElementById("example").innerHTML=txt;
</script>
Chrome says:
Browser CodeName: Mozilla
Browser Name: Netscape
Browser Version: 5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/40.0.2214.115 Safari/537.36
Cookies Enabled: true
Platform: Win32
User-agent header: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/40.0.2214.115 Safari/537.36
IE says:
Browser CodeName: Mozilla
Browser Name: Netscape
Browser Version: 5.0 (Windows NT 6.1; WOW64; Trident/7.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E; InfoPath.3; rv:11.0) like Gecko
Cookies Enabled: true
Platform: Win32
User-agent header: Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E; InfoPath.3; rv:11.0) like Gecko
At least Chrome still has a string that contains "Chrome" with the exact version number. But, for IE you must extrapolate from the things it supports to actually figure it out (who else would boast that they support .NET
or Media Center
:P), and then match it against the rv:
at the very end to get the version number. Of course, even such sophisticated heuristics might very likely fail as soon as IE 12 (or whatever they want to call it) comes out.
I think you are trying to over complicate things. A simple solution is to just style your checkbox by default with the unchecked styles and then add the checked state styles.
input[type="checkbox"] {
// Unchecked Styles
}
input[type="checkbox"]:checked {
// Checked Styles
}
I apologize for bringing up an old thread but felt like it could have used a better answer.
EDIT (3/3/2016):
W3C Specs state that :not(:checked)
as their example for selecting the unchecked state. However, this is explicitly the unchecked state and will only apply those styles to the unchecked state. This is useful for adding styling that is only needed on the unchecked state and would need removed from the checked state if used on the input[type="checkbox"]
selector. See example below for clarification.
input[type="checkbox"] {
/* Base Styles aka unchecked */
font-weight: 300; // Will be overwritten by :checked
font-size: 16px; // Base styling
}
input[type="checkbox"]:not(:checked) {
/* Explicit Unchecked Styles */
border: 1px solid #FF0000; // Only apply border to unchecked state
}
input[type="checkbox"]:checked {
/* Checked Styles */
font-weight: 900; // Use a bold font when checked
}
Without using :not(:checked)
in the example above the :checked
selector would have needed to use a border: none;
to achieve the same affect.
Use the input[type="checkbox"]
for base styling to reduce duplication.
Use the input[type="checkbox"]:not(:checked)
for explicit unchecked styles that you do not want to apply to the checked state.
Originally from this blog post. We can achieve if else by using below code
<xsl:choose>
<xsl:when test="something to test">
</xsl:when>
<xsl:otherwise>
</xsl:otherwise>
</xsl:choose>
So here is what I did
<h3>System</h3>
<xsl:choose>
<xsl:when test="autoIncludeSystem/autoincludesystem_info/@mdate"> <!-- if attribute exists-->
<p>
<dd><table border="1">
<tbody>
<tr>
<th>File Name</th>
<th>File Size</th>
<th>Date</th>
<th>Time</th>
<th>AM/PM</th>
</tr>
<xsl:for-each select="autoIncludeSystem/autoincludesystem_info">
<tr>
<td valign="top" ><xsl:value-of select="@filename"/></td>
<td valign="top" ><xsl:value-of select="@filesize"/></td>
<td valign="top" ><xsl:value-of select="@mdate"/></td>
<td valign="top" ><xsl:value-of select="@mtime"/></td>
<td valign="top" ><xsl:value-of select="@ampm"/></td>
</tr>
</xsl:for-each>
</tbody>
</table>
</dd>
</p>
</xsl:when>
<xsl:otherwise> <!-- if attribute does not exists -->
<dd><pre>
<xsl:value-of select="autoIncludeSystem"/><br/>
</pre></dd> <br/>
</xsl:otherwise>
</xsl:choose>
My Output
You can install an indentator package.
Click on File > Extension Manager....
Look for the search field and type: Indentator > Install
Once Indentator is installed, you can use Ctrl + Alt + I
<html>
<head>
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<title>My Web Page</title>
</head>
<body>
<p>Content goes here.</p>
</body>
</html>
From the linked MSDN page:
Edge mode tells Windows Internet Explorer to display content in the highest mode available, which actually breaks the “lock-in” paradigm. With Internet Explorer 8, this is equivalent to IE8 mode. If a (hypothetical) future release of Internet Explorer supported a higher compatibility mode, pages set to Edge mode would appear in the highest mode supported by that version; however, those same pages would still appear in IE8 mode when viewed with Internet Explorer 8.
However, "edge" mode is not encouraged in production use:
It is recommended that Web developers restrict their use of Edge mode to test pages and other non-production uses because of the possible unexpected results of rendering page content in future versions of Windows Internet Explorer.
I honestly don't entirely understand why. But according to this, the best way to go at the moment is using IE=8
.
The context lets you provide arguments at call-time, allowing easy customization of generic pre-built helper functions.
some examples:
// stock footage:
function addTo(x){ "use strict"; return x + this; }
function pluck(x){ "use strict"; return x[this]; }
function lt(x){ "use strict"; return x < this; }
// production:
var r = [1,2,3,4,5,6,7,8,9];
var words = "a man a plan a canal panama".split(" ");
// filtering numbers:
_.filter(r, lt, 5); // elements less than 5
_.filter(r, lt, 3); // elements less than 3
// add 100 to the elements:
_.map(r, addTo, 100);
// encode eggy peggy:
_.map(words, addTo, "egg").join(" ");
// get length of words:
_.map(words, pluck, "length");
// find words starting with "e" or sooner:
_.filter(words, lt, "e");
// find all words with 3 or more chars:
_.filter(words, pluck, 2);
Even from the limited examples, you can see how powerful an "extra argument" can be for creating re-usable code. Instead of making a different callback function for each situation, you can usually adapt a low-level helper. The goal is to have your custom logic bundling a verb and two nouns, with minimal boilerplate.
Admittedly, arrow functions have eliminated a lot of the "code golf" advantages of generic pure functions, but the semantic and consistency advantages remain.
I always add "use strict"
to helpers to provide native [].map()
compatibility when passing primitives. Otherwise, they are coerced into objects, which usually still works, but it's faster and safer to be type-specific.
If using the Gitlab Docker image:
sudo cat /srv/gitlab/data/gitlab-rails/VERSION
Example output:
12.1.3
Plain JavaScript:
document.getElementById('form_id').action; //Will retrieve it
document.getElementById('form_id').action = "script.php"; //Will set it
Using jQuery...
$("#form_id").attr("action"); //Will retrieve it
$("#form_id").attr("action", "/script.php"); //Will set it
pyinstaller --clean --onefile --icon=default.ico Registry.py
It works for Me
you can detect offline cross-browser way easily like below
var randomValue = Math.floor((1 + Math.random()) * 0x10000)
$.ajax({
type: "HEAD",
url: "http://yoururl.com?rand=" + randomValue,
contentType: "application/json",
error: function(response) { return response.status == 0; },
success: function() { return true; }
});
you can replace yoururl.com by document.location.pathname
.
The crux of the solution is, try to connect to your domain name, if you are not able to connect - you are offline. works cross browser.
I use this helper:
public static class ObjectToDictionaryHelper
{
public static IDictionary<string, object> ToDictionary(this object source)
{
return source.ToDictionary<object>();
}
public static IDictionary<string, T> ToDictionary<T>(this object source)
{
if (source == null)
ThrowExceptionWhenSourceArgumentIsNull();
var dictionary = new Dictionary<string, T>();
foreach (PropertyDescriptor property in TypeDescriptor.GetProperties(source))
AddPropertyToDictionary<T>(property, source, dictionary);
return dictionary;
}
private static void AddPropertyToDictionary<T>(PropertyDescriptor property, object source, Dictionary<string, T> dictionary)
{
object value = property.GetValue(source);
if (IsOfType<T>(value))
dictionary.Add(property.Name, (T)value);
}
private static bool IsOfType<T>(object value)
{
return value is T;
}
private static void ThrowExceptionWhenSourceArgumentIsNull()
{
throw new ArgumentNullException("source", "Unable to convert object to a dictionary. The source object is null.");
}
}
the usage is just to call .ToDictionary()
on an object
Hope it helps.
If you're using SQL Server, you could use SQL Server Profiler (if you have it) to view the command string that is actually executed. That would be useful for copy/paste testing purpuses but not for logging I'm afraid.
I was using Maven in eclipse and I did not want to have an additional copy of the properties file in the root folder. You can do the following in eclipse:
A couple of plain old foreach
loops provides a clean solution:
foreach (XElement level1Element in XElement.Load("data.xml").Elements("level1"))
{
result.AppendLine(level1Element.Attribute("name").Value);
foreach (XElement level2Element in level1Element.Elements("level2"))
{
result.AppendLine(" " + level2Element.Attribute("name").Value);
}
}
To remove the variable from the current command session without removing it permanently, use the regular built-in set
command - just put nothing after the equals sign:
set FOOBAR=
To confirm, run set
with no arguments and check the current environment. The variable should be missing from the list entirely.
Note: this will only remove the variable from the current environment - it will not persist the change to the registry. When a new command process is started, the variable will be back.
A quick google pointed me to this page. It explains that from sql server 2005 onwards you can set the default schema of a user with the ALTER USER statement. Unfortunately, that means that you change it permanently, so if you need to switch between schemas, you would need to set it every time you execute a stored procedure or a batch of statements. Alternatively, you could use the technique described here.
If you are using sql server 2000 or older this page explains that users and schemas are then equivalent. If you don't prepend your table name with a schema\user, sql server will first look at the tables owned by the current user and then the ones owned by the dbo to resolve the table name. It seems that for all other tables you must prepend the schema\user.
The method version
on ionic
object returns the current version in string
format.
<style type="text/css">
/* Sticky footer styles
-------------------------------------------------- */
html,
body {
height: 100%;
/* The html and body elements cannot have any padding or margin. */
}
/* Wrapper for page content to push down footer */
#wrap {
min-height: 100%;
height: auto !important;
height: 100%;
/* Negative indent footer by it's height */
margin: 0 auto -60px;
}
/* Set the fixed height of the footer here */
#push,
#footer {
height: 60px;
}
#footer {
background-color: #f5f5f5;
}
/* Lastly, apply responsive CSS fixes as necessary */
@media (max-width: 767px) {
#footer {
margin-left: -20px;
margin-right: -20px;
padding-left: 20px;
padding-right: 20px;
}
}
/* Custom page CSS
-------------------------------------------------- */
/* Not required for template or sticky footer method. */
.container {
width: auto;
max-width: 680px;
}
.container .credit {
margin: 20px 0;
}
</style>
<div id="wrap">
<!-- Begin page content -->
<div class="container">
<div class="page-header">
<h1>Sticky footer</h1>
</div>
<p class="lead">Pin a fixed-height footer to the bottom of the viewport in desktop browsers with this custom HTML and CSS.</p>
<p>Use <a href="./sticky-footer-navbar.html">the sticky footer</a> with a fixed navbar if need be, too.</p>
</div>
<div id="push"></div>
</div>
<div id="footer">
<div class="container">
<p class="muted credit">Example courtesy <a href="http://martinbean.co.uk">Martin Bean</a> and <a href="http://ryanfait.com/sticky-footer/">Ryan Fait</a>.</p>
</div>
</div>
the problem occurs because of the name of column is in camel case internally it wraps it in " "(double quotes) to solve this, at the time of inserting values in table use single quotes ('')
e.g. insert into schema_name.table_name values(' ',' ',' ');
It specifies the size of the log file to trigger rotation. For example size 50M
will trigger a log rotation once the file is 50MB or greater in size. You can use the suffix M
for megabytes, k
for kilobytes, and G
for gigabytes. If no suffix is used, it will take it to mean bytes. You can check the example at the end. There are three directives available size
, maxsize
, and minsize
. According to manpage:
minsize size
Log files are rotated when they grow bigger than size bytes,
but not before the additionally specified time interval (daily,
weekly, monthly, or yearly). The related size option is simi-
lar except that it is mutually exclusive with the time interval
options, and it causes log files to be rotated without regard
for the last rotation time. When minsize is used, both the
size and timestamp of a log file are considered.
size size
Log files are rotated only if they grow bigger then size bytes.
If size is followed by k, the size is assumed to be in kilo-
bytes. If the M is used, the size is in megabytes, and if G is
used, the size is in gigabytes. So size 100, size 100k, size
100M and size 100G are all valid.
maxsize size
Log files are rotated when they grow bigger than size bytes even before
the additionally specified time interval (daily, weekly, monthly,
or yearly). The related size option is similar except that it
is mutually exclusive with the time interval options, and it causes
log files to be rotated without regard for the last rotation time.
When maxsize is used, both the size and timestamp of a log file are
considered.
Here is an example:
"/var/log/httpd/access.log" /var/log/httpd/error.log {
rotate 5
mail [email protected]
size 100k
sharedscripts
postrotate
/usr/bin/killall -HUP httpd
endscript
}
Here is an explanation for both files /var/log/httpd/access.log
and /var/log/httpd/error.log
. They are rotated whenever it grows over 100k in size, and the old logs files are mailed (uncompressed) to [email protected]
after going through 5 rotations, rather than being removed. The sharedscripts
means that the postrotate
script will only be run once (after the old logs have been compressed), not once for each log which is rotated. Note that the double quotes around the first filename at the beginning of this section allows logrotate to rotate logs with spaces in the name. Normal shell quoting rules apply, with ,
, and \
characters supported.
instead of overwriting, create it as different css and call it in your element as other css(multiple css).
Something like:
.flex-control-thumbs li
{ margin: 0; }
Internal CSS:
.additional li
{width: 25%; float: left;}
<ul class="flex-control-thumbs additional"> </ul> /* assuming parent is ul */
Any of the above solutions didn't work for me. I got ModuleNotFoundError: No module named whtever
error.
So my solution was importing like below
from . import filename # without .py
inside my first file I have defined function fun like below
# file name is firstFile.py
def fun():
print('this is fun')
inside the second file lets say I want to call the function fun
from . import firstFile
def secondFunc():
firstFile.fun() # calling `fun` from the first file
secondFunc() # calling the function `secondFunc`
.live() is used if elements are being added after the initial page load. Say you have a button which gets added by an AJAX call after the page gets loaded. This new button will not be accessible using .click(), so you'll have to use .live('click')
This is the most common technique I've seen:
function getUserIP() {
if( array_key_exists('HTTP_X_FORWARDED_FOR', $_SERVER) && !empty($_SERVER['HTTP_X_FORWARDED_FOR']) ) {
if (strpos($_SERVER['HTTP_X_FORWARDED_FOR'], ',')>0) {
$addr = explode(",",$_SERVER['HTTP_X_FORWARDED_FOR']);
return trim($addr[0]);
} else {
return $_SERVER['HTTP_X_FORWARDED_FOR'];
}
}
else {
return $_SERVER['REMOTE_ADDR'];
}
}
Note that it does not guarantee it you will get always the correct user IP because there are many ways to hide it.
Currently experienced this problem with my Nexus 5, when attempting to sideload latest 4.4.1 OTA update via stock recovery.
Solution:
You can only use Core Graphics (Quartz, 2D only) transforms directly applied to a UIView's transform property. To get the effects in coverflow, you'll have to use CATransform3D, which are applied in 3-D space, and so can give you the perspective view you want. You can only apply CATransform3Ds to layers, not views, so you're going to have to switch to layers for this.
Check out the "CovertFlow" sample that comes with Xcode. It's mac-only (ie not for iPhone), but a lot of the concepts transfer well.
If you really want to understand ANSI C 89, I need to correct you in one thing; In ANSI C 89 the difference between the following functions:
int main()
int main(void)
int main(int argc, char* argv[])
is:
int main()
int main(void)
int main(int argc, char * argv[])
About when using each of the functions
int main(void)
int main(int argc, char * argv[])
About void main()
In ANSI C 89, when using void main
and compiling the project AS -ansi -pedantic
(in Ubuntu, e.g)
you will receive a warning indicating that your main function is of type void and not of type int, but you will be able to run the project.
Most C developers tend to use int main()
on all of its variants, though void main()
will also compile.
Reducing the image size before output results in something that looks sharper, in my case:
convert -density 300 a.pdf -resize 25% a.png
If you need 5 random numbers between 1 and 15, you should do:
var_dump(getRandomNumbers(1, 15, 5));
function getRandomNumbers($min, $max, $count)
{
if ($count > (($max - $min)+1))
{
return false;
}
$values = range($min, $max);
shuffle($values);
return array_slice($values,0, $count);
}
It will return false if you specify a count value larger then the possible range of numbers.
If the size of the circles corresponds to the square of the parameter in s=parameter
, then assign a square root to each element you append to your size array, like this: s=[1, 1.414, 1.73, 2.0, 2.24]
such that when it takes these values and returns them, their relative size increase will be the square root of the squared progression, which returns a linear progression.
If I were to square each one as it gets output to the plot: output=[1, 2, 3, 4, 5]
. Try list interpretation: s=[numpy.sqrt(i) for i in s]
you can populate the data you want with a simple callback function,
let's say we have a list named lst
that we want to populate,
we have a function that pupulates pupulates list,
const lst = [];
const populateData = (data) => {lst.push(data)}
now we can pass the callback function to the function which is making the axios call and we can pupulate the list when we get data from response.
now we make our function that makes the request and pass populateData
as a callback function.
function axiosTest (populateData) {
axios.get(url)
.then(function(response){
populateData(response.data);
})
.catch(function(error){
console.log(error);
});
}
def bubbleSort(alist):
if len(alist) <= 1:
return alist
for i in range(0,len(alist)):
print "i is :%d",i
for j in range(0,i):
print "j is:%d",j
print "alist[i] is :%d, alist[j] is :%d"%(alist[i],alist[j])
if alist[i] > alist[j]:
alist[i],alist[j] = alist[j],alist[i]
return alist
alist = [54,26,93,17,77,31,44,55,20,-23,-34,16,11,11,11]
print bubbleSort(alist)
Reading between the lines - Is this an innodb database? In which case the actual data is normally stored in that directory under the name ibdata1. This file contains all your tables unless you specifically set up mysql to use one-file-per-table (innodb-file-per-table)
Your object can also implement the Parcelable interface. Then you can use the Bundle.putParcelable()
method and pass your object between activities within intent.
The Photostream application uses this approach and may be used as a reference.
With less jQuery:
<select name="ddlCodes"
onchange="$('#txtEntry2').text(this.options[this.selectedIndex].value);">
this.options[this.selectedIndex].value
is plain JavaScript.
(Source: German SelfHTML)
JPA is a specification that you implement in your data layer to perform db opertations, OR mappings and other required tasks.
Since it is just a specification, you need a tool to have it implemented. That tool can be either Hibernate, TopLink, iBatis, spring-data etc.
You don't necessarily require JPA if you are using Hibernate in your Data Layer. But if you use JPA specification for Hibernate, then it will make switching to other ORM tools like iBatis, TopLink easy in future, because the specification is common for others as well.
*(if you remember, you do import javax.persistence.*;
when you use annotations for OR mapping (like @Id, @Column, @GeneratedValue etc.) in Hibernate, that's where you are using JPA under Hibernate, you can use JPA's @Query & other features as well)
Try this
$('.slidingDiv').toggle("slide", {direction: "right" }, 1000);
What I ended up doing is:
internal void LoadExternalData() {
FileStream file;
if (TryOpenRead("filepath/filename", 5, out file)) {
using (file)
using (StreamReader reader = new StreamReader(file)) {
// do something
}
}
}
internal bool TryOpenRead(string path, int timeout, out FileStream file) {
bool isLocked = true;
bool condition = true;
do {
try {
file = File.OpenRead(path);
return true;
}
catch (IOException e) {
var errorCode = Marshal.GetHRForException(e) & ((1 << 16) - 1);
isLocked = errorCode == 32 || errorCode == 33;
condition = (isLocked && timeout > 0);
if (condition) {
// we only wait if the file is locked. If the exception is of any other type, there's no point on keep trying. just return false and null;
timeout--;
new System.Threading.ManualResetEvent(false).WaitOne(1000);
}
}
}
while (condition);
file = null;
return false;
}
The problem with Get-Credential
is that it will always prompt for a password. There is a way around this however but it involves storing the password as a secure string on the filesystem.
The following article explains how this works:
In summary, you create a file to store your password (as an encrypted string). The following line will prompt for a password then store it in c:\mysecurestring.txt
as an encrypted string. You only need to do this once:
read-host -assecurestring | convertfrom-securestring | out-file C:\mysecurestring.txt
Wherever you see a -Credential
argument on a PowerShell command then it means you can pass a PSCredential
. So in your case:
$username = "domain01\admin01"
$password = Get-Content 'C:\mysecurestring.txt' | ConvertTo-SecureString
$cred = new-object -typename System.Management.Automation.PSCredential `
-argumentlist $username, $password
$serverNameOrIp = "192.168.1.1"
Restart-Computer -ComputerName $serverNameOrIp `
-Authentication default `
-Credential $cred
<any other parameters relevant to you>
You may need a different -Authentication
switch value because I don't know your environment.
Bit late to the party, but was surprised not to see what I think is the simplest solution here:
import io
import subprocess
proc = subprocess.Popen(["prog", "arg"], stdout=subprocess.PIPE)
for line in io.TextIOWrapper(proc.stdout, encoding="utf-8"): # or another encoding
# do something with line
(This requires Python 3.)
MySQL queries are not case-sensitive by default. Following is a simple query that is looking for 'value'. However it will return 'VALUE', 'value', 'VaLuE', etc…
SELECT * FROM `table` WHERE `column` = 'value'
The good news is that if you need to make a case-sensitive query, it is very easy to do using the BINARY
operator, which forces a byte by byte comparison:
SELECT * FROM `table` WHERE BINARY `column` = 'value'
Depending on how often you use this in your code you could consider the following:
macro
#define SIGN(x) ( (x) >= 0 )
Inline function
inline int sign(int x)
{
return x >= 0;
}
Then you would just go:
bigInt.sign = sign(number);
If you have JQuery loaded already, you can just do this:
$('body').css('background-image', 'url(../images/backgrounds/header-top.jpg)');
EDIT:
First load JQuery in the head tag:
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js" type="text/javascript"></script>
Then call the Javascript to change the background image when something happens on the page, like when it finishes loading:
<script type="text/javascript">
$(document).ready(function() {
$('body').css('background-image', 'url(../images/backgrounds/header-top.jpg)');
});
</script>
Tested on PostgreSQL 9.5 :
-- only digits
select * from books where title ~ '^[0-9]*$';
or,
select * from books where title SIMILAR TO '[0-9]*';
-- start with digit
select * from books where title ~ '^[0-9]+';
Since 9.6 this is a lot easier as it introduced the function pg_blocking_pids()
to find the sessions that are blocking another session.
So you can use something like this:
select pid,
usename,
pg_blocking_pids(pid) as blocked_by,
query as blocked_query
from pg_stat_activity
where cardinality(pg_blocking_pids(pid)) > 0;
One small point to Andy Hayden's solution – it doesn't work (anymore?) because np.nan == np.nan
yields False
, so the replace
function doesn't actually do anything.
What worked for me was this:
df['b'] = df['b'].apply(lambda x: x if not np.isnan(x) else -1)
(At least that's the behavior for Pandas 0.19.2. Sorry to add it as a different answer, I do not have enough reputation to comment.)
YourModel::where(function ($query) use($a,$b) {
$query->where('a','=',$a)
->orWhere('b','=', $b);
})->where(function ($query) use ($c,$d) {
$query->where('c','=',$c)
->orWhere('d','=',$d);
});
On Mac gcc is installed by default in /usr/local/bin
To run C:
gcc -o tutor tutor.c
Remove the comma?
select /*+USE_HASH( a b ) */ to_char(date, 'MM/DD/YYYY HH24:MI:SS') as LABEL,
ltrim(rtrim(substr(oled, 9, 16))) as VALUE
from rrfh a, rrf b
where ltrim(rtrim(substr(oled, 1, 9))) = 'stata kish'
and a.xyz = b.xyz
Have a look at FROM
SELECTING from multiple tables You can include multiple tables in the FROM clause by listing the tables with a comma in between each table name
If you want the String
composed of the last three characters, you can use substring(int)
:
String new_word = word.substring(word.length() - 3);
If you actually want them as a character array, you should write
char[] buffer = new char[3];
int length = word.length();
word.getChars(length - 3, length, buffer, 0);
The first two arguments to getChars
denote the portion of the string you want to extract. The third argument is the array into which that portion will be put. And the last argument gives the position in the buffer where the operation starts.
If the string has less than three characters, you'll get an exception in either of the above cases, so you might want to check for that.
use the ternary operator ?:
change this
<?php if ($requestVars->_name == '') echo $redText; ?>
with
<?php echo ($requestVars->_name == '') ? $redText : ''; ?>
In short
// (Condition)?(thing's to do if condition true):(thing's to do if condition false);
The capitalization is wrong, and you have an extra argument.
Do this instead:
$('img#thumb').removeAttr('id');
For future reference, there aren't any jQuery methods that begin with a capital letter. They all take the same form as this one, starting with a lower case, and the first letter of each joined "word" is upper case.
I usually do what SBJ proposes, but the other way around. I simply find it easier to understand my code by checking for positive results instead of double negatives. You might be asking for how to check for empty EdiTexts, but what you really want to know is if it has any content and not that it is not empty.
Like so:
private boolean hasContent(EditText et) {
// Always assume false until proven otherwise
boolean bHasContent = false;
if (et.getText().toString().trim().length() > 0) {
// Got content
bHasContent = true;
}
return bHasContent;
}
As SBJ I prefer to return "has no content" (or false
) as default to avoid exceptions because I borked my content-check. That way you will be absolutely certain that a true
has been "approved" by your checks.
I also think the if
calling it looks a bit cleaner as well:
if (hasContent(myEditText)) {
// Act upon content
} else {
// Got no content!
}
It is very much dependent on preference, but i find this easier to read. :)
Try http://php.net/manual/en/curl.examples-basic.php :)
<?php
$ch = curl_init("http://www.example.com/");
$fp = fopen("example_homepage.txt", "w");
curl_setopt($ch, CURLOPT_FILE, $fp);
curl_setopt($ch, CURLOPT_HEADER, 0);
$output = curl_exec($ch);
curl_close($ch);
fclose($fp);
?>
As the documentation says:
The basic idea behind the cURL functions is that you initialize a cURL session using the curl_init(), then you can set all your options for the transfer via the curl_setopt(), then you can execute the session with the curl_exec() and then you finish off your session using the curl_close().
Firstly, the Instagram API endpoint "tags" required OAuth authentication.
You can query results for a particular hashtag (snowy in this case) using the following url
It is rate limited to 5000 (X-Ratelimit-Limit:5000) per hour
https://api.instagram.com/v1/tags/snowy/media/recent
Sample response
{
"pagination": {
"next_max_tag_id": "1370433362010",
"deprecation_warning": "next_max_id and min_id are deprecated for this endpoint; use min_tag_id and max_tag_id instead",
"next_max_id": "1370433362010",
"next_min_id": "1370443976800",
"min_tag_id": "1370443976800",
"next_url": "https://api.instagram.com/v1/tags/snowy/media/recent?access_token=40480112.1fb234f.4866541998fd4656a2e2e2beaa5c4bb1&max_tag_id=1370433362010"
},
"meta": {
"code": 200
},
"data": [
{
"attribution": null,
"tags": [
"snowy"
],
"type": "image",
"location": null,
"comments": {
"count": 0,
"data": []
},
"filter": null,
"created_time": "1370418343",
"link": "http://instagram.com/p/aK1yrGRi3l/",
"likes": {
"count": 1,
"data": [
{
"username": "iri92lol",
"profile_picture": "http://images.ak.instagram.com/profiles/profile_404174490_75sq_1370417509.jpg",
"id": "404174490",
"full_name": "Iri"
}
]
},
"images": {
"low_resolution": {
"url": "http://distilleryimage1.s3.amazonaws.com/ecf272a2cdb311e2990322000a9f192c_6.jpg",
"width": 306,
"height": 306
},
"thumbnail": {
"url": "http://distilleryimage1.s3.amazonaws.com/ecf272a2cdb311e2990322000a9f192c_5.jpg",
"width": 150,
"height": 150
},
"standard_resolution": {
"url": "http://distilleryimage1.s3.amazonaws.com/ecf272a2cdb311e2990322000a9f192c_7.jpg",
"width": 612,
"height": 612
}
},
"users_in_photo": [],
"caption": {
"created_time": "1370418353",
"text": "#snowy",
"from": {
"username": "iri92lol",
"profile_picture": "http://images.ak.instagram.com/profiles/profile_404174490_75sq_1370417509.jpg",
"id": "404174490",
"full_name": "Iri"
},
"id": "471425773832908504"
},
"user_has_liked": false,
"id": "471425689728724453_404174490",
"user": {
"username": "iri92lol",
"website": "",
"profile_picture": "http://images.ak.instagram.com/profiles/profile_404174490_75sq_1370417509.jpg",
"full_name": "Iri",
"bio": "",
"id": "404174490"
}
}
}
You can play around here :
You need to use "Authentication" as OAuth 2 and will be prompted to signin via Instagram. Post that you might have to reneter the "tag-name" in "Template" section.
All the pagination related data is available in the "pagination" parameter in the response and use it's "next_url" to query for the next set of result.
Unfortunately, this is not possible. Per the spec:
Generated content does not alter the document tree. In particular, it is not fed back to the document language processor (e.g., for reparsing).
In other words, for string values this means the value is always treated literally. It is never interpreted as markup, regardless of the document language in use.
As an example, using the given CSS with the following HTML:
<h1 class="header">Title</h1>
... will result in the following output:
The GNU assembler is probably already installed on your system. Try man as
to see full usage information. You can use as
to compile individual files and ld to link if you really, really want to.
However, GCC makes a great front-end. It can assemble .s files for you. For example:
$ cat >hello.s <<"EOF"
.section .rodata # read-only static data
.globl hello
hello:
.string "Hello, world!" # zero-terminated C string
.text
.global main
main:
push %rbp
mov %rsp, %rbp # create a stack frame
mov $hello, %edi # put the address of hello into RDI
call puts # as the first arg for puts
mov $0, %eax # return value = 0. Normally xor %eax,%eax
leave # tear down the stack frame
ret # pop the return address off the stack into RIP
EOF
$ gcc hello.s -no-pie -o hello
$ ./hello
Hello, world!
The code above is x86-64. If you want to make a position-independent executable (PIE), you'd need lea hello(%rip), %rdi
, and call puts@plt
.
A non-PIE executable (position-dependent) can use 32-bit absolute addressing for static data, but a PIE should use RIP-relative LEA. (See also Difference between movq and movabsq in x86-64 neither movq
nor movabsq
are a good choice.)
If you wanted to write 32-bit code, the calling convention is different, and RIP-relative addressing isn't available. (So you'd push $hello
before the call, and pop the stack args after.)
You can also compile C/C++ code directly to assembly if you're curious how something works:
$ cat >hello.c <<EOF
#include <stdio.h>
int main(void) {
printf("Hello, world!\n");
return 0;
}
EOF
$ gcc -S hello.c -o hello.s
See also How to remove "noise" from GCC/clang assembly output? for more about looking at compiler output, and writing useful small functions that will compile to interesting output.
Assuming little endianness and sizeof(char) == 1, you could do that (something like this was suggested by MikeBrom).
char* txt = "B1";
int tst = *(int*)txt;
if ((tst & 0x00FFFFFF) == '1B')
printf("B1!\n");
It could be generalized for BE case.
In .NET System.String (aka string) is a immutable object. That means when you create an object you can not change it's value afterwards. You can only recreate a immutable object.
System.Text.StringBuilder is mutable equivalent of System.String and you can chane its value
For Example:
class Program
{
static void Main(string[] args)
{
System.String str = "inital value";
str = "\nsecond value";
str = "\nthird value";
StringBuilder sb = new StringBuilder();
sb.Append("initial value");
sb.AppendLine("second value");
sb.AppendLine("third value");
}
}
Generates following MSIL : If you investigate the code. You will see that whenever you chane an object of System.String you are actually creating new one. But in System.Text.StringBuilder whenever you change the value of text you dont recreate the object.
.method private hidebysig static void Main(string[] args) cil managed
{
.entrypoint
// Code size 62 (0x3e)
.maxstack 2
.locals init ([0] string str,
[1] class [mscorlib]System.Text.StringBuilder sb)
IL_0000: nop
IL_0001: ldstr "inital value"
IL_0006: stloc.0
IL_0007: ldstr "\nsecond value"
IL_000c: stloc.0
IL_000d: ldstr "\nthird value"
IL_0012: stloc.0
IL_0013: newobj instance void [mscorlib]System.Text.StringBuilder::.ctor()
IL_0018: stloc.1
IL_0019: ldloc.1
IL_001a: ldstr "initial value"
IL_001f: callvirt instance class [mscorlib]System.Text.StringBuilder [mscorlib]System.Text.StringBuilder::Append(string)
IL_0024: pop
IL_0025: ldloc.1
IL_0026: ldstr "second value"
IL_002b: callvirt instance class [mscorlib]System.Text.StringBuilder [mscorlib]System.Text.StringBuilder::AppendLine(string)
IL_0030: pop
IL_0031: ldloc.1
IL_0032: ldstr "third value"
IL_0037: callvirt instance class [mscorlib]System.Text.StringBuilder [mscorlib]System.Text.StringBuilder::AppendLine(string)
IL_003c: pop
IL_003d: ret
} // end of method Program::Main
In the age of PSR-0 / PSR-4
autoloaders, it may be completely unnecessary to use any of the statements if all you need is to make some functions / classes available to your code (of course, you still need to require_once
autoloader itself in your bootstrap file and include
templates if you still use PHP as a template engine).
To answer the specific questions...
I'm using VS2008. Can somebody please suggest some online references or books where I can find out more about how to deal with them?
This link will give you a good introduction into Makefiles by mapping it with Visual Studio.
Introduction to Makefiles for Visual Studio developers
I heard a lot about makefiles and how they simplify the compilation process.
Makefiles are powerful and flexible but may not be the best solution to simplify the process. Consider CMake which abstracts the build process well which is explained in this link.
You just make div
s like this:
<div style="width:100px; height: 100px; border:1px solid; overflow:hidden; ">
<br/>
<div style="position:inherit; width: 200px; height:200px; background:yellow;">
<br/>
<div style="position:absolute; width: 500px; height:50px; background:Pink; z-index: 99;">
<br/>
</div>
</div>
</div>
I hope this code will help you :)
All of these answers are turned off the logging at creation time.
But what if we need to turn off the logging on runtime ?
By runtime i mean after initializing the sequelize
object using new Sequelize(..
function.
I peeked into the github source, found a way to turn off logging in runtime.
// Somewhere your code, turn off the logging
sequelize.options.logging = false
// Somewhere your code, turn on the logging
sequelize.options.logging = true
In ImageMagick, you can do "supersampling". You specify a large density and then resize down as much as desired for the final output size. For example with your image:
convert -density 600 test.pdf -background white -flatten -resize 25% test.png
Download the image to view at full resolution for comparison..
I do not recommend saving to JPG if you are expecting to do further processing.
If you want the output to be the same size as the input, then resize to the inverse of the ratio of your density to 72. For example, -density 288 and -resize 25%. 288=4*72 and 25%=1/4
The larger the density the better the resulting quality, but it will take longer to process.
this may help for auto adjusting the image height having image 100% width
image: { width: "100%", resizeMode: "center" "contain", height: undefined, aspectRatio: 1, }
truncate tableName
That is what you are looking for.
Truncate will delete all records in the table, emptying it.
The simplest way to find the framework version of the current .NET project is:
To complete André's answer, an ant solution could be like the one described in Emacs, JDEE, Ant, and the Eclipse Java Compiler, as in:
<javac
srcdir="${src}"
destdir="${build.dir}/classes">
<compilerarg
compiler="org.eclipse.jdt.core.JDTCompilerAdapter"
line="-warn:+unused -Xemacs"/>
<classpath refid="compile.classpath" />
</javac>
The compilerarg element also allows you to pass in additional command line args to the eclipse compiler.
You can find a full ant script example here which would be invoked in a command line with:
java -cp C:/eclipse-SDK-3.4-win32/eclipse/plugins/org.eclipse.equinox.launcher_1.0.100.v20080509-1800.jar org.eclipse.core.launcher.Main -data "C:\Documents and Settings\Administrator\workspace" -application org.eclipse.ant.core.antRunner -buildfile build.xml -verbose
BUT all that involves ant, which is not what Keith is after.
For a batch compilation, please refer to Compiling Java code, especially the section "Using the batch compiler"
The batch compiler class is located in the JDT Core plug-in. The name of the class is org.eclipse.jdt.compiler.batch.BatchCompiler. It is packaged into plugins/org.eclipse.jdt.core_3.4.0..jar. Since 3.2, it is also available as a separate download. The name of the file is ecj.jar.
Since 3.3, this jar also contains the support for jsr199 (Compiler API) and the support for jsr269 (Annotation processing). In order to use the annotations processing support, a 1.6 VM is required.
Running the batch compiler From the command line would give
java -jar org.eclipse.jdt.core_3.4.0<qualifier>.jar -classpath rt.jar A.java
or:
java -jar ecj.jar -classpath rt.jar A.java
All java compilation options are detailed in that section as well.
The difference with the Visual Studio command line compilation feature is that Eclipse does not seem to directly read its .project and .classpath in a command-line argument. You have to report all information contained in the .project and .classpath in various command-line options in order to achieve the very same compilation result.
So, then short answer is: "yes, Eclipse kind of does." ;)
# -i (inplace)
sed -i 's/[\d128-\d255]//g' FILENAME
search your code you must be referring to color in color.xml
in an xml drawable.
go and give hex code instead of referencing....
Example:
in drawable.xml
you must have called
android:fillColor="@color/blue"
change it to android:fillColor="#ffaacc"
hope it solve your problem...
Introductory Note I'm inclined to post a few clarifications since some of the answers here were a little misleading (if not incorrect).
The answer is NO, you cannot simply pass a base64 encoded parameter within a URL query string since plus signs are converted to a SPACE inside the $_GET global array. In other words, if you sent test.php?myVar=stringwith+sign to
//test.php
print $_GET['myVar'];
the result would be:
stringwith sign
The easy way to solve this is to simply urlencode()
your base64 string before adding it to the query string to escape the +, =, and / characters to %## codes.
For instance, urlencode("stringwith+sign")
returns stringwith%2Bsign
When you process the action, PHP takes care of decoding the query string automatically when it populates the $_GET global. For example, if I sent test.php?myVar=stringwith%2Bsign to
//test.php
print $_GET['myVar'];
the result would is:
stringwith+sign
You do not want to urldecode()
the returned $_GET string as +'s will be converted to spaces.
In other words if I sent the same test.php?myVar=stringwith%2Bsign to
//test.php
$string = urldecode($_GET['myVar']);
print $string;
the result is an unexpected:
stringwith sign
It would be safe to rawurldecode()
the input, however, it would be redundant and therefore unnecessary.
There are several scenarios to consider. First of all, you need to check the type of your object. You can simply call GetType() for this. If the type does not implement IDynamicMetaObjectProvider, then you can use reflection same as for any other object. Something like:
var propertyInfo = test.GetType().GetProperties();
However, for IDynamicMetaObjectProvider implementations, the simple reflection doesn't work. Basically, you need to know more about this object. If it is ExpandoObject (which is one of the IDynamicMetaObjectProvider implementations), you can use the answer provided by itowlson. ExpandoObject stores its properties in a dictionary and you can simply cast your dynamic object to a dictionary.
If it's DynamicObject (another IDynamicMetaObjectProvider implementation), then you need to use whatever methods this DynamicObject exposes. DynamicObject isn't required to actually "store" its list of properties anywhere. For example, it might do something like this (I'm reusing an example from my blog post):
public class SampleObject : DynamicObject
{
public override bool TryGetMember(GetMemberBinder binder, out object result)
{
result = binder.Name;
return true;
}
}
In this case, whenever you try to access a property (with any given name), the object simply returns the name of the property as a string.
dynamic obj = new SampleObject();
Console.WriteLine(obj.SampleProperty);
//Prints "SampleProperty".
So, you don't have anything to reflect over - this object doesn't have any properties, and at the same time all valid property names will work.
I'd say for IDynamicMetaObjectProvider implementations, you need to filter on known implementations where you can get a list of properties, such as ExpandoObject, and ignore (or throw an exception) for the rest.
ping the DNS first . If fails then configure your inbound/outbound rules in the launch wizard . configure ALL traffic and ALL protocol and just save with default options . Ping again with your local system and then should work
The best approach is Long.valueOf(str)
as it relies on Long.valueOf(long)
which uses an internal cache making it more efficient since it will reuse if needed the cached instances of Long
going from -128
to 127
included.
Returns a
Long
instance representing the specified long value. If a new Long instance is not required, this method should generally be used in preference to the constructorLong(long)
, as this method is likely to yield significantly better space and time performance by caching frequently requested values. Note that unlike the corresponding method in the Integer class, this method is not required to cache values within a particular range.
Thanks to auto-unboxing allowing to convert a wrapper class's instance into its corresponding primitive type, the code would then be:
long val = Long.valueOf(str);
Please note that the previous code can still throw a NumberFormatException
if the provided String
doesn't match with a signed long
.
Generally speaking, it is a good practice to use the static
factory method valueOf(str)
of a wrapper class like Integer
, Boolean
, Long
, ... since most of them reuse instances whenever it is possible making them potentially more efficient in term of memory footprint than the corresponding parse
methods or constructors.
Excerpt from Effective Java Item 1
written by Joshua Bloch:
You can often avoid creating unnecessary objects by using static factory methods (Item 1) in preference to constructors on immutable classes that provide both. For example, the static factory method
Boolean.valueOf(String)
is almost always preferable to the constructorBoolean(String)
. The constructor creates a new object each time it’s called, while the static factory method is never required to do so and won’t in practice.
static function definitions will mark this symbol as internal. So it will not be visible for linking from outside, but only to functions in the same compilation unit, usually the same file.
The following code the easiest way:
<h:outputLabel value="value = 10" rendered="#{row == 10}" />
<h:outputLabel value="value = 15" rendered="#{row == 15}" />
<h:outputLabel value="value xyz" rendered="#{row != 15 and row != 10}" />
Link for EL expression syntax. http://developers.sun.com/docs/jscreator/help/jsp-jsfel/jsf_expression_language_intro.html#syntax
dot -Tps input.dot > output.eps
dot -Tpng input.dot > output.png
PostScript output seems always there. I am not sure if dot has PNG output by default. This may depend on how you have built it.
For an easy copy-paste template I use this Perl snippet:
PATH=`echo $PATH | perl -pe s:/path/to/be/excluded::`
This way you don't need to escape the slashes for the substitute operator.
pFile = fopen("file", "r");
fseek (pFile, 0, SEEK_END);
size=ftell (pFile);
if (size) {
fseek(pFile, 0, SEEK_SET);
do something...
}
fclose(pFile)
Sorry for only commenting in the first place, but i'm posting almost every day a similar comment since many people think that it would be smart to encapsulate ADO.NET functionality into a DB-Class(me too 10 years ago). Mostly they decide to use static/shared objects since it seems to be faster than to create a new object for any action.
That is neither a good idea in terms of peformance nor in terms of fail-safety.
There's a good reason why ADO.NET internally manages the underlying Connections to the DBMS in the ADO-NET Connection-Pool:
In practice, most applications use only one or a few different configurations for connections. This means that during application execution, many identical connections will be repeatedly opened and closed. To minimize the cost of opening connections, ADO.NET uses an optimization technique called connection pooling.
Connection pooling reduces the number of times that new connections must be opened. The pooler maintains ownership of the physical connection. It manages connections by keeping alive a set of active connections for each given connection configuration. Whenever a user calls Open on a connection, the pooler looks for an available connection in the pool. If a pooled connection is available, it returns it to the caller instead of opening a new connection. When the application calls Close on the connection, the pooler returns it to the pooled set of active connections instead of closing it. Once the connection is returned to the pool, it is ready to be reused on the next Open call.
So obviously there's no reason to avoid creating,opening or closing connections since actually they aren't created,opened and closed at all. This is "only" a flag for the connection pool to know when a connection can be reused or not. But it's a very important flag, because if a connection is "in use"(the connection pool assumes), a new physical connection must be openend to the DBMS what is very expensive.
So you're gaining no performance improvement but the opposite. If the maximum pool size specified (100 is the default) is reached, you would even get exceptions(too many open connections ...). So this will not only impact the performance tremendously but also be a source for nasty errors and (without using Transactions) a data-dumping-area.
If you're even using static connections you're creating a lock for every thread trying to access this object. ASP.NET is a multithreading environment by nature. So theres a great chance for these locks which causes performance issues at best. Actually sooner or later you'll get many different exceptions(like your ExecuteReader requires an open and available Connection).
Conclusion:
using-statement
to dispose and close(in case of Connections) implicitelyThat's true not only for Connections(although most noticable). Every object implementing IDisposable
should be disposed(simplest by using-statement
), all the more in the System.Data.SqlClient
namespace.
All the above speaks against a custom DB-Class which encapsulates and reuse all objects. That's the reason why i commented to trash it. That's only a problem source.
Edit: Here's a possible implementation of your retrievePromotion
-method:
public Promotion retrievePromotion(int promotionID)
{
Promotion promo = null;
var connectionString = System.Configuration.ConfigurationManager.ConnectionStrings["MainConnStr"].ConnectionString;
using (SqlConnection connection = new SqlConnection(connectionString))
{
var queryString = "SELECT PromotionID, PromotionTitle, PromotionURL FROM Promotion WHERE PromotionID=@PromotionID";
using (var da = new SqlDataAdapter(queryString, connection))
{
// you could also use a SqlDataReader instead
// note that a DataTable does not need to be disposed since it does not implement IDisposable
var tblPromotion = new DataTable();
// avoid SQL-Injection
da.SelectCommand.Parameters.Add("@PromotionID", SqlDbType.Int);
da.SelectCommand.Parameters["@PromotionID"].Value = promotionID;
try
{
connection.Open(); // not necessarily needed in this case because DataAdapter.Fill does it otherwise
da.Fill(tblPromotion);
if (tblPromotion.Rows.Count != 0)
{
var promoRow = tblPromotion.Rows[0];
promo = new Promotion()
{
promotionID = promotionID,
promotionTitle = promoRow.Field<String>("PromotionTitle"),
promotionUrl = promoRow.Field<String>("PromotionURL")
};
}
}
catch (Exception ex)
{
// log this exception or throw it up the StackTrace
// we do not need a finally-block to close the connection since it will be closed implicitely in an using-statement
throw;
}
}
}
return promo;
}
It's not what the question asks but I used @Rich Drummond 's answer for a char array read in from stdin which is null terminated.
char *buff;
size_t buff_size = 100;
int choice;
do{
buff = (char *)malloc(buff_size *sizeof(char));
getline(&buff, &buff_size, stdin);
choice = atoi(buff);
free(buff);
}while((choice<1)&&(choice>9));
They are likely still referenced by the project file. Make sure they are deleted using the Solution Explorer in Visual Studio - it should show them as being missing (with an exclamation mark).
I was driving myself crazy with this exact problem. My JSON Marshaller and Unmarshaller were not populating my Go struct. Then I found the solution at https://eager.io/blog/go-and-json:
"As with all structs in Go, it’s important to remember that only fields with a capital first letter are visible to external programs like the JSON Marshaller."
After that, my Marshaller and Unmarshaller worked perfectly!
I see only one reason your code to not work, missed quote after file name string:
VBScript:
FSO.GetFile("MyFile.txt[missed_quote_here]).Name = "Hello.txt"
If you are looking inside dockerfile while creating image, add this line:
RUN apk add --update yourPackageName
You can use pushover if you don't want to create your own native app: https://pushover.net/
Thing is $@
will include the entire (relative) path to the source file which is in turn used to construct the object name (and thus its relative path)
We use:
#####################
# rules to build the object files
$(OBJDIR_1)/%.o: %.c
@$(ECHO) "$< -> $@"
@test -d $(OBJDIR_1) || mkdir -pm 775 $(OBJDIR_1)
@test -d $(@D) || mkdir -pm 775 $(@D)
@-$(RM) $@
$(CC) $(CFLAGS) $(CFLAGS_1) $(ALL_FLAGS) $(ALL_DEFINES) $(ALL_INCLUDEDIRS:%=-I%) -c $< -o $@
This creates an object directory with name specified in $(OBJDIR_1)
and subdirectories according to subdirectories in source.
For example (assume objs as toplevel object directory), in Makefile:
widget/apple.cpp
tests/blend.cpp
results in following object directory:
objs/widget/apple.o
objs/tests/blend.o
Update for Python3: (quoted from the already-answered answer, since the last edit/comment here suggested a deprecated method)
In Python 3,
reload
was moved to theimp
module. In 3.4,imp
was deprecated in favor ofimportlib
, andreload
was added to the latter. When targeting 3 or later, either reference the appropriate module when callingreload
or import it.
Takeaway:
importlib.reload(packagename)
imp.reload(packagename)
Use the reload
builtin function:
https://docs.python.org/2/library/functions.html#reload
When
reload(module)
is executed:
- Python modules’ code is recompiled and the module-level code reexecuted, defining a new set of objects which are bound to names in the module’s dictionary. The init function of extension modules is not called a second time.
- As with all other objects in Python the old objects are only reclaimed after their reference counts drop to zero.
- The names in the module namespace are updated to point to any new or changed objects.
- Other references to the old objects (such as names external to the module) are not rebound to refer to the new objects and must be updated in each namespace where they occur if that is desired.
Example:
# Make a simple function that prints "version 1"
shell1$ echo 'def x(): print "version 1"' > mymodule.py
# Run the module
shell2$ python
>>> import mymodule
>>> mymodule.x()
version 1
# Change mymodule to print "version 2" (without exiting the python REPL)
shell2$ echo 'def x(): print "version 2"' > mymodule.py
# Back in that same python session
>>> reload(mymodule)
<module 'mymodule' from 'mymodule.pyc'>
>>> mymodule.x()
version 2
import { CSSProperties } from 'react'_x000D_
import { BLACK, BLUE, GREY_DARK, WHITE } from '../colours'_x000D_
_x000D_
export const COLOR_ACCENT = BLUE_x000D_
export const COLOR_DEFAULT = BLACK_x000D_
export const FAMILY = "'Segoe UI', sans-serif"_x000D_
export const SIZE_LARGE = '26px'_x000D_
export const SIZE_MEDIUM = '20px'_x000D_
export const WEIGHT = 400_x000D_
_x000D_
type Font = {_x000D_
color: string,_x000D_
size: string,_x000D_
accent: Font,_x000D_
default: Font,_x000D_
light: Font,_x000D_
neutral: Font,_x000D_
xsmall: Font,_x000D_
small: Font,_x000D_
medium: Font,_x000D_
large: Font,_x000D_
xlarge: Font,_x000D_
xxlarge: Font_x000D_
} & (() => CSSProperties)_x000D_
_x000D_
function font (this: Font): CSSProperties {_x000D_
const css = {_x000D_
color: this.color,_x000D_
fontFamily: FAMILY,_x000D_
fontSize: this.size,_x000D_
fontWeight: WEIGHT_x000D_
}_x000D_
delete this.color_x000D_
delete this.size_x000D_
return css_x000D_
}_x000D_
_x000D_
const dp = (type: 'color' | 'size', name: string, value: string) => {_x000D_
Object.defineProperty(font, name, { get () {_x000D_
this[type] = value_x000D_
return this_x000D_
}})_x000D_
}_x000D_
_x000D_
dp('color', 'accent', COLOR_ACCENT)_x000D_
dp('color', 'default', COLOR_DEFAULT)_x000D_
dp('color', 'light', COLOR_LIGHT)_x000D_
dp('color', 'neutral', COLOR_NEUTRAL)_x000D_
dp('size', 'xsmall', SIZE_XSMALL)_x000D_
dp('size', 'small', SIZE_SMALL)_x000D_
dp('size', 'medium', SIZE_MEDIUM)_x000D_
_x000D_
export default font as Font
_x000D_
Use Addforce() method of a rigidbody compenent, make sure rigidbody is attached to the object and gravity is enabled, something like this
gameObj.rigidbody2D.AddForce(Vector3.up * 10 * Time.deltaTime); or
gameObj.rigidbody2D.AddForce(Vector3.up * 1000);
See which combination and what values matches your requirement and use accordingly. Hope it helps
If you're looking for arbitrary strings, and not just characters, you can use an overload of IndexOfAny which takes string arguments from the new project NLib:
if (s.IndexOfAny("aaa", "bbb", "ccc", StringComparison.Ordinal) >= 0)
function relativepath($to){
$a=explode("/",$_SERVER["PHP_SELF"] );
$index= array_search("$to",$a);
$str="";
for ($i = 0; $i < count($a)-$index-2; $i++) {
$str.= "../";
}
return $str;
}
Here is the best solution i made about that, you just need to specify at which level you want to stop, but the problem is that you have to use this folder name one time.
You must first include B.h
from A.h
. B b
; makes no sense until you have included B.h
.
Use System.currentTimeMillis() or System.nanoTime().
This is tested in android 7.0 up to android 10.0 and it works
Use this code to check if string contains special character and numbers:
name = firstname.getText().toString(); //name is the variable that holds the string value
Pattern special= Pattern.compile("[^a-z0-9 ]", Pattern.CASE_INSENSITIVE);
Pattern number = Pattern.compile("[0-9]", Pattern.CASE_INSENSITIVE);
Matcher matcher = special.matcher(name);
Matcher matcherNumber = number.matcher(name);
boolean constainsSymbols = matcher.find();
boolean containsNumber = matcherNumber.find();
if(constainsSymbols == true){
//string contains special symbol/character
}
else if(containsNumber == true){
//string contains numbers
}
else{
//string doesn't contain special characters or numbers
}
Fraction and grouping characters for representing real numbers may differ between languages. The same real number could be written in very different ways depending on the language.
The number two million in German
2,000,000.00
and in English
2.000.000,00
A method to fully extract real numbers from a given string in a language agnostic way:
public List<BigDecimal> extractDecimals(final String s, final char fraction, final char grouping) {
List<BigDecimal> decimals = new ArrayList<BigDecimal>();
//Remove grouping character for easier regexp extraction
StringBuilder noGrouping = new StringBuilder();
int i = 0;
while(i >= 0 && i < s.length()) {
char c = s.charAt(i);
if(c == grouping) {
int prev = i-1, next = i+1;
boolean isValidGroupingChar =
prev >= 0 && Character.isDigit(s.charAt(prev)) &&
next < s.length() && Character.isDigit(s.charAt(next));
if(!isValidGroupingChar)
noGrouping.append(c);
i++;
} else {
noGrouping.append(c);
i++;
}
}
//the '.' character has to be escaped in regular expressions
String fractionRegex = fraction == POINT ? "\\." : String.valueOf(fraction);
Pattern p = Pattern.compile("-?(\\d+" + fractionRegex + "\\d+|\\d+)");
Matcher m = p.matcher(noGrouping);
while (m.find()) {
String match = m.group().replace(COMMA, POINT);
decimals.add(new BigDecimal(match));
}
return decimals;
}
If you want to get any parent by any child control you can use this code, and when you find the UserControl/Form/Panel or others you can call funnctions or set/get values:
Control myControl= this;
while (myControl.Parent != null)
{
if (myControl.Parent!=null)
{
myControl = myControl.Parent;
if (myControl.Name== "MyCustomUserControl")
{
((MyCustomUserControl)myControl).lblTitle.Text = "FOUND IT";
}
}
}
follow these steps. 1:- create your configuration class like below you can see
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.beans.factory.annotation.Value;
@Configuration
public class YourConfiguration{
// passing the key which you set in application.properties
@Value("${some.pro}")
private String somePro;
// getting the value from that key which you set in application.properties
@Bean
public String getsomePro() {
return somePro;
}
}
2:- when you have a configuration class then inject in the variable from a configuration where you need.
@Component
public class YourService {
@Autowired
private String getsomePro;
// now you have a value in getsomePro variable automatically.
}
2015-03-30: Edited - Missing information has been added
To retrieve the current directory you can use the dynamic %cd%
variable that holds the current active directory
set "curpath=%cd%"
This generates a value with a ending backslash for the root directory, and without a backslash for the rest of directories. You can force and ending backslash for any directory with
for %%a in ("%cd%\") do set "curpath=%%~fa"
Or you can use another dynamic variable: %__CD__%
that will return the current active directory with an ending backslash.
Also, remember the %cd%
variable can have a value directly assigned. In this case, the value returned will not be the current directory, but the assigned value. You can prevent this with a reference to the current directory
for %%a in (".\") do set "curpath=%%~fa"
Up to windows XP, the %__CD__%
variable has the same behaviour. It can be overwritten by the user, but at least from windows 7 (i can't test it on Vista), any change to the %__CD__%
is allowed but when the variable is read, the changed value is ignored and the correct current active directory is retrieved (note: the changed value is still visible using the set
command).
BUT all the previous codes will return the current active directory, not the directory where the batch file is stored.
set "curpath=%~dp0"
It will return the directory where the batch file is stored, with an ending backslash.
BUT this will fail if in the batch file the shift
command has been used
shift
echo %~dp0
As the arguments to the batch file has been shifted, the %0
reference to the current batch file is lost.
To prevent this, you can retrieve the reference to the batch file before any shifting, or change the syntax to shift /1
to ensure the shift operation will start at the first argument, not affecting the reference to the batch file. If you can not use any of this options, you can retrieve the reference to the current batch file in a call to a subroutine
@echo off
setlocal enableextensions
rem Destroy batch file reference
shift
echo batch folder is "%~dp0"
rem Call the subroutine to get the batch folder
call :getBatchFolder batchFolder
echo batch folder is "%batchFolder%"
exit /b
:getBatchFolder returnVar
set "%~1=%~dp0" & exit /b
This approach can also be necessary if when invoked the batch file name is quoted and a full reference is not used (read here).
Sometimes, you just want to have a look at previous copies of files without the rigmarole of going through the diffs.
In such a case, it's just as easy to make a clone of a repository and checkout the specific commit that you are interested in and have a look at the subdirectory in that cloned repository. Because everything is local you can just delete this clone when you are done.
I had to add a Refresh() statement after the Image = null to make things work.
Rotate Image by 90 degree (clockwise/anti-clockwise direction)
Function call -
UIImage *rotatedImage = [self rotateImage:originalImage clockwise:YES];
Implementation:
- (UIImage*)rotateImage:(UIImage*)sourceImage clockwise:(BOOL)clockwise
{
CGSize size = sourceImage.size;
UIGraphicsBeginImageContext(CGSizeMake(size.height, size.width));
[[UIImage imageWithCGImage:[sourceImage CGImage]
scale:1.0
orientation:clockwise ? UIImageOrientationRight : UIImageOrientationLeft]
drawInRect:CGRectMake(0,0,size.height ,size.width)];
UIImage* newImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return newImage;
}
Select first the text you want to format and then press Ctrl+I.
Use Cmd+A first if you wish to format all text in the selected file.
Note: this procedure only re-indents the lines, it does not do any advanced formatting.
The new key binding to re-indent is control+I.
Updated for Apache 2.4, for non-systemd (e.g., CentOS 6.x, Amazon Linux AMI) and for systemd (e.g., CentOS 7.x):
There are two ways of having the apache process reload the configuration, depending on what you want done with its current threads, either advise to exit when idle, or killing them directly.
Note that Apache recommends using apachectl -k
as the command, and for systemd, the command is replaced by httpd -k
apachectl -k graceful
or httpd -k graceful
Apache will advise its threads to exit when idle, and then apache reloads the configuration (it doesn't exit itself), this means statistics are not reset.
apachectl -k restart
or httpd -k restart
This is similar to stop, in that the process kills off its threads, but then the process reloads the configuration file, rather than killing itself.
There are several options to create a client-side messagebox in ASP.NET - see here, here and here for example...
Use the CellMouseDown
event on the DataGridView
. From the event handler arguments you can determine which cell was clicked. Using the PointToClient()
method on the DataGridView you can determine the relative position of the pointer to the DataGridView, so you can pop up the menu in the correct location.
(The DataGridViewCellMouseEvent
parameter just gives you the X
and Y
relative to the cell you clicked, which isn't as easy to use to pop up the context menu.)
This is the code I used to get the mouse position, then adjust for the position of the DataGridView:
var relativeMousePosition = DataGridView1.PointToClient(Cursor.Position);
this.ContextMenuStrip1.Show(DataGridView1, relativeMousePosition);
The entire event handler looks like this:
private void DataGridView1_CellMouseDown(object sender, DataGridViewCellMouseEventArgs e)
{
// Ignore if a column or row header is clicked
if (e.RowIndex != -1 && e.ColumnIndex != -1)
{
if (e.Button == MouseButtons.Right)
{
DataGridViewCell clickedCell = (sender as DataGridView).Rows[e.RowIndex].Cells[e.ColumnIndex];
// Here you can do whatever you want with the cell
this.DataGridView1.CurrentCell = clickedCell; // Select the clicked cell, for instance
// Get mouse position relative to the vehicles grid
var relativeMousePosition = DataGridView1.PointToClient(Cursor.Position);
// Show the context menu
this.ContextMenuStrip1.Show(DataGridView1, relativeMousePosition);
}
}
}
http://en.wikipedia.org/wiki/Collation
Collation is the assembly of written information into a standard order. (...) A collation algorithm such as the Unicode collation algorithm defines an order through the process of comparing two given character strings and deciding which should come before the other.
Could do it with :contains()
selector as well:
$('#toptitle:contains("Profil")').text("New word");
example: http://jsfiddle.net/niklasvh/xPRzr/
You can get a really nice, visual output of how your branches differ with this
git log --graph --pretty=format:'%Cred%h%Creset -%C(yellow)%d%Creset %s %Cgreen(%cr)%Creset' --abbrev-commit --date=relative master..branch-X
This works:
var num = parseFloat(document.getElementById(amtid4).innerHTML, 10).toFixed(2);
Great answers here. If you're looking for the default view "Store Name" set in the Magento configuration:
Mage::app()->getStore()->getFrontendName()
You can try it. hope it will be useful.
SELECT * FROM `table` WHERE `Value` COLLATE latin1_general_cs = "IAreSavage"
As of version 0.5, the GitHub plugin for Jenkins can trigger a build when a change is pushed to GitHub.
normaly is better image store in public folder (because it has write permission already that you can use when I upload images to it)
public
upload_media
photos
image.png
$image = public_path() . '/upload_media/photos/image.png'; // destination path
view PHP
<img src="<?= $image ?>">
View blade
<img src="{{ $image }}">
@Iggy answer sets JSON serialization of c# enum as string only for ASP.NET (Web API and so).
But to make it work also with ad hoc serialization, add following to your start class (like Global.asax Application_Start)
//convert Enums to Strings (instead of Integer) globally
JsonConvert.DefaultSettings = (() =>
{
var settings = new JsonSerializerSettings();
settings.Converters.Add(new StringEnumConverter { CamelCaseText = true });
return settings;
});
More information on the Json.NET page
Additionally, to have your enum member to serialize/deserialize to/from specific text, use the
System.Runtime.Serialization.EnumMember
attribute, like this:
public enum time_zone_enum
{
[EnumMember(Value = "Europe/London")]
EuropeLondon,
[EnumMember(Value = "US/Alaska")]
USAlaska
}
The following will return true if the JTextField "name" does not contain text:
name.getText().isEmpty
Here is the working solution for ie, firefox and chrome:
var myEvent = window.attachEvent || window.addEventListener;
var chkevent = window.attachEvent ? 'onbeforeunload' : 'beforeunload'; /// make IE7, IE8 compitable
myEvent(chkevent, function(e) { // For >=IE7, Chrome, Firefox
var confirmationMessage = 'Are you sure to leave the page?'; // a space
(e || window.event).returnValue = confirmationMessage;
return confirmationMessage;
});
Use -B, -A or -C option
grep --help
...
-B, --before-context=NUM print NUM lines of leading context
-A, --after-context=NUM print NUM lines of trailing context
-C, --context=NUM print NUM lines of output context
-NUM same as --context=NUM
...
I've concluded this is some kind of Visual Studio bug. Perhaps C Johnson is right - perhaps the build process keeps the file locked.
I do have a workaround which works - each time this happens - I change the Target Name of the executable under the Project's properties (right click the project, then Properties\Configuration Properties\General\Target Name).
In this fashion VS creates a new executable and the problem is worked around. Every few times I do this I return to the original name, thus cycling through ~3 names.
If someone will find the reason for this and a solution, please do answer and I may move the answer to yours, as mine is a workaround.
Change your code like this. You forget about the value inside option. Before you assign the ng-model. It must have a value. Only then it doesn't get the undefined value.
<div ng-app="MyApp1">
<div ng-controller="MyController">
<input type="text" ng-model="feed.name" placeholder="Name" />
<select ng-model="feed">
<option ng-repeat="template in configs" value="template.value">{{template.name}}
</option>
</select>
</div>
</div>
JS
var MyApp=angular.module('MyApp1',[])
MyApp.controller('MyController',function($scope) {
$scope.feed = 'config1';
$scope.configs = [
{'name': 'Config 1', 'value': 'config1'},
{'name': 'Config 2', 'value': 'config2'},
{'name': 'Config 3', 'value': 'config3'}
];
});
You can add or increase the day of week for the following example and hope this will helpful for you.Lets see....
//Current date
var currentDate = new Date();
//to set Bangladeshi date need to add hour 6
currentDate.setUTCHours(6);
//here 2 is day increament for the date and you can use -2 for decreament day
currentDate.setDate(currentDate.getDate() +parseInt(2));
//formatting date by mm/dd/yyyy
var dateInmmddyyyy = currentDate.getMonth() + 1 + '/' + currentDate.getDate() + '/' + currentDate.getFullYear();
The +
sign means select an "adjacent sibling"
For example, this style will apply from the second <p>
:
p + p {
font-weight: bold;
}
_x000D_
<div>
<p>Paragraph 1</p>
<p>Paragraph 2</p>
</div>
_x000D_
See this JSFiddle and you will understand it: http://jsfiddle.net/7c05m7tv/ (Another JSFiddle: http://jsfiddle.net/7c05m7tv/70/)
Adjacent sibling selectors are supported in all modern browsers.
For me, execute only
sudo chown -R $(whoami) ~/.npm
doesn't work. Then, I execute too
sudo chown -R $(whoami) /usr/lib/node_modules/
sudo chown -R $(whoami) /usr/bin/node
sudo chown -R $(whoami) /usr/bin/npm
And all works fine!