Nested classes are just like regular classes, but:
Some examples:
Assume you want to have a class SomeSpecificCollection
which would aggregate objects of class Element
. You can then either:
declare two classes: SomeSpecificCollection
and Element
- bad, because the name "Element" is general enough in order to cause a possible name clash
introduce a namespace someSpecificCollection
and declare classes someSpecificCollection::Collection
and someSpecificCollection::Element
. No risk of name clash, but can it get any more verbose?
declare two global classes SomeSpecificCollection
and SomeSpecificCollectionElement
- which has minor drawbacks, but is probably OK.
declare global class SomeSpecificCollection
and class Element
as its nested class. Then:
SomeSpecificCollection
you refer to just Element
, and everywhere else as SomeSpecificCollection::Element
- which looks +- the same as 3., but more clearSomeSpecificCollection
is also a class.In my opinion, the last variant is definitely the most intuitive and hence best design.
Let me stress - It's not a big difference from making two global classes with more verbose names. It just a tiny little detail, but imho it makes the code more clear.
This is especially useful for introducing typedefs or enums. I'll just post a code example here:
class Product {
public:
enum ProductType {
FANCY, AWESOME, USEFUL
};
enum ProductBoxType {
BOX, BAG, CRATE
};
Product(ProductType t, ProductBoxType b, String name);
// the rest of the class: fields, methods
};
One then will call:
Product p(Product::FANCY, Product::BOX);
But when looking at code completion proposals for Product::
, one will often get all the possible enum values (BOX, FANCY, CRATE) listed and it's easy to make a mistake here (C++0x's strongly typed enums kind of solve that, but never mind).
But if you introduce additional scope for those enums using nested classes, things could look like:
class Product {
public:
struct ProductType {
enum Enum { FANCY, AWESOME, USEFUL };
};
struct ProductBoxType {
enum Enum { BOX, BAG, CRATE };
};
Product(ProductType::Enum t, ProductBoxType::Enum b, String name);
// the rest of the class: fields, methods
};
Then the call looks like:
Product p(Product::ProductType::FANCY, Product::ProductBoxType::BOX);
Then by typing Product::ProductType::
in an IDE, one will get only the enums from the desired scope suggested. This also reduces the risk of making a mistake.
Of course this may not be needed for small classes, but if one has a lot of enums, then it makes things easier for the client programmers.
In the same way, you could "organise" a big bunch of typedefs in a template, if you ever had the need to. It's a useful pattern sometimes.
The PIMPL (short for Pointer to IMPLementation) is an idiom useful to remove the implementation details of a class from the header. This reduces the need of recompiling classes depending on the class' header whenever the "implementation" part of the header changes.
It's usually implemented using a nested class:
X.h:
class X {
public:
X();
virtual ~X();
void publicInterface();
void publicInterface2();
private:
struct Impl;
std::unique_ptr<Impl> impl;
}
X.cpp:
#include "X.h"
#include <windows.h>
struct X::Impl {
HWND hWnd; // this field is a part of the class, but no need to include windows.h in header
// all private fields, methods go here
void privateMethod(HWND wnd);
void privateMethod();
};
X::X() : impl(new Impl()) {
// ...
}
// and the rest of definitions go here
This is particularly useful if the full class definition needs the definition of types from some external library which has a heavy or just ugly header file (take WinAPI). If you use PIMPL, then you can enclose any WinAPI-specific functionality only in .cpp
and never include it in .h
.
This is how to get the html DOM element purely with JS:
var htmlElement = document.getElementsByTagName("html")[0];
or
var htmlElement = document.querySelector("html");
And if you want to use jQuery to get attributes from it...
$(htmlElement).attr(INSERT-ATTRIBUTE-NAME);
I have added a distribution to the Python Package Index which makes the match_hostname()
function from the Python 3.2 ssl
package available on previous versions of Python.
http://pypi.python.org/pypi/backports.ssl_match_hostname/
You can install it with:
pip install backports.ssl_match_hostname
Or you can make it a dependency listed in your project's setup.py
. Either way, it can be used like this:
from backports.ssl_match_hostname import match_hostname, CertificateError
...
sslsock = ssl.wrap_socket(sock, ssl_version=ssl.PROTOCOL_SSLv3,
cert_reqs=ssl.CERT_REQUIRED, ca_certs=...)
try:
match_hostname(sslsock.getpeercert(), hostname)
except CertificateError, ce:
...
This is my "one-line" solution:
$.postJSON = function(url, data, func) { $.post(url+(url.indexOf("?") == -1 ? "?" : "&")+"callback=?", data, func, "json"); }
In order to use jsonp, and POST method, this function adds the "callback" GET parameter to the URL. This is the way to use it:
$.postJSON("http://example.com/json.php",{ id : 287 }, function (data) {
console.log(data.name);
});
The server must be prepared to handle the callback GET parameter and return the json string as:
jsonp000000 ({"name":"John", "age": 25});
in which "jsonp000000" is the callback GET value.
In PHP the implementation would be like:
print_r($_GET['callback']."(".json_encode($myarr).");");
I made some cross-domain tests and it seems to work. Still need more testing though.
mysql -u username -p -h localhost DATA-BASE-NAME < data.sql
look here - step 3: this way you dont need the USE statement
In pure Ruby you could extend the string class using code lifted from Rails .camelize
class String
def camelize(uppercase_first_letter = true)
string = self
if uppercase_first_letter
string = string.sub(/^[a-z\d]*/) { |match| match.capitalize }
else
string = string.sub(/^(?:(?=\b|[A-Z_])|\w)/) { |match| match.downcase }
end
string.gsub(/(?:_|(\/))([a-z\d]*)/) { "#{$1}#{$2.capitalize}" }.gsub("/", "::")
end
end
With awk:
curl -sS http://the_repo/com/stackoverflow/the_artifact/maven-metadata.xml | grep latest | awk -F'<latest>' '{print $2}' | awk -F'</latest>' '{print $1}'
With sed:
curl -sS http://the_repo/com/stackoverflow/the_artifact/maven-metadata.xml | grep latest | sed 's:<latest>::' | sed 's:</latest>::'
You can alternatively download winutils.exe
from GITHub:
https://github.com/steveloughran/winutils/tree/master/hadoop-2.7.1/bin
replace hadoop-2.7.1
with the version you want and place the file in D:\hadoop\bin
If you do not have access rights to the environment variable settings on your machine, simply add the below line to your code:
System.setProperty("hadoop.home.dir", "D:\\hadoop");
"There are no safe means of assigning multiple recipients to a single mailto: link via HTML. There are safe, non-HTML, ways of assigning multiple recipients from a mailto: link."
http://www.sightspecific.com/~mosh/www_faq/multrec.html
For a quick fix to your problem, change your ;
to a comma ,
and eliminate the spaces between email addresses
<a href='mailto:[email protected],[email protected]'>Email Us</a>
I had this similar error when using wget ...
, and after much unfruitful searching in the Internet, I discovered that it was happening when hostnames were being resolved to IPv6 addresses. I discovered this by comparing the outputs of wget ...
in two machines, one was resolving to IPv4 and it worked there, the other was resolving to IPv6 and it failed there.
So the solution in my case was to run networksetup -setv6off Wi-Fi
on macOS High Sierra 10.13.6. (I discovered this command in this page).
Hope this helps you.
When you declare a variable as here
int a[10][10];
you are telling the C++ compiler that you want 100 consecutive integers allocated in the program's memory at runtime. The compiler will then provide for your program to have that much memory available and all is well with the world.
If however you tell the compiler
int x = 9001;
int y = 5;
int a[x][y];
the compiler has no way of knowing how much memory you are actually going to need at run time without doing a lot of very complex analysis to track down every last place where the values of x and y changed [if any]. Rather than support such variable size arrays, C++ and C strongly suggest if not outright demand that you use malloc() to manually allocate the space you want.
TL;DR
int x = 5;
int y = 5;
int **a = malloc(x*sizeof(int*));
for(int i = 0; i < y; i++) {
a[i] = malloc(sizeof(int*)*y);
}
a is now a 2D array of size 5x5 and will behave the same as int a[5][5]. Because you have manually allocated memory, C++ and C demand that you delete it by hand too...
for(int i = 0; i < x; i++) {
free(a[i]); // delete the 2nd dimension array
}
free(a); // delete a itself
It isn't necessary. It's a quirk of the language.
#add code here to figure out the number of 0's you need, naming the variable n.
listofzeros = [0] * n
if you prefer to put it in the function, just drop in that code and add return listofzeros
Which would look like this:
def zerolistmaker(n):
listofzeros = [0] * n
return listofzeros
sample output:
>>> zerolistmaker(4)
[0, 0, 0, 0]
>>> zerolistmaker(5)
[0, 0, 0, 0, 0]
>>> zerolistmaker(15)
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
>>>
Use this code to not only check if the memcache extension is enabled, but also whether the daemon is running and able to store and retrieve data successfully:
<?php
if (class_exists('Memcache')) {
$server = 'localhost';
if (!empty($_REQUEST['server'])) {
$server = $_REQUEST['server'];
}
$memcache = new Memcache;
$isMemcacheAvailable = @$memcache->connect($server);
if ($isMemcacheAvailable) {
$aData = $memcache->get('data');
echo '<pre>';
if ($aData) {
echo '<h2>Data from Cache:</h2>';
print_r($aData);
} else {
$aData = array(
'me' => 'you',
'us' => 'them',
);
echo '<h2>Fresh Data:</h2>';
print_r($aData);
$memcache->set('data', $aData, 0, 300);
}
$aData = $memcache->get('data');
if ($aData) {
echo '<h3>Memcache seem to be working fine!</h3>';
} else {
echo '<h3>Memcache DOES NOT seem to be working!</h3>';
}
echo '</pre>';
}
}
if (!$isMemcacheAvailable) {
echo 'Memcache not available';
}
?>
Take a look at http://www.w3schools.com/jsref/jsref_obj_date.asp
There is a function UTC()
that returns the milliseconds from the unix epoch.
I was facing this issue because of Firebase Crashlytics. In Targets -> Build Phases -> Run Script
I had Firebase Crashlytics written like
${PODS_ROOT}/FirebaseCrashlytics/run
I changed that and put it in double quotes
"${PODS_ROOT}/FirebaseCrashlytics/run"
I converted into millisecond and deducted days else month and year won't change and logical
var numberOfDays = 10;//number of days need to deducted or added
var date = "01-01-2018"// date need to change
var dt = new Date(parseInt(date.substring(6), 10), // Year
parseInt(date.substring(3,5), 10) - 1, // Month (0-11)
parseInt(date.substring(0,2), 10));
var new_dt = dt.setMilliseconds(dt.getMilliseconds() - numberOfDays*24*60*60*1000);
new_dt = new Date(new_dt);
var changed_date = new_dt.getDate()+"-"+(new_dt.getMonth()+1)+"-"+new_dt.getFullYear();
Hope helps
I also had this problem on a Server 2012 R2 VM joined to my local AD domain. I eventually solved the problem by taking the VM off the domain and re-joining it.
I could remove the error (Run-time error '1004'. Application-defined or operation-defined error) by defining the counters as Single
f
doesn't actually alter the value of x
(which is always the same reference to an instance of a list). Rather, it alters the contents of this list.
In both cases, a copy of a reference is passed to the function. Inside the function,
n
gets assigned a new value. Only the reference inside the function is modified, not the one outside it.x
does not get assigned a new value: neither the reference inside nor outside the function are modified. Instead, x
’s value is modified.Since both the x
inside the function and outside it refer to the same value, both see the modification. By contrast, the n
inside the function and outside it refer to different values after n
was reassigned inside the function.
echo "foo<br />bar";
I believe this snippet will also be helpful in a situation where the dates comparison spans more than two entries.
static final int COMPARE_EARLIEST = 0;
static final int COMPARE_MOST_RECENT = 1;
public LocalDate getTargetDate(List<LocalDate> datesList, int comparatorType) {
LocalDate refDate = null;
switch(comparatorType)
{
case COMPARE_EARLIEST:
//returns the most earliest of the date entries
refDate = (LocalDate) datesList.stream().min(Comparator.comparing(item ->
item.toDateTimeAtCurrentTime())).get();
break;
case COMPARE_MOST_RECENT:
//returns the most recent of the date entries
refDate = (LocalDate) datesList.stream().max(Comparator.comparing(item ->
item.toDateTimeAtCurrentTime())).get();
break;
}
return refDate;
}
I know this post is old. But after gathering all code from above I made a nice method (solution) to handle ajax running and regular pages. The code is made for C# only (since Selenium is definitely a best fit for C# Visual Studio after a year of messing around).
The method is used as an extension method, which means to put it simple; that you can add more functionality (methods) in this case, to the object IWebDriver. Important is that you have to define: 'this' in the parameters to make use of it.
The timeout variable is the amount of seconds for the webdriver to wait, if the page is not responding. Using 'Selenium' and 'Selenium.Support.UI' namespaces it is possible to execute a piece of javascript that returns a boolean, whether the document is ready (complete) and if jQuery is loaded. If the page does not have jQuery then the method will throw an exception. This exception is 'catched' by error handling. In the catch state the document will only be checked for it's ready state, without checking for jQuery.
public static void WaitUntilDocumentIsReady(this IWebDriver driver, int timeoutInSeconds) {
var javaScriptExecutor = driver as IJavaScriptExecutor;
var wait = new WebDriverWait(driver, TimeSpan.FromSeconds(timeoutInSeconds));
try {
Func<IWebDriver, bool> readyCondition = webDriver => (bool)javaScriptExecutor.ExecuteScript("return (document.readyState == 'complete' && jQuery.active == 0)");
wait.Until(readyCondition);
} catch(InvalidOperationException) {
wait.Until(wd => javaScriptExecutor.ExecuteScript("return document.readyState").ToString() == "complete");
}
}
if ! test -f $PIDFILE || ! psgrep `cat $PIDFILE`; then
restart_process
# Write PIDFILE
echo $! >$PIDFILE
fi
This is not possible with the magic methods, however you can achieve this using DQL (Doctrine Query Language). In your example, assuming you have entity named Orders with Product property, just go ahead and do the following:
$dql_query = $em->createQuery("
SELECT o FROM AcmeCodeBundle:Orders o
WHERE
o.OrderEmail = '[email protected]' AND
o.Product LIKE 'My Products%'
");
$orders = $dql_query->getResult();
Should do exactly what you need.
First change the array to a string by using implode() function. E.g $number=array(1,2,3,4,5,...);
$stringofnumber=implode("|",$number);
then pass the string to a session. e.g $_SESSION['string']=$stringofnumber;
so when you go to the page where you want to use the array, just explode your string. e.g
$number=explode("|", $_SESSION['string']);
finally number is your array but remember to start array on the of each page.
This can replace the MaxLength and the MinLength
[StringLength(40, MinimumLength = 10 , ErrorMessage = "Password cannot be longer than 40 characters and less than 10 characters")]
No problem if all the arrays you are about to use in this scenario are small like in your example.
If you will use this for large blobs (e.g. storing large binary files many Mbs or even Gbs in size into a VARBINARY
) then you'd probably be much better off using specific support in SQL Server for reading/writing subsections of such large blobs. Things like READTEXT
and UPDATETEXT
, or in current versions of SQL Server SUBSTRING
.
For more information and examples see either my 2006 article in .NET Magazine ("BLOB + Stream = BlobStream", in Dutch, with complete source code), or an English translation and generalization of this on CodeProject by Peter de Jonghe. Both of these are linked from my weblog.
Then, we have a first big problem. This is a program:
f(x) = 2 * x
g(x,y) = x / y
How can we say what is to be executed first? How can we form an ordered sequence of functions (i.e. a program) using no more than functions?
Solution: compose functions. If you want first g
and then f
, just write f(g(x,y))
. OK, but ...
More problems: some functions might fail (i.e. g(2,0)
, divide by 0). We have no "exceptions" in FP. How do we solve it?
Solution: Let's allow functions to return two kind of things: instead of having g : Real,Real -> Real
(function from two reals into a real), let's allow g : Real,Real -> Real | Nothing
(function from two reals into (real or nothing)).
But functions should (to be simpler) return only one thing.
Solution: let's create a new type of data to be returned, a "boxing type" that encloses maybe a real or be simply nothing. Hence, we can have g : Real,Real -> Maybe Real
. OK, but ...
What happens now to f(g(x,y))
? f
is not ready to consume a Maybe Real
. And, we don't want to change every function we could connect with g
to consume a Maybe Real
.
Solution: let's have a special function to "connect"/"compose"/"link" functions. That way, we can, behind the scenes, adapt the output of one function to feed the following one.
In our case: g >>= f
(connect/compose g
to f
). We want >>=
to get g
's output, inspect it and, in case it is Nothing
just don't call f
and return Nothing
; or on the contrary, extract the boxed Real
and feed f
with it. (This algorithm is just the implementation of >>=
for the Maybe
type).
Many other problems arise which can be solved using this same pattern: 1. Use a "box" to codify/store different meanings/values, and have functions like g
that return those "boxed values". 2. Have composers/linkers g >>= f
to help connecting g
's output to f
's input, so we don't have to change f
at all.
Remarkable problems that can be solved using this technique are:
having a global state that every function in the sequence of functions ("the program") can share: solution StateMonad
.
We don't like "impure functions": functions that yield different output for same input. Therefore, let's mark those functions, making them to return a tagged/boxed value: IO
monad.
Total happiness !!!!
Your test cases where you cannot connect with "ServerName\Instance" but ARE able to connect to the server via "ServerName,Port" is what happens when you VPN into a network with Microsoft VPN. (I had this issue). For my VPN Issue I simply use the static port numbers to get around it.
This is appearently due to VPN not forwarding UDP Packets, allowing only TCP Connections.
In your case your firewall or security settings or antivirus or whatever may be blocking UDP.
I would suggest you check your firewall setting to specifically allow for UDP.
On startup, SQL Server Browser starts and claims UDP port 1434. SQL Server Browser reads the registry, identifies all SQL Server instances on the computer, and notes the ports and named pipes that they use. When a server has two or more network cards, SQL Server Browser will return all ports enabled for SQL Server. SQL Server 2005 and SQL Server Browser support ipv6 and ipv4.
When SQL Server 2000 and SQL Server 2005 clients request SQL Server resources, the client network library sends a UDP message to the server using port 1434. SQL Server Browser responds with the TCP/IP port or named pipe of the requested instance. The network library on the client application then completes the connection by sending a request to the server using the port or named pipe of the desired instance.
Using a Firewall
To communicate with the SQL Server Browser service on a server behind a firewall, open UDP port 1434 in addition to the TCP port used by SQL Server (for example, 1433).
ls -ltrh /proc | grep YOUR-PID-HERE
For example, my Google Chrome's PID is 11583:
ls -l /proc | grep 11583
dr-xr-xr-x 7 adam adam 0 2011-04-20 16:34 11583
write this:
#siteInfo{text-align:center}
p, input{display:inline-block}
As of 16/9/2020 most of these answers are not too much consistent any way! Try this new npm package
Sequelize-mig
It completed most known problems in sequelize-auto-migrations and its forks and its maintained and documented!
Its used in a way similar to the known one
Install:
npm install sequelize-mig -g / yarn global add sequelize-mig
then use it like this
sequelize-mig migration:make -n <migration name>
When we work on development environment and merge our code to staging/production branch then Git no fast forward can be a better option. Usually when we work in development branch for a single feature we tend to have multiple commits. Tracking changes with multiple commits can be inconvenient later on. If we merge with staging/production branch using Git no fast forward then it will have only 1 commit. Now anytime we want to revert the feature, just revert that commit. Life is easy.
StreamWriter is available for NET 1.1. and for the Compact framework. Just open the file and apply the ToString to your StringBuilder:
StringBuilder sb = new StringBuilder();
sb.Append(......);
StreamWriter sw = new StreamWriter("\\hereIAm.txt", true);
sw.Write(sb.ToString());
sw.Close();
Also, note that you say that you want to append debug messages to the file (like a log). In this case, the correct constructor for StreamWriter is the one that accepts an append
boolean flag. If true then it tries to append to an existing file or create a new one if it doesn't exists.
Have a look at this solution I came up with
Positioned( child: SizedBox( child: CircularProgressIndicator(), width: 50, height: 50,), left: MediaQuery.of(context).size.width / 2 - 25);
The negative margin trick on the box container works just great. Here is another example working great with order, wrapping and what not.
.container {_x000D_
border: 1px solid green;_x000D_
width: 200px;_x000D_
display: inline-block;_x000D_
}_x000D_
_x000D_
#box {_x000D_
display: flex;_x000D_
flex-wrap: wrap-reverse;_x000D_
margin: -10px;_x000D_
border: 1px solid red;_x000D_
}_x000D_
.item {_x000D_
flex: 1 1 auto;_x000D_
order: 1;_x000D_
background: gray;_x000D_
width: 50px;_x000D_
height: 50px;_x000D_
margin: 10px;_x000D_
border: 1px solid blue;_x000D_
}_x000D_
.first {_x000D_
order: 0;_x000D_
}
_x000D_
<div class=container>_x000D_
<div id='box'>_x000D_
<div class='item'>1</div>_x000D_
<div class='item'>2</div>_x000D_
<div class='item first'>3*</div>_x000D_
<div class='item'>4</div>_x000D_
<div class='item'>5</div>_x000D_
</div>_x000D_
</div>
_x000D_
rails destroy controller lalala
rails destroy model yadayada
rails destroy scaffold hohoho
Rails 3.2 adds a new d
shortcut to the command, so now you can write:
rails d controller lalala
rails d model yadayada
rails d scaffold hohoho
The current source is on GitHub and Bower.
$ bower install jquery-serialize-object
The following code can take work with all sorts of input names; and handle them just as you'd expect.
For example:
<!-- All of these will work! -->
<input name="honey[badger]" value="a">
<input name="wombat[]" value="b">
<input name="hello[panda][]" value="c">
<input name="animals[0][name]" value="d">
<input name="animals[0][breed]" value="e">
<input name="crazy[1][][wonky]" value="f">
<input name="dream[as][vividly][as][you][can]" value="g">
// Output
{
"honey":{
"badger":"a"
},
"wombat":["b"],
"hello":{
"panda":["c"]
},
"animals":[
{
"name":"d",
"breed":"e"
}
],
"crazy":[
null,
[
{"wonky":"f"}
]
],
"dream":{
"as":{
"vividly":{
"as":{
"you":{
"can":"g"
}
}
}
}
}
}
$('#my-form').serializeObject();
(function($){
$.fn.serializeObject = function(){
var self = this,
json = {},
push_counters = {},
patterns = {
"validate": /^[a-zA-Z][a-zA-Z0-9_]*(?:\[(?:\d*|[a-zA-Z0-9_]+)\])*$/,
"key": /[a-zA-Z0-9_]+|(?=\[\])/g,
"push": /^$/,
"fixed": /^\d+$/,
"named": /^[a-zA-Z0-9_]+$/
};
this.build = function(base, key, value){
base[key] = value;
return base;
};
this.push_counter = function(key){
if(push_counters[key] === undefined){
push_counters[key] = 0;
}
return push_counters[key]++;
};
$.each($(this).serializeArray(), function(){
// Skip invalid keys
if(!patterns.validate.test(this.name)){
return;
}
var k,
keys = this.name.match(patterns.key),
merge = this.value,
reverse_key = this.name;
while((k = keys.pop()) !== undefined){
// Adjust reverse_key
reverse_key = reverse_key.replace(new RegExp("\\[" + k + "\\]$"), '');
// Push
if(k.match(patterns.push)){
merge = self.build([], self.push_counter(reverse_key), merge);
}
// Fixed
else if(k.match(patterns.fixed)){
merge = self.build([], k, merge);
}
// Named
else if(k.match(patterns.named)){
merge = self.build({}, k, merge);
}
}
json = $.extend(true, json, merge);
});
return json;
};
})(jQuery);
how to about creating helper methods
For String
private static string MyStringConverter(object o)
{
if (o == DBNull.Value || o == null)
return "";
return o.ToString();
}
Usage
MyStringConverter(read["indexStringValue"])
For Int
private static int MyIntonverter(object o)
{
if (o == DBNull.Value || o == null)
return 0;
return Convert.ToInt32(o);
}
Usage
MyIntonverter(read["indexIntValue"])
For Date
private static DateTime? MyDateConverter(object o)
{
return (o == DBNull.Value || o == null) ? (DateTime?)null : Convert.ToDateTime(o);
}
Usage
MyDateConverter(read["indexDateValue"])
Note: for DateTime declare varialbe as
DateTime? variable;
Use this syntax:
CREATE TEMPORARY TABLE t1 (select * from t2);
There are 3 scenarios, you describe:
.c
files and with int i;
in the header..c
files and with int i=100;
in the header (or any other value; that doesn't matter)..c
file and with int i=100;
in the header.In each scenario, imagine the contents of the header file inserted into the .c
file and this .c
file compiled into a .o
file and then these linked together.
Then following happens:
works fine because of the already mentioned "tentative definitions": every .o
file contains one of them, so the linker says "ok".
doesn't work, because both .o
files contain a definition with a value, which collide (even if they have the same value) - there may be only one with any given name in all .o
files which are linked together at a given time.
works of course, because you have only one .o
file and so no possibility for collision.
IMHO a clean thing would be
extern int i;
or just int i;
into the header file,int i = 100;
) into file1.c
. In this case, this initialization gets used at the start of the program and the corresponding line in main()
can be omitted. (Besides, I hope the naming is only an example; please don't name any global variables as i
in real programs.)You can try something like this
IFNULL(NULLIF(X, '' ), 0)
Attribute X is assumed to be empty if it is an empty String, so after that you can declare as a zero instead of last value. In another case, it would remain its original value.
Anyway, just to give another way to do that.
declaring the list (and initializing it with an empty arraylist)
List<Card> cardList = new ArrayList<Card>();
adding an element:
Card card;
cardList.add(card);
iterating over elements:
for(Card card : cardList){
System.out.println(card);
}
int c = 10; String spaces = String.format("%" +c+ "c", ' '); this will solve your problem.
dynamic_cast should do the trick
TYPE& dynamic_cast<TYPE&> (object);
TYPE* dynamic_cast<TYPE*> (object);
The dynamic_cast
keyword casts a datum from one pointer or reference type to another, performing a runtime check to ensure the validity of the cast.
If you attempt to cast to pointer to a type that is not a type of actual object, the result of the cast will be NULL. If you attempt to cast to reference to a type that is not a type of actual object, the cast will throw a bad_cast
exception.
Make sure there is at least one virtual function in Base class to make dynamic_cast work.
Wikipedia topic Run-time type information
RTTI is available only for classes that are polymorphic, which means they have at least one virtual method. In practice, this is not a limitation because base classes must have a virtual destructor to allow objects of derived classes to perform proper cleanup if they are deleted from a base pointer.
Merge them in two steps, df1
and df2
first, and then the result of that to df3
.
In [33]: s1 = pd.merge(df1, df2, how='left', on=['Year', 'Week', 'Colour'])
I dropped year from df3 since you don't need it for the last join.
In [39]: df = pd.merge(s1, df3[['Week', 'Colour', 'Val3']],
how='left', on=['Week', 'Colour'])
In [40]: df
Out[40]:
Year Week Colour Val1 Val2 Val3
0 2014 A Red 50 NaN NaN
1 2014 B Red 60 NaN 60
2 2014 B Black 70 100 10
3 2014 C Red 10 20 NaN
4 2014 D Green 20 NaN 20
[5 rows x 6 columns]
Please see Pierre L'Ecuyer's work going back to the late 1980s and early 1990s. There are others as well. Creating a (pseudo) random number generator on your own, if you are not an expert, is pretty dangerous, because there is a high likelihood of either the results not being statistically random or in having a small period. Pierre (and others) have put together some good (pseudo) random number generators that are easy to implement. I use one of his LFSR generators.
https://www.iro.umontreal.ca/~lecuyer/myftp/papers/handstat.pdf
Phil Troy
<mvc:annotation-driven />
<mvc:default-servlet-handler />
<mvc:resources mapping="/resources/**" location="/resources/" />
<context:component-scan base-package="com.tridenthyundai.ains" />
<bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver" />
<bean id="messageSource"
class="org.springframework.context.support.ReloadableResourceBundleMessageSource">
<property name="basename" value="/WEB-INF/messages" />
</bean>
<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix">
<value>/WEB-INF/pages/</value>
</property>
<property name="suffix">
<value>.jsp</value>
</property>
</bean>
Something like this?
if so, type the HTML ✔
And ✓
gives a lighter one:
✓
It seems that CharEscapers from Google GData-java-client has what you want. It has uriPathEscaper method, uriQueryStringEscaper, and generic uriEscaper. (All return Escaper object which does actual escaping). Apache License.
First of all, it's considered bad practice to extend Object.prototype
. Instead, provide your feature as utility function on Object
, just like there already are Object.keys
, Object.assign
, Object.is
, ...etc.
I provide here several solutions:
reduce
and Object.keys
Object.assign
map
and spread syntax instead of reduce
Object.entries
and Object.fromEntries
reduce
and Object.keys
With reduce
and Object.keys
to implement the desired filter (using ES6 arrow syntax):
Object.filter = (obj, predicate) => _x000D_
Object.keys(obj)_x000D_
.filter( key => predicate(obj[key]) )_x000D_
.reduce( (res, key) => (res[key] = obj[key], res), {} );_x000D_
_x000D_
// Example use:_x000D_
var scores = {_x000D_
John: 2, Sarah: 3, Janet: 1_x000D_
};_x000D_
var filtered = Object.filter(scores, score => score > 1); _x000D_
console.log(filtered);
_x000D_
Note that in the above code predicate
must be an inclusion condition (contrary to the exclusion condition the OP used), so that it is in line with how Array.prototype.filter
works.
Object.assign
In the above solution the comma operator is used in the reduce
part to return the mutated res
object. This could of course be written as two statements instead of one expression, but the latter is more concise. To do it without the comma operator, you could use Object.assign
instead, which does return the mutated object:
Object.filter = (obj, predicate) => _x000D_
Object.keys(obj)_x000D_
.filter( key => predicate(obj[key]) )_x000D_
.reduce( (res, key) => Object.assign(res, { [key]: obj[key] }), {} );_x000D_
_x000D_
// Example use:_x000D_
var scores = {_x000D_
John: 2, Sarah: 3, Janet: 1_x000D_
};_x000D_
var filtered = Object.filter(scores, score => score > 1); _x000D_
console.log(filtered);
_x000D_
map
and spread syntax instead of reduce
Here we move the Object.assign
call out of the loop, so it is only made once, and pass it the individual keys as separate arguments (using the spread syntax):
Object.filter = (obj, predicate) => _x000D_
Object.assign(...Object.keys(obj)_x000D_
.filter( key => predicate(obj[key]) )_x000D_
.map( key => ({ [key]: obj[key] }) ) );_x000D_
_x000D_
// Example use:_x000D_
var scores = {_x000D_
John: 2, Sarah: 3, Janet: 1_x000D_
};_x000D_
var filtered = Object.filter(scores, score => score > 1); _x000D_
console.log(filtered);
_x000D_
Object.entries
and Object.fromEntries
As the solution translates the object to an intermediate array and then converts that back to a plain object, it would be useful to make use of Object.entries
(ES2017) and the opposite (i.e. create an object from an array of key/value pairs) with Object.fromEntries
(ES2019).
It leads to this "one-liner" method on Object
:
Object.filter = (obj, predicate) => _x000D_
Object.fromEntries(Object.entries(obj).filter(predicate));_x000D_
_x000D_
// Example use:_x000D_
var scores = {_x000D_
John: 2, Sarah: 3, Janet: 1_x000D_
};_x000D_
_x000D_
var filtered = Object.filter(scores, ([name, score]) => score > 1); _x000D_
console.log(filtered);
_x000D_
The predicate function gets a key/value pair as argument here, which is a bit different, but allows for more possibilities in the predicate function's logic.
Just use .contains
. For example, if you were checking if an ArrayList arr
contains a value val
, you would simply run arr.contains(val)
, which would return a boolean representing if the value is contained. For more information, see the docs for .contains
.
A type variable, <T>, can be any non-primitive type you specify: any class type, any interface type, any array type, or even another type variable.
The most commonly used type parameter names are:
In Java 7 it is permitted to instantiate like this:
Foo<String, Integer> foo = new Foo<>(); // Java 7
Foo<String, Integer> foo = new Foo<String, Integer>(); // Java 6
For Visual studio 2013, Windows 8...
C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\IDE\WcfTestClient.exe
In powershell you can to use severals commands, for looking for this commands digit: Get-Alias
;
So the cammands the can to use are:
write-host (ls MydirectoryName).Count
or
write-host (dir MydirectoryName).Count
or
write-host (Get-ChildrenItem MydirectoryName).Count
Quickest and may be the best solution is to have below content in <TOMCAT_INSTALL_DIR>/conf/Catalina/localhost/ROOT.xml
<Context
docBase="/your_webapp_location_directory"
path=""
reloadable="true"
/>
And your webapp will be available at http://<host>:<port>/
simple if u are using php Just append the current time at the end of the css like
<link href="css/name.css?<?php echo
time(); ?>" rel="stylesheet">
So now everytime u reload whatever it is , the time changes and browser thinks its a different file since the last bit keeps changing.... U can do this for any file u force the browser to always refresh using whatever scripting language u want
You can only return non-local objects by reference. The destructor may have invalidated some internal pointer, or whatever.
Don't be afraid of returning values -- it's fast!
If you are using Docker, you may try an image that has Ubuntu with System D already active with this command:
docker run -d --name redis --privileged -v /sys/fs/cgroup:/sys/fs/cgroup:ro jrei/systemd-ubuntu:18.04
Then you just need to run:
docker exec -it redis /bin/bash
and there you can just install Redis, start it, restart it or whatever you need.
The receiver must set port of receiver to match port set in sender DatagramPacket. For debugging try listening on port > 1024 (e.g. 8000 or 9000). Ports < 1024 are typically used by system services and need admin access to bind on such a port.
If the receiver sends packet to the hard-coded port it's listening to (e.g. port 57) and the sender is on the same machine then you would create a loopback to the receiver itself. Always use the port specified from the packet and in case of production software would need a check in any case to prevent such a case.
Another reason a packet won't get to destination is the wrong IP address specified in the sender. UDP unlike TCP will attempt to send out a packet even if the address is unreachable and the sender will not receive an error indication. You can check this by printing the address in the receiver as a precaution for debugging.
In the sender you set:
byte [] IP= { (byte)192, (byte)168, 1, 106 };
InetAddress address = InetAddress.getByAddress(IP);
but might be simpler to use the address in string form:
InetAddress address = InetAddress.getByName("192.168.1.106");
In other words, you set target as 192.168.1.106. If this is not the receiver then you won't get the packet.
Here's a simple UDP Receiver that works :
import java.io.IOException;
import java.net.*;
public class Receiver {
public static void main(String[] args) {
int port = args.length == 0 ? 57 : Integer.parseInt(args[0]);
new Receiver().run(port);
}
public void run(int port) {
try {
DatagramSocket serverSocket = new DatagramSocket(port);
byte[] receiveData = new byte[8];
String sendString = "polo";
byte[] sendData = sendString.getBytes("UTF-8");
System.out.printf("Listening on udp:%s:%d%n",
InetAddress.getLocalHost().getHostAddress(), port);
DatagramPacket receivePacket = new DatagramPacket(receiveData,
receiveData.length);
while(true)
{
serverSocket.receive(receivePacket);
String sentence = new String( receivePacket.getData(), 0,
receivePacket.getLength() );
System.out.println("RECEIVED: " + sentence);
// now send acknowledgement packet back to sender
DatagramPacket sendPacket = new DatagramPacket(sendData, sendData.length,
receivePacket.getAddress(), receivePacket.getPort());
serverSocket.send(sendPacket);
}
} catch (IOException e) {
System.out.println(e);
}
// should close serverSocket in finally block
}
}
Your result object is a jQuery element, not a javascript array. The array you wish must be under .get()
As the return value is a jQuery object, which contains an array, it's very common to call .get() on the result to work with a basic array. http://api.jquery.com/map/
See Creating a shared and static library with the gnu compiler [gcc]
gcc -c -o out.o out.c
-c
means to create an intermediary object file, rather than an executable.
ar rcs libout.a out.o
This creates the static library. r
means to insert with replacement, c
means to create a new archive, and s
means to write an index. As always, see the man page for more info.
Similar to Ryan Rodemoyer's answer, I found that when the UriTemplate on the Contract is not valid you can get this error. In my case, I was using the same parameter twice. For example:
/Root/{Name}/{Name}
You can try something like this:
<context:property-placeholder
location="${ext.properties.dir:classpath:}/servlet.properties" />
And define ext.properties.dir
property in your application server / jvm, otherwise the default properties location "classpath:/" (i.e., classes dir of .jar or .war) would be used:
-Dext.properties.dir=file:/usr/local/etc/
BTW, very useful blog post.
Based on the given answers and information in the question, this is the code you should use:
public static boolean doesURLExist(URL url) throws IOException
{
// We want to check the current URL
HttpURLConnection.setFollowRedirects(false);
HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();
// We don't need to get data
httpURLConnection.setRequestMethod("HEAD");
// Some websites don't like programmatic access so pretend to be a browser
httpURLConnection.setRequestProperty("User-Agent", "Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.1.2) Gecko/20090729 Firefox/3.5.2 (.NET CLR 3.5.30729)");
int responseCode = httpURLConnection.getResponseCode();
// We only accept response code 200
return responseCode == HttpURLConnection.HTTP_OK;
}
Of course tested and working.
You can use the date.js library:
http://code.google.com/p/datejs/
And just do this
Date.today().next().month();
You will have the exact value for today + 1 month (including days)
List indexes of -x mean the xth item from the end of the list, so n[-1]
means the last item in the list n
. Any good Python tutorial should have told you this.
It's an unusual convention that only a few other languages besides Python have adopted, but it is extraordinarily useful; in any other language you'll spend a lot of time writing n[n.length-1]
to access the last item of a list.
table-layout: fixed
will get force the cells to fit the table (and not the other way around), e.g.:
<table style="border: 1px solid black; width: 100%; word-wrap:break-word;
table-layout: fixed;">
<tr>
<td>
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
</td>
</tr>
</table>
If you are using anaconda to go into python environment you should have build up different environment for different python version
The following scripts may help you build up a new environment(running in anaconda prompt)
conda create -n py27 python=2.7 #for version 2.7
activate py27
conda create -n py36 python=3.6 #for version 3.6
activate py36
you may leave the environment back to your global env by typing
deactivate py27
or
deactivate py36
and then you can either switch to different environment using your anaconda UI with @Francisco Camargo 's answer
or you can stick to anaconda prompt using @Dan 's answer
There is an article here that describes your problem
http://www.hyperarts.com/blog/facebook-fan-pages-content-for-fans-only-static-fbml/
<fb:visible-to-connection>
Fans will see this content.
<fb:else>
Non-fans will see this content.
</fb:else>
</fb:visible-to-connection>
Add a z-index to your border-radius'd item, and it will mask the things inside of it.
I've found that it's best not to mess around with setting the measured dimensions yourself. There's actually a bit of negotiation that goes on between the parent and child views and you don't want to re-write all that code.
What you can do, though, is modify the measureSpecs, then call super with them. Your view will never know that it's getting a modified message from its parent and will take care of everything for you:
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int parentHeight = MeasureSpec.getSize(heightMeasureSpec);
int myWidth = (int) (parentHeight * 0.5);
super.onMeasure(MeasureSpec.makeMeasureSpec(myWidth, MeasureSpec.EXACTLY), heightMeasureSpec);
}
To add to wflynny's answer above, you can find the available colormaps here
Example:
import matplotlib.cm as cm
plt.scatter(x, y, c=t, cmap=cm.jet)
or alternatively,
plt.scatter(x, y, c=t, cmap='jet')
function js_to_as( str ){
if (me && me.onChange)
me.onChange(str);
}
Expanding a bit on the answers from @Guru and @Ronnis, you can hide the sequence and make it look more like an auto-increment using a trigger, and have a procedure that does the insert for you and returns the generated ID as an out parameter.
create table batch(batchid number,
batchname varchar2(30),
batchtype char(1),
source char(1),
intarea number)
/
create sequence batch_seq start with 1
/
create trigger batch_bi
before insert on batch
for each row
begin
select batch_seq.nextval into :new.batchid from dual;
end;
/
create procedure insert_batch(v_batchname batch.batchname%TYPE,
v_batchtype batch.batchtype%TYPE,
v_source batch.source%TYPE,
v_intarea batch.intarea%TYPE,
v_batchid out batch.batchid%TYPE)
as
begin
insert into batch(batchname, batchtype, source, intarea)
values(v_batchname, v_batchtype, v_source, v_intarea)
returning batchid into v_batchid;
end;
/
You can then call the procedure instead of doing a plain insert, e.g. from an anoymous block:
declare
l_batchid batch.batchid%TYPE;
begin
insert_batch(v_batchname => 'Batch 1',
v_batchtype => 'A',
v_source => 'Z',
v_intarea => 1,
v_batchid => l_batchid);
dbms_output.put_line('Generated id: ' || l_batchid);
insert_batch(v_batchname => 'Batch 99',
v_batchtype => 'B',
v_source => 'Y',
v_intarea => 9,
v_batchid => l_batchid);
dbms_output.put_line('Generated id: ' || l_batchid);
end;
/
Generated id: 1
Generated id: 2
You can make the call without an explicit anonymous block, e.g. from SQL*Plus:
variable l_batchid number;
exec insert_batch('Batch 21', 'C', 'X', 7, :l_batchid);
... and use the bind variable :l_batchid
to refer to the generated value afterwards:
print l_batchid;
insert into some_table values(:l_batch_id, ...);
If the --args
parameter is not working on your machine (i.e. on Solaris 8), you may start gdb like
gdb -ex "set args <arg 1> <arg 2> ... <arg n>"
And you can combine this with inputting a file to stdin and "running immediatelly":
gdb -ex "set args <arg 1> <arg 2> ... <arg n> < <input file>" -ex "r"
You can call either string's compareTo method (java.lang.String.compareTo). This feature is well documented on the java documentation site.
Here is a short program that demonstrates it:
class StringCompareExample {
public static void main(String args[]){
String s1 = "Project"; String s2 = "Sunject";
verboseCompare(s1, s2);
verboseCompare(s2, s1);
verboseCompare(s1, s1);
}
public static void verboseCompare(String s1, String s2){
System.out.println("Comparing \"" + s1 + "\" to \"" + s2 + "\"...");
int comparisonResult = s1.compareTo(s2);
System.out.println("The result of the comparison was " + comparisonResult);
System.out.print("This means that \"" + s1 + "\" ");
if(comparisonResult < 0){
System.out.println("lexicographically precedes \"" + s2 + "\".");
}else if(comparisonResult > 0){
System.out.println("lexicographically follows \"" + s2 + "\".");
}else{
System.out.println("equals \"" + s2 + "\".");
}
System.out.println();
}
}
Here is a live demonstration that shows it works: http://ideone.com/Drikp3
I used this not elegant but FAST,EASY and WORKING system. I do not see why can not work because the only way for the system to allow create a big size array and access parts is without cutting it in parts:
#define DIM 3
#define WORMS 50000 //gusanos
void halla_centros_V000(double CENW[][DIM])
{
CENW[i][j]=...
...
}
int main()
{
double *CENW_MEM=new double[WORMS*DIM];
double (*CENW)[DIM];
CENW=(double (*)[3]) &CENW_MEM[0];
halla_centros_V000(CENW);
delete[] CENW_MEM;
}
This is a mix of the two previous answers:
PreparedStatement ps = c.prepareStatement("INSERT INTO employees VALUES (?, ?)");
ps.setString(1, "John");
ps.setString(2,"Doe");
ps.addBatch();
ps.clearParameters();
ps.setString(1, "Dave");
ps.setString(2,"Smith");
ps.addBatch();
ps.clearParameters();
int[] results = ps.executeBatch();
You can use this code without arrows.....i.e by clicking on header it automatically shows ascending and descending order of elements
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<script src="scripts/angular.min.js"></script>
<script src="Scripts/Script.js"></script>
<style>
table {
border-collapse: collapse;
font-family: Arial;
}
td {
border: 1px solid black;
padding: 5px;
}
th {
border: 1px solid black;
padding: 5px;
text-align: left;
}
</style>
</head>
<body ng-app="myModule">
<div ng-controller="myController">
<br /><br />
<table>
<thead>
<tr>
<th>
<a href="#" ng-click="orderByField='name'; reverseSort = !reverseSort">
Name
</a>
</th>
<th>
<a href="#" ng-click="orderByField='dateOfBirth'; reverseSort = !reverseSort">
Date Of Birth
</a>
</th>
<th>
<a href="#" ng-click="orderByField='gender'; reverseSort = !reverseSort">
Gender
</a>
</th>
<th>
<a href="#" ng-click="orderByField='salary'; reverseSort = !reverseSort">
Salary
</a>
</th>
</tr>
</thead>
<tbody>
<tr ng-repeat="employee in employees | orderBy:orderByField:reverseSort">
<td>
{{ employee.name }}
</td>
<td>
{{ employee.dateOfBirth | date:"dd/MM/yyyy" }}
</td>
<td>
{{ employee.gender }}
</td>
<td>
{{ employee.salary }}
</td>
</tr>
</tbody>
</table>
</div>
<script>
var app = angular
.module("myModule", [])
.controller("myController", function ($scope) {
var employees = [
{
name: "Ben", dateOfBirth: new Date("November 23, 1980"),
gender: "Male", salary: 55000
},
{
name: "Sara", dateOfBirth: new Date("May 05, 1970"),
gender: "Female", salary: 68000
},
{
name: "Mark", dateOfBirth: new Date("August 15, 1974"),
gender: "Male", salary: 57000
},
{
name: "Pam", dateOfBirth: new Date("October 27, 1979"),
gender: "Female", salary: 53000
},
{
name: "Todd", dateOfBirth: new Date("December 30, 1983"),
gender: "Male", salary: 60000
}
];
$scope.employees = employees;
$scope.orderByField = 'name';
$scope.reverseSort = false;
});
</script>
</body>
</html>
git stash branch
will works, which creates a new branch for you, checks out
the commit you were on when you stashed your work, reapplies your work there, and
then drops the stash if it applies successfully. check this
Easiest way to see if the file is being cached is to append a query string to the <link />
element so that the browser will re-load it.
To do this you can change your stylesheet reference to something like
<link rel="stylesheet" type="text/css" href="/css/stylesheet.css?v=1" />
Note the v=1
part. You can update this each time you make a new version to see if it is indeed being cached.
After building the project right click on the project Debug > “Debug Configurations”, as shown below
In the “debugger” tab, ensure the “GDB command file” now points to your “.gdbinit” file. Else, input the path to your “.gdbinit” configuration file :
Click “Apply” and “Debug”. A native DOS command line should be launched as shown below
I was facing a similar problem. The solution that I found out was :
Declare an interface in your DialogFragment just like James McCracken has explained above.
Implement the interface in your activity (not fragment! That is not a good practice).
From the callback method in your activity, call a required public function in your fragment which does the job that you want to do.
Thus, it becomes a two-step process : DialogFragment -> Activity and then Activity -> Fragment
Knowing this thread is marked as solved, it shows up early on Google Search for the given term. So I thought it might be useful to mention another reason that can lead to this error.
If you enabled "safe/secure cookies", that has to be disabled for phpMyAdmin as it wont work with them being activated. So make sure you have nothing like:
Header set Set-Cookie HttpOnly;Secure
in your config.
another way to single instance an application is to check their hash sums. after messing around with mutex (didn't work as i want) i got it working this way:
[DllImport("user32.dll")]
[return: MarshalAs(UnmanagedType.Bool)]
static extern bool SetForegroundWindow(IntPtr hWnd);
public Main()
{
InitializeComponent();
Process current = Process.GetCurrentProcess();
string currentmd5 = md5hash(current.MainModule.FileName);
Process[] processlist = Process.GetProcesses();
foreach (Process process in processlist)
{
if (process.Id != current.Id)
{
try
{
if (currentmd5 == md5hash(process.MainModule.FileName))
{
SetForegroundWindow(process.MainWindowHandle);
Environment.Exit(0);
}
}
catch (/* your exception */) { /* your exception goes here */ }
}
}
}
private string md5hash(string file)
{
string check;
using (FileStream FileCheck = File.OpenRead(file))
{
MD5 md5 = new MD5CryptoServiceProvider();
byte[] md5Hash = md5.ComputeHash(FileCheck);
check = BitConverter.ToString(md5Hash).Replace("-", "").ToLower();
}
return check;
}
it checks only md5 sums by process id.
if an instance of this application was found, it focuses the running application and exit itself.
you can rename it or do what you want with your file. it wont open twice if the md5 hash is the same.
may someone has suggestions to it? i know it is answered, but maybe someone is looking for a mutex alternative.
I'm a PHP developer and to be able to work on my development environment with a certificate, I was able to do the same by finding the real SSL HTTPS/HTTP Certificate and deleting it.
The steps are :
You can find more information at : http://classically.me/blogs/how-clear-hsts-settings-major-browsers
Although this solution is not the best, Chrome currently does not have any good solution for the moment. I have escalated this situation with their support team to help improve user experience.
Edit : you have to repeat the steps every time you will go on the production site.
Visual Studio has got now integrated support for range checking and type checking :-
Try this :- For RANGE CHECKING Before validating/checking for a particular range of numbers Switch on to design view from markup view .Then :-
View>Toolbox>Validation
Now Drag on RangeValidator to your design page where you want to show the error message(ofcourse if user is inputting out of range value) now click on your RangeValidator control . Right click and select properties . In the Properties window (It is usually opened below solution bar) select on ERROR MESSAGE . Write :-
Number must be in range.
Now select on Control to validate and select your TextboxID (or write it anyways) from the drop down.Locate Type in the property bar itself and select down Integer.
Just above it you will find maximum and minimum value .Type in your desired number .
For Type checking (without any Range)
Before validating/checking for a particular range of numbers Switch on to design view from markup view .Then :-
View>Toolbox>Validation
Now Drag on CompareValidator to your design page where you want to show the error message(ofcourse if user is inputting some text in it). now click on your CompareValidator control . Right click and select properties . In the Properties window (It is usually opened below solution bar) select on ERROR MESSAGE . Write:-
Value must be a number .
Now locate ControltoValidate option and write your controlID name in it(alternatively you can also select from drop down).Locate the Operator option and write DataTypeCheck(alternatively you can also select from drop down)in it .Again locate the Type option and write Integer in it .
That's sit.
Alternatively you can write the following code in your aspx page :- <%--to validate without any range--%>
You can use %
:
SELECT * FROM datetable WHERE datecol LIKE '2012-12-25%'
put your php into a hidden div and than call it with javascript
php part
<div id="mybox" style="visibility:hidden;"> some php here </div>
javascript part
var myfield = document.getElementById("mybox");
myfield.visibility = 'visible';
now, you can do anything with myfield...
This is what I did:
First, I downloaded the .tar
file for Java JDK and JRE from the Oracle site.
Extract the .tar
file into the opt folder.
I faced an issue that despite setting my environment variables, JAVA_HOME
and PATH
for Java 9, it was still showing Java 8 as my runtime environment. Hence, I symlinked from the Java 9.0.4 directory to /user/bin
using the ln
command.
I used java -version
command to check which version of java is currently set as my default java runtime environment.
The above-mentioned responses work well but if you want to pass data between 2 sibling components, then the event bus can also be used. Check out this blog which would help you understand better.
supppose for 2 components : CompA & CompB having same parent and main.js for setting up main vue app. For passing data from CompA to CompB without involving parent component you can do the following.
in main.js file, declare a separate global Vue instance, that will be event bus.
export const bus = new Vue();
In CompA, where the event is generated : you have to emit the event to bus.
methods: {
somethingHappened (){
bus.$emit('changedSomething', 'new data');
}
}
Now the task is to listen the emitted event, so, in CompB, you can listen like.
created (){
bus.$on('changedSomething', (newData) => {
console.log(newData);
})
}
Advantages:
Try -o "ProxyCommand=nc --proxy HOST:PORT %h %p"
for command in question. It worked on OEL6 but need to modify as mentioned for OEL7.
One of the reasons for static vs. normal have to do with classloading. You cannot instantiate an inner class in the constructor of it's parent.
PS: I've always understood 'nested' and 'inner' to be interchangeable. There may be subtle nuances in the terms but most Java developers would understand either.
This is my way of doing it. It may be useful to others :
private void updateType(){
// Log.i(TAG,"updateType");
StringRequest request = new StringRequest(Request.Method.POST, url, new Response.Listener<String>() {
@Override
public void onResponse(String response) {
// running on main thread-------
try {
JSONObject res = new JSONObject(response);
res.getString("result");
System.out.println("Response:" + res.getString("result"));
}else{
CustomTast ct=new CustomTast(context);
ct.showCustomAlert("Network/Server Disconnected",R.drawable.disconnect);
}
} catch (Exception e) {
e.printStackTrace();
//Log.e("Response", "==> " + e.getMessage());
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError volleyError) {
// running on main thread-------
VolleyLog.d(TAG, "Error: " + volleyError.getMessage());
}
}) {
protected Map<String, String> getParams() {
HashMap<String, String> hashMapParams = new HashMap<String, String>();
hashMapParams.put("key", "value");
hashMapParams.put("key", "value");
hashMapParams.put("key", "value"));
hashMapParams.put("key", "value");
System.out.println("Hashmap:" + hashMapParams);
return hashMapParams;
}
};
AppController.getInstance().addToRequestQueue(request);
}
To point out what I had to dig out of Chris Johansen's chat with OP (linked from a reply to an answer):
git add vendor/plugins/open_flash_chart_2
# will add gitlink, content will stay untracked
git add vendor/plugins/open_flash_chart_2/
# NOTICE THE SLASH!!!!
The second form will add it without gitlink, and the contents are trackable. The .git dir is conveniently & automatically ignored. Thank you Chris!
The ID of a form input element has nothing to do with the data contained within the element. IDs are for hooking the element with JavaScript and CSS. The name attribute, however, is used in the HTTP request sent by your browser to the server as a variable name associated with the data contained in the value attribute.
For instance:
<form>
<input type="text" name="user" value="bob">
<input type="password" name="password" value="abcd1234">
</form>
When the form is submitted, the form data will be included in the HTTP header like this:
If you add an ID attribute, it will not change anything in the HTTP header. It will just make it easier to hook it with CSS and JavaScript.
Try explode:
$myString = "9,[email protected],8";
$myArray = explode(',', $myString);
print_r($myArray);
Output :
Array
(
[0] => 9
[1] => [email protected]
[2] => 8
)
If you really want to have named parameters plus have your objects be instances of your class, you can do the following:
class bar {
constructor (options?: {length: number; height: number;}) {
if (options) {
this.length = options.length;
this.height = options.height;
}
}
length: number;
height: number;
}
class foo {
bars: bar[] = new Array();
}
var ham = new foo();
ham.bars = [
new bar({length: 4, height: 2}),
new bar({length: 1, height: 3})
];
Also here's the related item on typescript issue tracker.
I have servers with proper lists of hosts and IPs. None of that allow all
stuff. My fix was to put the hostname of my new workstation into the list. So the advise is:
Make sure the computer you're using is ACTUALLY on the list of allowed IPs. Look at IPs from logmessages, resolve names, check ifconfig
/ ipconfig
etc.
*Google sent me due to the error-message.
Struggling with this myself. This is my take:
https://gist.github.com/2639448:
require 'csv'
class CSV
def CSV.unparse array
CSV.generate do |csv|
array.each { |i| csv << i }
end
end
end
CSV.unparse [ %w(your array), %w(goes here) ]
In some cases first your need to Release, then Remove and Re-add via Virtual Media Manager
I strongly suggest AngularJS's ng-include
whether your project is AngularJS or not.
<script src=".../angular.min.js"></script>
<body ng-app="ngApp" ng-controller="ngCtrl">
<div ng-include="'another.html'"></div>
<script>
var app = angular.module('ngApp', []);
app.controller('ngCtrl', function() {});
</script>
</body>
You can find CDN (or download Zip) from AngularJS and more information from W3Schools.
It's pretty pointless to return a const
value from a function.
It's difficult to get it to have any effect on your code:
const int foo() {
return 3;
}
int main() {
int x = foo(); // copies happily
x = 4;
}
and:
const int foo() {
return 3;
}
int main() {
foo() = 4; // not valid anyway for built-in types
}
// error: lvalue required as left operand of assignment
Though you can notice if the return type is a user-defined type:
struct T {};
const T foo() {
return T();
}
int main() {
foo() = T();
}
// error: passing ‘const T’ as ‘this’ argument of ‘T& T::operator=(const T&)’ discards qualifiers
it's questionable whether this is of any benefit to anyone.
Returning a reference is different, but unless Object
is some template parameter, you're not doing that.
In my case, ReSharper gave me this additional exception in the test window:
2017.06.15 12:56:57.621 ERROR Exploration failed with the exception:
System.AggregateException: One or more errors occurred. ---> System.Threading.Tasks.TaskCanceledException: A task was canceled.
--- End of inner exception stack trace ---
at System.Threading.Tasks.Task.Wait(Int32 millisecondsTimeout, CancellationToken cancellationToken)
at JetBrains.ReSharper.UnitTestFramework.Launch.Stages.DiscoveryStage.Run(CancellationToken token)
---> (Inner Exception #0) System.Threading.Tasks.TaskCanceledException: A task was canceled.<---
it ended up that the test projects giving this error both were not set to build at all in the Configuration Manager. Checking the checkbox to build the 2 test projects and rebuilding sorted for me.
Assuming you use Python 2.7 (not 3):
print "I have", card.price
(as mentioned above).
print "I have %s" % card.price
(using string formatting)
print " ".join(map(str, ["I have", card.price]))
(by joining lists)
There are a lot of ways to do the same, actually. I would prefer the second one.
$('button').toggle(
function() {
$('#B').css('left', '0')
}, function() {
$('#B').css('left', '200px')
})
You can also see any animated version at http://jsfiddle.net/hThGb/2/
As has already been pointed out by others, using a function should be considered best practice.
However, here is another approach, leveraging xargs
:
alias junk="xargs -I "{}" -- mv "{}" "~/.Trash" <<< "
Note that this has side effects regarding redirection of streams.
This happened to me just today, only after I added a .png image with 'hide extension' ticked in the get info. (Right click image) Ths image was added to the file directory of my Xcode project.
When unticked box and re-adding the the .png image to directory of Xcode, I then Cleaned and Built and worked fine after that, a very strange bug if you ask me.
Just install package Synced?Sidebar?Bg:it will change the sidebar theme based on current color scheme.But it seems that every time you change the color scheme,sidebar will be changed after you open file Preferences.sublime-settings
var path = require("path");
var filepath = "C:\\Python27\\ArcGIS10.2\\python.exe";
var name = path.parse(filepath).name;
// returns
'python'
Above code returns the name of the file without extension, if you need the name with extention use
var path = require("path");
var filepath = "C:\\Python27\\ArcGIS10.2\\python.exe";
var name = path.basename(filepath);
// returns
'python.exe'
I'm thinking no. Bookmarks/favorites should be under the control of the user, imagine if any site you visited could insert itself into your bookmarks with just some javascript.
Simply add []
to those names like
<input type="text" class="form-control" placeholder="Titel" name="levels[level][]">
<input type="text" class="form-control" placeholder="Titel" name="levels[build_time][]">
Take that template and then you can add those even using a loop.
Then you can add those dynamically as much as you want, without having to provide an index. PHP will pick them up just like your expected scenario example.
Edit
Sorry I had braces in the wrong place, which would make every new value as a new array element. Use the updated code now and this will give you the following array structure
levels > level (Array)
levels > build_time (Array)
Same index on both sub arrays will give you your pair. For example
echo $levels["level"][5];
echo $levels["build_time"][5];
item=sp.getItemAtPosition(i).toString();
list.add(item);
adapter.notifyDataSetChanged () ;
If you have MySQL version >= 5.7, then you can try this:
SELECT JSON_EXTRACT(name, "$.id") AS name
FROM table
WHERE JSON_EXTRACT(name, "$.id") > 3
Output:
+-------------------------------+
| name |
+-------------------------------+
| {"id": "4", "name": "Betty"} |
+-------------------------------+
Please check MySQL reference manual for more details:
https://dev.mysql.com/doc/refman/5.7/en/json-search-functions.html
I tried this query and it works for me.
SELECT username FROM dba_users
ORDER BY username;
If you want to get the list of all that users which are created by end-user, then you can try this:
SELECT username FROM dba_users where Default_TableSpace not in ('SYSAUX', 'SYSTEM', 'USERS')
ORDER BY username;
If the first column is always the same size (including the spaces), then you can just take those characters (via LEFT
) and clean up the spaces (with RTRIM
):
SELECT RTRIM(LEFT(YourColumn, YourColumnSize))
Alternatively, you can extract the second (or third, etc.) column (using SUBSTRING
):
SELECT RTRIM(SUBSTRING(YourColumn, PreviousColumnSizes, YourColumnSize))
One benefit of this approach (especially if YourColumn
is the result of a computation) is that YourColumn
is only specified once.
I just ran into this problem and decided to debug it myself since i couldn't find a solution on the internet. All i did is change the mainClassName to it's whole path(with the correct subdirectories in the project ofc)
mainClassName = 'main.java.hello.HelloWorld'
I know it's been almost one year since the post has been made, but i think someone will find this information useful.
Happy coding.
Simply :first
works for me, why isn't this mentioned yet?
Looks like the change()
function is only called when you check a radio button, not when you uncheck it. The solution I used is to bind the change event to every radio button:
$("#r1, #r2, #r3").change(function () {
Or you could give all the radio buttons the same name:
$("input[name=someRadioGroup]:radio").change(function () {
Here's a working jsfiddle example (updated from Chris Porter's comment.)
Per @Ray's comment, you should avoid using names with .
in them. Those names work in jQuery 1.7.2 but not in other versions (jsfiddle example.).
Double quotes can be achieved using VBA in one of two ways
First one is often the best
"...text..." & Chr(34) & "...text..."
Or the second one, which is more literal
"...text..." & """" & "...text..."
In C++ 17 you can use inline variables:
class A {
private:
static inline const std::string my_string = "some useful string constant";
};
Note that this is different from abyss.7's answer: This one defines an actual std::string
object, not a const char*
SJF are two type - i) non preemptive SJF ii)pre-emptive SJF
I have re-arranged the processes according to Arrival time. here is the non preemptive SJF
A.T= Arrival Time
B.T= Burst Time
C.T= Completion Time
T.T = Turn around Time = C.T - A.T
W.T = Waiting Time = T.T - B.T
Here is the preemptive SJF Note: each process will preempt at time a new process arrives.Then it will compare the burst times and will allocate the process which have shortest burst time. But if two process have same burst time then the process which came first that will be allocated first just like FCFS.
unbind() doesn't work with hardcoded inline events.
So, for example, if you want to unbind the mouseover event from
<div id="some_div" onmouseover="do_something();">
, I found that $('#some_div').attr('onmouseover','')
is a quick and dirty way to achieve it.
A maybe not-so-elegant method, which I think is just a variation of what some other people have said, is to just hardcode it. Many journals have a template that in some way allows for table footnotes, so I try to keep things pretty basic. Although, there really are some incredible packages already out there, and I think this thread does a good job of pointing that out.
\documentclass{article}
\begin{document}
\begin{table}[!th]
\renewcommand{\arraystretch}{1.3} % adds row cushion
\caption{Data, level$^a$, and sources$^b$}
\vspace{4mm}
\centering
\begin{tabular}{|l|l|c|c|}
\hline
\textbf{Data} & \textbf{Description} & \textbf{Level} & \textbf{Source} \\
\hline
\hline
Data1 & Description. . . . . . . . . . . . . . . . . . & cnty & USGS \\
\hline
Data2 & Description. . . . . . . . . . . . . . . . . . & MSA & USGS \\
\hline
Data3 & Description. . . . . . . . . . . . . . . . . . & cnty & Census \\
\hline
\end{tabular}
\end{table}
\footnotesize{$^a$ The smallest spatial unit is county, $^b$ more details in appendix A}\\
\end{document}
You're accessing the latitude and longitude incorrectly.
Try
<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false"></script>
<script type="text/javascript">
var geocoder = new google.maps.Geocoder();
var address = "new york";
geocoder.geocode( { 'address': address}, function(results, status) {
if (status == google.maps.GeocoderStatus.OK) {
var latitude = results[0].geometry.location.lat();
var longitude = results[0].geometry.location.lng();
alert(latitude);
}
});
</script>
For some kind of reason my NULL values where of data length 8. That is why none of the abovementioned seemed to work. If you encounter the same problem, use the following code:
--Check the length of your NULL values
SELECT DATALENGTH(COLUMN) as length_column
FROM your_table
--Filter the length of your NULL values (8 is used as example)
WHERE DATALENGTH(COLUMN) > 8
You might also try
Application.CalculateFull
or
Application.CalculateFullRebuild
if you don't mind rebuilding all open workbooks, rather than just the active worksheet. (CalculateFullRebuild
rebuilds dependencies as well.)
Template argument deduction for class templates
[*this]{ std::cout << could << " be " << useful << '\n'; }
[[fallthrough]]
, [[nodiscard]]
, [[maybe_unused]]
attributes
using
in attributes to avoid having to repeat an attribute namespace.
Compilers are now required to ignore non-standard attributes they don't recognize.
Simple static_assert(expression);
with no string
no throw
unless throw()
, and throw()
is noexcept(true)
.
std::tie
with auto
const auto [it, inserted] = map.insert( {"foo", bar} );
it
and inserted
with deduced type from the pair
that map::insert
returns.std::array
s and relatively flat structsif (init; condition)
and switch (init; condition)
if (const auto [it, inserted] = map.insert( {"foo", bar} ); inserted)
if(decl)
to cases where decl
isn't convertible-to-bool sensibly.Generalizing range-based for loops
Fixed order-of-evaluation for (some) expressions with some modifications
.then
on future work.Forward progress guarantees (FPG) (also, FPGs for parallel algorithms)
u8'U', u8'T', u8'F', u8'8'
character literals (string already existed)
inherited constructors fixes to some corner cases (see P0136R0 for examples of behavior changes)
std::string
like reference-to-character-array or substringstring const&
again. Also can make parsing a bajillion times faster."hello world"sv
char_traits
std::byte
off more than they could chew.
std::invoke
std::apply
std::make_from_tuple
, std::apply
applied to object construction
is_invocable
, is_invocable_r
, invoke_result
result_of
is_invocable<Foo(Args...), R>
is "can you call Foo
with Args...
and get something compatible with R
", where R=void
is default.invoke_result<Foo, Args...>
is std::result_of_t<Foo(Args...)>
but apparently less confusing?[class.directory_iterator]
and [class.recursive_directory_iterator]
fstream
s can be opened with path
s, as well as with const path::value_type*
strings.
for_each_n
reduce
transform_reduce
exclusive_scan
inclusive_scan
transform_exclusive_scan
transform_inclusive_scan
Added for threading purposes, exposed even if you aren't using them threaded
atomic<T>
::is_always_lockfree
std::lock
pain when locking more than one mutex at a time.std
algorithms, and related machinery[func.searchers]
and [alg.search]
std::function
for allocatorsstd::sample
, sampling from a range?
try_emplace
and insert_or_assign
Splicing for map<>
, unordered_map<>
, set<>
, and unordered_set<>
non-const .data()
for string.
non-member std::size
, std::empty
, std::data
std::begin
/end
The emplace
family of functions now returns a reference to the created object.
unique_ptr<T[]>
fixes and other unique_ptr
tweaks.weak_from_this
and some fixed to shared from thisstd
datatype improvements:{}
construction of std::tuple
and other improvementsC++17 library is based on C11 instead of C99
Reserved std[0-9]+
for future standard libraries
std
implementations exposedstd::clamp()
std::clamp( a, b, c ) == std::max( b, std::min( a, c ) )
roughlygcd
and lcm
std::uncaught_exceptions
std::as_const
std::bool_constant
_v
template variablesstd::void_t<T>
std::owner_less<void>
std::less<void>
, but for smart pointers to sort based on contentsstd::chrono
polishstd::conjunction
, std::disjunction
, std::negation
exposedstd::not_fn
std
std::less
.<codecvt>
memory_order_consume
result_of
, replaced with invoke_result
shared_ptr::unique
, it isn't very threadsafeIsocpp.org has has an independent list of changes since C++14; it has been partly pillaged.
Naturally TS work continues in parallel, so there are some TS that are not-quite-ripe that will have to wait for the next iteration. The target for the next iteration is C++20 as previously planned, not C++19 as some rumors implied. C++1O has been avoided.
Initial list taken from this reddit post and this reddit post, with links added via googling or from the above isocpp.org page.
Additional entries pillaged from SD-6 feature-test list.
clang's feature list and library feature list are next to be pillaged. This doesn't seem to be reliable, as it is C++1z, not C++17.
these slides had some features missing elsewhere.
While "what was removed" was not asked, here is a short list of a few things ((mostly?) previous deprecated) that are removed in C++17 from C++:
register
, keyword reserved for future usebool b; ++b;
<functional>
stuff, random_shuffle
std::function
There were rewordings. I am unsure if these have any impact on code, or if they are just cleanups in the standard:
P0505R0 (constexpr chrono)
P0418R2 (atomic tweaks)
P0512R0 (template argument deduction tweaks)
P0490R0 (structured binding tweaks)
P0513R0 (changes to std::hash
)
P0502R0 (parallel exceptions)
P0509R1 (updating restrictions on exception handling)
P0012R1 (make exception specifications be part of the type system)
P0510R0 (restrictions on variants)
P0504R0 (tags for optional/variant/any)
P0497R0 (shared ptr tweaks)
P0508R0 (structured bindings node handles)
P0521R0 (shared pointer use count and unique changes?)
https://isocpp.org/files/papers/p0636r0.html
A simple one would be
\d{4}-\d{2}-\d{2}
but this does not restrict month to 1-12 and days from 1 to 31.
There are more complex checks like in the other answers, by the way pretty clever ones. Nevertheless you have to check for a valid date, because there are no checks for if a month has 28, 30, or 31 days.
In addition to Biff MaGriff's answer. To export the file using JQuery, redirect the user to a new page.
$('#btn_export').click(function () {
window.location.href = 'NewsLetter/Export';
});
Declare these methods first..
public static void putPref(String key, String value, Context context) {
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
SharedPreferences.Editor editor = prefs.edit();
editor.putString(key, value);
editor.commit();
}
public static String getPref(String key, Context context) {
SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context);
return preferences.getString(key, null);
}
Then call this when you want to put a pref:
putPref("myKey", "mystring", getApplicationContext());
call this when you want to get a pref:
getPref("myKey", getApplicationContext());
Or you can use this object https://github.com/kcochibili/TinyDB--Android-Shared-Preferences-Turbo which simplifies everything even further
Example:
TinyDB tinydb = new TinyDB(context);
tinydb.putInt("clickCount", 2);
tinydb.putFloat("xPoint", 3.6f);
tinydb.putLong("userCount", 39832L);
tinydb.putString("userName", "john");
tinydb.putBoolean("isUserMale", true);
tinydb.putList("MyUsers", mUsersArray);
tinydb.putImagePNG("DropBox/WorkImages", "MeAtlunch.png", lunchBitmap);
SELECT (cast(timestamp_1 as bigint) - cast(timestamp_2 as bigint)) FROM table;
In case if someone is having an issue using extract.
You want to get the computed width. Try: .offsetWidth
(I.e: this.offsetWidth='50px'
or var w=this.offsetWidth
)
You might also like this answer on SO.
i have just discovered, android studio 3.0.1 has no sdk during the installation. because during the installation, it doesn't give sdk as part of install able unlike in recent versions of android studio.
(Just leaving this here for my own reference.) This will show version and build for the "version" and "build" fields you see in an Xcode target:
- (NSString*) version {
NSString *version = [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleShortVersionString"];
NSString *build = [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleVersion"];
return [NSString stringWithFormat:@"%@ build %@", version, build];
}
In Swift
func version() -> String {
let dictionary = NSBundle.mainBundle().infoDictionary!
let version = dictionary["CFBundleShortVersionString"] as? String
let build = dictionary["CFBundleVersion"] as? String
return "\(version) build \(build)"
}
checkip.dyndns.org is not always works correctly. For example, for my machine it shows internal after-NAT address:
Current IP Address: 192.168.1.120
I think its happening, because of I have my local DNS-zone behind NAT, and my browser sends to checkip its local IP address, which is returned back.
Also, http is heavy weight and text oriented TCP-based protocol, so not very suitable for quick and efficient regular request for external IP address. I suggest to use UDP-based, binary STUN, especially designed for this purposes:
http://en.wikipedia.org/wiki/STUN
STUN-server is like "UDP mirror". You looking to it, and see "how I looks".
There is many public STUN-servers over the world, where you can request your external IP. For example, see here:
http://www.voip-info.org/wiki/view/STUN
You can download any STUN-client library, from Internet, for example, here:
http://www.codeproject.com/Articles/18492/STUN-Client
And use it.
Here's one way in XSLT 2
<?xml version="1.0" encoding="UTF-8"?> <xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"> <xsl:template match="@*|node()"> <xsl:copy> <xsl:apply-templates select="@*|node()"/> </xsl:copy> </xsl:template> <xsl:template match="text()"> <xsl:value-of select="translate(.,'"','''')"/> </xsl:template> </xsl:stylesheet>
Doing it in XSLT1 is a little more problematic as it's hard to get a literal containing a single apostrophe, so you have to resort to a variable:
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"> <xsl:template match="@*|node()"> <xsl:copy> <xsl:apply-templates select="@*|node()"/> </xsl:copy> </xsl:template> <xsl:variable name="apos">'</xsl:variable> <xsl:template match="text()"> <xsl:value-of select="translate(.,'"',$apos)"/> </xsl:template> </xsl:stylesheet>
Just came across the same problem on a freshly installed CentOS 6.4 64-bit machine. A single yum command will fix this plus 99% of similar problems:
yum groupinstall "Compatibility libraries"
Either prefix this with 'sudo' or run as root, whichever works best for you.
Try this in input field:
[readonly]="true"
Hope, this will work.
this.$http.get('https://pokeapi.co/api/v2/pokemon')
.then(response => {
if(response.status === 200)
{
this.usuarios = response.data.results.map(usuario => {
return { name: usuario.name, url: usuario.url, captched: false } })
}
})
.catch( error => { console.log("Error al Cargar los Datos: " + error ) } )
Probably something like this if it's the text part you want...
from xml.dom.minidom import parse
dom = parse("C:\\eve.xml")
name = dom.getElementsByTagName('name')
print " ".join(t.nodeValue for t in name[0].childNodes if t.nodeType == t.TEXT_NODE)
The text part of a node is considered a node in itself placed as a child-node of the one you asked for. Thus you will want to go through all its children and find all child nodes that are text nodes. A node can have several text nodes; eg.
<name>
blabla
<somestuff>asdf</somestuff>
znylpx
</name>
You want both 'blabla' and 'znylpx'; hence the " ".join(). You might want to replace the space with a newline or so, or perhaps by nothing.
The accepted answer works perfectly fine. I just want to mention a minor problem with the answer devXen has given.
If you set the icon like this:
<link rel="shortcut icon" type="image/x-icon" href="icon.ico">
The icon will work as expected:
However, if you set it like devXen has suggested:
<title> Amir A. Shabani</title>
The title of the page moves upon refresh:
So I would advise using <link>
instead.
<ComboBox Text="Something">
<ComboBoxItem Content="Item1"></ComboBoxItem >
<ComboBoxItem Content="Item2"></ComboBoxItem >
<ComboBoxItem Content="Item3"></ComboBoxItem >
</ComboBox>
According to caniuse.com:
You can use a client-only polyfill to extend support of SSE to many other browsers. This is less likely with WebSockets. Some EventSource polyfills:
If you need to support all the browsers, consider using a library like web-socket-js, SignalR or socket.io which support multiple transports such as WebSockets, SSE, Forever Frame and AJAX long polling. These often require modifications to the server side as well.
Learn more about SSE from:
Learn more about WebSockets from:
Other differences:
You can't select pseudo elements in jQuery because they are not part of DOM. But you can add an specific class to the father element and control its pseudo elements in CSS.
In jQuery:
<script type="text/javascript">
$('span').addClass('change');
</script>
In CSS:
span.change:after { content: 'bar' }
ok, so my problem was that I tried to install the package with yum which is the primary tool for getting, installing, deleting, querying, and managing Red Hat Enterprise Linux RPM software packages from official Red Hat software repositories, as well as other third-party repositories.
But I'm using ubuntu and The usual way to install packages on the command line in Ubuntu is with apt-get. so the right command was:
sudo apt-get install libstdc++.i686
First off, BigDecimal.multiply()
returns a BigDecimal
and you're trying to store that in an int
.
Second, it takes another BigDecimal
as the argument, not an int
.
If you just use the BigDecimal
for all variables involved in these calculations, it should work fine.
it went OK when i used Locale.US
parametre in SimpleDateFormat
String dateString = "15 May 2013 17:38:34 +0300";
System.out.println(dateString);
SimpleDateFormat dateFormat = new SimpleDateFormat("dd MMM yyyy HH:mm:ss Z", Locale.US);
DateFormat targetFormat = new SimpleDateFormat("dd MMM yyyy HH:mm", Locale.getDefault());
String formattedDate = null;
Date convertedDate = new Date();
try {
convertedDate = dateFormat.parse(dateString);
System.out.println(dateString);
formattedDate = targetFormat.format(convertedDate);
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println(convertedDate);
I have had the unfortunate task of testing threaded code and they are definitely the hardest tests I have ever written.
When writing my tests, I used a combination of delegates and events. Basically it is all about using PropertyNotifyChanged
events with a WaitCallback
or some kind of ConditionalWaiter
that polls.
I am not sure if this was the best approach, but it has worked out for me.
Reading the file is easier done with the static File
class:
// First read all the text into a single string.
string text = File.ReadAllText(FileName);
// Then split the lines at "\r\n".
string[] stringSeparators = new string[] { "\r\n" };
string[] lines = text.Split(stringSeparators, StringSplitOptions.None);
// Finally replace lonely '\r' and '\n' by whitespaces in each line.
foreach (string s in lines) {
Console.WriteLine(s.Replace('\r', ' ').Replace('\n', ' '));
}
Note: The text might also contain vertical tabulators \v
. Those are used by Microsoft Word as manual linebreaks.
In order to catch any possible kind of breaks, you could use regex for the replacement
Console.WriteLine(Regex.Replace(s, @"[\f\n\r\t\v]", " "));
To replace a path within files (avoiding escape characters) you may use the following command:
sed -i 's@old_path@new_path@g'
The @ sign means that all of the special characters should be ignored in a following string.
static - When the JVM makes a call to the main method there is no object that exists for the class being called therefore it has to have static method to allow invocation from class.
If you are working with heavy queries, you better move the request for the latest row in the where clause. It is a lot faster and looks cleaner.
SELECT c.*,
FROM client AS c
LEFT JOIN client_calling_history AS cch ON cch.client_id = c.client_id
WHERE
cch.cchid = (
SELECT MAX(cchid)
FROM client_calling_history
WHERE client_id = c.client_id AND cal_event_id = c.cal_event_id
)
int w =0 , l =0, d=0, i=0;
Scanner sc = new Scanner(System.in);
// try tentimes
while (i<10) {
System.out.println("scissor(1) ,Rock(2),Paper(3) ");
int n = sc.nextInt();
int m =(int)(Math.random()*3+1);
if(n==m){
System.out.println("Com:"+m +"so>>> " + "draw");
d++;
}else if ((n-1)%3==(m%3)){
w++;
System.out.println("Com:"+m +"so>>> " +"win");
}
else if(n >=4 )
{
System.out.println("pleas enter correct number)");
}
else {
System.out.println("Com:"+m +"so>>> " +"lose");
l++;
}
i++;
you need to mark your directory as source root (right click on the parent directory)
and then compile the plugin (it is important )
as result you will be able to add classes and more
One other option which is arguably more intuitive is:
SELECT [name]
FROM sys.columns
WHERE object_id = OBJECT_ID('[yourSchemaType].[yourTableName]')
This gives you all your column names in a single column.
If you care about other metadata, you can change edit the SELECT STATEMENT TO SELECT *
.
// UITableViewCell set Identify "Cell"
// UITableView Name is tableReport
UIViewController,UITableViewDelegate,UITableViewDataSource,UINavigationControllerDelegate, UIImagePickerControllerDelegate {
@IBOutlet weak var tableReport: UITableView!
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 5;
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableReport.dequeueReusableCell(withIdentifier: "Cell", for: indexPath)
cell.textLabel?.text = "Report Name"
return cell;
}
}
In case you happen to be using Spring framework along with java, there is an easy way around.
Import the following.
import org.springframework.util.Base64Utils;
Convert like this.
byte[] bytearr ={0,1,2,3,4}; String encodedText = Base64Utils.encodeToString(bytearr);
To decode you can use the decodeToString method of the Base64Utils class.
You can use the PEAR mailer, which has the same interface, but returns a PEAR_Error when there is problems.
Two different kinds of parameters can be adjusted during the training of an ANN, the weights and the value in the activation functions. This is impractical and it would be easier if only one of the parameters should be adjusted. To cope with this problem a bias neuron is invented. The bias neuron lies in one layer, is connected to all the neurons in the next layer, but none in the previous layer and it always emits 1. Since the bias neuron emits 1 the weights, connected to the bias neuron, are added directly to the combined sum of the other weights (equation 2.1), just like the t value in the activation functions.1
The reason it's impractical is because you're simultaneously adjusting the weight and the value, so any change to the weight can neutralize the change to the value that was useful for a previous data instance... adding a bias neuron without a changing value allows you to control the behavior of the layer.
Furthermore the bias allows you to use a single neural net to represent similar cases. Consider the AND boolean function represented by the following neural network:
(source: aihorizon.com)
A single perceptron can be used to represent many boolean functions.
For example, if we assume boolean values of 1 (true) and -1 (false), then one way to use a two-input perceptron to implement the AND function is to set the weights w0 = -3, and w1 = w2 = .5. This perceptron can be made to represent the OR function instead by altering the threshold to w0 = -.3. In fact, AND and OR can be viewed as special cases of m-of-n functions: that is, functions where at least m of the n inputs to the perceptron must be true. The OR function corresponds to m = 1 and the AND function to m = n. Any m-of-n function is easily represented using a perceptron by setting all input weights to the same value (e.g., 0.5) and then setting the threshold w0 accordingly.
Perceptrons can represent all of the primitive boolean functions AND, OR, NAND ( 1 AND), and NOR ( 1 OR). Machine Learning- Tom Mitchell)
The threshold is the bias and w0 is the weight associated with the bias/threshold neuron.
Here's a CSS-only alternative. I set this up for a search field to get an effect similar to Firefox (& a hundred other apps.)
HTML
<div class="col-md-4">
<input class="form-control" type="search" />
<span class="glyphicon glyphicon-search"></span>
</div>
CSS
.form-control {
padding-right: 30px;
}
.form-control + .glyphicon {
position: absolute;
right: 0;
padding: 8px 27px;
}
You need to do it directly on a server. But a better way is using PHP. I have heard that PHP has a special code that can send e-mail directly without opening the mail client.
function loadpage (page_request, containerid)
{
var loading = document.getElementById ( "loading" ) ;
// when connecting to server
if ( page_request.readyState == 1 )
loading.style.visibility = "visible" ;
// when loaded successfully
if (page_request.readyState == 4 && (page_request.status==200 || window.location.href.indexOf("http")==-1))
{
document.getElementById(containerid).innerHTML=page_request.responseText ;
loading.style.visibility = "hidden" ;
}
}
you can use $.param to assign data :
$http({
url: "http://example.appspot.com/rest/app",
method: "POST",
data: $.param({"foo":"bar"})
}).success(function(data, status, headers, config) {
$scope.data = data;
}).error(function(data, status, headers, config) {
$scope.status = status;
});
look at this : AngularJS + ASP.NET Web API Cross-Domain Issue
You can use HttpPost, there are methods to add Header to the Request.
DefaultHttpClient httpclient = new DefaultHttpClient();
String url = "http://localhost";
HttpPost httpPost = new HttpPost(url);
httpPost.addHeader("header-name" , "header-value");
HttpResponse response = httpclient.execute(httpPost);
You may simply use this query
alter table abc auto_increment = 1;
In this scenario col BETWEEN ... AND ...
and col <= ... and col >= ...
are equivalent.
SQL Standard defines also T461 Symmetric BETWEEN predicate:
<between predicate part 2> ::= [ NOT ] BETWEEN [ ASYMMETRIC | SYMMETRIC ] <row value predicand> AND <row value predicand>
Transact-SQL does not support this feature.
BETWEEN
requires that values are sorted. For instance:
SELECT 1 WHERE 3 BETWEEN 10 AND 1
-- no rows
<=>
SELECT 1 WHERE 3 >= 10 AND 3 <= 1
-- no rows
On the other hand:
SELECT 1 WHERE 3 BETWEEN SYMMETRIC 1 AND 10;
-- 1
SELECT 1 WHERE 3 BETWEEN SYMMETRIC 10 AND 1
-- 1
It works exactly as the normal BETWEEN
but after sorting the comparison values.
From a file:
import re
sep = '...'
with open("requirements.txt") as file_in:
lines = []
for line in file_in:
res = line.split(sep, 1)[0]
print(res)
Check the mozilla documentation on window.open. The window features ("directory=...,...,height=350") etc. arguments should be a string:
window.open('/pageaddress.html','winname',"directories=0,titlebar=0,toolbar=0,location=0,status=0,menubar=0,scrollbars=no,resizable=no,width=400,height=350");
Try if that works in your browsers. Note that some of the features might be overridden by user preferences, such as "location" (see doc.)
You can use this simple command to achieve the result:
echo "{ \"foo\": \"lorem\", \"bar\": \"ipsum\" }"|python -m json.tool
Managed to get answer after do some google..
echo "deb http://ppa.launchpad.net/webupd8team/java/ubuntu precise main" | tee -a /etc/apt/sources.list
echo "deb-src http://ppa.launchpad.net/webupd8team/java/ubuntu precise main" | tee -a /etc/apt/sources.list
apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys EEA14886
apt-get update
# Java 7
apt-get install oracle-java7-installer
# For Java 8 command is:
apt-get install oracle-java8-installer
I change the line "pod 'Alamofire', '~> 4.0'" to "pod 'Alamofire', :git => 'https://github.com/Alamofire/Alamofire', :commit => '3cc5b4e'" after that in terminal: "pod install --repo-update" and it works.
So do it the old fashioned way and roll your own:
Map<String, Integer> instances = new HashMap<String, Integer>();
void add(String name) {
Integer value = instances.get(name);
if (value == null) {
value = new Integer(0);
instances.put(name, value);
}
instances.put(name, value++);
}
I had the same problem;
textStatus = 'error'
errorThrown = (empty)
xhr.status = 0
That fits my problem exactly. It turns out that when I was loading the HTML-page from my own computer this problem existed, but when I loaded the HTML-page from my webserver it went alright. Then I tried to upload it to another domain, and again the same error occoured. Seems to be a cross-domain problem. (in my case at least)
I have tried calling it this way also:
var request = $.ajax({
url: "http://crossdomain.url.net/somefile.php", dataType: "text",
crossDomain: true,
xhrFields: {
withCredentials: true
}
});
but without success.
This post solved it for me: jQuery AJAX cross domain
table {
border-collapse: collapse;
}
Because the statement defining obj
hasn't finished, key1
doesn't exist yet. Consider this solution:
var obj = { key1: "it" };
obj.key2 = obj.key1 + ' ' + 'works!';
// obj.key2 is now 'it works!'
None of the answers worked for me. This is what worked Assuming you have anaconda python 3.7 installed
1) Dowload and install cmake(make sure to check the option to add cmake to system path during installation to avoid manually doing later) Download from this link cmake download
2) conda install -c conda-forge dlib
for using Cron Job, below is the php function
public function runback() {
$filename = '/var/www/html/local/storage/stores/database_backup_' . date("Y-m-d-H-i-s") . '.sql';
/*
* db backup
*/
$command = "mysqldump --single-transaction -h $dbhost -u$dbuser -p$dbpass yourdb_name > $filename";
system($command);
if ($command == '') {
/* no output is good */
echo 'not done';
} else {
/* we have something to log the output here */
echo 'done';
}
}
There should not be any space between -u and username also no space between -p and password. CRON JOB command to run this script every sunday 8.30 am:
>> crontab -e
30 8 * * 7 curl -k https://www.websitename.com/takebackup
In Python you can iterate over the list
itself:
for item in my_list:
#do something with item
or to use indices you can use xrange()
:
for i in xrange(1,len(my_list)): #as indexes start at zero so you
#may have to use xrange(len(my_list))
#do something here my_list[i]
There's another built-in function called enumerate()
, which returns both item and index:
for index,item in enumerate(my_list):
# do something here
examples:
In [117]: my_lis=list('foobar')
In [118]: my_lis
Out[118]: ['f', 'o', 'o', 'b', 'a', 'r']
In [119]: for item in my_lis:
print item
.....:
f
o
o
b
a
r
In [120]: for i in xrange(len(my_lis)):
print my_lis[i]
.....:
f
o
o
b
a
r
In [122]: for index,item in enumerate(my_lis):
print index,'-->',item
.....:
0 --> f
1 --> o
2 --> o
3 --> b
4 --> a
5 --> r
It is worth knowing that if you run out of usable disc space on your server partition or drive, that this will also cause MySQL to return this error. If you're sure it's not the actual number of users connected then the next step is to check that you have free space on your MySQL server drive/partition.
Edit January 2019:
This is true of MySQL 5.7 and 5.8 . I do not know for versions above this.
Global tools can be installed in the default directory or in a specific location. The default directories are:
Linux/macOS ---> $HOME/.dotnet/tools
Windows ---> %USERPROFILE%\.dotnet\tools
If you're trying to run a global tool, check that the PATH environment variable on your machine contains the path where you installed the global tool and that the executable is in that path.
A simple modification of the accepted answer that returns a new list instead of working in-place, and accepts the more general IEnumerable<T>
as many other Linq methods do.
private static Random rng = new Random();
/// <summary>
/// Returns a new list where the elements are randomly shuffled.
/// Based on the Fisher-Yates shuffle, which has O(n) complexity.
/// </summary>
public static IEnumerable<T> Shuffle<T>(this IEnumerable<T> list) {
var source = list.ToList();
int n = source.Count;
var shuffled = new List<T>(n);
shuffled.AddRange(source);
while (n > 1) {
n--;
int k = rng.Next(n + 1);
T value = shuffled[k];
shuffled[k] = shuffled[n];
shuffled[n] = value;
}
return shuffled;
}
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;
}
The <f:viewParam>
manages the setting, conversion and validation of GET parameters. It's like the <h:inputText>
, but then for GET parameters.
The following example
<f:metadata>
<f:viewParam name="id" value="#{bean.id}" />
</f:metadata>
does basically the following:
id
.required
, validator
and converter
attributes and nest a <f:converter>
and <f:validator>
in it like as with <h:inputText>
)#{bean.id}
value, or if the value
attribute is absent, then set it as request attribtue on name id
so that it's available by #{id}
in the view.So when you open the page as foo.xhtml?id=10
then the parameter value 10
get set in the bean this way, right before the view is rendered.
As to validation, the following example sets the param to required="true"
and allows only values between 10 and 20. Any validation failure will result in a message being displayed.
<f:metadata>
<f:viewParam id="id" name="id" value="#{bean.id}" required="true">
<f:validateLongRange minimum="10" maximum="20" />
</f:viewParam>
</f:metadata>
<h:message for="id" />
You can use the <f:viewAction>
for this.
<f:metadata>
<f:viewParam id="id" name="id" value="#{bean.id}" required="true">
<f:validateLongRange minimum="10" maximum="20" />
</f:viewParam>
<f:viewAction action="#{bean.onload}" />
</f:metadata>
<h:message for="id" />
with
public void onload() {
// ...
}
The <f:viewAction>
is however new since JSF 2.2 (the <f:viewParam>
already exists since JSF 2.0). If you can't upgrade, then your best bet is using <f:event>
instead.
<f:event type="preRenderView" listener="#{bean.onload}" />
This is however invoked on every request. You need to explicitly check if the request isn't a postback:
public void onload() {
if (!FacesContext.getCurrentInstance().isPostback()) {
// ...
}
}
When you would like to skip "Conversion/Validation failed" cases as well, then do as follows:
public void onload() {
FacesContext facesContext = FacesContext.getCurrentInstance();
if (!facesContext.isPostback() && !facesContext.isValidationFailed()) {
// ...
}
}
Using <f:event>
this way is in essence a workaround/hack, that's exactly why the <f:viewAction>
was introduced in JSF 2.2.
You can "pass-through" the view parameters in navigation links by setting includeViewParams
attribute to true
or by adding includeViewParams=true
request parameter.
<h:link outcome="next" includeViewParams="true">
<!-- Or -->
<h:link outcome="next?includeViewParams=true">
which generates with the above <f:metadata>
example basically the following link
<a href="next.xhtml?id=10">
with the original parameter value.
This approach only requires that next.xhtml
has also a <f:viewParam>
on the very same parameter, otherwise it won't be passed through.
The <f:viewParam>
can also be used in combination with "plain HTML" GET forms.
<f:metadata>
<f:viewParam id="query" name="query" value="#{bean.query}" />
<f:viewAction action="#{bean.search}" />
</f:metadata>
...
<form>
<label for="query">Query</label>
<input type="text" name="query" value="#{empty bean.query ? param.query : bean.query}" />
<input type="submit" value="Search" />
<h:message for="query" />
</form>
...
<h:dataTable value="#{bean.results}" var="result" rendered="#{not empty bean.results}">
...
</h:dataTable>
With basically this @RequestScoped
bean:
private String query;
private List<Result> results;
public void search() {
results = service.search(query);
}
Note that the <h:message>
is for the <f:viewParam>
, not the plain HTML <input type="text">
! Also note that the input value displays #{param.query}
when #{bean.query}
is empty, because the submitted value would otherwise not show up at all when there's a validation or conversion error. Please note that this construct is invalid for JSF input components (it is doing that "under the covers" already).
Use Google Guava:
Maven:
<dependency>
<artifactId>guava</artifactId>
<groupId>com.google.guava</groupId>
<version>14.0.1</version>
</dependency>
Sample code:
Strings.padStart("129018", 10, '0') returns "0000129018"
Since unpaidMembers
is a dictionary it always returns two values when called with .items()
- (key, value). You may want to keep your data as a list of tuples [(name, email, lastname), (name, email, lastname)..]
.
(something else)
should be a.Country
if Country
is nullable then make(something else)
be a.Country OR a.Country is NULL
here is a method to point
sh -> bash
run this command on terminal
sudo dpkg-reconfigure dash
After this you should see
ls -l /bin/sh
point to /bin/bash (and not to /bin/dash)
$.ajax({
type: "POST",
url: hb_base_url + "consumer",
contentType: "application/json",
dataType: "json",
data: {
data__value = JSON.stringify(
{
first_name: $("#namec").val(),
last_name: $("#surnamec").val(),
email: $("#emailc").val(),
mobile: $("#numberc").val(),
password: $("#passwordc").val()
})
},
success: function(response) {
console.log(response);
},
error: function(response) {
console.log(response);
}
});
(RU) ?? ??????? ???? ?????? ????? ???????? ??? - $_POST['data__value']; ???????? ??? ????????? ???????? first_name ?? ???????, ????? ????????:
(EN) On the server, you can get your data as - $_POST ['data__value']; For example, to get the first_name value on the server, write:
$test = json_decode( $_POST['data__value'] );
echo $test->first_name;
You can try the simple one
select to_date('2020-07-08T15:30:42Z','yyyy-mm-dd"T"hh24:mi:ss"Z"') from dual;
Also the more concise way is to use their selectors engine. So to disable all form elements in a div or form parent.
$myForm.find(':input:not(:disabled)').prop('disabled',true)
I had the same problem with Eclipse 3.4(Ganymede) and dynamic web project.
The message didn't influence successfull deploy.But I had to delete row
<wb-resource deploy-path="/WEB-INF/classes" source-path="/src/main/resources"/>
from org.eclipse.wst.common.component file in .settings folder of Eclipse
Use empty()
to check if it is available. Try with -
will generate the error if host is not present here
if(!empty($_GET["host"]))
if($_GET["host"]!="")
All you have to do is have a height of 100vh on your main container/wrapper, and then set height 100% or 50% for child elements.. depending on what you're trying to achieve. I tried to copy your mock up in a basic sense.
In case you want to center stuff within, look into flexbox. I put in an example for you.
You can view it on full screen, and resize the browser and see how it works. The layout stays the same.
.left {_x000D_
background: grey; _x000D_
}_x000D_
_x000D_
.right {_x000D_
background: black; _x000D_
}_x000D_
_x000D_
.main-wrapper {_x000D_
height: 100vh; _x000D_
}_x000D_
_x000D_
.section {_x000D_
height: 100%; _x000D_
display: flex;_x000D_
flex-direction: column;_x000D_
justify-content: center;_x000D_
align-items: center;_x000D_
}_x000D_
_x000D_
.half {_x000D_
background: #f9f9f9;_x000D_
height: 50%; _x000D_
width: 100%;_x000D_
margin: 15px 0;_x000D_
}_x000D_
_x000D_
h4 {_x000D_
color: white; _x000D_
}
_x000D_
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">_x000D_
_x000D_
<div class="main-wrapper">_x000D_
<div class="section left col-xs-3">_x000D_
<div class="half"><h4>Top left</h4></div>_x000D_
<div class="half"><h4>Bottom left</h4></div>_x000D_
</div>_x000D_
<div class="section right col-xs-9">_x000D_
<h4>Extra step: center stuff here</h4>_x000D_
</div>_x000D_
</div>
_x000D_