System wide C++ change on Ubuntu:
sudo apt-get install clang
sudo update-alternatives --config c++
Will print something like this:
Selection Path Priority Status
------------------------------------------------------------
* 0 /usr/bin/g++ 20 auto mode
1 /usr/bin/clang++ 10 manual mode
2 /usr/bin/g++ 20 manual mode
Then just select clang++.
The most useful thing you can do here is display/i $pc
, before using stepi
as already suggested in R Samuel Klatchko's answer. This tells gdb to disassemble the current instruction just before printing the prompt each time; then you can just keep hitting Enter to repeat the stepi
command.
(See my answer to another question for more detail - the context of that question was different, but the principle is the same.)
You can also look at filever.exe, which can be downloaded as part of the Windows XP SP2 Support Tools package - only 4.7MB of download.
The easy way to install scipy on Windows 10 100% is this: Just pip this ====>
pip install scipy==1.0.0rc2
Thank me later :)
I Encounter this problem before. I suspect that is some of ur cells are link towards other sheet, which the other sheets is returning #NAME? which ends up the current sheets is not working on calculation.
Try solve ur other sheets that is linked
The name of the inputs must be the same to belong to the same group. Then the others will be automatically deselected when one is clicked.
To replace the old version with the new one, you need to change the link for it. Type that command to terminal.
brew link --force openssl
Check the version of openssl again. It should be changed.
I got this issue when i wrote :
export default connect (mapDispatchToProps,mapStateToProps)(SearchInsectsComponent);
instead of
export default connect (mapStateToProps,mapDispatchToProps)(SearchInsectsComponent);
I like to use a TreeWalker if the set of elements are children of a root node.
By the sound of it you have a misconfigured device. If you do it will never start and never show anything in Logcat.
I'd recommend creating a new device using one of the default "Device Definitions" available in the AVD Manager. It's as easy as highlighting the device type you want in the "Device Definitions" tab and clicking the "Create AVD..." button, then filling out a few details. I'd start by adjusting "Internal Storage" to around 8GB and (maybe) an "SD Card" of 2GB while leaving everything else the same. Try starting the device and if you see "Android" pop up onscreen you're running. The first boot usually takes awhile so just hang on and watch Logcat for any issues (the "DDMS" perspective helps here).
If you still see a black screen with a default device definition you've got problems elsewhere that are causing the device to fail. Digging through logs may be your only chance if that's the case. You can always try re-downloading the ADT and re-installing the SDKs if nothing else works.
The goal here is to get you up and running with a (very) basic device, so don't shoot for uber impressive specs at this point, just shoot for trying to make it run. Once that happens try adjusting the settings one-by-one until you have it spec'd out the way you like. Just keep in mind that the emulator has its limitations and its no substitute for a real device (Although it works most of the time ;)
@robertklep's answer to check socket.connected is correct except for reconnect event, https://socket.io/docs/client-api/#event-reconnect
As the document said it is "Fired upon a successful reconnection." but when you check socket.connected
then it is false.
Not sure it is a bug or intentional.
Some of the solutions described here did not work for me. Others did, however they produced warnings on runtime and javadoc was still not linked. After some experimenting, I managed to solve this. The steps are:
Install the Google Play Services as recommended on Android Developers.
Set up your project as recommended on Android Developers.
If you followed 1. and 2., you should see two projects in your workspace: your project and google-play-services_lib project. Copy the docs
folder which contains the javadoc from <android-sdk>/extras/google/google_play_services/
to libs
folder of your project.
Copy google-play-services.jar
from <android-sdk>/extras/google/google_play_services/libproject/google-play-services_lib/libs
to 'libs' folder of your project.
In google-play-services_lib
project, edit libs/google-play-services.jar.properties . The <path>
in doc=<path>
should point to the subfolder reference
of the folder docs
, which you created in step 3.
In Eclipse, do Project > Clean. Done, javadoc is now linked.
from datetime import datetime
listA = range(10000000)
setA = set(listA)
tupA = tuple(listA)
#Source Code
def calc(data, type):
start = datetime.now()
if data in type:
print ""
end = datetime.now()
print end-start
calc(9999, listA)
calc(9999, tupA)
calc(9999, setA)
Output after comparing 10 iterations for all 3 : Comparison
Chances are you need to install .NET 4 (Which will also create a new AppPool for you)
First make sure you have IIS installed then perform the following steps:
cmd
and press ENTERcd C:\Windows\Microsoft.NET\Framework\v4.0.30319\
and press ENTER.aspnet_regiis.exe -ir
and press ENTER again.
-i
instead of -ir
. This will change their AppPools for you and steps 5-on shouldn't be necessary.(You can repeat steps 7-on for every site you want to apply .NET 4 on as well).
Additional References:
-ir
or -i
does (or the difference between them) or what other options are available. (I typically use -ir
to prevent any older sites currently running from breaking on a framework change but that's up to you.)None of the answers work for all output types the same way and others focus on figures plottet within the code chunk and not external images.
The include_graphics()
function provides an easy solution. The only argument is the name of the file (with the relative path if it's in a subfolder). By setting echo
to FALSE
and fig.align=center
you get the wished result.
```{r, echo=FALSE, fig.align='center'}
include_graphics("image.jpg")
```
According to http://www.w3schools.com/css/css_align.asp, setting the left and right margins to auto specifies that they should split the available margin equally. The result is a centered element:
margin-left: auto;margin-right: auto;
You could wrap your return value in the Boolean function
Boolean([return value])
That'll ensure all falsey values are false and truthy statements are true.
I would do as follows;
var num = 10,_x000D_
dynar = [...Array(num)].map((_,i) => ++i+"");_x000D_
console.log(dynar);
_x000D_
All of the replies with readonly
are only suitable when this is a pure TS environment - if it's ever being made into a library then this doesn't actually prevent anything, it just provides warnings for the TS compiler itself.
Static is also not correct - that's adding a method to the Class, not to an instance of the class - so you need to address it directly.
There are several ways to manage this, but the pure TS way is to use a getter
- exactly as you have done already.
The alternative way is to put it in as readonly
, but then use Object.defineProperty
to lock it - this is almost the same thing that is being done via the getter, but you can lock it to have a value, rather than a method to use to get it -
class MyClass {
MY_CONSTANT = 10;
constructor() {
Object.defineProperty(this, "MY_CONSTANT", {value: this.MY_CONSTANT});
}
}
The defaults make it read-only, but check out the docs for more details.
It is purely a string:
startInfo.Arguments = "-sk server -sky exchange -pe -n CN=localhost -ir LocalMachine -is Root -ic MyCA.cer -sr LocalMachine -ss My MyAdHocTestCert.cer"
Of course, when arguments contain whitespaces you'll have to escape them using \" \", like:
"... -ss \"My MyAdHocTestCert.cer\""
See MSDN for this.
Here is a table that is not a SELECT * FROM
SHOW TABLES FROM `db` LIKE 'tablename'; //zero rows = not exist
Got this from a database pro, here is what I was told:
select 1 from `tablename`; //avoids a function call
select * from INFORMATION_SCHEMA.tables where schema = 'db' and table = 'table' // slow. Field names not accurate
SHOW TABLES FROM `db` LIKE 'tablename'; //zero rows = does not exist
Just use a where clause that won't select any rows:
create table xyz_new as select * from xyz where 1=0;
The following things will not be copied to the new table:
This also does not handle partitions
You could write a directive for this, which simply assigns the (jqLite) element to the scope using an attribute-given name.
Here is the directive:
app.directive("ngScopeElement", function () {
var directiveDefinitionObject = {
restrict: "A",
compile: function compile(tElement, tAttrs, transclude) {
return {
pre: function preLink(scope, iElement, iAttrs, controller) {
scope[iAttrs.ngScopeElement] = iElement;
}
};
}
};
return directiveDefinitionObject;
});
Usage:
app.directive("myDirective", function() {
return {
template: '<div><ul ng-scope-element="list"><li ng-repeat="item in items"></ul></div>',
link: function(scope, element, attrs) {
scope.list[0] // scope.list is the jqlite element,
// scope.list[0] is the native dom element
}
}
});
Some remarks:
scope.list
from myDirective
s postLink-Function, which you are very likely using anywayngScopeElement
uses a preLink-function, so that directives nested within the element having ng-scope-element
can already access scope.list
One way is to use pcntl_fork()
in a recursive function.
function networkCall(){
$data = processGETandPOST();
$response = makeNetworkCall($data);
processNetworkResponse($response);
return true;
}
function runAsync($times){
$pid = pcntl_fork();
if ($pid == -1) {
die('could not fork');
} else if ($pid) {
// we are the parent
$times -= 1;
if($times>0)
runAsync($times);
pcntl_wait($status); //Protect against Zombie children
} else {
// we are the child
networkCall();
posix_kill(getmypid(), SIGKILL);
}
}
runAsync(3);
One thing about pcntl_fork()
is that when running the script by way of Apache, it doesn't work (it's not supported by Apache). So, one way to resolve that issue is to run the script using the php cli, like: exec('php fork.php',$output);
from another file. To do this you'll have two files: one that's loaded by Apache and one that's run with exec()
from inside the file loaded by Apache like this:
apacheLoadedFile.php
exec('php fork.php',$output);
fork.php
function networkCall(){
$data = processGETandPOST();
$response = makeNetworkCall($data);
processNetworkResponse($response);
return true;
}
function runAsync($times){
$pid = pcntl_fork();
if ($pid == -1) {
die('could not fork');
} else if ($pid) {
// we are the parent
$times -= 1;
if($times>0)
runAsync($times);
pcntl_wait($status); //Protect against Zombie children
} else {
// we are the child
networkCall();
posix_kill(getmypid(), SIGKILL);
}
}
runAsync(3);
Simply use JS toLowerCase()
let v = "Your Name"
let u = v.toLowerCase();
or
let u = "Your Name".toLowerCase();
They are two formats of representation of information. While JSON was designed to be more compact, XML was design to be more readable.
Active Directory does not store the group membership on user objects. It only stores the Member list on the group. The tools show the group membership on user objects by doing queries for it.
How about:
(&(objectClass=group)(member=cn=my,ou=full,dc=domain))
(You forgot the (& ) bit in your example in the question as well).
Change database charset and collation
ALTER DATABASE
database_name
CHARACTER SET = utf8mb4
COLLATE = utf8mb4_unicode_ci;
change specific table's charset and collation
ALTER TABLE
table_name
CONVERT TO CHARACTER SET utf8mb4
COLLATE utf8mb4_unicode_ci;
change connection charset in mysql driver
before
charset=utf8&parseTime=True&loc=Local
after
charset=utf8mb4&collation=utf8mb4_unicode_ci&parseTime=True&loc=Local
From this article https://hackernoon.com/today-i-learned-storing-emoji-to-mysql-with-golang-204a093454b7
Typescript and Angular Implementation
directive
((): void=> {
"use strict";
angular.module("app").directive("busyindicator", busyIndicator);
function busyIndicator($http:ng.IHttpService): ng.IDirective {
var directive = <ng.IDirective>{
restrict: "A",
link(scope: Scope.IBusyIndicatorScope) {
scope.anyRequestInProgress = () => ($http.pendingRequests.length > 0);
scope.$watch(scope.anyRequestInProgress, x => {
if (x) {
scope.canShow = true;
} else {
scope.canShow = false;
}
});
}
};
return directive;
}
})();
Scope
module App.Scope {
export interface IBusyIndicatorScope extends angular.IScope {
anyRequestInProgress: any;
canShow: boolean;
}
}
Template
<div id="activityspinner" ng-show="canShow" class="show" data-busyindicator>
</div>
CSS
#activityspinner
{
display : none;
}
#activityspinner.show {
display : block;
position : fixed;
z-index: 100;
background-image : url('data:image/gif;base64,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')
-ms-opacity : 0.4;
opacity : 0.4;
background-repeat : no-repeat;
background-position : center;
left : 0;
bottom : 0;
right : 0;
top : 0;
}
drawInRect
is certainly the way to go. Here's another little thing that will come in way useful when doing this. Usually the picture and the rectangle into which it is going to go don't conform. In that case drawInRect
will stretch the picture. Here's a quick and cool way to make sure that the picture's aspect ration isn't changed, by reversing the transformation (which will be to fit the whole thing in):
//Picture and irect don't conform, so there'll be stretching, compensate
float xf = Picture.size.width/irect.size.width;
float yf = Picture.size.height/irect.size.height;
float m = MIN(xf, yf);
xf /= m;
yf /= m;
CGContextScaleCTM(ctx, xf, yf);
[Picture drawInRect: irect];
function openLinkNewTab (url){
$('body').append('<a id="openLinkNewTab" href="' + url + '" target="_blank"><span></span></a>').find('#openLinkNewTab span').click().remove();
}
Another way of using recursion:
def updateDict(dict1,dict2):
keys1 = list(dict1.keys())
keys2= list(dict2.keys())
keys2 = [x for x in keys2 if x in keys1]
for x in keys2:
if (x in keys1) & (type(dict1[x]) is dict) & (type(dict2[x]) is dict):
updateDict(dict1[x],dict2[x])
else:
dict1.update({x:dict2[x]})
return(dict1)
Another reason of this problem can be column type of "payload" sessions table. If you have huge data on session, a text column wouldn't be enough. You will need MEDIUMTEXT or even LONGTEXT.
7 years later and this code has helped me. However, my times still were not showing up correctly.
Using Matplotlib 2.0.0 and I had to add the following bit of code from Editing the date formatting of x-axis tick labels in matplotlib by Paul H.
import matplotlib.dates as mdates
myFmt = mdates.DateFormatter('%d')
ax.xaxis.set_major_formatter(myFmt)
I changed the format to (%H:%M) and the time displayed correctly.
All thanks to the community.
FormHelper::select(string $fieldName, array $options,
array $attributes)
$attributes['value']
to set which value should be selected default
<?php echo $this->Form->select('status', $list, array(
'empty' => false,
'value' => 1)
); ?>
An optional prefix
!
which negates the pattern; any matching file excluded by a previous pattern will become included again. If a negated pattern matches, this will override lower precedence patterns sources.
http://schacon.github.com/git/gitignore.html
*.json
!spec/*.json
As Hiren stated, you'll need a file explorer to see your directory. If you're rooted I highly suggest root explorer, otherwise ES File Explorer is a good choice.
SetTimeout is used to make your set of code to execute after a specified time period so for your requirements its better to use setInterval because that will call your function every time at a specified time interval.
Very simple, as pictured in the recv.
To check that you will want to read 1 byte from the socket with MSG_PEEK
and MSG_DONT_WAIT
. This will not dequeue data (PEEK
) and the operation is nonblocking (DONT_WAIT
)
while (recv(client->socket,NULL,1, MSG_PEEK | MSG_DONTWAIT) != 0) {
sleep(rand() % 2); // Sleep for a bit to avoid spam
fflush(stdin);
printf("I am alive: %d\n", socket);
}
// When the client has disconnected, this line will execute
printf("Client %d went away :(\n", client->socket);
Found the example here.
/project/tester.py
/project/lib/BoxTime.py
create blank file __init__.py
down the line till you reach the file
/project/lib/somefolder/BoxTime.py
#lib
-- needs has two items one __init__.py
and a directory named somefolder
#somefolder
has two items boxtime.py
and __init__.py
i had a box width code \e094 for glyphicon-arrow-down, in fact i solved the problem adding glyphicon in css class like that :
<i class="glyphicon glyphicon-arrow-down"></i>
if it could help someone ...
Tralemonkey's solution almost worked for me as well ... but not quite. I ended up doing it this way:
echo -n '$#@password@#$' | passwd myusername --stdin
2 key details his solution didn't include, the -n
keeps echo from adding a \n
to the password that is getting encrypted, and the single quotes protect the contents from being interpreted by the shell (bash) in my case.
BTW I ran this command as root on a CentOS 5.6 system in case anyone is wondering.
You should include jquery.fileupload-process.js and jquery.fileupload-validate.js to make it work.
sed -n 's/^potato:[[:space:]]*//p' file.txt
One can think of Grep as a restricted Sed, or of Sed as a generalized Grep. In this case, Sed is one good, lightweight tool that does what you want -- though, of course, there exist several other reasonable ways to do it, too.
To improve the effectiveness of class='ng-cloak' approach when scripts are loaded last, make sure the following css is loaded in the head of the document:
.ng-cloak { display:none; }
"Just to hide" you can:
Change the output type from Console Application to Windows Application,
And Instead of Console.Readline/key
you can use new ManualResetEvent(false).WaitOne()
at the end to keep the app running.
R defines a ~
(tilde) operator for use in formulas. Formulas have all sorts of uses, but perhaps the most common is for regression:
library(datasets)
lm( myFormula, data=iris)
help("~")
or help("formula")
will teach you more.
@Spacedman has covered the basics. Let's discuss how it works.
First, being an operator, note that it is essentially a shortcut to a function (with two arguments):
> `~`(lhs,rhs)
lhs ~ rhs
> lhs ~ rhs
lhs ~ rhs
That can be helpful to know for use in e.g. apply
family commands.
Second, you can manipulate the formula as text:
oldform <- as.character(myFormula) # Get components
myFormula <- as.formula( paste( oldform[2], "Sepal.Length", sep="~" ) )
Third, you can manipulate it as a list:
myFormula[[2]]
myFormula[[3]]
Finally, there are some helpful tricks with formulae (see help("formula")
for more):
myFormula <- Species ~ .
For example, the version above is the same as the original version, since the dot means "all variables not yet used." This looks at the data.frame you use in your eventual model call, sees which variables exist in the data.frame but aren't explicitly mentioned in your formula, and replaces the dot with those missing variables.
There is one rule that is set by font-awesome.css
, which you need to override.
You should set overrides in your CSS files rather than inline, but essentially, the icon-ok class is being set to vertical-align: baseline;
by default and which I've corrected here:
<button id="whatever" class="btn btn-large btn-primary" name="Continue" type="submit">
<span>Continue</span>
<i class="icon-ok" style="font-size:30px; vertical-align: middle;"></i>
</button>
Example here: http://jsfiddle.net/fPXFY/4/ and the output of which is:
I've downsized the font-size of the icon above in this instance to 30px
, as it feels too big at 40px
for the size of the button, but this is purely a personal viewpoint. You could increase the padding on the button to compensate if required:
<button id="whaever" class="btn btn-large btn-primary" style="padding: 20px;" name="Continue" type="submit">
<span>Continue</span>
<i class="icon-ok" style="font-size:30px; vertical-align: middle;"></i>
</button>
Producing: http://jsfiddle.net/fPXFY/5/ the output of which is:
I solved this by overriding the default Content-Type:
const config = { headers: {'Content-Type': 'application/json'} };
axios.put(url, content, config).then(response => {
...
});
Based on m experience, the default Conent-Type is application/x-www-form-urlencoded for strings, and application/json for objects (including arrays). Your server probably expects JSON.
On Vista with virtualization on, the file is here. Note that the AppData folder is hidden. Either show hidden folders, or go straight to it by typing %AppData% in the address bar of Windows Explorer.
C:\Users\[user]\AppData\Roaming\Notepad++\shortcuts.xml
you can use script module
Example
- name: Transfer and execute a script.
hosts: all
tasks:
- name: Copy and Execute the script
script: /home/user/userScript.sh
By default, the query log is disabled in Laravel 5: https://github.com/laravel/framework/commit/e0abfe5c49d225567cb4dfd56df9ef05cc297448
You will need to enable the query log by calling:
DB::enableQueryLog();
// and then you can get query log
dd(DB::getQueryLog());
or register an event listener:
DB::listen(
function ($sql, $bindings, $time) {
// $sql - select * from `ncv_users` where `ncv_users`.`id` = ? limit 1
// $bindings - [5]
// $time(in milliseconds) - 0.38
}
);
If you have more than one DB connection you must specify which connection to log
To enables query log for my_connection
:
DB::connection('my_connection')->enableQueryLog();
To get query log for my_connection
:
print_r(
DB::connection('my_connection')->getQueryLog()
);
class BeforeAnyDbQueryMiddleware
{
public function handle($request, Closure $next)
{
DB::enableQueryLog();
return $next($request);
}
public function terminate($request, $response)
{
// Store or dump the log data...
dd(
DB::getQueryLog()
);
}
}
A middleware's chain will not run for artisan commands, so for CLI execution you can enable query log in the artisan.start
event listener.
For example you can put it in the bootstrap/app.php
file
$app['events']->listen('artisan.start', function(){
\DB::enableQueryLog();
});
Laravel keeps all queries in memory. So in some cases, such as when inserting a large number of rows, or having a long running job with a lot of queries, this can cause the application to use excess memory.
In most cases you will need the query log only for debugging, and if that is the case I would recommend you enable it only for development.
if (App::environment('local')) {
// The environment is local
DB::enableQueryLog();
}
References
Modify your HTML like this:
<table border="0" cellpadding="0" cellspacing="0">
<thead>
<tr><td>1</td><td>2</td><td>3</td></tr>
</thead>
<tbody>
<tr><td>a</td><td>b></td><td>c</td></tr>
<tr class='odd'><td>x</td><td>y</td><td>z</td></tr>
</tbody>
</table>
(I added border="0" cellpadding="0" cellspacing="0"
)
In CSS, you could do the following:
table {
border-collapse: collapse;
}
position: static
, which means the element is not positioned and occurs where it normally would in the document. Normally you wouldn't specify this unless you needed to override a positioning that had been previously set.position: relative
, then you can use top or bottom, and left or right to move the element relative to where it would normally occur in the document.position: absolute
, the element is removed from the document and placed exactly where you tell it to go.So in regard to your question you should position the containing block relative, i.e:
#parent {
position: relative;
}
And the child element you should position absolute to the parent element like this:
#child {
position: absolute;
}
Chain
You can now use the chain
feature in packed
mode as describe in Eugene's answer.
Guideline
You can use a horizontal guideline at 50% position and add bottom and top (8dp) constraints to edittext and button:
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="16dp"
android:paddingRight="16dp">
<android.support.design.widget.TextInputLayout
android:id="@+id/client_id_input_layout"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
app:layout_constraintBottom_toTopOf="@+id/guideline"
android:layout_marginRight="8dp"
app:layout_constraintRight_toRightOf="parent"
android:layout_marginLeft="8dp"
app:layout_constraintLeft_toLeftOf="parent">
<android.support.design.widget.TextInputEditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="@string/login_client_id"
android:inputType="textEmailAddress"/>
</android.support.design.widget.TextInputLayout>
<android.support.v7.widget.AppCompatButton
android:id="@+id/authenticate"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:text="@string/login_auth"
app:layout_constraintTop_toTopOf="@+id/guideline"
android:layout_marginTop="8dp"
android:layout_marginRight="8dp"
app:layout_constraintRight_toRightOf="parent"
android:layout_marginLeft="8dp"
app:layout_constraintLeft_toLeftOf="parent"/>
<android.support.constraint.Guideline
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/guideline"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.5"/>
</android.support.constraint.ConstraintLayout>
df = pd.DataFrame({'movie': ['thg', 'thg', 'mol', 'mol', 'lob', 'lob'],'rating': [3., 4., 5., np.nan, np.nan, np.nan],'name': ['John','James', np.nan, np.nan, np.nan,np.nan]})
for col in df.columns:
df = df[~pd.isnull(df[col])]
Here's what the official naming conventions document prescribes:
Packages
The prefix of a unique package name is always written in all-lowercase ASCII letters and should be one of the top-level domain names, currently
com
,edu
,gov
,mil
,net
,org
, or one of the English two-letter codes identifying countries as specified in ISO Standard 3166, 1981.Subsequent components of the package name vary according to an organization's own internal naming conventions. Such conventions might specify that certain directory name components be division, department, project, machine, or login names.
Examples
com.sun.eng
com.apple.quicktime.v2
edu.cmu.cs.bovik.cheese
Note that in particular, anything following the top-level domain prefix isn't specified by the above document. The JLS also agrees with this by giving the following examples:
com.sun.sunsoft.DOE
gov.whitehouse.socks.mousefinder
com.JavaSoft.jag.Oak
org.npr.pledge.driver
uk.ac.city.rugby.game
The following excerpt is also relevant:
In some cases, the internet domain name may not be a valid package name. Here are some suggested conventions for dealing with these situations:
- If the domain name contains a hyphen, or any other special character not allowed in an identifier, convert it into an underscore.
- If any of the resulting package name components are keywords then append underscore to them.
- If any of the resulting package name components start with a digit, or any other character that is not allowed as an initial character of an identifier, have an underscore prefixed to the component.
This could be caused by a few things (most likely to least likely):
The server's SSL certificate is untrusted by the client. Easiest check is to point a browser at the URL and see if you get an SSL lock icon. If you get a broken lock, icon, click on it to see what the issue is:
Server is requiring Client SSL certificate - in this case you would have to update your code to sign the request with a client certificate.
It's fatal. The remote server has sent you a RST packet, which indicates an immediate dropping of the connection, rather than the usual handshake. This bypasses the normal half-closed state transition. I like this description:
"Connection reset by peer" is the TCP/IP equivalent of slamming the phone back on the hook. It's more polite than merely not replying, leaving one hanging. But it's not the FIN-ACK expected of the truly polite TCP/IP converseur.
SQL 2008
Radim Köhler's answer works, but here is a shorter version:
select top 20 * from
(
select *,
ROW_NUMBER() OVER (ORDER BY columnid) AS ROW_NUM
from tablename
) x
where ROW_NUM>10
If you have a rooted device you can use kill
command
Connect to your device with adb:
adb shell
Once the session is established, you have to escalade privileges:
su
Then
ps
will list running processes. Note down the PID of the process you want to terminate. Then get rid of it
kill PID
That question solved a quite similar question for me and I thought I should share :
In raw python you can use sum()
to count True
values in a list
:
>>> sum([True,True,True,False,False])
3
But this won't work :
>>> sum([[False, False, True], [True, False, True]])
TypeError...
PHP allows default arguments (link). In your case, you could define all the parameters from 3 to 8 as NULL or as an empty string "" depending on your function code. In this way, you can call the function only using the first two parameters.
For example:
<?php
function yourFunction($arg1, $arg2, $arg3=NULL, $arg4=NULL, $arg5=NULL, $arg6=NULL, $arg7=NULL, $arg8=NULL){
echo $arg1;
echo $arg2;
if(isset($arg3)){echo $arg3;}
# other similar statements for $arg4, ...., $arg5
if(isset($arg8)){echo $arg8;}
}
\l - Display database
\c - Connect to database
\dn - List schemas
\dt - List tables inside public schemas
\dt schema1. - List tables inside particular schemas. For eg: 'schema1'.
I got the following for me:
formSubmit('#login-form', '/api/user/login', '/members/');
where
function formSubmit(form, url, target) {
$(form).submit(function(event) {
$.post(url, $(form).serialize())
.done(function(res) {
if (res.success) {
window.location = target;
}
else {
alert(res.error);
}
})
.fail(function(res) {
alert("Server Error: " + res.status + " " + res.statusText);
})
event.preventDefault();
});
}
This assumes the post to 'url' returns an ajax in the form of {success: false, error:'my Error to display'}
You can vary this as you like. Feel free to use that snippet.
If I understand your questions correctly, all you need to do is add the .Where(m => m.r.u.UserId == 1):
var UserInRole = db.UserProfiles.
Join(db.UsersInRoles, u => u.UserId, uir => uir.UserId,
(u, uir) => new { u, uir }).
Join(db.Roles, r => r.uir.RoleId, ro => ro.RoleId, (r, ro) => new { r, ro })
.Where(m => m.r.u.UserId == 1)
.Select (m => new AddUserToRole
{
UserName = m.r.u.UserName,
RoleName = m.ro.RoleName
});
Hope that helps.
If you have a xml like below
<e:Envelope
xmlns:d = "http://www.w3.org/2001/XMLSchema"
xmlns:e = "http://schemas.xmlsoap.org/soap/envelope/"
xmlns:wn0 = "http://systinet.com/xsd/SchemaTypes/"
xmlns:i = "http://www.w3.org/2001/XMLSchema-instance">
<e:Header>
<Friends>
<friend>
<Name>Testabc</Name>
<Age>12121</Age>
<Phone>Testpqr</Phone>
</friend>
</Friends>
</e:Header>
<e:Body>
<n0:ForAnsiHeaderOperResponse xmlns:n0 = "http://systinet.com/wsdl/com/magicsoftware/ibolt/localhost/ForAnsiHeader/ForAnsiHeaderImpl#ForAnsiHeaderOper?KExqYXZhL2xhbmcvU3RyaW5nOylMamF2YS9sYW5nL1N0cmluZzs=">
<response i:type = "d:string">12--abc--pqr</response>
</n0:ForAnsiHeaderOperResponse>
</e:Body>
</e:Envelope>
and wanted to extract the below xml
<e:Header>
<Friends>
<friend>
<Name>Testabc</Name>
<Age>12121</Age>
<Phone>Testpqr</Phone>
</friend>
</Friends>
</e:Header>
The below code helps to achieve the same
public static void main(String[] args) {
File fXmlFile = new File("C://Users//abhijitb//Desktop//Test.xml");
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
Document document;
Node result = null;
try {
document = dbf.newDocumentBuilder().parse(fXmlFile);
XPath xPath = XPathFactory.newInstance().newXPath();
String xpathStr = "//Envelope//Header";
result = (Node) xPath.evaluate(xpathStr, document, XPathConstants.NODE);
System.out.println(nodeToString(result));
} catch (SAXException | IOException | ParserConfigurationException | XPathExpressionException
| TransformerException e) {
e.printStackTrace();
}
}
private static String nodeToString(Node node) throws TransformerException {
StringWriter buf = new StringWriter();
Transformer xform = TransformerFactory.newInstance().newTransformer();
xform.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
xform.transform(new DOMSource(node), new StreamResult(buf));
return (buf.toString());
}
Now if you want only the xml like below
<Friends>
<friend>
<Name>Testabc</Name>
<Age>12121</Age>
<Phone>Testpqr</Phone>
</friend>
</Friends>
You need to change the
String xpathStr = "//Envelope//Header";
to String xpathStr = "//Envelope//Header/*";
If the page you are visiting is index.php, then your url should look like
http://localhost/test/content/home/ OR http://localhost/test/content/home/index.php
not the way you specified - http://localhost/test/content/home
Here is another example of subtracting two dates in C# ...
if ( DateTime.Now.Subtract(Convert.ToDateTime(objDateValueFromDatabase.CreatedOn)).TotalHours > 24 )
{
...
}
Old question, but here's another explanation of the problem. You'll get this error even if you have strongly typed views and aren't using ViewData to create your dropdown list. The reason for the error can becomes clear when you look at the MVC source:
// If we got a null selectList, try to use ViewData to get the list of items.
if (selectList == null)
{
selectList = htmlHelper.GetSelectData(name);
usedViewData = true;
}
So if you have something like:
@Html.DropDownList("MyList", Model.DropDownData, "")
And Model.DropDownData
is null, MVC looks through your ViewData for something named MyList
and throws an error if there's no object in ViewData with that name.
For >= 2nd row values insert into table-
$file = fopen($filename, "r");
//$sql_data = "SELECT * FROM prod_list_1 ";
$count = 0; // add this line
while (($emapData = fgetcsv($file, 10000, ",")) !== FALSE)
{
//print_r($emapData);
//exit();
$count++; // add this line
if($count>1){ // add this line
$sql = "INSERT into prod_list_1(p_bench,p_name,p_price,p_reason) values ('$emapData[0]','$emapData[1]','$emapData[2]','$emapData[3]')";
mysql_query($sql);
} // add this line
}
JAVA_OPTS
is the standard environment variable that some servers and other java apps append to the call that executes the java
command.
For example in tomcat if you define JAVA_OPTS='-Xmx1024m'
, the startup script will execute java org.apache.tomcat.Servert -Xmx1024m
If you are running in Linux/OSX, you can set the JAVA_OPTS, right before you call the startup script by doing
JAVA_OPTS='-Djava.awt.headless=true'
This will only last as long as the console is open. To make it more permanent you can add it to your ~/.profile or ~/.bashrc file.
simply call req.url
. that should do the work. you'll get something like /something?bla=foo
You can easily create a persistent session using:
s = requests.Session()
After that, continue with your requests as you would:
s.post('https://localhost/login.py', login_data)
#logged in! cookies saved for future requests.
r2 = s.get('https://localhost/profile_data.json', ...)
#cookies sent automatically!
#do whatever, s will keep your cookies intact :)
For more about sessions: https://requests.kennethreitz.org/en/master/user/advanced/#session-objects
JOIN t2 ON (t2.id = t1.id AND t2.date = t1.date)
so I am assuming this is kinda out of use now but one way to do it is actually using document.body.style.zoom=2.0;
but if you do this then all of your canvas measurements will have to be divided by the zoom. Also, set the zoom higher for more aliasing. This is helpful because it is adjustable. Also if using this method, I suggest that you make functions to do the same as ctx.fillRect()
etc. but with the zoom taken into account. E.g.
function fillRect(x, y, width, height) {
var zoom = document.body.style.zoom;
ctx.fillRect(x/zoom, y/zoom, width/zoom, height/zoom);
}
Hope this helps!
Also, a sidenote: this can be used to sharpen circle edges as well so that they don't look as blurred. Just use a zoom such as 0.5!
The reason that you get the 404 File Not Found
error, is that your path to CSS given as a value to the href
attribute is missing context path.
An HTTP request URL contains the following parts:
http://[host]:[port][request-path]?[query-string]
The request path is further composed of the following elements:
Context path: A concatenation of a forward slash (/) with the context
root of the servlet's web application. Example: http://host[:port]/context-root[/url-pattern]
Servlet path: The path section that corresponds to the component alias that activated this request. This path starts with a forward slash (/).
Path info: The part of the request path that is not part of the context path or the servlet path.
Read more here.
There are several solutions to your problem, here are some of them:
<c:url>
tag from JSTLIn my Java web applications I usually used <c:url>
tag from JSTL when defining the path to CSS/JavaScript/image and other static resources. By doing so you can be sure that those resources are referenced always relative to the application context (context path).
If you say, that your CSS is located inside WebContent folder, then this should work:
<link type="text/css" rel="stylesheet" href="<c:url value="/globalCSS.css" />" />
The reason why it works is explained in the "JavaServer Pages™ Standard Tag Library" version 1.2 specification chapter 7.5 (emphasis mine):
7.5 <c:url>
Builds a URL with the proper rewriting rules applied.
...
The URL must be either an absolute URL starting with a scheme (e.g. "http:// server/context/page.jsp") or a relative URL as defined by JSP 1.2 in JSP.2.2.1 "Relative URL Specification". As a consequence, an implementation must prepend the context path to a URL that starts with a slash (e.g. "/page2.jsp") so that such URLs can be properly interpreted by a client browser.
NOTE
Don't forget to use Taglib directive in your JSP to be able to reference JSTL tags. Also see an example JSP page here.
An alternative solution is using Expression Language (EL) to add application context:
<link type="text/css" rel="stylesheet" href="${pageContext.request.contextPath}/globalCSS.css" />
Here we have retrieved the context path from the request object. And to access the request object we have used the pageContext implicit object.
<c:set>
tag from JSTLDISCLAIMER
The idea of this solution was taken from here.
To make accessing the context path more compact than in the solution ?2, you can first use the JSTL <c:set>
tag, that sets the value of an EL variable or the property of an EL variable in any of the JSP scopes (page, request, session, or application) for later access.
<c:set var="root" value="${pageContext.request.contextPath}"/>
...
<link type="text/css" rel="stylesheet" href="${root}/globalCSS.css" />
IMPORTANT NOTE
By default, in order to set the variable in such manner, the JSP that contains this set tag must be accessed at least once (including in case of setting the value in the application scope using scope attribute, like <c:set var="foo" value="bar" scope="application" />
), before using this new variable. For instance, you can have several JSP files where you need this variable. So you must ether a) both set the new variable holding context path in the application scope AND access this JSP first, before using this variable in other JSP files, or b) set this context path holding variable in EVERY JSP file, where you need to access to it.
The more effective way to make accessing the context path more compact is to set a variable that will hold the context path and store it in the application scope using a Listener. This solution is similar to solution ?3, but the benefit is that now the variable holding context path is set right at the start of the web application and is available application wide, no need for additional steps.
We need a class that implements ServletContextListener interface. Here is an example of such class:
package com.example.listener;
import javax.servlet.ServletContext;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import javax.servlet.annotation.WebListener;
@WebListener
public class AppContextListener implements ServletContextListener {
@Override
public void contextInitialized(ServletContextEvent event) {
ServletContext sc = event.getServletContext();
sc.setAttribute("ctx", sc.getContextPath());
}
@Override
public void contextDestroyed(ServletContextEvent event) {}
}
Now in a JSP we can access this global variable using EL:
<link type="text/css" rel="stylesheet" href="${ctx}/globalCSS.css" />
NOTE
@WebListener annotation is available since Servlet version 3.0. If you use a servlet container or application server that supports older Servlet specifications, remove the @WebServlet annotation and instead configure the listener in the deployment descriptor (web.xml). Here is an example of web.xml file for the container that supports maximum Servlet version 2.5 (other configurations are omitted for the sake of brevity):
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
version="2.5">
...
<listener>
<listener-class>com.example.listener.AppContextListener</listener-class>
</listener>
...
</webapp>
As suggested by user @gavenkoa you can also use scriptlets like this:
<%= request.getContextPath() %>
For such a small thing it is probably OK, just note that generally the use of scriptlets in JSP is discouraged.
I personally prefer either the first solution (used it in my previous projects most of the time) or the second, as they are most clear, intuitive and unambiguous (IMHO). But you choose whatever suits you most.
You can deploy your web app as the default application (i.e. in the default root context), so it can be accessed without specifying context path. For more info read the "Update" section here.
private void readFile() throws Exception {
AsynchronousFileChannel input=AsynchronousFileChannel.open(Paths.get("E:/dicom_server_storage/abc.txt"),StandardOpenOption.READ);
ByteBuffer buffer=ByteBuffer.allocate(1024);
input.read(buffer,0,null,new CompletionHandler<Integer,Void>(){
@Override public void completed( Integer result, Void attachment){
System.out.println("Done reading the file.");
}
@Override public void failed( Throwable exc, Void attachment){
System.err.println("An error occured:" + exc.getMessage());
}
}
);
System.out.println("This thread keeps on running");
Thread.sleep(100);
}
You cannot concatenate multiple fields with a string. You need to select a field instand of all (*
).
In Layman terms, you need to include external js file in your HTML file & thereafter you could directly call your JS method written in an external js file from HTML page. Follow the code snippet for insight:-
caller.html
<script type="text/javascript" src="external.js"></script>
<input type="button" onclick="letMeCallYou()" value="run external javascript">
external.js
function letMeCallYou()
{
alert("Bazinga!!! you called letMeCallYou")
}
The R-squared is not dependent on the number of variables in the model. The adjusted R-squared is.
The adjusted R-squared adds a penalty for adding variables to the model that are uncorrelated with the variable your trying to explain. You can use it to test if a variable is relevant to the thing your trying to explain.
Adjusted R-squared is R-squared with some divisions added to make it dependent on the number of variables in the model.
I'll add on to mike3875's answer for future readers using Laravel 5.1 and onward.
To make things quicker, you can use the flag "--table" like this:
php artisan make:migration add_paid_to_users --table="users"
This will add the up
and down
method content automatically:
/**
* Run the migrations.
*
* @return void
*/
public function up()
{
Schema::table('users', function (Blueprint $table) {
//
});
}
Similarily, you can use the --create["table_name"]
option when creating new migrations which will add more boilerplate to your migrations. Small point, but helpful when doing loads of them!
Try WebClient.DownloadFileAsync()
. You can call CancelAsync()
by timer with your own timeout.
You need to look at the explain plans, but unless there is an INDEX or PARTITION on COL_A, you are looking at a FULL TABLE SCAN on both tables.
With that in mind, your first example is throwing out some of the data as it does the FULL TABLE SCAN. That result is being sorted by the UNION, then duplicate data is dropped. This gives you your result set.
In the second example, you are pulling the full contents of both tables. That result is likely to be larger. So the UNION is sorting more data, then dropping the duplicate stuff. Then the filter is being applied to give you the result set you are after.
As a general rule, the earlier you filter away data, the smaller the data set, and the faster you will get your results. As always, your milage may vary.
How about this?
SELECT Value, ReadTime, ReadDate
FROM YOURTABLE
WHERE CAST(ReadDate AS DATETIME) + ReadTime BETWEEN '2010-09-16 17:00:00' AND '2010-09-21 09:00:00'
EDIT: output according to OP's wishes ;-)
the pom.xml for the project I have doesn't have this "http://repo1.maven.org/myurlhere" anywhere in it
All projects have http://repo1.maven.org/ declared as <repository>
(and <pluginRepository>
) by default. This repository, which is called the central repository, is inherited like others default settings from the "Super POM" (all projects inherit from the Super POM). So a POM is actually a combination of the Super POM, any parent POMs and the current POM. This combination is called the "effective POM" and can be printed using the effective-pom
goal of the Maven Help plugin (useful for debugging).
And indeed, if you run:
mvn help:effective-pom
You'll see at least the following:
<repositories>
<repository>
<snapshots>
<enabled>false</enabled>
</snapshots>
<id>central</id>
<name>Maven Repository Switchboard</name>
<url>http://repo1.maven.org/maven2</url>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<releases>
<updatePolicy>never</updatePolicy>
</releases>
<snapshots>
<enabled>false</enabled>
</snapshots>
<id>central</id>
<name>Maven Plugin Repository</name>
<url>http://repo1.maven.org/maven2</url>
</pluginRepository>
</pluginRepositories>
it has the absolute url where the maven repo is for the project but maven is still trying to download from the general maven repo
Maven will try to find dependencies in all repositories declared, including in the central one which is there by default as we saw. But, according to the trace you are showing, you only have one repository defined (the central repository) or maven would print something like this:
Reason: Unable to download the artifact from any repository
url.project:project:pom:x.x
from the specified remote repositories:
central (http://repo1.maven.org/),
another-repository (http://another/repository)
So, basically, maven is unable to find the url.project:project:pom:x.x
because it is not available in central.
But without knowing which project you've checked out (it has maybe specific instructions) or which dependency is missing (it can maybe be found in another repository), it's impossible to help you further.
I came across this code snippet that solves it.
//Creating a sample ArrayList
List<Long> list = new ArrayList<Long>();
//Adding some long type values
list.add(100l);
list.add(200l);
list.add(300l);
//Converting the ArrayList to a Long
Long[] array = (Long[]) list.toArray(new Long[list.size()]);
//Printing the results
System.out.println(array[0] + " " + array[1] + " " + array[2]);
The conversion works as follows:
.NET compact framework has been ported to Symbian OS (http://www.redfivelabs.com/). If .NET as a 'closed' platform can be ported to this platform, I can't see any reason why it cannot be done for Android.
break||(
code that cannot contain non paired closing bracket
)
While the goto
solution is a good option it will not work within brackets (including FOR and IF commands).But this will. Though you should be careful about closing brackets and invalid syntax for FOR
and IF
commands because they will be parsed.
Update
The update in the dbenham's answer gave me some ideas.
First - there are two different cases where we can need multi line comments - in a bracket's context where GOTO cannot be used and outside it.
Inside brackets context we can use another brackets if there's a condition which prevents the code to be executed.Though the code thede will still be parsed
and some syntax errors will be detected (FOR
,IF
,improperly closed brackets, wrong parameter expansion ..).So if it is possible it's better to use GOTO.
Though it is not possible to create a macro/variable used as a label - but is possible to use macros for bracket's comments.Still two tricks can be used make the GOTO
comments more symetrical and more pleasing (at least for me). For this I'll use two tricks - 1) you can put a single symbol in front of a label and goto will still able
to find it (I have no idea why is this.My guues it is searching for a drive). 2) you can put a single :
at the end of a variable name and a replacement/subtring feature will be not triggered (even under enabled extensions). Wich combined with the macros for brackets comments can
make the both cases to look almost the same.
So here are the examples (in the order I like them most):
With rectangular brackets:
@echo off
::GOTO comment macro
set "[:=goto :]%%"
::brackets comment macros
set "[=rem/||(" & set "]=)"
::testing
echo not commented 1
%[:%
multi
line
comment outside of brackets
%:]%
echo not commented 2
%[:%
second multi
line
comment outside of brackets
%:]%
::GOTO macro cannot be used inside for
for %%a in (first second) do (
echo first not commented line of the %%a execution
%[%
multi line
comment
%]%
echo second not commented line of the %%a execution
)
With curly brackets:
@echo off
::GOTO comment macro
set "{:=goto :}%%"
::brackets comment macros
set "{=rem/||(" & set "}=)"
::testing
echo not commented 1
%{:%
multi
line
comment outside of brackets
%:}%
echo not commented 2
%{:%
second multi
line
comment outside of brackets
%:}%
::GOTO macro cannot be used inside for loop
for %%a in (first second) do (
echo first not commented line of the %%a execution
%{%
multi line
comment
%}%
echo second not commented line of the %%a execution
)
With parentheses:
@echo off
::GOTO comment macro
set "(:=goto :)%%"
::brackets comment macros
set "(=rem/||(" & set ")=)"
::testing
echo not commented 1
%(:%
multi
line
comment outside of brackets
%:)%
echo not commented 2
%(:%
second multi
line
comment outside of brackets
%:)%
::GOTO macro cannot be used inside for loop
for %%a in (first second) do (
echo first not commented line of the %%a execution
%(%
multi line
comment
%)%
echo second not commented line of the %%a execution
)
Mixture between powershell and C styles (<
cannot be used because the redirection is with higher prio.*
cannot be used because of the %*
) :
@echo off
::GOTO comment macro
set "/#:=goto :#/%%"
::brackets comment macros
set "/#=rem/||(" & set "#/=)"
::testing
echo not commented 1
%/#:%
multi
line
comment outside of brackets
%:#/%
echo not commented 2
%/#:%
second multi
line
comment outside of brackets
%:#/%
::GOTO macro cannot be used inside for loop
for %%a in (first second) do (
echo first not commented line of the %%a execution
%/#%
multi line
comment
%#/%
echo second not commented line of the %%a execution
)
To emphase that's a comment (thought it is not so short):
@echo off
::GOTO comment macro
set "REM{:=goto :}REM%%"
::brackets comment macros
set "REM{=rem/||(" & set "}REM=)"
::testing
echo not commented 1
%REM{:%
multi
line
comment outside of brackets
%:}REM%
echo not commented 2
%REM{:%
second multi
line
comment outside of brackets
%:}REM%
::GOTO macro cannot be used inside for
for %%a in (first second) do (
echo first not commented line of the %%a execution
%REM{%
multi line
comment
%}REM%
echo second not commented line of the %%a execution
)
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
The .gitignore
file should be in your repository, so it should indeed be added and committed in, as git status
suggests. It has to be a part of the repository tree, so that changes to it can be merged and so on.
So, add it to your repository, it should not be gitignored.
If you really want you can add .gitignore
to the .gitignore
file if you don't want it to be committed. However, in that case it's probably better to add the ignores to .git/info/exclude
, a special checkout-local file that works just like .gitignore but does not show up in "git status" since it's in the .git
folder.
1)Open the command prompt or terminal based on your OS.
2)Then type java --version
in the terminal.
3) If java is installed successfullly it will show the respective version .
if your tmp folder is relative to the directory where your code is running remove the /
in front of /tmp
.
So you just have tmp/test.jpg
in your code. This worked for me in a similar situation.
Put the javascript part and the end right before the closing </body>
then it should work.
<img onclick="exportToForm('1.6','55','10','50','1');" src="China-Flag-256.png"/>
<button onclick="exportToForm('1.6','55','10','50','1');" style="background-color: #00FFFF">Export</button>
<script type="text/javascript">
function exportToForm(a,b,c,d,e) {
alert(a + b);
window.external.values(a.value, b.value, c.value, d.value, e.value);
}
</script>
It probably depends on your settings, but I usually do this with A<delete>
Where A
is append at the end of the line. It probably requires nocompatible
mode :)
In Javascript null
is not an object
type it is a primitave
type.
What is the difference?
Undefined refers to a pointer that has not been set.
Null refers to the null pointer for example something has manually set a variable to be of type null
I'll have a go at this complicated subject.
The origin itself is the name of a host (scheme, hostname, and port) i.g. https://www.google.com
or could be a locally opened file file://
etc.. It is where something (i.g. a web page) originated from. When you open your web browser and go to https://www.google.com
, the origin of the web page that is displayed to you is https://www.google.com
. You can see this in Chrome Dev Tools under Security
:
The same applies for if you open a local HTML file via your file explorer (which is not served via a server):
When you open your browser and go to https://website.com
, that website will have the origin of https://website.com
. This website will most likely only fetch images, icons, js files and do API calls towards https://website.com
, basically it is calling the same server as it was served from. It is doing calls to the same origin.
If you open your web browser and open a local HTML file and in that html file there is javascript which wants to do a request to google for example, you get the following error:
The same-origin policy tells the browser to block cross-origin requests. In this instance origin null
is trying to do a request to https://www.google.com
(a cross-origin request). The browser will not allow this because of the CORS Policy which is set and that policy is that cross-origin requests is not allowed.
Same applies for if my page was served from a server on localhost:
If we host our own localhost API server running on localhost:3000 with the following code:
const express = require('express')
const app = express()
app.use(express.static('public'))
app.get('/hello', function (req, res) {
// res.header("Access-Control-Allow-Origin", "*");
res.send('Hello World');
})
app.listen(3000, () => {
console.log('alive');
})
And open a HTML file (that does a request to the localhost:3000 server) directory from the file explorer the following error will happen:
Since the web page was not served from the localhost server on localhost:3000 and via the file explorer the origin is not the same as the server API origin, hence a cross-origin request is being attempted. The browser is stopping this attempt due to CORS Policy.
But if we uncomment the commented line:
const express = require('express')
const app = express()
app.use(express.static('public'))
app.get('/hello', function (req, res) {
res.header("Access-Control-Allow-Origin", "*");
res.send('Hello World');
})
app.listen(3000, () => {
console.log('alive');
})
And now try again:
It works, because the server which sends the HTTP response included now a header stating that it is ok for cross-origin requests to happen to the server, this means the browser will let it happen, hence no error.
Following is taken from: https://web.dev/cross-origin-resource-sharing/#how-does-cors-work
Remember, the same-origin policy tells the browser to block cross-origin requests. When you want to get a public resource from a different origin, the resource-providing server needs to tell the browser "This origin where the request is coming from can access my resource". The browser remembers that and allows cross-origin resource sharing.
Step 1: client (browser) request When the browser is making a cross-origin request, the browser adds an Origin header with the current origin (scheme, host, and port).
Step 2: server response On the server side, when a server sees this header, and wants to allow access, it needs to add an Access-Control-Allow-Origin header to the response specifying the requesting origin (or * to allow any origin.)
Step 3: browser receives response When the browser sees this response with an appropriate Access-Control-Allow-Origin header, the browser allows the response data to be shared with the client site.
Here is another good answer, more detailed as to what is happening: https://stackoverflow.com/a/10636765/1137669
You can do the following:
Assuming your container div has a class "yellow".
.yellow div {
// Apply margin to every child in this container
margin: 10px;
}
.yellow div:first-child, .yellow div:nth-child(3n+1) {
// Remove the margin on the left side on the very first and then every fourth element (for example)
margin-left: 0;
}
.yellow div:last-child {
// Remove the right side margin on the last element
margin-right: 0;
}
The number 3n+1 equals every fourth element outputted and will clearly only work if you know how many will be displayed in a row, but it should illustrate the example. More details regarding nth-child here.
Note: For :first-child to work in IE8 and earlier, a <!DOCTYPE>
must be declared.
Note2: The :nth-child() selector is supported in all major browsers, except IE8 and earlier.
I have a suspicion that you either copy/pasted a part of your Haml template into the file, or you're working with a non-Unicode/non-UTF-8 friendly editor.
See if you can recreate that file from the scratch in a UTF-8 friendly editor. There are plenty for any platform and see whether this fixes your problem. Start by erasing the line with #content
and retyping it manually.
I want to understand the lock each transaction isolation takes on the table
For example, you have 3 concurrent processes A, B and C. A starts a transaction, writes data and commit/rollback (depending on results). B just executes a SELECT
statement to read data. C reads and updates data. All these process work on the same table T.
WHERE aField > 10 AND aField < 20
, A inserts data where aField
value is between 10 and 20, then B reads the data again and get a different result.I want to understand where we define these isolation levels: only at JDBC/hibernate level or in DB also
Using JDBC, you define it using Connection#setTransactionIsolation
.
Using Hibernate:
<property name="hibernate.connection.isolation">2</property>
Where
Hibernate configuration is taken from here (sorry, it's in Spanish).
By the way, you can set the isolation level on RDBMS as well:
SET ISOLATION TO DIRTY READ
sentence.)and on and on...
A simple example where the operator checks if player's id is 1 and sets enemy id depending on the result
player_id=1
....
player_id==1? enemy_id=2 : enemy_id=1
# => enemy=2
And I found a post about to the topic which seems pretty helpful.
If yout download a customized bootstrap 3 distro you must:
fonts
to your bootstrap directory. Put together with the other folders "css, js".Example Before:
\css
\js
index.html
Example After Upload:
\css
\fonts
\js
index.html
will not work.. use $(window)
instead
$(window).on('shown.bs.modal', function() {
$('#code').modal('show');
alert('shown');
});
$(window).on('hidden.bs.modal', function() {
$('#code').modal('hide');
alert('hidden');
});
I came across this error today when I wanted to add a new column like this
df_temp['REMARK_TYPE'] = df.REMARK.apply(lambda v: 1 if str(v)!='nan' else 0)
I wanted to process the REMARK
column of df_temp
to return 1 or 0. However I typed wrong variable with df
. And it returned error like this:
----> 1 df_temp['REMARK_TYPE'] = df.REMARK.apply(lambda v: 1 if str(v)!='nan' else 0)
/usr/lib64/python2.7/site-packages/pandas/core/frame.pyc in __setitem__(self, key, value)
2417 else:
2418 # set column
-> 2419 self._set_item(key, value)
2420
2421 def _setitem_slice(self, key, value):
/usr/lib64/python2.7/site-packages/pandas/core/frame.pyc in _set_item(self, key, value)
2483
2484 self._ensure_valid_index(value)
-> 2485 value = self._sanitize_column(key, value)
2486 NDFrame._set_item(self, key, value)
2487
/usr/lib64/python2.7/site-packages/pandas/core/frame.pyc in _sanitize_column(self, key, value, broadcast)
2633
2634 if isinstance(value, Series):
-> 2635 value = reindexer(value)
2636
2637 elif isinstance(value, DataFrame):
/usr/lib64/python2.7/site-packages/pandas/core/frame.pyc in reindexer(value)
2625 # duplicate axis
2626 if not value.index.is_unique:
-> 2627 raise e
2628
2629 # other
ValueError: cannot reindex from a duplicate axis
As you can see it, the right code should be
df_temp['REMARK_TYPE'] = df_temp.REMARK.apply(lambda v: 1 if str(v)!='nan' else 0)
Because df
and df_temp
have a different number of rows. So it returned ValueError: cannot reindex from a duplicate axis
.
Hope you can understand it and my answer can help other people to debug their code.
How about
with open(csv_input_path + file, 'r') as ft:
header = ft.readline() # read only first line; returns string
header_list = header.split(',') # returns list
I am assuming your input file is CSV format. If using pandas, it takes more time if the file is big size because it loads the entire data as the dataset.
Here is a solution that works in IE, Firefox, and Chrome. The idea is to increase the font size of the br element from the body size of 14px to 18px, and lower the element by 4px so the extra size is below the text line. The result is 4px of extra whitespace below the br.
br
{
font-size: 18px;
vertical-align: -4px;
}
@echo off
setlocal enableextensions
set count=0
for %%x in (*.txt) do set /a count+=1
echo %count%
endlocal
pause
This is the best.... your variable is: %count%
NOTE: you can change (*.txt
) to any other file extension to count other files.....
You may have a try for https://github.com/cls1991/pef. It will remove package with its all dependencies.
Simple way to catch all scroll events (touch and wheel)
window.onscroll = function(e) {
// print "false" if direction is down and "true" if up
console.log(this.oldScroll > this.scrollY);
this.oldScroll = this.scrollY;
}
$('#iframe').load(function() {
var src = $('#iframe').contents().find("html").html();
alert(src);
});
There are multiple nuget packages read in the following order:
NuGetDefaults.Config file
. You will find this in %ProgramFiles(x86)%\NuGet\Config
.%APPDATA%\NuGet\nuget.config
.nuget.config
beginning from the root of your drive up to the directory where nuget.exe is called.You can find more information here.
I can't get to your google docs file at the moment but there are some issues with your code that I will try to address while answering
Sub stituterangersNEW()
Dim t As Range
Dim x As Range
Dim dify As Boolean
Dim difx As Boolean
Dim time2 As Date
Dim time1 As Date
'You said time1 doesn't change, so I left it in a singe cell.
'If that is not correct, you will have to play with this some more.
time1 = Range("A6").Value
'Looping through each of our output cells.
For Each t In Range("B7:E9") 'Change these to match your real ranges.
'Looping through each departure date/time.
'(Only one row in your example. This can be adjusted if needed.)
For Each x In Range("B2:E2") 'Change these to match your real ranges.
'Check to see if our dep time corresponds to
'the matching column in our output
If t.Column = x.Column Then
'If it does, then check to see what our time value is
If x > 0 Then
time2 = x.Value
'Apply the change to the output cell.
t.Value = time1 - time2
'Exit out of this loop and move to the next output cell.
Exit For
End If
End If
'If the columns don't match, or the x value is not a time
'then we'll move to the next dep time (x)
Next x
Next t
End Sub
EDIT
I changed you worksheet to play with (see above for the new Sub). This probably does not suite your needs directly, but hopefully it will demonstrate the conept behind what I think you want to do. Please keep in mind that this code does not follow all the coding best preactices I would recommend (e.g. validating the time is actually a TIME and not some random other data type).
A B C D E
1 LOAD_NUMBER 1 2 3 4
2 DEPARTURE_TIME_DATE 11/12/2011 19:30 11/12/2011 19:30 11/12/2011 19:30 11/12/2011 20:00
4 Dry_Refrig 7585.1 0 10099.8 16700
6 1/4/2012 19:30
Using the sub I got this output:
A B C D E
7 Friday 1272:00:00 1272:00:00 1272:00:00 1271:30:00
8 Saturday 1272:00:00 1272:00:00 1272:00:00 1271:30:00
9 Thursday 1272:00:00 1272:00:00 1272:00:00 1271:30:00
In order for a bot to send a message, you need <client>.send()
, the client
is where the bot will send a message to(A channel, everywhere in the server, or a PM). Since you want the bot to PM a certain user, you can use message.author
as your client
. (you can replace author
as mentioned user in a message or something, etc)
Hence, the answer is: message.author.send("Your message here.")
I recommend looking up the Discord.js documentation about a certain object's properties whenever you get stuck, you might find a particular function that may serve as your solution.
in my case, upgrading pip did the trick. Also, I've installed scipy with -U parameter (upgrade all packages to the last available version)
Place it inside another div, use CSS to move the button to the middle:
<div style="width:100%;height:100%;position:absolute;vertical-align:middle;text-align:center;">
<button type="button" style="background-color:yellow;margin-left:auto;margin-right:auto;display:block;margin-top:22%;margin-bottom:0%">
mybuttonname</button>
</div>?
Here is an example: JsFiddle
This works with jQuery UI v1.10.3
$("selector").dialog({height:'auto', width:'auto'});
Here's Herb Sutter's take
Guideline: Don’t pass a smart pointer as a function parameter unless you want to use or manipulate the smart pointer itself, such as to share or transfer ownership.
Guideline: Express that a function will store and share ownership of a heap object using a by-value shared_ptr parameter.
Guideline: Use a non-const shared_ptr& parameter only to modify the shared_ptr. Use a const shared_ptr& as a parameter only if you’re not sure whether or not you’ll take a copy and share ownership; otherwise use widget* instead (or if not nullable, a widget&).
I worked through this solution that accommodates a published, draft and historical versions of the data:
{
published: {},
draft: {},
history: {
"1" : {
metadata: <value>,
document: {}
},
...
}
}
I explain the model further here: http://software.danielwatrous.com/representing-revision-data-in-mongodb/
For those that may implement something like this in Java, here's an example:
http://software.danielwatrous.com/using-java-to-work-with-versioned-data/
Including all the code that you can fork, if you like
Use the following:
$("select").attr("disabled", "disabled");
Or simply add id="pizza_kind"
to <select>
tag, like <select name="pizza_kind" id="pizza_kind">
: jsfiddle link
The reason your code didn't work is simply because $("#pizza_kind")
isn't selecting the <select>
element because it does not have id="pizza_kind"
.
Edit: actually, a better selector is $("select[name='pizza_kind']")
: jsfiddle link
Here:
function submitClick(e)
{
e.preventDefault();
$("#messageSent").slideDown("slow");
setTimeout('$("#messageSent").slideUp();
$("#contactForm").slideUp("slow")', 2000);
}
$(document).ready(function() {
$('#contactSend').click(submitClick);
});
Instead of using the onClick event, you'll use bind an 'click' event handler using jQuery to the submit button (or whatever button), which will take submitClick as a callback. We pass the event to the callback to call preventDefault, which is what will prevent the click from submitting the form.
An object is defined by an OBJECT_ID, which is unique. If A and B are objects and A == B is true, then they are the very same object, they have the same data and methods, but, this is also true:
A.OBJECT_ID == B.OBJECT_ID
if A.Equals(B) is true, that means that the two objects are in the same state, but this doesn't mean that A is the very same as B.
Strings are objects.
Note that the == and Equals operators are reflexive, simetric, tranzitive, so they are equivalentic relations (to use relational algebraic terms)
What this means: If A, B and C are objects, then:
(1) A == A is always true; A.Equals(A) is always true (reflexivity)
(2) if A == B then B == A; If A.Equals(B) then B.Equals(A) (simetry)
(3) if A == B and B == C, then A == C; if A.Equals(B) and B.Equals(C) then A.Equals(C) (tranzitivity)
Also, you can note that this is also true:
(A == B) => (A.Equals(B)), but the inverse is not true.
A B =>
0 0 1
0 1 1
1 0 0
1 1 1
Example of real life: Two Hamburgers of the same type have the same properties: they are objects of the Hamburger class, their properties are exactly the same, but they are different entities. If you buy these two Hamburgers and eat one, the other one won't be eaten. So, the difference between Equals and ==: You have hamburger1 and hamburger2. They are exactly in the same state (the same weight, the same temperature, the same taste), so hamburger1.Equals(hamburger2) is true. But hamburger1 == hamburger2 is false, because if the state of hamburger1 changes, the state of hamburger2 not necessarily change and vice versa.
If you and a friend get a Hamburger, which is yours and his in the same time, then you must decide to split the Hamburger into two parts, because you.getHamburger() == friend.getHamburger() is true and if this happens: friend.eatHamburger(), then your Hamburger will be eaten too.
I could write other nuances about Equals and ==, but I'm getting hungry, so I have to go.
Best regards, Lajos Arpad.
Since fields
or fns
are cell arrays, you have to index with curly brackets {}
in order to access the contents of the cell, i.e. the string.
Note that instead of looping over a number, you can also loop over fields
directly, making use of a neat Matlab features that lets you loop through any array. The iteration variable takes on the value of each column of the array.
teststruct = struct('a',3,'b',5,'c',9)
fields = fieldnames(teststruct)
for fn=fields'
fn
%# since fn is a 1-by-1 cell array, you still need to index into it, unfortunately
teststruct.(fn{1})
end
Make sure when executing Michael Krelin's solution you do the following
cat <your_public_key_file> >> ~/.ssh/authorized_keys
Note the double >
without the double >
the existing contents of authorized_keys will be over-written (nuked!) and that may not be desirable
You need Set with objects:
Set rng = Sheet8.Range("A12")
Sheet8 is fine.
Sheet1.[a1]
Server.MapPath specifies the relative or virtual path to map to a physical directory.
Server.MapPath(".")
1 returns the current physical directory of the file (e.g. aspx) being executedServer.MapPath("..")
returns the parent directoryServer.MapPath("~")
returns the physical path to the root of the applicationServer.MapPath("/")
returns the physical path to the root of the domain name (is not necessarily the same as the root of the application)An example:
Let's say you pointed a web site application (http://www.example.com/
) to
C:\Inetpub\wwwroot
and installed your shop application (sub web as virtual directory in IIS, marked as application) in
D:\WebApps\shop
For example, if you call Server.MapPath()
in following request:
http://www.example.com/shop/products/GetProduct.aspx?id=2342
then:
Server.MapPath(".")
1 returns D:\WebApps\shop\products
Server.MapPath("..")
returns D:\WebApps\shop
Server.MapPath("~")
returns D:\WebApps\shop
Server.MapPath("/")
returns C:\Inetpub\wwwroot
Server.MapPath("/shop")
returns D:\WebApps\shop
If Path starts with either a forward slash (/
) or backward slash (\
), the MapPath()
returns a path as if Path was a full, virtual path.
If Path doesn't start with a slash, the MapPath()
returns a path relative to the directory of the request being processed.
Note: in C#, @
is the verbatim literal string operator meaning that the string should be used "as is" and not be processed for escape sequences.
Footnotes
Server.MapPath(null)
and Server.MapPath("")
will produce this effect too.As many have already told you:
mainList.get(3);
Be sure to check the ArrayList Javadoc.
Also, be careful with the arrays indices: in Java, the first element is at index 0
. So if you are trying to get the third element, your solution would be mainList.get(2);
Few ways of declaring a typed array in TypeScript
are
const booleans: Array<boolean> = new Array<boolean>();
// OR, JS like type and initialization
const booleans: boolean[] = [];
// or, if you have values to initialize
const booleans: Array<boolean> = [true, false, true];
// get a vaue from that array normally
const valFalse = booleans[1];
You can't, but you can use BETWEEN
SELECT job FROM mytable WHERE id BETWEEN 10 AND 15
Note that BETWEEN
is inclusive, and will include items with both id 10 and 15.
If you do not want inclusion, you'll have to fall back to using the >
and <
operators.
SELECT job FROM mytable WHERE id > 10 AND id < 15
In order to override setter
and getter
for swift variables use the below given code
var temX : Int?
var x: Int?{
set(newX){
temX = newX
}
get{
return temX
}
}
We need to keep the value of variable in a temporary variable, since trying to access the same variable whose getter/setter is being overridden will result in infinite loops.
We can invoke the setter simply like this
x = 10
Getter will be invoked on firing below given line of code
var newVar = x
If you're not restricted to JQuery, you can use the prototype.js framework. It has a class called Hash: You can even use JQuery & prototype.js together. Just type jQuery.noConflict();
var h = new Hash();
h.set("key", "value");
h.get("key");
h.keys(); // returns an array of keys
h.values(); // returns an array of values
Overriding the input directive does seem to do the job. I made some minor alterations to Dan Hunsaker's code:
$parse().assign()
on fields without a ngModel attributes.assign()
function param order.app.directive('input', function ($parse) {
return {
restrict: 'E',
require: '?ngModel',
link: function (scope, element, attrs) {
if (attrs.ngModel && attrs.value) {
$parse(attrs.ngModel).assign(scope, attrs.value);
}
}
};
});
I tried to write a procedure doing that, based on @PhilHibbs codes, on a different way. Please have a look and test.
CREATE OR REPLACE FUNCTION dump(IN p_schema text, IN p_table text, IN p_where text)
RETURNS setof text AS
$BODY$
DECLARE
dumpquery_0 text;
dumpquery_1 text;
selquery text;
selvalue text;
valrec record;
colrec record;
BEGIN
-- ------ --
-- GLOBAL --
-- build base INSERT
-- build SELECT array[ ... ]
dumpquery_0 := 'INSERT INTO ' || quote_ident(p_schema) || '.' || quote_ident(p_table) || '(';
selquery := 'SELECT array[';
<<label0>>
FOR colrec IN SELECT table_schema, table_name, column_name, data_type
FROM information_schema.columns
WHERE table_name = p_table and table_schema = p_schema
ORDER BY ordinal_position
LOOP
dumpquery_0 := dumpquery_0 || quote_ident(colrec.column_name) || ',';
selquery := selquery || 'CAST(' || quote_ident(colrec.column_name) || ' AS TEXT),';
END LOOP label0;
dumpquery_0 := substring(dumpquery_0 ,1,length(dumpquery_0)-1) || ')';
dumpquery_0 := dumpquery_0 || ' VALUES (';
selquery := substring(selquery ,1,length(selquery)-1) || '] AS MYARRAY';
selquery := selquery || ' FROM ' ||quote_ident(p_schema)||'.'||quote_ident(p_table);
selquery := selquery || ' WHERE '||p_where;
-- GLOBAL --
-- ------ --
-- ----------- --
-- SELECT LOOP --
-- execute SELECT built and loop on each row
<<label1>>
FOR valrec IN EXECUTE selquery
LOOP
dumpquery_1 := '';
IF not found THEN
EXIT ;
END IF;
-- ----------- --
-- LOOP ARRAY (EACH FIELDS) --
<<label2>>
FOREACH selvalue in ARRAY valrec.MYARRAY
LOOP
IF selvalue IS NULL
THEN selvalue := 'NULL';
ELSE selvalue := quote_literal(selvalue);
END IF;
dumpquery_1 := dumpquery_1 || selvalue || ',';
END LOOP label2;
dumpquery_1 := substring(dumpquery_1 ,1,length(dumpquery_1)-1) || ');';
-- LOOP ARRAY (EACH FIELD) --
-- ----------- --
-- debug: RETURN NEXT dumpquery_0 || dumpquery_1 || ' --' || selquery;
-- debug: RETURN NEXT selquery;
RETURN NEXT dumpquery_0 || dumpquery_1;
END LOOP label1 ;
-- SELECT LOOP --
-- ----------- --
RETURN ;
END
$BODY$
LANGUAGE plpgsql VOLATILE;
And then :
-- for a range
SELECT dump('public', 'my_table','my_id between 123456 and 123459');
-- for the entire table
SELECT dump('public', 'my_table','true');
tested on my postgres 9.1, with a table with mixed field datatype (text, double, int,timestamp without time zone, etc).
That's why the CAST in TEXT type is needed. My test run correctly for about 9M lines, looks like it fail just before 18 minutes of running.
ps : I found an equivalent for mysql on the WEB.
These answers are all very good, but I wanted to share another thing I discovered on stackoverflow that is really quite useful, here is the direct link
Basically, @DidzisElferts shows how you can get all the colours, coordinates, etc that ggplot uses to build a plot you created. Very nice!
p <- ggplot(mpg,aes(x=class,fill=class)) + geom_bar()
ggplot_build(p)$data
[[1]]
fill y count x ndensity ncount density PANEL group ymin ymax xmin xmax
1 #F8766D 5 5 1 1 1 1.111111 1 1 0 5 0.55 1.45
2 #C49A00 47 47 2 1 1 1.111111 1 2 0 47 1.55 2.45
3 #53B400 41 41 3 1 1 1.111111 1 3 0 41 2.55 3.45
4 #00C094 11 11 4 1 1 1.111111 1 4 0 11 3.55 4.45
5 #00B6EB 33 33 5 1 1 1.111111 1 5 0 33 4.55 5.45
6 #A58AFF 35 35 6 1 1 1.111111 1 6 0 35 5.55 6.45
7 #FB61D7 62 62 7 1 1 1.111111 1 7 0 62 6.55 7.45
Per this comment (and I checked that this is true), rado's answer is very close but leaves git in a detached head state. Instead, remove HEAD
and use this to remove <commit-id>
from the branch you're on:
git rebase --onto <commit-id>^ <commit-id>
I've used MongoDB extensively (for the past 6 months), building a hierarchical data management system, and I can vouch for both the ease of setup (install it, run it, use it!) and the speed. As long as you think about indexes carefully, it can absolutely scream along, speed-wise.
I gather that Cassandra, due to its use with large-scale projects like Twitter, has better scaling functionality, although the MongoDB team is working on parity there. I should point out that I've not used Cassandra beyond the trial-run stage, so I can't speak for the detail.
The real swinger for me, when we were assessing NoSQL databases, was the querying - Cassandra is basically just a giant key/value store, and querying is a bit fiddly (at least compared to MongoDB), so for performance you'd have to duplicate quite a lot of data as a sort of manual index. MongoDB, on the other hand, uses a "query by example" model.
For example, say you've got a Collection (MongoDB parlance for the equivalent to a RDMS table) containing Users. MongoDB stores records as Documents, which are basically binary JSON objects. e.g:
{
FirstName: "John",
LastName: "Smith",
Email: "[email protected]",
Groups: ["Admin", "User", "SuperUser"]
}
If you wanted to find all of the users called Smith who have Admin rights, you'd just create a new document (at the admin console using Javascript, or in production using the language of your choice):
{
LastName: "Smith",
Groups: "Admin"
}
...and then run the query. That's it. There are added operators for comparisons, RegEx filtering etc, but it's all pretty simple, and the Wiki-based documentation is pretty good.
If I have one thing that I love to share with respect to CSS, it's MY FAVE WAY OF CENTERING THINGS ALONG BOTH AXES!!!
Advantages of this method:
I always do this by using 2 classes: One to specify the parent element, whose content will be centered (.centered-wrapper
), and the 2nd one to specify which child of the parent is centered (.centered-content
). This 2nd class is useful in the case where the parent has multiple children, but only 1 needs to be centered).
In this case, body
will be the .centered-wrapper
, and an inner div
will be .centered-content
.
<html>
<head>...</head>
<body class="centered-wrapper">
<div class="centered-content">...</div>
</body>
</html>
The idea for centering will now be to make .centered-content
an inline-block
. This will easily facilitate horizontal centering, through text-align: center;
, and also allows for vertical centering as you shall see.
.centered-wrapper {
position: relative;
text-align: center;
}
.centered-wrapper:before {
content: "";
position: relative;
display: inline-block;
width: 0; height: 100%;
vertical-align: middle;
}
.centered-content {
display: inline-block;
vertical-align: middle;
}
This gives you 2 really reusable classes for centering any child inside of any parent! Just add the .centered-wrapper
and .centered-content
classes.
So, what's up with that :before
element? It facilitates vertical-align: middle;
and is necessary because vertical alignment isn't relative to the height of the parent - vertical alignment is relative to the height of the tallest sibling!!!. Therefore, by ensuring that there is a sibling whose height is the parent's height (100% height, 0 width to make it invisible), we know that vertical alignment will be with respect to the parent's height.
One last thing: You need to ensure that your html
and body
tags are the size of the window so that centering to them is the same as centering to the browser!
html, body {
width: 100%;
height: 100%;
padding: 0;
margin: 0;
}
Try this module: http://pypi.python.org/pypi/interruptingcow/
from interruptingcow import timeout
try:
with timeout(60*5, exception=RuntimeError):
while True:
test = 0
if test == 5:
break
test = test - 1
except RuntimeError:
pass
When there is a need to restrict access to some functions, we'll use the static keyword while defining and declaring a function.
/* file ab.c */
static void function1(void)
{
puts("function1 called");
}
And store the following code in another file ab1.c
/* file ab1.c */
int main(void)
{
function1();
getchar();
return 0;
}
/* in this code, we'll get a "Undefined reference to function1".Because function 1 is declared static in file ab.c and can't be used in ab1.c */
In case someone cares just about the error nothing added to commit but untracked files present (use "git add" to track)
and not about Please move or remove them before you can merge.
. You might have a look at the answers on Git - Won't add files?
There you find at least 2 good candidates for the issue in question here: that you either are in a subfolder or in a parent folder, but not in the actual repo folder. If you are in the directory one level too high, this will definitely raise that message "nothing added to commit…", see my answer in the link for details. I do not know if the same message occurs when you are in a subfolder, but it is likely. That could fit to your explanations.
In css you can't set table-cells max height, and if you white-space nowrap then you can't break it with max width, so the solution is javascript working in all browsers.
So, this can work for you.
For Limiting max-height of all cells or rows in table with Javascript:
This script is good for horizontal overflow tables.
This script increase the table width 300px each time, maximum 4000px until rows shrinks to max-height(160px) , and you can also edit numbers as your need.
var i = 0, row, table = document.getElementsByTagName('table')[0], j = table.offsetWidth;
while (row = table.rows[i++]) {
while (row.offsetHeight > 160 && j < 4000) {
j += 300;
table.style.width = j + 'px';
}
}
Source: HTML Table Solution Max Height Limit For Rows Or Cells By Increasing Table Width, Javascript
Try this one too:
let base64="iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHwAAAABJRU5ErkJggg==";
let buffer=Uint8Array.from(atob(base64), c => c.charCodeAt(0));
let blob=new Blob([buffer], { type: "image/gif" });
let url=URL.createObjectURL(blob);
let img=document.createElement("img");
img.src=url;
document.body.appendChild(img);
Not recommended for production as it is only compatible with modern browsers.
You can use the following to convert string to int:
For details refer to Type Conversion Functions (Visual Basic).
I think the main difference is security.
Windows Authentication means that the identity is handled as part of the windows handashaking and now password is ever 'out there' for interception.
SQL Authentication means that you have to store (or provide) a username and a password yourself making it much easier to breach. A heap of effort has gone into making windows authentication very robust and secure.
Might I suggest that if you do implement Windows Authentication use Groups and Roles to do it. Groups in Windows and Roles in SQL. Having to setup lots of users in SQL is a big pain when you can just setup the group and then add each user to the group. (I think most security should be done this way anyway).
This worked for me using Sql Server 2008:
USE <database_name>;
GO
SELECT SCHEMA_NAME(schema_id) AS schema_name
, t.name AS table_name
, c.name AS column_name
FROM sys.tables AS t
JOIN sys.identity_columns c ON t.object_id = c.object_id
ORDER BY schema_name, table_name;
GO
I've tried the solutions above (and also) many other solutions from other posts.
In my case, I did it with the following setup:
public partial class WaitingDialog : Form
{
public WaitingDialog()
{
InitializeComponent();
SetStyle(ControlStyles.SupportsTransparentBackColor, true);
this.BackColor = Color.Transparent;
// Other stuff
}
protected override void OnPaintBackground(PaintEventArgs e) { /* Ignore */ }
}
As you can see, this is a mix of previously given answers.
In addition to @Ceki 's answer, If you are using logback and setup a config file in your project (usually logback.xml), you can define the log to plot the stack trace as well using
<encoder>
<pattern>%date |%-5level| [%thread] [%file:%line] - %msg%n%ex{full}</pattern>
</encoder>
the %ex in pattern is what makes the difference
I was running into this with a ServiceStack dll I had installed with nuget. Turns out there was another set of dlls available that were labeled signed. Not going to be the answer for everyone, but you may just need to check for an existing signed version of your assembly.
Select * from emp where joindate between date1 and date2;
But this query not show proper data.
Eg
1-jan-2013 to 12-jan-2013.
But it's show data
1-jan-2013 to 11-jan-2013.
Check here for how to add the activedirectory module if not there by default. This can be done on any machine and then it will allow you to access your active directory "domain control" server.
To prevent problems with stale links (I have found MSDN blogs to disappear for no reason in the past), in essence for Windows 7 you need to download and install Remote Server Administration Tools (KB958830). After installing do the following steps:
Windows server editions should already be OK but if not you need to download and install the Active Directory Management Gateway Service. If any of these links should stop working, you should still be able search for the KB article or download names and find them.
What this means is that you are trying to print out/output a value which is at least partially uninitialized. Can you narrow it down so that you know exactly what value that is? After that, trace through your code to see where it is being initialized. Chances are, you will see that it is not being fully initialized.
If you need more help, posting the relevant sections of source code might allow someone to offer more guidance.
EDIT
I see you've found the problem. Note that valgrind watches for Conditional jump or move based on unitialized variables. What that means is that it will only give out a warning if the execution of the program is altered due to the uninitialized value (ie. the program takes a different branch in an if statement, for example). Since the actual arithmetic did not involve a conditional jump or move, valgrind did not warn you of that. Instead, it propagated the "uninitialized" status to the result of the statement that used it.
It may seem counterintuitive that it does not warn you immediately, but as mark4o pointed out, it does this because uninitialized values get used in C all the time (examples: padding in structures, the realloc()
call, etc.) so those warnings would not be very useful due to the false positive frequency.
My gem version 2.0.3 and I was getting the same issue. This command resolved it:
gem install json --platform=ruby --verbose
This is not an answer, but a comment, but I could not write a comment with a formatted code, so here is the comment.
Lets say there is
public static void main(String[] args) {
try {
// do nothing or throw a RuntimeException
throw new RuntimeException("test");
} catch (Exception e) {
System.out.println(e.getMessage());
throw e;
}
}
The output is
test
Exception in thread "main" java.lang.RuntimeException: test
at MyClass.main(MyClass.java:10)
That method does not declare any "throws" Exceptions, but throws them! The trick is that the thrown exceptions are RuntimeExceptions (unchecked) that are not needed to be declared on the method. It is a bit misleading for the reader of the method, since all she sees is a "throw e;" statement but no declaration of the throws exception
Now, if we have
public static void main(String[] args) throws Exception {
try {
throw new Exception("test");
} catch (Exception e) {
System.out.println(e.getMessage());
throw e;
}
}
We MUST declare the "throws" exceptions in the method otherwise we get a compiler error.
Not padding but if your goal is to simply make it larger, you can increase the font-size
. And using it with font-size-adjust
reduces the font-size back to normal on select and not on options, so it ends up making the option
larger.
Not sure if it works on all browsers, or will keep working in current.
Tested on Chrome 85 & Firefox 81.
select {
font-size: 2em;
font-size-adjust: 0.3;
}
_x000D_
<label>
Select: <select>
<option>Option 1</option>
<option>Option 2</option>
<option>Option 3</option>
</select>
</label>
_x000D_
If you want to completely destroy the target, you have a couple of options. First you can remove the object from the DOM as described above...
console.log($target); // jQuery object
$target.remove(); // remove target from the DOM
console.log($target); // $target still exists
Option 1 - Then replace target with an empty jQuery object (jQuery 1.4+)
$target = $();
console.log($target); // empty jQuery object
Option 2 - Or delete the property entirely (will cause an error if you reference it elsewhere)
delete $target;
console.log($target); // error: $target is not defined
More reading: info about empty jQuery object, and info about delete
For people who like the .Net convention of "try" functions that return a boolean and handle a byref param containing the result. If you don't need the out parameter you can omit it and just use the return value.
StringTests.js
var obj1 = {};
var bool1 = '{"h":"happy"}'.tryParse(obj1); // false
var obj2 = {};
var bool2 = '2114509 GOODLUCKBUDDY 315852'.tryParse(obj2); // false
var obj3 = {};
if('{"house_number":"1","road":"Mauchly","city":"Irvine","county":"Orange County","state":"California","postcode":"92618","country":"United States of America","country_code":"us"}'.tryParse(obj3))
console.log(obj3);
StringUtils.js
String.prototype.tryParse = function(jsonObject) {
jsonObject = jsonObject || {};
try {
if(!/^[\[{]/.test(this) || !/[}\]]$/.test(this)) // begin / end with [] or {}
return false; // avoid error handling for strings that obviously aren't json
var json = JSON.parse(this);
if(typeof json === 'object'){
jsonObject.merge(json);
return true;
}
} catch (e) {
return false;
}
}
ObjectUtils.js
Object.defineProperty(Object.prototype, 'merge', {
value: function(mergeObj){
for (var propertyName in mergeObj) {
if (mergeObj.hasOwnProperty(propertyName)) {
this[propertyName] = mergeObj[propertyName];
}
}
return this;
},
enumerable: false, // this is actually the default
});
The short answer is that setting grid-auto-rows: 1fr;
on the grid container solves what was asked.
check if file exist in side the document/catchimage path :
NSString *stringPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)objectAtIndex:0];
NSString *tempName = [NSString stringWithFormat:@"%@/catchimage/%@.png",stringPath,@"file name"];
NSLog(@"%@",temName);
if([[NSFileManager defaultManager] fileExistsAtPath:temName]){
// ur code here
} else {
// ur code here**
}
Well now will be different after angular 5:
{{ number | currency :'GBP':'symbol':'1.2-2' }}
If your controller method is for something like file handling then ResponseEntity
is very handy:
@Controller
public class SomeController {
@RequestMapping.....
public ResponseEntity handleCall() {
if (isFound()) {
return new ResponseEntity(...);
}
else {
return new ResponseEntity(404);
}
}
}
You need the st_size
property of the object returned by os.stat
. You can get it by either using pathlib
(Python 3.4+):
>>> from pathlib import Path
>>> Path('somefile.txt').stat()
os.stat_result(st_mode=33188, st_ino=6419862, st_dev=16777220, st_nlink=1, st_uid=501, st_gid=20, st_size=1564, st_atime=1584299303, st_mtime=1584299400, st_ctime=1584299400)
>>> Path('somefile.txt').stat().st_size
1564
or using os.stat
:
>>> import os
>>> os.stat('somefile.txt')
os.stat_result(st_mode=33188, st_ino=6419862, st_dev=16777220, st_nlink=1, st_uid=501, st_gid=20, st_size=1564, st_atime=1584299303, st_mtime=1584299400, st_ctime=1584299400)
>>> os.stat('somefile.txt').st_size
1564
Output is in bytes.
Normally svn add *
works. But if you get message like svn: warning: W150002:
due to mix off versioned and non-versioned files in working copy. Use this command:
svn add <path to directory> --force
or
svn add * --force
Use this one:
ArrayList<String> x = new ArrayList(Arrays.asList("abc", "mno"));
I stumbled over this thread searching for answer to similar case. Basically all answers are found, but it's still hard to extract the essentials from them.
Assume a class Foo probably derived from some other class(es) with probably more classes derived from it.
Then accessing
this.method()
this.property
Foo.method()
Foo.property
this.constructor.method()
this.constructor.property
this.method()
this.property
Foo.method()
Foo.property
Foo.prototype.method.call( this )
Object.getOwnPropertyDescriptor( Foo.prototype,"property" ).get.call(this);
Keep in mind that using
this
isn't working this way when using arrow functions or invoking methods/getters explicitly bound to custom value.
this
is referring to current instance.super
is basically referring to same instance, but somewhat addressing methods and getters written in context of some class current one is extending (by using the prototype of Foo's prototype).this.constructor
.this
is available to refer to the definition of current class directly.super
is not referring to some instance either, but to static methods and getters written in context of some class current one is extending.Try this code:
class A {_x000D_
constructor( input ) {_x000D_
this.loose = this.constructor.getResult( input );_x000D_
this.tight = A.getResult( input );_x000D_
console.log( this.scaledProperty, Object.getOwnPropertyDescriptor( A.prototype, "scaledProperty" ).get.call( this ) );_x000D_
}_x000D_
_x000D_
get scaledProperty() {_x000D_
return parseInt( this.loose ) * 100;_x000D_
}_x000D_
_x000D_
static getResult( input ) {_x000D_
return input * this.scale;_x000D_
}_x000D_
_x000D_
static get scale() {_x000D_
return 2;_x000D_
}_x000D_
}_x000D_
_x000D_
class B extends A {_x000D_
constructor( input ) {_x000D_
super( input );_x000D_
this.tight = B.getResult( input ) + " (of B)";_x000D_
}_x000D_
_x000D_
get scaledProperty() {_x000D_
return parseInt( this.loose ) * 10000;_x000D_
}_x000D_
_x000D_
static get scale() {_x000D_
return 4;_x000D_
}_x000D_
}_x000D_
_x000D_
class C extends B {_x000D_
constructor( input ) {_x000D_
super( input );_x000D_
}_x000D_
_x000D_
static get scale() {_x000D_
return 5;_x000D_
}_x000D_
}_x000D_
_x000D_
class D extends C {_x000D_
constructor( input ) {_x000D_
super( input );_x000D_
}_x000D_
_x000D_
static getResult( input ) {_x000D_
return super.getResult( input ) + " (overridden)";_x000D_
}_x000D_
_x000D_
static get scale() {_x000D_
return 10;_x000D_
}_x000D_
}_x000D_
_x000D_
_x000D_
let instanceA = new A( 4 );_x000D_
console.log( "A.loose", instanceA.loose );_x000D_
console.log( "A.tight", instanceA.tight );_x000D_
_x000D_
let instanceB = new B( 4 );_x000D_
console.log( "B.loose", instanceB.loose );_x000D_
console.log( "B.tight", instanceB.tight );_x000D_
_x000D_
let instanceC = new C( 4 );_x000D_
console.log( "C.loose", instanceC.loose );_x000D_
console.log( "C.tight", instanceC.tight );_x000D_
_x000D_
let instanceD = new D( 4 );_x000D_
console.log( "D.loose", instanceD.loose );_x000D_
console.log( "D.tight", instanceD.tight );
_x000D_
The easiest way if you need to:
1) Click a button which defines select option
2) Go to another page, where select option is
3) Have that option value selected on another page
1) your button links (say, on home page)
<a onclick="location.href='contact.php?option=1';" style="cursor:pointer;">Sales</a>
<a onclick="location.href='contact.php?option=2';" style="cursor:pointer;">IT</a>
(where contact.php is your page with select options. Note the page url has ?option=1 or 2)
2) put this code on your second page (my case contact.php)
<?
if (isset($_GET['option']) && $_GET['option'] != "") {
$pg = $_GET['option'];
} ?>
3) make the option value selected, depending on the button clicked
<select>
<option value="Sales" <? if ($pg == '1') { echo "selected"; } ?> >Sales</option>
<option value="IT" <? if ($pg == '2') { echo "selected"; } ?> >IT</option>
</select>
.. and so on.
So this is an easy way of passing the value to another page (with select option list) through GET in url. No forms, no IDs.. just 3 steps and it works perfect.
The error is coming as your query is getting formed as
SELECT * FROM Employ where number = parseInt(val);
I dont know which DB you are using but no DB will understand parseInt
.
What you can do is use a variable say temp and store the value of parseInt(val)
in temp variable and make the query as
SELECT * FROM Employ where number = temp;
They sound about the same, however, the exit() also allows you to set the exit code of your PHP script.
Usually you don't really need this, but when writing console PHP scripts, you might want to check with for example Bash if the script completed everything in the right way.
Then you can use exit() and catch that later on. Die() however doesn't support that.
Die() always exists with code 0. So essentially a die() command does the following:
<?php
echo "I am going to die";
exit(0);
?>
Which is the same as:
<?php
die("I am going to die");
?>
For those who use Tomcat with Bitronix, this will fix the problem:
The error indicates that no handler could be found for your datasource 'jdbc/mydb', so you'll need to make sure your tomcat server refers to your bitronix configuration files as needed.
In case you're using btm-config.properties and resources.properties files to configure the datasource, specify these two JVM arguments in tomcat:
(if you already used them, make sure your references are correct):
e.g.
-Dbtm.root="C:\Program Files\Apache Software Foundation\Tomcat 7.0.59"
-Dbitronix.tm.configuration="C:\Program Files\Apache Software Foundation\Tomcat 7.0.59\conf\btm-config.properties"
Now, restart your server and check the log.
Try this
$.cookie('_cookieName', null, { path: '/' });
The { path: '/' } do the job for you
eval(a_string)
evaluates a string as Python code. Obviously this is not particularly safe. You can get safer (more restricted) evaluation by using the literal_eval
function from the ast
module.
raw_input()
is called that in Python 2.x because it gets raw, not "interpreted" input. input()
interprets the input, i.e. is equivalent to eval(raw_input())
.
In Python 3.x, input()
does what raw_input()
used to do, and you must evaluate the contents manually if that's what you want (i.e. eval(input())
).
Regex regex = new Regex(@"\W+");
string outputString = regex.Replace(inputString, " ");
If you want to parse the format yourself you could do it easily with a regex such as
private static Pattern pattern = Pattern.compile("(\\d{2}):(\\d{2}):(\\d{2}).(\\d{3})");
public static long dateParseRegExp(String period) {
Matcher matcher = pattern.matcher(period);
if (matcher.matches()) {
return Long.parseLong(matcher.group(1)) * 3600000L
+ Long.parseLong(matcher.group(2)) * 60000
+ Long.parseLong(matcher.group(3)) * 1000
+ Long.parseLong(matcher.group(4));
} else {
throw new IllegalArgumentException("Invalid format " + period);
}
}
However, this parsing is quite lenient and would accept 99:99:99.999 and just let the values overflow. This could be a drawback or a feature.
Response.Write("<script> try {this.submit();} catch(e){} </script>");
if you are using GIT for control versions and in some of yours commit you added db.sqlite3, GIT will keep some references of the database, so when you execute 'python manage.py migrate', this reference will be reflected on the new database. I recommend to execute the following command:
git filter-branch --index-filter "git rm -rf --cached --ignore-unmatch 'db.sqlite3' HEAD
it worked for me :)
In Chrome, request with 'Content-Type:application/json' shows as Request PayedLoad and sends data as json object.
But request with 'Content-Type:application/x-www-form-urlencoded' shows Form Data and sends data as Key:Value Pair, so if you have array of object in one key it flats that key's value:
{ Id: 1,
name:'john',
phones:[{title:'home',number:111111,...},
{title:'office',number:22222,...}]
}
sends
{ Id: 1,
name:'john',
phones:[object object]
phones:[object object]
}
It does support input/output parameters (including RETURN
value) if you use DynamicParameters
, but in this case the simpler option is simply:
var id = connection.QuerySingle<int>( @"
INSERT INTO [MyTable] ([Stuff]) VALUES (@Stuff);
SELECT CAST(SCOPE_IDENTITY() as int)", new { Stuff = mystuff});
Note that on more recent versions of SQL Server you can use the OUTPUT
clause:
var id = connection.QuerySingle<int>( @"
INSERT INTO [MyTable] ([Stuff])
OUTPUT INSERTED.Id
VALUES (@Stuff);", new { Stuff = mystuff});
You can create it manually but the default location of application.properties is here
My answer is an improvement upon the top answer for this post that trims control characters as well as spaces (0-32 and 127 on the ASCII table).
std::isgraph
determines if a character has a graphical representation, so you can use this to alter Evan's answer to remove any character that doesn't have a graphical representation from either side of a string. The result is a much more elegant solution:
#include <algorithm>
#include <functional>
#include <string>
/**
* @brief Left Trim
*
* Trims whitespace from the left end of the provided std::string
*
* @param[out] s The std::string to trim
*
* @return The modified std::string&
*/
std::string& ltrim(std::string& s) {
s.erase(s.begin(), std::find_if(s.begin(), s.end(),
std::ptr_fun<int, int>(std::isgraph)));
return s;
}
/**
* @brief Right Trim
*
* Trims whitespace from the right end of the provided std::string
*
* @param[out] s The std::string to trim
*
* @return The modified std::string&
*/
std::string& rtrim(std::string& s) {
s.erase(std::find_if(s.rbegin(), s.rend(),
std::ptr_fun<int, int>(std::isgraph)).base(), s.end());
return s;
}
/**
* @brief Trim
*
* Trims whitespace from both ends of the provided std::string
*
* @param[out] s The std::string to trim
*
* @return The modified std::string&
*/
std::string& trim(std::string& s) {
return ltrim(rtrim(s));
}
Note: Alternatively you should be able to use std::iswgraph
if you need support for wide characters, but you will also have to edit this code to enable std::wstring
manipulation, which is something that I haven't tested (see the reference page for std::basic_string
to explore this option).
int row_count = dt.Rows.Count;
I want to improve Fabio's answer and create a function which adds custom key to the URL string without reloading the page.
function insertUrlParam(key, value) {
if (history.pushState) {
let searchParams = new URLSearchParams(window.location.search);
searchParams.set(key, value);
let newurl = window.location.protocol + "//" + window.location.host + window.location.pathname + '?' + searchParams.toString();
window.history.pushState({path: newurl}, '', newurl);
}
}
The commands are adduser
and addgroup
.
Here's a template for Docker you can use in busybox environments (alpine) as well as Debian-based environments (Ubuntu, etc.):
ENV USER=docker
ENV UID=12345
ENV GID=23456
RUN adduser \
--disabled-password \
--gecos "" \
--home "$(pwd)" \
--ingroup "$USER" \
--no-create-home \
--uid "$UID" \
"$USER"
Note the following:
--disabled-password
prevents prompt for a password--gecos ""
circumvents the prompt for "Full Name" etc. on Debian-based systems--home "$(pwd)"
sets the user's home to the WORKDIR. You may not want this.--no-create-home
prevents cruft getting copied into the directory from /etc/skel
The usage description for these applications is missing the long flags present in the code for adduser and addgroup.
The following long-form flags should work both in alpine as well as debian-derivatives:
BusyBox v1.28.4 (2018-05-30 10:45:57 UTC) multi-call binary.
Usage: adduser [OPTIONS] USER [GROUP]
Create new user, or add USER to GROUP
--home DIR Home directory
--gecos GECOS GECOS field
--shell SHELL Login shell
--ingroup GRP Group (by name)
--system Create a system user
--disabled-password Don't assign a password
--no-create-home Don't create home directory
--uid UID User id
One thing to note is that if --ingroup
isn't set then the GID is assigned to match the UID. If the GID corresponding to the provided UID already exists adduser will fail.
BusyBox v1.28.4 (2018-05-30 10:45:57 UTC) multi-call binary.
Usage: addgroup [-g GID] [-S] [USER] GROUP
Add a group or add a user to a group
--gid GID Group id
--system Create a system group
I discovered all of this while trying to write my own alternative to the fixuid project for running containers as the hosts UID/GID.
My entrypoint helper script can be found on GitHub.
The intent is to prepend that script as the first argument to ENTRYPOINT
which should cause Docker to infer UID and GID from a relevant bind mount.
An environment variable "TEMPLATE" may be required to determine where the permissions should be inferred from.
(At the time of writing I don't have documentation for my script. It's still on the todo list!!)
Clearing a list in place will affect all other references of the same list.
For example, this method doesn't affect other references:
>>> a = [1, 2, 3]
>>> b = a
>>> a = []
>>> print(a)
[]
>>> print(b)
[1, 2, 3]
But this one does:
>>> a = [1, 2, 3]
>>> b = a
>>> del a[:] # equivalent to del a[0:len(a)]
>>> print(a)
[]
>>> print(b)
[]
>>> a is b
True
You could also do:
>>> a[:] = []
How about maintainability and constancy across application life cycles? Most data has a longer lifespan than the applications that make use of it. Relationships and data integrity are much too important to leave to the hope that the next dev team gets it right in the app code. If you haven't worked on a db with dirty data that doesn't respect the natural relationships, you will. The importance of data integrity will then become very clear.
I had similar issue where i had to save the contents of the dataframe to a csv file of name which i defined. df.write("csv").save("<my-path>")
was creating directory than file. So have to come up with the following solutions.
Most of the code is taken from the following dataframe-to-csv with little modifications to the logic.
def saveDfToCsv(df: DataFrame, tsvOutput: String, sep: String = ",", header: Boolean = false): Unit = {
val tmpParquetDir = "Posts.tmp.parquet"
df.repartition(1).write.
format("com.databricks.spark.csv").
option("header", header.toString).
option("delimiter", sep).
save(tmpParquetDir)
val dir = new File(tmpParquetDir)
val newFileRgex = tmpParquetDir + File.separatorChar + ".part-00000.*.csv"
val tmpTsfFile = dir.listFiles.filter(_.toPath.toString.matches(newFileRgex))(0).toString
(new File(tmpTsvFile)).renameTo(new File(tsvOutput))
dir.listFiles.foreach( f => f.delete )
dir.delete
}
Just for illustration by compare and contrast The code is from http://www.geeksforgeeks.org/g-fact-80/ /The code fails in gcc and passes in g++/
#include<stdio.h>
int initializer(void)
{
return 50;
}
int main()
{
int j;
for (j=0;j<10;j++)
{
static int i = initializer();
/*The variable i is only initialized to one*/
printf(" value of i = %d ", i);
i++;
}
return 0;
}
For anyone looking to do something similar using a reader with the stored procedure, note that the reader must be closed to retrieve the output value.
using (SqlConnection conn = new SqlConnection())
{
SqlCommand cmd = new SqlCommand("sproc", conn);
cmd.CommandType = CommandType.StoredProcedure;
// add parameters
SqlParameter outputParam = cmd.Parameters.Add("@ID", SqlDbType.Int);
outputParam.Direction = ParameterDirection.Output;
conn.Open();
using(IDataReader reader = cmd.ExecuteReader())
{
while(reader.Read())
{
//read in data
}
}
// reader is closed/disposed after exiting the using statement
int id = outputParam.Value;
}
Very late answer, but I think my answer is more straight forward for specific use cases where users want to simply insert (copy) data from table A into table B:
INSERT INTO table_b (col1, col2, col3, col4, col5, col6)
SELECT col1, 'str_val', int_val, col4, col5, col6
FROM table_a
Sometimes if the ports are not freed even after attempting shutdown.bat what @BalusC suggested,you can kill the javaw process. Do following steps :
Enter command ps. You may see a image as follows :
See the process number of process "javaw".The process number is the rightmost number in the columns, I have highlighted in the image process number of javaw for example.
Enter command kill . javaw is killed and now you must be able to run the program.
Not only you can add a path, but you can add git diff --relative
to get result relative to that folder.
git -C a/folder diff --relative
And with Git 2.28 (Q3 2020), the commands in the "diff
" family learned to honor the "diff.relative
" configuration variable.
See commit c28ded8 (22 May 2020) by Laurent Arnoud (spk
).
(Merged by Junio C Hamano -- gitster
-- in commit e34df9a, 02 Jun 2020)
diff
: add config optionrelative
Signed-off-by: Laurent Arnoud
Acked-by: Ðoàn Tr?n Công DanhThe
diff.relative
boolean option set totrue
shows only changes in the current directory/value specified by thepath
argument of therelative
option and shows pathnames relative to the aforementioned directory.Teach
--no-relative
to override earlier--relative
Add for git-format-patch(1) options documentation
--relative
and--no-relative
The documentation now includes:
diff.relative
:If set to '
true
', 'git diff
' does not show changes outside of the directory and show pathnames relative to the current directory.
Does your script reference /bin/bash
or /bin/sh
in its hash bang line? The default system shell in Ubuntu is dash, not bash, so if you have #!/bin/sh
then your script will be using a different shell than you expect. Dash does not have the <<<
redirection operator.
SELECT 'ColName1', 'ColName2', 'ColName3' UNION ALL SELECT ColName1, ColName2, ColName3 FROM YourTable INTO OUTFILE 'c:\\datasheet.csv' FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"' LINES TERMINATED BY '\n'
From what I can tell, there is no way to natively show just the current branch in Git, so I have been using:
git branch | grep '*'
<script>
$(document).ready(function(){
alert('Hi');
});
</script>
I don't think that can be done RELIABLY with built in methods on the native Date object. The toLocaleString
method gets close, but if I am remembering correctly, it won't work correctly in IE < 10. If you are able to use a library for this task, MomentJS is a really amazing library; and it makes working with dates and times easy. Otherwise, I think you will have to write a basic function to give you the format that you are after.
function formatDate(date) {
var year = date.getFullYear(),
month = date.getMonth() + 1, // months are zero indexed
day = date.getDate(),
hour = date.getHours(),
minute = date.getMinutes(),
second = date.getSeconds(),
hourFormatted = hour % 12 || 12, // hour returned in 24 hour format
minuteFormatted = minute < 10 ? "0" + minute : minute,
morning = hour < 12 ? "am" : "pm";
return month + "/" + day + "/" + year + " " + hourFormatted + ":" +
minuteFormatted + morning;
}
<div style="height: 100px;"> </div>
OR
<div id="foo"/> and set the style as #foo { height: 100px; }
<div class="bar"/> and set the style as .bar{ height: 100px; }
SQL
a language for talking to the
database. It lets you select data,
mutate and create database objects
(like tables, views, etc.), change
database settings.PL-SQL
a procedural programming language (with embedded SQL) T-SQL
(procedural) extensions for SQL used
by SQL ServerYou can use any on process for dynamic path on command prompt
Process p = Runtime.getRuntime().exec("cmd.exe /c start dir ");
Process p = Runtime.getRuntime().exec("cmd.exe /c start cd \"E:\\rakhee\\Obligation Extractions\" && dir");
Process p = Runtime.getRuntime().exec("cmd.exe /c start cd \"E:\\oxyzen-workspace\\BrightleafDesktop\\Obligation Extractions\" && dir");
I bet you are retrieving data in non-utf8 encoding: try to put mysql_query('SET CHARACTER SET utf8')
before your SELECT
query.
When a JSF view (Facelets/JSP file) get built/restored, a JSF component tree will be produced. At that moment, the view build time, all binding
attributes are evaluated (along with id
attribtues and taghandlers like JSTL). When the JSF component needs to be created before being added to the component tree, JSF will check if the binding
attribute returns a precreated component (i.e. non-null
) and if so, then use it. If it's not precreated, then JSF will autocreate the component "the usual way" and invoke the setter behind binding
attribute with the autocreated component instance as argument.
In effects, it binds a reference of the component instance in the component tree to a scoped variable. This information is in no way visible in the generated HTML representation of the component itself. This information is in no means relevant to the generated HTML output anyway. When the form is submitted and the view is restored, the JSF component tree is just rebuilt from scratch and all binding
attributes will just be re-evaluated like described in above paragraph. After the component tree is recreated, JSF will restore the JSF view state into the component tree.
Important to know and understand is that the concrete component instances are effectively request scoped. They're newly created on every request and their properties are filled with values from JSF view state during restore view phase. So, if you bind the component to a property of a backing bean, then the backing bean should absolutely not be in a broader scope than the request scope. See also JSF 2.0 specitication chapter 3.1.5:
3.1.5 Component Bindings
...
Component bindings are often used in conjunction with JavaBeans that are dynamically instantiated via the Managed Bean Creation facility (see Section 5.8.1 “VariableResolver and the Default VariableResolver”). It is strongly recommend that application developers place managed beans that are pointed at by component binding expressions in “request” scope. This is because placing it in session or application scope would require thread-safety, since UIComponent instances depends on running inside of a single thread. There are also potentially negative impacts on memory management when placing a component binding in “session” scope.
Otherwise, component instances are shared among multiple requests, possibly resulting in "duplicate component ID" errors and "weird" behaviors because validators, converters and listeners declared in the view are re-attached to the existing component instance from previous request(s). The symptoms are clear: they are executed multiple times, one time more with each request within the same scope as the component is been bound to.
And, under heavy load (i.e. when multiple different HTTP requests (threads) access and manipulate the very same component instance at the same time), you may face sooner or later an application crash with e.g. Stuck thread at UIComponent.popComponentFromEL, or Java Threads at 100% CPU utilization using richfaces UIDataAdaptorBase and its internal HashMap, or even some "strange" IndexOutOfBoundsException
or ConcurrentModificationException
coming straight from JSF implementation source code while JSF is busy saving or restoring the view state (i.e. the stack trace indicates saveState()
or restoreState()
methods and like).
binding
on a bean property is bad practiceRegardless, using binding
this way, binding a whole component instance to a bean property, even on a request scoped bean, is in JSF 2.x a rather rare use case and generally not the best practice. It indicates a design smell. You normally declare components in the view side and bind their runtime attributes like value
, and perhaps others like styleClass
, disabled
, rendered
, etc, to normal bean properties. Then, you just manipulate exactly that bean property you want instead of grabbing the whole component and calling the setter method associated with the attribute.
In cases when a component needs to be "dynamically built" based on a static model, better is to use view build time tags like JSTL, if necessary in a tag file, instead of createComponent()
, new SomeComponent()
, getChildren().add()
and what not. See also How to refactor snippet of old JSP to some JSF equivalent?
Or, if a component needs to be "dynamically rendered" based on a dynamic model, then just use an iterator component (<ui:repeat>
, <h:dataTable>
, etc). See also How to dynamically add JSF components.
Composite components is a completely different story. It's completely legit to bind components inside a <cc:implementation>
to the backing component (i.e. the component identified by <cc:interface componentType>
. See also a.o. Split java.util.Date over two h:inputText fields representing hour and minute with f:convertDateTime and How to implement a dynamic list with a JSF 2.0 Composite Component?
binding
in local scopeHowever, sometimes you'd like to know about the state of a different component from inside a particular component, more than often in use cases related to action/value dependent validation. For that, the binding
attribute can be used, but not in combination with a bean property. You can just specify an in the local EL scope unique variable name in the binding
attribute like so binding="#{foo}"
and the component is during render response elsewhere in the same view directly as UIComponent
reference available by #{foo}
. Here are several related questions where such a solution is been used in the answer:
Use an EL expression to pass a component ID to a composite component in JSF
(and that's only from the last month...)
It mostly depends on how big n
is.
If n==0
, nothing beats option#1 :)
If n is very large, toArray(new String[n])
is faster.
Stuff like 'raises exception' and 'halts execution' might be true for most compilers, but not for all. (BTW, are there assert statements that really throw exceptions?)
Here's an interesting, slightly different meaning of assert used by c6x and other TI compilers: upon seeing certain assert statements, these compilers use the information in that statement to perform certain optimizations. Wicked.
Example in C:
int dot_product(short *x, short *y, short z)
{
int sum = 0
int i;
assert( ( (int)(x) & 0x3 ) == 0 );
assert( ( (int)(y) & 0x3 ) == 0 );
for( i = 0 ; i < z ; ++i )
sum += x[ i ] * y[ i ];
return sum;
}
This tells de compiler the arrays are aligned on 32-bits boundaries, so the compiler can generate specific instructions made for that kind of alignment.