I had to do the same thing that @Luxspes did above..and I am using Spring 4.2.6. Spent quite some time figuring why is ByteArrayResource getting transferred from client to server, but the server is not recognizing it.
ByteArrayResource contentsAsResource = new ByteArrayResource(byteArr){
@Override
public String getFilename(){
return filename;
}
};
The Best way is do not use any pairing code.
Instead of onClick
go to other function or other class where You create the socket using UUID.
Android automatically pops up for pairing if already not paired.
or see this link for better understanding
Below is code for the same:
private OnItemClickListener mDeviceClickListener = new OnItemClickListener() {
public void onItemClick(AdapterView<?> av, View v, int arg2, long arg3) {
// Cancel discovery because it's costly and we're about to connect
mBtAdapter.cancelDiscovery();
// Get the device MAC address, which is the last 17 chars in the View
String info = ((TextView) v).getText().toString();
String address = info.substring(info.length() - 17);
// Create the result Intent and include the MAC address
Intent intent = new Intent();
intent.putExtra(EXTRA_DEVICE_ADDRESS, address);
// Set result and finish this Activity
setResult(Activity.RESULT_OK, intent);
// **add this 2 line code**
Intent myIntent = new Intent(view.getContext(), Connect.class);
startActivityForResult(myIntent, 0);
finish();
}
};
Connect.java file is :
public class Connect extends Activity {
private static final String TAG = "zeoconnect";
private ByteBuffer localByteBuffer;
private InputStream in;
byte[] arrayOfByte = new byte[4096];
int bytes;
public BluetoothDevice mDevice;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.connect);
try {
setup();
} catch (ZeoMessageException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ZeoMessageParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
private void setup() throws ZeoMessageException, ZeoMessageParseException {
// TODO Auto-generated method stub
getApplicationContext().registerReceiver(receiver,
new IntentFilter(BluetoothDevice.ACTION_ACL_CONNECTED));
getApplicationContext().registerReceiver(receiver,
new IntentFilter(BluetoothDevice.ACTION_ACL_DISCONNECTED));
BluetoothDevice zee = BluetoothAdapter.getDefaultAdapter().
getRemoteDevice("**:**:**:**:**:**");// add device mac adress
try {
sock = zee.createRfcommSocketToServiceRecord(
UUID.fromString("*******************")); // use unique UUID
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
Log.d(TAG, "++++ Connecting");
try {
sock.connect();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
Log.d(TAG, "++++ Connected");
try {
in = sock.getInputStream();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
Log.d(TAG, "++++ Listening...");
while (true) {
try {
bytes = in.read(arrayOfByte);
Log.d(TAG, "++++ Read "+ bytes +" bytes");
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
Log.d(TAG, "++++ Done: test()");
}}
private static final LogBroadcastReceiver receiver = new LogBroadcastReceiver();
public static class LogBroadcastReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context paramAnonymousContext, Intent paramAnonymousIntent) {
Log.d("ZeoReceiver", paramAnonymousIntent.toString());
Bundle extras = paramAnonymousIntent.getExtras();
for (String k : extras.keySet()) {
Log.d("ZeoReceiver", " Extra: "+ extras.get(k).toString());
}
}
};
private BluetoothSocket sock;
@Override
public void onDestroy() {
getApplicationContext().unregisterReceiver(receiver);
if (sock != null) {
try {
sock.close();
} catch (IOException e) {
e.printStackTrace();
}
}
super.onDestroy();
}
}
You specifically asked for "extension or functionality in Chrome and/or Firefox", which the answers you have already received provide, but I do like the simplicity of oezi's answer to the closed question "how to send a post request with a web browser" for simple parameters. oezi says:
with a form, just set method
to "post"
<form action="blah.php" method="post">
<input type="text" name="data" value="mydata" />
<input type="submit" />
</form>
I.e. build yourself a very simple page to test the post actions.
i have used this code given below
CustomerType = ((EnumCustomerType)(cus.CustomerType)).ToString()
.box{
background-image: url("https://i.stack.imgur.com/N39wV.jpg");
width: 350px;
padding: 10px;
}
/*begin first box*/
.first{
width: 300px;
height: 100px;
margin: 10px;
border-width: 0 2px 0 2px;
border-color: #333;
border-style: solid;
position: relative;
}
.first span {
position: absolute;
display: flex;
right: 0;
left: 0;
align-items: center;
}
.first .foo{
top: -8px;
}
.first .bar{
bottom: -8.5px;
}
.first span:before{
margin-right: 15px;
}
.first span:after {
margin-left: 15px;
}
.first span:before , .first span:after {
content: ' ';
height: 2px;
background: #333;
display: block;
width: 50%;
}
/*begin second box*/
.second{
width: 300px;
height: 100px;
margin: 10px;
border-width: 2px 0 2px 0;
border-color: #333;
border-style: solid;
position: relative;
}
.second span {
position: absolute;
top: 0;
bottom: 0;
display: flex;
flex-direction: column;
align-items: center;
}
.second .foo{
left: -15px;
}
.second .bar{
right: -15.5px;
}
.second span:before{
margin-bottom: 15px;
}
.second span:after {
margin-top: 15px;
}
.second span:before , .second span:after {
content: ' ';
width: 2px;
background: #333;
display: block;
height: 50%;
}
_x000D_
<div class="box">
<div class="first">
<span class="foo">FOO</span>
<span class="bar">BAR</span>
</div>
<br>
<div class="second">
<span class="foo">FOO</span>
<span class="bar">BAR</span>
</div>
</div>
_x000D_
update_attribute
This method update single attribute of object without invoking model based validation.
obj = Model.find_by_id(params[:id])
obj.update_attribute :language, “java”
update_attributes
This method update multiple attribute of single object and also pass model based validation.
attributes = {:name => “BalaChandar”, :age => 23}
obj = Model.find_by_id(params[:id])
obj.update_attributes(attributes)
Hope this answer will clear out when to use what method of active record.
A comprehensive list:
CodeRush, by DevExpress. (Considered the main alternative) Either this or ReSharper is the way to go. You cannot go wrong with either. Both have their fans, both are powerful, both have talented teams constantly improving them. We have all benefited from the competition between these two. I won't repeat the many good discussions/comparisons about them that can be found on Stack Overflow and elsewhere. 1
JustCode, by Telerik. This is new, still with kinks, but initial reports are positive. An advantage could be liscensing with other Telerik products and integration with them. 1
Many of the new Visual Studio 2010 features. See what's been added vs. what you need, it could be that the core install takes care of what you are interested in now.
Visual Assist X, More than 50 features make Visual Assist X an incredible productivity tool. Pick a category and learn more, or download a free trial and discover them all. 2
VSCommands, VSCommands provides code navigation and generation improvements which will make your everyday coding tasks blazing fast and, together with tens of essential IDE enhancements, it will take your productivity to another level. VSCommands comes in two flavours: Lite (free) and Pro (paid). 3
BrockSoft VSAid, VSAid (Visual Studio Aid) is a Microsoft Visual Studio add-in available, at no cost, for both personal and commercial use. Primarily aimed at Visual C++ developers (though useful for any Visual Studio project or solution), VSAid adds a new toolbar to the IDE which adds productivity-enhancing features such as being able to find and open project files quickly and cycle through related files at the click of a mouse button (or the stroke of a key!). 4
If you look at the source code for a StringBuilder or StringBuffer the setLength() call just resets an index value for the character array. IMHO using the setLength method will always be faster than a new allocation. They should have named the method 'clear' or 'reset' so it would be clearer.
I guess the above methods have changed after the release, check this link out
https://github.com/valor-software/ng2-bootstrap/blob/development/docs/getting-started/ng-cli.md
initiate project
npm i -g angular-cli
ng new my-app
cd my-app
ng serve
npm install --save @ng-bootstrap/ng-bootstrap
install ng-bootstrap and bootstrap
npm install ng2-bootstrap bootstrap --save
open src/app/app.module.ts and add
import { AlertModule } from 'ng2-bootstrap/ng2-bootstrap';
...
@NgModule({
...
imports: [AlertModule, ... ],
...
})
open angular-cli.json and insert a new entry into the styles array
"styles": [
"styles.css",
"../node_modules/bootstrap/dist/css/bootstrap.min.css"
],
open src/app/app.component.html and test all works by adding
<alert type="success">hello</alert>
In OSX, you can set the classpath from scratch like this:
export CLASSPATH=/path/to/some.jar:/path/to/some/other.jar
Or you can add to the existing classpath like this:
export CLASSPATH=$CLASSPATH:/path/to/some.jar:/path/to/some/other.jar
This is answering your exact question, I'm not saying it's the right or wrong thing to do; I'll leave that for others to comment upon.
Assuming your DateColumn formatted 3312018.0 should be converted to 03/31/2018 as a string. And, some records are missing or 0.
df['DateColumn'] = df['DateColumn'].astype(int)
df['DateColumn'] = df['DateColumn'].astype(str)
df['DateColumn'] = df['DateColumn'].apply(lambda x: x.zfill(8))
df.loc[df['DateColumn'] == '00000000','DateColumn'] = '01011980'
df['DateColumn'] = pd.to_datetime(df['DateColumn'], format="%m%d%Y")
df['DateColumn'] = df['DateColumn'].apply(lambda x: x.strftime('%m/%d/%Y'))
Laravel >= 5.3 method lists() is deprecated use pluck()
$items = Items::pluck('name', 'id');
{!! Form::select('items', $items, null, ['class' => 'some_css_class']) !!}
This will give you a select box with same select options as id numbers in DB
for example if you have this in your DB table:
id name
1 item1
2 item2
3 item3
4 item4
in select box it will be like this
<select>
<option value="1">item1</option>
<option value="2">item2</option>
<option value="3">item3</option>
<option value="4">item4</option>
</select>
I found out that pluck now returns a collection, and you need to add ->toArray() at the end of pluck...so like this: pluck('name', 'id')->toArray();
There it is : ternary operator got added to angular parser in 1.1.5! see the changelog
Here is a fiddle showing new ternary operator used in ng-class directive.
ng-class="boolForTernary ? 'blue' : 'red'"
First login to MySQL using
mysql -u username -p
Command to Display the size of a single Database along with its table in MB.
SELECT table_name AS "Table",
ROUND(((data_length + index_length) / 1024 / 1024), 2) AS "Size (MB)"
FROM information_schema.TABLES
WHERE table_schema = "database_name"
ORDER BY (data_length + index_length) DESC;
Change database_name to your Database
Command to Display all the Databases with its size in MB.
SELECT table_schema AS "Database",
ROUND(SUM(data_length + index_length) / 1024 / 1024, 2) AS "Size (MB)"
FROM information_schema.TABLES
GROUP BY table_schema;
I had this error.
I have a main python script which calls in functions from another, 2nd, python script.
At the end of the first script I had a comment block designated with ''' '''
.
I was getting this error because of this commenting code block.
I repeated the error multiple times once I found it to ensure this was the error, & it was.
I am still unsure why.
Unless the variable k
is defined, that's probably what's causing your trouble. Something like this will do what you want:
var new_tweets = { };
new_tweets.k = { };
new_tweets.k.tweet_id = 98745521;
new_tweets.k.user_id = 54875;
new_tweets.k.data = { };
new_tweets.k.data.in_reply_to_screen_name = 'other_user';
new_tweets.k.data.text = 'tweet text';
// Will create the JSON string you're looking for.
var json = JSON.stringify(new_tweets);
You can also do it all at once:
var new_tweets = {
k: {
tweet_id: 98745521,
user_id: 54875,
data: {
in_reply_to_screen_name: 'other_user',
text: 'tweet_text'
}
}
}
I just finished a sample app that does this in a pretty basic, but clear way. It uses mongoose with mongodb to store users and passport for auth management.
A solution that I found recently is to combine the out-of-source build concept with a Makefile wrapper.
In my top-level CMakeLists.txt file, I include the following to prevent in-source builds:
if ( ${CMAKE_SOURCE_DIR} STREQUAL ${CMAKE_BINARY_DIR} )
message( FATAL_ERROR "In-source builds not allowed. Please make a new directory (called a build directory) and run CMake from there. You may need to remove CMakeCache.txt." )
endif()
Then, I create a top-level Makefile, and include the following:
# -----------------------------------------------------------------------------
# CMake project wrapper Makefile ----------------------------------------------
# -----------------------------------------------------------------------------
SHELL := /bin/bash
RM := rm -rf
MKDIR := mkdir -p
all: ./build/Makefile
@ $(MAKE) -C build
./build/Makefile:
@ ($(MKDIR) build > /dev/null)
@ (cd build > /dev/null 2>&1 && cmake ..)
distclean:
@ ($(MKDIR) build > /dev/null)
@ (cd build > /dev/null 2>&1 && cmake .. > /dev/null 2>&1)
@- $(MAKE) --silent -C build clean || true
@- $(RM) ./build/Makefile
@- $(RM) ./build/src
@- $(RM) ./build/test
@- $(RM) ./build/CMake*
@- $(RM) ./build/cmake.*
@- $(RM) ./build/*.cmake
@- $(RM) ./build/*.txt
ifeq ($(findstring distclean,$(MAKECMDGOALS)),)
$(MAKECMDGOALS): ./build/Makefile
@ $(MAKE) -C build $(MAKECMDGOALS)
endif
The default target all
is called by typing make
, and invokes the target ./build/Makefile
.
The first thing the target ./build/Makefile
does is to create the build
directory using $(MKDIR)
, which is a variable for mkdir -p
. The directory build
is where we will perform our out-of-source build. We provide the argument -p
to ensure that mkdir
does not scream at us for trying to create a directory that may already exist.
The second thing the target ./build/Makefile
does is to change directories to the build
directory and invoke cmake
.
Back to the all
target, we invoke $(MAKE) -C build
, where $(MAKE)
is a Makefile variable automatically generated for make
. make -C
changes the directory before doing anything. Therefore, using $(MAKE) -C build
is equivalent to doing cd build; make
.
To summarize, calling this Makefile wrapper with make all
or make
is equivalent to doing:
mkdir build
cd build
cmake ..
make
The target distclean
invokes cmake ..
, then make -C build clean
, and finally, removes all contents from the build
directory. I believe this is exactly what you requested in your question.
The last piece of the Makefile evaluates if the user-provided target is or is not distclean
. If not, it will change directories to build
before invoking it. This is very powerful because the user can type, for example, make clean
, and the Makefile will transform that into an equivalent of cd build; make clean
.
In conclusion, this Makefile wrapper, in combination with a mandatory out-of-source build CMake configuration, make it so that the user never has to interact with the command cmake
. This solution also provides an elegant method to remove all CMake output files from the build
directory.
P.S. In the Makefile, we use the prefix @
to suppress the output from a shell command, and the prefix @-
to ignore errors from a shell command. When using rm
as part of the distclean
target, the command will return an error if the files do not exist (they may have been deleted already using the command line with rm -rf build
, or they were never generated in the first place). This return error will force our Makefile to exit. We use the prefix @-
to prevent that. It is acceptable if a file was removed already; we want our Makefile to keep going and remove the rest.
Another thing to note: This Makefile may not work if you use a variable number of CMake variables to build your project, for example, cmake .. -DSOMEBUILDSUSETHIS:STRING="foo" -DSOMEOTHERBUILDSUSETHISTOO:STRING="bar"
. This Makefile assumes you invoke CMake in a consistent way, either by typing cmake ..
or by providing cmake
a consistent number of arguments (that you can include in your Makefile).
Finally, credit where credit is due. This Makefile wrapper was adapted from the Makefile provided by the C++ Application Project Template.
Go to: C:\Users\ [youruserdirectory] \bash_profile
In your bash_profile file type - alias desk='cd " [DIRECTORY LOCATION] "'
Refresh your User directory where the bash_profile file exists then reopen your CMD or Git Bash window
Type in desk to see if you get to the Desktop location or the location you want in the "DIRECTORY LOCATION" area above
Note: [ desk ] can be what ever name that you choose and should get you to the location you want to get to when typed in the CMD window.
Make sure the scp command is available on both sides - both on the client and on the server.
If this is Fedora or Red Hat Enterprise Linux and clones (CentOS), make sure this package is installed:
yum -y install openssh-clients
If you work with Debian or Ubuntu and clones, install this package:
apt-get install openssh-client
Again, you need to do this both on the server and the client, otherwise you can encounter "weird" error messages on your client: scp: command not found
or similar although you have it locally. This already confused thousands of people, I guess :)
They are not managed, but measured and possibly limited (see getrlimit
system call, also on getrlimit(2)).
RSS means resident set size (the part of your virtual address space sitting in RAM).
You can query the virtual address space of process 1234 using proc(5) with cat /proc/1234/maps
and its status (including memory consumption) thru cat /proc/1234/status
Apple recommends against relying on the fileExistAtPath: method. It's often better to just try to open a file and deal with the error if the file does not exist.
NSFileManager Class Reference
Note: Attempting to predicate behavior based on the current state of the file system or a particular file on the file system is not recommended. Doing so can cause odd behavior or race conditions. It's far better to attempt an operation (such as loading a file or creating a directory), check for errors, and handle those errors gracefully than it is to try to figure out ahead of time whether the operation will succeed. For more information on file system race conditions, see “Race Conditions and Secure File Operations” in Secure Coding Guide.
Source: Apple Developer API Reference
From the secure coding guide.
To prevent this, programs often check to make sure a temporary file with a specific name does not already exist in the target directory. If such a file exists, the application deletes it or chooses a new name for the temporary file to avoid conflict. If the file does not exist, the application opens the file for writing, because the system routine that opens a file for writing automatically creates a new file if none exists. An attacker, by continuously running a program that creates a new temporary file with the appropriate name, can (with a little persistence and some luck) create the file in the gap between when the application checked to make sure the temporary file didn’t exist and when it opens it for writing. The application then opens the attacker’s file and writes to it (remember, the system routine opens an existing file if there is one, and creates a new file only if there is no existing file). The attacker’s file might have different access permissions than the application’s temporary file, so the attacker can then read the contents. Alternatively, the attacker might have the file already open. The attacker could replace the file with a hard link or symbolic link to some other file (either one owned by the attacker or an existing system file). For example, the attacker could replace the file with a symbolic link to the system password file, so that after the attack, the system passwords have been corrupted to the point that no one, including the system administrator, can log in.
Unfortunately, this is not possible. Per the spec:
Generated content does not alter the document tree. In particular, it is not fed back to the document language processor (e.g., for reparsing).
In other words, for string values this means the value is always treated literally. It is never interpreted as markup, regardless of the document language in use.
As an example, using the given CSS with the following HTML:
<h1 class="header">Title</h1>
... will result in the following output:
Old question, but my solution is a bit different.
I was writing a single page web app that was constantly making ajax calls triggered by the user, and to make it even more difficult it required libraries that used methods other than jquery (like dojo, native xhr, etc). I wrote a plugin for one of my own libraries to cache ajax requests as efficiently as possible in a way that would work in all major browsers, regardless of which libraries were being used to make the ajax call.
The solution uses jSQL (written by me - a client-side persistent SQL implementation written in javascript which uses indexeddb and other dom storage methods), and is bundled with another library called XHRCreep (written by me) which is a complete re-write of the native XHR object.
To implement all you need to do is include the plugin in your page, which is here.
There are two options:
jSQL.xhrCache.max_time = 60;
Set the maximum age in minutes. any cached responses that are older than this are re-requested. Default is 1 hour.
jSQL.xhrCache.logging = true;
When set to true, mock XHR calls will be shown in the console for debugging.
You can clear the cache on any given page via
jSQL.tables = {}; jSQL.persist();
There is no Date
DataType.
However you can use DateTime.Date
to get just the Date.
E.G.
DateTime date = DateTime.Now.Date;
This article by Atul Gupta has sample code that covers several scenarios:
I recently encountered this issue, and here is the solution I came up with
final int LENGTH = 10;
String test = "Here is a very long description, it is going to be past 10";
Map<Integer,StringBuilder> stringBuilderMap = new HashMap<>();
for ( int i = 0; i < test.length(); i++ ) {
int position = i / LENGTH; // i<10 then 0, 10<=i<19 then 1, 20<=i<30 then 2, etc.
StringBuilder currentSb = stringBuilderMap.computeIfAbsent( position, pos -> new StringBuilder() ); // find sb, or create one if not present
currentSb.append( test.charAt( i ) ); // add the current char to our sb
}
List<String> comments = stringBuilderMap.entrySet().stream()
.sorted( Comparator.comparing( Map.Entry::getKey ) )
.map( entrySet -> entrySet.getValue().toString() )
.collect( Collectors.toList() );
//done
// here you can see the data
comments.forEach( cmt -> System.out.println( String.format( "'%s' ... length= %d", cmt, cmt.length() ) ) );
// PRINTS:
// 'Here is a ' ... length= 10
// 'very long ' ... length= 10
// 'descriptio' ... length= 10
// 'n, it is g' ... length= 10
// 'oing to be' ... length= 10
// ' past 10' ... length= 8
// make sure they are equal
String joinedString = String.join( "", comments );
System.out.println( "\nOriginal strings are equal " + joinedString.equals( test ) );
// PRINTS: Original strings are equal true
There is a quick method to set the syntax:
Ctrl
+Shift
+P
,then type in the input box
ss + (which type you want set)
eg: ss html +Enter
and ss means "set syntax"
it is really quicker than check in the menu's checkbox.
This oughta do it.
DateTimePicker1.Value = DateTime.Now.AddDays(-1).Date;
In my case I have update compile SDK and build SDK version to 30 and added
requestLegacyPermission=true
in android manifest file, as I was accessing the storage for reading and writing. later when I edited the compile SDK and build SDK version and get back to version 26 then I forgot to remove
requestLegacyPermission=true
in Manifest file.
Reason:
requestLegacyPermission was introduced in Android 10 so that's the reason Manifest was not recognizing this as I updated Compile SDK and Build SDK to 26.
If you are Struggling with addToBackStack() & popBackStack() then simply use
FragmentTransaction ft =getSupportFragmentManager().beginTransaction();
ft.replace(R.id.content_frame, new HomeFragment(), "Home");
ft.commit();`
In your Activity In OnBackPressed() find out fargment by tag and then do your stuff
Fragment home = getSupportFragmentManager().findFragmentByTag("Home");
if (home instanceof HomeFragment && home.isVisible()) {
// do you stuff
}
For more Information https://github.com/DattaHujare/NavigationDrawer I never use addToBackStack() for handling fragment.
The above query returns the list of Object[]. So if you want to get the u.name and s.something from the list then you need to iterate and cast that values for the corresponding classes.
A beautiful gem in this closed question:
The "oneliner way", altering neither of the input dicts, is
basket = dict(basket_one, **basket_two)
Learn what **basket_two
(the **
) means here.
In case of conflict, the items from basket_two
will override the ones from basket_one
. As one-liners go, this is pretty readable and transparent, and I have no compunction against using it any time a dict that's a mix of two others comes in handy (any reader who has trouble understanding it will in fact be very well served by the way this prompts him or her towards learning about dict
and the **
form;-). So, for example, uses like:
x = mungesomedict(dict(adict, **anotherdict))
are reasonably frequent occurrences in my code.
Originally submitted by Alex Martelli
Note: In Python 3, this will only work if every key in basket_two is a string
.
To expand upon Mr. Eels comment, you can do it like this:
File file = new File("C:\\A.txt");
FileWriter writer;
try {
writer = new FileWriter(file, true);
PrintWriter printer = new PrintWriter(writer);
printer.append("Sue");
printer.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Don't say we ain't good to ya!
Both of
int main(int argc, char *argv[]);
int main();
are legal definitions of the entry point for a C or C++ program. Stroustrup: C++ Style and Technique FAQ details some of the variations that are possible or legal for your main function.
If you are using requests
module, an alternative option is to write an auth class, as discussed in "New Forms of Authentication":
import requests
class BearerAuth(requests.auth.AuthBase):
def __init__(self, token):
self.token = token
def __call__(self, r):
r.headers["authorization"] = "Bearer " + self.token
return r
and then can you send requests like this
response = requests.get('https://www.example.com/', auth=BearerAuth('3pVzwec1Gs1m'))
which allows you to use the same auth
argument just like basic auth, and may help you in certain situations.
Here's an ES6 version of the answer provided by 7stud.
const sel = document.createElement('select');
sel.name = 'drop1';
sel.id = 'Select1';
const cars = [
"Volvo",
"Saab",
"Mercedes",
"Audi",
];
const options = cars.map(car => {
const value = car.toLowerCase();
return `<option value="${value}">${car}</option>`;
});
sel.innerHTML = options;
window.onload = () => document.body.appendChild(sel);
I would either:
ssh
from the command line and accept the public key (the host will be added to ~/.ssh/known_hosts
and everything should then work fine from Jsch) -OR-Configure JSch to not use "StrictHostKeyChecking" (this introduces insecurities and should only be used for testing purposes), using the following code:
java.util.Properties config = new java.util.Properties();
config.put("StrictHostKeyChecking", "no");
session.setConfig(config);
Option #1 (adding the host to the ~/.ssh/known_hosts
file) has my preference.
A date-time object is supposed to store the information about the date, time, timezone etc., not about the formatting. You can format a date-time object into a String
with the pattern of your choice using date-time formatting API.
java.time.format
e.g. java.time.format.DateTimeFormatter
, java.time.format.DateTimeFormatterBuilder
etc.java.text
e.g. java.text.SimpleDateFormat
, java.text.DateFormat
etc.Demo using modern API:
import java.time.LocalDate;
import java.time.Month;
import java.time.ZoneId;
import java.time.ZonedDateTime;
import java.time.format.DateTimeFormatter;
import java.util.Locale;
public class Main {
public static void main(String[] args) {
ZonedDateTime zdt = ZonedDateTime.of(LocalDate.of(2012, Month.DECEMBER, 1).atStartOfDay(),
ZoneId.of("Europe/London"));
// Default format returned by Date#toString
System.out.println(zdt);
// Custom format
DateTimeFormatter dtf = DateTimeFormatter.ofPattern("yyyy-MM-dd", Locale.ENGLISH);
String formattedDate = dtf.format(zdt);
System.out.println(formattedDate);
}
}
Output:
2012-12-01T00:00Z[Europe/London]
2012-12-01
Learn about the modern date-time API from Trail: Date Time.
Demo using legacy API:
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.Locale;
import java.util.TimeZone;
public class Main {
public static void main(String[] args) {
Calendar calendar = Calendar.getInstance(TimeZone.getTimeZone("GMT"));
calendar.setTimeInMillis(0);
calendar.set(Calendar.YEAR, 2012);
calendar.set(Calendar.MONTH, 11);
calendar.set(Calendar.DAY_OF_MONTH, 1);
Date date = calendar.getTime();
// Default format returned by Date#toString
System.out.println(date);
// Custom format
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd", Locale.ENGLISH);
String formattedDate = sdf.format(date);
System.out.println(formattedDate);
}
}
Output:
Sat Dec 01 00:00:00 GMT 2012
2012-12-01
Some more important points:
java.util.Date
object is not a real date-time object like the modern date-time types; rather, it represents the milliseconds from the Epoch of January 1, 1970
. When you print an object of java.util.Date
, its toString
method returns the date-time calculated from this milliseconds value. Since java.util.Date
does not have timezone information, it applies the timezone of your JVM and displays the same. If you need to print the date-time in a different timezone, you will need to set the timezone to SimpleDateFomrat
and obtain the formatted string from it.java.util
and their formatting API, SimpleDateFormat
are outdated and error-prone. It is recommended to stop using them completely and switch to the modern date-time API.
You can use a BehaviorSubject
for communicating between different components throughout the app. You can define a data sharing service containing the BehaviorSubject
to which you can subscribe and emit changes.
Define a data sharing service
import { Injectable } from '@angular/core';
import { BehaviorSubject } from 'rxjs';
@Injectable()
export class DataSharingService {
public isUserLoggedIn: BehaviorSubject<boolean> = new BehaviorSubject<boolean>(false);
}
Add the DataSharingService
in your AppModule
providers entry.
Next, import the DataSharingService
in your <app-header>
and in the component where you perform the sign-in operation. In <app-header>
subscribe to the changes to isUserLoggedIn
subject:
import { DataSharingService } from './data-sharing.service';
export class AppHeaderComponent {
// Define a variable to use for showing/hiding the Login button
isUserLoggedIn: boolean;
constructor(private dataSharingService: DataSharingService) {
// Subscribe here, this will automatically update
// "isUserLoggedIn" whenever a change to the subject is made.
this.dataSharingService.isUserLoggedIn.subscribe( value => {
this.isUserLoggedIn = value;
});
}
}
In your <app-header>
html template, you need to add the *ngIf
condition e.g.:
<button *ngIf="!isUserLoggedIn">Login</button>
<button *ngIf="isUserLoggedIn">Sign Out</button>
Finally, you just need to emit the event once the user has logged in e.g:
someMethodThatPerformsUserLogin() {
// Some code
// .....
// After the user has logged in, emit the behavior subject changes.
this.dataSharingService.isUserLoggedIn.next(true);
}
In fact, your query is right except for the typo: your filter is excluding all records: you should change the <=
for >=
and vice versa:
qry = DBSession.query(User).filter(
and_(User.birthday <= '1988-01-17', User.birthday >= '1985-01-17'))
# or same:
qry = DBSession.query(User).filter(User.birthday <= '1988-01-17').\
filter(User.birthday >= '1985-01-17')
Also you can use between
:
qry = DBSession.query(User).filter(User.birthday.between('1985-01-17', '1988-01-17'))
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.concurrent.TimeUnit;
public class MyTest {
public static void main(String[] args) {
long seconds = 360000;
long days = TimeUnit.SECONDS.toDays(seconds);
long hours = TimeUnit.SECONDS.toHours(seconds - TimeUnit.DAYS.toSeconds(days));
System.out.println("days: " + days);
System.out.println("hours: " + hours);
}
}
What's the best way to emulate the readonly attribute for a select tag, and still get the POST data?
Just make it an input/text field and add the 'readonly' attribute to it. If the select is effectively 'disabled', then you can't change the value anyway, so you don't need the select tag, and you can simply display the "selected" value as a readonly text input. For most UI purposes I think this should suffice.
One common use is for template-typedef workaround classes like following:
template <class TObj>
class MyLibrariesSmartPointer
{
MyLibrariesSmartPointer();
public:
typedef smart_ptr<TObj> type;
};
Obviously a public non-implemented constructor would work aswell, but a private construtor raises a compile time error instead of a link time error, if anyone tries to instatiate MyLibrariesSmartPointer<SomeType>
instead of MyLibrariesSmartPointer<SomeType>::type
, which is desireable.
In my experience, it's just a matter of iteration. Put your data and code wherever you think they go. Chances are, you'll be wrong anyway. But once you get a better idea of exactly how things are going to shape up, you're in a much better position to make these kinds of guesses.
As far as extension sources, we have a Code directory under trunk that contains a directory for python and a directory for various other languages. Personally, I'm more inclined to try putting any extension code into its own repository next time around.
With that said, I go back to my initial point: don't make too big a deal out of it. Put it somewhere that seems to work for you. If you find something that doesn't work, it can (and should) be changed.
Add the following as the first code:
Properties prop = new Properties();
prop.setProperty("log4j.rootLogger", "WARN");
PropertyConfigurator.configure(prop);
TEXT is a data-type for text based input. On the other hand, you have BLOB and CLOB which are more suitable for data storage (images, etc) due to their larger capacity limits (4GB for example).
As for the difference between BLOB and CLOB, I believe CLOB has character encoding associated with it, which implies it can be suited well for very large amounts of text.
BLOB and CLOB data can take a long time to retrieve, relative to how quick data from a TEXT field can be retrieved. So, use only what you need.
if you know the id of the inputs you only need to use this:
var value = $("#inputID").val();
In order to make the existing primary key as auto_increment
, you may use:
ALTER TABLE table_name MODIFY id INT AUTO_INCREMENT;
Additionally to the answer of @tkruse and @Yishai:
I do this way to conditionally skip test methods especially for Parameterized
tests, if a test method should only run for some test data records.
public class MyTest {
// get current test method
@Rule public TestName testName = new TestName();
@Before
public void setUp() {
org.junit.Assume.assumeTrue(new Function<String, Boolean>() {
@Override
public Boolean apply(String testMethod) {
if (testMethod.startsWith("testMyMethod")) {
return <some condition>;
}
return true;
}
}.apply(testName.getMethodName()));
... continue setup ...
}
}
check your casing, the name is typically stored in upper case
SELECT * FROM all_source WHERE name = 'DAILY_UPDATE' ORDER BY TYPE, LINE;
You have to copy the bits over a new image with the target resolution, like this:
using (Bitmap bitmap = (Bitmap)Image.FromFile("file.jpg"))
{
using (Bitmap newBitmap = new Bitmap(bitmap))
{
newBitmap.SetResolution(300, 300);
newBitmap.Save("file300.jpg", ImageFormat.Jpeg);
}
}
Update (2018-01-06): This answer is obsolete. Modern versions of PyCharm provide Paths via Settings ? Project Interpreter ? ? ? Show All ? Show paths button.
PyCharm Professional Edition has the Paths
tab in Python Interpreters
settings, but Community Edition apparently doesn't have it.
As a workaround, you can create a symlink for your imported library under your project's root.
For example:
myproject
mypackage
__init__.py
third_party -> /some/other/directory/third_party
with BytesIO() as output:
from PIL import Image
with Image.open(filename) as img:
img.convert('RGB').save(output, 'BMP')
data = output.getvalue()[14:]
I just use this for add a image to clipboard in windows.
In modern javascript (ES6/ES2015), one should use Map data structure for dictionary. The Map data structure in ES6 lets you use arbitrary values as keys.
const map = new Map();
map.set("true", 1);
map.set("false", 0);
In you are still using ES5, the correct way to create dictionary is to create object without a prototype in the following way.
var map = Object.create(null);
map["true"]= 1;
map["false"]= 0;
There are many advantages of creating a dictionary without a prototype object. Below blogs are worth reading on this topic.
Give the path of the script, that is, path setting by cmd:
$> . c:\program file\prog.ps1
Run the entry point function of PowerShell:
For example, $> add or entry_func or main
You can actually index directly into the Attributes collection (if you are using C# not VB):
foreach (XmlNode xNode in nodeListName)
{
XmlNode parent = xNode.ParentNode;
if (parent.Attributes != null
&& parent.Attributes["split"] != null)
{
parentSplit = parent.Attributes["split"].Value;
}
}
Scrum falls under the umbrella of Agile. Agile isn't Scrum but Scrum is Agile. At least that's the way PMI sees it. They are coming out with their own certification. See Agile Exam Questions
The SELECT WITH (NOLOCK)
allows reads of uncommitted data, which is equivalent to having the READ UNCOMMITTED
isolation level set on your database. The NOLOCK
keyword allows finer grained control than setting the isolation level on the entire database.
Wikipedia has a useful article: Wikipedia: Isolation (database systems)
It is also discussed at length in other stackoverflow articles.
This is the dumbest answer to this question, but check the status of GitHub. This one got me :)
If you are looking for something very accurate, you need to use some better tool than tf-idf. Universal sentence encoder is one of the most accurate ones to find the similarity between any two pieces of text. Google provided pretrained models that you can use for your own application without a need to train from scratch anything. First, you have to install tensorflow and tensorflow-hub:
pip install tensorflow
pip install tensorflow_hub
The code below lets you convert any text to a fixed length vector representation and then you can use the dot product to find out the similarity between them
import tensorflow_hub as hub
module_url = "https://tfhub.dev/google/universal-sentence-encoder/1?tf-hub-format=compressed"
# Import the Universal Sentence Encoder's TF Hub module
embed = hub.Module(module_url)
# sample text
messages = [
# Smartphones
"My phone is not good.",
"Your cellphone looks great.",
# Weather
"Will it snow tomorrow?",
"Recently a lot of hurricanes have hit the US",
# Food and health
"An apple a day, keeps the doctors away",
"Eating strawberries is healthy",
]
similarity_input_placeholder = tf.placeholder(tf.string, shape=(None))
similarity_message_encodings = embed(similarity_input_placeholder)
with tf.Session() as session:
session.run(tf.global_variables_initializer())
session.run(tf.tables_initializer())
message_embeddings_ = session.run(similarity_message_encodings, feed_dict={similarity_input_placeholder: messages})
corr = np.inner(message_embeddings_, message_embeddings_)
print(corr)
heatmap(messages, messages, corr)
and the code for plotting:
def heatmap(x_labels, y_labels, values):
fig, ax = plt.subplots()
im = ax.imshow(values)
# We want to show all ticks...
ax.set_xticks(np.arange(len(x_labels)))
ax.set_yticks(np.arange(len(y_labels)))
# ... and label them with the respective list entries
ax.set_xticklabels(x_labels)
ax.set_yticklabels(y_labels)
# Rotate the tick labels and set their alignment.
plt.setp(ax.get_xticklabels(), rotation=45, ha="right", fontsize=10,
rotation_mode="anchor")
# Loop over data dimensions and create text annotations.
for i in range(len(y_labels)):
for j in range(len(x_labels)):
text = ax.text(j, i, "%.2f"%values[i, j],
ha="center", va="center", color="w",
fontsize=6)
fig.tight_layout()
plt.show()
as you can see the most similarity is between texts with themselves and then with their close texts in meaning.
IMPORTANT: the first time you run the code it will be slow because it needs to download the model. if you want to prevent it from downloading the model again and use the local model you have to create a folder for cache and add it to the environment variable and then after the first time running use that path:
tf_hub_cache_dir = "universal_encoder_cached/"
os.environ["TFHUB_CACHE_DIR"] = tf_hub_cache_dir
# pointing to the folder inside cache dir, it will be unique on your system
module_url = tf_hub_cache_dir+"/d8fbeb5c580e50f975ef73e80bebba9654228449/"
embed = hub.Module(module_url)
More information: https://tfhub.dev/google/universal-sentence-encoder/2
It's hard to do this.
There is a min-height:
css style, but it doesn't work in all browsers. You can use it, but the biggest problem is that you will need to set it to something like 90% or numbers like that (percents), but the top and bottom divs use fixed pixel sizes, and you won't be able to reconcile them.
var minHeight = $(window).height() -
$('#a').outerHeight(true) -
$('#c').outerHeight(true));
if($('#b').height() < minHeight) $('#b').height(minHeight);
I know a
and c
have fixed heights, but I rather measure them in case they change later.
Also, I am measuring the height of b
(I don't want to make is smaller after all), but if there is an image in there that did not load the height can change, so watch out for things like that.
It may be safer to do:
$('#b').prepend('<div style="float: left; width: 1px; height: ' + minHeight + 'px;"> </div>');
Which simply adds an element into that div with the correct height - that effectively acts as min-height even for browsers that don't have it. (You may want to add the element into your markup, and then just control the height of it via javascript instead of also adding it that way, that way you can take it into account when designing the layout.)
DataFrames
are based on RDDs. RDDs are immutable structures and do not allow updating elements on-site. To change values, you will need to create a new DataFrame by transforming the original one either using the SQL-like DSL or RDD operations like map
.
A highly recommended slide deck: Introducing DataFrames in Spark for Large Scale Data Science.
Spring Security Documentation mentions the reason for blocking // in the request.
For example, it could contain path-traversal sequences (like /../) or multiple forward slashes (//) which could also cause pattern-matches to fail. Some containers normalize these out before performing the servlet mapping, but others don’t. To protect against issues like these, FilterChainProxy uses an HttpFirewall strategy to check and wrap the request. Un-normalized requests are automatically rejected by default, and path parameters and duplicate slashes are removed for matching purposes.
So there are two possible solutions -
Step 1 Create custom firewall that allows slash in URL.
@Bean
public HttpFirewall allowUrlEncodedSlashHttpFirewall() {
StrictHttpFirewall firewall = new StrictHttpFirewall();
firewall.setAllowUrlEncodedSlash(true);
return firewall;
}
Step 2 And then configure this bean in websecurity
@Override
public void configure(WebSecurity web) throws Exception {
//@formatter:off
super.configure(web);
web.httpFirewall(allowUrlEncodedSlashHttpFirewall());
....
}
Step 2 is an optional step, Spring Boot just needs a bean to be declared of type HttpFirewall
and it will auto-configure it in filter chain.
Spring Security 5.4 Update
In Spring security 5.4 and above (Spring Boot >= 2.4.0), we can get rid of too many logs complaining about the request rejected by creating the below bean.
import org.springframework.security.web.firewall.RequestRejectedHandler;
import org.springframework.security.web.firewall.HttpStatusRequestRejectedHandler;
@Bean
RequestRejectedHandler requestRejectedHandler() {
return new HttpStatusRequestRejectedHandler();
}
# To read data from csv file
Dataset = pd.read_csv('Data.csv')
X = Dataset.iloc[:, :-1].values
# To calculate mean use imputer class
from sklearn.impute import SimpleImputer
imputer = SimpleImputer(missing_values=np.nan, strategy='mean')
imputer = imputer.fit(X[:, 1:3])
X[:, 1:3] = imputer.transform(X[:, 1:3])
open app/build.gradle
from your app-module and rewrite below line after dependencies block. This allows the plugin to determine what version of Play services you are using
apply plugin: 'com.google.gms.google-services'
I got this idea from here. In this tutorial second point is saying that above plugin line be at the bottom of your app/build.gradle
file so that no dependency collisions are introduced. Hope it will help you out.
var fs = require('fs');
function base64Encode(file) {
var body = fs.readFileSync(file);
return body.toString('base64');
}
var base64String = base64Encode('test.jpg');
console.log(base64String);
As mentioned in other people's comments, the top solution given here was not working for me in Ansible 2.2, particularly when also using with_items
.
It appears that OP's intended approach does work now with a slight change to the quoting of item
.
- set_fact: something="{{ something + [ item ] }}"
with_items:
- one
- two
- three
And a longer example where I've handled the initial case of the list being undefined and added an optional when
because that was also causing me grief:
- set_fact: something="{{ something|default([]) + [ item ] }}"
with_items:
- one
- two
- three
when: item.name in allowed_things.item_list
Make sure that in the path to the project there is no foldername having whitespace. While creating a project the specified path folders must not contain any space in their naming.
If you are looking for an specific hex character in the middle of the string, you can use "\xhh" where hh is the character in hexadecimal. I've tried and it works. I use framework for C++ Qt but it can solve problems in other cases, depends on the flavor you need to use (php, javascript, python , golang, etc.).
This answer was taken from:http://ult-tex.net/info/perl/
Had the same problem. Since you can still get data using the .data() method, you only have to figure out a way to write to the elements. This is the helper method I use. Like most people have said, you will have to use .attr. I have it replacing any _ with - as I know it does that. I'm not aware of any other characters it replaces...however I have not researched that.
function ExtendElementData(element, object){
//element is what you want to set data on
//object is a hash/js-object
var keys = Object.keys(object);
for (var i = 0; i < keys.length; i++){
var key = keys[i];
$(element).attr('data-'+key.replace("_", "-"), object[key]);
}
}
EDIT: 5/1/2017
I found there were still instances where you could not get the correct data using built in methods so what I use now is as follows:
function setDomData(element, object){
//object is a hash
var keys = Object.keys(object);
for (var i = 0; i < keys.length; i++){
var key = keys[i];
$(element).attr('data-'+key.replace("_", "-"), object[key]);
}
};
function getDomData(element, key){
var domObject = $(element).get(0);
var attKeys = Object.keys(domObject.attributes);
var values = null;
if (key != null){
values = $(element).attr('data-' + key);
} else {
values = {};
var keys = [];
for (var i = 0; i < attKeys.length; i++) {
keys.push(domObject.attributes[attKeys[i]]);
}
for (var i = 0; i < keys.length; i++){
if(!keys[i].match(/data-.*/)){
values[keys[i]] = $(element).attr(keys[i]);
}
}
}
return values;
};
Assuming the OP wants a Java answer:
As of JDBC3 / Java 6 there's the isValid() method which should be used rather than inventing one's own method.
The implementer of the driver is required to execute some sort of query against the database when this method id called. You - as a mere JDBC user - do not have to know or understand what this query is. All you have to do is to trust that the creator of the JDBC driver has done his/her work properly.
You can send it as a String, why not. But you are probably missusing JSON here a bit since as far as I understand the point is to send just the data needed and wrap them into HTML on the client.
Use this:
$(function(){
$("tr.b_row").each(function(){
var a_href = $(this).find('div.cpt h2 a').attr('href');
alert ("Href is: "+a_href);
});
});
See a working demo: http://jsfiddle.net/usmanhalalit/4Ea4k/1/
Sure, you could use HEREDOC, but as far as code readability goes it's not really any better than the first example, wrapping the string across multiple lines.
If you really want your multi-line string to look good and flow well with your code, I'd recommend concatenating strings together as such:
$text = "Hello, {$vars->name},\r\n\r\n"
. "The second line starts two lines below.\r\n"
. ".. Third line... etc";
This might be slightly slower than HEREDOC or a multi-line string, but it will flow well with your code's indentation and make it easier to read.
tac <file_name>
example:
$ cat file1.txt
1
2
3
4
5
$ tac file1.txt
5
4
3
2
1
You have to add the reference to System.configuration
in your solution. Also, include using System.Configuration;
. Once you do that, you'll have access to all the configuration settings.
And when you want all tables for some reason ?
You can generate these commands in SSMS:
SELECT
CONCAT('sqlcmd -S ',
'Your(local?)SERVERhere'
,' -d',
'YourDB'
,' -E -s, -W -Q "SELECT * FROM ',
TABLE_NAME,
'" >',
TABLE_NAME,
'.csv') FROM INFORMATION_SCHEMA.TABLES
And get again rows like this
sqlcmd -S ... -d... -E -s, -W -Q "SELECT * FROM table1" >table1.csv
sqlcmd -S ... -d... -E -s, -W -Q "SELECT * FROM table2" >table2.csv
...
There is also option to use better TAB as delimiter, but it would need a strange Unicode character - using Alt+9 in CMD, it came like this ? (Unicode CB25), but works only by copy/paste to command line not in batch.
there any rule I can follow to be sure that my app executes my own code just in the main thread?
Typically you wouldn't need to do anything to ensure this — your list of things is usually enough. Unless you're interacting with some API that happens to spawn a thread and run your code in the background, you'll be running on the main thread.
If you want to be really sure, you can do things like
[self performSelectorOnMainThread:@selector(myMethod:) withObject:anObj waitUntilDone:YES];
to execute a method on the main thread. (There's a GCD equivalent too.)
I am not very good in grep. But your problem can be solved using AWK command. Just see
awk '/select/,/from/' *.sql
The above code will result from first occurence of select
till first sequence of from
. Now you need to verify whether returned statements are having customername
or not. For this you can pipe the result. And can use awk or grep again.
After some time I will just copy all array elements (excluding these unwanted) to new array
The best way to get a pure "100% on, 100% off" blink, like the old <blink>
is like this:
.blink {_x000D_
animation: blinker 1s step-start infinite;_x000D_
}_x000D_
_x000D_
@keyframes blinker {_x000D_
50% {_x000D_
opacity: 0;_x000D_
}_x000D_
}
_x000D_
<div class="blink">BLINK</div>
_x000D_
Padding on/off. Determines the effective size of your input.
VALID:
No padding. Convolution etc. ops are only performed at locations that are "valid", i.e. not too close to the borders of your tensor.
With a kernel of 3x3 and image of 10x10, you would be performing convolution on the 8x8 area inside the borders.
SAME:
Padding is provided. Whenever your operation references a neighborhood (no matter how big), zero values are provided when that neighborhood extends outside the original tensor to allow that operation to work also on border values.
With a kernel of 3x3 and image of 10x10, you would be performing convolution on the full 10x10 area.
The HttpParams
interface isn't there for specifying query string parameters, it's for specifying runtime behaviour of the HttpClient
object.
If you want to pass query string parameters, you need to assemble them on the URL yourself, e.g.
new HttpGet(url + "key1=" + value1 + ...);
Remember to encode the values first (using URLEncoder
).
event.stopPropagation
will prevent handlers on parent elements from running.
Calling event.stopImmediatePropagation
will also prevent other handlers on the same element from running.
The difference is quite simple:
OLTP (Online Transaction Processing)
OLTP is a class of information systems that facilitate and manage transaction-oriented applications. OLTP has also been used to refer to processing in which the system responds immediately to user requests. Online transaction processing applications are high throughput and insert or update-intensive in database management. Some examples of OLTP systems include order entry, retail sales, and financial transaction systems.
OLAP (Online Analytical Processing)
OLAP is part of the broader category of business intelligence, which also encompasses relational database, report writing and data mining. Typical applications of OLAP include business reporting for sales, marketing, management reporting, business process management (BPM), budgeting and forecasting, financial reporting and similar areas.
See more details OLTP and OLAP
as PHP relies on server, the real-time location cant be provided only static location can be provided it is better to avoid to rely on the JS for location rather than using php. But there is a need to post the js data to php so that it can be easily be accesible to program on server
If you are using SQL Server try this:
SELECT * FROM MyTable
WHERE MyDate < DATEADD(month, -2, GETDATE())
Based on your update it would be:
SELECT * FROM FB WHERE Dte < DATEADD(month, -2, GETDATE())
From the Mongo documentation:
The mongoexport utility takes a collection and exports to either JSON or CSV. You can specify a filter for the query, or a list of fields to output
Read more here: http://www.mongodb.org/display/DOCS/mongoexport
Official FAQ ( https://reactjs.org/docs/hooks-faq.html#is-there-something-like-forceupdate ) now recommends this way if you really need to do it:
const [ignored, forceUpdate] = useReducer(x => x + 1, 0);
function handleClick() {
forceUpdate();
}
If you want to just untrack a file and not delete from local and remote repo then use this command:
git update-index --assume-unchanged file_name_with_path
I find that the usual float format {:9.5f} works properly -- suppressing small-value e-notations -- when displaying a list or an array using a loop. But that format sometimes fails to suppress its e-notation when a formatter has several items in a single print statement. For example:
import numpy as np
np.set_printoptions(suppress=True)
a3 = 4E-3
a4 = 4E-4
a5 = 4E-5
a6 = 4E-6
a7 = 4E-7
a8 = 4E-8
#--first, display separate numbers-----------
print('Case 3: a3, a4, a5: {:9.5f}{:9.5f}{:9.5f}'.format(a3,a4,a5))
print('Case 4: a3, a4, a5, a6: {:9.5f}{:9.5f}{:9.5f}{:9.5}'.format(a3,a4,a5,a6))
print('Case 5: a3, a4, a5, a6, a7: {:9.5f}{:9.5f}{:9.5f}{:9.5}{:9.5f}'.format(a3,a4,a5,a6,a7))
print('Case 6: a3, a4, a5, a6, a7, a8: {:9.5f}{:9.5f}{:9.5f}{:9.5f}{:9.5}{:9.5f}'.format(a3,a4,a5,a6,a7,a8))
#---second, display a list using a loop----------
myList = [a3,a4,a5,a6,a7,a8]
print('List 6: a3, a4, a5, a6, a7, a8: ', end='')
for x in myList:
print('{:9.5f}'.format(x), end='')
print()
#---third, display a numpy array using a loop------------
myArray = np.array(myList)
print('Array 6: a3, a4, a5, a6, a7, a8: ', end='')
for x in myArray:
print('{:9.5f}'.format(x), end='')
print()
My results show the bug in cases 4, 5, and 6:
Case 3: a3, a4, a5: 0.00400 0.00040 0.00004
Case 4: a3, a4, a5, a6: 0.00400 0.00040 0.00004 4e-06
Case 5: a3, a4, a5, a6, a7: 0.00400 0.00040 0.00004 4e-06 0.00000
Case 6: a3, a4, a5, a6, a7, a8: 0.00400 0.00040 0.00004 0.00000 4e-07 0.00000
List 6: a3, a4, a5, a6, a7, a8: 0.00400 0.00040 0.00004 0.00000 0.00000 0.00000
Array 6: a3, a4, a5, a6, a7, a8: 0.00400 0.00040 0.00004 0.00000 0.00000 0.00000
I have no explanation for this, and therefore I always use a loop for floating output of multiple values.
While the accepted answer is correct, I'll add a more elegant version (in my opinion):
boolean idExists = tabPane.getTabs().stream()
.map(Tab::getId)
.anyMatch(idToCheck::equals);
Don't neglect using Stream#map() which allows to flatten the data structure before applying the Predicate
.
You can see a difference between the two contexts when you launch your app directly from the home screen vs when your app is launched from another app via share intent.
Here a practical example of what "non-standard back stack behaviors", mentioned by @CommonSenseCode, means:
Suppose that you have two apps that communicate with each other, App1 and App2.
Launch App2:MainActivity from launcher. Then from MainActivity launch App2:SecondaryActivity. There, either using activity context or application context, both activities live in the same task and this is ok (given that you use all standard launch modes and intent flags). You can go back to MainActivity with a back press and in the recent apps you have only one task.
Suppose now that you are in App1 and launch App2:MainActivity with a share intent (ACTION_SEND or ACTION_SEND_MULTIPLE). Then from there try to launch App2:SecondaryActivity (always with all standard launch modes and intent flags). What happens is:
if you launch App2:SecondaryActivity with application context on Android < 10 you cannot launch all the activities in the same task. I have tried with android 7 and 8 and the SecondaryActivity is always launched in a new task (I guess is because App2:SecondaryActivity is launched with the App2 application context but you're coming from App1 and you didn't launch the App2 application directly. Maybe under the hood android recognize that and use FLAG_ACTIVITY_NEW_TASK). This can be good or bad depending on your needs, for my application was bad.
On Android 10 the app crashes with the message
"Calling startActivity() from outside of an Activity context requires the FLAG_ACTIVITY_NEW_TASK flag. Is this really what you want?".
So to make it work on Android 10 you have to use FALG_ACTIVITY_NEW_TASK and you cannot run all activities in the same task.
As you can see the behavior is different between android versions, weird.
if you launch App2:SecondaryActivity with activity context all goes well and you can run all the activities in the same task resulting in a linear backstack navigation.
I hope I have added some useful information
Slightly abbreviated could be...
echo date("Y-m-d H:i:s", strtotime($mysqltime));
If all you really want is to run javascript, this would be easiest (VB .Net):
MyWebBrowser.Navigate("javascript:function foo(){alert('hello');}foo();")
I guess that this wouldn't "inject" it but it'll run your function, if that's what you're after. (Just in case you've over-complicated the problem.) And if you can figure out how to inject in javascript, put that into the body of the function "foo" and let the javascript do the injection for you.
Step 1:
CREATE TABLE [DBO].T_EMPLOYEES_DETAILS ( Id int, Name nvarchar(50), Gender nvarchar(10), Salary int )
Step 2:
CREATE TYPE EmpInsertType AS TABLE ( Id int, Name nvarchar(50), Gender nvarchar(10), Salary int )
Step 3:
/* Must add READONLY keyword at end of the variable */
CREATE PROC PRC_EmpInsertType @EmployeeInsertType EmpInsertType READONLY AS BEGIN INSERT INTO [DBO].T_EMPLOYEES_DETAILS SELECT * FROM @EmployeeInsertType END
Step 4:
DECLARE @EmployeeInsertType EmpInsertType
INSERT INTO @EmployeeInsertType VALUES(1,'John','Male',50000) INSERT INTO @EmployeeInsertType VALUES(2,'Praveen','Male',60000) INSERT INTO @EmployeeInsertType VALUES(3,'Chitra','Female',45000) INSERT INTO @EmployeeInsertType VALUES(4,'Mathy','Female',6600) INSERT INTO @EmployeeInsertType VALUES(5,'Sam','Male',50000)
EXEC PRC_EmpInsertType @EmployeeInsertType
=======================================
SELECT * FROM T_EMPLOYEES_DETAILS
OUTPUT
1 John Male 50000
2 Praveen Male 60000
3 Chitra Female 45000
4 Mathy Female 6600
5 Sam Male 50000
Take a look at What is the most appropriate way to store user settings in Android application if you're concerned about storing passwords as clear text in SharedPreferences.
Every answer so far implies the word "shell" in the question equates to Bash.
This is how one could do that in a standard Bourne shell:
printf $str | tail -c 1
Go to Tools > Options. In the tree on the left, select SQL Server Object Explorer. Set the option "Value for Edit Top Rows command" to 0. It'll now allow you to view and edit the entire table from the context menu.
Performance wise, they are exactly the same (at least in SQL Server).
PS: Be aware that the IMPLICIT OUTER JOIN
syntax is deprecated since SQL Server 2005. (The IMPLICIT INNER JOIN
syntax as used in the question is still supported)
Deprecation of "Old Style" JOIN Syntax: Only A Partial Thing
You can disable FK and CHECK constraints only in SQL 2005+. See ALTER TABLE
ALTER TABLE foo NOCHECK CONSTRAINT ALL
or
ALTER TABLE foo NOCHECK CONSTRAINT CK_foo_column
Primary keys and unique constraints can not be disabled, but this should be OK if I've understood you correctly.
When you generate a JAXB model from an XML Schema, global elements that correspond to named complex types will have that metadata captured as an @XmlElementDecl
annotation on a create method in the ObjectFactory
class. Since you are creating the JAXBContext
on just the DocumentType
class this metadata isn't being processed. If you generated your JAXB model from an XML Schema then you should create the JAXBContext
on the generated package name or ObjectFactory
class to ensure all the necessary metadata is processed.
Example solution:
JAXBContext jaxbContext = JAXBContext.newInstance(my.generatedschema.dir.ObjectFactory.class);
DocumentType documentType = ((JAXBElement<DocumentType>) jaxbContext.createUnmarshaller().unmarshal(inputStream)).getValue();
Working solution for MVC
public ActionResult Index()
{
string fileName = "test.pdf";
string fileName1 = "test.vsix";
string fileNameZip = "Export_" + DateTime.Now.ToString("yyyyMMddhhmmss") + ".zip";
byte[] fileBytes = System.IO.File.ReadAllBytes(@"C:\test\test.pdf");
byte[] fileBytes1 = System.IO.File.ReadAllBytes(@"C:\test\test.vsix");
byte[] compressedBytes;
using (var outStream = new MemoryStream())
{
using (var archive = new ZipArchive(outStream, ZipArchiveMode.Create, true))
{
var fileInArchive = archive.CreateEntry(fileName, CompressionLevel.Optimal);
using (var entryStream = fileInArchive.Open())
using (var fileToCompressStream = new MemoryStream(fileBytes))
{
fileToCompressStream.CopyTo(entryStream);
}
var fileInArchive1 = archive.CreateEntry(fileName1, CompressionLevel.Optimal);
using (var entryStream = fileInArchive1.Open())
using (var fileToCompressStream = new MemoryStream(fileBytes1))
{
fileToCompressStream.CopyTo(entryStream);
}
}
compressedBytes = outStream.ToArray();
}
return File(compressedBytes, "application/zip", fileNameZip);
}
Just to extend the accepted answer:
From version 2.7
and 3.1
python has got set
literal {}
in form of usage {1,2,3}
, but {}
itself still used for empty dict.
Python 2.7 (first line is invalid in Python <2.7)
>>> {1,2,3}.__class__
<type 'set'>
>>> {}.__class__
<type 'dict'>
Python 3.x
>>> {1,2,3}.__class__
<class 'set'>
>>> {}.__class__
<class 'dict'>
More here: https://docs.python.org/3/whatsnew/2.7.html#other-language-changes
I always declare string with string.empty;
should show the lines except the first line :
cat textfile.txt | tail -n +2
An important difference between a 'typedef struct' and a 'struct' in C++ is that inline member initialisation in 'typedef structs' will not work.
// the 'x' in this struct will NOT be initialised to zero
typedef struct { int x = 0; } Foo;
// the 'x' in this struct WILL be initialised to zero
struct Foo { int x = 0; };
None of these options worked for me. I've found that the auto detection of annotation processors to be pretty flaky. I ended up creating a plugin section in the pom.xml file that explicitly sets the annotation processors that are used for the project. The advantage of this is that you don't need to rely on any IDE settings.
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.7.0</version>
<configuration>
<compilerVersion>1.8</compilerVersion>
<source>1.8</source>
<target>1.8</target>
<annotationProcessors>
<annotationProcessor>org.springframework.boot.configurationprocessor.ConfigurationMetadataAnnotationProcessor</annotationProcessor>
<annotationProcessor>lombok.launch.AnnotationProcessorHider$AnnotationProcessor</annotationProcessor>
<annotationProcessor>org.hibernate.jpamodelgen.JPAMetaModelEntityProcessor</annotationProcessor>
</annotationProcessors>
</configuration>
</plugin>
DO NOT USE the Atom platformio-atom-ide-terminal
Plugin to do this.
USE THE TERMINAL OF YOUR DISTRO DIRECTLY.
I kept getting this error while rebasing/squishing commits and didn't know why because I had done it before several times.
Didn't matter how many times I would delete the index.lock
file, every time it would fail.
Turns out it was because I was using the ATOM EDITOR terminal plugin. Once I used the terminal that ships with Ubuntu it worked like a charm.
https://developers.google.com/chrome-developer-tools/docs/settings
The following commands are available with .NET Core SDK 2.1 (v2.1.300):
To list all installed .NET Core SDKs use: dotnet --list-sdks
To list all installed .NET Core runtimes use dotnet --list-runtimes
(tested on Windows as of writing, 03 Jun 2018, and again on 23 Aug 2018)
Update as of 24 Oct 2018: Better option is probably now dotnet --info
in a terminal or PowerShell window as already mentioned in other answers.
Try PyPDF2.
There is a good tutorial here: https://automatetheboringstuff.com/chapter13/
function stacktrace(){
return (new Error()).stack.split('\n').reverse().slice(0,-2).reverse().join('\n');
}
This error message can happen if you have duplicate entries/entities and run SaveChanges().
You just need to close the visual studio code and restart again. But to get the ng command work in vs code, you need to first compile the project with cmd in administrator mode.
I was also facing the same problem. But this method resolved it.
df.filter($"state" like "T%%")
for pattern matching
df.filter($"state" === "TX")
or df.filter("state = 'TX'")
for equality
There is a more simpler way using the mongoose exists function
router.post("/groups/members", async (ctx) => {
const group_name = ctx.request.body.group_membership.group_name;
const member_name = ctx.request.body.group_membership.group_members;
const GroupMembership = GroupModels.GroupsMembers;
console.log("group_name : ", group_name, "member : ", member_name);
try {
if (
(await GroupMembership.exists({
"group_membership.group_name": group_name,
})) === false
) {
console.log("new function");
const newGroupMembership = await GroupMembership.insertMany({
group_membership: [
{ group_name: group_name, group_members: [member_name] },
],
});
await newGroupMembership.save();
} else {
const UpdateGroupMembership = await GroupMembership.updateOne(
{ "group_membership.group_name": group_name },
{ $push: { "group_membership.$.group_members": member_name } },
);
console.log("update function");
await UpdateGroupMembership.save();
}
ctx.response.status = 201;
ctx.response.message = "A member added to group successfully";
} catch (error) {
ctx.body = {
message: "Some validations failed for Group Member Creation",
error: error.message,
};
console.log(error);
ctx.throw(400, error);
}
});
There are several options, including using the method you demonstrate, With, and using a variable.
My preference is option 4 below: Dim
a variable of type Worksheet
and store the worksheet and call the methods on the variable or pass it to functions, however any of the options work.
Sub Test()
Dim SheetName As String
Dim SearchText As String
Dim FoundRange As Range
SheetName = "test"
SearchText = "abc"
' 0. If you know the sheet is the ActiveSheet, you can use if directly.
Set FoundRange = ActiveSheet.UsedRange.Find(What:=SearchText)
' Since I usually have a lot of Subs/Functions, I don't use this method often.
' If I do, I store it in a variable to make it easy to change in the future or
' to pass to functions, e.g.: Set MySheet = ActiveSheet
' If your methods need to work with multiple worksheets at the same time, using
' ActiveSheet probably isn't a good idea and you should just specify the sheets.
' 1. Using Sheets or Worksheets (Least efficient if repeating or calling multiple times)
Set FoundRange = Sheets(SheetName).UsedRange.Find(What:=SearchText)
Set FoundRange = Worksheets(SheetName).UsedRange.Find(What:=SearchText)
' 2. Using Named Sheet, i.e. Sheet1 (if Worksheet is named "Sheet1"). The
' sheet names use the title/name of the worksheet, however the name must
' be a valid VBA identifier (no spaces or special characters. Use the Object
' Browser to find the sheet names if it isn't obvious. (More efficient than #1)
Set FoundRange = Sheet1.UsedRange.Find(What:=SearchText)
' 3. Using "With" (more efficient than #1)
With Sheets(SheetName)
Set FoundRange = .UsedRange.Find(What:=SearchText)
End With
' or possibly...
With Sheets(SheetName).UsedRange
Set FoundRange = .Find(What:=SearchText)
End With
' 4. Using Worksheet variable (more efficient than 1)
Dim MySheet As Worksheet
Set MySheet = Worksheets(SheetName)
Set FoundRange = MySheet.UsedRange.Find(What:=SearchText)
' Calling a Function/Sub
Test2 Sheets(SheetName) ' Option 1
Test2 Sheet1 ' Option 2
Test2 MySheet ' Option 4
End Sub
Sub Test2(TestSheet As Worksheet)
Dim RowIndex As Long
For RowIndex = 1 To TestSheet.UsedRange.Rows.Count
If TestSheet.Cells(RowIndex, 1).Value = "SomeValue" Then
' Do something
End If
Next RowIndex
End Sub
Try this:
=FORMAT(Cdate(today), "dd-MM-yyyy")
or
=FORMAT(Cdate(today), "MM-dd-yyyy")
or
=FORMAT(Cdate(today), "yyyy-MM-dd")
or
=Report Generation Date: " & FORMAT(Cdate(today), "dd-MM-yyyy")
You should format the date in the same format your customer (internal or external) wants to see the date. For example In one of my servers it is running on American date format (MM-dd-yyyy) and on my reports I must ensure the dates displayed are European (yyyy-MM-dd).
you can use str.isdigit() method or str.isnumeric() method
If you want to send a custom HTTP Header (not a SOAP Header) then you need to use the HttpWebRequest class the code would look like:
HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(url);
webRequest.Headers.Add("Authorization", token);
You cannot add HTTP headers using the visual studio generated proxy, which can be a real pain.
The ContextSwitchDeadlock
doesn't necessarily mean your code has an issue, just that there is a potential. If you go to Debug > Exceptions
in the menu and expand the Managed Debugging Assistants
, you will find ContextSwitchDeadlock
is enabled. If you disable this, VS will no longer warn you when items are taking a long time to process. In some cases you may validly have a long-running operation. It's also helpful if you are debugging and have stopped on a line while this is processing - you don't want it to complain before you've had a chance to dig into an issue.
i would suggest a little change to @Lajos's answer... in my particular situation i could potentially have a hash as part of the url, which will cause problems for parsing the parameter that we're inserting with this method after the redirect.
function setGetParameter(paramName, paramValue) {
var url = window.location.href.replace(window.location.hash, '');
if (url.indexOf(paramName + "=") >= 0) {
var prefix = url.substring(0, url.indexOf(paramName));
var suffix = url.substring(url.indexOf(paramName));
suffix = suffix.substring(suffix.indexOf("=") + 1);
suffix = (suffix.indexOf("&") >= 0) ? suffix.substring(suffix.indexOf("&")) : "";
url = prefix + paramName + "=" + paramValue + suffix;
}else {
if (url.indexOf("?") < 0)
url += "?" + paramName + "=" + paramValue;
else
url += "&" + paramName + "=" + paramValue;
}
url += window.location.hash;
window.location.href = url;
}
You could do it like this:
<?php
$datetime = "20130409163705";
$format = "YmdHis";
$date = date_parse_from_format ($format, $datetime);
print_r ($date);
?>
You can look at date_parse_from_format()
and the accepted format values.
If you directly init state from props, it will shows warning in React 16.5 (5th September 2018)
There's also MSMQ (Microsoft Message Queueing) which can operate across networks as well as on a local computer. Although there are better ways to communicate it's worth looking into: https://msdn.microsoft.com/en-us/library/ms711472(v=vs.85).aspx
Android has all the tools you need to parse json built-in. Example follows, no need for GSON or anything like that.
Get your JSON:
Assume you have a json string
String result = "{\"someKey\":\"someValue\"}";
Create a JSONObject:
JSONObject jObject = new JSONObject(result);
If your json string is an array, e.g.:
String result = "[{\"someKey\":\"someValue\"}]"
then you should use JSONArray
as demonstrated below and not JSONObject
To get a specific string
String aJsonString = jObject.getString("STRINGNAME");
To get a specific boolean
boolean aJsonBoolean = jObject.getBoolean("BOOLEANNAME");
To get a specific integer
int aJsonInteger = jObject.getInt("INTEGERNAME");
To get a specific long
long aJsonLong = jObject.getLong("LONGNAME");
To get a specific double
double aJsonDouble = jObject.getDouble("DOUBLENAME");
To get a specific JSONArray:
JSONArray jArray = jObject.getJSONArray("ARRAYNAME");
To get the items from the array
for (int i=0; i < jArray.length(); i++)
{
try {
JSONObject oneObject = jArray.getJSONObject(i);
// Pulling items from the array
String oneObjectsItem = oneObject.getString("STRINGNAMEinTHEarray");
String oneObjectsItem2 = oneObject.getString("anotherSTRINGNAMEINtheARRAY");
} catch (JSONException e) {
// Oops
}
}
To make an exact copy, permissions, ownership, and all use "-a" with "cp". "-r" will copy the contents of the files but not necessarily keep other things the same.
cp -av Source/* Dest/
(make sure Dest/ exists first)
If you want to repeatedly update from one to the other or make sure you also copy all dotfiles, rsync
is a great help:
rsync -av --delete Source/ Dest/
This is also "recoverable" in that you can restart it if you abort it while copying. I like "-v" because it lets you watch what is going on but you can omit it.
The above answer was helpful for me, but it might be useful (or best practice) to add the name on submit, as I wound up doing. Hopefully this will be helpful to someone. CodePen Sample
<form id="formAddName">
<fieldset>
<legend>Add Name </legend>
<label for="firstName">First Name</label>
<input type="text" id="firstName" name="firstName" />
<button>Add</button>
</fieldset>
</form>
<ol id="demo"></ol>
<script>
var list = document.getElementById('demo');
var entry = document.getElementById('formAddName');
entry.onsubmit = function(evt) {
evt.preventDefault();
var firstName = document.getElementById('firstName').value;
var entry = document.createElement('li');
entry.appendChild(document.createTextNode(firstName));
list.appendChild(entry);
}
</script>
Use filectime. For Windows it will return the creation time, and for Unix the change time which is the best you can get because on Unix there is no creation time (in most filesystems).
Note also that in some Unix texts the ctime of a file is referred to as being the creation time of the file. This is wrong. There is no creation time for Unix files in most Unix filesystems.
If your cascading deletes nuke a product because it was a member of a category that was killed, then you've set up your foreign keys improperly. Given your example tables, you should have the following table setup:
CREATE TABLE categories (
id int unsigned not null primary key,
name VARCHAR(255) default null
)Engine=InnoDB;
CREATE TABLE products (
id int unsigned not null primary key,
name VARCHAR(255) default null
)Engine=InnoDB;
CREATE TABLE categories_products (
category_id int unsigned not null,
product_id int unsigned not null,
PRIMARY KEY (category_id, product_id),
KEY pkey (product_id),
FOREIGN KEY (category_id) REFERENCES categories (id)
ON DELETE CASCADE
ON UPDATE CASCADE,
FOREIGN KEY (product_id) REFERENCES products (id)
ON DELETE CASCADE
ON UPDATE CASCADE
)Engine=InnoDB;
This way, you can delete a product OR a category, and only the associated records in categories_products will die alongside. The cascade won't travel farther up the tree and delete the parent product/category table.
e.g.
products: boots, mittens, hats, coats
categories: red, green, blue, white, black
prod/cats: red boots, green mittens, red coats, black hats
If you delete the 'red' category, then only the 'red' entry in the categories table dies, as well as the two entries prod/cats: 'red boots' and 'red coats'.
The delete will not cascade any farther and will not take out the 'boots' and 'coats' categories.
comment followup:
you're still misunderstanding how cascaded deletes work. They only affect the tables in which the "on delete cascade" is defined. In this case, the cascade is set in the "categories_products" table. If you delete the 'red' category, the only records that will cascade delete in categories_products are those where category_id = red
. It won't touch any records where 'category_id = blue', and it would not travel onwards to the "products" table, because there's no foreign key defined in that table.
Here's a more concrete example:
categories: products:
+----+------+ +----+---------+
| id | name | | id | name |
+----+------+ +----+---------+
| 1 | red | | 1 | mittens |
| 2 | blue | | 2 | boots |
+---++------+ +----+---------+
products_categories:
+------------+-------------+
| product_id | category_id |
+------------+-------------+
| 1 | 1 | // red mittens
| 1 | 2 | // blue mittens
| 2 | 1 | // red boots
| 2 | 2 | // blue boots
+------------+-------------+
Let's say you delete category #2 (blue):
DELETE FROM categories WHERE (id = 2);
the DBMS will look at all the tables which have a foreign key pointing at the 'categories' table, and delete the records where the matching id is 2. Since we only defined the foreign key relationship in products_categories
, you end up with this table once the delete completes:
+------------+-------------+
| product_id | category_id |
+------------+-------------+
| 1 | 1 | // red mittens
| 2 | 1 | // red boots
+------------+-------------+
There's no foreign key defined in the products
table, so the cascade will not work there, so you've still got boots and mittens listed. There's just no 'blue boots' and no 'blue mittens' anymore.
The error you get if because you need to escape the quotes (like other answers said).
To avoid that, you can use an alternative syntax for you strings declarations, called "Heredoc"
With this syntax, you can declare a long string, even containing single-quotes and/or double-quotes, whithout having to escape thoses ; it will make your Javascript code easier to write, modify, and understand -- which is always a good thing.
As an example, your code could become :
$str = <<<MY_MARKER
<script type="text/javascript">
document.write("Hello World!");
</script>
MY_MARKER;
echo $str;
Note that with Heredoc syntax (as with string delimited by double-quotes), variables are interpolated.
Use JSON.stringify() to wrap your json
var parameter = JSON.stringify({type:"user", username:user_email, password:user_password});
$http.post(url, parameter).
success(function(data, status, headers, config) {
// this callback will be called asynchronously
// when the response is available
console.log(data);
}).
error(function(data, status, headers, config) {
// called asynchronously if an error occurs
// or server returns response with an error status.
});
From a performance point of view, in python3.X
[i[0] for i in a]
and list(zip(*a))[0]
are equivalentlist(map(operator.itemgetter(0), a))
Code
import timeit
iterations = 100000
init_time = timeit.timeit('''a = [(i, u'abc') for i in range(1000)]''', number=iterations)/iterations
print(timeit.timeit('''a = [(i, u'abc') for i in range(1000)]\nb = [i[0] for i in a]''', number=iterations)/iterations - init_time)
print(timeit.timeit('''a = [(i, u'abc') for i in range(1000)]\nb = list(zip(*a))[0]''', number=iterations)/iterations - init_time)
output
3.491014136001468e-05
3.422205176000717e-05
The issue HttpServletRequest.login does not set authentication state in session has been fixed in 3.0.1. Update glassfish to the latest version and you're done.
Updating is quite straightforward:
glassfishv3/bin/pkg set-authority -P dev.glassfish.org
glassfishv3/bin/pkg image-update
Dimension table : It is nothing but we can maintains information about the characterized date called as Dimension table.
Example : Time Dimension , Product Dimension.
Fact Table : It is nothing but we can maintains information about the metrics or precalculation data.
Example : Sales Fact, Order Fact.
Star schema : one fact table link with dimension table form as a Start Schema.
You can use .html()
to get content of span
and or div
elements.
example:
var monthname = $(this).html();
alert(monthname);
Using lodash unionWith function, you can accomplish a simple upsert to an object. The documentation states that if there is a match, it will use the first array. Wrap your updated object in [ ] (array) and put it as the first array of the union function. Simply specify your matching logic and if found it will replace it and if not it will add it
Example:
let contacts = [
{type: 'email', desc: 'work', primary: true, value: 'email prim'},
{type: 'phone', desc: 'cell', primary: true, value:'phone prim'},
{type: 'phone', desc: 'cell', primary: false,value:'phone secondary'},
{type: 'email', desc: 'cell', primary: false,value:'email secondary'}
]
// Update contacts because found a match
_.unionWith([{type: 'email', desc: 'work', primary: true, value: 'email updated'}], contacts, (l, r) => l.type == r.type && l.primary == r.primary)
// Add to contacts - no match found
_.unionWith([{type: 'fax', desc: 'work', primary: true, value: 'fax added'}], contacts, (l, r) => l.type == r.type && l.primary == r.primary)
Those are called #include guards.
Once the header is included, it checks if a unique value (in this case HEADERFILE_H
) is defined. Then if it's not defined, it defines it and continues to the rest of the page.
When the code is included again, the first ifndef
fails, resulting in a blank file.
That prevents double declaration of any identifiers such as types, enums and static variables.
Use iframe
instead:
<iframe id="stream" src="YOUTSOURCEAUDIOORVIDEOHERE" frameborder="0"></iframe>
In php you can check like below :
Specifying encoding list explicitly :
php -r "echo 'probably : ' . mb_detect_encoding(file_get_contents('myfile.txt'), 'UTF-8, ASCII, JIS, EUC-JP, SJIS, iso-8859-1') . PHP_EOL;"
More accurate "mb_list_encodings":
php -r "echo 'probably : ' . mb_detect_encoding(file_get_contents('myfile.txt'), mb_list_encodings()) . PHP_EOL;"
Here in first example, you can see that i put a list of encodings (detect list order) that might be matching. To have more accurate result you can use all possible encodings via : mb_list_encodings()
Note mb_* functions require php-mbstring
apt-get install php-mbstring
str_replace('"', "", $string);
str_replace("'", "", $string);
I assume you mean quotation marks?
Otherwise, go for some regex, this will work for html quotes for example:
preg_replace("/<!--.*?-->/", "", $string);
C-style quotes:
preg_replace("/\/\/.*?\n/", "\n", $string);
CSS-style quotes:
preg_replace("/\/*.*?\*\//", "", $string);
bash-style quotes:
preg-replace("/#.*?\n/", "\n", $string);
Etc etc...
For Visual Studio 2019 users:
By the comment under accepted answer, link:
Well... This is "almost" still the same in VS 2019... if you already done that and seems not to work, go to: Tools > Options, and then Text Editor > Advanced > Uncheck "Use adaptive formatting" as seen here
public static void main(String[] args) {
int i,j;
StringBuffer str=new StringBuffer();
Scanner in = new Scanner(System.in);
System.out.print("Enter string: ");
str.append(in.nextLine());
for (i=0;i<str.length()-1;i++)
{
for (j=1;j<str.length();j++)
{
if (str.charAt(i)==str.charAt(j))
str.deleteCharAt(j);
}
}
System.out.println("Removed String: " + str);
}
for logical && both the parameters must be true , then it ll be entered in if {} clock otherwise it ll execute else {}. for logical || one of parameter or condition is true is sufficient to execute if {}.
if( (A) && (B) ){
//if A and B both are true
}else{
}
if( (A) ||(B) ){
//if A or B is true
}else{
}
I've had the same issue after running out of disk space. Closing and reopening terminal fixed it one time. Restarting my Mac the next.
Some easy things to try before jumping to random commands:
inArray
returns the index of the element in the array, not a boolean indicating if the item exists in the array. If the element was not found, -1
will be returned.
So, to check if an item is in the array, use:
if(jQuery.inArray("test", myarray) !== -1)
var prettyDate = $.datepicker.formatDate('dd-M-yy', new Date());
alert(prettyDate);
Assign the prettyDate to the necessary control.
This was pretty well answered over here: How to make a YouTube embedded video a full page width one?
If you add '?rel=0&autoplay=1' to the end of the url in the embed code (like this)
<iframe id="video" src="//www.youtube.com/embed/5iiPC-VGFLU?rel=0&autoplay=1" frameborder="0" allowfullscreen></iframe>
of the video it should play on load. Here's a demo over at jsfiddle.
f = open('test.txt','r')
for line in f.xreadlines():
print line
f.close()
You should simply install request
locally within your project.
Just cd
to the folder containing your js file and run
npm install request
As an alternative, to get around the elements-can-be-modified issue with a readonly array, you can use a static property instead. (The individual elements can still be changed, but these changes will only be made on the local copy of the array.)
public static string[] Titles
{
get
{
return new string[] { "German", "Spanish", "Corrects", "Wrongs"};
}
}
Of course, this will not be particularly efficient as a new string array is created each time.
You can use:
<td onclick='javascript:someFunc(this);'></td>
With passing this you can access the DOM object via your function parameters.
Try to use a grayscale colormap?
E.g. something like
imshow(..., cmap=pyplot.cm.binary)
For a list of colormaps, see http://scipy-cookbook.readthedocs.org/items/Matplotlib_Show_colormaps.html
Have a look at either Left or Substring if you need to chop it up even more.
Google and the MySQL docs are a good place to start - you'll usually not get such a warm response if you've not even tried to help yourself before asking a question.
Why not just do it in css?
Take out the 'href' attribute in your anchor tag
<ul class="product-info">
<li>
<a>YOU CLICK THIS TO SHOW/HIDE</a>
<div class="toggle">
<p>CONTENT TO SHOW/HIDE</p>
</div>
</li>
</ul>
In your css,
a{
cursor: pointer;
}
I use these easy functions, it work like jquery slideUp slideDown, use it in an helper class, just pass your view :
public static void expand(final View v) {
v.measure(WindowManager.LayoutParams.MATCH_PARENT, WindowManager.LayoutParams.WRAP_CONTENT);
final int targetHeight = v.getMeasuredHeight();
// Older versions of android (pre API 21) cancel animations for views with a height of 0.
v.getLayoutParams().height = 1;
v.setVisibility(View.VISIBLE);
Animation a = new Animation()
{
@Override
protected void applyTransformation(float interpolatedTime, Transformation t) {
v.getLayoutParams().height = interpolatedTime == 1
? WindowManager.LayoutParams.WRAP_CONTENT
: (int)(targetHeight * interpolatedTime);
v.requestLayout();
}
@Override
public boolean willChangeBounds() {
return true;
}
};
// 1dp/ms
a.setDuration((int) (targetHeight / v.getContext().getResources().getDisplayMetrics().density));
v.startAnimation(a);
}
public static void collapse(final View v) {
final int initialHeight = v.getMeasuredHeight();
Animation a = new Animation()
{
@Override
protected void applyTransformation(float interpolatedTime, Transformation t) {
if(interpolatedTime == 1){
v.setVisibility(View.GONE);
}else{
v.getLayoutParams().height = initialHeight - (int)(initialHeight * interpolatedTime);
v.requestLayout();
}
}
@Override
public boolean willChangeBounds() {
return true;
}
};
// 1dp/ms
a.setDuration((int)(initialHeight / v.getContext().getResources().getDisplayMetrics().density));
v.startAnimation(a);
}
you can implement your adapter's onClickListener:
public class AdapterClass extends RecyclerView.Adapter<AdapterClass.MyViewHolder>implements View.OnClickListener
and use interface with method in it
public interface mClickListener {
public void mClick(View v, int position);
}
and in your onClick method call the method in the interface and pass it the view and position
in your main activity implement that interface
public class MainActivity extends ActionBarActivity implements AdapterClass.mClickListener
and override that method
@Override
public void onCommentsClick(View v, int position) {
final Intent intent = new Intent(this, OtherActivity.class);
}
as its better to manage your activity transition by the activity not other classes
import datetime
def today_date():
'''
utils:
get the datetime of today
'''
date=datetime.datetime.now().date()
date=pd.to_datetime(date)
return date
Df['Date'] = today_date()
this could be safely used in pandas dataframes.
I'm dealing with a similar problem currently.
There are two main options that occur to me immediately: (1) user-string checking, or (2) maintaining separate mobile pages using a different URL and having users choose what's better for them.
<link rel="mobile.css" />
instead of the normal style.User strings have identifying information about browser, renderer, operating system, etc. It would be up to you to decide what devices are "touch" versus non-touch. You may be able to find this information available somewhere and map it into your system.
A. If you're allowed to ignore old browsers, you just have to add a single rule to the normal, non-mobile css, namely: EDIT: Erk. After doing some experimentation, I discovered the below rule also disables the ability to follow links in webkit-browsers in addition to just causing aesthetic effects to be disabled - see http://jsfiddle.net/3nkcdeao/
As such, you'll have to be a bit more selective as to how you modify rules for the mobile case than what I show here, but it may be a helpful starting point:
* {
pointer-events: none !important; /* only use !important if you have to */
}
As a sidenote, disabling pointer-events on a parent and then explicitly enabling them on a child currently causes any hover-effects on the parent to become active again if a child-element enters :hover
.
See http://jsfiddle.net/38Lookhp/5/
B. If you're supporting legacy web-renderers, you'll have to do a bit more work along the lines of removing any rules which set special styles during :hover
. To save everyone time, you might just want to build an automated copying + seding command which you run on your standard style sheets to create the mobile versions. That would allow you to just write/update the standard code and scrub away any style-rules which use :hover
for the mobile version of your pages.
Again here, you may be able to just add an extra rule or two to the stylesheets or be forced to do something slightly more complicated using sed or a similar utility. It would probably be easiest to apply :not to your styling rules like div:not(.disruptive):hover {...
wherein you would add class="disruptive"
to elements doing annoying things for mobile users using js or the server language, instead of munging the CSS.
(II) You can actually combine the first two and (if you suspect a user has wandered to the wrong version of a page) you can suggest that they switch into/out of the mobile-type display, or simply have a link somewhere which allows users to flop back and forth. As already-stated, @media queries might also be something to look use in determining what's being used to visit.
(III) If you're up for a jQuery solution once you know what devices are "touch" and which aren't, you might find CSS hover not being ignored on touch-screen devices helpful.
You want options(warn=-1)
. However, note that warn=0
is not the safest warning level and it should not be assumed as the current one, particularly within scripts or functions. Thus the safest way to temporary turn off warnings is:
oldw <- getOption("warn")
options(warn = -1)
[your "silenced" code]
options(warn = oldw)
Ehcache is a pretty good solution for this and has a way to peek (getQuiet() is the method) such that it doesn't update the idle timestamp. Internally, Ehcache is implemented with a set of maps, kind of like ConcurrentHashMap, so it has similar kinds of concurrency benefits.
I found that piping the array to the Out-String
cmdlet works well too.
For example:
PS C:\> $a | out-string
This
Is
a
cat
It depends on your end goal as to which method is the best to use.
If you have a parameter where you may need to indicate the absence of a value, it's common practice to make the parameter a pointer value and pass in NULL.
A better solution in most cases (from a safety perspective) is to use boost::optional. This allows you to pass in optional values by reference and also as a return value.
// Sample method using optional as input parameter
void PrintOptional(const boost::optional<std::string>& optional_str)
{
if (optional_str)
{
cout << *optional_str << std::endl;
}
else
{
cout << "(no string)" << std::endl;
}
}
// Sample method using optional as return value
boost::optional<int> ReturnOptional(bool return_nothing)
{
if (return_nothing)
{
return boost::optional<int>();
}
return boost::optional<int>(42);
}
You can always do it in your UIViews - (void)didMoveToSuperview
method. It will get called when added or removed from your parent (nil when removed). At that point in time just set your size to that of your parent. From that point on the autoresize mask should work properly.
Use the 'EntireColumn' property, that's what it is there for. C# snippet, but should give you a good indication of how to do this:
string rangeQuery = "A1:A1";
Range range = workSheet.get_Range(rangeQuery, Type.Missing);
range = range.EntireColumn;
The problem is that [...]
in python has two distinct meanings
expr [ index ]
means accessing an element of a list[ expr1, expr2, expr3 ]
means building a list of three elements from three expressionsIn your code you forgot the comma between the expressions for the items in the outer list:
[ [a, b, c] [d, e, f] [g, h, i] ]
therefore Python interpreted the start of second element as an index to be applied to the first and this is what the error message is saying.
The correct syntax for what you're looking for is
[ [a, b, c], [d, e, f], [g, h, i] ]
Wrong syntax. Here you are:
insert into user_by_category (game_category,customer_id) VALUES ('Goku','12');
or:
insert into user_by_category ("game_category","customer_id") VALUES ('Kakarot','12');
The second one is normally used for case-sensitive column names.
template <class T>
void transpose( const std::vector< std::vector<T> > & a,
std::vector< std::vector<T> > & b,
int width, int height)
{
for (int i = 0; i < width; i++)
{
for (int j = 0; j < height; j++)
{
b[j][i] = a[i][j];
}
}
}
The usual rules should apply for how you send the request. If the request is to retrieve information (e.g. a partial search 'hint' result, or a new page to be displayed, etc...) you can use GET. If the data being sent is part of a request to change something (update a database, delete a record, etc..) then use POST.
Server-side, there's no reason to use the raw input, unless you want to grab the entire post/get data block in a single go. You can retrieve the specific information you want via the _GET/_POST arrays as usual. AJAX libraries such as MooTools/jQuery will handle the hard part of doing the actual AJAX calls and encoding form data into appropriate formats for you.
Form native JavaScript checkValidity
function is more then enough to trigger the HTML5
validation
$(document).ready(function() {
$('#urlSubmit').click(function() {
if($('#urlForm')[0].checkValidity()) {
alert("form submitting");
}
});
});
Or:
SELECT SUM(foo), DATE(mydate) mydate FROM a_table GROUP BY mydate;
More efficient (I think.) Because you don't have to cast mydate twice per row.
Well when you post, the browser only outputs $title
- all your HTML tags and doctype go away. You need to include those in your insert.php
file:
<!DOCTYPE html PUBLIC"-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<title>insert page</title></head>
<body>
<?php
$title = $_POST["title"];
$price = $_POST["price"];
echo $title;
?>
</body>
</html>
Use for
, something along the lines of:
set content=
for /f "delims=" %%i in ('filename') do set content=%content% %%i
Maybe you’ll have to do setlocal enabledelayedexpansion
and/or use !content!
rather than %content%
. I can’t test, as I don’t have any MS Windows nearby (and I wish you the same :-).
The best batch-file-black-magic-reference I know of is at http://www.rsdn.ru/article/winshell/batanyca.xml. If you don’t know Russian, you still could make some use of the code snippets provided.
Try using a return statement. It works best. It stops the function when the condition is met.
function anything() {
var get = document.getElementsByClassName("text ").value;
if (get == null) {
alert("Please put in your name");
}
return;
var random = Math.floor(Math.random() * 100) + 1;
console.log(random);
}
<td style="border-bottom-style: solid; border-bottom: thick dotted #ff0000; ">
You can do the same to the whole row as well.
There is border-bottom-style
, border-top-style
,border-left-style
,border-right-style
. Or simply border-style
that apply to all four borders at once.
You can see (and TRY YOURSELF online) more details here
You can use overflow:auto;
You can also control the x or y axis individually with the overflow-x
and overflow-y
properties.
Example:
.content {overflow:auto;}
.content {overflow-y:auto;}
.content {overflow-x:auto;}
As for the page, I'm working on a higher order component that uses basically the above methods to do exactly this. It actually takes just a bit of time when you get down to the subtleties like initial layout and content changes. I won't claim to have done it 'correctly', but in some sense I'd consider the correct answer to use component that does this carefully and consistently.
See: react-native-paged-scroll-view. Would love feedback, even if it's that I've done it all wrong!
Use value instanceof YourClass
I have a windows 8.1 machine and mysql was not running at all even after trying to start mysqld with no error logs. This solution worked for me:
The mysqld service should now be available.
The way to do this is near the top of the man page
grep -i -A 10 'error data'
$('#formID')[0].reset(); // Reset all form fields
This refreshes the calculation better than Range(A:B).Calculate
:
Public Sub UpdateMyFunctions()
Dim myRange As Range
Dim rng As Range
' Assume the functions are in this range A1:B10.
Set myRange = ActiveSheet.Range("A1:B10")
For Each rng In myRange
rng.Formula = rng.Formula
Next
End Sub
I know this is old, but maybe this will help someone else.
Do not log "new" values. Your existing table, GUESTS, has the new values. You'll have double entry of data, plus your DB size will grow way too fast that way.
I cleaned this up and minimized it for this example, but here is the tables you'd need for logging off changes:
CREATE TABLE GUESTS (
GuestID INT IDENTITY(1,1) PRIMARY KEY,
GuestName VARCHAR(50),
ModifiedBy INT,
ModifiedOn DATETIME
)
CREATE TABLE GUESTS_LOG (
GuestLogID INT IDENTITY(1,1) PRIMARY KEY,
GuestID INT,
GuestName VARCHAR(50),
ModifiedBy INT,
ModifiedOn DATETIME
)
When a value changes in the GUESTS table (ex: Guest name), simply log off that entire row of data, as-is, to your Log/Audit table using the Trigger. Your GUESTS table has current data, the Log/Audit table has the old data.
Then use a select statement to get data from both tables:
SELECT 0 AS 'GuestLogID', GuestID, GuestName, ModifiedBy, ModifiedOn FROM [GUESTS] WHERE GuestID = 1
UNION
SELECT GuestLogID, GuestID, GuestName, ModifiedBy, ModifiedOn FROM [GUESTS_LOG] WHERE GuestID = 1
ORDER BY ModifiedOn ASC
Your data will come out with what the table looked like, from Oldest to Newest, with the first row being what was created & the last row being the current data. You can see exactly what changed, who changed it, and when they changed it.
Optionally, I used to have a function that looped through the RecordSet (in Classic ASP), and only displayed what values had changed on the web page. It made for a GREAT audit trail so that users could see what had changed over time.
just use following code
c = np.matrix([[1, 2, 3], [4, 5, 6], [7, 8, 9]])
matrix([[1, 2, 3],
[4, 5, 6],
[7, 8, 9]])
Then it will give you
you can check shape and dimension of matrix by using following code
c.shape
c.ndim
mysqld.exe was using 480 mb in RAM. I found that I added this parameter to my.ini
table_definition_cache = 400
that reduced memory usage from 400,000+ kb down to 105,000kb
This is a simple Python script that does just what you need:
#!/usr/bin/python
import sys
# Clipboard storage
clipboard_file = '/tmp/clipboard.tmp'
if(sys.stdin.isatty()): # Should write clipboard contents out to stdout
with open(clipboard_file, 'r') as c:
sys.stdout.write(c.read())
elif(sys.stdout.isatty()): # Should save stdin to clipboard
with open(clipboard_file, 'w') as c:
c.write(sys.stdin.read())
Save this as an executable somewhere in your path (I saved it to /usr/local/bin/clip
. You can pipe in stuff to be saved to your clipboard...
echo "Hello World" | clip
And you can pipe what's in your clipboard to some other program...
clip | cowsay
_____________
< Hello World >
-------------
\ ^__^
\ (oo)\_______
(__)\ )\/\
||----w |
|| ||
Running it by itself will simply output what's in the clipboard.
It can be done with nesting and using a little css over-ride.
<div class="col-sm-12">
<div class="row">
<div class="col-sm-7 five-three">
<div class="row">
<div class="col-sm-4">
Column 1
</div>
<div class="col-sm-4">
Column 2
</div>
<div class="col-sm-4">
Column 3
</div><!-- end inner row -->
</div>
</div>
<div class="col-sm-5 five-two">
<div class="row">
<div class="col-sm-6">
Col 4
</div>
<div class="col-sm-6">
Col 5
</div>
</div><!-- end inner row -->
</div>
</div>?<!-- end outer row -->
Then some css
@media (min-width: 768px) {
div.col-sm-7.five-three {
width: 60% !important;
}
div.col-sm-5.five-two {
width: 40% !important;
}
}
Here is an example: 5 equal column example
And here is my full write up on coderwall
Something swifty tested in swift 4
import UIKit
extension UIView {
@IBInspectable var dropShadow: Bool {
set{
if newValue {
layer.shadowColor = UIColor.black.cgColor
layer.shadowOpacity = 0.4
layer.shadowRadius = 1
layer.shadowOffset = CGSize.zero
} else {
layer.shadowColor = UIColor.clear.cgColor
layer.shadowOpacity = 0
layer.shadowRadius = 0
layer.shadowOffset = CGSize.zero
}
}
get {
return layer.shadowOpacity > 0
}
}
}
Produces
If you enable it in the Inspector like this:
It will add the User Defined Runtime Attribute, resulting in:
(I added previously the cornerRadius = 8
)
:)
Yep - 'E' does the trick
http://download.oracle.com/javase/6/docs/api/java/text/SimpleDateFormat.html
Date date = new Date();
DateFormat df = new SimpleDateFormat("yyyy-MM-E");
System.out.println(df.format(date));
@SuppressWarnings("unchecked")
private static <T extends Object> T cast(Object obj) {
return (T) obj;
}
uncomment ;extension=php_openssl.dll
in both
wamp\bin\php\php5.4.12\php.ini
wamp\bin\apache\Apache2.4.4\bin\php.ini
it will work
You should include bootstrap-datepicker.js
after bootstrap.js
and you should bind the datepicker
to your control.
$(function(){
$('.datepicker').datepicker({
format: 'mm-dd-yyyy'
});
});
It's not necessary to use nested form groups and a custom ErrorStateMatcher for confirm password validation. These steps were added to facilitate coordination between the password fields, but you can do that without all the overhead.
Here is an example:
this.registrationForm = this.fb.group({
username: ['', Validators.required],
email: ['', [Validators.required, Validators.email]],
password1: ['', [Validators.required, (control) => this.validatePasswords(control, 'password1') ] ],
password2: ['', [Validators.required, (control) => this.validatePasswords(control, 'password2') ] ]
});
Note that we are passing additional context to the validatePasswords method (whether the source is password1 or password2).
validatePasswords(control: AbstractControl, name: string) {
if (this.registrationForm === undefined || this.password1.value === '' || this.password2.value === '') {
return null;
} else if (this.password1.value === this.password2.value) {
if (name === 'password1' && this.password2.hasError('passwordMismatch')) {
this.password1.setErrors(null);
this.password2.updateValueAndValidity();
} else if (name === 'password2' && this.password1.hasError('passwordMismatch')) {
this.password2.setErrors(null);
this.password1.updateValueAndValidity();
}
return null;
} else {
return {'passwordMismatch': { value: 'The provided passwords do not match'}};
}
Note here that when the passwords match, we coordinate with the other password field to have its validation updated. This will clear any stale password mismatch errors.
And for completeness sake, here are the getters that define this.password1
and this.password2
.
get password1(): AbstractControl {
return this.registrationForm.get('password1');
}
get password2(): AbstractControl {
return this.registrationForm.get('password2');
}
If you are using a VPN, Turn it off and try to push again.
Probably the most definitive is Figure B.1(d) of the ggplot2 book, the appendices of which are available at http://ggplot2.org/book/appendices.pdf.
However, it is not quite that simple. hjust
and vjust
as described there are how it works in geom_text
and theme_text
(sometimes). One way to think of it is to think of a box around the text, and where the reference point is in relation to that box, in units relative to the size of the box (and thus different for texts of different size). An hjust
of 0.5 and a vjust
of 0.5 center the box on the reference point. Reducing hjust
moves the box right by an amount of the box width times 0.5-hjust
. Thus when hjust=0
, the left edge of the box is at the reference point. Increasing hjust
moves the box left by an amount of the box width times hjust-0.5
. When hjust=1
, the box is moved half a box width left from centered, which puts the right edge on the reference point. If hjust=2
, the right edge of the box is a box width left of the reference point (center is 2-0.5=1.5
box widths left of the reference point. For vertical, less is up and more is down. This is effectively what that Figure B.1(d) says, but it extrapolates beyond [0,1].
But, sometimes this doesn't work. For example
DF <- data.frame(x=c("a","b","cdefghijk","l"),y=1:4)
p <- ggplot(DF, aes(x,y)) + geom_point()
p + opts(axis.text.x=theme_text(vjust=0))
p + opts(axis.text.x=theme_text(vjust=1))
p + opts(axis.text.x=theme_text(vjust=2))
The three latter plots are identical. I don't know why that is. Also, if text is rotated, then it is more complicated. Consider
p + opts(axis.text.x=theme_text(hjust=0, angle=90))
p + opts(axis.text.x=theme_text(hjust=0.5 angle=90))
p + opts(axis.text.x=theme_text(hjust=1, angle=90))
p + opts(axis.text.x=theme_text(hjust=2, angle=90))
The first has the labels left justified (against the bottom), the second has them centered in some box so their centers line up, and the third has them right justified (so their right sides line up next to the axis). The last one, well, I can't explain in a coherent way. It has something to do with the size of the text, the size of the widest text, and I'm not sure what else.