The simplest way, based on @nosklo's comment and answer:
import tempfile
tmp = tempfile.mkdtemp()
But if you want to manually control the creation of the directories:
import os
from tempfile import gettempdir
tmp = os.path.join(gettempdir(), '.{}'.format(hash(os.times())))
os.makedirs(tmp)
That way you can easily clean up after yourself when you are done (for privacy, resources, security, whatever) with:
from shutil import rmtree
rmtree(tmp, ignore_errors=True)
This is similar to what applications like Google Chrome and Linux systemd
do. They just use a shorter hex hash and an app-specific prefix to "advertise" their presence.
With C++11 and std::chrono::high_resolution_clock
you can do this:
#include <iostream>
#include <chrono>
#include <thread>
typedef std::chrono::high_resolution_clock Clock;
int main()
{
std::chrono::milliseconds three_milliseconds{3};
auto t1 = Clock::now();
std::this_thread::sleep_for(three_milliseconds);
auto t2 = Clock::now();
std::cout << "Delta t2-t1: "
<< std::chrono::duration_cast<std::chrono::milliseconds>(t2 - t1).count()
<< " milliseconds" << std::endl;
}
Output:
Delta t2-t1: 3 milliseconds
Link to demo: http://cpp.sh/2zdtu
There are two additional ways to do it apart from the two methods mentioned in @PradeepJain's answer.
I would suggest not to use this approach and to fall back to this only as a last resort if you are not using [(ngModel)]
directive and also not using data binding via [value]
. Read this for more info.
app.component.html
<div>
<input type="text" #searchInput placeholder="Search...">
<button (click)="clearSearchInput()">Clear</button>
</div>
app.component.ts
export class App {
@ViewChild('searchInput') searchInput: ElementRef;
clearSearchInput(){
this.searchInput.nativeElement.value = '';
}
}
app.component.html
<form [formGroup]="form">
<div *ngIf="first.invalid"> Name is too short. </div>
<input formControlName="first" placeholder="First name">
<input formControlName="last" placeholder="Last name">
<button type="submit">Submit</button>
</form>
<button (click)="setValue()">Set preset value</button>
<button (click)="clearInputMethod1()">Clear Input Method 1</button>
<button (click)="clearInputMethod2()">Clear Input Method 2</button>
app.component.ts
export class AppComponent {
form = new FormGroup({
first: new FormControl('Nancy', Validators.minLength(2)),
last: new FormControl('Drew'),
});
get first(): any { return this.form.get('first'); }
get last(): any { return this.form.get('last'); }
clearInputMethod1() { this.first.reset(); this.last.reset(); }
clearInputMethod2() { this.form.setValue({first: '', last: ''}); }
setValue() { this.form.setValue({first: 'Nancy', last: 'Drew'}); }
}
Try it out on stackblitz Clearing input in a FormGroup
You forgot to add std::
namespace prefix to vector
class name.
If you want to sort objects but if class didn't implement Comparable or Comparator, then you will get ClassCastException For example
class Animal{
int age;
String type;
public Animal(int age, String type){
this.age = age;
this.type = type;
}
}
public class MainCls{
public static void main(String[] args){
Animal[] arr = {new Animal(2, "Her"), new Animal(3,"Car")};
Arrays.sort(arr);
}
}
Above main method will throw below runtime class cast exception
Exception in thread "main" java.lang.ClassCastException: com.default.Animal cannot be cast to java.lang.Comparable
In my case I had to specify the Port Number using
scp -P 2222 username@hostip:/directory/ /localdirectory/
Building on all the anwers using sys.stdin
, you can also do something like the following to read from an argument file if at least one argument exists, and fall back to stdin otherwise:
import sys
f = open(sys.argv[1]) if len(sys.argv) > 1 else sys.stdin
for line in f:
# Do your stuff
and use it as either
$ python do-my-stuff.py infile.txt
or
$ cat infile.txt | python do-my-stuff.py
or even
$ python do-my-stuff.py < infile.txt
That would make your Python script behave like many GNU/Unix programs such as cat
, grep
and sed
.
i install mysql for visual studio and the problem simply solved.although version of my visual studio is 2012!
If you want to remove EVERYTHING :
textarea {
border: none;
background-color: transparent;
resize: none;
outline: none;
}
I would prefer storing keys and values on separate arrays. This i often more practical. Structures of arrays are perfect replacement to array of structures. As most of the time you have to process only a subset of your data (in this cases keys or values, operation only with only one of the two arrays would be more efficient than operating with half of the two arrays together.
But in case this way is not possible, I would suggest to use arrays sorted by column instead of by row. In this way you would have the same benefit as having two arrays, but packed only in one.
import numpy as np
result = {0: 1.1181753789488595, 1: 0.5566080288678394, 2: 0.4718269778030734, 3: 0.48716683119447185, 4: 1.0, 5: 0.1395076201641266, 6: 0.20941558441558442}
names = 0
values = 1
array = np.empty(shape=(2, len(result)), dtype=float)
array[names] = result.keys()
array[values] = result.values()
But my favorite is this (simpler):
import numpy as np
result = {0: 1.1181753789488595, 1: 0.5566080288678394, 2: 0.4718269778030734, 3: 0.48716683119447185, 4: 1.0, 5: 0.1395076201641266, 6: 0.20941558441558442}
arrays = {'names': np.array(result.keys(), dtype=float),
'values': np.array(result.values(), dtype=float)}
The follow fix work for me
Windos server 2003 64 Reporting Services Windows Vista and Windows XP
Fix KB967511 and KB953752
http://support.microsoft.com/kb/967511/es
work for me
For this you probably want myString.PadRight(totalLength, charToInsert)
.
See String.PadRight Method (Int32) for more info.
CSS Keyframes support is pretty good these days:
.fade-in {_x000D_
opacity: 1;_x000D_
animation-name: fadeInOpacity;_x000D_
animation-iteration-count: 1;_x000D_
animation-timing-function: ease-in;_x000D_
animation-duration: 2s;_x000D_
}_x000D_
_x000D_
@keyframes fadeInOpacity {_x000D_
0% {_x000D_
opacity: 0;_x000D_
}_x000D_
100% {_x000D_
opacity: 1;_x000D_
}_x000D_
}
_x000D_
<h1 class="fade-in">Fade Me Down Scotty</h1>
_x000D_
I made a PHP script that automatically adds the timestamps for all images in the HTML page. You just need to include this script in your pages. Enjoy!
http://alv90.altervista.org/how-to-force-the-browser-not-to-cache-images/
This post is old enough that this answer will probably be little use to the OP, but I spent forever trying to answer this same question, so I thought I would update it with my findings.
This answer assumes that you already have a working SQL query in place in your Excel document. There are plenty of tutorials to show you how to accomplish this on the web, and plenty that explain how to add a parameterized query to one, except that none seem to work for an existing, OLE DB query.
So, if you, like me, got handed a legacy Excel document with a working query, but the user wants to be able to filter the results based on one of the database fields, and if you, like me, are neither an Excel nor a SQL guru, this might be able to help you out.
Most web responses to this question seem to say that you should add a “?” in your query to get Excel to prompt you for a custom parameter, or place the prompt or the cell reference in [brackets] where the parameter should be. This may work for an ODBC query, but it does not seem to work for an OLE DB, returning “No value given for one or more required parameters” in the former instance, and “Invalid column name ‘xxxx’” or “Unknown object ‘xxxx’” in the latter two. Similarly, using the mythical “Parameters…” or “Edit Query…” buttons is also not an option as they seem to be permanently greyed out in this instance. (For reference, I am using Excel 2010, but with an Excel 97-2003 Workbook (*.xls))
What we can do, however, is add a parameter cell and a button with a simple routine to programmatically update our query text.
First, add a row above your external data table (or wherever) where you can put a parameter prompt next to an empty cell and a button (Developer->Insert->Button (Form Control) – You may need to enable the Developer tab, but you can find out how to do that elsewhere), like so:
Next, select a cell in the External Data (blue) area, then open Data->Refresh All (dropdown)->Connection Properties… to look at your query. The code in the next section assumes that you already have a parameter in your query (Connection Properties->Definition->Command Text) in the form “WHERE (DB_TABLE_NAME.Field_Name = ‘Default Query Parameter')” (including the parentheses). Clearly “DB_TABLE_NAME.Field_Name” and “Default Query Parameter” will need to be different in your code, based on the database table name, database value field (column) name, and some default value to search for when the document is opened (if you have auto-refresh set). Make note of the “DB_TABLE_NAME.Field_Name” value as you will need it in the next section, along with the “Connection name” of your query, which can be found at the top of the dialog.
Close the Connection Properties, and hit Alt+F11 to open the VBA editor. If you are not on it already, right click on the name of the sheet containing your button in the “Project” window, and select “View Code”. Paste the following code into the code window (copying is recommended, as the single/double quotes are dicey and necessary).
Sub RefreshQuery()
Dim queryPreText As String
Dim queryPostText As String
Dim valueToFilter As String
Dim paramPosition As Integer
valueToFilter = "DB_TABLE_NAME.Field_Name ="
With ActiveWorkbook.Connections("Connection name").OLEDBConnection
queryPreText = .CommandText
paramPosition = InStr(queryPreText, valueToFilter) + Len(valueToFilter) - 1
queryPreText = Left(queryPreText, paramPosition)
queryPostText = .CommandText
queryPostText = Right(queryPostText, Len(queryPostText) - paramPosition)
queryPostText = Right(queryPostText, Len(queryPostText) - InStr(queryPostText, ")") + 1)
.CommandText = queryPreText & " '" & Range("Cell reference").Value & "'" & queryPostText
End With
ActiveWorkbook.Connections("Connection name").Refresh
End Sub
Replace “DB_TABLE_NAME.Field_Name” and "Connection name" (in two locations) with your values (the double quotes and the space and equals sign need to be included).
Replace "Cell reference" with the cell where your parameter will go (the empty cell from the beginning) - mine was the second cell in the first row, so I put “B1” (again, the double quotes are necessary).
Save and close the VBA editor.
Enter your parameter in the appropriate cell.
Right click your button to assign the RefreshQuery sub as the macro, then click your button. The query should update and display the right data!
Notes: Using the entire filter parameter name ("DB_TABLE_NAME.Field_Name =") is only necessary if you have joins or other occurrences of equals signs in your query, otherwise just an equals sign would be sufficient, and the Len() calculation would be superfluous. If your parameter is contained in a field that is also being used to join tables, you will need to change the "paramPosition = InStr(queryPreText, valueToFilter) + Len(valueToFilter) - 1" line in the code to "paramPosition = InStr(Right(.CommandText, Len(.CommandText) - InStrRev(.CommandText, "WHERE")), valueToFilter) + Len(valueToFilter) - 1 + InStr(.CommandText, "WHERE")" so that it only looks for the valueToFilter after the "WHERE".
This answer was created with the aid of datapig’s “BaconBits” where I found the base code for the query update.
IIRC, it involves garbage collection strategies. The theory is that a client and server will be different in terms of short-lived objects, which is important for modern GC algorithms.
Here is a link on server mode. Alas, they don't mention client mode.
Here is a very thorough link on GC in general; this is a more basic article. Not sure if either address -server vs -client but this is relevant material.
At No Fluff Just Stuff, both Ken Sipe and Glenn Vandenburg do great talks on this kind of thing.
to add to John's answer:
what you want to pass to the shuffle
function is a deck of cards from the class deckOfCards
that you've declared in main; however, the deck of cards or vector<Card> deck
that you've declared in your class is private, so not accessible from outside the class. this means you'd want a getter function, something like this:
class deckOfCards
{
private:
vector<Card> deck;
public:
deckOfCards();
static int count;
static int next;
void shuffle(vector<Card>& deck);
Card dealCard();
bool moreCards();
vector<Card>& getDeck() { //GETTER
return deck;
}
};
this will in turn allow you to call your shuffle function from main like this:
deckOfCards cardDeck; // create DeckOfCards object
cardDeck.shuffle(cardDeck.getDeck()); // shuffle the cards in the deck
however, you have more problems, specifically when calling cout
. first, you're calling the dealCard
function wrongly; as dealCard
is a memeber function of a class, you should be calling it like this cardDeck.dealCard();
instead of this dealCard(cardDeck);
.
now, we come to your second problem - print to standard output. you're trying to print your deal card, which is an object of type Card
by using the following instruction:
cout << cardDeck.dealCard();// deal the cards in the deck
yet, the cout
doesn't know how to print it, as it's not a standard type. this means you should overload your <<
operator to print whatever you want it to print when calling with a Card
type.
Use Ctrl-N to get a list of word suggestions while in insert mode. Type :help i_CTRL-N
to see Vim's documentation on this functionality.
Here is an example of importing the Python dictionary into Vim.
if you want both always a return value but never a null value you can combine count with coalesce :
select count(field1), coalesce(field1,'any_other_default_value') from table;
that because count, will force mysql to always return a value (0 if there is no values to count) and coalesce will force mysql to always put a value that is not null
I've been struggling with this myself and I finally believe I have it figured out. It's incredible how many failed answers there are on this question
All you have to do is remove the padding from all your .col elements, and remove the padding also from the .container-fluid.
I did this in my own project a little sloppily by adding the following to my css file:
.col, col-10, col-12, col-2, col-6 {
padding: 0!important;
}
.container-fluid {
padding: 0!important;
}
I just have the different col sizes there to account for all the different col sizes I'm using. I'm confident there is a cleaner way to write the css but this illustrates the end result.
Following @VonC great answer. Your GitHub company policy might not allow 'force push' on master.
remote: error: GH003: Sorry, force-pushing to master is not allowed.
If you get an error message like this one please try the following steps.
To effectively reset your fork you need to follow these steps :
git checkout master
git reset --hard upstream/master
git checkout -b tmp_master
git push origin
Open your fork on GitHub, in "Settings -> Branches -> Default branch" choose 'new_master' as the new default branch. Now you can force push on the 'master' branch :
git checkout master
git push --force origin
Then you must set back 'master' as the default branch in the GitHub settings. To delete 'tmp_master' :
git push origin --delete tmp_master
git branch -D tmp_master
Other answers warning about lossing your change still apply, be carreful.
You can make method which return the datatable of given sql query:
public DataTable GetDataTable()
{
SqlConnection conn = new SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["BarManConnectionString"].ConnectionString);
conn.Open();
string query = "SELECT * FROM [EventOne] ";
SqlCommand cmd = new SqlCommand(query, conn);
DataTable t1 = new DataTable();
using (SqlDataAdapter a = new SqlDataAdapter(cmd))
{
a.Fill(t1);
}
return t1;
}
and now can be used like this:
table = GetDataTable();
If you don't want jquery then you can do it with javascript :-
@Html.DropDownList("Sortby", new SelectListItem[]
{
new SelectListItem() { Text = "Newest to Oldest", Value = "0" },
new SelectListItem() { Text = "Oldest to Newest", Value = "1" }},
new { @onchange="callChangefunc(this.value)"
});
<script>
function callChangefunc(val){
window.location.href = "/Controller/ActionMethod?value=" + val;
}
</script>
Here's one way to do it:
if not any(d['main_color'] == 'red' for d in a):
# does not exist
The part in parentheses is a generator expression that returns True
for each dictionary that has the key-value pair you are looking for, otherwise False
.
If the key could also be missing the above code can give you a KeyError
. You can fix this by using get
and providing a default value. If you don't provide a default value, None
is returned.
if not any(d.get('main_color', default_value) == 'red' for d in a):
# does not exist
This question has been asked and answered many times:
Read file from serial port using Java
Reading file from serial port in Java
Is there Java library or framework for accessing Serial ports?
Java Serial Communication on Windows
to reference a few.
Personally I recommend SerialPort from http://serialio.com - it's not free, but it's well worth the developer (no royalties) licensing fee for any commercial project. Sadly, it is no longer royalty free to deploy, and SerialIO.com seems to have remade themselves as a hardware seller; I had to search for information on SerialPort.
From personal experience, I strongly recommend against the Sun, IBM and RxTx implementations, all of which were unstable in 24/7 use. Refer to my answers on some of the aforementioned questions for details. To be perfectly fair, RxTx may have come a long way since I tried it, though the Sun and IBM implementations were essentially abandoned, even back then.
A newer free option that looks promising and may be worth trying is jSSC (Java Simple Serial Connector), as suggested by @Jodes comment.
You can check by visiting the site in your browser and viewing the certificate that the browser received. The details of how to do that can vary from browser to browser, but generally if you click or right-click on the lock icon, there should be an option to view the certificate details.
In the list of certificate fields, look for one called "Certificate Signature Algorithm". (For StackOverflow's certificate, its value is "PKCS #1 SHA-1 With RSA Encryption".)
this code will help to change the oldkey to new one
$i = 0;
$keys_array=array("0"=>"one","1"=>"two");
$keys = array_keys($keys_array);
for($i=0;$i<count($keys);$i++) {
$keys_array[$keys_array[$i]]=$keys_array[$i];
unset($keys_array[$i]);
}
print_r($keys_array);
display like
$keys_array=array("one"=>"one","two"=>"two");
Without doing this %config IPCompleter.greedy=True
after you import a package like numpy or pandas in this way;
import numpy as np
import pandas as pd
.
Then you type in pd.
then tap the tab button it brings out all the possible methods to use very easy and straight forward.
Or, as an alternative to @Chase's code, being a recent plyr fan with a background in databases:
require(plyr)
zz<-join(df1, df2, type="left")
zz[is.na(zz)] <- 0
If you want all the bars to get the same color (fill
), you can easily add it inside geom_bar
.
ggplot(data=df, aes(x=c1+c2/2, y=c3)) +
geom_bar(stat="identity", width=c2, fill = "#FF6666")
Add fill = the_name_of_your_var
inside aes
to change the colors depending of the variable :
c4 = c("A", "B", "C")
df = cbind(df, c4)
ggplot(data=df, aes(x=c1+c2/2, y=c3, fill = c4)) +
geom_bar(stat="identity", width=c2)
Use scale_fill_manual()
if you want to manually the change of colors.
ggplot(data=df, aes(x=c1+c2/2, y=c3, fill = c4)) +
geom_bar(stat="identity", width=c2) +
scale_fill_manual("legend", values = c("A" = "black", "B" = "orange", "C" = "blue"))
Yes, it's possible. But first read, "What happens when I change my username?"
To change your username, click your profile picture in the top right corner, then click Settings
. On the left side, click Account
. Then click Change username
.
[TestCase("11/08/1995", Result= true)]
[TestCase("1-1", Result = false)]
[TestCase("1/1", Result = false)]
public bool IsValidDateTimeTest(string dateTime)
{
string[] formats = { "MM/dd/yyyy" };
DateTime parsedDateTime;
return DateTime.TryParseExact(dateTime, formats, new CultureInfo("en-US"),
DateTimeStyles.None, out parsedDateTime);
}
Simply specify the date time formats that you wish to accept in the array named formats.
I changed my project to use Androidx, so I used the migration tool but some files(many files), didn't change automatically. I opened each file (activities, enums, fragments) and I found so many errors. I corrected them but the compile still show me incomprehensible errors. After looking for a solution I found this answer that someone said:
go to Analyze >> Inspect code
Whole Project:
It took some time and then showed me the result below:
As I corrected the errors I thought were important, I was running the build until the remaining errors were no longer affecting the build.
My Android Studio details
First you should use print_r($_FILES)
to debug, and see what it contains. :
your uploads.php
would look like:
//This is the directory where images will be saved
$target = "pics/";
$target = $target . basename( $_FILES['Filename']['name']);
//This gets all the other information from the form
$Filename=basename( $_FILES['Filename']['name']);
$Description=$_POST['Description'];
//Writes the Filename to the server
if(move_uploaded_file($_FILES['Filename']['tmp_name'], $target)) {
//Tells you if its all ok
echo "The file ". basename( $_FILES['Filename']['name']). " has been uploaded, and your information has been added to the directory";
// Connects to your Database
mysql_connect("localhost", "root", "") or die(mysql_error()) ;
mysql_select_db("altabotanikk") or die(mysql_error()) ;
//Writes the information to the database
mysql_query("INSERT INTO picture (Filename,Description)
VALUES ('$Filename', '$Description')") ;
} else {
//Gives and error if its not
echo "Sorry, there was a problem uploading your file.";
}
?>
EDIT: Since this is old post, currently it is strongly recommended to use either mysqli or pdo instead mysql_ functions in php
In ef core, you can change the migration that was created after add migration. And then do update-database. A sample has given below:
protected override void Up(MigrationBuilder migrationBuilder)
{
migrationBuilder.RenameColumn(name: "Type", table: "Users", newName: "Discriminator", schema: "dbo");
}
protected override void Down(MigrationBuilder migrationBuilder)
{
migrationBuilder.RenameColumn(name: "Discriminator", table: "Users", newName: "Type", schema: "dbo");
}
HTTPS proxy doesn't make sense because you can't terminate your HTTP connection at the proxy for security reasons. With your trust policy, it might work if the proxy server has a HTTPS port. Your error is caused by connecting to HTTP proxy port with HTTPS.
You can connect through a proxy using SSL tunneling (many people call that proxy) using proxy CONNECT command. However, Java doesn't support newer version of proxy tunneling. In that case, you need to handle the tunneling yourself. You can find sample code here,
http://www.javaworld.com/javaworld/javatips/jw-javatip111.html
EDIT: If you want defeat all the security measures in JSSE, you still need your own TrustManager. Something like this,
public SSLTunnelSocketFactory(String proxyhost, String proxyport){
tunnelHost = proxyhost;
tunnelPort = Integer.parseInt(proxyport);
dfactory = (SSLSocketFactory)sslContext.getSocketFactory();
}
...
connection.setSSLSocketFactory( new SSLTunnelSocketFactory( proxyHost, proxyPort ) );
connection.setDefaultHostnameVerifier( new HostnameVerifier()
{
public boolean verify( String arg0, SSLSession arg1 )
{
return true;
}
} );
EDIT 2: I just tried my program I wrote a few years ago using SSLTunnelSocketFactory and it doesn't work either. Apparently, Sun introduced a new bug sometime in Java 5. See this bug report,
http://bugs.sun.com/view_bug.do?bug_id=6614957
The good news is that the SSL tunneling bug is fixed so you can just use the default factory. I just tried with a proxy and everything works as expected. See my code,
public class SSLContextTest {
public static void main(String[] args) {
System.setProperty("https.proxyHost", "proxy.xxx.com");
System.setProperty("https.proxyPort", "8888");
try {
SSLContext sslContext = SSLContext.getInstance("SSL");
// set up a TrustManager that trusts everything
sslContext.init(null, new TrustManager[] { new X509TrustManager() {
public X509Certificate[] getAcceptedIssuers() {
System.out.println("getAcceptedIssuers =============");
return null;
}
public void checkClientTrusted(X509Certificate[] certs,
String authType) {
System.out.println("checkClientTrusted =============");
}
public void checkServerTrusted(X509Certificate[] certs,
String authType) {
System.out.println("checkServerTrusted =============");
}
} }, new SecureRandom());
HttpsURLConnection.setDefaultSSLSocketFactory(
sslContext.getSocketFactory());
HttpsURLConnection
.setDefaultHostnameVerifier(new HostnameVerifier() {
public boolean verify(String arg0, SSLSession arg1) {
System.out.println("hostnameVerifier =============");
return true;
}
});
URL url = new URL("https://www.verisign.net");
URLConnection conn = url.openConnection();
BufferedReader reader =
new BufferedReader(new InputStreamReader(conn.getInputStream()));
String line;
while ((line = reader.readLine()) != null) {
System.out.println(line);
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
This is what I get when I run the program,
checkServerTrusted =============
hostnameVerifier =============
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
......
As you can see, both SSLContext and hostnameVerifier are getting called. HostnameVerifier is only involved when the hostname doesn't match the cert. I used "www.verisign.net" to trigger this.
Digging this up, in case anyone comes across it in the future. I used the above code as intended, but then ran into an issue displaying the table after it had been submitted to a database. It's much easier once you've stored the data to use PHP to replace the new lines and tabs in your query. You may perform the replace upon submission, $_POST[request] would be the name of your textarea:
$postrequest = trim($_POST[request]);
$dirty = array("\n", "\t");
$clean = array('</tr><tr><td>', '</td><td>');
$request = str_replace($dirty, $clean, $postrequest);
Now just insert $request into your database, and it will be stored as an HTML table.
npm uninstall --save package_name
or npm uninstall --save-dev package_name
npm unlink package_name
then follow step 1note rnpm as is deprecated
So, this is the latest solution if anyone get's stuck like I did today especially, for R.Java
file.
If you have lost the count of:
- Clean Project
- Rebuild Project
- Invalidate Caches / Restart
- deleted .gradle folder
- deleted .idea folder
- deleted app/build/generated folder
- checked your xml files
- checked your drawables and strings
then try this:
check your classpath dependency in your Project Gradle Scripts and if it's, this:
classpath 'com.android.tools.build:gradle:3.3.2'
then downgrade it to, this:
classpath 'com.android.tools.build:gradle:3.2.1'
What you can do is the following;
Add a file called ROOT.xml
in <catalina_home>/conf/Catalina/localhost/
This ROOT.xml will override the default settings for the root context of the tomcat installation for that engine and host (Catalina and localhost).
Enter the following to the ROOT.xml file;
<Context
docBase="<yourApp>"
path=""
reloadable="true"
/>
Here, <yourApp>
is the name of, well, your app.. :)
And there you go, your application is now the default application and will show up on http://localhost:8080
However, there is one side effect; your application will be loaded twice. Once for localhost:8080
and once for localhost:8080/yourApp
. To fix this you can put your application OUTSIDE <catalina_home>/webapps
and use a relative or absolute path in the ROOT.xml's docBase tag. Something like this;
<Context
docBase="/opt/mywebapps/<yourApp>"
path=""
reloadable="true"
/>
And then it should be all OK!
You can use below code to get all the privileges list from all users.
select * from dba_sys_privs
-- The application accepts input, in this case 'Nancy', without attempting to -- sanitize the input, such as by escaping special characters school=> INSERT INTO students VALUES ('Nancy'); INSERT 0 1 -- SQL injection occurs when input into a database command is manipulated to -- cause the database server to execute arbitrary SQL school=> INSERT INTO students VALUES ('Robert'); DROP TABLE students; --'); INSERT 0 1 DROP TABLE -- The student records are now gone - it could have been even worse! school=> SELECT * FROM students; ERROR: relation "students" does not exist LINE 1: SELECT * FROM students; ^
(All code examples in this answer were run on a PostgreSQL 9.1.2 database server.)
To make it clear what's happening, let's try this with a simple table containing only the name field and add a single row:
school=> CREATE TABLE students (name TEXT PRIMARY KEY); NOTICE: CREATE TABLE / PRIMARY KEY will create implicit index "students_pkey" for table "students" CREATE TABLE school=> INSERT INTO students VALUES ('John'); INSERT 0 1
Let's assume the application uses the following SQL to insert data into the table:
INSERT INTO students VALUES ('foobar');
Replace foobar
with the actual name of the student. A normal insert operation would look like this:
-- Input: Nancy school=> INSERT INTO students VALUES ('Nancy'); INSERT 0 1
When we query the table, we get this:
school=> SELECT * FROM students; name ------- John Nancy (2 rows)
What happens when we insert Little Bobby Tables's name into the table?
-- Input: Robert'); DROP TABLE students; -- school=> INSERT INTO students VALUES ('Robert'); DROP TABLE students; --'); INSERT 0 1 DROP TABLE
The SQL injection here is the result of the name of the student terminating the statement and including a separate DROP TABLE
command; the two dashes at the end of the input are intended to comment out any leftover code that would otherwise cause an error. The last line of the output confirms that the database server has dropped the table.
It's important to notice that during the INSERT
operation the application isn't checking the input for any special characters, and is therefore allowing arbitrary input to be entered into the SQL command. This means that a malicious user can insert, into a field normally intended for user input, special symbols such as quotes along with arbitrary SQL code to cause the database system to execute it, hence SQL injection.
The result?
school=> SELECT * FROM students; ERROR: relation "students" does not exist LINE 1: SELECT * FROM students; ^
SQL injection is the database equivalent of a remote arbitrary code execution vulnerability in an operating system or application. The potential impact of a successful SQL injection attack cannot be underestimated--depending on the database system and application configuration, it can be used by an attacker to cause data loss (as in this case), gain unauthorized access to data, or even execute arbitrary code on the host machine itself.
As noted by the XKCD comic, one way of protecting against SQL injection attacks is to sanitize database inputs, such as by escaping special characters, so that they cannot modify the underlying SQL command and therefore cannot cause execution of arbitrary SQL code. If you use parameterized queries, such as by using SqlParameter
in ADO.NET, the input will, at minimum, be automatically sanitized to guard against SQL injection.
However, sanitizing inputs at the application level may not stop more advanced SQL injection techniques. For example, there are ways to circumvent the mysql_real_escape_string
PHP function. For added protection, many database systems support prepared statements. If properly implemented in the backend, prepared statements can make SQL injection impossible by treating data inputs as semantically separate from the rest of the command.
If you don't want to use a download manager then you can use this code
webView.setDownloadListener(new DownloadListener() {
@Override
public void onDownloadStart(String url, String userAgent, String contentDisposition
, String mimetype, long contentLength) {
String fileName = URLUtil.guessFileName(url, contentDisposition, mimetype);
try {
String address = Environment.getExternalStorageDirectory().getAbsolutePath() + "/"
+ Environment.DIRECTORY_DOWNLOADS + "/" +
fileName;
File file = new File(address);
boolean a = file.createNewFile();
URL link = new URL(url);
downloadFile(link, address);
} catch (Exception e) {
e.printStackTrace();
}
}
});
public void downloadFile(URL url, String outputFileName) throws IOException {
try (InputStream in = url.openStream();
ReadableByteChannel rbc = Channels.newChannel(in);
FileOutputStream fos = new FileOutputStream(outputFileName)) {
fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
}
// do your work here
}
This will download files in the downloads folder in phone storage. You can use threads if you want to download that in the background (use thread.alive() and timer class to know the download is complete or not). This is useful when we download small files, as you can do the next task just after the download.
If all the keys are strings and all of them have the underscore prefix, then you can patch up the hash in place with this:
h.keys.each { |k| h[k[1, k.length - 1]] = h[k]; h.delete(k) }
The k[1, k.length - 1]
bit grabs all of k
except the first character. If you want a copy, then:
new_h = Hash[h.map { |k, v| [k[1, k.length - 1], v] }]
Or
new_h = h.inject({ }) { |x, (k,v)| x[k[1, k.length - 1]] = v; x }
You could also use sub
if you don't like the k[]
notation for extracting a substring:
h.keys.each { |k| h[k.sub(/\A_/, '')] = h[k]; h.delete(k) }
Hash[h.map { |k, v| [k.sub(/\A_/, ''), v] }]
h.inject({ }) { |x, (k,v)| x[k.sub(/\A_/, '')] = v; x }
And, if only some of the keys have the underscore prefix:
h.keys.each do |k|
if(k[0,1] == '_')
h[k[1, k.length - 1]] = h[k]
h.delete(k)
end
end
Similar modifications can be done to all the other variants above but these two:
Hash[h.map { |k, v| [k.sub(/\A_/, ''), v] }]
h.inject({ }) { |x, (k,v)| x[k.sub(/\A_/, '')] = v; x }
should be okay with keys that don't have underscore prefixes without extra modifications.
I had similar problem. On my page first input is text box with jQuery UI calendar. Second element is button. As date already have value, I set focus on button, but first add trigger for blur on text box. This solve problem in all browsers and probably in all version of jQuery. Tested in version 1.8.2.
<div style="padding-bottom: 30px; height: 40px; width: 100%;">
@using (Html.BeginForm("Statistics", "Admin", FormMethod.Post, new { id = "FormStatistics" }))
{
<label style="float: left;">@Translation.StatisticsChooseDate</label>
@Html.TextBoxFor(m => m.SelectDate, new { @class = "js-date-time", @tabindex=1 })
<input class="button gray-button button-large button-left-margin text-bold" style="position:relative; top:-5px;" type="submit" id="ButtonStatisticsSearchTrips" value="@Translation.StatisticsSearchTrips" tabindex="2"/>
}
<script type="text/javascript">
$(document).ready(function () {
$("#SelectDate").blur(function () {
$("#SelectDate").datepicker("hide");
});
$("#ButtonStatisticsSearchTrips").focus();
});
document.getElementById('id1').bgColor = '#00FF00';
seems to work. I don't think .style.backgroundColor
does.
The only way I can think of doing this is by creating a method that gives you the property using Object.keys();
.
var obj = {
dog: "woof",
cat: "meow",
key: function(n) {
return this[Object.keys(this)[n]];
}
};
obj.key(1); // "meow"
Demo: http://jsfiddle.net/UmkVn/
It would be possible to extend this to all objects using Object.prototype;
but that isn't usually recommended.
Instead, use a function helper:
var object = {
key: function(n) {
return this[ Object.keys(this)[n] ];
}
};
function key(obj, idx) {
return object.key.call(obj, idx);
}
key({ a: 6 }, 0); // 6
Long i = 1000000;
String s = i + "";
Double d = Double.parseDouble(s);
Float f = Float.parseFloat(s);
This way we can convert Long type to Double or Float or Int without any problem because it's easy to convert string value to Double or Float or Int.
I create a plugin to implement in most of languages: http://leocaseiro.com.br/jquery-plugin-string-to-slug/
Default Usage:
$(document).ready( function() {
$("#string").stringToSlug();
});
Is very easy has stringToSlug jQuery Plugin
Why not use some br
s?
<div class="mydiv-centerer">
<div class="mydiv">Some content</div><br />
<div class="mydiv">More content than before</div><br />
<div class="mydiv">Here is a lot of content that
I was not anticipating</div>
</div>
CSS
.mydiv-centerer{
text-align: center;
}
.mydiv{
background: none no-repeat scroll 0 0 rgba(1, 56, 110, 0.7);
border-radius: 10px 10px 10px 10px;
box-shadow: 0 0 5px #0099FF;
color: white;
margin: 10px auto;
padding: 10px;
text-align: justify;
display:inline-block;
}
Example: http://jsfiddle.net/YZV25/
You are not returning a response object from your view my_form_post
. The function ends with implicit return None
, which Flask does not like.
Make the function my_form_post
return an explicit response, for example
return 'OK'
at the end of the function.
In my personal experience, it's difficult to enable shared folders in VirtualBox but it Is posible. I have a debian Buster guest virtual machine installed in my Windows 10 host.
I don't recognize exactly what did it, but I remember I went to Windows defender, my antivirus to see if they recognize VirtualBox as a program and not as a virus. After that, I press right click on the document file and allowed to share the folder and I gave click to some buttons there and accepted to share with groups and with muy user in Windows 10.
Also, I found a webpage of Windows about something like virtual machines that I don't remember well, but it took me to a panel and I had to change three things double clicking so when I update Windows, it recognizes my virtual machine. Also, in muy debian, in the terminal, using some command lines, muy VirtualBox recognized my user giving permissions, I based on some info in the Ubuntu forums. I put all what I remember.
Alternatively, try using .html
and then wrap with <pre>
tags:
$(someElem).html('this\n has\n newlines').wrap('<pre />');
You may use 'inf' like this:
import math
bool_true = 0 < math.inf
bool_false = 0 < -math.inf
I'm not sure if is this that you want but there is jqGrid. It can receive JSON and make a grid.
Both or
and ||
evaluate to true if either operand is true. They evaluate their second operand only if the first is false.
As with and
, the only difference between or
and ||
is their precedence.
Just to make life interesting, and
and or
have the same precedence, while &&
has a higher precedence than ||
.
You might need to change the line
@RequestMapping(value = "/add", method = RequestMethod.GET)
to
@RequestMapping(value = "/add", method = {RequestMethod.GET,RequestMethod.POST})
You need to delete all "_maven.repositories" files from your repository.
Assuming you want to use numpy
, you can numerically compute the derivative of a function at any point using the Rigorous definition:
def d_fun(x):
h = 1e-5 #in theory h is an infinitesimal
return (fun(x+h)-fun(x))/h
You can also use the Symmetric derivative for better results:
def d_fun(x):
h = 1e-5
return (fun(x+h)-fun(x-h))/(2*h)
Using your example, the full code should look something like:
def fun(x):
return x**2 + 1
def d_fun(x):
h = 1e-5
return (fun(x+h)-fun(x-h))/(2*h)
Now, you can numerically find the derivative at x=5
:
In [1]: d_fun(5)
Out[1]: 9.999999999621423
If you want to use patch you need to remove the a/
b/
prefixes that git uses by default. You can do this with the --no-prefix
option (you can also do this with patch's -p
option):
git diff --no-prefix [<other git-diff arguments>]
Usually though, it is easier to use straight git diff
and then use the output to feed to git apply
.
Most of the time I try to avoid using textual patches. Usually one or more of temporary commits combined with rebase, git stash
and bundles are easier to manage.
For your use case I think that stash
is most appropriate.
# save uncommitted changes
git stash
# do a merge or some other operation
git merge some-branch
# re-apply changes, removing stash if successful
# (you may be asked to resolve conflicts).
git stash pop
Loops are also very useful to learn about, esp When using arrays,
int[] array = new int[10];
Random rand = new Random();
for (int i = 0; i < array.length; i++)
array[i] = rand.nextInt(100) + 1;
Arrays.sort(array);
System.out.println(Arrays.toString(array));
// in reverse order
for (int i = array.length - 1; i >= 0; i--)
System.out.print(array[i] + " ");
System.out.println();
This version uses the str.format method.
Python 2.7 and newer
sys.stdout.write("{:<7}{:<51}{:<25}\n".format(code, name, industry))
Python 2.6 version
sys.stdout.write("{0:<7}{1:<51}{2:<25}\n".format(code, name, industry))
UPDATE
Previously there was a statement in the docs about the % operator being removed from the language in the future. This statement has been removed from the docs.
It's the array that's causing trouble in:
void print_graph(g_node graph_node[], double weight[][], int nodes);
The second and subsequent dimensions must be given:
void print_graph(g_node graph_node[], double weight[][32], int nodes);
Or you can just give a pointer to pointer:
void print_graph(g_node graph_node[], double **weight, int nodes);
However, although they look similar, those are very different internally.
If you're using C99, you can use variably-qualified arrays. Quoting an example from the C99 standard (section §6.7.5.2 Array Declarators):
void fvla(int m, int C[m][m]); // valid: VLA with prototype scope
void fvla(int m, int C[m][m]) // valid: adjusted to auto pointer to VLA
{
typedef int VLA[m][m]; // valid: block scope typedef VLA
struct tag {
int (*y)[n]; // invalid: y not ordinary identifier
int z[n]; // invalid: z not ordinary identifier
};
int D[m]; // valid: auto VLA
static int E[m]; // invalid: static block scope VLA
extern int F[m]; // invalid: F has linkage and is VLA
int (*s)[m]; // valid: auto pointer to VLA
extern int (*r)[m]; // invalid: r has linkage and points to VLA
static int (*q)[m] = &B; // valid: q is a static block pointer to VLA
}
[...] In my main(), the variable I am trying to pass into the function is a
double array[][]
, so how would I pass that into the function? Passingarray[0][0]
into it gives me incompatible argument type, as does&array
and&array[0][0]
.
In your main()
, the variable should be:
double array[10][20];
or something faintly similar; maybe
double array[][20] = { { 1.0, 0.0, ... }, ... };
You should be able to pass that with code like this:
typedef struct graph_node
{
int X;
int Y;
int active;
} g_node;
void print_graph(g_node graph_node[], double weight[][20], int nodes);
int main(void)
{
g_node g[10];
double array[10][20];
int n = 10;
print_graph(g, array, n);
return 0;
}
That compiles (to object code) cleanly with GCC 4.2 (i686-apple-darwin11-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.9.00)) and also with GCC 4.7.0 on Mac OS X 10.7.3 using the command line:
/usr/bin/gcc -O3 -g -std=c99 -Wall -Wextra -c zzz.c
Here is a helper function to perform a simple Cartesian product with two data frames. The internal logic handles using an internal key, and avoids mangling any columns that happen to be named "key" from either side.
import pandas as pd
def cartesian(df1, df2):
"""Determine Cartesian product of two data frames."""
key = 'key'
while key in df1.columns or key in df2.columns:
key = '_' + key
key_d = {key: 0}
return pd.merge(
df1.assign(**key_d), df2.assign(**key_d), on=key).drop(key, axis=1)
# Two data frames, where the first happens to have a 'key' column
df1 = pd.DataFrame({'number':[1, 2], 'key':[3, 4]})
df2 = pd.DataFrame({'digit': [5, 6]})
cartesian(df1, df2)
shows:
number key digit
0 1 3 5
1 1 3 6
2 2 4 5
3 2 4 6
This may be late, but an extension that works for value and reference types alike based on Eric's answer:
public static partial class Extensions
{
public static Nullable<T> Unanimous<T>(this IEnumerable<Nullable<T>> sequence, Nullable<T> other, IEqualityComparer comparer = null) where T : struct, IComparable
{
object first = null;
foreach(var item in sequence)
{
if (first == null)
first = item;
else if (comparer != null && !comparer.Equals(first, item))
return other;
else if (!first.Equals(item))
return other;
}
return (Nullable<T>)first ?? other;
}
public static T Unanimous<T>(this IEnumerable<T> sequence, T other, IEqualityComparer comparer = null) where T : class, IComparable
{
object first = null;
foreach(var item in sequence)
{
if (first == null)
first = item;
else if (comparer != null && !comparer.Equals(first, item))
return other;
else if (!first.Equals(item))
return other;
}
return (T)first ?? other;
}
}
I believe I had a similar quandary recently
function parentCtrl() {
var pc = this; // pc stands for parent control
pc.foobar = 'SomeVal';
}
function childCtrl($scope) {
// now how do I get the parent control 'foobar' variable?
// I used $scope.$parent
var parentFoobarVariableValue = $scope.$parent.pc.foobar;
// that did it
}
My setup was a little different, but the same thing should probably still work
The function you're after is numpy.linalg.norm
. (I reckon it should be in base numpy as a property of an array -- say x.norm()
-- but oh well).
import numpy as np
x = np.array([1,2,3,4,5])
np.linalg.norm(x)
You can also feed in an optional ord
for the nth order norm you want. Say you wanted the 1-norm:
np.linalg.norm(x,ord=1)
And so on.
I used this:
<?php echo get_post_field('post_content', $post->ID); ?>
and this even more concise:
<?= get_post_field('post_content', $post->ID) ?>
Edit: now there is yet an easier way to do this - when creating your group, just mention the full bot name (eg. @UniversalAgent1Bot) and it will list it as you type. Then you can just tap on it to add it.
Old answer:
It is possible of course, use -l:
instead of -l
. For example -l:libXYZ.a
to link with libXYZ.a
. Notice the lib
written out, as opposed to -lXYZ
which would auto expand to libXYZ
.
You can use the Console.SetCursorPosition
function to go to a specific line number.
Than you can use this function to clear the line
public static void ClearCurrentConsoleLine()
{
int currentLineCursor = Console.CursorTop;
Console.SetCursorPosition(0, Console.CursorTop);
Console.Write(new string(' ', Console.WindowWidth));
Console.SetCursorPosition(0, currentLineCursor);
}
Console.WriteLine("Test");
Console.SetCursorPosition(0, Console.CursorTop - 1);
ClearCurrentConsoleLine();
Theres two properties on the model you need to set. The first $primaryKey
to tell the model what column to expect the primary key on. The second $incrementing
so it knows the primary key isn't a linear auto incrementing value.
class MyModel extends Model
{
protected $primaryKey = 'my_column';
public $incrementing = false;
}
For more info see the Primary Keys
section in the documentation on Eloquent.
Use .val()
instead of .innerHTML
for getting value of selected option
Use .text()
for getting text of selected option
Thanks for correcting :)
Yes, you can do this, but I doubt that it would improve performances, unless your query has a real large latency.
You could do:
UPDATE table SET posX=CASE
WHEN id=id[1] THEN posX[1]
WHEN id=id[2] THEN posX[2]
...
ELSE posX END, posY = CASE ... END
WHERE id IN (id[1], id[2], id[3]...);
The total cost is given more or less by: NUM_QUERIES * ( COST_QUERY_SETUP + COST_QUERY_PERFORMANCE ). This way, you knock down a bit on NUM_QUERIES, but COST_QUERY_PERFORMANCE goes up bigtime. If COST_QUERY_SETUP is really huge (e.g., you're calling some network service which is real slow) then, yes, you might still end up on top.
Otherwise, I'd try with indexing on id, or modifying the architecture.
In MySQL I think you could do this more easily with a multiple INSERT ON DUPLICATE KEY UPDATE (but am not sure, never tried).
V2.0.0 and later
See also see https://angular.io/guide/router#the-default-route-to-heroes
RouterConfig = [
{ path: '', redirectTo: '/heroes', pathMatch: 'full' },
{ path: 'heroes', component: HeroComponent,
children: [
{ path: '', redirectTo: '/detail', pathMatch: 'full' },
{ path: 'detail', component: HeroDetailComponent }
]
}
];
There is also the catch-all route
{ path: '**', redirectTo: '/heroes', pathMatch: 'full' },
which redirects "invalid" urls.
V3-alpha (vladivostok)
Use path /
and redirectTo
RouterConfig = [
{ path: '/', redirectTo: 'heroes', terminal: true },
{ path: 'heroes', component: HeroComponent,
children: [
{ path: '/', redirectTo: 'detail', terminal: true },
{ path: 'detail', component: HeroDetailComponent }
]
}
];
RC.1 @angular/router
The RC router doesn't yet support useAsDefault
. As a workaround you can navigate explicitely.
In the root component
export class AppComponent {
constructor(router:Router) {
router.navigate(['/Merge']);
}
}
for other components
export class OtherComponent {
constructor(private router:Router) {}
routerOnActivate(curr: RouteSegment, prev?: RouteSegment, currTree?: RouteTree, prevTree?: RouteTree) : void {
this.router.navigate(['SomeRoute'], curr);
}
}
The server at x3.chatforyoursite.com
needs to output the following header:
Access-Control-Allow-Origin: http://www.example.com
Where http://www.example.com
is your website address. You should check your settings on chatforyoursite.com
to see if you can enable this - if not their technical support would probably be the best way to resolve this. However to answer your question, you need the remote site to allow your site to access AJAX responses client side.
This Twilio blog page made on March 24, 2017 by Marcos Placona may be helpful.
Google Spreadsheets and .NET Core
It references Google.Api.Sheets.v4 and OAuth2.
System.currentTimeMillis()
does give you the number of milliseconds since January 1, 1970 00:00:00 UTC. The reason you see local times might be because you convert a Date
instance to a string before using it. You can use DateFormat
s to convert Date
s to String
s in any timezone:
DateFormat df = DateFormat.getTimeInstance();
df.setTimeZone(TimeZone.getTimeZone("gmt"));
String gmtTime = df.format(new Date());
Check for padding attribute if the issue still exists after changing theme.
Padding Issue creating a white space on top of fragment window / app window
Once you remove the padding - top value automatically the white space is removed.
You cannot use a variable in a create table statement. The best thing I can suggest is to write the entire query as a string and exec that.
Try something like this:
declare @query varchar(max);
set @query = 'create database TEST...';
exec (@query);
You need an scp client. Putty is not one. You can use WinSCP or PSCP. Both are free software.
It is because of the endlines in each lines. Use the chomp method in ruby to delete the endline '\n' or 'r' at the end.
line_num=0
File.open('xxx.txt').each do |line|
print "#{line_num += 1} #{line.chomp}"
end
SELECT
id,
jsondata,
ROUND (
(
LENGTH(jsondata)
- LENGTH( REPLACE ( jsondata, "sonal", "") )
) / LENGTH("sonal")
)
+
ROUND (
(
LENGTH(jsondata)
- LENGTH( REPLACE ( jsondata, "khunt", "") )
) / LENGTH("khunt")
)
AS count1 FROM test ORDER BY count1 DESC LIMIT 0, 2
Thanks Yannis, your solution worked for me and here I'm sharing same solution for multiple keywords with order and limit.
We use object-scan for most of our data processing. It's conceptually very simple, but allows for a lot of cool stuff. Here is how you would solve your question
// const objectScan = require('object-scan');
const findDinner = (dinner, data) => objectScan(['*'], {
abort: true,
rtn: 'value',
filterFn: ({ value }) => value.dinner === dinner
})(data);
const data = { 1: { name: 'bob', dinner: 'pizza' }, 2: { name: 'john', dinner: 'sushi' }, 3: { name: 'larry', dinner: 'hummus' } };
console.log(findDinner('sushi', data));
// => { name: 'john', dinner: 'sushi' }
_x000D_
.as-console-wrapper {max-height: 100% !important; top: 0}
_x000D_
<script src="https://bundle.run/[email protected]"></script>
_x000D_
Disclaimer: I'm the author of object-scan
I also tried a very simple app on 10.8 (one button, sets text on a label). It crashed at startup, as Greg Parker stated:
Dyld Error Message:
Symbol not found: __dispatch_source_type_memorypressure
Referenced from: /Volumes/*/SwifTest.app/Contents/MacOS/../Frameworks/libswiftDispatch.dylib
Expected in: /usr/lib/libSystem.B.dylib
in /Volumes/*/SwifTest.app/Contents/MacOS/../Frameworks/libswiftDispatch.dylib
(This was using a deployment target of 10.7)
Also make sure you just don't have a pending transaction. :)
I was doing some tests around and began a transaction to be safe but never closed it. I wish the error would have been more explicit but oh well!
I could solve this problem by changing "Maven home directory" from "Bundled (Maven 3) to "/usr/local/Cellar/maven/3.2.5/libexec" in the maven settings of IntelliJ (14.1.2).
Use DATESTR
>> datestr(40189)
ans =
12-Jan-0110
Unfortunately, Excel starts counting at 1-Jan-1900. Find out how to convert serial dates from Matlab to Excel by using DATENUM
>> datenum(2010,1,11)
ans =
734149
>> datenum(2010,1,11)-40189
ans =
693960
>> datestr(40189+693960)
ans =
11-Jan-2010
In other words, to convert any serial Excel date, call
datestr(excelSerialDate + 693960)
EDIT
To get the date in mm/dd/yyyy format, call datestr
with the specified format
excelSerialDate = 40189;
datestr(excelSerialDate + 693960,'mm/dd/yyyy')
ans =
01/11/2010
Also, if you want to get rid of the leading zero for the month, you can use REGEXPREP to fix things
excelSerialDate = 40189;
regexprep(datestr(excelSerialDate + 693960,'mm/dd/yyyy'),'^0','')
ans =
1/11/2010
This should give what you want:
FLOOR(RAND() * 401) + 100
Generically, FLOOR(RAND() * (<max> - <min> + 1)) + <min>
generates a number between <min
> and <max>
inclusive.
Update
This full statement should work:
SELECT name, address, FLOOR(RAND() * 401) + 100 AS `random_number`
FROM users
The answers here work for just 2 cells, but as soon as those columns have more in them it can lead to a bit more complexity. I think I've found a generalized solution for any number of cells in multiple columns.
#Goals Get a vertical sequence of tags on mobile to arrange themselves in whatever order the design calls for on tablet/desktop. In this concrete example, one tag must enter flow earlier than it normally would, and another later than it normally would.
##Mobile
[1 headline]
[2 image]
[3 qty]
[4 caption]
[5 desc]
##Tablet+
[2 image ][1 headline]
[ ][3 qty ]
[ ][5 desc ]
[4 caption][ ]
[ ][ ]
So headline needs to shuffle right on tablet+, and technically, so does desc - it sits above the caption tag that precedes it on mobile. You'll see in a moment 4 caption is in trouble too.
Let's assume every cell could vary in height, and needs to be flush top-to-bottom with its next cell (ruling out weak tricks like a table).
As with all Bootstrap Grid problems step 1 is to realize the HTML has to be in mobile-order, 1 2 3 4 5, on the page. Then, determine how to get tablet/desktop to reorder itself in this way - ideally without Javascript.
The solution to get 1 headline
and 3 qty
to sit to the right not the left is to simply set them both pull-right
. This applies CSS float: right
, meaning they find the first open space they'll fit to the right. You can think of the browser's CSS processor working in the following order: 1 fits in to the right top corner. 2 is next and is regular (float: left
), so it goes to top-left corner. Then 3, which is float: right
so it leaps over underneath 1.
But this solution wasn't enough for 4 caption
; because the right 2 cells are so short 2 image
on the left tends to be longer than the both of them combined. Bootstrap Grid is a glorified float hack, meaning 4 caption
is float: left
. With 2 image
occupying so much room on the left, 4 caption
attempts to fit in the next available space - often the right column, not the left where we wanted it.
The solution here (and more generally for any issue like this) was to add a hack tag, hidden on mobile, that exists on tablet+ to push caption out, that then gets covered up by a negative margin - like this:
[2 image ][1 headline]
[ ][3 qty ]
[ ][4 hack ]
[5 caption][6 desc ^^^]
[ ][ ]
http://jsfiddle.net/b9chris/52VtD/16633/
HTML:
<div id=headline class="col-xs-12 col-sm-6 pull-right">Product Headline</div>
<div id=image class="col-xs-12 col-sm-6">Product Image</div>
<div id=qty class="col-xs-12 col-sm-6 pull-right">Qty, Add to cart</div>
<div id=hack class="hidden-xs col-sm-6">Hack</div>
<div id=caption class="col-xs-12 col-sm-6">Product image caption</div>
<div id=desc class="col-xs-12 col-sm-6 pull-right">Product description</div>
CSS:
#hack { height: 50px; }
@media (min-width: @screen-sm) {
#desc { margin-top: -50px; }
}
So, the generalized solution here is to add hack tags that can disappear on mobile. On tablet+ the hack tags allow displayed tags to appear earlier or later in the flow, then get pulled up or down to cover up those hack tags.
Note: I've used fixed heights for the sake of the simple example in the linked jsfiddle, but the actual site content I was working on varies in height in all 5 tags. It renders properly with relatively large variance in tag heights, especially image and desc.
Note 2: Depending on your layout, you may have a consistent enough column order on tablet+ (or larger resolutions), that you can avoid use of hack tags, using margin-bottom
instead, like so:
Note 3: This uses Bootstrap 3. Bootstrap 4 uses a different grid set, and won't work with these examples.
If you are using vue2-google-maps like me, the code to set the size looks like this:
<gmap-marker
..
:icon="{
..
anchor: { x: iconSize, y: iconSize },
scaledSize: { height: iconSize, width: iconSize },
}"
>
"C:\Users\zero\AppData\Local\Google\Chrome\Application\chrome.exe"
.Paste the value into Location of the item, and append --kiosk <your url>
:
"C:\Users\zero\AppData\Local\Google\Chrome\Application\chrome.exe" --kiosk http://www.google.com
Press Apply, then OK.
I had similar issue, I resolved by changing the requestlimits maxAllowedContentLength ="40000000" section of applicationhost.config file, located in "C:\Windows\System32\inetsrv\config" directory
Look for security Section and add the sectionGroup.
<sectionGroup name="requestfiltering">
<section name="requestlimits" maxAllowedContentLength ="40000000" />
</sectionGroup>
*NOTE delete;
<section name="requestfiltering" overrideModeDefault="Deny" />
You should be using the unwind library.
unw_cursor_t cursor; unw_context_t uc;
unw_word_t ip, sp;
unw_getcontext(&uc);
unw_init_local(&cursor, &uc);
unsigned long a[100];
int ctr = 0;
while (unw_step(&cursor) > 0) {
unw_get_reg(&cursor, UNW_REG_IP, &ip);
unw_get_reg(&cursor, UNW_REG_SP, &sp);
if (ctr >= 10) break;
a[ctr++] = ip;
}
Your approach also would work fine unless you make a call from a shared library.
You can use the addr2line
command on Linux to get the source function / line number of the corresponding PC.
In Python:
# as Peter van der Wal's answer
re.split(r'\r\n|\r|\n', text, flags=re.M)
or more rigorous:
# https://docs.python.org/3/library/stdtypes.html#str.splitlines
str.splitlines()
Another option I like, which can be generalized once I start seeing the code not conform to DRY, is to use one controller that redirects to another controller.
public ActionResult ClientIdSearch(int cid)
{
var action = String.Format("Details/{0}", cid);
return RedirectToAction(action, "Accounts");
}
I find this allows me to apply my logic in one location and re-use it without have to sprinkle JavaScript in the views to handle this. And, as I mentioned I can then refactor for re-use as I see this getting abused.
my two cents worth ~
Cloud refers to an (imaginary/easily scalable) unlimited space and processing power. The term shields the underlying technologies and highlights solely its unlimited storage-space and power.
Grid is a group of physically close-by machines setup. Term usually imply the processing power (ie:MFLOPS/GFLOPS), referred by engineers
Cluster is a set of logically connected machines/device (like a clusters of harddisk, cluster of database). Term highlights how devices are able to connect together and operate as a unit, referred by engineers
On Android 6 with ADB version 1.0.32, you have to put / behind the folder you want to copy. E.g adb pull "/sdcard/".
How about:
<asp:HtmlIframe ID="yourIframe" runat="server" />
Is supported since .Net Framework 4.5
If you have Problems using this control, you might take a look here.
Replace <?php the_content();?>
by the code below
<?php
$char_limit = 100; //character limit
$content = $post->post_content; //contents saved in a variable
echo substr(strip_tags($content), 0, $char_limit);
?>
For those using ReactJS.Net and getting this error after a publish:
Check the properties of your .jsx files and make sure Build Action
is set to Content
. Those set to None
will not be published. I came upon this solution from this SO answer.
From PowerShell Core 6.0 you are able to write &
at end of command and it will be equivalent to running you pipeline in background in current working directory.
It's not equivalent to &
in bash, it's just a nicer syntax for current PowerShell jobs feature. It returns a job object so you can use all other command that you would use for jobs. For example Receive-Job
:
C:\utils> ping google.com &
Id Name PSJobTypeName State HasMoreData Location Command
-- ---- ------------- ----- ----------- -------- -------
35 Job35 BackgroundJob Running True localhost Microsoft.PowerShell.M...
C:\utils> Receive-Job 35
Pinging google.com [172.217.16.14] with 32 bytes of data:
Reply from 172.217.16.14: bytes=32 time=11ms TTL=55
Reply from 172.217.16.14: bytes=32 time=11ms TTL=55
Reply from 172.217.16.14: bytes=32 time=10ms TTL=55
Reply from 172.217.16.14: bytes=32 time=10ms TTL=55
Ping statistics for 172.217.16.14:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 10ms, Maximum = 11ms, Average = 10ms
C:\utils>
If you want to execute couple of statements in background you can combine &
call operator, { }
script block and this new &
background operator like here:
& { cd .\SomeDir\; .\SomeLongRunningOperation.bat; cd ..; } &
Here's some more info from documentation pages:
from What's New in PowerShell Core 6.0:
Support backgrounding of pipelines with ampersand (&) (#3360)
Putting
&
at the end of a pipeline causes the pipeline to be run as a PowerShell job. When a pipeline is backgrounded, a job object is returned. Once the pipeline is running as a job, all of the standard*-Job
cmdlets can be used to manage the job. Variables (ignoring process-specific variables) used in the pipeline are automatically copied to the job soCopy-Item $foo $bar &
just works. The job is also run in the current directory instead of the user's home directory. For more information about PowerShell jobs, see about_Jobs.
from about_operators / Ampersand background operator &:
Ampersand background operator &
Runs the pipeline before it in a PowerShell job. The ampersand background operator acts similarly to the UNIX "ampersand operator" which famously runs the command before it as a background process. The ampersand background operator is built on top of PowerShell jobs so it shares a lot of functionality with
Start-Job
. The following command contains basic usage of the ampersand background operator.Get-Process -Name pwsh &
This is functionally equivalent to the following usage of
Start-Job
.
Start-Job -ScriptBlock {Get-Process -Name pwsh}
Since it's functionally equivalent to using
Start-Job
, the ampersand background operator returns aJob
object just likeStart-Job does
. This means that you are able to useReceive-Job
andRemove-Job
just as you would if you had usedStart-Job
to start the job.$job = Get-Process -Name pwsh & Receive-Job $job
Output
NPM(K) PM(M) WS(M) CPU(s) Id SI ProcessName ------ ----- ----- ------ -- -- ----------- 0 0.00 221.16 25.90 6988 988 pwsh 0 0.00 140.12 29.87 14845 845 pwsh 0 0.00 85.51 0.91 19639 988 pwsh $job = Get-Process -Name pwsh & Remove-Job $job
For more information on PowerShell jobs, see about_Jobs.
jCarousel is a Jquery Plugin , it have same functionality already implemented , which might want to archive. it's nice and easy. here is the link
and complete documentation can be found here
It is .shape
:
ndarray.shape
Tuple of array dimensions.
Thus:
>>> a.shape
(2, 2)
You can try changing it to this:
If myTableData.Rows.Count > 0 Then
For i As Integer = 0 To myTableData.Rows.Count - 1
''Dim DataType() As String = myTableData.Rows(i).Item(1)
ListBox2.Items.Add(myTableData.Rows(i)(1))
Next
End If
Note: Your loop needs to be one less than the row count since it's a zero-based index.
If you do not specifically need the alt text of an image, then you can just target the class/id of the image.
$('img.propImg').each(function(){
enter code here
}
I know it’s not quite answering the question, though I’d spent ages trying to figure this out and this question gave me the solution :). In my case I needed to hide any image tags with a specific src.
$('img.propImg').each(function(){ //for each loop that gets all the images.
if($(this).attr('src') == "img/{{images}}") { // if the src matches this
$(this).css("display", "none") // hide the image.
}
});
You need seek
to the beginning of the file before writing and then use file.truncate()
if you want to do inplace replace:
import re
myfile = "path/test.xml"
with open(myfile, "r+") as f:
data = f.read()
f.seek(0)
f.write(re.sub(r"<string>ABC</string>(\s+)<string>(.*)</string>", r"<xyz>ABC</xyz>\1<xyz>\2</xyz>", data))
f.truncate()
The other way is to read the file then open it again with open(myfile, 'w')
:
with open(myfile, "r") as f:
data = f.read()
with open(myfile, "w") as f:
f.write(re.sub(r"<string>ABC</string>(\s+)<string>(.*)</string>", r"<xyz>ABC</xyz>\1<xyz>\2</xyz>", data))
Neither truncate
nor open(..., 'w')
will change the inode number of the file (I tested twice, once with Ubuntu 12.04 NFS and once with ext4).
By the way, this is not really related to Python. The interpreter calls the corresponding low level API. The method truncate()
works the same in the C programming language: See http://man7.org/linux/man-pages/man2/truncate.2.html
Flexible Box Layout Module - 8.1. Aligning with auto margins
Auto margins on flex items have an effect very similar to auto margins in block flow:
During calculations of flex bases and flexible lengths, auto margins are treated as 0.
Prior to alignment via
justify-content
andalign-self
, any positive free space is distributed to auto margins in that dimension.
Therefore you could use margin-top: auto
to distribute the space between the other elements and the last element.
This will position the last element at the bottom.
p:last-of-type {
margin-top: auto;
}
.container {
display: flex;
flex-direction: column;
border: 1px solid #000;
min-height: 200px;
width: 100px;
}
p {
height: 30px;
background-color: blue;
margin: 5px;
}
p:last-of-type {
margin-top: auto;
}
_x000D_
<div class="container">
<p></p>
<p></p>
<p></p>
</div>
_x000D_
Likewise, you can also use margin-left: auto
or margin-right: auto
for the same alignment horizontally.
p:last-of-type {
margin-left: auto;
}
.container {
display: flex;
width: 100%;
border: 1px solid #000;
}
p {
height: 50px;
width: 50px;
background-color: blue;
margin: 5px;
}
p:last-of-type {
margin-left: auto;
}
_x000D_
<div class="container">
<p></p>
<p></p>
<p></p>
<p></p>
</div>
_x000D_
node & element are same. Every element is a node , but it's not that every node must be an element.
SSL development libraries have to be installed
CentOS:
$ yum install openssl-devel libffi-devel
Ubuntu:
$ apt-get install libssl-dev libffi-dev
OS X (with Homebrew installed):
$ brew install openssl
Angularjs ui bootstrap you can use angularjs ui bootstrap, it provides date validation also
<input type="text" class="form-control"
datepicker-popup="{{format}}" ng-model="dt" is-open="opened"
min-date="minDate" max-date="'2015-06-22'" datepickeroptions="dateOptions"
date-disabled="disabled(date, mode)" ng-required="true">
in controller can specify whatever format you want to display the date as datefilter
$scope.formats = ['dd-MMMM-yyyy', 'yyyy/MM/dd', 'dd.MM.yyyy', 'shortDate'];
This is link by Tomas has a well written script to zip contents of a folder.
To make it work just copy the script into a batch file and execute it by specifying the folder to be zipped(source).
No need to mention destination directory as it is defaulted in the script to Desktop ("%USERPROFILE%\Desktop")
Copying the script here, just incase the web-link is down:
@ECHO OFF
SETLOCAL ENABLEDELAYEDEXPANSION
SET sourceDirPath=%1
IF [%2] EQU [] (
SET destinationDirPath="%USERPROFILE%\Desktop"
) ELSE (
SET destinationDirPath="%2"
)
IF [%3] EQU [] (
SET destinationFileName="%~n1%.zip"
) ELSE (
SET destinationFileName="%3"
)
SET tempFilePath=%TEMP%\FilesToZip.txt
TYPE NUL > %tempFilePath%
FOR /F "DELIMS=*" %%i IN ('DIR /B /S /A-D "%sourceDirPath%"') DO (
SET filePath=%%i
SET dirPath=%%~dpi
SET dirPath=!dirPath:~0,-1!
SET dirPath=!dirPath:%sourceDirPath%=!
SET dirPath=!dirPath:%sourceDirPath%=!
ECHO .SET DestinationDir=!dirPath! >> %tempFilePath%
ECHO "!filePath!" >> %tempFilePath%
)
MAKECAB /D MaxDiskSize=0 /D CompressionType=MSZIP /D Cabinet=ON /D Compress=ON /D UniqueFiles=OFF /D DiskDirectoryTemplate=%destinationDirPath% /D CabinetNameTemplate=%destinationFileName% /F %tempFilePath% > NUL 2>&1
DEL setup.inf > NUL 2>&1
DEL setup.rpt > NUL 2>&1
DEL %tempFilePath% > NUL 2>&1
I launched ubuntu Xampp server on AWS amazon. And met the same problem with FTP, even though add user to group ftp SFTP and set permissions, owner group of htdocs folder. Finally find the reason in inbound rules in security group, added All TCP, 0 - 65535 rule(0.0.0.0/0,::/0) , then working right!
Usually this happens if something is wrong with the byte array.
File.WriteAllBytes("filename.PDF", Byte[]);
This creates a new file, writes the specified byte array to the file, and then closes the file. If the target file already exists, it is overwritten.
Asynchronous implementation of this is also available.
public static System.Threading.Tasks.Task WriteAllBytesAsync
(string path, byte[] bytes, System.Threading.CancellationToken cancellationToken = null);
df.insert(loc, column_name, value)
This will work if there is no other column with the same name. If a column, with your provided name already exists in the dataframe, it will raise a ValueError.
You can pass an optional parameter allow_duplicates
with True
value to create a new column with already existing column name.
Here is an example:
>>> df = pd.DataFrame({'b': [1, 2], 'c': [3,4]})
>>> df
b c
0 1 3
1 2 4
>>> df.insert(0, 'a', -1)
>>> df
a b c
0 -1 1 3
1 -1 2 4
>>> df.insert(0, 'a', -2)
Traceback (most recent call last):
File "", line 1, in
File "C:\Python39\lib\site-packages\pandas\core\frame.py", line 3760, in insert
self._mgr.insert(loc, column, value, allow_duplicates=allow_duplicates)
File "C:\Python39\lib\site-packages\pandas\core\internals\managers.py", line 1191, in insert
raise ValueError(f"cannot insert {item}, already exists")
ValueError: cannot insert a, already exists
>>> df.insert(0, 'a', -2, allow_duplicates = True)
>>> df
a a b c
0 -2 -1 1 3
1 -2 -1 2 4
In version r82 of Three.js TextureLoader is the object to use for loading a texture.
Extract (test.js):
var scene = new THREE.Scene();
var ratio = window.innerWidth / window.innerHeight;
var camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight,
0.1, 50);
var renderer = ...
[...]
/**
* Will be called when load completes.
* The argument will be the loaded texture.
*/
var onLoad = function (texture) {
var objGeometry = new THREE.BoxGeometry(20, 20, 20);
var objMaterial = new THREE.MeshPhongMaterial({
map: texture,
shading: THREE.FlatShading
});
var mesh = new THREE.Mesh(objGeometry, objMaterial);
scene.add(mesh);
var render = function () {
requestAnimationFrame(render);
mesh.rotation.x += 0.010;
mesh.rotation.y += 0.010;
renderer.render(scene, camera);
};
render();
}
// Function called when download progresses
var onProgress = function (xhr) {
console.log((xhr.loaded / xhr.total * 100) + '% loaded');
};
// Function called when download errors
var onError = function (xhr) {
console.log('An error happened');
};
var loader = new THREE.TextureLoader();
loader.load('texture.jpg', onLoad, onProgress, onError);
In this example the textures are loaded inside the constructor of the mesh, multiple texture are loaded using Promises.
Extract (Globe.js):
Create a new container using Object3D
for having two meshes in the same container:
var Globe = function (radius, segments) {
THREE.Object3D.call(this);
this.name = "Globe";
var that = this;
// instantiate a loader
var loader = new THREE.TextureLoader();
A map called textures
where every object contains the url
of a texture file and val
for storing the value of a Three.js texture object.
// earth textures
var textures = {
'map': {
url: 'relief.jpg',
val: undefined
},
'bumpMap': {
url: 'elev_bump_4k.jpg',
val: undefined
},
'specularMap': {
url: 'wateretopo.png',
val: undefined
}
};
The array of promises, for each object in the map called textures
push a new Promise in the array texturePromises
, every Promise will call loader.load
. If the value of entry.val
is a valid THREE.Texture
object, then resolve the promise.
var texturePromises = [], path = './';
for (var key in textures) {
texturePromises.push(new Promise((resolve, reject) => {
var entry = textures[key]
var url = path + entry.url
loader.load(url,
texture => {
entry.val = texture;
if (entry.val instanceof THREE.Texture) resolve(entry);
},
xhr => {
console.log(url + ' ' + (xhr.loaded / xhr.total * 100) +
'% loaded');
},
xhr => {
reject(new Error(xhr +
'An error occurred loading while loading: ' +
entry.url));
}
);
}));
}
Promise.all
takes the promise array texturePromises
as argument. Doing so makes the browser wait for all the promises to resolve, when they do we can load the geometry and the material.
// load the geometry and the textures
Promise.all(texturePromises).then(loadedTextures => {
var geometry = new THREE.SphereGeometry(radius, segments, segments);
var material = new THREE.MeshPhongMaterial({
map: textures.map.val,
bumpMap: textures.bumpMap.val,
bumpScale: 0.005,
specularMap: textures.specularMap.val,
specular: new THREE.Color('grey')
});
var earth = that.earth = new THREE.Mesh(geometry, material);
that.add(earth);
});
For the cloud sphere only one texture is necessary:
// clouds
loader.load('n_amer_clouds.png', map => {
var geometry = new THREE.SphereGeometry(radius + .05, segments, segments);
var material = new THREE.MeshPhongMaterial({
map: map,
transparent: true
});
var clouds = that.clouds = new THREE.Mesh(geometry, material);
that.add(clouds);
});
}
Globe.prototype = Object.create(THREE.Object3D.prototype);
Globe.prototype.constructor = Globe;
So, I checked Windows Features to make sure I didn't have this thing called WebDAV installed, and it said I didn't. Anyways, I went ahead and placed the following in my web.config (both front end and WebAPI, just to be sure), and it works now. I placed this inside <system.webServer>
.
<modules runAllManagedModulesForAllRequests="true">
<remove name="WebDAVModule"/> <!-- add this -->
</modules>
Additionally, it is often required to add the following to web.config
in the handlers. Thanks to Babak
<handlers>
<remove name="WebDAV" />
...
</handlers>
try @import FrameworkName
instead of #import "FrameworkName.h"
In sql server, you can do
SELECT *
FROM table t
WHERE t.date > DATEADD(dd,90,now())
GNU cp
has an option to create symlinks instead of copying.
cp -rs /mnt/usr/lib /usr/
Note this is a GNU extension not found in POSIX cp
.
My objective was to create a new Django project from the command line in Ubuntu, like so:
django-admin.py startproject mysite
I have python2.7.5 installed. I got this error:
ImportError: No module named zlib
For hours I could not find a solution, until now!
Here is a link to the solution -
http://doc.biblissima-condorcet.fr/loris-setup-guide-ubuntu-debian
I followed and executed instruction in Section 1.1 and it is working perfectly! It is an easy solution.
function GetPixel(context, x, y)
{
var p = context.getImageData(x, y, 1, 1).data;
var hex = "#" + ("000000" + rgbToHex(p[0], p[1], p[2])).slice(-6);
return hex;
}
function rgbToHex(r, g, b) {
if (r > 255 || g > 255 || b > 255)
throw "Invalid color component";
return ((r << 16) | (g << 8) | b).toString(16);
}
Quoting from wikipedia:
A pointer references a location in memory, and obtaining the value at the location a pointer refers to is known as dereferencing the pointer.
Dereferencing is done by applying the unary *
operator on the pointer.
int x = 5;
int * p; // pointer declaration
p = &x; // pointer assignment
*p = 7; // pointer dereferencing, example 1
int y = *p; // pointer dereferencing, example 2
"Dereferencing a NULL pointer" means performing *p
when the p
is NULL
I agree and found this file under xammp-control the type of file is configuration. When I changed it to 8080 it worked automagically!
Maybe you don't want to know about month fractions; What about this code?
public static class DateTimeExtensions
{
public static int TotalMonths(this DateTime start, DateTime end)
{
return (start.Year * 12 + start.Month) - (end.Year * 12 + end.Month);
}
}
// Console.WriteLine(
// DateTime.Now.TotalMonths(
// DateTime.Now.AddMonths(-1))); // prints "1"
eFox's answer worked for a single project, but not when I was referencing a module from another one (the pom.xml were still stored in my .m2
with the property instead of the version).
However, it works if you combine it with the flatten-maven-plugin
, since it generates the poms with the correct version, not the property.
The only option I changed in the plug-in definition is the outputDirectory
, it's empty by default, but I prefer to have it in target
, which is set in my .gitignore
configuration:
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>flatten-maven-plugin</artifactId>
<version>1.0.1</version>
<configuration>
<updatePomFile>true</updatePomFile>
<outputDirectory>target</outputDirectory>
</configuration>
<executions>
<execution>
<id>flatten</id>
<phase>process-resources</phase>
<goals>
<goal>flatten</goal>
</goals>
</execution>
</executions>
</plugin>
The plug-in configuration goes in the parent pom.xml
Step 1
public class TopAttractions extends Fragment implements OnMapReadyCallback,
GoogleMap.OnMarkerClickListener
Step 2
gMap.setOnMarkerClickListener(this);
Step 3
@Override
public boolean onMarkerClick(Marker marker) {
if(marker.getTitle().equals("sharm el-shek"))
Toast.makeText(getActivity().getApplicationContext(), "Hamdy", Toast.LENGTH_SHORT).show();
return false;
}
I am using VS 2008 and I got this error. I tried everything else suggested here and on some other web sites but nothing worked.
The solution was quite simple and there were two other solutions mentioned on this page that put me in the right area.
Go to Project menu and click on Properties (you can also right click on the Project name in the Solution Explorer and select Properties).
Select Compile tab on the left.
In the "Build output path:" textbox make sure it that you have "bin\" in the textbox.
In my situation it was pointing to another bin folder on the network and that is what caused the breakpoints to fail. You want it looking at your project's current Bin folder.
This specifies the default collation for the database. Every text field that you create in tables in the database will use that collation, unless you specify a different one.
A database always has a default collation. If you don't specify any, the default collation of the SQL Server instance is used.
The name of the collation that you use shows that it uses the Latin1 code page 1, is case insensitive (CI) and accent sensitive (AS). This collation is used in the USA, so it will contain sorting rules that are used in the USA.
The collation decides how text values are compared for equality and likeness, and how they are compared when sorting. The code page is used when storing non-unicode data, e.g. varchar fields.
b = a[a>threshold]
this should do
I tested as follows:
import numpy as np, datetime
# array of zeros and ones interleaved
lrg = np.arange(2).reshape((2,-1)).repeat(1000000,-1).flatten()
t0 = datetime.datetime.now()
flt = lrg[lrg==0]
print datetime.datetime.now() - t0
t0 = datetime.datetime.now()
flt = np.array(filter(lambda x:x==0, lrg))
print datetime.datetime.now() - t0
I got
$ python test.py
0:00:00.028000
0:00:02.461000
http://docs.scipy.org/doc/numpy/user/basics.indexing.html#boolean-or-mask-index-arrays
You simply forgot to supply an argument to -i
. Just change -i
to -i ''
.
Of course that means you don't want your files to be backed up; otherwise supply your extension of choice, like -i .bak
.
Use 'dd-mon-yyyy'
if you are using the 2nd date format specified in your answer. Ex:
to_date(<column name>,'dd-mon-yyyy')
html {
min-height: 100%;
}
body {
min-height: 100vh;
}
The html height (%)
will take care of the height of the documents that's height
is more than a 100%
of the screen view
while the body view height (vh)
will take care of the document's height that is less than the height of the screen view.
For local time in ISO8601
for SQL TIMESTAMP
you could try:
var tzoffset = (new Date()).getTimezoneOffset() * 60000;
var localISOTime = (new Date(Date.now() - tzoffset))
.toISOString()
.slice(0, 19)
.replace('T', ' ');
$('#mydatediv').val(localISOTime);
I was wondering how to do this myself; it seems Gmail has since silently implemented this feature. I created the following filter:
Matches: subject:([test])
Do this: Skip Inbox
And then I sent a message with the subject
[test] foo
And the message was archived! So it seems all that is necessary is to create a filter for the subject prefix you wish to handle.
Basic validation can be performed by choosing the type attribute of input elements. For example:
<input type="email" />
<input type="URL" />
<input type="number" />
using pattern attribute like:
<input type="text" pattern="[1-4]{5}" />
required attribute
<input type="text" required />
maxlength:
<input type="text" maxlength="20" />
min & max:
<input type="number" min="1" max="4" />
String.format()
to the rescue!!
A better method is using strrpos + substr (faster than explode for that) :
$userfile_name = $_FILES['image']['name'];
$userfile_extn = substr($userfile_name, strrpos($userfile_name, '.')+1);
But, to check the type of a file, using mime_content_type is a better way : http://www.php.net/manual/en/function.mime-content-type.php
You can also try this.
$(document).ready(function () {
var url = "@(Html.Raw(Url.Action("ActionName", "ControllerName")))";
$("#PartialViewDivId").load(url);
setInterval(function () {
var url = "@(Html.Raw(Url.Action("ActionName", "ControllerName")))";
$("#PartialViewDivId").load(url);
}, 30000); //Refreshes every 30 seconds
$.ajaxSetup({ cache: false }); //Turn off caching
});
It makes an initial call to load the div, and then subsequent calls are on a 30 second interval.
In the controller section you can update the object and pass the object to the partial view.
public class ControllerName: Controller
{
public ActionResult ActionName()
{
.
. // code for update object
.
return PartialView("PartialViewName", updatedObject);
}
}
I'm on Bootstrap 4, using fullPage.js with a fixed top nav, and tried everything listed here, with mixed results.
Tried the best, clean way :
data-toggle="collapse" data-target=".navbar-collapse.show"
The menu would collapse, but the href links wouldn't lead anywhere.
Tried the logical other ways :
$('myClickableElements').on('click touchstart', function(){
$(".navbar-collapse.show").collapse('hide');
// or
$(".navbar-collapse.show").collapse('toggle');
// or
$('.navbar-toggler').click()
});
There would be some weird behavior because of the touchstart event : the clicked buttons would end up not be the ones I actually clicked, hence breaking the links. Plus it would add the .show class to some other unrelated dropdowns in my nav, causing some more weird stuff.
Nothing would work.
So, instead, I had the (so far) marvelous idea of doing that :
$(window).on('hashchange',function(){
$(".navbar-collapse.show").collapse('hide');
});
I already had stuff in that hashchange function, si I just had to add this line.
It actually does exactly what I want : collapsing the menu when the hash changes (i.e. a click leading somewhere else has occurred). Which is good, cause I can now have links in my menu that won't collapse it.
Who knows, maybe this will help someone in my situation!
And thanks to everyone who has participated in that thread, lots of info to be learned here.
The answer provided by Joe Stefanelli is already correct.
SELECT name FROM (SELECT name FROM agentinformation) as a
We need to make an alias of the subquery because a query needs a table object which we will get from making an alias for the subquery. Conceptually, the subquery results are substituted into the outer query. As we need a table object in the outer query, we need to make an alias of the inner query.
Statements that include a subquery usually take one of these forms:
Check for more subquery rules and subquery types.
More examples of Nested Subqueries.
IN / NOT IN – This operator takes the output of the inner query after the inner query gets executed which can be zero or more values and sends it to the outer query. The outer query then fetches all the matching [IN operator] or non matching [NOT IN operator] rows.
ANY – [>ANY or ANY operator takes the list of values produced by the inner query and fetches all the values which are greater than the minimum value of the list. The
e.g. >ANY(100,200,300), the ANY operator will fetch all the values greater than 100.
e.g. >ALL(100,200,300), the ALL operator will fetch all the values greater than 300.
Question is old, but it's never too late to answer
$(document).ready(function() {
//prevent paste
var usern_paste = document.getElementById('yourid');
usern_paste.onpaste = e => e.preventDefault();
//prevent copy
var usern_drop = document.getElementById('yourid');
usern_drop.ondrop = e => e.preventDefault();
});
$('#yourid').keypress(function (e) {
var regex = new RegExp("^[a-zA-Z0-9\s]");
var str = String.fromCharCode(!e.charCode ? e.which : e.charCode);
if (regex.test(str)) {
return true;
}
e.preventDefault();
return false;
});
For CentOS 7.8 & PHP 7.3
yum install rh-php73-php-mysqlnd
And then restart apache/php.
KeyEvent.KEYCODE_HOME
can NOT be intercepted.
It would be quite bad if it would be possible.
(Edit): I just see Nicks answer, which is perfectly complete ;)
Here is the what I have done to avoid CrossThreadException
and writing to the textbox from another thread.
Here is my Button.Click
function- I want to generate a random number of threads and then get their IDs
by calling the getID()
method and the TextBox value while being in that worker thread.
private void btnAppend_Click(object sender, EventArgs e)
{
Random n = new Random();
for (int i = 0; i < n.Next(1,5); i++)
{
label2.Text = "UI Id" + ((Thread.CurrentThread.ManagedThreadId).ToString());
Thread t = new Thread(getId);
t.Start();
}
}
Here is getId
(workerThread) code:
public void getId()
{
int id = Thread.CurrentThread.ManagedThreadId;
//Note that, I have collected threadId just before calling this.Invoke
//method else it would be same as of UI thread inside the below code block
this.Invoke((MethodInvoker)delegate ()
{
inpTxt.Text += "My id is" +"--"+id+Environment.NewLine;
});
}
Use the built-in Array.toString
method
var arr = ['one', 'two', 'three'];
arr.toString(); // 'one,two,three'
Stack frame is the packed information related to a function call. This information generally includes arguments passed to th function, local variables and where to return upon terminating. Activation record is another name for a stack frame. The layout of the stack frame is determined in the ABI by the manufacturer and every compiler supporting the ISA must conform to this standard, however layout scheme can be compiler dependent. Generally stack frame size is not limited but there is a concept called "red/protected zone" to allow system calls...etc to execute without interfering with a stack frame.
There is always a SP but on some ABIs (ARM's and PowerPC's for example) FP is optional. Arguments that needed to be placed onto the stack can be offsetted using the SP only. Whether a stack frame is generated for a function call or not depends on the type and number of arguments, local variables and how local variables are accessed generally. On most ISAs, first, registers are used and if there are more arguments than registers dedicated to pass arguments these are placed onto the stack (For example x86 ABI has 6 registers to pass integer arguments). Hence, sometimes, some functions do not need a stack frame to be placed on the stack, just the return address is pushed onto the stack.
Following is the code if you are not using jQuery. Demo
var myArray = [
{field: 'id', operator: 'eq', value: 'id'},
{field: 'cStatus', operator: 'eq', value: 'cStatus'},
{field: 'money', operator: 'eq', value: 'money'}
];
alert(myArray.length);
for(var i=0 ; i<myArray.length; i++)
{
if(myArray[i].value=='money')
myArray.splice(i);
}
alert(myArray.length);
You can also use underscore library which have lots of function.
Underscore is a utility-belt library for JavaScript that provides a lot of the functional programming support
If you don't mind using an external package you could use iteration_utilities.grouper
from iteration_utilties
1. It supports all iterables (not just sequences):
from iteration_utilities import grouper
seq = list(range(20))
for group in grouper(seq, 4):
print(group)
which prints:
(0, 1, 2, 3)
(4, 5, 6, 7)
(8, 9, 10, 11)
(12, 13, 14, 15)
(16, 17, 18, 19)
In case the length isn't a multiple of the groupsize it also supports filling (the incomplete last group) or truncating (discarding the incomplete last group) the last one:
from iteration_utilities import grouper
seq = list(range(17))
for group in grouper(seq, 4):
print(group)
# (0, 1, 2, 3)
# (4, 5, 6, 7)
# (8, 9, 10, 11)
# (12, 13, 14, 15)
# (16,)
for group in grouper(seq, 4, fillvalue=None):
print(group)
# (0, 1, 2, 3)
# (4, 5, 6, 7)
# (8, 9, 10, 11)
# (12, 13, 14, 15)
# (16, None, None, None)
for group in grouper(seq, 4, truncate=True):
print(group)
# (0, 1, 2, 3)
# (4, 5, 6, 7)
# (8, 9, 10, 11)
# (12, 13, 14, 15)
I also decided to compare the run-time of a few of the mentioned approaches. It's a log-log plot grouping into groups of "10" elements based on a list of varying size. For qualitative results: Lower means faster:
At least in this benchmark the iteration_utilities.grouper
performs best. Followed by the approach of Craz.
The benchmark was created with simple_benchmark
1. The code used to run this benchmark was:
import iteration_utilities
import itertools
from itertools import zip_longest
def consume_all(it):
return iteration_utilities.consume(it, None)
import simple_benchmark
b = simple_benchmark.BenchmarkBuilder()
@b.add_function()
def grouper(l, n):
return consume_all(iteration_utilities.grouper(l, n))
def Craz_inner(iterable, n, fillvalue=None):
args = [iter(iterable)] * n
return zip_longest(*args, fillvalue=fillvalue)
@b.add_function()
def Craz(iterable, n, fillvalue=None):
return consume_all(Craz_inner(iterable, n, fillvalue))
def nosklo_inner(seq, size):
return (seq[pos:pos + size] for pos in range(0, len(seq), size))
@b.add_function()
def nosklo(seq, size):
return consume_all(nosklo_inner(seq, size))
def SLott_inner(ints, chunk_size):
for i in range(0, len(ints), chunk_size):
yield ints[i:i+chunk_size]
@b.add_function()
def SLott(ints, chunk_size):
return consume_all(SLott_inner(ints, chunk_size))
def MarkusJarderot1_inner(iterable,size):
it = iter(iterable)
chunk = tuple(itertools.islice(it,size))
while chunk:
yield chunk
chunk = tuple(itertools.islice(it,size))
@b.add_function()
def MarkusJarderot1(iterable,size):
return consume_all(MarkusJarderot1_inner(iterable,size))
def MarkusJarderot2_inner(iterable,size,filler=None):
it = itertools.chain(iterable,itertools.repeat(filler,size-1))
chunk = tuple(itertools.islice(it,size))
while len(chunk) == size:
yield chunk
chunk = tuple(itertools.islice(it,size))
@b.add_function()
def MarkusJarderot2(iterable,size):
return consume_all(MarkusJarderot2_inner(iterable,size))
@b.add_arguments()
def argument_provider():
for exp in range(2, 20):
size = 2**exp
yield size, simple_benchmark.MultiArgument([[0] * size, 10])
r = b.run()
1 Disclaimer: I'm the author of the libraries iteration_utilities
and simple_benchmark
.
You could use Trigger.io's UI module to use the native Android date / time picker with a regular HTML5 input. Doing that does require using the overall framework though (so won't work as a regular mobile web page).
You can see before and after screenshots in this blog post: date time picker
I'm a little late to the party but for future readers.
From what i can tell, you're just wanting to toggle the visibility state right? Why not just use the !
operator?
jxPanel6.setVisible(!jxPanel6.isVisible);
It's not an if statement but I prefer this method for code related to your example.
<context:property-placeholder ... />
is the XML equivalent to the PropertyPlaceholderConfigurer. So, prefer that. The <util:properties/>
simply factories a java.util.Properties instance that you can inject.
In Spring 3.1 (not 3.0...) you can do something like this:
@Configuration
@PropertySource("/foo/bar/services.properties")
public class ServiceConfiguration {
@Autowired Environment environment;
@Bean public javax.sql.DataSource dataSource( ){
String user = this.environment.getProperty("ds.user");
...
}
}
In Spring 3.0, you can "access" properties defined using the PropertyPlaceHolderConfigurer mechanism using the SpEl annotations:
@Value("${ds.user}") private String user;
If you want to remove the XML all together, simply register the PropertyPlaceholderConfigurer manually using Java configuration. I prefer the 3.1 approach. But, if youre using the Spring 3.0 approach (since 3.1's not GA yet...), you can now define the above XML like this:
@Configuration
public class MySpring3Configuration {
@Bean
public static PropertyPlaceholderConfigurer configurer() {
PropertyPlaceholderConfigurer ppc = ...
ppc.setLocations(...);
return ppc;
}
@Bean
public class DataSource dataSource(
@Value("${ds.user}") String user,
@Value("${ds.pw}") String pw,
...) {
DataSource ds = ...
ds.setUser(user);
ds.setPassword(pw);
...
return ds;
}
}
Note that the PPC is defined using a static
bean definition method. This is required to make sure the bean is registered early, because the PPC is a BeanFactoryPostProcessor
- it can influence the registration of the beans themselves in the context, so it necessarily has to be registered before everything else.
I think you should have a look at the Pathogen plugin. After you have this installed, you can keep all of your plugins in separate folders in ~/.vim/bundle/, and Pathogen will take care of loading them.
Or, alternatively, perhaps you would prefer Vundle, which provides similar functionality (with the added bonus of automatic updates from plugins in github).
Try this:
select sum(num_tax_amount+num_total_amount) from table_name;
Your code looks correct. My suggestion is that the database already thinks it's upgraded. If you executed the project after incrementing the version number, but before adding the execSQL
call, the database on your test device/emulator may already believe it's at version 2.
A quick way to verify this would be to change the version number to 3 -- if it upgrades after that, you know it was just because your device believed it was already upgraded.
You need jackson dependency for this serialization and deserialization.
Add this dependency:
Gradle:
compile("com.fasterxml.jackson.datatype:jackson-datatype-jsr310:2.9.4")
Maven:
<dependency>
<groupId>com.fasterxml.jackson.datatype</groupId>
<artifactId>jackson-datatype-jsr310</artifactId>
</dependency>
After that, You need to tell Jackson ObjectMapper to use JavaTimeModule. To do that, Autowire ObjectMapper in the main class and register JavaTimeModule to it.
import javax.annotation.PostConstruct;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
@SpringBootApplication
public class MockEmployeeApplication {
@Autowired
private ObjectMapper objectMapper;
public static void main(String[] args) {
SpringApplication.run(MockEmployeeApplication.class, args);
}
@PostConstruct
public void setUp() {
objectMapper.registerModule(new JavaTimeModule());
}
}
After that, Your LocalDate and LocalDateTime should be serialized and deserialized correctly.
Find an explanation below. You can check this link for more details - http://www.dotnetbull.com/2013/10/public-protected-private-internal-access-modifier-in-c.html
Private: - Private members are only accessible within the own type (Own class).
Internal: - Internal member are accessible only within the assembly by inheritance (its derived type) or by instance of class.
Reference :
By forking SPLITS repo, I built one to test iOS memory that can be allocated to the Today's Extension
iOSMemoryBudgetTestForExtension
Following is the result that i got in iPhone 5s
Memory Warning at 10 MB
App Crashed at 12 MB
By this means Apple is merely allowing any extensions to work with their full potential.
The kmalloc()
& vmalloc()
functions are a simple interface for obtaining kernel memory in byte-sized chunks.
The kmalloc()
function guarantees that the pages are physically contiguous (and virtually contiguous).
The vmalloc()
function works in a similar fashion to kmalloc()
, except it allocates memory that is only virtually contiguous and not necessarily physically contiguous.
This links might be helpful to convert.
https://code.google.com/p/flying-saucer/
https://today.java.net/pub/a/today/2007/06/26/generating-pdfs-with-flying-saucer-and-itext.html
If it is a college Project, you can even go for these, http://pd4ml.com/examples.htm
Example is given to convert HTML to PDF
As of today (2015, Aug., 1st), Apache2
in Debian Jessie
, you need to edit:
root@host:/etc/apache2/mods-enabled$ vi dir.conf
And change the order of that line, bringing index.php to the first position:
DirectoryIndex index.php index.html index.cgi index.pl index.xhtml index.htm
This is called partial functions and there are at least 3 ways to do this. My favorite way is using lambda because it avoids dependency on extra package and is the least verbose. Assume you have a function add(x, y)
and you want to pass add(3, y)
to some other function as parameter such that the other function decides the value for y
.
Use lambda
# generic function takes op and its argument
def runOp(op, val):
return op(val)
# declare full function
def add(x, y):
return x+y
# run example
def main():
f = lambda y: add(3, y)
result = runOp(f, 1) # is 4
Create Your Own Wrapper
Here you need to create a function that returns the partial function. This is obviously lot more verbose.
# generic function takes op and its argument
def runOp(op, val):
return op(val)
# declare full function
def add(x, y):
return x+y
# declare partial function
def addPartial(x):
def _wrapper(y):
return add(x, y)
return _wrapper
# run example
def main():
f = addPartial(3)
result = runOp(f, 1) # is 4
Use partial from functools
This is almost identical to lambda
shown above. Then why do we need this? There are few reasons. In short, partial
might be bit faster in some cases (see its implementation) and that you can use it for early binding vs lambda's late binding.
from functools import partial
# generic function takes op and its argument
def runOp(op, val):
return op(val)
# declare full function
def add(x, y):
return x+y
# run example
def main():
f = partial(add, 3)
result = runOp(f, 1) # is 4
You can do this pretty easily using Docker, so no extra libs required. Just run this command:
docker run --rm -it -v "$GOPATH":/go -w /go/src/github.com/iron-io/ironcli golang:1.4.2-cross sh -c '
for GOOS in darwin linux windows; do
for GOARCH in 386 amd64; do
echo "Building $GOOS-$GOARCH"
export GOOS=$GOOS
export GOARCH=$GOARCH
go build -o bin/ironcli-$GOOS-$GOARCH
done
done
'
You can find more details in this post: https://medium.com/iron-io-blog/how-to-cross-compile-go-programs-using-docker-beaa102a316d
I use the following from inside an activity:
private boolean isMyServiceRunning(Class<?> serviceClass) {
ActivityManager manager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
for (RunningServiceInfo service : manager.getRunningServices(Integer.MAX_VALUE)) {
if (serviceClass.getName().equals(service.service.getClassName())) {
return true;
}
}
return false;
}
And I call it using:
isMyServiceRunning(MyService.class)
This works reliably, because it is based on the information about running services provided by the Android operating system through ActivityManager#getRunningServices.
All the approaches using onDestroy or onSometing events or Binders or static variables will not work reliably because as a developer you never know, when Android decides to kill your process or which of the mentioned callbacks are called or not. Please note the "killable" column in the lifecycle events table in the Android documentation.
For the first example and base on the django's doc
It will always return the second list, indeed a non empty list is see as a True value for Python thus python return the 'last' True value so the second list
In [74]: mylist1 = [False]
In [75]: mylist2 = [False, True, False, True, False]
In [76]: mylist1 and mylist2
Out[76]: [False, True, False, True, False]
In [77]: mylist2 and mylist1
Out[77]: [False]
Like the others said:
inputString.split('\n') # --> ['Line 1', 'Line 2', 'Line 3']
This is identical to the above, but the string module's functions are deprecated and should be avoided:
import string
string.split(inputString, '\n') # --> ['Line 1', 'Line 2', 'Line 3']
Alternatively, if you want each line to include the break sequence (CR,LF,CRLF), use the splitlines
method with a True
argument:
inputString.splitlines(True) # --> ['Line 1\n', 'Line 2\n', 'Line 3']
You can also check out this little lib, containing the functionality you mention.
https://github.com/kovmarci86/android-secure-preferences
It is similar to some of the other aproaches here. Hope helps :)
Here program take time complexity is O(logn) and space complexity O(logn)
public class helper1 {
public static void main(String[] args) {
int a[] = {1, 2, 3, 4, 5, 7, 8, 9, 10, 11, 12};
int k = missing(a, 0, a.length);
System.out.println(k);
}
public static int missing(int[] a, int f, int l) {
int mid = (l + f) / 2;
//if first index reached last then no element found
if (a.length - 1 == f) {
System.out.println("missing not find ");
return 0;
}
//if mid with first found
if (mid == f) {
System.out.println(a[mid] + 1);
return a[mid] + 1;
}
if ((mid + 1) == a[mid])
return missing(a, mid, l);
else
return missing(a, f, mid);
}
}
Aria is used to improve the user experience of visually impaired users. Visually impaired users navigate though application using screen reader software like JAWS, NVDA,.. While navigating through the application, screen reader software announces content to users. Aria can be used to add content in the code which helps screen reader users understand role, state, label and purpose of the control
Aria does not change anything visually. (Aria is scared of designers too).
aria-hidden:
aria-hidden attribute is used to hide content for visually impaired users who navigate through application using screen readers (JAWS, NVDA,...).
aria-hidden attribute is used with values true, false.
How To Use:
<i class = "fa fa-books" aria-hidden = "true"></i>
using aria-hidden = "true" on the <i>
hides content to screen reader users with no visual change in the application.
aria-label
aria-label attribute is used to communicate the label to screen reader users. Usually search input field does not have visual label (thanks to designers). aria-label can be used to communicate the label of control to screen reader users
How To Use:
<input type = "edit" aria-label = "search" placeholder = "search">
There is no visual change in application. But screen readers can understand the purpose of control
aria-labelledby
Both aria-label and aria-labelledby is used to communicate the label. But aria-labelledby can be used to reference any label already present in the page whereas aria-label is used to communicate the label which i not displayed visually
Approach 1:
<span id = "sd"> Search </span>
<input type = "text" aria-labelledby = "sd">
aria-labelledby can also be used to combine two labels for screen reader users
Approach 2:
<span id = "de"> Billing Address </span>
<span id = "sd"> First Name </span>
<input type = "text" aria-labelledby = "de sd">
Don't know exactly what kind of dataset you have, so I provide general answer.
x <- c(1,2,NA,3,4,5)
y <- c(1,2,3,NA,6,8)
my.data <- data.frame(x, y)
> my.data
x y
1 1 1
2 2 2
3 NA 3
4 3 NA
5 4 6
6 5 8
# Exclude rows with NA values
my.data[complete.cases(my.data),]
x y
1 1 1
2 2 2
5 4 6
6 5 8
Something like this should be done following the best practices:
(function(){_x000D_
'use strict';_x000D_
var str = "testing";_x000D_
_x000D_
//using array methods_x000D_
var arr = new Array();_x000D_
arr = str.split("");_x000D_
arr.reverse();_x000D_
console.log(arr);_x000D_
_x000D_
//using custom methods_x000D_
var reverseString = function(str){_x000D_
_x000D_
if(str == null || str == undefined || str.length == 0 ){_x000D_
return "";_x000D_
}_x000D_
_x000D_
if(str.length == 1){_x000D_
return str;_x000D_
}_x000D_
_x000D_
var rev = [];_x000D_
for(var i = 0; i < str.length; i++){_x000D_
rev[i] = str[str.length - 1 - i];_x000D_
}_x000D_
return rev;_x000D_
} _x000D_
_x000D_
console.log(reverseString(str));_x000D_
_x000D_
})();
_x000D_
>>> import this
The Zen of Python, by Tim Peters
Beautiful is better than ugly.
Explicit is better than implicit.
Simple is better than complex.
Complex is better than complicated.
Flat is better than nested.
Sparse is better than dense.
Readability counts.
Special cases aren't special enough to break the rules.
Although practicality beats purity.
Errors should never pass silently.
Unless explicitly silenced.
In the face of ambiguity, refuse the temptation to guess.
There should be one-- and preferably only one --obvious way to do it.
Although that way may not be obvious at first unless you're Dutch.
Now is better than never.
Although never is often better than right now.
If the implementation is hard to explain, it's a bad idea.
If the implementation is easy to explain, it may be a good idea.
Namespaces are one honking great idea -- let's do more of those!
So, here is my opinion. Whenever you find an error, you should do something to handle it, i.e. write it in logfile or something else. At least, it informs you that there used to be a error.
UPDATE 2019-06-24
Based on the @Jodiug comment if you have a 1.15
version you can use the command:
kubectl rollout restart deployment/demo
Read more on the issue:
https://github.com/kubernetes/kubernetes/issues/13488
Well there is an interesting discussion about this subject on the kubernetes GitHub project. See the issue: https://github.com/kubernetes/kubernetes/issues/33664
From the solutions described there, I would suggest one of two.
1.Prepare deployment
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: demo
spec:
replicas: 1
template:
metadata:
labels:
app: demo
spec:
containers:
- name: demo
image: registry.example.com/apps/demo:master
imagePullPolicy: Always
env:
- name: FOR_GODS_SAKE_PLEASE_REDEPLOY
value: 'THIS_STRING_IS_REPLACED_DURING_BUILD'
2.Deploy
sed -ie "s/THIS_STRING_IS_REPLACED_DURING_BUILD/$(date)/g" deployment.yml
kubectl apply -f deployment.yml
kubectl patch deployment web -p \
"{\"spec\":{\"template\":{\"metadata\":{\"labels\":{\"date\":\"`date +'%s'`\"}}}}}"
Of course the imagePullPolicy: Always
is required on both cases.
you can do this with css3, this blurs the whole element
div (or whatever element) {
-webkit-filter: blur(5px);
-moz-filter: blur(5px);
-o-filter: blur(5px);
-ms-filter: blur(5px);
filter: blur(5px);
}
Fiddle: http://jsfiddle.net/H4DU4/
One particularly inelegant solution is to use JSON encoding to make deep copies of objects that do not have member methods. The methodology is to JSON encode your target object, then by decoding it, you get the copy you are looking for. You can decode as many times as you want to make as many copies as you need.
Of course, functions do not belong in JSON, so this only works for objects without member methods.
This methodology was perfect for my use case, since I'm storing JSON blobs in a key-value store, and when they are exposed as objects in a JavaScript API, each object actually contains a copy of the original state of the object so we can calculate the delta after the caller has mutated the exposed object.
var object1 = {key:"value"};
var object2 = object1;
object2 = JSON.stringify(object1);
object2 = JSON.parse(object2);
object2.key = "a change";
console.log(object1);// returns value
You have compiled your code with references to the correct math.h header file, but when you attempted to link it, you forgot the option to include the math library. As a result, you can compile your .o object files, but not build your executable.
As Paul has already mentioned add "-lm
" to link with the math library in the step where you are attempting to generate your executable.
Why for
sin()
in<math.h>
, do we need-lm
option explicitly; but, not forprintf()
in<stdio.h>
?
Because both these functions are implemented as part of the "Single UNIX Specification". This history of this standard is interesting, and is known by many names (IEEE Std 1003.1, X/Open Portability Guide, POSIX, Spec 1170).
This standard, specifically separates out the "Standard C library" routines from the "Standard C Mathematical Library" routines (page 277). The pertinent passage is copied below:
Standard C Library
The Standard C library is automatically searched by
cc
to resolve external references. This library supports all of the interfaces of the Base System, as defined in Volume 1, except for the Math Routines.Standard C Mathematical Library
This library supports the Base System math routines, as defined in Volume 1. The
cc
option-lm
is used to search this library.
The reasoning behind this separation was influenced by a number of factors:
The pressures that fed into the decision to put -lm
in a different library probably included, but are not limited to:
sin()
and putting it in a custom built library.In any case, it is now part of the standard to not be automatically included as part of the C language, and that's why you must add -lm
.
How can one test existence of an item in localStorage
?
this method works in internet explorer.
<script>
try{
localStorage.getItem("username");
}catch(e){
alert("we are in catch "+e.print);
}
</script>
You can use the --ignore-table option. So you could do
mysqldump -u USERNAME -pPASSWORD DATABASE --ignore-table=DATABASE.table1 > database.sql
There is no whitespace after -p
(this is not a typo).
To ignore multiple tables, use this option multiple times, this is documented to work since at least version 5.0.
If you want an alternative way to ignore multiple tables you can use a script like this:
#!/bin/bash
PASSWORD=XXXXXX
HOST=XXXXXX
USER=XXXXXX
DATABASE=databasename
DB_FILE=dump.sql
EXCLUDED_TABLES=(
table1
table2
table3
table4
tableN
)
IGNORED_TABLES_STRING=''
for TABLE in "${EXCLUDED_TABLES[@]}"
do :
IGNORED_TABLES_STRING+=" --ignore-table=${DATABASE}.${TABLE}"
done
echo "Dump structure"
mysqldump --host=${HOST} --user=${USER} --password=${PASSWORD} --single-transaction --no-data --routines ${DATABASE} > ${DB_FILE}
echo "Dump content"
mysqldump --host=${HOST} --user=${USER} --password=${PASSWORD} ${DATABASE} --no-create-info --skip-triggers ${IGNORED_TABLES_STRING} >> ${DB_FILE}
Kotlin's way -
fun Context.bitMapFromImgUrl(imageUrl: String, callBack: (bitMap: Bitmap) -> Unit) {
GlideApp.with(this)
.asBitmap()
.load(imageUrl)
.into(object : CustomTarget<Bitmap>() {
override fun onResourceReady(resource: Bitmap, transition: Transition<in Bitmap>?) {
callBack(resource)
}
override fun onLoadCleared(placeholder: Drawable?) {
// this is called when imageView is cleared on lifecycle call or for
// some other reason.
// if you are referencing the bitmap somewhere else too other than this imageView
// clear it here as you can no longer have the bitmap
}
})
}
The driver came disactivated by default you should active by yourself. after that it will work well.
I hope this do.
On vb.net you must write @ModelType.
Here's what I did to solve this problem
You can use the Path
api:
Path p = Paths.get(yourFileNameUri);
Path folder = p.getParent();
Strict mode eliminates errors that would be ignored in non-strict mode, thus making javascript “more secured”.
Is it considered among best practices?
Yes, It's considered part of the best practices while working with javascript to include Strict mode. This is done by adding the below line of code in your JS file.
'use strict';
in your code.
What does it mean to user agents?
Indicating that code should be interpreted in strict mode specifies to user agents like browsers that they should treat code literally as written, and throw an error if the code doesn't make sense.
For example: Consider in your .js
file you have the following code:
Scenario 1: [NO STRICT MODE]
var city = "Chicago"
console.log(city) // Prints the city name, i.e. Chicago
Scenario 2: [NO STRICT MODE]
city = "Chicago"
console.log(city) // Prints the city name, i.e. Chicago
So why does the variable name is being printed in both cases?
Without strict mode turned on, user agents often go through a series of modifications to problematic code in an attempt to get it to make sense. On the surface, this can seem like a fine thing, and indeed, working outside of strict mode makes it possible for people to get their feet wet with JavaScript code without having all the details quite nailed down. However, as a developer, I don't want to leave a bug in my code, because I know it could come back and bite me later on, and I also just want to write good code. And that's where strict mode helps out.
Scenario 3: [STRICT MODE]
'use strict';
city = "Chicago"
console.log(city) // Reference Error: asignment is undeclared variable city.
Additional tip: To maintain code quality using strict mode, you don't need to write this over and again especially if you have multiple .js
file. You can enforce this rule globally in eslint
rules as follows:
Filename: .eslintrc.js
module.exports = {
env: {
es6: true
},
rules : {
strict: ['error', 'global'],
},
};
Okay, so what is prevented in strict mode?
Using a variable without declaring it will throw an error in strict mode. This is to prevent unintentionally creating global variables throughout your application. The example with printing Chicago covers this in particular.
Deleting a variable or a function or an argument is a no-no in strict mode.
"use strict";
function x(p1, p2) {};
delete x; // This will cause an error
Duplicating a parameter name is not allowed in strict mode.
"use strict";
function x(p1, p1) {}; // This will cause an error
Reserved words in the Javascript language are not allowed in strict mode. The words are implements interface, let, packages, private, protected, public. static, and yield
For a more comprehensive list check out the MDN documentation here: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Strict_mode
Recursive traverse object or array with array or objects elements:
function traverse(&$objOrArray)
{
foreach ($objOrArray as $key => &$value)
{
if (is_array($value) || is_object($value))
{
traverse($value);
}
else
{
// DO SOMETHING
}
}
}
scanf
(and cousins) have one slightly strange characteristic: white space in (most placed in) the format string matches an arbitrary amount of white space in the input. As it happens, at least in the default "C" locale, a new-line is classified as white space.
This means the trailing '\n'
is trying to match not only a new-line, but any succeeding white-space as well. It won't be considered matched until you signal the end of the input, or else enter some non-white space character.
One way to deal with that is something like this:
scanf("%2000s %2000[^\n]%c", a, b, c);
if (c=='\n')
// we read the whole line
else
// the rest of the line was more than 2000 characters long. `c` contains a
// character from the input, and there's potentially more after that as well.
Depending on the situation, you might also want to check the return value from scanf
, which tells you the number of conversions that were successful. In this case, you'd be looking for 3
to indicate that all the conversions were successful.
move_uploaded_file()
will return:
FALSE
if file name is invalidFALSE
and issue a warning
in the error log if the apache process does not have read/write permissions to source or destination directoriesPHP Error Log
My php error log was at: /var/log/httpd/error_log
and had these errors:
Warning: move_uploaded_file(images/robot.jpg): failed to open stream: Permission denied in /var/www/html/mysite/mohealth.php on line 78
Warning: move_uploaded_file(): Unable to move '/tmp/phpsKD2Qm' to 'images/robot.jpg' in /var/www/html/mysite/mohealth.php on line 78
move_uploaded_file()
tries to move files from a temporary directory to a destination directory. When apache process tried to move files, it could not read the temporary or write to the destination dir.
Find which user is running Apache (Web Server)
Check which user is running the apache service by this command: ps aux | grep httpd
. The first column is the user name.
Check Read Permission at Temporary Dir: Your can find the path to your temp dir by calling echo sys_get_tmp_dir();
in a php page. Then on the command line, issue ls -ld /tmp/temporary-dir
to see if the apache user has access to read here
Check Write Permission at Destination Dir: issue ls -ld /var/www/html/destination-directory
to see if the apache user has access to write here
Add permissions as necessary using chown
or chgrp
Restart Apache using sudo service httpd restart
Your existing code just needs a little tweak. i
is the key, so you would just need to use it:
for i in d:
print i, d[i]
You can also get an iterator that contains both keys and values. In Python 2, d.items()
returns a list of (key, value) tuples, while d.iteritems()
returns an iterator that provides the same:
for k, v in d.iteritems():
print k, v
In Python 3, d.items()
returns the iterator; to get a list, you need to pass the iterator to list()
yourself.
for k, v in d.items():
print(k, v)
I'll add that if you want to read the dimensions, you can do this:
int[][][] a = new int[4][3][2];
System.out.println(a.length); // 4
System.out.println(a[0].length); // 3
System.out.println(a[0][0].length); //2
You can also have jagged arrays, where different rows have different lengths, so a[0].length != a[1].length
.
I had the same problem of @rutherford, today the new phpMyAdmin's 3.4.11.1 GUI is different, so I figure out it's better if someone improves the answers with updated info.
Full mysql logs can be found in:
"Status"->"Binary Log"
This is the answer, doesn't matter if you're using MAMP, XAMPP, LAMP, etc.
rimraf is an package for simulate linux command [rm -rf] in windows. which is useful for cross platform support. for install its CLI:
npm install rimraf -g
Contributing to ferrix example,
class Battery():
def __init__(self, battery_size = 60):
self.battery_size = battery_size
def get_range(self):
if self.battery_size == 70:
range = 240
elif self.battery_size == 85:
range = 270
message = "This car can go approx " + str(range)
message += "Fully charge"
print(message)
My message will not execute, because none of my conditions are fulfill therefore receiving " UnboundLocalError: local variable 'range' referenced before assignment"
def get_range(self):
if self.battery_size <= 70:
range = 240
elif self.battery_size >= 85:
range = 270
Ajax Submit form with out page refresh by using jquery ajax method first include library jquery.js and jquery-form.js then create form in html:
<form action="postpage.php" method="POST" id="postForm" >
<div id="flash_success"></div>
name:
<input type="text" name="name" />
password:
<input type="password" name="pass" />
Email:
<input type="text" name="email" />
<input type="submit" name="btn" value="Submit" />
</form>
<script>
var options = {
target: '#flash_success', // your response show in this ID
beforeSubmit: callValidationFunction,
success: YourResponseFunction
};
// bind to the form's submit event
jQuery('#postForm').submit(function() {
jQuery(this).ajaxSubmit(options);
return false;
});
});
function callValidationFunction()
{
// validation code for your form HERE
}
function YourResponseFunction(responseText, statusText, xhr, $form)
{
if(responseText=='success')
{
$('#flash_success').html('Your Success Message Here!!!');
$('body,html').animate({scrollTop: 0}, 800);
}else
{
$('#flash_success').html('Error Msg Here');
}
}
</script>
From the docs
Bitcode will allow apple to optimise the app without you having to submit another build. But, you can only enable this feature if all frameworks and apps in the app bundle have this feature enabled. Having it helps, but not having it should not have any negative impact.
For iOS apps, bitcode is the default, but optional. If you provide bitcode, all apps and frameworks in the app bundle need to include bitcode. For watchOS apps, bitcode is required.
The App Store and operating system optimize the installation of iOS and watchOS apps by tailoring app delivery to the capabilities of the user’s particular device, with minimal footprint. This optimization, called app thinning, lets you create apps that use the most device features, occupy minimum disk space, and accommodate future updates that can be applied by Apple. Faster downloads and more space for other apps and content provides a better user experience.
There should not be any performance impacts.
public function variables($variable="")
{
return empty($variable) ? mysql_query("SHOW VARIABLES") : mysql_query("SELECT @@$variable");
}
/*get datadir*/
$res = variables("datadir");
/*or get all variables*/
$res = variables();
You need to write a controller with ng-change
function in scope. In ng-change
callback you do a call to server and update completions. Here is a stub (without $http
as this is a plunk):
HTML
<!doctype html>
<html ng-app="plunker">
<head>
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.0.5/angular.js"></script>
<script src="http://angular-ui.github.io/bootstrap/ui-bootstrap-tpls-0.4.0.js"></script>
<script src="example.js"></script>
<link href="//netdna.bootstrapcdn.com/twitter-bootstrap/2.3.1/css/bootstrap-combined.min.css" rel="stylesheet">
</head>
<body>
<div class='container-fluid' ng-controller="TypeaheadCtrl">
<pre>Model: {{selected| json}}</pre>
<pre>{{states}}</pre>
<input type="text" ng-change="onedit()" ng-model="selected" typeahead="state for state in states | filter:$viewValue">
</div>
</body>
</html>
JS
angular.module('plunker', ['ui.bootstrap']);
function TypeaheadCtrl($scope) {
$scope.selected = undefined;
$scope.states = [];
$scope.onedit = function(){
$scope.states = [];
for(var i = 0; i < Math.floor((Math.random()*10)+1); i++){
var value = "";
for(var j = 0; j < i; j++){
value += j;
}
$scope.states.push(value);
}
}
}
Can you try the following?
psexec \\server cmd /c "echo . | powershell script.ps1"