public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_RIGHT ) {
//Right arrow key code
} else if (e.getKeyCode() == KeyEvent.VK_LEFT ) {
//Left arrow key code
} else if (e.getKeyCode() == KeyEvent.VK_UP ) {
//Up arrow key code
} else if (e.getKeyCode() == KeyEvent.VK_DOWN ) {
//Down arrow key code
}
repaint();
}
The KeyEvent codes are all a part of the API: http://docs.oracle.com/javase/7/docs/api/java/awt/event/KeyEvent.html
Line numbers were added to the IDLE editor two days ago and will appear in the upcoming 3.8.0a3 and later 3.7.5. For new windows, they are off by default, but this can be reversed on the Setting dialog, General tab, Editor section. For existing windows, there is a new Show (Hide) Line Numbers entry on the Options menu. There is currently no hotkey. One can select a line or bloc of lines by clicking on a line or clicking and dragging.
Some people may have missed Edit / Go to Line. The right-click context menu Goto File/Line works on grep (Find in Files) output as well as on trackbacks.
Try this code:
var id;
var vname;
function ajaxCall(){
for(var q = 1; q<=10; q++){
$.ajax({
url: 'api.php',
data: 'id1='+q+'',
dataType: 'json',
async:false,
success: function(data)
{
id = data[0];
vname = data[1];
},
complete: function (data) {
printWithAjax();
}
});
}//end of the for statement
}//end of ajax call function
The "complete" function executes only after the "success" of ajax. So try to call the printWithAjax() on "complete". This should work for you.
You can use the order()
function directly without resorting to add-on tools -- see this simpler answer which uses a trick right from the top of the example(order)
code:
R> dd[with(dd, order(-z, b)), ]
b x y z
4 Low C 9 2
2 Med D 3 1
1 Hi A 8 1
3 Hi A 9 1
Edit some 2+ years later: It was just asked how to do this by column index. The answer is to simply pass the desired sorting column(s) to the order()
function:
R> dd[order(-dd[,4], dd[,1]), ]
b x y z
4 Low C 9 2
2 Med D 3 1
1 Hi A 8 1
3 Hi A 9 1
R>
rather than using the name of the column (and with()
for easier/more direct access).
Depending on your Java class package name, you're probably 4 or 5 levels down the directory structure.
If your Java class package is, for example, com.stackoverflow.project, then your class is located at src/com/stackoverflow/project.
You can either move up the directory structure with multiple ../
, or you can move the text file to the same package as your class. It would be easier to move the text file.
The default value table only applies to initializing a variable.
Per the linked page, the following two methods of initialization are equivalent...
int x = 0;
int x = new int();
In your code, you merely defined the variable, but never initialized the object.
It is most efficient to simply iterate the array backwards.
I'm not sure if Aaron's solution does this vi this call Collections.reverse(list);
Does anyone know?
Use the collapse
argument to paste
:
paste(a,collapse=" ")
[1] "aa bb cc"
Add http:// in front of url
Incorrect
<a href="www.example.com">www.example.com</span></p>
Correct
<a href="http://www.example.com">www.example.com</span></p>
This works too:
https://www.google.pl/maps/@<lat>,<lon>,<zoom>z
With pointer:
https://www.google.com/maps/place/<lat>,<lon>/@<lat>,<lon>,<zoom>z
Try this:
To accept theirs changes: git merge --strategy-option theirs
To accept yours: git merge --strategy-option ours
You can do this:
a = a || 0
...which will convert a from any "falsey" value to 0
.
The "falsey" values are:
false
null
undefined
0
""
( empty string )NaN
( Not a Number )Or this if you prefer:
a = a ? a : 0;
...which will have the same effect as above.
If the intent was to test for more than just NaN
, then you can do the same, but do a toNumber conversion first.
a = +a || 0
This uses the unary + operator to try to convert a
to a number. This has the added benefit of converting things like numeric strings '123'
to a number.
The only unexpected thing may be if someone passes an Array that can successfully be converted to a number:
+['123'] // 123
Here we have an Array that has a single member that is a numeric string. It will be successfully converted to a number.
Ok, this is actually four different question. I'll address them one by one:
are both equals for the compiler? (speed, perf...)
Yes. The pointer dereferenciation and decay from type int (*)[100][280]
to int (*)[280]
is always a noop to your CPU. I wouldn't put it past a bad compiler to generate bogus code anyways, but a good optimizing compiler should compile both examples to the exact same code.
is one of these solutions eating more memory than the other?
As a corollary to my first answer, no.
what is the more frequently used by developers?
Definitely the variant without the extra (*pointer)
dereferenciation. For C programmers it is second nature to assume that any pointer may actually be a pointer to the first element of an array.
what is the best way, the 1st or the 2nd?
That depends on what you optimize for:
Idiomatic code uses variant 1. The declaration is missing the outer dimension, but all uses are exactly as a C programmer expects them to be.
If you want to make it explicit that you are pointing to an array, you can use variant 2. However, many seasoned C programmers will think that there's a third dimension hidden behind the innermost *
. Having no array dimension there will feel weird to most programmers.
First you store your text file in to raw folder.
private void loadWords() throws IOException {
Log.d(TAG, "Loading words...");
final Resources resources = mHelperContext.getResources();
InputStream inputStream = resources.openRawResource(R.raw.definitions);
BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
try {
String line;
while ((line = reader.readLine()) != null) {
String[] strings = TextUtils.split(line, "-");
if (strings.length < 2)
continue;
long id = addWord(strings[0].trim(), strings[1].trim());
if (id < 0) {
Log.e(TAG, "unable to add word: " + strings[0].trim());
}
}
} finally {
reader.close();
}
Log.d(TAG, "DONE loading words.");
}
You can use command line tool to build the release version. Next to your project folder, i.e.
$ ls
...
Foo.xcodeproj
...
Type the following build command:
$ xcodebuild -configuration Release
Logically OLAP functions are calculated after GROUP BY/HAVING, so you can only access columns in GROUP BY or columns with an aggregate function. Following looks strange, but is Standard SQL:
SELECT employee_number,
MAX(MAX(course_completion_date))
OVER (PARTITION BY course_code) AS max_course_date,
MAX(course_completion_date) AS max_date
FROM employee_course_completion
WHERE course_code IN ('M910303', 'M91301R', 'M91301P')
GROUP BY employee_number, course_code
And as Teradata allows re-using an alias this also works:
SELECT employee_number,
MAX(max_date)
OVER (PARTITION BY course_code) AS max_course_date,
MAX(course_completion_date) AS max_date
FROM employee_course_completion
WHERE course_code IN ('M910303', 'M91301R', 'M91301P')
GROUP BY employee_number, course_code
If FlexContext is not available:
Solution 1: inside method (>= Spring 2.0 required)
HttpServletRequest request =
((ServletRequestAttributes)RequestContextHolder.getRequestAttributes())
.getRequest();
Solution 2: inside bean (supported by >= 2.5, Spring 3.0 for singelton beans required!)
@Autowired
private HttpServletRequest request;
This is how i changed placeholder arrow color, the 2 classes are for dropdown open and dropdown closed, you need to change the #fff to the color you want:
.select2-container--default.select2-container--open .select2-selection--single .select2-selection__arrow b {
border-color: transparent transparent #fff transparent !important;
}
.select2-container--default .select2-selection--single .select2-selection__arrow b {
border-color: #fff transparent transparent transparent !important;
}
Ryan Farley has a great post about this in his blog, including all the reasons why not to write back into web.config files: Writing to Your .NET Application's Config File
This problem occurs when a same library is added into your project multiple times. If you haven't added the library multiple times intentionaly, check out the dependency/private libraries of the libraries you have added in your project, most probably they have already included a library which is causing this conflict.
<?php
$string = 'foo';
if (preg_match('/[\'^£$%&*()}{@#~?><>,|=_+¬-]/', $string))
{
// one or more of the 'special characters' found in $string
}
As seen on WWDC 2016/XCode 8 (what's new in LLVM session @5:05). Class properties can be declared as follows
@interface MyType : NSObject
@property (class) NSString *someString;
@end
NSLog(@"format string %@", MyType.someString);
Note that class properties are never synthesized
@implementation
static NSString * _someString;
+ (NSString *)someString { return _someString; }
+ (void)setSomeString:(NSString *)newString { _someString = newString; }
@end
If you are using kotlin you can try the following code,
In the sending activity,
val intent = Intent(context, RecorderService::class.java);
intent.putExtra("filename", filename);
context.startService(intent)
In the service,
override fun onStartCommand(intent: Intent, flags: Int, startId: Int): Int {
super.onStartCommand(intent, flags, startId)
if (intent != null && intent.extras != null)
val filename = intent.getStringExtra("filename")
}
This is my version:
public String convertBytestoString(InputStream inputStream)
{
int bytes;
byte[] buffer = new byte[1024];
bytes = inputStream.read(buffer);
String stringData = new String(buffer,0,bytes);
return stringData;
}
you could use the last-child psuedo class
table tr td:last-child {
border: none;
}
This will style the last td only. It's not fully supported yet so it may be unsuitable
if (/(^|;)\s*visited=/.test(document.cookie)) {
alert("Hello again!");
} else {
document.cookie = "visited=true; max-age=" + 60 * 60 * 24 * 10; // 60 seconds to a minute, 60 minutes to an hour, 24 hours to a day, and 10 days.
alert("This is your first time!");
}
is one way to do it. Note that document.cookie
is a magic property, so you don't have to worry about overwriting anything, either.
There are also more convenient libraries to work with cookies, and if you don’t need the information you’re storing sent to the server on every request, HTML5’s localStorage
and friends are convenient and useful.
android.os.Process.killProcess(android.os.Process.myPid());
This code kill the process from OS Using this code disturb the OS. So I would recommend you to use the below code
this.finish();
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_HOME);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
You need to convert the column into a 'TemplateField'.
In Designer View, click the smart tag of the GridView, select-> 'Edit columns'. Select your column you wish to modify and press the hyperlink converting it to a template. See screenshot: Converting column to template.
Note: Modifying your datasource might regenerate the columns again, so it might make changes to your template columns.
you can remove title by
dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
where dialog is name of my dialog .
Well Guys... Most of the Solutions up here didn't worked for. So this is how things worked for me..
HTML
<table>
<thead>
<tr>
<th style="border:none;height:26px;"></th>
<th style="border:none;height:26px;"></th>
.
.
</tr>
<tr>
<th style="border:1px solid black">ABC</th>
<th style="border:1px solid black">ABC</th>
.
.
<tr>
</thead>
<tbody>
//YOUR CODE
</tbody>
</table>
The first set of head is used as a dummy one so that there won't be a missing top border in 2nd head(i.e. original head) while page break.
1) Add the marker
2) find the backgroundcolor attribute for the css and change it.
Here it is:
JS
var myIcon = L.divIcon({
className: 'my-div-icon',
iconSize: [5, 5]
});
var marker = L.marker([50,-20], {icon: myIcon}).addTo(map);
marker.valueOf()._icon.style.backgroundColor = 'green'; //or any color
You could use tabs instead of spaces between columns, and/or set maximum size for a column in format strings ...
try this:
$('div[id^="player_"]')
Use multipart/mixed
with the first part as multipart/alternative
and subsequent parts for the attachments. In turn, use text/plain
and text/html
parts within the multipart/alternative
part.
A capable email client should then recognise the multipart/alternative
part and display the text part or html part as necessary. It should also show all of the subsequent parts as attachment parts.
The important thing to note here is that, in multipart MIME messages, it is perfectly valid to have parts within parts. In theory, that nesting can extend to any depth. Any reasonably capable email client should then be able to recursively process all of the message parts.
As the other answers state, you need to select an active scheme to something that is not a simulator, i.e. a device that's connected to your mac.
If you have no device connected to the mac then selecting "Generic IOS Device" works also.
Why reindexing? Just add 1 to the index:
foreach ($array as $key => $val) {
echo $key + 1, '<br>';
}
Edit After the question has been clarified: You could use the array_values
to reset the index starting at 0. Then you could use the algorithm above if you just want printed elements to start at 1.
I think I know what may cause this error.
In google chrome there is an in-built feature to prevent ddos attacks for google chrome extensions.
When ajax requests continuously return 500+ status errors, it starts to throttle the requests.
Hence it is possible to receive status 0 on following requests.
If you want to tag the branch you are in, then type:
git tag <tag>
and push the branch with:
git push origin --tags
sendStickyBroadcast()
performs a sendBroadcast(Intent)
known as sticky, i.e. the Intent you are sending stays around after the broadcast is complete, so that others can quickly retrieve that data through the return value of registerReceiver(BroadcastReceiver, IntentFilter)
. In all other ways, this behaves the same as sendBroadcast(Intent)
. One example of a sticky broadcast sent via the operating system is ACTION_BATTERY_CHANGED
. When you call registerReceiver()
for that action -- even with a null BroadcastReceiver
-- you get the Intent that was last broadcast for that action. Hence, you can use this to find the state of the battery without necessarily registering for all future state changes in the battery.
You can always use Request.QueryString
collection like Web forms, but you can also make MVC handle them and pass them as parameters. This is the suggested way as it's easier and it will validate input data type automatically.
First go to the directory where your python script is present by using-
cd path/to/directory
then simply do:
python file_name.py
when: myvar | default('', true) | trim != ''
I use | trim != ''
to check if a variable has an empty value or not. I also always add the | default(..., true)
check to catch when myvar
is undefined too.
If you don't mind a third party dependency, there is a class named Collectors2 in Eclipse Collections which contains methods returning Collectors for summing and summarizing BigDecimal and BigInteger. These methods take a Function as a parameter so you can extract a BigDecimal or BigInteger value from an object.
List<BigDecimal> list = mList(
BigDecimal.valueOf(0.1),
BigDecimal.valueOf(1.1),
BigDecimal.valueOf(2.1),
BigDecimal.valueOf(0.1));
BigDecimal sum =
list.stream().collect(Collectors2.summingBigDecimal(e -> e));
Assert.assertEquals(BigDecimal.valueOf(3.4), sum);
BigDecimalSummaryStatistics statistics =
list.stream().collect(Collectors2.summarizingBigDecimal(e -> e));
Assert.assertEquals(BigDecimal.valueOf(3.4), statistics.getSum());
Assert.assertEquals(BigDecimal.valueOf(0.1), statistics.getMin());
Assert.assertEquals(BigDecimal.valueOf(2.1), statistics.getMax());
Assert.assertEquals(BigDecimal.valueOf(0.85), statistics.getAverage());
Note: I am a committer for Eclipse Collections.
As of 2.x, Apache Log4j has this check built in, so having isDebugEnabled()
isn't necessary anymore. Just do a debug()
and the messages will be suppressed if not enabled.
Same idea as Michael Waterfall
From CodeIgniter
// Lets you determine whether an array index is set and whether it has a value.
// If the element is empty it returns FALSE (or whatever you specify as the default value.)
function element($item, $array, $default = FALSE)
{
if ( ! isset($array[$item]) OR $array[$item] == "")
{
return $default;
}
return $array[$item];
}
You can try the margin
property in the Container
. Wrap the TextField
inside a Container
and adjust the margin
property.
new Container(
margin: const EdgeInsets.only(right: 10, left: 10),
child: new TextField(
decoration: new InputDecoration(
hintText: 'username',
icon: new Icon(Icons.person)),
)
),
Trim just removes the trailing and leading whitespace. Use .replace(/ /g, "") if there are just spaces to be replaced.
this.maintabinfo = this.inner_view_data.replace(/ /g, "").toLowerCase();
You can use COUNTIFS for multiple criteria,
=1/COUNTIFS(A:A,A2,B:B,B2) and then drag down. You can put as many criteria as you want in there, but it tends to take a lot of time to process.
If you have already installed app on your device, try to change bundle identifer on the web .plist (not app plist) with something else like "com.vistair.docunet-test2", after that refresh webpage and try to reinstall... It works for me
You can do it using only the shell, no need for tr
or sed
$ str="This is just a test"
$ echo ${str// /_}
This_is_just_a_test
Take a look at the Event Log API. Case a) (bluescreen, user cut the power cord or system hang) causes a note ('system did not shutdown correctly' or something like that) to be left in the 'System' event log the next time the system is rebooted properly. You should be able to access it programmatically using the above API (honestly, I've never used it but it should work).
You have to change androidx.constraintlayout.widget.ConstraintLayout
to RelativeLayout
.
Example
//In Model
public class MyModel
{
[Required]
public string Name{ get; set; }
}
//In PartailView //PartailView.cshtml
@model MyModel
<div>
<div>
@Html.LabelFor(model=>model.Name)
</div>
<div>
@Html.EditorFor(model=>model.Name)
@Html.ValidationMessageFor(model => model.Name)
</div>
</div>
In Index.cshtml view
@model MyModel
<div id="targetId">
@{Html.RenderPartial("PartialView",Model)}
</div>
@using(Ajax.BeginForm("AddName", new AjaxOptions { UpdateTargetId = "targetId", HttpMethod = "Post" }))
{
<div>
<input type="submit" value="Add Unit" />
</div>
}
In Controller
public ActionResult Index()
{
return View(new MyModel());
}
public string AddName(MyModel model)
{
string HtmlString = RenderPartialViewToString("PartailView",model);
return HtmlString;
}
protected string RenderPartialViewToString(string viewName, object model)
{
if (string.IsNullOrEmpty(viewName))
viewName = ControllerContext.RouteData.GetRequiredString("action");
ViewData.Model = model;
using (StringWriter sw = new StringWriter())
{
ViewEngineResult viewResult = ViewEngines.Engines.FindPartialView(ControllerContext, viewName);
ViewContext viewContext = new ViewContext(ControllerContext, viewResult.View, ViewData, TempData, sw);
viewResult.View.Render(viewContext, sw);
return sw.GetStringBuilder().ToString();
}
}
you must be pass ViewName and Model to RenderPartialViewToString method. it will return you view with validation which are you applied in model and append the content in "targetId" div in Index.cshtml. I this way by catching RenderHtml of partial view you can apply validation.
git reset HEAD^
then the modified files should show up.
You could move the modified files into a new branch
use,
git checkout -b newbranch
git checkout commit -m "files modified"
git push origin newbranch
git checkout master
then you should be on a clean branch, and your changes should be stored in newbranch. You could later just merge this change into the master branch
If you're using AD you can use serverless binding to locate a domain controller for the default domain, then use LDAP://rootDSE to get information about the directory server, as described in the linked article.
if you use one line folder or file
chmod 755 $(find /yourfolder -type d)
chmod 644 $(find /yourfolder -type f)
This is working code
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
DropDownList1.DataTextField = "user_name";
DropDownList1.DataValueField = "user_id";
DropDownList1.DataSource = getData();// get the data into the list you can set it
DropDownList1.DataBind();
DropDownList1.SelectedIndex = DropDownList1.Items.IndexOf(DropDownList1.Items.FindByText("your default selected text"));
}
}
The parallel collector will throw an OutOfMemoryError
if too much time is being spent in garbage collection. In particular, if more than 98% of the total time is spent in garbage collection and less than 2% of the heap is recovered, OutOfMemoryError
will be thrown. This feature is designed to prevent applications from running for an extended period of time while making little or no progress because the heap is too small. If necessary, this feature can be disabled by adding the option -XX:-UseGCOverheadLimit
to the command line.
To get a definitive reason, you'd need to ask the designer(s) of that API.
But one possible reason is that the intent of a (hypothetical) nextChar
would not fit into the scanning model very well.
If nextChar()
to behaved like read()
on a Reader
and simply returned the next unconsumed character from the scanner, then it is behaving inconsistently with the other next<Type>
methods. These skip over delimiter characters before they attempt to parse a value.
If nextChar()
to behaved like (say) nextInt
then:
the delimiter skipping would be "unexpected" for some folks, and
there is the issue of whether it should accept a single "raw" character, or a sequence of digits that are the numeric representation of a char
, or maybe even support escaping or something1.
No matter what choice they made, some people wouldn't be happy. My guess is that the designers decided to stay away from the tarpit.
1 - Would vote strongly for the raw character approach ... but the point is that there are alternatives that need to be analysed, etc.
so if you need want use this code )
import { useRoutes } from "./routes";
import { BrowserRouter as Router } from "react-router-dom";
export const App = () => {
const routes = useRoutes(true);
return (
<Router>
<div className="container">{routes}</div>
</Router>
);
};
// ./routes.js
import { Switch, Route, Redirect } from "react-router-dom";
export const useRoutes = (isAuthenticated) => {
if (isAuthenticated) {
return (
<Switch>
<Route path="/links" exact>
<LinksPage />
</Route>
<Route path="/create" exact>
<CreatePage />
</Route>
<Route path="/detail/:id">
<DetailPage />
</Route>
<Redirect path="/create" />
</Switch>
);
}
return (
<Switch>
<Route path={"/"} exact>
<AuthPage />
</Route>
<Redirect path={"/"} />
</Switch>
);
};
Short and easy, for arrays, strings or also objects.
function console_log( $data ) {
$output = "<script>console.log( 'PHP debugger: ";
$output .= json_encode(print_r($data, true));
$output .= "' );</script>";
echo $output;
}
RaYell,
You don't need to parse the value returned. document.getElementById("FileUpload1").value
returns only the file name with extension.
This was useful for me because I wanted to copy the name of the file to be uploaded to an input box called 'title'. In my application, the uploaded file is renamed to the index generated by the backend database and the title is stored in the database.
As +Volatility and yourself pointed out, sets are unordered. If you need the elements to be in order, just call sorted
on the set:
>>> y = [1, 1, 6, 6, 6, 6, 6, 8, 8]
>>> sorted(set(y))
[1, 6, 8]
To do links, you can do
.social h2 a:link {
color: pink;
font-size: 14px;
}
You can change the hover, visited, and active link styling too. Just replace "link" with what you want to style. You can learn more at the w3schools page CSS Links.
I added customBinding to the web.config.
<configuration>
<system.serviceModel>
<bindings>
<customBinding>
<binding name="CustomSoapBinding">
<security includeTimestamp="false"
authenticationMode="UserNameOverTransport"
defaultAlgorithmSuite="Basic256"
requireDerivedKeys="false"
messageSecurityVersion="WSSecurity10WSTrustFebruary2005WSSecureConversationFebruary2005WSSecurityPolicy11BasicSecurityProfile10">
</security>
<textMessageEncoding messageVersion="Soap11"></textMessageEncoding>
<httpsTransport maxReceivedMessageSize="2000000000"/>
</binding>
</customBinding>
</bindings>
<client>
<endpoint address="https://test.com:443/services/testService"
binding="customBinding"
bindingConfiguration="CustomSoapBinding"
contract="testService.test"
name="test" />
</client>
</system.serviceModel>
<startup>
<supportedRuntime version="v4.0"
sku=".NETFramework,Version=v4.0"/>
</startup>
</configuration>
After adding customBinding, I can pass username and password to client service like as follows:
service.ClientCridentials.UserName.UserName = "testUser";
service.ClientCridentials.UserName.Password = "testPass";
In this way you can pass username, password in the header to a SOAP WCF Service.
I got the same Exception: Java gateway process exited before sending the driver its port number
in Cloudera VM when trying to start IPython with CSV support with a syntax error:
PYSPARK_DRIVER_PYTHON=ipython pyspark --packages com.databricks:spark-csv_2.10.1.4.0
will throw the error, while:
PYSPARK_DRIVER_PYTHON=ipython pyspark --packages com.databricks:spark-csv_2.10:1.4.0
will not.
The difference is in that last colon in the last (working) example, seperating the Scala version number from the package version number.
The standard MIME type for ZIP files is application/zip
. The types for the files inside the ZIP does not matter for the MIME type.
As always, it ultimately depends on your server setup.
I see a lot of these answers rely on reading the whole text file into memory instead of taking it one chunk at a time. Here's my solution in nice modern Swift, using FileHandle to keep memory impact low:
enum MyError {
case invalidTextFormat
}
extension FileHandle {
func readLine(maxLength: Int) throws -> String {
// Read in a string of up to the maximum length
let offset = offsetInFile
let data = readData(ofLength: maxLength)
guard let string = String(data: data, encoding: .utf8) else {
throw MyError.invalidTextFormat
}
// Check for carriage returns; if none, this is the whole string
let substring: String
if let subindex = string.firstIndex(of: "\n") {
substring = String(string[string.startIndex ... subindex])
} else {
substring = string
}
// Wind back to the correct offset so that we don't miss any lines
guard let dataCount = substring.data(using: .utf8, allowLossyConversion: false)?.count else {
throw MyError.invalidTextFormat
}
try seek(toOffset: offset + UInt64(dataCount))
return substring
}
}
Note that this preserves the carriage return at the end of the line, so depending on your needs you may want to adjust the code to remove it.
Usage: simply open a file handle to your target text file and call readLine
with a suitable maximum length - 1024 is standard for plain text, but I left it open in case you know it will be shorter. Note that the command will not overflow the end of the file, so you may have to check manually that you've not reached it if you intend to parse the entire thing. Here's some sample code that shows how to open a file at myFileURL
and read it line-by-line until the end.
do {
let handle = try FileHandle(forReadingFrom: myFileURL)
try handle.seekToEndOfFile()
let eof = handle.offsetInFile
try handle.seek(toFileOffset: 0)
while handle.offsetInFile < eof {
let line = try handle.readLine(maxLength: 1024)
// Do something with the string here
}
try handle.close()
catch let error {
print("Error reading file: \(error.localizedDescription)"
}
% ps -o args -C nginx
COMMAND
build/sbin/nginx -c ../test.conf
If nginx was run without the -c
option, then you can use the -V
option to find out the configure arguments that were set to non-standard values. Among them the most interesting for you are:
--prefix=PATH set installation prefix
--sbin-path=PATH set nginx binary pathname
--conf-path=PATH set nginx.conf pathname
You need to provide a body for the get;
portion as well as the set;
portion of the property.
I suspect you want this to be:
private int _hour; // backing field
private int Hour
{
get { return _hour; }
set
{
//make sure hour is positive
if (value < MIN_HOUR)
{
_hour = 0;
MessageBox.Show("Hour value " + value.ToString() + " cannot be negative. Reset to " + MIN_HOUR.ToString(),
"Invalid Hour", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
else
{
//take the modulus to ensure always less than 24 hours
//works even if the value is already within range, or value equal to 24
_hour = value % MAX_HOUR;
}
}
}
That being said, I'd also consider making this code simpler. It's probably is better to use exceptions rather than a MessageBox inside of your property setter for invalid input, as it won't tie you to a specific UI framework.
If that is inappropriate, I would recommend converting this to a method instead of using a property setter. This is especially true since properties have an implicit expectation of being "lightweight"- and displaying a MessageBox to the user really violates that expectation.
I've solved the same issue with adding an alias like:
alias ng="path-to-your-global-node-modules/angular-cli/bin/ng"
David Wolever's solution is good, but
If you want to have signed angles you have to determine if a given pair is right or left handed (see wiki for further info).
My solution for this is:
def unit_vector(vector):
""" Returns the unit vector of the vector"""
return vector / np.linalg.norm(vector)
def angle(vector1, vector2):
""" Returns the angle in radians between given vectors"""
v1_u = unit_vector(vector1)
v2_u = unit_vector(vector2)
minor = np.linalg.det(
np.stack((v1_u[-2:], v2_u[-2:]))
)
if minor == 0:
raise NotImplementedError('Too odd vectors =(')
return np.sign(minor) * np.arccos(np.clip(np.dot(v1_u, v2_u), -1.0, 1.0))
It's not perfect because of this NotImplementedError
but for my case it works well. This behaviour could be fixed (cause handness is determined for any given pair) but it takes more code that I want and have to write.
git rm --cached file
should do what you want.
You can read more details at git help rm
May be it will helpful:
<Border BorderBrush="Black" BorderThickness="1" HorizontalAlignment="Left" Height="160" Margin="10,55,0,0" VerticalAlignment="Top" Width="492"/>
My solution is
fig = plt.figure()
fig.add_subplot(1, 2, 1) #top and bottom left
fig.add_subplot(2, 2, 2) #top right
fig.add_subplot(2, 2, 4) #bottom right
plt.show()
As of July 2012, the WebAudio API is now supported in Chrome, and at least partly supported in Firefox, and is slated to be added to IOS as of version 6.
Although it is robust enough to be used programatically for basic tasks, the Audio element was never meant to provide full audio support for games, etc. It was designed to allow a single piece of media to be embedded in a page, similar to an img tag. There are a lot of issues with trying to use the Audio tag for games:
I used this Getting Started With WebAudio article to get started with the WebAudio API. The FieldRunners WebAudio Case Study is also a good read.
I'm late to the party, but the following is the Regular Expression I use:
(?:,"|^")(""|[\w\W]*?)(?=",|"$)|(?:,(?!")|^(?!"))([^,]*?)(?=$|,)|(\r\n|\n)
This pattern has three capturing groups:
This pattern handles all of the following:
If you have are using a more capable flavor of regex with named groups and lookbehinds, I prefer the following:
(?<quoted>(?<=,"|^")(?:""|[\w\W]*?)*(?=",|"$))|(?<normal>(?<=,(?!")|^(?!"))[^,]*?(?=(?<!")$|(?<!"),))|(?<eol>\r\n|\n)
Edit
(?:^"|,")(""|[\w\W]*?)(?=",|"$)|(?:^(?!")|,(?!"))([^,]*?)(?=$|,)|(\r\n|\n)
This slightly modified pattern handles lines where the first column is empty as long as you are not using Javascript. For some reason Javascript will omit the second column with this pattern. I was unable to correctly handle this edge-case.
You're looking at this wrong. Yes a linear search of a List will beat a HashSet for a small number of items. But the performance difference usually doesn't matter for collections that small. It's generally the large collections you have to worry about, and that's where you think in terms of Big-O. However, if you've measured a real bottleneck on HashSet performance, then you can try to create a hybrid List/HashSet, but you'll do that by conducting lots of empirical performance tests - not asking questions on SO.
print("the furnace is now " + str(temperature) + "degrees!")
cast it to str
Here is one you might like it uses the Windows FileDialog(msoFileDialogFilePicker) to browse to a closed workbook on your desktop, then copies all of the worksheets to your open workbook:
Sub CopyWorkBookFullv2()
Application.ScreenUpdating = False
Dim ws As Worksheet
Dim x As Integer
Dim closedBook As Workbook
Dim cell As Range
Dim numSheets As Integer
Dim LString As String
Dim LArray() As String
Dim dashpos As Long
Dim FileName As String
numSheets = 0
For Each ws In Application.ActiveWorkbook.Worksheets
If ws.Name <> "Sheet1" Then
Sheets.Add.Name = "Sheet1"
End If
Next
Dim fileExplorer As FileDialog
Set fileExplorer = Application.FileDialog(msoFileDialogFilePicker)
Dim MyString As String
fileExplorer.AllowMultiSelect = False
With fileExplorer
If .Show = -1 Then 'Any file is selected
MyString = .SelectedItems.Item(1)
Else ' else dialog is cancelled
MsgBox "You have cancelled the dialogue"
[filePath] = "" ' when cancelled set blank as file path.
End If
End With
LString = Range("A1").Value
dashpos = InStr(1, LString, "\") + 1
LArray = Split(LString, "\")
'MsgBox LArray(dashpos - 1)
FileName = LArray(dashpos)
strFileName = CreateObject("WScript.Shell").specialfolders("Desktop") & "\" & FileName
Set closedBook = Workbooks.Open(strFileName)
closedBook.Application.ScreenUpdating = False
numSheets = closedBook.Sheets.Count
For x = 1 To numSheets
closedBook.Sheets(x).Copy After:=ThisWorkbook.Sheets(1)
x = x + 1
If x = numSheets Then
GoTo 1000
End If
Next
1000
closedBook.Application.ScreenUpdating = True
closedBook.Close
Application.ScreenUpdating = True
End Sub
Yes, Daniel is correct, but to expand upon his answer, your primary app component would need to have a navbar component within it. That way, when you render the primary app (any page under the '/' path), it would also display the navbar. I am guessing that you wouldn't want your login page to display the navbar, so that shouldn't be a nested component, and should instead be by itself. So your routes would end up looking something like this:
<Router>
<Route path="/" component={App}>
<Route path="page1" component={Page1} />
<Route path="page2" component={Page2} />
</Route>
<Route path="/login" component={Login} />
</Router>
And the other components would look something like this:
var NavBar = React.createClass({
render() {
return (
<div>
<ul>
<a onClick={() => history.push('page1') }>Page 1</a>
<a onClick={() => history.push('page2') }>Page 2</a>
</ul>
</div>
)
}
});
var App = React.createClass({
render() {
return (
<div>
<NavBar />
<div>Other Content</div>
{this.props.children}
</div>
)
}
});
Your question is a little unclear, but if what you're doing is trying to get your friend's latest changes, then typically what your friend needs to do is to push those changes up to a remote repo (like one hosted on GitHub), and then you fetch or pull those changes from the remote:
Your friend pushes his changes to GitHub:
git push origin <branch>
Clone the remote repository if you haven't already:
git clone https://[email protected]/abc/theproject.git
Fetch or pull your friend's changes (unnecessary if you just cloned in step #2 above):
git fetch origin
git merge origin/<branch>
Note that git pull
is the same as doing the two steps above:
git pull origin <branch>
The following works for text entries both with and without spaces:
$("#mySelect1").find("option[text=" + text1 + "]").attr("selected", true);
Using can also use Java 8 stream API and do the same thing in one line.
If you want to print any specific property then use this syntax:
ArrayList<Room> rooms = new ArrayList<>();
rooms.forEach(room -> System.out.println(room.getName()));
OR
ArrayList<Room> rooms = new ArrayList<>();
rooms.forEach(room -> {
// here room is available
});
if you want to print all the properties of Java object then use this:
ArrayList<Room> rooms = new ArrayList<>();
rooms.forEach(System.out::println);
function getURLParameter(name) {
return decodeURIComponent((new RegExp('[?|&]' + name + '=' + '([^&;]+?)(&|#|;|$)').exec(location.search) || [null, ''])[1].replace(/\+/g, '%20')) || null;
}
So you can use:
myvar = getURLParameter('myvar');
for quick one time use this works, npm install --python="c:\python27"
Fixed length problem nvarchar and added NULL/NOT NULL
DECLARE @collate nvarchar(100);
DECLARE @table nvarchar(255);
DECLARE @column_name nvarchar(255);
DECLARE @column_id int;
DECLARE @data_type nvarchar(255);
DECLARE @max_length int;
DECLARE @row_id int;
DECLARE @sql nvarchar(max);
DECLARE @sql_column nvarchar(max);
DECLARE @is_Nullable bit;
DECLARE @null nvarchar(25);
SET @collate = 'Latin1_General_CI_AS';
DECLARE local_table_cursor CURSOR FOR
SELECT [name]
FROM sysobjects
WHERE OBJECTPROPERTY(id, N'IsUserTable') = 1
OPEN local_table_cursor
FETCH NEXT FROM local_table_cursor
INTO @table
WHILE @@FETCH_STATUS = 0
BEGIN
DECLARE local_change_cursor CURSOR FOR
SELECT ROW_NUMBER() OVER (ORDER BY c.column_id) AS row_id
, c.name column_name
, t.Name data_type
, c.max_length
, c.column_id
, c.is_nullable
FROM sys.columns c
JOIN sys.types t ON c.system_type_id = t.system_type_id
LEFT OUTER JOIN sys.index_columns ic ON ic.object_id = c.object_id AND ic.column_id = c.column_id
LEFT OUTER JOIN sys.indexes i ON ic.object_id = i.object_id AND ic.index_id = i.index_id
WHERE c.object_id = OBJECT_ID(@table)
ORDER BY c.column_id
OPEN local_change_cursor
FETCH NEXT FROM local_change_cursor
INTO @row_id, @column_name, @data_type, @max_length, @column_id, @is_nullable
WHILE @@FETCH_STATUS = 0
BEGIN
IF (@max_length = -1) SET @max_length = 4000;
set @null=' NOT NULL'
if (@is_nullable = 1) Set @null=' NULL'
if (@Data_type='nvarchar') set @max_length=cast(@max_length/2 as bigint)
IF (@data_type LIKE '%char%')
BEGIN TRY
SET @sql = 'ALTER TABLE ' + @table + ' ALTER COLUMN [' + rtrim(@column_name) + '] ' + @data_type + '(' + CAST(@max_length AS nvarchar(100)) + ') COLLATE ' + @collate + @null
PRINT @sql
EXEC sp_executesql @sql
END TRY
BEGIN CATCH
PRINT 'ERROR: Some index or contraint rely on the column ' + @column_name + '. No conversion possible.'
PRINT @sql
END CATCH
FETCH NEXT FROM local_change_cursor
INTO @row_id, @column_name, @data_type, @max_length, @column_id, @is_Nullable
END
CLOSE local_change_cursor
DEALLOCATE local_change_cursor
FETCH NEXT FROM local_table_cursor
INTO @table
END
CLOSE local_table_cursor
DEALLOCATE local_table_cursor
GO
id
is a property of an html Element
. However, when you write $("#something")
, it returns a jQuery object that wraps the matching DOM element(s). To get the first matching DOM element back, call get(0)
$("#test").get(0)
On this native element, you can call id, or any other native DOM property or function.
$("#test").get(0).id
That's the reason why id
isn't working in your code.
Alternatively, use jQuery's attr
method as other answers suggest to get the id
attribute of the first matching element.
$("#test").attr("id")
What I just did, to open a simple python script by double clicking. I just added a batch file to the directory containing the script:
@echo off
python exercise.py
pause>nul
(I have the python executable on my system path. If not one would need include its complete path of course.)
Then I just can double click on the batch file to run the script. The third line keeps the cmd window from being dismissed as soon as the script ends, so you can see the results. :) When you're done just close the command window.
to access localhost on emulator: 10.0.2.2. However this may not always work for example if you have something other than a web server such as XMPP server.
assuming that you're on the same wireless network...
find your local ip (should be something 192.168.1.x) - go to the command line and type 'ipconfig' to get this. where x is the assigned local ip of the server machine.
use your local ip for your android device to connect to your localhost.
it worked for me.
I've resolved the issue, by going to setting and permalink, just choose post-name.
it should work and you'll see the exact page.. rather than dashboard/xampp page again
Best of Luck
You can find the default Android menu icons here - link is broken now.
Update: You can find Material Design icons here.
In config/app.php file make a instance of env variable like 'name' => env('APP_NAME', 'Laravel')
& In your controller call it like config('app.name')
Run following commands php artisan config:cache
php artisan cache:clear
if it is not working.
use a blackslash not a forwardslash. \n
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="title">Hello\nWorld!</string>
</resources>
Also, if you plan on using the string as HTML, you can use <br />
for a line break(<br />
)
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="title">Hello<br />World!</string>
</resources>
public class Console {
public static void Log(Object obj){
System.out.println(obj);
}
}
to call and use as JavaScript just do this:
Console.Log (Object)
I think that's what you mean
Sounds like a case for DefaultIfEmpty
(untested code follows):
Dim x = (From y In context.MyTable _
Where y.MyField = value _
Select y.MyCounter).DefaultIfEmpty.Max
Assume you stored that dictionary in a variable called values. To get id
in to a variable, do:
idValue = values['criteria'][0]['id']
If that json is in a file, do the following to load it:
import json
jsonFile = open('your_filename.json', 'r')
values = json.load(jsonFile)
jsonFile.close()
If that json is from a URL, do the following to load it:
import urllib, json
f = urllib.urlopen("http://domain/path/jsonPage")
values = json.load(f)
f.close()
To print ALL of the criteria, you could:
for criteria in values['criteria']:
for key, value in criteria.iteritems():
print key, 'is:', value
print ''
If you are using Oracle 12c, use:
FETCH NEXT N ROWS ONLY
SELECT DISTINCT
APP_ID,
NAME,
STORAGE_GB,
HISTORY_CREATED,
TO_CHAR(HISTORY_DATE, 'DD.MM.YYYY') AS HISTORY_DATE
FROM HISTORY WHERE
STORAGE_GB IS NOT NULL AND
APP_ID NOT IN (SELECT APP_ID FROM HISTORY WHERE TO_CHAR(HISTORY_DATE, 'DD.MM.YYYY') ='06.02.2009')
ORDER BY STORAGE_GB DESC
FETCH NEXT 10 ROWS ONLY
More info: http://docs.oracle.com/javadb/10.5.3.0/ref/rrefsqljoffsetfetch.html
I would say "Yes". As "Matz" had said something like this in one of his talks, "Ruby objects have no types." Not all of it but the part that he is trying to get across to us. Why would anyone have said "Everything is an Object" then? To add he said "Data has Types not objects".
So we might enjoy this.
https://www.youtube.com/watch?v=1l3U1X3z0CE
But Ruby doesn't care to much about the type of object just the class. We use classes not types. All data then has a class.
12345.class
'my string'.class
They may also have ancestors
Object.ancestors
They also have meta classes but I'll save you the details on that.
Once you know the class then you'll be able to lookup what methods you may use for it. That's where the "data type" is needed. If you really want to get into details the look up...
"The Ruby Object Model"
This is the term used for how Ruby handles objects. It's all internal so you don't really see much of this but it's nice to know. But that's another topic.
Yes! The class is the data type. Objects have classes and data has types. So if you know about data bases then you know there are only a finite set of types.
text blocks numbers
div[disabled]
{
pointer-events: none;
opacity: 0.7;
}
The above code makes the contents of the div disabled. You can make div disabled by adding disabled attribute.
<div disabled>
/* Contents */
</div>
Had the same problem using SourceTree. But there were no any index.lock file on my host at all. I've found packed-refs.lock file, and after deleting it, the problem was solved.
For Python 3.2+ simple-date is a wrapper around pytz that tries to simplify things.
If you have a time
then
SimpleDate(time).convert(tz="...")
may do what you want. But timezones are quite complex things, so it can get significantly more complicated - see the the docs.
I found this question while looking for a similar solution. I modified the answer that @Dale gave to suit my purposes. I wanted something that was a little more flexible and had some error trapping. Just thought I might put it here for anyone looking for the same thing.
@echo off
setLocal EnableDelayedExpansion
GOTO checkvars
:checkvars
IF "%1"=="" GOTO syntaxerror
IF NOT "%1"=="-f" GOTO syntaxerror
IF %2=="" GOTO syntaxerror
IF NOT EXIST %2 GOTO nofile
IF "%3"=="" GOTO syntaxerror
IF NOT "%3"=="-n" GOTO syntaxerror
IF "%4"=="" GOTO syntaxerror
set param=%4
echo %param%| findstr /xr "[1-9][0-9]* 0" >nul && (
goto proceed
) || (
echo %param% is NOT a valid number
goto syntaxerror
)
:proceed
set limit=%4
set file=%2
set lineCounter=1+%limit%
set filenameCounter=0
set name=
set extension=
for %%a in (%file%) do (
set "name=%%~na"
set "extension=%%~xa"
)
for /f "usebackq tokens=*" %%a in (%file%) do (
if !lineCounter! gtr !limit! (
set splitFile=!name!_part!filenameCounter!!extension!
set /a filenameCounter=!filenameCounter! + 1
set lineCounter=1
echo Created !splitFile!.
)
cls
echo Adding Line !splitFile! - !lineCounter!
echo %%a>> !splitFile!
set /a lineCounter=!lineCounter! + 1
)
echo Done!
goto end
:syntaxerror
Echo Syntax: %0 -f Filename -n "Number Of Rows Per File"
goto end
:nofile
echo %2 does not exist
goto end
:end
I have not tried, but if you know Perl you can use the Parse-Stata-DtaReader module to convert the file for you.
The module has a command-line tool dta2csv, which can "convert Stata 8 and Stata 10 .dta files to csv"
I just installed JupyterLab on top of my Python 3.8/pip enabled Win10 machine, so I ran into these startup problem with windows. If everything is ok (check that you have PATH for Python, eg. C:\Users[Username]\AppData\Local\Programs\Python\Python38-32\Scripts) you simply run:
jupyter-lab.exe
and that's it.
Cheers
You are using incorrect overload. You should use this overload
public static MvcHtmlString ActionLink(
this HtmlHelper htmlHelper,
string linkText,
string actionName,
string controllerName,
Object routeValues,
Object htmlAttributes
)
And the correct code would be
<%= Html.ActionLink("Create New Part", "CreateParts", "PartList", new { parentPartId = 0 }, null)%>
Note that extra parameter at the end.
For the other overloads, visit LinkExtensions.ActionLink Method. As you can see there is no string, string, string, object
overload that you are trying to use.
They appear to be populated by the tz database time zones found here.
Attribute_Brands is a named range.
On any worksheet (tab) press F5 and type Attribute_Brands into the reference box and click on the OK button.
This will take you to the named range.
The data in it can be updated by typing new values into the cells.
The named range can be altered via the 'Insert - Name - Define' menu.
I ran into this problem when running PHPUnit in Elixir/Gulp, and Homestead as my Vagrant enviroment.
In my case I edited the .env file from DB_HOST=localhost
to DB_HOST=192.168.10.10
where 192.168.10.10
is the IP of my Vagrant/Homestead host.
For windows OS :
When you get error 1064 mysql (42000) while trying to execute mysqldump command, exit from current terminal. And execute mysqldump command.
mysql>exit
c:\xampp\mysql\bin>mysqldump -uroot -p --databases [database_name] > name_for_export_db.sql
Here are my favorites:
Dependency:
<dependency>
<groupId>org.apache.any23</groupId>
<artifactId>apache-any23-encoding</artifactId>
<version>1.1</version>
</dependency>
Sample:
public static Charset guessCharset(InputStream is) throws IOException {
return Charset.forName(new TikaEncodingDetector().guessEncoding(is));
}
Dependency:
<dependency>
<groupId>org.codehaus.guessencoding</groupId>
<artifactId>guessencoding</artifactId>
<version>1.4</version>
<type>jar</type>
</dependency>
Sample:
public static Charset guessCharset2(File file) throws IOException {
return CharsetToolkit.guessEncoding(file, 4096, StandardCharsets.UTF_8);
}
All you need to do is:
Build the mainjava class using the class path if any (optional)
javac *.java [ -cp "wb.jar;"]
Create Manifest.txt file with content is:
Main-Class: mainjava
Package the jar file for mainjava class
jar cfm mainjava.jar Manifest.txt *.class
Then you can run this .jar file from cmd with class path (optional) and put arguments for it.
java [-cp "wb.jar;"] mainjava arg0 arg1
HTH.
In C# 5 and earlier, to give auto implemented properties an initial value, you have to do it in a constructor.
Since C# 6.0, you can specify initial value in-line. The syntax is:
public int X { get; set; } = x; // C# 6 or higher
DefaultValueAttribute
is intended to be used by the VS designer (or any other consumer) to specify a default value, not an initial value. (Even if in designed object, initial value is the default value).
At compile time DefaultValueAttribute
will not impact the generated IL and it will not be read to initialize the property to that value (see DefaultValue attribute is not working with my Auto Property).
Example of attributes that impact the IL are ThreadStaticAttribute
, CallerMemberNameAttribute
, ...
The functions with an s
take string parameters. The others take file
streams.
If Elasticsearch cluster is not accessible (e.g. behind firewall), but Kibana is:
Kibana => DevTools => Console:
GET /_cluster/health
I think your question is a bit more general than I originally thought. type()
with one argument returns the type
or class
of the object. So if you have a = 'abc'
and use type(a)
this returns str
because the variable a
is a string. If b = 10
, type(b)
returns int
.
See also python documentation on type().
If you want a comparison you could use: if type(v) == h5py.h5r.Reference
(to check if it is a h5py.h5r.Reference
instance).
But it is recommended that one uses if isinstance(v, h5py.h5r.Reference)
but then also subclasses will evaluate to True
.
If you want to print the class use print v.__class__.__name__
.
More generally: You can compare if two instances have the same class by using type(v) is type(other_v)
or isinstance(v, other_v.__class__)
.
You've probably miss-typed something above that bit of code or created your own class called IPAddress. If you're using the .net one, that function should be available.
Have you tried using System.Net.IPAddress just in case?
System.Net.IPAddress ipaddress = System.Net.IPAddress.Parse("127.0.0.1"); //127.0.0.1 as an example
The docs on Microsoft's site have a complete example which works fine on my machine.
Use pathlib
From Python3.4 onwards.
from pathlib import Path
Path('my_file.mp3').suffix == '.mp3'
You need to use delimiters with regexes in PHP. You can use the often used /
, but PHP lets you use any matching characters, so @
and #
are popular.
If you are interpolating variables inside your regex, be sure to pass the delimiter you chose as the second argument to preg_quote()
.
Fun with function pointers (none of that new-fangled TMP needed):
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <limits.h>
#define MSB(typ) ((sizeof(typ) * CHAR_BIT) - 1)
void done(int x, int y);
void display(int x, int y);
void (*funcs[])(int,int) = {
done,
display
};
void done(int x, int y)
{
exit(0);
}
void display(int x, int limit)
{
printf( "%d\n", x);
funcs[(((unsigned int)(x-limit)) >> MSB(int)) & 1](x+1, limit);
}
int main()
{
display(1, 1000);
return 0;
}
As a side note: I took the prohibition against conditionals to extend to logical and relational operators as well. If you allow logical negation, the recursive call can be simplified to:
funcs[!!(limit-1)](x+1, limit-1);
Since you haven't given table definitions, it's hard to guess. But it looks like you are attempting to modify the foreign key in the child table. AFAIK, this is illegal, you can modify it from the parent, but not the child table.
Consider this example:
CREATE TABLE parent (
parent_id INT NOT NULL,
parent_data int,
PRIMARY KEY (parent_id)
) ENGINE=INNODB;
CREATE TABLE child1 (
child1_id INT,
child1_data INT,
fk_parent_id INT,
INDEX par_ind1 (fk_parent_id),
FOREIGN KEY (fk_parent_id)
REFERENCES parent(parent_id)
ON DELETE CASCADE
ON UPDATE CASCADE
) ENGINE=INNODB;
CREATE TABLE child2 (
child2_id INT,
child2_data INT,
fk_parent_id INT,
INDEX par_ind2 (fk_parent_id),
FOREIGN KEY (fk_parent_id)
REFERENCES parent(parent_id)
ON DELETE CASCADE
ON UPDATE CASCADE
) ENGINE=INNODB;
INSERT INTO parent
(parent_id, parent_data)
VALUES
(1, 11),
(2, 12);
INSERT INTO child1
(child1_id, child1_data, fk_parent_id)
VALUES
(101, 1001, 1),
(102, 1002, 1),
(103, 1003, 1),
(104, 1004, 2),
(105, 1005, 2);
INSERT INTO child2
(child2_id, child2_data, fk_parent_id)
VALUES
(106, 1006, 1),
(107, 1007, 1),
(108, 1008, 1),
(109, 1009, 2),
(110, 1010, 2);
Then this is allowed:
UPDATE parent
SET parent_id = 3 WHERE parent_id = 2;
SELECT * FROM parent;
SELECT * FROM child1;
SELECT * FROM child2;
But this is not, because it modifies the parent fk from the child table:
UPDATE child1
SET fk_parent_id = 4 WHERE fk_parent_id = 1;
It gets an error very similar to your error:
Cannot add or update a child row: a foreign key constraint fails (`db_2_b43a7`.`child1`, CONSTRAINT `child1_ibfk_1` FOREIGN KEY (`fk_parent_id`) REFERENCES `parent` (`parent_id`) ON DELETE CASCADE ON UPDATE CASCADE):
Use Pythons library Clipboard
Its simply used like this:
import clipboard
clipboard.copy("this text is now in the clipboard")
print clipboard.paste()
Here is another solution.
try
{
(void) std::stoi(myString); //cast to void to ignore the return value
//Success! myString contained an integer
}
catch (const std::logic_error &e)
{
//Failure! myString did not contain an integer
}
Shorter way :
import re
cleanString = re.sub('\W+','', string )
If you want spaces between words and numbers substitute '' with ' '
After trying the approaches in other answers without success, I just installed a new bundle from http://developer.android.com/sdk/installing/index.html?pkg=adt and that worked fine.
Do the following:
With these steps, you should't have to reconfigure everything, and you won't need to spend time troubleshooting this BUG on this upgrade from Google Developers.
Good luck! ;-)
You can also get this exception when your application target .NET Framework 4.5 (for example) and you have the following app.config :
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<startup>
<supportedRuntime version="v2.0.50727" />
<supportedRuntime version="v4.0" />
</startup>
</configuration>
When trying to launch the debug of the application you will get the BadImageFormatException.
Removing the line declaring the v2.0 version will clear the error.
I had this issue recently when I tried to change the target platform from an old .NET 2.0 project to .NET 4.5.
In the $routeProvider URI patters, you can specify variable parameters, like so: $routeProvider.when('/page/:pageNumber' ...
, and access it in your controller via $routeParams.
There is a good example at the end of the $route page: http://docs.angularjs.org/api/ng.$route
EDIT (for the edited question):
The routing system is unfortunately very limited - there is a lot of discussion on this topic, and some solutions have been proposed, namely via creating multiple named views, etc.. But right now, the ngView directive serves only ONE view per route, on a one-to-one basis. You can go about this in multiple ways - the simpler one would be to use the view's template as a loader, with a <ng-include src="myTemplateUrl"></ng-include>
tag in it ($scope.myTemplateUrl would be created in the controller).
I use a more complex (but cleaner, for larger and more complicated problems) solution, basically skipping the $route service altogether, that is detailed here:
Ok, I've got it to work.
change
<div id="myModal" class="modal hide fade" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
<h3 id="myModalLabel">Panel</h3>
</div>
<div class="modal-body" style="max-height: 800px">
to
<div id="myModal" class="modal hide fade" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
<h3 id="myModalLabel">Panel</h3>
</div>
<div class="modal-body" style="max-height: 800px">
(remove tabindex="-1" from modal)
Does your DLL project have any actual exports? If there are no exports, the linker will not generate an import library .lib file.
In the non-Express version of VS, the import libray name is specfied in the project settings here:
Configuration Properties/Linker/Advanced/Import Library
I assume it's the same in Express (if it even provides the ability to configure the name).
I have noticed some of the other answers here use a bare clone and then mirror push to the new repository, however this does not work for me and when I open the new repository after that, the files look mixed up and not as I expect.
Here is a solution that definitely works for copying the files, although it does not preserve the original repository's revision history.
git clone
the repository onto your local machine.cd
into the project directory and then run rm -rf .git
to remove all the old git metadata including commit history, etc.git init
.git add . ; git commit -am "Initial commit"
- Of course you can call this commit what you want.git remote add origin https://github.com/user/repo-name
(replace the url with the url to your new repository)git push origin master
.Markdown does not officially support video embeddings but you can embed raw HTML in it. I tested out with GitHub Pages and it works flawlessly.
The snippet looks like:
<iframe width="560" height="315"
src="https://www.youtube.com/embed/MUQfKFzIOeU"
frameborder="0"
allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture"
allowfullscreen></iframe>
PS: You can check out the live preview here
Your code doesn't do what you might think it does. Async methods return immediately after the method begins waiting for the async result. It's insightful to use tracing in order to investigate how the code is actually behaving.
The code below does the following:
static TypeHashes _type = new TypeHashes(typeof(Program));
private void Run()
{
TracerConfig.Reset("debugoutput");
using (Tracer t = new Tracer(_type, "Run"))
{
for (int i = 0; i < 4; i++)
{
DoSomeThingAsync(i);
}
}
Application.Run(); // Start window message pump to prevent termination
}
private async void DoSomeThingAsync(int i)
{
using (Tracer t = new Tracer(_type, "DoSomeThingAsync"))
{
t.Info("Hi in DoSomething {0}",i);
try
{
int result = await Calculate(i);
t.Info("Got async result: {0}", result);
}
catch (ArgumentException ex)
{
t.Error("Got argument exception: {0}", ex);
}
}
}
Task<int> Calculate(int i)
{
var t = new Task<int>(() =>
{
using (Tracer t2 = new Tracer(_type, "Calculate"))
{
if( i % 2 == 0 )
throw new ArgumentException(String.Format("Even argument {0}", i));
return i++;
}
});
t.Start();
return t;
}
When you observe the traces
22:25:12.649 02172/02820 { AsyncTest.Program.Run
22:25:12.656 02172/02820 { AsyncTest.Program.DoSomeThingAsync
22:25:12.657 02172/02820 Information AsyncTest.Program.DoSomeThingAsync Hi in DoSomething 0
22:25:12.658 02172/05220 { AsyncTest.Program.Calculate
22:25:12.659 02172/02820 { AsyncTest.Program.DoSomeThingAsync
22:25:12.659 02172/02820 Information AsyncTest.Program.DoSomeThingAsync Hi in DoSomething 1
22:25:12.660 02172/02756 { AsyncTest.Program.Calculate
22:25:12.662 02172/02820 { AsyncTest.Program.DoSomeThingAsync
22:25:12.662 02172/02820 Information AsyncTest.Program.DoSomeThingAsync Hi in DoSomething 2
22:25:12.662 02172/02820 { AsyncTest.Program.DoSomeThingAsync
22:25:12.662 02172/02820 Information AsyncTest.Program.DoSomeThingAsync Hi in DoSomething 3
22:25:12.664 02172/02756 } AsyncTest.Program.Calculate Duration 4ms
22:25:12.666 02172/02820 } AsyncTest.Program.Run Duration 17ms ---- Run has completed. The async methods are now scheduled on different threads.
22:25:12.667 02172/02756 Information AsyncTest.Program.DoSomeThingAsync Got async result: 1
22:25:12.667 02172/02756 } AsyncTest.Program.DoSomeThingAsync Duration 8ms
22:25:12.667 02172/02756 { AsyncTest.Program.Calculate
22:25:12.665 02172/05220 Exception AsyncTest.Program.Calculate Exception thrown: System.ArgumentException: Even argument 0
at AsyncTest.Program.c__DisplayClassf.Calculateb__e() in C:\Source\AsyncTest\AsyncTest\Program.cs:line 124
at System.Threading.Tasks.Task`1.InvokeFuture(Object futureAsObj)
at System.Threading.Tasks.Task.InnerInvoke()
at System.Threading.Tasks.Task.Execute()
22:25:12.668 02172/02756 Exception AsyncTest.Program.Calculate Exception thrown: System.ArgumentException: Even argument 2
at AsyncTest.Program.c__DisplayClassf.Calculateb__e() in C:\Source\AsyncTest\AsyncTest\Program.cs:line 124
at System.Threading.Tasks.Task`1.InvokeFuture(Object futureAsObj)
at System.Threading.Tasks.Task.InnerInvoke()
at System.Threading.Tasks.Task.Execute()
22:25:12.724 02172/05220 } AsyncTest.Program.Calculate Duration 66ms
22:25:12.724 02172/02756 } AsyncTest.Program.Calculate Duration 57ms
22:25:12.725 02172/05220 Error AsyncTest.Program.DoSomeThingAsync Got argument exception: System.ArgumentException: Even argument 0
Server stack trace:
at AsyncTest.Program.c__DisplayClassf.Calculateb__e() in C:\Source\AsyncTest\AsyncTest\Program.cs:line 124
at System.Threading.Tasks.Task`1.InvokeFuture(Object futureAsObj)
at System.Threading.Tasks.Task.InnerInvoke()
at System.Threading.Tasks.Task.Execute()
Exception rethrown at [0]:
at System.Runtime.CompilerServices.TaskAwaiter.EndAwait()
at System.Runtime.CompilerServices.TaskAwaiter`1.EndAwait()
at AsyncTest.Program.DoSomeThingAsyncd__8.MoveNext() in C:\Source\AsyncTest\AsyncTest\Program.cs:line 106
22:25:12.725 02172/02756 Error AsyncTest.Program.DoSomeThingAsync Got argument exception: System.ArgumentException: Even argument 2
Server stack trace:
at AsyncTest.Program.c__DisplayClassf.Calculateb__e() in C:\Source\AsyncTest\AsyncTest\Program.cs:line 124
at System.Threading.Tasks.Task`1.InvokeFuture(Object futureAsObj)
at System.Threading.Tasks.Task.InnerInvoke()
at System.Threading.Tasks.Task.Execute()
Exception rethrown at [0]:
at System.Runtime.CompilerServices.TaskAwaiter.EndAwait()
at System.Runtime.CompilerServices.TaskAwaiter`1.EndAwait()
at AsyncTest.Program.DoSomeThingAsyncd__8.MoveNext() in C:\Source\AsyncTest\AsyncTest\Program.cs:line 0
22:25:12.726 02172/05220 } AsyncTest.Program.DoSomeThingAsync Duration 70ms
22:25:12.726 02172/02756 } AsyncTest.Program.DoSomeThingAsync Duration 64ms
22:25:12.726 02172/05220 { AsyncTest.Program.Calculate
22:25:12.726 02172/05220 } AsyncTest.Program.Calculate Duration 0ms
22:25:12.726 02172/05220 Information AsyncTest.Program.DoSomeThingAsync Got async result: 3
22:25:12.726 02172/05220 } AsyncTest.Program.DoSomeThingAsync Duration 64ms
You will notice that the Run method completes on thread 2820 while only one child thread has finished (2756). If you put a try/catch around your await method you can "catch" the exception in the usual way although your code is executed on another thread when the calculation task has finished and your contiuation is executed.
The calculation method traces the thrown exception automatically because I did use the ApiChange.Api.dll from the ApiChange tool. Tracing and Reflector helps a lot to understand what is going on. To get rid of threading you can create your own versions of GetAwaiter BeginAwait and EndAwait and wrap not a task but e.g. a Lazy and trace inside your own extension methods. Then you will get much better understanding what the compiler and what the TPL does.
Now you see that there is no way to get in a try/catch your exception back since there is no stack frame left for any exception to propagate from. Your code might be doing something totally different after you did initiate the async operations. It might call Thread.Sleep or even terminate. As long as there is one foreground thread left your application will happily continue to execute asynchronous tasks.
You can handle the exception inside the async method after your asynchronous operation did finish and call back into the UI thread. The recommended way to do this is with TaskScheduler.FromSynchronizationContext. That does only work if you have an UI thread and it is not very busy with other things.
Open cmd and go In Directory where file is saved. Then, For compile, g++ FileName. cpp Or gcc FileName. cpp
For Run, FileName. exe
This Is For Compile & Run Program.
Make sure, gcc compiler installed in PC or Laptop. And also path variable must be set.
Just code, with implementation of GetHashCode
and NULL
validation:
public class Class_reglementComparer : IEqualityComparer<Class_reglement>
{
public bool Equals(Class_reglement x, Class_reglement y)
{
if (x is null || y is null))
return false;
return x.Numf == y.Numf;
}
public int GetHashCode(Class_reglement product)
{
//Check whether the object is null
if (product is null) return 0;
//Get hash code for the Numf field if it is not null.
int hashNumf = product.hashNumf == null ? 0 : product.hashNumf.GetHashCode();
return hashNumf;
}
}
Example: list of Class_reglement distinct by Numf
List<Class_reglement> items = items.Distinct(new Class_reglementComparer());
A todo list example which loops over object by ng-repeat
:
var app = angular.module('toDolistApp', []);_x000D_
app.controller('toDoListCntrl', function() {_x000D_
var self = this;_x000D_
self.toDoListItems = {};// []; //dont use square brackets if keys are string rather than numbers._x000D_
self.doListCounter = 0;_x000D_
_x000D_
self.addToDoList = function() { _x000D_
var newToDoItem = {};_x000D_
newToDoItem.title = self.toDoEntry;_x000D_
newToDoItem.completed = false; _x000D_
_x000D_
var keyIs = "key_" + self.doListCounter++; _x000D_
_x000D_
self.toDoListItems[keyIs] = newToDoItem; _x000D_
self.toDoEntry = ""; //after adding the item make the input box blank._x000D_
};_x000D_
});_x000D_
_x000D_
app.filter('propsCounter', function() {_x000D_
return function(input) {_x000D_
return Object.keys(input).length;_x000D_
}_x000D_
});
_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>_x000D_
<body ng-app="toDolistApp"> _x000D_
<div ng-controller="toDoListCntrl as toDoListCntrlAs">_x000D_
Total Items: {{toDoListCntrlAs.toDoListItems | propsCounter}}<br />_x000D_
Enter todo Item: <input type="text" ng-model="toDoListCntrlAs.toDoEntry"/>_x000D_
<span>{{toDoListCntrlAs.toDoEntry}}</span>_x000D_
<button ng-click="toDoListCntrlAs.addToDoList()">Add Item</button> <br/>_x000D_
<div ng-repeat="(key, prop) in toDoListCntrlAs.toDoListItems"> _x000D_
<span>{{$index+1}} : {{key}} : Title = {{ prop.title}} : Status = {{ prop.completed}} </span>_x000D_
</div> _x000D_
</div> _x000D_
</body>
_x000D_
With angular 6 and rxjs 6 Observable.throw()
, Observable.off()
has been deprecated instead you need to use throwError
ex :
return this.http.get('yoururl')
.pipe(
map(response => response.json()),
catchError((e: any) =>{
//do your processing here
return throwError(e);
}),
);
You can use a background image
.application-title img {_x000D_
width:200px;_x000D_
height:200px;_x000D_
box-sizing:border-box;_x000D_
padding-left: 200px;_x000D_
/*width of the image*/_x000D_
background: url(http://lorempixel.com/200/200/city/2) left top no-repeat;_x000D_
}
_x000D_
<div class="application-title">_x000D_
<img src="http://lorempixel.com/200/200/city/1/">_x000D_
</div><br />_x000D_
Original Image: <br />_x000D_
_x000D_
<img src="http://lorempixel.com/200/200/city/1/">
_x000D_
Like this?
dfTest = pd.DataFrame({
'A':[14.00,90.20,90.95,96.27,91.21],
'B':[103.02,107.26,110.35,114.23,114.68],
'C':['big','small','big','small','small']
})
dfTest[['A','B']] = dfTest[['A','B']].apply(
lambda x: MinMaxScaler().fit_transform(x))
dfTest
A B C
0 0.000000 0.000000 big
1 0.926219 0.363636 small
2 0.935335 0.628645 big
3 1.000000 0.961407 small
4 0.938495 1.000000 small
Related, for mixing querysets from the same model, or for similar fields from a few models, Starting with Django 1.11 a QuerySet.union()
method is also available:
union()
union(*other_qs, all=False)
New in Django 1.11. Uses SQL’s UNION operator to combine the results of two or more QuerySets. For example:
>>> qs1.union(qs2, qs3)
The UNION operator selects only distinct values by default. To allow duplicate values, use the all=True argument.
union(), intersection(), and difference() return model instances of the type of the first QuerySet even if the arguments are QuerySets of other models. Passing different models works as long as the SELECT list is the same in all QuerySets (at least the types, the names don’t matter as long as the types in the same order).
In addition, only LIMIT, OFFSET, and ORDER BY (i.e. slicing and order_by()) are allowed on the resulting QuerySet. Further, databases place restrictions on what operations are allowed in the combined queries. For example, most databases don’t allow LIMIT or OFFSET in the combined queries.
COM interop. Especially IUnknown. It was designed specially for it.
Hope it might help someone instantly.
In Python 2.7: By default, division operator will return integer output.
to get the result in double multiple 1.0 to "dividend or divisor"
100/35 => 2 #(Expected is 2.857142857142857)
(100*1.0)/35 => 2.857142857142857
100/(35*1.0) => 2.857142857142857
In Python 3
// => used for integer output
/ => used for double output
100/35 => 2.857142857142857
100//35 => 2
100.//35 => 2.0 # floating-point result if divsor or dividend real
guard let vc = storyboard?.instantiateViewController(withIdentifier: "add") else { return }
vc.modalPresentationStyle = .fullScreen
present(vc, animated: true, completion: nil)
I think Mr Roberto Ierusalimschy has a very good answer or the question in 'Programming in Lua':
However, the distinguishing feature of interpreted languages is not that they are not compiled, but that any compiler is part of the language runtime and that, therefore, it is possible (and easy) to execute code generated on the fly
Keep in mind you'll also have to give the IUSR account write access for the folder once you upload to your web server.
Personally I recommend not allowing write access to the root folder unless you have a good reason for doing so. And then you need to be careful what sort of files you allow to be saved so you don't inadvertently allow someone to write their own ASPX pages.
The problem with Javascript's MIME type is that there hasn't been a standard for years. Now we've got application/javascript as an official MIME type.
But actually, the MIME type doesn't matter at all, as the browser can determine the type itself. That's why the HTML5 specs state that the type="text/javascript"
is no longer required.
One simple method is to use place
to use an image as a background image. This is the type of thing that place
is really good at doing.
For example:
background_image=tk.PhotoImage(...)
background_label = tk.Label(parent, image=background_image)
background_label.place(x=0, y=0, relwidth=1, relheight=1)
You can then grid
or pack
other widgets in the parent as normal. Just make sure you create the background label first so it has a lower stacking order.
Note: if you are doing this inside a function, make sure you keep a reference to the image, otherwise the image will be destroyed by the garbage collector when the function returns. A common technique is to add a reference as an attribute of the label object:
background_label.image = background_image
I would probably build the link manually, like this:
<a href="<%=Url.Action("Subcategory", "Category", new { categoryID = parent.ID }) %>#section12">link text</a>
You can get it by XMLHttpRequest.responseText
in XMLHttpRequest.onreadystatechange
when XMLHttpRequest.readyState
equals to XMLHttpRequest.DONE
.
Here's an example (not compatible with IE6/7).
var xhr = new XMLHttpRequest();
xhr.onreadystatechange = function() {
if (xhr.readyState == XMLHttpRequest.DONE) {
alert(xhr.responseText);
}
}
xhr.open('GET', 'http://example.com', true);
xhr.send(null);
For better crossbrowser compatibility, not only with IE6/7, but also to cover some browser-specific memory leaks or bugs, and also for less verbosity with firing ajaxical requests, you could use jQuery.
$.get('http://example.com', function(responseText) {
alert(responseText);
});
Note that you've to take the Same origin policy for JavaScript into account when not running at localhost. You may want to consider to create a proxy script at your domain.
Which specific index? If you want 'Add New' to be first on the dropdownlist you can add it though the code like this:
<asp:DropDownList ID="DropDownList1" AppendDataBoundItems="true" runat="server">
<asp:ListItem Text="Add New" Value="0" />
</asp:DropDownList>
If you want to add it at a different index, maybe the last then try:
ListItem lst = new ListItem ( "Add New" , "0" );
DropDownList1.Items.Insert( DropDownList1.Items.Count-1 ,lst);
The problem is in your playerMovement
method. You are creating the string name of your room variables (ID1
, ID2
, ID3
):
letsago = "ID" + str(self.dirDesc.values())
However, what you create is just a str
. It is not the variable. Plus, I do not think it is doing what you think its doing:
>>>str({'a':1}.values())
'dict_values([1])'
If you REALLY needed to find the variable this way, you could use the eval
function:
>>>foo = 'Hello World!'
>>>eval('foo')
'Hello World!'
or the globals
function:
class Foo(object):
def __init__(self):
super(Foo, self).__init__()
def test(self, name):
print(globals()[name])
foo = Foo()
bar = 'Hello World!'
foo.text('bar')
However, instead I would strongly recommend you rethink you class(es). Your userInterface
class is essentially a Room
. It shouldn't handle player movement. This should be within another class, maybe GameManager
or something like that.
Combining the two answers:
First create sql to make all index unusable:
alter session set skip_unusable_indexes = true;
select 'alter index ' || u.index_name || ' unusable;' from user_indexes u;
Do import...
select 'alter index ' || u.index_name || ' rebuild online;' from user_indexes u;
I created a DefaultableDictionary to do exactly what you are asking for!
using System;
using System.Collections;
using System.Collections.Generic;
using System.Collections.ObjectModel;
namespace DefaultableDictionary {
public class DefaultableDictionary<TKey, TValue> : IDictionary<TKey, TValue> {
private readonly IDictionary<TKey, TValue> dictionary;
private readonly TValue defaultValue;
public DefaultableDictionary(IDictionary<TKey, TValue> dictionary, TValue defaultValue) {
this.dictionary = dictionary;
this.defaultValue = defaultValue;
}
public IEnumerator<KeyValuePair<TKey, TValue>> GetEnumerator() {
return dictionary.GetEnumerator();
}
IEnumerator IEnumerable.GetEnumerator() {
return GetEnumerator();
}
public void Add(KeyValuePair<TKey, TValue> item) {
dictionary.Add(item);
}
public void Clear() {
dictionary.Clear();
}
public bool Contains(KeyValuePair<TKey, TValue> item) {
return dictionary.Contains(item);
}
public void CopyTo(KeyValuePair<TKey, TValue>[] array, int arrayIndex) {
dictionary.CopyTo(array, arrayIndex);
}
public bool Remove(KeyValuePair<TKey, TValue> item) {
return dictionary.Remove(item);
}
public int Count {
get { return dictionary.Count; }
}
public bool IsReadOnly {
get { return dictionary.IsReadOnly; }
}
public bool ContainsKey(TKey key) {
return dictionary.ContainsKey(key);
}
public void Add(TKey key, TValue value) {
dictionary.Add(key, value);
}
public bool Remove(TKey key) {
return dictionary.Remove(key);
}
public bool TryGetValue(TKey key, out TValue value) {
if (!dictionary.TryGetValue(key, out value)) {
value = defaultValue;
}
return true;
}
public TValue this[TKey key] {
get
{
try
{
return dictionary[key];
} catch (KeyNotFoundException) {
return defaultValue;
}
}
set { dictionary[key] = value; }
}
public ICollection<TKey> Keys {
get { return dictionary.Keys; }
}
public ICollection<TValue> Values {
get
{
var values = new List<TValue>(dictionary.Values) {
defaultValue
};
return values;
}
}
}
public static class DefaultableDictionaryExtensions {
public static IDictionary<TKey, TValue> WithDefaultValue<TValue, TKey>(this IDictionary<TKey, TValue> dictionary, TValue defaultValue ) {
return new DefaultableDictionary<TKey, TValue>(dictionary, defaultValue);
}
}
}
This project is a simple decorator for an IDictionary object and an extension method to make it easy to use.
The DefaultableDictionary will allow for creating a wrapper around a dictionary that provides a default value when trying to access a key that does not exist or enumerating through all the values in an IDictionary.
Example: var dictionary = new Dictionary<string, int>().WithDefaultValue(5);
Blog post on the usage as well.
I had the same problem, in my case because i forgot this in my NavBar style: overflow: hidden;
if you need to access your variables for an echo statement within your quotes put your variable inside curly brackets
echo "i need to open my lock with its: {$array['key']}";
Simpler with the ANY
construct:
SELECT value_variable = ANY ('{1,2,3}'::int[])
The right operand of ANY
(between parentheses) can either be a set (result of a subquery, for instance) or an array. There are several ways to use it:
Important difference: Array operators (<@
, @>
, &&
et al.) expect array types as operands and support GIN or GiST indices in the standard distribution of PostgreSQL, while the ANY
construct expects an element type as left operand and does not support these indices. Example:
None of this works for NULL
elements. To test for NULL
:
range(x)
returns a list of numbers from 0 to x - 1.
>>> range(1)
[0]
>>> range(2)
[0, 1]
>>> range(3)
[0, 1, 2]
>>> range(4)
[0, 1, 2, 3]
for i in range(x):
executes the body (which is print i
in your first example) once for each element in the list returned by range()
.
i
is used inside the body to refer to the “current” item of the list.
In that case, i
refers to an integer, but it could be of any type, depending on the objet on which you loop.
One extremely ugly way to resolve this is have the user manually type the directory into a text box, and add this back to the front of the file value in the JavaScript.
Messy... but it depends on the level of user you are working with, and gets around the security issue.
<form>
<input type="text" id="file_path" value="C:/" />
<input type="file" id="file_name" />
<input type="button" onclick="ajax_restore();" value="Restore Database" />
</form>
JavaScript
var str = document.getElementById('file_path').value;
var str = str + document.getElementById('file_name').value;
Instead of putting it on top of the file (or even a header file), just wrap the code in question with #pragma warning (push)
, #pragma warning (disable)
and a matching #pragma warning (pop)
, as shown here.
Although there are some other options, including #pramga warning (once)
.
It's so simple.
Just install Microsoft.EntityFrameworkCore.Tools
package from nuget:
Install-Package Microsoft.EntityFrameworkCore.Tools -Version 3.1.5
You can also use this link to install the latest version: Nuget package link
.NET CLI command:
dotnet add package Microsoft.EntityFrameworkCore.Tools
I think you can use CHECK constraint - it is exactly what it was invented for.
ALTER TABLE someTable
ADD CONSTRAINT someField_check CHECK (ISNUMERIC(someField) = 1) ;
My previous answer (also right by may be a bit overkill):
I think the right way is to use INSTEAD OF trigger to prevent the wrong data from being inserted (rather than deleting it post-factum)
you will get the time without specifying the date format. convert the string to date using Date
object
var myDate = new Date('Mon 03-Jul-2017, 06:00 PM');
working solution:
var myDate= new Date('Mon 03-Jul-2017, 06:00 PM');_x000D_
console.log(moment(myDate).format('HH:mm')); // 24 hour format _x000D_
console.log(moment(myDate).format('hh:mm'));_x000D_
console.log(moment(myDate).format('hh:mm A'));
_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.18.1/moment.min.js"></script>
_x000D_
You can start Eclipse in clean mode from the command line:
eclipse -clean
It is caused by a lack of precision with doubles / decimals (i.e. - the function will not always give the result you expect).
See the following link: MSDN on Math.Round
Here is the relevant quote:
Because of the loss of precision that can result from representing decimal values as floating-point numbers or performing arithmetic operations on floating-point values, in some cases the Round(Double, Int32, MidpointRounding) method may not appear to round midpoint values as specified by the mode parameter.This is illustrated in the following example, where 2.135 is rounded to 2.13 instead of 2.14.This occurs because internally the method multiplies value by 10digits, and the multiplication operation in this case suffers from a loss of precision.
You can get maximum column value and increment it:
InnoDB uses the following algorithm to initialize the auto-increment counter for a table t that contains an AUTO_INCREMENT column named ai_col: After a server startup, for the first insert into a table t, InnoDB executes the equivalent of this statement:
SELECT MAX(ai_col) FROM t FOR UPDATE;
InnoDB increments by one the value retrieved by the statement and assigns it to the column and to the auto-increment counter for the table. If the table is empty, InnoDB uses the value 1.
Also you can use SHOW TABLE STATUS and its "Auto_increment" value.
Here is a very useful step by step guideline for insert multi rows in Oracle:
https://livesql.oracle.com/apex/livesql/file/content_BM1LJQ87M5CNIOKPOWPV6ZGR3.html
The last step:
INSERT ALL
/* Everyone is a person, so insert all rows into people */
WHEN 1=1 THEN
INTO people (person_id, given_name, family_name, title)
VALUES (id, given_name, family_name, title)
/* Only people with an admission date are patients */
WHEN admission_date IS NOT NULL THEN
INTO patients (patient_id, last_admission_date)
VALUES (id, admission_date)
/* Only people with a hired date are staff */
WHEN hired_date IS NOT NULL THEN
INTO staff (staff_id, hired_date)
VALUES (id, hired_date)
WITH names AS (
SELECT 4 id, 'Ruth' given_name, 'Fox' family_name, 'Mrs' title,
NULL hired_date, DATE'2009-12-31' admission_date
FROM dual UNION ALL
SELECT 5 id, 'Isabelle' given_name, 'Squirrel' family_name, 'Miss' title ,
NULL hired_date, DATE'2014-01-01' admission_date
FROM dual UNION ALL
SELECT 6 id, 'Justin' given_name, 'Frog' family_name, 'Master' title,
NULL hired_date, DATE'2015-04-22' admission_date
FROM dual UNION ALL
SELECT 7 id, 'Lisa' given_name, 'Owl' family_name, 'Dr' title,
DATE'2015-01-01' hired_date, NULL admission_date
FROM dual
)
SELECT * FROM names
As Uriel says, it is meant for a method in an abstract class that should be implemented in child class, but can be used to indicate a TODO as well.
There is an alternative for the first use case: Abstract Base Classes. Those help creating abstract classes.
Here's a Python 3 example:
class C(abc.ABC):
@abc.abstractmethod
def my_abstract_method(self, ...):
...
When instantiating C
, you'll get an error because my_abstract_method
is abstract. You need to implement it in a child class.
TypeError: Can't instantiate abstract class C with abstract methods my_abstract_method
Subclass C
and implement my_abstract_method
.
class D(C):
def my_abstract_method(self, ...):
...
Now you can instantiate D
.
C.my_abstract_method
does not have to be empty. It can be called from D
using super()
.
An advantage of this over NotImplementedError
is that you get an explicit Exception
at instantiation time, not at method call time.
It's still valid to use IE=edge,chrome=1.
But, since the chrome frame project has been wound down the chrome=1 part is redundant for browsers that don't already have the chrome frame plug in installed.
I use the following for correctness nowadays
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
As an alternative, you can use the environment variables LIBRARY_PATH
and CPLUS_INCLUDE_PATH
, which respectively indicate where to look for libraries and where to look for headers (CPATH
will also do the job), without specifying the -L and -I options.
Edit:
CPATH
includes header with -I
and CPLUS_INCLUDE_PATH
with -isystem
.
Assuming i understand your question.
You can get the selected row using the DataGridView.SelectedRows
Collection. If your DataGridView allows only one selected, have a look at my sample.
DataGridView.SelectedRows Gets the collection of rows selected by the user.
if (dataGridView1.SelectedRows.Count != 0)
{
DataGridViewRow row = this.dataGridView1.SelectedRows[0];
row.Cells["ColumnName"].Value
}
Why not pass an object to v-bind:class to dynamically toggle the class:
<div v-bind:class="{ disabled: order.cancelled_at }"></div>
This is what is recommended by the Vue docs.
I just did this for fun
>>> s = 'a,b,c,d'
>>> [item[::-1] for item in s[::-1].split(',', 1)][::-1]
['a,b,c', 'd']
Caution: Refer to the first comment in below where this answer can go wrong.
Use aggregation function and $project
to get specific object field in document
db.getCollection('geolocations').aggregate([ { $project : { geolocation : 1} } ])
result:
{
"_id" : ObjectId("5e3ee15968879c0d5942464b"),
"geolocation" : [
{
"_id" : ObjectId("5e3ee3ee68879c0d5942465e"),
"latitude" : 12.9718313,
"longitude" : 77.593551,
"country" : "India",
"city" : "Chennai",
"zipcode" : "560001",
"streetName" : "Sidney Road",
"countryCode" : "in",
"ip" : "116.75.115.248",
"date" : ISODate("2020-02-08T16:38:06.584Z")
}
]
}
Type "^". And get a good "Vi" tutorial :)
install TypeScript :
npm install typescript
add tsc script to package.json:
"scripts": {
"tsc": "tsc"
},
run this:
npx tsc --init
this wasted me a day or two. like why dont anybody say on tutorials that the command composer is not to be used without actually linking and stuff... I mean everyone is writing composer command like its the next step when we are not all 5 years experienced users to know these details.
cp composer.phar /usr/local/bin/composer
did it for me on ubuntu after getting stuck for 2 days
Use <iomanip>
's std::hex
. If you print, just send it to std::cout
, if not, then use std::stringstream
std::stringstream stream;
stream << std::hex << your_int;
std::string result( stream.str() );
You can prepend the first <<
with << "0x"
or whatever you like if you wish.
Other manips of interest are std::oct
(octal) and std::dec
(back to decimal).
One problem you may encounter is the fact that this produces the exact amount of digits needed to represent it. You may use setfill
and setw
this to circumvent the problem:
stream << std::setfill ('0') << std::setw(sizeof(your_type)*2)
<< std::hex << your_int;
So finally, I'd suggest such a function:
template< typename T >
std::string int_to_hex( T i )
{
std::stringstream stream;
stream << "0x"
<< std::setfill ('0') << std::setw(sizeof(T)*2)
<< std::hex << i;
return stream.str();
}
I got this issue in opening JMeter 4.0. I fixed as below.
I have JRE 7 installed in Program Files (x86) folder and JDK 8 installed in Program files folder. So I just uninstalled JRE7 from machine. I just kept latest version of JDK. It fixed the problem.
In case you are running a code not written in your computer, that runs in a computer used by your work peer, but not in yours, check the web.config. Maybe there is your colleague's name as userPrincipalName at some place that should be in blank. That happens automatically when we create a service reference to the project in VS.
This can be done in following five steps:
This gem does these things for you automatically even the installation of required tools
One simple way can be the use of assign()
function that is pre-defined in vector
class.
e.g.
array[5]={1,2,3,4,5};
vector<int> v;
v.assign(array, array+5); // 5 is size of array.
a = np.arange(18).reshape(9,2)
b = a.reshape(3,3,2).swapaxes(0,2)
# a:
array([[ 0, 1],
[ 2, 3],
[ 4, 5],
[ 6, 7],
[ 8, 9],
[10, 11],
[12, 13],
[14, 15],
[16, 17]])
# b:
array([[[ 0, 6, 12],
[ 2, 8, 14],
[ 4, 10, 16]],
[[ 1, 7, 13],
[ 3, 9, 15],
[ 5, 11, 17]]])
Use the following query:
SELECT * FROM SAMPLE_TABLE ORDER BY ROWID ASC LIMIT 1
Note: Sqlite's row id references are detailed here.
This problem had been bugging me for years the only workaround for me was to ask our networks team to make exceptions on our firewall so that certain URL requests didn't need to be authenticated on the proxy which is not ideal.
Recently I upgraded the project to .NET 4 from 3.5 and the code just started working using the default credentials for the proxy, no hardcoding of credentials etc.
request.Proxy.Credentials = CredentialCache.DefaultCredentials;
From MSDN, Automatically Wrap Text in Label:
using System;
using System.Text;
using System.Drawing;
using System.Windows.Forms;
public class GrowLabel : Label {
private bool mGrowing;
public GrowLabel() {
this.AutoSize = false;
}
private void resizeLabel() {
if (mGrowing)
return;
try {
mGrowing = true;
Size sz = new Size(this.Width, Int32.MaxValue);
sz = TextRenderer.MeasureText(this.Text, this.Font, sz, TextFormatFlags.WordBreak);
this.Height = sz.Height;
}
finally {
mGrowing = false;
}
}
protected override void OnTextChanged(EventArgs e) {
base.OnTextChanged(e);
resizeLabel();
}
protected override void OnFontChanged(EventArgs e) {
base.OnFontChanged(e);
resizeLabel();
}
protected override void OnSizeChanged(EventArgs e) {
base.OnSizeChanged(e);
resizeLabel();
}
}
Long compile times can be annoying. With C++ you can have very long compile times (which means, of course, more time for Stack Overflow!).
You can also use shift for individual variables in most cases:
$var1 = shift;
This is a topic in which you should research further as Perl has a number of interesting ways of accessing outside information inside your sub routine.
I had the same issue after upgrading to macOS Catalina. This didn't work for me:
xcode-select --install
Downloading and installing Command Line Tools for Xcode 12 did it!
Swift 3 with a Date
extension
extension Date {
func string(with format: String) -> String {
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = format
return dateFormatter.string(from: self)
}
}
Then you can use it like so:
let date = Date()
date.string(with: "MMM dd, yyyy")
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/".
Take a look at the Cookie Plugin for jQuery.
With a function like this:
function toObject(arr) {
var rv = {};
for (var i = 0; i < arr.length; ++i)
rv[i] = arr[i];
return rv;
}
Your array already is more-or-less just an object, but arrays do have some "interesting" and special behavior with respect to integer-named properties. The above will give you a plain object.
edit oh also you might want to account for "holes" in the array:
function toObject(arr) {
var rv = {};
for (var i = 0; i < arr.length; ++i)
if (arr[i] !== undefined) rv[i] = arr[i];
return rv;
}
In modern JavaScript runtimes, you can use the .reduce()
method:
var obj = arr.reduce(function(acc, cur, i) {
acc[i] = cur;
return acc;
}, {});
That one also avoids "holes" in the array, because that's how .reduce()
works.
If you are using Swift, remember that println
will only print to the debug log (which appears in xCode's debug area). If you want to print to system.log, you have to use NSLog
as in the old days.
Then you can view the simulator log via its menu, Debug > Open System Log... (cmd + /)
import time
start_time = time.time()
#recursive solution
def fib(x, y, upperLimit):
return [x] + fib(y, (x+y), upperLimit) if x < upperLimit else [x]
#To test :
print(fib(0,1,40000000000000))
print("run time: " + str(time.time() - start_time))
Results
[0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377, 610, 987, 1597, 2584, 4181, 6765, 10946, 17711, 28657, 46368, 75025, 121393, 196418, 317811, 514229, 832040, 1346269, 2178309, 3524578, 5702887, 9227465, 14930352, 24157817, 39088169, 63245986, 102334155, 165580141, 267914296, 433494437, 701408733, 1134903170, 1836311903, 2971215073, 4807526976, 7778742049, 12586269025, 20365011074, 32951280099, 53316291173, 86267571272, 139583862445, 225851433717, 365435296162, 591286729879, 956722026041, 1548008755920, 2504730781961, 4052739537881, 6557470319842, 10610209857723, 17167680177565, 27777890035288, 44945570212853]
run time: 0.04298138618469238
for bootstrap 3 I have the following code in my navbar component
/**
* Navbar styling.
*/
@mobile: ~"screen and (max-width: @{screen-xs-max})";
@tablet: ~"screen and (min-width: @{screen-sm-min})";
@normal: ~"screen and (min-width: @{screen-md-min})";
@wide: ~"screen and (min-width: @{screen-lg-min})";
@grid-breakpoint: ~"screen and (min-width: @{grid-float-breakpoint})";
then you can use something like
@media wide { selector: style }
This uses whatever value you have the variables set to.
Escaping allows you to use any arbitrary string as property or variable value. Anything inside ~"anything" or ~'anything' is used as is with no changes except interpolation.
Demo:
$exePath = $env:NGINX_HOME + '/nginx.exe'
$myArgs = $args.Clone()
$myArgs += '-p'
$myArgs += $env:NGINX_HOME
& $exepath $myArgs
Assuming timestamp is the index of the data frame, you can just do the following:
hours = sales.index.hour
If you want to add that to your sales data frame, just do:
import pandas as pd
pd.concat([sales, pd.DataFrame(hours, index=sales.index)], axis = 1)
Edit: If you have several columns of datetime objects, it's the same process. If you have a column ['date'] in your data frame, and assuming that 'date' has datetime values, you can access the hour from the 'date' as:
hours = sales['date'].hour
Edit2:
If you want to adjust a column in your data frame you have to include dt
:
sales['datehour'] = sales['date'].dt.hour
answer is;
select date_part('year', timestamp '2001-02-16 20:38:40') as year,
date_part('month', timestamp '2001-02-16 20:38:40') as month,
date_part('day', timestamp '2001-02-16 20:38:40') as day,
date_part('hour', timestamp '2001-02-16 20:38:40') as hour,
date_part('minute', timestamp '2001-02-16 20:38:40') as minute
Try below piece of code.
this.dataGridView1.RefreshEdit();