You can create an iterator in Python 3.x or a list in Python 2.x by using:
filter(r.match, list)
To convert the Python 3.x iterator to a list, simply cast it; list(filter(..))
.
Browser parses your html from top down, your script runs before body is loaded. To fix put script after body.
<html>
<head>
<title> Javascript Tests </title>
</head>
<body>
</body>
<script type="text/javascript">
var mySpan = document.createElement("span");
mySpan.innerHTML = "This is my span!";
mySpan.style.color = "red";
document.body.appendChild(mySpan);
alert("Why does the span change after this alert? Not before?");
</script>
</html>
If you are using Query builder then you may use a blow
DB::table(Newsletter Subscription)
->select('*')
->whereIn('id', $send_users_list)
->get()
If you are working with Eloquent then you can use as below
$sendUsersList = Newsletter Subscription:: select ('*')
->whereIn('id', $send_users_list)
->get();
NOTE: This is a recent answer based on recent SQL server, .NET stack updates
latitute and longitude from google Maps should be stored as Point(note capital P) data in SQL server under geography data type.
Assuming your current data is stored in a table Sample
as varchar under columns lat
and lon
, below query will help you convert to geography
alter table Sample add latlong geography
go
update Sample set latlong= geography::Point(lat,lon,4326)
go
PS: Next time when you do a select on this table with geography data, apart from Results and Messages tab, you will also get Spatial results tab like below for visualization
Look at easiest example to create popup using css and javascript.
See the full example at this link http://makecodeeasy.blogspot.in/2012/07/popup-in-java-script-and-css.html
This works fine with me
List<string> myList = new List<string>();
myList.Add(string.Format("{0}|{1}","hello","1") ;
label:myList[0].split('|')[0]
val: myList[0].split('|')[1]
It will give you point of hook to put some code that you wish to be executed on web application deploy time
I've investigated A LOT on how to properly manage 404s in MVC (specifically MVC3), and this, IMHO is the best solution I've come up with:
In global.asax:
public class MvcApplication : HttpApplication
{
protected void Application_EndRequest()
{
if (Context.Response.StatusCode == 404)
{
Response.Clear();
var rd = new RouteData();
rd.DataTokens["area"] = "AreaName"; // In case controller is in another area
rd.Values["controller"] = "Errors";
rd.Values["action"] = "NotFound";
IController c = new ErrorsController();
c.Execute(new RequestContext(new HttpContextWrapper(Context), rd));
}
}
}
ErrorsController:
public sealed class ErrorsController : Controller
{
public ActionResult NotFound()
{
ActionResult result;
object model = Request.Url.PathAndQuery;
if (!Request.IsAjaxRequest())
result = View(model);
else
result = PartialView("_NotFound", model);
return result;
}
}
Edit:
If you're using IoC (e.g. AutoFac), you should create your controller using:
var rc = new RequestContext(new HttpContextWrapper(Context), rd);
var c = ControllerBuilder.Current.GetControllerFactory().CreateController(rc, "Errors");
c.Execute(rc);
Instead of
IController c = new ErrorsController();
c.Execute(new RequestContext(new HttpContextWrapper(Context), rd));
(Optional)
Explanation:
There are 6 scenarios that I can think of where an ASP.NET MVC3 apps can generate 404s.
Generated by ASP.NET:
Generated by ASP.NET MVC:
Scenario 2: URL matches a route, but specifies a controller that doesn't exist.
Scenario 3: URL matches a route, but specifies an action that doesn't exist.
Manually generated:
Scenario 4: An action returns an HttpNotFoundResult by using the method HttpNotFound().
Scenario 5: An action throws an HttpException with the status code 404.
Scenario 6: An actions manually modifies the Response.StatusCode property to 404.
Objectives
(A) Show a custom 404 error page to the user.
(B) Maintain the 404 status code on the client response (specially important for SEO).
(C) Send the response directly, without involving a 302 redirection.
Solution Attempt: Custom Errors
<system.web>
<customErrors mode="On">
<error statusCode="404" redirect="~/Errors/NotFound"/>
</customErrors>
</system.web>
Problems with this solution:
Solution Attempt: HTTP Errors
<system.webServer>
<httpErrors errorMode="Custom">
<remove statusCode="404"/>
<error statusCode="404" path="App/Errors/NotFound" responseMode="ExecuteURL"/>
</httpErrors>
</system.webServer>
Problems with this solution:
Solution Attempt: HTTP Errors with Replace
<system.webServer>
<httpErrors errorMode="Custom" existingResponse="Replace">
<remove statusCode="404"/>
<error statusCode="404" path="App/Errors/NotFound" responseMode="ExecuteURL"/>
</httpErrors>
</system.webServer>
Problems with this solution:
Solution Attempt customErrors and HTTP Errors
<system.web>
<customErrors mode="On">
<error statusCode="404" redirect="~/Errors/NotFound"/>
</customError>
</system.web>
and
<system.webServer>
<httpErrors errorMode="Custom">
<remove statusCode="404"/>
<error statusCode="404" path="App/Errors/NotFound" responseMode="ExecuteURL"/>
</httpErrors>
</system.webServer>
Problems with this solution:
People that have troubled with this before even tried to create their own libraries (see http://aboutcode.net/2011/02/26/handling-not-found-with-asp-net-mvc3.html). But the previous solution seems to cover all the scenarios without the complexity of using an external library.
from datetime import datetime, timedelta
yesterday = datetime.now() - timedelta(days=1)
yesterday.strftime('%m%d%y')
This could work but I don't know if it's convenient for your case:
@ViewChildren('contentPlaceholder', {read: ViewContainerRef}) viewContainerRefs: QueryList;
ngAfterViewInit() {
this.viewContainerRefs.changes.subscribe(item => {
if(this.viewContainerRefs.toArray().length) {
// shown
}
})
}
To know number of selected elements use
$("select option:selected").length
To Get the value of all selected elements use
var str = "";
$("select option:selected").each(function () {
str += $(this).text() + " ";
});
Usually you would be interested in also having some structure to your data in the receiving end:
json_encode($result)
This will preserve the array keys as well.
Do remember that json_encode only works on utf8 -encoded data.
Yes, the function is querySelectorAll
(or querySelector
for a single element), which allows you to use CSS selectors to find elements.
document.querySelectorAll('[property]'); // All with attribute named "property"
document.querySelectorAll('[property="value"]'); // All with "property" set to "value" exactly.
(Complete list of attribute selectors on MDN.)
This finds all elements with the attribute property. It would be better to specify a tag name if possible:
document.querySelectorAll('span[property]');
You can work around this if necessary by looping through all the elements on the page to see whether they have the attribute set:
var withProperty = [],
els = document.getElementsByTagName('span'), // or '*' for all types of element
i = 0;
for (i = 0; i < els.length; i++) {
if (els[i].hasAttribute('property')) {
withProperty.push(els[i]);
}
}
Libraries such as jQuery handle this for you; it's probably a good idea to let them do the heavy lifting.
For anyone dealing with ancient browsers, note that querySelectorAll
was introduced to Internet Explorer in v8 (2009) and fully supported in IE9. All modern browsers support it.
Xcode 10 Swift 4.2
To show Push Notification when your app is in the foreground -
Step 1 : add delegate UNUserNotificationCenterDelegate in AppDelegate class.
class AppDelegate: UIResponder, UIApplicationDelegate, UNUserNotificationCenterDelegate {
Step 2 : Set the UNUserNotificationCenter delegate
let notificationCenter = UNUserNotificationCenter.current()
notificationCenter.delegate = self
Step 3 : This step will allow your app to show Push Notification even when your app is in foreground
func userNotificationCenter(_ center: UNUserNotificationCenter,
willPresent notification: UNNotification,
withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
completionHandler([.alert, .sound])
}
Step 4 : This step is optional. Check if your app is in the foreground and if it is in foreground then show Local PushNotification.
func application(_ application: UIApplication,didReceiveRemoteNotification userInfo: [AnyHashable: Any],fetchCompletionHandler completionHandler:@escaping (UIBackgroundFetchResult) -> Void) {
let state : UIApplicationState = application.applicationState
if (state == .inactive || state == .background) {
// go to screen relevant to Notification content
print("background")
} else {
// App is in UIApplicationStateActive (running in foreground)
print("foreground")
showLocalNotification()
}
}
Local Notification function -
fileprivate func showLocalNotification() {
//creating the notification content
let content = UNMutableNotificationContent()
//adding title, subtitle, body and badge
content.title = "App Update"
//content.subtitle = "local notification"
content.body = "New version of app update is available."
//content.badge = 1
content.sound = UNNotificationSound.default()
//getting the notification trigger
//it will be called after 5 seconds
let trigger = UNTimeIntervalNotificationTrigger(timeInterval: 1, repeats: false)
//getting the notification request
let request = UNNotificationRequest(identifier: "SimplifiedIOSNotification", content: content, trigger: trigger)
//adding the notification to notification center
notificationCenter.add(request, withCompletionHandler: nil)
}
Nested classes are just like regular classes, but:
Some examples:
Assume you want to have a class SomeSpecificCollection
which would aggregate objects of class Element
. You can then either:
declare two classes: SomeSpecificCollection
and Element
- bad, because the name "Element" is general enough in order to cause a possible name clash
introduce a namespace someSpecificCollection
and declare classes someSpecificCollection::Collection
and someSpecificCollection::Element
. No risk of name clash, but can it get any more verbose?
declare two global classes SomeSpecificCollection
and SomeSpecificCollectionElement
- which has minor drawbacks, but is probably OK.
declare global class SomeSpecificCollection
and class Element
as its nested class. Then:
SomeSpecificCollection
you refer to just Element
, and everywhere else as SomeSpecificCollection::Element
- which looks +- the same as 3., but more clearSomeSpecificCollection
is also a class.In my opinion, the last variant is definitely the most intuitive and hence best design.
Let me stress - It's not a big difference from making two global classes with more verbose names. It just a tiny little detail, but imho it makes the code more clear.
This is especially useful for introducing typedefs or enums. I'll just post a code example here:
class Product {
public:
enum ProductType {
FANCY, AWESOME, USEFUL
};
enum ProductBoxType {
BOX, BAG, CRATE
};
Product(ProductType t, ProductBoxType b, String name);
// the rest of the class: fields, methods
};
One then will call:
Product p(Product::FANCY, Product::BOX);
But when looking at code completion proposals for Product::
, one will often get all the possible enum values (BOX, FANCY, CRATE) listed and it's easy to make a mistake here (C++0x's strongly typed enums kind of solve that, but never mind).
But if you introduce additional scope for those enums using nested classes, things could look like:
class Product {
public:
struct ProductType {
enum Enum { FANCY, AWESOME, USEFUL };
};
struct ProductBoxType {
enum Enum { BOX, BAG, CRATE };
};
Product(ProductType::Enum t, ProductBoxType::Enum b, String name);
// the rest of the class: fields, methods
};
Then the call looks like:
Product p(Product::ProductType::FANCY, Product::ProductBoxType::BOX);
Then by typing Product::ProductType::
in an IDE, one will get only the enums from the desired scope suggested. This also reduces the risk of making a mistake.
Of course this may not be needed for small classes, but if one has a lot of enums, then it makes things easier for the client programmers.
In the same way, you could "organise" a big bunch of typedefs in a template, if you ever had the need to. It's a useful pattern sometimes.
The PIMPL (short for Pointer to IMPLementation) is an idiom useful to remove the implementation details of a class from the header. This reduces the need of recompiling classes depending on the class' header whenever the "implementation" part of the header changes.
It's usually implemented using a nested class:
X.h:
class X {
public:
X();
virtual ~X();
void publicInterface();
void publicInterface2();
private:
struct Impl;
std::unique_ptr<Impl> impl;
}
X.cpp:
#include "X.h"
#include <windows.h>
struct X::Impl {
HWND hWnd; // this field is a part of the class, but no need to include windows.h in header
// all private fields, methods go here
void privateMethod(HWND wnd);
void privateMethod();
};
X::X() : impl(new Impl()) {
// ...
}
// and the rest of definitions go here
This is particularly useful if the full class definition needs the definition of types from some external library which has a heavy or just ugly header file (take WinAPI). If you use PIMPL, then you can enclose any WinAPI-specific functionality only in .cpp
and never include it in .h
.
Did you override the run() method? If you overrided __init__
, did you make sure to call the base threading.Thread.__init__()
?
After starting the two threads, does the main thread continue to do work indefinitely/block/join on the child threads so that main thread execution does not end before the child threads complete their tasks?
And finally, are you getting any unhandled exceptions?
In general you would do this with the stat module. But the command module has the creates
option which makes this very simple:
- name: touch file
command: touch /etc/file.txt
args:
creates: /etc/file.txt
I guess your touch command is just an example? Best practice would be to not check anything at all and let ansible do its job - with the correct module. So if you want to ensure the file exists you would use the file module:
- name: make sure file exists
file:
path: /etc/file.txt
state: touch
Add bottom:100%
to your #menu:hover ul li:hover ul
rule
#menu:hover ul li:hover ul {
position: absolute;
margin-top: 1px;
font: 10px;
bottom: 100%; /* added this attribute */
}
Or better yet to prevent the submenus from having the same effect, just add this rule
#menu>ul>li:hover>ul {
bottom:100%;
}
source: http://jsfiddle.net/W5FWW/4/
And to get back the border you can add the following attribute
#menu>ul>li:hover>ul {
bottom:100%;
border-bottom: 1px solid transparent
}
I'm having the same problem with Wampserver. It’s worked for me:
You must change this file: "C:\wamp\bin\mysql[mysql_version]\my.ini" For example: "C:\wamp\bin\mysql[mysql5.6.12]\my.ini"
And change default port 3306 to 80. (Lines 20 & 27, in both)
port = 3306 To port = 80
I hope this is helpful.
Codeigniter has a function that retrieves your base path which is:
FCPATH and BASEPATH i recommand use FCPATH.
for your base url use:
<?=base_url()?>
if your php short tag is off
<?php echo base_url(); ?>
for example: if you want to link you css files which is in your base path
<script src='<?=base_url()?>js/jquery.js' type='text/javascript' />
At least some versions of SQL (Oracle, Informix, DB2, ISO Standard) support:
WHERE MOD(value, 2) = 1
MySQL supports '%' as the modulus operator:
WHERE value % 2 = 1
zeros=[0]*4
you can replace 4
in the above example with whatever number you want.
If your $VARIABLE
is a string containing spaces or other special characters, and single square brackets are used (which is a shortcut for the test
command), then the string may be split out into multiple words. Each of these is treated as a separate argument.
So that one variable is split out into many arguments:
VARIABLE=$(/some/command);
# returns "hello world"
if [ $VARIABLE == 0 ]; then
# fails as if you wrote:
# if [ hello world == 0 ]
fi
The same will be true for any function call that puts down a string containing spaces or other special characters.
Wrap the variable output in double quotes, forcing it to stay as one string (therefore one argument). For example,
VARIABLE=$(/some/command);
if [ "$VARIABLE" == 0 ]; then
# some action
fi
Simple as that. But skip to "Also beware..." below if you also can't guarantee your variable won't be an empty string, or a string that contains nothing but whitespace.
Or, an alternate fix is to use double square brackets (which is a shortcut for the new test
command).
This exists only in bash (and apparently korn and zsh) however, and so may not be compatible with default shells called by /bin/sh
etc.
This means on some systems, it might work from the console but not when called elsewhere, like from cron
, depending on how everything is configured.
It would look like this:
VARIABLE=$(/some/command);
if [[ $VARIABLE == 0 ]]; then
# some action
fi
If your command contains double square brackets like this and you get errors in logs but it works from the console, try swapping out the [[
for an alternative suggested here, or, ensure that whatever runs your script uses a shell that supports [[
aka new test
.
[: unary operator expected
errorIf you're seeing the "too many arguments" error, chances are you're getting a string from a function with unpredictable output. If it's also possible to get an empty string (or all whitespace string), this would be treated as zero arguments even with the above "quick fix", and would fail with [: unary operator expected
It's the same 'gotcha' if you're used to other languages - you don't expect the contents of a variable to be effectively printed into the code like this before it is evaluated.
Here's an example that prevents both the [: too many arguments
and the [: unary operator expected
errors: replacing the output with a default value if it is empty (in this example, 0
), with double quotes wrapped around the whole thing:
VARIABLE=$(/some/command);
if [ "${VARIABLE:-0}" == 0 ]; then
# some action
fi
(here, the action will happen if $VARIABLE is 0, or empty. Naturally, you should change the 0 (the default value) to a different default value if different behaviour is wanted)
Final note: Since [
is a shortcut for test
, all the above is also true for the error test: too many arguments
(and also test: unary operator expected
)
Indeed, use onclick="this.select();"
but remember not to combine it with disabled="disabled"
- it will not work then and you will need to manually select or multi-click to select, still. If you wish to lock the content value to be selected, combine with the attribute readonly
.
Another way is to use the object tag. This works on Chrome, IE, Firefox, Safari and Opera.
<object data="html/stuff_to_include.html">
Your browser doesn’t support the object tag.
</object>
more info at http://www.w3schools.com/tags/tag_object.asp
Ok, I don't normally answer my own questions but after a bit of tinkering, I have figured out definitively how Oracle stores the result of a DATE subtraction.
When you subtract 2 dates, the value is not a NUMBER datatype (as the Oracle 11.2 SQL Reference manual would have you believe). The internal datatype number of a DATE subtraction is 14, which is a non-documented internal datatype (NUMBER is internal datatype number 2). However, it is actually stored as 2 separate two's complement signed numbers, with the first 4 bytes used to represent the number of days and the last 4 bytes used to represent the number of seconds.
An example of a DATE subtraction resulting in a positive integer difference:
select date '2009-08-07' - date '2008-08-08' from dual;
Results in:
DATE'2009-08-07'-DATE'2008-08-08'
---------------------------------
364
select dump(date '2009-08-07' - date '2008-08-08') from dual;
DUMP(DATE'2009-08-07'-DATE'2008
-------------------------------
Typ=14 Len=8: 108,1,0,0,0,0,0,0
Recall that the result is represented as a 2 seperate two's complement signed 4 byte numbers. Since there are no decimals in this case (364 days and 0 hours exactly), the last 4 bytes are all 0s and can be ignored. For the first 4 bytes, because my CPU has a little-endian architecture, the bytes are reversed and should be read as 1,108 or 0x16c, which is decimal 364.
An example of a DATE subtraction resulting in a negative integer difference:
select date '1000-08-07' - date '2008-08-08' from dual;
Results in:
DATE'1000-08-07'-DATE'2008-08-08'
---------------------------------
-368160
select dump(date '1000-08-07' - date '2008-08-08') from dual;
DUMP(DATE'1000-08-07'-DATE'2008-08-0
------------------------------------
Typ=14 Len=8: 224,97,250,255,0,0,0,0
Again, since I am using a little-endian machine, the bytes are reversed and should be read as 255,250,97,224 which corresponds to 11111111 11111010 01100001 11011111. Now since this is in two's complement signed binary numeral encoding, we know that the number is negative because the leftmost binary digit is a 1. To convert this into a decimal number we would have to reverse the 2's complement (subtract 1 then do the one's complement) resulting in: 00000000 00000101 10011110 00100000 which equals -368160 as suspected.
An example of a DATE subtraction resulting in a decimal difference:
select to_date('08/AUG/2004 14:00:00', 'DD/MON/YYYY HH24:MI:SS'
- to_date('08/AUG/2004 8:00:00', 'DD/MON/YYYY HH24:MI:SS') from dual;
TO_DATE('08/AUG/200414:00:00','DD/MON/YYYYHH24:MI:SS')-TO_DATE('08/AUG/20048:00:
--------------------------------------------------------------------------------
.25
The difference between those 2 dates is 0.25 days or 6 hours.
select dump(to_date('08/AUG/2004 14:00:00', 'DD/MON/YYYY HH24:MI:SS')
- to_date('08/AUG/2004 8:00:00', 'DD/MON/YYYY HH24:MI:SS')) from dual;
DUMP(TO_DATE('08/AUG/200414:00:
-------------------------------
Typ=14 Len=8: 0,0,0,0,96,84,0,0
Now this time, since the difference is 0 days and 6 hours, it is expected that the first 4 bytes are 0. For the last 4 bytes, we can reverse them (because CPU is little-endian) and get 84,96 = 01010100 01100000 base 2 = 21600 in decimal. Converting 21600 seconds to hours gives you 6 hours which is the difference which we expected.
Hope this helps anyone who was wondering how a DATE subtraction is actually stored.
You get the syntax error because the date math does not return a NUMBER, but it returns an INTERVAL:
SQL> SELECT DUMP(SYSDATE - start_date) from test;
DUMP(SYSDATE-START_DATE)
--------------------------------------
Typ=14 Len=8: 188,10,0,0,223,65,1,0
You need to convert the number in your example into an INTERVAL first using the NUMTODSINTERVAL Function
For example:
SQL> SELECT (SYSDATE - start_date) DAY(5) TO SECOND from test;
(SYSDATE-START_DATE)DAY(5)TOSECOND
----------------------------------
+02748 22:50:04.000000
SQL> SELECT (SYSDATE - start_date) from test;
(SYSDATE-START_DATE)
--------------------
2748.9515
SQL> select NUMTODSINTERVAL(2748.9515, 'day') from dual;
NUMTODSINTERVAL(2748.9515,'DAY')
--------------------------------
+000002748 22:50:09.600000000
SQL>
Based on the reverse cast with the NUMTODSINTERVAL() function, it appears some rounding is lost in translation.
Simple way is:
Math.Ceiling(decimal.Parse(yourNumber + ""));
You can also use
$('#myModal').hasClass('show');
Tested and working!
with https, user & password
<?php
//Data, connection, auth
$dataFromTheForm = $_POST['fieldName']; // request data from the form
$soapUrl = "https://connecting.website.com/soap.asmx?op=DoSomething"; // asmx URL of WSDL
$soapUser = "username"; // username
$soapPassword = "password"; // password
// xml post structure
$xml_post_string = '<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
<soap:Body>
<GetItemPrice xmlns="http://connecting.website.com/WSDL_Service"> // xmlns value to be set to your WSDL URL
<PRICE>'.$dataFromTheForm.'</PRICE>
</GetItemPrice >
</soap:Body>
</soap:Envelope>'; // data from the form, e.g. some ID number
$headers = array(
"Content-type: text/xml;charset=\"utf-8\"",
"Accept: text/xml",
"Cache-Control: no-cache",
"Pragma: no-cache",
"SOAPAction: http://connecting.website.com/WSDL_Service/GetPrice",
"Content-length: ".strlen($xml_post_string),
); //SOAPAction: your op URL
$url = $soapUrl;
// PHP cURL for https connection with auth
$ch = curl_init();
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 1);
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_USERPWD, $soapUser.":".$soapPassword); // username and password - declared at the top of the doc
curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
curl_setopt($ch, CURLOPT_TIMEOUT, 10);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $xml_post_string); // the SOAP request
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
// converting
$response = curl_exec($ch);
curl_close($ch);
// converting
$response1 = str_replace("<soap:Body>","",$response);
$response2 = str_replace("</soap:Body>","",$response1);
// convertingc to XML
$parser = simplexml_load_string($response2);
// user $parser to get your data out of XML response and to display it.
?>
You can use:
cat f.csv | sed 's/,/ /g' | awk '{print $1 " / " $4}'
or
echo "Hello,World,Questions,Answers,bash shell,script" | sed 's/,/ /g' | awk '{print $1 " / " $4}'
This is the part that replace comma with space
sed 's/,/ /g'
You have to free()
the allocated memory in exact reverse order of how it was allocated using malloc()
.
Note that You should free the memory only after you are done with your usage of the allocated pointers.
memory allocation for 1D arrays:
buffer = malloc(num_items*sizeof(double));
memory deallocation for 1D arrays:
free(buffer);
memory allocation for 2D arrays:
double **cross_norm=(double**)malloc(150 * sizeof(double *));
for(i=0; i<150;i++)
{
cross_norm[i]=(double*)malloc(num_items*sizeof(double));
}
memory deallocation for 2D arrays:
for(i=0; i<150;i++)
{
free(cross_norm[i]);
}
free(cross_norm);
The accepted answer is not the right one, because the question is not about renaming a file into a file, but moving many files into a directory. shutil.move
will do the work, but for this purpose os.rename
is useless (as stated on comments) because destination must have an explicit file name.
Any reason you cannot just change it on the object directly? It is not as if javascript enforces visibility of a property on an object.
It seems strange, but nonetheless HTML5 supports drawing lines, circles, rectangles and many other basic shapes, it does not have anything suitable for drawing the basic point. The only way to do so is to simulate a point with whatever you have.
So basically there are 3 possible solutions:
Each of them has their drawbacks.
Line
function point(x, y, canvas){
canvas.beginPath();
canvas.moveTo(x, y);
canvas.lineTo(x+1, y+1);
canvas.stroke();
}
Keep in mind that we are drawing to South-East direction, and if this is the edge, there can be a problem. But you can also draw in any other direction.
Rectangle
function point(x, y, canvas){
canvas.strokeRect(x,y,1,1);
}
or in a faster way using fillRect because render engine will just fill one pixel.
function point(x, y, canvas){
canvas.fillRect(x,y,1,1);
}
Circle
One of the problems with circles is that it is harder for an engine to render them
function point(x, y, canvas){
canvas.beginPath();
canvas.arc(x, y, 1, 0, 2 * Math.PI, true);
canvas.stroke();
}
the same idea as with rectangle you can achieve with fill.
function point(x, y, canvas){
canvas.beginPath();
canvas.arc(x, y, 1, 0, 2 * Math.PI, true);
canvas.fill();
}
Problems with all these solutions:
If you are wondering, what is the best way to draw a point, I would go with filled rectangle. You can see my jsperf here with comparison tests
I faced similar issues , I Just clear the Indexes of particular fields then its works for me . https://docs.mongodb.com/v3.2/reference/method/db.collection.dropIndexes/
Another way to do this is via the fastai library. This worked like a charm for me. I was facing a SSL: CERTIFICATE_VERIFY_FAILED Error
using urlretrieve
so I tried that.
url = 'https://www.linkdoesntexist.com/lennon.jpg'
fastai.core.download_url(url,'image1.jpg', show_progress=False)
public class GPSService extends Service implements GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, com.google.android.gms.location.LocationListener {
private LocationRequest mLocationRequest;
private GoogleApiClient mGoogleApiClient;
private static final String LOGSERVICE = "#######";
@Override
public void onCreate() {
super.onCreate();
buildGoogleApiClient();
Log.i(LOGSERVICE, "onCreate");
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
Log.i(LOGSERVICE, "onStartCommand");
if (!mGoogleApiClient.isConnected())
mGoogleApiClient.connect();
return START_STICKY;
}
@Override
public void onConnected(Bundle bundle) {
Log.i(LOGSERVICE, "onConnected" + bundle);
Location l = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
if (l != null) {
Log.i(LOGSERVICE, "lat " + l.getLatitude());
Log.i(LOGSERVICE, "lng " + l.getLongitude());
}
startLocationUpdate();
}
@Override
public void onConnectionSuspended(int i) {
Log.i(LOGSERVICE, "onConnectionSuspended " + i);
}
@Override
public void onLocationChanged(Location location) {
Log.i(LOGSERVICE, "lat " + location.getLatitude());
Log.i(LOGSERVICE, "lng " + location.getLongitude());
LatLng mLocation = (new LatLng(location.getLatitude(), location.getLongitude()));
EventBus.getDefault().post(mLocation);
}
@Override
public void onDestroy() {
super.onDestroy();
Log.i(LOGSERVICE, "onDestroy - Estou sendo destruido ");
}
@Nullable
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public void onConnectionFailed(ConnectionResult connectionResult) {
Log.i(LOGSERVICE, "onConnectionFailed ");
}
private void initLocationRequest() {
mLocationRequest = new LocationRequest();
mLocationRequest.setInterval(5000);
mLocationRequest.setFastestInterval(2000);
mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
}
private void startLocationUpdate() {
initLocationRequest();
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return;
}
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
}
private void stopLocationUpdate() {
LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, this);
}
protected synchronized void buildGoogleApiClient() {
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addOnConnectionFailedListener(this)
.addConnectionCallbacks(this)
.addApi(LocationServices.API)
.build();
}
}
Ok I think I have solves the problem below is a working code
//
package xmlhttp;
import org.jdesktop.http.Response;
import org.jdesktop.http.Session;
import org.jdesktop.http.State;
public class GetXmlHttp{
public static void main(String[] args) {
getResponse();
}
public static void getResponse()
{
final Session session = new Session();
try {
String url="http://192.172.2.23:8080/geoserver/wfs?request=GetFeature&version=1.1.0&outputFormat=GML2&typeName=topp:networkcoverage,topp:tehsil&bbox=73.07846689124875,33.67929015631999,73.07946689124876,33.68029015632,EPSG:4326";
final Response res=session.get(url);
boolean notDone=true;
do
{
System.out.print(session.getState().toString());
if(session.getState()==State.DONE)
{
String xml=res.toString();
System.out.println(xml);
notDone=false;
}
}while(notDone);
} catch (Exception e1) {
e1.printStackTrace();
}
}
}
Your error is because you have:
JOIN user ON article.author_id = user.id
LEFT JOIN user ON article.modified_by = user.id
You have two instances of the same table, but the database can't determine which is which. To fix this, you need to use table aliases:
JOIN USER u ON article.author_id = u.id
LEFT JOIN USER u2 ON article.modified_by = u2.id
It's good habit to always alias your tables, unless you like writing the full table name all the time when you don't have situations like these.
The next issues to address will be:
SELECT article.* , section.title, category.title, user.name, user.name
1) Never use SELECT *
- always spell out the columns you want, even if it is the entire table. Read this SO Question to understand why.
2) You'll get ambiguous column errors relating to the user.name
columns because again, the database can't tell which table instance to pull data from. Using table aliases fixes the issue:
SELECT article.* , section.title, category.title, u.name, u2.name
Tims answer seems to me as misleading. Especially when urllib2 does not return expected code. For example this Error will be fatal (believe or not - it is not uncommon one when downloading urls):
AttributeError: 'URLError' object has no attribute 'code'
Fast, but maybe not the best solution would be code using nested try/except block:
import urllib2
try:
urllib2.urlopen("some url")
except urllib2.HTTPError, err:
try:
if err.code == 404:
# Handle the error
else:
raise
except:
...
More information to the topic of nested try/except blocks Are nested try/except blocks in python a good programming practice?
I just had this problem and wrapping each cell with the CLEAN
function fixed it for me. That should be relatively easy to do by doing =CLEAN(
, selecting your cell, and then autofilling the rest of the column. After I did this, pastes into Notepad or any other program no longer had duplicate quotes.
It doesn't - the C# compiler does :)
So this code:
string x = "hello";
string y = "there";
string z = "chaps";
string all = x + y + z;
actually gets compiled as:
string x = "hello";
string y = "there";
string z = "chaps";
string all = string.Concat(x, y, z);
(Gah - intervening edit removed other bits accidentally.)
The benefit of the C# compiler noticing that there are multiple string concatenations here is that you don't end up creating an intermediate string of x + y
which then needs to be copied again as part of the concatenation of (x + y)
and z
. Instead, we get it all done in one go.
EDIT: Note that the compiler can't do anything if you concatenate in a loop. For example, this code:
string x = "";
foreach (string y in strings)
{
x += y;
}
just ends up as equivalent to:
string x = "";
foreach (string y in strings)
{
x = string.Concat(x, y);
}
... so this does generate a lot of garbage, and it's why you should use a StringBuilder
for such cases. I have an article going into more details about the two which will hopefully answer further questions.
Are you sure it is smaller?
Bitmap original = BitmapFactory.decodeStream(getAssets().open("1024x768.jpg"));
ByteArrayOutputStream out = new ByteArrayOutputStream();
original.compress(Bitmap.CompressFormat.PNG, 100, out);
Bitmap decoded = BitmapFactory.decodeStream(new ByteArrayInputStream(out.toByteArray()));
Log.e("Original dimensions", original.getWidth()+" "+original.getHeight());
Log.e("Compressed dimensions", decoded.getWidth()+" "+decoded.getHeight());
Gives
12-07 17:43:36.333: E/Original dimensions(278): 1024 768
12-07 17:43:36.333: E/Compressed dimensions(278): 1024 768
Maybe you get your bitmap from a resource, in which case the bitmap dimension will depend on the phone screen density
Bitmap bitmap=((BitmapDrawable)getResources().getDrawable(R.drawable.img_1024x768)).getBitmap();
Log.e("Dimensions", bitmap.getWidth()+" "+bitmap.getHeight());
12-07 17:43:38.733: E/Dimensions(278): 768 576
select case
when exists (SELECT 1 FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = 'Tags' AND COLUMN_NAME = 'ModifiedByUser')
then 0
else 1
end
About the .dex File :
One of the most remarkable features of the Dalvik Virtual Machine
(the workhorse under the Android system) is that it does not use Java bytecode. Instead, a homegrown format called DEX was introduced and not even the bytecode instructions are the same as Java bytecode instructions.
Compiled Android application code file.
Android programs are compiled into .dex
(Dalvik Executable) files, which are in turn zipped into a single .apk
file on the device. .dex
files can be created by automatically translating compiled applications written in the Java programming language.
Dex file format:
1. File Header
2. String Table
3. Class List
4. Field Table
5. Method Table
6. Class Definition Table
7. Field List
8. Method List
9. Code Header
10. Local Variable List
Android has documentation on the Dalvik Executable Format
(.dex files). You can find out more over at the official docs: Dex File Format
.dex
files are similar to java class files, but they were run under the Dalkvik Virtual Machine (DVM) on older Android versions, and compiled at install time on the device to native code with ART on newer Android versions.
You can decompile
.dex using the dexdump
tool which is provided in android-sdk.
There are also some Reverse Engineering Techniques to make a jar file
or java class file
from a .dex
file.
If your data.frame
is a data.table
, you can use special symbol .I
:
data[, ID := .I]
You can use the file_get_contents
function to access remote files. See http://php.net/manual/en/function.file-get-contents.php for details.
Nodemailer Module is the simplest way to send emails in node.js.
Try this sample example form: http://www.tutorialindustry.com/nodejs-mail-tutorial-using-nodemailer-module
Additional Info: http://www.nodemailer.com/
You can use defaultdict:
>>> from collections import defaultdict
>>> d = defaultdict(list)
>>> a = ['1', '2']
>>> for i in a:
... for j in range(int(i), int(i) + 2):
... d[j].append(i)
...
>>> d
defaultdict(<type 'list'>, {1: ['1'], 2: ['1', '2'], 3: ['2']})
>>> d.items()
[(1, ['1']), (2, ['1', '2']), (3, ['2'])]
It should also be possible to either extend the listener by prototyping it (if we have a reference to it and its not an anonymous function) -or make the onclick
call a call to a function library (a function calling other functions).
Like:
elm.onclick = myFunctionList;
function myFunctionList(){
myFunc1();
myFunc2();
}
This means we never have to change the onclick
call just alter the function myFunctionList()
to do whatever we want, but this leaves us without control of bubbling/catching phases so should be avoided for newer browsers.
This worked for me in a small test:
sourceEncoding = "iso-8859-1"
targetEncoding = "utf-8"
source = open("source")
target = open("target", "w")
target.write(unicode(source.read(), sourceEncoding).encode(targetEncoding))
You are allow to use php_value to change php setting in .htaccess file. Same like how php.ini did.
Example:
php_value date.timezone Asia/Kuala_Lumpur
For other php setting, please read http://www.php.net/manual/en/ini.list.php
This comment syntax should work for you:
@* enter comments here *@
First change apache listen port 80 to 8080 apache in /etc/apache2/ports.conf include
Listen 1.2.3.4:80 to 1.2.3.4:8080
sudo service apache2 restart
or
sudo service httpd restart // in case of centos
then add nginx as reverse proxy server that will listen apache port
server {
listen 1.2.3.4:80;
server_name some.com;
access_log /var/log/nginx/something-access.log;
location / {
proxy_pass http://localhost:8080;
proxy_redirect off;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
location ~* ^.+\.(jpg|js|jpeg|png)$ {
root /usr/share/nginx/html/;
}
location /404.html {
root /usr/share/nginx/html/40x.html;
}
error_page 404 /404.html;
location = /40x.html {
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
}
# put code for static content like js/css/images/fonts
}
After changes restart nginx server
sudo service nginx restart
Now all traffic will be handled by nginx server and send all dynamic request to apache and static conten is served by nginx server.
For advance configuration like cache :
As Felix Kling said in the comments, provided your times are based on a 24 hour clock (and they should be if there's no AM/PM) and provided they are always in the format HH:MM:SS
you can do a direct string comparison:
var str1 = "10:20:45",
str2 = "05:10:10";
if (str1 > str2)
alert("Time 1 is later than time 2");
else
alert("Time 2 is later than time 1");
Its is possible by using mach_inject. Take a look at Death to .DS_Store
I found that overriding HFSPlusPropertyStore::FlushChanges() with a function that simply did nothing, successfully prevented the creation of .DS_Store files on both Snow Leopard and Lion.
NOTE: On 10.11 you can not inject code into system apps.
Yes, You can use gcc to compile your asm code. Use -c for compilation like this:
gcc -c file.S -o file.o
This will give object code file named file.o. To invoke linker perform following after above command:
gcc file.o -o file
Sub Scrape()
Dim Browser As InternetExplorer
Dim Document As htmlDocument
Dim Elements As IHTMLElementCollection
Dim Element As IHTMLElement
Set Browser = New InternetExplorer
Browser.Visible = True
Browser.navigate "http://www.stackoverflow.com"
Do While Browser.Busy And Not Browser.readyState = READYSTATE_COMPLETE
DoEvents
Loop
Set Document = Browser.Document
Set Elements = Document.getElementById("hmenus").getElementsByTagName("li")
For Each Element In Elements
Debug.Print Element.innerText
'Questions
'Tags
'Users
'Badges
'Unanswered
'Ask Question
Next Element
Set Document = Nothing
Set Browser = Nothing
End Sub
try this.
if (ViewState["CurrentTable"] != null)
{
DataTable dtCurrentTable = (DataTable)ViewState["CurrentTable"];
DataRow drCurrentRow = null;
if (dtCurrentTable.Rows.Count > 0)
{
for (int i = 1; i <= dtCurrentTable.Rows.Count; i++)
{
//extract the TextBox values
TextBox box1 = (TextBox)Gridview1.Rows[i].Cells[1].FindControl("txt_type");
TextBox box2 = (TextBox)Gridview1.Rows[i].Cells[2].FindControl("txt_total");
TextBox box3 = (TextBox)Gridview1.Rows[i].Cells[3].FindControl("txt_max");
TextBox box4 = (TextBox)Gridview1.Rows[i].Cells[4].FindControl("txt_min");
TextBox box5 = (TextBox)Gridview1.Rows[i].Cells[5].FindControl("txt_rate");
drCurrentRow = dtCurrentTable.NewRow();
drCurrentRow["RowNumber"] = i + 1;
dtCurrentTable.Rows[i - 1]["Column1"] = box1.Text;
dtCurrentTable.Rows[i - 1]["Column2"] = box2.Text;
dtCurrentTable.Rows[i - 1]["Column3"] = box3.Text;
dtCurrentTable.Rows[i - 1]["Column4"] = box4.Text;
dtCurrentTable.Rows[i - 1]["Column5"] = box5.Text;
rowIndex++;
}
dtCurrentTable.Rows.Add(drCurrentRow);
ViewState["CurrentTable"] = dtCurrentTable;
Gridview1.DataSource = dtCurrentTable;
Gridview1.DataBind();
}
}
else
{
Response.Write("ViewState is null");
}
It is an old post, but I will try to update it with a new information.
To use custom events you need to bind it to some DOM element and to trigger it. So you need to use
.on() method takes an event type and an event handling function as arguments. Optionally, it can also receive event-related data as its second argument, pushing the event handling function to the third argument. Any data that is passed will be available to the event handling function in the data property of the event object. The event handling function always receives the event object as its first argument.
and
.trigger() method takes an event type as its argument. Optionally, it can also take an array of values. These values will be passed to the event handling function as arguments after the event object.
The code looks like this:
$(document).on("getMsg", {
msg: "Hello to everyone",
time: new Date()
}, function(e, param) {
console.log( e.data.msg );
console.log( e.data.time );
console.log( param );
});
$( document ).trigger("getMsg", [ "Hello guys"] );
Nice explanation can be found here and here. Why exactly this can be useful? I found how to use it in this excellent explanation from twitter engineer.
P.S. In plain javascript you can do this with new CustomEvent, but beware of IE and Safari problems.
FYI: In .NET, Hashtable
is thread safe for use by multiple reader threads and a single writing thread, while in Dictionary
public static members are thread safe, but any instance members are not guaranteed to be thread safe.
We had to change all our Dictionaries back to Hashtable
because of this.
use get
instead of load
// ...
try {
session = HibernateUtil.getSessionFactory().openSession();
user = (User) session.get(User.class, user_id);
} catch (Exception e) {
// ...
Something like:
>>> bytes.fromhex('4a4b4c').decode('utf-8')
'JKL'
Just put the actual encoding you are using.
I needed to keep using a pure UILabel, so called this from my tap recognizer (this is based on malex's response here: Character index at touch point for UILabel )
UILabel* label = (UILabel*)gesture.view;
CGPoint tapLocation = [gesture locationInView:label];
// create attributed string with paragraph style from label
NSMutableAttributedString* attr = [label.attributedText mutableCopy];
NSMutableParagraphStyle* paragraphStyle = [NSMutableParagraphStyle new];
paragraphStyle.alignment = label.textAlignment;
[attr addAttribute:NSParagraphStyleAttributeName value:paragraphStyle range:NSMakeRange(0, label.attributedText.length)];
// init text storage
NSTextStorage *textStorage = [[NSTextStorage alloc] initWithAttributedString:attr];
NSLayoutManager *layoutManager = [[NSLayoutManager alloc] init];
[textStorage addLayoutManager:layoutManager];
// init text container
NSTextContainer *textContainer = [[NSTextContainer alloc] initWithSize:CGSizeMake(label.frame.size.width, label.frame.size.height+100) ];
textContainer.lineFragmentPadding = 0;
textContainer.maximumNumberOfLines = label.numberOfLines;
textContainer.lineBreakMode = label.lineBreakMode;
[layoutManager addTextContainer:textContainer];
// find tapped character
NSUInteger characterIndex = [layoutManager characterIndexForPoint:tapLocation
inTextContainer:textContainer
fractionOfDistanceBetweenInsertionPoints:NULL];
// process link at tapped character
[attr enumerateAttributesInRange:NSMakeRange(characterIndex, 1)
options:0
usingBlock:^(NSDictionary<NSString *,id> * _Nonnull attrs, NSRange range, BOOL * _Nonnull stop) {
if (attrs[NSLinkAttributeName]) {
NSString* urlString = attrs[NSLinkAttributeName];
NSURL* url = [NSURL URLWithString:urlString];
[[UIApplication sharedApplication] openURL:url];
}
}];
Check host file which like this
##
# Host Database
#
# localhost is used to configure the loopback interface
# when the system is booting. Do not change this entry.
##
127.0.0.1 localhost
255.255.255.255 broadcasthost
As far as I can remember, an array is actually a group of pointers. For example
p[1]== *(&p+1)
is a true statement
If you're using Eclipse, just have your WSDL in a .wsdl file, eclipse will validate it automatically.
From the Doc
The WSDL validator handles validation according to the 4 step process defined above. Steps 1 and 2 are both delegated to Apache Xerces (and XML parser). Step 3 is handled by the WSDL validator and any extension namespace validators (more on extensions below). Step 4 is handled by any declared custom validators (more on this below as well). Each step must pass in order for the next step to run.
Let me give some information on them:
quit()
simply raises the SystemExit
exception.
Furthermore, if you print it, it will give a message:
>>> print (quit)
Use quit() or Ctrl-Z plus Return to exit
>>>
This functionality was included to help people who do not know Python. After all, one of the most likely things a newbie will try to exit Python is typing in quit
.
Nevertheless, quit
should not be used in production code. This is because it only works if the site
module is loaded. Instead, this function should only be used in the interpreter.
exit()
is an alias for quit
(or vice-versa). They exist together simply to make Python more user-friendly.
Furthermore, it too gives a message when printed:
>>> print (exit)
Use exit() or Ctrl-Z plus Return to exit
>>>
However, like quit
, exit
is considered bad to use in production code and should be reserved for use in the interpreter. This is because it too relies on the site
module.
sys.exit()
also raises the SystemExit
exception. This means that it is the same as quit
and exit
in that respect.
Unlike those two however, sys.exit
is considered good to use in production code. This is because the sys
module will always be there.
os._exit()
exits the program without calling cleanup handlers, flushing stdio buffers, etc. Thus, it is not a standard way to exit and should only be used in special cases. The most common of these is in the child process(es) created by os.fork
.
Note that, of the four methods given, only this one is unique in what it does.
Summed up, all four methods exit the program. However, the first two are considered bad to use in production code and the last is a non-standard, dirty way that is only used in special scenarios. So, if you want to exit a program normally, go with the third method: sys.exit
.
Or, even better in my opinion, you can just do directly what sys.exit
does behind the scenes and run:
raise SystemExit
This way, you do not need to import sys
first.
However, this choice is simply one on style and is purely up to you.
Please check your web.xml again. You might be making some silly mistake. As my application is working fine with the same init-param configuration...
Please copy paste the web.xml, if the problem still persists.
The Basics
The simplist way to convert one date format into another is to use strtotime()
with date()
. strtotime()
will convert the date into a Unix Timestamp. That Unix Timestamp can then be passed to date()
to convert it to the new format.
$timestamp = strtotime('2008-07-01T22:35:17.02');
$new_date_format = date('Y-m-d H:i:s', $timestamp);
Or as a one-liner:
$new_date_format = date('Y-m-d H:i:s', strtotime('2008-07-01T22:35:17.02'));
Keep in mind that strtotime()
requires the date to be in a valid format. Failure to provide a valid format will result in strtotime()
returning false which will cause your date to be 1969-12-31.
Using DateTime()
As of PHP 5.2, PHP offered the DateTime()
class which offers us more powerful tools for working with dates (and time). We can rewrite the above code using DateTime()
as so:
$date = new DateTime('2008-07-01T22:35:17.02');
$new_date_format = $date->format('Y-m-d H:i:s');
Working with Unix timestamps
date()
takes a Unix timeatamp as its second parameter and returns a formatted date for you:
$new_date_format = date('Y-m-d H:i:s', '1234567890');
DateTime() works with Unix timestamps by adding an @
before the timestamp:
$date = new DateTime('@1234567890');
$new_date_format = $date->format('Y-m-d H:i:s');
If the timestamp you have is in milliseconds (it may end in 000
and/or the timestamp is thirteen characters long) you will need to convert it to seconds before you can can convert it to another format. There's two ways to do this:
substr()
Trimming the last three digits can be acheived several ways, but using substr()
is the easiest:
$timestamp = substr('1234567899000', -3);
You can also convert the timestamp into seconds by dividing by 1000. Because the timestamp is too large for 32 bit systems to do math on you will need to use the BCMath library to do the math as strings:
$timestamp = bcdiv('1234567899000', '1000');
To get a Unix Timestamp you can use strtotime()
which returns a Unix Timestamp:
$timestamp = strtotime('1973-04-18');
With DateTime() you can use DateTime::getTimestamp()
$date = new DateTime('2008-07-01T22:35:17.02');
$timestamp = $date->getTimestamp();
If you're running PHP 5.2 you can use the U
formatting option instead:
$date = new DateTime('2008-07-01T22:35:17.02');
$timestamp = $date->format('U');
Working with non-standard and ambiguous date formats
Unfortunately not all dates that a developer has to work with are in a standard format. Fortunately PHP 5.3 provided us with a solution for that. DateTime::createFromFormat()
allows us to tell PHP what format a date string is in so it can be successfully parsed into a DateTime object for further manipulation.
$date = DateTime::createFromFormat('F-d-Y h:i A', 'April-18-1973 9:48 AM');
$new_date_format = $date->format('Y-m-d H:i:s');
In PHP 5.4 we gained the ability to do class member access on instantiation has been added which allows us to turn our DateTime()
code into a one-liner:
$new_date_format = (new DateTime('2008-07-01T22:35:17.02'))->format('Y-m-d H:i:s');
$new_date_format = DateTime::createFromFormat('F-d-Y h:i A', 'April-18-1973 9:48 AM')->format('Y-m-d H:i:s');
An updated solution of Plahcinski solution. Alternatively you can use fopen and fread for bigger files:
$fp = file('database.sql', FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
$query = '';
foreach ($fp as $line) {
if ($line != '' && strpos($line, '--') === false) {
$query .= $line;
if (substr($query, -1) == ';') {
mysql_query($query);
$query = '';
}
}
}
To fix your specific error you need to run that command as sudo, ie:
sudo gem install rails --pre
I think your assignment is backwards:
a[i] = b[i];
should be:
b[i] = a[i];
C++ supplies a string
class that can be used like this:
#include <string>
#include <iostream>
int main() {
std::string Something = "Some text";
std::cout << Something << std::endl;
}
or_()
function can be useful in case of unknown number of OR query components.
For example, let's assume that we are creating a REST service with few optional filters, that should return record if any of filters return true. On the other side, if parameter was not defined in a request, our query shouldn't change. Without or_()
function we must do something like this:
query = Book.query
if filter.title and filter.author:
query = query.filter((Book.title.ilike(filter.title))|(Book.author.ilike(filter.author)))
else if filter.title:
query = query.filter(Book.title.ilike(filter.title))
else if filter.author:
query = query.filter(Book.author.ilike(filter.author))
With or_()
function it can be rewritten to:
query = Book.query
not_null_filters = []
if filter.title:
not_null_filters.append(Book.title.ilike(filter.title))
if filter.author:
not_null_filters.append(Book.author.ilike(filter.author))
if len(not_null_filters) > 0:
query = query.filter(or_(*not_null_filters))
Make sure you are logged in as root user in your terminal.
Steps to start mongodb server in your mac
sudo su
mongod
Hope it helps you. Thanks
Transparency is controlled by the alpha channel (AA
in #AARRGGBB
). Maximal value (255 dec, FF hex) means fully opaque. Minimum value (0 dec, 00 hex) means fully transparent. Values in between are semi-transparent, i.e. the color is mixed with the background color.
To get a fully transparent color set the alpha to zero. RR
, GG
and BB
are irrelevant in this case because no color will be visible. This means #00FFFFFF
("transparent White") is the same color as #00F0F8FF
("transparent AliceBlue").
To keep it simple one chooses black (#00000000
) or white (#00FFFFFF
) if the color does not matter.
In the table you linked to you'll find Transparent
defined as #00FFFFFF
.
You can use COPY table TO ... WITH BINARY
which is "somewhat faster than the text and CSV formats." Only do this if you have millions of rows to insert, and if you are comfortable with binary data.
Here is an example recipe in Python, using psycopg2 with binary input.
I solved the problem by installing the development related features of IIS.
By default, IIS doesn't install all the required features.
You should install the IIS development related features to fix the problem.
With a regular expression and the function gsub()
:
group <- c("12357e", "12575e", "197e18", "e18947")
group
[1] "12357e" "12575e" "197e18" "e18947"
gsub("e", "", group)
[1] "12357" "12575" "19718" "18947"
What gsub
does here is to replace each occurrence of "e"
with an empty string ""
.
See ?regexp
or gsub
for more help.
As per java documentation definition of Thread.sleep is :
Thread.sleep(t);
where t => time in millisecons to sleep
If you want to sleep for 1 second you should have :
Thread.sleep(1000);
You can do this in Javascript
.
var time = new Date();
console.log(time.getHours() + ":" + time.getMinutes() + ":" + time.getSeconds());
At present it returns 15:5:18
. Note that if any of the values are less than 10, they will display using only one digit, not two.
Check this in JSFiddle
Updates:
For prefixed 0's try
var time = new Date();
console.log(
("0" + time.getHours()).slice(-2) + ":" +
("0" + time.getMinutes()).slice(-2) + ":" +
("0" + time.getSeconds()).slice(-2));
You first have to set the enctype attribute of the form to "multipart/form-data"
This is shown below.
<form action="Controller" method="post" enctype="multipart/form-data">
<label class="file-upload"> Click here to upload an Image </label>
<input type="file" name="file" id="file" required>
</form>
And then, in the Servlet "Controller" add the Annotation for a Multi-part to indicate multipart data is processed in the servlet.
After doing this, retrieve the part sent through the form and then retrieve the file name (with path)of the submitted file. Use this to create a new file in the desired path and write the parts of the file to the newly created file to recreate the file.
As shown below:
@MultipartConfig
public class Controller extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
insertImage(request, response);
}
private void addProduct(HttpServletRequest request, HttpServletResponse response) {
Part filePart = request.getPart("file");
String imageName = Paths.get(filePart.getSubmittedFileName()).getFileName().toString();
String imageSavePath = "specify image path to save image"; //path to save image
FileOutputStream outputStream = null;
InputStream fileContent = null;
try {
outputStream = new FileOutputStream(new File(imageSavePath + File.separator + imageName));
//creating a new file with file path and the file name
fileContent = filePart.getInputStream();
//getting the input stream
int readBytes = 0;
byte[] readArray = new byte[1024];
//initializing a byte array with size 1024
while ((readBytes = fileContent.read(readArray)) != -1) {
outputStream.write(readArray, 0, readBytes);
}//this loop will write the contents of the byte array unitl the end to the output stream
} catch (Exception ex) {
System.out.println("Error Writing File: " + ex);
} finally {
if (outputStream != null) {
outputStream.close();
//closing the output stream
}
if (fileContent != null) {
fileContent.close();
//clocsing the input stream
}
}
}
}
You can handle it like this:
for API level 5 and greater
@Override
public void onBackPressed() {
// your code.
}
older than API 5
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
// your code
return true;
}
return super.onKeyDown(keyCode, event);
}
Use Manatee.Json https://github.com/gregsdennis/Manatee.Json/wiki/Usage
And you can convert the entire object to a string, filename.json is expected to be located in documents folder.
var text = File.ReadAllText("filename.json");
var json = JsonValue.Parse(text);
while (JsonValue.Null != null)
{
Console.WriteLine(json.ToString());
}
Console.ReadLine();
getDimensions(id) {
var obj = questions.filter(function(node) {
return node.id==id;
});
return obj;
}
10 is the initial capacity of the AL, not the size (which is 0). You should mention the initial capacity to some high value when you are going to have a lots of elements, because it avoids the overhead of expanding the capacity as you keep adding elements.
Google is depreciating C2DM, but in its place their introducing GCM (Google Cloud Messaging) I dont think theirs any quota and its free! It does require Android 2.2+ though! http://developer.android.com/guide/google/gcm/index.html
Just override the onKeyDown method and check if the back button was pressed.
@Override
public boolean onKeyDown(int keyCode, KeyEvent event)
{
if (keyCode == KeyEvent.KEYCODE_BACK)
{
//Back buttons was pressed, do whatever logic you want
}
return false;
}
You should use fm element to delete blank spaces.
SELECT TO_CHAR(sysdate, 'fmDAY DD "de" MONTH "de" YYYY') CURRENT_DATE
FROM dual;
The reason mine was showing the "Lock" message was actually due to me having opened an SQLite3 IDE on my mac and that was the reason it was locked. I assume I was playing around with the DB within the IDE and hadn't saved the changes and therefor a lock was placed.
Cut long story short, check that there are no unsaved changes on the db and also that it is not being used elsewhere.
To me, it seems as if your actual intention is to put different words on different lines. But let me answer your first question:
JLabel lab=new JLabel("text");
lab.setHorizontalAlignment(SwingConstants.LEFT);
And if you have an image:
JLabel lab=new Jlabel("text");
lab.setIcon(new ImageIcon("path//img.png"));
lab.setHorizontalTextPosition(SwingConstants.LEFT);
But, I believe you want to make the label such that there are only 2 words on 1 line.
In that case try this:
String urText="<html>You can<br>use basic HTML<br>in Swing<br> components,"
+"Hope<br> I helped!";
JLabel lac=new JLabel(urText);
lac.setAlignmentX(Component.RIGHT_ALIGNMENT);
it is just a sample to avoid max recursion error. we have to use option (maxrecursion 365); or option (maxrecursion 0);
DECLARE @STARTDATE datetime;
DECLARE @EntDt datetime;
set @STARTDATE = '01/01/2009';
set @EntDt = '12/31/2009';
declare @dcnt int;
;with DateList as
(
select @STARTDATE DateValue
union all
select DateValue + 1 from DateList
where DateValue + 1 < convert(VARCHAR(15),@EntDt,101)
)
select count(*) as DayCnt from (
select DateValue,DATENAME(WEEKDAY, DateValue ) as WEEKDAY from DateList
where DATENAME(WEEKDAY, DateValue ) not IN ( 'Saturday','Sunday' )
)a
option (maxrecursion 365);
Use wordwrap()
to truncate the string without breaking words if the string is longer than 50 characters, and just add ...
at the end:
$str = $input;
if( strlen( $input) > 50) {
$str = explode( "\n", wordwrap( $input, 50));
$str = $str[0] . '...';
}
echo $str;
Otherwise, using solutions that do substr( $input, 0, 50);
will break words.
Because you are asking the compiler to initialize a static variable with code that is inherently dynamic.
public static class TimeSpanFormattingExtensions
{
public static string ToReadableString(this TimeSpan span)
{
return string.Join(", ", span.GetReadableStringElements()
.Where(str => !string.IsNullOrWhiteSpace(str)));
}
private static IEnumerable<string> GetReadableStringElements(this TimeSpan span)
{
yield return GetDaysString((int)Math.Floor(span.TotalDays));
yield return GetHoursString(span.Hours);
yield return GetMinutesString(span.Minutes);
yield return GetSecondsString(span.Seconds);
}
private static string GetDaysString(int days)
{
if (days == 0)
return string.Empty;
if (days == 1)
return "1 day";
return string.Format("{0:0} days", days);
}
private static string GetHoursString(int hours)
{
if (hours == 0)
return string.Empty;
if (hours == 1)
return "1 hour";
return string.Format("{0:0} hours", hours);
}
private static string GetMinutesString(int minutes)
{
if (minutes == 0)
return string.Empty;
if (minutes == 1)
return "1 minute";
return string.Format("{0:0} minutes", minutes);
}
private static string GetSecondsString(int seconds)
{
if (seconds == 0)
return string.Empty;
if (seconds == 1)
return "1 second";
return string.Format("{0:0} seconds", seconds);
}
}
buttonB.setIcon(new ImageIcon(this.getClass().getResource("imagename")));
You'll need to use a static
readonly
list instead. And if you want the list to be immutable then you might want to consider using ReadOnlyCollection<T>
rather than List<T>
.
private static readonly ReadOnlyCollection<string> _metrics =
new ReadOnlyCollection<string>(new[]
{
SourceFile.LOC,
SourceFile.MCCABE,
SourceFile.NOM,
SourceFile.NOA,
SourceFile.FANOUT,
SourceFile.FANIN,
SourceFile.NOPAR,
SourceFile.NDC,
SourceFile.CALLS
});
public static ReadOnlyCollection<string> Metrics
{
get { return _metrics; }
}
You can use String =~ Regex
. It returns position of full regex match in string.
irb> ("abc" =~ %r"abc") == 0
=> true
irb> ("aabc" =~ %r"abc") == 0
=> false
Solution for Swift 2:
let singleTapGesture = UITapGestureRecognizer(target: self, action: #selector(handleSingleTap))
singleTapGesture.numberOfTapsRequired = 1 // Optional for single tap
view.addGestureRecognizer(singleTapGesture)
let doubleTapGesture = UITapGestureRecognizer(target: self, action: #selector(handleDoubleTap))
doubleTapGesture.numberOfTapsRequired = 2
view.addGestureRecognizer(doubleTapGesture)
singleTapGesture.requireGestureRecognizerToFail(doubleTapGesture)
We use WinSCP. Its free. Its not a lib, but has a well documented and full featured command line interface that you can use with Process.Start.
Update: with v.5.0, WinSCP has a .NET wrapper library to the scripting layer of WinSCP.
If it is a pandas data frame you could do:
csv_data.to_sql=(con=mydb, name='<the name of your table>',
if_exists='replace', flavor='mysql')
to avoid the use of the for
.
I have had the same problem, but none of the answers quite gave a step by step of what I needed to do. This error happens because your socket file has not been created yet. All you have to do is:
/tmp/mysql.sock
is created, to do that you run: mysql server start
config/database.yml
file and add/edit the socket: /tmp/mysql.sock
entryrake:dbmigrate
once again and everything should workout fineMulti joins in SQL work by progressively creating derived tables one after the other. See this link explaining the process:
https://www.interfacett.com/blogs/multiple-joins-work-just-like-single-joins/
For the records, in OpenJPA before JPA2 it was @ElementDependant.
MsgBox("Variable {0} " , variable)
I actually think it may retain cached information when you close out the UIWebView
. I've tried removing a UIWebView
from my UIViewController
, releasing it, then creating a new one. The new one remembered exactly where I was at when I went back to an address without having to reload everything (it remembered my previous UIWebView
was logged in).
So a couple of suggestions:
[[NSURLCache sharedURLCache] removeCachedResponseForRequest:NSURLRequest];
This would remove a cached response for a specific request. There is also a call that will remove all cached responses for all requests ran on the UIWebView
:
[[NSURLCache sharedURLCache] removeAllCachedResponses];
After that, you can try deleting any associated cookies with the UIWebView
:
for(NSHTTPCookie *cookie in [[NSHTTPCookieStorage sharedHTTPCookieStorage] cookies]) {
if([[cookie domain] isEqualToString:someNSStringUrlDomain]) {
[[NSHTTPCookieStorage sharedHTTPCookieStorage] deleteCookie:cookie];
}
}
Swift 3:
// Remove all cache
URLCache.shared.removeAllCachedResponses()
// Delete any associated cookies
if let cookies = HTTPCookieStorage.shared.cookies {
for cookie in cookies {
HTTPCookieStorage.shared.deleteCookie(cookie)
}
}
If you wish to use CV2, you need to use the resize
function.
For example, this will resize both axes by half:
small = cv2.resize(image, (0,0), fx=0.5, fy=0.5)
and this will resize the image to have 100 cols (width) and 50 rows (height):
resized_image = cv2.resize(image, (100, 50))
Another option is to use scipy
module, by using:
small = scipy.misc.imresize(image, 0.5)
There are obviously more options you can read in the documentation of those functions (cv2.resize, scipy.misc.imresize).
Update:
According to the SciPy documentation:
imresize
is deprecated in SciPy 1.0.0, and will be removed in 1.2.0.
Useskimage.transform.resize
instead.
Note that if you're looking to resize by a factor, you may actually want skimage.transform.rescale
.
You need to use the jQuery AJAX or XMLHttpRequest() for post the data to the server. After data posting you can redirect your page to another page by window.location.href
.
Example:
var xhttp = new XMLHttpRequest();
xhttp.onreadystatechange = function() {
if (this.readyState == 4 && this.status == 200) {
window.location.href = 'https://website.com/my-account';
}
};
xhttp.open("POST", "demo_post.asp", true);
xhttp.send();
Basically what you do is correct. Looking at redmine docs you linked to, it seems that suffix after the dot in the url denotes type of posted data (.json for JSON, .xml for XML), which agrees with the response you get - Processing by AttachmentsController#upload as XML
. I guess maybe there's a bug in docs and to post binary data you should try using http://redmine/uploads
url instead of http://redmine/uploads.xml
.
Btw, I highly recommend very good and very popular Requests library for http in Python. It's much better than what's in the standard lib (urllib2). It supports authentication as well but I skipped it for brevity here.
import requests
with open('./x.png', 'rb') as f:
data = f.read()
res = requests.post(url='http://httpbin.org/post',
data=data,
headers={'Content-Type': 'application/octet-stream'})
# let's check if what we sent is what we intended to send...
import json
import base64
assert base64.b64decode(res.json()['data'][len('data:application/octet-stream;base64,'):]) == data
UPDATE
To find out why this works with Requests but not with urllib2 we have to examine the difference in what's being sent. To see this I'm sending traffic to http proxy (Fiddler) running on port 8888:
Using Requests
import requests
data = 'test data'
res = requests.post(url='http://localhost:8888',
data=data,
headers={'Content-Type': 'application/octet-stream'})
we see
POST http://localhost:8888/ HTTP/1.1
Host: localhost:8888
Content-Length: 9
Content-Type: application/octet-stream
Accept-Encoding: gzip, deflate, compress
Accept: */*
User-Agent: python-requests/1.0.4 CPython/2.7.3 Windows/Vista
test data
and using urllib2
import urllib2
data = 'test data'
req = urllib2.Request('http://localhost:8888', data)
req.add_header('Content-Length', '%d' % len(data))
req.add_header('Content-Type', 'application/octet-stream')
res = urllib2.urlopen(req)
we get
POST http://localhost:8888/ HTTP/1.1
Accept-Encoding: identity
Content-Length: 9
Host: localhost:8888
Content-Type: application/octet-stream
Connection: close
User-Agent: Python-urllib/2.7
test data
I don't see any differences which would warrant different behavior you observe. Having said that it's not uncommon for http servers to inspect User-Agent
header and vary behavior based on its value. Try to change headers sent by Requests one by one making them the same as those being sent by urllib2 and see when it stops working.
In the first case, the data are passed to the script via GET, in the second via POST.
http://docs.jquery.com/Ajax/load#urldatacallback
I don't think there are limits to the data size, but the completition of the remote call will of course take longer with great amount of data.
There are two main ways that you can do this. One of them is the standard CakePHP way, and the other is using a custom join.
It's worth pointing out that this advice is for CakePHP 2.x, not 3.x.
You would create a relationship with your User model and Messages Model, and use the containable behavior:
class User extends AppModel {
public $actsAs = array('Containable');
public $hasMany = array('Message');
}
class Message extends AppModel {
public $actsAs = array('Containable');
public $belongsTo = array('User');
}
You need to change the messages.from
column to be messages.user_id
so that cake can automagically associate the records for you.
Then you can do this from the messages controller:
$this->Message->find('all', array(
'contain' => array('User')
'conditions' => array(
'Message.to' => 4
),
'order' => 'Message.datetime DESC'
));
I recommend using the first method, because it will save you a lot of time and work. The first method also does the groundwork of setting up a relationship which can be used for any number of other find calls and conditions besides the one you need now. However, cakePHP does support a syntax for defining your own joins. It would be done like this, from the MessagesController
:
$this->Message->find('all', array(
'joins' => array(
array(
'table' => 'users',
'alias' => 'UserJoin',
'type' => 'INNER',
'conditions' => array(
'UserJoin.id = Message.from'
)
)
),
'conditions' => array(
'Message.to' => 4
),
'fields' => array('UserJoin.*', 'Message.*'),
'order' => 'Message.datetime DESC'
));
Note, I've left the field name messages.from
the same as your current table in this example.
Here is how you can do the first example using two relationships to the same model:
class User extends AppModel {
public $actsAs = array('Containable');
public $hasMany = array(
'MessagesSent' => array(
'className' => 'Message',
'foreignKey' => 'from'
)
);
public $belongsTo = array(
'MessagesReceived' => array(
'className' => 'Message',
'foreignKey' => 'to'
)
);
}
class Message extends AppModel {
public $actsAs = array('Containable');
public $belongsTo = array(
'UserFrom' => array(
'className' => 'User',
'foreignKey' => 'from'
)
);
public $hasMany = array(
'UserTo' => array(
'className' => 'User',
'foreignKey' => 'to'
)
);
}
Now you can do your find call like this:
$this->Message->find('all', array(
'contain' => array('UserFrom')
'conditions' => array(
'Message.to' => 4
),
'order' => 'Message.datetime DESC'
));
I really liked Maurius' explanation (highest upvoted response) with the three different methods for calling setTimeout
.
In my code I want to automatically auto-navigate to the previous page upon completion of an AJAX save event. The completion of the save event has a slight animation in the CSS indicating the save was successful.
In my code I found a difference between the first two examples:
setTimeout(window.history.back(), 3000);
This one does not wait for the timeout--the back() is called almost immediately no matter what number I put in for the delay.
However, changing this to:
setTimeout(function() {window.history.back()}, 3000);
This does exactly what I was hoping.
This is not specific to the back() operation, the same happens with alert()
. Basically with the alert()
used in the first case, the delay time is ignored. When I dismiss the popup the animation for the CSS continues.
Thus, I would recommend the second or third method he describes even if you are using built in functions and not using arguments.
The difference is that miniconda is just shipping the repository management system. So when you install it there is just the management system without packages. Whereas with Anaconda, it is like a distribution with some built in packages.
Like with any Linux distribution, there are some releases which bundles lots of updates for the included packages. That is why there is a difference in version numbering. If you only decide to upgrade Anaconda, you are updating a whole system.
Here is the same style as in large datasets:
x = df[:5]
y = pd.DataFrame([['...']*df.shape[1]], columns=df.columns, index=['...'])
z = df[-5:]
frame = [x, y, z]
result = pd.concat(frame)
print(result)
Output:
date temp
0 1981-01-01 00:00:00 20.7
1 1981-01-02 00:00:00 17.9
2 1981-01-03 00:00:00 18.8
3 1981-01-04 00:00:00 14.6
4 1981-01-05 00:00:00 15.8
... ... ...
3645 1990-12-27 00:00:00 14
3646 1990-12-28 00:00:00 13.6
3647 1990-12-29 00:00:00 13.5
3648 1990-12-30 00:00:00 15.7
3649 1990-12-31 00:00:00 13
If you want to set 777 permission to your created file than you can use the following method:
public void setPermission(File file) throws IOException{
Set<PosixFilePermission> perms = new HashSet<>();
perms.add(PosixFilePermission.OWNER_READ);
perms.add(PosixFilePermission.OWNER_WRITE);
perms.add(PosixFilePermission.OWNER_EXECUTE);
perms.add(PosixFilePermission.OTHERS_READ);
perms.add(PosixFilePermission.OTHERS_WRITE);
perms.add(PosixFilePermission.OTHERS_EXECUTE);
perms.add(PosixFilePermission.GROUP_READ);
perms.add(PosixFilePermission.GROUP_WRITE);
perms.add(PosixFilePermission.GROUP_EXECUTE);
Files.setPosixFilePermissions(file.toPath(), perms);
}
Default sorting is ascending, you need to add the keyword DESC to both your orders:
ORDER BY article_rating DESC, article_time DESC
Amazon has released SFTP services for S3, but they only do SFTP (not FTP or FTPES) and they can be cost prohibitive depending on your circumstances.
I'm the Founder of DocEvent.io, and we provide FTP/S Gateways for your S3 bucket without having to spin up servers or worry about infrastructure.
There are also other companies that provide a standalone FTP server that you pay by the month that can connect to an S3 bucket through the software configuration, for example brickftp.com.
Lastly there are also some AWS Marketplace apps that can help, here is a search link. Many of these spin up instances in your own infrastructure - this means you'll have to manage and upgrade the instances yourself which can be difficult to maintain and configure over time.
==
performs a reference equality check, whether the 2 objects (strings in this case) refer to the same object in the memory.
The equals()
method will check whether the contents or the states of 2 objects are the same.
Obviously ==
is faster, but will (might) give false results in many cases if you just want to tell if 2 String
s hold the same text.
Definitely the use of the equals()
method is recommended.
Don't worry about the performance. Some things to encourage using String.equals()
:
String.equals()
first checks for reference equality (using ==
), and if the 2 strings are the same by reference, no further calculation is performed!String.equals()
will next check the lengths of the strings. This is also a fast operation because the String
class stores the length of the string, no need to count the characters or code points. If the lengths differ, no further check is performed, we know they cannot be equal.When all is said and done, even if we have a guarantee that the strings are interns, using the equals()
method is still not that overhead that one might think, definitely the recommended way. If you want an efficient reference check, then use enums where it is guaranteed by the language specification and implementation that the same enum value will be the same object (by reference).
Those of you looking for a short command to switch off all ticks and labels should be fine with
plt.tick_params(top=False, bottom=False, left=False, right=False,
labelleft=False, labelbottom=False)
which allows type bool
for respective parameters since version matplotlib>=2.1.1
For custom tick settings, the docs are helpful:
https://matplotlib.org/api/_as_gen/matplotlib.axes.Axes.tick_params.html
Keep your private key, public key, known_hosts in same directory and try login as below:
ssh -I(small i) "hi.pem" ec2-user@ec2-**-***-**-***.us-west-2.compute.amazonaws.com
cd /Users/prince/Desktop
.
Now type ls
command
and you should see
**.pem **.ppk known_hosts
Note: You have to try to login from the same directory or you'll get a permission denied error as it can't find the .pem file from your present directory.
If you want to be able to SSH from any directory, you can add the following to you ~/.ssh/config
file...
Host your.server
HostName ec2-user@ec2-**-***-**-***.us-west-2.compute.amazonaws.com
User ec2-user
IdentityFile ~/.ec2/id_rsa-gsg-keypair
IdentitiesOnly yes
Now you can SSH to your server regardless of where the directory is by simply typing ssh your.server
(or whatever name you place after "Host").
A simple pure-Python implementation would be:
import math
import re
from collections import Counter
WORD = re.compile(r"\w+")
def get_cosine(vec1, vec2):
intersection = set(vec1.keys()) & set(vec2.keys())
numerator = sum([vec1[x] * vec2[x] for x in intersection])
sum1 = sum([vec1[x] ** 2 for x in list(vec1.keys())])
sum2 = sum([vec2[x] ** 2 for x in list(vec2.keys())])
denominator = math.sqrt(sum1) * math.sqrt(sum2)
if not denominator:
return 0.0
else:
return float(numerator) / denominator
def text_to_vector(text):
words = WORD.findall(text)
return Counter(words)
text1 = "This is a foo bar sentence ."
text2 = "This sentence is similar to a foo bar sentence ."
vector1 = text_to_vector(text1)
vector2 = text_to_vector(text2)
cosine = get_cosine(vector1, vector2)
print("Cosine:", cosine)
Prints:
Cosine: 0.861640436855
The cosine formula used here is described here.
This does not include weighting of the words by tf-idf, but in order to use tf-idf, you need to have a reasonably large corpus from which to estimate tfidf weights.
You can also develop it further, by using a more sophisticated way to extract words from a piece of text, stem or lemmatise it, etc.
You can also use the logname
command from the BSD General Commands Manual under Linux or MacOS to see the username of the user currently logged in, even if the user is performing a sudo
operation. This is useful, for instance, when modifying a user's crontab while installing a system-wide package with sudo: crontab -u $(logname)
Per man logname
:
LOGNAME(1)
NAME
logname -- display user's login name
For those that need Powershell to return additional information like the Http StatusCode, here's an example. Included are the two most likely ways to pass in credentials.
Its a slightly modified version of this SO answer:
How to obtain numeric HTTP status codes in PowerShell
$req = [system.Net.WebRequest]::Create($url)
# method 1 $req.UseDefaultCredentials = $true
# method 2 $req.Credentials = New-Object System.Net.NetworkCredential($username, $pwd, $domain);
try
{
$res = $req.GetResponse()
}
catch [System.Net.WebException]
{
$res = $_.Exception.Response
}
$int = [int]$res.StatusCode
$status = $res.StatusCode
return "$int $status"
Try checking his post. It shows how to implement transitions between web pages using AngularJS's ngRoute and ngAnimate: How to Make iPhone-Style Web Page Transitions Using AngularJS & CSS
The basic answer is: you need to iterate through loop and check any element contains the specified string. So, let's say the code is:
foreach(string item in myList)
{
if(item.Contains(myString))
return item;
}
The equivalent, but terse, code is:
mylist.Where(x => x.Contains(myString)).FirstOrDefault();
Here, x is a parameter that acts like "item" in the above code.
Yes, buffering should be used for better performance. Use BufferedReader OR byte[] to store your temp data.
thanks.
For those experimenting with this in phpMyAdmin, just a word:
phpMyAdmin appears to have a few problems with USING
. For the record this is phpMyAdmin run on Linux Mint, version: "4.5.4.1deb2ubuntu2", Database server: "10.2.14-MariaDB-10.2.14+maria~xenial - mariadb.org binary distribution".
I have run SELECT
commands using JOIN
and USING
in both phpMyAdmin and in Terminal (command line), and the ones in phpMyAdmin produce some baffling responses:
1) a LIMIT
clause at the end appears to be ignored.
2) the supposed number of rows as reported at the top of the page with the results is sometimes wrong: for example 4 are returned, but at the top it says "Showing rows 0 - 24 (2503 total, Query took 0.0018 seconds.)"
Logging on to mysql normally and running the same queries does not produce these errors. Nor do these errors occur when running the same query in phpMyAdmin using JOIN ... ON ...
. Presumably a phpMyAdmin bug.
pip install
the file.import scipy
; it worked for me with no errors.There's a free Java API called JFreeWebSearch which uses the already mentioned Faroo: http://www.ke.tu-darmstadt.de/resources/jfreewebsearch
For the most updated version 2.71828 These are your answer.
Q1: Does it not have local disk cache?
A1: There is default caching within Picasso and the request flow just like this
App -> Memory -> Disk -> Server
Wherever they met their image first, they'll use that image and then stop the request flow. What about response flow? Don't worry, here it is.
Server -> Disk -> Memory -> App
By default, they will store into a local disk first for the extended keeping cache. Then the memory, for the instance usage of the cache.
You can use the built-in indicator in Picasso to see where images form by enabling this.
Picasso.get().setIndicatorEnabled(true);
It will show up a flag on the top left corner of your pictures.
Q2: How do I enable disk caching as I will be using the same image multiple times?
A2: You don't have to enable it. It's the default.
What you'll need to do is DISABLE it when you want your images always fresh. There is 2-way of disabled caching.
.memoryPolicy()
to NO_CACHE and/or NO_STORE and the flow will look like this.NO_CACHE will skip looking up images from memory.
App -> Disk -> Server
NO_STORE will skip store images in memory when the first load images.
Server -> Disk -> App
.networkPolicy()
to NO_CACHE and/or NO_STORE and the flow will look like this.NO_CACHE will skip looking up images from disk.
App -> Memory -> Server
NO_STORE will skip store images in the disk when the first load images.
Server -> Memory -> App
You can DISABLE neither for fully no caching images. Here is an example.
Picasso.get().load(imageUrl)
.memoryPolicy(MemoryPolicy.NO_CACHE,MemoryPolicy.NO_STORE)
.networkPolicy(NetworkPolicy.NO_CACHE, NetworkPolicy.NO_STORE)
.fit().into(banner);
The flow of fully no caching and no storing will look like this.
App -> Server //Request
Server -> App //Response
So, you may need this to minify your app storage usage also.
Q3: Do I need to add some disk permission to android manifest file?
A3: No, but don't forget to add the INTERNET permission for your HTTP request.
The easy way to fix this is to add this to your form.
{{ csrf_field() }}
<input type="hidden" name="_method" value="PUT">
then the update method will be like this :
public function update(Request $request, $id)
{
$project = Project::findOrFail($id);
$project->name = $request->name;
$project->description = $request->description;
$post->save();
}
Install ActivePython. It includes pip, virtualenv and Distribute.
Just Remove the type="text/javascript"
<script src="JavaScript/jquery.js" />
<script src="JavaScript/bootstrap-min.js" />
Here is the update - http://jsfiddle.net/andieje/kRX6n/
The docs are pretty clear that you pass in a second parameter to specify granularity.
If you want to limit the granularity to a unit other than milliseconds, pass the units as the second parameter.
moment('2010-10-20').isAfter('2010-01-01', 'year'); // false moment('2010-10-20').isAfter('2009-12-31', 'year'); // true
As the second parameter determines the precision, and not just a single value to check, using day will check for year, month and day.
For your case you would pass 'day'
as the second parameter.
Make sure you rename ApplicationId in gradle file after rename your package
Ran into the same issue and researched this for a few minutes.
I was taught to use Windows 3.1 and DOS, remember those days? Shortly after I worked with Macintosh computers strictly for some time, then began to sway back to Windows after buying a x64-bit machine.
There are actual reasons behind these changes (some would say historical significance), that are necessary for programmers to continue their work.
Most of the changes are mentioned above:
Program Files
vs Program Files (x86)
In the beginning the 16/86bit files were written on, '86' Intel processors.
System32
really means System64
(on 64-bit Windows)
When developers first started working with Windows7, there were several compatibility issues where other applications where stored.
SysWOW64
really means SysWOW32
Essentially, in plain english, it means 'Windows on Windows within a 64-bit machine'. Each folder is indicating where the DLLs are located for applications it they wish to use them.
Here are two links with all the basic info you need:
Hope this clears things up!
Your JSON object in this case is a list. JSON is almost always an object with attributes; a set of one or more key:value pairs, so you most likely see a dictionary:
{ "MyStringArray" : ["somestring1", "somestring2"] }
then you can ask for the value of "MyStringArray"
and you would get back a list of two strings, "somestring1"
and "somestring2"
.
SELECT name, phone_number FROM Call a
WHERE a.phone_number NOT IN (SELECT b.phone_number FROM Phone_book b)
You seem to be unnecessarily setting properties on your ComboBox
. You can remove the DisplayMemberPath
and SelectedValuePath
properties which have different uses. It might be an idea for you to take a look at the Difference between SelectedItem, SelectedValue and SelectedValuePath post here for an explanation of these properties. Try this:
<ComboBox Name="cbxSalesPeriods"
ItemsSource="{Binding SalesPeriods}"
SelectedItem="{Binding SelectedSalesPeriod}"
IsSynchronizedWithCurrentItem="True"/>
Furthermore, it is pointless using your displayPeriod
property, as the WPF Framework would call the ToString
method automatically for objects that it needs to display that don't have a DataTemplate
set up for them explicitly.
UPDATE >>>
As I can't see all of your code, I cannot tell you what you are doing wrong. Instead, all I can do is to provide you with a complete working example of how to achieve what you want. I've removed the pointless displayPeriod
property and also your SalesPeriodVO
property from your class as I know nothing about it... maybe that is the cause of your problem??. Try this:
public class SalesPeriodV
{
private int month, year;
public int Year
{
get { return year; }
set
{
if (year != value)
{
year = value;
NotifyPropertyChanged("Year");
}
}
}
public int Month
{
get { return month; }
set
{
if (month != value)
{
month = value;
NotifyPropertyChanged("Month");
}
}
}
public override string ToString()
{
return String.Format("{0:D2}.{1}", Month, Year);
}
public virtual event PropertyChangedEventHandler PropertyChanged;
protected virtual void NotifyPropertyChanged(params string[] propertyNames)
{
if (PropertyChanged != null)
{
foreach (string propertyName in propertyNames) PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
PropertyChanged(this, new PropertyChangedEventArgs("HasError"));
}
}
}
Then I added two properties into the view model:
private ObservableCollection<SalesPeriodV> salesPeriods = new ObservableCollection<SalesPeriodV>();
public ObservableCollection<SalesPeriodV> SalesPeriods
{
get { return salesPeriods; }
set { salesPeriods = value; NotifyPropertyChanged("SalesPeriods"); }
}
private SalesPeriodV selectedItem = new SalesPeriodV();
public SalesPeriodV SelectedItem
{
get { return selectedItem; }
set { selectedItem = value; NotifyPropertyChanged("SelectedItem"); }
}
Then initialised the collection with your values:
SalesPeriods.Add(new SalesPeriodV() { Month = 3, Year = 2013 } );
SalesPeriods.Add(new SalesPeriodV() { Month = 4, Year = 2013 } );
And then data bound only these two properties to a ComboBox
:
<ComboBox ItemsSource="{Binding SalesPeriods}" SelectedItem="{Binding SelectedItem}" />
That's it... that's all you need for a perfectly working example. You should see that the display of the items comes from the ToString
method without your displayPeriod
property. Hopefully, you can work out your mistakes from this code example.
You may use DateDiff
and compare by day.
DateDiff(dd,@date1,@date2) > 0
It means @date2 > @date1
For example :
select DateDiff(dd, '01/01/2021 10:20:00', '02/01/2021 10:20:00')
has the result : 1
Use jackson-bom which will have all the three jackson versions.i.e.jackson-annotations, jackson-core and jackson-databind. This will resolve the dependencies related to those versions
/var/lib/postgresql/[version]/data/
At least in Gentoo Linux and Ubuntu 14.04 by default.
You can find postgresql.conf
and look at param data_directory
. If it is commented then database directory is the same as this config file directory.
You can stash
(save the changes in temporary box) then, back to master
branch HEAD.
$ git add .
$ git stash
$ git checkout master
Jump Over Commits Back and Forth:
Go to a specific commit-sha
.
$ git checkout <commit-sha>
If you have uncommitted changes here then, you can checkout to a new branch | Add | Commit | Push the current branch to the remote.
# checkout a new branch, add, commit, push
$ git checkout -b <branch-name>
$ git add .
$ git commit -m 'Commit message'
$ git push origin HEAD # push the current branch to remote
$ git checkout master # back to master branch now
If you have changes in the specific commit and don't want to keep the changes, you can do stash
or reset
then checkout to master
(or, any other branch).
# stash
$ git add -A
$ git stash
$ git checkout master
# reset
$ git reset --hard HEAD
$ git checkout master
After checking out a specific commit if you have no uncommitted change(s) then, just back to master
or other
branch.
$ git status # see the changes
$ git checkout master
# or, shortcut
$ git checkout - # back to the previous state
As a workaround to force the evaluation of the SELECT clause before the WHERE clause, you could put the former in a sub-query while the latter remains in the main query:
SELECT * FROM (
SELECT (InvoiceTotal - PaymentTotal - CreditTotal) AS BalanceDue
FROM Invoices) AS temp
WHERE BalanceDue > 0
Or a nested List (okay, the OP was for a single column and this is for multiple columns..):
//Base list is a list of fields, ie a data record
//Enclosing list is then a list of those records, ie the Result set
List<List<String>> ResultSet = new List<List<String>>();
using (SqlConnection connection =
new SqlConnection(connectionString))
{
// Create the Command and Parameter objects.
SqlCommand command = new SqlCommand(qString, connection);
// Create and execute the DataReader..
connection.Open();
SqlDataReader reader = command.ExecuteReader();
while (reader.Read())
{
var rec = new List<string>();
for (int i = 0; i <= reader.FieldCount-1; i++) //The mathematical formula for reading the next fields must be <=
{
rec.Add(reader.GetString(i));
}
ResultSet.Add(rec);
}
}
PHP by itself has no SMS module or functions and doesn't allow you to send SMS.
SMS ( Short Messaging System) is a GSM technology an you need a GSM provider that will provide this service for you and may have an PHP API implementation for it.
Usually people in telecom business use Asterisk to handle calls and sms programming.
If you are using Rails there's also remove
.
E.g. "Testmessage".remove("message")
yields "Test"
.
Warning: this method removes all occurrences
You can get value like this
this.form.controls['your form control name'].value
I wanted to upvote and comment on jmbertucci's answer, but I'm not yet to be trusted with the controls. I had the same issue and resolved it as he said. If you are using Bootstrap 3.0, edit the LESS variables in variables.less The responsive break points are set around line 200:
@screen-xs: 480px;
@screen-phone: @screen-xs;
// Small screen / tablet
@screen-sm: 768px;
@screen-tablet: @screen-sm;
// Medium screen / desktop
@screen-md: 992px;
@screen-desktop: @screen-md;
// Large screen / wide desktop
@screen-lg: 1200px;
@screen-lg-desktop: @screen-lg;
// So media queries don't overlap when required, provide a maximum
@screen-xs-max: (@screen-sm - 1);
@screen-sm-max: (@screen-md - 1);
@screen-md-max: (@screen-lg - 1);
Then set the collapse value for the navbar using the @grid-float-breakpoint variable at about line 232. By default it's set to @screen-tablet . If you want you can use a pixel value, but I prefer to use the LESS variables.
Or, if you want to see output in the Output window of Visual Studio, System.Diagnostics.Debug.WriteLine(stuff)
"Add a reference to MySql.Data.dll" means you need to add a library reference to the downloaded connector. The IDE will link the database connection library with your application when it compiles.
I downloaded the binary (no installer) zip package from the MySQL web site, extracted onto the desktop, and did the following:
using MySql.Data.MySqlClient;
. If you've added the reference correctly, IntelliSense should offer to complete this for you.add_index :table_name, :column_name, unique: true
To index multiple columns together, you pass an array of column names instead of a single column name.
With recent versions of artifactory, you can query this through the api.
If you have a maven artifact with 2 snapshots
name => 'com.acme.derp'
version => 0.1.0
repo name => 'foo'
snapshot 1 => derp-0.1.0-20161121.183847-3.jar
snapshot 2 => derp-0.1.0-20161122.00000-0.jar
Then the full paths would be
and
You would fetch the latest like so:
curl https://artifactory.example.com/artifactory/foo/com/acme/derp/0.1.0-SNAPSHOT/derp-0.1.0-SNAPSHOT.jar
The accepted answer is too long, other answers didn't work for me. I'm gonna leave this for future purpose.
Dim sKey, bFound
skey = "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SecurityHealth"
with CreateObject("WScript.Shell")
on error resume next ' turn off error trapping
sValue = .regread(sKey) ' read attempt
bFound = (err.number = 0) ' test for success
on error goto 0 ' restore error trapping
end with
If bFound Then
MsgBox = "Registry Key Exist."
Else
MsgBox = "Nope, it doesn't exist."
End If
Here's the list of the Registry Tree, choose your own base on your current task.
HKCR = HKEY_CLASSES_ROOT
HKCU = HKEY_CURRENT_USER
HKLM = HKEY_LOCAL_MACHINE
HKUS = HKEY_USERS
HKCC = HKEY_CURRENT_CONFIG
The data series names are defined by the column headers. Add the names to the column headers that you would like to use as titles for each of your data series, select all of the data (including the headers), then re-generate your graph. The names in the headers should then appear as the names in the legend for each series.
I was getting the exact same error, however I solved it by running $false
first and then $true
.
you can add this property globally in javascript:
if( navigator.userAgent.match(/iPhone|iPad|iPod/i) ) {
var styleEl = document.createElement('style'), styleSheet;
document.head.appendChild(styleEl);
styleSheet = styleEl.sheet;
styleSheet.insertRule(".modal { position:absolute; bottom:auto; }", 0);
}
Get a list of number as input from the user.
This can be done by using list in python.
L=list(map(int,input(),split()))
Here L indicates list, map is used to map input with the position, int specifies the datatype of the user input which is in integer datatype, and split() is used to split the number based on space.
.
You should use DateTime.TryParseExcact
if you know the format, or if not and want to use the system settings DateTime.TryParse
. And to print the date,DateTime.ToString
with the right format in the argument. To get the year, month or day you have DateTime.Year
, DateTime.Month
or DateTime.Day
.
See DateTime Structures in MSDN for additional references.
Android Context has the following method:
public abstract boolean deleteFile (String name)
I believe this will do what you want with the right App premissions as listed above.
$rand = rand(1,4);
or, for arrays specifically:
$array = array('a value', 'another value', 'just some value', 'not some value');
$rand = $array[ rand(0, count($array)-1) ];
with T1 as
(
select row_number() over(order by ID) rownum, T2.ID
from Table2 T2
)
select ID
from T1
where rownum=2
Creating colnames with iterating
df = pd.DataFrame(columns=['colname_' + str(i) for i in range(5)])
print(df)
# Empty DataFrame
# Columns: [colname_0, colname_1, colname_2, colname_3, colname_4]
# Index: []
to_html()
operations
print(df.to_html())
# <table border="1" class="dataframe">
# <thead>
# <tr style="text-align: right;">
# <th></th>
# <th>colname_0</th>
# <th>colname_1</th>
# <th>colname_2</th>
# <th>colname_3</th>
# <th>colname_4</th>
# </tr>
# </thead>
# <tbody>
# </tbody>
# </table>
this seems working
print(type(df.to_html()))
# <class 'str'>
when you create df like this
df = pd.DataFrame(columns=COLUMN_NAMES)
it has 0 rows × n columns
, you need to create at least one row index by
df = pd.DataFrame(columns=COLUMN_NAMES, index=[0])
now it has 1 rows × n columns
. You are be able to add data. Otherwise its df that only consist colnames object(like a string list).
UK Government Data Standards Catalogue details the UK standards for this kind of thing. It suggests 35 characters for each of Given Name and Family Name, or 70 characters for a single field to hold the Full Name, and 255 characters for an email address. Amongst other things..
I usually use these utility functions. element
is the HTML element and duration
is the desired duration in milliseconds.
export const fadeIn = (element, duration) => {
(function increment(value = 0) {
element.style.opacity = String(value);
if (element.style.opacity !== '1') {
setTimeout(() => {
increment(value + 0.1);
}, duration / 10);
}
})();
};
export const fadeOut = (element, duration) => {
(function decrement() {
(element.style.opacity -= 0.1) < 0 ? element.style.display = 'none' : setTimeout(() => {
decrement();
}, duration / 10);
})();
};
Try the following:
javac file1.java file2.java
you have to tell angular
that you updated the content after ngAfterContentChecked
you can import ChangeDetectorRef
from @angular/core
and call detectChanges
import {ChangeDetectorRef } from '@angular/core';
constructor( private cdref: ChangeDetectorRef ) {}
ngAfterContentChecked() {
this.sampleViewModel.DataContext = this.DataContext;
this.sampleViewModel.Position = this.Position;
this.cdref.detectChanges();
}
You can do it like this:
In your main view controller:
func showModal() {
let modalViewController = ModalViewController()
modalViewController.modalPresentationStyle = .overCurrentContext
presentViewController(modalViewController, animated: true, completion: nil)
}
In your modal view controller:
class ModalViewController: UIViewController {
override func viewDidLoad() {
view.backgroundColor = UIColor.clearColor()
view.opaque = false
}
}
If you are working with a storyboard:
Just add a Storyboard Segue with Kind
set to Present Modally
to your modal view controller and on this view controller set the following values:
As Crashalot pointed out in his comment: Make sure the segue only uses Default
for both Presentation
and Transition
. Using Current Context
for Presentation
makes the modal turn black instead of remaining transparent.
I will rather recommend Mage2Gen, this will help you generate the boilerplate and you can just focus on the core business logic. it just helps speed up the things.
wget -L (exact copied link)
blob
to raw
in step 2What is your polynomial? If you're "processing" it, I'm envisioning some sort of tree of sub-expressions being generated at some point, and would think that it would be much simpler to use that to generate your string than to re-parse the raw expression with a regex.
Just throwing a different way of thinking out there. I'm not sure what else is going on in your app.
I believe VirtualBox is throwing this error for a number of reasons. Very annoying that it's one error for so many things but, I guess it's the same requirement it's just that the root cause is different.
Potential gotchas:
So for my little mess around machine that I'm resurrecting that has 8GB RAM but only a ye-olde Core i3, I'm having success if I install: 32 bit version of linux, allocating 2.5GB RAM.
Oh, and wherever I say "VT-x" above, that obviously applies equally to AMD's "AMD-V" virtualization tech.
I hope that helps.
First off, I think mplot3D
worked a bit differently in matplotlib
version 0.99
than it does in the current version of matplotlib
.
Which version are you using? (Try running: python -c 'import matplotlib; print matplotlib."__version__")
I'm guessing you're running version 0.99
, in which case you'll need to either use a slightly different syntax or update to a more recent version of matplotlib
.
If you're running version 0.99
, try doing this instead of using using the projection
keyword argument:
import matplotlib.pyplot as plt
from mpl_toolkits.mplot3d import axes3d, Axes3D #<-- Note the capitalization!
fig = plt.figure()
ax = Axes3D(fig) #<-- Note the difference from your original code...
X, Y, Z = axes3d.get_test_data(0.05)
cset = ax.contour(X, Y, Z, 16, extend3d=True)
ax.clabel(cset, fontsize=9, inline=1)
plt.show()
This should work in matplotlib
1.0.x
, as well, not just 0.99
.
I'm using Visual Studio 2017 Community Edition.
I solved this problem by making a directory called tessdata in the Debug directory of my project. Then I put the eng.traineddata file into said directory.
Here's how I do it with Express.js:
1) Check if the user is authenticated: I have a middleware function named CheckAuth which I use on every route that needs the user to be authenticated:
function checkAuth(req, res, next) {
if (!req.session.user_id) {
res.send('You are not authorized to view this page');
} else {
next();
}
}
I use this function in my routes like this:
app.get('/my_secret_page', checkAuth, function (req, res) {
res.send('if you are viewing this page it means you are logged in');
});
2) The login route:
app.post('/login', function (req, res) {
var post = req.body;
if (post.user === 'john' && post.password === 'johnspassword') {
req.session.user_id = johns_user_id_here;
res.redirect('/my_secret_page');
} else {
res.send('Bad user/pass');
}
});
3) The logout route:
app.get('/logout', function (req, res) {
delete req.session.user_id;
res.redirect('/login');
});
If you want to learn more about Express.js check their site here: expressjs.com/en/guide/routing.html If there's need for more complex stuff, checkout everyauth (it has a lot of auth methods available, for facebook, twitter etc; good tutorial on it here).
To remove cached .idea/ directory.
e.g. git rm -r --cached .idea
Essentially it means you don't have the index you are trying to reference. For example:
df = pd.DataFrame()
df['this']=np.nan
df['my']=np.nan
df['data']=np.nan
df['data'][0]=5 #I haven't yet assigned how long df[data] should be!
print(df)
will give me the error you are referring to, because I haven't told Pandas how long my dataframe is. Whereas if I do the exact same code but I DO assign an index length, I don't get an error:
df = pd.DataFrame(index=[0,1,2,3,4])
df['this']=np.nan
df['is']=np.nan
df['my']=np.nan
df['data']=np.nan
df['data'][0]=5 #since I've properly labelled my index, I don't run into this problem!
print(df)
Hope that answers your question!
I had such an error in this case:
java -cp lib.jar com.mypackage.Main
It works with ;
for Windows and :
for Unix:
java -cp lib.jar; com.mypackage.Main
int main () //start of main fcn
{
int values[ 20 ]; //delcares array and how many elements
int small,big; //declares integer
for ( int i = 0; i < 20; i++ ) //counts to 20 and prompts user for value and stores it
{
cout << "Enter value " << i << ": ";
cin >> values[i];
}
big=small=values[0]; //assigns element to be highest or lowest value
for (int i = 0; i < 20; i++) //works out bigggest number
{
if(values[i]>big) //compare biggest value with current element
{
big=values[i];
}
if(values[i]<small) //compares smallest value with current element
{
small=values[i];
}
}
cout << "The biggest number is " << big << endl; //prints outs biggest no
cout << "The smallest number is " << small << endl; //prints out smalles no
}
Unfortunately none of these solutions solve the problem of "OR" operator "cond1 || cond2".
Use "^" (or) and check if otherwise cond2 is true
{{#if cond1}} DO THE ACTION {{^}} {{#if cond2}} DO THE ACTION {{/if}} {{/if}}
It breaks DRY rule. So why not use partial to make it less messy
{{#if cond1}}
{{> subTemplate}}
{{^}}
{{#if cond2}}
{{> subTemplate}}
{{/if}}
{{/if}}
1.Install Android studio. 2.Launch AVD Manager 3.Verify environment variable in set properly based on OS(.bash_profile in mac and environment Variable in windows) 4. launch emulator 5. verify via adb devices command. 6.use adb install apkFileName.apk
You need to call tf.global_variables_initializer()
on you session, like
init = tf.global_variables_initializer()
sess.run(init)
Full example is available in this great tutorial https://www.tensorflow.org/get_started/mnist/mechanics
There are many ways to get jQuery AJAX response. I am sharing with you two common approaches:
First:
use async=false and within function return ajax-object and later get response ajax-object.responseText
/**
* jQuery ajax method with async = false, to return response
* @param {mix} selector - your selector
* @return {mix} - your ajax response/error
*/
function isSession(selector) {
return $.ajax({
type: "POST",
url: '/order.html',
data: {
issession: 1,
selector: selector
},
dataType: "html",
async: !1,
error: function() {
alert("Error occured")
}
});
}
// global param
var selector = !0;
// get return ajax object
var ajaxObj = isSession(selector);
// store ajax response in var
var ajaxResponse = ajaxObj.responseText;
// check ajax response
console.log(ajaxResponse);
// your ajax callback function for success
ajaxObj.success(function(response) {
alert(response);
});
Second:
use $.extend method and make a new function like ajax
/**
* xResponse function
*
* xResponse method is made to return jQuery ajax response
*
* @param {string} url [your url or file]
* @param {object} your ajax param
* @return {mix} [ajax response]
*/
$.extend({
xResponse: function(url, data) {
// local var
var theResponse = null;
// jQuery ajax
$.ajax({
url: url,
type: 'POST',
data: data,
dataType: "html",
async: false,
success: function(respText) {
theResponse = respText;
}
});
// Return the response text
return theResponse;
}
});
// set ajax response in var
var xData = $.xResponse('temp.html', {issession: 1,selector: true});
// see response in console
console.log(xData);
you can make it as large as you want...
Here are a few general tips for you:
You can use foreach
on types that implement IEnumerable
. IList
is essentially an IEnumberable
with Count
and Item
(accessing items using a zero-based index) properties. IDictionary
on the other hand means you can access items by any-hashable index.
Array
, ArrayList
and List
all implement IList
.
Dictionary
, SortedDictionary
, and Hashtable
implement IDictionary
.
If you are using .NET 2.0 or higher, it is recommended that you use generic counterparts of mentioned types.
For time and space complexity of various operations on these types, you should consult their documentation.
.NET data structures are in System.Collections
namespace. There are type libraries such as PowerCollections which offer additional data structures.
To get a thorough understanding of data structures, consult resources such as CLRS.
"Just because you send an email doesn't mean it will arrive."
Sending mail is Serious Business - e.g. the domain you're using as your "From:" address may be configured to reject e-mails from your webserver. For a longer overview (and some tips what to check), see http://www.codinghorror.com/blog/2010/04/so-youd-like-to-send-some-email-through-code.html
You should capitalize names of your classes. After doing that do this in your school class,
Classroom cls = new Classroom();
cls.setTeacherName(newTeacherName);
Also I'd recommend you use some kind of IDE such as eclipse, which can help you with your code for instance generate getters and setters for you. Ex: right click Source -> Generate getters and setters
Just to keep flogging this particular dead horse- we've had good use of numeric error codes when errors are shown to end-customers, since they frequently forget or misread the actual error message but may sometimes retain and report a numeric value that can give you a clue to what actually happened.
I changed all space areas to  , just like that and it worked without problem.
val.replace(" ", " ");
I hope it helps someone.
I doubt it. The problem is that 100 is never 100 if it's a float, it's normally 99.9999999999 or 100.0000001 or something like that.
If you do want to format it that way, you have to define an epsilon, that is, a maximum distance from an integer number, and use integer formatting if the difference is smaller, and a float otherwise.
Something like this would do the trick:
public String formatDecimal(float number) {
float epsilon = 0.004f; // 4 tenths of a cent
if (Math.abs(Math.round(number) - number) < epsilon) {
return String.format("%10.0f", number); // sdb
} else {
return String.format("%10.2f", number); // dj_segfault
}
}
Use the error callback.
For example:
jQuery.ajax({'url': '/this_is_not_found', data: {}, error: function(xhr, status) {
alert(xhr.status); }
});
Will alert 404
Didn't see any answers correctly using DATE_ADD
or DATE_SUB
:
Subtract 1 day from NOW()
...WHERE DATE_FIELD >= DATE_SUB(NOW(), INTERVAL 1 DAY)
Add 1 day from NOW()
...WHERE DATE_FIELD >= DATE_ADD(NOW(), INTERVAL 1 DAY)
Use the HEREDOC syntax. You can mix single and double quotes, variables and even function calls with unaltered / unescaped html markup.
echo <<<MYTAG
<tr><td> <input type="hidden" name="type" value="$var1" ></td></tr>
<tr><td> <input type="hidden" name="type" value="$var2" ></td></tr>
<tr><td> <input type="hidden" name="type" value="$var3" ></td></tr>
<tr><td> <input type="hidden" name="type" value="$var4" ></td></tr>
MYTAG;
I had a same problem with scrolling in chrome. So i removed this lines of codes from my style file.
html{height:100%;}
body{height:100%;}
Now i can play with scroll and it works:
var pos = 500;
$("html,body").animate({ scrollTop: pos }, "slow");
I wrote a shell function for a similar use case I encounter daily on projects. This is basically a shortcut for keeping local branches up to date with a common branch like develop before opening a PR, etc.
Posting this even though you don't want to use
checkout
, in case others don't mind that constraint.
glmh
("git pull and merge here") will automatically checkout branchB
, pull
the latest, re-checkout branchA
, and merge branchB
.
Doesn't address the need to keep a local copy of branchA, but could easily be modified to do so by adding a step before checking out branchB. Something like...
git branch ${branchA}-no-branchB ${branchA}
For simple fast-forward merges, this skips to the commit message prompt.
For non fast-forward merges, this places your branch in the conflict resolution state (you likely need to intervene).
.bashrc
or .zshrc
, etc:glmh() {
branchB=$1
[ $# -eq 0 ] && { branchB="develop" }
branchA="$(git branch | grep '*' | sed 's/* //g')"
git checkout ${branchB} && git pull
git checkout ${branchA} && git merge ${branchB}
}
# No argument given, will assume "develop"
> glmh
# Pass an argument to pull and merge a specific branch
> glmh your-other-branch
Note: This is not robust enough to hand-off of args beyond branch name to
git merge
You can even use this one. worked well for me
$("#registerform").attr("action", "register.php?btnsubmit=Save")
$('#registerform').submit();
this will submit btnsubmit =Save as GET value to register.php form.