It is working with me in Oracle sql developer
SELECT add_months(trunc(sysdate,'mm'), -1),
last_day(add_months(trunc(sysdate,'mm'), -1))
FROM dual
Jason Bunting's answer gave me enough of a clue to find what I needed:
<<Object instance>>.constructor.name
So, for example, in the following piece of code:
function MyObject() {}
var myInstance = new MyObject();
myInstance.constructor.name
would return "MyObject"
.
str()
is the equivalent.
However you should be filtering your query. At the moment your query is all()
Todo's.
todos = Todo.all().filter('author = ', users.get_current_user().nickname())
or
todos = Todo.all().filter('author = ', users.get_current_user())
depending on what you are defining author as in the Todo model. A StringProperty
or UserProperty
.
Note nickname
is a method. You are passing the method and not the result in template values.
ButterKnife is probably the best solution for the clutter problem. It uses annotation processors to generate the so called "old method" boilerplate code.
But the onClick method can still be used, with a custom inflator.
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup cnt, Bundle state) {
inflater = FragmentInflatorFactory.inflatorFor(inflater, this);
return inflater.inflate(R.layout.fragment_main, cnt, false);
}
public class FragmentInflatorFactory implements LayoutInflater.Factory {
private static final int[] sWantedAttrs = { android.R.attr.onClick };
private static final Method sOnCreateViewMethod;
static {
// We could duplicate its functionallity.. or just ignore its a protected method.
try {
Method method = LayoutInflater.class.getDeclaredMethod(
"onCreateView", String.class, AttributeSet.class);
method.setAccessible(true);
sOnCreateViewMethod = method;
} catch (NoSuchMethodException e) {
// Public API: Should not happen.
throw new RuntimeException(e);
}
}
private final LayoutInflater mInflator;
private final Object mFragment;
public FragmentInflatorFactory(LayoutInflater delegate, Object fragment) {
if (delegate == null || fragment == null) {
throw new NullPointerException();
}
mInflator = delegate;
mFragment = fragment;
}
public static LayoutInflater inflatorFor(LayoutInflater original, Object fragment) {
LayoutInflater inflator = original.cloneInContext(original.getContext());
FragmentInflatorFactory factory = new FragmentInflatorFactory(inflator, fragment);
inflator.setFactory(factory);
return inflator;
}
@Override
public View onCreateView(String name, Context context, AttributeSet attrs) {
if ("fragment".equals(name)) {
// Let the Activity ("private factory") handle it
return null;
}
View view = null;
if (name.indexOf('.') == -1) {
try {
view = (View) sOnCreateViewMethod.invoke(mInflator, name, attrs);
} catch (IllegalAccessException e) {
throw new AssertionError(e);
} catch (InvocationTargetException e) {
if (e.getCause() instanceof ClassNotFoundException) {
return null;
}
throw new RuntimeException(e);
}
} else {
try {
view = mInflator.createView(name, null, attrs);
} catch (ClassNotFoundException e) {
return null;
}
}
TypedArray a = context.obtainStyledAttributes(attrs, sWantedAttrs);
String methodName = a.getString(0);
a.recycle();
if (methodName != null) {
view.setOnClickListener(new FragmentClickListener(mFragment, methodName));
}
return view;
}
private static class FragmentClickListener implements OnClickListener {
private final Object mFragment;
private final String mMethodName;
private Method mMethod;
public FragmentClickListener(Object fragment, String methodName) {
mFragment = fragment;
mMethodName = methodName;
}
@Override
public void onClick(View v) {
if (mMethod == null) {
Class<?> clazz = mFragment.getClass();
try {
mMethod = clazz.getMethod(mMethodName, View.class);
} catch (NoSuchMethodException e) {
throw new IllegalStateException(
"Cannot find public method " + mMethodName + "(View) on "
+ clazz + " for onClick");
}
}
try {
mMethod.invoke(mFragment, v);
} catch (InvocationTargetException e) {
throw new RuntimeException(e);
} catch (IllegalAccessException e) {
throw new AssertionError(e);
}
}
}
}
I just made this at freecodecamp. It can easily be expanded.
function convertToRoman(num) {
var roman ="";
var values = [1000,900,500,400,100,90,50,40,10,9,5,4,1];
var literals = ["M","CM","D","CD","C","XC","L","XL","X","IX","V","IV","I"];
for(i=0;i<values.length;i++){
if(num>=values[i]){
if(5<=num && num<=8) num -= 5;
else if(1<=num && num<=3) num -= 1;
else num -= values[i];
roman += literals[i];
i--;
}
}
return roman;
}
If you have a std::wstring object, you can call c_str()
on it to get a wchar_t*
:
std::wstring name( L"Steve Nash" );
const wchar_t* szName = name.c_str();
Since you are operating on a narrow string, however, you would first need to widen it. There are various options here; one is to use Windows' built-in MultiByteToWideChar
routine. That will give you an LPWSTR
, which is equivalent to wchar_t*
.
As the default configuration of Postgres, a user called postgres is made and the user postgres has full super admin access to entire PostgreSQL instance running on your OS.
sudo -u postgres psql
The above command gets you the psql command line interface in admin mode.
Creating user
sudo -u postgres createuser <username>
Creating Database
sudo -u postgres createdb <dbname>
NOTE: < > are not to be used while writing command, they are used just to signify the variables
127.0.0.1 always points to localhost. On your home network you should have an IP address assigned by your internet router (dsl/cablemodem/whatever). You need to bind your website to this address. You should then be able to use the machine name to get to the website, but I would recommend actually editing the hosts file of the client computer in question to point a specific name at that computer. The hosts file can be found at c:\windows\system32\drivers\etc\hosts (use notepad) and the entry would look like:
192.168.1.1 mycomputername
Talk is cheap, show you the code:
>>> tup = (10, 20, 30)
>>> i = 50
>>> print '%d %s'%(i,tup)
50 (10, 20, 30)
>>> print '%s'%(tup,)
(10, 20, 30)
>>>
if my_list is the list that you want to store your objects in it and my_object is your object wanted to be stored, use this structure:
my_list.append(my_object)
This is a JQuery code for Preventing Submit
$('form').submit(function (e) {
if (radioButtonValue !== "0") {
e.preventDefault();
}
});
You can try below Procedure Sql:
Create Procedure sp_ADD_USER_EXTRANET_CLIENT_INDEX_PHY
(
@ParLngId int output
)
as
Begin
-- Min will return only 1 value, if 'Extranet Client' is found
-- IsNull will take care of 'Extranet Client' not found, returning 0 instead of Null
-- But T_Param must be a Master Table with ParStrNom having a Unique Index, if so Min is not reqd at all
-- But 'PHY', 'Extranet Client' suggests that Unique Key has 2 columns, not just ParStrNom
SET @ParLngId = IsNull((Select Min (ParLngId) from T_Param where ParStrNom = 'Extranet Client'), 0);
-- Nothing changed below
if (@ParLngId = 0)
Begin
Insert Into T_Param values ('PHY', 'Extranet Client', Null, Null, 'T', 0, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, 1, NULL, NULL, NULL)
SET @ParLngId = @@IDENTITY
End
Return @ParLngId
End
I would use this:
SELECT Closing_Date = DATEADD(MONTH, DATEDIFF(MONTH, 0, Closing_Date), 0),
Category,
COUNT(Status) TotalCount
FROM MyTable
WHERE Closing_Date >= '2012-02-01'
AND Closing_Date <= '2012-12-31'
AND Defect_Status1 IS NOT NULL
GROUP BY DATEADD(MONTH, DATEDIFF(MONTH, 0, Closing_Date), 0), Category;
This will group by the first of every month, so
`DATEADD(MONTH, DATEDIFF(MONTH, 0, '20130128'), 0)`
will give '20130101'
. I generally prefer this method as it keeps dates as dates.
Alternatively you could use something like this:
SELECT Closing_Year = DATEPART(YEAR, Closing_Date),
Closing_Month = DATEPART(MONTH, Closing_Date),
Category,
COUNT(Status) TotalCount
FROM MyTable
WHERE Closing_Date >= '2012-02-01'
AND Closing_Date <= '2012-12-31'
AND Defect_Status1 IS NOT NULL
GROUP BY DATEPART(YEAR, Closing_Date), DATEPART(MONTH, Closing_Date), Category;
It really depends what your desired output is. (Closing Year is not necessary in your example, but if the date range crosses a year boundary it may be).
One important point is that Swift's ==
on strings might not be equivalent to Objective-C's -isEqualToString:
. The peculiarity lies in differences in how strings are represented between Swift and Objective-C.
Just look on this example:
let composed = "Ö" // U+00D6 LATIN CAPITAL LETTER O WITH DIAERESIS
let decomposed = composed.decomposedStringWithCanonicalMapping // (U+004F LATIN CAPITAL LETTER O) + (U+0308 COMBINING DIAERESIS)
composed.utf16.count // 1
decomposed.utf16.count // 2
let composedNSString = composed as NSString
let decomposedNSString = decomposed as NSString
decomposed == composed // true, Strings are equal
decomposedNSString == composedNSString // false, NSStrings are not
NSString
's are represented as a sequence of UTF–16 code units (roughly read as an array of UTF-16 (fixed-width) code units). Whereas Swift String
s are conceptually sequences of "Characters", where "Character" is something that abstracts extended grapheme cluster (read Character = any amount of Unicode code points, usually something that the user sees as a character and text input cursor jumps around).
The next thing to mention is Unicode. There is a lot to write about it, but here we are interested in something called "canonical equivalence". Using Unicode code points, visually the same "character" can be encoded in more than one way. For example, "Á" can be represented as a precomposed "Á" or as decomposed A + ?´ (that's why in example composed.utf16
and decomposed.utf16
had different lengths). A good thing to read on that is this great article.
-[NSString isEqualToString:]
, according to the documentation, compares NSStrings code unit by code unit, so:
[Á] != [A, ?´]
Swift's String ==
compares characters by canonical equivalence.
[ [Á] ] == [ [A, ?´] ]
In swift the above example will return true for Strings. That's why -[NSString isEqualToString:]
is not equivalent to Swift's String ==. Equivalent pure Swift comparison could be done by comparing String's UTF-16 Views:
decomposed.utf16.elementsEqual(composed.utf16) // false, UTF-16 code units are not the same
decomposedNSString == composedNSString // false, UTF-16 code units are not the same
decomposedNSString.isEqual(to: composedNSString as String) // false, UTF-16 code units are not the same
Also, there is a difference between NSString == NSString
and String == String
in Swift. The NSString ==
will cause isEqual and UTF-16 code unit by code unit comparison, where as String ==
will use canonical equivalence:
decomposed == composed // true, Strings are equal
decomposed as NSString == composed as NSString // false, UTF-16 code units are not the same
And the whole example:
let composed = "Ö" // U+00D6 LATIN CAPITAL LETTER O WITH DIAERESIS
let decomposed = composed.decomposedStringWithCanonicalMapping // (U+004F LATIN CAPITAL LETTER O) + (U+0308 COMBINING DIAERESIS)
composed.utf16.count // 1
decomposed.utf16.count // 2
let composedNSString = composed as NSString
let decomposedNSString = decomposed as NSString
decomposed == composed // true, Strings are equal
decomposedNSString == composedNSString // false, NSStrings are not
decomposed.utf16.elementsEqual(composed.utf16) // false, UTF-16 code units are not the same
decomposedNSString == composedNSString // false, UTF-16 code units are not the same
decomposedNSString.isEqual(to: composedNSString as String) // false, UTF-16 code units are not the same
f.isFile() && f.canRead()
Though it may be unrelated to your question, take a look at GetGUIThreadInfo Function.
I have just solved this problem. Recently, I changed my language setting of my MacBook from English-UK to Chinese. And I suppose that setting will also change the setting in the "locale." Becuase when I switched back, I found that the setting of locale had been changed again, and I am fine to import the pandas again,.
So if you have changed the language setting recently, you may worth to have a try change it back.
I discovered that this behaviour only occurs after running a particular script, similar to the one in the question. I have no idea why it occurs.
It works (refreshes the graphs) if I put
plt.clf()
plt.cla()
plt.close()
after every plt.show()
A class independent solution
var checkBox = 'input[type="checkbox"]';
if ($(checkBox+':checked').length == $(checkBox).length) {
//Do Something
}
Try the following:
<c:set var="count" value="0" scope="page" />
//in your loops
<c:set var="count" value="${count + 1}" scope="page"/>
I have used mpdf in my project. In Codeigniter-3, putted mpdf files under application/third_party and then used in this way:
/**
* This function is used to display data in PDF file.
* function is using mpdf api to generate pdf.
* @param number $id : This is unique id of table.
*/
function generatePDF($id){
require APPPATH . '/third_party/mpdf/vendor/autoload.php';
//$mpdf=new mPDF();
$mpdf = new mPDF('utf-8', 'Letter', 0, '', 0, 0, 7, 0, 0, 0);
$checkRecords = $this->user_model->getCheckInfo($id);
foreach ($checkRecords as $key => $value) {
$data['info'] = $value;
$filename = $this->load->view(CHEQUE_VIEWS.'index',$data,TRUE);
$mpdf->WriteHTML($filename);
}
$mpdf->Output(); //output pdf document.
//$content = $mpdf->Output('', 'S'); //get pdf document content's as variable.
}
You can select the columns of a groupby:
In [11]: df.groupby(['Country', 'Item_Code'])[["Y1961", "Y1962", "Y1963"]].sum()
Out[11]:
Y1961 Y1962 Y1963
Country Item_Code
Afghanistan 15 10 20 30
25 10 20 30
Angola 15 30 40 50
25 30 40 50
Note that the list passed must be a subset of the columns otherwise you'll see a KeyError.
You need to escape <
and &
. Escaping >
too doesn't hurt:
function magic(input) {
input = input.replace(/&/g, '&');
input = input.replace(/</g, '<');
input = input.replace(/>/g, '>');
return input;
}
Or you let the DOM engine do the dirty work for you (using jQuery because I'm lazy):
function magic(input) {
return $('<span>').text(input).html();
}
What this does is creating a dummy element, assigning your string as its textContent (i.e. no HTML-specific characters have side effects since it's just text) and then you retrieve the HTML content of that element - which is the text but with special characters converted to HTML entities in cases where it's necessary.
Since Git 1.6.1.3 git checkout
has been able to checkout from either side of a merge:
git checkout --theirs _widget.html.erb
Here is a solution worked for me and also, I found all of the above solutions are correct. My excel model got corrupted and which is why my code (similar to this one) stopped working. Here is what worked for me and is working every time-
Try this :
public void addTeacherToClassRoom(classroom myClassRoom, String TeacherName)
{
myClassRoom.setTeacherName(TeacherName);
}
In English:
ContentType
: When sending data to the server, use this content type. Default is application/x-www-form-urlencoded; charset=UTF-8
, which is fine for most cases.Accepts
: The content type sent in the request header that tells the server what kind of response it will accept in return. Depends on DataType
.DataType
: The type of data that you're expecting back from the server. If none is specified, jQuery will try to infer it based on the MIME type of the response. Can be text, xml, html, script, json, jsonp
.I assume you calculated the "depth of 1024" by the recurring lines in the stack trace?
Obviously, the stack trace array length in Throwable seems to be limited to 1024. Try the following program:
public class Test {
public static void main(String[] args) {
try {
System.out.println(fact(1 << 15));
}
catch (StackOverflowError e) {
System.err.println("true recursion level was " + level);
System.err.println("reported recursion level was " +
e.getStackTrace().length);
}
}
private static int level = 0;
public static long fact(int n) {
level++;
return n < 2 ? n : n * fact(n - 1);
}
}
as per the Chart js documentation page tick configuration section. you can format the value of each tick using the callback function. for example I wanted to change locale of displayed dates to be always German. in the ticks parts of the axis options
ticks: {
callback: function(value) {
return new Date(value).toLocaleDateString('de-DE', {month:'short', year:'numeric'});
},
},
Found the code that I referred to in my comment above. To test it, do this:
Sheet1
change the cell height and width of say A1
as shown in the snapshot below. Start Timer
button on the sheet and click on Assign Macros
. Select StartTimer
macro.End Timer
button on the sheet and click on Assign Macros
. Select EndTimer
macro.Now click on Start Timer button and you will see the time getting updated in cell A1
. To stop time updates, Click on End Timer button.
Code (TRIED AND TESTED)
Public Declare Function SetTimer Lib "user32" ( _
ByVal HWnd As Long, ByVal nIDEvent As Long, _
ByVal uElapse As Long, ByVal lpTimerFunc As Long) As Long
Public Declare Function KillTimer Lib "user32" ( _
ByVal HWnd As Long, ByVal nIDEvent As Long) As Long
Public TimerID As Long, TimerSeconds As Single, tim As Boolean
Dim Counter As Long
'~~> Start Timer
Sub StartTimer()
'~~ Set the timer for 1 second
TimerSeconds = 1
TimerID = SetTimer(0&, 0&, TimerSeconds * 1000&, AddressOf TimerProc)
End Sub
'~~> End Timer
Sub EndTimer()
On Error Resume Next
KillTimer 0&, TimerID
End Sub
Sub TimerProc(ByVal HWnd As Long, ByVal uMsg As Long, _
ByVal nIDEvent As Long, ByVal dwTimer As Long)
'~~> Update value in Sheet 1
Sheet1.Range("A1").Value = Time
End Sub
SNAPSHOT
Don't do this use a dictionary
import sys
this = sys.modules[__name__] # this is now your current namespace
for x in range(0,9):
setattr(this, 'string%s' % x, 'Hello')
print string0
print string1
print string2
print string3
print string4
print string5
print string6
print string7
print string8
don't do this use a dict
globals() has risk as it gives you what the namespace is currently pointing to but this can change and so modifying the return from globals() is not a good idea
I had this problem when trying to initialize log4net. I decided to just make a static constructor for the Global.asax
static Global(){
//Do your initialization here statically
}
HTML is intended for structuring data, not controlling layout. CSS is intended to control layout. You'll also find that many designers frown on using <table>
for layouts for this very same reason.
Here are the high-level differences:
There's also the NVL function
In SSMS execute your sql query. From the result window select all cells and copy the values. Goto below website and there you can paste the copied data and generate sql scripts. You can also save results of query from SSMS as CSV file and import the csv file in this website.
Set a width on the form element (which should exist in your example! ) and float (and clear) the input elements. Also, drop the br elements.
There are several issues to note with the answers here:
1) INFORMATION_SCHEMA.TABLES
does not include TEMPORARY tables.
2) Using any type of SHOW
query, i.e. SHOW TABLES LIKE 'test_table'
, will force the return of a resultset to the client, which is undesired behavior for checking if a table exists server-side, from within a stored procedure that also returns a resultset.
3) As some users mentioned, you have to be careful with how you use SELECT 1 FROM test_table LIMIT 1
.
If you do something like:
SET @table_exists = 0;
SET @table_exists = (SELECT 1 FROM test_table LIMIT 1);
You will not get the expected result if the table has zero rows.
Below is a stored procedure that will work for all tables (even TEMPORARY).
It can be used like:
SET @test_table = 'test_table';
SET @test_db = NULL;
SET @does_table_exist = NULL;
CALL DoesTableExist(@test_table, @test_db, @does_table_exist);
SELECT @does_table_exist;
The code:
/*
p_table_name is required
p_database_name is optional
if NULL is given for p_database_name, then it defaults to the currently selected database
p_does_table_exist
The @variable to save the result to
This procedure attempts to
SELECT NULL FROM `p_database_name`.`p_table_name` LIMIT 0;
If [SQLSTATE '42S02'] is raised, then
SET p_does_table_exist = 0
Else
SET p_does_table_exist = 1
Info on SQLSTATE '42S02' at:
https://dev.mysql.com/doc/refman/5.7/en/server-error-reference.html#error_er_no_such_table
*/
DELIMITER $$
DROP PROCEDURE IF EXISTS DoesTableExist
$$
CREATE PROCEDURE DoesTableExist (
IN p_table_name VARCHAR(64),
IN p_database_name VARCHAR(64),
OUT p_does_table_exist TINYINT(1) UNSIGNED
)
BEGIN
/* 793441 is used in this procedure for ensuring that user variables have unique names */
DECLARE EXIT HANDLER FOR SQLSTATE '42S02'
BEGIN
SET p_does_table_exist = 0
;
END
;
IF p_table_name IS NULL THEN
SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = 'DoesTableExist received NULL for p_table_name.';
END IF;
/* redirect resultset to a dummy variable */
SET @test_select_sql_793441 = CONCAT(
"SET @dummy_var_793441 = ("
" SELECT"
" NULL"
" FROM ",
IF(
p_database_name IS NULL,
"",
CONCAT(
"`",
REPLACE(p_database_name, "`", "``"),
"`."
)
),
"`",
REPLACE(p_table_name, "`", "``"),
"`"
" LIMIT 0"
")"
)
;
PREPARE _sql_statement FROM @test_select_sql_793441
;
SET @test_select_sql_793441 = NULL
;
EXECUTE _sql_statement
;
DEALLOCATE PREPARE _sql_statement
;
SET p_does_table_exist = 1
;
END
$$
DELIMITER ;
You want to do what Allain said, however be aware that sometimes the image loads before dom ready, which means your load handler won't fire. The best way is to do as Allain says, but set the src of the image with javascript after attaching the load hander. This way you can guarantee that it fires.
In terms of accessibility, will your site still work for people without javascript? You may want to give the img tag the correct src, attach you dom ready handler to run your js: clear the image src (give it a fixed with and height with css to prevent the page flickering), then set your img load handler, then reset the src to the correct file. This way you cover all bases :)
You need a track pointer which will track the list.
You need two pointers :
first pointer to pick first node. second pointer to pick second node.
Processing :
Move Track Pointer
Point second node to first node
Move First pointer one step, by assigning second pointer to one
Move Second pointer one step, By assigning Track pointer to second
Node* reverselist( )
{
Node *first = NULL; // To keep first node
Node *second = head; // To keep second node
Node *track = head; // Track the list
while(track!=NULL)
{
track = track->next; // track point to next node;
second->next = first; // second node point to first
first = second; // move first node to next
second = track; // move second node to next
}
track = first;
return track;
}
you can try implementing this ForkJoinWorkerThreadFactory and inject it to Fork-Join class.
public ForkJoinPool(int parallelism,
ForkJoinWorkerThreadFactory factory,
UncaughtExceptionHandler handler,
boolean asyncMode) {
this(checkParallelism(parallelism),
checkFactory(factory),
handler,
asyncMode ? FIFO_QUEUE : LIFO_QUEUE,
"ForkJoinPool-" + nextPoolId() + "-worker-");
checkPermission();
}
you can use this constructor of Fork-Join pool to do this.
notes:-- 1. if you use this, take into consideration that based on your implementation of new threads, scheduling from JVM will be affected, which generally schedules fork-join threads to different cores(treated as a computational thread). 2. task scheduling by fork-join to threads won't get affected. 3. Haven't really figured out how parallel stream is picking threads from fork-join(couldn't find proper documentation on it), so try using a different threadNaming factory so as to make sure, if threads in parallel stream are being picked from customThreadFactory that you provide. 4. commonThreadPool won't use this customThreadFactory.
<Text ellipsizeMode='tail' numberOfLines={2} style={{width:100}}>
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam at cursus
</Text>
Result: Lorem ipsum...
There's another important point in constructor chaining: order. Why? Let's say that you have an object being constructed at runtime by a framework that expects it's default constructor. If you want to be able to pass in values while still having the ability to pass in constructor argments when you want, this is extremely useful.
I could for instance have a backing variable that gets set to a default value by my default constructor but has the ability to be overwritten.
public class MyClass
{
private IDependency _myDependency;
MyClass(){ _myDependency = new DefaultDependency(); }
MYClass(IMyDependency dependency) : this() {
_myDependency = dependency; //now our dependency object replaces the defaultDependency
}
}
You can remove flutter and "install again", so fastest way is to:
flutter
(as executable)To check it, you can run:
which flutter
And you can expect such output:
/your_user/your_path/flutter/bin/flutter
Above path is directly to flutter, but we would like to go to directory so "one earlier" in path:
cd /your_user/your_path/flutter/bin
git
repositoryIt should be, but it's worth to check.
Run one of the git command e.g.
git status
or
git branch
When it's git repository you will receive some info about it or correct list of branches.
rm -R *
git co -- .
You can run just flutter version
and commands should work (and Flutter will fetch some necessary data).
My suggestion would be to use RestSharp. You can make calls to REST services and have them cast into POCO objects with very little boilerplate code to actually have to parse through the response. This will not solve your particular error, but it answers your overall question of how to make calls to REST services. Having to change your code to use it should pay off in the ease of use and robustness moving forward. That is just my two cents though.
Example:
namespace RestSharpThingy
{
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Reflection;
using RestSharp;
public static class Program
{
public static void Main()
{
Uri baseUrl = new Uri("https://httpbin.org/");
IRestClient client = new RestClient(baseUrl);
IRestRequest request = new RestRequest("get", Method.GET) { Credentials = new NetworkCredential("testUser", "P455w0rd") };
request.AddHeader("Authorization", "Bearer qaPmk9Vw8o7r7UOiX-3b-8Z_6r3w0Iu2pecwJ3x7CngjPp2fN3c61Q_5VU3y0rc-vPpkTKuaOI2eRs3bMyA5ucKKzY1thMFoM0wjnReEYeMGyq3JfZ-OIko1if3NmIj79ZSpNotLL2734ts2jGBjw8-uUgKet7jQAaq-qf5aIDwzUo0bnGosEj_UkFxiJKXPPlF2L4iNJSlBqRYrhw08RK1SzB4tf18Airb80WVy1Kewx2NGq5zCC-SCzvJW-mlOtjIDBAQ5intqaRkwRaSyjJ_MagxJF_CLc4BNUYC3hC2ejQDoTE6HYMWMcg0mbyWghMFpOw3gqyfAGjr6LPJcIly__aJ5__iyt-BTkOnMpDAZLTjzx4qDHMPWeND-TlzKWXjVb5yMv5Q6Jg6UmETWbuxyTdvGTJFzanUg1HWzPr7gSs6GLEv9VDTMiC8a5sNcGyLcHBIJo8mErrZrIssHvbT8ZUPWtyJaujKvdgazqsrad9CO3iRsZWQJ3lpvdQwucCsyjoRVoj_mXYhz3JK3wfOjLff16Gy1NLbj4gmOhBBRb8rJnUXnP7rBHs00FAk59BIpKLIPIyMgYBApDCut8V55AgXtGs4MgFFiJKbuaKxq8cdMYEVBTzDJ-S1IR5d6eiTGusD5aFlUkAs9NV_nFw");
request.AddParameter("clientId", 123);
IRestResponse<RootObject> response = client.Execute<RootObject>(request);
if (response.IsSuccessful)
{
response.Data.Write();
}
else
{
Console.WriteLine(response.ErrorMessage);
}
Console.WriteLine();
string path = Assembly.GetExecutingAssembly().Location;
string name = Path.GetFileName(path);
request = new RestRequest("post", Method.POST);
request.AddFile(name, File.ReadAllBytes(path), name, "application/octet-stream");
response = client.Execute<RootObject>(request);
if (response.IsSuccessful)
{
response.Data.Write();
}
else
{
Console.WriteLine(response.ErrorMessage);
}
Console.ReadLine();
}
private static void Write(this RootObject rootObject)
{
Console.WriteLine("clientId: " + rootObject.args.clientId);
Console.WriteLine("Accept: " + rootObject.headers.Accept);
Console.WriteLine("AcceptEncoding: " + rootObject.headers.AcceptEncoding);
Console.WriteLine("AcceptLanguage: " + rootObject.headers.AcceptLanguage);
Console.WriteLine("Authorization: " + rootObject.headers.Authorization);
Console.WriteLine("Connection: " + rootObject.headers.Connection);
Console.WriteLine("Dnt: " + rootObject.headers.Dnt);
Console.WriteLine("Host: " + rootObject.headers.Host);
Console.WriteLine("Origin: " + rootObject.headers.Origin);
Console.WriteLine("Referer: " + rootObject.headers.Referer);
Console.WriteLine("UserAgent: " + rootObject.headers.UserAgent);
Console.WriteLine("origin: " + rootObject.origin);
Console.WriteLine("url: " + rootObject.url);
Console.WriteLine("data: " + rootObject.data);
Console.WriteLine("files: ");
foreach (KeyValuePair<string, string> kvp in rootObject.files ?? Enumerable.Empty<KeyValuePair<string, string>>())
{
Console.WriteLine("\t" + kvp.Key + ": " + kvp.Value);
}
}
}
public class Args
{
public string clientId { get; set; }
}
public class Headers
{
public string Accept { get; set; }
public string AcceptEncoding { get; set; }
public string AcceptLanguage { get; set; }
public string Authorization { get; set; }
public string Connection { get; set; }
public string Dnt { get; set; }
public string Host { get; set; }
public string Origin { get; set; }
public string Referer { get; set; }
public string UserAgent { get; set; }
}
public class RootObject
{
public Args args { get; set; }
public Headers headers { get; set; }
public string origin { get; set; }
public string url { get; set; }
public string data { get; set; }
public Dictionary<string, string> files { get; set; }
}
}
If the starting cell of the range and of the key is static, the solution can be very simple:
Range("A3").Select
Range(Selection, Selection.End(xlToRight)).Select
Range(Selection, Selection.End(xlDown)).Select
Selection.Sort key1:=Range("B3", Range("B3").End(xlDown)), _
order1:=xlAscending, Header:=xlNo
There are two ways to do the redirect. Both apply to either subprocess.Popen
or subprocess.call
.
Set the keyword argument shell = True
or executable = /path/to/the/shell
and specify the command just as you have it there.
Since you're just redirecting the output to a file, set the keyword argument
stdout = an_open_writeable_file_object
where the object points to the output
file.
subprocess.Popen
is more general than subprocess.call
.
Popen
doesn't block, allowing you to interact with the process while it's running, or continue with other things in your Python program. The call to Popen
returns a Popen
object.
call
does block. While it supports all the same arguments as the Popen
constructor, so you can still set the process' output, environmental variables, etc., your script waits for the program to complete, and call
returns a code representing the process' exit status.
returncode = call(*args, **kwargs)
is basically the same as calling
returncode = Popen(*args, **kwargs).wait()
call
is just a convenience function. It's implementation in CPython is in subprocess.py:
def call(*popenargs, timeout=None, **kwargs):
"""Run command with arguments. Wait for command to complete or
timeout, then return the returncode attribute.
The arguments are the same as for the Popen constructor. Example:
retcode = call(["ls", "-l"])
"""
with Popen(*popenargs, **kwargs) as p:
try:
return p.wait(timeout=timeout)
except:
p.kill()
p.wait()
raise
As you can see, it's a thin wrapper around Popen
.
You are creating three lists, instead of using one (you don't use the return value of DirSearch(d)
). You can use a list as a parameter to save the state:
static void Main(string[] args)
{
var list = new List<string>();
DirSearch(list, ".");
foreach (var file in list)
{
Console.WriteLine(file);
}
}
public static void DirSearch(List<string> files, string startDirectory)
{
try
{
foreach (string file in Directory.GetFiles(startDirectory, "*.*"))
{
string extension = Path.GetExtension(file);
if (extension != null)
{
files.Add(file);
}
}
foreach (string directory in Directory.GetDirectories(startDirectory))
{
DirSearch(files, directory);
}
}
catch (System.Exception e)
{
Console.WriteLine(e.Message);
}
}
If you want to enable multi-dex in your project then just go to gradle.builder
and add this in your dependencie
dependencies {
compile 'com.android.support:multidex:1.0.0'}
then you have to add
defaultConfig {
...
minSdkVersion 14
targetSdkVersion 21
...
// Enabling multidex support.
multiDexEnabled true}
Then open a class and extand it to Application If your app uses extends the Application class, you can override the oncrete() method and call
MultiDex.install(this)
to enable multidex.
and finally add into your manifest
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.android.multidex.myapplication">
<application
...
android:name="android.support.multidex.MultiDexApplication">
...
</application>
</manifest>
FYI The $scope Object has the $emit, $broadcast, $on AND The $rootScope Object has the identical $emit, $broadcast, $on
read more about publish/subscribe design pattern in angular here
It means that rather than needing to push the instruction pointer on the stack, you can simply jump to the top of a recursive function and continue execution. This allows for functions to recurse indefinitely without overflowing the stack.
I wrote a blog post on the subject, which has graphical examples of what the stack frames look like.
This marks the session as Abandoned, but the session won't actually be Abandoned at that moment, the request has to complete first.
Conda and pip install scikit-learn under ~/anaconda3/envs/$ENV/lib/python3.7/site-packages, however Jupyter notebook looks for the package under ~/anaconda3/lib/python3.7/site-packages.
Therefore, even when the environment is specified to conda, it does not work.
conda install -n $ENV scikit-learn # Does not work
pip 3 install the package under ~/anaconda3/lib/python3.7/site-packages.
After pip3, in a Jupyter notebook.
import sklearn
sklearn.__file__
~/anaconda3/lib/python3.7/site-packages/sklearn/init.py'
You can use upstream headers (named starting with $http_) and additional custom headers. For example:
add_header X-Upstream-01 $http_x_upstream_01;
add_header X-Hdr-01 txt01;
next, go to console and make request with user's header:
curl -H "X-Upstream-01: HEADER1" -I http://localhost:11443/
the response contains X-Hdr-01, seted by server and X-Upstream-01, seted by client:
HTTP/1.1 200 OK
Server: nginx/1.8.0
Date: Mon, 30 Nov 2015 23:54:30 GMT
Content-Type: text/html;charset=UTF-8
Connection: keep-alive
X-Hdr-01: txt01
X-Upstream-01: HEADER1
svn revert -R .
svn up
This will recursively revert the current directory and everything under it and then update to the latest version.
Version used to ensure that only one update in a time. JPA provider will check the version, if the expected version already increase then someone else already update the entity so an exception will be thrown.
So updating entity value would be more secure, more optimist.
If the value changes frequent, then you might consider not to use version field. For an example "an entity that has counter field, that will increased everytime a web page accessed"
Change this line:
if (typeof(T) == typeof(string))
For this line:
if (t.GetType() == typeof(string))
What seems to be confusing this thread is the difference between:
$('.selector').append("<input type='text'/>");
Which appends the target element as a child of the .selector.
And
$("<input type='text' />").appendTo('.selector');
Which appends the target element as a child of the .selector.
Note how the position of the target element & the .selector change when using the different methods.
What you want to do is this:
$(function() {
// append input control at start of form
$("<input type='text' value='' />")
.attr("id", "myfieldid")
.attr("name", "myfieldid")
.prependTo("#form-0");
// OR
// append input control at end of form
$("<input type='text' value='' />")
.attr("id", "myfieldid")
.attr("name", "myfieldid")
.appendTo("#form-0");
// OR
// see .after() or .before() in the api.jquery.com library
});
update: please check the answer of Jeff Gilliland below for updated solution
Seems like as this thread says a breaking change was issued:
Components can no longer be imported through "@angular/material". Use the individual secondary entry-points, such as @angular/material/button.
Update: can confirm, this was the issue. After downgrading @angular/[email protected]...
to @angular/[email protected]
we could solve this temporarily. Guess we need to update the project for a long term solution.
To fix the issue:
protected void Application_PostAuthorizeRequest()
{
System.Web.HttpContext.Current.SetSessionStateBehavior(System.Web.SessionState.SessionStateBehavior.Required);
}
in Global.asax.cs
Have a look at commons. It uses arrayCopy(), but has nicer syntax. To those answering with the element-by-element code: if this isn't homework, that's trivial and the interesting answer is the one that promotes reuse. To those who propose lists: probably readers know about that too and performance issues should be mentioned.
You can only manually delete properties of objects. Thus:
var container = {};
container.instance = new class();
delete container.instance;
However, this won't work on any other pointers. Therefore:
var container = {};
container.instance = new class();
var pointer = container.instance;
delete pointer; // false ( ie attempt to delete failed )
Furthermore:
delete container.instance; // true ( ie attempt to delete succeeded, but... )
pointer; // class { destroy: function(){} }
So in practice, deletion is only useful for removing object properties themselves, and is not a reliable method for removing the code they point to from memory.
A manually specified destroy
method could unbind any event listeners. Something like:
function class(){
this.properties = { /**/ }
function handler(){ /**/ }
something.addEventListener( 'event', handler, false );
this.destroy = function(){
something.removeEventListener( 'event', handler );
}
}
I found this solution to allow the scroll up and down using two different buttons.
As suggested by @Nepster I implement the scroll programmatically using the getFirstVisiblePosition() and getLastVisiblePosition() to get the current position.
final ListView lwresult = (ListView) findViewById(R.id.rds_rdi_mat_list);
.....
if (list.size() > 0) {
ImageButton bnt = (ImageButton) findViewById(R.id.down_action);
bnt.setVisibility(View.VISIBLE);
bnt.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if(lwresult.getLastVisiblePosition()<lwresult.getAdapter().getCount()){
lwresult.smoothScrollToPosition(lwresult.getLastVisiblePosition()+5);
}else{
lwresult.smoothScrollToPosition(lwresult.getAdapter().getCount());
}
}
});
bnt = (ImageButton) findViewById(R.id.up_action);
bnt.setVisibility(View.VISIBLE);
bnt.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if(lwresult.getFirstVisiblePosition()>0){
lwresult.smoothScrollToPosition(lwresult.getFirstVisiblePosition()-5);
}else{
lwresult.smoothScrollToPosition(0);
}
}
});
}
This is my current method of checking if Mod_rewrite enabled for both Apache and IIS
/**
* --------------------------------------------------------------
* MOD REWRITE CHECK
* --------------------------------------------------------------
* - By A H Abid
* Define Constant for MOD REWRITE
*
* Check if server allows MOD REWRITE. Checks for both
* Apache and IIS.
*
*/
if( function_exists('apache_get_modules') && in_array('mod_rewrite',apache_get_modules()) )
$mod_rewrite = TRUE;
elseif( isset($_SERVER['IIS_UrlRewriteModule']) )
$mod_rewrite = TRUE;
else
$mod_rewrite = FALSE;
define('MOD_REWRITE', $mod_rewrite);
It works in my local machine and also worked in my IIS based webhost. However, on a particular apache server, it didn't worked for Apache as the apache_get_modules() was disabled but the mod_rewrite was enable in that server.
RFC 2396 section 4.1:
When a URI reference is used to perform a retrieval action on the identified resource, the optional fragment identifier, separated from the URI by a crosshatch ("#") character, consists of additional reference information to be interpreted by the user agent after the retrieval action has been successfully completed. As such, it is not part of a URI, but is often used in conjunction with a URI.
(emphasis added)
Most of the suggestions are now, no longer valid.
The correct fix as of today, is to use the 'button' layout.
eg. <div class="fb-like" data-href="https://developers.facebook.com/docs/plugins/" data-layout="button" data-action="like" data-show-faces="true" data-share="false"></div>
The FB Docs, seem not to be fully updated yet... if you scroll down you'll see they state only 3 layouts are available, yet the dropdown suggests 4.
This means you can now use a less hacky solution!
A couple of relevant links:
For a while, I was following the development of Reia, which was initially going to have Python's indentation based syntax with Ruby blocks too, all on top of Erlang. But, the designer wound up giving up on indentation sensitivity, and this post he wrote about that decision includes a discussion about problems he ran into with indentation + multi-line blocks, and an increased appreciation he gained for Guido's design issues/decisions:
http://www.unlimitednovelty.com/2009/03/indentation-sensitivity-post-mortem.html
Also, here's an interesting proposal for Ruby-style blocks in Python I ran across where Guido posts a response w/o actually shooting it down (not sure whether there has been any subsequent shoot down, though):
Actually, none of these answers reflect current state of the art with Git (v2.29 by time of writing this answer). In the latest versions of Git, cache
, winstore
, wincred
are deprecated.
If you want to clone a Bitbucket repository via HTTPS, e.g.
git clone https://[email protected]/SomeOrganization/SomeRepo.git
.gitconfig
accordingly (global or local)[credential]
helper = manager
You can locate your .gitconfig
by executing this command.
git config --list --show-origin
git clone https://[email protected]/SomeOrganization/SomeRepo.git
and wait until log on window appears. Use your user name from the url (kutlime in my case) and your generated app password as a password.
To run Selenium WebDriver test cases in Chrome, follow these steps:
First of all, set the property and Chrome driver path:
System.setProperty("webdriver.chrome.driver", "/path/to/chromedriver");
Initialize the Chrome Driver's object:
WebDriver driver = new ChromeDriver();
Pass the URL into the get
method of WebDriver:
driver.get("http://www.google.com");
I guess the best way to do this is like this :
That how I resolve mine, whenever it happens.
I had the same problem. I followed the steps to change the icon but it always installed the default icon.
FIX: After I did the above, I rebuilt the solution by going to build on the Visual Studio menu bar and clicking on 'rebuild solution' and it worked!
try this
in layout.xml :
<TextView
android:id="@+id/xxx"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="@string/empty_spaces" />
in strings.xml :
<string name="empty_spaces">\t\t</string>
it worked for me
You can use lambda
to pass a reference to the window
object as argument to close_window
function:
button = Button (frame, text="Good-bye.", command = lambda: close_window(window))
This works because the command
attribute is expecting a callable, or callable like object.
A lambda
is a callable, but in this case it is essentially the result of calling a given function with set parameters.
In essence, you're calling the lambda wrapper of the function which has no args, not the function itself.
You are overwriting the start
date object with the value
of a DOM Element with an id of Startdate
.
This should work:
var start = new Date(document.getElementById('Stardate').value);
var y = start.getFullYear();
I just published this module because I needed this functionality.
https://www.npmjs.org/package/filendir
It works like a wrapper around Node.js fs methods. So you can use it exactly the same way you would with fs.writeFile
and fs.writeFileSync
(both async and synchronous writes)
it clears the all the bits that are not in the first byte
Same thing you'd expect from normal modulo .. e.g. 7 % 4 = 3
, 7.3 % 4.0 = 3.3
Beware of floating point accuracy issues.
Since the suggestion of a loop implies the request for a procedure type solution. Here is mine.
Any query which works on any single record taken from a table can be wrapped in a procedure to make it run through each row of a table like so:
First delete any existing procedure with the same name, and change the delimiter so your SQL doesn't try to run each line as you're trying to write the procedure.
DROP PROCEDURE IF EXISTS ROWPERROW;
DELIMITER ;;
Then here's the procedure as per your example (table_A and table_B used for clarity)
CREATE PROCEDURE ROWPERROW()
BEGIN
DECLARE n INT DEFAULT 0;
DECLARE i INT DEFAULT 0;
SELECT COUNT(*) FROM table_A INTO n;
SET i=0;
WHILE i<n DO
INSERT INTO table_B(ID, VAL) SELECT (ID, VAL) FROM table_A LIMIT i,1;
SET i = i + 1;
END WHILE;
End;
;;
Then dont forget to reset the delimiter
DELIMITER ;
And run the new procedure
CALL ROWPERROW();
You can do whatever you like at the "INSERT INTO" line which I simply copied from your example request.
Note CAREFULLY that the "INSERT INTO" line used here mirrors the line in the question. As per the comments to this answer you need to ensure that your query is syntactically correct for which ever version of SQL you are running.
In the simple case where your ID field is incremented and starts at 1 the line in the example could become:
INSERT INTO table_B(ID, VAL) VALUES(ID, VAL) FROM table_A WHERE ID=i;
Replacing the "SELECT COUNT" line with
SET n=10;
Will let you test your query on the first 10 record in table_A only.
One last thing. This process is also very easy to nest across different tables and was the only way I could carry out a process on one table which dynamically inserted different numbers of records into a new table from each row of a parent table.
If you need it to run faster then sure try to make it set based, if not then this is fine. You could also rewrite the above in cursor form but it may not improve performance. eg:
DROP PROCEDURE IF EXISTS cursor_ROWPERROW;
DELIMITER ;;
CREATE PROCEDURE cursor_ROWPERROW()
BEGIN
DECLARE cursor_ID INT;
DECLARE cursor_VAL VARCHAR;
DECLARE done INT DEFAULT FALSE;
DECLARE cursor_i CURSOR FOR SELECT ID,VAL FROM table_A;
DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = TRUE;
OPEN cursor_i;
read_loop: LOOP
FETCH cursor_i INTO cursor_ID, cursor_VAL;
IF done THEN
LEAVE read_loop;
END IF;
INSERT INTO table_B(ID, VAL) VALUES(cursor_ID, cursor_VAL);
END LOOP;
CLOSE cursor_i;
END;
;;
Remember to declare the variables you will use as the same type as those from the queried tables.
My advise is to go with setbased queries when you can, and only use simple loops or cursors if you have to.
Connect android phone without using USB cable except XIAOMI PHONES
== MAKE SURE THAT YOUR PHONE HAS USB DEBUGGING ENABLED ==
== IP Address series should NOT be '0' like 192.168.0.10
1. Connect your PC (Laptop) and Android phone to same wifi network.
2. Go to the Android SDK folder > platform-tools and open command prompt by holding the shift key and right clicking on the folder.
3. Type the command "adb tcpip 5555", and hit Enter, sometimes it gives an error but ignore it and go ahead.
4. Type "adb connect [YOUR PHONE IP]". example: "adb connect 192.168.1.34" and hit enter, your phone will be connected to PC.
Short answer is run Command virtualenv with parameter “—no-site-packages”.
Long answer with explanation :-
So after running here and there, and going through lot of threads i found my self the problem. Above answers have given the idea but I would like to go again over everything though.
The problem is even if you’re activating the environment it’s referring to the system environment because of the way we have crated the virtualenv.
when we run the command virtualenv env -p python3 it will install the virtualenv but it will not create no-global—site-packages.txt.
Because of that when you activate the environment by source activate command there this file called site.py (name can be different, i just forgot ) which runs and checks if this file is not present it will not add your env path to sys.path and use systems python.
to fix this issue just run virtualenv with extra parameter —no-site-packages it will create that file and when you activate the environment it will add your custom environment path in your PATH variable making it accessible.
SQL> SELECT version FROM v$instance;
VERSION
-----------------
11.2.0.3.0
Use java.text.Normalizer
to handle this for you.
string = Normalizer.normalize(string, Normalizer.Form.NFD);
// or Normalizer.Form.NFKD for a more "compatable" deconstruction
This will separate all of the accent marks from the characters. Then, you just need to compare each character against being a letter and throw out the ones that aren't.
string = string.replaceAll("[^\\p{ASCII}]", "");
If your text is in unicode, you should use this instead:
string = string.replaceAll("\\p{M}", "");
For unicode, \\P{M}
matches the base glyph and \\p{M}
(lowercase) matches each accent.
Thanks to GarretWilson for the pointer and regular-expressions.info for the great unicode guide.
Change return false;
to return true;
in longClickListener
You long click the button, if it returns true then it does the work. If it returns false then it does it's work and also calls the short click and then the onClick also works.
It's syntactically correct and stylistically okay.
Good style requires every case:
statement should end with one of the following:
break;
continue;
return (x);
exit (x);
throw (x);
//fallthrough
Additionally, following case (x):
immediately with
case (y):
default:
is permissible - bundling several cases that have exactly the same effect.
Anything else is suspected to be a mistake, just like if(a=4){...}
Of course you need enclosing loop (while
, for
, do...while
) for continue
to work. It won't loop back to case()
alone. But a construct like:
while(record = getNewRecord())
{
switch(record.type)
{
case RECORD_TYPE_...;
...
break;
default: //unknown type
continue; //skip processing this record altogether.
}
//...more processing...
}
...is okay.
Although this is valid in HTML, you can't use an ID starting with an integer in CSS selectors.
As pointed out, you can use getElementById
instead, but you can also still achieve the same with a querySelector
:
document.querySelector("[id='22']")
it's simple, use the "-B" option to add .h files' dir to search path.
E.g. g++ -B /header_file.h your.cpp -o bin/your_command
If the object is actually a Boolean
instance, then just cast it:
boolean di = (Boolean) someObject;
The explicit cast will do the conversion to Boolean
, and then there's the auto-unboxing to the primitive value. Or you can do that explicitly:
boolean di = ((Boolean) someObject).booleanValue();
If someObject
doesn't refer to a Boolean value though, what do you want the code to do?
I got this error in react routing, problem was that I was using
<Route path="/" component={<Home/>} exact />
but it was wrong route requires component as a class/function so I changed it to
<Route path="/" component={Home} exact />
and it worked. (Just avoid the braces around the component)
What worked for me was using 'always|withText'. If you have many menus, consider using 'ifRoom' instead of 'always'.
<item android:id="@id/resource_name"
android:title="text"
android:icon="@drawable/drawable_resource_name"
android:showAsAction="always|withText" />
I always use Moment.js when I need to use dates for any reason.
Try this:
import { Pipe, PipeTransform } from '@angular/core'
import * as moment from 'moment'
@Pipe({
name: 'formatDate'
})
export class DatePipe implements PipeTransform {
transform(date: any, args?: any): any {
let d = new Date(date)
return moment(d).format('DD/MM/YYYY')
}
}
And in the view:
<p>{{ date | formatDate }}</p>
You need to do one thing:
async
before function.const gulp = require('gulp');
gulp.task('message', async function() {
console.log("Gulp is running...");
});
_x000D_
This solution gives correct results over the entire range [0,UINT_MAX] without requiring digits to be buffered.
It also works for wider types or signed types (with positive values) with appropriate type changes.
This kind of approach is particularly useful on tiny environments (e.g. Arduino bootloader) because it doesn't end up pulling in all the printf() bloat (when printf() isn't used for demo output) and uses very little RAM. You can get a look at value just by blinking a single led :)
#include <limits.h>
#include <stdio.h>
int
main (void)
{
unsigned int score = 42; // Works for score in [0, UINT_MAX]
printf ("score via printf: %u\n", score); // For validation
printf ("score digit by digit: ");
unsigned int div = 1;
unsigned int digit_count = 1;
while ( div <= score / 10 ) {
digit_count++;
div *= 10;
}
while ( digit_count > 0 ) {
printf ("%d", score / div);
score %= div;
div /= 10;
digit_count--;
}
printf ("\n");
return 0;
}
In IOS 8 do it like
navigationController?.hidesBarsOnTap = true
but only when it's part of a UINavigationController
make it false when you want it back
I cleaned up mido's post and then cleaned up the function that they found. This will either return false
or an array
. When testing remember that you need to collapse the array in the web developer console otherwise it's nonintuitive default behavior may deceive you in to thinking that it is returning an empty array
.
function ip_local()
{
var ip = false;
window.RTCPeerConnection = window.RTCPeerConnection || window.mozRTCPeerConnection || window.webkitRTCPeerConnection || false;
if (window.RTCPeerConnection)
{
ip = [];
var pc = new RTCPeerConnection({iceServers:[]}), noop = function(){};
pc.createDataChannel('');
pc.createOffer(pc.setLocalDescription.bind(pc), noop);
pc.onicecandidate = function(event)
{
if (event && event.candidate && event.candidate.candidate)
{
var s = event.candidate.candidate.split('\n');
ip.push(s[0].split(' ')[4]);
}
}
}
return ip;
}
Additionally please keep in mind folks that this isn't something old-new like CSS border-radius
though one of those bits that is outright not supported by IE11 and older. Always use object detection, test in reasonably older browsers (e.g. Firefox 4, IE9, Opera 12.1) and make sure your newer scripts aren't breaking your newer bits of code. Additionally always detect standards compliant code first so if there is something with say a CSS prefix detect the standard non-prefixed code first and then fall back as in the long term support will eventually be standardized for the rest of it's existence.
urllib
and Django-like regexThe Django URL validation regex was actually pretty good but I needed to tweak it a little bit for my use case. Feel free to adapt it to yours!
import re
import urllib
# Check https://regex101.com/r/A326u1/5 for reference
DOMAIN_FORMAT = re.compile(
r"(?:^(\w{1,255}):(.{1,255})@|^)" # http basic authentication [optional]
r"(?:(?:(?=\S{0,253}(?:$|:))" # check full domain length to be less than or equal to 253 (starting after http basic auth, stopping before port)
r"((?:[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9])?\.)+" # check for at least one subdomain (maximum length per subdomain: 63 characters), dashes in between allowed
r"(?:[a-z0-9]{1,63})))" # check for top level domain, no dashes allowed
r"|localhost)" # accept also "localhost" only
r"(:\d{1,5})?", # port [optional]
re.IGNORECASE
)
SCHEME_FORMAT = re.compile(
r"^(http|hxxp|ftp|fxp)s?$", # scheme: http(s) or ftp(s)
re.IGNORECASE
)
def validate_url(url: str):
url = url.strip()
if not url:
raise Exception("No URL specified")
if len(url) > 2048:
raise Exception("URL exceeds its maximum length of 2048 characters (given length={})".format(len(url)))
result = urllib.parse.urlparse(url)
scheme = result.scheme
domain = result.netloc
if not scheme:
raise Exception("No URL scheme specified")
if not re.fullmatch(SCHEME_FORMAT, scheme):
raise Exception("URL scheme must either be http(s) or ftp(s) (given scheme={})".format(scheme))
if not domain:
raise Exception("No URL domain specified")
if not re.fullmatch(DOMAIN_FORMAT, domain):
raise Exception("URL domain malformed (domain={})".format(domain))
return url
scheme
and netloc
part of a given URL. (To do this properly, I split the URL with urllib.parse.urlparse()
in the two according parts which are then matched with the corresponding regex terms.)The netloc
part stops before the first occurrence of a slash /
, so port
numbers are still part of the netloc
, e.g.:
https://www.google.com:80/search?q=python
^^^^^ ^^^^^^^^^^^^^^^^^
| |
| +-- netloc (aka "domain" in my code)
+-- scheme
IPv4 addresses are also validated
If you want the URL validator to also work with IPv6 addresses, do the following:
is_valid_ipv6(ip)
from Markus Jarderot's answer, which has a really good IPv6 validator regexand not is_valid_ipv6(domain)
to the last if
Here are some examples of the regex for the netloc
(aka domain
) part in action:
The solution of Rob Stevenson-Legget is slow because he doesn't bind his values but he uses string.Format( ).
When you ask Oracle to execute a sql statement it starts with calculating the has value of this statement. After that it looks in a hash table whether it already knows this statement. If it already knows it statement it can retrieve its execution path from this hash table and execute this statement really fast because Oracle has executed this statement before. This is called the library cache and it doesn't work properly if you don't bind your sql statements.
For example don't do:
int n;
for (n = 0; n < 100000; n ++)
{
mycommand.CommandText = String.Format("INSERT INTO [MyTable] ([MyId]) VALUES({0})", n + 1);
mycommand.ExecuteNonQuery();
}
but do:
OracleParameter myparam = new OracleParameter();
int n;
mycommand.CommandText = "INSERT INTO [MyTable] ([MyId]) VALUES(?)";
mycommand.Parameters.Add(myparam);
for (n = 0; n < 100000; n ++)
{
myparam.Value = n + 1;
mycommand.ExecuteNonQuery();
}
Not using parameters can also cause sql injection.
Have a method like this. This appends required spaces at the end of the given String
to make a given String
to length of specific length.
public static String fillSpaces (String str) {
// the spaces string should contain spaces exceeding the max needed
String spaces = " ";
return str + spaces.substring(str.length());
}
For simple document, I sometimes use verbatim, but listing is nice for big chunk of code.
To extend onto above answers, You can actually add more than one package in your EnableJPARepositories tag, so that you won't run into "Object not mapped" error after only specifying the repository package.
@SpringBootApplication
@EnableJpaRepositories(basePackages = {"com.test.model", "com.test.repository"})
public class SpringBootApplication{
}
You can loop over the properties of your object as follows:
for(var prop in ad) {
if (ad.hasOwnProperty(prop)) {
// handle prop as required
}
}
It is important to use the hasOwnProperty()
method, to determine whether the object has the specified property as a direct property, and not inherited from the object's prototype chain.
From the comments: You can put that code in a function, and make it return false as soon as it reaches the part where there is the comment
Regex: match everything but:
foo
):
world.
at the end):
foo
) (no POSIX compliant patern, sorry):
|
symbol):
foo
):
cat
): /cat(*SKIP)(*FAIL)|[^c]*(?:c(?!at)[^c]*)*/i
or /cat(*SKIP)(*FAIL)|(?:(?!cat).)+/is
(cat)|[^c]*(?:c(?!at)[^c]*)*
(or (?s)(cat)|(?:(?!cat).)*
, or (cat)|[^c]+(?:c(?!at)[^c]*)*|(?:c(?!at)[^c]*)+[^c]*
) and then check with language means: if Group 1 matched, it is not what we need, else, grab the match value if not empty[^a-z]+
(any char other than a lowercase ASCII letter)|
: [^|]+
Demo note: the newline \n
is used inside negated character classes in demos to avoid match overflow to the neighboring line(s). They are not necessary when testing individual strings.
Anchor note: In many languages, use \A
to define the unambiguous start of string, and \z
(in Python, it is \Z
, in JavaScript, $
is OK) to define the very end of the string.
Dot note: In many flavors (but not POSIX, TRE, TCL), .
matches any char but a newline char. Make sure you use a corresponding DOTALL modifier (/s
in PCRE/Boost/.NET/Python/Java and /m
in Ruby) for the .
to match any char including a newline.
Backslash note: In languages where you have to declare patterns with C strings allowing escape sequences (like \n
for a newline), you need to double the backslashes escaping special characters so that the engine could treat them as literal characters (e.g. in Java, world\.
will be declared as "world\\."
, or use a character class: "world[.]"
). Use raw string literals (Python r'\bworld\b'
), C# verbatim string literals @"world\."
, or slashy strings/regex literal notations like /world\./
.
In response to: "How to convert Tue Sep 13 2016 00:00:00 GMT-0500 (Hora de verano central (México)) to dd-MM-yy in Java?", it was marked how duplicate
Try this:
With java.util.Date
, java.text.SimpleDateFormat
, it's a simple solution.
public static void main(String[] args) throws ParseException {
String fecha = "Tue Sep 13 2016 00:00:00 GMT-0500 (Hora de verano central (México))";
Date f = new Date(fecha);
SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy");
sdf.setTimeZone(TimeZone.getTimeZone("-5GMT"));
fecha = sdf.format(f);
System.out.println(fecha);
}
If the data to be encoded contains "exotic" characters, I think you have to encode in "UTF-8"
encoded = base64.b64encode (bytes('data to be encoded', "utf-8"))
I recently ran into a similar problem, the solution that I came up with uses __getattr__
and __setattr__
for the properties that I want it to handle, everything else gets passed on to the originals.
class C(object):
def __init__(self, properties):
self.existing = "Still Here"
self.properties = properties
def __getattr__(self, name):
if "properties" in self.__dict__ and name in self.properties:
return self.properties[name] # Or call a function, etc
return self.__dict__[name]
def __setattr__(self, name, value):
if "properties" in self.__dict__ and name in self.properties:
self.properties[name] = value
else:
self.__dict__[name] = value
if __name__ == "__main__":
my_properties = {'a':1, 'b':2, 'c':3}
c = C(my_properties)
assert c.a == 1
assert c.existing == "Still Here"
c.b = 10
assert c.properties['b'] == 10
Seems like you need to use a stream-based library such as fast-csv, which also includes validation support.
if you check for the element type
type(countries[1])
the result will be <class float>
so you can use the following code:
[i for i in countries if type(i) is not float]
This approach, df1 != df2
, works only for dataframes with identical rows and columns. In fact, all dataframes axes are compared with _indexed_same
method, and exception is raised if differences found, even in columns/indices order.
If I got you right, you want not to find changes, but symmetric difference. For that, one approach might be concatenate dataframes:
>>> df = pd.concat([df1, df2])
>>> df = df.reset_index(drop=True)
group by
>>> df_gpby = df.groupby(list(df.columns))
get index of unique records
>>> idx = [x[0] for x in df_gpby.groups.values() if len(x) == 1]
filter
>>> df.reindex(idx)
Date Fruit Num Color
9 2013-11-25 Orange 8.6 Orange
8 2013-11-25 Apple 22.1 Red
It's waiting for you to "push". Try:
$ git push
Since for me, some elements are created on page load, and some are dynamically added by the user; I used this to make sure everything stayed DRY.
On submit, find everything with class x, remove class x, add rule x.
$('#form').on('submit', function(e) {
$('.alphanumeric_dash').each(function() {
var $this = $(this);
$this.removeClass('alphanumeric_dash');
$(this).rules('add', {
alphanumeric_dash: true
});
});
});
Note: The widely used solution above is based on displayMetrics.density
. However, the docs explain that this value is a rounded value, used with the screen 'buckets'. Eg. on my Nexus 10 it returns 2, where the real value would be 298dpi (real) / 160dpi (default) = 1.8625.
Depending on your requirements, you might need the exact transformation, which can be achieved like this:
[Edit] This is not meant to be mixed with Android's internal dp unit, as this is of course still based on the screen buckets. Use this where you want a unit that should render the same real size on different devices.
Convert dp to pixel:
public int dpToPx(int dp) {
DisplayMetrics displayMetrics = getContext().getResources().getDisplayMetrics();
return Math.round(dp * (displayMetrics.xdpi / DisplayMetrics.DENSITY_DEFAULT));
}
Convert pixel to dp:
public int pxToDp(int px) {
DisplayMetrics displayMetrics = getContext().getResources().getDisplayMetrics();
return Math.round(px / (displayMetrics.xdpi / DisplayMetrics.DENSITY_DEFAULT));
}
Note that there are xdpi and ydpi properties, you might want to distinguish, but I can't imagine a sane display where these values differ greatly.
You can create a Date
object, and call getTime
on it:
new Date(2010, 6, 26).getTime() / 1000
Too many times I've found ways to solve what you are asking for that, in my opinion are too complicated. For instance you have to define new class types, link library etc. So I decided to write a few lines of code that allow the end user to basically be able to "thread-ize" a "void ::method(void)" of whatever class. For sure this solution I implemented can be extended, improved etc, so, if you need more specific methods or features, add them and please be so kind to keep me in the loop.
Here are 3 files that show what I did.
// A basic mutex class, I called this file Mutex.h
#ifndef MUTEXCONDITION_H_
#define MUTEXCONDITION_H_
#include <pthread.h>
#include <stdio.h>
class MutexCondition
{
private:
bool init() {
//printf("MutexCondition::init called\n");
pthread_mutex_init(&m_mut, NULL);
pthread_cond_init(&m_con, NULL);
return true;
}
bool destroy() {
pthread_mutex_destroy(&m_mut);
pthread_cond_destroy(&m_con);
return true;
}
public:
pthread_mutex_t m_mut;
pthread_cond_t m_con;
MutexCondition() {
init();
}
virtual ~MutexCondition() {
destroy();
}
bool lock() {
pthread_mutex_lock(&m_mut);
return true;
}
bool unlock() {
pthread_mutex_unlock(&m_mut);
return true;
}
bool wait() {
lock();
pthread_cond_wait(&m_con, &m_mut);
unlock();
return true;
}
bool signal() {
pthread_cond_signal(&m_con);
return true;
}
};
#endif
// End of Mutex.h
// The class that incapsulates all the work to thread-ize a method (test.h):
#ifndef __THREAD_HANDLER___
#define __THREAD_HANDLER___
#include <pthread.h>
#include <vector>
#include <iostream>
#include "Mutex.h"
using namespace std;
template <class T>
class CThreadInfo
{
public:
typedef void (T::*MHT_PTR) (void);
vector<MHT_PTR> _threaded_methods;
vector<bool> _status_flags;
T *_data;
MutexCondition _mutex;
int _idx;
bool _status;
CThreadInfo(T* p1):_data(p1), _idx(0) {}
void setThreadedMethods(vector<MHT_PTR> & pThreadedMethods)
{
_threaded_methods = pThreadedMethods;
_status_flags.resize(_threaded_methods.size(), false);
}
};
template <class T>
class CSThread {
protected:
typedef void (T::*MHT_PTR) (void);
vector<MHT_PTR> _threaded_methods;
vector<string> _thread_labels;
MHT_PTR _stop_f_pt;
vector<T*> _elements;
vector<T*> _performDelete;
vector<CThreadInfo<T>*> _threadlds;
vector<pthread_t*> _threads;
int _totalRunningThreads;
static void * gencker_(void * pArg)
{
CThreadInfo<T>* vArg = (CThreadInfo<T> *) pArg;
vArg->_mutex.lock();
int vIndex = vArg->_idx++;
vArg->_mutex.unlock();
vArg->_status_flags[vIndex]=true;
MHT_PTR mhtCalledOne = vArg->_threaded_methods[vIndex];
(vArg->_data->*mhtCalledOne)();
vArg->_status_flags[vIndex]=false;
return NULL;
}
public:
CSThread ():_stop_f_pt(NULL), _totalRunningThreads(0) {}
~CSThread()
{
for (int i=_threads.size() -1; i >= 0; --i)
pthread_detach(*_threads[i]);
for (int i=_threadlds.size() -1; i >= 0; --i)
delete _threadlds[i];
for (int i=_elements.size() -1; i >= 0; --i)
if (find (_performDelete.begin(), _performDelete.end(), _elements[i]) != _performDelete.end())
delete _elements[i];
}
int runningThreadsCount(void) {return _totalRunningThreads;}
int elementsCount() {return _elements.size();}
void addThread (MHT_PTR p, string pLabel="") { _threaded_methods.push_back(p); _thread_labels.push_back(pLabel);}
void clearThreadedMethods() { _threaded_methods.clear(); }
void getThreadedMethodsCount() { return _threaded_methods.size(); }
void addStopMethod(MHT_PTR p) { _stop_f_pt = p; }
string getStatusStr(unsigned int _elementIndex, unsigned int pMethodIndex)
{
char ch[99];
if (getStatus(_elementIndex, pMethodIndex) == true)
sprintf (ch, "[%s] - TRUE\n", _thread_labels[pMethodIndex].c_str());
else
sprintf (ch, "[%s] - FALSE\n", _thread_labels[pMethodIndex].c_str());
return ch;
}
bool getStatus(unsigned int _elementIndex, unsigned int pMethodIndex)
{
if (_elementIndex > _elements.size()) return false;
return _threadlds[_elementIndex]->_status_flags[pMethodIndex];
}
bool run(unsigned int pIdx)
{
T * myElem = _elements[pIdx];
_threadlds.push_back(new CThreadInfo<T>(myElem));
_threadlds[_threadlds.size()-1]->setThreadedMethods(_threaded_methods);
int vStart = _threads.size();
for (int hhh=0; hhh<_threaded_methods.size(); ++hhh)
_threads.push_back(new pthread_t);
for (int currentCount =0; currentCount < _threaded_methods.size(); ++vStart, ++currentCount)
{
if (pthread_create(_threads[vStart], NULL, gencker_, (void*) _threadlds[_threadlds.size()-1]) != 0)
{
// cout <<"\t\tThread " << currentCount << " creation FAILED for element: " << pIdx << endl;
return false;
}
else
{
++_totalRunningThreads;
// cout <<"\t\tThread " << currentCount << " creation SUCCEDED for element: " << pIdx << endl;
}
}
return true;
}
bool run()
{
for (int vI = 0; vI < _elements.size(); ++vI)
if (run(vI) == false) return false;
// cout <<"Number of currently running threads: " << _totalRunningThreads << endl;
return true;
}
T * addElement(void)
{
int vId=-1;
return addElement(vId);
}
T * addElement(int & pIdx)
{
T * myElem = new T();
_elements.push_back(myElem);
pIdx = _elements.size()-1;
_performDelete.push_back(myElem);
return _elements[pIdx];
}
T * addElement(T *pElem)
{
int vId=-1;
return addElement(pElem, vId);
}
T * addElement(T *pElem, int & pIdx)
{
_elements.push_back(pElem);
pIdx = _elements.size()-1;
return pElem;
}
T * getElement(int pId) { return _elements[pId]; }
void stopThread(int i)
{
if (_stop_f_pt != NULL)
{
( _elements[i]->*_stop_f_pt)() ;
}
pthread_detach(*_threads[i]);
--_totalRunningThreads;
}
void stopAll()
{
if (_stop_f_pt != NULL)
for (int i=0; i<_elements.size(); ++i)
{
( _elements[i]->*_stop_f_pt)() ;
}
_totalRunningThreads=0;
}
};
#endif
// end of test.h
// A usage example file "test.cc" that on linux I've compiled with The class that incapsulates all the work to thread-ize a method: g++ -o mytest.exe test.cc -I. -lpthread -lstdc++
#include <test.h>
#include <vector>
#include <iostream>
#include <Mutex.h>
using namespace std;
// Just a class for which I need to "thread-ize" a some methods
// Given that with OOP the objecs include both "functions" (methods)
// and data (attributes), then there is no need to use function arguments,
// just a "void xxx (void)" method.
//
class TPuck
{
public:
bool _go;
TPuck(int pVal):_go(true)
{
Value = pVal;
}
TPuck():_go(true)
{
}
int Value;
int vc;
void setValue(int p){Value = p; }
void super()
{
while (_go)
{
cout <<"super " << vc << endl;
sleep(2);
}
cout <<"end of super " << vc << endl;
}
void vusss()
{
while (_go)
{
cout <<"vusss " << vc << endl;
sleep(2);
}
cout <<"end of vusss " << vc << endl;
}
void fazz()
{
static int vcount =0;
vc = vcount++;
cout <<"Puck create instance: " << vc << endl;
while (_go)
{
cout <<"fazz " << vc << endl;
sleep(2);
}
cout <<"Completed TPuck..fazz instance "<< vc << endl;
}
void stop()
{
_go=false;
cout << endl << "Stopping TPuck...." << vc << endl;
}
};
int main(int argc, char* argv[])
{
// just a number of instances of the class I need to make threads
int vN = 3;
// This object will be your threads maker.
// Just declare an instance for each class
// you need to create method threads
//
CSThread<TPuck> PuckThreadMaker;
//
// Hera I'm telling which methods should be threaded
PuckThreadMaker.addThread(&TPuck::fazz, "fazz1");
PuckThreadMaker.addThread(&TPuck::fazz, "fazz2");
PuckThreadMaker.addThread(&TPuck::fazz, "fazz3");
PuckThreadMaker.addThread(&TPuck::vusss, "vusss");
PuckThreadMaker.addThread(&TPuck::super, "super");
PuckThreadMaker.addStopMethod(&TPuck::stop);
for (int ii=0; ii<vN; ++ii)
{
// Creating instances of the class that I need to run threads.
// If you already have your instances, then just pass them as a
// parameter such "mythreadmaker.addElement(&myinstance);"
TPuck * vOne = PuckThreadMaker.addElement();
}
if (PuckThreadMaker.run() == true)
{
cout <<"All running!" << endl;
}
else
{
cout <<"Error: not all threads running!" << endl;
}
sleep(1);
cout <<"Totale threads creati: " << PuckThreadMaker.runningThreadsCount() << endl;
for (unsigned int ii=0; ii<vN; ++ii)
{
unsigned int kk=0;
cout <<"status for element " << ii << " is " << PuckThreadMaker.getStatusStr(ii, kk++) << endl;
cout <<"status for element " << ii << " is " << PuckThreadMaker.getStatusStr(ii, kk++) << endl;
cout <<"status for element " << ii << " is " << PuckThreadMaker.getStatusStr(ii, kk++) << endl;
cout <<"status for element " << ii << " is " << PuckThreadMaker.getStatusStr(ii, kk++) << endl;
cout <<"status for element " << ii << " is " << PuckThreadMaker.getStatusStr(ii, kk++) << endl;
}
sleep(2);
PuckThreadMaker.stopAll();
cout <<"\n\nAfter the stop!!!!" << endl;
sleep(2);
for (int ii=0; ii<vN; ++ii)
{
int kk=0;
cout <<"status for element " << ii << " is " << PuckThreadMaker.getStatusStr(ii, kk++) << endl;
cout <<"status for element " << ii << " is " << PuckThreadMaker.getStatusStr(ii, kk++) << endl;
cout <<"status for element " << ii << " is " << PuckThreadMaker.getStatusStr(ii, kk++) << endl;
cout <<"status for element " << ii << " is " << PuckThreadMaker.getStatusStr(ii, kk++) << endl;
cout <<"status for element " << ii << " is " << PuckThreadMaker.getStatusStr(ii, kk++) << endl;
}
sleep(5);
return 0;
}
// End of test.cc
I created a universal nvm that works on both Unix (bash) and Windows, base on another simple nvm.
It doesn't need admin on Windows, but requires PowerShell 4+ and the right to execute scripts.
What is Angular CLI Budgets? Budgets is one of the less known features of the Angular CLI. It’s a rather small but a very neat feature!
As applications grow in functionality, they also grow in size. Budgets is a feature in the Angular CLI which allows you to set budget thresholds in your configuration to ensure parts of your application stay within boundaries which you set — Official Documentation
Or in other words, we can describe our Angular application as a set of compiled JavaScript files called bundles which are produced by the build process. Angular budgets allows us to configure expected sizes of these bundles. More so, we can configure thresholds for conditions when we want to receive a warning or even fail build with an error if the bundle size gets too out of control!
How To Define A Budget? Angular budgets are defined in the angular.json file. Budgets are defined per project which makes sense because every app in a workspace has different needs.
Thinking pragmatically, it only makes sense to define budgets for the production builds. Prod build creates bundles with “true size” after applying all optimizations like tree-shaking and code minimization.
Oops, a build error! The maximum bundle size was exceeded. This is a great signal that tells us that something went wrong…
First Approach: Are your files gzipped?
Generally speaking, gzipped file has only about 20% the size of the original file, which can drastically decrease the initial load time of your app. To check if you have gzipped your files, just open the network tab of developer console. In the “Response Headers”, if you should see “Content-Encoding: gzip”, you are good to go.
How to gzip? If you host your Angular app in most of the cloud platforms or CDN, you should not worry about this issue as they probably have handled this for you. However, if you have your own server (such as NodeJS + expressJS) serving your Angular app, definitely check if the files are gzipped. The following is an example to gzip your static assets in a NodeJS + expressJS app. You can hardly imagine this dead simple middleware “compression” would reduce your bundle size from 2.21MB to 495.13KB.
const compression = require('compression')
const express = require('express')
const app = express()
app.use(compression())
Second Approach:: Analyze your Angular bundle
If your bundle size does get too big you may want to analyze your bundle because you may have used an inappropriate large-sized third party package or you forgot to remove some package if you are not using it anymore. Webpack has an amazing feature to give us a visual idea of the composition of a webpack bundle.
It’s super easy to get this graph.
npm install -g webpack-bundle-analyzer
ng build --stats-json
(don’t use flag --prod
). By enabling --stats-json
you will get an additional file stats.jsonwebpack-bundle-analyzer ./dist/stats.json
and your browser will pop up the page at localhost:8888. Have fun with it.ref 1: How Did Angular CLI Budgets Save My Day And How They Can Save Yours
Take a look at http://www.csharp-examples.net/download-files/ and msdn docs on webclient http://msdn.microsoft.com/en-us/library/system.net.webclient.aspx
My suggestion is try the synchronous download as its more straightforward. you might get ideas on whether webclient parameters are wrong or the file is in incorrect format while trying this.
Here is a code sample..
private void btnDownload_Click(object sender, EventArgs e)
{
string filepath = textBox1.Text;
WebClient webClient = new WebClient();
webClient.DownloadFileCompleted += new AsyncCompletedEventHandler(Completed);
webClient.DownloadProgressChanged += new DownloadProgressChangedEventHandler(ProgressChanged);
webClient.DownloadFileAsync(new Uri("http://mysite.com/myfile.txt"), filepath);
}
private void ProgressChanged(object sender, DownloadProgressChangedEventArgs e)
{
progressBar.Value = e.ProgressPercentage;
}
private void Completed(object sender, AsyncCompletedEventArgs e)
{
MessageBox.Show("Download completed!");
}
You cannot iterate over them directly, but you can find all the keys and then just sort them.
var a = new Array();
a['b'] = 1;
a['z'] = 1;
a['a'] = 1;
function keys(obj)
{
var keys = [];
for(var key in obj)
{
if(obj.hasOwnProperty(key))
{
keys.push(key);
}
}
return keys;
}
keys(a).sort(); // ["a", "b", "z"]
However there is no need to make the variable 'a' an array. You are really just using it as an object and should create it like this:
var a = {};
a["key"] = "value";
So the problem with a lot of these solutions is you're assuming the window appears instantly (nothing happens instantly, and things happen significantly less instantly in IE). Also you're assuming that there will only be one window prior to clicking the element, which is not always the case. Also IE will not return the window handles in a predictable order. So I would do the following.
public String clickAndSwitchWindow(WebElement elementToClick, Duration
timeToWaitForWindowToAppear) {
Set<String> priorHandles = _driver.getWindowHandles();
elementToClick.click();
try {
new WebDriverWait(_driver,
timeToWaitForWindowToAppear.getSeconds()).until(
d -> {
Set<String> newHandles = d.getWindowHandles();
if (newHandles.size() > priorHandles.size()) {
for (String newHandle : newHandles) {
if (!priorHandles.contains(newHandle)) {
d.switchTo().window(newHandle);
return true;
}
}
return false;
} else {
return false;
}
});
} catch (Exception e) {
Logging.log_AndFail("Encountered error while switching to new window after clicking element " + elementToClick.toString()
+ " seeing error: \n" + e.getMessage());
}
return _driver.getWindowHandle();
}
That's because you missed ELSE.
"Returns the result for the first condition that is true. If there was no matching result value, the result after ELSE is returned, or NULL if there is no ELSE part." (http://dev.mysql.com/doc/refman/5.0/en/control-flow-functions.html#operator_case)
Well if you have N objects and you need to get the Title of all of them you have to use a loop. If you only need the title and you really want to improve this, maybe you can make a separated array containing only the title, this would improve the performance. You need to define the amount of memory available and the amount of objects that you can handle before saying this can damage the performance, and in any case the solution would be changing the design of the program not the algorithm.
To be a little more concrete about how RSA uses properties of prime numbers, the RSA algorithm depends critically upon Euler's Theorem, which states that for relatively prime numbers "a" and "N", a^e is congruent to 1 modulo N, where e is the Euler's totient function of N.
Where do primes come into that? To compute the Euler's totient function of N efficiently requires knowing the prime factorization of N. In the case of the RSA algorithm, where N = pq for some primes "p" and "q", then e = (p - 1)(q - 1) = N - p - q + 1. But without knowing p and q, computation of e is very difficult.
More abstractly, many crypotgraphic protocols use various trapdoor functions, functions which are easy to compute but difficult to invert. Number theory is a rich source of such trapdoor functions (such as multiplication of large prime numbers), and prime numbers are absolutely central to number theory.
Set 'center_horizontal' and 'center_vertical' or just 'center' of the layout_gravity attribute of the widget
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MovieActivity"
android:id="@+id/mainContainerMovie"
>
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#3a3f51b5"
/>
<ProgressBar
android:id="@+id/movieprogressbar"
style="?android:attr/progressBarStyle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical|center_horizontal" />
</FrameLayout>
You remove the original image here:
newImg.animate(css, SPEED, function() {
img.remove();
newImg.removeClass('morpher');
(callback || function() {})();
});
And all that's left behind is newImg
. Then you reset link references the image using #rocket
:
$("#rocket").attr('src', ...
But your newImg
doesn't have an id
attribute let alone an id
of rocket
.
To fix this, you need to remove img
and then set the id
attribute of newImg
to rocket
:
newImg.animate(css, SPEED, function() {
var old_id = img.attr('id');
img.remove();
newImg.attr('id', old_id);
newImg.removeClass('morpher');
(callback || function() {})();
});
And then you'll get the shiny black rocket back again: http://jsfiddle.net/ambiguous/W2K9D/
UPDATE: A better approach (as noted by mellamokb) would be to hide the original image and then show it again when you hit the reset button. First, change the reset action to something like this:
$("#resetlink").click(function(){
clearInterval(timerRocket);
$("#wrapper").css('top', '250px');
$('.throbber, .morpher').remove(); // Clear out the new stuff.
$("#rocket").show(); // Bring the original back.
});
And in the newImg.load
function, grab the images original size:
var orig = {
width: img.width(),
height: img.height()
};
And finally, the callback for finishing the morphing animation becomes this:
newImg.animate(css, SPEED, function() {
img.css(orig).hide();
(callback || function() {})();
});
New and improved: http://jsfiddle.net/ambiguous/W2K9D/1/
The leaking of $('.throbber, .morpher')
outside the plugin isn't the best thing ever but it isn't a big deal as long as it is documented.
.currencyinput {_x000D_
border: 1px inset #ccc;_x000D_
padding-bottom: 1px;//FOR IE & Chrome_x000D_
}_x000D_
.currencyinput input {_x000D_
border: 0;_x000D_
}
_x000D_
<span class="currencyinput">$<input type="text" name="currency"></span>
_x000D_
alter user username superuser;
If you start 64bit Android Studio, you have to add in User Variable as
"JAVA_HOME"
"C:\Program Files\Java\jdk1.8.0_31"
If 32bit
"JAVA_HOME"
"C:\Program Files\Java\jdk1.8.0_31"
and don't put \bin
end
then comes to system variable
select and edit "path" as
"C:\Program Files\Java\jdk1.8.0_31\bin"
here u should must put " bin;
" at end also put ; together.....Okey do it
Another approach:
$('.your-container').datepicker({
beforeShow: function(input, datepickerInstance) {
datepickerInstance.dpDiv.css('font-size', '11px');
}
});
: this is one way to comment
As a result:
:: this will also work
:; so will this
:! and this
Above styles work outside codeblocks, otherwise:
REM is another way to comment.
Even more useful, if you have multiple parameters you can access any/all of them with:
_mock.Setup(x => x.DoSomething(It.IsAny<string>(),It.IsAny<string>(),It.IsAny<string>())
.Returns((string a, string b, string c) => string.Concat(a,b,c));
You always need to reference all the arguments, to match the method's signature, even if you're only going to use one of them.
this Func may help you . it add every list object to grid view
private void show_data()
{
BindingSource Source = new BindingSource();
for (int i = 0; i < CC.Contects.Count; i++)
{
Source.Add(CC.Contects.ElementAt(i));
};
Data_View.DataSource = Source;
}
I write this for simple database app
@list($url) = explode("?", $url, 2);
ArrayList get(int index)
method is used for fetching an element from the list. We need to specify the index while calling get method and it returns the value present at the specified index.
public Element get(int index)
Example : In below example we are getting few elements of an arraylist by using get method.
package beginnersbook.com;
import java.util.ArrayList;
public class GetMethodExample {
public static void main(String[] args) {
ArrayList<String> al = new ArrayList<String>();
al.add("pen");
al.add("pencil");
al.add("ink");
al.add("notebook");
al.add("book");
al.add("books");
al.add("paper");
al.add("white board");
System.out.println("First element of the ArrayList: "+al.get(0));
System.out.println("Third element of the ArrayList: "+al.get(2));
System.out.println("Sixth element of the ArrayList: "+al.get(5));
System.out.println("Fourth element of the ArrayList: "+al.get(3));
}
}
Output:
First element of the ArrayList: pen
Third element of the ArrayList: ink
Sixth element of the ArrayList: books
Fourth element of the ArrayList: notebook
You can also modify the {debug} function in modifier.debug_print_var.php, in order to limit its recursion into objects.
Around line 45, before :
$results .= '<br>' . str_repeat(' ', $depth * 2)
. '<b> ->' . strtr($curr_key, $_replace) . '</b> = '
. smarty_modifier_debug_print_var($curr_val, ++$depth, $length);
After :
$max_depth = 10;
$results .= '<br>' . str_repeat(' ', $depth * 2)
. '<b> ->' . strtr($curr_key, $_replace) . '</b> = '
. ($depth > $max_depth ? 'Max recursion depth:'.(++$depth) : smarty_modifier_debug_print_var($curr_val, ++$depth, $length));
This way, Xdebug will still behave normally: limit recursion depth in var_dump and so on. As this is a smarty problem, not a Xdebug one!
The error is self explanatory. The path you are trying to access is not present.
string source_dir = "E:\\Debug\\VipBat\\{0}";
I'm sure that this is not the correct path. Debug
folder directly in E:
drive looks wrong to me. I guess there must be the project name folder directory present.
Second thing; what is {0}
in your string. I am sure that it is an argument placeholder because folder name cannot contains {0}
such name. So you need to use String.Format()
to replace the actual value.
string source_dir = String.Format("E:\\Debug\\VipBat\\{0}",variableName);
But first check the path existence that you are trying to access.
You just need to return standard ContentResult and set ContentType to "application/json". You can create custom ActionResult for it:
public class JsonStringResult : ContentResult
{
public JsonStringResult(string json)
{
Content = json;
ContentType = "application/json";
}
}
And then return it's instance:
[HttpPost]
public JsonResult UpdateBatchSearchMembers()
{
string returntext;
if (!System.IO.File.Exists(path))
returntext = Properties.Settings.Default.EmptyBatchSearchUpdate;
else
returntext = Properties.Settings.Default.ResponsePath;
return new JsonStringResult(returntext);
}
Omit the where
clause:
update mytable set
column1 = value1,
column2 = value2,
-- other column values etc
;
This will give all rows the same values.
This might not be what you want - consider truncate
then a mass insert
:
truncate mytable; -- delete all rows efficiently
insert into mytable (column1, column2, ...) values
(row1value1, row1value2, ...), -- row 1
(row2value1, row2value2, ...), -- row 2
-- etc
;
i think it should be
select convert(varchar(10),StandardCost) +'S' from DimProduct where ProductKey = 212
or
select cast(StandardCost as varchar(10)) + 'S' from DimProduct where ProductKey = 212
The cleanest way to work with it. Assuming your table is a list of integers called "dbo.tvp_Int" (Customize for your own table type)
Create this extension method...
public static void AddWithValue_Tvp_Int(this SqlParameterCollection paramCollection, string parameterName, List<int> data)
{
if(paramCollection != null)
{
var p = paramCollection.Add(parameterName, SqlDbType.Structured);
p.TypeName = "dbo.tvp_Int";
DataTable _dt = new DataTable() {Columns = {"Value"}};
data.ForEach(value => _dt.Rows.Add(value));
p.Value = _dt;
}
}
Now you can add a table valued parameter in one line anywhere simply by doing this:
cmd.Parameters.AddWithValueFor_Tvp_Int("@IDValues", listOfIds);
If your element is not directly on you scene go back to Parent to remove it
function removeEntity(object) {
var selectedObject = scene.getObjectByName(object.name);
selectedObject.parent.remove( selectedObject );
}
This question is confusing. A regular object, {}
doesn't have a length
property unless you're intending to make your own function constructor which generates custom objects which do have it ( in which case you didn't specify ).
Meaning, you have to get the "length" by a for..in
statement on the object, since length
is not set, and increment a counter.
I'm confused as to why you need the length
. Are you manually setting 0
on the object, or are you relying on custom string keys? eg obj['foo'] = 'bar';
. If the latter, again, why the need for length?
Edit #1: Why can't you just do this?
list = [ {name:'john'}, {name:'bob'} ];
Then iterate over list? The length
is already set.
There's a set_ticks()
function for axis objects.
if you want to pass POST variables, you have to use a HTML Form:
<form action="http://localhost:8080/login" method="POST" target="_blank">
<input type="text" name="cid" />
<input type="password" name="pwd" />
<input type="submit" value="open" />
</form>
or:
if you want to pass GET variables in an URL, write them without single-quotes:
http://yourdomain.com/login?cid=username&pwd=password
here's how to create the string above with javascrpt variables:
myu = document.getElementById('cid').value;
myp = document.getElementById('pwd').value;
window.open("http://localhost:8080/login?cid="+ myu +"&pwd="+ myp ,"MyTargetWindowName");
in the document with that url, you have to read the GET parameters. if it's in php, use:
$_GET['username']
be aware: to transmit passwords that way is a big security leak!
Once Java 8 is out (March 2014) you'll be able to use streams:
try (Stream<String> lines = Files.lines(Paths.get(filename), Charset.defaultCharset())) {
lines.forEachOrdered(line -> process(line));
}
Printing all the lines in the file:
try (Stream<String> lines = Files.lines(file, Charset.defaultCharset())) {
lines.forEachOrdered(System.out::println);
}
Firstly, a Java double
cannot be null, and cannot be compared with a Java null
. (The double
type is a primitive (non-reference) type and primitive types cannot be null.)
Next, if you call ResultSet.getDouble(...)
, that returns a double
not a Double
, the documented behaviour is that a NULL (from the database) will be returned as zero. (See javadoc linked above.) That is no help if zero is a legitimate value for that column.
So your options are:
use ResultSet.wasNull()
to test for a (database) NULL ... immediately after the getDouble(...)
call, or
use ResultSet.getObject(...)
, and type cast the result to Double
.
The getObject
method will deliver the value as a Double
(assuming that the column type is double
), and is documented to return null
for a NULL. (For more information, this page documents the default mappings of SQL types to Java types, and therefore what actual type you should expect getObject
to deliver.)
Your server tells you exactly what you need : [Hint: SSLProxyEngine]
You need to add that directive to your VirtualHost
before the Proxy
directives :
SSLProxyEngine on
ProxyPass /primary/store https://localhost:9763/store/
ProxyPassReverse /primary/store https://localhost:9763/store/
The following works for me and tested on Ubuntu 14.04. It is a one liner that does not require any user input.
sudo useradd -p $(openssl passwd -1 $PASS) $USERNAME
Taken from @Tralemonkey
C# 4.0 also supports optional parameters, which could be useful in some other situations. See this article.
SELECT ORDER_NO, DELIVERY_ADDRESS
from IFSAPP.PURCHASE_ORDER_TAB
where ORDER_NO in ('52000077','52000079','52000167','52000297','52000204','52000409','52000126')
ORDER BY instr('52000077,52000079,52000167,52000297,52000204,52000409,52000126',ORDER_NO)
worked really great
Use
a = sorted(a, key=lambda x: x.modified, reverse=True)
# ^^^^
On Python 2.x, the sorted
function takes its arguments in this order:
sorted(iterable, cmp=None, key=None, reverse=False)
so without the key=
, the function you pass in will be considered a cmp
function which takes 2 arguments.
The suggested edit queue is full for @tibor-udvari's excellent fetch answer, so I'll post my suggested edits as a new answer.
This function gets the content type from the header if returned, otherwise falls back on a settable default type.
async function getFileFromUrl(url, name, defaultType = 'image/jpeg'){
const response = await fetch(url);
const data = await response.blob();
return new File([data], name, {
type: response.headers.get('content-type') || defaultType,
});
}
// `await` can only be used in an async body, but showing it here for simplicity.
const file = await getFileFromUrl('https://example.com/image.jpg', 'example.jpg');
There's promise-sequence
in nodejs.
const promiseSequence = require('promise-sequence');
return promiseSequence(arr.map(el => () => doPromise(el)));
I’ve run into this problem too. I'm using Nginx with HHVM, below solution fixed my issue:
sudo semanage fcontext -a -t httpd_sys_rw_content_t "/etc/nginx/fastcgi_temp(/.*)?"
sudo restorecon -R -v /etc/nginx/fastcgi_temp
I know this is a bit old, but instead of looping through the array with a for loop, it would be much easier to use the method <array>.indexOf(<element>[, fromIndex])
It loops through an array, finding and returning the first index of a value. If the value is not contained in the array, it returns -1.
<array>
is the array to look through, <element>
is the value you are looking for, and [fromIndex]
is the index to start from (defaults to 0).
I hope this helps reduce the size of your code!
Instead of setting drawable resource through code in your activity class you can also set in XML layout:
Code is as follows:
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:src="@drawable/apple" />
Look in the control panel: the service has not been installed yet!
Click the (X) button to install apache in windows service and reboot, it should be working now.
Is just casting the value returned by time()
#include <stdio.h>
#include <time.h>
int main(void) {
printf("Timestamp: %d\n",(int)time(NULL));
return 0;
}
what you want?
$ gcc -Wall -Wextra -pedantic -std=c99 tstamp.c && ./a.out
Timestamp: 1343846167
To get microseconds since the epoch, from C11 on, the portable way is to use
int timespec_get(struct timespec *ts, int base)
Unfortunately, C11 is not yet available everywhere, so as of now, the closest to portable is using one of the POSIX functions clock_gettime
or gettimeofday
(marked obsolete in POSIX.1-2008, which recommends clock_gettime
).
The code for both functions is nearly identical:
#include <stdio.h>
#include <time.h>
#include <stdint.h>
#include <inttypes.h>
int main(void) {
struct timespec tms;
/* The C11 way */
/* if (! timespec_get(&tms, TIME_UTC)) { */
/* POSIX.1-2008 way */
if (clock_gettime(CLOCK_REALTIME,&tms)) {
return -1;
}
/* seconds, multiplied with 1 million */
int64_t micros = tms.tv_sec * 1000000;
/* Add full microseconds */
micros += tms.tv_nsec/1000;
/* round up if necessary */
if (tms.tv_nsec % 1000 >= 500) {
++micros;
}
printf("Microseconds: %"PRId64"\n",micros);
return 0;
}
No, you can't. JavaScript is executed on the client side (browser), while the session data is stored on the server.
However, you can expose session variables for JavaScript in several ways:
In JSP you'd have something like:
<input type="hidden" name="pONumb" value="${sessionScope.pONumb} />
or:
<div id="product" data-prodnumber="${sessionScope.pONumb}" />
Then in JS:
// you can find a more efficient way to select the input you want
var inputs = document.getElementsByTagName("input"), len = inputs.length, i, pONumb;
for (i = 0; i < len; i++) {
if (inputs[i].name == "pONumb") {
pONumb = inputs[i].value;
break;
}
}
or:
var product = document.getElementById("product"), pONumb;
pONumb = product.getAttribute("data-prodnumber");
The inline example is the most straightforward, but if you then want to store your JavaScript code as an external resource (the recommended way) it won't be feasible.
<script>
var pONumb = ${sessionScope.pONumb};
[...]
</script>
This is what I expected to see when I came to this question:
#!/usr/bin/env python
import pandas as pd
df = pd.DataFrame([(1, 2, 3, 4),
(5, 6, 7, 8),
(9, 0, 1, 2),
(3, 4, 5, 6)],
columns=list('abcd'),
index=['India', 'France', 'England', 'Germany'])
print(df)
gives
a b c d
India 1 2 3 4
France 5 6 7 8
England 9 0 1 2
Germany 3 4 5 6
If you use numpy
, this is easy:
slice = arr[:2,:2]
or if you want the 0's,
slice = arr[0:2,0:2]
You'll get the same result.
*note that slice
is actually the name of a builtin-type. Generally, I would advise giving your object a different "name".
Another way, if you're working with lists of lists*:
slice = [arr[i][0:2] for i in range(0,2)]
(Note that the 0's here are unnecessary: [arr[i][:2] for i in range(2)]
would also work.).
What I did here is that I take each desired row 1 at a time (arr[i]
). I then slice the columns I want out of that row and add it to the list that I'm building.
If you naively try: arr[0:2]
You get the first 2 rows which if you then slice again arr[0:2][0:2]
, you're just slicing the first two rows over again.
*This actually works for numpy arrays too, but it will be slow compared to the "native" solution I posted above.
Example is here:
Let take a string like :
XIX IXI XX X I II IIXX XXII I-I X-X -X X- X-I I-X -X- -I-X -X-I I-X- X-I- X_X _X-
Note: Underscore ( _ ) is not considered a special character in this case.
/\bX\b/g
Should begin and end with a special character or white SpaceXIX IXI XX X I II IIXX XXII I-I X-X -X X- X-I I-X -X- -I-X -X-I I-X- X-I- X_X _X-
/\bX/g
Should begin with a special character or white SpaceXIX IXI XX X I II IIXX XXII I-I X-X -X X- X-I I-X -X- -I-X -X-I I-X- X-I- X_X _X-
/X\b/g
Should end with a special character or white SpaceXIX IXI XX X I II IIXX XXII I-I X-X -X X- X-I I-X -X- -I-X -X-I I-X- X-I- X_X _X-
/\BX\B/g
XIX IXI XX X I II IIXX XXII I-I X-X -X X- X-I I-X -X- -I-X -X-I I-X- X-I- X_X _X-
/\BX/g
Should not begin with a special character or white SpaceXIX IXI XX X I II IIXX XXII I-I X-X -X X- X-I I-X -X- -I-X -X-I I-X- X-I- X_X _X-
/X\B/g
Should not end with a special character or white SpaceXIX IXI XX X I II IIXX XXII I-I X-X -X X- X-I I-X -X- -I-X -X-I I-X- X-I- X_X _X-
/\bX\B/g
Should begin and not end with a special character or white SpaceXIX IXI XX X I II IIXX XXII I-I X-X -X X- X-I I-X -X- -I-X -X-I I-X- X-I- X_X _X-
/\BX\b/g
Should not begin and should end with a special character or white SpaceXIX IXI XX X I II IIXX XXII I-I X-X -X X- X-I I-X -X- -I-X -X-I I-X- X-I- X_X _X-
I do not think you can declare a string like that in c. You may only do that for const char* and of course you can not modify a const char * as it is const.
You may use dynamic char array but you will have to take care of the reallocation.
EDIT: in fact this syntax compiles correctly. Still you can should not modify what str points to if it is initialized in the way you do it (from string literal)
Here is a side-by-side comparison of several application starters/generators and other technologies including MEAN.js, MEAN.io, and cleverstack. I keep adding alternatives as I find time and as that happens, the list of potentially provided benefits keeps growing too. Today it's up to around 1600. If anyone wants to help improve its accuracy or completeness, click the next link and do a questionnaire about something you know.
Compare app technologies project
From this database, the system generates reports like the following:
Your regexp seems to validate both the file name and the extension. Is that what you need? I'll assume it's just the extension and would use a regexp like this:
\.(jpg|gif|doc|pdf)$
And set the matching to be case insensitive.
In case someone needs to run over a table and split a field:
CREATE DEFINER=`root`@`localhost` FUNCTION `fn_split_str`($str VARCHAR(800), $delimiter VARCHAR(12), $position INT) RETURNS varchar(800) CHARSET utf8
DETERMINISTIC
BEGIN
RETURN REPLACE(
SUBSTRING(
SUBSTRING_INDEX($str, $delimiter, $position),
LENGTH(
SUBSTRING_INDEX($str, $delimiter, $position -1)
) + 1
),
$delimiter, '');
END
CREATE DEFINER=`root`@`localhost` FUNCTION `fn_split_str_to_rows`($id INT, $str VARCHAR(800), $delimiter VARCHAR(12), $empty_table BIT) RETURNS int(11)
BEGIN
DECLARE position INT;
DECLARE val VARCHAR(800);
SET position = 1;
IF $empty_table THEN
DROP TEMPORARY TABLE IF EXISTS tmp_rows;
END IF;
SET val = fn_split_str($str, ',', position);
CREATE TEMPORARY TABLE IF NOT EXISTS tmp_rows AS (SELECT $id as id, val as val where 1 = 2);
WHILE (val IS NOT NULL and val != '') DO
INSERT INTO tmp_rows
SELECT $id, val;
SET position = position + 1;
SET val = fn_split_str($str, ',', position);
END WHILE;
RETURN position - 1;
END
DROP TEMPORARY TABLE IF EXISTS tmp_rows;
SELECT SUM(fn_split_str_to_rows(ID, FieldToSplit, ',', 0))
FROM MyTable;
SELECT * FROM tmp_rows;
You can use the id to join to other table.
In case you are only splitting one value you can use it like that
SELECT fn_split_str_to_rows(null, 'AAA,BBB,CCC,DDD,EEE,FFF,GGG', ',', 1);
SELECT * FROM tmp_rows;
We don't need to empty the temporary table, the function will take care of that.
You can do it manually. (I know, that that isn't great solution, but..)
use while
loop till the result
hasn't a value
kickOff().then(function(result) {
while(true){
if (result === undefined) continue;
else {
$("#output").append(result);
return;
}
}
});
This is my version referring @Virako 's code snippet
def adjust_column_width_from_col(ws, min_row, min_col, max_col):
column_widths = []
for i, col in \
enumerate(
ws.iter_cols(min_col=min_col, max_col=max_col, min_row=min_row)
):
for cell in col:
value = cell.value
if value is not None:
if isinstance(value, str) is False:
value = str(value)
try:
column_widths[i] = max(column_widths[i], len(value))
except IndexError:
column_widths.append(len(value))
for i, width in enumerate(column_widths):
col_name = get_column_letter(min_col + i)
value = column_widths[i] + 2
ws.column_dimensions[col_name].width = value
And how to use is as follows,
adjust_column_width_from_col(ws, 1,1, ws.max_column)
Use git add -A
, this will include the deleted files.
Note: use git rm
for certain files.
At first glance your original attempt seems pretty close. I'm assuming that clockDate is a DateTime fields so try this:
IF (NOT EXISTS(SELECT * FROM Clock WHERE cast(clockDate as date) = '08/10/2012')
AND userName = 'test')
BEGIN
INSERT INTO Clock(clockDate, userName, breakOut)
VALUES(GetDate(), 'test', GetDate())
END
ELSE
BEGIN
UPDATE Clock
SET breakOut = GetDate()
WHERE Cast(clockDate AS Date) = '08/10/2012' AND userName = 'test'
END
Note that getdate gives you the current date. If you are trying to compare to a date (without the time) you need to cast or the time element will cause the compare to fail.
If clockDate is NOT datetime field (just date), then the SQL engine will do it for you - no need to cast on a set/insert statement.
IF (NOT EXISTS(SELECT * FROM Clock WHERE clockDate = '08/10/2012')
AND userName = 'test')
BEGIN
INSERT INTO Clock(clockDate, userName, breakOut)
VALUES(GetDate(), 'test', GetDate())
END
ELSE
BEGIN
UPDATE Clock
SET breakOut = GetDate()
WHERE clockDate = '08/10/2012' AND userName = 'test'
END
As others have pointed out, the merge statement is another way to tackle this same logic. However, in some cases, especially with large data sets, the merge statement can be prohibitively slow, causing a lot of tran log activity. So knowing how to logic it out as shown above is still a valid technique.
Different browsers do this differently.
First open console window by right clicking on the page and selecting "Inspect Element", or by hitting F12.
In the console, type...
Firefox
functionName.toSource()
Chrome
functionName
Swift 2 and below
let date = NSDate()
var dateFormatter = NSDateFormatter()
dateFormatter.dateFormat = "MM-dd-yyyy"
var dateString = dateFormatter.stringFromDate(date)
println(dateString)
And in Swift 3 and higher this would now be written as:
let date = Date()
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "MM-dd-yyyy"
var dateString = dateFormatter.string(from: date)
WorksheetFunction Transpose()
Instead of copying, pasting via PasteSpecial, and using the Transpose
option you can simply type a formula
=TRANSPOSE(Sheet1!A1:A5)
or if you prefer VBA:
Dim v
v = WorksheetFunction.Transpose(Sheet1.Range("A1:A5"))
Sheet2.Range("A1").Resize(1, UBound(v)) = v
Note: alternatively you could use late-bound Application.Transpose
instead.
MS help reference states that having a current version of Microsoft 365, one can simply input the formula in the top-left-cell of the target range, otherwise the formula must be entered as a legacy array formula via Ctrl+Shift+Enter to confirm it.
Versions Excel vers. 2007+, Mac since 2011, Excel for Microsoft 365
I had a situation where I needed two 'if' statements that could both go true and an 'else' or default if neither were true, not sure if this is an improvement on Jossef's answer but it seemed cleaner to me:
ng-class="{'class-one' : value.one , 'class-two' : value.two}" class="else-class"
Where value.one and value.two are true, they take precedent over the .else-class
An instance variable is a variable that is a member of an instance of a class (i.e., associated with something created with a new
), whereas a class variable is a member of the class itself.
Every instance of a class will have its own copy of an instance variable, whereas there is only one of each static (or class) variable, associated with the class itself.
What’s the difference between a class variable and an instance variable?
This test class illustrates the difference:
public class Test {
public static String classVariable = "I am associated with the class";
public String instanceVariable = "I am associated with the instance";
public void setText(String string){
this.instanceVariable = string;
}
public static void setClassText(String string){
classVariable = string;
}
public static void main(String[] args) {
Test test1 = new Test();
Test test2 = new Test();
// Change test1's instance variable
test1.setText("Changed");
System.out.println(test1.instanceVariable); // Prints "Changed"
// test2 is unaffected
System.out.println(test2.instanceVariable); // Prints "I am associated with the instance"
// Change class variable (associated with the class itself)
Test.setClassText("Changed class text");
System.out.println(Test.classVariable); // Prints "Changed class text"
// Can access static fields through an instance, but there still is only one
// (not best practice to access static variables through instance)
System.out.println(test1.classVariable); // Prints "Changed class text"
System.out.println(test2.classVariable); // Prints "Changed class text"
}
}
HTML and XML entities are just a way of referencing a Unicode code-point in a way that reliably works regardless of the encoding of the actual page, making them useful for using esoteric Unicode characters in a page using 7-bit ASCII or some other encoding scheme, ideally on a one-off basis. They're also used to escape the <
, >
, "
and &
characters as these are reserved in SGML.
Anyway, Unicode has a number of tick/check characters, as per Wikipedia ( http://en.wikipedia.org/wiki/Tick_(check_mark) ).
Ideally you should save/store your HTML in a Unicode format like UTF-8 or 16, thus obviating the need to use HTML entities to represent a Unicode character. Nonetheless use: ✔
✔.
✔
✔
Is using hex notation and is the same as
$#10004;
(as 2714
in base 16 is the same as 10004
in base 10)
This will give you the result you're giving as an example:
SELECT DISTINCT a, b
FROM pairs
To improve a little bit upon @eclipse's answer: In Javaland a request parameter map is usually represented as a Map<String, String[]>
, a Map<String, List<String>>
or possibly some kind of MultiValueMap<String, String>
which is sort of the same thing. In any case: a parameter can usually have multiple values. A Java 8 solution would therefore be something along these lines:
public String getQueryString(HttpServletRequest request, String encoding) {
Map<String, String[]> parameters = request.getParameterMap();
return parameters.entrySet().stream()
.flatMap(entry -> encodeMultiParameter(entry.getKey(), entry.getValue(), encoding))
.reduce((param1, param2) -> param1 + "&" + param2)
.orElse("");
}
private Stream<String> encodeMultiParameter(String key, String[] values, String encoding) {
return Stream.of(values).map(value -> encodeSingleParameter(key, value, encoding));
}
private String encodeSingleParameter(String key, String value, String encoding) {
return urlEncode(key, encoding) + "=" + urlEncode(value, encoding);
}
private String urlEncode(String value, String encoding) {
try {
return URLEncoder.encode(value, encoding);
} catch (UnsupportedEncodingException e) {
throw new IllegalArgumentException("Cannot url encode " + value, e);
}
}
My SUN Unix has a lot of limitations, even "$@" was not interpreted as desired. My workaround is ${@}. For example,
#!/bin/ksh
find ./ -type f | xargs grep "${@}"
By the way, I had to have this particular script because my Unix also does not support grep -r
(almost 10 years later...)
From iOS 13 the iPad's user agent has changed to Mac OS, for example:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0 Safari/605.1.15
You can also call cancelAll
on the notification manager, so you don't even have to worry about the notification ids.
NotificationManager notifManager= (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
notifManager.cancelAll();
EDIT : I was downvoted so maybe I should specify that this will only remove the notification from your application.
This is what worked for me on Windows. The cause being multiple python installations
python -m pip uninstall pip setuptools
Label lblText; //initialized elsewhere
void AssignLabel(string text)
{
if (InvokeRequired)
{
BeginInvoke((Action<string>)AssignLabel, text);
return;
}
lblText.Text = text;
}
Note that BeginInvoke()
is preferred over Invoke()
because it's less likely to cause deadlocks (however, this is not an issue here when just assigning text to a label):
When using Invoke()
you are waiting for the method to return. Now, it may be that you do something in the invoked code that will need to wait for the thread, which may not be immediately obvious if it's buried in some functions that you are calling, which itself may happen indirectly via event handlers. So you would be waiting for the thread, the thread would be waiting for you and you are deadlocked.
This actually caused some of our released software to hang. It was easy enough to fix by replacing Invoke()
with BeginInvoke()
. Unless you have a need for synchronous operation, which may be the case if you need a return value, use BeginInvoke()
.
In general you add all prerequisite steps to setUp and all clean-up steps to tearDown.
You can read more with examples here.
When a setUp() method is defined, the test runner will run that method prior to each test. Likewise, if a tearDown() method is defined, the test runner will invoke that method after each test.
For example you have a test that requires items to exist, or certain state - so you put these actions(creating object instances, initializing db, preparing rules and so on) into the setUp.
Also as you know each test should stop in the place where it was started - this means that we have to restore app state to it's initial state - e.g close files, connections, removing newly created items, calling transactions callback and so on - all these steps are to be included into the tearDown.
So the idea is that test itself should contain only actions that to be performed on the test object to get the result, while setUp and tearDown are the methods to help you to leave your test code clean and flexible.
You can create a setUp and tearDown for a bunch of tests and define them in a parent class - so it would be easy for you to support such tests and update common preparations and clean ups.
If you are looking for an easy example please use the following link with example
Why not try FROM_UNIXTIME(unix_timestamp, format)
?
No you can't pass parameters to the run()
method. The signature tells you that (it has no parameters). Probably the easiest way to do this would be to use a purpose-built object that takes a parameter in the constructor and stores it in a final variable:
public class WorkingTask implements Runnable
{
private final Object toWorkWith;
public WorkingTask(Object workOnMe)
{
toWorkWith = workOnMe;
}
public void run()
{
//do work
}
}
//...
Thread t = new Thread(new WorkingTask(theData));
t.start();
Once you do that - you have to be careful of the data integrity of the object you pass into the 'WorkingTask'. The data will now exist in two different threads so you have to make sure it is Thread Safe.
you just have to add this.
public int getActionBarHeight() {
int height;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
height = getActivity().getActionBar().getHeight();
} else {
height = ((ActionBarActivity) getActivity()).getSupportActionBar().getHeight();
}
return height;
}
You could also try something like this:
input[type="radio"] {_x000D_
margin-top: -1px;_x000D_
vertical-align: middle;_x000D_
}
_x000D_
<label class="child"><input id = "warm" type="radio" name="weathertype" value="warm" checked> Warm<br></label>_x000D_
<label class="child1"><input id = "cold" type="radio" name="weathertype" value="cold" checked> Cold<br></label>
_x000D_
Here is an attempt to solve some of the problems with other solutions:
The code I wrote is configurable. You can choose on what actions the select all behavior should occur by setting three readonly fields: SelectOnKeybourdFocus
, SelectOnMouseLeftClick
, SelectOnMouseRightClick
.
The downside of this solution is that it's more complex and static state is stored. Its seems like an ugly struggle with the defaults behavior of the TextBox
control. Still, it works and all the code is hidden in the Attached Property container class.
public static class TextBoxExtensions
{
// Configuration fields to choose on what actions the select all behavior should occur.
static readonly bool SelectOnKeybourdFocus = true;
static readonly bool SelectOnMouseLeftClick = true;
static readonly bool SelectOnMouseRightClick = true;
// Remembers a right click context menu that is opened
static ContextMenu ContextMenu = null;
// Remembers if the first action on the TextBox is mouse down
static bool FirstActionIsMouseDown = false;
public static readonly DependencyProperty SelectOnFocusProperty =
DependencyProperty.RegisterAttached("SelectOnFocus", typeof(bool), typeof(TextBoxExtensions), new PropertyMetadata(false, new PropertyChangedCallback(OnSelectOnFocusChanged)));
[AttachedPropertyBrowsableForChildren(IncludeDescendants = false)]
[AttachedPropertyBrowsableForType(typeof(TextBox))]
public static bool GetSelectOnFocus(DependencyObject obj)
{
return (bool)obj.GetValue(SelectOnFocusProperty);
}
public static void SetSelectOnFocus(DependencyObject obj, bool value)
{
obj.SetValue(SelectOnFocusProperty, value);
}
private static void OnSelectOnFocusChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
if (!(d is TextBox textBox)) return;
if (GetSelectOnFocus(textBox))
{
// Register events
textBox.PreviewMouseDown += TextBox_PreviewMouseDown;
textBox.PreviewMouseUp += TextBox_PreviewMouseUp;
textBox.GotKeyboardFocus += TextBox_GotKeyboardFocus;
textBox.LostKeyboardFocus += TextBox_LostKeyboardFocus;
}
else
{
// Unregister events
textBox.PreviewMouseDown -= TextBox_PreviewMouseDown;
textBox.PreviewMouseUp -= TextBox_PreviewMouseUp;
textBox.GotKeyboardFocus -= TextBox_GotKeyboardFocus;
textBox.LostKeyboardFocus -= TextBox_LostKeyboardFocus;
}
}
private static void TextBox_PreviewMouseDown(object sender, MouseButtonEventArgs e)
{
if (!(sender is TextBox textBox)) return;
// If mouse clicked and focus was not in text box, remember this is the first click.
// This will enable to prevent select all when the text box gets the keyboard focus
// right after the mouse down event.
if (!textBox.IsKeyboardFocusWithin)
{
FirstActionIsMouseDown = true;
}
}
private static void TextBox_PreviewMouseUp(object sender, MouseButtonEventArgs e)
{
if (!(sender is TextBox textBox)) return;
// Select all only if:
// 1) SelectOnMouseLeftClick/SelectOnMouseRightClick is true and left/right button was clicked
// 3) This is the first click
// 4) No text is selected
if (((SelectOnMouseLeftClick && e.ChangedButton == MouseButton.Left) ||
(SelectOnMouseRightClick && e.ChangedButton == MouseButton.Right)) &&
FirstActionIsMouseDown &&
string.IsNullOrEmpty(textBox.SelectedText))
{
textBox.SelectAll();
}
// It is not the first click
FirstActionIsMouseDown = false;
}
private static void TextBox_GotKeyboardFocus(object sender, KeyboardFocusChangedEventArgs e)
{
if (!(sender is TextBox textBox)) return;
// Select all only if:
// 1) SelectOnKeybourdFocus is true
// 2) Focus was not previously out of the application (e.OldFocus != null)
// 3) The mouse was pressed down for the first after on the text box
// 4) Focus was not previously in the context menu
if (SelectOnKeybourdFocus &&
e.OldFocus != null &&
!FirstActionIsMouseDown &&
!IsObjectInObjectTree(e.OldFocus as DependencyObject, ContextMenu))
{
textBox.SelectAll();
}
// Forget ContextMenu
ContextMenu = null;
}
private static void TextBox_LostKeyboardFocus(object sender, KeyboardFocusChangedEventArgs e)
{
if (!(sender is TextBox textBox)) return;
// Remember ContextMenu (if opened)
ContextMenu = e.NewFocus as ContextMenu;
// Forget selection when focus is lost if:
// 1) Focus is still in the application
// 2) The context menu was not opened
if (e.NewFocus != null
&& ContextMenu == null)
{
textBox.SelectionLength = 0;
}
}
// Helper function to look if a DependencyObject is contained in the visual tree of another object
private static bool IsObjectInObjectTree(DependencyObject searchInObject, DependencyObject compireToObject)
{
while (searchInObject != null && searchInObject != compireToObject)
{
searchInObject = VisualTreeHelper.GetParent(searchInObject);
}
return searchInObject != null;
}
}
To attache the Attached Property to a TextBox
, all you need to do is add the xml namespace (xmlns
) of the Attached Property and then use it like this:
<TextBox attachedprop:TextBoxExtensions.SelectOnFocus="True"/>
Some notes about this solution:
TextBox
remembers its selection after it loses focus. I actually have overridden this behavior.TextBox
(FirstActionIsMouseDown
static field).ContextMenu
static field).The only side effect I found is when SelectOnMouseRightClick
is true. Sometimes the right-click context menu flickers when its opened and right-clicking on a blank are in the TextBox
does not do "select all".
In case of excluding test component or test configuration, Spring Boot 1.4 introduced new testing annotations @TestComponent
and @TestConfiguration
.
Edit you AssemblyInfo.cs and #if !NETCOREAPP3_0 ... #endif
using System.Reflection;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
// General Information about an assembly is controlled through the following
// set of attributes. Change these attribute values to modify the information
// associated with an assembly.
#if !NETCOREAPP3_0
[assembly: AssemblyTitle(".Net Core Testing")]
[assembly: AssemblyDescription(".Net Core")]
[assembly: AssemblyConfiguration("")]
[assembly: AssemblyCompany("")]
[assembly: AssemblyProduct(".Net Core")]
[assembly: AssemblyCopyright("Copyright ©")]
[assembly: AssemblyTrademark("")]
[assembly: AssemblyCulture("")]
// Setting ComVisible to false makes the types in this assembly not visible
// to COM components. If you need to access a type in this assembly from
// COM, set the ComVisible attribute to true on that type.
[assembly: ComVisible(false)]
// The following GUID is for the ID of the typelib if this project is exposed to COM
[assembly: Guid("000b119c-2445-4977-8604-d7a736003d34")]
// Version information for an assembly consists of the following four values:
//
// Major Version
// Minor Version
// Build Number
// Revision
//
// You can specify all the values or you can default the Build and Revision Numbers
// by using the '*' as shown below:
// [assembly: AssemblyVersion("1.0.*")]
[assembly: AssemblyVersion("1.0.0.0")]
[assembly: AssemblyFileVersion("1.0.0.0")]
#endif
I ran into the same issue and found another way to do this. It worked for in my case as it was a relatively small application.
First, the user will a click button in the component which needs to be printed. This will set a flag that can be accessed by the app component. Like so
.html file
<button mat-button (click)="printMode()">Print Preview</button>
.ts file
printMode() {
this.utilities.printMode = true;
}
In the html of the app component, we hide everything except the router-outlet. Something like below
<div class="container">
<app-header *ngIf="!utilities.printMode"></app-header>
<mat-sidenav-container>
<mat-sidenav *ngIf="=!utilities.printMode">
<app-sidebar></app-sidebar>
</mat-sidenav>
<mat-sidenav-content>
<router-outlet></router-outlet>
</mat-sidenav-content>
</mat-sidenav-container>
</div>
With similar ngIf conidtions, we can also adjust the html template of the component to only show or hide things in printMode. So that the user will see only what needs to get printed when print preview is clicked.
We can now simply print or go back to normal mode with the below code
.html file
<button mat-button class="doNotPrint" (click)="print()">Print</button>
<button mat-button class="doNotPrint" (click)="endPrint()">Close</button>
.ts file
print() {
window.print();
}
endPrint() {
this.utilities.printMode = false;
}
.css file (so that the print and close button's don't get printed)
@media print{
.doNotPrint{display:none !important;}
}
Writing this piece of code fixed my problem:
requests.get(link, headers = {'User-agent': 'your bot 0.1'})
If you have
varname <- c("a", "b", "d")
you can do
get(varname[1]) + 2
for
a + 2
or
assign(varname[1], 2 + 2)
for
a <- 2 + 2
So it looks like you use GET when you want to evaluate a formula that uses a variable (such as a concatenate), and ASSIGN when you want to assign a value to a pre-declared variable.
Syntax for assign: assign(x, value)
x: a variable name, given as a character string. No coercion is done, and the first element of a character vector of length greater than one will be used, with a warning.
value: value to be assigned to x.
replace below lines:
<permission android:name="com.myapp.permission.C2D_MESSAGE" android:protectionLevel="signature" />
<uses-permission android:name="com.myapp.permission.C2D_MESSAGE"
android:protectionLevel="signature" />
Use pyplot.text()
(import matplotlib.pyplot as plt
)
import matplotlib.pyplot as plt
x=[1,2,3]
y=[9,8,7]
plt.plot(x,y)
for a,b in zip(x, y):
plt.text(a, b, str(b))
plt.show()
Here is my code of custom UITableView
subclass, which expand UITextView
at the table cell, without reloading (and lost keyboard focus):
- (void)textViewDidChange:(UITextView *)textView {
CGFloat textHeight = [textView sizeThatFits:CGSizeMake(self.width, MAXFLOAT)].height;
// Check, if text height changed
if (self.previousTextHeight != textHeight && self.previousTextHeight > 0) {
[self beginUpdates];
// Calculate difference in height
CGFloat difference = textHeight - self.previousTextHeight;
// Update currently editing cell's height
CGRect editingCellFrame = self.editingCell.frame;
editingCellFrame.size.height += difference;
self.editingCell.frame = editingCellFrame;
// Update UITableView contentSize
self.contentSize = CGSizeMake(self.contentSize.width, self.contentSize.height + difference);
// Scroll to bottom if cell is at the end of the table
if (self.editingNoteInEndOfTable) {
self.contentOffset = CGPointMake(self.contentOffset.x, self.contentOffset.y + difference);
} else {
// Update all next to editing cells
NSInteger editingCellIndex = [self.visibleCells indexOfObject:self.editingCell];
for (NSInteger i = editingCellIndex; i < self.visibleCells.count; i++) {
UITableViewCell *cell = self.visibleCells[i];
CGRect cellFrame = cell.frame;
cellFrame.origin.y += difference;
cell.frame = cellFrame;
}
}
[self endUpdates];
}
self.previousTextHeight = textHeight;
}
Look for jQuery site
HTML:
<form>
<input class="target" type="text" value="Field 1">
<select class="target">
<option value="option1" selected="selected">Option 1</option>
<option value="option2">Option 2</option>
</select>
</form>
<div id="other">
Trigger the handler
</div>
JAVASCRIPT:
$( ".target" ).change(function() {
alert( "Handler for .change() called." );
});
jQuery's example:
To add a validity test to all text input elements:
$( "input[type='text']" ).change(function() {
// Check input( $( this ).val() ) for validity here
});
The accepted answer doesn't differentiate between a first run and subsequent upgrades. Just setting a boolean in shared preferences will only tell you if it is the first run after the app is first installed. Later if you want to upgrade your app and make some changes on the first run of that upgrade, you won't be able to use that boolean any more because shared preferences are saved across upgrades.
This method uses shared preferences to save the version code rather than a boolean.
import com.yourpackage.BuildConfig;
...
private void checkFirstRun() {
final String PREFS_NAME = "MyPrefsFile";
final String PREF_VERSION_CODE_KEY = "version_code";
final int DOESNT_EXIST = -1;
// Get current version code
int currentVersionCode = BuildConfig.VERSION_CODE;
// Get saved version code
SharedPreferences prefs = getSharedPreferences(PREFS_NAME, MODE_PRIVATE);
int savedVersionCode = prefs.getInt(PREF_VERSION_CODE_KEY, DOESNT_EXIST);
// Check for first run or upgrade
if (currentVersionCode == savedVersionCode) {
// This is just a normal run
return;
} else if (savedVersionCode == DOESNT_EXIST) {
// TODO This is a new install (or the user cleared the shared preferences)
} else if (currentVersionCode > savedVersionCode) {
// TODO This is an upgrade
}
// Update the shared preferences with the current version code
prefs.edit().putInt(PREF_VERSION_CODE_KEY, currentVersionCode).apply();
}
You would probably call this method from onCreate
in your main activity so that it is checked every time your app starts.
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
checkFirstRun();
}
private void checkFirstRun() {
// ...
}
}
If you needed to, you could adjust the code to do specific things depending on what version the user previously had installed.
Idea came from this answer. These also helpful:
If you are having trouble getting the version code, see the following Q&A:
Is there a prize for being lazy and using the transpose function of NumPy arrays? ;)
import numpy as np
a = np.array([(1,2,3), (4,5,6)])
b = a.transpose()