i found following code working for ckeditor 5
ClassicEditor
.create( document.querySelector( '#editor' ) )
.then( editor => {
editor.model.document.on( 'change:data', () => {
editorData = editor.getData();
} );
} )
.catch( error => {
console.error( error );
} );
I have posted one small tutorial about integrating the FileBrowser available in old FCKEditor into CKEditor.
http://www.mixedwaves.com/2010/02/integrating-fckeditor-filemanager-in-ckeditor/
It contains step by step instructions for doing so and its pretty simple. I hope anybody in search of this will find this tutorial helpful.
I'm fairly confident that providing code-examples would help you receive a solution must faster. If you can upload an example of this issue somewhere, or provide the markup so we can test it on our localhosts, you'll have a better chance of getting some valuable input.
The problem with questions is that they lead others to believe the person asking the question has sufficient knowledge to ask the question. In programming that isn't always the case. There may have been something you missed, or accidentally jipped. Without others having eyes on your code, they have to assume you missed nothing, and overlooked nothing.
#At Controller
def branch
@data = Model.all
render json: JSON.pretty_generate(@data.as_json)
end
Datetime.TimeOfDay
returns a TimeSpan
and might be what you are looking for.
I think it is important to mention, now that this question is over 1 year old, that Socket.IO has since come out and seems to be the primary way to work with sockets in the browser now; it is also compatible with Node.js as far as I know.
I'm surprised no one has mentioned using regular expressions via re.sub()
:
import re
print re.sub(r'([\"])', r'\\\1', 'it\'s "this"') # it's \"this\"
print re.sub(r"([\'])", r'\\\1', 'it\'s "this"') # it\'s "this"
print re.sub(r'([\" \'])', r'\\\1', 'it\'s "this"') # it\'s\ \"this\"
Important things to note:
\
as well as the character(s) you're looking for.
You're going to be using \
to escape your characters, so you need to escape
that as well.([\"])
, so that the substitution
pattern can use the found character when it adds \
in front of it. (That's what
\1
does: uses the value of the first parenthesized group.)r
in front of r'([\"])'
means it's a raw string. Raw strings use different
rules for escaping backslashes. To write ([\"])
as a plain string, you'd need to
double all the backslashes and write '([\\"])'
. Raw strings are friendlier when
you're writing regular expressions.\
to distinguish it from a
backslash that precedes a substitution group, e.g. \1
, hence r'\\\1'
. To write
that as a plain string, you'd need '\\\\\\1'
— and nobody wants that.You can avoid the commas by using /-C on the DIR command.
FOR /F "usebackq tokens=3" %%s IN (`DIR C:\ /-C /-O /W`) DO (
SET FREE_SPACE=%%s
)
ECHO FREE_SPACE is %FREE_SPACE%
If you want to compare the available space to the space needed, you could do something like the following. I specified the number with thousands separator, then removed them. It is difficult to grasp the number without commas. The SET /A is nice, but it stops working with large numbers.
SET EXITCODE=0
SET NEEDED=100,000,000
SET NEEDED=%NEEDED:,=%
IF %FREE_SPACE% LSS %NEEDED% (
ECHO Not enough.
SET EXITCODE=1
)
EXIT /B %EXITCODE%
As previously stated there are two different problems: 1) IE8 doesn't support media queries 2) respond.js used in conjunction with cross-domain css files must be included as described before.
If you want to use BootstrapCDN here's a working example:
<link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.0.3/css/bootstrap.min.css">
<!--[if lt IE 9]>
<link href="//netdna.bootstrapcdn.com/respond-proxy.html" id="respond-proxy" rel="respond-proxy" />
<link href="img/ie/respond.proxy.gif" id="respond-redirect" rel="respond-redirect" />
<script src="js/ie/html5shiv.js"></script>
<script src="js/ie/respond.min.js"></script>
<script src="js/ie/respond.proxy.js"></script>
<![endif]-->
Also make sure to copy respond.proxy.gif, respond.min.js and response.proxy.js in local directories
This looks like a case of inlining gone bad. On an x86 core, the jitter has the ebx, edx, esi and edi register available for general purpose storage of local variables. The ecx register becomes available in a static method, it doesn't have to store this. The eax register often is needed for calculations. But these are 32-bit registers, for variables of type long it must use a pair of registers. Which are edx:eax for calculations and edi:ebx for storage.
Which is what stands out in the disassembly for the slow version, neither edi nor ebx are used.
When the jitter can't find enough registers to store local variables then it must generate code to load and store them from the stack frame. That slows down code, it prevents a processor optimization named "register renaming", an internal processor core optimization trick that uses multiple copies of a register and allows super-scalar execution. Which permits several instructions to run concurrently, even when they use the same register. Not having enough registers is a common problem on x86 cores, addressed in x64 which has 8 extra registers (r9 through r15).
The jitter will do its best to apply another code generation optimization, it will try to inline your Fibo() method. In other words, not make a call to the method but generate the code for the method inline in the Main() method. Pretty important optimization that, for one, makes properties of a C# class for free, giving them the perf of a field. It avoids the overhead of making the method call and setting up its stack frame, saves a couple of nanoseconds.
There are several rules that determine exactly when a method can be inlined. They are not exactly documented but have been mentioned in blog posts. One rule is that it won't happen when the method body is too large. That defeats the gain from inlining, it generates too much code that doesn't fit as well in the L1 instruction cache. Another hard rule that applies here is that a method won't be inlined when it contains a try/catch statement. The background behind that one is an implementation detail of exceptions, they piggy-back onto Windows' built-in support for SEH (Structure Exception Handling) which is stack-frame based.
One behavior of the register allocation algorithm in the jitter can be inferred from playing with this code. It appears to be aware of when the jitter is trying to inline a method. One rule it appears to use that only the edx:eax register pair can be used for inlined code that has local variables of type long. But not edi:ebx. No doubt because that would be too detrimental to the code generation for the calling method, both edi and ebx are important storage registers.
So you get the fast version because the jitter knows up front that the method body contains try/catch statements. It knows it can never be inlined so readily uses edi:ebx for storage for the long variable. You got the slow version because the jitter didn't know up front that inlining wouldn't work. It only found out after generating the code for the method body.
The flaw then is that it didn't go back and re-generate the code for the method. Which is understandable, given the time constraints it has to operate in.
This slow-down doesn't occur on x64 because for one it has 8 more registers. For another because it can store a long in just one register (like rax). And the slow-down doesn't occur when you use int instead of long because the jitter has a lot more flexibility in picking registers.
You start a thread which runs the static method SumData
. However, SumData
calls SetTextboxText
which isn't static. Thus you need an instance of your form to call SetTextboxText
.
var y = $(window).scrollTop(); //your current y position on the page
$(window).scrollTop(y+150);
Code example of ItemListener
implementation
class ItemChangeListener implements ItemListener{
@Override
public void itemStateChanged(ItemEvent event) {
if (event.getStateChange() == ItemEvent.SELECTED) {
Object item = event.getItem();
// do something with object
}
}
}
Now we will get only selected item.
Then just add listener to your JComboBox
addItemListener(new ItemChangeListener());
Thread safe simply means that it may be used from multiple threads at the same time without causing problems. This can mean that access to any resources are synchronized, or whatever.
<input type="checkbox" name="check1" value="checkbox" onchange="showMe('div1')" /> checkbox
<div id="div1" style="display:none;">NOTICE</div>
<script type="text/javascript">
<!--
function showMe (box) {
var chboxs = document.getElementById("div1").style.display;
var vis = "none";
if(chboxs=="none"){
vis = "block"; }
if(chboxs=="block"){
vis = "none"; }
document.getElementById(box).style.display = vis;
}
//-->
</script>
Here is the best solution if you want some extra flexibility and don't want to change your model field. Just add this custom validator:
#Imports
from django.core.exceptions import ValidationError
class validate_range_or_null(object):
compare = lambda self, a, b, c: a > c or a < b
clean = lambda self, x: x
message = ('Ensure this value is between %(limit_min)s and %(limit_max)s (it is %(show_value)s).')
code = 'limit_value'
def __init__(self, limit_min, limit_max):
self.limit_min = limit_min
self.limit_max = limit_max
def __call__(self, value):
cleaned = self.clean(value)
params = {'limit_min': self.limit_min, 'limit_max': self.limit_max, 'show_value': cleaned}
if value: # make it optional, remove it to make required, or make required on the model
if self.compare(cleaned, self.limit_min, self.limit_max):
raise ValidationError(self.message, code=self.code, params=params)
And it can be used as such:
class YourModel(models.Model):
....
no_dependents = models.PositiveSmallIntegerField("How many dependants?", blank=True, null=True, default=0, validators=[validate_range_or_null(1,100)])
The two parameters are max and min, and it allows nulls. You can customize the validator if you like by getting rid of the marked if statement or change your field to be blank=False, null=False in the model. That will of course require a migration.
Note: I had to add the validator because Django does not validate the range on PositiveSmallIntegerField, instead it creates a smallint (in postgres) for this field and you get a DB error if the numeric specified is out of range.
Hope this helps :) More on Validators in Django.
PS. I based my answer on BaseValidator in django.core.validators, but everything is different except for the code.
Careful with "foo".rstrip(os.linesep)
: That will only chomp the newline characters for the platform where your Python is being executed. Imagine you're chimping the lines of a Windows file under Linux, for instance:
$ python
Python 2.7.1 (r271:86832, Mar 18 2011, 09:09:48)
[GCC 4.5.0 20100604 [gcc-4_5-branch revision 160292]] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import os, sys
>>> sys.platform
'linux2'
>>> "foo\r\n".rstrip(os.linesep)
'foo\r'
>>>
Use "foo".rstrip("\r\n")
instead, as Mike says above.
You can also use std::vectors
for achieving this:
using std::vector< std::vector<int> >
Example:
std::vector< std::vector<int> > a;
//m * n is the size of the matrix
int m = 2, n = 4;
//Grow rows by m
a.resize(m);
for(int i = 0 ; i < m ; ++i)
{
//Grow Columns by n
a[i].resize(n);
}
//Now you have matrix m*n with default values
//you can use the Matrix, now
a[1][0]=1;
a[1][1]=2;
a[1][2]=3;
a[1][3]=4;
//OR
for(i = 0 ; i < m ; ++i)
{
for(int j = 0 ; j < n ; ++j)
{ //modify matrix
int x = a[i][j];
}
}
I think op wants to know what the font that is used on a webpage is, and hoped that info might be findable in the 'inspect' pane.
Try adding the Whatfont Chrome extension.
Keep it simple.
func NowAsUnixMilli() int64 {
return time.Now().UnixNano() / 1e6
}
Omit the parenthesis:
ALTER TABLE User
ADD CONSTRAINT userProperties
FOREIGN KEY(properties)
REFERENCES Properties(ID)
Delete the local.properties
from the android folder in your react project and try it.
I've done this and succeeded.
http://dev.mysql.com/doc/refman/5.0/en/date-and-time-functions.html#function_now
"NOW() returns a constant time that indicates the time at which the statement began to execute. (Within a stored routine or trigger, NOW() returns the time at which the routine or triggering statement began to execute.) This differs from the behavior for SYSDATE(), which returns the exact time at which it executes as of MySQL 5.0.13. "
EhCache provides a SizeOf class that will try to use the Instrumentation agent and will fall back to a different approach if the agent is not loaded or cannot be loaded (details here).
Also see the agent from Heinz Kabutz.
Wanted to comment on the last answer, but without login it’s only possible to make an answer:
To get rid of the "read only error" just stop the device immediately after it’s ready. My script looks as follows:
#!/bin/bash
~/bin/AndroidSdk/tools/emulator @Nexus_6P_API_23 -no-boot-anim &
adb wait-for-device
adb shell stop
adb remount
adb push GmsCore.apk /system/priv-app
adb push GoogleServicesFramework.apk /system/priv-app
adb push GoogleLoginService.apk /system/priv-app
adb push Phonesky.apk /system/priv-app
adb shell start
If the goal is to have a reusable RestTemplate which is in general useful for attaching the same header to a series of similar request a org.springframework.boot.web.client.RestTemplateCustomizer
parameter can be used with a RestTemplateBuilder
:
String accessToken= "<the oauth 2 token>";
RestTemplate restTemplate = new RestTemplateBuilder(rt-> rt.getInterceptors().add((request, body, execution) -> {
request.getHeaders().add("Authorization", "Bearer "+accessToken);
return execution.execute(request, body);
})).build();
try this
select * from <tablename> where 1=2
...............................................
This may help you
Defining a Fragment
create xml file for fragment view fragment_abc.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent" android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="TextView" />
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button" />
</LinearLayout>
create fragment ABCFragment.java
import androidx.fragment.app.Fragment;
public class FooFragment extends Fragment {
// The onCreateView method is called when Fragment should create its View object hierarchy,
// either dynamically or via XML layout inflation.
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup parent, Bundle
savedInstanceState) {
// Defines the xml file for the fragment
return inflater.inflate(R.layout.fragment_abc, parent, false);
}
// This event is triggered soon after onCreateView().
// Any view setup should occur here. E.g., view lookups and attaching view listeners.
@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
// Setup any handles to view objects here
// EditText etFoo = (EditText) view.findViewById(R.id.etFoo);
}
}
Add frameLayout in your activity
<FrameLayout
android:id="@+id/your_placeholder"
android:layout_width="match_parent"
android:layout_height="match_parent">
now in activity, add following method
protected void setFragment() {
// Begin the transaction
FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
// Replace the contents of the container with the new fragment
ft.replace(R.id.fragment_container, new ABCFragment());
// or ft.add(R.id.your_placeholder, new ABCFragment());
// Complete the changes added above
ft.commit();
}
reference : https://guides.codepath.com/android/creating-and-using-fragments#defining-a-fragment
None of the above worked for me. In the end I simply used this:
INSERT INTO [Destination_Table_Name]([Field_Name])
SELECT CONCAT('#',CAST([Field_Name] AS decimal(38,0))) [Field_Name]
FROM [dbo].[Source_Table_Name] WHERE ISNUMERIC([CIRCUIT_NUMBER]) = 1
INSERT INTO [Destination_Table_Name]([Field_Name])
SELECT [Field_Name]
FROM [dbo].[Source_Table_Name] WHERE ISNUMERIC([CIRCUIT_NUMBER]) <> 1
You are passing wrong mode to you view. Your view is looking for @model IEnumerable<Standings.Models.Teams>
and you are passing var model = tm.Name.ToList();
name list. You have to pass list of Teams.
You have to pass following model
var model = new List<Teams>();
model.Add(new Teams { Name = new List<string>(){"Sky","ABC"}});
model.Add(new Teams { Name = new List<string>(){"John","XYZ"} });
return View(model);
jsonb
in Postgres 9.4+You can use the same query as below, just with jsonb_array_elements()
.
But rather use the jsonb
"contains" operator @>
in combination with a matching GIN index on the expression data->'objects'
:
CREATE INDEX reports_data_gin_idx ON reports
USING gin ((data->'objects') jsonb_path_ops);
SELECT * FROM reports WHERE data->'objects' @> '[{"src":"foo.png"}]';
Since the key objects
holds a JSON array, we need to match the structure in the search term and wrap the array element into square brackets, too. Drop the array brackets when searching a plain record.
More explanation and options:
json
in Postgres 9.3+Unnest the JSON array with the function json_array_elements()
in a lateral join in the FROM
clause and test for its elements:
SELECT data::text, obj
FROM reports r, json_array_elements(r.data#>'{objects}') obj
WHERE obj->>'src' = 'foo.png';
The CTE (WITH
query) just substitutes for a table reports
.
Or, equivalent for just a single level of nesting:
SELECT *
FROM reports r, json_array_elements(r.data->'objects') obj
WHERE obj->>'src' = 'foo.png';
->>
, ->
and #>
operators are explained in the manual.
Both queries use an implicit JOIN LATERAL
.
Closely related:
You can also count on multiple groups and their intersection:
self.session.query(func.count(Table.column1),Table.column1, Table.column2).group_by(Table.column1, Table.column2).all()
The query above will return counts for all possible combinations of values from both columns.
You just need to write the first query as a subquery (derived table), inside parentheses, pick an alias for it (t
below) and alias the columns as well.
The DISTINCT
can also be safely removed as the internal GROUP BY
makes it redundant:
SELECT DATE(`date`) AS `date` , COUNT(`player_name`) AS `player_count`
FROM (
SELECT MIN(`date`) AS `date`, `player_name`
FROM `player_playtime`
GROUP BY `player_name`
) AS t
GROUP BY DATE( `date`) DESC LIMIT 60 ;
Since the COUNT
is now obvious that is only counting rows of the derived table, you can replace it with COUNT(*)
and further simplify the query:
SELECT t.date , COUNT(*) AS player_count
FROM (
SELECT DATE(MIN(`date`)) AS date
FROM player_playtime
GROUP BY player_name
) AS t
GROUP BY t.date DESC LIMIT 60 ;
Try the SetField method:
By passing column object :
table.Rows[rowIndex].SetField(column, value);
By Passing column index :
table.Rows[rowIndex].SetField(0 /*column index*/, value);
By Passing column name as string :
table.Rows[rowIndex].SetField("product_name" /*columnName*/, value);
This thread is ancient, but I wasn't happy with any of the given answers, and ended up writing my own. I'm sharing it now:
We start with:
Sub ResetWSFilters(ws as worksheet)
If ws.FilterMode Then
ws.ShowAllData
Else
End If
'This gets rid of "normal" filters - but tables will remain filtered
For Each listObj In ws.ListObjects
If listObj.ShowHeaders Then
listObj.AutoFilter.ShowAllData
listObj.Sort.SortFields.Clear
End If
Next listObj
'And this gets rid of table filters
End Sub
We can feed a specific worksheet to this macro which will unfilter just that one worksheet. Useful if you need to make sure just one worksheet is clear. However, I usually want to do the entire workbook
Sub ResetAllWBFilters(wb as workbook)
Dim ws As Worksheet
Dim wb As Workbook
Dim listObj As ListObject
For Each ws In wb.Worksheets
If ws.FilterMode Then
ws.ShowAllData
Else
End If
'This removes "normal" filters in the workbook - however, it doesn't remove table filters
For Each listObj In ws.ListObjects
If listObj.ShowHeaders Then
listObj.AutoFilter.ShowAllData
listObj.Sort.SortFields.Clear
End If
Next listObj
Next
'And this removes table filters. You need both aspects to make it work.
End Sub
You can use this, by, for example, opening a workbook you need to deal with and resetting their filters before doing anything with it:
Sub ExampleOpen()
Set TestingWorkBook = Workbooks.Open("C:\Intel\......") 'The .open is assuming you need to open the workbook in question - different procedure if it's already open
Call ResetAllWBFilters(TestingWorkBook)
End Sub
The one I use the most: Resetting all filters in the workbook that the module is stored in:
Sub ResetFilters()
Dim ws As Worksheet
Dim wb As Workbook
Dim listObj As ListObject
Set wb = ThisWorkbook
'Set wb = ActiveWorkbook
'This is if you place the macro in your personal wb to be able to reset the filters on any wb you're currently working on. Remove the set wb = thisworkbook if that's what you need
For Each ws In wb.Worksheets
If ws.FilterMode Then
ws.ShowAllData
Else
End If
'This removes "normal" filters in the workbook - however, it doesn't remove table filters
For Each listObj In ws.ListObjects
If listObj.ShowHeaders Then
listObj.AutoFilter.ShowAllData
listObj.Sort.SortFields.Clear
End If
Next listObj
Next
'And this removes table filters. You need both aspects to make it work.
End Sub
I managed to load an application.properties file in external path while using -jar option.
The key was PropertiesLauncher.
To use PropertiesLauncher, pom.xml file must be changed like this:
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration> <!-- added -->
<layout>ZIP</layout> <!-- to use PropertiesLaunchar -->
</configuration>
</plugin>
</plugins>
</build>
For this, I referenced the following StackOverflow question: spring boot properties launcher unable to use . BTW, In Spring Boot Maven Plugin document(http://docs.spring.io/spring-boot/docs/1.1.7.RELEASE/maven-plugin/repackage-mojo.html), there is no mention that specifying ZIP triggers that PropertiesLauncher is used. (Perhaps in another document?)
After the jar file had been built, I could see that the PropertiesLauncher is used by inspecting Main-Class property in META-INF/MENIFEST.MF in the jar.
Now, I can run the jar as follows(in Windows):
java -Dloader.path=file:///C:/My/External/Dir,MyApp-0.0.1-SNAPSHOT.jar -jar MyApp-0.0.1-SNAPSHOT.jar
Note that the application jar file is included in loader.path.
Now an application.properties file in C:\My\External\Dir\config is loaded.
As a bonus, any file (for example, static html file) in that directory can also be accessed by the jar since it's in the loader path.
As for the non-jar (expanded) version mentioned in UPDATE 2, maybe there was a classpath order problem.
You should use response.content
in this case:
with open('/tmp/metadata.pdf', 'wb') as f:
f.write(response.content)
From the document:
You can also access the response body as bytes, for non-text requests:
>>> r.content b'[{"repository":{"open_issues":0,"url":"https://github.com/...
So that means: response.text
return the output as a string object, use it when you're downloading a text file. Such as HTML file, etc.
And response.content
return the output as bytes object, use it when you're downloading a binary file. Such as PDF file, audio file, image, etc.
You can also use response.raw
instead. However, use it when the file which you're about to download is large. Below is a basic example which you can also find in the document:
import requests
url = 'http://www.hrecos.org//images/Data/forweb/HRTVBSH.Metadata.pdf'
r = requests.get(url, stream=True)
with open('/tmp/metadata.pdf', 'wb') as fd:
for chunk in r.iter_content(chunk_size):
fd.write(chunk)
chunk_size
is the chunk size which you want to use. If you set it as 2000
, then requests will download that file the first 2000
bytes, write them into the file, and do this again, again and again, unless it finished.
So this can save your RAM. But I'd prefer use response.content
instead in this case since your file is small. As you can see use response.raw
is complex.
Relates:
If you want to do it from properties, you can do this by setting the Format
property of DateTimePicker
to DateTimePickerFormat.Time
and ShowUpDown
property to true
. Also, customFormat
can be set in properties.
Try this, it will surely work:
driver.findElement(By.xpath("//label[text()='User Name:']/following::div/input")).sendKeys("UserName" + Keys.TAB);
Create a table with the set you want to export and then use the command line utility pg_dump to export to a file:
create table export_table as
select id, name, city
from nyummy.cimory
where city = 'tokyo'
$ pg_dump --table=export_table --data-only --column-inserts my_database > data.sql
--column-inserts
will dump as insert commands with column names.
--data-only
do not dump schema.
As commented below, creating a view in instead of a table will obviate the table creation whenever a new export is necessary.
In Python, curly braces are used to define a dictionary.
a={'one':1, 'two':2, 'three':3}
a['one']=1
a['three']=3
In other languages, { } are used as part of the flow control. Python however used indentation as its flow control because of its focus on readable code.
for entry in entries:
code....
There's a little easter egg in Python when it comes to braces. Try running this on the Python Shell and enjoy.
from __future__ import braces
Try to Use Flex as that is the new standard of html5.
http://jsfiddle.net/maxspan/1b431hxm/
<div id="row1">
<div id="column1">I am column one</div>
<div id="column2">I am column two</div>
</div>
#row1{
display:flex;
flex-direction:row;
justify-content: space-around;
}
#column1{
display:flex;
flex-direction:column;
}
#column2{
display:flex;
flex-direction:column;
}
E.g if you have submit button on form ,inorder to stop its propogation simply write event.preventDefault(); in the function which is called upon clicking submit button or enter button.
Guava offers Lists#reverse(List)
and ImmutableList#reverse()
. As in most cases for Guava, the former delegates to the latter if the argument is an ImmutableList
, so you can use the former in all cases. These do not create new copies of the list but just "reversed views" of it.
Example
List reversed = ImmutableList.copyOf(myList).reverse();
Using jQuery 1.9 and above:
$("#mySelect :selected").prop('selected', false);
In python, Tkinter was a default package, you can repair the installation and select Tcl/Tk. When you run this, DDL should be installed like so:
When you read in the year month day hour minutes with something like nextInt()
it leaves rest of the line in the parser/buffer (even if it is blank) so when you call nextLine()
you are reading the rest of this first line.
I suggest you to use scan.next()
instead of scan.nextLine()
.
I found that doing it in two relatively simple steps seemed to work quite well. The first css definition for ul sets the base indent that you want for the list as a whole. The second definition sets the indent value for each nested list item within it. In my case they are the same, but you can obviously pick whatever you want.
ul {
margin-left: 1.5em;
}
ul > ul {
margin-left: 1.5em;
}
Using :
Set the head of the list to it bottom lv.setStackFromBottom(true);
Worked for me and the list is scrolled to the bottom automatically when it is first brought into visibility. The list then scrolls as it should with TRANSCRIPT_MODE_ALWAYS_SCROLL
.
This can be a way too:
if (set -u; : $HOME) 2> /dev/null
...
...
http://unstableme.blogspot.com/2007/02/checks-whether-envvar-is-set-or-not.html
System.out.printf("%.2f", number);
BUT, this will round the number to the nearest decimal point you have mentioned.(As in your case you will get 3.14 since rounding 3.14159 to 2 decimal points will be 3.14)
Since the function printf will round the numbers the answers for some other numbers may look like this,
System.out.printf("%.2f", 3.14136); -> 3.14
System.out.printf("%.2f", 3.14536); -> 3.15
System.out.printf("%.2f", 3.14836); -> 3.15
If you just need to cutoff the decimal numbers and limit it to a k
decimal numbers without rounding,
lets say k = 2.
System.out.printf("%.2f", 3.14136 - 0.005); -> 3.14
System.out.printf("%.2f", 3.14536 - 0.005); -> 3.14
System.out.printf("%.2f", 3.14836 - 0.005); -> 3.14
A Third Answer
Sorry, maybe I have it correct this time...
var savedBox1, savedBox2, state1=0, state2=0;
jQuery(document).ready(function() {
jQuery(".rec1").click(function() {
if (state1==0){
savedBox1 = jQuery('#rec-box').html();
jQuery('#rec-box').html(jQuery(this).next().html());
state1 = 1;
}else{
jQuery('#rec-box').html(savedBox1);
state1 = 0;
}
});
jQuery(".rec2").click(function() {
if (state1==0){
savedBox2 = jQuery('#rec-box2').html();
jQuery('#rec-box2').html(jQuery(this).next().html());
state2 = 1;
}else{
jQuery('#rec-box2').html(savedBox2);
state2 = 0;
}
});
});
Step 1 : npm install bootstrap --save
Step : 2 : Paste below code in angular.json node_modules/bootstrap/dist/css/bootstrap.min.css
Step 3 : ng serve
1- Add a view to the content view of your cell.
2- Right click your cell.
3- Make the added view as "selectedBackgroundView"
A regular expression will do the trick with very little code:
import re
...
if re.match("^[A-Za-z0-9_-]*$", my_little_string):
# do something here
Use the following expression:
^[a-zA-Z0-9]*$
ie:
using System.Text.RegularExpressions;
Regex r = new Regex("^[a-zA-Z0-9]*$");
if (r.IsMatch(SomeString)) {
...
}
<link rel="SHORTCUT ICON" href="favicon.ico" type="image/x-icon" />
<link rel="ICON" href="favicon.ico" type="image/ico" />
Excellent tool for cross-browser favicon - http://www.convertico.com/
You could add google()
to repositories block
allprojects {
repositories {
jcenter()
maven {
url 'https://github.com/uPhyca/stetho-realm/raw/master/maven-repo'
}
maven {
url "https://jitpack.io"
}
google()
}
}
The accepted answer is problematic for http urls. Moreover Uri.LocalPath
does Windows specific conversions, and as someone pointed out leaves query strings in there. A better way is to use Uri.AbsolutePath
The correct way to do this for http urls is:
Uri uri = new Uri(hreflink);
string filename = System.IO.Path.GetFileName(uri.AbsolutePath);
For making a CORS request one must add headers to the request along with the same he needs to check of mode_header is enabled in Apache.
For enabling headers in Ubuntu:
sudo a2enmod headers
For php server to accept request from different origin use:
Header set Access-Control-Allow-Origin *
Header set Access-Control-Allow-Methods "GET, POST, PUT, DELETE"
Header always set Access-Control-Allow-Headers "x-requested-with, Content-Type, origin, authorization, accept, client-security-token"
$scope.reloadstat = function () { $state.go($state.current, {}, {reload: true}); };
Use the random
module: http://docs.python.org/library/random.html
import random
random.sample(set([1, 2, 3, 4, 5, 6]), 2)
This samples the two values without replacement (so the two values are different).
It's preferable to use context managers to close the files automatically
with open("new.txt", "r"), open('xyz.txt', 'w') as textfile, myfile:
for line in textfile:
var1, var2 = line.split(",");
myfile.writelines(var1)
There is no difference at all!
1) git checkout -b branch origin/branch
If there is no --track
and no --no-track
, --track
is assumed as default. The default can be changed with the setting branch.autosetupmerge
.
In effect, 1) behaves like git checkout -b branch --track origin/branch
.
2) git checkout --track origin/branch
“As a convenience”, --track
without -b
implies -b
and the argument to -b
is guessed to be “branch”. The guessing is driven by the configuration variable remote.origin.fetch
.
In effect, 2) behaves like git checkout -b branch --track origin/branch
.
As you can see: no difference.
But it gets even better:
3) git checkout branch
is also equivalent to git checkout -b branch --track origin/branch
if “branch” does not exist yet but “origin/branch” does1.
All three commands set the “upstream” of “branch” to be “origin/branch” (or they fail).
Upstream is used as reference point of argument-less git status
, git push
, git merge
and thus git pull
(if configured like that (which is the default or almost the default)).
E.g. git status
tells you how far behind or ahead you are of upstream, if one is configured.
git push
is configured to push the current branch upstream by default2 since git 2.0.
1 ...and if “origin” is the only remote having “branch”
2 the default (named “simple”) also enforces for both branch names to be equal
You can use enum and refer that enum in annotation field
Why not execute in backticks ?
x=`echo "$y" | tr '[:upper:]' '[:lower:]'`
This assigns the result of the command in backticks to the variable x
. (i.e. it's not particular to tr
but is a common pattern/solution for shell scripting)
You can use $(..)
instead of the backticks. See here for more info.
It allows you to add as many base type parameters in your call as you like.
addTwoEach(10, 2, 4, 6)
whereas with the second form you have to use an array as parameter
addTwoEach(new int[] {10,2,4,6})
There isn't a single answer to this question as there are too many variables, but SHA2 is not yet really cracked (see: Lifetimes of cryptographic hash functions) so it is still a good algorithm to use to store passwords in. The use of salt is good because it prevents attack from dictionary attacks or rainbow tables. Importance of a salt is that it should be unique for each password. You can use a format like [128-bit salt][512-bit password hash] when storing the hashed passwords.
The only viable way to attack is to actually calculate hashes for different possibilities of password and eventually find the right one by matching the hashes.
To give an idea about how many hashes can be done in a second, I think Bitcoin is a decent example. Bitcoin uses SHA256 and to cut it short, the more hashes you generate, the more bitcoins you get (which you can trade for real money) and as such people are motivated to use GPUs for this purpose. You can see in the hardware overview that an average graphic card that costs only $150 can calculate more than 200 million hashes/s. The longer and more complex your password is, the longer time it will take. Calculating at 200M/s, to try all possibilities for an 8 character alphanumberic (capital, lower, numbers) will take around 300 hours. The real time will most likely less if the password is something eligible or a common english word.
As such with anything security you need to look at in context. What is the attacker's motivation? What is the kind of application? Having a hash with random salt for each gives pretty good protection against cases where something like thousands of passwords are compromised.
One thing you can do is also add additional brute force protection by slowing down the hashing procedure. As you only hash passwords once, and the attacker has to do it many times, this works in your favor. The typical way to do is to take a value, hash it, take the output, hash it again and so forth for a fixed amount of iterations. You can try something like 1,000 or 10,000 iterations for example. This will make it that many times times slower for the attacker to find each password.
You might want to try kt. It's also quite faster than the bundled kafka-topics
.
This is the current most complete info description you can get out of a topic with kt:
kt topic -brokers localhost:9092 -filter my_topic_name -partitions -leaders -replicas
It also outputs as JSON, so you can pipe it to jq
for further flexibility.
Using millisecond approach can cause problems in some locales.
Lets take, for example, the difference between the two dates 03/24/2007 and 03/25/2007 should be 1 day;
However, using the millisecond route, you'll get 0 days, if you run this in the UK!
/** Manual Method - YIELDS INCORRECT RESULTS - DO NOT USE**/
/* This method is used to find the no of days between the given dates */
public long calculateDays(Date dateEarly, Date dateLater) {
return (dateLater.getTime() - dateEarly.getTime()) / (24 * 60 * 60 * 1000);
}
Better way to implement this is to use java.util.Calendar
/** Using Calendar - THE CORRECT WAY**/
public static long daysBetween(Calendar startDate, Calendar endDate) {
Calendar date = (Calendar) startDate.clone();
long daysBetween = 0;
while (date.before(endDate)) {
date.add(Calendar.DAY_OF_MONTH, 1);
daysBetween++;
}
return daysBetween;
}
CREATE TABLE someTable (
id serial PRIMARY KEY,
col1 int NOT NULL,
col2 int NOT NULL,
UNIQUE (col1, col2)
)
autoincrement
is not postgresql. You want a serial
.
If col1
and col2
make a unique and can't be null then they make a good primary key:
CREATE TABLE someTable (
col1 int NOT NULL,
col2 int NOT NULL,
PRIMARY KEY (col1, col2)
)
Here:
window.onload = function start() {
slide();
}
function slide() {
var num = 0;
for (num=0;num==10;) {
setTimeout("document.getElementById('container').style.marginLeft='-600px'",3000);
setTimeout("document.getElementById('container').style.marginLeft='-1200px'",6000);
setTimeout("document.getElementById('container').style.marginLeft='-1800px'",9000);
setTimeout("document.getElementById('container').style.marginLeft='0px'",12000);
}
}
That makes it keep looping alright! That's why it isn't runnable here.
This worked for me.
You need to run it twice once for globals followed by locals
for name in dir():
if not name.startswith('_'):
del globals()[name]
for name in dir():
if not name.startswith('_'):
del locals()[name]
Looping through an array of objects is a pretty fundamental functionality. This is what works for me.
var person = [];_x000D_
person[0] = {_x000D_
firstName: "John",_x000D_
lastName: "Doe",_x000D_
age: 60_x000D_
};_x000D_
_x000D_
var i, item;_x000D_
_x000D_
for (i = 0; i < person.length; i++) {_x000D_
for (item in person[i]) {_x000D_
document.write(item + ": " + person[i][item] + "<br>");_x000D_
}_x000D_
}
_x000D_
Thanks for the instructive posts. I'd just like to keep a note that if you're getting "TypeError: foodo() got multiple values for keyword argument 'thing'", it may also be that you're mistakenly passing the 'self' as a parameter when calling the function (probably because you copied the line from the class declaration - it's a common error when one's in a hurry).
Why don't you use a List<People>
instead of a List<List<string>>
?
I've had a similar issue with one of my phones. I was unable to connect and use usb debugging on any of my computers. In the end, I had to restart the usb debugging on the phone manually [doing so using the Developer menu was not enough].
There's only one command you have to run on your phone [I did it using Terminal Emulator
app]:
adb usb
And that was it.
Hope this helps someone in the future.
You can use jquery for create element on the fly
$('#form').append('<input type="hidden" name="fieldname" value="fieldvalue" />');
or other way
$('<input>').attr({
type: 'hidden',
id: 'fieldId',
name: 'fieldname'
}).appendTo('form')
The error message "Please update your includePath" does not necessarily mean there is actually a problem with the includePath
. The problem may be that VSCode is using the wrong compiler or wrong IntelliSense mode. I have written instructions in this answer on how to troubleshoot and align your VSCode C++ configuration with your compiler and project.
You can use Environment.Exit(0)
and Application.Exit
.
Environment.Exit()
: terminates this process and gives the underlying operating system the specified exit code.
Do you need to look up objects by the key? If not, consider using List<Tuple<string, string>>
or List<KeyValuePair<string, string>>
if you're not using .NET 4.
I think you are looking for std::any_of
, which will return a true/false answer to detect if an element is in a container (array, vector, deque, etc.)
int val = SOME_VALUE; // this is the value you are searching for
bool exists = std::any_of(std::begin(myArray), std::end(myArray), [&](int i)
{
return i == val;
});
If you want to know where the element is, std::find
will return an iterator to the first element matching whatever criteria you provide (or a predicate you give it).
int val = SOME_VALUE;
int* pVal = std::find(std::begin(myArray), std::end(myArray), val);
if (pVal == std::end(myArray))
{
// not found
}
else
{
// found
}
This is for mac or ubuntu user, try this on terminal
curl -sS https://getcomposer.org/installer | sudo php -- --install-dir=/usr/local/bin --filename=composer
Easiest way is to use the built-in feature of SQL Management Studio.
Right-click the database, go to tasks, Generate Scripts, and walk through the wizard. You can choose what objects to script, and it'll make it all for you.
Now if you are trying to make your OWN script to do the same thing, you're probably up for a lot of work...
Perl:
@m=`ls -ltr dir | grep ^d | awk '{print \$6,\$7,\$8,\$9}'`;
foreach $i (@m)
{
print "$i\n";
}
I use the following code to solve my question. It works. But as we all know, I work around a country's mile to solve it. So, is there a short cut for that? Thanks
def filter_null(field : Any) : Int = field match {
case null => 0
case _ => 1
}
val test = train_event_join.join(
user_friends_pair,
train_event_join("user_id") === user_friends_pair("user_id") &&
train_event_join("event_owner") === user_friends_pair("friend_id"),
"left"
).select(
train_event_join("user_id"),
train_event_join("event_id"),
train_event_join("invited"),
train_event_join("day_diff"),
train_event_join("interested"),
train_event_join("event_owner"),
user_friends_pair("friend_id")
).rdd.map{
line => (
line(0).toString.toLong,
line(1).toString.toLong,
line(2).toString.toLong,
line(3).toString.toLong,
line(4).toString.toLong,
line(5).toString.toLong,
filter_null(line(6))
)
}.toDF("user_id", "event_id", "invited", "day_diff", "interested", "event_owner", "creator_is_friend")
Had to look it up in the specs:
Class's getResource() - documentation states the difference:
This method delegates the call to its class loader, after making these changes to the resource name: if the resource name starts with "/", it is unchanged; otherwise, the package name is prepended to the resource name after converting "." to "/". If this object was loaded by the bootstrap loader, the call is delegated to ClassLoader.getSystemResource.
I had this error using the Mongo 2.2 driver for PHP:
$collection = $db->selectCollection('post');
$collection->ensureIndex(array('someField', 'someOtherField', 'yetAnotherField'));
^^DOESN'T WORK
$collection = $db->selectCollection('post');
$collection->ensureIndex(array('someField', 'someOtherField'));
$collection->ensureIndex(array('yetAnotherField'));
^^ WORKS! (?!)
In light of those TOS alterations last year we built an API that gives access to Google's search. It was for our own use only but after some requests we decided to open it up. We're planning to add additional search engines in the future!
Should anyone be looking for an easy way to implement / acquire search results you are free to sign up and give the REST API a try: https://searchapi.io
It returns JSON results and should be easy enough to implement with the detailed docs.
It's a shame that Bing and Yahoo are miles ahead on Google in this regard. Their APIs aren't cheap, but at least available.
add delim_whitespace=True
argument, it's faster than regex.
expanding on the answer above the 'each' function will return you the table-cell html object. wrapping that in $() will then allow you to perform jquery actions on it.
$(this).find('td').each (function( column, td) {
$(td).blah
});
It seems to me that your Hibernate libraries are not found (NoClassDefFoundError: org/hibernate/boot/archive/scan/spi/ScanEnvironment
as you can see above).
Try checking to see if Hibernate core is put in as dependency:
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>5.0.11.Final</version>
<scope>compile</scope>
</dependency>
It is not clear to me what you mean by "escape an executable which is running", but ctrl-z will put a process into the background and return control to the command line. You can then use the fg command to bring the program back into the foreground.
Try to use
table {
table-layout: auto;
}
If you use Bootstrap, class table
has table-layout: fixed;
by default.
I read an article a while ago that talked about locking down every class as much as possible. Make everything final and private unless you have an immediate need to expose some data or functionality to the outside world. It's always easy to expand the scope to be more permissible later on, but not the other way around. First consider making as many things as possible final
which will make choosing between private
and protected
much easier.
Now if you're left with a final class, then make everything private unless something is absolutely needed by the world - make that public.
If you're left with a class that does have subclass(es), then carefully examine every property and method. First consider if you even want to expose that property/method to subclasses. If you do, then consider whether a subclass can wreak havoc on your object if it messed up the property value or method implementation in the process of overriding. If it's possible, and you want to protect your class' property/method even from subclasses (sounds ironic, I know), then make it private. Otherwise make it protected.
Disclaimer: I don't program much in Java :)
You can try it with DecimalFormat
. With this class you are very flexible in parsing your numbers.
You can exactly set the pattern you want to use.
In your case for example:
double test = 12345678;
DecimalFormat df = new DecimalFormat("#");
df.setMaximumFractionDigits(0);
System.out.println(df.format(test)); //12345678
You have to specify negative spread
in the box shadow to remove side shadow
-webkit-box-shadow: 0 10px 10px -10px #000000;
-moz-box-shadow: 0 10px 10px -10px #000000;
box-shadow: 0 10px 10px -10px #000000;
Check out http://dabblet.com/gist/9532817 and try changing properties and know how it behaves
A similar case when you need several child elements have the same height can be solved with flexbox:
https://css-tricks.com/using-flexbox/
Set display: flex;
for parent and flex: 1;
for child elements, they all will have the same height.
the "problem view" mentioned in previous answers was helpful, but i saw it didn't catch all the errors in project. After running application, it began populating other classes that had issues but didn't appear at first in that problems view.
The best tool I know is NodeJS tool: zeit/pkg
It is very easy to use (much more than Nexe, just as an example), you can just install in globally:
npm install -g pkg
to create executables for macOS, Linux and Windows:
pkg exampleApp.js
I had a bit of complicated code which used NodeJS socket server, I tried different applications, none of them created it properly, except zeit/pkg.
Be aware: rand
is predictable for an attacker and therefore probably insecure. You should definitely use SecureRandom if this is for generating passwords. I use something like this:
length = 10
characters = ('A'..'Z').to_a + ('a'..'z').to_a + ('0'..'9').to_a
password = SecureRandom.random_bytes(length).each_char.map do |char|
characters[(char.ord % characters.length)]
end.join
This is a standard problem.
Note that MySQL allows you to omit columns from the GROUP BY clause, which Standard SQL does not, but you do not get deterministic results in general when you use the MySQL facility.
SELECT *
FROM Messages AS M
JOIN (SELECT To_ID, From_ID, MAX(TimeStamp) AS Most_Recent
FROM Messages
WHERE To_ID = 12345678
GROUP BY From_ID
) AS R
ON R.To_ID = M.To_ID AND R.From_ID = M.From_ID AND R.Most_Recent = M.TimeStamp
WHERE M.To_ID = 12345678
I've added a filter on the To_ID
to match what you're likely to have. The query will work without it, but will return a lot more data in general. The condition should not need to be stated in both the nested query and the outer query (the optimizer should push the condition down automatically), but it can do no harm to repeat the condition as shown.
Your setMaxResults($limit) needs to be set on the object.
e.g.
$query_ids = $this->getEntityManager()
->createQuery(
"SELECT e_.id
FROM MuzichCoreBundle:Element e_
WHERE [...]
GROUP BY e_.id")
;
$query_ids->setMaxResults($limit);
There is no problem with whitespaces in the path since you're not using the "shell" to open the file. Here is a session from the windows console to prove the point. You're doing something else wrong
Python 2.7.2 (default, Jun 12 2011, 14:24:46) [MSC v.1500 64 bit (AMD64)] on wi
32
Type "help", "copyright", "credits" or "license" for more information.
>>> import os
>>>
>>> os.makedirs("C:/ABC/SEM 2/testfiles")
>>> open("C:/ABC/SEM 2/testfiles/all.txt","w")
<open file 'C:/ABC/SEM 2/testfiles/all.txt', mode 'w' at 0x0000000001D95420>
>>> exit()
C:\Users\Gnibbler>dir "C:\ABC\SEM 2\testfiles"
Volume in drive C has no label.
Volume Serial Number is 46A0-BB64
Directory of c:\ABC\SEM 2\testfiles
13/02/2013 10:20 PM <DIR> .
13/02/2013 10:20 PM <DIR> ..
13/02/2013 10:20 PM 0 all.txt
1 File(s) 0 bytes
2 Dir(s) 78,929,309,696 bytes free
C:\Users\Gnibbler>
Remove this:
credentials: 'include',
Try this:
background: url(../IMAGES/background.jpg) no-repeat;
background-size: auto auto;
INSERT INTO dbo.MyTable (ID, Name)
SELECT 123, 'Timmy'
UNION ALL
SELECT 124, 'Jonny'
UNION ALL
SELECT 125, 'Sally'
For SQL Server 2008, can do it in one VALUES clause exactly as per the statement in your question (you just need to add a comma to separate each values statement)...
you can also use VSCommands 2010 to run as different user:
This fixed my issue:
Go to terminal shell and type mongo
.
Then type use db_name
.
Then type:
db.createUser(
{
user: "mongodb",
pwd: "dogmeatsubparflavour1337",
roles: [ { role: "dbOwner", db: "db_name" } ]
}
)
Also try: db.getUsers()
Quick sample:
const MongoClient = require('mongodb').MongoClient;
// MongoDB Connection Info
const url = 'mongodb://mongodb:[email protected]:27017/?authMechanism=DEFAULT&authSource=db_name';
// Additional options: https://docs.mongodb.com/manual/reference/connection-string/#connection-string-options
// Use Connect Method to connect to the Server
MongoClient.connect(url)
.then((db) => {
console.log(db);
console.log('Casually connected correctly to server.');
// Be careful with db.close() when working asynchronously
db.close();
})
.catch((error) => {
console.log(error);
});
I had the same issue once, the empty POST array is caused due a redirection of the request (on your server side), fix the URL so it doesn't have to be redirected when it hits the server. For Example, if https is forced using the .htaccess file on your server side app, make sure your client request has the "https://" prefix. Usually when a redirect happens the POST array is lost. I Hope this helps!
I see rectangles and squares in every answer, and how to violate the LSP.
I'd like to show how the LSP can be conformed to with a real-world example :
<?php
interface Database
{
public function selectQuery(string $sql): array;
}
class SQLiteDatabase implements Database
{
public function selectQuery(string $sql): array
{
// sqlite specific code
return $result;
}
}
class MySQLDatabase implements Database
{
public function selectQuery(string $sql): array
{
// mysql specific code
return $result;
}
}
This design conforms to the LSP because the behaviour remains unchanged regardless of the implementation we choose to use.
And yes, you can violate LSP in this configuration doing one simple change like so :
<?php
interface Database
{
public function selectQuery(string $sql): array;
}
class SQLiteDatabase implements Database
{
public function selectQuery(string $sql): array
{
// sqlite specific code
return $result;
}
}
class MySQLDatabase implements Database
{
public function selectQuery(string $sql): array
{
// mysql specific code
return ['result' => $result]; // This violates LSP !
}
}
Now the subtypes cannot be used the same way since they don't produce the same result anymore.
There are some equivalents of constructors for when the zero values can't make sensible default values or for when some parameter is necessary for the struct initialization.
Supposing you have a struct like this :
type Thing struct {
Name string
Num int
}
then, if the zero values aren't fitting, you would typically construct an instance with a NewThing
function returning a pointer :
func NewThing(someParameter string) *Thing {
p := new(Thing)
p.Name = someParameter
p.Num = 33 // <- a very sensible default value
return p
}
When your struct is simple enough, you can use this condensed construct :
func NewThing(someParameter string) *Thing {
return &Thing{someParameter, 33}
}
If you don't want to return a pointer, then a practice is to call the function makeThing
instead of NewThing
:
func makeThing(name string) Thing {
return Thing{name, 33}
}
Reference : Allocation with new in Effective Go.
In my application which calls two services, I compared both Task.Run and Task.Factory.StartNew. I found that in my case both of them work fine. However, the second one is faster.
There's a very easy way if you were using a web application just follow this link.
just do in eclipse :
File > import > web > war file
Then select the war file of your app :)) very easy !!
I was getting errors with third party and Oledb reading of a XLSX workbook. The issue appears to be a hidden worksheet that causes a error. Unhiding the worksheet enabled the workbook to import.
var trim = your_string.replace(/^\s+|\s+$/g, '');
Try iterating through each element of the list, then splitting it at the tab character and adding it to a new list.
for i in list:
newList.append(i.split('\t')[0])
If you want to use mod_rewrite for access control you can use condition like user agent, http referrer, remote addr etc.
Example
RewriteCond %{REMOTE_ADDR} !=*.*.*.* #you ip address
RewriteRule ^$ - [F]
Refrences:
First convert LONG
type column to CLOB
type then use LIKE
condition, for example:
CREATE TABLE tbl_clob AS
SELECT to_lob(long_col) lob_col FROM tbl_long;
SELECT * FROM tbl_clob WHERE lob_col LIKE '%form%';
Regarding tables names, case, etc, the prevalent convention is:
UPPER CASE
lower_case_with_underscores
UPDATE my_table SET name = 5;
This is not written in stone, but the bit about identifiers in lower case is highly recommended, IMO. Postgresql treats identifiers case insensitively when not quoted (it actually folds them to lowercase internally), and case sensitively when quoted; many people are not aware of this idiosyncrasy. Using always lowercase you are safe. Anyway, it's acceptable to use camelCase
or PascalCase
(or UPPER_CASE
), as long as you are consistent: either quote identifiers always or never (and this includes the schema creation!).
I am not aware of many more conventions or style guides. Surrogate keys are normally made from a sequence (usually with the serial
macro), it would be convenient to stick to that naming for those sequences if you create them by hand (tablename_colname_seq
).
See also some discussion here, here and (for general SQL) here, all with several related links.
Note: Postgresql 10 introduced identity
columns as an SQL-compliant replacement for serial.
The call to InitializeComponent()
(which is usually called in the default constructor of at least Window
and UserControl
) is actually a method call to the partial class of the control (rather than a call up the object hierarchy as I first expected).
This method locates a URI to the XAML for the Window
/UserControl
that is loading, and passes it to the System.Windows.Application.LoadComponent()
static method. LoadComponent()
loads the XAML file that is located at the passed in URI, and converts it to an instance of the object that is specified by the root element of the XAML file.
In more detail, LoadComponent
creates an instance of the XamlParser
, and builds a tree of the XAML. Each node is parsed by the XamlParser.ProcessXamlNode()
. This gets passed to the BamlRecordWriter
class. Some time after this I get a bit lost in how the BAML is converted to objects, but this may be enough to help you on the path to enlightenment.
Note: Interestingly, the InitializeComponent
is a method on the System.Windows.Markup.IComponentConnector
interface, of which Window
/UserControl
implement in the partial generated class.
Hope this helps!
Docker now (version 1.13 or 17.06 and higher) has support for managing secret information. Here's an overview and more detailed documentation
Similar feature exists in kubernetes and DCOS
I needed the offset that not only included day light savings time but as a numerial. Here is the code that I used in case someone is looking for an example.
I get a response of "3.5" (3:30') which is what I would expect in Tehran , Iran in winter and "4.5" (4:30') for summer .
I also needed it as a string so I could post it to a server so you may not need the last line.
for getting currect time zone :
TimeZone tz = TimeZone.getDefault();
Date now = new Date();
//Import part : x.0 for double number
double offsetFromUtc = tz.getOffset(now.getTime()) / 3600000.0;
String m2tTimeZoneIs = Double.parseDouble(offsetFromUtc);
Let's start with a basic function which we will be pointing to:
int addInt(int n, int m) {
return n+m;
}
First thing, let's define a pointer to a function which receives 2 int
s and returns an int
:
int (*functionPtr)(int,int);
Now we can safely point to our function:
functionPtr = &addInt;
Now that we have a pointer to the function, let's use it:
int sum = (*functionPtr)(2, 3); // sum == 5
Passing the pointer to another function is basically the same:
int add2to3(int (*functionPtr)(int, int)) {
return (*functionPtr)(2, 3);
}
We can use function pointers in return values as well (try to keep up, it gets messy):
// this is a function called functionFactory which receives parameter n
// and returns a pointer to another function which receives two ints
// and it returns another int
int (*functionFactory(int n))(int, int) {
printf("Got parameter %d", n);
int (*functionPtr)(int,int) = &addInt;
return functionPtr;
}
But it's much nicer to use a typedef
:
typedef int (*myFuncDef)(int, int);
// note that the typedef name is indeed myFuncDef
myFuncDef functionFactory(int n) {
printf("Got parameter %d", n);
myFuncDef functionPtr = &addInt;
return functionPtr;
}
In addition other guys answer, its Easy to get property value of any object by use Extension method like:
public static class Helper
{
public static object GetPropertyValue(this object T, string PropName)
{
return T.GetType().GetProperty(PropName) == null ? null : T.GetType().GetProperty(PropName).GetValue(T, null);
}
}
Usage is:
Car foo = new Car();
var balbal = foo.GetPropertyValue("Make");
I'm on Windows and found my location by right clicking the Git Bash program in my Start menu and selecting Properties. The Shortcut tab shows the "Start in:" value. For me, it was %HOMEDRIVE%%HOMEPATH%
, so I opened a CMD prompt and typed echo %HOMEDRIVE%%HOMEPATH%
to see the actual location.
Use path.join(__dirname, '/start.html');
var fs = require('fs'),
path = require('path'),
filePath = path.join(__dirname, 'start.html');
fs.readFile(filePath, {encoding: 'utf-8'}, function(err,data){
if (!err) {
console.log('received data: ' + data);
response.writeHead(200, {'Content-Type': 'text/html'});
response.write(data);
response.end();
} else {
console.log(err);
}
});
You need to provide the right content type if you're using JSON dataType. Before echo-ing the json, put the correct header.
<?php
header('Content-type: application/json');
echo json_encode($response_array);
?>
Additional fix, you should check whether the query succeed or not.
if(mysql_query($query)){
$response_array['status'] = 'success';
}else {
$response_array['status'] = 'error';
}
On the client side:
success: function(data) {
if(data.status == 'success'){
alert("Thank you for subscribing!");
}else if(data.status == 'error'){
alert("Error on query!");
}
},
Hope it helps.
You have to do this on the change event of the input type file
this way:
$('#select_file').click(function() {
$('#image_file').show();
$('.btn').prop('disabled', false);
$('#image_file').change(function() {
var filename = $('#image_file').val();
$('#select_file').html(filename);
});
});?
The standard solution didn't work for me, when changing the type from TEXT to LONGTEXT.
I had to it like this:
public function up()
{
DB::statement('ALTER TABLE mytable MODIFY mycolumn LONGTEXT;');
}
public function down()
{
DB::statement('ALTER TABLE mytable MODIFY mycolumn TEXT;');
}
This could be a Doctrine issue. More information here.
Another way to do it is to use the string() method, and set the value to the text type max length:
Schema::table('mytable', function ($table) {
// Will set the type to LONGTEXT.
$table->string('mycolumn', 4294967295)->change();
});
Like @zane-hooper, I've had a similar problem on NFS. On parallel / distributed filesystems the lag between you creating a file on one machine and the other machine "seeing" it can be very large, so I could wait up to a full minute after the creation of the file before the while loop exits (and there also is an aftereffect of it "seeing" an already deleted file).
This creates the illusion that the script "doesn't work", while in fact it is the filesystem that is dropping the ball.
This took me a while to figure out, hope it saves somebody some time.
PS This also causes an annoying number of "Stale file handler" errors.
Often used with/as a part of OOAD and business modeling. The definition by Neil is correct, but it is basically identical to MVC, but just abstracted for the business. The "Good summary" is well done so I will not copy it here as it is not my work, more detailed but inline with Neil's bullet points.
Compiling the original example in Eclipse at compliance 1.8 and with annotation based null analysis enabled, we get this warning:
directPathToA(y);
^
Null type safety (type annotations): The expression of type 'Integer' needs unchecked conversion to conform to '@NonNull Integer'
This warning is worded in analogy to those warnings you get when mixing generified code with legacy code using raw types ("unchecked conversion"). We have the exact same situation here: method indirectPathToA()
has a "legacy" signature in that it doesn't specify any null contract. Tools can easily report this, so they will chase you down all alleys where null annotations need to be propagated but aren't yet.
And when using a clever @NonNullByDefault
we don't even have to say this every time.
In other words: whether or not null annotations "propagate very far" may depend on the tool you use, and on how rigorously you attend to all the warnings issued by the tool. With TYPE_USE null annotations you finally have the option to let the tool warn you about every possible NPE in your program, because nullness has become an intrisic property of the type system.
Horizontal scrollbars in a HTML Select are not natively supported. However, here's a way to create the appearance of a horizontal scrollbar:
1. First create a css class
<style type="text/css">
.scrollable{
overflow: auto;
width: 70px; /* adjust this width depending to amount of text to display */
height: 80px; /* adjust height depending on number of options to display */
border: 1px silver solid;
}
.scrollable select{
border: none;
}
</style>
2. Wrap the SELECT inside a DIV - also, explicitly set the size to the number of options.
<div class="scrollable">
<select size="6" multiple="multiple">
<option value="1" selected>option 1 The Long Option</option>
<option value="2">option 2</option>
<option value="3">option 3</option>
<option value="4">option 4</option>
<option value="5">option 5 Another Longer than the Long Option ;)</option>
<option value="6">option 6</option>
</select>
</div>
I was solving this algorithm and get stuck with the pairs part.
This explanation help me a lot https://betterexplained.com/articles/techniques-for-adding-the-numbers-1-to-100/
So to calculate the sum of series of numbers:
n(n+1)/2
But you need to calculate this
1 + 2 + ... + (n-1)
So in order to get this you can use
n(n+1)/2 - n
that is equal to
n(n-1)/2
Try:
which( !is.na(p), arr.ind=TRUE)
Which I think is just as informative and probably more useful than the output you specified, But if you really wanted the list version, then this could be used:
> apply(p, 1, function(x) which(!is.na(x)) )
[[1]]
[1] 2 3
[[2]]
[1] 4 7
[[3]]
integer(0)
[[4]]
[1] 5
[[5]]
integer(0)
Or even with smushing together with paste:
lapply(apply(p, 1, function(x) which(!is.na(x)) ) , paste, collapse=", ")
The output from which
function the suggested method delivers the row and column of non-zero (TRUE) locations of logical tests:
> which( !is.na(p), arr.ind=TRUE)
row col
[1,] 1 2
[2,] 1 3
[3,] 2 4
[4,] 4 5
[5,] 2 7
Without the arr.ind
parameter set to non-default TRUE, you only get the "vector location" determined using the column major ordering the R has as its convention. R-matrices are just "folded vectors".
> which( !is.na(p) )
[1] 6 11 17 24 32
for x in range(9):
exec("string" + str(x) + " = 'hello'")
This should work.
The solution is quite simple.
In your php.ini, just uncomment the line extension=php_gd2.dll
(or .so extension for unix systems.)
Hope it helps.
SQL-92:
DELETE Field FROM Table WHERE Field IN (SELECT TOP 1 Field FROM Table ORDER BY Field DESC)
I looked for a solution to this problem, and came across the present page. I implemented the above solution:
$("#testdiv",opener.document) //doesn't work
But it doesn't work. Maybe it did work in previous jQuery versions, but it doesn't seem to work now.
I found this working solution on another stackoverflow page: how to access parent window object using jquery?
From which I got this working solution:
window.opener.$("#testdiv") //This works.
string radioListValue = RadioButtonList.Text;
The answer is in the current spec:
The section element represents a generic section of a document or application. A section, in this context, is a thematic grouping of content, typically with a heading.
Examples of sections would be chapters, the various tabbed pages in a tabbed dialog box, or the numbered sections of a thesis. A Web site's home page could be split into sections for an introduction, news items, and contact information.
Authors are encouraged to use the article element instead of the section element when it would make sense to syndicate the contents of the element.
The section element is not a generic container element. When an element is needed for styling purposes or as a convenience for scripting, authors are encouraged to use the div element instead. A general rule is that the section element is appropriate only if the element's contents would be listed explicitly in the document's outline.
Reference:
Also see:
It looks like there's been a lot of confusion about this element's purpose, but the one thing that's agreed upon is that it is not a generic wrapper, like <div>
is. It should be used for semantic purposes, and not a CSS or JavaScript hook (although it certainly can be styled or "scripted").
A better example, from my understanding, might look something like this:
<div id="content">
<article>
<h2>How to use the section tag</h2>
<section id="disclaimer">
<h3>Disclaimer</h3>
<p>Don't take my word for it...</p>
</section>
<section id="examples">
<h3>Examples</h3>
<p>But here's how I would do it...</p>
</section>
<section id="closing_notes">
<h3>Closing Notes</h3>
<p>Well that was fun. I wonder if the spec will change next week?</p>
</section>
</article>
</div>
Note that <div>
, being completely non-semantic, can be used anywhere in the document that the HTML spec allows it, but is not necessary.
Because %
is only defined for integer types. That's the modulus operator.
5.6.2 of the standard:
The operands of * and / shall have arithmetic or enumeration type; the operands of % shall have integral or enumeration type. [...]
As Oli pointed out, you can use fmod()
. Don't forget to include math.h
.
If you are using Windows 2003 (note that windows server 2008 and later are not supported) you can use The Windows Server 2003 Resource Kit, which contains timeit.exe that displays detailed execution stats. Here is an example, timing the command "timeit -?":
C:\>timeit timeit -?
Invalid switch -?
Usage: TIMEIT [-f filename] [-a] [-c] [-i] [-d] [-s] [-t] [-k keyname | -r keyname] [-m mask] [commandline...]
where: -f specifies the name of the database file where TIMEIT
keeps a history of previous timings. Default is .\timeit.dat
-k specifies the keyname to use for this timing run
-r specifies the keyname to remove from the database. If
keyname is followed by a comma and a number then it will
remove the slowest (positive number) or fastest (negative)
times for that keyname.
-a specifies that timeit should display average of all timings
for the specified key.
-i specifies to ignore non-zero return codes from program
-d specifies to show detail for average
-s specifies to suppress system wide counters
-t specifies to tabular output
-c specifies to force a resort of the data base
-m specifies the processor affinity mask
Version Number: Windows NT 5.2 (Build 3790)
Exit Time: 7:38 am, Wednesday, April 15 2009
Elapsed Time: 0:00:00.000
Process Time: 0:00:00.015
System Calls: 731
Context Switches: 299
Page Faults: 515
Bytes Read: 0
Bytes Written: 0
Bytes Other: 298
You can get TimeIt in the Windows 2003 Resource Kit. It's not available for direct download from the Microsoft Download Center, but one can still get it from the arhive.org - Windows Server 2003 Resource Kit Tools.
what about this:
# get difference between dates `"01.12.2013"` and `"31.12.2013"`
# weeks
difftime(strptime("26.03.2014", format = "%d.%m.%Y"),
strptime("14.01.2013", format = "%d.%m.%Y"),units="weeks")
Time difference of 62.28571 weeks
# months
(as.yearmon(strptime("26.03.2014", format = "%d.%m.%Y"))-
as.yearmon(strptime("14.01.2013", format = "%d.%m.%Y")))*12
[1] 14
# quarters
(as.yearqtr(strptime("26.03.2014", format = "%d.%m.%Y"))-
as.yearqtr(strptime("14.01.2013", format = "%d.%m.%Y")))*4
[1] 4
# years
year(strptime("26.03.2014", format = "%d.%m.%Y"))-
year(strptime("14.01.2013", format = "%d.%m.%Y"))
[1] 1
as.yearmon()
and as.yearqtr()
are in package zoo
. year()
is in package lubridate
.
What do you think?
As usual in Angular, you can rely on dependency injection:
import { DatePipe } from '@angular/common';
class MyService {
constructor(private datePipe: DatePipe) {}
transformDate(date) {
return this.datePipe.transform(date, 'yyyy-MM-dd');
}
}
Add DatePipe
to your providers list in your module; if you forget to do this you'll get an error no provider for DatePipe
:
providers: [DatePipe,...]
Update Angular 6: Angular 6 now offers pretty much every formatting functions used by the pipes publicly. For example, you can now use the formatDate
function directly.
import { formatDate } from '@angular/common';
class MyService {
constructor(@Inject(LOCALE_ID) private locale: string) {}
transformDate(date) {
return formatDate(date, 'yyyy-MM-dd', this.locale);
}
}
Before Angular 5: Be warned though that the DatePipe
was relying on the Intl API until version 5, which is not supported by all browsers (check the compatibility table).
If you're using older Angular versions, you should add the Intl
polyfill to your project to avoid any problem.
See this related question for a more detailed answer.
util.component.ts
@Component({
selector: 'app-logout',
template: `<button class="btn btn-primary"(click)="logout()">Logout</button>`
})
export class LogoutComponent{}
util.module.ts
@NgModule({
imports: [...],
exports: [
LogoutComponent
],
declarations: [LogoutComponent]
})
export class AccountModule{};
LogoutComponent Needs to be exported
dashboard.module.ts
import AccountModule
in module where we want to use <app-logout>
import { AccountModule } from 'util.module';
@NgModule({
imports: [
CommonModule, AccountModule
],
declarations: [DashboardComponent]
})
export class DashboardModule { }
dashboard.component.ts
import { Component, OnInit } from '@angular/core';
@Component({
selector: 'app-dashboard',
template: `<div><app-logout></app-logout></div>`
})
export class DashboardComponent implements OnInit {
constructor() {}
ngOnInit() {}
}
I am not required to import and use CUSTOM_ELEMENTS_SCHEMA
.
however its not working when dashboard.module is lazy loaded.
When using CUSTOM_ELEMENTS_SCHEMA
in case of lazy loading, error is suppressed but the component is not added to dom.
We can install any PHP7 Extensions which we are needed at the time of install Magento just use related command which you get error at the time of installin Magento
sudo apt-get install php7.0-curl
sudo apt-get install php7.0-dom
sudo apt-get install php7.0-mcrypt
sudo apt-get install php7.0-simplexml
sudo apt-get install php7.0-spl
sudo apt-get install php7.0-xsl
sudo apt-get install php7.0-intl
sudo apt-get install php7.0-mbstring
sudo apt-get install php7.0-ctype
sudo apt-get install php7.0-hash
sudo apt-get install php7.0-openssl
sudo apt-get install php7.0-zip
sudo apt-get install php7.0-xmlwriter
sudo apt-get install php7.0-gd
sudo apt-get install php7.0-iconv
Thanks! Hope this will help you
Let me propose an improved method when the values of the dictionnary are lists with the same lenght :
import numpy
def dctToNdarray (dd, szFormat = 'f8'):
'''
Convert a 'rectangular' dictionnary to numpy NdArray
entry
dd : dictionnary (same len of list
retrun
data : numpy NdArray
'''
names = dd.keys()
firstKey = dd.keys()[0]
formats = [szFormat]*len(names)
dtype = dict(names = names, formats=formats)
values = [tuple(dd[k][0] for k in dd.keys())]
data = numpy.array(values, dtype=dtype)
for i in range(1,len(dd[firstKey])) :
values = [tuple(dd[k][i] for k in dd.keys())]
data_tmp = numpy.array(values, dtype=dtype)
data = numpy.concatenate((data,data_tmp))
return data
dd = {'a':[1,2.05,25.48],'b':[2,1.07,9],'c':[3,3.01,6.14]}
data = dctToNdarray(dd)
print data.dtype.names
print data
Apple simply recommends declaring an isX
getter for stylistic purposes. It doesn't matter whether you customize the getter name or not, as long as you use the dot notation or message notation with the correct name. If you're going to use the dot notation it makes no difference, you still access it by the property name:
@property (nonatomic, assign) BOOL working;
[self setWorking:YES]; // Or self.working = YES;
BOOL working = [self working]; // Or = self.working;
Or
@property (nonatomic, assign, getter=isWorking) BOOL working;
[self setWorking:YES]; // Or self.working = YES;, same as above
BOOL working = [self isWorking]; // Or = self.working;, also same as above
Here are 4 ways to insert data into a table.
Simple insertion when the table column sequence is known.
INSERT INTO Table1 VALUES (1,2,...)
Simple insertion into specified columns of the table.
INSERT INTO Table1(col2,col4) VALUES (1,2)
Bulk insertion when...
INSERT INTO Table1 {Column sequence} SELECT * FROM Table2
Bulk insertion of selected data into specified columns of Table2.
.
INSERT INTO Table1 (Column1,Column2 ....)
SELECT Column1,Column2...
FROM Table2
Depending on the level of IE support needed, you could also use the :before selector with the bullet style set as the content property.
li {
list-style-type: none;
font-size: small;
}
li:before {
content: '\2022';
font-size: x-large;
}
You may have to look up the HTML ASCII for the bullet style you want and use a converter for CSS Hex value.
Change SMTP=localhost to SMTP=smtp.gmail.com
The simplest concept to understand, although maybe not the best, is you have three files changed and you want to stash one file.
If you do git stash
to stash them all, git stash apply
to bring them back again and then git checkout f.c
on the file in question to effectively reset it.
When you want to unstash that file run do a git reset --hard
and then run git stash apply
again, taking advantage ofthe fact that git stash apply
doesn't clear the diff from the stash stack.
A more reliable REST endpoint would be http://freegeoip.net/json/
Returns the ip address along with the geo-location too. Also has cross-domain requests enabled (Access-Control-Allow-Origin: *) so you don't have to code around JSONP.
This is probably the shortest and easiest to reason about:
$states = array('az' => 'Arizona', 'al' => 'Alabama');
array_map(function ($short, $long) {
return array(
'short' => $short,
'long' => $long
);
}, array_keys($states), $states);
// produces:
array(
array('short' => 'az', 'long' => 'Arizona'),
array('short' => 'al', 'long' => 'Alabama')
)
Function MySheet()
' uncomment the below line to make it Volatile
'Application.Volatile
MySheet = Application.Caller.Worksheet.Name
End Function
This should be the function you are looking for
I think that equality is something that can be absolutely determined. The trouble with null
is that it's inherently unknown. Null
combined with any other value is null
- unknown. Asking SQL "Is my value equal to null
?" would be unknown every single time, even if the input is null
. I think the implementation of IS NULL
makes it clear.
According to this example it can be done: w3-struct-tables.
Obj C:
#import <UIKit/UIKit.h>
@interface ViewController : UIViewController
@property (nonatomic) UITextView *textView;
@end
#import "ViewController.h"
@interface ViewController ()
@end
@implementation ViewController
@synthesize textView;
- (void)viewDidLoad{
[super viewDidLoad];
[self.view setBackgroundColor:[UIColor grayColor]];
self.textView = [[UITextView alloc] initWithFrame:CGRectMake(30,10,250,20)];
self.textView.delegate = self;
[self.view addSubview:self.textView];
}
- (void)didReceiveMemoryWarning{
[super didReceiveMemoryWarning];
}
- (void)textViewDidChange:(UITextView *)txtView{
float height = txtView.contentSize.height;
[UITextView beginAnimations:nil context:nil];
[UITextView setAnimationDuration:0.5];
CGRect frame = txtView.frame;
frame.size.height = height + 10.0; //Give it some padding
txtView.frame = frame;
[UITextView commitAnimations];
}
@end
I have just been faced with the same challenge, but I thought "Why programming this in Python if you can solve it with a simple "grep"?, which led to the following Python code:
import subprocess
from subprocess import PIPE
try:
output1, errors1 = subprocess.Popen(["c:\\cygwin\\bin\\grep", "-Fvf" ,"c:\\file1.txt", "c:\\file2.txt"], shell=True, stdout=PIPE, stderr=PIPE).communicate();
output2, errors2 = subprocess.Popen(["c:\\cygwin\\bin\\grep", "-Fvf" ,"c:\\file2.txt", "c:\\file1.txt"], shell=True, stdout=PIPE, stderr=PIPE).communicate();
if (len(output1) + len(output2) + len(errors1) + len(errors2) > 0):
print ("Compare result : There are differences:");
if (len(output1) + len(output2) > 0):
print (" Output differences : ");
print (output1);
print (output2);
if (len(errors1) + len(errors2) > 0):
print (" Errors : ");
print (errors1);
print (errors2);
else:
print ("Compare result : Both files are equal");
except Exception as ex:
print("Compare result : Exception during comparison");
print(ex);
raise;
The trick behind this is the following:
grep -Fvf file1.txt file2.txt
verifies if all entries in file2.txt are present in file1.txt. By doing this in both directions we can see if the content of both files are "equal". I put "equal" between quotes because duplicate lines are disregarded in this way of working.
Obviously, this is just an example: you can replace grep
by any commandline file comparison tool.
If you are using Git Extensions you should be able to find your local changes in the Working directory
as shown below:
If you don't see any changes, it's probably because you are on a wrong sub-module. So check all the items with a submarine icon as shown below:
When you found some uncommitted change:
Select the line with Working directory
, navigate to Diff tab, Right click on rows with a pencil (or +
or -
) icon, choose Reset to first commit or commit or stash or whatever you want to do with it.
xhr.file = file;
; the file object is not supposed to be attached this way.xhr.send(file)
doesn't send the file. You have to use the FormData
object to wrap the file into a multipart/form-data
post data object:
var formData = new FormData();
formData.append("thefile", file);
xhr.send(formData);
After that, the file can be access in $_FILES['thefile']
(if you are using PHP).
Remember, MDC and Mozilla Hack demos are your best friends.
EDIT: The (2) above was incorrect. It does send the file, but it would send it as raw post data. That means you would have to parse it yourself on the server (and it's often not possible, depend on server configuration). Read how to get raw post data in PHP here.
Client side code: I had a requirement where my nodejs webserver should work as both server as well as client, so i added below code when i need it as client, It should work fine, i am using it and working fine for me!!!
const socket = require('socket.io-client')('http://192.168.0.8:5000', {
reconnection: true,
reconnectionDelay: 10000
});
socket.on('connect', (data) => {
console.log('Connected to Socket');
});
socket.on('event_name', (data) => {
console.log("-----------------received event data from the socket io server");
});
//either 'io server disconnect' or 'io client disconnect'
socket.on('disconnect', (reason) => {
console.log("client disconnected");
if (reason === 'io server disconnect') {
// the disconnection was initiated by the server, you need to reconnect manually
console.log("server disconnected the client, trying to reconnect");
socket.connect();
}else{
console.log("trying to reconnect again with server");
}
// else the socket will automatically try to reconnect
});
socket.on('error', (error) => {
console.log(error);
});
Necromancing.
IMHO, the existing answers leave much to be desired.
It's very simple:
Require is simply a (non-standard) function defined at global scope.
(window in browser, global in NodeJS).
Now, as such, to answer the question "what is require", we "simply" need to know what this function does.
This is perhaps best explained with code.
Here's a simple implementation by Michele Nasti, the code you can find on his github page.
Basically, let's call our minimalisc require function myRequire:
function myRequire(name)
{
console.log(`Evaluating file ${name}`);
if (!(name in myRequire.cache)) {
console.log(`${name} is not in cache; reading from disk`);
let code = fs.readFileSync(name, 'utf8');
let module = { exports: {} };
myRequire.cache[name] = module;
let wrapper = Function("require, exports, module", code);
wrapper(myRequire, module.exports, module);
}
console.log(`${name} is in cache. Returning it...`);
return myRequire.cache[name].exports;
}
myRequire.cache = Object.create(null);
window.require = myRequire;
const stuff = window.require('./main.js');
console.log(stuff);
Now you notice, the object "fs" is used here.
For simplicity's sake, Michele just imported the NodeJS fs module:
const fs = require('fs');
Which wouldn't be necessary.
So in the browser, you could make a simple implementation of require with a SYNCHRONOUS XmlHttpRequest:
const fs = {
file: `
// module.exports = \"Hello World\";
module.exports = function(){ return 5*3;};
`
, getFile(fileName: string, encoding: string): string
{
// https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/Synchronous_and_Asynchronous_Requests
let client = new XMLHttpRequest();
// client.setRequestHeader("Content-Type", "text/plain;charset=UTF-8");
// open(method, url, async)
client.open("GET", fileName, false);
client.send();
if (client.status === 200)
return client.responseText;
return null;
}
, readFileSync: function (fileName: string, encoding: string): string
{
// this.getFile(fileName, encoding);
return this.file; // Example, getFile would fetch this file
}
};
Basically, what require thus does, is download a JavaScript-file, eval it in an anonymous namespace (aka Function), with the global parameters "require", "exports" and "module", and return the exports, meaning an object's public functions and properties.
Note that this evaluation is recursive: you require files, which themselfs can require files.
This way, all "global" variables used in your module are variables in the require-wrapper-function namespace, and don't pollute the global scope with unwanted variables.
Also, this way, you can reuse code without depending on namespaces, so you get "modularity" in JavaScript. "modularity" in quotes, because this is not exactly true, though, because you can still write window.bla, and hence still pollute the global scope... Also, this establishes a separation between private and public functions, the public functions being the exports.
Now instead of saying
module.exports = function(){ return 5*3;};
You can also say:
function privateSomething()
{
return 42:
}
function privateSomething2()
{
return 21:
}
module.exports = {
getRandomNumber: privateSomething
,getHalfRandomNumber: privateSomething2
};
and return an object.
Also, because your modules get evaluated in a function with parameters
"require", "exports" and "module", your modules can use the undeclared variables "require", "exports" and "module", which might be startling at first. The require parameter there is of course a ByVal pointer to the require function saved into a variable.
Cool, right ?
Seen this way, require looses its magic, and becomes simple.
Now, the real require-function will do a few more checks and quirks, of course, but this is the essence of what that boils down to.
Also, in 2020, you should use the ECMA implementations instead of require:
import defaultExport from "module-name";
import * as name from "module-name";
import { export1 } from "module-name";
import { export1 as alias1 } from "module-name";
import { export1 , export2 } from "module-name";
import { foo , bar } from "module-name/path/to/specific/un-exported/file";
import { export1 , export2 as alias2 , [...] } from "module-name";
import defaultExport, { export1 [ , [...] ] } from "module-name";
import defaultExport, * as name from "module-name";
import "module-name";
And if you need a dynamic non-static import (e.g. load a polyfill based on browser-type), there is the ECMA-import function/keyword:
var promise = import("module-name");
note that import is not synchronous like require.
Instead, import is a promise, so
var something = require("something");
becomes
var something = await import("something");
because import returns a promise (asynchronous).
So basically, unlike require, import replaces fs.readFileSync with fs.readFileAsync.
async readFileAsync(fileName, encoding)
{
const textDecoder = new TextDecoder(encoding);
// textDecoder.ignoreBOM = true;
const response = await fetch(fileName);
console.log(response.ok);
console.log(response.status);
console.log(response.statusText);
// let json = await response.json();
// let txt = await response.text();
// let blo:Blob = response.blob();
// let ab:ArrayBuffer = await response.arrayBuffer();
// let fd = await response.formData()
// Read file almost by line
// https://developer.mozilla.org/en-US/docs/Web/API/ReadableStreamDefaultReader/read#Example_2_-_handling_text_line_by_line
let buffer = await response.arrayBuffer();
let file = textDecoder.decode(buffer);
return file;
} // End Function readFileAsync
This of course requires the import-function to be async as well.
"use strict";
async function myRequireAsync(name) {
console.log(`Evaluating file ${name}`);
if (!(name in myRequireAsync.cache)) {
console.log(`${name} is not in cache; reading from disk`);
let code = await fs.readFileAsync(name, 'utf8');
let module = { exports: {} };
myRequireAsync.cache[name] = module;
let wrapper = Function("asyncRequire, exports, module", code);
await wrapper(myRequireAsync, module.exports, module);
}
console.log(`${name} is in cache. Returning it...`);
return myRequireAsync.cache[name].exports;
}
myRequireAsync.cache = Object.create(null);
window.asyncRequire = myRequireAsync;
async () => {
const asyncStuff = await window.asyncRequire('./main.js');
console.log(asyncStuff);
};
Even better, right ?
Well yea, except that there is no ECMA-way to dynamically import synchronously (without promise).
Now, to understand the repercussions, you absolutely might want to read up on promises/async-await here, if you don't know what that is.
But very simply put, if a function returns a promise, it can be "awaited":
function sleep (fn, par)
{
return new Promise((resolve) => {
// wait 3s before calling fn(par)
setTimeout(() => resolve(fn(par)), 3000)
})
}
var fileList = await sleep(listFiles, nextPageToken)
Which is nice way to make asynchronous code look synchronous.
Note that if you want to use async await in a function, that function must be declared async.
async function doSomethingAsync()
{
var fileList = await sleep(listFiles, nextPageToken)
}
And also please note that in JavaScript, there is no way to call an async function (blockingly) from a synchronous one (the ones you know). So if you want to use await (aka ECMA-import), all your code needs to be async, which most likely is a problem, if everything isn't already async...
An example of where this simplified implementation of require fails, is when you require a file that is not valid JavaScript, e.g. when you require css, html, txt, svg and images or other binary files.
And it's easy to see why:
If you e.g. put HTML into a JavaScript function body, you of course rightfully get
SyntaxError: Unexpected token '<'
because of Function("bla", "<doctype...")
Now, if you wanted to extend this to for example include non-modules, you could just check the downloaded file-contents with for code.indexOf("module.exports") == -1
, and then e.g. eval("jquery content") instead of Func (which works fine as long as you're in the browser). Since downloads with Fetch/XmlHttpRequests are subject to the same-origin-policy, and integrity is ensured by SSL/TLS, the use of eval here is rather harmless, provided you checked the JS files before you added them to your site, but that much should be standard-operating-procedure.
Note that there are several implementations of require-like functionality:
With Java 8's lambdas, a convenient way is to use
org.mockito.invocation.InvocationOnMock
when(client.deleteByQuery(anyString(), anyString())).then(invocationOnMock -> {
assertEquals("myCollection", invocationOnMock.getArgument(0));
assertThat(invocationOnMock.getArgument(1), Matchers.startsWith("id:"));
}
I wrote a similar answer to a similar question on Stack Overflow, but here is part of that answer.
The new version of Android Studio (2.1) has support for Java 8 features. Here is an extract from the Android Developers blogspot post:
... Android Studio 2.1 release includes support for the new Jack compiler and support for Java 8.
...
To use Java 8 language features when developing with the N Developer Preview, you need to use the Jack compiler. The New Project Wizard [File? New? Project] generates the correct configurations for projects targeting the N.
Android does not support Java 1.8 yet (it only supports up to 1.7), so you cannot use Java 8 features like lambdas.
This answer gives more detail on Android Studio's compatibility; it states:
If you want to use lambdas, one of the major features of Java 8 in Android, you can use gradle-retrolamba
If you want to know more about using gradle-retrolambda
, this answer gives a lot of detail on doing that.
If you use request.getPathInfo() inside a Filter, you always seem to get null (at least with jetty).
This terse invalid bug + response alludes to the issue I think:
https://issues.apache.org/bugzilla/show_bug.cgi?id=28323
I suspect it is related to the fact that filters run before the servlet gets the request. It may be a container bug, or expected behaviour that I haven't been able to identify.
The contextPath is available though, so fforws solution works even in filters. I don't like having to do it by hand, but the implementation is broken or
You can check with null or Number.
First, add a reference to Microsoft.VisualBasic
in your application.
Then, use the following code:
bool b = Microsoft.VisualBasic.Information.IsNumeric("null");
bool c = Microsoft.VisualBasic.Information.IsNumeric("abc");
In the above, b
and c
should both be false
.
There is no real need to create a war to run it from Tomcat. You can follow these steps
Create a folder in webapps folder e.g. MyApp
Put your html and css in that folder and name the html file, which you want to be the starting page for your application, index.html
Start tomcat and point your browser to url "http://localhost:8080/MyApp". Your index.html page will pop up in the browser
First you need to get the counts for each category, i.e. how many Bads and Goods and so on are there for each group (Food, Music, People). This would be done like so:
raw <- read.csv("http://pastebin.com/raw.php?i=L8cEKcxS",sep=",")
raw[,2]<-factor(raw[,2],levels=c("Very Bad","Bad","Good","Very Good"),ordered=FALSE)
raw[,3]<-factor(raw[,3],levels=c("Very Bad","Bad","Good","Very Good"),ordered=FALSE)
raw[,4]<-factor(raw[,4],levels=c("Very Bad","Bad","Good","Very Good"),ordered=FALSE)
raw=raw[,c(2,3,4)] # getting rid of the "people" variable as I see no use for it
freq=table(col(raw), as.matrix(raw)) # get the counts of each factor level
Then you need to create a data frame out of it, melt it and plot it:
Names=c("Food","Music","People") # create list of names
data=data.frame(cbind(freq),Names) # combine them into a data frame
data=data[,c(5,3,1,2,4)] # sort columns
# melt the data frame for plotting
data.m <- melt(data, id.vars='Names')
# plot everything
ggplot(data.m, aes(Names, value)) +
geom_bar(aes(fill = variable), position = "dodge", stat="identity")
Is this what you're after?
To clarify a little bit, in ggplot multiple grouping bar you had a data frame that looked like this:
> head(df)
ID Type Annee X1PCE X2PCE X3PCE X4PCE X5PCE X6PCE
1 1 A 1980 450 338 154 36 13 9
2 2 A 2000 288 407 212 54 16 23
3 3 A 2020 196 434 246 68 19 36
4 4 B 1980 111 326 441 90 21 11
5 5 B 2000 63 298 443 133 42 21
6 6 B 2020 36 257 462 162 55 30
Since you have numerical values in columns 4-9, which would later be plotted on the y axis, this can be easily transformed with reshape
and plotted.
For our current data set, we needed something similar, so we used freq=table(col(raw), as.matrix(raw))
to get this:
> data
Names Very.Bad Bad Good Very.Good
1 Food 7 6 5 2
2 Music 5 5 7 3
3 People 6 3 7 4
Just imagine you have Very.Bad
, Bad
, Good
and so on instead of X1PCE
, X2PCE
, X3PCE
. See the similarity? But we needed to create such structure first. Hence the freq=table(col(raw), as.matrix(raw))
.
Another valid option is to spread the joins across multiple LINQ clauses, as follows:
public static IEnumerable<Announcementboard> GetSiteContent(string pageName, DateTime date)
{
IEnumerable<Announcementboard> content = null;
IEnumerable<Announcementboard> addMoreContent = null;
try
{
content = from c in DB.Announcementboards
// Can be displayed beginning on this date
where c.Displayondate > date.AddDays(-1)
// Doesn't Expire or Expires at future date
&& (c.Displaythrudate == null || c.Displaythrudate > date)
// Content is NOT draft, and IS published
&& c.Isdraft == "N" && c.Publishedon != null
orderby c.Sortorder ascending, c.Heading ascending
select c;
// Get the content specific to page names
if (!string.IsNullOrEmpty(pageName))
{
addMoreContent = from c in content
join p in DB.Announceonpages on c.Announcementid equals p.Announcementid
join s in DB.Apppagenames on p.Apppagenameid equals s.Apppagenameid
where s.Apppageref.ToLower() == pageName.ToLower()
select c;
}
// Add the specified content using UNION
content = content.Union(addMoreContent);
// Exclude the duplicates using DISTINCT
content = content.Distinct();
return content;
}
catch (MyLovelyException ex)
{
// Add your exception handling here
throw ex;
}
}
You don't need fancy things, just see the string methods in the standard library and you can easily split your url between 'filename' part and the rest:
url.rsplit('/', 1)
So you can get the part you're interested in simply with:
url.rsplit('/', 1)[-1]
I had a similar issue WhiteLabel Error message on my Angular SPA whenever I did a refresh.
The fix was to create a controller that implements ErrorController but instead of returning a String, I had to return a ModelAndView object that forwards to /
@CrossOrigin
@RestController
public class IndexController implements ErrorController {
private static final String PATH = "/error";
@RequestMapping(value = PATH)
public ModelAndView saveLeadQuery() {
return new ModelAndView("forward:/");
}
@Override
public String getErrorPath() {
return PATH;
}
}
To force a reload of the php.ini you should restart apache.
Try sudo service apache2 restart
from the command line.
Or sudo /etc/init.d/apache2 restart
By Using like
use css and font same location
@font-face {
font-family: 'Material-Design-Icons';
src: url('Material-Design-Icons.eot');
src: url('Material-Design-Icons.eot?#iefix') format('embedded-opentype'),
url('Material-Design-Icons.woff2') format('woff2'),
url('Material-Design-Icons.woff') format('woff'),
url('Material-Design-Icons.ttf') format('truetype'),
url('Material-Design-Icons.svg#ge_dinar_oneregular') format('svg');
font-weight: normal;
font-style: normal;
}
Add below dependency in pom.xml:
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>2.10.1</version>
</dependency>
Was facing the same issue as the return type cannot be bind with the MediaType of Class Foo. After adding the dependency it worked.
You can try to upload it to google docs, and download it as HTML.
Simple binary threshold method is sufficient.
#include <string>
#include "opencv/highgui.h"
#include "opencv2/imgproc/imgproc.hpp"
using namespace std;
using namespace cv;
int main()
{
Mat img = imread("./img.jpg",0);//loading gray scale image
threshold(img, img, 128, 255, CV_THRESH_BINARY);//threshold binary, you can change threshold 128 to your convenient threshold
imwrite("./black-white.jpg",img);
return 0;
}
You can use GaussianBlur
to get a smooth black and white image.
If you have installed postgres via the Windows installer you can start it in Services like so:
Here is the SVG of the icon.
<svg width="28" height="41" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<defs>
<linearGradient id="b">
<stop stop-color="#2e6c97" offset="0"/>
<stop stop-color="#3883b7" offset="1"/>
</linearGradient>
<linearGradient id="a">
<stop stop-color="#126fc6" offset="0"/>
<stop stop-color="#4c9cd1" offset="1"/>
</linearGradient>
<linearGradient y2="-0.004651" x2="0.498125" y1="0.971494" x1="0.498125" id="c" xlink:href="#a"/>
<linearGradient y2="-0.004651" x2="0.415917" y1="0.490437" x1="0.415917" id="d" xlink:href="#b"/>
</defs>
<g>
<title>Layer 1</title>
<rect id="svg_1" fill="#fff" width="12.625" height="14.5" x="411.279" y="508.575"/>
<path stroke="url(#d)" id="svg_2" stroke-linecap="round" stroke-width="1.1" fill="url(#c)" d="m14.095833,1.55c-6.846875,0 -12.545833,5.691 -12.545833,11.866c0,2.778 1.629167,6.308 2.80625,8.746l9.69375,17.872l9.647916,-17.872c1.177083,-2.438 2.852083,-5.791 2.852083,-8.746c0,-6.175 -5.607291,-11.866 -12.454166,-11.866zm0,7.155c2.691667,0.017 4.873958,2.122 4.873958,4.71s-2.182292,4.663 -4.873958,4.679c-2.691667,-0.017 -4.873958,-2.09 -4.873958,-4.679c0,-2.588 2.182292,-4.693 4.873958,-4.71z"/>
<path id="svg_3" fill="none" stroke-opacity="0.122" stroke-linecap="round" stroke-width="1.1" stroke="#fff" d="m347.488007,453.719c-5.944,0 -10.938,5.219 -10.938,10.75c0,2.359 1.443,5.832 2.563,8.25l0.031,0.031l8.313,15.969l8.25,-15.969l0.031,-0.031c1.135,-2.448 2.625,-5.706 2.625,-8.25c0,-5.538 -4.931,-10.75 -10.875,-10.75zm0,4.969c3.168,0.021 5.781,2.601 5.781,5.781c0,3.18 -2.613,5.761 -5.781,5.781c-3.168,-0.02 -5.75,-2.61 -5.75,-5.781c0,-3.172 2.582,-5.761 5.75,-5.781z"/>
</g>
</svg>
In my own case, i had to set backdrop
and set the top
and left
properties before i could apply draggable
function on the modal dialog. Maybe it might help someone ;)
if (!($('.modal.in').length)) {
$('.modal-dialog').css({
top: 0,
left: 0
});
}
$('#myModal').modal({
backdrop: false,
show: true
});
$('.modal-dialog').draggable({
handle: ".modal-header"
});
string[]
is an array (vector) of strings
string
is just a string (a list/array of characters)
Depending on how you want to convert this, the canonical answer could be:
return String.Join(" ", myStringArray);
return new []{ myString };
It does not work because your script in JSFiddle is running inside it's own scope (see the "OnLoad" drop down on the left?).
One way around this is to bind your event handler in javascript (where it should be):
document.getElementById('optionID').onchange = function () {
document.getElementById("message").innerHTML = "Having a Baby!!";
};
Another way is to modify your code for the fiddle environment and explicitly declare your function as global so it can be found by your inline event handler:
window.changeMessage() {
document.getElementById("message").innerHTML = "Having a Baby!!";
};
?
just put #login-box
before <h2>Welcome</h2>
will be ok.
<div class='container'>
<div class='hero-unit'>
<div id='login-box' class='pull-right control-group'>
<div class='clearfix'>
<input type='text' placeholder='Username' />
</div>
<div class='clearfix'>
<input type='password' placeholder='Password' />
</div>
<button type='button' class='btn btn-primary'>Log in</button>
</div>
<h2>Welcome</h2>
<p>Please log in</p>
</div>
</div>
here is jsfiddle http://jsfiddle.net/SyjjW/4/
ok i spent some frustrating time with this problem too. My little guide.
Open desktop for example. If you didnt switch your disc in cmd, type:
cd desktop
Now if you want to display subfolders:
cd, make 1 spacebar, and press tab 2 times
Now if you want to enter directory/file with SPACE IN NAME. Lets open some file name f.g., to open it we need to type:
cd file\ name
p.s. notice this space after slash :)
@Pascal's comment on the OP's question is right. By simply adding the image, it removes the black borders and the app will use the full height.
You will need to make adjustments to any CGRects by determining that the device is using the bigger display. I.e. If you need something aligned to the bottom of the screen.
I am sure there is a built in method, but I haven't seen anything and a lot is still under NDA so the method we use in our apps is quite simply a global function. Add the following to your .pch file and then its a simple if( is4InchRetina() ) { ... }
call to make adjustments to your CGRects etc.
static BOOL is4InchRetina()
{
if (![UIApplication sharedApplication].statusBarHidden && (int)[[UIScreen mainScreen] applicationFrame].size.height == 548 || [UIApplication sharedApplication].statusBarHidden && (int)[[UIScreen mainScreen] applicationFrame].size.height == 568)
return YES;
return NO;
}
You cannot rely on CSS for form elements. The results vary wildly across all the browsers. I don't think Safari lets you customize any form elements at all.
Your best bet is to use a plugin like jqTransform (uses jQuery).
EDIT: that page doesn't seem to be working at the moment. There is also Custom Form Elements which supports MooTools and may support jQuery in the future.
The call
e.extractAll("th")
for a regular method extractAll()
is indeed equivalent to
Extractor.extractAll(e, "th")
These two calls are treated the same in all regards, including the error messages you get.
If you don't need to pass the instance to a method, you can use a staticmethod
:
@staticmethod
def extractAll(tag):
...
which can be called as e.extractAll("th")
. But I wonder why this is a method on a class at all if you don't need to access any instance.
Just omit the [Required] attribute from the string somefield
property. This will make it create a NULL
able column in the db.
To make int types allow NULLs in the database, they must be declared as nullable ints in the model:
// an int can never be null, so it will be created as NOT NULL in db
public int someintfield { get; set; }
// to have a nullable int, you need to declare it as an int?
// or as a System.Nullable<int>
public int? somenullableintfield { get; set; }
public System.Nullable<int> someothernullableintfield { get; set; }
If you are looking for only attributes, then you can get them by:
@post.attributes
Note that this calls ActiveModel::AttributeSet.to_hash
every time you invoke it, so if you need to access the hash multiple times you should cache it in a local variable:
attribs = @post.attributes
Java does not have such feature. Instead you can either create regular subclass of your list implementation or create anonymous inner class:
List<String> list = new ArrayList<String>() {
public String getData() {
return ""; // add your implementation here.
}
};
The problem is to call this method. You can do it "in place":
new ArrayList<String>() {
public String getData() {
return ""; // add your implementation here.
}
}.getData();
Also you can use The Symfony Serializer Component
use Symfony\Component\Serializer\Encoder\JsonEncoder;
use Symfony\Component\Serializer\Normalizer\ObjectNormalizer;
use Symfony\Component\Serializer\Serializer;
$serializer = new Serializer([new ObjectNormalizer()], [new JsonEncoder()]);
$array = json_decode($serializer->serialize($object, 'json'), true);
The fact that Clang compiles code faster may not be as important as the speed of the resulting binary. However, here is a series of benchmarks.
Save the following program as print.py
:
#!/usr/bin/python3
print('Hello World')
Then in the terminal type:
chmod +x print.py
./print.py
Try surrounding the path in quotes. i.e "C:\Program Files\Appname\config.file"
There is something wrong in your setDelimiter()
function. You don't want to double quote the delimiters, do you?
public void setDelimiter(String delimiter) {
char[] c = delimiter.toCharArray();
this.delimiter = "\\" + c[0] + "\\" + c[1];
System.out.println("Delimiter string is: " + this.delimiter);
}
However, as other users have said, it's better to use the Pattern.quote() method to escape your delimiter if your requirements permit.
Issue #2 now can be solved using BroadcastAPI.
At the moment it's only available in Chrome, Firefox, and Opera.
var bc = new BroadcastChannel('test_channel');
bc.onmessage = function (ev) {
if(ev.data && ev.data.url===window.location.href){
alert('You cannot open the same page in 2 tabs');
}
}
bc.postMessage(window.location.href);
In this case, no need for a directive. This does the job :
<button ng-click="count = count + 1" ng-init="count=0">
Increment
</button>
<span>
count: {{count}}
</span>
System.Single / float - 7 digits
System.Double / double - 15-16 digits
System.Decimal / decimal - 28-29 significant digits
The way I've been stung by using the wrong type (a good few years ago) is with large amounts:
You run out at 1 million for a float.
A 15 digit monetary value:
9 trillion with a double. But with division and comparisons it's more complicated (I'm definitely no expert in floating point and irrational numbers - see Marc's point). Mixing decimals and doubles causes issues:
A mathematical or comparison operation that uses a floating-point number might not yield the same result if a decimal number is used because the floating-point number might not exactly approximate the decimal number.
When should I use double instead of decimal? has some similar and more in depth answers.
Using double
instead of decimal
for monetary applications is a micro-optimization - that's the simplest way I look at it.