public static class SqlParameterExtensions
{
public static T GetValueOrDefault<T>(this SqlParameter sqlParameter)
{
if (sqlParameter.Value == DBNull.Value
|| sqlParameter.Value == null)
{
if (typeof(T).IsValueType)
return (T)Activator.CreateInstance(typeof(T));
return (default(T));
}
return (T)sqlParameter.Value;
}
}
// Usage
using (SqlConnection conn = new SqlConnection(connectionString))
using (SqlCommand cmd = new SqlCommand("storedProcedure", conn))
{
SqlParameter outputIdParam = new SqlParameter("@ID", SqlDbType.Int)
{
Direction = ParameterDirection.Output
};
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add(outputIdParam);
conn.Open();
cmd.ExecuteNonQuery();
int result = outputIdParam.GetValueOrDefault<int>();
}
This can reasonably be achieved in a single line statement in API 12 and above. Below is an example where v
is the view you wish to animate;
v.animate().translationXBy(-1000).start();
This will slide the View
in question off to the left by 1000px. To slide the view back onto the UI we can simply do the following.
v.animate().translationXBy(1000).start();
I hope someone finds this useful.
Simply follow the code
public static String getFormatedDate(String strDate,StringsourceFormate,
String destinyFormate) {
SimpleDateFormat df;
df = new SimpleDateFormat(sourceFormate);
Date date = null;
try {
date = df.parse(strDate);
} catch (ParseException e) {
e.printStackTrace();
}
df = new SimpleDateFormat(destinyFormate);
return df.format(date);
}
and pass the value into the function like that,
getFormatedDate("21:30:00", "HH:mm", "hh:mm aa");
or checkout this documentation SimpleDateFormat for StringsourceFormate and destinyFormate.
use these settings with oauth2 in Postman:
Access Token URL = https://accounts.google.com/o/oauth2/token
SCOPE = https: //www.googleapis.com/auth/admin.directory.userschema
{
"fields": [
{
"fieldName": "role",
"fieldType": "STRING",
"multiValued": true,
"readAccessType": "ADMINS_AND_SELF"
}
],
"schemaName": "SAML"
}
SCOPE = https://www.googleapis.com/auth/admin.directory.user
PATCH https://www.googleapis.com/admin/directory/v1/users/[email protected]
{
"customSchemas": {
"SAML": {
"role": [
{
"value": "arn:aws:iam::123456789123:role/Admin,arn:aws:iam::123456789123:saml-provider/GoogleApps",
"customType": "Admin"
}
]
}
}
}
Check out this one-liner plugin that scales a background image responsively.
All you need to do is:
1. Include the library:
<script type="text/javascript" src="http://cdnjs.cloudflare.com/ajax/libs/jquery-backstretch/2.0.4/jquery.backstretch.min.js"></script>
2. Call the method:
$.backstretch("http://dl.dropbox.com/u/515046/www/garfield-interior.jpg");
I used it for a simple "under construction website" site I had and it worked perfectly.
The inflate exception is not actually the problem but really comes from another deeper issue in your layout that is then wrapped in an InflateException
.
A common issue is an out of memory exception when trying to inflate an ImageView
loading a drawable resource. If one of these resources has a high pixel resolution it would take a lot of memory causing then an inflate exception.
So basically verify that the pixel resolution in all your image drawables is just the minimum necessary for your layout.
<a onclick="navigator.app.loadUrl('https://google.com/', { openExternal:true });">Link</a>
Works for me with android & PG 3.0
In order to simulate the issue that you are facing, I created the following sample using SSIS 2008 R2
with SQL Server 2008 R2
backend. The example is based on what I gathered from your question. This example doesn't provide a solution but it might help you to identify where the problem could be in your case.
Created a simple CSV file with two columns namely order number and order date. As you had mentioned in your question, values of both the columns are qualified with double quotes (") and also the lines end with Line Feed (\n) with the date being the last column. The below screenshot was taken using Notepad++, which can display the special characters in a file. LF in the screenshot denotes Line Feed.
Created a simple table named dbo.Destination
in the SQL Server database to populate the CSV file data using SSIS package. Create script for the table is given below.
CREATE TABLE [dbo].[Destination](
[OrderNumber] [varchar](50) NULL,
[OrderDate] [date] NULL
) ON [PRIMARY]
GO
On the SSIS package, I created two connection managers. SQLServer was created using the OLE DB Connection to connect to the SQL Server database. FlatFile is a flat file connection manager.
Flat file connection manager was configured to read the CSV file and the settings are shown below. The red arrows indicate the changes made.
Provided a name to the flat file connection manager. Browsed to the location of the CSV file and selected the file path. Entered the double quote ("
) as the text qualifier. Changed the Header row delimiter from {CR}{LF} to {LF}
. This header row delimiter change also reflects on the Columns section.
No changes were made in the Columns section.
Changed the column name from Column0 to OrderNumber
.
Changed the column name from Column1 to OrderDate
and also changed the data type to date [DT_DATE]
Preview of the data within the flat file connection manager looks good.
On the Control Flow
tab of the SSIS package, placed a Data Flow Task
.
Within the Data Flow Task, placed a Flat File Source
and an OLE DB Destination
.
The Flat File Source
was configured to read the CSV file data using the FlatFile connection manager. Below three screenshots show how the flat file source component was configured.
The OLE DB Destination
component was configured to accept the data from Flat File Source and insert it into SQL Server database table named dbo.Destination
. Below three screenshots show how the OLE DB Destination component was configured.
Using the steps mentioned in the below 5 screenshots, I added a data viewer on the flow between the Flat File Source and OLE DB Destination.
Before running the package, I verified the initial data present in the table. It is currently empty because I created this using the script provided at the beginning of this post.
Executed the package and the package execution temporarily paused to display the data flowing from Flat File Source to OLE DB Destination in the data viewer. I clicked on the run button to proceed with the execution.
The package executed successfully.
Flat file source data was inserted successfully into the table dbo.Destination
.
Here is the layout of the table dbo.Destination. As you can see, the field OrderDate is of data type date and the package still continued to insert the data correctly.
This post even though is not a solution. Hopefully helps you to find out where the problem could be in your scenario.
The webpack config file (in webpack 2) allows you to export a promise chain, so long as the last step returns a webpack config object. See promise configuration docs. From there:
webpack now supports returning a Promise from the configuration file. This allows to do async processing in you configuration file.
You could create a simple recursive copy function that copies your file, and only after that triggers webpack. E.g.:
module.exports = function(){
return copyTheFiles( inpath, outpath).then( result => {
return { entry: "..." } // Etc etc
} )
}
Actually, it is very possible for managed code to do 3d games, the problem is the back engines. With .Net, for a brief period, there was a Managed DirectX wrapper to DirectX 9 by Microsoft. This was before the abstraction that is now XNA.
Being given total access to DirectX api's, .Net games work a treat. The best example I know of is www.entombed.co.uk, which is written in VB.Net.
Unfortunately, on the Java side, it is seriously lacking - mainly for the reason that DirectX isn't available for Java, and games programmers know and understand the DirectX api - why learn yet another api when you will be returning to DirectX?
This is now trivial in tidyr with replace_na(). The function appears to work for data.tables as well as data.frames:
tidyr::replace_na(x, list(a=0, b=0))
If you're using jQuery, it's as simple as this:
$('#mySelect').change(function()
{
$('#myForm').submit();
});
Instead of casting the model in the RenderPartial call, and since you're using razor, you can modify the first line in your view from
@model dynamic
to
@model YourNamespace.YourModelType
This has the advantage of working on every @Html.Partial
call you have in the view, and also gives you intellisense for the properties.
UIButton *myButton;
[myButton setTitle:@"My Title" forState:UIControlStateNormal];
[myButton setTitle:@"My Selected Title" forState:UIControlStateSelected];
I can't see hotkey for macbook for use vim in standard terminal. Hope it will help someone. For macOS users (tested on macbook pro 2018):
fn + ? - move to beginning line
fn + ? - move to end line
fn + ? - move page up
fn + ? - move page down
fn + g - move the cursor to the beginning of the document
fn + shift + g - move the cursor to the end of the document
For the last two commands sometime needs to tap twice.
Remove the *
from your query and use individual column names, like this:
SELECT SOME_OTHER_COLUMN, CONCAT(FIRSTNAME, ',', LASTNAME) AS FIRSTNAME FROM `customer`;
Using *
means, in your results you want all the columns of the table. In your case *
will also include FIRSTNAME
. You are then concatenating some columns and using alias of FIRSTNAME
. This creates 2 columns with same name.
In Python 3.x I do:
from pathlib import Path
path = Path(__file__).parent.absolute()
Explanation:
Path(__file__)
is the path to the current file..parent
gives you the directory the file is in..absolute()
gives you the full absolute path to it.Using pathlib
is the modern way to work with paths. If you need it as a string later for some reason, just do str(path)
.
It’s just HTML with Server Side Includes.
Sadly no, there is no such thing as drop if exists, or CREATE IF NOT EXIST
You could write a plsql script to include the logic there.
http://download.oracle.com/docs/cd/B12037_01/server.101/b10759/statements_9003.htm
I'm not much into Oracle Syntax, but i think @Erich's script would be something like this.
declare
cant integer
begin
select into cant count(*) from dba_tables where table_name='Table_name';
if count>0 then
BEGIN
DROP TABLE tableName;
END IF;
END;
Your regex looks correct, but you're splitting
with it instead of matching
with it. You want something like this:
// Untested code
Matcher matcher = Pattern.compile("<%=(.*?)%>").matcher(str);
while (matcher.find()) {
System.out.println(matcher.group());
}
I couldn't get the other answers to work within the evaluate console in Intellij so...
groovy.json.JsonOutput.toJson(myObject)
This works quite well, but unfortunately
groovy.json.JsonOutput.prettyString(myObject)
didn't work for me.
To get it pretty printed I had to do this...
groovy.json.JsonOutput.prettyPrint(groovy.json.JsonOutput.toJson(myObject))
If you have arrived here via google, please make sure to check that you have given self as the first parameter to a class function. Especially if you try to reference values for that object instance inside the class function.
def foo():
print(self.bar)
>NameError: name 'self' is not defined
def foo(self):
print(self.bar)
I guess setting the position property of the #inner div to relative may also help achieve the effect. But anyways I tried the original code pasted in the Question on IE9 and latest Google Chrome and they already give the desirable effect without any modifications.
The headers and footers for printing from browsers is, sadly, a browser preference, not a document-level element that you can style. Refer to my very similar question for further workarounds and disappointment.
For Jackson 1.9, We can use the following code for pretty print.
ObjectMapper objectMapper = new ObjectMapper();
objectMapper.enable(SerializationConfig.Feature.INDENT_OUTPUT);
Please check if you have already close the database connection or not. In my case i was getting the error because the connection was close in upper line.
Interesting I never spent too much time adjusting the colours in IntelliJ although tried once.
See link below with an already defined colour scheme you can import.
Where can I download IntelliJ IDEA 10 Color Schemes?
http://devnet.jetbrains.net/docs/DOC-1154
Download the jar file, file import the jar where you will see a what to import ;)
double screenWidth = System.Windows.SystemParameters.PrimaryScreenWidth;
double screenhight= System.Windows.SystemParameters.PrimaryScreenHeight;
You should use "Microsoft OLE DB Provider for ODBC Drivers" to get to access to Microsoft Access. Here is the sample tutorial on using it
http://msdn.microsoft.com/en-us/library/aa288452(v=vs.71).aspx
The answer is to not use a regular expression. This is sets and counting.
Regular expressions are about order.
In your life as a programmer you will asked to do many things that do not make sense. Learn to dig a level deeper. Learn when the question is wrong.
The question (if it mentioned regular expressions) is wrong.
Pseudocode (been switching between too many languages, of late):
if s.length < 8:
return False
nUpper = nLower = nAlphanum = nSpecial = 0
for c in s:
if isUpper(c):
nUpper++
if isLower(c):
nLower++
if isAlphanumeric(c):
nAlphanum++
if isSpecial(c):
nSpecial++
return (0 < nUpper) and (0 < nAlphanum) and (0 < nSpecial)
Bet you read and understood the above code almost instantly. Bet you took much longer with the regex, and are less certain it is correct. Extending the regex is risky. Extended the immediate above, much less so.
Note also the question is imprecisely phrased. Is the character set ASCII or Unicode, or ?? My guess from reading the question is that at least one lowercase character is assumed. So I think the assumed last rule should be:
return (0 < nUpper) and (0 < nLower) and (0 < nAlphanum) and (0 < nSpecial)
(Changing hats to security-focused, this is a really annoying/not useful rule.)
Learning to know when the question is wrong is massively more important than clever answers. A clever answer to the wrong question is almost always wrong.
I would start with upgrade of CMAKE version.
You can use INCLUDE_DIRECTORIES for header location and LINK_DIRECTORIES + TARGET_LINK_LIBRARIES for libraries
INCLUDE_DIRECTORIES(your/header/dir)
LINK_DIRECTORIES(your/library/dir)
rosbuild_add_executable(kinectueye src/kinect_ueye.cpp)
TARGET_LINK_LIBRARIES(kinectueye lib1 lib2 lib2 ...)
note that lib1
is expanded to liblib1.so
(on Linux), so use ln to create appropriate links in case you do not have them
First give your form an id
attribute, then use code like this:
$(document).ready( function() {
var form = $('#my_awesome_form');
form.find('select:first').change( function() {
$.ajax( {
type: "POST",
url: form.attr( 'action' ),
data: form.serialize(),
success: function( response ) {
console.log( response );
}
} );
} );
} );
So this code uses .serialize()
to pull out the relevant data from the form. It also assumes the select you care about is the first one in the form.
For future reference, the jQuery docs are very, very good.
It can be detected by storing the previous scrollTop
value and comparing the current scrollTop value with it.
JavaScript :
var lastScrollTop = 0;
// element should be replaced with the actual target element on which you have applied scroll, use window in case of no target element.
element.addEventListener("scroll", function(){ // or window.addEventListener("scroll"....
var st = window.pageYOffset || document.documentElement.scrollTop; // Credits: "https://github.com/qeremy/so/blob/master/so.dom.js#L426"
if (st > lastScrollTop){
// downscroll code
} else {
// upscroll code
}
lastScrollTop = st <= 0 ? 0 : st; // For Mobile or negative scrolling
}, false);
You can directly use String.valueOf()
String.valueOf(charSequence)
Though this is same as toString()
it does a null check on the charSequence
before actually calling toString.
This is useful when a method can return either a charSequence
or null
value.
What is the difference between Relative path and absolute path?
One has to be calculated with respect to another URI. The other does not.
Is there any performance issues occures for using these paths?
Nothing significant.
We will get any secure for the sites ?
No
Is there any way to converting absolute path to relative
In really simplified terms: Working from left to right, try to match the scheme, hostname, then path segments with the URI you are trying to be relative to. Stop when you have a match.
At first I used James Lawruk's method. This however changed all the widths of the td
's.
The solution for me was to use white-space: normal
on the columns (which was set to white-space: nowrap
). This way the text will always break. Using word-wrap: break-word
will ensure that everything will break when needed, even halfway through a word.
The CSS will look like this then:
td, th {
white-space: normal; /* Only needed when it's set differntly somewhere else */
word-wrap: break-word;
}
This might not always be the desirable solution, as word-wrap: break-word
might make your words in the table illegible. It will however keep your table the right width.
For passing in command line parameters. For example args[0]
will give you the first command line parameter, if there is one.
With Swift 5, according to your needs, you may choose one of the four following Playground code examples in order to solve your problem.
ClosedRange
reversed()
methodClosedRange
has a method called reversed()
. reversed()
method has the following declaration:
func reversed() -> ReversedCollection<ClosedRange<Bound>>
Returns a view presenting the elements of the collection in reverse order.
Usage:
let reversedCollection = (0 ... 5).reversed()
for index in reversedCollection {
print(index)
}
/*
Prints:
5
4
3
2
1
0
*/
As an alternative, you can use Range
reversed()
method:
let reversedCollection = (0 ..< 6).reversed()
for index in reversedCollection {
print(index)
}
/*
Prints:
5
4
3
2
1
0
*/
sequence(first:next:)
functionSwift Standard Library provides a function called sequence(first:next:)
. sequence(first:next:)
has the following declaration:
func sequence<T>(first: T, next: @escaping (T) -> T?) -> UnfoldFirstSequence<T>
Returns a sequence formed from
first
and repeated lazy applications ofnext
.
Usage:
let unfoldSequence = sequence(first: 5, next: {
$0 > 0 ? $0 - 1 : nil
})
for index in unfoldSequence {
print(index)
}
/*
Prints:
5
4
3
2
1
0
*/
stride(from:through:by:)
functionSwift Standard Library provides a function called stride(from:through:by:)
. stride(from:through:by:)
has the following declaration:
func stride<T>(from start: T, through end: T, by stride: T.Stride) -> StrideThrough<T> where T : Strideable
Returns a sequence from a starting value toward, and possibly including, an end value, stepping by the specified amount.
Usage:
let sequence = stride(from: 5, through: 0, by: -1)
for index in sequence {
print(index)
}
/*
Prints:
5
4
3
2
1
0
*/
As an alternative, you can use stride(from:to:by:)
:
let sequence = stride(from: 5, to: -1, by: -1)
for index in sequence {
print(index)
}
/*
Prints:
5
4
3
2
1
0
*/
AnyIterator
init(_:)
initializerAnyIterator
has an initializer called init(_:)
. init(_:)
has the following declaration:
init(_ body: @escaping () -> AnyIterator<Element>.Element?)
Creates an iterator that wraps the given closure in its
next()
method.
Usage:
var index = 5
guard index >= 0 else { fatalError("index must be positive or equal to zero") }
let iterator = AnyIterator({ () -> Int? in
defer { index = index - 1 }
return index >= 0 ? index : nil
})
for index in iterator {
print(index)
}
/*
Prints:
5
4
3
2
1
0
*/
If needed, you can refactor the previous code by creating an extension method for Int
and wrapping your iterator in it:
extension Int {
func iterateDownTo(_ endIndex: Int) -> AnyIterator<Int> {
var index = self
guard index >= endIndex else { fatalError("self must be greater than or equal to endIndex") }
let iterator = AnyIterator { () -> Int? in
defer { index = index - 1 }
return index >= endIndex ? index : nil
}
return iterator
}
}
let iterator = 5.iterateDownTo(0)
for index in iterator {
print(index)
}
/*
Prints:
5
4
3
2
1
0
*/
Simple solution that actually renames the elements in-place, not creating a copy, and does a pretty good job of replacing the attributes.
public void RemoveAllNamespaces(ref XElement value)
{
List<XAttribute> attributesToRemove = new List<XAttribute>();
foreach (void e_loopVariable in value.DescendantsAndSelf) {
e = e_loopVariable;
if (e.Name.Namespace != XNamespace.None) {
e.Name = e.Name.LocalName;
}
foreach (void a_loopVariable in e.Attributes) {
a = a_loopVariable;
if (a.IsNamespaceDeclaration) {
//do not keep it at all
attributesToRemove.Add(a);
} else if (a.Name.Namespace != XNamespace.None) {
e.SetAttributeValue(a.Name.LocalName, a.Value);
attributesToRemove.Add(a);
}
}
}
foreach (void a_loopVariable in attributesToRemove) {
a = a_loopVariable;
a.Remove();
}
}
Note: this does not always preserve original attribute order, but I'm sure you could change it to do that pretty easily if it's important to you.
Also note that this also could throw an exception, if you had an XElement attributes that are only unique with the namespace, like:
<root xmlns:ns1="a" xmlns:ns2="b">
<elem ns1:dupAttrib="" ns2:dupAttrib="" />
</root>
which really seems like an inherent problem. But since the question indicated outputing a String, not an XElement, in this case you could have a solution that would output a valid String that was an invalid XElement.
I also liked jocull's answer using a custom XmlWriter, but when I tried it, it did not work for me. Although it all looks correct, I couldn't tell if the XmlNoNamespaceWriter class had any effect at all; it definitely was not removing the namespaces as I wanted it to.
Here's another fix that works for me:
(event.target as HTMLInputElement).value
That should get rid of the error by letting TS know that event.target
is an HTMLInputElement
, which inherently has a value
. Before specifying, TS likely only knew that event
alone was an HTMLInputElement
, thus according to TS the keyed-in target
was some randomly mapped value that could be anything.
simply use the Out-File cmd but DON'T forget to give an encoding type:
-Encoding UTF8
so use it so:
$log | Out-File -Append C:\as\whatever.csv -Encoding UTF8
-Append is required if you want to write in the file more then once.
output:
Change Progress Color:
int normalColor = ContextCompat.getColor(context, R.color.normal_color);
int selectedColor = ContextCompat.getColor(context, R.color.selected_color);
Drawable normalDrawable = new ColorDrawable(normalColor);
Drawable selectedDrawable = new ColorDrawable(selectedColor);
ClipDrawable clipDrawable = new ClipDrawable(selectedDrawable, Gravity.LEFT, ClipDrawable.HORIZONTAL);
Drawable[] layers = {normalDrawable, clipDrawable, clipDrawable};
LayerDrawable seekbarDrawable = new LayerDrawable(layers);
seekBar.setProgressDrawable(seekbarDrawable);
Change Thumb Color:
int thumbColor = ContextCompat.getColor(context, R.color.thumb_color);
Drawable unwrappedDrawable = AppCompatResources.getDrawable(context, R.drawable.ic_seekbar_thumb);
assert unwrappedDrawable != null;
Drawable wrappedDrawable = DrawableCompat.wrap(unwrappedDrawable);
DrawableCompat.setTint(wrappedDrawable, thumbColor);
seekBar.setThumb(wrappedDrawable);
As explained by Ron, there are two variables, local and global. The local variable is always used, and is the same as global upon connection.
SET FOREIGN_KEY_CHECKS=0;
SET GLOBAL FOREIGN_KEY_CHECKS=0;
SHOW Variables WHERE Variable_name='foreign_key_checks'; # always shows local variable
When setting the GLOBAL variable, the local one isn't changed for any existing connections. You need to reconnect or set the local variable too.
Perhaps unintuitive, MYSQL does not enforce foreign keys when FOREIGN_KEY_CHECKS are re-enabled. This makes it possible to create an inconsistent database even though foreign keys and checks are on.
If you want your foreign keys to be completely consistent, you need to add the keys while checking is on.
The spec files are unit tests for your source files. The convention for Angular applications is to have a .spec.ts file for each .ts file. They are run using the Jasmine javascript test framework through the Karma test runner (https://karma-runner.github.io/) when you use the ng test
command.
You can use this for some further reading:
It is not possible to use the VOLUME
instruction to tell docker what to mount. That would seriously break portability. This instruction tells docker that content in those directories does not go in images and can be accessed from other containers using the --volumes-from
command line parameter. You have to run the container using -v /path/on/host:/path/in/container
to access directories from the host.
Mounting host volumes during build is not possible. There is no privileged build and mounting the host would also seriously degrade portability. You might want to try using wget or curl to download whatever you need for the build and put it in place.
The problem was the table width. I had used width: 100%
for the table. The table columns are adjusted automatically after removing the width tag.
# Write a Python program that accepts a string and calculate the number of digits
# andletters.
stre =input("enter the string-->")
countl = 0
countn = 0
counto = 0
for i in stre:
if i.isalpha():
countl += 1
elif i.isdigit():
countn += 1
else:
counto += 1
print("The number of letters are --", countl)
print("The number of numbers are --", countn)
print("The number of characters are --", counto)
I am using laravel5.2 and we can add joins with different options, you can modify as per your requirement.
Option 1:
DB::table('users')
->join('contacts', function ($join) {
$join->on('users.id', '=', 'contacts.user_id')->orOn(...);//you add more joins here
})// and you add more joins here
->get();
Option 2:
$users = DB::table('users')
->join('contacts', 'users.id', '=', 'contacts.user_id')
->join('orders', 'users.id', '=', 'orders.user_id')// you may add more joins
->select('users.*', 'contacts.phone', 'orders.price')
->get();
option 3:
$users = DB::table('users')
->leftJoin('posts', 'users.id', '=', 'posts.user_id')
->leftJoin('...', '...', '...', '...')// you may add more joins
->get();
String path = Environment.getExternalStorageDirectory().toString();
Log.d("Files", "Path: " + path);
File f = new File(path);
File file[] = f.listFiles();
Log.d("Files", "Size: " + file.length);
for (int i = 0; i < file.length; i++) {
//here populate your listview
Log.d("Files", "FileName:" + file[i].getName());
}
Okay, redis is pretty user friendly but there are some gotchas.
Here are just some easy commands for working with redis on Ubuntu:
install:
sudo apt-get install redis-server
start with conf:
sudo redis-server <path to conf>
sudo redis-server config/redis.conf
stop with conf:
redis-ctl shutdown
(not sure how this shuts down the pid specified in the conf. Redis must save the path to the pid somewhere on boot)
log:
tail -f /var/log/redis/redis-server.log
Also, various example confs floating around online and on this site were beyond useless. The best, sure fire way to get a compatible conf is to copy-paste the one your installation is already using. You should be able to find it here:
/etc/redis/redis.conf
Then paste it at <path to conf>
, tweak as needed and you're good to go.
Trevor Sullivan has a write-up on how to add a command called Copy-ItemWithProgress to PowerShell on Robocopy.
To avoid potentially unexpected results when using GROUP BY
without an aggregate function, as is used in the accepted answer, because MySQL is free to retrieve ANY value within the data set being grouped when not using an aggregate function [sic] and issues with ONLY_FULL_GROUP_BY
. Please consider using an exclusion join.
Assuming the firstname and lastname are uniquely indexed (unambiguous), an alternative to GROUP BY
is to sort using a LEFT JOIN
to filter the result set, otherwise known as an exclusion JOIN.
Ascending order (A-Z)
To retrieve the distinct firstname ordered by lastname from A-Z
Query
SELECT t1.*
FROM table_name AS t1
LEFT JOIN table_name AS t2
ON t1.firstname = t2.firstname
AND t1.lastname > t2.lastname
WHERE t2.id IS NULL;
Result
| id | firstname | lastname |
|----|-----------|----------|
| 2 | Bugs | Bunny |
| 1 | John | Doe |
Descending order (Z-A)
To retrieve the distinct firstname ordered by lastname from Z-A
Query
SELECT t1.*
FROM table_name AS t1
LEFT JOIN table_name AS t2
ON t1.firstname = t2.firstname
AND t1.lastname < t2.lastname
WHERE t2.id IS NULL;
Result
| id | firstname | lastname |
|----|-----------|----------|
| 2 | Bugs | Bunny |
| 3 | John | Johnson |
You can then order the resulting data as desired.
If the first and last name combination are not unique (ambiguous) and you have multiple rows of the same values, you can filter the result set by including an OR condition on the JOIN criteria to also filter by id.
table_name data
(1, 'John', 'Doe'),
(2, 'Bugs', 'Bunny'),
(3, 'John', 'Johnson'),
(4, 'John', 'Doe'),
(5, 'John', 'Johnson')
Query
SELECT t1.*
FROM table_name AS t1
LEFT JOIN table_name AS t2
ON t1.firstname = t2.firstname
AND (t1.lastname > t2.lastname
OR (t1.firstname = t1.firstname AND t1.lastname = t2.lastname AND t1.id > t2.id))
WHERE t2.id IS NULL;
Result
| id | firstname | lastname |
|----|-----------|----------|
| 1 | John | Doe |
| 2 | Bugs | Bunny |
EDIT
My original answer using an ordered subquery, was written prior to MySQL 5.7.5, which is no longer applicable, due to the changes with ONLY_FULL_GROUP_BY
. Please use the exclusion join examples above instead.
It is also important to note; when ONLY_FULL_GROUP_BY
is disabled (original behavior prior to MySQL 5.7.5), the use of GROUP BY
without an aggregate function may yield unexpected results, because MySQL is free to choose ANY value within the data set being grouped [sic].
Meaning an ID
or lastname
value may be retrieved that is not associated with the retrieved firstname
row.
WARNING
With MySQL GROUP BY
may not yield the expected results when used with ORDER BY
The best method of implementation, to ensure expected results, is to filter the result set scope using an ordered subquery.
table_name data
(1, 'John', 'Doe'),
(2, 'Bugs', 'Bunny'),
(3, 'John', 'Johnson')
Query
SELECT * FROM (
SELECT * FROM table_name ORDER BY ID DESC
) AS t1
GROUP BY FirstName
Result
| ID | first | last |
|----|-------|---------|
| 2 | Bugs | Bunny |
| 3 | John | Johnson |
Comparison
To demonstrate the unexpected results when using GROUP BY
in combination with ORDER BY
Query
SELECT * FROM table_name GROUP BY FirstName ORDER BY ID DESC
Result
| ID | first | last |
|----|-------|-------|
| 2 | Bugs | Bunny |
| 1 | John | Doe |
This is Pythoncode
Problem with alert boxes (especially sweet-alerts is that they have a delay and Selenium is pretty much too fast)
An Option that worked for me is:
while True:
try:
driver.find_element_by_xpath('//div[@class="sweet-alert showSweetAlert visible"]')
break
except:
wait = WebDriverWait(driver, 1000)
confirm_button = driver.find_element_by_xpath('//button[@class="confirm"]')
confirm_button.click()
var consolidatedChildren =
from c in children
group c by new
{
c.School,
c.Friend,
c.FavoriteColor,
} into gcs
select new ConsolidatedChild()
{
School = gcs.Key.School,
Friend = gcs.Key.Friend,
FavoriteColor = gcs.Key.FavoriteColor,
Children = gcs.ToList(),
};
var consolidatedChildren =
children
.GroupBy(c => new
{
c.School,
c.Friend,
c.FavoriteColor,
})
.Select(gcs => new ConsolidatedChild()
{
School = gcs.Key.School,
Friend = gcs.Key.Friend,
FavoriteColor = gcs.Key.FavoriteColor,
Children = gcs.ToList(),
});
Generate a protected application for Mac or Windows from your Excel spreadsheet using OfficeProtect with either AppProtect or QuickLicense/AddLicense. There is a demonstation video called "Protect Excel Spreedsheet" at www.excelsoftware.com/videos.
I accidentally set the wrong file permissions. After chmod 644 phpinfo.php
the info indeed showed up as expected.
Just found the solution to this for myself. What you want to set is the maxIdleTime of WebSocketServlet, in millis. How to do that depends on how you config your servlet. With Guice ServletModule you can do something like this for timeout of 10 hours:
serve("ws").with(MyWSServlet.class,
new HashMap<String, Sring>(){{ put("maxIdleTime", TimeUnit.HOURS.toMillis(10) + ""); }});
Anything <0 is infinite idle time I believe.
A good example given in book: Practical Python By Magnus Lie Hetland
>>> zip(range(5), xrange(100000000))
[(0, 0), (1, 1), (2, 2), (3, 3), (4, 4)]
I wouldn’t recommend using range instead of xrange in the preceding example—although only the first five numbers are needed, range calculates all the numbers, and that may take a lot of time. With xrange, this isn’t a problem because it calculates only those numbers needed.
Yes I read @Brian's answer: In python 3, range() is a generator anyway and xrange() does not exist.
For managing DataBase Objects in SQL Server i would suggest using Server Management Objects
I tried researching that too but instead ended up using jsconsole.com by Remy Sharp (he also created jsbin.com). I'm running on Ubuntu 12.10 so I had to create a special icon but if you're on Windows and use Chrome simply go to Tools>Create Application Shortcuts (note this doesn't work very well, or at all in my case, on Ubuntu). This site works very like the Mac jsc
console: actually it has some cool features too (like loading libraries/code from a URL) that I guess jsc
does not.
Hope this helps.
I need to somehow query Google and ask: Is this access token valid for [email protected]?
No. All you need is request standard login with Federated Login for Google Account Users from your API domain. And only after that you could compare "persistent user ID" with one you have from 'public interface'.
The value of realm is used on the Google Federated Login page to identify the requesting site to the user. It is also used to determine the value of the persistent user ID returned by Google.
So you need be from same domain as 'public interface'.
And do not forget that user needs to be sure that your API could be trusted ;) So Google will ask user if it allows you to check for his identity.
Learned a lot from Jamiec's answer.
If the only need is to generate CSV string, you may try this.
var csv3 = string.Join(",",chars);
Here is a test with 1 million strings
0.28 seconds = Aggregate w/ String Builder
0.30 seconds = String.Join
Source code is here
This is all you need.
rsync -e ssh file host:/directory/.
Well, you could make a custom function:
function custom_echo($x, $length)
{
if(strlen($x)<=$length)
{
echo $x;
}
else
{
$y=substr($x,0,$length) . '...';
echo $y;
}
}
You use it like this:
<?php custom_echo($row['style-info'], 200); ?>
I just recently had the same problem. I have made this work around, hope it will help someone.
HTML + tailwind
<div class="dashed-border h-14 w-full relative rounded-lg">
<div class="w-full h-full rounded-lg bg-page z-10 relative">
Content goes here...
<div>
</div>
CSS
.dashed-border::before {
content: '';
position: absolute;
top: 50%;
left: 0;
width: 100%;
height: calc(100% + 4px);
transform: translateY(-50%);
background-image: linear-gradient(to right, #333 50%, transparent 50%);
background-size: 16px;
z-index: 0;
border-radius: 0.5rem;
}
.dashed-border::after {
content: '';
position: absolute;
left: 50%;
top: 0;
height: 100%;
width: calc(100% + 4px);
transform: translateX(-50%);
background-image: linear-gradient(to bottom, #333 50%, transparent 50%);
background-size: 4px 16px;
z-index: 1;
border-radius: 0.5rem;
}
You can use the ProcessExit
event of the AppDomain
:
class Program
{
static void Main(string[] args)
{
AppDomain.CurrentDomain.ProcessExit += new EventHandler(CurrentDomain_ProcessExit);
// do some work
}
static void CurrentDomain_ProcessExit(object sender, EventArgs e)
{
Console.WriteLine("exit");
}
}
Update
Here is a full example program with an empty "message pump" running on a separate thread, that allows the user to input a quit command in the console to close down the application gracefully. After the loop in MessagePump you will probably want to clean up resources used by the thread in a nice manner. It's better to do that there than in ProcessExit for several reasons:
Here is the code:
class Program
{
private static bool _quitRequested = false;
private static object _syncLock = new object();
private static AutoResetEvent _waitHandle = new AutoResetEvent(false);
static void Main(string[] args)
{
AppDomain.CurrentDomain.ProcessExit += new EventHandler(CurrentDomain_ProcessExit);
// start the message pumping thread
Thread msgThread = new Thread(MessagePump);
msgThread.Start();
// read input to detect "quit" command
string command = string.Empty;
do
{
command = Console.ReadLine();
} while (!command.Equals("quit", StringComparison.InvariantCultureIgnoreCase));
// signal that we want to quit
SetQuitRequested();
// wait until the message pump says it's done
_waitHandle.WaitOne();
// perform any additional cleanup, logging or whatever
}
private static void SetQuitRequested()
{
lock (_syncLock)
{
_quitRequested = true;
}
}
private static void MessagePump()
{
do
{
// act on messages
} while (!_quitRequested);
_waitHandle.Set();
}
static void CurrentDomain_ProcessExit(object sender, EventArgs e)
{
Console.WriteLine("exit");
}
}
SQL> grant create any procedure to testdb;
This is a command when we want to give create privilege to "testdb" user.
There are in fact multiples things you need to know about indentation in Python:
In a lot of other languages the indention is not necessary but improves readability. In Python indentation replaces the keyword begin / end
or { }
and is therefore necessary.
This is verified before the execution of the code, therefore even if the code with the indentation error is never reached, it won't work.
1. "IndentationError: expected an indented block"
They are two main reasons why you could have such an error:
- You have a ":" without an indented block behind.
Here are two examples:
Example 1, no indented block:
Input:
if 3 != 4:
print("usual")
else:
Output:
File "<stdin>", line 4
^
IndentationError: expected an indented block
The output states that you need to have an indented block on line 4, after the else:
statement
Example 2, unindented block:
Input:
if 3 != 4:
print("usual")
Output
File "<stdin>", line 2
print("usual")
^
IndentationError: expected an indented block
The output states that you need to have an indented block line 2, after the if 3 != 4:
statement
- You are using Python2.x and have a mix of tabs and spaces:
Input
def foo():
if 1:
print 1
Please note that before if, there is a tab, and before print there is 8 spaces.
Output:
File "<stdin>", line 3
print 1
^
IndentationError: expected an indented block
It's quite hard to understand what is happening here, it seems that there is an indent block... But as I said, I've used tabs and spaces, and you should never do that.
2. "IndentationError: unexpected indent"
It is important to indent blocks, but only blocks that should be indent. So basically this error says:
- You have an indented block without a ":" before it.
Example:
Input:
a = 3
a += 3
Output:
File "<stdin>", line 2
a += 3
^
IndentationError: unexpected indent
The output states that he wasn't expecting an indent block line 2, then you should remove it.
3. "TabError: inconsistent use of tabs and spaces in indentation" (python3.x only)
Just look at the line number of the error, and fix it using the previous information.
I think you want SYSDATE
, not GETDATE()
. Try it:
UPDATE TableName SET LastModifiedDate = (SELECT SYSDATE FROM DUAL);
Maybe this is a bit redundant, but no one appeared to have mentioned this as a solution.
As a beginner in SQL I find that when using a BEGIN
and END
SSMS usually adds a squiggly line with incorrect syntax near 'END'
to END, simply because there's no content in between yet. If you're just setting up BEGIN
and END
to get started and add the actual query later, then simply add a bogus PRINT
statement so SSMS stops bothering you.
For example:
IF (1=1)
BEGIN
PRINT 'BOGUS'
END
The following will indeed set you on the wrong track, thinking you made a syntax error which in this case just means you still need to add content in between BEGIN and END:
IF (1=1)
BEGIN
END
You could also use realpath.
realpath(".")
returns your document root.
You can call realpath with your specific path. Note that it will NOT work if the target folder or file does not exist. In such case it will return false, which could be useful for testing if a file exists.
In my case I needed to specify a path for a new file to be written to disk, and the solution was to append the path relative to document root:
$filepath = realpath(".") . "/path/to/newfile.txt";
Hope this helps anyone.
You've got the right idea, but for /f
is designed to work on multi-line files or commands, not individual strings.
In its simplest form, for
is like Perl's for
, or every other language's foreach
. You pass it a list of tokens, and it iterates over them, calling the same command each time.
for %a in (hello world) do @echo %a
The extensions merely provide automatic ways of building the list of tokens. The reason your current code is coming up with nothing is that ';
' is the default end of line (comment) symbol. But even if you change that, you'd have to use %%g, %%h, %%i, ...
to access the individual tokens, which will severely limit your batch file.
The closest you can get to what you ask for is:
set TabbedPath=%PATH:;= %
for %%g in (%TabbedPath%) do echo %%g
But that will fail for quoted paths that contain semicolons.
In my experience, for /l
and for /r
are good for extending existing commands, but otherwise for
is extremely limited. You can make it slightly more powerful (and confusing) with delayed variable expansion (cmd /v:on
), but it's really only good for lists of filenames.
I'd suggest using WSH or PowerShell if you need to perform string manipulation. If you're trying to write whereis
for Windows, try where /?
.
My solution was (using Spring) putting the method that fails inside another method that creates and commits the transaction.
To do that I first injected the following:
@Autowired
private PlatformTransactionManager transactionManager;
And finally did this:
public void newMethod() {
DefaultTransactionDefinition definition = new DefaultTransactionDefinition();
TransactionStatus transaction = transactionManager.getTransaction(definition);
oldMethod();
transactionManager.commit(transaction);
}
This error occurred when you are putting JPA dependencies in your spring-boot configuration file like in maven or gradle. The solution is: Spring-Boot Documentation
You have to specify the DB connection string and driver details in application.properties file. This will solve the issue. This might help to someone.
There is a 3rd party debugger in the works, it's currently in preview, but you can install the debugger Android extension in VSCode right now and get more information on it here:
Here's a solution using jQuery:
<script type="text/javascript">
$('#container').css('opacity', 0);
$(window).load(function() {
$('#container').css('opacity', 1);
});
</script>
I put this script just after my </body>
tag. Just replace "#container" with a selector for the DOM element(s) you want to hide. I tried several variations of this (including .hide()
/.show()
, and .fadeOut()
/.fadeIn()
), and just setting the opacity seems to have the fewest ill effects (flicker, changing page height, etc.). You can also replace css('opacity', 0)
with fadeTo(100, 1)
for a smoother transition. (No, fadeIn()
won't work, at least not under jQuery 1.3.2.)
Now the caveats: I implemented the above because I'm using TypeKit and there's an annoying flicker when you refresh the page and the fonts take a few hundred milliseconds to load. So I don't want any text to appear on the screen until TypeKit has loaded. But obviously you're in big trouble if you use the code above and something on your page fails to load. There are two obvious ways that it could be improved:
I won't bother implementing the loading indicator here, but the time limit is easy. Just add this to the script above:
$(document).ready(function() {
setTimeout('$("#container").css("opacity", 1)', 1000);
});
So now, worst-case scenario, your page will take an extra second to appear.
Set the Maximise property to False.
I know this does not answer your question, but I always end up on this page, when I search for the matplotlib solution to histograms, because the simple histogram_demo
was removed from the matplotlib example gallery page.
Here is a solution, which doesn't require numpy
to be imported. I only import numpy to generate the data x
to be plotted. It relies on the function hist
instead of the function bar
as in the answer by @unutbu.
import numpy as np
mu, sigma = 100, 15
x = mu + sigma * np.random.randn(10000)
import matplotlib.pyplot as plt
plt.hist(x, bins=50)
plt.savefig('hist.png')
Also check out the matplotlib gallery and the matplotlib examples.
In the case you want to combine several date format into one, this is how we can do using intl
.
DateFormat('yMMMd').addPattern(DateFormat.HOUR24_MINUTE).format(yourDateTime))
To update all possible packages I used conda update --update-all
It works!
If libncurses is not installed then install it and try again.
sudo apt-get install libncurses5:i386
or sudo apt-get install libncurses5
for 64 bit binaries
Also install the collection of libraries by using this command
sudo apt-get install ia32-libs
Check if this solves the problem:
<div class="container-fluid no-padding">
<div class="row">
<div class="col-md-12">
<img src="https://placeholdit.imgix.net/~text?txtsize=33&txt=1300%C3%97400&w=1300&h=400" alt="placeholder 960" class="img-responsive" />
</div>
</div>
</div>
CSS
.no-padding {
padding-left: 0;
padding-right: 0;
}
Css class no-padding
will override default bootstrap container padding.
Full example here.
@Update If you use bootstrap 4 it could be done even simpler
<div class="container-fluid px-0">
<div class="row">
<div class="col-md-12">
<img src="https://placeholdit.imgix.net/~text?txtsize=33&txt=1300%C3%97400&w=1300&h=400" alt="placeholder 960" class="img-responsive" />
</div>
</div>
</div>
Updated example here.
You can also use the matrix
command, to create a matrix with n lines and m columns, filled with zeros.
matrix(0, n, m)
Here is small utility class that converts JSON to DataFrame and back: Hope you find this helpful.
# -*- coding: utf-8 -*-
from pandas.io.json import json_normalize
class DFConverter:
#Converts the input JSON to a DataFrame
def convertToDF(self,dfJSON):
return(json_normalize(dfJSON))
#Converts the input DataFrame to JSON
def convertToJSON(self, df):
resultJSON = df.to_json(orient='records')
return(resultJSON)
I want share my experience. A few days ago I have to update 21 million records in table with 76 million records. My colleague suggested the next variant. For example, we have the next table 'Persons':
Id | FirstName | LastName | Email | JobTitle
1 | John | Doe | [email protected] | Software Developer
2 | John1 | Doe1 | [email protected] | Software Developer
3 | John2 | Doe2 | [email protected] | Web Designer
Task: Update persons to the new Job Title: 'Software Developer' -> 'Web Developer'.
1. Create Temporary Table 'Persons_SoftwareDeveloper_To_WebDeveloper (Id INT Primary Key)'
2. Select into temporary table persons which you want to update with the new Job Title:
INSERT INTO Persons_SoftwareDeveloper_To_WebDeveloper SELECT Id FROM
Persons WITH(NOLOCK) --avoid lock
WHERE JobTitle = 'Software Developer'
OPTION(MAXDOP 1) -- use only one core
Depends on rows count, this statement will take some time to fill your temporary table, but it would avoid locks. In my situation it took about 5 minutes (21 million rows).
3. The main idea is to generate micro sql statements to update database. So, let's print them:
DECLARE @i INT, @pagesize INT, @totalPersons INT
SET @i=0
SET @pagesize=2000
SELECT @totalPersons = MAX(Id) FROM Persons
while @i<= @totalPersons
begin
Print '
UPDATE persons
SET persons.JobTitle = ''ASP.NET Developer''
FROM Persons_SoftwareDeveloper_To_WebDeveloper tmp
JOIN Persons persons ON tmp.Id = persons.Id
where persons.Id between '+cast(@i as varchar(20)) +' and '+cast(@i+@pagesize as varchar(20)) +'
PRINT ''Page ' + cast((@i / @pageSize) as varchar(20)) + ' of ' + cast(@totalPersons/@pageSize as varchar(20))+'
GO
'
set @i=@i+@pagesize
end
After executing this script you will receive hundreds of batches which you can execute in one tab of MS SQL Management Studio.
4. Run printed sql statements and check for locks on table. You always can stop process and play with @pageSize to speed up or speed down updating(don't forget to change @i after you pause script).
5. Drop Persons_SoftwareDeveloper_To_AspNetDeveloper. Remove temporary table.
Minor Note: This migration could take a time and new rows with invalid data could be inserted during migration. So, firstly fix places where your rows adds. In my situation I fixed UI, 'Software Developer' -> 'Web Developer'.
Even i was having the same problem with python virtualenv It got corrected by a simple restart
sudo shutdown -r now
Whilst not disagreeing with the complex answers about half-way marks and so on, for the more common (and possibly trivial) use-case:
my $rounded = int($float + 0.5);
UPDATE
If it's possible for your $float
to be negative, the following variation will produce the correct result:
my $rounded = int($float + $float/abs($float*2 || 1));
With this calculation -1.4 is rounded to -1, and -1.6 to -2, and zero won't explode.
In [5]: list(set(temp1) - set(temp2))
Out[5]: ['Four', 'Three']
Beware that
In [5]: set([1, 2]) - set([2, 3])
Out[5]: set([1])
where you might expect/want it to equal set([1, 3])
. If you do want set([1, 3])
as your answer, you'll need to use set([1, 2]).symmetric_difference(set([2, 3]))
.
Another table that is useful is:
SELECT * FROM user_objects WHERE object_type='TRIGGER';
You can also use this to query views, indexes etc etc
Another option is to pass the single quote as an awk variable:
awk -v q=\' 'BEGIN {FS=" ";} {printf "%s%s%s ", q, $1, q}'
Simpler example with string concatenation:
# Prints 'test me', *including* the single quotes.
$ awk -v q=\' '{print q $0 q }' <<<'test me'
'test me'
You can declare an object of a class in another Class,that's possible but you cant initialize that object. For that you need to do something like this :--> (inside main)
Orderbook o1;
o1.m.check(side)
but that would be unnecessary. Keeping things short :-
You can't call functions inside a Class
Even if you do not have the pid, you can trigger 'wait;' after triggering all background processes. For. eg. in commandfile.sh-
bteq < input_file1.sql > output_file1.sql &
bteq < input_file2.sql > output_file2.sql &
bteq < input_file3.sql > output_file3.sql &
wait
Then when this is triggered, as -
subprocess.call(['sh', 'commandfile.sh'])
print('all background processes done.')
This will be printed only after all the background processes are done.
You can store the old innerHTML of the div in a variable. Set an interval to check if the old content matches the current content. When this isn't true do something.
Alternate solution to doing shallow clone (git clone --depth=1 <URL>
) would be, if remote side supports it, to use --remote
option of git archive:
$ git archive --format=tar --remote=<repository URL> HEAD | tar xf -
Or, if remote repository in question is browse-able using some web interface like gitweb or GitHub, then there is a chance that it has 'snapshot' feature, and you can download latest version (without versioning information) from web interface.
Verify the length
property of the array to be greater than 0
:
<p ng-if="post.capabilities.items.length > 0">
<strong>Topics</strong>:
<span ng-repeat="topic in post.capabilities.items">
{{topic.name}}
</span>
</p>
Arrays (objects) in JavaScript are truthy values, so your initial verification <p ng-if="post.capabilities.items">
evaluates always to true
, even if the array is empty.
Here is a sample project for a soft keyboard.
https://developer.android.com/guide/topics/text/creating-input-method.html
Your's should be in the same lines with a different layout.
Edit: If you need the keyboard only in your application, its very simple! Create a linear layout with vertical orientation, and create 3 linear layouts inside it with horizontal orientation. Then place the buttons of each row in each of those horizontal linear layouts, and assign the weight property to the buttons. Use android:layout_weight=1 for all of them, so they get equally spaced.
This will solve. If you didn't get what was expected, please post the code here, and we are here to help you!
Consider these filenames:
C:\temp\file.txt
- This is a path, an absolute path, and a canonical path.
.\file.txt
- This is a path. It's neither an absolute path nor a canonical path.
C:\temp\myapp\bin\..\\..\file.txt
- This is a path and an absolute path. It's not a canonical path.
A canonical path is always an absolute path.
Converting from a path to a canonical path makes it absolute (usually tack on the current working directory so e.g. ./file.txt
becomes c:/temp/file.txt
). The canonical path of a file just "purifies" the path, removing and resolving stuff like ..\
and resolving symlinks (on unixes).
Also note the following example with nio.Paths:
String canonical_path_string = "C:\\Windows\\System32\\";
String absolute_path_string = "C:\\Windows\\System32\\drivers\\..\\";
System.out.println(Paths.get(canonical_path_string).getParent());
System.out.println(Paths.get(absolute_path_string).getParent());
While both paths refer to the same location, the output will be quite different:
C:\Windows
C:\Windows\System32\drivers
<?php
if(!@mysql_connect('127.0.0.1', 'root', '*your default password*'))
{
echo "mysql not connected ".mysql_error();
exit;
}
echo 'great work';
?>
if no error then you will get greatwork as output.
Try it saved my life XD XD
open command prompt
python pip install <package-name>
This should complete the process
SimpleDateFormat has a constructor which takes the locale, have you tried that?
http://java.sun.com/javase/6/docs/api/java/text/SimpleDateFormat.html
Something like
new SimpleDateFormat("your-pattern-here", Locale.getDefault());
You can use scipy for p-value. This code is from scipy documentation.
>>> from scipy import stats >>> import numpy as np >>> x = np.random.random(10) >>> y = np.random.random(10) >>> slope, intercept, r_value, p_value, std_err = stats.linregress(x,y)
Something like this could be useful:
char str[] = "0x1800785";
int num;
sscanf(str, "%x", &num);
printf("0x%x %i\n", num, num);
Read man sscanf
For every field that has choices set, the object will have a get_FOO_display() method, where FOO is the name of the field. This method returns the “human-readable” value of the field.
In Views
person = Person.objects.filter(to_be_listed=True)
context['gender'] = person.get_gender_display()
In Template
{{ person.get_gender_display }}
Based on ArsenMkrt's reply, but this one allows you to capture a control in your form (I'm writing a tool for example that has a WebBrowser control in it and want to capture just its display). Note the use of PointToScreen method:
//Project: WebCapture
//Filename: ScreenshotUtils.cs
//Author: George Birbilis (http://zoomicon.com)
//Version: 20130820
using System.Drawing;
using System.Windows.Forms;
namespace WebCapture
{
public static class ScreenshotUtils
{
public static Rectangle Offseted(this Rectangle r, Point p)
{
r.Offset(p);
return r;
}
public static Bitmap GetScreenshot(this Control c)
{
return GetScreenshot(new Rectangle(c.PointToScreen(Point.Empty), c.Size));
}
public static Bitmap GetScreenshot(Rectangle bounds)
{
Bitmap bitmap = new Bitmap(bounds.Width, bounds.Height);
using (Graphics g = Graphics.FromImage(bitmap))
g.CopyFromScreen(new Point(bounds.Left, bounds.Top), Point.Empty, bounds.Size);
return bitmap;
}
public const string DEFAULT_IMAGESAVEFILEDIALOG_TITLE = "Save image";
public const string DEFAULT_IMAGESAVEFILEDIALOG_FILTER = "PNG Image (*.png)|*.png|JPEG Image (*.jpg)|*.jpg|Bitmap Image (*.bmp)|*.bmp|GIF Image (*.gif)|*.gif";
public const string CUSTOMPLACES_COMPUTER = "0AC0837C-BBF8-452A-850D-79D08E667CA7";
public const string CUSTOMPLACES_DESKTOP = "B4BFCC3A-DB2C-424C-B029-7FE99A87C641";
public const string CUSTOMPLACES_DOCUMENTS = "FDD39AD0-238F-46AF-ADB4-6C85480369C7";
public const string CUSTOMPLACES_PICTURES = "33E28130-4E1E-4676-835A-98395C3BC3BB";
public const string CUSTOMPLACES_PUBLICPICTURES = "B6EBFB86-6907-413C-9AF7-4FC2ABF07CC5";
public const string CUSTOMPLACES_RECENT = "AE50C081-EBD2-438A-8655-8A092E34987A";
public static SaveFileDialog GetImageSaveFileDialog(
string title = DEFAULT_IMAGESAVEFILEDIALOG_TITLE,
string filter = DEFAULT_IMAGESAVEFILEDIALOG_FILTER)
{
SaveFileDialog dialog = new SaveFileDialog();
dialog.Title = title;
dialog.Filter = filter;
/* //this seems to throw error on Windows Server 2008 R2, must be for Windows Vista only
dialog.CustomPlaces.Add(CUSTOMPLACES_COMPUTER);
dialog.CustomPlaces.Add(CUSTOMPLACES_DESKTOP);
dialog.CustomPlaces.Add(CUSTOMPLACES_DOCUMENTS);
dialog.CustomPlaces.Add(CUSTOMPLACES_PICTURES);
dialog.CustomPlaces.Add(CUSTOMPLACES_PUBLICPICTURES);
dialog.CustomPlaces.Add(CUSTOMPLACES_RECENT);
*/
return dialog;
}
public static void ShowSaveFileDialog(this Image image, IWin32Window owner = null)
{
using (SaveFileDialog dlg = GetImageSaveFileDialog())
if (dlg.ShowDialog(owner) == DialogResult.OK)
image.Save(dlg.FileName);
}
}
}
Having the Bitmap object you can just call Save on it
private void btnCapture_Click(object sender, EventArgs e)
{
webBrowser.GetScreenshot().Save("C://test.jpg", ImageFormat.Jpeg);
}
The above assumes the GC will grab the bitmap, but maybe it's better to assign the result of someControl.getScreenshot() to a Bitmap variable, then dispose that variable manually when finished with each image, especially if you're doing this grabbing often (say you have a list of webpages you want to load and save screenshots of them):
private void btnCapture_Click(object sender, EventArgs e)
{
Bitmap bitmap = webBrowser.GetScreenshot();
bitmap.ShowSaveFileDialog();
bitmap.Dispose(); //release bitmap resources
}
Even better, could employ a using clause, which has the added benefit of releasing the bitmap resources even in case of an exception occuring inside the using (child) block:
private void btnCapture_Click(object sender, EventArgs e)
{
using(Bitmap bitmap = webBrowser.GetScreenshot())
bitmap.ShowSaveFileDialog();
//exit from using block will release bitmap resources even if exception occured
}
Update:
Now WebCapture tool is ClickOnce-deployed (http://gallery.clipflair.net/WebCapture) from the web (also has nice autoupdate support thanks to ClickOnce) and you can find its source code at https://github.com/Zoomicon/ClipFlair/tree/master/Server/Tools/WebCapture
Set elevation: 3
and you should see the shadow in bottom of component without a 3rd party lib. At least in RN 0.57.4
If you don't want to include the full path, you can do
add_executable(main main.cpp)
target_link_libraries(main bingitup)
bingitup
is the same name you'd give a target if you create the static library in a CMake project:
add_library(bingitup STATIC bingitup.cpp)
CMake automatically adds the lib
to the front and the .a
at the end on Linux, and .lib
at the end on Windows.
If the library is external, you might want to add the path to the library using
link_directories(/path/to/libraries/)
Back to Jonathan002's original question about
"... what version supports the new ES6 import statements?"
based on the article by Dr. Axel Rauschmayer, there is a plan to have it supported by default (without the experimental command line flag) in Node.js 10.x LTS. According to node.js's release plan as it is on 3/29, 2018, it's likely to become available after Apr 2018, while LTS of it will begin on October 2018.
From @sidharth: "caused my lava iris alfa to go into a bootloop :("
For my Motorola Nexus 6 running Android Marshmallow 6.0.1 I did:
adb devices # Check the phone is running
adb reboot bootloader
# Wait a few seconds
fastboot devices # Check the phone is in bootloader
fastboot -w # Wipe user data
You actually do not want to get the path to your main class. According to your example you want to get the current working directory, i.e. directory where your program started. In this case you can just say new File(".").getAbsolutePath()
All WebServices is API but all API is not WebServices, API which is exposed on Web is called web services.
I'm afraid that the first of those command lines unconditionally deleted from the working copy all the files that are in git's staging area. The second one unstaged all the files that were tracked but have now been deleted. Unfortunately this means that you will have lost any uncommitted modifications to those files.
If you want to get your working copy and index back to how they were at the last commit, you can (carefully) use the following command:
git reset --hard
I say "carefully" since git reset --hard
will obliterate uncommitted changes in your working copy and index. However, in this situation it sounds as if you just want to go back to the state at your last commit, and the uncommitted changes have been lost anyway.
Update: it sounds from your comments on Amber's answer that you haven't yet created any commits (since HEAD cannot be resolved), so this won't help, I'm afraid.
As for how those pipes work: git ls-files -z
and git diff --name-only --diff-filter=D -z
both output a list of file names separated with the byte 0
. (This is useful, since, unlike newlines, 0
bytes are guaranteed not to occur in filenames on Unix-like systems.) The program xargs
essentially builds command lines from its standard input, by default by taking lines from standard input and adding them to the end of the command line. The -0
option says to expect standard input to by separated by 0
bytes. xargs
may invoke the command several times to use up all the parameters from standard input, making sure that the command line never becomes too long.
As a simple example, if you have a file called test.txt
, with the following contents:
hello
goodbye
hello again
... then the command xargs echo whatever < test.txt
will invoke the command:
echo whatever hello goodbye hello again
40 methods in a single class is a bit much.
Would it make sense to move some of the functionality into other - suitably named - classes. Then it is much easier to make sense of.
When you have fewer, it is much easier to list them in a natural reading order. A frequent paradigm is to list things either before or after you need them , in the order you need them.
This usually means that main()
goes on top or on bottom.
For Spring 2.5, there's no @Primary
. The only way is to use @Qualifier
.
matrix.size
according to the numpy docs returns the Number of elements in the array.
Hope that helps.
For reference, I had this error message and the solution was that when you specify the library you miss the 'lib' off the front and the '.so' from the end.
So, if you have a file libmyfablib.so, you need to call:
System.loadLibrary("myfablib"); // this loads the file 'libmyfablib.so'
Having looked in the apk, installed/uninstalled and tried all kinds of complex solutions I couldn't see the simple problem that was right in front of my face!
As @filoxo said, you can use document.querySelectorAll
.
If you know that there is only one element with the class you are looking for, or you are interested only in the first one, you can use:
document.querySelector('.class1.class2');
BTW, while .class1.class2
indicates an element with both classes, .class1 .class2
(notice the whitespace) indicates an hierarchy - and element with class class2
which is inside en element with class class1
:
<div class='class1'>
<div>
<div class='class2'>
:
:
And if you want to force retrieving a direct child, use >
sign (.class1 > .class2
):
<div class='class1'>
<div class='class2'>
:
:
For entire information about selectors:
https://www.w3schools.com/jquery/jquery_ref_selectors.asp
Here is the code I use when I want to preload images before appending them to the page.
It is also important to check if the image is already loaded from the cache (for IE).
//create image to preload:
var imgPreload = new Image();
$(imgPreload).attr({
src: photoUrl
});
//check if the image is already loaded (cached):
if (imgPreload.complete || imgPreload.readyState === 4) {
//image loaded:
//your code here to insert image into page
} else {
//go fetch the image:
$(imgPreload).load(function (response, status, xhr) {
if (status == 'error') {
//image could not be loaded:
} else {
//image loaded:
//your code here to insert image into page
}
});
}
You want to do this:
git add -u
git reset HEAD path/to/file
git commit
Be sure and do this from the top level of the repo; add -u
adds changes in the current directory (recursively).
The key line tells git to reset the version of the given path in the index (the staging area for the commit) to the version from HEAD (the currently checked-out commit).
And advance warning of a gotcha for others reading this: add -u
stages all modifications, but doesn't add untracked files. This is the same as what commit -a
does. If you want to add untracked files too, use add .
to recursively add everything.
AndroidStudio is alpha version for now. So you have to edit gradle build script files by yourself. Add next lines to your build.gradle
android {
signingConfigs {
release {
storeFile file('android.keystore')
storePassword "pwd"
keyAlias "alias"
keyPassword "pwd"
}
}
buildTypes {
release {
signingConfig signingConfigs.release
}
}
}
To actually run your application at emulator or device run gradle installDebug
or gradle installRelease
.
You can create helloworld project from AndroidStudio wizard to see what structure of gradle files is needed. Or export gradle files from working eclipse project. Also this series of articles are helpfull http://blog.stylingandroid.com/archives/1872#more-1872
If your media query condition is true then your CSS with that condition will work. That means CSS within your media query's condition pixel size will effect, or else if the condition will fail that mean if the device's width is greater than 1024px than your CSS will not work.Because your media query condition false.
max-width
is your max CSS limit till that width.
df = df.replace({np.nan: None})
Credit goes to this guy here on this Github issue.
Use regex.test()
if all you want is a boolean result:
console.log(/^([a-z0-9]{5,})$/.test('abc1')); // false_x000D_
_x000D_
console.log(/^([a-z0-9]{5,})$/.test('abc12')); // true_x000D_
_x000D_
console.log(/^([a-z0-9]{5,})$/.test('abc123')); // true
_x000D_
...and you could remove the ()
from your regexp since you've no need for a capture.
You could convert it to an array and then print that out with Arrays.toString(Object[])
:
System.out.println(Arrays.toString(stack.toArray()));
suds is pretty good. I tried SOAPpy but didn't get it to work in quite the way I needed whereas suds worked pretty much straight away.
'continue' is allowed within an 'except' or 'finally' only if the try block is in a loop. 'continue' will cause the next iteration of the loop to start.
So you can try put your two or more functions in a list and use loop to call your function.
Like this:
funcs = [f,g]
for func in funcs:
try: func()
except: continue
Here's a variation of Oscar's first version that doesn't use a for-each loop.
for (int i = 0; i < charArray.length; i++) {
if (charArray[i] == 'q') {
// do something
break;
}
}
You could have a boolean variable that gets set to false before the loop, then make "do something" set the variable to true, which you could test for after the loop. The loop could also be wrapped in a function call then just use 'return true' instead of the break, and add a 'return false' statement after the for loop.
There is no difference between the %i
and %d
format specifiers for printf
. We can see this by going to the draft C99 standard section 7.19.6.1
The fprintf function which also covers printf
with respect to format specifiers and it says in paragraph 8:
The conversion specifiers and their meanings are:
and includes the following bullet:
d,i The int argument is converted to signed decimal in the style [-]dddd. The precision specifies the minimum number of digits to appear; if the value being converted can be represented in fewer digits, it is expanded with leading zeros. The default precision is 1. The result of converting a zero value with a precision of zero is no characters.
On the other hand for scanf
there is a difference, %d
assume base 10 while %i
auto detects the base. We can see this by going to section 7.19.6.2
The fscanf function which covers scanf
with respect to format specifier, in paragraph 12 it says:
The conversion specifiers and their meanings are:
and includes the following:
d Matches an optionally signed decimal integer, whose format is the same as expected for the subject sequence of the strtol function with the value 10 for the base argument. The corresponding argument shall be a pointer to signed integer. i Matches an optionally signed integer, whose format is the same as expected for the subject sequence of the strtol function with the value 0 for the base argument. The corresponding argument shall be a pointer to signed integer.
For those not getting a solution for older answers, i simply put my file name as the very first line in my code.
like so
#ruby_file_name_here.rb
puts "hello world"
There are CSS options for the audio tag.
Like: html 5 audio tag width
But if you play around with it you'll see results can be unexpected - as of August 2012.
Your input has to be encoded as UTF-8 or ISO-8859-1.
http://www.php.net/manual/en/function.json-encode.php
Because if you try to convert an array of non-utf8 characters you'll be getting 0 as return value.
Since 5.5.0 The return value on failure was changed from null string to FALSE.
In case anybody comes back to this, I think the problem here was failing to install the parent pom first, which all these submodules depend on, so the Maven Reactor can't collect the necessary dependencies to build the submodule.
So from the root directory (here D:\luna_workspace\empire_club\empirecl
) it probably just needs a:
mvn clean install
(Aside: <relativePath>../pom.xml</relativePath>
is not really necessary as it's the default value).
You can actually use the Markdown Preprocessor (MarkdownPP). Running with the hypothetical book example from the other answers, you would create .mdpp
files representing your chapters. The .mdpp
files can then use the !INCLUDE "path/to/file.mdpp"
directive, which operates recursively replacing the directive with the contents of the referenced file in the final output.
chapters/preface.mdpp
chapters/introduction.mdpp
chapters/why_markdown_is_useful.mdpp
chapters/limitations_of_markdown.mdpp
chapters/conclusions.mdpp
You would then need an index.mdpp
that contained the following:
!INCLUDE "chapters/preface.mdpp"
!INCLUDE "chapters/introduction.mdpp"
!INCLUDE "chapters/why_markdown_is_useful.mdpp"
!INCLUDE "chapters/limitations_of_markdown.mdpp"
!INCLUDE "chapters/conclusions.mdpp"
To render your book you simply run the preprocessor on index.mdpp
:
$ markdown-pp.py index.mdpp mybook.md
Don't forget to look at the readme.mdpp
in the MarkdownPP repository for an exposition of preprocessor features suited for larger documentation projects.
Try as
String s = "ABC[ This is to extract ]";
Pattern p = Pattern.compile(".*\\[ *(.*) *\\].*");
Matcher m = p.matcher(s);
m.find();
String text = m.group(1);
System.out.println(text);
You could use JavaScript and trigger the hidden file input when the button input has been clicked.
http://jsfiddle.net/gregorypratt/dhyzV/ - simple
http://jsfiddle.net/gregorypratt/dhyzV/1/ - fancier with a little JQuery
Or, you could style a div directly over the file input and set pointer-events
in CSS to none to allow the click events to pass through to the file input that is "behind" the fancy div. This only works in certain browsers though; http://caniuse.com/pointer-events
I think df['word'].value_counts()
should serve. By skipping the groupby machinery, you'll save some time. I'm not sure why count
should be much slower than max
. Both take some time to avoid missing values. (Compare with size
.)
In any case, value_counts has been specifically optimized to handle object type, like your words, so I doubt you'll do much better than that.
Try this:
USE master
GO
xp_readerrorlog 0, 1, N'Server is listening on'
GO
http://www.mssqltips.com/sqlservertip/2495/identify-sql-server-tcp-ip-port-being-used/
With debug turned off Django won't handle static files for you any more - your production web server (Apache or something) should take care of that.
Although it doesn't really answers this specific question. Others got the same error message with this mistake.
For those who like me initial forgot the -r
: Use pip install -r requirements.txt
the -r
is essential for the command.
The original answer:
How you detect EOF depends on what you're using to read the stream:
function result on EOF or error
-------- ----------------------
fgets() NULL
fscanf() number of succesful conversions
less than expected
fgetc() EOF
fread() number of elements read
less than expected
Check the result of the input call for the appropriate condition above, then call feof()
to determine if the result was due to hitting EOF or some other error.
Using fgets()
:
char buffer[BUFFER_SIZE];
while (fgets(buffer, sizeof buffer, stream) != NULL)
{
// process buffer
}
if (feof(stream))
{
// hit end of file
}
else
{
// some other error interrupted the read
}
Using fscanf()
:
char buffer[BUFFER_SIZE];
while (fscanf(stream, "%s", buffer) == 1) // expect 1 successful conversion
{
// process buffer
}
if (feof(stream))
{
// hit end of file
}
else
{
// some other error interrupted the read
}
Using fgetc()
:
int c;
while ((c = fgetc(stream)) != EOF)
{
// process c
}
if (feof(stream))
{
// hit end of file
}
else
{
// some other error interrupted the read
}
Using fread()
:
char buffer[BUFFER_SIZE];
while (fread(buffer, sizeof buffer, 1, stream) == 1) // expecting 1
// element of size
// BUFFER_SIZE
{
// process buffer
}
if (feof(stream))
{
// hit end of file
}
else
{
// some other error interrupted read
}
Note that the form is the same for all of them: check the result of the read operation; if it failed, then check for EOF. You'll see a lot of examples like:
while(!feof(stream))
{
fscanf(stream, "%s", buffer);
...
}
This form doesn't work the way people think it does, because feof()
won't return true until after you've attempted to read past the end of the file. As a result, the loop executes one time too many, which may or may not cause you some grief.
I have encountered that problem myself and I made my launchers in a .bat so you could choose the version you want to launch.
The only problem is your .py must be in the python folder, but anyway here is the code:
For Python2
@echo off
title Python2 Launcher by KinDa
cls
echo Type the exact version of Python you use (eg. 23, 24, 25, 26)
set/p version=
cls
echo Type the file you want to launch without .py (eg. hello world, calculator)
set/p launch=
path = %PATH%;C:\Python%version%
cd C:\Python%version%
python %launch%.py
pause
For Python3
@echo off
title Python3 Launcher by KinDa
cls
echo Type the exact version of Python you use (eg. 31, 32, 33, 34)
set/p version=
cls
echo Type the file you want to launch without .py (eg. hello world, calculator)
set/p launch=
cls
set path = %PATH%:C:\Python%version%
cd C:\Python%version%
python %launch%.py
pause
Save them as .bat and follow the instructions inside.
And my 15 cent. A one liner for the mac terminal etc just set the MIN= to whatever and a message
MIN=15 && for i in $(seq $(($MIN*60)) -1 1); do echo "$i, "; sleep 1; done; echo -e "\n\nMac Finder should show a popup" afplay /System/Library/Sounds/Funk.aiff; osascript -e 'tell app "Finder" to display dialog "Look away. Rest your eyes"'
A bonus example for inspiration to combine more commands; this will put a mac put to standby sleep upon the message too :) the sudo login is needed then, a multiplication as the 60*2 for two hours goes aswell
sudo su
clear; echo "\n\nPreparing for a sleep when timers done \n"; MIN=60*2 && for i in $(seq $(($MIN*60)) -1 1); do printf "\r%02d:%02d:%02d" $((i/3600)) $(( (i/60)%60)) $((i%60)); sleep 1; done; echo "\n\n Time to sleep zzZZ"; afplay /System/Library/Sounds/Funk.aiff; osascript -e 'tell app "Finder" to display dialog "Time to sleep zzZZ"'; shutdown -h +1 -s
Use slideToggle(500) function with a duration in milliseconds for getting a better effect.
Sample Html
<body>
<div class="growth-step js--growth-step">
<div class="step-title">
<div class="num">2.</div>
<h3>How Can Aria Help Your Business</h3>
</div>
<div class="step-details ">
<p>At Aria solutions, we’ve taken the consultancy concept one step further by offering a full service
management organization with expertise. </p>
</div>
</div>
<div class="growth-step js--growth-step">
<div class="step-title">
<div class="num">3.</div>
<h3>How Can Aria Help Your Business</h3>
</div>
<div class="step-details">
<p>At Aria solutions, we’ve taken the consultancy concept one step further by offering a full service
management organization with expertise. </p>
</div>
</div>
</body>
In your js file, if you need child propagation for the animation then remove the second click event function and its codes.
$(document).ready(function(){
$(".js--growth-step").click(function(event){
$(this).children(".step-details").slideToggle(500);
return false;
});
//for stoping child to manipulate the animation
$(".js--growth-step .step-details").click(function(event) {
event.stopPropagation();
});
});
If you only want to perform some specific operations by your second SP and do not require values back from the SP then simply do:
Exec secondSPName @anyparams
Else, if you need values returned by your second SP inside your first one, then create a temporary table variable with equal numbers of columns and with same definition of column return by second SP. Then you can get these values in first SP as:
Insert into @tep_table
Exec secondSPName @anyparams
Update:
To pass parameter to second sp, do this:
Declare @id ID_Column_datatype
Set @id=(Select id from table_1 Where yourconditions)
Exec secondSPName @id
Update 2:
Suppose your second sp returns Id
and Name
where type of id
is int
and name
is of varchar(64)
type.
now, if you want to select these values in first sp then create a temporary table
variable and insert values into it:
Declare @tep_table table
(
Id int,
Name varchar(64)
)
Insert into @tep_table
Exec secondSP
Select * From @tep_table
This will return you the values returned by second SP.
Hope, this clear all your doubts.
C++17 inline
variables
This awesome C++17 feature allow us to:
constexpr
: How to declare constexpr extern?main.cpp
#include <cassert>
#include "notmain.hpp"
int main() {
// Both files see the same memory address.
assert(¬main_i == notmain_func());
assert(notmain_i == 42);
}
notmain.hpp
#ifndef NOTMAIN_HPP
#define NOTMAIN_HPP
inline constexpr int notmain_i = 42;
const int* notmain_func();
#endif
notmain.cpp
#include "notmain.hpp"
const int* notmain_func() {
return ¬main_i;
}
Compile and run:
g++ -c -o notmain.o -std=c++17 -Wall -Wextra -pedantic notmain.cpp
g++ -c -o main.o -std=c++17 -Wall -Wextra -pedantic main.cpp
g++ -o main -std=c++17 -Wall -Wextra -pedantic main.o notmain.o
./main
See also: How do inline variables work?
C++ standard on inline variables
The C++ standard guarantees that the addresses will be the same. C++17 N4659 standard draft 10.1.6 "The inline specifier":
6 An inline function or variable with external linkage shall have the same address in all translation units.
cppreference https://en.cppreference.com/w/cpp/language/inline explains that if static
is not given, then it has external linkage.
Inline variable implementation
We can observe how it is implemented with:
nm main.o notmain.o
which contains:
main.o:
U _GLOBAL_OFFSET_TABLE_
U _Z12notmain_funcv
0000000000000028 r _ZZ4mainE19__PRETTY_FUNCTION__
U __assert_fail
0000000000000000 T main
0000000000000000 u notmain_i
notmain.o:
0000000000000000 T _Z12notmain_funcv
0000000000000000 u notmain_i
and man nm
says about u
:
"u" The symbol is a unique global symbol. This is a GNU extension to the standard set of ELF symbol bindings. For such a symbol the dynamic linker will make sure that in the entire process there is just one symbol with this name and type in use.
so we see that there is a dedicated ELF extension for this.
C++17 standard draft on "global" const
implies static
This is the quote for what was mentioned at: https://stackoverflow.com/a/12043198/895245
C++17 n4659 standard draft 6.5 "Program and linkage":
3 A name having namespace scope (6.3.6) has internal linkage if it is the name of
- (3.1) — a variable, function or function template that is explicitly declared static; or,
- (3.2) — a non-inline variable of non-volatile const-qualified type that is neither explicitly declared extern nor previously declared to have external linkage; or
- (3.3) — a data member of an anonymous union.
"namespace" scope is what we colloquially often refer to as "global".
Annex C (informative) Compatibility, C.1.2 Clause 6: "basic concepts" gives the rationale why this was changed from C:
6.5 [also 10.1.7]
Change: A name of file scope that is explicitly declared const, and not explicitly declared extern, has internal linkage, while in C it would have external linkage.
Rationale: Because const objects may be used as values during translation in C++, this feature urges programmers to provide an explicit initializer for each const object. This feature allows the user to put const objects in source files that are included in more than one translation unit.
Effect on original feature: Change to semantics of well-defined feature.
Difficulty of converting: Semantic transformation.
How widely used: Seldom.
See also: Why does const imply internal linkage in C++, when it doesn't in C?
Tested in GCC 7.4.0, Ubuntu 18.04.
upload_max_filesize = 1000M;
post_max_size = 1000M;
File>Project Settings>Change Build Systems to Legacy Build Systems
set -x
enables a mode of the shell where all executed commands are printed to the terminal. In your case it's clearly used for debugging, which is a typical use case for set -x
: printing every command as it is executed may help you to visualize the control flow of the script if it is not functioning as expected.
set +x
disables it.
Try this test:
any(substring in string for substring in substring_list)
It will return True
if any of the substrings in substring_list
is contained in string
.
Note that there is a Python analogue of Marc Gravell's answer in the linked question:
from itertools import imap
any(imap(string.__contains__, substring_list))
In Python 3, you can use map
directly instead:
any(map(string.__contains__, substring_list))
Probably the above version using a generator expression is more clear though.
>>>import json
>>>json_string = json.dumps("??? ????")
>>>json_string.encode('ascii').decode('unicode-escape')
'"??? ????"'
>>>s = '? ?a? ???'
>>>print('unicode: ' + s.encode('unicode-escape').decode('utf-8'))
unicode: \u6f22 \u03c7\u03b1\u03bd \u0445\u0430\u043d
>>>u = s.encode('unicode-escape').decode('utf-8')
>>>print('original: ' + u.encode("utf-8").decode('unicode-escape'))
original: ? ?a? ???
original resource:https://blog.csdn.net/chuatony/article/details/72628868
Block - Element take complete width.All properties height , width, margin , padding work
Inline - element take height and width according to the content. Height , width , margin bottom and margin top do not work .Padding and left and right margin work. Example span and anchor.
Inline block - 1. Element don't take complete width, that is why it has *inline* in its name. All properties including height , width, margin top and margin bottom work on it. Which also work in block level element.That's why it has *block* in its name.
TextField widget has a property decoration which has a sub property border: InputBorder.none
.This property would Remove TextField
Text Input Bottom Underline in Flutter app. So you can set the border
property of the decoration
of the TextField to InputBorder.none
, see here for an example:
border: InputBorder.none
: Hide bottom underline from Text Input widget.
Container(
width: 280,
padding: EdgeInsets.all(8.0),
child : TextField(
autocorrect: true,
decoration: InputDecoration(
border: InputBorder.none,
hintText: 'Enter Some Text Here')
)
)
Now, i'm being told that this will terminate the session (or is it all sessions?) in the 15th minute of use, regardless their activity.
No, that's not true. The session-timeout
configures a per session timeout in case of inactivity.
Are these methods equivalent? Should I favour the web.xml config?
The setting in the web.xml is global, it applies to all sessions of a given context. Programatically, you can change this for a particular session.
Well there is 2 ways to change the location.href
. Either you can write location.href = "y.html"
, which reloads the page or can use the history API which does not reload the page. I experimented with the first a lot recently.
If you open a child window and capture the load of the child page from the parent window, then different browsers behave very differently. The only thing that is common, that they remove the old document and add a new one, so for example adding readystatechange or load event handlers to the old document does not have any effect. Most of the browsers remove the event handlers from the window object too, the only exception is Firefox. In Chrome with Karma runner and in Firefox you can capture the new document in the loading readyState if you use unload + next tick
. So you can add for example a load event handler or a readystatechange event handler or just log that the browser is loading a page with a new URI. In Chrome with manual testing (probably GreaseMonkey too) and in Opera, PhantomJS, IE10, IE11 you cannot capture the new document in the loading state. In those browsers the unload + next tick
calls the callback a few hundred msecs later than the load event of the page fires. The delay is typically 100 to 300 msecs, but opera simetime makes a 750 msec delay for next tick, which is scary. So if you want a consistent result in all browsers, then you do what you want to after the load event, but there is no guarantee the location won't be overridden before that.
var uuid = "win." + Math.random();
var timeOrigin = new Date();
var win = window.open("about:blank", uuid, "menubar=yes,location=yes,resizable=yes,scrollbars=yes,status=yes");
var callBacks = [];
var uglyHax = function (){
var done = function (){
uglyHax();
callBacks.forEach(function (cb){
cb();
});
};
win.addEventListener("unload", function unloadListener(){
win.removeEventListener("unload", unloadListener); // Firefox remembers, other browsers don't
setTimeout(function (){
// IE10, IE11, Opera, PhantomJS, Chrome has a complete new document at this point
// Chrome on Karma, Firefox has a loading new document at this point
win.document.readyState; // IE10 and IE11 sometimes fails if I don't access it twice, idk. how or why
if (win.document.readyState === "complete")
done();
else
win.addEventListener("load", function (){
setTimeout(done, 0);
});
}, 0);
});
};
uglyHax();
callBacks.push(function (){
console.log("cb", win.location.href, win.document.readyState);
if (win.location.href !== "http://localhost:4444/y.html")
win.location.href = "http://localhost:4444/y.html";
else
console.log("done");
});
win.location.href = "http://localhost:4444/x.html";
If you run your script only in Firefox, then you can use a simplified version and capture the document in a loading state, so for example a script on the loaded page cannot navigate away before you log the URI change:
var uuid = "win." + Math.random();
var timeOrigin = new Date();
var win = window.open("about:blank", uuid, "menubar=yes,location=yes,resizable=yes,scrollbars=yes,status=yes");
var callBacks = [];
win.addEventListener("unload", function unloadListener(){
setTimeout(function (){
callBacks.forEach(function (cb){
cb();
});
}, 0);
});
callBacks.push(function (){
console.log("cb", win.location.href, win.document.readyState);
// be aware that the page is in loading readyState,
// so if you rewrite the location here, the actual page will be never loaded, just the new one
if (win.location.href !== "http://localhost:4444/y.html")
win.location.href = "http://localhost:4444/y.html";
else
console.log("done");
});
win.location.href = "http://localhost:4444/x.html";
If we are talking about single page applications which change the hash part of the URI, or use the history API, then you can use the hashchange
and the popstate
events of the window respectively. Those can capture even if you move in history back and forward until you stay on the same page. The document does not changes by those and the page is not really reloaded.
File from = new File(Environment.getExternalStorageDirectory().getAbsolutePath().getAbsolutePath()+"/kaic1/imagem.jpg");
File to = new File(Environment.getExternalStorageDirectory().getAbsolutePath()+"/kaic2/imagem.jpg");
from.renameTo(to);
Position the cursor inside the class, then press ALT + Ins and select Getters and Setters
from the contextual menu.
SSLSocketFactory does not expose its X509TrustManager, which is a field that OkHttp needs to build a clean certificate chain. This method instead must use reflection to extract the trust manager. Applications should prefer to call sslSocketFactory(SSLSocketFactory, X509TrustManager), which avoids such reflection.
Source: OkHttp documentation
OkHttpClient.Builder builder = new OkHttpClient.Builder();
builder.sslSocketFactory(sslContext.getSocketFactory(),
new X509TrustManager() {
@Override
public void checkClientTrusted(java.security.cert.X509Certificate[] chain, String authType) throws CertificateException {
}
@Override
public void checkServerTrusted(java.security.cert.X509Certificate[] chain, String authType) throws CertificateException {
}
@Override
public java.security.cert.X509Certificate[] getAcceptedIssuers() {
return new java.security.cert.X509Certificate[]{};
}
});
From Pro C# 5.0 and the .NET 4.5 Framework
The ObservableCollection<T>
class is very useful in that it has the ability to inform external objects
when its contents have changed in some way (as you might guess, working with
ReadOnlyObservableCollection<T>
is very similar, but read-only in nature).
In many ways, working with
the ObservableCollection<T>
is identical to working with List<T>
, given that both of these classes
implement the same core interfaces. What makes the ObservableCollection<T>
class unique is that this
class supports an event named CollectionChanged
. This event will fire whenever a new item is inserted, a current item is removed (or relocated), or if the entire collection is modified.
Like any event, CollectionChanged is defined in terms of a delegate, which in this case is
NotifyCollectionChangedEventHandler
. This delegate can call any method that takes an object as the first parameter, and a NotifyCollectionChangedEventArgs
as the second. Consider the following Main()
method, which populates an observable collection containing Person objects and wires up the
CollectionChanged
event:
class Program
{
static void Main(string[] args)
{
// Make a collection to observe and add a few Person objects.
ObservableCollection<Person> people = new ObservableCollection<Person>()
{
new Person{ FirstName = "Peter", LastName = "Murphy", Age = 52 },
new Person{ FirstName = "Kevin", LastName = "Key", Age = 48 },
};
// Wire up the CollectionChanged event.
people.CollectionChanged += people_CollectionChanged;
// Now add a new item.
people.Add(new Person("Fred", "Smith", 32));
// Remove an item.
people.RemoveAt(0);
Console.ReadLine();
}
static void people_CollectionChanged(object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e)
{
// What was the action that caused the event?
Console.WriteLine("Action for this event: {0}", e.Action);
// They removed something.
if (e.Action == System.Collections.Specialized.NotifyCollectionChangedAction.Remove)
{
Console.WriteLine("Here are the OLD items:");
foreach (Person p in e.OldItems)
{
Console.WriteLine(p.ToString());
}
Console.WriteLine();
}
// They added something.
if (e.Action == System.Collections.Specialized.NotifyCollectionChangedAction.Add)
{
// Now show the NEW items that were inserted.
Console.WriteLine("Here are the NEW items:");
foreach (Person p in e.NewItems)
{
Console.WriteLine(p.ToString());
}
}
}
}
The incoming NotifyCollectionChangedEventArgs
parameter defines two important properties,
OldItems
and NewItems
, which will give you a list of items that were currently in the collection before the event fired, and the new items that were involved in the change. However, you will want to examine these lists only under the correct circumstances. Recall that the CollectionChanged event can fire when
items are added, removed, relocated, or reset. To discover which of these actions triggered the event,
you can use the Action property of NotifyCollectionChangedEventArgs. The Action property can be
tested against any of the following members of the NotifyCollectionChangedAction
enumeration:
public enum NotifyCollectionChangedAction
{
Add = 0,
Remove = 1,
Replace = 2,
Move = 3,
Reset = 4,
}
If you want to change from current working directory to another directory then in the command prompt you need to type the name of the drive you need to change to, followed by : symbol. example: assume that you want to change to D-drive and you are in C-drive currently, then type D: and hit Enter.
On the other hand if you wish to change directory within same working directory then use cd(change directory) command followed by directory name. example: assuming you wish to change to new folder then type: cd "new folder" and hit enter.
Tips to use CMD: Windows command line are not case sensitive. When working with a file or directory with a space, surround it in quotes. For example, My Documents would be "My Documents". When a file or directory is deleted in the command line, it is not moved into the Recycle bin. If you need help with any of command type /? after the command. For example, dir /? would give the options available for the dir command.
I am using Angular 5 with Boostrap 4. It works for me in this way.
$(document).on('click', '.navbar-nav>li>a, .navbar-brand, .dropdown-menu>a', function (e) {_x000D_
if ( $(e.target).is('a') && $(e.target).attr('class') != 'nav-link dropdown-toggle' ) {_x000D_
$('.navbar-collapse').collapse('hide');_x000D_
}_x000D_
});_x000D_
}
_x000D_
<nav class="navbar navbar-expand-lg navbar-dark bg-primary">_x000D_
<a class="navbar-brand" [routerLink]="['/home']">FbShareTool</a>_x000D_
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarColor01" aria-controls="navbarColor01" aria-expanded="false" aria-label="Toggle navigation" style="">_x000D_
<span class="navbar-toggler-icon"></span>_x000D_
</button>_x000D_
_x000D_
<div class="collapse navbar-collapse" id="navbarColor01">_x000D_
<ul class="navbar-nav mr-auto">_x000D_
<li class="nav-item active" *ngIf="_myAuthService.isAuthenticated()">_x000D_
<a class="nav-link" [routerLink]="['/dashboard']">Dashboard <span class="sr-only">(current)</span></a>_x000D_
</li>_x000D_
<li class="nav-item dropdown" *ngIf="_myAuthService.isAuthenticated()">_x000D_
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">_x000D_
Manage_x000D_
</a>_x000D_
<div class="dropdown-menu" aria-labelledby="navbarDropdown">_x000D_
<a class="dropdown-item" [routerLink]="['/fbgroup']">Facebook Group</a>_x000D_
<div class="dropdown-divider"></div>_x000D_
<a class="dropdown-item" href="#">Fetch Data</a>_x000D_
</div>_x000D_
</li>_x000D_
</ul>_x000D_
_x000D_
<ul class="navbar-nav navbar-right navbar-right-link">_x000D_
<li class="nav-item" *ngIf="!_myAuthService.isAuthenticated()" >_x000D_
<a class="nav-link" (click)="logIn()">Login</a>_x000D_
</li>_x000D_
<li class="nav-item" *ngIf="_myAuthService.isAuthenticated()">_x000D_
<a class="nav-link">{{ _myAuthService.userDetails.displayName }}</a>_x000D_
</li>_x000D_
<li class="nav-item" *ngIf="_myAuthService.isAuthenticated() && _myAuthService.userDetails.photoURL">_x000D_
<a>_x000D_
<img [src]="_myAuthService.userDetails.photoURL" alt="profile-photo" class="img-fluid rounded" width="40px;">_x000D_
</a>_x000D_
</li>_x000D_
<li class="nav-item" *ngIf="_myAuthService.isAuthenticated()">_x000D_
<a class="nav-link" (click)="logOut()">Logout</a>_x000D_
</li>_x000D_
</ul>_x000D_
_x000D_
</div>_x000D_
</nav>
_x000D_
What you are trying to do is get NTLM to forward the identity on to the next server, which it cannot do - it can only do impersonation which only gives you access to local resources. It won't let you cross a machine boundary. Kerberos authentication supports delegation (what you need) by using tickets, and the ticket can be forwarded on when all servers and applications in the chain are correctly configured and Kerberos is set up correctly on the domain. So, in short you need to switch from using NTLM to Kerberos.
For more on Windows Authentication options available to you and how they work start at: http://msdn.microsoft.com/en-us/library/ff647076.aspx
Well you can convert one byte (unsigned char) at a time into a array like so
char buffer [17];
buffer[16] = 0;
for(j = 0; j < 8; j++)
sprintf(&buffer[2*j], "%02X", data[j]);
I believe this is what you were looking for:
class Expression {
protected $expression;
protected $result;
public function __construct($expression) {
$this->expression = $expression;
}
public function evaluate() {
$this->result = eval("return ".$this->expression.";");
return $this;
}
public function getResult() {
return $this->result;
}
}
class NegativeFinder {
protected $expressionObj;
public function __construct(Expression $expressionObj) {
$this->expressionObj = $expressionObj;
}
public function isItNegative() {
$result = $this->expressionObj->evaluate()->getResult();
if($this->hasMinusSign($result)) {
return true;
} else {
return false;
}
}
protected function hasMinusSign($value) {
return (substr(strval($value), 0, 1) == "-");
}
}
Usage:
$soldPrice = 1;
$boughtPrice = 2;
$negativeFinderObj = new NegativeFinder(new Expression("$soldPrice - $boughtPrice"));
echo ($negativeFinderObj->isItNegative()) ? "It is negative!" : "It is not negative :(";
Do however note that eval is a dangerous function, therefore use it only if you really, really need to find out if a number is negative.
:-)
echo -e "\033[31m Hello World"
The [31m
controls the text color:
30
-37
sets foreground color40
-47
sets background colorA more complete list of color codes can be found here.
It is good practice to reset the text color back to \033[0m
at the end of the string.
On the other thread C# naming convention for enum and matching property someone pointed out what I think is a very good idea:
"I know my suggestion goes against the .NET Naming conventions, but I personally prefix enums with 'E' and enum flags with 'F' (similar to how we prefix Interfaces with 'I')."
This helped me at the end:
Quick guide:
Download Google USB Driver
Connect your device with Android Debugging enabled to your PC
Open Device Manager of Windows from System Properties.
Your device should appear under Other devices
listed as something like
Android ADB Interface
or 'Android Phone' or similar. Right-click that and
click on Update Driver Software...
Select Browse my computer for driver software
Select Let me pick from a list of device drivers on my computer
Double-click Show all devices
Press the Have disk
button
Browse and navigate to [wherever your SDK has been installed]\google-usb_driver and select android_winusb.inf
Select Android ADB Interface
from the list of device types.
Press the Yes
button
Press the Install
button
Press the Close
button
Now you've got the ADB driver set up correctly. Reconnect your device if it doesn't recognize it already.
Maybe you're not using the latest version of a JSON for Java Library.
json-simple
has not been updated for a long time, while JSON-Java
was updated 2 month ago.
JSON-Java
can be found on GitHub, here is the link to its repo: https://github.com/douglascrockford/JSON-java
After switching the library, you can refer to my sample code down below:
public static void main(String[] args) {
String JSON = "{\"LanguageLevels\":{\"1\":\"Pocz\\u0105tkuj\\u0105cy\",\"2\":\"\\u015arednioZaawansowany\",\"3\":\"Zaawansowany\",\"4\":\"Ekspert\"}}\n";
JSONObject jsonObject = new JSONObject(JSON);
JSONObject getSth = jsonObject.getJSONObject("LanguageLevels");
Object level = getSth.get("2");
System.out.println(level);
}
And as JSON-Java
open-sourced, you can read the code and its document, they will guide you through.
Hope that it helps.
You can keep <button type="submit">
, but must remove the attribute action=""
of <form>
.
Try to play with
setMinSize()
setMaxSize()
setPreferredSize()
These method are used by layout when it decide what should be the size of current element. The layout manager calls setSize() and actually overrides your values.
Static memory allocation. Memory allocated will be in stack.
int a[10];
Dynamic memory allocation. Memory allocated will be in heap.
int *a = malloc(sizeof(int) * 10);
and the latter should be freed since there is no Garbage Collector(GC) in C.
free(a);
Use Java8 built in fuction 'computeIfPresent'
Example:
public class ExampleToUpdateMapValue {
public static void main(String[] args) {
Map<String,String> bookAuthors = new TreeMap<>();
bookAuthors.put("Genesis","Moses");
bookAuthors.put("Joshua","Joshua");
bookAuthors.put("Judges","Samuel");
System.out.println("---------------------Before----------------------");
bookAuthors.entrySet().stream().forEach(System.out::println);
// To update the existing value using Java 8
bookAuthors.computeIfPresent("Judges", (k,v) -> v = "Samuel/Nathan/Gad");
System.out.println("---------------------After----------------------");
bookAuthors.entrySet().stream().forEach(System.out::println);
}
}
<div class='navbar' data-spy="affix" data-offset-top="0">
If your navbar is on the top of the page originally, set the value to 0. Otherwise, set the value for data-offset-top
to the value of the content above your navbar.
Meanwhile, you need to modify the css
as such:
.affix{
width:100%;
top:0;
z-index: 10;
}
This error occurs when you compile a java program using classes that support the Servlet API. The compiler searches for the library (included in a .jar file) by using the CLASSPATH. You can specify this when you compile using -classpath
or -cp
options as noted in other responses, but you should set up your environment to define the classpath as needed.
Set the CLASSPATH environment variable to reference the location of servlet-api.jar
, which depends on your setup (OS, how you installed, etc.)
Assuming you're using Tomcat and have installed it in one of 20 possible ways, the APIs used by servlets will be installed on your system, relative to wherever Tomcat is installed. For historical reasons, Tomcat is also known as "Catalina", so you can use the command "catalina" to run certain commands, and alone, it will report, amongst other things the CATALINA_BASE
. For example on my Mac using Tomcat installed using homebrew it's
Using CATALINA_BASE: /usr/local/Cellar/tomcat/8.5.9/libexec
The location of the Tomcat servlet libraries is under this in the lib
directory.
Set CATALINA_BASE, then set CLASSPATH using the base as a start, for example for Linux or OSX you might set this in .profile
, or .bash_profile
like so:
export CATALINA_BASE=/usr/local/Cellar/tomcat/8.5.9/libexec
export CLASSPATH=$CATALINA_BASE/lib/servlet-api.jar:$CLASSPATH
Exit the terminal/shell and come back in to run the profile. You should be able to see that the variable is set by using the echo
command, e.g.
echo $CLASSPATH
or in Windows
echo %CLASSPATH%
If it displays the full path to the jar `javac WebTest.java' compile your class.
Other answers are correct -- set up your IDE (Eclipse, IntelliJ) to know about Tomcat or build with Maven and you'll save pain.
First of all this code snippet
char *addr=NULL;
strcpy(addr,retstring().c_str());
is invalid because you did not allocate memory where you are going to copy retstring().c_str().
As for the error message then it is clear enough. The type of expression data.str().c_str() is const char * but the third parameter of the function is declared as char *. You may not assign an object of type const char * to an object of type char *. Either the function should define the third parameter as const char * if it does not change the object pointed by the third parameter or you may not pass argument of type const char *.
by this function:
ALTER FUNCTION [dbo].[isnull](@input nvarchar(50),@ret int = 0)
RETURNS int
AS
BEGIN
return (case when @input='' then @ret when @input is null then @ret else @input end)
END
and use this:
dbo.isnull(value,0)
For Google travelers: this stupidly unhelpful error message is also presented when you make a type and double up the +
regex operator:
Okay:
\w+
Not okay:
\w++
This is an addendum to the accepted answer by AndreyT, with Nyan's comment on mismatched array sizes. I disagree with their automatic setting of the fifth element to zero. It should likely be 5 --the number after 1,2,3,4. So I would suggest a wrapper to memcpy() to produce a compile-time error when we try to copy arrays of different sizes:
#define Memcpy(a,b) do { /* copy arrays */ \
ASSERT(sizeof(a) == sizeof(b) && /* a static assert */ \
sizeof(a) != sizeof((a) + 0)); /* no pointers */ \
memcpy((a), (b), sizeof (b)); /* & unnecesary */ \
} while (0) /* no return value */
This macro will generate a compile-time error if your array is of length 1. Which is perhaps a feature.
Because we are using a macro, the C99 compound literal seems to need an extra pair of parentheses:
Memcpy(myarray, ((int[]) { 1, 2, 3, 4 }));
Here ASSERT() is a 'static assert'. If you don't already have your own, I use the following on a number of platforms:
#define CONCAT_TOKENS(a, b) a ## b
#define EXPAND_THEN_CONCAT(a,b) CONCAT_TOKENS(a, b)
#define ASSERT(e) enum {EXPAND_THEN_CONCAT(ASSERT_line_,__LINE__) = 1/!!(e)}
#define ASSERTM(e,m) /* version of ASSERT() with message */ \
enum{EXPAND_THEN_CONCAT(m##_ASSERT_line_,__LINE__)=1/!!(e)}
I have shamelessly pulled some pretty big datasets in memory, and altough it did get sluggish it took maybe 15 Mo of data upwards with pretty intense calculations on the dataset. I doubt you will run into problems with memory unless you have intense calculations on the data and many many rows. Profiling and benchmarking with different mock resultsets will be your best bet to evaluate performance.
Use preventDefault()
to stop the event of submit button and in ajax call success submit the form using submit()
:
$('#btnSave').click(function (e) {
e.preventDefault(); // <------------------ stop default behaviour of button
var element = this;
$.ajax({
url: "/Home/SaveDetailedInfo",
type: "POST",
data: JSON.stringify({ 'Options': someData}),
dataType: "json",
traditional: true,
contentType: "application/json; charset=utf-8",
success: function (data) {
if (data.status == "Success") {
alert("Done");
$(element).closest("form").submit(); //<------------ submit form
} else {
alert("Error occurs on the Database level!");
}
},
error: function () {
alert("An error has occured!!!");
}
});
});
Here are the different ways in which you can create an array of booleans in typescript:
let arr1: boolean[] = [];
let arr2: boolean[] = new Array();
let arr3: boolean[] = Array();
let arr4: Array<boolean> = [];
let arr5: Array<boolean> = new Array();
let arr6: Array<boolean> = Array();
let arr7 = [] as boolean[];
let arr8 = new Array() as Array<boolean>;
let arr9 = Array() as boolean[];
let arr10 = <boolean[]> [];
let arr11 = <Array<boolean>> new Array();
let arr12 = <boolean[]> Array();
let arr13 = new Array<boolean>();
let arr14 = Array<boolean>();
You can access them using the index:
console.log(arr[5]);
and you add elements using push:
arr.push(true);
When creating the array you can supply the initial values:
let arr1: boolean[] = [true, false];
let arr2: boolean[] = new Array(true, false);
You can read database value in to a variable and then set the variable as follows
$app_container->assign('checked_flag', $db_data=='0' ? '' : 'checked');
And in html you can just use the checked_flag variable as follows
<input type="checkbox" id="chk_test" name="chk_test" value="1" {checked_flag}>
You could use the substr
function to return a substring starting from the 5th character:
$str = "The quick brown fox jumps over the lazy dog."
$str2 = substr($str, 4); // "quick brown fox jumps over the lazy dog."
Also, using the awesome font, you can use the following tag. Simple and beautiful
With the possibility of changing the size and color and other features in CSS
See result here
You can also create a small VBScript script:
Set env = CreateObject("WScript.Shell").Environment("System")
If env(WScript.Arguments(0)) <> vbNullString Then env.Remove WScript.Arguments(0)
Then call it like %windir%\System32\cscript.exe //Nologo "script_name.vbs" FOOBAR
.
The disadvantage is you need an extra script, but it does not require a reboot.
You can also try Notification API. Here's an example:
function message(msg){
if (window.webkitNotifications) {
if (window.webkitNotifications.checkPermission() == 0) {
notification = window.webkitNotifications.createNotification(
'picture.png', 'Title', msg);
notification.onshow = function() { // when message shows up
setTimeout(function() {
notification.close();
}, 1000); // close message after one second...
};
notification.show();
} else {
window.webkitNotifications.requestPermission(); // ask for permissions
}
}
else {
alert(msg);// fallback for people who does not have notification API; show alert box instead
}
}
To use this, simply write:
message("hello");
Instead of:
alert("hello");
Note: Keep in mind that it's only currently supported in Chrome, Safari, Firefox and some mobile web browsers (jan. 2014)
Find supported browsers here.
Adding to the above. You use the Dispatch timer if you want the tick events marshalled back to the UI thread. Otherwise I would use System.Timers.Timer.
You may use a controller in directive:
angular.module('app', [])
.directive('appClick', function(){
return {
restrict: 'A',
scope: true,
template: '<button ng-click="click()">Click me</button> Clicked {{clicked}} times',
controller: function($scope, $element){
$scope.clicked = 0;
$scope.click = function(){
$scope.clicked++
}
}
}
});
More about directives in Angular guide. And very helpfull for me was videos from official Angular blog post About those directives.
If you are writing portable code, the answer is "you can't tell", the good news is that you don't need to. Your protocol should involve writing the size as (eg) "8 octets, big-endian format" (Ideally with a check that the actual size fits in 8 octets.)
Out-File
defaults to unicode encoding which is why you are seeing the behavior you are. Use -Encoding Ascii
to change this behavior. In your case
Out-File -Encoding Ascii -append textfile.txt.
Add-Content
uses Ascii and also appends by default.
"This is a test" | Add-Content textfile.txt.
As for the lack of newline: You did not send a newline so it will not write one to file.
In base R a formula interface with interactions (:
) can be used to achieve this.
df <- read.csv("~/Desktop/TestData.csv")
df <- data.frame(stack(df[,-1]), Label=df$Label) # reshape to long format
boxplot(values ~ Label:ind, data=df, col=c("red", "limegreen"), las=2)
My problem case was to run portecle.jnlp file locally using Java8.
What worked for me was
On step 3, you might try also to add file:///c:/path/portecle.jnlp, but this addition didn't help with my case.
often this is due to missing permissions. The windows account the local IIS Application Pool is running with may not have the permission to write to the applications directory. You could create a directory somewhere, give everyone permission to write in it and point your log4net config to that directory. If then a log file is created there, you can modify the permissions for your desired log directory so that the app pool can write to it.
Another reason could be an uninitialized log4net. In a winforms app, you usually configure log4net upon application start. In a web app, you can do this either dynamically (in your logging component, check if you can create a specific Ilog logger using its name, if not -> call configure()) or again upon application start in global.asax.cs.
This is mentioned in the Missing Data section of the docs:
NA groups in GroupBy are automatically excluded. This behavior is consistent with R
One workaround is to use a placeholder before doing the groupby (e.g. -1):
In [11]: df.fillna(-1)
Out[11]:
a b
0 1 4
1 2 -1
2 3 6
In [12]: df.fillna(-1).groupby('b').sum()
Out[12]:
a
b
-1 2
4 1
6 3
That said, this feels pretty awful hack... perhaps there should be an option to include NaN in groupby (see this github issue - which uses the same placeholder hack).
However, as described in another answer, "from pandas 1.1 you have better control over this behavior, NA values are now allowed in the grouper using dropna=False"
If your targetSdkVersion >= 24
, then we have to use FileProvider
class to give access to the particular file or folder to make them accessible for other apps. We create our own class inheriting FileProvider
in order to make sure our FileProvider doesn't conflict with FileProviders declared in imported dependencies as described here.
Steps to replace file://
URI with content://
URI:
<provider>
tag in AndroidManifest.xml
under <application>
tag. Specify a unique authority for the android:authorities
attribute to avoid conflicts, imported dependencies might specify ${applicationId}.provider
and other commonly used authorities.<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
...
<application
...
<provider
android:name="androidx.core.content.FileProvider"
android:authorities="${applicationId}.provider"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/provider_paths" />
</provider>
</application>
</manifest>
provider_paths.xml
file in res/xml
folder. A folder may be needed to be created if it doesn't exist yet. The content of the file is shown below. It describes that we would like to share access to the External Storage at root folder (path=".")
with the name external_files.<?xml version="1.0" encoding="utf-8"?>
<paths>
<external-path name="external_files" path="."/>
</paths>
The final step is to change the line of code below in
Uri photoURI = Uri.fromFile(createImageFile());
to
Uri photoURI = FileProvider.getUriForFile(context, context.getApplicationContext().getPackageName() + ".provider", createImageFile());
Edit: If you're using an intent to make the system open your file, you may need to add the following line of code:
intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
Please refer to the full code and solution that have been explained here.