Adding the following two lines before importing pylab seems to work for me
import matplotlib
matplotlib.use("gtk")
import sys
import pylab
import numpy as np
For MySQL 5.7.6 and later:
ALTER USER 'root'@'localhost' IDENTIFIED BY 'MyNewPass';
For MySQL 5.7.5 and earlier:
SET PASSWORD FOR 'root'@'localhost' = PASSWORD('MyNewPass');
This is what I went through on Amazon/AWS EMR v5. (Adapted from the previous answers), to have Maven and Java8.
sudo wget https://repos.fedorapeople.org/repos/dchen/apache-maven/epel-apache-maven.repo -O /etc/yum.repos.d/epel-apache-maven.repo
sudo sed -i s/\$releasever/6/g /etc/yum.repos.d/epel-apache-maven.repo
sudo yum install -y apache-maven
sudo alternatives --config java
pick Java8
sudo alternatives --config javac
pick Java8
Now, if you run:
mvn -version
You should get:
Apache Maven 3.5.2 (138edd61fd100ec658bfa2d307c43b76940a5d7d; 2017-10-18T07:58:13Z)
Maven home: /usr/share/apache-maven
Java version: 1.8.0_171, vendor: Oracle Corporation
Java home: /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.171-8.b10.38.amzn1.x86_64/jre
Default locale: en_US, platform encoding: UTF-8
OS name: "linux", version: "4.14.47-56.37.amzn1.x86_64", arch: "amd64", family: “unix"
If you know that your dataframe has only one column, you can use:
names(trSamp) <- "newname2"
your question doesn't sound as if you even tried it yourself, so i shouldn't even think of answering, but: if a hidden div can't be printed with that one line:
$('SelectorToPrint').printElement();
simply change it to:
$('SelectorToPrint').show().printElement();
which should make it work in all cases.
for the rest, there's no solution. the plugin will open the print-dialog for you where the user has to choose his printer. you simply can't find out if a printer is attached with javascript (and you (almost) can't print without print-dialog - if you're thinking about that).
NOTE:
The
$.browser
object has been removed in version 1.9.x of jQuery making this library unsupported.
At the first site is a dropdown field to select the language of phpmyadmin.
In the config.inc.php you can set:
$cfg['Lang'] = '';
More details you can find in the documentation: http://www.phpmyadmin.net/documentation/
The provided examples, using csv
modules, are great! Besides, you can always simply write to a text file using formatted strings, like the following tentative example:
l = [[1, 2], [2, 3], [4, 5]]
out = open('out.csv', 'w')
for row in l:
for column in row:
out.write('%d;' % column)
out.write('\n')
out.close()
I used ;
as separator, because it works best with Excell (one of your requirements).
Hope it helps!
If you couldn't find the build.xml file in your project then you have to build it to be able to debug it and get your .apk
you can use this command-line to build:
android update project -p "project full path"
where "Project full path" -- Give your full path of your project location
after this you will find the build.xml then you can debug it.
After editing .gitignore
to match the ignored files, you can do git ls-files -ci --exclude-standard
to see the files that are included in the exclude lists; you can then do
git ls-files -ci --exclude-standard -z | xargs -0 git rm --cached
git ls-files -ci --exclude-standard | % { git rm --cached "$_" }
for /F "tokens=*" %a in ('git ls-files -ci --exclude-standard') do @git rm --cached "%a"
to remove them from the repository (without deleting them from disk).
Edit: You can also add this as an alias in your .gitconfig file so you can run it anytime you like. Just add the following line under the [alias] section (modify as needed for Windows or Mac):
apply-gitignore = !git ls-files -ci --exclude-standard -z | xargs -0 git rm --cached
(The -r
flag in xargs
prevents git rm
from running on an empty result and printing out its usage message, but may only be supported by GNU findutils. Other versions of xargs
may or may not have a similar option.)
Now you can just type git apply-gitignore
in your repo, and it'll do the work for you!
No hack or js needed. Just apply the following rule to your root element:
min-height: 100%;
height: auto;
It will automatically choose the bigger one from the two as its height, which means if the content is longer than the browser, it will be the height of the content, otherwise, the height of the browser. This is standard css.
instanceof is a keyword that can be used to test if an object is of a specified type.
Example :
public class MainClass {
public static void main(String[] a) {
String s = "Hello";
int i = 0;
String g;
if (s instanceof java.lang.String) {
// This is going to be printed
System.out.println("s is a String");
}
if (i instanceof Integer) {
// This is going to be printed as autoboxing will happen (int -> Integer)
System.out.println("i is an Integer");
}
if (g instanceof java.lang.String) {
// This case is not going to happen because g is not initialized and
// therefore is null and instanceof returns false for null.
System.out.println("g is a String");
}
}
Here is my source.
suptitle
seems the way to go, but for what it's worth, the figure
has a transFigure
property that you can use:
fig=figure(1)
text(0.5, 0.95, 'test', transform=fig.transFigure, horizontalalignment='center')
Just set the property directly: .
eleman.disabled = false;
php.js ( http://www.phpjs.org/ ) has a isset()
function: http://phpjs.org/functions/isset:454
You have to cd to your master directory and then rails s command will work without problems.
But do not forget bundle-install command when you didn't do it before.
You need to change source to viewmodel object:
myBinding.Source = viewModelObject;
This is an old question, but you can now write using statements without needing to block each one. They will be disposed of in reverse order when the containing block is finished.
using var responseStream = response.GetResponseStream();
using var reader = new StreamReader(responseStream);
using var writer = new StreamWriter(filename);
int chunkSize = 1024;
while (!reader.EndOfStream)
{
char[] buffer = new char[chunkSize];
int count = reader.Read(buffer, 0, chunkSize);
if (count != 0)
{
writer.Write(buffer, 0, count);
}
}
https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/proposals/csharp-8.0/using
The term ‘fixed point’ refers to the corresponding manner in which numbers are represented, with a fixed number of digits after, and sometimes before, the decimal point. With floating-point representation, the placement of the decimal point can ‘float’ relative to the significant digits of the number. For example, a fixed-point representation with a uniform decimal point placement convention can represent the numbers 123.45, 1234.56, 12345.67, etc, whereas a floating-point representation could in addition represent 1.234567, 123456.7, 0.00001234567, 1234567000000000, etc.
The other answers should probably do the trick, but this one is simpler and does not require jQuery:
document.head.querySelector("[property~=video][content]").content;
The original question used an RDFa tag with a property=""
attribute. For the normal HTML <meta name="" …>
tags you could use something like:
document.querySelector('meta[name="description"]').content
Here is a batch file that generates all 10.x.x.x addresses
@echo off
SET /A X=0
SET /A Y=0
SET /A Z=0
:loop
SET /A X+=1
echo 10.%X%.%Y%.%Z%
IF "%X%" == "256" (
GOTO end
) ELSE (
GOTO loop2
GOTO loop
)
:loop2
SET /A Y+=1
echo 10.%X%.%Y%.%Z%
IF "%Y%" == "256" (
SET /A Y=0
GOTO loop
) ELSE (
GOTO loop3
GOTO loop2
)
:loop3
SET /A Z+=1
echo 10.%X%.%Y%.%Z%
IF "%Z%" == "255" (
SET /A Z=0
GOTO loop2
) ELSE (
GOTO loop3
)
:end
The question doesn't specify a shell, so for those using fish (friendly interactive shell):
if command -v foo > /dev/null
echo exists
else
echo does not exist
end
For basic POSIX compatibility, we use the -v
flag which is an alias for --search
or -s
.
The list()
function [docs] will convert a string into a list of single-character strings.
>>> list('hello')
['h', 'e', 'l', 'l', 'o']
Even without converting them to lists, strings already behave like lists in several ways. For example, you can access individual characters (as single-character strings) using brackets:
>>> s = "hello"
>>> s[1]
'e'
>>> s[4]
'o'
You can also loop over the characters in the string as you can loop over the elements of a list:
>>> for c in 'hello':
... print c + c,
...
hh ee ll ll oo
There are two different ways to clear the terminal in BlueJ. You can get BlueJ to automatically clear the terminal before every interactive method call. To do this, activate the 'Clear screen at method call' option in the 'Options' menu of the terminal. You can also clear the terminal programmatically from within your program. Printing a formfeed character (Unicode 000C) clears the BlueJ terminal, for example:
System.out.print('\u000C');
In Chrome, in the Developer Tools, under Network, in the Name column, right-click and select "Save as HAR with content". Then open a new tab, go to https://toolbox.googleapps.com/apps/har_analyzer/ and open the saved HAR file.
With my first view being MenuViewController
I added:
MenuViewController *menuViewController = [[MenuViewController alloc]init];
self.window.rootViewController = menuViewController;
on the App Delegate method:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
}
That worked.
$.ajax({
url: 'http://url.of.my.server/submit',
dataType: "jsonp",
jsonp: 'callback',
jsonpCallback: 'jsonp_callback'
});
jsonp is the querystring parameter name that is defined to be acceptable by the server while the jsonpCallback is the javascript function name to be executed at the client.
When you use such url:
url: 'http://url.of.my.server/submit?callback=?'
the question mark ? at the end instructs jQuery to generate a random function while the predfined behavior of the autogenerated function will just invoke the callback -the sucess function in this case- passing the json data as a parameter.
$.ajax({
url: 'http://url.of.my.server/submit?callback=?',
success: function (data, status) {
mySurvey.closePopup();
},
error: function (xOptions, textStatus) {
mySurvey.closePopup();
}
});
The same goes here if you are using $.getJSON with ? placeholder it will generate a random function while the predfined behavior of the autogenerated function will just invoke the callback:
$.getJSON('http://url.of.my.server/submit?callback=?',function(data){
//process data here
});
Hmm, looks ugly, seems to work.
static class Async
{
public static Task<IDisposable> Lock(object obj)
{
return TaskEx.Run(() =>
{
var resetEvent = ResetEventFor(obj);
resetEvent.WaitOne();
resetEvent.Reset();
return new ExitDisposable(obj) as IDisposable;
});
}
private static readonly IDictionary<object, WeakReference> ResetEventMap =
new Dictionary<object, WeakReference>();
private static ManualResetEvent ResetEventFor(object @lock)
{
if (!ResetEventMap.ContainsKey(@lock) ||
!ResetEventMap[@lock].IsAlive)
{
ResetEventMap[@lock] =
new WeakReference(new ManualResetEvent(true));
}
return ResetEventMap[@lock].Target as ManualResetEvent;
}
private static void CleanUp()
{
ResetEventMap.Where(kv => !kv.Value.IsAlive)
.ToList()
.ForEach(kv => ResetEventMap.Remove(kv));
}
private class ExitDisposable : IDisposable
{
private readonly object _lock;
public ExitDisposable(object @lock)
{
_lock = @lock;
}
public void Dispose()
{
ResetEventFor(_lock).Set();
}
~ExitDisposable()
{
CleanUp();
}
}
}
Replace 1.0_A0 with ${project.version}
Run mvn once. This will download all the required repositories. You may switch back to 1.0_A0 after this step.
module.exports = { ClientIDUnsplash : 'SuperSecretKey' };
var { ClientIDUnsplash } = require('./FileOne');
This example works best for React.
First, factor consists of indices and levels. This fact is very very important when you are struggling with factor.
For example,
> z <- factor(letters[c(3, 2, 3, 4)])
# human-friendly display, but internal structure is invisible
> z
[1] c b c d
Levels: b c d
# internal structure of factor
> unclass(z)
[1] 2 1 2 3
attr(,"levels")
[1] "b" "c" "d"
here, z
has 4 elements.
The index is 2, 1, 2, 3
in that order.
The level is associated with each index: 1 -> b, 2 -> c, 3 -> d.
Then, as.numeric
converts simply the index part of factor into numeric.
as.character
handles the index and levels, and generates character vector expressed by its level.
?as.numeric
says that Factors are handled by the default method.
For the Mac users.
For selecting all of the code in the document => cmd+A
For formatting selected code => cmd+K, cmd+F
As far as I can tell there is no upper limit in 2008.
In SQL Server 2005 the code in your question fails on the assignment to the @GGMMsg
variable with
Attempting to grow LOB beyond maximum allowed size of 2,147,483,647 bytes.
the code below fails with
REPLICATE: The length of the result exceeds the length limit (2GB) of the target large type.
However it appears these limitations have quietly been lifted. On 2008
DECLARE @y VARCHAR(MAX) = REPLICATE(CAST('X' AS VARCHAR(MAX)),92681);
SET @y = REPLICATE(@y,92681);
SELECT LEN(@y)
Returns
8589767761
I ran this on my 32 bit desktop machine so this 8GB string is way in excess of addressable memory
Running
select internal_objects_alloc_page_count
from sys.dm_db_task_space_usage
WHERE session_id = @@spid
Returned
internal_objects_alloc_page_co
------------------------------
2144456
so I presume this all just gets stored in LOB
pages in tempdb
with no validation on length. The page count growth was all associated with the SET @y = REPLICATE(@y,92681);
statement. The initial variable assignment to @y
and the LEN
calculation did not increase this.
The reason for mentioning this is because the page count is hugely more than I was expecting. Assuming an 8KB page then this works out at 16.36 GB which is obviously more or less double what would seem to be necessary. I speculate that this is likely due to the inefficiency of the string concatenation operation needing to copy the entire huge string and append a chunk on to the end rather than being able to add to the end of the existing string. Unfortunately at the moment the .WRITE
method isn't supported for varchar(max) variables.
Addition
I've also tested the behaviour with concatenating nvarchar(max) + nvarchar(max)
and nvarchar(max) + varchar(max)
. Both of these allow the 2GB limit to be exceeded. Trying to then store the results of this in a table then fails however with the error message Attempting to grow LOB beyond maximum allowed size of 2147483647 bytes.
again. The script for that is below (may take a long time to run).
DECLARE @y1 VARCHAR(MAX) = REPLICATE(CAST('X' AS VARCHAR(MAX)),2147483647);
SET @y1 = @y1 + @y1;
SELECT LEN(@y1), DATALENGTH(@y1) /*4294967294, 4294967292*/
DECLARE @y2 NVARCHAR(MAX) = REPLICATE(CAST('X' AS NVARCHAR(MAX)),1073741823);
SET @y2 = @y2 + @y2;
SELECT LEN(@y2), DATALENGTH(@y2) /*2147483646, 4294967292*/
DECLARE @y3 NVARCHAR(MAX) = @y2 + @y1
SELECT LEN(@y3), DATALENGTH(@y3) /*6442450940, 12884901880*/
/*This attempt fails*/
SELECT @y1 y1, @y2 y2, @y3 y3
INTO Test
A more recent version of the accepted answer.
Brief version:
$('#form').on('submit', function(e, options) {
options = options || {};
if ( !options.lots_of_stuff_done ) {
e.preventDefault();
$.ajax({
/* do lots of stuff */
}).then(function() {
// retrigger the submit event with lots_of_stuff_done set to true
$(e.currentTarget).trigger('submit', { 'lots_of_stuff_done': true });
});
} else {
/* allow default behavior to happen */
}
});
A good use case for something like this is where you may have some legacy form code that works, but you've been asked to enhance the form by adding something like email address validation before submitting the form. Instead of digging through the back-end form post code, you could write an API and then update your front-end code to hit that API first before allowing the form to do it's traditional POST.
To do that, you can implement code similar to what I've written here:
$('#signup_form').on('submit', function(e, options) {
options = options || {};
if ( !options.email_check_complete ) {
e.preventDefault(); // Prevent form from submitting.
$.ajax({
url: '/api/check_email'
type: 'get',
contentType: 'application/json',
data: {
'email_address': $('email').val()
}
})
.then(function() {
// e.type === 'submit', if you want this to be more dynamic
$(e.currentTarget).trigger(e.type, { 'email_check_complete': true });
})
.fail(function() {
alert('Email address is not valid. Please fix and try again.');
})
} else {
/**
Do traditional <form> post.
This code will be hit on the second pass through this handler because
the 'email_check_complete' option was passed in with the event.
*/
$('#notifications').html('Saving your personal settings...').fadeIn();
}
});
As mentioned before, you can do this:
WebView host = (WebView)this.findViewById(R.id.webView);
String url = "<yoururladdress>";
Map <String, String> extraHeaders = new HashMap<String, String>();
extraHeaders.put("Authorization","Bearer");
host.loadUrl(url,extraHeaders);
I tested this and on with a MVC Controller that I extended the Authorize Attribute to inspect the header and the header is there.
Since I can't comment on the top comment, I'm forced to submit an "answer."
The problem with the selected answer is that setting the field to readonly takes the field out of the tab order on the iPhone. So if you like entering forms by hitting "next", you'll skip right over the field.
A little late to the party, but this is how I did it for an insert:
DECLARE @ManagerID AS Varchar (25) = 'NA'
DECLARE @ManagerEmail AS Varchar (50) = 'NA'
Declare @RecordCount AS int = 0
SET @ManagerID = ?
SET @ManagerEmail = ?
SET @RecordCount = ?
INSERT INTO...
The problem is: adb
is not in your PATH
. This is where the shell looks for executables. You can check your current PATH
with echo $PATH
.
Bash will first try to look for a binary called adb
in your Path, and not in the current directory. Therefore, if you are currently in the platform-tools
directory, just call
./adb --help
The dot is your current directory, and this tells Bash to use adb
from there.
But actually, you should add platform-tools
to your PATH
, as well as some other tools that the Android SDK comes with. This is how you do it:
Find out where you installed the Android SDK. This might be (where $HOME
is your user's home directory) one of the following (or verify via Configure > SDK Manager in the Android Studio startup screen):
$HOME/Android/Sdk
$HOME/Library/Android/sdk
Find out which shell profile to edit, depending on which file is used:
$HOME/.bashrc
$HOME/.bash_profile
$HOME/.zshrc
Open the shell profile from step two, and at the bottom of the file, add the following lines. Make sure to replace the path with the one where you installed platform-tools
if it differs:
export ANDROID_HOME="$HOME/Android/Sdk"
export PATH="$ANDROID_HOME/tools:$ANDROID_HOME/tools/bin:$ANDROID_HOME/platform-tools:$PATH"
Save the profile file, then, re-start the terminal or run source ~/.bashrc
(or whatever you just modified).
Note that setting ANDROID_HOME
is required for some third party frameworks, so it does not hurt to add it.
I use 'setAttribute' function:
<input type="text" id="example"> // Setup text field
<script type="text/javascript">
document.getElementById("example").setAttribute('value','My default value');
</script>
There is an alternative command where you can get the raw value of a cell where formula is put on. It's returns type is String. Use:
cell.getRawValue();
This is known as varargs see the link here for more details
In past java releases, a method that took an arbitrary number of values required you to create an array and put the values into the array prior to invoking the method. For example, here is how one used the MessageFormat class to format a message:
Object[] arguments = {
new Integer(7),
new Date(),
"a disturbance in the Force"
};
String result = MessageFormat.format(
"At {1,time} on {1,date}, there was {2} on planet "
+ "{0,number,integer}.", arguments);
It is still true that multiple arguments must be passed in an array, but the varargs feature automates and hides the process. Furthermore, it is upward compatible with preexisting APIs. So, for example, the MessageFormat.format method now has this declaration:
public static String format(String pattern,
Object... arguments);
If you can create a string xml you can easily transform it to the xml document object e.g. -
String xmlString = "<?xml version=\"1.0\" encoding=\"utf-8\"?><a><b></b><c></c></a>";
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder;
try {
builder = factory.newDocumentBuilder();
Document document = builder.parse(new InputSource(new StringReader(xmlString)));
} catch (Exception e) {
e.printStackTrace();
}
You can use the document object and xml parsing libraries or xpath to get back the ip address.
if you need to change your column output date format just use to_char this well get you a string, not a date.
In order to compare two databases, I've written the procedures bellow. If you want to compare two tables you can use procedure 'CompareTables'. Example :
EXEC master.dbo.CompareTables 'DB1', 'dbo', 'table1', 'DB2', 'dbo', 'table2'
If you want to compare two databases, use the procedure 'CompareDatabases'. Example :
EXEC master.dbo.CompareDatabases 'DB1', 'DB2'
Note : - I tried to make the procedures secure, but anyway, those procedures are only for testing and debugging. - If you want a complete solution for comparison use third party like (Visual Studio, ...)
USE [master]
GO
create proc [dbo].[CompareDatabases]
@FirstDatabaseName nvarchar(50),
@SecondDatabaseName nvarchar(50)
as
begin
-- Check that databases exist
if not exists(SELECT name FROM sys.databases WHERE name=@FirstDatabaseName)
return 0
if not exists(SELECT name FROM sys.databases WHERE name=@SecondDatabaseName)
return 0
declare @result table (TABLE_NAME nvarchar(256))
SET NOCOUNT ON
insert into @result EXEC('(Select distinct TABLE_NAME from ' + @FirstDatabaseName + '.INFORMATION_SCHEMA.COLUMNS '
+'Where TABLE_SCHEMA=''dbo'')'
+ 'intersect'
+ '(Select distinct TABLE_NAME from ' + @SecondDatabaseName + '.INFORMATION_SCHEMA.COLUMNS '
+'Where TABLE_SCHEMA=''dbo'')')
DECLARE @TABLE_NAME nvarchar(256)
DECLARE curseur CURSOR FOR
SELECT TABLE_NAME FROM @result
OPEN curseur
FETCH curseur INTO @TABLE_NAME
WHILE @@FETCH_STATUS = 0
BEGIN
print 'TABLE : ' + @TABLE_NAME
EXEC master.dbo.CompareTables @FirstDatabaseName, 'dbo', @TABLE_NAME, @SecondDatabaseName, 'dbo', @TABLE_NAME
FETCH curseur INTO @TABLE_NAME
END
CLOSE curseur
DEALLOCATE curseur
SET NOCOUNT OFF
end
GO
.
USE [master]
GO
CREATE PROC [dbo].[CompareTables]
@FirstTABLE_CATALOG nvarchar(256),
@FirstTABLE_SCHEMA nvarchar(256),
@FirstTABLE_NAME nvarchar(256),
@SecondTABLE_CATALOG nvarchar(256),
@SecondTABLE_SCHEMA nvarchar(256),
@SecondTABLE_NAME nvarchar(256)
AS
BEGIN
-- Verify if first table exist
DECLARE @table1 nvarchar(256) = @FirstTABLE_CATALOG + '.' + @FirstTABLE_SCHEMA + '.' + @FirstTABLE_NAME
DECLARE @return_status int
EXEC @return_status = master.dbo.TableExist @FirstTABLE_CATALOG, @FirstTABLE_SCHEMA, @FirstTABLE_NAME
IF @return_status = 0
BEGIN
PRINT @table1 + ' : Table Not FOUND'
RETURN 0
END
-- Verify if second table exist
DECLARE @table2 nvarchar(256) = @SecondTABLE_CATALOG + '.' + @SecondTABLE_SCHEMA + '.' + @SecondTABLE_NAME
EXEC @return_status = master.dbo.TableExist @SecondTABLE_CATALOG, @SecondTABLE_SCHEMA, @SecondTABLE_NAME
IF @return_status = 0
BEGIN
PRINT @table2 + ' : Table Not FOUND'
RETURN 0
END
-- Compare the two tables
DECLARE @sql AS NVARCHAR(MAX)
SELECT @sql = '('
+ '(SELECT ''' + @table1 + ''' as _Table, * FROM ' + @FirstTABLE_CATALOG + '.' + @FirstTABLE_SCHEMA + '.' + @FirstTABLE_NAME + ')'
+ 'EXCEPT'
+ '(SELECT ''' + @table1 + ''' as _Table, * FROM ' + @SecondTABLE_CATALOG + '.' + @SecondTABLE_SCHEMA + '.' + @SecondTABLE_NAME + ')'
+ ')'
+ 'UNION'
+ '('
+ '(SELECT ''' + @table2 + ''' as _Table, * FROM ' + @SecondTABLE_CATALOG + '.' + @SecondTABLE_SCHEMA + '.' + @SecondTABLE_NAME + ')'
+ 'EXCEPT'
+ '(SELECT ''' + @table2 + ''' as _Table, * FROM ' + @FirstTABLE_CATALOG + '.' + @FirstTABLE_SCHEMA + '.' + @FirstTABLE_NAME + ')'
+ ')'
DECLARE @wrapper AS NVARCHAR(MAX) = 'if exists (' + @sql + ')' + char(10) + ' (' + @sql + ')ORDER BY 2'
Exec(@wrapper)
END
GO
.
USE [master]
GO
CREATE PROC [dbo].[TableExist]
@TABLE_CATALOG nvarchar(256),
@TABLE_SCHEMA nvarchar(256),
@TABLE_NAME nvarchar(256)
AS
BEGIN
IF NOT EXISTS(SELECT name FROM sys.databases WHERE name=@TABLE_CATALOG)
RETURN 0
declare @result table (TABLE_SCHEMA nvarchar(256), TABLE_NAME nvarchar(256))
SET NOCOUNT ON
insert into @result EXEC('Select TABLE_SCHEMA, TABLE_NAME from ' + @TABLE_CATALOG + '.INFORMATION_SCHEMA.COLUMNS')
SET NOCOUNT OFF
IF EXISTS(SELECT TABLE_SCHEMA, TABLE_NAME FROM @result
WHERE TABLE_SCHEMA=@TABLE_SCHEMA AND TABLE_NAME=@TABLE_NAME)
RETURN 1
RETURN 0
END
GO
useTimezone is an older workaround. MySQL team rewrote the setTimestamp/getTimestamp code fairly recently, but it will only be enabled if you set the connection parameter useLegacyDatetimeCode=false and you're using the latest version of mysql JDBC connector. So for example:
String url =
"jdbc:mysql://localhost/mydb?useLegacyDatetimeCode=false
If you download the mysql-connector source code and look at setTimestamp, it's very easy to see what's happening:
If use legacy date time code = false, newSetTimestampInternal(...) is called. Then, if the Calendar passed to newSetTimestampInternal is NULL, your date object is formatted in the database's time zone:
this.tsdf = new SimpleDateFormat("''yyyy-MM-dd HH:mm:ss", Locale.US);
this.tsdf.setTimeZone(this.connection.getServerTimezoneTZ());
timestampString = this.tsdf.format(x);
It's very important that Calendar is null - so make sure you're using:
setTimestamp(int,Timestamp).
... NOT setTimestamp(int,Timestamp,Calendar).
It should be obvious now how this works. If you construct a date: January 5, 2011 3:00 AM in America/Los_Angeles (or whatever time zone you want) using java.util.Calendar and call setTimestamp(1, myDate), then it will take your date, use SimpleDateFormat to format it in the database time zone. So if your DB is in America/New_York, it will construct the String '2011-01-05 6:00:00' to be inserted (since NY is ahead of LA by 3 hours).
To retrieve the date, use getTimestamp(int) (without the Calendar). Once again it will use the database time zone to build a date.
Note: The webserver time zone is completely irrelevant now! If you don't set useLegacyDatetimecode to false, the webserver time zone is used for formatting - adding lots of confusion.
Note:
It's possible MySQL my complain that the server time zone is ambiguous. For example, if your database is set to use EST, there might be several possible EST time zones in Java, so you can clarify this for mysql-connector by telling it exactly what the database time zone is:
String url =
"jdbc:mysql://localhost/mydb?useLegacyDatetimeCode=false&serverTimezone=America/New_York";
You only need to do this if it complains.
At first, the problem is because you did't put any parameter for mysqli_error. I can see that it has been solved based on the post here. Most probably, the next problem is cause by wrong file path for the included file.. .
Are you sure this code
$myConnection = mysqli_connect("$db_host","$db_username","$db_pass","$db_name") or die ("could not connect to mysql");
is in the 'scripts' folder and your main code file is on the same level as the script folder?
str_replace()
can take an array, so you could do:
$new_str = str_replace(str_split('\\/:*?"<>|'), ' ', $string);
Alternatively you could use preg_replace()
:
$new_str = preg_replace('~[\\\\/:*?"<>|]~', ' ', $string);
In Python integers will automatically switch from a fixed-size int
representation into a variable width long
representation once you pass the value sys.maxint
, which is either 231 - 1 or 263 - 1 depending on your platform. Notice the L
that gets appended here:
>>> 9223372036854775807
9223372036854775807
>>> 9223372036854775808
9223372036854775808L
From the Python manual:
Numbers are created by numeric literals or as the result of built-in functions and operators. Unadorned integer literals (including binary, hex, and octal numbers) yield plain integers unless the value they denote is too large to be represented as a plain integer, in which case they yield a long integer. Integer literals with an
'L'
or'l'
suffix yield long integers ('L'
is preferred because1l
looks too much like eleven!).
Python tries very hard to pretend its integers are mathematical integers and are unbounded. It can, for instance, calculate a googol with ease:
>>> 10**100
10000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000L
SELECT *
FROM table
WHERE id = (SELECT MAX(id) FROM TABLE)
You could look for the presence of a map key or see if it's in a set.
Depending on what you're actually doing, though, you might be trying to solve the problem wrong :)
CTRL+SHIFT+I brings up the developers tools.
PROBLEM
simplexml_load_file
is throwing parsing error parser
error : xmlParseEntityRef
while trying to load the XML file from a URL.CAUSE
&
value
instead of &
. It is quite possible that there are other errors which aren't obvious at this point of time.THINGS OUT OF OUR CONTROL
simplexml_load_file
function, but it looks like we don't have any control over how the XML is created. simplexml_load_file
to process an
invalid XML file. It does not leave us with many options, other than
fixing the XML file itself.POSSIBLE SOLUTION
Convert Invalid XML to Valid XML. It can be done using PHP tidy extension
. Further instructions can be found from http://php.net/manual/en/book.tidy.php
Once you are sure that the extension exists or is installed, please do the following.
/**
* As per the question asked, the URL is loaded into a variable first,
* which we can assume to be $xml
*/
$xml = <<<XML
<?xml version="1.0" encoding="UTF-8"?>
<project orderno="6" campaign_name="International Relief & Development for under developed nations">
<invalid-data>Some other data containing & in it</invalid-data>
<unclosed-tag>
</project>
XML;
/**
* Whenever we use tidy it is best to pass some configuration options
* similar to $tidyConfig. In this particular case we are making sure that
* tidy understands that our input and output is XML.
*/
$tidyConfig = array (
'indent' => true,
'input-xml' => true,
'output-xml' => true,
'wrap' => 200
);
/**
* Now we can use tidy to parse the string and then repair it.
*/
$tidy = new tidy;
$tidy->parseString($xml, $tidyConfig, 'utf8');
$tidy->cleanRepair();
/**
* If we try to output the repaired XML string by echoing $tidy it should look like.
<?xml version="1.0" encoding="utf-8"?>
<project orderno="6" campaign_name="International Relief & Development for under developed nations">
<invalid-data>Some other data containing & in it</invalid-data>
<unclosed-tag></unclosed-tag>
</project>
* As you can see that & is now fixed in campaign_name attribute
* and also with-in invalid-data element. You can also see that the
* <unclosed-tag> which didn't had a close tag, has been fixed too.
*/
echo $tidy;
/**
* Now when we try to use simplexml_load_string to load the clean XML. When we
* try to print_r it should look something like below.
SimpleXMLElement Object
(
[@attributes] => Array
(
[orderno] => 6
[campaign_name] => International Relief & Development for under developed nations
)
[invalid-data] => Some other data containing & in it
[unclosed-tag] => SimpleXMLElement Object
(
)
)
*/
$simpleXmlElement = simplexml_load_string($tidy);
print_r($simpleXmlElement);
CAUTION
The developer should try to compare the invalid XML with a valid XML (generated by tidy), to see there are no adverse side effects after using tidy. Tidy does an extremely good job of doing it correctly, but it never hurts to see it visually and to be 100% sure. In our case it should be as simple as comparing $xml with $tidy.
http://docs.notepad-plus-plus.org/index.php/Inserting_Variable_Text
Notepad++ comes equipped with a Edit -> Column "Alt+C" Editor which can work on a rectangular selection in two different ways: Coledit.png inserting some fixed text on every line including and following the current line, at the column of the insertion point (aka caret). Initially selected text is left untouched. As the picture illustrates, a linear series of numbers can be inserted in the same manner. The starting value and increment are to be provided. Left padding with zeroes is an option, and the number may be entered in base 2, 8, 10 or 16 - this is how the computed values will be displayed too, padding being based on the largest.
If you want to store multiple values for a key (if I understand you correctly), you could try a MultiHashMap (available in various libraries, not only commons-collections).
SELECT IFNULL(SUM(Column1), 0) AS total FROM...
SELECT COALESCE(SUM(Column1), 0) AS total FROM...
The difference between them is that IFNULL
is a MySQL extension that takes two arguments, and COALESCE
is a standard SQL function that can take one or more arguments. When you only have two arguments using IFNULL
is slightly faster, though here the difference is insignificant since it is only called once.
If you have your project open in Eclipse(Mars) IDE: Right click on the project in eclipse Click on TestNG Click on "Convert to TestNG"
This creates a new testng.xml file and prompts you to overwrite the existing one (!!!Warning, this will erase your previous testng.xml!!!). Click Yes.
Run as Maven test build.
I needed to add this event to multiple elements that might have a scrollbar. For the cases where no scrollbar was present, the main scrollbar didn't work as it should. So i made a small change to @Šime code as follows:
$( '.scrollable' ).on( 'mousewheel DOMMouseScroll', function ( e ) {
if($(this).prop('scrollHeight') > $(this).height())
{
var e0 = e.originalEvent, delta = e0.wheelDelta || -e0.detail;
this.scrollTop += ( delta < 0 ? 1 : -1 ) * 30;
e.preventDefault();
}
});
Now, only elements with a scrollbar will prevent the main scroll from begin stopped.
.m2/repository
and delete the conflicting filesmvn -U clean install
Properties
.Libraries
.Compile tab
- click Add Jar/Folder
button.Or
Libraries
.Add Jar/Folder
.How can I display these open transactions and commit or cancel them?
There is no open transaction, MySQL will rollback the transaction upon disconnect.
You cannot commit the transaction (IFAIK).
You display threads using
SHOW FULL PROCESSLIST
See: http://dev.mysql.com/doc/refman/5.1/en/thread-information.html
It will not help you, because you cannot commit a transaction from a broken connection.
What happens when a connection breaks
From the MySQL docs: http://dev.mysql.com/doc/refman/5.0/en/mysql-tips.html
4.5.1.6.3. Disabling mysql Auto-Reconnect
If the mysql client loses its connection to the server while sending a statement, it immediately and automatically tries to reconnect once to the server and send the statement again. However, even if mysql succeeds in reconnecting, your first connection has ended and all your previous session objects and settings are lost: temporary tables, the autocommit mode, and user-defined and session variables. Also, any current transaction rolls back.
This behavior may be dangerous for you, as in the following example where the server was shut down and restarted between the first and second statements without you knowing it:
Also see: http://dev.mysql.com/doc/refman/5.0/en/auto-reconnect.html
How to diagnose and fix this
To check for auto-reconnection:
If an automatic reconnection does occur (for example, as a result of calling mysql_ping()), there is no explicit indication of it. To check for reconnection, call
mysql_thread_id()
to get the original connection identifier before callingmysql_ping()
, then callmysql_thread_id()
again to see whether the identifier has changed.
Make sure you keep your last query (transaction) in the client so that you can resubmit it if need be.
And disable auto-reconnect mode, because that is dangerous, implement your own reconnect instead, so that you know when a drop occurs and you can resubmit that query.
Building off of deepee1 and this, here's how to accept a class name in a string, and then use it to read and write to a database with LINQ. I use "dynamic" instead of deepee1's casting because it allows me to assign properties, which allows us to dynamically select and operate on any table we want.
Type tableType = Assembly.GetExecutingAssembly().GetType("NameSpace.TableName");
ITable itable = dbcontext.GetTable(tableType);
//prints contents of the table
foreach (object y in itable) {
string value = (string)y.GetType().GetProperty("ColumnName").GetValue(y, null);
Console.WriteLine(value);
}
//inserting into a table
dynamic tableClass = Activator.CreateInstance(tableType);
//Alternative to using tableType, using Tony's tips
dynamic tableClass = Activator.CreateInstance(null, "NameSpace.TableName").Unwrap();
tableClass.Word = userParameter;
itable.InsertOnSubmit(tableClass);
dbcontext.SubmitChanges();
//sql equivalent
dbcontext.ExecuteCommand("INSERT INTO [TableNme]([ColumnName]) VALUES ({0})", userParameter);
What is Looper?
Looper is a class which is used to execute the Messages(Runnables) in a queue. Normal threads have no such queue, e.g. simple thread does not have any queue. It executes once and after method execution finishes, the thread will not run another Message(Runnable).
Where we can use Looper class?
If someone wants to execute multiple messages(Runnables) then he should use the Looper class which is responsible for creating a queue in the thread. For example, while writing an application that downloads files from the internet, we can use Looper class to put files to be downloaded in the queue.
How it works?
There is prepare()
method to prepare the Looper. Then you can use loop()
method to create a message loop in the current thread and now your Looper is ready to execute the requests in the queue until you quit the loop.
Here is the code by which you can prepare the Looper.
class LooperThread extends Thread {
public Handler mHandler;
@Override
public void run() {
Looper.prepare();
mHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
// process incoming messages here
}
};
Looper.loop();
}
}
Have you tried the match()
or charmatch()
functions?
Example use:
match(c("A1", "A9", "A6"), myfile$Letter)
You can use span
elements instead of the br
if you want the white space method to work, as it depends on pseudo-elements which are "not defined" for replaced elements.
HTML
<p>
To break lines<span class="line-break">in a paragraph,</span><span>don't use</span><span>the 'br' element.</span>
</p>
CSS
span {white-space: pre;}
span:after {content: ' ';}
span.line-break {display: block;}
span.line-break:after {content: none;}
The line break is simply achieved by setting the appropriate span element to display:block
.
By using IDs and/ or Classes in your HTML markup you can easily target every single or combination of span elements by CSS or use CSS selectors like nth-child()
.
So you can e.g. define different break points by using media queries for a responsive layout.
And you can also simply add/ remove/ toggle classes by Javascript (jQuery).
The "advantage" of this method is its robustness - works in every browser that supports pseudo-elements (see: Can I use - CSS Generated content).
As an alternative it is also possible to add a line break via pseudo-elements:
span.break:before {
content: "\A";
white-space: pre;
}
Filter the version number.
java -version 2>&1 | head -n 1 | awk -F '"' '{print $2}'
You can LEFT JOIN the two tables. If there is no corresponding row in the second table, the values will be NULL.
SELECT id FROM partmaster LEFT JOIN product_details ON (...) WHERE product_details.part_num IS NULL
import javax.servlet.annotation.*;
(no one has written this, but need to import this as WebInitparam is not recognized by the other packages)
a % b
in c++ default:
(-7/3) => -2
-2 * 3 => -6
so a%b => -1
(7/-3) => -2
-2 * -3 => 6
so a%b => 1
in python:
-7 % 3 => 2
7 % -3 => -2
in c++ to python:
(b + (a%b)) % b
Now you can use nameof
:
public static void Output<T>(IEnumerable<T> dataSource) where T : class
{
string dataSourceName = typeof(T).Name;
switch (dataSourceName)
{
case nameof(CustomerDetails):
var t = 123;
break;
default:
Console.WriteLine("Test");
}
}
nameof(CustomerDetails)
is basically identical to the string literal "CustomerDetails"
, but with a compile-time check that it refers to some symbol (to prevent a typo).
nameof
appeared in C# 6.0, so after this question was asked.
Oracle SQL Developer doesn't support connections to PostgreSQL. Use pgAdmin to connect to PostgreSQL instead, you can get it from the following URL http://www.pgadmin.org/download/windows.php
. = This location
.. = Up a directory
So, ./foo.html
is just foo.html
. And it is optional, but may have relevance if a script generated the path (relevance to the script that is, not how the reference works).
For those who are looking to combine 2 color images into one, this is a slight mod on Andrey's answer which worked for me :
img1 = cv2.imread(imageFile1)
img2 = cv2.imread(imageFile2)
h1, w1 = img1.shape[:2]
h2, w2 = img2.shape[:2]
#create empty matrix
vis = np.zeros((max(h1, h2), w1+w2,3), np.uint8)
#combine 2 images
vis[:h1, :w1,:3] = img1
vis[:h2, w1:w1+w2,:3] = img2
I would use Pandas with col number
f = pd.read_csv("test.csv", usecols=[0,1,3,4])
f.to_csv("test.csv", index=False)
I've noticed bizarre behavior with Eclipse version 4.2.1 delivering me this error:
String cannot be resolved to a variable
With this Java code:
if (true)
String my_variable = "somevalue";
System.out.println("foobar");
You would think this code is very straight forward, the conditional is true, we set my_variable to somevalue. And it should print foobar. Right?
Wrong, you get the above mentioned compile time error. Eclipse is trying to prevent you from making a mistake by assuming that both statements are within the if statement.
If you put braces around the conditional block like this:
if (true){
String my_variable = "somevalue"; }
System.out.println("foobar");
Then it compiles and runs fine. Apparently poorly bracketed conditionals are fair game for generating compile time errors now.
I assume you mean you're looking for something that is faster than datetime.datetime.strftime(), and are essentially stripping the non-alpha characters from a utc timestamp.
You're approach is marginally faster, and I think you can speed things up even more by slicing the string:
>>> import timeit
>>> t=timeit.Timer('datetime.utcnow().strftime("%Y%m%d%H%M%S%f")','''
... from datetime import datetime''')
>>> t.timeit(number=10000000)
116.15451288223267
>>> def replaceutc(s):
... return s\
... .replace('-','') \
... .replace(':','') \
... .replace('.','') \
... .replace(' ','') \
... .strip()
...
>>> t=timeit.Timer('replaceutc(str(datetime.datetime.utcnow()))','''
... from __main__ import replaceutc
... import datetime''')
>>> t.timeit(number=10000000)
77.96774983406067
>>> def sliceutc(s):
... return s[:4] + s[5:7] + s[8:10] + s[11:13] + s[14:16] + s[17:19] + s[20:]
...
>>> t=timeit.Timer('sliceutc(str(datetime.utcnow()))','''
... from __main__ import sliceutc
... from datetime import datetime''')
>>> t.timeit(number=10000000)
62.378515005111694
Hm, would it be possible to simply do this:
The first time your user opens a pdf, using Javascript you make a popout that basically says "If you cannot see your document, please click HERE". Make "HERE" a big button where it will explain to your user what's the problem. Also make another button "everything's fine". If the user clicks on this one, you remember it, so it isn't displayed in the future.
I'm trying to be practical. Going to great lengths trying to solve this kind of problem "properly" for a small subset of Adobe Reader versions doesn't sound very productive to me.
you are looking for http://api.jquery.com/hasClass/
<div id="mydiv" class="foo bar"></div>
$('#mydiv').hasClass('foo') //returns ture
Google recently added this comprehensive list of reference devices and resolutions, including new device types such as wearables and laptops:
Here is what you can do:-
Exim SSL certificates
By default, the /etc/exim.conf will use the cert/key files:
/etc/exim.cert
/etc/exim.key
so if you're wondering where to set your files, that's where.
They're controlled by the exim.conf's options:
tls_certificate = /etc/exim.cert
tls_privatekey = /etc/exim.key
Intermediate Certificates
If you have a CA Root certificate (ca bundle, chain, etc.) you'll add the contents of your CA into the exim.cert, after your actual certificate.
Probably a good idea to make sure you have a copy of everything elsewhere in case you make an error.
Dovecot and ProFtpd should also read it correctly, so dovecot no longer needs the ssl_ca option. So for both cases, there is no need to make any changes to either the exim.conf or dovecot.conf(/etc/dovecot/conf/ssl.conf)
This is what worked for me...
import cv2
import numpy as np
#Created an image (really an ndarray) with three channels
new_image = np.ndarray((3, num_rows, num_cols), dtype=int)
#Did manipulations for my project where my array values went way over 255
#Eventually returned numbers to between 0 and 255
#Converted the datatype to np.uint8
new_image = new_image.astype(np.uint8)
#Separated the channels in my new image
new_image_red, new_image_green, new_image_blue = new_image
#Stacked the channels
new_rgb = np.dstack([new_image_red, new_image_green, new_image_blue])
#Displayed the image
cv2.imshow("WindowNameHere", new_rgbrgb)
cv2.waitKey(0)
Your modification of sys.path
assumes the current working directory is always in main/
. This is not the case. Instead, just add the parent directory to sys.path
:
import sys
import os.path
sys.path.append(os.path.join(os.path.dirname(__file__), '..'))
import gen_py.lib
Don't forget to include a file __init__.py
in gen_py and lib - otherwise, they won't be recognized as Python modules.
The problem is that you're displaying time()
, which is a UNIX timestamp based on GMT/UTC. That’s why it doesn’t change. date()
on the other hand, formats the time based on that timestamp.
A timestamp is the number of seconds since the Unix Epoch (January 1 1970 00:00:00 GMT).
echo date('Y-m-d H:i:s T', time()) . "<br>\n";
date_default_timezone_set('UTC');
echo date('Y-m-d H:i:s T', time()) . "<br>\n";
deltaY = Math.Abs(P2.y - P1.y);
deltaX = Math.Abs(P2.x - P1.x);
angleInDegrees = Math.atan2(deltaY, deltaX) * 180 / PI
if(p2.y > p1.y) // Second point is lower than first, angle goes down (180-360)
{
if(p2.x < p1.x)//Second point is to the left of first (180-270)
angleInDegrees += 180;
else //(270-360)
angleInDegrees += 270;
}
else if (p2.x < p1.x) //Second point is top left of first (90-180)
angleInDegrees += 90;
It's easier than it is thought:
my_str = "hello world"
my_str_as_bytes = str.encode(my_str)
type(my_str_as_bytes) # ensure it is byte representation
my_decoded_str = my_str_as_bytes.decode()
type(my_decoded_str) # ensure it is string representation
You could open the file in binary mode:
import hashlib
with open(hash_file) as file:
control_hash = file.readline().rstrip("\n")
wordlistfile = open(wordlist, "rb")
# ...
for line in wordlistfile:
if hashlib.md5(line.rstrip(b'\n\r')).hexdigest() == control_hash:
# collision
If you only want the orientation tag and nothing else and don't like to include another huge javascript library I wrote a little code that extracts the orientation tag as fast as possible (It uses DataView and readAsArrayBuffer
which are available in IE10+, but you can write your own data reader for older browsers):
function getOrientation(file, callback) {_x000D_
var reader = new FileReader();_x000D_
reader.onload = function(e) {_x000D_
_x000D_
var view = new DataView(e.target.result);_x000D_
if (view.getUint16(0, false) != 0xFFD8)_x000D_
{_x000D_
return callback(-2);_x000D_
}_x000D_
var length = view.byteLength, offset = 2;_x000D_
while (offset < length) _x000D_
{_x000D_
if (view.getUint16(offset+2, false) <= 8) return callback(-1);_x000D_
var marker = view.getUint16(offset, false);_x000D_
offset += 2;_x000D_
if (marker == 0xFFE1) _x000D_
{_x000D_
if (view.getUint32(offset += 2, false) != 0x45786966) _x000D_
{_x000D_
return callback(-1);_x000D_
}_x000D_
_x000D_
var little = view.getUint16(offset += 6, false) == 0x4949;_x000D_
offset += view.getUint32(offset + 4, little);_x000D_
var tags = view.getUint16(offset, little);_x000D_
offset += 2;_x000D_
for (var i = 0; i < tags; i++)_x000D_
{_x000D_
if (view.getUint16(offset + (i * 12), little) == 0x0112)_x000D_
{_x000D_
return callback(view.getUint16(offset + (i * 12) + 8, little));_x000D_
}_x000D_
}_x000D_
}_x000D_
else if ((marker & 0xFF00) != 0xFF00)_x000D_
{_x000D_
break;_x000D_
}_x000D_
else_x000D_
{ _x000D_
offset += view.getUint16(offset, false);_x000D_
}_x000D_
}_x000D_
return callback(-1);_x000D_
};_x000D_
reader.readAsArrayBuffer(file);_x000D_
}_x000D_
_x000D_
// usage:_x000D_
var input = document.getElementById('input');_x000D_
input.onchange = function(e) {_x000D_
getOrientation(input.files[0], function(orientation) {_x000D_
alert('orientation: ' + orientation);_x000D_
});_x000D_
}
_x000D_
<input id='input' type='file' />
_x000D_
values:
-2: not jpeg
-1: not defined
For those using Typescript, you can use the following code:
export const getOrientation = (file: File, callback: Function) => {
var reader = new FileReader();
reader.onload = (event: ProgressEvent) => {
if (! event.target) {
return;
}
const file = event.target as FileReader;
const view = new DataView(file.result as ArrayBuffer);
if (view.getUint16(0, false) != 0xFFD8) {
return callback(-2);
}
const length = view.byteLength
let offset = 2;
while (offset < length)
{
if (view.getUint16(offset+2, false) <= 8) return callback(-1);
let marker = view.getUint16(offset, false);
offset += 2;
if (marker == 0xFFE1) {
if (view.getUint32(offset += 2, false) != 0x45786966) {
return callback(-1);
}
let little = view.getUint16(offset += 6, false) == 0x4949;
offset += view.getUint32(offset + 4, little);
let tags = view.getUint16(offset, little);
offset += 2;
for (let i = 0; i < tags; i++) {
if (view.getUint16(offset + (i * 12), little) == 0x0112) {
return callback(view.getUint16(offset + (i * 12) + 8, little));
}
}
} else if ((marker & 0xFF00) != 0xFF00) {
break;
}
else {
offset += view.getUint16(offset, false);
}
}
return callback(-1);
};
reader.readAsArrayBuffer(file);
}
Use the left
function:
QString yourString = "This is a string";
QString leftSide = yourString.left(5);
qDebug() << leftSide; // output "This "
Also have a look at mid()
if you want more control.
Use print("use this bracket -sample text")
In Python 3 print "Hello world"
gives invalid syntax error.
To display string content in Python3 have to use this ("Hello world")
brackets.
I think You ask for Boolean algebra which describes the output of various operations performed on boolean variables. Just look at the article on Wikipedia.
For vector graphics, ImageMagick has both a render resolution and an output size that are independent of each other.
Try something like
convert -density 300 image.eps -resize 1024x1024 image.jpg
Which will render your eps at 300dpi. If 300 * width > 1024, then it will be sharp. If you render it too high though, you waste a lot of memory drawing a really high-res graphic only to down sample it again. I don't currently know of a good way to render it at the "right" resolution in one IM command.
The order of the arguments matters! The -density X
argument needs to go before image.eps
because you want to affect the resolution that the input file is rendered at.
This is not super obvious in the manpage for convert
, but is hinted at:
SYNOPSIS
convert [input-option] input-file [output-option] output-file
just add a primary key to your table and then recreate your EF
Try to use different id and name parameters, currently you have same here. Please visit the link below for the same, this might be help you :
If you need to store a member function without the class instance, you can do something like this:
class MyClass
{
public:
void MemberFunc(int value)
{
//do something
}
};
// Store member function binding
auto callable = std::mem_fn(&MyClass::MemberFunc);
// Call with late supplied 'this'
MyClass myInst;
callable(&myInst, 123);
What would the storage type look like without auto? Something like this:
std::_Mem_fn_wrap<void,void (__cdecl TestA::*)(int),TestA,int> callable
You can also pass this function storage to a standard function binding
std::function<void(int)> binding = std::bind(callable, &testA, std::placeholders::_1);
binding(123); // Call
Past and future notes: An older interface std::mem_func existed, but has since been deprecated. A proposal exists, post C++17, to make pointer to member functions callable. This would be most welcome.
(This answer was updated, as the previous method using vq
isn't recognized anymore.)
Specifying the height of the video will change the quality accordingly. example for html 5;
<iframe style='width:100%; height:800px;' src='https://www.youtube.com/embed/xxxxxxxx'></iframe>
If you don't want to hardcode the width and height you can add a class to the iframe for css media queries.
Tested on a working server + passes the w3.org nuhtml validator.
On the Mac, you can create a certificate that's fully trusted by Chrome and Safari at the system level by doing the following:
# create a root authority cert
./create_root_cert_and_key.sh
# create a wildcard cert for mysite.com
./create_certificate_for_domain.sh mysite.com
# or create a cert for www.mysite.com, no wildcards
./create_certificate_for_domain.sh www.mysite.com www.mysite.com
v3.ext
, to avoid subject alternative name missing errorsIf you want to create a new self signed cert that's fully trusted using your own root authority, you can do it using these scripts.
#!/usr/bin/env bash
openssl genrsa -out rootCA.key 2048
openssl req -x509 -new -nodes -key rootCA.key -sha256 -days 1024 -out rootCA.pem
#!/usr/bin/env bash
if [ -z "$1" ]
then
echo "Please supply a subdomain to create a certificate for";
echo "e.g. www.mysite.com"
exit;
fi
if [ ! -f rootCA.pem ]; then
echo 'Please run "create_root_cert_and_key.sh" first, and try again!'
exit;
fi
if [ ! -f v3.ext ]; then
echo 'Please download the "v3.ext" file and try again!'
exit;
fi
# Create a new private key if one doesnt exist, or use the xeisting one if it does
if [ -f device.key ]; then
KEY_OPT="-key"
else
KEY_OPT="-keyout"
fi
DOMAIN=$1
COMMON_NAME=${2:-*.$1}
SUBJECT="/C=CA/ST=None/L=NB/O=None/CN=$COMMON_NAME"
NUM_OF_DAYS=825
openssl req -new -newkey rsa:2048 -sha256 -nodes $KEY_OPT device.key -subj "$SUBJECT" -out device.csr
cat v3.ext | sed s/%%DOMAIN%%/"$COMMON_NAME"/g > /tmp/__v3.ext
openssl x509 -req -in device.csr -CA rootCA.pem -CAkey rootCA.key -CAcreateserial -out device.crt -days $NUM_OF_DAYS -sha256 -extfile /tmp/__v3.ext
# move output files to final filenames
mv device.csr "$DOMAIN.csr"
cp device.crt "$DOMAIN.crt"
# remove temp file
rm -f device.crt;
echo
echo "###########################################################################"
echo Done!
echo "###########################################################################"
echo "To use these files on your server, simply copy both $DOMAIN.csr and"
echo "device.key to your webserver, and use like so (if Apache, for example)"
echo
echo " SSLCertificateFile /path_to_your_files/$DOMAIN.crt"
echo " SSLCertificateKeyFile /path_to_your_files/device.key"
authorityKeyIdentifier=keyid,issuer
basicConstraints=CA:FALSE
keyUsage = digitalSignature, nonRepudiation, keyEncipherment, dataEncipherment
subjectAltName = @alt_names
[alt_names]
DNS.1 = %%DOMAIN%%
To allow the self signed certificates to be FULLY trusted in Chrome and Safari, you need to import a new certificate authority into your Mac. To do so follow these instructions, or the more detailed instructions on this general process on the mitmproxy website:
You can do this one of 2 ways, at the command line, using this command which will prompt you for your password:
$ sudo security add-trusted-cert -d -r trustRoot -k /Library/Keychains/System.keychain rootCA.pem
or by using the Keychain Access
app:
and as a bonus, if you need java clients to trust the certificates, you can do so by importing your certs into the java keystore. Note this will remove the cert from the keystore if it already exists, as it needs to update it in case things change. It of course only does this for the certs being imported.
KEYSTORE="$(/usr/libexec/java_home)/jre/lib/security/cacerts";
function running_as_root()
{
if [ "$EUID" -ne 0 ]
then echo "NO"
exit
fi
echo "YES"
}
function import_certs_to_java_keystore
{
for crt in *.crt; do
echo prepping $crt
keytool -delete -storepass changeit -alias alias__${crt} -keystore $KEYSTORE;
keytool -import -file $crt -storepass changeit -noprompt --alias alias__${crt} -keystore $KEYSTORE
echo
done
}
if [ "$(running_as_root)" == "YES" ]
then
import_certs_to_java_keystore
else
echo "This script needs to be run as root!"
fi
It allows you to add as many base type parameters in your call as you like.
addTwoEach(10, 2, 4, 6)
whereas with the second form you have to use an array as parameter
addTwoEach(new int[] {10,2,4,6})
You can get a form value posted to a page using code similiar to this (C#) -
string formValue;
if (!string.IsNullOrEmpty(Request.Form["txtFormValue"]))
{
formValue= Request.Form["txtFormValue"];
}
or this (VB)
Dim formValue As String
If Not String.IsNullOrEmpty(Request.Form("txtFormValue")) Then
formValue = Request.Form("txtFormValue")
End If
Once you have the values you need you can then construct a SQL statement and and write the data to a database.
You can use systemPropertyVariables (java.protocol.handler.pkgs is your JVM argument name):
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.12.4</version>
<configuration>
<systemPropertyVariables>
<java.protocol.handler.pkgs>com.zunix.base</java.protocol.handler.pkgs>
<log4j.configuration>log4j-core.properties</log4j.configuration>
</systemPropertyVariables>
</configuration>
</plugin>
http://maven.apache.org/surefire/maven-surefire-plugin/examples/system-properties.html
Try this to validate HTTP URLs (uriName
is the URI you want to test):
Uri uriResult;
bool result = Uri.TryCreate(uriName, UriKind.Absolute, out uriResult)
&& uriResult.Scheme == Uri.UriSchemeHttp;
Or, if you want to accept both HTTP and HTTPS URLs as valid (per J0e3gan's comment):
Uri uriResult;
bool result = Uri.TryCreate(uriName, UriKind.Absolute, out uriResult)
&& (uriResult.Scheme == Uri.UriSchemeHttp || uriResult.Scheme == Uri.UriSchemeHttps);
If you look in the ISAPI And CGI Restrictions, and everything is already set to Allowed, then make sure that the ASP.NET v4.0.30319 handlers are even in the list. In my case they were not. This can be easy to overlook.
I added one for 32 %windir%\Microsoft.NET\Framework\v4.0.30319\aspnet_isapi.dll
and another for 64 bit %windir%\Microsoft.NET\Framework64\v4.0.30319\aspnet_isapi.dll
. You can name them both the same ASP.NET v4.0.30319
.
Check Allow extension path to execute.