I had the same problema, but as described in the manual.pdf, you have to:
You are using an Oracle Instant Client but have not set all required environment variables:
- PATH: Needs to include the Instant Client directory where oci.dll is located
- TNS_ADMIN: Needs to point to the directory where tnsnames.ora is located.
- NLS_LANG: Defines the language, territory, and character set for the client.
Regards
Also in addition to above solutions, also check the location where the tnsname ora file exists and compare with the path in the environment variable
Tools --> Preferences
, as shown in below image.expand Database --> select Advanced --> under "Tnsnames Directory" --> Browse the directory
where tnsnames.ora present.Drive:\oracle\product\10x.x.x\client_x\NETWORK\ADMIN
Now you can connect via the TNSnames options.
By default, tnsnames.ora is located in the $ORACLE_HOME/network/admin directory on UNIX operating systems and in the ORACLE_HOME\network\admin directory on Windows operating systems. tnsnames.ora can also be stored the following locations:
The directory specified by the TNS_ADMIN environment variable (or registry value)
On UNIX operating systems, the global configuration directory. For example, on the Solaris Operating System, this directory is /var/opt/oracle
If you have multiple ORACLE_HOMES, be aware of which one you are using, as the location of the tnsnames.ora file can vary from one ORACLE_HOME to the next.
For the person who mentioned the TWO_TASK environment variable, that is used to set a default database service name to connect to (which could be a database on another server). The service name you set TWO_TASK to is then looked up in the tnsnames.ora file when you connect.
The steps mentioned by Jason are very good and should work. There is a little twist with SQL Developer, though. It caches the connection specifications (host, service name, port) the first time it reads the tnsnames.ora file. Then, it does not invalidate the specs when the original entry is removed from the tnsname.ora file. The cache persists even after SQL Developer has been terminated and restarted. This is not such an illogical way of handling the situation. Even if a tnsnames.ora file is temporarily unavailable, SQL Developer can still make the connection as long as the original specifications are still true. The problem comes with their next little twist. SQL Developer treats service names in the tnsnames.ora file as case-sensitive values when resolving the connection. So if you used to have an entry name ABCD.world in the file and you replaced it with an new entry named abcd.world, SQL Developer would NOT update its connection specs for ABCD.world - it will treat abcd.world as a different connection altogether. Why am I not surprised that an Oracle product would treat as case-sensitive the contents of an oracle-developed file format that is expressly case-insensitive?
I had the same issue on Windows 7. The cause was, that I had been connected to VPN using Cisco AnyConnect Secure Mobility Client.
A "little" late to the party but the real answer to this - if you use Oracle.ManagedDataAccess
ODP.NET provider, you should forget about things like network\admin
, Oracle client
, Oracle_Home
, etc.
Here is what you need
C:\Program Files (x86)
. With full dev tools, under 60MbAt this point you have 2 options to connect.
a) In the connection string set datasource
in the following format
DataSource=ServerName:Port/SID . . .
or DataSource=IP:Port/SID . . .
b) Create tnsnames.ora
file (only it is going to be different from previous experiences). Have entry in it:
AAA = (DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = ServerNameOrIP)(PORT = 1521))
(CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = SIDNAME)))
And place this file into your bin folder, where your application is running from.
Now you can connect using your connection name - DataSource=AAA . . .
So, even though you have tnsnames.ora, with ODP.net managed it works a bit different - you create local TNS file. And now, it is easy to manage it.
To summarize - with managed, no need for heavy Oracle Client, Oracle_home
or knowing depths of oracle installation folders. Everything can be done within your .net application structures.
When using SQLFiddle, make sure that the separator is set to GO. Also the schema build script is executed in a different connection from the run script, so a temp table created in the one is not visible in the other. This fiddle shows that your code is valid and working in SQL 2012:
MS SQL Server 2012 Schema Setup:
Query 1:
CREATE TABLE #Names
(
Name1 VARCHAR(100),
Name2 VARCHAR(100)
)
INSERT INTO #Names
(Name1, Name2)
VALUES
('Matt', 'Matthew'),
('Matt', 'Marshal'),
('Matt', 'Mattison')
SELECT * FROM #NAMES
| NAME1 | NAME2 |
--------------------
| Matt | Matthew |
| Matt | Marshal |
| Matt | Mattison |
Here a SSMS 2012 screenshot:
I suspect you are having a problem with factors. For example,
> x = factor(4:8)
> x
[1] 4 5 6 7 8
Levels: 4 5 6 7 8
> as.numeric(x)
[1] 1 2 3 4 5
> as.numeric(as.character(x))
[1] 4 5 6 7 8
Some comments:
as.numeric
to do with these values?read.csv
, try using the argument stringsAsFactors=FALSE
sep="/t
and not sep="\t"
head(pitchman)
to check the first fews rows of your datapichman <- read.csv(file="picman.txt", header=TRUE, sep="/t")
since I don't have access to the data set.you should change cr_date(str) to datetime object then you 'll change the date to the specific format:
cr_date = '2013-10-31 18:23:29.000227'
cr_date = datetime.datetime.strptime(cr_date, '%Y-%m-%d %H:%M:%S.%f')
cr_date = cr_date.strftime("%m/%d/%Y")
Use tags label and our method for =, is bound to input. If follow the rules of the form, and avoid confusion with tags, use the following:
<style type="text/css">
label.lab:before { content: 'input: '; }
</style>
or compare (short code):
<style type="text/css">
div label { content: 'input: '; color: red; }
</style>
form....
<label class="lab" for="single"></label><input name="n" id="single" ...><label for="single"> - simle</label>
or compare (short code):
<div><label></label><input name="n" ...></div>
You can silence the "Snapshotting a view" warning by referencing the view
property before presenting the view controller. Doing so causes the view to load and allows iOS render it before taking the snapshot.
UIAlertController *controller = [UIAlertController alertControllerWithTitle:nil message:nil preferredStyle:UIAlertControllerStyleActionSheet];
controller.modalPresentationStyle = UIModalPresentationPopover;
controller.popoverPresentationController.barButtonItem = (UIBarButtonItem *)sender;
... setup the UIAlertController ...
[controller view]; // <--- Add to silence the warning.
[self presentViewController:controller animated:YES completion:nil];
From Python documentation. Using the built in format() function you can specify hexadecimal base using an 'x' or 'X' Example:
x= 255 print('the number is {:x}'.format(x))
Output:
the number is ff
Here are the base options
Type
'b' Binary format. Outputs the number in base 2.
'c' Character. Converts the integer to the corresponding unicode character before printing.
'd' Decimal Integer. Outputs the number in base 10.
'o' Octal format. Outputs the number in base 8.
'x' Hex format. Outputs the number in base 16, using lower- case letters for the digits above 9.
'X' Hex format. Outputs the number in base 16, using upper- case letters for the digits above 9.
'n' Number. This is the same as 'd', except that it uses the current locale setting to insert the appropriate number separator characters.
None The same as 'd'.
>>> numpy.array([[1, 2], [3, 4]])
array([[1, 2], [3, 4]])
Using ES6 the javascript becomes a little cleaner
handleFiles(input) {
const file = input.target.files[0];
const reader = new FileReader();
reader.onload = (event) => {
const file = event.target.result;
const allLines = file.split(/\r\n|\n/);
// Reading line by line
allLines.forEach((line) => {
console.log(line);
});
};
reader.onerror = (event) => {
alert(event.target.error.name);
};
reader.readAsText(file);
}
In my case this very problem was raised by wrong spelling, lower case 'c:' instead of upper case 'C:' in the path. I corrected spelling and problem vanished.
When you start typing it will disappear.If empty it will appear again.
<%= f.text_field :user_email,:value=>"",:placeholder => "Eg:[email protected]"%>
Simplest way...
Edit the config file with in ".git" folder to maintain the different username and email depends upon the repository
[user]
name = Bob
email = [email protected]
This below command show you which username and email set for this repository.
git config --get user.name
git config --get user.email
Example: for mine that config file in D:\workspace\eclipse\ipchat\.git\config
Here ipchat is my repo name
Then all you have to do is subtract that from total document height
jQuery(function () {
var documentHeight = jQuery(document).height();
var element = jQuery('#you-element');
var distanceFromBottom = documentHeight - (element.position().top + element.outerHeight(true));
alert(distanceFromBottom)
});
Support for the extended ternary operator was added in Twig 1.12.0.
If foo
echo yes
else echo no
:
{{ foo ? 'yes' : 'no' }}
If foo
echo it, else echo no
:
{{ foo ?: 'no' }}
or
{{ foo ? foo : 'no' }}
If foo
echo yes
else echo nothing:
{{ foo ? 'yes' }}
or
{{ foo ? 'yes' : '' }}
Returns the value of foo
if it is defined and not null, no
otherwise:
{{ foo ?? 'no' }}
Returns the value of foo
if it is defined (empty values also count), no
otherwise:
{{ foo|default('no') }}
The Mono project dropped Windows XP support and "forgot" to mention it. Although they still claim Windows XP SP2 is the minimum supported version, it is actually Windows Vista.
The last version of Mono to support Windows XP was 3.2.3.
Yes, you can include multiple style sheets, but you need to label them as alternate style sheets and give the user some way to activate them using JavaScript - perhaps by clicking a link.
To create an alternate style sheet:
<link type="text/css" href="nameOfAlterateStyleSheet.css" rel="alternate stylesheet" title="Blue" />
Next create a method in your Javascript file that will: 1. Load all the style sheets in an array 2. Example:
function getCSSArray()
{
var links = document.getElementsByTagName("link");
var link;
for(var i = 0; i < links.length; i++)
{
link = links[i];
if(/stylesheet/.test(link.rel))
{
sheets.push(link);
}
}
return sheets;
}
Then go through the array using some type of if/else loop that disables the style sheets you don't want and enables the style sheet you want. (You can write a separate method or insert the loop into the method above. I like to use the onload command to load the CSS array with the page, then call the printView method.)
function printView()
{
var sheet;
var title1 = "printVersion";
for(i = 0; i < sheets.length; i++)
{
sheet = sheets[i];
if(sheet.title == title1)
{
sheet.disabled = false;
}
else
{
sheet.disabled = true;
}
Lastly, create code in your HTML document that the user will activate the JavaScript method such as:
<a href="#" onClick ="methodName();">Link Name</a>
You want to use the onblur event.
<input type="text" name="name" value="value" onblur="alert(1);"/>
"scripts": {
"prestart": "npm install",
"start": "http-server -a localhost -p 8000 -c-1"
}
add this code snippet in your package.json, depending on your own configuration.
In my case this error appeared out of blue. While staring at that mysterious error I've realized, that I was trying to run the command outside of vm...
Yay recursion!
def trunc(s,l):
if l > 0:
return s[:l] + trunc(s, l - len(s))
return ''
Won't scale forever, but it's fine for smaller strings. And it's pretty.
I admit I just read the Little Schemer and I like recursion right now.
I had a case where the error was thrown by a
$state.go('');
Which is obvious. I guess this can help someone in future.
Well,
if "exam" in "example": print "yes!"
Is this an improvement? No. You could even add more statements to the body of the if
-clause by separating them with a semicolon. I recommend against that though.
There are many possibilities to do this in R. Here are some of them:
df <- read.table(header = TRUE, text = 'Gene Value
A 12
A 10
B 3
B 5
B 6
C 1
D 3
D 4')
# aggregate
aggregate(df$Value, by = list(df$Gene), max)
aggregate(Value ~ Gene, data = df, max)
# tapply
tapply(df$Value, df$Gene, max)
# split + lapply
lapply(split(df, df$Gene), function(y) max(y$Value))
# plyr
require(plyr)
ddply(df, .(Gene), summarise, Value = max(Value))
# dplyr
require(dplyr)
df %>% group_by(Gene) %>% summarise(Value = max(Value))
# data.table
require(data.table)
dt <- data.table(df)
dt[ , max(Value), by = Gene]
# doBy
require(doBy)
summaryBy(Value~Gene, data = df, FUN = max)
# sqldf
require(sqldf)
sqldf("select Gene, max(Value) as Value from df group by Gene", drv = 'SQLite')
# ave
df[as.logical(ave(df$Value, df$Gene, FUN = function(x) x == max(x))),]
Try this
div_x000D_
{_x000D_
width:100px;_x000D_
height:100px;_x000D_
background:red;_x000D_
transition: all 1s ease-in-out;_x000D_
-webkit-transition: all 1s ease-in-out;_x000D_
-moz-transition: all 1s ease-in-out;_x000D_
-o-transition: all 1s ease-in-out;_x000D_
-ms-transition: all 1s ease-in-out;_x000D_
position:absolute;_x000D_
}_x000D_
div:hover_x000D_
{_x000D_
transform: translate(3em,0);_x000D_
-webkit-transform: translate(3em,0);_x000D_
-moz-transform: translate(3em,0);_x000D_
-o-transform: translate(3em,0);_x000D_
-ms-transform: translate(3em,0);_x000D_
}
_x000D_
<p><b>Note:</b> This example does not work in Internet Explorer 9 and earlier versions.</p>_x000D_
<div></div>_x000D_
<p>Hover over the div element above, to see the transition effect.</p>
_x000D_
In EF6
modelBuilder.Properties()
.Where(x => x.GetCustomAttributes(false).OfType<DecimalPrecisionAttribute>().Any())
.Configure(c => {
var attr = (DecimalPrecisionAttribute)c.ClrPropertyInfo.GetCustomAttributes(typeof (DecimalPrecisionAttribute), true).FirstOrDefault();
c.HasPrecision(attr.Precision, attr.Scale);
});
This is answering a slightly different question, but since I got stuck on this myself, I hope it might be useful for someone else.
If you want to use allow_redirects=False
and get directly to the first redirect object, rather than following a chain of them, and you just want to get the redirect location directly out of the 302 response object, then r.url
won't work. Instead, it's the "Location" header:
r = requests.get('http://github.com/', allow_redirects=False)
r.status_code # 302
r.url # http://github.com, not https.
r.headers['Location'] # https://github.com/ -- the redirect destination
If you're on a mac, by far the simplest way to install is to use easy_install
sudo easy_install boto3
Add the following dependency. The scope should be compile then it will work.
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>compile</scope>
</dependency>
Use:
filename=$1
IFS=$'\n'
for next in `cat $filename`; do
echo "$next read from $filename"
done
exit 0
If you have set IFS
differently you will get odd results.
Your first formulation, image_url('logo.png')
, is correct. If the image is found, it will generate the path /assets/logo.png
(plus a hash in production). However, if Rails cannot find the image that you named, it will fall back to /images/logo.png
.
The next question is: why isn't Rails finding your image? If you put it in app/assets/images/logo.png, then you should be able to access it by going to http://localhost:3000/assets/logo.png
.
If that works, but your CSS isn't updating, you may need to clear the cache. Delete tmp/cache/assets
from your project directory and restart the server (webrick, etc.).
If that fails, you can also try just using background-image: url(logo.png);
That will cause your CSS to look for files with the same relative path (which in this case is /assets).
Use "$@"
instead of plain $@
if you actually wish your parameters to be passed the same.
Observe:
$ cat no_quotes.sh
#!/bin/bash
echo_args.sh $@
$ cat quotes.sh
#!/bin/bash
echo_args.sh "$@"
$ cat echo_args.sh
#!/bin/bash
echo Received: $1
echo Received: $2
echo Received: $3
echo Received: $4
$ ./no_quotes.sh first second
Received: first
Received: second
Received:
Received:
$ ./no_quotes.sh "one quoted arg"
Received: one
Received: quoted
Received: arg
Received:
$ ./quotes.sh first second
Received: first
Received: second
Received:
Received:
$ ./quotes.sh "one quoted arg"
Received: one quoted arg
Received:
Received:
Received:
If you don't have the Runnable references, on the first callback, get the obj of the message, and use removeCallbacksAndMessages() to remove all related callbacks.
Entering: /usr/bin/gcc worked for me.
You want to make filter dynamic then you have to use Lambda like
from django.db.models import Q
brands = ['ABC','DEF' , 'GHI']
queryset = Product.objects.filter(reduce(lambda x, y: x | y, [Q(brand=item) for item in brands]))
reduce(lambda x, y: x | y, [Q(brand=item) for item in brands])
is equivalent to
Q(brand=brands[0]) | Q(brand=brands[1]) | Q(brand=brands[2]) | .....
all you need to do is just add $mail->IsHTML(true); to the code it works fine..
pixels = np.array(pixels)
in this line you reassign pixels
. So, it may not a list anyhow. Though pixels
is not a list it has no attributes append
. Does it make sense?
I would use the scheduler (control panel) rather than a cmd line or other application.
Control Panel -> Scheduled tasks
I was using Dmitriy Lozenko's solution until i checked on an Asus Zenfone2, Marshmallow 6.0.1 and the solution is not working. The solution failed when getting EMULATED_STORAGE_TARGET, specifically for microSD path, i.e: /storage/F99C-10F4/. I edited the code to get the emulated root paths directly from emulated application paths with context.getExternalFilesDirs(null);
and add more known phone-model-specific physical paths.
To make our life easier, I made a library here. You can use it via gradle, maven, sbt, and leiningen build system.
If you like the old-fashioned way, you can also copy paste the file directly from here, but you will not know if there is an update in the future without checking it manually.
If you have any question or suggestion, please let me know
You already get the next line in this line of your code:
String line = sc.nextLine();
To get the words of a line, I would recommend to use:
String[] words = line.split(" ");
You might also be interested in the unit testing framework that is part of qooxdoo, an open source RIA framework similar to Dojo, ExtJS, etc. but with quite a comprehensive tool chain.
Try the online version of the testrunner. Hint: hit the gray arrow at the top left (should be made more obvious). It's a "play" button that runs the selected tests.
To find out more about the JS classes that let you define your unit tests, see the online API viewer.
For automated UI testing (based on Selenium RC), check out the Simulator project.
that means that the value for column project_id
on table comments
you are inserting not only doesn't exist
on table projects BUT also project_id
probably doesn't have default value. E.g. in my case I set it as NULL.
As for Laravel you can consider this expressions as a chunk of code of a migration php file, for example:
class ForeinToPhotosFromUsers extends Migration
{ /** * Run the migrations. * * @return void */
public function up()
{
Schema::table('users', function (Blueprint $table) {
$table->unsignedBigInteger('photo_id')->nullable();// ! ! ! THIS STRING ! ! !
$table->foreign('photo_id')->references('id')->on('photos');
});
}
}
Obviously you had to create the Model class(in my case it was Photo) next to all these.
Try this:
<script>
var myWindow = window.open("ANYURL", "MyWindowName", "width=700,height=700");
this.window.close();
</script>
This worked for me in some cases in Google Chrome 50. It does not seem to work when put inside a javascript function, though.
Facebook uses a very clever technique I described in context of my scrollbar plugin jsFancyScroll:
The scrolled content is actually scrolled natively by the browser scrolling mechanisms while the native scrollbar is hidden by using overflow definitions and the custom scrollbar is kept in sync by bi-directional event listening.
Feel free to use my plugin for your project: :)
https://github.com/leoselig/jsFancyScroll/
I highly recommend it over plugins such as TinyScrollbar that come with terrible performance issues!
An alternative would be to set a variable, and check whether it is defined:
SET ARG=%1
IF DEFINED ARG (echo "It is defined: %1") ELSE (echo "%%1 is not defined")
Unfortunately, using %1
directly with DEFINED
doesn't work.
Updated
Laravel 6 Through the model
To Generate a migration, seeder, factory, and resource controller for the model
php artisan make:model Todo -a
Or
php artisan make:model Todo -all
Other Options
-c, --controller Create a new controller for the model
-f, --factory Create a new factory for the model
--force Create the class even if the model already exists
-m, --migration Create a new migration file for the model
-s, --seed Create a new seeder file for the model
-p, --pivot Indicates if the generated model should be a custom inte rmediate table model
-r, --resource Indicates if the generated controller should be a resour ce controller
For More Help
php artisan make:model Todo -help
Hope Newbies will get help.
Convert your x-axis data from text to datetime.datetime
, use datetime.strptime
:
>>> from datetime import datetime
>>> datetime.strptime("2012-may-31 19:00", "%Y-%b-%d %H:%M")
datetime.datetime(2012, 5, 31, 19, 0)
This is an example of how to plot data once you have an array of datetimes:
import matplotlib.pyplot as plt
import datetime
import numpy as np
x = np.array([datetime.datetime(2013, 9, 28, i, 0) for i in range(24)])
y = np.random.randint(100, size=x.shape)
plt.plot(x,y)
plt.show()
I have seen reports of people having and additional, self terminating node in the machine.config file. Removing it resolved their issue. machine.config is found in \Windows\Microsoft.net\Framework\vXXXX\Config
. You could have a multitude of config files based on how many versions of the framework are installed, including 32 and 64 bit variants.
<system.data>
<DbProviderFactories>
<add name="Odbc Data Provider" invariant="System.Data.Odbc" ... />
<add name="OleDb Data Provider" invariant="System.Data.OleDb" ... />
<add name="OracleClient Data Provider" invariant="System.Data ... />
<add name="SqlClient Data Provider" invariant="System.Data ... />
<add name="IBM DB2 for i .NET Provider" invariant="IBM.Data ... />
<add name="Microsoft SQL Server Compact Data Provider" ... />
</DbProviderFactories>
<DbProviderFactories/> //remove this one!
</system.data>
Here is updated version from Darrelk answer. It is implemented using C# extension methods. It does not allocate memory (new Random()) every time this method is called.
public static class RandomExtensionMethods
{
public static double NextDoubleRange(this System.Random random, double minNumber, double maxNumber)
{
return random.NextDouble() * (maxNumber - minNumber) + minNumber;
}
}
Usage (make sure to import the namespace that contain the RandomExtensionMethods class):
var random = new System.Random();
double rx = random.NextDoubleRange(0.0, 1.0);
double ry = random.NextDoubleRange(0.0f, 1.0f);
double vx = random.NextDoubleRange(-0.005f, 0.005f);
double vy = random.NextDoubleRange(-0.005f, 0.005f);
Rand() does generate a uniform distribution of random numbers between 0 and 1, but the norminv (or norm.inv) function is taking the uniform distributed Rand() as an input to generate the normally distributed sample set.
Strictly it should match
[A-Za-z][-A-Za-z0-9_:.]*
But jquery seems to have problems with colons so it might be better to avoid them.
This is so simple to do on a PC: Windows OS: Send the os a command to change the text: import os
os.system('color a') #green text
print 'I like green'
raw_input('do you?')
Restrict the dimension of the NVARCHAR to 7, supplied to CONVERT to show only "YYYY-MM"
SELECT CONVERT(NVARCHAR(7),PaymentDate,120) [Month], SUM(Amount) [TotalAmount]
FROM Payments
GROUP BY CONVERT(NVARCHAR(7),PaymentDate,120)
ORDER BY [Month]
In bash (>=4.2) it is preferable to use printf's built-in date formatter (part of bash) rather than the external date
(usually GNU date).
As such:
# put current date as yyyy-mm-dd in $date
# -1 -> explicit current date, bash >=4.3 defaults to current time if not provided
# -2 -> start time for shell
printf -v date '%(%Y-%m-%d)T\n' -1
# put current date as yyyy-mm-dd HH:MM:SS in $date
printf -v date '%(%Y-%m-%d %H:%M:%S)T\n' -1
# to print directly remove -v flag, as such:
printf '%(%Y-%m-%d)T\n' -1
# -> current date printed to terminal
In bash (<4.2):
# put current date as yyyy-mm-dd in $date
date=$(date '+%Y-%m-%d')
# put current date as yyyy-mm-dd HH:MM:SS in $date
date=$(date '+%Y-%m-%d %H:%M:%S')
# print current date directly
echo $(date '+%Y-%m-%d')
Other available date formats can be viewed from the date man pages (for external non-bash specific command):
man date
$(this).index()
can be used to get the index of the clicked element if the elements are siblings.
<div id="container">
<a href="#" class="link">1</a>
<a href="#" class="link">2</a>
<a href="#" class="link">3</a>
<a href="#" class="link">4</a>
</div>
$('#container').on('click', 'a', function() {
console.log($(this).index());
});
_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.0.0/jquery.min.js"></script>
<div id="container">
<a href="#" class="link">1</a>
<a href="#" class="link">2</a>
<a href="#" class="link">3</a>
<a href="#" class="link">4</a>
</div>
_x000D_
If no argument is passed to the
.index()
method, the return value is an integer indicating the position of the first element within the jQuery object relative to its sibling elements.
Pass the selector to the index(selector)
.
$(this).index(selector);
Example:
Find the index of the <a>
element that is clicked.
<tr>
<td><a href="#" class="adwa">0001</a></td>
</tr>
<tr>
<td><a href="#" class="adwa">0002</a></td>
</tr>
<tr>
<td><a href="#" class="adwa">0003</a></td>
</tr>
<tr>
<td><a href="#" class="adwa">0004</a></td>
</tr>
$('#table').on('click', '.adwa', function() {
console.log($(this).index(".adwa"));
});
_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.0.0/jquery.min.js"></script>
<table id="table">
<thead>
<tr>
<th>vendor id</th>
</tr>
</thead>
<tbody>
<tr>
<td><a href="#" class="adwa">0001</a></td>
</tr>
<tr>
<td><a href="#" class="adwa">0002</a></td>
</tr>
<tr>
<td><a href="#" class="adwa">0003</a></td>
</tr>
<tr>
<td><a href="#" class="adwa">0004</a></td>
</tr>
</tbody>
</table>
_x000D_
Edit, 24 Nov 2016: this answer is apparently popular, so I am adding a note here. If you replace a tag on a central server, anyone who has the old tag—any clone of that central-server repository that already has the tag—could retain its old tag. So while this tells you how to do it, be really sure you want to do it. You'll need to get everyone who already has the "wrong" tag to delete their "wrong tag" and replace it with the new "right tag".
Testing in Git 2.10/2.11 shows that retaining the old tag is the default behavior for clients running git fetch
, and updating is the default behavior for clients running git fetch --tags
.
(Original answer follows.)
When you ask to push tags, git push --tags
sends (along with any commits and other objects needed and any other ref updates from the push settings) to the remote an update request of the form new-sha1 refs/tags/name
. (Well, it sends however many: one of those for each tag.)
The update request is modified by the remote to add an old-sha1
(or again, one for each tag), then delivered to the pre-receive and/or update hooks (whichever hooks exist on the remote). Those hooks can decide whether to allow or reject the tag create/delete/update.
The old-sha1
value is the all-zeros "null" SHA-1 if the tag is being created. The new-sha1
is the null SHA-1 if the tag is being deleted. Otherwise both SHA-1 values are real, valid values.
Even with no hooks, there's a sort of "built-in hook" that is also run: the remote will refuse to move a tag unless you use the "force" flag (though the "built-in hook" is always OK with both "add" and "delete"). The rejection message you're seeing is coming from this built-in hook. (Incidentally, this same built-in hook also rejects branch updates that are not fast-forwards.)1
But—here's one of the keys to understanding what's going on—the git push
step has no idea whether the remote has that tag now, and if so, what SHA-1 value it has. It only says "here's my complete list of tags, along with their SHA-1 values". The remote compares the values and if there are additions and/or changes, runs the hooks on those. (For tags that are the same, it does nothing at all. For tags you don't have that they do, it also does nothing!)
If you delete the tag locally, then push
, your push simply does not transfer the tag. The remote assumes no change should be made.
If you delete the tag locally, then create it pointing to a new place, then push
, your push transfers the tag, and the remote sees this as a tag-change and rejects the change, unless it's a force-push.
Thus, you have two options:
The latter is possible via git push
2 even though deleting the tag locally and push
ing has no effect. Assuming the name of the remote is origin
, and the tag you want it to delete is dev
:
git push origin :refs/tags/dev
This asks the remote to delete the tag. The presence or absence of the tag dev
in your local repository is irrelevant; this kind of push
, with :remoteref
as a refspec, is a pure-delete push.
The remote may or may not allow tag deletion (depending on any extra hooks added). If it allows the deletion, then the tag will be gone, and a second git push --tags
, when you have a local dev
tag pointing to some commit or annotated tag repo object, send your new dev
tag. On the remote, dev
will now be a newly created tag, so the remote will probably allow the push (again this depends on any extra hooks added).
The force-push is simpler. If you want to be sure not to update anything other than the tag, just tell git push
to push only that one refspec:
git push --force origin refs/tags/dev:refs/tags/dev
(note: you don't need --tags
if you're explicitly pushing just one tag ref-spec).
1Of course, the reason for this built-in hook is to help enforce the behavior that other users of that same remote-repo expect: that branches are not rewound, and tags do not move. If you force-push, you should let the other users know you are doing this, so that they can correct for it. Note that "tags don't move at all" is newly enforced by Git 1.8.2; previous versions would allow the tag to "move forward" in the commit graph, much like branch names. See the git 1.8.2 release notes.
2It's trivial if you can log in on the remote. Just go to the Git repository there and run git tag -d dev
. Note that either way—deleting the tag on the remote, or using git push
to delete it—there's a period of time when anyone who accesses the remote will find that the dev
tag is missing. (They will continue to have their own old tag, if they already have it, and they might even push their old tag back up before you can push the new one.)
Try Out with this:
firstMax = arr[0];
for (int i = 0; i<n; i++) {
if (firstMax < arr[i] ) {
secondMax = firstMax;
firstMax = arr[i];
}
}
For List :
List<Integer> intList
= stringList.stream().map(Integer::valueOf).collect(Collectors.toList());
For Array :
int[] intArray = Arrays.stream(stringArray).mapToInt(Integer::valueOf).toArray();
The correct solution is to add the timezone info e.g., to get the current time as an aware datetime object in Python 3:
from datetime import datetime, timezone
now = datetime.now(timezone.utc)
On older Python versions, you could define the utc
tzinfo object yourself (example from datetime docs):
from datetime import tzinfo, timedelta, datetime
ZERO = timedelta(0)
class UTC(tzinfo):
def utcoffset(self, dt):
return ZERO
def tzname(self, dt):
return "UTC"
def dst(self, dt):
return ZERO
utc = UTC()
then:
now = datetime.now(utc)
import time
startTime = time.time()
# Your code here !
print ('The script took {0} second !'.format(time.time() - startTime))
The previous code works for me with no problem !
It's mainly so you can make start and end statements clearer when creating HTML in loops:
<table>
<? while ($record = mysql_fetch_assoc($rs)): ?>
<? if (!$record['deleted']): ?>
<tr>
<? foreach ($display_fields as $field): ?>
<td><?= $record[$field] ?></td>
<? endforeach; ?>
<td>
<select name="action" onChange="submit">
<? foreach ($actions as $action): ?>
<option value="<?= $action ?>"><?= $action ?>
<? endforeach; ?>
</td>
</tr>
<? else: ?>
<tr><td colspan="<?= array_count($display_fields) ?>"><i>record <?= $record['id'] ?> has been deleted</i></td></tr>
<? endif; ?>
<? endwhile; ?>
</table>
versus
<table>
<? while ($record = mysql_fetch_assoc($rs)) { ?>
<? if (!$record['deleted']) { ?>
<tr>
<? foreach ($display_fields as $field) { ?>
<td><?= $record[$field] ?></td>
<? } ?>
<td>
<select name="action" onChange="submit">
<? foreach ($actions as $action) { ?>
<option value="<?= $action ?>"><?= action ?>
<? } ?>
</td>
</tr>
<? } else { ?>
<tr><td colspan="<?= array_count($display_fields) ?>"><i>record <?= $record['id'] ?> has been deleted</i></td></tr>
<? } ?>
<? } ?>
</table>
Hopefully my example is sufficient to demonstrate that once you have several layers of nested loops, and the indenting is thrown off by all the PHP open/close tags and the contained HTML (and maybe you have to indent the HTML a certain way to get your page the way you want), the alternate syntax (endforeach
) form can make things easier for your brain to parse. With the normal style, the closing }
can be left on their own and make it hard to tell what they're actually closing.
And now a keys iterator for range-based for loop.
template<typename C>
class keys_it
{
typename C::const_iterator it_;
public:
using key_type = typename C::key_type;
using pointer = typename C::key_type*;
using difference_type = std::ptrdiff_t;
keys_it(const typename C::const_iterator & it) : it_(it) {}
keys_it operator++(int ) /* postfix */ { return it_++ ; }
keys_it& operator++( ) /* prefix */ { ++it_; return *this ; }
const key_type& operator* ( ) const { return it_->first ; }
const key_type& operator->( ) const { return it_->first ; }
keys_it operator+ (difference_type v ) const { return it_ + v ; }
bool operator==(const keys_it& rhs) const { return it_ == rhs.it_; }
bool operator!=(const keys_it& rhs) const { return it_ != rhs.it_; }
};
template<typename C>
class keys_impl
{
const C & c;
public:
keys_impl(const C & container) : c(container) {}
const keys_it<C> begin() const { return keys_it<C>(std::begin(c)); }
const keys_it<C> end () const { return keys_it<C>(std::end (c)); }
};
template<typename C>
keys_impl<C> keys(const C & container) { return keys_impl<C>(container); }
Usage:
std::map<std::string,int> my_map;
// fill my_map
for (const std::string & k : keys(my_map))
{
// do things
}
That's what i was looking for. But nobody had it, it seems.
You get my OCD code alignment as a bonus.
As an exercise, write your own for values(my_map)
A constexpr symbolic constant must be given a value that is known at compile time. For example:
?constexpr int max = 100;
void use(int n)
{
constexpr int c1 = max+7; // OK: c1 is 107
constexpr int c2 = n+7; // Error: we don’t know the value of c2
// ...
}
To handle cases where the value of a “variable” that is initialized with a value that is not known at compile time but never changes after initialization, C++ offers a second form of constant (a const). For Example:
?constexpr int max = 100;
void use(int n)
{
constexpr int c1 = max+7; // OK: c1 is 107
const int c2 = n+7; // OK, but don’t try to change the value of c2
// ...
c2 = 7; // error: c2 is a const
}
Such “const variables” are very common for two reasons:
Reference : "Programming: Principles and Practice Using C++" by Stroustrup
I have a few tricks and work arounds to interesting 'features' of xtable and Latex that I'll share here.
Trick #1: Removing Duplicates in Columns and Trick #2: Using Booktabs
First, load packages and define my clean function
<<label=first, include=FALSE, echo=FALSE>>=
library(xtable)
library(plyr)
cleanf <- function(x){
oldx <- c(FALSE, x[-1]==x[-length(x)])
# is the value equal to the previous?
res <- x
res[oldx] <- NA
return(res)}
Now generate some fake data
data<-data.frame(animal=sample(c("elephant", "dog", "cat", "fish", "snake"), 100,replace=TRUE),
colour=sample(c("red", "blue", "green", "yellow"), 100,replace=TRUE),
size=rnorm(100,mean=500, sd=150),
age=rlnorm(100, meanlog=3, sdlog=0.5))
#generate a table
datatable<-ddply(data, .(animal, colour), function(df) {
return(data.frame(size=mean(df$size), age=mean(df$age)))
})
Now we can generate a table, and use the clean function to remove duplicate entries in the label columns.
cleandata<-datatable
cleandata$animal<-cleanf(cleandata$animal)
cleandata$colour<-cleanf(cleandata$colour)
@
this is a normal xtable
<<label=normal, results=tex, echo=FALSE>>=
print(
xtable(
datatable
),
tabular.environment='longtable',
latex.environments=c("center"),
floating=FALSE,
include.rownames=FALSE
)
@
this is a normal xtable where a custom function has turned duplicates to NA
<<label=cleandata, results=tex, echo=FALSE>>=
print(
xtable(
cleandata
),
tabular.environment='longtable',
latex.environments=c("center"),
floating=FALSE,
include.rownames=FALSE
)
@
This table uses the booktab package (and needs a \usepackage{booktabs} in the headers)
\begin{table}[!h]
\centering
\caption{table using booktabs.}
\label{tab:mytable}
<<label=booktabs, echo=F,results=tex>>=
mat <- xtable(cleandata,digits=rep(2,ncol(cleandata)+1))
foo<-0:(length(mat$animal))
bar<-foo[!is.na(mat$animal)]
print(mat,
sanitize.text.function = function(x){x},
floating=FALSE,
include.rownames=FALSE,
hline.after=NULL,
add.to.row=list(pos=list(-1,bar,nrow(mat)),
command=c("\\toprule ", "\\midrule ", "\\bottomrule ")))
#could extend this with \cmidrule to have a partial line over
#a sub category column and \addlinespace to add space before a total row
@
It's easy, you should set server http response header first. The problem is not with your front-end javascript code. You need to return this header:
Access-Control-Allow-Origin:*
or
Access-Control-Allow-Origin:your domain
In Apache config files, the code is like this:
Header set Access-Control-Allow-Origin "*"
In nodejs,the code is like this:
res.setHeader('Access-Control-Allow-Origin','*');
I just used this:
int? ReadTerminalID()
{
int? terminalID = null;
using (FbConnection conn = connManager.CreateFbConnection())
{
conn.Open();
FbCommand fbCommand = conn.CreateCommand();
fbCommand.CommandText = "SPSYNCGETIDTERMINAL";
fbCommand.CommandType = CommandType.StoredProcedure;
object result = fbCommand.ExecuteScalar(); // ExecuteScalar fails on null
if (result.GetType() != typeof(DBNull))
{
terminalID = (int?)result;
}
}
return terminalID;
}
In Oracle database we can achieve like this.
CREATE TABLE Student(
StudentID Number(38, 0) not null,
DepartmentID Number(38, 0) not null,
PRIMARY KEY (StudentID, DepartmentID)
);
string domainName = Request.Url.Host
--Gets the size of each index for the specified table
DECLARE @TableName sysname = N'SomeTable';
SELECT i.name AS IndexName
,8 * SUM(s.used_page_count) AS IndexSizeKB
FROM sys.indexes AS i
INNER JOIN sys.dm_db_partition_stats AS s
ON i.[object_id] = s.[object_id] AND i.index_id = s.index_id
WHERE s.[object_id] = OBJECT_ID(@TableName, N'U')
GROUP BY i.name
ORDER BY i.name;
SELECT i.name AS IndexName
,8 * SUM(a.used_pages) AS IndexSizeKB
FROM sys.indexes AS i
INNER JOIN sys.partitions AS p
ON i.[object_id] = p.[object_id] AND i.index_id = p.index_id
INNER JOIN sys.allocation_units AS a
ON p.partition_id = a.container_id
WHERE i.[object_id] = OBJECT_ID(@TableName, N'U')
GROUP BY i.name
ORDER BY i.name;
For anyone who might still need this in the future. My answer is very similar to qaweb, just a lot less intimidating. There seems to be no cool automatic simple function to formate date in VBS. So you'll have to do it manually. I took the different components of the date and concatenated them together.
Dim timeStamp
timeStamp = Month(Date)&"-"&Day(Date)&"-"&Year(Date)
run = msgbox(timeStamp)
Which will result in 11-22-2019
(depending on the current date)
uint8
, uint16
, uint32
, and uint64
are probably Microsoft-specific types.
As of the 1999 standard, C supports standard typedefs with similar meanings, defined in <stdint.h>
: uint8_t
, uint16_t
, uint32_t
, and uint64_t
. I'll assume that the Microsoft-specific types are defined similarly. Microsoft does support <stdint.h>
, at least as of Visual Studio 2010, but older code may use uint8
et al.
The predefined types char
, short
, int
et al have sizes that vary from one C implementation to another. The C standard has certain minimum requirements (char
is at least 8 bits, short
and int
are at least 16, long
is at least 32, and each type in that list is at least as wide as the previous type), but permits some flexibility. For example, I've seen systems where int
is 16, 32, or 64 bits.
char
is almost always exactly 8 bits, but it's permitted to be wider. And plain char
may be either signed or unsigned.
uint8_t
is required to be an unsigned integer type that's exactly 8 bits wide. It's likely to be a typedef for unsigned char
, though it might be a typedef for plain char
if plain char
happens to be unsigned. If there is no predefined 8-bit unsigned type, then uint8_t
will not be defined at all.
Similarly, each uintN_t
type is an unsigned type that's exactly N bits wide.
In addition, <stdint.h>
defines corresponding signed intN_t
types, as well as int_fastN_t
and int_leastN_t
types that are at least the specified width.
The [u]intN_t
types are guaranteed to have no padding bits, so the size of each is exactly N bits. The signed intN_t
types are required to use a 2's-complement representation.
Although uint32_t
might be the same as unsigned int
, for example, you shouldn't assume that. Use unsigned int
when you need an unsigned integer type that's at least 16 bits wide, and that's the "natural" size for the current system. Use uint32_t
when you need an unsigned integer type that's exactly 32 bits wide.
(And no, uint64
or uint64_t
is not the same as double
; double
is a floating-point type.)
In registration/login.html
(nested within templates
folder) if you insert the following line, the page will render like Django's original admin login page:
{% include "admin/login.html" %}
Note: The file should contain above lines only.
The setting was disabled in Jupyter 5.X
and higher by adding below code
pylab = Unicode('disabled', config=True,
help=_("""
DISABLED: use %pylab or %matplotlib in the notebook to enable matplotlib.
""")
)
@observe('pylab')
def _update_pylab(self, change):
"""when --pylab is specified, display a warning and exit"""
if change['new'] != 'warn':
backend = ' %s' % change['new']
else:
backend = ''
self.log.error(_("Support for specifying --pylab on the command line has been removed."))
self.log.error(
_("Please use `%pylab{0}` or `%matplotlib{0}` in the notebook itself.").format(backend)
)
self.exit(1)
And in previous versions it has majorly been a warning. But this not a big issue because Jupyter uses concepts of kernels
and you can find kernel for your project by running below command
$ jupyter kernelspec list
Available kernels:
python3 /Users/tarunlalwani/Documents/Projects/SO/notebookinline/bin/../share/jupyter/kernels/python3
This gives me the path to the kernel folder. Now if I open the /Users/tarunlalwani/Documents/Projects/SO/notebookinline/bin/../share/jupyter/kernels/python3/kernel.json
file, I see something like below
{
"argv": [
"python",
"-m",
"ipykernel_launcher",
"-f",
"{connection_file}",
],
"display_name": "Python 3",
"language": "python"
}
So you can see what command is executed to launch the kernel. So if you run the below command
$ python -m ipykernel_launcher --help
IPython: an enhanced interactive Python shell.
Subcommands
-----------
Subcommands are launched as `ipython-kernel cmd [args]`. For information on
using subcommand 'cmd', do: `ipython-kernel cmd -h`.
install
Install the IPython kernel
Options
-------
Arguments that take values are actually convenience aliases to full
Configurables, whose aliases are listed on the help line. For more information
on full configurables, see '--help-all'.
....
--pylab=<CaselessStrEnum> (InteractiveShellApp.pylab)
Default: None
Choices: ['auto', 'agg', 'gtk', 'gtk3', 'inline', 'ipympl', 'nbagg', 'notebook', 'osx', 'pdf', 'ps', 'qt', 'qt4', 'qt5', 'svg', 'tk', 'widget', 'wx']
Pre-load matplotlib and numpy for interactive use, selecting a particular
matplotlib backend and loop integration.
--matplotlib=<CaselessStrEnum> (InteractiveShellApp.matplotlib)
Default: None
Choices: ['auto', 'agg', 'gtk', 'gtk3', 'inline', 'ipympl', 'nbagg', 'notebook', 'osx', 'pdf', 'ps', 'qt', 'qt4', 'qt5', 'svg', 'tk', 'widget', 'wx']
Configure matplotlib for interactive use with the default matplotlib
backend.
...
To see all available configurables, use `--help-all`
So now if we update our kernel.json
file to
{
"argv": [
"python",
"-m",
"ipykernel_launcher",
"-f",
"{connection_file}",
"--pylab",
"inline"
],
"display_name": "Python 3",
"language": "python"
}
And if I run jupyter notebook
the graphs are automatically inline
Note the below approach also still works, where you create a file on below path
~/.ipython/profile_default/ipython_kernel_config.py
c = get_config()
c.IPKernelApp.matplotlib = 'inline'
But the disadvantage of this approach is that this is a global impact on every environment using python. You can consider that as an advantage also if you want to have a common behaviour across environments with a single change.
So choose which approach you would like to use based on your requirement
The recommended way is to use requests
module:
#!/usr/bin/env python
import requests # $ python -m pip install requests
####from pip._vendor import requests # bundled with python
url = 'https://httpbin.org/hidden-basic-auth/user/passwd'
user, password = 'user', 'passwd'
r = requests.get(url, auth=(user, password)) # send auth unconditionally
r.raise_for_status() # raise an exception if the authentication fails
Here's a single source Python 2/3 compatible urllib2
-based variant:
#!/usr/bin/env python
import base64
try:
from urllib.request import Request, urlopen
except ImportError: # Python 2
from urllib2 import Request, urlopen
credentials = '{user}:{password}'.format(**vars()).encode()
urlopen(Request(url, headers={'Authorization': # send auth unconditionally
b'Basic ' + base64.b64encode(credentials)})).close()
Python 3.5+ introduces HTTPPasswordMgrWithPriorAuth()
that allows:
..to eliminate unnecessary 401 response handling, or to unconditionally send credentials on the first request in order to communicate with servers that return a 404 response instead of a 401 if the Authorization header is not sent..
#!/usr/bin/env python3
import urllib.request as urllib2
password_manager = urllib2.HTTPPasswordMgrWithPriorAuth()
password_manager.add_password(None, url, user, password,
is_authenticated=True) # to handle 404 variant
auth_manager = urllib2.HTTPBasicAuthHandler(password_manager)
opener = urllib2.build_opener(auth_manager)
opener.open(url).close()
It is easy to replace HTTPBasicAuthHandler()
with ProxyBasicAuthHandler()
if necessary in this case.
If you are using "MVC 5" you may not see the file, and you should follow these steps: http://www.techjunkieblog.com/2015/05/aspnet-mvc-empty-project-adding.html
If you are using "ASP.NET 5" it has stopped using "bundling and minification" instead was replaced by gulp, bower, and npm. More information see https://jeffreyfritz.com/2015/05/where-did-my-asp-net-bundles-go-in-asp-net-5/
It works, just look at the bin/Debug folder, you are probably looking at app.config file inside project.
Privileges assigned through GRANT option do not need FLUSH PRIVILEGES to take effect - MySQL server will notice these changes and reload the grant tables immediately.
If you modify the grant tables directly using statements such as INSERT, UPDATE, or DELETE, your changes have no effect on privilege checking until you either restart the server or tell it to reload the tables. If you change the grant tables directly but forget to reload them, your changes have no effect until you restart the server. This may leave you wondering why your changes seem to make no difference!
To tell the server to reload the grant tables, perform a flush-privileges operation. This can be done by issuing a FLUSH PRIVILEGES statement or by executing a mysqladmin flush-privileges or mysqladmin reload command.
If you modify the grant tables indirectly using account-management statements such as GRANT, REVOKE, SET PASSWORD, or RENAME USER, the server notices these changes and loads the grant tables into memory again immediately.
The .append() method inserts the specified content as the last child of each element in the jQuery collection (To insert it as the first child, use .prepend()).
$("#tagscloud span").append(second);
$("#tagscloud span").append(third);
$("#tagscloud span").prepend(first);
Another option is to use uniqueResultOptional() method, which gives you Optional in result:
String hql="from DrawUnusedBalance where unusedBalanceDate= :today";
Query query=em.createQuery(hql);
query.setParameter("today",new LocalDate());
Optional<DrawUnusedBalance> drawUnusedBalance=query.uniqueResultOptional();
You need to wrap the text in a div
element and include the absolutely positioned element inside of it.
<div class="container">
<div class="inner">
<div class="full-height"></div>
[Your text here]
</div>
</div>
Css:
.inner: { position: relative; height: auto; }
.full-height: { height: 100%; }
Setting the inner div's position to relative
makes the absolutely position elements inside of it base their position and height on it rather than on the .container
div, which has a fixed height. Without the inner, relatively positioned div
, the .full-height
div will always calculate its dimensions and position based on .container
.
* {_x000D_
box-sizing: border-box;_x000D_
}_x000D_
_x000D_
.container {_x000D_
position: relative;_x000D_
border: solid 1px red;_x000D_
height: 256px;_x000D_
width: 256px;_x000D_
overflow: auto;_x000D_
float: left;_x000D_
margin-right: 16px;_x000D_
}_x000D_
_x000D_
.inner {_x000D_
position: relative;_x000D_
height: auto;_x000D_
}_x000D_
_x000D_
.full-height {_x000D_
position: absolute;_x000D_
top: 0;_x000D_
left: 0;_x000D_
right: 128px;_x000D_
bottom: 0;_x000D_
height: 100%;_x000D_
background: blue;_x000D_
}
_x000D_
<div class="container">_x000D_
<div class="full-height">_x000D_
</div>_x000D_
</div>_x000D_
_x000D_
<div class="container">_x000D_
<div class="inner">_x000D_
<div class="full-height">_x000D_
</div>_x000D_
_x000D_
Lorem ipsum dolor sit amet, consectetur adipisicing elit. Aspernatur mollitia maxime facere quae cumque perferendis cum atque quia repellendus rerum eaque quod quibusdam incidunt blanditiis possimus temporibus reiciendis deserunt sequi eveniet necessitatibus_x000D_
maiores quas assumenda voluptate qui odio laboriosam totam repudiandae? Doloremque dignissimos voluptatibus eveniet rem quasi minus ex cumque esse culpa cupiditate cum architecto! Facilis deleniti unde suscipit minima obcaecati vero ea soluta odio_x000D_
cupiditate placeat vitae nesciunt quis alias dolorum nemo sint facere. Deleniti itaque incidunt eligendi qui nemo corporis ducimus beatae consequatur est iusto dolorum consequuntur vero debitis saepe voluptatem impedit sint ea numquam quia voluptate_x000D_
quidem._x000D_
</div>_x000D_
</div>
_x000D_
If I understand you correctly, you want to compose a multipart request manually from an HTTP/REST console. The multipart format is simple; a brief introduction can be found in the HTML 4.01 spec. You need to come up with a boundary, which is a string not found in the content, let’s say HereGoes
. You set request header Content-Type: multipart/form-data; boundary=HereGoes
. Then this should be a valid request body:
--HereGoes
Content-Disposition: form-data; name="myJsonString"
Content-Type: application/json
{"foo": "bar"}
--HereGoes
Content-Disposition: form-data; name="photo"
Content-Type: image/jpeg
Content-Transfer-Encoding: base64
<...JPEG content in base64...>
--HereGoes--
You can either use
<h:outputText value="#{param['id']}" />
or
<h:outputText value="#{request.getParameter('id')}" />
However if you want to pass the parameters to your backing beans, using f:viewParam
is probably what you want. "A view parameter is a mapping between a query string parameter and a model value."
<f:viewParam name="id" value="#{blog.entryId}"/>
This will set the id param of the GET parameter to the blog bean's entryId
field. See http://java.dzone.com/articles/bookmarkability-jsf-2 for the details.
In my case I had special instruction into nginx configuration file:
location ~ \.(js|css|png|jpg|gif|swf|ico|pdf|mov|fla|zip|rar)$ {
try_files $uri =404;
}
All clients have received '404' because nginx nothing known about Flask.
I hope it help someone.
Ok, this is actually four different question. I'll address them one by one:
are both equals for the compiler? (speed, perf...)
Yes. The pointer dereferenciation and decay from type int (*)[100][280]
to int (*)[280]
is always a noop to your CPU. I wouldn't put it past a bad compiler to generate bogus code anyways, but a good optimizing compiler should compile both examples to the exact same code.
is one of these solutions eating more memory than the other?
As a corollary to my first answer, no.
what is the more frequently used by developers?
Definitely the variant without the extra (*pointer)
dereferenciation. For C programmers it is second nature to assume that any pointer may actually be a pointer to the first element of an array.
what is the best way, the 1st or the 2nd?
That depends on what you optimize for:
Idiomatic code uses variant 1. The declaration is missing the outer dimension, but all uses are exactly as a C programmer expects them to be.
If you want to make it explicit that you are pointing to an array, you can use variant 2. However, many seasoned C programmers will think that there's a third dimension hidden behind the innermost *
. Having no array dimension there will feel weird to most programmers.
When dealing with mocking lists and iterating them, I always use something like:
@Spy
private List<Object> parts = new ArrayList<>();
I'm aware this question is fairly old by now, and you've most likely fixed it by now, but I'd like to post here as reference for anyone that finds this post while troubleshooting this issue is that this sort of thing won't work if your Anchor tags are in the Index.html. It needs to be in one of the components
To get the numbers after decimal point, you can do this:-
read num1 num2
div=`echo $num1 / $num2 | bc -l`
echo $div
You can click the settings icon on top right corner ...
| More Tools | Developer Tools | Network | Disable cache (while DevTools is open)
For windows, this is F12 or CTRL + SHIFT + I while on mac CMD + SHIFT + I opens up DevTools.
New path for Chrome Update Sept 2018:
Click settings icon on the top right corner ...
| Settings | Preferences | Developer Tools | Network | Disable cache (while DevTools is open)
var checkboxes = document.getElementsByName('location[]');
var vals = "";
for (var i=0, n=checkboxes.length;i<n;i++)
{
if (checkboxes[i].checked)
{
vals += ","+checkboxes[i].value;
}
}
if (vals) vals = vals.substring(1);
Do Ctrl+alt+t
and then:
sudo chmod 777 /opt/lampp/phpmyadmin/config.inc.php
open config.inc.php
test
$cfg['Servers'][$i]['auth_type'] = 'config';
$cfg['Servers'][$i]['user'] = 'root';
$cfg['Servers'][$i]['password'] = '';
save config.inc.php
sudo chmod 644 /opt/lampp/phpmyadmin/config.inc.php
restart the xampp and check phpmyadmin
If it works i think i am glad to help you!!!
If you're using
To get IntelliJ to recognize custom sourceset as test sources root:
plugin {
idea
}
idea {
module {
testSourceDirs = testSourceDirs + sourceSets["intTest"].allJava.srcDirs
testResourceDirs = testResourceDirs + sourceSets["intTest"].resources.srcDirs
}
}
let me as a thank you to the StackOverflow community, share something nice with you, where I have used the above example in Android code for HTTP calls, which now turns MODAL instead of the usual extra thread and the complexities of merging the threads by use of the a bit peculiar threading. (This is working in our app right now - 15 Oct 2020)
public JSONArray genericHttpModal(Context context, final String url, final JSONObject request) {
this.url = url;
genericHttpRequestQueue = Volley.newRequestQueue(context);
class MyJsonReturn {
JSONArray returnJsonArray;
public void set(JSONArray i) {
returnJsonArray = i;
}
public void set(String i) {
try {
returnJsonArray.put(0, i);
} catch (JSONException e) {
e.printStackTrace();
}
}
public JSONArray get() {
return returnJsonArray;
}
}
final MyJsonReturn mymy = new MyJsonReturn();
// Positive Response / HTTP OK.
final Handler handler = new Handler() {
@Override
public void handleMessage(@NonNull Message msg) {
throw new RuntimeException();
}
};
final Response.Listener responseListener = new Response.Listener<String>() {
@Override
public void onResponse(String response) {
try {
mymy.set(new JSONArray(response));
} catch (JSONException e) {
mymy.set("[{\"JSONException:\"" + e.getMessage() + "\"}]");
}
handler.sendMessage(handler.obtainMessage());
}
};
// Negative Response / HTTP NOT OK
final Response.ErrorListener errorListener = new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
result = "fail";
try {
mymy.set(new JSONArray("[{\"JSONException:\"" + result + "\"}]"));
} catch (JSONException e) {
mymy.set("[{\"JSONException:\"" + e.getMessage() + "\"}]");
}
handler.sendMessage(handler.obtainMessage());
}
};
final StringRequest httpRequest = new StringRequest(Request.Method.POST, URL_POINTER + url,
responseListener,
errorListener) {
// Here the mRequestQueue handler will get the parameters for this request here.
// Ref: https://stackoverflow.com/questions/33573803/how-to-send-a-post-request-using-volley-with-string-body#33578202
// Ref: Multi Threaded solution 14 Oct 2020 (David Svarrer) : https://stackoverflow.com/questions/2028697/dialogs-alertdialogs-how-to-block-execution-while-dialog-is-up-net-style (This stackoverflow here)
@Override
protected java.util.Map<String, String> getParams() throws AuthFailureError {
return jsonObjectToMap(request);
}
};
httpRequest.setShouldCache(false); // Elijah: Could work on dropping the cache !!!
genericHttpRequestQueue.add(httpRequest);
try {
Looper.loop();
} catch (RuntimeException re) {
}
return mymy.get();
}
java.net.URLEncoder.encode(finalPartOfString, "utf-8");
This will URL-encode the string.
finalPartOfString
is the part after the last slash - in your case, the name of the song, as it seems.
Just return true
instead?
The return value from the onClick
code is what determines whether the link's inherent clicked action is processed or not - returning false
means that it isn't processed, but if you return true
then the browser will proceed to process it after your function returns and go to the proper anchor.
For checking existence one can also use (works for both, files and folders):
Not Dir(DirFile, vbDirectory) = vbNullString
The result is True
if a file or a directory exists.
Example:
If Not Dir("C:\Temp\test.xlsx", vbDirectory) = vbNullString Then MsgBox "exists" Else MsgBox "does not exist" End If
If you want to get the DATE and not DATETIME format:
df["id_date"] = pd.to_datetime(df["id_date"]).dt.date
The main benefit of "".equals(s)
is you don't need the null check (equals
will check its argument and return false
if it's null), which you seem to not care about. If you're not worried about s
being null (or are otherwise checking for it), I would definitely use s.isEmpty()
; it shows exactly what you're checking, you care whether or not s
is empty, not whether it equals the empty string
The process can differ depending on where and how the video is being hosted. Knowing that can help to answer the question in more detail.
As an example; this is how you can download videos with blob links on Vimeo.
If username
or password
has the @
character, then use it like this:
mongoose
.connect(
'DB_url',
{ user: '@dmin', pass: 'p@ssword', useNewUrlParser: true }
)
.then(() => console.log('Connected to MongoDB'))
.catch(err => console.log('Could not connect to MongoDB', err));
In .Net through version 4 this can be done the same way as for SQL Server Stored Procs but note that you need:
using System.Data.OracleClient;
There are some system requirements here that you should verify are OK in your scenario.
Microsoft is deprecating this namespace as of .Net 4 so third-party providers will be needed in the future. With this in mind, you may be better off using Oracle Data Provider for .Net (ODP.NET) from the word go - this has optimizations that are not in the Microsoft classes. There are other third-party options, but Oracle has a strong vested interest in keeping .Net developers on board so theirs should be good.
Have you tried to Remove hangouts extension in Google Chrome? because it forces chrome to keep running even you close all the windows.
I was also facing the problem but it resolved now.
As this was already answered, I just wanted to point out the differences in approaches on getting the constructor of an object in JavaScript.
There is a difference between the constructor and the actual object/class name. If the following adds to the complexity of your decision then maybe you're looking for instanceof
. Or maybe you should ask yourself "Why am I doing this? Is this really what I am trying to solve?"
Notes:
The obj.constructor.name
is not available on older browsers.
Matching (\w+)
should satisfy ES6 style classes.
Code:
var what = function(obj) {
return obj.toString().match(/ (\w+)/)[1];
};
var p;
// Normal obj with constructor.
function Entity() {}
p = new Entity();
console.log("constructor:", what(p.constructor), "name:", p.constructor.name , "class:", what(p));
// Obj with prototype overriden.
function Player() { console.warn('Player constructor called.'); }
Player.prototype = new Entity();
p = new Player();
console.log("constructor:", what(p.constructor), "name:", p.constructor.name, "class:", what(p));
// Obj with constructor property overriden.
function OtherPlayer() { console.warn('OtherPlayer constructor called.'); }
OtherPlayer.constructor = new Player();
p = new OtherPlayer();
console.log("constructor:", what(p.constructor), "name:", p.constructor.name, "class:", what(p));
// Anonymous function obj.
p = new Function("");
console.log("constructor:", what(p.constructor), "name:", p.constructor.name, "class:", what(p));
// No constructor here.
p = {};
console.log("constructor:", what(p.constructor), "name:", p.constructor.name, "class:", what(p));
// ES6 class.
class NPC {
constructor() {
}
}
p = new NPC();
console.log("constructor:", what(p.constructor), "name:", p.constructor.name , "class:", what(p));
// ES6 class extended
class Boss extends NPC {
constructor() {
super();
}
}
p = new Boss();
console.log("constructor:", what(p.constructor), "name:", p.constructor.name , "class:", what(p));
Result:
http://jsbin.com/ubalax/1/edit .You can see the results here
body {
position: relative;
float: left;
height: 3000px;
width: 100%;
}
body div {
position: absolute;
height: 100%;
width: 100%;
top:0;
left:0;
background-color: yellow;
}
If it's just for viewing data, I use simple foreach or even aspRepeater. For editing I build specialized views and actions. Didn't like webforms GridView inline edit capabilities anyway, this is kinda much clearer and better - one view for viewing and another for edit/new.
I think you're making this a bit more complicated than it needs to be.
SELECT
ProductID,
SUM(IF(PaymentMethod = 'Cash', Amount, 0)) AS 'Cash',
-- snip
SUM(Amount) AS Total
FROM
Payments
WHERE
SaleDate = '2012-02-10'
GROUP BY
ProductID
It worked using PSCP. Instructions:
set PATH=<path to the pscp.exe file>
pscp
use the following command to copy file form remote server to the local system
pscp [options] [user@]host:source target
So to copy the file /etc/hosts
from the server example.com
as user fred
to the file
c:\temp\example-hosts.txt
, you would type:
pscp [email protected]:/etc/hosts c:\temp\example-hosts.txt
Use this as a template
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
-- =============================================
-- Author: <Author,,Name>
-- Create date: <Create Date,,>
-- Description: <Description,,>
-- =============================================
CREATE FUNCTION <Table_Function_Name, sysname, FunctionName>
(
-- Add the parameters for the function here
<@param1, sysname, @p1> <data_type_for_param1, , int>,
<@param2, sysname, @p2> <data_type_for_param2, , char>
)
RETURNS
<@Table_Variable_Name, sysname, @Table_Var> TABLE
(
-- Add the column definitions for the TABLE variable here
<Column_1, sysname, c1> <Data_Type_For_Column1, , int>,
<Column_2, sysname, c2> <Data_Type_For_Column2, , int>
)
AS
BEGIN
-- Fill the table variable with the rows for your result set
RETURN
END
GO
That will define your function. Then you would just use it as any other table:
Select * from MyFunction(Param1, Param2, etc.)
Just enable the "Build Active Architecture Only" option
in PROJECT >> Build Settings >> Build Active Architecture Only >> Yes
remember to check if they are also enabled in each target
Inside of your loop, you have the key, which you can use to retrieve the value from the Map
:
for (String key: mss1.keySet()) {
System.out.println(key + ": " + mss1.get(key));
}
Here's a full example that shows how to modify the fill color of an svg referenced via <embed>, <object> and <iframe>.
How about?
<?php
$queried_post = get_page_by_path('my_slug',OBJECT,'post');
?>
Your indexes probably contains duplicated values.
import pandas as pd
T1_INDEX = [
0,
1, # <= !!! if I write e.g.: "0" here then it fails
0.2,
]
T1_COLUMNS = [
'A', 'B', 'C', 'D'
]
T1 = [
[1.0, 1.1, 1.2, 1.3],
[2.0, 2.1, 2.2, 2.3],
[3.0, 3.1, 3.2, 3.3],
]
T2_INDEX = [
1.2,
2.11,
]
T2_COLUMNS = [
'D', 'E', 'F',
]
T2 = [
[54.0, 5324.1, 3234.2],
[55.0, 14.5324, 2324.2],
# [3.0, 3.1, 3.2],
]
df1 = pd.DataFrame(T1, columns=T1_COLUMNS, index=T1_INDEX)
df2 = pd.DataFrame(T2, columns=T2_COLUMNS, index=T2_INDEX)
print(pd.concat([pd.DataFrame({})] + [df2, df1], axis=1))
for example I faced this in express node.js when trying to create route for paths not starting with /internal
app.get(`\/(?!internal).*`, (req, res)=>{
and after long trying it just worked when passing it as a RegExp Object using new RegExp()
app.get(new RegExp("\/(?!internal).*"), (req, res)=>{
this may help if you are getting this common issue in routing
An alternative is to use the maven shade plugin to build an uber-jar
.
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version> Your Version Here </version>
<configuration>
<!-- put your configurations here -->
</configuration>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
</execution>
</executions>
</plugin>
Only one thing more: when you´re using the "crasis variable assignment" you need to use double cotes too AND you do not need to use the "input" word!:
valInput = $(`[name="${inputNameHere}"]`).val();
Finally it works for me.
private VideoView videoView;
videoView = (VideoView) findViewById(R.id.videoView);
Uri video = Uri.parse("http://www.servername.com/projects/projectname/videos/1361439400.mp4");
videoView.setVideoURI(video);
videoView.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
@Override
public void onPrepared(MediaPlayer mp) {
mp.setLooping(true);
videoView.start();
}
});
Hope this would help others.
A much simpler solution:
<script language="javascript" src="http://maps.google.com/maps/api/js?v=3.2&sensor=false"></script>
and later in the code:
var online;
// check whether this function works (online only)
try {
var x = google.maps.MapTypeId.TERRAIN;
online = true;
} catch (e) {
online = false;
}
console.log(online);
When not online the google script will not be loaded thus resulting in an error where an exception will be thrown.
SQL is implemented as if a query was executed in the following order:
For most relational database systems, this order explains which names (columns or aliases) are valid because they must have been introduced in a previous step.
So in Oracle and SQL Server, you cannot use a term in the GROUP BY clause that you define in the SELECT clause because the GROUP BY is executed before the SELECT clause.
There are exceptions though: MySQL and Postgres seem to have additional smartness that allows it.
How about something like this...
Dim rs As RecordSet
Set rs = Currentdb.OpenRecordSet("SELECT PictureLocation, ID FROM MyAccessTable;")
Do While Not rs.EOF
Debug.Print rs("PictureLocation") & " - " & rs("ID")
rs.MoveNext
Loop
I got Jupyter notebook running in Windows 10. I found the easiest way to accomplish this task without relying upon a distro like Anaconda was to use Cygwin.
In Cygwin install python2, python2-devel, python2-numpy, python2-pip, tcl, tcl-devel, (I have included a image below of all packages I installed) and any other python packages you want that are available. This is by far the easiest option.
Then run this command to just install jupyter notebook:
python -m pip install jupyter
Below is the actual commands I ran to add more libraries just in case others need this list too:
python -m pip install scipy
python -m pip install scikit-learn
python -m pip install sklearn
python -m pip install pandas
python -m pip install matplotlib
python -m pip install jupyter
If any of the above commands fail do not worry the solution is pretty simple most of the time. What you do is look at the build failure for whatever missing package / library.
Say it is showing a missing pyzmq then close Cygwin, re-open the installer, get to the package list screen, show "full" for all, then search for the name like zmq and install those libraries and re-try the above commands.
Using this approach it was fairly simple to eventually work through all the missing dependencies successfully.
Once everything is installed then run in Cygwin goto the folder you want to be the "root" for the notebook ui tree and type:
jupyter notebook
This will start up the notebook and show some output like below:
$ jupyter notebook
[I 19:05:30.459 NotebookApp] Serving notebooks from local directory:
[I 19:05:30.459 NotebookApp] 0 active kernels
[I 19:05:30.459 NotebookApp] The Jupyter Notebook is running at:
[I 19:05:30.459 NotebookApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).
Copy/paste this URL into your browser when you connect for the first time, to login with a token:
http://localhost:8888/?token=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Range("A1").value = Environ("Username")
This is better than Application.Username
, which doesn't always supply the Windows username. Thanks to Kyle for pointing this out.
Application Username
is the name of the User set in Excel > Tools > Options Environ("Username")
is the name you registered for Windows; see Control Panel >SystemFor me this perfectly triggers slide event on UI Slider :
hs=$('#height_slider').slider();
hs.slider('option', 'value',h);
hs.slider('option','slide')
.call(hs,null,{ handle: $('.ui-slider-handle', hs), value: h });
Don't forget to set value by hs.slider('option', 'value',h);
before the trigger. Else slider handler will not be in sync with value.
One thing to note here is that h
is index/position (not value) in case you are using html select
.
There's no (safe) way to pause execution. You can, however, do something like this using setTimeout:
function writeNext(i)
{
document.write(i);
if(i == 5)
return;
setTimeout(function()
{
writeNext(i + 1);
}, 2000);
}
writeNext(1);
Using a null reference as the first operand to instanceof
returns false
.
Restarting Testing device fix the issue for me.
In bootstrap 3, this works well for me:
.btn-link.btn-anchor {
outline: none !important;
padding: 0;
border: 0;
vertical-align: baseline;
}
Used like:
<button type="button" class="btn-link btn-anchor">My Button</button>
IIRC Canvas is a raster style bitmap. it wont be zoomable because there's no stored information to zoom to.
Your best bet is to keep two copies in memory (zoomed and non) and swap them on mouse click.
In Android Studio 3.4.1, you can use the search feature of Android Studio to find "Device File Explorer" and then go to the /data/data/package_name/database directory of your emulator.
its on you ul
in the file http://ratest4.com/wp-content/themes/HarnettArts-BP-2010/style.css on line 252
add this to your css
ul{
list-style:none;
}
The earlier answer works, but the solution can actually be simpler. Looping through the configured networks list is not required as you get the network id when you add the network through the WifiManager.
So the complete, simplified solution would look something like this:
WifiConfiguration wifiConfig = new WifiConfiguration();
wifiConfig.SSID = String.format("\"%s\"", ssid);
wifiConfig.preSharedKey = String.format("\"%s\"", key);
WifiManager wifiManager = (WifiManager)getSystemService(WIFI_SERVICE);
//remember id
int netId = wifiManager.addNetwork(wifiConfig);
wifiManager.disconnect();
wifiManager.enableNetwork(netId, true);
wifiManager.reconnect();
I did not find my solution here, maybe someone will be useful:
.child-with-overflowed-text{
word-wrap: break-all;
}
Good luck!
Put this in ~/.zshrc
:
autoload -U colors && colors
PS1="%{$fg[red]%}%n%{$reset_color%}@%{$fg[blue]%}%m %{$fg[yellow]%}%~ %{$reset_color%}%% "
Supported Colors:
red
, blue
, green
, cyan
, yellow
, magenta
, black
, & white
(from this answer) although different computers may have different valid options.
Surround color codes (and any other non-printable chars) with %{....%}
. This is for the text wrapping to work correctly.
Additionally, here is how you can get this to work with the directory-trimming from here.
PS1="%{$fg[red]%}%n%{$reset_color%}@%{$fg[blue]%}%m %{$fg[yellow]%}%(5~|%-1~/.../%3~|%4~) %{$reset_color%}%% "
Just to continue to all the answers that were given here, especially @James Lanes
the size of the integer type can be expressed by this formula:
total range = (2 ^ bit system)
lower limit = -(2 ^ bit system)*0.5 upper limit = ((2 ^ bit system)*0.5) - 1
with '0x' prefix, you might also use eval function
For example
>>a='0xff'
>>eval(a)
255
In my case, you need to convert the column(you think this column is numeric, but actually not) to numeric
geom_segment(data=tmpp,
aes(x=start_pos,
y=lib.complexity,
xend=end_pos,
yend=lib.complexity)
)
# to
geom_segment(data=tmpp,
aes(x=as.numeric(start_pos),
y=as.numeric(lib.complexity),
xend=as.numeric(end_pos),
yend=as.numeric(lib.complexity))
)
-
WHERE SUBSTR('Hello world', -4)
There is of course some apache log files. Search in your apache configuration files for 'Log' keyword, you'll certainly find plenty of them. Depending on your OS and installation places may vary (in a Typical Linux server it would be /var/log/apache2/[access|error].log).
Having a 503 error in Apache usually means the proxied page/service is not available. I assume you're using tomcat and that means tomcat is either not responding to apache (timeout?) or not even available (down? crashed?). So chances are that it's a configuration error in the way to connect apache and tomcat or an application inside tomcat that is not even sending a response for apache.
Sometimes, in production servers, it can as well be that you get too much traffic for the tomcat server, apache handle more request than the proxyied service (tomcat) can accept so the backend became unavailable.
It seem like your Resort
method doesn't declare a compareTo
method. This method typically belongs to the Comparable
interface. Make sure your class implements it.
Additionally, the compareTo
method is typically implemented as accepting an argument of the same type as the object the method gets invoked on. As such, you shouldn't be passing a String
argument, but rather a Resort
.
Alternatively, you can compare the names of the resorts. For example
if (resortList[mid].getResortName().compareTo(resortName)>0)
OnClientClick="SomeMethod()"
event of that BUTTON, it return by default "true
" so after that function it do postback
for solution use
//use this code in BUTTON ==> OnClientClick="return SomeMethod();"
//and your function like this
<script type="text/javascript">
function SomeMethod(){
// put your code here
return false;
}
</script>
For those, who wonder how it goes in VS.
MSVC 2015 Update 1, cl.exe version 19.00.24215.1:
#include <iostream>
template<typename X, typename Y>
struct A
{
template<typename Z>
static void f()
{
std::cout << "from A::f():" << std::endl
<< __FUNCTION__ << std::endl
<< __func__ << std::endl
<< __FUNCSIG__ << std::endl;
}
};
void main()
{
std::cout << "from main():" << std::endl
<< __FUNCTION__ << std::endl
<< __func__ << std::endl
<< __FUNCSIG__ << std::endl << std::endl;
A<int, float>::f<bool>();
}
output:
from main(): main main int __cdecl main(void) from A::f(): A<int,float>::f f void __cdecl A<int,float>::f<bool>(void)
Using of __PRETTY_FUNCTION__
triggers undeclared identifier error, as expected.
I would use a color wheel and given a random position you could add the golden angle (137,5 degrees)
http://en.wikipedia.org/wiki/Golden_angle
in order to get different colours each time that do not overlap.
Adjusting the brightness for the color wheel you could get also different bright/dark color combinations.
I've found this blog post that explains really well the problem and the solution using the golden ratio.
http://martin.ankerl.com/2009/12/09/how-to-create-random-colors-programmatically/
UPDATE: I've just found this other approach:
It's called RYB(red, yellow, blue) method and it's described in this paper:
http://threekings.tk/mirror/ryb_TR.pdf
as "Paint Inspired Color Compositing".
The algorithm generates the colors and each new color is chosen to maximize its euclidian distance to the previously selected ones.
Here you can find a a good implementation in javascript:
http://afriggeri.github.com/RYB/
UPDATE 2:
The Sciences Po Medialb have just released a tool called "I want Hue" that generate color palettes for data scientists. Using different color spaces and generating the palettes by using k-means clustering or force vectors ( repulsion graphs) The results from those methods are very good, they show the theory and an implementation in their web page.
First error: You're casting a ClientThread
as a String
for some reason.
Second error: You're not calling remove
on your List
.
Is is homework? If so, you might want to use the tag.
if(sb.length() > 0){
sb.deleteCharAt(sb.length() - 1);
}
It looks like you're confused by the working of slices and the string storage format, which is different from what you have in C.
len
operation : there is no need to count1
after slicing by adding an empty string.To remove the last char (if it's a one byte char), simply do
inputFmt:=input[:len(input)-1]
I got this error after deleting Xcode. I fixed it by resetting the command line tools path with sudo xcode-select -r
.
Before:
navin@Radiant ~$ /usr/bin/clang
xcrun: error: active developer path ("/Applications/Xcode.app/Contents/Developer") does not exist
Use `sudo xcode-select --switch path/to/Xcode.app` to specify the Xcode that you wish to use for command line developer tools, or use `xcode-select --install` to install the standalone command line developer tools.
See `man xcode-select` for more details.
navin@Radiant ~$ xcode-select --install
xcode-select: error: command line tools are already installed, use "Software Update" to install updates
After:
navin@Radiant ~$ /usr/bin/clang
clang: error: no input files
To set a text box for password input:
textBox1.PasswordChar = '*';
you can also change this property in design time by editing properties of the text box.
To show if "Capslock is ON":
using System;
using System.Windows.Forms;
//...
if (Control.IsKeyLocked(Keys.CapsLock)) {
MessageBox.Show("The Caps Lock key is ON.");
}
This is not a generic solution, but some databases allow you to use regular expressions to specify the columns.
For instance, in the case of Hive, the following query selects all columns except ds and hr:
SELECT `(ds|hr)?+.+` FROM sales
if you want to use "System.Data.Objects.EntityFunctions"
use "System.Data.Entity.DbFunctions" in EF 6.1+
The first approach is building separate Django and React apps. Django will be responsible for serving the API built using Django REST framework and React will consume these APIs using the Axios client or the browser's fetch API. You'll need to have two servers, both in development and production, one for Django(REST API) and the other for React (to serve static files).
The second approach is different the frontend and backend apps will be coupled. Basically you'll use Django to both serve the React frontend and to expose the REST API. So you'll need to integrate React and Webpack with Django, these are the steps that you can follow to do that
First generate your Django project then inside this project directory generate your React application using the React CLI
For Django project install django-webpack-loader with pip:
pip install django-webpack-loader
Next add the app to installed apps and configure it in settings.py
by adding the following object
WEBPACK_LOADER = {
'DEFAULT': {
'BUNDLE_DIR_NAME': '',
'STATS_FILE': os.path.join(BASE_DIR, 'webpack-stats.json'),
}
}
Then add a Django template that will be used to mount the React application and will be served by Django
{ % load render_bundle from webpack_loader % }
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width" />
<title>Django + React </title>
</head>
<body>
<div id="root">
This is where React will be mounted
</div>
{ % render_bundle 'main' % }
</body>
</html>
Then add an URL in urls.py
to serve this template
from django.conf.urls import url
from django.contrib import admin
from django.views.generic import TemplateView
urlpatterns = [
url(r'^', TemplateView.as_view(template_name="main.html")),
]
If you start both the Django and React servers at this point you'll get a Django error saying the webpack-stats.json
doesn't exist. So next you need to make your React application able to generate the stats file.
Go ahead and navigate inside your React app then install webpack-bundle-tracker
npm install webpack-bundle-tracker --save
Then eject your Webpack configuration and go to config/webpack.config.dev.js
then add
var BundleTracker = require('webpack-bundle-tracker');
//...
module.exports = {
plugins: [
new BundleTracker({path: "../", filename: 'webpack-stats.json'}),
]
}
This add BundleTracker plugin to Webpack and instruct it to generate webpack-stats.json
in the parent folder.
Make sure also to do the same in config/webpack.config.prod.js
for production.
Now if you re-run your React server the webpack-stats.json
will be generated and Django will be able to consume it to find information about the Webpack bundles generated by React dev server.
There are some other things to. You can find more information from this tutorial.
I don't think it's necessary to use semi-quotes around the variables, try:
curl -XPOST 'http://localhost/Service' -d "path=%2fxyz%2fpqr%2ftest%2f&fileName=1.doc"
%2f
is the escape code for a /
.
http://www.december.com/html/spec/esccodes.html
Also, do you need to specify a port? ( just checking :) )
It is likely a scope issue. Try the following instead:
addToBasket: function(){
item = this.photo;
this.$http.post('/api/buy/addToBasket', item);
this.basketAddSuccess = true;
var self = this;
setTimeout(function(){
self.basketAddSuccess = false;
}, 2000);
}
As I tussled with this, TryParse in 3.5 does have NumberStyles: The following code should also do the trick without Regex to ignore thousands seperator.
double.TryParse(length, NumberStyles.AllowDecimalPoint,CultureInfo.CurrentUICulture, out lengthD))
Not relevant to the original question asked but confirming that TryParse() indeed is a good option.
You can also get specific index using
curl -X GET "localhost:9200/<INDEX_NAME>"
e.g. curl -X GET "localhost:9200/twitter"
You may get output like:
{
"twitter": {
"aliases": {
},
"mappings": {
},
"settings": {
"index": {
"creation_date": "1540797250479",
"number_of_shards": "3",
"number_of_replicas": "2",
"uuid": "CHYecky8Q-ijsoJbpXP95w",
"version": {
"created": "6040299"
},
"provided_name": "twitter"
}
}
}
}
For more info
https://www.elastic.co/guide/en/elasticsearch/reference/current/indices-get-index.html
I have created little function as workaround solution (inspired by @JohnCulviner plugin):
// creates iframe and form in it with hidden field,
// then submit form with provided data
// url - form url
// data - data to form field
// input_name - form hidden input name
function ajax_download(url, data, input_name) {
var $iframe,
iframe_doc,
iframe_html;
if (($iframe = $('#download_iframe')).length === 0) {
$iframe = $("<iframe id='download_iframe'" +
" style='display: none' src='about:blank'></iframe>"
).appendTo("body");
}
iframe_doc = $iframe[0].contentWindow || $iframe[0].contentDocument;
if (iframe_doc.document) {
iframe_doc = iframe_doc.document;
}
iframe_html = "<html><head></head><body><form method='POST' action='" +
url +"'>" +
"<input type=hidden name='" + input_name + "' value='" +
JSON.stringify(data) +"'/></form>" +
"</body></html>";
iframe_doc.open();
iframe_doc.write(iframe_html);
$(iframe_doc).find('form').submit();
}
Demo with click event:
$('#someid').on('click', function() {
ajax_download('/download.action', {'para1': 1, 'para2': 2}, 'dataname');
});
Or you can try transform
:
newbob <- transform(bob, phenotype = as.character(phenotype))
Just be sure to put every factor you'd like to convert to character.
Or you can do something like this and kill all the pests with one blow:
newbob_char <- as.data.frame(lapply(bob[sapply(bob, is.factor)], as.character), stringsAsFactors = FALSE)
newbob_rest <- bob[!(sapply(bob, is.factor))]
newbob <- cbind(newbob_char, newbob_rest)
It's not good idea to shove the data in code like this, I could do the sapply
part separately (actually, it's much easier to do it like that), but you get the point... I haven't checked the code, 'cause I'm not at home, so I hope it works! =)
This approach, however, has a downside... you must reorganize columns afterwards, while with transform
you can do whatever you like, but at cost of "pedestrian-style-code-writting"...
So there... =)
If the effect you want is to center in the center of the screen no matter where you've scrolled to, it's even simpler than that:
In your CSS use (for example)
div.centered{
width: 100px;
height: 50px;
position:fixed;
top: calc(50% - 25px); // half of width
left: calc(50% - 50px); // half of height
}
No JS required.
Swamibebop's solution works, but by taking advantage of table.*
syntax, we can avoid repeating the column names of the inner select
and get a simpler/shorter result:
SELECT @r := @r+1 ,
z.*
FROM(/* your original select statement goes in here */)z,
(SELECT @r:=0)y;
So that will give you:
SELECT @r := @r+1 ,
z.*
FROM(
SELECT itemID,
count(*) AS ordercount
FROM orders
GROUP BY itemID
ORDER BY ordercount DESC
)z,
(SELECT @r:=0)y;
To change the default "sub-menu" class name, there is simple way. You can just change it in wordpress file.
location : www/project_name/wp-includes/nav-menu-template.php.
open this file and at line number 49, change the name of sub-menu class with your custom class.
Or you can also add your custom class next to sub-menu.
Done.
It worked for me.I used wordpress-4.4.1.
<style type="text/css">
body {background:none transparent;
}
</style>
that might work (if you put in the iframe) along with
<iframe src="stuff.htm" allowtransparency="true">
For your stated desire to "check if a property exists" you can directly use Lo-Dash's has
.
var exists = _.has(myObject, propertyNameToCheck);
You cannot cast an int to a char* to get a string. Try this:
std::ostringstream sstream;
sstream << "select logged from login where id = " << ClientID;
std::string query = sstream.str();
I tried the accepted answer, it did not work.
However the simple way to do it is below:-
<option value="1" <c:if test="${item.quantity == 1}"> <c:out value= "selected=selected"/</c:if>>1</option>
<option value="2" <c:if test="${item.quantity == 2}"> <c:out value= "selected=selected"/</c:if>>2</option>
<option value="3" <c:if test="${item.quantity == 3}"> <c:out value= "selected=selected"/</c:if>>3</option>
Enjoy!!
For almost all cases the normal list is the right choice. The arrays module is more like a thin wrapper over C arrays, which give you kind of strongly typed containers (see docs), with access to more C-like types such as signed/unsigned short or double, which are not part of the built-in types. I'd say use the arrays module only if you really need it, in all other cases stick with lists.
To change the text AB
into A \r B
in a table cell, put this into the cell position: \makecell{A \\ B}
.
Before doing that, you also need to include package makecell
.
Assuming you're the administrator of the machine, Ubuntu has granted you the right to sudo to run any command as any user.
Also assuming you did not restrict the rights in the pg_hba.conf
file (in the /etc/postgresql/9.1/main
directory), it should contain this line as the first rule:
# Database administrative login by Unix domain socket
local all postgres peer
(About the file location: 9.1
is the major postgres version and main
the name of your "cluster". It will differ if using a newer version of postgres or non-default names. Use the pg_lsclusters
command to obtain this information for your version/system).
Anyway, if the pg_hba.conf
file does not have that line, edit the file, add it, and reload the service with sudo service postgresql reload
.
Then you should be able to log in with psql
as the postgres superuser with this shell command:
sudo -u postgres psql
Once inside psql, issue the SQL command:
ALTER USER postgres PASSWORD 'newpassword';
In this command, postgres
is the name of a superuser. If the user whose password is forgotten was ritesh
, the command would be:
ALTER USER ritesh PASSWORD 'newpassword';
References: PostgreSQL 9.1.13 Documentation, Chapter 19. Client Authentication
Keep in mind that you need to type postgres with a single S at the end
If leaving the password in clear text in the history of commands or the server log is a problem, psql provides an interactive meta-command to avoid that, as an alternative to ALTER USER ... PASSWORD
:
\password username
It asks for the password with a double blind input, then hashes it according to the password_encryption
setting and issue the ALTER USER
command to the server with the hashed version of the password, instead of the clear text version.
To replace a string in multiple files you can use:
grep -rl string1 somedir/ | xargs sed -i 's/string1/string2/g'
E.g.
grep -rl 'windows' ./ | xargs sed -i 's/windows/linux/g'
DateTime unixEpoch = DateTime.ParseExact("1970-01-01", "yyyy-MM-dd", System.Globalization.CultureInfo.InvariantCulture);
DateTime convertedTime = unixEpoch.AddMilliseconds(unixTimeInMillisconds);
Of course, one can make unixEpoch
a global static, so it only needs to appear once in your project, and one can use AddSeconds
if the UNIX time is in seconds.
To go the other way:
double unixTimeInMilliseconds = timeToConvert.Subtract(unixEpoch).TotalMilliseconds;
Truncate to Int64 and/or use TotalSeconds
as needed.
In order to use a CLR 2.0 mixed mode assembly, you need to modify your App.Config file to include:
<?xml version="1.0"?>
<configuration>
<startup useLegacyV2RuntimeActivationPolicy="true">
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/>
</startup>
</configuration>
The key is the useLegacyV2RuntimeActivationPolicy
flag. This causes the CLR to use the latest version (4.0) to load your mixed mode assembly. Without this, it will not work.
Note that this only matters for mixed mode (C++/CLI) assemblies. You can load all managed CLR 2 assemblies without specifying this in app.config
.
An alternative to the custom filter is to create an extension method to serialize any object to JSON.
public static class ObjectExtensions
{
/// <summary>Serializes the object to a JSON string.</summary>
/// <returns>A JSON string representation of the object.</returns>
public static string ToJson(this object value)
{
var settings = new JsonSerializerSettings
{
ContractResolver = new CamelCasePropertyNamesContractResolver(),
Converters = new List<JsonConverter> { new StringEnumConverter() }
};
return JsonConvert.SerializeObject(value, settings);
}
}
Then call it when returning from the controller action.
return Content(person.ToJson(), "application/json");
I have reproduced the issue in my system,
postgres=# alter user my-sys with password 'pass11';
ERROR: syntax error at or near "-"
LINE 1: alter user my-sys with password 'pass11';
^
Here is the issue,
psql is asking for input and you have given again the alter query see postgres-#
That's why it's giving error at alter
postgres-# alter user "my-sys" with password 'pass11';
ERROR: syntax error at or near "alter"
LINE 2: alter user "my-sys" with password 'pass11';
^
Solution is as simple as the error,
postgres=# alter user "my-sys" with password 'pass11';
ALTER ROLE
To get only uploaded file Name use this,
fake_path=document.getElementById('FileUpload1').value
alert(fake_path.split("\\").pop())
FileUpload1
value contains fake path, that you probably don't want, to avoid that use split and pop last element from your file.
On the outermost level, a JSON object starts with a {
and end with a }
.
Sample data:
{
"cars": {
"Nissan": [
{"model":"Sentra", "doors":4},
{"model":"Maxima", "doors":4},
{"model":"Skyline", "doors":2}
],
"Ford": [
{"model":"Taurus", "doors":4},
{"model":"Escort", "doors":4}
]
}
}
If the JSON is assigned to a variable called data, then accessing it would be like the following:
data.cars['Nissan'][0].model // Sentra
data.cars['Nissan'][1].model // Maxima
data.cars['Nissan'][2].doors // 2
for (var make in data.cars) {
for (var i = 0; i < data.cars[make].length; i++) {
var model = data.cars[make][i].model;
var doors = data.cars[make][i].doors;
alert(make + ', ' + model + ', ' + doors);
}
}
Another approach (using an associative array for car models rather than an indexed array):
{
"cars": {
"Nissan": {
"Sentra": {"doors":4, "transmission":"automatic"},
"Maxima": {"doors":4, "transmission":"automatic"}
},
"Ford": {
"Taurus": {"doors":4, "transmission":"automatic"},
"Escort": {"doors":4, "transmission":"automatic"}
}
}
}
data.cars['Nissan']['Sentra'].doors // 4
data.cars['Nissan']['Maxima'].doors // 4
data.cars['Nissan']['Maxima'].transmission // automatic
for (var make in data.cars) {
for (var model in data.cars[make]) {
var doors = data.cars[make][model].doors;
alert(make + ', ' + model + ', ' + doors);
}
}
Edit:
Correction: A JSON object starts with {
and ends with }
, but it's also valid to have a JSON array (on the outermost level), that starts with [
and ends with ]
.
Also, significant syntax errors in the original JSON data have been corrected: All key names in a JSON object must be in double quotes, and all string values in a JSON object or a JSON array must be in double quotes as well.
See:
This is still not fixed in Xcode Version 8.0 beta 2 (8S162m) for me and extra logs are also appearing in the Xcode console
** EDIT 8/1/16: This has been acknowledged in the release notes for Xcode 8 Beta 4 (8S188o) as an issues still persisting.
Known Issues in Xcode 8 beta 4 – IDE
Debugging
• Xcode Debug Console shows extra logging from system frameworks when debugging applications in the Simulator. (27331147, 26652255)
Presumably this will be resolved by the GM release. Until then patience and although not ideal but a workaround I'm using is below...
Similar to the previous answer I am having to:
prefix my print logs with some kind of special character (eg * or ^ or ! etc etc)
Then use the search box on the bottom right of the console pane to filter my console logs by inputing my chosen special character to get the console to display my print logs as intended
I would query the information_schema - this has views that are much more readable than the underlying tables.
SELECT *
FROM INFORMATION_SCHEMA.COLUMNS
WHERE COLUMN_NAME LIKE '%create%'
It's as easy as in your Visual studio.
Rule #1 of security for programmers: Don't roll your own
Unless you are yourself a security expert and/or cryptographer, always use a well-designed, well-tested, and mature security platform, framework, or library to do the work for you. These things have spent years being thought out, patched, updated, and examined by experts and hackers alike. You want to gain those advantages, not dismiss them by trying to reinvent the wheel.
Now, that's not to say you don't need to learn anything about security. You certainly need to know enough to understand what you're doing and make sure you're using the tools correctly. However, if you ever find yourself about to start writing your own cryptography algorithm, authentication system, input sanitizer, etc, stop, take a step back, and remember rule #1.
You could use HTML5 for this:
<link rel="import" href="/path/to/file.html">
Update – July 2020: This feature is no longer supported by most major browsers, and generally considered obsolete. See caniuse for the list of browsers which do still support it.
Just go to File > Settings > Languages & Frameworks > Dart
Click on check box Enable Dart Support for project 'projectName' Paste the Dart SDK path.
This is how you get Dart SDK path, follow the given steps copy the Dart SDK Path, which is in Flutter SDK, Go to location where your Flutter SDK Situated, then,
Flutter/bin/cache/dart-sdk , till dart-sdk, copy the path and paste it.
sudo ./scriptname
sudo bash will basically switch you over to running a shell as root, although it's probably best to stay as su as little as possible.
I know I'm a bit late, incase the above answers didn't work, I recommend checking the logs in elasticsearch terminal. I found out that the error message says that i need to update my version from 5.0.0-rc1
to 6.8.0
, i resolved it by updating my maven dependencies to:
<dependency>
<groupId>org.elasticsearch</groupId>
<artifactId>elasticsearch</artifactId>
<version>6.8.0</version>
</dependency>
<dependency>
<groupId>org.elasticsearch.client</groupId>
<artifactId>transport</artifactId>
<version>6.8.0</version>
</dependency>
This changes my code as well, since InetSocketTransportAddress
is deprecated. I have to change it to TransportAddress
TransportClient client = new PreBuiltTransportClient(Settings.EMPTY)
.addTransportAddress(new TransportAddress(InetAddress.getByName(host), port));
And you also need to add this to your config/elasticsearch.yml file (use your host address)
transport.host: localhost
The model presents a placeholder to hold the information you want to display on the view. It could be a string, which is in your above example, or it could be an object containing bunch of properties.
Example 1
If you have...
return new ModelAndView("welcomePage","WelcomeMessage","Welcome!");
... then in your jsp, to display the message, you will do:-
Hello Stranger! ${WelcomeMessage} // displays Hello Stranger! Welcome!
Example 2
If you have...
MyBean bean = new MyBean();
bean.setName("Mike!");
bean.setMessage("Meow!");
return new ModelAndView("welcomePage","model",bean);
... then in your jsp, you can do:-
Hello ${model.name}! {model.message} // displays Hello Mike! Meow!
after looking for a similar solution and not finding anything flexible enough, I decided to write my own function for it. It allows you to have as many bars per group as you wish and specify both the width of a group as well as the individual widths of the bars within the groups.
Enjoy:
from matplotlib import pyplot as plt
def bar_plot(ax, data, colors=None, total_width=0.8, single_width=1, legend=True):
"""Draws a bar plot with multiple bars per data point.
Parameters
----------
ax : matplotlib.pyplot.axis
The axis we want to draw our plot on.
data: dictionary
A dictionary containing the data we want to plot. Keys are the names of the
data, the items is a list of the values.
Example:
data = {
"x":[1,2,3],
"y":[1,2,3],
"z":[1,2,3],
}
colors : array-like, optional
A list of colors which are used for the bars. If None, the colors
will be the standard matplotlib color cyle. (default: None)
total_width : float, optional, default: 0.8
The width of a bar group. 0.8 means that 80% of the x-axis is covered
by bars and 20% will be spaces between the bars.
single_width: float, optional, default: 1
The relative width of a single bar within a group. 1 means the bars
will touch eachother within a group, values less than 1 will make
these bars thinner.
legend: bool, optional, default: True
If this is set to true, a legend will be added to the axis.
"""
# Check if colors where provided, otherwhise use the default color cycle
if colors is None:
colors = plt.rcParams['axes.prop_cycle'].by_key()['color']
# Number of bars per group
n_bars = len(data)
# The width of a single bar
bar_width = total_width / n_bars
# List containing handles for the drawn bars, used for the legend
bars = []
# Iterate over all data
for i, (name, values) in enumerate(data.items()):
# The offset in x direction of that bar
x_offset = (i - n_bars / 2) * bar_width + bar_width / 2
# Draw a bar for every value of that type
for x, y in enumerate(values):
bar = ax.bar(x + x_offset, y, width=bar_width * single_width, color=colors[i % len(colors)])
# Add a handle to the last drawn bar, which we'll need for the legend
bars.append(bar[0])
# Draw legend if we need
if legend:
ax.legend(bars, data.keys())
if __name__ == "__main__":
# Usage example:
data = {
"a": [1, 2, 3, 2, 1],
"b": [2, 3, 4, 3, 1],
"c": [3, 2, 1, 4, 2],
"d": [5, 9, 2, 1, 8],
"e": [1, 3, 2, 2, 3],
"f": [4, 3, 1, 1, 4],
}
fig, ax = plt.subplots()
bar_plot(ax, data, total_width=.8, single_width=.9)
plt.show()
Output:
If we do it just like this:
Dim myArr as Variant
myArr = Range("A1:A10")
the new array will be with two dimensions. Which is not always somehow comfortable to work with:
To get away of the two dimensions, when getting a single column to array, we may use the built-in Excel function “Transpose”. With it, the data becomes in one dimension:
If we have the data in a row, a single transpose will not do the job. We need to use the Transpose function twice:
Note: As you see from the screenshots, when generated this way, arrays start with 1, not with 0. Just be a bit careful.
I strongly recommend that you not define your own scheme. This goes against the web standards for URI schemes, which attempts to rigidly control those names for good reason -- to avoid name conflicts between different entities. Once you put a link to your scheme on a web site, you have put that little name into entire the entire Internet's namespace, and should be following those standards.
If you just want to be able to have a link to your own app, I recommend you follow the approach I described here:
You can use the SO_RCVTIMEO and SO_SNDTIMEO socket options to set timeouts for any socket operations, like so:
struct timeval timeout;
timeout.tv_sec = 10;
timeout.tv_usec = 0;
if (setsockopt (sockfd, SOL_SOCKET, SO_RCVTIMEO, (char *)&timeout,
sizeof(timeout)) < 0)
error("setsockopt failed\n");
if (setsockopt (sockfd, SOL_SOCKET, SO_SNDTIMEO, (char *)&timeout,
sizeof(timeout)) < 0)
error("setsockopt failed\n");
Edit: from the setsockopt
man page:
SO_SNDTIMEO
is an option to set a timeout value for output operations. It accepts a struct timeval parameter with the number of seconds and microseconds used to limit waits for output operations to complete. If a send operation has blocked for this much time, it returns with a partial count or with the error EWOULDBLOCK if no data were sent. In the current implementation, this timer is restarted each time additional data are delivered to the protocol, implying that the limit applies to output portions ranging in size from the low-water mark to the high-water mark for output.
SO_RCVTIMEO
is an option to set a timeout value for input operations. It accepts a struct timeval parameter with the number of seconds and microseconds used to limit waits for input operations to complete. In the current implementation, this timer is restarted each time additional data are received by the protocol, and thus the limit is in effect an inactivity timer. If a receive operation has been blocked for this much time without receiving additional data, it returns with a short count or with the error EWOULDBLOCK if no data were received. The struct timeval parameter must represent a positive time interval; otherwise, setsockopt() returns with the error EDOM.
The main difference is that SurfaceView
can be drawn on by background theads but Views
can't.
SurfaceViews
use more resources though so you don't want to use them unless you have to.
if you know the index of the item of default value,just
lstDepartment.SelectedIndex = 1;//the second item
or if you know the value you want to set, just
lstDepartment.SelectedValue = "the value you want to set";
As explained in the previous answer it provides a simple interface to the consuming client. For example: "watch ESPN" is the intended function. But it involves several steps like:
But the facade will simplify this and just provide "watch ESPN" function to the client.
All you need to do is using
getFragmentManager()
method on your fragment. It will give you the support fragment manager, when you used it while adding this fragment.
I've managed to achieve it with minimal effort (just as simple as with ASP.NET Core).
For that I use OWIN Startup.cs
file and Microsoft.Owin.Security.Jwt
library.
In order for the app to hit Startup.cs
we need to amend Web.config
:
<configuration>
<appSettings>
<add key="owin:AutomaticAppStartup" value="true" />
...
Here's how Startup.cs
should look:
using MyApp.Helpers;
using Microsoft.IdentityModel.Tokens;
using Microsoft.Owin;
using Microsoft.Owin.Security;
using Microsoft.Owin.Security.Jwt;
using Owin;
[assembly: OwinStartup(typeof(MyApp.App_Start.Startup))]
namespace MyApp.App_Start
{
public class Startup
{
public void Configuration(IAppBuilder app)
{
app.UseJwtBearerAuthentication(
new JwtBearerAuthenticationOptions
{
AuthenticationMode = AuthenticationMode.Active,
TokenValidationParameters = new TokenValidationParameters()
{
ValidAudience = ConfigHelper.GetAudience(),
ValidIssuer = ConfigHelper.GetIssuer(),
IssuerSigningKey = ConfigHelper.GetSymmetricSecurityKey(),
ValidateLifetime = true,
ValidateIssuerSigningKey = true
}
});
}
}
}
Many of you guys use ASP.NET Core nowadays, so as you can see it doesn't differ a lot from what we have there.
It really got me perplexed first, I was trying to implement custom providers, etc. But I didn't expect it to be so simple. OWIN
just rocks!
Just one thing to mention - after I enabled OWIN Startup NSWag
library stopped working for me (e.g. some of you might want to auto-generate typescript HTTP proxies for Angular app).
The solution was also very simple - I replaced NSWag
with Swashbuckle
and didn't have any further issues.
Ok, now sharing ConfigHelper
code:
public class ConfigHelper
{
public static string GetIssuer()
{
string result = System.Configuration.ConfigurationManager.AppSettings["Issuer"];
return result;
}
public static string GetAudience()
{
string result = System.Configuration.ConfigurationManager.AppSettings["Audience"];
return result;
}
public static SigningCredentials GetSigningCredentials()
{
var result = new SigningCredentials(GetSymmetricSecurityKey(), SecurityAlgorithms.HmacSha256);
return result;
}
public static string GetSecurityKey()
{
string result = System.Configuration.ConfigurationManager.AppSettings["SecurityKey"];
return result;
}
public static byte[] GetSymmetricSecurityKeyAsBytes()
{
var issuerSigningKey = GetSecurityKey();
byte[] data = Encoding.UTF8.GetBytes(issuerSigningKey);
return data;
}
public static SymmetricSecurityKey GetSymmetricSecurityKey()
{
byte[] data = GetSymmetricSecurityKeyAsBytes();
var result = new SymmetricSecurityKey(data);
return result;
}
public static string GetCorsOrigins()
{
string result = System.Configuration.ConfigurationManager.AppSettings["CorsOrigins"];
return result;
}
}
Another important aspect - I sent JWT Token via Authorization header, so typescript code looks for me as follows:
(the code below is generated by NSWag)
@Injectable()
export class TeamsServiceProxy {
private http: HttpClient;
private baseUrl: string;
protected jsonParseReviver: ((key: string, value: any) => any) | undefined = undefined;
constructor(@Inject(HttpClient) http: HttpClient, @Optional() @Inject(API_BASE_URL) baseUrl?: string) {
this.http = http;
this.baseUrl = baseUrl ? baseUrl : "https://localhost:44384";
}
add(input: TeamDto | null): Observable<boolean> {
let url_ = this.baseUrl + "/api/Teams/Add";
url_ = url_.replace(/[?&]$/, "");
const content_ = JSON.stringify(input);
let options_ : any = {
body: content_,
observe: "response",
responseType: "blob",
headers: new HttpHeaders({
"Content-Type": "application/json",
"Accept": "application/json",
"Authorization": "Bearer " + localStorage.getItem('token')
})
};
See headers part - "Authorization": "Bearer " + localStorage.getItem('token')
Solution:
SUBSTRING(sys.fn_sqlvarbasetostr(HASHBYTES('MD5','your text')),3,32)
Both kinds of enclosed characters are strings. One type of quote is conveniently used to enclose the other type of quote. "'"
and '"'
. The biggest difference between the types of quotes is that enclosed identifier references are substituted for inside double quotes, but not inside single quotes.
You might try changing this line in your persistence.xml from
<property name="hbm2ddl.auto" value="create"/>
to:
<property name="hibernate.hbm2ddl.auto" value="update"/>
This is supposed to maintain the schema to follow any changes you make to the Model each time you run the app.
Got this from JavaRanch
and then execute in command prompt (ADMIN)
netsh wlan start hostednetwork
This worked for me
mysqldump -u root -p mydbscheme > mydbscheme_dump.sql
after issuing the command it asks for a password:
Enter password:
entering the password will make the dump file.
Didn't see this here
System.Web.HttpUtility.JavaScriptStringEncode("Hello, this is Satan's Site")
it was the only thing that worked (asp 4.0+) when dealing with html like this. The'
gets rendered as '
(using htmldecode) in the html, causing it to fail:
<a href="article.aspx?id=268" onclick="tabs.open('modules/xxx/id/268', 'It's Allstars'); return false;">It's Allstars</a>
What happens
When the user views a form to create, update, or destroy a resource, the Rails app creates a random authenticity_token
, stores this token in the session, and places it in a hidden field in the form. When the user submits the form, Rails looks for the authenticity_token
, compares it to the one stored in the session, and if they match the request is allowed to continue.
Why it happens
Since the authenticity token is stored in the session, the client cannot know its value. This prevents people from submitting forms to a Rails app without viewing the form within that app itself.
Imagine that you are using service A, you logged into the service and everything is ok. Now imagine that you went to use service B, and you saw a picture you like, and pressed on the picture to view a larger size of it. Now, if some evil code was there at service B, it might send a request to service A (which you are logged into), and ask to delete your account, by sending a request to http://serviceA.com/close_account
. This is what is known as CSRF (Cross Site Request Forgery).
If service A is using authenticity tokens, this attack vector is no longer applicable, since the request from service B would not contain the correct authenticity token, and will not be allowed to continue.
API docs describes details about meta tag:
CSRF protection is turned on with the
protect_from_forgery
method, which checks the token and resets the session if it doesn't match what was expected. A call to this method is generated for new Rails applications by default. The token parameter is namedauthenticity_token
by default. The name and value of this token must be added to every layout that renders forms by includingcsrf_meta_tags
in the HTML head.
Notes
Keep in mind, Rails only verifies not idempotent methods (POST, PUT/PATCH and DELETE). GET request are not checked for authenticity token. Why? because the HTTP specification states that GET requests is idempotent and should not create, alter, or destroy resources at the server, and the request should be idempotent (if you run the same command multiple times, you should get the same result every time).
Also the real implementation is a bit more complicated as defined in the beginning, ensuring better security. Rails does not issue the same stored token with every form. Neither does it generate and store a different token every time. It generates and stores a cryptographic hash in a session and issues new cryptographic tokens, which can be matched against the stored one, every time a page is rendered. See request_forgery_protection.rb.
Lessons
Use authenticity_token
to protect your not idempotent methods (POST, PUT/PATCH, and DELETE). Also make sure not to allow any GET requests that could potentially modify resources on the server.
EDIT: Check the comment by @erturne regarding GET requests being idempotent. He explains it in a better way than I have done here.
The only way I can think of doing this is by creating a method that gives you the property using Object.keys();
.
var obj = {
dog: "woof",
cat: "meow",
key: function(n) {
return this[Object.keys(this)[n]];
}
};
obj.key(1); // "meow"
Demo: http://jsfiddle.net/UmkVn/
It would be possible to extend this to all objects using Object.prototype;
but that isn't usually recommended.
Instead, use a function helper:
var object = {
key: function(n) {
return this[ Object.keys(this)[n] ];
}
};
function key(obj, idx) {
return object.key.call(obj, idx);
}
key({ a: 6 }, 0); // 6
Bootstrap 4 has a native class to do this : add the class .no-gutters
to the parent .row
return Labels;
should do the trick!
public static ArtworkData[] GetDataRecords(int UsersID)
{
ArtworkData[] Labels;
Labels = new ArtworkData[3];
return Labels;
}