Dynamic analysis methods
Here I describe a few dynamic analysis methods.
Dynamic methods actually run the program to determine the call graph.
The opposite of dynamic methods are static methods, which try to determine it from the source alone without running the program.
Advantages of dynamic methods:
Disadvantages of dynamic methods:
KcacheGrind
https://kcachegrind.github.io/html/Home.html
Test program:
int f2(int i) { return i + 2; }
int f1(int i) { return f2(2) + i + 1; }
int f0(int i) { return f1(1) + f2(2); }
int pointed(int i) { return i; }
int not_called(int i) { return 0; }
int main(int argc, char **argv) {
int (*f)(int);
f0(1);
f1(1);
f = pointed;
if (argc == 1)
f(1);
if (argc == 2)
not_called(1);
return 0;
}
Usage:
sudo apt-get install -y kcachegrind valgrind
# Compile the program as usual, no special flags.
gcc -ggdb3 -O0 -o main -std=c99 main.c
# Generate a callgrind.out.<PID> file.
valgrind --tool=callgrind ./main
# Open a GUI tool to visualize callgrind data.
kcachegrind callgrind.out.1234
You are now left inside an awesome GUI program that contains a lot of interesting performance data.
On the bottom right, select the "Call graph" tab. This shows an interactive call graph that correlates to performance metrics in other windows as you click the functions.
To export the graph, right click it and select "Export Graph". The exported PNG looks like this:
From that we can see that:
_start
, which is the actual ELF entry point, and contains glibc initialization boilerplatef0
, f1
and f2
are called as expected from one anotherpointed
is also shown, even though we called it with a function pointer. It might not have been called if we had passed a command line argument.not_called
is not shown because it didn't get called in the run, because we didn't pass an extra command line argument.The cool thing about valgrind
is that it does not require any special compilation options.
Therefore, you could use it even if you don't have the source code, only the executable.
valgrind
manages to do that by running your code through a lightweight "virtual machine". This also makes execution extremely slow compared to native execution.
As can be seen on the graph, timing information about each function call is also obtained, and this can be used to profile the program, which is likely the original use case of this setup, not just to see call graphs: How can I profile C++ code running on Linux?
Tested on Ubuntu 18.04.
gcc -finstrument-functions
+ etrace
https://github.com/elcritch/etrace
-finstrument-functions
adds callbacks, etrace parses the ELF file and implements all callbacks.
I couldn't get it working however unfortunately: Why doesn't `-finstrument-functions` work for me?
Claimed output is of format:
\-- main
| \-- Crumble_make_apple_crumble
| | \-- Crumble_buy_stuff
| | | \-- Crumble_buy
| | | \-- Crumble_buy
| | | \-- Crumble_buy
| | | \-- Crumble_buy
| | | \-- Crumble_buy
| | \-- Crumble_prepare_apples
| | | \-- Crumble_skin_and_dice
| | \-- Crumble_mix
| | \-- Crumble_finalize
| | | \-- Crumble_put
| | | \-- Crumble_put
| | \-- Crumble_cook
| | | \-- Crumble_put
| | | \-- Crumble_bake
Likely the most efficient method besides specific hardware tracing support, but has the downside that you have to recompile the code.
Here is a more complete example:
import csv
import numpy as np
with open('filename','rb') as csvfile:
cdl = list( csv.reader(csvfile,delimiter='\t'))
print "Number of records = " + str(len(cdl))
#then later
npcdl = np.array(cdl)
Hope this helps!!
Now Apple Inc. added a new device screen shots also over iTunesconnect that is iPad Pro. Here are all sizes of screen shots which iTunesconnects requires.
That is weird, everything looks fine, are you sure it does not work for you? Because this main
surely works for me, so I would look somewhere else for the source of your problem.
#include <QFile>
#include <QTextStream>
int main()
{
QString filename = "Data.txt";
QFile file(filename);
if (file.open(QIODevice::ReadWrite)) {
QTextStream stream(&file);
stream << "something" << endl;
}
}
The code you provided is also almost the same as the one provided in detailed description of QTextStream so I am pretty sure, that the problem is elsewhere :)
Also note, that the file is not called Data
but Data.txt
and should be created/located in the directory from which the program was run (not necessarily the one where the executable is located).
I've also found that if you had display:none, then programmatically changed it to be visible, you might also have to set
$tr.css({display:'table-row'});
rather than display:inline or display:block otherwise the cell might only show as taking up 1 cell, no matter how large you have the colspan set to.
Table is the obvious choice, but it returns an object of class table
which takes a few annoying steps to transform back into a data.frame
So, if you're OK using dplyr, you use the command tally
:
library(dplyr)
df = data.frame(sex=sample(c("M", "F"), 100000, replace=T), occupation=sample(c('Analyst', 'Student'), 100000, replace=T)
df %>% group_by_all() %>% tally()
# A tibble: 4 x 3
# Groups: sex [2]
sex occupation `n()`
<fct> <fct> <int>
1 F Analyst 25105
2 F Student 24933
3 M Analyst 24769
4 M Student 25193
you can invoke it using window.function_name() or directly function_name()
NOOB ERROR FIX: I'm new to Node.js and setup a webserver listening to port 8080. I ran into the EADDRINUSE error. I tried all the various 'kill -9 node' iterations and kept getting, 'node: no process found'
The problem was, I was calling http.listen(8080); TWICE in the same blob of code. So the first time it was actually working fine, and the second time it threw an error.
If you're getting a 'no process found' response when trying to kill the port, try checking to make sure you're only opening the port once.
The Unix Date command will display in epoch time
the command is
date +"%s"
https://linux.die.net/man/1/date
Edit: Some people have observed you asked for days, so it's the result of that command divided by 86,400
With Bootstrap 3 you can use 'hidden.bs.modal' event handler to delete any modal-related data, forcing the popup to reload next time:
$('#modal').on('hidden.bs.modal', function() {
$(this).removeData('bs.modal');
});
I don't understand how other answers don't answer the original question about how to use PHP (not very consistent with the title).
PHP files or PHP code embedded in HTML code start always with the tag <?php
and ends with ?>
.
You can embed PHP code inside HTML like this (you have to save the file using .php
extension to let PHP server recognize and process it, ie: index.php):
<body>
<?php echo "<div>Hello World!</div>" ?>
</body>
or you can use a whole php file, ie: test.php:
<?php
$mycontent = "Hello World!";
echo "<div>$mycontent</div>";
?> // is not mandatory to put this at the end of the file
there's no document.ready
in PHP, the scripts are processed when they are invoked from the browser or from another PHP file.
First, create a directory(folder) in the root of your local repo that will contain the screenshots
you want added. Let’s call the name of this directory screenshots
. Place the images (JPEG, PNG, GIF,` etc) you want to add into this directory.
Android Studio Workspace Screenshot
Secondly, you need to add a link to each image into your README. So, if I have images named 1_ArtistsActivity.png
and 2_AlbumsActivity.png
in my screenshots directory, I will add their links like so:
<img src="screenshots/1_ArtistsActivity.png" height="400" alt="Screenshot"/> <img src=“screenshots/2_AlbumsActivity.png" height="400" alt="Screenshot"/>
If you want each screenshot on a separate line, write their links on separate lines. However, it’s better if you write all the links in one line, separated by space only. It might actually not look too good but by doing so GitHub automatically arranges them for you.
Finally, commit your changes and push it!
it can also be in your capistrano config (Capfile
):
set :rbenv_ruby, "2.7.1"
All you have to do is,
make sure your parent DIV has position:relative
and the element you want center, set it a height and width. use the following CSS
.layer {
width: 600px; height: 500px;
display: block;
position:absolute;
top:0;
left: 0;
right:0;
bottom: 0;
margin:auto;
}
http://jsbin.com/aXEZUgEJ/1/
use [\\W+]
or "[^a-zA-Z0-9]"
as regex to match any special characters and also use String.replaceAll(regex, String) to replace the spl charecter with an empty string. remember as the first arg of String.replaceAll is a regex you have to escape it with a backslash to treat em as a literal charcter.
String c= "hjdg$h&jk8^i0ssh6";
Pattern pt = Pattern.compile("[^a-zA-Z0-9]");
Matcher match= pt.matcher(c);
while(match.find())
{
String s= match.group();
c=c.replaceAll("\\"+s, "");
}
System.out.println(c);
You could use XDocument:
new XDocument(
new XElement("root",
new XElement("someNode", "someValue")
)
)
.Save("foo.xml");
If the file you want to create is very big and cannot fit into memory you might use XmlWriter.
Watch out for certain headers such as HTTP_X_FORWARDED_FOR
that appear to contain a single IP address. They may actually contain multiple addresses (a chain of proxies I assume).
They will appear to be comma delimited - and can be a lot longer than 45 characters total - so check before storing in DB.
As of PHP 5.4.0 there are "Traits" - you can use more traits in one class, so the final deciding point would be whether you want really an inheritance or you just need some "feature"(trait). Trait is, vaguely said, an already implemented interface that is meant to be just use
d.
No you can't, respectively, not really, as manual of extends
keyword says:
An extended class is always dependent on a single base class, that is, multiple inheritance is not supported.
However as @adam suggested correctly this does NOT forbids you to use multiple hierarchal inheritance.
You CAN extend one class, with another and another with another and so on...
So pretty simple example on this would be:
class firstInheritance{}
class secondInheritance extends firstInheritance{}
class someFinalClass extends secondInheritance{}
//...and so on...
As you might have noticed, you can only do multiple(2+) intehritance by hierarchy if you have control over all classes included in the process - that means, you can't apply this solution e.g. with built-in classes or with classes you simply can't edit - if you want to do that, you are left with the @Franck solution - child instances.
...And finally example with some output:
class A{
function a_hi(){
echo "I am a of A".PHP_EOL."<br>".PHP_EOL;
}
}
class B extends A{
function b_hi(){
echo "I am b of B".PHP_EOL."<br>".PHP_EOL;
}
}
class C extends B{
function c_hi(){
echo "I am c of C".PHP_EOL."<br>".PHP_EOL;
}
}
$myTestInstance = new C();
$myTestInstance->a_hi();
$myTestInstance->b_hi();
$myTestInstance->c_hi();
Which outputs
I am a of A
I am b of B
I am c of C
I prefer to use git-bash.exe instead of sh.exe.
start "" "%ProgramFiles%\Git\git-bash.exe" -c "tail -f /c/Windows/win.ini"
You can stop closing the window when call /usr/bin/bash --login -i
in the end;
start "" "%ProgramFiles%\Git\git-bash.exe" -c "echo 1 && echo 2 && /usr/bin/bash --login -i"
Note: I'm not sure this is a good way :)
You may run:
git log <SHA1>..HEAD --ancestry-path --merges
From comment of last commit in the output you may find original branch name
Example:
c---e---g--- feature
/ \
-a---b---d---f---h---j--- master
git log e..master --ancestry-path --merges
commit h
Merge: g f
Author: Eugen Konkov <>
Date: Sat Oct 1 00:54:18 2016 +0300
Merge branch 'feature' into master
Could be because of restoring SQL Server 2012 version backup file into SQL Server 2008 R2 or even less.
.clearfix
is defined in less/mixins.less
. Right above its definition is a comment with a link to this article:
The article explains how it all works.
UPDATE: Yes, link-only answers are bad. I knew this even at the time that I posted this answer, but I didn't feel like copying and pasting was OK due to copyright, plagiarism, and what have you. However, I now feel like it's OK since I have linked to the original article. I should also mention the author's name, though, for credit: Nicolas Gallagher. Here is the meat of the article (note that "Thierry’s method" is referring to Thierry Koblentz’s “clearfix reloaded”):
This “micro clearfix” generates pseudo-elements and sets their
display
totable
. This creates an anonymous table-cell and a new block formatting context that means the:before
pseudo-element prevents top-margin collapse. The:after
pseudo-element is used to clear the floats. As a result, there is no need to hide any generated content and the total amount of code needed is reduced.Including the
:before
selector is not necessary to clear the floats, but it prevents top-margins from collapsing in modern browsers. This has two benefits:
It ensures visual consistency with other float containment techniques that create a new block formatting context, e.g.,
overflow:hidden
It ensures visual consistency with IE 6/7 when
zoom:1
is applied.N.B.: There are circumstances in which IE 6/7 will not contain the bottom margins of floats within a new block formatting context. Further details can be found here: Better float containment in IE using CSS expressions.
The use of
content:" "
(note the space in the content string) avoids an Opera bug that creates space around clearfixed elements if thecontenteditable
attribute is also present somewhere in the HTML. Thanks to Sergio Cerrutti for spotting this fix. An alternative fix is to usefont:0/0 a
.Legacy Firefox
Firefox < 3.5 will benefit from using Thierry’s method with the addition of
visibility:hidden
to hide the inserted character. This is because legacy versions of Firefox needcontent:"."
to avoid extra space appearing between thebody
and its first child element, in certain circumstances (e.g., jsfiddle.net/necolas/K538S/.)Alternative float-containment methods that create a new block formatting context, such as applying
overflow:hidden
ordisplay:inline-block
to the container element, will also avoid this behaviour in legacy versions of Firefox.
In Windows goto task-manager >"services" and check that "MySQL" is runing. If not
Right click on it ->open services->MySQL-> startup type -> 'Automatic' -> apply and OK. this is for windows 10 MySql 5.7
As no one has mentioned, another way to create a String out of a single char:
String s = Character.toString('X');
Returns a String object representing the specified char. The result is a string of length 1 consisting solely of the specified char.
http://jsfiddle.net/adiioo7/vmfbA/
Use
document.body.innerHTML += '<div style="position:absolute;width:100%;height:100%;opacity:0.3;z-index:100;background:#000;"></div>';
instead of
document.body.innerHTML = '<div style="position:absolute;width:100%;height:100%;opacity:0.3;z-index:100;background:#000;"></div>';
Edit:-
Ideally you should use body.appendChild
method instead of changing the innerHTML
var elem = document.createElement('div');
elem.style.cssText = 'position:absolute;width:100%;height:100%;opacity:0.3;z-index:100;background:#000';
document.body.appendChild(elem);
One way to get the list of distinct column names from the database is to use distinct()
in conjunction with values()
.
In your case you can do the following to get the names of distinct categories:
q = ProductOrder.objects.values('Category').distinct()
print q.query # See for yourself.
# The query would look something like
# SELECT DISTINCT "app_productorder"."category" FROM "app_productorder"
There are a couple of things to remember here. First, this will return a ValuesQuerySet
which behaves differently from a QuerySet
. When you access say, the first element of q
(above) you'll get a dictionary, NOT an instance of ProductOrder
.
Second, it would be a good idea to read the warning note in the docs about using distinct()
. The above example will work but all combinations of distinct()
and values()
may not.
PS: it is a good idea to use lower case names for fields in a model. In your case this would mean rewriting your model as shown below:
class ProductOrder(models.Model):
product = models.CharField(max_length=20, primary_key=True)
category = models.CharField(max_length=30)
rank = models.IntegerField()
Have you tried the following:
$('#theDiv').prepend('<img id="theImg" src="theImg.png" />')
Check out the language reference:
http://msdn.microsoft.com/en-us/library/aa195811(office.11).aspx
expression.Open(FileName, UpdateLinks, ReadOnly, Format, Password, WriteResPassword, IgnoreReadOnlyRecommended, Origin, Delimiter, Editable, Notify, Converter, AddToMru, Local, CorruptLoad)
You can use with this format (tested on Laravel 5.5). In my case I used it for gettting the data of database connections and use on Controller:
$User = env('DB_USERNAMEchild','');
$Pass = env('DB_PASSWORDchild','');
The second parameter can be null, or set any default in case of DB_USERNAMEchild is null.
Your .env file can be the same:
DB_HOST=localhost
DB_DATABASE=FATHERBD
DB_USERNAME=root
DB_PASSWORD=password
DB_DATABASEchild=ZTEST
DB_USERNAMEchild=root
DB_PASSWORDchild=passwordofchild
DOMContentLoaded
==window.onDomReady()
Load
==window.onLoad()
A page can't be manipulated safely until the document is "ready." jQuery detects this state of readiness for you. Code included inside
$(document).ready()
will only run once the page Document Object Model (DOM) is ready for JavaScript code to execute. Code included inside$(window).load(function() { ... })
will run once the entire page (images or iframes), not just the DOM, is ready.
As the question is based in hypothetical data here is a good exemple returning a generic that extends Comparable interface.
public class MaximumTest {
// find the max value using Comparable interface
public static <T extends Comparable<T>> T maximum(T x, T y, T z) {
T max = x; // assume that x is initially the largest
if (y.compareTo(max) > 0){
max = y; // y is the large now
}
if (z.compareTo(max) > 0){
max = z; // z is the large now
}
return max; // returns the maximum value
}
//testing with an ordinary main method
public static void main(String args[]) {
System.out.printf("Maximum of %d, %d and %d is %d\n\n", 3, 4, 5, maximum(3, 4, 5));
System.out.printf("Maximum of %.1f, %.1f and %.1f is %.1f\n\n", 6.6, 8.8, 7.7, maximum(6.6, 8.8, 7.7));
System.out.printf("Maximum of %s, %s and %s is %s\n", "strawberry", "apple", "orange",
maximum("strawberry", "apple", "orange"));
}
}
Step 1: Client site integration
Paste this snippet before the closing </head>
tag on your HTML template:
<script src='https://www.google.com/recaptcha/api.js'></script>
Paste this snippet at the end of the <form>
where you want the reCAPTCHA widget to appear:
<div class="g-recaptcha" data-sitekey="your-site-key"></div>
Step 2: Server site integration
When your users submit the form where you integrated reCAPTCHA, you'll get as part of the payload a string with the name "g-recaptcha-response". In order to check whether Google has verified that user, send a POST request with these parameters:
URL : https://www.google.com/recaptcha/api/siteverify
secret : your secret key
response : The value of 'g-recaptcha-response'.
Now in action of your MVC app:
// return ActionResult if you want
public string RecaptchaWork()
{
// Get recaptcha value
var r = Request.Params["g-recaptcha-response"];
// ... validate null or empty value if you want
// then
// make a request to recaptcha api
using (var wc = new WebClient())
{
var validateString = string.Format(
"https://www.google.com/recaptcha/api/siteverify?secret={0}&response={1}",
"your_secret_key", // secret recaptcha key
r); // recaptcha value
// Get result of recaptcha
var recaptcha_result = wc.DownloadString(validateString);
// Just check if request make by user or bot
if (recaptcha_result.ToLower().Contains("false"))
{
return "recaptcha false";
}
}
// Do your work if request send from human :)
}
You can create a <p>
element:
<!DOCTYPE html>_x000D_
<html>_x000D_
<script>_x000D_
var name = prompt("What's your name?");_x000D_
var lengthOfName = name.length_x000D_
p = document.createElement("p");_x000D_
p.innerHTML = "Your name is "+lengthOfName+" characters long.";_x000D_
document.body.appendChild(p);_x000D_
</script>_x000D_
<body>_x000D_
</body>_x000D_
</html>
_x000D_
::
Lets you access a constant, module, or class defined inside another class or module. It is used to provide namespaces so that method and class names don't conflict with other classes by different authors.
When you see ActiveRecord::Base
in Rails it means that Rails has something like
module ActiveRecord
class Base
end
end
i.e. a class called Base
inside a module ActiveRecord
which is then referenced as ActiveRecord::Base
(you can find this in the Rails source in activerecord-n.n.n/lib/active_record/base.rb)
A common use of :: is to access constants defined in modules e.g.
module Math
PI = 3.141 # ...
end
puts Math::PI
The ::
operator does not allow you to bypass visibility of methods marked private or protected.
Java has a feature called "checked exceptions". That means that there are certain kinds of exceptions, namely those that subclass Exception but not RuntimeException, such that if a method may throw them, it must list them in its throws declaration, say: void readData() throws IOException. IOException is one of those.
Thus, when you are calling a method that lists IOException in its throws declaration, you must either list it in your own throws declaration or catch it.
The rationale for the presence of checked exceptions is that for some kinds of exceptions, you must not ignore the fact that they may happen, because their happening is quite a regular situation, not a program error. So, the compiler helps you not to forget about the possibility of such an exception being raised and requires you to handle it in some way.
However, not all checked exception classes in Java standard library fit under this rationale, but that's a totally different topic.
It looks like you have accidentally declared DataType
as an array rather than as a string.
Change line 3 to:
Dim DataType As String = myTableData.Rows(i).Item(1)
That should work.
Here is a recursive implementation - as an extension method, mimicing the format of the framework method(s):
public static int IndexOfNth(
this string input, string value, int startIndex, int nth)
{
if (nth < 1)
throw new NotSupportedException("Param 'nth' must be greater than 0!");
if (nth == 1)
return input.IndexOf(value, startIndex);
return input.IndexOfNth(value, input.IndexOf(value, startIndex) + 1, --nth);
}
Also, here are some (MBUnit) unit tests that might help you (to prove it is correct):
[Test]
public void TestIndexOfNthWorksForNth1()
{
const string input = "foo<br />bar<br />baz<br />";
Assert.AreEqual(3, input.IndexOfNth("<br />", 0, 1));
}
[Test]
public void TestIndexOfNthWorksForNth2()
{
const string input = "foo<br />whatthedeuce<br />kthxbai<br />";
Assert.AreEqual(21, input.IndexOfNth("<br />", 0, 2));
}
[Test]
public void TestIndexOfNthWorksForNth3()
{
const string input = "foo<br />whatthedeuce<br />kthxbai<br />";
Assert.AreEqual(34, input.IndexOfNth("<br />", 0, 3));
}
Since I have to store various types of content in my blob field/column, I am suppose to update my code like this:
echo "data: $mime" $result['$data']";
where:
mime
can be an image of any kind, text, word document, text document, PDF document, etc... content datatype is blob
in database.
To use IN, you must have a set, use this syntax instead:
SELECT * FROM Table1 WHERE Table1.principal NOT IN (SELECT principal FROM table2)
if you are adding multiple items to the list use this:
mAdapter.notifyItemRangeInserted(startPosition, itemcount);
This notify any registered observers that the currently reflected itemCount items starting at positionStart have been newly inserted. The item previously located at positionStart and beyond can now be found starting at position positinStart+itemCount
existing item in the dataset still considered up to date.
You can use SimpleDateFormat to convert the String to Date. And after that you have two options,
get the time in millisecond from that date object, and add two hours like, (2 * 60 * 60 * 1000)
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
// replace with your start date string
Date d = df.parse("2008-04-16 00:05:05");
Calendar gc = new GregorianCalendar();
gc.setTime(d);
gc.add(Calendar.HOUR, 2);
Date d2 = gc.getTime();
Or,
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
// replace with your start date string
Date d = df.parse("2008-04-16 00:05:05");
Long time = d.getTime();
time +=(2*60*60*1000);
Date d2 = new Date(time);
Have a look to these tutorials.
days = (endDate - beginDate)/(60*60*24)
Since you want the trailing string from the input, you can use %n
(number of characters consumed thus far) to get the position at which the trailing string starts. This avoids memory copies and buffer sizing issues, but comes at the cost that you may need to do them explicitly if you wanted a copy.
const char *input = "19 cool kid";
int age;
int nameStart = 0;
sscanf(input, "%d %n", &age, &nameStart);
printf("%s is %d years old\n", input + nameStart, age);
outputs:
cool kid is 19 years old
I get this error very often for some reason when doing "ionic cordova run android" and running on an emulator. What works for me is to end the "adb.exe" process and re-run. Sometimes that also doesn't work and what I do is exit the emulator and in android studio do a "Cold Boot" on the emulator.
For What its worth, this is what I did and maybe it can help others even though the article is old.
PHP:
session_start();
$_SESSION['ipaddress'] = $_SERVER['REMOTE_ADDR'];
if(isset($_SESSION['userID'])){
if(!strpos($_SESSION['activeID'], '-')){
$_SESSION['activeID'] = $_SESSION['userID'].'-'.$_SESSION['activeID'];
}
}elseif(!isset($_SESSION['activeID'])){
$_SESSION['activeID'] = time();
}
JS
window.setInterval(function(){
var userid = '<?php echo $_SESSION['activeID']; ?>';
var ipaddress = '<?php echo $_SESSION['ipaddress']; ?>';
var action = 'data';
$.ajax({
url:'activeUser.php',
method:'POST',
data:{action:action,userid:userid,ipaddress:ipaddress},
success:function(response){
//alert(response);
}
});
}, 5000);
Ajax call to activeUser.php
if(isset($_POST['action'])){
if(isset($_POST['userid'])){
$stamp = time();
$activeid = $_POST['userid'];
$ip = $_POST['ipaddress'];
$query = "SELECT stamp FROM activeusers WHERE activeid = '".$activeid."' LIMIT 1";
$results = RUNSIMPLEDB($query);
if($results->num_rows > 0){
$query = "UPDATE activeusers SET stamp = '$stamp' WHERE activeid = '".$activeid."' AND ip = '$ip' LIMIT 1";
RUNSIMPLEDB($query);
}else{
$query = "INSERT INTO activeusers (activeid,stamp,ip)
VALUES ('".$activeid."','$stamp','$ip')";
RUNSIMPLEDB($query);
}
}
}
Database:
CREATE TABLE `activeusers` (
`id` int(11) NOT NULL,
`activeid` varchar(20) NOT NULL,
`stamp` int(11) NOT NULL,
`ip` text
) ENGINE=MyISAM DEFAULT CHARSET=utf8;
Basically every 5 seconds the js will post to a php file that will track the user and the users ip address. Active users are simply a database record that have an update to the database time stamp within 5 seconds. Old users stop updating to the database. The ip address is used just to ensure that a user is unique so 2 people on the site at the same time don't register as 1 user.
Probably not the most efficient solution but it does the job.
In addition to the dropDuplicates
option there is the method named as we know it in pandas
drop_duplicates
:
drop_duplicates() is an alias for dropDuplicates().
Example
s_df = sqlContext.createDataFrame([("foo", 1),
("foo", 1),
("bar", 2),
("foo", 3)], ('k', 'v'))
s_df.show()
+---+---+
| k| v|
+---+---+
|foo| 1|
|foo| 1|
|bar| 2|
|foo| 3|
+---+---+
Drop by subset
s_df.drop_duplicates(subset = ['k']).show()
+---+---+
| k| v|
+---+---+
|bar| 2|
|foo| 1|
+---+---+
s_df.drop_duplicates().show()
+---+---+
| k| v|
+---+---+
|bar| 2|
|foo| 3|
|foo| 1|
+---+---+
Beautiful set of stencils from Microsoft here.
I got the errors to go away by installing the Windows Universal CRT SDK
component, which adds support for legacy Windows SDKs. You can install this using the Visual Studio Installer:
If the problem still persists, you should change the Target SDK in the Visual Studio Project : check whether the Windows SDK version is 10.0.15063.0.
In : Project -> Properties -> General -> Windows SDK Version -> select 10.0.15063.0.
Then errno.h and other standard files will be found and it will compile.
Just diff your current branch against the remote branch, this will tell you what is going to change when you do a pull/merge.
#see diff between current master and remote branch
git diff master origin/master
Here's an example:
#Create a data frame
> d<- data.frame(a=1:3, b=2:4)
> d
a b
1 1 2
2 2 3
3 3 4
#currently, there are no levels in the `a` column, since it's numeric as you point out.
> levels(d$a)
NULL
#Convert that column to a factor
> d$a <- factor(d$a)
> d
a b
1 1 2
2 2 3
3 3 4
#Now it has levels.
> levels(d$a)
[1] "1" "2" "3"
You can also handle this when reading in your data. See the colClasses
and stringsAsFactors
parameters in e.g. readCSV()
.
Note that, computationally, factoring such columns won't help you much, and may actually slow down your program (albeit negligibly). Using a factor will require that all values are mapped to IDs behind the scenes, so any print of your data.frame requires a lookup on those levels -- an extra step which takes time.
Factors are great when storing strings which you don't want to store repeatedly, but would rather reference by their ID. Consider storing a more friendly name in such columns to fully benefit from factors.
A turkish one. If someone is still interested.
$('input[type="text"]').keyup(function() {
$(this).val($(this).val().replace(/^([a-zA-Z\s\ö\ç\s\i\i\g\ü\Ö\Ç\S\I\G\Ü])|\s+([a-zA-Z\s\ö\ç\s\i\i\g\ü\Ö\Ç\S\I\G\Ü])/g, function ($1) {
if ($1 == "i")
return "I";
else if ($1 == " i")
return " I";
return $1.toUpperCase();
}));
});
Maybe encode them into a known set - something like base 64 is a popular choice.
LastOrDefault()
is usually not working but with the Tolist()
it will work. There is no need to use OrderByDescending
use Tolist()
like this.
GroupBy(p => p.Nws_ID).ToList().LastOrDefault();
you should use mysql
command. It's a command line client for mysql RDBMS, and comes with most mysql installations: http://dev.mysql.com/doc/refman/5.1/en/mysql.html
To stop or start mysql database (you rarely should need doing that 'by hand'), use proper init script with stop
or start
parameter, usually /etc/init.d/mysql stop
. This, however depends on your linux distribution. Some new distributions encourage service mysql start
style.
You're logging in by using mysql
sql shell.
The error comes probably because double '-p' parameter. You can provide -ppassword
or just -p
and you'll be asked for password interactively. Also note, that some instalations might use mysql (not root) user as an administrative user. Check your sqlyog configuration to obtain working connection parameters.
I had this error message with boot2docker on windows with the docker-oracle-xe-11g image (https://registry.hub.docker.com/u/wnameless/oracle-xe-11g/).
The reason was that the virtual box disk was full (check with boot2docker.exe ssh df
). Deleting old images and restarting the container solved the problem.
From your Activity
, just pass in this
as the Context
for your layout:
ProfileView pv = new ProfileView(this, null, temp, tempPd);
Afterwards you will have a Context
in the layout, but you will know it is actually your Activity
and you can cast it so that you have what you need:
Activity activity = (Activity) context;
I find that this query is better/faster for using the "pluck" method, which I love:
Challenge.limit(5).order('id desc')
This gives an ActiveRecord as the output; so you can use .pluck on it like this:
Challenge.limit(5).order('id desc').pluck(:id)
which quickly gives the ids as an array while using optimal SQL code.
Since Tomcat 7.0.76, 8.0.42, 8.5.12 you can define property requestTargetAllow
to allow forbiden characters.
Add this line in your catalina.properties
tomcat.util.http.parser.HttpParser.requestTargetAllow=|{}
I would like to describe a very good example of why negative padding
would be useful and awesome.
As all of us CSS developers know, vertically aligning a dynamically sizing div within another is a hassle, and for the most part, viewed as being impossible only using CSS. The incorporation of negative padding
could change this.
Please review the following HTML:
<div style="height:600px; width:100%;">
<div class="vertical-align" style="width:100%;height:auto;" >
This DIV's height will change based the width of the screen.
</div>
</div>
With the following CSS, we would be able to vertically center the content of the inner div
within the outer div
:
.vertical-align {
position: absolute;
top:50%;
padding-top:-50%;
overflow: visible;
}
Allow me to explain...
Absolutely positioning the inner div's top at 50% places the top edge of the inner div at the center of the outer div. Pretty simple. This is because percentage based positioning is relative to the inner dimensions of the parent element.
Percentage based padding, on the other hand, is based on the inner dimensions of the targeted element. So, by applying the property of padding-top: -50%;
we have shifted the content of the inner div upward by a distance of 50% of the height of the inner div's content, therefore centering the inner div's content within the outer div and still allowing the height dimension of the inner div to be dynamic!
If you ask me OP, this would be the best use-case, and I think it should be implemented just so I can do this hack. lol. Or, they should just fix the functionality of vertical-align
and give us a version of vertical-align
that works on all elements.
In addition to S.Lott's answer and as becomingGuru mentioned in comments, its possible to add the queryset filters by overriding the ModelForm.__init__
function. (This could easily apply to regular forms) it can help with reuse and keeps the view function tidy.
class ClientForm(forms.ModelForm):
def __init__(self,company,*args,**kwargs):
super (ClientForm,self ).__init__(*args,**kwargs) # populates the post
self.fields['rate'].queryset = Rate.objects.filter(company=company)
self.fields['client'].queryset = Client.objects.filter(company=company)
class Meta:
model = Client
def addclient(request, company_id):
the_company = get_object_or_404(Company, id=company_id)
if request.POST:
form = ClientForm(the_company,request.POST) #<-- Note the extra arg
if form.is_valid():
form.save()
return HttpResponseRedirect(the_company.get_clients_url())
else:
form = ClientForm(the_company)
return render_to_response('addclient.html',
{'form': form, 'the_company':the_company})
This can be useful for reuse say if you have common filters needed on many models (normally I declare an abstract Form class). E.g.
class UberClientForm(ClientForm):
class Meta:
model = UberClient
def view(request):
...
form = UberClientForm(company)
...
#or even extend the existing custom init
class PITAClient(ClientForm):
def __init__(company, *args, **args):
super (PITAClient,self ).__init__(company,*args,**kwargs)
self.fields['support_staff'].queryset = User.objects.exclude(user='michael')
Other than that I'm just restating Django blog material of which there are many good ones out there.
Sorry I haven.t read all replies to your question.
Yeah here the thing you want (I have done already)
You can use two tables, with same class name for similar styling, one only with table head and another with your rows. Now put this table inside a div having fixed height with overflow-y:auto OR scroll.
There is a concept of a working directory
.
This directory is represented by a .
(dot).
In relative paths, everything else is relative to it.
Simply put the .
(the working directory) is where you run your program.
In some cases the working directory can be changed but in general this is
what the dot represents. I think this is C:\JavaForTesters\
in your case.
So test\..\test.txt
means: the sub-directory test
in my working directory, then one level up, then the
file test.txt
. This is basically the same as just test.txt
.
For more details check here.
http://docs.oracle.com/javase/7/docs/api/java/io/File.html
http://docs.oracle.com/javase/tutorial/essential/io/pathOps.html
In my Reactive form, I needed to mark a field as invalid if another field was checked. In ng version 7 I did the following:
const checkboxField = this.form.get('<name of field>');
const dropDownField = this.form.get('<name of field>');
this.checkboxField$ = checkboxField.valueChanges
.subscribe((checked: boolean) => {
if(checked) {
dropDownField.setValidators(Validators.required);
dropDownField.setErrors({ required: true });
dropDownField.markAsDirty();
} else {
dropDownField.clearValidators();
dropDownField.markAsPristine();
}
});
So above, when I check the box it sets the dropdown as required and marks it as dirty. If you don't mark as such it then it won't be invalid (in error) until you try to submit the form or interact with it.
If the checkbox is set to false (unchecked) then we clear the required validator on the dropdown and reset it to a pristine state.
Also - remember to unsubscribe from monitoring field changes!
This worked nicely for my needs ;) Hope someone can use it....
public static Color FromName(String name)
{
var color_props= typeof(Colors).GetProperties();
foreach (var c in color_props)
if (name.Equals(c.Name, StringComparison.OrdinalIgnoreCase))
return (Color)c.GetValue(new Color(), null);
return Colors.Transparent;
}
del /s /q c:\where ever the file is\*
rmdir /s /q c:\where ever the file is\
mkdir c:\where ever the file is\
No, there is not; see §3.2.4 "Compound Commands" in the Bash Reference Manual for information about the control structures that do exist. In particular, note the mention of break
and continue
, which aren't as flexible as goto
, but are more flexible in Bash than in some languages, and may help you achieve what you want. (Whatever it is that you want . . .)
You can also configure your SSL in xampp/apache/conf/extra/httpd-vhost.conf
like this:
<VirtualHost *:443>
DocumentRoot C:/xampp/htdocs/yourProject
ServerName yourProject.whatever
SSLEngine on
SSLCertificateFile "conf/ssl.crt/server.crt"
SSLCertificateKeyFile "conf/ssl.key/server.key"
</VirtualHost>
I guess, it's better not change it in the httpd-ssl.conf
if you have more than one project and you need SSL on more than one of them
The relative pathing is based on the document level of the client side i.e. the URL level of the document as seen in the browser.
If the URL of your website is: http://www.example.com/mywebsite/
then starting at the root level starts above the "mywebsite" folder path.
I would suggest not to use seaborn pointplot
for plotting. This makes things unnecessarily complicated.
Instead use matplotlib plot_date
. This allows to set labels to the plots and have them automatically put into a legend with ax.legend()
.
import matplotlib.pyplot as plt
import pandas as pd
import seaborn as sns
import numpy as np
date = pd.date_range("2017-03", freq="M", periods=15)
count = np.random.rand(15,4)
df1 = pd.DataFrame({"date":date, "count" : count[:,0]})
df2 = pd.DataFrame({"date":date, "count" : count[:,1]+0.7})
df3 = pd.DataFrame({"date":date, "count" : count[:,2]+2})
f, ax = plt.subplots(1, 1)
x_col='date'
y_col = 'count'
ax.plot_date(df1.date, df1["count"], color="blue", label="A", linestyle="-")
ax.plot_date(df2.date, df2["count"], color="red", label="B", linestyle="-")
ax.plot_date(df3.date, df3["count"], color="green", label="C", linestyle="-")
ax.legend()
plt.gcf().autofmt_xdate()
plt.show()
sns.pointplot(ax=ax,x=x_col,y=y_col,data=df1,color='blue')
sns.pointplot(ax=ax,x=x_col,y=y_col,data=df2,color='green')
sns.pointplot(ax=ax,x=x_col,y=y_col,data=df3,color='red')
ax.legend(handles=ax.lines[::len(df1)+1], labels=["A","B","C"])
ax.set_xticklabels([t.get_text().split("T")[0] for t in ax.get_xticklabels()])
plt.gcf().autofmt_xdate()
plt.show()
Drag and drop a Python file in the Ipython notebooks "home" notebooks table, click upload. This will create a new notebook with only one cell containing your .py file content
Else copy/paste from your favorite editor ;)
In addition to the answer given by @Marcus you can now also delete a remote branch via:
git push [remote-name] --delete [branch-name]
Sometimes you're not actually interested in the actual value, but in its usage as checksum/hashcode. In this case, the built-in method GetHashCode()
is a good choice:
int checkSumAsInt32 = checkSumAsIn64.GetHashCode();
On Windows you can also set the environment property OPENSSL_CONF
. For example from the commandline you can type:
set OPENSSL_CONF=c:/libs/openssl-0.9.8k/openssl.cnf
to validate it you can type:
echo %OPENSSL_CONF%
You can also set it as part of the computer's environmental variables so all users and services have it available by default. See, for example, Environment variables in Windows NT and How To Manage Environment Variables in Windows XP.
Now you can run openssl commands without having to pass the config location parameter.
INSERT INTO exampleTbl VALUES('he doesn''t work for me')
If you're adding a record through ASP.NET, you can use the SqlParameter object to pass in values so you don't have to worry about the apostrophe's that users enter in.
It's funny how other answers ignore the fact that you can't write to that file...
There are a few workarounds that come to my mind which could help use an arbitrary C:\redirected\settings.xml
and use the mvn
command as usual happily ever after.
mvn
aliasIn a Unix shell (or on Cygwin) you can create
alias mvn='mvn --global-settings "C:\redirected\settings.xml"'
so when you're calling mvn blah blah
from anywhere the config is "automatically" picked up.
See How to create alias in cmd
? if you want this, but don't have a Unix shell.
mvn
wrapperConfigure your environment so that mvn
is resolved to a wrapper script when typed in the command line:
MVN_HOME/bin
or M2_HOME/bin
from your PATH
so mvn
is not resolved any more.PATH
(or use an existing one)In that folder create an mvn.bat
file with contents:
call C:\your\path\to\maven\bin\mvn.bat --global-settings "C:\redirected\settings.xml" %*
Note: if you want some projects to behave differently you can just create mvn.bat
in the same folder as pom.xml
so when you run plain mvn
it resolves to the local one.
Use where mvn
at any time to check how it is resolved, the first one will be run when you type mvn
.
mvn.bat
hackIf you have write access to C:\your\path\to\maven\bin\mvn.bat
, edit the file and add set MAVEN_CMD_LINE_ARG
to the :runm2
part:
@REM Start MAVEN2
:runm2
set MAVEN_CMD_LINE_ARGS=--global-settings "C:\redirected\settings.xml" %MAVEN_CMD_LINE_ARGS%
set CLASSWORLDS_LAUNCHER=...
mvn.sh
hackFor completeness, you can change the C:\your\path\to\maven\bin\mvn
shell script too by changing the exec "$JAVACMD"
command's
${CLASSWORLDS_LAUNCHER} "$@"
part to
${CLASSWORLDS_LAUNCHER} --global-settings "C:\redirected\settings.xml" "$@"
As a person in IT it's funny that you don't have access to your own home folder, for me this constitutes as incompetence from the company you're working for: this is equivalent of hiring someone to do software development, but not providing even the possibility to use anything other than notepad.exe or Microsoft Word to edit the source files. I'd suggest to contact your help desk or administrator and request write access at least to that particular file so that you can change the path of the local repository.
Disclaimer: None of these are tested for this particular use case, but I successfully used all of them previously for various other software.
I'm positive it would require SMTP authentication credentials as well.
In EF 6.2 using FluentAPI, you can use HasIndex()
modelBuilder.Entity<User>().HasIndex(u => u.UserName).IsUnique();
ReducedForm
is a type, so you cannot say
ReducedForm.iSimplifiedNumerator = iNumerator/iGreatCommDivisor;
You can only use the .
operator on an instance:
ReducedForm rf;
rf.iSimplifiedNumerator = iNumerator/iGreatCommDivisor;
I needed to do many very simple XML requests and after reading @Ivan Krechetov's comment about the speed hit of SOAP, I tried his code and discovered http_post_data() is not built into PHP 5.2. Not really wanting to install it, I tried cURL which is on all my servers. Although I do not know how fast cURL is compared to SOAP, it sure was easy to do what I needed. Below is a sample with cURL for anyone needing it.
$xml_data = '<?xml version="1.0" encoding="UTF-8" ?>
<priceRequest><customerNo>123</customerNo><password>abc</password><skuList><SKU>99999</SKU><lineNumber>1</lineNumber></skuList></priceRequest>';
$URL = "https://test.testserver.com/PriceAvailability";
$ch = curl_init($URL);
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: text/xml'));
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, "$xml_data");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$output = curl_exec($ch);
curl_close($ch);
print_r($output);
In my case it was because the filename was containing spaces. Solved it thanks to this documentation (which is unrelated to the problem):
from urllib.parse import unquote_plus
key_name = unquote_plus(event['Records'][0]['s3']['object']['key'])
You also need to upload urllib as a layer with corresponding version (if your lambda is Python 3.7 you have to package urllib in a python 3.7 environment).
The reason is that AWS transform ' ' into '+' (why...) which is really problematic...
You can use two way:
1: You just keep the necessary columns:
drop_column_list = ["drop_column"]
df = df.select([column for column in df.columns if column not in drop_column_list])
2: This is the more elegant way.
df = df.drop("col_name")
You should avoid the collect() version, because it will send to the master the complete dataset, it will take a big computing effort!
I think, answers to this question are too old... currently some desktop and mobile browsers support HTML Templates for doing this.
I've built a little example:
Tested OK in Chrome 61.0, Opera 48.0, Opera Neon 1.0, Android Browser 6.0, Chrome Mobile 61.0 and Adblocker Browser 54.0
Tested KO in Safari 10.1, Firefox 56.0, Edge 38.14 and IE 11
More compatibility info in canisue.com
index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>HTML Template Example</title>
<link rel="stylesheet" href="styles.css">
<link rel="import" href="autoload-template.html">
</head>
<body>
<div class="template-container">1</div>
<div class="template-container">2</div>
<div class="template-container">3</div>
<div class="template-container">4</div>
<div class="template-container">5</div>
</body>
</html>
autoload-template.html
<span id="template-content">
Template Hello World!
</span>
<script>
var me = document.currentScript.ownerDocument;
var post = me.querySelector( '#template-content' );
var container = document.querySelectorAll( '.template-container' );
//alert( container.length );
for(i=0; i<container.length ; i++) {
container[i].appendChild( post.cloneNode( true ) );
}
</script>
styles.css
#template-content {
color: red;
}
.template-container {
background-color: yellow;
color: blue;
}
Your can get more examples in this HTML5 Rocks post
well, easiest way would be something like:
var address = theEncodedString.split(/~/)
var name = address[0], street = address[1]
Just to share, I've developed my own script to do it. Feel free to use it. It generates "SELECT" statements that you can then run on the tables to generate the "INSERT" statements.
select distinct 'SELECT ''INSERT INTO ' + schema_name(ta.schema_id) + '.' + so.name + ' (' + substring(o.list, 1, len(o.list)-1) + ') VALUES ('
+ substring(val.list, 1, len(val.list)-1) + ');'' FROM ' + schema_name(ta.schema_id) + '.' + so.name + ';'
from sys.objects so
join sys.tables ta on ta.object_id=so.object_id
cross apply
(SELECT ' ' +column_name + ', '
from information_schema.columns c
join syscolumns co on co.name=c.COLUMN_NAME and object_name(co.id)=so.name and OBJECT_NAME(co.id)=c.TABLE_NAME and co.id=so.object_id and c.TABLE_SCHEMA=SCHEMA_NAME(so.schema_id)
where table_name = so.name
order by ordinal_position
FOR XML PATH('')) o (list)
cross apply
(SELECT '''+' +case
when data_type = 'uniqueidentifier' THEN 'CASE WHEN [' + column_name+'] IS NULL THEN ''NULL'' ELSE ''''''''+CONVERT(NVARCHAR(MAX),[' + COLUMN_NAME + '])+'''''''' END '
WHEN data_type = 'timestamp' then '''''''''+CONVERT(NVARCHAR(MAX),CONVERT(BINARY(8),[' + COLUMN_NAME + ']),1)+'''''''''
WHEN data_type = 'nvarchar' then 'CASE WHEN [' + column_name+'] IS NULL THEN ''NULL'' ELSE ''''''''+REPLACE([' + COLUMN_NAME + '],'''''''','''''''''''')+'''''''' END'
WHEN data_type = 'varchar' then 'CASE WHEN [' + column_name+'] IS NULL THEN ''NULL'' ELSE ''''''''+REPLACE([' + COLUMN_NAME + '],'''''''','''''''''''')+'''''''' END'
WHEN data_type = 'char' then 'CASE WHEN [' + column_name+'] IS NULL THEN ''NULL'' ELSE ''''''''+REPLACE([' + COLUMN_NAME + '],'''''''','''''''''''')+'''''''' END'
WHEN data_type = 'nchar' then 'CASE WHEN [' + column_name+'] IS NULL THEN ''NULL'' ELSE ''''''''+REPLACE([' + COLUMN_NAME + '],'''''''','''''''''''')+'''''''' END'
when DATA_TYPE='datetime' then 'CASE WHEN [' + column_name+'] IS NULL THEN ''NULL'' ELSE ''''''''+CONVERT(NVARCHAR(MAX),[' + COLUMN_NAME + '],121)+'''''''' END '
when DATA_TYPE='datetime2' then 'CASE WHEN [' + column_name+'] IS NULL THEN ''NULL'' ELSE ''''''''+CONVERT(NVARCHAR(MAX),[' + COLUMN_NAME + '],121)+'''''''' END '
when DATA_TYPE='geography' and column_name<>'Shape' then 'ST_GeomFromText(''POINT('+column_name+'.Lat '+column_name+'.Long)'') '
when DATA_TYPE='geography' and column_name='Shape' then '''''''''+CONVERT(NVARCHAR(MAX),[' + COLUMN_NAME + '])+'''''''''
when DATA_TYPE='bit' then '''''''''+CONVERT(NVARCHAR(MAX),[' + COLUMN_NAME + '])+'''''''''
when DATA_TYPE='xml' then 'CASE WHEN [' + column_name+'] IS NULL THEN ''NULL'' ELSE ''''''''+REPLACE(CONVERT(NVARCHAR(MAX),[' + COLUMN_NAME + ']),'''''''','''''''''''')+'''''''' END '
WHEN DATA_TYPE='image' then 'CASE WHEN [' + column_name+'] IS NULL THEN ''NULL'' ELSE ''''''''+CONVERT(NVARCHAR(MAX),CONVERT(VARBINARY(MAX),[' + COLUMN_NAME + ']),1)+'''''''' END '
WHEN DATA_TYPE='varbinary' then 'CASE WHEN [' + column_name+'] IS NULL THEN ''NULL'' ELSE ''''''''+CONVERT(NVARCHAR(MAX),[' + COLUMN_NAME + '],1)+'''''''' END '
WHEN DATA_TYPE='binary' then 'CASE WHEN [' + column_name+'] IS NULL THEN ''NULL'' ELSE ''''''''+CONVERT(NVARCHAR(MAX),[' + COLUMN_NAME + '],1)+'''''''' END '
when DATA_TYPE='time' then 'CASE WHEN [' + column_name+'] IS NULL THEN ''NULL'' ELSE ''''''''+CONVERT(NVARCHAR(MAX),[' + COLUMN_NAME + '])+'''''''' END '
ELSE 'CASE WHEN [' + column_name+'] IS NULL THEN ''NULL'' ELSE CONVERT(NVARCHAR(MAX),['+column_name+']) END' end
+ '+'', '
from information_schema.columns c
join syscolumns co on co.name=c.COLUMN_NAME and object_name(co.id)=so.name and OBJECT_NAME(co.id)=c.TABLE_NAME and co.id=so.object_id and c.TABLE_SCHEMA=SCHEMA_NAME(so.schema_id)
where table_name = so.name
order by ordinal_position
FOR XML PATH('')) val (list)
where so.type = 'U'
Because nobody mentioned it:
show table status;
lists all tables along with some additional information, including estimated rows for each table. This is what phpMyAdmin is using for its database page.
This information is available in MySQL 4, probably in MySQL 3.23 too - long time prior information schema database.
Because there was down-vote, I want to clarify that the number shown is estimated for InnoDB and TokuDB and it is absolutely correct for MyISAM and Aria (Maria) storage engines.
Per the documentation:
The number of rows. Some storage engines, such as MyISAM, store the exact count. For other storage engines, such as InnoDB, this value is an approximation, and may vary from the actual value by as much as 40% to 50%. In such cases, use SELECT COUNT(*) to obtain an accurate count.
This also is fastest way to see the row count on MySQL, because query like:
select count(*) from table;
Doing full table scan what could be very expensive operation that might take hours on large high load server. It also increase disk I/O.
The same operation might block the table for inserts and updates - this happen only on exotic storage engines.
InnoDB and TokuDB are OK with table lock, but need full table scan.
Background image is not supported in Outlook. You have to use an image and position it behind the text using position relative or absolute.
if you're using std::string, there are two common methods for that:
std::string Str("Some String");
size_t Size = 0;
Size = Str.size();
Size = Str.length();
if you're using the C style string (using char * or const char *) then you can use:
const char *pStr = "Some String";
size_t Size = strlen(pStr);
That header file is not part of the C++ standard, is therefore non-portable, and should be avoided.
Moreover, even if there were some catch-all header in the standard, you would want to avoid it in lieu of specific headers, since the compiler has to actually read in and parse every included header (including recursively included headers) every single time that translation unit is compiled.
As an alternate you can use reactive forms. Here is an example: https://stackblitz.com/edit/angular-pqb2xx
Template
<form [formGroup]="mainForm" ng-submit="submitForm()">
Global Price: <input type="number" formControlName="globalPrice">
<button type="button" [disabled]="mainForm.get('globalPrice').value === null" (click)="applyPriceToAll()">Apply to all</button>
<table border formArrayName="orderLines">
<ng-container *ngFor="let orderLine of orderLines let i=index" [formGroupName]="i">
<tr>
<td>{{orderLine.time | date}}</td>
<td>{{orderLine.quantity}}</td>
<td><input formControlName="price" type="number"></td>
</tr>
</ng-container>
</table>
</form>
Component
import { Component } from '@angular/core';
import { FormGroup, FormControl, FormArray } from '@angular/forms';
@Component({
selector: 'my-app',
templateUrl: './app.component.html',
styleUrls: [ './app.component.css' ]
})
export class AppComponent {
name = 'Angular 6';
mainForm: FormGroup;
orderLines = [
{price: 10, time: new Date(), quantity: 2},
{price: 20, time: new Date(), quantity: 3},
{price: 30, time: new Date(), quantity: 3},
{price: 40, time: new Date(), quantity: 5}
]
constructor() {
this.mainForm = this.getForm();
}
getForm(): FormGroup {
return new FormGroup({
globalPrice: new FormControl(),
orderLines: new FormArray(this.orderLines.map(this.getFormGroupForLine))
})
}
getFormGroupForLine(orderLine: any): FormGroup {
return new FormGroup({
price: new FormControl(orderLine.price)
})
}
applyPriceToAll() {
const formLines = this.mainForm.get('orderLines') as FormArray;
const globalPrice = this.mainForm.get('globalPrice').value;
formLines.controls.forEach(control => control.get('price').setValue(globalPrice));
// optionally recheck value and validity without emit event.
}
submitForm() {
}
}
the string in your question is not a valid json string. From json.org website:
JSON is built on two structures:
* A collection of name/value pairs. In various languages, this is realized as an object, record, struct, dictionary, hash table, keyed list, or associative array. * An ordered list of values. In most languages, this is realized as an array, vector, list, or sequence.
Basically a json string will always start with either { or [.
Then as @Andy E and @Cryo said you can parse the string with json2.js or some other libraries.
IMHO you should avoid eval because it will any javascript program, so you might incur in security issues.
When using Visual Studio Code, building the project (i.e. pressing Ctrl + Shift + B), moves your .ts file into the .vscode folder (I don't know why it does this), then generates the TS18003 error. What I did was move my .ts file out of the .vscode folder, back into the root folder and build the project again.
The project built successfully!
As you can see here there is a very simple way to do that.
In your DialogFragment
add an interface listener like:
public interface EditNameDialogListener {
void onFinishEditDialog(String inputText);
}
Then, add a reference to that listener:
private EditNameDialogListener listener;
This will be used to "activate" the listener method(s), and also to check if the parent Activity/Fragment implements this interface (see below).
In the Activity
/FragmentActivity
/Fragment
that "called" the DialogFragment
simply implement this interface.
In your DialogFragment
all you need to add at the point where you'd like to dismiss the DialogFragment
and return the result is this:
listener.onFinishEditDialog(mEditText.getText().toString());
this.dismiss();
Where mEditText.getText().toString()
is what will be passed back to the calling Activity
.
Note that if you want to return something else simply change the arguments the listener takes.
Finally, you should check whether the interface was actually implemented by the parent activity/fragment:
@Override
public void onAttach(Context context) {
super.onAttach(context);
// Verify that the host activity implements the callback interface
try {
// Instantiate the EditNameDialogListener so we can send events to the host
listener = (EditNameDialogListener) context;
} catch (ClassCastException e) {
// The activity doesn't implement the interface, throw exception
throw new ClassCastException(context.toString()
+ " must implement EditNameDialogListener");
}
}
This technique is very flexible and allow calling back with the result even if your don;t want to dismiss the dialog just yet.
I now use CharlesProxy for development, but previously I have used Fiddler
I really needed this in C# and found Center MessageBox C#
Here's a nicely formatted version
using System;
using System.Windows.Forms;
using System.Text;
using System.Drawing;
using System.Runtime.InteropServices;
public class MessageBoxEx
{
private static IWin32Window _owner;
private static HookProc _hookProc;
private static IntPtr _hHook;
public static DialogResult Show(string text)
{
Initialize();
return MessageBox.Show(text);
}
public static DialogResult Show(string text, string caption)
{
Initialize();
return MessageBox.Show(text, caption);
}
public static DialogResult Show(string text, string caption, MessageBoxButtons buttons)
{
Initialize();
return MessageBox.Show(text, caption, buttons);
}
public static DialogResult Show(string text, string caption, MessageBoxButtons buttons, MessageBoxIcon icon)
{
Initialize();
return MessageBox.Show(text, caption, buttons, icon);
}
public static DialogResult Show(string text, string caption, MessageBoxButtons buttons, MessageBoxIcon icon, MessageBoxDefaultButton defButton)
{
Initialize();
return MessageBox.Show(text, caption, buttons, icon, defButton);
}
public static DialogResult Show(string text, string caption, MessageBoxButtons buttons, MessageBoxIcon icon, MessageBoxDefaultButton defButton, MessageBoxOptions options)
{
Initialize();
return MessageBox.Show(text, caption, buttons, icon, defButton, options);
}
public static DialogResult Show(IWin32Window owner, string text)
{
_owner = owner;
Initialize();
return MessageBox.Show(owner, text);
}
public static DialogResult Show(IWin32Window owner, string text, string caption)
{
_owner = owner;
Initialize();
return MessageBox.Show(owner, text, caption);
}
public static DialogResult Show(IWin32Window owner, string text, string caption, MessageBoxButtons buttons)
{
_owner = owner;
Initialize();
return MessageBox.Show(owner, text, caption, buttons);
}
public static DialogResult Show(IWin32Window owner, string text, string caption, MessageBoxButtons buttons, MessageBoxIcon icon)
{
_owner = owner;
Initialize();
return MessageBox.Show(owner, text, caption, buttons, icon);
}
public static DialogResult Show(IWin32Window owner, string text, string caption, MessageBoxButtons buttons, MessageBoxIcon icon, MessageBoxDefaultButton defButton)
{
_owner = owner;
Initialize();
return MessageBox.Show(owner, text, caption, buttons, icon, defButton);
}
public static DialogResult Show(IWin32Window owner, string text, string caption, MessageBoxButtons buttons, MessageBoxIcon icon, MessageBoxDefaultButton defButton, MessageBoxOptions options)
{
_owner = owner;
Initialize();
return MessageBox.Show(owner, text, caption, buttons, icon,
defButton, options);
}
public delegate IntPtr HookProc(int nCode, IntPtr wParam, IntPtr lParam);
public delegate void TimerProc(IntPtr hWnd, uint uMsg, UIntPtr nIDEvent, uint dwTime);
public const int WH_CALLWNDPROCRET = 12;
public enum CbtHookAction : int
{
HCBT_MOVESIZE = 0,
HCBT_MINMAX = 1,
HCBT_QS = 2,
HCBT_CREATEWND = 3,
HCBT_DESTROYWND = 4,
HCBT_ACTIVATE = 5,
HCBT_CLICKSKIPPED = 6,
HCBT_KEYSKIPPED = 7,
HCBT_SYSCOMMAND = 8,
HCBT_SETFOCUS = 9
}
[DllImport("user32.dll")]
private static extern bool GetWindowRect(IntPtr hWnd, ref Rectangle lpRect);
[DllImport("user32.dll")]
private static extern int MoveWindow(IntPtr hWnd, int X, int Y, int nWidth, int nHeight, bool bRepaint);
[DllImport("User32.dll")]
public static extern UIntPtr SetTimer(IntPtr hWnd, UIntPtr nIDEvent, uint uElapse, TimerProc lpTimerFunc);
[DllImport("User32.dll")]
public static extern IntPtr SendMessage(IntPtr hWnd, int Msg, IntPtr wParam, IntPtr lParam);
[DllImport("user32.dll")]
public static extern IntPtr SetWindowsHookEx(int idHook, HookProc lpfn, IntPtr hInstance, int threadId);
[DllImport("user32.dll")]
public static extern int UnhookWindowsHookEx(IntPtr idHook);
[DllImport("user32.dll")]
public static extern IntPtr CallNextHookEx(IntPtr idHook, int nCode, IntPtr wParam, IntPtr lParam);
[DllImport("user32.dll")]
public static extern int GetWindowTextLength(IntPtr hWnd);
[DllImport("user32.dll")]
public static extern int GetWindowText(IntPtr hWnd, StringBuilder text, int maxLength);
[DllImport("user32.dll")]
public static extern int EndDialog(IntPtr hDlg, IntPtr nResult);
[StructLayout(LayoutKind.Sequential)]
public struct CWPRETSTRUCT
{
public IntPtr lResult;
public IntPtr lParam;
public IntPtr wParam;
public uint message;
public IntPtr hwnd;
} ;
static MessageBoxEx()
{
_hookProc = new HookProc(MessageBoxHookProc);
_hHook = IntPtr.Zero;
}
private static void Initialize()
{
if (_hHook != IntPtr.Zero)
{
throw new NotSupportedException("multiple calls are not supported");
}
if (_owner != null)
{
_hHook = SetWindowsHookEx(WH_CALLWNDPROCRET, _hookProc, IntPtr.Zero, AppDomain.GetCurrentThreadId());
}
}
private static IntPtr MessageBoxHookProc(int nCode, IntPtr wParam, IntPtr lParam)
{
if (nCode < 0)
{
return CallNextHookEx(_hHook, nCode, wParam, lParam);
}
CWPRETSTRUCT msg = (CWPRETSTRUCT)Marshal.PtrToStructure(lParam, typeof(CWPRETSTRUCT));
IntPtr hook = _hHook;
if (msg.message == (int)CbtHookAction.HCBT_ACTIVATE)
{
try
{
CenterWindow(msg.hwnd);
}
finally
{
UnhookWindowsHookEx(_hHook);
_hHook = IntPtr.Zero;
}
}
return CallNextHookEx(hook, nCode, wParam, lParam);
}
private static void CenterWindow(IntPtr hChildWnd)
{
Rectangle recChild = new Rectangle(0, 0, 0, 0);
bool success = GetWindowRect(hChildWnd, ref recChild);
int width = recChild.Width - recChild.X;
int height = recChild.Height - recChild.Y;
Rectangle recParent = new Rectangle(0, 0, 0, 0);
success = GetWindowRect(_owner.Handle, ref recParent);
Point ptCenter = new Point(0, 0);
ptCenter.X = recParent.X + ((recParent.Width - recParent.X) / 2);
ptCenter.Y = recParent.Y + ((recParent.Height - recParent.Y) / 2);
Point ptStart = new Point(0, 0);
ptStart.X = (ptCenter.X - (width / 2));
ptStart.Y = (ptCenter.Y - (height / 2));
ptStart.X = (ptStart.X < 0) ? 0 : ptStart.X;
ptStart.Y = (ptStart.Y < 0) ? 0 : ptStart.Y;
int result = MoveWindow(hChildWnd, ptStart.X, ptStart.Y, width,
height, false);
}
}
I've used something else (I think better...) and want to share it:
I created a VIEW that has a "group" clause
CREATE VIEW vCountries AS SELECT * PROVINCES GROUP BY country_code
SELECT * FROM client INNER JOIN vCountries on client_province = province_id
I want to say yet, that I think that we need to do this solution BECAUSE WE DID SOMETHING WRONG IN THE ANALYSIS... at least in my case... but sometimes it's cheaper to do this that to redesign everything...
I hope it helps!
#!/usr/bin/expect -f
# connect via scp
spawn scp "[email protected]:/home/santhosh/file.dmp" /u01/dumps/file.dmp
#######################
expect {
-re ".*es.*o.*" {
exp_send "yes\r"
exp_continue
}
-re ".*sword.*" {
exp_send "PASSWORD\r"
}
}
interact
http://blogs.oracle.com/SanthoshK/entry/automate_linux_scp_command
For anyone trying to get this working using the Sysdeo Eclipse Tomcat plugin, try the following steps (I used Sysdeo Tomcat Plugin 3.3.0, Eclipse Kepler, and Tomcat 7.0.53 to construct these steps):
-Djava.util.logging.config.file="{TOMCAT_HOME}\conf\logging.properties"
, where {TOMCAT_HOME}
is the path to your Tomcat directory (example: C:\Tomcat\apache-tomcat-7.0.53\conf\logging.properties). Click OK.-Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager
. Click OK.{TOMCAT_HOME}\conf\logging.properties
file as specified in the question above.{TOMCAT_HOME}\logs\catalina.yyyy-mm-dd.log
.Maybe it does not fit to your code but i found out if you have a code snippet like this:
@SpringBootApplication
public class SpringBootApacheKafkaApplication {
public static void main(String[] args) {
SpringApplication.run(SpringBootApacheKafkaApplication.class,args).close();
}
}
then just remove the close() method. That's fixed my problem! Maybe I can help someone with that
If you want specifically do something when click on close button exactly like you described:
<a href="#" class="btn close_link" data-dismiss="modal">Close</a>
you need to attach an event using css selector:
$(document).on('click', '[data-dismiss="modal"]', function(){what you want to do})
But if you want to do something when modal close, you can use the already wrote tips
You must set proxy server for gradle at some time, you can try to change the proxy server ip address in gradle.properties which is under .gradle document
Weak references are collected eagerly. If GC finds that an object is weakly reachable (reachable only through weak references), it'll clear the weak references to that object immediately. As such, they're good for keeping a reference to an object for which your program also keeps (strongly referenced) "associated information" somewere, like cached reflection information about a class, or a wrapper for an object, etc. Anything that makes no sense to keep after the object it is associated with is GC-ed. When the weak reference gets cleared, it gets enqueued in a reference queue that your code polls somewhere, and it discards the associated objects as well. That is, you keep extra information about an object, but that information is not needed once the object it refers to goes away. Actually, in certain situations you can even subclass WeakReference and keep the associated extra information about the object in the fields of the WeakReference subclass. Another typical use of WeakReference is in conjunction with Maps for keeping canonical instances.
SoftReferences on the other hand are good for caching external, recreatable resources as the GC typically delays clearing them. It is guaranteed though that all SoftReferences will get cleared before OutOfMemoryError is thrown, so they theoretically can't cause an OOME[*].
Typical use case example is keeping a parsed form of a contents from a file. You'd implement a system where you'd load a file, parse it, and keep a SoftReference to the root object of the parsed representation. Next time you need the file, you'll try to retrieve it through the SoftReference. If you can retrieve it, you spared yourself another load/parse, and if the GC cleared it in the meantime, you reload it. That way, you utilize free memory for performance optimization, but don't risk an OOME.
Now for the [*]. Keeping a SoftReference can't cause an OOME in itself. If on the other hand you mistakenly use SoftReference for a task a WeakReference is meant to be used (namely, you keep information associated with an Object somehow strongly referenced, and discard it when the Reference object gets cleared), you can run into OOME as your code that polls the ReferenceQueue and discards the associated objects might happen to not run in a timely fashion.
So, the decision depends on usage - if you're caching information that is expensive to construct, but nonetheless reconstructible from other data, use soft references - if you're keeping a reference to a canonical instance of some data, or you want to have a reference to an object without "owning" it (thus preventing it from being GC'd), use a weak reference.
I know this question assumes just a Collection
, and not more specifically any List
. But for those reading this question who are indeed working with a List
reference, you can avoid ConcurrentModificationException
with a while
-loop (while modifying within it) instead if you want to avoid Iterator
(either if you want to avoid it in general, or avoid it specifically to achieve a looping order different from start-to-end stopping at each element [which I believe is the only order Iterator
itself can do]):
*Update: See comments below that clarify the analogous is also achievable with the traditional-for-loop.
final List<Integer> list = new ArrayList<>();
for(int i = 0; i < 10; ++i){
list.add(i);
}
int i = 1;
while(i < list.size()){
if(list.get(i) % 2 == 0){
list.remove(i++);
} else {
i += 2;
}
}
No ConcurrentModificationException from that code.
There we see looping not start at the beginning, and not stop at every element (which I believe Iterator
itself can't do).
FWIW we also see get
being called on list
, which could not be done if its reference was just Collection
(instead of the more specific List
-type of Collection
) - List
interface includes get
, but Collection
interface does not. If not for that difference, then the list
reference could instead be a Collection
[and therefore technically this Answer would then be a direct Answer, instead of a tangential Answer].
FWIWW same code still works after modified to start at beginning at stop at every element (just like Iterator
order):
final List<Integer> list = new ArrayList<>();
for(int i = 0; i < 10; ++i){
list.add(i);
}
int i = 0;
while(i < list.size()){
if(list.get(i) % 2 == 0){
list.remove(i);
} else {
++i;
}
}
You might not be able to change npm registry using .bat
file as Gntem pointed out.
But I understand that you need the ability to automate changing registries.
You can do so by having your .npmrc
configs in separate files (say npmrc_jfrog & npmrc_default) and have your .bat
files do the copying task.
For example (in Windows):
Your default_registry.bat
will have
xcopy /y npmrc_default .npmrc
and your jfrog_registry.bat
will have
xcopy /y npmrc_jfrog .npmrc
Note: /y
suppresses prompting to confirm that you want to overwrite an existing destination file.
This will make sure that all the config properties (registry, proxy, apiKeys, etc.) get copied over to .npmrc
.
You can read more about xcopy here.
EOF indicates "end of file". A newline (which is what happens when you press enter) isn't the end of a file, it's the end of a line, so a newline doesn't terminate this loop.
The code isn't wrong[*], it just doesn't do what you seem to expect. It reads to the end of the input, but you seem to want to read only to the end of a line.
The value of EOF is -1 because it has to be different from any return value from getchar
that is an actual character. So getchar
returns any character value as an unsigned char, converted to int, which will therefore be non-negative.
If you're typing at the terminal and you want to provoke an end-of-file, use CTRL-D (unix-style systems) or CTRL-Z (Windows). Then after all the input has been read, getchar()
will return EOF
, and hence getchar() != EOF
will be false, and the loop will terminate.
[*] well, it has undefined behavior if the input is more than LONG_MAX characters due to integer overflow, but we can probably forgive that in a simple example.
<?php
$xml = $argv[1];
$dom = new DOMDocument();
// Initial block (must before load xml string)
$dom->preserveWhiteSpace = false;
$dom->formatOutput = true;
// End initial block
$dom->loadXML($xml);
$out = $dom->saveXML();
print_R($out);
I hope I understand your question correctly: assuming that the values are of type String
, the most efficient way is probably to convert to a HashSet
and iterate over it:
ArrayList<String> values = ... //Your values
HashSet<String> uniqueValues = new HashSet<>(values);
for (String value : uniqueValues) {
... //Do something
}
Sqlite helper class helps us to manage database creation and version management.
SQLiteOpenHelper takes care of all database management activities. To use it,
1.Override onCreate(), onUpgrade()
methods of SQLiteOpenHelper
. Optionally override onOpen() method.
2.Use this subclass to create either a readable or writable database and use the SQLiteDatabase's four API methods insert(), execSQL(), update(), delete()
to create, read, update and delete rows of your table.
Example to create a MyEmployees table and to select and insert records:
public class MyDatabaseHelper extends SQLiteOpenHelper {
private static final String DATABASE_NAME = "DBName";
private static final int DATABASE_VERSION = 2;
// Database creation sql statement
private static final String DATABASE_CREATE = "create table MyEmployees
( _id integer primary key,name text not null);";
public MyDatabaseHelper(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
// Method is called during creation of the database
@Override
public void onCreate(SQLiteDatabase database) {
database.execSQL(DATABASE_CREATE);
}
// Method is called during an upgrade of the database,
@Override
public void onUpgrade(SQLiteDatabase database,int oldVersion,int newVersion){
Log.w(MyDatabaseHelper.class.getName(),
"Upgrading database from version " + oldVersion + " to "
+ newVersion + ", which will destroy all old data");
database.execSQL("DROP TABLE IF EXISTS MyEmployees");
onCreate(database);
}
}
Now you can use this class as below,
public class MyDB{
private MyDatabaseHelper dbHelper;
private SQLiteDatabase database;
public final static String EMP_TABLE="MyEmployees"; // name of table
public final static String EMP_ID="_id"; // id value for employee
public final static String EMP_NAME="name"; // name of employee
/**
*
* @param context
*/
public MyDB(Context context){
dbHelper = new MyDatabaseHelper(context);
database = dbHelper.getWritableDatabase();
}
public long createRecords(String id, String name){
ContentValues values = new ContentValues();
values.put(EMP_ID, id);
values.put(EMP_NAME, name);
return database.insert(EMP_TABLE, null, values);
}
public Cursor selectRecords() {
String[] cols = new String[] {EMP_ID, EMP_NAME};
Cursor mCursor = database.query(true, EMP_TABLE,cols,null
, null, null, null, null, null);
if (mCursor != null) {
mCursor.moveToFirst();
}
return mCursor; // iterate to get each value.
}
}
Now you can use MyDB class in you activity to have all the database operations. The create records will help you to insert the values similarly you can have your own functions for update and delete.
Hello i was have the same issue, but it is easly, just do this:
string cadena="96.23";
decimal NoDecimal=decimal.parse(cadena.replace(".",","))
I think this is beacuse the notation that accept C# on decimal numbers are with a ","
If you use a website and you fill out a form to submit information (your social security number for example) you want to be sure that the information is being sent to the site you think it's being sent to. So browsers were built to say, by default, 'Do not send information to a domain other than the domain being visited).
Eventually that became too limiting but the default idea still remains in browsers. Don't let the web page send information to a different domain. But this is all browser checking. Chrome and firefox, etc have built in code that says 'before send this request, we're going to check that the destination matches the page being visited'.
Postman (or CURL on the cmd line) doesn't have those built in checks. You're manually interacting with a site so you have full control over what you're sending.
.htaccess
, httpd.conf
or VirtualHost
sectionHeader set X-Frame-Options SAMEORIGIN
this is the best optionAllow from URI
is not supported by all browsers. Reference: X-Frame-Options on MDN
Use mysql_fetch_assoc instead of mysql_fetch_array
You can do it with animate function in jQuery.
$({ countNum: $('.code').html() }).animate({ countNum: 4000 }, {
duration: 8000,
easing: 'linear',
step: function () {
$('.yourelement').html(Math.floor(this.countNum));
},
complete: function () {
$('.code').html(this.countNum);
//alert('finished');
}
});
$rand = str_pad(dechex(rand(0x000000, 0xFFFFFF)), 6, 0, STR_PAD_LEFT);
echo('#' . $rand);
You can change rand()
in for mt_rand()
if you want, and you can put strtoupper()
around the str_pad()
to make the random number look nicer (although it’s not required).
It works perfectly and is way simpler than all the other methods described here :)
.bashrc
is not sourced when you log in using SSH. You need to source it in your .bash_profile
like this:
if [ -f ~/.bashrc ]; then
. ~/.bashrc
fi
This is much more efficent than above.
find {directory-of-.pyc-files} -name "*.pyc" -print0 | xargs -0 rm -rf
where {directory-of-.pyc-files}
is the directory that contains the compiled python files.
Try to use rbindlist
approach over rbind
as it's very, very fast.
Example:
library(data.table)
##### example 1: slow processing ######
table.1 <- data.frame(x = NA, y = NA)
time.taken <- 0
for( i in 1:100) {
start.time = Sys.time()
x <- rnorm(100)
y <- x/2 +x/3
z <- cbind.data.frame(x = x, y = y)
table.1 <- rbind(table.1, z)
end.time <- Sys.time()
time.taken <- (end.time - start.time) + time.taken
}
print(time.taken)
> Time difference of 0.1637917 secs
####example 2: faster processing #####
table.2 <- list()
t0 <- 0
for( i in 1:100) {
s0 = Sys.time()
x <- rnorm(100)
y <- x/2 + x/3
z <- cbind.data.frame(x = x, y = y)
table.2[[i]] <- z
e0 <- Sys.time()
t0 <- (e0 - s0) + t0
}
s1 = Sys.time()
table.3 <- rbindlist(table.2)
e1 = Sys.time()
t1 <- (e1-s1) + t0
t1
> Time difference of 0.03064394 secs
If you want an recent copy of npgsql, then go here
This can be installed via package manager console as
PM> Install-Package Npgsql
You can also import timedelta so the code is cleaner.
from datetime import datetime, timedelta
date = datetime.now() + timedelta(seconds=[delta_value])
Then convert to date to string
date = date.strftime('%Y-%m-%d %H:%M:%S')
Python one liner is
date = (datetime.now() + timedelta(seconds=[delta_value])).strftime('%Y-%m-%d %H:%M:%S')
CTRL+SHIFT+* is the de-facto standard key combination for showing/hiding whitespace characters in all Microsoft products that support this feature.
P.S: * refers to 8- * key, not to numeric keypad * key.
I don't think we have same case here, but still someone else may find it helpful.
When similar error occurred to me, it was going to be the first merge and first commit. There was nothing in on-line repository. Therefore, there was no code on git-hub, to compare with.
I simply deleted the empty repository and created new one with same name. And then there was no error.
div[disabled]
{
pointer-events: none;
opacity: 0.7;
}
The above code makes the contents of the div disabled. You can make div disabled by adding disabled attribute.
<div disabled>
/* Contents */
</div>
If you're on OpenWrt or using some old version of wget which doesn't gives you -i
option:
#!/bin/bash
input="text_file.txt"
while IFS= read -r line
do
wget $line
done < "$input"
Furthermore, if you don't have wget
, you can use curl
or whatever you use for downloading individual files.
You can set the style attribute of any element... the trick is that in IE you have to do it differently. (bug 245)
//Standards base browsers
elem.setAttribute('style', styleString);
//Non Standards based IE browser
elem.style.setAttribute('cssText', styleString);
Note that in IE8, in Standards Mode, the first way does work.
size_t
is an unsigned type. So, it cannot represent any negative values(<0). You use it when you are counting something, and are sure that it cannot be negative. For example, strlen()
returns a size_t
because the length of a string has to be at least 0.
In your example, if your loop index is going to be always greater than 0, it might make sense to use size_t
, or any other unsigned data type.
When you use a size_t
object, you have to make sure that in all the contexts it is used, including arithmetic, you want non-negative values. For example, let's say you have:
size_t s1 = strlen(str1);
size_t s2 = strlen(str2);
and you want to find the difference of the lengths of str2
and str1
. You cannot do:
int diff = s2 - s1; /* bad */
This is because the value assigned to diff
is always going to be a positive number, even when s2 < s1
, because the calculation is done with unsigned types. In this case, depending upon what your use case is, you might be better off using int
(or long long
) for s1
and s2
.
There are some functions in C/POSIX that could/should use size_t
, but don't because of historical reasons. For example, the second parameter to fgets
should ideally be size_t
, but is int
.
You need to use a delegate. In this case all your methods take a string
parameter and return an int
- this is most simply represented by the Func<string, int>
delegate1. So your code can become correct with as simple a change as this:
public bool RunTheMethod(Func<string, int> myMethodName)
{
// ... do stuff
int i = myMethodName("My String");
// ... do more stuff
return true;
}
Delegates have a lot more power than this, admittedly. For example, with C# you can create a delegate from a lambda expression, so you could invoke your method this way:
RunTheMethod(x => x.Length);
That will create an anonymous function like this:
// The <> in the name make it "unspeakable" - you can't refer to this method directly
// in your own code.
private static int <>_HiddenMethod_<>(string x)
{
return x.Length;
}
and then pass that delegate to the RunTheMethod
method.
You can use delegates for event subscriptions, asynchronous execution, callbacks - all kinds of things. It's well worth reading up on them, particularly if you want to use LINQ. I have an article which is mostly about the differences between delegates and events, but you may find it useful anyway.
1 This is just based on the generic Func<T, TResult>
delegate type in the framework; you could easily declare your own:
public delegate int MyDelegateType(string value)
and then make the parameter be of type MyDelegateType
instead.
For anyone using Flask-SQLAlchemy, this worked for me
from app import db
from app.models import Purchases
from sqlalchemy.orm import aliased
from sqlalchemy import desc
stmt = Purchases.query.distinct(Purchases.address_id).subquery('purchases')
alias = aliased(Purchases, stmt)
distinct = db.session.query(alias)
distinct.order_by(desc(alias.purchased_at))
You can find your keystore details without using password as following way.
Execute the command (keytool -list -keystore <path>
) in command prompt
You can find the Keytool in java folder in my machine I could find form the following path
C:\Program Files (x86)\Java\jdk1.7.0_71\bin> keytool -list -keystore C:\<YourKeystore>.Keystore
Then it will ask you to enter the password, Here you don't need to enter the password instead of that press up arrow button and enter it. then the same details will be display with warning message as below.
***************** WARNING WARNING WARNING *****************
The integrity of the information stored in your keystore *
has NOT been verified! In order to verify its integrity, *
you must provide your keystore password. *
***************** WARNING WARNING WARNING *****************
Keystore type: JKS Keystore provider: SUN
Your keystore contains 1 entry
samplekey, Apr 26, 2017, PrivateKeyEntry, Certificate fingerprint (SHA1): XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX
From Dianne Hackborn:
Things That Cannot Change:
The most obvious and visible of these is the “manifest package name,” the unique name you give to your application in its AndroidManifest.xml. The name uses a Java-language-style naming convention, with Internet domain ownership helping to avoid name collisions. For example, since Google owns the domain “google.com”, the manifest package names of all of our applications should start with “com.google.” It’s important for developers to follow this convention in order to avoid conflicts with other developers.
Once you publish your application under its manifest package name, this is the unique identity of the application forever more. Switching to a different name results in an entirely new application, one that can’t be installed as an update to the existing application.
More on things you cannot change here
Regarding your question on the URL from Google Play, the package defined there is linked to the app's fully qualified package you have in your AndroidManifest.xml file. More on Google Play's link formats here.
First add the new column to the old table through SSMStudio. Go to the database >> table >> columns. Right click on columns and choose new column. Follow the wizard. Then create the new table with the columns ordered as desired as follows:
select * into my_new_table from (
select old_col1, my_new_col, old_col2, old_col3
from my_old_table
) as A
;
Then rename the tables as desired through SSMStudio. Go to the database >> table >> choose rename.
I had the same problem. It's a simple problem of not specifying the right path.
Right click on the on your .fxml
file and select properties (for those using eclipse won't differ that much for another IDE) and then copy the copy the location starting from /packagename
till the end and that should solve the problem
If you already have initialized the modal window, then you may want to reset the options with $('#myModal').removeData("modal").modal({backdrop: 'static', keyboard: false})
to make sure it will apply the new options.
I had this issue start happening when debugging from one web project to a web service in the same solution. The web service was returning responses that the web project couldnt understand. It would kind of work again at some points, then stop again.
It was because there was not an explicit reference between these projects, so the web service was not getting built when hitting F5 to start debugging. Once I added that, the errors went away.
Use Advanced BAT to EXE Converter from http://www.battoexeconverter.com
This will allow you to embed any additional binaries with your batch file in to one stand alone completely silent EXE and its freeware
You can Trim your String value by creating a trim function for your Strings.
String.prototype.trim = function () {
return this.replace(/^\s*/, "").replace(/\s*$/, "");
}
now it will be available for your every String and you can use it as
str.trim().length// Result will be 0
You can also use this method to remove the white spaces at the start and end of the String i.e
" hello ".trim(); // Result will be "hello"
Ugly, (and doesn't use your method call above) but works:
echo 'First day of the month: ' . date('m/d/y h:i a',(strtotime('this month',strtotime(date('m/01/y')))));
I met the same question, and solved it by using SSH protocol.
git clone [email protected]:micro/micro.git
Update June 2016
Felt compelled to add an answer having seen far too many SOF answers with dated or inadequate answers to very common problem - a good library and some solid example usage for both parse
and format
operations.
Use org.apache.httpcomponents.httpclient library. The library contains this org.apache.http.client.utils.URLEncodedUtils class utility.
For example, it is easy to download this dependency from Maven:
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.5</version>
</dependency>
For my purposes I only needed to parse
(read from query string to name-value pairs) and format
(read from name-value pairs to query string) query strings. However, there are equivalents for doing the same with a URI (see commented out line below).
// Required imports
import org.apache.http.NameValuePair;
import org.apache.http.client.utils.URLEncodedUtils;
import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;
import java.nio.charset.StandardCharsets;
// code snippet
public static void parseAndFormatExample() throws UnsupportedEncodingException {
final String queryString = "nonce=12345&redirectCallbackUrl=http://www.bbc.co.uk";
System.out.println(queryString);
// => nonce=12345&redirectCallbackUrl=http://www.bbc.co.uk
final List<NameValuePair> params =
URLEncodedUtils.parse(queryString, StandardCharsets.UTF_8);
// List<NameValuePair> params = URLEncodedUtils.parse(new URI(url), "UTF-8");
for (final NameValuePair param : params) {
System.out.println(param.getName() + " : " + param.getValue());
// => nonce : 12345
// => redirectCallbackUrl : http://www.bbc.co.uk
}
final String newQueryStringEncoded =
URLEncodedUtils.format(params, StandardCharsets.UTF_8);
// decode when printing to screen
final String newQueryStringDecoded =
URLDecoder.decode(newQueryStringEncoded, StandardCharsets.UTF_8.toString());
System.out.println(newQueryStringDecoded);
// => nonce=12345&redirectCallbackUrl=http://www.bbc.co.uk
}
This library did exactly what I needed and was able to replace some hacked custom code.
Instead of regular nx.draw you may want to use:
nx.draw_networkx(G[, pos, arrows, with_labels])
For example:
nx.draw_networkx(G, arrows=True, **options)
You can add options by initialising that ** variable like this:
options = {
'node_color': 'blue',
'node_size': 100,
'width': 3,
'arrowstyle': '-|>',
'arrowsize': 12,
}
Also some functions support the directed=True parameter
In this case this state is the default one:
G = nx.DiGraph(directed=True)
The networkx reference is found here.
These are the changes since python 2:
try:
1 / 0
except Exception as e: # (as opposed to except Exception, e:)
# ^ that will just look for two classes, Exception and e
# for the repr
print(repr(e))
# for just the message, or str(e), since print calls str under the hood
print(e)
# the arguments that the exception has been called with.
# the first one is usually the message. (OSError is different, though)
print(e.args)
You can look into the standard library module traceback for fancier stuff.
The problem is WHEN the event is added and EXECUTED via triggering
(the document
onload
property modification can be verified by examining the properties list).
When does this execute and modify onload
relative to the onload
event trigger:
document.addEventListener('load', ... );
before, during or after the load and/or render of the page's HTML?
This simple scURIple (cut & paste to URL) "works" w/o alert
ing as naively expected:
data:text/html;charset=utf-8,
<html content editable><head>
<script>
document.addEventListener('load', function(){ alert(42) } );
</script>
</head><body>goodbye universe - hello muiltiverse</body>
</html>
Does loading imply script contents have been executed?
A little out of this world expansion ...
Consider a slight modification:
data:text/html;charset=utf-8,
<html content editable><head>
<script>
if(confirm("expand mind?"))document.addEventListener('load', function(){ alert(42) } );
</script>
</head><body>goodbye universe - hello muiltiverse</body>
</html>
and whether the HTML has been loaded or not.
Rendering is certainly pending since goodbye universe - hello muiltiverse
is not seen on screen but, does not the confirm( ... )
have to be already loaded to be executed? ... and so document.addEventListener('load', ... )
... ?
In other words, can you execute code to check for self-loading when the code itself is not yet loaded?
Or, another way of looking at the situation, if the code is executable and executed then it has ALREADY been loaded as a done deal and to retroactively check when the transition occurred between not yet loaded and loaded is a priori fait accompli.
So which comes first: loading and executing the code or using the code's functionality though not loaded?
onload
as a window
property works because it is subordinate to the object and not self-referential as in the document
case, ie. it's the window
's contents, via document
, that determine the loaded question err situation.
PS.: When do the following fail to alert(...)
? (personally experienced gotcha's):
caveat: unless loading to the same window is really fast ... clobbering is the order of the day
so what is really needed below when using the same named window:
window.open(URIstr1,"w") .
addEventListener('load',
function(){ alert(42);
window.open(URIstr2,"w") .
addEventListener('load',
function(){ alert(43);
window.open(URIstr3,"w") .
addEventListener('load',
function(){ alert(44);
/* ... */
} )
} )
} )
alternatively, proceed each successive window.open
with:
alert("press Ok either after # alert shows pending load is done or inspired via divine intervention" );
data:text/html;charset=utf-8,
<html content editable><head><!-- tagging fluff --><script>
window.open(
"data:text/plain, has no DOM or" ,"Window"
) . addEventListener('load', function(){ alert(42) } )
window.open(
"data:text/plain, has no DOM but" ,"Window"
) . addEventListener('load', function(){ alert(4) } )
window.open(
"data:text/html,<html><body>has DOM and", "Window"
) . addEventListener('load', function(){ alert(2) } )
window.open(
"data:text/html,<html><body>has DOM and", "noWindow"
) . addEventListener('load', function(){ alert(1) } )
/* etc. including where body has onload=... in each appropriate open */
</script><!-- terminating fluff --></head></html>
which emphasize onload
differences as a document
or window
property.
Another caveat concerns preserving XSS, Cross Site Scripting, and SOP, Same Origin Policy rules which may allow loading an HTML URI but not modifying it's content to check for same. If a scURIple is run as a bookmarklet/scriplet from the same origin/site then there maybe success.
ie. From an arbitrary page, this link will do the load but not likely do alert('done')
:
<a href="javascript:window.open('view-source:http://google.ca') .
addEventListener( 'load', function(){ alert('done') } )"> src. vu </a>
but if the link is bookmarked and then clicked when viewing a google.ca
page, it does both.
test environment:
window.navigator.userAgent =
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.4) Gecko/2008102920 Firefox/3.0.4 (Splashtop-v1.2.17.0)
Found this works for me:
In the link:
<button type="button" class="btn btn-success" data-toggle="modal" data-target="#message<?php echo $row['id'];?>">Message</button>
In the modal:
<div id="message<?php echo $row['id'];?>" class="modal fade" role="dialog">
<div class="modal-dialog">
<!-- Modal content-->
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal">×</button>
<h4 class="modal-title">Modal Header</h4>
</div>
<div class="modal-body">
<p>Some text in the modal.</p>
<?php echo $row['id'];?>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
</div>
</div>
</div>
</div>
I've just stumbled upon this problem too, learning React, and solved it by showing spinner until the data is ready.
render() {
if (this.state.data === null) {
return (
<div className="MyView">
<Spinner/>
</div>
);
}
else {
return(
<div className="MyView">
<ReactJson src={this.state.data}/>
</div>
);
}
}
Use "
That should work.
The top answers here work, but I found something more elegant in Michael Hampton's answer to a related question. The "new" (firewalld-0.3.9-11+) --runtime-to-permanent
option to firewall-cmd
lets you create runtime rules and test them out before making them permanent:
$ firewall-cmd --zone=<zone> --add-port=2888/tcp
<Test it out>
$ firewall-cmd --runtime-to-permanent
Or to revert the runtime-only changes:
$ firewall-cmd --reload
Also see Antony Nguyen's comment. Apparently firewall-cmd --reload may not work properly in some cases where rules have been removed. In that case, he suggests restarting the firewalld service:
$ systemctl restart firewalld
LCASE or UCASE respectively.
Example:
SELECT UCASE(MyColumn) AS Upper, LCASE(MyColumn) AS Lower
FROM MyTable
I would suggest you have a look at BackgroundWorker. If you have a loop that large in your WinForm it will block and your app will look like it has hanged.
Look at BackgroundWorker.ReportProgress()
to see how to report progress back to the UI thread.
For example:
private void Calculate(int i)
{
double pow = Math.Pow(i, i);
}
private void button1_Click(object sender, EventArgs e)
{
progressBar1.Maximum = 100;
progressBar1.Step = 1;
progressBar1.Value = 0;
backgroundWorker.RunWorkerAsync();
}
private void backgroundWorker_DoWork(object sender, DoWorkEventArgs e)
{
var backgroundWorker = sender as BackgroundWorker;
for (int j = 0; j < 100000; j++)
{
Calculate(j);
backgroundWorker.ReportProgress((j * 100) / 100000);
}
}
private void backgroundWorker_ProgressChanged(object sender, ProgressChangedEventArgs e)
{
progressBar1.Value = e.ProgressPercentage;
}
private void backgroundWorker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
// TODO: do something with final calculation.
}
There is also a port of nano for windows, which is more more akin to notepad.exe than vim is
https://www.nano-editor.org/dist/win32-support/
Get the WINNT zip. Tested in Windows 7 works as expected
If you are using scrollview and content view,and you want to increase the height depending the TextView content height,then this piece of code will help you.
Hope this will help,it worked perfectly in iOS9.2
and of course set textview.scrollEnabled = NO;
-(void)adjustHeightOfTextView
{
//this pieces of code will helps to adjust the height of the uitextview View W.R.T content
//This block of code work will calculate the height of the textview text content height and calculate the height for the whole content of the view to be displayed.Height --> 400 is fixed,it will change if you change anything in the storybord.
CGSize textViewSize = [self.textview sizeThatFits:CGSizeMake(self.view.frame.size.width, self.view.frame.size.height)];//calulcate the content width and height
float textviewContentheight =textViewSize.height;
self.scrollview.contentSize = CGSizeMake(self.textview.frame.size.width,textviewContentheight + 400);//height value is passed
self.scrollview.frame =CGRectMake(self.scrollview.frame.origin.x, self.scrollview.frame.origin.y, self.scrollview.frame.size.width, textviewContentheight+400);
CGRect Frame = self.contentview.frame;
Frame.size.height = textviewContentheight + 400;
[self.contentview setFrame:Frame];
self.textview.frame =CGRectMake(self.textview.frame.origin.x, self.textview.frame.origin.y, self.textview.frame.size.width, textviewContentheight);
[ self.textview setContentSize:CGSizeMake( self.textview.frame.size.width,textviewContentheight)];
self.contenview_heightConstraint.constant =
self.scrollview.bounds.size.height;
NSLog(@"%f",self.contenview_heightConstraint.constant);
}
Log4net is saving into your project folder. Something like: \SolutionFolder\ProjectFolder\bin\SolutionConfiguration\logs\log-file.txt
.
Where:
Hope this helps!
I found an easy way to fetch the details of Tables and columns of a particular DB using SQL developer.
Select *FROM USER_TAB_COLUMNS
Here the best way
First : make new xml
file in res
/drawable
name it rounded_edit_text
then paste this:
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle" android:padding="10dp">
<solid android:color="#F9966B" />
<corners
android:bottomRightRadius="15dp"
android:bottomLeftRadius="15dp"
android:topLeftRadius="15dp"
android:topRightRadius="15dp" />
</shape>
Second: in res/layout copy and past following code (code of EditText
)
<EditText
android:id="@+id/txtdoctor"
android:layout_width="match_parent"
android:layout_height="30dp"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:background="@drawable/rounded_edit_text"
android:ems="10" >
<requestFocus />
</EditText>
Following is the solution I wrote up for performance reasons:
void hex2bin(const char* in, size_t len, unsigned char* out) {
static const unsigned char TBL[] = {
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 58, 59, 60, 61,
62, 63, 64, 10, 11, 12, 13, 14, 15, 71, 72, 73, 74, 75,
76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89,
90, 91, 92, 93, 94, 95, 96, 10, 11, 12, 13, 14, 15
};
static const unsigned char *LOOKUP = TBL - 48;
const char* end = in + len;
while(in < end) *(out++) = LOOKUP[*(in++)] << 4 | LOOKUP[*(in++)];
}
Example:
unsigned char seckey[32];
hex2bin("351aaaec0070d13d350afae2bc43b68c7e590268889869dde489f2f7988f3fee", 64, seckey);
/*
seckey = {
53, 26, 170, 236, 0, 112, 209, 61, 53, 10, 250, 226, 188, 67, 182, 140,
126, 89, 2, 104, 136, 152, 105, 221, 228, 137, 242, 247, 152, 143, 63, 238
};
*/
If you don't need to support lowercase:
static const unsigned char TBL[] = {
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 58, 59,
60, 61, 62, 63, 64, 10, 11, 12, 13, 14, 15
};
UTC
is definitely a valid timezone. It is simply an abbreviation for Coordinated Universal Time. In addition, remember that date_default_timezone_set
accepts one of the following values:
$timezones=array(
"America/Adak",
"America/Argentina/Buenos_Aires",
"America/Argentina/La_Rioja",
"America/Argentina/San_Luis",
"America/Atikokan",
"America/Belem",
"America/Boise",
"America/Caracas",
"America/Chihuahua",
"America/Cuiaba",
"America/Denver",
"America/El_Salvador",
"America/Godthab",
"America/Guatemala",
"America/Hermosillo",
"America/Indiana/Tell_City",
"America/Inuvik",
"America/Kentucky/Louisville",
"America/Lima",
"America/Managua",
"America/Mazatlan",
"America/Mexico_City",
"America/Montreal",
"America/Nome",
"America/Ojinaga",
"America/Port-au-Prince",
"America/Rainy_River",
"America/Rio_Branco",
"America/Santo_Domingo",
"America/St_Barthelemy",
"America/St_Vincent",
"America/Tijuana",
"America/Whitehorse",
"America/Anchorage",
"America/Argentina/Catamarca",
"America/Argentina/Mendoza",
"America/Argentina/Tucuman",
"America/Atka",
"America/Belize",
"America/Buenos_Aires",
"America/Catamarca",
"America/Coral_Harbour",
"America/Curacao",
"America/Detroit",
"America/Ensenada",
"America/Goose_Bay",
"America/Guayaquil",
"America/Indiana/Indianapolis",
"America/Indiana/Vevay",
"America/Iqaluit",
"America/Kentucky/Monticello",
"America/Los_Angeles",
"America/Manaus",
"America/Mendoza",
"America/Miquelon",
"America/Montserrat",
"America/Noronha",
"America/Panama",
"America/Port_of_Spain",
"America/Rankin_Inlet",
"America/Rosario",
"America/Sao_Paulo",
"America/St_Johns",
"America/Swift_Current",
"America/Toronto",
"America/Winnipeg",
"America/Anguilla",
"America/Argentina/ComodRivadavia",
"America/Argentina/Rio_Gallegos",
"America/Argentina/Ushuaia",
"America/Bahia",
"America/Blanc-Sablon",
"America/Cambridge_Bay",
"America/Cayenne",
"America/Cordoba",
"America/Danmarkshavn",
"America/Dominica",
"America/Fort_Wayne",
"America/Grand_Turk",
"America/Guyana",
"America/Indiana/Knox",
"America/Indiana/Vincennes",
"America/Jamaica",
"America/Knox_IN",
"America/Louisville",
"America/Marigot",
"America/Menominee",
"America/Moncton",
"America/Nassau",
"America/North_Dakota/Beulah",
"America/Pangnirtung",
"America/Porto_Acre",
"America/Recife",
"America/Santa_Isabel",
"America/Scoresbysund",
"America/St_Kitts",
"America/Tegucigalpa",
"America/Tortola",
"America/Yakutat",
"America/Antigua",
"America/Argentina/Cordoba",
"America/Argentina/Salta",
"America/Aruba",
"America/Bahia_Banderas",
"America/Boa_Vista",
"America/Campo_Grande",
"America/Cayman",
"America/Costa_Rica",
"America/Dawson",
"America/Edmonton",
"America/Fortaleza",
"America/Grenada",
"America/Halifax",
"America/Indiana/Marengo",
"America/Indiana/Winamac",
"America/Jujuy",
"America/Kralendijk",
"America/Lower_Princes",
"America/Martinique",
"America/Merida",
"America/Monterrey",
"America/New_York",
"America/North_Dakota/Center",
"America/Paramaribo",
"America/Porto_Velho",
"America/Regina",
"America/Santarem",
"America/Shiprock",
"America/St_Lucia",
"America/Thule",
"America/Vancouver",
"America/Yellowknife",
"America/Araguaina",
"America/Argentina/Jujuy",
"America/Argentina/San_Juan",
"America/Asuncion",
"America/Barbados",
"America/Bogota",
"America/Cancun",
"America/Chicago",
"America/Creston",
"America/Dawson_Creek",
"America/Eirunepe",
"America/Glace_Bay",
"America/Guadeloupe",
"America/Havana",
"America/Indiana/Petersburg",
"America/Indianapolis",
"America/Juneau",
"America/La_Paz",
"America/Maceio",
"America/Matamoros",
"America/Metlakatla",
"America/Montevideo",
"America/Nipigon",
"America/North_Dakota/New_Salem",
"America/Phoenix",
"America/Puerto_Rico",
"America/Resolute",
"America/Santiago",
"America/Sitka",
"America/St_Thomas",
"America/Thunder_Bay",
"America/Virgin",
"Indian/Antananarivo",
"Indian/Kerguelen",
"Indian/Reunion",
"Australia/ACT",
"Australia/Currie",
"Australia/Lindeman",
"Australia/Perth",
"Australia/Victoria",
"Europe/Amsterdam",
"Europe/Berlin",
"Europe/Chisinau",
"Europe/Helsinki",
"Europe/Kiev",
"Europe/Madrid",
"Europe/Moscow",
"Europe/Prague",
"Europe/Sarajevo",
"Europe/Tallinn",
"Europe/Vatican",
"Europe/Zagreb",
"Pacific/Apia",
"Pacific/Efate",
"Pacific/Galapagos",
"Pacific/Johnston",
"Pacific/Marquesas",
"Pacific/Noumea",
"Pacific/Ponape",
"Pacific/Tahiti",
"Pacific/Wallis",
"Indian/Chagos",
"Indian/Mahe",
"Australia/Adelaide",
"Australia/Darwin",
"Australia/Lord_Howe",
"Australia/Queensland",
"Australia/West",
"Europe/Andorra",
"Europe/Bratislava",
"Europe/Copenhagen",
"Europe/Isle_of_Man",
"Europe/Lisbon",
"Europe/Malta",
"Europe/Nicosia",
"Europe/Riga",
"Europe/Simferopol",
"Europe/Tirane",
"Europe/Vienna",
"Europe/Zaporozhye",
"Pacific/Auckland",
"Pacific/Enderbury",
"Pacific/Gambier",
"Pacific/Kiritimati",
"Pacific/Midway",
"Pacific/Pago_Pago",
"Pacific/Port_Moresby",
"Pacific/Tarawa",
"Pacific/Yap",
"Africa/Abidjan",
"Africa/Asmera",
"Africa/Blantyre",
"Africa/Ceuta",
"Africa/Douala",
"Africa/Johannesburg",
"Africa/Kinshasa",
"Africa/Lubumbashi",
"Africa/Mbabane",
"Africa/Niamey",
"Africa/Timbuktu",
"Africa/Accra",
"Africa/Bamako",
"Africa/Brazzaville",
"Africa/Conakry",
"Africa/El_Aaiun",
"Africa/Juba",
"Africa/Lagos",
"Africa/Lusaka",
"Africa/Mogadishu",
"Africa/Nouakchott",
"Africa/Tripoli",
"Africa/Addis_Ababa",
"Africa/Bangui",
"Africa/Bujumbura",
"Africa/Dakar",
"Africa/Freetown",
"Africa/Kampala",
"Africa/Libreville",
"Africa/Malabo",
"Africa/Monrovia",
"Africa/Ouagadougou",
"Africa/Tunis",
"Africa/Algiers",
"Africa/Banjul",
"Africa/Cairo",
"Africa/Dar_es_Salaam",
"Africa/Gaborone",
"Africa/Khartoum",
"Africa/Lome",
"Africa/Maputo",
"Africa/Nairobi",
"Africa/Porto-Novo",
"Africa/Windhoek",
"Africa/Asmara",
"Africa/Bissau",
"Africa/Casablanca",
"Africa/Djibouti",
"Africa/Harare",
"Africa/Kigali",
"Africa/Luanda",
"Africa/Maseru",
"Africa/Ndjamena",
"Africa/Sao_Tome",
"Atlantic/Azores",
"Atlantic/Faroe",
"Atlantic/St_Helena",
"Atlantic/Bermuda",
"Atlantic/Jan_Mayen",
"Atlantic/Stanley",
"Atlantic/Canary",
"Atlantic/Madeira",
"Atlantic/Cape_Verde",
"Atlantic/Reykjavik",
"Atlantic/Faeroe",
"Atlantic/South_Georgia",
"Asia/Aden",
"Asia/Aqtobe",
"Asia/Baku",
"Asia/Calcutta",
"Asia/Dacca",
"Asia/Dushanbe",
"Asia/Hong_Kong",
"Asia/Jayapura",
"Asia/Kashgar",
"Asia/Kuala_Lumpur",
"Asia/Magadan",
"Asia/Novokuznetsk",
"Asia/Pontianak",
"Asia/Riyadh",
"Asia/Shanghai",
"Asia/Tehran",
"Asia/Ujung_Pandang",
"Asia/Vladivostok",
"Asia/Almaty",
"Asia/Ashgabat",
"Asia/Bangkok",
"Asia/Choibalsan",
"Asia/Damascus",
"Asia/Gaza",
"Asia/Hovd",
"Asia/Jerusalem",
"Asia/Kathmandu",
"Asia/Kuching",
"Asia/Makassar",
"Asia/Novosibirsk",
"Asia/Pyongyang",
"Asia/Saigon",
"Asia/Singapore",
"Asia/Tel_Aviv",
"Asia/Ulaanbaatar",
"Asia/Yakutsk",
"Asia/Amman",
"Asia/Ashkhabad",
"Asia/Beirut",
"Asia/Chongqing",
"Asia/Dhaka",
"Asia/Harbin",
"Asia/Irkutsk",
"Asia/Kabul",
"Asia/Katmandu",
"Asia/Kuwait",
"Asia/Manila",
"Asia/Omsk",
"Asia/Qatar",
"Asia/Sakhalin",
"Asia/Taipei",
"Asia/Thimbu",
"Asia/Ulan_Bator",
"Asia/Yekaterinburg",
"Asia/Anadyr",
"Asia/Baghdad",
"Asia/Bishkek",
"Asia/Chungking",
"Asia/Dili",
"Asia/Hebron",
"Asia/Istanbul",
"Asia/Kamchatka",
"Asia/Kolkata",
"Asia/Macao",
"Asia/Muscat",
"Asia/Oral",
"Asia/Qyzylorda",
"Asia/Samarkand",
"Asia/Tashkent",
"Asia/Thimphu",
"Asia/Urumqi",
"Asia/Yerevan",
"Asia/Aqtau",
"Asia/Bahrain",
"Asia/Brunei",
"Asia/Colombo",
"Asia/Dubai",
"Asia/Ho_Chi_Minh",
"Asia/Jakarta",
"Asia/Karachi",
"Asia/Krasnoyarsk",
"Asia/Macau",
"Asia/Nicosia",
"Asia/Phnom_Penh",
"Asia/Rangoon",
"Asia/Seoul",
"Asia/Tbilisi",
"Asia/Tokyo",
"Asia/Vientiane",
"Australia/Canberra",
"Australia/LHI",
"Australia/NSW",
"Australia/Tasmania",
"Australia/Broken_Hill",
"Australia/Hobart",
"Australia/North",
"Australia/Sydney",
"Pacific/Chuuk",
"Pacific/Fiji",
"Pacific/Guam",
"Pacific/Kwajalein",
"Pacific/Niue",
"Pacific/Pitcairn",
"Pacific/Saipan",
"Pacific/Truk",
"Pacific/Chatham",
"Pacific/Fakaofo",
"Pacific/Guadalcanal",
"Pacific/Kosrae",
"Pacific/Nauru",
"Pacific/Palau",
"Pacific/Rarotonga",
"Pacific/Tongatapu",
"Pacific/Easter",
"Pacific/Funafuti",
"Pacific/Honolulu",
"Pacific/Majuro",
"Pacific/Norfolk",
"Pacific/Pohnpei",
"Pacific/Samoa",
"Pacific/Wake",
"Antarctica/Casey",
"Antarctica/McMurdo",
"Antarctica/Vostok",
"Antarctica/Davis",
"Antarctica/Palmer",
"Antarctica/DumontDUrville",
"Antarctica/Rothera",
"Antarctica/Macquarie",
"Antarctica/South_Pole",
"Antarctica/Mawson",
"Antarctica/Syowa",
"Arctic/Longyearbyen",
"Europe/Athens",
"Europe/Brussels",
"Europe/Dublin",
"Europe/Istanbul",
"Europe/Ljubljana",
"Europe/Mariehamn",
"Europe/Oslo",
"Europe/Rome",
"Europe/Skopje",
"Europe/Tiraspol",
"Europe/Vilnius",
"Europe/Zurich",
"Europe/Belfast",
"Europe/Bucharest",
"Europe/Gibraltar",
"Europe/Jersey",
"Europe/London",
"Europe/Minsk",
"Europe/Paris",
"Europe/Samara",
"Europe/Sofia",
"Europe/Uzhgorod",
"Europe/Volgograd",
"Europe/Belgrade",
"Europe/Budapest",
"Europe/Guernsey",
"Europe/Kaliningrad",
"Europe/Luxembourg",
"Europe/Monaco",
"Europe/Podgorica",
"Europe/San_Marino",
"Europe/Stockholm",
"Europe/Vaduz",
"Europe/Warsaw",
"Indian/Cocos",
"Indian/Mauritius",
"Indian/Christmas",
"Indian/Maldives",
"Indian/Comoro",
"Indian/Mayotte",
"Australia/Brisbane",
"Australia/Eucla",
"Australia/Melbourne",
"Australia/South",
"Australia/Yancowinna",
);
Timezones in PHP at http://www.php.net/manual/en/timezones.php
A Thread dump is a dump of all threads's stack traces, i.e. as if each Thread suddenly threw an Exception and printStackTrace'ed that. This is so that you can see what each thread is doing at some specific point, and is for example very good to catch deadlocks.
A heap dump is a "binary dump" of the full memory the JVM is using, and is for example useful if you need to know why you are running out of memory - in the heap dump you could for example see that you have one billion User objects, even though you should only have a thousand, which points to a memory retention problem.
I was also having the problem while running the carthage script in the build phase. (Xcode 9) I get that dialog for each and every framework I had added plus the app itself. You can see a very dark shadow growing. I could bypass it by entering the password every time and hitting "Always Allow".
No need to add commands anymore. For those who are new to Visual Studio Code and searching for an easy way to format code on saving, kindly follow the below steps.
[Cmd+,]
in Mac or using the below screenshot.You are done. Thank you.
In my case this was because a file named ociw32.dll had been placed in c:\windows\system32. This is however only allowed to exist in c:\oracle\11.2.0.3\bin.
Deleting the file from system32, which had been placed there by an installation of Crystal Reports, fixed this issue
For the Single line and double line break here are the following codes.
Single break: %0D0A
Double break: %0D0A%0D0A
As @xecaps12 said, the simplest/efficient approach is to change your Maven settings file (~/.m2/settings.xml) but if it is a default settings for you, you can also set it like that
<profile>
<id>downloadSources</id>
<activation>
<activeByDefault>true</activeByDefault>
</activation>
<properties>
<downloadSources>true</downloadSources>
<downloadJavadocs>true</downloadJavadocs>
</properties>
</profile>
Based on some comments above below is the code how to remove an object based on a key name and key value
var items = [
{ "id": 3.1, "name": "test 3.1"},
{ "id": 22, "name": "test 3.1" },
{ "id": 23, "name": "changed test 23" }
]
function removeByKey(array, params){
array.some(function(item, index) {
return (array[index][params.key] === params.value) ? !!(array.splice(index, 1)) : false;
});
return array;
}
var removed = removeByKey(items, {
key: 'id',
value: 23
});
console.log(removed);
In most of the cases it’s only a need for the transpiler/bundler, which might not be configured to work with JSX files, but with JS! So you are forced to use JS files instead of JSX.
And since react is just a library for javascript, it makes no difference for you to choose between JSX or JS. They’re completely interchangeable!
In some cases users/developers might also choose JSX over JS, because of code highlighting, but the most of the newer editors are also viewing the react syntax correctly in JS files.
In separate terminal windows do the following:
Start the broker:
mosquitto
Start the command line subscriber:
mosquitto_sub -v -t 'test/topic'
Publish test message with the command line publisher:
mosquitto_pub -t 'test/topic' -m 'helloWorld'
As well as seeing both the subscriber and publisher connection messages in the broker terminal the following should be printed in the subscriber terminal:
test/topic helloWorld
The entire new
expression is an object reference, so methods can be invoked on it:
public class A {
public static void main(String[] arg)
{
new Thread()
{
public void run() {
System.out.println("blah");
}
}.start();
}
}
You have to do this:
class Bar : public Foo
{
// ...
}
The default inheritance type of a class
in C++ is private
, so any public
and protected
members from the base class are limited to private
. struct
inheritance on the other hand is public
by default.
I like the one from HPP comment, it can be used anywhere without any parameter:
new Handler(Looper.getMainLooper()).post(new Runnable() {
@Override
public void run() {
Log.d("UI thread", "I am the UI thread");
}
});
This may not be the most popular or efficient method, but I tend to forgo strong datatypes in SQLite since they are all essentially dumped in as strings anyway.
I've written a thin C# wrapper around the SQLite library before (when using SQLite with C#, of course) to handle insertions and extractions to and from SQLite as if I were dealing with DateTime objects.
Another method utilizing the dplyr package:
library(dplyr)
df <- mtcars %>%
filter(mpg > 25)
Without the chain (%>%) operator:
library(dplyr)
df <- filter(mtcars, mpg > 25)
First subtract the pivot point (cx,cy)
, then rotate it, then add the point again.
Untested:
POINT rotate_point(float cx,float cy,float angle,POINT p)
{
float s = sin(angle);
float c = cos(angle);
// translate point back to origin:
p.x -= cx;
p.y -= cy;
// rotate point
float xnew = p.x * c - p.y * s;
float ynew = p.x * s + p.y * c;
// translate point back:
p.x = xnew + cx;
p.y = ynew + cy;
return p;
}
awk '{ saved = $1; $1 = ""; print substr($0, 2), saved }'
Setting the first field to ""
leaves a single copy of OFS
at the start of $0
. Assuming that OFS
is only a single character (by default, it's a single space), we can remove it with substr($0, 2)
. Then we append the saved copy of $1
.
I am getting the error (...) javax.naming.NameNotFoundException: greetJndi not bound
This means that nothing is bound to the jndi name greetJndi
, very likely because of a deployment problem given the incredibly low quality of this tutorial (check the server logs). I'll come back on this.
Is there any specific directory structure to deploy in JBoss?
The internal structure of the ejb-jar
is supposed to be like this (using the poor naming conventions and the default package as in the mentioned link):
. +-- greetBean.java +-- greetHome.java +-- greetRemote.java +-- META-INF +-- ejb-jar.xml +-- jboss.xml
But as already mentioned, this tutorial is full of mistakes:
<enterprise-beans>]
<-- HERE) in the ejb-jar.xml
(!)PUBLIC
in the ejb-jar.xml
and jboss.xml
(!!)jboss.xml
is incorrect, it should contain a session
element instead of entity
(!!!)Here is a "fixed" version of the ejb-jar.xml
:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE ejb-jar PUBLIC "-//Sun Microsystems, Inc.//DTD Enterprise JavaBeans 2.0//EN" "http://java.sun.com/dtd/ejb-jar_2_0.dtd">
<ejb-jar>
<enterprise-beans>
<session>
<ejb-name>greetBean</ejb-name>
<home>greetHome</home>
<remote>greetRemote</remote>
<ejb-class>greetBean</ejb-class>
<session-type>Stateless</session-type>
<transaction-type>Container</transaction-type>
</session>
</enterprise-beans>
</ejb-jar>
And of the jboss.xml
:
<?xml version="1.0"?>
<!DOCTYPE jboss PUBLIC "-//JBoss//DTD JBOSS 3.2//EN" "http://www.jboss.org/j2ee/dtd/jboss_3_2.dtd">
<jboss>
<enterprise-beans>
<session>
<ejb-name>greetBean</ejb-name>
<jndi-name>greetJndi</jndi-name>
</session>
</enterprise-beans>
</jboss>
After doing these changes and repackaging the ejb-jar, I was able to successfully deploy it:
21:48:06,512 INFO [Ejb3DependenciesDeployer] Encountered deployment AbstractVFSDeploymentContext@5060868{vfszip:/home/pascal/opt/jboss-5.1.0.GA/server/default/deploy/greet.jar/} 21:48:06,534 INFO [EjbDeployer] installing bean: ejb/#greetBean,uid19981448 21:48:06,534 INFO [EjbDeployer] with dependencies: 21:48:06,534 INFO [EjbDeployer] and supplies: 21:48:06,534 INFO [EjbDeployer] jndi:greetJndi 21:48:06,624 INFO [EjbModule] Deploying greetBean 21:48:06,661 WARN [EjbModule] EJB configured to bypass security. Please verify if this is intended. Bean=greetBean Deployment=vfszip:/home/pascal/opt/jboss-5.1.0.GA/server/default/deploy/greet.jar/ 21:48:06,805 INFO [ProxyFactory] Bound EJB Home 'greetBean' to jndi 'greetJndi'
That tutorial needs significant improvement; I'd advise from staying away from roseindia.net.
What you could do is copy the code from tkinter.py
into a file called mytkinter.py
, then do this code:
import tkinter, mytkinter
root = tkinter.Tk()
window = mytkinter.Tk()
button = mytkinter.Button(window, text="Search", width = 7,
command=cmd)
button2 = tkinter.Button(root, text="Search", width = 7,
command=cmdtwo)
And you have two windows which don't collide!
To get the key IDs (8 bytes, 16 hex digits), this is the command which worked for me in GPG 1.4.16, 2.1.18 and 2.2.19:
gpg --list-packets <key.asc | awk '$1=="keyid:"{print$2}'
To get some more information (in addition to the key ID):
gpg --list-packets <key.asc
To get even more information:
gpg --list-packets -vvv --debug 0x2 <key.asc
The command
gpg --dry-run --import <key.asc
also works in all 3 versions, but in GPG 1.4.16 it prints only a short (4 bytes, 8 hex digits) key ID, so it's less secure to identify keys.
Some commands in other answers (e.g. gpg --show-keys
, gpg --with-fingerprint
, gpg --import --import-options show-only
) don't work in some of the 3 GPG versions above, thus they are not portable when targeting multiple versions of GPG.
Read this thread R - boolean operators && and ||.
Basically, the &
is vectorized, i.e. it acts on each element of the comparison returning a logical array with the same dimension as the input. &&
is not, returning a single logical.
Followed Mark's advise and did this to set the default number formatting to text in the whole workbook:
$objPHPExcel = new PHPExcel();
$objPHPExcel->getDefaultStyle()
->getNumberFormat()
->setFormatCode(
PHPExcel_Style_NumberFormat::FORMAT_TEXT
);
And it works flawlessly. Thank you, Mark Baker.
Answer 1 : Yes it called upcasting but the way you do it is not modern way. Upcasting can be performed implicitly you don't need any conversion. So just writing Employee emp = mgr; is enough for upcasting.
Answer 2 : If you create object of Manager class we can say that manager is an employee. Because class Manager : Employee depicts Is-A relationship between Employee Class and Manager Class. So we can say that every manager is an employee.
But if we create object of Employee class we can not say that this employee is manager because class Employee is a class which is not inheriting any other class. So you can not directly downcast that Employee Class object to Manager Class object.
So answer is, if you want to downcast from Employee Class object to Manager Class object, first you must have object of Manager Class first then you can upcast it and then you can downcast it.
One special case for this is if you have used a construction like the following in your ~/.muttrc:
# Reset From email to default
send-hook . "my_hdr From: Real Name <[email protected]>"
This send-hook will override either of these:
mutt -e "set [email protected]"
mutt -e "my_hdr From: Other Name <[email protected]>"
Your emails will still go out with the header:
From: Real Name <[email protected]>
In this case, the only command line solution I've found is actually overriding the send-hook itself:
mutt -e "send-hook . \"my_hdr From: Other Name <[email protected]>\""
clearInterval is one option:
var interval = setInterval(doStuff, 2000); // 2000 ms = start after 2sec
function doStuff() {
alert('this is a 2 second warning');
clearInterval(interval);
}
This gives me the most reliable results:
Sub RangeToPicture()
Dim FileName As String: FileName = "C:\file.bmp"
Dim rPrt As Range: Set rPrt = ThisWorkbook.Sheets("Sheet1").Range("A1:C6")
Dim chtObj As ChartObject
rPrt.CopyPicture xlScreen, xlBitmap
Set chtObj = ActiveSheet.ChartObjects.Add(1, 1, rPrt.Width, rPrt.Height)
chtObj.Activate
ActiveChart.Paste
ActiveChart.Export FileName
chtObj.Delete
End Sub
In Xcode Version 6.3.2 , I solved the exactly same problem by adding Library libxml2.dylib and libz.dylib In Link Binary With Libraries !
For Windows ping -a 10.10.10.10
The problem with all these is they don't address if the lines of text are long and much wider that the div overflow:auto does not ad a scroll bar that works right. Here is the perfect solution I found:
Create two divs. An inner div that is wide enough to handle the widest line of text and then a smaller outer one which acts at the holder for the inner div:
<div style="border:2px inset #AAA;cursor:text;height:120px;overflow:auto;width:500px;">
<div style="width:800px;">
now really long text like this can be put in the text area and it will really <br/>
look and act more like a real text area bla bla bla <br/>
</div>
</div>
Using Swift 3 or 4 you can access these http request for sever communication.
// For POST data to request
func postAction() {
//declare parameter as a dictionary which contains string as key and value combination. considering inputs are valid
let parameters = ["id": 13, "name": "jack"] as [String : Any]
//create the url with URL
let url = URL(string: "www.requestURL.php")! //change the url
//create the session object
let session = URLSession.shared
//now create the URLRequest object using the url object
var request = URLRequest(url: url)
request.httpMethod = "POST" //set http method as POST
do {
request.httpBody = try JSONSerialization.data(withJSONObject: parameters, options: .prettyPrinted) // pass dictionary to nsdata object and set it as request body
} catch let error {
print(error.localizedDescription)
}
request.addValue("application/json", forHTTPHeaderField: "Content-Type")
request.addValue("application/json", forHTTPHeaderField: "Accept")
//create dataTask using the session object to send data to the server
let task = session.dataTask(with: request as URLRequest, completionHandler: { data, response, error in
guard error == nil else {
return
}
guard let data = data else {
return
}
do {
//create json object from data
if let json = try JSONSerialization.jsonObject(with: data, options: .mutableContainers) as? [String: Any] {
print(json)
// handle json...
}
} catch let error {
print(error.localizedDescription)
}
})
task.resume() }
// For get the data from request
func GetRequest() {
let urlString = URL(string: "http://www.requestURL.php") //change the url
if let url = urlString {
let task = URLSession.shared.dataTask(with: url) { (data, response, error) in
if error != nil {
print(error ?? "")
} else {
if let responceData = data {
print(responceData) //JSONSerialization
do {
//create json object from data
if let json = try JSONSerialization.jsonObject(with:responceData, options: .mutableContainers) as? [String: Any] {
print(json)
// handle json...
}
} catch let error {
print(error.localizedDescription)
}
}
}
}
task.resume()
}
}
// For get the download content like image or video from request
func downloadTask() {
// Create destination URL
let documentsUrl:URL = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first as URL!
let destinationFileUrl = documentsUrl.appendingPathComponent("downloadedFile.jpg")
//Create URL to the source file you want to download
let fileURL = URL(string: "http://placehold.it/120x120&text=image1")
let sessionConfig = URLSessionConfiguration.default
let session = URLSession(configuration: sessionConfig)
let request = URLRequest(url:fileURL!)
let task = session.downloadTask(with: request) { (tempLocalUrl, response, error) in
if let tempLocalUrl = tempLocalUrl, error == nil {
// Success
if let statusCode = (response as? HTTPURLResponse)?.statusCode {
print("Successfully downloaded. Status code: \(statusCode)")
}
do {
try FileManager.default.copyItem(at: tempLocalUrl, to: destinationFileUrl)
} catch (let writeError) {
print("Error creating a file \(destinationFileUrl) : \(writeError)")
}
} else {
print("Error took place while downloading a file. Error description: %@", error?.localizedDescription ?? "");
}
}
task.resume()
}
DataFrame's read_excel
method is like read_csv
method:
dfs = pd.read_excel(xlsx_file, sheetname="sheet1")
Help on function read_excel in module pandas.io.excel:
read_excel(io, sheetname=0, header=0, skiprows=None, skip_footer=0, index_col=None, names=None, parse_cols=None, parse_dates=False, date_parser=None, na_values=None, thousands=None, convert_float=True, has_index_names=None, converters=None, true_values=None, false_values=None, engine=None, squeeze=False, **kwds)
Read an Excel table into a pandas DataFrame
Parameters
----------
io : string, path object (pathlib.Path or py._path.local.LocalPath),
file-like object, pandas ExcelFile, or xlrd workbook.
The string could be a URL. Valid URL schemes include http, ftp, s3,
and file. For file URLs, a host is expected. For instance, a local
file could be file://localhost/path/to/workbook.xlsx
sheetname : string, int, mixed list of strings/ints, or None, default 0
Strings are used for sheet names, Integers are used in zero-indexed
sheet positions.
Lists of strings/integers are used to request multiple sheets.
Specify None to get all sheets.
str|int -> DataFrame is returned.
list|None -> Dict of DataFrames is returned, with keys representing
sheets.
Available Cases
* Defaults to 0 -> 1st sheet as a DataFrame
* 1 -> 2nd sheet as a DataFrame
* "Sheet1" -> 1st sheet as a DataFrame
* [0,1,"Sheet5"] -> 1st, 2nd & 5th sheet as a dictionary of DataFrames
* None -> All sheets as a dictionary of DataFrames
header : int, list of ints, default 0
Row (0-indexed) to use for the column labels of the parsed
DataFrame. If a list of integers is passed those row positions will
be combined into a ``MultiIndex``
skiprows : list-like
Rows to skip at the beginning (0-indexed)
skip_footer : int, default 0
Rows at the end to skip (0-indexed)
index_col : int, list of ints, default None
Column (0-indexed) to use as the row labels of the DataFrame.
Pass None if there is no such column. If a list is passed,
those columns will be combined into a ``MultiIndex``
names : array-like, default None
List of column names to use. If file contains no header row,
then you should explicitly pass header=None
converters : dict, default None
Dict of functions for converting values in certain columns. Keys can
either be integers or column labels, values are functions that take one
input argument, the Excel cell content, and return the transformed
content.
true_values : list, default None
Values to consider as True
.. versionadded:: 0.19.0
false_values : list, default None
Values to consider as False
.. versionadded:: 0.19.0
parse_cols : int or list, default None
* If None then parse all columns,
* If int then indicates last column to be parsed
* If list of ints then indicates list of column numbers to be parsed
* If string then indicates comma separated list of column names and
column ranges (e.g. "A:E" or "A,C,E:F")
squeeze : boolean, default False
If the parsed data only contains one column then return a Series
na_values : scalar, str, list-like, or dict, default None
Additional strings to recognize as NA/NaN. If dict passed, specific
per-column NA values. By default the following values are interpreted
as NaN: '', '#N/A', '#N/A N/A', '#NA', '-1.#IND', '-1.#QNAN', '-NaN', '-nan',
'1.#IND', '1.#QNAN', 'N/A', 'NA', 'NULL', 'NaN', 'nan'.
thousands : str, default None
Thousands separator for parsing string columns to numeric. Note that
this parameter is only necessary for columns stored as TEXT in Excel,
any numeric columns will automatically be parsed, regardless of display
format.
keep_default_na : bool, default True
If na_values are specified and keep_default_na is False the default NaN
values are overridden, otherwise they're appended to.
verbose : boolean, default False
Indicate number of NA values placed in non-numeric columns
engine: string, default None
If io is not a buffer or path, this must be set to identify io.
Acceptable values are None or xlrd
convert_float : boolean, default True
convert integral floats to int (i.e., 1.0 --> 1). If False, all numeric
data will be read in as floats: Excel stores all numbers as floats
internally
has_index_names : boolean, default None
DEPRECATED: for version 0.17+ index names will be automatically
inferred based on index_col. To read Excel output from 0.16.2 and
prior that had saved index names, use True.
Returns
-------
parsed : DataFrame or Dict of DataFrames
DataFrame from the passed in Excel file. See notes in sheetname
argument for more information on when a Dict of Dataframes is returned.
enum can reduce many types of "errors" and make the code more manageable
#define STATE_GOOD 0
#define STATE_BAD 1
#define STATE_OTHER 2
int STATE = STATE_OTHER
The definition has no constraints. It's simply just a substitution. It is not able to limit all conditions of the state. When the STATE is assigned to 5, the program will be wrong, because there is no matching state. But the compiler is not going to warn STATE = 5
So it is better to use like this
typedef enum SampleState {
SampleStateGood = 0,
SampleStateBad,
SampleStateOther
} SampleState;
SampleState state = SampleStateGood;
I have made a small demo of NumberPicker. This may not be perfect but you can use and modify the same.
public class MainActivity extends Activity implements NumberPicker.OnValueChangeListener
{
private static TextView tv;
static Dialog d ;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
tv = (TextView) findViewById(R.id.textView1);
Button b = (Button) findViewById(R.id.button11);
b.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v) {
show();
}
});
}
@Override
public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
Log.i("value is",""+newVal);
}
public void show()
{
final Dialog d = new Dialog(MainActivity.this);
d.setTitle("NumberPicker");
d.setContentView(R.layout.dialog);
Button b1 = (Button) d.findViewById(R.id.button1);
Button b2 = (Button) d.findViewById(R.id.button2);
final NumberPicker np = (NumberPicker) d.findViewById(R.id.numberPicker1);
np.setMaxValue(100);
np.setMinValue(0);
np.setWrapSelectorWheel(false);
np.setOnValueChangedListener(this);
b1.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v) {
tv.setText(String.valueOf(np.getValue()));
d.dismiss();
}
});
b2.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v) {
d.dismiss();
}
});
d.show();
}
}
activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/hello_world" />
<Button
android:id="@+id/button11"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:text="Open" />
</RelativeLayout>
dialog.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<NumberPicker
android:id="@+id/numberPicker1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="64dp" />
<Button
android:id="@+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/numberPicker1"
android:layout_marginLeft="20dp"
android:layout_marginTop="98dp"
android:layout_toRightOf="@+id/numberPicker1"
android:text="Cancel" />
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/button2"
android:layout_alignBottom="@+id/button2"
android:layout_marginRight="16dp"
android:layout_toLeftOf="@+id/numberPicker1"
android:text="Set" />
</RelativeLayout>
Edit:
under res/values/dimens.xml
<resources>
<!-- Default screen margins, per the Android Design guidelines. -->
<dimen name="activity_horizontal_margin">16dp</dimen>
<dimen name="activity_vertical_margin">16dp</dimen>
</resources>
You can simply use DataColumnCollection.IndexOf
So that you can get the index of the required column by name then use it with your row:
row[dt.Columns.IndexOf("ColumnName")] = columnValue;
I don't think your question is very clear, this code assumes that if you're going to include the -domain parameter, it's always 'named' (i.e. dostuff computername arg2 -domain domain); this also makes the computername parameter mandatory.
Function DoStuff(){
param(
[Parameter(Mandatory=$true)][string]$computername,
[Parameter(Mandatory=$false)][string]$arg2,
[Parameter(Mandatory=$false)][string]$domain
)
if(!($domain)){
$domain = 'domain1'
}
write-host $domain
if($arg2){
write-host "arg2 present... executing script block"
}
else{
write-host "arg2 missing... exiting or whatever"
}
}
You can also use vbNewLine
Object as in
MessageLabel.Text = "The Sales tax was:" & Format(douSales_tax, "Currency") & "." & vbNewLine & "The sale person: " & mstrSalesPerson
You can use -O-
(uppercase o) to redirect content to the stdout (standard output) or to a file (even special files like /dev/null
/dev/stderr
/dev/stdout
)
wget -O- http://yourdomain.com
Or:
wget -O- http://yourdomain.com > /dev/null
Or: (same result as last command)
wget -O/dev/null http://yourdomain.com
You can also use in code behind like this way
ClientScript.RegisterStartupScript(this.Page.GetType(), "",
"window.open('page.aspx','Graph','height=400,width=500');", true);
To send a custom value called my_hero
to the server using a normal form submit:
JSON:
"heroes": [
{"id":"iron", "label":"Iron Man Rocks!"},
{"id":"super", "label":"Superman Rocks!"}
]
HTML:
<select ng-model="hero" ng-options="obj.id as obj.label for obj in heroes"></select>
<input type="hidden" name="my_hero" value="{{hero}}" />
The server will receive either iron
or super
as the value of my_hero
.
This is similar to the answer by @neemzy, but specifying separate data for the value
attribute.
[HttpPost]
public JsonResult ContactAdd(ContactViewModel contactViewModel)
{
if (ModelState.IsValid)
{
var job = new Job { Contact = new Contact() };
Mapper.Map(contactViewModel, job);
Mapper.Map(contactViewModel, job.Contact);
_db.Jobs.Add(job);
_db.SaveChanges();
//you do not even need this line of code,200 is the default for ASP.NET MVC as long as no exceptions were thrown
//Response.StatusCode = (int)HttpStatusCode.OK;
return Json(new { jobId = job.JobId });
}
else
{
Response.StatusCode = (int)HttpStatusCode.BadRequest;
return Json(new { jobId = -1 });
}
}
I ran into this problem since I've been doing React Native since the early days. Google has deprecated the commandline tools and insists on Android studio. The solution for me was to remove the commandline tools
rm -rf /usr/local/Cellar/android-sdk
rm /usr/local/bin/android
open up AS install sdk v6 as instructed https://facebook.github.io/react-native/docs/getting-started.html#1-install-android-studio
make a new AVD and it'll launch without error
The latest verion (I'm using 1.9.5) solve this problem by adding an option of "Break locks" on the clean up menu. Just make sure this check box is selected when doing clean up.
An example with VBScript (.vbs)
Sub sety(wsh, action, typey, vary, value)
Dim wu
Set wu = wsh.Environment(typey)
wui = wu.Item(vary)
Select Case action
Case "ls"
WScript.Echo wui
Case "del"
On Error Resume Next
wu.remove(vary)
On Error Goto 0
Case "set"
wu.Item(vary) = value
Case "add"
If wui = "" Then
wu.Item(vary) = value
ElseIf InStr(UCase(";" & wui & ";"), UCase(";" & value & ";")) = 0 Then
wu.Item(vary) = value & ";" & wui
End If
Case Else
WScript.Echo "Bad action"
End Select
End Sub
Dim wsh, args
Set wsh = WScript.CreateObject("WScript.Shell")
Set args = WScript.Arguments
Select Case WScript.Arguments.Length
Case 3
value = ""
Case 4
value = args(3)
Case Else
WScript.Echo "Arguments - 0: ls,del,set,add; 1: user,system, 2: variable; 3: value"
value = "```"
End Select
If Not value = "```" Then
' 0: ls,del,set,add; 1: user,system, 2: variable; 3: value
sety wsh, args(0), args(1), UCase(args(2)), value
End If
Here is a simplistic example of streaming a file:
using System.IO;
using Microsoft.AspNetCore.Mvc;
[HttpGet("{id}")]
public async Task<FileStreamResult> Download(int id)
{
var path = "<Get the file path using the ID>";
var stream = File.OpenRead(path);
return new FileStreamResult(stream, "application/octet-stream");
}
Note:
Be sure to use FileStreamResult
from Microsoft.AspNetCore.Mvc
and not from System.Web.Mvc
.
raw
folder, if it doesn't exists,
create one.-
or special characters in it.On your activity, you need to have a object MediaPlayer
, inside the onCreate
method or the onclick
method, you have to initialize the MediaPlayer
, like MediaPlayer.create(this, R.raw.name_of_your_audio_file)
, then your audio file ir ready to be played with the call for start()
, in your case, since you want it to be placed in a button, you'll have to put it inside the onClick
method.
Example:
private Button myButton;
private MediaPlayer mp;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.myactivity);
mp = MediaPlayer.create(this, R.raw.gunshot);
myButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
mp.start();
}
});
}
}
Arrays have numerical indexes. So,
a = new Array();
a['a1']='foo';
a['a2']='bar';
and
b = new Array(2);
b['b1']='foo';
b['b2']='bar';
are not adding elements to the array, but adding .a1
and .a2
properties to the a
object (arrays are objects too). As further evidence, if you did this:
a = new Array();
a['a1']='foo';
a['a2']='bar';
console.log(a.length); // outputs zero because there are no items in the array
Your third option:
c=['c1','c2','c3'];
is assigning the variable c
an array with three elements. Those three elements can be accessed as: c[0]
, c[1]
and c[2]
. In other words, c[0] === 'c1'
and c.length === 3
.
Javascript does not use its array functionality for what other languages call associative arrays where you can use any type of key in the array. You can implement most of the functionality of an associative array by just using an object in javascript where each item is just a property like this.
a = {};
a['a1']='foo';
a['a2']='bar';
It is generally a mistake to use an array for this purpose as it just confuses people reading your code and leads to false assumptions about how the code works.
Open SQL Management Studio Express and log in to the server to which you want to attach the database. In the 'Object Explorer' window, right-click on the 'Databases' folder and select 'Attach...' The 'Attach Databases' window will open; inside that window click 'Add...' and then navigate to your .MDF file and click 'OK'. Click 'OK' once more to finish attaching the database and you are done. The database should be available for use. best regards :)