I spent quite a bit of time also looking to launch a simple Python program at 01:00. For some reason, I couldn't get cron to launch it and APScheduler seemed rather complex for something that should be simple. Schedule (https://pypi.python.org/pypi/schedule) seemed about right.
You will have to install their Python library:
pip install schedule
This is modified from their sample program:
import schedule
import time
def job(t):
print "I'm working...", t
return
schedule.every().day.at("01:00").do(job,'It is 01:00')
while True:
schedule.run_pending()
time.sleep(60) # wait one minute
You will need to put your own function in place of job and run it with nohup, e.g.:
nohup python2.7 MyScheduledProgram.py &
Don't forget to start it again if you reboot.
If you want to use the GUI... click/double-click the table and select the Data
tab. Click in the column value you want to set to (null)
. Select the value and delete it. Hit the commit button (green check-mark button). It should now be null.
More info here:
How to use the SQL Worksheet in SQL Developer to Insert, Update and Delete Data
A useful extension is to collect the results in a Dictionary
for fast lookup (e.g. in a loop):
var resultDict = _dbContext.Projects
.Where(p => p.Status == ProjectStatus.Active)
.GroupBy(f => f.Country)
.Select(g => new { country = g.Key, count = g.Count() })
.ToDictionary(k => k.country, i => i.count);
Originally found here: http://www.snippetsource.net/Snippet/140/groupby-and-count-with-ef-in-c
I found this issue in Visual Studio 2019 Version 16.4.4
I resolved most issues by discovering that the
packages.config
was missing the appropriate reference
eg:
<package id="System.Runtime" version="4.3.0" targetFramework="net461" />
A Function will not work, nor is it necessary:
Sub OpenWorkbook()
Dim r1 As Range, r2 As Range, o As Workbook
Set r1 = ThisWorkbook.Sheets("Sheet1").Range("A1")
Set o = Workbooks.Open(Filename:="C:\TestFolder\ABC.xlsx")
Set r2 = ActiveWorkbook.Sheets("Sheet1").Range("B2")
[r1] = [r2]
o.Close
End Sub
I was just playing around with a similar problem on codepen, this is what I did to create an overlay using a simple css markup. I created a div element with class .box applied to it. Inside this div I created two divs, one with .inner class applied to it and the other with .notext class applied to it. Both of these classes inside the .box div are initially set to display:none but when the .box is hovered over, these are made visible.
.box{_x000D_
height:450px;_x000D_
width:450px;_x000D_
border:1px solid black;_x000D_
margin-top:50px;_x000D_
display:inline-block;_x000D_
margin-left:50px;_x000D_
transition: width 2s, height 2s;_x000D_
position:relative;_x000D_
text-align: center;_x000D_
background:url('https://upload.wikimedia.org/wikipedia/commons/c/cd/Panda_Cub_from_Wolong,_Sichuan,_China.JPG');_x000D_
background-size:cover;_x000D_
background-position:center;_x000D_
_x000D_
}_x000D_
.box:hover{_x000D_
width:490px;_x000D_
height:490px;_x000D_
}_x000D_
.inner{_x000D_
border:1px solid red;_x000D_
position:relative;_x000D_
width:100%;_x000D_
height:100%;_x000D_
top:0px;_x000D_
left:0px;_x000D_
display:none; _x000D_
color:white;_x000D_
font-size:xx-large;_x000D_
z-index:10;_x000D_
}_x000D_
.box:hover > .inner{_x000D_
display:inline-block;_x000D_
}_x000D_
.notext{_x000D_
height:30px;_x000D_
width:30px;_x000D_
border:1px solid blue;_x000D_
position:absolute;_x000D_
top:0px;_x000D_
left:0px;_x000D_
width:100%;_x000D_
height:100%;_x000D_
display:none;_x000D_
}_x000D_
.box:hover > .notext{_x000D_
background-color:black;_x000D_
opacity:0.5;_x000D_
display:inline-block;_x000D_
}
_x000D_
<div class="box">_x000D_
<div class="inner">_x000D_
<p>Panda!</p>_x000D_
</div>_x000D_
<div class="notext"></div>_x000D_
</div>
_x000D_
Hope this helps! :) Any suggestions are welcome.
Some things to note:
You should always declare your enum inside a namespace as enums are not proper namespaces and you will be tempted to use them like one.
Always have a break at the end of each switch clause execution will continue downwards to the end otherwise.
Always include the default:
case in your switch.
Use variables of enum type to hold enum values for clarity.
see here for a discussion of the correct use of enums in C++.
This is what you want to do.
namespace choices
{
enum myChoice
{
EASY = 1 ,
MEDIUM = 2,
HARD = 3
};
}
int main(int c, char** argv)
{
choices::myChoice enumVar;
cin >> enumVar;
switch (enumVar)
{
case choices::EASY:
{
// do stuff
break;
}
case choices::MEDIUM:
{
// do stuff
break;
}
default:
{
// is likely to be an error
}
};
}
You don't need an array to do it.
var ItemNode = this.state.data.map(function(itemData) {
return (
<ComponentName title={itemData.title} key={itemData.id} number={itemData.id}/>
);
});
The best I found is add this code to the link
<!-- Link -->
<a href="#mdl" role="button" data-backdrop="static" data-keyboard="false" data-toggle="modal" id_team="" ></a>
<-- Div -->
<div id="mdl" class="modal hide fade" tabindex="-1" role="dialog" data-keyboard="false" data-backdrop="static"></div>
If you are trying to do something fast, efficient and readable, use a standard if...then...else structure like this:
var d = this.dealer;
if (d < 12) {
if (d < 5) {
alert("less than five");
}else if (d < 9) {
alert("between 5 and 8");
}else{
alert("between 9 and 11");
}
}else{
alert("none");
}
If you want to obfuscate it and make it awful (but small), try this:
var d=this.dealer;d<12?(d<5?alert("less than five"):d<9?alert("between 5 and 8"):alert("between 9 and 11")):alert("none");
BTW, the above code is a JavaScript if...then...else shorthand statement. It is a great example of how NOT to write code unless obfuscation or code minification is the goal. Be aware that code maintenance can be an issue if written this way. Very few people can easily read through it, if at all. The code size, however, is 50% smaller than the standard if...then...else without any loss of performance. This means that in larger codebases, minification like this can greatly speed code delivery across bandwidth constrained or high latency networks.
This, however, should not be considered a good answer. It is just an example of what CAN be done, not what SHOULD be done.
I have just met once, the solution is to empty the cookies. And may be changed while debugging SECRET_KEY related.
this.getWindow().getDecorView().findViewById(android.R.id.content)
or
this.findViewById(android.R.id.content)
or
this.findViewById(android.R.id.content).getRootView()
If you have XDocument it is easier to use LINQ-to-XML:
var document = XDocument.Load(fileName);
var name = document.Descendants(XName.Get("Name", @"http://demo.com/2011/demo-schema")).First().Value;
If you are sure that XPath is the only solution you need:
using System.Xml.XPath;
var document = XDocument.Load(fileName);
var namespaceManager = new XmlNamespaceManager(new NameTable());
namespaceManager.AddNamespace("empty", "http://demo.com/2011/demo-schema");
var name = document.XPathSelectElement("/empty:Report/empty:ReportInfo/empty:Name", namespaceManager).Value;
It's plain and simple.
span
does not affect the layout because it's inline(in line
(one should not confuse because things could be wrapped))div
affects the layout, the content inside appears in the new line(block element
), when the element you wanna add has no special semantic meaning and you want it to appear in new line use <div>
.create directory in /res/anim and create bottom_to_original.xml
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate
android:duration="1500"
android:fromYDelta="100%"
android:toYDelta="1%" />
</set>
JAVA:
LinearLayout ll = findViewById(R.id.ll);
Animation animation;
animation = AnimationUtils.loadAnimation(getApplicationContext(),
R.anim.sample_animation);
ll .setAnimation(animation);
You usually get this error if your tables use the InnoDB engine. In that case you would have to drop the foreign key, and then do the alter table and drop the column.
But the tricky part is that you can't drop the foreign key using the column name, but instead you would have to find the name used to index it. To find that, issue the following select:
SHOW CREATE TABLE region; This should show you a row ,at left upper corner click the +option ,the click the full text raio button then click the go .there you will get the name of the index, something like this:
CONSTRAINT region_ibfk_1 FOREIGN KEY (country_id) REFERENCES country (id) ON DELETE NO ACTION ON UPDATE NO ACTION Now simply issue an:
alter table region drop foreign key region_ibfk_1;
or
more simply just type:- alter table TableName drop foreign key TableName_ibfk_1;
remember the only thing is to add _ibfk_1 after your tablename to make like this:- TableName_ibfk_1
You need to delegate event to the document level
$(document).on('submit','form.remember',function(){
// code
});
$('form.remember').on('submit'
work same as $('form.remember').submit(
but when you use $(document).on('submit','form.remember'
then it will also work for the DOM added later.
Have you tried setting the selection properties of your tableView like this:
tableView.allowsMultipleSelection = NO; tableView.allowsMultipleSelectionDuringEditing = YES; tableView.allowsSelection = NO; tableView.allowsSelectionDuringEditing YES;
If you want more fine-grain control over when selection is allowed you can override - (NSIndexPath *)tableView:(UITableView *)tableView willSelectRowAtIndexPath:(NSIndexPath *)indexPath
in your UITableView delegate. The documentation states:
Return Value An index-path object that confirms or alters the selected row. Return an NSIndexPath object other than indexPath if you want another cell to be selected. Return nil if you don't want the row selected.
You can have this method return nil in cases where you don't want the selection to happen.
Set the scrollable div to have a max-size
and add overflow-y: scroll;
to it's properties.
Edit: trying to get the jsfiddle to work, but it's not scrolling properly. This will take some time to figure out.
See Converting unix timestamp to excel date-time forum thread.
Some answers seem just wrong,
Here is my pair class
public class Pair<X, Y>
{
private X _x;
private Y _y;
public Pair(X first, Y second)
{
_x = first;
_y = second;
}
public X first { get { return _x; } }
public Y second { get { return _y; } }
public override bool Equals(object obj)
{
if (obj == null)
return false;
if (obj == this)
return true;
Pair<X, Y> other = obj as Pair<X, Y>;
if (other == null)
return false;
return
(((first == null) && (other.first == null))
|| ((first != null) && first.Equals(other.first)))
&&
(((second == null) && (other.second == null))
|| ((second != null) && second.Equals(other.second)));
}
public override int GetHashCode()
{
int hashcode = 0;
if (first != null)
hashcode += first.GetHashCode();
if (second != null)
hashcode += second.GetHashCode();
return hashcode;
}
}
Here is some test code:
[TestClass]
public class PairTest
{
[TestMethod]
public void pairTest()
{
string s = "abc";
Pair<int, string> foo = new Pair<int, string>(10, s);
Pair<int, string> bar = new Pair<int, string>(10, s);
Pair<int, string> qux = new Pair<int, string>(20, s);
Pair<int, int> aaa = new Pair<int, int>(10, 20);
Assert.IsTrue(10 == foo.first);
Assert.AreEqual(s, foo.second);
Assert.AreEqual(foo, bar);
Assert.IsTrue(foo.GetHashCode() == bar.GetHashCode());
Assert.IsFalse(foo.Equals(qux));
Assert.IsFalse(foo.Equals(null));
Assert.IsFalse(foo.Equals(aaa));
Pair<string, string> s1 = new Pair<string, string>("a", "b");
Pair<string, string> s2 = new Pair<string, string>(null, "b");
Pair<string, string> s3 = new Pair<string, string>("a", null);
Pair<string, string> s4 = new Pair<string, string>(null, null);
Assert.IsFalse(s1.Equals(s2));
Assert.IsFalse(s1.Equals(s3));
Assert.IsFalse(s1.Equals(s4));
Assert.IsFalse(s2.Equals(s1));
Assert.IsFalse(s3.Equals(s1));
Assert.IsFalse(s2.Equals(s3));
Assert.IsFalse(s4.Equals(s1));
Assert.IsFalse(s1.Equals(s4));
}
}
Yes, it is deprecated. http://docs.jboss.org/hibernate/core/4.0/javadocs/org/hibernate/cfg/Configuration.html#buildSessionFactory() specifically tells you to use the other method you found instead (buildSessionFactory(ServiceRegistry serviceRegistry)
) - so use it.
The documentation is copied over from release to release, and likely just hasn't been updated yet (they don't rewrite the manual with every release) - so trust the Javadocs.
The specifics of this change can be viewed at:
Some additional references:
There is no DrawCircle
method; use DrawEllipse
instead. I have a static class with handy graphics extension methods. The following ones draw and fill circles. They are wrappers around DrawEllipse
and FillEllipse
:
public static class GraphicsExtensions
{
public static void DrawCircle(this Graphics g, Pen pen,
float centerX, float centerY, float radius)
{
g.DrawEllipse(pen, centerX - radius, centerY - radius,
radius + radius, radius + radius);
}
public static void FillCircle(this Graphics g, Brush brush,
float centerX, float centerY, float radius)
{
g.FillEllipse(brush, centerX - radius, centerY - radius,
radius + radius, radius + radius);
}
}
You can call them like this:
g.FillCircle(myBrush, centerX, centerY, radius);
g.DrawCircle(myPen, centerX, centerY, radius);
GitHub is the entire site. Gists are a particular service offered on that site, namely code snippets akin to pastebin. However, everything is driven by git revision control, so gists also have complete revision histories.
Use the replace()
method on string:
>>> stuff = "Big and small"
>>> stuff.replace( " and ", "/" )
'Big/small'
I asked Apple the very same question and got the answer (from a Sr. Export Compliance Specialist), that "sending information over https is forcing the data to go through a secure channel from SSL, therefore it falls under the U.S. Government requirement for a CCATS review and approval." Note that it doesn't matter that Apple has already done this for their SSL implementation, but for the government, if you USE encryption that is the same (to them) as you would've coded it yourself. I also updated our blog (http://blog.theanimail.com) since Tim linked to it with updates and details on the process. Hope that helps.
I needed the same and this solution worked the most simple and straightforward way:
http://www.farinspace.com/jquery-scrollable-table-plugin/
I just give an id
to the table I want to scroll and put one line in Javascript. That's it!
By the way, first I also thought I want to use a scrollable div, but it is not necessary at all. You can use a div and put it into it, but this solution does just what we need: scrolls the table.
First, the extensions and libraries that we're going to use:
{-# LANGUAGE RankNTypes, TypeOperators #-}
import Control.Monad (join)
Of these, RankNTypes
is the only one that's absolutely essential to the below. I once wrote an explanation of RankNTypes
that some people seem to have found useful, so I'll refer to that.
Quoting Tom Crockett's excellent answer, we have:
A monad is...
- An endofunctor, T : X -> X
- A natural transformation, µ : T × T -> T, where × means functor composition
- A natural transformation, ? : I -> T, where I is the identity endofunctor on X
...satisfying these laws:
- µ(µ(T × T) × T)) = µ(T × µ(T × T))
- µ(?(T)) = T = µ(T(?))
How do we translate this to Haskell code? Well, let's start with the notion of a natural transformation:
-- | A natural transformations between two 'Functor' instances. Law:
--
-- > fmap f . eta g == eta g . fmap f
--
-- Neat fact: the type system actually guarantees this law.
--
newtype f :-> g =
Natural { eta :: forall x. f x -> g x }
A type of the form f :-> g
is analogous to a function type, but instead of thinking of it as a function between two types (of kind *
), think of it as a morphism between two functors (each of kind * -> *
). Examples:
listToMaybe :: [] :-> Maybe
listToMaybe = Natural go
where go [] = Nothing
go (x:_) = Just x
maybeToList :: Maybe :-> []
maybeToList = Natural go
where go Nothing = []
go (Just x) = [x]
reverse' :: [] :-> []
reverse' = Natural reverse
Basically, in Haskell, natural transformations are functions from some type f x
to another type g x
such that the x
type variable is "inaccessible" to the caller. So for example, sort :: Ord a => [a] -> [a]
cannot be made into a natural transformation, because it's "picky" about which types we may instantiate for a
. One intuitive way I often use to think of this is the following:
Now, with that out of the way, let's tackle the clauses of the definition.
The first clause is "an endofunctor, T : X -> X." Well, every Functor
in Haskell is an endofunctor in what people call "the Hask category," whose objects are Haskell types (of kind *
) and whose morphisms are Haskell functions. This sounds like a complicated statement, but it's actually a very trivial one. All it means is that that a Functor f :: * -> *
gives you the means of constructing a type f a :: *
for any a :: *
and a function fmap f :: f a -> f b
out of any f :: a -> b
, and that these obey the functor laws.
Second clause: the Identity
functor in Haskell (which comes with the Platform, so you can just import it) is defined this way:
newtype Identity a = Identity { runIdentity :: a }
instance Functor Identity where
fmap f (Identity a) = Identity (f a)
So the natural transformation ? : I -> T from Tom Crockett's definition can be written this way for any Monad
instance t
:
return' :: Monad t => Identity :-> t
return' = Natural (return . runIdentity)
Third clause: The composition of two functors in Haskell can be defined this way (which also comes with the Platform):
newtype Compose f g a = Compose { getCompose :: f (g a) }
-- | The composition of two 'Functor's is also a 'Functor'.
instance (Functor f, Functor g) => Functor (Compose f g) where
fmap f (Compose fga) = Compose (fmap (fmap f) fga)
So the natural transformation µ : T × T -> T from Tom Crockett's definition can be written like this:
join' :: Monad t => Compose t t :-> t
join' = Natural (join . getCompose)
The statement that this is a monoid in the category of endofunctors then means that Compose
(partially applied to just its first two parameters) is associative, and that Identity
is its identity element. I.e., that the following isomorphisms hold:
Compose f (Compose g h) ~= Compose (Compose f g) h
Compose f Identity ~= f
Compose Identity g ~= g
These are very easy to prove because Compose
and Identity
are both defined as newtype
, and the Haskell Reports define the semantics of newtype
as an isomorphism between the type being defined and the type of the argument to the newtype
's data constructor. So for example, let's prove Compose f Identity ~= f
:
Compose f Identity a
~= f (Identity a) -- newtype Compose f g a = Compose (f (g a))
~= f a -- newtype Identity a = Identity a
Q.E.D.
I asume you have connected to your database already.
$sql = "SELECT * FROM my_table";
$result = mysql_query($sql);
$row = 1; // 1-based index
while($row_data = mysql_fetch_assoc($result)) {
$col = 0;
foreach($row_data as $key=>$value) {
$objPHPExcel->getActiveSheet()->setCellValueByColumnAndRow($col, $row, $value);
$col++;
}
$row++;
}
To get several and indepent columns, just:
> test[:,[0,2]]
you will get colums 0 and 2
You can use numpy.logical_not
to invert the boolean array returned by isin
:
In [63]: s = pd.Series(np.arange(10.0))
In [64]: x = range(4, 8)
In [65]: mask = np.logical_not(s.isin(x))
In [66]: s[mask]
Out[66]:
0 0
1 1
2 2
3 3
8 8
9 9
As given in the comment by Wes McKinney you can also use
s[~s.isin(x)]
Use the solution like a below and this works in v3.2.5.
<Route
path="/foo"
component={() => (
<Content
lang="foo"
meta={{
description: lang_foo.description
}}
/>
)}
/>
or
<Route path="/foo">
<Content
lang="foo"
meta={{
description: lang_foo.description
}}
/>
</Route>
If your data is in wide format matplot
is made for this and often forgotten about:
dat <- matrix(runif(40,1,20),ncol=4) # make data
matplot(dat, type = c("b"),pch=1,col = 1:4) #plot
legend("topleft", legend = 1:4, col=1:4, pch=1) # optional legend
There is also the added bonus for those unfamiliar with things like ggplot
that most of the plotting paramters such as pch
etc. are the same using matplot()
as plot()
.
You have a few different options:
Java does not support multiple inheritance, that's why you can't extend a class from two different classes at the same time.
Rather, use a single class to extend from, and use interfaces
to include additional functionality.
Faster :
String date = FastDateFormat.getInstance("dd-MM-yyyy").format(System.currentTimeMillis( ));
<html>
<head>
<title></title>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.js"></script>
<script type="text/javascript">
$(function() {
//here you have the control over the body of the iframe document
var iBody = $("#iView").contents().find("body");
//here you have the control over any element (#myContent)
var myContent = iBody.find("#myContent");
});
</script>
</head>
<body>
<iframe src="mifile.html" id="iView" style="width:200px;height:70px;border:dotted 1px red" frameborder="0"></iframe>
</body>
</html>
The limitation of execl is that when executing a shell command or any other script that is not in the current working directory, then we have to pass the full path of the command or the script. Example:
execl("/bin/ls", "ls", "-la", NULL);
The workaround to passing the full path of the executable is to use the function execlp, that searches for the file (1st argument of execlp) in those directories pointed by PATH:
execlp("ls", "ls", "-la", NULL);
The selected answer does not work.
declare @str varchar(50)='79D136'
select 1 where @str NOT LIKE '%[^0-9]%'
I don't have a solution but know of this potential pitfall. The same goes if you substitute the letter 'D' for 'E' which is scientific notation.
Guid guidId = Guid.Parse("xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx");
string guidValue = guidId.ToString("D"); //return with hyphens
Open a new worksheet on the related instance (Alt-F10)
and run the following query
SELECT view_name, owner
FROM sys.all_views
ORDER BY owner, view_name
Try this, it works for me if you also need to support ios7, it is based on the transparency of UItoolBar:
[self.navigationController.navigationBar setBackgroundImage:[UIImage new]
forBarMetrics:UIBarMetricsDefault];
self.navigationController.navigationBar.shadowImage = [UIImage new];
self.navigationController.navigationBar.translucent = YES;
self.navigationController.view.backgroundColor = [UIColor clearColor];
UIToolbar* blurredView = [[UIToolbar alloc] initWithFrame:self.navigationController.navigationBar.bounds];
[blurredView setBarStyle:UIBarStyleBlack];
[blurredView setBarTintColor:[UIColor redColor]];
[self.navigationController.navigationBar insertSubview:blurredView atIndex:0];
It Works
To find master page controls on Child page
Label lbl_UserName = this.Master.FindControl("lbl_UserName") as Label;
lbl_UserName.Text = txtUsr.Text;
Return a list of the words in the string, using sep as the delimiter ... If sep is not specified or is None, a different splitting algorithm is applied: runs of consecutive whitespace are regarded as a single separator, and the result will contain no empty strings at the start or end if the string has leading or trailing whitespace.
>>> line="a sentence with a few words"
>>> line.split()
['a', 'sentence', 'with', 'a', 'few', 'words']
>>>
This is a fairly comprehensive list from the Eclipse documentation. If anyone knows of another list — maybe with more details, or just the most common icons — feel free to add it.
Latest: JDT Icons
2019-06: JDT Icons
2019-03: JDT Icons
2018-12: JDT Icons
2018-09: JDT Icons
Photon: JDT Icons
Oxygen: JDT Icons
Neon: JDT Icons
Mars: JDT Icons
Luna: JDT Icons
Kepler: JDT Icons
Juno: JDT Icons
Indigo: JDT Icons
Helios: JDT Icons
There are also some CDT icons at the bottom of this help page.
If you're a Subversion user, the icons you're looking for may actually belong to Subclipse; see this excellent answer for more on those.
Player.cpp
require the definition of Ball
class. So simply add #include "Ball.h"
Player.cpp:
#include "Player.h"
#include "Ball.h"
void Player::doSomething(Ball& ball) {
ball.ballPosX += 10; // incomplete type error occurs here.
}
If you have tried all of the above, which are all valid and good answers, and your htaccess file is not working or being read change the directive in the apache2.conf
file. Under Ubuntu the path is /etc/apache2/apache2.conf
Change the <Directory>
directive pointing to your public web pages, where the htaccess file resides. Change from AllowOverride None
to AllowOverride All
<Directory /var/www/>
Options Indexes FollowSymLinks
AllowOverride All
Require all granted
</Directory>
I had the same problem and found the answer and explanation on the Ubuntu Ask! forum https://askubuntu.com/questions/421233/enabling-htaccess-file-to-rewrite-path-not-working
I found a module written by Brett Alistair Kromkamp which was not completed. I finished it and make it public on github and renamed it as treelib
(original pyTree
):
https://github.com/caesar0301/treelib
May it help you....
Some code that allows you to use CI instance inside the helper:
function yourHelperFunction(){
$ci=& get_instance();
$ci->load->database();
$sql = "select * from table";
$query = $ci->db->query($sql);
$row = $query->result();
}
You aren't going to be able to do this from the HashMap class alone.
I would take the Map<String, String> codes
, construct a reverse map of TreeMap<String, String> reversedMap
where you map the values of the codes
Map to the keys (this would require your original Map to have a one-to-one mapping from key-to-value). Since the TreeMap provides Iterators which returns entries in ascending key order, this will give you the value/key combination of the first map in the order (sorted by values) you desire.
Map<String, String> reversedMap = new TreeMap<String, String>(codes);
//then you just access the reversedMap however you like...
for (Map.Entry entry : reversedMap.entrySet()) {
System.out.println(entry.getKey() + ", " + entry.getValue());
}
There are several collections libraries (commons-collections, Google Collections, etc) which have similar bidirectional Map implementations.
Include from the most specific to the least specific, starting with the corresponding .hpp for the .cpp, if one such exists. That way, any hidden dependencies in header files that are not self-sufficient will be revealed.
This is complicated by the use of pre-compiled headers. One way around this is, without making your project compiler-specific, is to use one of the project headers as the precompiled header include file.
another tip...where to add "content-type: application/json"...to the textbox field on the Composer/Parsed tab. There are 3 lines already filled in there, so I added this Content-type as the 4th line. That made the Post work.
Just type javac
. If it is installed you get usage information, otherwise it would just ask if you would like to install Java.
The Linkify class has some pretty useful helper methods that might be relevant, including regular expressions designed to pick up phone numbers and email addresses and such:
http://developer.android.com/reference/android/text/util/Linkify.html
If you have Div as follows in one Iframe
<iframe id="ifrmReportViewer" name="ifrmReportViewer" frameborder="0" width="980"
<div id="EndLetterSequenceNoToShow" runat="server"> 11441551 </div> Or
<form id="form1" runat="server">
<div style="clear: both; width: 998px; margin: 0 auto;" id="divInnerForm">
Some Text
</div>
</form>
</iframe>
Then you can find the text of those Div using the following code
var iContentBody = $("#ifrmReportViewer").contents().find("body");
var endLetterSequenceNo = iContentBody.find("#EndLetterSequenceNoToShow").text();
var divInnerFormText = iContentBody.find("#divInnerForm").text();
I hope this will help someone.
When a class implements an interface,it is creating instance for the interface members. While a static type doesnt have an instance,there is no point in having static signatures in an interface.
If none of the above suggestions works for you, try using the style
attribute.
**Notes**
<p style="color:red;">ERROR: Setting focus didn't work for me when I tried from jupyter. However it worked well when I ran it from the terminal</p>
This gives me the following result
Here's one way to do it—there are many others:
bool b[4];
int v = 7; // number to dissect
for (int j = 0; j < 4; ++j)
b [j] = 0 != (v & (1 << j));
It is hard to understand why use of a loop is not desired, but it is easy enough to unroll the loop:
bool b[4];
int v = 7; // number to dissect
b [0] = 0 != (v & (1 << 0));
b [1] = 0 != (v & (1 << 1));
b [2] = 0 != (v & (1 << 2));
b [3] = 0 != (v & (1 << 3));
Or evaluating constant expressions in the last four statements:
b [0] = 0 != (v & 1);
b [1] = 0 != (v & 2);
b [2] = 0 != (v & 4);
b [3] = 0 != (v & 8);
The "import" keyword is for attaching python definitions that are created external to the current python program. So in your case, where you just want to read a file with some text in it, use:
text = open("words.txt", "rb").read()
It's Carriage Return
. Source: http://msdn.microsoft.com/en-us/library/6aw8xdf2(v=vs.80).aspx
The following repeats the loop until the user has pressed the Return key.
while(ch!='\r')
{
ch=getche();
}
If you use MyISAM tables, then you can recover any data you deleted, just
open file: mysql/data/[your_db]/[your_table].MYD
with any text editor
BigDecimal decPrec = (BigDecimal)yo.get("Avg");
decPrec = decPrec.setScale(5, RoundingMode.CEILING);
String value= String.valueOf(decPrec);
This way you can set specific precision of a BigDecimal
.
The value of decPrec was 1.5726903423607562595809913132345426
which is rounded off to 1.57267
.
matches()
will only return true if the full string is matched.
find()
will try to find the next occurrence within the substring that matches the regex. Note the emphasis on "the next". That means, the result of calling find()
multiple times might not be the same. In addition, by using find()
you can call start()
to return the position the substring was matched.
final Matcher subMatcher = Pattern.compile("\\d+").matcher("skrf35kesruytfkwu4ty7sdfs");
System.out.println("Found: " + subMatcher.matches());
System.out.println("Found: " + subMatcher.find() + " - position " + subMatcher.start());
System.out.println("Found: " + subMatcher.find() + " - position " + subMatcher.start());
System.out.println("Found: " + subMatcher.find() + " - position " + subMatcher.start());
System.out.println("Found: " + subMatcher.find());
System.out.println("Found: " + subMatcher.find());
System.out.println("Matched: " + subMatcher.matches());
System.out.println("-----------");
final Matcher fullMatcher = Pattern.compile("^\\w+$").matcher("skrf35kesruytfkwu4ty7sdfs");
System.out.println("Found: " + fullMatcher.find() + " - position " + fullMatcher.start());
System.out.println("Found: " + fullMatcher.find());
System.out.println("Found: " + fullMatcher.find());
System.out.println("Matched: " + fullMatcher.matches());
System.out.println("Matched: " + fullMatcher.matches());
System.out.println("Matched: " + fullMatcher.matches());
System.out.println("Matched: " + fullMatcher.matches());
Will output:
Found: false Found: true - position 4 Found: true - position 17 Found: true - position 20 Found: false Found: false Matched: false ----------- Found: true - position 0 Found: false Found: false Matched: true Matched: true Matched: true Matched: true
So, be careful when calling find()
multiple times if the Matcher
object was not reset, even when the regex is surrounded with ^
and $
to match the full string.
var seconds = 0;
setInterval(function () {
seconds++;
}, 1000);
There you go, now you have a variable counting seconds elapsed. Since I don't know the context, you'll have to decide whether you want to attach that variable to an object or make it global.
Set interval is simply a function that takes a function as it's first parameter and a number of milliseconds to repeat the function as it's second parameter.
You could also solve this by saving and comparing times.
EDIT: This answer will provide very inconsistent results due to things such as the event loop and the way browsers may choose to pause or delay processing when a page is in a background tab. I strongly recommend using the accepted answer.
The one-to-many table relationship looks as follows:
In a relational database system, a one-to-many table relationship links two tables based on a Foreign Key
column in the child which references the Primary Key
of the parent table row.
In the table diagram above, the post_id
column in the post_comment
table has a Foreign Key
relationship with the post
table id Primary Key
column:
ALTER TABLE
post_comment
ADD CONSTRAINT
fk_post_comment_post_id
FOREIGN KEY (post_id) REFERENCES post
The one-to-one table relationship looks as follows:
In a relational database system, a one-to-one table relationship links two tables based on a Primary Key
column in the child which is also a Foreign Key
referencing the Primary Key
of the parent table row.
Therefore, we can say that the child table shares the Primary Key
with the parent table.
In the table diagram above, the id
column in the post_details
table has also a Foreign Key
relationship with the post
table id
Primary Key
column:
ALTER TABLE
post_details
ADD CONSTRAINT
fk_post_details_id
FOREIGN KEY (id) REFERENCES post
The many-to-many table relationship looks as follows:
In a relational database system, a many-to-many table relationship links two parent tables via a child table which contains two Foreign Key
columns referencing the Primary Key
columns of the two parent tables.
In the table diagram above, the post_id
column in the post_tag
table has also a Foreign Key
relationship with the post
table id Primary Key
column:
ALTER TABLE
post_tag
ADD CONSTRAINT
fk_post_tag_post_id
FOREIGN KEY (post_id) REFERENCES post
And, the tag_id
column in the post_tag
table has a Foreign Key
relationship with the tag
table id Primary Key
column:
ALTER TABLE
post_tag
ADD CONSTRAINT
fk_post_tag_tag_id
FOREIGN KEY (tag_id) REFERENCES tag
I found the same problem and i tried all the solution mentioned above and in github. Some works only in local repository, when i push my PR in remote repositories with travic-CI or Pipelines give me the same error back. Finally i fixed it by using the npm command below.
npm audit fix --force
No, if you are debugging an app without other users use the Build > Build APK(s) menu in Android Studio or execute it in your device/emulator them the debug release apk will install automatically. If you are debugging an app with others use Build > Generate Signed APK... menu. If you want to publish the beta version use the Google Play Store. Your APK(s) will be in app\build\outputs\apk\debug
and app\release
folders.
Escape the apostrophe in O'Neal
by writing O''Neal
(two apostrophes).
In case anyone is still looking for Helvetica Neue Condensed Bold, you essentially have two options.
A very cheap compromise is to buy Franklin from fontspring and then use "HelveticaNeue-CondensedBold" as the preferred font in your CSS.
h2 {"HelveticaNeue-CondensedBold", "FranklinGothicFSDemiCondensed", Arial, sans-serif;}
Then if a Mac user loads your site they see Helvetica Neue, but if they're on another platform they see Franklin.
UPDATE: I discovered a much closer match to Helvetica Neue Condensed Bold is Nimbus Sans Novus D Condensed bold. In fact, it is also derived from Helvetica. You can get it at MyFonts.com for $20 (desktop) and $20 (web, 10k pageviews). Web with unlimited pageviews is $160. I have used this font throughout (i.e. NOT exploiting the Mac's built in "NimbusSansNovusDBoldCondensed" at all) because it leads to a design that is more uniform across browsers. Built in HN and Nimbus Sans are very similar in all respects but point size. Nimbus needs a few extra points to get an identical size match.
In my case I had to print a image inside a page. When I used the solution voted, I had 1 blank page and the other one showing the image. Hope it will help someone.
Here is the css I used:
@media print {
body * {
visibility: hidden;
}
#not-print * {
display: none;
}
#to-print, #to-print * {
visibility: visible;
}
#to-print {
display: block !important;
position: absolute;
left: 0;
top: 0;
width: auto;
height: 99%;
}
}
My html is:
<div id="not-print" >
<header class="row wrapper page-heading">
</header>
<div class="wrapper wrapper-content">
<%= image_tag @qrcode.image_url, size: "250x250" , alt: "#{@qrcode.name}" %>
</div>
</div>
<div id="to-print" style="display: none;">
<%= image_tag @qrcode.image_url, size: "300x300" , alt: "#{@qrcode.name}" %>
</div>
I prefer to do it in a more direct fashion. It does not have the Rows but is still has the array of rows.
tblCrm.DefaultView.RowFilter = "customertype = 'new'";
qtytotal = 0;
for (int i = 0; i < tblCrm.DefaultView.Count; i++)
{
result = double.TryParse(tblCrm.DefaultView[i]["qty"].ToString(), out num);
if (result == false) num = 0;
qtytotal = qtytotal + num;
}
labQty.Text = qtytotal.ToString();
With my code you can send email attachments using gmail you will need to:
set your gmail address at "YOUR SMTP EMAIL HERE"
set your gmail account password at "YOUR SMTP PASSWORD HERE_"
In the ___EMAIL TO RECEIVE THE MESSAGE_ part you need to set the destination email address.
Alarm notification is the subject,
Someone has entered the room, picture attached is the body
["/home/pi/webcam.jpg"] is an image attachment.
#!/usr/bin/env python
import smtplib
from email.MIMEMultipart import MIMEMultipart
from email.MIMEBase import MIMEBase
from email.MIMEText import MIMEText
from email.Utils import COMMASPACE, formatdate
from email import Encoders
import os
USERNAME = "___YOUR SMTP EMAIL HERE___"
PASSWORD = "__YOUR SMTP PASSWORD HERE___"
def sendMail(to, subject, text, files=[]):
assert type(to)==list
assert type(files)==list
msg = MIMEMultipart()
msg['From'] = USERNAME
msg['To'] = COMMASPACE.join(to)
msg['Date'] = formatdate(localtime=True)
msg['Subject'] = subject
msg.attach( MIMEText(text) )
for file in files:
part = MIMEBase('application', "octet-stream")
part.set_payload( open(file,"rb").read() )
Encoders.encode_base64(part)
part.add_header('Content-Disposition', 'attachment; filename="%s"'
% os.path.basename(file))
msg.attach(part)
server = smtplib.SMTP('smtp.gmail.com:587')
server.ehlo_or_helo_if_needed()
server.starttls()
server.ehlo_or_helo_if_needed()
server.login(USERNAME,PASSWORD)
server.sendmail(USERNAME, to, msg.as_string())
server.quit()
sendMail( ["___EMAIL TO RECEIVE THE MESSAGE__"],
"Alarm notification",
"Someone has entered the room, picture attached",
["/home/pi/webcam.jpg"] )
I have fixed this issue by logging in using Xorg. By default, I have used Wayland. It looks like Wayland eliminates most of the design flaws of the Xorg it has its own issues.
Try using head or tail. If you want the 5 most-recently modified files:
ls -1t | head -5
The -1 (that's a one) says one file per line and the head says take the first 5 entries.
If you want the last 5 try
ls -1t | tail -5
If you have two buttons and have the same id call to your button click events like this:
Button btn1;
Button btn2;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btn1= (Button)findViewById(R.id.button1);
btn1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent=new Intent(MainActivity.this,target.class);
startActivity(intent);
}
});
btn2=(Button) findViewById(R.id.button1);//Have same id call previous button---> button1
btn2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
}
});
When you clicked button1
, button2
will work and you cannot open your second activity.
Not sure why it's doing that. Try -s
with the -o
option to set the output file instead of >
.
That is a default behaviour of each browser; your browser seems to be Safari, in Google Chrome it is orange in color!
Use this to remove this effect:
button {
outline: none; // this one
}
As per HTML5, you can use
input type="datetime-local"
instead of
input type="date"
.
It will allow the [(ngModel)]
directive to read and write value from input control.
Note: If the date string contains 'Z' then to implement above solution, you need to trim the 'Z' character from date.
For more details, please go through this link on mozilla docs.
The correct answer is as @JaKu pointed out. Tomcat is confining the access to localhost to make it secure. This is as it should be. Port forwarding to tomcat is the correct thing to do, preferably under something secure like SSH.
You can convert ndarray
to Series
or DataFrame
with pandas
first, then you can use shift
method as you want.
Example:
In [1]: from pandas import Series
In [2]: data = np.arange(10)
In [3]: data
Out[3]: array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9])
In [4]: data = Series(data)
In [5]: data
Out[5]:
0 0
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
dtype: int64
In [6]: data = data.shift(3)
In [7]: data
Out[7]:
0 NaN
1 NaN
2 NaN
3 0.0
4 1.0
5 2.0
6 3.0
7 4.0
8 5.0
9 6.0
dtype: float64
In [8]: data = data.values
In [9]: data
Out[9]: array([ nan, nan, nan, 0., 1., 2., 3., 4., 5., 6.])
Use this code for Impersonation its tested in MVC.NET maybe for dot net core it required some change, If you want to dot net core let me know I will share.
public static class ImpersonationAuthenticationNew
{
[DllImport("advapi32.dll", SetLastError = true)]
private static extern bool LogonUser(string usernamee, string domain, string password, LogonType dwLogonType, LogonProvider dwLogonProvider, ref IntPtr phToken);
[DllImport("kernel32.dll")]
private static extern bool CloseHandle(IntPtr hObject);
public static bool Login(string domain,string username, string password)
{
IntPtr token = IntPtr.Zero;
var IsSuccess = LogonUser(username, domain, password, LogonType.LOGON32_LOGON_NEW_CREDENTIALS, LogonProvider.LOGON32_PROVIDER_WINNT50, ref token);
if (IsSuccess)
{
using (WindowsImpersonationContext person = new WindowsIdentity(token).Impersonate())
{
var xIdentity = WindowsIdentity.GetCurrent();
#region Start ImpersonationContext Scope
try
{
// TYPE YOUR CODE HERE
}
catch (Exception ex) { throw (ex); }
finally {
person.Undo();
CloseHandle(token);
return true;
}
#endregion
}
}
return false;
}
}
#region Enums
public enum LogonType
{
/// <summary>
/// This logon type is intended for users who will be interactively using the computer, such as a user being logged on
/// by a terminal server, remote shell, or similar process.
/// This logon type has the additional expense of caching logon information for disconnected operations;
/// therefore, it is inappropriate for some client/server applications,
/// such as a mail server.
/// </summary>
LOGON32_LOGON_INTERACTIVE = 2,
/// <summary>
/// This logon type is intended for high performance servers to authenticate plaintext passwords.
/// The LogonUser function does not cache credentials for this logon type.
/// </summary>
LOGON32_LOGON_NETWORK = 3,
/// <summary>
/// This logon type is intended for batch servers, where processes may be executing on behalf of a user without
/// their direct intervention. This type is also for higher performance servers that process many plaintext
/// authentication attempts at a time, such as mail or Web servers.
/// The LogonUser function does not cache credentials for this logon type.
/// </summary>
LOGON32_LOGON_BATCH = 4,
/// <summary>
/// Indicates a service-type logon. The account provided must have the service privilege enabled.
/// </summary>
LOGON32_LOGON_SERVICE = 5,
/// <summary>
/// This logon type is for GINA DLLs that log on users who will be interactively using the computer.
/// This logon type can generate a unique audit record that shows when the workstation was unlocked.
/// </summary>
LOGON32_LOGON_UNLOCK = 7,
/// <summary>
/// This logon type preserves the name and password in the authentication package, which allows the server to make
/// connections to other network servers while impersonating the client. A server can accept plaintext credentials
/// from a client, call LogonUser, verify that the user can access the system across the network, and still
/// communicate with other servers.
/// NOTE: Windows NT: This value is not supported.
/// </summary>
LOGON32_LOGON_NETWORK_CLEARTEXT = 8,
/// <summary>
/// This logon type allows the caller to clone its current token and specify new credentials for outbound connections.
/// The new logon session has the same local identifier but uses different credentials for other network connections.
/// NOTE: This logon type is supported only by the LOGON32_PROVIDER_WINNT50 logon provider.
/// NOTE: Windows NT: This value is not supported.
/// </summary>
LOGON32_LOGON_NEW_CREDENTIALS = 9,
}
public enum LogonProvider
{
/// <summary>
/// Use the standard logon provider for the system.
/// The default security provider is negotiate, unless you pass NULL for the domain name and the user name
/// is not in UPN format. In this case, the default provider is NTLM.
/// NOTE: Windows 2000/NT: The default security provider is NTLM.
/// </summary>
LOGON32_PROVIDER_DEFAULT = 0,
LOGON32_PROVIDER_WINNT35 = 1,
LOGON32_PROVIDER_WINNT40 = 2,
LOGON32_PROVIDER_WINNT50 = 3
}
#endregion
There is an attribute called android:weightSum.
You can set android:weightSum="2" in the parent linear_layout and android:weight="1" in the inner linear_layout.
Remember to set the inner linear_layout to fill_parent so weight attribute can work as expected.
Btw, I don't think its necesary to add a second view, altough I haven't tried. :)
<LinearLayout
android:layout_height="fill_parent"
android:layout_width="fill_parent"
android:weightSum="2">
<LinearLayout
android:layout_height="fill_parent"
android:layout_width="fill_parent"
android:layout_weight="1">
</LinearLayout>
</LinearLayout>
Solution 1:
Go to your android folder > Gradle.properties > add your jdk path.
Clean and rebuild then it is done. // For Example Purpose Only
org.gradle.java.home=/Library/Java/JavaVirtualMachines/jdk1.8.0_251.jdk/Contents/Home
Solution 2 At last, here I found the solution.
Add jdk path
to gradle.properties file and did a rebuild.
This will also solve your error.
Here is all Solution could not find tools.jar
You can have a look to _.some
instead of _.each
.
_.some
stops traversing the list once a predicate is true.
Result(s) can be stored in an external variable.
_.some([1, 2, 3], function(v) {
if (v == 2) return true;
})
You are using datetimepicker
when it should be datepicker
. As per the docs. Try this and it should work.
<script type="text/javascript">
$(function () {
$('#datetimepicker9').datepicker({
viewMode: 'years'
});
});
</script>
You can use SHOW
:
SHOW max_connections;
This returns the currently effective setting. Be aware that it can differ from the setting in postgresql.conf
as there are a multiple ways to set run-time parameters in PostgreSQL. To reset the "original" setting from postgresql.conf
in your current session:
RESET max_connections;
However, not applicable to this particular setting. The manual:
This parameter can only be set at server start.
To see all settings:
SHOW ALL;
There is also pg_settings
:
The view
pg_settings
provides access to run-time parameters of the server. It is essentially an alternative interface to theSHOW
andSET
commands. It also provides access to some facts about each parameter that are not directly available fromSHOW
, such as minimum and maximum values.
For your original request:
SELECT *
FROM pg_settings
WHERE name = 'max_connections';
Finally, there is current_setting()
, which can be nested in DML statements:
SELECT current_setting('max_connections');
Related:
The "compile project(':volley')" line was giving me this error:
Error:Execution failed for task ':volley:processDebugResources'. > com.android.ide.common.process.ProcessException: Failed to execute aapt
It was caused because the compileSdk and buildTools versions of module volley were currently on"22" and "22.0.1" and I my project was working with newer ones ("24" and "24.0.1").
SOLUTION:
Open your build.gradle (Module:volley) file and change the version of "compileSdk" and "buildTools", for example I changed this:
android {
compileSdkVersion 22
buildToolsVersion = '22.0.1'
}
for this:
android {
compileSdkVersion 24
buildToolsVersion = '24.0.1'
}
You should no longer have this error, I hope it helps:)
You should create a pseudo-random number generator only once:
Dim Generator As System.Random = New System.Random()
Then, if an integer suffices for your needs, you can use:
Public Function GetRandom(myGenerator As System.Random, ByVal Min As Integer, ByVal Max As Integer) As Integer
'min is inclusive, max is exclusive (dah!)
Return myGenerator.Next(Min, Max + 1)
End Function
as many times as you like. Using the wrapper function is justified only because the maximum value is exclusive - I know that the random numbers work this way but the definition of .Next is confusing.
Creating a generator every time you need a number is in my opinion wrong; the pseudo-random numbers do not work this way.
First, you get the problem with initialization which has been discussed in the other replies. If you initialize once, you do not have this problem.
Second, I am not at all certain that you get a valid sequence of random numbers; rather, you get a collection of the first number of multiple different sequences which are seeded automatically based on computer time. I am not certain that these numbers will pass the tests that confirm the randomness of the sequence.
Actually, you can do what you want. If you want to provide multiple interfaces or a class plus interfaces, you have to have your wildcard look something like this:
<T extends ClassA & InterfaceB>
See the Generics Tutorial at sun.com, specifically the Bounded Type Parameters section, at the bottom of the page. You can actually list more than one interface if you wish, using & InterfaceName
for each one that you need.
This can get arbitrarily complicated. To demonstrate, see the JavaDoc declaration of Collections#max
, which (wrapped onto two lines) is:
public static <T extends Object & Comparable<? super T>> T
max(Collection<? extends T> coll)
why so complicated? As said in the Java Generics FAQ: To preserve binary compatibility.
It looks like this doesn't work for variable declaration, but it does work when putting a generic boundary on a class. Thus, to do what you want, you may have to jump through a few hoops. But you can do it. You can do something like this, putting a generic boundary on your class and then:
class classB { }
interface interfaceC { }
public class MyClass<T extends classB & interfaceC> {
Class<T> variable;
}
to get variable
that has the restriction that you want. For more information and examples, check out page 3 of Generics in Java 5.0. Note, in <T extends B & C>
, the class name must come first, and interfaces follow. And of course you can only list a single class.
After looking at the SVG Recommendation I've come to the understanding that the baseline properties are meant to position text relative to other text, especially when mixing different fonts and or languages. If you want to postion text so that it's top is at y
then you need use dy = "y + the height of your text"
.
_Bool
is a keyword in C99: it specifies a type, just like int
or double
.
6.5.2
2 An object declared as type _Bool is large enough to store the values 0 and 1.
Warning!
This is a list of random books of diverse quality. In the view of some people (with some justification), it is no longer a list of recommended books. Some of the listed books contain blatantly incorrect statements or teach wrong/harmful practices. People who are aware of such books can edit this answer to help improve it. See The C book list has gone haywire. What to do with it?, and also Deleted question audit 2018.
The C Programming Language (2nd Edition) - Brian W. Kernighan and Dennis M. Ritchie (1988). Still a good, short but complete introduction to C (C90, not C99 or later versions), written by the inventor of C. However, the language has changed and good C style has developed in the last 25 years, and there are parts of the book that show its age.
C: A Reference Manual (5th Edition) - Samuel P. Harbison and Guy R. Steele (2002). An excellent reference book on C, up to and including C99. It is not a tutorial, and probably unfit for beginners. It's great if you need to write a compiler for C, as the authors had to do when they started.
C Pocket Reference (O'Reilly) - Peter Prinz and Ulla Kirch-Prinz (2002).
The comp.lang.c FAQ - Steve Summit. Web site with answers to many questions about C.
Various versions of the C language standards can be found here. There is an online version of the draft C11 standard.
The new C standard - an annotated reference (Free PDF) - Derek M. Jones (2009). The "new standard" referred to is the old C99 standard rather than C11.
C Programming: A Modern Approach (2nd Edition) - K. N. King (2008). A good book for learning C.
Programming in C (4th Edition) - Stephen Kochan (2014). A good general introduction and tutorial.
C Primer Plus (5th Edition) - Stephen Prata (2004)
A Book on C - Al Kelley/Ira Pohl (1998).
The C Book (Free Online) - Mike Banahan, Declan Brady, and Mark Doran (1991).
C: How to Program (8th Edition) - Paul Deitel and Harvey M. Deitel (2015). Lots of good tips and best practices for beginners. The index is very good and serves as a decent reference (just not fully comprehensive, and very shallow).
Head First C - David Griffiths and Dawn Griffiths (2012).
Beginning C (5th Edition) - Ivor Horton (2013). Very good explanation of pointers, using lots of small but complete programs.
Sams Teach Yourself C in 21 Days - Bradley L. Jones and Peter Aitken (2002). Very good introductory stuff.
C In Easy Steps (5th Edition) - Mike McGrath (2018). It is a good book for learning and referencing C.
Effective C - Robert C Seacord (2020). A good introduction to modern C, including chapters on dynamic memory allocation, on program structure, and on debugging, testing and analysis. It has some pointers toward probable C2x features.
Modern C — Jens Gustedt (2017 1st Edn; 2020 2nd Edn). Covers C in 5 levels (encounter, acquaintance, cognition, experience, ambition) from beginning C to advanced C. It covers C11 and C17, including threads and atomic access, which few other books do. Not all compilers recognize these features in all environments.
C Interfaces and Implementations - David R. Hanson (1997). Provides information on how to define a boundary between an interface and implementation in C in a generic and reusable fashion. It also demonstrates this principle by applying it to the implementation of common mechanisms and data structures in C, such as lists, sets, exceptions, string manipulation, memory allocators, and more. Basically, Hanson took all the code he'd written as part of building Icon and lcc and pulled out the best bits in a form that other people could reuse for their own projects. It's a model of good C programming using modern design techniques (including Liskov's data abstraction), showing how to organize a big C project as a bunch of useful libraries.
The C Puzzle Book - Alan R. Feuer (1998)
The Standard C Library - P.J. Plauger (1992). It contains the complete source code to an implementation of the C89 standard library, along with extensive discussions about the design and why the code is designed as shown.
21st Century C: C Tips from the New School - Ben Klemens (2012). In addition to the C language, the book explains gdb, valgrind, autotools, and git. The comments on style are found in the last part (Chapter 6 and beyond).
Algorithms in C - Robert Sedgewick (1997). Gives you a real grasp of implementing algorithms in C. Very lucid and clear; will probably make you want to throw away all of your other algorithms books and keep this one.
Problem Solving and Program Design in C (6th Edition) - Jeri R. Hanly and Elliot B. Koffman (2009).
Data Structures - An Advanced Approach Using C - Jeffrey Esakov and Tom Weiss (1989).
C Unleashed - Richard Heathfield, Lawrence Kirby, et al. (2000). Not ideal, but it is worth intermediate programmers practicing problems written in this book. This is a good cookbook-like approach suggested by comp.lang.c contributors.
Expert C Programming: Deep C Secrets - Peter van der Linden (1994). Lots of interesting information and war stories from the Sun compiler team, but a little dated in places.
Advanced C Programming by Example - John W. Perry (1998).
Advanced Programming in the UNIX Environment - Richard W. Stevens and Stephen A. Rago (2013). Comprehensive description of how to use the Unix APIs from C code, but not so much about the mechanics of C coding.
Essential C (Free PDF) - Nick Parlante (2003). Note that this describes the C90 language at several points (e.g., in discussing //
comments and placement of variable declarations at arbitrary points in the code), so it should be treated with some caution.
C Programming FAQs: Frequently Asked Questions - Steve Summit (1995). This is the book of the web site listed earlier. It doesn't cover C99 or the later standards.
C in a Nutshell - Peter Prinz and Tony Crawford (2005). Excellent book if you need a reference for C99.
Functional C - Pieter Hartel and Henk Muller (1997). Teaches modern practices that are invaluable for low-level programming, with concurrency and modularity in mind.
The Practice of Programming - Brian W. Kernighan and Rob Pike (1999). A very good book to accompany K&R. It uses C++ and Java too.
C Traps and Pitfalls by A. Koenig (1989). Very good, but the C style pre-dates standard C, which makes it less recommendable these days.
Some have argued for the removal of 'Traps and Pitfalls' from this list because it has trapped some people into making mistakes; others continue to argue for its inclusion. Perhaps it should be regarded as an 'expert' book because it requires a moderately extensive knowledge of C to understand what's changed since it was published.
MISRA-C - industry standard published and maintained by the Motor Industry Software Reliability Association. Covers C89 and C99.
Although this isn't a book as such, many programmers recommend reading and implementing as much of it as possible. MISRA-C was originally intended as guidelines for safety-critical applications in particular, but it applies to any area of application where stable, bug-free C code is desired (who doesn't want fewer bugs?). MISRA-C is becoming the de facto standard in the whole embedded industry and is getting increasingly popular even in other programming branches. There are (at least) three publications of the standard (1998, 2004, and the current version from 2012). There is also a MISRA Compliance Guidelines document from 2016, and MISRA C:2012 Amendment 1 — Additional Security Guidelines for MISRA C:2012 (published in April 2016).
Note that some of the strictures in the MISRA rules are not appropriate to every context. For example, directive 4.12 states "Dynamic memory allocation shall not be used". This is appropriate in the embedded systems for which the MISRA rules are designed; it is not appropriate everywhere. (Compilers, for instance, generally use dynamic memory allocation for things like symbol tables, and to do without dynamic memory allocation would be difficult, if not preposterous.)
Archived lists of ACCU-reviewed books on Beginner's C (116 titles) from 2007 and Advanced C (76 titles) from 2008. Most of these don't look to be on the main site anymore, and you can't browse that by subject anyway.
There is a list of books and tutorials to be cautious about at the ISO 9899 Wiki, which is not itself formally associated with ISO or the C standard, but contains information about the C standard (though it hails the release of ISO 9899:2011 and does not mention the release of ISO 9899:2018).
Be wary of books written by Herbert Schildt. In particular, you should stay away from C: The Complete Reference (4th Edition, 2000), known in some circles as C: The Complete Nonsense.
Also do not use the book Let Us C (16th Edition, 2017) by Yashwant Kanetkar. Many people view it as an outdated book that teaches Turbo C and has lots of obsolete, misleading and incorrect material. For example, page 137 discusses the expected output from printf("%d %d %d\n", a, ++a, a++)
and does not categorize it as undefined behaviour as it should. It also consistently promotes unportable and buggy coding practices, such as using gets
, %[\n]s
in scanf
, storing return value of getchar
in a variable of type char
or using fflush
on stdin
.
Learn C The Hard Way (2015) by Zed Shaw. A book with mixed reviews. A critique of this book by Tim Hentenaar:
To summarize my views, which are laid out below, the author presents the material in a greatly oversimplified and misleading way, the whole corpus is a bundled mess, and some of the opinions and analyses he offers are just plain wrong. I've tried to view this book through the eyes of a novice, but unfortunately I am biased by years of experience writing code in C. It's obvious to me that either the author has a flawed understanding of C, or he's deliberately oversimplifying to the point where he's actually misleading the reader (intentionally or otherwise).
"Learn C The Hard Way" is not a book that I could recommend to someone who is both learning to program and learning C. If you're already a competent programmer in some other related language, then it represents an interesting and unusual exposition on C, though I have reservations about parts of the book. Jonathan Leffler
Other contributors, not necessarily credited in the revision history, include:
Alex Lockwood,
Ben Jackson,
Bubbles,
claws,
coledot,
Dana Robinson,
Daniel Holden,
desbest,
Dervin Thunk,
dwc,
Erci Hou,
Garen,
haziz,
Johan Bezem,
Jonathan Leffler,
Joshua Partogi,
Lucas,
Lundin,
Matt K.,
mossplix,
Matthieu M.,
midor,
Nietzche-jou,
Norman Ramsey,
r3st0r3,
ridthyself,
Robert S. Barnes,
Steve Summit,
Tim Ring,
Tony Bai,
VMAtm
Try
sed 'NUMq;d' /etc/*release | awk {'print $1}'
where NUM is line number
ex. sed '1q;d' /etc/*release | awk {'print $1}'
You said :
Maybe my data.frame is not in a good format?
Yes this is true. Your data is in the wide format You need to put it in the long format. Generally speaking, long format is better for variables comparison.
Using reshape2
for example , you do this using melt
:
dat.m <- melt(dat,id.vars = "Rank") ## just melt(dat) should work
Then you get your barplot:
ggplot(dat.m, aes(x = Rank, y = value,fill=variable)) +
geom_bar(stat='identity')
But using lattice
and barchart
smart formula notation , you don't need to reshape your data , just do this:
barchart(F1+F2+F3~Rank,data=dat)
Late answer, but I think it adds something new to this topic.
None of the previous answers has answered the original question. Some have attempted to justify the lack of a constant, while others have showed ways in which we can deal with the lack of the constant. But no one has provided a compelling justification for the benefit of the constant, so its lack is still not properly explained.
A constant would be useful because it would prevent certain code errors from going unnoticed.
Say that you have a large code base with hundreds of references to "". Someone modifies one of these while scrolling through the code and changes it to " ". Such a change would have a high chance of going unnoticed into production, at which point it might cause some issue whose source will be tricky to detect.
OTOH, a library constant named EMPTY, if subject to the same error, would generate a compiler error for something like EM PTY.
Defining your own constant is still better. Someone could still alter its initialization by mistake, but because of its wide use, the impact of such an error would be much harder to go unnoticed than an error in a single use case.
This is one of the general benefits that you get from using constants instead of literal values. People usually recognize that using a constant for a value used in dozens of places allows you to easily update that value in just one place. What is less often acknowledged is that this also prevents that value from being accidentally modified, because such a change would show everywhere. So, yes, "" is shorter than EMPTY, but EMPTY is safer to use than "".
So, coming back to the original question, we can only speculate that the language designers were probably not aware of this benefit of providing constants for literal values that are frequently used. Hopefully, we'll one day see string constants added in Java.
To find the version of the java in the classfiles I used:
javap -verbose <classname>
which announces the version at the start as
minor version: 0
major version: 49
which corresponds to Java 1.5
Based on bisio's answer and the Bootstrap 3 code, I was able to come up with a more accurate answer for anyone just looking to copy and paste the complete media query set into their stylesheet:
/* Large desktops and laptops */
@media (min-width: 1200px) {
}
/* Landscape tablets and medium desktops */
@media (min-width: 992px) and (max-width: 1199px) {
}
/* Portrait tablets and small desktops */
@media (min-width: 768px) and (max-width: 991px) {
}
/* Landscape phones and portrait tablets */
@media (max-width: 767px) {
}
/* Portrait phones and smaller */
@media (max-width: 480px) {
}
In my case, I simply wanted an array of stacks, something like this:
Stack<SomeType>[] stacks = new Stack<SomeType>[2];
Since this was not possible, I used the following as a workaround:
Ugly, but Java is happy.
Note: as mentioned by BrainSlugs83 in the comment to the question, it is totally possible to have arrays of generics in .NET
You haven't specified what the query should return if more than one document is added at the same time, so this query assumes you want all of them returned:
SELECT t.ID,
t.USER_ID,
t.DATE_ADDED,
t.DATE_VIEWED,
t.DOCUMENT_ID,
t.URL,
t.DOCUMENT_TITLE,
t.DOCUMENT_DATE
FROM (
SELECT test_table.*,
RANK()
OVER (ORDER BY DOCUMENT_DATE DESC) AS the_rank
FROM test_table
WHERE user_id = value
)
WHERE the_rank = 1;
This query will only make one pass through the data.
I give you my solution, I am working in "XIB mode", here the code of a subclass of a UITableViewController :
-(id)initWithCoder:(NSCoder *)aDecoder
{
self = [super initWithStyle:UITableViewStyleGrouped];
return self;
}
It probably aimed to select all the informations in your table. If you use this kind of query (for example in PHP) :
mysql_query("SELECT * FROM newsletter WHERE email = '$email'");
The email ' OR 1=1/* will give this kind of query :
mysql_query("SELECT * FROM newsletter WHERE email = '' OR 1=1/*");
So it selects all the rows (because 1=1 is always true and the rest of the query is 'commented'). But it was not successful
I cloned the following: https://github.com/google/play-licensing
Then I imported that into my project.
git config --local receive.denyCurrentBranch updateInstead
Added in Git 2.3, this could be a good possibility: https://github.com/git/git/blob/v2.3.0/Documentation/config.txt#L2155
You set it on the server repository, and it also updates the working tree if it is clean.
There have been further improvements in 2.4 with the push-to-checkout
hook and handling of unborn branches.
Sample usage:
git init server
cd server
touch a
git add .
git commit -m 0
git config --local receive.denyCurrentBranch updateInstead
cd ..
git clone server local
cd local
touch b
git add .
git commit -m 1
git push origin master:master
cd ../server
ls
Output:
a
b
This does have the following shortcomings mentioned on the GitHub announcement:
But all of those points are out of the scope of Git and must be taken care of by external code. So in that sense, this, together with Git hooks, are the ultimate solution.
lateinit vs lazy
lateinit
i) Use it with mutable variable[var]
lateinit var name: String //Allowed
lateinit val name: String //Not Allowed
ii) Allowed with only non-nullable data types
lateinit var name: String //Allowed
lateinit var name: String? //Not Allowed
iii) It is a promise to compiler that the value will be initialized in future.
NOTE: If you try to access lateinit variable without initializing it then it throws UnInitializedPropertyAccessException.
lazy
i) Lazy initialization was designed to prevent unnecessary initialization of objects.
ii) Your variable will not be initialized unless you use it.
iii) It is initialized only once. Next time when you use it, you get the value from cache memory.
iv) It is thread safe(It is initialized in the thread where it is used for the first time. Other threads use the same value stored in the cache).
v) The variable can only be val.
vi) The variable can only be non-nullable.
Laravel does not need mcrypt
extension anymore. mcrypt
is obsolete, the last update to libmcrypt was in 2007. Laravel 4.2 is obsolete too and has no more support. The best (=secure) solution is to update to Laravel >5.1 (there is no LTS before Laravel 5.2).
Mcrypt was removed from Laravel in June 2015: https://github.com/laravel/framework/pull/9041
tl;dr
"Foo" and "bar" as metasyntactic variables were popularised by MIT and DEC, the first references are in work on LISP and PDP-1 and Project MAC from 1964 onwards.
Many of these people were in MIT's Tech Model Railroad Club, where we find the first documented use of "foo" in tech circles in 1959 (and a variant in 1958).
Both "foo" and "bar" (and even "baz") were well known in popular culture, especially from Smokey Stover and Pogo comics, which will have been read by many TMRC members.
Also, it seems likely the military FUBAR contributed to their popularity.
The use of lone "foo" as a nonsense word is pretty well documented in popular culture in the early 20th century, as is the military FUBAR. (Some background reading: FOLDOC FOLDOC Jargon File Jargon File Wikipedia RFC3092)
OK, so let's find some references.
STOP PRESS! After posting this answer, I discovered this perfect article about "foo" in the Friday 14th January 1938 edition of The Tech ("MIT's oldest and largest newspaper & the first newspaper published on the web"), Volume LVII. No. 57, Price Three Cents:
On Foo-ism
The Lounger thinks that this business of Foo-ism has been carried too far by its misguided proponents, and does hereby and forthwith take his stand against its abuse. It may be that there's no foo like an old foo, and we're it, but anyway, a foo and his money are some party. (Voice from the bleachers- "Don't be foo-lish!")
As an expletive, of course, "foo!" has a definite and probably irreplaceable position in our language, although we fear that the excessive use to which it is currently subjected may well result in its falling into an early (and, alas, a dark) oblivion. We say alas because proper use of the word may result in such happy incidents as the following.
It was an 8.50 Thermodynamics lecture by Professor Slater in Room 6-120. The professor, having covered the front side of the blackboard, set the handle that operates the lift mechanism, turning meanwhile to the class to continue his discussion. The front board slowly, majestically, lifted itself, revealing the board behind it, and on that board, writ large, the symbols that spelled "FOO"!
The Tech newspaper, a year earlier, the Letter to the Editor, September 1937:
By the time the train has reached the station the neophytes are so filled with the stories of the glory of Phi Omicron Omicron, usually referred to as Foo, that they are easy prey.
...
It is not that I mind having lost my first four sons to the Grand and Universal Brotherhood of Phi Omicron Omicron, but I do wish that my fifth son, my baby, should at least be warned in advance.
Hopefully yours,
Indignant Mother of Five.
And The Tech in December 1938:
General trend of thought might be best interpreted from the remarks made at the end of the ballots. One vote said, '"I don't think what I do is any of Pulver's business," while another merely added a curt "Foo."
The first documented "foo" in tech circles is probably 1959's Dictionary of the TMRC Language:
FOO: the sacred syllable (FOO MANI PADME HUM); to be spoken only when under inspiration to commune with the Deity. Our first obligation is to keep the Foo Counters turning.
These are explained at FOLDOC. The dictionary's compiler Pete Samson said in 2005:
Use of this word at TMRC antedates my coming there. A foo counter could simply have randomly flashing lights, or could be a real counter with an obscure input.
And from 1996's Jargon File 4.0.0:
Earlier versions of this lexicon derived 'baz' as a Stanford corruption of bar. However, Pete Samson (compiler of the TMRC lexicon) reports it was already current when he joined TMRC in 1958. He says "It came from "Pogo". Albert the Alligator, when vexed or outraged, would shout 'Bazz Fazz!' or 'Rowrbazzle!' The club layout was said to model the (mythical) New England counties of Rowrfolk and Bassex (Rowrbazzle mingled with (Norfolk/Suffolk/Middlesex/Essex)."
A year before the TMRC dictionary, 1958's MIT Voo Doo Gazette ("Humor suplement of the MIT Deans' office") (PDF) mentions Foocom, in "The Laws of Murphy and Finagle" by John Banzhaf (an electrical engineering student):
Further research under a joint Foocom and Anarcom grant expanded the law to be all embracing and universally applicable: If anything can go wrong, it will!
Also 1964's MIT Voo Doo (PDF) references the TMRC usage:
Yes! I want to be an instant success and snow customers. Send me a degree in: ...
Foo Counters
Foo Jung
Let's find "foo", "bar" and "foobar" published in code examples.
So, Jargon File 4.4.7 says of "foobar":
Probably originally propagated through DECsystem manuals by Digital Equipment Corporation (DEC) in 1960s and early 1970s; confirmed sightings there go back to 1972.
The first published reference I can find is from February 1964, but written in June 1963, The Programming Language LISP: its Operation and Applications by Information International, Inc., with many authors, but including Timothy P. Hart and Michael Levin:
Thus, since "FOO" is a name for itself, "COMITRIN" will treat both "FOO" and "(FOO)" in exactly the same way.
Also includes other metasyntactic variables such as: FOO CROCK GLITCH / POOT TOOR / ON YOU / SNAP CRACKLE POP / X Y Z
I expect this is much the same as this next reference of "foo" from MIT's Project MAC in January 1964's AIM-064, or LISP Exercises by Timothy P. Hart and Michael Levin:
car[((FOO . CROCK) . GLITCH)]
It shares many other metasyntactic variables like: CHI / BOSTON NEW YORK / SPINACH BUTTER STEAK / FOO CROCK GLITCH / POOT TOOP / TOOT TOOT / ISTHISATRIVIALEXCERCISE / PLOOP FLOT TOP / SNAP CRACKLE POP / ONE TWO THREE / PLANE SUB THRESHER
For both "foo" and "bar" together, the earliest reference I could find is from MIT's Project MAC in June 1966's AIM-098, or PDP-6 LISP by none other than Peter Samson:
EXPLODE, like PRIN1, inserts slashes, so (EXPLODE (QUOTE FOO/ BAR)) PRIN1's as (F O O // / B A R) or PRINC's as (F O O / B A R).
Some more recallations.
@Walter Mitty recalled on this site in 2008:
I second the jargon file regarding Foo Bar. I can trace it back at least to 1963, and PDP-1 serial number 2, which was on the second floor of Building 26 at MIT. Foo and Foo Bar were used there, and after 1964 at the PDP-6 room at project MAC.
John V. Everett recalls in 1996:
When I joined DEC in 1966, foobar was already being commonly used as a throw-away file name. I believe fubar became foobar because the PDP-6 supported six character names, although I always assumed the term migrated to DEC from MIT. There were many MIT types at DEC in those days, some of whom had worked with the 7090/7094 CTSS. Since the 709x was also a 36 bit machine, foobar may have been used as a common file name there.
Foo and bar were also commonly used as file extensions. Since the text editors of the day operated on an input file and produced an output file, it was common to edit from a .foo file to a .bar file, and back again.
It was also common to use foo to fill a buffer when editing with TECO. The text string to exactly fill one disk block was IFOO$HXA127GA$$. Almost all of the PDP-6/10 programmers I worked with used this same command string.
Daniel P. B. Smith in 1998:
Dick Gruen had a device in his dorm room, the usual assemblage of B-battery, resistors, capacitors, and NE-2 neon tubes, which he called a "foo counter." This would have been circa 1964 or so.
Robert Schuldenfrei in 1996:
The use of FOO and BAR as example variable names goes back at least to 1964 and the IBM 7070. This too may be older, but that is where I first saw it. This was in Assembler. What would be the FORTRAN integer equivalent? IFOO and IBAR?
Paul M. Wexelblat in 1992:
The earliest PDP-1 Assembler used two characters for symbols (18 bit machine) programmers always left a few words as patch space to fix problems. (Jump to patch space, do new code, jump back) That space conventionally was named FU: which stood for Fxxx Up, the place where you fixed Fxxx Ups. When spoken, it was known as FU space. Later Assemblers ( e.g. MIDAS allowed three char tags so FU became FOO, and as ALL PDP-1 programmers will tell you that was FOO space.
Bruce B. Reynolds in 1996:
On the IBM side of FOO(FU)BAR is the use of the BAR side as Base Address Register; in the middle 1970's CICS programmers had to worry out the various xxxBARs...I think one of those was FRACTBAR...
Here's a straight IBM "BAR" from 1955.
Other early references:
1973 foo bar International Joint Council on Artificial Intelligence
1975 foo bar International Joint Council on Artificial Intelligence
I haven't been able to find any references to foo bar as "inverted foo signal" as suggested in RFC3092 and elsewhere.
Here are a some of even earlier F00s but I think they're coincidences/false positives:
Well another possible cause of this can be simple line break at end of each line and shebang line If you have been coding in windows IDE its possible that windows has added its own line break at the end of each line and when you try to run it on linux the line break cause problems
After a bit of trial and error... as mentioned in the possible answers, it turned out to require xfs_growfs
rather than resize2fs
.
CentOS 7,
fdisk /dev/xvda
Create new primary partition, set type as linux lvm
.
n
p
3
t
8e
w
Create a new primary volume and extend the volume group to the new volume.
partprobe
pvcreate /dev/xvda3
vgextend /dev/centos /dev/xvda3
Check the physical volume for free space, extend the logical volume with the free space.
vgdisplay -v
lvextend -l+288 /dev/centos/root
Finally perform an online resize to resize the logical volume, then check the available space.
xfs_growfs /dev/centos/root
df -h
Use a document.ready()
event around your call.
$(document).ready(function () {
$('#memberModal').modal('show');
});
jsFiddle updated - http://jsfiddle.net/uvnggL8w/1/
Th part of an URI after the #
is called "fragment" and is by definition only available/processed on client side (see https://en.wikipedia.org/wiki/Fragment_identifier).
On the client side, this can be accessed using javaScript with window.location.hash
.
Don't care if you are a moderator. I wrote my text towards my audience not as a technical writer
All you guys need to learn to navigate with tools that predate GPS. Something like a sextant, octant, backstaff or an astrolabe.
If you have receive the signal from 3 different locations then you only need to measure the signal strength and make a ratio from those locations. Simple triangle calculation where a2+b2=c2. The stronger the signal strength the closer the device is to the receiver.
I have seen that the new versions when you define the resulting entities better define them in the following way if you handle a different scheme, I had a similar problem
You must add System.ComponentModel.DataAnnotations.Schema
using System.ComponentModel.DataAnnotations.Schema;
[Table("InstitucionesMilitares", Schema = "configuracion")]
You can find another native iOS solution using Swift 4 and Xcode 9 at below. Native AVFoundation
framework used with in this solution.
First part is the a subclass of UIViewController
which have related setup and handler functions for AVCaptureSession
.
import UIKit
import AVFoundation
class BarCodeScannerViewController: UIViewController {
let captureSession = AVCaptureSession()
var videoPreviewLayer: AVCaptureVideoPreviewLayer!
var initialized = false
let barCodeTypes = [AVMetadataObject.ObjectType.upce,
AVMetadataObject.ObjectType.code39,
AVMetadataObject.ObjectType.code39Mod43,
AVMetadataObject.ObjectType.code93,
AVMetadataObject.ObjectType.code128,
AVMetadataObject.ObjectType.ean8,
AVMetadataObject.ObjectType.ean13,
AVMetadataObject.ObjectType.aztec,
AVMetadataObject.ObjectType.pdf417,
AVMetadataObject.ObjectType.itf14,
AVMetadataObject.ObjectType.dataMatrix,
AVMetadataObject.ObjectType.interleaved2of5,
AVMetadataObject.ObjectType.qr]
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
setupCapture()
// set observer for UIApplicationWillEnterForeground, so we know when to start the capture session again
NotificationCenter.default.addObserver(self,
selector: #selector(willEnterForeground),
name: .UIApplicationWillEnterForeground,
object: nil)
}
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
// this view is no longer topmost in the app, so we don't need a callback if we return to the app.
NotificationCenter.default.removeObserver(self,
name: .UIApplicationWillEnterForeground,
object: nil)
}
// This is called when we return from another app to the scanner view
@objc func willEnterForeground() {
setupCapture()
}
func setupCapture() {
var success = false
var accessDenied = false
var accessRequested = false
let authorizationStatus = AVCaptureDevice.authorizationStatus(for: .video)
if authorizationStatus == .notDetermined {
// permission dialog not yet presented, request authorization
accessRequested = true
AVCaptureDevice.requestAccess(for: .video,
completionHandler: { (granted:Bool) -> Void in
self.setupCapture();
})
return
}
if authorizationStatus == .restricted || authorizationStatus == .denied {
accessDenied = true
}
if initialized {
success = true
} else {
let deviceDiscoverySession = AVCaptureDevice.DiscoverySession(deviceTypes: [.builtInWideAngleCamera,
.builtInTelephotoCamera,
.builtInDualCamera],
mediaType: .video,
position: .unspecified)
if let captureDevice = deviceDiscoverySession.devices.first {
do {
let videoInput = try AVCaptureDeviceInput(device: captureDevice)
captureSession.addInput(videoInput)
success = true
} catch {
NSLog("Cannot construct capture device input")
}
} else {
NSLog("Cannot get capture device")
}
}
if success {
DispatchQueue.global().async {
self.captureSession.startRunning()
DispatchQueue.main.async {
let captureMetadataOutput = AVCaptureMetadataOutput()
self.captureSession.addOutput(captureMetadataOutput)
let newSerialQueue = DispatchQueue(label: "barCodeScannerQueue") // in iOS 11 you can use main queue
captureMetadataOutput.setMetadataObjectsDelegate(self, queue: newSerialQueue)
captureMetadataOutput.metadataObjectTypes = self.barCodeTypes
self.videoPreviewLayer = AVCaptureVideoPreviewLayer(session: self.captureSession)
self.videoPreviewLayer.videoGravity = .resizeAspectFill
self.videoPreviewLayer.frame = self.view.layer.bounds
self.view.layer.addSublayer(self.videoPreviewLayer)
}
}
initialized = true
} else {
// Only show a dialog if we have not just asked the user for permission to use the camera. Asking permission
// sends its own dialog to th user
if !accessRequested {
// Generic message if we cannot figure out why we cannot establish a camera session
var message = "Cannot access camera to scan bar codes"
#if (arch(i386) || arch(x86_64)) && (!os(macOS))
message = "You are running on the simulator, which does not hae a camera device. Try this on a real iOS device."
#endif
if accessDenied {
message = "You have denied this app permission to access to the camera. Please go to settings and enable camera access permission to be able to scan bar codes"
}
let alertPrompt = UIAlertController(title: "Cannot access camera", message: message, preferredStyle: .alert)
let confirmAction = UIAlertAction(title: "OK", style: .default, handler: { (action) -> Void in
self.navigationController?.popViewController(animated: true)
})
alertPrompt.addAction(confirmAction)
self.present(alertPrompt, animated: true, completion: nil)
}
}
}
func handleCapturedOutput(metadataObjects: [AVMetadataObject]) {
if metadataObjects.count == 0 {
return
}
guard let metadataObject = metadataObjects.first as? AVMetadataMachineReadableCodeObject else {
return
}
if barCodeTypes.contains(metadataObject.type) {
if let metaDataString = metadataObject.stringValue {
captureSession.stopRunning()
displayResult(code: metaDataString)
return
}
}
}
func displayResult(code: String) {
let alertPrompt = UIAlertController(title: "Bar code detected", message: code, preferredStyle: .alert)
if let url = URL(string: code) {
let confirmAction = UIAlertAction(title: "Launch URL", style: .default, handler: { (action) -> Void in
UIApplication.shared.open(url, options: [:], completionHandler: { (result) in
if result {
NSLog("opened url")
} else {
let alertPrompt = UIAlertController(title: "Cannot open url", message: nil, preferredStyle: .alert)
let confirmAction = UIAlertAction(title: "OK", style: .default, handler: { (action) -> Void in
})
alertPrompt.addAction(confirmAction)
self.present(alertPrompt, animated: true, completion: {
self.setupCapture()
})
}
})
})
alertPrompt.addAction(confirmAction)
}
let cancelAction = UIAlertAction(title: "Cancel", style: .cancel, handler: { (action) -> Void in
self.setupCapture()
})
alertPrompt.addAction(cancelAction)
present(alertPrompt, animated: true, completion: nil)
}
}
Second part is the extension of our UIViewController
subclass for AVCaptureMetadataOutputObjectsDelegate
where we catch the captured outputs.
extension BarCodeScannerViewController: AVCaptureMetadataOutputObjectsDelegate {
func metadataOutput(_ output: AVCaptureMetadataOutput, didOutput metadataObjects: [AVMetadataObject], from connection: AVCaptureConnection) {
handleCapturedOutput(metadataObjects: metadataObjects)
}
}
Update for Swift 4.2
.UIApplicationWillEnterForeground
changes as UIApplication.willEnterForegroundNotification
.
I've come across a cross-platform implementation of kbhit
at http://home.wlu.edu/~levys/software/kbhit.py (made edits to remove irrelevant code):
import os
if os.name == 'nt':
import msvcrt
else:
import sys, select
def kbhit():
''' Returns True if a keypress is waiting to be read in stdin, False otherwise.
'''
if os.name == 'nt':
return msvcrt.kbhit()
else:
dr,dw,de = select.select([sys.stdin], [], [], 0)
return dr != []
Make sure to read()
the waiting character(s) -- the function will keep returning True
until you do!
Since you using standard HTML you will need to define separate class for and manual set the rows to the classes.
You are using the ISO date string format which, according to this page, causes the date to be constructed using the UTC timezone:
Note: parsing of date strings with the Date constructor (and Date.parse, they are equivalent) is strongly discouraged due to browser differences and inconsistencies. Support for RFC 2822 format strings is by convention only. Support for ISO 8601 formats differs in that date-only strings (e.g. "1970-01-01") are treated as UTC, not local.
If you format the text differently, such as "Jan 01 1970"
, then (at least on my machine) it uses your local timezone.
A small Node.js HTTP server listening on port 9080, parsing GET or POST data and sending it back to the client as part of the response is:
var sys = require('sys'),
url = require('url'),
http = require('http'),
qs = require('querystring');
var server = http.createServer(
function (request, response) {
if (request.method == 'POST') {
var body = '';
request.on('data', function (data) {
body += data;
});
request.on('end',function() {
var POST = qs.parse(body);
//console.log(POST);
response.writeHead( 200 );
response.write( JSON.stringify( POST ) );
response.end();
});
}
else if(request.method == 'GET') {
var url_parts = url.parse(request.url,true);
//console.log(url_parts.query);
response.writeHead( 200 );
response.write( JSON.stringify( url_parts.query ) );
response.end();
}
}
);
server.listen(9080);
Save it as parse.js
, and run it on the console by entering "node parse.js".
Like Mertcan said, the best way to use scss is to create the project with that option:
ng new My_New_Project --style=scss
Angular-cli also adds an option to change the default css preprocessor after the project has been created by using the command:
ng set defaults.styleExt scss
For more info you can look here for their documentation:
git for-each-ref --format='%(refname:short) <- %(upstream:short)' refs/heads
will show a line for each local branch. A tracking branch will look like:
master <- origin/master
A non-tracking one will look like:
test <-
You need to merge the remote branch into your current branch by running git pull
.
If your local branch is already up-to-date, you may also need to run git pull --rebase
.
A quick google search also turned up this same question asked by another SO user: Cannot push to GitHub - keeps saying need merge. More details there.
Look here: http://en.cppreference.com/w/cpp/algorithm/sort.
It says:
template< class RandomIt, class Compare >
void sort( RandomIt first, RandomIt last, Compare comp );
bool cmp(const Type1 &a, const Type2 &b);
Also, here's an example of how you can use std::sort
using a custom C++14 polymorphic lambda:
std::sort(std::begin(container), std::end(container),
[] (const auto& lhs, const auto& rhs) {
return lhs.first < rhs.first;
});
Try this code:
final File f = new File(MyClass.class.getProtectionDomain().getCodeSource().getLocation().getPath());
replace 'MyClass
' with your class containing the main method.
Alternatively you can also use
System.getProperty("java.class.path")
Above mentioned System property provides
Path used to find directories and JAR archives containing class files. Elements of the class path are separated by a platform-specific character specified in the path.separator property.
The most efficient way is to take input make the logic and run
so the code is like this to make your own space maker
need = input("Write a string:- ")
result = ''
for character in need:
result = result + character + ' '
print(result) # to rid of space after O
but if you want to use what python give then use this code
need2 = input("Write a string:- ")
print(" ".join(need2))
This can be done without the use of hidden field. You have to take benefit of the JQuerys ability to make custom attributes on run time.
('#selector').autocomplete({
source: url,
select: function (event, ui) {
$("#txtAllowSearch").val(ui.item.label); // display the selected text
$("#txtAllowSearch").attr('item_id',ui.item.value); // save selected id to hidden input
}
});
$('#button').click(function() {
alert($("#txtAllowSearch").attr('item_id')); // get the id from the hidden input
});
Having requirements in requirements.txt
and egg_dir
as a directory
you can build your local cache:
$ pip download -r requirements.txt -d eggs_dir
then, using that "cache" is simple like:
$ pip install -r requirements.txt --find-links=eggs_dir
What you should do is to create a 9 patch image for edittext and set that image as edit text background. You can create 9 patches using this website
I am attaching a sample 9 patch image for your reference.Use it as edittext background and you will get an idea.Right click the image and select "save image as". When you save the image dont forget to give its extension as "9.png"
@RD /S /Q "D:\PHP_Projects\testproject\Release\testfolder"
Removes (deletes) a directory.
RMDIR [/S] [/Q] [drive:]path RD [/S] [/Q] [drive:]path /S Removes all directories and files in the specified directory in addition to the directory itself. Used to remove a directory tree. /Q Quiet mode, do not ask if ok to remove a directory tree with /S
Gulp uses micromatch under the hood for matching globs, so if you want to exclude any of the .min.js files, you can achieve the same by using an extended globbing feature like this:
src("'js/**/!(*.min).js")
Basically what it says is: grab everything at any level inside of js that doesn't end with *.min.js
I tried solution based on Laplacian filter from this post. It didn't help me. So, I tried the solution from this post and it was good for my case (but is slow):
import cv2
image = cv2.imread("test.jpeg")
height, width = image.shape[:2]
gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
def px(x, y):
return int(gray[y, x])
sum = 0
for x in range(width-1):
for y in range(height):
sum += abs(px(x, y) - px(x+1, y))
Less blurred image has maximum sum
value!
You can also tune speed and accuracy by changing step, e.g.
this part
for x in range(width - 1):
you can replace with this one
for x in range(0, width - 1, 10):
Here's what Oracle's documentation has to say:
By default the heap dump is created in a file called java_pid.hprof in the working directory of the VM, as in the example above. You can specify an alternative file name or directory with the
-XX:HeapDumpPath=
option. For example-XX:HeapDumpPath=/disk2/dumps
will cause the heap dump to be generated in the/disk2/dumps
directory.
Use a RotateAnimation
, setting the pivot point to the centre of your image.
RotateAnimation anim = new RotateAnimation(0f, 350f, 15f, 15f);
anim.setInterpolator(new LinearInterpolator());
anim.setRepeatCount(Animation.INFINITE);
anim.setDuration(700);
// Start animating the image
final ImageView splash = (ImageView) findViewById(R.id.splash);
splash.startAnimation(anim);
// Later.. stop the animation
splash.setAnimation(null);
As MultiPartEntity
is deprecated. So here is the new way to do it! And you only need httpcore.jar(latest)
and httpmime.jar(latest)
download them from Apache site.
try
{
HttpClient client = new DefaultHttpClient();
HttpPost post = new HttpPost(URL);
MultipartEntityBuilder entityBuilder = MultipartEntityBuilder.create();
entityBuilder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);
entityBuilder.addTextBody(USER_ID, userId);
entityBuilder.addTextBody(NAME, name);
entityBuilder.addTextBody(TYPE, type);
entityBuilder.addTextBody(COMMENT, comment);
entityBuilder.addTextBody(LATITUDE, String.valueOf(User.Latitude));
entityBuilder.addTextBody(LONGITUDE, String.valueOf(User.Longitude));
if(file != null)
{
entityBuilder.addBinaryBody(IMAGE, file);
}
HttpEntity entity = entityBuilder.build();
post.setEntity(entity);
HttpResponse response = client.execute(post);
HttpEntity httpEntity = response.getEntity();
result = EntityUtils.toString(httpEntity);
Log.v("result", result);
}
catch(Exception e)
{
e.printStackTrace();
}
import re
if re.search('(?i)Mandy Pande:', line):
...
I was comparing worldcitiesdatabae.info with www.worldcitiesdatabase.com and it appears the latter one to be more resourceful. However, maxmind has a free database so then why buy a cities database. Just get the free one and there is lot of help available on internet about maxmind db. If you put in extra efforts then you can save those few bucks :)
Try it, learn it:
DECLARE @r INT = 5
DECLARE @i INT = 0
DECLARE @F varchar(max) = ''
WHILE @i < @r
BEGIN
DECLARE @j INT = 0
DECLARE @o varchar(max) = ''
WHILE @j < @r - @i - 1
BEGIN
SET @o = @o + ' '
SET @j += 1
END
DECLARE @k INT = 0
WHILE @k < @i + 1
BEGIN
SET @o = @o + ' *' -- '*'
SET @k += 1
END
SET @i += 1
SET @F = @F + @o + CHAR(13)
END
PRINT @F
With date:
DECLARE @d DATE = '2019-11-01'
WHILE @d < GETDATE()
BEGIN
PRINT @d
SET @d = DATEADD(DAY,1,@d)
END
PRINT 'n'
PRINT @d
Problem Cause
In mac os image rendering back end of matplotlib (what-is-a-backend to render using the API of Cocoa by default). There are Qt4Agg and GTKAgg and as a back-end is not the default. Set the back end of macosx that is differ compare with other windows or linux os.
Solution
~/.matplotlib
. ~/.matplotlib/matplotlibrc
there and add the following code: backend: TkAgg
From this link you can try different diagrams.
We published it today after having 'Release this version'. It took 15 minutes to show on the App Store.
This is due to App Store will sync the data across servers.
Try this. It works for me:
mkdir <repos>/tags/Release1.0
svn commit <repos>/tags/Release1.0
svn copy <repos>/trunk/* <repos>/tag/Release1.0
svn commit <repos/tags/Release1.0 -m "Tagging Release1.0"
If you run "dir c:\
", the last line will give you the free disk space.
Edit:
Better solution: "fsutil volume diskfree c:
"
You mean something like this?
<?php
$jsonurl = "http://search.twitter.com/trends.json";
$json = file_get_contents($jsonurl,0,null,null);
$json_output = json_decode($json);
foreach ( $json_output->trends as $trend )
{
echo "{$trend->name}\n";
}
I faced this problem where the following query doesn't work as expected:
select 1 where getdate()<>null
we expect it to show 1 because getdate() doesn't return null. I guess it has something to do with SQL failing to cast null as datetime and skipping the row! of course we know we should use IS or IS NOT keywords to compare a variable with null but when comparing two parameters it gets hard to handle the null situation. as a solution you can create your own compare function like the following:
CREATE FUNCTION [dbo].[fnCompareDates]
(
@DateTime1 datetime,
@DateTime2 datetime
)
RETURNS bit
AS
BEGIN
if (@DateTime1 is null and @DateTime2 is null) return 1;
if (@DateTime1 = @DateTime2) return 1;
return 0
END
and re writing the query like:
select 1 where dbo.fnCompareDates(getdate(),null)=0
NOTE: at the time of writing this answer, the EF-relation was unclear (that was edited into the question after this was written). For correct approach with EF, check Mandeeps answer.
You can use the DateTime.Date
property to perform a date-only comparison.
DateTime a = GetFirstDate();
DateTime b = GetSecondDate();
if (a.Date.Equals(b.Date))
{
// the dates are equal
}
Remove dotted outline from links, button and input element.
a:focus, a:active,
button::-moz-focus-inner,
input[type="reset"]::-moz-focus-inner,
input[type="button"]::-moz-focus-inner,
input[type="submit"]::-moz-focus-inner {
border: 0;
outline : 0;
}
SIGINT can be send to program using windows-kill, by syntax windows-kill -SIGINT PID
, where PID
can be obtained by Microsoft's pslist.
Regarding catching SIGINTs, if your program is in Python then you can implement SIGINT processing/catching like in this solution.
Use insert
if you want to insert a new element. insert
will not
overwrite an existing element, and you can verify that there was no
previously exising element:
if ( !myMap.insert( std::make_pair( key, value ) ).second ) {
// Element already present...
}
Use []
if you want to overwrite a possibly existing element:
myMap[ key ] = value;
assert( myMap.find( key )->second == value ); // post-condition
This form will overwrite any existing entry.
Here is generic labels width for all form labels. Nothing fix width.
call setLabelWidth calculator with all the labels. This function will load all labels on UI and find out maximum label width. Apply return value of below function to all the labels.
this.setLabelWidth = function (labels) {
var d = labels.join('<br>'),
dummyelm = jQuery("#lblWidthCalcHolder"),
width;
dummyelm.empty().html(d);
width = Math.ceil(dummyelm[0].getBoundingClientRect().width);
width = width > 0 ? width + 5: width;
//this.resetLabels(); //to reset labels.
var element = angular.element("#lblWidthCalcHolder")[0];
element.style.visibility = "hidden";
//Removing all the lables from the element as width is calculated and the element is hidden
element.innerHTML = "";
return {
width: width,
validWidth: width !== 0
};
};
Running in a Docker container introduced a whole slew of additional problems for connecting so hopefully this helps someone. I ended up needed to add the following options which I'll explain below:
-Dcom.sun.management.jmxremote=true
-Dcom.sun.management.jmxremote.local.only=false
-Dcom.sun.management.jmxremote.authenticate=false
-Dcom.sun.management.jmxremote.ssl=false
-Djava.rmi.server.hostname=${DOCKER_HOST_IP}
-Dcom.sun.management.jmxremote.port=9999
-Dcom.sun.management.jmxremote.rmi.port=9998
DOCKER_HOST_IP
Unlike using jconsole locally, you have to advertise a different IP than you'll probably see from within the container. You'll need to replace ${DOCKER_HOST_IP}
with the externally resolvable IP (DNS Name) of your Docker host.
JMX Remote & RMI Ports
It looks like JMX also requires access to a remote management interface (jstat) that uses a different port to transfer some data when arbitrating the connection. I didn't see anywhere immediately obvious in jconsole
to set this value. In the linked article the process was:
jconsole
with logging enabledjconsole
attempted to useiptables
/firewall
rules as necessary to allow that port to connectWhile that works, it's certainly not an automatable solution. I opted for an upgrade from jconsole to VisualVM since it let's you to explicitly specify the port on which jstatd
is running. In VisualVM, add a New Remote Host and update it with values that correlate to the ones specified above:
Then right-click the new Remote Host Connection and Add JMX Connection...
Don't forget to check the checkbox for Do not require SSL connection
. Hopefully, that should allow you to connect.
Bash 4+ examples. Note: not using quotes will cause issues when words contain spaces, etc. Always quote in Bash IMO.
Here are some examples Bash 4+:
Example 1, check for 'yes' in string (case insensitive):
if [[ "${str,,}" == *"yes"* ]] ;then
Example 2, check for 'yes' in string (case insensitive):
if [[ "$(echo "$str" | tr '[:upper:]' '[:lower:]')" == *"yes"* ]] ;then
Example 3, check for 'yes' in string (case sensitive):
if [[ "${str}" == *"yes"* ]] ;then
Example 4, check for 'yes' in string (case sensitive):
if [[ "${str}" =~ "yes" ]] ;then
Example 5, exact match (case sensitive):
if [[ "${str}" == "yes" ]] ;then
Example 6, exact match (case insensitive):
if [[ "${str,,}" == "yes" ]] ;then
Example 7, exact match:
if [ "$a" = "$b" ] ;then
The second parameter of the callback function passed to each() will contain the actual DOM element and not a jQuery wrapper object. You can call the getAttribute() method of the element:
$('#category_sorting_form_save').click(function() {
var elements = $("#category_sorting_elements > div");
$.each(elements, function(key, value) {
console.info(key, ": ", value);
console.info("cat_id: ", value.getAttribute('cat_id'));
});
});
Or wrap the element in a jQuery object yourself:
$('#category_sorting_form_save').click(function() {
var elements = $("#category_sorting_elements > div");
$.each(elements, function(key, value) {
console.info(key, ": ", value);
console.info("cat_id: ", $(value).attr('cat_id'));
});
});
Or simply use $(this)
:
$('#category_sorting_form_save').click(function() {
var elements = $("#category_sorting_elements > div");
$.each(elements, function() {
console.info("cat_id: ", $(this).attr('cat_id'));
});
});
exit(X)
, where X is a number (according to the doc) should work.
But it is not recommended by Apple and won't be accepted by the AppStore.
Why? Because of these guidelines (one of my app got rejected):
We found that your app includes a UI control for quitting the app. This is not in compliance with the iOS Human Interface Guidelines, as required by the App Store Review Guidelines.
Please refer to the attached screenshot/s for reference.
The iOS Human Interface Guidelines specify,
"Always Be Prepared to Stop iOS applications stop when people press the Home button to open a different application or use a device feature, such as the phone. In particular, people don’t tap an application close button or select Quit from a menu. To provide a good stopping experience, an iOS application should:
Save user data as soon as possible and as often as reasonable because an exit or terminate notification can arrive at any time.
Save the current state when stopping, at the finest level of detail possible so that people don’t lose their context when they start the application again. For example, if your app displays scrolling data, save the current scroll position."
> It would be appropriate to remove any mechanisms for quitting your app.
Plus, if you try to hide that function, it would be understood by the user as a crash.
If you are using a more modern version of Rails and it uses Puma as the web server, you can run the following command to find the stuck Puma process:
ps aux | grep puma
It will result in output similar to this:
85923 100.0 0.8 2682420 131324 s004 R+ 2:54pm 3:27.92 puma 3.12.0 (tcp://0.0.0.0:3010) [my-app]
92463 0.0 0.0 2458404 1976 s008 S+ 3:09pm 0:00.00 grep puma
You want the process that is not referring to grep
. In this case, the process ID is 85923.
I can then run the following command to kill that process:
kill -9 85923
You don't have to always use a weak reference. If your block is not retained, but executed and then discarded, you can capture self strongly, as it will not create a retain cycle. In some cases, you even want the block to hold the self until the completion of the block so it does not deallocate prematurely. If, however, you capture the block strongly, and inside capture self, it will create a retain cycle.
In Java 8:
List<WorldLocation> locations = new ArrayList<>();
.getMap(locations.stream().toArray(WorldLocation[]::new));
I don't know if you managed to resolve this but I have recently experienced a similar problem where the For loop left one view each time. I found this was because the self.subviews was mutated (maybe) when the removeFromSuperview() was called.
To fix this I did:
let subViews: Array = self.subviews.copy()
for (var subview: NSView!) in subViews
{
subview.removeFromSuperview()
}
By doing .copy(), I could perform the removal of each subview while mutating the self.subviews array. This is because the copied array (subViews) contains all of the references to the objects and is not mutated.
EDIT: In your case I think you would use:
let theSubviews: Array = container_view.subviews.copy()
for (var view: NSView!) in theSubviews
{
view.removeFromSuperview()
}
XSD defines a schema which is a definition of how an XML document can be structured. You can use it to check that a given XML document is valid and follows the rules you've laid out in the schema.
WSDL is a XML document that describes a web service. It shows which operations are available and how data should be structured to send to those operations.
WSDL documents have an associated XSD that show what is valid to put in a WSDL document.
As Ennui mentioned, IE 10 supports the -ms
prefixed version of Flexbox (IE 11 supports it unprefixed). The errors I can see in your code are:
display: -ms-flexbox
instead of display: -ms-flex
flex
values, like flex: 0 1 auto
to avoid ambiguitySo the final updated code is...
.flexbox form {
display: -webkit-flex;
display: -moz-flex;
display: -ms-flexbox;
display: -o-flex;
display: flex;
/* Direction defaults to 'row', so not really necessary to specify */
-webkit-flex-direction: row;
-moz-flex-direction: row;
-ms-flex-direction: row;
-o-flex-direction: row;
flex-direction: row;
}
.flexbox form input[type=submit] {
width: 31px;
}
.flexbox form input[type=text] {
width: auto;
/* Flex should have 3 values which is shorthand for
<flex-grow> <flex-shrink> <flex-basis> */
-webkit-flex: 1 1 auto;
-moz-flex: 1 1 auto;
-ms-flex: 1 1 auto;
-o-flex: 1 1 auto;
flex: 1 1 auto;
/* I don't think you need 'display: flex' on child elements * /
display: -webkit-flex;
display: -moz-flex;
display: -ms-flex;
display: -o-flex;
display: flex;
/**/
}
I made a mix of the answers here, took the code of @Julian and ideas from the others, seems clearer to me, this is what's left:
//store the element
var $cache = $('.my-sticky-element');
//store the initial position of the element
var vTop = $cache.offset().top - parseFloat($cache.css('marginTop').replace(/auto/, 0));
$(window).scroll(function (event) {
// what the y position of the scroll is
var y = $(this).scrollTop();
// whether that's below the form
if (y >= vTop) {
// if so, ad the fixed class
$cache.addClass('stuck');
} else {
// otherwise remove it
$cache.removeClass('stuck');
}
});
.my-sticky-element.stuck {
position:fixed;
top:0;
box-shadow:0 2px 4px rgba(0, 0, 0, .3);
}
Edit: As described in this answer, newer versions of MacOS now have native support for rebinding Caps Lock to Escape. Thus it is no longer necessary to install third-party software to achieve this.
Here's my attempt at a comprehensive, visual walk-through answer (with links) of how to achieve this using Seil (formerly known as PCKeyboardHack
).
In the popup dialog set Caps Lock Key to No Action
:
2) Now, click here to download Seil and install it:
3) After the installation you will have a new Application installed ( Mountain Lion and newer ) and if you are on an older OS you may have to check for a new System Preferences pane:
4) Check the box that says "Change Caps Lock" and enter "53" as the code for the escape key:
And you're done! If it doesn't work immediately, you may need to restart your machine.
You may also want to check out KeyRemap4MacBook which is actually the flagship keyboard remapping tool from pqrs.org
- it's also free.
If you like these tools you can make a donation. I have no affiliation with them but I've been using these tools for a long time and have to say the guys over there have been doing an excellent job maintaining these, adding features and fixing bugs.
Here's a screenshot to show a few of the (hundreds of) pre-selectable options:
PQRS also has a great utility called NoEjectDelay that you can use in combination with KeyRemap4MacBook for reprogramming the Eject key. After a little tweaking I have mine set to toggle the AirPort Wifi.
These utilities offer unlimited flexibility when remapping the Mac keyboard. Have fun!
This code snippet can convert 32bit little Endian number to Big Endian number.
#include <stdio.h>
main(){
unsigned int i = 0xfafbfcfd;
unsigned int j;
j= ((i&0xff000000)>>24)| ((i&0xff0000)>>8) | ((i&0xff00)<<8) | ((i&0xff)<<24);
printf("unsigned int j = %x\n ", j);
}
Sure, bind two handlers, one to click
and the other to dblclick
. Create a variable that increments on every click. then resets after a set delay. Inside the setTimeout function you can do something...
var DELAY = 2000,
clicks = 0,
timer = null;
$('a').bind({
click: function(e) {
clearTimeout(timer);
timer = setTimeout(function() {
clicks = 0;
}, DELAY);
if(clicks === 1) {
alert(clicks);
//do something here
clicks = 0;
}
//Increment clicks
clicks++;
},
dblclick: function(e) {
e.preventDefault(); //don't do anything
}
});
Check this basic code to setup html server. its work for me.
var http = require('http'), fs = require('fs'); fs.readFile('./index.html', function (err, html) { if (err) { throw err; } http.createServer(function(request, response) { response.writeHeader(200, {"Content-Type": "text/html"}); response.write(html); response.end(); }).listen(8000); });
You need to cast the array - the returned array is actually of the requested type, i.e. myEnum[]
if you ask for typeof(myEnum)
:
myEnum[] values = (myEnum[]) Enum.GetValues(typeof(myEnum));
Then values[0]
etc
The problem is the std namespace you are missing. cout
is in the std namespace.
Add using namespace std;
after the #include
This is a known issue with Chrome.
Here's the link in the bug tracker:
Do you only need to load jquery?
1) Like the other guides say, register your script in your functions.php file like so:
// register scripts
if (!is_admin()) {
// here is an example of loading a custom script in a /scripts/ folder in your theme:
wp_register_script('sandbox.common', get_bloginfo('template_url').'/scripts/common.js', array('jquery'), '1.0', true);
// enqueue these scripts everywhere
wp_enqueue_script('jquery');
wp_enqueue_script('sandbox.common');
}
2) Notice that we don't need to register jQuery because it's already in the core. Make sure wp_footer() is called in your footer.php and wp_head() is called in your header.php (this is where it will output the script tag), and jQuery will load on every page. When you enqueue jQuery with WordPress it will be in "no conflict" mode, so you have to use jQuery instead of $. You can deregister jQuery if you want and re-register your own by doing wp_deregister_script('jquery').
It's simple and understandable. Just copy paste this code and your issue will get resolved.For more conditions just change the value in pattern.and your work will done.
<input type="text" pattern="[0-9]{0,}" oninvalid="this.setCustomValidity('Please enter only numeric value. Special character are not allowed.')" oninput="setCustomValidity('')">
\n\r seems working for me.
I am using Xcode 4.6 with IOS 6.0 as target. Tested on iPhone 4S. Try it by yourself.
Feng Chiu
using Newtonsoft.Json.Linq;
using System.Linq;
using System.IO;
using System.Collections.Generic;
public List<string> GetJsonValues(string filePath, string propertyName)
{
List<string> values = new List<string>();
string read = string.Empty;
using (StreamReader r = new StreamReader(filePath))
{
var json = r.ReadToEnd();
var jObj = JObject.Parse(json);
foreach (var j in jObj.Properties())
{
if (j.Name.Equals(propertyName))
{
var value = jObj[j.Name] as JArray;
return values = value.ToObject<List<string>>();
}
}
return values;
}
}
See this http://mindprod.com/jgloss/htmlforms.html#IDVSNAME
What’s the difference? The short answer is, use both and don’t worry about it. But if you want to understand this goofiness, here’s the skinny:
id= is for use as a target like this:
<some-element id="XXX"></some-element>
for links like this:<a href="#XXX"
.
name= is also used to label the fields in the message send to a server with an HTTP (HyperText Transfer Protocol) GET or POST when you hit submit in a form.
id= labels the fields for use by JavaScript and Java DOM (Document Object Model). The names in name= must be unique within a form. The names in id= must be unique within the entire document.
Sometimes the name= and id= names will differ, because the server is expecting the same name from various forms in the same document or various radio buttons in the same form as in the example above. The id= must be unique; the name= must not be.
JavaScript needed unique names, but there were too many documents already out here without unique name= names, so the W3 people invented the id tag that was required to be unique. Unfortunately older browsers did not understand it. So you need both naming schemes in your forms.
NOTE: attribute "name" for some tags like <a>
is not supported in HTML5.
How to address your textbox depends on the HTML-code:
<!-- 1 --><input type="textbox" id="Tue" />
<!-- 2 --><input type="textbox" name="Tue" />
If you use the 'id' attribute:
var textbox = document.getElementById('Tue');
for 'name':
var textbox = document.getElementsByName('Tue')[0]
(Note that getElementsByName() returns all elements with the name as array, therefore we use [0] to access the first one)
Then, use the 'value' attribute:
textbox.value = 'Foobar';
I know this question is 5 years old, but for anybody wondering how to do this without re-rendering the main page. This solution uses the dart editor/scripting language.
You could have an <object>
tag that contains a data
attribute. Make the <object>
1px by 1px and then use something like dart to dynamically change the <object>
's data
attribute which re-renders the data
in the 1px by 1px object.
HTML Script:
<object id="external_source" type="text/html" data="" width="1px" height="1px">
</object>
<button id="button1" type="button">Start Script</button>
<script async type="application/dart" src="dartScript.dart"></script>
<script async src="packages/browser/dart.js"></script>
someScript.php:
<?php
echo 'hello world';
?>
dartScript.dart:
import 'dart:html';
InputElement button1;
ObjectElement externalSource;
void main() {
button1 = querySelector('#button1')
..onClick.listen(runExternalSource);
externalSource = querySelector('#external_source');
}
void runExternalSource(Event e) {
externalSource.setAttribute('data', 'someScript.php');
}
So long as you aren't posting any information and you are just looking to run a script, this should work just fine.
Just build the dart script using "pub Build(generate JS)" and then upload the package onto your server.
Try this code, to remove the background drawable (@drawable/bg) programmatically, just we need to provide null as a parameter.
Button btn= new Button(this);
btn.setText("HI");
btn.setBackground(null);
The problem is still your pg_hba.conf
file (/etc/postgresql/9.1/main/pg_hba.conf*
).
This line:
local all postgres peer
Should be:
local all postgres md5
* If you can't find this file, running locate pg_hba.conf
should show you where the file is.
After altering this file, don't forget to restart your PostgreSQL server. If you're on Linux, that would be sudo service postgresql restart
.
These are brief descriptions of both options according to the official PostgreSQL docs on authentication methods.
The peer authentication method works by obtaining the client's operating system user name from the kernel and using it as the allowed database user name (with optional user name mapping). This method is only supported on local connections.
The password-based authentication methods are md5 and password. These methods operate similarly except for the way that the password is sent across the connection, namely MD5-hashed and clear-text respectively.
If you are at all concerned about password "sniffing" attacks then md5 is preferred. Plain password should always be avoided if possible. However, md5 cannot be used with the db_user_namespace feature. If the connection is protected by SSL encryption then password can be used safely (though SSL certificate authentication might be a better choice if one is depending on using SSL).
Sample location for pg_hba.conf
:
/etc/postgresql/9.1/main/pg_hba.conf
yyyy-mm-dd :
/^((((19|[2-9]\d)\d{2})\-(0[13578]|1[02])\-(0[1-9]|[12]\d|3[01]))|(((19|[2-9]\d)\d{2})\-(0[13456789]|1[012])\-(0[1-9]|[12]\d|30))|(((19|[2-9]\d)\d{2})\-02\-(0[1-9]|1\d|2[0-8]))|(((1[6-9]|[2-9]\d)(0[48]|[2468][048]|[13579][26])|((16|[2468][048]|[3579][26])00))\-02\-29))$/g
yyyy/mm/dd :
/^((((19|[2-9]\d)\d{2})\/(0[13578]|1[02])\/(0[1-9]|[12]\d|3[01]))|(((19|[2-9]\d)\d{2})\/(0[13456789]|1[012])\/(0[1-9]|[12]\d|30))|(((19|[2-9]\d)\d{2})\/02\/(0[1-9]|1\d|2[0-8]))|(((1[6-9]|[2-9]\d)(0[48]|[2468][048]|[13579][26])|((16|[2468][048]|[3579][26])00))\/02\/29))$/g
mm-dd-yyyy :
/^(((0[13578]|1[02])\-(0[1-9]|[12]\d|3[01])\-((19|[2-9]\d)\d{2}))|((0[13456789]|1[012])\-(0[1-9]|[12]\d|30)\-((19|[2-9]\d)\d{2}))|(02\-(0[1-9]|1\d|2[0-8])\-((19|[2-9]\d)\d{2}))|(02\-29\-((1[6-9]|[2-9]\d)(0[48]|[2468][048]|[13579][26])|((16|[2468][048]|[3579][26])00))))$/g
mm/dd/yyyy :
/^(((0[13578]|1[02])\/(0[1-9]|[12]\d|3[01])\/((19|[2-9]\d)\d{2}))|((0[13456789]|1[012])\/(0[1-9]|[12]\d|30)\/((19|[2-9]\d)\d{2}))|(02\/(0[1-9]|1\d|2[0-8])\/((19|[2-9]\d)\d{2}))|(02\/29\/((1[6-9]|[2-9]\d)(0[48]|[2468][048]|[13579][26])|((16|[2468][048]|[3579][26])00))))$/g
dd/mm/yyyy :
/^(((0[1-9]|[12]\d|3[01])\/(0[13578]|1[02])\/((19|[2-9]\d)\d{2}))|((0[1-9]|[12]\d|30)\/(0[13456789]|1[012])\/((19|[2-9]\d)\d{2}))|((0[1-9]|1\d|2[0-8])\/02\/((19|[2-9]\d)\d{2}))|(29\/02\/((1[6-9]|[2-9]\d)(0[48]|[2468][048]|[13579][26])|((16|[2468][048]|[3579][26])00))))$/g
dd-mm-yyyy :
/^(((0[1-9]|[12]\d|3[01])\-(0[13578]|1[02])\-((19|[2-9]\d)\d{2}))|((0[1-9]|[12]\d|30)\-(0[13456789]|1[012])\-((19|[2-9]\d)\d{2}))|((0[1-9]|1\d|2[0-8])\-02\-((19|[2-9]\d)\d{2}))|(29\-02\-((1[6-9]|[2-9]\d)(0[48]|[2468][048]|[13579][26])|((16|[2468][048]|[3579][26])00))))$/g
Since I had troubles understanding this post here is a simple explanation for people like me. It is useful if:
Then here is what you need to do:
SRV records:
_minecraft._tcp.1.12 IN SRV 1 100 25567 1.12.<your-domain-name.com>.
_minecraft._tcp.1.13 IN SRV 1 100 25566 1.13.<your-domain-name.com>.
(I did not need a srv record for 1.14 since my 1.14 minecraft server was already on the 25565 port which is the default port of minecraft.)
And the A records:
1.12 IN A <your server IP>
1.13 IN A <your server IP>
1.14 IN A <your server IP>
Smoke tests have been explained here already and is simple. Regression tests come under integration tests.
Automated tests can be divided into just two.
Unit tests and integration tests (this is all that matters)
I would call use the phrase "long test" (LT) for all tests like integration tests, functional tests, regression tests, UI tests, etc. And unit tests as "short test".
An LT example could be, automatically loading a web page, logging in to the account and buying a book. If the test passes it is more likely to run on live site the same way(hence the 'better sleep' reference). Long = distance between web page (start) and database (end).
And this is a great article discussing the benefits of integration testing (long test) over unit testing.
According to the Jetbrains folks, it will have to be these, as they are for the one wearing the shirt: (Got that from Devoxx)
The various primitive wrappers, e.g., Integer
are immutable so there's really not a more concise way to do what you're asking unless you can do it with something like AtomicLong. I can give that a go in a minute and update. BTW, Hashtable is a part of the Collections Framework.
You just need to set selector
of button
in your layout file.
<Button
android:id="@+id/button1"
android:background="@drawable/selector_xml_name"
android:layout_width="200dp"
android:layout_height="126dp"
android:text="Hello" />
and done.
Edit
Following is button_effect.xml
file in drawable
directory
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@drawable/numpad_button_bg_selected" android:state_selected="true"></item>
<item android:drawable="@drawable/numpad_button_bg_pressed" android:state_pressed="true"></item>
<item android:drawable="@drawable/numpad_button_bg_normal"></item>
</selector>
In this, you can see that there are 3 drawables, you just need to place this button_effect
style to your button
, as i wrote above. You just need to replace selector_xml_name
with button_effect
.
Just right click in your project go Manage NuGet Packages search for Microsoft.AspNet.WebApi.Client install it and you will have access to the extension method.
I had a long-running next-version
branch with tons of deletions to files that had changed on develop
, files that had been added in different places on both branches, etc.
I wanted to take the entire contents of the next-version
branch into develop
, all in one whopping merge commit.
The combination of the above commands that worked for me was:
git merge -X theirs next-version
# lots of files left that were modified on develop but deleted on next-version
git checkout next-version .
# files removed, now add the deletions to the commit
git add .
# still have files that were added on develop; in my case they are all in web/
git rm -r web
Not a new answer, just combining bits from many answers, partly to reassure that you might need all of these answers.
as your variable bool is pointing to a null, you will always get a NullPointerException, you need to initialize the variable first somewhere with a not null value, and then modify it.
F:\PuppetLab\src\boxes>vagrant box add precise32 file:///F:/PuppetLab/src/boxes/precise32.box
==> box: Adding box 'precise32' (v0) for provider:
box: Downloading: file:///F:/PuppetLab/src/boxes/precise32.box
box: Progress: 100% (Rate: 1200k/s, Estimated time remaining: --:--:--)
==> box: Successfully added box 'precise32' (v0) for 'virtualbox'!
This works for me in my onClickListener
:
yourView.postDelayed(new Runnable() {
@Override
public void run() {
yourView.invalidate();
System.out.println("Height yourView: " + yourView.getHeight());
System.out.println("Width yourView: " + yourView.getWidth());
}
}, 1);
react-router
v4 introduces a new way to block navigation using Prompt
. Just add this to the component that you would like to block:
import { Prompt } from 'react-router'
const MyComponent = () => (
<React.Fragment>
<Prompt
when={shouldBlockNavigation}
message='You have unsaved changes, are you sure you want to leave?'
/>
{/* Component JSX */}
</React.Fragment>
)
This will block any routing, but not page refresh or closing. To block that, you'll need to add this (updating as needed with the appropriate React lifecycle):
componentDidUpdate = () => {
if (shouldBlockNavigation) {
window.onbeforeunload = () => true
} else {
window.onbeforeunload = undefined
}
}
onbeforeunload has various support by browsers.
From Java SE 6 HotSpot[tm] Virtual Machine Garbage Collection Tuning
the following
Excessive GC Time and OutOfMemoryError
The concurrent collector will throw an OutOfMemoryError if too much time is being spent in garbage collection: if more than 98% of the total time is spent in garbage collection and less than 2% of the heap is recovered, an OutOfMemoryError will be thrown. This feature is designed to prevent applications from running for an extended period of time while making little or no progress because the heap is too small. If necessary, this feature can be disabled by adding the option -XX:-UseGCOverheadLimit to the command line.
The policy is the same as that in the parallel collector, except that time spent performing concurrent collections is not counted toward the 98% time limit. In other words, only collections performed while the application is stopped count toward excessive GC time. Such collections are typically due to a concurrent mode failure or an explicit collection request (e.g., a call to System.gc()).
in conjunction with a passage further down
One of the most commonly encountered uses of explicit garbage collection occurs with RMIs distributed garbage collection (DGC). Applications using RMI refer to objects in other virtual machines. Garbage cannot be collected in these distributed applications without occasionally collection the local heap, so RMI forces full collections periodically. The frequency of these collections can be controlled with properties. For example,
java -Dsun.rmi.dgc.client.gcInterval=3600000
-Dsun.rmi.dgc.server.gcInterval=3600000
specifies explicit collection once per hour instead of the default rate of once per minute. However, this may also cause some objects to take much longer to be reclaimed. These properties can be set as high as Long.MAX_VALUE to make the time between explicit collections effectively infinite, if there is no desire for an upper bound on the timeliness of DGC activity.
Seems to imply that the evaluation period for determining the 98% is one minute long, but it might be configurable on Sun's JVM with the correct define.
Of course, other interpretations are possible.
/* Add css in your style */
.sticky-header {
position: fixed;
width: 100%;
left: 0;
top: 0;
z-index: 100;
border-top: 0;
transition: 0.3s;
}
/* and use this javascript code: */
$(document).ready(function() {
$(window).scroll(function () {
if ($(window).scrollTop() > ) {
$('.headercss').addClass('sticky-header');
} else{
$('.headercss').removeClass('sticky-header');
}
});
});
If you want to use calc in your CSS file use a polyfill like PolyCalc. Should be light enough to work on mobile browsers (e.g. below iOS 6 and below Android 4.4 phones).
I have been doing quite a bit of research and in attempt to resolve a different issue I ended up coming to a good portion of the solution in my other post here:
Angularjs - Form Post Data Not Posted?
The solution does not include uploading images currently but I intend to expand upon and create a clear and well working example. If updating these posts is possible I will keep them up to date all the way until a stable and easy to learn from example is compiled.
You may find set lbr
useful; with set wrap
on this will wrap but only cutting the line on whitespace and not in the middle of a word.
e.g.
without lbr the li
ne can be split on
a word
and
with lbr on the
line will be
split on
whitespace only
You are always passing in true to the toggleMethod, so it will always "show" the table. I would create a global variable that you can flip inside the toggle method instead.
Alternatively you can check the visibility state of the table instead of an explicit variable
ModelState.IsValid
tells you if any model errors have been added to ModelState
.
The default model binder will add some errors for basic type conversion issues (for example, passing a non-number for something which is an "int"). You can populate ModelState more fully based on whatever validation system you're using.
The sample DataAnnotations
model binder will fill model state with validation errors taken from the DataAnnotations
attributes on your model.
You're trying to use key functions with lambda functions.
Python and other languages like C# or F# use lambda functions.
Also, when it comes to key functions and according to the documentation
Both list.sort() and sorted() have a key parameter to specify a function to be called on each list element prior to making comparisons.
...
The value of the key parameter should be a function that takes a single argument and returns a key to use for sorting purposes. This technique is fast because the key function is called exactly once for each input record.
So, key functions have a parameter key and it can indeed receive a lambda function.
In Real Python there's a nice example of its usage. Let's say you have the following list
ids = ['id1', 'id100', 'id2', 'id22', 'id3', 'id30']
and want to sort through its "integers". Then, you'd do something like
sorted_ids = sorted(ids, key=lambda x: int(x[2:])) # Integer sort
and printing it would give
['id1', 'id2', 'id3', 'id22', 'id30', 'id100']
In your particular case, you're only missing to write key=
before lambda. So, you'd want to use the following
a = sorted(a, key=lambda x: x.modified, reverse=True)
Here's an example that puts the Now()
value in column A.
Sub move()
Dim i As Integer
Dim sh1 As Worksheet
Dim sh2 As Worksheet
Dim nextRow As Long
Dim copyRange As Range
Dim destRange As Range
Application.ScreenUpdating = False
Set sh1 = ActiveWorkbook.Worksheets("Sheet1")
Set sh2 = ActiveWorkbook.Worksheets("Sheet2")
Set copyRange = sh1.Range("A1:A5")
i = Application.WorksheetFunction.CountA(sh2.Range("B:B")) + 4
Set destRange = sh2.Range("B" & i)
destRange.Resize(1, copyRange.Rows.Count).Value = Application.Transpose(copyRange.Value)
destRange.Offset(0, -1).Value = Format(Now(), "MMM-DD-YYYY")
copyRange.Clear
Application.ScreenUpdating = True
End Sub
There are better ways of getting the last row in column B than using a While
loop, plenty of examples around here. Some are better than others but depend on what you're doing and what your worksheet structure looks like. I used one here which assumes that column B is ALL empty except the rows/records you're moving. If that's not the case, or if B1:B3
have some values in them, you'd need to modify or use another method. Or you could just use your loop, but I'd search for alternatives :)
df = pd.DataFrame({'Year': ['2014', '2015'], 'quarter': ['q1', 'q2']})
df['period'] = df[['Year', 'quarter']].apply(lambda x: ''.join(x), axis=1)
Yields this dataframe
Year quarter period
0 2014 q1 2014q1
1 2015 q2 2015q2
This method generalizes to an arbitrary number of string columns by replacing df[['Year', 'quarter']]
with any column slice of your dataframe, e.g. df.iloc[:,0:2].apply(lambda x: ''.join(x), axis=1)
.
You can check more information about apply() method here
I've found lots of posts across the web on the various ways to do the request, but none that actually show how to process the response synchronously on AWS Lambda.
Here's a Node 6.10.3 lambda function that uses an https request, collects and returns the full body of the response, and passes control to an unlisted function processBody
with the results. I believe http and https are interchangable in this code.
I'm using the async utility module, which is easier to understand for newbies. You'll need to push that to your AWS Stack to use it (I recommend the serverless framework).
Note that the data comes back in chunks, which are gathered in a global variable, and finally the callback is called when the data has end
ed.
'use strict';
const async = require('async');
const https = require('https');
module.exports.handler = function (event, context, callback) {
let body = "";
let countChunks = 0;
async.waterfall([
requestDataFromFeed,
// processBody,
], (err, result) => {
if (err) {
console.log(err);
callback(err);
}
else {
const message = "Success";
console.log(result.body);
callback(null, message);
}
});
function requestDataFromFeed(callback) {
const url = 'https://put-your-feed-here.com';
console.log(`Sending GET request to ${url}`);
https.get(url, (response) => {
console.log('statusCode:', response.statusCode);
response.on('data', (chunk) => {
countChunks++;
body += chunk;
});
response.on('end', () => {
const result = {
countChunks: countChunks,
body: body
};
callback(null, result);
});
}).on('error', (err) => {
console.log(err);
callback(err);
});
}
};
you will see your current bootstrap version in this "bootstrap.min.css/bootstrap.css" files, In the top section