Switch ruby version from 1.9 to 2.2 with rvm did the job for me
No, you shouldn't call those methods manually. At the end of the using
block the Dispose()
method is automatically called which will take care to free unmanaged resources (at least for standard .NET BCL classes such as streams, readers/writers, ...). So you could also write your code like this:
using (Stream responseStream = response.GetResponseStream())
using (StreamReader reader = new StreamReader(responseStream))
using (StreamWriter writer = new StreamWriter(filename))
{
int chunkSize = 1024;
while (!reader.EndOfStream)
{
char[] buffer = new char[chunkSize];
int count = reader.Read(buffer, 0, chunkSize);
if (count != 0)
{
writer.Write(buffer, 0, count);
}
}
}
The Close()
method calls Dispose()
.
If you use bash, then the terminal history is saved in a file called .bash_history. Delete it, and history will be gone.
However, for MySQL the better approach is not to enter the password in the command line. If you just specify the -p option, without a value, then you will be prompted for the password and it won't be logged.
Another option, if you don't want to enter your password every time, is to store it in a my.cnf file. Create a file named ~/.my.cnf with something like:
[client]
user = <username>
password = <password>
Make sure to change the file permissions so that only you can read the file.
Of course, this way your password is still saved in a plaintext file in your home directory, just like it was previously saved in .bash_history.
Add the css:
html,body{
height:100%;
}
.bg-img {
background: url(image.jpg) no-repeat center top;
background-size: cover;
height:100%;
}
And html is:
<div class="bg-mg"></div>
CSS: stretching background image to 100% width and height of screen?
What is the most efficient way to create HTML elements using jQuery?
Since it's about jQuery
then I think it's better to use this (clean) approach (you are using)
$('<div/>', {
'id':'myDiv',
'class':'myClass',
'text':'Text Only',
}).on('click', function(){
alert(this.id); // myDiv
}).appendTo('body');
This way, you can even use event handlers for the specific element like
$('<div/>', {
'id':'myDiv',
'class':'myClass',
'style':'cursor:pointer;font-weight:bold;',
'html':'<span>For HTML</span>',
'click':function(){ alert(this.id) },
'mouseenter':function(){ $(this).css('color', 'red'); },
'mouseleave':function(){ $(this).css('color', 'black'); }
}).appendTo('body');
But when you are dealing with lots of dynamic elements, you should avoid adding event handlers
in particular element, instead, you should use a delegated event handler, like
$(document).on('click', '.myClass', function(){
alert(this.innerHTML);
});
var i=1;
for(;i<=200;i++){
$('<div/>', {
'class':'myClass',
'html':'<span>Element'+i+'</span>'
}).appendTo('body');
}
So, if you create and append hundreds of elements with same class, i.e. (myClass
) then less memory will be consumed for event handling, because only one handler will be there to do the job for all dynamically inserted elements.
Update : Since we can use following approach to create a dynamic element
$('<input/>', {
'type': 'Text',
'value':'Some Text',
'size': '30'
}).appendTo("body");
But the size
attribute can't be set using this approach using jQuery-1.8.0
or later and here is an old bug report, look at this example using jQuery-1.7.2
which shows that size
attribute is set to 30
using above example but using same approach we can't set size
attribute using jQuery-1.8.3
, here is a non-working fiddle. So, to set the size
attribute, we can use following approach
$('<input/>', {
'type': 'Text',
'value':'Some Text',
attr: { size: "30" }
}).appendTo("body");
Or this one
$('<input/>', {
'type': 'Text',
'value':'Some Text',
prop: { size: "30" }
}).appendTo("body");
We can pass attr/prop
as a child object but it works in jQuery-1.8.0 and later
versions check this example but it won't work in jQuery-1.7.2 or earlier
(not tested in all earlier versions).
BTW, taken from jQuery
bug report
There are several solutions. The first is to not use it at all, since it doesn't save you any space and this improves the clarity of the code:
They advised to use following approach (works in earlier ones as well, tested in 1.6.4
)
$('<input/>')
.attr( { type:'text', size:50, autofocus:1 } )
.val("Some text").appendTo("body");
So, it is better to use this approach, IMO. This update is made after I read/found this answer and in this answer shows that if you use 'Size'(capital S)
instead of 'size'
then it will just work fine, even in version-2.0.2
$('<input>', {
'type' : 'text',
'Size' : '50', // size won't work
'autofocus' : 'true'
}).appendTo('body');
Also read about prop, because there is a difference, Attributes vs. Properties
, it varies through versions.
I did this for a <div>
on Chrome.
element.scrollTop - is the pixels hidden in top due to the scroll. With no scroll its value is 0.
element.scrollHeight - is the pixels of the whole div.
element.clientHeight - is the pixels that you see in your browser.
var a = element.scrollTop;
will be the position.
var b = element.scrollHeight - element.clientHeight;
will be the maximum value for scrollTop.
var c = a / b;
will be the percent of scroll [from 0 to 1].
You should use List
or array
instead
List<Integer> list = new ArrayList<Integer>();
list.add(1);
list.add(2);
list.add(3);
Or
int[] arr = new int[10];
arr[0]=1;
arr[1]=2;
Or even better
Map<String, Integer> map = new HashMap<String, Integer>();
map.put("n1", 1);
map.put("n2", 2);
//conditionally get
map.get("n1");
In addition to the still very relevant answer of jujule, I find it quite important to also be aware of the implications of order_by()
on distinct("field_name")
queries. This is, however, a Postgres only feature!
If you are using Postgres and if you define a field name that the query should be distinct for, then order_by()
needs to begin with the same field name (or field names) in the same sequence (there may be more fields afterward).
Note
When you specify field names, you must provide an order_by() in the QuerySet, and the fields in order_by() must start with the fields in distinct(), in the same order.
For example, SELECT DISTINCT ON (a) gives you the first row for each value in column a. If you don’t specify an order, you’ll get some arbitrary row.
If you want to e-g- extract a list of cities that you know shops in , the example of jujule would have to be adapted to this:
# returns an iterable Queryset of cities.
models.Shop.objects.order_by('city').values_list('city', flat=True).distinct('city')
This is a horrible problem and I'm happy to present an excellent solution; simple, efficient, and effective !
See below, the code shows using a flag to indicate when to return POSITION_NONE
public class ViewPagerAdapter extends PagerAdapter
{
// Members
private boolean mForceReinstantiateItem = false;
// This is used to overcome terrible bug that Google isn't fixing
// We know that getItemPosition() is called right after notifyDataSetChanged()
// Therefore, the fix is to return POSITION_NONE right after the notifyDataSetChanged() was called - but only once
@Override
public int getItemPosition(Object object)
{
if (mForceReinstantiateItem)
{
mForceReinstantiateItem = false;
return POSITION_NONE;
}
else
{
return super.getItemPosition(object);
}
}
public void setData(ArrayList<DisplayContent> newContent)
{
mDisplayContent = newContent;
mForceReinstantiateItem = true;
notifyDataSetChanged();
}
}
Basically, to make a cross domain AJAX requests, the requested server should allow the cross origin sharing of resources (CORS). You can read more about that from here: http://www.html5rocks.com/en/tutorials/cors/
In your scenario, you are setting the headers in the client which in fact needs to be set into http://localhost:8080/app server side code.
If you are using PHP Apache server, then you will need to add following in your .htaccess
file:
Header set Access-Control-Allow-Origin "*"
It’s because you tried to update a table without a WHERE that uses a KEY column.
The quick fix is to add SET SQL_SAFE_UPDATES=0; before your query :
SET SQL_SAFE_UPDATES=0;
Or
close the safe update mode. Edit -> Preferences -> SQL Editor -> SQL Editor remove Forbid UPDATE and DELETE statements without a WHERE clause (safe updates) .
BTW you can use TRUNCATE TABLE tablename;
to delete all the records .
Right-click on the module, select "Add framework support...", and check the "Maven" technology.
(This also creates a pom.xml
for you to modify.)
If you mean adding source repository elements, I think you need to do that manually–not sure.
Pre-IntelliJ 13 this won't convert the project to the Maven Standard Directory Layout, 13+ it will.
You can do it on a per file basis. Use the path attribute to include the filename
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<location path="YourFileNameHere.xml">
<system.webServer>
<staticContent>
<clientCache cacheControlMode="DisableCache" />
</staticContent>
</system.webServer>
</location>
</configuration>
Try to use:
require('events').EventEmitter.defaultMaxListeners = Infinity;
This can be done with PIL
. First, install it, then you can take a full screenshot like this:
import PIL.ImageGrab
im = PIL.ImageGrab.grab()
im.show()
In simple word we can say that #pragma mark -
is used for categorizing methods, so you can find your methods easily. It is very useful for long projects.
@John, Earlz and Nathan. The way I learned it at uni is: functions return values, methods don't. In some languages the syntax is/was actually different. Example (no specific language):
Method SetY(int y) ...
Function CalculateY(int x) As Integer ...
Most languages now use the same syntax for both versions, using void as a return type to say there actually isn't a return type. I assume it's because the syntax is more consistent and easier to change from method to function, and vice versa.
Use WSDL.EXE utility to generate a Web Service proxy from WSDL.
You'll get a long C# source file that contains a class that looks like this:
/// <remarks/>
[System.CodeDom.Compiler.GeneratedCodeAttribute("wsdl", "2.0.50727.42")]
[System.Diagnostics.DebuggerStepThroughAttribute()]
[System.ComponentModel.DesignerCategoryAttribute("code")]
[System.Web.Services.WebServiceBindingAttribute(Name="MyService", Namespace="http://myservice.com/myservice")]
public partial class MyService : System.Web.Services.Protocols.SoapHttpClientProtocol {
...
}
In your client-side, Web-service-consuming code:
When use CMS GC in jdk1.8 will appeare this error, i change the G1 Gc solve this problem.
-Xss512k -Xms6g -Xmx6g -XX:+UseG1GC -XX:MaxGCPauseMillis=200 -XX:InitiatingHeapOccupancyPercent=70 -XX:NewRatio=1 -XX:SurvivorRatio=6 -XX:G1ReservePercent=10 -XX:G1HeapRegionSize=32m -XX:ConcGCThreads=6 -Xloggc:gc.log -XX:+HeapDumpOnOutOfMemoryError -XX:+PrintGC -XX:+PrintGCDetails -XX:+PrintGCTimeStamps
In my case, I had made a stupid typo in the shebang.
So in case someone else on with fat fingers stumbles across this question:
Whoops: #!/usr/local/bin ruby
I meant to write: #!/usr/bin/env ruby
The vague error ZSH gives sent me down the wrong path:
ZSH: zsh: permission denied: ./foo.rb
Bash: bash: ./foo.rb: /usr/local/bin: bad interpreter: Permission denied
Managed to get answer after do some google..
echo "deb http://ppa.launchpad.net/webupd8team/java/ubuntu precise main" | tee -a /etc/apt/sources.list
echo "deb-src http://ppa.launchpad.net/webupd8team/java/ubuntu precise main" | tee -a /etc/apt/sources.list
apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys EEA14886
apt-get update
# Java 7
apt-get install oracle-java7-installer
# For Java 8 command is:
apt-get install oracle-java8-installer
Also may be helpful for ASP.NET MVC:
In an MVC app, you have to right-click on Default.aspx, which is the only ‘real’ web page in that solution. The default page displays ‘Browse with…’
Use "this.FinishAndRemoveTask();
" - it closes application properly
The solution needs to add these headers to the server response.
'Access-Control-Allow-Origin', '*'
'Access-Control-Allow-Methods', 'GET,POST,OPTIONS,DELETE,PUT'
If you have access to the server, you can add them and this will solve your problem
OR
You can try concatentaing this in front of the url:
https://cors-anywhere.herokuapp.com/
In iOS 9.3.1 and up: Settings > General > Device Management
You can implement it in your ViewDidLoad
Method:
continuebtn = [[UIButton alloc]initWithFrame:CGRectMake(10, 100, view1.frame.size.width-20, 40)];
[continuebtn setBackgroundColor:[UIColor grayColor]];
[continuebtn setTitle:@"Continue" forState:UIControlStateNormal];
continuebtn.layer.cornerRadius = 10;
continuebtn.layer.borderWidth =1.0;
continuebtn.layer.borderColor = [UIColor blackColor].CGColor;
[continuebtn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
[continuebtn addTarget:self action:@selector(continuetonext) forControlEvents:UIControlEventTouchUpInside];
[view1 addSubview:continuebtn];
Where continuetonext
is:
-(void)continuetonext
{
GeneratePasswordVC *u = [[GeneratePasswordVC alloc]init];
[self.navigationController pushViewController:u animated:YES];
}
Your question How can I just get the file-names (with paths)
Your syntax example find . -iname "*php" -exec grep -H myString {} \;
My Command suggestion
sudo find /home -name *.php
The output from this command on my Linux OS:
compose-sample-3/html/mail/contact_me.php
As you require the filename with path, enjoy!
hi set the readonly attribute to true from the code side or run time not from the design time
txtFingerPrints.BackColor = System.Drawing.SystemColors.Info;
txtFingerPrints.ReadOnly = true;
While LIKE
is suitable for this case, a more general purpose solution is to use instr
, which doesn't require characters in the search string to be escaped. Note: instr
is available starting from Sqlite 3.7.15.
SELECT *
FROM TABLE
WHERE instr(column, 'cats') > 0;
Also, keep in mind that LIKE
is case-insensitive, whereas instr
is case-sensitive.
why dont you add a "source" column to each of the queries with a static value like
select 'source 1' as Source, column1, column2...
from table1
UNION ALL
select 'source 2' as Source, column1, column2...
from table2
You can also use OFFSET:
OFFSET($A$10,-$B$1+1,0,$B$1)
It moves the range $A$10 up by $B$1-1 (becomes $A$6 ($A$5)) and then resizes the range to $B$1 rows (becomes $A$6:$A$10 ($A$5:$A$10))
Okay, so this is my solution. I know it's not using the pom.xml file. But I had the problem my programmme compiling and running on Netbeans but it failing when I tried Java -jar MyJarFile.jar. Now, I don't fully understand Maven and I think this why was having trouble getting Netbeans 8.0.2 to include my jar file in a library to put them into a jar file. I was thinking about how I used to use jar files with no Maven in Eclipse.
It's Maven that can compile all the dependanices and plugins. Not Netbeans. (If you can get Netbeans and be able to use java .jar to do this please tell me how (^.^)v )
[Solved - for Linux] by opening a terminal.
Then
cd /MyRootDirectoryForMyProject
Next
mvn org.apache.maven.plugins:maven-compiler-plugin:compile
Next
mvn install
This will create jar file in the target directory.
MyJarFile-1.0-jar-with-dependencies.jar
Now
cd target
(You may need to run: chmod +x MyJarFile-1.0-jar-with-dependencies.jar
)
And finally
java -jar MyJarFile-1.0-jar-with-dependencies.jar
Please see
https://cwiki.apache.org/confluence/display/MAVEN/LifecyclePhaseNotFoundException
I'll post this solution in on a couple of other pages with a similar problem. Hopefully I can save somebody from a week of frustration.
If your vectors are sorted*, check out set_union from <algorithm>.
set_union(A.begin(), A.end(), B.begin(), B.end(), AB.begin());
There's a more thorough example in the link
*thanks rlbond
A rather nice addition to @MartijnPieters answer is to get back a dictionary sorted by occurrence since Collections.most_common
only returns a tuple. I often couple this with a json output for handy log files:
from collections import Counter, OrderedDict
x = Counter({'a':5, 'b':3, 'c':7})
y = OrderedDict(x.most_common())
With the output:
OrderedDict([('c', 7), ('a', 5), ('b', 3)])
{
"c": 7,
"a": 5,
"b": 3
}
If you don't want the HTML to be escaped, look at the safe
filter and the autoescape
tag:
safe
:
{{ myhtml |safe }}
{% autoescape off %}
{{ myhtml }}
{% endautoescape %}
To encode the characters, you can use CGI.escapeHTML
:
string = CGI.escapeHTML('test "escaping" <characters>')
To decode them, there is CGI.unescapeHTML
:
CGI.unescapeHTML("test "unescaping" <characters>")
Of course, before that you need to include the CGI library:
require 'cgi'
And if you're in Rails, you don't need to use CGI to encode the string. There's the h
method.
<%= h 'escaping <html>' %>
Place this is your values-v21/styles.xml, to enable this on Lollipop:
<resources>
<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light">
<item name="colorPrimary">@color/color_primary</item>
<item name="colorPrimaryDark">@color/color_secondary</item>
<item name="colorAccent">@color/color_accent</item>
<item name="android:statusBarColor">@color/color_primary</item>
</style>
</resources>
For "100% of the browser window", if you mean this literally, you should use fixed positioning. The top, bottom, right, and left properties are then used to offset the divs edges from the respective edges of the viewport:
#nav, #content{position:fixed;top:0px;bottom:0px;}
#nav{left:0px;right:235px;}
#content{left:235px;right:0px}
This will set up a screen with the left 235 pixels devoted to the nav, and the right rest of the screen to content.
Note, however, you won't be able to scroll the whole screen at once. Though you can set it to scroll either pane individually, by applying overflow:auto
to either div.
Note also: fixed positioning is not supported in IE6 or earlier.
You can simply convert your radian result to degree by using
math.degrees and rounding appropriately to the required decimal places
for example
>>> round(math.degrees(math.asin(0.5)),2)
30.0
>>>
To define the file to import it's possible to use all folders common definitions. You just have to be aware that it's relative to file you are defining it. More about import option with examples you can check here.
Ubuntu 20.04:
For bash (for zsh, we would use .zshrc
of course)
echo '# Install Ruby Gems to ~/gems' >> ~/.bashrc
echo 'export GEM_HOME="$HOME/gems"' >> ~/.bashrc
echo 'export PATH="$HOME/gems/bin:$PATH"' >> ~/.bashrc
source ~/.bashrc
Uninstall the apt-version (ruby-full
) and reinstall it with snap
sudo apt-get remove ruby
sudo snap install ruby --classic
Download redis from Download Redis for windows
net start redis
Thats it.
all your code is okay only the things left is just go to the link https://myaccount.google.com/security
and keep scroll down and you will found Allow less secure apps: ON and keep ON, you will find no error.
It sounds like it's just a compiler warning.
Usage of scanf_s
prevents possible buffer overflow.
See: http://code.wikia.com/wiki/Scanf_s
Good explanation as to why scanf
can be dangerous: Disadvantages of scanf
So as suggested, you can try replacing scanf
with scanf_s
or disable the compiler warning.
<ul class="icons-ul">
<li><i class="icon-play-sign"></i> <a>option</a></li>
<li><i class="icon-play-sign"></i> <a>option</a></li>
<li><i class="icon-play-sign"></i> <a>option</a></li>
<li><i class="icon-play-sign"></i> <a>option</a></li>
<li><i class="icon-play-sign"></i> <a>option</a></li>
</ul>
All the font awesome icons comes default with Bootstrap.
The solution I have used is:
<svg>
<line x1="100" y1="100" x2="500" y2="100" style="stroke:black; stroke-width: 2"/>
<text x="150" y="105" style="stroke:white; stroke-width:0.6em">Hello World!</text>
<text x="150" y="105" style="fill:black">Hello World!</text>
</svg>
_x000D_
A duplicate text item is being placed, with stroke and stroke-width attributes. The stroke should match the background colour, and the stroke-width should be just big enough to create a "splodge" on which to write the actual text.
A bit of a hack and there are potential issues, but works for me!
public class DayFlipper extends ViewPager {
private Flipperadapter adapter;
public class FlipperAdapter extends PagerAdapter {
@Override
public int getCount() {
return DayFlipper.DAY_HISTORY;
}
@Override
public void startUpdate(View container) {
}
@Override
public Object instantiateItem(View container, int position) {
Log.d(TAG, "instantiateItem(): " + position);
Date d = DateHelper.getBot();
for (int i = 0; i < position; i++) {
d = DateHelper.getTomorrow(d);
}
d = DateHelper.normalize(d);
CubbiesView cv = new CubbiesView(mContext);
cv.setLifeDate(d);
((ViewPager) container).addView(cv, 0);
// add map
cv.setCubbieMap(mMap);
cv.initEntries(d);
adpter = FlipperAdapter.this;
return cv;
}
@Override
public void destroyItem(View container, int position, Object object) {
((ViewPager) container).removeView((CubbiesView) object);
}
@Override
public void finishUpdate(View container) {
}
@Override
public boolean isViewFromObject(View view, Object object) {
return view == ((CubbiesView) object);
}
@Override
public Parcelable saveState() {
return null;
}
@Override
public void restoreState(Parcelable state, ClassLoader loader) {
}
}
...
public void refresh() {
adapter().notifyDataSetChanged();
}
}
try this.
This works and I need to set the token only once in my app.js
:
axios.defaults.headers.common = {
'Authorization': 'Bearer ' + token
};
Then I can make requests in my components without setting the header again.
"axios": "^0.19.0",
Yes:
<script type="text/javascript">
var counter = 0;
</script>
and
<button onclick="counter++">Increment</button>
Encapsulation is used for 2 main reasons:
1.) Data hiding & protecting (the user of your class can't modify the data except through your provided methods).
2.) Combining the data and methods used to manipulate the data together into one entity (capsule). I think that the second reason is the answer your interviewer wanted to hear.
On the other hand, abstraction is needed to expose only the needed information to the user, and hiding unneeded details (for example, hiding the implementation of methods, so that the user is not affected if the implementation is changed).
Not gonna happen with CSS only
Inline javascript
<a href='index.html'
onmouseover='this.style.textDecoration="none"'
onmouseout='this.style.textDecoration="underline"'>
Click Me
</a>
In a working draft of the CSS2 spec it was declared that you could use pseudo-classes inline like this:
<a href="http://www.w3.org/Style/CSS"
style="{color: blue; background: white} /* a+=0 b+=0 c+=0 */
:visited {color: green} /* a+=0 b+=1 c+=0 */
:hover {background: yellow} /* a+=0 b+=1 c+=0 */
:visited:hover {color: purple} /* a+=0 b+=2 c+=0 */
">
</a>
but it was never implemented in the release of the spec as far as I know.
http://www.w3.org/TR/2002/WD-css-style-attr-20020515#pseudo-rules
A while ago I was in a similar situation (allthough I had a little WPF knowledge already), so I started a community wiki. There are a lot of great ressources there:
What applications could I study to understand (Data)Model-View-ViewModel?
Guava also has Base64 (among other encodings and incredibly useful stuff)
?library
and you will see:
library(package)
andrequire(package)
both load the package with namepackage
and put it on the search list.require
is designed for use inside other functions; it returnsFALSE
and gives a warning (rather than an error aslibrary()
does by default) if the package does not exist. Both functions check and update the list of currently loaded packages and do not reload a package which is already loaded. (If you want to reload such a package, calldetach(unload = TRUE)
orunloadNamespace
first.) If you want to load a package without putting it on the search list, userequireNamespace
.
You should create a StreamReader
around the stream, then call ReadToEnd
.
You should consider calling WebClient.DownloadString
instead.
if you're using the compiled bootstrap, one of the ways of fixing it is by editing the bootstrap.min.js before the line
$next[0].offsetWidth
force reflow Change to
if (typeof $next == 'object' && $next.length) $next[0].offsetWidth // force reflow
SELECT employee_id
FROM (
SELECT employee_id, ROW_NUMBER() OVER (ORDER BY employee_id) AS rn
FROM V_EMPLOYEE
) q
WHERE rn > 0
ORDER BY
Employee_ID
Note that this filter is redundant: ROW_NUMBER()
starts from 1
and is always greater than 0
.
If you're using lodash you can do something like
_.sum(_.values({ 'a': 1 , 'b': 2 , 'c':3 }))
You most likely had the files staged.
git add src/file/to/ignore
To undo the staged files,
git reset HEAD
This will unstage the files allowing for the following git command to execute successfully.
git update-index --assume-unchanged src/file/to/ignore
I had this problem and all I had to do is return true
from touchend and the warning went away.
I like to use np.vectorize
for such tasks. Consider the following:
>>> # Arrays
>>> x = np.array([5, 2, 3, 1, 4, 5])
>>> y = np.array(['f','o','o','b','a','r'])
>>> # Function containing the constraints
>>> func = np.vectorize(lambda t: t>1 and t<5)
>>> # Call function on x
>>> y[func(x)]
>>> array(['o', 'o', 'a'], dtype='<U1')
The advantage is you can add many more types of constraints in the vectorized function.
Hope it helps.
Simple run your project online i.e mvn clean install
. It fetches all the latest dependencies that you mention in your pom.xml and built the project
Grega's answer is great in explaining why the original code does not work and two ways to fix the issue. However, this solution is not very flexible; consider the case where your closure includes a method call on a non-Serializable
class that you have no control over. You can neither add the Serializable
tag to this class nor change the underlying implementation to change the method into a function.
Nilesh presents a great workaround for this, but the solution can be made both more concise and general:
def genMapper[A, B](f: A => B): A => B = {
val locker = com.twitter.chill.MeatLocker(f)
x => locker.get.apply(x)
}
This function-serializer can then be used to automatically wrap closures and method calls:
rdd map genMapper(someFunc)
This technique also has the benefit of not requiring the additional Shark dependencies in order to access KryoSerializationWrapper
, since Twitter's Chill is already pulled in by core Spark
If the XML is well formed then you can convert it to Document. By using the XPath you can get the XML Elements.
String xml = "<stackusers><name>Yash</name><age>30</age></stackusers>";
Form XML-String Create Document and find the elements using its XML-Path.
Document doc = getDocument(xml, true);
public static Document getDocument(String xmlData, boolean isXMLData) throws Exception {
DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
dbFactory.setNamespaceAware(true);
dbFactory.setIgnoringComments(true);
DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
Document doc;
if (isXMLData) {
InputSource ips = new org.xml.sax.InputSource(new StringReader(xmlData));
doc = dBuilder.parse(ips);
} else {
doc = dBuilder.parse( new File(xmlData) );
}
return doc;
}
Use
org.apache.xpath.XPathAPI
to get Node or NodeList.
System.out.println("XPathAPI:"+getNodeValue(doc, "/stackusers/age/text()"));
NodeList nodeList = getNodeList(doc, "/stackusers");
System.out.println("XPathAPI NodeList:"+ getXmlContentAsString(nodeList));
System.out.println("XPathAPI NodeList:"+ getXmlContentAsString(nodeList.item(0)));
public static String getNodeValue(Document doc, String xpathExpression) throws Exception {
Node node = org.apache.xpath.XPathAPI.selectSingleNode(doc, xpathExpression);
String nodeValue = node.getNodeValue();
return nodeValue;
}
public static NodeList getNodeList(Document doc, String xpathExpression) throws Exception {
NodeList result = org.apache.xpath.XPathAPI.selectNodeList(doc, xpathExpression);
return result;
}
Using
javax.xml.xpath.XPathFactory
System.out.println("javax.xml.xpath.XPathFactory:"+getXPathFactoryValue(doc, "/stackusers/age"));
static XPath xpath = javax.xml.xpath.XPathFactory.newInstance().newXPath();
public static String getXPathFactoryValue(Document doc, String xpathExpression) throws XPathExpressionException, TransformerException, IOException {
Node node = (Node) xpath.evaluate(xpathExpression, doc, XPathConstants.NODE);
String nodeStr = getXmlContentAsString(node);
return nodeStr;
}
Using Document Element.
System.out.println("DocumentElementText:"+getDocumentElementText(doc, "age"));
public static String getDocumentElementText(Document doc, String elementName) {
return doc.getElementsByTagName(elementName).item(0).getTextContent();
}
Get value in between two strings.
String nodeVlaue = org.apache.commons.lang.StringUtils.substringBetween(xml, "<age>", "</age>");
System.out.println("StringUtils.substringBetween():"+nodeVlaue);
Full Example:
public static void main(String[] args) throws Exception {
String xml = "<stackusers><name>Yash</name><age>30</age></stackusers>";
Document doc = getDocument(xml, true);
String nodeVlaue = org.apache.commons.lang.StringUtils.substringBetween(xml, "<age>", "</age>");
System.out.println("StringUtils.substringBetween():"+nodeVlaue);
System.out.println("DocumentElementText:"+getDocumentElementText(doc, "age"));
System.out.println("javax.xml.xpath.XPathFactory:"+getXPathFactoryValue(doc, "/stackusers/age"));
System.out.println("XPathAPI:"+getNodeValue(doc, "/stackusers/age/text()"));
NodeList nodeList = getNodeList(doc, "/stackusers");
System.out.println("XPathAPI NodeList:"+ getXmlContentAsString(nodeList));
System.out.println("XPathAPI NodeList:"+ getXmlContentAsString(nodeList.item(0)));
}
public static String getXmlContentAsString(Node node) throws TransformerException, IOException {
StringBuilder stringBuilder = new StringBuilder();
NodeList childNodes = node.getChildNodes();
int length = childNodes.getLength();
for (int i = 0; i < length; i++) {
stringBuilder.append( toString(childNodes.item(i), true) );
}
return stringBuilder.toString();
}
OutPut:
StringUtils.substringBetween():30
DocumentElementText:30
javax.xml.xpath.XPathFactory:30
XPathAPI:30
XPathAPI NodeList:<stackusers>
<name>Yash</name>
<age>30</age>
</stackusers>
XPathAPI NodeList:<name>Yash</name><age>30</age>
try {
} catch (javax.script.ScriptException ex) {
// System.out.println(ex.getMessage());
}
If your input file is in.txt, you can use freopen to set stdin file as in.txt
freopen("in.txt","r",stdin);
if you want to do the same with your output:
freopen("out.txt","w",stdout);
this will work for std::cin (if using c++), printf, etc...
This will also help you in debugging your code in clion, vscode
Performance-wise it's the same as a named method. The big problem is when you do the following:
MyButton.Click -= (o, i) =>
{
//snip
}
It will probably try to remove a different lambda, leaving the original one there. So the lesson is that it's fine unless you also want to be able to remove the handler.
Set Responsive and User friendly Background
<style>
body {
background: url(image.jpg);
background-size:100%;
background-repeat: no-repeat;
width: 100%;
}
</style>
This code will help you to make a result like FEB 17 20:49 .
String myTimestamp="2014/02/17 20:49";
SimpleDateFormat form = new SimpleDateFormat("yyyy/MM/dd HH:mm");
Date date = null;
Date time = null;
try
{
date = form.parse(myTimestamp);
time = new Date(myTimestamp);
SimpleDateFormat postFormater = new SimpleDateFormat("MMM dd");
SimpleDateFormat sdf = new SimpleDateFormat("HH:mm");
String newDateStr = postFormater.format(date).toUpperCase();
String newTimeStr = sdf.format(time);
System.out.println("Date : "+newDateStr);
System.out.println("Time : "+newTimeStr);
}
catch (Exception e)
{
e.printStackTrace();
}
Result :
Date : FEB 17
Time : 20:49
No, but you can use the DescriptionAttribute to accomplish what you're looking for.
Adding to @zzzzzzz answer, I ran the command:python3 -c "import sys; print(sys.path)"
and it provided me with different paths comparing to the same command with python
. The paths that were displayed with python3
were "python3 oriented".
See the output of the two different commands:
python -c "import sys; print(sys.path)"
['', '/usr/lib/python2.7', '/usr/lib/python2.7/plat-x86_64-linux-gnu', '/usr/lib/python2.7/lib-tk', '/usr/lib/python2.7/lib-old', '/usr/lib/python2.7/lib-dynload', '/usr/local/lib/python2.7/dist-packages', '/usr/local/lib/python2.7/dist-packages/setuptools-39.1.0-py2.7.egg', '/usr/lib/python2.7/dist-packages']
python3 -c "import sys; print(sys.path)"
['', '/usr/lib/python36.zip', '/usr/lib/python3.6', '/usr/lib/python3.6/lib-dynload', '/usr/local/lib/python3.6/dist-packages', '/usr/lib/python3/dist-packages']
Both commands were executed on my Ubuntu 18.04 machine.
Several GUI tools like Squirrel, SQL Workbench/J, AnySQL, ExecuteQuery can export to Excel files.
Most of those tools are listed in the PostgreSQL wiki:
http://wiki.postgresql.org/wiki/Community_Guide_to_PostgreSQL_GUI_Tools
I think you haven't messed up yet. Try:
git reset HEAD^
This will bring the dir to state before you've made the commit, HEAD^
means the parent of the current commit (the one you don't want anymore), while keeping changes from it (unstaged).
You can use the folowing to get the full path to your program like this:
Environment.CurrentDirectory
1) Go to teminal. open ~/.bashrc
. Add if not exists
if [ -f ~/.bash_aliases ]; then
. ~/.bash_aliases
fi
2) open ~/.bash_aliases
. If not exists: touch ~/.bash_aliases && open ~/.bash_aliases
3) To add new alias rather
- edit .bash_aliases
file and restart terminal or print source ~/.bash_aliases
- print echo "alias clr='clear'" >> ~/.bash_aliases && source ~/.bash_aliases
where your alias is alias clr='clear'
.
4) Add line source ~/.bash_aliases
to ~/.bash_profile
file. It needs to load aliases in each init of terminal.
Here is the example from the SocketServer documentation which would make an excellent starting point
import SocketServer
class MyTCPHandler(SocketServer.BaseRequestHandler):
"""
The RequestHandler class for our server.
It is instantiated once per connection to the server, and must
override the handle() method to implement communication to the
client.
"""
def handle(self):
# self.request is the TCP socket connected to the client
self.data = self.request.recv(1024).strip()
print "{} wrote:".format(self.client_address[0])
print self.data
# just send back the same data, but upper-cased
self.request.sendall(self.data.upper())
if __name__ == "__main__":
HOST, PORT = "localhost", 9999
# Create the server, binding to localhost on port 9999
server = SocketServer.TCPServer((HOST, PORT), MyTCPHandler)
# Activate the server; this will keep running until you
# interrupt the program with Ctrl-C
server.serve_forever()
Try it from a terminal like this
$ telnet localhost 9999
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
Hello
HELLOConnection closed by foreign host.
$ telnet localhost 9999
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
Sausage
SAUSAGEConnection closed by foreign host.
You'll probably need to use A Forking or Threading Mixin too
The .css()
function doesn't queue behind running animations, it's instantaneous.
To match the behaviour that you're after, you'd need to do the following:
$(document).ready(function() {
$("button").mouseover(function() {
var p = $("p#44.test").css("background-color", "yellow");
p.hide(1500).show(1500);
p.queue(function() {
p.css("background-color", "red");
});
});
});
The .queue()
function waits for running animations to run out and then fires whatever's in the supplied function.
My favorite way to do it is with git log
's -G
option (added in version 1.7.4).
-G<regex>
Look for differences whose added or removed line matches the given <regex>.
There is a subtle difference between the way the -G
and -S
options determine if a commit matches:
-S
option essentially counts the number of times your search matches in a file before and after a commit. The commit is shown in the log if the before and after counts are different. This will not, for example, show commits where a line matching your search was moved.-G
option, the commit is shown in the log if your search matches any line that was added, removed, or changed.Take this commit as an example:
diff --git a/test b/test
index dddc242..60a8ba6 100644
--- a/test
+++ b/test
@@ -1 +1 @@
-hello hello
+hello goodbye hello
Because the number of times "hello" appears in the file is the same before and after this commit, it will not match using -Shello
. However, since there was a change to a line matching hello
, the commit will be shown using -Ghello
.
I believe this might likely be that Chrome does not support localhost
to go through the Access-Control-Allow-Origin
-- see Chrome issue
To have Chrome send Access-Control-Allow-Origin
in the header, just alias your localhost in your /etc/hosts file to some other domain, like:
127.0.0.1 localhost yourdomain.com
Then if you'd access your script using yourdomain.com
instead of localhost
, the call should succeed.
You need to convert the column into a 'TemplateField'.
In Designer View, click the smart tag of the GridView, select-> 'Edit columns'. Select your column you wish to modify and press the hyperlink converting it to a template. See screenshot: Converting column to template.
Note: Modifying your datasource might regenerate the columns again, so it might make changes to your template columns.
Perhaps their problem is the moment when the search is made in the database. In his Fragment Override cycles of its Fragment.java to figure out just: try testing with the methods:
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_x, container, false); //Your query and ListView code probably will be here
Log.i("FragmentX", "Step OnCreateView");// Try with it
return rootView;
}
Try it similarly put Log.i
... "onStart" and "onResume".
Finally cut the code in "onCreate" e put it in "onStart" for example:
@Override
public void onStart(){
super.onStart();
Log.i("FragmentX","Step OnStart");
dbManager = new DBManager(getContext());
Cursor cursor = dbManager.getAllNames();
listView = (ListView)getView().findViewById(R.id.lvNames);
adapter = new CustomCursorAdapter(getContext(),cursor,0);// your adapter
adapter.notifyDataSetChanged();
listView.setAdapter(adapter);
}
Magic commands such as
%matplotlib qt
work in the iPython console and Notebook, but do not work within a script.
In that case, after importing:
from IPython import get_ipython
use:
get_ipython().run_line_magic('matplotlib', 'inline')
for inline plotting of the following code, and
get_ipython().run_line_magic('matplotlib', 'qt')
for plotting in an external window.
Edit: solution above does not always work, depending on your OS/Spyder version Anaconda issue on GitHub. Setting the Graphics Backend to Automatic (as indicated in another answer: Tools >> Preferences >> IPython console >> Graphics --> Automatic) solves the problem for me.
Then, after a Console restart, one can switch between Inline and External plot windows using the get_ipython() command, without having to restart the console.
You should use "merge a range of revision".
To merge changes from the trunk to a branch, inside the branch working copy choose "merge range of revisions" and enter the trunk URL and the start and end revisions to merge.
The same in the opposite way to merge a branch in the trunk.
About the --reintegrate flag, check the manual here: http://tortoisesvn.net/docs/release/TortoiseSVN_en/tsvn-dug-merge.html#tsvn-dug-merge-reintegrate
A nice way to do this is using Apache commons IOUtils
to copy the InputStream
into a StringWriter
... something like
StringWriter writer = new StringWriter();
IOUtils.copy(inputStream, writer, encoding);
String theString = writer.toString();
or even
// NB: does not close inputStream, you'll have to use try-with-resources for that
String theString = IOUtils.toString(inputStream, encoding);
Alternatively, you could use ByteArrayOutputStream
if you don't want to mix your Streams and Writers
Can't you implement your own timeout system?
Keep a sorted list, or better yet a priority heap as Heath suggests, of timeout events. In your select or poll calls use the timeout value from the top of the timeout list. When that timeout arrives, do that action attached to that timeout.
That action could be closing a socket that hasn't connected yet.
<a href="/index2.php?option=com_jumi&fileid=3&Itemid=11"
onclick="window.open(this.href,'targetWindow',
`toolbar=no,
location=no,
status=no,
menubar=no,
scrollbars=yes,
resizable=yes,
width=SomeSize,
height=SomeSize`);
return false;">Popup link</a>
Where width and height are pixels without units (width=400 not width=400px).
In most browsers it will not work if it is not written without line breaks, once the variables are setup have everything in one line:
<a href="/index2.php?option=com_jumi&fileid=3&Itemid=11" onclick="window.open(this.href,'targetWindow','toolbar=no,location=no,status=no,menubar=no,scrollbars=yes,resizable=yes,width=SomeSize,height=SomeSize'); return false;">Popup link</a>
Some things to watch out for:
I generally use /sbin/su to switch to the appropriate user before starting daemons.
So my question is: Is there a way to tell the compiler that a long long int is the also a int64_t, just like long int is?
This is a good question or problem, but I suspect the answer is NO.
Also, a long int
may not be a long long int
.
# if __WORDSIZE == 64 typedef long int int64_t; # else __extension__ typedef long long int int64_t; # endif
I believe this is libc. I suspect you want to go deeper.
In both 32-bit compile with GCC (and with 32- and 64-bit MSVC), the output of the program will be:
int: 0 int64_t: 1 long int: 0 long long int: 1
32-bit Linux uses the ILP32 data model. Integers, longs and pointers are 32-bit. The 64-bit type is a long long
.
Microsoft documents the ranges at Data Type Ranges. The say the long long
is equivalent to __int64
.
However, the program resulting from a 64-bit GCC compile will output:
int: 0 int64_t: 1 long int: 1 long long int: 0
64-bit Linux uses the LP64
data model. Longs are 64-bit and long long
are 64-bit. As with 32-bit, Microsoft documents the ranges at Data Type Ranges and long long is still __int64
.
There's a ILP64
data model where everything is 64-bit. You have to do some extra work to get a definition for your word32
type. Also see papers like 64-Bit Programming Models: Why LP64?
But this is horribly hackish and does not scale well (actual functions of substance, uint64_t, etc)...
Yeah, it gets even better. GCC mixes and matches declarations that are supposed to take 64 bit types, so its easy to get into trouble even though you follow a particular data model. For example, the following causes a compile error and tells you to use -fpermissive
:
#if __LP64__
typedef unsigned long word64;
#else
typedef unsigned long long word64;
#endif
// intel definition of rdrand64_step (http://software.intel.com/en-us/node/523864)
// extern int _rdrand64_step(unsigned __int64 *random_val);
// Try it:
word64 val;
int res = rdrand64_step(&val);
It results in:
error: invalid conversion from `word64* {aka long unsigned int*}' to `long long unsigned int*'
So, ignore LP64
and change it to:
typedef unsigned long long word64;
Then, wander over to a 64-bit ARM IoT gadget that defines LP64
and use NEON:
error: invalid conversion from `word64* {aka long long unsigned int*}' to `uint64_t*'
Below command for files.
scp `find . -maxdepth 1 -name "*.log" \! -name "hs_err_pid2801.log" -type f` root@IP:/tmp/test/
Below command for directory.
scp -r `find . -maxdepth 1 -name "lo*" \! -name "localhost" -type d` root@IP:/tmp/test/
you can customize above command as per your requirement.
u can check onCancelled() once then :
protected Object doInBackground(Object... x) {
while (/* condition */) {
if (isCancelled()) break;
}
return null;
}
this is a bit late.. but i have seen this problem occurs when you want to insert or delete one line from/to DB but u put/pull more than one line or more than one value ,
E.g:
you want to delete one line from DB with a specific value such as id of an item but you've queried a list of ids then you will encounter the same exception message.
regards.
You can't prevent the user from refreshing, nor should you really be trying. You should go back to why you need this solution, what's the root problem here?. Start there and find a different way to go about solving the problem. Perhaps is you elaborated on why you think you need to do this it would help in finding such a solution.
Breaking fundamental browser features is never a good idea, over 99.999999999% of the internet works and refreshes with F5, this is an expectation of the user, one you shouldn't break.
If you have an mp4 video residing at your server, and you want the visitors to stream that over your HTML page.
<video width="480" height="320" controls="controls">
<source src="http://serverIP_or_domain/location_of_video.mp4" type="video/mp4">
</video>
Your port 80 is being used by the system.
And from "Overview>>CPU" just Right click on that process and click "End Process Tree". If that process is system that might be a critical issue.
In Android 4
Go to Setting->Location services->
Uncheck Google`s location service.
Check GPS satelites.
For test you can use GPS Test.Please test Outdoor!
Offline maps are available on new version of Google map.
Maybe you install DRF is for python2, not for python3.
You can use python console
to check your module:
import rest_framework
Actually you use pip
to install module, it will install python2 module.
You should install the pip for python3:
sudo apt-get install python3-setuptools
sudo easy_install3 pip
So, you can install python3 module.
I had a similar issue, but mine was the presence of deleted image files in the drive.
I removed it, deleted .vs hidden folder, now it works
Let's solve that using recursion...
ArrayList<Integer> al = new ArrayList<>();
void intToArray(int num){
if( num != 0){
int temp = num %10;
num /= 10;
intToArray(num);
al.add(temp);
}
}
Explanation:
Suppose the value of num
is 12345.
During the first call of the function, temp
holds the value 5 and a value of num
= 1234. It is again passed to the function, and now temp
holds the value 4 and the value of num
is 123... This function calls itself till the value of num
is not equal to 0.
Stack trace:
temp - 5 | num - 1234
temp - 4 | num - 123
temp - 3 | num - 12
temp - 2 | num - 1
temp - 1 | num - 0
And then it calls the add method of ArrayList and the value of temp
is added to it, so the value of list is:
ArrayList - 1
ArrayList - 1,2
ArrayList - 1,2,3
ArrayList - 1,2,3,4
ArrayList - 1,2,3,4,5
After impelemtation of conversion to integer CONVERT(BIGINT, [timestamp]) as Timestamp I've got the result like
446701117 446701118 446701119 446701120 446701121 446701122 446701123 446701124 446701125 446701126
Yes, this is not a date and time, It's serial numbers
rmdir /s /q folder
powershell -Command "Remove-Item -LiteralPath 'folder' -Force -Recurse"
Note that in more cases del
and rmdir
wil leave you with leftover files, where Powershell manages to delete the files.
Also i have found another useful link. It is a background hack used like this
.selector { background-size: cover; -ms-behavior: url(/backgroundsize.min.htc); }
Within the AndroidManifest.xml file, add the following to the application
node:
tools:replace="android:appComponentFactory,android:icon,android:theme,android:label,android:name"
Off the top of my head, you might try using the "margin: 0 auto" for #outer rather than #inner.
I often add background-color to my DIVs to see how they're laying out on the view. That might be a good way to diagnose what's going onn here.
I just have a idea. Use the symbolic link to solve the error and you can still use your prefix for globally installed packages.
ln -s [your prefix path] [path in the '~/.nvm']
then you will have a symbolic folder in the ~/.nvm
folder, but in fact, your global packages are still installed in [your prefix path]. Then the error will not show again and you can use nvm use **
normally.
ps: it's worked for me on mac
.
pps: do not forget to set $PATH
to your npm bin
folder to use the globally installed packages.
The /EXCLUDE:
argument expects a file containing a list of excluded files.
So create a file called excludedfileslist.txt
containing:
.cs\
Then a command like this:
xcopy /r /d /i /s /y /exclude:excludedfileslist.txt C:\dev\apan C:\web\apan
Alternatively you could use Robocopy, but would require installing / copying a robocopy.exe
to the machines.
An anonymous comment edit which simply stated "This Solution exclude also css file!"
This is true creating a excludedfileslist.txt
file contain just:
.cs
(note no backslash on the end)
Will also exclude all of the following:
file1.cs
file2.css
dir1.cs\file3.txt
dir2\anyfile.cs.something.txt
Sometimes people don't read or understand the XCOPY command's help, here is an item I would like to highlight:
Using /exclude
- List each string in a separate line in each file. If any of the listed strings match any part of the absolute path of the file to be copied, that file is then excluded from the copying process. For example, if you specify the string "\Obj\", you exclude all files underneath the Obj directory. If you specify the string ".obj", you exclude all files with the .obj extension.
As the example states it excludes "all files with the .obj extension" but it doesn't state that it also excludes files or directories named file1.obj.tmp
or dir.obj.output\example2.txt
.
There is a way around .css
files being excluded also, change the excludedfileslist.txt
file to contain just:
.cs\
(note the backslash on the end).
Here is a complete test sequence for your reference:
C:\test1>ver
Microsoft Windows [Version 6.1.7601]
C:\test1>md src
C:\test1>md dst
C:\test1>md src\dir1
C:\test1>md src\dir2.cs
C:\test1>echo "file contents" > src\file1.cs
C:\test1>echo "file contents" > src\file2.css
C:\test1>echo "file contents" > src\dir1\file3.txt
C:\test1>echo "file contents" > src\dir1\file4.cs.txt
C:\test1>echo "file contents" > src\dir2.cs\file5.txt
C:\test1>xcopy /r /i /s /y .\src .\dst
.\src\file1.cs
.\src\file2.css
.\src\dir1\file3.txt
.\src\dir1\file4.cs.txt
.\src\dir2.cs\file5.txt
5 File(s) copied
C:\test1>echo .cs > excludedfileslist.txt
C:\test1>xcopy /r /i /s /y /exclude:excludedfileslist.txt .\src .\dst
.\src\dir1\file3.txt
1 File(s) copied
C:\test1>echo .cs\ > excludedfileslist.txt
C:\test1>xcopy /r /i /s /y /exclude:excludedfileslist.txt .\src .\dst
.\src\file2.css
.\src\dir1\file3.txt
.\src\dir1\file4.cs.txt
3 File(s) copied
This test was completed on a Windows 7 command line and retested on Windows 10 "10.0.14393".
Note that the last example does exclude .\src\dir2.cs\file5.txt
which may or may not be unexpected for you.
Simple use this to show the alert message box in code behind.
ScriptManager.RegisterStartupScript(this, this.GetType(), "script", "alert('Record Saved Sucessfully');", true);
Is this an application to which you have the code? Java 6u14 included a change to the way it handles jar security that for us caused very similar issues. If your jars are signed and work with Java 6u13 or below, you might consider either refactoring your code to work around this update or requiring Java 6u13 or below. Unfortunately I don't recall exactly what we did to resolve the issue - it was panic mode at the time.
Again, if you have the code you have tools to work with. You can put in System.out.println
statements in your startup routines - anything console output is displayed in the command window when you run the JNLP from the command line. Otherwise you might consider using a nice logger like log4j
to get a better idea of the point of failure.
You may also consider removing the application entirely and downloading it anew. Java Web Start has a Control Panel applet that allows you to see the URL your app is downloading from (could be the wrong one), uninstall the app, set security options, etc.
You can install npm through Node version manager or a Node installer. In the docs it states:
We do not recommend using a Node installer, since the Node installation process installs npm in a directory with local permissions and can cause permissions errors when you run npm packages globally.
NPM actually recommends using a Node Version Manager to avoid these errors.
Since you have the permission error, you probably installed npm through a Node installer and now you need to reinstalled it with a nvm (node version manager).
Luckily, this is very simple. You do not even need to remove your current version of npm or Node.js.
All you need to do is
Install nvm. For OSX or Linux Node use:
curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.37.2/install.sh | bash
This creates a nvm folder in your home directory.
Then
Install npm and node.js through nvm. To do so, just call
nvm install node
("node" is an alias for the latest version)
Now you can install your package globally without using sudo
or changing the owner of node_modules
in usr
folder.
I could do that following the steps:
axios.js
mock fileThe mock will happen automatically
Example of the mock module:
module.exports = {
get: jest.fn((url) => {
if (url === '/something') {
return Promise.resolve({
data: 'data'
});
}
}),
post: jest.fn((url) => {
if (url === '/something') {
return Promise.resolve({
data: 'data'
});
}
if (url === '/something2') {
return Promise.resolve({
data: 'data2'
});
}
}),
create: jest.fn(function () {
return this;
})
};
If you're like me, you can:
Keep your ssh keys organized
Keep your git clone commands simple
Handle any number of keys for any number of repositories.
Reduce your ssh key maintenance.
I keep my keys in my ~/.ssh/keys
directory.
I prefer convention over configuration.
I think code is law; the simpler it is, the better.
STEP 1 - Create Alias
Add this alias to your shell: alias git-clone='GIT_SSH=ssh_wrapper git clone'
STEP 2 - Create Script
Add this ssh_wrapper script to your PATH:
#!/bin/bash
# Filename: ssh_wrapper
if [ -z ${SSH_KEY} ]; then
SSH_KEY='github.com/l3x' # <= Default key
fi
SSH_KEY="~/.ssh/keys/${SSH_KEY}/id_rsa"
ssh -i "${SSH_KEY}" "$@"
EXAMPLES
Use github.com/l3x key:
KEY=github.com/l3x git-clone https://github.com/l3x/learn-fp-go
The following example also uses the github.com/l3x key (by default):
git-clone https://github.com/l3x/learn-fp-go
Use bitbucket.org/lsheehan key:
KEY=bitbucket.org/lsheehan git-clone [email protected]:dave_andersen/exchange.git
NOTES
Change the default SSH_KEY in the ssh_wrapper script to what you use most of the time. That way, you don't need to use the KEY variable most of the time.
You may think, "Hey! That's a lot going on with an alias, a script and some directory of keys," but for me it's convention. Nearly all my workstations (and servers for that matter) are configured similarly.
My goal here is to simplify the commands that I execute regularly.
My conventions, e.g., Bash scripts, aliases, etc., create a consistent environment and helps me keep things simple.
KISS and names matter.
For more design tips check out Chapter 4 SOLID Design in Go from my book: https://www.amazon.com/Learning-Functional-Programming-Lex-Sheehan-ebook/dp/B0725B8MYW
Hope that helps. - Lex
If the API says to use HTTP Basic authentication, then you need to add an Authorization header to your request. I'd alter your code to look like this:
WebRequest req = WebRequest.Create(@"https://sub.domain.com/api/operations?param=value¶m2=value");
req.Method = "GET";
req.Headers["Authorization"] = "Basic " + Convert.ToBase64String(Encoding.Default.GetBytes("username:password"));
//req.Credentials = new NetworkCredential("username", "password");
HttpWebResponse resp = req.GetResponse() as HttpWebResponse;
Replacing "username"
and "password"
with the correct values, of course.
STL is a heavily optimized library. In fact, it's even suggested to use STL in games where high performance might be needed. Arrays are too error prone to be used in day to day tasks. Today's compilers are also very smart and can really produce excellent code with STL. If you know what you are doing, STL can usually provide the necessary performance. For example by initializing vectors to required size (if you know from start), you can basically achieve the array performance. However, there might be cases where you still need arrays. When interfacing with low level code (i.e. assembly) or old libraries that require arrays, you might not be able to use vectors.
Though this answer is unlikely to be seen, I think the following clarification is worth making:
A BIT OF DETAIL
the display width is, apparently, intended to provide some metadata about how many zeros to display in a zero filled number.
It does NOT actually limit the length of a number returned from a query if that number goes above the display width specified.
To know what length/width is actually allowed for an integer data type in MySQL see the list & link: (types: TINYINT, SMALLINT, MEDIUMINT, INT, BIGINT);
So having said the above, you can expect the display width to have no affect on the results from a standard query, unless the columns are specified as ZEROFILL columns
OR
in the case the data is being pulled into an application & that application is collecting the display width to use for some other sort of padding.
Primary Reference: https://blogs.oracle.com/jsmyth/entry/what_does_the_11_mean
MySQL’s utf-8 types are not actually proper utf-8 – it only uses up to three bytes per character and supports only the Basic Multilingual Plane (i.e. no Emoji, no astral plane, etc.).
If you need to store values from higher Unicode planes, you need the utf8mb4 encodings.
When I run
git branch
, it only shows*master
, not the remaining two branches.
git branch
doesn't list test_branch
, because no such local branch exist in your local repo, yet. When cloning a repo, only one local branch (master
, here) is created and checked out in the resulting clone, irrespective of the number of branches that exist in the remote repo that you cloned from. At this stage, test_branch
only exist in your repo as a remote-tracking branch, not as a local branch.
And when I run
git checkout test-branch
I get the following error [...]
You must be using an "old" version of Git. In more recent versions (from v1.7.0-rc0 onwards),
If
<branch>
is not found but there does exist a tracking branch in exactly one remote (call it<remote>
) with a matching name, treat [git checkout <branch>
] as equivalent to$ git checkout -b <branch> --track <remote>/<branch>
Simply run
git checkout -b test_branch --track origin/test_branch
instead. Or update to a more recent version of Git.
JS provides an easy solution by using the event properties:
$('selector').click(function(event) {
if(!event.detail || event.detail == 1){//activate on first click only to avoid hiding again on multiple clicks
// code here. // It will execute only once on multiple clicks
}
});
The ideal way is not to use ioutil.ReadAll
, but rather use a decoder on the reader directly. Here's a nice function that gets a url and decodes its response onto a target
structure.
var myClient = &http.Client{Timeout: 10 * time.Second}
func getJson(url string, target interface{}) error {
r, err := myClient.Get(url)
if err != nil {
return err
}
defer r.Body.Close()
return json.NewDecoder(r.Body).Decode(target)
}
Example use:
type Foo struct {
Bar string
}
func main() {
foo1 := new(Foo) // or &Foo{}
getJson("http://example.com", foo1)
println(foo1.Bar)
// alternately:
foo2 := Foo{}
getJson("http://example.com", &foo2)
println(foo2.Bar)
}
You should not be using the default *http.Client
structure in production as this answer originally demonstrated! (Which is what http.Get
/etc call to). The reason is that the default client has no timeout set; if the remote server is unresponsive, you're going to have a bad day.
Not quite an answer (not “using Developer Tools”), but there is a third-party tool for it: IECookiesView from NirSoft. Hope this helps someone.
image taken from Softpedia
if you just want to stopping insecure warning like:
/usr/lib/python3/dist-packages/urllib3/connectionpool.py:794: InsecureRequestWarning: Unverified HTTPS request is being made. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.org/en/latest/security.html InsecureRequestWarning)
do:
requests.METHOD("https://www.google.com", verify=False)
verify=False
is the key, followings are not good at it:
requests.packages.urllib3.disable_warnings()
or
urllib3.disable_warnings()
but, you HAVE TO know, that might cause potential security risks.
You need to pass an array of element to jsx
. The problem is that forEach
does not return anything (i.e it returns undefined
). So it's better to use map
because map
returns an array:
class QuestionSet extends Component {
render(){
<div className="container">
<h1>{this.props.question.text}</h1>
{this.props.question.answers.map((answer, i) => {
console.log("Entered");
// Return the element. Also pass key
return (<Answer key={answer} answer={answer} />)
})}
}
export default QuestionSet;
this best way to do that.
public static String formatCurrency(String amount) {
DecimalFormat formatter = new DecimalFormat("###,###,##0.00");
return formatter.format(Double.parseDouble(amount));
}
100 -> "100.00"
100.1 -> "100.10"
The plugin's author says you should use "square brackets without the quotes", []
http://bassistance.de/2011/10/07/release-validation-plugin-1-9-0/
Release: Validation Plugin 1.9.0: "...Another change should make the setup of forms with hidden elements easier, these are now ignored by default (option “ignore” has “:hidden” now as default). In theory, this could break an existing setup. In the unlikely case that it actually does, you can fix it by setting the ignore-option to “[]” (square brackets without the quotes)."
To change this setting for all forms:
$.validator.setDefaults({
ignore: [],
// any other default options and/or rules
});
(It is not required that .setDefaults()
be within the document.ready
function)
OR for one specific form:
$(document).ready(function() {
$('#myform').validate({
ignore: [],
// any other options and/or rules
});
});
EDIT:
See this answer for how to enable validation on some hidden fields but still ignore others.
EDIT 2:
Before leaving comments that "this does not work", keep in mind that the OP is simply asking about the jQuery Validate plugin and his question has nothing to do with how ASP.NET, MVC, or any other Microsoft framework can alter this plugin's normal expected behavior. If you're using a Microsoft framework, the default functioning of the jQuery Validate plugin is over-written by Microsoft's unobtrusive-validation
plugin.
If you're struggling with the unobtrusive-validation
plugin, then please refer to this answer instead: https://stackoverflow.com/a/11053251/594235
IsEmpty()
would be the quickest way to check for that.
IsNull()
would seem like a similar solution, but keep in mind Null has to be assigned to the cell; it's not inherently created in the cell.
Also, you can check the cell by:
count()
counta()
Len(range("BCell").Value) = 0
easiest way is:
first_key = my_dict.keys()[0]
but some times you should be more careful and assure that your entity is a valuable list so:
first_key = list(my_dict.keys())[0]
If you want to retrieve POST data:
first_name = request.form.get("firstname")
If you want to retrieve GET (query string) data:
first_name = request.args.get("firstname")
Or if you don't care/know whether the value is in the query string or in the post data:
first_name = request.values.get("firstname")
request.values is a CombinedMultiDict that combines Dicts from request.form and request.args.
if you are just getting a single value out of either (not in a loop) then both do bounds checking (you're in managed code remember) it's just the list does it twice. See the notes later for why this is likely not a big deal.
If you are using your own for(int int i = 0; i < x.[Length/Count];i++) then the key difference is as follows:
If you are using foreach then the key difference is as follows:
The bounds checking is often no big deal (especially if you are on a cpu with a deep pipeline and branch prediction - the norm for most these days) but only your own profiling can tell you if that is an issue. If you are in parts of your code where you are avoiding heap allocations (good examples are libraries or in hashcode implementations) then ensuring the variable is typed as List not IList will avoid that pitfall. As always profile if it matters.
Cross browser way of doing this is
var top = ($(window).scrollTop() || $("body").scrollTop());
Use the @RequestParam to pass a parameter to the controller handler method.
In the jsp your form should have an input field with name = "id"
like the following:
<input type="text" name="id" />
<input type="submit" />
Then in your controller, your handler method should be like the following:
@RequestMapping("listNotes")
public String listNotes(@RequestParam("id") int id) {
Person person = personService.getCurrentlyAuthenticatedUser();
model.addAttribute("person", new Person());
model.addAttribute("listPersons", this.personService.listPersons());
model.addAttribute("listNotes", this.notesService.listNotesBySectionId(id, person));
return "note";
}
Please also refer to these answers and tutorial:
A more explicit option is to project collection to an IEnumerable of KeyValuePair
and then convert it to a Dictionary.
Dictionary<int, string> dictionary = objects
.Select(x=> new KeyValuePair<int, string>(x.Id, x.Name))
.ToDictionary(x=>x.Key, x=>x.Value);
A simple program shows how to use for loop to find sum of serveral integers.
#include <iostream>
using namespace std;
int main ()
{
int sum = 0;
int endnum = 2;
for(int i = 0; i<=endnum; i++){
sum += i;
}
cout<<sum;
}
Another approach using the new Swift 2 syntax is to use guard and nest it all in one conditional.
guard let touch = object.AnyObject() as? UITouch, let picker = touch.view as? UIPickerView else {
return //Do Nothing
}
//Do something with picker
HTML5 is supported on both Google (android) phones such as Galaxy S, and iPhone. iPhone however doesn't support Flash, which Google phones do support.
I was able to make parent window disable. However making the pop-up always keep raised didn't work. Below code works even for frame tags. Just add id and class property to frame tag and it works well there too.
In parent window use:
<head>
<style>
.disableWin{
pointer-events: none;
}
</style>
<script type="text/javascript">
function openPopUp(url) {
disableParentWin();
var win = window.open(url);
win.focus();
checkPopUpClosed(win);
}
/*Function to detect pop up is closed and take action to enable parent window*/
function checkPopUpClosed(win) {
var timer = setInterval(function() {
if(win.closed) {
clearInterval(timer);
enableParentWin();
}
}, 1000);
}
/*Function to enable parent window*/
function enableParentWin() {
window.document.getElementById('mainDiv').class="";
}
/*Function to enable parent window*/
function disableParentWin() {
window.document.getElementById('mainDiv').class="disableWin";
}
</script>
</head>
<body>
<div id="mainDiv class="">
</div>
</body>
Try the following:
create these folders under storage/framework:
sessions
views
cache
Now it should work
thank-you Ignacio Vazquez-Abrams
i adapted slightly for better ease of use :)
placed at top of script
NEW_LINE=$'\n'
then to use easily with other variables
variable1="test1"
variable2="test2"
DESCRIPTION="$variable1$NEW_LINE$variable2$NEW_LINE"
OR to append thank-you William Pursell
DESCRIPTION="$variable1$NEW_LINE"
DESCRIPTION+="$variable2$NEW_LINE"
echo "$DESCRIPTION"
Use NetworkCredential
Yep, just add these two lines to your code.
var credentials = new System.Net.NetworkCredential("username", "password");
client.Credentials = credentials;
If you're storing the object as type object
, you need to use reflection. This is true of any object type, anonymous or otherwise. On an object o, you can get its type:
Type t = o.GetType();
Then from that you look up a property:
PropertyInfo p = t.GetProperty("Foo");
Then from that you can get a value:
object v = p.GetValue(o, null);
This answer is long overdue for an update for C# 4:
dynamic d = o;
object v = d.Foo;
And now another alternative in C# 6:
object v = o?.GetType().GetProperty("Foo")?.GetValue(o, null);
Note that by using ?.
we cause the resulting v
to be null
in three different situations!
o
is null
, so there is no object at allo
is non-null
but doesn't have a property Foo
o
has a property Foo
but its real value happens to be null
.So this is not equivalent to the earlier examples, but may make sense if you want to treat all three cases the same.
I had the same problem, This is what I did: I have a SPA with multiple views in the same page (without ajax), so this is the code of the module:
var app = angular.module('otisApp', ['chieffancypants.loadingBar', 'ngRoute']);
app.config(['$routeProvider', function($routeProvider){
$routeProvider.when('/:page', {
templateUrl: function(page){return page.page + '.html';},
controller:'otisCtrl'
})
.otherwise({redirectTo:'/otis'});
}]);
I have only one controller for all views, but, the problem is the same as the question, the controller always refresh data, in order to avoid this behavior I did what people suggest above and I created a service for that purpose, then pass it to the controller as follows:
app.factory('otisService', function($http){
var service = {
answers:[],
...
}
return service;
});
app.controller('otisCtrl', ['$scope', '$window', 'otisService', '$routeParams',
function($scope, $window, otisService, $routeParams){
$scope.message = "Hello from page: " + $routeParams.page;
$scope.update = function(answer){
otisService.answers.push(answers);
};
...
}]);
Now I can call the update function from any of my views, pass values and update my model, I haven't no needed to use html5 apis for persistence data (this is in my case, maybe in other cases would be necessary to use html5 apis like localstorage and other stuff).
Try this, I do not know if there is any phone number longer than 12:
^(00|\+){1}\d{12}$
Java code for start service:
Start service from Activity:
startService(new Intent(MyActivity.this, MyService.class));
Start service from Fragment:
getActivity().startService(new Intent(getActivity(), MyService.class));
MyService.java:
import android.app.Service;
import android.content.Intent;
import android.os.Handler;
import android.os.IBinder;
import android.util.Log;
public class MyService extends Service {
private static String TAG = "MyService";
private Handler handler;
private Runnable runnable;
private final int runTime = 5000;
@Override
public void onCreate() {
super.onCreate();
Log.i(TAG, "onCreate");
handler = new Handler();
runnable = new Runnable() {
@Override
public void run() {
handler.postDelayed(runnable, runTime);
}
};
handler.post(runnable);
}
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public void onDestroy() {
if (handler != null) {
handler.removeCallbacks(runnable);
}
super.onDestroy();
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
return START_STICKY;
}
@SuppressWarnings("deprecation")
@Override
public void onStart(Intent intent, int startId) {
super.onStart(intent, startId);
Log.i(TAG, "onStart");
}
}
Define this Service into Project's Manifest File:
Add below tag in Manifest file:
<service android:enabled="true" android:name="com.my.packagename.MyService" />
Done
Colors are bit-encoded. If You want to change the Text color in C++ language There are many ways. In the console, you can change the properties of output.click this icon of the console and go to properties and change color.
The second way is calling the system colors.
#include <iostream>
#include <stdlib.h>
using namespace std;
int main()
{
//Changing Font Colors of the System
system("Color 7C");
cout << "\t\t\t ****CEB Electricity Bill Calculator****\t\t\t " << endl;
cout << "\t\t\t *** MENU ***\t\t\t " <<endl;
return 0;
}
Use the following to work in all browsers:
var readOnlyAttr = $('.textBoxClass').attr('readonly');
if (typeof readOnlyAttr !== 'undefined' && readOnlyAttr !== false) {
$('.textBoxClass').addClass('locked');
}
more.exe
exists on Windows, ports of less
are easily found (and the PowerShell Community Extensions, PSCX, includes one).
PowerShell doesn't really provide any alternative to separate programs for either, but for structured data Out-Grid
can be helpful.
Head
and Tail
can both be emulated with Select-Object
using the -First
and -Last
parameters respectively.
Sed
functions are all available but structured rather differently. The filtering options are available in Where-Object
(or via Foreach-Object
and some state for ranges). Other, transforming, operations can be done with Select-Object
and Foreach-Object
.
However as PowerShell passes (.NET) objects – with all their typed structure, eg. dates remain DateTime
instances – rather than just strings, which each command needs to parse itself, much of sed
and other such programs are redundant.
The cleanest way for you to accomplish this is to use the enumitem package (https://ctan.org/pkg/enumitem). For example,
\documentclass{article}
\usepackage{enumitem}% http://ctan.org/pkg/enumitem
\begin{document}
\noindent Here is some text and I want to make sure
there is no spacing the different items.
\begin{itemize}[noitemsep]
\item Item 1
\item Item 2
\item Item 3
\end{itemize}
\noindent Here is some text and I want to make sure
there is no spacing between this line and the item
list below it.
\begin{itemize}[noitemsep,topsep=0pt]
\item Item 1
\item Item 2
\item Item 3
\end{itemize}
\end{document}
Furthermore, if you want to use this setting globally across lists, you can use
\usepackage{enumitem}% http://ctan.org/pkg/enumitem
\setlist[itemize]{noitemsep, topsep=0pt}
However, note that this package does not work well with the beamer package which is used to make presentations in Latex.
This Error hit me after installing RVM correctly. Solution: re-boot Terminal.
Reference RailsCast's RVM Install tutorial.
Yeah that's it without no further issues, to avoid raw string json this is it.
public ActionResult GetJson()
{
var json = System.IO.File.ReadAllText(
Server.MapPath(@"~/App_Data/content.json"));
return new ContentResult
{
Content = json,
ContentType = "application/json",
ContentEncoding = Encoding.UTF8
};
}
NOTE: please note that method return type of JsonResult
is not working for me, since JsonResult
and ContentResult
both inherit ActionResult
but there is no relationship between them.
If the source is an xml file, say like this sample
<pa:Process xmlns:pa="http://sssss">
<pa:firsttag>SAMPLE</pa:firsttag>
</pa:Process>
you may try the following code
from lxml import etree, objectify
metadata = 'C:\\Users\\PROCS.xml' # this is sample xml file the contents are shown above
parser = etree.XMLParser(remove_blank_text=True) # this line removes the name space from the xml in this sample the name space is --> http://sssss
tree = etree.parse(metadata, parser) # this line parses the xml file which is PROCS.xml
root = tree.getroot() # we get the root of xml which is process and iterate using a for loop
for elem in root.getiterator():
if not hasattr(elem.tag, 'find'): continue # (1)
i = elem.tag.find('}')
if i >= 0:
elem.tag = elem.tag[i+1:]
dict={} # a python dictionary is declared
for elem in tree.iter(): #iterating through the xml tree using a for loop
if elem.tag =="firsttag": # if the tag name matches the name that is equated then the text in the tag is stored into the dictionary
dict["FIRST_TAG"]=str(elem.text)
print(dict)
Output would be
{'FIRST_TAG': 'SAMPLE'}
If you want to bypass the use of a temporary file you may be able to use process substitution. I haven't quite gotten it to work yet. This was my first attempt:
$ .useless.sh 2> >( ERROR=$(<) )
-bash: command substitution: line 42: syntax error near unexpected token `)'
-bash: command substitution: line 42: `<)'
Then I tried
$ ./useless.sh 2> >( ERROR=$( cat <() ) )
This Is Output
$ echo $ERROR # $ERROR is empty
However
$ ./useless.sh 2> >( cat <() > asdf.txt )
This Is Output
$ cat asdf.txt
This Is Error
So the process substitution is doing generally the right thing... unfortunately, whenever I wrap STDIN inside >( )
with something in $()
in an attempt to capture that to a variable, I lose the contents of $()
. I think that this is because $()
launches a sub process which no longer has access to the file descriptor in /dev/fd which is owned by the parent process.
Process substitution has bought me the ability to work with a data stream which is no longer in STDERR, unfortunately I don't seem to be able to manipulate it the way that I want.
At Back-end part
Rest service in Controller will have mixed @RequestPart and MultipartFile to serve such Multipart + JSON request.
@RequestMapping(value = "/executesampleservice", method = RequestMethod.POST,
consumes = {"multipart/form-data"})
@ResponseBody
public boolean yourEndpointMethod(
@RequestPart("properties") @Valid ConnectionProperties properties,
@RequestPart("file") @Valid @NotNull @NotBlank MultipartFile file) {
return projectService.executeSampleService(properties, file);
}
At front-end :
formData = new FormData();
formData.append("file", document.forms[formName].file.files[0]);
formData.append('properties', new Blob([JSON.stringify({
"name": "root",
"password": "root"
})], {
type: "application/json"
}));
See in the image (POSTMAN request):
Click to view Postman request in form data for both file and json
I wanted to add something new because of the following:
At a first attemp I failed to beat
std::ostringstream
's operator<<
efficiency, but with more attemps I was able to make a StringBuilder that is faster in some cases.
Everytime I append a string I just store a reference to it somewhere and increase the counter of the total size.
The real way I finally implemented it (Horror!) is to use a opaque buffer(std::vector < char > ):
for byte [ ]
for moved strings (strings appended with std::move
)
std::string
object (we have ownership)for strings
std::string
object (no ownership)There's also one small optimization, if last inserted string was mov'd in, it checks for free reserved but unused bytes and store further bytes in there instead of using the opaque buffer (this is to save some memory, it actually make it slightly slower, maybe depend also on the CPU, and it is rare to see strings with extra reserved space anyway)
This was finally slightly faster than std::ostringstream
but it has few downsides:
ostringstream
conclusion? use
std::ostringstream
It already fix the biggest bottleneck while ganing few % points in speed with mine implementation is not worth the downsides.
Try this
Scanner scanner = new Scanner(System.in);
int amountOfPlayers;
do {
System.out.print("Select the amount of players (1/2): ");
while (!scanner.hasNextInt()) {
System.out.println("That's not a number!");
scanner.next(); // this is important!
}
amountOfPlayers = scanner.nextInt();
} while ((amountOfPlayers <= 0) || (amountOfPlayers > 2));
if(scanner != null) {
scanner.close();
}
System.out.println("You've selected " + amountOfPlayers+" player(s).");
Check if element is visible in viewport using jquery:
First determine the top and bottom positions of the element. Then determine the position of the viewport's bottom (relative to the top of your page) by adding the scroll position to the viewport height.
If the bottom position of the viewport is greater than the element's top position AND the top position of the viewport is less than the element's bottom position, the element is in the viewport (at least partially). In simpler terms, when any part of the element is between the top and bottom bounds of your viewport, the element is visible on your screen.
Now you can write an if/else statement, where the if statement only runs when the above condition is met.
The code below executes what was explained above:
// this function runs every time you are scrolling
$(window).scroll(function() {
var top_of_element = $("#element").offset().top;
var bottom_of_element = $("#element").offset().top + $("#element").outerHeight();
var bottom_of_screen = $(window).scrollTop() + $(window).innerHeight();
var top_of_screen = $(window).scrollTop();
if ((bottom_of_screen > top_of_element) && (top_of_screen < bottom_of_element)){
// the element is visible, do something
} else {
// the element is not visible, do something else
}
});
This answer is a summary of what Chris Bier and Andy were discussing below. I hope it helps anyone else who comes across this question while doing research like I did. I also used an answer to the following question to formulate my answer: Show Div when scroll position.
var newTH = document.createElement('th');
newTH.onclick = function() {
//Your code here
}
Here's a detailed explanation about the calculation of MaxClients and MaxRequestsPerChild
ServerLimit 16
StartServers 2
MaxClients 200
MinSpareThreads 25
MaxSpareThreads 75
ThreadsPerChild 25
First of all, whenever an apache is started, it will start 2 child processes which is determined by StartServers
parameter. Then each process will start 25 threads determined by ThreadsPerChild
parameter so this means 2 process can service only 50 concurrent connections/clients i.e. 25x2=50. Now if more concurrent users comes, then another child process will start, that can service another 25 users. But how many child processes can be started is controlled by ServerLimit
parameter, this means that in the configuration above, I can have 16 child processes in total, with each child process can handle 25 thread, in total handling 16x25=400 concurrent users. But if number defined in MaxClients
is less which is 200 here, then this means that after 8 child processes, no extra process will start since we have defined an upper cap of MaxClients
. This also means that if I set MaxClients
to 1000, after 16 child processes and 400 connections, no extra process will start and we cannot service more than 400 concurrent clients even if we have increase the MaxClient
parameter. In this case, we need to also increase ServerLimit
to 1000/25 i.e. MaxClients/ThreadsPerChild=40
So this is the optmized configuration to server 1000 clients
<IfModule mpm_worker_module>
ServerLimit 40
StartServers 2
MaxClients 1000
MinSpareThreads 25
MaxSpareThreads 75
ThreadsPerChild 25
MaxRequestsPerChild 0
</IfModule>
Call visudo
and add this:
user1 ALL=(user2) NOPASSWD: /home/user2/bin/test.sh
The command paths must be absolute! Then call sudo -u user2 /home/user2/bin/test.sh
from a user1
shell. Done.
The expression len(l)
is evaluated only one time, at the moment the range()
builtin is evaluated. The range object constructed at that time does not change; it can't possibly know anything about the object l
.
P.S. l
is a lousy name for a value! It looks like the numeral 1, or the capital letter I.
var classList = $(element).attr('class').split(/\s+/);
$(classList).each(function(index){
//do something
});
In HTML5 there is no scrolling attribute because "its function is better handled by CSS" see http://www.w3.org/TR/html5-diff/ for other changes. Well and the CSS solution:
CSS solution:
HTML4's scrolling="no"
is kind of an alias of the CSS's overflow: hidden
, to do so it is important to set size attributes width/height:
iframe.noScrolling{
width: 250px; /*or any other size*/
height: 300px; /*or any other size*/
overflow: hidden;
}
Add this class to your iframe and you're done:
<iframe src="http://www.example.com/" class="noScrolling"></iframe>
! IMPORTANT NOTE ! : overflow: hidden
for <iframe>
is not fully supported by all modern browsers yet(even chrome doesn't support it yet) so for now (2013) it's still better to use Transitional version and use scrolling="no"
and overflow:hidden
at the same time :)
UPDATE 2020: the above is still true, oveflow for iframes is still not supported by all majors
This will not work in your situation. You can only specify the constraint that it has an empty constructor:
public static string GetAllItems<T>(...) where T: new()
What you could do is use property injection by defining this interface:
public interface ITakesAListItem
{
ListItem Item { set; }
}
Then you could alter your method to be this:
public static string GetAllItems<T>(...) where T : ITakesAListItem, new()
{
...
List<T> tabListItems = new List<T>();
foreach (ListItem listItem in listCollection)
{
tabListItems.Add(new T() { Item = listItem });
}
...
}
The other alternative is the Func
method described by JaredPar.
Update December 2012 (19 months later):
The blog post "Jin Mingjian: Eclipse Darker Theme" mentions this GitHub repo "eclipse themes - darker":
The big fun is that, the codes are minimized by using Eclipse4 platform technologies like dependency injection.
It proves that again, the concise codes and advanced features could be achieved by contributing or extending with the external form (like library, framework).
New language is not necessary just for this kind of purpose.
Update July 2012 (14 months later):
With the latest Eclipse4.2 (June 2012, "Juno") release, you can implement what I originally described below: a CSS-based fully dark theme for Eclipse.
See the article by Lars Vogel in "Eclipse 4 is beautiful – Create your own Eclipse 4 theme":
If you want to play with it, you only need to write a plug-in, create a CSS file and use the
org.eclipse.e4.ui.css.swt.theme
extension point to point to your file.
If you export your plug-in, place it in the “dropins” folder of your Eclipse installation and your styling is available.
Original answer: August 2011
With Eclipse 3.x, theme is only for the editors, as you can see in the site "Eclipse Color Themes".
Anything around that is managed by windows system colors.
That is what you need to change to have any influence on Eclipse global colors around editors.
Eclipse 4 will provide much advance theme options: See "Eclipse 4.0 – So you can theme me Part 1" and "Eclipse 4.0 RCP: Dynamic CSS Theme Switching".
<div class="row" *ngIf="teamMembers?.length > 0">
This checks first if teamMembers
has a value and if teamMembers
doesn't have a value, it doesn't try to access length
of undefined
because the first part of the condition already fails.
you can use md5 for that purpose,very short
$color = substr(md5(rand()), 0, 6);
As for Primary Key, whatever physically makes a row unique should be determined as the primary key.
For a reference as a foreign key, using an auto incrementing integer as a surrogate is a nice idea for two main reasons.
- First, there's less overhead incurred in the join usually.
- Second, if you need to update the table that contains the unique varchar then the update has to cascade down to all the child tables and update all of them as well as the indexes, whereas with the int surrogate, it only has to update the master table and it's indexes.
The drawaback to using the surrogate is that you could possibly allow changing of the meaning of the surrogate:
ex.
id value
1 A
2 B
3 C
Update 3 to D
id value
1 A
2 B
3 D
Update 2 to C
id value
1 A
2 C
3 D
Update 3 to B
id value
1 A
2 C
3 B
It all depends on what you really need to worry about in your structure and what means most.
Not sure if this is the most efficient way, but:
>>> ''.join(c for c in "abc123def456" if c.isdigit())
'123456'
The ''.join
part means to combine all the resulting characters together without any characters in between. Then the rest of it is a list comprehension, where (as you can probably guess) we only take the parts of the string that match the condition isdigit
.
Try adding a reference to the missing dll's from your service/web project directly. Adding the references to a different project didn't work for me.
I only had to do this when publishing my web app because it wasn't copying all the required dll's.
This happened to my because accidentally erase the " @IBAction func... " inside my UIViewcontroller class code, so in the Storyboard was created the Reference Outlet, but at runtime there was any function to process it.
The solution was to delete the Outlet reference inside the property inspector and then recreate it dragging with command key to the class code.
Hope it helps!
[Update April 2016] This answer is now outdated, custom naked domain mapping is supported, see Lawrence Mok's answer.
I have figured it out!
First off: it is impossible to link something like mydomain.com
with your appspot app. This is considered a naked domain, which is not supported by Google App Engine (anymore). Strictly speaking, the answer to my question has to be "impossible". Read on...
All you can do is add subdomains pointing to your app, e.g myappid.mydomain.com
. The key to get your top level domain linked to your app is to realize that www
is a subdomain like any other!
myappid.mydomain.com
is treated exactly the same as www.mydomain.com
!
Here are the steps:
www
and click Addwww
for your domain and point to ghs.googlehosted.com
Now you have www.mydomain.com
linked to your app.
I wished this would have been more obvious in the documentation...Good luck!
You need something along the lines of this:
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
Document doc = builder.parse(<uri_as_string>);
XPathFactory xPathfactory = XPathFactory.newInstance();
XPath xpath = xPathfactory.newXPath();
XPathExpression expr = xpath.compile(<xpath_expression>);
Then you call expr.evaluate()
passing in the document defined in that code and the return type you are expecting, and cast the result to the object type of the result.
If you need help with a specific XPath expressions, you should probably ask it as separate questions (unless that was your question in the first place here - I understood your question to be how to use the API in Java).
Edit: (Response to comment): This XPath expression will get you the text of the first URL element under PowerBuilder:
/howto/topic[@name='PowerBuilder']/url/text()
This will get you the second:
/howto/topic[@name='PowerBuilder']/url[2]/text()
You get that with this code:
expr.evaluate(doc, XPathConstants.STRING);
If you don't know how many URLs are in a given node, then you should rather do something like this:
XPathExpression expr = xpath.compile("/howto/topic[@name='PowerBuilder']/url");
NodeList nl = (NodeList) expr.evaluate(doc, XPathConstants.NODESET);
And then loop over the NodeList.
Do this
<% for(int i = 0; i < allFestivals.size(); i+=1) { %>
<tr>
<td><%=allFestivals.get(i).getFestivalName()%></td>
</tr>
<% } %>
Better way is to use c:foreach see link jstl for each
if you want to know a remote redis server's version, just connect to that server and issue command "info server", you will get things like this:
...
redis_version:3.2.12
redis_git_sha1:00000000
redis_git_dirty:0
redis_build_id:9c3b73db5f7822b7
redis_mode:standalone
os:Linux 2.6.32.43-tlinux-1.0.26-default x86_64
arch_bits:64
multiplexing_api:epoll
gcc_version:4.9.4
process_id:5034
run_id:a45b2ffdc31d7f40a1652c235582d5d277eb5eec
I love schemaspy for schema visualisations. Look at the sample output they provide, and drool. Note the tabs!
You'll need to download the JDBC driver here, then your command should look something like:
java -jar schemaspy-6.0.0-rc2.jar -t pgsql -db database_name -host myhost -u username -p password -o ./schemaspy -dp postgresql-9.3-1100.jdbc3.jar -s public -noads
Sometimes using options -port
will not working if your database has diferrent port, so you have to add manual port after host parameter, for example:
java -jar schemaspy-6.0.0-rc2.jar -t pgsql -db database_name -host myhost:myport -u username -p password -o ./schemaspy -dp postgresql-9.3-1100.jdbc3.jar -s public -noads
You'll need to install graphviz
as well if you want graphics (apt-get install graphviz
for debian based distros).
It can very much be an ssh-agent issue.
Check whether there is an ssh-agent PID currently running with eval "$(ssh-agent -s)"
Check whether your identity is added with ssh-add -l
and if not, add it with ssh-add <pathToYourRSAKey>
.
Then try again your ssh command (or any other command that spawns ssh daemons, like autossh for example) that returned 255.
This one is tricky problem, i set margin to textview in a row of a table layout. see the below:
TableLayout tl = new TableLayout(this);
tl.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
TableRow tr = new TableRow(this);
tr.setBackgroundResource(R.color.rowColor);
LayoutParams params = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
params.setMargins(4, 4, 4, 4);
TextView tv = new TextView(this);
tv.setBackgroundResource(R.color.textviewColor);
tv.setText("hello");
tr.addView(tv, params);
TextView tv2 = new TextView(this);
tv2.setBackgroundResource(R.color.textviewColor);
tv2.setText("hi");
tr.addView(tv2, params);
tl.addView(tr);
setContentView(tl);
the class needed to import for LayoutParams for use in a table row is :
import android.widget.**TableRow**.LayoutParams;
important to note that i added the class for table row. similarly many other classes are available to use LayoutParams like:
import android.widget.**RelativeLayout**.LayoutParams;
import android.widget.LinearLayout.LayoutParams;
so use accordingly.
For me the solution was to replace
service mongod start
with
start mongod
Simply put, hash-based collections aren't indexed so you have to do it manually.
I don't have Python 2.7 installed, but in Python 3.3 calling Popen
with stdout
set to sys.stdout
worked just fine. Not before I had escaped the backslashes in the path, though.
>>> import subprocess
>>> import sys
>>> p = subprocess.Popen(['powershell.exe', 'C:\\Temp\\test.ps1'], stdout=sys.stdout)
>>> Hello World
_
QT provides this with OS abstraction as QCoreApplication::applicationDirPath()
You can use numpy to convert a list directly to a floating array or matrix.
import numpy as np
list_ex = [1, 0] # This a list
list_int = np.array(list_ex) # This is a numpy integer array
If you want to convert the integer array to a floating array then add 0. to it
list_float = np.array(list_ex) + 0. # This is a numpy floating array
Check this: USING FOR LOOP
for a in range(5):
x='A'
val=chr(ord(x) + a)
print(val)
LOOP OUTPUT: A B C D E
The solutions above are right but might crash in FireFox and Safari! and that's what webility.js is trying to solve. Check the toUTC
function, it works on most of the main browers and it returns the time in ISO format
Alternatively, cv2.merge()
can be used to turn a single channel binary mask layer into a three channel color image by merging the same layer together as the blue, green, and red layers of the new image. We pass in a list of the three color channel layers - all the same in this case - and the function returns a single image with those color channels. This effectively transforms a grayscale image of shape (height, width, 1)
into (height, width, 3)
To address your problem
I did some thresholding on an image and want to label the contours in green, but they aren't showing up in green because my image is in black and white.
This is because you're trying to display three channels on a single channel image. To fix this, you can simply merge the three single channels
image = cv2.imread('image.png')
gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
gray_three = cv2.merge([gray,gray,gray])
Example
We create a color image with dimensions (200,200,3)
image = (np.random.standard_normal([200,200,3]) * 255).astype(np.uint8)
Next we convert it to grayscale and create another image using cv2.merge()
with three gray channels
gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
gray_three = cv2.merge([gray,gray,gray])
We now draw a filled contour onto the single channel grayscale image (left) with shape (200,200,1)
and the three channel grayscale image with shape (200,200,3)
(right). The left image showcases the problem you're experiencing since you're trying to display three channels on a single channel image. After merging the grayscale image into three channels, we can now apply color onto the image
contour = np.array([[10,10], [190, 10], [190, 80], [10, 80]])
cv2.fillPoly(gray, [contour], [36,255,12])
cv2.fillPoly(gray_three, [contour], [36,255,12])
Full code
import cv2
import numpy as np
# Create random color image
image = (np.random.standard_normal([200,200,3]) * 255).astype(np.uint8)
# Convert to grayscale (1 channel)
gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
# Merge channels to create color image (3 channels)
gray_three = cv2.merge([gray,gray,gray])
# Fill a contour on both the single channel and three channel image
contour = np.array([[10,10], [190, 10], [190, 80], [10, 80]])
cv2.fillPoly(gray, [contour], [36,255,12])
cv2.fillPoly(gray_three, [contour], [36,255,12])
cv2.imshow('image', image)
cv2.imshow('gray', gray)
cv2.imshow('gray_three', gray_three)
cv2.waitKey()
for i in A:
print('\t'.join(map(str, i)))
In my case, boolean values in my Python dict were the problem. JSON boolean values are in lowercase ("true", "false") whereas in Python they are in Uppercase ("True", "False"). Couldn't find this solution anywhere online but hope it helps.
If you want to do rsync and use custom user and custom ssh key, you need to write this key in rsync options.
---
- name: rsync
hosts: serverA,serverB,serverC,serverD,serverE,serverF
gather_facts: no
vars:
ansible_user: oracle
ansible_ssh_private_key_file: ./mykey
src_file: "/path/to/file.txt"
tasks:
- name: Copy Remote-To-Remote from serverA to server{B..F}
synchronize:
src: "{{ src_file }}"
dest: "{{ src_file }}"
rsync_opts:
- "-e ssh -i /remote/path/to/mykey"
delegate_to: serverA
you should change your colour here
<style name="Base.Theme.DesignDemo" parent="Theme.AppCompat.Light.NoActionBar">
<item name="colorPrimary">#673AB7</item>
<item name="colorPrimaryDark">#512DA8</item>
<item name="colorAccent">#FF4081</item>
<item name="android:windowBackground">@color/window_background</item>
</style>
Use Form.Activate()
or Form.Focus()
methods.
Start From the material design update, it support app:strokeColor
and also app:strokeWidth
. see more
to use material design update. add following code to build.gradle
(:app)
dependencies {
// ...
implementation 'com.google.android.material:material:1.0.0'
// ...
}
and Change CardView
to MaterialCardView
Forget float, margin and html 3/5. The mail is very obsolete. You need do all with table. One line = one table. You need margin or padding ? Do another column.
Example : i need one line with 1 One Picture of 40*40 2 One margin of 10 px 3 One text of 400px
I start my line :
<table style=" background-repeat:no-repeat; width:450px;margin:0;" cellpadding="0" cellspacing="0" border="0">
<tr style="height:40px; width:450px; margin:0;">
<td style="height:40px; width:40px; margin:0;">
<img src="" style="width=40px;height40;margin:0;display:block"
</td>
<td style="height:40px; width:10px; margin:0;">
</td>
<td style="height:40px; width:400px; margin:0;">
<p style=" margin:0;"> my text </p>
</td>
</tr>
</table>
with MariaDb, above solutions doesn't works.
Use (exemple below with ubuntu 16.04 and mariadb-server Distrib 10.0.28):
sudo mysql_secure_installation
…
Change the root password? [Y/n]
New password:
In a class you might call it like this:
public static string GetIPAddress(HttpRequestBase request)
{
string ip;
try
{
ip = request.ServerVariables["HTTP_X_FORWARDED_FOR"];
if (!string.IsNullOrEmpty(ip))
{
if (ip.IndexOf(",") > 0)
{
string[] ipRange = ip.Split(',');
int le = ipRange.Length - 1;
ip = ipRange[le];
}
} else
{
ip = request.UserHostAddress;
}
} catch { ip = null; }
return ip;
}
I used this in a razor app with great results.
The best answer I use to receive data from server and display it
constructor(props){
super(props);
this.state = {
items2 : [{}],
isLoading: true
}
}
componentWillMount (){
axios({
method: 'get',
responseType: 'json',
url: '....',
})
.then(response => {
self.setState({
items2: response ,
isLoading: false
});
console.log("Asmaa Almadhoun *** : " + self.state.items2);
})
.catch(error => {
console.log("Error *** : " + error);
});
})}
render() {
return(
{ this.state.isLoading &&
<i className="fa fa-spinner fa-spin"></i>
}
{ !this.state.isLoading &&
//external component passing Server data to its classes
<TestDynamic items={this.state.items2}/>
}
) }
In C# Predicates are simply delegates that return booleans. They're useful (in my experience) when you're searching through a collection of objects and want something specific.
I've recently run into them in using 3rd party web controls (like treeviews) so when I need to find a node within a tree, I use the .Find() method and pass a predicate that will return the specific node I'm looking for. In your example, if 'a' mod 2 is 0, the delegate will return true. Granted, when I'm looking for a node in a treeview, I compare it's name, text and value properties for a match. When the delegate finds a match, it returns the specific node I was looking for.
serverIPaddress/~cpanelusername will only work for cPanel. It will not work for Parallel's Panel.
As long as you have the website created on the shared, VPS or Dedicated, you should be able to always use the following in your host file, which is what your browser will use.
67.225.235.59 somerandomservice.com www.somerandomservice.com
Try using the decimal entity  
instead of the named entity. If that doesn't work, you should be able to simply use the unicode character for a non-breaking space instead of the
entity.
(Note: I did not try this in XPather, but I did try it in Oxygen.)
webView.clearCache(true)
appFormWebView.clearFormData()
appFormWebView.clearHistory()
appFormWebView.clearSslPreferences()
CookieManager.getInstance().removeAllCookies(null)
CookieManager.getInstance().flush()
WebStorage.getInstance().deleteAllData()
This solution worked for me:
tabBarOptions: {
showIcon: true,
showLabel: false,
style: {
backgroundColor: '#000',
borderTopLeftRadius: 40,
borderTopRightRadius: 40,
position: 'relative',
zIndex: 2,
marginTop: -48
}
}