I believe the point here is that even if a collection is Unmodifiable, that does not ensure that it cannot change. Take for example a collection that evicts elements if they are too old. Unmodifiable just means that the object holding the reference cannot change it, not that it cannot change. A true example of this is Collections.unmodifiableList
method. It returns an unmodifiable view of a List. The the List reference that was passed into this method is still modifiable and so the list can be modified by any holder of the reference that was passed. This can result in ConcurrentModificationExceptions and other bad things.
Immutable, mean that in no way can the collection be changed.
Second question: An Immutable collection does not mean that the objects contained in the collection will not change, just that collection will not change in the number and composition of objects that it holds. In other words, the collection's list of references will not change. That does not mean that the internals of the object being referenced cannot change.
Even the below approach works
line = "a,b,c,d,e"
alpha = list(line)
while ',' in alpha:
alpha.remove(',')
finalString = ''.join(alpha)
print(finalString)
output: abcde
Imagine you pass a mutable string to a function but don't expect it to be changed. Then what if the function changes that string? In C++, for instance, you could simply do call-by-value (difference between std::string
and std::string&
parameter), but in C# it's all about references so if you passed mutable strings around every function could change it and trigger unexpected side effects.
This is just one of various reasons. Performance is another one (interned strings, for example).
There is one thing that may be optimized in the suggested solutions. Having many calls to Replace()
makes the code to do multiple passes over the same string. With very long strings the solutions may be slow because of CPU cache capacity misses. May be one should consider replacing multiple strings in a single pass.
You could do:
Color c = Color.FromArgb(red, green, blue); //red, green and blue are integer variables containing red, green and blue components
if u also want ur UI (ie. ur flatList) to be up to date, use PrevState: in the example below if user clicks on the button , it is going to add a new object to the list( both in the model and UI)
data: ['shopping','reading'] // declared in constructor
onPress={() => {this.setState((prevState, props) => {
return {data: [new obj].concat(prevState.data) };
})}}.
It is most accurate to say that methods with a Bang! are the more dangerous or surprising version. There are many methods that mutate without a Bang such as .destroy
and in general methods only have bangs where a safer alternative exists in the core lib.
For instance, on Array we have .compact
and .compact!
, both methods mutate the array, but .compact!
returns nil instead of self if there are no nil's in the array, which is more surprising than just returning self.
The only non-mutating method I've found with a bang is Kernel
's .exit!
which is more surprising than .exit
because you cannot catch SystemExit
while the process is closing.
Rails and ActiveRecord continues this trend in that it uses bang for more 'surprising' effects like .create!
which raises errors on failure.
Before proceeding further with the fuss of immutability, let's just take a look into the String
class and its functionality a little before coming to any conclusion.
This is how String
works:
String str = "knowledge";
This, as usual, creates a string containing "knowledge"
and assigns it a reference str
. Simple enough? Lets perform some more functions:
String s = str; // assigns a new reference to the same string "knowledge"
Lets see how the below statement works:
str = str.concat(" base");
This appends a string " base"
to str
. But wait, how is this possible, since String
objects are immutable? Well to your surprise, it is.
When the above statement is executed, the VM takes the value of String str
, i.e. "knowledge"
and appends " base"
, giving us the value "knowledge base"
. Now, since String
s are immutable, the VM can't assign this value to str
, so it creates a new String
object, gives it a value "knowledge base"
, and gives it a reference str
.
An important point to note here is that, while the String
object is immutable, its reference variable is not. So that's why, in the above example, the reference was made to refer to a newly formed String
object.
At this point in the example above, we have two String
objects: the first one we created with value "knowledge"
, pointed to by s
, and the second one "knowledge base"
, pointed to by str
. But, technically, we have three String
objects, the third one being the literal "base"
in the concat
statement.
What if we didn't have another reference s
to "knowledge"
? We would have lost that String
. However, it still would have existed, but would be considered lost due to having no references.
Look at one more example below
String s1 = "java";
s1.concat(" rules");
System.out.println("s1 refers to "+s1); // Yes, s1 still refers to "java"
What's happening:
String
"java"
and refer s1
to it.String
"java rules"
, but nothing
refers to it. So, the second String
is instantly lost. We can't reach
it.The reference variable s1
still refers to the original String
"java"
.
Almost every method, applied to a String
object in order to modify it, creates new String
object. So, where do these String
objects go? Well, these exist in memory, and one of the key goals of any programming language is to make efficient use of memory.
As applications grow, it's very common for String
literals to occupy large area of memory, which can even cause redundancy. So, in order to make Java more efficient, the JVM sets aside a special area of memory called the "String constant pool".
When the compiler sees a String
literal, it looks for the String
in the pool. If a match is found, the reference to the new literal is directed to the existing String
and no new String
object is created. The existing String
simply has one more reference. Here comes the point of making String
objects immutable:
In the String
constant pool, a String
object is likely to have one or many references. If several references point to same String
without even knowing it, it would be bad if one of the references modified that String
value. That's why String
objects are immutable.
Well, now you could say, what if someone overrides the functionality of String
class? That's the reason that the String
class is marked final
so that nobody can override the behavior of its methods.
To integrate the previous answers, there's an obvious advantage in declaring constant variables, apart from the performance reason: if you accidentally try to change or re-declare them in the code, the program will respectively not change the value or throw an error.
For example, compare:
// Will output 'SECRET'
const x = 'SECRET'
if (x = 'ANOTHER_SECRET') { // Warning! assigning a value variable in an if condition
console.log (x)
}
with:
// Will output 'ANOTHER_SECRET'
var y = 'SECRET'
if (y = 'ANOTHER_SECRET') {
console.log (y)
}
or
// Will throw TypeError: const 'x' has already been declared
const x = "SECRET"
/* complex code */
var x = 0
with
// Will reassign y and cause trouble
var y = "SECRET"
/* complex code */
var y = 0
While it's true that Collections.unmodifiableList()
works, sometimes you may have a large library having methods already defined to return arrays (e.g. String[]
).
To prevent breaking them, you can actually define auxiliary arrays that will store the values:
public class Test {
private final String[] original;
private final String[] auxiliary;
/** constructor */
public Test(String[] _values) {
original = new String[_values.length];
// Pre-allocated array.
auxiliary = new String[_values.length];
System.arraycopy(_values, 0, original, 0, _values.length);
}
/** Get array values. */
public String[] getValues() {
// No need to call clone() - we pre-allocated auxiliary.
System.arraycopy(original, 0, auxiliary, 0, original.length);
return auxiliary;
}
}
To test:
Test test = new Test(new String[]{"a", "b", "C"});
System.out.println(Arrays.asList(test.getValues()));
String[] values = test.getValues();
values[0] = "foobar";
// At this point, "foobar" exist in "auxiliary" but since we are
// copying "original" to "auxiliary" for each call, the next line
// will print the original values "a", "b", "c".
System.out.println(Arrays.asList(test.getValues()));
Not perfect, but at least you have "pseudo immutable arrays" (from the class perspective) and this will not break related code.
Use:
String str = "whatever";
str = str.replaceAll("[,.]", "");
replaceAll takes a regular expression. This:
[,.]
...looks for each comma and/or period.
A mutable object has to have at least a method able to mutate the object. For example, the list
object has the append
method, which will actually mutate the object:
>>> a = [1,2,3]
>>> a.append('hello') # `a` has mutated but is still the same object
>>> a
[1, 2, 3, 'hello']
but the class float
has no method to mutate a float object. You can do:
>>> b = 5.0
>>> b = b + 0.1
>>> b
5.1
but the =
operand is not a method. It just make a bind between the variable and whatever is to the right of it, nothing else. It never changes or creates objects. It is a declaration of what the variable will point to, since now on.
When you do b = b + 0.1
the =
operand binds the variable to a new float, wich is created with te result of 5 + 0.1
.
When you assign a variable to an existent object, mutable or not, the =
operand binds the variable to that object. And nothing more happens
In either case, the =
just make the bind. It doesn't change or create objects.
When you do a = 1.0
, the =
operand is not wich create the float, but the 1.0
part of the line. Actually when you write 1.0
it is a shorthand for float(1.0)
a constructor call returning a float object. (That is the reason why if you type 1.0
and press enter you get the "echo" 1.0
printed below; that is the return value of the constructor function you called)
Now, if b
is a float and you assign a = b
, both variables are pointing to the same object, but actually the variables can't comunicate betweem themselves, because the object is inmutable, and if you do b += 1
, now b
point to a new object, and a
is still pointing to the oldone and cannot know what b
is pointing to.
but if c
is, let's say, a list
, and you assign a = c
, now a
and c
can "comunicate", because list
is mutable, and if you do c.append('msg')
, then just checking a
you get the message.
(By the way, every object has an unique id number asociated to, wich you can get with id(x)
. So you can check if an object is the same or not checking if its unique id has changed.)
a = 'dog'
address = id(a)
print(id(a))
a = a + 'cat'
print(id(a)) #Address changes
import ctypes
ctypes.cast(address, ctypes.py_object).value #value at old address is intact
You could use ES6 Map
const colors = new Map([
['RED', 'red'],
['BLUE', 'blue'],
['GREEN', 'green']
]);
console.log(colors.get('RED'));
Objects which are immutable can not have their state changed after they have been created.
There are three main reasons to use immutable objects whenever you can, all of which will help to reduce the number of bugs you introduce in your code:
There are also some other optimisations you might be able to make in code when you know that the state of an object is immutable - caching the calculated hash, for example - but these are optimisations and therefore not nearly so interesting.
In Java, all strings are immutable. When you are trying to modify a String
, what you are really doing is creating a new one. However, when you use a StringBuilder
, you are actually modifying the contents, instead of creating a new one.
Use btn-primary-spacing
class for all buttons remove margin-left
class
Example :
<button type="button" class="btn btn-primary btn-color btn-bg-color btn-sm col-xs-2 btn-primary-spacing">
<span class="glyphicon glyphicon-plus" aria-hidden="true"></span> ADD PACKET
</button>
CSS will be like :
.btn-primary-spacing
{
margin-right: 5px;
margin-bottom: 5px !important;
}
This Python code is my quick and dirty attempt to implement the algorithm:
import math
from collections import Counter
def build_vector(iterable1, iterable2):
counter1 = Counter(iterable1)
counter2 = Counter(iterable2)
all_items = set(counter1.keys()).union(set(counter2.keys()))
vector1 = [counter1[k] for k in all_items]
vector2 = [counter2[k] for k in all_items]
return vector1, vector2
def cosim(v1, v2):
dot_product = sum(n1 * n2 for n1, n2 in zip(v1, v2) )
magnitude1 = math.sqrt(sum(n ** 2 for n in v1))
magnitude2 = math.sqrt(sum(n ** 2 for n in v2))
return dot_product / (magnitude1 * magnitude2)
l1 = "Julie loves me more than Linda loves me".split()
l2 = "Jane likes me more than Julie loves me or".split()
v1, v2 = build_vector(l1, l2)
print(cosim(v1, v2))
A solution I came up with is to use a vis.js instance in an iframe. This shows an interactive 3D plot inside a notebook, which still works in nbviewer. The visjs code is borrowed from the example code on the 3D graph page
A small notebook to illustrate this: demo
The code itself:
from IPython.core.display import display, HTML
import json
def plot3D(X, Y, Z, height=600, xlabel = "X", ylabel = "Y", zlabel = "Z", initialCamera = None):
options = {
"width": "100%",
"style": "surface",
"showPerspective": True,
"showGrid": True,
"showShadow": False,
"keepAspectRatio": True,
"height": str(height) + "px"
}
if initialCamera:
options["cameraPosition"] = initialCamera
data = [ {"x": X[y,x], "y": Y[y,x], "z": Z[y,x]} for y in range(X.shape[0]) for x in range(X.shape[1]) ]
visCode = r"""
<link href="https://cdnjs.cloudflare.com/ajax/libs/vis/4.21.0/vis.min.css" type="text/css" rel="stylesheet" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/vis/4.21.0/vis.min.js"></script>
<div id="pos" style="top:0px;left:0px;position:absolute;"></div>
<div id="visualization"></div>
<script type="text/javascript">
var data = new vis.DataSet();
data.add(""" + json.dumps(data) + """);
var options = """ + json.dumps(options) + """;
var container = document.getElementById("visualization");
var graph3d = new vis.Graph3d(container, data, options);
graph3d.on("cameraPositionChange", function(evt)
{
elem = document.getElementById("pos");
elem.innerHTML = "H: " + evt.horizontal + "<br>V: " + evt.vertical + "<br>D: " + evt.distance;
});
</script>
"""
htmlCode = "<iframe srcdoc='"+visCode+"' width='100%' height='" + str(height) + "px' style='border:0;' scrolling='no'> </iframe>"
display(HTML(htmlCode))
If the list is of type system.collections.generic you can use the "CopyTo" method available to copy elements of your array to other sub arrays. You specify the start element and number of elements to copy.
You could also make 3 clones of your original list and use the "RemoveRange" on each list to shrink the list to the size you want.
Or just create a helper method to do it for you.
Relative to most people here I am new to java but since I haven't seen a similar suggestion I have another alternative to suggest. Im not sure if its a good practice or not, or even suggested before and I just didn't get it. I just like it since I think its self descriptive.
/*Just to merge functions in a common name*/
public class CustomFunction{
public CustomFunction(){}
}
/*Actual functions*/
public class Function1 extends CustomFunction{
public Function1(){}
public void execute(){...something here...}
}
public class Function2 extends CustomFunction{
public Function2(){}
public void execute(){...something here...}
}
.....
/*in Main class*/
CustomFunction functionpointer = null;
then depending on the application, assign
functionpointer = new Function1();
functionpointer = new Function2();
etc.
and call by
functionpointer.execute();
Use ssh-agent for your keys.
DECLARE @q nvarchar(4000)
SET @q = 'DECLARE @tmp TABLE (code VARCHAR(50), mount MONEY)
INSERT INTO @tmp
(
code,
mount
)
SELECT coa_code,
amount
FROM T_Ledger_detail
SELECT *
FROM @tmp'
EXEC sp_executesql @q
If you want in dynamic query
DateTimeFormatter
has in-built formats that can directly be used to parse a character sequence. It is case Sensitive, Nov will work however nov and
NOV wont work:
DateTimeFormatter pattern = DateTimeFormatter.ofPattern("yyyy-MMM-dd");
try {
LocalDate datetime = LocalDate.parse(oldDate, pattern);
System.out.println(datetime);
} catch (DateTimeParseException e) {
// DateTimeParseException - Text '2019-nov-12' could not be parsed at index 5
// Exception handling message/mechanism/logging as per company standard
}
DateTimeFormatterBuilder
provides custom way to create a formatter. It is Case Insensitive, Nov , nov and NOV will be treated as same.
DateTimeFormatter f = new DateTimeFormatterBuilder().parseCaseInsensitive()
.append(DateTimeFormatter.ofPattern("yyyy-MMM-dd")).toFormatter();
try {
LocalDate datetime = LocalDate.parse(oldDate, f);
System.out.println(datetime); // 2019-11-12
} catch (DateTimeParseException e) {
// Exception handling message/mechanism/logging as per company standard
}
Multiple variations of a font family can be declared by changing the font-weight and src property of @font-face rule.
/* Regular Weight */
@font-face {
font-family: Montserrat;
src: url("../fonts/Montserrat-Regular.ttf");
}
/* SemiBold (600) Weight */
@font-face {
font-family: Montserrat;
src: url("../fonts/Montserrat-SemiBold.ttf");
font-weight: 600;
}
/* Bold Weight */
@font-face {
font-family: Montserrat;
src: url("../fonts/Montserrat-Bold.ttf");
font-weight: bold;
}
Declared rules can be used by following
/* Regular */
font-family: Montserrat;
/* Semi Bold */
font-family: Montserrat;
font-weght: 600;
/* Bold */
font-family: Montserrat;
font-weight: bold;
To install a specific package:
conda install <pkg>=<version>
eg:
conda install matplotlib=1.4.3
Try This
public void refreshActivity() {
Intent i = new Intent(this, MainActivity.class);
i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(i);
finish();
}
or in Fragment
public void refreshActivity() {
Intent i = new Intent(getActivity(), MainActivity.class);
i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(i);
finish();
}
And Add this method to your onBackPressed() like
@Override
public void onBackPressed() {
refreshActivity();
super.onBackPressed();
}
}
Thats It...
Here's the solution I came up with:
select FIELD from TABLE where FIELD > LASTVAL order by FIELD fetch first N rows only;
By initializing LASTVAL to 0 (or '' for a text field), then setting it to the last value in the most recent set of records, this will step through the table in chunks of N records.
I have worked on some servers where sort don't support '-u' option. there we have to use
sort xyz | uniq
Iframe
<iframe id="fred" style="border:1px solid #666CCC" title="PDF in an i-Frame" src="PDFData.pdf" frameborder="1" scrolling="auto" height="1100" width="850" ></iframe>
Object
<object data="your_url_to_pdf" type="application/pdf">
<embed src="your_url_to_pdf" type="application/pdf" />
</object>
It seems that nobody actually read your question and looked at your source code. Here's the answer you all have been waiting for:
#header_content p {
margin-top: 0;
}
Please take a good look here: http://jquerymobile.com/test/docs/api/methods.html
$.mobile.changePage()
is to change from one page to another, and the parameter can be a url or a page object. ( only #result will also work )
$.mobile.page()
isn't recommended anymore, please use .trigger( "create")
, see also: JQuery Mobile .page() function causes infinite loop?
Important: Create vs. refresh: An important distinction
Note that there is an important difference between the create event and refresh method that some widgets have. The create event is suited for enhancing raw markup that contains one or more widgets. The refresh method that some widgets have should be used on existing (already enhanced) widgets that have been manipulated programmatically and need the UI be updated to match.
For example, if you had a page where you dynamically appended a new unordered list with data-role=listview attribute after page creation, triggering create on a parent element of that list would transform it into a listview styled widget. If more list items were then programmatically added, calling the listview’s refresh method would update just those new list items to the enhanced state and leave the existing list items untouched.
$.mobile.refresh()
doesn't exist i guess
So what are you using for your results? A listview? Then you can update it by doing:
$('ul').listview('refresh');
Example: http://operationmobile.com/dont-forget-to-call-refresh-when-adding-items-to-your-jquery-mobile-list/
Otherwise you can do:
$('#result').live("pageinit", function(){ // or pageshow
// your dom manipulations here
});
The relevant section of the MySQL manual is here. I'd start by going through the debugging steps listed there.
Also, remember that localhost and 127.0.0.1 are not the same thing in this context:
localhost
, then a socket or pipe is used.127.0.0.1
, then the client is forced to use TCP/IP.So, for example, you can check if your database is listening for TCP connections vi netstat -nlp
. It seems likely that it IS listening for TCP connections because you say that mysql -h 127.0.0.1
works just fine. To check if you can connect to your database via sockets, use mysql -h localhost
.
If none of this helps, then you probably need to post more details about your MySQL config, exactly how you're instantiating the connection, etc.
Personally, I ran these exact steps:
* Install Interop Assemblies: you can install from Microsoft's website https://www.microsoft.com/en-us/download/details.aspx?id=3508&tduid=(09cd06700e5e2553aa540650ec905f71)(256380)(2459594)(TnL5HPStwNw-yuTjfb1FeDiXvvZxhh.R.Q)()
* Check assemblies version: check the version of the assemblies on development and production machines. The assemblies will be in the GAC, in widows 7 this folder is %windir%\assembly.
* Create a Desktop folder: the service uses the desktop folder under systemprofile so you will need to create this folder if not there, here is the location of the folder:
For 64 bit applications : C:\Windows\SysWOW64\config\systemprofile\Desktop
For 32 bit applications : C:\Windows\System32\config\systemprofile\Desktop
* Add DCOM user permissions:
---start the run window and type 'dcomcnfg'.
---Expand Component Services –> Computers –> My Computer –> DCOM Config.
---Look for Microsoft Excel Application. Right click on it and select properties, then select the Security tab.
---Select the Customize radio button under 'Launch and Activation Permissions' and 'Access Permission' and click the Edit button for both to add users as follows.
---------Click the Add button and users 'IIS_IUSRS' and 'NETWORK SERVICE' and give them full privileges.
---Go to the Identity tab and select "The interactive user" option.
---Click Apply and OK.
#######################
### the img page ###
#######################
<script src="https://code.jquery.com/jquery-1.9.1.min.js"></script>
<script src="https://malsup.github.com/jquery.form.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$('#f').live('change' ,function(){
$('#fo').ajaxForm({target: '#d'}).submit();
});
});
</script>
<form id="fo" name="fo" action="nextimg.php" enctype="multipart/form-data" method="post">
<input type="file" name="f" id="f" value="start upload" />
<input type="submit" name="sub" value="upload" />
</form>
<div id="d"></div>
#############################
### the nextimg page ###
#############################
<?php
$name=$_FILES['f']['name'];
$tmp=$_FILES['f']['tmp_name'];
$new=time().$name;
$new="upload/".$new;
move_uploaded_file($tmp,$new);
if($_FILES['f']['error']==0)
{
?>
<h1>PREVIEW</h1><br /><img src="<?php echo $new;?>" width="100" height="100" />
<?php
}
?>
What finally worked for me is what I found here:
http://www.codeproject.com/Tips/395286/How-to-Access-WAMP-Server-in-LAN-or-WAN
To summarize:
set Listen in httpd.conf
:
Listen 192.168.1.154:8081
Add Allow from all to this section:
<Directory "cgi-bin">
AllowOverride None
Options None
Order allow,deny
Allow from all
</Directory>
Set an inbound port rule. I think the was the crucial missing part for me:
Great! The next step is to open port (8081) of the server such that everyone can access your server. This depends on which OS you are using. Like if you are using Windows Vista, then follow the below steps.
Open Control Panel >> System and Security >> Windows Firewall then click on “Advance Setting” and then select “Inbound Rules” from the left panel and then click on “Add Rule…”. Select “PORT” as an option from the list and then in the next screen select “TCP” protocol and enter port number “8081” under “Specific local port” then click on the ”Next” button and select “Allow the Connection” and then give the general name and description to this port and click Done.
Now you are done with PORT opening as well.
Next is “Restart All Services” of WAMP and access your machine in LAN or WAN.
I'm going to show you how you can easily define iterators for your custom containers, but just in case I have created a c++11 library that allows you to easily create custom iterators with custom behavior for any type of container, contiguous or non-contiguous.
You can find it on Github
Here are the simple steps to creating and using custom iterators:
typedef blRawIterator< Type > iterator;
typedef blRawIterator< const Type > const_iterator;
iterator begin(){return iterator(&m_data[0]);};
const_iterator cbegin()const{return const_iterator(&m_data[0]);};
Finally, onto defining our custom iterator classes:
NOTE: When defining custom iterators, we derive from the standard iterator categories to let STL algorithms know the type of iterator we've made.
In this example, I define a random access iterator and a reverse random access iterator:
//-------------------------------------------------------------------
// Raw iterator with random access
//-------------------------------------------------------------------
template<typename blDataType>
class blRawIterator
{
public:
using iterator_category = std::random_access_iterator_tag;
using value_type = blDataType;
using difference_type = std::ptrdiff_t;
using pointer = blDataType*;
using reference = blDataType&;
public:
blRawIterator(blDataType* ptr = nullptr){m_ptr = ptr;}
blRawIterator(const blRawIterator<blDataType>& rawIterator) = default;
~blRawIterator(){}
blRawIterator<blDataType>& operator=(const blRawIterator<blDataType>& rawIterator) = default;
blRawIterator<blDataType>& operator=(blDataType* ptr){m_ptr = ptr;return (*this);}
operator bool()const
{
if(m_ptr)
return true;
else
return false;
}
bool operator==(const blRawIterator<blDataType>& rawIterator)const{return (m_ptr == rawIterator.getConstPtr());}
bool operator!=(const blRawIterator<blDataType>& rawIterator)const{return (m_ptr != rawIterator.getConstPtr());}
blRawIterator<blDataType>& operator+=(const difference_type& movement){m_ptr += movement;return (*this);}
blRawIterator<blDataType>& operator-=(const difference_type& movement){m_ptr -= movement;return (*this);}
blRawIterator<blDataType>& operator++(){++m_ptr;return (*this);}
blRawIterator<blDataType>& operator--(){--m_ptr;return (*this);}
blRawIterator<blDataType> operator++(int){auto temp(*this);++m_ptr;return temp;}
blRawIterator<blDataType> operator--(int){auto temp(*this);--m_ptr;return temp;}
blRawIterator<blDataType> operator+(const difference_type& movement){auto oldPtr = m_ptr;m_ptr+=movement;auto temp(*this);m_ptr = oldPtr;return temp;}
blRawIterator<blDataType> operator-(const difference_type& movement){auto oldPtr = m_ptr;m_ptr-=movement;auto temp(*this);m_ptr = oldPtr;return temp;}
difference_type operator-(const blRawIterator<blDataType>& rawIterator){return std::distance(rawIterator.getPtr(),this->getPtr());}
blDataType& operator*(){return *m_ptr;}
const blDataType& operator*()const{return *m_ptr;}
blDataType* operator->(){return m_ptr;}
blDataType* getPtr()const{return m_ptr;}
const blDataType* getConstPtr()const{return m_ptr;}
protected:
blDataType* m_ptr;
};
//-------------------------------------------------------------------
//-------------------------------------------------------------------
// Raw reverse iterator with random access
//-------------------------------------------------------------------
template<typename blDataType>
class blRawReverseIterator : public blRawIterator<blDataType>
{
public:
blRawReverseIterator(blDataType* ptr = nullptr):blRawIterator<blDataType>(ptr){}
blRawReverseIterator(const blRawIterator<blDataType>& rawIterator){this->m_ptr = rawIterator.getPtr();}
blRawReverseIterator(const blRawReverseIterator<blDataType>& rawReverseIterator) = default;
~blRawReverseIterator(){}
blRawReverseIterator<blDataType>& operator=(const blRawReverseIterator<blDataType>& rawReverseIterator) = default;
blRawReverseIterator<blDataType>& operator=(const blRawIterator<blDataType>& rawIterator){this->m_ptr = rawIterator.getPtr();return (*this);}
blRawReverseIterator<blDataType>& operator=(blDataType* ptr){this->setPtr(ptr);return (*this);}
blRawReverseIterator<blDataType>& operator+=(const difference_type& movement){this->m_ptr -= movement;return (*this);}
blRawReverseIterator<blDataType>& operator-=(const difference_type& movement){this->m_ptr += movement;return (*this);}
blRawReverseIterator<blDataType>& operator++(){--this->m_ptr;return (*this);}
blRawReverseIterator<blDataType>& operator--(){++this->m_ptr;return (*this);}
blRawReverseIterator<blDataType> operator++(int){auto temp(*this);--this->m_ptr;return temp;}
blRawReverseIterator<blDataType> operator--(int){auto temp(*this);++this->m_ptr;return temp;}
blRawReverseIterator<blDataType> operator+(const int& movement){auto oldPtr = this->m_ptr;this->m_ptr-=movement;auto temp(*this);this->m_ptr = oldPtr;return temp;}
blRawReverseIterator<blDataType> operator-(const int& movement){auto oldPtr = this->m_ptr;this->m_ptr+=movement;auto temp(*this);this->m_ptr = oldPtr;return temp;}
difference_type operator-(const blRawReverseIterator<blDataType>& rawReverseIterator){return std::distance(this->getPtr(),rawReverseIterator.getPtr());}
blRawIterator<blDataType> base(){blRawIterator<blDataType> forwardIterator(this->m_ptr); ++forwardIterator; return forwardIterator;}
};
//-------------------------------------------------------------------
Now somewhere in your custom container class:
template<typename blDataType>
class blCustomContainer
{
public: // The typedefs
typedef blRawIterator<blDataType> iterator;
typedef blRawIterator<const blDataType> const_iterator;
typedef blRawReverseIterator<blDataType> reverse_iterator;
typedef blRawReverseIterator<const blDataType> const_reverse_iterator;
.
.
.
public: // The begin/end functions
iterator begin(){return iterator(&m_data[0]);}
iterator end(){return iterator(&m_data[m_size]);}
const_iterator cbegin(){return const_iterator(&m_data[0]);}
const_iterator cend(){return const_iterator(&m_data[m_size]);}
reverse_iterator rbegin(){return reverse_iterator(&m_data[m_size - 1]);}
reverse_iterator rend(){return reverse_iterator(&m_data[-1]);}
const_reverse_iterator crbegin(){return const_reverse_iterator(&m_data[m_size - 1]);}
const_reverse_iterator crend(){return const_reverse_iterator(&m_data[-1]);}
.
.
.
// This is the pointer to the
// beginning of the data
// This allows the container
// to either "view" data owned
// by other containers or to
// own its own data
// You would implement a "create"
// method for owning the data
// and a "wrap" method for viewing
// data owned by other containers
blDataType* m_data;
};
You can assign an iterable to side_effect
, and the mock will return the next value in the sequence each time it is called:
>>> from unittest.mock import Mock
>>> m = Mock()
>>> m.side_effect = ['foo', 'bar', 'baz']
>>> m()
'foo'
>>> m()
'bar'
>>> m()
'baz'
Quoting the Mock()
documentation:
If side_effect is an iterable then each call to the mock will return the next value from the iterable.
After lots of searching This code work for me:
Check the permission already has: Check WRITE_EXTERNAL_STORAGE permission Allowed or not?
if(isReadStorageAllowed()){
//If permission is already having then showing the toast
//Toast.makeText(SplashActivity.this,"You already have the permission",Toast.LENGTH_LONG).show();
//Existing the method with return
return;
}else{
requestStoragePermission();
}
private boolean isReadStorageAllowed() {
//Getting the permission status
int result = ContextCompat.checkSelfPermission(this, android.Manifest.permission.WRITE_EXTERNAL_STORAGE);
//If permission is granted returning true
if (result == PackageManager.PERMISSION_GRANTED)
return true;
//If permission is not granted returning false
return false;
}
//Requesting permission
private void requestStoragePermission(){
if (ActivityCompat.shouldShowRequestPermissionRationale(this, android.Manifest.permission.WRITE_EXTERNAL_STORAGE)){
//If the user has denied the permission previously your code will come to this block
//Here you can explain why you need this permission
//Explain here why you need this permission
}
//And finally ask for the permission
ActivityCompat.requestPermissions(this,new String[]{android.Manifest.permission.WRITE_EXTERNAL_STORAGE},REQUEST_WRITE_STORAGE);
}
Implement Override onRequestPermissionsResult method for checking is the user allow or denie
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
//Checking the request code of our request
if(requestCode == REQUEST_WRITE_STORAGE){
//If permission is granted
if(grantResults.length >0 && grantResults[0] == PackageManager.PERMISSION_GRANTED){
//Displaying a toast
Toast.makeText(this,"Permission granted now you can read the storage",Toast.LENGTH_LONG).show();
}else{
//Displaying another toast if permission is not granted
Toast.makeText(this,"Oops you just denied the permission",Toast.LENGTH_LONG).show();
}
}
You could also just do it in one go, by doing the sort first and using head to take the first 3 of each group.
In[34]: df.sort_values(['job','count'],ascending=False).groupby('job').head(3)
Out[35]:
count job source
4 7 sales E
2 6 sales C
1 4 sales B
5 5 market A
8 4 market D
6 3 market B
Here I have compared the difference in two different result sets:
SELECT main.ColumnName, compare.Value PreviousValue, main.Value CurrentValue
FROM
(
SELECT 'Name' AS ColumnName, 'John' as Value UNION ALL
SELECT 'UserName' AS ColumnName, 'jh001' as Value UNION ALL
SELECT 'Department' AS ColumnName, 'HR' as Value UNION ALL
SELECT 'Phone' AS ColumnName, NULL as Value UNION ALL
SELECT 'DOB' AS ColumnName, '1993-01-01' as Value UNION ALL
SELECT 'CreateDate' AS ColumnName, '2017-01-01' as Value UNION ALL
SELECT 'IsActive' AS ColumnName, '1' as Value
) main
INNER JOIN
(
SELECT 'Name' AS ColumnName, 'Rahul' as Value UNION ALL
SELECT 'UserName' AS ColumnName, 'rh001' as Value UNION ALL
SELECT 'Department' AS ColumnName, 'HR' as Value UNION ALL
SELECT 'Phone' AS ColumnName, '01722112233' as Value UNION ALL
SELECT 'DOB' AS ColumnName, '1993-01-01' as Value UNION ALL
SELECT 'CreateDate' AS ColumnName, '2017-01-01' as Value UNION ALL
SELECT 'IsActive' AS ColumnName, '1' as Value
) compare
ON main.ColumnName = compare.ColumnName AND
CASE
WHEN main.Value IS NULL AND compare.Value IS NULL THEN 0
WHEN main.Value IS NULL AND compare.Value IS NOT NULL THEN 1
WHEN main.Value IS NOT NULL AND compare.Value IS NULL THEN 1
WHEN main.Value <> compare.Value THEN 1
END = 1
You can reference those remote tracking branches ~(listed with git branch -r
) with the name of their remote.
You need to fetch the remote branch:
git fetch origin aRemoteBranch
If you want to merge one of those remote branches on your local branch:
git checkout master
git merge origin/aRemoteBranch
Note 1: For a large repo with a long history, you will want to add the --depth=1
option when you use git fetch
.
Note 2: These commands also work with other remote repos so you can setup an origin
and an upstream
if you are working on a fork.
Note 3: user3265569 suggests the following alias in the comments:
From
aLocalBranch
, rungit combine remoteBranch
Alias:combine = !git fetch origin ${1} && git merge origin/${1}
Opposite scenario: If you want to merge one of your local branch on a remote branch (as opposed to a remote branch to a local one, as shown above), you need to create a new local branch on top of said remote branch first:
git checkout -b myBranch origin/aBranch
git merge anotherLocalBranch
The idea here, is to merge "one of your local branch" (here anotherLocalBranch
) to a remote branch (origin/aBranch
).
For that, you create first "myBranch
" as representing that remote branch: that is the git checkout -b myBranch origin/aBranch
part.
And then you can merge anotherLocalBranch
to it (to myBranch
).
This assumes that a month is 1/12 of a year:
#!/usr/bin/awk -f
function mktm(datespec) {
split(datespec, q, "-")
return q[1] * 365.25 + q[3] * 365.25 / 12 + q[2]
}
BEGIN {
printf "%d\n", mktm(ARGV[2]) - mktm(ARGV[1])
}
Lambda expressions are typically used to encapsulate algorithms so that they can be passed to another function. However, it is possible to execute a lambda immediately upon definition:
[&](){ ...your code... }(); // immediately executed lambda expression
is functionally equivalent to
{ ...your code... } // simple code block
This makes lambda expressions a powerful tool for refactoring complex functions. You start by wrapping a code section in a lambda function as shown above. The process of explicit parameterization can then be performed gradually with intermediate testing after each step. Once you have the code-block fully parameterized (as demonstrated by the removal of the &
), you can move the code to an external location and make it a normal function.
Similarly, you can use lambda expressions to initialize variables based on the result of an algorithm...
int a = []( int b ){ int r=1; while (b>0) r*=b--; return r; }(5); // 5!
As a way of partitioning your program logic, you might even find it useful to pass a lambda expression as an argument to another lambda expression...
[&]( std::function<void()> algorithm ) // wrapper section
{
...your wrapper code...
algorithm();
...your wrapper code...
}
([&]() // algorithm section
{
...your algorithm code...
});
Lambda expressions also let you create named nested functions, which can be a convenient way of avoiding duplicate logic. Using named lambdas also tends to be a little easier on the eyes (compared to anonymous inline lambdas) when passing a non-trivial function as a parameter to another function. Note: don't forget the semicolon after the closing curly brace.
auto algorithm = [&]( double x, double m, double b ) -> double
{
return m*x+b;
};
int a=algorithm(1,2,3), b=algorithm(4,5,6);
If subsequent profiling reveals significant initialization overhead for the function object, you might choose to rewrite this as a normal function.
The error "only length-1 arrays can be converted to Python scalars" is raised when the function expects a single value but you pass an array instead.
If you look at the call signature of np.int
, you'll see that it accepts a single value, not an array. In general, if you want to apply a function that accepts a single element to every element in an array, you can use np.vectorize
:
import numpy as np
import matplotlib.pyplot as plt
def f(x):
return np.int(x)
f2 = np.vectorize(f)
x = np.arange(1, 15.1, 0.1)
plt.plot(x, f2(x))
plt.show()
You can skip the definition of f(x) and just pass np.int to the vectorize function: f2 = np.vectorize(np.int)
.
Note that np.vectorize
is just a convenience function and basically a for loop. That will be inefficient over large arrays. Whenever you have the possibility, use truly vectorized functions or methods (like astype(int)
as @FFT suggests).
According to this link, it is possible to use ddms in the tools directory of the android sdk to take screen captures.
To do this within an application (and not during development), there are also applications to do so. But as @zed_0xff points out it certainly requires root.
Use the HorizontalAlignment and VerticalAlignment layout properties. They control how an element uses the space it has inside its parent when more room is available than it required by the element.
The width of a StackPanel, for example, will be as wide as the widest element it contains. So, all narrower elements have a bit of excess space. The alignment properties control what the child element does with the extra space.
The default value for both properties is Stretch, so the child element is stretched to fill all available space. Additional options include Left, Center and Right for HorizontalAlignment and Top, Center and Bottom for VerticalAlignment.
I was stuck in this issue today and found this code is working fine for me
$('#content').on('mousewheel', function(event) {
//console.log(event.deltaX, event.deltaY, event.deltaFactor);
if(event.deltaY > 0) {
console.log('scroll up');
} else {
console.log('scroll down');
}
});
It depends on your definition of "inherit". Does the subclass still have the fields in memory? Definitely. Can it access them directly? No. It's just subtleties of the definition; the point is to understand what's really happening.
verpatch is good, but doesn't handle unicode characters...
try ResourceLib
Still had trouble after trying all of the answers above (I use Visual Studio 2013). Nothing was copied to the publish folder.
The catch was that if I run MSBuild with an individual project instead of a solution, I have to put an additional parameter that specifies Visual Studio version:
/p:VisualStudioVersion=12.0
12.0
is for VS2013, replace with the version you use. Once I added this parameter, it just worked.
The complete command line looks like this:
MSBuild C:\PathToMyProject\MyProject.csproj /p:DeployOnBuild=true /p:PublishProfile=MyPublishProfile /p:VisualStudioVersion=12.0
I've found it here:
http://www.asp.net/mvc/overview/deployment/visual-studio-web-deployment/command-line-deployment
They state:
If you specify an individual project instead of a solution, you have to add a parameter that specifies the Visual Studio version.
This solution only for chrome browser. I am not sure about other browser.
My KISS approach to skip some folders is chaining Get-ChildItem
calls. This excludes root level folders but not deeper level folders if that is what you want.
Get-ChildItem -Exclude folder1,folder2 | Get-ChildItem -Recurse | ...
What I like from this approach is that it is simple and easy to remember. If you don't want to mix folders and files in the first search a filter would be needed.
Modern browsers support a Content Security Policy or CSP. This is the highest level of web security and strongly recommended if you can apply it because it completely blocks all XSS attacks.
Both of your suggestions break with CSP enabled because they allow inline Javascript (which could be injected by a hacker) to execute in your page.
The best practice is to subscribe to the event in Javascript, as in Konrad Rudolph's answer.
for VS2008 with feature pack update, shared_ptr can be found under namespace std::tr1.
std::tr1::shared_ptr<int> MyIntSmartPtr = new int;
of
if you had boost installation path (for example @ C:\Program Files\Boost\boost_1_40_0
) added to your IDE settings:
#include <boost/shared_ptr.hpp>
Here is the simple solution by StreamEx:
StreamEx.of(list).groupingBy(Function.identity(), MoreCollectors.countingInt());
This has the advantage of reducing the Java stream boilerplate code: collect(Collectors.
Whatever approach you take, make sure in the end that you have an updated version of curl and libcurl. You can do curl --version
and see the versions.
Here's what I did to get the latest curl version installed in Ubuntu:
sudo add-apt-repository "deb http://mirrors.kernel.org/ubuntu wily main"
sudo apt-get update
sudo apt-get install curl
When working with Docker Compose, you can use command: postgres -c option=value
in your docker-compose.yml
to configure Postgres.
For example, this makes Postgres log to a file:
command: postgres -c logging_collector=on -c log_destination=stderr -c log_directory=/logs
Adapting Vojtech Vitek's answer, you can use
command: postgres -c config_file=/etc/postgresql.conf
to change the config file Postgres will use. You'd mount your custom config file with a volume:
volumes:
- ./customPostgresql.conf:/etc/postgresql.conf
Here's the docker-compose.yml
of my application, showing how to configure Postgres:
# Start the app using docker-compose pull && docker-compose up to make sure you have the latest image
version: '2.1'
services:
myApp:
image: registry.gitlab.com/bullbytes/myApp:latest
networks:
- myApp-network
db:
image: postgres:9.6.1
# Make Postgres log to a file.
# More on logging with Postgres: https://www.postgresql.org/docs/current/static/runtime-config-logging.html
command: postgres -c logging_collector=on -c log_destination=stderr -c log_directory=/logs
environment:
# Provide the password via an environment variable. If the variable is unset or empty, use a default password
- POSTGRES_PASSWORD=${POSTGRES_PASSWORD:-4WXUms893U6j4GE&Hvk3S*hqcqebFgo!vZi}
# If on a non-Linux OS, make sure you share the drive used here. Go to Docker's settings -> Shared Drives
volumes:
# Persist the data between container invocations
- postgresVolume:/var/lib/postgresql/data
- ./logs:/logs
networks:
myApp-network:
# Our application can communicate with the database using this hostname
aliases:
- postgresForMyApp
networks:
myApp-network:
driver: bridge
# Creates a named volume to persist our data. When on a non-Linux OS, the volume's data will be in the Docker VM
# (e.g., MobyLinuxVM) in /var/lib/docker/volumes/
volumes:
postgresVolume:
Note that when on Linux, the log directory on the host must have the right permissions. Otherwise you'll get the slightly misleading error
FATAL: could not open log file "/logs/postgresql-2017-02-04_115222.log": Permission denied
I say misleading, since the error message suggests that the directory in the container has the wrong permission, when in reality the directory on the host doesn't permit writing.
To fix this, I set the correct permissions on the host using
chgroup ./logs docker && chmod 770 ./logs
A predicate in T is a delegate that takes in a T and returns a bool. List<T>.RemoveAll will remove all elements in a list where calling the predicate returns true. The easiest way to supply a simple predicate is usually a lambda expression, but you can also use anonymous methods or actual methods.
{
List<Vehicle> vehicles;
// Using a lambda
vehicles.RemoveAll(vehicle => vehicle.EnquiryID == 123);
// Using an equivalent anonymous method
vehicles.RemoveAll(delegate(Vehicle vehicle)
{
return vehicle.EnquiryID == 123;
});
// Using an equivalent actual method
vehicles.RemoveAll(VehiclePredicate);
}
private static bool VehiclePredicate(Vehicle vehicle)
{
return vehicle.EnquiryID == 123;
}
You can use the regular expression /(?!$)/
:
"overpopulation".split(/(?!$)/)
The negative look-ahead assertion (?!$)
will match right in front of every character.
One more time, building off of @RalphyZ
This one doesn't break the exposed API.
from argparse import ArgumentParser, SUPPRESS
# Disable default help
parser = ArgumentParser(add_help=False)
required = parser.add_argument_group('required arguments')
optional = parser.add_argument_group('optional arguments')
# Add back help
optional.add_argument(
'-h',
'--help',
action='help',
default=SUPPRESS,
help='show this help message and exit'
)
required.add_argument('--required_arg', required=True)
optional.add_argument('--optional_arg')
Which will show the same as above and should survive future versions:
usage: main.py [-h] [--required_arg REQUIRED_ARG]
[--optional_arg OPTIONAL_ARG]
required arguments:
--required_arg REQUIRED_ARG
optional arguments:
-h, --help show this help message and exit
--optional_arg OPTIONAL_ARG
df.columns.values
also give us the column names
HTML5 Placeholder jQuery Plugin
- by Mathias Bynens (a collaborator on HTML5 Boilerplate and jsPerf)
https://github.com/mathiasbynens/jquery-placeholder
Demo & Examples
http://mathiasbynens.be/demo/placeholder
p.s
I have used this plugin many times and it works a treat. Also it doesn't submit the placeholder text as a value when you submit your form (... a real pain I found with other plugins).
suppose that
x = [
[-5.01,-5.43,1.08,0.86,-2.67,4.94,-2.51,-2.25,5.56,1.03],
[-8.12,-3.48,-5.52,-3.78,0.63,3.29,2.09,-2.13,2.86,-3.33],
[-3.68,-3.54,1.66,-4.11,7.39,2.08,-2.59,-6.94,-2.26,4.33]
]
you can notice that x
has dimension 3*10 if you need to get the mean
to each row you can type this
theMean = np.mean(x1,axis=1)
don't forget to import numpy as np
I had the same problem. Docker running but couldn't access it through CLI.
For me the problem was solved by executing "Docker Quickstart Terminal.app". This is located in the "/Applications/Docker/" folder. As long as I work in this instance of the Terminal app Docker works perfectly. If a second window is needed I have to run the "Quickstart" app once more.
I have a Docker for Mac installation. Therefore I am not sure if my solution is valid for a Homebrew installation.
The "Docker Quickstart Terminal" app seems to be essentially some applescripts to launch the terminal app and a bash start script that initialise all the necessary environment variables.
Hope this helps someone else !
Simply put, you need to rewrite all of your database connections and queries.
You are using mysql_*
functions which are now deprecated and will be removed from PHP in the future. So you need to start using MySQLi or PDO instead, just as the error notice warned you.
A basic example of using PDO (without error handling):
<?php
$db = new PDO('mysql:host=localhost;dbname=testdb;charset=utf8', 'username', 'password');
$result = $db->exec("INSERT INTO table(firstname, lastname) VAULES('John', 'Doe')");
$insertId = $db->lastInsertId();
?>
A basic example of using MySQLi (without error handling):
$db = new mysqli($DBServer, $DBUser, $DBPass, $DBName);
$result = $db->query("INSERT INTO table(firstname, lastname) VAULES('John', 'Doe')");
Here's a handy little PDO tutorial to get you started. There are plenty of others, and ones about the PDO alternative, MySQLi.
SET foreign_key_checks = 0;
DROP TABLE IF EXISTS a,b,c;
SET foreign_key_checks = 1;
Then you do not have to worry about dropping them in the correct order, nor whether they actually exist.
N.B. this is for MySQL only (as in the question). Other databases likely have different methods for doing this.
It is very simple, when a function calls itself for accomplishing a task for undefined and finite number of time. An example from my own code, function for populating a with multilevel category tree
function category_tree($parent=0,$sep='') { $q="select id,name from categorye where parent_id=".$parent; $rs=mysql_query($q); while($rd=mysql_fetch_object($rs)) { echo('id.'">'.$sep.$rd->name.''); category_tree($rd->id,$sep.'--'); } }
You can get the length using the following EL:
#{Bean.list.size()}
You might have to put one or both of:
html { height:100%; }
or
body { height:100%; }
EDIT: Whoops, didn't notice they were floated. You just need to float the container.
If you are talking about browser javascript, you can not write data directly to local file for security reason. HTML 5 new API can only allow you to read files.
But if you want to write data, and enable user to download as a file to local. the following code works:
function download(strData, strFileName, strMimeType) {
var D = document,
A = arguments,
a = D.createElement("a"),
d = A[0],
n = A[1],
t = A[2] || "text/plain";
//build download link:
a.href = "data:" + strMimeType + "charset=utf-8," + escape(strData);
if (window.MSBlobBuilder) { // IE10
var bb = new MSBlobBuilder();
bb.append(strData);
return navigator.msSaveBlob(bb, strFileName);
} /* end if(window.MSBlobBuilder) */
if ('download' in a) { //FF20, CH19
a.setAttribute("download", n);
a.innerHTML = "downloading...";
D.body.appendChild(a);
setTimeout(function() {
var e = D.createEvent("MouseEvents");
e.initMouseEvent("click", true, false, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null);
a.dispatchEvent(e);
D.body.removeChild(a);
}, 66);
return true;
}; /* end if('download' in a) */
//do iframe dataURL download: (older W3)
var f = D.createElement("iframe");
D.body.appendChild(f);
f.src = "data:" + (A[2] ? A[2] : "application/octet-stream") + (window.btoa ? ";base64" : "") + "," + (window.btoa ? window.btoa : escape)(strData);
setTimeout(function() {
D.body.removeChild(f);
}, 333);
return true;
}
to use it:
download('the content of the file', 'filename.txt', 'text/plain');
In my case I also have unmanaged dll's (C++) in workspace and if you specify:
<files>
<file src="bin\*.dll" target="lib" />
</files>
nuget would try to load every dll as an assembly, even the C++ libraries! To avoid this
behaviour explicitly define your C# assemblies with references
tag:
<references>
<reference file="Managed1.dll" />
<reference file="Managed2.dll" />
</references>
Remark: parent of references is metadata -> according to documentation https://docs.microsoft.com/en-us/nuget/reference/nuspec#general-form-and-schema
Documentation: https://docs.microsoft.com/en-us/nuget/reference/nuspec
Just found a very simple yet working solution, by removing <form></form>
from the section I wanted to prevent from posting and refreshing.
<select id="youId" name="yourName">
<select>
<option value="1</option>
<option value="2</option>
<option value="3</option>
</select>
<input id="formStockVal1" type="number"><br><br>
<form>
<button type="reset" id="stockCancel">Cancel</button>
<button type="reset" id="stockConfirm">Add</button>
</form>
Here only Buttons submit as they should.
Make sure that the database is created. I got the same error when I applied the migration to the wrong project in the solution. When I applied the migration to the right project, it created the database and that solved the error.
Here you go:
<style>body {color: #000;}</style>_x000D_
<del> <span style="color:#999">facebook</span> </del>
_x000D_
If you use a TCPServer, UDPServer or their subclasses in the SocketServer module, you can set this class variable (before instanciating a server):
SocketServer.TCPServer.allow_reuse_address = True
(via SocketServer.ThreadingTCPServer - Cannot bind to address after program restart )
This causes the init (constructor) to:
if self.allow_reuse_address:
self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
Error Code:
error during connect: Get http://%2F%2F.%2Fpipe%2Fdocker_engine/v1.29/version: open //./pipe/docker_engine: The system cannot find the file specified. In the default daemon configuration on Windows, the docker client must be run elevated to connect . This error may also indicate that the docker daemon is not running.
Solutions:
1) For Windows 7 Command Window(cmd.exe), open cmd.exe with run as administrator and execute following command:
docker-machine env --shell cmd default
You will receive following output:
SET DOCKER_TLS_VERIFY=1
SET DOCKER_HOST=tcp://192.168.99.100:2376
SET DOCKER_CERT_PATH=C:\Users\USER_NAME\.docker\machine\machines\default
SET DOCKER_MACHINE_NAME=default
SET COMPOSE_CONVERT_WINDOWS_PATHS=true
REM Run this command to configure your shell:
REM @FOR /f "tokens=*" %i IN ('docker-machine env --shell cmd default') DO @%i
Copy the command below and execute on cmd:
@FOR /f "tokens=*" %i IN ('docker-machine env --shell cmd default') DO @%i
And then execute following command to control:
docker version
2) For Windows 7 Powershell, open powershell.exe with run as administrator and execute following command:
docker-machine env --shell=powershell | Invoke-Expression
And then execute following command to control:
docker version
3) If you reopen cmd or powershell, you should repeat the related steps again.
In summary the answer is: set the font size of the form elements to at least 16px
if you are reading from file then this can help you
try{
InputStream inputStream = (InputStream) mnpMainBean.getUploadedBulk().getInputStream();
BufferedReader br = new BufferedReader(new InputStreamReader(inputStream));
String line;
//Ref:03
while ((line = br.readLine()) != null) {
if (line.matches("[A-Z],\\d,(\\d*,){2}(\\s*\\d*\\|\\d*:)+")) {
String[] splitRecord = line.split(",");
//do something
}
else{
br.close();
//error
return;
}
}
br.close();
}
}
catch (IOException ioExpception){
logger.logDebug("Exception " + ioExpception.getStackTrace());
}
If you really wants to do this. Just to address "Call an async method in C# without await", you can execute the async method inside a Task.Run
. This approach will wait until MyAsyncMethod
finish.
public string GetStringData()
{
Task.Run(()=> MyAsyncMethod()).Result;
return "hello world";
}
await
asynchronously unwraps the Result
of your task, whereas just using Result would block until the task had completed.
We have tables in SQL Server 2005 and 2008 with over 1 Billion rows in it (30 million added daily). I can't imagine going down the rats nest of splitting that out into a new table each day.
Much cheaper to add the appropriate disk space (which you need anyway) and RAM.
As @martin and this answer explained, it is complicated. There is no bullet-proof way of getting the client's ip address.
The best that you can do is to try to parse "X-Forwarded-For"
and rely on request.getRemoteAddr();
public static String getClientIpAddress(HttpServletRequest request) {
String xForwardedForHeader = request.getHeader("X-Forwarded-For");
if (xForwardedForHeader == null) {
return request.getRemoteAddr();
} else {
// As of https://en.wikipedia.org/wiki/X-Forwarded-For
// The general format of the field is: X-Forwarded-For: client, proxy1, proxy2 ...
// we only want the client
return new StringTokenizer(xForwardedForHeader, ",").nextToken().trim();
}
}
Try this:
{
"ACCOUNT_EXIST": true,
"MultipleContacts": false
}
boolean success ((Boolean) jsonObject.get("ACCOUNT_EXIST")).booleanValue()
run
command creates a container from the image and then starts the root process on this container. Running it with run --rm
flag would save you the trouble of removing the useless dead container afterward and would allow you to ignore the existence of docker start
and docker remove
altogether.
run
command does a few different things:
docker run --name dname image_name bash -c "whoami"
docker ps
bash -c "whoami"
. If one runs docker run --name dname image_name
without a command to execute container would go into stopped state immediately. docker remove
before launching container under the same name.How to remove container once it is stopped automatically? Add an --rm
flag to run
command:
docker run --rm --name dname image_name bash -c "whoami"
How to execute multiple commands in a single container? By preventing that root process from dying. This can be done by running some useless command at start with --detached
flag and then using "execute" to run actual commands:
docker run --rm -d --name dname image_name tail -f /dev/null
docker exec dname bash -c "whoami"
docker exec dname bash -c "echo 'Nnice'"
Why do we need docker stop
then? To stop this lingering container that we launched in the previous snippet with the endless command tail -f /dev/null
.
Okay, so if later on down the line the issue is that you have a query that's greater than the allowable size (which may happen if it keeps growing) you're going to have to break it into chunks and execute the string values. So, let's say you have a stored procedure like the following:
CREATE PROCEDURE ExecuteMyHugeQuery
@SQL VARCHAR(MAX) -- 2GB size limit as stated by Martin Smith
AS
BEGIN
-- Now, if the length is greater than some arbitrary value
-- Let's say 2000 for this example
-- Let's chunk it
-- Let's also assume we won't allow anything larger than 8000 total
DECLARE @len INT
SELECT @len = LEN(@SQL)
IF (@len > 8000)
BEGIN
RAISERROR ('The query cannot be larger than 8000 characters total.',
16,
1);
END
-- Let's declare our possible chunks
DECLARE @Chunk1 VARCHAR(2000),
@Chunk2 VARCHAR(2000),
@Chunk3 VARCHAR(2000),
@Chunk4 VARCHAR(2000)
SELECT @Chunk1 = '',
@Chunk2 = '',
@Chunk3 = '',
@Chunk4 = ''
IF (@len > 2000)
BEGIN
-- Let's set the right chunks
-- We already know we need two chunks so let's set the first
SELECT @Chunk1 = SUBSTRING(@SQL, 1, 2000)
-- Let's see if we need three chunks
IF (@len > 4000)
BEGIN
SELECT @Chunk2 = SUBSTRING(@SQL, 2001, 2000)
-- Let's see if we need four chunks
IF (@len > 6000)
BEGIN
SELECT @Chunk3 = SUBSTRING(@SQL, 4001, 2000)
SELECT @Chunk4 = SUBSTRING(@SQL, 6001, (@len - 6001))
END
ELSE
BEGIN
SELECT @Chunk3 = SUBSTRING(@SQL, 4001, (@len - 4001))
END
END
ELSE
BEGIN
SELECT @Chunk2 = SUBSTRING(@SQL, 2001, (@len - 2001))
END
END
-- Alright, now that we've broken it down, let's execute it
EXEC (@Chunk1 + @Chunk2 + @Chunk3 + @Chunk4)
END
Suppose you have Vue project created with vue-cli (e.g. vue init webpack my-project). Go to project dir and run
npm install jquery --save
Open file build/webpack.base.conf.js
and add plugins
:
module.exports = {
plugins: [
new webpack.ProvidePlugin({
$: 'jquery',
jquery: 'jquery',
'window.jQuery': 'jquery',
jQuery: 'jquery'
})
]
...
}
Also at top of file add:
const webpack = require('webpack')
If you are using ESLint, open .eslintrc.js
and add next globals: {
module.exports = {
globals: {
"$": true,
"jQuery": true
},
...
Now you are ready to go. Use $ anywhere in your js.
NOTE You don't need to include expose loader or any other stuff to use this.
Originally from https://maketips.net/tip/223/how-to-include-jquery-into-vuejs
python2 and python3
it is good to use time module
import time
int(time.time())
1573708436
you can also use datetime module, but when you use strftime('%s'), but strftime convert time to your local time!
python2
from datetime import datetime
datetime.utcnow().strftime('%s')
python3
from datetime import datetime
datetime.utcnow().timestamp()
It is not possible to dynamically change the value of a file field, otherwise you could set it to "c:\yourfile" and steal files very easily.
However there are many solutions to a multi-upload system. I'm guessing that you're wanting to have a multi-select open dialog.
Perhaps have a look at http://www.plupload.com/ - it's a very flexible solution to multiple file uploads, and supports drop zones e.t.c.
Try the format syntax:
print ("{0}. {1} appears {2} times.".format(1, 'b', 3.1415))
Outputs:
1. b appears 3.1415 times.
The print function is called just like any other function, with parenthesis around all its arguments.
// Embarcadero C++ Builder
// convertion string to wstring
string str1 = "hello";
String str2 = str1; // typedef UnicodeString String; -> str2 contains now u"hello";
// convertion wstring to string
String str2 = u"hello";
string str1 = UTF8string(str2).c_str(); // -> str1 contains now "hello"
PTBNL's Answer is quite perfect for me. I make a little more for Windows user.
import time
import subprocess
def gitAdd(fileName, repoDir):
cmd = 'git add ' + fileName
pipe = subprocess.Popen(cmd, shell=True, cwd=repoDir,stdout = subprocess.PIPE,stderr = subprocess.PIPE )
(out, error) = pipe.communicate()
print out,error
pipe.wait()
return
def gitCommit(commitMessage, repoDir):
cmd = 'git commit -am "%s"'%commitMessage
pipe = subprocess.Popen(cmd, shell=True, cwd=repoDir,stdout = subprocess.PIPE,stderr = subprocess.PIPE )
(out, error) = pipe.communicate()
print out,error
pipe.wait()
return
def gitPush(repoDir):
cmd = 'git push '
pipe = subprocess.Popen(cmd, shell=True, cwd=repoDir,stdout = subprocess.PIPE,stderr = subprocess.PIPE )
(out, error) = pipe.communicate()
pipe.wait()
return
temp=time.localtime(time.time())
uploaddate= str(temp[0])+'_'+str(temp[1])+'_'+str(temp[2])+'_'+str(temp[3])+'_'+str(temp[4])
repoDir='d:\\c_Billy\\vfat\\Programming\\Projector\\billyccm' # your git repository , windows your need to use double backslash for right directory.
gitAdd('.',repoDir )
gitCommit(uploaddate, repoDir)
gitPush(repoDir)
This is how I toggle two div
s at the same time:
$('#login-form, #recover-password').toggle();
It works!
Underscore js solution
let samplLst = [{id:1,title:Lorem},{id:2,title:Ipsum}]
let sampleKey = _.findLastIndex(samplLst,{_id:2});
//result would be 1
console.log(samplLst[sampleKey])
//output - {id:2,title:Ipsum}
Some of the previous answers are not correct. They work for other widgets and views, but the documentation for the Spinner widget clearly states:
A spinner does not support item click events. Calling this method will raise an exception.
Better use OnItemSelectedListener() instead:
spinner.setOnItemSelectedListener(new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parentView, View selectedItemView, int position, long id) {
// your code here
}
@Override
public void onNothingSelected(AdapterView<?> parentView) {
// your code here
}
});
This works for me.
Note that onItemSelected method is also invoked when the view is being build, so you can consider putting it inside onCreate()
method call.
I came up with my own basic method which seems to work fine (so far). There's probably a dozen things some of the popular scripts address that I haven't thought of.
Note - This solution is fast and easy to implement but of course not great for performance. Definitely look into the new Intersection Observer as mentioned by Apoorv and explained by developers.google if performance is an issue.
The JQuery
$(window).scroll(function() {
$.each($('img'), function() {
if ( $(this).attr('data-src') && $(this).offset().top < ($(window).scrollTop() + $(window).height() + 100) ) {
var source = $(this).data('src');
$(this).attr('src', source);
$(this).removeAttr('data-src');
}
})
})
Sample html code
<div>
<img src="" data-src="pathtoyour/image1.jpg">
<img src="" data-src="pathtoyour/image2.jpg">
<img src="" data-src="pathtoyour/image3.jpg">
</div>
Explained
When the page is scrolled each image on the page is checked..
$(this).attr('data-src')
- if the image has the attribute data-src
and how far those images are from the bottom of the window..
$(this).offset().top < ($(window).scrollTop() + $(window).height() + 100)
adjust the + 100 to whatever you like (- 100 for example)
var source = $(this).data('src');
- gets the value of data-src=
aka the image url
$(this).attr('src', source);
- puts that value into the src=
$(this).removeAttr('data-src');
- removes the data-src attribute (so your browser doesn't waste resources messing with the images that have already loaded)
Adding To Existing Code
To convert your html, in an editor just search and replace src="
with src="" data-src="
Mutexes are useful in situations where you need to enforce exclusive access to a resource accross multiple processes, where a regular lock won't help since it only works accross threads.
I had the same problem, and my solution was to eliminate the line
android:screenOrientation="portrait"
and then add this in the activity:
if (android.os.Build.VERSION.SDK_INT < Build.VERSION_CODES.O) {
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
}
Try this:
$('#ddlCodes').change(function() {
var option = this.options[this.selectedIndex];
$('#txtEntry2').text($(option).text());
});
In addition to the above responses, it should be noted that there is, at least in theory, no restriction whatsoever as to what kind of resources are involved in a transaction.
Most of the time, it is just a database, or multiple distinct databases, but it is also conceivable that a printer takes part in a transaction, and can cause that transaction to fail, say in the event of a paper jam.
Here is a working CSS/small JS solution based on the answer of Sandeep Pal:
$(document).click(function (e)
{
if (!$("#noticeMenu").is(e.target) && $("#noticeMenu").has(e.target).length == 0)
{
$("#menu-toggle3").prop('checked', false);
}
});
Try it out by clicking the checkbox and then outside of the menu:
As documented in /usr/src/linux/Documentation/block/switching-sched.txt
, the I/O scheduler on any particular block device can be changed at runtime. There may be some latency as the previous scheduler's requests are all flushed before bringing the new scheduler into use, but it can be changed without problems even while the device is under heavy use.
# cat /sys/block/hda/queue/scheduler
noop deadline [cfq]
# echo anticipatory > /sys/block/hda/queue/scheduler
# cat /sys/block/hda/queue/scheduler
noop [deadline] cfq
Ideally, there would be a single scheduler to satisfy all needs. It doesn't seem to exist yet. The kernel often doesn't have enough knowledge to choose the best scheduler for your workload:
noop
is often the best choice for memory-backed block devices (e.g. ramdisks) and other non-rotational media (flash) where trying to reschedule I/O is a waste of resourcesdeadline
is a lightweight scheduler which tries to put a hard limit on latencycfq
tries to maintain system-wide fairness of I/O bandwidthThe default was anticipatory
for a long time, and it received a lot of tuning, but was removed in 2.6.33 (early 2010). cfq
became the default some while ago, as its performance is reasonable and fairness is a good goal for multi-user systems (and even single-user desktops). For some scenarios -- databases are often used as examples, as they tend to already have their own peculiar scheduling and access patterns, and are often the most important service (so who cares about fairness?) -- anticipatory
has a long history of being tunable for best performance on these workloads, and deadline
very quickly passes all requests through to the underlying device.
I figured there's no way except going into the file system to find out if text.txt is a directory or just a file. If you wanted something simple, maybe you can just use:
s.Substring(s.LastIndexOf(@"\"));
Fluid layout in Bootstrap 3.
Unlike Boostrap 2, Bootstrap 3 doesn't have a .container-fluid mixin to make a fluid container. The .container is a fixed width responsive grid layout. In a large screen, there are excessive white spaces in both sides of one's Web page content.
container-fluid
is added back in Bootstrap 3.1
A fluid grid layout uses all screen width and works better in large screen. It turns out that it is easy to create a fluid grid layout using Bootstrap 3 mixins. The following line makes a fluid responsive grid layout:
.container-fixed;
The .container-fixed mixin sets the content to the center of the screen and add paddings. It doesn't specifies a fixed page width.
Another approach is to use Eric Flowers' CSS style
.my-fluid-container {
padding-left: 15px;
padding-right: 15px;
margin-left: auto;
margin-right: auto;
}
Seaching for answer I couldn't find any to be easy and flexible at the same time, then I found the Spring Security Reference and I realized there are near to perfect solutions. AOP solutions often are the greatest ones for testing, and Spring provides it with @WithMockUser
, @WithUserDetails
and @WithSecurityContext
, in this artifact:
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-test</artifactId>
<version>4.2.2.RELEASE</version>
<scope>test</scope>
</dependency>
In most cases, @WithUserDetails
gathers the flexibility and power I need.
Basically you just need to create a custom UserDetailsService
with all the possible users profiles you want to test. E.g
@TestConfiguration
public class SpringSecurityWebAuxTestConfig {
@Bean
@Primary
public UserDetailsService userDetailsService() {
User basicUser = new UserImpl("Basic User", "[email protected]", "password");
UserActive basicActiveUser = new UserActive(basicUser, Arrays.asList(
new SimpleGrantedAuthority("ROLE_USER"),
new SimpleGrantedAuthority("PERM_FOO_READ")
));
User managerUser = new UserImpl("Manager User", "[email protected]", "password");
UserActive managerActiveUser = new UserActive(managerUser, Arrays.asList(
new SimpleGrantedAuthority("ROLE_MANAGER"),
new SimpleGrantedAuthority("PERM_FOO_READ"),
new SimpleGrantedAuthority("PERM_FOO_WRITE"),
new SimpleGrantedAuthority("PERM_FOO_MANAGE")
));
return new InMemoryUserDetailsManager(Arrays.asList(
basicActiveUser, managerActiveUser
));
}
}
Now we have our users ready, so imagine we want to test the access control to this controller function:
@RestController
@RequestMapping("/foo")
public class FooController {
@Secured("ROLE_MANAGER")
@GetMapping("/salute")
public String saluteYourManager(@AuthenticationPrincipal User activeUser)
{
return String.format("Hi %s. Foo salutes you!", activeUser.getUsername());
}
}
Here we have a get mapped function to the route /foo/salute and we are testing a role based security with the @Secured
annotation, although you can test @PreAuthorize
and @PostAuthorize
as well.
Let's create two tests, one to check if a valid user can see this salute response and the other to check if it's actually forbidden.
@RunWith(SpringRunner.class)
@SpringBootTest(
webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT,
classes = SpringSecurityWebAuxTestConfig.class
)
@AutoConfigureMockMvc
public class WebApplicationSecurityTest {
@Autowired
private MockMvc mockMvc;
@Test
@WithUserDetails("[email protected]")
public void givenManagerUser_whenGetFooSalute_thenOk() throws Exception
{
mockMvc.perform(MockMvcRequestBuilders.get("/foo/salute")
.accept(MediaType.ALL))
.andExpect(status().isOk())
.andExpect(content().string(containsString("[email protected]")));
}
@Test
@WithUserDetails("[email protected]")
public void givenBasicUser_whenGetFooSalute_thenForbidden() throws Exception
{
mockMvc.perform(MockMvcRequestBuilders.get("/foo/salute")
.accept(MediaType.ALL))
.andExpect(status().isForbidden());
}
}
As you see we imported SpringSecurityWebAuxTestConfig
to provide our users for testing. Each one used on its corresponding test case just by using a straightforward annotation, reducing code and complexity.
As you see @WithUserDetails
has all the flexibility you need for most of your applications. It allows you to use custom users with any GrantedAuthority, like roles or permissions. But if you are just working with roles, testing can be even easier and you could avoid constructing a custom UserDetailsService
. In such cases, specify a simple combination of user, password and roles with @WithMockUser.
@Target({ElementType.METHOD, ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
@Inherited
@Documented
@WithSecurityContext(
factory = WithMockUserSecurityContextFactory.class
)
public @interface WithMockUser {
String value() default "user";
String username() default "";
String[] roles() default {"USER"};
String password() default "password";
}
The annotation defines default values for a very basic user. As in our case the route we are testing just requires that the authenticated user be a manager, we can quit using SpringSecurityWebAuxTestConfig
and do this.
@Test
@WithMockUser(roles = "MANAGER")
public void givenManagerUser_whenGetFooSalute_thenOk() throws Exception
{
mockMvc.perform(MockMvcRequestBuilders.get("/foo/salute")
.accept(MediaType.ALL))
.andExpect(status().isOk())
.andExpect(content().string(containsString("user")));
}
Notice that now instead of the user [email protected] we are getting the default provided by @WithMockUser
: user; yet it won't matter because what we really care about is his role: ROLE_MANAGER
.
As you see with annotations like @WithUserDetails
and @WithMockUser
we can switch between different authenticated users scenarios without building classes alienated from our architecture just for making simple tests. Its also recommended you to see how @WithSecurityContext works for even more flexibility.
If you want to ensure keyboard events are fired, consider using sendKeys(CharSequence)
.
Example 1:
from selenium.webdriver.common.keys import Keys
# ...
webElement.sendKeys(Keys.CONTROL + "a");
webElement.sendKeys(Keys.DELETE);
Example 2:
from selenium.webdriver.common.keys import Keys
# ...
webElement.sendKeys(Keys.BACK_SPACE); //do repeatedly, e.g. in while loop
There are many ways to get the required WebElement, e.g.:
webElement.clear();
If this element is a text entry element, this will clear the value.
Note that the events fired by this event may not be as you'd expect. In particular, we don't fire any keyboard or mouse events.
First of all, a disclaimer. I don't really advocate for the solution I present below. The only browser specific CSS I write is for IE (especially IE6), although I wish it wasn't the case.
Now, the solution. You asked it to be elegant so I don't know how elegant is it but it's sure going to target Gecko platforms only.
The trick is only working when JavaScript is enabled and makes use of Mozilla bindings (XBL), which are heavily used internally in Firefox and all other Gecko-based products. For a comparison, this is like the behavior CSS property in IE, but much more powerful.
Three files are involved in my solution:
ff.html
<!DOCTYPE html>
<html>
<head>
<style type="text/css">
body {
-moz-binding: url(ff.xml#load-mozilla-css);
}
</style>
</head>
<body>
<h1>This should be red in FF</h1>
</body>
</html>
ff.xml
<?xml version="1.0"?>
<bindings xmlns="http://www.mozilla.org/xbl">
<binding id="load-mozilla-css">
<implementation>
<constructor>
<![CDATA[
var link = document.createElement("link");
link.setAttribute("rel", "stylesheet");
link.setAttribute("type", "text/css");
link.setAttribute("href", "ff.css");
document.getElementsByTagName("head")[0]
.appendChild(link);
]]>
</constructor>
</implementation>
</binding>
</bindings>
ff.css
h1 {
color: red;
}
Update: The above solution is not that good. It would be better if instead of appending a new LINK element it will add that "firefox" class on the BODY element. And it's possible, just by replacing the above JS with the following:
this.className += " firefox";
The solution is inspired by Dean Edwards' moz-behaviors.
Using Apache Commons IO.
import org.apache.commons.io.FileUtils;
//...
String contents = FileUtils.readFileToString(new File("/path/to/the/file"), "UTF-8")
You can see de javadoc for the method for details.
You can pass a variable on the line with the cmake invocation:
FOO=1 cmake
or by exporting a variable in BASH:
export FOO=1
Then you can pick it up in a cmake script using:
$ENV{FOO}
I'll explain it in a simple way.
Generics defined at Class level are completely separate from the generics defined at the (static) method level.
class Greet<T> {
public static <T> void sayHello(T obj) {
System.out.println("Hello " + obj);
}
}
When you see the above code anywhere, please note that the T defined at the class level has nothing to do with the T defined in the static method. The following code is also completely valid and equivalent to the above code.
class Greet<T> {
public static <E> void sayHello(E obj) {
System.out.println("Hello " + obj);
}
}
Why the static method needs to have its own generics separate from those of the Class?
This is because, the static method can be called without even instantiating the Class. So if the Class is not yet instantiated, we do not yet know what is T. This is the reason why the static methods needs to have its own generics.
So, whenever you are calling the static method,
Greet.sayHello("Bob");
Greet.sayHello(123);
JVM interprets it as the following.
Greet.<String>sayHello("Bob");
Greet.<Integer>sayHello(123);
Both giving the same outputs.
Hello Bob
Hello 123
As your query string is a literal, and assuming your dates are properly stored as DATE
you should use date literals:
SELECT * FROM OrderArchive
WHERE OrderDate <= DATE '2015-12-31'
If you want to use TO_DATE
(because, for example, your query value is not a literal), I suggest you to explicitly set the NLS_DATE_LANGUAGE parameter as you are using US abbreviated month names. That way, it won't break on some localized Oracle Installation:
SELECT * FROM OrderArchive
WHERE OrderDate <= to_date('31 Dec 2014', 'DD MON YYYY',
'NLS_DATE_LANGUAGE = American');
There are a lot of good answers here but I didn't find the one about using reduce
method. So for your case, you can apply it in following way:
List<Employee> employeeList = employees.stream()
.reduce(new ArrayList<>(), (List<Employee> accumulator, Employee employee) ->
{
if (accumulator.stream().noneMatch(emp -> emp.getId().equals(employee.getId())))
{
accumulator.add(employee);
}
return accumulator;
}, (acc1, acc2) ->
{
acc1.addAll(acc2);
return acc1;
});
If you want to display links coming from your state or store in Vue 2.0, you can do like this:
<a v-bind:href="''">
{{ url_link }}
</a>
By regex i think this is java, the method replaceAll()
returns a new String with the substrings replaced, so try this:
String teste = "abcd=0; efgh=1";
String teste2 = teste.replaceAll("abcd", "dddd");
System.out.println(teste2);
Output:
dddd=0; efgh=1
None of the answers here worked for me. What I had to do is:
After that it works fine.
Jenkins "boolean" parameters are really just a shortcut for the "choice parameter" type with the choices hardcoded to the strings "true" and "false", and with a checkbox to set the string variable. But in the end, it is just that: a string variable, with nothing to do with a true boolean. That's why you need to convert the string to a boolean if you don't want to do a string comparison like:
if (myBoolean == "true")
Check this: http://jsfiddle.net/h7kRt/1/,
you should change in jsfiddle on top-left to No-wrap in <head>
Your code looks good and it will work inside a normal page. In jsfiddle your function was being defined inside a load handler and thus is in a different scope. By changing to No-wrap you have it in the global scope and can use it as you wanted.
I know it's an old thread, but I still think it's worth to answer it.
select (
SELECT COLUMN FROM MY_TABLE WHERE ....
) into v_column
from dual;
Example of use:
declare v_column VARCHAR2(100);
begin
select (SELECT TABLE_NAME FROM ALL_TABLES WHERE TABLE_NAME = 'DOES NOT EXIST')
into v_column
from dual;
DBMS_OUTPUT.PUT_LINE('v_column=' || v_column);
end;
As said in documentation here
Raised buttons have a minimum size of 88.0 by 36.0 which can be overidden with ButtonTheme.
You can do it like that
ButtonTheme(
minWidth: 200.0,
height: 100.0,
child: RaisedButton(
onPressed: () {},
child: Text("test"),
),
);
I can't claim credit for this image, but it matches everything I know on this subject and offers a bit of humor at the same time.
This code will store the image in database.
$('#image').change(function(){
// FileReader function for read the file.
let reader = new FileReader();
var base64;
reader.readAsDataURL(this.files[0]);
//Read File
let filereader = new FileReader();
var selectedFile = this.files[0];
// Onload of file read the file content
filereader.onload = function(fileLoadedEvent) {
base64 = fileLoadedEvent.target.result;
$("#pimage").val(JSON.stringify(base64));
};
filereader.readAsDataURL(selectedFile);
});
HTML content should be like this.
<div class="col-xs-12 col-sm-4 col-md-4 user_frm form-group">
<input id="image" type="file" class="inputMaterial" name="image">
<input type="hidden" id="pimage" name="pimage" value="">
<span class="bar"></span>
</div>
Store image data in database like this:
//property_image longtext(database field type)
$data= array(
'property_image' => trim($request->get('pimage'),'"')
);
Display image:
<img src="{{$result->property_image}}" >
Can't be done as it stands... The code
def myMethod(pParm1='1', pParm2='2'){
println "${pParm1}${pParm2}"
}
Basically makes groovy create the following methods:
Object myMethod( pParm1, pParm2 ) {
println "$pParm1$pParm2"
}
Object myMethod( pParm1 ) {
this.myMethod( pParm1, '2' )
}
Object myMethod() {
this.myMethod( '1', '2' )
}
One alternative would be to have an optional Map as the first param:
def myMethod( Map map = [:], String mandatory1, String mandatory2 ){
println "${mandatory1} ${mandatory2} ${map.parm1 ?: '1'} ${map.parm2 ?: '2'}"
}
myMethod( 'a', 'b' ) // prints 'a b 1 2'
myMethod( 'a', 'b', parm1:'value' ) // prints 'a b value 2'
myMethod( 'a', 'b', parm2:'2nd') // prints 'a b 1 2nd'
Obviously, documenting this so other people know what goes in the magical map
and what the defaults are is left to the reader ;-)
You can see the complete list of MySQL server options by running
mysqld --verbose --help
For example, to find out the path to the data directory on Linux, you can run:
mysqld --verbose --help | grep ^datadir
Example output:
datadir /var/lib/mysql/
I searched a lot about restful ws security and we also ended up with using token via cookie from client to server to authenticate the requests . I used spring security for authorization of requests in service because I had to authenticate and authorized each request based on specified security policies that has already been in DB.
If you are in a browser environment you can also use btoa.
btoa
is a function which takes a string as argument and produces a Base64 encoded ASCII string. Its supported by 97% of browsers.
Example:
> "Basic " + btoa("billy"+":"+"secretpassword")
< "Basic YmlsbHk6c2VjcmV0cGFzc3dvcmQ="
You can then add Basic YmlsbHk6c2VjcmV0cGFzc3dvcmQ=
to the authorization
header.
Note that the usual caveats about HTTP BASIC auth apply, most importantly if you do not send your traffic over https an eavesdropped can simply decode the Base64 encoded string thus obtaining your password.
This security.stackexchange.com answer gives a good overview of some of the downsides.
An operating system provides a GUI (and CLI) that you can interact with. It also provides an API that you can interact with programmatically.
Similarly, a website provides HTML pages that you can interact with and may also provide an API that offers the same information and operations programmatically. Or those services may only be available via an API with no associated user interface.
Steps:
Go to conf
folder of your apache tomcat server. In my case,its apache-tomcat-7.0.61\conf
as I am using apache-tomcat-7.0.61
Open server.xml
and change the port number from 8080 to any other port as your wish. For example:8081,8082,8087 etc
Now go to bin
folder and run shutdown.bat
Now restart the server through eclipse.
Now your project will work without any interruption.
I use a for loop to iterate the string and use charAt()
to get each character to examine it. Since the String is implemented with an array, the charAt()
method is a constant time operation.
String s = "...stuff...";
for (int i = 0; i < s.length(); i++){
char c = s.charAt(i);
//Process char
}
That's what I would do. It seems the easiest to me.
As far as correctness goes, I don't believe that exists here. It is all based on your personal style.
I used the code below, and it works
'PHONE' => 'required|regex:/(0)[0-9]/|not_regex:/[a-z]/|min:9',
<div class="container">
<div class="row">
<div class="col-md-3 col-sm-6 col-xs-12"></div>enter code here
<div class="col-md-6 col-sm-6 col-xs-12">
<div class="msg"></div>
<form method="post" class="frm" id="form1" onsubmit="">
<div class="form-group">
<input type="text" class="form-control" name="fname" id="fname" placeholder="enter your first neme" required>
<!--><span class="sp"><?php// echo $f_err;?></span><!-->
</div>
<div class="form-group">
<input type="text" class="form-control" name="lname" id="lname" placeholder="enter your last neme" required>
<!--><span class="sp"><?php// echo $l_err;?></span><!-->
</div>
<div class="form-group">
<input type="text" class="form-control" name="email" id="email" placeholder="enter your email Address" required>
<!--><span class="sp"><?php// echo $e_err;?></span><!-->
</div>
<div class="form-group">
<input type="number" class="form-control" name="mno" id="mno" placeholder="enter your mobile number" required>
<!--><span class="sp"><?php //echo $m_err;?></span><!-->
</div>
<div class="form-group">
<input type="password" class="form-control" name="pass" id="pass" pattern="(?=.*[a-z])(?=.*[A-Z]).{4,8}" placeholder="enter your Password" required>
<!--><span class="sp"><?php //echo $p_err;?></span><!-->
</div>
<div class="radio">
<input type="radio" value="male" name="gender" id="gender" checked>male<br>
<input type="radio" value="female" name="gender" id="gender">female<br>
<input type="radio" value="other" name="gender" id="gender">other<br>
<!--><span class="sp"> <?php //echo $r_err;?></span><!-->
</div>
<div class="checkbox">
<input type="checkbox" name="check" id="check" checked>I Agree Turms&Condition<br>
<!--><span class="sp"> <?php //echo $c_err;?></span><!-->
</div>
<input type="submit" class="btn btn-warning" name="submit" id="submit">
</form>enter code here
</div>
<div class="col-md-3 col-sm-6 col-xs-12"></div>
</div>
</div>
What you’re looking for is the CSS Sticky Footer.
* {_x000D_
margin: 0;_x000D_
padding: 0;_x000D_
}_x000D_
_x000D_
html,_x000D_
body {_x000D_
height: 100%;_x000D_
}_x000D_
_x000D_
#wrap {_x000D_
min-height: 100%;_x000D_
}_x000D_
_x000D_
#main {_x000D_
overflow: auto;_x000D_
padding-bottom: 180px;_x000D_
/* must be same height as the footer */_x000D_
}_x000D_
_x000D_
#footer {_x000D_
position: relative;_x000D_
margin-top: -180px;_x000D_
/* negative value of footer height */_x000D_
height: 180px;_x000D_
clear: both;_x000D_
background-color: red;_x000D_
}_x000D_
_x000D_
_x000D_
/* Opera Fix thanks to Maleika (Kohoutec) */_x000D_
_x000D_
body:before {_x000D_
content: "";_x000D_
height: 100%;_x000D_
float: left;_x000D_
width: 0;_x000D_
margin-top: -32767px;_x000D_
/* thank you Erik J - negate effect of float*/_x000D_
}
_x000D_
<div id="wrap">_x000D_
<div id="main"></div>_x000D_
</div>_x000D_
_x000D_
<div id="footer"></div>
_x000D_
I think there are some compiler errors.
missing semicolon at the end of a line
double a, b;
Console.WriteLine("istenen sayiyi sonuna .00 koyarak yaz");
a = double.Parse(Console.ReadLine());
b = a * Math.PI; // Missing colon!
Console.WriteLine("Sonuç " + b);
m
- for classes that set margin, like this :
mt
- for classes that set margin-top
mb
- for classes that set margin-bottom
ml
- for classes that set margin-left
mr
- for classes that set margin-right
mx
- for classes that set both margin-left
and margin-right
my
- for classes that set both margin-top
and margin-bottom
Where size is one of margin :
0
- for classes that eliminate the margin by setting it to
0, like mt-0
1
- (by default) for classes that set the margin to
$spacer * .25, like mt-1
2
- (by default) for classes that set the margin to
$spacer * .5, like mt-2
3
- (by default) for classes that set the margin to
$spacer, like mt-3
4
- (by default) for classes that set the margin to
$spacer * 1.5, like mt-4
5
- (by default) for classes that set the margin to $spacer * 3, like mt-5
auto
- for classes that set the margin to auto, like mx-auto
Just get Far Manager and search through for the old name. Then manually (in Far Manager) replace everywhere. Sadly, this is the only method that works in 100% of the possible cases.
Implemented with swift on Xcode 6.1
self.tableView.tableFooterView = UIView(frame: CGRectZero)
self.tableView.tableFooterView?.hidden = true
The second line of code does not cause any effect on presentation, you can use to check if is hidden or not.
Answer taken from this link Fail to hide empty cells in UITableView Swift
Tried couple of ways discussed above and end up with following working solution, just copy and paste in your editor to try. To test just change hash to inbox, outbox, compose in url and hit enter key.
<html>
<head>
<link type='text/css' rel='stylesheet' href='https://maxcdn.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css' />
<script src="https://code.jquery.com/jquery-2.2.0.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.0.0/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container body-content">
<ul class="nav nav-tabs">
<li class="active"><a data-toggle="tab" href="#inbox">Inbox</a></li>
<li><a data-toggle="tab" href="#outbox">Outbox</a></li>
<li><a data-toggle="tab" href="#compose">Compose</a></li>
</ul>
<div class="tab-content">
<div id="inbox" class="tab-pane fade in active">
Inbox Content
</div>
<div id="outbox" class="tab-pane fade">
Outbox Content
</div>
<div id="compose" class="tab-pane fade">
Compose Content
</div>
</div>
</div>
<script>
$(function () {
var hash = window.location.hash;
hash && $('ul.nav a[href="' + hash + '"]').tab('show');
});
</script>
</body>
</html>
Hope this will save your time.
Since I can't comment to a few answers due to less reputation, I will post a solution which I applied.
for(String key : someArray)
{
if(hashMap.containsKey(key)//will check if a particular key exist or not
{
hashMap.put(hashMap.get(key),value+1);// increment the value by 1 to an already existing key
}
else
{
hashMap.put(key,value);// make a new entry into the hashmap
}
}
Since it's a long time and people keep suggesting to use Scanner#nextLine()
, there's another chance that Scanner
can take spaces included in input.
A Scanner breaks its input into tokens using a delimiter pattern, which by default matches whitespace.
You can use Scanner#useDelimiter()
to change the delimiter of Scanner
to another pattern such as a line feed
or something else.
Scanner in = new Scanner(System.in);
in.useDelimiter("\n"); // use LF as the delimiter
String question;
System.out.println("Please input question:");
question = in.next();
// TODO do something with your input such as removing spaces...
if (question.equalsIgnoreCase("howdoyoulikeschool?") )
/* it seems strings do not allow for spaces */
System.out.println("CLOSED!!");
else
System.out.println("Que?");
I think this may have been a conscious design choice to force developers to create functions whose names clearly communicate their intentions. In C++ developers would overload operators with functionality that would often have no relation to the commonly accepted nature of the given operator, making it nearly impossible to determine what a piece of code does without looking at the definition of the operator.
The fact that your method does not use the self
argument (which is a reference to the instance that the method is attached to) doesn't mean you can leave it out. It always has to be there, because Python is always going to try to pass it in.
If you are working in Ubuntu,follow the steps:
/
and type word to search*
key#
key The ad-hoc profile doesn't support debugging. You need to debug with a Development profile, and use the Ad-Hoc profile only for distributing non-debuggable copies.
Try using for Clean XSS
xss_clean($data): "><script>alert(String.fromCharCode(74,111,104,116,111,32,82,111,98,98,105,101))</script>
Here is a simple way to get substring in Swift
import UIKit
var str = "Hello, playground"
var res = NSString(string: str)
print(res.substring(from: 4))
print(res.substring(to: 10))
You need to use:
await client.PostAsync(uri, content);
Something like that:
var comment = "hello world";
var questionId = 1;
var formContent = new FormUrlEncodedContent(new[]
{
new KeyValuePair<string, string>("comment", comment),
new KeyValuePair<string, string>("questionId", questionId)
});
var myHttpClient = new HttpClient();
var response = await myHttpClient.PostAsync(uri.ToString(), formContent);
And if you need to get the response after post, you should use:
var stringContent = await response.Content.ReadAsStringAsync();
Hope it helps ;)
Because 1
is numeric, but not integer (i.e. it's a floating point number), and 1:6000
is numeric and integer.
> print(class(1))
[1] "numeric"
> print(class(1:60000))
[1] "integer"
60000 squared is 3.6 billion, which is NOT representable in signed 32-bit integer, hence you get an overflow error:
> as.integer(60000)*as.integer(60000)
[1] NA
Warning message:
In as.integer(60000) * as.integer(60000) : NAs produced by integer overflow
3.6 billion is easily representable in floating point, however:
> as.single(60000)*as.single(60000)
[1] 3.6e+09
To fix your for
code, convert to a floating point representation:
function (N)
{
for(i in as.single(1:N)) {
y <- i*i
}
}
Try not closing the connection before you send data to your database. Remove client.close();
from your code and it'll work fine.
It worked for me.
$f=fopen('php://memory','w');
$header=array("asdf ","asdf","asd","Calasdflee","Start Time","End Time" );
fputcsv($f,$header);
fputcsv($f,$header);
fputcsv($f,$header);
fseek($f,0);
header('content-type:text/csv');
header('Content-Disposition: attachment; filename="' . $filename . '";');
fpassthru($f);```
Try
sudo -su db2inst1 /opt/ibm/db2/V9.7/bin/db2 force application \(1995\)
import csv
mycsv = csv.reader(open(myfilepath))
for row in mycsv:
text = row[1]
Following the comments to the SO question here, a best, more robust code would be:
import csv
with open(myfilepath, 'rb') as f:
mycsv = csv.reader(f)
for row in mycsv:
text = row[1]
............
Update: If what the OP actually wants is the last string in the last row of the csv file, there are several aproaches that not necesarily needs csv. For example,
fulltxt = open(mifilepath, 'rb').read()
laststring = fulltxt.split(',')[-1]
This is not good for very big files because you load the complete text in memory but could be ok for small files. Note that laststring
could include a newline character so strip it before use.
And finally if what the OP wants is the second string in line n (for n=2):
Update 2: This is now the same code than the one in the answer from J.F.Sebastian. (The credit is for him):
import csv
line_number = 2
with open(myfilepath, 'rb') as f:
mycsv = csv.reader(f)
mycsv = list(mycsv)
text = mycsv[line_number][1]
............
Response.Write("<script> try {this.submit();} catch(e){} </script>");
I think the answer is pretty simple (unless I'm missing something?)
SELECT
CASE
WHEN col1 > col2 THEN SUM(col3*col4)
ELSE 0
END AS some_product
FROM some_table
GROUP BY
CASE
WHEN col1 > col2 THEN SUM(col3*col4)
ELSE 0
END
You can put the CASE STATEMENT in the GROUP BY verbatim (minus the alias column name)
You can disable SSL certificate checking by adding one or more of these command line parameters:
-Dmaven.wagon.http.ssl.insecure=true
- enable use of relaxed SSL check for user generated certificates.-Dmaven.wagon.http.ssl.allowall=true
- enable match of the server's X.509 certificate with hostname. If disabled, a browser like check will be used.-Dmaven.wagon.http.ssl.ignore.validity.dates=true
- ignore issues with certificate dates.Official documentation: http://maven.apache.org/wagon/wagon-providers/wagon-http/
Here's the oneliner for an easy copy-and-paste:
-Dmaven.wagon.http.ssl.insecure=true -Dmaven.wagon.http.ssl.allowall=true -Dmaven.wagon.http.ssl.ignore.validity.dates=true
Ajay Gautam suggested that you could also add the above to the ~/.mavenrc
file as not to have to specify it every time at command line:
$ cat ~/.mavenrc
MAVEN_OPTS="-Dmaven.wagon.http.ssl.insecure=true -Dmaven.wagon.http.ssl.allowall=true -Dmaven.wagon.http.ssl.ignore.validity.dates=true"
Here is a complete AsyncTask
class
public class GetMethodDemo extends AsyncTask<String , Void ,String> {
String server_response;
@Override
protected String doInBackground(String... strings) {
URL url;
HttpURLConnection urlConnection = null;
try {
url = new URL(strings[0]);
urlConnection = (HttpURLConnection) url.openConnection();
int responseCode = urlConnection.getResponseCode();
if(responseCode == HttpURLConnection.HTTP_OK){
server_response = readStream(urlConnection.getInputStream());
Log.v("CatalogClient", server_response);
}
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
Log.e("Response", "" + server_response);
}
}
// Converting InputStream to String
private String readStream(InputStream in) {
BufferedReader reader = null;
StringBuffer response = new StringBuffer();
try {
reader = new BufferedReader(new InputStreamReader(in));
String line = "";
while ((line = reader.readLine()) != null) {
response.append(line);
}
} catch (IOException e) {
e.printStackTrace();
} finally {
if (reader != null) {
try {
reader.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return response.toString();
}
To Call this AsyncTask
class
new GetMethodDemo().execute("your web-service url");
In your request options, try including the following:
var req = https.request({
host: '192.168.1.1',
port: 443,
path: '/',
method: 'GET',
rejectUnauthorized: false,
requestCert: true,
agent: false
},
using System.IO;
...
foreach (string file in Directory.EnumerateFiles(folderPath, "*.xml"))
{
string contents = File.ReadAllText(file);
}
Note the above uses a .NET 4.0 feature; in previous versions replace EnumerateFiles
with GetFiles
). Also, replace File.ReadAllText
with your preferred way of reading xml files - perhaps XDocument
, XmlDocument
or an XmlReader
.
Once you have cloned the repo, you have everything: you can then hg up branchname
or hg up tagname
to update your working copy.
UP: hg up
is a shortcut of hg update
, which also has hg checkout
alias for people with git
habits.
You can use the function toprettyxml()
from xml.dom.minidom
in order to do that:
def prettify(elem):
"""Return a pretty-printed XML string for the Element.
"""
rough_string = ElementTree.tostring(elem, 'utf-8')
reparsed = minidom.parseString(rough_string)
return reparsed.toprettyxml(indent="\t")
The idea is to print your Element
in a string, parse it using minidom and convert it again in XML using the toprettyxml
function.
Source: http://pymotw.com/2/xml/etree/ElementTree/create.html
This solution has left aligned text and button on the far right.
If anyone is looking for a material design answer:
<div layout="column" layout-align="start start">
<div layout="row" style="width:100%">
<div flex="grow">Left Aligned text</div>
<md-button aria-label="help" ng-click="showHelpDialog()">
<md-icon md-svg-icon="help"></md-icon>
</md-button>
</div>
</div>
Edit: Sorry, this won't work for you. I just remembered the line color thing is in 4.2. I ran into this problem in the past and my fix was to upgrade gnuplot.
You can control the color with set style line as well. "lt 3" will give you a dashed line while "lt 1" will give you a solid line. To add color, you can use "lc rgb 'color'". This should do what you need:
set style line 1 lt 1 lw 3 pt 3 lc rgb "red"
set style line 2 lt 3 lw 3 pt 3 lc rgb "red"
set style line 3 lt 1 lw 3 pt 3 lc rgb "blue"
set style line 4 lt 3 lw 3 pt 3 lc rgb "blue"
Use sp_helptext
before the view_name
. Example:
sp_helptext Example_1
Hence you will get the query:
CREATE VIEW dbo.Example_1
AS
SELECT a, b, c
FROM dbo.table_name JOIN blah blah blah
WHERE blah blah blah
sp_helptext will give stored procedures.
Another reason why an undefined index notice will be thrown, would be that a column was omitted from a database query.
I.e.:
$query = "SELECT col1 FROM table WHERE col_x = ?";
Then trying to access more columns/rows inside a loop.
I.e.:
print_r($row['col1']);
print_r($row['col2']); // undefined index thrown
or in a while
loop:
while( $row = fetching_function($query) ) {
echo $row['col1'];
echo "<br>";
echo $row['col2']; // undefined index thrown
echo "<br>";
echo $row['col3']; // undefined index thrown
}
Something else that needs to be noted is that on a *NIX OS and Mac OS X, things are case-sensitive.
Consult the followning Q&A's on Stack:
moment.utc(date).format(...);
is the way to go, since
moment().utc(date).format(...);
does behave weird...
Given possible x values, xs
, (think of them as the tick-marks on the x-axis of a plot) and possible y values, ys
, meshgrid
generates the corresponding set of (x, y) grid points---analogous to set((x, y) for x in xs for y in yx)
. For example, if xs=[1,2,3]
and ys=[4,5,6]
, we'd get the set of coordinates {(1,4), (2,4), (3,4), (1,5), (2,5), (3,5), (1,6), (2,6), (3,6)}
.
However, the representation that meshgrid
returns is different from the above expression in two ways:
First, meshgrid
lays out the grid points in a 2d array: rows correspond to different y-values, columns correspond to different x-values---as in list(list((x, y) for x in xs) for y in ys)
, which would give the following array:
[[(1,4), (2,4), (3,4)],
[(1,5), (2,5), (3,5)],
[(1,6), (2,6), (3,6)]]
Second, meshgrid
returns the x and y coordinates separately (i.e. in two different numpy 2d arrays):
xcoords, ycoords = (
array([[1, 2, 3],
[1, 2, 3],
[1, 2, 3]]),
array([[4, 4, 4],
[5, 5, 5],
[6, 6, 6]]))
# same thing using np.meshgrid:
xcoords, ycoords = np.meshgrid([1,2,3], [4,5,6])
# same thing without meshgrid:
xcoords = np.array([xs] * len(ys)
ycoords = np.array([ys] * len(xs)).T
Note, np.meshgrid
can also generate grids for higher dimensions. Given xs, ys, and zs, you'd get back xcoords, ycoords, zcoords as 3d arrays. meshgrid
also supports reverse ordering of the dimensions as well as sparse representation of the result.
Why would we want this form of output?
Apply a function at every point on a grid:
One motivation is that binary operators like (+, -, *, /, **) are overloaded for numpy arrays as elementwise operations. This means that if I have a function def f(x, y): return (x - y) ** 2
that works on two scalars, I can also apply it on two numpy arrays to get an array of elementwise results: e.g. f(xcoords, ycoords)
or f(*np.meshgrid(xs, ys))
gives the following on the above example:
array([[ 9, 4, 1],
[16, 9, 4],
[25, 16, 9]])
Higher dimensional outer product: I'm not sure how efficient this is, but you can get high-dimensional outer products this way: np.prod(np.meshgrid([1,2,3], [1,2], [1,2,3,4]), axis=0)
.
Contour plots in matplotlib: I came across meshgrid
when investigating drawing contour plots with matplotlib for plotting decision boundaries. For this, you generate a grid with meshgrid
, evaluate the function at each grid point (e.g. as shown above), and then pass the xcoords, ycoords, and computed f-values (i.e. zcoords) into the contourf function.
To install graphviz,
conda install -c anaconda graphviz
pip install graphviz
If conda command not found. Follow these:
export PATH=~/anaconda/bin:$PATH
conda --version # to check your conda version
Difference between conda and pip installation,
refer this stackoverflow answer
Yes, there is (see link in Matt Hamilton's comment), but it would be easier and better to use .NET's IO classes. You can use File.ReadAllBytes to read the files and then File.WriteAllBytes to write the "embedded" version.
I was also facing same kind of problem on my Macbook Pro. I took these very simple steps and freshly installed Android Studio.
** Link Contains Images, look if facing any problem.
These Very Simple Steps Can Solve Your Problem.
Go to:
Files -> Settings -> Project -> *"Your Project Name"* -> Project Interpreter
There you can see which external libraries you have installed for python2 and which for python3.
Select the required python version according to your requirements.
A cute piece of numerical weirdness may be observed if one converts 9999999.4999999999 to a float
and back to a double
. The result is reported as 10000000, even though that value is obviously closer to 9999999, and even though 9999999.499999999 correctly rounds to 9999999.
For an easy workaround, just copy the HTML file to some cloud share, such as Dropbox, and use the shared link in your browser. Easy.
You can use the following steps:
Step 1: Create a requirements.txt with list of packages to be installed. If you want to copy packages in a particular environment, do this
pip freeze >> requirements.txt
else store package names in a file named requirements.txt
Step 2: Execute pip command with this file
pip install -r requirements.txt
No CSS required, visible class should like this: visible-md-block
not just visible-md
and the code should be like this:
<div class="containerdiv hidden-sm hidden-xs visible-md-block visible-lg-block">
<div class="row">
<div class="col-xs-4 col-sm-4 col-md-4 col-lg-4 logo">
</div>
</div>
</div>
<div class="mobile hidden-md hidden-lg ">
test
</div>
Extra css is not required at all.
You need to tell the query what value to pick for the other columns, MIN
or MAX
seem like suitable choices.
SELECT
U.NAME, MIN(P.PIC_ID)
FROM
USERS U,
PICTURES P,
POSTINGS P1
WHERE
U.EMAIL_ID = P1.EMAIL_ID AND
P1.PIC_ID = P.PIC_ID AND
P.CAPTION LIKE '%car%'
GROUP BY
U.NAME;
why not just pass an data an object with your key/value pairs then you don't have to worry about encoding
$.ajax({
type: "Post",
url: "getdata.php",
data:{
timestamp: timestamp,
uid: id,
uname: name
},
async: true,
cache: false,
success: function(data) {
};
}?);?
Another example is:
$(".myClass").on("click", function () {
var $this = $(this);
if ($this.hasClass("show") {
$this.removeClass("show");
} else {
$this.addClass("show");
}
});
myFile = open('today','r')
ips = {}
for line in myFile:
parts = line.split()
if parts[1] == 'Failure':
ips.setdefault(parts[0], 0)
ips[parts[0]] += 1
of = open('failed.py', 'w')
for ip in [k for k, v in ips.iteritems() if v >=5]:
of.write(k+'\n')
Check out setdefault, it makes the code a little more legible. Then you dump your data with the file object's write method.
You can write to files with streams.
Just do it like this:
const fs = require('fs');
const stream = fs.createWriteStream('./test.txt');
stream.write("Example text");
sudo diskutil unmount force PATH
Works every time :)
Notice the force
tag
npm i -g npm
Update available 4.5.0 ? 4.6.1 ¦
¦ Run npm i -g npm to update
this is what npm recommends when in terminal, second piece is directly copied and pasted from my terminal
note: im using a mac
git clone git://github.com/ryanb/railscasts-episodes.git
The interface however defines the size() method, which returns an int.
Returns the number of elements in this list. If this list contains more than Integer.MAX_VALUE elements, returns Integer.MAX_VALUE.
So, no limit, but after you reach Integer.MAX_VALUE, the behaviour of the list changes a bit
ArrayList (which is tagged) is backed by an array, and is limited to the size of the array - i.e. Integer.MAX_VALUE
First of all you should get JdK 8.
if you have Jdk installed.
you should set its path using cmd prompt or system variables.
sometimes it can happen that the path is not set due to which eclipse is unable to get the properties for jdk.
Installing latest ecipse luna can solve your problem.
i have indigo and luna. i can set 1.8 in luna but 1.7 in indigo.Eclipse luna
You can check the eclipse site. it says that the eclipse luna was certainly to associate the properties for jdk 8.
I'm new to python too. Here is something that looks like will do what you want to
axes([0.08, 0.08, 0.94-0.08, 0.94-0.08]) #[left, bottom, width, height]
axis('scaled')`
I believe this decides the size of the canvas.
You have to call the super.paintComponent();
as well, to allow the Java API draw the original background. The super refers to the original JPanel code.
public void paintComponent(Graphics g){
super.paintComponent(g);
g.setColor(Color.red);
g.fillOval(player.getxCenter(), player.getyCenter(), player.getRadius(), player.getRadius());
}
I have redesigned the code for phone numbers +9 (987) 124124 Extract digits from a string in Java
public static String stripNonDigitsV2( CharSequence input ) {
if (input == null)
return null;
if ( input.length() == 0 )
return "";
char[] result = new char[input.length()];
int cursor = 0;
CharBuffer buffer = CharBuffer.wrap( input );
int i=0;
while ( i< buffer.length() ) { //buffer.hasRemaining()
char chr = buffer.get(i);
if (chr=='u'){
i=i+5;
chr=buffer.get(i);
}
if ( chr > 39 && chr < 58 )
result[cursor++] = chr;
i=i+1;
}
return new String( result, 0, cursor );
}
There are several detail levels you can get when looking at OpenPGP key data: a basic summary, a machine-readable output of this summary or a detailed (and very technical) list of the individual OpenPGP packets.
For a brief peak at an OpenPGP key file, you can simply pass the filename as parameter or pipe in the key data through STDIN. If no command is passed, GnuPG tries to guess what you want to do -- and for key data, this is printing a summary on the key:
$ gpg a4ff2279.asc
gpg: WARNING: no command supplied. Trying to guess what you mean ...
pub rsa8192 2012-12-25 [SC]
0D69E11F12BDBA077B3726AB4E1F799AA4FF2279
uid Jens Erat (born 1988-01-19 in Stuttgart, Germany)
uid Jens Erat <[email protected]>
uid Jens Erat <[email protected]>
uid Jens Erat <[email protected]>
uid Jens Erat <[email protected]>
uid [jpeg image of size 12899]
sub rsa4096 2012-12-26 [E] [revoked: 2014-03-26]
sub rsa4096 2012-12-26 [S] [revoked: 2014-03-26]
sub rsa2048 2013-01-23 [S] [expires: 2023-01-21]
sub rsa2048 2013-01-23 [E] [expires: 2023-01-21]
sub rsa4096 2014-03-26 [S] [expires: 2020-09-03]
sub rsa4096 2014-03-26 [E] [expires: 2020-09-03]
sub rsa4096 2014-11-22 [A] [revoked: 2016-03-01]
sub rsa4096 2016-02-24 [A] [expires: 2020-02-23]
By setting --keyid-format 0xlong
, long key IDs are printed instead of the insecure short key IDs:
$ gpg a4ff2279.asc
gpg: WARNING: no command supplied. Trying to guess what you mean ...
pub rsa8192/0x4E1F799AA4FF2279 2012-12-25 [SC]
0D69E11F12BDBA077B3726AB4E1F799AA4FF2279
uid Jens Erat (born 1988-01-19 in Stuttgart, Germany)
uid Jens Erat <[email protected]>
uid Jens Erat <[email protected]>
uid Jens Erat <[email protected]>
uid Jens Erat <[email protected]>
uid [jpeg image of size 12899]
sub rsa4096/0x0F3ED8E6759A536E 2012-12-26 [E] [revoked: 2014-03-26]
sub rsa4096/0x2D6761A7CC85941A 2012-12-26 [S] [revoked: 2014-03-26]
sub rsa2048/0x9FF7E53ACB4BD3EE 2013-01-23 [S] [expires: 2023-01-21]
sub rsa2048/0x5C88F5D83E2554DF 2013-01-23 [E] [expires: 2023-01-21]
sub rsa4096/0x8E78E44DFB1B55E9 2014-03-26 [S] [expires: 2020-09-03]
sub rsa4096/0xCC73B287A4388025 2014-03-26 [E] [expires: 2020-09-03]
sub rsa4096/0x382D23D4C9773A5C 2014-11-22 [A] [revoked: 2016-03-01]
sub rsa4096/0xFF37A70EDCBB4926 2016-02-24 [A] [expires: 2020-02-23]
pub rsa1024/0x7F60B22EA4FF2279 2014-06-16 [SCEA] [revoked: 2016-08-16]
Providing -v
or -vv
will even add some more information. I prefer printing the package details in this case, though (see below).
GnuPG also has a colon-separated output format, which is easily parsable and has a stable format. The format is documented in GnuPG doc/DETAILS
file. The option to receive this format is --with-colons
.
$ gpg --with-colons a4ff2279.asc
gpg: WARNING: no command supplied. Trying to guess what you mean ...
pub:-:8192:1:4E1F799AA4FF2279:1356475387:::-:
uid:::::::::Jens Erat (born 1988-01-19 in Stuttgart, Germany):
uid:::::::::Jens Erat <[email protected]>:
uid:::::::::Jens Erat <[email protected]>:
uid:::::::::Jens Erat <[email protected]>:
uid:::::::::Jens Erat <[email protected]>:
uat:::::::::1 12921:
sub:-:4096:1:0F3ED8E6759A536E:1356517233:1482747633:::
sub:-:4096:1:2D6761A7CC85941A:1356517456:1482747856:::
sub:-:2048:1:9FF7E53ACB4BD3EE:1358985314:1674345314:::
sub:-:2048:1:5C88F5D83E2554DF:1358985467:1674345467:::
sub:-:4096:1:8E78E44DFB1B55E9:1395870592:1599164118:::
sub:-:4096:1:CC73B287A4388025:1395870720:1599164118:::
sub:-:4096:1:382D23D4C9773A5C:1416680427:1479752427:::
sub:-:4096:1:FF37A70EDCBB4926:1456322829:1582466829:::
Since GnuPG 2.1.23, the gpg: WARNING: no command supplied. Trying to guess what you mean ...
warning can be omitted by using the --import-options show-only
option together with the --import
command (this also works without --with-colons
, of course):
$ gpg --with-colons --import-options show-only --import a4ff2279
[snip]
For older versions: the warning message is printed on STDERR, so you could just read STDIN to split apart the key information from the warning.
Without installing any further packages, you can use gpg --list-packets [file]
to view information on the OpenPGP packets contained in the file.
$ gpg --list-packets a4ff2279.asc
:public key packet:
version 4, algo 1, created 1356475387, expires 0
pkey[0]: [8192 bits]
pkey[1]: [17 bits]
keyid: 4E1F799AA4FF2279
:user ID packet: "Jens Erat (born 1988-01-19 in Stuttgart, Germany)"
:signature packet: algo 1, keyid 4E1F799AA4FF2279
version 4, created 1356516623, md5len 0, sigclass 0x13
digest algo 2, begin of digest 18 46
hashed subpkt 27 len 1 (key flags: 03)
[snip]
The pgpdump [file]
tool works similar to gpg --list-packets
and provides a similar output, but resolves all those algorithm identifiers to readable representations. It is available for probably all relevant distributions (on Debian derivatives, the package is called pgpdump
like the tool itself).
$ pgpdump a4ff2279.asc
Old: Public Key Packet(tag 6)(1037 bytes)
Ver 4 - new
Public key creation time - Tue Dec 25 23:43:07 CET 2012
Pub alg - RSA Encrypt or Sign(pub 1)
RSA n(8192 bits) - ...
RSA e(17 bits) - ...
Old: User ID Packet(tag 13)(49 bytes)
User ID - Jens Erat (born 1988-01-19 in Stuttgart, Germany)
Old: Signature Packet(tag 2)(1083 bytes)
Ver 4 - new
Sig type - Positive certification of a User ID and Public Key packet(0x13).
Pub alg - RSA Encrypt or Sign(pub 1)
Hash alg - SHA1(hash 2)
Hashed Sub: key flags(sub 27)(1 bytes)
[snip]
Here is a simple javascript only solution
function displayOverlay(text) {
$("<table id='overlay'><tbody><tr><td>" + text + "</td></tr></tbody></table>").css({
"position": "fixed",
"top": 0,
"left": 0,
"width": "100%",
"height": "100%",
"background-color": "rgba(0,0,0,.5)",
"z-index": 10000,
"vertical-align": "middle",
"text-align": "center",
"color": "#fff",
"font-size": "30px",
"font-weight": "bold",
"cursor": "wait"
}).appendTo("body");
}
function removeOverlay() {
$("#overlay").remove();
}
Demo:
http://jsfiddle.net/UziTech/9g0pko97/
Gist:
I think I have a better answer.
new Timestamp(longEpochTime).toLocalDateTime();
This hasn't been mentioned here, but you may want to check out this link: https://joshtronic.com/2015/04/19/handling-click-and-touch-events-on-the-same-element/
To recap for posterity, instead of trying to assign to both handlers and then sort out the result, you can simply check if the device is a touchscreen or not and only assign to the relevant event. Observe:
var clickEvent = (function() {
if ('ontouchstart' in document.documentElement === true)
return 'touchstart';
else
return 'click';
})();
// and assign thusly:
el.addEventListener( clickEvent, function( e ){
// things and stuff
});
I am using this to bind my events so that I can test on touchscreens that handle both touchstart
and click
events which would fire twice, and on my development PC which only hears the click
One problem the author of that link mentions though, is touchscreen laptops designed to handle both events:
I learned about a third device I was not considering, the touchscreen laptop. It’s a hybrid device that supports both touch and click events. Binding one event means only that event be supported. Does that mean someone with a touchscreen and mouse would have to explicitly touch because that’s the only event I am handling?
Binding
touchstart
andclick
seemed ideal to handle these hybrid devices. To keep the event from firing twice, I addede.stopPropagation()
ande.preventDefault()
to the callback functions.e.stopPropagation()
stops events from “bubbling up” to their parents but also keeps a second event from firing. I includede.preventDefault()
as a “just in case” but seems like it could be omitted.
You can follow these tutorials to get started
Tutorials
Hello World Web Server (paid)
Node JS Processing Model – Single Threaded Model with Event Loop Architecture
Developer Sites
Videos
Screencasts
Books
Courses
Blogs
Podcasts
JavaScript resources
Node.js Modules
Other
splattne's answer probably covered most of everything so I won't repeat the same thing, but: inline
and inline-block
behave differently with the direction
CSS property.
Within the next snippet you see one two
(in order) is rendered, like it does in LTR layouts. I suspect the browser here auto-detected the English part as LTR text and rendered it from left to right.
body {_x000D_
text-align: right;_x000D_
direction: rtl;_x000D_
}_x000D_
_x000D_
h2 {_x000D_
display: block; /* just being explicit */_x000D_
}_x000D_
_x000D_
span {_x000D_
display: inline;_x000D_
}
_x000D_
<h2>_x000D_
??? ????? ????_x000D_
<span>one</span>_x000D_
<span>two</span>_x000D_
</h2>
_x000D_
However, if I go ahead and set display
to inline-block
, the browser appears to respect the direction
property and render the elements from right to left in order, so that two one
is rendered.
body {_x000D_
text-align: right;_x000D_
direction: rtl;_x000D_
}_x000D_
_x000D_
h2 {_x000D_
display: block; /* just being explicit */_x000D_
}_x000D_
_x000D_
span {_x000D_
display: inline-block;_x000D_
}
_x000D_
<h2>_x000D_
??? ????? ????_x000D_
<span>one</span>_x000D_
<span>two</span>_x000D_
</h2>
_x000D_
I don't know if there are any other quirks to this, I only found about this empirically on Chrome.
A good example of the 307 Internal Redirect
in action is when Google Chrome encounters a HTTP call to a domain it knows as requiring Strict Transport Security.
The browser redirects seamlessly, using the same method as the original call.
One item that seems to have been missed is star transformations. Index Intersection operators resolve the predicate by calculating the set of rows hit by each of the predicates before any I/O is done on the fact table. On a star schema you would index each individual dimension key and the query optimiser can resolve which rows to select by the index intersection computation. The indexes on individual columns give the best flexibility for this.
This is what I use, based on this link
Function StripAccentb(RA As Range)
Dim A As String * 1
Dim B As String * 1
Dim i As Integer
Dim S As String
'Const AccChars = "ŠŽšžŸÀÁÂÃÄÅÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖÙÚÛÜÝàáâãäåçèéêëìíîïðñòóôõöùúûüýÿ"
'Const RegChars = "SZszYAAAAAACEEEEIIIIDNOOOOOUUUUYaaaaaaceeeeiiiidnooooouuuuyy"
Const AccChars = "ñéúãíçóêôöá" ' using less characters is faster
Const RegChars = "neuaicoeooa"
S = RA.Cells.Text
For i = 1 To Len(AccChars)
A = Mid(AccChars, i, 1)
B = Mid(RegChars, i, 1)
S = Replace(S, A, B)
'Debug.Print (S)
Next
StripAccentb = S
Exit Function
End Function
Usage:
=StripAccentb(B2) ' cell address
Sub version for all cells in a sheet:
Sub replacesub()
Dim A As String * 1
Dim B As String * 1
Dim i As Integer
Dim S As String
Const AccChars = "ñéúãíçóêôöá" ' using less characters is faster
Const RegChars = "neuaicoeooa"
Range("A1").Resize(Cells.Find(what:="*", SearchOrder:=xlRows, _
SearchDirection:=xlPrevious, LookIn:=xlValues).Row, _
Cells.Find(what:="*", SearchOrder:=xlByColumns, _
SearchDirection:=xlPrevious, LookIn:=xlValues).Column).Select '
For Each cell In Selection
If cell <> "" Then
S = cell.Text
For i = 1 To Len(AccChars)
A = Mid(AccChars, i, 1)
B = Mid(RegChars, i, 1)
S = replace(S, A, B)
Next
cell.Value = S
Debug.Print "celltext "; (cell.Text)
End If
Next cell
End Sub
ES6
convert object to map:
const objToMap = (o) => new Map(Object.entries(o));
convert map to object:
const mapToObj = (m) => [...m].reduce( (o,v)=>{ o[v[0]] = v[1]; return o; },{} )
Note: the mapToObj function assumes map keys are strings (will fail otherwise)
According to the error message, you declared myLoc
as a pointer to an NSInteger (NSInteger *myLoc
) rather than an actual NSInteger (NSInteger myLoc
). It needs to be the latter.
Single quotes work fine too, even without escaping the double quotes, at least in Excel 2016:
'text with spaces, and a comma','more text with spaces','spaces and "quoted text" and more spaces','nospaces','NOSPACES1234'
Excel will put that in 5 columns (if you choose the single quote as "Text qualifier" in the "Text to columns" wizard)
I would recommend using the BasicPlayerAPI. It's open source, very simple and it doesn't require JavaFX. http://www.javazoom.net/jlgui/api.html
After downloading and extracting the zip-file one should add the following jar-files to the build path of the project:
Here is a minimalistic usage example:
String songName = "HungryKidsofHungary-ScatteredDiamonds.mp3";
String pathToMp3 = System.getProperty("user.dir") +"/"+ songName;
BasicPlayer player = new BasicPlayer();
try {
player.open(new URL("file:///" + pathToMp3));
player.play();
} catch (BasicPlayerException | MalformedURLException e) {
e.printStackTrace();
}
Required imports:
import java.net.MalformedURLException;
import java.net.URL;
import javazoom.jlgui.basicplayer.BasicPlayer;
import javazoom.jlgui.basicplayer.BasicPlayerException;
That's all you need to start playing music. The Player is starting and managing his own playback thread and provides play, pause, resume, stop and seek functionality.
For a more advanced usage you may take a look at the jlGui Music Player. It's an open source WinAmp clone: http://www.javazoom.net/jlgui/jlgui.html
The first class to look at would be PlayerUI (inside the package javazoom.jlgui.player.amp). It demonstrates the advanced features of the BasicPlayer pretty well.
DELETE FROM on_search
WHERE search_date < UNIX_TIMESTAMP(DATE_SUB(NOW(), INTERVAL 180 DAY))
I use this function to check for file existence:
Function IsFile(ByVal fName As String) As Boolean
'Returns TRUE if the provided name points to an existing file.
'Returns FALSE if not existing, or if it's a folder
On Error Resume Next
IsFile = ((GetAttr(fName) And vbDirectory) <> vbDirectory)
End Function
In my case, I was getting this error despite registering an existing instance for the interface in question.
Turned out, it was because I was using Unity in WebForms by way of the Unity.WebForms Nuget package, and I had specified a Hierarchical Lifetime manager for the dependency I was providing an instance for, yet a Transient lifetime manager for a subsequent type that depended on the previous type - not usually an issue - but with Unity.WebForms, the lifetime managers work a little differently... your injected types seem to require a Hierarchical lifetime manager, but a new container is still created for every web request (because of the architecture of web forms I guess) as explained excellently in this post.
Anyway, I resolved it by simply not specifying a lifetime manager for the types/instances when registering them.
i.e.
container.RegisterInstance<IMapper>(MappingConfig.GetMapper(), new HierarchicalLifetimeManager());
container.RegisterType<IUserContext, UserContext>(new TransientLifetimeManager());
becomes
container.RegisterInstance<IMapper>(MappingConfig.GetMapper());
container.RegisterType<IUserContext, UserContext>();
So that IMapper can be resolved successfully here:
public class UserContext : BaseContext, IUserContext
{
public UserContext(IMapper _mapper) : base(_mapper)
{
}
...
}
You get the warning because you did not assign a value to one
, which is a pointer. This is undefined behavior.
You should declare it like this:
Vector* one = malloc(sizeof(Vector));
or like this:
Vector one;
in which case you need to replace ->
operator with .
like this:
one.a = 12;
one.b = 13;
one.c = -11;
Finally, in C99 and later you can use designated initializers:
Vector one = {
.a = 12
, .b = 13
, .c = -11
};
This worked well for me.
i.fa {
line-height: 100%;
}
Inner join: Only show rows, when has it data from both of the tables.
Outer join: (left/right): Show the all result from the left / right table with the paired row(s), if it exists or not.
Like @flodel wrote: This converts your dataframe into a list that has the same number of elements as number of rows in dataframe:
NewList <- split(df, f = seq(nrow(df)))
You can additionaly add a function to select only those columns that are not NA in each element of the list:
NewList2 <- lapply(NewList, function(x) x[,!is.na(x)])
Here's a a couple of useful link that I found when I started with JNI
http://en.wikipedia.org/wiki/Java_Native_Interface
http://download.oracle.com/javase/1.5.0/docs/guide/jni/spec/functions.html
concerning your problem you can use this
JNIEXPORT void JNICALL Java_ClassName_MethodName(JNIEnv *env, jobject obj, jstring javaString)
{
const char *nativeString = env->GetStringUTFChars(javaString, 0);
// use your string
env->ReleaseStringUTFChars(javaString, nativeString);
}
I think the following works best:
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
webView.setLayerType(View.LAYER_TYPE_HARDWARE, null);
} else {
webView.setLayerType(View.LAYER_TYPE_SOFTWARE, null);
}
Android 19 has Chromium engine for WebView. I guess it works better with hardware acceleration.
$user = User::where('email', '=', Input::get('email'))->first();
if ($user === null) {
// user doesn't exist
}
can be written as
if (User::where('email', '=', Input::get('email'))->first() === null) {
// user doesn't exist
}
This will return true or false without assigning a temporary variable if that is all you are using $user for in the original statement.
If you are in Java EE prospective in Eclipse and trying to start the Tomcat Server in Eclipse in debug mode, then you will get such errors. You must switch to debug prospective in Eclipse. I have solved my problem like this.
From wiki page
12 (form feed, \f, ^L), to cause a printer to eject paper to the top of the next page, or a video terminal to clear the screen.
or more details here.
It seems that this symbol is rather obsolete now and the way it is processed may be(?) implementation dependent. At least for me your code gives the following output (xcode gcc 4.2, gdb console):
hello
goodbye
A classic "or" would be |
. For example, ab|de
would match either side of the expression.
However, for something like your case you might want to use the ?
quantifier, which will match the previous expression exactly 0 or 1 times (1 times preferred; i.e. it's a "greedy" match). Another (probably more relyable) alternative would be using a custom character group:
\d+\s+[A-Z\s]+\s+[A-Z][A-Za-z]+
This pattern will match:
\d+
: One or more numbers.\s+
: One or more whitespaces.[A-Z\s]+
: One or more uppercase characters or space characters\s+
: One or more whitespaces.[A-Z][A-Za-z\s]+
: An uppercase character followed by at least one more character (uppercase or lowercase) or whitespaces.If you'd like a more static check, e.g. indeed only match ABC
and A ABC
, then you can combine a (non-matching) group and define the alternatives inside (to limit the scope):
\d (?:ABC|A ABC) Street
Or another alternative using a quantifier:
\d (?:A )?ABC Street
Seem no solutions fix the problem:
$(".anima-area").on('click', function (e) {
return false; //return true;
});
$(".anima-area").on('click', function (e) {
e.preventDefault();
});
$(".anima-area").click(function (r) {
e.preventDefault();
});
$(".anima-area").click(function () {
return false; //return true;
});
Bootstrap button always maintain th pressed status and block all .click code. If i remove .click function button comeback to work good.
Here's some more good practices around Timer use:
http://tech.puredanger.com/2008/09/22/timer-rules/
In general, I'd use Timer for quick and dirty stuff and Executor for more robust usage.