A general purpose ToCsv() extension method:
Usage Examples:
"123".ToCsv() // "1,2,3"
"123".ToCsv(", ") // "1, 2, 3"
new List<int> { 1, 2, 3 }.ToCsv() // "1,2,3"
new List<Tuple<int, string>>
{
Tuple.Create(1, "One"),
Tuple.Create(2, "Two")
}
.ToCsv(t => t.Item2); // "One,Two"
((string)null).ToCsv() // throws exception
((string)null).ToCsvOpt() // ""
((string)null).ToCsvOpt(ReturnNullCsv.WhenNull) // null
Implementation
/// <summary>
/// Specifies when ToCsv() should return null. Refer to ToCsv() for IEnumerable[T]
/// </summary>
public enum ReturnNullCsv
{
/// <summary>
/// Return String.Empty when the input list is null or empty.
/// </summary>
Never,
/// <summary>
/// Return null only if input list is null. Return String.Empty if list is empty.
/// </summary>
WhenNull,
/// <summary>
/// Return null when the input list is null or empty
/// </summary>
WhenNullOrEmpty,
/// <summary>
/// Throw if the argument is null
/// </summary>
ThrowIfNull
}
/// <summary>
/// Converts IEnumerable list of values to a comma separated string values.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="values">The values.</param>
/// <param name="joinSeparator"></param>
/// <returns>System.String.</returns>
public static string ToCsv<T>(
this IEnumerable<T> values,
string joinSeparator = ",")
{
return ToCsvOpt<T>(values, null /*selector*/, ReturnNullCsv.ThrowIfNull, joinSeparator);
}
/// <summary>
/// Converts IEnumerable list of values to a comma separated string values.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="values">The values.</param>
/// <param name="selector">An optional selector</param>
/// <param name="joinSeparator"></param>
/// <returns>System.String.</returns>
public static string ToCsv<T>(
this IEnumerable<T> values,
Func<T, string> selector,
string joinSeparator = ",")
{
return ToCsvOpt<T>(values, selector, ReturnNullCsv.ThrowIfNull, joinSeparator);
}
/// <summary>
/// Converts IEnumerable list of values to a comma separated string values.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="values">The values.</param>
/// <param name="returnNullCsv">Return mode (refer to enum ReturnNullCsv).</param>
/// <param name="joinSeparator"></param>
/// <returns>System.String.</returns>
public static string ToCsvOpt<T>(
this IEnumerable<T> values,
ReturnNullCsv returnNullCsv = ReturnNullCsv.Never,
string joinSeparator = ",")
{
return ToCsvOpt<T>(values, null /*selector*/, returnNullCsv, joinSeparator);
}
/// <summary>
/// Converts IEnumerable list of values to a comma separated string values.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="values">The values.</param>
/// <param name="selector">An optional selector</param>
/// <param name="returnNullCsv">Return mode (refer to enum ReturnNullCsv).</param>
/// <param name="joinSeparator"></param>
/// <returns>System.String.</returns>
public static string ToCsvOpt<T>(
this IEnumerable<T> values,
Func<T, string> selector,
ReturnNullCsv returnNullCsv = ReturnNullCsv.Never,
string joinSeparator = ",")
{
switch (returnNullCsv)
{
case ReturnNullCsv.Never:
if (!values.AnyOpt())
return string.Empty;
break;
case ReturnNullCsv.WhenNull:
if (values == null)
return null;
break;
case ReturnNullCsv.WhenNullOrEmpty:
if (!values.AnyOpt())
return null;
break;
case ReturnNullCsv.ThrowIfNull:
if (values == null)
throw new ArgumentOutOfRangeException("ToCsvOpt was passed a null value with ReturnNullCsv = ThrowIfNull.");
break;
default:
throw new ArgumentOutOfRangeException("returnNullCsv", returnNullCsv, "Out of range.");
}
if (selector == null)
{
if (typeof(T) == typeof(Int16) ||
typeof(T) == typeof(Int32) ||
typeof(T) == typeof(Int64))
{
selector = (v) => Convert.ToInt64(v).ToStringInvariant();
}
else if (typeof(T) == typeof(decimal))
{
selector = (v) => Convert.ToDecimal(v).ToStringInvariant();
}
else if (typeof(T) == typeof(float) ||
typeof(T) == typeof(double))
{
selector = (v) => Convert.ToDouble(v).ToString(CultureInfo.InvariantCulture);
}
else
{
selector = (v) => v.ToString();
}
}
return String.Join(joinSeparator, values.Select(v => selector(v)));
}
public static string ToStringInvariantOpt(this Decimal? d)
{
return d.HasValue ? d.Value.ToStringInvariant() : null;
}
public static string ToStringInvariant(this Decimal d)
{
return d.ToString(CultureInfo.InvariantCulture);
}
public static string ToStringInvariantOpt(this Int64? l)
{
return l.HasValue ? l.Value.ToStringInvariant() : null;
}
public static string ToStringInvariant(this Int64 l)
{
return l.ToString(CultureInfo.InvariantCulture);
}
public static string ToStringInvariantOpt(this Int32? i)
{
return i.HasValue ? i.Value.ToStringInvariant() : null;
}
public static string ToStringInvariant(this Int32 i)
{
return i.ToString(CultureInfo.InvariantCulture);
}
public static string ToStringInvariantOpt(this Int16? i)
{
return i.HasValue ? i.Value.ToStringInvariant() : null;
}
public static string ToStringInvariant(this Int16 i)
{
return i.ToString(CultureInfo.InvariantCulture);
}
The LINEST function described in a previous answer is the way to go, but an easier way to show the 3 coefficients of the output is to additionally use the INDEX function. In one cell, type: =INDEX(LINEST(B2:B21,A2:A21^{1,2},TRUE,FALSE),1) (by the way, the B2:B21 and A2:A21 I used are just the same values the first poster who answered this used... of course you'd change these ranges appropriately to match your data). This gives the X^2 coefficient. In an adjacent cell, type the same formula again but change the final 1 to a 2... this gives the X^1 coefficient. Lastly, in the next cell over, again type the same formula but change the last number to a 3... this gives the constant. I did notice that the three coefficients are very close but not quite identical to those derived by using the graphical trendline feature under the charts tab. Also, I discovered that LINEST only seems to work if the X and Y data are in columns (not rows), with no empty cells within the range, so be aware of that if you get a #VALUE error.
Sign-off is a requirement for getting patches into the Linux kernel and a few other projects, but most projects don't actually use it.
It was introduced in the wake of the SCO lawsuit, (and other accusations of copyright infringement from SCO, most of which they never actually took to court), as a Developers Certificate of Origin. It is used to say that you certify that you have created the patch in question, or that you certify that to the best of your knowledge, it was created under an appropriate open-source license, or that it has been provided to you by someone else under those terms. This can help establish a chain of people who take responsibility for the copyright status of the code in question, to help ensure that copyrighted code not released under an appropriate free software (open source) license is not included in the kernel.
In addition to given answer, it's worth noting that compiler is not required to initialize constexpr
variable at compile time, knowing that the difference between constexpr
and static constexpr
is that to use static constexpr
you ensure the variable is initialized only once.
Following code demonstrates how constexpr
variable is initialized multiple times (with same value though), while static constexpr
is surely initialized only once.
In addition the code compares the advantage of constexpr
against const
in combination with static
.
#include <iostream>
#include <string>
#include <cassert>
#include <sstream>
const short const_short = 0;
constexpr short constexpr_short = 0;
// print only last 3 address value numbers
const short addr_offset = 3;
// This function will print name, value and address for given parameter
void print_properties(std::string ref_name, const short* param, short offset)
{
// determine initial size of strings
std::string title = "value \\ address of ";
const size_t ref_size = ref_name.size();
const size_t title_size = title.size();
assert(title_size > ref_size);
// create title (resize)
title.append(ref_name);
title.append(" is ");
title.append(title_size - ref_size, ' ');
// extract last 'offset' values from address
std::stringstream addr;
addr << param;
const std::string addr_str = addr.str();
const size_t addr_size = addr_str.size();
assert(addr_size - offset > 0);
// print title / ref value / address at offset
std::cout << title << *param << " " << addr_str.substr(addr_size - offset) << std::endl;
}
// here we test initialization of const variable (runtime)
void const_value(const short counter)
{
static short temp = const_short;
const short const_var = ++temp;
print_properties("const", &const_var, addr_offset);
if (counter)
const_value(counter - 1);
}
// here we test initialization of static variable (runtime)
void static_value(const short counter)
{
static short temp = const_short;
static short static_var = ++temp;
print_properties("static", &static_var, addr_offset);
if (counter)
static_value(counter - 1);
}
// here we test initialization of static const variable (runtime)
void static_const_value(const short counter)
{
static short temp = const_short;
static const short static_var = ++temp;
print_properties("static const", &static_var, addr_offset);
if (counter)
static_const_value(counter - 1);
}
// here we test initialization of constexpr variable (compile time)
void constexpr_value(const short counter)
{
constexpr short constexpr_var = constexpr_short;
print_properties("constexpr", &constexpr_var, addr_offset);
if (counter)
constexpr_value(counter - 1);
}
// here we test initialization of static constexpr variable (compile time)
void static_constexpr_value(const short counter)
{
static constexpr short static_constexpr_var = constexpr_short;
print_properties("static constexpr", &static_constexpr_var, addr_offset);
if (counter)
static_constexpr_value(counter - 1);
}
// final test call this method from main()
void test_static_const()
{
constexpr short counter = 2;
const_value(counter);
std::cout << std::endl;
static_value(counter);
std::cout << std::endl;
static_const_value(counter);
std::cout << std::endl;
constexpr_value(counter);
std::cout << std::endl;
static_constexpr_value(counter);
std::cout << std::endl;
}
Possible program output:
value \ address of const is 1 564
value \ address of const is 2 3D4
value \ address of const is 3 244
value \ address of static is 1 C58
value \ address of static is 1 C58
value \ address of static is 1 C58
value \ address of static const is 1 C64
value \ address of static const is 1 C64
value \ address of static const is 1 C64
value \ address of constexpr is 0 564
value \ address of constexpr is 0 3D4
value \ address of constexpr is 0 244
value \ address of static constexpr is 0 EA0
value \ address of static constexpr is 0 EA0
value \ address of static constexpr is 0 EA0
As you can see yourself constexpr
is initilized multiple times (address is not the same) while static
keyword ensures that initialization is performed only once.
a.txt
this is line 1
this is line 2
code:
Python 3.4.0 (default, Mar 20 2014, 22:43:40)
[GCC 4.6.3] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> file = open('a.txt').read()
>>> file
>>> file.split('\n')
['this is line 1', 'this is line 2', '']
I'm on Linux, but I guess you just use \r\n
on Windows and it would also work
All the above answers are proper. The important thing to observe is arrays have length attribute but not length method. Whenever you use strings and arrays in java the three basic models you might face are:
Try this with example
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1 /jquery.min.js"></script>
<form id="myForm">
<input type="radio" name="radio" value="first"/> 1 <br/>
<input type="radio" name="radio" value="second"/> 2 <br/>
</form>
<script>
$(document).ready(function () {
$('#myForm').on('click', function () {
var value = $("[name=radio]:checked").val();
alert(value);
})
});
</script>
In my case, I just needed to close my pop-up and redirect the user to his profile page when he clicks "ok" after reading some message I tried with a few hacks, including setTimeout + self.close(), but with IE, this was closing the whole tab...
Solution :
I replaced my link with a simple submit button.
<button type="submit" onclick="window.location.href='profile.html';">buttonText</button>
.
Nothing more.
This may sound stupid, but I didn't think to such a simple solution, since my pop-up did not have any form.
I hope it will help some front-end noobs like me !
You need to compile and then link the object files like this:
gcc -c a.c
gcc -c b.c
gcc a.o b.o -o prog
My simple solution:
private boolean checkIfInt(double value){
return value - Math.floor(value) == 0;
}
You are looking for display:
document.getElementById("endTimeLabel").style.display = 'none';
document.getElementById("endTimeLabel").style.display = 'block';
Edit: You could also easily reuse your validation function.
HTML:
<span id="startDateLabel">Start date/time: </span>
<input id="startDateStr" name="startDateStr" size="8" onchange="if (!formatDate(this,'USA')) {this.value = '';}" />
<button id="startDateCalendarTrigger">...</button>
<input id="startDateTime" type="text" size="8" name="startTime" value="12:00 AM" onchange="validateHHMM(this.value, 'startTimeLabel');"/>
<label id="startTimeLabel" class="errorMsg">Time must be entered in the format HH:MM AM/PM</label><br />
<span id="endDateLabel">End date/time: </span>
<input id="endDateStr" name="endDateStr" size="8" onchange="if (!formatDate(this,'USA')) {this.value = '';}" />
<button id="endDateCalendarTrigger">...</button>
<input id="endDateTime" type="text" size="8" name="endTime" value="12:00 AM" onchange="validateHHMM(this.value, 'endTimeLabel');"/>
<label id="endTimeLabel" class="errorMsg">Time must be entered in the format HH:MM AM/PM</label>
Javascript:
function validateHHMM(value, message) {
var isValid = /^(0?[1-9]|1[012])(:[0-5]\d) [APap][mM]$/.test(value);
if (isValid) {
document.getElementById(message).style.display = "none";
}else {
document.getElementById(message).style.display= "inline";
}
return isValid;
}
You can run your application with parameters such as app -something -somethingelse
. int argc
represents number of these parameters and char *argv[]
is an array with actual parameters being passed into your application. This way you can work with them inside of your application.
On my side, this error came from the data type "INT' in the Null values column. The error is resolved by just changing the data a type to varchar.
The []
syntax for getting item by key or index is just syntax sugar.
When you evaluate a[i]
Python calls a.__getitem__(i)
(or type(a).__getitem__(a, i)
, but this distinction is about inheritance models and is not important here). Even if the class of a
may not explicitly define this method, it is usually inherited from an ancestor class.
All the (Python 2.7) special method names and their semantics are listed here: https://docs.python.org/2.7/reference/datamodel.html#special-method-names
I have occurred the same error look following example-
async.waterfall([function(waterCB) {
waterCB(null);
}, function(**inputArray**, waterCB) {
waterCB(null);
}], function(waterErr, waterResult) {
console.log('Done');
});
In the above waterfall function, I am accepting inputArray parameter in waterfall 2nd function. But this inputArray not passed in waterfall 1st function in waterCB.
Cheak your function parameters Below are a correct example.
async.waterfall([function(waterCB) {
waterCB(null, **inputArray**);
}, function(**inputArray**, waterCB) {
waterCB(null);
}], function(waterErr, waterResult) {
console.log('Done');
});
Thanks
To activate the cursor and select the columns you want to select use:
Windows: Alt+Shift+A
Mac: command + option + A
Linux-based OS: Alt+Shift+A
To deactivate, press the keys again.
This information was taken from DJ's Java Blog.
If you are using Angular you can get it off with:
"env": {
"browser": true,
"node": true
},
"rules" : {
"angular/window-service": 0
}
here is one line code
name = (city.getName() != null) ? city.getName() : "N/A";
here is example how it work, run below code in js file and understand the result. This ("Data" != null)
is condition as we do in normal if()
and "Data"
is statement when this condition became true. this " : "
act as else and "N/A"
is statement for else condition. Hope this help you to understand the logic.
name = ("Data" != null) ? "Data" : "N/A";_x000D_
_x000D_
console.log(name);
_x000D_
You can save a BufferedImage
object using write method of the javax.imageio.ImageIO
class. The signature of the method is like this:
public static boolean write(RenderedImage im, String formatName, File output) throws IOException
Here im
is the RenderedImage
to be written, formatName
is the String containing the informal name of the format (e.g. png) and output
is the file object to be written to. An example usage of the method for PNG file format is shown below:
ImageIO.write(image, "png", file);
For simplicity and brevity:
$ cat Makefile
check-%:
@: $(if $(value $*),,$(error $* is undefined))
bar:| check-foo
echo "foo is $$foo"
With outputs:
$ make bar
Makefile:2: *** foo is undefined. Stop.
$ make bar foo="something"
echo "foo is $$foo"
foo is something
Step 1: Copy paste these two functions in your java file.
public void setDefaults(String key, String value, Context context) {
SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context);
SharedPreferences.Editor editor = preferences.edit();
editor.putString(key, value);
editor.commit();
}
public static String getDefaults(String key, Context context) {
SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context);
return preferences.getString(key, null);
}
Step 2: to save use:
setDefaults("key","value",this);
to retrieve use:
String retrieve= getDefaults("key",this);
You can set different shared preferences by using different key names like:
setDefaults("key1","xyz",this);
setDefaults("key2","abc",this);
setDefaults("key3","pqr",this);
var tv = findViewById(R.id.tv)
as TextView
tv.setOnClickListener {
val i = Intent(this@MainActivity, SecondActivity::class.java)
startActivity(i)
finish()
}
You used data-datepicker="datepicker"
It must be date-provide="datepicker"
Also, you included 2 bootstrap stylesheets bootstrap.css
and bootstrap.min.css
I also prefer to use bootstrap-datepicker3.min.css
than datepicker.less
Full Html:
<html>
<head>
<title>DatePicker Demo</title>
<link href="css/bootstrap.min.css" rel="stylesheet" type="text/css" />
<link rel="stylesheet" href="css/bootstrap-datepicker3.min.css">
<script src="js/jquery-1.7.1.js"></script>
<script src="js/bootstrap-datepicker.js"></script>
</head>
<body>
<form>
<div class="input">
<input data-provide="datepicker" class="small" type="text" value="01/05/2011">
</div>
</form>
</body>
</html>
var dt = new Date();
dt.getFullYear() + "/" + (dt.getMonth() + 1) + "/" + dt.getDate();
Since month index are 0 based you have to increment it by 1.
Edit
For a complete list of date object functions see
getMonth()
Returns the month (0-11) in the specified date according to local time.
getUTCMonth()
Returns the month (0-11) in the specified date according to universal time.
There is a whole page in the MATLAB documentation dedicated to this topic: Array vs. Matrix Operations. The gist of it is below:
MATLAB® has two different types of arithmetic operations: array operations and matrix operations. You can use these arithmetic operations to perform numeric computations, for example, adding two numbers, raising the elements of an array to a given power, or multiplying two matrices.
Matrix operations follow the rules of linear algebra. By contrast, array operations execute element by element operations and support multidimensional arrays. The period character (
.
) distinguishes the array operations from the matrix operations. However, since the matrix and array operations are the same for addition and subtraction, the character pairs.+
and.-
are unnecessary.
for f, b in zip(foo, bar):
print(f, b)
zip
stops when the shorter of foo
or bar
stops.
In Python 3, zip
returns an iterator of tuples, like itertools.izip
in Python2. To get a list
of tuples, use list(zip(foo, bar))
. And to zip until both iterators are
exhausted, you would use
itertools.zip_longest.
In Python 2, zip
returns a list of tuples. This is fine when foo
and bar
are not massive. If they are both massive then forming zip(foo,bar)
is an unnecessarily massive
temporary variable, and should be replaced by itertools.izip
or
itertools.izip_longest
, which returns an iterator instead of a list.
import itertools
for f,b in itertools.izip(foo,bar):
print(f,b)
for f,b in itertools.izip_longest(foo,bar):
print(f,b)
izip
stops when either foo
or bar
is exhausted.
izip_longest
stops when both foo
and bar
are exhausted.
When the shorter iterator(s) are exhausted, izip_longest
yields a tuple with None
in the position corresponding to that iterator. You can also set a different fillvalue
besides None
if you wish. See here for the full story.
Note also that zip
and its zip
-like brethen can accept an arbitrary number of iterables as arguments. For example,
for num, cheese, color in zip([1,2,3], ['manchego', 'stilton', 'brie'],
['red', 'blue', 'green']):
print('{} {} {}'.format(num, color, cheese))
prints
1 red manchego
2 blue stilton
3 green brie
If you are working with Images only and you need mime type (e.g. for headers), then this is the fastest and most direct answer:
$file = 'path/to/image.jpg';
$image_mime = image_type_to_mime_type(exif_imagetype($file));
It will output true image mime type even if you rename your image file
Check php.ini for auto session id.
If you enable it, you will have PHPSESSID in your cookies.
IE11 do accept Java according to the link below : http://windows.microsoft.com/en-us/internet-explorer/install-java#ie=ie-11
And firefox also intended to remove NPAPI by the end of 2016 according to : https://blog.mozilla.org/futurereleases/2015/10/08/npapi-plugins-in-firefox/
I have been hasseling with that as other folks have.
I used the criteria;
=countif(matchingList,C2)=0
where matchingList is the list that i am using as a filter.
have a look at this
http://www.youtube.com/watch?v=x47VFMhRLnM&list=PL63A7644FE57C97F4&index=30
The trick i found is that normally you would have the column heading in the criteria matching the data column heading. this will not work for criteria that is a formula.
What I found was if I left the column heading blank for only the criteria that has the countif
formula in the advanced filter works. If I have the column heading i.e. the column heading for column C2 in my formula example then the filter return no output.
Hope this helps
For the question
How can i run a jar file in command prompt but with arguments
.
To pass arguments to the jar file at the time of execution
java -jar myjar.jar arg1 arg2
In the main() method of "Main-Class" [mentioned in the manifest.mft file]of your JAR file. you can retrieve them like this:
String arg1 = args[0];
String arg2 = args[1];
multipart/form-data
encoded requests are indeed not by default supported by the Servlet API prior to version 3.0. The Servlet API parses the parameters by default using application/x-www-form-urlencoded
encoding. When using a different encoding, the request.getParameter()
calls will all return null
. When you're already on Servlet 3.0 (Glassfish 3, Tomcat 7, etc), then you can use HttpServletRequest#getParts()
instead. Also see this blog for extended examples.
Prior to Servlet 3.0, a de facto standard to parse multipart/form-data
requests would be using Apache Commons FileUpload. Just carefully read its User Guide and Frequently Asked Questions sections to learn how to use it. I've posted an answer with a code example before here (it also contains an example targeting Servlet 3.0).
I used
elm.children('.class-name-or-whatever')
to get children of the current element
I encountered the same issue after XAMPP v3.2.1 installation. I do not have Skype as most people would believe, however as a Software Developer I assumed port 80 is already in use by my other apps. So I changed it by simply using the XAMPP Control Panel:
Click on the 'Config' button corresponding to the APACHE service and choose the first option 'Apache (httpd.conf)'. In the document that opens (using any text editor - except MS Word!), locate the text:
Listen 12.34.56.78:80
Listen 80
And change this to:
Listen 12.34.56.78:83
Listen 83
This can be any non-used port number. Thanks.
Using java 8 removeIf
public int getSimilarItems(){
List<String> one = Arrays.asList("milan", "dingo", "elpha", "hafil", "meat", "iga", "neeta.peeta");
List<String> two = new ArrayList<>(Arrays.asList("hafil", "iga", "binga", "mike", "dingo")); //Cannot remove directly from array backed collection
int initial = two.size();
two.removeIf(one::contains);
return initial - two.size();
}
Selvin already posted the right answer. Here, the solution in pretty code:
public class ServicesViewActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// etc...
getActionBar().setDisplayHomeAsUpEnabled(true);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
NavUtils.navigateUpFromSameTask(this);
return true;
default:
return super.onOptionsItemSelected(item);
}
}
}
The function NavUtils.navigateUpFromSameTask(this)
requires you to define the parent activity in the AndroidManifest.xml file
<activity android:name="com.example.ServicesViewActivity" >
<meta-data
android:name="android.support.PARENT_ACTIVITY"
android:value="com.example.ParentActivity" />
</activity>
See here for further reading.
Another way of doing this:
new_df = A_df.merge(B_df, left_on=['A_c1','c2'], right_on = ['B_c1','c2'], how='left')
Also can use without parent
say router definition like:
{path:'/about', name: 'About', component: AboutComponent}
then can navigate by name
instead of path
goToAboutPage() {
this.router.navigate(['About']); // here "About" is name not path
}
Updated for V2.3.0
In Routing from v2.0 name property no more exist. route define without name property. so you should use path instead of name. this.router.navigate(['/path'])
and no leading slash for path so use path: 'about'
instead of path: '/about'
router definition like:
{path:'about', component: AboutComponent}
then can navigate by path
goToAboutPage() {
this.router.navigate(['/about']); // here "About" is path
}
You can't, Print Preview is a feature of a browser, and therefore should be protected from being called by JavaScript as it would be a security risk.
That's why your example uses Active X, which bypasses the JavaScript security issues.
So instead use the print stylesheet that you already should have and show it for media=screen,print instead of media=print.
Read Alist Apart: Going to Print for a good article on the subject of print stylesheets.
Fundamentally you hadn't declare location which is what nginx uses to bind URL with resources.
server {
listen 80;
server_name localhost;
access_log logs/localhost.access.log main;
location / {
root /var/www/board/public;
index index.html index.htm index.php;
}
}
One method would be:
var text = $(this).val();
text = text.replace(/</g, "<").replace(/>/g, ">");
$("#output").html(text);
loaddir is my solution for quick loading of a directory, recursively.
can return
{ 'path/to/file': 'fileContents...' }
or
{ path: { to: { file: 'fileContents'} } }
It has callback
which will be called when the file is changed.
It handles situations where files are large enough that watch
gets called before they're done writing.
I've been using it in projects for a year or so, and just recently added promises to it.
Help me battle test it!
Use the instructions from the API Manager using keytool:
Get the package name from your AndroidManifest.xml file. Then use the following command to get the fingerprint:
keytool -list -v -keystore mystore.keystore
You can deserialize this really easily. The data's structure in C# is just List<string[]>
so you could just do;
List<string[]> data = JsonConvert.DeserializeObject<List<string[]>>(jsonString);
The above code is assuming you're using json.NET.
EDIT: Note the json is technically an array of string arrays. I prefer to use List<string[]>
for my own declaration because it's imo more intuitive. It won't cause any problems for json.NET, if you want it to be an array of string arrays then you need to change the type to (I think) string[][]
but there are some funny little gotcha's with jagged and 2D arrays in C# that I don't really know about so I just don't bother dealing with it here.
When I was facing this issue, I simply put just getter setter methods and my issues were resolved.
I am using Spring boot version 2.0.
Easiest way is to use System.Linq as previously described
using System.Linq;
public int GetHighestValue(List<MyTypes> list)
{
return list.Count > 0 ? list.Max(t => t.Age) : 0; //could also return -1
}
This is also possible with a Dictionary
using System.Linq;
public int GetHighestValue(Dictionary<MyTypes, OtherType> obj)
{
return obj.Count > 0 ? obj.Max(t => t.Key.Age) : 0; //could also return -1
}
Lets get at the root of the question, how to address the last element of a List safely...
Assuming
List<string> myList = new List<string>();
Then
//NOT safe on an empty list!
string myString = myList[myList.Count -1];
//equivalent to the above line when Count is 0, bad index
string otherString = myList[-1];
"count-1" is a bad habit unless you first guarantee the list is not empty.
There is not a convenient way around checking for the empty list except to do it.
The shortest way I can think of is
string myString = (myList.Count != 0) ? myList [ myList.Count-1 ] : "";
you could go all out and make a delegate that always returns true, and pass it to FindLast, which will return the last value (or default constructed valye if the list is empty). This function starts at the end of the list so will be Big O(1) or constant time, despite the method normally being O(n).
//somewhere in your codebase, a strange delegate is defined
private static bool alwaysTrue(string in)
{
return true;
}
//Wherever you are working with the list
string myString = myList.FindLast(alwaysTrue);
The FindLast method is ugly if you count the delegate part, but it only needs to be declared one place. If the list is empty, it will return a default constructed value of the list type "" for string. Taking the alwaysTrue delegate a step further, making it a template instead of string type, would be more useful.
I've got this problem when I use HttpClient in Multithread envirnoment (Servlets). One servlet still holds connection and another one want to get connection.
Solution:
version 4.0 use ThreadSafeClientConnManager
version 4.2 use PoolingClientConnectionManager
and set this two setters:
setDefaultMaxPerRoute
setMaxTotal
Your original attempt to span both tables creates an implicit JOIN. This is frowned upon by most experienced SQL programmers because it separates the tables to be combined with the condition of how.
The UNION
is a good solution for the tables as they are, but there should be no reason they can't be put into the one table with decent indexing. I've seen adding the correct index to a large table increase query speed by three orders of magnitude.
In my opinion, there is no Pair in Java because, if you want to add extra functionality directly on the pair (e.g. Comparable), you must bound the types. In C++, we just don't care, and if types composing a pair do not have operator <
, the pair::operator <
will not compile as well.
An example of Comparable with no bounding:
public class Pair<F, S> implements Comparable<Pair<? extends F, ? extends S>> {
public final F first;
public final S second;
/* ... */
public int compareTo(Pair<? extends F, ? extends S> that) {
int cf = compare(first, that.first);
return cf == 0 ? compare(second, that.second) : cf;
}
//Why null is decided to be less than everything?
private static int compare(Object l, Object r) {
if (l == null) {
return r == null ? 0 : -1;
} else {
return r == null ? 1 : ((Comparable) (l)).compareTo(r);
}
}
}
/* ... */
Pair<Thread, HashMap<String, Integer>> a = /* ... */;
Pair<Thread, HashMap<String, Integer>> b = /* ... */;
//Runtime error here instead of compile error!
System.out.println(a.compareTo(b));
An example of Comparable with compile-time check for whether type arguments are comparable:
public class Pair<
F extends Comparable<? super F>,
S extends Comparable<? super S>
> implements Comparable<Pair<? extends F, ? extends S>> {
public final F first;
public final S second;
/* ... */
public int compareTo(Pair<? extends F, ? extends S> that) {
int cf = compare(first, that.first);
return cf == 0 ? compare(second, that.second) : cf;
}
//Why null is decided to be less than everything?
private static <
T extends Comparable<? super T>
> int compare(T l, T r) {
if (l == null) {
return r == null ? 0 : -1;
} else {
return r == null ? 1 : l.compareTo(r);
}
}
}
/* ... */
//Will not compile because Thread is not Comparable<? super Thread>
Pair<Thread, HashMap<String, Integer>> a = /* ... */;
Pair<Thread, HashMap<String, Integer>> b = /* ... */;
System.out.println(a.compareTo(b));
This is good, but this time you may not use non-comparable types as type arguments in Pair. One may use lots of Comparators for Pair in some utility class, but C++ people may not get it. Another way is to write lots of classes in a type hierarchy with different bounds on type arguments, but there are too many possible bounds and their combinations...
One way is to add this to a new c# class or HtmlExtensions class
public static class HtmlExtensions
{
public static MvcHtmlString Image(this HtmlHelper html, byte[] image)
{
var img = String.Format("data:image/jpg;base64,{0}", Convert.ToBase64String(image));
return new MvcHtmlString("<img src='" + img + "' />");
}
}
then you can do this in any view
@Html.Image(Model.ImgBytes)
Check these links: http://www.orcsweb.com/blog/james/powershell-ing-on-windows-server-how-to-import-certificates-using-powershell/
Import-Certificate: http://poshcode.org/1937
You can do something like:
dir -Path C:\Certs -Filter *.cer | Import-Certificate -CertFile $_ -StoreNames AuthRoot, Root -LocalMachine -Verbose
this will work as well
require_once(realpath($_SERVER["DOCUMENT_ROOT"]) .'/mysite/php/includes/dbconn.inc');
Material Design styling alert dialogs: Custom Font, Button, Color & shape,..
MaterialAlertDialogBuilder(requireContext(),
R.style.MyAlertDialogTheme
)
.setIcon(R.drawable.ic_dialogs_24px)
.setTitle("Feedback")
//.setView(R.layout.edit_text)
.setMessage("Do you have any additional comments?")
.setPositiveButton("Send") { dialog, _ ->
val input =
(dialog as AlertDialog).findViewById<TextView>(
android.R.id.text1
)
Toast.makeText(context, input!!.text, Toast.LENGTH_LONG).show()
}
.setNegativeButton("Cancel") { _, _ ->
Toast.makeText(requireContext(), "Clicked cancel", Toast.LENGTH_SHORT).show()
}
.show()
Style:
<style name="MyAlertDialogTheme" parent="Theme.MaterialComponents.DayNight.Dialog.Alert">
<item name="android:textAppearanceSmall">@style/MyTextAppearance</item>
<item name="android:textAppearanceMedium">@style/MyTextAppearance</item>
<item name="android:textAppearanceLarge">@style/MyTextAppearance</item>
<item name="buttonBarPositiveButtonStyle">@style/Alert.Button.Positive</item>
<item name="buttonBarNegativeButtonStyle">@style/Alert.Button.Neutral</item>
<item name="buttonBarNeutralButtonStyle">@style/Alert.Button.Neutral</item>
<item name="android:backgroundDimEnabled">true</item>
<item name="shapeAppearanceOverlay">@style/ShapeAppearanceOverlay.MyApp.Dialog.Rounded
</item>
</style>
<style name="MyTextAppearance" parent="TextAppearance.AppCompat">
<item name="android:fontFamily">@font/rosarivo</item>
</style>
<style name="Alert.Button.Positive" parent="Widget.MaterialComponents.Button.TextButton">
<!-- <item name="backgroundTint">@color/colorPrimaryDark</item>-->
<item name="backgroundTint">@android:color/transparent</item>
<item name="rippleColor">@color/colorAccent</item>
<item name="android:textColor">@color/colorPrimary</item>
<!-- <item name="android:textColor">@android:color/white</item>-->
<item name="android:textSize">14sp</item>
<item name="android:textAllCaps">false</item>
</style>
<style name="Alert.Button.Neutral" parent="Widget.MaterialComponents.Button.TextButton">
<item name="backgroundTint">@android:color/transparent</item>
<item name="rippleColor">@color/colorAccent</item>
<item name="android:textColor">@color/colorPrimary</item>
<!--<item name="android:textColor">@android:color/darker_gray</item>-->
<item name="android:textSize">14sp</item>
<item name="android:textAllCaps">false</item>
</style>
<style name="ShapeAppearanceOverlay.MyApp.Dialog.Rounded" parent="">
<item name="cornerFamily">rounded</item>
<item name="cornerSize">8dp</item>
</style>
You can use like bellow:
(( var0 = var1<98?9:21 ))
the same as
if [ "$var1" -lt 98 ]; then
var0=9
else
var0=21
fi
extends
condition?result-if-true:result-if-false
I found the interested thing on the book "Advanced Bash-Scripting Guide"
Try this...
function nationList($limit=null, $start=null) {
if ($this->session->userdata('language') == "it") {
$this->db->select('nation.id, nation.name_it as name');
}
if ($this->session->userdata('language') == "en") {
$this->db->select('nation.id, nation.name_en as name');
}
$this->db->from('nation');
$this->db->order_by("name", "asc");
if ($limit != '' && $start != '') {
$this->db->limit($limit, $start);
}
$query = $this->db->get();
$nation = array();
foreach ($query->result() as $row) {
array_push($nation, $row);
}
return $nation;
}
I don't know is there any method in Python API.But you can use this simple code to add Salt-and-Pepper noise to an image.
import numpy as np
import random
import cv2
def sp_noise(image,prob):
'''
Add salt and pepper noise to image
prob: Probability of the noise
'''
output = np.zeros(image.shape,np.uint8)
thres = 1 - prob
for i in range(image.shape[0]):
for j in range(image.shape[1]):
rdn = random.random()
if rdn < prob:
output[i][j] = 0
elif rdn > thres:
output[i][j] = 255
else:
output[i][j] = image[i][j]
return output
image = cv2.imread('image.jpg',0) # Only for grayscale image
noise_img = sp_noise(image,0.05)
cv2.imwrite('sp_noise.jpg', noise_img)
Unfortunately, you can't change the font size or styling in a drop-down list that is created using data validation.
You can style the text in a combo box, however. Follow the instructions here: Excel Data Validation Combo Box
To show how much fun it is to create some functions that are fail fast I've written the following 3 functions.
One creates an AES key, one encodes it and one decodes it back. These three methods can be used with Java 8 (without dependence of internal classes or outside dependencies):
public static SecretKey generateAESKey(int keysize)
throws InvalidParameterException {
try {
if (Cipher.getMaxAllowedKeyLength("AES") < keysize) {
// this may be an issue if unlimited crypto is not installed
throw new InvalidParameterException("Key size of " + keysize
+ " not supported in this runtime");
}
final KeyGenerator keyGen = KeyGenerator.getInstance("AES");
keyGen.init(keysize);
return keyGen.generateKey();
} catch (final NoSuchAlgorithmException e) {
// AES functionality is a requirement for any Java SE runtime
throw new IllegalStateException(
"AES should always be present in a Java SE runtime", e);
}
}
public static SecretKey decodeBase64ToAESKey(final String encodedKey)
throws IllegalArgumentException {
try {
// throws IllegalArgumentException - if src is not in valid Base64
// scheme
final byte[] keyData = Base64.getDecoder().decode(encodedKey);
final int keysize = keyData.length * Byte.SIZE;
// this should be checked by a SecretKeyFactory, but that doesn't exist for AES
switch (keysize) {
case 128:
case 192:
case 256:
break;
default:
throw new IllegalArgumentException("Invalid key size for AES: " + keysize);
}
if (Cipher.getMaxAllowedKeyLength("AES") < keysize) {
// this may be an issue if unlimited crypto is not installed
throw new IllegalArgumentException("Key size of " + keysize
+ " not supported in this runtime");
}
// throws IllegalArgumentException - if key is empty
final SecretKeySpec aesKey = new SecretKeySpec(keyData, "AES");
return aesKey;
} catch (final NoSuchAlgorithmException e) {
// AES functionality is a requirement for any Java SE runtime
throw new IllegalStateException(
"AES should always be present in a Java SE runtime", e);
}
}
public static String encodeAESKeyToBase64(final SecretKey aesKey)
throws IllegalArgumentException {
if (!aesKey.getAlgorithm().equalsIgnoreCase("AES")) {
throw new IllegalArgumentException("Not an AES key");
}
final byte[] keyData = aesKey.getEncoded();
final String encodedKey = Base64.getEncoder().encodeToString(keyData);
return encodedKey;
}
The test has to be done on a page that queries a database so yes typically that is a login page because it's the page that can do the most harm but could be an unsecure page as well.
Generally you would have your database queries behind a secure login but if you just have a listing of items or something that you don't care if the world sees a hacker could append some sql injection to the end of the querystring.
The key with SQL Injection is the person doing the injection would have to know that your querying a database so if your not querying a database then no sql inject can be done. If your form is submitting to a database then yes they could SQL Inject that. It's always good practice to use either stored procedures to select/insert/update/delete or make sure you prepare or escape out all the statements that will be hitting the database.
I've written a method that allows emty lines, outcommenting and quoting within the file.
Examples:
var1="value1"
var2='value2'
'var3=outcommented
;var4=outcommented, too
Here's the method:
public static IDictionary ReadDictionaryFile(string fileName)
{
Dictionary<string, string> dictionary = new Dictionary<string, string>();
foreach (string line in File.ReadAllLines(fileName))
{
if ((!string.IsNullOrEmpty(line)) &&
(!line.StartsWith(";")) &&
(!line.StartsWith("#")) &&
(!line.StartsWith("'")) &&
(line.Contains('=')))
{
int index = line.IndexOf('=');
string key = line.Substring(0, index).Trim();
string value = line.Substring(index + 1).Trim();
if ((value.StartsWith("\"") && value.EndsWith("\"")) ||
(value.StartsWith("'") && value.EndsWith("'")))
{
value = value.Substring(1, value.Length - 2);
}
dictionary.Add(key, value);
}
}
return dictionary;
}
Yes, it is significantly slower. We were running some code that did that, and while I don't have the metrics available at the moment, the end result was that we had to refactor that code to not use reflection. If you know what the class is, just call the constructor directly.
The values are determined by the bit of the image. 8 bit 0 to 255
16 bit...some ridiculous number..0 to 65,000 approx.
32 bit are 0 to 1
I use .004 with 32 bit images...this gives 1.02 as a result when multiplied by 255
This is supported on IE8+.
First we check if classList
exists if it does we can use the contains
method which is supported by IE10+. If we are on IE9 or 8 it falls back to using a regex, which is not as efficient but is a concise polyfill.
if (el.classList) {
el.classList.contains(className);
} else {
new RegExp('(^| )' + className + '( |$)', 'gi').test(el.className);
}
Alternatively if you are compiling with babel you can simply use:
el.classList.contains(className);
If you want to just display some text in your .cshtml page, I do not recommend @Html.Label and also not to use the html label as well. The element represents a caption in a user interface. and you'll see that in the case of @Html.Label, a for attribute is added, referring to the id of a, possibly non-existent, element. The value of this attribute is the value of the model field, in which non-alphanumerics are replaced by underscores. You should use @Html.Display or @Html.DisplayFor, possibly wrapped in some plain html elements line span or p.
Use the beginning and end anchors.
Regex regex = new Regex(@"^\d$");
Use "^\d+$"
if you need to match more than one digit.
Note that "\d"
will match [0-9]
and other digit characters like the Eastern Arabic numerals ??????????
. Use "^[0-9]+$"
to restrict matches to just the Arabic numerals 0 - 9.
If you need to include any numeric representations other than just digits (like decimal values for starters), then see @tchrist's comprehensive guide to parsing numbers with regular expressions.
You don't actually need the bundle as the ADT can be used with just any latest Eclipse IDE.
Download latest eclipse.
Download latest ADT plugin ADT-XX.X.X.zip
. As of this answer the current version is ADT-23.0.7.zip (More versions at http://developer.android.com/tools/sdk/eclipse-adt.html)
Open Eclipse and follow the following steps:
Help
> Install New Software
> Add
> Archive
Developer Tools
, click Next
, accept any licenses and Finish
After restarting Eclipse, if you are not able to open a layout file go to step 4 but instead of selecting archive add https://dl-ssl.google.com/android/eclipse/ in the Location:
textbox. Press Ok
, update the ADT and restart Eclipse. Close and reopen the layout files and you'll be good to go.
Run the Android SDK Manager to update its components.
https://developer.android.com/studio/tools/sdk/eclipse-adt.html
import java.io.*;
public class FileRead {
public static void main(String[] args) throws IOException {
File f=new File("C:\\Documents and Settings\\abc\\Desktop\\abc.pdf");
OutputStream oos = new FileOutputStream("test.pdf");
byte[] buf = new byte[8192];
InputStream is = new FileInputStream(f);
int c = 0;
while ((c = is.read(buf, 0, buf.length)) > 0) {
oos.write(buf, 0, c);
oos.flush();
}
oos.close();
System.out.println("stop");
is.close();
}
}
The easiest way so far. Hope this helps.
From Java 8 onward you can try the following:
import java.time.*;
import java.time.temporal.ChronoUnit;
Instant start_time = Instant.now();
// Your code
Instant stop_time = Instant.now();
System.out.println(Duration.between(start_time, stop_time).toMillis());
//or
System.out.println(ChronoUnit.MILLIS.between(start_time, stop_time));
I had the same problem on Debian, yarn was the solution for me.
&&
and ||
take scalar inputs and short-circuit always. |
and &
take array inputs and short-circuit only in if/while statements. For assignment, the latter do not short-circuit.
See these doc pages for more information.
Your error looks like you are duplicating an already existing Primary Key in your DB. You should modify your sql code to implement its own primary key by using something like the IDENTITY keyword.
CREATE TABLE [DB] (
[DBId] bigint NOT NULL IDENTITY,
...
CONSTRAINT [DB_PK] PRIMARY KEY ([DB] ASC),
);
select u from UserGroup ug inner join ug.user u
where ug.group_id = :groupId
order by u.lastname
As a named query:
@NamedQuery(
name = "User.findByGroupId",
query =
"SELECT u FROM UserGroup ug " +
"INNER JOIN ug.user u WHERE ug.group_id = :groupId ORDER BY u.lastname"
)
Use paths in the HQL statement, from one entity to the other. See the Hibernate documentation on HQL and joins for details.
You can use Create USer to create a user
CREATE LOGIN sam
WITH PASSWORD = '340$Uuxwp7Mcxo7Khy';
USE AdventureWorks;
CREATE USER sam FOR LOGIN sam;
GO
and to Grant (Read-only access) you can use the following
GRANT SELECT TO sam
Hope that helps.
<div id="divmobile" style="position: fixed; background-color: transparent;
z-index: 1; bottom:5%; right: 0px; width: 50px; text-align:center;" class="div-mobile">
In my opinion it would be better to keep the logic in the controller and pass it to the view to use. This can be done one of two ways using the 'View::make' method. I am currently using Laravel 3 but I am pretty sure that it is the same way in Laravel 4.
public function action_hello($userName)
{
return View::make('hello')->with('name', $userName);
}
or
public function action_hello($first, $last)
{
$data = array(
'forename' => $first,
'surname' => $last
);
return View::make('hello', $data);
}
The 'with' method is chainable. You would then use the above like so:
<p>Hello {{$name}}</p>
More information here:
Members with a constructor will have their default constructor called for initialisation.
You cannot depend on the contents of the other types.
If you are utilizing arrays too much then you should include cstring.h
because it has too many functions including finding substrings.
HTML Code:
<form enctype="multipart/form-data" method="POST" action="">
<label>Your Name <input type="text" name="sender_name" /> </label>
<label>Your Email <input type="email" name="sender_email" /> </label>
<label>Your Contact Number <input type="tel" name="contactnumber" /> </label>
<label>Subject <input type="text" name="subject" /> </label>
<label>Message <textarea name="description"></textarea> </label>
<label>Attachment <input type="file" name="attachment" /></label>
<label><input type="submit" name="button" value="Submit" /></label>
</form>
PHP Code:
<?php
if($_POST['button']){
{
//Server Variables
$server_name = "Your Name";
$server_mail = "[email protected]";
//Name Attributes of HTML FORM
$sender_email = "sender_email";
$sender_name = "sender_name";
$contact = "contactnumber";
$mail_subject = "subject";
$input_file = "attachment";
$message = "description";
//Fetching HTML Values
$sender_name = $_POST[$sender_name];
$sender_mail = $_POST[$sender_email];
$message = $_POST[$message];
$contact= $_POST[$contact];
$mail_subject = $_POST[$mail_subject];
//Checking if File is uploaded
if(isset($_FILES[$input_file]))
{
//Main Content
$main_subject = "Subject seen on server's mail";
$main_body = "Hello $server_name,<br><br>
$sender_name ,contacted you through your website and the details are as below: <br><br>
Name : $sender_name <br>
Contact Number : $contact <br>
Email : $sender_mail <br>
Subject : $mail_subject <br>
Message : $message.";
//Reply Content
$reply_subject = "Subject seen on sender's mail";
$reply_body = "Hello $sender_name,<br>
\t Thank you for filling the contact form. We will revert back to you shortly.<br><br>
This is an auto generated mail sent from our Mail Server.<br>
Please do not reply to this mail.<br>
Regards<br>
$server_name";
//#############################DO NOT CHANGE ANYTHING BELOW THIS LINE#############################
$filename= $_FILES[$input_file]['name'];
$file = chunk_split(base64_encode(file_get_contents($_FILES[$input_file]['tmp_name'])));
$uid = md5(uniqid(time()));
//Sending mail to Server
$retval = mail($server_mail, $main_subject, "--$uid\r\nContent-type:text/html; charset=iso-8859-1\r\nContent-Transfer-Encoding: 7bit\r\n\r\n $main_body \r\n\r\n--$uid\r\nContent-Type: application/octet-stream; name=\"$filename\"\r\nContent-Transfer-Encoding: base64\r\nContent-Disposition: attachment; filename=\"$filename\"\r\n\r\n$file\r\n\r\n--$uid--", "From: $sender_name <$sender_mail>\r\nReply-To: $sender_mail\r\nMIME-Version: 1.0\r\nContent-Type: multipart/mixed; boundary=\"$uid\"\r\n\r\n");
//Sending mail to Sender
$retval = mail($sender_mail, $reply_subject, $reply_body , "From: $server_name<$server_mail>\r\nMIME-Version: 1.0\r\nContent-type: text/html\r\n");
//#############################DO NOT CHANGE ANYTHING ABOVE THIS LINE#############################
//Output
if ($retval == true) {
echo "Message sent successfully...";
echo "<script>window.location.replace('index.html');</script>";
} else {
echo "Error<br>";
echo "Message could not be sent...Try again later";
echo "<script>window.location.replace('index.html');</script>";
}
}else{
echo "Error<br>";
echo "File Not Found";
}
}else{
echo "Error<br>";
echo "Unauthorised Access";
}
I prefer (1) when i define a variable but in expressions i never compare against true and false just take the implicit C definition of if(flag) or if(!flag) or if(ptr). Thats the C way to do things.
If []byte is ASCII byte numbers then first convert the []byte to string and use the strconv
package Atoi
method which convert string to int.
package main
import (
"fmt"
"strconv"
)
func main() {
byteNumber := []byte("14")
byteToInt, _ := strconv.Atoi(string(byteNumber))
fmt.Println(byteToInt)
}
go playground - https://play.golang.org/p/gEzxva8-BGP
You were very close with your original example. You could either use @jAndy's suggestion or:
if (typeof FB != 'undefined')
In core-site.xml:
<configuration>
<property>
<name>fs.defaultFS</name>
<value>hdfs://localhost:9000</value>
</property>
<property>
<name>hadoop.tmp.dir</name>
<value>/home/yourusername/hadoop/tmp/hadoop-${user.name}
</value>
</property>
</configuration>
and format of namenode with :
hdfs namenode -format
worked for hadoop 2.8.1
Install a stable version instead of the latest one, I have downgrade my version to node-v0.10.29-x86.msi
from 'node-v0.10.33-x86.msi'
and it is working well for me!
Basically, this way you combine things because jQuery is a framework which mostly focuses on HTML elements, you basically preventing the default, but at the same time, you stop propagation to bubble up.
So we can simply say, return false in jQuery
is equal to:
return false is e.preventDefault AND e.stopPropagation
But also don't forget it's all in jQuery or DOM related functions, when you run it on the element, basically, it prevents everything from firing including the default behaviour and propagation of the event.
Basically before starting using return false;
, first understand what e.preventDefault();
and e.stopPropagation();
do, then if you think you need both at the same time, then simply use it.
So basically this code below:
$('div').click(function () {
return false;
});
is equal to this code:
$('div').click(function (event) {
event.preventDefault();
event.stopPropagation();
});
As soon as signed and unsigned ints are mixed in an expression things start to get messy and you probably will lose information. Restricting Java to signed ints only really clears things up. I’m glad I don’t have to worry about the whole signed/unsigned business, though I sometimes do miss the 8th bit in a byte.
If you want to change your 'sa' password with SQL Server Management Studio, here are the steps:
Change server authentication mode - Right click on root, choose Properties, from Security tab select "SQL Server and Windows Authentication mode", click OK
Set sa password - Navigate to Security > Logins > sa, right click on it, choose Properties, from General tab set the Password (don't close the window)
Grant permission - Go to Status tab, make sure the Grant and Enabled radiobuttons are chosen, click OK
Restart SQLEXPRESS service from your local services (Window+R > services.msc)
It work for window phone 8.1. You can try this.
Dictionary<string, object> _headerContents = new Dictionary<string, object>();
const String _lineEnd = "\r\n";
const String _twoHyphens = "--";
const String _boundary = "*****";
private async void UploadFile_OnTap(object sender, System.Windows.Input.GestureEventArgs e)
{
Uri serverUri = new Uri("http:www.myserver.com/Mp4UploadHandler", UriKind.Absolute);
string fileContentType = "multipart/form-data";
byte[] _boundarybytes = Encoding.UTF8.GetBytes(_twoHyphens + _boundary + _lineEnd);
byte[] _trailerbytes = Encoding.UTF8.GetBytes(_twoHyphens + _boundary + _twoHyphens + _lineEnd);
Dictionary<string, object> _headerContents = new Dictionary<string, object>();
SetEndHeaders(); // to add some extra parameter if you need
httpWebRequest = (HttpWebRequest)WebRequest.Create(serverUri);
httpWebRequest.ContentType = fileContentType + "; boundary=" + _boundary;
httpWebRequest.Method = "POST";
httpWebRequest.AllowWriteStreamBuffering = false; // get response after upload header part
var fileName = Path.GetFileName(MediaStorageFile.Path);
Stream fStream = (await MediaStorageFile.OpenAsync(Windows.Storage.FileAccessMode.Read)).AsStream(); //MediaStorageFile is a storage file from where you want to upload the file of your device
string fileheaderTemplate = "Content-Disposition: form-data; name=\"{0}\"" + _lineEnd + _lineEnd + "{1}" + _lineEnd;
long httpLength = 0;
foreach (var headerContent in _headerContents) // get the length of upload strem
httpLength += _boundarybytes.Length + Encoding.UTF8.GetBytes(string.Format(fileheaderTemplate, headerContent.Key, headerContent.Value)).Length;
httpLength += _boundarybytes.Length + Encoding.UTF8.GetBytes("Content-Disposition: form-data; name=\"uploadedFile\";filename=\"" + fileName + "\"" + _lineEnd).Length
+ Encoding.UTF8.GetBytes(_lineEnd).Length * 2 + _trailerbytes.Length;
httpWebRequest.ContentLength = httpLength + fStream.Length; // wait until you upload your total stream
httpWebRequest.BeginGetRequestStream((result) =>
{
try
{
HttpWebRequest request = (HttpWebRequest)result.AsyncState;
using (Stream stream = request.EndGetRequestStream(result))
{
foreach (var headerContent in _headerContents)
{
WriteToStream(stream, _boundarybytes);
WriteToStream(stream, string.Format(fileheaderTemplate, headerContent.Key, headerContent.Value));
}
WriteToStream(stream, _boundarybytes);
WriteToStream(stream, "Content-Disposition: form-data; name=\"uploadedFile\";filename=\"" + fileName + "\"" + _lineEnd);
WriteToStream(stream, _lineEnd);
int bytesRead = 0;
byte[] buffer = new byte[2048]; //upload 2K each time
while ((bytesRead = fStream.Read(buffer, 0, buffer.Length)) != 0)
{
stream.Write(buffer, 0, bytesRead);
Array.Clear(buffer, 0, 2048); // Clear the array.
}
WriteToStream(stream, _lineEnd);
WriteToStream(stream, _trailerbytes);
fStream.Close();
}
request.BeginGetResponse(a =>
{ //get response here
try
{
var response = request.EndGetResponse(a);
using (Stream streamResponse = response.GetResponseStream())
using (var memoryStream = new MemoryStream())
{
streamResponse.CopyTo(memoryStream);
responseBytes = memoryStream.ToArray(); // here I get byte response from server. you can change depends on server response
}
if (responseBytes.Length > 0 && responseBytes[0] == 1)
MessageBox.Show("Uploading Completed");
else
MessageBox.Show("Uploading failed, please try again.");
}
catch (Exception ex)
{}
}, null);
}
catch (Exception ex)
{
fStream.Close();
}
}, httpWebRequest);
}
private static void WriteToStream(Stream s, string txt)
{
byte[] bytes = Encoding.UTF8.GetBytes(txt);
s.Write(bytes, 0, bytes.Length);
}
private static void WriteToStream(Stream s, byte[] bytes)
{
s.Write(bytes, 0, bytes.Length);
}
private void SetEndHeaders()
{
_headerContents.Add("sId", LocalData.currentUser.SessionId);
_headerContents.Add("uId", LocalData.currentUser.UserIdentity);
_headerContents.Add("authServer", LocalData.currentUser.AuthServerIP);
_headerContents.Add("comPort", LocalData.currentUser.ComPort);
}
elementToBeClickable
is used for checking an element is visible and enabled such that you can click it.
ExpectedConditions.elementToBeClickable
returns WebElement
if expected condition is true otherwise it will throw TimeoutException
, It never returns null
.
So if your using ExpectedConditions.elementToBeClickable
to find an element which will always gives you the clickable element, so no need to check for null
condition, you should try as below :-
WebDriverWait wait = new WebDriverWait(Scenario1Test.driver, 10);
WebElement element = wait.until(ExpectedConditions.elementToBeClickable(By.xpath("(//div[@id='brandSlider']/div[1]/div/div/div/img)[50]")));
element.click();
As you are saying element.click()
passes both on link
and label
that's doesn't mean element is not clickable, it means returned element clicked
but may be there is no event performs on element by click action.
Note:- I'm suggesting you always try first to find elements by id
, name
, className
and other locator. if you faced some difficulty to find then use cssSelector
and always give last priority to xpath
locator because it is slower than other locator to locate an element.
Hope it helps you..:)
You can't actually render markup inside a textarea.
But, you can fake it by carefully positioning a div behind the textarea and adding your highlight markup there.
JavaScript takes care of syncing the content and scroll position.
var $container = $('.container');
var $backdrop = $('.backdrop');
var $highlights = $('.highlights');
var $textarea = $('textarea');
var $toggle = $('button');
var ua = window.navigator.userAgent.toLowerCase();
var isIE = !!ua.match(/msie|trident\/7|edge/);
var isWinPhone = ua.indexOf('windows phone') !== -1;
var isIOS = !isWinPhone && !!ua.match(/ipad|iphone|ipod/);
function applyHighlights(text) {
text = text
.replace(/\n$/g, '\n\n')
.replace(/[A-Z].*?\b/g, '<mark>$&</mark>');
if (isIE) {
// IE wraps whitespace differently in a div vs textarea, this fixes it
text = text.replace(/ /g, ' <wbr>');
}
return text;
}
function handleInput() {
var text = $textarea.val();
var highlightedText = applyHighlights(text);
$highlights.html(highlightedText);
}
function handleScroll() {
var scrollTop = $textarea.scrollTop();
$backdrop.scrollTop(scrollTop);
var scrollLeft = $textarea.scrollLeft();
$backdrop.scrollLeft(scrollLeft);
}
function fixIOS() {
$highlights.css({
'padding-left': '+=3px',
'padding-right': '+=3px'
});
}
function bindEvents() {
$textarea.on({
'input': handleInput,
'scroll': handleScroll
});
}
if (isIOS) {
fixIOS();
}
bindEvents();
handleInput();
_x000D_
@import url(https://fonts.googleapis.com/css?family=Open+Sans);
*,
*::before,
*::after {
box-sizing: border-box;
}
body {
margin: 30px;
background-color: #fff;
caret-color: #000;
}
.container,
.backdrop,
textarea {
width: 460px;
height: 180px;
}
.highlights,
textarea {
padding: 10px;
font: 20px/28px 'Open Sans', sans-serif;
letter-spacing: 1px;
}
.container {
display: block;
margin: 0 auto;
transform: translateZ(0);
-webkit-text-size-adjust: none;
}
.backdrop {
position: absolute;
z-index: 1;
border: 2px solid #685972;
background-color: #fff;
overflow: auto;
pointer-events: none;
transition: transform 1s;
}
.highlights {
white-space: pre-wrap;
word-wrap: break-word;
color: #000;
}
textarea {
display: block;
position: absolute;
z-index: 2;
margin: 0;
border: 2px solid #74637f;
border-radius: 0;
color: transparent;
background-color: transparent;
overflow: auto;
resize: none;
transition: transform 1s;
}
mark {
border-radius: 3px;
color: red;
background-color: transparent;
}
_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="container">
<div class="backdrop">
<div class="highlights"></div>
</div>
<textarea>All capitalized Words will be highlighted. Try Typing to see how it Works</textarea>
</div>
_x000D_
Original Pen: https://codepen.io/lonekorean/pen/gaLEMR
You are falling for a subtle quirk. You cannot re-assign module-level variables inside a python function. I think this is there to stop people re-assigning stuff inside a function by accident.
You can access the module namespace, you just shouldn't try to re-assign. If your function assigns something, it automatically becomes a function variable - and python won't look in the module namespace.
You can do:
__DB_NAME__ = None
def func():
if __DB_NAME__:
connect(__DB_NAME__)
else:
connect(Default_value)
but you cannot re-assign __DB_NAME__
inside a function.
One workaround:
__DB_NAME__ = [None]
def func():
if __DB_NAME__[0]:
connect(__DB_NAME__[0])
else:
__DB_NAME__[0] = Default_value
Note, I'm not re-assigning __DB_NAME__
, I'm just modifying its contents.
I had to do brew link --overwrite node
after brew install node
to update from 0.4 to 0.8.18
In general, sizeof(pretty much anything) will change when you compile on different platforms. On a 32 bit platform, pointers are always the same size. On other platforms (64 bit being the obvious example) this can change.
More easy and without addition modules
Math.random().toString(26).slice(2)
No, you can't.
There's no reason why you would need to. This is a one-time operation and so takes only an additional second or two to actually type and execute.
If you're adding columns in your web application this is more indicative of a flaw in your data-model as you shouldn't need to be doing it.
In response to your comment that a comment is a column attribute; it may seem so but behind the scenes Oracle stores this as an attribute of an object.
SQL> desc sys.com$
Name Null? Type
----------------------------------------- -------- ----------------------------
OBJ# NOT NULL NUMBER
COL# NUMBER
COMMENT$ VARCHAR2(4000)
SQL>
The column is optional and sys.col$
does not contain comment information.
I assume, I have no knowledge, that this was done in order to only have one system of dealing with comments rather than multiple.
It looks as though it's not an array but an arbitrary object. If you have control over the PHP serialization, you might be able to change that.
As raina77ow pointed out, one way to do this in PHP would be by replacing something like this:
json_encode($something)
with something like:
json_encode(array_values($something))
But don't ignore the other answers here about Object.keys
. They should also accomplish what you want if you don't have the ability or the desire to change the serialization of your object.
var obj = [
{"name": "Afghanistan", "code": "AF"},
{"name": "Åland Islands", "code": "AX"},
{"name": "Albania", "code": "AL"},
{"name": "Algeria", "code": "DZ"}
];
// the code you're looking for
var needle = 'AL';
// iterate over each element in the array
for (var i = 0; i < obj.length; i++){
// look for the entry with a matching `code` value
if (obj[i].code == needle){
// we found it
// obj[i].name is the matched result
}
}
>>
is arithmetic shift right, >>>
is logical shift right.
In an arithmetic shift, the sign bit is extended to preserve the signedness of the number.
For example: -2 represented in 8 bits would be 11111110
(because the most significant bit has negative weight). Shifting it right one bit using arithmetic shift would give you 11111111
, or -1. Logical right shift, however, does not care that the value could possibly represent a signed number; it simply moves everything to the right and fills in from the left with 0s. Shifting our -2 right one bit using logical shift would give 01111111
.
Make sure you also use your intermediate crt (.crt file with a bundle.. some providers also call it bundle or ca certificate). then in your ssl.conf,
SSLCertificateFile </path/for/actual/certificate>
SSLCACertificateFile </path/for/actual/intermediate_certificate>
then restart your webserver :ex for apache use :
sudo service httpd restart
I don't like all the solutions that use magic numbers like 97
or 36
.
const A = 'A'.charCodeAt(0);
let numberToCharacter = number => String.fromCharCode(A + number);
let characterToNumber = character => character.charCodeAt(0) - A;
this assumes uppercase letters and starts 'A' at 0.
I have similar issue faced and solve with following solution: my date format is: 'Fri Dec 11 2020 05:00:00 GMT+0500 (Pakistan Standard Time)'
let currentDate = moment(new Date('Fri Dec 11 2020 05:00:00 GMT+0500 (Pakistan Standard Time)').format('DD-MM-YYYY'); // 'Fri Dec 11 2020 05:00:00 GMT+0500 (Pakistan Standard Time)'
let output=(moment(currentDate).isSameOrAfter('07-12-2020'));
You could only convert a JSON array into a CSV file.
Lets say, you have a JSON like the following :
{"infile": [{"field1": 11,"field2": 12,"field3": 13},
{"field1": 21,"field2": 22,"field3": 23},
{"field1": 31,"field2": 32,"field3": 33}]}
Lets see the code for converting it to csv :
import java.io.File;
import java.io.IOException;
import org.apache.commons.io.FileUtils;
import org.json.CDL;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
public class JSON2CSV {
public static void main(String myHelpers[]){
String jsonString = "{\"infile\": [{\"field1\": 11,\"field2\": 12,\"field3\": 13},{\"field1\": 21,\"field2\": 22,\"field3\": 23},{\"field1\": 31,\"field2\": 32,\"field3\": 33}]}";
JSONObject output;
try {
output = new JSONObject(jsonString);
JSONArray docs = output.getJSONArray("infile");
File file=new File("/tmp2/fromJSON.csv");
String csv = CDL.toString(docs);
FileUtils.writeStringToFile(file, csv);
} catch (JSONException e) {
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
Now you got the CSV generated from JSON.
It should look like this:
field1,field2,field3
11,22,33
21,22,23
31,32,33
The maven dependency was like,
<dependency>
<groupId>org.json</groupId>
<artifactId>json</artifactId>
<version>20090211</version>
</dependency>
Update Dec 13, 2019:
Updating the answer, since now we can support complex JSON Arrays as well.
import java.nio.file.Files;
import java.nio.file.Paths;
import com.github.opendevl.JFlat;
public class FlattenJson {
public static void main(String[] args) throws Exception {
String str = new String(Files.readAllBytes(Paths.get("path_to_imput.json")));
JFlat flatMe = new JFlat(str);
//get the 2D representation of JSON document
flatMe.json2Sheet().headerSeparator("_").getJsonAsSheet();
//write the 2D representation in csv format
flatMe.write2csv("path_to_output.csv");
}
}
dependency and docs details are in link
First give your input type submit a name, like this name='submitform'
.
and then put this in your php file
if (isset($_POST['submitform']))
{
?>
<script type="text/javascript">
window.location = "http://www.google.com/";
</script>
<?php
}
Don't forget to change the url to yours.
No, if you are debugging an app without other users use the Build > Build APK(s) menu in Android Studio or execute it in your device/emulator them the debug release apk will install automatically. If you are debugging an app with others use Build > Generate Signed APK... menu. If you want to publish the beta version use the Google Play Store. Your APK(s) will be in app\build\outputs\apk\debug
and app\release
folders.
width = 10
x = 5
print "%0*d" % (width, x)
> 0000000005
See the print documentation for all the exciting details!
Update for Python 3.x (7.5 years later)
That last line should now be:
print("%0*d" % (width, x))
I.e. print()
is now a function, not a statement. Note that I still prefer the Old School printf()
style because, IMNSHO, it reads better, and because, um, I've been using that notation since January, 1980. Something ... old dogs .. something something ... new tricks.
Too late for the OP of course, but still... Rearranging the expression as:
int bmi = (10000 * weight) / (height * height)
Eliminates all the floating point, and converts a division by a constant to a multiplication, which should execute faster. Integer precision is probably adequate for this application, but if it is not then:
double bmi = (10000.0 * weight) / (height * height)
would still be an improvement.
You can use df.dropDuplicates(['col1','col2'])
to get only distinct rows based on colX in the array.
If you want to automate the creating of a custom divergent colormap commonly used for surface plots, this module combined with @unutbu method worked well for me.
def diverge_map(high=(0.565, 0.392, 0.173), low=(0.094, 0.310, 0.635)):
'''
low and high are colors that will be used for the two
ends of the spectrum. they can be either color strings
or rgb color tuples
'''
c = mcolors.ColorConverter().to_rgb
if isinstance(low, basestring): low = c(low)
if isinstance(high, basestring): high = c(high)
return make_colormap([low, c('white'), 0.5, c('white'), high])
The high and low values can be either string color names or rgb tuples. This is the result using the surface plot demo:
Using base graphics, we can use at =
to control box position , combined with boxwex =
for the width of the boxes. The 1st boxplot
statement creates a blank plot. Then add the 2 traces in the following two statements.
Note that in the following, we use df[,-1]
to exclude the 1st (id) column from the values to plot. With different data frames, it may be necessary to change this to subset for whichever columns contain the data you want to plot.
boxplot(df[,-1], boxfill = NA, border = NA) #invisible boxes - only axes and plot area
boxplot(df[df$id=="Good", -1], xaxt = "n", add = TRUE, boxfill="red",
boxwex=0.25, at = 1:ncol(df[,-1]) - 0.15) #shift these left by -0.15
boxplot(df[df$id=="Bad", -1], xaxt = "n", add = TRUE, boxfill="blue",
boxwex=0.25, at = 1:ncol(df[,-1]) + 0.15) #shift to the right by +0.15
Some dummy data:
df <- data.frame(
id = c(rep("Good",200), rep("Bad", 200)),
F1 = c(rnorm(200,10,2), rnorm(200,8,1)),
F2 = c(rnorm(200,7,1), rnorm(200,6,1)),
F3 = c(rnorm(200,6,2), rnorm(200,9,3)),
F4 = c(rnorm(200,12,3), rnorm(200,8,2)))
Since the question asked for either jQuery or vanilla JS, here's an answer with vanilla JS.
I've added some CSS to the demo below to change the button's font color to red when its aria-expanded
is set to true
const button = document.querySelector('button');_x000D_
_x000D_
button.addEventListener('click', () => {_x000D_
button.ariaExpanded = !JSON.parse(button.ariaExpanded);_x000D_
})
_x000D_
button[aria-expanded="true"] {_x000D_
color: red;_x000D_
}
_x000D_
<button type="button" aria-expanded="false">Click me!</button>
_x000D_
I saw a article via link. There are four methods, I just did a short summary here for helping other programmers.
EXEC sp_helptext 'sp_name';
SELECT OBJECT_ID('sp_name')
SELECT OBJECT_DEFINITION( OBJECT_ID('sp_name') ) AS [Definition];
SELECT * FROM sys.sql_modules WHERE object_id = object_id('sp_name');
Wade73's answer for decimals doesn't quite work. I've modified it to allow only a single decimal point.
declare @MyTable table(MyVar nvarchar(10));
insert into @MyTable (MyVar)
values
(N'1234')
, (N'000005')
, (N'1,000')
, (N'293.8457')
, (N'x')
, (N'+')
, (N'293.8457.')
, (N'......');
-- This shows that Wade73's answer allows some non-numeric values to slip through.
select * from (
select
MyVar
, case when MyVar not like N'%[^0-9.]%' then 1 else 0 end as IsNumber
from
@MyTable
) t order by IsNumber;
-- Notice the addition of "and MyVar not like N'%.%.%'".
select * from (
select
MyVar
, case when MyVar not like N'%[^0-9.]%' and MyVar not like N'%.%.%' then 1 else 0 end as IsNumber
from
@MyTable
) t
order by IsNumber;
Try this
--Generate number from 2 to 90
;with numcte as(
select 2 as rn
union all
select rn+1 from numcte where rn<90)
--Program that formats the number based on length
select case when LEN(rn) = 1 then '00'+CAST(rn as varchar(10)) else CAST(rn as varchar(10)) end number
from numcte
Partial Output:
number
002
003
004
005
006
007
008
009
10
11
12
13
14
15
16
17
18
19
20
In my case renaming the controller to a different name solved the problem.
There was a conflict of controller names with "angular-ui-tree" module: I renamed my controller from "CatalogerTreeController" to "TreeController" and then this controller starts to be initiated twice on the page where "ui-tree" directive used because this directive uses controller named "TreeController".
Reorient your mental model of the functionality of "CASCADE" by thinking of adding a FK to an already existing cascade (i.e. a waterfall). The source of this waterfall is a primary key (PK). Deletes flow down.
So if you define a FK's on_delete as "CASCADE," you're adding this FK's record to a cascade of deletes originating from the PK. The FK's record may participate in this cascade or not ("SET_NULL"). In fact, a record with a FK may even prevent the flow of the deletes! Build a dam with "PROTECT."
I have also come across this need for my database project. I decided to share my findings here.
1) There is no way to a NOT NULL field without a default when data already exists (Can I add a not null column without DEFAULT value)
2) This topic has been addressed for a long time. Here is a 2008 question (Add a column with a default value to an existing table in SQL Server)
3) The DEFAULT constraint is used to provide a default value for a column. The default value will be added to all new records IF no other value is specified. (https://www.w3schools.com/sql/sql_default.asp)
4) The Visual Studio Database Project that I use for development is really good about generating change scripts for you. This is the change script created for my DB promotion:
GO
PRINT N'Altering [dbo].[PROD_WHSE_ACTUAL]...';
GO
ALTER TABLE [dbo].[PROD_WHSE_ACTUAL]
ADD [DATE] DATE DEFAULT getdate() NOT NULL;
-
Here are the steps I took to update my database using Visual Studio for development.
1) Add default value (Visual Studio SSDT: DB Project: table designer)
2) Use the Schema Comparison tool to generate the change script.
code already provided above
window.history.back();
Sometimes it's an issue with javascript compatibility with ajax call or design-related challenges.
I would use this below function for go back with the refresh.
function GoBackWithRefresh(event) {
if ('referrer' in document) {
window.location = document.referrer;
/* OR */
//location.replace(document.referrer);
} else {
window.history.back();
}
}
In your html, use:
<a href="#" onclick="GoBackWithRefresh();return false;">BACK</a>`
For more customization you can use history.js plugins.
function unionArray(arrayA, arrayB) {_x000D_
var obj = {},_x000D_
i = arrayA.length,_x000D_
j = arrayB.length,_x000D_
newArray = [];_x000D_
while (i--) {_x000D_
if (!(arrayA[i] in obj)) {_x000D_
obj[arrayA[i]] = true;_x000D_
newArray.push(arrayA[i]);_x000D_
}_x000D_
}_x000D_
while (j--) {_x000D_
if (!(arrayB[j] in obj)) {_x000D_
obj[arrayB[j]] = true;_x000D_
newArray.push(arrayB[j]);_x000D_
}_x000D_
}_x000D_
return newArray;_x000D_
}_x000D_
var unionArr = unionArray([34, 35, 45, 48, 49], [44, 55]);_x000D_
console.log(unionArr);
_x000D_
The ASCII value of Space
is 32. So you can compare your char to the octal value of 32 which is 40 or its hexadecimal value which is 20.
if(c == '\40')
{ ... }
or
if(c == '\x20')
{ ... }
Any number after the \
is assumed to be octal, if the character just after \
is not x
, in which case it is considered to be a hexadecimal.
there's nothing wrong with using CHAR like that..
I think your problem is that you have a space in your tablename. It should be: charteredflight
or chartered_flight
..
<DockPanel>
<Menu DockPanel.Dock="Top">
<MenuItem Header="_File">
<MenuItem Header="_Open"/>
<MenuItem Header="_Close"/>
<MenuItem Header="_Save"/>
</MenuItem>
</Menu>
<StackPanel></StackPanel>
</DockPanel>
Maybe not better but in my opinion more readable is to create an extension method
public static bool IsNull(this object obj) {
return obj == null;
}
To make sure that the current object's members are used. Cases where thread safety is a concern, some applications may change the wrong objects member values, for that reason this should be applied to the member so that the correct object member value is used.
If your object is not concerned with thread safety then there is no reason to specify which object member's value is used.
You are accessing an object that is not defined.
The solution is check for null or undefined (to see whether the object exists) and only then iterate.
You should try this way. It will definitely work.
(function() {
var app = angular.module('myApp', []);
app.controller('myController', ['$scope', function($scope) {
$scope.myText = "Object Push inside ";
$scope.arrayText = [
];
$scope.addText = function() {
$scope.arrayText.push(this.myText);
}
}]);
})();
In your case $scope.arrayText
is an object. You should initialize as a array.
I searched for this, and none of the answers are correct for my case, so I've created a function that will return false if one's eyes can't see the element
jQuery.fn.extend({
isvisible: function() {
//
// This function call this: $("div").isvisible()
// Return true if the element is visible
// Return false if the element is not visible for our eyes
//
if ( $(this).css('display') == 'none' ){
console.log("this = " + "display:none");
return false;
}
else if( $(this).css('visibility') == 'hidden' ){
console.log("this = " + "visibility:hidden");
return false;
}
else if( $(this).css('opacity') == '0' ){
console.log("this = " + "opacity:0");
return false;
}
else{
console.log("this = " + "Is Visible");
return true;
}
}
});
.Exe
's and .dll
's are both assemblies. The key difference is that executeables define an entry point Main
which can be invoked by the runtime. The error
"Class library cannot be started directly"
is due to the fact that said .dll
's do not have a Main
. To fix this issue, change the project type to a Windows application/Console application and define an entry point. Or, add a new project that is of type Windows application/Console application and reference said .dll
.
By using below code I'm able to get my app foreground or background state.
For more detail about it's working, strong text click here
import android.content.ComponentCallbacks2;
import android.content.Context;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
private Context context;
private Toast toast;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
context = this;
}
private void showToast(String message) {
//If toast is already showing cancel it
if (toast != null) {
toast.cancel();
}
toast = Toast.makeText(context, message, Toast.LENGTH_SHORT);
toast.show();
}
@Override
protected void onStart() {
super.onStart();
showToast("App In Foreground");
}
@Override
public void onTrimMemory(int level) {
super.onTrimMemory(level);
if (level == ComponentCallbacks2.TRIM_MEMORY_UI_HIDDEN) {
showToast("App In Background");
}
}
}
As an alternative representation you could use
[in] '%s' % hex(15)
[out]'0xf'
Just in case it helps: there is a way to edit a symlink with midnight commander (mc). The menu command is (in French on my mc interface):
Fichier / Éditer le lien symbolique
which may be translated to:
File / Edit symbolic link
The shortcut is C-x C-s
Maybe it internally uses the ln --force
command, I don't know.
Now, I'm trying to find a way to edit a whole lot of symlinks at once (that's how I arrived here).
Extend jQuery:
(function($) {
$.fn.outerHTML = function() {
return $(this).clone().wrap('<div></div>').parent().html();
};
})(jQuery);
And use it like this: $("#myTableRow").outerHTML();
See ?merge
:
the name "row.names" or the number 0 specifies the row names.
Example:
R> de <- merge(d, e, by=0, all=TRUE) # merge by row names (by=0 or by="row.names")
R> de[is.na(de)] <- 0 # replace NA values
R> de
Row.names a b c d e f g h i j k l m n o p q r s
1 1 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10 11 12 13 14 15 16 17 18 19
2 2 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 0 0 0 0 0 0 0 0 0
3 3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 21 22 23 24 25 26 27 28 29
t
1 20
2 0
3 30
in your
WebApiConfig
>> Register ()
You have to change to
config.Routes.MapHttpRoute(
name: "DefaultApi",
routeTemplate: "api/{controller}/{action}/{id}",
defaults: new { id = RouteParameter.Optional }
Here the routeTemplate
, is added with {action}
All you need to do is look at the example here
You will find that in line 295 the page is always set to 1 so that it is scrollable
and that the count of pages is 3 in getCount()
method.
Those are the 2 main things you need to change, the rest is your logic and you can handle them differently.
Just make a personal counter that counts the real page you are on because position will no longer be usable after always setting current page to 1 on line 295.
p.s. this code is not mine it was referenced in the question you linked in your question
IF YOU ARE BUILDING FROM SCRATCH, GO THROUGH THIS
You get No module named cv2.cv
.
Son, you did all step right, since your sudo make install
gave no errors.
However look at this step
$ cd ~/.virtualenvs/cv/lib/python2.7/site-packages/
$ ln -s /usr/local/lib/python2.7/site-packages/cv2.so cv2.so
THE VERY IMPORTANT STEP OF ALL THESE IS TO LINK IT.
ln -s /usr/local/lib/python2.7/site-packages/cv2.so cv2.so
or
ln -s /usr/local/lib/python2.7/dist-packages/cv2.so cv2.so
The moment you choose wise linking, or by brute force just find the cv2.so file if that exist or not
Here I am throwing my output.
Successfully installed numpy-1.15.3
(cv) demonLover-desktop:~$ cd ~/.virtualenvs/cv/lib/python2.7/site-packages/
(cv) demonLover-desktop:~/.virtualenvs/cv/lib/python2.7/site-packages$ ln -s /usr/local/lib/python2.7/site-packages/cv2.so cv2.so
(cv) demonLover-desktop:~/.virtualenvs/cv/lib/python2.7/site-packages$ pip list
Package Version
---------- -------
numpy 1.15.3
pip 18.1
setuptools 40.5.0
wheel 0.32.2
(cv) demonLover-desktop:~/.virtualenvs/cv/lib/python2.7/site-packages$ python
Python 2.7.12 (default, Dec 4 2017, 14:50:18)
[GCC 5.4.0 20160609] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import cv2
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: No module named cv2
>>>
[2]+ Stopped python
(cv) demonLover-desktop:~/.virtualenvs/cv/lib/python2.7/site-packages$ ls /usr/local/lib/python2.7/site-packages/c
ls: cannot access '/usr/local/lib/python2.7/site-packages/c': No such file or directory
(cv) demonLover-desktop:~/.virtualenvs/cv/lib/python2.7/site-packages$ ls /usr/local/lib/python2.7/site-packages/
(cv) demonLover-desktop:~/.virtualenvs/cv/lib/python2.7/site-packages$ deactivate
demonLover-desktop:~/.virtualenvs/cv/lib/python2.7/site-packages$ ls /usr/local/lib/python2.7/site-packages/
demonLover-desktop:~/.virtualenvs/cv/lib/python2.7/site-packages$ ls
cv2.so easy_install.py easy_install.pyc numpy numpy-1.15.3.dist-info pip pip-18.1.dist-info pkg_resources setuptools setuptools-40.5.0.dist-info wheel wheel-0.32.2.dist-info
demonLover-desktop:~/.virtualenvs/cv/lib/python2.7/site-packages$ ls /usr/local/lib/python2.7/site-packages/
demonLover-desktop:~/.virtualenvs/cv/lib/python2.7/site-packages$ ls -l /usr/local/lib/python2.7/site-packages/
total 0
demonLover-desktop:~/.virtualenvs/cv/lib/python2.7/site-packages$ ls
cv2.so easy_install.py easy_install.pyc numpy numpy-1.15.3.dist-info pip pip-18.1.dist-info pkg_resources setuptools setuptools-40.5.0.dist-info wheel wheel-0.32.2.dist-info
demonLover-desktop:~/.virtualenvs/cv/lib/python2.7/site-packages$ workon cv
(cv) demonLover-desktop:~/.virtualenvs/cv/lib/python2.7/site-packages$ python
Python 2.7.12 (default, Dec 4 2017, 14:50:18)
[GCC 5.4.0 20160609] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import cv2
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: No module named cv2
>>>
[3]+ Stopped python
(cv) demonLover-desktop:~/.virtualenvs/cv/lib/python2.7/site-packages$ find / -name "cv2.so"
find: ‘/lost+found’: Permission denied
find: ‘/run/udisks2’: Permission denied
find: ‘/run/docker’: Permission denied
find: ‘/run/exim4’: Permission denied
find: ‘/run/lightdm’: Permission denied
find: ‘/run/cups/certs’: Permission denied
find: ‘/run/sudo’: Permission denied
find: ‘/run/samba/ncalrpc/np’: Permission denied
find: ‘/run/postgresql/9.5-main.pg_stat_tmp’: Permission denied
find: ‘/run/postgresql/10-main.pg_stat_tmp’: Permission denied
find: ‘/run/lvm’: Permission denied
find: ‘/run/systemd/inaccessible’: Permission denied
find: ‘/run/lock/lvm’: Permission denied
find: ‘/root’: Permission denied
^C
(cv) demonLover-desktop:~/.virtualenvs/cv/lib/python2.7/site-packages$ sudofind / -name "cv2.so"
sudofind: command not found
(cv) demonLover-desktop:~/.virtualenvs/cv/lib/python2.7/site-packages$ ^C
(cv) demonLover-desktop:~/.virtualenvs/cv/lib/python2.7/site-packages$ sudo find / -name "cv2.so"
[sudo] password for app:
find: ‘/run/user/1000/gvfs’: Permission denied
^C
(cv) demonLover-desktop:~/.virtualenvs/cv/lib/python2.7/site-packages$ sudo find /usr/ -name "cv2.so"
/usr/local/lib/python2.7/dist-packages/cv2.so
^C
(cv) demonLover-desktop:~/.virtualenvs/cv/lib/python2.7/site-packages$ ln -s /usr/local/lib/python2.7/dist-packages/ccv2.so cv2.so
click/ clonevirtualenv.pyc configparser-3.5.0.dist-info/ configparser.py cv2.so cycler.py
clonevirtualenv.py concurrent/ configparser-3.5.0-nspkg.pth configparser.pyc cycler-0.10.0.dist-info/ cycler.pyc
(cv) demonLover-desktop:~/.virtualenvs/cv/lib/python2.7/site-packages$ ln -s /usr/local/lib/python2.7/dist-packages/cv2.so cv2.so
ln: failed to create symbolic link 'cv2.so': File exists
(cv) demonLover-desktop:~/.virtualenvs/cv/lib/python2.7/site-packages$ rm cv2.so
(cv) demonLover-desktop:~/.virtualenvs/cv/lib/python2.7/site-packages$ ln -s /usr/local/lib/python2.7/dist-packages/cv2.so cv2.so
(cv) demonLover-desktop:~/.virtualenvs/cv/lib/python2.7/site-packages$ ls
cv2.so easy_install.py easy_install.pyc numpy numpy-1.15.3.dist-info pip pip-18.1.dist-info pkg_resources setuptools setuptools-40.5.0.dist-info wheel wheel-0.32.2.dist-info
(cv) demonLover-desktop:~/.virtualenvs/cv/lib/python2.7/site-packages$ python
Python 2.7.12 (default, Dec 4 2017, 14:50:18)
[GCC 5.4.0 20160609] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import cv2
>>>
My step will only help, if your built is done right.
If it's always going to be an even LHS/RHS split, you can also use the partition
method that's built into strings. It returns a 3-tuple as (LHS, separator, RHS)
if the separator is found, and (original_string, '', '')
if the separator wasn't present:
>>> "2.7.0_bf4fda703454".partition('_')
('2.7.0', '_', 'bf4fda703454')
>>> "shazam".partition("_")
('shazam', '', '')
My 2 cents, from a current implementation Point of View and for SWIG users on k8 (x86_64) architecture.
First long long
and long int
are different types
but sizeof(long long) == sizeof(long int) == sizeof(int64_t)
First try to find where and how the compiler define int64_t and uint64_t
grepc -rn "typedef.*INT64_TYPE" /lib/gcc
/lib/gcc/x86_64-linux-gnu/9/include/stdint-gcc.h:43:typedef __INT64_TYPE__ int64_t;
/lib/gcc/x86_64-linux-gnu/9/include/stdint-gcc.h:55:typedef __UINT64_TYPE__ uint64_t;
So we need to find this compiler macro definition
gcc -dM -E -x c /dev/null | grep __INT64
#define __INT64_C(c) c ## L
#define __INT64_MAX__ 0x7fffffffffffffffL
#define __INT64_TYPE__ long int
gcc -dM -E -x c++ /dev/null | grep __INT64
#define __INT64_C(c) c ## L
#define __INT64_MAX__ 0x7fffffffffffffffL
#define __INT64_TYPE__ long int
clang -dM -E -x c++ /dev/null | grep INT64_TYPE
#define __INT64_TYPE__ long int
#define __UINT64_TYPE__ long unsigned int
Clang, GNU compilers:
-dM
dumps a list of macros.
-E
prints results to stdout instead of a file.
-x c
and -x c++
select the programming language when using a file without a filename extension, such as /dev/null
note: for swig user, on Linux x86_64 use -DSWIGWORDSIZE64
On Catalina 10.15 IIRC
clang -dM -E -x c++ /dev/null | grep INT64_TYPE
#define __INT64_TYPE__ long long int
#define __UINT64_TYPE__ long long unsigned int
Clang:
-dM
dumps a list of macros.
-E
prints results to stdout instead of a file.
-x c
and -x c++
select the programming language when using a file without a filename extension, such as /dev/null
note: for swig user, on macOS x86_64 don't use -DSWIGWORDSIZE64
First
sizeof(long int) == 4
and sizeof(long long) == 8
in stdint.h
we have:
#if _VCRT_COMPILER_PREPROCESSOR
typedef signed char int8_t;
typedef short int16_t;
typedef int int32_t;
typedef long long int64_t;
typedef unsigned char uint8_t;
typedef unsigned short uint16_t;
typedef unsigned int uint32_t;
typedef unsigned long long uint64_t;
note: for swig user, on windows x86_64 don't use -DSWIGWORDSIZE64
First see https://github.com/swig/swig/blob/3a329566f8ae6210a610012ecd60f6455229fe77/Lib/stdint.i#L20-L24 so you can control the typedef using SWIGWORDSIZE64
but...
now the bad: SWIG Java and SWIG CSHARP do not take it into account
So you may want to use
#if defined(SWIGJAVA)
#if defined(SWIGWORDSIZE64)
%define PRIMITIVE_TYPEMAP(NEW_TYPE, TYPE)
%clear NEW_TYPE;
%clear NEW_TYPE *;
%clear NEW_TYPE &;
%clear const NEW_TYPE &;
%apply TYPE { NEW_TYPE };
%apply TYPE * { NEW_TYPE * };
%apply TYPE & { NEW_TYPE & };
%apply const TYPE & { const NEW_TYPE & };
%enddef // PRIMITIVE_TYPEMAP
PRIMITIVE_TYPEMAP(long int, long long);
PRIMITIVE_TYPEMAP(unsigned long int, long long);
#undef PRIMITIVE_TYPEMAP
#endif // defined(SWIGWORDSIZE64)
#endif // defined(SWIGJAVA)
and
#if defined(SWIGCSHARP)
#if defined(SWIGWORDSIZE64)
%define PRIMITIVE_TYPEMAP(NEW_TYPE, TYPE)
%clear NEW_TYPE;
%clear NEW_TYPE *;
%clear NEW_TYPE &;
%clear const NEW_TYPE &;
%apply TYPE { NEW_TYPE };
%apply TYPE * { NEW_TYPE * };
%apply TYPE & { NEW_TYPE & };
%apply const TYPE & { const NEW_TYPE & };
%enddef // PRIMITIVE_TYPEMAP
PRIMITIVE_TYPEMAP(long int, long long);
PRIMITIVE_TYPEMAP(unsigned long int, unsigned long long);
#undef PRIMITIVE_TYPEMAP
#endif // defined(SWIGWORDSIZE64)
#endif // defined(SWIGCSHARP)
So int64_t
aka long int
will be bind to Java/C# long
on Linux...
Just move to the new branch. The uncommited changes get carried over.
git checkout -b ABC_1
git commit -m <message>
Thank you, Erik, for posting this. This worked for me. I'd like to add a note about an extra step I needed. Within "Payload/Application.app/" there was a directory named "CACertChains" that contained a file named "cacert.pem". I had to remove the directory and the .pem to complete these steps. Thanks again! –
In Target>Build Setting>Product name field you can edit that field here.
After that I would like to select another number from the remaining numbers of the list (N-1) and then use that also.
Then you arguably do not really want to create a list of numbers from 1 to N just for the purpose of picking one (why not just ask for a random number in that range directly, instead of explicitly creating it to choose from?), but instead to shuffle such a list. Fortunately, the random
module has you covered for this, too: just use random.shuffle
.
Of course, if you have a huge list of numbers and you only want to draw a few, then it certainly makes sense to draw each using random.choice
and remove it.
But... why do you want to select numbers from a range, that corresponds to the count of some items? Are you going to use the number to select one of the items? Don't do that; that's going out of your way to make things too complicated. If you want to select one of the items, then do so directly - again with random.choice
.
I know that the question is too old, anyway:
select a, b from mytable group by a, b
will give your all the combinations.
The CSS Writing Modes module introduces orthogonal flows with vertical text.
Just use the writing-mode
property with the desired value.
span { margin: 20px; }_x000D_
#vertical-lr { writing-mode: vertical-lr; }_x000D_
#vertical-rl { writing-mode: vertical-rl; }_x000D_
#sideways-lr { writing-mode: sideways-lr; }_x000D_
#sideways-rl { writing-mode: sideways-rl; }
_x000D_
<span id="vertical-lr">_x000D_
? (1) vertical-lr ?<br />_x000D_
? (2) vertical-lr ?<br />_x000D_
? (3) vertical-lr ?_x000D_
</span>_x000D_
<span id="vertical-rl">_x000D_
? (1) vertical-rl ?<br />_x000D_
? (2) vertical-rl ?<br />_x000D_
? (3) vertical-rl ?_x000D_
</span>_x000D_
<span id="sideways-lr">_x000D_
? (1) sideways-lr ?<br />_x000D_
? (2) sideways-lr ?<br />_x000D_
? (3) sideways-lr ?_x000D_
</span>_x000D_
<span id="sideways-rl">_x000D_
? (1) sideways-rl ?<br />_x000D_
? (2) sideways-rl ?<br />_x000D_
? (3) sideways-rl ?_x000D_
</span>
_x000D_
Function
Public Function ArrayLen(arr As Variant) As Integer
ArrayLen = UBound(arr) - LBound(arr) + 1
End Function
Usage
Dim arr(1 To 3) As String ' Array starting at 1 instead of 0: nightmare fuel
Debug.Print ArrayLen(arr) ' Prints 3. Everything's going to be ok.
Most developers of text editing programs misuse this name (auto-indent). The correct name is "maintain indentation". Auto-indent is what you actually want, but it is not implemented.
I would also like to see this feature in Notepad++.
i personally would prefer
if(true == foo)
{
}
there is no chance for the ==/= mistype and i find it more expressive in terms of foo's type. But it is a very subjective question.
from cmd run: SVN List URL you will be provided with 3 options (r)eject, (a)ccept, (p)ermanently. enter p. This resolved issue for me
There's no such thing as a "localhost" folder; the word "localhost" is an alias for your local computer. The document root for your apache server, by default, is "Sites" in your home directory.
File pathBinary = new File("Firefox.exe location");
FirefoxBinary ffBinary = new FirefoxBinary(pathBinary);
FirefoxProfile firefoxProfile = new FirefoxProfile();
FirefoxDriver driver = new FirefoxDriver(ffBinary,firefoxProfile);
You need to add binary of the browser
or
Best and forever solution: Just add Firefox.exe location to environmental variables
with open("myfile.txt") as f:
lines = f.readlines()
first_row = lines[0]
print first_row
last_row = lines[-1]
print last_row
You need to set a height on the DIV. Otherwise it will keep expanding indefinitely.
The answer of @jfmercer must be modified slightly to work with current brew, because the output of brew missing
has changed:
brew deps [FORMULA] | xargs brew remove --ignore-dependencies && brew missing | cut -f1 -d: | xargs brew install
The varStatus
references to LoopTagStatus
which has a getIndex()
method.
So:
<c:forEach var="tableEntity" items='${requestScope.tables}' varStatus="outer">
<c:forEach var="rowEntity" items='${tableEntity.rows}' varStatus="inner">
<c:out value="${(outer.index * fn:length(tableEntity.rows)) + inner.index}" />
</c:forEach>
</c:forEach>
if(is_array($arr) && count($arr) > 1)
Just to be sure that $arr is indeed an array.
sizeof
is an alias of count
, I prefer to use count because:
Here is what I have found:
Use RenderAction when you do not have a model to send to the view and have a lot of html to bring back that doesn't need to be stored in a variable.
Use Action when you do not have a model to send to the view and have a little bit of text to bring back that needs to be stored in a variable.
Use RenderPartial when you have a model to send to the view and there will be a lot of html that doesn't need to be stored in a variable.
Use Partial when you have a model to send to the view and there will be a little bit of text that needs to be stored in a variable.
RenderAction and RenderPartial are faster.
I just used getLocaleString() function for my application. It should adapt the timeformat common to the locale, so no +0200 etc. Ofcourse, there will be less possibility for controlling the width of your string then.
var str = (new Date(1400167800)).toLocaleString();
Double.MAX_VALUE is the maximum value a double can represent (somewhere around 1.7*10^308).
This should end in some calculation problems, if you try to subtract the maximum possible value of a data type.
Even though when you are dealing with money you should never use floating point values especially while rounding this can cause problems (you will either have to much or less money in your system then).
Following worked for me and it seems very simple as well:
Let's assume that we want to import a script ./data/get_my_file.py and want to access get_set1() function in it.
import sys
sys.path.insert(0, './data/')
import get_my_file as db
print (db.get_set1())
If you are coming here because you are using Apache commons logging with log4j and log4j isn't working as you expect then check that you actually have a log4j.jar in your run-time classpath. That one had me puzzled for a little while. I have now configured the runner in my dev environment to include -Dlog4j.debug in the Java command line so I can always see that Log4j is being initialized correctly
127.0.0.1,6283
Add a comma between the ip and port
Just so my fellow neuronically impaired comrades might chance upon it here, I had assumed that, for web projects, if the linked file was an external .config file that the "output directory" would be the same directory that web.config lives in, i.e. your web project's root. In retrospect, it is entirely unsurprising that it copies the linked file into the root/bin folder.
So, if it's an appSettings include file, your web.config's open tag would be
<appSettings file=".\bin\includedAppSettingsFile.config">
Duh.
Switch cases should almost always have a default
case.
Reasons to use a default
1.To 'catch' an unexpected value
switch(type)
{
case 1:
//something
case 2:
//something else
default:
// unknown type! based on the language,
// there should probably be some error-handling
// here, maybe an exception
}
2. To handle 'default' actions, where the cases are for special behavior.
You see this a LOT in menu-driven programs and bash shell scripts. You might also see this when a variable is declared outside the switch-case but not initialized, and each case initializes it to something different. Here the default needs to initialize it too so that down the line code that accesses the variable doesn't raise an error.
3. To show someone reading your code that you've covered that case.
variable = (variable == "value") ? 1 : 2;
switch(variable)
{
case 1:
// something
case 2:
// something else
default:
// will NOT execute because of the line preceding the switch.
}
This was an over-simplified example, but the point is that someone reading the code shouldn't wonder why variable
cannot be something other than 1 or 2.
The only case I can think of to NOT use default
is when the switch is checking something where its rather obvious every other alternative can be happily ignored
switch(keystroke)
{
case 'w':
// move up
case 'a':
// move left
case 's':
// move down
case 'd':
// move right
// no default really required here
}
Combine two answers above, I finally make it work. Just be careful that the first single quote for each string is a backtick (`) in file sendmail.mc.
#Change to your mail config directory:
cd /etc/mail
#Make a auth subdirectory
mkdir auth
chmod 700 auth #maybe not, because I cannot apply cmd "cd auth" if I do so.
#Create a file with your auth information to the smtp server
cd auth
touch client-info
#In the file, put the following, matching up to your smtp server:
AuthInfo:your.isp.net "U:root" "I:user" "P:password"
#Generate the Authentication database, make both files readable only by root
makemap hash client-info < client-info
chmod 600 client-info
cd ..
#Add the following lines to sendmail.mc. Make sure you update your smtp server
#The first single quote for each string should be changed to a backtick (`) like this:
define(`SMART_HOST',`your.isp.net')dnl
define(`confAUTH_MECHANISMS', `EXTERNAL GSSAPI DIGEST-MD5 CRAM-MD5 LOGIN PLAIN')dnl
FEATURE(`authinfo',`hash /etc/mail/auth/client-info')dnl
#run
sudo sendmailconfig
You can solve this issue be adding max-width
:
#element {
width: 100vw;
height: 100vw;
max-width: 100%;
}
When you using CSS to make the wrapper full width using the code width: 100vw;
then you will notice a horizontal scroll in the page, and that happened because the padding
and margin
of html
and body
tags added to the wrapper size, so the solution is to add max-width: 100%
If the input value gets populated by a script that has some latency involved (e.g. AJAX call) then you need to wait until the input has been populated. E.g.
var w = new WebDriverWait(WebBrowser, TimeSpan.FromSeconds(10));
w.Until((d) => {
// Wait until the input has a value...
var elements = d.FindElements(By.Name(name));
var ele = elements.SingleOrDefault();
if (ele != null)
{
// Found a single element
if (ele.GetAttribute("value") != "")
{
// We have a value now
return true;
}
}
return false;
});
var e = WebBrowser.Current.FindElement(By.Name(name));
if (e.GetAttribute("value") != value)
{
Assert.Fail("Result contains a field named '{0}', but its value is '{1}', not '{2}' as expected", name, e.GetAttribute("value"), value);
}
Use .NET Reflector to view the FillFromString
method of System.Web.HttpValueCollection
. That gives you the code that ASP.NET is using to fill the Request.QueryString
collection.
Both these will give you the first child node:
console.log(parentElement.firstChild); // or
console.log(parentElement.childNodes[0]);
If you need the first child that is an element node then use:
console.log(parentElement.children[0]);
Edit
Ah, I see your problem now; parentElement
is an array.
If you know that getElementsByClassName will only return one result, which it seems you do, you should use [0]
to dearray (yes, I made that word up) the element:
var parentElement = document.getElementsByClassName("uniqueClassName")[0];
If the above solution didn't work for you, you can use import { withRouter } from 'react-router-dom';
Using this you can export your child class as -
class MyApp extends Component{
// your code
}
export default withRouter(MyApp);
And your class with Router -
// your code
<Router>
...
<Route path="/myapp" component={MyApp} />
// or if you are sending additional fields
<Route path="/myapp" component={() =><MyApp process={...} />} />
<Router>
$(".mytext").mouseover(function() {
var width = 250;
var height = 270;
var posX = $(this).offset().left - $(document).scrollLeft() - width + $(this).outerWidth();
var posY = $(this).offset().top - $(document).scrollTop() + $(this).outerHeight();
$("#dialog").dialog({width:width, height:height ,position:[posX, posY]});
}
Positions a dialog just under an element. I used offset() function just because it calculates the position relative to upper left corner of the browser, but position() function calculates the position relative to parent div or iframe that parent of the element.
After Spending quite a bit of time looking into this, i came up with the solution for this; In this solution i am not using the Basic authentication but instead went with the oAuth authentication protocol. But to use Basic authentication you should be able to specify this in the "setHeaderRequest" with minimal changes to the rest of the code example. I hope this will be able to help someone else in the future:
var token_ // variable will store the token
var userName = "clientID"; // app clientID
var passWord = "secretKey"; // app clientSecret
var caspioTokenUrl = "https://xxx123.caspio.com/oauth/token"; // Your application token endpoint
var request = new XMLHttpRequest();
function getToken(url, clientID, clientSecret) {
var key;
request.open("POST", url, true);
request.setRequestHeader("Content-type", "application/json");
request.send("grant_type=client_credentials&client_id="+clientID+"&"+"client_secret="+clientSecret); // specify the credentials to receive the token on request
request.onreadystatechange = function () {
if (request.readyState == request.DONE) {
var response = request.responseText;
var obj = JSON.parse(response);
key = obj.access_token; //store the value of the accesstoken
token_ = key; // store token in your global variable "token_" or you could simply return the value of the access token from the function
}
}
}
// Get the token
getToken(caspioTokenUrl, userName, passWord);
If you are using the Caspio REST API on some request it may be imperative that you to encode the paramaters for certain request to your endpoint; see the Caspio documentation on this issue;
NOTE: encodedParams is NOT used in this example but was used in my solution.
Now that you have the token stored from the token endpoint you should be able to successfully authenticate for subsequent request from the caspio resource endpoint for your application
function CallWebAPI() {
var request_ = new XMLHttpRequest();
var encodedParams = encodeURIComponent(params);
request_.open("GET", "https://xxx123.caspio.com/rest/v1/tables/", true);
request_.setRequestHeader("Authorization", "Bearer "+ token_);
request_.send();
request_.onreadystatechange = function () {
if (request_.readyState == 4 && request_.status == 200) {
var response = request_.responseText;
var obj = JSON.parse(response);
// handle data as needed...
}
}
}
This solution does only considers how to successfully make the authenticated request using the Caspio API in pure javascript. There are still many flaws i am sure...
Edit > Advanced > View White Space. The keyboard shortcut is CTRL+R, CTRL+W. The command is called Edit.ViewWhiteSpace
.
It works in all Visual Studio versions at least since Visual Studio 2010, the current one being Visual Studio 2019 (at time of writing). In Visual Studio 2013, you can also use CTRL+E, S or CTRL+E, CTRL+S.
By default, end of line markers are not visualized. This functionality is provided by the End of the Line extension.
I would use cron to run a script every minute, and make that script run your script four times with a 15-second sleep between runs.
(That assumes your script is quick to run - you could adjust the sleep times if not.)
That way, you get all the benefits of cron
as well as your 15 second run period.
Edit: See also @bmb's comment below.
No such thing. the input type=date
will pick up whatever your system default is and show that in the GUI but will always store the value in ISO format (yyyy-mm-dd). Beside be aware that not all browsers support this so it's not a good idea to depend on this input type yet.
If this is a corporate issue, force all the computer to use local regional format (dd-mm-yyyy) and your UI will show it in this format (see wufoo link before after changing your regional settings, you need to reopen the browser).
See: http://www.wufoo.com/html5/types/4-date.html for example
See: http://caniuse.com/#feat=input-datetime for browser supports
See: https://www.w3.org/TR/2011/WD-html-markup-20110525/input.date.html for spec. <- no format attr.
Your best bet is still to use JavaScript based component that will allow you to customize this to whatever you wish.
git config user.name only changes the name I commit. I still cannot push. This is how I solved it, and I think is an easy way to me.
Generate a SSH key under the user name you want to push on the computer you will use https://help.github.com/articles/connecting-to-github-with-ssh/
Add this key to the github user account that you want to push to https://help.github.com/articles/adding-a-new-ssh-key-to-your-github-account/
Choose to Clone with SSH
You can push in as this user to that repo now.
You can bulk import all aliases from one keystore to another:
keytool -importkeystore -srckeystore source.jks -destkeystore dest.jks
import java.util.ArrayList;
import java.util.Iterator;
public class javaClass {
public static void main(String args[]) {
ArrayList<String> alstr = new ArrayList<>();
alstr.add("irfan");
alstr.add("yogesh");
alstr.add("kapil");
alstr.add("rajoria");
for(String str : alstr) {
System.out.println(str);
}
// update value here
alstr.set(3, "Ramveer");
System.out.println("with Iterator");
Iterator<String> itr = alstr.iterator();
while (itr.hasNext()) {
Object obj = itr.next();
System.out.println(obj);
}
}}
On windows in a corporate environment where certificates are distributed from a single source, I found this answer solved the issue: https://stackoverflow.com/a/48212753/761755
There are some good answers for it. I want to explain it through demo per Doc
CMD
defines default commands and/or parameters for a container. CMD is an instruction that is best to use if you need a default command which users can easily override. If a Dockerfile has multiple CMDs, it only applies the instructions from the last one.ENTRYPOINT
is preferred when you want to define a container with a specific executable.You cannot override an ENTRYPOINT
when starting a container unless you add the --entrypoint
flag.
Docker file
FROM centos:8.1.1911
CMD ["echo", "Hello Docker"]
Run result
$ sudo docker run <image-id>
Hello Docker
$ sudo docker run <image-id> hostname # hostname is exec to override CMD
244be5006f32
Docker file
FROM centos:8.1.1911
ENTRYPOINT ["echo", "Hello Docker"]
Run result
$ sudo docker run <image-id>
Hello Docker
$ sudo docker run <image-id> hostname # hostname as parameter to exec
Hello Docker hostname
Docker file
FROM centos:8.1.1911
ENTRYPOINT ["echo", "Hello"]
CMD ["Docker"]
Run result
$ sudo docker run <image-id>
Hello Docker
$ sudo docker run <image-id> Ben
Hello Ben
Simply request (HTTP GET):
https://graph.facebook.com/USER_ID/access_token=xxxxxxxxxxxxxxxxx
That's it.
Few lines solution without redundant pairs of variables:
corr_matrix = df.corr().abs()
#the matrix is symmetric so we need to extract upper triangle matrix without diagonal (k = 1)
sol = (corr_matrix.where(np.triu(np.ones(corr_matrix.shape), k=1).astype(np.bool))
.stack()
.sort_values(ascending=False))
#first element of sol series is the pair with the biggest correlation
Then you can iterate through names of variables pairs (which are pandas.Series multi-indexes) and theirs values like this:
for index, value in sol.items():
# do some staff
srand()
seeds the random number generator. Without a seed, the generator is unable to generate the numbers you are looking for. As long as one's need for random numbers is not security-critical (e.g. any sort of cryptography), common practice is to use the system time as a seed by using the time()
function from the <ctime>
library as such: srand(time(0))
. This will seed the random number generator with the system time expressed as a Unix timestamp (i.e. the number of seconds since the date 1/1/1970). You can then use rand()
to generate a pseudo-random number.
Here is a quote from a duplicate question:
The reason is that a random number generated from the rand() function isn't actually random. It simply is a transformation. Wikipedia gives a better explanation of the meaning of pseudorandom number generator: deterministic random bit generator. Every time you call rand() it takes the seed and/or the last random number(s) generated (the C standard doesn't specify the algorithm used, though C++11 has facilities for specifying some popular algorithms), runs a mathematical operation on those numbers, and returns the result. So if the seed state is the same each time (as it is if you don't call srand with a truly random number), then you will always get the same 'random' numbers out.
If you want to know more, you can read the following:
http://www.dreamincode.net/forums/topic/24225-random-number-generation-102/
http://www.dreamincode.net/forums/topic/29294-making-pseudo-random-number-generators-more-random/
Try This :
<input min="0" max="100" id="when_change_range" type="range">
<input type="text" id="text_for_show_range">
and in jQuery section :
$('#when_change_range').change(function(){
document.getElementById('text_for_show_range').value=$(this).val();
});
window.onbeforeunload = function ()
{
if (isProcess > 0)
{
return true;
}
else
{
//do something
}
};
This function show a confirmation dialog box if you close window or refresh page during any process in browser.This function work in all browsers.You have to set isProcess var in your ajax process.
I created a WSGI middleware that stores the raw body from the environ['wsgi.input']
stream. I saved the value in the WSGI environ so I could access it from request.environ['body_copy']
within my app.
This isn't necessary in Werkzeug or Flask, as request.get_data()
will get the raw data regardless of content type, but with better handling of HTTP and WSGI behavior.
This reads the entire body into memory, which will be an issue if for example a large file is posted. This won't read anything if the Content-Length
header is missing, so it won't handle streaming requests.
from io import BytesIO
class WSGICopyBody(object):
def __init__(self, application):
self.application = application
def __call__(self, environ, start_response):
length = int(environ.get('CONTENT_LENGTH') or 0)
body = environ['wsgi.input'].read(length)
environ['body_copy'] = body
# replace the stream since it was exhausted by read()
environ['wsgi.input'] = BytesIO(body)
return self.application(environ, start_response)
app.wsgi_app = WSGICopyBody(app.wsgi_app)
request.environ['body_copy']
I juste wrote a proxy in nodejs that take care of HTTPS with optional decoding of the message. This proxy also can add proxy-authentification header in order to go through a corporate proxy. You need to give as argument the url to find the proxy.pac file in order to configurate the usage of corporate proxy.
The part you should be interested in is the /?
part, which should solve most other questions you have with the tool.
Microsoft Windows XP [Version 5.1.2600] (C) Copyright 1985-2001 Microsoft Corp. C:\>cmd /? Starts a new instance of the Windows XP command interpreter CMD [/A | /U] [/Q] [/D] [/E:ON | /E:OFF] [/F:ON | /F:OFF] [/V:ON | /V:OFF] [[/S] [/C | /K] string] /C Carries out the command specified by string and then terminates /K Carries out the command specified by string but remains /S Modifies the treatment of string after /C or /K (see below) /Q Turns echo off /D Disable execution of AutoRun commands from registry (see below) /A Causes the output of internal commands to a pipe or file to be ANSI /U Causes the output of internal commands to a pipe or file to be Unicode /T:fg Sets the foreground/background colors (see COLOR /? for more info) /E:ON Enable command extensions (see below) /E:OFF Disable command extensions (see below) /F:ON Enable file and directory name completion characters (see below) /F:OFF Disable file and directory name completion characters (see below) /V:ON Enable delayed environment variable expansion using ! as the delimiter. For example, /V:ON would allow !var! to expand the variable var at execution time. The var syntax expands variables at input time, which is quite a different thing when inside of a FOR loop. /V:OFF Disable delayed environment expansion.
The question is formally answered greatly, so I will not try to add more on this.
In very simple, informal words to someone that knows very little or nothing on math or programming, I would explain it as a small "machine" or "box" that takes some input, makes some work and produces some output, has no particular name, but we know where it is and by just this knowledge, we use it.
Practically speaking, for a person that knows what a function is, I would tell them that it is a function that has no name, usually put to a point in memory that can be used just by referencing to that memory (usually via the usage of a variable - if they have heard about the concept of the function pointers, I would use them as a similar concept) - this answer covers the pretty basics (no mention of closures etc) but one can get the point easily.
Apache HttpComponents. The examples for the two modules - HttpCore and HttpClient will get you started right away.
Not that HttpUrlConnection is a bad choice, HttpComponents will abstract a lot of the tedious coding away. I would recommend this, if you really want to support a lot of HTTP servers/clients with minimum code. By the way, HttpCore could be used for applications (clients or servers) with minimum functionality, whereas HttpClient is to be used for clients that require support for multiple authentication schemes, cookie support etc.
My laptop runs on AMD Ryzen 5 and I was facing a similar issue. I tried some of the fixes here but didn't work but eventually, I read hundreds of blogs and came up with a solution. You need the following setup requirements to be in place:
AMD Processor - Recommended: AMD® Ryzen™ processors Android Studio 3.2 Beta or higher(I run on BETA, However the latest version of Android Studio doesn't need you to install ARM images anymore) Android Emulator v27.3.8+ x86 Android Virtual Device (AVD) Windows 10 with April 2018 Update Enable via Windows Features: "Windows Hypervisor Platform"
With all these features in place, I was running Android studio again. Hope it helped!
A different variant of the cause/solution:
My issue was that I was not getting an output because I was writing the result set from an asynchronous LINQ call to the console in a loop in an asynchronous context:
var p = _context.Payment.Where(pp => pp.applicationNumber.Trim() == "12345");
p.ForEachAsync(payment => Console.WriteLine(payment.Amount));
And so the test was not writing to the console before the console object was cleaned up by the runtime (when running only one test).
The solution was to convert the result set to a list first, so I could use the non-asynchronous version of forEach():
var p = _context.Payment.Where(pp => pp.applicationNumber.Trim() == "12345").ToList();
p.ForEachAsync(payment =>Console.WriteLine(payment.Amount));
If you are using a reverse proxy such as nginx in between, you could define a custom token, such as X-API-Token
.
In nginx you would rewrite it for the upstream proxy (your rest api) to be just auth:
proxy_set_header Authorization $http_x_api_token;
... while nginx can use the original Authorization header to check HTTP AUth.
Try this explanation on...
TypeSafe means that variables are statically checked for appropriate assignment at compile time. For example, consder a string or an integer. These two different data types cannot be cross-assigned (ie, you can't assign an integer to a string nor can you assign a string to an integer).
For non-typesafe behavior, consider this:
object x = 89;
int y;
if you attempt to do this:
y = x;
the compiler throws an error that says it can't convert a System.Object to an Integer. You need to do that explicitly. One way would be:
y = Convert.ToInt32( x );
The assignment above is not typesafe. A typesafe assignement is where the types can directly be assigned to each other.
Non typesafe collections abound in ASP.NET (eg, the application, session, and viewstate collections). The good news about these collections is that (minimizing multiple server state management considerations) you can put pretty much any data type in any of the three collections. The bad news: because these collections aren't typesafe, you'll need to cast the values appropriately when you fetch them back out.
For example:
Session[ "x" ] = 34;
works fine. But to assign the integer value back, you'll need to:
int i = Convert.ToInt32( Session[ "x" ] );
Read about generics for ways that facility helps you easily implement typesafe collections.
C# is a typesafe language but watch for articles about C# 4.0; interesting dynamic possibilities loom (is it a good thing that C# is essentially getting Option Strict: Off... we'll see).
One case when reinterpret_cast
is necessary is when interfacing with opaque data types. This occurs frequently in vendor APIs over which the programmer has no control. Here's a contrived example where a vendor provides an API for storing and retrieving arbitrary global data:
// vendor.hpp
typedef struct _Opaque * VendorGlobalUserData;
void VendorSetUserData(VendorGlobalUserData p);
VendorGlobalUserData VendorGetUserData();
To use this API, the programmer must cast their data to VendorGlobalUserData
and back again. static_cast
won't work, one must use reinterpret_cast
:
// main.cpp
#include "vendor.hpp"
#include <iostream>
using namespace std;
struct MyUserData {
MyUserData() : m(42) {}
int m;
};
int main() {
MyUserData u;
// store global data
VendorGlobalUserData d1;
// d1 = &u; // compile error
// d1 = static_cast<VendorGlobalUserData>(&u); // compile error
d1 = reinterpret_cast<VendorGlobalUserData>(&u); // ok
VendorSetUserData(d1);
// do other stuff...
// retrieve global data
VendorGlobalUserData d2 = VendorGetUserData();
MyUserData * p = 0;
// p = d2; // compile error
// p = static_cast<MyUserData *>(d2); // compile error
p = reinterpret_cast<MyUserData *>(d2); // ok
if (p) { cout << p->m << endl; }
return 0;
}
Below is a contrived implementation of the sample API:
// vendor.cpp
static VendorGlobalUserData g = 0;
void VendorSetUserData(VendorGlobalUserData p) { g = p; }
VendorGlobalUserData VendorGetUserData() { return g; }
$.get("/folder_name/filename.xml", function (xml) {_x000D_
var xmlInnerhtml = xml.documentElement.innerHTML;_x000D_
});
_x000D_
You can use following formulas.
For Excel 2007 or later:
=IFERROR(VLOOKUP(D3,List!A:C,3,FALSE),"No Match")
For Excel 2003:
=IF(ISERROR(MATCH(D3,List!A:A, 0)), "No Match", VLOOKUP(D3,List!A:C,3,FALSE))
Note, that
List!A:C
in VLOOKUP
and returns value from column ? 3
VLOOKUP
equals to FALSE
, in that case VLOOKUP
will only find an exact match, and the values in the first column of List!A:C
do not need to be sorted (opposite to case when you're using TRUE
).Try instead of GROUP="plugdev"
use the main group of your user.
There are also these 'ways':
>>> dict.fromkeys(range(1, 4))
{1: None, 2: None, 3: None}
>>> dict(zip(range(1, 4), range(1, 4)))
{1: 1, 2: 2, 3: 3}
This works:
insert into TABLE_NAME (COL1,COL2)
select my_seq.nextval, a
from
(SELECT 'SOME VALUE' as a FROM DUAL
UNION ALL
SELECT 'ANOTHER VALUE' FROM DUAL)
Very small code to get Age:
<?php
$dob='1981-10-07';
$diff = (date('Y') - date('Y',strtotime($dob)));
echo $diff;
?>
//output 35