Basically, you have two major choices:
@GeneratedValue
annotation and Hibernate will assign the identifier for you.For the generated identifiers you have two options:
For numerical identifiers you have three options:
IDENTITY
SEQUENCE
TABLE
IDENTITY
is only a good choice when you cannot use SEQUENCE (e.g. MySQL) because it disables JDBC batch updates.
SEQUENCE
is the preferred option, especially when used with an identifier optimizer like pooled
or pooled-lo
.
TABLE
is to be avoided since it uses a separate transaction to fetch the identifier and row-level locks which scales poorly.
Turning off optimization fixes the problem, but it is unnecessary. A safer alternative is to make it illegal for the compiler to optimize out the store by using the volatile
type qualifier.
// Assuming pageptr is unsigned char * already...
unsigned char *pageptr = ...;
((unsigned char volatile *)pageptr)[0] = pageptr[0];
The volatile
type qualifier instructs the compiler to be strict about memory stores and loads. One purpose of volatile
is to let the compiler know that the memory access has side effects, and therefore must be preserved. In this case, the store has the side effect of causing a page fault, and you want the compiler to preserve the page fault.
This way, the surrounding code can still be optimized, and your code is portable to other compilers which don't understand GCC's #pragma
or __attribute__
syntax.
I'm not a java expert but I solve your problem like this:
@FunctionalInterface
public interface AutoCompleteCallable<T> {
String call(T model) throws Exception;
}
I define the parameter in my special Interface
public <T> void initialize(List<T> entries, AutoCompleteCallable getSearchText) {.......
//call here
String value = getSearchText.call(item);
...
}
Finally, I implement getSearchText method while calling initialize method.
initialize(getMessageContactModelList(), new AutoCompleteCallable() {
@Override
public String call(Object model) throws Exception {
return "custom string" + ((xxxModel)model.getTitle());
}
})
As the official specification says, "one or more different sets of data are combined in a single body". So when photos and music are handled as multipart messages as mentioned in the question, probably there is some plain text metadata associated as well, thus making the request containing different types of data (binary, text), which implies the usage of multipart.
1) You cannot overload the method (Why doesn't ruby support method overloading?) so why not write a new method altogether?
2) I solved a similar problem using the splat operator * for an array of zero or more length. Then, if I want to pass a parameter(s) I can, it is interpreted as an array, but if I want to call the method without any parameter then I don't have to pass anything. See Ruby Programming Language pages 186/187
Set the PATH variable, like you're doing. If you're running the program from the IDE, you can modify environment variables by adjusting the Debugging options in the project properties.
If the DLLs are named such that you don't need different paths for the different configuration types, you can add the path to the system PATH variable or to Visual Studio's global one in Tools | Options.
The solution discussed here worked well for me. This solution uses built-in cuda functions and is very simple to implement.
The relevant code is copied below:
#include <stdio.h>
#include <stdlib.h>
__global__ void foo(int *ptr)
{
*ptr = 7;
}
int main(void)
{
foo<<<1,1>>>(0);
// make the host block until the device is finished with foo
cudaDeviceSynchronize();
// check for error
cudaError_t error = cudaGetLastError();
if(error != cudaSuccess)
{
// print the CUDA error message and exit
printf("CUDA error: %s\n", cudaGetErrorString(error));
exit(-1);
}
return 0;
}
Click on Tools menu > Import and Export Settings > Reset all settings > Next > "No, just reset settings, overwriting all current settings" > Next > Finish.
I know exactly what you mean. The same thing in Swift will be no problem. The bottom line is use let
, not var
.
The fact that primitives are passed by value, but the fact that the value of var i
at the point of iteration is not copied into the anonymous function is quite surprising to say the least.
for (let i = 0; i < boxArray.length; i++) {
boxArray[i].onclick = function() { console.log(i) }; // Correctly prints the index
}
Your piece of script works just great. Are you sure you are not assigning anything else before the if to "i"?
A common mistake is also not to leave a space after and before the square brackets.
For linux machines (not OS X) :
hostname --ip-address
Try:
ArrayListname.get(index);
Where index
is the position in the index and ArrayListname
is the name of the Arraylist as in your case is mainList.
Here is the LIGHT WEIGHTED solution which worked for me with no external HTTPCore and such libs. I was facing issue of 64K methods so have no option left to avoid HTTPCore libraries
import java.util.List;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.List;
/**
* This utility class provides an abstraction layer for sending multipart HTTP
* POST requests to a web server.
*
* @author www.codejava.net
*/
public class MultipartUtility {
private final String boundary;
private static final String LINE_FEED = "\r\n";
private HttpURLConnection httpConn;
private String charset;
private OutputStream outputStream;
private PrintWriter writer;
/**
* This constructor initializes a new HTTP POST request with content type
* is set to multipart/form-data
*
* @param requestURL
* @param charset
* @throws IOException
*/
public MultipartUtility(String requestURL, String charset)
throws IOException {
this.charset = charset;
// creates a unique boundary based on time stamp
boundary = "===" + System.currentTimeMillis() + "===";
URL url = new URL(requestURL);
httpConn = (HttpURLConnection) url.openConnection();
httpConn.setUseCaches(false);
httpConn.setDoOutput(true); // indicates POST method
httpConn.setDoInput(true);
httpConn.setRequestProperty("Content-Type",
"multipart/form-data; boundary=" + boundary);
httpConn.setRequestProperty("User-Agent", "CodeJava Agent");
httpConn.setRequestProperty("Test", "Bonjour");
outputStream = httpConn.getOutputStream();
writer = new PrintWriter(new OutputStreamWriter(outputStream, charset),
true);
}
/**
* Adds a form field to the request
*
* @param name field name
* @param value field value
*/
public void addFormField(String name, String value) {
writer.append("--" + boundary).append(LINE_FEED);
writer.append("Content-Disposition: form-data; name=\"" + name + "\"")
.append(LINE_FEED);
writer.append("Content-Type: text/plain; charset=" + charset).append(
LINE_FEED);
writer.append(LINE_FEED);
writer.append(value).append(LINE_FEED);
writer.flush();
}
/**
* Adds a upload file section to the request
*
* @param fieldName name attribute in <input type="file" name="..." />
* @param uploadFile a File to be uploaded
* @throws IOException
*/
public void addFilePart(String fieldName, File uploadFile)
throws IOException {
String fileName = uploadFile.getName();
writer.append("--" + boundary).append(LINE_FEED);
writer.append(
"Content-Disposition: form-data; name=\"" + fieldName
+ "\"; filename=\"" + fileName + "\"")
.append(LINE_FEED);
writer.append(
"Content-Type: "
+ URLConnection.guessContentTypeFromName(fileName))
.append(LINE_FEED);
writer.append("Content-Transfer-Encoding: binary").append(LINE_FEED);
writer.append(LINE_FEED);
writer.flush();
FileInputStream inputStream = new FileInputStream(uploadFile);
byte[] buffer = new byte[4096];
int bytesRead = -1;
while ((bytesRead = inputStream.read(buffer)) != -1) {
outputStream.write(buffer, 0, bytesRead);
}
outputStream.flush();
inputStream.close();
writer.append(LINE_FEED);
writer.flush();
}
/**
* Adds a header field to the request.
*
* @param name - name of the header field
* @param value - value of the header field
*/
public void addHeaderField(String name, String value) {
writer.append(name + ": " + value).append(LINE_FEED);
writer.flush();
}
/**
* Completes the request and receives response from the server.
*
* @return a list of Strings as response in case the server returned
* status OK, otherwise an exception is thrown.
* @throws IOException
*/
public List<String> finish() throws IOException {
List<String> response = new ArrayList<String>();
writer.append(LINE_FEED).flush();
writer.append("--" + boundary + "--").append(LINE_FEED);
writer.close();
// checks server's status code first
int status = httpConn.getResponseCode();
if (status == HttpURLConnection.HTTP_OK) {
BufferedReader reader = new BufferedReader(new InputStreamReader(
httpConn.getInputStream()));
String line = null;
while ((line = reader.readLine()) != null) {
response.add(line);
}
reader.close();
httpConn.disconnect();
} else {
throw new IOException("Server returned non-OK status: " + status);
}
return response;
}
}
USAGE
private void uploadMedia() {
try {
String charset = "UTF-8";
File uploadFile1 = new File("/sdcard/myvideo.mp4");
String requestURL = Data.BASE_URL+Data.URL_UPLOAD_REACTION_TEST;
MultipartUtility multipart = new MultipartUtility(requestURL, charset);
// multipart.addHeaderField("User-Agent", "CodeJava");
// multipart.addHeaderField("Test-Header", "Header-Value");
multipart.addFormField("friend_id", "Cool Pictures");
multipart.addFormField("userid", "Java,upload,Spring");
multipart.addFilePart("uploadedfile", uploadFile1);
List<String> response = multipart.finish();
Log.v("rht", "SERVER REPLIED:");
for (String line : response) {
Log.v("rht", "Line : "+line);
}
} catch (Exception e) {
e.printStackTrace();
}
}
PHP Code to accept upload
<?php
$friend_id = $_REQUEST['friend_id'];
$userid = $_REQUEST['userid'];
echo 'friend_id : '.$friend_id. ' userid '.$userid;
move_uploaded_file($_FILES['uploadedfile']['tmp_name'], "./uploads/".$_FILES["uploadedfile"]["name"]);
?>
For me the trigger approach has worked the best, but I found a snag with the approach. Consider the basic trigger to set a date field to the current time on insert:
CREATE TRIGGER myTable_OnInsert BEFORE INSERT ON `tblMyTable`
FOR EACH ROW SET NEW.dateAdded = NOW();
This is usually great, but say you want to set the field manually via INSERT statement, like so:
INSERT INTO tblMyTable(name, dateAdded) VALUES('Alice', '2010-01-03 04:30:43');
What happens is that the trigger immediately overwrites your provided value for the field, and so the only way to set a non-current time is a follow up UPDATE statement--yuck! To override this behavior when a value is provided, try this slightly modified trigger with the IFNULL operator:
CREATE TRIGGER myTable_OnInsert BEFORE INSERT ON `tblMyTable`
FOR EACH ROW SET NEW.dateAdded = IFNULL(NEW.dateAdded, NOW());
This gives the best of both worlds: you can provide a value for your date column and it will take, and otherwise it'll default to the current time. It's still ghetto relative to something clean like DEFAULT GETDATE() in the table definition, but we're getting closer!
Adding one more scalable solution.
lists = [lst1, lst2, lst3, lst4]
df = pd.concat([pd.Series(x) for x in lists], axis=1)
std::stringstream::str()
is the method you are looking for.
With std::stringstream
:
template <class T>
std::string YourClass::NumericToString(const T & NumericValue)
{
std::stringstream ss;
ss << NumericValue;
return ss.str();
}
std::stringstream
is a more generic tool. You can use the more specialized class std::ostringstream
for this specific job.
template <class T>
std::string YourClass::NumericToString(const T & NumericValue)
{
std::ostringstream oss;
oss << NumericValue;
return oss.str();
}
If you are working with std::wstring
type of strings, you must prefer std::wstringstream
or std::wostringstream
instead.
template <class T>
std::wstring YourClass::NumericToString(const T & NumericValue)
{
std::wostringstream woss;
woss << NumericValue;
return woss.str();
}
if you want the character type of your string could be run-time selectable, you should also make it a template variable.
template <class CharType, class NumType>
std::basic_string<CharType> YourClass::NumericToString(const NumType & NumericValue)
{
std::basic_ostringstream<CharType> oss;
oss << NumericValue;
return oss.str();
}
For all the methods above, you must include the following two header files.
#include <string>
#include <sstream>
Note that, the argument NumericValue
in the examples above can also be passed as std::string
or std::wstring
to be used with the std::ostringstream
and std::wostringstream
instances respectively. It is not necessary for the NumericValue
to be a numeric value.
Go to view and press "Switch to scale mode" which will adjust the virtual screen when you adjust the application.
I would create an object like this:
var options = {
size: ["S", "M", "L", "XL", "XXL"],
color: ["Red", "Blue", "Green", "White", "Black"]
};
alert(Object.keys(options));
To access the keys individualy:
for (var key in options) {
alert(key);
}
P.S.: when you create a new array object do not use new Array
use []
instead.
I think you were almost there. Have you tried:
window.parent.onbeforeunload = null;
window.parent.location.replace(self.location.href);
or, alternatively:
window.parent.prevent_bust = 0;
Note: I didn't actually test this.
I solved it by putting this:
@Override
protected void onDestroy() {
accessTokenTracker.stopTracking();
super.onDestroy();
}
In here:
if (ValidationUtils.isNullOrEmpty(lastName)) {
registrationErrors.add(ValidationErrors.LAST_NAME);
}
if (!ValidationUtils.isEmailValid(email)) {
registrationErrors.add(ValidationErrors.EMAIL);
}
you check for null or empty value on lastname, but in isEmailValid you don't check for empty value. Something like this should do
if (ValidationUtils.isNullOrEmpty(email) || !ValidationUtils.isEmailValid(email)) {
registrationErrors.add(ValidationErrors.EMAIL);
}
or better yet, fix your ValidationUtils.isEmailValid() to cope with null email values. It shouldn't crash, it should just return false.
I think If you are going to store large amount of data in local storage you can use sqflite library. It is very easy to setup and I have personally used for some test project and it works fine.
https://github.com/tekartik/sqflite This a tutorial - https://proandroiddev.com/flutter-bookshelf-app-part-2-personal-notes-and-database-integration-a3b47a84c57
If you want to store data in cloud you can use firebase. It is solid service provide by google.
Since I stumbled on this answer, and it greatly helped me, but I found a minor syntactic issue, I felt I should save others possible frustration. The triple quoted string works for this scenario as described, but note that if the " you want in the string occurs at the end of the string itself:
somestr = """This is a string with a special need to have a " in it at the end""""
You will hit an error at execution because the """" (4) quotes in a row confuses the string reader, as it thinks it has hit the end of the string already and then finds a random " out there. You can validate this by inserting a space into the 4 quotes like so: " """ and it will not have the error.
In this special case you will need to either use:
somestr = 'This.....at the end"'
or use the method described above of building multiple strings with mixed " and ' and then concatenating them after the fact.
To open IIS Manager, click Start, type inetmgr in the Search Programs and Files box, and then press ENTER.
if the IIS Manager doesn't open that means you need to install it.
So, Follow the instruction at this link: https://docs.microsoft.com/en-us/iis/install/installing-iis-7/installing-iis-on-windows-vista-and-windows-7
This issue occurs whenever you call a context which is unavailable or null when you call it. This can be a situation when you are calling main activity thread's context on a background thread or background thread's context on main activity thread.
For instance , I updated my shared preference string like following.
editor.putString("penname",penNameEditeText.getText().toString());
editor.commit();
finish();
And called finish() right after it. Now what it does is that as commit runs on main thread and stops any other Async commits if coming until it finishes. So its context is alive until the write is completed. Hence previous context is live , causing the error to occur.
So make sure to have your code rechecked if there is some code having this context issue.
Good question.
I don't think there is. I believe it would have been quite well known if there was an easy way, and I see that Microsoft is creating a mechanism in Visual Studio 2010 for deploying different configuration files for deployment and test.
With that said, however; I have found that you in the ConnectionStrings
section have a kind of placeholder called "|DataDirectory|". Maybe you could have a look at what's at work there...
Here's a piece from machine.config
showing it:
<connectionStrings>
<add
name="LocalSqlServer"
connectionString="data source=.\SQLEXPRESS;Integrated Security=SSPI;AttachDBFilename=|DataDirectory|aspnetdb.mdf;User Instance=true"
providerName="System.Data.SqlClient"
/>
</connectionStrings>
Include
is a part of fluent interface, so you can write multiple Include
statements each following other
db.Courses.Include(i => i.Modules.Select(s => s.Chapters))
.Include(i => i.Lab)
.Single(x => x.Id == id);
I did it this way and it worked for me like a charm.
var data = [{ id: 0, text: 'enhancement' }, { id: 1, text: 'bug' }, { id: 2,
text: 'duplicate' }, { id: 3, text: 'invalid' }, { id: 4, text: 'wontfix' }];
$(".js-example-data-array").select2({
data: data
})
According to documentation:
random.sample(population, k)
Return a k length list of unique elements chosen from the population sequence. Used for random sampling without replacement.
Basically, it picks k unique random elements, a sample, from a sequence:
>>> import random
>>> c = list(range(0, 15))
>>> c
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14]
>>> random.sample(c, 5)
[9, 2, 3, 14, 11]
random.sample
works also directly from a range:
>>> c = range(0, 15)
>>> c
range(0, 15)
>>> random.sample(c, 5)
[12, 3, 6, 14, 10]
In addition to sequences, random.sample
works with sets too:
>>> c = {1, 2, 4}
>>> random.sample(c, 2)
[4, 1]
However, random.sample
doesn't work with arbitrary iterators:
>>> c = [1, 3]
>>> random.sample(iter(c), 5)
TypeError: Population must be a sequence or set. For dicts, use list(d).
If you got here because a search engine told you this is how to get the Unix timestamp, stop reading this answer. Scroll down one.
If you want to reverse time.gmtime()
, you want calendar.timegm()
.
>>> calendar.timegm(time.gmtime())
1293581619.0
You can turn your string into a time tuple with time.strptime()
, which returns a time tuple that you can pass to calendar.timegm()
:
>>> import calendar
>>> import time
>>> calendar.timegm(time.strptime('Jul 9, 2009 @ 20:02:58 UTC', '%b %d, %Y @ %H:%M:%S UTC'))
1247169778
More information about calendar module here
The easiest way to do this is to format a cell the way you want it, then use the "cell format ..." contextual menu to get to the fill and format colours, use the "more colors ..." button to get to the hexagon colour selector, select the custom tab.
The RGB colours are as in the table at the bottom of the pane. If you prefer HSL values change the color model from RGB to HSL. I have used this to change the saturation on my bad cells. A higher luminosity gives a worse results and the shade of all the cells is the same just the deepness of the colour is modified.
Below code works with Spring boot(kotlin):
val authReader = InputStreamReader(javaClass.getResourceAsStream("/file1.json"))
The solution is to add height:100%;
to all the parent elements of your .wrapper-div
as well. So:
html{
height: 100%;
}
body{
margin:0;
padding:0;
overflow:hidden;
height:100%;
}
#container{
width:1000px;
margin:0 auto;
height:100%;
}
Check JavaScript Cookies on W3Schools.com for setting and getting cookie values via JS.
Just use the setCookie and getCookie methods mentioned there.
So, the code will look something like:
<script>
function setCookie(c_name, value, exdays) {
var exdate = new Date();
exdate.setDate(exdate.getDate() + exdays);
var c_value = escape(value) + ((exdays == null) ? "" : "; expires=" + exdate.toUTCString());
document.cookie = c_name + "=" + c_value;
}
function getCookie(c_name) {
var i, x, y, ARRcookies = document.cookie.split(";");
for (i = 0; i < ARRcookies.length; i++) {
x = ARRcookies[i].substr(0, ARRcookies[i].indexOf("="));
y = ARRcookies[i].substr(ARRcookies[i].indexOf("=") + 1);
x = x.replace(/^\s+|\s+$/g, "");
if (x == c_name) {
return unescape(y);
}
}
}
function cssSelected() {
var cssSelected = $('#myList')[0].value;
if (cssSelected !== "select") {
setCookie("selectedCSS", cssSelected, 3);
}
}
$(document).ready(function() {
$('#myList')[0].value = getCookie("selectedCSS");
})
</script>
<select id="myList" onchange="cssSelected();">
<option value="select">--Select--</option>
<option value="style-1.css">CSS1</option>
<option value="style-2.css">CSS2</option>
<option value="style-3.css">CSS3</option>
<option value="style-4.css">CSS4</option>
</select>
Consider using a package to automatically generate inline styles from your css files. A good one is Grunt Critical or Critical css for Laravel.
This will list all certificates:
keytool -list -keystore "$JAVA_HOME/jre/lib/security/cacerts"
This will make the scroll bars always display when there is content within windows that must be scrolled to access, it applies to all windows and all apps on the Mac:
Launch System Preferences from the ? Apple menu Click on the “General” settings panel Look for ‘Show scroll bars’ and select the radiobox next to “Always” Close out of System Preferences when finished
an example of a language feature that isn't just removing line breaks, although still not convinced this is clearer than the more verbose version
a = 1 if x > 15 else 2
jQuery 1.8.1 has an example of this under autocomplete. It's very easy to implement.
If you have access to netstat
, that can do precisely that.
$.ajax({
dataType: "json",
type: "POST",
url: "/Home/AutocompleteID",
data: data,
success: function (data) {
$('#search').html('');
$('#search').append(data[0].Scheme_Code);
$('#search').append(data[0].Scheme_Name);
}
});
You could also use it clean and simple (but wrong! because you should use format
like Mark Byers said) by doing:
print 'This is my %s formatted with %d arguments' % ('string', 2)
Add this to the stylesheet:
table {
border-collapse: collapse;
}
The reason why it behaves this way is actually described pretty well in the specification:
There are two distinct models for setting borders on table cells in CSS. One is most suitable for so-called separated borders around individual cells, the other is suitable for borders that are continuous from one end of the table to the other.
... and later, for collapse
setting:
In the collapsing border model, it is possible to specify borders that surround all or part of a cell, row, row group, column, and column group.
The list.append
function does not return any value(but None
), it just adds the value to the list you are using to call that method.
In the first loop round you will assign None
(because the no-return of append
) to a
, then in the second round it will try to call a.append
, as a is None
it will raise the Exception you are seeing
You just need to change it to:
a=[]
for i in range(5):
a.append(i)
print(a)
# [0, 1, 2, 3, 4]
list.append
is what is called a mutating or destructive method, i.e. it will destroy or mutate the previous object into a new one(or a new state).
If you would like to create a new list based in one list without destroying or mutating it you can do something like this:
a=['a', 'b', 'c']
result = a + ['d']
print result
# ['a', 'b', 'c', 'd']
print a
# ['a', 'b', 'c']
As a corollary only, you can mimic the append
method by doing the following:
a=['a', 'b', 'c']
a = a + ['d']
print a
# ['a', 'b', 'c', 'd']
You can also use:
{{ word|striptags('<b>')|raw }}
so that only <b>
tag will be allowed.
Unfortunately, no. This feature is not available for facebook albums.
max([(value,index) for index,value in enumerate(your_list)]) #if maximum value is present more than once in your list then this will return index of the last occurrence
If maximum value in present more than once and you want to get all indices,
max_value = max(your_list)
maxIndexList = [index for index,value in enumerate(your_list) if value==max(your_list)]
def imshow(img):
img = img / 2 + 0.5 # unnormalize
npimg = img.numpy()
plt.imshow(np.transpose(npimg, (1, 2, 0)))
plt.show()
You can transform the image into numpy by parsing the image into numpy() function after squishing out the features( unnormalization)
You gotta feel proud when you use something so beautiful as boost::spirit
Here my attempt of a parser (almost) complying with the CSV specifications on this link CSV specs (I didn't need line breaks within fields. Also the spaces around the commas are dismissed).
After you overcome the shocking experience of waiting 10 seconds for compiling this code :), you can sit back and enjoy.
// csvparser.cpp
#include <boost/spirit/include/qi.hpp>
#include <boost/spirit/include/phoenix_operator.hpp>
#include <iostream>
#include <string>
namespace qi = boost::spirit::qi;
namespace bascii = boost::spirit::ascii;
template <typename Iterator>
struct csv_parser : qi::grammar<Iterator, std::vector<std::string>(),
bascii::space_type>
{
qi::rule<Iterator, char() > COMMA;
qi::rule<Iterator, char() > DDQUOTE;
qi::rule<Iterator, std::string(), bascii::space_type > non_escaped;
qi::rule<Iterator, std::string(), bascii::space_type > escaped;
qi::rule<Iterator, std::string(), bascii::space_type > field;
qi::rule<Iterator, std::vector<std::string>(), bascii::space_type > start;
csv_parser() : csv_parser::base_type(start)
{
using namespace qi;
using qi::lit;
using qi::lexeme;
using bascii::char_;
start = field % ',';
field = escaped | non_escaped;
escaped = lexeme['"' >> *( char_ -(char_('"') | ',') | COMMA | DDQUOTE) >> '"'];
non_escaped = lexeme[ *( char_ -(char_('"') | ',') ) ];
DDQUOTE = lit("\"\"") [_val = '"'];
COMMA = lit(",") [_val = ','];
}
};
int main()
{
std::cout << "Enter CSV lines [empty] to quit\n";
using bascii::space;
typedef std::string::const_iterator iterator_type;
typedef csv_parser<iterator_type> csv_parser;
csv_parser grammar;
std::string str;
int fid;
while (getline(std::cin, str))
{
fid = 0;
if (str.empty())
break;
std::vector<std::string> csv;
std::string::const_iterator it_beg = str.begin();
std::string::const_iterator it_end = str.end();
bool r = phrase_parse(it_beg, it_end, grammar, space, csv);
if (r && it_beg == it_end)
{
std::cout << "Parsing succeeded\n";
for (auto& field: csv)
{
std::cout << "field " << ++fid << ": " << field << std::endl;
}
}
else
{
std::cout << "Parsing failed\n";
}
}
return 0;
}
Compile:
make csvparser
Test (example stolen from Wikipedia):
./csvparser
Enter CSV lines [empty] to quit
1999,Chevy,"Venture ""Extended Edition, Very Large""",,5000.00
Parsing succeeded
field 1: 1999
field 2: Chevy
field 3: Venture "Extended Edition, Very Large"
field 4:
field 5: 5000.00
1999,Chevy,"Venture ""Extended Edition, Very Large""",,5000.00"
Parsing failed
kubectl run
= kubectl create deployment
kubectl create -f your-object-config.yaml
kubectl delete -f your-object-config.yaml
kubectl replace -f your-object-config.yaml
kubectl diff -f configs/
kubectl apply -f configs/
To run curl from the command line
a) Right-hand-click on "My Computer" icon
b) Select Properties
c) Click 'Advanced system settings' link
d) Go to tab [Advanced] - 'Environment Variables' button
e) Under System variable select 'Path' and Edit button
f) Add a semicolon followed by the path to where you placed your curl.exe (e.g. ;D:\software\curl)
Now you can run from the command line by typing:
curl www.google.com
You can use defaultdict:
>>> from collections import defaultdict
>>> d = defaultdict(list)
>>> a = ['1', '2']
>>> for i in a:
... for j in range(int(i), int(i) + 2):
... d[j].append(i)
...
>>> d
defaultdict(<type 'list'>, {1: ['1'], 2: ['1', '2'], 3: ['2']})
>>> d.items()
[(1, ['1']), (2, ['1', '2']), (3, ['2'])]
/<b>(.*?)<\/b>/g
Add g
(global) flag after:
/<b>(.*?)<\/b>/g.exec(str)
//^-----here it is
However if you want to get all matched elements, then you need something like this:
var str = "<b>Bob</b>, I'm <b>20</b> years old, I like <b>programming</b>.";
var result = str.match(/<b>(.*?)<\/b>/g).map(function(val){
return val.replace(/<\/?b>/g,'');
});
//result -> ["Bob", "20", "programming"]
If an element has attributes, regexp will be:
/<b [^>]+>(.*?)<\/b>/g.exec(str)
In the service.ts file -
a. import 'of' from observable/of
b. create a json list
c. return json object using Observable.of()
Ex. -
import { Injectable } from '@angular/core';
import { Observable } from 'rxjs/Observable';
import { of } from 'rxjs/observable/of';
@Injectable()
export class ClientListService {
private clientList;
constructor() {
this.clientList = [
{name: 'abc', address: 'Railpar'},
{name: 'def', address: 'Railpar 2'},
{name: 'ghi', address: 'Panagarh'},
{name: 'jkl', address: 'Panagarh 2'},
];
}
getClientList () {
return Observable.of(this.clientList);
}
};
In the component where we are calling the get function of the service -
this.clientListService.getClientList().subscribe(res => this.clientList = res);
import re
url = '<p>Hello World</p><a href="http://example.com">More Examples</a><a href="http://example2.com">Even More Examples</a>'
urls = re.findall('https?://(?:[-\w.]|(?:%[\da-fA-F]{2}))+', url)
>>> print urls
['http://example.com', 'http://example2.com']
I solved this problem by changing my application package name according to signature certificate details. At first I created application with com.foo.xyz but my certificate organization was 'bar'. So I change my package name to com.bar.xyz and now there is no google play protect warning!
df[df.duplicated(['ID'], keep=False)]
it'll return all duplicated rows back to you.
According to documentation:
keep : {‘first’, ‘last’, False}, default ‘first’
- first : Mark duplicates as True except for the first occurrence.
- last : Mark duplicates as True except for the last occurrence.
- False : Mark all duplicates as True.
In simple words
$.ajax("info.txt").done(function(data) {
alert(data);
}).fail(function(data){
alert("Try again champ!");
});
if its get the info.text then it will alert and whatever function you add or if any how unable to retrieve info.text from the server then alert or error function.
An example Extension class to simplify this: -
internal static class String
{
public static string TrimEndsCharacter(this string target, char character) => target?.TrimLeadingCharacter(character).TrimTrailingCharacter(character);
public static string TrimLeadingCharacter(this string target, char character) => Match(target?.Substring(0, 1), character) ? target.Remove(0,1) : target;
public static string TrimTrailingCharacter(this string target, char character) => Match(target?.Substring(target.Length - 1, 1), character) ? target.Substring(0, target.Length - 1) : target;
private static bool Match(string value, char character) => !string.IsNullOrEmpty(value) && value[0] == character;
}
Usage
"!Something!".TrimLeadingCharacter('X'); // Result '!Something!' (No Change)
"!Something!".TrimTrailingCharacter('S'); // Result '!Something!' (No Change)
"!Something!".TrimEndsCharacter('g'); // Result '!Something!' (No Change)
"!Something!".TrimLeadingCharacter('!'); // Result 'Something!' (1st Character removed)
"!Something!".TrimTrailingCharacter('!'); // Result '!Something' (Last Character removed)
"!Something!".TrimEndsCharacter('!'); // Result 'Something' (End Characters removed)
"!!Something!!".TrimLeadingCharacter('!'); // Result '!Something!!' (Only 1st instance removed)
"!!Something!!".TrimTrailingCharacter('!'); // Result '!!Something!' (Only Last instance removed)
"!!Something!!".TrimEndsCharacter('!'); // Result '!Something!' (Only End instances removed)
Seems this one works:
.wrap {
-webkit-transform: translateZ(0);
-webkit-mask-image: -webkit-radial-gradient(circle, white 100%, black 100%);
}
You create buttons dynamically because of that you need to call them with .live()
method if you use jquery 1.7
but this method is deprecated (you can see the list of all deprecated method here) in newer version. if you want to use jquery 1.10 or above you need to call your buttons in this way:
$(document).on('click', 'selector', function(){
// Your Code
});
For Example
If your html is something like this
<div id="btn-list">
<div class="btn12">MyButton</div>
</div>
You can write your jquery like this
$(document).on('click', '#btn-list .btn12', function(){
// Your Code
});
Use StreamReader
and direct it to detect the encoding for you:
using (var reader = new System.IO.StreamReader(path, true))
{
var currentEncoding = reader.CurrentEncoding;
}
And use Code Page Identifiers https://msdn.microsoft.com/en-us/library/windows/desktop/dd317756(v=vs.85).aspx in order to switch logic depending on it.
$(function(){
$("input[type='submit']").click(function () {
$(this).attr("disabled", true);
});
});
thant's it.
If you want to use a color from colors.xml , experiment :
public View getView(int position, View convertView, ViewGroup parent) {
...
View rowView = inflater.inflate(this.rowLayoutID, parent, false);
rowView.setBackgroundColor(rowView.getResources().getColor(R.color.my_bg_color));
TextView title = (TextView) rowView.findViewById(R.id.txtRowTitle);
title.setTextColor(
rowView.getResources().getColor(R.color.my_title_color));
...
}
You can use too:
private static final int bgColor = 0xAAAAFFFF;
public View getView(int position, View convertView, ViewGroup parent) {
...
View rowView = inflater.inflate(this.rowLayoutID, parent, false);
rowView.setBackgroundColor(bgColor);
...
}
you need to enable the openssl extension in
C:\wamp\bin\php\php5.4.12\php.ini
that is the php configuration file that has it type has "configuration settings" with a driver-notepad like icon.
there is a semi-colon before the openssl extension
;extension=php_openssl.dll
remove the semi-colon and you'll have
extension=php_openssl.dll
is a small amount of data saved in the browser (client-side)
can be set from PHP with setcookie
and then will be sent to the client's browser (HTTP response header Set-cookie
)
can be set directly client-side in Javascript: document.cookie = 'foo=bar';
if no expiration date is set, by default, it will expire when the browser is closed.
Example: go on http://example.com, open the Console, do document.cookie = 'foo=bar';
. Close the tab, reopen the same website, open the Console, do document.cookie
: you will see foo=bar
is still there. Now close the browser and reopen it, re-visit the same website, open the Console ; you will see document.cookie
is empty.
you can also set a precise expiration date other than "deleted when browser is closed".
the cookies that are stored in the browser are sent to the server in the headers of every request of the same website (see Cookie
). You can see this for example with Chrome by opening Developer tools > Network, click on the request, see Headers:
can be read client-side with document.cookie
can be read server-side with $_COOKIE['foo']
Bonus: it can also be set/get with another language than PHP. Example in Python with "bottle" micro-framework (see also here):
from bottle import get, run, request, response
@get('/')
def index():
if request.get_cookie("visited"):
return "Welcome back! Nice to see you again"
else:
response.set_cookie("visited", "yes")
return "Hello there! Nice to meet you"
run(host='localhost', port=8080, debug=True, reloader=True)
is some data relative to a browser session saved server-side
each server-side language may implement it in a different way
in PHP, when session_start();
is called:
jo96fme9ko0f85cdglb3hl6ah6
/var/lib/php5/sess_jo96fme9ko0f85cdglb3hl6ah6
the session ID is sent to the client in the HTTP response headers, using the traditional cookie mechanism detailed above: Set-Cookie: PHPSESSID=jo96fme9ko0f85cdglb3hl6ah6; path=/
:
(it can also be be sent via the URL instead of cookie but not the default behaviour)
you can see the session ID on client-side with document.cookie
:
the PHPSESSID
cookie is set with no expiration date, thus it will expire when the browser is closed. Thus "sessions" are not valid anymore when the browser is closed / reopened.
can be set/read in PHP with $_SESSION
the client-side does not see the session data but only the ID: do this in index.php
:
<?php
session_start();
$_SESSION["abc"]="def";
?>
The only thing that is seen on client-side is (as mentioned above) the session ID:
because of this, session is useful to store data that you don't want to be seen or modified by the client
you can totally avoid using sessions if you want to use your own database + IDs and send an ID/token to the client with a traditional Cookie
I think this is what you want:
/grand/parent/child[@id="#grand"]
You can also use:
var obj = {
alert: alert.bind(window)
};
obj.alert('I´m an alert!!');
Very convenient tool for logging is http://logging.apache.org/log4net/
You can also make something of themselves less (more) powerful. You can use http://msdn.microsoft.com/ru-ru/library/system.io.filestream (v = vs.110). Aspx
1.right click on your project.
2.click 'Run as' and select 'Maven Build'
3. edit Configuration window will open. write any goal but your problem specific write 'package' in Goal
4 user settings: show your maven->directory->conf->settings.xml
for example; C:\maven\conf\settings.xml
The below code doesn't return the correct screen size sometimes:
MediaQuery.of(context).size
I tested on SAMSUNG SM-T580, which returns {width: 685.7, height: 1097.1}
instead of the real resolution 1920x1080
.
Please use:
import 'dart:ui';
window.physicalSize;
If you were asking how to do it in vue2 and make options to insert and delete it, please, have a look an js fiddle
new Vue({_x000D_
el: '#app',_x000D_
data: {_x000D_
finds: [] _x000D_
},_x000D_
methods: {_x000D_
addFind: function () {_x000D_
this.finds.push({ value: 'def' });_x000D_
},_x000D_
deleteFind: function (index) {_x000D_
console.log(index);_x000D_
console.log(this.finds);_x000D_
this.finds.splice(index, 1);_x000D_
}_x000D_
}_x000D_
});
_x000D_
<script src="https://unpkg.com/[email protected]/dist/vue.js"></script>_x000D_
<div id="app">_x000D_
<h1>Finds</h1>_x000D_
<div v-for="(find, index) in finds">_x000D_
<input v-model="find.value">_x000D_
<button @click="deleteFind(index)">_x000D_
delete_x000D_
</button>_x000D_
</div>_x000D_
_x000D_
<button @click="addFind">_x000D_
New Find_x000D_
</button>_x000D_
_x000D_
<pre>{{ $data }}</pre>_x000D_
</div>
_x000D_
String
s in java are objects, so when comparing with ==
, you are comparing references, rather than values. The correct way is to use equals()
.
However, there is a way. If you want to compare String
objects using the ==
operator, you can make use of the way the JVM copes with strings. For example:
String a = "aaa";
String b = "aaa";
boolean b = a == b;
b
would be true
. Why?
Because the JVM has a table of String
constants. So whenever you use string literals (quotes "
), the virtual machine returns the same objects, and therefore ==
returns true
.
You can use the same "table" even with non-literal strings by using the intern()
method. It returns the object that corresponds to the current string value from that table (or puts it there, if it is not). So:
String a = new String("aa");
String b = new String("aa");
boolean check1 = a == b; // false
boolean check1 = a.intern() == b.intern(); // true
It follows that for any two strings s and t, s.intern() == t.intern() is true if and only if s.equals(t) is true.
Here's a more flexible way.
let's say this is your form.
<form>
<input type='checkbox' name='user_ids[]' value='1'id='checkbox_1' />
<input type='checkbox' name='user_ids[]' value='2'id='checkbox_2' />
<input type='checkbox' name='user_ids[]' value='3'id='checkbox_3' />
<input name="confirm" type="button" value="confirm" onclick="submit_form();" />
</form>
And this is your jquery ajax below...
// Don't get confused at this portion right here
// cuz "var data" will get all the values that the form
// has submitted in the $_POST. It doesn't matter if you
// try to pass a text or password or select form element.
// Remember that the "form" is not a name attribute
// of the form, but the "form element" itself that submitted
// the current post method
var data = $("form").serialize();
$.ajax({
url: "link/of/your/ajax.php", // link of your "whatever" php
type: "POST",
async: true,
cache: false,
data: data, // all data will be passed here
success: function(data){
alert(data) // The data that is echoed from the ajax.php
}
});
And in your ajax.php, you try echoing or print_r your post to see what's happening inside it. This should look like this. Only checkboxes that you checked will be returned. If you didn't checked any, it will return an error.
<?php
print_r($_POST); // this will be echoed back to you upon success.
echo "This one too, will be echoed back to you";
Hope that is clear enough.
class a
{
public $a = 'aaa';
}
$a = new a();
echo $a->a; // Writes 'aaa'
echo $a->b; // Notice: Undefined property: a::$b
echo $a->a ?? '$a->a does not exists'; // Writes 'aaa'
// Does not throw an error although $a->b does not exist.
echo $a->b ?? '$a->b does not exist.'; // Writes $a->b does not exist.
// Does not throw an error although $a->b and also $a->b->c does not exist.
echo $a->b->c ?? '$a->b->c does not exist.'; // Writes $a->b->c does not exist.
It is possible. You do everything pretty much the same way except use the swift syntax. For example you could make a UIButton in code like this:
var button: UIButton = UIButton(frame: CGRectMake(0, 0, 100, 100))
Refer this:
@RequestMapping(value="download", method=RequestMethod.GET)
public void getDownload(HttpServletResponse response) {
// Get your file stream from wherever.
InputStream myStream = someClass.returnFile();
// Set the content type and attachment header.
response.addHeader("Content-disposition", "attachment;filename=myfilename.txt");
response.setContentType("txt/plain");
// Copy the stream to the response's output stream.
IOUtils.copy(myStream, response.getOutputStream());
response.flushBuffer();
}
The answer to that can be quite broad.
Essentially, the major difference for me that usually influences my decisions on which to use is that with a SQLDataReader, you are "streaming" data from the database. With a SQLDataAdapter, you are extracting the data from the database into an object that can itself be queried further, as well as performing CRUD operations on.
Obviously with a stream of data SQLDataReader is MUCH faster, but you can only process one record at a time. With a SQLDataAdapter, you have a complete collection of the matching rows to your query from the database to work with/pass through your code.
WARNING: If you are using a SQLDataReader, ALWAYS, ALWAYS, ALWAYS make sure that you write proper code to close the connection since you are keeping the connection open with the SQLDataReader. Failure to do this, or proper error handling to close the connection in case of an error in processing the results will CRIPPLE your application with connection leaks.
Pardon my VB, but this is the minimum amount of code you should have when using a SqlDataReader:
Using cn As New SqlConnection("..."), _
cmd As New SqlCommand("...", cn)
cn.Open()
Using rdr As SqlDataReader = cmd.ExecuteReader()
While rdr.Read()
''# ...
End While
End Using
End Using
equivalent C#:
using (var cn = new SqlConnection("..."))
using (var cmd = new SqlCommand("..."))
{
cn.Open();
using(var rdr = cmd.ExecuteReader())
{
while(rdr.Read())
{
//...
}
}
}
The issue could be with the response you are receiving from back-end. If it was working fine on the server then the problem could be with the response headers. Check the Access-Control-Allow-Origin (ACAO) in the response headers. Usually react's fetch API will throw fail to fetch even after receiving response when the response headers' ACAO and the origin of request won't match.
Linking to my answer on a duplicate question. Not only is the URL available in the browsers history, the server side logs but it's also sent as the HTTP Referer header which if you use third party content, exposes the URL to sources outside your control.
s = 'sdsd'
print (s.upper())
upper = raw_input('type in something lowercase.')
lower = raw_input('type in the same thing caps lock.')
print upper.upper()
print lower.lower()
Change the input type to "button". As T.J. and Pav said, the form is getting submitted. Your Javascript looks correct, and I commend you for trying it out the non-JQuery way :)
Use something as simple as the following list comprehension, noting that we do not need to test 1 and the number we are trying to find:
def factors(n):
return [x for x in range(2, n//2+1) if n%x == 0]
In reference to the use of square root, say we want to find factors of 10. The integer portion of the sqrt(10) = 4
therefore range(1, int(sqrt(10))) = [1, 2, 3, 4]
and testing up to 4 clearly misses 5.
Unless I am missing something I would suggest, if you must do it this way, using int(ceil(sqrt(x)))
. Of course this produces a lot of unnecessary calls to functions.
I had such problem with storage json-string in MySQL. Don't really know why, but using htmlspecialchars_decode berofe json_decode resolved problem.
docker run -it -name YOUR_NAME IMAGE_ID /bin/bash
$>vi path_to_file
Here's a solution that keeps things within a dplyr pipe chain. You sort the data in advance, and then using mutate_at to convert to a factor. I've modified the data slightly to show how this solution can be applied generally, given data that can be sensibly sorted:
# the data
temp <- data.frame(type=rep(c("T", "F", "P"), 4),
size=rep(c("50%", "100%", "200%", "150%"), each=3), # cannot sort this
size_num = rep(c(.5, 1, 2, 1.5), each=3), # can sort this
amount=c(48.4, 48.1, 46.8,
25.9, 26.0, 24.9,
20.8, 21.5, 16.5,
21.1, 21.4, 20.1))
temp %>%
arrange(size_num) %>% # sort
mutate_at(vars(size), funs(factor(., levels=unique(.)))) %>% # convert to factor
ggplot() +
geom_bar(aes(x = type, y=amount, fill=type),
position="dodge", stat="identity") +
facet_grid(~ size)
You can apply this solution to arrange the bars within facets, too, though you can only choose a single, preferred order:
temp %>%
arrange(size_num) %>%
mutate_at(vars(size), funs(factor(., levels=unique(.)))) %>%
arrange(desc(amount)) %>%
mutate_at(vars(type), funs(factor(., levels=unique(.)))) %>%
ggplot() +
geom_bar(aes(x = type, y=amount, fill=type),
position="dodge", stat="identity") +
facet_grid(~ size)
ggplot() +
geom_bar(aes(x = type, y=amount, fill=type),
position="dodge", stat="identity") +
facet_grid(~ size)
for all windows os
cd C:\Program Files (x86)\Git\bin
ssh-keygen
I have a slightly different way of doing this than the accepted answer. This way you can avoid using GROUP_CONCAT which has a limit of 1024 characters and will not work if you have a lot of fields.
SET @sql = '';
SELECT
@sql := CONCAT(@sql,if(@sql='','',', '),temp.output)
FROM
(
SELECT
DISTINCT
CONCAT(
'MAX(IF(pa.fieldname = ''',
fieldname,
''', pa.fieldvalue, NULL)) AS ',
fieldname
) as output
FROM
product_additional
) as temp;
SET @sql = CONCAT('SELECT p.id
, p.name
, p.description, ', @sql, '
FROM product p
LEFT JOIN product_additional AS pa
ON p.id = pa.id
GROUP BY p.id');
PREPARE stmt FROM @sql;
EXECUTE stmt;
DEALLOCATE PREPARE stmt;
Craigslist does have a "bulk posting interface" which allows for multiple posts to happen at once through HTTPS POST. See:
Most of the time when we download tomcat and extract the file a folder will be created:
C:\Program Files\apache-tomcat-9.0.1-windows-x64
Inside that actual tomcat folder will be there:
C:\Program Files\apache-tomcat-9.0.1-windows-x64\apache-tomcat-9.0.1
so while selecting you need to select inner folder:
C:\Program Files\apache-tomcat-9.0.1-windows-x64\apache-tomcat-9.0.1
instead of the outer.
You can click the settings icon on top right corner ...
| More Tools | Developer Tools | Network | Disable cache (while DevTools is open)
For windows, this is F12 or CTRL + SHIFT + I while on mac CMD + SHIFT + I opens up DevTools.
New path for Chrome Update Sept 2018:
Click settings icon on the top right corner ...
| Settings | Preferences | Developer Tools | Network | Disable cache (while DevTools is open)
InstallUtil classes ( ServiceInstaller ) are considered an anti-pattern by the Windows Installer community. It's a fragile, out of process, reinventing of the wheel that ignores the fact that Windows Installer has built-in support for Services.
Visual Studio deployment projects ( also not highly regarded and deprecated in the next release of Visual Studio ) do not have native support for services. But they can consume merge modules. So I would take a look at this blog article to understand how to create a merge module using Windows Installer XML that can express the service and then consume that merge module in your VDPROJ solution.
Augmenting InstallShield using Windows Installer XML - Windows Services
Use this code :
<input type="button" onclick="demoShow()" value="edit" />
<script type="text/javascript">
function demoShow()
{document.getElementById("p2").style.visibility="hidden";}
</script>
<input id="p2" type="submit" value="submit" name="submit" />
EDIT (Jun 5 2019): While the idea that "TypeScript supports Map
natively" is still true, since version 2.1 TypeScript supports something called Record
.
type MyMapLikeType = Record<string, IPerson>;
const peopleA: MyMapLikeType = {
"a": { name: "joe" },
"b": { name: "bart" },
};
Unfortunately the first generic parameter (key type) is still not fully respected: even with a string
type, something like peopleA[0]
(a number
) is still valid.
EDIT (Apr 25 2016): The answer below is old and should not be considered the best answer. TypeScript does support Maps "natively" now, so it simply allows ES6 Maps to be used when the output is ES6. For ES5, it does not provide polyfills; you need to embed them yourself.
For more information, refer to mohamed hegazy's answer below for a more modern answer, or even this reddit comment for a short version.
As of 1.5.0 beta, TypeScript does not yet support Maps. It is not yet part of the roadmap, either.
The current best solution is an object with typed key and value (sometimes called a hashmap). For an object with keys of type string
, and values of type number
:
var arr : { [key:string]:number; } = {};
Some caveats, however:
string
or number
With the above example:
// OK:
arr["name"] = 1; // String key is fine
arr[0] = 0; // Number key is fine too
// Not OK:
arr[{ a: "a" }] = 2; // Invalid key
arr[3] = "name"; // Invalid value
Multiple Non-query example if anyone is interested.
using (OdbcConnection DbConnection = new OdbcConnection("ConnectionString"))
{
DbConnection.Open();
using (OdbcCommand DbCommand = DbConnection.CreateCommand())
{
DbCommand.CommandText = "INSERT...";
DbCommand.Parameters.Add("@Name", OdbcType.Text, 20).Value = "name";
DbCommand.ExecuteNonQuery();
DbCommand.Parameters.Clear();
DbCommand.Parameters.Add("@Name", OdbcType.Text, 20).Value = "name2";
DbCommand.ExecuteNonQuery();
}
}
These links explain it with examples
http://dotnetperls.com/openfiledialog
http://www.geekpedia.com/tutorial67_Using-OpenFileDialog-to-open-files.html
private void button1_Click(object sender, EventArgs e)
{
int size = -1;
DialogResult result = openFileDialog1.ShowDialog(); // Show the dialog.
if (result == DialogResult.OK) // Test result.
{
string file = openFileDialog1.FileName;
try
{
string text = File.ReadAllText(file);
size = text.Length;
}
catch (IOException)
{
}
}
Console.WriteLine(size); // <-- Shows file size in debugging mode.
Console.WriteLine(result); // <-- For debugging use.
}
You can do it like this:
var mongoose = require('mongoose');
var _id = mongoose.mongo.BSONPure.ObjectID.fromHexString("4eb6e7e7e9b7f4194e000001");
EDIT: New standard has fromHexString rather than fromString
Another useful way of doing it that I use is unions:
union byteint
{
byte b[sizeof int];
int i;
};
byteint bi;
bi.i = 1337;
for(int i = 0; i<4;i++)
destination[i] = bi.b[i];
This will make it so that the byte array and the integer will "overlap"( share the same memory ). this can be done with all kinds of types, as long as the byte array is the same size as the type( else one of the fields will not be influenced by the other ). And having them as one object is also just convenient when you have to switch between integer manipulation and byte manipulation/copying.
Below solution help to find out no of character present from a string with a limitation:
1) using SELECT LEN(REPLACE(myColumn, 'N', '')), but limitation and wrong output in below condition:
SELECT LEN(REPLACE('YYNYNYYNNNYYNY', 'N', ''));
--8 --CorrectSELECT LEN(REPLACE('123a123a12', 'a', ''));
--8 --WrongSELECT LEN(REPLACE('123a123a12', '1', ''));
--7 --Wrong
2) Try with below solution for correct output:
select dbo.vj_count_char_from_string('123a123a12','2');
--2 --Correctselect dbo.vj_count_char_from_string('123a123a12','a');
--2 --Correct
-- ================================================
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
-- =============================================
-- Author: VIKRAM JAIN
-- Create date: 20 MARCH 2019
-- Description: Count char from string
-- =============================================
create FUNCTION vj_count_char_from_string
(
@string nvarchar(500),
@find_char char(1)
)
RETURNS integer
AS
BEGIN
-- Declare the return variable here
DECLARE @total_char int; DECLARE @position INT;
SET @total_char=0; set @position = 1;
-- Add the T-SQL statements to compute the return value here
if LEN(@string)>0
BEGIN
WHILE @position <= LEN(@string) -1
BEGIN
if SUBSTRING(@string, @position, 1) = @find_char
BEGIN
SET @total_char+= 1;
END
SET @position+= 1;
END
END;
-- Return the result of the function
RETURN @total_char;
END
GO
This was too good of an answer not to post it here. It's from a Gilles, a fellow user from askubuntu:
The clipboard is provided by the X server. It doesn't matter whether the server is headless or not, what matters is that your local graphical session is available to programs running on the remote machine. Thanks to X's network-transparent design, this is possible.
I assume that you're connecting to the remote server with SSH from a machine running Linux. Make sure that X11 forwarding is enabled both in the client configuration and in the server configuration. In the client configuration, you need to have the line
ForwardX11 yes
in~/.ssh/config
to have it on by default, or pass the option-X
to thessh
command just for that session. In the server configuration, you need to have the lineX11Forwarding yes
in/etc/ssh/sshd_config
(it is present by default on Ubuntu).To check whether X11 forwarding is enabled, look at the value of the
DISPLAY
environment variable:echo $DISPLAY
. You should see a value likelocalhost:10
(applications running on the remote machine are told to connect to a display running on the same machine, but that display connection is in fact forwarded by SSH to your client-side display). Note that ifDISPLAY
isn't set, it's no use setting it manually: the environment variable is always set correctly if the forwarding is in place. If you need to diagnose SSH connection issues, pass the option-vvv
tossh
to get a detailed trace of what's happening.If you're connecting through some other means, you may or may not be able to achieve X11 forwarding. If your client is running Windows, PuTTY supports X11 forwarding; you'll have to run an X server on the Windows machine such as Xming.
By Gilles from askubuntu
Take a look at Enumerable#each_slice:
foo.each_slice(3).to_a
#=> [["1", "2", "3"], ["4", "5", "6"], ["7", "8", "9"], ["10"]]
The best solution would be to use the npm module called node-fs-extra. It has a method called mkdir
which creates the directory you mentioned. If you give a long directory path, it will create the parent folders automatically. The module is a super set of npm module fs
, so you can use all the functions in fs
also if you add this module.
an alt example I just used because I wanted more flexibility than a typical .json file but didn't want it abstracted away into a library which would require a dependency is something like this. Basically, exporting a function invoked immediately which returned an object with values I wanted set. Gives a lot of flexibility.
module.exports = function(){
switch(node_env){
case 'dev':
return
{ var1 = 'development'};
}
}();
There is a much better explanation with full example here. Using Config Files in Node.js
this in your callback function refers to the clicked element.
$(".addressClick").click(function () {
var addressValue = $(this).attr("href");
alert(addressValue );
});
As described in this blog post, here is a method to round the corners of a UIView:
+(void)roundView:(UIView *)view onCorner:(UIRectCorner)rectCorner radius:(float)radius
{
UIBezierPath *maskPath = [UIBezierPath bezierPathWithRoundedRect:view.bounds
byRoundingCorners:rectCorner
cornerRadii:CGSizeMake(radius, radius)];
CAShapeLayer *maskLayer = [[CAShapeLayer alloc] init];
maskLayer.frame = view.bounds;
maskLayer.path = maskPath.CGPath;
[view.layer setMask:maskLayer];
[maskLayer release];
}
The cool part about it is that you can select which corners you want rounded up.
There is an open source library MgntUtils that has a Utility class StringUnicodeEncoderDecoder. That class provides static methods that convert any String into Unicode sequence vise-versa. Very simple and useful. To convert String you just do:
String codes = StringUnicodeEncoderDecoder.encodeStringToUnicodeSequence(myString);
For example a String "Hello World" will be converted into
"\u0048\u0065\u006c\u006c\u006f\u0020\u0057\u006f\u0072\u006c\u0064"
It works with any language. Here is the link to the article that explains all te ditails about the library: MgntUtils. Look for the subtitle "String Unicode converter". The library could be obtained as a Maven artifact or taken from Github (including source code and Javadoc)
Secondary data files are optional, are user-defined, and store user data. Secondary files can be used to spread data across multiple disks by putting each file on a different disk drive. Additionally, if a database exceeds the maximum size for a single Windows file, you can use secondary data files so the database can continue to grow.
Source: MSDN: Understanding Files and Filegroups
The recommended file name extension for secondary data files is .ndf
, but this is not enforced.
Angular ui-router supports nested views. I haven't used it yet but looks very promising.
Maybe you could try this code:
import java.io.*;
public class Test
{
public static void main(String[] args)
{
try
{
BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
String userInput = in.readLine();
System.out.println("\n\nUser entered -> " + userInput);
}
catch(IOException e)
{
System.out.println("IOException has been caught");
}
}
}
While the other answers seem to make it pretty clear that there is generally no reason to use non-static constants, I couldn't find anyone pointing out that it is possible to have various instances with different values on their constant variables.
Consider the following example:
public class TestClass {
private final static double NUMBER = Math.random();
public TestClass () {
System.out.println(NUMBER);
}
}
Creating three instances of TestClass would print the same random value three times, since only one value is generated and stored into the static constant.
However, when trying the following example instead:
public class TestClass {
private final double NUMBER = Math.random();
public TestClass () {
System.out.println(NUMBER);
}
}
Creating three instances of TestClass would now print three different random values, because each instance has its own randomly generated constant value.
I can't think of any situation where it would be really useful to have different constant values on different instances, but I hope this helps pointing out that there is a clear difference between static and non-static finals.
CMD
command mentioned inside Dockerfile
file can be overridden via docker run
command while ENTRYPOINT
can not be.
Here are two simple functions for serialization of any non-sophisticated classes, nothing fancy as explained before.
I use this for configuration type stuff because I can add new members to the classes with no code adjustments.
import json
class SimpleClass:
def __init__(self, a=None, b=None, c=None):
self.a = a
self.b = b
self.c = c
def serialize_json(instance=None, path=None):
dt = {}
dt.update(vars(instance))
with open(path, "w") as file:
json.dump(dt, file)
def deserialize_json(cls=None, path=None):
def read_json(_path):
with open(_path, "r") as file:
return json.load(file)
data = read_json(path)
instance = object.__new__(cls)
for key, value in data.items():
setattr(instance, key, value)
return instance
# Usage: Create class and serialize under Windows file system.
write_settings = SimpleClass(a=1, b=2, c=3)
serialize_json(write_settings, r"c:\temp\test.json")
# Read back and rehydrate.
read_settings = deserialize_json(SimpleClass, r"c:\temp\test.json")
# results are the same.
print(vars(write_settings))
print(vars(read_settings))
# output:
# {'c': 3, 'b': 2, 'a': 1}
# {'c': 3, 'b': 2, 'a': 1}
We do it differently. IMHO we do it in an easier way: in master
we are working on the next major version.
Each larger feature gets its own branch (derived from master) and will be rebased (+ force pushed) on top of master regularly by the developer. Rebasing only works fine if a single developer works on this feature. If the feature is finished, it will be freshly rebased onto master and then the master fast-forwarded to the latest feature commit.
To avoid the rebasing/forced push one also can merge master changes regularly to the feature branch and if it's finished merge the feature branch into master (normal merge or squash merge). But IMHO this makes the feature branch less clear and makes it much more difficult to reorder/cleanup the commits.
If a new release is coming, we create a side-branch out of master, e.g. release-5
where only bugs get fixed.
I had a similar issue as this. I had an issue with using multiple Array.map()'s in a row (around 8 maps at once) and was getting a maximum_call_stack_exceeded error. I solved this by changing the map's into 'for' loops
So if you are using alot of map calls, changing them to for loops may fix the problem
Edit
Just for clarity and probably-not-needed-but-good-to-know-info, using .map()
causes the array to be prepped (resolving getters , etc) and the callback to be cached, and also internally keeps an index of the array (so the callback is provided with the correct index/value). This stacks with each nested call, and caution is advised when not nested as well, as the next .map()
could be called before the first array is garbage collected (if at all).
Take this example:
var cb = *some callback function*
var arr1 , arr2 , arr3 = [*some large data set]
arr1.map(v => {
*do something
})
cb(arr1)
arr2.map(v => {
*do something // even though v is overwritten, and the first array
// has been passed through, it is still in memory
// because of the cached calls to the callback function
})
If we change this to:
for(var|let|const v in|of arr1) {
*do something
}
cb(arr1)
for(var|let|const v in|of arr2) {
*do something // Here there is not callback function to
// store a reference for, and the array has
// already been passed of (gone out of scope)
// so the garbage collector has an opportunity
// to remove the array if it runs low on memory
}
I hope this makes some sense (I don't have the best way with words) and helps a few to prevent the head scratching I went through
If anyone is interested, here is also a performance test comparing map and for loops (not my work).
https://github.com/dg92/Performance-Analysis-JS
For loops are usually better than map, but not reduce, filter, or find
Try just:
powershell.exe -noexit D:\Work\SQLExecutor.ps1 -gettedServerName "MY-PC"
yourPictureBox.ImageLocation = "http://www.gravatar.com/avatar/6810d91caff032b202c50701dd3af745?d=identicon&r=PG"
Just a quick chime in here to hopefully help others... Especially with the newer version (since this is 2 years old)...
Instead of having some static fields defined in JS, you can also use the data-rule-*
attributes. You can use built-in rules as well as custom rules.
See http://jqueryvalidation.org/documentation/#link-list-of-built-in-validation-methods for built-in rules.
Example:
<p><label>Email: <input type="text" name="email" id="email" data-rule-email="true" required></label></p>
<p><label>Confirm Email: <input type="text" name="email" id="email_confirm" data-rule-email="true" data-rule-equalTo="#email" required></label></p>
Note the data-rule-*
attributes.
The ENTER key merely activates the form's default submit button, which will be the first
<input type="submit" />
the browser finds within the form.
Therefore don't have a submit button, but something like
<input type="button" value="Submit" onclick="submitform()" />
EDIT: In response to discussion in comments:
This doesn't work if you have only one text field - but it may be that is the desired behaviour in that case.
The other issue is that this relies on Javascript to submit the form. This may be a problem from an accessibility point of view. This can be solved by writing the <input type='button'/>
with javascript, and then put an <input type='submit' />
within a <noscript>
tag. The drawback of this approach is that for javascript-disabled browsers you will then have form submissions on ENTER. It is up to the OP to decide what is the desired behaviour in this case.
I know of no way of doing this without invoking javascript at all.
I have had a similar issue, and I wonder if this can be useful as well: https://stackoverflow.com/a/11443066
var xsrf = $.param({fkey: "key"});
$http({
method: 'POST',
url: url,
data: xsrf,
headers: {'Content-Type': 'application/x-www-form-urlencoded'}
})
Regards,
you can use skimage.img_as_ubyte(yourdata)
it will make you numpy array ranges from 0->255
from skimage import img_as_ubyte
img = img_as_ubyte(data)
cv2.imshow("Window", img)
I had the same warning and found that removing an unused @id got rid of the warning. For me it was obvious as the @id was associated with a growing list of textViews linked to a database, so there was a warning for each entry.
On CodeProject, there is an article that briefly discusses pros and cons of testing private methods. It then provides some reflection code to access private methods (similar to the code Marcus provides above.) The only issue I've found with the sample is that the code doesn't take into account overloaded methods.
You can find the article here:
Swift4 Code
Try this some new extension methods:
import UIKit
extension UIView {
fileprivate struct AssociatedObjectKeys {
static var tapGestureRecognizer = "MediaViewerAssociatedObjectKey_mediaViewer"
}
fileprivate typealias Action = (() -> Void)?
fileprivate var tapGestureRecognizerAction: Action? {
set {
if let newValue = newValue {
// Computed properties get stored as associated objects
objc_setAssociatedObject(self, &AssociatedObjectKeys.tapGestureRecognizer, newValue, objc_AssociationPolicy.OBJC_ASSOCIATION_RETAIN)
}
}
get {
let tapGestureRecognizerActionInstance = objc_getAssociatedObject(self, &AssociatedObjectKeys.tapGestureRecognizer) as? Action
return tapGestureRecognizerActionInstance
}
}
public func addTapGestureRecognizer(action: (() -> Void)?) {
self.isUserInteractionEnabled = true
self.tapGestureRecognizerAction = action
let tapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(handleTapGesture))
self.addGestureRecognizer(tapGestureRecognizer)
}
@objc fileprivate func handleTapGesture(sender: UITapGestureRecognizer) {
if let action = self.tapGestureRecognizerAction {
action?()
} else {
print("no action")
}
}
}
Now whenever we want to add a UITapGestureRecognizer
to a UIView
or UIView
subclass like UIImageView
, we can do so without creating associated functions for selectors!
Usage:
profile_ImageView.addTapGestureRecognizer {
print("image tapped")
}
I use the following which will check if package is installed and if dependencies are updated, then loads the package.
p<-c('ggplot2','Rcpp')
install_package<-function(pack)
{if(!(pack %in% row.names(installed.packages())))
{
update.packages(ask=F)
install.packages(pack,dependencies=T)
}
require(pack,character.only=TRUE)
}
for(pack in p) {install_package(pack)}
completeFun <- function(data, desiredCols) {
completeVec <- complete.cases(data[, desiredCols])
return(data[completeVec, ])
}
It's worth noting that if your error is due to .htaccess, for example a missing rewrite_module, you'll still see the 500 internal server error.
this will unhide all files and folders on your computer
attrib -r -s -h /S /D
You could do something like this:
> +(Math.floor(y/x)*x).toFixed(15);
1.2
If you want to select every element that has class attribute "myclass" use
$('#mydiv .myclass');
If you want to select only div elements that has class attribute "myclass" use
$("div#mydiv div.myclass");
find more about jquery selectors refer these articles
With C++11, you don't even need the length/size. As long as the string is not empty, you can do the following:
if (!st.empty())
st.erase(std::prev(st.end())); // Erase element referred to by iterator one
// before the end
These code lines can help you quickly enable log setting in your magento site.
INSERT INTO `core_config_data` (`config_id`, `scope`, `scope_id`, `path`, `value`) VALUES
('', 'default', 0, 'dev/log/active', '1'),
('', 'default', 0, 'dev/log/file', 'system.log'),
('', 'default', 0, 'dev/log/exception_file', 'exception.log');
Then you can see them inside the folder: /var/log
under root installation.
Information source: Python Docs
To get month number from month name use datetime module
import datetime
month_number = datetime.datetime.strptime(month_name, '%b').month
# To get month name
In [2]: datetime.datetime.strftime(datetime.datetime.now(), '%a %b %d, %Y')
Out [2]: 'Thu Aug 10, 2017'
# To get just the month name, %b gives abbrevated form, %B gives full month name
# %b => Jan
# %B => January
dateteime.datetime.strftime(datetime_object, '%b')
In python, you can put ‘j’ or ‘J’ after a number to make it imaginary, so you can write complex literals easily:
>>> 1j
1j
>>> 1J
1j
>>> 1j * 1j
(-1+0j)
The ‘j’ suffix comes from electrical engineering, where the variable ‘i’ is usually used for current. (Reasoning found here.)
The type of a complex number is complex
, and you can use the type as a constructor if you prefer:
>>> complex(2,3)
(2+3j)
A complex number has some built-in accessors:
>>> z = 2+3j
>>> z.real
2.0
>>> z.imag
3.0
>>> z.conjugate()
(2-3j)
Several built-in functions support complex numbers:
>>> abs(3 + 4j)
5.0
>>> pow(3 + 4j, 2)
(-7+24j)
The standard module cmath
has more functions that handle complex numbers:
>>> import cmath
>>> cmath.sin(2 + 3j)
(9.15449914691143-4.168906959966565j)
In my case I don't have issues with ~/.composer
.
So being inside Laravel app root folder, I did sudo chown -R $USER composer.lock
and it was helpful.
You need to define height of ul or your div and set overflow equals to auto as below:
<ul style="width: 300px; height: 200px; overflow: auto">
<li>text</li>
<li>text</li>
You can use bash. Note for very large files in terms of GB, use awk/wc
. However it should still be manageable in performance for files with a few MB.
declare -i count=0
while read
do
((count++))
done < file
echo "line count: $count"
Here is a good tutorial with code. Let me know if it works for you! This is also a good tutorial.
EDIT
In This example, all you need to do is add this line:
gallery.setSelection(1);
after setting the adapter to gallery object, that is this line:
gallery.setAdapter(new ImageAdapter(this));
UPDATE1
Alright, I got your problem. This open source library is your solution. I also have used it for one of my projects. Hope this will solve your problem finally.
UPDATE2:
I would suggest you to go through this tutorial. You might get idea. I think I got your problem, you want the horizontal scrollview with snap. Try to search with that keyword on google or out here, you might get your solution.
Based on your description in the comments, you'd simply do an array concat:
var jsonArray1 = [{'name': "doug", 'id':5}, {'name': "dofug", 'id':23}];
var jsonArray2 = [{'name': "goud", 'id':1}, {'name': "doaaug", 'id':52}];
jsonArray1 = jsonArray1.concat(jsonArray2);
// jsonArray1 = [{'name': "doug", 'id':5}, {'name': "dofug", 'id':23},
//{'name': "goud", 'id':1}, {'name': "doaaug", 'id':52}];
you don't need define positioning when you need vertical align center for inline and block elements you can take mentioned below idea:-
inline-elements :- <img style="vertical-align:middle" ...>
<span style="display:inline-block; vertical-align:middle"> foo<br>bar </span>
block-elements :- <td style="vertical-align:middle"> ... </td>
<div style="display:table-cell; vertical-align:middle"> ... </div>
see the demo:- http://jsfiddle.net/Ewfkk/2/
In Codeigniter This is simple Way to check between two date records ...
$start_date='2016-01-01';
$end_date='2016-01-31';
$this->db->where('date BETWEEN "'. date('Y-m-d', strtotime($start_date)). '" and "'. date('Y-m-d', strtotime($end_date)).'"');
I believe you intended it more this way:
foreach (DataTable table in ds.Tables)
{
foreach (DataRow dr in table.Rows)
{
DateTime TaskStart = DateTime.Parse(dr["TaskStart"].ToString());
TaskStart.ToString("dd-MMMM-yyyy");
rpt.SetParameterValue("TaskStartDate", TaskStart);
}
}
You always accessed your first row in your dataset.
AFAIK, there's no clean way to implement a "logout" function when using htaccess (i.e. HTTP-based) authentication.
This is because such authentication uses the HTTP error code '401' to tell the browser that credentials are required, at which point the browser prompts the user for the details. From then on, until the browser is closed, it will always send the credentials without further prompting.
lowercase-with-hyphens
is the style I most often see on GitHub.*
lowercase_with_underscores
is probably the second most popular style I see.
The former is my preference because it saves keystrokes.
* Anecdotal; I haven't collected any data.
If you always search based on value3
, you could store the objects in a Map:
Map<String, List<Sample>> map = new HashMap <>();
You can then populate the map with key = value3
and value = list of Sample objects with that same value3
property.
You can then query the map:
List<Sample> allSamplesWhereValue3IsDog = map.get("Dog");
Note: if no 2 Sample
instances can have the same value3
, you can simply use a Map<String, Sample>
.
Thanks for the great answer @user3136169, here is an example of how that might be done also removing NoneType values.
def regex_filter(val):
if val:
mo = re.search(regex,val)
if mo:
return True
else:
return False
else:
return False
df_filtered = df[df['col'].apply(regex_filter)]
Also you can also add regex as an arg:
def regex_filter(val,myregex):
...
df_filtered = df[df['col'].apply(res_regex_filter,regex=myregex)]
Perhaps a combination of these plugins may come in handy:
HTML
<form ... id ="GoogleMapsApiKeyForm">
...
<input name="GoogleMapsAPIKey" type="text" class="form-control" placeholder="Enter Google maps API key" />
....
<span class="text-danger" id="GoogleMapsAPIKey-errorMsg"></span>'
...
<button type="submit" class="btn btn-primary">Save</button>
</form>
Javascript
$(function () {
$("#GoogleMapsApiKeyForm").validate({
rules: {
GoogleMapsAPIKey: {
required: true
}
},
messages: {
GoogleMapsAPIKey: 'Google maps api key is required',
},
errorPlacement: function (error, element) {
if (element.attr("name") == "GoogleMapsAPIKey")
$("#GoogleMapsAPIKey-errorMsg").html(error);
},
submitHandler: function (form) {
// form.submit(); //if you need Ajax submit follow for rest of code below
}
});
//If you want to use ajax
$("#GoogleMapsApiKeyForm").submit(function (e) {
e.preventDefault();
if (!$("#GoogleMapsApiKeyForm").valid())
return;
//Put your ajax call here
});
});
No, there is no such printf width specifier to print floating-point with maximum precision. Let me explain why.
The maximum precision of float
and double
is variable, and dependent on the actual value of the float
or double
.
Recall float
and double
are stored in sign.exponent.mantissa format. This means that there are many more bits used for the fractional component for small numbers than for big numbers.
For example, float
can easily distinguish between 0.0 and 0.1.
float r = 0;
printf( "%.6f\n", r ) ; // 0.000000
r+=0.1 ;
printf( "%.6f\n", r ) ; // 0.100000
But float
has no idea of the difference between 1e27
and 1e27 + 0.1
.
r = 1e27;
printf( "%.6f\n", r ) ; // 999999988484154753734934528.000000
r+=0.1 ;
printf( "%.6f\n", r ) ; // still 999999988484154753734934528.000000
This is because all the precision (which is limited by the number of mantissa bits) is used up for the large part of the number, left of the decimal.
The %.f
modifier just says how many decimal values you want to print from the float number as far as formatting goes. The fact that the accuracy available depends on the size of the number is up to you as the programmer to handle. printf
can't/doesn't handle that for you.
If you just want to check a true or false based on the WHERE clause, select 1 from table where condition is the cheapest way.
This did not work for me when I had done something like develop > release-v1.0.0 > feature-foo
, it would go all the way back to develop, note there was a rebase involved, not sure if that is compounding my issue...
The following did give the correct commit hash for me
git log --decorate \
| grep 'commit' \
| grep 'origin/' \
| head -n 2 \
| tail -n 1 \
| awk '{ print $2 }' \
| tr -d "\n"
Here is a simple .split
solution that works without regex.
This is an answer for Python split() without removing the delimiter, so not exactly what the original post asks but the other question was closed as a duplicate for this one.
def splitkeep(s, delimiter):
split = s.split(delimiter)
return [substr + delimiter for substr in split[:-1]] + [split[-1]]
Random tests:
import random
CHARS = [".", "a", "b", "c"]
assert splitkeep("", "X") == [""] # 0 length test
for delimiter in ('.', '..'):
for _ in range(100000):
length = random.randint(1, 50)
s = "".join(random.choice(CHARS) for _ in range(length))
assert "".join(splitkeep(s, delimiter)) == s
Guava provides this: Lists.reverse(List)
List<String> letters = ImmutableList.of("a", "b", "c");
List<String> reverseView = Lists.reverse(letters);
System.out.println(reverseView); // [c, b, a]
Unlike Collections.reverse
, this is purely a view... it doesn't alter the ordering of elements in the original list. Additionally, with an original list that is modifiable, changes to both the original list and the view are reflected in the other.
I was trying to replace a really large string and for some reason regular expressions were throwing some errors/exceptions.
So I found this alternative to regular expressions which also runs pretty fast. At least it was fast enough for me:
var search = "search string";
var replacement = "replacement string";
document.body.innerHTML = document.body.innerHTML.split(search).join(replacement)
src: How to replace all occurrences of a string in JavaScript?
You can also click on the Formulas tab in Excel and select Show Formulas, then use the regular "Find" and "Replace" function. This should not affect the rest of your formula.
IN WORDPRESS:
global $wpdb; $table_name=$wpdb->prefix.'posts';
foreach ( $wpdb->get_col( "DESC " . $table_name, 0 ) as $column_name ) {
var_dump( $column_name );
}
This can also be achieved using the Lambda based approach of Linq;
var list = ctn.Items
.Where(t=> t.DeliverySelection == true && t.Delivery.SentForDelivery == null)
.OrderBy(t => t.Delivery.SubmissionDate)
.Take(5);
Why do you need to attach it to the HTML? Just bind the function with hover
$("div.system_box").hover(function(){ mousin },
function() { mouseout });
If you do insist to have JS references inside the html, which is usualy a bad idea you can use:
onmouseover="yourJavaScriptCode()"
<div class="system_box" data-target="sms_box">
...
$("div.system_box").click(function(){ slideonlyone($(this).attr("data-target")); });
Simple Html 'required' tag is useful.
<form>
<input type="text" name="test" id="test" required>
<input type="submit" value="enter">
</form>
It specifies that an input field must be filled out before submitting the form or press the button submit. Here is example
Using control-z suspends the process (see the output from stty -a
which lists the key stroke under susp
). That leaves it running, but in suspended animation (so it is not using any CPU resources). It can be resumed later.
If you want to stop a program permanently, then any of interrupt (often control-c) or quit (often control-\) will stop the process, the latter producing a core dump (unless you've disabled them). You might also use a HUP or TERM signal (or, if really necessary, the KILL signal, but try the other signals first) sent to the process from another terminal; or you could use control-z to suspend the process and then send the death threat from the current terminal, and then bring the (about to die) process back into the foreground (fg
).
Note that all key combinations are subject to change via the stty
command or equivalents; the defaults may vary from system to system.
It turns out that the cause was that this project wasn't being considered by Eclipse to actually be a Java EE project at all; it was an old project from 3.1, and the Eclipse 3.5 we are using now requires several "natures" to be set in the project configuration file.
<natures>
<nature>org.eclipse.jdt.core.javanature</nature>
<nature>InCode.inCodeNature</nature>
<nature>org.eclipse.dltk.javascript.core.nature</nature>
<nature>net.sf.eclipsecs.core.CheckstyleNature</nature>
<nature>org.eclipse.wst.jsdt.core.jsNature</nature>
<nature>org.eclipse.wst.common.project.facet.core.nature</nature>
<nature>org.eclipse.wst.common.modulecore.ModuleCoreNature</nature>
<nature>org.eclipse.jem.workbench.JavaEMFNature</nature>
</natures>
I was able to find the cause by creating a new "Dynamic Web Project" which properly read its JSP files, and diffing against the config of the older project.
The only way I could find to add these was by editing the .project file, but after re-opening the project, everything magically worked. The settings referenced by pribeiro, above, weren't necessary since the project already conformed to the default settings.
Both pribeiro and nitind's answers gave me ideas to jumpstart my search, thanks.
Is there a way of editing these "natures" from within the UI?
Sadly, they want us to use a tag to let their browser know what to do. Look at this documentation, it tell us to use:
<meta http-equiv="X-UA-Compatible" content="IE=edge" >
and it should do.
It's not valid XHTML to have to have nested forms. However, you can use multiple submit buttons and use a serverside script to run different codes depending on which button the users has clicked.
You likely need to re-start VNC on both ends. i.e. when you say "restarted VNC", you probably just mean the client. But what about the other end? You likely need to re-start that end too. The root cause is likely a conflict. Many apps spy on the clipboard when they shouldn't. And many apps are not forgiving when they go to open the clipboard and can't. Robust ones will retry, others will simply not anticipate a failure and then they get fouled up and need to be restarted. Could be VNC, or it could be another app that's "listening" to the clipboard viewer chain, where it is obligated to pass along notifications to the other apps in the chain. If the notifications aren't sent, then VNC may not even know that there has been a clipboard update.
I use
ps -C "keyword" -o pid=
This command should give you a PID number.
You can use the below code for it.
[[UIApplication sharedApplication]openURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]];
You might need to convert the decimal
to money
(or decimal(8,2)
) to get that exact formatting. The convert
method can take a third parameter that controls the formatting style:
convert(varchar, cast(price as money)) 12345.67
convert(varchar, cast(price as money), 0) 12345.67
convert(varchar, cast(price as money), 1) 12,345.67
Found a good post on this and thought I'd share. Check it out HERE
Basically.
You can create the following class and IComparer Classes
public class Widget {
public string Name = string.Empty;
public int Size = 0;
public Widget(string name, int size) {
this.Name = name;
this.Size = size;
}
}
public class WidgetNameSorter : IComparer<Widget> {
public int Compare(Widget x, Widget y) {
return x.Name.CompareTo(y.Name);
}
}
public class WidgetSizeSorter : IComparer<Widget> {
public int Compare(Widget x, Widget y) {
return x.Size.CompareTo(y.Size);
}
}
Then If you have an IList, you can sort it like this.
List<Widget> widgets = new List<Widget>();
widgets.Add(new Widget("Zeta", 6));
widgets.Add(new Widget("Beta", 3));
widgets.Add(new Widget("Alpha", 9));
widgets.Sort(new WidgetNameSorter());
widgets.Sort(new WidgetSizeSorter());
But Checkout this site for more information... Check it out HERE
Check out in here, worked well for me, with no limits in the output size, no omitted elements, even beyond 1000
Move points into test:
def test():
points = 0
addpoint = raw_input ("type ""add"" to add a point")
...
or use global statement, but it is bad practice. But better way it move points to parameters:
def test(points=0):
addpoint = raw_input ("type ""add"" to add a point")
...
You cannot use ++
on something which is not a variable, this would be the closest you can get:
$('#counter').html(function(i, val) { return +val+1 });
jQuery's html()
method can get and set the HTML value of an element. If passed a function it can update the HTML based upon the existing value. So in the context of your code:
$("#update").click(function() {
$('#counter').html(function(i, val) { return +val+1 });
}
DEMO: http://jsfiddle.net/marcuswhybrow/zRX2D/2/
When it comes to synchronising your counter on the page, with the counter value in your database, never trust the client! You send either an increment or decrement signal to you server side script, rather than a continuous value such as 10, or 23.
However you could send an AJAX request to the server when you change the HTML of your counter:
$("#update").click(function() {
$('#counter').html(function(i, val) {
$.ajax({
url: '/path/to/script/',
type: 'POST',
data: {increment: true},
success: function() { alert('Request has returned') }
});
return +val+1;
});
}
This answer was last revised for Swift 5.2 and iOS 13.4 SDK.
It's all a matter of new syntax and slightly revised APIs. The underlying functionality of UIKit hasn't changed. This is true for a vast majority of iOS SDK frameworks.
let storyboard = UIStoryboard(name: "myStoryboardName", bundle: nil)
let vc = storyboard.instantiateViewController(withIdentifier: "myVCID")
self.present(vc, animated: true)
If you're having problems with init(coder:)
, please refer to EridB's answer.
Two things. First I don't think you are adding the data that you want to pass to the fragment correctly. What you need to pass to the fragment is a bundle, not an intent. For example if I wanted send an int
value to a fragment I would create a bundle, put the int
into that bundle, and then set that bundle as an argument to be used when the fragment was created.
Bundle bundle = new Bundle();
bundle.putInt(key, value);
fragment.setArguments(bundle);
Second to retrieve that information you need to get the arguments sent to the fragment. You then extract the value based on the key you identified it with. For example in your fragment:
Bundle bundle = this.getArguments();
if (bundle != null) {
int i = bundle.getInt(key, defaulValue);
}
What you are getting changes depending on what you put. Also the default value is usually null
but does not need to be. It depends on if you set a default value for that argument.
Lastly I do not think you can do this in onCreateView
. I think you must retrieve this data within your fragment's onActivityCreated
method. My reasoning is as follows. onActivityCreated
runs after the underlying activity has finished its own onCreate
method. If you are placing the information you wish to retrieve within the bundle durring your activity's onCreate
method, it will not exist during your fragment's onCreateView
. Try using this in onActivityCreated
and just update your ListView
contents later.
Just add !important tag to all css elements in Paolo's answer! Works fine for me JQM+phonegap
EXAMPLE:
body {
background: url(../images/background.jpg) !important;
You can just use the method uniq
. Assuming your array is ary
, call:
ary.uniq{|x| x.user_id}
and this will return a set with unique user_id
s.
You can use this javascript
function to check users' OS simply
function getOS() {
var userAgent = window.navigator.userAgent,
platform = window.navigator.platform,
macosPlatforms = ['Macintosh', 'MacIntel', 'MacPPC', 'Mac68K'],
windowsPlatforms = ['Win32', 'Win64', 'Windows', 'WinCE'],
iosPlatforms = ['iPhone', 'iPad', 'iPod'],
os = null;
if (macosPlatforms.indexOf(platform) !== -1) {
os = 'Mac OS';
} else if (iosPlatforms.indexOf(platform) !== -1) {
os = 'iOS';
} else if (windowsPlatforms.indexOf(platform) !== -1) {
os = 'Windows';
} else if (/Android/.test(userAgent)) {
os = 'Android';
} else if (!os && /Linux/.test(platform)) {
os = 'Linux';
}
return os;
}
alert(getOS());
You should be using @RequestParam
instead of @ModelAttribute
, e.g.
@RequestMapping("/{someID}")
public @ResponseBody int getAttr(@PathVariable(value="someID") String id,
@RequestParam String someAttr) {
}
You can even omit @RequestParam
altogether if you choose, and Spring will assume that's what it is:
@RequestMapping("/{someID}")
public @ResponseBody int getAttr(@PathVariable(value="someID") String id,
String someAttr) {
}
If the table has already been created:
First do:
ALTER TABLE `table1_name` ADD UNIQUE( `column_name`);
Then:
ALTER TABLE `table1_name` ADD FOREIGN KEY (`column_name`) REFERENCES `table2_name`(`column_name`);
You can use .loc
to select the specific columns with all rows and then pull that. An example is below:
pandas.merge(dataframe1, dataframe2.iloc[:, [0:5]], how='left', on='key')
In this example, you are merging dataframe1 and dataframe2. You have chosen to do an outer left join on 'key'. However, for dataframe2 you have specified .iloc
which allows you to specific the rows and columns you want in a numerical format. Using :
, your selecting all rows, but [0:5]
selects the first 5 columns. You could use .loc
to specify by name, but if your dealing with long column names, then .iloc
may be better.
Try this
$('.slidingDiv').toggle("slide", {direction: "right" }, 1000);
If you are logged in from the console, this will do the job in the latest heroku toolbelt,
heroku pg:reset --confirm database-name
In PowerShell you can use the command Set-Service:
Set-Service -Name Winmgmt -StartupType Manual
I haven't found a PowerShell command to view the startup type though. One would assume that the command Get-Service would provide that, but it doesn't seem to.
For SQL Management studio I used a variation of BWS' answer. This gets the data to the right of '=', or NULL if the symbol doesn't exist:
CASE WHEN (RIGHT(supplier_reference, CASE WHEN (CHARINDEX('=',supplier_reference,0)) = 0 THEN
0 ELSE CHARINDEX('=', supplier_reference) -1 END)) <> '' THEN (RIGHT(supplier_reference, CASE WHEN (CHARINDEX('=',supplier_reference,0)) = 0 THEN
0 ELSE CHARINDEX('=', supplier_reference) -1 END)) ELSE NULL END
Assuming my-app is a subdirectory under the current directory. The $LASTEXITCODE should be there from the last command:
.\my-app\my-fle.bat
If it was from a fileshare:
\\server\my-file.bat
A super quick and handy fix is to abuse Visual Studio's incredible intellisense by temporarily referencing the class somewhere.
Example:
System.Runtime.CompilerServices.ExtensionAttribute x = null;
When building or hovering the cursor over the line you can view the following error:
'System.Runtime.CompilerServices.ExtensionAttribute' exists in both 'C:\Program Files\Reference Assemblies\Microsoft\Framework\v3.5\System.Core.dll'
This tells you the two sources causing the conflict immediately.
System.Core.dll
is the .dll file that you want to keep, so delete the other one.
I found mine sitting in the bin
directory, but it may be elsewhere in the project.
As a matter of fact this is worth bearing in mind, because since the bin
directory might not be included as part of the TFS change-set, it can explain why checking in your changes doesn't resolve the issue for other members of your team.
Here is an example of how to achieve what you need:
<canvas id="myCanvas" width="578" height="200"></canvas>
<script>
var canvas = document.getElementById('myCanvas');
var context = canvas.getContext('2d');
// begin custom shape
context.beginPath();
context.moveTo(170, 80);
context.bezierCurveTo(130, 100, 130, 150, 230, 150);
context.bezierCurveTo(250, 180, 320, 180, 340, 150);
context.bezierCurveTo(420, 150, 420, 120, 390, 100);
context.bezierCurveTo(430, 40, 370, 30, 340, 50);
context.bezierCurveTo(320, 5, 250, 20, 250, 50);
context.bezierCurveTo(200, 5, 150, 20, 170, 80);
// complete custom shape
context.closePath();
context.lineWidth = 5;
context.fillStyle = '#8ED6FF';
context.fill();
context.strokeStyle = 'blue';
context.stroke();
</script>
_x000D_
Convert canvas image to URL format (base64)
var dataURL = canvas.toDataURL();
Send it to your server via Ajax
$.ajax({
type: "POST",
url: "script.php",
data: {
imgBase64: dataURL
}
}).done(function(o) {
console.log('saved');
// If you want the file to be visible in the browser
// - please modify the callback in javascript. All you
// need is to return the url to the file, you just saved
// and than put the image in your browser.
});
_x000D_
You can try this as well, it is easy to implement
TimeZone time2 = TimeZone.CurrentTimeZone;
DateTime test = time2.ToUniversalTime(DateTime.Now);
var singapore = TimeZoneInfo.FindSystemTimeZoneById("Singapore Standard Time");
var singaporetime = TimeZoneInfo.ConvertTimeFromUtc(test, singapore);
Change the text to which standard time you want to change.
Use TimeZone
feature of C# to implement.
All you have to do it insert you exact db details and restart your mysql server
Regarding the error
'CREATE VIEW' must be the first statement in a query batch.
Microsoft SQL Server has a quirky reqirement that CREATE VIEW
be the only statement in a batch. This is also true of a few other statements, such as CREATE FUNCTION
. It is not true of CREATE TABLE
, so go figure …
The solution is to send your script to the server in small batches. One way to do this is to select a single statement and execute it. This is clearly inconvenient.
The more convenient solution is to get the client to send the script in small isolated batches.
The GO
keyword is not strictly an SQL command, which is why you can’t end it with a semicolon like real SQL commands. Instead it is an instruction to the client to break the script at this point and to send the portion as a batch.
As a result, you end up writing something like:
DROP VIEW IF EXISTS … ;
GO
CREATE VIEW … AS … ;
GO
None of the other database servers I have encountered (PostgreSQL, MySQL, Oracle, SQLite) have this quirk, so the requirement appears to be Microsoft Only.
You may want to do this all the time by default. I've been struggling to wrap the jquery function or jquery.fn.init method to do this without error, but you can make a simple change to the jquery source to do this. Included are some surrounding lines you can search for. I recommend searching jquery source for The jQuery object is actually just the init constructor 'enhanced'
var
version = "3.3.1",
// Define a local copy of jQuery
jQuery = function( selector, context ) {
// The jQuery object is actually just the init constructor 'enhanced'
// Need init if jQuery is called (just allow error to be thrown if not included)
var result = new jQuery.fn.init( selector, context );
if ( result.length === 0 ) {
if (window.console && console.warn && context !== 'failsafe') {
if (selector != null) {
console.warn(
new Error('$(\''+selector+'\') selected nothing. Do $(sel, "failsafe") to silence warning. Context:'+context)
);
}
}
}
return result;
},
// Support: Android <=4.0 only
// Make sure we trim BOM and NBSP
rtrim = /^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g;
jQuery.fn = jQuery.prototype = {
Last but not least, you can get the uncompressed jquery source code here: http://code.jquery.com/
just enter this line in the command line :
set RANDFILE=.rnd
Try this:
public void paint (Graphics g) {
Rectangle r = new Rectangle(xPos,yPos,width,height);
g.fillRect(r.getX(), r.getY(), r.getWidth(), r.getHeight());
}
[edit]
// With explicit casting
public void paint (Graphics g) {
Rectangle r = new Rectangle(xPos, yPos, width, height);
g.fillRect(
(int)r.getX(),
(int)r.getY(),
(int)r.getWidth(),
(int)r.getHeight()
);
}
If you already have node installed, your path variable is set up and you suddenly start getting this error; try updating to the latest version.
This worked for me going from 6.9.2 to 6.10.
Depending on what exactly you need:
is null
checks whether the value is null
:
{% if var is null %}
{# do something #}
{% endif %}
is defined
checks whether the variable is defined:
{% if var is not defined %}
{# do something #}
{% endif %}
Additionally the is sameas
test, which does a type strict comparison of two values, might be of interest for checking values other than null
(like false
):
{% if var is sameas(false) %}
{# do something %}
{% endif %}
You need to use the target
selector.
Here is a fiddle with another example: http://jsfiddle.net/YYPKM/3/
Or try this
const https = require('https');
const fs = require('fs');
const DOMAIN = 'raw.githubusercontent.com';
function writeFile(data, fileName) {
fs.appendFile(fileName, data.toString(), err => {
if (err) {
console.log('error in writing file', err);
}
});
}
function EOF(data) {
console.log('EOF');
}
function getFileName(pathToFile) {
var result = pathToFile.split('/');
var splitLength = result.length;
return result[splitLength - 1];
}
function getFile(branchName, username, repoName, ...pathToFile) {
pathToFile.forEach(item => {
const path = `/${username}/${repoName}/${branchName}/${item}`;
const URL = `${DOMAIN}${path}`;
const options = {
hostname: DOMAIN,
path: path
};
var fileName = getFileName(item);
https
.get(options, function(res) {
console.log(res.statusCode);
/* if file not found */
if (res.statusCode === 404) {
console.log('FILE NOT FOUND');
} else {
/* if file found */
res.on('data', data => writeFile(data, fileName));
res.on('end', data => EOF(data));
}
})
.on('error', function(res) {
console.log('error in reading URL');
});
});
}
getFile('master', 'bansalAyush', 'InstagramClone', '.babelrc', 'README.md');
I did it in this simple way, with Web API 2.0. You can remove UseDefaultCredentials. I used it for my own use cases.
List<YourObject> listObjects = new List<YourObject>();
string response = "";
using (var client = new WebClient() { UseDefaultCredentials = true })
{
response = client.DownloadString(apiUrl);
}
listObjects = JsonConvert.DeserializeObject<List<YourObject>>(response);
return listObjects;
This solved my issue straight away - mac Mojave 10.14.6 - PhpStorm.
Unhandled rejection Error: EACCES: permission denied, mkdir '/Users/myname/.npm/_cacache/index-v5/fb/5a'
sudo chown -R $USER:$GROUP ~/.npm
sudo chown -R $USER:$GROUP ~/.config
Original post: https://stackoverflow.com/a/50639828
Use is_null or ===
operator.
is_null($result['column'])
$result['column'] === NULL
encodeURIComponent works fine for me. we can give the url like this in ajax call.The code shown below:
$.ajax({
cache: false,
type: "POST",
url: "http://atandra.mivamerchantdev.com//mm5/json.mvc?Store_Code=ATA&Function=Module&Module_Code=thub_connector&Module_Function=THUB_Request",
data: "strChannelName=" + $('#txtupdstorename').val() + "&ServiceUrl=" + encodeURIComponent($('#txtupdserviceurl').val()),
dataType: "HTML",
success: function (data) {
},
error: function (xhr, ajaxOptions, thrownError) {
}
});
Sounds like a good opportunity to use an AlertDialog.
As basic as it seems, Android does not have a built-in dialog to do this (as far as I know). Fortunately, it's just a little extra work on top of creating a standard AlertDialog. You simply need to create an EditText for the user to input data, and set it as the view of the AlertDialog. You can customize the type of input allowed using setInputType, if you need.
If you're able to use a member variable, you can simply set the variable to the value of the EditText, and it will persist after the dialog has dismissed. If you can't use a member variable, you may need to use a listener to send the string value to the right place. (I can edit and elaborate more if this is what you need).
Within your class:
private String m_Text = "";
Within the OnClickListener of your button (or in a function called from there):
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Title");
// Set up the input
final EditText input = new EditText(this);
// Specify the type of input expected; this, for example, sets the input as a password, and will mask the text
input.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD);
builder.setView(input);
// Set up the buttons
builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
m_Text = input.getText().toString();
}
});
builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
builder.show();