Here are the difference between POST, PUT and PATCH methods of a HTTP protocol.
POST
A HTTP.POST method always creates a new resource on the server. Its a non-idempotent request i.e. if user hits same requests 2 times it would create another new resource if there is no constraint.
http post method is like a INSERT query in SQL which always creates a new record in database.
Example: Use POST method to save new user, order etc where backend server decides the resource id for new resource.
PUT
In HTTP.PUT method the resource is first identified from the URL and if it exists then it is updated otherwise a new resource is created. When the target resource exists it overwrites that resource with a complete new body. That is HTTP.PUT method is used to CREATE or UPDATE a resource.
http put method is like a MERGE query in SQL which inserts or updates a record depending upon whether the given record exists.
PUT request is idempotent i.e. hitting the same requests twice would update the existing recording (No new record created). In PUT method the resource id is decided by the client and provided in the request url.
Example: Use PUT method to update existing user or order.
PATCH
A HTTP.PATCH method is used for partial modifications to a resource i.e. delta updates.
http patch method is like a UPDATE query in SQL which sets or updates selected columns only and not the whole row.
Example: You could use PATCH method to update order status.
PATCH /api/users/40450236/order/10234557
Request Body: {status: 'Delivered'}
Below is one of the way by which you can achieve that, may not be an ideal way to do.
Have one method accepting both types of request, then check what type of request you received, is it of type "GET" or "POST", once you come to know that, do respective actions and the call one method which does common task for both request Methods ie GET and POST.
@RequestMapping(value = "/books")
public ModelAndView listBooks(HttpServletRequest request){
//handle both get and post request here
// first check request type and do respective actions needed for get and post.
if(GET REQUEST){
//WORK RELATED TO GET
}else if(POST REQUEST){
//WORK RELATED TO POST
}
commonMethod(param1, param2....);
}
In my case, IIS was fine but.. uh.. all the files in the folder except web.config had been deleted (a manual deployment half-done on a test site).
Add this toolbar.getBackground().setAlpha(0);
to inside OnCreate method. The add this:
android:elevation="0dp" android:background="@android:color/transparent
to your toolbar xml file.
When an unauthorized request comes in, the entire request is URL encoded, and added as a query string to the request to the authorization form, so I can see where this may result in a problem given your situation.
According to MSDN, the correct element to modify to reset maxQueryStringLength in web.config is the <httpRuntime>
element inside the <system.web>
element, see httpRuntime Element (ASP.NET Settings Schema). Try modifying that element.
This will do the trick!
div {
height: 100vh;
width: 100vw;
}
The essential idea here is to select the data you want to sum, and then sum them. This selection of data can be done in several different ways, a few of which are shown below.
Arguably the most common way to select the values is to use Boolean indexing.
With this method, you find out where column 'a' is equal to 1
and then sum the corresponding rows of column 'b'. You can use loc
to handle the indexing of rows and columns:
>>> df.loc[df['a'] == 1, 'b'].sum()
15
The Boolean indexing can be extended to other columns. For example if df
also contained a column 'c' and we wanted to sum the rows in 'b' where 'a' was 1 and 'c' was 2, we'd write:
df.loc[(df['a'] == 1) & (df['c'] == 2), 'b'].sum()
Another way to select the data is to use query
to filter the rows you're interested in, select column 'b' and then sum:
>>> df.query("a == 1")['b'].sum()
15
Again, the method can be extended to make more complicated selections of the data:
df.query("a == 1 and c == 2")['b'].sum()
Note this is a little more concise than the Boolean indexing approach.
The alternative approach is to use groupby
to split the DataFrame into parts according to the value in column 'a'. You can then sum each part and pull out the value that the 1s added up to:
>>> df.groupby('a')['b'].sum()[1]
15
This approach is likely to be slower than using Boolean indexing, but it is useful if you want check the sums for other values in column a
:
>>> df.groupby('a')['b'].sum()
a
1 15
2 8
Works fine for check if an input is a positive Integer AND in a specific range
def checkIntValue():
'''Works fine for check if an **input** is
a positive Integer AND in a specific range'''
maxValue = 20
while True:
try:
intTarget = int(input('Your number ?'))
except ValueError:
continue
else:
if intTarget < 1 or intTarget > maxValue:
continue
else:
return (intTarget)
I agree with kazanaki's answer, and it helped me. I wanted to select the whole entity, so I used
select DISTINCT(c) from Customer c
In my case I have many-to-many relationship, and I want to load entities with collections in one query.
I used LEFT JOIN FETCH and at the end I had to make the result distinct.
In SQL Server you can do this:
SELECT *
FROM (
SELECT ROW_NUMBER()
OVER(PARTITION BY customer
ORDER BY total DESC) AS StRank, *
FROM Purchases) n
WHERE StRank = 1
Explaination:Here Group by is done on the basis of customer and then order it by total then each such group is given serial number as StRank and we are taking out first 1 customer whose StRank is 1
CSS3 can solve this problem. Unfortunately it's only supported on 60% of used browsers nowadays.
For IE and iOS you can't turn off resizing but you can limit the textarea
dimension by setting its width
and height
.
/* One can also turn on/off specific axis. Defaults to both on. */
textarea { resize:vertical; } /* none|horizontal|vertical|both */
I faced this issue because my selector was depend on id
meanwhile I did not set id for my element
my selector
was
$("#EmployeeName")
but my HTML element
<input type="text" name="EmployeeName">
so just make sure that your selector criteria are valid
If you want to use your dataframe object only once, use:
df['BoolCol'].loc[lambda x: x==True].index
If you have to log all args or your method have one argument, you can simply use getArgs like described in previous answers.
If you have to log a specific arg, you can annoted it and then recover its value like this :
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.PARAMETER)
public @interface Data {
String methodName() default "";
}
@Aspect
public class YourAspect {
@Around("...")
public Object around(ProceedingJoinPoint point) throws Throwable {
Method method = MethodSignature.class.cast(point.getSignature()).getMethod();
Object[] args = point.getArgs();
StringBuilder data = new StringBuilder();
Annotation[][] parameterAnnotations = method.getParameterAnnotations();
for (int argIndex = 0; argIndex < args.length; argIndex++) {
for (Annotation paramAnnotation : parameterAnnotations[argIndex]) {
if (!(paramAnnotation instanceof Data)) {
continue;
}
Data dataAnnotation = (Data) paramAnnotation;
if (dataAnnotation.methodName().length() > 0) {
Object obj = args[argIndex];
Method dataMethod = obj.getClass().getMethod(dataAnnotation.methodName());
data.append(dataMethod.invoke(obj));
continue;
}
data.append(args[argIndex]);
}
}
}
}
Examples of use :
public void doSomething(String someValue, @Data String someData, String otherValue) {
// Apsect will log value of someData param
}
public void doSomething(String someValue, @Data(methodName = "id") SomeObject someData, String otherValue) {
// Apsect will log returned value of someData.id() method
}
You are calling setProperty
instead of setParameter
. Change your code to
Query q = em.createNativeQuery("SELECT count(*) FROM mytable where username = :username");
em.setParameter("username", "test");
(int) q.getSingleResult();
and it should work.
React uses SyntheticKeyboardEvent to wrap native browser event and this Synthetic event provides named key attribute,
which you can use like this:
handleOnKeyDown = (e) => {
if (['Enter', 'ArrowRight', 'Tab'].includes(e.key)) {
// select item
e.preventDefault();
} else if (e.key === 'ArrowUp') {
// go to top item
e.preventDefault();
} else if (e.key === 'ArrowDown') {
// go to bottom item
e.preventDefault();
} else if (e.key === 'Escape') {
// escape
e.preventDefault();
}
};
Comment from answer: "make sure you use the same open connection for all the database calls inside the transaction. – Magnus"
Our users are stored in a separate db from the data I was working with in the transactions. Opening the db connection to get the user was causing this error for me. Moving the other db connection and user lookup outside of the transaction scope fixed the error.
Thank you Phil for your solution; in case someone ever gets in the same situation as me, here is a (more complex) variant:
---
# this is just to avoid a call to |default on each iteration
- set_fact:
postconf_d: {}
- name: 'get postfix default configuration'
command: 'postconf -d'
register: command
# the answer of the command give a list of lines such as:
# "key = value" or "key =" when the value is null
- name: 'set postfix default configuration as fact'
set_fact:
postconf_d: >
{{
postconf_d |
combine(
dict([ item.partition('=')[::2]|map('trim') ])
)
with_items: command.stdout_lines
This will give the following output (stripped for the example):
"postconf_d": {
"alias_database": "hash:/etc/aliases",
"alias_maps": "hash:/etc/aliases, nis:mail.aliases",
"allow_min_user": "no",
"allow_percent_hack": "yes"
}
Going even further, parse the lists in the 'value':
- name: 'set postfix default configuration as fact'
set_fact:
postconf_d: >-
{% set key, val = item.partition('=')[::2]|map('trim') -%}
{% if ',' in val -%}
{% set val = val.split(',')|map('trim')|list -%}
{% endif -%}
{{ postfix_default_main_cf | combine({key: val}) }}
with_items: command.stdout_lines
...
"postconf_d": {
"alias_database": "hash:/etc/aliases",
"alias_maps": [
"hash:/etc/aliases",
"nis:mail.aliases"
],
"allow_min_user": "no",
"allow_percent_hack": "yes"
}
A few things to notice:
in this case it's needed to "trim" everything (using the >-
in YAML and -%}
in Jinja), otherwise you'll get an error like:
FAILED! => {"failed": true, "msg": "|combine expects dictionaries, got u\" {u'...
obviously the {% if ..
is far from bullet-proof
in the postfix case, val.split(',')|map('trim')|list
could have been simplified to val.split(', ')
, but I wanted to point out the fact you will need to |list
otherwise you'll get an error like:
"|combine expects dictionaries, got u\"{u'...': <generator object do_map at ...
Hope this can help.
public static void main(String[] args) {
public String[] name = {"Art", "Dan", "Jen"};
public String[] country = {"Canada", "Germant", "USA"};
// initialize your performance array here too.
//Your constructor takes arrays as an argument so you need to be sure to pass in the arrays and not just objects.
Athlete art = new Athlete(name, country, performance);
}
what worked for on Ubuntu is granting all privileges to the user:
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'yourpassword' WITH GRANT OPTION;
and setting the bind address in /etc/mysql/mysql.conf.d/mysqld.cnf
:
bind-address = 0.0.0.0
then restarting the mysql daemon:
service mysql restart
Cool.
I also found the documentation regarding the E:
http://www.postgresql.org/docs/8.3/interactive/sql-syntax-lexical.html#SQL-SYNTAX-STRINGS
PostgreSQL also accepts "escape" string constants, which are an extension to the SQL standard. An escape string constant is specified by writing the letter E (upper or lower case) just before the opening single quote, e.g. E'foo'. (When continuing an escape string constant across lines, write E only before the first opening quote.) Within an escape string, a backslash character (\) begins a C-like backslash escape sequence, in which the combination of backslash and following character(s) represents a special byte value. \b is a backspace, \f is a form feed, \n is a newline, \r is a carriage return, \t is a tab. Also supported are \digits, where digits represents an octal byte value, and \xhexdigits, where hexdigits represents a hexadecimal byte value. (It is your responsibility that the byte sequences you create are valid characters in the server character set encoding.) Any other character following a backslash is taken literally. Thus, to include a backslash character, write two backslashes (\\). Also, a single quote can be included in an escape string by writing \', in addition to the normal way of ''.
See some example in http://www.sitepoint.com/understanding-sql-joins-mysql-database/
You can use 'USING' instead of 'ON' as in the query
SELECT * FROM table1 LEFT JOIN table2 USING (id);
They are user-defined signals, so they aren't triggered by any particular action. You can explicitly send them programmatically:
#include <signal.h>
kill(pid, SIGUSR1);
where pid
is the process id of the receiving process. At the receiving end, you can register a signal handler for them:
#include <signal.h>
void my_handler(int signum)
{
if (signum == SIGUSR1)
{
printf("Received SIGUSR1!\n");
}
}
signal(SIGUSR1, my_handler);
I had the problem under Linux and I needed to install those. I don't know which one actually fixed the problem, but that error was gone after that:
apt-get install mono-utils mono-runtime-sgen mono-runtime-common \
mono-runtime-boehm mono-runtime-dbg mono-xbuild
I had my own instance of this error, and in my case none of the above solutions resolved the "cannot be resolved to a type" error by themselves, although they were necessary steps toward doing so. I found something silly that did though.
This seemed to be due a bug in Eclipse (Luna Service Release 1a (4.4.1) in my case). In the file where you're seeing the error, try saving after making and then undoing a trivial change (e.g. deleting one character and then typing it back in). For some reason this caused all my class references to resolve.
I'm not sure if you love it but I use Ctrl+A (to go beginning the line) and Ctrl+K (to delete the line) I was familiar with these commands from emacs, and figured out them accidently.
I followed the above very carefully and still couldn't get the initial value selected.
The reason was that although my bound value was defined as a string in typescript, my backend API was returning a number.
Javascript loose typing simply changed the type at runtime (without error), which prevented selection the of the initial value.
Component
myBoundValue: string;
Template
<mat-select [(ngModel)]="myBoundValue">
Solution was to update the API to return a string value.
You can use simple jQuery jPut plugin
http://plugins.jquery.com/jput/
<script>
$(document).ready(function(){
var json = [{"name": "name1","email":"[email protected]"},{"name": "name2","link":"[email protected]"}];
//while running this code the template will be appended in your div with json data
$("#tbody").jPut({
jsonData:json,
//ajax_url:"youfile.json", if you want to call from a json file
name:"tbody_template",
});
});
</script>
<table jput="t_template">
<tbody jput="tbody_template">
<tr>
<td>{{name}}</td>
<td>{{email}}</td>
</tr>
</tbody>
</table>
<table>
<tbody id="tbody">
</tbody>
</table>
Use a RotateAnimation
, setting the pivot point to the centre of your image.
RotateAnimation anim = new RotateAnimation(0f, 350f, 15f, 15f);
anim.setInterpolator(new LinearInterpolator());
anim.setRepeatCount(Animation.INFINITE);
anim.setDuration(700);
// Start animating the image
final ImageView splash = (ImageView) findViewById(R.id.splash);
splash.startAnimation(anim);
// Later.. stop the animation
splash.setAnimation(null);
A typical custom exception I'd define is something like this:
public class CustomException extends Exception {
public CustomException(String message) {
super(message);
}
public CustomException(String message, Throwable throwable) {
super(message, throwable);
}
}
I even create a template using Eclipse so I don't have to write all the stuff over and over again.
a tiny improvement for the answer from interjay, to make the result as a flatten list.
>>> list3 = [zip(x,list2) for x in itertools.permutations(list1,len(list2))]
>>> import itertools
>>> chain = itertools.chain(*list3)
>>> list4 = list(chain)
[('a', 1), ('b', 2), ('a', 1), ('c', 2), ('b', 1), ('a', 2), ('b', 1), ('c', 2), ('c', 1), ('a', 2), ('c', 1), ('b', 2)]
reference from this link
You are getting that error because an application with a package name same as your application already exists. If you are sure that you have not installed the same application before, change the package name and try.
Else wise, here is what you can do:
Check wifi type in connectivity manager:
//check network connection
ConnectivityManager cm = (ConnectivityManager) this.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
boolean hasNetworkConnection = activeNetwork != null && activeNetwork.isConnectedOrConnecting();
System.out.println("Connection ? : " + hasNetworkConnection);
//check wifi
boolean hasWifiConnection = activeNetwork.getType() == ConnectivityManager.TYPE_WIFI;
System.out.println("Wifi ? : " + hasWifiConnection);
Android Documentation describes 'TYPE_WIFI' as 'A WIFI data connection. Devices may support more than one.'
While I would have gone with Piotr's answer (because it's all in one line), I was surprised that your sample is closer to your solution than you think. From what you have, you simply assign the model value before you use the Html helper method.
@{Model.RequiredProperty = "default";}
@Html.HiddenFor(model => model.RequiredProperty)
Add "babel-preset-react"
npm install babel-preset-react
and add "presets" option to babel-loader in your webpack.config.js
(or you can add it to your .babelrc or package.js: http://babeljs.io/docs/usage/babelrc/)
Here is an example webpack.config.js:
{
test: /\.jsx?$/, // Match both .js and .jsx files
exclude: /node_modules/,
loader: "babel",
query:
{
presets:['react']
}
}
Recently Babel 6 was released and there was a major change: https://babeljs.io/blog/2015/10/29/6.0.0
If you are using react 0.14, you should use ReactDOM.render()
(from require('react-dom')
) instead of React.render()
: https://facebook.github.io/react/blog/#changelog
UPDATE 2018
Rule.query has already been deprecated in favour of Rule.options. Usage in webpack 4 is as follows:
npm install babel-loader babel-preset-react
Then in your webpack configuration (as an entry in the module.rules array in the module.exports object)
{
test: /\.jsx?$/,
exclude: /node_modules/,
use: [
{
loader: 'babel-loader',
options: {
presets: ['react']
}
}
],
}
Interactively, you can display it with
help(my_func)
Or from code you can retrieve it with
my_func.__doc__
In C++ you can declare a string like this:
#include <string>
using namespace std;
int main()
{
string str1("argue2000"); //define a string and Initialize str1 with "argue2000"
string str2 = "argue2000"; // define a string and assign str2 with "argue2000"
string str3; //just declare a string, it has no value
return 1;
}
In addition to @Boaz's and @vegemite4me's answers....
By implementing ImplicitNamingStrategy
you may create rules for automatically naming the constraints. Note you add your naming strategy to the metadataBuilder
during Hibernate's initialization:
metadataBuilder.applyImplicitNamingStrategy(new MyImplicitNamingStrategy());
It works for @UniqueConstraint
, but not for @Column(unique = true)
, which always generates a random name (e.g. UK_3u5h7y36qqa13y3mauc5xxayq).
There is a bug report to solve this issue, so if you can, please vote there to have this implemented. Here: https://hibernate.atlassian.net/browse/HHH-11586
Thanks.
Check out perlfaq4: How do I merge two hashes. There is a lot of good information already in the Perl documentation and you can have it right away rather than waiting for someone else to answer it. :)
Before you decide to merge two hashes, you have to decide what to do if both hashes contain keys that are the same and if you want to leave the original hashes as they were.
If you want to preserve the original hashes, copy one hash (%hash1) to a new hash (%new_hash), then add the keys from the other hash (%hash2 to the new hash. Checking that the key already exists in %new_hash gives you a chance to decide what to do with the duplicates:
my %new_hash = %hash1; # make a copy; leave %hash1 alone
foreach my $key2 ( keys %hash2 )
{
if( exists $new_hash{$key2} )
{
warn "Key [$key2] is in both hashes!";
# handle the duplicate (perhaps only warning)
...
next;
}
else
{
$new_hash{$key2} = $hash2{$key2};
}
}
If you don't want to create a new hash, you can still use this looping technique; just change the %new_hash to %hash1.
foreach my $key2 ( keys %hash2 )
{
if( exists $hash1{$key2} )
{
warn "Key [$key2] is in both hashes!";
# handle the duplicate (perhaps only warning)
...
next;
}
else
{
$hash1{$key2} = $hash2{$key2};
}
}
If you don't care that one hash overwrites keys and values from the other, you could just use a hash slice to add one hash to another. In this case, values from %hash2 replace values from %hash1 when they have keys in common:
@hash1{ keys %hash2 } = values %hash2;
Using an escaped string (a.k.a. escaped value):
width: ~"calc(100% - 200px)";
Also, in case you need to mix Less math with escaped strings:
width: calc(~"100% - 15rem +" (10px+5px) ~"+ 2em");
Compiles to:
width: calc(100% - 15rem + 15px + 2em);
This works as Less concatenates values (the escaped strings and math result) with a space by default.
No, you can't use a non-standard size or dimension, as it'd wreak havoc on peoples' browsers wherever the icons are displayed. You could make it 12x16 (with four pixels of white/transparent padding on the 12 pixel side) to preserve your aspect ratio, but you can't go bigger (well, you can, but the browser'll shrink it).
u can use this :
@Override
public void afterTextChanged(Editable s) {
super.afterTextChanged(s);
if (s.length() == Bank.PAN_MINIMUM_RECOGNIZABLE_LENGTH + 10) {
Bank bank = BankUtil.findByPan(s.toString());
if (null != bank && mNewPanEntered && !mNameDefined) {
mNewPanEntered = false;
suggestCardName(bank);
}
private void suggestCardName(Bank bank) {
mLastSuggestTime = System.currentTimeMillis();
if (!bank.getName().trim().matches(getActivity().getString(R.string.bank_eghtesadnovin))) {
inputCardNumber.setError(R.string.balance_not_enmb, true);
}
}
From a Java Game Engine:
/**
* Converts a given Image into a BufferedImage
*
* @param img The Image to be converted
* @return The converted BufferedImage
*/
public static BufferedImage toBufferedImage(Image img)
{
if (img instanceof BufferedImage)
{
return (BufferedImage) img;
}
// Create a buffered image with transparency
BufferedImage bimage = new BufferedImage(img.getWidth(null), img.getHeight(null), BufferedImage.TYPE_INT_ARGB);
// Draw the image on to the buffered image
Graphics2D bGr = bimage.createGraphics();
bGr.drawImage(img, 0, 0, null);
bGr.dispose();
// Return the buffered image
return bimage;
}
Consistency is the key to any naming standard. As long as it's logical and consistent, you're 99% there.
The standard itself is very much personal preference - so if you like your standard, then run with it.
To answer your question outright - no, MySQL doesn't have a preferred naming convention/standard, so rolling your own is fine (and yours seems logical).
I've written a jQuery plugin that incorporates the solutions discussed here with cross-browser support:
https://github.com/adjohnson916/jquery-methodOverride
Check it out!
One of the pitfalls as I know is IE problem with custom elements. As quoted from the docs:
3) you do not use custom element tags such as (use the attribute version instead)
4) if you do use custom element tags, then you must take these steps to make IE 8 and below happy
<!doctype html>
<html xmlns:ng="http://angularjs.org" id="ng-app" ng-app="optionalModuleName">
<head>
<!--[if lte IE 8]>
<script>
document.createElement('ng-include');
document.createElement('ng-pluralize');
document.createElement('ng-view');
// Optionally these for CSS
document.createElement('ng:include');
document.createElement('ng:pluralize');
document.createElement('ng:view');
</script>
<![endif]-->
</head>
<body>
...
</body>
</html>
Let's assume that you have 2 divs inside of your html file.
<div id="div1">some text</div>
<div id="div2">some other text</div>
The java program itself can't update the content of the html file because the html is related to the client, meanwhile java is related to the back-end.
You can, however, communicate between the server (the back-end) and the client.
What we're talking about is AJAX, which you achieve using JavaScript, I recommend using jQuery which is a common JavaScript library.
Let's assume you want to refresh the page every constant interval, then you can use the interval function to repeat the same action every x time.
setInterval(function()
{
alert("hi");
}, 30000);
You could also do it like this:
setTimeout(foo, 30000);
Whereea foo is a function.
Instead of the alert("hi") you can perform the AJAX request, which sends a request to the server and receives some information (for example the new text) which you can use to load into the div.
A classic AJAX looks like this:
var fetch = true;
var url = 'someurl.java';
$.ajax(
{
// Post the variable fetch to url.
type : 'post',
url : url,
dataType : 'json', // expected returned data format.
data :
{
'fetch' : fetch // You might want to indicate what you're requesting.
},
success : function(data)
{
// This happens AFTER the backend has returned an JSON array (or other object type)
var res1, res2;
for(var i = 0; i < data.length; i++)
{
// Parse through the JSON array which was returned.
// A proper error handling should be added here (check if
// everything went successful or not)
res1 = data[i].res1;
res2 = data[i].res2;
// Do something with the returned data
$('#div1').html(res1);
}
},
complete : function(data)
{
// do something, not critical.
}
});
Wherea the backend is able to receive POST'ed data and is able to return a data object of information, for example (and very preferrable) JSON, there are many tutorials out there with how to do so, GSON from Google is something that I used a while back, you could take a look into it.
I'm not professional with Java POST receiving and JSON returning of that sort so I'm not going to give you an example with that but I hope this is a decent start.
You have used regular expression for this format : DD - MM- YYYY
If you need this format DD/MM/YYYY use
var pattern =/^([0-9]{2})\/([0-9]{2})\/([0-9]{4})$/;
You can make use of regex's quantifier feature since lookaround
may not be supported all the time.
(\bjames\b){1,}.*(\bjack\b){1,}|(\bjack\b){1,}.*(\bjames\b){1,}
Since we know that i
is an int
, you can just go ahead and unsigneding it!
This would do the trick:
int i = -62;
unsigned int j = unsigned(i);
There are 2 ways of doing this
foreach($questions as $key => $question){
$questions[$key]['answers'] = $answers_model->get_answers_by_question_id($question['question_id']);
}
This way you save the key, so you can update it again in the main $questions
variable
or
foreach($questions as &$question){
Adding the &
will keep the $questions
updated. But I would say the first one is recommended even though this is shorter (see comment by Paystey)
Per the PHP foreach
documentation:
In order to be able to directly modify array elements within the loop precede $value with &. In that case the value will be assigned by reference.
I'm no expert, but I do believe that the null
equivalent for an int is 0
.
For example, if you make an int[]
, each slot contains 0
as opposed to null
, unless you set it to something else.
In some situations, this may be of use.
This Worked for me > In Eclipse NEON double clicked on Server tab which redirects server overview window
Here you can change port number based on your requirement for Tomcat Admin and HTTP port.
And restarted the server.
Hope this helps you.
<?php
$start = strtotime("12:00");
$end = // Run query to get datetime value from db
$elapsed = $end - $start;
echo date("H:i", $elapsed);
?>
None of these gave me a satisfactory answer so in the end I got what I wanted with the key
prop, useRef and some random id generator like shortid
.
Basically, I wanted some chat application to play itself out the first time someone opens the app. So, I needed full control over when and what the answers are updated with the ease of async await.
Example code:
function sleep(ms) {
return new Promise(resolve => setTimeout(resolve, ms));
}
// ... your JSX functional component, import shortid somewhere
const [render, rerender] = useState(shortid.generate())
const messageList = useRef([
new Message({id: 1, message: "Hi, let's get started!"})
])
useEffect(()=>{
await sleep(500)
messageList.current.push(new Message({id: 1, message: "What's your name?"}))
// ... more stuff
// now trigger the update
rerender(shortid.generate())
}, [])
// only the component with the right render key will update itself, the others will stay as is and won't rerender.
return <div key={render}>{messageList.current}</div>
In fact this also allowed me to roll something like a chat message with a rolling .
const waitChat = async (ms) => {
let text = "."
for (let i = 0; i < ms; i += 200) {
if (messageList.current[messageList.current.length - 1].id === 100) {
messageList.current = messageList.current.filter(({id}) => id !== 100)
}
messageList.current.push(new Message({
id: 100,
message: text
}))
if (text.length === 3) {
text = "."
} else {
text += "."
}
rerender(shortid.generate())
await sleep(200)
}
if (messageList.current[messageList.current.length - 1].id === 100) {
messageList.current = messageList.current.filter(({id}) => id !== 100)
}
}
Firstly, it's not clear what your date format is.
There already is an answer involving strftime("%s")
.
I like to expand on that answer.
SQLite has only the following storage classes: NULL, INTEGER, REAL, TEXT or BLOB. To simplify things, I'm going to assume dates are REAL containing the seconds since 1970-01-01. Here's a sample schema for which I will put in the sample data of "1st December 2018":
CREATE TABLE Payment (DateCreated REAL);
INSERT INTO Payment VALUES (strftime("%s", "2018-12-01"));
Now let's work out the date difference between "1st December 2018" and now (as I write this, it is midday 12th December 2018):
Date difference in days:
SELECT (strftime("%s", "now") - DateCreated) / 86400.0 FROM Payment;
-- Output: 11.066875
Date difference in hours:
SELECT (strftime("%s", "now") - DateCreated) / 3600.0 FROM Payment;
-- Output: 265.606388888889
Date difference in minutes:
SELECT (strftime("%s", "now") - DateCreated) / 60.0 FROM Payment;
-- Output: 15936.4833333333
Date difference in seconds:
SELECT (strftime("%s", "now") - DateCreated) FROM Payment;
-- Output: 956195.0
JObject obj = JObject.Parse(json);
var attributes = obj["parent"]["child"]...["your desired element"].ToList<JToken>();
foreach (JToken attribute in attributes)
{
JProperty jProperty = attribute.ToObject<JProperty>();
string propertyName = jProperty.Name;
}
This method orderBy
does not change the input array,
you have to assign the result to your array :
var chars = this.state.characters;
chars = _.orderBy(chars, ['name'],['asc']); // Use Lodash to sort array by 'name'
this.setState({characters: chars})
I was only interested for a trigger when a width of an element was changed (I don' care about height), so I created a jquery event that does exactly that, using an invisible iframe element.
$.event.special.widthChanged = {
remove: function() {
$(this).children('iframe.width-changed').remove();
},
add: function () {
var elm = $(this);
var iframe = elm.children('iframe.width-changed');
if (!iframe.length) {
iframe = $('<iframe/>').addClass('width-changed').prependTo(this);
}
var oldWidth = elm.width();
function elmResized() {
var width = elm.width();
if (oldWidth != width) {
elm.trigger('widthChanged', [width, oldWidth]);
oldWidth = width;
}
}
var timer = 0;
var ielm = iframe[0];
(ielm.contentWindow || ielm).onresize = function() {
clearTimeout(timer);
timer = setTimeout(elmResized, 20);
};
}
}
It requires the following css :
iframe.width-changed {
width: 100%;
display: block;
border: 0;
height: 0;
margin: 0;
}
You can see it in action here widthChanged fiddle
I combined 2 answers here. (@simo and @bresleveloper)
https://stackblitz.com/edit/angular-double-scroll?file=src%2Fapp%2Fapp.component.html
@Component({
selector: 'app-double-scroll',
changeDetection: ChangeDetectionStrategy.OnPush,
template: `
<div class="wrapper1" #wrapper1>
<div class="div1" #div1></div>
</div>
<div class="wrapper2" #wrapper2>
<div class="div2" #div2>
<ng-content></ng-content>
</div>
</div>
`,
styles: [
`
.wrapper1, .wrapper2 { width: 100%; overflow-x: auto; overflow-y: hidden; }
`,
`
.div1 { overflow: hidden; height: 0.5px;}
`,
`
.div2 { overflow: hidden; min-width: min-content}
`
]
})
export class DoubleScrollComponent implements AfterViewInit {
@ViewChild('wrapper1') wrapper1: ElementRef<any>;
@ViewChild('wrapper2') wrapper2: ElementRef<any>;
@ViewChild('div1') div1: ElementRef<any>;
@ViewChild('div2') div2: ElementRef<any>;
constructor(private _r: Renderer2, private _cd: ChangeDetectorRef) {
}
ngAfterViewInit() {
this._cd.detach();
this._r.setStyle(this.div1.nativeElement, 'width', this.div2.nativeElement.clientWidth + 'px' );
this.wrapper1.nativeElement.onscroll = e => this.wrapper2.nativeElement.scroll((e.target as HTMLElement).scrollLeft, 0)
this.wrapper2.nativeElement.onscroll = e => this.wrapper1.nativeElement.scroll((e.target as HTMLElement).scrollLeft, 0)
}
}
<div style="width: 200px; border: 1px black dashed">
<app-double-scroll>
<div style="min-width: 400px; background-color: red; word-break: keep-all; white-space: nowrap;">
long ass text long ass text long ass text long ass text long ass text long ass text long ass text long ass text long ass text
</div>
</app-double-scroll>
<br>
<hr>
<br>
<app-double-scroll>
<div style="display: inline-block; background-color: green; word-break: keep-all; white-space: nowrap;">
short ass text
</div>
</app-double-scroll>
<br>
<hr>
<br>
<app-double-scroll>
<table width="100%" border="0" cellspacing="0" cellpadding="0">
<tbody>
<tr>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
<td>table cell</td>
</tr>
</tbody>
</table>
</app-double-scroll>
</div>
If you want to get the values via the $_POST
variable then you should not specify the contentType as "application/json"
but rather use the default "application/x-www-form-urlencoded; charset=UTF-8"
:
JavaScript:
var person = { name: "John" };
$.ajax({
//contentType: "application/json", // php://input
contentType: "application/x-www-form-urlencoded; charset=UTF-8", // $_POST
dataType : "json",
method: "POST",
url: "http://localhost/test/test.php",
data: {data: person}
})
.done(function(data) {
console.log("test: ", data);
$("#result").text(data.name);
})
.fail(function(data) {
console.log("error: ", data);
});
PHP:
<?php
// $_POST
$jsonString = $_POST['data'];
$newJsonString = json_encode($jsonString);
header('Content-Type: application/json');
echo $newJsonString;
Else if you want to send a JSON from JavaScript to PHP:
JavaScript:
var person = { name: "John" };
$.ajax({
contentType: "application/json", // php://input
//contentType: "application/x-www-form-urlencoded; charset=UTF-8", // $_POST
dataType : "json",
method: "POST",
url: "http://localhost/test/test.php",
data: person
})
.done(function(data) {
console.log("test: ", data);
$("#result").text(data.name);
})
.fail(function(data) {
console.log("error: ", data);
});
PHP:
<?php
$jsonString = file_get_contents("php://input");
$phpObject = json_decode($jsonString);
$newJsonString = json_encode($phpObject);
header('Content-Type: application/json');
echo $newJsonString;
Using .format
from Python 2.6 and higher:
>>> print '{}{}{}{}'.format(*[7,7,7,7])
7777
>>> data = [7, 7, 7, 7] * 3
>>> print ('{}'*len(data)).format(*data)
777777777777777777777777
For Python 3:
>>> print(('{}'*len(data)).format(*data))
777777777777777777777777
I think that's better to parse the json before, to avoid errors:
def format_response(response):
try:
parsed = json.loads(response.text)
except JSONDecodeError:
return response.text
return json.dumps(parsed, ensure_ascii=True, indent=4)
Update your user, domain, and proxy information in cntlm.ini
, then test your proxy with this command (run in your Cntlm installation folder):
cntlm -c cntlm.ini -I -M http://google.ro
It will ask for your password, and hopefully print your required authentication information, which must be saved in your cntlm.ini
Sample cntlm.ini
:
Username user
Domain domain
# provide actual value if autodetection fails
# Workstation pc-name
Proxy my_proxy_server.com:80
NoProxy 127.0.0.*, 192.168.*
Listen 127.0.0.1:54321
Listen 192.168.1.42:8080
Gateway no
SOCKS5Proxy 5000
# provide socks auth info if you want it
# SOCKS5User socks-user:socks-password
# printed authentication info from the previous step
Auth NTLMv2
PassNTLMv2 98D6986BCFA9886E41698C1686B58A09
Note: on linux the config file is cntlm.conf
Awesome tutorial: 3 Different Ways to Display Progress in an ASP.NET AJAX Application
Check this
SELECT A.OtherID,
Split.a.value('.', 'VARCHAR(100)') AS Data
FROM
(
SELECT OtherID,
CAST ('<M>' + REPLACE(Data, ',', '</M><M>') + '</M>' AS XML) AS Data
FROM Table1
) AS A CROSS APPLY Data.nodes ('/M') AS Split(a);
var div = document.createElement('div');
document.body.appendChild(div);
div.style.left = '32px';
div.style.top = '-16px';
div.className = 'ui-modal';
div.id = 'test';
div.innerHTML = '<span class="msg">Hello world.</span>';
div.textContent = 'Hello world.';
div.parentNode.removeChild(div);
div = document.getElementById('test');
array = document.getElementsByTagName('div');
array = document.getElementsByClassName('ui-modal');
div = document.querySelector('div #test .ui-modal');
array = document.querySelectorAll('div');
This covers the basics of DOM manipulation. Remember, element addition to the body or a body-contained node is required for the newly created node to be visible within the document.
If it's a single text widget that you want to wrap, you can either use Flexible or Expanded widgets.
Expanded(
child: Text('Some lengthy text for testing'),
)
or
Flexible(
child: Text('Some lengthy text for testing'),
)
For multiple widgets, you may choose Wrap widget. For further details checkout this
If your Object contains Objects then check if they are null, if it have primitives check for their default values.
for Instance:
Person Object
name Property with getter and setter
to check if name is not initialized.
Person p = new Person();
if(p.getName()!=null)
When in trouble what means what:
?%timeit
or ??timeit
To get the details:
Usage, in line mode:
%timeit [-n<N> -r<R> [-t|-c] -q -p<P> -o] statement
or in cell mode:
%%timeit [-n<N> -r<R> [-t|-c] -q -p<P> -o] setup_code
code
code...
Time execution of a Python statement or expression using the timeit
module. This function can be used both as a line and cell magic:
- In line mode you can time a single-line statement (though multiple
ones can be chained with using semicolons).
- In cell mode, the statement in the first line is used as setup code
(executed but not timed) and the body of the cell is timed. The cell
body has access to any variables created in the setup code.
Even if you cancel the animation in the ways above animation didStopSelector
still runs. So if you have logic states in your application driven by animations you will have problems. For this reason with the ways described above I use the context variable of UIView
animations. If you pass the current state of your program by the context param to the animation, when the animation stops your didStopSelector
function may decide if it should do something or just return based on the current state and the state value passed as context.
This question is old and so are the correct previous answers. But what I was looking for when I found this topic was something like this solution. Hopefully it helps someone.
// Loading required libraries
import java.util.*;
import java.sql.*;
public class MySQLExample {
public void run(String sql) {
// JDBC driver name and database URL
String JDBC_DRIVER = "com.mysql.jdbc.Driver";
String DB_URL = "jdbc:mysql://localhost/demo";
// Database credentials
String USER = "someuser"; // Fake of course.
String PASS = "somepass"; // This too!
Statement stmt = null;
ResultSet rs = null;
Connection conn = null;
Vector<String> columnNames = new Vector<String>();
try {
// Register JDBC driver
Class.forName(JDBC_DRIVER);
// Open a connection
conn = DriverManager.getConnection(DB_URL, USER, PASS);
// Execute SQL query
stmt = conn.createStatement();
rs = stmt.executeQuery(sql);
if (rs != null) {
ResultSetMetaData columns = rs.getMetaData();
int i = 0;
while (i < columns.getColumnCount()) {
i++;
System.out.print(columns.getColumnName(i) + "\t");
columnNames.add(columns.getColumnName(i));
}
System.out.print("\n");
while (rs.next()) {
for (i = 0; i < columnNames.size(); i++) {
System.out.print(rs.getString(columnNames.get(i))
+ "\t");
}
System.out.print("\n");
}
}
} catch (Exception e) {
System.out.println("Exception: " + e.toString());
}
finally {
try {
if (rs != null) {
rs.close();
}
if (stmt != null) {
stmt.close();
}
if (conn != null) {
conn.close();
}
} catch (Exception mysqlEx) {
System.out.println(mysqlEx.toString());
}
}
}
}
An easy way to change to a different codec, is by using encode() or decode(). In your case, you want to convert to ASCII and ignore all symbols that are not supported. For example, the Swedish letter å is not an ASCII character:
>>>s = u'Good bye in Swedish is Hej d\xe5'
>>>s = s.encode('ascii',errors='ignore')
>>>print s
Good bye in Swedish is Hej d
Edit:
Python3: str -> bytes -> str
>>>"Hej då".encode("ascii", errors="ignore").decode()
'hej d'
Python2: unicode -> str -> unicode
>>> u"hej då".encode("ascii", errors="ignore").decode()
u'hej d'
Python2: str -> unicode -> str (decode and encode in reverse order)
>>> "hej d\xe5".decode("ascii", errors="ignore").encode()
'hej d'
You need an IP-address-based reverse geocoding API... like the one from ipdata.co. I'm sure there are plenty of options available.
You may want to allow the user to override this, however. For example, they could be on a corporate VPN which makes the IP address look like it's in a different country.
Pyflakes does what you ask, it just checks the syntax. From the docs:
Pyflakes makes a simple promise: it will never complain about style, and it will try very, very hard to never emit false positives.
Pyflakes is also faster than Pylint or Pychecker. This is largely because Pyflakes only examines the syntax tree of each file individually.
To install and use:
$ pip install pyflakes
$ pyflakes yourPyFile.py
In SQL Server 2005 and later use ROW_NUMBER()
:
SELECT * FROM
( SELECT p.*,
ROW_NUMBER() OVER(PARTITION BY Partid ORDER BY PriceDate DESC) AS rn
FROM MyPrice AS p ) AS t
WHERE rn=1
Here is working code for all android versions as of API LEVEL 26+ with backward compatibility.
NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(getContext(), "M_CH_ID");
notificationBuilder.setAutoCancel(true)
.setDefaults(Notification.DEFAULT_ALL)
.setWhen(System.currentTimeMillis())
.setSmallIcon(R.drawable.ic_launcher)
.setTicker("Hearty365")
.setPriority(Notification.PRIORITY_MAX) // this is deprecated in API 26 but you can still use for below 26. check below update for 26 API
.setContentTitle("Default notification")
.setContentText("Lorem ipsum dolor sit amet, consectetur adipiscing elit.")
.setContentInfo("Info");
NotificationManager notificationManager = (NotificationManager) getContext().getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(1, notificationBuilder.build());
UPDATE for API 26 to set Max priority
NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
String NOTIFICATION_CHANNEL_ID = "my_channel_id_01";
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
NotificationChannel notificationChannel = new NotificationChannel(NOTIFICATION_CHANNEL_ID, "My Notifications", NotificationManager.IMPORTANCE_MAX);
// Configure the notification channel.
notificationChannel.setDescription("Channel description");
notificationChannel.enableLights(true);
notificationChannel.setLightColor(Color.RED);
notificationChannel.setVibrationPattern(new long[]{0, 1000, 500, 1000});
notificationChannel.enableVibration(true);
notificationManager.createNotificationChannel(notificationChannel);
}
NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this, NOTIFICATION_CHANNEL_ID);
notificationBuilder.setAutoCancel(true)
.setDefaults(Notification.DEFAULT_ALL)
.setWhen(System.currentTimeMillis())
.setSmallIcon(R.drawable.ic_launcher)
.setTicker("Hearty365")
// .setPriority(Notification.PRIORITY_MAX)
.setContentTitle("Default notification")
.setContentText("Lorem ipsum dolor sit amet, consectetur adipiscing elit.")
.setContentInfo("Info");
notificationManager.notify(/*notification id*/1, notificationBuilder.build());
It should be :
public async Task<ActionResult> GetSomeJsonData()
{
var model = // ... get data or build model etc.
return Json(new { Data = model }, JsonRequestBehavior.AllowGet);
}
or more simply:
return Json(model, JsonRequestBehavior.AllowGet);
I did notice that you are calling GetResources() from another ActionResult which wont work. If you are looking to get JSON back, you should be calling GetResources() from ajax directly...
An array is implicitly convertable to a pointer, and pointer-to-reference is illegal in C++
sprintf: Writes formatted data to a character string in memory instead of stdout
Syntax of sprintf is:
#include <stdio.h>
int sprintf (char *string, const char *format
[,item [,item]…]);
Here,
String refers to the pointer to a buffer in memory where the data is to be written.
Format refers to pointer to a character string defining the format.
Each item is a variable or expression specifying the data to write.
The value returned by sprintf is greater than or equal to zero if the operation is successful or in other words the number of characters written, not counting the terminating null character is returned and returns a value less than zero if an error occurred.
printf: Prints to stdout
Syntax for printf is:
printf format [argument]…
The only difference between sprintf() and printf() is that sprintf() writes data into a character array, while printf() writes data to stdout, the standard output device.
a fresh answer to a very old question:
starting from python 3.2 you can do this:
import os
path = '/home/dail/first/second/third'
os.makedirs(path, exist_ok=True)
thanks to the exist_ok
flag this will not even complain if the directory exists (depending on your needs....).
starting from python 3.4 (which includes the pathlib module) you can do this:
from pathlib import Path
path = Path('/home/dail/first/second/third')
path.mkdir(parents=True)
starting from python 3.5 mkdir
also has an exist_ok
flag - setting it to True
will raise no exception if the directory exists:
path.mkdir(parents=True, exist_ok=True)
I'm assuming you're using express
, given the logs you have in your question. The key is to set the timeout
property on server (the following sets the timeout to one second, use whatever value you want):
var server = app.listen(app.get('port'), function() {
debug('Express server listening on port ' + server.address().port);
});
server.timeout = 1000;
If you're not using express and are only working with vanilla node, the principle is the same. The following will not return data:
var http = require('http');
var server = http.createServer(function (req, res) {
setTimeout(function() {
res.writeHead(200, {'Content-Type': 'text/plain'});
res.end('Hello World\n');
}, 200);
}).listen(1337, '127.0.0.1');
server.timeout = 20;
console.log('Server running at http://127.0.0.1:1337/');
Combination of Mritunjay and Bartu's answers are full answer to this question. I copying the full example.
<input class="form-control" type="email" required="" placeholder="username"
oninvalid="this.setCustomValidity('Please Enter valid email')"
oninput="setCustomValidity('')"></input>
Here,
this.setCustomValidity('Please Enter valid email')" - Display the custom message on invalidated of the field
oninput="setCustomValidity('')" - Remove the invalidate message on validated filed.
The example in your question is that of a curried function
which makes use of arrow function
and has an implicit return
for the first argument.
Arrow function lexically bind this i.e they do not have their own this
argument but take the this
value from the enclosing scope
An equivalent of the above code would be
const handleChange = (field) {
return function(e) {
e.preventDefault();
/// Do something here
}.bind(this);
}.bind(this);
One more thing to note about your example is that define handleChange
as a const or a function. Probably you are using it as part of a class method and it uses a class fields syntax
so instead of binding the outer function directly, you would bind it in the class constructor
class Something{
constructor(props) {
super(props);
this.handleChange = this.handleChange.bind(this);
}
handleChange(field) {
return function(e) {
e.preventDefault();
// do something
}
}
}
Another thing to note in the example is the difference between implicit and explicit return.
const abc = (field) => field * 2;
Above is an example of implicit return ie. it takes the value field as argument and returns the result field*2
which explicitly specifying the function to return
For an explicit return you would explicitly tell the method to return the value
const abc = () => { return field*2; }
Another thing to note about arrow functions is that they do not have their own arguments
but inherit that from the parents scope as well.
For example if you just define an arrow function like
const handleChange = () => {
console.log(arguments) // would give an error on running since arguments in undefined
}
As an alternative arrow functions provide the rest parameters that you can use
const handleChange = (...args) => {
console.log(args);
}
You can change
Range("B3:B65536").Copy Destination:=Sheets("DB").Range("B" & lastrow)
to
Range("B3:B65536").Copy
Sheets("DB").Range("B" & lastrow).PasteSpecial xlPasteValues
BTW, if you have xls file (excel 2003), you would get an error if your lastrow
would be greater 3.
Try to use this code instead:
Sub Get_Data()
Dim lastrowDB As Long, lastrow As Long
Dim arr1, arr2, i As Integer
With Sheets("DB")
lastrowDB = .Cells(.Rows.Count, "A").End(xlUp).Row + 1
End With
arr1 = Array("B", "C", "D", "E", "F", "AH", "AI", "AJ", "J", "P", "AF")
arr2 = Array("B", "A", "C", "P", "D", "E", "G", "F", "H", "I", "J")
For i = LBound(arr1) To UBound(arr1)
With Sheets("Sheet1")
lastrow = Application.Max(3, .Cells(.Rows.Count, arr1(i)).End(xlUp).Row)
.Range(.Cells(3, arr1(i)), .Cells(lastrow, arr1(i))).Copy
Sheets("DB").Range(arr2(i) & lastrowDB).PasteSpecial xlPasteValues
End With
Next
Application.CutCopyMode = False
End Sub
Note, above code determines last non empty row on DB
sheet in column A
(variable lastrowDB
). If you need to find lastrow for each destination column in DB
sheet, use next modification:
For i = LBound(arr1) To UBound(arr1)
With Sheets("DB")
lastrowDB = .Cells(.Rows.Count, arr2(i)).End(xlUp).Row + 1
End With
' NEXT CODE
Next
You could also use next approach instead Copy/PasteSpecial
. Replace
.Range(.Cells(3, arr1(i)), .Cells(lastrow, arr1(i))).Copy
Sheets("DB").Range(arr2(i) & lastrowDB).PasteSpecial xlPasteValues
with
Sheets("DB").Range(arr2(i) & lastrowDB).Resize(lastrow - 2).Value = _
.Range(.Cells(3, arr1(i)), .Cells(lastrow, arr1(i))).Value
This one shows the user's uid as well as all the groups (with their gids) they belong to
id userid
What about this simple code, works for me and on Windows 7
set cntr=1
:begin
echo %cntr%
set /a cntr=%cntr%+1
if %cntr% EQU 1000 goto end
goto begin
:end
I tried the following code and it worked for me.
<button class="btn btn-default center-block" type="submit">Button</button>
The button control is in a div and using center-block class of bootstrap helped me to align the button to the center of div
Check the link where you will find the center-block class
Typically you need to do 5 things to include a library in your project:
1) Add #include statements necessary files with declarations/interfaces, e.g.:
#include "library.h"
2) Add an include directory for the compiler to look into
-> Configuration Properties/VC++ Directories/Include Directories (click and edit, add a new entry)
3) Add a library directory for *.lib files:
-> project(on top bar)/properties/Configuration Properties/VC++ Directories/Library Directories (click and edit, add a new entry)
4) Link the lib's *.lib files
-> Configuration Properties/Linker/Input/Additional Dependencies (e.g.: library.lib;
5) Place *.dll files either:
-> in the directory you'll be opening your final executable from or into Windows/system32
Update your connection string as shown below (without port
variable as well):
MysqlConn.ConnectionString = "Server=127.0.0.1;Database=patholabs;Uid=pankaj;Pwd=master;"
Hope this helps...
Use requests
library to GET, POST, PUT or DELETE by hitting a REST API endpoint. Pass the rest api endpoint url in url
, payload(dict) in data
and header/metadata in headers
import requests, json
url = "bugs.python.org"
payload = {"number": 12524,
"type": "issue",
"action": "show"}
header = {"Content-type": "application/x-www-form-urlencoded",
"Accept": "text/plain"}
response_decoded_json = requests.post(url, data=payload, headers=header)
response_json = response_decoded_json.json()
print response_json
So to make your expression work, changing &&
for -a
will do the trick.
It is correct like this:
if [ -f $VAR1 ] && [ -f $VAR2 ] && [ -f $VAR3 ]
then ....
or like
if [[ -f $VAR1 && -f $VAR2 && -f $VAR3 ]]
then ....
or even
if [ -f $VAR1 -a -f $VAR2 -a -f $VAR3 ]
then ....
You can find further details in this question bash : Multiple Unary operators in if statement and some references given there like What is the difference between test, [ and [[ ?.
If you are using typescript and getting an error after installing all node modules then remove package-lock.json
. And then run npm install
.
foreach (NetworkInterface nic in NetworkInterface.GetAllNetworkInterfaces())
{
if (nic.OperationalStatus == OperationalStatus.Up)
{
PhysicalAddress Mac = nic.GetPhysicalAddress();
}
}
The others told you enough about your issue with multiple calls of readLine()
.
I just wanted to leave sth about code style:
While you see this line =
assignement and != null
check together in one while condition in most examples (like @gotomanners example here) I prefer using a for
for it.
It is much more readable in my opinion ...
for (String line = in.readLine(); line != null; line = in.readLine()) {
...
}
Another nice way to write it you see in @TheCapn's example. But when you write it that way you easily see that's what a for-loop is made for.
I do not like assignments scrambled with conditions in one line. It is bad style in my opinion. But because it is so MUCH popular for that special case here to do it that way I would not consider it really bad style. (But cannot understand who established this bad style to become that popular.)
you need to know the index of the object you are changing. then its pretty simple
projects[1].desc= "new string";
There are a few different points here:
.npmrc
file created.Running npm config ls -l
will show you all the implicit settings for npm, including what it thinks is the right place to put the .npmrc
. But if you have never logged in (using npm login
) it will be empty. Simply log in to create it.
Another thing is #2. You can actually do that by putting a .npmrc
file in the NPM package's root. It will then be used by NPM when authenticating. It also supports variable interpolation from your shell so you could do stuff like this:
; Get the auth token to use for fetching private packages from our private scope
; see http://blog.npmjs.org/post/118393368555/deploying-with-npm-private-modules
; and also https://docs.npmjs.com/files/npmrc
//registry.npmjs.org/:_authToken=${NPM_TOKEN}
Pointers
You can pass it in as part of the LinearLayout.LayoutParams
constructor:
LinearLayout.LayoutParams param = new LinearLayout.LayoutParams(
LayoutParams.MATCH_PARENT,
LayoutParams.MATCH_PARENT,
1.0f
);
YOUR_VIEW.setLayoutParams(param);
The last parameter is the weight.
You'll need to store the old value manually. You could store it a lot of different ways. You could use a javascript object to store values for each textbox, or you could use a hidden field (I wouldn't recommend it - too html heavy), or you could use an expando property on the textbox itself, like this:
<input type="text" onfocus="this.oldvalue = this.value;" onchange="onChangeTest(this);this.oldvalue = this.value;" />
Then your javascript function to handle the change looks like this:
<script type="text/javascript">
function onChangeTest(textbox) {
alert("Value is " + textbox.value + "\n" + "Old Value is " + textbox.oldvalue);
}
</script>
None of the above worked for me, because my window is a JPopupMenu
.
What did work was this:
addAncestorListener(new AncestorListener() {
@Override
public void ancestorAdded(AncestorEvent ae) {
myEdit.requestFocus();
}
// ... other ancestor listener methods
}
It looks like psexec -h
is the way to do this:
-h If the target system is Windows Vista or higher, has the process
run with the account's elevated token, if available.
Which... doesn't seem to be listed in the online documentation in Sysinternals - PsExec.
But it works on my machine.
And if you would like to use an existing context, rather than a new context which would be loaded from xml configuration by org.springframework.web.context.ContextLoaderListener, then see -> https://stackoverflow.com/a/40694787/3004747
Complementing rijul gupta answer:
String strSDCardPath = System.getenv("SECONDARY_STORAGE");
if ((strSDCardPath == null) || (strSDCardPath.length() == 0)) {
strSDCardPath = System.getenv("EXTERNAL_SDCARD_STORAGE");
}
//If may get a full path that is not the right one, even if we don't have the SD Card there.
//We just need the "/mnt/extSdCard/" i.e and check if it's writable
if(strSDCardPath != null) {
if (strSDCardPath.contains(":")) {
strSDCardPath = strSDCardPath.substring(0, strSDCardPath.indexOf(":"));
}
File externalFilePath = new File(strSDCardPath);
if (externalFilePath.exists() && externalFilePath.canWrite()){
//do what you need here
}
}
Personally I don't find the standard diagramming technique very helpful - the arrows always seem to point the wrong way for me. (They generally point towards the "parent" of each commit, which ends up being backwards in time, which is weird).
To explain it in words:
For reasons I don't understand, GUI tools for Git have never made much of an effort to present merge histories more cleanly, abstracting out the individual merges. So if you want a "clean history", you need to use rebase.
I seem to recall having read blog posts from programmers who only use rebase and others that never use rebase.
I'll try explaining this with a just-words example. Let's say other people on your project are working on the user interface, and you're writing documentation. Without rebase, your history might look something like:
Write tutorial
Merge remote-tracking branch 'origin/master' into fixdocs
Bigger buttons
Drop down list
Extend README
Merge remote-tracking branch 'origin/master' into fixdocs
Make window larger
Fix a mistake in howto.md
That is, merges and UI commits in the middle of your documentation commits.
If you rebased your code onto master instead of merging it, it would look like this:
Write tutorial
Extend README
Fix a mistake in howto.md
Bigger buttons
Drop down list
Make window larger
All of your commits are at the top (newest), followed by the rest of the master
branch.
(Disclaimer: I'm the author of the "10 things I hate about Git" post referred to in another answer)
There are two "generations" of python-docx. The initial generation ended with the 0.2.x versions and the "new" generation started at v0.3.0. The new generation is a ground-up, object-oriented rewrite of the legacy version. It has a distinct repository located here.
The opendocx() function is part of the legacy API. The documentation is for the new version. The legacy version has no documentation to speak of.
Neither reading nor writing hyperlinks are supported in the current version. That capability is on the roadmap, and the project is under active development. It turns out to be quite a broad API because Word has so much functionality. So we'll get to it, but probably not in the next month unless someone decides to focus on that aspect and contribute it. UPDATE Hyperlink support was added subsequent to this answer.
C# 6 adds a new feature just for this: extension Add methods. This has always been possible for VB.net but is now available in C#.
Now you don't have to add Add()
methods to your classes directly, you can implement them as extension methods. When extending any enumerable type with an Add()
method, you'll be able to use it in collection initializer expressions. So you don't have to derive from lists explicitly anymore (as mentioned in another answer), you can simply extend it.
public static class TupleListExtensions
{
public static void Add<T1, T2>(this IList<Tuple<T1, T2>> list,
T1 item1, T2 item2)
{
list.Add(Tuple.Create(item1, item2));
}
public static void Add<T1, T2, T3>(this IList<Tuple<T1, T2, T3>> list,
T1 item1, T2 item2, T3 item3)
{
list.Add(Tuple.Create(item1, item2, item3));
}
// and so on...
}
This will allow you to do this on any class that implements IList<>
:
var numbers = new List<Tuple<int, string>>
{
{ 1, "one" },
{ 2, "two" },
{ 3, "three" },
{ 4, "four" },
{ 5, "five" },
};
var points = new ObservableCollection<Tuple<double, double, double>>
{
{ 0, 0, 0 },
{ 1, 2, 3 },
{ -4, -2, 42 },
};
Of course you're not restricted to extending collections of tuples, it can be for collections of any specific type you want the special syntax for.
public static class BigIntegerListExtensions
{
public static void Add(this IList<BigInteger> list,
params byte[] value)
{
list.Add(new BigInteger(value));
}
public static void Add(this IList<BigInteger> list,
string value)
{
list.Add(BigInteger.Parse(value));
}
}
var bigNumbers = new List<BigInteger>
{
new BigInteger(1), // constructor BigInteger(int)
2222222222L, // implicit operator BigInteger(long)
3333333333UL, // implicit operator BigInteger(ulong)
{ 4, 4, 4, 4, 4, 4, 4, 4 }, // extension Add(byte[])
"55555555555555555555555555555555555555", // extension Add(string)
};
C# 7 will be adding in support for tuples built into the language, though they will be of a different type (System.ValueTuple
instead). So to it would be good to add overloads for value tuples so you have the option to use them as well. Unfortunately, there are no implicit conversions defined between the two.
public static class ValueTupleListExtensions
{
public static void Add<T1, T2>(this IList<Tuple<T1, T2>> list,
ValueTuple<T1, T2> item) => list.Add(item.ToTuple());
}
This way the list initialization will look even nicer.
var points = new List<Tuple<int, int, int>>
{
(0, 0, 0),
(1, 2, 3),
(-1, 12, -73),
};
But instead of going through all this trouble, it might just be better to switch to using ValueTuple
exclusively.
var points = new List<(int, int, int)>
{
(0, 0, 0),
(1, 2, 3),
(-1, 12, -73),
};
use following LoadType method to use System.Reflection to load all registered(GAC) and referenced assemblies and check for typeName
public Type[] LoadType(string typeName)
{
return LoadType(typeName, true);
}
public Type[] LoadType(string typeName, bool referenced)
{
return LoadType(typeName, referenced, true);
}
private Type[] LoadType(string typeName, bool referenced, bool gac)
{
//check for problematic work
if (string.IsNullOrEmpty(typeName) || !referenced && !gac)
return new Type[] { };
Assembly currentAssembly = Assembly.GetExecutingAssembly();
List<string> assemblyFullnames = new List<string>();
List<Type> types = new List<Type>();
if (referenced)
{ //Check refrenced assemblies
foreach (AssemblyName assemblyName in currentAssembly.GetReferencedAssemblies())
{
//Load method resolve refrenced loaded assembly
Assembly assembly = Assembly.Load(assemblyName.FullName);
//Check if type is exists in assembly
var type = assembly.GetType(typeName, false, true);
if (type != null && !assemblyFullnames.Contains(assembly.FullName))
{
types.Add(type);
assemblyFullnames.Add(assembly.FullName);
}
}
}
if (gac)
{
//GAC files
string gacPath = Environment.GetFolderPath(System.Environment.SpecialFolder.Windows) + "\\assembly";
var files = GetGlobalAssemblyCacheFiles(gacPath);
foreach (string file in files)
{
try
{
//reflection only
Assembly assembly = Assembly.ReflectionOnlyLoadFrom(file);
//Check if type is exists in assembly
var type = assembly.GetType(typeName, false, true);
if (type != null && !assemblyFullnames.Contains(assembly.FullName))
{
types.Add(type);
assemblyFullnames.Add(assembly.FullName);
}
}
catch
{
//your custom handling
}
}
}
return types.ToArray();
}
public static string[] GetGlobalAssemblyCacheFiles(string path)
{
List<string> files = new List<string>();
DirectoryInfo di = new DirectoryInfo(path);
foreach (FileInfo fi in di.GetFiles("*.dll"))
{
files.Add(fi.FullName);
}
foreach (DirectoryInfo diChild in di.GetDirectories())
{
var files2 = GetGlobalAssemblyCacheFiles(diChild.FullName);
files.AddRange(files2);
}
return files.ToArray();
}
If you are using oc4j to deploy the ear.
Make sure you set in the project the correct path for deploy.home=
You can fiind deploy.home in common.properties file
The oc4j needs to reload the new created class in the ear so that the server class and the client class have the same serialVersionUID
from tkinter import *
window = tk()
window.geometry("300x300")
def close_window ():
window.destroy()
button = Button ( text = "Good-bye", command = close_window)
button.pack()
window.mainloop()
CHARINDEX()
searches for a substring within a larger string, and returns the position of the match, or 0 if no match is found
if CHARINDEX('ME',@mainString) > 0
begin
--do something
end
Edit or from daniels answer, if you're wanting to find a word (and not subcomponents of words), your CHARINDEX
call would look like:
CHARINDEX(' ME ',' ' + REPLACE(REPLACE(@mainString,',',' '),'.',' ') + ' ')
(Add more recursive REPLACE() calls for any other punctuation that may occur)
You can press I
twice to interrupt the kernel.
This only works if you're in Command mode. If not already enabled, press Esc to enable it.
I experienced the same problem. I made a short research on the possible reasons for this strange behavior and I found the following:
During the first execution of a new Facebook app, it will allow connection/login even if you don't specify any key hashes.
For me, the tutorial which Facebook provided didn't generate the correct key hash, because it was giving the wrong configuration. When executing:
keytool -exportcert -alias androiddebugkey -keystore %HOMEPATH%\.android\debug.keystore | openssl sha1 -binary | openssl
base64
make sure you check all properties - the HOMEPATH
, the existence of the keystore, etc. Maybe you also have to provide password.
What generated the proper configuration was the solution suggested by @Mahendran.
Also, if you see the error originally posted (http://i.stack.imgur.com/58q3v.png), most probably the key hash you see on the screen is your real one. If nothing else works, try inputting it in Facebook.
I got all those results with: Windows 7 64-bit edition, Android Studio 1.2.2, JDK 7.
With Java 8+ you can use Stream API:
boolean areAllDistinct(List<Block> blocksList) {
return blocksList.stream().map(Block::getNum).distinct().count() == blockList.size();
}
>>> names = ['King', 'Queen', 'Joker']
>>> any(n in 'King and john' for n in names)
True
>>> all(n in 'King and Queen' for n in names)
False
It just reduce several line of code into one. You don't have to write lengthy code like:
for n in names:
if n in 'King and john':
print True
else:
print False
$('#someid').attr('disabled', 'true');
Via Jquery:
$(location).attr('href','http://example.com/Registration/Success/');
I would love the ability to use a role as a collection of tasks such that, in my playbook, I can choose which subset of tasks to run. Unfortunately, the playbook can only load them all in and then you have to use the --tags
option on the cmdline to choose which tasks to run. The problem with this is that all of the tasks will run unless you remember to set --tags
or --skip-tags
.
I have set up some tasks, however, with a when:
clause that will only fire if a var is set.
e.g.
# role/stuff/tasks/main.yml
- name: do stuff
when: stuff|default(false)
Now, this task will not fire by default, but only if I set the stuff=true
$ ansible-playbook -e '{"stuff":true}'
or in a playbook:
roles:
- {"role":"stuff", "stuff":true}
Here is my two cents:
int split (const char *txt, char delim, char ***tokens)
{
int *tklen, *t, count = 1;
char **arr, *p = (char *) txt;
while (*p != '\0') if (*p++ == delim) count += 1;
t = tklen = calloc (count, sizeof (int));
for (p = (char *) txt; *p != '\0'; p++) *p == delim ? *t++ : (*t)++;
*tokens = arr = malloc (count * sizeof (char *));
t = tklen;
p = *arr++ = calloc (*(t++) + 1, sizeof (char *));
while (*txt != '\0')
{
if (*txt == delim)
{
p = *arr++ = calloc (*(t++) + 1, sizeof (char *));
txt++;
}
else *p++ = *txt++;
}
free (tklen);
return count;
}
Usage:
char **tokens;
int count, i;
const char *str = "JAN,FEB,MAR,APR,MAY,JUN,JUL,AUG,SEP,OCT,NOV,DEC";
count = split (str, ',', &tokens);
for (i = 0; i < count; i++) printf ("%s\n", tokens[i]);
/* freeing tokens */
for (i = 0; i < count; i++) free (tokens[i]);
free (tokens);
This assumes that the first row of the csv is the headers
import csv
# open the file in universal line ending mode
with open('test.csv', 'rU') as infile:
# read the file as a dictionary for each row ({header : value})
reader = csv.DictReader(infile)
data = {}
for row in reader:
for header, value in row.items():
try:
data[header].append(value)
except KeyError:
data[header] = [value]
# extract the variables you want
names = data['name']
latitude = data['latitude']
longitude = data['longitude']
In your case you are having model on same page, but you have it declared after your Component class, so that's you need to use forwardRef
to refer to Class
. Don't prefer to do this, always have model
object in separate file.
export class testWidget {
constructor(@Inject(forwardRef(() => Model)) private service: Model) {}
}
Additionally you have to change you view interpolation to refer to correct object
{{model?.param1}}
Better thing you should do is, you can have your Model
Class define in different file & then import it as an when you require it by doing. Also have export
before you class name, so that you can import it.
import { Model } from './model';
It depends upon which platform you're on as to how it will be translated and whether it will be there at all: Wikipedia entry on newline
Don't see any external libraries mentioned here, but Lodash has _.template()
,
https://lodash.com/docs/4.17.10#template
If you're already making use of the library it's worth checking out, and if you're not making use of Lodash you can always cherry pick methods from npm npm install lodash.template
so you can cut down overhead.
Simplest form -
var compiled = _.template('hello <%= user %>!');
compiled({ 'user': 'fred' });
// => 'hello fred!'
There are a bunch of configuration options also -
_.templateSettings.interpolate = /{{([\s\S]+?)}}/g;
var compiled = _.template('hello {{ user }}!');
compiled({ 'user': 'mustache' });
// => 'hello mustache!'
I found custom delimiters most interesting.
For saving the original stdout and stderr you can use:
exec [fd number]<&1
exec [fd number]<&2
For example, the following code will print "walla1" and "walla2" to the log file (a.txt
), "walla3" to stdout, "walla4" to stderr.
#!/bin/bash
exec 5<&1
exec 6<&2
exec 1> ~/a.txt 2>&1
echo "walla1"
echo "walla2" >&2
echo "walla3" >&5
echo "walla4" >&6
If you mean that you want to enable the submit after the user has typed at least one character, then you need to attach a key event that will check it for you.
Something like:
$("#fbss").keypress(function() {
if($(this).val().length > 1) {
// Enable submit button
} else {
// Disable submit button
}
});
Thomas:
JSON is preferred for front end use because we have easy lookups. Therefore you have no XML to deal with. SOAP is a pain without using a library because of this. Somebody mentioned SOAPClient, which is a good library, we started with it for our project. However it had some limitations and we had to rewrite large chunks of it. It's been released as SOAPjs and supports passing complex objects to the server, and includes some sample proxy code to consume services from other domains.
If you removed the branch and forgot it's commit id you can do this command:
git log --graph --decorate $(git rev-list -g --all)
After this you'll be able to see all commits.
Then you can do git checkout
to this id and under this commit create a new branch.
I came across lot of posts searching for the same - "Mongodb Joins" and alternatives or equivalents. So my answer would help many other who are like me. This is the answer I would be looking for.
I am using Mongoose with Express framework. There is a functionality called Population
in place of joins.
As mentioned in Mongoose docs.
There are no joins in MongoDB but sometimes we still want references to documents in other collections. This is where population comes in.
This StackOverflow answer shows a simple example on how to use it.
In Swift, if you are using NSDictionary, you can use setValue
:
dict.setValue("value", forKey: "key")
There were just a couple of minor amendments required:
ans=True
while ans:
print ("""
1.Add a Student
2.Delete a Student
3.Look Up Student Record
4.Exit/Quit
""")
ans=raw_input("What would you like to do? ")
if ans=="1":
print("\n Student Added")
elif ans=="2":
print("\n Student Deleted")
elif ans=="3":
print("\n Student Record Found")
elif ans=="4":
print("\n Goodbye")
elif ans !="":
print("\n Not Valid Choice Try again")
I have changed the four quotes to three (this is the number required for multiline quotes), added a closing bracket after "What would you like to do? "
and changed input to raw_input.
Here is the example in which you can easily find the way to use Post,GET method and use the same way to add other curd operations as well..
#libraries to include
import os
from flask import request, jsonify
from app import app, mongo
import logger
ROOT_PATH = os.environ.get('ROOT_PATH')<br>
@app.route('/get/questions/', methods=['GET', 'POST','DELETE', 'PATCH'])
def question():
# request.args is to get urls arguments
if request.method == 'GET':
start = request.args.get('start', default=0, type=int)
limit_url = request.args.get('limit', default=20, type=int)
questions = mongo.db.questions.find().limit(limit_url).skip(start);
data = [doc for doc in questions]
return jsonify(isError= False,
message= "Success",
statusCode= 200,
data= data), 200
# request.form to get form parameter
if request.method == 'POST':
average_time = request.form.get('average_time')
choices = request.form.get('choices')
created_by = request.form.get('created_by')
difficulty_level = request.form.get('difficulty_level')
question = request.form.get('question')
topics = request.form.get('topics')
##Do something like insert in DB or Render somewhere etc. it's up to you....... :)
The result of exit() function and die() function is allways same. But as explained in alias manual page (http://php.net/manual/en/aliases.php), it says that die() function calls exit function. I think it is hard coded like below:
function die($msg){
exit($msg);
}
This is not a performance issue for small, medium and large projects but if project has billions multiply billions multiply billions processes, this happens very important performance optimization state.
But very most of people don't thinks this is a problem, because if you have that much processes, you must think more problem than if a function is master or alias.
But, exact answer is that; allways master function is more faster than alias.
Finally; Alias manual page says that, you may no longer use die. It is only an alias, and it is deprecated.
It is usually a bad idea to use these kind of aliases, as they may be bound to obsolescence or renaming, which will lead to unportable script. This list is provided to help those who want to upgrade their old scripts to newer syntax.
For perfomance:
$('#example').children().last()
or if you want a last children with a certain class as commented above.
$('#example').children('.test').last()
or a specific child element with a specific class
$('#example').children('li.test').last()
Try using this code:
var milisegundos = parseInt(data.replace("/Date(", "").replace(")/", ""));
var newDate = new Date(milisegundos).toLocaleDateString("en-UE");
Enjoy it!
This is a crossbrowser solution that I was looking at a little while ago that runs on the client and using jQuery:
(function($) {
$.fn.breakWords = function() {
this.each(function() {
if(this.nodeType !== 1) { return; }
if(this.currentStyle && typeof this.currentStyle.wordBreak === 'string') {
//Lazy Function Definition Pattern, Peter's Blog
//From http://peter.michaux.ca/article/3556
this.runtimeStyle.wordBreak = 'break-all';
}
else if(document.createTreeWalker) {
//Faster Trim in Javascript, Flagrant Badassery
//http://blog.stevenlevithan.com/archives/faster-trim-javascript
var trim = function(str) {
str = str.replace(/^\s\s*/, '');
var ws = /\s/,
i = str.length;
while (ws.test(str.charAt(--i)));
return str.slice(0, i + 1);
};
//Lazy Function Definition Pattern, Peter's Blog
//From http://peter.michaux.ca/article/3556
//For Opera, Safari, and Firefox
var dWalker = document.createTreeWalker(this, NodeFilter.SHOW_TEXT, null, false);
var node,s,c = String.fromCharCode('8203');
while (dWalker.nextNode()) {
node = dWalker.currentNode;
//we need to trim String otherwise Firefox will display
//incorect text-indent with space characters
s = trim( node.nodeValue ).split('').join(c);
node.nodeValue = s;
}
}
});
return this;
};
})(jQuery);
Using VS2013 .net 4.5
I had this same issue.
The "Most likely causes" section on the error message page provided the most help. For me. It said "This application defines configuration in the system.web/httpModules section." Then in the "Things you can try" section it said "Migrate the configuration to the system.webServer/modules section."
<system.web>
<httpHandlers>
<add type="DevExpress.Web.ASPxUploadProgressHttpHandler, DevExpress.Web.v15.1, Version=15.1.4.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" verb="GET,POST" path="ASPxUploadProgressHandlerPage.ashx" validate="false" />
<add type="DevExpress.Web.ASPxHttpHandlerModule, DevExpress.Web.v15.1, Version=15.1.4.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" verb="GET" path="DX.ashx" validate="false" />
</httpHandlers>
<httpModules>
<add type="DevExpress.Web.ASPxHttpHandlerModule, DevExpress.Web.v15.1, Version=15.1.4.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" name="ASPxHttpHandlerModule" />
</httpModules>
</system.web>
into the system.webServer section.
<system.webServer>
<handlers>
<add type="DevExpress.Web.ASPxUploadProgressHttpHandler, DevExpress.Web.v15.1, Version=15.1.4.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" verb="GET,POST" path="ASPxUploadProgressHandlerPage.ashx" name="ASPxUploadProgressHandler" preCondition="integratedMode" />
<add type="DevExpress.Web.ASPxHttpHandlerModule, DevExpress.Web.v15.1, Version=15.1.4.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" verb="GET" path="DX.ashx" name="ASPxHttpHandlerModule" preCondition="integratedMode" />
</handlers>
<modules>
<add type="DevExpress.Web.ASPxHttpHandlerModule, DevExpress.Web.v15.1, Version=15.1.4.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" name="ASPxHttpHandlerModule" />
</modules>
</system.webServer>
How to redirect to Login page when Session is expired in Java web application?
This is a wrong question. You should differentiate between the cases "User is not logged in" and "Session is expired". You basically want to redirect to login page when user is not logged in. Not when session is expired. The currently accepted answer only checks HttpSession#isNew()
. But this obviously fails when the user has sent more than one request in the same session when the session is implicitly created by the JSP or what not. E.g. when just pressing F5 on the login page.
As said, you should instead be checking if the user is logged in or not. Given the fact that you're asking this kind of question while standard authentication frameworks like j_security_check
, Shiro, Spring Security, etc already transparently manage this (and thus there would be no need to ask this kind of question on them), that can only mean that you're using a homegrown authentication approach.
Assuming that you're storing the logged-in user in the session in some login servlet like below:
@WebServlet("/login")
public class LoginServlet extends HttpServlet {
@EJB
private UserService userService;
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
request.getRequestDispatcher("/WEB-INF/login.jsp").forward(request, response);
}
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String username = request.getParameter("username");
String password = request.getParameter("password");
User user = userService.find(username, password);
if (user != null) {
request.getSession().setAttribute("user", user);
response.sendRedirect(request.getContextPath() + "/home");
} else {
request.setAttribute("error", "Unknown login, try again");
doGet(request, response);
}
}
}
Then you can check for that in a login filter like below:
@WebFilter("/*")
public class LoginFilter implements Filter {
@Override
public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws ServletException, IOException {
HttpServletRequest request = (HttpServletRequest) req;
HttpServletResponse response = (HttpServletResponse) res;
HttpSession session = request.getSession(false);
String loginURI = request.getContextPath() + "/login";
boolean loggedIn = session != null && session.getAttribute("user") != null;
boolean loginRequest = request.getRequestURI().equals(loginURI);
if (loggedIn || loginRequest) {
chain.doFilter(request, response);
} else {
response.sendRedirect(loginURI);
}
}
// ...
}
No need to fiddle around with brittle HttpSession#isNew()
checks.
Int
32 bits (4byte)
-2,147,483,648 to 2,147,483,647
Long
64 bits (8byte)
-9,223,372,036,854,775,808 to 9,223,372,036,854,775,807
If your usage of a variable falls in the 32 bit range, use Int
, else use long
. Usually long is used for scientific computations and stuff like that need much accuracy. (eg. value of pi).
An example of choosing one over the other is YouTube's case. They first defined video view counter as an
int
which was overflowed when more than 2,147,483,647 views where received to a popular video. Since anInt
counter cannot store any value more than than its range, YouTube changed the counter to a 64 bit variable and now can count up to 9,223,372,036,854,775,807 views. Understand your data and choose the type which fits as 64 bit variable will take double the memory than a 32 bit variable.
You can get that error if you have an object with the same name as the schema. For example:
create sequence s2;
begin
s2.a;
end;
/
ORA-06550: line 2, column 6:
PLS-00302: component 'A' must be declared
ORA-06550: line 2, column 3:
PL/SQL: Statement ignored
When you refer to S2.MY_FUNC2
the object name is being resolved so it doesn't try to evaluate S2 as a schema name. When you just call it as MY_FUNC2
there is no confusion, so it works.
The documentation explains name resolution. The first piece of the qualified object name - S2 here - is evaluated as an object on the current schema before it is evaluated as a different schema.
It might not be a sequence; other objects can cause the same error. You can check for the existence of objects with the same name by querying the data dictionary.
select owner, object_type, object_name
from all_objects
where object_name = 'S2';
There are 3 ways I can think of:
The way that is easiest to explain is
:%s/phrase to delete//gc
but you can also (personally I use this second one more often) do a regular search for the phrase to delete
/phrase to delete
Vim will take you to the beginning of the next occurrence of the phrase.
Go into insert mode (hit i) and use the Delete key to remove the phrase.
Hit escape when you have deleted all of the phrase.
Now that you have done this one time, you can hit n to go to the next occurrence of the phrase and then hit the dot/period "." key to perform the delete action you just performed
Continue hitting n and dot until you are done.
Lastly you can do a search for the phrase to delete (like in second method) but this time, instead of going into insert mode, you
Count the number of characters you want to delete
Type that number in (with number keys)
Hit the x key - characters should get deleted
Continue through with n and dot like in the second method.
PS - And if you didn't know already you can do a capital n to move backwards through the search matches.
Update with Swift 3
button.layer.borderWidth = 0.8
button.layer.borderColor = UIColor.blue.cgColor
The best solution I've found in this is to create a lookup table with the possible values as a primary key, and create a foreign key to the lookup table.
If you have PHP on the back-end, you can use this code:
$image = 'http://images.itracki.com/2011/06/favicon.png';
// Read image path, convert to base64 encoding
$imageData = base64_encode(file_get_contents($image));
// Format the image SRC: data:{mime};base64,{data};
$src = 'data: '.mime_content_type($image).';base64,'.$imageData;
// Echo out a sample image
echo '<img src="'.$src.'">';
If anyone is also looking for how to get the name of the HTML tag, you can use "tagName": $(this)[0].tagName
This is a way to see if any XML-files exists in that folder, yes.
To check for specific files use File.Exists(path)
, which will return a boolean indicating wheter the file at path
exists.
I found a post suggesting a solution for that. It's about to run:
svn resolve --accept working <YourPath>
which will claim the local version files as OK.
You can run it for single file or entire project catalogues.
A few of the options are deprecated as of today. So watch out for those.
If you try <input onkeypress="blockSpecialCharacters(event)" />
, an IDE like WebStorm
will slash out event and tell you:
Deprecated symbol used, consults docs for better alternative
Then when you get to the JavaScript, console.log(e.keyCode)
will also give keyCode and say:
Deprecated symbol used, consults docs for better alternative
Anyways I did it using jQuery.
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.js"></script>
<input id="theInput" />
<script>
function blockSpecialCharacters(e) {
let key = e.key;
let keyCharCode = key.charCodeAt(0);
// 0-9
if(keyCharCode >= 48 && keyCharCode <= 57) {
return key;
}
// A-Z
if(keyCharCode >= 65 && keyCharCode <= 90) {
return key;
}
// a-z
if(keyCharCode >= 97 && keyCharCode <= 122) {
return key;
}
return false;
}
$('#theInput').keypress(function(e) {
blockSpecialCharacters(e);
});
</script>
SQL Views:
View is a virtual table based on the result-set of an SQL statement and that is Stored in the database with some name.
SQL Table:
SQL table is database instance consists of fields (columns), and rows.
Check following post, author listed around seven differences between views and table
Node.js as a background service in WINDOWS XP
Installation:
Create c:\node\helloworld.js
// http://howtonode.org/hello-node
var http = require('http');
var server = http.createServer(function (request, response) {
response.writeHead(200, {"Content-Type": "text/plain"});
response.end("Hello World\n");
});
server.listen(8000);
console.log("Server running at http://127.0.0.1:8000/");
Open command console and type the following (setx only if Resource Kit is installed)
C:\node> set path=%PATH%;%CD%
C:\node> setx path "%PATH%"
C:\node> set NODE_PATH="C:\Program Files\nodejs\node_modules"
C:\node> git config --system http.sslcainfo /bin/curl-ca-bundle.crt
C:\node> git clone --recursive git://github.com/isaacs/npm.git
C:\node> cd npm
C:\node\npm> node cli.js install npm -gf
C:\node> cd ..
C:\node> nssm.exe install node-helloworld "C:\Program Files\nodejs\node.exe" c:\node\helloworld.js
C:\node> net start node-helloworld
A nifty batch goodie is to create c:\node\ServiceMe.cmd
@echo off
nssm.exe install node-%~n1 "C:\Program Files\nodejs\node.exe" %~s1
net start node-%~n1
pause
Service Management:
As others have mentioned, you can use nested functions by using the gnu language extensions in gcc. If you (or your project) sticks to the gcc toolchain, your code will be mostly portable across the different architectures targeted by the gcc compiler.
However, if there is a possible requirement that you might need to compile code with a different toolchain, then I'd stay away from such extensions.
I'd also tread with care when using nested functions. They are a beautiful solution for managing the structure of complex, yet cohesive blocks of code (the pieces of which are not meant for external/general use.) They are also very helpful in controlling namespace pollution (a very real concern with naturally complex/long classes in verbose languages.)
But like anything, they can be open to abuse.
It is sad that C/C++ does not support such features as an standard. Most pascal variants and Ada do (almost all Algol-based languages do). Same with JavaScript. Same with modern languages like Scala. Same with venerable languages like Erlang, Lisp or Python.
And just as with C/C++, unfortunately, Java (with which I earn most of my living) does not.
I mention Java here because I see several posters suggesting usage of classes and class' methods as alternatives to nested functions. And that's also the typical workaround in Java.
Short answer: No.
Doing so tend to introduce artificial, needless complexity on a class hierarchy. With all things being equal, the ideal is to have a class hierarchy (and its encompassing namespaces and scopes) representing an actual domain as simple as possible.
Nested functions help deal with "private", within-function complexity. Lacking those facilities, one should try to avoid propagating that "private" complexity out and into one's class model.
In software (and in any engineering discipline), modeling is a matter of trade-offs. Thus, in real life, there will be justified exceptions to those rules (or rather guidelines). Proceed with care, though.
This is a very common looping idiom. in
is an operator. For when to use for key in dict
and when it must be for key in dict.keys()
see David Goodger's Idiomatic Python article (archived copy).
Another approach in spark 2.1.0
is to use --conf spark.driver.userClassPathFirst=true
during spark-submit which changes the priority of dependency load, and thus the behavior of the spark-job, by giving priority to the jars the user is adding to the class-path with the --jars
option.
The order in which the classes appear in the html element does not matter, what counts is the order in which the blocks appear in the style sheet.
In your case .smallbox-paysummary
is defined after .smallbox
hence the 10px precedence.
Others have pointed out that a get_FOO_display method is what you need. I'm using this:
def get_type(self):
return [i[1] for i in Item._meta.get_field('type').choices if i[0] == self.type][0]
which iterates over all of the choices that a particular item has until it finds the one that matches the items type
Thank for the answers,
The border is removed for Internet Explorer, but this there for Firefox.
So, I added this class to the img
:
.clearBorder{border:none;}
And it worked!
Make sure the value for target (which tells the target android version) in project.properties file of both your project folder and appcompat_v7 folder is same (preferably the latest).
: inside 'your_project'/project.properties
target=android-21
android.library.reference.1=../appcompat_v7
and
: inside appcompat_v7/project.properties
target=android-21
android.library=true
and after this don't forget to clean your project .
Adding this answer here since it provides ability to set non-blocking pipes on Windows and Unix.
All the ctypes
details are thanks to @techtonik's answer.
There is a slightly modified version to be used both on Unix and Windows systems.
This way you can use the same function and exception for Unix and Windows code.
# pipe_non_blocking.py (module)
"""
Example use:
p = subprocess.Popen(
command,
stdout=subprocess.PIPE,
)
pipe_non_blocking_set(p.stdout.fileno())
try:
data = os.read(p.stdout.fileno(), 1)
except PortableBlockingIOError as ex:
if not pipe_non_blocking_is_error_blocking(ex):
raise ex
"""
__all__ = (
"pipe_non_blocking_set",
"pipe_non_blocking_is_error_blocking",
"PortableBlockingIOError",
)
import os
if os.name == "nt":
def pipe_non_blocking_set(fd):
# Constant could define globally but avoid polluting the name-space
# thanks to: https://stackoverflow.com/questions/34504970
import msvcrt
from ctypes import windll, byref, wintypes, WinError, POINTER
from ctypes.wintypes import HANDLE, DWORD, BOOL
LPDWORD = POINTER(DWORD)
PIPE_NOWAIT = wintypes.DWORD(0x00000001)
def pipe_no_wait(pipefd):
SetNamedPipeHandleState = windll.kernel32.SetNamedPipeHandleState
SetNamedPipeHandleState.argtypes = [HANDLE, LPDWORD, LPDWORD, LPDWORD]
SetNamedPipeHandleState.restype = BOOL
h = msvcrt.get_osfhandle(pipefd)
res = windll.kernel32.SetNamedPipeHandleState(h, byref(PIPE_NOWAIT), None, None)
if res == 0:
print(WinError())
return False
return True
return pipe_no_wait(fd)
def pipe_non_blocking_is_error_blocking(ex):
if not isinstance(ex, PortableBlockingIOError):
return False
from ctypes import GetLastError
ERROR_NO_DATA = 232
return (GetLastError() == ERROR_NO_DATA)
PortableBlockingIOError = OSError
else:
def pipe_non_blocking_set(fd):
import fcntl
fl = fcntl.fcntl(fd, fcntl.F_GETFL)
fcntl.fcntl(fd, fcntl.F_SETFL, fl | os.O_NONBLOCK)
return True
def pipe_non_blocking_is_error_blocking(ex):
if not isinstance(ex, PortableBlockingIOError):
return False
return True
PortableBlockingIOError = BlockingIOError
To avoid reading incomplete data, I ended up writing my own readline generator (which returns the byte string for each line).
Its a generator so you can for example...
def non_blocking_readlines(f, chunk=1024):
"""
Iterate over lines, yielding b'' when nothings left
or when new data is not yet available.
stdout_iter = iter(non_blocking_readlines(process.stdout))
line = next(stdout_iter) # will be a line or b''.
"""
import os
from .pipe_non_blocking import (
pipe_non_blocking_set,
pipe_non_blocking_is_error_blocking,
PortableBlockingIOError,
)
fd = f.fileno()
pipe_non_blocking_set(fd)
blocks = []
while True:
try:
data = os.read(fd, chunk)
if not data:
# case were reading finishes with no trailing newline
yield b''.join(blocks)
blocks.clear()
except PortableBlockingIOError as ex:
if not pipe_non_blocking_is_error_blocking(ex):
raise ex
yield b''
continue
while True:
n = data.find(b'\n')
if n == -1:
break
yield b''.join(blocks) + data[:n + 1]
data = data[n + 1:]
blocks.clear()
blocks.append(data)
void foo() {
/* do some stuff */
if (!condition) {
return;
}
}
You can just use the return keyword just like you would in any other function.
Dragon NaturallySpeaking seems to support MP3 input.
If you want an open source version (I think there are some Asterisk integration projects based on this one).
If anyone is interested, you can have the the offset information for all the consumer groups with the following command:
kafka-consumer-groups --bootstrap-server localhost:9092 --all-groups --describe
The parameter --all-groups is available from Kafka 2.4.0
in project's build.gradle
file comment classpath com.android.tools.build:gradle:
. File ? Project Structure select Android Gradle Plugin Version to match Android Studio version
name
field works well. It provides a reference to the elements
.
parent.children
- Will list all elements with a name field of the parent.
parent.elements
- Will list only form elements
such as input-text, text-area, etc
var form = document.getElementById('form-1');_x000D_
console.log(form.children.firstname)_x000D_
console.log(form.elements.firstname)_x000D_
console.log(form.elements.progressBar); // undefined_x000D_
console.log(form.children.progressBar);_x000D_
console.log(form.elements.submit); // undefined
_x000D_
<form id="form-1">_x000D_
<input type="text" name="firstname" />_x000D_
<input type="file" name="file" />_x000D_
<progress name="progressBar" value="20" min="0" max="100" />_x000D_
<textarea name="address"></textarea>_x000D_
<input type="submit" name="submit" />_x000D_
</form>
_x000D_
Note: For .elements
to work, the parent
needs to be a <form> tag
. Whereas, .children
will work on any HTML-element
- such as <div>, <span>, etc
.
Good Luck...
If you need access to your VPN from anywhere in the world you need to register a domain name and have it point to the public ip address of your VPN/network gateway. You could also use a Dynamic DNS service to connect a hostname to your public ip.
If you only need to ssh from your Mac to your Raspberry inside your local network, do this: On your Mac, edit /etc/hosts
. Assuming the Raspberry has hostname "berry" and ip "172.16.0.100", add one line:
# ip hostname
172.16.0.100 berry
Now: ssh user@berry
should work.
Proxies may send a HTTP_X_FORWARDED_FOR
header but even that is optional.
Also keep in mind that visitors may share IP addresses; University networks, large companies and third-world/low-budget ISPs tend to share IPs over many users.
AFAIK you must reformat your String in ISO format to be able to cast it as a Date:
cast(concat(substr(STR_DMY,7,4), '-',
substr(STR_DMY,1,2), '-',
substr(STR_DMY,4,2)
)
as date
) as DT
To display a Date as a String with specific format, then it's the other way around, unless you have Hive 1.2+ and can use date_format()
=> did you check the documentation by the way?
One obvious and straightforward possibility is to use "if-else conditions". In that example
x <- c(1, 2, 4)
y <- c(1, 4, 5)
w <- ifelse(x <= 1, "good", ifelse((x >= 3) & (x <= 5), "bad", "fair"))
data.frame(x, y, w)
** For the additional question in the edit** Is that what you expect ?
> d1 <- c("e", "c", "a")
> d2 <- c("e", "a", "b")
>
> w <- ifelse((d1 == "e") & (d2 == "e"), 1,
+ ifelse((d1=="a") & (d2 == "b"), 2,
+ ifelse((d1 == "e"), 3, 99)))
>
> data.frame(d1, d2, w)
d1 d2 w
1 e e 1
2 c a 99
3 a b 2
If you do not feel comfortable with the ifelse
function, you can also work with the if
and else
statements for such applications.
Completing @chuck answer for using composite indices with foreign keys.
You need to define a property that will hold the value of the foreign key. You can then use this property inside the index definition.
For example, we have company with employees and only we have a unique constraint on (name, company) for any employee:
class Company
{
public Guid Id { get; set; }
}
class Employee
{
public Guid Id { get; set; }
[Required]
public String Name { get; set; }
public Company Company { get; set; }
[Required]
public Guid CompanyId { get; set; }
}
Now the mapping of the Employee class:
class EmployeeMap : EntityTypeConfiguration<Employee>
{
public EmployeeMap ()
{
ToTable("Employee");
Property(p => p.Id)
.HasDatabaseGeneratedOption(DatabaseGeneratedOption.None);
Property(p => p.Name)
.HasUniqueIndexAnnotation("UK_Employee_Name_Company", 0);
Property(p => p.CompanyId )
.HasUniqueIndexAnnotation("UK_Employee_Name_Company", 1);
HasRequired(p => p.Company)
.WithMany()
.HasForeignKey(p => p.CompanyId)
.WillCascadeOnDelete(false);
}
}
Note that I also used @niaher extension for unique index annotation.
Each MAX function is evaluated individually. So MAX(CompletedDate) will return the value of the latest CompletedDate column and MAX(Notes) will return the maximum (i.e. alphabeticaly highest) value.
You need to structure your query differently to get what you want. This question had actually already been asked and answered several times, so I won't repeat it:
How to find the record in a table that contains the maximum value?
//Example to define how to do :
DataTable dt = new DataTable();
dt.Columns.Add("ID");
dt.Columns.Add("FirstName");
dt.Columns.Add("LastName");
dt.Columns.Add("Address");
dt.Columns.Add("City");
// The table structure is:
//ID FirstName LastName Address City
//Now we want to add a PhoneNo column after the LastName column. For this we use the
//SetOrdinal function, as iin:
dt.Columns.Add("PhoneNo").SetOrdinal(3);
//3 is the position number and positions start from 0.`enter code here`
//Now the table structure will be:
// ID FirstName LastName PhoneNo Address City
I solved this problem by changing the data type. If you see the 'Energy Supply per Capita' is a numerical type while the 'Citable docs per Capita' is an object type. I converted the column to float using astype. I had the same problem with some np functions: count_nonzero
and sum
worked while mean
and std
didn't.
When you say you have "clearly set" JAVA_HOME to "C:\Program Files\Java\jdk1.6.0_14" - is that what you see when you run "set" from the command line? I believe Ant will guess at a value for JAVA_HOME if one isn't set at all... is it possible that you've set JAVAHOME instead of JAVA_HOME?
If it's nothing like that, I suggest you edit the ant.bat
batch file (and whatever it calls - I can't remember whether it's convoluted or not offhand) to print out JAVA_HOME at the start and at various other interesting places.
For Spyder 3: In case you don't find Preferences under Tools > Preferences, thats probably because Preferences is pinned onto your tool bar by default Preferences in Tool Bar
If you want to access the string as a non-optional, you should use Ryan's Answer, but if you only care about the non-emptiness of the string, my preferred shorthand for this is
if stringA?.isEmpty == false {
...blah blah
}
Since ==
works fine with optional booleans, I think this leaves the code readable without obscuring the original intention.
If you want to check the opposite: if the string is nil
or ""
, I prefer to check both cases explicitly to show the correct intention:
if stringA == nil || stringA?.isEmpty == true {
...blah blah
}
Based on solution You've already found How to apply CSS to iframe?:
var cssLink = document.createElement("link")
cssLink.href = "file://path/to/style.css";
cssLink .rel = "stylesheet";
cssLink .type = "text/css";
frames['iframe'].document.body.appendChild(cssLink);
or more jqueryish (from Append a stylesheet to an iframe with jQuery):
var $head = $("iframe").contents().find("head");
$head.append($("<link/>",
{ rel: "stylesheet", href: "file://path/to/style.css", type: "text/css" }));
as for security issues: Disabling same-origin policy in Safari
yourToolTip = new ToolTip();
//The below are optional, of course,
yourToolTip.ToolTipIcon = ToolTipIcon.Info;
yourToolTip.IsBalloon = true;
yourToolTip.ShowAlways = true;
yourToolTip.SetToolTip(lblYourLabel,"Oooh, you put your mouse over me.");
One way is to wrap the array in java.nio.ByteBuffer
, use the absolute put/get functions, and slice the buffer to work on a subarray.
For instance:
doSomething(ByteBuffer twoBytes) {
byte b1 = twoBytes.get(0);
byte b2 = twoBytes.get(1);
...
}
void someMethod(byte[] bigArray) {
int offset = 4;
int length = 2;
doSomething(ByteBuffer.wrap(bigArray, offset, length).slice());
}
Note that you have to call both wrap()
and slice()
, since wrap()
by itself only affects the relative put/get functions, not the absolute ones.
ByteBuffer
can be a bit tricky to understand, but is most likely efficiently implemented, and well worth learning.
If you call this function then you easily get the client's IP address. I have already used this in my existing project:
public function getUserIpAddr(){
$ipaddress = '';
if (isset($_SERVER['HTTP_CLIENT_IP']))
$ipaddress = $_SERVER['HTTP_CLIENT_IP'];
else if(isset($_SERVER['HTTP_X_FORWARDED_FOR']))
$ipaddress = $_SERVER['HTTP_X_FORWARDED_FOR'];
else if(isset($_SERVER['HTTP_X_FORWARDED']))
$ipaddress = $_SERVER['HTTP_X_FORWARDED'];
else if(isset($_SERVER['HTTP_FORWARDED_FOR']))
$ipaddress = $_SERVER['HTTP_FORWARDED_FOR'];
else if(isset($_SERVER['HTTP_FORWARDED']))
$ipaddress = $_SERVER['HTTP_FORWARDED'];
else if(isset($_SERVER['REMOTE_ADDR']))
$ipaddress = $_SERVER['REMOTE_ADDR'];
else
$ipaddress = 'UNKNOWN';
return $ipaddress;
}
java .... than debug.. or Remove the 'import R.java' line from your code. Its done by Eclipse in order to solve the problem. Go to "note_edit.xml" file. Wherever you find "match_parent" as an attribute value, replace it with either "fill_parent" or "wrap_content". Do a clean build. R.java will be generated automatically
Solution in ES6/TypeScript:
let d = new Date;
console.log(d, [`${d.getFullYear()}`, `0${d.getMonth()}`.substr(-2), `0${d.getDate()}`.substr(-2)].join("-"));
AStyle can be customized in great detail for C++ and Java (and others too)
This is a source code formatting tool.
clang-format is a powerful command line tool bundled with the clang compiler which handles even the most obscure language constructs in a coherent way.
It can be integrated with Visual Studio, Emacs, Vim (and others) and can format just the selected lines (or with git/svn to format some diff).
It can be configured with a variety of options listed here.
When using config files (named .clang-format
) styles can be per directory - the closest such file in parent directories shall be used for a particular file.
Styles can be inherited from a preset (say LLVM or Google) and can later override different options
It is used by Google and others and is production ready.
Also look at the project UniversalIndentGUI. You can experiment with several indenters using it: AStyle, Uncrustify, GreatCode, ... and select the best for you. Any of them can be run later from a command line.
Uncrustify has a lot of configurable options. You'll probably need Universal Indent GUI (in Konstantin's reply) as well to configure it.
You may find it easier to loop over your array and build a new array out of the items you want to keep from the array than by trying to loop and splice as has been suggested, since modifying the length of the array while it is being looped over can introduce problems.
You could do something like this:
function removeFalsyElementsFromArray(someArray) {
var newArray = [];
for(var index = 0; index < someArray.length; index++) {
if(someArray[index]) {
newArray.push(someArray[index]);
}
}
return newArray;
}
Actually here is a more generic solution:
function removeElementsFromArray(someArray, filter) {
var newArray = [];
for(var index = 0; index < someArray.length; index++) {
if(filter(someArray[index]) == false) {
newArray.push(someArray[index]);
}
}
return newArray;
}
// then provide one or more filter functions that will
// filter out the elements based on some condition:
function isNullOrUndefined(item) {
return (item == null || typeof(item) == "undefined");
}
// then call the function like this:
var myArray = [1,2,,3,,3,,,,,,4,,4,,5,,6,,,,];
var results = removeElementsFromArray(myArray, isNullOrUndefined);
// results == [1,2,3,3,4,4,5,6]
You get the idea - you could then have other types of filter functions. Probably more than you need, but I was feeling generous... ;)
If IsNull({TABLE.FIELD1}) then "NULL" +',' + {TABLE.FIELD2} else {TABLE.FIELD1} + ', ' + {TABLE.FIELD2}
Here I put NULL as string to display the string value NULL in place of the null value in the data field. Hope you understand.
word-wrap: break-word;
add this to your container that should do the trick
is
compares identity. A string will never be identical to a not-string.
==
is equality. But a string will never be equal to either True
or False
.
You want neither.
path = '/bla/bla/bla'
if path:
print "True"
else:
print "False"
The App_Data folder is a folder, which your asp.net worker process has files sytem rights too, but isn't published through the web server.
For example we use it to update a local CSV of a contact us form. If the preferred method of emails fails or any querying of the data source is required, the App_Data files are there.
It's not ideal, but it it's a good fall-back.
It is just letting you know that the object you are printing is not a string, rather a byte object as a byte literal. People explain this in incomplete ways, so here is my take.
Consider creating a byte object by typing a byte literal (literally defining a byte object without actually using a byte object e.g. by typing b'') and converting it into a string object encoded in utf-8. (Note that converting here means decoding)
byte_object= b"test" # byte object by literally typing characters
print(byte_object) # Prints b'test'
print(byte_object.decode('utf8')) # Prints "test" without quotations
You see that we simply apply the .decode(utf8)
function.
https://docs.python.org/3.3/library/stdtypes.html#bytes
https://docs.python.org/3.3/reference/lexical_analysis.html#string-and-bytes-literals
stringliteral ::= [stringprefix](shortstring | longstring)
stringprefix ::= "r" | "u" | "R" | "U"
shortstring ::= "'" shortstringitem* "'" | '"' shortstringitem* '"'
longstring ::= "'''" longstringitem* "'''" | '"""' longstringitem* '"""'
shortstringitem ::= shortstringchar | stringescapeseq
longstringitem ::= longstringchar | stringescapeseq
shortstringchar ::= <any source character except "\" or newline or the quote>
longstringchar ::= <any source character except "\">
stringescapeseq ::= "\" <any source character>
bytesliteral ::= bytesprefix(shortbytes | longbytes)
bytesprefix ::= "b" | "B" | "br" | "Br" | "bR" | "BR" | "rb" | "rB" | "Rb" | "RB"
shortbytes ::= "'" shortbytesitem* "'" | '"' shortbytesitem* '"'
longbytes ::= "'''" longbytesitem* "'''" | '"""' longbytesitem* '"""'
shortbytesitem ::= shortbyteschar | bytesescapeseq
longbytesitem ::= longbyteschar | bytesescapeseq
shortbyteschar ::= <any ASCII character except "\" or newline or the quote>
longbyteschar ::= <any ASCII character except "\">
bytesescapeseq ::= "\" <any ASCII character>
I believe that the problem is that the WebRequest
measures the time only after the request is actually made. If you submit multiple requests to the same address then the ServicePointManager
will throttle your requests and only actually submit as many concurrent connections as the value of the corresponding ServicePoint.ConnectionLimit
which by default gets the value from ServicePointManager.DefaultConnectionLimit
. Application CLR host sets this to 2, ASP host to 10. So if you have a multithreaded application that submits multiple requests to the same host only two are actually placed on the wire, the rest are queued up.
I have not researched this to a conclusive evidence whether this is what really happens, but on a similar project I had things were horrible until I removed the ServicePoint
limitation.
Another factor to consider is the DNS lookup time. Again, is my belief not backed by hard evidence, but I think the WebRequest
does not count the DNS lookup time against the request timeout. DNS lookup time can show up as very big time factor on some deployments.
And yes, you must code your app around the WebRequest.BeginGetRequestStream
(for POST
s with content) and WebRequest.BeginGetResponse
(for GET
s and POSTS
s). Synchronous calls will not scale (I won't enter into details why, but that I do have hard evidence for). Anyway, the ServicePoint
issue is orthogonal to this: the queueing behavior happens with async calls too.
SpringBoot is actually pre configured that reduced boiler configuration and providing easiest or quick way to start your application.
SpringBoot take the headache of configuration from developer to it's own self rather than Spring.
Implicitly SpringBoot is based on Spring framework concept like bean, controller , services, jpa etc.
You can say that SpringBoot is a wrapper of Spring.
In SpringBoot by default port of Server is 8080 but if you want to change then go to your application.properties and write
server.port = 8084
If you want to add a new record in the form
newRecord = [4L, 1L, u'DDD', 1689544L, datetime.datetime(2010, 9, 21, 21, 45), u'jhhjjh']
to messageName
where messageName
in the form X_somemessage
can, but does not have to be in your dictionary, then do it this way:
myDict.setdefault(messageName, []).append(newRecord)
This way it will be appended to an existing messageName
or a new list will be created for a new messageName
.
We have no control over the size of an enum
variable. It totally depends on the implementation, and the compiler gives the option to store a name for an integer using enum
, so enum
is following the size of an integer.
Use the valgrind option --track-origins=yes
to have it track the origin of uninitialized values. This will make it slower and take more memory, but can be very helpful if you need to track down the origin of an uninitialized value.
Update: Regarding the point at which the uninitialized value is reported, the valgrind manual states:
It is important to understand that your program can copy around junk (uninitialised) data as much as it likes. Memcheck observes this and keeps track of the data, but does not complain. A complaint is issued only when your program attempts to make use of uninitialised data in a way that might affect your program's externally-visible behaviour.
From the Valgrind FAQ:
As for eager reporting of copies of uninitialised memory values, this has been suggested multiple times. Unfortunately, almost all programs legitimately copy uninitialised memory values around (because compilers pad structs to preserve alignment) and eager checking leads to hundreds of false positives. Therefore Memcheck does not support eager checking at this time.
finally I got the solution:
Only put this line
@RequestMapping(value = "/YOUR_URL_Name",method = RequestMethod.POST,produces = "application/json; charset=utf-8")
this will definitely help.
for use sample touch listener just you need this code
@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
ClipData data = ClipData.newPlainText("", "");
View.DragShadowBuilder shadowBuilder = new View.DragShadowBuilder(view);
view.startDrag(data, shadowBuilder, null, 0);
return true;
}
Use the following command outside the WEB-INF folder. This should create your war file and is the quickest method I know.
(You will need JDK 1.7+ installed and environment variables that point to the bin directory of your JDK.)
jar -cvf projectname.war *
I like this for a simple check from the shell:
mysql -p<password> -D<database> -B -e "SHOW TABLES LIKE 'User%'" \
| awk 'NR != 1 {print "CHECK TABLE "$1";"}' \
| mysql -p<password> -D<database>
start = datetime.now()
#code for which response time need to be measured.
end = datetime.now()
dif = end - start
dif_micro = dif.microseconds # time in microseconds
dif_millis = dif.microseconds / 1000 # time in millisseconds
Try the following:
Paint textPaint = new Paint();
textPaint.setTextAlign(Paint.Align.CENTER);
int xPos = (canvas.getWidth() / 2);
int yPos = (int) ((canvas.getHeight() / 2) - ((textPaint.descent() + textPaint.ascent()) / 2)) ;
//((textPaint.descent() + textPaint.ascent()) / 2) is the distance from the baseline to the center.
canvas.drawText("Hello", xPos, yPos, textPaint);
Immediately after your execute statement you can have an if statement. For example
ResultSet rs = statement.execute();
if (!rs.next()){
//ResultSet is empty
}
In Android Studio 2.3.3 I was able to get my AVD to start and run by changing Graphics
in the Emulated Performance
section from Automatic
to Software-GLES 2.0
:
I was able to infer this after following the advice at https://stackoverflow.com/a/44931679/1843329 and doing:
$ ./emulator -avd Nexus_4_API_21 -use-system-libs
which resulted in:
emulator: ERROR: Could not initialize OpenglES emulation, use '-gpu off' to disable it.
And when I did:
./emulator -avd Nexus_4_API_21 -use-system-libs -gpu off
the emulator then launched.
Depending on your use case, all the above solutions apply. This is how i usually do it however :
For server side code (e.g. a batch process) I usually load the entities and work with dynamic proxies. Usually in batch processes you need to load the data anyways at the time the service runs. I try to batch load the data instead of using the find method to save some time. Depending on the process I use optimistic or pessimistic concurrency control (I always use optimistic except for parallel execution scenarios where I need to lock some records with plain sql statements, this is rare though). Depending on the code and scenario the impact can be reduced to almost zero.
For client side scenarios, you have a few options
Use view models. The models should have a property UpdateStatus(unmodified-inserted-updated-deleted). It is the responsibility of the client to set the correct value to this column depending on the user actions (insert-update-delete). The server can either query the db for the original values or the client should send the original values to the server along with the changed rows. The server should attach the original values and use the UpdateStatus column for each row to decide how to handle the new values. In this scenario I always use optimistic concurrency. This will only do the insert - update - delete statements and not any selects, but it might need some clever code to walk the graph and update the entities (depends on your scenario - application). A mapper can help but does not handle the CRUD logic
Use a library like breeze.js that hides most of this complexity (as described in 1) and try to fit it to your use case.
Hope it helps