2 ways:-
1st one Custom Query
@Modifying
@Query("delete from User where firstName = :firstName")
void deleteUsersByFirstName(@Param("firstName") String firstName);
2nd one JPA Query by method
List<User> deleteByLastname(String lastname);
When you go with query by method (2nd way) it will first do a get call
select * from user where last_name = :firstName
Then it will load it in a List Then it will call delete id one by one
delete from user where id = 18
delete from user where id = 19
First fetch list of object, then for loop to delete id one by one
But, the 1st option (custom query),
It's just a single query It will delete wherever the value exists.
Go through this link too https://www.baeldung.com/spring-data-jpa-deleteby
I had a look at multiple answers across stack overflow and the web while trying to set-up a way of doing multiprocessing using queues for passing around large pandas dataframes. It seemed to me that every answer was re-iterating the same kind of solutions without any consideration of the multitude of edge cases one will definitely come across when setting up calculations like these. The problem is that there is many things at play at the same time. The number of tasks, the number of workers, the duration of each task and possible exceptions during task execution. All of these make synchronization tricky and most answers do not address how you can go about it. So this is my take after fiddling around for a few hours, hopefully this will be generic enough for most people to find it useful.
Some thoughts before any coding examples. Since queue.Empty
or queue.qsize()
or any other similar method is unreliable for flow control, any code of the like
while True:
try:
task = pending_queue.get_nowait()
except queue.Empty:
break
is bogus. This will kill the worker even if milliseconds later another task turns up in the queue. The worker will not recover and after a while ALL the workers will disappear as they randomly find the queue momentarily empty. The end result will be that the main multiprocessing function (the one with the join() on the processes) will return without all the tasks having completed. Nice. Good luck debugging through that if you have thousands of tasks and a few are missing.
The other issue is the use of sentinel values. Many people have suggested adding a sentinel value in the queue to flag the end of the queue. But to flag it to whom exactly? If there is N workers, assuming N is the number of cores available give or take, then a single sentinel value will only flag the end of the queue to one worker. All the other workers will sit waiting for more work when there is none left. Typical examples I've seen are
while True:
task = pending_queue.get()
if task == SOME_SENTINEL_VALUE:
break
One worker will get the sentinel value while the rest will wait indefinitely. No post I came across mentioned that you need to submit the sentinel value to the queue AT LEAST as many times as you have workers so that ALL of them get it.
The other issue is the handling of exceptions during task execution. Again these should be caught and managed. Moreover, if you have a completed_tasks
queue you should independently count in a deterministic way how many items are in the queue before you decide that the job is done. Again relying on queue sizes is bound to fail and returns unexpected results.
In the example below, the par_proc()
function will receive a list of tasks including the functions with which these tasks should be executed alongside any named arguments and values.
import multiprocessing as mp
import dill as pickle
import queue
import time
import psutil
SENTINEL = None
def do_work(tasks_pending, tasks_completed):
# Get the current worker's name
worker_name = mp.current_process().name
while True:
try:
task = tasks_pending.get_nowait()
except queue.Empty:
print(worker_name + ' found an empty queue. Sleeping for a while before checking again...')
time.sleep(0.01)
else:
try:
if task == SENTINEL:
print(worker_name + ' no more work left to be done. Exiting...')
break
print(worker_name + ' received some work... ')
time_start = time.perf_counter()
work_func = pickle.loads(task['func'])
result = work_func(**task['task'])
tasks_completed.put({work_func.__name__: result})
time_end = time.perf_counter() - time_start
print(worker_name + ' done in {} seconds'.format(round(time_end, 5)))
except Exception as e:
print(worker_name + ' task failed. ' + str(e))
tasks_completed.put({work_func.__name__: None})
def par_proc(job_list, num_cpus=None):
# Get the number of cores
if not num_cpus:
num_cpus = psutil.cpu_count(logical=False)
print('* Parallel processing')
print('* Running on {} cores'.format(num_cpus))
# Set-up the queues for sending and receiving data to/from the workers
tasks_pending = mp.Queue()
tasks_completed = mp.Queue()
# Gather processes and results here
processes = []
results = []
# Count tasks
num_tasks = 0
# Add the tasks to the queue
for job in job_list:
for task in job['tasks']:
expanded_job = {}
num_tasks = num_tasks + 1
expanded_job.update({'func': pickle.dumps(job['func'])})
expanded_job.update({'task': task})
tasks_pending.put(expanded_job)
# Use as many workers as there are cores (usually chokes the system so better use less)
num_workers = num_cpus
# We need as many sentinels as there are worker processes so that ALL processes exit when there is no more
# work left to be done.
for c in range(num_workers):
tasks_pending.put(SENTINEL)
print('* Number of tasks: {}'.format(num_tasks))
# Set-up and start the workers
for c in range(num_workers):
p = mp.Process(target=do_work, args=(tasks_pending, tasks_completed))
p.name = 'worker' + str(c)
processes.append(p)
p.start()
# Gather the results
completed_tasks_counter = 0
while completed_tasks_counter < num_tasks:
results.append(tasks_completed.get())
completed_tasks_counter = completed_tasks_counter + 1
for p in processes:
p.join()
return results
And here is a test to run the above code against
def test_parallel_processing():
def heavy_duty1(arg1, arg2, arg3):
return arg1 + arg2 + arg3
def heavy_duty2(arg1, arg2, arg3):
return arg1 * arg2 * arg3
task_list = [
{'func': heavy_duty1, 'tasks': [{'arg1': 1, 'arg2': 2, 'arg3': 3}, {'arg1': 1, 'arg2': 3, 'arg3': 5}]},
{'func': heavy_duty2, 'tasks': [{'arg1': 1, 'arg2': 2, 'arg3': 3}, {'arg1': 1, 'arg2': 3, 'arg3': 5}]},
]
results = par_proc(task_list)
job1 = sum([y for x in results if 'heavy_duty1' in x.keys() for y in list(x.values())])
job2 = sum([y for x in results if 'heavy_duty2' in x.keys() for y in list(x.values())])
assert job1 == 15
assert job2 == 21
plus another one with some exceptions
def test_parallel_processing_exceptions():
def heavy_duty1_raises(arg1, arg2, arg3):
raise ValueError('Exception raised')
return arg1 + arg2 + arg3
def heavy_duty2(arg1, arg2, arg3):
return arg1 * arg2 * arg3
task_list = [
{'func': heavy_duty1_raises, 'tasks': [{'arg1': 1, 'arg2': 2, 'arg3': 3}, {'arg1': 1, 'arg2': 3, 'arg3': 5}]},
{'func': heavy_duty2, 'tasks': [{'arg1': 1, 'arg2': 2, 'arg3': 3}, {'arg1': 1, 'arg2': 3, 'arg3': 5}]},
]
results = par_proc(task_list)
job1 = sum([y for x in results if 'heavy_duty1' in x.keys() for y in list(x.values())])
job2 = sum([y for x in results if 'heavy_duty2' in x.keys() for y in list(x.values())])
assert not job1
assert job2 == 21
Hope that is helpful.
You just had some messed up parentheses in your 2nd attempt.
var $html = $("html");
if ($html.hasClass('m320') || $html.hasClass('m768')) {
// do stuff
}
Simply go here: https://dev.twitter.com/apps/new Make sure you have logged in with your Twitter account - then create - even if your just entering random (Test) Content - create your app - afterwards you will receive all the data you require :)
The approach I would take is: when reading the chapters from the database, instead of a collection of chapters, use a collection of books. This will have your chapters organised into books and you'll be able to use information from both classes to present the information to the user (you can even present it in a hierarchical way easily when using this approach).
GOTCHA: If you are having trouble with any of the many-starred suggestions, ensure that you are registering your UITableViewCell
s in viewDidLoad()
, not from init()
$(document).ready(function(){
var jsonObj = [{'Id':'1','Username':'Ray','FatherName':'Thompson'},
{'Id':'2','Username':'Steve','FatherName':'Johnson'},
{'Id':'3','Username':'Albert','FatherName':'Einstein'}];
$.each(jsonObj,function(i,v){
if (v.Id == 3) {
v.Username = "Thomas";
return false;
}
});
alert("New Username: " + jsonObj[2].Username);
});
Run:
in Ubuntu/linux
sudo rm /var/www/html/rails/WBPOCTEST/tmp/pids/server.pid
Or
pkill -9 ruby
or
lsof -wni tcp:3000
kill -9 pid
Learn about CORS, try crossorigin.me
is work fine
Example: https://crossorigin.me/https://fr.s.us/js/jquery-ui.css
Not show a message error and continue page white, u need see error is try
http://cors.io/?u=https://fr.s.us/js/jquery-ui.css
enjoin us ;-)
I had many issues involving C# and SqlServer. I ended up doing the following:
Also make sure that all your machines run on the same timezone.
Regarding the different result sets you get, your first example is "July First" while the second is "4th of July" ...
Also, the second example can be also interpreted as "April 7th", it depends on your server localization configuration (my solution doesn't suffer from this issue).
EDIT: hh was replaced with HH, as it doesn't seem to capture the correct hour on systems with AM/PM as opposed to systems with 24h clock. See the comments below.
short way, you can use Ternary Operators
$filename = !empty($_POST['filename'])?$_POST['filename']:'-';
shape
is a property of both numpy ndarray's and matrices.
A.shape
will return a tuple (m, n), where m is the number of rows, and n is the number of columns.
In fact, the numpy matrix
object is built on top of the ndarray
object, one of numpy's two fundamental objects (along with a universal function object), so it inherits from ndarray
Yes, it is possible to create an unsigned .apk with Android Studio!
Highlight the Project in your package explorer or project column, and then File
- Project Structure
- Artifacts
- +
- Android Application
- From module 'your app'
and then you can change the location and some other options. I enable build on make, just for ease.
I have a set of 15 subroutines I add to every Coded Excel Workbook I create and this is one of them. The following routine clears the area and creates a border.
Sample Call:
Call BoxIt(Range("A1:z25"))
Subroutine:
Sub BoxIt(aRng As Range)
On Error Resume Next
With aRng
'Clear existing
.Borders.LineStyle = xlNone
'Apply new borders
.BorderAround xlContinuous, xlThick, 0
With .Borders(xlInsideVertical)
.LineStyle = xlContinuous
.ColorIndex = 0
.Weight = xlMedium
End With
With .Borders(xlInsideHorizontal)
.LineStyle = xlContinuous
.ColorIndex = 0
.Weight = xlMedium
End With
End With
End Sub
If you have a built-in command of GridView like insert, update or delete, on row command you can use the following code to get the index:
int index = Convert.ToInt32(e.CommandArgument);
In a custom command, you can set the command argument to yourRow.RowIndex.ToString()
and then get it back in the RowCommand event handler. Unless, of course, you need the command argument for another purpose.
I just want to put my view
So you need to create a generic Return type and implemented by different types of concret return types. The Service class can create different types of objects concrete class and return as a generic type.
public interface GenericReturnType{
public static RETURN_TYPE enum{
MACHINE, PERSON;
}
public RETURN_TYPE getReturnType();
}
public class PersonReturnType implements GenericReturnType{
// CONSTRUCTORS //
// GETTRE AND SETTER //
public RETURN_TYPE getReturnType(){
return PERSON;
}
public String getAddress(){
return something;
}
}
public class MachineReturnType implements GenericReturnType{
// CONSTRUCTORS //
// GETTRE AND SETTER //
public RETURN_TYPE getReturnType(){
return MACHINE;
}
public String getManufatureName(){
return something;
}
}
public class TestService{
public GenericReturnType getObject(// some input //){
GenericReturnType obj ;
if(// some code //){
obj = new PersonReturnType();
// some code //
}
if(// some code //){
obj = new MachineReturnType();
// some code //
}
return obj;
}
}
public class TestDriver{
TestService service = new TestService();
GenericReturnType genObj = TestService.getObject(// some input //);
if(genObj.getReturnType() == RETURN_TYPE.MACHINE){
// SOME CODE //
}
if(genObj.getReturnType() == RETURN_TYPE.PERSON){
// SOME CODE //
}
}
Use p{width}
column specifier: e.g. \begin{tabular}{ l p{10cm} }
will put column's content into 10cm-wide parbox, and the text will be properly broken to several lines, like in normal paragraph.
You can also use tabular*
environment to specify width for the entire table.
require('url').parse('/status?name=ryan', {parseQueryString: true}).query
returns
{ name: 'ryan' }
delete node_modules/browserslist
directory in the project
now
npm run build
no longer generates that message
You can use this.setResizable(false);
or frameObject.setResizable(false);
on unix vim --version
tells you the various locations of the vim config files :
system vimrc file: "$VIM/vimrc"
user vimrc file: "$HOME/.vimrc"
2nd user vimrc file: "~/.vim/vimrc"
user exrc file: "$HOME/.exrc"
defaults file: "$VIMRUNTIME/defaults.vim"
fall-back for $VIM: "/usr/share/vim"
Try this:
DateTime date = DateTime.ParseExact(
"Tue, 1 Jan 2008 00:00:00 UTC",
"ddd, d MMM yyyy HH:mm:ss UTC",
CultureInfo.InvariantCulture);
If you are using reactive forms in Angular 2+, you can remove leading and trailing spaces with the help of (blur)
app.html
<input(blur)="trimLeadingAndTrailingSpaces(myForm.controls['firstName'])" formControlName="firstName" />
app.ts
public trimLeadingAndTrailingSpaces(formControl: AbstractControl) {
if (formControl && formControl.value && typeof formControl.value === 'string') {
formControl.setValue(formControl.value.trim());
}
}
I know this is old, but just thought I would add my solution just in case someone finds it useful.
I wanted to compare the local naive datetime with an aware datetime from a timeserver. I basically created a new naive datetime object using the aware datetime object. It's a bit of a hack and doesn't look very pretty but gets the job done.
import ntplib
import datetime
from datetime import timezone
def utc_to_local(utc_dt):
return utc_dt.replace(tzinfo=timezone.utc).astimezone(tz=None)
try:
ntpt = ntplib.NTPClient()
response = ntpt.request('pool.ntp.org')
date = utc_to_local(datetime.datetime.utcfromtimestamp(response.tx_time))
sysdate = datetime.datetime.now()
...here comes the fudge...
temp_date = datetime.datetime(int(str(date)[:4]),int(str(date)[5:7]),int(str(date)[8:10]),int(str(date)[11:13]),int(str(date)[14:16]),int(str(date)[17:19]))
dt_delta = temp_date-sysdate
except Exception:
print('Something went wrong :-(')
What is monkey patching? Monkey patching is a technique used to dynamically update the behavior of a piece of code at run-time.
Why use monkey patching? It allows us to modify or extend the behavior of libraries, modules, classes or methods at runtime without actually modifying the source code
Conclusion Monkey patching is a cool technique and now we have learned how to do that in Python. However, as we discussed, it has its own drawbacks and should be used carefully.
For more info Please refer [1]: https://medium.com/@nagillavenkatesh1234/monkey-patching-in-python-explained-with-examples-25eed0aea505
Converting to datetime64[D]
:
df.dates.values.astype('M8[D]')
Though re-assigning that to a DataFrame col will revert it back to [ns].
If you wanted actual datetime.date
:
dt = pd.DatetimeIndex(df.dates)
dates = np.array([datetime.date(*date_tuple) for date_tuple in zip(dt.year, dt.month, dt.day)])
Some of the basic data structures in programming languages such as C and C++ are stacks and queues.
The stack data structure follows the "First In Last Out" policy (FILO) where the first element inserted or "pushed" into a stack is the last element that is removed or "popped" from the stack.
Similarly, a queue data structure follows a "First In First Out" policy (as in the case of a normal queue when we stand in line at the counter), where the first element is pushed into the queue or "Enqueued" and the same element when it has to be removed from the queue is "Dequeued".
This is quite similar to push and pop in a stack, but the terms enqueue and dequeue avoid confusion as to whether the data structure in use is a stack or a queue.
Class coders has a simple program to demonstrate the enqueue and dequeue process. You could check it out for reference.
http://classcoders.blogspot.in/2012/01/enque-and-deque-in-c.html
If you want to check **kwargs
, *args
as well as normal arguments in one go, you can use the locals()
function as the first statement in your function definition to get a dictionary of the arguments.
Then use type()
to examine the arguments, for example whilst iterating over the dict.
def myfunc(my, args, to, this, function, **kwargs):
d = locals()
assert(type(d.get('x')) == str)
for x in d:
if x != 'x':
assert(type(d[x]) == x
for x in ['a','b','c']:
assert(x in d)
whatever more...
#!/usr/bin/env python
import sys
import yaml
def main(argv):
with open(argv[0]) as stream:
try:
#print(yaml.load(stream))
return 0
except yaml.YAMLError as exc:
print(exc)
return 1
if __name__ == "__main__":
sys.exit(main(sys.argv[1:]))
It's possible to use a udev rule to let the system decide on the scheduler based on some characteristics of the hw.
An example udev rule for SSDs and other non-rotational drives might look like
# set noop scheduler for non-rotating disks
ACTION=="add|change", KERNEL=="sd[a-z]", ATTR{queue/rotational}=="0", ATTR{queue/scheduler}="noop"
inside a new udev rules file (e.g., /etc/udev/rules.d/60-ssd-scheduler.rules
). This answer is based on the debian wiki
To check whether ssd disks would use the rule, it's possible to check for the trigger attribute in advance:
for f in /sys/block/sd?/queue/rotational; do printf "$f "; cat $f; done
Try to implement dynamic data structure such as a linked list
Open Ports Scanner works for me.
I had the same error but was caused by a different issue.
The credentials were changed on AWS but I was still using a cached MFA session token for the config profile.
There is a cache file for each profile under ~/.aws/cli/cache/
containing the session token.
Remove the cache file, reissue the command and enter a new MFA token and its good to go.
I also had the same issue, I solved the problem by adding a ng-submit which sets the variable submitted to true.
<form name="form" ng-submit="submitted = true" novalidate>
<div>
<span ng-if="submitted && form.email.$error.email">invalid email address</span>
<span ng-if="submitted && form.email.$error.required">required</span>
<label>email</label>
<input type="email" name="email" ng-model="user.email" required>
</div>
<div>
<span ng-if="submitted && form.name.$error.required">required</span>
<label>name</label>
<input type="text" name="name" ng-model="user.name" required>
</div>
<button ng-click="form.$valid && save(user)">Save</button>
</form>
I like the idea of using $submitted, I think I've to upgrade Angular to 1.3 ;)
You have basically two options:
export TESTVARIABLE
) before executing the 2nd script.. test2.sh
and it will run in the same shell. This would let you share more complex variables like arrays easily, but also means that the other script could modify variables in the source shell.UPDATE:
To use export
to set an environment variable, you can either use an existing variable:
A=10
# ...
export A
This ought to work in both bash
and sh
. bash
also allows it to be combined like so:
export A=10
This also works in my sh
(which happens to be bash
, you can use echo $SHELL
to check). But I don't believe that that's guaranteed to work in all sh
, so best to play it safe and separate them.
Any variable you export in this way will be visible in scripts you execute, for example:
a.sh:
#!/bin/sh
MESSAGE="hello"
export MESSAGE
./b.sh
b.sh:
#!/bin/sh
echo "The message is: $MESSAGE"
Then:
$ ./a.sh
The message is: hello
The fact that these are both shell scripts is also just incidental. Environment variables can be passed to any process you execute, for example if we used python instead it might look like:
a.sh:
#!/bin/sh
MESSAGE="hello"
export MESSAGE
./b.py
b.py:
#!/usr/bin/python
import os
print 'The message is:', os.environ['MESSAGE']
Sourcing:
Instead we could source like this:
a.sh:
#!/bin/sh
MESSAGE="hello"
. ./b.sh
b.sh:
#!/bin/sh
echo "The message is: $MESSAGE"
Then:
$ ./a.sh
The message is: hello
This more or less "imports" the contents of b.sh
directly and executes it in the same shell. Notice that we didn't have to export the variable to access it. This implicitly shares all the variables you have, as well as allows the other script to add/delete/modify variables in the shell. Of course, in this model both your scripts should be the same language (sh
or bash
). To give an example how we could pass messages back and forth:
a.sh:
#!/bin/sh
MESSAGE="hello"
. ./b.sh
echo "[A] The message is: $MESSAGE"
b.sh:
#!/bin/sh
echo "[B] The message is: $MESSAGE"
MESSAGE="goodbye"
Then:
$ ./a.sh
[B] The message is: hello
[A] The message is: goodbye
This works equally well in bash
. It also makes it easy to share more complex data which you could not express as an environment variable (at least without some heavy lifting on your part), like arrays or associative arrays.
To answer this question specifically, two problems:
$randstring
is not in scope when you echo it.Here's a code snippet with the corrections:
function generateRandomString($length = 10) {
$characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
$charactersLength = strlen($characters);
$randomString = '';
for ($i = 0; $i < $length; $i++) {
$randomString .= $characters[rand(0, $charactersLength - 1)];
}
return $randomString;
}
Output the random string with the call below:
// Echo the random string.
// Optionally, you can give it a desired string length.
echo generateRandomString();
Please note that this generates predictable random strings. If you want to create secure tokens, see this answer.
The problem here seems to be that you're reassigning $today
by assigning a string to it:
$today = $dd+'/'+$mm+'/'+$yyyy;
Strings don't have getDate
.
Also, $today.getDate()-1
just gives you the day of the month minus one; it doesn't give you the full date of 'yesterday'. Try this:
$today = new Date();
$yesterday = new Date($today);
$yesterday.setDate($today.getDate() - 1); //setDate also supports negative values, which cause the month to rollover.
Then just apply the formatting code you wrote:
var $dd = $yesterday.getDate();
var $mm = $yesterday.getMonth()+1; //January is 0!
var $yyyy = $yesterday.getFullYear();
if($dd<10){$dd='0'+$dd} if($mm<10){$mm='0'+$mm} $yesterday = $dd+'/'+$mm+'/'+$yyyy;
Because of the last statement, $yesterday
is now a String
(not a Date
) containing the formatted date.
I was playing around with this solution to maintain consistency throughout the app:
def bootstrap_django_fields(field_klass, css_class):
class Wrapper(field_klass):
def __init__(self, **kwargs):
super().__init__(**kwargs)
def widget_attrs(self, widget):
attrs = super().widget_attrs(widget)
if not widget.is_hidden:
attrs["class"] = css_class
return attrs
return Wrapper
MyAppCharField = bootstrap_django_fields(forms.CharField, "form-control")
Then you don't have to define your css classes on a form by form basis, just use your custom form field.
It's also technically possible to redefine Django's forms
classes on startup like so:
forms.CharField = bootstrap_django_fields(forms.CharField, "form-control")
Then you could set the styling globally even for apps not in your direct control. This seems pretty sketchy, so I am not sure if I can recommend this.
You can use
a.Except(b).Union(b.Except(a));
Or you can use
var difference = new HashSet(a);
difference.SymmetricExceptWith(b);
I created a global define with more information:
#include <iostream>
#include <ctime>
#include <iomanip>
#define __FILENAME__ (__builtin_strrchr(__FILE__, '/') ? __builtin_strrchr(__FILE__, '/') + 1 : __FILE__) // only show filename and not it's path (less clutter)
#define INFO std::cout << std::put_time(std::localtime(&time_now), "%y-%m-%d %OH:%OM:%OS") << " [INFO] " << __FILENAME__ << "(" << __FUNCTION__ << ":" << __LINE__ << ") >> "
#define ERROR std::cout << std::put_time(std::localtime(&time_now), "%y-%m-%d %OH:%OM:%OS") << " [ERROR] " << __FILENAME__ << "(" << __FUNCTION__ << ":" << __LINE__ << ") >> "
static std::time_t time_now = std::time(nullptr);
Use it like this:
INFO << "Hello world" << std::endl;
ERROR << "Goodbye world" << std::endl;
Sample output:
16-06-23 21:33:19 [INFO] main.cpp(main:6) >> Hello world
16-06-23 21:33:19 [ERROR] main.cpp(main:7) >> Goodbye world
Put these lines in your header file. I find this very useful for debugging, etc.
Assuming the key is contained inside the <appSettings>
node:
ConfigurationSettings.AppSettings["theKey"];
As for "writing" - put simply, dont.
The web.config is not designed for that, if you're going to be changing a value constantly, put it in a static helper class.
Posed question
Responding to the question 'what metric should be used for multi-class classification with imbalanced data': Macro-F1-measure. Macro Precision and Macro Recall can be also used, but they are not so easily interpretable as for binary classificaion, they are already incorporated into F-measure, and excess metrics complicate methods comparison, parameters tuning, and so on.
Micro averaging are sensitive to class imbalance: if your method, for example, works good for the most common labels and totally messes others, micro-averaged metrics show good results.
Weighting averaging isn't well suited for imbalanced data, because it weights by counts of labels. Moreover, it is too hardly interpretable and unpopular: for instance, there is no mention of such an averaging in the following very detailed survey I strongly recommend to look through:
Sokolova, Marina, and Guy Lapalme. "A systematic analysis of performance measures for classification tasks." Information Processing & Management 45.4 (2009): 427-437.
Application-specific question
However, returning to your task, I'd research 2 topics:
Commonly used metrics. As I can infer after looking through literature, there are 2 main evaluation metrics:
Yu, April, and Daryl Chang. "Multiclass Sentiment Prediction using Yelp Business."
(link) - note that the authors work with almost the same distribution of ratings, see Figure 5.
Pang, Bo, and Lillian Lee. "Seeing stars: Exploiting class relationships for sentiment categorization with respect to rating scales." Proceedings of the 43rd Annual Meeting on Association for Computational Linguistics. Association for Computational Linguistics, 2005.
(link)
Lee, Moontae, and R. Grafe. "Multiclass sentiment analysis with restaurant reviews." Final Projects from CS N 224 (2010).
(link) - they explore both accuracy and MSE, considering the latter to be better
Pappas, Nikolaos, Rue Marconi, and Andrei Popescu-Belis. "Explaining the Stars: Weighted Multiple-Instance Learning for Aspect-Based Sentiment Analysis." Proceedings of the 2014 Conference on Empirical Methods In Natural Language Processing. No. EPFL-CONF-200899. 2014.
(link) - they utilize scikit-learn for evaluation and baseline approaches and state that their code is available; however, I can't find it, so if you need it, write a letter to the authors, the work is pretty new and seems to be written in Python.
Cost of different errors. If you care more about avoiding gross blunders, e.g. assinging 1-star to 5-star review or something like that, look at MSE; if difference matters, but not so much, try MAE, since it doesn't square diff; otherwise stay with Accuracy.
About approaches, not metrics
Try regression approaches, e.g. SVR, since they generally outperforms Multiclass classifiers like SVC or OVA SVM.
"Therefore it's reasonable to assume much space should now be retrievable."
Apologies if I misunderstood the question, but are you sure it's the database and not the log files that are using up the space? Check to see what recovery model the database is in. Chances are it's in Full, which means the log file is never truncated. If you don't need a complete record of every transaction, you should be able to change to Simple, which will truncate the logs. You can shrink the database during the process. Assuming things go right, the process looks like:
If that doesn't work (or you get a message saying "log file is full" when you try to switch recovery modes), try this:
etc.
The R
graphics
package has the function axTicks
that returns the tick locations of the ticks that the axis
and plot
functions would set automatically. The other answers given to this question define the tick locations manually which might not be convenient in some situations.
myTicks = axTicks(1)
axis(1, at = myTicks, labels = formatC(myTicks, format = 'd'))
A minimal example would be
plot(10^(0:10), 0:10, log = 'x', xaxt = 'n')
myTicks = axTicks(1)
axis(1, at = myTicks, labels = formatC(myTicks, format = 'd'))
There is also an log
parameter in the axTicks
function but in this situation it does not need to be set to get the proper logarithmic axis tick location.
what worked for me was unchecking "Use Managed Compatibility Mode" under
Tools -> Options -> Debugging
TBN: checking or unchecking "Require source file to exactly match the original version" seems not influences the E&C
Hope this can help.
When I stumbled up on this answer I was looking for a way to get an output that is easy to parse. For me the option --with-colons
did the trick:
$ gpg --with-colons file
sec::4096:1:AAAAAAAAAAAAAAAA:YYYY-MM-DD::::Name (comment) email
ssb::4096:1:BBBBBBBBBBBBBBBB:YYYY-MM-DD::::
Documentation can be found here.
The loc
parameter specifies in which corner of the bounding box the legend is placed. The default for loc
is loc="best"
which gives unpredictable results when the bbox_to_anchor
argument is used.
Therefore, when specifying bbox_to_anchor
, always specify loc
as well.
The default for bbox_to_anchor
is (0,0,1,1)
, which is a bounding box over the complete axes. If a different bounding box is specified, is is usually sufficient to use the first two values, which give (x0, y0) of the bounding box.
Below is an example where the bounding box is set to position (0.6,0.5)
(green dot) and different loc
parameters are tested. Because the legend extents outside the bounding box, the loc
parameter may be interpreted as "which corner of the legend shall be placed at position given by the 2-tuple bbox_to_anchor argument".
import matplotlib.pyplot as plt
plt.rcParams["figure.figsize"] = 6, 3
fig, axes = plt.subplots(ncols=3)
locs = ["upper left", "lower left", "center right"]
for l, ax in zip(locs, axes.flatten()):
ax.set_title(l)
ax.plot([1,2,3],[2,3,1], "b-", label="blue")
ax.plot([1,2,3],[1,2,1], "r-", label="red")
ax.legend(loc=l, bbox_to_anchor=(0.6,0.5))
ax.scatter((0.6),(0.5), s=81, c="limegreen", transform=ax.transAxes)
plt.tight_layout()
plt.show()
See especially this answer for a detailed explanation and the question What does a 4-element tuple argument for 'bbox_to_anchor' mean in matplotlib? .
bbox_transform
argument. If may make sense to use figure coordinates
ax.legend(bbox_to_anchor=(1,0), loc="lower right", bbox_transform=fig.transFigure)
It may not make too much sense to use data coordinates, but since you asked for it this would be done via bbox_transform=ax.transData
.
Appears you are having 'y' default to 1: An arrow function would be useful in 2020:
let x = (y = 1) => //insert operation with y here
Let 'x' be a function where 'y' is a parameter which would be assigned a default to '1' if it is some null or undefined value, then return some operation with y.
Perl was likely the first language to use it. Groovy is another language that supports it. Basically instead of returning 1
(true
) or 0
(false
) depending on whether the arguments are equal or unequal, the spaceship operator will return 1
, 0
, or -1
depending on the value of the left argument relative to the right argument.
a <=> b :=
if a < b then return -1
if a = b then return 0
if a > b then return 1
if a and b are not comparable then return nil
It's useful for sorting an array.
If this error appeared after resolving merge conflicts, simple Build -> Clean project could help.
Right click project solution
Properties -> Configuration Properties -> C/C++ -> Precompiled Headers
Click on "Precompiled Headers" change to "Not Using Precompiled Headers".
Erase the "pch.h"/"stdafx.h" field in "Precompiled Header File" for the EOF error at the end of the build for the project.
Then you can feel free to delete the pch./stdafx. files in your project
Using Sieve of Eratosthenes logic, I am able to achieve the same results with much faster speed.
My code demo VS accepted answer.
Comparing the count
,
my code takes significantly lesser iteration to finish the job. Checkout the results for different N
values in the end.
Why this code performs better than already accepted ones:
- the even numbers are not checked even once throughout the process.
- both inner and outer loops are checking only within possible limits. No extraneous checks.
Code:
int N = 1000; //Print primes number from 1 to N
vector<bool> primes(N, true);
for(int i = 3; i*i < N; i += 2){ //Jump of 2
for(int j = 3; j*i < N; j+=2){ //Again, jump of 2
primes[j*i] = false;
}
}
if(N >= 2) cout << "2 ";
for(int i = 3; i < N; i+=2){ //Again, jump of 2
if(primes[i] == true) cout << i << " ";
}
For N = 1000
, my code takes 1166 iterations, accepted answer takes 5287 (4.5 times slower)
For N = 10000
, my code takes 14637 iterations, accepted answer takes 117526 (8 times slower)
For N = 100000
, my code takes 175491 iterations, accepted answer takes 2745693 (15.6 times slower)
Im coming from react native but I think that this applies to this question as well. To specify.
Within the file android/app/build.gradle
search for applicationId
(within android
, defaultConfig
)
and ensure that that value is the same this
client[0]client_info.android_client_info.package_name
as the value within google-services.json
.
A command-line process such cmd.exe
or mysql.exe
will usually read (and execute) whatever you (the user) type in (at the keyboard).
To mimic that, I think you want to use the RedirectStandardInput
property: http://msdn.microsoft.com/en-us/library/system.diagnostics.processstartinfo.redirectstandardinput.aspx
You can specify the -t
option (--target
) to specify the destination directory. See pip install --help
for detailed information. This is the command you need:
pip install -t path_to_your_home package-name
for example, for installing say mxnet, in my $HOME
directory, I type:
pip install -t /home/foivos/ mxnet
to complete of Pit answer and for better perfromance : get all in one query and use NextResult method.
using (var sqlCon = new SqlConnection("Server=127.0.0.1;Database=MyDb;User Id=Me;Password=glop;"))
{
sqlCon.Open();
var com = sqlCon.CreateCommand();
com.CommandText = "select * from BigTable;select @@ROWCOUNT;";
using (var reader = com.ExecuteReader())
{
while(reader.read()){
//iterate code
}
int totalRow = 0 ;
reader.NextResult(); //
if(reader.read()){
totalRow = (int)reader[0];
}
}
sqlCon.Close();
}
Bootstrap is the world’s most popular and widely used open-source framework for developing with HTML, CSS, and JS. It is a front end framework of HTML. Bootstrap helps in building responsive websites or web applications and a 12-column grid system that helps dynamically adjust the website to a suitable screen resolution. The current version of bootstrap is 4.3.1 and the bootstrap team has also officially announced Bootstrap 5 version and changes like removing jquery from bootstrap. Some of the crucial reasons why bootstrap framework is most preferable are
It is easy to use
Bootstrap has a big community support
Customizations can be done easily
It increases development speed
Responsiveness
For more details, you can check the official website: https://getbootstrap.com/
protected void gvLogMessageDetail_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.Header)
{
if (rdlForImportOrExport.SelectedIndex == 1)
{
e.Row.Cells[3].Visible = false;
e.Row.Cells[4].Visible = false;
e.Row.Cells[5].Visible = false;
}
else
{
e.Row.Cells[3].Visible = true;
e.Row.Cells[4].Visible = true;
e.Row.Cells[5].Visible = true;
}
}
if (e.Row.RowType == DataControlRowType.DataRow) //skip header row
{
try
{
if (rdlForImportOrExport.SelectedIndex == 1)
{
e.Row.Cells[3].Visible = false;
e.Row.Cells[4].Visible = false;
e.Row.Cells[5].Visible = false;
}
else
{
e.Row.Cells[3].Visible = true;
e.Row.Cells[4].Visible = true;
e.Row.Cells[5].Visible = true;
}
}
catch
{
ClientScript.RegisterStartupScript(GetType(), "Expand", "<SCRIPT LANGUAGE='javascript'>alert('There is binding problem in child grid.');</script>");
}
}
}
There is a dynamic comparison chart over at the versioncontrolblog where you can compare several different version control systems.
Refresh the page after sending the 403:
<?php
header('HTTP/1.0 403 Forbidden');
?>
<html><head>
<meta http-equiv="refresh" content="0;URL=http://my.error.page">
</head><body></body></html>
If you want a really simple answer:
s_1 = "abc def ghi"
s_2 = "def ghi abc"
flag = 0
for i in s_1:
if i not in s_2:
flag = 1
if flag == 0:
print("a == b")
else:
print("a != b")
Of the top of my head, can you try to use the 'q' operator for the string literal
something like
insert all
into domo_queries values (q'[select
substr(to_char(max_data),1,4) as year,
substr(to_char(max_data),5,6) as month,
max_data
from dss_fin_user.acq_dashboard_src_load_success
where source = 'CHQ PeopleSoft FS']')
select * from dual;
Note that the single quotes of your predicate are not escaped, and the string sits between q'[...]'.
This works to enforce a max of 2 decimal places without automatically rounding to 2 places if the user isn't finished typing.
function naturalRound(e) {
let dec = e.target.value.indexOf(".")
let tooLong = e.target.value.length > dec + 3
let invalidNum = isNaN(parseFloat(e.target.value))
if ((dec >= 0 && tooLong) || invalidNum) {
e.target.value = e.target.value.slice(0, -1)
}
}
You could read the entire input line from scanner, then split the line by ,
then you have a String[]
, parse each number into int[]
with index one to one matching...(assuming valid input and no NumberFormatExceptions
) like
String line = scanner.nextLine();
String[] numberStrs = line.split(",");
int[] numbers = new int[numberStrs.length];
for(int i = 0;i < numberStrs.length;i++)
{
// Note that this is assuming valid input
// If you want to check then add a try/catch
// and another index for the numbers if to continue adding the others (see below)
numbers[i] = Integer.parseInt(numberStrs[i]);
}
As YoYo's answer suggests, the above can be achieved more concisely in Java 8:
int[] numbers = Arrays.stream(line.split(",")).mapToInt(Integer::parseInt).toArray();
To handle invalid input
You will need to consider what you want need to do in this case, do you want to know that there was bad input at that element or just skip it.
If you don't need to know about invalid input but just want to continue parsing the array you could do the following:
int index = 0;
for(int i = 0;i < numberStrs.length;i++)
{
try
{
numbers[index] = Integer.parseInt(numberStrs[i]);
index++;
}
catch (NumberFormatException nfe)
{
//Do nothing or you could print error if you want
}
}
// Now there will be a number of 'invalid' elements
// at the end which will need to be trimmed
numbers = Arrays.copyOf(numbers, index);
The reason we should trim the resulting array is that the invalid elements at the end of the int[]
will be represented by a 0
, these need to be removed in order to differentiate between a valid input value of 0
.
Results in
Input: "2,5,6,bad,10"
Output: [2,3,6,10]
If you need to know about invalid input later you could do the following:
Integer[] numbers = new Integer[numberStrs.length];
for(int i = 0;i < numberStrs.length;i++)
{
try
{
numbers[i] = Integer.parseInt(numberStrs[i]);
}
catch (NumberFormatException nfe)
{
numbers[i] = null;
}
}
In this case bad input (not a valid integer) the element will be null.
Results in
Input: "2,5,6,bad,10"
Output: [2,3,6,null,10]
You could potentially improve performance by not catching the exception (see this question for more on this) and use a different method to check for valid integers.
DECLARE @x int=1
declare @exit bit=1
WHILE @x<=len('123c') AND @exit=1
BEGIN
IF ascii(SUBSTRING('123c',@x,1)) BETWEEN 48 AND 57
BEGIN
set @x=@x+1
END
ELSE
BEGIN
SET @exit=0
PRINT 'string is not all numeric -:('
END
END
I just stumbled upon this great post. If you are just checking whether the data is of string type then maybe we can skip the loop and use this struct (in my humble opinion)
public static bool IsStringType(object data)
{
return (data.GetType().GetProperties().Where(x => x.PropertyType == typeof(string)).FirstOrDefault() != null);
}
When you want to run an executable file from the Command prompt, (cmd.exe), or a batch file, it will:
%PATH%
environment variable for the executable file.If the file isn't found in either of those options you will need to either:
%PATH%
by apending it, (recommended only with extreme caution).You can see which locations are specified in %PATH%
from the Command prompt, Echo %Path%
.
Because of your reported error we can assume that Mobile.exe
is not in the current directory or in a location specified within the %Path%
variable, so you need to use 1.
, 2.
or 3.
.
Examples for 1.
C:\directory_path_without_spaces\My-App\Mobile.exe
or:
"C:\directory path with spaces\My-App\Mobile.exe"
Alternatively you may try:
Start C:\directory_path_without_spaces\My-App\Mobile.exe
or
Start "" "C:\directory path with spaces\My-App\Mobile.exe"
Where ""
is an empty title, (you can optionally add a string between those doublequotes).
Examples for 2.
CD /D C:\directory_path_without_spaces\My-App
Mobile.exe
or
CD /D "C:\directory path with spaces\My-App"
Mobile.exe
You could also use the /D
option with Start
to change the working directory for the executable to be run by the start command
Start /D C:\directory_path_without_spaces\My-App Mobile.exe
or
Start "" /D "C:\directory path with spaces\My-App" Mobile.exe
the padding in the TD works if you want the space to have the same background color as the td
in my case, requirement was for white space between header row and whatever was above it
by applying this styling to a single cell, i was able to get the desired separation. It was not necessary to add it to all cells... Arguably not the MOST elegant, but possibly more elegant than separator rows.
<td colspan="10">
<div class="HeaderRow"
style="margin-top:10px;">
<%# Eval("VendorName")%>
</div>
</td>
Select the folder containing the package tree of these classes, right-click and choose "Mark Directory as -> Source Root"
@Component
and @Bean
do two quite different things, and shouldn't be confused.
@Component
(and @Service
and @Repository
) are used to auto-detect and auto-configure beans using classpath scanning. There's an implicit one-to-one mapping between the annotated class and the bean (i.e. one bean per class). Control of wiring is quite limited with this approach, since it's purely declarative.
@Bean
is used to explicitly declare a single bean, rather than letting Spring do it automatically as above. It decouples the declaration of the bean from the class definition, and lets you create and configure beans exactly how you choose.
To answer your question...
would it have been possible to re-use the
@Component
annotation instead of introducing@Bean
annotation?
Sure, probably; but they chose not to, since the two are quite different. Spring's already confusing enough without muddying the waters further.
add checking condition for onload
if (newWinObj.onload) {
newWinObj.onload = function() {
newWinObj.print();
newWinObj.close();
};
}
else {
newWinObj.print();
newWinObj.close();
}
The copy
command is a SQL*Plus command (not a SQL Developer command). If you have your tnsname entries setup for SID1 and SID2 (e.g. try a tnsping), you should be able to execute your command.
Another assumption is that table1 has the same columns as the message_table (and the columns have only the following data types: CHAR, DATE, LONG, NUMBER or VARCHAR2). Also, with an insert command, you would need to be concerned about primary keys (e.g. that you are not inserting duplicate records).
I tried a variation of your command as follows in SQL*Plus (with no errors):
copy from scott/tiger@db1 to scott/tiger@db2 create new_emp using select * from emp;
After I executed the above statement, I also truncate the new_emp table and executed this command:
copy from scott/tiger@db1 to scott/tiger@db2 insert new_emp using select * from emp;
With SQL Developer, you could do the following to perform a similar approach to copying objects:
On the tool bar, select Tools>Database copy.
Identify source and destination connections with the copy options you would like.
For object type, select table(s).
The copy command approach is old and its features are not being updated with the release of new data types. There are a number of more current approaches to this like Oracle's data pump (even for tables).
To go with thelost's Apache Commons answer: using guava-libraries (Google's general-purpose Java utility library which I would argue should now be on the classpath of any non-trivial Java project), this would use CharMatcher:
CharMatcher.is('0').trimLeadingFrom(inputString);
All answers posted so far are giving the right solutions, however no one answer was able to properly explain the underlying cause of the concrete problem.
Facelets is a XML based view technology which uses XHTML+XML to generate HTML output. XML has five special characters which has special treatment by the XML parser:
<
the start of a tag.>
the end of a tag."
the start and end of an attribute value.'
the alternative start and end of an attribute value.&
the start of an entity (which ends with ;
).In case of &
which is not followed by #
(e.g.  
,  
, etc), the XML parser is implicitly looking for one of the five predefined entity names lt
, gt
, amp
, quot
and apos
, or any manually defined entity name. However, in your particular case, you was using &
as a JavaScript operator, not as an XML entity. This totally explains the XML parsing error you got:
The entity name must immediately follow the '&' in the entity reference
In essence, you're writing JavaScript code in the wrong place, a XML document instead of a JS file, so you should be escaping all XML special characters accordingly. The &
must be escaped as &
.
So, in your particular case, the
if (Modernizr.canvas && Modernizr.localstorage &&
must become
if (Modernizr.canvas && Modernizr.localstorage &&
to make it XML-valid.
However, this makes the JavaScript code harder to read and maintain. As stated in Mozilla Developer Network's excellent document Writing JavaScript for XHTML, you should be placing the JavaScript code in a character data (CDATA) block. Thus, in JSF terms, that would be:
<h:outputScript>
<![CDATA[
// ...
]]>
</h:outputScript>
The XML parser will interpret the block's contents as "plain vanilla" character data and not as XML and hence interpret the XML special characters "as-is".
But, much better is to just put the JS code in its own JS file which you include by <script src>
, or in JSF terms, the <h:outputScript>
.
<h:outputScript name="onload.js" target="body" />
(note the target="body"
; this way JSF will automatically render the <script>
at the very end of <body>
, regardless of where <h:outputScript>
itself is located, hereby achieving the same effect as with window.onload
and $(document).ready()
; so you don't need to use those anymore in that script)
This way you don't need to worry about XML-special characters in your JS code. As an additional bonus, this gives you the opportunity to let the browser cache the JS file so that total response size is smaller.
Try this, It worked for me
SELECT * FROM (
SELECT
[Code],
[Name],
[CategoryCode],
[CreatedDate],
[ModifiedDate],
[CreatedBy],
[ModifiedBy],
[IsActive],
ROW_NUMBER() OVER(PARTITION BY [Code],[Name],[CategoryCode] ORDER BY ID DESC) rownumber
FROM MasterTable
) a
WHERE rownumber = 1
You have set your %JAVA_HOME
to jdk 1.7, but you are trying to compile using 1.8. Install jdk 1.8 and make sure your %JAVA_HOME
points to that or drop the target release to 1.7.
invalid target release: 1.8
The target release refers to the jdk version.
Usage:
select replace_foreign_key('user_rates_posts', 'post_id', 'ON DELETE CASCADE');
Function:
CREATE OR REPLACE FUNCTION
replace_foreign_key(f_table VARCHAR, f_column VARCHAR, new_options VARCHAR)
RETURNS VARCHAR
AS $$
DECLARE constraint_name varchar;
DECLARE reftable varchar;
DECLARE refcolumn varchar;
BEGIN
SELECT tc.constraint_name, ccu.table_name AS foreign_table_name, ccu.column_name AS foreign_column_name
FROM
information_schema.table_constraints AS tc
JOIN information_schema.key_column_usage AS kcu
ON tc.constraint_name = kcu.constraint_name
JOIN information_schema.constraint_column_usage AS ccu
ON ccu.constraint_name = tc.constraint_name
WHERE constraint_type = 'FOREIGN KEY'
AND tc.table_name= f_table AND kcu.column_name= f_column
INTO constraint_name, reftable, refcolumn;
EXECUTE 'alter table ' || f_table || ' drop constraint ' || constraint_name ||
', ADD CONSTRAINT ' || constraint_name || ' FOREIGN KEY (' || f_column || ') ' ||
' REFERENCES ' || reftable || '(' || refcolumn || ') ' || new_options || ';';
RETURN 'Constraint replaced: ' || constraint_name || ' (' || f_table || '.' || f_column ||
' -> ' || reftable || '.' || refcolumn || '); New options: ' || new_options;
END;
$$ LANGUAGE plpgsql;
Be aware: this function won't copy attributes of initial foreign key. It only takes foreign table name / column name, drops current key and replaces with new one.
We can do like:
data = $form.serialize() + "&foo=bar";
For example:
var userData = localStorage.getItem("userFormSerializeData");
var userId = localStorage.getItem("userId");
$.ajax({
type: "POST",
url: postUrl,
data: $(form).serialize() + "&" + userData + "&userId=" + userId,
dataType: 'json',
success: function (response) {
//do something
}
});
For reading full response in Angular you should add the observe option:
{ observe: 'response' }
return this.http.get(`${environment.serverUrl}/api/posts/${postId}/comments/?page=${page}&size=${size}`, { observe: 'response' });
The examples above are a bit confusing, and this is probably the best way:
$.ajaxSetup({
headers: {
'Authorization': "Basic " + btoa(USERNAME + ":" + PASSWORD)
}
});
I took the above from a combination of Rico and Yossi's answer.
Simply type source ~/.bash_profile
Alternatively, if you like saving keystrokes you can type . ~/.bash_profile
Richie's answer is close. It depends upon the language. Here is a good solution for java:
int smallest = Integer.MAX_VALUE;
int array[]; // Assume it is filled.
int array_length = array.length;
for (int i = array_length - 1; i >= 0; i--) {
if (array[i] < smallest) {
smallest = array[i];
}
}
I go through the array in reverse order, because comparing "i" to "array_length" in the loop comparison requires a fetch and a comparison (two operations), whereas comparing "i" to "0" is a single JVM bytecode operation. If the work being done in the loop is negligible, then the loop comparison consumes a sizable fraction of the time.
Of course, others pointed out that encapsulating the array and controlling inserts will help. If getting the minimum was ALL you needed, keeping the list in sorted order is not necessary. Just keep an instance variable that holds the smallest inserted so far, and compare it to each value as it is added to the array. (Of course, this fails if you remove elements. In that case, if you remove the current lowest value, you need to do a scan of the entire array to find the new lowest value.)
You can have 5 imageview with defalut image as star that is empty and fill the rating bar with half or full image base on rating.
public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View grid=inflater.inflate(R.layout.griditem, parent, false);
imageView=(ImageView)grid.findViewById(R.id.grid_prod);
imageView.setImageResource(imgId[position]);
imgoff =(ImageView)grid.findViewById(R.id.offer);
tv=(TextView)grid.findViewById(R.id.grid_text);
tv.setText(namesArr[position]);
tv.setTextColor(Color.BLACK);
tv.setPadding(0, 2, 0, 0);
sta=(ImageView)grid.findViewById(R.id.imageView);
sta1=(ImageView)grid.findViewById(R.id.imageView1);
sta2=(ImageView)grid.findViewById(R.id.imageView2);
sta3=(ImageView)grid.findViewById(R.id.imageView3);
sta4=(ImageView)grid.findViewById(R.id.imageView4);
Float rate=rateFArr[position];
if(rate==5 || rate==4.5)
{
sta.setImageResource(R.drawable.full__small);
sta1.setImageResource(R.drawable.full__small);
sta2.setImageResource(R.drawable.full__small);
sta3.setImageResource(R.drawable.full__small);
if(rate==4.5)
{
sta4.setImageResource(R.drawable.half_small);
}
else
{
sta4.setImageResource(R.drawable.full__small);
}
}
if(rate==4 || rate==3.5)
{
sta.setImageResource(R.drawable.full__small);
sta1.setImageResource(R.drawable.full__small);
sta2.setImageResource(R.drawable.full__small);
if(rate==3.5)
{
sta3.setImageResource(R.drawable.half_small);
}
else
{
sta3.setImageResource(R.drawable.full__small);
}
}
if(rate==3 || rate==2.5)
{
sta.setImageResource(R.drawable.full__small);
sta1.setImageResource(R.drawable.full__small);
if(rate==2.5)
{
sta2.setImageResource(R.drawable.half_small);
}
else
{
sta2.setImageResource(R.drawable.full__small);
}
}
if(rate==2 || rate==1.5)
{
sta.setImageResource(R.drawable.full__small);
if(rate==1.5)
{
sta1.setImageResource(R.drawable.half_small);
}
else
{
sta1.setImageResource(R.drawable.full__small);
}
}
if(rate==1 || rate==0.5)
{
if(rate==1)
sta.setImageResource(R.drawable.full__small);
else
sta.setImageResource(R.drawable.half_small);
}
if(rate>5)
{
sta.setImageResource(R.drawable.full__small);
sta1.setImageResource(R.drawable.full__small);
sta2.setImageResource(R.drawable.full__small);
sta3.setImageResource(R.drawable.full__small);
sta4.setImageResource(R.drawable.full__small);
}
// rb=(RatingBar)findViewById(R.id.grid_rating);
//rb.setRating(rateFArr[position]);
return grid;
}
The answers mentioned here is quite elegant https://stackoverflow.com/a/6095776/1869562 but upon testing, I realize it only returns the last name. What if you want to return the entire record itself ? Do this (For Mysql)
SELECT *
FROM `beneficiary`
WHERE `lastname`
IN (
SELECT `lastname`
FROM `beneficiary`
GROUP BY `lastname`
HAVING COUNT( `lastname` ) >1
)
Case sensitive Tables (table names created with double-quotes) can throw this same error as well. See this answer for more information.
Simply wrap the table in double quotes:
INSERT INTO "customer" (c_id,name,surname) VALUES ('1','Micheal','Jackson')
As mentioned above, by default text editors will not use UTF-8 as the standard encoding for documents. However most editors will allow you to change that in the settings. Even for each specific document.
Here is the fix :
for a sample data like :
financeRef.pageCount = [{listCount:10,listName:modelStrings.COMMON_TEN_PAGE},
{listCount:25,listName:modelStrings.COMMON_TWENTYFIVE_PAGE},
{listCount:50,listName:modelStrings.COMMON_FIFTY_PAGE}];
The select option should be like this:-
<select ng-model="financeRef.financeLimit" ng-change="financeRef.updateRecords(1)"
class="perPageCount" ng-show="financeRef.showTable" ng-init="financeRef.financeLimit=10"
ng-options="value.listCount as value.listName for value in financeRef.pageCount"
></select>
The point being when we write value.listCount
as value.listName
, it automatically populates the text in value.listName
but the value of the selected option is value.listCount
although the values my show normal 0,1,2 .. and so on !!!
In my case, the financeRef.financeLimit
is actually grabbing the value.listCount
and I can do my manipulation in the controller dynamically.
I had a similar problem with 'org.codehaus.mojo'-'jaxws-maven-plugin': could not resolve dependencies. Fortunately, I was able to do a Project > Clean in Eclipse, which resolved the issue.
I'd recommend using a regular expressions instead of string operations for this:
Set fso = CreateObject("Scripting.FileSystemObject")
filename = "C:\VBS\filediprova.txt"
newtext = vbLf & "<tr><td><a href=""..."">Beginning_of_DD_TC5</a></td></tr>"
Set re = New RegExp
re.Pattern = "(\n.*?Test Case \d)"
re.Global = False
re.IgnoreCase = True
text = f.OpenTextFile(filename).ReadAll
f.OpenTextFile(filename, 2).Write re.Replace(text, newText & "$1")
The regular expression will match a line feed (\n
) followed by a line containing the string Test Case
followed by a number (\d
), and the replacement will prepend that with the text you want to insert (variable newtext
). Setting re.Global = False
makes the replacement stop after the first match.
If the line breaks in your text file are encoded as CR-LF
(carriage return + line feed) you'll have to change \n
into \r\n
and vbLf
into vbCrLf
.
If you have to modify several text files, you could do it in a loop like this:
For Each f In fso.GetFolder("C:\VBS").Files
If LCase(fso.GetExtensionName(f.Name)) = "txt" Then
text = f.OpenAsTextStream.ReadAll
f.OpenAsTextStream(2).Write re.Replace(text, newText & "$1")
End If
Next
I have found that using backticks to capture command output into a variable, adversly, yeilds one too many ps aux results, e.g. for a single running instance of abc.sh:
ps aux | grep -w "abc.sh" | grep -v grep | wc -l
returns "1". However,
count=`ps aux | grep -w "abc.sh" | grep -v grep | wc -l`
echo $count
returns "2"
Seems like using the backtick construction somehow temporarily creates another process. Could be the reason why the topicstarter could not make this work. Just need to decrement the $count var.
Check this:
.hero1
{
width: 90%;
height: 200px;
margin: auto;
background-color: #e15915;
}
.hero2
{
width: 0px;
height: 0px;
border-style: solid;
margin: auto;
border-width: 90px 58px 0 58px;
border-color: #e15915 transparent transparent transparent;
line-height: 0px;
_border-color: #e15915 #000000 #000000 #000000;
_filter: progid:DXImageTransform.Microsoft.Chroma(color='#000000')
}
PHP is run server-side. JavaScript is run client-side in the browser of the user requesting the page. By the time the JavaScript is executed, there is no access to PHP on the server whatsoever. Please read this article with details about client-side vs server-side coding.
What happens in a nutshell is this:
In your case, PHP will write the JS code into the page, so it can be executed when the page is rendered in your browser. By that time, the PHP part in your JS snippet does no longer exist. It was executed on the server already. It created a variable $result
that contained a SQL query string. You didn't use it, so when the page is send back to your browser, it's gone. Have a look at the sourcecode when the page is rendered in your browser. You will see that there is nothing at the position you put the PHP code.
The only way to do what you are looking to do is either:
with the values you want to be insert into the database.
Your question shows you have succumbed to some of the common misconceptions surrounding table variables and temporary tables.
I have written quite an extensive answer on the DBA site looking at the differences between the two object types. This also addresses your question about disk vs memory (I didn't see any significant difference in behaviour between the two).
Regarding the question in the title though as to when to use a table variable vs a local temporary table you don't always have a choice. In functions, for example, it is only possible to use a table variable and if you need to write to the table in a child scope then only a #temp
table will do
(table-valued parameters allow readonly access).
Where you do have a choice some suggestions are below (though the most reliable method is to simply test both with your specific workload).
If you need an index that cannot be created on a table variable then you will of course need a #temporary
table. The details of this are version dependant however. For SQL Server 2012 and below the only indexes that could be created on table variables were those implicitly created through a UNIQUE
or PRIMARY KEY
constraint. SQL Server 2014 introduced inline index syntax for a subset of the options available in CREATE INDEX
. This has been extended since to allow filtered index conditions. Indexes with INCLUDE
-d columns or columnstore indexes are still not possible to create on table variables however.
If you will be repeatedly adding and deleting large numbers of rows from the table then use a #temporary
table. That supports TRUNCATE
(which is more efficient than DELETE
for large tables) and additionally subsequent inserts following a TRUNCATE
can have better performance than those following a DELETE
as illustrated here.
#temporary
table. That supports creation of statistics which allows the plan to be dynamically recompiled according to the data (though for cached temporary tables in stored procedures the recompilation behaviour needs to be understood separately).SELECT
statement then consider that using a table variable will block the possibility of this using a parallel plan.#temp
table within a user transaction locks can be held longer than for table variables (potentially until the end of transaction vs end of statement dependent on the type of lock and isolation level) and also it can prevent truncation of the tempdb
transaction log until the user transaction ends. So this might favour the use of table variables.#temporary
tables. Bob Ward points out in his tempdb
presentation that this can cause additional contention on system tables under conditions of high concurrency. Additionally, when dealing with small quantities of data this can make a measurable difference to performance.Effects of rowset sharing
DECLARE @T TABLE(id INT PRIMARY KEY, Flag BIT);
CREATE TABLE #T (id INT PRIMARY KEY, Flag BIT);
INSERT INTO @T
output inserted.* into #T
SELECT TOP 1000000 ROW_NUMBER() OVER (ORDER BY @@SPID), 0
FROM master..spt_values v1, master..spt_values v2
SET STATISTICS TIME ON
/*CPU time = 7016 ms, elapsed time = 7860 ms.*/
UPDATE @T SET Flag=1;
/*CPU time = 6234 ms, elapsed time = 7236 ms.*/
DELETE FROM @T
/* CPU time = 828 ms, elapsed time = 1120 ms.*/
UPDATE #T SET Flag=1;
/*CPU time = 672 ms, elapsed time = 980 ms.*/
DELETE FROM #T
DROP TABLE #T
As assembly is the smallest unit of versioning security, deployment and reusability of code in Microsoft.Net.
It contains:
- Assembly Identity
- Manifest
- Metadata
- MSIL Code
- Security Information
- Assembly Header
Use the csv
module:
import csv
with open("test.csv", "r") as f:
reader = csv.reader(f, delimiter="\t")
for i, line in enumerate(reader):
print 'line[{}] = {}'.format(i, line)
Output:
line[0] = ['Year:', 'Dec:', 'Jan:']
line[1] = ['1', '50', '60']
line[2] = ['2', '25', '50']
line[3] = ['3', '30', '30']
line[4] = ['4', '40', '20']
line[5] = ['5', '10', '10']
I had exactly the same problem. Just one more working modification of the solution given by Denis (the type must be specified):
SELECT ARRAY(
SELECT column_name::text
FROM information_schema.columns
WHERE table_name='aean'
)
When you have to go from one page to another page in android changes made in 2 files
Intent intentSignUP = new Intent(this,SignUpActivity.class);
startActivity(intentSignUP);
add activity in androidManifest file also like
<activity android:name=".SignUpActivity"></activity>
If using Android.
Make sure you have added the permission to write to your EXTERNAL_STORAGE
to your AndroidManifest.xml
.
Add this line to your AndroidManifest.xml
file above and outside your <application>
tag.
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
This will allow your application to write to the sdcard. This will help if your EXTERNAL_STORAGE
is where you have stored your database on the device.
The previous answers are all correct. I go one step further and make C# work for me by defining an extension method on String:
public static class Extensions
{
public static string[] Split(this string toSplit, string splitOn) {
return toSplit.Split(new string[] { splitOn }, StringSplitOptions.None);
}
}
That way I can call it on any string in the simple way I naively expected the first time I tried to accomplish this:
"a big long string with stuff to split on".Split("g str");
or:
SELECT coalesce(MAX(X), 0) AS MaxX
FROM tbl
WHERE XID = 1
This is a solution and a model for possible solutions. Use Moment.js in your client to format dates, convert to unix time.
$scope.startDate.unix()
Setup your route parameters to be long.
[Route("{startDate:long?}")]
public async Task<object[]> Get(long? startDate)
{
DateTime? sDate = new DateTime();
if (startDate != null)
{
sDate = new DateTime().FromUnixTime(startDate.Value);
}
else
{
sDate = null;
}
... your code here!
}
Create an extension method for Unix time. Unix DateTime Method
I got in trouble at work one time. I was accused of using "magic numbers" in array declarations.
Like this:
int Marylyn[256], Ann[1024];
The company policy was to avoid these magic numbers because, it was explained to me, that these numbers were not portable; that they impeded easy maintenance. I argued that when I am reading the code, I want to know exactly how big the array is. I lost the argument and so, on a Friday afternoon I replaced the offending "magic numbers" with #defines, like this:
#define TWO_FIFTY_SIX 256
#define TEN_TWENTY_FOUR 1024
int Marylyn[TWO_FIFTY_SIX], Ann[TEN_TWENTY_FOUR];
On the following Monday afternoon I was called in and accused of having passive defiant tendencies.
My solution was not to rely on the class name. object.constructor.name works in theory. But if you're using TypeScript in something like Ionic, as soon as you go to production it's going to go up in flames because Ionic's production mode minifies the Javascript code. So the classes get named things like "a" and "e."
What I ended up doing was having a typeName class in all my objects that the constructor assigns the class name to. So:
export class Person {
id: number;
name: string;
typeName: string;
constructor() {
typeName = "Person";
}
Yes that wasn't what was asked, really. But using the constructor.name on something that might potentially get minified down the road is just begging for a headache.
I think you want to cast your dt
to a date
and fix the format of your date literal:
SELECT *
FROM table
WHERE dt::date = '2011-01-01' -- This should be ISO-8601 format, YYYY-MM-DD
Or the standard version:
SELECT *
FROM table
WHERE CAST(dt AS DATE) = '2011-01-01' -- This should be ISO-8601 format, YYYY-MM-DD
The extract
function doesn't understand "date" and it returns a number.
This is the developers page of the Open WhatsApp official page: http://openwhatsapp.org/develop/
You can find a lot of information there about Yowsup.
Or, you can just go the the library's link (which I copied from the Open WhatsApp page anyway): https://github.com/tgalal/yowsup
Enjoy!
Its Work For me.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UIButton *Btn_Play = (UIButton *)[cell viewWithTag:101];
[Btn_Play addTarget:self action:@selector(ButtonClicked:) forControlEvents:UIControlEventTouchUpInside];
}
-(void)ButtonClicked:(UIButton*)sender {
CGPoint buttonPosition = [sender convertPoint:CGPointZero toView:self.Tbl_Name];
NSIndexPath *indexPath = [self.Tbl_Name indexPathForRowAtPoint:buttonPosition];
}
Use enums for TYPE SAFETY, this is a language feature so you will usually get:
Enums can have methods, constructors, you can even use enums inside enums and combine enums with interfaces.
Think of enums as types to replace a well defined set of int constants (which Java 'inherited' from C/C++) and in some cases to replace bit flags.
The book Effective Java 2nd Edition has a whole chapter about them and goes into more details. Also see this Stack Overflow post.
sudo gem install cocoapods --pre -n /usr/local/bin
This works for me.
user.dir
is the "User working directory" according to the Java Tutorial, System Properties
One of the elements to consider as you design your interface is on what event (when A takes place, B happens...) does the new checkbox end up being added?
Let's say there is a button next to the text box. When the button is clicked the value of the textbox is turned into a new checkbox. Our markup could resemble the following...
<div id="checkboxes">
<input type="checkbox" /> Some label<br />
<input type="checkbox" /> Some other label<br />
</div>
<input type="text" id="newCheckText" /> <button id="addCheckbox">Add Checkbox</button>
Based on this markup your jquery could bind to the click
event of the button and manipulate the DOM.
$('#addCheckbox').click(function() {
var text = $('#newCheckText').val();
$('#checkboxes').append('<input type="checkbox" /> ' + text + '<br />');
});
The decimal operator might be more in line with what you are looking for:
>>> from decimal import Decimal
>>> x = "234243.434"
>>> print Decimal(x)
234243.434
By creating the increment table you should be aware not to delete inserted rows. reason for this is to avoid storing large dumb data in db with ID-s in it. Otherwise in case of mysql restart it would get max existing row and continue increment from that point as mention in documentation http://dev.mysql.com/doc/refman/5.0/en/innodb-auto-increment-handling.html
Ctrl-w followed by H, J, K or L (capital) will move the current window to the far left
, bottom
, top
or right
respectively like normal cursor navigation.
The lower case equivalents move focus instead of moving the window.
You can install an indentator package.
Click on File > Extension Manager....
Look for the search field and type: Indentator > Install
Once Indentator is installed, you can use Ctrl + Alt + I
a do while loop would be a nice way to wait for the user input. Like this:
int main()
{
do
{
cout << '\n' << "Press a key to continue...";
} while (cin.get() != '\n');
return 0;
}
You can also use the function system('PAUSE')
but I think this is a bit slower and platform dependent
Since PikkuKatja and glallen asked for a more general solution and I cannot comment yet, I'll write an answer. You can combine statements as in:
> df[df=="" | df==12] <- NA
> df
A B
1 <NA> <NA>
2 xyz <NA>
3 jkl 100
For factors, zxzak's code already yields factors:
> df <- data.frame(list(A=c("","xyz","jkl"), B=c(12,"",100)))
> str(df)
'data.frame': 3 obs. of 2 variables:
$ A: Factor w/ 3 levels "","jkl","xyz": 1 3 2
$ B: Factor w/ 3 levels "","100","12": 3 1 2
If in trouble, I'd suggest to temporarily drop the factors.
df[] <- lapply(df, as.character)
Use IndexOf is easier and high performance.
int index = Value1.IndexOf("abc");
bool found = index >= 0 && index < x;
the accepted answer is not correct, and it makes no sens to accept it considering the question
ngAfterViewInit will trigger when the DOM is ready
whine ngOnInit will trigger when the page component is only starting to be created
3 years old topic, but I found another working solution.
If you're sure you have enough free memory, running 64 bit OS and still getting exceptions, go to Project properties
-> Build
tab and be sure to set x64
as a Platform target
.
Safety first (with Kotlin):
// Default to null
EnumName.values().getOrNull(ordinal)
// Default to a value
EnumName.values().getOrElse(ordinal) { EnumName.MyValue }
You can get Current timestamp in Android by trying below code
time.setText(String.valueOf(System.currentTimeMillis()));
and timeStamp to time format
SimpleDateFormat formatter = new SimpleDateFormat("dd/MM/yyyy");
String dateString = formatter.format(new Date(Long.parseLong(time.getText().toString())));
time.setText(dateString);
you can use this query
SUM(NULLIF(conversion_units, '')::numeric)
I solved this problem by uninstalling flutter from the Plugins. After restarting Android Studio, I opened the plugins, and then it shows that my Dart plugin is not compatible with my Android Studio (v3.6). I updated Dart, restart android studio, then reinstall Flutter again. After that, I have to set the SDK path for the Flutter and voila everything works now :D
where date_dt = to_date(to_char(sysdate-1, 'YYYY-MM-DD') || ' 19:16:08', 'YYYY-MM-DD HH24:MI:SS')
should work.
This code shows how to use a java.text.SimpleDateFormat to parse a java.util.Date from a String:
String str = "Jun 13 2003 23:11:52.454 UTC";
SimpleDateFormat df = new SimpleDateFormat("MMM dd yyyy HH:mm:ss.SSS zzz");
Date date = df.parse(str);
long epoch = date.getTime();
System.out.println(epoch); // 1055545912454
Date.getTime()
returns the epoch time in milliseconds.
I was facing the same issue in eclipse maven project, all i did was
right click on the project
maven --> update project
or just press ALT+ F5
dump this into a more specific collection of just the ids you don't want
var notTheseBarIds = filterBars.Select(fb => fb.BarId);
then try this:
fooSelect = (from f in fooBunch
where !notTheseBarIds.Contains(f.BarId)
select f).ToList();
or this:
fooSelect = fooBunch.Where(f => !notTheseBarIds.Contains(f.BarId)).ToList();
You can add a new line character after the @ symbol like so:
string newString = oldString.Replace("@", "@\n");
You can also use the NewLine
property in the Environment
Class (I think it is Environment).
It is not faster. There is one difference when you can initialize a constant variable depending on some expression:
const int x = (a<b) ? b : a;
You can't do the same with if-else
.
The error means that your are trying to look up JNDI name, that is not attached to any EJB component - the component with that name does not exist.
As far as dir structure is concerned: you have to create a JAR file with EJB components. As I understand you want to play with EJB 2.X components (at least the linked example suggests that) so the structure of the JAR file should be:
/com/mypackage/MyEJB.class /com/mypackage/MyEJBInterface.class /com/mypackage/etc... etc... java classes /META-INF/ejb-jar.xml /META-INF/jboss.xml
The JAR file is more or less ZIP file with file extension changed from ZIP to JAR.
BTW. If you use JBoss 5, you can work with EJB 3.0, which are much more easier to configure. The simplest component is
@Stateless(mappedName="MyComponentName")
@Remote(MyEJBInterface.class)
public class MyEJB implements MyEJBInterface{
public void bussinesMethod(){
}
}
No ejb-jar.xml, jboss.xml is needed, just EJB JAR with MyEJB and MyEJBInterface compiled classes.
Now in your client code you need to lookup "MyComponentName".
1. The SQL Joins clause is used to combine records from two or more tables in a database. A JOIN is a means for combining fields from two tables by using values common to each.
2. The SQL UNION operator combines the result of two or more SELECT statements. Each SELECT statement within the UNION must have the same number of columns. The columns must also have similar data types. Also, the columns in each SELECT statement must be in the same order.
for example: table 1 customers/table 2 orders
inner join:
SELECT ID, NAME, AMOUNT, DATE
FROM CUSTOMERS?
INNER JOIN ORDERS?
ON CUSTOMERS.ID = ORDERS.CUSTOMER_ID;
union:
SELECT ID, NAME, AMOUNT, DATE
?FROM CUSTOMERS?
LEFT JOIN ORDERS?
ON CUSTOMERS.ID = ORDERS.CUSTOMER_ID
UNION
SELECT ID, NAME, AMOUNT, DATE ? FROM CUSTOMERS?
RIGHT JOIN ORDERS?
ON CUSTOMERS.ID = ORDERS.CUSTOMER_ID;
you just need to change the line color and you can apply it without problem
The statement :: driver.manage().window.maximize();
Works perfectly, but the window maximizes only after loading the page on browser, it does not maximizes at the time of initializing the browser.
here : (driver) is called object of Firefox driver, it may be any thing depending on the initializing of Firefox object by you only.
Make a bat file with the following in it:
copy /y C:\temp\log1k.txt C:\temp\log1k_copied.txt
However, I think there are issues if there are spaces in your directory names. Notice this was copied to the same directory, but that doesn't matter. If you want to see how it runs, make another bat file that calls the first and outputs to a log:
C:\temp\test.bat > C:\temp\test.log
(assuming the first bat file was called test.bat and was located in that directory)
Only the reference is changing. First a
was referencing to the string "a", and later you changed it to "ty". The string "a" remains the same.
You must add an ObjectSerialization class to your program the following may work
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
public class ObjectSerializer {
public static String serialize(Serializable obj) throws IOException {
if (obj == null) return "";
try {
ByteArrayOutputStream serialObj = new ByteArrayOutputStream();
ObjectOutputStream objStream = new ObjectOutputStream(serialObj);
objStream.writeObject(obj);
objStream.close();
return encodeBytes(serialObj.toByteArray());
} catch (Exception e) {
throw new RuntimeException(e);
}
}
public static Object deserialize(String str) throws IOException {
if (str == null || str.length() == 0) return null;
try {
ByteArrayInputStream serialObj = new ByteArrayInputStream(decodeBytes(str));
ObjectInputStream objStream = new ObjectInputStream(serialObj);
return objStream.readObject();
} catch (Exception e) {
throw new RuntimeException(e);
}
}
public static String encodeBytes(byte[] bytes) {
StringBuffer strBuf = new StringBuffer();
for (int i = 0; i < bytes.length; i++) {
strBuf.append((char) (((bytes[i] >> 4) & 0xF) + ((int) 'a')));
strBuf.append((char) (((bytes[i]) & 0xF) + ((int) 'a')));
}
return strBuf.toString();
}
public static byte[] decodeBytes(String str) {
byte[] bytes = new byte[str.length() / 2];
for (int i = 0; i < str.length(); i+=2) {
char c = str.charAt(i);
bytes[i/2] = (byte) ((c - 'a') << 4);
c = str.charAt(i+1);
bytes[i/2] += (c - 'a');
}
return bytes;
}
}
if you are using to store an array with SharedPreferences than use following:-
SharedPreferences sharedPreferences = this.getSharedPreferences(getPackageName(),MODE_PRIVATE);
To Serialize:-
sharedPreferences.putString("name",ObjectSerializer.serialize(array));
To Deserialize:-
newarray = (CAST_IT_TO_PROPER_TYPE) ObjectSerializer.deSerialize(sharedPreferences.getString(name),null);
According to the release-notes, Java 11 removed the Java EE modules:
java.xml.bind (JAXB) - REMOVED
See JEP 320 for more info.
You can fix the issue by using alternate versions of the Java EE technologies. Simply add Maven dependencies that contain the classes you need:
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
<version>2.3.0</version>
</dependency>
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-core</artifactId>
<version>2.3.0</version>
</dependency>
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-impl</artifactId>
<version>2.3.0</version>
</dependency>
Instead of using old JAXB modules you can fix the issue by using Jakarta XML Binding from Jakarta EE 8:
<dependency>
<groupId>jakarta.xml.bind</groupId>
<artifactId>jakarta.xml.bind-api</artifactId>
<version>2.3.3</version>
</dependency>
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-impl</artifactId>
<version>2.3.3</version>
<scope>runtime</scope>
</dependency>
Use latest release of Eclipse Implementation of JAXB 3.0.0:
<dependency>
<groupId>jakarta.xml.bind</groupId>
<artifactId>jakarta.xml.bind-api</artifactId>
<version>3.0.0</version>
</dependency>
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-impl</artifactId>
<version>3.0.0</version>
<scope>runtime</scope>
</dependency>
Note: Jakarta EE 9 adopts new API package namespace jakarta.xml.bind.*
, so update import statements:
javax.xml.bind -> jakarta.xml.bind
The approximate conversions are:
This doesn't fully correct for the Earth's polar flattening - for that you'd probably want a more complicated formula using the WGS84 reference ellipsoid (the model used for GPS). But the error is probably negligible for your purposes.
Source: http://en.wikipedia.org/wiki/Latitude
Caution: Be aware that latlong coordinates are expressed in degrees, while the cos
function in most (all?) languages typically accepts radians, therefore a degree to radians conversion is needed.
You have to use the isomorphic-fetch
module to your Node
project because of Node
does not contain Fetch API
yet. for fixing this problem run below command:
npm install --save isomorphic-fetch es6-promise
After installation use below code in your project:
import "isomorphic-fetch"
Hope this answer helps you.
document.getElementById("xyz").setAttribute('style','padding-top:10px');
would also do the job.
Functions are first-class variables in Python. You can declare a function, pass it around as an object, and overwrite it:
def func(): print "hello"
def another_func(f): f()
another_func(func)
def func2(): print "goodbye"
func = func2
This is a fundamental feature of modern scripting languages. JavaScript and Lua do this, too. Ruby doesn't treat functions this way; naming a function calls it.
Of course, there are ways to do these things in Ruby, but they're not first-class operations. For example, you can wrap a function with Proc.new to treat it as a variable--but then it's no longer a function; it's an object with a "call" method.
Ruby functions aren't first-class objects. Functions must be wrapped in an object to pass them around; the resulting object can't be treated like a function. Functions can't be assigned in a first-class manner; instead, a function in its container object must be called to modify them.
def func; p "Hello" end
def another_func(f); method(f)[] end
another_func(:func) # => "Hello"
def func2; print "Goodbye!"
self.class.send(:define_method, :func, method(:func2))
func # => "Goodbye!"
method(:func).owner # => Object
func # => "Goodbye!"
self.func # => "Goodbye!"
Although already over a year old, I stumbled across this question a couple of times on other Google search and I believe I can improve on the previous answer for the benefit of others.
Short answer is you cannot combine both action in one line, but you can create a chain that does what you want and then call it in a one liner.
Let's create a chain to log and accept:
iptables -N LOG_ACCEPT
And let's populate its rules:
iptables -A LOG_ACCEPT -j LOG --log-prefix "INPUT:ACCEPT:" --log-level 6
iptables -A LOG_ACCEPT -j ACCEPT
Now let's create a chain to log and drop:
iptables -N LOG_DROP
And let's populate its rules:
iptables -A LOG_DROP -j LOG --log-prefix "INPUT:DROP: " --log-level 6
iptables -A LOG_DROP -j DROP
Now you can do all actions in one go by jumping (-j) to you custom chains instead of the default LOG / ACCEPT / REJECT / DROP:
iptables -A <your_chain_here> <your_conditions_here> -j LOG_ACCEPT
iptables -A <your_chain_here> <your_conditions_here> -j LOG_DROP
handling yearly quarters, from string to DateTime, I didn't find proper solution so made this:
List<String> dateAsList = 'Q1 2001'.split(' ');
DateTime dateTime = DateTime.now();
String quarter = dateAsList[0];
int year = int.parse(dateAsList[1]);
switch(quarter) {
case "Q1": dateTime = DateTime(year, 1);
break;
case "Q2": dateTime = DateTime(year, 4);
break;
case "Q3": dateTime = DateTime(year, 7);
break;
case "Q4": dateTime = DateTime(year, 10);
break;
}
After searching and trying multiple non working options to get my select default option working. I find a clean solution at: http://www.undefinednull.com/2014/08/11/a-brief-walk-through-of-the-ng-options-in-angularjs/
<select class="ajg-stereo-fader-input-name ajg-select-left" ng-options="option.name for option in selectOptions" ng-model="inputLeft"></select>
<select class="ajg-stereo-fader-input-name ajg-select-right" ng-options="option.name for option in selectOptions" ng-model="inputRight"></select>
scope.inputLeft = scope.selectOptions[0];
scope.inputRight = scope.selectOptions[1];
Here's a concise and hopefully correct way to express it:
private int findHeight(TreeNode<T> aNode){
if(aNode == null || (aNode.left == null && aNode.right == null))
return 0;
return Math.max(findHeight(aNode.left), findHeight(aNode.right)) + 1;
}
If the current node is null, there's no tree. If both children are, there's a single layer, which means 0 height. This uses the definition of height (mentioned by Stephen) as # of layers - 1
This answer is written to show just how trivial it is to bypass poorly written PHP user-validation code, how (and using what) these attacks work and how to replace the old MySQL functions with a secure prepared statement - and basically, why StackOverflow users (probably with a lot of rep) are barking at new users asking questions to improve their code.
First off, please feel free to create this test mysql database (I have called mine prep):
mysql> create table users(
-> id int(2) primary key auto_increment,
-> userid tinytext,
-> pass tinytext);
Query OK, 0 rows affected (0.05 sec)
mysql> insert into users values(null, 'Fluffeh', 'mypass');
Query OK, 1 row affected (0.04 sec)
mysql> create user 'prepared'@'localhost' identified by 'example';
Query OK, 0 rows affected (0.01 sec)
mysql> grant all privileges on prep.* to 'prepared'@'localhost' with grant option;
Query OK, 0 rows affected (0.00 sec)
With that done, we can move to our PHP code.
Lets assume the following script is the verification process for an admin on a website (simplified but working if you copy and use it for testing):
<?php
if(!empty($_POST['user']))
{
$user=$_POST['user'];
}
else
{
$user='bob';
}
if(!empty($_POST['pass']))
{
$pass=$_POST['pass'];
}
else
{
$pass='bob';
}
$database='prep';
$link=mysql_connect('localhost', 'prepared', 'example');
mysql_select_db($database) or die( "Unable to select database");
$sql="select id, userid, pass from users where userid='$user' and pass='$pass'";
//echo $sql."<br><br>";
$result=mysql_query($sql);
$isAdmin=false;
while ($row = mysql_fetch_assoc($result)) {
echo "My id is ".$row['id']." and my username is ".$row['userid']." and lastly, my password is ".$row['pass']."<br>";
$isAdmin=true;
// We have correctly matched the Username and Password
// Lets give this person full access
}
if($isAdmin)
{
echo "The check passed. We have a verified admin!<br>";
}
else
{
echo "You could not be verified. Please try again...<br>";
}
mysql_close($link);
?>
<form name="exploited" method='post'>
User: <input type='text' name='user'><br>
Pass: <input type='text' name='pass'><br>
<input type='submit'>
</form>
Seems legit enough at first glance.
The user has to enter a login and password, right?
Brilliant, not enter in the following:
user: bob
pass: somePass
and submit it.
The output is as follows:
You could not be verified. Please try again...
Super! Working as expected, now lets try the actual username and password:
user: Fluffeh
pass: mypass
Amazing! Hi-fives all round, the code correctly verified an admin. It's perfect!
Well, not really. Lets say the user is a clever little person. Lets say the person is me.
Enter in the following:
user: bob
pass: n' or 1=1 or 'm=m
And the output is:
The check passed. We have a verified admin!
Congrats, you just allowed me to enter your super-protected admins only section with me entering a false username and a false password. Seriously, if you don't believe me, create the database with the code I provided, and run this PHP code - which at glance REALLY does seem to verify the username and password rather nicely.
So, in answer, THAT IS WHY YOU ARE BEING YELLED AT.
So, lets have a look at what went wrong, and why I just got into your super-admin-only-bat-cave. I took a guess and assumed that you weren't being careful with your inputs and simply passed them to the database directly. I constructed the input in a way tht would CHANGE the query that you were actually running. So, what was it supposed to be, and what did it end up being?
select id, userid, pass from users where userid='$user' and pass='$pass'
That's the query, but when we replace the variables with the actual inputs that we used, we get the following:
select id, userid, pass from users where userid='bob' and pass='n' or 1=1 or 'm=m'
See how I constructed my "password" so that it would first close the single quote around the password, then introduce a completely new comparison? Then just for safety, I added another "string" so that the single quote would get closed as expected in the code we originally had.
However, this isn't about folks yelling at you now, this is about showing you how to make your code more secure.
Okay, so what went wrong, and how can we fix it?
This is a classic SQL injection attack. One of the simplest for that matter. On the scale of attack vectors, this is a toddler attacking a tank - and winning.
So, how do we protect your sacred admin section and make it nice and secure? The first thing to do will be to stop using those really old and deprecated mysql_*
functions. I know, you followed a tutorial you found online and it works, but it's old, it's outdated and in the space of a few minutes, I have just broken past it without so much as breaking a sweat.
Now, you have the better options of using mysqli_ or PDO. I am personally a big fan of PDO, so I will be using PDO in the rest of this answer. There are pro's and con's, but personally I find that the pro's far outweigh the con's. It's portable across multiple database engines - whether you are using MySQL or Oracle or just about bloody anything - just by changing the connection string, it has all the fancy features we want to use and it is nice and clean. I like clean.
Now, lets have a look at that code again, this time written using a PDO object:
<?php
if(!empty($_POST['user']))
{
$user=$_POST['user'];
}
else
{
$user='bob';
}
if(!empty($_POST['pass']))
{
$pass=$_POST['pass'];
}
else
{
$pass='bob';
}
$isAdmin=false;
$database='prep';
$pdo=new PDO ('mysql:host=localhost;dbname=prep', 'prepared', 'example');
$sql="select id, userid, pass from users where userid=:user and pass=:password";
$myPDO = $pdo->prepare($sql, array(PDO::ATTR_CURSOR => PDO::CURSOR_FWDONLY));
if($myPDO->execute(array(':user' => $user, ':password' => $pass)))
{
while($row=$myPDO->fetch(PDO::FETCH_ASSOC))
{
echo "My id is ".$row['id']." and my username is ".$row['userid']." and lastly, my password is ".$row['pass']."<br>";
$isAdmin=true;
// We have correctly matched the Username and Password
// Lets give this person full access
}
}
if($isAdmin)
{
echo "The check passed. We have a verified admin!<br>";
}
else
{
echo "You could not be verified. Please try again...<br>";
}
?>
<form name="exploited" method='post'>
User: <input type='text' name='user'><br>
Pass: <input type='text' name='pass'><br>
<input type='submit'>
</form>
The major differences are that there are no more mysql_*
functions. It's all done via a PDO object, secondly, it is using a prepared statement. Now, what's a prepred statement you ask? It's a way to tell the database ahead of running a query, what the query is that we are going to run. In this case, we tell the database: "Hi, I am going to run a select statement wanting id, userid and pass from the table users where the userid is a variable and the pass is also a variable.".
Then, in the execute statement, we pass the database an array with all the variables that it now expects.
The results are fantastic. Lets try those username and password combinations from before again:
user: bob
pass: somePass
User wasn't verified. Awesome.
How about:
user: Fluffeh
pass: mypass
Oh, I just got a little excited, it worked: The check passed. We have a verified admin!
Now, lets try the data that a clever chap would enter to try to get past our little verification system:
user: bob
pass: n' or 1=1 or 'm=m
This time, we get the following:
You could not be verified. Please try again...
This is why you are being yelled at when posting questions - it's because people can see that your code can be bypassed wihout even trying. Please, do use this question and answer to improve your code, to make it more secure and to use functions that are current.
Lastly, this isn't to say that this is PERFECT code. There are many more things that you could do to improve it, use hashed passwords for example, ensure that when you store sensetive information in the database, you don't store it in plain text, have multiple levels of verification - but really, if you just change your old injection prone code to this, you will be WELL along the way to writing good code - and the fact that you have gotten this far and are still reading gives me a sense of hope that you will not only implement this type of code when writing your websites and applications, but that you might go out and research those other things I just mentioned - and more. Write the best code you can, not the most basic code that barely functions.
Consider using "hello".concat( "world!" )
for small number of strings in concatenation. It could be even better for performance than other approaches.
If you have more than 3 strings, than consider using StringBuilder, or just String, depending on compiler that you use.
If you're using lodash you can do something like
_.sum(_.values({ 'a': 1 , 'b': 2 , 'c':3 }))
(1) SQLite has a built in rowid
pseudo-column so this works:
sqldf("select min(rowid) rowid, id, string
from test
group by id")
giving:
rowid id string
1 1 1 A
2 3 2 B
3 5 3 C
4 7 4 D
5 9 5 E
(2) Also sqldf
itself has a row.names=
argument:
sqldf("select min(cast(row_names as real)) row_names, id, string
from test
group by id", row.names = TRUE)
giving:
id string
1 1 A
3 2 B
5 3 C
7 4 D
9 5 E
(3) A third alternative which mixes the elements of the above two might be even better:
sqldf("select min(rowid) row_names, id, string
from test
group by id", row.names = TRUE)
giving:
id string
1 1 A
3 2 B
5 3 C
7 4 D
9 5 E
Note that all three of these rely on a SQLite extension to SQL where the use of min
or max
is guaranteed to result in the other columns being chosen from the same row. (In other SQL-based databases that may not be guaranteed.)
From the first result on Google:
mailto:[email protected]_t?subject=Header&body=This%20is...%20the%20first%20line%0D%0AThis%20is%20the%20second
I suggest using the official pkg on Mac. I guess docker-compose is no longer included with docker by default: https://docs.docker.com/toolbox/toolbox_install_mac/
I have released a package called python-drawnow that provides functionality to let a figure update, typically called within a for loop, similar to Matlab's drawnow
.
An example usage:
from pylab import figure, plot, ion, linspace, arange, sin, pi
def draw_fig():
# can be arbitrarily complex; just to draw a figure
#figure() # don't call!
plot(t, x)
#show() # don't call!
N = 1e3
figure() # call here instead!
ion() # enable interactivity
t = linspace(0, 2*pi, num=N)
for i in arange(100):
x = sin(2 * pi * i**2 * t / 100.0)
drawnow(draw_fig)
This package works with any matplotlib figure and provides options to wait after each figure update or drop into the debugger.
According to Java Concurrency in Practice:
Timer
can be sensitive to changes in the system clock, ScheduledThreadPoolExecutor
isn't.Timer
has only one execution thread, so long-running task can delay other tasks. ScheduledThreadPoolExecutor
can be configured with any number of threads. Furthermore, you have full control over created threads, if you want (by providing ThreadFactory
).TimerTask
kill that one thread, thus making Timer
dead :-( ... i.e. scheduled tasks will not run anymore. ScheduledThreadExecutor
not only catches runtime exceptions, but it lets you handle them if you want (by overriding afterExecute
method from ThreadPoolExecutor
). Task which threw exception will be canceled, but other tasks will continue to run.If you can use ScheduledThreadExecutor
instead of Timer
, do so.
One more thing... while ScheduledThreadExecutor
isn't available in Java 1.4 library, there is a Backport of JSR 166 (java.util.concurrent
) to Java 1.2, 1.3, 1.4, which has the ScheduledThreadExecutor
class.
#scroll-wrap {
max-height: 50vh;
overflow-y: auto;
}
Using max-height
with vh
as the unit on the modal-body
or a wrapper div inside of the modal-body
. This will resize the height of modal-body
or the wrapping div(in this example) automatically when a user resize the window.
vh
is length unit representing 1% of the viewport size for viewport height.
Browser compatibility chart for vh
unit.
Example: https://jsfiddle.net/q3xwr53f/
To output an object to the console, you have to stringify the object first:
success:function(data){
console.log(JSON.stringify(data));
}
The property
in meta tags allows you to specify values to property fields which come from a property library. The property library (RDFa format) is specified in the head tag.
For example, to use that code you would have to have something like this in your <head
tag. <head xmlns:og="http://example.org/">
and inside the http://example.org/
there would be a specification for title
(og:title).
The tag from your example was almost definitely from the Open Graph Protocol, the purpose is to specify structured information about your website for the use of Facebook (and possibly other search engines).
Here's the steps to achieve this:
Download the sendmail.zip through this link
Open sendmail.ini and set the configuration as follows:
smtp_server=smtp.gmail.com
hostname=localhost
Access your email account. Click the Gear Tool > Settings > Forwarding and POP/IMAP > IMAP access. Click "Enable IMAP", then save your changes.
Run your WAMP Server. Enable ssl_module under Apache Module.
Next, enable php_openssl and php_sockets under PHP.
Open php.ini and configure it as the codes below. Basically, you just have to set the sendmail_path.
[mail function] ; For Win32 only. ; http://php.net/smtp ;SMTP = ; http://php.net/smtp-port ;smtp_port = 25 ; For Win32 only. ; http://php.net/sendmail-from ;sendmail_from = [email protected] ; For Unix only. You may supply arguments as well (default: "sendmail -t -i"). ; http://php.net/sendmail-path sendmail_path = "C:\wamp\sendmail\sendmail.exe -t -i"
I hope this will work for you..
#!/usr/bin/python
import re
strs = "how much for the maple syrup? $20.99? That's ricidulous!!!"
print strs
nstr = re.sub(r'[?|$|.|!]',r'',strs)
print nstr
nestr = re.sub(r'[^a-zA-Z0-9 ]',r'',nstr)
print nestr
you can add more special character and that will be replaced by '' means nothing i.e they will be removed.
Django is designed to be easely used to deliver web pages. If you are not confortable with this perhaps you should use another solution.
I'm writting the root or common operations on the model (to have the same interface) and the others on the controller of the model. If I need an operation from other model I import its controller.
This approach it's enough for me and the complexity of my applications.
Hedde's response is an example that shows the flexibility of django and python itself.
Very interesting question anyway!
Just to add to these answers (as i've recently been attempting a similar thing) - if Google spreadsheets is your spreadsheeting program of choice. Simply do these two things.
1. Strip everything out of your html file around the Table opening/closing tags and resave it as another html file.
2. Import that html file directly into google spreadsheets and you'll have your information beautifully imported (Top tip: if you used inline styles in your table, they will be imported as well!)
Saved me loads of time and figuring out different conversions.
What you could do is to remove the default "extras" on the input
:
input.wide {display:block; width:100%;padding:0;border-width:0}
This will keep the input
inside its container.
Now if you do want the borders, wrap the input
in a div
, with the borders set on the div
(that way you can remove the display:block
from the input
too). Something like:
<div style="border:1px solid gray;">
<input type="text" class="wide" />
</div>
Edit:
Another option is to, instead of removing the style from the input
, compensate for it in the wrapped div
:
input.wide {width:100%;}
<div style="padding-right:4px;padding-left:1px;margin-right:2px">
<input type="text" class="wide" />
</div>
This will give you somewhat different results in different browsers, but they will not overlap the container. The values in the div depend on how large the border is on the input
and how much space you want between the input
and the border.
Be careful if you use fat arrow functions as you will get undefined for this.id Wasted 10 minutes today wondering what the hell was going on
Comparable
is Fegan
.The method compareTo
you are overidding in it should have a Fegan
object as a parameter whereas you are casting it to a FoodItems
. Your compareTo
implementation should describe how a Fegan
compare to another Fegan
.
FoodItems
implement Comparable
aswell and copy paste your actual compareTo
logic in it.The colors changed due to the order of CSS files.
Place the custom CSS under the bootstrap CSS.
Consider this.
<script type="text/javascript">
Sys.WebForms.PageRequestManager.getInstance().add_beginRequest(BeginRequest);
function BeginRequest(sender, e) {
e.get_postBackElement().disabled = true;
}
</script>
.....
$("#testID #testID2").removeClass("test2").addClass("test3");
Because you have assigned an id to img too, you can simply do this too:
$("#testID2").removeClass("test2").addClass("test3");
And finally, you can do this too:
$("#testID img").removeClass("test2").addClass("test3");
You can use the parse
static method from Uri
//...
import android.net.Uri;
//...
Uri myUri = Uri.parse("http://stackoverflow.com")
Always remember when we compare two strings. the comparison happens on chacracter basis. so '2' > '12' is true because the comparison will happen as '2' > '1' and in alphabetical way '2' is always greater than '1' as unicode. SO it will comeout true. I hope this helps.
Check if password you are using is correct one by running below command
keytool -keypasswd -new temp123 -keystore awsdemo-keystore.jks -storepass temp123 -alias movie-service -keypass changeit
If you are getting below error then your password is wrong
keytool error: java.security.UnrecoverableKeyException: Cannot recover key
You can use CSS linear-gradient()
with rgba()
.
div {_x000D_
width: 300px;_x000D_
height: 200px;_x000D_
background: linear-gradient(rgba(255,255,255,.5), rgba(255,255,255,.5)), url("https://i.imgur.com/xnh5x47.jpg");_x000D_
}_x000D_
span {_x000D_
background: black;_x000D_
color: white;_x000D_
}
_x000D_
<div><span>Hello world.</span></div>
_x000D_
Apparently, the default List of Kotlin is immutable. To have a List that could change, one should use MutableList as below
class TempClass {
var myList: MutableList<Int>? = null
fun doSomething() {
myList = ArrayList<Int>()
myList!!.add(10)
myList!!.remove(10)
}
}
Updated Nonetheless, it is not recommended to use MutableList unless for a list that you really want to change. Refers to https://hackernoon.com/read-only-collection-in-kotlin-leads-to-better-coding-40cdfa4c6359 for how Read-only collection provides better coding.
8.3.5.8 If the type of a parameter includes a type of the form “pointer to array of unknown bound of T” or “reference to array of unknown bound of T,” the program is ill-formed
you can use something like this.It worked out for me
doc = parse('C:\\eve.xml')
my_node_list = doc.getElementsByTagName("name")
my_n_node = my_node_list[0]
my_child = my_n_node.firstChild
my_text = my_child.data
print my_text
You don't need to use a second repository - you can do commands like git checkout
and git commit
on a bare repository, if only you supply a dummy work directory using the --work-tree
option.
Prepare a dummy directory:
$ rm -rf /tmp/empty_directory
$ mkdir /tmp/empty_directory
Create the master
branch without a parent (works even on a completely empty repo):
$ cd your-bare-repository.git
$ git checkout --work-tree=/tmp/empty_directory --orphan master
Switched to a new branch 'master' <--- abort if "master" already exists
Create a commit (it can be a message-only, without adding any files, because what you need is simply having at least one commit):
$ git commit -m "Initial commit" --allow-empty --work-tree=/tmp/empty_directory
$ git branch
* master
Clean up the directory, it is still empty.
$ rmdir /tmp/empty_directory
Tested on git 1.9.1. (Specifically for OP, the posh-git is just a PowerShell wrapper for standard git.)
As shown in this example, you can apply a background to a canvas
element through CSS and this background will not be considered part the image, e.g. when fetching the contents through toDataURL()
.
Here are the contents of the example, for Stack Overflow posterity:
<!DOCTYPE HTML>
<html><head>
<meta charset="utf-8">
<title>Canvas Background through CSS</title>
<style type="text/css" media="screen">
canvas, img { display:block; margin:1em auto; border:1px solid black; }
canvas { background:url(lotsalasers.jpg) }
</style>
</head><body>
<canvas width="800" height="300"></canvas>
<img>
<script type="text/javascript" charset="utf-8">
var can = document.getElementsByTagName('canvas')[0];
var ctx = can.getContext('2d');
ctx.strokeStyle = '#f00';
ctx.lineWidth = 6;
ctx.lineJoin = 'round';
ctx.strokeRect(140,60,40,40);
var img = document.getElementsByTagName('img')[0];
img.src = can.toDataURL();
</script>
</body></html>
Yes its possible! and you can use as many colors and images as you desire, here is the right way:
body{_x000D_
/* Its, very important to set the background repeat to: no-repeat */_x000D_
background-repeat:no-repeat; _x000D_
_x000D_
background-image: _x000D_
/* 1) An image */ url(http://lorempixel.com/640/100/nature/John3-16/), _x000D_
/* 2) Gradient */ linear-gradient(to right, RGB(0, 0, 0), RGB(255, 255, 255)), _x000D_
/* 3) Color(using gradient) */ linear-gradient(to right, RGB(110, 175, 233), RGB(110, 175, 233));_x000D_
_x000D_
background-position:_x000D_
/* 1) Image position */ 0 0, _x000D_
/* 2) Gradient position */ 0 100px,_x000D_
/* 3) Color position */ 0 130px;_x000D_
_x000D_
background-size: _x000D_
/* 1) Image size */ 640px 100px,_x000D_
/* 2) Gradient size */ 100% 30px, _x000D_
/* 3) Color size */ 100% 30px;_x000D_
}
_x000D_
I believe using --no-index
is what you're looking for:
git diff [<options>] --no-index [--] <path> <path>
as mentioned in the git manual:
This form is to compare the given two paths on the filesystem. You can omit the
--no-index
option when running the command in a working tree controlled by Git and at least one of the paths points outside the working tree, or when running the command outside a working tree controlled by Git.
There is a LARGE collection of attributes you can't set in IE using .setAttribute() which includes every inline event handler.
See here for details:
http://webbugtrack.blogspot.com/2007/08/bug-242-setattribute-doesnt-always-work.html
Cast works where the actual instance of the list is an ArrayList
. If it is, say, a Vector
(which is another extension of List
) it will throw a ClassCastException.
The error when changing the definition of your HashMap is due to the elements later being processed, and that process expects a method that is defined only in ArrayList
. The exception tells you that it did not found the method it was looking for.
Create a new ArrayList
with the contents of the old one.
new ArrayList<String>(myList);
I got best solution for international phone number validation and selecting country code below library is justified me Best library for all custom UI and functionality CountryCodePickerProject
According to https://bugzilla.mozilla.org/show_bug.cgi?id=592284, the pref network.http.connection-retry-timeout controls the amount of time in ms (Milliseconds !) to wait for success on the initial connection before beginning the second one. Setting it to 0 disables the parallel connection.
You can't select a range without having first selected the sheet it is in. Try to select the sheet first and see if you still get the problem:
sourceSheetSum.Select
sourceSheetSum.Range("C3").Select
Maybe something like this:
First some test data:
DECLARE @tbl TABLE(Column1 VARCHAR(100))
INSERT INTO @tbl
SELECT '1/1' UNION ALL
SELECT '1/20' UNION ALL
SELECT '1/2'
Then like this:
SELECT
SUBSTRING(tbl.Column1,CHARINDEX('/',tbl.Column1)+1,LEN(tbl.Column1))
FROM
@tbl AS tbl
DECIMAL
has two parts: Precision
and Scale
. So part of your query will look like this:
CAST((COUNT(*) * 1.5) AS DECIMAL(8,2))
Precision
represents the number of significant digits that are stored for values.
Scale
represents the number of digits that can be stored following the decimal point.
you also do something good:
text_empty = df['column name'].str.len() > -1
df.loc[text_empty].index
The results will be the rows which are empty & it's index number.
What do you want to do with the attribute? Is it an html attribute or something of your own?
Most of the time you can simply address it as a property: want to set a title on an element? element.title = "foo"
will do it.
For your own custom JS attributes the DOM is naturally extensible (aka expando=true), the simple upshot of which is that you can do element.myCustomFlag = foo
and subsequently read it without issue.
You can do that:
function formatAMPM(date) { // This is to display 12 hour format like you asked
var hours = date.getHours();
var minutes = date.getMinutes();
var ampm = hours >= 12 ? 'pm' : 'am';
hours = hours % 12;
hours = hours ? hours : 12; // the hour '0' should be '12'
minutes = minutes < 10 ? '0'+minutes : minutes;
var strTime = hours + ':' + minutes + ' ' + ampm;
return strTime;
}
var myDate = new Date();
var displayDate = myDate.getMonth()+ '/' +myDate.getDate()+ '/' +myDate.getFullYear()+ ' ' +formatAMPM(myDate);
console.log(displayDate);
Try like this:
list($width, $height) = getimagesize('path_to_image');
Make sure that:
Also try to prefix path with $_SERVER["DOCUMENT_ROOT"]
, this helps sometimes when you are not able to read files.
my way is to write an actual batch (saying "foo.bat") to finish the job; then create another "start.bat":
@echo off
cmd /k foo.bat
I find this is extremely useful when I set up one-time environment variables.
Here's an explanation I wrote recently to help with the void of information on this attribute. http://www.marklio.com/marklio/PermaLink,guid,ecc34c3c-be44-4422-86b7-900900e451f9.aspx (Internet Archive Wayback Machine link)
To quote the most relevant bits:
[Installing .NET] v4 is “non-impactful”. It should not change the behavior of existing components when installed.
The useLegacyV2RuntimeActivationPolicy attribute basically lets you say, “I have some dependencies on the legacy shim APIs. Please make them work the way they used to with respect to the chosen runtime.”
Why don’t we make this the default behavior? You might argue that this behavior is more compatible, and makes porting code from previous versions much easier. If you’ll recall, this can’t be the default behavior because it would make installation of v4 impactful, which can break existing apps installed on your machine.
The full post explains this in more detail. At RTM, the MSDN docs on this should be better.
If this error pops up, its because there is no remote named Heroku. When you do a Heroku create, if the git remote doesn’t already exist, we automatically create one (assuming you are in a git repo). To view your remotes type in:
“git remote -v
”. # For an app called ‘appname’ you will see the following:
$ git remote -v
heroku [email protected]:appname.git (fetch)
heroku [email protected]:appname.git (push)
If you see a remote for your app, you can just “git push master
” and replace with the actual remote name.
If it’s missing, you can add the remote with the following command:
git remote add heroku [email protected]:appname.git
If you’ve already added a remote called Heroku, you may get an error like this:
fatal: remote heroku already exists.
so, then remove the existing remote and add it again with the above command:
git remote rm heroku
Hope this helps…
All three represent mapping from unique keys to values, and therefore implement the Map interface.
HashMap is a map based on hashing of the keys. It supports O(1) get/put operations. Keys must have consistent implementations of hashCode()
and equals()
for this to work.
LinkedHashMap is very similar to HashMap, but it adds awareness to the order at which items are added (or accessed), so the iteration order is the same as insertion order (or access order, depending on construction parameters).
TreeMap is a tree based mapping. Its put/get operations take O(log n) time. It requires items to have some comparison mechanism, either with Comparable or Comparator. The iteration order is determined by this mechanism.
A UNIX guy probably told you that. :)
You can use makefiles in VS, but when you do it bypasses all the built-in functionality in MSVC's IDE. Makefiles are basically the reinterpret_cast of the builder. IMO the simplest thing is just to use Solutions.
map
creates a new list by applying a function to every element of the source:
xs = [1, 2, 3]
# all of those are equivalent — the output is [2, 4, 6]
# 1. map
ys = map(lambda x: x * 2, xs)
# 2. list comprehension
ys = [x * 2 for x in xs]
# 3. explicit loop
ys = []
for x in xs:
ys.append(x * 2)
n-ary map
is equivalent to zipping input iterables together and then applying the transformation function on every element of that intermediate zipped list. It's not a Cartesian product:
xs = [1, 2, 3]
ys = [2, 4, 6]
def f(x, y):
return (x * 2, y // 2)
# output: [(2, 1), (4, 2), (6, 3)]
# 1. map
zs = map(f, xs, ys)
# 2. list comp
zs = [f(x, y) for x, y in zip(xs, ys)]
# 3. explicit loop
zs = []
for x, y in zip(xs, ys):
zs.append(f(x, y))
I've used zip
here, but map
behaviour actually differs slightly when iterables aren't the same size — as noted in its documentation, it extends iterables to contain None
.
In some cases you need a deep merge, i.e., merge the contents of fields with identical names (just like when copying folders in Windows). This function may be helpful:
/**
* Merge "source" into "target". If fields have equal name, merge them recursively.
* @return the merged object (target).
*/
public static JSONObject deepMerge(JSONObject source, JSONObject target) throws JSONException {
for (String key: JSONObject.getNames(source)) {
Object value = source.get(key);
if (!target.has(key)) {
// new value for "key":
target.put(key, value);
} else {
// existing value for "key" - recursively deep merge:
if (value instanceof JSONObject) {
JSONObject valueJson = (JSONObject)value;
deepMerge(valueJson, target.getJSONObject(key));
} else {
target.put(key, value);
}
}
}
return target;
}
/**
* demo program
*/
public static void main(String[] args) throws JSONException {
JSONObject a = new JSONObject("{offer: {issue1: value1}, accept: true}");
JSONObject b = new JSONObject("{offer: {issue2: value2}, reject: false}");
System.out.println(a+ " + " + b+" = "+JsonUtils.deepMerge(a,b));
// prints:
// {"accept":true,"offer":{"issue1":"value1"}} + {"reject":false,"offer":{"issue2":"value2"}} = {"reject":false,"accept":true,"offer":{"issue1":"value1","issue2":"value2"}}
}
Get the hash code of last commit.
git log
git revert <hash_code_from_git_log>
git push
check out in the GHR. you might get what ever you need, hope you this is useful