In my case, my Dockerfile is written like a template containing placeholders which I'm replacing with real value using my configuration file.
So I couldn't specify this file directly but pipe it into the docker build like this:
sed "s/%email_address%/$EMAIL_ADDRESS/;" ./Dockerfile | docker build -t katzda/bookings:latest . -f -;
But because of the pipe, the COPY
command didn't work. But the above way solves it by -f -
(explicitly saying file not provided). Doing only -
without the -f
flag, the context AND the Dockerfile are not provided which is a caveat.
unique random number from 0 to 9
int sum = 0;
int[] hue = new int[10];
for (int i = 0; i < 10; i++)
{
int m;
do
{
m = rand.Next(0, 10);
} while (hue.Contains(m) && sum != 45);
if (!hue.Contains(m))
{
hue[i] = m;
sum = sum + m;
}
}
If this isn't a good solution for any reason, please let me know. It worked fine for me.
What I did is to hide the Sidebar and then make appear the navbar with breakpoints
@media screen and (max-width: 771px) {
#fixed-sidebar {
display: none;
}
#navbar-superior {
display: block !important;
}
}
I used the copy command with the /z switch for copying over network drives. Also works for copying between local drives. Tested on XP Home edition.
In C/C++ you have header files (*.H). There you declare your functions/classes. So for example you will have to #include "second.h"
to your main.cpp
file.
In second.h
you just declare like this void yourFunction();
In second.cpp
you implement it like
void yourFunction() {
doSomethng();
}
Don't forget to #include "second.h"
also in the beginning of second.cpp
Hope this helps:)
Well, the method in this asnwer method did not work for me. I don't know, maybe this is a Python3 (I am using the 3.4 version) or gmail related issue, but after some tries, the solution that worked for me, was the line
s.send_message(msg)
instead of
s.sendmail(sender, recipients, msg.as_string())
I would like to point out that TypeScript does not provide a direct mechanism for dynamically testing whether an object implements a particular interface.
Instead, TypeScript code can use the JavaScript technique of checking whether an appropriate set of members are present on the object. For example:
var obj : any = new Foo();
if (obj.someInterfaceMethod) {
...
}
In Kotlin simply put your code in runOnUiThread activity method
runOnUiThread{
// write your code here, for example
val task = Runnable {
Handler().postDelayed({
var smzHtcList = mDb?.smzHtcReferralDao()?.getAll()
tv_showSmzHtcList.text = smzHtcList.toString()
}, 10)
}
mDbWorkerThread.postTask(task)
}
In case entire entity is being return, better solution in spring JPA is use @Query(value = "from entity where Id in :ids")
This return entity type rather than object type
I always use parseInt, but beware of leading zeroes that will force it into octal mode.
Check file_get_contents
PHP Manual return value. If the value is FALSE
then it could not read the file. If the value is NULL
then the function itself is disabled.
To learn more what might gone wrong with the file_get_contents
operation you must enable error reporting and the display of errors to actually read them.
# Enable Error Reporting and Display:
error_reporting(~0);
ini_set('display_errors', 1);
You can get more details about the why the call is failing by checking the INI values on your server. One value the directly effects the file_get_contents
function is allow_url_fopen
. You can do this by running the following code. You should note, that if it reports that fopen is not allowed, then you'll have to ask your provider to change this setting on your server in order for any code that require this function to work with URLs.
<html>
<head>
<title>Test File</title>
<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false">
</script>
</head>
<body>
<?php
# Enable Error Reporting and Display:
error_reporting(~0);
ini_set('display_errors', 1);
$adr = 'Sydney+NSW';
echo $adr;
$url = "http://maps.googleapis.com/maps/api/geocode/json?address=$adr&sensor=false";
echo '<p>'.$url.'</p>';
$jsonData = file_get_contents($url);
print '<p>', var_dump($jsonData), '</p>';
# Output information about allow_url_fopen:
if (ini_get('allow_url_fopen') == 1) {
echo '<p style="color: #0A0;">fopen is allowed on this host.</p>';
} else {
echo '<p style="color: #A00;">fopen is not allowed on this host.</p>';
}
# Decide what to do based on return value:
if ($jsonData === FALSE) {
echo "Failed to open the URL ", htmlspecialchars($url);
} elseif ($jsonData === NULL) {
echo "Function is disabled.";
} else {
echo $jsonData;
}
?>
</body>
</html>
If all of this fails, it might be due to the use of short open tags, <?
. The example code in this answer has been therefore changed to make use of <?php
to work correctly as this is guaranteed to work on in all version of PHP, no matter what configuration options are set. To do so for your own script, just replace <?
or <?php
.
No. Java doesn't support default parameters like C++. You need to define a different method:
public int doSomething()
{
return doSomething(value1, value2);
}
DateTime
structure stores only one value, not range of values. MinValue
and MaxValue
are static fields, which hold range of possible values for instances of DateTime
structure. These fields are static and do not relate to particular instance of DateTime
. They relate to DateTime
type itself.
Suggested reading: static (C# Reference)
UPDATE: Getting month range:
DateTime date = ...
var firstDayOfMonth = new DateTime(date.Year, date.Month, 1);
var lastDayOfMonth = firstDayOfMonth.AddMonths(1).AddDays(-1);
I know that this question is from a while ago, but I wanted to add an answer that I believe expands upon the original question. The addendum to this question was to write the mode method without relying upon a preset range (in this case, 0 through 100). I have written a version for mode that uses the range of values in the original array to generate the count array.
public static int mode(int[] list) {
//Initialize max and min value variable as first value of list
int maxValue = list[0];
int minValue = list[0];
//Finds maximum and minimum values in list
for (int i = 1; i < list.length; i++) {
if (list[i] > maxValue) {
maxValue = list[i];
}
if (list[i] < minValue) {
minValue = list[i];
}
}
//Initialize count array with (maxValue - minValue + 1) elements
int[] count = new int[maxValue - minValue + 1];
//Tally counts of values from list, store in array count
for (int i = 0; i < list.length; i++) {
count[list[i] - minValue]++; //Increment counter index for current value of list[i] - minValue
}
//Find max value in count array
int max = count[0]; //Initialize max variable as first value of count
for (int i = 1; i < count.length; i++) {
if (count[i] > max) {
max = count[i];
}
}
//Find first instance where max occurs in count array
for (int i = 0; i < count.length; i++) {
if (count[i] == max) {
return i + minValue; //Returns index of count adjusted for min/max list values - this is the mode value in list
}
}
return -1; //Only here to force compilation, never actually used
}
Old question, but heavily referenced ... I think most people use other methods, but there is infact a to_hash
method, it has to be setup right. Generally, pluck is a better answer after rails 4 ... answering this mainly because I had to search a bunch to find this thread or anything useful & assuming others are hitting the same problem...
Note: not recommending this for everyone, but edge cases!
From the ruby on rails api ... http://api.rubyonrails.org/classes/ActiveRecord/Result.html ...
This class encapsulates a result returned from calling #exec_query on any database connection adapter. For example:
result = ActiveRecord::Base.connection.exec_query('SELECT id, title, body FROM posts')
result # => #<ActiveRecord::Result:0xdeadbeef>
...
# Get an array of hashes representing the result (column => value):
result.to_hash
# => [{"id" => 1, "title" => "title_1", "body" => "body_1"},
{"id" => 2, "title" => "title_2", "body" => "body_2"},
...
] ...
The Location directive system is
Like you want to forward all request which start /static
and your data present in /var/www/static
So a simple method is separated last folder from full path , that means
Full path : /var/www/static
Last Path : /static
and First path : /var/www
location <lastPath> {
root <FirstPath>;
}
So lets see what you did mistake and what is your solutions
Your Mistake :
location /static {
root /web/test.example.com/static;
}
Your Solutions :
location /static {
root /web/test.example.com;
}
First off, saying Objective-C is "insane" is humorous- I have the Bjarne Stroustrup C++ book sitting by my side which clocks in at 1020 pages. Apple's PDF on Objective-C is 141.
If you want to use UIKit it will be very, very difficult for you to do anything in C++. Any serious iPhone app that conforms to Apple's UI will need it's UI portions to be written in Objective-C. Only if you're writing an OpenGL game can you stick almost entirely to C/C++.
For future readers!
Starting from material components android 1.2.0-alpha01, you have slider
component
ex:
<com.google.android.material.slider.Slider
android:id="@+id/slider"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:valueFrom="20f"
android:valueTo="70f"
android:stepSize="10" />
I use ".hpp" for C++ headers and ".h" for C language headers. The ".hpp" reminds me that the file contains statements for the C++ language which are not valid for the C language, such as "class" declarations.
Here's how I solved the problem today after hours of trying all of these different solutions - (for anyone looking for another way still).
Open 2 instances of cmd at your quickstart dir:
window #1:
npm run build:watch
then...
window #2:
npm run serve
It will then open in the browser and work as expected
To answer the final question (the others seem thoroughly answered above), "Should I bubble up the exact exception or mask it using Exception?"
I am assuming you mean something like this:
public void myMethod() throws Exception {
// ... something that throws FileNotFoundException ...
}
No, always declare the most precise exception possible, or a list of such. The exceptions you declare your method as capable of throwing are a part of the contract between your method and the caller. Throwing "FileNotFoundException"
means that it is possible the file name isn't valid and the file will not be found; the caller will need to handle that intelligently. Throwing Exception
means "Hey, sh*t happens. Deal." Which is a very poor API
.
In the comments on the first article there are some examples where "throws Exception
" is a valid and reasonable declaration, but that's not the case for most "normal
" code you will ever write.
As stated in the above answers, it's always a good practice to initialize the variables, but if you have something which you don't know what value should it takes, and you want to leave it uninitialized so you have to make sure that you are updating it before using it.
For example:
Assume we have double _bmi;
and you don't know what value should it takes, so you can leave it as it is, but before using it, you have to update its value first like calling a function that calculating BMI like follows:
String calculateBMI (){
_bmi = weight / pow( height/100, 2);
return _bmi.toStringAsFixed(1);}
or whatever, what I mean is, you can leave the variable as it is, but before using it make sure you have initialized it using whatever the method you are using.
Just drop the option v
.
-v
is for verbose. If you don't use it then it won't display:
tar -zxf tmp.tar.gz -C ~/tmp1
Resizing the default widget doesn’t work in all browsers, but you can make custom radio buttons with JavaScript. One of the ways is to create hidden radio buttons and then place your own images on your page. Clicking on these images changes the images (replaces the clicked image with an image with a radio button in a selected state and replaces the other images with radio buttons in an unselected state) and selects the new radio button.
Anyway, there is documentation on this subject. For example, read this: Styling Checkboxes and Radio Buttons with CSS and JavaScript.
The problem here is that you are including commands.c
in commands.h
before the function prototype. Therefore, the C pre-processor inserts the content of commands.c
into commands.h
before the function prototype. commands.c
contains the function definition. As a result, the function definition ends up before than the function declaration causing the error.
The content of commands.h
after the pre-processor phase looks like this:
#ifndef COMMANDS_H_
#define COMMANDS_H_
// function definition
void f123(){
}
// function declaration
void f123();
#endif /* COMMANDS_H_ */
This is an error because you can't declare a function after its definition in C. If you swapped #include "commands.c"
and the function declaration the error shouldn't happen because, now, the function prototype comes before the function declaration.
However, including a .c
file is a bad practice and should be avoided. A better solution for this problem would be to include commands.h
in commands.c
and link the compiled version of command to the main file. For example:
commands.h
#ifndef COMMANDS_H_
#define COMMANDS_H_
void f123(); // function declaration
#endif
commands.c
#include "commands.h"
void f123(){} // function definition
DECLARE @q nvarchar(4000)
SET @q = 'DECLARE @tmp TABLE (code VARCHAR(50), mount MONEY)
INSERT INTO @tmp
(
code,
mount
)
SELECT coa_code,
amount
FROM T_Ledger_detail
SELECT *
FROM @tmp'
EXEC sp_executesql @q
If you want in dynamic query
If you are using Cloudflare then this is always the Cloudflare IP address from the node which is serving you.
In this case you get the real IP address from the $_SERVER['HTTP_FORWARDED_FOR']
entry as described in the the other answers.
The java design of the "enhanced for loop" was to not expose the iterator to code, but the only way to safely remove an item is to access the iterator. So in this case you have to do it old school:
for(Iterator<String> i = names.iterator(); i.hasNext();) {
String name = i.next();
//Do Something
i.remove();
}
If in the real code the enhanced for loop is really worth it, then you could add the items to a temporary collection and call removeAll on the list after the loop.
EDIT (re addendum): No, changing the list in any way outside the iterator.remove() method while iterating will cause problems. The only way around this is to use a CopyOnWriteArrayList, but that is really intended for concurrency issues.
The cheapest (in terms of lines of code) way to remove duplicates is to dump the list into a LinkedHashSet (and then back into a List if you need). This preserves insertion order while removing duplicates.
If you no longer need the hided elements, just use element.remove()
instead of element.style.display = 'none';
.
The following approach is correct:
<context:component-scan base-package="x.y.z.service, x.y.z.controller" />
Note that the error complains about x.y.z.dao.daoservice.LoginDAO
, which is not in the packages mentioned above, perhaps you forgot to add it:
<context:component-scan base-package="x.y.z.service, x.y.z.controller, x.y.z.dao" />
Your problem is that, if the user clicks cancel, operationType
is null and thus throws a NullPointerException. I would suggest that you move
if (operationType.equalsIgnoreCase("Q"))
to the beginning of the group of if statements, and then change it to
if(operationType==null||operationType.equalsIgnoreCase("Q")).
This will make the program exit just as if the user had selected the quit option when the cancel button is pushed.
Then, change all the rest of the ifs to else ifs. This way, once the program sees whether or not the input is null, it doesn't try to call anything else on operationType. This has the added benefit of making it more efficient - once the program sees that the input is one of the options, it won't bother checking it against the rest of them.
For remote registry you have to use .NET with powershell 2.0
$w32reg = [Microsoft.Win32.RegistryKey]::OpenRemoteBaseKey('LocalMachine',$computer1)
$keypath = 'SOFTWARE\Veritas\NetBackup\CurrentVersion'
$netbackup = $w32reg.OpenSubKey($keypath)
$NetbackupVersion1 = $netbackup.GetValue('PackageVersion')
NOTE: I am using Mi(Xiaomi) mobile (Redmi K20 Pro) which is running on Android 10
You need to do 2 things to show your device listing.
1) Go to your Android Studio --> File --> Project Structure and choose Project SDK from the options. I chose the latest one from the menu.
2) When you connect your real device to your PC/Laptop, make sure you choose Transfer photos (PTP) mode
.
NOTE: DON'T CHOOSE File transfer mode. It will not work.
After doing the above 2 things, you can check the status of your device availability by writing flutter devices
on command prompt.
I hope it shows your mobile device.
Just a wild guess: (not much to go on) but I have had similar problems when, for example, I was using the IIS rewrite module on my local machine (and it worked fine), but when I uploaded to a host that did not have that add-on module installed, I would get a 500 error with very little to go on - sounds similar. It drove me crazy trying to find it.
So make sure whatever options/addons that you might have and be using locally in IIS are also installed on the host.
Similarly, make sure you understand everything that is being referenced/used in your web.config - that is likely the problem area.
Here's a quick function I came up with to do the job. If anyone has a simpler approach, feel free to share!
function zerofill(number, length) {
// Setup
var result = number.toString();
var pad = length - result.length;
while(pad > 0) {
result = '0' + result;
pad--;
}
return result;
}
You can use this method to get the digit:
public int digitToValue(char c) {
(c >= '&' && c <= '9') return c - '0';
else if (c >= 'A' && c <= 'F') return 10 + c - 'A';
else if (c >= 'a' && c <= 'f') return 10 + c - 'a';
return -1;
}
One reason to use an explicite Platform.runLater() could be that you bound a property in the ui to a service (result) property. So if you update the bound service property, you have to do this via runLater():
In UI thread also known as the JavaFX Application thread:
...
listView.itemsProperty().bind(myListService.resultProperty());
...
in Service implementation (background worker):
...
Platform.runLater(() -> result.add("Element " + finalI));
...
@Override
public void onBackPressed() {
new AlertDialog.Builder(this)
.setMessage("Are you sure you want to exit?")
.setCancelable(false)
.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
ExampleActivity.super.onBackPressed();
}
})
.setNegativeButton("No", null)
.show();
}
SELECT t1.* FROM table t1 JOIN table t2 ON t1.Id=t2.Id WHERE t1.C4=t2.C4;
Giving Accurate Result for me.
As the instruction said "might need gpg2"
In mac, you can try install it with homebrew
$ brew install gpg2
There was recently a node module that was made that solves this problem so you don't have to create another component.
https://github.com/Ajackster/react-native-global-props
https://www.npmjs.com/package/react-native-global-props
The documentation states that in your highest order component, import the setCustomText
function like so.
import { setCustomText } from 'react-native-global-props';
Then, create the custom styling/props you want for the react-native Text
component. In your case, you'd like fontFamily to work on every Text
component.
const customTextProps = {
style: {
fontFamily: yourFont
}
}
Call the setCustomText
function and pass your props/styles into the function.
setCustomText(customTextProps);
And then all react-native Text
components will have your declared fontFamily along with any other props/styles you provide.
See the documentation for jQuery Event Target. Using the target property of the event object, you can detect where the click originated within the #menu_content
element and, if so, terminate the click handler early. You will have to use .closest()
to handle cases where the click originated in a descendant of #menu_content
.
$(document).click(function(e){
// Check if click was triggered on or within #menu_content
if( $(e.target).closest("#menu_content").length > 0 ) {
return false;
}
// Otherwise
// trigger your click function
});
Case 1 : Yes, this works fine.
Case 2 : This will fail with the error ORA-01441 : cannot decrease column length because some value is too big.
Share and enjoy.
I use the Android KeyStore to encrypt the password using RSA in ECB mode and then save it in the SharedPreferences.
When I want the password back I read the encrypted one from the SharedPreferences and decrypt it using the KeyStore.
With this method you generate a public/private Key-pair where the private one is safely stored and managed by Android.
Here is a link on how to do this: Android KeyStore Tutorial
Here is a bit specific example, I would like to show. Say you have many duplicate entries in some of your rows. If you have string entries you could easily use string methods to find all indexes to drop.
ind_drop = df[df['column_of_strings'].apply(lambda x: x.startswith('Keyword'))].index
And now to drop those rows using their indexes
new_df = df.drop(ind_drop)
Russian Edition
offers CSV
, CSV (Macintosh)
and CSV (DOS)
.
When saving in plain CSV
, it uses windows-1251
.
I just tried to save French word Résumé
along with the Russian text, it saved it in HEX
like 52 3F 73 75 6D 3F
, 3F
being the ASCII
code for question mark
.
When I opened the CSV
file, the word, of course, became unreadable (R?sum?
)
This has worked for me in both SQL Server 2005 and 2008:
SELECT * from TABLE
WHERE FIELDNAME > {ts '2013-02-01 15:00:00.001'}
AND FIELDNAME < {ts '2013-08-05 00:00:00.000'}
Use this one-liner for any primitive number class including double
and float
:
a += (b - (b = a));
For example:
double a = 1.41;
double b = 0;
a += (b - (b = a));
System.out.println("a = " + a + ", b = " + b);
Output is a = 0.0, b = 1.41
In my case, I've a sampleViewController
's view added as a subview, then tries to present a popover from the view of sampleViewController
(here self
instead a UIViewController
instance):
[self.view addSubview:sampleViewController.view];
The right way should be below:
// make sure the vc has been added as a child view controller as well
[self addChildViewController:sampleViewController];
[self.view addSubview:sampleViewController.view];
[sampleViewController didMoveToParentViewController:self];
B.t.w., this also works for the case that present a popover form a tableview cell, you just need to make sure the tableview controller has been added as child view controller as well.
emulator-arm.exe error, couldn't run. Problem was that my laptop has 2 graphic cards and was selected only one (the performance one) from Nvidia 555M. By selecting the other graphic card from Nvidia mediu,(selected base Intel card) the emulator started!
also, you can fetch all data and count in the blade file. for example:
your code in the controller
$posts = Post::all();
return view('post', compact('posts'));
your code in the blade file.
{{ $posts->count() }}
finally, you can see the total of your posts.
This will tell you not only that it exists but also how many times it appears:
a = ['Cat', 'Dog', 'Bird']
a.count("Dog")
#=> 1
From documentation of the warnings
module:
#!/usr/bin/env python -W ignore::DeprecationWarning
If you're on Windows: pass -W ignore::DeprecationWarning
as an argument to Python. Better though to resolve the issue, by casting to int.
(Note that in Python 3.2, deprecation warnings are ignored by default.)
Building on a previous answer by @user1172173 that addressed SQL Injection vulnerabilities, see below:
CREATE PROCEDURE [dbo].[spQ_SomeColumnByCustomerId](
@CustomerId int,
@SchemaName varchar(20),
@TableName nvarchar(200)) AS
SET Nocount ON
DECLARE @SQLQuery AS NVARCHAR(500)
DECLARE @ParameterDefinition AS NVARCHAR(100)
DECLARE @Table_ObjectId int;
DECLARE @Schema_ObjectId int;
DECLARE @Schema_Table_SecuredFromSqlInjection NVARCHAR(125)
SET @Table_ObjectId = OBJECT_ID(@TableName)
SET @Schema_ObjectId = SCHEMA_ID(@SchemaName)
SET @Schema_Table_SecuredFromSqlInjection = SCHEMA_NAME(@Schema_ObjectId) + '.' + OBJECT_NAME(@Table_ObjectId)
SET @SQLQuery = N'SELECT TOP 1 ' + @Schema_Table_SecuredFromSqlInjection + '.SomeColumn
FROM dbo.Customer
INNER JOIN ' + @Schema_Table_SecuredFromSqlInjection + '
ON dbo.Customer.Customerid = ' + @Schema_Table_SecuredFromSqlInjection + '.CustomerId
WHERE dbo.Customer.CustomerID = @CustomerIdParam
ORDER BY ' + @Schema_Table_SecuredFromSqlInjection + '.SomeColumn DESC'
SET @ParameterDefinition = N'@CustomerIdParam INT'
EXECUTE sp_executesql @SQLQuery, @ParameterDefinition, @CustomerIdParam = @CustomerId; RETURN
You can revert by migrating to the previous migration.
For example use below command:
./manage.py migrate example_app one_left_to_the_last_migration
then delete last_migration
file.
Your regex pattern needs to be in delimiters:
$numpattern="/^([0-9]+)$/";
Edit: For a better approximation of Alejandro's answer, see below.
I know this is an old question, but wanted to add something to Alejandro's anwser: If you want a nice smoothed image without using py-sphviewer you can instead use np.histogram2d
and apply a gaussian filter (from scipy.ndimage.filters
) to the heatmap:
import numpy as np
import matplotlib.pyplot as plt
import matplotlib.cm as cm
from scipy.ndimage.filters import gaussian_filter
def myplot(x, y, s, bins=1000):
heatmap, xedges, yedges = np.histogram2d(x, y, bins=bins)
heatmap = gaussian_filter(heatmap, sigma=s)
extent = [xedges[0], xedges[-1], yedges[0], yedges[-1]]
return heatmap.T, extent
fig, axs = plt.subplots(2, 2)
# Generate some test data
x = np.random.randn(1000)
y = np.random.randn(1000)
sigmas = [0, 16, 32, 64]
for ax, s in zip(axs.flatten(), sigmas):
if s == 0:
ax.plot(x, y, 'k.', markersize=5)
ax.set_title("Scatter plot")
else:
img, extent = myplot(x, y, s)
ax.imshow(img, extent=extent, origin='lower', cmap=cm.jet)
ax.set_title("Smoothing with $\sigma$ = %d" % s)
plt.show()
Produces:
The scatter plot and s=16 plotted on top of eachother for Agape Gal'lo (click for better view):
One difference I noticed with my gaussian filter approach and Alejandro's approach was that his method shows local structures much better than mine. Therefore I implemented a simple nearest neighbour method at pixel level. This method calculates for each pixel the inverse sum of the distances of the n
closest points in the data. This method is at a high resolution pretty computationally expensive and I think there's a quicker way, so let me know if you have any improvements.
Update: As I suspected, there's a much faster method using Scipy's scipy.cKDTree
. See Gabriel's answer for the implementation.
Anyway, here's my code:
import numpy as np
import matplotlib.pyplot as plt
import matplotlib.cm as cm
def data_coord2view_coord(p, vlen, pmin, pmax):
dp = pmax - pmin
dv = (p - pmin) / dp * vlen
return dv
def nearest_neighbours(xs, ys, reso, n_neighbours):
im = np.zeros([reso, reso])
extent = [np.min(xs), np.max(xs), np.min(ys), np.max(ys)]
xv = data_coord2view_coord(xs, reso, extent[0], extent[1])
yv = data_coord2view_coord(ys, reso, extent[2], extent[3])
for x in range(reso):
for y in range(reso):
xp = (xv - x)
yp = (yv - y)
d = np.sqrt(xp**2 + yp**2)
im[y][x] = 1 / np.sum(d[np.argpartition(d.ravel(), n_neighbours)[:n_neighbours]])
return im, extent
n = 1000
xs = np.random.randn(n)
ys = np.random.randn(n)
resolution = 250
fig, axes = plt.subplots(2, 2)
for ax, neighbours in zip(axes.flatten(), [0, 16, 32, 64]):
if neighbours == 0:
ax.plot(xs, ys, 'k.', markersize=2)
ax.set_aspect('equal')
ax.set_title("Scatter Plot")
else:
im, extent = nearest_neighbours(xs, ys, resolution, neighbours)
ax.imshow(im, origin='lower', extent=extent, cmap=cm.jet)
ax.set_title("Smoothing over %d neighbours" % neighbours)
ax.set_xlim(extent[0], extent[1])
ax.set_ylim(extent[2], extent[3])
plt.show()
Result:
I did make some adjustment to make the image aligned at center horizontal:
// the space between the image and text
let spacing = CGFloat(36.0);
// lower the text and push it left so it appears centered
// below the image
let imageSize = tutorialButton.imageView!.frame.size;
tutorialButton.titleEdgeInsets = UIEdgeInsetsMake(
0, -CGFloat(imageSize.width), -CGFloat(imageSize.height + spacing), 0.0);
// raise the image and push it right so it appears centered
// above the text
let titleSize = tutorialButton.titleLabel!.frame.size;
tutorialButton.imageEdgeInsets = UIEdgeInsetsMake(
-CGFloat(titleSize.height + spacing), CGFloat((tutorialButton.frame.width - imageSize.width) / 2), 0.0, -CGFloat(titleSize.width));
It's your choice. There are basically three ways in a Java web application archive (WAR):
So that you can load it by ClassLoader#getResourceAsStream()
with a classpath-relative path:
ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
InputStream input = classLoader.getResourceAsStream("foo.properties");
// ...
Properties properties = new Properties();
properties.load(input);
Here foo.properties
is supposed to be placed in one of the roots which are covered by the default classpath of a webapp, e.g. webapp's /WEB-INF/lib
and /WEB-INF/classes
, server's /lib
, or JDK/JRE's /lib
. If the propertiesfile is webapp-specific, best is to place it in /WEB-INF/classes
. If you're developing a standard WAR project in an IDE, drop it in src
folder (the project's source folder). If you're using a Maven project, drop it in /main/resources
folder.
You can alternatively also put it somewhere outside the default classpath and add its path to the classpath of the appserver. In for example Tomcat you can configure it as shared.loader
property of Tomcat/conf/catalina.properties
.
If you have placed the foo.properties
it in a Java package structure like com.example
, then you need to load it as below
ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
InputStream input = classLoader.getResourceAsStream("com/example/foo.properties");
// ...
Note that this path of a context class loader should not start with a /
. Only when you're using a "relative" class loader such as SomeClass.class.getClassLoader()
, then you indeed need to start it with a /
.
ClassLoader classLoader = getClass().getClassLoader();
InputStream input = classLoader.getResourceAsStream("/com/example/foo.properties");
// ...
However, the visibility of the properties file depends then on the class loader in question. It's only visible to the same class loader as the one which loaded the class. So, if the class is loaded by e.g. server common classloader instead of webapp classloader, and the properties file is inside webapp itself, then it's invisible. The context class loader is your safest bet so you can place the properties file "everywhere" in the classpath and/or you intend to be able to override a server-provided one from the webapp on.
So that you can load it by ServletContext#getResourceAsStream()
with a webcontent-relative path:
InputStream input = getServletContext().getResourceAsStream("/WEB-INF/foo.properties");
// ...
Note that I have demonstrated to place the file in /WEB-INF
folder, otherwise it would have been public accessible by any webbrowser. Also note that the ServletContext
is in any HttpServlet
class just accessible by the inherited GenericServlet#getServletContext()
and in Filter
by FilterConfig#getServletContext()
. In case you're not in a servlet class, it's usually just injectable via @Inject
.
So that you can load it the usual java.io
way with an absolute local disk file system path:
InputStream input = new FileInputStream("/absolute/path/to/foo.properties");
// ...
Note the importance of using an absolute path. Relative local disk file system paths are an absolute no-go in a Java EE web application. See also the first "See also" link below.
Just weigh the advantages/disadvantages in your own opinion of maintainability.
If the properties files are "static" and never needs to change during runtime, then you could keep them in the WAR.
If you prefer being able to edit properties files from outside the web application without the need to rebuild and redeploy the WAR every time, then put it in the classpath outside the project (if necessary add the directory to the classpath).
If you prefer being able to edit properties files programmatically from inside the web application using Properties#store()
method, put it outside the web application. As the Properties#store()
requires a Writer
, you can't go around using a disk file system path. That path can in turn be passed to the web application as a VM argument or system property. As a precaution, never use getRealPath()
. All changes in deploy folder will get lost on a redeploy for the simple reason that the changes are not reflected back in original WAR file.
In Spring MVC you get the HtppServletResponce object by default .
@RequestMapping("/myPath.htm")
public ModelAndView add(HttpServletRequest request,
HttpServletResponse response) throws Exception{
//Do service call passing the response
return new ModelAndView("CustomerAddView");
}
//Service code
Cookie myCookie =
new Cookie("name", "val");
response.addCookie(myCookie);
Easiest method is to type:
sudo /bin/sh example.sh
l = [1, 2, 3]
print '\n'.join(['%i: %s' % (n, l[n]) for n in xrange(len(l))])
I'm not sure how much of your "slowness" will be due to the loop you're doing to find entries with particular attribute values, but you can remove this loop by being more specific with your filter. Try this page for some guidance ... Search Filter Syntax
Fitting a moving average to your data would smooth out the noise, see this this answer for how to do that.
If you'd like to use LOWESS to fit your data (it's similar to a moving average but more sophisticated), you can do that using the statsmodels library:
import numpy as np
import pylab as plt
import statsmodels.api as sm
x = np.linspace(0,2*np.pi,100)
y = np.sin(x) + np.random.random(100) * 0.2
lowess = sm.nonparametric.lowess(y, x, frac=0.1)
plt.plot(x, y, '+')
plt.plot(lowess[:, 0], lowess[:, 1])
plt.show()
Finally, if you know the functional form of your signal, you could fit a curve to your data, which would probably be the best thing to do.
It is possible to apply the specific GridView / Table layout via custom CSS rules (as it was discussed in the <table><tbody> scrollable? thread) to fix GridView's Header. However, this approach will not work in all browsers. The 3-rd ASP.NET GridView controls (such as the ASPxGridView from DevExpress component vendor provide this functionality.
Check also the following CodeProject solutions:
This is an altered version of @Martin Thoma's answer for GTK3. I found that the original solution resulted in the process never ending and my terminal hung when I called the script. Changing the script to the following resolved the issue for me.
#!/usr/bin/python3
from gi.repository import Gtk, Gdk
import sys
from time import sleep
class Hello(Gtk.Window):
def __init__(self):
super(Hello, self).__init__()
clipboardText = sys.argv[1]
clipboard = Gtk.Clipboard.get(Gdk.SELECTION_CLIPBOARD)
clipboard.set_text(clipboardText, -1)
clipboard.store()
def main():
Hello()
if __name__ == "__main__":
main()
You will probably want to change what clipboardText gets assigned to, in this script it is assigned to the parameter that the script is called with.
On a fresh ubuntu 16.04 installation, I found that I had to install the python-gobject
package for it to work without a module import error.
Try this, at the end of the each loop, ids array will contain all the hexcodes.
var ids = [];
$(document).ready(function($) {
var $div = $("<div id='hexCodes'></div>").appendTo(document.body), code;
$(".color_cell").each(function() {
code = $(this).attr('id');
ids.push(code);
$div.append(code + "<br />");
});
});
The problem is with Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");
this line. The Class qualified name is wrong
It is sqlserver.jdbc
not jdbc.sqlserver
You can change from the property of every item.
That's because abc
is undefined at the moment of the template rendering. You can use safe navigation operator (?
) to "protect" template until HTTP call is completed:
{{abc?.xyz?.name}}
You can read more about safe navigation operator here.
Update:
Safe navigation operator can't be used in arrays, you will have to take advantage of NgIf
directive to overcome this problem:
<div *ngIf="arr && arr.length > 0">
{{arr[0].name}}
</div>
Read more about NgIf
directive here.
Something else to consider when this type of error is encountered:
I was running into this error message and found this post helpful. Turns out in my case I had overridden an __init__()
where there was object inheritance.
The inherited example is rather long, so I'll skip to a more simple example that doesn't use inheritance:
class MyBadInitClass:
def ___init__(self, name):
self.name = name
def name_foo(self, arg):
print(self)
print(arg)
print("My name is", self.name)
class MyNewClass:
def new_foo(self, arg):
print(self)
print(arg)
my_new_object = MyNewClass()
my_new_object.new_foo("NewFoo")
my_bad_init_object = MyBadInitClass(name="Test Name")
my_bad_init_object.name_foo("name foo")
Result is:
<__main__.MyNewClass object at 0x033C48D0>
NewFoo
Traceback (most recent call last):
File "C:/Users/Orange/PycharmProjects/Chapter9/bad_init_example.py", line 41, in <module>
my_bad_init_object = MyBadInitClass(name="Test Name")
TypeError: object() takes no parameters
PyCharm didn't catch this typo. Nor did Notepad++ (other editors/IDE's might).
Granted, this is a "takes no parameters" TypeError, it isn't much different than "got two" when expecting one, in terms of object initialization in Python.
Addressing the topic: An overloading initializer will be used if syntactically correct, but if not it will be ignored and the built-in used instead. The object won't expect/handle this and the error is thrown.
In the case of the sytax error: The fix is simple, just edit the custom init statement:
def __init__(self, name):
self.name = name
If you truly want to discard the commits you've made locally, i.e. never have them in the history again, you're not asking how to pull - pull means merge, and you don't need to merge. All you need do is this:
# fetch from the default remote, origin
git fetch
# reset your current branch (master) to origin's master
git reset --hard origin/master
I'd personally recommend creating a backup branch at your current HEAD first, so that if you realize this was a bad idea, you haven't lost track of it.
If on the other hand, you want to keep those commits and make it look as though you merged with origin, and cause the merge to keep the versions from origin only, you can use the ours
merge strategy:
# fetch from the default remote, origin
git fetch
# create a branch at your current master
git branch old-master
# reset to origin's master
git reset --hard origin/master
# merge your old master, keeping "our" (origin/master's) content
git merge -s ours old-master
I'm new to java and I'm taking up your question as a challenge to improve my knowledge as well so please forgive me if this does not answer your question well:
import java.util.ArrayList;
import java.util.List;
public class PalindromeRecursiveBoolean {
public static boolean isPalindrome(String str) {
str = str.toUpperCase();
char[] strChars = str.toCharArray();
List<Character> word = new ArrayList<>();
for (char c : strChars) {
word.add(c);
}
while (true) {
if ((word.size() == 1) || (word.size() == 0)) {
return true;
}
if (word.get(0) == word.get(word.size() - 1)) {
word.remove(0);
word.remove(word.size() - 1);
} else {
return false;
}
}
}
}
The only string manipulation is changing the string to uppercase so that you can enter something like 'XScsX'
IE doesn't allow this anymore (since Version 10, I believe) and will ignore such scripts. FF and Chrome still tolerate them, but there are chances that some day they will drop this as non-standard.
Warning: Never ever refer to w3schools for learning purposes. They have so many mistakes in their tutorials.
According to the mysqli_query documentation, the first parameter must be a connection string:
$link = mysqli_connect("localhost","root","","web_table");
mysqli_query($link,"INSERT INTO web_formitem (`ID`, `formID`, `caption`, `key`, `sortorder`, `type`, `enabled`, `mandatory`, `data`)
VALUES (105, 7, 'Tip izdelka (6)', 'producttype_6', 42, 5, 1, 0, 0)")
or die(mysqli_error($link));
Note: Add backticks ` for column names in your insert query as some of your column names are reserved words.
I got the problem when instelled MS SQL 2012
with IngegrationService
, the MS Visual Studio 2010 (Isolated) was installed from sql installer .
This VS returned error: Invalid license data. Reinstall is required.
I've fixed the problem by reinstalling SSDT with MS VS 2012 (Integrated) http://msdn.microsoft.com/en-us/jj650015
Use the PackageResourceViewer plugin installed via Package Control (as mentioned by MattDMo). This allows you to override the compressed resources by simply opening it in Sublime Text and saving the file. It automatically saves only the edited resources to %APPDATA%/Roaming/Sublime Text 3/Packages/ or ~/.config/sublime-text-3/Packages/.
Specific to the op, once the plugin is installed, execute the PackageResourceViewer: Open Resource
command. Then select JavaScript
followed by JavaScript.tmLanguage
. This will open an xml file in the editor. You can edit any of the language definitions and save the file. This will write an override copy of the JavaScript.tmLanguage file in the user directory.
The same method can be used to edit the language definition of any language in the system.
It's good sample for you:
public class IpProperties
{
public string Status { get; set; }
public string Country { get; set; }
public string CountryCode { get; set; }
public string Region { get; set; }
public string RegionName { get; set; }
public string City { get; set; }
public string Zip { get; set; }
public string Lat { get; set; }
public string Lon { get; set; }
public string TimeZone { get; set; }
public string ISP { get; set; }
public string ORG { get; set; }
public string AS { get; set; }
public string Query { get; set; }
}
public string IPRequestHelper(string url)
{
HttpWebRequest objRequest = (HttpWebRequest)WebRequest.Create(url);
HttpWebResponse objResponse = (HttpWebResponse)objRequest.GetResponse();
StreamReader responseStream = new StreamReader(objResponse.GetResponseStream());
string responseRead = responseStream.ReadToEnd();
responseStream.Close();
responseStream.Dispose();
return responseRead;
}
public IpProperties GetCountryByIP(string ipAddress)
{
string ipResponse = IPRequestHelper("http://ip-api.com/xml/" + ipAddress);
using (TextReader sr = new StringReader(ipResponse))
{
using (System.Data.DataSet dataBase = new System.Data.DataSet())
{
IpProperties ipProperties = new IpProperties();
dataBase.ReadXml(sr);
ipProperties.Status = dataBase.Tables[0].Rows[0][0].ToString();
ipProperties.Country = dataBase.Tables[0].Rows[0][1].ToString();
ipProperties.CountryCode = dataBase.Tables[0].Rows[0][2].ToString();
ipProperties.Region = dataBase.Tables[0].Rows[0][3].ToString();
ipProperties.RegionName = dataBase.Tables[0].Rows[0][4].ToString();
ipProperties.City = dataBase.Tables[0].Rows[0][5].ToString();
ipProperties.Zip = dataBase.Tables[0].Rows[0][6].ToString();
ipProperties.Lat = dataBase.Tables[0].Rows[0][7].ToString();
ipProperties.Lon = dataBase.Tables[0].Rows[0][8].ToString();
ipProperties.TimeZone = dataBase.Tables[0].Rows[0][9].ToString();
ipProperties.ISP = dataBase.Tables[0].Rows[0][10].ToString();
ipProperties.ORG = dataBase.Tables[0].Rows[0][11].ToString();
ipProperties.AS = dataBase.Tables[0].Rows[0][12].ToString();
ipProperties.Query = dataBase.Tables[0].Rows[0][13].ToString();
return ipProperties;
}
}
}
And test:
var ipResponse = GetCountryByIP("your ip address or domain name :)");
Here is my take: these functions convert a UTF8 string to a proper HEX without the extra zeroes padding. A real UTF8 string has characters with 1, 2, 3 and 4 bytes length.
While working on this I found a couple key things that solved my problems:
str.split('')
doesn't handle multi-byte characters like emojis correctly. The proper/modern way to handle this is with Array.from(str)
encodeURIComponent()
and decodeURIComponent()
are great tools to convert between string and hex. They are pretty standard, they handle UTF8 correctly.c.charCodeAt(0).toString(16)
works perfectly for those function utf8ToHex(str) {
return Array.from(str).map(c =>
c.charCodeAt(0) < 128 ? c.charCodeAt(0).toString(16) :
encodeURIComponent(c).replace(/\%/g,'').toLowerCase()
).join('');
},
function hexToUtf8: function(hex) {
return decodeURIComponent('%' + hex.match(/.{1,2}/g).join('%'));
}
updated() should be what you're looking for:
Called after a data change causes the virtual DOM to be re-rendered and patched.
The component’s DOM will have been updated when this hook is called, so you can perform DOM-dependent operations here.
I found how to turn the drop down on as shown in the first answer (@ChrisF):
Go to Options->Text Editor->(your language)
and tick "Navigation bar" in the display section.
aws s3 ls s3://bucket-name/folder-prefix-if-any --recursive | wc -l
app.config
app.name=Properties Sample Code
app.version=1.09
Source code:
Properties prop = new Properties();
String fileName = "app.config";
InputStream is = null;
try {
is = new FileInputStream(fileName);
} catch (FileNotFoundException ex) {
...
}
try {
prop.load(is);
} catch (IOException ex) {
...
}
System.out.println(prop.getProperty("app.name"));
System.out.println(prop.getProperty("app.version"));
Output:
Properties Sample Code
1.09
If you deleted a branch via Source Tree
, you could easily find the SHA1 of the deleted branch by going to View -> Show Command History
.
It should have the next format:
Deleting branch ...
...
Deleted branch %NAME% (was %SHA1%)
...
Then just follow the original answer.
git branch branchName <sha1>
I think this works better in PHP 5.5+
$IdVar = array_column($data, 'id');
Here is an example that lists all the files on my desktop. you should change the path variable to your path.
Instead of printing the file's name with System.out.println, you should place your own code to operate on the file.
public static void main(String[] args) {
File path = new File("c:/documents and settings/Zachary/desktop");
File [] files = path.listFiles();
for (int i = 0; i < files.length; i++){
if (files[i].isFile()){ //this line weeds out other directories/folders
System.out.println(files[i]);
}
}
}
I often use this pattern and recommend you to use it as well:
class MyMap : public std::map<int, int>
{
public:
MyMap()
{
//either
insert(make_pair(1, 2));
insert(make_pair(3, 4));
insert(make_pair(5, 6));
//or
(*this)[1] = 2;
(*this)[3] = 4;
(*this)[5] = 6;
}
} const static my_map;
Sure it is not very readable, but without other libs it is best we can do. Also there won't be any redundant operations like copying from one map to another like in your attempt.
This is even more useful inside of functions: Instead of:
void foo()
{
static bool initComplete = false;
static Map map;
if (!initComplete)
{
initComplete = true;
map= ...;
}
}
Use the following:
void bar()
{
struct MyMap : Map
{
MyMap()
{
...
}
} static mymap;
}
Not only you don't need here to deal with boolean variable anymore, you won't have hidden global variable that is checked if initializer of static variable inside function was already called.
The original code you suggest is the best way.
Matlab is extremely good at vectorized operations such as this, at least for large vectors.
The built-in norm function is very fast. Here are some timing results:
V = rand(10000000,1);
% Run once
tic; V1=V/norm(V); toc % result: 0.228273s
tic; V2=V/sqrt(sum(V.*V)); toc % result: 0.325161s
tic; V1=V/norm(V); toc % result: 0.218892s
V1 is calculated a second time here just to make sure there are no important cache penalties on the first call.
Timing information here was produced with R2008a x64 on Windows.
EDIT:
Revised answer based on gnovice's suggestions (see comments). Matrix math (barely) wins:
clc; clear all;
V = rand(1024*1024*32,1);
N = 10;
tic; for i=1:N, V1 = V/norm(V); end; toc % 6.3 s
tic; for i=1:N, V2 = V/sqrt(sum(V.*V)); end; toc % 9.3 s
tic; for i=1:N, V3 = V/sqrt(V'*V); end; toc % 6.2 s ***
tic; for i=1:N, V4 = V/sqrt(sum(V.^2)); end; toc % 9.2 s
tic; for i=1:N, V1=V/norm(V); end; toc % 6.4 s
IMHO, the difference between "norm(V)" and "sqrt(V'*V)" is small enough that for most programs, it's best to go with the one that's more clear. To me, "norm(V)" is clearer and easier to read, but "sqrt(V'*V)" is still idiomatic in Matlab.
Use finish
like this:
Intent i = new Intent(Main_Menu.this, NextActivity.class);
finish(); //Kill the activity from which you will go to next activity
startActivity(i);
FLAG_ACTIVITY_NO_HISTORY
you can use in case for the activity you want to finish. For exampe you are going from A-->B--C. You want to finish activity B when you go from B-->C so when you go from A-->B you can use this flag. When you go to some other activity this activity will be automatically finished.
To learn more on using Intent.FLAG_ACTIVITY_NO_HISTORY
read: http://developer.android.com/reference/android/content/Intent.html#FLAG_ACTIVITY_NO_HISTORY
This worked for me:
#include <iostream>
#include <pthread.h>
using namespace std;
void* print_message(void*) {
cout << "Threading\n";
}
int main() {
pthread_t t1;
pthread_create(&t1, NULL, &print_message, NULL);
cout << "Hello";
// Optional.
void* result;
pthread_join(t1,&result);
// :~
return 0;
}
Wget currently only supports x-www-form-urlencoded data. --post-file
is not for transmitting files as form attachments, it expects data with the form: key=value&otherkey=example
.
--post-data
and --post-file
work the same way: the only difference is that --post-data
allows you to specify the data in the command line, while --post-file
allows you to specify the path of the file that contain the data to send.
Here's the documentation:
--post-data=string
--post-file=file
Use POST as the method for all HTTP requests and send the specified data
in the request body. --post-data sends string as data, whereas
--post-file sends the contents of file. Other than that, they work in
exactly the same way. In particular, they both expect content of the
form "key1=value1&key2=value2", with percent-encoding for special
characters; the only difference is that one expects its content as a
command-line parameter and the other accepts its content from a file. In
particular, --post-file is not for transmitting files as form
attachments: those must appear as "key=value" data (with appropriate
percent-coding) just like everything else. Wget does not currently
support "multipart/form-data" for transmitting POST data; only
"application/x-www-form-urlencoded". Only one of --post-data and
--post-file should be specified.
Regarding your authentication token, it should either be provided in the header, in the path of the url, or in the data itself. This must be indicated somewhere in the documentation of the service you use. In a POST request, as in a GET request, you must specify the data using keys and values. This way the server will be able to receive multiple information with specific names. It's similar with variables.
Hence, you can't just send a magic token to the server, you also need to specify the name of the key. If the key is "token", then it should be token=YOUR_TOKEN
.
wget --post-data 'user=foo&password=bar' http://example.com/auth.php
Also, you should consider using curl if you can because it is easier to send files using it. There are many examples on the Internet for that.
You can copy-paste data from en excel-sheet to an SQL-table by doing so:
Note: Often tables have a first column which is an ID-column with an auto generated/incremented ID. When you paste your data it will start inserting the leftmost selected column in Excel into the leftmost column in SSMS thus inserting data into the ID-column. To avoid that keep an empty column at the leftmost part of your selection in order to skip that column in SSMS. That will result in SSMS inserting the default data which is the auto generated ID.
Furthermore you can skip other columns by having empty columns at the same ordinal positions in the Excel sheet selection as those columns to be skipped. That will make SSMS insert the default value (or NULL where no default value is specified).
Alternatively you can also,
1) Navigate to that method by Ctrl+Click on the method. The new tab/window will opened with text "Source not found" and button "Attach Source.." in it
2) Click the button "Attach Source.."
3) New window pops up. Click the button "External Folder"
4) Locate the JavaFX javadoc folder. If you are on Windows with default installation settings, then the folder path is C:\Program Files\Oracle\JavaFX 2.0 SDK\docs
That's not possible. localhost
always defaults to the loopback device on the local operating system.
As your virtual machine runs its own operating system it has its own loopback device which you cannot access from the outside.
If you want to access it e.g. in a browser, connect to it using the local IP instead:
http://192.168.180.1:8000
This is just an example of course, you can find out the actual IP by issuing an ifconfig
command on a shell in the guest operating system.
After having a bit of a play myself, you should use:
console.log(req.originalUrl)
my "keep it simple stupid" way ...it waste some resources , i know , but i dont care as my code keep simple so... First, add a footer with visibility GONE to your item_layout
<LinearLayout
android:id="@+id/footer"
android:layout_width="match_parent"
android:layout_height="80dp"
android:orientation="vertical"
android:visibility="gone">
</LinearLayout>
Then, set it visible on the last item
public void onBindViewHolder(ChannelAdapter.MyViewHolder holder, int position) {
boolean last = position==data.size()-1;
//....
holder.footer.setVisibility(View.GONE);
if (last && showFooter){
holder.footer.setVisibility(View.VISIBLE);
}
}
do the opposite for header
Assuming you're currently on the branch you want to rename:
git branch -m newname
This is documented in the manual for git-branch
, which you can view using
man git-branch
or
git help branch
Specifically, the command is
git branch (-m | -M) [<oldbranch>] <newbranch>
where the parameters are:
<oldbranch>
The name of an existing branch to rename.
<newbranch>
The new name for an existing branch. The same restrictions as for <branchname> apply.
<oldbranch>
is optional, if you want to rename the current branch.
instanceof
is used to check if an object is an instance of a class, an instance of a subclass, or an instance of a class that implements a particular interface.
I agree with @maverik above, I prefer not to hide the details with a typedef. Especially when you are trying to understand what is going on. I also prefer to see everything instead of a partial code snippet. With that said, here is a malloc and free of a complex structure.
The code uses the ms visual studio leak detector so you can experiment with the potential leaks.
#include "stdafx.h"
#include <string.h>
#include "msc-lzw.h"
#define _CRTDBG_MAP_ALLOC
#include <stdlib.h>
#include <crtdbg.h>
// 32-bit version
int hash_fun(unsigned int key, int try_num, int max) {
return (key + try_num) % max; // the hash fun returns a number bounded by the number of slots.
}
// this hash table has
// key is int
// value is char buffer
struct key_value_pair {
int key; // use this field as the key
char *pValue; // use this field to store a variable length string
};
struct hash_table {
int max;
int number_of_elements;
struct key_value_pair **elements; // This is an array of pointers to mystruct objects
};
int hash_insert(struct key_value_pair *data, struct hash_table *hash_table) {
int try_num, hash;
int max_number_of_retries = hash_table->max;
if (hash_table->number_of_elements >= hash_table->max) {
return 0; // FULL
}
for (try_num = 0; try_num < max_number_of_retries; try_num++) {
hash = hash_fun(data->key, try_num, hash_table->max);
if (NULL == hash_table->elements[hash]) { // an unallocated slot
hash_table->elements[hash] = data;
hash_table->number_of_elements++;
return RC_OK;
}
}
return RC_ERROR;
}
// returns the corresponding key value pair struct
// If a value is not found, it returns null
//
// 32-bit version
struct key_value_pair *hash_retrieve(unsigned int key, struct hash_table *hash_table) {
unsigned int try_num, hash;
unsigned int max_number_of_retries = hash_table->max;
for (try_num = 0; try_num < max_number_of_retries; try_num++) {
hash = hash_fun(key, try_num, hash_table->max);
if (hash_table->elements[hash] == 0) {
return NULL; // Nothing found
}
if (hash_table->elements[hash]->key == key) {
return hash_table->elements[hash];
}
}
return NULL;
}
// Returns the number of keys in the dictionary
// The list of keys in the dictionary is returned as a parameter. It will need to be freed afterwards
int keys(struct hash_table *pHashTable, int **ppKeys) {
int num_keys = 0;
*ppKeys = (int *) malloc( pHashTable->number_of_elements * sizeof(int) );
for (int i = 0; i < pHashTable->max; i++) {
if (NULL != pHashTable->elements[i]) {
(*ppKeys)[num_keys] = pHashTable->elements[i]->key;
num_keys++;
}
}
return num_keys;
}
// The dictionary will need to be freed afterwards
int allocate_the_dictionary(struct hash_table *pHashTable) {
// Allocate the hash table slots
pHashTable->elements = (struct key_value_pair **) malloc(pHashTable->max * sizeof(struct key_value_pair)); // allocate max number of key_value_pair entries
for (int i = 0; i < pHashTable->max; i++) {
pHashTable->elements[i] = NULL;
}
// alloc all the slots
//struct key_value_pair *pa_slot;
//for (int i = 0; i < pHashTable->max; i++) {
// // all that he could see was babylon
// pa_slot = (struct key_value_pair *) malloc(sizeof(struct key_value_pair));
// if (NULL == pa_slot) {
// printf("alloc of slot failed\n");
// while (1);
// }
// pHashTable->elements[i] = pa_slot;
// pHashTable->elements[i]->key = 0;
//}
return RC_OK;
}
// This will make a dictionary entry where
// o key is an int
// o value is a character buffer
//
// The buffer in the key_value_pair will need to be freed afterwards
int make_dict_entry(int a_key, char * buffer, struct key_value_pair *pMyStruct) {
// determine the len of the buffer assuming it is a string
int len = strlen(buffer);
// alloc the buffer to hold the string
pMyStruct->pValue = (char *) malloc(len + 1); // add one for the null terminator byte
if (NULL == pMyStruct->pValue) {
printf("Failed to allocate the buffer for the dictionary string value.");
return RC_ERROR;
}
strcpy(pMyStruct->pValue, buffer);
pMyStruct->key = a_key;
return RC_OK;
}
// Assumes the hash table has already been allocated.
int add_key_val_pair_to_dict(struct hash_table *pHashTable, int key, char *pBuff) {
int rc;
struct key_value_pair *pKeyValuePair;
if (NULL == pHashTable) {
printf("Hash table is null.\n");
return RC_ERROR;
}
// Allocate the dictionary key value pair struct
pKeyValuePair = (struct key_value_pair *) malloc(sizeof(struct key_value_pair));
if (NULL == pKeyValuePair) {
printf("Failed to allocate key value pair struct.\n");
return RC_ERROR;
}
rc = make_dict_entry(key, pBuff, pKeyValuePair); // a_hash_table[1221] = "abba"
if (RC_ERROR == rc) {
printf("Failed to add buff to key value pair struct.\n");
return RC_ERROR;
}
rc = hash_insert(pKeyValuePair, pHashTable);
if (RC_ERROR == rc) {
printf("insert has failed!\n");
return RC_ERROR;
}
return RC_OK;
}
void dump_hash_table(struct hash_table *pHashTable) {
// Iterate the dictionary by keys
char * pValue;
struct key_value_pair *pMyStruct;
int *pKeyList;
int num_keys;
printf("i\tKey\tValue\n");
printf("-----------------------------\n");
num_keys = keys(pHashTable, &pKeyList);
for (int i = 0; i < num_keys; i++) {
pMyStruct = hash_retrieve(pKeyList[i], pHashTable);
pValue = pMyStruct->pValue;
printf("%d\t%d\t%s\n", i, pKeyList[i], pValue);
}
// Free the key list
free(pKeyList);
}
int main(int argc, char *argv[]) {
int rc;
int i;
struct hash_table a_hash_table;
a_hash_table.max = 20; // The dictionary can hold at most 20 entries.
a_hash_table.number_of_elements = 0; // The intial dictionary has 0 entries.
allocate_the_dictionary(&a_hash_table);
rc = add_key_val_pair_to_dict(&a_hash_table, 1221, "abba");
if (RC_ERROR == rc) {
printf("insert has failed!\n");
return RC_ERROR;
}
rc = add_key_val_pair_to_dict(&a_hash_table, 2211, "bbaa");
if (RC_ERROR == rc) {
printf("insert has failed!\n");
return RC_ERROR;
}
rc = add_key_val_pair_to_dict(&a_hash_table, 1122, "aabb");
if (RC_ERROR == rc) {
printf("insert has failed!\n");
return RC_ERROR;
}
rc = add_key_val_pair_to_dict(&a_hash_table, 2112, "baab");
if (RC_ERROR == rc) {
printf("insert has failed!\n");
return RC_ERROR;
}
rc = add_key_val_pair_to_dict(&a_hash_table, 1212, "abab");
if (RC_ERROR == rc) {
printf("insert has failed!\n");
return RC_ERROR;
}
rc = add_key_val_pair_to_dict(&a_hash_table, 2121, "baba");
if (RC_ERROR == rc) {
printf("insert has failed!\n");
return RC_ERROR;
}
// Iterate the dictionary by keys
dump_hash_table(&a_hash_table);
// Free the individual slots
for (i = 0; i < a_hash_table.max; i++) {
// all that he could see was babylon
if (NULL != a_hash_table.elements[i]) {
free(a_hash_table.elements[i]->pValue); // free the buffer in the struct
free(a_hash_table.elements[i]); // free the key_value_pair entry
a_hash_table.elements[i] = NULL;
}
}
// Free the overall dictionary
free(a_hash_table.elements);
_CrtDumpMemoryLeaks();
return 0;
}
In the first one Python has to execute one more operations than necessary(instead of just checking not equal to it has to check if it is not true that it is equal, thus one more operation). It would be impossible to tell the difference from one execution, but if run many times, the second would be more efficient. Overall I would use the second one, but mathematically they are the same
Use onkeyup on the text box and check the keycode of the key pressed, if its between 65 and 90, allow else empty the text box.
You can do all these things but the underlying problem will be incompatibility with Windows updates of library files. Eventually you will have problems again. .ocx and .dll files will be clobbered and replaced: your database will not be able to cope with the new versions and it will not build or it will malfunction unexpectedly.
Even if it is really discouraged to use merge cells in Excel (use Center Across Selection
for instance if needed), the cell that "contains" the value is the one on the top left (at least, that's a way to express it).
Hence, you can get the value of merged cells in range B4:B11
in several ways:
Range("B4").Value
Range("B4:B11").Cells(1).Value
Range("B4:B11").Cells(1,1).Value
You can also note that all the other cells have no value in them. While debugging, you can see that the value is empty
.
Also note that Range("B4:B11").Value
won't work (raises an execution error number 13 if you try to Debug.Print
it) because it returns an array.
handleValueChange = (value) => {
let myArr= [...this.state.myArr]
myArr.push(value)
this.setState({
myArr
})
This might do the work.
I was facing the same problem, and I found the solution. There are issues in allocation of MaxPermSize. If you try to allocate more than your machine's free space then it gives this error in my issue. So try to reduce MaxPermSize.
I think it will help you to sort out your issue.
Have you tried the GNU make documentation? It has a whole section about conditionals with examples.
I'm using Styled Components and created a helper function for myself.
It takes the given Android elevation and creates a fairly equivalent iOS shadow.
import { css } from 'styled-components/native';
/*
REMINDER!!!!!!!!!!!!!
Shadows do not show up on iOS if `overflow: hidden` is used.
https://react-native.canny.io/feature-requests/p/shadow-does-not-appear-if-overflow-hidden-is-set-on-ios
*/
// eslint-disable-next-line import/prefer-default-export
export const crossPlatformElevation = (elevation: number = 0) => css`
/* Android - native default is 4, we're setting to 0 to match iOS. */
elevation: ${elevation};
/* iOS - default is no shadow. Only add if above zero */
${elevation > 0
&& css`
shadow-color: black;
shadow-offset: 0px ${0.5 * elevation}px;
shadow-opacity: 0.3;
shadow-radius: ${0.8 * elevation}px;
`}
`;
import styled from 'styled-components/native';
import { crossPlatformElevation } from "../../lib/stylingTools";
export const ContentContainer = styled.View`
background: white;
${crossPlatformElevation(10)};
`;
As of IE6 I believe you cannot customize the scroll bar using those properties. The Chris Coyier article linked to above goes into nice detail about the options for webkit proprietary css for customizing the scroll bar.
If you really want a cross browser solution that you can fully customize you're going to have to use some JS. Here is a link to a nice plugin for it called FaceScroll: http://www.dynamicdrive.com/dynamicindex11/facescroll/index.htm
If you don't have access to the classes to change the properties, or don't want to always use the same rename property, renaming can also be done by creating a custom resolver.
For example, if you have a class called MyCustomObject
, that has a property called LongPropertyName
, you can use a custom resolver like this…
public class CustomDataContractResolver : DefaultContractResolver
{
public static readonly CustomDataContractResolver Instance = new CustomDataContractResolver ();
protected override JsonProperty CreateProperty(MemberInfo member, MemberSerialization memberSerialization)
{
var property = base.CreateProperty(member, memberSerialization);
if (property.DeclaringType == typeof(MyCustomObject))
{
if (property.PropertyName.Equals("LongPropertyName", StringComparison.OrdinalIgnoreCase))
{
property.PropertyName = "Short";
}
}
return property;
}
}
Then call for serialization and supply the resolver:
var result = JsonConvert.SerializeObject(myCustomObjectInstance,
new JsonSerializerSettings { ContractResolver = CustomDataContractResolver.Instance });
And the result will be shortened to {"Short":"prop value"} instead of {"LongPropertyName":"prop value"}
More info on custom resolvers here
Not in bash (that I know of), but:
cp `ls | grep -v Music` /target_directory
I know this is not exactly what you were looking for, but it will solve your example.
By experiment I was able to observe this:
When SQL Profiler 2005 or SQL Profiler 2000 is used with database residing in SQLServer 2000 - problem mentioned problem persists, but when SQL Profiler 2005 is used with SQLServer 2005 database, it works perfect!
In Summary, the issue seems to be prevalent in SQLServer 2000 & rectified in SQLServer 2005.
The solution for the issue when dealing with SQLServer 2000 is (as explained by wearejimbo)
Identify the DatabaseID of the database you want to filter by querying the sysdatabases table as below
SELECT *
FROM master..sysdatabases
WHERE name like '%your_db_name%' -- Remove this line to see all databases
ORDER BY dbid
Use the DatabaseID Filter (instead of DatabaseName) in the New Trace window of SQL Profiler 2000
You can either use a double backslash each time
string foo = "D:\\Projects\\Some\\Kind\\Of\\Pathproblem\\wuhoo.xml";
or use the @ symbol
string foo = @"D:\Projects\Some\Kind\Of\Pathproblem\wuhoo.xml";
In the shell write
gnuplot -persist -e "plot filename1.dat,filename2.dat"
and consecutively the files you want. -persist is used to make the gnuplot screen stay as long as the user doesn't exit it manually.
The best way to put is that hg forget
is identical to hg remove
except that it leaves the files behind in your working copy. The files are left behind as untracked files and can now optionally be ignored with a pattern in .hgignore
.
In other words, I cannot tell if you used hg forget
or hg remove
when I pull from you. A file that you ran hg forget
on will be deleted when I update to that changeset — just as if you had used hg remove
instead.
I was having the same problem, i am on the nodejs version: 8.9.4
and npm version: 5.6.0
.
I tried a lot solutions online, including the ones on this post, none worked for me, then i found about yarn package manager which solved the problem for me, so if all fails, i think "yarn" is worth checking out.
EDIT:
It seems npm has problems when it is outdated, updating it has helped me as well.
They need to be percent-encoded:
> encodeURIComponent('&')
"%26"
So in your case, the URL would look like:
http://www.mysite.com?candy_name=M%26M
Depends on your RDBMS
MS SQL Server
SELECT TOP 10 ...
MySQL
SELECT ... LIMIT 10
Sybase
SET ROWCOUNT 10
SELECT ...
Etc.
Try this Function :
public int indexOfArray(String input){
for(int i=0;i<TYPES,length();i++)
{
if(TYPES[i].equals(input))
{
return i ;
}
}
return -1 // if the text not found the function return -1
}
bcm's answer, which has 0 votes at this time, is actually a great, under-appreciated answer. It uses good old Pythagoras to detect when objects are closer than their combined bounding circles. Simple collision detection often uses rectangular collision detection, which is fine if your sprites tend to be, well, rectangular. If they are circular (or otherwise less than rectangular), such as a ball, an asteroid, or any other shape where the extreme corners are usually transparent, you may find this efficient routine to be the most accurate.
But for clarity, here is a more fully realized version of the code:
function doCollide(x1, y1, w1, x2, y2, w2) {
var xd = x1 - x2;
var yd = y1 - y2;
var wt = w2 + w1;
return (xd * xd + yd * yd <= wt * wt);
}
Where the parameters to pass in are the x,y and width values of two different sprite objects.
You could use this function which is doing the same as the eval()
function, but in a simple manner, using a function.
def numeric(equation):
if '+' in equation:
y = equation.split('+')
x = int(y[0])+int(y[1])
elif '-' in equation:
y = equation.split('-')
x = int(y[0])-int(y[1])
return x
I'd realise its a very old question, but since i wondered today for a more efficient method of handling the bootstrap modals. I did some research and found something better then the solutions which are shown above, that can be found at this link:
http://www.petefreitag.com/item/809.cfm
First load the jquery
$(document).ready(function() {
$('a[data-confirm]').click(function(ev) {
var href = $(this).attr('href');
if (!$('#dataConfirmModal').length) {
$('body').append('<div id="dataConfirmModal" class="modal" role="dialog" aria-labelledby="dataConfirmLabel" aria-hidden="true"><div class="modal-header"><button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button><h3 id="dataConfirmLabel">Please Confirm</h3></div><div class="modal-body"></div><div class="modal-footer"><button class="btn" data-dismiss="modal" aria-hidden="true">Cancel</button><a class="btn btn-primary" id="dataConfirmOK">OK</a></div></div>');
}
$('#dataConfirmModal').find('.modal-body').text($(this).attr('data-confirm'));
$('#dataConfirmOK').attr('href', href);
$('#dataConfirmModal').modal({show:true});
return false;
});
});
Then just ask any question/confirmation to href:
<a href="/any/url/delete.php?ref=ID" data-confirm="Are you sure you want to delete?">Delete</a>
This way the confirmation modal is a lot more universal and so it can easily be re-used on other parts of your website.
try this:
var span = document.getElementById("span");
span.style.fontSize = "25px";
span.innerHTML = "String";
JaredPar's code works but only for one level of inheritance. For unlimited levels of inheritance, use the following code
public bool IsTypeDerivedFromGenericType(Type typeToCheck, Type genericType)
{
if (typeToCheck == typeof(object))
{
return false;
}
else if (typeToCheck == null)
{
return false;
}
else if (typeToCheck.IsGenericType && typeToCheck.GetGenericTypeDefinition() == genericType)
{
return true;
}
else
{
return IsTypeDerivedFromGenericType(typeToCheck.BaseType, genericType);
}
}
If you want the result as the nearest binary floating point number use float
:
result = [float(x.strip(' "')) for x in A1]
If you want the result stored exactly use Decimal
instead of float
:
from decimal import Decimal
result = [Decimal(x.strip(' "')) for x in A1]
I also use Stefan Petre’s http://www.eyecon.ro/bootstrap-datepicker and it does not work with Bootstrap 3 without modification. Note that http://eternicode.github.io/bootstrap-datepicker/ is a fork of Stefan Petre's code.
You have to change your markup (the sample markup will not work) to use the new CSS and form grid layout in Bootstrap 3. Also, you have to modify some CSS and JavaScript in the actual bootstrap-datepicker implementation.
Here is my solution:
<div class="form-group row">
<div class="col-xs-8">
<label class="control-label">My Label</label>
<div class="input-group date" id="dp3" data-date="12-02-2012" data-date-format="mm-dd-yyyy">
<input class="form-control" type="text" readonly="" value="12-02-2012">
<span class="input-group-addon"><i class="glyphicon glyphicon-calendar"></i></span>
</div>
</div>
</div>
CSS changes in datepicker.css on lines 176-177:
.input-group.date .input-group-addon i,
.input-group.date .input-group-addon i {
Javascript change in datepicker-bootstrap.js on line 34:
this.component = this.element.is('.date') ? this.element.find('.input-group-addon') : false;
UPDATE
Using the newer code from http://eternicode.github.io/bootstrap-datepicker/ the changes are as follows:
CSS changes in datepicker.css on lines 446-447:
.input-group.date .input-group-addon i,
.input-group.date .input-group-addon i {
Javascript change in datepicker-bootstrap.js on line 46:
this.component = this.element.is('.date') ? this.element.find('.input-group-addon, .btn') : false;
Finally, the JavaScript to enable the datepicker (with some options):
$(".input-group.date").datepicker({ autoclose: true, todayHighlight: true });
Tested with Bootstrap 3.0 and JQuery 1.9.1. Note that this fork is better to use than the other as it is more feature rich, has localization support and auto-positions the datepicker based on the control position and window size, avoiding the picker going off the screen which was a problem with the older version.
STATICFILES_DIRS
: You can keep the static files for your project here e.g. the ones used by your templates.
STATIC_ROOT
: leave this empty, when you do manage.py collectstatic
, it will search for all the static files on your system and move them here. Your static file server is supposed to be mapped to this folder wherever it is located. Check it after running collectstatic and you'll find the directory structure django has built.
--------Edit----------------
As pointed out by @DarkCygnus, STATIC_ROOT should point at a directory on your filesystem, the folder should be empty since it will be populated by Django.
STATIC_ROOT = os.path.join(BASE_DIR, 'staticfiles')
or
STATIC_ROOT = '/opt/web/project/static_files'
--------End Edit -----------------
STATIC_URL
: '/static/' is usually fine, it's just a prefix for static files.
An Internet Information Services (IIS) worker process is a windows process (w3wp.exe) which runs Web applications, and is responsible for handling requests sent to a Web Server for a specific application pool.
It is the worker process for IIS. Each application pool creates at least one instance of w3wp.exe
and that is what actually processes requests in your application. It is not dangerous to attach to this, that is just a standard windows message.
Unless your app is using some special encryption you can simply add Boolean a key to your Info.plist
with name ITSAppUsesNonExemptEncryption
and value NO
.
If your app is using custom encryption then you will need to provide extra legal documents and go through a review of your encryption before being able to select builds.
If you continue with selecting that version for testing, it will ask for the compliance information manually. Choosing "No" presents you with the plist recommendation above.
This is change has been announced in the 2015 WWDC, but I guess it has been enforced only very recently. See this and this for a transcript of the WWDC session related to the export compliance, just to a text search for "export".
There are other similar questions on SO, see:
Use \overleftarrow
to create a long arrow to the left.
\overleftarrow{blahblahblah}
You can simply use:
document.getElementById(button_id).innerText = 'Your text here';
If you want to use HTML formatting, use the innerHTML
property instead.
In Java 8, you can use lambda expression:
map.keySet().removeIf(key -> key condition);
You can password protect a SQLite3 DB. Before doing any operations, set the password as follows.
SQLiteConnection conn = new SQLiteConnection("Data Source=MyDatabase.sqlite;Version=3;");
conn.SetPassword("password");
conn.Open();
then next time you can access it like
conn = new SQLiteConnection("Data Source=MyDatabase.sqlite;Version=3;Password=password;");
conn.Open();
This wont allow any GUI editor to view your data. Some editors can decrypt the DB if you provide the password. The algorithm used is RSA.
Later if you wish to change the password, use
conn.ChangePassword("new_password");
To reset or remove password, use
conn.ChangePassword(String.Empty);
In our Oracle DB (PL/SQL) below code working to get the list of all exists tables in our DB.
select * from tab;
and
select table_name from tabs;
both are working. let's try and find yours.
What about this solution?
div.commentList > article.comment:not(:last-child):last-of-type
{
color:red; /*or whatever...*/
}
One can also use requests if we would like to access a web page using proxies. Python 3 code:
>>> import requests
>>> url = 'http://www.google.com'
>>> proxy = '169.50.87.252:80'
>>> requests.get(url, proxies={"http":proxy})
<Response [200]>
More than one proxies can also be added.
>>> proxy1 = '169.50.87.252:80'
>>> proxy2 = '89.34.97.132:8080'
>>> requests.get(url, proxies={"http":proxy1,"http":proxy2})
<Response [200]>
Much longer solution, but accounts for the following scenarios:
Is the image taller than the bounding box
private Image ResizePhoto(FileInfo sourceImage, int desiredWidth, int desiredHeight)
{
//throw error if bouning box is to small
if (desiredWidth < 4 || desiredHeight < 4)
throw new InvalidOperationException("Bounding Box of Resize Photo must be larger than 4X4 pixels.");
var original = Bitmap.FromFile(sourceImage.FullName);
//store image widths in variable for easier use
var oW = (decimal)original.Width;
var oH = (decimal)original.Height;
var dW = (decimal)desiredWidth;
var dH = (decimal)desiredHeight;
//check if image already fits
if (oW < dW && oH < dH)
return original; //image fits in bounding box, keep size (center with css) If we made it bigger it would stretch the image resulting in loss of quality.
//check for double squares
if (oW == oH && dW == dH)
{
//image and bounding box are square, no need to calculate aspects, just downsize it with the bounding box
Bitmap square = new Bitmap(original, (int)dW, (int)dH);
original.Dispose();
return square;
}
//check original image is square
if (oW == oH)
{
//image is square, bounding box isn't. Get smallest side of bounding box and resize to a square of that center the image vertically and horizontally with Css there will be space on one side.
int smallSide = (int)Math.Min(dW, dH);
Bitmap square = new Bitmap(original, smallSide, smallSide);
original.Dispose();
return square;
}
//not dealing with squares, figure out resizing within aspect ratios
if (oW > dW && oH > dH) //image is wider and taller than bounding box
{
var r = Math.Min(dW, dH) / Math.Min(oW, oH); //two dimensions so figure out which bounding box dimension is the smallest and which original image dimension is the smallest, already know original image is larger than bounding box
var nH = oH * r; //will downscale the original image by an aspect ratio to fit in the bounding box at the maximum size within aspect ratio.
var nW = oW * r;
var resized = new Bitmap(original, (int)nW, (int)nH);
original.Dispose();
return resized;
}
else
{
if (oW > dW) //image is wider than bounding box
{
var r = dW / oW; //one dimension (width) so calculate the aspect ratio between the bounding box width and original image width
var nW = oW * r; //downscale image by r to fit in the bounding box...
var nH = oH * r;
var resized = new Bitmap(original, (int)nW, (int)nH);
original.Dispose();
return resized;
}
else
{
//original image is taller than bounding box
var r = dH / oH;
var nH = oH * r;
var nW = oW * r;
var resized = new Bitmap(original, (int)nW, (int)nH);
original.Dispose();
return resized;
}
}
}
This is by far the fastest and simplest solution, especially on big files:
head -n -1 foo.txt > temp.txt ; mv temp.txt foo.txt
if You want to delete the top line use this:
tail -n +2 foo.txt
which means output lines starting at line 2.
Do not use sed
for deleting lines from the top or bottom of a file -- it's very very slow if the file is large.
There is several options.
Either convert it to timestamp and use as instructed in other posts with strtotime()
or use MySQL’s date parsing option
I think you want to set the response of the call to the URL 'compz.php?prodid=' + x + '&qbuys=' + y
as value of the textbox right? If so, you have to do something like:
$.get('compz.php?prodid=' + x + '&qbuys=' + y, function(data) {
$('#subtotal').val(data);
});
Reference: get()
You have two errors in your code:
load()
puts the HTML returned from the Ajax into the specified element:
Load data from the server and place the returned HTML into the matched element.
You cannot set the value of a textbox with that method.
$(selector).load()
returns the a jQuery object. By default an object is converted to [object Object]
when treated as string.
Further clarification:
Assuming your URL returns 5
.
If your HTML looks like:
<div id="foo"></div>
then the result of
$('#foo').load('/your/url');
will be
<div id="foo">5</div>
But in your code, you have an input element. Theoretically (it is not valid HTML and does not work as you noticed), an equivalent call would result in
<input id="foo">5</input>
But you actually need
<input id="foo" value="5" />
Therefore, you cannot use load()
. You have to use another method, get the response and set it as value yourself.
In case anyone else is stuck with this: it just means the write permissions are wrong in the repo that you’re pushing to. Go and chmod -R it so that the user you’re accessing the git server with has write access.
http://blog.shamess.info/2011/05/06/remote-rejected-na-unpacker-error/
It just works.
bad_words = ['doc:', 'strickland:','\n']
with open('linetest.txt') as oldfile, open('linetestnew.txt', 'w') as newfile:
for line in oldfile:
if not any(bad_word in line for bad_word in bad_words):
newfile.write(line)
The \n
is a Unicode escape sequence for a newline.
Dead horse perhaps, but a while back I was trying to do the same and came across a script to create a STP that tried to do what I was looking for, but it had a few quirks that needed some attention. In an attempt to track down where I found the script to post an update, I came across this thread and it seemed like a good spot to share it.
This STP (Which for the most part I take no credit for, and I can't find the site I found it on), takes a schema name, table name, and Y or N [to include or exclude headers] as input parameters and queries the supplied table, outputting each row in comma-separated, quoted, csv format.
I've made numerous fixes/changes to the original script, but the bones of it are from the OP, whoever that was.
Here is the script:
IF OBJECT_ID('get_csvFormat', 'P') IS NOT NULL
DROP PROCEDURE get_csvFormat
GO
CREATE PROCEDURE get_csvFormat(@schemaname VARCHAR(20), @tablename VARCHAR(30),@header char(1))
AS
BEGIN
IF ISNULL(@tablename, '') = ''
BEGIN
PRINT('NO TABLE NAME SUPPLIED, UNABLE TO CONTINUE')
RETURN
END
ELSE
BEGIN
DECLARE @cols VARCHAR(MAX), @sqlstrs VARCHAR(MAX), @heading VARCHAR(MAX), @schemaid int
--if no schemaname provided, default to dbo
IF ISNULL(@schemaname, '') = ''
SELECT @schemaname = 'dbo'
--if no header provided, default to Y
IF ISNULL(@header, '') = ''
SELECT @header = 'Y'
SELECT @schemaid = (SELECT schema_id FROM sys.schemas WHERE [name] = @schemaname)
SELECT
@cols = (
SELECT ' , CAST([', b.name + '] AS VARCHAR(50)) '
FROM sys.objects a
INNER JOIN sys.columns b ON a.object_id=b.object_id
WHERE a.name = @tablename AND a.schema_id = @schemaid
FOR XML PATH('')
),
@heading = (
SELECT ',"' + b.name + '"' FROM sys.objects a
INNER JOIN sys.columns b ON a.object_id=b.object_id
WHERE a.name= @tablename AND a.schema_id = @schemaid
FOR XML PATH('')
)
SET @tablename = @schemaname + '.' + @tablename
SET @heading = 'SELECT ''' + right(@heading,len(@heading)-1) + ''' AS CSV, 0 AS Sort' + CHAR(13)
SET @cols = '''"'',' + replace(right(@cols,len(@cols)-1),',', ',''","'',') + ',''"''' + CHAR(13)
IF @header = 'Y'
SET @sqlstrs = 'SELECT CSV FROM (' + CHAR(13) + @heading + ' UNION SELECT CONCAT(' + @cols + ') CSV, 1 AS Sort FROM ' + @tablename + CHAR(13) + ') X ORDER BY Sort, CSV ASC'
ELSE
SET @sqlstrs = 'SELECT CONCAT(' + @cols + ') CSV FROM ' + @tablename
IF @schemaid IS NOT NULL
EXEC(@sqlstrs)
ELSE
PRINT('SCHEMA DOES NOT EXIST')
END
END
GO
--------------------------------------
--EXEC get_csvFormat @schemaname='dbo', @tablename='TradeUnion', @header='Y'
I think .myi you can repair from inside mysql.
If you see these type of error messages from MySQL: Database failed to execute query (query) 1016: Can't open file: 'sometable.MYI'. (errno: 145) Error Msg: 1034: Incorrect key file for table: 'sometable'. Try to repair it thenb you probably have a crashed or corrupt table.
You can check and repair the table from a mysql prompt like this:
check table sometable;
+------------------+-------+----------+----------------------------+
| Table | Op | Msg_type | Msg_text |
+------------------+-------+----------+----------------------------+
| yourdb.sometable | check | warning | Table is marked as crashed |
| yourdb.sometable | check | status | OK |
+------------------+-------+----------+----------------------------+
repair table sometable;
+------------------+--------+----------+----------+
| Table | Op | Msg_type | Msg_text |
+------------------+--------+----------+----------+
| yourdb.sometable | repair | status | OK |
+------------------+--------+----------+----------+
and now your table should be fine:
check table sometable;
+------------------+-------+----------+----------+
| Table | Op | Msg_type | Msg_text |
+------------------+-------+----------+----------+
| yourdb.sometable | check | status | OK |
+------------------+-------+----------+----------+
Here's my contribution:
def rev(test):
test = list(test)
i = len(test)-1
result = []
print test
while i >= 0:
result.append(test.pop(i))
i -= 1
return "".join(result)
I tried it using the request module, and was able to print the body of that page out pretty easily. Unfortunately with the skills I have, I can't help other than that.
You could use the 'isActive' prop like so:
const { router } = this.context;
if (router.isActive('/login')) {
router.push('/');
}
isActive will return a true or false.
Tested with react-router 2.7
GROUP BY has a very specific meaning that is distinct (heh) from the DISTINCT function.
GROUP BY causes the query results to be grouped using the chosen expression, aggregate functions can then be applied, and these will act on each group, rather than the entire resultset.
Here's an example that might help:
Given a table that looks like this:
name
------
barry
dave
bill
dave
dave
barry
john
This query:
SELECT name, count(*) AS count FROM table GROUP BY name;
Will produce output like this:
name count
-------------
barry 2
dave 3
bill 1
john 1
Which is obviously very different from using DISTINCT. If you want to group your results, use GROUP BY, if you just want a unique list of a specific column, use DISTINCT. This will give your database a chance to optimise the query for your needs.
<form action="javascript:alert('Hello there, I am being submitted');">
<button type="submit">
Let's do it
</button>
</form>
<!-- Tested in Firefox, Chrome, Edge and Safari -->
So for a short answer: yes, this is an option, and a nice one. It says "when submitted, please don't go anywhere, just run this script" - quite to the point.
A minor improvement
To let the event handler know which form we're dealing with, it would seem an obvious way to pass on the sender object:
<form action="javascript:myFunction(this)"> <!-- should work, but it won't -->
But instead, it will give you undefined. You can't access it because javascript:
links live in a separate scope. Therefore I'd suggest the following format, it's only 13 characters more and works like a charm:
<form action="javascript:;" onsubmit="myFunction(this)"> <!-- now you have it! -->
... now you can access the sender form properly. (You can write a simple "#" as action, it's quite common - but it has a side effect of scrolling to the top when submitting.)
Again, I like this approach because it's effortless and self-explaining. No "return false", no jQuery/domReady, no heavy weapons. It just does what it seems to do. Surely other methods work too, but for me, this is The Way Of The Samurai.
A note on validation
Forms only get submitted if their onsubmit
event handler returns something truthy, so you can easily run some preemptive checks:
<form action="/something.php" onsubmit="return isMyFormValid(this)">
Now isMyFormValid will run first, and if it returns false, server won't even be bothered. Needless to say, you will have to validate on server side too, and that's the more important one. But for quick and convenient early detection this is fine.
Here is it: http://www.htmlcssvqs.com/8ed/examples/chapter-17/webm-video-with-autoplay-loop.html You have to add the tags: autoplay="autoplay" loop="loop" or just "autoplay" and "loop".
The splice()
method returns the removed items in an array.
The slice()
method returns the selected element(s) in an array, as a new array object.
The splice()
method changes the original array and slice()
method doesn’t change the original array.
Splice()
method can take n number of arguments:
Argument 1: Index, Required.
Argument 2: Optional. The number of items to be removed. If set to 0(zero), no items will be removed. And if not passed, all item(s) from provided index will be removed.
Argument 3..n: Optional. The new item(s) to be added to the array.
slice()
method can take 2 arguments:
Argument 1: Required. An integer that specifies where to start the selection (The first element has an index of 0). Use negative numbers to select from the end of an array.
Argument 2: Optional. An integer that specifies where to end the selection. If omitted, all elements from the start position and to the end of the array will be selected. Use negative numbers to select from the end of an array.
Full sync has few tasks:
git reset HEAD --hard
git clean -f
git pull origin master
Or else, what I prefer is that, I may create a new branch with the latest from the remote using:
git checkout origin/master -b <new branch name>
origin is my remote repository reference, and master is my considered branch name. These may different from yours.
Technically, Kafka offers a huge superset of features when compared to the set of features offered by Rabbit MQ.
If the question is
Is Rabbit MQ technically better than Kafka?
then the answer is
No.
However, if the question is
Is Rabbit MQ better than Kafka from a business perspective?
then, the answer is
Probably 'Yes', in some business scenarios
Rabbit MQ can be better than Kafka, from a business perspective, for the following reasons:
Maintenance of legacy applications that depend on Rabbit MQ
Staff training cost and steep learning curve required for implementing Kafka
Infrastructure cost for Kafka is higher than that for Rabbit MQ.
Troubleshooting problems in Kafka implementation is difficult when compared to that in Rabbit MQ implementation.
A Rabbit MQ Developer can easily maintain and support applications that use Rabbit MQ.
The same is not true with Kafka. Experience with just Kafka development is not sufficient to maintain and support applications that use Kafka. The support personnel require other skills like zoo-keeper, networking, disk storage too.
The easiest way is
new = old[['A','C','D']]
.
How are you doing the compiling and linking? You'll need to specify both files, something like:
gcc testpoint.c point.c
...so that it knows to link the functions from both together. With the code as it's written right now, however, you'll then run into the opposite problem: multiple definitions of main
. You'll need/want to eliminate one (undoubtedly the one in point.c).
In a larger program, you typically compile and link separately to avoid re-compiling anything that hasn't changed. You normally specify what needs to be done via a makefile, and use make
to do the work. In this case you'd have something like this:
OBJS=testpoint.o point.o
testpoint.exe: $(OBJS)
gcc $(OJBS)
The first is just a macro for the names of the object files. You get it expanded with $(OBJS)
. The second is a rule to tell make 1) that the executable depends on the object files, and 2) telling it how to create the executable when/if it's out of date compared to an object file.
Most versions of make (including the one in MinGW I'm pretty sure) have a built-in "implicit rule" to tell them how to create an object file from a C source file. It normally looks roughly like this:
.c.o:
$(CC) -c $(CFLAGS) $<
This assumes the name of the C compiler is in a macro named CC (implicitly defined like CC=gcc
) and allows you to specify any flags you care about in a macro named CFLAGS
(e.g., CFLAGS=-O3
to turn on optimization) and $<
is a special macro that expands to the name of the source file.
You typically store this in a file named Makefile
, and to build your program, you just type make
at the command line. It implicitly looks for a file named Makefile
, and runs whatever rules it contains.
The good point of this is that make
automatically looks at the timestamps on the files, so it will only re-compile the files that have changed since the last time you compiled them (i.e., files where the ".c" file has a more recent time-stamp than the matching ".o" file).
Also note that 1) there are lots of variations in how to use make when it comes to large projects, and 2) there are also lots of alternatives to make. I've only hit on the bare minimum of high points here.
Give print
a file
keyword argument, where the value of the argument is a file stream. We can create a file stream using the open
function:
print("Hello stackoverflow!", file=open("output.txt", "a"))
print("I have a question.", file=open("output.txt", "a"))
From the Python documentation about print
:
The
file
argument must be an object with awrite(string)
method; if it is not present orNone
,sys.stdout
will be used.
And the documentation for open
:
Open
file
and return a corresponding file object. If the file cannot be opened, anOSError
is raised.
The "a"
as the second argument of open
means "append" - in other words, the existing contents of the file won't be overwritten. If you want the file to be overwritten instead, use "w"
.
Opening a file with open
many times isn't ideal for performance, however. You should ideally open it once and name it, then pass that variable to print
's file
option. You must remember to close the file afterwards!
f = open("output.txt", "a")
print("Hello stackoverflow!", file=f)
print("I have a question.", file=f)
f.close()
There's also a syntactic shortcut for this, which is the with
block. This will close your file at the end of the block for you:
with open("output.txt", "a") as f:
print("Hello stackoverflow!", file=f)
print("I have a question.", file=f)
The colon is a built-in command that does nothing, but returns 0 (success). Thus, it's shorter (and faster) than calling an actual command to do the same thing.
I made this simpler by making some improvements on the following classes (from other answers):
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace TestOO
{
class Program
{
static void Main(string[] args)
{
BaseClass _base = new BaseClass();
Console.WriteLine("Calling virtual method directly");
_base.SayHello();
Console.WriteLine("Calling single method directly");
_base.SayGoodbye();
DerivedClass _derived = new DerivedClass();
Console.WriteLine("Calling new method from derived class");
_derived.SayHello();
Console.WriteLine("Calling overrided method from derived class");
_derived.SayGoodbye();
DerivedClass2 _derived2 = new DerivedClass2();
Console.WriteLine("Calling new method from derived2 class");
_derived2.SayHello();
Console.WriteLine("Calling overrided method from derived2 class");
_derived2.SayGoodbye();
Console.ReadLine();
}
}
public class BaseClass
{
public void SayHello()
{
Console.WriteLine("Hello\n");
}
public virtual void SayGoodbye()
{
Console.WriteLine("Goodbye\n");
}
public void HelloGoodbye()
{
this.SayHello();
this.SayGoodbye();
}
}
public abstract class AbstractClass
{
public void SayHello()
{
Console.WriteLine("Hello\n");
}
//public virtual void SayGoodbye()
//{
// Console.WriteLine("Goodbye\n");
//}
public abstract void SayGoodbye();
}
public class DerivedClass : BaseClass
{
public new void SayHello()
{
Console.WriteLine("Hi There");
}
public override void SayGoodbye()
{
Console.WriteLine("See you later");
}
}
public class DerivedClass2 : AbstractClass
{
public new void SayHello()
{
Console.WriteLine("Hi There");
}
// We should use the override keyword with abstract types
//public new void SayGoodbye()
//{
// Console.WriteLine("See you later2");
//}
public override void SayGoodbye()
{
Console.WriteLine("See you later");
}
}
}
I added the height property to the body and html tags.
HTML:
<body>
<div id="wrapper">
<div id="header">header</div>
<div id="content">content</div>
</div>
CSS:
html, body
{
height: 100%;
min-height: 100%;
margin: 0;
padding: 0;
}
#wrapper
{
height: 100%;
min-height: 100%;
}
#header
{
height: 111px;
}
Worth knowing:
If you are running an ENTRYPOINT script ... the script will work with the shebang
#!/bin/bash -x
But will stop the container from stopping with
#!/bin/bash -xe
if exist yourfilename (
echo Yes
) else (
echo No
)
Replace yourfilename with the name of your file.
if exist yourfoldername\ (
echo Yes
) else (
echo No
)
Replace yourfoldername with the name of your folder.
A trailing backslash (\
) seems to be enough to distinguish between directories and ordinary files.
You can change it via an .htaccess
file.
.htaccess
files are stored in the same directory as your .php
files are. They modify configuration for that folder and all sub-folders. You simply use them by creating an .htaccess
file in the directory of your choice (or modify it if present).
The following should enable you to increase your upload limit (if the server provider allows PHP config changes via .htaccess
).
php_value upload_max_filesize 40M
php_value post_max_size 42M
By default, py.test
captures the result of standard out so that it can control how it prints it out. If it didn't do this, it would spew out a lot of text without the context of what test printed that text.
However, if a test fails, it will include a section in the resulting report that shows what was printed to standard out in that particular test.
For example,
def test_good():
for i in range(1000):
print(i)
def test_bad():
print('this should fail!')
assert False
Results in the following output:
>>> py.test tmp.py
============================= test session starts ==============================
platform darwin -- Python 2.7.6 -- py-1.4.20 -- pytest-2.5.2
plugins: cache, cov, pep8, xdist
collected 2 items
tmp.py .F
=================================== FAILURES ===================================
___________________________________ test_bad ___________________________________
def test_bad():
print('this should fail!')
> assert False
E assert False
tmp.py:7: AssertionError
------------------------------- Captured stdout --------------------------------
this should fail!
====================== 1 failed, 1 passed in 0.04 seconds ======================
Note the Captured stdout
section.
If you would like to see print
statements as they are executed, you can pass the -s
flag to py.test
. However, note that this can sometimes be difficult to parse.
>>> py.test tmp.py -s
============================= test session starts ==============================
platform darwin -- Python 2.7.6 -- py-1.4.20 -- pytest-2.5.2
plugins: cache, cov, pep8, xdist
collected 2 items
tmp.py 0
1
2
3
... and so on ...
997
998
999
.this should fail!
F
=================================== FAILURES ===================================
___________________________________ test_bad ___________________________________
def test_bad():
print('this should fail!')
> assert False
E assert False
tmp.py:7: AssertionError
====================== 1 failed, 1 passed in 0.02 seconds ======================
you must parse JSON string to become object
var dataObject = jQuery.parseJSON(data);
so you can call it like:
success: function (data) {
var dataObject = jQuery.parseJSON(data);
if (dataObject.success == 1) {
var insertedGoalId = dataObject.inserted.goal_id;
...
...
}
}
Here is an algorithm finding and printing all paths from s to t using modification of DFS. Also dynamic programming can be used to find the count of all possible paths. The pseudo code will look like this:
AllPaths(G(V,E),s,t)
C[1...n] //array of integers for storing path count from 's' to i
TopologicallySort(G(V,E)) //here suppose 's' is at i0 and 't' is at i1 index
for i<-0 to n
if i<i0
C[i]<-0 //there is no path from vertex ordered on the left from 's' after the topological sort
if i==i0
C[i]<-1
for j<-0 to Adj(i)
C[i]<- C[i]+C[j]
return C[i1]
If a global hotkey would suffice, then RegisterHotKey would do the trick
You can use this:
Collections.sort(list, org.joda.time.DateTimeComparator.getInstance());
Simple Steps to installed pod file:
Open terminal 2.Command on terminal: sudo gem install cocoapods
set your project path on terminal.
command : pod init
go to pod file of your project and adding pod which you want to install
added in pod file : pod 'AFNetworking', '~> 3.0
Command : Pod install
Close project of Xcode
open your Project from terminals
Command : open PodDemos.xcworkspace
if ( params.build_deploy == '1' ) {
println "build_deploy ? ${params.build_deploy}"
jobB = build job: 'k8s-core-user_deploy', propagate: false, wait: true, parameters: [
string(name:'environment', value: "${params.environment}"),
string(name:'branch_name', value: "${params.branch_name}"),
string(name:'service_name', value: "${params.service_name}"),
]
println jobB.getResult()
}
I personally use a little AutoHotkey script to remap certain keyboard functions, for the console window (CMD) I use:
; Redefine only when the active window is a console window
#IfWinActive ahk_class ConsoleWindowClass
; Close Command Window with Ctrl+w
$^w::
WinGetTitle sTitle
If (InStr(sTitle, "-")=0) {
Send EXIT{Enter}
} else {
Send ^w
}
return
; Ctrl+up / Down to scroll command window back and forward
^Up::
Send {WheelUp}
return
^Down::
Send {WheelDown}
return
; Paste in command window
^V::
; Spanish menu (Editar->Pegar, I suppose English version is the same, Edit->Paste)
Send !{Space}ep
return
#IfWinActive
You have not defined a method around your code.
import java.io.*;
public class details
{
public static void main( String[] args )
{
BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
System.out.println("What is your name?");
String name = in.readLine(); ;
System.out.println("Hello " + name);
}
}
In this case, I have assumed that you want your code to be executed in the main
method of the class. It is, of course, possible that this code goes in any other method.
I don't understand what the meaning of ordering with the same column ASC
and DESC
in the same ORDER BY
, but this how you can do it: naam DESC, naam ASC
like so:
ORDER BY `product_category_id` DESC,`naam` DESC, `naam` ASC
Setting
dialog.getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
will prevent dialog to cast a shadow.
Solution is to use
dialog.getWindow().setBackgroundDrawableResource(R.drawable.dialog_rounded_background);
where is R.drawable.dialog_rounded_background
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
<item>
<shape android:shape="rectangle" android:padding="10dp">
<solid
android:color="@color/dialog_bg_color"/>
<corners
android:radius="30dp" />
</shape>
</item>
</layer-list>
Since the return statement in getName
specifies multiple elements:
def getName(self):
return self.first_name, self.last_name
Python will return a container object that basically contains them.
In this case, returning a comma separated set of elements creates a tuple. Multiple values can only be returned inside containers.
Let's use a simpler function that returns multiple values:
def foo(a, b):
return a, b
You can look at the byte code generated by using dis.dis
, a disassembler for Python bytecode. For comma separated values w/o any brackets, it looks like this:
>>> import dis
>>> def foo(a, b):
... return a,b
>>> dis.dis(foo)
2 0 LOAD_FAST 0 (a)
3 LOAD_FAST 1 (b)
6 BUILD_TUPLE 2
9 RETURN_VALUE
As you can see the values are first loaded on the internal stack with LOAD_FAST
and then a BUILD_TUPLE
(grabbing the previous 2
elements placed on the stack) is generated. Python knows to create a tuple due to the commas being present.
You could alternatively specify another return type, for example a list, by using []
. For this case, a BUILD_LIST
is going to be issued following the same semantics as it's tuple equivalent:
>>> def foo_list(a, b):
... return [a, b]
>>> dis.dis(foo_list)
2 0 LOAD_FAST 0 (a)
3 LOAD_FAST 1 (b)
6 BUILD_LIST 2
9 RETURN_VALUE
The type of object returned really depends on the presence of brackets (for tuples ()
can be omitted if there's at least one comma). []
creates lists and {}
sets. Dictionaries need key:val
pairs.
To summarize, one actual object is returned. If that object is of a container type, it can contain multiple values giving the impression of multiple results returned. The usual method then is to unpack them directly:
>>> first_name, last_name = f.getName()
>>> print (first_name, last_name)
As an aside to all this, your Java ways are leaking into Python :-)
Don't use getters when writing classes in Python, use properties
. Properties are the idiomatic way to manage attributes, for more on these, see a nice answer here.
The selected answer is: ArrayList<Integer>(Arrays.asList(1,2,3,5,8,13,21));
However, its important to understand the selected answer internally copies the elements several times before creating the final array, and that there is a way to reduce some of that redundancy.
Lets start by understanding what is going on:
First, the elements are copied into the Arrays.ArrayList<T>
created by the static factory Arrays.asList(T...)
.
This does not the produce the same class as java.lang.ArrayList
despite having the same simple class name. It does not implement methods like remove(int)
despite having a List interface. If you call those methods it will throw an UnspportedMethodException
. But if all you need is a fixed-sized list, you can stop here.
Next the Arrays.ArrayList<T>
constructed in #1 gets passed to the constructor ArrayList<>(Collection<T>)
where the collection.toArray()
method is called to clone it.
public ArrayList(Collection<? extends E> collection) {
......
Object[] a = collection.toArray();
}
Next the constructor decides whether to adopt the cloned array, or copy it again to remove the subclass type. Since Arrays.asList(T...)
internally uses an array of type T, the very same one we passed as the parameter, the constructor always rejects using the clone unless T is a pure Object. (E.g. String, Integer, etc all get copied again, because they extend Object).
if (a.getClass() != Object[].class) {
//Arrays.asList(T...) is always true here
//when T subclasses object
Object[] newArray = new Object[a.length];
System.arraycopy(a, 0, newArray, 0, a.length);
a = newArray;
}
array = a;
size = a.length;
Thus, our data was copied 3x just to explicitly initialize the ArrayList. We could get it down to 2x if we force Arrays.AsList(T...)
to construct an Object[] array, so that ArrayList can later adopt it, which can be done as follows:
(List<Integer>)(List<?>) new ArrayList<>(Arrays.asList((Object) 1, 2 ,3, 4, 5));
Or maybe just adding the elements after creation might still be the most efficient.
try
time="12:12:12";
tt=time.split(":");
sec=tt[0]*3600+tt[1]*60+tt[2]*1;
you can do it using ajax or by sending http headers+content like:
POST /xyz.php HTTP/1.1
Host: www.mysite.com
User-Agent: Mozilla/4.0
Content-Length: 27
Content-Type: application/x-www-form-urlencoded
userid=joe&password=guessme
As far as I know, this is a work-in-progress. They want to do it, but it's not released yet. See 1377 (the "new" 495 that was mentioned by @Andy).
I ended up implementing the "generate .yml as part of CI" approach as proposed by @Thomas.
fopen() is a C library function and so you won't see any syscall instructions in your code, just a regular function call. At some point, it does call open(2), but it does that via a trampoline. There is simply a jump to the VDSO page, which is provided by the kernel to every process. The VDSO then provides code to make the system call. On modern processors, the SYSCALL or SYSENTER instructions will be used, but you can also use INT 80h on x86 processors.
I had the same issue in Win7 regarding running a script (.bat) at startup (When the computer boots vs when someone logs in) that would modify the network parameters using netsh. What ended up working for me was the following:
Click on “Create New Task” on the right hand side of the screen and set the parameters as follows:
a. Set the user account to SYSTEM
b. Choose "Run with highest privileges"
c. Choose the OS for Windows7
On main menu;
View -> Indentation -> Convert Indentation to Tabs / Spaces
There also exists a UNIQUE KEY. The main difference between PRIMARY KEY and UNIQUE KEY is that the PRIMARY KEY never takes NULL value while a UNIQUE KEY may take NULL value. Also, there can be only one PRIMARY KEY in a table while UNIQUE KEY may be more than one.
First check whether the java classes are compiled or not in your [PROJECT_NAME]\target\classes directory.
If not you have some compilation errors in your java classes.
In my case, setting Copy to Output Directory
to Copy Always
and Build did not do the trick, while Rebuild did.
Hope this helps someone!
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<script
src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js">
<title>JSP Page</title>
<script>
$(document).ready(function(){
<% String name = "phuongmychi.github.io" ;%> // jsp vari
var name = "<%=name %>" // call var to js
$("#id").html(name); //output to html
});
</script>
</head>
<body>
<h1 id='id'>!</h1>
</body>
There are so many good answers to doing it with java Script or jQuery here.
I will add a very easy way to archive this using just HTML5.
<input type="number" name="quantity" min="0" max="9">
you can use this command
pg_dump --table=yourTable --data-only --column-inserts yourDataBase > file.sql
you should change yourTable, yourDataBase to your case
This is the right answer http://stackoverflow.com/questions/6990767/inject-bean-reference-into-a-quartz-job-in-spring/15211030#15211030. and will work for most of the folks. But if your web.xml does is not aware of all applicationContext.xml files, quartz job will not be able to invoke those beans. I had to do an extra layer to inject additional applicationContext files
public class MYSpringBeanJobFactory extends SpringBeanJobFactory
implements ApplicationContextAware {
private transient AutowireCapableBeanFactory beanFactory;
@Override
public void setApplicationContext(final ApplicationContext context) {
try {
PathMatchingResourcePatternResolver pmrl = new PathMatchingResourcePatternResolver(context.getClassLoader());
Resource[] resources = new Resource[0];
GenericApplicationContext createdContext = null ;
resources = pmrl.getResources(
"classpath*:my-abc-integration-applicationContext.xml"
);
for (Resource r : resources) {
createdContext = new GenericApplicationContext(context);
XmlBeanDefinitionReader reader = new XmlBeanDefinitionReader(createdContext);
int i = reader.loadBeanDefinitions(r);
}
createdContext.refresh();//important else you will get exceptions.
beanFactory = createdContext.getAutowireCapableBeanFactory();
} catch (IOException e) {
e.printStackTrace();
}
}
@Override
protected Object createJobInstance(final TriggerFiredBundle bundle)
throws Exception {
final Object job = super.createJobInstance(bundle);
beanFactory.autowireBean(job);
return job;
}
}
You can add any number of context files you want your quartz to be aware of.
**<HEAD>**
< link rel="icon" href="directory/image.png">
Then run and enjoy it
I use $(document.createElement('div'));
Benchmarking shows this technique is the fastest. I speculate this is because jQuery doesn't have to identify it as an element and create the element itself.
You should really run benchmarks with different Javascript engines and weigh your audience with the results. Make a decision from there.
Here is my solution:
chrome.runtime.onMessage.addListener(function(request, sender) {
if (request.action == "getSource") {
this.pageSource = request.source;
var title = this.pageSource.match(/<title[^>]*>([^<]+)<\/title>/)[1];
alert(title)
}
});
chrome.tabs.query({ active: true, currentWindow: true }, tabs => {
chrome.tabs.executeScript(
tabs[0].id,
{ code: 'var s = document.documentElement.outerHTML; chrome.runtime.sendMessage({action: "getSource", source: s});' }
);
});
You can try below code:
$("Your button id or class").live("click", function(){
$('#detailInfo').html('set your value as you want');
});
Good Luck...
This works for me.
json.load() accepts file object, parses the JSON data, populates a Python dictionary with the data and returns it back to you.
Suppose JSON file is like this:
{
"emp_details":[
{
"emp_name":"John",
"emp_emailId":"[email protected]"
},
{
"emp_name":"Aditya",
"emp_emailId":"[email protected]"
}
]
}
import json
# Opening JSON file
f = open('data.json',)
# returns JSON object as
# a dictionary
data = json.load(f)
# Iterating through the json
# list
for i in data['emp_details']:
print(i)
# Closing file
f.close()
#Output:
{'emp_name':'John','emp_emailId':'[email protected]'}
{'emp_name':'Aditya','emp_emailId':'[email protected]'}
You need to encode Unicode explicitly before writing to a file, otherwise Python does it for you with the default ASCII codec.
Pick an encoding and stick with it:
f.write(printinfo.encode('utf8') + '\n')
or use io.open()
to create a file object that'll encode for you as you write to the file:
import io
f = io.open(filename, 'w', encoding='utf8')
You may want to read:
Pragmatic Unicode by Ned Batchelder
The Absolute Minimum Every Software Developer Absolutely, Positively Must Know About Unicode and Character Sets (No Excuses!) by Joel Spolsky
before continuing.
After trying all the solutions and none giving acceptable results (maybe because I was working on a device with default very large fonts), the following worked for me (COMPLEX_UNIT_DIP = Device Independent Pixels):
textView.setTextSize(TypedValue.COMPLEX_UNIT_DIP, 14);
Your query would work already - except that you are running into naming conflicts or just confusing the output column (the CASE
expression) with source column result
, which has different content.
...
GROUP BY model.name, attempt.type, attempt.result
...
You need to GROUP BY
your CASE
expression instead of your source column:
...
GROUP BY model.name, attempt.type
, CASE WHEN attempt.result = 0 THEN 0 ELSE 1 END
...
Or provide a column alias that's different from any column name in the FROM
list - or else that column takes precedence:
SELECT ...
, CASE WHEN attempt.result = 0 THEN 0 ELSE 1 END AS result1
...
GROUP BY model.name, attempt.type, result1
...
The SQL standard is rather peculiar in this respect. Quoting the manual here:
An output column's name can be used to refer to the column's value in
ORDER BY
andGROUP BY
clauses, but not in theWHERE
orHAVING
clauses; there you must write out the expression instead.
And:
If an
ORDER BY
expression is a simple name that matches both an output column name and an input column name,ORDER BY
will interpret it as the output column name. This is the opposite of the choice thatGROUP BY
will make in the same situation. This inconsistency is made to be compatible with the SQL standard.
Bold emphasis mine.
These conflicts can be avoided by using positional references (ordinal numbers) in GROUP BY
and ORDER BY
, referencing items in the SELECT
list from left to right. See solution below.
The drawback is, that this may be harder to read and vulnerable to edits in the SELECT
list (one might forget to adapt positional references accordingly).
But you do not have to add the column day
to the GROUP BY
clause, as long as it holds a constant value (CURRENT_DATE-1
).
Rewritten and simplified with proper JOIN syntax and positional references it could look like this:
SELECT m.name
, a.type
, CASE WHEN a.result = 0 THEN 0 ELSE 1 END AS result
, CURRENT_DATE - 1 AS day
, count(*) AS ct
FROM attempt a
JOIN prod_hw_id p USING (hard_id)
JOIN model m USING (model_id)
WHERE ts >= '2013-11-06 00:00:00'
AND ts < '2013-11-07 00:00:00'
GROUP BY 1,2,3
ORDER BY 1,2,3;
Also note that I am avoiding the column name time
. That's a reserved word and should never be used as identifier. Besides, your "time" obviously is a timestamp
or date
, so that is rather misleading.
if you have a char/varchar value formatted as the standard GUID, you can simply store it as BINARY(16) using the simple CAST(MyString AS BINARY16), without all those mind-boggling sequences of CONCAT + SUBSTR.
BINARY(16) fields are compared/sorted/indexed much faster than strings, and also take two times less space in the database
You could try this
Calendar today = Calendar.getInstance ();
today.add(Calendar.DAY_OF_YEAR, 0);
today.set(Calendar.HOUR_OF_DAY, hrs);
today.set(Calendar.MINUTE, mins );
today.set(Calendar.SECOND, 0);
and you could use today.getTime()
to retrieve value and compare.