See it in Activity Lifecycle (at Android Developers).
Called when the activity is first created. This is where you should do all of your normal static set up: create views, bind data to lists, etc. This method also provides you with a Bundle containing the activity's previously frozen state, if there was one. Always followed by onStart().
Called after your activity has been stopped, prior to it being started again. Always followed by onStart()
Called when the activity is becoming visible to the user. Followed by onResume() if the activity comes to the foreground.
Called when the activity will start interacting with the user. At this point your activity is at the top of the activity stack, with user input going to it. Always followed by onPause().
Called as part of the activity lifecycle when an activity is going into the background, but has not (yet) been killed. The counterpart to onResume(). When activity B is launched in front of activity A, this callback will be invoked on A. B will not be created until A's onPause() returns, so be sure to not do anything lengthy here.
Called when you are no longer visible to the user. You will next receive either onRestart(), onDestroy(), or nothing, depending on later user activity. Note that this method may never be called, in low memory situations where the system does not have enough memory to keep your activity's process running after its onPause() method is called.
The final call you receive before your activity is destroyed. This can happen either because the activity is finishing (someone called finish() on it, or because the system is temporarily destroying this instance of the activity to save space. You can distinguish between> these two scenarios with the isFinishing() method.
When the Activity first time loads the events are called as below:
onCreate()
onStart()
onResume()
When you click on Phone button the Activity goes to the background and the below events are called:
onPause()
onStop()
Exit the phone dialer and the below events will be called:
onRestart()
onStart()
onResume()
When you click the back button OR try to finish() the activity the events are called as below:
onPause()
onStop()
onDestroy()
The Android OS uses a priority queue to assist in managing activities running on the device. Based on the state a particular Android activity is in, it will be assigned a certain priority within the OS. This priority system helps Android identify activities that are no longer in use, allowing the OS to reclaim memory and resources. The following diagram illustrates the states an activity can go through, during its lifetime:
These states can be broken into three main groups as follows:
Active or Running - Activities are considered active or running if they are in the foreground, also known as the top of the activity stack. This is considered the highest priority activity in the Android Activity stack, and as such will only be killed by the OS in extreme situations, such as if the activity tries to use more memory than is available on the device as this could cause the UI to become unresponsive.
Paused - When the device goes to sleep, or an activity is still visible but partially hidden by a new, non-full-sized or transparent activity, the activity is considered paused. Paused activities are still alive, that is, they maintain all state and member information, and remain attached to the window manager. This is considered to be the second highest priority activity in the Android Activity stack and, as such, will only be killed by the OS if killing this activity will satisfy the resource requirements needed to keep the Active/Running Activity stable and responsive.
Stopped - Activities that are completely obscured by another activity are considered stopped or in the background. Stopped activities still try to retain their state and member information for as long as possible, but stopped activities are considered to be the lowest priority of the three states and, as such, the OS will kill activities in this state first to satisfy the resource requirements of higher priority activities.
*Sample activity to understand the life cycle**
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
public class MainActivity extends Activity {
String tag = "LifeCycleEvents";
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Log.d(tag, "In the onCreate() event");
}
public void onStart()
{
super.onStart();
Log.d(tag, "In the onStart() event");
}
public void onRestart()
{
super.onRestart();
Log.d(tag, "In the onRestart() event");
}
public void onResume()
{
super.onResume();
Log.d(tag, "In the onResume() event");
}
public void onPause()
{
super.onPause();
Log.d(tag, "In the onPause() event");
}
public void onStop()
{
super.onStop();
Log.d(tag, "In the onStop() event");
}
public void onDestroy()
{
super.onDestroy();
Log.d(tag, "In the onDestroy() event");
}
}
KOTLIN
Any Activity that restarts has its onResume() method executed first.
To use this method, do this:
override fun onResume() {
super.onResume()
// your code here
}
I'm not quite sure if this question is still bothering you, since it has been several months. But I would like to share how I dealt with this. Here is the source code:
int FLAG = 0;
private View rootView;
private LinearLayout parentView;
/**
* The fragment argument representing the section number for this fragment.
*/
private static final String ARG_SECTION_NUMBER = "section_number";
/**
* Returns a new instance of this fragment for the given section number.
*/
public static Fragment2 newInstance(Bundle bundle) {
Fragment2 fragment = new Fragment2();
Bundle args = bundle;
fragment.setArguments(args);
return fragment;
}
public Fragment2() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
super.onCreateView(inflater, container, savedInstanceState);
Log.e("onCreateView","onCreateView");
if(FLAG!=12321){
rootView = inflater.inflate(R.layout.fragment_create_new_album, container, false);
changeFLAG(12321);
}
parentView=new LinearLayout(getActivity());
parentView.addView(rootView);
return parentView;
}
/* (non-Javadoc)
* @see android.support.v4.app.Fragment#onDestroy()
*/
@Override
public void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
Log.e("onDestroy","onDestroy");
}
/* (non-Javadoc)
* @see android.support.v4.app.Fragment#onStart()
*/
@Override
public void onStart() {
// TODO Auto-generated method stub
super.onStart();
Log.e("onstart","onstart");
}
/* (non-Javadoc)
* @see android.support.v4.app.Fragment#onStop()
*/
@Override
public void onStop() {
// TODO Auto-generated method stub
super.onStop();
if(false){
Bundle savedInstance=getArguments();
LinearLayout viewParent;
viewParent= (LinearLayout) rootView.getParent();
viewParent.removeView(rootView);
}
parentView.removeView(rootView);
Log.e("onStop","onstop");
}
@Override
public void onPause() {
super.onPause();
Log.e("onpause","onpause");
}
@Override
public void onResume() {
super.onResume();
Log.e("onResume","onResume");
}
And here is the MainActivity:
/**
* Fragment managing the behaviors, interactions and presentation of the
* navigation drawer.
*/
private NavigationDrawerFragment mNavigationDrawerFragment;
/**
* Used to store the last screen title. For use in
* {@link #restoreActionBar()}.
*/
public static boolean fragment2InstanceExists=false;
public static Fragment2 fragment2=null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
setContentView(R.layout.activity_main);
mNavigationDrawerFragment = (NavigationDrawerFragment) getSupportFragmentManager()
.findFragmentById(R.id.navigation_drawer);
mTitle = getTitle();
// Set up the drawer.
mNavigationDrawerFragment.setUp(R.id.navigation_drawer,
(DrawerLayout) findViewById(R.id.drawer_layout));
}
@Override
public void onNavigationDrawerItemSelected(int position) {
// update the main content by replacing fragments
FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction fragmentTransaction=fragmentManager.beginTransaction();
switch(position){
case 0:
fragmentTransaction.addToBackStack(null);
fragmentTransaction.replace(R.id.container, Fragment1.newInstance(position+1)).commit();
break;
case 1:
Bundle bundle=new Bundle();
bundle.putInt("source_of_create",CommonMethods.CREATE_FROM_ACTIVITY);
if(!fragment2InstanceExists){
fragment2=Fragment2.newInstance(bundle);
fragment2InstanceExists=true;
}
fragmentTransaction.addToBackStack(null);
fragmentTransaction.replace(R.id.container, fragment2).commit();
break;
case 2:
fragmentTransaction.addToBackStack(null);
fragmentTransaction.replace(R.id.container, FolderExplorerFragment.newInstance(position+1)).commit();
break;
default:
break;
}
}
The parentView
is the keypoint.
Normally, when onCreateView
, we just use return rootView
. But now, I add rootView to parentView
, and then return parentView
. To prevent "The specified child already has a parent. You must call removeView()
on the ..." error, we need to call parentView.removeView(rootView)
, or the method I supplied is useless.
I also would like to share how I found it. Firstly, I set up a boolean to indicate if the instance exists. When the instance exists, the rootView
will not be inflated again. But then, logcat gave the child already has a parent thing, so I decided to use another parent as a intermediate Parent View. That's how it works.
Hope it's helpful to you.
A fragment must always be embedded in an activity and the fragment's lifecycle is directly affected by the host activity's lifecycle. For example, when the activity is paused, so are all fragments in it, and when the activity is destroyed, so are all fragments
This maybe due to an incorrect table name from where you are fetching the data. Please verify the name of the table you mentioned in asmx file and the table created in database.
The solution in a more elegant way.
var myData=['237','124','255','124','366','255'];
console.log(Array.from(new Set(myData)).sort());
_x000D_
I know the question is very old, but maybe someone will come in handy
If the size of drawable resouce is fixed, you can do like this:
<Button
android:background="@drawable/rounded_button_green"
style="?android:attr/selectableItemBackground"
android:layout_height="wrap_content"
app:layout_widthPercent="70%"
android:drawableRight="@drawable/ic_clear_black_24dp"
android:paddingRight="10dp"
android:paddingLeft="34dp"
tools:text="example" />
The key here is that:
android:drawableRight="@drawable/ic_clear_black_24dp"
android:paddingRight="10dp"
android:paddingLeft="34dp"
That is, the size of drawable resource plus paddingRight is the paddingLeft.
Zach is correct about the direct answer to the question.
An interesting side note is that the following two loops do not execute the same:
for i=1:10000
% do something
end
for i=[1:10000]
% do something
end
The first loop creates a variable i
that is a scalar and it iterates it like a C for loop. Note that if you modify i
in the loop body, the modified value will be ignored, as Zach says. In the second case, Matlab creates a 10k-element array, then it walks all elements of the array.
What this means is that
for i=1:inf
% do something
end
works, but
for i=[1:inf]
% do something
end
does not (because this one would require allocating infinite memory). See Loren's blog for details.
Also note that you can iterate over cell arrays.
Adding to the above-accepted answer so that it helps those who are using tensorflow 2.0
import tensorflow as tf
# some data
c1 = tf.constant([[1, 1, 1], [2, 2, 2]], dtype=tf.float32)
c2 = tf.constant([[2, 2, 2], [3, 3, 3]], dtype=tf.float32)
c3 = tf.constant([[3, 3, 3], [4, 4, 4]], dtype=tf.float32)
# bake layers x1, x2, x3
x1 = tf.keras.layers.Dense(10)(c1)
x2 = tf.keras.layers.Dense(10)(c2)
x3 = tf.keras.layers.Dense(10)(c3)
# merged layer y1
y1 = tf.keras.layers.Concatenate(axis=1)([x1, x2])
# merged layer y2
y2 = tf.keras.layers.Concatenate(axis=1)([y1, x3])
# print info
print("-"*30)
print("x1", x1.shape, "x2", x2.shape, "x3", x3.shape)
print("y1", y1.shape)
print("y2", y2.shape)
print("-"*30)
Result:
------------------------------
x1 (2, 10) x2 (2, 10) x3 (2, 10)
y1 (2, 20)
y2 (2, 30)
------------------------------
Use this:
<link onclick='doWithThisElement(this.attributes["id"].value)' />
In the context of the onclick JavaScript, this refers to the current element (which in this case is the whole HTML element link).
With Vagrant now you can have Docker as a provider. http://docs.vagrantup.com/v2/docker/. Docker provider can be used instead of VirtualBox or VMware.
Please note that you can also use Docker for provisioning with Vagrant. This is very different than using Docker as a provider. http://docs.vagrantup.com/v2/provisioning/docker.html
This means you can replace Chef or Puppet with Docker. You can use combinations like Docker as provider (VM) with Chef as provisioner. Or you can use VirtualBox as provider and Docker as provisioner.
They're often interchangeable, but a method usually refers to a subroutine inside a class, and a function usually refers to a subroutine outside the class. for instance, in Ruby:
# function
def putSqr(a)
puts a ** 2
end
class Math2
# method
def putSqr(a)
puts a ** 2
end
end
In Java, where everything (except package and import statements) must be inside the class, people almost always refer to them as "methods".
Contrary to @Andre Luus, setting Height="Auto"
will not make the TextBox
stretch. The solution I found was to set VerticalAlignment="Stretch"
This will match up to the first occurrence only in each string and will ignore subsequent occurrences.
/^([^;]*);*/
states_list = states.split(' ')
In regards to your edit:
from random import choice
random_state = choice(states_list)
A few comments:
analog=True
in the call to butter
, and you should use scipy.signal.freqz
(not freqs
) to generate the frequency response.Here's my modified version of your script, followed by the plot that it generates.
import numpy as np
from scipy.signal import butter, lfilter, freqz
import matplotlib.pyplot as plt
def butter_lowpass(cutoff, fs, order=5):
nyq = 0.5 * fs
normal_cutoff = cutoff / nyq
b, a = butter(order, normal_cutoff, btype='low', analog=False)
return b, a
def butter_lowpass_filter(data, cutoff, fs, order=5):
b, a = butter_lowpass(cutoff, fs, order=order)
y = lfilter(b, a, data)
return y
# Filter requirements.
order = 6
fs = 30.0 # sample rate, Hz
cutoff = 3.667 # desired cutoff frequency of the filter, Hz
# Get the filter coefficients so we can check its frequency response.
b, a = butter_lowpass(cutoff, fs, order)
# Plot the frequency response.
w, h = freqz(b, a, worN=8000)
plt.subplot(2, 1, 1)
plt.plot(0.5*fs*w/np.pi, np.abs(h), 'b')
plt.plot(cutoff, 0.5*np.sqrt(2), 'ko')
plt.axvline(cutoff, color='k')
plt.xlim(0, 0.5*fs)
plt.title("Lowpass Filter Frequency Response")
plt.xlabel('Frequency [Hz]')
plt.grid()
# Demonstrate the use of the filter.
# First make some data to be filtered.
T = 5.0 # seconds
n = int(T * fs) # total number of samples
t = np.linspace(0, T, n, endpoint=False)
# "Noisy" data. We want to recover the 1.2 Hz signal from this.
data = np.sin(1.2*2*np.pi*t) + 1.5*np.cos(9*2*np.pi*t) + 0.5*np.sin(12.0*2*np.pi*t)
# Filter the data, and plot both the original and filtered signals.
y = butter_lowpass_filter(data, cutoff, fs, order)
plt.subplot(2, 1, 2)
plt.plot(t, data, 'b-', label='data')
plt.plot(t, y, 'g-', linewidth=2, label='filtered data')
plt.xlabel('Time [sec]')
plt.grid()
plt.legend()
plt.subplots_adjust(hspace=0.35)
plt.show()
I believe old solutions do not work with swift3.
If you know number rows in table you can use :
tableView.scrollToRow(
at: IndexPath(item: listCountInSection-1, section: sectionCount - 1 ),
at: .top,
animated: true)
Try npm install -g typescript@latest
. You can also use npm update
instead of install, without the latest modifier.
The Javadoc for String reveals that String.split()
is what you're looking for in regard to explode
.
Java does not include a "implode" of "join" equivalent. Rather than including a giant external dependency for a simple function as the other answers suggest, you may just want to write a couple lines of code. There's a number of ways to accomplish that; using a StringBuilder
is one:
String foo = "This,that,other";
String[] split = foo.split(",");
StringBuilder sb = new StringBuilder();
for (int i = 0; i < split.length; i++) {
sb.append(split[i]);
if (i != split.length - 1) {
sb.append(" ");
}
}
String joined = sb.toString();
What worked for me is the following. I appears like the RMDir command will issue “The directory is not empty” nearly all the time...
:Cleanup_Temporary_Files_and_Folders
Erase /F /S /Q C:\MyDir
RMDir /S /Q C:\MyDir
If Exist C:\MyDir GoTo Cleanup_Temporary_Files_and_Folders
I wrote an easy wrapper that allows you to register styles and scrips in every partial view dynamically into the head tag.
It is based on the DynamicHeader jsakamoto put up, but it has some performance improvements & tweaks.
It is very easy to use, and versatile.
The usage:
@{
DynamicHeader.AddStyleSheet("/Content/Css/footer.css", ResourceType.Layout);
DynamicHeader.AddStyleSheet("/Content/Css/controls.css", ResourceType.Infrastructure);
DynamicHeader.AddScript("/Content/Js/Controls.js", ResourceType.Infrastructure);
DynamicHeader.AddStyleSheet("/Content/Css/homepage.css");
}
You can find the full code, explanations and examples inside: Add Styles & Scripts Dynamically to Head Tag
Note that SimpleDateFormat format pattern Z is for RFC 822 time zone and pattern X is for ISO 8601 (this standard supports single letter time zone names like Z for Zulu).
So new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSX")
produces a format that can parse both "2013-03-11T01:38:18.309Z"
and "2013-03-11T01:38:18.309+0000"
and will give you the same result.
Unfortunately, as far as I can tell, you can't get this format to generate the Z for Zulu version, which is annoying.
I actually have more trouble on the JavaScript side to deal with both formats.
As an empty string is not valid JSON it would be incorrect for JSON.parse('')
to return null
because "null"
is valid JSON. e.g.
JSON.parse("null");
returns null
. It would be a mistake for invalid JSON to also be parsed to null.
While an empty string is not valid JSON two quotes is valid JSON. This is an important distinction.
Which is to say a string that contains two quotes is not the same thing as an empty string.
JSON.parse('""');
will parse correctly, (returning an empty string). But
JSON.parse('');
will not.
Valid minimal JSON strings are
The empty object '{}'
The empty array '[]'
The string that is empty '""'
A number e.g. '123.4'
The boolean value true 'true'
The boolean value false 'false'
The null value 'null'
You are not writing your code inside any function, you can return from functions only. Remove return statement and just print the value you want.
The formats and codecs supported by your build of ffmpeg
can vary due the version, how it was compiled, and if any external libraries, such as libx264, were supported during compilation.
List all formats:
ffmpeg -formats
Display options specific to, and information about, a particular muxer:
ffmpeg -h muxer=matroska
Display options specific to, and information about, a particular demuxer:
ffmpeg -h demuxer=gif
List all codecs:
ffmpeg -codecs
List all encoders:
ffmpeg -encoders
List all decoders:
ffmpeg -decoders
Display options specific to, and information about, a particular encoder:
ffmpeg -h encoder=mpeg4
Display options specific to, and information about, a particular decoder:
ffmpeg -h decoder=aac
There is a key near the top of the output that describes each letter that precedes the name of the format, encoder, decoder, or codec:
$ ffmpeg -encoders
[…]
Encoders:
V..... = Video
A..... = Audio
S..... = Subtitle
.F.... = Frame-level multithreading
..S... = Slice-level multithreading
...X.. = Codec is experimental
....B. = Supports draw_horiz_band
.....D = Supports direct rendering method 1
------
[…]
V.S... mpeg4 MPEG-4 part 2
In this example V.S...
indicates that the encoder mpeg4
is a V
ideo encoder and supports S
lice-level multithreading.
additionally to @franc's answer you can use this from sql interface:
select
prosrc
from pg_trigger, pg_proc
where
pg_proc.oid=pg_trigger.tgfoid
and pg_trigger.tgname like '<name>'
(taken from here: http://www.postgresql.org/message-id/Pine.BSF.4.10.10009140858080.28013-100000@megazone23.bigpanda.com)
Got same trouble and nothing helped. The problem is that I actually haven't any duplicates, this error appears after switching project namespace from MyCuteProject
to MyCuteProject.Web
.
In the end I realized that source of error is a global.asax
file — XML markup, not .cs
-codebehind. Check namespace in it — that's helped me.
You can do it like this.
Models.TestModels obj = new Models.TestModels();
foreach (var item in obj.sp)
{
Console.Write(item.Key);
Console.Write(item.Value.name);
Console.Write(item.Value.age);
}
The problem you most likely have right now is that the collection is private. If you add public to the beginning of this line
Dictionary<int, dynamic> sp = new Dictionary<int, dynamic>
You should be able to access it from the function inside your controller.
Edit: Adding functional example of the full TestModels
implementation.
Your TestModels
class should look something like this.
public class TestModels
{
public Dictionary<int, dynamic> sp = new Dictionary<int, dynamic>();
public TestModels()
{
sp.Add(0, new {name="Test One", age=5});
sp.Add(1, new {name="Test Two", age=7});
}
}
You probably want to read up on the dynamic keyword as well.
This is more general than .NET and Windows. Managed is an environment where you have automatic memory management, garbage collection, type safety, ... unmanaged is everything else. So for example .NET is a managed environment and C/C++ is unmanaged.
Lately, BitBucket needs you to generate an App Password:
Settings/Access Management/App Passwords.
Maybe You should try scrollIntoView.
document.getElementById('id').scrollIntoView();
This will scroll to your Element.
If you set a default schema for your DB Connection then Select will run in readonly mode until you set explicitly your schema
USE mydb;
SELECT * FROM mytable
this will also run in edit mode:
SELECT * FROM mydb.mytable
(MySql 5.2.42 / MacOsX)
I hope this helps.
append
is appending an element to a list. if you want to extend the list with the new list you need to use extend
.
>>> c = [1, 2, 3]
>>> c.extend(c)
>>> c
[1, 2, 3, 1, 2, 3]
From version 0.21.1 you can also use .at
method. There are some differences compared to .loc
as mentioned here - pandas .at versus .loc, but it's faster on single value replacement
I like Consolas
a lot. This top-10 list is a good resource for others. It includes examples and descriptions.
I run into my share of trouble trying to access data from store without binding it to a component, and most of it was because store was loaded trough ajax, so it took to use the load event in order to read the data. This worked:
store.load();
store.on('load', function(store, records) {
for (var i = 0; i < records.length; i++) {
console.log(records[i].get('name'));
};
});
I had similar issues. I work on a Windows tool chain with a shared repository with Linux guys, and they happily create files with the same (except for case) names in a given folder.
The effect is that I can clone the repository and immediately have dozens of 'modified' files that, if I checked in, would create havoc.
I have Windows set to case sensitive and Git to not ignore case, but it still fails (in the Win32 API calls apparently).
If I gitignore the files then I have to remember to not track the .gitignore file.
But I found a good answer here:
http://archive.robwilkerson.org/2010/03/02/git-tip-ignore-changes-to-tracked-files/index.html
Extending @Ryogi answer above, you can take advantage of the lower.tail
parameter like so:
qt(0.25/2, 40, lower.tail = FALSE)
# 75% confidence
qt(0.01/2, 40, lower.tail = FALSE)
# 99% confidence
Please NOTE that this procedure of adding the reporting services described by @Rich Shealer above will be iterated every time you start a different project. In order to avoid that:
If you may need to set up a different computer (eg, at home without internet), then keep your downloaded installers from the marketplace somewhere safe, ie:
Fetch the following libraries from the packages or bin folder of the application you have created with reporting services in it:
Install the 2 components from 1 above
You are now good to go! ReportViewer icon will be added to your toolbar, and you will also now find Report and ReportWizard templates added to your Common list of templates when you want to add a New Item... (Report) to your project
NB: When set up using Nuget package manager, the Report and ReportWizard templates are grouped under Reporting. Using my method described above however does not add the Reporting grouping in installed templates, but I dont think it is any trouble given that it enables you to quickly integrate rdlc without internet and without downloading what you already have from Nuget every time!
The most effective solution that I found is to define the parent element with display:flex
and align-items:center
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<style>
.myclass{
display:flex;
align-items:center;
background-color:grey;
color:#fff;
height:50px;
}
</style>
</head>
<body>
<div class="myclass">
<input type="checkbox">
<label>do you love Ananas?
</label>
</div>
</body>
</html>
OUTPUT:
Maybe your code is missing this line from the Microsoft example:
MyDataAdapter.SelectCommand.CommandType = CommandType.StoredProcedure
I assume you want to link to a library called foo, its filename is usually something link foo.dll
or libfoo.so
.
1. Find the library
You have to find the library. This is a good idea, even if you know the path to your library. CMake will error out if the library vanished or got a new name. This helps to spot error early and to make it clear to the user (may yourself) what causes a problem.
To find a library foo and store the path in FOO_LIB
use
find_library(FOO_LIB foo)
CMake will figure out itself how the actual file name is. It checks the usual places like /usr/lib
, /usr/lib64
and the paths in PATH
.
You already know the location of your library. Add it to the CMAKE_PREFIX_PATH
when you call CMake, then CMake will look for your library in the passed paths, too.
Sometimes you need to add hints or path suffixes, see the documentation for details: https://cmake.org/cmake/help/latest/command/find_library.html
2. Link the library
From 1. you have the full library name in FOO_LIB
. You use this to link the library to your target GLBall
as in
target_link_libraries(GLBall PRIVATE "${FOO_LIB}")
You should add PRIVATE
, PUBLIC
, or INTERFACE
after the target, cf. the documentation:
https://cmake.org/cmake/help/latest/command/target_link_libraries.html
If you don't add one of these visibility specifiers, it will either behave like PRIVATE
or PUBLIC
, depending on the CMake version and the policies set.
3. Add includes (This step might be not mandatory.)
If you also want to include header files, use find_path
similar to find_library
and search for a header file. Then add the include directory with target_include_directories
similar to target_link_libraries
.
Documentation: https://cmake.org/cmake/help/latest/command/find_path.html and https://cmake.org/cmake/help/latest/command/target_include_directories.html
If available for the external software, you can replace find_library
and find_path
by find_package
.
In PowerShell 3 and above I use the Copy-Item with New-Item.
copy-item -Path $file -Destination (new-item -type directory -force ("C:\Folder\sub\sub\" + $newSub)) -force -ea 0
I haven't tried it in ver 2.
all Values is always taken with .val()
.
see the code bellow:
var message = $('#message').val();
Using the luxon.js library, same can be achieved using startOf and endOf methods by passing the 'day' as parameter
var DateTime = luxon.DateTime;
DateTime.local().startOf('day').toUTC().toISO(); //2017-11-16T18:30:00.000Z
DateTime.local().endOf('day').toUTC().toISO(); //2017-11-17T18:29:59.999Z
DateTime.fromISO(new Date().toISOString()).startOf('day').toUTC().toISO(); //2017-11-16T18:30:00.000Z
remove .toUTC() if you need only the local time
To get crypto-strong random item form array use
let rndItem = a=> a[rnd()*a.length|0];_x000D_
let rnd = ()=> crypto.getRandomValues(new Uint32Array(1))[0]/2**32;_x000D_
_x000D_
var myArray = ['January', 'February', 'March'];_x000D_
_x000D_
console.log( rndItem(myArray) )
_x000D_
As an exploration of this topic, I have a presentation titled "Securing TodoMVC Using the Web Cryptography API" (video, code).
It uses the Web Cryptography API to store the todo list encrypted in localStorage by password protecting the application and using a password derived key for encryption. If you forget or lose the password, there is no recovery. (Disclaimer - it was a POC and not intended for production use.)
As the other answers state, this is still susceptible to XSS or malware installed on the client computer. However, any sensitive data would also be in memory when the data is stored on the server and the application is in use. I suggest that offline support may be the compelling use case.
In the end, encrypting localStorage probably only protects the data from attackers that have read only access to the system or its backups. It adds a small amount of defense in depth for OWASP Top 10 item A6-Sensitive Data Exposure, and allows you to answer "Is any of this data stored in clear text long term?" correctly.
Improving on @deepakssn answer. There is a possibility that you want the data to load a bit before we actually scroll to the bottom.
var scrollLoad = true;
$(window).scroll(function(){
if (scrollLoad && ($(document).height() - $(window).height())-$(window).scrollTop()<=800){
// fetch data when we are 800px above the document end
scrollLoad = false;
}
});
[var scrollLoad] is used to block the call until one new data is appended.
Hope this helps.
If you don't know the number of lines in your file, you don't have a size with which to init an array. In this case, it makes more sense to use a List :
List<String> tokens = new ArrayList<String>();
while (inFile1.hasNext()) {
tokens.add(inFile1.nextLine());
}
After that, if you need to, you can copy to an array :
String[] tokenArray = tokens.toArray(new String[0]);
Explain only shows how the optimizer thinks the query will execute.
To show the real plan, you will need to run the sql once. Then use the same session run the following:
@yoursql
select * from table(dbms_xplan.display_cursor())
This way can show the real plan used during execution. There are several other ways in showing plan using dbms_xplan. You can Google with term "dbms_xplan".
With ECMAScript 2015 you can do it directly in object declaration using bracket notation:
var obj = {
[key]: value
}
Where key
can be any sort of expression (e.g. a variable) returning a value:
var obj = {
['hello']: 'World',
[x + 2]: 42,
[someObject.getId()]: someVar
}
Here is another fancy way of doing this:
$ ls | grep .java | xargs -I {} javac {} ; jar -cf myJar.jar *.class
Which will grab all the .java files ( ls | grep .java
) from your current directory and compile them into .class (xargs -I {} javac {}
) and then create the jar file from the previously compiled classes (jar -cf myJar.jar *.class
).
You need to use -I
with each directory. But you can still delimit the directories with whitespace if you use (GNU) make's foreach
:
INC=$(DIR1) $(DIR2) ...
INC_PARAMS=$(foreach d, $(INC), -I$d)
You need to subscribe to a SMS gateway. There are thousands of those (try searching with google) and they are usually not free. For example this one has support for PHP.
iOs 10+ allow video autoplay inline. but you have to turn off "Low power mode" on your iPhone.
Even though this question is answered, providing an example as to what "theirs" and "ours" means in the case of git rebase vs merge. See this link
Git Rebase
theirs
is actually the current branch in the case of rebase. So the below set of commands are actually accepting your current branch changes over the remote branch.
# see current branch
$ git branch
...
* branch-a
# rebase preferring current branch changes during conflicts
$ git rebase -X theirs branch-b
Git Merge
For merge, the meaning of theirs
and ours
is reversed. So, to get the same effect during a merge, i.e., keep your current branch changes (ours
) over the remote branch being merged (theirs
).
# assuming branch-a is our current version
$ git merge -X ours branch-b # <- ours: branch-a, theirs: branch-b
Latest news:
Google announce that with Android N and Android Studio 2.1+, platform will support Java 8. Also stable version of studio 2.1 was released.
At last we can use lambda expressions. No more list filter in for loop. Horeeey.
Swift 3.0 or higher
import UIKit
class ViewController: UIViewController {
let device = UIDevice.current
override func viewDidLoad() {
super.viewDidLoad()
let model = device.model
print(model) // e.g. "iPhone"
let modelName = device.modelName
print(modelName) // e.g. "iPhone 6" /* see the extension */
let deviceName = device.name
print(deviceName) // e.g. "My iPhone"
let systemName = device.systemName
print(systemName) // e.g. "iOS"
let systemVersion = device.systemVersion
print(systemVersion) // e.g. "10.3.2"
if let identifierForVendor = device.identifierForVendor {
print(identifierForVendor) // e.g. "E1X2XX34-5X6X-7890-123X-XXX456C78901"
}
}
}
and add the following extension
extension UIDevice {
var modelName: String {
var systemInfo = utsname()
uname(&systemInfo)
let machineMirror = Mirror(reflecting: systemInfo.machine)
let identifier = machineMirror.children.reduce("") { identifier, element in
guard let value = element.value as? Int8, value != 0 else { return identifier }
return identifier + String(UnicodeScalar(UInt8(value)))
}
switch identifier {
case "iPod5,1": return "iPod Touch 5"
case "iPod7,1": return "iPod Touch 6"
case "iPhone3,1", "iPhone3,2", "iPhone3,3": return "iPhone 4"
case "iPhone4,1": return "iPhone 4s"
case "iPhone5,1", "iPhone5,2": return "iPhone 5"
case "iPhone5,3", "iPhone5,4": return "iPhone 5c"
case "iPhone6,1", "iPhone6,2": return "iPhone 5s"
case "iPhone7,2": return "iPhone 6"
case "iPhone7,1": return "iPhone 6 Plus"
case "iPhone8,1": return "iPhone 6s"
case "iPhone8,2": return "iPhone 6s Plus"
case "iPhone9,1", "iPhone9,3": return "iPhone 7"
case "iPhone9,2", "iPhone9,4": return "iPhone 7 Plus"
case "iPhone8,4": return "iPhone SE"
case "iPad2,1", "iPad2,2", "iPad2,3", "iPad2,4":return "iPad 2"
case "iPad3,1", "iPad3,2", "iPad3,3": return "iPad 3"
case "iPad3,4", "iPad3,5", "iPad3,6": return "iPad 4"
case "iPad4,1", "iPad4,2", "iPad4,3": return "iPad Air"
case "iPad5,3", "iPad5,4": return "iPad Air 2"
case "iPad6,11", "iPad6,12": return "iPad 5"
case "iPad2,5", "iPad2,6", "iPad2,7": return "iPad Mini"
case "iPad4,4", "iPad4,5", "iPad4,6": return "iPad Mini 2"
case "iPad4,7", "iPad4,8", "iPad4,9": return "iPad Mini 3"
case "iPad5,1", "iPad5,2": return "iPad Mini 4"
case "iPad6,3", "iPad6,4": return "iPad Pro 9.7 Inch"
case "iPad6,7", "iPad6,8": return "iPad Pro 12.9 Inch"
case "iPad7,1", "iPad7,2": return "iPad Pro 12.9 Inch 2. Generation"
case "iPad7,3", "iPad7,4": return "iPad Pro 10.5 Inch"
case "AppleTV5,3": return "Apple TV"
case "i386", "x86_64": return "Simulator"
default: return identifier
}
}
}
Using the Promise pattern:
function getImage(url){
return new Promise(function(resolve, reject){
var img = new Image()
img.onload = function(){
resolve(url)
}
img.onerror = function(){
reject(url)
}
img.src = url
})
}
And when calling the function we can handle its response or error quite neatly.
getImage('imgUrl').then(function(successUrl){
//do stufff
}).catch(function(errorUrl){
//do stuff
})
open the gradlew file with android studio, everything will be downloaded
try
{
$conn = new PDO("sqlsrv:Server=$server_name;Database=$db_name;ConnectionPooling=0", "", "");
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
}
catch(PDOException $e)
{
$e->getMessage();
}
You can use VLOOKUP, but this requires a wrapper function to return True
or False
. Not to mention it is (relatively) slow. Use COUNTIF or MATCH instead.
Fill down this formula in column K next to the existing values in column I (from I1
to I2691
):
=COUNTIF(<entire column E range>,<single column I value>)>0
=COUNTIF($E$1:$E$99504,$I1)>0
You can also use MATCH:
=NOT(ISNA(MATCH(<single column I value>,<entire column E range>)))
=NOT(ISNA(MATCH($I1,$E$1:$E$99504,0)))
This article is old, but I spent a hot minute trying to figure this out so I figured I would post an updated response. My main source is this wonderful PowerPoint: http://www.lrdc.pitt.edu/maplelab/slides/14-Plotting.pdf. Okay, here's what I did:
In this example, my data set is called 'Data' and I was comparing 'Touch' data against 'Gaze' data. The subjects were divided into two groups: 'Red' and 'Blue'.
`plot(Data$Touch[Data$Category == "Blue"], Data$Gaze[Data$Category == "Blue"], main = "Touch v Gaze", xlab = "Gaze(s)", ylab = "Touch (s)", col = "blue", pch = 20)`
This set of code creates a scatterplot of Touch v Gaze of my Blue group
par(new = TRUE)
This tells R to create a new plot. This second plot is laid over the first automatically by R when you run all the code together
plot(Data$Touch[Data$Category == "Red"], Data$Gaze[Data$Category == "Red"], axes = FALSE, xlab = "", ylab = "", col = "red", pch = 2)
This is the second plot. I found when I was coding these that R didn't just lay over the data points onto the Blue plot, but it also lay the axes, axes titles, and main title.
To get rid of the annoying overlap problem, I used the axes function to get rid of the axes themselves and set the titles to be blank.
legend(x = 60, y = 50, legend = c("Blue", "Red"), col = c("blue", "red"), pch = c(20, 2))
Adding a pretty legend to round out the project
This way may be a bit longer than the pretty ggplots but I did not want to learn something completely new today, hope this helps someone!
If you've followed Adam's instructions and you're still getting this error make sure you've installed the right variants (x86 or x64).
I had VC14x64 with PHP7x86 and I still got this error. Changing PHP7 to x64 fixed it. It's easy to miss you accidentally installed the wrong version.
Your second way is correct.
def foo(opts: dict = {}):
pass
print(foo.__annotations__)
this outputs
{'opts': <class 'dict'>}
It's true that's it's not listed in PEP 484, but type hints are an application of function annotations, which are documented in PEP 3107. The syntax section makes it clear that keyword arguments works with function annotations in this way.
I strongly advise against using mutable keyword arguments. More information here.
It also matters the order of the dependencies. I've had the same issue. And basically I had to put first the scope test
and then scope compile
dependencies in the pom.xml
. If I put first the scope compile
and then the scope test
it will fail.
See this solution: Bootstrap TouchCarousel. A drop-in perfection for Twitter Bootstrap's Carousel (v3) to enable gestures on touch devices. http://ixisio.github.io/bootstrap-touch-carousel/
You can use DateTime.ParseExact()
method.
Converts the specified string representation of a date and time to its DateTime equivalent using the specified format and culture-specific format information. The format of the string representation must match the specified format exactly.
DateTime date = DateTime.ParseExact("04/30/2013 23:00",
"MM/dd/yyyy HH:mm",
CultureInfo.InvariantCulture);
Here is a DEMO
.
hh
is for 12-hour clock from 01 to 12, HH
is for 24-hour clock from 00 to 23.
For more information, check Custom Date and Time Format Strings
You can use the Distinct
method to return an IEnumerable<T>
of distinct items:
var uniqueItems = yourList.Distinct();
And if you need the sequence of unique items returned as a List<T>
, you can add a call to ToList
:
var uniqueItemsList = yourList.Distinct().ToList();
9Rays used to have a decompiler, but I haven't checked in a while. It was not free, I remember...
There is also a new one (at least for me) named Dis#.
To exclude any file from a jar / target directory you can use the <excludes>
tag in your pom.xml file.
In the next example, all files with .properties
extension will not be included:
<build>
<resources>
<resource>
<directory>src/main/resources</directory>
<excludes>
<exclude>*.properties</exclude>
</excludes>
<filtering>false</filtering>
</resource>
</resources>
</build>
You can create a pre-filled form URL from within the Form Editor, as described in the documentation for Drive Forms. You'll end up with a URL like this, for example:
https://docs.google.com/forms/d/--form-id--/viewform?entry.726721210=Mike+Jones&entry.787184751=1975-05-09&entry.1381372492&entry.960923899
In this example, question 1, "Name", has an ID of 726721210
, while question 2, "Birthday" is 787184751
. Questions 3 and 4 are blank.
You could generate the pre-filled URL by adapting the one provided through the UI to be a template, like this:
function buildUrls() {
var template = "https://docs.google.com/forms/d/--form-id--/viewform?entry.726721210=##Name##&entry.787184751=##Birthday##&entry.1381372492&entry.960923899";
var ss = SpreadsheetApp.getActive().getSheetByName("Sheet1"); // Email, Name, Birthday
var data = ss.getDataRange().getValues();
// Skip headers, then build URLs for each row in Sheet1.
for (var i = 1; i < data.length; i++ ) {
var url = template.replace('##Name##',escape(data[i][1]))
.replace('##Birthday##',data[i][2].yyyymmdd()); // see yyyymmdd below
Logger.log(url); // You could do something more useful here.
}
};
This is effective enough - you could email the pre-filled URL to each person, and they'd have some questions already filled in.
Instead of creating our template using brute force, we can piece it together programmatically. This will have the advantage that we can re-use the code without needing to remember to change the template.
Each question in a form is an item. For this example, let's assume the form has only 4 questions, as you've described them. Item [0]
is "Name", [1]
is "Birthday", and so on.
We can create a form response, which we won't submit - instead, we'll partially complete the form, only to get the pre-filled form URL. Since the Forms API understands the data types of each item, we can avoid manipulating the string format of dates and other types, which simplifies our code somewhat.
(EDIT: There's a more general version of this in How to prefill Google form checkboxes?)
/**
* Use Form API to generate pre-filled form URLs
*/
function betterBuildUrls() {
var ss = SpreadsheetApp.getActive();
var sheet = ss.getSheetByName("Sheet1");
var data = ss.getDataRange().getValues(); // Data for pre-fill
var formUrl = ss.getFormUrl(); // Use form attached to sheet
var form = FormApp.openByUrl(formUrl);
var items = form.getItems();
// Skip headers, then build URLs for each row in Sheet1.
for (var i = 1; i < data.length; i++ ) {
// Create a form response object, and prefill it
var formResponse = form.createResponse();
// Prefill Name
var formItem = items[0].asTextItem();
var response = formItem.createResponse(data[i][1]);
formResponse.withItemResponse(response);
// Prefill Birthday
formItem = items[1].asDateItem();
response = formItem.createResponse(data[i][2]);
formResponse.withItemResponse(response);
// Get prefilled form URL
var url = formResponse.toPrefilledUrl();
Logger.log(url); // You could do something more useful here.
}
};
Any date item in the pre-filled form URL is expected to be in this format: yyyy-mm-dd
. This helper function extends the Date object with a new method to handle the conversion.
When reading dates from a spreadsheet, you'll end up with a javascript Date object, as long as the format of the data is recognizable as a date. (Your example is not recognizable, so instead of May 9th 1975
you could use 5/9/1975
.)
// From http://blog.justin.kelly.org.au/simple-javascript-function-to-format-the-date-as-yyyy-mm-dd/
Date.prototype.yyyymmdd = function() {
var yyyy = this.getFullYear().toString();
var mm = (this.getMonth()+1).toString(); // getMonth() is zero-based
var dd = this.getDate().toString();
return yyyy + '-' + (mm[1]?mm:"0"+mm[0]) + '-' + (dd[1]?dd:"0"+dd[0]);
};
You can create render the results (payments) and use a fancy way to iterate over items instead of adding a for loop.
const noGuest = 3;_x000D_
_x000D_
Array(noGuest).fill(noGuest).map(guest => {_x000D_
console.log(guest);_x000D_
});
_x000D_
Example:
renderPayments(noGuest) {
return Array(noGuest).fill(noGuest).map((guess, index) => {
return(
<View key={index}>
<View><TextInput /></View>
<View><TextInput /></View>
<View><TextInput /></View>
</View>
);
}
}
Then use it where you want it
render() {
return(
const { guest } = this.state;
...
{this.renderPayments(guest)}
);
}
Hope you got the idea.
If you want to understand this in simple Javascript check Array.prototype.fill()
I created it a long time ago, related question
String.Format = function (b) {
var a = arguments;
return b.replace(/(\{\{\d\}\}|\{\d\})/g, function (b) {
if (b.substring(0, 2) == "{{") return b;
var c = parseInt(b.match(/\d/)[0]);
return a[c + 1]
})
};
I HAD THE SAME PROBLEM AND THIS WORKED FOR ME :
Try these different settings in C:\wamp\bin\apache\apache2.2.8\bin\php.ini
Find:
post_max_size = 8M
upload_max_filesize = 2M
max_execution_time = 30
max_input_time = 60
memory_limit = 8M
Change to:
post_max_size = 750M
upload_max_filesize = 750M
max_execution_time = 5000
max_input_time = 5000
memory_limit = 1000M
Then restart your xampp or wamp to take effect
or stop then start only apache in xammp
Your server configuration settings allows users to upload files upto 16MB (because you have set upload_max_filesize = 16Mb) but the post_max_size accepts post data upto 8MB only. This is why it throws an error.
Quoted from the official PHP site:
To upload large files, post_max_size value must be larger than upload_max_filesize.
memory_limit should be larger than post_max_size
You should always set your post_max_size value greater than the upload_max_filesize value.
You can't use for
/in
on NodeList
s or HTMLCollection
s. However, you can use some Array.prototype
methods, as long as you .call()
them and pass in the NodeList
or HTMLCollection
as this
.
So consider the following as an alternative to jfriend00's for
loop:
var list= document.getElementsByClassName("events");
[].forEach.call(list, function(el) {
console.log(el.id);
});
There's a good article on MDN that covers this technique. Note their warning about browser compatibility though:
[...] passing a host object (like a
NodeList
) asthis
to a native method (such asforEach
) is not guaranteed to work in all browsers and is known to fail in some.
So while this approach is convenient, a for
loop may be the most browser-compatible solution.
Update (Aug 30, 2014): Eventually you'll be able to use ES6 for
/of
!
var list = document.getElementsByClassName("events");
for (const el of list)
console.log(el.id);
It's already supported in recent versions of Chrome and Firefox.
The instance of the inner class is created when instance of the outer class is created. Therefore the members and methods of the inner class have access to the members and methods of the instance (object) of the outer class. When the instance of the outer class goes out of scope, also the inner class instances cease to exist.
The static nested class doesn't have a concrete instance. It's just loaded when it's used for the first time (just like the static methods). It's a completely independent entity, whose methods and variables doesn't have any access to the instances of the outer class.
The static nested classes are not coupled with the outer object, they are faster, and they don't take heap/stack memory, because its not necessary to create instance of such class. Therefore the rule of thumb is to try to define static nested class, with as limited scope as possible (private >= class >= protected >= public), and then convert it to inner class (by removing "static" identifier) and loosen the scope, if it's really necessary.
Here is an example of passing mode as optional parameter
void myfunc(int blah, int mode = 0)
{
if (mode == 0)
do_something();
else
do_something_else();
}
you can call myfunc in both ways and both are valid
myfunc(10); // Mode will be set to default 0
myfunc(10, 1); // Mode will be set to 1
I got same error in my application.I am loading many controls in single page.In button click event i am clearing the controls.clearing the controls doesnot release the controls from memory.So dispose the controls from memory. I just commented controls.clear() method and include few lines of code to dispose the controls. Something like this
for each ctl as control in controlcollection
ctl.dispose()
Next
Firefox 64 adds support for the spec draft CSS Scrollbars Module Level 1, which adds two new properties of scrollbar-width
and scrollbar-color
which give some control over how scrollbars are displayed.
You can set scrollbar-color
to one of the following values (descriptions from MDN):
auto
Default platform rendering for the track portion of the scrollbar, in the absence of any other related scrollbar color properties.dark
Show a dark scrollbar, which can be either a dark variant of scrollbar provided by the platform, or a custom scrollbar with dark colors.light
Show a light scrollbar, which can be either a light variant of scrollbar provided by the platform, or a custom scrollbar with light colors.<color>
<color>
Applies the first color to the scrollbar thumb, the second to the scrollbar track.Note that dark
and light
values are not currently implemented in Firefox.
macOS notes:
The auto-hiding semi-transparent scrollbars that are the macOS default cannot be colored with this rule (they still choose their own contrasting color based on the background). Only the permanently showing scrollbars (System Preferences > Show Scroll Bars > Always) are colored.
Visual Demo:
.scroll {_x000D_
width: 20%;_x000D_
height: 100px;_x000D_
border: 1px solid grey;_x000D_
overflow: scroll;_x000D_
display: inline-block;_x000D_
}_x000D_
.scroll-color-auto {_x000D_
scrollbar-color: auto;_x000D_
}_x000D_
.scroll-color-dark {_x000D_
scrollbar-color: dark;_x000D_
}_x000D_
.scroll-color-light {_x000D_
scrollbar-color: light;_x000D_
}_x000D_
.scroll-color-colors {_x000D_
scrollbar-color: orange lightyellow;_x000D_
}
_x000D_
<div class="scroll scroll-color-auto">_x000D_
<p>auto</p><p>auto</p><p>auto</p><p>auto</p><p>auto</p><p>auto</p>_x000D_
</div>_x000D_
_x000D_
<div class="scroll scroll-color-dark">_x000D_
<p>dark</p><p>dark</p><p>dark</p><p>dark</p><p>dark</p><p>dark</p>_x000D_
</div>_x000D_
_x000D_
<div class="scroll scroll-color-light">_x000D_
<p>light</p><p>light</p><p>light</p><p>light</p><p>light</p><p>light</p>_x000D_
</div>_x000D_
_x000D_
<div class="scroll scroll-color-colors">_x000D_
<p>colors</p><p>colors</p><p>colors</p><p>colors</p><p>colors</p><p>colors</p>_x000D_
</div>
_x000D_
You can set scrollbar-width
to one of the following values (descriptions from MDN):
auto
The default scrollbar width for the platform.thin
A thin scrollbar width variant on platforms that provide that option, or a thinner scrollbar than the default platform scrollbar width.none
No scrollbar shown, however the element will still be scrollable.You can also set a specific length value, according to the spec. Both thin
and a specific length may not do anything on all platforms, and what exactly it does is platform-specific. In particular, Firefox doesn't appear to be currently support a specific length value (this comment on their bug tracker seems to confirm this). The thin
keywork does appear to be well-supported however, with macOS and Windows support at-least.
It's probably worth noting that the length value option and the entire scrollbar-width
property are being considered for removal in a future draft, and if that happens this particular property may be removed from Firefox in a future version.
Visual Demo:
.scroll {_x000D_
width: 30%;_x000D_
height: 100px;_x000D_
border: 1px solid grey;_x000D_
overflow: scroll;_x000D_
display: inline-block;_x000D_
}_x000D_
.scroll-width-auto {_x000D_
scrollbar-width: auto;_x000D_
}_x000D_
.scroll-width-thin {_x000D_
scrollbar-width: thin;_x000D_
}_x000D_
.scroll-width-none {_x000D_
scrollbar-width: none;_x000D_
}
_x000D_
<div class="scroll scroll-width-auto">_x000D_
<p>auto</p><p>auto</p><p>auto</p><p>auto</p><p>auto</p><p>auto</p>_x000D_
</div>_x000D_
_x000D_
<div class="scroll scroll-width-thin">_x000D_
<p>thin</p><p>thin</p><p>thin</p><p>thin</p><p>thin</p><p>thin</p>_x000D_
</div>_x000D_
_x000D_
<div class="scroll scroll-width-none">_x000D_
<p>none</p><p>none</p><p>none</p><p>none</p><p>none</p><p>none</p>_x000D_
</div>
_x000D_
The main difference between fork()
and exec()
is that,
The fork()
system call creates a clone of the currently running program. The original program continues execution with the next line of code after the fork() function call. The clone also starts execution at the next line of code.
Look at the following code that i got from http://timmurphy.org/2014/04/26/using-fork-in-cc-a-minimum-working-example/
#include <stdio.h>
#include <unistd.h>
int main(int argc, char **argv)
{
printf("--beginning of program\n");
int counter = 0;
pid_t pid = fork();
if (pid == 0)
{
// child process
int i = 0;
for (; i < 5; ++i)
{
printf("child process: counter=%d\n", ++counter);
}
}
else if (pid > 0)
{
// parent process
int j = 0;
for (; j < 5; ++j)
{
printf("parent process: counter=%d\n", ++counter);
}
}
else
{
// fork failed
printf("fork() failed!\n");
return 1;
}
printf("--end of program--\n");
return 0;
}
This program declares a counter variable, set to zero, before fork()
ing. After the fork call, we have two processes running in parallel, both incrementing their own version of counter. Each process will run to completion and exit. Because the processes run in parallel, we have no way of knowing which will finish first. Running this program will print something similar to what is shown below, though results may vary from one run to the next.
--beginning of program
parent process: counter=1
parent process: counter=2
parent process: counter=3
child process: counter=1
parent process: counter=4
child process: counter=2
parent process: counter=5
child process: counter=3
--end of program--
child process: counter=4
child process: counter=5
--end of program--
The exec()
family of system calls replaces the currently executing code of a process with another piece of code. The process retains its PID but it becomes a new program. For example, consider the following code:
#include <stdio.h>
#include <unistd.h>
main() {
char program[80],*args[3];
int i;
printf("Ready to exec()...\n");
strcpy(program,"date");
args[0]="date";
args[1]="-u";
args[2]=NULL;
i=execvp(program,args);
printf("i=%d ... did it work?\n",i);
}
This program calls the execvp()
function to replace its code with the date program. If the code is stored in a file named exec1.c, then executing it produces the following output:
Ready to exec()...
Tue Jul 15 20:17:53 UTC 2008
The program outputs the line -Ready to exec() . . . ? and after calling the execvp() function, replaces its code with the date program. Note that the line - . . . did it work? is not displayed, because at that point the code has been replaced. Instead, we see the output of executing -date -u.?
Sounds to me like at least one of those tables has defined UserID
as a uniqueidentifier
, not an int
. Did you check the data in each table? What does SELECT TOP 1 UserID FROM
each table yield? An int
or a GUID
?
EDIT
I think you have built a procedure based on all tables that contain a column named UserID. I think you should not have included the aspnet_Membership
table in your script, since it's not really one of "your" tables.
If you meant to design your tables around the aspnet_Membership
database, then why are the rest of the columns int
when that table clearly uses a uniqueidentifier
for the UserID
column?
<input class="text-box single-line" data-val="true" data-val-required="Name is required."
id="Name1" name="Name" type="text" value="">
$('#Name1').keypress(function () {
if (this.value.length >= 5) return false;
});
It for example happens in this case here:
void initializeJSP(unknownType Experiment);
Try using std::string
instead of just string
(and include the <string>
header). C++ Standard library classes are within the namespace std::
.
Alternative 1: Right Click to copy cell and Paste into Text Editor (hopefully with utf-8 support)
Alternative 2: Right click and export to CSV File
Alternative 3: Use SUBSTRING function to visualize parts of the column. Example:
SELECT SUBSTRING(fileXml,2200,200) FROM mytable WHERE id=123456
string sourceDateText = "31-08-2012";
DateTime sourceDate = DateTime.Parse(sourceDateText, "dd-MM-yyyy")
string formatted = sourceDate.ToString("yyyy-MM-dd");
I'm going to break from the herd on this one and provide an alternate point of view:
Never create classes.
Reliance on classes has a significant tendency to cause coders to create bloated and slow code. Classes getting passed around (since they're objects) take a lot more computational power than calling a function and passing a string or two. Proper naming conventions on functions can do pretty much everything creating a class can do, and with only a fraction of the overhead and better code readability.
That doesn't mean you shouldn't learn to understand classes though. If you're coding with others, people will use them all the time and you'll need to know how to juggle those classes. Writing your code to rely on functions means the code will be smaller, faster, and more readable. I've seen huge sites written using only functions that were snappy and quick, and I've seen tiny sites that had minimal functionality that relied heavily on classes and broke constantly. (When you have classes extending classes that contain classes as part of their classes, you know you've lost all semblance of easy maintainability.)
When it comes down to it, all data you're going to want to pass can easily be handled by the existing datatypes.
Classes were created as a mental crutch and provide no actual extra functionality, and the overly-complicated code they have a tendency to create defeats the point of that crutch in the long run.
Roughly:-
var accounts = new Dictionary<string, double>();
// Initialise to zero...
accounts["Fred"] = 0;
accounts["George"] = 0;
accounts["Fred"] = 0;
// Add cash.
accounts["Fred"] += 4.56;
accounts["George"] += 1.00;
accounts["Fred"] += 1.00;
Console.WriteLine("Fred owes me ${0}", accounts["Fred"]);
I got this error message in Xcode 8 while refactoring code in to a framework, it comes out that I forgot to declare the class in the framework as public
IF you want to derive usg Boolean true False need to add "[]" around value
<form [formGroup]="form">
<input type="radio" [value]=true formControlName="gender" >Male
<input type="radio" [value]=false formControlName="gender">Female
</form>
First install the JDK1.8 set to Path Open Eclipse and Oper Eclipse Market Place option. Search for jdk 1.8 for kepler Install the required plugin. Restart the eclipse. Change compiler level to 1.8 from preferences. If still there is an error then click on the file and change the compiler setting explicitly to Jdk 1.8
One way would be to look for the "ProgramFiles(x86)" environment variable:
String x86folder = Environment.GetEnvironmentVariable("ProgramFiles(x86)");
Now that the ::marker
element is available in evergreen browsers, this is how you could use it, including using :hover
to change the marker. As you can see, now you can use any Unicode character you want as a list item marker and even use custom counters.
@charset "UTF-8";
@counter-style fancy {
system: fixed;
symbols: ;
suffix: " ";
}
p {
margin-left: 8em;
}
p.note {
display: list-item;
counter-increment: note-counter;
}
p.note::marker {
content: "Note " counter(note-counter) ":";
}
ol {
margin-left: 8em;
padding-left: 0;
}
ol li {
list-style-type: lower-roman;
}
ol li::marker {
color: blue;
font-weight: bold;
}
ul {
margin-left: 8em;
padding-left: 0;
}
ul.happy li::marker {
content: "";
}
ul.happy li:hover {
color: blue;
}
ul.happy li:hover::marker {
content: "";
}
ul.fancy {
list-style: fancy;
}
_x000D_
<p>This is the first paragraph in this document.</p>
<p class="note">This is a very short document.</p>
<ol>
<li>This is the first item.
<li>This is the second item.
<li>This is the third item.
</ol>
<p>This is the end.</p>
<ul class="happy">
<li>Item 1</li>
<li>Item 2</li>
<li>Item 3</li>
</ul>
<ul class="fancy">
<li>Item 1</li>
<li>Item 2</li>
<li>Item 3</li>
</ul>
_x000D_
My Solution
public class CalendarUtils {
public static String dateFormat = "dd-MM-yyyy hh:mm";
private static SimpleDateFormat simpleDateFormat = new SimpleDateFormat(dateFormat);
public static String ConvertMilliSecondsToFormattedDate(String milliSeconds){
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(Long.parseLong(milliSeconds));
return simpleDateFormat.format(calendar.getTime());
}
}
Here's yet another way (using a negative look-ahead):
^/(?!ignoreme|ignoreme2|ignoremeN)([a-z0-9]+)$
Note: There's only one capturing expression: ([a-z0-9]+)
.
To keep the change in file but not to commit I did this
git add .
git reset -- main/dontcheckmein.txt
git commit -m "commit message"
to verify the file is excluded do
git status
This should work for you. Follow these simple steps.
First, let's remove the pip which is already installed so it won't cause any error.
Open Terminal.
Type: sudo apt-get remove python-pip
It removes pip that is already installed.
Method-1
Step: 1 sudo easy_install -U pip
It will install pip latest version.
And will return its address: Installed /usr/local/lib/python2.7/dist-packages/pip-6.1.1-py2.7.egg
or
Method-2
Step: 1 go to this link.
Step: 2 Right click >> Save as.. with name get-pip.py .
Step: 3 use: cd to go to the same directory as your get-pip.py file
Step: 4 use: sudo python get-pip.py
It will install pip latest version.
or
Method-3
Step: 1 use: sudo apt-get install python-pip
It will install pip latest version.
There are two styles to convert a collection to an array: either using a pre-sized array (like c.toArray(new String[c.size()])
) or using an empty array (like c.toArray(new String[0])
).
In older Java versions using pre-sized array was recommended, as the reflection call which is necessary to create an array of proper size was quite slow. However since late updates of OpenJDK 6 this call was intrinsified, making the performance of the empty array version the same and sometimes even better, compared to the pre-sized version. Also passing pre-sized array is dangerous for a concurrent or synchronized collection as a data race is possible between the size and toArray call which may result in extra nulls at the end of the array, if the collection was concurrently shrunk during the operation.
You can follow the uniform style: either using an empty array (which is recommended in modern Java) or using a pre-sized array (which might be faster in older Java versions or non-HotSpot based JVMs).
Making a small tweak to the inside function and using lapply on an index instead of the actual list itself gets this doing what you want
x <- c("yes", "no", "maybe", "no", "no", "yes")
y <- c("red", "blue", "green", "green", "orange")
list.xy <- list(x=x, y=y)
WORD.C <- function(WORDS){
require(wordcloud)
L2 <- lapply(WORDS, function(x) as.data.frame(table(x), stringsAsFactors = FALSE))
# Takes a dataframe and the text you want to display
FUN <- function(X, text){
windows()
wordcloud(X[, 1], X[, 2], min.freq=1)
mtext(text, 3, padj=-4.5, col="red") #what I'm trying that isn't working
}
# Now creates the sequence 1,...,length(L2)
# Loops over that and then create an anonymous function
# to send in the information you want to use.
lapply(seq_along(L2), function(i){FUN(L2[[i]], names(L2)[i])})
# Since you asked about loops
# you could use i in seq_along(L2)
# instead of 1:length(L2) if you wanted to
#for(i in 1:length(L2)){
# FUN(L2[[i]], names(L2)[i])
#}
}
WORD.C(list.xy)
I liked the way how $rootscope.emit
was used to achieve intercommunication. I suggest the clean and performance effective solution without polluting global space.
module.factory("eventBus",function (){
var obj = {};
obj.handlers = {};
obj.registerEvent = function (eventName,handler){
if(typeof this.handlers[eventName] == 'undefined'){
this.handlers[eventName] = [];
}
this.handlers[eventName].push(handler);
}
obj.fireEvent = function (eventName,objData){
if(this.handlers[eventName]){
for(var i=0;i<this.handlers[eventName].length;i++){
this.handlers[eventName][i](objData);
}
}
}
return obj;
})
//Usage:
//In controller 1 write:
eventBus.registerEvent('fakeEvent',handler)
function handler(data){
alert(data);
}
//In controller 2 write:
eventBus.fireEvent('fakeEvent','fakeData');
This will work for any date in the format YYYY-MM-DD HH:mm:ss
const moment=require("moment");
let startDate=moment("2020-09-16 08:39:27");
const endDate=moment();
const duration=moment.duration(endDate.diff(startDate))
console.log(duration.asSeconds());
console.log(duration.asHours());
As you can see in the documentation, you cannot set the visibility to false. In your case you should probably use:
scrollview.setVisibility(Visibility.GONE);
You need to use convert in order by as well:
SELECT Convert(varchar,A.InsertDate,103) as Tran_Date
order by Convert(varchar,A.InsertDate,103)
string[,] myGridData = new string[dataGridView1.Rows.Count,3];
int i = 0;
foreach(DataRow row in dataGridView1.Rows)
{
myGridData[i][0] = row.Cells[0].Value.ToString();
myGridData[i][1] = row.Cells[1].Value.ToString();
myGridData[i][2] = row.Cells[2].Value.ToString();
i++;
}
Hope this helps....
childView.bringToFront() didn't work for me, so I set the Z translation of the least recently added item (the one that was overlaying all other children) to a negative value like so:
lastView.setTranslationZ(-10);
see https://developer.android.com/reference/android/view/View.html#setTranslationZ(float) for more
Best thing is to try it for yourself.
mkdir test
cd test
git init
touch aaa.txt
git add .
git commit -a -m "New file"
mv aaa.txt bbb.txt
git add .
git status
git commit --dry-run -a
Now git status and git commit --dry-run -a shows two different results where git status shows bbb.txt as a new file/ aaa.txt is deleted, and the --dry-run commands shows the actual rename.
~/test$ git status
# On branch master
# Changes to be committed:
# (use "git reset HEAD <file>..." to unstage)
#
# new file: bbb.txt
#
# Changes not staged for commit:
# (use "git add/rm <file>..." to update what will be committed)
# (use "git checkout -- <file>..." to discard changes in working directory)
#
# deleted: aaa.txt
#
/test$ git commit --dry-run -a
# On branch master
# Changes to be committed:
# (use "git reset HEAD <file>..." to unstage)
#
# renamed: aaa.txt -> bbb.txt
#
Now go ahead and do the check-in.
git commit -a -m "Rename"
Now you can see that the file is in fact renamed, and what's shown in git status is wrong.
Moral of the story: If you're not sure whether your file got renamed, issue a "git commit --dry-run -a". If its showing that the file is renamed, you're good to go.
The question was posted long time ago, many answers pool the target periodically and produces unnecessary waste of resources if the target is unchanged. In addition, most answers do not block the program while waiting for changes as required by the original post.
We can now apply a solution that is purely event-driven.
The solution uses onClick event to deliver event triggered by value change.
The solution can be run on modern browsers that support Promise and async/await. If you are using Node.js, consider EventEmitter as a better solution.
<!-- This div is the trick. -->_x000D_
<div id="trick" onclick="onTrickClick()" />_x000D_
_x000D_
<!-- Someone else change the value you monitored. In this case, the person will click this button. -->_x000D_
<button onclick="changeValue()">Change value</button>_x000D_
_x000D_
<script>_x000D_
_x000D_
// targetObj.x is the value you want to monitor._x000D_
const targetObj = {_x000D_
_x: 0,_x000D_
get x() {_x000D_
return this._x;_x000D_
},_x000D_
set x(value) {_x000D_
this._x = value;_x000D_
// The following line tells your code targetObj.x has been changed._x000D_
document.getElementById('trick').click();_x000D_
}_x000D_
};_x000D_
_x000D_
// Someone else click the button above and change targetObj.x._x000D_
function changeValue() {_x000D_
targetObj.x = targetObj.x + 1;_x000D_
}_x000D_
_x000D_
// This is called by the trick div. We fill the details later._x000D_
let onTrickClick = function () { };_x000D_
_x000D_
// Use Promise to help you "wait". This function is called in your code._x000D_
function waitForChange() {_x000D_
return new Promise(resolve => {_x000D_
onTrickClick = function () {_x000D_
resolve();_x000D_
}_x000D_
});_x000D_
}_x000D_
_x000D_
// Your main code (must be in an async function)._x000D_
(async () => {_x000D_
while (true) { // The loop is not for pooling. It receives the change event passively._x000D_
await waitForChange(); // Wait until targetObj.x has been changed._x000D_
alert(targetObj.x); // Show the dialog only when targetObj.x is changed._x000D_
await new Promise(resolve => setTimeout(resolve, 0)); // Making the dialog to show properly. You will not need this line in your code._x000D_
}_x000D_
})();_x000D_
_x000D_
</script>
_x000D_
Follow the steps below:
See the below image:
It works in python 2.7 and 3.8:
from subprocess import Popen, PIPE
from shlex import split
proc = Popen(split('sudo -S %s' % command), bufsize=0, stdout=PIPE, stdin=PIPE, stderr=PIPE)
proc.stdin.write((password +'\n').encode()) # write as bytes
proc.stdin.flush() # need if not bufsize=0 (unbuffered stdin)
without .flush()
password will not reach sudo
if stdin buffered.
In python 2.7 Popen
by default used bufsize=0
and stdin.flush()
was not needed.
For secure using, create password file in protected directory:
mkdir --mode=700 ~/.prot_dir
nano ~/.prot_dir/passwd.txt
chmod 600 ~/.prot_dir/passwd.txt
at start your py-script read password from ~/.prot_dir/passwd.txt
with open(os.environ['HOME'] +'/.prot_dir/passwd.txt') as f:
password = f.readline().rstrip()
You can add this line to eclipse.ini
:
-vm
D:/work/Java/jdk1.6.0_13/bin/javaw.exe <-- change to your JDK actual path
-vmargs <-- needs to be after -vm <path>
But it's worth setting JAVA_HOME
and JRE_HOME
anyway because it may not work as if the path environment points to a different java version.
Because the next one to complain will be Maven, etc.
Use this to cut off the non needed characters:
String.substring(0, maxLength);
Example:
String aString ="123456789";
String cutString = aString.substring(0, 4);
// Output is: "1234"
To ensure you are not getting an IndexOutOfBoundsException when the input string is less than the expected length do the following instead:
int maxLength = (inputString.length() < MAX_CHAR)?inputString.length():MAX_CHAR;
inputString = inputString.substring(0, maxLength);
If you want your integers and doubles to have a certain length then I suggest you use NumberFormat to format your numbers instead of cutting off their string representation.
You can use not(expression)
function
not()
is a function in xpath (as opposed to an operator)
Example:
//a[not(contains(@id, 'xx'))]
OR
expression != true()
There is no built-in formula in excel, you have to add a vb script and permanently save it with your MS. Excel's installation as Add-In.
Option Explicit
Public Numbers As Variant, Tens As Variant
Sub SetNums()
Numbers = Array("", "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine", "Ten", "Eleven", "Twelve", "Thirteen", "Fourteen", "Fifteen", "Sixteen", "Seventeen", "Eighteen", "Nineteen")
Tens = Array("", "", "Twenty", "Thirty", "Forty", "Fifty", "Sixty", "Seventy", "Eighty", "Ninety")
End Sub
Function WordNum(MyNumber As Double) As String
Dim DecimalPosition As Integer, ValNo As Variant, StrNo As String
Dim NumStr As String, n As Integer, Temp1 As String, Temp2 As String
' This macro was written by Chris Mead - www.MeadInKent.co.uk
If Abs(MyNumber) > 999999999 Then
WordNum = "Value too large"
Exit Function
End If
SetNums
' String representation of amount (excl decimals)
NumStr = Right("000000000" & Trim(Str(Int(Abs(MyNumber)))), 9)
ValNo = Array(0, Val(Mid(NumStr, 1, 3)), Val(Mid(NumStr, 4, 3)), Val(Mid(NumStr, 7, 3)))
For n = 3 To 1 Step -1 'analyse the absolute number as 3 sets of 3 digits
StrNo = Format(ValNo(n), "000")
If ValNo(n) > 0 Then
Temp1 = GetTens(Val(Right(StrNo, 2)))
If Left(StrNo, 1) <> "0" Then
Temp2 = Numbers(Val(Left(StrNo, 1))) & " hundred"
If Temp1 <> "" Then Temp2 = Temp2 & " and "
Else
Temp2 = ""
End If
If n = 3 Then
If Temp2 = "" And ValNo(1) + ValNo(2) > 0 Then Temp2 = "and "
WordNum = Trim(Temp2 & Temp1)
End If
If n = 2 Then WordNum = Trim(Temp2 & Temp1 & " thousand " & WordNum)
If n = 1 Then WordNum = Trim(Temp2 & Temp1 & " million " & WordNum)
End If
Next n
NumStr = Trim(Str(Abs(MyNumber)))
' Values after the decimal place
DecimalPosition = InStr(NumStr, ".")
Numbers(0) = "Zero"
If DecimalPosition > 0 And DecimalPosition < Len(NumStr) Then
Temp1 = " point"
For n = DecimalPosition + 1 To Len(NumStr)
Temp1 = Temp1 & " " & Numbers(Val(Mid(NumStr, n, 1)))
Next n
WordNum = WordNum & Temp1
End If
If Len(WordNum) = 0 Or Left(WordNum, 2) = " p" Then
WordNum = "Zero" & WordNum
End If
End Function
Function GetTens(TensNum As Integer) As String
' Converts a number from 0 to 99 into text.
If TensNum <= 19 Then
GetTens = Numbers(TensNum)
Else
Dim MyNo As String
MyNo = Format(TensNum, "00")
GetTens = Tens(Val(Left(MyNo, 1))) & " " & Numbers(Val(Right(MyNo, 1)))
End If
End Function
After this, From File Menu select Save Book ,from next menu select "Excel 97-2003 Add-In (*.xla)
It will save as Excel Add-In. that will be available till the Ms.Office Installation to that machine.
Now Open any Excel File in any Cell type =WordNum(<your numeric value or cell reference>)
you will see a Words equivalent of the numeric value.
This Snippet of code is taken from: http://en.kioskea.net/forum/affich-267274-how-to-convert-number-into-text-in-excel
\s
matches any white-space character\S
matches any non-white-space character[^ ]
matches anything but a space character.Pick whichever is most appropriate.
Take a look at GeneratedValue
's strategy. It typically looks something like:
@GeneratedValue(strategy=GenerationType.IDENTITY)
I was having the same problem, it has a very simple solution.
Steps for executing the 'Lex' program:
Get a count of only the directories in the current directory
echo */ | wc
you will get out put like 1 309 4594
2nd digit
represents no. of directories.
or
tree -L 1 | tail -1
Consider this code,
int some_int = 100;
while(some_int == 100)
{
//your code
}
When this program gets compiled, the compiler may optimize this code, if it finds that the program never ever makes any attempt to change the value of some_int
, so it may be tempted to optimize the while
loop by changing it from while(some_int == 100)
to something which is equivalent to while(true)
so that the execution could be fast (since the condition in while
loop appears to be true
always). (if the compiler doesn't optimize it, then it has to fetch the value of some_int
and compare it with 100, in each iteration which obviously is a little bit slow.)
However, sometimes, optimization (of some parts of your program) may be undesirable, because it may be that someone else is changing the value of some_int
from outside the program which compiler is not aware of, since it can't see it; but it's how you've designed it. In that case, compiler's optimization would not produce the desired result!
So, to ensure the desired result, you need to somehow stop the compiler from optimizing the while
loop. That is where the volatile
keyword plays its role. All you need to do is this,
volatile int some_int = 100; //note the 'volatile' qualifier now!
In other words, I would explain this as follows:
volatile
tells the compiler that,
"Hey compiler, I'm volatile and, you know, I can be changed by some XYZ that you're not even aware of. That XYZ could be anything. Maybe some alien outside this planet called program. Maybe some lightning, some form of interrupt, volcanoes, etc can mutate me. Maybe. You never know who is going to change me! So O you ignorant, stop playing an all-knowing god, and don't dare touch the code where I'm present. Okay?"
Well, that is how volatile
prevents the compiler from optimizing code. Now search the web to see some sample examples.
Quoting from the C++ Standard ($7.1.5.1/8)
[..] volatile is a hint to the implementation to avoid aggressive optimization involving the object because the value of the object might be changed by means undetectable by an implementation.[...]
Related topic:
Does making a struct volatile make all its members volatile?
Just to add a very performant and handy numba alternative based on np.ndenumerate
to find the first index:
from numba import njit
import numpy as np
@njit
def index(array, item):
for idx, val in np.ndenumerate(array):
if val == item:
return idx
# If no item was found return None, other return types might be a problem due to
# numbas type inference.
This is pretty fast and deals naturally with multidimensional arrays:
>>> arr1 = np.ones((100, 100, 100))
>>> arr1[2, 2, 2] = 2
>>> index(arr1, 2)
(2, 2, 2)
>>> arr2 = np.ones(20)
>>> arr2[5] = 2
>>> index(arr2, 2)
(5,)
This can be much faster (because it's short-circuiting the operation) than any approach using np.where
or np.nonzero
.
However np.argwhere
could also deal gracefully with multidimensional arrays (you would need to manually cast it to a tuple and it's not short-circuited) but it would fail if no match is found:
>>> tuple(np.argwhere(arr1 == 2)[0])
(2, 2, 2)
>>> tuple(np.argwhere(arr2 == 2)[0])
(5,)
Use the .length
property. It is not a function.
alert($('.class').length); // alerts a nonnegative number
Just add one to the result. That turns [0, 10) into (0,10] (for integers). [0, 10) is just a more confusing way to say [0, 9], and (0,10] is [1,10] (for integers).
There is no function overloading in Python, meaning that you can't have multiple functions with the same name but different arguments.
In your code example, you're not overloading __init__()
. What happens is that the second definition rebinds the name __init__
to the new method, rendering the first method inaccessible.
As to your general question about constructors, Wikipedia is a good starting point. For Python-specific stuff, I highly recommend the Python docs.
Do you mean something like history.go(-1);
? It will go back to the previous page.
The top answer is not clear enough. here is what worked for me: The correct format should look like this if you want to point to the actual file:
<a href="./page.html">
This will have you point to that file within the same folder if you are on the page http://example.com/folder/index.html
Your best bet over here to install XAMPP..Follow the link download it , it has an instruction file as well. You can setup your own MY SQL database and then connect to on your local machine.
Try:
"TimeStamp":{$toDecimal: { $toDate:"$Datum"}}
UPDATE 23/Dec/2015: Since this answer seems to be getting a lot of upvotes, I've updated it to fix silly bugs and to generally improve the code based upon comments and feedback. See the end of the post for a list of specific improvements.
As other people have said, Cryptography is not simple so it's best to avoid "rolling your own" encryption algorithm.
You can, however, "roll your own" wrapper class around something like the built-in RijndaelManaged
cryptography class.
Rijndael is the algorithmic name of the current Advanced Encryption Standard, so you're certainly using an algorithm that could be considered "best practice".
The RijndaelManaged
class does indeed normally require you to "muck about" with byte arrays, salts, keys, initialization vectors etc. but this is precisely the kind of detail that can be somewhat abstracted away within your "wrapper" class.
The following class is one I wrote a while ago to perform exactly the kind of thing you're after, a simple single method call to allow some string-based plaintext to be encrypted with a string-based password, with the resulting encrypted string also being represented as a string. Of course, there's an equivalent method to decrypt the encrypted string with the same password.
Unlike the first version of this code, which used the exact same salt and IV values every time, this newer version will generate random salt and IV values each time. Since salt and IV must be the same between the encryption and decryption of a given string, the salt and IV is prepended to the cipher text upon encryption and extracted from it again in order to perform the decryption. The result of this is that encrypting the exact same plaintext with the exact same password gives and entirely different ciphertext result each time.
The "strength" of using this comes from using the RijndaelManaged
class to perform the encryption for you, along with using the Rfc2898DeriveBytes function of the System.Security.Cryptography
namespace which will generate your encryption key using a standard and secure algorithm (specifically, PBKDF2) based upon the string-based password you supply. (Note this is an improvement of the first version's use of the older PBKDF1 algorithm).
Finally, it's important to note that this is still unauthenticated encryption. Encryption alone provides only privacy (i.e. message is unknown to 3rd parties), whilst authenticated encryption aims to provide both privacy and authenticity (i.e. recipient knows message was sent by the sender).
Without knowing your exact requirements, it's difficult to say whether the code here is sufficiently secure for your needs, however, it has been produced to deliver a good balance between relative simplicity of implementation vs "quality". For example, if your "receiver" of an encrypted string is receiving the string directly from a trusted "sender", then authentication may not even be necessary.
If you require something more complex, and which offers authenticated encryption, check out this post for an implementation.
Here's the code:
using System;
using System.Text;
using System.Security.Cryptography;
using System.IO;
using System.Linq;
namespace EncryptStringSample
{
public static class StringCipher
{
// This constant is used to determine the keysize of the encryption algorithm in bits.
// We divide this by 8 within the code below to get the equivalent number of bytes.
private const int Keysize = 256;
// This constant determines the number of iterations for the password bytes generation function.
private const int DerivationIterations = 1000;
public static string Encrypt(string plainText, string passPhrase)
{
// Salt and IV is randomly generated each time, but is preprended to encrypted cipher text
// so that the same Salt and IV values can be used when decrypting.
var saltStringBytes = Generate256BitsOfRandomEntropy();
var ivStringBytes = Generate256BitsOfRandomEntropy();
var plainTextBytes = Encoding.UTF8.GetBytes(plainText);
using (var password = new Rfc2898DeriveBytes(passPhrase, saltStringBytes, DerivationIterations))
{
var keyBytes = password.GetBytes(Keysize / 8);
using (var symmetricKey = new RijndaelManaged())
{
symmetricKey.BlockSize = 256;
symmetricKey.Mode = CipherMode.CBC;
symmetricKey.Padding = PaddingMode.PKCS7;
using (var encryptor = symmetricKey.CreateEncryptor(keyBytes, ivStringBytes))
{
using (var memoryStream = new MemoryStream())
{
using (var cryptoStream = new CryptoStream(memoryStream, encryptor, CryptoStreamMode.Write))
{
cryptoStream.Write(plainTextBytes, 0, plainTextBytes.Length);
cryptoStream.FlushFinalBlock();
// Create the final bytes as a concatenation of the random salt bytes, the random iv bytes and the cipher bytes.
var cipherTextBytes = saltStringBytes;
cipherTextBytes = cipherTextBytes.Concat(ivStringBytes).ToArray();
cipherTextBytes = cipherTextBytes.Concat(memoryStream.ToArray()).ToArray();
memoryStream.Close();
cryptoStream.Close();
return Convert.ToBase64String(cipherTextBytes);
}
}
}
}
}
}
public static string Decrypt(string cipherText, string passPhrase)
{
// Get the complete stream of bytes that represent:
// [32 bytes of Salt] + [32 bytes of IV] + [n bytes of CipherText]
var cipherTextBytesWithSaltAndIv = Convert.FromBase64String(cipherText);
// Get the saltbytes by extracting the first 32 bytes from the supplied cipherText bytes.
var saltStringBytes = cipherTextBytesWithSaltAndIv.Take(Keysize / 8).ToArray();
// Get the IV bytes by extracting the next 32 bytes from the supplied cipherText bytes.
var ivStringBytes = cipherTextBytesWithSaltAndIv.Skip(Keysize / 8).Take(Keysize / 8).ToArray();
// Get the actual cipher text bytes by removing the first 64 bytes from the cipherText string.
var cipherTextBytes = cipherTextBytesWithSaltAndIv.Skip((Keysize / 8) * 2).Take(cipherTextBytesWithSaltAndIv.Length - ((Keysize / 8) * 2)).ToArray();
using (var password = new Rfc2898DeriveBytes(passPhrase, saltStringBytes, DerivationIterations))
{
var keyBytes = password.GetBytes(Keysize / 8);
using (var symmetricKey = new RijndaelManaged())
{
symmetricKey.BlockSize = 256;
symmetricKey.Mode = CipherMode.CBC;
symmetricKey.Padding = PaddingMode.PKCS7;
using (var decryptor = symmetricKey.CreateDecryptor(keyBytes, ivStringBytes))
{
using (var memoryStream = new MemoryStream(cipherTextBytes))
{
using (var cryptoStream = new CryptoStream(memoryStream, decryptor, CryptoStreamMode.Read))
{
var plainTextBytes = new byte[cipherTextBytes.Length];
var decryptedByteCount = cryptoStream.Read(plainTextBytes, 0, plainTextBytes.Length);
memoryStream.Close();
cryptoStream.Close();
return Encoding.UTF8.GetString(plainTextBytes, 0, decryptedByteCount);
}
}
}
}
}
}
private static byte[] Generate256BitsOfRandomEntropy()
{
var randomBytes = new byte[32]; // 32 Bytes will give us 256 bits.
using (var rngCsp = new RNGCryptoServiceProvider())
{
// Fill the array with cryptographically secure random bytes.
rngCsp.GetBytes(randomBytes);
}
return randomBytes;
}
}
}
The above class can be used quite simply with code similar to the following:
using System;
namespace EncryptStringSample
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine("Please enter a password to use:");
string password = Console.ReadLine();
Console.WriteLine("Please enter a string to encrypt:");
string plaintext = Console.ReadLine();
Console.WriteLine("");
Console.WriteLine("Your encrypted string is:");
string encryptedstring = StringCipher.Encrypt(plaintext, password);
Console.WriteLine(encryptedstring);
Console.WriteLine("");
Console.WriteLine("Your decrypted string is:");
string decryptedstring = StringCipher.Decrypt(encryptedstring, password);
Console.WriteLine(decryptedstring);
Console.WriteLine("");
Console.WriteLine("Press any key to exit...");
Console.ReadLine();
}
}
}
(You can download a simple VS2013 sample solution (which includes a few unit tests) here).
UPDATE 23/Dec/2015: The list of specific improvements to the code are:
If you can encode the tar file by Base64 (and storing it in a plain text file) you can use
File.open("my_tar.txt").each {|line| puts line}
or
File.new("name_file.txt", "r").each {|line| puts line}
to print each (text) line in the cmd.
Summary:
You search your file full path in history of deleted files git log --diff-filter=D --summary | grep filename
You restore your file from commit before it was deleted
restore () {
filepath="$@"
last_commit=$(git log --all --full-history -- $filepath | grep commit | head -1 | awk '{print $2; exit}')
echo "Restoring file from commit before $last_commit"
git checkout $last_commit^ -- $filepath
}
restore my/file_path
I was surprised that no one had yet recommended using the builtin filter function.
import operator
import string # only for the example you could use a custom string
s = "1212edjaq"
Say we want to filter out everything that isn't a number. Using the filter builtin method "...is equivalent to the generator expression (item for item in iterable if function(item))" [Python 3 Builtins: Filter]
sList = list(s)
intsList = list(string.digits)
obj = filter(lambda x: operator.contains(intsList, x), sList)))
In Python 3 this returns
>> <filter object @ hex>
To get a printed string,
nums = "".join(list(obj))
print(nums)
>> "1212"
I am not sure how filter ranks in terms of efficiency but it is a good thing to know how to use when doing list comprehensions and such.
UPDATE
Logically, since filter works you could also use list comprehension and from what I have read it is supposed to be more efficient because lambdas are the wall street hedge fund managers of the programming function world. Another plus is that it is a one-liner that doesnt require any imports. For example, using the same string 's' defined above,
num = "".join([i for i in s if i.isdigit()])
That's it. The return will be a string of all the characters that are digits in the original string.
If you have a specific list of acceptable/unacceptable characters you need only adjust the 'if' part of the list comprehension.
target_chars = "".join([i for i in s if i in some_list])
or alternatively,
target_chars = "".join([i for i in s if i not in some_list])
One Year later, let's test mkoistinen's answer with python 3.4.3:
Nothing changed. Join is still the fastest method. With intp being arguably the best choice in terms of readability you might want to use intp nevertheless.
I had the same problem.please do the following it may help you: By Default List View Threshold set at only 5,000 items this is because of Sharepoint server performance.
To Change the LVT:
Click OK to save it.
SELECT COUNT(*), table1.category_id, table2.category_name
FROM table1
INNER JOIN table2 ON table1.category_id=table2.category_id
WHERE table1.colour <> 'red'
GROUP BY table1.category_id, table2.category_name
To populate ComboBox with JSON, you can consider using the: jqwidgets combobox, too.
i faced this issue where i was using SQL it is different from MYSQL the solution was puting in this format: =date('m-d-y h:m:s'); rather than =date('y-m-d h:m:s');
Replace the default Up-arrow with your own drawable
getSupportActionBar().setHomeAsUpIndicator(R.drawable.hamburger);
In Log4j 2, you can use Logger.catching() to log a stacktrace from an exception that was caught.
try {
String msg = messages[messages.length];
logger.error("An exception should have been thrown");
} catch (Exception ex) {
logger.catching(ex);
}
If you want to display more column values without an aggregation function use GROUPING SETS
instead of ROLLUP
:
SELECT
Type = ISNULL(Type, 'Total'),
SomeIntColumn = ISNULL(SomeIntColumn, 0),
TotalSales = SUM(TotalSales)
FROM atable
GROUP BY GROUPING SETS ((Type, SomeIntColumn ), ())
ORDER BY SomeIntColumn --Displays summary row as the first row in query result
Sometimes it's asking the question that makes the answer jump out. The methods and extra arguments are listed on the ggplot2 wiki stat_smooth page.
Which is alluded to on the geom_smooth()
page with:
"See stat_smooth for examples of using built in model fitting if you need some more flexible, this example shows you how to plot the fits from any model of your choosing".
It's not the first time I've seen arguments in examples for ggplot graphs that aren't specifically in the function. It does make it tough to work out the scope of each function, or maybe I am yet to stumble upon a magic explicit list that says what will and will not work within each function.
Other options:
#multi line string
multiline_string = <<EOM
This is a very long string
that contains interpolation
like #{4 + 5} \n\n
EOM
puts multiline_string
#another option for multiline string
message = <<-EOF
asdfasdfsador #{2+2} this month.
asdfadsfasdfadsfad.
EOF
puts message
The best way to find the key for a particular value is to use key method that is available for a hash....
gender = {"MALE" => 1, "FEMALE" => 2}
gender.key(1) #=> MALE
I hope it solves your problem...
- (void)moveToPage {
NSUInteger pageIndex = ((ContentViewController *) [self.pageViewController.viewControllers objectAtIndex:0]).pageIndex;
pageIndex++;
ContentViewController *viewController = [self viewControllerAtIndex:pageIndex];
if (viewController == nil) {
return;
}
[self.pageViewController setViewControllers:@[viewController] direction:UIPageViewControllerNavigationDirectionForward animated:YES completion:nil];
}
//now call this method
[self moveToPage];
I hope it works :)
Permanent:
UPDATE
MyTable
SET
MyColumn = UPPER(MyColumn)
Temporary:
SELECT
UPPER(MyColumn) AS MyColumn
FROM
MyTable
I think buffers are e.g. useful when interfacing python to native libraries. (Guido van Rossum explains buffer
in this mailinglist post).
For example, numpy seems to use buffer for efficient data storage:
import numpy
a = numpy.ndarray(1000000)
the a.data
is a:
<read-write buffer for 0x1d7b410, size 8000000, offset 0 at 0x1e353b0>
You should use finish()
when the user clicks on the button in order to go to the previous activity.
Button backButton = (Button)this.findViewById(R.id.back);
backButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
finish();
}
});
Alternatively, if you really need to, you can try to trigger your own back key press:
this.dispatchKeyEvent(new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_BACK));
this.dispatchKeyEvent(new KeyEvent(KeyEvent.ACTION_UP, KeyEvent.KEYCODE_BACK));
Execute both of these.
Use the return keyword to exit from a method.
public void someMethod() {
//... a bunch of code ...
if (someCondition()) {
return;
}
//... otherwise do the following...
}
Pls note: We may use break statements which are used to break/exit only from a loop, and not the entire program.
To exit from program: System.exit() Method:
System.exit
has status code, which tells about the termination, such as:
exit(0) : Indicates successful termination.
exit(1) or exit(-1) or any non-zero value – indicates unsuccessful termination.
Using the visibility
property only affects the visibility of the elements on the page; they will still be there in the page layout. To completely remove the elements from the page, use the display
property.
display:none // for hiding
display:block // for showing
Make sure to change your css file to use display instead of visibility too.
As for the javascript (this is not jQuery), make sure you hide the options by default when the page loads:
<script type="text/javascript">
window.onload = function() {
document.getElementById('ifYes').style.display = 'none';
}
function yesnoCheck() {
if (document.getElementById('yesCheck').checked) {
document.getElementById('ifYes').style.display = 'block';
}
else {
document.getElementById('ifYes').style.display = 'none';
}
}
</script>
If you haven't done so already, I would recommend taking a look at jQuery. jQuery code is much clearer and easier to write and understand.
This makes sure you are getting the latest version from of the css or js file from the server.
And later you can append "?v=2"
if you have a newer version and "?v=3", "?v=4"
and so on.
Note that you can use any querystring
, 'v' is not a must for example:
"?blah=1
" will work as well.
And
"?xyz=1002"
will work.
And this is a common technique because browsers are now caching js and css files better and longer.
Today March 6, 2013, Microsoft released SQL Server Data Tools – Business Intelligence for Visual Studio 2012 (SSDT BI) templates. With SSDT BI for Visual Studio 2012 you can develop and deploy SQL Server Business intelligence projects. Projects created in Visual Studio 2010 can be opened in Visual Studio 2012 and the other way around without upgrading or downgrading – it just works.
The download/install is named to ensure you get the SSDT templates that contain the Business Intelligence projects. The setup for these tools is now available from the web and can be downloaded in multiple languages right here: http://www.microsoft.com/download/details.aspx?id=36843
Assuming you are decoding or encoding xml and using JAXB
, then it's possible to replace the dateTime binding entirely and use something else than `XMLGregorianCalendar' for every date in the schema.
In that way you can have JAXB
do the repetitive stuff while you can spend the time on writing awesome code that delivers value.
Example for a jodatime DateTime
: (Doing this with java.util.Date would also work - but with certain limitations. I prefer jodatime and it's copied from my code so I know it works...)
<jxb:globalBindings>
<jxb:javaType name="org.joda.time.LocalDateTime" xmlType="xs:dateTime"
parseMethod="test.util.JaxbConverter.parseDateTime"
printMethod="se.seb.bis.test.util.JaxbConverter.printDateTime" />
<jxb:javaType name="org.joda.time.LocalDate" xmlType="xs:date"
parseMethod="test.util.JaxbConverter.parseDate"
printMethod="test.util.JaxbConverter.printDate" />
<jxb:javaType name="org.joda.time.LocalTime" xmlType="xs:time"
parseMethod="test.util.JaxbConverter.parseTime"
printMethod="test.util.JaxbConverter.printTime" />
<jxb:serializable uid="2" />
</jxb:globalBindings>
And the converter:
public class JaxbConverter {
static final DateTimeFormatter dtf = ISODateTimeFormat.dateTimeNoMillis();
static final DateTimeFormatter df = ISODateTimeFormat.date();
static final DateTimeFormatter tf = ISODateTimeFormat.time();
public static LocalDateTime parseDateTime(String s) {
try {
if (StringUtils.trimToEmpty(s).isEmpty())
return null;
LocalDateTime r = dtf.parseLocalDateTime(s);
return r;
} catch (Exception e) {
throw new IllegalArgumentException(e);
}
}
public static String printDateTime(LocalDateTime d) {
try {
if (d == null)
return null;
return dtf.print(d);
} catch (Exception e) {
throw new IllegalArgumentException(e);
}
}
public static LocalDate parseDate(String s) {
try {
if (StringUtils.trimToEmpty(s).isEmpty())
return null;
return df.parseLocalDate(s);
} catch (Exception e) {
throw new IllegalArgumentException(e);
}
}
public static String printDate(LocalDate d) {
try {
if (d == null)
return null;
return df.print(d);
} catch (Exception e) {
throw new IllegalArgumentException(e);
}
}
public static String printTime(LocalTime d) {
try {
if (d == null)
return null;
return tf.print(d);
} catch (Exception e) {
throw new IllegalArgumentException(e);
}
}
public static LocalTime parseTime(String s) {
try {
if (StringUtils.trimToEmpty(s).isEmpty())
return null;
return df.parseLocalTime(s);
} catch (Exception e) {
throw new IllegalArgumentException(e);
}
}
See here: how replace XmlGregorianCalendar by Date?
If you are happy to just map to an instant based on the timezone+timestamp, and the original timezone is not really relevant, then java.util.Date
is probably fine too.
You need to install the provisioning profile (drag and drop it into iTunes). Then drag and drop the .ipa. Ensure you device is set to sync apps, and try again.
Based on 'Google JavaScript Style Guide'
File names must be all lowercase and may include underscores (_) or dashes (-), but no additional punctuation. Follow the convention that your project uses. Filenames’ extension must be .js.
I was getting the same issue with a different application,
Faulting application name: javaw.exe, version: 8.0.51.16, time stamp: 0x55763d32
Faulting module name: mscorwks.dll, version: 2.0.50727.5485, time stamp: 0x53a11d6c
Exception code: 0xc0000005
Fault offset: 0x0000000000501090
Faulting process id: 0x2960
Faulting application start time: 0x01d0c39a93c695f2
Faulting application path: C:\Program Files\Java\jre1.8.0_51\bin\javaw.exe
Faulting module path:C:\Windows\Microsoft.NET\Framework64\v2.0.50727\mscorwks.dll
I was using the The Enhanced Mitigation Experience Toolkit (EMET) from Microsoft and I found by disabling the EMET features on javaw.exe in my case as this was the faulting application, it enabled my application to run successfully. Make sure you don't have any similar software with security protections on memory.
This may help a small percentage of people still scratching their heads. Text copied from clipboard into VSCode may have an invisible hard space character preventing wrapping. Check it with HTML inspector
Just delete the whole directory. This will delete all the projects but also the Eclipse cache and settings for the workspace. These are kept in the .metadata
folder of an Eclipse workspace. Note that you can configure Eclipse to use project folders that are outside the workspace folder as well, so you may want to verify the location of each of the projects.
You can remove the workspace from the suggested workspaces by going into the General/Startup and Shutdown/Workspaces section of the preferences (via Preferences > General > Startup & Shudown > Workspaces > [Remove] ). Note that this does not remove the files itself. For old versions of Eclipse you will need to edit the org.eclipse.ui.ide.prefs
file in the configuration/.settings
directory under your installation directory (or in ~/.eclipse
on Unix, IIRC).
My answer won't probably be useful to the writer of this question (I am 8 months late so not the right timing I guess) but I think it will probably be useful for many other developers that might come across this answer.
Today, I just released (in the name of my company) an HTML to POJO complete framework that you can use to map HTML to any POJO class with simply some annotations. The library itself is quite handy and features many other things all the while being very pluggable. You can have a look to it right here : https://github.com/whimtrip/jwht-htmltopojo
Imagine we need to parse the following html page :
<html>
<head>
<title>A Simple HTML Document</title>
</head>
<body>
<div class="restaurant">
<h1>A la bonne Franquette</h1>
<p>French cuisine restaurant for gourmet of fellow french people</p>
<div class="location">
<p>in <span>London</span></p>
</div>
<p>Restaurant n*18,190. Ranked 113 out of 1,550 restaurants</p>
<div class="meals">
<div class="meal">
<p>Veal Cutlet</p>
<p rating-color="green">4.5/5 stars</p>
<p>Chef Mr. Frenchie</p>
</div>
<div class="meal">
<p>Ratatouille</p>
<p rating-color="orange">3.6/5 stars</p>
<p>Chef Mr. Frenchie and Mme. French-Cuisine</p>
</div>
</div>
</div>
</body>
</html>
Let's create the POJOs we want to map it to :
public class Restaurant {
@Selector( value = "div.restaurant > h1")
private String name;
@Selector( value = "div.restaurant > p:nth-child(2)")
private String description;
@Selector( value = "div.restaurant > div:nth-child(3) > p > span")
private String location;
@Selector(
value = "div.restaurant > p:nth-child(4)"
format = "^Restaurant n\*([0-9,]+). Ranked ([0-9,]+) out of ([0-9,]+) restaurants$",
indexForRegexPattern = 1,
useDeserializer = true,
deserializer = ReplacerDeserializer.class,
preConvert = true,
postConvert = false
)
// so that the number becomes a valid number as they are shown in this format : 18,190
@ReplaceWith(value = ",", with = "")
private Long id;
@Selector(
value = "div.restaurant > p:nth-child(4)"
format = "^Restaurant n\*([0-9,]+). Ranked ([0-9,]+) out of ([0-9,]+) restaurants$",
// This time, we want the second regex group and not the first one anymore
indexForRegexPattern = 2,
useDeserializer = true,
deserializer = ReplacerDeserializer.class,
preConvert = true,
postConvert = false
)
// so that the number becomes a valid number as they are shown in this format : 18,190
@ReplaceWith(value = ",", with = "")
private Integer rank;
@Selector(value = ".meal")
private List<Meal> meals;
// getters and setters
}
And now the Meal
class as well :
public class Meal {
@Selector(value = "p:nth-child(1)")
private String name;
@Selector(
value = "p:nth-child(2)",
format = "^([0-9.]+)\/5 stars$",
indexForRegexPattern = 1
)
private Float stars;
@Selector(
value = "p:nth-child(2)",
// rating-color custom attribute can be used as well
attr = "rating-color"
)
private String ratingColor;
@Selector(
value = "p:nth-child(3)"
)
private String chefs;
// getters and setters.
}
We provided some more explanations on the above code on our github page.
For the moment, let's see how to scrap this.
private static final String MY_HTML_FILE = "my-html-file.html";
public static void main(String[] args) {
HtmlToPojoEngine htmlToPojoEngine = HtmlToPojoEngine.create();
HtmlAdapter<Restaurant> adapter = htmlToPojoEngine.adapter(Restaurant.class);
// If they were several restaurants in the same page,
// you would need to create a parent POJO containing
// a list of Restaurants as shown with the meals here
Restaurant restaurant = adapter.fromHtml(getHtmlBody());
// That's it, do some magic now!
}
private static String getHtmlBody() throws IOException {
byte[] encoded = Files.readAllBytes(Paths.get(MY_HTML_FILE));
return new String(encoded, Charset.forName("UTF-8"));
}
Another short example can be found here
Hope this will help someone out there!
It's straight forward to use fork/execl to run cp to do the work for you. This has advantages over system in that it is not prone to a Bobby Tables attack and you don't need to sanitize the arguments to the same degree. Further, since system() requires you to cobble together the command argument, you are not likely to have a buffer overflow issue due to sloppy sprintf() checking.
The advantage to calling cp directly instead of writing it is not having to worry about elements of the target path existing in the destination. Doing that in roll-you-own code is error-prone and tedious.
I wrote this example in ANSI C and only stubbed out the barest error handling, other than that it's straight forward code.
void copy(char *source, char *dest)
{
int childExitStatus;
pid_t pid;
int status;
if (!source || !dest) {
/* handle as you wish */
}
pid = fork();
if (pid == 0) { /* child */
execl("/bin/cp", "/bin/cp", source, dest, (char *)0);
}
else if (pid < 0) {
/* error - couldn't start process - you decide how to handle */
}
else {
/* parent - wait for child - this has all error handling, you
* could just call wait() as long as you are only expecting to
* have one child process at a time.
*/
pid_t ws = waitpid( pid, &childExitStatus, WNOHANG);
if (ws == -1)
{ /* error - handle as you wish */
}
if( WIFEXITED(childExitStatus)) /* exit code in childExitStatus */
{
status = WEXITSTATUS(childExitStatus); /* zero is normal exit */
/* handle non-zero as you wish */
}
else if (WIFSIGNALED(childExitStatus)) /* killed */
{
}
else if (WIFSTOPPED(childExitStatus)) /* stopped */
{
}
}
}
An Observable is an object that emits a stream of events: Next, Error and Completed.
When your function returns an Observable, it is not returning a stream, but an instance of Observable. The flatMap
operator simply maps that instance to a stream.
That is the behaviour of flatMap
when compared to map
: Execute the given function and flatten the resulting object into a stream.
You must know the source encoding.
string someText = "The quick brown fox jumps over the lazy dog.";
byte[] bytes = Encoding.Unicode.GetBytes(someText);
char[] chars = Encoding.Unicode.GetChars(bytes);
To get rid of the outline when clicking, add outline:none
button {
background-color: Transparent;
background-repeat:no-repeat;
border: none;
cursor:pointer;
overflow: hidden;
outline:none;
}
button {_x000D_
background-color: Transparent;_x000D_
background-repeat:no-repeat;_x000D_
border: none;_x000D_
cursor:pointer;_x000D_
overflow: hidden;_x000D_
outline:none;_x000D_
}
_x000D_
<button>button</button>
_x000D_
I think the easiest way would be
var items = $('img, style, ...'), itemslen = items.length;
items.bind('load', function(){
itemslen--;
if (!itemlen) // Do stuff here
});
EDIT, to be a little crazy:
var items = $('a, abbr, acronym, address, applet, area, audio, b, base, ' +
'basefont, bdo, bgsound, big, body, blockquote, br, button, canvas, ' +
'caption, center, cite, code, col, colgroup, comment, custom, dd, del, ' +
'dfn, dir, div, dl, document, dt, em, embed, fieldset, font, form, frame, ' +
'frameset, head, hn, hr, html, i, iframe, img, input, ins, isindex, kbd, ' +
'label, legend, li, link, listing, map, marquee, media, menu, meta, ' +
'nextid, nobr, noframes, noscript, object, ol, optgroup, option, p, ' +
'param, plaintext, pre, q, rt, ruby, s, samp, script, select, small, ' +
'source, span, strike, strong, style, sub, sup, table, tbody, td, ' +
'textarea, tfoot, th, thead, title, tr, tt, u, ul, var, wbr, video, ' +
'window, xmp'), itemslen = items.length;
items.bind('load', function(){
itemslen--;
if (!itemlen) // Do stuff here
});
Late simple example:
from os import path, getcwd, chdir
def print_my_path():
print('cwd: {}'.format(getcwd()))
print('__file__:{}'.format(__file__))
print('abspath: {}'.format(path.abspath(__file__)))
print_my_path()
chdir('..')
print_my_path()
Under Python-2.*, the second call incorrectly determines the path.abspath(__file__)
based on the current directory:
cwd: C:\codes\py
__file__:cwd_mayhem.py
abspath: C:\codes\py\cwd_mayhem.py
cwd: C:\codes
__file__:cwd_mayhem.py
abspath: C:\codes\cwd_mayhem.py
As noted by @techtonik, in Python 3.4+, this will work fine since __file__
returns an absolute path.
for a relative answer, use .
test with:
$ myDir=.
$ ls $myDir
$ cd /
$ ls $myDir
The first ls
will show you everything in the current directory, the second will show you everything in the root directory (/
).
It took me some time to figure out the whole picture and I'd like to share here.
Visual Studio has two approaches to use package restore: Automatic Package Restore and MSBuild-Integrated package restore. The 'MSBuild-Integrated Package Restore' restores packages DURING the building process that might cause issues in some scenarios. The 'Automatic Package Restore' is the recommended approach by the NuGet team.
There are several steps to to make 'Automatic Package Restore' work:
In Visual Studio, Tools -> Extensions and Updates, Upgrade NuGet if there is a newer version (Version 2.7 or later)
If you use TFS, in your solution's .nuget folder, remove the NuGet.exe and NuGet.targes files. Then edit NuGet.Config to not check in NuGet packages:
<configuration>
<solution>
<add key="disableSourceControlIntegration" value="true" />
</solution>
</configuration>
If you checked in the solution's packages folder to TFS before, delete the folder and check in the deletion of package folder deletion.
If you don't use TFS, delete the .nuget folder.
In each project file (.csproj or .vbproj) in your solution, remove the line that references NuGet.targets file. The reference looks like this:
<Import Project="$(SolutionDir)\.nuget\NuGet.targets" Condition="Exists('$(SolutionDir)\.nuget\NuGet.targets')" />
Remove this line in every project file in your solution.
In Visual Studio menu, either through
Tools -> Options -> Package Manager -> General or Tools -> NuGet Package Manager -> Package Manager Settings
please enable the following two options 1) 'Allow NuGet to download missing packages' 2) 'Automatically check for missing packages during build in Visual Studio'
Test your package restore configuration by the following steps
The values you provided are UTF-8 values. When set, the array of:
declare -a ARR=(0xA7 0x9B 0x46 0x8D 0x1E 0x52 0xA7 0x9B 0x7B 0x31 0xD2)
Will be parsed to print the plaintext characters of each value.
for ((n=0; n < ${#ARR[*]}; n++)); do echo -e "\u${ARR[$n]//0x/}"; done
And the output will yield a few printable characters and some non-printable characters as shown here:
For converting hex values to plaintext using the echo
command:
echo -e "\x<hex value here>"
And for converting UTF-8 values to plaintext using the echo
command:
echo -e "\u<UTF-8 value here>"
And then for converting octal to plaintext using the echo
command:
echo -e "\0<octal value here>"
When you have encoding values you aren't familiar with, take the time to check out the ranges in the common encoding schemes to determine what encoding a value belongs to. Then conversion from there is a snap.
I was having difficulty getting the answer by @fernando-aguirre using WindowChrome
to work. It was not working in my case because I was overriding OnSourceInitialized
in the MainWindow
and not calling the base class method.
protected override void OnSourceInitialized(EventArgs e)
{
ViewModel.Initialize(this);
base.OnSourceInitialized(e); // <== Need to call this!
}
This stumped me for a very long time.
.toggleClass()
will not animate, you should go for slideToggle()
or .animate()
method.
Try itext
. Add dependency to your build.gradle
for latest as of this post
Note: special version for android, trailing "g":
dependencies {
compile 'com.itextpdf:itextg:5.5.9'
}
FYI, the reason why RaphaelJS doesn't work on android is that android webkit (unlike iPhone webkit) doesn't support SVG at this time. Google has only recently come to the conclusion that SVG support an android is a good idea, so it won't be available yet for some time.
The other answers explain how to produce a string formatted like in your example, but if all you need to do is to print
that stuff you could simply write:
first = 10
second = 20
print "First number is", first, "and second number is", second
If you have many cases and do not want to write a ton of strcmp()
calls, you could do something like:
switch(my_hash_function(the_string)) {
case HASH_B1: ...
/* ...etc... */
}
You just have to make sure your hash function has no collisions inside the set of possible values for the string.
This code simply worked for me
System.setProperty("webdriver.firefox.bin", "C:\\Program Files\\Mozilla Firefox 54\\firefox.exe");
String Firefoxdriverpath = "C:\\Users\\Hp\\Downloads\\geckodriver-v0.18.0-win64\\geckodriver.exe";
System.setProperty("webdriver.gecko.driver", Firefoxdriverpath);
DesiredCapabilities capabilities = DesiredCapabilities.firefox();
capabilities.setCapability("marionette", true);
driver = new FirefoxDriver(capabilities);
Send a POST request with content type = 'form-data':
import requests
files = {
'username': (None, 'myusername'),
'password': (None, 'mypassword'),
}
response = requests.post('https://example.com/abc', files=files)
My grep that works after trying out stuff in this thread:
echo "hi how are you " | grep -shoP ".*? "
Just make sure you append a space to each one of your lines
(Mine was a line by line search to spit out words)
In this case you could use something like this:
User::where('this', '=', 1)
->whereNotNull('created_at')
->whereNotNull('updated_at')
->where(function($query){
return $query
->whereNull('alias')
->orWhere('alias', '=', 'admin');
});
It should supply you with a query like:
SELECT * FROM `user`
WHERE `user`.`this` = 1
AND `user`.`created_at` IS NOT NULL
AND `user`.`updated_at` IS NOT NULL
AND (`alias` IS NULL OR `alias` = 'admin')
You could use "child process" module of nodejs to execute any shell commands or scripts with in nodejs. Let me show you with an example, I am running a shell script(hi.sh) with in nodejs.
hi.sh
echo "Hi There!"
node_program.js
const { exec } = require('child_process');
var yourscript = exec('sh hi.sh',
(error, stdout, stderr) => {
console.log(stdout);
console.log(stderr);
if (error !== null) {
console.log(`exec error: ${error}`);
}
});
Here, when I run the nodejs file, it will execute the shell file and the output would be:
Run
node node_program.js
output
Hi There!
You can execute any script just by mentioning the shell command or shell script in exec
callback.
Hope this helps! Happy coding :)
I was having the same trouble, the problem for me was that adb was not in the right environment path, the error is telling you metro port, while you're in the adb, ports are killed and restarted.
Note: Or depending where is located adb.exe in your machine
Run android build again
$ react-native run-android
Or
$ react-native start
$ react-native run-android
You need to use ContextCompat.getColor(), which is part of the Support V4 Library (so it will work for all the previous API).
ContextCompat.getColor(context, R.color.my_color)
As specified in the documentation, "Starting in M, the returned color will be styled for the specified Context's theme". SO no need to worry about it.
You can add the Support V4 library by adding the following to the dependencies array inside your app build.gradle:
compile 'com.android.support:support-v4:23.0.1'
Never fails, once I post the question to SO, I get some enlightening "aha" moment and figure it out. The solution:
.container {_x000D_
border: 1px solid #DDDDDD;_x000D_
width: 200px;_x000D_
height: 200px;_x000D_
position: relative;_x000D_
}_x000D_
.tag {_x000D_
float: left;_x000D_
position: absolute;_x000D_
left: 0px;_x000D_
top: 0px;_x000D_
z-index: 1000;_x000D_
background-color: #92AD40;_x000D_
padding: 5px;_x000D_
color: #FFFFFF;_x000D_
font-weight: bold;_x000D_
}
_x000D_
<div class="container">_x000D_
<div class="tag">Featured</div>_x000D_
<img src="http://www.placehold.it/200x200">_x000D_
</div>
_x000D_
The key is the container has to be positioned relative and the tag positioned absolute.
The package fBasics
has a function colStdevs
require('fBasics')
set.seed(123)
colStdevs(matrix(rnorm(1000, mean=10, sd=1), ncol=5))
[1] 0.9431599 0.9959210 0.9648052 1.0246366 1.0351268
Try -
Call CatSubProduktAreakum(Stattyp, Daty + UBound(SubCategories) + 2)
As for the reason, this from MSDN via this question - What does the Call keyword do in VB6?
You are not required to use the Call keyword when calling a procedure. However, if you use the Call keyword to call a procedure that requires arguments, argumentlist must be enclosed in parentheses. If you omit the Call keyword, you also must omit the parentheses around argumentlist. If you use either Call syntax to call any intrinsic or user-defined function, the function's return value is discarded.
Use .apply()
to have the same access to arguments
in function b
, like this:
function a(){
b.apply(null, arguments);
}
function b(){
alert(arguments); //arguments[0] = 1, etc
}
a(1,2,3);?
I define a category that lets me filter using a block, like this:
@implementation NSMutableArray (Filtering)
- (void)filterUsingTest:(BOOL (^)(id obj, NSUInteger idx))predicate {
NSMutableIndexSet *indexesFailingTest = [[NSMutableIndexSet alloc] init];
NSUInteger index = 0;
for (id object in self) {
if (!predicate(object, index)) {
[indexesFailingTest addIndex:index];
}
++index;
}
[self removeObjectsAtIndexes:indexesFailingTest];
[indexesFailingTest release];
}
@end
which can then be used like this:
[myMutableArray filterUsingTest:^BOOL(id obj, NSUInteger idx) {
return [self doIWantToKeepThisObject:obj atIndex:idx];
}];
I like the chosen answer. However, it tends to be slower than awk since 2 tools are needed to do the job.
$ wc -l file
49999998 file
$ time paste -sd+ file | bc
1448700364
real 1m36.960s
user 1m24.515s
sys 0m1.772s
$ time awk '{s+=$1}END{print s}' file
1448700364
real 0m45.476s
user 0m40.756s
sys 0m0.287s
In query, CONCAT_WS()
function.
This function not only add multiple string values and makes them a single string value. It also let you define separator ( ” “, ” , “, ” – “,” _ “, etc.).
Syntax –
CONCAT_WS( SEPERATOR, column1, column2, ... )
Example
SELECT
topic,
CONCAT_WS( " ", subject, year ) AS subject_year
FROM table
I am posting this answer to provide a script with explanations that covers three different scenarios of creating a local repo that has a local remote. You can run the entire script and it will create the test repos in your home folder (tested on windows git bash). The explanations are inside the script for easier saving to your personal notes, its very readable from, e.g. Visual Studio Code.
I would also like to thank Jack for linking to this answer where adelphus has good, detailed, hands on explanations on the topic.
This is my first post here so please advise what should be improved.
## SETUP LOCAL GIT REPO WITH A LOCAL REMOTE
# the main elements:
# - remote repo must be initialized with --bare parameter
# - local repo must be initialized
# - local repo must have at least one commit that properly initializes a branch(root of the commit tree)
# - local repo needs to have a remote
# - local repo branch must have an upstream branch on the remote
{ # the brackets are optional, they allow to copy paste into terminal and run entire thing without interruptions, run without them to see which cmd outputs what
cd ~
rm -rf ~/test_git_local_repo/
## Option A - clean slate - you have nothing yet
mkdir -p ~/test_git_local_repo/option_a ; cd ~/test_git_local_repo/option_a
git init --bare local_remote.git # first setup the local remote
git clone local_remote.git local_repo # creates a local repo in dir local_repo
cd ~/test_git_local_repo/option_a/local_repo
git remote -v show origin # see that git clone has configured the tracking
touch README.md ; git add . ; git commit -m "initial commit on master" # properly init master
git push origin master # now have a fully functional setup, -u not needed, git clone does this for you
# check all is set-up correctly
git pull # check you can pull
git branch -avv # see local branches and their respective remote upstream branches with the initial commit
git remote -v show origin # see all branches are set to pull and push to remote
git log --oneline --graph --decorate --all # see all commits and branches tips point to the same commits for both local and remote
## Option B - you already have a local git repo and you want to connect it to a local remote
mkdir -p ~/test_git_local_repo/option_b ; cd ~/test_git_local_repo/option_b
git init --bare local_remote.git # first setup the local remote
# simulate a pre-existing git local repo you want to connect with the local remote
mkdir local_repo ; cd local_repo
git init # if not yet a git repo
touch README.md ; git add . ; git commit -m "initial commit on master" # properly init master
git checkout -b develop ; touch fileB ; git add . ; git commit -m "add fileB on develop" # create develop and fake change
# connect with local remote
cd ~/test_git_local_repo/option_b/local_repo
git remote add origin ~/test_git_local_repo/option_b/local_remote.git
git remote -v show origin # at this point you can see that there is no the tracking configured (unlike with git clone), so you need to push with -u
git push -u origin master # -u to set upstream
git push -u origin develop # -u to set upstream; need to run this for every other branch you already have in the project
# check all is set-up correctly
git pull # check you can pull
git branch -avv # see local branch(es) and its remote upstream with the initial commit
git remote -v show origin # see all remote branches are set to pull and push to remote
git log --oneline --graph --decorate --all # see all commits and branches tips point to the same commits for both local and remote
## Option C - you already have a directory with some files and you want it to be a git repo with a local remote
mkdir -p ~/test_git_local_repo/option_c ; cd ~/test_git_local_repo/option_c
git init --bare local_remote.git # first setup the local remote
# simulate a pre-existing directory with some files
mkdir local_repo ; cd local_repo ; touch README.md fileB
# make a pre-existing directory a git repo and connect it with local remote
cd ~/test_git_local_repo/option_c/local_repo
git init
git add . ; git commit -m "inital commit on master" # properly init master
git remote add origin ~/test_git_local_repo/option_c/local_remote.git
git remote -v show origin # see there is no the tracking configured (unlike with git clone), so you need to push with -u
git push -u origin master # -u to set upstream
# check all is set-up correctly
git pull # check you can pull
git branch -avv # see local branch and its remote upstream with the initial commit
git remote -v show origin # see all remote branches are set to pull and push to remote
git log --oneline --graph --decorate --all # see all commits and branches tips point to the same commits for both local and remote
}
Filename: searchForFiles.py
import os, zipfile, glob, sys
def main():
searchFile = sys.argv[1] #class file to search for, sent from batch file below (optional, see second block of code below)
listOfFilesInJar = []
for file in glob.glob("*.jar"):
archive = zipfile.ZipFile(file, 'r')
for x in archive.namelist():
if str(searchFile) in str(x):
listOfFilesInJar.append(file)
for something in listOfFilesInJar:
print("location of "+str(searchFile)+": ",something)
if __name__ == "__main__":
sys.exit(main())
You can easily run this by making a .bat file with the following text (replace "AddWorkflows.class" with the file you are searching for):
(File: CallSearchForFiles.bat)
@echo off
python -B -c "import searchForFiles;x=searchForFiles.main();" AddWorkflows.class
pause
You can double-click CallSearchForFiles.bat to run it, or call it from the command line "CallSearchForFiles.bat SearchFile.class"
Semaphore :
Using a counter or flag to control access some shared resources in a concurrent system, implies use of Semaphore.
Example:
Flags only reveal the current state of Resource, no count or any other information on the waiting or running objects on the resource.
Monitor :
A Monitor synchronizes access to an Object by communicating with threads interested in the object, asking them to acquire access or wait for some condition to become true.
Example:
It is purely a string:
startInfo.Arguments = "-sk server -sky exchange -pe -n CN=localhost -ir LocalMachine -is Root -ic MyCA.cer -sr LocalMachine -ss My MyAdHocTestCert.cer"
Of course, when arguments contain whitespaces you'll have to escape them using \" \", like:
"... -ss \"My MyAdHocTestCert.cer\""
See MSDN for this.
$ echo "This is a sentence." | tr -s " " "\012"
This
is
a
sentence.
For checking for spaces, use grep:
$ echo "This is a sentence." | grep " " > /dev/null
$ echo $?
0
$ echo "Thisisasentence." | grep " " > /dev/null
$ echo $?
1
I tested various combinations of android:background
, android:backgroundTint
and android:backgroundTintMode
.
android:backgroundTint
applies the color filter to the resource of android:background
when used together with android:backgroundTintMode
.
Here are the results:
Here's the code if you want to experiment further:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:orientation="vertical"
android:layout_height="match_parent"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:showIn="@layout/activity_main">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="32dp"
android:textSize="45sp"
android:background="#37AEE4"
android:text="Background" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="32dp"
android:textSize="45sp"
android:backgroundTint="#FEFBDE"
android:text="Background tint" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="32dp"
android:textSize="45sp"
android:background="#37AEE4"
android:backgroundTint="#FEFBDE"
android:text="Both together" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="32dp"
android:textSize="45sp"
android:background="#37AEE4"
android:backgroundTint="#FEFBDE"
android:backgroundTintMode="multiply"
android:text="With tint mode" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="32dp"
android:textSize="45sp"
android:text="Without any" />
</LinearLayout>
For people passing by now, in 2017, the new best way to achieve what you want is by using ConstraintLayout like this:
<ImageView
android:layout_width="0dp"
android:layout_height="0dp"
android:scaleType="centerCrop"
app:layout_constraintDimensionRatio="1:1" />
And don't forget to add constraints to all of the four directions as needed by your layout.
Build a Responsive UI with ConstraintLayout
Furthermore, by now, PercentRelativeLayout has been deprecated (see Android documentation).
Bit out of topic
this is a little util for watching sharedpreferences
based on upper answers
may be for someone this will be helpful
@SuppressWarnings("unused")
public void printAll() {
Map<String, ?> prefAll = PreferenceManager
.getDefaultSharedPreferences(context).getAll();
if (prefAll == null) {
return;
}
List<Map.Entry<String, ?>> list = new ArrayList<>();
list.addAll(prefAll.entrySet());
Collections.sort(list, new Comparator<Map.Entry<String, ?>>() {
public int compare(final Map.Entry<String, ?> entry1, final Map.Entry<String, ?> entry2) {
return entry1.getKey().compareTo(entry2.getKey());
}
});
Timber.i("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~");
Timber.i("Printing all sharedPreferences");
for(Map.Entry<String, ?> entry : list) {
Timber.i("%s: %s", entry.getKey(), entry.getValue());
}
Timber.i("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~");
}
In IntelliJ IDEA you can download artifact sources automatically while importing by switching on Automatically download Sources option:
Settings
? Build, Execution, Deployment
? Build Tools
? Maven
? Importing
As has been pointed out, this error is likely caused by a missing or incorrect intent-filter
.
I would just like to add that this error also shows up if you set android:exported="false"
on your launcher activity (in the manifest).
I find that running
export VIRTUALENVWRAPPER_PYTHON=/usr/bin/python3
and
export VIRTUALENVWRAPPER_VIRTUALENV=/usr/bin/virtualenv-3.4
in the command line on Ubuntu forces mkvirtualenv to use python3 and virtualenv-3.4. One still has to do
mkvirtualenv --python=/usr/bin/python3 nameOfEnvironment
to create the environment. This is assuming that you have python3 in /usr/bin/python3 and virtualenv-3.4 in /usr/local/bin/virtualenv-3.4.
I'm sorry to do this, but I couldn't use any of the other answers as-is and haven't time to duke it out in the comments.
Uses C# 6 syntax.
static class EnumExtensions
{
/// returns the localized Name, if a [Display(Name="Localised Name")] attribute is applied to the enum member
/// returns null if there isnt an attribute
public static string DisplayNameOrEnumName(this Enum value)
// => value.DisplayNameOrDefault() ?? value.ToString()
{
// More efficient form of ^ based on http://stackoverflow.com/a/17034624/11635
var enumType = value.GetType();
var enumMemberName = Enum.GetName(enumType, value);
return enumType
.GetEnumMemberAttribute<DisplayAttribute>(enumMemberName)
?.GetName() // Potentially localized
?? enumMemberName; // Or fall back to the enum name
}
/// returns the localized Name, if a [Display] attribute is applied to the enum member
/// returns null if there is no attribute
public static string DisplayNameOrDefault(this Enum value) =>
value.GetEnumMemberAttribute<DisplayAttribute>()?.GetName();
static TAttribute GetEnumMemberAttribute<TAttribute>(this Enum value) where TAttribute : Attribute =>
value.GetType().GetEnumMemberAttribute<TAttribute>(value.ToString());
static TAttribute GetEnumMemberAttribute<TAttribute>(this Type enumType, string enumMemberName) where TAttribute : Attribute =>
enumType.GetMember(enumMemberName).Single().GetCustomAttribute<TAttribute>();
}
Using LINQ to xml if you are using framework 3.5:
using System.Xml.Linq;
XDocument xmlFile = XDocument.Load("books.xml");
var query = from c in xmlFile.Elements("catalog").Elements("book")
select c;
foreach (XElement book in query)
{
book.Attribute("attr1").Value = "MyNewValue";
}
xmlFile.Save("books.xml");
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package javaapplication1;
import java.io.File;
import java.util.Scanner;
/**
*
* @author zsagga
*/
class openFile {
private Scanner x ;
int count = 0 ;
String path = "C:\\Users\\zsagga\\Documents\\NetBeansProjects\\JavaApplication1\\src\\javaapplication1\\Readthis.txt";
public void openFile() {
// System.out.println("I'm Here");
try {
x = new Scanner(new File(path));
}
catch (Exception e) {
System.out.println("Could not find a file");
}
}
public void readFile() {
while (x.hasNextLine()){
count ++ ;
x.nextLine();
}
System.out.println(count);
}
public void closeFile() {
x.close();
}
}
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package javaapplication1;
/**
*
* @author zsagga
*/
public class JavaApplication1 {
public static void main(String[] args) {
// TODO code application logic here
openFile r = new openFile();
r.openFile();
r.readFile();
r.closeFile();
}
}
As for how to represent a single apostrophe as a string in Python, you can simply surround it with double quotes ("'"
) or you can escape it inside single quotes ('\''
).
To remove apostrophes from a string, a simple approach is to just replace the apostrophe character with an empty string:
>>> "didn't".replace("'", "")
'didnt'