Regarding tables names, case, etc, the prevalent convention is:
UPPER CASE
lower_case_with_underscores
UPDATE my_table SET name = 5;
This is not written in stone, but the bit about identifiers in lower case is highly recommended, IMO. Postgresql treats identifiers case insensitively when not quoted (it actually folds them to lowercase internally), and case sensitively when quoted; many people are not aware of this idiosyncrasy. Using always lowercase you are safe. Anyway, it's acceptable to use camelCase
or PascalCase
(or UPPER_CASE
), as long as you are consistent: either quote identifiers always or never (and this includes the schema creation!).
I am not aware of many more conventions or style guides. Surrogate keys are normally made from a sequence (usually with the serial
macro), it would be convenient to stick to that naming for those sequences if you create them by hand (tablename_colname_seq
).
See also some discussion here, here and (for general SQL) here, all with several related links.
Note: Postgresql 10 introduced identity
columns as an SQL-compliant replacement for serial.
Simply you can do like this:
var formData = new FormData();
formData.append('array[key1]', this.array.key1);
formData.append('array[key2]', this.array.key2);
Just execute, to clean gems obsolete and remove print warningns after bundle.
bundle clean --force
_x000D_
Update:
Apps targeting Android 7.0 (API level 24) and higher do not receive CONNECTIVITY_ACTION broadcasts if they declare the broadcast receiver in their manifest. Apps will still receive CONNECTIVITY_ACTION broadcasts if they register their BroadcastReceiver with Context.registerReceiver() and that context is still valid.
You need to register the receiver via registerReceiver()
method:
IntentFilter intentFilter = new IntentFilter("android.net.conn.CONNECTIVITY_CHANGE");
mCtx.registerReceiver(new NetworkBroadcastReceiver(), intentFilter);
The default behaviour of Newtonsoft.Json is going to find the public
constructors. If your default constructor is only used in containing class or the same assembly, you can reduce the access level to protected
or internal
so that Newtonsoft.Json will pick your desired public
constructor.
Admittedly, this solution is rather very limited to specific cases.
internal Result() { }
public Result(int? code, string format, Dictionary<string, string> details = null)
{
Code = code ?? ERROR_CODE;
Format = format;
if (details == null)
Details = new Dictionary<string, string>();
else
Details = details;
}
You could also try wrapping the two div's in two div's with unique ids. Then select the div by $("#div1","#wraper1")
and $("#div1","#wraper2")
Here you go:
<div id="wraper1">
<div id="div1">
</div>
<div id="wraper2">
<div id="div1">
</div>
In simple terms, the reasons are as follows.
Object
has monitors.Object
. Only one thread can hold object monitor at a time for synchronized
methods/blocks.wait(), notify() and notifyAll()
method being in Object
class allows all the threads created on that object
to communicate with othersynchronized or Lock
API) and Communication (wait() and notify()
) are two different concepts. If Thread
class contains wait(), notify() and notifyAll()
methods, then it will create below problems:
Thread
communication problemSynchronization
on object won’t be possible. If each thread will have monitor, we won’t have any way of achieving synchronizationInconsistency
in state of object Refer to this article for more details.
A better alternative to using pointers to pointers is to use std::vector
. That takes care of the details of memory allocation and deallocation.
std::vector<std::vector<int>> create2DArray(unsigned height, unsigned width)
{
return std::vector<std::vector<int>>(height, std::vector<int>(width, 0));
}
You misspelled permission
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
Try this:
<div class="rmz-srchbg">
<input type="text" id="globalsearchstr" name="search" value="" class="rmz-txtbox">
<input type="submit" value=" " id="srchbtn" class="rmz-srchico">
<br style="clear:both;">
</div>
<script>
$(function(){
$('#globalsearchstr').on('focus mouseenter', function(){
$(this).parent().css("background", "url(/images/r-srchbg_white.png) no-repeat");
});
});
</script>
When a function call is invoked by a Java application, a stack frame is allocated on the call stack. The stack frame contains the parameters of the invoked method, its local parameters, and the return address of the method.
The return address denotes the execution point from which, the program execution shall continue after the invoked method returns. If there is no space for a new stack frame then, the StackOverflowError is thrown by the Java Virtual Machine (JVM).
The most common case that can possibly exhaust a Java application’s stack is recursion.
Please Have a look
There are two strategies:
Use Database-generated ID
(int
or GUID
)
Cons:
You should perform SaveChanges()
to get the ID
for just saved entities.
Pros:
Can use int
identity.
Use client generated ID
- GUID only.
Pros:
Minification of SaveChanges
operations.
Able to insert a big graph of new objects per one operation.
Cons:
Allowed only for GUID
/**
* Check if a number is even or not using modulus operator.
*
* @param number the number to be checked.
* @return {@code true} if the given number is even, otherwise {@code false}.
*/
public static boolean isEven(int number) {
return number % 2 == 0;
}
/**
* Check if a number is even or not using & operator.
*
* @param number the number to be checked.
* @return {@code true} if the given number is even, otherwise {@code false}.
*/
public static boolean isEvenFaster(int number) {
return (number & 1) == 0;
}
Open Sql server 2014 Configuration Manager.
Click Sql server services and start the sql server service if it is stopped
Then click Check SQL server Network Configuration for TCP/IP Enabled
then restart the sql server management studio (SSMS) and connect your local database engine
In your example, You don't need to. As a standard programming practice, all variables being referred to inside some code block, say for example try{} catch(){}
, and being referred to outside the block as well, you need to declare the variables outside the try block first e.g.
This is helpful when your equals method call throws some exception e.g. NullPointerException
;
boolean isMatch = false;
try{
isMatch = email1.equals (email2);
}catch(NullPointerException npe){
.....
}
System.out.print("Match=="+isMatch);
if(isMatch){
......
}
My 2 cents with null coalescing operator ??
(since PHP 7)
function foo($blah, $x = null, $y = null) {
$varX = $x ?? 'Default value X';
$varY = $y ?? 'Default value Y';
// ...
}
You can check more examples on my repl.it
If replacement is of different length:
If replacement is of same length:
This is the best you can get, with constraints of your question. However, at least the example in question is replacing string of same length, So the second way should work.
Also be aware: Java strings are Unicode text, while text files are bytes with some encoding. If encoding is UTF8, and your text is not Latin1 (or plain 7-bit ASCII), you have to check length of encoded byte array, not length of Java string.
Yes, see "Loading Page Fragments" on http://api.jquery.com/load/.
In short, you add the selector after the URL. For example:
$('#result').load('ajax/test.html #container');
To answer your questions in order:
1) There is no specific name for this. It's simply multiple elements with the same name (and in this case type as well). Name isn't unique, which is why id was invented (it's supposed to be unique).
2)
function getElementsByTagAndName(tag, name) { //you could pass in the starting element which would make this faster var elem = document.getElementsByTagName(tag); var arr = new Array(); var i = 0; var iarr = 0; var att; for(; i < elem.length; i++) { att = elem[i].getAttribute("name"); if(att == name) { arr[iarr] = elem[i]; iarr++; } } return arr; }
A naive, CPU-intensive method to block execution for a number of milliseconds:
/**
* Delay for a number of milliseconds
*/
function sleep(delay) {
var start = new Date().getTime();
while (new Date().getTime() < start + delay);
}
$cfg['Servers'][$i]['auth_type'] = 'cookie';
should work.
From the manual:
auth_type = 'cookie' prompts for a MySQL username and password in a friendly HTML form. This is also the only way by which one can log in to an arbitrary server (if $cfg['AllowArbitraryServer'] is enabled). Cookie is good for most installations (default in pma 3.1+), it provides security over config and allows multiple users to use the same phpMyAdmin installation. For IIS users, cookie is often easier to configure than http.
Swift iOS:
Just For Information : I have used this:
extension String {
func urlEncode() -> CFString {
return CFURLCreateStringByAddingPercentEscapes(
nil,
self,
nil,
"!*'();:@&=+$,/?%#[]",
CFStringBuiltInEncodings.UTF8.rawValue
)
}
}// end extension String
.h files, or header files, are used to list the publicly accessible instance variables and and methods in the class declaration. .cpp files, or implementation files, are used to actually implement those methods and use those instance variables.
The reason they are separate is because .h files aren't compiled into binary code while .cpp files are. Take a library, for example. Say you are the author and you don't want it to be open source. So you distribute the compiled binary library and the header files to your customers. That allows them to easily see all the information about your library's classes they can use without being able to see how you implemented those methods. They are more for the people using your code rather than the compiler. As was said before: it's the convention.
It runs successfully the first time, but if I run it again, I keep getting a System.OutOfMemoryException. What are some reasons this could be happening?
Regardless of what the others have said, the error has nothing to do with forgetting to dispose your DBCommand or DBConnection, and you will not fix your error by disposing of either of them.
The error has everything to do with your dataset which contains nearly 600,000 rows of data. Apparently your dataset consumes more than 50% of the available memory on your machine. Clearly, you'll run out of memory when you return another dataset of the same size before the first one has been garbage collected. Simple as that.
You can remedy this problem in a few ways:
Consider returning fewer records. I personally can't imagine a time when returning 600K records has ever been useful to a user. To minimize the records returned, try:
Limiting your query to the first 1000 records. If there are more than 1000 results returned from the query, inform the user to narrow their search results.
If your users really insist on seeing that much data at once, try paging the data. Remember: Google never shows you all 22 bajillion results of a search at once, it shows you 20 or so records at a time. Google probably doesn't hold all 22 bajillion results in memory at once, it probably finds its more memory efficient to requery its database to generate a new page.
If you just need to iterate through the data and you don't need random access, try returning a datareader instead. A datareader only loads one record into memory at a time.
If none of those are an option, then you need to force .NET to free up the memory used by the dataset before calling your method using one of these methods:
Remove all references to your old dataset. Anything holding on to a refenence of your dataset will prevent it from being reclaimed by memory.
If you can't null all the references to your dataset, clear all of the rows from the dataset and any objects bound to those rows instead. This removes references to the datarows and allows them to be eaten by the garbage collector.
I don't believe you'll need to call GC.Collect()
to force a gen cycle. Not only is it generally a bad idea to call GC.Collect()
, because sufficient memory pressure will cause .NET invoke the garbage collector on its own.
Note: calling Dispose on your dataset does not free any memory, nor does it invoke the garbage collector, nor does it remove a reference to your dataset. Dispose is used to clean up unmanaged resources, but the DataSet does not have any unmanaged resources. It only implements IDispoable because it inherents from MarshalByValueComponent, so the Dispose method on the dataset is pretty much useless.
Working with Git 2.3.2 ...
git branch --set-upstream-to myfork/master
Now status
, push
and pull
are pointed to myfork
remote
The quick fix is ??a just restart docker:
sudo service docker stop
sudo service docker start
I had to include "PROJECT_NAME/osdep.h" and that includes the os specific configurations.
I would look in other files using the types you are interested in and find where/how they are defined (by looking at includes).
You can't force accessing/changing element to which the user normally doesn't have access, as Selenium is designed to imitate user interaction.
If this error happens, check if:
maximize()
in node.js, maximize_window()
in Python),executeScript()
in node.js, execute_script()
in Python).Tons of great suggestions here, just going to throw ZingChart onto the stack for good measure. We recently released a jQuery wrapper for the library that makes it even easier to build and customize charts. The CDN links are in the demo below.
I'm on the ZingChart team and we're here to answer any questions any of you might have!
$('#pie-chart').zingchart({_x000D_
"data": {_x000D_
"type": "pie",_x000D_
"legend": {},_x000D_
"series": [{_x000D_
"values": [5]_x000D_
}, {_x000D_
"values": [10]_x000D_
}, {_x000D_
"values": [15]_x000D_
}]_x000D_
}_x000D_
});
_x000D_
<script src="http://cdn.zingchart.com/zingchart.min.js"></script>_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>_x000D_
<script src="http://cdn.zingchart.com/zingchart.jquery.min.js"></script>_x000D_
_x000D_
<div id="pie-chart"></div>
_x000D_
SQL: show full processlist;
This is what the MySQL Workbench does.
In my case i had some problem with opacity transition so this one fix it:
#dropdown {
transition:.6s opacity;
}
#dropdown.ns {
opacity:0;
transition:.6s all;
}
#dropdown.fade {
opacity:1;
}
Mouse Enter
$('#dropdown').removeClass('ns').addClass('fade');
Mouse Leave
$('#dropdown').addClass('ns').removeClass('fade');
Open the procedure in SQL Developer and run it from there. SQL Developer displays the SQL that it runs.
BEGIN
PROCEEDURE_NAME_HERE();
END;
I change the class with implements TextWatcher to use Brasil currency formats and adjusting cursor position when editing the value.
public class MoneyTextWatcher implements TextWatcher { private EditText editText; private String lastAmount = ""; private int lastCursorPosition = -1; public MoneyTextWatcher(EditText editText) { super(); this.editText = editText; } @Override public void onTextChanged(CharSequence amount, int start, int before, int count) { if (!amount.toString().equals(lastAmount)) { String cleanString = clearCurrencyToNumber(amount.toString()); try { String formattedAmount = transformToCurrency(cleanString); editText.removeTextChangedListener(this); editText.setText(formattedAmount); editText.setSelection(formattedAmount.length()); editText.addTextChangedListener(this); if (lastCursorPosition != lastAmount.length() && lastCursorPosition != -1) { int lengthDelta = formattedAmount.length() - lastAmount.length(); int newCursorOffset = max(0, min(formattedAmount.length(), lastCursorPosition + lengthDelta)); editText.setSelection(newCursorOffset); } } catch (Exception e) { //log something } } } @Override public void afterTextChanged(Editable s) { } @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) { String value = s.toString(); if(!value.equals("")){ String cleanString = clearCurrencyToNumber(value); String formattedAmount = transformToCurrency(cleanString); lastAmount = formattedAmount; lastCursorPosition = editText.getSelectionStart(); } } public static String clearCurrencyToNumber(String currencyValue) { String result = null; if (currencyValue == null) { result = ""; } else { result = currencyValue.replaceAll("[(a-z)|(A-Z)|($,. )]", ""); } return result; } public static boolean isCurrencyValue(String currencyValue, boolean podeSerZero) { boolean result; if (currencyValue == null || currencyValue.length() == 0) { result = false; } else { if (!podeSerZero && currencyValue.equals("0,00")) { result = false; } else { result = true; } } return result; } public static String transformToCurrency(String value) { double parsed = Double.parseDouble(value); String formatted = NumberFormat.getCurrencyInstance(new Locale("pt", "BR")).format((parsed / 100)); formatted = formatted.replaceAll("[^(0-9)(.,)]", ""); return formatted; } }
You can make your own sharing button using the LinkedIn ShareArticle URL, which can have the following parameters:
https://www.linkedin.com/shareArticle?mini=true&url={articleUrl}&title={articleTitle}&summary={articleSummary}&source={articleSource}
You can find the documentation here, just choose "Customized URL" to see the details.
On Windows 7, go to C:\Users\%User_Name%\AppData\Roaming\Subversion and remove the auth directory. Just be aware if you are connected to more than 1 SVN server that this will remove the authentication for all of the SVN servers you have configured. If you want to reset just a single server:
Inside the auth directory you should see a folder called svn.simple. Open each of those files with a text editor to determine which one to remove and then remove just that single file.
An other way of CASE:
SELECT *
FROM MyTable
WHERE 1 = CASE WHEN @myParm = value1 AND MyColumn IS NULL THEN 1
WHEN @myParm = value2 AND MyColumn IS NOT NULL THEN 1
WHEN @myParm = value3 THEN 1
END
There is no need to know where the files are, because when you launch a bat file the working directory is the directory where it was launched (the "master folder"), so if you have this structure:
.\mydocuments\folder\mybat.bat
.\mydocuments\folder\subfolder\file.txt
And the user starts the "mybat.bat", the working directory is ".\mydocuments\folder", so you only need to write the subfolder name in your script:
@Echo OFF
REM Do anything with ".\Subfolder\File1.txt"
PUSHD ".\Subfolder"
Type "File1.txt"
Pause&Exit
Anyway, the working directory is stored in the "%CD%" variable, and the directory where the bat was launched is stored on the argument 0. Then if you want to know the working directory on any computer you can do:
@Echo OFF
Echo Launch dir: "%~dp0"
Echo Current dir: "%CD%"
Pause&Exit
It's a C trigraph. ??!
is |
, so ??!??!
is the operator ||
function truncate(input) {
if (input.length > 5) {
return input.substring(0, 5) + '...';
}
return input;
};
or in ES6
const truncate = (input) => input.length > 5 ? `${input.substring(0, 5)}...` : input;
<?php
// Initialize the session.
session_start();
// Unset all of the session variables.
unset($_SESSION['username']);
// Finally, destroy the session.
session_destroy();
// Include URL for Login page to login again.
header("Location: login.php");
exit;
?>
Edit: Note that this answer is now out of date. See Siarhei Kuchuk's answer below for a better fix
UrlEncoding will do what you are suggesting here. With C#, you simply use HttpUtility
, as mentioned.
You can also Regex the illegal characters and then replace, but this gets far more complex, as you will have to have some form of state machine (switch ... case, for example) to replace with the correct characters. Since UrlEncode
does this up front, it is rather easy.
As for Linux versus windows, there are some characters that are acceptable in Linux that are not in Windows, but I would not worry about that, as the folder name can be returned by decoding the Url string, using UrlDecode
, so you can round trip the changes.
You can use the workbook.get_worksheet_by_name() feature: https://xlsxwriter.readthedocs.io/workbook.html#get_worksheet_by_name
According to https://xlsxwriter.readthedocs.io/changes.html the feature has been added on May 13, 2016.
"Release 0.8.7 - May 13 2016
-Fix for issue when inserting read-only images on Windows. Issue #352.
-Added get_worksheet_by_name() method to allow the retrieval of a worksheet from a workbook via its name.
-Fixed issue where internal file creation and modification dates were in the local timezone instead of UTC."
This pulls back client info as well.
var get = function(u){
var x = new XMLHttpRequest;
x.open('GET', u, false);
x.send();
return x.responseText;
}
JSON.parse(get('http://ifconfig.me/all.json'))
You should put it in the <head>. I typically put style references above JS and I order my JS from top to bottom if some of them are dependent on others, but I beleive all of the references are loaded before the page is rendered.
Strtr
replaces single characters instead of strings, so it's a good solution for this example. Supposedly strtr
is faster than str_replace
(but for this use case they're both immeasurably fast).
echo strtr('Alex Newton',' ','_');
//outputs: Alex_Newton
There is actually no need to check whether it exists or not. Since you already wants to create it if it exists , just mkdir will do
mkdir -p /home/mlzboy/b2c2/shared/db
As I understand the browser, Chrome at least, it doesn't disable the source mapping by default. That means your application's users will trigger this source-mapping request by default.
You can remove the source mapping by deleting the //@ sourceMappingURL=jquery.min.map
from your JavaScript file.
Although not exactly answering the question as formulated, but if you need or can take the end result as string you can also use
string s = Char.ConvertFromUtf32(56);
which will give you surrogate UTF-16 pairs if needed, protecting you if you are out side of the BMP.
I think the problem is more about the ZSH completion.
You need to add this line in your .zshrc:
zstyle ':completion:*' rehash true
If you have Oh-my-zsh, a PR has been made, you can integrate it until it is pulled: https://github.com/robbyrussell/oh-my-zsh/issues/3440
I created a reusable function for this. It actually parses an entire directory of requirements files and sets them to extras_require.
Latest always available here: https://gist.github.com/akatrevorjay/293c26fefa24a7b812f5
import glob
import itertools
import os
# This is getting ridiculous
try:
from pip._internal.req import parse_requirements
from pip._internal.network.session import PipSession
except ImportError:
try:
from pip._internal.req import parse_requirements
from pip._internal.download import PipSession
except ImportError:
from pip.req import parse_requirements
from pip.download import PipSession
def setup_requirements(
patterns=[
'requirements.txt', 'requirements/*.txt', 'requirements/*.pip'
],
combine=True):
"""
Parse a glob of requirements and return a dictionary of setup() options.
Create a dictionary that holds your options to setup() and update it using this.
Pass that as kwargs into setup(), viola
Any files that are not a standard option name (ie install, tests, setup) are added to extras_require with their
basename minus ext. An extra key is added to extras_require: 'all', that contains all distinct reqs combined.
Keep in mind all literally contains `all` packages in your extras.
This means if you have conflicting packages across your extras, then you're going to have a bad time.
(don't use all in these cases.)
If you're running this for a Docker build, set `combine=True`.
This will set `install_requires` to all distinct reqs combined.
Example:
>>> import setuptools
>>> _conf = dict(
... name='mainline',
... version='0.0.1',
... description='Mainline',
... author='Trevor Joynson <[email protected],io>',
... url='https://trevor.joynson.io',
... namespace_packages=['mainline'],
... packages=setuptools.find_packages(),
... zip_safe=False,
... include_package_data=True,
... )
>>> _conf.update(setup_requirements())
>>> # setuptools.setup(**_conf)
:param str pattern: Glob pattern to find requirements files
:param bool combine: Set True to set install_requires to extras_require['all']
:return dict: Dictionary of parsed setup() options
"""
session = PipSession()
# Handle setuptools insanity
key_map = {
'requirements': 'install_requires',
'install': 'install_requires',
'tests': 'tests_require',
'setup': 'setup_requires',
}
ret = {v: set() for v in key_map.values()}
extras = ret['extras_require'] = {}
all_reqs = set()
files = [glob.glob(pat) for pat in patterns]
files = itertools.chain(*files)
for full_fn in files:
# Parse
reqs = {
str(r.req)
for r in parse_requirements(full_fn, session=session)
# Must match env marker, eg:
# yarl ; python_version >= '3.0'
if r.match_markers()
}
all_reqs.update(reqs)
# Add in the right section
fn = os.path.basename(full_fn)
barefn, _ = os.path.splitext(fn)
key = key_map.get(barefn)
if key:
ret[key].update(reqs)
extras[key] = reqs
extras[barefn] = reqs
if 'all' not in extras:
extras['all'] = list(all_reqs)
if combine:
extras['install'] = ret['install_requires']
ret['install_requires'] = list(all_reqs)
def _listify(dikt):
ret = {}
for k, v in dikt.items():
if isinstance(v, set):
v = list(v)
elif isinstance(v, dict):
v = _listify(v)
ret[k] = v
return ret
ret = _listify(ret)
return ret
__all__ = ['setup_requirements']
if __name__ == '__main__':
reqs = setup_requirements()
print(reqs)
For the following HTML document:
<html>
<body>
<a href="http://www.example.com">Example</a>
<a href="http://www.stackoverflow.com">SO</a>
</body>
</html>
The xpath query /html/body//a/@href
(or simply //a/@href
) will return:
http://www.example.com http://www.stackoverflow.com
To select a specific instance use /html/body//a[N]/@href
,
$ /html/body//a[2]/@href http://www.stackoverflow.com
To test for strings contained in the attribute and return the attribute itself place the check on the tag not on the attribute:
$ /html/body//a[contains(@href,'example')]/@href http://www.example.com
Mixing the two:
$ /html/body//a[contains(@href,'com')][2]/@href http://www.stackoverflow.com
This is how it looks like in Kotlin
main.xml
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<item
android:id="@+id/action_settings"
android:orderInCategory="100"
android:title="@string/action_settings"
app:showAsAction="never" />
<item
android:id="@+id/action_logout"
android:orderInCategory="101"
android:title="@string/sign_out"
app:showAsAction="never" />
Then in MainActivity
override fun onCreateOptionsMenu(menu: Menu): Boolean {
// Inflate the menu; this adds items to the action bar if it is present.
menuInflater.inflate(R.menu.main, menu)
return true
}
This is onOptionsItemSelected function
override fun onOptionsItemSelected(item: MenuItem): Boolean {
return when(item.itemId){
R.id.action_settings -> {
true
}
R.id.action_logout -> {
signOut()
true
}
else -> return super.onOptionsItemSelected(item)
}
}
For starting new activity
private fun signOut(){
MySharedPreferences.clearToken()
startSplashScreenActivity()
}
private fun startSplashScreenActivity(){
val intent = Intent(GrepToDo.applicationContext(), SplashScreenActivity::class.java)
startActivity(intent)
finish()
}
- How do i make CaseInsensitiveString behave like String so the above statement is ok (with and w/out extending String)? What is it about String that makes it ok to just be able to pass it a literal like that? From my understanding there is no "copy constructor" concept in Java right?
Enough has been said from the first point. "Polish" is an string literal and cannot be assigned to the CaseInsentiviveString class.
Now about the second point
Although you can't create new literals, you can follow the first item of that book for a "similar" approach so the following statements are true:
// Lets test the insensitiveness
CaseInsensitiveString cis5 = CaseInsensitiveString.valueOf("sOmEtHiNg");
CaseInsensitiveString cis6 = CaseInsensitiveString.valueOf("SoMeThInG");
assert cis5 == cis6;
assert cis5.equals(cis6);
Here's the code.
C:\oreyes\samples\java\insensitive>type CaseInsensitiveString.java
import java.util.Map;
import java.util.HashMap;
public final class CaseInsensitiveString {
private static final Map<String,CaseInsensitiveString> innerPool
= new HashMap<String,CaseInsensitiveString>();
private final String s;
// Effective Java Item 1: Consider providing static factory methods instead of constructors
public static CaseInsensitiveString valueOf( String s ) {
if ( s == null ) {
return null;
}
String value = s.toLowerCase();
if ( !CaseInsensitiveString.innerPool.containsKey( value ) ) {
CaseInsensitiveString.innerPool.put( value , new CaseInsensitiveString( value ) );
}
return CaseInsensitiveString.innerPool.get( value );
}
// Class constructor: This creates a new instance each time it is invoked.
public CaseInsensitiveString(String s){
if (s == null) {
throw new NullPointerException();
}
this.s = s.toLowerCase();
}
public boolean equals( Object other ) {
if ( other instanceof CaseInsensitiveString ) {
CaseInsensitiveString otherInstance = ( CaseInsensitiveString ) other;
return this.s.equals( otherInstance.s );
}
return false;
}
public int hashCode(){
return this.s.hashCode();
}
// Test the class using the "assert" keyword
public static void main( String [] args ) {
// Creating two different objects as in new String("Polish") == new String("Polish") is false
CaseInsensitiveString cis1 = new CaseInsensitiveString("Polish");
CaseInsensitiveString cis2 = new CaseInsensitiveString("Polish");
// references cis1 and cis2 points to differents objects.
// so the following is true
assert cis1 != cis2; // Yes they're different
assert cis1.equals(cis2); // Yes they're equals thanks to the equals method
// Now let's try the valueOf idiom
CaseInsensitiveString cis3 = CaseInsensitiveString.valueOf("Polish");
CaseInsensitiveString cis4 = CaseInsensitiveString.valueOf("Polish");
// References cis3 and cis4 points to same object.
// so the following is true
assert cis3 == cis4; // Yes they point to the same object
assert cis3.equals(cis4); // and still equals.
// Lets test the insensitiveness
CaseInsensitiveString cis5 = CaseInsensitiveString.valueOf("sOmEtHiNg");
CaseInsensitiveString cis6 = CaseInsensitiveString.valueOf("SoMeThInG");
assert cis5 == cis6;
assert cis5.equals(cis6);
// Futhermore
CaseInsensitiveString cis7 = CaseInsensitiveString.valueOf("SomethinG");
CaseInsensitiveString cis8 = CaseInsensitiveString.valueOf("someThing");
assert cis8 == cis5 && cis7 == cis6;
assert cis7.equals(cis5) && cis6.equals(cis8);
}
}
C:\oreyes\samples\java\insensitive>javac CaseInsensitiveString.java
C:\oreyes\samples\java\insensitive>java -ea CaseInsensitiveString
C:\oreyes\samples\java\insensitive>
That is, create an internal pool of CaseInsensitiveString objects, and return the corrensponding instance from there.
This way the "==" operator returns true for two objects references representing the same value.
This is useful when similar objects are used very frequently and creating cost is expensive.
The string class documentation states that the class uses an internal pool
The class is not complete, some interesting issues arises when we try to walk the contents of the object at implementing the CharSequence interface, but this code is good enough to show how that item in the Book could be applied.
It is important to notice that by using the internalPool object, the references are not released and thus not garbage collectible, and that may become an issue if a lot of objects are created.
It works for the String class because it is used intensively and the pool is constituted of "interned" object only.
It works well for the Boolean class too, because there are only two possible values.
And finally that's also the reason why valueOf(int) in class Integer is limited to -128 to 127 int values.
In Android Studio 4.0
you need only these few steps:
applicationId
inside app/build.gradle
com.domain.appname
to com.domain.newappname
highlight appname
)I had a custom ListAdapter
and was calling super.notifyDataSetChanged()
at the beginning and not the end of the method
@Override
public void notifyDataSetChanged() {
recalculate();
super.notifyDataSetChanged();
}
If we need only one column to be numeric
yyz$b <- as.numeric(as.character(yyz$b))
But, if all the columns needs to changed to numeric
, use lapply
to loop over the columns and convert to numeric
by first converting it to character
class as the columns were factor
.
yyz[] <- lapply(yyz, function(x) as.numeric(as.character(x)))
Both the columns in the OP's post are factor
because of the string "n/a"
. This could be easily avoided while reading the file using na.strings = "n/a"
in the read.table/read.csv
or if we are using data.frame
, we can have character
columns with stringsAsFactors=FALSE
(the default is stringsAsFactors=TRUE
)
Regarding the usage of apply
, it converts the dataset to matrix
and matrix
can hold only a single class. To check the class
, we need
lapply(yyz, class)
Or
sapply(yyz, class)
Or check
str(yyz)
For a more detailed answer on creating your own colormaps, I highly suggest visiting this page
If that answer is too much work, you can quickly make your own list of colors and pass them to the color
parameter. All the colormaps are in the cm
matplotlib module. Let's get a list of 30 RGB (plus alpha) color values from the reversed inferno colormap. To do so, first get the colormap and then pass it a sequence of values between 0 and 1. Here, we use np.linspace
to create 30 equally-spaced values between .4 and .8 that represent that portion of the colormap.
from matplotlib import cm
color = cm.inferno_r(np.linspace(.4, .8, 30))
color
array([[ 0.865006, 0.316822, 0.226055, 1. ],
[ 0.851384, 0.30226 , 0.239636, 1. ],
[ 0.832299, 0.283913, 0.257383, 1. ],
[ 0.817341, 0.270954, 0.27039 , 1. ],
[ 0.796607, 0.254728, 0.287264, 1. ],
[ 0.775059, 0.239667, 0.303526, 1. ],
[ 0.758422, 0.229097, 0.315266, 1. ],
[ 0.735683, 0.215906, 0.330245, 1. ],
.....
Then we can use this to plot, using the data from the original post:
import random
x = [{i: random.randint(1, 5)} for i in range(30)]
df = pd.DataFrame(x)
df.plot(kind='bar', stacked=True, color=color, legend=False, figsize=(12, 4))
1d returned 1 exit status error
First of all you have to create a project by clicking file new and then project and give project name select the language c or c++ and select empty also. Then your program is under that project... And then give a program name save it.... Ensure that your under some project to compile and run a program...
Swift 2.x
let delayTime = dispatch_time(DISPATCH_TIME_NOW, Int64(1 * Double(NSEC_PER_SEC)))
dispatch_after(delayTime, dispatch_get_main_queue()) {
print("do some work")
}
Swift 3.x --&-- Swift 4
DispatchQueue.main.asyncAfter(deadline: .now() + 1.0) {
print("do some work")
}
or pass a escaping closure
func delay(seconds: Double, completion: @escaping()-> Void) {
DispatchQueue.main.asyncAfter(deadline: .now() + seconds, execute: completion)
}
I recommend using NS_OPTIONS or NS_ENUM. You can read more about it here: http://nshipster.com/ns_enum-ns_options/
Here's an example from my own code using NS_OPTIONS, I have an utility that sets a sublayer (CALayer) on a UIView's layer to create a border.
The h. file:
typedef NS_OPTIONS(NSUInteger, BSTCMBorder) {
BSTCMBOrderNoBorder = 0,
BSTCMBorderTop = 1 << 0,
BSTCMBorderRight = 1 << 1,
BSTCMBorderBottom = 1 << 2,
BSTCMBOrderLeft = 1 << 3
};
@interface BSTCMBorderUtility : NSObject
+ (void)setBorderOnView:(UIView *)view
border:(BSTCMBorder)border
width:(CGFloat)width
color:(UIColor *)color;
@end
The .m file:
@implementation BSTCMBorderUtility
+ (void)setBorderOnView:(UIView *)view
border:(BSTCMBorder)border
width:(CGFloat)width
color:(UIColor *)color
{
// Make a left border on the view
if (border & BSTCMBOrderLeft) {
}
// Make a right border on the view
if (border & BSTCMBorderRight) {
}
// Etc
}
@end
SELECT * FROM
(
SELECT ename, sal,
DENSE_RANK() OVER (ORDER BY SAL DESC) EMPRANK
FROM emp
)
emp1 WHERE emprank <=5
You can use the Eclipse Indigo EE version for Android development. It is quite good, and I haven't faced any issues so far.
Specifications:
Articles:
Tutorial:
Libraries:
Ivo nailed it, but I'll mention that there is one dirty trick you can use, though I don't recommend it if you're going for style points: You can embed JavaScript code directly in your CoffeeScript by escaping it with backticks.
However, here's why this is usually a bad idea: The CoffeeScript compiler is unaware of those variables, which means they won't obey normal CoffeeScript scoping rules. So,
`foo = 'bar'`
foo = 'something else'
compiles to
foo = 'bar';
var foo = 'something else';
and now you've got yourself two foo
s in different scopes. There's no way to modify the global foo
from CoffeeScript code without referencing the global object, as Ivy described.
Of course, this is only a problem if you make an assignment to foo
in CoffeeScript—if foo
became read-only after being given its initial value (i.e. it's a global constant), then the embedded JavaScript solution approach might be kinda sorta acceptable (though still not recommended).
Yes, if you do a git rm <filename>
and commit & push those changes. The file will disappear from the repository for that changeset and future commits.
The file will still be available for the previous revisions.
I struggled for ages on this one before I realized my error - I had used commas instead of semicolons in the connect string
The create_function()
function is deprecated as of php v7.2.0. You can use the array_map()
as given,
function getObjectID($obj){
return $obj->id;
}
$IDs = array_map('getObjectID' , $array_of_object);
Alternatively, you can use array_column()
function which returns the values from a single column of the input, identified by the column_key. Optionally, an index_key may be provided to index the values in the returned array by the values from the index_key column of the input array. You can use the array_column as given,
$IDs = array_column($array_of_object , 'id');
In a similar use case, this worked for me...
<button onclick="window.open('https://www.w3.org/', '_blank');"> My Button </button>
var fruits = ["apple","pear","peach"];
for (fruit of fruits) {
console.log(fruits.indexOf(fruit));
//it shows the index of every fruit from fruits
}
the for loop traverses the array, while the indexof property takes the value of the index that matches the array. P.D this method has some flaws with numbers, so use fruits
input(char_val,current_date_format);
You can specify any date format at display time, like set char_val=date9.;
Getting Started Install from npm:
npm install imask And import or require:
import IMask from 'imask';
or use CDN:
var dateMask = IMask(element, {
mask: Date, // enable date mask
// other options are optional
pattern: 'Y-`m-`d', // Pattern mask with defined blocks, default is 'd{.}`m{.}`Y'
// you can provide your own blocks definitions, default blocks for date mask are:
blocks: {
d: {
mask: IMask.MaskedRange,
from: 1,
to: 31,
maxLength: 2,
},
m: {
mask: IMask.MaskedRange,
from: 1,
to: 12,
maxLength: 2,
},
Y: {
mask: IMask.MaskedRange,
from: 1900,
to: 9999,
}
},
// define date -> str convertion
format: function (date) {
var day = date.getDate();
var month = date.getMonth() + 1;
var year = date.getFullYear();
if (day < 10) day = "0" + day;
if (month < 10) month = "0" + month;
return [year, month, day].join('-');
},
// define str -> date convertion
parse: function (str) {
var yearMonthDay = str.split('-');
return new Date(yearMonthDay[0], yearMonthDay[1] - 1, yearMonthDay[2]);
},
// optional interval options
min: new Date(2000, 0, 1), // defaults to `1900-01-01`
max: new Date(2020, 0, 1), // defaults to `9999-01-01`
autofix: true, // defaults to `false`
// also Pattern options can be set
lazy: false,
// and other common options
overwrite: true // defaults to `false`
});
Try this.
public static void main(String[] args) {
EchoServer0 myServer;
myServer = new EchoServer0();
myServer.listen();
}
What you were trying to do was declaring a variable of type Object
, not creating anything for that variable to reference, then trying to call a method that didn't exist (in the class Object
) on an object that hadn't been created. It was never going to work.
startdate = moment().subtract(1, 'days').startOf('day')
Eli, it is important to remember that in css specificity goes a long way. If your inline css is using the !important and isn't overriding the imported stylesheet rules then closely observe the code using a tool such as 'firebug' for firefox. It will show you the css being applied to your element. If there is a syntax error firebug will show you in the warning panel that it has thrown out the declaration.
Also remember that in general an id is more specific than a class is more specific than an element.
Hope that helps.
-Rick
Only need to run sudo ng serve to resolve the issue.
I struggled with this for a long time. I am using Angular 6 and I found that
let headers = new HttpHeaders();
headers = headers.append('key', 'value');
did not work. But what did work was
let headers = new HttpHeaders().append('key', 'value');
did, which makes sense when you realize they are immutable. So having created a header you can't add to it. I haven't tried it, but I suspect
let headers = new HttpHeaders();
let headers1 = headers.append('key', 'value');
would work too.
You might have 10,000 users total, but that's not the same as concurrent users. In this context, concurrent scripts being run.
For example, if your visitor visits index.php, and it makes a database query to get some user details, that request might live for 250ms. You can limit how long those MySQL connections live even further by opening and closing them only when you are querying, instead of leaving it open for the duration of the script.
While it is hard to make any type of formula to predict how many connections would be open at a time, I'd venture the following:
You probably won't have more than 500 active users at any given time with a user base of 10,000 users. Of those 500 concurrent users, there will probably at most be 10-20 concurrent requests being made at a time.
That means, you are really only establishing about 10-20 concurrent requests.
As others mentioned, you have nothing to worry about in that department.
I would solve this in this way:
from pyspark.sql import SparkSession
df_1.createOrReplaceTempView("tab_1")
df_2.createOrReplaceTempView("tab_2")
df_concat=spark.sql("select tab_1.id,tab_1.uniform,tab_1.normal,tab_2.normal_2 from tab_1 tab_1 left join tab_2 tab_2 on tab_1.uniform=tab_2.uniform\
union\
select tab_2.id,tab_2.uniform,tab_1.normal,tab_2.normal_2 from tab_2 tab_2 left join tab_1 tab_1 on tab_1.uniform=tab_2.uniform")
df_concat.show()
This may be the good solution for you: change the code like this very little change
.box{
position: relative;
}
.box:hover .hidden{
opacity: 1;
width:500px;
}
.box .hidden{
background: yellow;
height: 334px;
position: absolute;
top: 0;
left: 0;
width: 0;
opacity: 0;
transition: all 1s ease;
}
See demo here
If you already use modules in your app, you can use escape-html module.
import escapeHtml from 'escape-html';
const unsafeString = '<script>alert("XSS");</script>';
const safeString = escapeHtml(unsafeString);
Try using the ASCII code for those values:
^([a-zA-Z0-9 .\x26\x27-]+)$
\x26
= &
\x27
= '
The format is \xnn
where nn is the two-digit hexadecimal character code. You could also use \unnnn
to specify a four-digit hex character code for the Unicode character.
There may be other potential solutions out there (I am still looking) but thus far in my search for the same functionality, I have only found http://www.maxivista.com/ . As far as I can tell through, it only supports a dual monitor, not multiple.
The first case is done using the insert()
method:
_sb.insert(0, "Hello ");
The latter case can be done using the overloaded + operator on Strings. This uses a StringBuilder behind the scenes:
String s2 = "Hello " + _s;
make these changes in your div's style
z-index:100;
some higher value makes sure that this element is above allposition:fixed;
this makes sure that even if scrolling is done, div lies on top and always visible
I realised that I hadn't run/built my framework with the Generic Device
, which strangely lead to these issues. I just put the framework back in and it worked.
This is one way to do it:
SQL> set serveroutput on
SQL> CREATE OR REPLACE TYPE MyType AS VARRAY(200) OF VARCHAR2(50);
2 /
Type created
SQL> CREATE OR REPLACE PROCEDURE testing (t_in MyType) IS
2 BEGIN
3 FOR i IN 1..t_in.count LOOP
4 dbms_output.put_line(t_in(i));
5 END LOOP;
6 END;
7 /
Procedure created
SQL> DECLARE
2 v_t MyType;
3 BEGIN
4 v_t := MyType();
5 v_t.EXTEND(10);
6 v_t(1) := 'this is a test';
7 v_t(2) := 'A second test line';
8 testing(v_t);
9 END;
10 /
this is a test
A second test line
To expand on my comment to @dcp's answer, here's how you could implement the solution proposed there if you wanted to use an associative array:
SQL> CREATE OR REPLACE PACKAGE p IS
2 TYPE p_type IS TABLE OF VARCHAR2(50) INDEX BY BINARY_INTEGER;
3
4 PROCEDURE pp (inp p_type);
5 END p;
6 /
Package created
SQL> CREATE OR REPLACE PACKAGE BODY p IS
2 PROCEDURE pp (inp p_type) IS
3 BEGIN
4 FOR i IN 1..inp.count LOOP
5 dbms_output.put_line(inp(i));
6 END LOOP;
7 END pp;
8 END p;
9 /
Package body created
SQL> DECLARE
2 v_t p.p_type;
3 BEGIN
4 v_t(1) := 'this is a test of p';
5 v_t(2) := 'A second test line for p';
6 p.pp(v_t);
7 END;
8 /
this is a test of p
A second test line for p
PL/SQL procedure successfully completed
SQL>
This trades creating a standalone Oracle TYPE (which cannot be an associative array) with requiring the definition of a package that can be seen by all in order that the TYPE it defines there can be used by all.
JSON doesn't require you to do that, it allows you to do that. It also allows you to use "\u0061" for "A", but it's not required. Allowing \/
helps when embedding JSON in a <script>
tag, which doesn't allow </
inside strings, like Seb points out.
Some of Microsoft's ASP.NET Ajax/JSON API's use this loophole to add extra information, e.g., a datetime will be sent as "\/Date(milliseconds)\/"
. (Yuck)
Here is an example using css3:
CSS:
html, body {
height: 100%;
margin: 0;
}
#wrap {
padding: 10px;
min-height: -webkit-calc(100% - 100px); /* Chrome */
min-height: -moz-calc(100% - 100px); /* Firefox */
min-height: calc(100% - 100px); /* native */
}
.footer {
position: relative;
clear:both;
}
HTML:
<div id="wrap">
body content....
</div>
<footer class="footer">
footer content....
</footer>
Update
As @Martin pointed, the ´position: relative´ is not mandatory on the .footer
element, the same for clear:both
. These properties are only there as an example. So, the minimum css necessary to stick the footer on the bottom should be:
html, body {
height: 100%;
margin: 0;
}
#wrap {
min-height: -webkit-calc(100% - 100px); /* Chrome */
min-height: -moz-calc(100% - 100px); /* Firefox */
min-height: calc(100% - 100px); /* native */
}
Also, there is an excellent article at css-tricks showing different ways to do this: https://css-tricks.com/couple-takes-sticky-footer/
What about this one:
final BooleanWrapper condition = new BooleanWrapper();
someObjects.forEach(obj -> {
if (condition.ok()) {
// YOUR CODE to control
condition.stop();
}
});
Where BooleanWrapper
is a class you must implement to control the flow.
There are 10 events in ASP.NET page life cycle, and the sequence is:
Below is a pictorial view of ASP.NET Page life cycle with what kind of code is expected in that event. I suggest you read this article I wrote on the ASP.NET Page life cycle, which explains each of the 10 events in detail and when to use them.
Image source: my own article at https://www.c-sharpcorner.com/uploadfile/shivprasadk/Asp-Net-application-and-page-life-cycle/ from 19 April 2010
If you do not care so much about efficiency, you could rely on numpy's array indexing to make it elegant:
a = ['123', 'abc', 456]
order = [2, 0, 1]
a2 = list( np.array(a, dtype=object)[order] )
With dates (and times) many things become simpler if you use >= start AND < end
.
For example:
SELECT
user_id
FROM
user_logs
WHERE
login_date >= '2014-02-01'
AND login_date < '2014-03-01'
In this case you still need to calculate the start date of the month you need, but that should be straight forward in any number of ways.
The end date is also simplified; just add exactly one month. No messing about with 28th, 30th, 31st, etc.
This structure also has the advantage of being able to maintain use of indexes.
Many people may suggest a form such as the following, but they do not use indexes:
WHERE
DATEPART('year', login_date) = 2014
AND DATEPART('month', login_date) = 2
This involves calculating the conditions for every single row in the table (a scan) and not using index to find the range of rows that will match (a range-seek).
If you use yum search you can find the python dev package for your version of python.
For me I was using python 3.5. I ran the following
yum search python | grep devel
Which returned the following
I was then able to install the correct package for my version of python with the following cmd.
sudo yum install python35u-devel.x86_64
This works on centos for ubuntu or debian you would need to use apt-get
I believe this is exactly what you're looking for:
http://www.highcharts.com/demo/dynamic-update
Open source (although a license is required for commercial websites), cross device/browser, fast.
The reason that you get the 404 File Not Found
error, is that your path to CSS given as a value to the href
attribute is missing context path.
An HTTP request URL contains the following parts:
http://[host]:[port][request-path]?[query-string]
The request path is further composed of the following elements:
Context path: A concatenation of a forward slash (/) with the context
root of the servlet's web application. Example: http://host[:port]/context-root[/url-pattern]
Servlet path: The path section that corresponds to the component alias that activated this request. This path starts with a forward slash (/).
Path info: The part of the request path that is not part of the context path or the servlet path.
Read more here.
There are several solutions to your problem, here are some of them:
<c:url>
tag from JSTLIn my Java web applications I usually used <c:url>
tag from JSTL when defining the path to CSS/JavaScript/image and other static resources. By doing so you can be sure that those resources are referenced always relative to the application context (context path).
If you say, that your CSS is located inside WebContent folder, then this should work:
<link type="text/css" rel="stylesheet" href="<c:url value="/globalCSS.css" />" />
The reason why it works is explained in the "JavaServer Pages™ Standard Tag Library" version 1.2 specification chapter 7.5 (emphasis mine):
7.5 <c:url>
Builds a URL with the proper rewriting rules applied.
...
The URL must be either an absolute URL starting with a scheme (e.g. "http:// server/context/page.jsp") or a relative URL as defined by JSP 1.2 in JSP.2.2.1 "Relative URL Specification". As a consequence, an implementation must prepend the context path to a URL that starts with a slash (e.g. "/page2.jsp") so that such URLs can be properly interpreted by a client browser.
NOTE
Don't forget to use Taglib directive in your JSP to be able to reference JSTL tags. Also see an example JSP page here.
An alternative solution is using Expression Language (EL) to add application context:
<link type="text/css" rel="stylesheet" href="${pageContext.request.contextPath}/globalCSS.css" />
Here we have retrieved the context path from the request object. And to access the request object we have used the pageContext implicit object.
<c:set>
tag from JSTLDISCLAIMER
The idea of this solution was taken from here.
To make accessing the context path more compact than in the solution ?2, you can first use the JSTL <c:set>
tag, that sets the value of an EL variable or the property of an EL variable in any of the JSP scopes (page, request, session, or application) for later access.
<c:set var="root" value="${pageContext.request.contextPath}"/>
...
<link type="text/css" rel="stylesheet" href="${root}/globalCSS.css" />
IMPORTANT NOTE
By default, in order to set the variable in such manner, the JSP that contains this set tag must be accessed at least once (including in case of setting the value in the application scope using scope attribute, like <c:set var="foo" value="bar" scope="application" />
), before using this new variable. For instance, you can have several JSP files where you need this variable. So you must ether a) both set the new variable holding context path in the application scope AND access this JSP first, before using this variable in other JSP files, or b) set this context path holding variable in EVERY JSP file, where you need to access to it.
The more effective way to make accessing the context path more compact is to set a variable that will hold the context path and store it in the application scope using a Listener. This solution is similar to solution ?3, but the benefit is that now the variable holding context path is set right at the start of the web application and is available application wide, no need for additional steps.
We need a class that implements ServletContextListener interface. Here is an example of such class:
package com.example.listener;
import javax.servlet.ServletContext;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import javax.servlet.annotation.WebListener;
@WebListener
public class AppContextListener implements ServletContextListener {
@Override
public void contextInitialized(ServletContextEvent event) {
ServletContext sc = event.getServletContext();
sc.setAttribute("ctx", sc.getContextPath());
}
@Override
public void contextDestroyed(ServletContextEvent event) {}
}
Now in a JSP we can access this global variable using EL:
<link type="text/css" rel="stylesheet" href="${ctx}/globalCSS.css" />
NOTE
@WebListener annotation is available since Servlet version 3.0. If you use a servlet container or application server that supports older Servlet specifications, remove the @WebServlet annotation and instead configure the listener in the deployment descriptor (web.xml). Here is an example of web.xml file for the container that supports maximum Servlet version 2.5 (other configurations are omitted for the sake of brevity):
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
version="2.5">
...
<listener>
<listener-class>com.example.listener.AppContextListener</listener-class>
</listener>
...
</webapp>
As suggested by user @gavenkoa you can also use scriptlets like this:
<%= request.getContextPath() %>
For such a small thing it is probably OK, just note that generally the use of scriptlets in JSP is discouraged.
I personally prefer either the first solution (used it in my previous projects most of the time) or the second, as they are most clear, intuitive and unambiguous (IMHO). But you choose whatever suits you most.
You can deploy your web app as the default application (i.e. in the default root context), so it can be accessed without specifying context path. For more info read the "Update" section here.
Potentially its easiest to write this in Java
import javax.management.*;
import javax.management.remote.*;
public class JmxInvoke {
public static void main(String... args) throws Exception {
JMXConnectorFactory.connect(new JMXServiceURL(args[0]))
.getMBeanServerConnection().invoke(new ObjectName(args[1]), args[2], new Object[]{}, new String[]{});
}
}
This would compile to a single .class and needs no dependencies in server or any complicated maven packaging.
call it with
javac JmxInvoke.java
java -cp . JmxInvoke [url] [beanName] [method]
update as you loading contents dynamically so you use.
$(document).on('click', 'span', function () {
alert(this.id);
});
old code
$('span').click(function(){
alert(this.id);
});
or you can use .on
$('span').on('click', function () {
alert(this.id);
});
this
refers to current span element clicked
this.id
will give the id
of the current span clicked
Other answers here are correct: is
is used for identity comparison, while ==
is used for equality comparison. Since what you care about is equality (the two strings should contain the same characters), in this case the is
operator is simply wrong and you should be using ==
instead.
The reason is
works interactively is that (most) string literals are interned by default. From Wikipedia:
Interned strings speed up string comparisons, which are sometimes a performance bottleneck in applications (such as compilers and dynamic programming language runtimes) that rely heavily on hash tables with string keys. Without interning, checking that two different strings are equal involves examining every character of both strings. This is slow for several reasons: it is inherently O(n) in the length of the strings; it typically requires reads from several regions of memory, which take time; and the reads fills up the processor cache, meaning there is less cache available for other needs. With interned strings, a simple object identity test suffices after the original intern operation; this is typically implemented as a pointer equality test, normally just a single machine instruction with no memory reference at all.
So, when you have two string literals (words that are literally typed into your program source code, surrounded by quotation marks) in your program that have the same value, the Python compiler will automatically intern the strings, making them both stored at the same memory location. (Note that this doesn't always happen, and the rules for when this happens are quite convoluted, so please don't rely on this behavior in production code!)
Since in your interactive session both strings are actually stored in the same memory location, they have the same identity, so the is
operator works as expected. But if you construct a string by some other method (even if that string contains exactly the same characters), then the string may be equal, but it is not the same string -- that is, it has a different identity, because it is stored in a different place in memory.
If you are on xampp and using phpMyadmin to import large sql files and you have increased max_execution time, max file upload limit and everything needed And If none of the above answers work for you come here
Go to your xampp folder, in my case here is the relative path to the file that I need to modify: C:\xampp\phpMyAdmin\libraries\config.default.php
/**
* maximum execution time in seconds (0 for no limit)
*
* @global integer $cfg['ExecTimeLimit']
* by defautlt 300 is the value
* change it to 0 for unlimited
* time is seconds
* Line 709 for me
*/
$cfg['ExecTimeLimit'] = 0;
To remove all OIDs from your database tables, you can use this Linux script:
First, login as PostgreSQL superuser:
sudo su postgres
Now run this script, changing YOUR_DATABASE_NAME with you database name:
for tbl in `psql -qAt -c "select schemaname || '.' || tablename from pg_tables WHERE schemaname <> 'pg_catalog' AND schemaname <> 'information_schema';" YOUR_DATABASE_NAME` ; do psql -c "alter table $tbl SET WITHOUT OIDS" YOUR_DATABASE_NAME ; done
I used this script to remove all my OIDs, since Npgsql 3.0 doesn't work with this, and it isn't important to PostgreSQL anymore.
Try...
body {
margin: 0;
padding: 0;
}
Because of browsers using different default stylesheets, some people recommend a reset stylesheet such as Eric Meyer's Reset Reloaded.
In a translation unit within the same namespace, usually at the top:
// foo.h
struct foo
{
static const std::string s;
};
// foo.cpp
const std::string foo::s = "thingadongdong"; // this is where it lives
// bar.h
namespace baz
{
struct bar
{
static const float f;
};
}
// bar.cpp
namespace baz
{
const float bar::f = 3.1415926535;
}
Use a JSON parser. There are plenty of JSON parsers written in Java.
Look under the Java section and find one you like.
$("#myselect option:contains('YourTextHere')").val();
will return the value of the first option containing your text description. Tested this and works.
Given that the XML field is named 'xmlField'...
SELECT
[xmlField].value('(/person//firstName/node())[1]', 'nvarchar(max)') as FirstName,
[xmlField].value('(/person//lastName/node())[1]', 'nvarchar(max)') as LastName
FROM [myTable]
Quoted from https://developer.mozilla.org/en/DOM/element.click
The click method is intended to be used with INPUT elements of type button, checkbox, radio, reset or submit. Gecko does not implement the click method on other elements that might be expected to respond to mouse–clicks such as links (A elements), nor will it necessarily fire the click event of other elements.
Non–Gecko DOMs may behave differently.
Unfortunately it sounds like you have already discovered the best solution to your problem.
As a side note, I agree that your solution seems less than ideal, but if you encapsulate the functionality inside a method (much like JQuery would do) it is not so bad.
I think the current right way to do this is by pip
like Pramod comments
pip install beautifulsoup4
because of last changes in Python, see discussion here. This was not so in the past.
All the above mentioned solutions to the problem are correct.
But if you are using lazy loading, FormsModule
needs to be imported in the child module which has forms in it. Adding it in app.module.ts
won't help.
This is another sh1tty Google product with a terrible implemenation.
The problem I have found with this is that if you restrict an API key by IP address, it wont work... BUT far be it from Google to make this point clear... It wasn't until troubleshooting and researching I found:
API keys with an IP addresses restriction can only be used with web services that are intended for use from the server side (such as the Geocoding API and other Web Service APIs). Most of these web services have equivalent services within the Maps JavaScript API (for example, see the Geocoding Service). To use the Maps JavaScript API client side services, you will need to create a separate API key which can be secured with an HTTP referrers restriction (see Restricting an API key).
https://developers.google.com/maps/documentation/javascript/error-messages
FFS Google... Pretty important piece of information that would be good to clarify on setup...
DataRow[] dtr=dtPerson.select("name=Joe");
foreach(var drow in dtr)
{
drow.delete();
}
dtperson.AcceptChanges();
I hope it will help you
This worked for me in chrome, jquery.fileupload.js version is 5.42.3
add: function(e, data) {
var uploadErrors = [];
var ext = data.originalFiles[0].name.split('.').pop().toLowerCase();
if($.inArray(ext, ['odt','docx']) == -1) {
uploadErrors.push('Not an accepted file type');
}
if(data.originalFiles[0].size > (2*1024*1024)) {//2 MB
uploadErrors.push('Filesize is too big');
}
if(uploadErrors.length > 0) {
alert(uploadErrors.join("\n"));
} else {
data.submit();
}
},
If Sheets("Sheet1").OLEObjects("CheckBox1").Object.Value = True Then
I believe Tim is right. You have a Form Control. For that you have to use this
If ActiveSheet.Shapes("Check Box 1").ControlFormat.Value = 1 Then
JSONObject responseDetailsJson = new JSONObject();
JSONArray jsonArray = new JSONArray();
List<String> ls =new ArrayList<String>();
for(product cj:cities.getList()) {
ls.add(cj);
JSONObject formDetailsJson = new JSONObject();
formDetailsJson.put("id", cj.id);
formDetailsJson.put("name", cj.name);
jsonArray.put(formDetailsJson);
}
responseDetailsJson.put("Cities", jsonArray);
return responseDetailsJson;
I tried the examples above, but none worked as described. However, I have a solution that is combined from some of the examples:
public static Form1 gui;
public Form1()
{
InitializeComponent();
gui = this;
comms = new Comms();
}
public Comms()
{
Form1.gui.tsStatus.Text = "test";
Form1.gui.addLogLine("Hello from Comms class");
Form1.gui.bn_connect.Text = "Comms";
}
This works so long as you're not using threads. Using threads would require more code and was not needed for my task.
For me, I tried manage app execution aliases
and got an error that python3 is not a command so for that, I used py
instead of python3
and it worked
I don't know why this is happening but It worked for me
I know its been a while since the original post but I like using CTE's and this worked for me:
WITH cte_table_a
AS
(
SELECT [id] [id]
, MAX([value]) [value]
FROM table_a
GROUP BY [id]
)
UPDATE table_b
SET table_b.code = CASE WHEN cte_table_a.[value] IS NOT NULL THEN cte_table_a.[value] ELSE 124 END
FROM table_b
LEFT OUTER JOIN cte_table_a
ON table_b.id = cte_table_a.id
For SQL Server 2012 and later versions, the best method is @MajidBasirati's answer.
I also loved @CarlosToledo's answer, it's not limited to any SQL Server version but it's missing Order By Clauses. Without them, it may return wrong results.
For SQL Server 2008 and later I would use Common Table Expressions for better performance.
-- This example omits first 10 records and select next 5 records
;WITH MyCTE(Id) as
(
SELECT TOP (10) Id
FROM MY_TABLE
ORDER BY Id
)
SELECT TOP (5) *
FROM MY_TABLE
INNER JOIN MyCTE ON (MyCTE.Id <> MY_TABLE.Id)
ORDER BY Id
Use FQL instead, its a like SQL but for Facebook's data tables and easily covers data query you'de like to make. You won't have to use all of those /xx/xxx/xx calls, just know the tables and columns you are intereseted in.
$myQuery = "SELECT uid2 FROM friend WHERE uid1=me()";
$facebook->api( "/fql?q=" . urlencode($myQuery) )
Great interactive examples at http://developers.facebook.com/docs/reference/fql/
If the checkbox is checked, then the checkbox's value will be passed. Otherwise, the field is not passed in the HTTP post.
if (isset($_POST['mycheckbox'])) {
echo "checked!";
}
TensorFlow 2.3.0 works fine with CUDA 11. But you have to install tf-nightly-gpu (after you installed tensorflow and CUDA 11): https://pypi.org/project/tf-nightly-gpu/
Try:
pip install tf-nightly-gpu
Afterwards you'll get the message in your console:
I tensorflow/stream_executor/platform/default/dso_loader.cc:48] Successfully opened dynamic library cudart64_110.dll
A bin is range that represents the width of a single bar of the histogram along the X-axis. You could also call this the interval. (Wikipedia defines them more formally as "disjoint categories".)
The Numpy histogram
function doesn't draw the histogram, but it computes the occurrences of input data that fall within each bin, which in turns determines the area (not necessarily the height if the bins aren't of equal width) of each bar.
In this example:
np.histogram([1, 2, 1], bins=[0, 1, 2, 3])
There are 3 bins, for values ranging from 0 to 1 (excl 1.), 1 to 2 (excl. 2) and 2 to 3 (incl. 3), respectively. The way Numpy defines these bins if by giving a list of delimiters ([0, 1, 2, 3]
) in this example, although it also returns the bins in the results, since it can choose them automatically from the input, if none are specified. If bins=5
, for example, it will use 5 bins of equal width spread between the minimum input value and the maximum input value.
The input values are 1, 2 and 1. Therefore, bin "1 to 2" contains two occurrences (the two 1
values), and bin "2 to 3" contains one occurrence (the 2
). These results are in the first item in the returned tuple: array([0, 2, 1])
.
Since the bins here are of equal width, you can use the number of occurrences for the height of each bar. When drawn, you would have:
You can plot this directly with Matplotlib (its hist
function also returns the bins and the values):
>>> import matplotlib.pyplot as plt
>>> plt.hist([1, 2, 1], bins=[0, 1, 2, 3])
(array([0, 2, 1]), array([0, 1, 2, 3]), <a list of 3 Patch objects>)
>>> plt.show()
There is a specification that a lot of drivers support that's called DBRef.
DBRef is a more formal specification for creating references between documents. DBRefs (generally) include a collection name as well as an object id. Most developers only use DBRefs if the collection can change from one document to the next. If your referenced collection will always be the same, the manual references outlined above are more efficient.
Taken from MongoDB Documentation: Data Models > Data Model Reference > Database References
datas.Where((data, index) =>
{
//Your Logic
return false;
}).Any();
In some simple case,my way is using where + false + any
.
It is fater a little than foreach + select((data,index)=>new{data,index})
,and without custom Foreach method.
MyLogic:
- use statement body run your logic.
- because return false,new Enumrable data count is zero.
- use Any() let yeild run.
[RPlotExporter, RankColumn]
public class BenchmarkTest
{
public static IEnumerable<dynamic> TestDatas = Enumerable.Range(1, 10).Select((data, index) => $"item_no_{index}");
[Benchmark]
public static void ToArrayAndFor()
{
var datats = TestDatas.ToArray();
for (int index = 0; index < datats.Length; index++)
{
var result = $"{datats[index]}{index}";
}
}
[Benchmark]
public static void IEnumrableAndForach()
{
var index = 0;
foreach (var item in TestDatas)
{
index++;
var result = $"{item}{index}";
}
}
[Benchmark]
public static void LinqSelectForach()
{
foreach (var item in TestDatas.Select((data, index) => new { index, data }))
{
var result = $"{item.data}{item.index}";
}
}
[Benchmark]
public static void LinqSelectStatementBodyToList()
{
TestDatas.Select((data, index) =>
{
var result = $"{data}{index}";
return true;
}).ToList();
}
[Benchmark]
public static void LinqSelectStatementBodyToArray()
{
TestDatas.Select((data, index) =>
{
var result = $"{data}{index}";
return true;
}).ToArray();
}
[Benchmark]
public static void LinqWhereStatementBodyAny()
{
TestDatas.Where((data, index) =>
{
var result = $"{data}{index}";
return false;
}).Any();
}
}
class Program
{
static void Main(string[] args)
{
var summary = BenchmarkRunner.Run<BenchmarkTest>();
System.Console.Read();
}
}
Method | Mean | Error | StdDev | Rank |
------------------------------- |---------:|----------:|----------:|-----:|
ToArrayAndFor | 4.027 us | 0.0797 us | 0.1241 us | 4 |
IEnumrableAndForach | 3.494 us | 0.0321 us | 0.0285 us | 1 |
LinqSelectForach | 3.842 us | 0.0503 us | 0.0471 us | 3 |
LinqSelectStatementBodyToList | 3.822 us | 0.0416 us | 0.0389 us | 3 |
LinqSelectStatementBodyToArray | 3.857 us | 0.0764 us | 0.0785 us | 3 |
LinqWhereStatementBodyAny | 3.643 us | 0.0693 us | 0.0712 us | 2 |
As Mitch mentioned, backing data up is the best method.
However, it maybe possible to extract the lost data partially depending on the situation or DB server used. For most part, you are out of luck if you don't have any backup.
You don't want to stretch the span in height?
You have the possiblity to affect one or more flex-items to don't stretch the full height of the container.
To affect all flex-items of the container, choose this:
You have to set align-items: flex-start;
to div
and all flex-items of this container get the height of their content.
div {_x000D_
align-items: flex-start;_x000D_
background: tan;_x000D_
display: flex;_x000D_
height: 200px;_x000D_
}_x000D_
span {_x000D_
background: red;_x000D_
}
_x000D_
<div>_x000D_
<span>This is some text.</span>_x000D_
</div>
_x000D_
To affect only a single flex-item, choose this:
If you want to unstretch a single flex-item on the container, you have to set align-self: flex-start;
to this flex-item. All other flex-items of the container aren't affected.
div {_x000D_
display: flex;_x000D_
height: 200px;_x000D_
background: tan;_x000D_
}_x000D_
span.only {_x000D_
background: red;_x000D_
align-self:flex-start;_x000D_
}_x000D_
span {_x000D_
background:green;_x000D_
}
_x000D_
<div>_x000D_
<span class="only">This is some text.</span>_x000D_
<span>This is more text.</span>_x000D_
</div>
_x000D_
Why is this happening to the span
?
The default value of the property align-items
is stretch
. This is the reason why the span
fill the height of the div
.
Difference between baseline
and flex-start
?
If you have some text on the flex-items, with different font-sizes, you can use the baseline of the first line to place the flex-item vertically. A flex-item with a smaller font-size have some space between the container and itself at top. With flex-start
the flex-item will be set to the top of the container (without space).
div {_x000D_
align-items: baseline;_x000D_
background: tan;_x000D_
display: flex;_x000D_
height: 200px;_x000D_
}_x000D_
span {_x000D_
background: red;_x000D_
}_x000D_
span.fontsize {_x000D_
font-size:2em;_x000D_
}
_x000D_
<div>_x000D_
<span class="fontsize">This is some text.</span>_x000D_
<span>This is more text.</span>_x000D_
</div>
_x000D_
You can find more information about the difference between
baseline
andflex-start
here:
What's the difference between flex-start and baseline?
One of the best posts I've ever come across regarding Security as it relates to REST is over at 1 RainDrop. The MySpace API's use OAuth also for security and you have full access to their custom channels in the RestChess code, which I did a lot of exploration with. This was demo'd at Mix and you can find the posting here.
I think it's better to create an interface for that class. And create a unit test using interface.
If it you don't have access to that class, you can create an adapter for that class.
For example:
public class RealClass
{
int DoSomething(string input)
{
// real implementation here
}
}
public interface IRealClassAdapter
{
int DoSomething(string input);
}
public class RealClassAdapter : IRealClassAdapter
{
readonly RealClass _realClass;
public RealClassAdapter() => _realClass = new RealClass();
int DoSomething(string input) => _realClass.DoSomething(input);
}
This way, you can easily create mock for your class using IRealClassAdapter.
Hope it works.
Likewise, I saw this error as a result of too little RAM. I cranked up the RAM on the VM and the error disappeared.
If you want to debug why not use console debug
window.console.debug(jsonObject);
This works for me with Python3 on Linux:
import tkinter as tk
# Create Tk window
root = tk.Tk()
# Add icon from GIF file where my GIF is called 'icon.gif' and
# is in the same directory as this .py file
root.tk.call('wm', 'iconphoto', root._w, tk.PhotoImage(file='icon.gif'))
Just for the purpose of mentioning underscore's find method works in IE with no problem.
This is pretty simple with numpy
, just subtract the arrays:
diffs = array1 - array2
I get:
diffs == array([ 0.1, 0.2, 0.3])
Add OnClientClick="return false;"
,
<asp:button ID="btninsert" runat="server" text="Button" OnClientClick="return false;" />
or in the CodeBehind:
btninsert.Attributes.Add("onclick", "return false;");
I use the following with python 3.8
string4 = f'{string1}{string2}{string3}'
import numpy as np
import matplotlib.pyplot as plt
F = 5.e2 # No. of cycles per second, F = 500 Hz
T = 2.e-3 # Time period, T = 2 ms
Fs = 50.e3 # No. of samples per second, Fs = 50 kHz
Ts = 1./Fs # Sampling interval, Ts = 20 us
N = int(T/Ts) # No. of samples for 2 ms, N = 100
t = np.linspace(0, T, N)
signal = np.sin(2*np.pi*F*t)
plt.plot(t, signal)
plt.xlabel('Time (s)')
plt.ylabel('Voltage (V)')
plt.show()
tabindex HTML attribute indicates if its element can be focused, and if/where it participates in sequential keyboard navigation (usually with the Tab
key). Read MDN Web Docs for full reference.
$( "#division" ).keydown(function(evt) {
evt = evt || window.event;
console.log("keydown: " + evt.keyCode);
});
_x000D_
#division {
width: 90px;
height: 30px;
background: lightgrey;
}
_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="division" tabindex="0"></div>
_x000D_
var el = document.getElementById("division");
el.onkeydown = function(evt) {
evt = evt || window.event;
console.log("keydown: " + evt.keyCode);
};
_x000D_
#division {
width: 90px;
height: 30px;
background: lightgrey;
}
_x000D_
<div id="division" tabindex="0"></div>
_x000D_
Best option I found was http://html2canvas.hertzen.com/
http://jsfiddle.net/nurbsurf/1235emen/
html2canvas(document.body, {
onrendered: function(canvas) {
$("#page").hide();
document.body.appendChild(canvas);
window.print();
$('canvas').remove();
$("#page").show();
}
});
Try this one, it worked for me in Athena:
cast(MyVarcharCol as integer)
--save-dev
saves semver spec into "devDependencies" array in your package descriptor file, --save
saves it into "dependencies" instead.
Remove the Newtonsoft.Json assembly from the project reference and add it again. You probably deleted or replaced the dll by accident.
I faced same problem and tried all the above solution. Sadly nothing work.
This whole game of headers that we are passing. I solved my problem with adding the compression header property. This actually require when you are expecting response in gzip compressed format.
//set the Headers of Soap Client.
$client = new SoapClient($wsdlUrl, array(
'trace' => true,
'keep_alive' => true,
'connection_timeout' => 5000,
'cache_wsdl' => WSDL_CACHE_NONE,
'compression' => SOAP_COMPRESSION_ACCEPT | SOAP_COMPRESSION_GZIP | SOAP_COMPRESSION_DEFLATE,
));
Hope it helps.
Good luck.
Make that variable as transient.Your problem will get solved..
@Column(name="emp_name", nullable=false, length=30)
private transient String empName;
I just came across this page while looking for a set based solution to median. After looking at some of the solutions here, I came up with the following. Hope is helps/works.
DECLARE @test TABLE(
i int identity(1,1),
id int,
score float
)
INSERT INTO @test (id,score) VALUES (1,10)
INSERT INTO @test (id,score) VALUES (1,11)
INSERT INTO @test (id,score) VALUES (1,15)
INSERT INTO @test (id,score) VALUES (1,19)
INSERT INTO @test (id,score) VALUES (1,20)
INSERT INTO @test (id,score) VALUES (2,20)
INSERT INTO @test (id,score) VALUES (2,21)
INSERT INTO @test (id,score) VALUES (2,25)
INSERT INTO @test (id,score) VALUES (2,29)
INSERT INTO @test (id,score) VALUES (2,30)
INSERT INTO @test (id,score) VALUES (3,20)
INSERT INTO @test (id,score) VALUES (3,21)
INSERT INTO @test (id,score) VALUES (3,25)
INSERT INTO @test (id,score) VALUES (3,29)
DECLARE @counts TABLE(
id int,
cnt int
)
INSERT INTO @counts (
id,
cnt
)
SELECT
id,
COUNT(*)
FROM
@test
GROUP BY
id
SELECT
drv.id,
drv.start,
AVG(t.score)
FROM
(
SELECT
MIN(t.i)-1 AS start,
t.id
FROM
@test t
GROUP BY
t.id
) drv
INNER JOIN @test t ON drv.id = t.id
INNER JOIN @counts c ON t.id = c.id
WHERE
t.i = ((c.cnt+1)/2)+drv.start
OR (
t.i = (((c.cnt+1)%2) * ((c.cnt+2)/2))+drv.start
AND ((c.cnt+1)%2) * ((c.cnt+2)/2) <> 0
)
GROUP BY
drv.id,
drv.start
If you want to see output logs from all the services in your terminal.
docker-compose logs -t -f --tail <no of lines>
Eg.: Say you would like to log output of last 5 lines from all service
docker-compose logs -t -f --tail 5
If you wish to log output from specific services then it can be done as below:
docker-compose logs -t -f --tail <no of lines> <name-of-service1> <name-of-service2> ... <name-of-service N>
Usage:
Eg. say you have API and portal services then you can do something like below :
docker-compose logs -t -f --tail 5 portal api
Where 5 represents last 5 lines from both logs.
Ref: https://docs.docker.com/v17.09/engine/admin/logging/view_container_logs/
xcopy "%userprofile%\Desktop\?????????" "D:\Backup\" /s/h/e/k/f/c
should work, assuming that your language setting allows Cyrillic (or you use Unicode fonts in the console).
For reference about the arguments: http://ss64.com/nt/xcopy.html
you could try
if (isValid) {
document.getElementById("endTimeLabel").style.display = "none";
}else {
document.getElementById("endTimeLabel").style.display = "block";
}
alone those lines
Another approach is using UnboundID. Its api is very readable and shorter
Create a Ldap Connection
public static LDAPConnection getConnection() throws LDAPException {
// host, port, username and password
return new LDAPConnection("com.example.local", 389, "[email protected]", "admin");
}
Get filter result
public static List<SearchResultEntry> getResults(LDAPConnection connection, String baseDN, String filter) throws LDAPSearchException {
SearchResult searchResult;
if (connection.isConnected()) {
searchResult = connection.search(baseDN, SearchScope.ONE, filter);
return searchResult.getSearchEntries();
}
return null;
}
Get all Oragnization Units and Containers
String baseDN = "DC=com,DC=example,DC=local";
String filter = "(&(|(objectClass=organizationalUnit)(objectClass=container)))";
LDAPConnection connection = getConnection();
List<SearchResultEntry> results = getResults(connection, baseDN, filter);
Get a specific Organization Unit
String baseDN = "DC=com,DC=example,DC=local";
String dn = "CN=Users,DC=com,DC=example,DC=local";
String filterFormat = "(&(|(objectClass=organizationalUnit)(objectClass=container))(distinguishedName=%s))";
String filter = String.format(filterFormat, dn);
LDAPConnection connection = getConnection();
List<SearchResultEntry> results = getResults(connection, baseDN, filter);
Get all users under an Organizational Unit
String baseDN = "CN=Users,DC=com,DC=example,DC=local";
String filter = "(&(objectClass=user)(!(objectCategory=computer)))";
LDAPConnection connection = getConnection();
List<SearchResultEntry> results = getResults(connection, baseDN, filter);
Get a specific user under an Organization Unit
String baseDN = "CN=Users,DC=com,DC=example,DC=local";
String userDN = "CN=abc,CN=Users,DC=com,DC=example,DC=local";
String filterFormat = "(&(objectClass=user)(distinguishedName=%s))";
String filter = String.format(filterFormat, userDN);
LDAPConnection connection = getConnection();
List<SearchResultEntry> results = getResults(connection, baseDN, filter);
Display result
for (SearchResultEntry e : results) {
System.out.println("name: " + e.getAttributeValue("name"));
}
From this news group posting by Mark Zbikowski himself:
The differences between .CMD and .BAT as far as CMD.EXE is concerned are: With extensions enabled, PATH/APPEND/PROMPT/SET/ASSOC in .CMD files will set ERRORLEVEL regardless of error. .BAT sets ERRORLEVEL only on errors.
In other words, if ERRORLEVEL is set to non-0 and then you run one of those commands, the resulting ERRORLEVEL will be:
Note that with Doxygen release 1.8.0 you can also add Markdown formated pages. For this to work you need to create pages with a .md
or .markdown
extension, and add the following to the config file:
INPUT += your_page.md
FILE_PATTERNS += *.md *.markdown
See http://www.doxygen.nl/manual/markdown.html#md_page_header for details.
.htpasswd entries are HASHES. They are not encrypted passwords. Hashes are designed not to be decryptable. Hence there is no way (unless you bruteforce for a loooong time) to get the password from the .htpasswd file.
What you need to do is apply the same hash algorithm to the password provided to you and compare it to the hash in the .htpasswd file. If the user and hash are the same then you're a go.
To get the current time in the local timezone as a naive datetime object:
from datetime import datetime
naive_dt = datetime.now()
If it doesn't return the expected time then it means that your computer is misconfigured. You should fix it first (it is unrelated to Python).
To get the current time in UTC as a naive datetime object:
naive_utc_dt = datetime.utcnow()
To get the current time as an aware datetime object in Python 3.3+:
from datetime import datetime, timezone
utc_dt = datetime.now(timezone.utc) # UTC time
dt = utc_dt.astimezone() # local time
To get the current time in the given time zone from the tz database:
import pytz
tz = pytz.timezone('Europe/Berlin')
berlin_now = datetime.now(tz)
It works during DST transitions. It works if the timezone had different UTC offset in the past i.e., it works even if the timezone corresponds to multiple tzinfo objects at different times.
In some SQL databases, VARCHAR will be padded out to its maximum size in order to optimize the offsets, This is to speed up full table scans and indexes.
Because of this, you do not have any space savings by using a VARCHAR(200) compared to a CHAR(200)
You can use Distinct extension method from LINQ
Use numpy.tile
:
>>> tile(array([1,2,3]), (3, 1))
array([[1, 2, 3],
[1, 2, 3],
[1, 2, 3]])
or for repeating columns:
>>> tile(array([[1,2,3]]).transpose(), (1, 3))
array([[1, 1, 1],
[2, 2, 2],
[3, 3, 3]])
Create rounded_btn.xml file in Drawable folder...
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<solid android:color="@color/#FFFFFF"/>
<stroke android:width="1dp"
android:color="@color/#000000"
/>
<padding android:left="1dp"
android:top="1dp"
android:right="1dp"
android:bottom="1dp"
/>
<corners android:bottomRightRadius="5dip" android:bottomLeftRadius="5dip"
android:topLeftRadius="5dip" android:topRightRadius="5dip"/>
</shape>
and use this.xml file as a button background
<Button
android:id="@+id/btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@drawable/rounded_btn"
android:text="Test" />
You can create a class extending ArrayList
class IndividualList extends ArrayList<Individual> {
}
and then create the array
IndividualList[] group = new IndividualList[10];
if it happened when you include opencv header.
I would recommand that change the order of headers.
put the opencv headers just below the standard C++ header.
like this:
#include<iostream>
#include<opencv2/core/core.hpp>
#include<opencv2/highgui/highgui.hpp>
my approach will be (your json example is not well formed.. guess thats only a sample)
jq '.Front[] | [.Name,.Out,.In,.Groups] | join("|")' front.json > output.txt
returns something like this
"new.domain.com-80|8.8.8.8|192.168.2.2:80|192.168.3.29:80 192.168.3.30:80"
"new.domain.com -443|8.8.8.8|192.168.2.2:443|192.168.3.29:443 192.168.3.30:443"
and grep the output with regular expression.
In Java 7 you can now just use Files.probeContentType(path)
.
For those like me, who have reached this thread because they want to serve an html file from linux terminal or want to view it using a terminal command, use these steps:-
1)If you want to view your html using a browser:-
Navigate to the directory containing the html file
If you have chrome installed, Use:-
google-chrome <filename>.html
OR
Use:-
firefox <filename>.html
2)If you want to serve html file and view it using a browser
Navigate to the directory containing the html file
And Simply type the following on the Terminal:-
pushd <filename>.html; python3 -m http.server 9999; popd;
Then click the I.P. address 0.0.0.0:9999 OR localhost:9999 (Whatever is the result after executing the above commands). Or type on the terminal :-
firefox 0.0.0.0:9999
Using the second method, anyone else connected to the same network can also view your file by using the URL:- "0.0.0.0:9999"
I had the same problem while designing a template in Mailjet. Solution of the problem was minified CSS code inside <style>
tags.
Based on the number of views this question has, it looks like a lot of people are visiting this to see how to set up a job that executes a shell script.
These are the steps to execute a shell script in Jenkins:
In the textarea you can either paste a script or indicate how to run an existing script. So you can either say:
#!/bin/bash
echo "hello, today is $(date)" > /tmp/jenkins_test
or just
/path/to/your/script.sh
Click Save.
Now the newly created job should appear in the main page of Jenkins, together with the other ones. Open it and select Build now to see if it works. Once it has finished pick that specific build from the build history and read the Console output to see if everything happened as desired.
You can get more details in the document Create a Jenkins shell script job in GitHub.
Try this!
Client client = ClientBuilder.newClient();
String jsonStr = client
.target("http:....")
.request(MediaType.APPLICATION_JSON)
.header("WM_SVC.NAME", "RegistryService")
.header("WM_QOS.CORRELATION_ID", "d1f0c0d2-2cf4-497b-b630-06d609d987b0")
.get(String.class);
P.S You can add any number of headers like this!
I've been searching for a way to split a string by a separator of any length, so I started writing it from scratch, as existing solutions didn't suit me.
Here is my little algorithm, using only STL:
//use like this
//std::vector<std::wstring> vec = Split<std::wstring> (L"Hello##world##!", L"##");
template <typename valueType>
static std::vector <valueType> Split (valueType text, const valueType& delimiter)
{
std::vector <valueType> tokens;
size_t pos = 0;
valueType token;
while ((pos = text.find(delimiter)) != valueType::npos)
{
token = text.substr(0, pos);
tokens.push_back (token);
text.erase(0, pos + delimiter.length());
}
tokens.push_back (text);
return tokens;
}
It can be used with separator of any length and form, as far as I've tested. Instantiate with either string or wstring type.
All the algorithm does is it searches for the delimiter, gets the part of the string that is up to the delimiter, deletes the delimiter and searches again until it finds it no more.
Hope it helps.
In general, these answer the question: How to change your user settings file? But the question I wanted answered was how to change my local maven repository location. The answer is that you have to edit settings.xml. If the file does not exist, you have to create it. You set or change the location of the file at Window > Preferences > Maven > User Settings. It's the User Settings entry at
It's the second file input; the first with information in it.
If it's not clear, [redacted]
should be replaced with the local file path to your .m2 folder.
If you click the "open file" link, it opens the settings.xml file for editing in Eclipse.
If you have no settings.xml file yet, the following will set the local repository to the Windows 10 default value for a user named mdfst13:
<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0
https://maven.apache.org/xsd/settings-1.0.0.xsd">
<localRepository>C:\Users\mdfst13\.m2\repository</localRepository>
</settings>
You should set this to a value appropriate to your system. I haven't tested it, but I suspect that in Linux, the default value would be /home/mdfst13/.m2/repository
. And of course, you probably don't want to set it to the default value. If you are reading this, you probably want to set it to some other value. You could just delete it if you wanted the default.
Credit to this comment by @ejaenv for the name of the element in the settings file: <localRepository>
. See Maven — Settings Reference for more information.
Credit to @Ajinkya's answer for specifying the location of the User Settings value in Eclipse Photon.
If you already have a settings.xml file, you should merge this into your existing file. I.e. <settings
and <localRepository>
should only appear once in the file, and you probably want to retain any settings already there. Or to say that another way, edit any existing local repository entry if it exists or just add that line to the file if it doesn't.
I had to restart Eclipse for it to load data into the new repository. Neither "Update Settings" nor "Reindex" was sufficient.
@Entity(tableName = "user")
data class User(
@PrimaryKey(autoGenerate = true) var id: Int?,
var name: String,
var dob: String,
var address: String,
var gender: String
)
{
constructor():this(null,
"","","","")
}
Use the serialize method:
$.ajax({
...
data: $("#registerSubmit").serialize(),
...
})
Docs: serialize()
I found many answers but not one is simple... I hope this will help you...
try{
Intent intent = new Intent(CurrentActivity.this, NewActivity.class);
startActivity(intent);
} finally {
finish();
}
so, Very simple logic is here, as we know that in java we write code that has some chances of exception in a try block and handle that exception in catch block but in finally block we write code that has to be executed in any cost (Either the exception comes or not).
First the quick and dirty way, and second the precise way (recognizing daylight's savings or not).
import time
time.ctime() # 'Mon Oct 18 13:35:29 2010'
time.strftime('%l:%M%p %Z on %b %d, %Y') # ' 1:36PM EDT on Oct 18, 2010'
time.strftime('%l:%M%p %z on %b %d, %Y') # ' 1:36PM EST on Oct 18, 2010'
I have Notepad++ 5.3.1 (UNICODE). I haven't done any magic and it works fine for me as described by you.
Maybe it depends on the (programming/markup/...) "Language"?
.a
files are created with the ar
utility, and they are libraries. To use it with gcc
, collect all .a files
in a lib/
folder and then link with -L lib/
and -l<name of specific library>
.
Collection of all .a files into lib/
is optional. Doing so makes for better looking directories with nice separation of code and libraries, IMHO.
In following solution, table occupies 100% of the parent container, no absolute sizes required. It's pure CSS, flex layout is used.
Here is how it looks:
Possible disadvantages:
HTML (shortened):
<div class="table-container">
<table>
<thead>
<tr>
<th>head1</th>
<th>head2</th>
<th>head3</th>
<th>head4</th>
</tr>
</thead>
<tbody>
<tr>
<td>content1</td>
<td>content2</td>
<td>content3</td>
<td>content4</td>
</tr>
<tr>
<td>content1</td>
<td>content2</td>
<td>content3</td>
<td>content4</td>
</tr>
...
</tbody>
</table>
</div>
CSS, with some decorations omitted for clarity:
.table-container {
height: 10em;
}
table {
display: flex;
flex-flow: column;
height: 100%;
width: 100%;
}
table thead {
/* head takes the height it requires,
and it's not scaled when table is resized */
flex: 0 0 auto;
width: calc(100% - 0.9em);
}
table tbody {
/* body takes all the remaining available space */
flex: 1 1 auto;
display: block;
overflow-y: scroll;
}
table tbody tr {
width: 100%;
}
table thead, table tbody tr {
display: table;
table-layout: fixed;
}
Same code in LESS so you can mix it in:
.table-scrollable() {
@scrollbar-width: 0.9em;
display: flex;
flex-flow: column;
thead,
tbody tr {
display: table;
table-layout: fixed;
}
thead {
flex: 0 0 auto;
width: ~"calc(100% - @{scrollbar-width})";
}
tbody {
display: block;
flex: 1 1 auto;
overflow-y: scroll;
tr {
width: 100%;
}
}
}
CREATE FUNCTION dbo.UFN_GET_SQL_SEVER_VERSION
(
)
RETURNS sysname
AS
BEGIN
DECLARE @ServerVersion sysname, @ProductVersion sysname, @ProductLevel sysname, @Edition sysname;
SELECT @ProductVersion = CONVERT(sysname, SERVERPROPERTY('ProductVersion')),
@ProductLevel = CONVERT(sysname, SERVERPROPERTY('ProductLevel')),
@Edition = CONVERT(sysname, SERVERPROPERTY ('Edition'));
--see: http://support2.microsoft.com/kb/321185
SELECT @ServerVersion =
CASE
WHEN @ProductVersion LIKE '8.00.%' THEN 'Microsoft SQL Server 2000'
WHEN @ProductVersion LIKE '9.00.%' THEN 'Microsoft SQL Server 2005'
WHEN @ProductVersion LIKE '10.00.%' THEN 'Microsoft SQL Server 2008'
WHEN @ProductVersion LIKE '10.50.%' THEN 'Microsoft SQL Server 2008 R2'
WHEN @ProductVersion LIKE '11.0%' THEN 'Microsoft SQL Server 2012'
WHEN @ProductVersion LIKE '12.0%' THEN 'Microsoft SQL Server 2014'
END
RETURN @ServerVersion + N' ('+@ProductLevel + N'), ' + @Edition + ' - ' + @ProductVersion;
END
GO
I got this issue in a non-maven project, two depended jar each contained a slf4j. I solved by remove one depended jar, compile the project(which of course getting failure) then add the removed one back.
Not sure if that's useful, but, if you need a long URL from desktop browser to be opened in mobile browser, you can send SMS with that URL and open directly from message app.
1.Install angular-animate
2.Add the animation effect to the class ng-enter
for page entering animation and the class ng-leave
for page exiting animation
for reference: this page has a free resource on angular view transition https://e21code.herokuapp.com/angularjs-page-transition/
Unfortunately there is no hung state for a process. Now hung can be deadlock. This is block state. The threads in the process are blocked. The other things could be live lock where the process is running but doing the same thing again and again. This process is in running state. So as you can see there is no definite hung state. As suggested you can use the top command to see if the process is using 100% CPU or lot of memory.
<span>You have {{products|length}} products</span>
You can also use this syntax in expressions like
{% if products|length > 1 %}
jinja2's builtin filters are documented here; and specifically, as you've already found, length
(and its synonym count
) is documented to:
Return the number of items of a sequence or mapping.
So, again as you've found, {{products|count}}
(or equivalently {{products|length}}
) in your template will give the "number of products" ("length of list")
PLEASE NOTE: The documentation says:
filter
is a JavaScript extension to the ECMA-262 standard; as such it may not be present in other implementations of the standard. You can work around this by inserting the following code at the beginning of your scripts, allowing use of filter in ECMA-262 implementations which do not natively support it. This algorithm is exactly the one specified in ECMA-262, 5th edition, assuming that fn.call evaluates to the original value of Function.prototype.call, and that Array.prototype.push has its original value.
So, to avoid some heartache, you may have to add this code to your script At the beginning.
if (!Array.prototype.filter) {
Array.prototype.filter = function (fn, context) {
var i,
value,
result = [],
length;
if (!this || typeof fn !== 'function' || (fn instanceof RegExp)) {
throw new TypeError();
}
length = this.length;
for (i = 0; i < length; i++) {
if (this.hasOwnProperty(i)) {
value = this[i];
if (fn.call(context, value, i, this)) {
result.push(value);
}
}
}
return result;
};
}
Zookeeper is a centralized open-source server for maintaining and managing configuration information, naming conventions and synchronization for distributed cluster environment. Zookeeper helps the distributed systems to reduce their management complexity by providing low latency and high availability. Zookeeper was initially a sub-project for Hadoop but now it's a top level independent project of Apache Software Foundation.
In most cases, when you find yourself using forEach
on a Stream, you should rethink whether you are using the right tool for your job or whether you are using it the right way.
Generally, you should look for an appropriate terminal operation doing what you want to achieve or for an appropriate Collector. Now, there are Collectors for producing Map
s and List
s, but no out of-the-box collector for combining two different collectors, based on a predicate.
Now, this answer contains a collector for combining two collectors. Using this collector, you can achieve the task as
Pair<Map<KeyType, Animal>, List<KeyType>> pair = animalMap.entrySet().stream()
.collect(conditional(entry -> entry.getValue() != null,
Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue),
Collectors.mapping(Map.Entry::getKey, Collectors.toList()) ));
Map<KeyType,Animal> myMap = pair.a;
List<KeyType> myList = pair.b;
But maybe, you can solve this specific task in a simpler way. One of you results matches the input type; it’s the same map just stripped off the entries which map to null
. If your original map is mutable and you don’t need it afterwards, you can just collect the list and remove these keys from the original map as they are mutually exclusive:
List<KeyType> myList=animalMap.entrySet().stream()
.filter(pair -> pair.getValue() == null)
.map(Map.Entry::getKey)
.collect(Collectors.toList());
animalMap.keySet().removeAll(myList);
Note that you can remove mappings to null
even without having the list of the other keys:
animalMap.values().removeIf(Objects::isNull);
or
animalMap.values().removeAll(Collections.singleton(null));
If you can’t (or don’t want to) modify the original map, there is still a solution without a custom collector. As hinted in Alexis C.’s answer, partitioningBy
is going into the right direction, but you may simplify it:
Map<Boolean,Map<KeyType,Animal>> tmp = animalMap.entrySet().stream()
.collect(Collectors.partitioningBy(pair -> pair.getValue() != null,
Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue)));
Map<KeyType,Animal> myMap = tmp.get(true);
List<KeyType> myList = new ArrayList<>(tmp.get(false).keySet());
The bottom line is, don’t forget about ordinary Collection operations, you don’t have to do everything with the new Stream API.
Using AddDays(-1)
worked for me until I tried to cross months. When I tried to subtract 2 days from 2017-01-01 the result was 2016-00-30. It could not handle the month change correctly (though the year seemed to be fine).
I used date = Convert.ToDateTime(date).Subtract(TimeSpan.FromDays(2)).ToString("yyyy-mm-dd");
and have no issues.
From the documentation of InetAddress.getByName(String host)
:
The host name can either be a machine name, such as "java.sun.com", or a textual representation of its IP address. If a literal IP address is supplied, only the validity of the address format is checked.
So you can use it.
As Darin says, you can read from the input stream - but I'd avoid relying on all the data being available in a single go. If you're using .NET 4 this is simple:
MemoryStream target = new MemoryStream();
model.File.InputStream.CopyTo(target);
byte[] data = target.ToArray();
It's easy enough to write the equivalent of CopyTo
in .NET 3.5 if you want. The important part is that you read from HttpPostedFileBase.InputStream
.
For efficient purposes you could check whether the stream returned is already a MemoryStream
:
byte[] data;
using (Stream inputStream = model.File.InputStream)
{
MemoryStream memoryStream = inputStream as MemoryStream;
if (memoryStream == null)
{
memoryStream = new MemoryStream();
inputStream.CopyTo(memoryStream);
}
data = memoryStream.ToArray();
}
None of these works with 'GO' statements. In this code, regardless of whether the severity is 10 or 11, you get the final PRINT statement.
Test Script:
-- =================================
PRINT 'Start Test 1 - RAISERROR'
IF 1 = 1 BEGIN
RAISERROR('Error 1, level 11', 11, 1)
RETURN
END
IF 1 = 1 BEGIN
RAISERROR('Error 2, level 11', 11, 1)
RETURN
END
GO
PRINT 'Test 1 - After GO'
GO
-- =================================
PRINT 'Start Test 2 - Try/Catch'
BEGIN TRY
SELECT (1 / 0) AS CauseError
END TRY
BEGIN CATCH
SELECT ERROR_MESSAGE() AS ErrorMessage
RAISERROR('Error in TRY, level 11', 11, 1)
RETURN
END CATCH
GO
PRINT 'Test 2 - After GO'
GO
Results:
Start Test 1 - RAISERROR
Msg 50000, Level 11, State 1, Line 5
Error 1, level 11
Test 1 - After GO
Start Test 2 - Try/Catch
CauseError
-----------
ErrorMessage
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Divide by zero error encountered.
Msg 50000, Level 11, State 1, Line 10
Error in TRY, level 11
Test 2 - After GO
The only way to make this work is to write the script without GO
statements. Sometimes that's easy. Sometimes it's quite difficult. (Use something like IF @error <> 0 BEGIN ...
.)
Not sure of this is helpful but this what worked for me in Rails 4
Foo.where.not(bar: nil)
After hours of searching and looking for answer, finally I made it!!!!! Code is below :))))
HTML:
<form id="fileinfo" enctype="multipart/form-data" method="post" name="fileinfo">
<label>File to stash:</label>
<input type="file" name="file" required />
</form>
<input type="button" value="Stash the file!"></input>
<div id="output"></div>
jQuery:
$(function(){
$('#uploadBTN').on('click', function(){
var fd = new FormData($("#fileinfo"));
//fd.append("CustomField", "This is some extra data");
$.ajax({
url: 'upload.php',
type: 'POST',
data: fd,
success:function(data){
$('#output').html(data);
},
cache: false,
contentType: false,
processData: false
});
});
});
In the upload.php
file you can access the data passed with $_FILES['file']
.
Thanks everyone for trying to help:)
I took the answer from here (with some changes) MDN
Another thing I like to do is creating an object and then looping thru the object and setting the styles like that because it can be tedious writing every single style one by one.
var bookStyles = {
color: "red",
backgroundColor: "blue",
height: "300px",
width: "200px"
};
let div = document.createElement("div");
for (let style in bookStyles) {
div.style[style] = bookStyles[style];
}
body.appendChild(div);
Here's a version of batty's answer, but this computes the correct inverse. batty's version computes the transpose of the inverse.
// computes the inverse of a matrix m
double det = m(0, 0) * (m(1, 1) * m(2, 2) - m(2, 1) * m(1, 2)) -
m(0, 1) * (m(1, 0) * m(2, 2) - m(1, 2) * m(2, 0)) +
m(0, 2) * (m(1, 0) * m(2, 1) - m(1, 1) * m(2, 0));
double invdet = 1 / det;
Matrix33d minv; // inverse of matrix m
minv(0, 0) = (m(1, 1) * m(2, 2) - m(2, 1) * m(1, 2)) * invdet;
minv(0, 1) = (m(0, 2) * m(2, 1) - m(0, 1) * m(2, 2)) * invdet;
minv(0, 2) = (m(0, 1) * m(1, 2) - m(0, 2) * m(1, 1)) * invdet;
minv(1, 0) = (m(1, 2) * m(2, 0) - m(1, 0) * m(2, 2)) * invdet;
minv(1, 1) = (m(0, 0) * m(2, 2) - m(0, 2) * m(2, 0)) * invdet;
minv(1, 2) = (m(1, 0) * m(0, 2) - m(0, 0) * m(1, 2)) * invdet;
minv(2, 0) = (m(1, 0) * m(2, 1) - m(2, 0) * m(1, 1)) * invdet;
minv(2, 1) = (m(2, 0) * m(0, 1) - m(0, 0) * m(2, 1)) * invdet;
minv(2, 2) = (m(0, 0) * m(1, 1) - m(1, 0) * m(0, 1)) * invdet;
Hashes are a sequence of bits (128 bits, 160 bits, 256 bits, etc., depending on the algorithm). Your column should be binary-typed, not text/character-typed, if MySQL allows it (SQL Server datatype is binary(n)
or varbinary(n)
). You should also salt the hashes. Salts may be text or binary, and you will need a corresponding column.
for empty all input tags such as input,select,textatea etc. run this code
$('#message').val('').change();
Waiting line at a teller/cashier, etc...
A series of orders which must be executed in order.
Any FIFO structure can be implemented as a linked list.
If I understand your question right you are asking what is difference if you register listener callback with $watch
or if you do it with $observe
.
Callback registerd with $watch
is fired when $digest
is executed.
Callback registered with $observe
are called when value changes of attributes that contain interpolation (e.g. attr="{{notJetInterpolated}}"
).
Inside directive you can use both of them on very similar way:
attrs.$observe('attrYouWatch', function() {
// body
});
or
scope.$watch(attrs['attrYouWatch'], function() {
// body
});
We can mock list properly for foreach loop. Please find below code snippet and explanation.
This is my actual class method where I want to create test case by mocking list.
this.nameList
is a list object.
public void setOptions(){
// ....
for (String str : this.nameList) {
str = "-"+str;
}
// ....
}
The foreach loop internally works on iterator, so here we crated mock of iterator.
Mockito framework has facility to return pair of values on particular method call by using Mockito.when().thenReturn()
, i.e. on hasNext()
we pass 1st true and on second call false, so that our loop will continue only two times. On next()
we just return actual return value.
@Test
public void testSetOptions(){
// ...
Iterator<SampleFilter> itr = Mockito.mock(Iterator.class);
Mockito.when(itr.hasNext()).thenReturn(true, false);
Mockito.when(itr.next()).thenReturn(Mockito.any(String.class);
List mockNameList = Mockito.mock(List.class);
Mockito.when(mockNameList.iterator()).thenReturn(itr);
// ...
}
In this way we can avoid sending actual list to test by using mock of list.
In some browsers:
flex:1;
does not equal flex:1 1 0;
flex:1;
= flex:1 1 0n;
(where n is a length unit).
The key point here is that flex-basis requires a length unit.
In Chrome for example flex:1
and flex:1 1 0
produce different results. In most circumstances it may appear that flex:1 1 0;
is working but let's examine what really happens:
Flex basis is ignored and only flex-grow and flex-shrink are applied.
flex:1 1 0;
= flex:1 1;
= flex:1;
This may at first glance appear ok however if the applied unit of the container is nested; expect the unexpected!
Try this example in CHROME
.Wrap{_x000D_
padding:10px;_x000D_
background: #333;_x000D_
}_x000D_
.Flex110x, .Flex1, .Flex110, .Wrap {_x000D_
display: -webkit-flex;_x000D_
display: flex;_x000D_
-webkit-flex-direction: column;_x000D_
flex-direction: column;_x000D_
}_x000D_
.Flex110 {_x000D_
-webkit-flex: 1 1 0;_x000D_
flex: 1 1 0;_x000D_
}_x000D_
.Flex1 {_x000D_
-webkit-flex: 1;_x000D_
flex: 1;_x000D_
}_x000D_
.Flex110x{_x000D_
-webkit-flex: 1 1 0%;_x000D_
flex: 1 1 0%;_x000D_
}
_x000D_
FLEX 1 1 0_x000D_
<div class="Wrap">_x000D_
<div class="Flex110">_x000D_
<input type="submit" name="test1" value="TEST 1">_x000D_
</div>_x000D_
</div>_x000D_
_x000D_
FLEX 1_x000D_
<div class="Wrap">_x000D_
<div class="Flex1">_x000D_
<input type="submit" name="test2" value="TEST 2">_x000D_
</div>_x000D_
</div>_x000D_
_x000D_
FLEX 1 1 0%_x000D_
<div class="Wrap">_x000D_
<div class="Flex110x">_x000D_
<input type="submit" name="test3" value="TEST 3">_x000D_
</div>_x000D_
</div>
_x000D_
It should be noted that this fails because some browsers have failed to adhere to the specification.
Browsers that use the full flex specification:
Latest versions of Chrome seem to have finally rectified this issue but other browsers still have not.
Tested and working in Chrome Ver 74.
This answer is based on the 2nd tip from this blog post: 28 Jupyter Notebook tips, tricks and shortcuts
You can add the following code to the top of your notebook
from IPython.core.interactiveshell import InteractiveShell
InteractiveShell.ast_node_interactivity = "all"
This tells Jupyter to print the results for any variable or statement on it’s own line. So you can then execute a cell solely containing
df1
df2
and it will "print out the beautiful tables for both datasets".
Swift version for both separately:
Swift 3
let versionNumber = Bundle.main.object(forInfoDictionaryKey: "CFBundleShortVersionString") as! String
let buildNumber = Bundle.main.object(forInfoDictionaryKey: "CFBundleVersion") as! String
Swift 2
let versionNumber = NSBundle.mainBundle().objectForInfoDictionaryKey("CFBundleShortVersionString") as! String
let buildNumber = NSBundle.mainBundle().objectForInfoDictionaryKey("CFBundleVersion") as! String
Its included in this repo, check it out: