This answer is not just for C++ since everything mentioned is about the data structures themselves, regardless of language. And, my answer is assuming that you know the basic structure of adjacency lists and matrices.
If memory is your primary concern you can follow this formula for a simple graph that allows loops:
An adjacency matrix occupies n2/8 byte space (one bit per entry).
An adjacency list occupies 8e space, where e is the number of edges (32bit computer).
If we define the density of the graph as d = e/n2 (number of edges divided by the maximum number of edges), we can find the "breakpoint" where a list takes up more memory than a matrix:
8e > n2/8 when d > 1/64
So with these numbers (still 32-bit specific) the breakpoint lands at 1/64. If the density (e/n2) is bigger than 1/64, then a matrix is preferable if you want to save memory.
You can read about this at wikipedia (article on adjacency matrices) and a lot of other sites.
Side note: One can improve the space-efficiency of the adjacency matrix by using a hash table where the keys are pairs of vertices (undirected only).
Adjacency lists are a compact way of representing only existing edges. However, this comes at the cost of possibly slow lookup of specific edges. Since each list is as long as the degree of a vertex the worst case lookup time of checking for a specific edge can become O(n), if the list is unordered. However, looking up the neighbours of a vertex becomes trivial, and for a sparse or small graph the cost of iterating through the adjacency lists might be negligible.
Adjacency matrices on the other hand use more space in order to provide constant lookup time. Since every possible entry exists you can check for the existence of an edge in constant time using indexes. However, neighbour lookup takes O(n) since you need to check all possible neighbours. The obvious space drawback is that for sparse graphs a lot of padding is added. See the memory discussion above for more information on this.
If you're still unsure what to use: Most real-world problems produce sparse and/or large graphs, which are better suited for adjacency list representations. They might seem harder to implement but I assure you they aren't, and when you write a BFS or DFS and want to fetch all neighbours of a node they're just one line of code away. However, note that I'm not promoting adjacency lists in general.
I've just seen this problem myself, Jboss AS7 with jdk1.5.0_09. Update System Property JAVA_HOME to jdk1.7+ to fix (I'm using jdk1.7.0_67).
Binding background image style using a dynamic value from v-for loop could be done like this.
<div v-for="i in items" :key="n"
:style="{backgroundImage: 'url('+require('./assets/cars/'+i.src+'.jpg')+')'}">
</div>
yum update
helped me out. After I had
wget: symbol lookup error: wget: undefined symbol: psl_latest
Yep, Oracle has temporary tables. Here is a link to an AskTom article describing them and here is the official oracle CREATE TABLE documentation.
However, in Oracle, only the data in a temporary table is temporary. The table is a regular object visible to other sessions. It is a bad practice to frequently create and drop temporary tables in Oracle.
CREATE GLOBAL TEMPORARY TABLE today_sales(order_id NUMBER)
ON COMMIT PRESERVE ROWS;
Oracle 18c added private temporary tables, which are single-session in-memory objects. See the documentation for more details. Private temporary tables can be dynamically created and dropped.
CREATE PRIVATE TEMPORARY TABLE ora$ptt_today_sales AS
SELECT * FROM orders WHERE order_date = SYSDATE;
Temporary tables can be useful but they are commonly abused in Oracle. They can often be avoided by combining multiple steps into a single SQL statement using inline views.
If you wish to use postman the right way is to use the headers as such
key: Authorization
value: jwt {token}
as simple as that.
from flask import request
request.headers.get('your-header-name')
request.headers
behaves like a dictionary, so you can also get your header like you would with any dictionary:
request.headers['your-header-name']
In Tomcat 7 you have to add this to tomcat-users.xml (On windows 7 it is located by default installation here: c:\Program Files\Apache Software Foundation\Tomcat 7.0\conf\ )
<?xml version="1.0" encoding="UTF-8"?>
<tomcat-users>
<role rolename="manager-gui"/>
<role rolename="manager-script"/>
<role rolename="manager-jmx"/>
<role rolename="manager-status"/>
<role rolename="admin-gui"/>
<role rolename="admin-script"/>
<user username="admin" password="admin" roles="manager-gui,manager-script,manager-jmx,manager-status,admin-gui,admin-script"/>
</tomcat-users>
NOTE that there shouldn't be ANY spaces between roles for admin, as this list should be comma separated.
So, instead of this (as suggested in some answers:
<user username="admin" password="admin" roles="manager-gui, manager-script, manager-jmx, manager-status, admin-gui, admin-script"/>
it MUST be like this:
<user username="admin" password="admin" roles="manager-gui,manager-script,manager-jmx,manager-status,admin-gui,admin-script"/>
Basically, all Maven is telling you is that certain dependencies in your project are not available in the central maven repository. The default is to look in your local .m2 folder (local repository), and then any configured repositories in your POM, and then the central maven repository. Look at the repositories section of the Maven reference.
The problem is that the project that was checked in didn't configure the POM in such a way that all the dependencies could be found and the project could be built from scratch.
curl -X PUT -T "/path/to/file" "http://myputserver.com/puturl.tmp"
Python 3.7.7
import typing
if isinstance([1, 2, 3, 4, 5] , typing.List):
print("It is a list")
This is an adaptation from my code for you. I was inspired from developpez.com (Look in the page for : "Pour insérer des données, vaut-il mieux passer par un RecordSet ou par une requête de type INSERT ?"). They explain (with a little French). This way is much faster than the one upper. In the example, this way was 37 times faster. Try it.
Const tableName As String = "InvoiceNumbers"
Const columnIdName As String = "??"
Const columnDateName As String = "date"
Dim rsTable As DAO.recordSet
Dim recordId as long
Set rsTable = CurrentDb.OpenRecordset(tableName)
Call rsTable .AddNew
recordId = CLng(rsTable (columnIdName)) ' Save your Id in a variable
rsTable (columnDateName) = Now() ' Store your data
rsTable .Update
recordSet.Close
LeCygne
Here's my twist on it, with a runnable example. Note this will only work in the situation where Id
is unique, and you have duplicate values in other columns.
DECLARE @SampleData AS TABLE (Id int, Duplicate varchar(20))
INSERT INTO @SampleData
SELECT 1, 'ABC' UNION ALL
SELECT 2, 'ABC' UNION ALL
SELECT 3, 'LMN' UNION ALL
SELECT 4, 'XYZ' UNION ALL
SELECT 5, 'XYZ'
DELETE FROM @SampleData WHERE Id IN (
SELECT Id FROM (
SELECT
Id
,ROW_NUMBER() OVER (PARTITION BY [Duplicate] ORDER BY Id) AS [ItemNumber]
-- Change the partition columns to include the ones that make the row distinct
FROM
@SampleData
) a WHERE ItemNumber > 1 -- Keep only the first unique item
)
SELECT * FROM @SampleData
And the results:
Id Duplicate
----------- ---------
1 ABC
3 LMN
4 XYZ
Not sure why that's what I thought of first... definitely not the simplest way to go but it works.
double i = 2+Math.random()*100;
int j = (int)i;
System.out.print(j);
In my case:
Project properties ? Project Facets. Make sure "Dynamic Web Module" is checked. Finally, I enter the version number "2.3" instead of "3.0". After that, the Apache Tomcat 5.5 runtime is listed in the "Runtimes" tab.
The reason csv
doesn't support that is because variable-length lines are not really supported on most filesystems. What you should do instead is collect all the data in lists, then call zip()
on them to transpose them after.
>>> l = [('Result_1', 'Result_2', 'Result_3', 'Result_4'), (1, 2, 3, 4), (5, 6, 7, 8)]
>>> zip(*l)
[('Result_1', 1, 5), ('Result_2', 2, 6), ('Result_3', 3, 7), ('Result_4', 4, 8)]
This work for me, and I hope it will work for you also
Set the LayoutParams for the parent view first:
myTableLayout.setLayoutParams(new TableLayout.LayoutParams(TableLayout.LayoutParams.FILL_PARENT,
TableLayout.LayoutParams.FILL_PARENT));
then set for the TextView (child):
TableLayout.LayoutParams textViewParam = new TableLayout.LayoutParams
(TableLayout.LayoutParams.WRAP_CONTENT,
TableLayout.LayoutParams.WRAP_CONTENT,1f);
//-- set components margins
textViewParam.setMargins(5, 0, 5,0);
myTextView.setLayoutParams(textViewParam);
The pipe, |
, is a special-character in regex (meaning "or") and you'll have to escape it with a \
.
Using your current regex:
\|.*$
I've tried this in Notepad++, as you've mentioned, and it appears to work well.
If your abstract class contains concrete functionality that has business value, then I will usually test it directly by creating a test double that stubs out the abstract data, or by using a mocking framework to do this for me. Which one I choose depends a lot on whether I need to write test-specific implementations of the abstract methods or not.
The most common scenario in which I need to do this is when I'm using the Template Method pattern, such as when I'm building some sort of extensible framework that will be used by a 3rd party. In this case, the abstract class is what defines the algorithm that I want to test, so it makes more sense to test the abstract base than a specific implementation.
However, I think it's important that these tests should focus on the concrete implementations of real business logic only; you shouldn't unit test implementation details of the abstract class because you'll end up with brittle tests.
It's possible to find the element in Dictionary collection by using ContainsKey or TryGetValue as follows:
class Program
{
protected static Dictionary<string, string> _tags = new Dictionary<string,string>();
static void Main(string[] args)
{
string strValue;
_tags.Add("101", "C#");
_tags.Add("102", "ASP.NET");
if (_tags.ContainsKey("101"))
{
strValue = _tags["101"];
Console.WriteLine(strValue);
}
if (_tags.TryGetValue("101", out strValue))
{
Console.WriteLine(strValue);
}
}
}
I needed a function that splits a clob and makes sure the function is usable in sql.
create or replace type vchar_tab is table of varchar2(4000)
/
create or replace function split(
p_list in clob,
p_separator in varchar2 default '|'
) return vchar_tab pipelined is
C_SQL_VCHAR_MAX constant integer:=4000;
C_MAX_AMOUNT constant integer:=28000;
C_SEPARATOR_LEN constant integer:=length(p_separator);
l_amount integer:=C_MAX_AMOUNT;
l_offset integer:=1;
l_buffer varchar2(C_MAX_AMOUNT);
l_list varchar2(32767);
l_index integer;
begin
if p_list is not null then
loop
l_index:=instr(l_list, p_separator);
if l_index > C_SQL_VCHAR_MAX+1 then
raise_application_error(-20000, 'item is too large for sql varchar2: len='||(l_index-1));
elsif l_index > 0 then -- found an item, pipe it
pipe row (substr(l_list, 1, l_index-1));
l_list:=substr(l_list, l_index+C_SEPARATOR_LEN);
elsif length(l_list) > C_SQL_VCHAR_MAX then
raise_application_error(-20001, 'item is too large for sql varchar2: length exceeds '||length(l_list));
elsif l_amount = C_MAX_AMOUNT then -- more to read from the clob
dbms_lob.read(p_list, l_amount, l_offset, l_buffer);
l_list:=l_list||l_buffer;
else -- read through the whole clob
if length(l_list) > 0 then
pipe row (l_list);
end if;
exit;
end if;
end loop;
end if;
return;
exception
when no_data_needed then -- this happens when you don't fetch all records
null;
end;
/
Test:
select *
from table(split('ASDF|IUYT|KJHG|ASYD'));
Just one sentence to say Instruct Internet Explorer to use its latest rendering engine
<meta http-equiv="x-ua-compatible" content="ie=edge">
You can't modify a String in Java. They are immutable. All you can do is create a new string that is substring of the old string, minus the last character.
In some cases a StringBuffer might help you instead.
I'm surprised no one has mentioned the fact that you can mix positional and keyword arguments to do sneaky things like this using *args
and **kwargs
(from this site):
def test_var_kwargs(farg, **kwargs):
print "formal arg:", farg
for key in kwargs:
print "another keyword arg: %s: %s" % (key, kwargs[key])
This allows you to use arbitrary keyword arguments that may have keys you don't want to define upfront.
I hate to add the same function to every UIViewController. By extending UIViewController to support UITextFieldDelegate, you can provide a default behavior of "return pressed".
extension UIViewController: UITextFieldDelegate{
public func textFieldShouldReturn(_ textField: UITextField) -> Bool {
textField.resignFirstResponder()
return true;
}
}
When you create new UIViewController and UITextField, all you have to do is to write one line code in your UIViewController.
override func viewDidLoad() {
super.viewDidLoad()
textField.delegate = self
}
You can even omit this one line code by hooking delegate in Main.storyboard. (Using "ctrl" and drag from UITextField to UIViewController)
I have the same problem with that guy here: mrexcel.com/forum/excel-questions/318115-enablecalculation.html Application.CalculateFull
sold my problem. However I am afraid if this will happen again. I will try not to use EnableCalculation
again.
Steps:
'\r'
is the carriage return character. The main times it would be useful are:
When reading text in binary mode, or which may come from a foreign OS, you'll find (and probably want to discard) it due to CR/LF line-endings from Windows-format text files.
When writing to an interactive terminal on stdout
or stderr
, '\r'
can be used to move the cursor back to the beginning of the line, to overwrite it with new contents. This makes a nice primitive progress indicator.
The example code in your post is definitely a wrong way to use '\r'
. It assumes a carriage return will precede the newline character at the end of a line entered, which is non-portable and only true on Windows. Instead the code should look for '\n'
(newline), and discard any carriage return it finds before the newline. Or, it could use text mode and have the C library handle the translation (but text mode is ugly and probably should not be used).
Recently, I have seen this problem too. Below, you have my solution:
Or it can be a genuine network issue. Restart your network-manager using sudo service network-manager restart
or fix it up
I have just received this error after switching from HTTPS to SSH (for my origin remote). To fix, I simply ran the following command (for each repo):
ssh -T [email protected]
Upon receiving a successful response, I could fetch/push to the repo with ssh.
I took that command from Git's Testing your SSH connection guide, which is part of the greater Connecting to GitHub with with SSH guide.
From the error, I infer that referenceElement
is a dictionary (see repro below). A dictionary cannot be hashed and therefore cannot be used as a key to another dictionary (or itself for that matter!).
>>> d1, d2 = {}, {}
>>> d1[d2] = 1
Traceback (most recent call last):
File "<input>", line 1, in <module>
TypeError: unhashable type: 'dict'
You probably meant either for element in referenceElement.keys()
or for element in json['referenceElement'].keys()
. With more context on what types json
and referenceElement
are and what they contain, we will be able to better help you if neither solution works.
The line (or lines) between the lines beginning <<<<<<<
and ======
here:
<<<<<<< HEAD:file.txt
Hello world
=======
... is what you already had locally - you can tell because HEAD
points to your current branch or commit. The line (or lines) between the lines beginning =======
and >>>>>>>
:
=======
Goodbye
>>>>>>> 77976da35a11db4580b80ae27e8d65caf5208086:file.txt
... is what was introduced by the other (pulled) commit, in this case 77976da35a11
. That is the object name (or "hash", "SHA1sum", etc.) of the commit that was merged into HEAD
. All objects in git, whether they're commits (version), blobs (files), trees (directories) or tags have such an object name, which identifies them uniquely based on their content.
Note that the :after
pseudo-element is a box, which in turn contains the generated image. There is no way to style the image, but you can style the box.
The following is just an idea, and the solution above is more practical.
.pdflink:after {
content: url('/images/pdf.png');
transform: scale(.5);
}
Drawbacks: you need to know the intrinsic dimensions of the image, and it leaves you with some whitespace, which I can't get rid of ATM.
try
total.Text = DateTime.Now.ToString()
or
Dim theDate As DateTime = System.DateTime.Now
total.Text = theDate.ToString()
You declare Start
as an Integer
, while you are trying to put a DateTime
in it, which is not possible.
In my experience it's been a convention thing. I'm not aware of any technical reason to use int over Int32, but it's:
I'm especially fond of that last one. :)
Hey Friends also looks for name use only lowercase then u don't get this error
the library already have Java/Kotlin support, see github.
To simplify I did a class to be used simply, I added it on Encryption library to use it you just do as follow:
Add the gradle library:
compile 'se.simbio.encryption:library:2.0.0'
and use it:
Encryption encryption = Encryption.getDefault("Key", "Salt", new byte[16]);
String encrypted = encryption.encryptOrNull("top secret string");
String decrypted = encryption.decryptOrNull(encrypted);
if you not want add the Encryption library you can just copy the following class to your project. If you are in an android project you need to import android Base64 in this class, if you are in a pure java project you need to add this class manually you can get it here
Encryption.java
package se.simbio.encryption;
import java.io.UnsupportedEncodingException;
import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.security.spec.InvalidKeySpecException;
import java.security.spec.KeySpec;
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.PBEKeySpec;
import javax.crypto.spec.SecretKeySpec;
/**
* A class to make more easy and simple the encrypt routines, this is the core of Encryption library
*/
public class Encryption {
/**
* The Builder used to create the Encryption instance and that contains the information about
* encryption specifications, this instance need to be private and careful managed
*/
private final Builder mBuilder;
/**
* The private and unique constructor, you should use the Encryption.Builder to build your own
* instance or get the default proving just the sensible information about encryption
*/
private Encryption(Builder builder) {
mBuilder = builder;
}
/**
* @return an default encryption instance or {@code null} if occur some Exception, you can
* create yur own Encryption instance using the Encryption.Builder
*/
public static Encryption getDefault(String key, String salt, byte[] iv) {
try {
return Builder.getDefaultBuilder(key, salt, iv).build();
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
return null;
}
}
/**
* Encrypt a String
*
* @param data the String to be encrypted
*
* @return the encrypted String or {@code null} if you send the data as {@code null}
*
* @throws UnsupportedEncodingException if the Builder charset name is not supported or if
* the Builder charset name is not supported
* @throws NoSuchAlgorithmException if the Builder digest algorithm is not available
* or if this has no installed provider that can
* provide the requested by the Builder secret key
* type or it is {@code null}, empty or in an invalid
* format
* @throws NoSuchPaddingException if no installed provider can provide the padding
* scheme in the Builder digest algorithm
* @throws InvalidAlgorithmParameterException if the specified parameters are inappropriate for
* the cipher
* @throws InvalidKeyException if the specified key can not be used to initialize
* the cipher instance
* @throws InvalidKeySpecException if the specified key specification cannot be used
* to generate a secret key
* @throws BadPaddingException if the padding of the data does not match the
* padding scheme
* @throws IllegalBlockSizeException if the size of the resulting bytes is not a
* multiple of the cipher block size
* @throws NullPointerException if the Builder digest algorithm is {@code null} or
* if the specified Builder secret key type is
* {@code null}
* @throws IllegalStateException if the cipher instance is not initialized for
* encryption or decryption
*/
public String encrypt(String data) throws UnsupportedEncodingException, NoSuchAlgorithmException, NoSuchPaddingException, InvalidAlgorithmParameterException, InvalidKeyException, InvalidKeySpecException, BadPaddingException, IllegalBlockSizeException {
if (data == null) return null;
SecretKey secretKey = getSecretKey(hashTheKey(mBuilder.getKey()));
byte[] dataBytes = data.getBytes(mBuilder.getCharsetName());
Cipher cipher = Cipher.getInstance(mBuilder.getAlgorithm());
cipher.init(Cipher.ENCRYPT_MODE, secretKey, mBuilder.getIvParameterSpec(), mBuilder.getSecureRandom());
return Base64.encodeToString(cipher.doFinal(dataBytes), mBuilder.getBase64Mode());
}
/**
* This is a sugar method that calls encrypt method and catch the exceptions returning
* {@code null} when it occurs and logging the error
*
* @param data the String to be encrypted
*
* @return the encrypted String or {@code null} if you send the data as {@code null}
*/
public String encryptOrNull(String data) {
try {
return encrypt(data);
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
/**
* This is a sugar method that calls encrypt method in background, it is a good idea to use this
* one instead the default method because encryption can take several time and with this method
* the process occurs in a AsyncTask, other advantage is the Callback with separated methods,
* one for success and other for the exception
*
* @param data the String to be encrypted
* @param callback the Callback to handle the results
*/
public void encryptAsync(final String data, final Callback callback) {
if (callback == null) return;
new Thread(new Runnable() {
@Override
public void run() {
try {
String encrypt = encrypt(data);
if (encrypt == null) {
callback.onError(new Exception("Encrypt return null, it normally occurs when you send a null data"));
}
callback.onSuccess(encrypt);
} catch (Exception e) {
callback.onError(e);
}
}
}).start();
}
/**
* Decrypt a String
*
* @param data the String to be decrypted
*
* @return the decrypted String or {@code null} if you send the data as {@code null}
*
* @throws UnsupportedEncodingException if the Builder charset name is not supported or if
* the Builder charset name is not supported
* @throws NoSuchAlgorithmException if the Builder digest algorithm is not available
* or if this has no installed provider that can
* provide the requested by the Builder secret key
* type or it is {@code null}, empty or in an invalid
* format
* @throws NoSuchPaddingException if no installed provider can provide the padding
* scheme in the Builder digest algorithm
* @throws InvalidAlgorithmParameterException if the specified parameters are inappropriate for
* the cipher
* @throws InvalidKeyException if the specified key can not be used to initialize
* the cipher instance
* @throws InvalidKeySpecException if the specified key specification cannot be used
* to generate a secret key
* @throws BadPaddingException if the padding of the data does not match the
* padding scheme
* @throws IllegalBlockSizeException if the size of the resulting bytes is not a
* multiple of the cipher block size
* @throws NullPointerException if the Builder digest algorithm is {@code null} or
* if the specified Builder secret key type is
* {@code null}
* @throws IllegalStateException if the cipher instance is not initialized for
* encryption or decryption
*/
public String decrypt(String data) throws UnsupportedEncodingException, NoSuchAlgorithmException, InvalidKeySpecException, NoSuchPaddingException, InvalidAlgorithmParameterException, InvalidKeyException, BadPaddingException, IllegalBlockSizeException {
if (data == null) return null;
byte[] dataBytes = Base64.decode(data, mBuilder.getBase64Mode());
SecretKey secretKey = getSecretKey(hashTheKey(mBuilder.getKey()));
Cipher cipher = Cipher.getInstance(mBuilder.getAlgorithm());
cipher.init(Cipher.DECRYPT_MODE, secretKey, mBuilder.getIvParameterSpec(), mBuilder.getSecureRandom());
byte[] dataBytesDecrypted = (cipher.doFinal(dataBytes));
return new String(dataBytesDecrypted);
}
/**
* This is a sugar method that calls decrypt method and catch the exceptions returning
* {@code null} when it occurs and logging the error
*
* @param data the String to be decrypted
*
* @return the decrypted String or {@code null} if you send the data as {@code null}
*/
public String decryptOrNull(String data) {
try {
return decrypt(data);
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
/**
* This is a sugar method that calls decrypt method in background, it is a good idea to use this
* one instead the default method because decryption can take several time and with this method
* the process occurs in a AsyncTask, other advantage is the Callback with separated methods,
* one for success and other for the exception
*
* @param data the String to be decrypted
* @param callback the Callback to handle the results
*/
public void decryptAsync(final String data, final Callback callback) {
if (callback == null) return;
new Thread(new Runnable() {
@Override
public void run() {
try {
String decrypt = decrypt(data);
if (decrypt == null) {
callback.onError(new Exception("Decrypt return null, it normally occurs when you send a null data"));
}
callback.onSuccess(decrypt);
} catch (Exception e) {
callback.onError(e);
}
}
}).start();
}
/**
* creates a 128bit salted aes key
*
* @param key encoded input key
*
* @return aes 128 bit salted key
*
* @throws NoSuchAlgorithmException if no installed provider that can provide the requested
* by the Builder secret key type
* @throws UnsupportedEncodingException if the Builder charset name is not supported
* @throws InvalidKeySpecException if the specified key specification cannot be used to
* generate a secret key
* @throws NullPointerException if the specified Builder secret key type is {@code null}
*/
private SecretKey getSecretKey(char[] key) throws NoSuchAlgorithmException, UnsupportedEncodingException, InvalidKeySpecException {
SecretKeyFactory factory = SecretKeyFactory.getInstance(mBuilder.getSecretKeyType());
KeySpec spec = new PBEKeySpec(key, mBuilder.getSalt().getBytes(mBuilder.getCharsetName()), mBuilder.getIterationCount(), mBuilder.getKeyLength());
SecretKey tmp = factory.generateSecret(spec);
return new SecretKeySpec(tmp.getEncoded(), mBuilder.getKeyAlgorithm());
}
/**
* takes in a simple string and performs an sha1 hash
* that is 128 bits long...we then base64 encode it
* and return the char array
*
* @param key simple inputted string
*
* @return sha1 base64 encoded representation
*
* @throws UnsupportedEncodingException if the Builder charset name is not supported
* @throws NoSuchAlgorithmException if the Builder digest algorithm is not available
* @throws NullPointerException if the Builder digest algorithm is {@code null}
*/
private char[] hashTheKey(String key) throws UnsupportedEncodingException, NoSuchAlgorithmException {
MessageDigest messageDigest = MessageDigest.getInstance(mBuilder.getDigestAlgorithm());
messageDigest.update(key.getBytes(mBuilder.getCharsetName()));
return Base64.encodeToString(messageDigest.digest(), Base64.NO_PADDING).toCharArray();
}
/**
* When you encrypt or decrypt in callback mode you get noticed of result using this interface
*/
public interface Callback {
/**
* Called when encrypt or decrypt job ends and the process was a success
*
* @param result the encrypted or decrypted String
*/
void onSuccess(String result);
/**
* Called when encrypt or decrypt job ends and has occurred an error in the process
*
* @param exception the Exception related to the error
*/
void onError(Exception exception);
}
/**
* This class is used to create an Encryption instance, you should provide ALL data or start
* with the Default Builder provided by the getDefaultBuilder method
*/
public static class Builder {
private byte[] mIv;
private int mKeyLength;
private int mBase64Mode;
private int mIterationCount;
private String mSalt;
private String mKey;
private String mAlgorithm;
private String mKeyAlgorithm;
private String mCharsetName;
private String mSecretKeyType;
private String mDigestAlgorithm;
private String mSecureRandomAlgorithm;
private SecureRandom mSecureRandom;
private IvParameterSpec mIvParameterSpec;
/**
* @return an default builder with the follow defaults:
* the default char set is UTF-8
* the default base mode is Base64
* the Secret Key Type is the PBKDF2WithHmacSHA1
* the default salt is "some_salt" but can be anything
* the default length of key is 128
* the default iteration count is 65536
* the default algorithm is AES in CBC mode and PKCS 5 Padding
* the default secure random algorithm is SHA1PRNG
* the default message digest algorithm SHA1
*/
public static Builder getDefaultBuilder(String key, String salt, byte[] iv) {
return new Builder()
.setIv(iv)
.setKey(key)
.setSalt(salt)
.setKeyLength(128)
.setKeyAlgorithm("AES")
.setCharsetName("UTF8")
.setIterationCount(1)
.setDigestAlgorithm("SHA1")
.setBase64Mode(Base64.DEFAULT)
.setAlgorithm("AES/CBC/PKCS5Padding")
.setSecureRandomAlgorithm("SHA1PRNG")
.setSecretKeyType("PBKDF2WithHmacSHA1");
}
/**
* Build the Encryption with the provided information
*
* @return a new Encryption instance with provided information
*
* @throws NoSuchAlgorithmException if the specified SecureRandomAlgorithm is not available
* @throws NullPointerException if the SecureRandomAlgorithm is {@code null} or if the
* IV byte array is null
*/
public Encryption build() throws NoSuchAlgorithmException {
setSecureRandom(SecureRandom.getInstance(getSecureRandomAlgorithm()));
setIvParameterSpec(new IvParameterSpec(getIv()));
return new Encryption(this);
}
/**
* @return the charset name
*/
private String getCharsetName() {
return mCharsetName;
}
/**
* @param charsetName the new charset name
*
* @return this instance to follow the Builder patter
*/
public Builder setCharsetName(String charsetName) {
mCharsetName = charsetName;
return this;
}
/**
* @return the algorithm
*/
private String getAlgorithm() {
return mAlgorithm;
}
/**
* @param algorithm the algorithm to be used
*
* @return this instance to follow the Builder patter
*/
public Builder setAlgorithm(String algorithm) {
mAlgorithm = algorithm;
return this;
}
/**
* @return the key algorithm
*/
private String getKeyAlgorithm() {
return mKeyAlgorithm;
}
/**
* @param keyAlgorithm the keyAlgorithm to be used in keys
*
* @return this instance to follow the Builder patter
*/
public Builder setKeyAlgorithm(String keyAlgorithm) {
mKeyAlgorithm = keyAlgorithm;
return this;
}
/**
* @return the Base 64 mode
*/
private int getBase64Mode() {
return mBase64Mode;
}
/**
* @param base64Mode set the base 64 mode
*
* @return this instance to follow the Builder patter
*/
public Builder setBase64Mode(int base64Mode) {
mBase64Mode = base64Mode;
return this;
}
/**
* @return the type of aes key that will be created, on KITKAT+ the API has changed, if you
* are getting problems please @see <a href="http://android-developers.blogspot.com.br/2013/12/changes-to-secretkeyfactory-api-in.html">http://android-developers.blogspot.com.br/2013/12/changes-to-secretkeyfactory-api-in.html</a>
*/
private String getSecretKeyType() {
return mSecretKeyType;
}
/**
* @param secretKeyType the type of AES key that will be created, on KITKAT+ the API has
* changed, if you are getting problems please @see <a href="http://android-developers.blogspot.com.br/2013/12/changes-to-secretkeyfactory-api-in.html">http://android-developers.blogspot.com.br/2013/12/changes-to-secretkeyfactory-api-in.html</a>
*
* @return this instance to follow the Builder patter
*/
public Builder setSecretKeyType(String secretKeyType) {
mSecretKeyType = secretKeyType;
return this;
}
/**
* @return the value used for salting
*/
private String getSalt() {
return mSalt;
}
/**
* @param salt the value used for salting
*
* @return this instance to follow the Builder patter
*/
public Builder setSalt(String salt) {
mSalt = salt;
return this;
}
/**
* @return the key
*/
private String getKey() {
return mKey;
}
/**
* @param key the key.
*
* @return this instance to follow the Builder patter
*/
public Builder setKey(String key) {
mKey = key;
return this;
}
/**
* @return the length of key
*/
private int getKeyLength() {
return mKeyLength;
}
/**
* @param keyLength the length of key
*
* @return this instance to follow the Builder patter
*/
public Builder setKeyLength(int keyLength) {
mKeyLength = keyLength;
return this;
}
/**
* @return the number of times the password is hashed
*/
private int getIterationCount() {
return mIterationCount;
}
/**
* @param iterationCount the number of times the password is hashed
*
* @return this instance to follow the Builder patter
*/
public Builder setIterationCount(int iterationCount) {
mIterationCount = iterationCount;
return this;
}
/**
* @return the algorithm used to generate the secure random
*/
private String getSecureRandomAlgorithm() {
return mSecureRandomAlgorithm;
}
/**
* @param secureRandomAlgorithm the algorithm to generate the secure random
*
* @return this instance to follow the Builder patter
*/
public Builder setSecureRandomAlgorithm(String secureRandomAlgorithm) {
mSecureRandomAlgorithm = secureRandomAlgorithm;
return this;
}
/**
* @return the IvParameterSpec bytes array
*/
private byte[] getIv() {
return mIv;
}
/**
* @param iv the byte array to create a new IvParameterSpec
*
* @return this instance to follow the Builder patter
*/
public Builder setIv(byte[] iv) {
mIv = iv;
return this;
}
/**
* @return the SecureRandom
*/
private SecureRandom getSecureRandom() {
return mSecureRandom;
}
/**
* @param secureRandom the Secure Random
*
* @return this instance to follow the Builder patter
*/
public Builder setSecureRandom(SecureRandom secureRandom) {
mSecureRandom = secureRandom;
return this;
}
/**
* @return the IvParameterSpec
*/
private IvParameterSpec getIvParameterSpec() {
return mIvParameterSpec;
}
/**
* @param ivParameterSpec the IvParameterSpec
*
* @return this instance to follow the Builder patter
*/
public Builder setIvParameterSpec(IvParameterSpec ivParameterSpec) {
mIvParameterSpec = ivParameterSpec;
return this;
}
/**
* @return the message digest algorithm
*/
private String getDigestAlgorithm() {
return mDigestAlgorithm;
}
/**
* @param digestAlgorithm the algorithm to be used to get message digest instance
*
* @return this instance to follow the Builder patter
*/
public Builder setDigestAlgorithm(String digestAlgorithm) {
mDigestAlgorithm = digestAlgorithm;
return this;
}
}
}
I see all answers are moving the view itself by the value of the keyboard height. Well, I have an elaborate answer, which could be useful if you are using constraints i.e autolayout
, that moves a view by changing its constraint value (bottom or top constraints for example) by a predefined value or you can use keyboard size value.
In this example, I use bottom constraint from the textfield to Bottom Layout View with initial value of 175.
@IBOutlet weak var bottomConstraint: NSLayoutConstraint!
override func viewDidLoad() {
super.viewDidLoad()
NSNotificationCenter.defaultCenter().addObserver(self, selector: Selector("keyboardWillShow:"), name:UIKeyboardWillShowNotification, object: nil);
NSNotificationCenter.defaultCenter().addObserver(self, selector: Selector("keyboardWillHide:"), name:UIKeyboardWillHideNotification, object: nil);
}
func keyboardWillShow(notification: NSNotification) {
//To retrieve keyboard size, uncomment following line
//let keyboardSize = (notification.userInfo?[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.CGRectValue()
bottomConstraint.constant = 260
UIView.animateWithDuration(0.3) {
self.view.layoutIfNeeded()
}
}
func keyboardWillHide(notification: NSNotification) {
//To retrieve keyboard size, uncomment following line
//let keyboardSize = (notification.userInfo?[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.CGRectValue()
bottomConstraint.constant = 175
UIView.animateWithDuration(0.3) {
self.view.layoutIfNeeded()
}
}
You can fetch all branches from all remotes like this:
git fetch --all
It's basically a power move.
fetch
updates local copies of remote branches so this is always safe for your local branches BUT:
fetch
will not update local branches (which track remote branches); if you want to update your local branches you still need to pull every branch.
fetch
will not create local branches (which track remote branches), you have to do this manually. If you want to list all remote branches:
git branch -a
To update local branches which track remote branches:
git pull --all
However, this can be still insufficient. It will work only for your local branches which track remote branches. To track all remote branches execute this oneliner BEFORE git pull --all
:
git branch -r | grep -v '\->' | while read remote; do git branch --track "${remote#origin/}" "$remote"; done
git branch -r | grep -v '\->' | while read remote; do git branch --track "${remote#origin/}" "$remote"; done
git fetch --all
git pull --all
(It seems that pull fetches all branches from all remotes, but I always fetch first just to be sure.)
Run the first command only if there are remote branches on the server that aren't tracked by your local branches.
P.S. AFAIK git fetch --all
and git remote update
are equivalent.
Kamil Szot's comment, which folks have found useful.
I had to use:
for remote in `git branch -r`; do git branch --track ${remote#origin/} $remote; done
because your code created local branches named
origin/branchname
and I was getting "refname 'origin/branchname' is ambiguous whenever I referred to it.
One More way to send objects through bundle is by using bundle.putByteArray
Sample code
public class DataBean implements Serializable {
private Date currentTime;
public setDate() {
currentTime = Calendar.getInstance().getTime();
}
public Date getCurrentTime() {
return currentTime;
}
}
put Object of DataBean in to Bundle:
class FirstClass{
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//Your code...
//When you want to start new Activity...
Intent dataIntent =new Intent(FirstClass.this, SecondClass.class);
Bundle dataBundle=new Bundle();
DataBean dataObj=new DataBean();
dataObj.setDate();
try {
dataBundle.putByteArray("Obj_byte_array", object2Bytes(dataObj));
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
dataIntent.putExtras(dataBundle);
startActivity(dataIntent);
}
Converting objects to byte arrays
/**
* Converting objects to byte arrays
*/
static public byte[] object2Bytes( Object o ) throws IOException {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ObjectOutputStream oos = new ObjectOutputStream( baos );
oos.writeObject( o );
return baos.toByteArray();
}
Get Object back from Bundle:
class SecondClass{
DataBean dataBean;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//Your code...
//Get Info from Bundle...
Bundle infoBundle=getIntent().getExtras();
try {
dataBean = (DataBean)bytes2Object(infoBundle.getByteArray("Obj_byte_array"));
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
Method to get objects from byte arrays:
/**
* Converting byte arrays to objects
*/
static public Object bytes2Object( byte raw[] )
throws IOException, ClassNotFoundException {
ByteArrayInputStream bais = new ByteArrayInputStream( raw );
ObjectInputStream ois = new ObjectInputStream( bais );
Object o = ois.readObject();
return o;
}
Hope this will help to other buddies.
>>> value=42
>>> print "Value is %s"%('"'+str(value)+'"')
Value is "42"
Swift 1.2 and iOS 8
Create custom directory (name = "MyCustomData") inside the documents directory but only if the directory does not exist.
// path to documents directory
let documentDirectoryPath = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true).first as! String
// create the custom folder path
let myCustomDataDirectoryPath = documentDirectoryPath.stringByAppendingPathComponent("/MyCustomData")
// check if directory does not exist
if NSFileManager.defaultManager().fileExistsAtPath(myCustomDataDirectoryPath) == false {
// create the directory
var createDirectoryError: NSError? = nil
NSFileManager.defaultManager().createDirectoryAtPath(myCustomDataDirectoryPath, withIntermediateDirectories: false, attributes: nil, error: &createDirectoryError)
// handle the error, you may call an exception
if createDirectoryError != nil {
println("Handle directory creation error...")
}
}
The willSet and didSet observers for the properties whenever the property is assigned a new value. This is true even if the new value is the same as the current value.
And note that willSet
needs a parameter name to work around, on the other hand, didSet
does not.
The didSet observer is called after the value of property is updated. It compares against the old value. If the total number of steps has increased, a message is printed to indicate how many new steps have been taken. The didSet observer does not provide a custom parameter name for the old value, and the default name of oldValue is used instead.
string = "{'server1':'value','server2':'value'}"
#Now removing { and }
s = string.replace("{" ,"")
finalstring = s.replace("}" , "")
#Splitting the string based on , we get key value pairs
list = finalstring.split(",")
dictionary ={}
for i in list:
#Get Key Value pairs separately to store in dictionary
keyvalue = i.split(":")
#Replacing the single quotes in the leading.
m= keyvalue[0].strip('\'')
m = m.replace("\"", "")
dictionary[m] = keyvalue[1].strip('"\'')
print dictionary
Another MySQL option that may look more like Oracle's DECODE
is a combination of FIELD
and ELT
. In the code that follows, FIELD()
returns the argument list position of the string that matches Age. ELT()
returns the string from ELT
s argument list at the position provided by FIELD()
. For example, if Age
is 14
, FIELD(Age, ...)
returns 2
because 14
is the 2nd argument of FIELD
(not counting Age
). Then, ELT(2, ...)
returns 'Fourteen'
, which is the 2nd argument of ELT
(not counting the FIELD()
argument). IFNULL
returns the default AgeBracket
if no match to Age
is found in the list.
Select Name, IFNULL(ELT(FIELD(Age,
13, 14, 15, 16, 17, 18, 19),'Thirteen','Fourteen','Fifteen','Sixteen',
'Seventeen','Eighteen','Nineteen'),
'Adult') AS AgeBracket
FROM Person
While I don't think this is the best solution to the question either in terms of performance or readability it is interesting as an exploration of MySQL's string functions. Keep in mind that FIELD
's output does not seem to be case sensitive. I.e., FIELD('A','A')
and FIELD('a','A')
both return 1
.
You can just compile (start debugging) your work with Ctrl+F5.
Try it. I always do it and the console shows me my results open on it. No additional code is needed.
<script>
$(document).ready(function(){
$('#colorselector').on('change', function() {
if ( this.value == 'red')
{
$("#divid").show();
}
else
{
$("#divid").hide();
}
});
});
</script>
Do like this for every value
I had the same error. Turns out in my hasty scaffolding I left out the model.rb file.
this works for me, sudo apt-get install libx11-dev
It seems all the answers are adding info to e.args[0], thereby altering the existing error message. Is there a downside to extending the args tuple instead? I think the possible upside is, you can leave the original error message alone for cases where parsing that string is needed; and you could add multiple elements to the tuple if your custom error handling produced several messages or error codes, for cases where the traceback would be parsed programmatically (like via a system monitoring tool).
## Approach #1, if the exception may not be derived from Exception and well-behaved:
def to_int(x):
try:
return int(x)
except Exception as e:
e.args = (e.args if e.args else tuple()) + ('Custom message',)
raise
>>> to_int('12')
12
>>> to_int('12 monkeys')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "<stdin>", line 3, in to_int
ValueError: ("invalid literal for int() with base 10: '12 monkeys'", 'Custom message')
or
## Approach #2, if the exception is always derived from Exception and well-behaved:
def to_int(x):
try:
return int(x)
except Exception as e:
e.args += ('Custom message',)
raise
>>> to_int('12')
12
>>> to_int('12 monkeys')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "<stdin>", line 3, in to_int
ValueError: ("invalid literal for int() with base 10: '12 monkeys'", 'Custom message')
Can you see a downside to this approach?
I have created a library based on J. F. Sebastian's solution. You can use it.
I think this should do it for you.
assertThrows(someException.class, ()-> mockedServiceReference.someMethod(param1,parme2,..));
You could take your entire server-side model and turn it into a Javascript object by doing the following:
var model = @Html.Raw(Json.Encode(Model));
In your case if you just want the FloorPlanSettings object, simply pass the Encode
method that property:
var floorplanSettings = @Html.Raw(Json.Encode(Model.FloorPlanSettings));
Function:
#include <string>
std::string
basename(const std::string &filename)
{
if (filename.empty()) {
return {};
}
auto len = filename.length();
auto index = filename.find_last_of("/\\");
if (index == std::string::npos) {
return filename;
}
if (index + 1 >= len) {
len--;
index = filename.substr(0, len).find_last_of("/\\");
if (len == 0) {
return filename;
}
if (index == 0) {
return filename.substr(1, len - 1);
}
if (index == std::string::npos) {
return filename.substr(0, len);
}
return filename.substr(index + 1, len - index - 1);
}
return filename.substr(index + 1, len - index);
}
Tests:
#define CATCH_CONFIG_MAIN
#include <catch/catch.hpp>
TEST_CASE("basename")
{
CHECK(basename("") == "");
CHECK(basename("no_path") == "no_path");
CHECK(basename("with.ext") == "with.ext");
CHECK(basename("/no_filename/") == "no_filename");
CHECK(basename("no_filename/") == "no_filename");
CHECK(basename("/no/filename/") == "filename");
CHECK(basename("/absolute/file.ext") == "file.ext");
CHECK(basename("../relative/file.ext") == "file.ext");
CHECK(basename("/") == "/");
CHECK(basename("c:\\windows\\path.ext") == "path.ext");
CHECK(basename("c:\\windows\\no_filename\\") == "no_filename");
}
My approach to this sort of problem is to use a delegate protocol between the cell and the tableview. This allows you to keep the button handler in the cell subclass, which enables you to assign the touch up action handler to the prototype cell in Interface Builder, while still keeping the button handler logic in the view controller.
It also avoids the potentially fragile approach of navigating the view hierarchy or the use of the tag
property, which has issues when cells indexes change (as a result of insertion, deletion or reordering)
CellSubclass.swift
protocol CellSubclassDelegate: class {
func buttonTapped(cell: CellSubclass)
}
class CellSubclass: UITableViewCell {
@IBOutlet var someButton: UIButton!
weak var delegate: CellSubclassDelegate?
override func prepareForReuse() {
super.prepareForReuse()
self.delegate = nil
}
@IBAction func someButtonTapped(sender: UIButton) {
self.delegate?.buttonTapped(self)
}
ViewController.swift
class MyViewController: UIViewController, CellSubclassDelegate {
@IBOutlet var tableview: UITableView!
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("Cell", forIndexPath: indexPath) as! CellSubclass
cell.delegate = self
// Other cell setup
}
// MARK: CellSubclassDelegate
func buttonTapped(cell: CellSubclass) {
guard let indexPath = self.tableView.indexPathForCell(cell) else {
// Note, this shouldn't happen - how did the user tap on a button that wasn't on screen?
return
}
// Do whatever you need to do with the indexPath
print("Button tapped on row \(indexPath.row)")
}
}
If the component is an EJB, then, there shouldn't be a problem injecting an EM.
But....In JBoss 5, the JAX-RS integration isn't great. If you have an EJB, you cannot use scanning and you must manually list in the context-param resteasy.jndi.resource. If you still have scanning on, Resteasy will scan for the resource class and register it as a vanilla JAX-RS service and handle the lifecycle.
This is probably the problem.
public function store()
{
$this->validate(request(), [
'title' => 'required',
'slug' => 'required',
'file' => 'required|image|mimes:jpg,jpeg,png,gif'
]);
$fileName = null;
if (request()->hasFile('file')) {
$file = request()->file('file');
$fileName = md5($file->getClientOriginalName() . time()) . "." . $file->getClientOriginalExtension();
$file->move('./uploads/categories/', $fileName);
}
Category::create([
'title' => request()->get('title'),
'slug' => str_slug(request()->get('slug')),
'description' => request()->get('description'),
'category_img' => $fileName,
'category_status' => 'DEACTIVE'
]);
return redirect()->to('/admin/category');
}
Try this:
import time
t_end = time.time() + 60 * 15
while time.time() < t_end:
# do whatever you do
This will run for 15 min x 60 s = 900 seconds.
Function time.time
returns the current time in seconds since 1st Jan 1970. The value is in floating point, so you can even use it with sub-second precision. In the beginning the value t_end is calculated to be "now" + 15 minutes. The loop will run until the current time exceeds this preset ending time.
Just use the standard library in C++:
#include <bitset>
You need a variable of type std::bitset
:
std::bitset<8ul> x;
x = std::bitset<8>(10);
for (int i = x.size() - 1; i >= 0; i--) {
std::cout << x[i];
}
In this example, I stored the binary form of 10
in x
.
8ul
defines the size of your bits, so 7ul
means seven bits and so on.
You'll need to write an insert trigger, and possible an update trigger if you want it to change when the record is changed. This article explains it quite nicely:
http://www.revsys.com/blog/2006/aug/04/automatically-updating-a-timestamp-column-in-postgresql/
CREATE OR REPLACE FUNCTION update_modified_column() RETURNS TRIGGER AS $$ BEGIN NEW.modified = now(); RETURN NEW; END; $$ language 'plpgsql';
Apply the trigger like this:
CREATE TRIGGER update_customer_modtime BEFORE UPDATE ON customer FOR EACH ROW EXECUTE PROCEDURE update_modified_column();
In any web application, there will be a web.xml
in the WEB-INF/
folder.
If you dont have one in your web app, as it seems to be the case in your folder structure, the default Tomcat web.xml
is under TOMCAT_HOME/conf/web.xml
Either way, the relevant lines of the web.xml are
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
so any file matching this pattern when found will be shown as the home page.
In Tomcat, a web.xml setting within your web app will override the default, if present.
Further Reading
At any stage of maven build life cycle, all the previous goals are performed.
Ex: mvn install will invoke mvn validate, mvn compile, mvn test, mvn package etc.
Here's an easier way:
sudo apt-get install maven
More details are here.
As well as the previous answers are you could always use the Pull attrib as well:
<ol class="row" id="possibilities">
<li class="span6">
<div class="row">
<div class="span3">
<p>some text here</p>
<p>Text Here too</p>
</div>
<figure class="span3 pull-right"><img src="img/screenshots/options.png" alt="Some text" /></figure>
</div>
</li>
<li class="span6">
<div class="row">
<figure class="span3"><img src="img/qrcode.png" alt="Some text" /></figure>
<div class="span3">
<p>Some text</p>
<p>Some text here too.</p>
</div>
</div>
</li>
Another option is to create a function and call that function everytime you need to select clob column.
create or replace function clob_to_char_func
(clob_column in CLOB,
for_how_many_bytes in NUMBER,
from_which_byte in NUMBER)
return VARCHAR2
is
begin
Return substrb(dbms_lob.substr(clob_column
,for_how_many_bytes
,from_which_byte)
,1
,for_how_many_bytes);
end;
and call that function as;
SELECT tocharvalue, clob_to_char_func(tocharvalue, 1, 9999)
FROM (SELECT clob_column AS tocharvalue FROM table_name);
1.First open your terminal
2.Then update your gem file with command
sudo gem install -n /usr/local/bin cocoapods
3.Then give your project path
cd /your project path
4.Touch the podifle
touch podfile
5.Open your podfile
open -e podfile
6.It will open a podfile like a text edit. Then set your target. For example if you want to set up Google maps then your podfile should be like
use_frameworks!
target 'yourProjectName' do
pod 'GoogleMaps'
end
7.Then install the pod
pod install
This is probably not a solution to your problem, but a suggestion just in case (I know I ran into a similar problem before but not with a .NET application).
If you are on a 64-bit machine, there are 2 regsvr32.exe
files;
One is in \Windows\System32
and the other one is in \Windows\SysWOW64
.
You cannot register 64-bit COM-objects with the 32-bit version, but you can do it vice versa. I'd try registering your DLL with both regsvr32.exe
files explicitly (i.e. typing "C:\Windows\System32\regsvr32.exe /i mydll.dll
" and then "C:\Windows\SysWOW64\regsvr32.exe /i mydll.dll
") and seeing if that helps...
find( sub[, start[, end]])
Return the lowest index in the string where substring sub is found, such that sub is contained in the range [start, end]. Optional arguments start and end are interpreted as in slice notation. Return -1 if sub is not found.
From the docs.
If you are working with objects track by the identifier(e.g. $index) instead of the whole object and you reload your data later, ngRepeat will not rebuild the DOM elements for items it has already rendered, even if the JavaScript objects in the collection have been substituted for new ones.
It usually happens because one of the following reasons:
After doing so, you may still need to update in the Entity Framework designer (or alternatively delete the entity and then add it) before you stop getting the error.
Create a scope property called selectedIndex, and an itemClicked function:
function MyController ($scope) {
$scope.collection = ["Item 1", "Item 2"];
$scope.selectedIndex = 0; // Whatever the default selected index is, use -1 for no selection
$scope.itemClicked = function ($index) {
$scope.selectedIndex = $index;
};
}
Then my template would look something like this:
<div>
<span ng-repeat="item in collection"
ng-class="{ 'selected-class-name': $index == selectedIndex }"
ng-click="itemClicked($index)"> {{ item }} </span>
</div>
Just for reference $index is a magic variable available within ng-repeat directives.
You can use this same sample within a directive and template as well.
Here is a working plnkr:
From .NET 4.5 on, there is the Stream.CopyToAsync
method
input.CopyToAsync(output);
This will return a Task
that can be continued on when completed, like so:
await input.CopyToAsync(output)
// Code from here on will be run in a continuation.
Note that depending on where the call to CopyToAsync
is made, the code that follows may or may not continue on the same thread that called it.
The SynchronizationContext
that was captured when calling await
will determine what thread the continuation will be executed on.
Additionally, this call (and this is an implementation detail subject to change) still sequences reads and writes (it just doesn't waste a threads blocking on I/O completion).
From .NET 4.0 on, there's is the Stream.CopyTo
method
input.CopyTo(output);
For .NET 3.5 and before
There isn't anything baked into the framework to assist with this; you have to copy the content manually, like so:
public static void CopyStream(Stream input, Stream output)
{
byte[] buffer = new byte[32768];
int read;
while ((read = input.Read(buffer, 0, buffer.Length)) > 0)
{
output.Write (buffer, 0, read);
}
}
Note 1: This method will allow you to report on progress (x bytes read so far ...)
Note 2: Why use a fixed buffer size and not input.Length
? Because that Length may not be available! From the docs:
If a class derived from Stream does not support seeking, calls to Length, SetLength, Position, and Seek throw a NotSupportedException.
if you're connecting to a postgres database, the following works:
result = cursor.execute(query)
if result.returns_rows:
# we got rows!
return [{k:v for k,v in zip(result.keys(), r)} for r in result.rows]
else:
return None
"commentLine" is the name of function you are looking for. This function coment and uncoment with the same keybinding
A null
pointer is one that points to nowhere. When you dereference a pointer p
, you say "give me the data at the location stored in "p". When p
is a null
pointer, the location stored in p
is nowhere
, you're saying "give me the data at the location 'nowhere'". Obviously, it can't do this, so it throws a null pointer exception
.
In general, it's because something hasn't been initialized properly.
Well In my parent directory I see:
$ git status
On branch master
Your branch is up-to-date with 'origin/master'.
Unmerged paths:
(use "git reset HEAD <file>..." to unstage)
(use "git add <file>..." to mark resolution)
So I just did this
git reset HEAD linux
In my case $1 was not working, but $0 works fine for my purpose.
In this case I was trying to replace strings with the correct format to translate them in Laravel, I hope this could be useful to someone else because it took me a while to sort it out!
Search: (?<=<div>).*?(?=</div>)
Replace: {{ __('$0') }}
Implementation via recursion (dynamic programming), in Java, with test case (TestNG).
PrintPermutation.java
import java.util.Arrays;
/**
* Print permutation of n elements.
*
* @author eric
* @date Oct 13, 2018 12:28:10 PM
*/
public class PrintPermutation {
/**
* Print permutation of array elements.
*
* @param arr
* @return count of permutation,
*/
public static int permutation(int arr[]) {
return permutation(arr, 0);
}
/**
* Print permutation of part of array elements.
*
* @param arr
* @param n
* start index in array,
* @return count of permutation,
*/
private static int permutation(int arr[], int n) {
int counter = 0;
for (int i = n; i < arr.length; i++) {
swapArrEle(arr, i, n);
counter += permutation(arr, n + 1);
swapArrEle(arr, n, i);
}
if (n == arr.length - 1) {
counter++;
System.out.println(Arrays.toString(arr));
}
return counter;
}
/**
* swap 2 elements in array,
*
* @param arr
* @param i
* @param k
*/
private static void swapArrEle(int arr[], int i, int k) {
int tmp = arr[i];
arr[i] = arr[k];
arr[k] = tmp;
}
}
PrintPermutationTest.java (test case via TestNG)
import org.testng.Assert;
import org.testng.annotations.Test;
/**
* PrintPermutation test.
*
* @author eric
* @date Oct 14, 2018 3:02:23 AM
*/
public class PrintPermutationTest {
@Test
public void test() {
int arr[] = new int[] { 0, 1, 2, 3 };
Assert.assertEquals(PrintPermutation.permutation(arr), 24);
int arrSingle[] = new int[] { 0 };
Assert.assertEquals(PrintPermutation.permutation(arrSingle), 1);
int arrEmpty[] = new int[] {};
Assert.assertEquals(PrintPermutation.permutation(arrEmpty), 0);
}
}
Exemple, for :
<div id="myBlock" style="margin: 10px 0px 15px 5px:"></div>
In this js code :
var myMarginTop = $("#myBlock").css("marginBottom");
The var becomes "15px", a string.
If you want an Integer, to avoid NaN (Not a Number), there is multiple ways.
The fastest is to use native js method :
var myMarginTop = parseInt( $("#myBlock").css("marginBottom") );
Change the function that you get one single Result=[array, listp, freep]. So there is only one result to be displayed
Before I get to my reiterated answer; I am confessing that the only answer I would accept here is this one by KM. above. I down voted the other answers because none of them actually answered the question asked or they were not adequate. PRINT output does indeed show up in the Message window, but that is not what was asked at all.
Why doesn't the PRINT statement output show during my Stored Procedure execution?
The short version of this answer is that you are sending your sproc's execution over to the SQL server and it isn't going to respond until it is finished with the whole transaction. Here is a better answer located at this external link.
Don't do these things
Alternative to PRINT inside of a Stored Procedure
Really this is kind of an icky work around in my opinion because the syntax is confusing in the context that it is being used in, but who knows maybe it will be updated in the future by Microsoft. I just don't like the idea of raising an error for the sole purpose of printing out debug info...
It seems like the only way around this issue is to use, as has been explained numerous times already RAISERROR WITH NOWAIT. I am providing an example and pointing out a small problem with this approach:
ALTER
--CREATE
PROCEDURE [dbo].[PrintVsRaiseErrorSprocExample]
AS
BEGIN
SET NOCOUNT ON;
-- This will print immediately
RAISERROR ('RE Start', 0, 1) WITH NOWAIT
SELECT 1;
-- Five second delay to simulate lengthy execution
WAITFOR DELAY '00:00:05'
-- This will print after the five second delay
RAISERROR ('RE End', 0, 1) WITH NOWAIT
SELECT 2;
END
GO
EXEC [dbo].[PrintVsRaiseErrorSprocExample]
Both SELECT statement results will only show after the execution is finished and the print statements will show in the order shown above.
Potential problem with this approach
Let's say you have both your PRINT statement and RAISERROR statement one after the other, then they both print. I'm sure this has something to do with buffering, but just be aware that this can happen.
ALTER
--CREATE
PROCEDURE [dbo].[PrintVsRaiseErrorSprocExample2]
AS
BEGIN
SET NOCOUNT ON;
-- Both the PRINT and RAISERROR statements will show
PRINT 'P Start';
RAISERROR ('RE Start', 0, 1) WITH NOWAIT
SELECT 1;
WAITFOR DELAY '00:00:05'
-- Both the PRINT and RAISERROR statements will show
PRINT 'P End'
RAISERROR ('RE End', 0, 1) WITH NOWAIT
SELECT 2;
END
GO
EXEC [dbo].[PrintVsRaiseErrorSprocExample2]
Therefore the work around here is, don't use both PRINT and RAISERROR, just choose one over the other. If you want your output to show during the execution of a sproc then use RAISERROR WITH NOWAIT.
You can do:
def truncate(f, n):
return math.floor(f * 10 ** n) / 10 ** n
testing:
>>> f=1.923328437452
>>> [truncate(f, n) for n in range(5)]
[1.0, 1.9, 1.92, 1.923, 1.9233]
Here is code to get line number and column position
function getLineNumber(tArea) {
return tArea.value.substr(0, tArea.selectionStart).split("\n").length;
}
function getCursorPos() {
var me = $("textarea[name='documenttext']")[0];
var el = $(me).get(0);
var pos = 0;
if ('selectionStart' in el) {
pos = el.selectionStart;
} else if ('selection' in document) {
el.focus();
var Sel = document.selection.createRange();
var SelLength = document.selection.createRange().text.length;
Sel.moveStart('character', -el.value.length);
pos = Sel.text.length - SelLength;
}
var ret = pos - prevLine(me);
alert(ret);
return ret;
}
function prevLine(me) {
var lineArr = me.value.substr(0, me.selectionStart).split("\n");
var numChars = 0;
for (var i = 0; i < lineArr.length-1; i++) {
numChars += lineArr[i].length+1;
}
return numChars;
}
tArea is the text area DOM element
What happens when you set all of the attributes in one attr()
command like so
$(this).attr({
id : this.id + '_' + new_id,
name: this.name + '_' + new_id,
value: 'test'
});
In ES7 you can do:
for (const [key, value] of Object.entries(obj)) {
//
}
You can also use the boar
package to run your notebook within a python code.
from boar.running import run_notebook
outputs = run_notebook("nb.ipynb")
If you update your notebook, you won't have to convert it again to a python file.
More information at:
https://github.com/alexandreCameron/boar/blob/master/USAGE.md
just add them like this :
String character = "a";
String otherString = "helen";
otherString=otherString+character;
System.out.println(otherString);
There are various ways:
Class.newInstance
.Constructor.newInstance
.Object.clone
(does not call a constructor).new
for you.String
s)....
) method call (no constructor for arrays).throw null;
or "".toCharArray()[0]
.new
keyword as well.DateTime.Now.Tostring();
. You can supply parameters to To string function in a lot of ways like given in this link http://www.geekzilla.co.uk/View00FF7904-B510-468C-A2C8-F859AA20581F.htm
This will be a lot useful. If you reside somewhere else than the regular format (MM/dd/yyyy)
use always MM not mm, mm gives minutes and MM gives month.
The problem is that you are not logged in as a root user (which you don't want). You need to create a certificate for gdb to be allowed access. Follow this tutorial and you should be good to go...
http://sourceware.org/gdb/wiki/BuildingOnDarwin
If all else fails, just use: sudo gdb executableFileName
Your best bet is to change that column to a timestamp. MySQL will automatically use the first timestamp in a row as a 'last modified' value and update it for you. This is configurable if you just want to save creation time.
See doc http://dev.mysql.com/doc/refman/5.7/en/timestamp-initialization.html
Or a nested List (okay, the OP was for a single column and this is for multiple columns..):
//Base list is a list of fields, ie a data record
//Enclosing list is then a list of those records, ie the Result set
List<List<String>> ResultSet = new List<List<String>>();
using (SqlConnection connection =
new SqlConnection(connectionString))
{
// Create the Command and Parameter objects.
SqlCommand command = new SqlCommand(qString, connection);
// Create and execute the DataReader..
connection.Open();
SqlDataReader reader = command.ExecuteReader();
while (reader.Read())
{
var rec = new List<string>();
for (int i = 0; i <= reader.FieldCount-1; i++) //The mathematical formula for reading the next fields must be <=
{
rec.Add(reader.GetString(i));
}
ResultSet.Add(rec);
}
}
2020 update/example...
A more complex example, using brackets and literals...something you may have to do for example with vue/axios. Wrap the literal in the brackets, so
[ ` ... ` ]
{
[`filter[${query.key}]`]: query.value, // 'filter[foo]' : 'bar'
}
I accomplish this with a VisualBrush
and some triggers in a Style
suggested by :sellmeadog
.
<TextBox>
<TextBox.Style>
<Style TargetType="TextBox" xmlns:sys="clr-namespace:System;assembly=mscorlib">
<Style.Resources>
<VisualBrush x:Key="CueBannerBrush" AlignmentX="Left" AlignmentY="Center" Stretch="None">
<VisualBrush.Visual>
<Label Content="Search" Foreground="LightGray" />
</VisualBrush.Visual>
</VisualBrush>
</Style.Resources>
<Style.Triggers>
<Trigger Property="Text" Value="{x:Static sys:String.Empty}">
<Setter Property="Background" Value="{StaticResource CueBannerBrush}" />
</Trigger>
<Trigger Property="Text" Value="{x:Null}">
<Setter Property="Background" Value="{StaticResource CueBannerBrush}" />
</Trigger>
<Trigger Property="IsKeyboardFocused" Value="True">
<Setter Property="Background" Value="White" />
</Trigger>
</Style.Triggers>
</Style>
</TextBox.Style>
</TextBox>
@sellmeadog :Application running, bt Design not loading...the following Error comes: Ambiguous type reference. A type named 'StaticExtension' occurs in at least two namespaces, 'MS.Internal.Metadata.ExposedTypes.Xaml' and 'System.Windows.Markup'. Consider adjusting the assembly XmlnsDefinition attributes. 'm using .net 3.5
When you want to convert your code to result( executable, library or whatever ), there is 2 steps:
1) compile
2) link
In first step compiler should now about some things like sizeof objects that used by you, prototype of functions and maybe inheritance. on the other hand linker want to find implementation of functions and global variables in your code.
Now when you use ClassTwo
in File1.cpp
compiler know nothing about it and don't know how much memory should allocate for it or for example witch members it have or is it a class and enum or even a typedef of int, so compilation will be failed by the compiler. adding File2.cpp
solve the problem of linker that look for implementation but the compiler is still unhappy, because it know nothing about your type.
So remember, in compile phase you always work with just one file( and of course files that included by that one file ) and in link phase you need multiple files that contain implementations. and since C/C++ are statically typed and they allow their identifier to work for many purposes( definition, typedef, enum class, ... ) so you should always identify you identifier to the compiler and then use it and as a rule compiler should always know size of your variable!!
My approach was to make a slight command line variant that adds the registry switch.
I created these files in the nodejs folder where the npm executable is found:
npm-.cmd
:
@ECHO OFF
npm --registry https://registry.npmjs.org %*
npm-
:
#!/bin/sh
"npm" --registry https://registry.npmjs.org "$@"
Now, if I want to do an operation against the normal npm registry (while I am not connected to the VPN), I just type npm-
where I would usually type npm
.
To test this command and see the registry for a package, use this example:
npm- view lodash
PS. I am in windows and have tested this in Bash, CMD, and Powershell. I also
Have you tried READPAST?
I've used UPDLOCK and READPAST together when treating a table like a queue.
Perhaps use tikz.
Whilst @Didzis has the correct answer, I will expand on a few points
Aesthetics can be set or mapped within a ggplot call.
An aesthetic defined within aes(...) is mapped from the data, and a legend created.
An aesthetic may also be set to a single value, by defining it outside aes().
As far as I can tell, what you want is to set size to a single value, not map within the call to aes()
When you call aes(size = 2)
it creates a variable called `2`
and uses that to create the size, mapping it from a constant value as it is within a call to aes
(thus it appears in your legend).
Using size = 1 (and without reg_labeller
which is perhaps defined somewhere in your script)
Figure29 +
geom_line(aes(group=factor(tradlib)),size=1) +
facet_grid(regionsFull~., scales="free_y") +
scale_colour_brewer(type = "div") +
theme(axis.text.x = element_text(
colour = 'black', angle = 90, size = 13,
hjust = 0.5, vjust = 0.5),axis.title.x=element_blank()) +
ylab("FSI (%Change)") +
theme(axis.text.y = element_text(colour = 'black', size = 12),
axis.title.y = element_text(size = 12,
hjust = 0.5, vjust = 0.2)) +
theme(strip.text.y = element_text(size = 11, hjust = 0.5,
vjust = 0.5, face = 'bold'))
and with size = 2
Figure29 +
geom_line(aes(group=factor(tradlib)),size=2) +
facet_grid(regionsFull~., scales="free_y") +
scale_colour_brewer(type = "div") +
theme(axis.text.x = element_text(colour = 'black', angle = 90,
size = 13, hjust = 0.5, vjust =
0.5),axis.title.x=element_blank()) +
ylab("FSI (%Change)") +
theme(axis.text.y = element_text(colour = 'black', size = 12),
axis.title.y = element_text(size = 12,
hjust = 0.5, vjust = 0.2)) +
theme(strip.text.y = element_text(size = 11, hjust = 0.5,
vjust = 0.5, face = 'bold'))
You can now define the size to work appropriately with the final image size and device type.
When I tried yorammi's solution I was taken to Slack, but not the channel I specified.
I had better luck with:
https://<organization>.slack.com/messages/#<channel>/
and
https://<organization>.slack.com/messages/<channel>/details/
Although, they were both still displayed in a browser window and not the app.
You can put a TextBlock inside the label:
<Label>
<TextBlock Text="Long Text . . . ." TextWrapping="Wrap" />
</Label>
Use the built-in MSDB.DBO.AGENT_DATETIME(20150119,0)
https://blog.sqlauthority.com/2015/03/13/sql-server-interesting-function-agent_datetime/
This does not work:
string s = (string)malloc(sizeof string);
string
refers to a pointer, you need the size of the structure itself:
string s = malloc(sizeof (*string));
Note the lack of cast as well (conversion from void*
(malloc
's return type) is implicitly performed).
Also, in your main
, you have a globally delcared patient
, but that is uninitialized. Try:
patient.number = 3;
patient.name = "John";
patient.address = "Baker street";
patient.birthdate = "4/15/2012";
patient.gender = 'M';
before you read-access any of its members
Also, strcpy
is inherently unsafe as it does not have boundary checking (will copy until the first '\0'
is encountered, writing past allocated memory if the source is too long). Use strncpy
instead, where you can at least specify the maximum number of characters copied -- read the documentation to ensure you pass the correct value, it is easy to make an off-by-one error.
For default tooltip behavior simply add the title
attribute. This can't contain images though.
<div title="regular tooltip">Hover me</div>
Before you clarified the question I did this up in pure JavaScript, hope you find it useful. The image will pop up and follow the mouse.
JavaScript
var tooltipSpan = document.getElementById('tooltip-span');
window.onmousemove = function (e) {
var x = e.clientX,
y = e.clientY;
tooltipSpan.style.top = (y + 20) + 'px';
tooltipSpan.style.left = (x + 20) + 'px';
};
CSS
.tooltip span {
display:none;
}
.tooltip:hover span {
display:block;
position:fixed;
overflow:hidden;
}
One solution for multiple elements is to update all tooltip span
's and setting them under the cursor on mouse move.
var tooltips = document.querySelectorAll('.tooltip span');
window.onmousemove = function (e) {
var x = (e.clientX + 20) + 'px',
y = (e.clientY + 20) + 'px';
for (var i = 0; i < tooltips.length; i++) {
tooltips[i].style.top = y;
tooltips[i].style.left = x;
}
};
Its worth noting - and I only found this out after nearly 9 years of PHP coding that the best way of checking any variable exists is using the empty() function. This is because it doesn't generate errors and even though you turn them off - PHP still generates them! empty() however won't return errors if the variable doesn't exist. So I believe the correct answer is not to check if its null but to do the following
if (!empty($var) && is_null($var))
Note the PHP manual
variable is considered empty if it does not exist or if its value equals FALSE
As opposed to being null which is handy here!
Hmm, what's missing to see the remote branch "4.2" when I pull, as I do when I clone? Something's clearly not identical.
tmp$ mkdir some_repo
tmp$ cd some_repo
some_repo$ git init
Initialized empty Git repository in /tmp/some_repo/.git/
some_repo$ git pull https://github.ourplace.net/babelfish/some_repo.git
:
From https://github.ourplace.net/babelfish/some_repo
* branch HEAD -> FETCH_HEAD
some_repo$ git branch
* master
vs
tmp$ rm -rf some_repo
tmp$ git clone https://github.ourplace.net/babelfish/some_repo.git
Cloning into 'some_repo'...
:
Checking connectivity... done.
tmp$ cd some_repo
some_repo$ git branch
* 4.2
In the specific case where all the files have the same extension but with different suffix (say number of log file) you use the following:
scp [email protected]:/some/log/folder/some_log_file.* ./
This will copy all files named some_log_file from the given folder within the remote, i.e.- some_log_file.1 , some_log_file.2, some_log_file.3 ....
The CSS styles for text input controls such as TextField for JavaFX 8 are defined in the modena.css stylesheet as below. Create a custom CSS stylesheet and modify the colors as you wish. Use the CSS reference guide if you need help understanding the syntax and available attributes and values.
.text-input {
-fx-text-fill: -fx-text-inner-color;
-fx-highlight-fill: derive(-fx-control-inner-background,-20%);
-fx-highlight-text-fill: -fx-text-inner-color;
-fx-prompt-text-fill: derive(-fx-control-inner-background,-30%);
-fx-background-color: linear-gradient(to bottom, derive(-fx-text-box-border, -10%), -fx-text-box-border),
linear-gradient(from 0px 0px to 0px 5px, derive(-fx-control-inner-background, -9%), -fx-control-inner-background);
-fx-background-insets: 0, 1;
-fx-background-radius: 3, 2;
-fx-cursor: text;
-fx-padding: 0.333333em 0.583em 0.333333em 0.583em; /* 4 7 4 7 */
}
.text-input:focused {
-fx-highlight-fill: -fx-accent;
-fx-highlight-text-fill: white;
-fx-background-color:
-fx-focus-color,
-fx-control-inner-background,
-fx-faint-focus-color,
linear-gradient(from 0px 0px to 0px 5px, derive(-fx-control-inner-background, -9%), -fx-control-inner-background);
-fx-background-insets: -0.2, 1, -1.4, 3;
-fx-background-radius: 3, 2, 4, 0;
-fx-prompt-text-fill: transparent;
}
Although using an external stylesheet is a preferred way to do the styling, you can style inline, using something like below:
textField.setStyle("-fx-text-inner-color: red;");
I believe if you used the double
data type, the re-calculation in Excel would work just fine.
Apply float:left;
to both of your divs should make them stand side by side.
This is probably considered dirty by some, but a very practical solution in case of github repositories is just to make a script, e.g. "git-ls":
#!/bin/sh
remote_url=${1:? "$0 requires URL as argument"}
curl -s $remote_url | grep js-directory-link | sed "s/.* title=\"\(.*\)\".*/\1/"
Make it executable and reachable of course: chmod a+x git-ls; sudo cp git-ls /usr/local/bin
. Now, you just run it as you wish:
git-ls https://github.com/mrquincle/aim-bzr
git-ls https://github.com/mrquincle/aim-bzr/tree/master/aim_modules
Also know that there is a git instaweb
utility for your local files. To have the ability to show files and have a server like that does in my opinion not destroy any of the inherent decentralized characteristics of git.
In your Android Developer Tools , From the SDK Manager, install Extras > Google Cloud Messaging for Android Library . After the installation is complete restart your SDK.Then navigate to sdk\extras\google\gcm\gcm-client\dist . there will be your gcm.jar file.
I am on Ubuntu 18.04 and got the same error, was worried for weeks too. Finally realized that gpg2 is not pointing towards anything. So simply run
git config --global gpg.program gpg
And tada, it works like charm.
Your commits will now have verified tag with them.
Immutable objects are simply objects whose state (the object's data) cannot change after construction. Examples of immutable objects from the JDK include String and Integer.
For example:(Point is mutable and string immutable)
Point myPoint = new Point( 0, 0 );
System.out.println( myPoint );
myPoint.setLocation( 1.0, 0.0 );
System.out.println( myPoint );
String myString = new String( "old String" );
System.out.println( myString );
myString.replaceAll( "old", "new" );
System.out.println( myString );
The output is:
java.awt.Point[0.0, 0.0]
java.awt.Point[1.0, 0.0]
old String
old String
Try
this.dataset.id
$("#list li").on('click', function() {_x000D_
alert( this.dataset.id );_x000D_
});
_x000D_
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js"></script>_x000D_
_x000D_
<ul id="list" class="grid">_x000D_
<li data-id="id-40" class="win">_x000D_
<a id="ctl00_cphBody_ListView1_ctrl0_SelectButton" class="project" href="#">_x000D_
<img src="themes/clean/images/win.jpg" class="project-image" alt="get data-id >>CLICK ME<<" />_x000D_
</a>_x000D_
</li>_x000D_
</ul>
_x000D_
You can't bind to a static like that. There's no way for the binding infrastructure to get notified of updates since there's no DependencyObject
(or object instance that implement INotifyPropertyChanged
) involved.
If that value doesn't change, just ditch the binding and use x:Static
directly inside the Text
property. Define app
below to be the namespace (and assembly) location of the VersionManager class.
<TextBox Text="{x:Static app:VersionManager.FilterString}" />
If the value does change, I'd suggest creating a singleton to contain the value and bind to that.
An example of the singleton:
public class VersionManager : DependencyObject {
public static readonly DependencyProperty FilterStringProperty =
DependencyProperty.Register( "FilterString", typeof( string ),
typeof( VersionManager ), new UIPropertyMetadata( "no version!" ) );
public string FilterString {
get { return (string) GetValue( FilterStringProperty ); }
set { SetValue( FilterStringProperty, value ); }
}
public static VersionManager Instance { get; private set; }
static VersionManager() {
Instance = new VersionManager();
}
}
<TextBox Text="{Binding Source={x:Static local:VersionManager.Instance},
Path=FilterString}"/>
Once you have a JArray you can treat it just like any other Enumerable object, and using linq you can access them, check them, verify them, and select them.
var str = @"[1, 2, 3]";
var jArray = JArray.Parse(str);
Console.WriteLine(String.Join("-", jArray.Where(i => (int)i > 1).Select(i => i.ToString())));
First, create numpy
array then convert it into matrix
. See the code below:
import numpy
B = numpy.random.random((3, 4)) #its ndArray
C = numpy.matrix(B)# it is matrix
print(type(B))
print(type(C))
print(C)
If the two
controller is nested in One
controller.
Then you can simply call:
$scope.parentmethod();
Angular will search for parentmethod
function starting with current scope and up until it will reach the rootScope
.
While binding a databound control, you can evaluate a field of the row in your data source with eval() function.
For example you can add a column to your gridview like that :
<asp:BoundField DataField="YourFieldName" />
And alternatively, this is the way with eval :
<asp:TemplateField>
<ItemTemplate>
<asp:Label ID="lbl" runat="server" Text='<%# Eval("YourFieldName") %>'>
</asp:Label>
</ItemTemplate>
</asp:TemplateField>
It seems a little bit complex, but it's flexible, because you can set any property of the control with the eval() function :
<asp:TemplateField>
<ItemTemplate>
<asp:HyperLink ID="HyperLink1" runat="server"
NavigateUrl='<%# "ShowDetails.aspx?id="+Eval("Id") %>'
Text='<%# Eval("Text", "{0}") %>'></asp:HyperLink>
</ItemTemplate>
</asp:TemplateField>
The easiest solution I found for this so far is the Non-Sucking Service Manager
Usage would be
nssm install <servicename> "C:\Program Files\Java\jre7\java.exe" "-jar <path-to-jar-file>"
In one project we addressed this using JSONObject (maven dependency info). We chose this because we preferred returning a simple String rather than a wrapper object. An internal helper class could easily be used instead if you don't want to add a new dependency.
Example Usage:
@RestController
public class TestController
{
@RequestMapping("/getString")
public String getString()
{
return JSONObject.quote("Hello World");
}
}
because your jQuery code is wrong. Correctly would be:
var theParent = $(this).parent().get(0);
$(theParent).css('z-index', 3000);
The warning comes up because Tomcat scans all Jars for TLDs (Tagging Library Definitions).
Step1: To see which JARs are throwing up this warning, insert he following line to tomcat/conf/logging.properties
org.apache.jasper.servlet.TldScanner.level = FINE
Now you should be able to see warnings with a detail of which JARs are causing the intial warning
Step2 Since skipping unneeded JARs during scanning can improve startup time and JSP compilation time, we will skip un-needed JARS in the catalina.properties
file. You have two options here -
tomcat.util.scan.StandardJarScanFilter.jarsToSkip
. But this can get cumbersome if you have a lot jars or if the jars keep changing.tomcat.util.scan.StandardJarScanFilter.jarsToSkip=*
to skip all the jarsYou should now not see the above warnings and if you have a considerably large application, it should save you significant time in deploying an application.
Note: Tested in Tomcat8
You can use http://docs.mitmproxy.org/en/stable/install.html
Its easy to setup and won't require any extra tweaks.
I go through various tool but found it to be really good and easy.
Don't go there. As a long term Mac developer, I can assure you, no solution is really working well. I tried so many solutions, but they are all not too good. I think the problem is that Apple does not really document the meta data format for the necessary data.
Here's how I'm doing it for a long time, very successfully:
Create a new DMG, writeable(!), big enough to hold the expected binary and extra files like readme (sparse might work).
Mount the DMG and give it a layout manually in Finder or with whatever tools suits you for doing that (see FileStorm link at the bottom for a good tool). The background image is usually an image we put into a hidden folder (".something") on the DMG. Put a copy of your app there (any version, even outdated one will do). Copy other files (aliases, readme, etc.) you want there, again, outdated versions will do just fine. Make sure icons have the right sizes and positions (IOW, layout the DMG the way you want it to be).
Unmount the DMG again, all settings should be stored by now.
Write a create DMG script, that works as follows:
This method may not sound optimal, but trust me, it works really well in practice. You can put the original DMG (DMG template) even under version control (e.g. SVN), so if you ever accidentally change/destroy it, you can just go back to a revision where it was still okay. You can add the DMG template to your Xcode project, together with all other files that belong onto the DMG (readme, URL file, background image), all under version control and then create a target (e.g. external target named "Create DMG") and there run the DMG script of above and add your old main target as dependent target. You can access files in the Xcode tree using ${SRCROOT} in the script (is always the source root of your product) and you can access build products by using ${BUILT_PRODUCTS_DIR} (is always the directory where Xcode creates the build results).
Result: Actually Xcode can produce the DMG at the end of the build. A DMG that is ready to release. Not only you can create a relase DMG pretty easy that way, you can actually do so in an automated process (on a headless server if you like), using xcodebuild from command line (automated nightly builds for example).
Regarding the initial layout of the template, FileStorm is a good tool for doing it. It is commercial, but very powerful and easy to use. The normal version is less than $20, so it is really affordable. Maybe one can automate FileStorm to create a DMG (e.g. via AppleScript), never tried that, but once you have found the perfect template DMG, it's really easy to update it for every release.
How you generate the unique_ids is a useful question - but you seem to be making a counter productive assumption about when you generate them!
My point is that you do not need to generate these unique id's at the time of creating your rows, because they are essentially independent of the data being inserted.
What I do is pre-generate unique id's for future use, that way I can take my own sweet time and absolutely guarantee they are unique, and there's no processing to be done at the time of the insert.
For example I have an orders table with order_id in it. This id is generated on the fly when the user enters the order, incrementally 1,2,3 etc forever. The user does not need to see this internal id.
Then I have another table - unique_ids with (order_id, unique_id). I have a routine that runs every night which pre-loads this table with enough unique_id rows to more than cover the orders that might be inserted in the next 24 hours. (If I ever get 10000 orders in one day I'll have a problem - but that would be a good problem to have!)
This approach guarantees uniqueness and takes any processing load away from the insert transaction and into the batch routine, where it does not affect the user.
Building off of ngoozeff
's answer, if you want to make a command run completely in the background (i.e., if you want to hide its output and prevent it from being killed when you close its Terminal window), you can do this instead:
cmd="google-chrome";
"${cmd}" &>/dev/null & disown;
&>/dev/null
sets the command’s stdout
and stderr
to /dev/null
instead of inheriting them from the parent process. &
makes the shell run the command in the background. disown
removes the “current” job, last one stopped or put in the background, from under the shell’s job control.In some shells you can also use &!
instead of & disown
; they both have the same effect. Bash doesn’t support &!
, though.
Also, when putting a command inside of a variable, it's more proper to use eval "${cmd}"
rather than "${cmd}"
:
cmd="google-chrome";
eval "${cmd}" &>/dev/null & disown;
If you run this command directly in Terminal, it will show the PID of the process which the command starts. But inside of a shell script, no output will be shown.
Here's a function for it:
#!/bin/bash
# Run a command in the background.
_evalBg() {
eval "$@" &>/dev/null & disown;
}
cmd="google-chrome";
_evalBg "${cmd}";
Use OpenFileDialog.SafeFileName
OpenFileDialog.SafeFileName
Gets the file name and extension for the file selected in the dialog box. The file name does not include the path.
Update (1/10/2018):
For Spark 2.2+ the best way to do this is probably using the to_date
or to_timestamp
functions, which both support the format
argument. From the docs:
>>> from pyspark.sql.functions import to_timestamp
>>> df = spark.createDataFrame([('1997-02-28 10:30:00',)], ['t'])
>>> df.select(to_timestamp(df.t, 'yyyy-MM-dd HH:mm:ss').alias('dt')).collect()
[Row(dt=datetime.datetime(1997, 2, 28, 10, 30))]
Original Answer (for Spark < 2.2)
It is possible (preferrable?) to do this without a udf:
from pyspark.sql.functions import unix_timestamp, from_unixtime
df = spark.createDataFrame(
[("11/25/1991",), ("11/24/1991",), ("11/30/1991",)],
['date_str']
)
df2 = df.select(
'date_str',
from_unixtime(unix_timestamp('date_str', 'MM/dd/yyy')).alias('date')
)
print(df2)
#DataFrame[date_str: string, date: timestamp]
df2.show(truncate=False)
#+----------+-------------------+
#|date_str |date |
#+----------+-------------------+
#|11/25/1991|1991-11-25 00:00:00|
#|11/24/1991|1991-11-24 00:00:00|
#|11/30/1991|1991-11-30 00:00:00|
#+----------+-------------------+
Did you remember setting the height of the html and body tags in your CSS? This is generally how I've gotten DIVs to extend to full height:
<html>
<head>
<style type="text/css">
html,body { height: 100%; margin: 0px; padding: 0px; }
#full { background: #0f0; height: 100% }
</style>
</head>
<body>
<div id="full">
</div>
</body>
</html>
First, here is Apple's entry related to opting out of dark mode. The content at this link is written for Xcode 11 & iOS 13:
If you wish to opt out your ENTIRE application
Use the following key in your info.plist file:
UIUserInterfaceStyle
And assign it a value of Light
.
The XML for the UIUserInterfaceStyle
assignment:
<key>UIUserInterfaceStyle</key>
<string>Light</string>
You can set overrideUserInterfaceStyle
against the app's window
variable.
Depending on how your project was created, this may be in the AppDelegate
file or the SceneDelegate
.
if #available(iOS 13.0, *) {
window?.overrideUserInterfaceStyle = .light
}
If you wish to opt out your UIViewController on an individual basis
override func viewDidLoad() {
super.viewDidLoad()
// overrideUserInterfaceStyle is available with iOS 13
if #available(iOS 13.0, *) {
// Always adopt a light interface style.
overrideUserInterfaceStyle = .light
}
}
Apple documentation for overrideUserInterfaceStyle
How the above code will look in Xcode 11:
If you are using Xcode 11 for your submission, you can safely ignore everything below this line.
Since the relevant API does not exist in iOS 12, you will get errors when attempting to use the values provided above:
For setting overrideUserInterfaceStyle
in your UIViewController
If you wish to opt out your UIViewController on an individual basis
This can be handled in Xcode 10 by testing the compiler version and the iOS version:
#if compiler(>=5.1)
if #available(iOS 13.0, *) {
// Always adopt a light interface style.
overrideUserInterfaceStyle = .light
}
#endif
If you wish to opt out your ENTIRE application
You can modify the above snippet to work against the entire application for Xcode 10, by adding the following code to your AppDelegate
file.
#if compiler(>=5.1)
if #available(iOS 13.0, *) {
// Always adopt a light interface style.
window?.overrideUserInterfaceStyle = .light
}
#endif
However, the plist setting will fail when using Xcode version 10.x:
Credit to @Aron Nelson, @Raimundas Sakalauskas, @NSLeader and rmaddy for improving this answer with their feedback.
import json
weather = urllib2.urlopen('url')
wjson = weather.read()
wjdata = json.loads(wjson)
print wjdata['data']['current_condition'][0]['temp_C']
What you get from the url is a json string. And your can't parse it with index directly.
You should convert it to a dict by json.loads
and then you can parse it with index.
Instead of using .read()
to intermediately save it to memory and then read it to json
, allow json
to load it directly from the file:
wjdata = json.load(urllib2.urlopen('url'))
Because you have this:
Blowfish(BlowfishAlgorithm algorithm);
It's not a default constructor. The default constructor is one which takes no parameters. i.e.
Blowfish();
As of October 2020:
Tensorflow only supports the 64-bit version of Python
Tensorflow only supports Python 3.5 to 3.8
So, if you're using an out-of-range version of Python (older or newer) or a 32-bit version, then you'll need to use a different version.
My BASIC interpreter chops beginning and ending quotes with
str->pop_back();
str->erase(str->begin());
Of course, I always expect well-formed BASIC style strings, so I will abort with failed assert
if not:
assert(str->front() == '"' && str->back() == '"');
Just my two cents.
When you have Eclipse for Android developement installed:
For those of us using Javascript and looking to get a timezone from a zip code via Google APIs, here is one method.
Note: my understanding is that zipcodes are not unique across countries, so this is likely best suited for use in the USA.
const googleMapsClient; // instantiate your client here
const zipcode = '90210'
const myDateThatNeedsTZAdjustment; // define your date that needs adjusting
// fetch lat/lng from google api by zipcode
const geocodeResponse = await googleMapsClient.geocode({ address: zipcode }).asPromise();
if (geocodeResponse.json.status === 'OK') {
lat = geocodeResponse.json.results[0].geometry.location.lat;
lng = geocodeResponse.json.results[0].geometry.location.lng;
} else {
console.log('Geocode was not successful for the following reason: ' + status);
}
// prepare lat/lng and timestamp of profile created_at to fetch time zone
const location = `${lat},${lng}`;
const timestamp = new Date().valueOf() / 1000;
const timezoneResponse = await googleMapsClient
.timezone({ location: location, timestamp: timestamp })
.asPromise();
const timeZoneId = timezoneResponse.json.timeZoneId;
// adjust by setting timezone
const timezoneAdjustedDate = DateTime.fromJSDate(
myDateThatNeedsTZAdjustment
).setZone(timeZoneId);
There's a bit of confusion in your question:
Date
datatype doesn't save the time zone component. This piece of information is truncated and lost forever when you insert a TIMESTAMP WITH TIME ZONE
into a Date
.TO_CHAR
function. In Oracle, a Date
has no format: it is a point in time.TO_TIMESTAMP_TZ
to convert a VARCHAR2
to a TIMESTAMP
, but this won't convert a Date
to a TIMESTAMP
.FROM_TZ
to add the time zone information to a TIMESTAMP
(or a Date
).CST
is a time zone but CDT
is not. CDT
is a daylight saving information.CST/CDT
(-05:00
) and CST/CST
(-06:00
) will have different values obviously, but the time zone CST
will inherit the daylight saving information depending upon the date by default.So your conversion may not be as simple as it looks.
Assuming that you want to convert a Date
d
that you know is valid at time zone CST/CST
to the equivalent at time zone CST/CDT
, you would use:
SQL> SELECT from_tz(d, '-06:00') initial_ts,
2 from_tz(d, '-06:00') at time zone ('-05:00') converted_ts
3 FROM (SELECT cast(to_date('2012-10-09 01:10:21',
4 'yyyy-mm-dd hh24:mi:ss') as timestamp) d
5 FROM dual);
INITIAL_TS CONVERTED_TS
------------------------------- -------------------------------
09/10/12 01:10:21,000000 -06:00 09/10/12 02:10:21,000000 -05:00
My default timestamp format has been used here. I can specify a format explicitely:
SQL> SELECT to_char(from_tz(d, '-06:00'),'yyyy-mm-dd hh24:mi:ss TZR') initial_ts,
2 to_char(from_tz(d, '-06:00') at time zone ('-05:00'),
3 'yyyy-mm-dd hh24:mi:ss TZR') converted_ts
4 FROM (SELECT cast(to_date('2012-10-09 01:10:21',
5 'yyyy-mm-dd hh24:mi:ss') as timestamp) d
6 FROM dual);
INITIAL_TS CONVERTED_TS
------------------------------- -------------------------------
2012-10-09 01:10:21 -06:00 2012-10-09 02:10:21 -05:00
element.style
:Click on that, and it will open up all the CSS that you have added in the sources panel
Copy and paste it - yay!
element.style
:You can just right-click on your HTML element, click Edit as HTML and then copy and paste the HTML with the inline styles.
If you assume that there can be duplicate values the only way to do this is to put the values in lists, sort them and compare the lists viz:
List<String> values1 = new ArrayList<String>(map1.values());
List<String> values2 = new ArrayList<String>(map2.values());
Collections.sort(values1);
Collections.sort(values2);
boolean mapsHaveEqualValues = values1.equals(values2);
If values cannot contain duplicate values then you can either do the above without the sort using sets.
I read all answers and I think those enough, specially @Michael articles with slow hashing and @CodesInChaos good comments, but I decided to share my code snippet for hashing/validating that may be useful and it does not require [Microsoft.AspNet.Cryptography.KeyDerivation].
private static bool SlowEquals(byte[] a, byte[] b)
{
uint diff = (uint)a.Length ^ (uint)b.Length;
for (int i = 0; i < a.Length && i < b.Length; i++)
diff |= (uint)(a[i] ^ b[i]);
return diff == 0;
}
private static byte[] PBKDF2(string password, byte[] salt, int iterations, int outputBytes)
{
Rfc2898DeriveBytes pbkdf2 = new Rfc2898DeriveBytes(password, salt);
pbkdf2.IterationCount = iterations;
return pbkdf2.GetBytes(outputBytes);
}
private static string CreateHash(string value, int salt_bytes, int hash_bytes, int pbkdf2_iterations)
{
// Generate a random salt
RNGCryptoServiceProvider csprng = new RNGCryptoServiceProvider();
byte[] salt = new byte[salt_bytes];
csprng.GetBytes(salt);
// Hash the value and encode the parameters
byte[] hash = PBKDF2(value, salt, pbkdf2_iterations, hash_bytes);
//You need to return the salt value too for the validation process
return Convert.ToBase64String(hash) + ":" +
Convert.ToBase64String(hash);
}
private static bool ValidateHash(string pureVal, string saltVal, string hashVal, int pbkdf2_iterations)
{
try
{
byte[] salt = Convert.FromBase64String(saltVal);
byte[] hash = Convert.FromBase64String(hashVal);
byte[] testHash = PBKDF2(pureVal, salt, pbkdf2_iterations, hash.Length);
return SlowEquals(hash, testHash);
}
catch (Exception ex)
{
return false;
}
}
Please pay attention SlowEquals function that is so important, Finally, I hope this help and Please don't hesitate to advise me about better approaches.
You really want to do this
flog.write("\nCompany Name: "+ pCompanyName.encode('utf-8'))
This is the "encode late" strategy described in this unicode presentation (slides 32 through 35).
Maybe it's even better if you determine position using indexOf() like this:
function insertString(a, b, at)
{
var position = a.indexOf(at);
if (position !== -1)
{
return a.substr(0, position) + b + a.substr(position);
}
return "substring not found";
}
then call the function like this:
insertString("I want apple", "an ", "apple");
Note, that I put a space after the "an " in the function call, rather than in the return statement.
Limited disk space can cause to this error.
Check your disk space
$ df -h
Try to increase the space if there are 100% used disks.
In my case: I have Vagrant (8.0.1) box (Ubuntu 16.04) My mysql disk capacity was 10GB, I increased it to 20GB
$ sudo lvextend -L20G -r /dev/mapper/homestead--vg-mysql--master
Then restart mysql
$ sudo service mysql restart
-u: disabled by default. When activated, an error message is displayed when using an unconfigured variable.
-v: inactive by default. After activation, the original content of the information will be displayed (without variable resolution) before the information is output.
-x: inactive by default. If activated, the command content will be displayed before the command is run (after variable resolution, there is a ++ symbol).
Compare the following differences:
/ # set -v && echo $HOME
/root
/ # set +v && echo $HOME
set +v && echo $HOME
/root
/ # set -x && echo $HOME
+ echo /root
/root
/ # set +x && echo $HOME
+ set +x
/root
/ # set -u && echo $NOSET
/bin/sh: NOSET: parameter not set
/ # set +u && echo $NOSET
You can use while(in.available() != 0)
instead of while(true)
.
Using angular-google-maps
$scope.bounds = new google.maps.LatLngBounds();
for (var i = $scope.markers.length - 1; i >= 0; i--) {
$scope.bounds.extend(new google.maps.LatLng($scope.markers[i].coords.latitude, $scope.markers[i].coords.longitude));
};
$scope.control.getGMap().fitBounds($scope.bounds);
$scope.control.getGMap().setCenter($scope.bounds.getCenter());
I had reason to do the same thing (programmatically loading a view from a XIB file), but I needed to do this entirely from the context of a subclass of a subclass of a UIView
(i.e. without involving the view controller in any way). To do this I created this utility method:
+ (id) initWithNibName:(NSString *)nibName withSelf:(id)myself {
NSArray *bundle = [[NSBundle mainBundle] loadNibNamed:nibName
owner:myself options:nil];
for (id object in bundle) {
if ([object isKindOfClass:[myself class]]) {
return object;
}
}
return nil;
}
Then I call it from my subclass' initWithFrame
method like so:
- (id)initWithFrame:(CGRect)frame {
self = [Utilities initWithNibName:@"XIB1" withSelf:self];
if (self) {
// Initialization code.
}
return self;
}
Posted for general interest; if anyone sees any problems without doing it this way, please let me know.
there is a CDP Studio IDE available that makes cross compile and deploy quite simple from both windows and linux and you can just check the raspberry toolchain checkbox during the installation. (PS. it has GPIO and I2C support so no code is needed to access those)
The IDE demo of raspberry use is up here: https://youtu.be/4SVZ68sQz5U
and you can download the IDE here: https://cdpstudio.com/home-edition
The documentation on CREATE EVENT is quite good, but it takes a while to get it right.
You have two problems, first, making the event recur, second, making it run at 13:00 daily.
This example creates a recurring event.
CREATE EVENT e_hourly
ON SCHEDULE
EVERY 1 HOUR
COMMENT 'Clears out sessions table each hour.'
DO
DELETE FROM site_activity.sessions;
When in the command-line MySQL client, you can:
SHOW EVENTS;
This lists each event with its metadata, like if it should run once only, or be recurring.
The second problem: pointing the recurring event to a specific schedule item.
By trying out different kinds of expression, we can come up with something like:
CREATE EVENT IF NOT EXISTS `session_cleaner_event`
ON SCHEDULE
EVERY 13 DAY_HOUR
COMMENT 'Clean up sessions at 13:00 daily!'
DO
DELETE FROM site_activity.sessions;
The following is what this would look like inside of .draggable({});
$("#yourDraggable").draggable({
revert: "invalid" ,
start: function(){
$(this).css("opacity",0.3);
},
stop: function(){
$(this).draggable( 'disable' )
},
opacity: 0.7,
helper: function () {
$copy = $(this).clone();
$copy.css({
"list-style":"none",
"width":$(this).outerWidth()
});
return $copy;
},
appendTo: 'body',
scroll: false
});
If you prefer to use style='{'
, fmt="{asctime}.{msecs:0<3.0f}"
will 0-pad your microseconds to three places for consistency.
Execute the following command to check whether a web site is up, and what status message the web server is showing:
curl -Is http://www.google.com | head -1 HTTP/1.1 200 OK
Status code ‘200 OK’ means that the request has succeeded and a website is reachable.
You can also define a variable directly in the PowerShell command line and then execute the script. The variable will be defined there, too. This helped me in a case where I couldn't modify a signed script.
Example:
PS C:\temp> $stepsize = 30
PS C:\temp> .\itunesForward.ps1
with iTunesForward.ps1 being
$iTunes = New-Object -ComObject iTunes.Application
if ($iTunes.playerstate -eq 1)
{
$iTunes.PlayerPosition = $iTunes.PlayerPosition + $stepsize
}
I like to do this by ranking the records by some column. In this case, rank rev
values grouped by id
. Those with higher rev
will have lower rankings. So highest rev
will have ranking of 1.
select id, rev, content
from
(select
@rowNum := if(@prevValue = id, @rowNum+1, 1) as row_num,
id, rev, content,
@prevValue := id
from
(select id, rev, content from YOURTABLE order by id asc, rev desc) TEMP,
(select @rowNum := 1 from DUAL) X,
(select @prevValue := -1 from DUAL) Y) TEMP
where row_num = 1;
Not sure if introducing variables makes the whole thing slower. But at least I'm not querying YOURTABLE
twice.
public class OddEvenPrinetr {
private static Object printOdd = new Object();
public static void main(String[] args) {
Runnable oddPrinter = new Runnable() {
int count = 1;
@Override
public void run() {
while(true){
synchronized (printOdd) {
if(count >= 101){
printOdd.notify();
return;
}
System.out.println(count);
count = count + 2;
try {
printOdd.notify();
printOdd.wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
};
Runnable evenPrinter = new Runnable() {
int count = 0;
@Override
public void run() {
while(true){
synchronized (printOdd) {
printOdd.notify();
if(count >= 100){
return;
}
count = count + 2;
System.out.println(count);
printOdd.notify();
try {
printOdd.wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
};
new Thread(oddPrinter).start();
new Thread(evenPrinter).start();
}
}
Very easy solution (2 min to config) is to use local-ssl-proxy package from npm
The usage is straight pretty forward:
1. Install the package:
npm install -g local-ssl-proxy
2. While running your local-server
mask it with the local-ssl-proxy --source 9001 --target 9000
P.S: Replace --target 9000
with the -- "number of your port"
and --source 9001
with --source "number of your port +1"
If you don't test your private methods, how do you know they won't break?
This code works for me:
Dim script As String = "<script type=""text/javascript"">window.open('" & URL.ToString & "');</script>"
ClientScript.RegisterStartupScript(Me.GetType, "openWindow", script)
You can do it by using window_handles
and switch_to_window
method.
Before clicking the link first store the window handle as
window_before = driver.window_handles[0]
after clicking the link store the window handle of newly opened window as
window_after = driver.window_handles[1]
then execute the switch to window method to move to newly opened window
driver.switch_to_window(window_after)
and similarly you can switch between old and new window. Following is the code example
import unittest
from selenium import webdriver
class GoogleOrgSearch(unittest.TestCase):
def setUp(self):
self.driver = webdriver.Firefox()
def test_google_search_page(self):
driver = self.driver
driver.get("http://www.cdot.in")
window_before = driver.window_handles[0]
print window_before
driver.find_element_by_xpath("//a[@href='http://www.cdot.in/home.htm']").click()
window_after = driver.window_handles[1]
driver.switch_to_window(window_after)
print window_after
driver.find_element_by_link_text("ATM").click()
driver.switch_to_window(window_before)
def tearDown(self):
self.driver.close()
if __name__ == "__main__":
unittest.main()
Might the UNION operator work for you? Have one SELECT for each section, then UNION them together. Guess it would only work for a fixed number of sections though.
you must add 1 day to the end date, using: DATE_ADD('$end_date', INTERVAL 1 DAY)
like this:
/\<word\>
\<
means beginning of a word, and \>
means the end of a word,
Adding @Roe's comment:
VIM provides a shortcut for this. If you already have word on screen and you want to find other instances of it, you can put the cursor on the word and press '*'
to search forward in the file or '#'
to search backwards.
For all those of you that try to remove the separating line of the tabWidget, here is an example project (and its respective tutorial), that work great for customizing the tabs and thus removing problems when tabs are at bottom. Eclipse Project: android-custom-tabs ; Original explanation: blog; Hope this helped.
Try manually:
$ ftp www.domainhere.com
> useridhere
> passwordhere
> put test.txt
> bye
> pause
I had the same problem and after looking around I found this:
SELECT DATENAME(yyyy, date) AS year
FROM Income
GROUP BY DATENAME(yyyy, date)
It's working great!
You can just use return
.
function myfunction() {
if(a == 'stop')
return;
}
This will send a return value of undefined
to whatever called the function.
var x = myfunction();
console.log( x ); // console shows undefined
Of course, you can specify a different return value. Whatever value is returned will be logged to the console using the above example.
return false;
return true;
return "some string";
return 12345;
If I'm understanding correctly, it should be as simple as:
df = df[df.line_race != 0]
All of the answers above may work for the time being but whenever you run maven on the command line or Maven → Update project… the JDK will be reset, this was also the question as I understand it.
To fix this for good add the following code to your pom file. Remember to do a Maven → Update project… afterwards or mvn clean compile
at the command line.
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
</plugins>
</pluginManagement>
</build>
You should check out this plugin:
https://github.com/kemayo/maphilight
and the demo:
http://davidlynch.org/js/maphilight/docs/demo_usa.html
if anything, you might be able to borrow some code from it to fix yours.
Updating a Specific Library - scikit-learn
:
Anaconda (conda
):
conda install scikit-learn
Pip Installs Packages (pip
):
pip install --upgrade scikit-learn
Verify Update:
conda list scikit-learn
It should now display the current (and desired) version of the scikit-learn
library.
For me personally, I tried using the conda
command to update the scikit-learn
library and it acted as if it were installing the latest version to then later discover (with an execution of the conda list scikit-learn
command) that it was the same version as previously and never updated (or recognized the update?). When I used the pip
command, it worked like a charm and correctly updated the scikit-learn
library to the latest version!
Hope this helps!
More in-depth details of latest version can be found here (be mindful this applies to the scikit-learn
library version of 0.22
):
For me this problem started with upgrading react-native. The upgrade was necessary to add 64-bit support.
Before:
--------
Environment:
Node: 10.15.0
npm: 6.9.0
Watchman: 4.9.0
Xcode: Not Found
Android Studio: 3.4 AI-183.6156.11.34.5692245
Packages: (wanted => installed)
react: 16.0.0-alpha.12 => 16.0.0-alpha.12
react-native: ~0.55.2 => 0.55.4
react-native-cli: 2.0.1
After:
------
info
React Native Environment Info:
Binaries:
Node: 10.15.0
npm: 6.9.0
Watchman: 4.9.0
SDKs:
Android SDK:
API Levels: 23, 26, 27, 28
Build Tools: 27.0.3, 28.0.3
System Images: android-28 | Google APIs Intel x86 Atom
IDEs:
Android Studio: 3.4 AI-183.6156.11.34.5692245
Xcode: /undefined - /usr/bin/xcodebuild
npmPackages:
react: ^16.8.6 => 16.9.0
react-native: 0.59.9 => 0.59.9
npmGlobalPackages:
create-react-native-app: 2.0.2
react-native-cli: 2.0.1
Also, One important change that I made for the upgrade was in ../android/build/build.gradle
android {
...
defaultConfig {
...
targetSdkVersion 28
...
}
...
}
I had to change the targetSdkVersion from 27 to 28 following warning when I tried to upload the build(.apk) to goole play console. Little did i realise that this was the root cause of the above error for me. Immediatly answers by @tom and @tinmarfrutos made absolute sense.
I solved the problem by adding android:usesCleartextTraffic="true" to my android/app/src/debug/AndroidManifest.xml
On macOS, you can use DTrace instead. The "Instruments" app is a nice GUI for that, it comes with XCode afaik.
When this happened to me, it was because I'd blindly copied my settings.xml from a template and it still had the blank <localRepository/>
element. This means that there's no local repository used when resolving dependencies (though your installed artifacts do still get put in the default location). When I'd replaced that with <localRepository>${user.home}\.m2\repository</localRepository>
it started working.
For *nix, that would be <localRepository>${user.home}/.m2/repository</localRepository>
, I suppose.
Try
$myLastElement = end($yourArray);
To reset it (thanks @hopeseekr):
reset($yourArray);
Link to manual
@David Murdoch added:
$myLastElement = end(array_values($yourArray));// and now you don't need to call reset().
On E_STRICT this produces the warning
Strict Standards: Only variables should be passed by reference
Thanks o_O Tync and everyone!
You should use java.time classes with Java 8 and later. To use java.time, add:
import java.time.* ;
Below is an example, how you can format date.
DateTimeFormatter format = DateTimeFormatter.ofPattern("dd-MMM-yyyy");
String date = "15-Oct-2018";
LocalDate localDate = LocalDate.parse(date, formatter);
System.out.println(localDate);
System.out.println(formatter.format(localDate));
Here is my answer:
def draw_text(text, font_name, size, color, x, y, align="nw"):
font = pg.font.Font(font_name, size)
text_surface = font.render(text, True, color)
text_rect = text_surface.get_rect()
if align == "nw":
text_rect.topleft = (x, y)
if align == "ne":
text_rect.topright = (x, y)
if align == "sw":
text_rect.bottomleft = (x, y)
if align == "se":
text_rect.bottomright = (x, y)
if align == "n":
text_rect.midtop = (x, y)
if align == "s":
text_rect.midbottom = (x, y)
if align == "e":
text_rect.midright = (x, y)
if align == "w":
text_rect.midleft = (x, y)
if align == "center":
text_rect.center = (x, y)
screen.blit(text_surface, text_rect)
Of course, you'll need to import pygame, a font and a screen, but this is just a def to add on to the rest of the code, and then call "draw_text".
Have you converted your data from string to JavaScript object?
You can do it with data = eval('(' + string_data + ')');
or, which is safer, data = JSON.parse(string_data);
but later will only works in FF 3.5 or if you include json2.js
jQuery since 1.4.1 also have function for that, $.parseJSON()
.
But actually, $.getJSON()
should give you already parsed json object, so you should just check everything thoroughly, there is little mistake buried somewhere, like you might have forgotten to quote something in json, or one of the brackets is missing.
.button_x000D_
{_x000D_
font-size: 13px;_x000D_
color:green;_x000D_
}
_x000D_
<input type="submit" value="Fetch" class="button"/>
_x000D_
This is using a local repository with five simple commits.
? git log --name-only
commit ed080bc88b7bf0c5125e093a26549f3755f7ae74 (HEAD -> master)
Author: My Name <[email protected]>
Date: Mon Oct 21 15:46:04 2019 -0700
mv file4 to file5
file5
commit 5c4e8cfbe3554fe3d7d99b5ae4ba381fa1cdb328
Author: My Name <[email protected]>
Date: Mon Oct 21 15:36:32 2019 -0700
foo file1
really important to foo before the bar
file1
commit 1b6413400b5a6a96d062a7c13109e6325e081c85
Author: My Name <[email protected]>
Date: Mon Oct 21 15:34:37 2019 -0700
foobar file2, rm file3
file2
file3
commit e0dd02ce23977c782987a206236da5ab784543cc
Author: My Name <[email protected]>
Date: Mon Oct 21 15:33:05 2019 -0700
Add file4
file4
commit b58e85692f711d402bae4ca606d3d2262bb76cf1
Author: My Name <[email protected]>
Date: Mon Oct 21 15:32:41 2019 -0700
Added files
file1
file2
file3
? git log --name-status
commit ed080bc88b7bf0c5125e093a26549f3755f7ae74 (HEAD -> master)
Author: My Name <[email protected]>
Date: Mon Oct 21 15:46:04 2019 -0700
mv file4 to file5
R100 file4 file5
commit 5c4e8cfbe3554fe3d7d99b5ae4ba381fa1cdb328
Author: My Name <[email protected]>
Date: Mon Oct 21 15:36:32 2019 -0700
foo file1
really important to foo before the bar
M file1
commit 1b6413400b5a6a96d062a7c13109e6325e081c85
Author: My Name <[email protected]>
Date: Mon Oct 21 15:34:37 2019 -0700
foobar file2, rm file3
M file2
D file3
commit e0dd02ce23977c782987a206236da5ab784543cc
Author: My Name <[email protected]>
Date: Mon Oct 21 15:33:05 2019 -0700
Add file4
A file4
commit b58e85692f711d402bae4ca606d3d2262bb76cf1
Author: My Name <[email protected]>
Date: Mon Oct 21 15:32:41 2019 -0700
Added files
A file1
A file2
A file3
? git log --stat
commit ed080bc88b7bf0c5125e093a26549f3755f7ae74 (HEAD -> master)
Author: My Name <[email protected]>
Date: Mon Oct 21 15:46:04 2019 -0700
mv file4 to file5
file4 => file5 | 0
1 file changed, 0 insertions(+), 0 deletions(-)
commit 5c4e8cfbe3554fe3d7d99b5ae4ba381fa1cdb328
Author: My Name <[email protected]>
Date: Mon Oct 21 15:36:32 2019 -0700
foo file1
really important to foo before the bar
file1 | 3 +++
1 file changed, 3 insertions(+)
commit 1b6413400b5a6a96d062a7c13109e6325e081c85
Author: My Name <[email protected]>
Date: Mon Oct 21 15:34:37 2019 -0700
foobar file2, rm file3
file2 | 1 +
file3 | 0
2 files changed, 1 insertion(+)
commit e0dd02ce23977c782987a206236da5ab784543cc
Author: My Name <[email protected]>
Date: Mon Oct 21 15:33:05 2019 -0700
Add file4
file4 | 0
1 file changed, 0 insertions(+), 0 deletions(-)
commit b58e85692f711d402bae4ca606d3d2262bb76cf1
Author: My Name <[email protected]>
Date: Mon Oct 21 15:32:41 2019 -0700
Added files
file1 | 0
file2 | 0
file3 | 0
3 files changed, 0 insertions(+), 0 deletions(-)
? git log --name-only --oneline
ed080bc (HEAD -> master) mv file4 to file5
file5
5c4e8cf foo file1
file1
1b64134 foobar file2, rm file3
file2
file3
e0dd02c Add file4
file4
b58e856 Added files
file1
file2
file3
? git log --pretty=oneline --graph --name-status
* ed080bc88b7bf0c5125e093a26549f3755f7ae74 (HEAD -> master) mv file4 to file5
| R100 file4 file5
* 5c4e8cfbe3554fe3d7d99b5ae4ba381fa1cdb328 foo file1
| M file1
* 1b6413400b5a6a96d062a7c13109e6325e081c85 foobar file2, rm file3
| M file2
| D file3
* e0dd02ce23977c782987a206236da5ab784543cc Add file4
| A file4
* b58e85692f711d402bae4ca606d3d2262bb76cf1 Added files
A file1
A file2
A file3
? git diff-tree HEAD
ed080bc88b7bf0c5125e093a26549f3755f7ae74
:100644 000000 e69de29bb2d1d6434b8b29ae775ad8c2e48c5391 0000000000000000000000000000000000000000 D file4
:000000 100644 0000000000000000000000000000000000000000 e69de29bb2d1d6434b8b29ae775ad8c2e48c5391 A file5
? git log --stat --pretty=short --graph
* commit ed080bc88b7bf0c5125e093a26549f3755f7ae74 (HEAD -> master)
| Author: My Name <[email protected]>
|
| mv file4 to file5
|
| file4 => file5 | 0
| 1 file changed, 0 insertions(+), 0 deletions(-)
|
* commit 5c4e8cfbe3554fe3d7d99b5ae4ba381fa1cdb328
| Author: My Name <[email protected]>
|
| foo file1
|
| file1 | 3 +++
| 1 file changed, 3 insertions(+)
|
* commit 1b6413400b5a6a96d062a7c13109e6325e081c85
| Author: My Name <[email protected]>
|
| foobar file2, rm file3
|
| file2 | 1 +
| file3 | 0
| 2 files changed, 1 insertion(+)
|
* commit e0dd02ce23977c782987a206236da5ab784543cc
| Author: My Name <[email protected]>
|
| Add file4
|
| file4 | 0
| 1 file changed, 0 insertions(+), 0 deletions(-)
|
* commit b58e85692f711d402bae4ca606d3d2262bb76cf1
Author: My Name <[email protected]>
Added files
file1 | 0
file2 | 0
file3 | 0
3 files changed, 0 insertions(+), 0 deletions(-)
? git log --name-only --pretty=format:
file5
file1
file2
file3
file4
file1
file2
file3
? git log --name-status --pretty=format:
R100 file4 file5
M file1
M file2
D file3
A file4
A file1
A file2
A file3
? git diff --stat 'HEAD^!'
file4 => file5 | 0
1 file changed, 0 insertions(+), 0 deletions(-)
? git show
commit ed080bc88b7bf0c5125e093a26549f3755f7ae74 (HEAD -> master)
Author: My Name <[email protected]>
Date: Mon Oct 21 15:46:04 2019 -0700
mv file4 to file5
diff --git a/file4 b/file5
similarity index 100%
rename from file4
rename to file5
Credits to @CB-Bailey @Peter-Suwara @Gaurav @Omer-Dagan @xsor @Hazok @nrz @ptc
You can add a following method inside your bootstrap class which is annotated with @SpringBootApplication
@Bean
@Primary
public ObjectMapper objectMapper(Jackson2ObjectMapperBuilder builder) {
ObjectMapper objectMapper = builder.createXmlMapper(false).build();
objectMapper.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false);
objectMapper.configure(SerializationFeature.WRITE_DATE_TIMESTAMPS_AS_NANOSECONDS, false);
objectMapper.registerModule(new JodaModule());
return objectMapper;
}
Missing ;
after var_dump($row)
Change this:
`create_date` TIMESTAMP NOT NULL DEFAULT '0000-00-00 00:00:00',
`update_date` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ,
To the following:
`create_date` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ,
`update_date` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP ,
This is a possible generic implementation using a bit of reflection (pseudo-code, don't have VS now):
public class DtoMapper<DtoType>
{
Dictionary<string,PropertyInfo> properties;
public DtoMapper()
{
// Cache property infos
var t = typeof(DtoType);
properties = t.GetProperties().ToDictionary(p => p.Name, p => p);
}
public DtoType Map(Dto dto)
{
var instance = Activator.CreateInstance(typeOf(DtoType));
foreach(var p in properties)
{
p.SetProperty(
instance,
Convert.Type(
p.PropertyType,
dto.Items[Array.IndexOf(dto.ItemsNames, p.Name)]);
return instance;
}
}
Usage:
var mapper = new DtoMapper<Model>();
var modelInstance = mapper.Map(dto);
This will be slow when you create the mapper instance but much faster later.
This is my solution, i have the same issue and its seems like this solution work for me.
yourObj = [].concat(yourObj);
It also important taking in account how you access the Arguments in the code of the application.
In my c# application I used the ServiceBase class:
class MyService : ServiceBase
{
protected override void OnStart(string[] args)
{
}
}
I registered my service using
sc create myService binpath= "MeyService.exe arg1 arg2"
But I couldn't access the arguments through the args
variable when I run it as a service.
The MSDN documentation suggests not using the Main method to retrieve the binPath
or ImagePath
arguments. Instead it suggests placing your logic in the OnStart
method and then using (C#) Environment.GetCommandLineArgs();
.
To access the first arguments arg1
I need to do like this:
class MyService : ServiceBase
{
protected override void OnStart(string[] args)
{
log.Info("arg1 == "+Environment.GetCommandLineArgs()[1]);
}
}
this would print
arg1 == arg1
$('#userZipFiles option').prop('selected', function() {
return this.defaultSelected;
});
in MainActivity call restartActivity Method:
public static void restartActivity(Activity mActivity) {
Intent mIntent = mActivity.getIntent();
mActivity.finish();
mActivity.startActivity(mIntent);
}
For the Mac users.
For selecting all of the code in the document => cmd+A
For formatting selected code => cmd+K, cmd+F
Try the following code:
void clean(char *var) {
int i = 0;
while(var[i] != '\0') {
var[i] = '\0';
i++;
}
}
If you're using VS Code then it'll should unable to watch in large workspace error.
"Visual Studio Code is unable to watch for file changes in this large workspace" (error ENOSPC)
It indicates that the VS Code file watcher is running out of handles because the workspace is large and contains many files. The current limit can be viewed by running:
cat /proc/sys/fs/inotify/max_user_watches
The limit can be increased to its maximum by editing /etc/sysctl.conf
and adding this line to the end of the file:
fs.inotify.max_user_watches=524288
The new value can then be loaded in by running sudo sysctl -p
.
Note: 524288 is the max value to watch the files. Though you can watch any no of files but is also recommended to watch upto that limit only.
I think the biggest confusion is that xml namespace is pointing to some kind of URL that doesn't have any information. But the truth is that the person who invented below namespace:
xmlns:android="http://schemas.android.com/apk/res/android"
could also call it like that:
xmlns:android="asjkl;fhgaslifujhaslkfjhliuqwhrqwjlrknqwljk.rho;il"
This is just a unique identifier. However it is established that you should put there URL that is unique and can potentially point to the specification of used tags/attributes in that namespace. It's not required tho.
Why it should be unique? Because namespaces purpose is to have them unique so the attribute for example called background from your namespace can be distinguished from the background from another namespace.
Because of that uniqueness you do not need to worry that if you create your custom attribute you gonna have name collision.
All the above not working for me.. Because I am using Facebook Ad dependency..
Incase If anybody using this dependency compile 'com.facebook.android:audience-network-sdk:4.16.0'
Try this code instead of above
compile ('com.facebook.android:audience-network-sdk:4.16.0'){
exclude group: 'com.google.android.gms'
}
Actually, jQuery has a built in trim function:
var emailAdd = jQuery.trim($(this).text());
See here for details.
In Docker for Windows (native Windows) the default container storage is at:
> docker info
...
Docker Root Dir: C:\ProgramData\Docker
...
Instead of listening to the scroll event, using Intersection Observer is the inexpensive one for checking if the last element was visible on the viewport (that's mean user was scrolled to the bottom). It also supported for IE7 with the polyfill.
var observer = new IntersectionObserver(function(entries){_x000D_
if(entries[0].isIntersecting === true)_x000D_
console.log("Scrolled to the bottom");_x000D_
else_x000D_
console.log("Not on the bottom");_x000D_
}, {_x000D_
root:document.querySelector('#scrollContainer'),_x000D_
threshold:1 // Trigger only when whole element was visible_x000D_
});_x000D_
_x000D_
observer.observe(document.querySelector('#scrollContainer').lastElementChild);
_x000D_
#scrollContainer{_x000D_
height: 100px;_x000D_
overflow: hidden scroll;_x000D_
}
_x000D_
<div id="scrollContainer">_x000D_
<div>Item 1</div>_x000D_
<div>Item 2</div>_x000D_
<div>Item 3</div>_x000D_
<div>Item 4</div>_x000D_
<div>Item 5</div>_x000D_
<div>Item 6</div>_x000D_
<div>Item 7</div>_x000D_
<div>Item 8</div>_x000D_
<div>Item 9</div>_x000D_
<div>Item 10</div>_x000D_
</div>
_x000D_
Try putting this HTML snippet into your served document:
<img id="ItemPreview" src="">
Then, on JavaScript side, you can dynamically modify image's src
attribute with so-called Data URL.
document.getElementById("ItemPreview").src = "data:image/png;base64," + yourByteArrayAsBase64;
Alternatively, using jQuery:
$('#ItemPreview').attr('src', `data:image/png;base64,${yourByteArrayAsBase64}`);
This assumes that your image is stored in PNG format, which is quite popular. If you use some other image format (e.g. JPEG), modify the MIME type ("image/..."
part) in the URL accordingly.
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