You can simply use:
document.getElementById(button_id).innerText = 'Your text here';
If you want to use HTML formatting, use the innerHTML
property instead.
Quoting from the specification:
The getItem(key) method must return the current value associated with the given key. If the given key does not exist in the list associated with the object then this method must return null.
You should actually check against null
.
if (localStorage.getItem("username") === null) {
//...
}
From java docs(String class source),
/**
* Returns a copy of the string, with leading and trailing whitespace
* omitted.
* <p>
* If this <code>String</code> object represents an empty character
* sequence, or the first and last characters of character sequence
* represented by this <code>String</code> object both have codes
* greater than <code>'\u0020'</code> (the space character), then a
* reference to this <code>String</code> object is returned.
* <p>
* Otherwise, if there is no character with a code greater than
* <code>'\u0020'</code> in the string, then a new
* <code>String</code> object representing an empty string is created
* and returned.
* <p>
* Otherwise, let <i>k</i> be the index of the first character in the
* string whose code is greater than <code>'\u0020'</code>, and let
* <i>m</i> be the index of the last character in the string whose code
* is greater than <code>'\u0020'</code>. A new <code>String</code>
* object is created, representing the substring of this string that
* begins with the character at index <i>k</i> and ends with the
* character at index <i>m</i>-that is, the result of
* <code>this.substring(<i>k</i>, <i>m</i>+1)</code>.
* <p>
* This method may be used to trim whitespace (as defined above) from
* the beginning and end of a string.
*
* @return A copy of this string with leading and trailing white
* space removed, or this string if it has no leading or
* trailing white space.
*/
public String trim() {
int len = count;
int st = 0;
int off = offset; /* avoid getfield opcode */
char[] val = value; /* avoid getfield opcode */
while ((st < len) && (val[off + st] <= ' ')) {
st++;
}
while ((st < len) && (val[off + len - 1] <= ' ')) {
len--;
}
return ((st > 0) || (len < count)) ? substring(st, len) : this;
}
Note that after getting start and length it calls the substring method of String class.
Because I hate repeating complex logic, here's a generic version of Slauma's solution.
Here's my update method. Note that in a detached scenario, sometimes your code will read data and then update it, so it's not always detached.
public async Task UpdateAsync(TempOrder order)
{
order.CheckNotNull(nameof(order));
order.OrderId.CheckNotNull(nameof(order.OrderId));
order.DateModified = _dateService.UtcNow;
if (_context.Entry(order).State == EntityState.Modified)
{
await _context.SaveChangesAsync().ConfigureAwait(false);
}
else // Detached.
{
var existing = await SelectAsync(order.OrderId!.Value).ConfigureAwait(false);
if (existing != null)
{
order.DateModified = _dateService.UtcNow;
_context.TrackChildChanges(order.Products, existing.Products, (a, b) => a.OrderProductId == b.OrderProductId);
await _context.SaveChangesAsync(order, existing).ConfigureAwait(false);
}
}
}
Create these extension methods.
/// <summary>
/// Tracks changes on childs models by comparing with latest database state.
/// </summary>
/// <typeparam name="T">The type of model to track.</typeparam>
/// <param name="context">The database context tracking changes.</param>
/// <param name="childs">The childs to update, detached from the context.</param>
/// <param name="existingChilds">The latest existing data, attached to the context.</param>
/// <param name="match">A function to match models by their primary key(s).</param>
public static void TrackChildChanges<T>(this DbContext context, IList<T> childs, IList<T> existingChilds, Func<T, T, bool> match)
where T : class
{
context.CheckNotNull(nameof(context));
childs.CheckNotNull(nameof(childs));
existingChilds.CheckNotNull(nameof(existingChilds));
// Delete childs.
foreach (var existing in existingChilds.ToList())
{
if (!childs.Any(c => match(c, existing)))
{
existingChilds.Remove(existing);
}
}
// Update and Insert childs.
var existingChildsCopy = existingChilds.ToList();
foreach (var item in childs.ToList())
{
var existing = existingChildsCopy
.Where(c => match(c, item))
.SingleOrDefault();
if (existing != null)
{
// Update child.
context.Entry(existing).CurrentValues.SetValues(item);
}
else
{
// Insert child.
existingChilds.Add(item);
// context.Entry(item).State = EntityState.Added;
}
}
}
/// <summary>
/// Saves changes to a detached model by comparing it with the latest data.
/// </summary>
/// <typeparam name="T">The type of model to save.</typeparam>
/// <param name="context">The database context tracking changes.</param>
/// <param name="model">The model object to save.</param>
/// <param name="existing">The latest model data.</param>
public static void SaveChanges<T>(this DbContext context, T model, T existing)
where T : class
{
context.CheckNotNull(nameof(context));
model.CheckNotNull(nameof(context));
context.Entry(existing).CurrentValues.SetValues(model);
context.SaveChanges();
}
/// <summary>
/// Saves changes to a detached model by comparing it with the latest data.
/// </summary>
/// <typeparam name="T">The type of model to save.</typeparam>
/// <param name="context">The database context tracking changes.</param>
/// <param name="model">The model object to save.</param>
/// <param name="existing">The latest model data.</param>
/// <param name="cancellationToken">A cancellation token to cancel the operation.</param>
/// <returns></returns>
public static async Task SaveChangesAsync<T>(this DbContext context, T model, T existing, CancellationToken cancellationToken = default)
where T : class
{
context.CheckNotNull(nameof(context));
model.CheckNotNull(nameof(context));
context.Entry(existing).CurrentValues.SetValues(model);
await context.SaveChangesAsync(cancellationToken).ConfigureAwait(false);
}
While Loop:
while(test-condition)
{
statements;
increment/decrement;
}
Do While Loop:
do
{
statements;
increment/decrement;
}while(test-condition);
Find out more on this topic here: Difference Between While and Do While Loop
This is valid for C programming, Java programming and other languages as well because the concepts remain the same, only the syntax changes.
Also, another small but a differentiating factor to note is that the do while loop consists of a semicolon at the end of the while condition.
i created a custom dialog API. check it out here https://github.com/MarkMyWord03/CustomDialog. It supports message and confirmation box. input and option dialog just like in joptionpane will be implemented soon.
Sample Error Dialog from CUstomDialog API: CustomDialog Error Message
CDATA tells the browser to display the text as is and not to render it as an HTML.
from
a directory_of_modules
, you can import
a specific_module.py
specific_module.py
, can contain a Class
with some_methods()
or just functions()
specific_module.py
, you can instantiate a Class
or call functions()
Class
, you can execute some_method()
Example:
#!/usr/bin/python3
from directory_of_modules import specific_module
instance = specific_module.DbConnect("username","password")
instance.login()
Excerpts from PEP 8 - Style Guide for Python Code:
Modules should have short and all-lowercase names.
Notice: Underscores can be used in the module name if it improves readability.
A Python module is simply a source file(*.py), which can expose:
Class: names using the "CapWords" convention.
Function: names in lowercase, words separated by underscores.
Global Variables: the conventions are about the same as those for Functions.
I was having the same issue and had installed openjdk-8-jdk
as suggested. Checking javac -version
resulted in the correct version, but java -version
showed version 11.
The solution was to use:
sudo update-alternatives --config java
and select version 8 from the menu.
It sounds like you are using Visual Studio's Web Compiler extension. There is an open issue for this found here: https://github.com/madskristensen/WebCompiler/issues/413
There is a workaround posted in that issue:
C:\Users\USERNAME\AppData\Local\Temp\WebCompilerX.X.X
(X is the version of WebCompiler)node_modules
folder: caniuse-lite
and browserslist
Open up CMD (inside C:\Users\USERNAME\AppData\Local\Temp\WebCompilerX.X.X
) and run: npm i caniuse-lite browserslist
Haven't you heard about the Comparable
interface being implemented by String
? If no, try to use
"abcda".compareTo("abcza")
And it will output a good root for a solution to your problem.
I know this is not an ideal question to answer but as the OP seems to be a beginner, I'd love to share some basic knowledge with him... Hope everybody understands
OP, you can convert a string to type Boolean
by using any of the methods stated below:
string sample = "True";
bool myBool = bool.Parse(sample);
///or
bool myBool = Convert.ToBoolean(sample);
bool.Parse
expects one parameter which in this case is sample
, .ToBoolean
also expects one parameter.
You can use TryParse
which is the same as Parse
but it doesn't throw any exception :)
string sample = "false";
Boolean myBool;
if (Boolean.TryParse(sample , out myBool))
{
}
Please note that you cannot convert any type of string to type Boolean
because the value of a Boolean
can only be True
or False
Hope you understand :)
SQLite supports a limited subset of ALTER TABLE. The ALTER TABLE command in SQLite allows the user to rename a table or to add a new column to an existing table. It is not possible to rename a column, remove a column, or add or remove constraints from a table. But you can alter table column datatype or other property by the following steps.
For more detail you can refer the link.
setattr()
We use setattr to add an attribute to our class instance. We pass the class instance, the attribute name, and the value.
getattr()
With getattr we retrive these values
For example
Employee = type("Employee", (object,), dict())
employee = Employee()
# Set salary to 1000
setattr(employee,"salary", 1000 )
# Get the Salary
value = getattr(employee, "salary")
print(value)
I have implemented this way and it works.It is much easier than all that is reported.
We have two activities : one is the main and another is the secondary.
In secondary activity, which is where we want to end the main activity , define the following variable:
public static Activity ACTIVIDAD;
And then the following method:
public static void enlaceActividadPrincipal(Activity actividad)
{
tuActividad.ACTIVIDAD=actividad;
}
Then, in your main activity from the onCreate
method , you make the call:
actividadSecundaria.enlaceActividadPrincipal(this);
Now, you're in control. Now, from your secondary activity, you can complete the main activity. Finish calling the function, like this:
ACTIVIDAD.finish();
You have the noclobber
option set. The error looks like it's from csh, so you would do:
cat /dev/null >! file
If I'm wrong and you are using bash, you should do:
cat /dev/null >| file
in bash, you can also shorten that to:
>| file
What you need to do is this:
Settings | About Phone
Scroll to the bottom to build number
.
Tap on build number about 7 times. Each time you will get a popup message saying you are x steps away from being a developer
When you get to the final step you will get a message saying now you are a developer
Go back into settings and you will see a new setting Developer options
there you will see a lot of options for developers. Enable USB debugging
Re-connect you phone to the usb, and you should see you device under adb devices
.
I hope this answer helps someone else.
What ultimately worked for me was the following steps:
Maybe something like this:
SELECT count(*) FROM user_tab_columns WHERE table_name = 'FOO'
this will count number of columns in a the table FOO
You can also just
select count(*) from all_tab_columns where owner='BAR' and table_name='FOO';
where the owner is schema and note that Table Names are upper case
Use element.querySelector(). Lets assume: 'myElement' is the parent element you already have. 'sonClassName' is the class of the child you are looking for.
let child = myElement.querySelector('.sonClassName');
For more info, visit: https://developer.mozilla.org/en-US/docs/Web/API/Element/querySelector
The second (assuming you means CONTAINS
, and actually put it in a valid query) should be faster, because it can use some form of index (in this case, a full text index). Of course, this form of query is only available if the column is in a full text index. If it isn't, then only the first form is available.
The first query, using LIKE, will be unable to use an index, since it starts with a wildcard, so will always require a full table scan.
The CONTAINS
query should be:
SELECT * FROM table WHERE CONTAINS(Column, 'test');
The problem is related to AppCompat library. With it, you have
xmlns:appname="http://schemas.android.com/apk/res-auto"
and possibly:
appname:showAsAction="never"
in menu.xml file.
Without the lib, you can only have:
android:showAsAction="never"
and my app works with menu both on Android 4.3 and 2.3.3.
And remember to use parenthesis!
Keep in mind that &
operator takes a precedence over operators such as >
or <
etc. That is why
4 < 5 & 6 > 4
evaluates to False
. Therefore if you're using pd.loc
, you need to put brackets around your logical statements, otherwise you get an error. That's why do:
df.loc[(df['A'] > 10) & (df['B'] < 15)]
instead of
df.loc[df['A'] > 10 & df['B'] < 15]
which would result in
TypeError: cannot compare a dtyped [float64] array with a scalar of type [bool]
Based on the existing answers, here's a step-by-step guide to sending automated e-mails over SMTP, using a GMail account, from the command line, without disclosing the password.
First, install the following software packages:
These instructions assume a Linux operating system, but should be reasonably easy to port to Windows (via Cygwin or native equivalents), or other operating system.
Save the following shell script as authentication.sh
:
#!/bin/bash
# Asks for a username and password, then spits out the encoded value for
# use with authentication against SMTP servers.
echo -n "Email (shown): "
read email
echo -n "Password (hidden): "
read -s password
echo
TEXT="\0$email\0$password"
echo -ne $TEXT | base64
Make it executable and run it as follows:
chmod +x authentication.sh
./authentication.sh
When prompted, provide your e-mail address and password. This will look something like:
Email (shown): [email protected]
Password (hidden):
AGJvYkBnbWFpbC5jb20AYm9iaXN0aGViZXN0cGVyc29uZXZlcg==
Copy the last line (AGJ...==
), as this will be used for authentication.
Save the following expect script as notify.sh
(note the first line refers to the expect program):
#!/usr/bin/expect
set address "[lindex $argv 0]"
set subject "[lindex $argv 1]"
set ts_date "[lindex $argv 2]"
set ts_time "[lindex $argv 3]"
set timeout 10
spawn openssl s_client -connect smtp.gmail.com:465 -crlf -ign_eof
expect "220" {
send "EHLO localhost\n"
expect "250" {
send "AUTH PLAIN YOUR_AUTHENTICATION_CODE\n"
expect "235" {
send "MAIL FROM: <YOUR_EMAIL_ADDRESS>\n"
expect "250" {
send "RCPT TO: <$address>\n"
expect "250" {
send "DATA\n"
expect "354" {
send "Subject: $subject\n\n"
send "Email sent on $ts_date at $ts_time.\n"
send "\n.\n"
expect "250" {
send "quit\n"
}
}
}
}
}
}
}
Make the following changes:
YOUR_AUTHENTICATION_CODE
with the authentication code generated by the authentication script.YOUR_EMAIL_ADDRESS
with the e-mail address used to generate the authentication code.For example (note the angle brackets are retained for the e-mail address):
send "AUTH PLAIN AGJvYkBnbWFpbC5jb20AYm9iaXN0aGViZXN0cGVyc29uZXZlcg==\n"
send "MAIL FROM: <[email protected]>\n"
Lastly, make the notify script executable as follows:
chmod +x notify.sh
Send an e-mail from the command line as follows:
./notify.sh [email protected] "Command Line" "March 14" "15:52"
Rather than using res.send(404)
as in old versions of Express, the new method is:
res.sendStatus(404);
Express will send a very basic 404 response with "Not Found" text:
HTTP/1.1 404 Not Found
X-Powered-By: Express
Vary: Origin
Content-Type: text/plain; charset=utf-8
Content-Length: 9
ETag: W/"9-nR6tc+Z4+i9RpwqTOwvwFw"
Date: Fri, 23 Oct 2015 20:08:19 GMT
Connection: keep-alive
Not Found
Redis has configuration parameter pidfile
(e.g. /etc/redis.conf - check redis source code), for example:
# If a pid file is specified, Redis writes it where specified at startup
# and removes it at exit.
#
# When the server runs non daemonized, no pid file is created if none is
# specified in the configuration. When the server is daemonized, the pid file
# is used even if not specified, defaulting to "/var/run/redis.pid".
#
pidfile /var/run/redis.pid
If it is set or could be set, instead of searching for process id (pid) by using ps + grep
something like this could be used:
kill $(cat /var/run/redis.pid)
If required one can make redis stop script like this (adapted default redis 5.0 init.d script in redis source code):
PIDFILE=/var/run/redis.pid
if [ ! -f $PIDFILE ]
then
echo "$PIDFILE does not exist, process is not running"
else
PID=$(cat $PIDFILE)
echo "Stopping ..."
kill $PID
while [ -x /proc/${PID} ]
do
echo "Waiting for Redis to shutdown ..."
sleep 1
done
echo "Redis stopped"
fi
The answer of ADTC works fine, but I've find another solution, so I post it here if someone wants something different.
I think ADTC's solution is better, but mine's also works.
Here is the other solution I found
select p.name
from person p
where instr(p.name,chr(8211)) > 0; --contains the character chr(8211)
--at least 1 time
Thank you.
1)
total = 0;
for i=1:size(A,1)
for j=1:size(A,2)
total = total + A(i,j);
end
end
2)
total = sum(A(:));
This will do:
#include <fstream>
#include <iostream>
using std::fstream;
int main(int argc, char *argv[]) {
fstream file;
file.open("test.txt",std::ios::out);
file << fflush;
file.close();
}
Just assuming this is for a regular expression, use re.escape
.
This is one of the huge benefits of using the machine.config. At my last job, we had development, test and production environments. We could use the machine.config for things like connection strings (to the appropriate, dev/test/prod SQL machine).
This may not be a solution for you if you don't have access to the actual production machine (like, if you were using a hosting company on a shared host).
This is a year-and-a-half after the fact, but I too, needed to be able to .transform()
multiple pandas dataframe columns at once (and be able to .inverse_transform()
them as well). This expands upon the excellent suggestion of @PriceHardman above:
class MultiColumnLabelEncoder(LabelEncoder):
"""
Wraps sklearn LabelEncoder functionality for use on multiple columns of a
pandas dataframe.
"""
def __init__(self, columns=None):
self.columns = columns
def fit(self, dframe):
"""
Fit label encoder to pandas columns.
Access individual column classes via indexig `self.all_classes_`
Access individual column encoders via indexing
`self.all_encoders_`
"""
# if columns are provided, iterate through and get `classes_`
if self.columns is not None:
# ndarray to hold LabelEncoder().classes_ for each
# column; should match the shape of specified `columns`
self.all_classes_ = np.ndarray(shape=self.columns.shape,
dtype=object)
self.all_encoders_ = np.ndarray(shape=self.columns.shape,
dtype=object)
for idx, column in enumerate(self.columns):
# fit LabelEncoder to get `classes_` for the column
le = LabelEncoder()
le.fit(dframe.loc[:, column].values)
# append the `classes_` to our ndarray container
self.all_classes_[idx] = (column,
np.array(le.classes_.tolist(),
dtype=object))
# append this column's encoder
self.all_encoders_[idx] = le
else:
# no columns specified; assume all are to be encoded
self.columns = dframe.iloc[:, :].columns
self.all_classes_ = np.ndarray(shape=self.columns.shape,
dtype=object)
for idx, column in enumerate(self.columns):
le = LabelEncoder()
le.fit(dframe.loc[:, column].values)
self.all_classes_[idx] = (column,
np.array(le.classes_.tolist(),
dtype=object))
self.all_encoders_[idx] = le
return self
def fit_transform(self, dframe):
"""
Fit label encoder and return encoded labels.
Access individual column classes via indexing
`self.all_classes_`
Access individual column encoders via indexing
`self.all_encoders_`
Access individual column encoded labels via indexing
`self.all_labels_`
"""
# if columns are provided, iterate through and get `classes_`
if self.columns is not None:
# ndarray to hold LabelEncoder().classes_ for each
# column; should match the shape of specified `columns`
self.all_classes_ = np.ndarray(shape=self.columns.shape,
dtype=object)
self.all_encoders_ = np.ndarray(shape=self.columns.shape,
dtype=object)
self.all_labels_ = np.ndarray(shape=self.columns.shape,
dtype=object)
for idx, column in enumerate(self.columns):
# instantiate LabelEncoder
le = LabelEncoder()
# fit and transform labels in the column
dframe.loc[:, column] =\
le.fit_transform(dframe.loc[:, column].values)
# append the `classes_` to our ndarray container
self.all_classes_[idx] = (column,
np.array(le.classes_.tolist(),
dtype=object))
self.all_encoders_[idx] = le
self.all_labels_[idx] = le
else:
# no columns specified; assume all are to be encoded
self.columns = dframe.iloc[:, :].columns
self.all_classes_ = np.ndarray(shape=self.columns.shape,
dtype=object)
for idx, column in enumerate(self.columns):
le = LabelEncoder()
dframe.loc[:, column] = le.fit_transform(
dframe.loc[:, column].values)
self.all_classes_[idx] = (column,
np.array(le.classes_.tolist(),
dtype=object))
self.all_encoders_[idx] = le
return dframe.loc[:, self.columns].values
def transform(self, dframe):
"""
Transform labels to normalized encoding.
"""
if self.columns is not None:
for idx, column in enumerate(self.columns):
dframe.loc[:, column] = self.all_encoders_[
idx].transform(dframe.loc[:, column].values)
else:
self.columns = dframe.iloc[:, :].columns
for idx, column in enumerate(self.columns):
dframe.loc[:, column] = self.all_encoders_[idx]\
.transform(dframe.loc[:, column].values)
return dframe.loc[:, self.columns].values
def inverse_transform(self, dframe):
"""
Transform labels back to original encoding.
"""
if self.columns is not None:
for idx, column in enumerate(self.columns):
dframe.loc[:, column] = self.all_encoders_[idx]\
.inverse_transform(dframe.loc[:, column].values)
else:
self.columns = dframe.iloc[:, :].columns
for idx, column in enumerate(self.columns):
dframe.loc[:, column] = self.all_encoders_[idx]\
.inverse_transform(dframe.loc[:, column].values)
return dframe.loc[:, self.columns].values
Example:
If df
and df_copy()
are mixed-type pandas
dataframes, you can apply the MultiColumnLabelEncoder()
to the dtype=object
columns in the following way:
# get `object` columns
df_object_columns = df.iloc[:, :].select_dtypes(include=['object']).columns
df_copy_object_columns = df_copy.iloc[:, :].select_dtypes(include=['object']).columns
# instantiate `MultiColumnLabelEncoder`
mcle = MultiColumnLabelEncoder(columns=object_columns)
# fit to `df` data
mcle.fit(df)
# transform the `df` data
mcle.transform(df)
# returns output like below
array([[1, 0, 0, ..., 1, 1, 0],
[0, 5, 1, ..., 1, 1, 2],
[1, 1, 1, ..., 1, 1, 2],
...,
[3, 5, 1, ..., 1, 1, 2],
# transform `df_copy` data
mcle.transform(df_copy)
# returns output like below (assuming the respective columns
# of `df_copy` contain the same unique values as that particular
# column in `df`
array([[1, 0, 0, ..., 1, 1, 0],
[0, 5, 1, ..., 1, 1, 2],
[1, 1, 1, ..., 1, 1, 2],
...,
[3, 5, 1, ..., 1, 1, 2],
# inverse `df` data
mcle.inverse_transform(df)
# outputs data like below
array([['August', 'Friday', '2013', ..., 'N', 'N', 'CA'],
['April', 'Tuesday', '2014', ..., 'N', 'N', 'NJ'],
['August', 'Monday', '2014', ..., 'N', 'N', 'NJ'],
...,
['February', 'Tuesday', '2014', ..., 'N', 'N', 'NJ'],
['April', 'Tuesday', '2014', ..., 'N', 'N', 'NJ'],
['March', 'Tuesday', '2013', ..., 'N', 'N', 'NJ']], dtype=object)
# inverse `df_copy` data
mcle.inverse_transform(df_copy)
# outputs data like below
array([['August', 'Friday', '2013', ..., 'N', 'N', 'CA'],
['April', 'Tuesday', '2014', ..., 'N', 'N', 'NJ'],
['August', 'Monday', '2014', ..., 'N', 'N', 'NJ'],
...,
['February', 'Tuesday', '2014', ..., 'N', 'N', 'NJ'],
['April', 'Tuesday', '2014', ..., 'N', 'N', 'NJ'],
['March', 'Tuesday', '2013', ..., 'N', 'N', 'NJ']], dtype=object)
You can access individual column classes, column labels, and column encoders used to fit each column via indexing:
mcle.all_classes_
mcle.all_encoders_
mcle.all_labels_
For Kotlin users:
override fun onCreateView(
inflater: LayoutInflater,
container: ViewGroup?,
savedInstanceState: Bundle?) : View?
{
// Inflate the layout for this fragment
var myView = inflater.inflate(R.layout.fragment_home, container, false)
var btn_test = myView.btn_test as Button
btn_test.setOnClickListener {
textView.text = "hunny home fragment"
}
return myView
}
Based on the suggestion of using the PushbackInputStream, you'll find an exemple implementation here:
/**
* @author Lorber Sebastien <i>([email protected])</i>
*/
public class NonEmptyInputStream extends FilterInputStream {
/**
* Once this stream has been created, do not consume the original InputStream
* because there will be one missing byte...
* @param originalInputStream
* @throws IOException
* @throws EmptyInputStreamException
*/
public NonEmptyInputStream(InputStream originalInputStream) throws IOException, EmptyInputStreamException {
super( checkStreamIsNotEmpty(originalInputStream) );
}
/**
* Permits to check the InputStream is empty or not
* Please note that only the returned InputStream must be consummed.
*
* see:
* http://stackoverflow.com/questions/1524299/how-can-i-check-if-an-inputstream-is-empty-without-reading-from-it
*
* @param inputStream
* @return
*/
private static InputStream checkStreamIsNotEmpty(InputStream inputStream) throws IOException, EmptyInputStreamException {
Preconditions.checkArgument(inputStream != null,"The InputStream is mandatory");
PushbackInputStream pushbackInputStream = new PushbackInputStream(inputStream);
int b;
b = pushbackInputStream.read();
if ( b == -1 ) {
throw new EmptyInputStreamException("No byte can be read from stream " + inputStream);
}
pushbackInputStream.unread(b);
return pushbackInputStream;
}
public static class EmptyInputStreamException extends RuntimeException {
public EmptyInputStreamException(String message) {
super(message);
}
}
}
And here are some passing tests:
@Test(expected = EmptyInputStreamException.class)
public void test_check_empty_input_stream_raises_exception_for_empty_stream() throws IOException {
InputStream emptyStream = new ByteArrayInputStream(new byte[0]);
new NonEmptyInputStream(emptyStream);
}
@Test
public void test_check_empty_input_stream_ok_for_non_empty_stream_and_returned_stream_can_be_consummed_fully() throws IOException {
String streamContent = "HELLooooô wörld";
InputStream inputStream = IOUtils.toInputStream(streamContent, StandardCharsets.UTF_8);
inputStream = new NonEmptyInputStream(inputStream);
assertThat(IOUtils.toString(inputStream,StandardCharsets.UTF_8)).isEqualTo(streamContent);
}
You can write a Generic function to check Null and include default value when it is NULL. Call this when reading Datareader
public T CheckNull<T>(object obj)
{
return (obj == DBNull.Value ? default(T) : (T)obj);
}
When reading the Datareader use
while (dr.Read())
{
tblBPN_InTrRecon Bpn = new tblBPN_InTrRecon();
Bpn.BPN_Date = CheckNull<DateTime?>(dr["BPN_Date"]);
Bpn.Cust_Backorder_Qty = CheckNull<int?>(dr["Cust_Backorder_Qty"]);
Bpn.Cust_Min = CheckNull<int?>(dr["Cust_Min"]);
}
Check here: http://www.allapplabs.com/java_design_patterns/abstract_factory_pattern.htm it seems that Factory method uses a particular class(not abstract) as a base class while Abstract factory uses an abstract class for this. Also if using an interface instead of abstract class the result will be a different implementation of Abstract Factory pattern.
:D
Consider the easy, lightweight Java library EasyFlow. From their docs:
With EasyFlow you can:
- implement complex logic but keep your code simple and clean
- handle asynchronous calls with ease and elegance
- avoid concurrency by using event-driven programming approach
- avoid StackOverflow error by avoiding recursion
- simplify design, programming and testing of complex java applications
You told your repository to rebase. It looks like you were on a commit (identified by SHA 9c168a5) and then did git rebase master
or git pull --rebase master
.
You are rebasing the branch master onto that commit. You can end the rebase via git rebase --abort
. This would put back at the state that you were at before you started rebasing.
Follow @reVerse answer but in my case, I already had some property in my AppTheme
like
<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
...
<item name="android:textColor">#111</item>
<item name="android:textSize">13sp</item>
</style>
I solved it by
1) Change the import from android.app.AlertDialog
to
android.support.v7.app.AlertDialog
2) I override 2 property in AppTheme
with null value
<style name="MyAlertDialogStyle" parent="Theme.AppCompat.Light.Dialog.Alert">
<!-- Used for the buttons -->
<item name="colorAccent">#FFC107</item>
<!-- Used for the title and text -->
<item name="android:textColorPrimary">#FFFFFF</item>
<!-- Used for the background -->
<item name="android:background">#4CAF50</item>
<item name="android:textColor">@null</item>
<item name="android:textSize">@null</item>
</style>
.
AlertDialog.Builder builder = new AlertDialog.Builder(mContext, R.style.MyAlertDialogStyle);
Hope it help another people
This answer complements the many great existing answers in the following ways:
The existing answers are packaged into flexible shell functions:
stdin
input, but alternatively also filename argumentsSIGPIPE
in the usual way (quiet termination with exit code 141
), as opposed to breaking noisily. This is important when piping the function output to a pipe that is closed early, such as when piping to head
.A performance comparison is made.
awk
, sort
, and cut
, adapted from the OP's own answer:shuf() { awk 'BEGIN {srand(); OFMT="%.17f"} {print rand(), $0}' "$@" |
sort -k1,1n | cut -d ' ' -f2-; }
shuf() { perl -MList::Util=shuffle -e 'print shuffle(<>);' "$@"; }
shuf() { python -c '
import sys, random, fileinput; from signal import signal, SIGPIPE, SIG_DFL;
signal(SIGPIPE, SIG_DFL); lines=[line for line in fileinput.input()];
random.shuffle(lines); sys.stdout.write("".join(lines))
' "$@"; }
See the bottom section for a Windows version of this function.
shuf() { ruby -e 'Signal.trap("SIGPIPE", "SYSTEM_DEFAULT");
puts ARGF.readlines.shuffle' "$@"; }
Performance comparison:
Note: These numbers were obtained on a late-2012 iMac with 3.2 GHz Intel Core i5 and a Fusion Drive, running OSX 10.10.3. While timings will vary with OS used, machine specs, awk
implementation used (e.g., the BSD awk
version used on OSX is usually slower than GNU awk
and especially mawk
), this should provide a general sense of relative performance.
Input file is a 1-million-lines file produced with seq -f 'line %.0f' 1000000
.
Times are listed in ascending order (fastest first):
shuf
0.090s
0.289s
0.589s
1.342s
with Python 2.7.6; 2.407s
(!) with Python 3.4.2awk
+ sort
+ cut
3.003s
with BSD awk
; 2.388s
with GNU awk
(4.1.1); 1.811s
with mawk
(1.3.4); For further comparison, the solutions not packaged as functions above:
sort -R
(not a true shuffle if there are duplicate input lines)
10.661s
- allocating more memory doesn't seem to make a difference24.229s
bash
loops + sort
32.593s
Conclusions:
shuf
, if you can - it's the fastest by far.awk
+ sort
+ cut
combo as a last resort; which awk
implementation you use matters (mawk
is faster than GNU awk
, BSD awk
is slowest).sort -R
, bash
loops, and Scala.Windows versions of the Python solution (the Python code is identical, except for variations in quoting and the removal of the signal-related statements, which aren't supported on Windows):
$OutputEncoding
if you want to send non-ASCII characters via the pipeline):# Call as `shuf someFile.txt` or `Get-Content someFile.txt | shuf`
function shuf {
$Input | python -c @'
import sys, random, fileinput;
lines=[line for line in fileinput.input()];
random.shuffle(lines); sys.stdout.write(''.join(lines))
'@ $args
}
Note that PowerShell can natively shuffle via its Get-Random
cmdlet (though performance may be a problem); e.g.:
Get-Content someFile.txt | Get-Random -Count ([int]::MaxValue)
cmd.exe
(a batch file):Save to file shuf.cmd
, for instance:
@echo off
python -c "import sys, random, fileinput; lines=[line for line in fileinput.input()]; random.shuffle(lines); sys.stdout.write(''.join(lines))" %*
You literally just pass them in std::thread(func1,a,b,c,d);
that should have compiled if the objects existed, but it is wrong for another reason. Since there is no object created you cannot join or detach the thread and the program will not work correctly. Since it is a temporary the destructor is immediately called, since the thread is not joined or detached yet std::terminate
is called. You could std::join
or std::detach
it before the temp is destroyed, like std::thread(func1,a,b,c,d).join();//or detach
.
This is how it should be done.
std::thread t(func1,a,b,c,d);
t.join();
You could also detach the thread, read-up on threads if you don't know the difference between joining and detaching.
This is really similar to another question. How should I load files into my Java application?
How should I load my files into my Java Application?
You do not want to load your files in by:
C:\your\project\file.txt
this is bad!
You should use getResourceAsStream.
InputStream inputStream = YourClass.class.getResourceAsStream(“file.txt”);
And also you should use File.separator; which is the system-dependent name-separator character, represented as a string for convenience.
You can send mail from localhost with sendmail package , sendmail package is inbuild in XAMPP. So if you are using XAMPP then you can easily send mail from localhost.
for example you can configure C:\xampp\php\php.ini
and c:\xampp\sendmail\sendmail.ini
for gmail to send mail.
in C:\xampp\php\php.ini
find extension=php_openssl.dll
and remove the semicolon from the beginning of that line to make SSL working for gmail for localhost.
in php.ini file find [mail function]
and change
SMTP=smtp.gmail.com
smtp_port=587
sendmail_from = [email protected]
sendmail_path = "\"C:\xampp\sendmail\sendmail.exe\" -t"
Now Open C:\xampp\sendmail\sendmail.ini
. Replace all the existing code in sendmail.ini with following code
[sendmail]
smtp_server=smtp.gmail.com
smtp_port=587
error_logfile=error.log
debug_logfile=debug.log
[email protected]
auth_password=my-gmail-password
[email protected]
Now you have done!! create php file with mail function and send mail from localhost.
PS: don't forgot to replace my-gmail-id and my-gmail-password in above code.
Also, don't forget to remove duplicate keys if you copied settings from above. For example comment following line if there is another sendmail_path : sendmail_path="C:\xampp\mailtodisk\mailtodisk.exe"
in the php.ini file
Also remember to restart the server using the XAMMP control panel so the changes take effect.
For gmail please check https://support.google.com/accounts/answer/6010255 to allow access from less secure apps.
To send email on Linux (with sendmail package) through Gmail from localhost please check PHP+Ubuntu Send email using gmail form localhost.
While the answer by Jürgen Weigert essentially covers this solution, it wasn't clear to me at first what was being described there. So I'll add my take on it, in case anyone else needs clarification.
First off, the relevant documentation is the X security manpage.
Numerous online sources suggest just mounting the X11 unix socket and the ~/.Xauthority
file into the container. These solutions often work by luck, without really understanding why, e.g. the container user ends up with the same UID as the user, so there's no need for magic key authorization.
First off, the Xauthority file has mode 0600, so the container user won't be able to read it unless it has the same UID.
Even if you copy the file into the container, and change the ownership, there's still another problem. If you run xauth list
on the host and container, with the same Xauthority
file, you'll see different entries listed. This is because xauth
filters the entries depending on where it's run.
The X client in the container (i.e. GUI app) will behave the same as xauth
. In other words, it doesn't see the magic cookie for the X session running on the user's desktop. Instead, it sees the entries for all the "remote" X sessions you've opened previously (explained below).
So, what you need to do is add a new entry with the hostname of the container and the same hex key as the host cookie (i.e. the X session running on your desktop), e.g.:
containerhostname/unix:0 MIT-MAGIC-COOKIE-1 <shared hex key>
The catch is that the cookie has to be added with xauth add
inside the container:
touch ~/.Xauthority
xauth add containerhostname/unix:0 . <shared hex key>
Otherwise, xauth
tags it in a way that it's only seen outside the container.
The format for this command is:
xauth add hostname/$DISPLAY protocol hexkey
Where .
represents the MIT-MAGIC-COOKIE-1
protocol.
Note: There's no need to copy or bind-mount .Xauthority
into the container. Just create a blank file, as shown, and add the cookie.
Jürgen Weigert's answer gets around this by using the FamilyWild
connection type to create a new authority file on the host and copy it into the container. Note that it first extracts the hex key for the current X session from ~/.Xauthority
using xauth nlist
.
So the essential steps are:
FamilyWild
connection type). I admit that I don't understand very well how FamilyWild
works, or how xauth
or X clients filter entries from the Xauthority file depending where they're run. Additional information on this is welcome.
If you want to distribute your Docker app, you'll need a start script for running the container that gets the hex key for the user's X session, and imports it into the container in one of the two ways explained previously.
It also helps to understand the mechanics of the authorization process:
$DISPLAY
. /tmp/.X11-unix
directory mounted in the container.Note: The X11 Unix socket still needs to be mounted in the container, or the container will have no route to the X server. Most distributions disable TCP access to the X server by default for security reasons.
For additional information, and to better grasp how the X client/server relationship works, it's also helpful to look at the example case of SSH X forwarding:
$DISPLAY
in the SSH session to point to its own X server. xauth
to create a new cookie for the remote host, and adds it to the Xauthority
files for both the local and remote users. You can calculate the total (and from that the desired percentage) by using a subquery in the FROM clause:
SELECT Name,
SUM(Value) AS "SUM(VALUE)",
SUM(Value) / totals.total AS "% of Total"
FROM table1,
(
SELECT Name,
SUM(Value) AS total
FROM table1
GROUP BY Name
) AS totals
WHERE table1.Name = totals.Name
AND Year BETWEEN 2000 AND 2001
GROUP BY Name;
Note that the subquery does not have the WHERE clause filtering the years.
Here's an example using @ars accepted answer and the BeautifulSoup4
, requests
, and wget
modules to handle the downloads.
import requests
import wget
import os
from bs4 import BeautifulSoup, SoupStrainer
url = 'https://archive.ics.uci.edu/ml/machine-learning-databases/eeg-mld/eeg_full/'
file_type = '.tar.gz'
response = requests.get(url)
for link in BeautifulSoup(response.content, 'html.parser', parse_only=SoupStrainer('a')):
if link.has_attr('href'):
if file_type in link['href']:
full_path = url + link['href']
wget.download(full_path)
I recently wrote a directive that supports native multiple file uploads. The solution I've created relies on a service to fill the gap you've identified with the $http service. I've also included a directive, which provides an easy API for your angular module to use to post the files and data.
Example usage:
<lvl-file-upload
auto-upload='false'
choose-file-button-text='Choose files'
upload-file-button-text='Upload files'
upload-url='http://localhost:3000/files'
max-files='10'
max-file-size-mb='5'
get-additional-data='getData(files)'
on-done='done(files, data)'
on-progress='progress(percentDone)'
on-error='error(files, type, msg)'/>
You can find the code on github, and the documentation on my blog
It would be up to you to process the files in your web framework, but the solution I've created provides the angular interface to getting the data to your server. The angular code you need to write is to respond to the upload events
angular
.module('app', ['lvl.directives.fileupload'])
.controller('ctl', ['$scope', function($scope) {
$scope.done = function(files,data} { /*do something when the upload completes*/ };
$scope.progress = function(percentDone) { /*do something when progress is reported*/ };
$scope.error = function(file, type, msg) { /*do something if an error occurs*/ };
$scope.getAdditionalData = function() { /* return additional data to be posted to the server*/ };
});
First change the xml, mark your second activity as DEFAULT
<activity android:name=".AddNewActivity" android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
Now you can initiate this activity using StartActivity method.
you can use cURL library for posting data: http://www.php.net/curl
$ch = curl_init();
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch, CURLOPT_URL, "http://websiteURL");
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, "XML=".$xmlcontent."&password=".$password."&etc=etc");
$content=curl_exec($ch);
where postfield contains XML you need to send - you will need to name the postfield the API service (Clickatell I guess) expects
Works for me:
public class BackupService
{
private readonly string _connectionString;
private readonly string _backupFolderFullPath;
private readonly string[] _systemDatabaseNames = { "master", "tempdb", "model", "msdb" };
public BackupService(string connectionString, string backupFolderFullPath)
{
_connectionString = connectionString;
_backupFolderFullPath = backupFolderFullPath;
}
public void BackupAllUserDatabases()
{
foreach (string databaseName in GetAllUserDatabases())
{
BackupDatabase(databaseName);
}
}
public void BackupDatabase(string databaseName)
{
string filePath = BuildBackupPathWithFilename(databaseName);
using (var connection = new SqlConnection(_connectionString))
{
var query = String.Format("BACKUP DATABASE [{0}] TO DISK='{1}'", databaseName, filePath);
using (var command = new SqlCommand(query, connection))
{
connection.Open();
command.ExecuteNonQuery();
}
}
}
private IEnumerable<string> GetAllUserDatabases()
{
var databases = new List<String>();
DataTable databasesTable;
using (var connection = new SqlConnection(_connectionString))
{
connection.Open();
databasesTable = connection.GetSchema("Databases");
connection.Close();
}
foreach (DataRow row in databasesTable.Rows)
{
string databaseName = row["database_name"].ToString();
if (_systemDatabaseNames.Contains(databaseName))
continue;
databases.Add(databaseName);
}
return databases;
}
private string BuildBackupPathWithFilename(string databaseName)
{
string filename = string.Format("{0}-{1}.bak", databaseName, DateTime.Now.ToString("yyyy-MM-dd"));
return Path.Combine(_backupFolderFullPath, filename);
}
}
You don't need to go level up and use ..
since all buttons are on the same level:
//button[contains(.,'Arcade Reader')]/preceding-sibling::button[@name='settings']
your customComparator class must implement java.util.Comparator in order to be used. it must also overide compare() AND equals()
compare() must answer the question: Is object 1 less than, equal to or greater than object 2?
full docs: http://java.sun.com/j2se/1.5.0/docs/api/java/util/Comparator.html
I understand much better the output of:
git diff <remote-tracking branch> <local branch>
that shows me what is going to be dropped and what is going to be added if I push the local branch. Of course it is the same, just the inverse, but for me is more readable and I'm more confortable looking at what is going to happen.
Fabrício's answer is spot on; but I wanted to complement his answer with something less technical, which focusses on an analogy to help explain the concept of asynchronicity.
Yesterday, the work I was doing required some information from a colleague. I rang him up; here's how the conversation went:
Me: Hi Bob, I need to know how we foo'd the bar'd last week. Jim wants a report on it, and you're the only one who knows the details about it.
Bob: Sure thing, but it'll take me around 30 minutes?
Me: That's great Bob. Give me a ring back when you've got the information!
At this point, I hung up the phone. Since I needed information from Bob to complete my report, I left the report and went for a coffee instead, then I caught up on some email. 40 minutes later (Bob is slow), Bob called back and gave me the information I needed. At this point, I resumed my work with my report, as I had all the information I needed.
Imagine if the conversation had gone like this instead;
Me: Hi Bob, I need to know how we foo'd the bar'd last week. Jim want's a report on it, and you're the only one who knows the details about it.
Bob: Sure thing, but it'll take me around 30 minutes?
Me: That's great Bob. I'll wait.
And I sat there and waited. And waited. And waited. For 40 minutes. Doing nothing but waiting. Eventually, Bob gave me the information, we hung up, and I completed my report. But I'd lost 40 minutes of productivity.
This is exactly what is happening in all the examples in our question. Loading an image, loading a file off disk, and requesting a page via AJAX are all slow operations (in the context of modern computing).
Rather than waiting for these slow operations to complete, JavaScript lets you register a callback function which will be executed when the slow operation has completed. In the meantime, however, JavaScript will continue to execute other code. The fact that JavaScript executes other code whilst waiting for the slow operation to complete makes the behaviorasynchronous. Had JavaScript waited around for the operation to complete before executing any other code, this would have been synchronous behavior.
var outerScopeVar;
var img = document.createElement('img');
// Here we register the callback function.
img.onload = function() {
// Code within this function will be executed once the image has loaded.
outerScopeVar = this.width;
};
// But, while the image is loading, JavaScript continues executing, and
// processes the following lines of JavaScript.
img.src = 'lolcat.png';
alert(outerScopeVar);
In the code above, we're asking JavaScript to load lolcat.png
, which is a sloooow operation. The callback function will be executed once this slow operation has done, but in the meantime, JavaScript will keep processing the next lines of code; i.e. alert(outerScopeVar)
.
This is why we see the alert showing undefined
; since the alert()
is processed immediately, rather than after the image has been loaded.
In order to fix our code, all we have to do is move the alert(outerScopeVar)
code into the callback function. As a consequence of this, we no longer need the outerScopeVar
variable declared as a global variable.
var img = document.createElement('img');
img.onload = function() {
var localScopeVar = this.width;
alert(localScopeVar);
};
img.src = 'lolcat.png';
You'll always see a callback is specified as a function, because that's the only* way in JavaScript to define some code, but not execute it until later.
Therefore, in all of our examples, the function() { /* Do something */ }
is the callback; to fix all the examples, all we have to do is move the code which needs the response of the operation into there!
* Technically you can use eval()
as well, but eval()
is evil for this purpose
You might currently have some code similar to this;
function getWidthOfImage(src) {
var outerScopeVar;
var img = document.createElement('img');
img.onload = function() {
outerScopeVar = this.width;
};
img.src = src;
return outerScopeVar;
}
var width = getWidthOfImage('lolcat.png');
alert(width);
However, we now know that the return outerScopeVar
happens immediately; before the onload
callback function has updated the variable. This leads to getWidthOfImage()
returning undefined
, and undefined
being alerted.
To fix this, we need to allow the function calling getWidthOfImage()
to register a callback, then move the alert'ing of the width to be within that callback;
function getWidthOfImage(src, cb) {
var img = document.createElement('img');
img.onload = function() {
cb(this.width);
};
img.src = src;
}
getWidthOfImage('lolcat.png', function (width) {
alert(width);
});
... as before, note that we've been able to remove the global variables (in this case width
).
It seems like your question has been answered but now you might wonder why char *a = "String" is stored in read-only memory. Well, it is actually left undefined by the c99 standard but most compilers choose to it this way for instances like:
printf("Hello, World\n");
c99 standard(pdf) [page 130, section 6.7.8]:
The declaration:
char s[] = "abc", t[3] = "abc";
defines "plain" char array objects s and t whose elements are initialized with character string literals. This declaration is identical to char
s[] = { 'a', 'b', 'c', '\0' }, t[] = { 'a', 'b', 'c' };
The contents of the arrays are modifiable. On the other hand, the declaration
char *p = "abc";
defines p with type "pointer to char" and initializes it to point to an object with type "array of char" with length 4 whose elements are initialized with a character string literal. If an attempt is made to use p to modify the contents of the array, the behavior is undefined.
Better to just use .addClass()
and .removeClass()
even if you have 1 or more styles to change. It's more maintainable and readable.
If you really have the urge to do multiple CSS properties, then use the following:
.css({
'font-size' : '10px',
'width' : '30px',
'height' : '10px'
});
NB!
Any CSS properties with a hyphen need to be quoted.
I've placed the quotes so no one will need to clarify that, and the code will be 100% functional.
Complete howto in the perfaq here: http://learn.perl.org/faq/perlfaq4.html#How-do-I-strip-blank-space-from-the-beginning-end-of-a-string-
I am trying to set a JPanel's background using an image, however, every example I find seems to suggest extending the panel with its own class
yes you will have to extend JPanel
and override the paintcomponent(Graphics g)
function to do so.
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
g.drawImage(bgImage, 0, 0, null);
}
I have been looking for a way to simply add the image without creating a whole new class and within the same method (trying to keep things organized and simple).
You can use other component which allows to add image as icon directly e.g. JLabel
if you want.
ImageIcon icon = new ImageIcon(imgURL);
JLabel thumb = new JLabel();
thumb.setIcon(icon);
But again in the bracket trying to keep things organized and simple !! what makes you to think that just creating a new class will lead you to a messy world ?
Require the JSON library, and use to_json
.
require 'json'
tempHash = {
"key_a" => "val_a",
"key_b" => "val_b"
}
File.open("public/temp.json","w") do |f|
f.write(tempHash.to_json)
end
Your temp.json file now looks like:
{"key_a":"val_a","key_b":"val_b"}
Try This.
View:
@using (Html.BeginForm("Login", "Accounts", FormMethod.Post))
{
<input type="text" name="IP" id="IP" />
<input type="text" name="Name" id="Name" />
<input type="submit" value="Login" />
}
Controller:
[HttpPost]
public ActionResult Login(string IP, string Name)
{
string s1=IP;//
string s2=Name;//
}
If you can use model class
[HttpPost]
public ActionResult Login(ModelClassName obj)
{
string s1=obj.IP;//
string s2=obj.Name;//
}
You will need to convert your response
to json
before you can access response.body
From the docs
fetch(url)
.then(response => response.json())
.then(json => {
console.log('parsed json', json) // access json.body here
})
Merging various references found here in StackOverflow (including the article above) and in other sites, I did so using javascript and JQuery:
<html>
<body>
<canvas id="myCanvas" width="400" height="400" style="border:1px solid #c3c3c3;">
Your browser does not support the canvas element.
</canvas>
<script src="jquery.js"></script>
<script type="text/javascript">
window.onload = function(){
var canvas = document.getElementById('myCanvas');
var context = canvas.getContext('2d');
var img = new Image();
img.src = 'photo_apple.jpg';
context.drawImage(img, 0, 0);
};
function findPos(obj){
var current_left = 0, current_top = 0;
if (obj.offsetParent){
do{
current_left += obj.offsetLeft;
current_top += obj.offsetTop;
}while(obj = obj.offsetParent);
return {x: current_left, y: current_top};
}
return undefined;
}
function rgbToHex(r, g, b){
if (r > 255 || g > 255 || b > 255)
throw "Invalid color component";
return ((r << 16) | (g << 8) | b).toString(16);
}
$('#myCanvas').click(function(e){
var position = findPos(this);
var x = e.pageX - position.x;
var y = e.pageY - position.y;
var coordinate = "x=" + x + ", y=" + y;
var canvas = this.getContext('2d');
var p = canvas.getImageData(x, y, 1, 1).data;
var hex = "#" + ("000000" + rgbToHex(p[0], p[1], p[2])).slice(-6);
alert("HEX: " + hex);
});
</script>
<img src="photo_apple.jpg"/>
</body>
</html>
This is my complete solution. Here I only used canvas and one image, but if you need to use <map>
over the image, it's possible too.
Select
MonthEndDate MED,
SUM(GrossBalance/1000000) GrossBalance,
PortfolioRename PR
into
testDynamic
from
Risk_PortfolioOverview
Group By MonthEndDate, PortfolioRename
Callable
needs to implement call()
method while a Runnable
needs to implement run()
method.Callable
can return a value but a Runnable
cannot.Callable
can throw checked exception but a Runnable
cannot.A Callable
can be used with ExecutorService#invokeXXX(Collection<? extends Callable<T>> tasks)
methods but a Runnable
cannot be.
public interface Runnable {
void run();
}
public interface Callable<V> {
V call() throws Exception;
}
You can use perl one-liners much like you do with sed, with the advantage of full perl regular expression support (which is much more powerful than what you get with sed). There is also very little variation across *nix platforms - perl is generally perl. So you can stop worrying about how to make your particular system's version of sed do what you want.
In this case, you can do
perl -pe 's/(regex)/\n$1/'
-pe
puts perl into a "execute and print" loop, much like sed's normal mode of operation.
'
quotes everything else so the shell won't interfere
()
surrounding the regex is a grouping operator. $1
on the right side of the substitution prints out whatever was matched inside these parens.
Finally, \n
is a newline.
Regardless of whether you are using parentheses as a grouping operator, you have to escape any parentheses you are trying to match. So a regex to match the pattern you list above would be something like
\(\d\d\d\)\d\d\d-\d\d\d\d
\(
or \)
matches a literal paren, and \d
matches a digit.
Better:
\(\d{3}\)\d{3}-\d{4}
I imagine you can figure out what the numbers in braces are doing.
Additionally, you can use delimiters other than / for your regex. So if you need to match / you won't need to escape it. Either of the below is equivalent to the regex at the beginning of my answer. In theory you can substitute any character for the standard /'s.
perl -pe 's#(regex)#\n$1#'
perl -pe 's{(regex)}{\n$1}'
A couple final thoughts.
using -ne
instead of -pe
acts similarly, but doesn't automatically print at the end. It can be handy if you want to print on your own. E.g., here's a grep-alike (m/foobar/
is a regex match):
perl -ne 'if (m/foobar/) {print}'
If you are finding dealing with newlines troublesome, and you want it to be magically handled for you, add -l
. Not useful for the OP, who was working with newlines, though.
Bonus tip - if you have the pcre package installed, it comes with pcregrep
, which uses full perl-compatible regexes.
If you are using phpmyadmin to add new routine then don't forget to wrap your code between BEGIN and END
#code to insert and read dictionary element from csv file
import csv
n=input("Enter I to insert or S to read : ")
if n=="I":
m=int(input("Enter the number of data you want to insert: "))
mydict={}
list=[]
for i in range(m):
keys=int(input("Enter id :"))
list.append(keys)
values=input("Enter Name :")
mydict[keys]=values
with open('File1.csv',"w") as csvfile:
writer = csv.DictWriter(csvfile, fieldnames=list)
writer.writeheader()
writer.writerow(mydict)
print("Data Inserted")
else:
keys=input("Enter Id to Search :")
Id=str(keys)
with open('File1.csv',"r") as csvfile:
reader = csv.DictReader(csvfile)
for row in reader:
print(row[Id]) #print(row) to display all data
EDIT:
Ok I found why the int.ToString() in LINQtoEF fails, please read this post: Problem with converting int to string in Linq to entities
This works on my side :
List<string> materialTypes = (from u in result.Users
select u.LastName)
.Union(from u in result.Users
select SqlFunctions.StringConvert((double) u.UserId)).ToList();
On yours it should be like this:
IList<String> materialTypes = ((from tom in context.MaterialTypes
where tom.IsActive == true
select tom.Name)
.Union(from tom in context.MaterialTypes
where tom.IsActive == true
select SqlFunctions.StringConvert((double)tom.ID))).ToList();
Thanks, i've learnt something today :)
You can access the USB drive by its drive letter. To know the drive letter you can run this command:
C:\>wmic logicaldisk where drivetype=2 get deviceid, volumename, description
From here you will get the drive letter (Device ID) of your USB drive.
For example if its F: then run the following command in command prompt to see its contents:
C:\> F:
F:\> dir
This will load a file in working directory:
static void Main(string[] args)
{
string fileName = System.IO.Path.GetFullPath(Directory.GetCurrentDirectory() + @"\Yourfile.txt");
Console.WriteLine("Your file content is:");
using (StreamReader sr = File.OpenText(fileName))
{
string s = "";
while ((s = sr.ReadLine()) != null)
{
Console.WriteLine(s);
}
}
Console.ReadKey();
}
If your using console you can also do this.It will prompt the user to write the path of the file(including filename with extension).
static void Main(string[] args)
{
Console.WriteLine("****please enter path to your file****");
Console.Write("Path: ");
string pth = Console.ReadLine();
Console.WriteLine();
Console.WriteLine("Your file content is:");
using (StreamReader sr = File.OpenText(pth))
{
string s = "";
while ((s = sr.ReadLine()) != null)
{
Console.WriteLine(s);
}
}
Console.ReadKey();
}
If you use winforms for example try this simple example:
private void button1_Click(object sender, EventArgs e)
{
string pth = "";
OpenFileDialog ofd = new OpenFileDialog();
if (ofd.ShowDialog() == DialogResult.OK)
{
pth = ofd.FileName;
textBox1.Text = File.ReadAllText(pth);
}
}
As of now the best way is to use android:fadeScrollbars="false"
in xml which is equivalent to ScrollView.setScrollbarFadingEnabled(false);
in java code.
Google has an example called EfficientAdapter, which in my opinion is the best simple example of how to implement custom adapters. http://developer.android.com/resources/samples/ApiDemos/src/com/example/android/apis/view/List14.html @CommonsWare has written a good explanation of the patterns used in the above example http://commonsware.com/Android/excerpt.pdf
@robert-hurst has a cleaner approach.
However, this solution may also be used, in places when you actually want to have a copy of Data Url after copying. For example, when you are building a website that uses lots of image/canvas operations.
// select canvas elements
var sourceCanvas = document.getElementById("some-unique-id");
var destCanvas = document.getElementsByClassName("some-class-selector")[0];
//copy canvas by DataUrl
var sourceImageData = sourceCanvas.toDataURL("image/png");
var destCanvasContext = destCanvas.getContext('2d');
var destinationImage = new Image;
destinationImage.onload = function(){
destCanvasContext.drawImage(destinationImage,0,0);
};
destinationImage.src = sourceImageData;
const button = document.querySelector('button')_x000D_
const box = document.querySelector('.box');_x000D_
_x000D_
const toggle = event => {_x000D_
event.stopPropagation();_x000D_
_x000D_
if (!event.target.closest('.box')) {_x000D_
console.log('Click outside');_x000D_
_x000D_
box.classList.toggle('active');_x000D_
_x000D_
box.classList.contains('active')_x000D_
? document.addEventListener('click', toggle)_x000D_
: document.removeEventListener('click', toggle);_x000D_
} else {_x000D_
console.log('Click inside');_x000D_
}_x000D_
}_x000D_
_x000D_
button.addEventListener('click', toggle);
_x000D_
.box {_x000D_
position: absolute;_x000D_
display: none;_x000D_
margin-top: 8px;_x000D_
padding: 20px;_x000D_
background: lightgray;_x000D_
}_x000D_
_x000D_
.box.active {_x000D_
display: block;_x000D_
}
_x000D_
<button>Toggle box</button>_x000D_
_x000D_
<div class="box">_x000D_
<form action="">_x000D_
<input type="text">_x000D_
<button type="button">Search</button>_x000D_
</form>_x000D_
</div>
_x000D_
I ran into this problem after I cloned a git repository to a directory, renamed the directory, then tried to run npm install
. I'm not sure what the problem was, but something was bungled. Deleting everything, re-cloning (this time with the correct directory name), and then running npm install
resolved my issue.
Try sudo pip install numpy --upgrade --ignore-installed
.
It work in Mac OS 10.11.
You should close The 'Rootless' if above shell isn't work.
Presume you linking to a shared drive for example the S drive? If so, other people may have mapped the drive differently. You probably need to use the "official" drive name //euhkj002/forecasts/bla bla. Instead of S// in your link
use uniform js plugin
to style input of any type, select, textarea.
The URL is http://uniformjs.com/
You should use the StringBuilder class.
StringBuilder stringBuilder = new StringBuilder();
stringBuilder.append("Some text");
stringBuilder.append("Some text");
stringBuilder.append("Some text");
String finalString = stringBuilder.toString();
In addition, please visit:
I find it useful to turn an UPDATE into a SELECT to get the rows I want to update as a test before updating. If I can select the exact rows I want, I can update just those rows I want to update.
DECLARE @expense_report_id AS INT
SET @expense_report_id = 1027
--UPDATE expense_report_detail_distribution
--SET service_bill_id = 9
SELECT *
FROM expense_report_detail_distribution erdd
INNER JOIN expense_report_detail erd
INNER JOIN expense_report er
ON er.expense_report_id = erd.expense_report_id
ON erdd.expense_report_detail_id = erd.expense_report_detail_id
WHERE er.expense_report_id = @expense_report_id
The goal is to make the <body> element take up the available height of the screen.
If you don't expect your content to take up more than the height of the screen, or you plan to make an inner scrollable element, set
body {
height: 100vh;
}
otherwise, you want <body> to become scrollable when there is more content than the screen can hold, so set
body {
min-height: 100vh;
}
this alone achieves the goal, albeit with a possible, and probably desirable, refinement.
Removing the margin of <body>.
body {
margin: 0;
}
there are two main reasons for doing so.
P.S. if you want the background to be a radial gradient with its center in the center of the screen and not in the bottom right corner as with your example, consider using something like
body {
min-height: 100vh;
margin: 0;
background: radial-gradient(circle, rgba(255,255,255,1) 0%, rgba(0,0,0,1) 100%);
}
_x000D_
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=">
<title>test</title>
</head>
<body>
</body>
</html>
_x000D_
$("button").click(function(){_x000D_
alert($("li").length);_x000D_
});
_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.2.3/jquery.min.js"></script>_x000D_
<!DOCTYPE html>_x000D_
<html>_x000D_
<head>_x000D_
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>_x000D_
<meta charset="utf-8">_x000D_
<title>Count the number of specific elements</title>_x000D_
</head>_x000D_
<body>_x000D_
<ul>_x000D_
<li>List - 1</li>_x000D_
<li>List - 2</li>_x000D_
<li>List - 3</li>_x000D_
</ul>_x000D_
<button>Display the number of li elements</button>_x000D_
</body>_x000D_
</html>
_x000D_
A connection timeout occurs only upon starting the TCP connection. This usually happens if the remote machine does not answer. This means that the server has been shut down, you used the wrong IP/DNS name, wrong port or the network connection to the server is down.
A socket timeout is dedicated to monitor the continuous incoming data flow. If the data flow is interrupted for the specified timeout the connection is regarded as stalled/broken. Of course this only works with connections where data is received all the time.
By setting socket timeout to 1 this would require that every millisecond new data is received (assuming that you read the data block wise and the block is large enough)!
If only the incoming stream stalls for more than a millisecond you are running into a timeout.
I suggest sticking to standard HTML attributes like name
on input
Elements to identify your inputs. Also, you don't need to keep "total" as a separate value in state because it is composable by adding other values in your state:
var Hello = React.createClass({
getInitialState: function() {
return {input1: 0, input2: 0};
},
render: function() {
const total = this.state.input1 + this.state.input2;
return (
<div>{total}<br/>
<input type="text" value={this.state.input1} name="input1" onChange={this.handleChange} />
<input type="text" value={this.state.input2} name="input2" onChange={this.handleChange} />
</div>
);
},
handleChange: function(e) {
this.setState({[e.target.name]: e.target.value});
}
});
React.renderComponent(<Hello />, document.getElementById('content'));
$currentDateTime = $row['date'];
echo $newDateTime = date('l jS \of F Y h:i:s A', strtotime($currentDateTime));
Based on the syntax, I'm guessing this is Python. The point of a tuple is that it is immutable, so you need to replace each element with a new tuple:
list = [l + (''.join(l),) for l in list]
# output:
[('1', '2', '3', '4', '1234'),
('2', '3', '4', '5', '2345'),
('3', '4', '5', '6', '3456'),
('4', '5', '6', '7', '4567')]
I faced similar and tried some of the techniques mentioned here. To overcome,
I performed a cleanup of duplicate entries in c:\users\<user name>\.npmrc
Hope it helps someone. Thanks,
Run
gradlew -q app:dependencies
It will remove what is wrong.
You need to do the combination of Kristo's answer and MSN's:
// Note: Using the pre-increment operator is preferred for iterators because
// there can be a performance gain.
//
// Note: As long as you are iterating from beginning to end, without inserting
// along the way you can safely save end once; otherwise get it at the
// top of each loop.
std::list< item * >::iterator iter = items.begin();
std::list< item * >::iterator end = items.end();
while (iter != end)
{
item * pItem = *iter;
if (pItem->update() == true)
{
other_code_involving(pItem);
++iter;
}
else
{
// BTW, who is deleting pItem, a.k.a. (*iter)?
iter = items.erase(iter);
}
}
Of course, the most efficient and SuperCool® STL savy thing would be something like this:
// This implementation of update executes other_code_involving(Item *) if
// this instance needs updating.
//
// This method returns true if this still needs future updates.
//
bool Item::update(void)
{
if (m_needsUpdates == true)
{
m_needsUpdates = other_code_involving(this);
}
return (m_needsUpdates);
}
// This call does everything the previous loop did!!! (Including the fact
// that it isn't deleting the items that are erased!)
items.remove_if(std::not1(std::mem_fun(&Item::update)));
The GMaps Utility Library has a plugin called MapIconMaker that makes it easy to generate different marker styles on the fly. It uses Google Charts to draw the markers.
There's a good demo here that shows what kind of markers you can make with it.
Personally, I prefer "one" liners. Something along the lines:
my.df <- data.frame(col1 = sample(c(1,2), 10, replace = TRUE),
col2 = as.factor(sample(10)), col3 = letters[1:10],
col4 = sample(c(TRUE, FALSE), 10, replace = TRUE))
my.list <- list(list1 = my.df, list2 = my.df[3], list3 = letters)
The data structure should mimic the idea of the writer's problem and not the exact verbatim structure. I really appreciate it when variables don't overwrite my own variables or god forbid, functions (like df
).
Alternatively, one could cut a few corners and point to a pre-existing data set, something like:
library(vegan)
data(varespec)
ord <- metaMDS(varespec)
Don't forget to mention any special packages you might be using.
If you're trying to demonstrate something on larger objects, you can try
my.df2 <- data.frame(a = sample(10e6), b = sample(letters, 10e6, replace = TRUE))
If you're working with spatial data via the raster
package, you can generate some random data. A lot of examples can be found in the package vignette, but here's a small nugget.
library(raster)
r1 <- r2 <- r3 <- raster(nrow=10, ncol=10)
values(r1) <- runif(ncell(r1))
values(r2) <- runif(ncell(r2))
values(r3) <- runif(ncell(r3))
s <- stack(r1, r2, r3)
If you need some spatial object as implemented in sp
, you can get some datasets via external files (like ESRI shapefile) in "spatial" packages (see the Spatial view in Task Views).
library(rgdal)
ogrDrivers()
dsn <- system.file("vectors", package = "rgdal")[1]
ogrListLayers(dsn)
ogrInfo(dsn=dsn, layer="cities")
cities <- readOGR(dsn=dsn, layer="cities")
Try this:
SELECT
table_rows "Rows Count"
FROM
information_schema.tables
WHERE
table_name="Table_Name"
AND
table_schema="Database_Name";
Just drop the option v
.
-v
is for verbose. If you don't use it then it won't display:
tar -zxf tmp.tar.gz -C ~/tmp1
select @@version
Sample Output
Microsoft SQL Server 2008 (SP1) - 10.0.2531.0 (X64) Mar 29 2009 10:11:52 Copyright (c) 1988-2008 Microsoft Corporation Developer Edition (64-bit) on Windows NT 6.1 (Build 7600: )
If you just want to get the edition, you can use:
select serverproperty('Edition')
To use in an automated script, you can get the edition ID, which is an integer:
select serverproperty('EditionID')
There are two common approaches for this:
Specify http-proxy-
options in your /etc/.subversion/servers or %APPDATA%\Subversion\servers file,
Use --config-option
command-line option to specify the same http-proxy-
options in single command-line you run. For example,
svn checkout ^
--config-option servers:global:http-proxy-host=<PROXY-HOST> ^
--config-option servers:global:http-proxy-port=<PORT> <REPO-URL> <LWC-DIR>
If you are on Windows, you can also write http-proxy-
options to Windows Registry. It's pretty handy if you need to apply proxy settings in Active Directory environment via Group Policy Objects.
It's the domain name spelt out in reverse.
For example, one of my domains is hedgee.com. So, I use com.hedgee
as the base name of all my packages.
$("meta")
Should give you back an array of elements whose tag name is META and then you can iterate over the collection to pick out whatever attributes of the elements you are interested in.
Here is code to iterate through all rules in a page:
function iterateCSS(f) {_x000D_
for (const styleSheet of window.document.styleSheets) {_x000D_
const classes = styleSheet.rules || styleSheet.cssRules;_x000D_
if (!classes) continue;_x000D_
_x000D_
for (const cssRule of classes) {_x000D_
if (cssRule.type !== 1 || !cssRule.style) continue;_x000D_
const selector = cssRule.selectorText, style=cssRule.style;_x000D_
if (!selector || !style.cssText) continue;_x000D_
for (let i=0; i<style.length; i++) {_x000D_
const propertyName=style.item(i);_x000D_
if (f(selector, propertyName, style.getPropertyValue(propertyName), style.getPropertyPriority(propertyName), cssRule)===false) return;_x000D_
}_x000D_
}_x000D_
}_x000D_
}_x000D_
_x000D_
iterateCSS( (selector, propertyName, propertyValue, propertyPriority, cssRule) => {_x000D_
console.log(selector+' { '+propertyName+': '+propertyValue+(propertyPriority==='important' ? ' !important' : '')+' }');_x000D_
});
_x000D_
Using ranking method.
SELECT @rn := CASE WHEN @prev_grp <> groupa THEN 1 ELSE @rn+1 END AS rn,
@prev_grp :=groupa,
person,age,groupa
FROM users,(SELECT @rn := 0) r
HAVING rn=1
ORDER BY groupa,age DESC,person
This sql can be explained as below,
select * from users, (select @rn := 0) r order by groupa, age desc, person
@prev_grp is null
@rn := CASE WHEN @prev_grp <> groupa THEN 1 ELSE @rn+1 END
this is a three operator expression
like this, rn = 1 if prev_grp != groupa else rn=rn+1
having rn=1 filter out the row you need
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.
$ find . -type f -not -path '*/\.*' -printf '%TY.%Tm.%Td %THh%TM %Ta %p\n' |sort -nr |head -n 10
Handles spaces in filenames well — not that these should be used!
2017.01.25 18h23 Wed ./indenting/Shifting blocks visually.mht
2016.12.11 12h33 Sun ./tabs/Converting tabs to spaces.mht
2016.12.02 01h46 Fri ./advocacy/2016.Vim or Emacs - Which text editor do you prefer?.mht
2016.11.09 17h05 Wed ./Word count - Vim Tips Wiki.mht
More find
galore following the link.
Complementing @Bob Jarvis and @dmikam answer, Postgres don't perform a good plan when you don't use LATERAL, below a simulation, in both cases the query data results are the same, but the cost are very different
Table structure
CREATE TABLE ITEMS (
N INTEGER NOT NULL,
S TEXT NOT NULL
);
INSERT INTO ITEMS
SELECT
(random()*1000000)::integer AS n,
md5(random()::text) AS s
FROM
generate_series(1,1000000);
CREATE INDEX N_INDEX ON ITEMS(N);
Performing JOIN
with GROUP BY
in subquery without LATERAL
EXPLAIN
SELECT
I.*
FROM ITEMS I
INNER JOIN (
SELECT
COUNT(1), n
FROM ITEMS
GROUP BY N
) I2 ON I2.N = I.N
WHERE I.N IN (243477, 997947);
The results
Merge Join (cost=0.87..637500.40 rows=23 width=37)
Merge Cond: (i.n = items.n)
-> Index Scan using n_index on items i (cost=0.43..101.28 rows=23 width=37)
Index Cond: (n = ANY ('{243477,997947}'::integer[]))
-> GroupAggregate (cost=0.43..626631.11 rows=861418 width=12)
Group Key: items.n
-> Index Only Scan using n_index on items (cost=0.43..593016.93 rows=10000000 width=4)
Using LATERAL
EXPLAIN
SELECT
I.*
FROM ITEMS I
INNER JOIN LATERAL (
SELECT
COUNT(1), n
FROM ITEMS
WHERE N = I.N
GROUP BY N
) I2 ON 1=1 --I2.N = I.N
WHERE I.N IN (243477, 997947);
Results
Nested Loop (cost=9.49..1319.97 rows=276 width=37)
-> Bitmap Heap Scan on items i (cost=9.06..100.20 rows=23 width=37)
Recheck Cond: (n = ANY ('{243477,997947}'::integer[]))
-> Bitmap Index Scan on n_index (cost=0.00..9.05 rows=23 width=0)
Index Cond: (n = ANY ('{243477,997947}'::integer[]))
-> GroupAggregate (cost=0.43..52.79 rows=12 width=12)
Group Key: items.n
-> Index Only Scan using n_index on items (cost=0.43..52.64 rows=12 width=4)
Index Cond: (n = i.n)
My Postgres version is PostgreSQL 10.3 (Debian 10.3-1.pgdg90+1)
It's not possible to define member functions or derive structs from each other in C.
Also, C++ is not only C + "derive structs". Templates, references, user defined namespaces and operator overloading all do not exist in C.
One in tcl:
#!/usr/bin/env tclsh
set sum 0
while {[gets stdin num] >= 0} { incr sum $num }
puts $sum
Try this in web.config to replace IIS error pages. This is the best solution I guess, and it sends out the correct status code too.
<system.webServer>
<httpErrors errorMode="Custom" existingResponse="Replace">
<remove statusCode="404" subStatusCode="-1" />
<remove statusCode="500" subStatusCode="-1" />
<error statusCode="404" path="Error404.html" responseMode="File" />
<error statusCode="500" path="Error.html" responseMode="File" />
</httpErrors>
</system.webServer>
More info from Tipila - Use Custom Error Pages ASP.NET MVC
One more way/syntax to do it is: git log -S "word"
Like this you can search for example git log -S "with whitespaces and stuff @/#ü !"
Change position
position:fixed;
overflow: hidden;
to
position:absolute;
overflow:scroll;
[TestMethod]
public void EnsureKWLLibrariesAreAll64Bit()
{
var assemblies = Assembly.GetExecutingAssembly().GetReferencedAssemblies().Where(x => x.FullName.StartsWith("YourCommonProjectName")).ToArray();
foreach (var assembly in assemblies)
{
var myAssemblyName = AssemblyName.GetAssemblyName(assembly.FullName.Split(',')[0] + ".dll");
Assert.AreEqual(ProcessorArchitecture.MSIL, myAssemblyName.ProcessorArchitecture);
}
}
It is possible to center a video inside an element just like a cover
sized background-image
without JS using the object-fit
attribute or CSS Transforms
.
As pointed in the comments, it is possible to achieve the same result without CSS transform
, but using object-fit
, which I think it's an even better option for the same result:
.video-container {
height: 300px;
width: 300px;
position: relative;
}
.video-container video {
width: 100%;
height: 100%;
position: absolute;
object-fit: cover;
z-index: 0;
}
/* Just styling the content of the div, the *magic* in the previous rules */
.video-container .caption {
z-index: 1;
position: relative;
text-align: center;
color: #dc0000;
padding: 10px;
}
_x000D_
<div class="video-container">
<video autoplay muted loop>
<source src="https://commondatastorage.googleapis.com/gtv-videos-bucket/sample/BigBuckBunny.mp4" type="video/mp4" />
</video>
<div class="caption">
<h2>Your caption here</h2>
</div>
</div>
_x000D_
You can set a video as a background to any HTML element easily thanks to transform
CSS property.
Note that you can use the transform
technique to center vertically and horizontally any HTML element.
.video-container {
height: 300px;
width: 300px;
overflow: hidden;
position: relative;
}
.video-container video {
min-width: 100%;
min-height: 100%;
position: absolute;
top: 50%;
left: 50%;
transform: translateX(-50%) translateY(-50%);
}
/* Just styling the content of the div, the *magic* in the previous rules */
.video-container .caption {
z-index: 1;
position: relative;
text-align: center;
color: #dc0000;
padding: 10px;
}
_x000D_
<div class="video-container">
<video autoplay muted loop>
<source src="https://commondatastorage.googleapis.com/gtv-videos-bucket/sample/BigBuckBunny.mp4" type="video/mp4" />
</video>
<div class="caption">
<h2>Your caption here</h2>
</div>
</div>
_x000D_
This error means that the value indexed by the key "l_messages" is not of type hash
, but rather something else. You've probably set it to that other value earlier in your code. Try various other value-getter commands, starting with GET, to see which one works and you'll know what type is actually here.
Here are some of your options:
char a1[][14] = { "blah", "hmm" };
char* a2[] = { "blah", "hmm" };
char (*a3[])[] = { &"blah", &"hmm" }; // only since you brought up the syntax -
printf(a1[0]); // prints blah
printf(a2[0]); // prints blah
printf(*a3[0]); // prints blah
The advantage of a2
is that you can then do the following with string literals
a2[0] = "hmm";
a2[1] = "blah";
And for a3
you may do the following:
a3[0] = &"hmm";
a3[1] = &"blah";
For a1
you will have to use strcpy()
(better yet strncpy()
) even when assigning string literals. The reason is that a2
, and a3
are arrays of pointers and you can make their elements (i.e. pointers) point to any storage, whereas a1
is an array of 'array of chars' and so each element is an array that "owns" its own storage (which means it gets destroyed when it goes out of scope) - you can only copy stuff into its storage.
This also brings us to the disadvantage of using a2
and a3
- since they point to static storage (where string literals are stored) the contents of which cannot be reliably changed (viz. undefined behavior), if you want to assign non-string literals to the elements of a2
or a3
- you will first have to dynamically allocate enough memory and then have their elements point to this memory, and then copy the characters into it - and then you have to be sure to deallocate the memory when done.
Bah - I miss C++ already ;)
p.s. Let me know if you need examples.
UPDATE user_account student, (
SELECT teacher.education_facility_id as teacherid
FROM user_account teacher
WHERE teacher.user_account_id = student.teacher_id AND teacher.user_type = 'ROLE_TEACHER'
) teach SET student.student_education_facility_id= teach.teacherid WHERE student.user_type = 'ROLE_STUDENT';
You can resize images using CSS just fine if you're modifying an image tag:
<img src="example.png" style="width:2em; height:3em;" />
You cannot scale a background-image property using CSS2, although you can try the CSS3 property background-size
.
What you can do, on the other hand, is to nest an image inside a span. See the answer to this question: Stretch and scale CSS background
I made a small recursive function that goes through the entire json object and saves the key path and its value.
// My stored keys and values from the json object
HashMap<String,String> myKeyValues = new HashMap<String,String>();
// Used for constructing the path to the key in the json object
Stack<String> key_path = new Stack<String>();
// Recursive function that goes through a json object and stores
// its key and values in the hashmap
private void loadJson(JSONObject json){
Iterator<?> json_keys = json.keys();
while( json_keys.hasNext() ){
String json_key = (String)json_keys.next();
try{
key_path.push(json_key);
loadJson(json.getJSONObject(json_key));
}catch (JSONException e){
// Build the path to the key
String key = "";
for(String sub_key: key_path){
key += sub_key+".";
}
key = key.substring(0,key.length()-1);
System.out.println(key+": "+json.getString(json_key));
key_path.pop();
myKeyValues.put(key, json.getString(json_key));
}
}
if(key_path.size() > 0){
key_path.pop();
}
}
I believe fcntl()
is a POSIX function. Where as ioctl()
is a standard UNIX thing. Here is a list of POSIX io. ioctl()
is a very kernel/driver/OS specific thing, but i am sure what you use works on most flavors of Unix. some other ioctl()
stuff might only work on certain OS or even certain revs of it's kernel.
While Asif Bilal's answer is a simpler solution that doesn't involve Size Classes (which were introduced in iOS 8.) it is strongly recommended you to get used to size classes as they are the future, and you will eventually jump in anyway at some point."
You probably haven't added the layout constraints.
Select your label, tap the layout constraints button on the bottom:
On that menu add width and height (it should NOT be the same as mine) by checking their checkbox and click add constraints. Then Control-drag your label to your main view, and then when you de-click, you should have the options to center horizontally and vertically in container. Add both, and you should be set up.
JS time value for MySQL
var datetime = new Date().toLocaleString();
OR
const DATE_FORMATER = require( 'dateformat' );
var datetime = DATE_FORMATER( new Date(), "yyyy-mm-dd HH:MM:ss" );
OR
const MOMENT= require( 'moment' );
let datetime = MOMENT().format( 'YYYY-MM-DD HH:mm:ss.000' );
you can send this in params its will work.
Using a div
instide a td
is not worse than any other way of using tables for layout. (Some people never use tables for layout though, and I happen to be one of them.)
If you use a div
in a td
you will however get in a situation where it might be hard to predict how the elements will be sized. The default for a div is to determine its width from its parent, and the default for a table cell is to determine its size depending on the size of its content.
The rules for how a div
should be sized is well defined in the standards, but the rules for how a td
should be sized is not as well defined, so different browsers use slightly different algorithms.
Use the keySet()
method to return a set with all the keys of a Map
.
If you want to keep your Map ordered you can use a TreeMap
.
You can use the instanceof
operator for this. From MDN:
The instanceof operator tests whether the prototype property of a constructor appears anywhere in the prototype chain of an object.
If you don't know what prototypes and prototype chains are I highly recommend looking it up. Also here is a JS (TS works similar in this respect) example which might clarify the concept:
class Animal {_x000D_
name;_x000D_
_x000D_
constructor(name) {_x000D_
this.name = name;_x000D_
}_x000D_
}_x000D_
_x000D_
const animal = new Animal('fluffy');_x000D_
_x000D_
// true because Animal in on the prototype chain of animal_x000D_
console.log(animal instanceof Animal); // true_x000D_
// Proof that Animal is on the prototype chain_x000D_
console.log(Object.getPrototypeOf(animal) === Animal.prototype); // true_x000D_
_x000D_
// true because Object in on the prototype chain of animal_x000D_
console.log(animal instanceof Object); _x000D_
// Proof that Object is on the prototype chain_x000D_
console.log(Object.getPrototypeOf(Animal.prototype) === Object.prototype); // true_x000D_
_x000D_
console.log(animal instanceof Function); // false, Function not on prototype chain_x000D_
_x000D_
_x000D_
The prototype chain in this example is:
animal > Animal.prototype > Object.prototype
What about a little trickery like NgModel does with NgForm? You have to register your parent as a provider, then load your parent in the constructor of the child.
That way, you don't have to put [sharedList]
on all your children.
// Parent.ts
export var parentProvider = {
provide: Parent,
useExisting: forwardRef(function () { return Parent; })
};
@Component({
moduleId: module.id,
selector: 'parent',
template: '<div><ng-content></ng-content></div>',
providers: [parentProvider]
})
export class Parent {
@Input()
public sharedList = [];
}
// Child.ts
@Component({
moduleId: module.id,
selector: 'child',
template: '<div>child</div>'
})
export class Child {
constructor(private parent: Parent) {
parent.sharedList.push('Me.');
}
}
Then your HTML
<parent [sharedList]="myArray">
<child></child>
<child></child>
</parent>
You can find more information on the subject in the Angular documentation: https://angular.io/guide/dependency-injection-in-action#find-a-parent-component-by-injection
Use:
import matplotlib.pyplot as plt
plt.gcf().subplots_adjust(bottom=0.15)
to make room for the label.
Edit:
Since i gave the answer, matplotlib
has added the tight_layout()
function.
So i suggest to use it:
plt.tight_layout()
should make room for the xlabel.
You are using the wrong format tokens when parsing your input. You should use ddd
for an abbreviation of the name of day of the week, DD
for day of the month, MMM
for an abbreviation of the month's name, YYYY
for the year, hh
for the 1-12
hour, mm
for minutes and A
for AM/PM
. See moment(String, String)
docs.
Here is a working live sample:
console.log( moment('Mon 03-Jul-2017, 11:00 AM', 'ddd DD-MMM-YYYY, hh:mm A').format('hh:mm A') );_x000D_
console.log( moment('Mon 03-Jul-2017, 11:00 PM', 'ddd DD-MMM-YYYY, hh:mm A').format('hh:mm A') );
_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.18.1/moment.min.js"></script>
_x000D_
Would this be an efficient approach? Converting to a string and finding the length property?
int num = 123
string strNum = to_string(num); // 123 becomes "123"
int length = strNum.length(); // length = 3
char array[3]; // or whatever you want to do with the length
The reason of such behaviour is that the string that is printed is the exact value - probably not what you expected, but that's the real value stored in memory - it's just a limitation of floating point representation.
According to javadoc, BigDecimal(double val) constructor behaviour can be unexpected if you don't take into consideration this limitation:
The results of this constructor can be somewhat unpredictable. One might assume that writing new BigDecimal(0.1) in Java creates a BigDecimal which is exactly equal to 0.1 (an unscaled value of 1, with a scale of 1), but it is actually equal to 0.1000000000000000055511151231257827021181583404541015625. This is because 0.1 cannot be represented exactly as a double (or, for that matter, as a binary fraction of any finite length). Thus, the value that is being passed in to the constructor is not exactly equal to 0.1, appearances notwithstanding.
So in your case, instead of using
double val = 77.48;
new BigDecimal(val);
use
BigDecimal.valueOf(val);
Value that is returned by BigDecimal.valueOf is equal to that resulting from invocation of Double.toString(double)
.
It depends upon the .NET Framework
that you use. Check Jon Skeet's answer about Versions.
Here is short version of his answer.
C# 1.0 released with .NET 1.0
C# 1.2 (bizarrely enough); released with .NET 1.1
C# 2.0 released with .NET 2.0
C# 3.0 released with .NET 3.5
C# 4.0 released with .NET 4
C# 5.0 released with .NET 4.5
C# 6.0 released with .NET 4.6
C# 7.0 is released with .NET 4.6.2
C# 7.3 is released with .NET 4.7.2
C# 8.0 is released with NET Core 3.0
C# 9.0 is released with NET 5.0
public class Person{
String s;
Date d;
...
public Person clone(){
Person p = new Person();
p.s = this.s.clone();
p.d = this.d.clone();
...
return p;
}
}
In your executing code:
ArrayList<Person> clone = new ArrayList<Person>();
for(Person p : originalList)
clone.add(p.clone());
It seems you may be more comfortable with developing in PHP you let this hold you back from utilizing the full potential with web applications.
It is indeed possible to have PHP render partials and whole views, but I would not recommend it.
To fully utilize the possibilities of HTML and javascript to make a web application, that is, a web page that acts more like an application and relies heavily on client side rendering, you should consider letting the client maintain all responsibility of managing state and presentation. This will be easier to maintain, and will be more user friendly.
I would recommend you to get more comfortable thinking in a more API centric approach. Rather than having PHP output a pre-rendered view, and use angular for mere DOM manipulation, you should consider having the PHP backend output the data that should be acted upon RESTFully, and have Angular present it.
Using PHP to render the view:
/user/account
if($loggedIn)
{
echo "<p>Logged in as ".$user."</p>";
}
else
{
echo "Please log in.";
}
How the same problem can be solved with an API centric approach by outputting JSON like this:
api/auth/
{
authorized:true,
user: {
username: 'Joe',
securityToken: 'secret'
}
}
and in Angular you could do a get, and handle the response client side.
$http.post("http://example.com/api/auth", {})
.success(function(data) {
$scope.isLoggedIn = data.authorized;
});
To blend both client side and server side the way you proposed may be fit for smaller projects where maintainance is not important and you are the single author, but I lean more towards the API centric way as this will be more correct separation of conserns and will be easier to maintain.
This worked for me.
using System.IO;
//
string readStr = File.ReadAllText(file.FullName);
string[] read = readStr.Split(new char[] {'\r','\n'},StringSplitOptions.RemoveEmptyEntries);
The bracket stuff (e.g., [[ $a -gt $b ]]
or (( $a > $b ))
) isn't enough if you want to use float numbers as well; it would report a syntax error. If you want to compare float numbers or float number to integer, you can use (( $(bc <<< "...") ))
.
For example,
a=2.00
b=1
if (( $(bc <<<"$a > $b") )); then
echo "a is greater than b"
else
echo "a is not greater than b"
fi
You can include more than one comparison in the if statement. For example,
a=2.
b=1
c=1.0000
if (( $(bc <<<"$b == $c && $b < $a") )); then
echo "b is equal to c but less than a"
else
echo "b is either not equal to c and/or not less than a"
fi
That's helpful if you want to check if a numeric variable (integer or not) is within a numeric range.
One important distinction between the two (which is visible in the Reflected code) is that SelectedValue will return an empty string if a nothing is selected, whereas SelectedItem.Value will throw a NullReference exception.
Another simpler option is to do:
> x = c(1, 1, 2, 4, 5, 2, 1, 3, 2)
> x[x==1] <- 0
> x
[1] 0 0 2 4 5 2 0 3 2
You have to use HorizontalContentAlignment="Center" and! Width="Auto".
It took me a while to find out what is going on, but here is the summary. I hope this save people a lot of time.
Apple are not playing nice with Wi-Fi Direct, not in the same way that Android is. The Multipeer Connectivity Framework that Apple provides combines both BLE and WiFi Direct together and will only work with Apple devices and not any device that is using Wi-Fi Direct.
It states the following in this documentation - "The Multipeer Connectivity framework provides support for discovering services provided by nearby iOS devices using infrastructure Wi-Fi networks, peer-to-peer Wi-Fi, and Bluetooth personal area networks and subsequently communicating with those services by sending message-based data, streaming data, and resources (such as files)."
Additionally, Wi-Fi direct in this mode between i-Devices will need iPhone 5 and above.
There are apps that use a form of Wi-Fi Direct on the App Store, but these are using their own libraries.
You could use display: table-row-group
for your div.
<table>
<div style="display: table-row-group">
<tr><td></td></tr>
</div>
<div style="display: table-row-group">
<tr><td></td></tr>
</div>
</table>
One way to do this without JS is to use the hover action to reveal a HTML element that is otherwise hidden, see this codepen:
http://codepen.io/c0un7z3r0/pen/LZWXEw
Note that the span that contains the tooltip content is relative to the parent li. The magic is here:
ul#list_of_thrones li > span{
display:none;
}
ul#list_of_thrones li:hover > span{
position: absolute;
display:block;
...
}
As you can see, the span is hidden unless the listitem is hovered over, thus revealing the span element, the span can contain as much html as you need. In the codepen attached I have also used a :after element for the arrow but that of course is entirely optional and has only been included in this example for cosmetic purposes.
I hope this helps, I felt compelled to post as all the other answers included JS solutions but the OP asked for a HTML/CSS only solution.
If display: inline;
isn't working, try out display: inline-block;
. :)
For from right to left slide
res/anim/in.xml:
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:shareInterpolator="false">
<translate
android:fromXDelta="100%" android:toXDelta="0%"
android:fromYDelta="0%" android:toYDelta="0%"
android:duration="700" />
</set>
res/anim/out.xml:
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:shareInterpolator="false">
<translate
android:fromXDelta="0%" android:toXDelta="-100%"
android:fromYDelta="0%" android:toYDelta="0%"
android:duration="700" />
</set>
in Activity Java file:
Intent intent = new Intent(HomeActivity.this, ActivityCapture.class);
startActivity(intent);
overridePendingTransition(R.anim.in,R.anim.out);
you can change the duration times in the xml files for the longer or shorter slide animation.
one more :-)
$ ls -ltr total 10 -rw-r--r-- 1 scripter linuxdumb 47 Dec 23 14:46 test1 -rw-r--r-- 1 scripter linuxdumb 0 Jan 4 23:40 test4 -rw-r--r-- 1 scripter linuxdumb 0 Jan 4 23:40 test3 -rw-r--r-- 1 scripter linuxdumb 0 Jan 4 23:40 test2 -rw-r--r-- 1 scripter linuxdumb 0 Jan 4 23:41 file5 -rw-r--r-- 1 scripter linuxdumb 0 Jan 4 23:41 file4 -rw-r--r-- 1 scripter linuxdumb 0 Jan 4 23:41 file3 -rw-r--r-- 1 scripter linuxdumb 0 Jan 4 23:41 file2 -rw-r--r-- 1 scripter linuxdumb 0 Jan 4 23:41 file1 $ find . -type f ! -name "*1" ! -name "*2" -print ./test3 ./test4 ./file3 ./file4 ./file5 $
2019 modern browsers update
This is the approach I'd now recommend with a few caveats:
fetch('https://jsonplaceholder.typicode.com/todos/1')_x000D_
.then(resp => resp.blob())_x000D_
.then(blob => {_x000D_
const url = window.URL.createObjectURL(blob);_x000D_
const a = document.createElement('a');_x000D_
a.style.display = 'none';_x000D_
a.href = url;_x000D_
// the filename you want_x000D_
a.download = 'todo-1.json';_x000D_
document.body.appendChild(a);_x000D_
a.click();_x000D_
window.URL.revokeObjectURL(url);_x000D_
alert('your file has downloaded!'); // or you know, something with better UX..._x000D_
})_x000D_
.catch(() => alert('oh no!'));
_x000D_
2012 Original jQuery/iframe/Cookie based approach
Bluish is completely right about this, you can't do it through Ajax because JavaScript cannot save files directly to a user's computer (out of security concerns). Unfortunately pointing the main window's URL at your file download means you have little control over what the user experience is when a file download occurs.
I created jQuery File Download which allows for an "Ajax like" experience with file downloads complete with OnSuccess and OnFailure callbacks to provide for a better user experience. Take a look at my blog post on the common problem that the plugin solves and some ways to use it and also a demo of jQuery File Download in action. Here is the source
Here is a simple use case demo using the plugin source with promises. The demo page includes many other, 'better UX' examples as well.
$.fileDownload('some/file.pdf')
.done(function () { alert('File download a success!'); })
.fail(function () { alert('File download failed!'); });
Depending on what browsers you need to support you may be able to use https://github.com/eligrey/FileSaver.js/ which allows more explicit control than the IFRAME method jQuery File Download uses.
Below command will work in command prompt:
copy c:\folder\file.ext \\dest-machine\destfolder /Z /Y
To Copy all files:
copy c:\folder\*.* \\dest-machine\destfolder /Z /Y
@joeshmo Or instead of writing a helper function, you could just urlencode the base64 encoded string. This would do the exact same thing as your helper function, but without the need of two extra functions.
$str = 'Some String';
$encoded = urlencode( base64_encode( $str ) );
$decoded = base64_decode( urldecode( $encoded ) );
You can use the document compatibility mode to do this, which is what you were trying.. However, thing to note is: It must appear in the Web page's header (the HEAD section) before all other elements, except for the title element and other meta elements Hope that was the issue.. Also, The X-UA-compatible header is not case sensitive Refer: http://msdn.microsoft.com/en-us/library/cc288325%28v=vs.85%29.aspx#SetMode
Edit: in case something happens to kill the msdn link, here is the content:
Specifying Document Compatibility Modes
You can use document modes to control the way Internet Explorer interprets and displays your webpage. To specify a specific document mode for your webpage, use the meta element to include an X-UA-Compatible header in your webpage, as shown in the following example.
<html> <head> <!-- Enable IE9 Standards mode --> <meta http-equiv="X-UA-Compatible" content="IE=9" > <title>My webpage</title> </head> <body> <p>Content goes here.</p> </body> </html>
If you view this webpage in Internet Explorer 9, it will be displayed in IE9 mode.
The following example specifies EmulateIE7 mode.
<html> <head> <!-- Mimic Internet Explorer 7 --> <meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7" > <title>My webpage</title> </head> <body> <p>Content goes here.</p> </body> </html>
In this example, the X-UA-Compatible header directs Internet Explorer to mimic the behavior of Internet Explorer 7 when determining how to display the webpage. This means that Internet Explorer will use the directive (or lack thereof) to choose the appropriate document type. Because this page does not contain a directive, the example would be displayed in IE5 (Quirks) mode.
There are three ways to keep the model in sync.
Delete the modified tables from the designer, and drag them back onto the designer surface from the Database Explorer. I have found that, for this to work reliably, you have to:
a. Refresh the database schema in the Database Explorer (right-click, refresh)
b. Save the designer after deleting the tables
c. Save again after dragging the tables back.
Note though that if you have modified any properties (for instance, turning off the child property of an association), this will obviously lose those modifications — you'll have to make them again.
Use SQLMetal to regenerate the schema from your database. I have seen a number of blog posts that show how to script this.
Make changes directly in the Properties pane of the DBML. This works for simple changes, like allowing nulls on a field.
The DBML designer is not installed by default in Visual Studio 2015, 2017 or 2019. You will have to close VS, start the VS installer and modify your installation. The LINQ to SQL tools is the feature you must install. For VS 2017/2019, you can find it under Individual Components > Code Tools.
I've had great success with TopShelf.
TopShelf is a Nuget package designed to make it easy to create .NET Windows apps that can run as console apps or as Windows Services. You can quickly hook up events such as your service Start and Stop events, configure using code e.g. to set the account it runs as, configure dependencies on other services, and configure how it recovers from errors.
From the Package Manager Console (Nuget):
Install-Package Topshelf
Refer to the code samples to get started.
Example:
HostFactory.Run(x =>
{
x.Service<TownCrier>(s =>
{
s.ConstructUsing(name=> new TownCrier());
s.WhenStarted(tc => tc.Start());
s.WhenStopped(tc => tc.Stop());
});
x.RunAsLocalSystem();
x.SetDescription("Sample Topshelf Host");
x.SetDisplayName("Stuff");
x.SetServiceName("stuff");
});
TopShelf also takes care of service installation, which can save a lot of time and removes boilerplate code from your solution. To install your .exe as a service you just execute the following from the command prompt:
myservice.exe install -servicename "MyService" -displayname "My Service" -description "This is my service."
You don't need to hook up a ServiceInstaller and all that - TopShelf does it all for you.
Just type the commands
cd /Library/Developer/CommandLineTools/Packages/;
open macOS_SDK_headers_for_macOS_10.14.pkg
Since it is a HashSet you will need to override hashCode and equals methods. http://preciselyconcise.com/java/collections/d_set.php has an example explaining how to implement hashCode and equals methods
I had the same issue and deleted the complete schema from the database, yet the issue remained.
I solved this by running the repair()
command of flyway:
flyway.repair();
Alternatively with Flyway Maven plugin:
mvn flyway:repair
Maven plugin addition into pom.xml:
<plugin>
<groupId>org.flywaydb</groupId>
<artifactId>flyway-maven-plugin</artifactId>
<version>5.2.4</version>
</plugin>
BTW: I did not find what exactly went wrong.
With Gradle (as per comment from Raf):
./gradlew flywayRepair
Given that your strings are all fixed-length (presumably at compile-time?), you can do the following:
char (*orderedIds)[ID_LEN+1]
= malloc(variableNumberOfElements * sizeof(*orderedIds));
// Clear-up
free(orderedIds);
A more cumbersome, but more general, solution, is to assign an array of pointers, and psuedo-initialising them to point at elements of a raw backing array:
char *raw = malloc(variableNumberOfElements * (ID_LEN + 1));
char **orderedIds = malloc(sizeof(*orderedIds) * variableNumberOfElements);
// Set each pointer to the start of its corresponding section of the raw buffer.
for (i = 0; i < variableNumberOfElements; i++)
{
orderedIds[i] = &raw[i * (ID_LEN+1)];
}
...
// Clear-up pointer array
free(orderedIds);
// Clear-up raw array
free(raw);
First make sure you have installed Nginx with the HTTP rewrite module. To install this we need to have pcre-library
If the above mentioned are done or if you already have them, then just add the below code in your nginx server block
if ($host !~* ^www\.) {
rewrite ^(.*)$ http://www.$host$1 permanent;
}
To remove www from every request you can use
if ($host = 'www.your_domain.com' ) {
rewrite ^/(.*)$ http://your_domain.com/$1 permanent;
}
so your server block will look like
server {
listen 80;
server_name test.com;
if ($host !~* ^www\.) {
rewrite ^(.*)$ http://www.$host$1 permanent;
}
client_max_body_size 10M;
client_body_buffer_size 128k;
root /home/test/test/public;
passenger_enabled on;
rails_env production;
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root html;
}
}
You should use Terms Query
{
"query" : {
"terms" : {
"tags" : ["c", "d"]
}
}
}
you can do this by two method
drag two text box
tabindex value to 0 of textbox2
Write-Host "filesizecounter : " $filesizecounter
They're both the same thing, a lot of framework elements expose a name property themselves, but for those that don't you can use x:name - I usually just stick with x:name because it works for everything.
Controls can expose name themselves as a Dependency Property if they want to (because they need to use that Dependency Property internally), or they can choose not to.
More details in msdn here and here:
Some WPF framework-level applications might be able to avoid any use of the x:Name attribute, because the Name dependency property as specified within the WPF namespace for several of the important base classes such as FrameworkElement/FrameworkContentElement satisfies this same purpose. There are still some common XAML and framework scenarios where code access to an element with no Name property is necessary, most notably in certain animation and storyboard support classes. For instance, you should specify x:Name on timelines and transforms created in XAML, if you intend to reference them from code.
If Name is available as a property on the class, Name and x:Name can be used interchangeably as attributes, but an error will result if both are specified on the same element.
Give a try to this
@Override
public void destroyItem(ViewGroup container, int position, Object object) {
// TODO Auto-generated method stub
FragmentManager manager = ((Fragment) object).getFragmentManager();
FragmentTransaction trans = manager.beginTransaction();
trans.remove((Fragment) object);
trans.commit();
super.destroyItem(container, position, object);
}
>>> dict(zip([1, 2, 3, 4], ['a', 'b', 'c', 'd']))
{1: 'a', 2: 'b', 3: 'c', 4: 'd'}
If they are not the same size, zip
will truncate the longer one.
Link function only gets called once, so it would not directly do what you are expecting. You need to use angular $watch
to watch a model variable.
This watch needs to be setup in the link function.
If you use isolated scope for directive then the scope would be
scope :{typeId:'@' }
In your link function then you add a watch like
link: function(scope, element, attrs) {
scope.$watch("typeId",function(newValue,oldValue) {
//This gets called when data changes.
});
}
If you are not using isolated scope use watch on some_prop
Maybe it's possible to debug PHP on Visual Studio, but it's simpler and more logical to use Eclipse PDT or Netbeans IDE for your PHP projects, aside from Visual Studio if you need to use both technologies from two different vendors.
It's also a good idea to make sure you're using the correct version of jQuery. I had recently acquired a project using jQuery 1.6.2 that wasn't working with the hoverIntent plugin. Upgrading it to the most recent version fixed that for me.
In my case, I had a page where it was an input type='date'
whose reference I had got on page load, but When I tried to interact with it, it showed this exception
and that was quite meaningful as Javascript
had manipulated my control hence it was detached from the document and I had to re-get
its reference after the javascript had performed its job with the control.
So, this is how my code looked before the exception:
if (elemDate != null)
{
elemDate.Clear();
elemDate.SendKeys(model.Age);
}
Code after the exception was raised:
int tries = 0;
do
{
try
{
tries++;
if (elemDate != null)
{
// these lines were causing the exception so I had break after these are successfully executed because if they are executed that means the control was found and attached to the document and we have taken the reference of it again.
elemDate.Clear();
elemDate.SendKeys(model.Age);
break;
}
}
catch (StaleElementReferenceException)
{
System.Threading.Thread.Sleep(10); // put minor fake delay so Javascript on page does its actions with controls
elemDate = driver.FindElement(By.Id(dateId));
}
} while (tries < 3); // Try it three times.
So, Now you can perform further actions with your code or you can quit the driver if it was unsuccessful in getting the control to work.
if(tries > 2)
{
// element was not found, find out what is causing the control detachment.
// driver.Quit();
return;
}
// Hurray!! Control was attached and actions were performed.
// Do something with it...
Something that I have learnt so far is, catching exceptions to know about successful code execution is not a good idea, But, I had to do it and I found this
work-around
to be working well in this case.
PS: After writing all this, I just noticed the tags that this thread was for java
. This code sample is just for demonstration purpose, It might help people who have issue in C#
language. Or it can be easily translated to java
as it doesn't have much C#
specific code.
There is no portable function that allows to check if a key is hit and continue if not. This is always system dependent.
Solution for linux and other posix compliant systems:
Here, for Morgan Mattews's code provide kbhit()
functionality in a way compatible with any POSIX compliant system. He uses the trick of desactivating buffering at termios level.
Solution for windows:
For windows, Microsoft offers _kbhit()
public static final String URL = "jdbc:sqlserver://localhost:1433;databaseName=dbName";
public static final String USERNAME = "xxxx";
public static final String PASSWORD = "xxxx";
/**
* This method
@param args command line argument
*/
public static void main(String[] args)
{
try
{
Connection connection;
DriverManager.registerDriver(new com.microsoft.sqlserver.jdbc.SQLServerDriver());
connection = DriverManager.getConnection(MainDriver.URL,MainDriver.USERNAME,
MainDriver.PASSWORD);
String query ="select * from employee";
Statement statement = connection.createStatement();
ResultSet resultSet = statement.executeQuery(query);
while(resultSet.next())
{
System.out.print("First Name: " + resultSet.getString("first_name"));
System.out.println(" Last Name: " + resultSet.getString("last_name"));
}
}catch(Exception ex)
{
ex.printStackTrace();
}
}
Use Instant
, replacement for java.util.Date
.
Instant.now() // Capture current moment as seen in UTC.
If you must have a Date
, convert.
java.util.Date.from( Instant.now() )
The java.util.Date & .Calendar classes have been supplanted by the java.time framework built into Java 8 and later. The new classes are a tremendous improvement, inspired by the successful Joda-Time library.
The java.time classes tend to use static factory methods rather than constructors for instantiating objects.
To get the current moment in UTC time zone:
Instant instant = Instant.now();
To get the current moment in a particular time zone:
ZoneId zoneId = ZoneId.of( "America/Montreal" );
ZonedDateTime zdt = ZonedDateTime.now( zoneId );
If you must have a java.util.Date for use with other classes not yet updated for the java.time types, convert from Instant
.
java.util.Date date = java.util.Date.from( zdt.toInstant() );
The java.time framework is built into Java 8 and later. These classes supplant the troublesome old legacy date-time classes such as java.util.Date
, Calendar
, & SimpleDateFormat
.
To learn more, see the Oracle Tutorial. And search Stack Overflow for many examples and explanations. Specification is JSR 310.
The Joda-Time project, now in maintenance mode, advises migration to the java.time classes.
You may exchange java.time objects directly with your database. Use a JDBC driver compliant with JDBC 4.2 or later. No need for strings, no need for java.sql.*
classes.
Where to obtain the java.time classes?
The ThreeTen-Extra project extends java.time with additional classes. This project is a proving ground for possible future additions to java.time. You may find some useful classes here such as Interval
, YearWeek
, YearQuarter
, and more.
I faced similar problems. The article that helped me solve similar issues is by MKyong and is here: ****https://www.mkyong.com/maven/how-to-install-maven-in-windows/**** It is very important to include in maven's path the file that contains the 'bin','boot', 'conf', 'lib' etc. file folders. For example, in my case, the correct path is: C:\Program Files\Apache Software Foundation\maven\apache-maven-3.5.0-bin\apache-maven-3.5.0
Len is what you want.
word = "habit"
length = Len(word)
I have faced this error, Previous I had push in root directory, and now I have push another directory, so I could be remove this error and run below commands.
git add .
git commit -m "some comments"
git push --set-upstream origin master
The AutoPostBack property is used to set or return whether or not an automatic post back occurs when the user presses "ENTER" or "TAB" in the TextBox control.
If this property is set to TRUE the automatic post back is enabled, otherwise FALSE. Default is FALSE.
Check this:
The TEXTAREA element creates a multi-line text input control
Following are major difference between HashMap and TreeMap
HashMap does not maintain any order. In other words , HashMap does not provide any guarantee that the element inserted first will be printed first, where as Just like TreeSet , TreeMap elements are also sorted according to the natural ordering of its elements
Internal HashMap implementation use Hashing and TreeMap internally uses Red-Black tree implementation.
HashMap can store one null key and many null values.TreeMap can not contain null keys but may contain many null values.
HashMap take constant time performance for the basic operations like get and put i.e O(1).According to Oracle docs , TreeMap provides guaranteed log(n) time cost for the get and put method.
HashMap is much faster than TreeMap, as performance time of HashMap is constant against the log time TreeMap for most operations.
HashMap uses equals() method in comparison while TreeMap uses compareTo() method for maintaining ordering.
HashMap implements Map interface while TreeMap implements NavigableMap interface.
Use absolute positioning
.child-div {
position:absolute;
left:0;
right:0;
}
This solution worked for me.
DECLARE @kill varchar(8000) = '';
SELECT @kill = @kill + 'kill ' + CONVERT(varchar(5), session_id) + ';'
FROM sys.dm_exec_sessions
WHERE database_id = db_id('MyDB')
EXEC(@kill);
Not necessarily true. It will be encrypted on the wire however it still lands in the logs plain text
I think introduction to Algorithms is the reference books, and a must have for any serious programmer.
http://en.wikipedia.org/wiki/Introduction_to_Algorithms
Other fun book is The algorithm design manual http://www.algorist.com/. It covers more sophisticated algorithms.
I can't not mention The art of computer programming of Knuth http://www-cs-faculty.stanford.edu/~knuth/taocp.html
The above examples are quite helpful. But, if we want to check if a particular row is having a particular value or not. If yes then delete and break and in case of no value found straight throw error. Below code works:
foreach (DataRow row in dtData.Rows)
{
if (row["Column_name"].ToString() == txtBox.Text)
{
// Getting the sequence number from the textbox.
string strName1 = txtRowDeletion.Text;
// Creating the SqlCommand object to access the stored procedure
// used to get the data for the grid.
string strDeleteData = "Sp_name";
SqlCommand cmdDeleteData = new SqlCommand(strDeleteData, conn);
cmdDeleteData.CommandType = System.Data.CommandType.StoredProcedure;
// Running the query.
conn.Open();
cmdDeleteData.ExecuteNonQuery();
conn.Close();
GetData();
dtData = (DataTable)Session["GetData"];
BindGrid(dtData);
lblMsgForDeletion.Text = "The row successfully deleted !!" + txtRowDeletion.Text;
txtRowDeletion.Text = "";
break;
}
else
{
lblMsgForDeletion.Text = "The row is not present ";
}
}
You have to use ==
to compare (or even ===
, if you want to compare types). A single =
is for assignment.
if (one == 'rock' && two == 'rock') {
console.log('Tie! Try again!');
}
For tab separated values the code below can be used
sort -t$'\t' -k2 -n
-r can be used for getting data in descending order.
-n for numerical sort
-k, --key=POS1[,POS2] where k is column in file
For descending order below is the code
sort -t$'\t' -k2 -rn
Which whitespace character? The empty string is pretty unambiguous - it's a sequence of 0 characters. However, " "
, "\t"
and "\n"
are all strings containing a single character which is characterized as whitespace.
If you just mean a space, use a space. If you mean some other whitespace character, there may well be a custom escape sequence for it (e.g. "\t"
for tab) or you can use a Unicode escape sequence ("\uxxxx"
). I would discourage you from including non-ASCII characters in your source code, particularly whitespace ones.
EDIT: Now that you've explained what you want to do (which should have been in your question to start with) you'd be better off using Regex.Split
with a regular expression of \s
which represents whitespace:
Regex regex = new Regex(@"\s");
string[] bits = regex.Split(text.ToLower());
See the Regex Character Classes documentation for more information on other character classes.
I know this is an old question, but I solved this problem w jQuery.
function printContents(id) {
var contents = $("#"+id).html();
if ($("#printDiv").length == 0) {
var printDiv = null;
printDiv = document.createElement('div');
printDiv.setAttribute('id','printDiv');
printDiv.setAttribute('class','printable');
$(printDiv).appendTo('body');
}
$("#printDiv").html(contents);
window.print();
$("#printDiv").remove();
}
CSS
@media print {
.non-printable, .fancybox-outer { display: none; }
.printable, #printDiv {
display: block;
font-size: 26pt;
}
}
The problem with using the git hash as the build number is that it's not monotonically increasing. OSGi suggests using a time-stamp for the build number. It looks like the number of commits to the branch could be used in place of the subversion or perforce change number.
It might be worth adding here there are a few pointers when using the @ you should be aware of, for a complete run down view this post: http://mstd.eu/index.php/2016/06/30/php-rapid-fire-what-is-the-symbol-used-for-in-php/
The error handler is still fired even with the @ symbol prepended, it just means a error level of 0 is set, this will have to be handled appropriately in a custom error handler.
Prepending a include with @ will set all errors in the include file to an error level of 0
Use .push:
items.push({'id':5});
# select columns containing 'spike'
df.filter(like='spike', axis=1)
You can also select by name, regular expression. Refer to: pandas.DataFrame.filter
i got the same problem so tried so many things but finally this is the solution.
import time
print (time.strftime("%d/%m/%Y"))
If you're using Python3.x input
will return a string,so you should use int
method to convert string to integer.
If the prompt argument is present, it is written to standard output without a trailing newline. The function then reads a line from input, converts it to a string (stripping a trailing newline), and returns that. When EOF is read, EOFError is raised.
By the way,it's a good way to use try
catch
if you want to convert string to int:
try:
i = int(s)
except ValueError as err:
pass
Hope this helps.
In Python, "privacy" depends on "consenting adults'" levels of agreement - you can't force it (any more than you can in real life;-). A single leading underscore means you're not supposed to access it "from the outside" -- two leading underscores (w/o trailing underscores) carry the message even more forcefully... but, in the end, it still depends on social convention and consensus: Python's introspection is forceful enough that you can't handcuff every other programmer in the world to respect your wishes.
((Btw, though it's a closely held secret, much the same holds for C++: with most compilers, a simple #define private public
line before #include
ing your .h
file is all it takes for wily coders to make hash of your "privacy"...!-))
You can simply use this in C++17
for(auto i : str) putchar(toupper(i));
PHP 5.4 and later have a built-in web server these days.
You simply run the command from the terminal:
cd path/to/your/app
php -S 127.0.0.1:8000
Then in your browser go to http://127.0.0.1:8000
and boom, your system should be up and running. (There must be an index.php or index.html file for this to work.)
You could also add a simple Router
<?php
// router.php
if (preg_match('/\.(?:png|jpg|jpeg|gif)$/', $_SERVER["REQUEST_URI"])) {
return false; // serve the requested resource as-is.
} else {
require_once('resolver.php');
}
?>
And then run the command
php -S 127.0.0.1:8000 router.php
References:
To squash your local branch before pushing it:
checkout the branch in question to work on if it is not already checked out.
Find the sha of the oldest commit you wish to keep.
Create/checkout a new branch (tmp1) from that commit.
git checkout -b tmp1 <sha1-of-commit>
Merge the original branch into the new one squashing.
git merge --squash <original branch>
Commit the changes which have been created by the merge, with a summary commit message.
git commit -m <msg>
Checkout the original branch you want to squash.
git checkout <branch>
Reset to the original commit sha you wish to keep.
git reset --soft <sha1>
Rebase this branch based on the new tmp1 branch.
git rebase tmp1
That's it - now delete the temporary tmp1 branch once you're sure everything is ok.
No, anonymous types cannot implement an interface. From the C# programming guide:
Anonymous types are class types that consist of one or more public read-only properties. No other kinds of class members such as methods or events are allowed. An anonymous type cannot be cast to any interface or type except for object.
I needed to do this on a Cygwin setup on Windows 7 and found that I got syntax errors with the suggestions from above that I tried (though I may have missed a working option). However, this solution straight from Ubuntu forums worked out of the can :-)
ls | while read upName; do loName=`echo "${upName}" | tr '[:upper:]' '[:lower:]'`; mv "$upName" "$loName"; done
(NB: I had previously replaced whitespace with underscores using:
for f in *\ *; do mv "$f" "${f// /_}"; done
)
According to the fs
documentation, fsPromises
currently provides the recursive
option on an experimental basis, which, at least in my own case on Windows, removes the directory and any files therein.
fsPromises.rmdir(path, {
recursive: true
})
Does recursive: true
remove the files on Linux and MacOS?
You don't need the "
to define a regular expression so just:
var regex = /(?!(?:[^<]+>|[^>]+<\/a>))\b(value)\b/is; // this is valid syntax
If value
is a variable and you want a dynamic regular expression then you can't use this notation; use the alternative notation.
String.replace
also accepts strings as input, so you can do "fox".replace("fox", "bear");
Alternative:
var regex = new RegExp("/(?!(?:[^<]+>|[^>]+<\/a>))\b(value)\b/", "is");
var regex = new RegExp("/(?!(?:[^<]+>|[^>]+<\/a>))\b(" + value + ")\b/", "is");
var regex = new RegExp("/(?!(?:[^<]+>|[^>]+<\/a>))\b(.*?)\b/", "is");
Keep in mind that if value
contains regular expressions characters like (
, [
and ?
you will need to escape them.
var BrowserDetect = {
init: function () {
this.browser = this.searchString(this.dataBrowser) || "Other";
this.version = this.searchVersion(navigator.userAgent) || this.searchVersion(navigator.appVersion) || "Unknown";
},
searchString: function (data) {
for (var i = 0; i < data.length; i++) {
var dataString = data[i].string;
this.versionSearchString = data[i].subString;
if (dataString.indexOf(data[i].subString) !== -1) {
return data[i].identity;
}
}
},
searchVersion: function (dataString) {
var index = dataString.indexOf(this.versionSearchString);
if (index === -1) {
return;
}
var rv = dataString.indexOf("rv:");
if (this.versionSearchString === "Trident" && rv !== -1) {
return parseFloat(dataString.substring(rv + 3));
} else {
return parseFloat(dataString.substring(index + this.versionSearchString.length + 1));
}
},
dataBrowser: [
{string: navigator.userAgent, subString: "Edge", identity: "MS Edge"},
{string: navigator.userAgent, subString: "MSIE", identity: "Explorer"},
{string: navigator.userAgent, subString: "Trident", identity: "Explorer"},
{string: navigator.userAgent, subString: "Firefox", identity: "Firefox"},
{string: navigator.userAgent, subString: "Opera", identity: "Opera"},
{string: navigator.userAgent, subString: "OPR", identity: "Opera"},
{string: navigator.userAgent, subString: "Chrome", identity: "Chrome"},
{string: navigator.userAgent, subString: "Safari", identity: "Safari"}
]
};
BrowserDetect.init();
var bv= BrowserDetect.browser;
if( bv == "Chrome"){
$("body").addClass("chrome");
}
else if(bv == "MS Edge"){
$("body").addClass("edge");
}
else if(bv == "Explorer"){
$("body").addClass("ie");
}
else if(bv == "Firefox"){
$("body").addClass("Firefox");
}
$(".relative").click(function(){
$(".oc").toggle('slide', { direction: 'left', mode: 'show' }, 500);
$(".oc1").css({
'width' : '100%',
'margin-left' : '0px',
});
});
I think that moving last operator to the beginning of the next line is a good practice. That way you know right away the purpose of the second line, even it doesn't start with an operator. I also recommend 2 indentation spaces (2 tabs) for a previously broken tab, to differ it from the normal indentation. That is immediately visible as continuing previous line. Therefore I suggest this:
private static final Map<Class<? extends Persistent>, PersistentHelper> class2helper
= new HashMap<Class<? extends Persistent>, PersistentHelper>();