The double underscore. It mangles the name in such a way that it can't be accessed simply through __fieldName
from outside the class, which is what you want to begin with if they're to be private. (Though it's still not very hard to access the field.)
class Foo:
def __init__(self):
self.__privateField = 4;
print self.__privateField # yields 4 no problem
foo = Foo()
foo.__privateField
# AttributeError: Foo instance has no attribute '__privateField'
It will be accessible through _Foo__privateField
instead. But it screams "I'M PRIVATE DON'T TOUCH ME", which is better than nothing.
From Android's Developer Documentation on Managing Projects from Eclipse with ADT:
Next, set the project's Properties to indicate that it is a library project:
- In the Package Explorer, right-click the library project and select Properties.
- In the Properties window, select the "Android" properties group at left and locate the Library properties at right.
- Select the "is Library" checkbox and click Apply.
- Click OK to close the Properties window.
So, open your project properties, un-select the "Is Library" checkbox, and click Apply to make your project a normal Android project (not a library project).
Unfortunately, modern browsers do not provide native support for HTTP PUT requests. To work around this limitation, ensure your HTML form’s method attribute is “post”, then add a method override parameter to your HTML form like this:
<input type="hidden" name="_METHOD" value="PUT"/>
To test your requests you can use "Postman" a google chrome extension
I copied the play libs files from the google-play-services_lib to my project libs directory:
Then selected them, right-click, "Add as libraries".
You've got about these four possibilities:
Remote files. This needs allow_url_fopen
to be enabled in php.ini, but it's the easiest method.
Alternatively you could use cURL if your PHP installation supports it. There's even an example.
And if you really want to do it manually use the HTTP module.
Don't even try to use sockets directly.
I use this:
use YourDB;
SELECT
object_name(object_id),
last_execution_time,
last_elapsed_time,
execution_count
FROM
sys.dm_exec_procedure_stats ps
where
lower(object_name(object_id)) like 'Appl-Name%'
order by 1
if (getActivity() == null) return;
works also in some cases. Just breaks the code execution from it and make sure the app not crash
For me @pvskisteak5 answer has caused a "flicker-effect". To fix this, add the following:
.table-hover tbody tr:hover,
.table-hover tbody tr:hover td,
.table-hover tbody tr:hover th{
background:#22313F !important;
color:#fff !important;
}
You can use "Date.parse()" to properly compare the dates, but since in most of the comments people are trying to split the string and then trying to add up the digits and compare with obviously wrong logic -not completely.
Here's the trick. If you are breaking the string then compare the parts in nested format.
Compare year with year, month with month and day with day.
<pre><code>
var parts1 = "26/07/2020".split('/');
var parts2 = "26/07/2020".split('/');
var latest = false;
if (parseInt(parts1[2]) > parseInt(parts2[2])) {
latest = true;
} else if (parseInt(parts1[2]) == parseInt(parts2[2])) {
if (parseInt(parts1[1]) > parseInt(parts2[1])) {
latest = true;
} else if (parseInt(parts1[1]) == parseInt(parts2[1])) {
if (parseInt(parts1[0]) >= parseInt(parts2[0])) {
latest = true;
}
}
}
return latest;
</code></pre>
This is an attempt to improve on Brent Bradburn's great approach as follows:
sh -c
)-f <file>
@
to prevent it from being echoed before executionCuriously, GNU make
has no feature for listing just the names of targets defined in a makefile. While the -p
option produces output that includes all targets, it buries them in a lot of other information and also executes the default target (which could be suppressed with -f/dev/null
).
Place the following rule in a makefile for GNU make
to implement a target named list
that simply lists all target names in alphabetical order - i.e.: invoke as make list
:
.PHONY: list
list:
@$(MAKE) -pRrq -f $(lastword $(MAKEFILE_LIST)) : 2>/dev/null | awk -v RS= -F: '/^# File/,/^# Finished Make data base/ {if ($$1 !~ "^[#.]") {print $$1}}' | sort | egrep -v -e '^[^[:alnum:]]' -e '^$@$$'
Important: On pasting this, make sure that the last line is indented by exactly 1 actual tab char. (spaces do not work).
Note that sorting the resulting list of targets is the best option, since not sorting doesn't produce a helpful ordering in that the order in which the targets appear in the makefile is not preserved.
Also, the sub-targets of a rule comprising multiple targets are invariably output separately and will therefore, due to sorting, usually not appear next to one another; e.g., a rule starting with a z:
will not have targets a
and z
listed next to each other in the output, if there are additional targets.
Explanation of the rule:
.PHONY: list
$(MAKE) -pRrq -f $(lastword $(MAKEFILE_LIST)) : 2>/dev/null
make
again in order to print and parse the database derived from the makefile:
-p
prints the database-Rr
suppresses inclusion of built-in rules and variables-q
only tests the up-to-date-status of a target (without remaking anything), but that by itself doesn't prevent execution of recipe commands in all cases; hence:-f $(lastword $(MAKEFILE_LIST))
ensures that the same makefile is targeted as in the original invocation, regardless of whether it was targeted implicitly or explicitly with -f ...
.include
directives; to address this, define variable THIS_FILE := $(lastword $(MAKEFILE_LIST))
before any include
directives and use -f $(THIS_FILE)
instead.:
is a deliberately invalid target that is meant to ensure that no commands are executed; 2>/dev/null
suppresses the resulting error message. Note: This relies on -p
printing the database nonetheless, which is the case as of GNU make 3.82. Sadly, GNU make offers no direct option to just print the database, without also executing the default (or given) task; if you don't need to target a specific Makefile, you may use make -p -f/dev/null
, as recommended in the man
page.-v RS=
/^# File/,/^# Finished Make data base/
if ($$1 !~ "^[#.]")
#
... ignores non-targets, whose blocks start with # Not a target:
.
... ignores special targets:
egrep -v -e '^[^[:alnum:]]' -e '^$@$$'
removes unwanted targets from the output:
'^[^[:alnum:]]'
... excludes hidden targets, which - by convention - are targets that start neither with a letter nor a digit.'^$@$$'
... excludes the list
target itselfRunning make list
then prints all targets, each on its own line; you can pipe to xargs
to create a space-separated list instead.
Use data type long instead.. dont use int because it only allows whole numbers between -32,768 and 32,767 but if you use long data type you can insert numbers between -2,147,483,648 and 2,147,483,647.
I don't understand why people are willing to work so hard to find a pure-CSS solution for simple columnar layouts that are SO EASY using the old TABLE
tag.
All Browsers still have the table layout logic... Call me a dinosaur perhaps, but I say let it help you.
<table WIDTH=100% border=0 cellspacing=0 cellpadding=2>_x000D_
<tr>_x000D_
<td WIDTH="1" NOWRAP bgcolor="#E0E0E0">Tree</td>_x000D_
<td bgcolor="#F0F0F0">View</td>_x000D_
</tr>_x000D_
</table>
_x000D_
Much less risky in terms of cross-browser compatibility too.
All you have to do is just edit in you.env file, that's it.
MAIL_DRIVER=smtp
MAIL_HOST=smtp.gmail.com
MAIL_PORT=465
MAIL_USERNAME=<your_email_address>
MAIL_PASSWORD=<your_gmail_app_password_>
MAIL_ENCRYPTION=ssl
for app password goto https://support.google.com/accounts/answer/185833?hl=en
and genearate your app pasword and save for future use. because once you generate app password you cannot re-edit password or change same app password.(you can create multiple app password)
What you show looks like a mesh warp. That would be straightforward using OpenGL, but "straightforward OpenGL" is like straightforward rocket science.
I wrote an iOS app for my company called Face Dancerthat's able to do 60 fps mesh warp animations of video from the built-in camera using OpenGL, but it was a lot of work. (It does funhouse mirror type changes to faces - think "fat booth" live, plus lots of other effects.)
Add a listener to the underlying Document, which is automatically created for you.
// Listen for changes in the text
textField.getDocument().addDocumentListener(new DocumentListener() {
public void changedUpdate(DocumentEvent e) {
warn();
}
public void removeUpdate(DocumentEvent e) {
warn();
}
public void insertUpdate(DocumentEvent e) {
warn();
}
public void warn() {
if (Integer.parseInt(textField.getText())<=0){
JOptionPane.showMessageDialog(null,
"Error: Please enter number bigger than 0", "Error Message",
JOptionPane.ERROR_MESSAGE);
}
}
});
You can load HTML page partial, in your case is everything inside div#mytable.
setTimeout(function(){
$( "#mytable" ).load( "your-current-page.html #mytable" );
}, 2000); //refresh every 2 seconds
more information read this http://api.jquery.com/load/
<button id="refresh-btn">Refresh Table</button>
<script>
$(document).ready(function() {
function RefreshTable() {
$( "#mytable" ).load( "your-current-page.html #mytable" );
}
$("#refresh-btn").on("click", RefreshTable);
// OR CAN THIS WAY
//
// $("#refresh-btn").on("click", function() {
// $( "#mytable" ).load( "your-current-page.html #mytable" );
// });
});
</script>
You may find that you have to link with the math libraries on whatever system you're using, something like:
gcc -o myprog myprog.c -L/path/to/libs -lm
^^^ - this bit here.
Including headers lets a compiler know about function declarations but it does not necessarily automatically link to the code required to perform that function.
Failing that, you'll need to show us your code, your compile command and the platform you're running on (operating system, compiler, etc).
The following code compiles and links fine:
#include <math.h>
int main (void) {
int max = sqrt (9);
return 0;
}
Just be aware that some compilation systems depend on the order in which libraries are given on the command line. By that, I mean they may process the libraries in sequence and only use them to satisfy unresolved symbols at that point in the sequence.
So, for example, given the commands:
gcc -o plugh plugh.o -lxyzzy
gcc -o plugh -lxyzzy plugh.o
and plugh.o
requires something from the xyzzy
library, the second may not work as you expect. At the point where you list the library, there are no unresolved symbols to satisfy.
And when the unresolved symbols from plugh.o
do appear, it's too late.
Add below code to your web.config file then run the project...
<runtime>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentAssembly>
<assemblyIdentity name="Microsoft.Owin.Security" publicKeyToken="31bf3856ad364e35"/>
<bindingRedirect oldVersion="1.0.0.0-3.0.1.0" newVersion="3.0.1.0"/>
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="Microsoft.Owin.Security.OAuth" publicKeyToken="31bf3856ad364e35"/>
<bindingRedirect oldVersion="1.0.0.0-3.0.1.0" newVersion="3.0.1.0"/>
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="Microsoft.Owin.Security.Cookies" publicKeyToken="31bf3856ad364e35"/>
<bindingRedirect oldVersion="1.0.0.0-3.0.1.0" newVersion="3.0.1.0"/>
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="Microsoft.Owin" publicKeyToken="31bf3856ad364e35"/>
<bindingRedirect oldVersion="1.0.0.0-3.0.1.0" newVersion="3.0.1.0"/>
</dependentAssembly>
</runtime>
In Intellij v2017.2 you can go to:
run > edit configurations > click ... next to the field 'Environment variables' > click the green + sign
Name= PYTHONPATH
value= your_python_path
Looking at the output of the preprocessor is the closest thing to the answer you ask for.
I know you've excluded that (and other ways), but I'm not sure why. You have a specific enough problem to solve, but you have not explained why any of the "normal" methods don't work well for you.
In my case, I needed to copy the google-play-services_lib FOLDER in the same DRIVE of the source codes of my apps
It can be done using ctypes:
import ctypes
from ctypes import wintypes
import time
user32 = ctypes.WinDLL('user32', use_last_error=True)
INPUT_MOUSE = 0
INPUT_KEYBOARD = 1
INPUT_HARDWARE = 2
KEYEVENTF_EXTENDEDKEY = 0x0001
KEYEVENTF_KEYUP = 0x0002
KEYEVENTF_UNICODE = 0x0004
KEYEVENTF_SCANCODE = 0x0008
MAPVK_VK_TO_VSC = 0
# msdn.microsoft.com/en-us/library/dd375731
VK_TAB = 0x09
VK_MENU = 0x12
# C struct definitions
wintypes.ULONG_PTR = wintypes.WPARAM
class MOUSEINPUT(ctypes.Structure):
_fields_ = (("dx", wintypes.LONG),
("dy", wintypes.LONG),
("mouseData", wintypes.DWORD),
("dwFlags", wintypes.DWORD),
("time", wintypes.DWORD),
("dwExtraInfo", wintypes.ULONG_PTR))
class KEYBDINPUT(ctypes.Structure):
_fields_ = (("wVk", wintypes.WORD),
("wScan", wintypes.WORD),
("dwFlags", wintypes.DWORD),
("time", wintypes.DWORD),
("dwExtraInfo", wintypes.ULONG_PTR))
def __init__(self, *args, **kwds):
super(KEYBDINPUT, self).__init__(*args, **kwds)
# some programs use the scan code even if KEYEVENTF_SCANCODE
# isn't set in dwFflags, so attempt to map the correct code.
if not self.dwFlags & KEYEVENTF_UNICODE:
self.wScan = user32.MapVirtualKeyExW(self.wVk,
MAPVK_VK_TO_VSC, 0)
class HARDWAREINPUT(ctypes.Structure):
_fields_ = (("uMsg", wintypes.DWORD),
("wParamL", wintypes.WORD),
("wParamH", wintypes.WORD))
class INPUT(ctypes.Structure):
class _INPUT(ctypes.Union):
_fields_ = (("ki", KEYBDINPUT),
("mi", MOUSEINPUT),
("hi", HARDWAREINPUT))
_anonymous_ = ("_input",)
_fields_ = (("type", wintypes.DWORD),
("_input", _INPUT))
LPINPUT = ctypes.POINTER(INPUT)
def _check_count(result, func, args):
if result == 0:
raise ctypes.WinError(ctypes.get_last_error())
return args
user32.SendInput.errcheck = _check_count
user32.SendInput.argtypes = (wintypes.UINT, # nInputs
LPINPUT, # pInputs
ctypes.c_int) # cbSize
# Functions
def PressKey(hexKeyCode):
x = INPUT(type=INPUT_KEYBOARD,
ki=KEYBDINPUT(wVk=hexKeyCode))
user32.SendInput(1, ctypes.byref(x), ctypes.sizeof(x))
def ReleaseKey(hexKeyCode):
x = INPUT(type=INPUT_KEYBOARD,
ki=KEYBDINPUT(wVk=hexKeyCode,
dwFlags=KEYEVENTF_KEYUP))
user32.SendInput(1, ctypes.byref(x), ctypes.sizeof(x))
def AltTab():
"""Press Alt+Tab and hold Alt key for 2 seconds
in order to see the overlay.
"""
PressKey(VK_MENU) # Alt
PressKey(VK_TAB) # Tab
ReleaseKey(VK_TAB) # Tab~
time.sleep(2)
ReleaseKey(VK_MENU) # Alt~
if __name__ == "__main__":
AltTab()
hexKeyCode
is the virtual keyboard mapping as defined by the Windows API. The list of codes is available on MSDN: Virtual-Key Codes (Windows)
From APUE, Section 5.14 :
char good_template[] = "/tmp/dirXXXXXX"; /* right way */
char *bad_template = "/tmp/dirXXXXXX"; /* wrong way*/
... For the first template, the name is allocated on the stack, because we use an array variable. For the second name, however, we use a pointer. In this case, only the memory for the pointer itself resides on the stack; the compiler arranges for the string to be stored in the read-only segment of the executable. When the
mkstemp
function tries to modify the string, a segmentation fault occurs.
The quoted text matches @Ciro Santilli 's explanation.
A Jmeter Test Plan must have listener to showcase the result of performance test execution.
Listeners capture the response coming back from Server while Jmeter runs and showcase in the form of – tree, tables, graphs and log files.
It also allows you to save the result in a file for future reference. There are many types of listeners Jmeter provides. Some of them are: Summary Report, Aggregate Report, Aggregate Graph, View Results Tree, View Results in Table etc.
Here is the detailed understanding of each parameter in Summary report.
By referring to the figure:
Label: It is the name/URL for the specific HTTP(s) Request. If you have selected “Include group name in label?” option then the name of the Thread Group is applied as the prefix to each label.
Samples: This indicates the number of virtual users per request.
Average: It is the average time taken by all the samples to execute specific label. In our case, the average time for Label 1 is 942 milliseconds & total average time is 584 milliseconds.
Min: The shortest time taken by a sample for specific label. If we look at Min value for Label 1 then, out of 20 samples shortest response time one of the sample had was 584 milliseconds.
Max: The longest time taken by a sample for specific label. If we look at Max value for Label 1 then, out of 20 samples longest response time one of the sample had was 2867 milliseconds.
Std. Dev.: This shows the set of exceptional cases which were deviating from the average value of sample response time. The lesser this value more consistent the data. Standard deviation should be less than or equal to half of the average time for a label.
Error%: Percentage of Failed requests per Label.
Throughput: Throughput is the number of request that are processed per time unit(seconds, minutes, hours) by the server. This time is calculated from the start of first sample to the end of the last sample. Larger throughput is better.
KB/Sec: This indicates the amount of data downloaded from server during the performance test execution. In short, it is the Throughput measured in Kilobytes per second.
For more information: http://www.testingjournals.com/understand-summary-report-jmeter/
By default mysqldump
always creates the CREATE DATABASE IF NOT EXISTS db_name;
statement at the beginning of the dump file.
[EDIT] Few things about the mysqldump
file and it's options:
--all-databases
, -A
Dump all tables in all databases. This is the same as using the --databases
option and naming all the databases on the command line.
--add-drop-database
Add a DROP DATABASE
statement before each CREATE DATABASE
statement. This option is typically used in conjunction with the --all-databases
or --databases
option because no CREATE DATABASE
statements are written unless one of those options is specified.
--databases
, -B
Dump several databases. Normally, mysqldump
treats the first name argument on the command line as a database name and following names as table names. With this option, it treats all name arguments as database names. CREATE DATABASE
and USE
statements are included in the output before each new database.
--no-create-db
, -n
This option suppresses the CREATE DATABASE
statements that are otherwise included in the output if the --databases
or --all-databases
option is given.
Some time ago, there was similar question actually asking about not having such statement on the beginning of the file (for XML file). Link to that question is here.
So to answer your question:
--add-drop-database
option in your mysqldump
statement.--databases
or --all-databases
and the CREATE DATABASE
syntax will be added
automaticallyMore information at MySQL Reference Manual
readlines()
will return a list of all the lines in the file, so lines
is a list. You probably want something like this:
for line in f.readlines(): # Iterates through every line and looks for a match
#or
#for line in f:
match = re.findall('[A-Z]+', line)
print match
Or, if the file isn't too large you can grab it as as single string:
lines = f.read() # Warning: reads the FULL FILE into memory. This can be bad.
match = re.findall('[A-Z]+', lines)
print match
You can check the corresponding value as being set and non-empty in either the $_POST or $_GET array depending on your form's action.
i.e.: With a POST form using a name
of "test" (i.e.: <input type="checkbox" name="test">
, you'd use:
if(isset($_POST['test']) {
// The checkbox was enabled...
}
It means that the field is (part of) a non-unique index. You can issue
show create table <table>;
To see more information about the table structure.
As of "X-"-Prefix was deprecated. (see: https://tools.ietf.org/html/rfc6648)
We found the "Accept-Ranges" as being the best bet to map the pagination ranging: https://tools.ietf.org/html/rfc7233#section-2.3 As the "Range Units" may either be "bytes" or "token". Both do not represent a custom data type. (see: https://tools.ietf.org/html/rfc7233#section-4.2) Still, it is stated that
HTTP/1.1 implementations MAY ignore ranges specified using other units.
Which indicates: using custom Range Units is not against the protocol, but it MAY be ignored.
This way, we would have to set the Accept-Ranges to "members" or whatever ranged unit type, we'd expect. And in addition, also set the Content-Range to the current range. (see: https://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.12)
Either way, I would stick to the recommendation of RFC7233 (https://tools.ietf.org/html/rfc7233#page-8) to send a 206 instead of 200:
If all of the preconditions are true, the server supports the Range
header field for the target resource, and the specified range(s) are
valid and satisfiable (as defined in Section 2.1), the server SHOULD
send a 206 (Partial Content) response with a payload containing one
or more partial representations that correspond to the satisfiable
ranges requested, as defined in Section 4.
So, as a result, we would have the following HTTP header fields:
For Partial Content:
206 Partial Content
Accept-Ranges: members
Content-Range: members 0-20/100
For full Content:
200 OK
Accept-Ranges: members
Content-Range: members 0-20/20
Just remember set method to POST in options. Here is my code
var options = {
url: 'http://www.example.com',
method: 'POST', // Don't forget this line
headers: {
'Content-Type': 'application/x-www-form-urlencoded',
'X-MicrosoftAjax': 'Delta=true', // blah, blah, blah...
'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.97 Safari/537.36',
},
form: {
'key-1':'value-1',
'key-2':'value-2',
...
}
};
//console.log('options:', options);
// Create request to get data
request(options, (err, response, body) => {
if (err) {
//console.log(err);
} else {
console.log('body:', body);
}
});
Another scenario where this could happen is when you are launching an instance of eclipse (for debug etc.) from a host eclipse - in which case, altering the project's level or JRE library on the project's classpath alone doesn't help. What matters is the JRE used to launch the target eclipse environment.
Last time I checked, Java is not capable of natively doing what you want; you have to use 'work-arounds' to get around such limitations. As far as I see it, interfaces ARE an alternative, but not a good alternative. Perhaps whoever told you that was meaning something like this:
public interface ComponentMethod {
public abstract void PerfromMethod(Container c);
}
public class ChangeColor implements ComponentMethod {
@Override
public void PerfromMethod(Container c) {
// do color change stuff
}
}
public class ChangeSize implements ComponentMethod {
@Override
public void PerfromMethod(Container c) {
// do color change stuff
}
}
public void setAllComponents(Component[] myComponentArray, ComponentMethod myMethod) {
for (Component leaf : myComponentArray) {
if (leaf instanceof Container) { //recursive call if Container
Container node = (Container) leaf;
setAllComponents(node.getComponents(), myMethod);
} //end if node
myMethod.PerfromMethod(leaf);
} //end looping through components
}
Which you'd then invoke with:
setAllComponents(this.getComponents(), new ChangeColor());
setAllComponents(this.getComponents(), new ChangeSize());
Use the default constructor for Socket and then use the connect() method.
The original answer from https://github.com/philipwalton/flexbugs/issues/231#issuecomment-362790042
.flex-container{
min-height:100px;
display:flex;
align-items:center;
}
.flex-container:after{
content:'';
min-height:inherit;
font-size:0;
}
My guess is that you are trying to restore in lower versions which wont work
use this tag {!! description text !!}
It should be like this
for(int j = 0; j<=90; j += 3)
but watch out for
for(int j = 0; j<=90; j =+ 3)
or
for(int j = 0; j<=90; j = j + 3)
In addition to bchhun's great answer, if you want absoulte positioning, you can do this
var options = {
placement: function (context, source) {
setTimeout(function () {
$(context).css('top',(source.getBoundingClientRect().top+ 500) + 'px')
},0)
return "top";
},
trigger: "click"
};
$(".infopoint").popover(options);
Here how it looks for Swift 4:
import MessageUI
if MFMailComposeViewController.canSendMail() {
let mail = MFMailComposeViewController()
mail.mailComposeDelegate = self
mail.setToRecipients(["[email protected]"])
mail.setSubject("Bla")
mail.setMessageBody("<b>Blabla</b>", isHTML: true)
present(mail, animated: true, completion: nil)
} else {
print("Cannot send mail")
// give feedback to the user
}
func mailComposeController(_ controller: MFMailComposeViewController, didFinishWith result: MFMailComposeResult, error: Error?) {
switch result.rawValue {
case MFMailComposeResult.cancelled.rawValue:
print("Cancelled")
case MFMailComposeResult.saved.rawValue:
print("Saved")
case MFMailComposeResult.sent.rawValue:
print("Sent")
case MFMailComposeResult.failed.rawValue:
print("Error: \(String(describing: error?.localizedDescription))")
default:
break
}
controller.dismiss(animated: true, completion: nil)
}
If you want not to type class name twice during instantiation like in:
new SomeContainer<SomeType>(SomeType.class);
You can use factory method:
<E> SomeContainer<E> createContainer(Class<E> class);
Like in:
public class Container<E> {
public static <E> Container<E> create(Class<E> c) {
return new Container<E>(c);
}
Class<E> c;
public Container(Class<E> c) {
super();
this.c = c;
}
public E createInstance()
throws InstantiationException,
IllegalAccessException {
return c.newInstance();
}
}
Going further with the rev-list
option, if you want to find the most recent merge commit from your master branch into your production branch (as a purely hypothetical example):
git checkout `git rev-list -n 1 --merges --first-parent --before="2012-01-01" production`
I needed to find the code that was on the production servers as of a given date. This found it for me.
Shift
+ Alt
+ F
indents the whole file.
For those who are looking for a date-only solution, it is:
import datetime
datetime.date.today().isoformat()
The translation is correct, the typing of the expression isn't. TypeScript is incorrectly typing the expression new Thing[100]
as an array. It should be an error to index Thing
, a constructor function, using the index operator. In C# this would allocate an array of 100 elements. In JavaScript this calls the value at index 100 of Thing
as if was a constructor. Since that values is undefined
it raises the error you mentioned. In JavaScript and TypeScript you want new Array(100)
instead.
You should report this as a bug on CodePlex.
The results = 'hide'
option doesn't prevent other messages to be printed.
To hide them, the following options are useful:
{r, error=FALSE}
{r, warning=FALSE}
{r, message=FALSE}
In every case, the corresponding warning, error or message will be printed to the console instead.
If you are looking for a better code editor, vim comes with VisVim, a plugin to replace the VS code editor with vim.
If you use the nextLine() method immediately following the nextInt() method, nextInt() reads integer tokens; because of this, the last newline character for that line of integer input is still queued in the input buffer and the next nextLine() will be reading the remainder of the integer line (which is empty). So we read can read the empty space to another string might work. Check below code.
import java.util.Scanner;
public class Solution {
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
int i = scan.nextInt();
Double d = scan.nextDouble();
String f = scan.nextLine();
String s = scan.nextLine();
// Write your code here.
System.out.println("String: " + s);
System.out.println("Double: " + d);
System.out.println("Int: " + i);
}
}
Skip all of this. Download Microsoft FUZZY LOOKUP add in. Create tables using your columns. Create a new worksheet. INPUT tables into the tool. Click all corresponding columns check boxes. Use slider for exact matches. HIT go and wait for the magic.
In a relational database system, a one-to-many
table relationship looks as follows:
Note that the relationship is based on the Foreign Key column (e.g., post_id
) in the child table.
So, there is a single source of truth when it comes to managing a one-to-many
table relationship.
Now, if you take a bidirectional entity relationship that maps on the one-to-many
table relationship we saw previously:
If you take a look at the diagram above, you can see that there are two ways to manage this relationship.
In the Post
entity, you have the comments
collection:
@OneToMany(
mappedBy = "post",
cascade = CascadeType.ALL,
orphanRemoval = true
)
private List<PostComment> comments = new ArrayList<>();
And, in the PostComment
, the post
association is mapped as follows:
@ManyToOne(
fetch = FetchType.LAZY
)
@JoinColumn(name = "post_id")
private Post post;
Because there are two ways to represent the Foreign Key column, you must define which is the source of truth when it comes to translating the association state change into its equivalent Foreign Key column value modification.
The mappedBy
attribute tells that the @ManyToOne
side is in charge of managing the Foreign Key column, and the collection is used only to fetch the child entities and to cascade parent entity state changes to children (e.g., removing the parent should also remove the child entities).
Now, even if you defined the mappedBy
attribute and the child-side @ManyToOne
association manages the Foreign Key column, you still need to synchronize both sides of the bidirectional association.
The best way to do that is to add these two utility methods:
public void addComment(PostComment comment) {
comments.add(comment);
comment.setPost(this);
}
public void removeComment(PostComment comment) {
comments.remove(comment);
comment.setPost(null);
}
The addComment
and removeComment
methods ensure that both sides are synchronized. So, if we add a child entity, the child entity needs to point to the parent and the parent entity should have the child contained in the child collection.
document.getElementsByClassName("classstringhere").length
The document.getElementsByClassName("classstringhere")
method returns an array of all the elements with that class name, so .length
gives you the amount of them.
I think of %w()
as a "word array" - the elements are delimited by spaces and it returns an array of strings.
There are other % literals:
%r()
is another way to write a regular expression.%q()
is another way to write a single-quoted string (and can be multi-line, which is useful)%Q()
gives a double-quoted string%x()
is a shell command%i()
gives an array of symbols (Ruby >= 2.0.0)%s()
turns foo
into a symbol (:foo
)I don't know any others, but there may be some lurking around in there...
The solution provided by Emil Ingerslev is working fine, but CSS is not applied to the output. Here I found a good solution given by Andrewlimaza. It prints the contents of a given div, as it uses the window object's print method, the CSS is not lost. And there is no need for an extra iframe also.
var printContents = document.getElementById("divcontents").innerHTML;
var originalContents = document.body.innerHTML;
document.body.innerHTML = printContents;
window.print();
document.body.innerHTML = originalContents;
Update 1: There is unusual behavior, in chrome/firefox/opera/edge, the print or other buttons stopped working after the execution of this code.
Update 2: The solution given is there on the above link in comments:
.printme { display: none;}
@media print {
.no-printme { display: none;}
.printme { display: block;}
}
<h1 class = "no-printme"> do not print this </h1>
<div class='printme'>
Print this only
</div>
<button onclick={window.print()}>Print only the above div</button>
You need to delete it by order There are dependency in the tables
you can use the left_on and right_on options as follows:
pd.merge(frame_1, frame_2, left_on='county_ID', right_on='countyid')
I was not sure from the question if you only wanted to merge if the key was in the left hand dataframe. If that is the case then the following will do that (the above will in effect do a many to many merge)
pd.merge(frame_1, frame_2, how='left', left_on='county_ID', right_on='countyid')
This query will use index if you have it for signup_date
field
SELECT users.id, DATE_FORMAT(users.signup_date, '%Y-%m-%d')
FROM users
WHERE signup_date >= CURDATE() && signup_date < (CURDATE() + INTERVAL 1 DAY)
import datetime
import pytz
# datetime object with timezone awareness:
datetime.datetime.now(tz=pytz.utc)
# seconds from epoch:
datetime.datetime.now(tz=pytz.utc).timestamp()
# ms from epoch:
int(datetime.datetime.now(tz=pytz.utc).timestamp() * 1000)
Yes, if bar is not None
is more explicit, and thus better, assuming it is indeed what you want. That's not always the case, there are subtle differences: if not bar:
will execute if bar
is any kind of zero or empty container, or False
.
Many people do use not bar
where they really do mean bar is not None
.
The number in parentheses specifies the precision of fractional seconds to be stored. So, (0)
would mean don't store any fraction of a second, and use only whole seconds. The default value if unspecified is 6 digits after the decimal separator.
So an unspecified value would store a date like:
TIMESTAMP 24-JAN-2012 08.00.05.993847 AM
And specifying (0)
stores only:
TIMESTAMP(0) 24-JAN-2012 08.00.05 AM
I use iFrame to insert the content from another page and CSS mentioned above is NOT working as expected. I have to use the parameter scrolling="no" even if I use HTML 5 Doctype
If you are using Spring Boot, you might want to make sure you have the Jackson dependency in your classpath. You can do this manually via:
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
</dependency>
Or you can use the web starter:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
The Composer bin directory is set and stored in bin-dir
config variable and can be different depending on your setup. Running the command composer global config bin-dir --absolute
will tell you the absolute path to your global composer bin directory. Using this command you can modify your .bash_profile
to add it to your PATH
exactly how it is configured.
# Add Composer bin-dir to PATH if it is installed.
command -v composer >/dev/null 2>&1 && {
COMPOSER_BIN_DIR=$(composer global config bin-dir --absolute 2> /dev/null)
PATH="$PATH:$COMPOSER_BIN_DIR";
}
export PATH
git checkout HEAD~ path/to/file
git commit --amend
The class you need is System.Uri
Dim url As System.Uri = Request.UrlReferrer
Debug.WriteLine(url.AbsoluteUri) ' => http://www.mysite.com/default.aspx
Debug.WriteLine(url.AbsolutePath) ' => /default.aspx
Debug.WriteLine(url.Host) ' => http:/www.mysite.com
Debug.WriteLine(url.Port) ' => 80
Debug.WriteLine(url.IsLoopback) ' => False
The Process static class has a method GetProcessesByName() which you can use to search through running processes. Just search for any other process with the same executable name.
You have set the upstream of that branch
(see:
--set-upstream-to
all the time?"git branch -f --track my_local_branch origin/my_remote_branch # OR (if my_local_branch is currently checked out): $ git branch --set-upstream-to my_local_branch origin/my_remote_branch
(git branch -f --track
won't work if the branch is checked out: use the second command git branch --set-upstream-to
instead, or you would get "fatal: Cannot force update the current branch.
")
That means your branch is already configured with:
branch.my_local_branch.remote origin
branch.my_local_branch.merge my_remote_branch
Git already has all the necessary information.
In that case:
# if you weren't already on my_local_branch branch:
git checkout my_local_branch
# then:
git pull
is enough.
If you hadn't establish that upstream branch relationship when it came to push your 'my_local_branch
', then a simple git push -u origin my_local_branch:my_remote_branch
would have been enough to push and set the upstream branch.
After that, for the subsequent pulls/pushes, git pull
or git push
would, again, have been enough.
If your data has changed every once,you will notice dont tracing the table.for example some table update id ([key]) using tigger.If you tracing ,you will get same id and get the issue.
Is that your actual code? A javascript object (which is what you've given us) does not have a length property, so in this case exampleArray.length
returns undefined rather than 5.
This stackoverflow explains the length differences between an object and an array, and this stackoverflow shows how to get the 'size' of an object.
Fedora release 25 (Twenty Five)
dnf install python3-tkinter
This worked for me.
If you know that v1
has a value, you can use the Value
property:
v2 = v1.Value;
Using the GetValueOrDefault
method will assign the value if there is one, otherwise the default for the type, or a default value that you specify:
v2 = v1.GetValueOrDefault(); // assigns zero if v1 has no value
v2 = v1.GetValueOrDefault(-1); // assigns -1 if v1 has no value
You can use the HasValue
property to check if v1
has a value:
if (v1.HasValue) {
v2 = v1.Value;
}
There is also language support for the GetValueOrDefault(T)
method:
v2 = v1 ?? -1;
git show
is also a great command.
It's kind of like svn diff
, but you can pass it a commit guid and see that diff.
Since there's already another solution which uses Perl:
If you have Python installed you could also do (from the shell):
python -c "import os;e=set();[[e.add(os.path.splitext(f)[-1]) for f in fn]for _,_,fn in os.walk('/home')];print '\n'.join(e)"
We cannot prevent the status appearing in full screen mode in (4.4+) kitkat or above devices, so try a hack to block the status bar from expanding.
Solution is pretty big, so here's the link of SO:
StackOverflow : Hide status bar in android 4.4+ or kitkat with Fullscreen
Make sure you have jQuery UI base and the color picker widget included on your page (as well as a copy of jQuery 1.3):
<link rel="stylesheet" href="http://dev.jquery.com/view/tags/ui/latest/themes/flora/flora.all.css" type="text/css" media="screen" title="Flora (Default)">
<script type="text/javascript" src="http://dev.jquery.com/view/tags/ui/latest/ui/ui.core.js"></script>
<script type="text/javascript" src="http://dev.jquery.com/view/tags/ui/latest/ui/ui.colorpicker.js"></script>
If you have those included, try posting your source so we can see what's going on.
If RVM was installed with dedicated ubuntu RVM installer https://github.com/rvm/ubuntu_rvm the path to RVM scripts will be different /usr/share/rvm/scripts/rvm
. So to add it to your .bashrc
run the following command:
echo 'source "/usr/share/rvm/scripts/rvm"' >> ~/.bashrc
def valid = pointAddress.findAll { a ->
validPointTypes.any { a.contains(it) }
}
Should do it
sklearn.externals.joblib
has been deprecated since 0.21
and will be removed in v0.23
:
/usr/local/lib/python3.7/site-packages/sklearn/externals/joblib/init.py:15: FutureWarning: sklearn.externals.joblib is deprecated in 0.21 and will be removed in 0.23. Please import this functionality directly from joblib, which can be installed with: pip install joblib. If this warning is raised when loading pickled models, you may need to re-serialize those models with scikit-learn 0.21+.
warnings.warn(msg, category=FutureWarning)
Therefore, you need to install joblib
:
pip install joblib
and finally write the model to disk:
import joblib
from sklearn.datasets import load_digits
from sklearn.linear_model import SGDClassifier
digits = load_digits()
clf = SGDClassifier().fit(digits.data, digits.target)
with open('myClassifier.joblib.pkl', 'wb') as f:
joblib.dump(clf, f, compress=9)
Now in order to read the dumped file all you need to run is:
with open('myClassifier.joblib.pkl', 'rb') as f:
my_clf = joblib.load(f)
Check that the value of the redirect_uri parameter is whitelisted for the client that you are using. You can manage the configuration of the client via the admin console.
The redirect uri should match exactly with one of the whitelisted redirect uri's, or you can use a wildcard at the end of the uri you want to whitelist. See: https://www.keycloak.org/docs/latest/server_admin/#_clients
Note that using wildcards to whitelist redirect uri's is allowed by Keycloak, but is actually a violation of the OpenId Connect specification. See the discussion on this at https://lists.jboss.org/pipermail/keycloak-dev/2018-December/011440.html
There are three states of button
button
button:hover
button:active
Normal:
.button
{
//your css
}
Active
.button:active
{
//your css
}
Hover
.button:hover
{
//your css
}
SNIPPET:
Use :active
to style the active state of button.
button:active{_x000D_
background-color:red;_x000D_
}
_x000D_
<button>Click Me</button>
_x000D_
Could it be that you are passing the data through get, not post?
<form method="get" ..>
..
</form>
You have use to repeat-y
as style="background-repeat:repeat-y;width: 200px;"
instead of style="repeat-y"
.
Try this inside the image tag or you can use the below css for the div
.div_backgrndimg
{
background-repeat: repeat-y;
background-image: url("/image/layout/lotus-dreapta.png");
width:200px;
}
Here is a fully working example based on Adam Gawne-Cain's earlier Posting. His solution is simple and actually works exceptionally well.
I've used the following text in a Grid of multiple Fields:
H__|__WWW__+__XXXX__+__WWW__|__H
this makes it possible to easily verify the x/y alignment of the hinted text.
A couple of observations:
- there are any number of solutions out there, but many only work superficially and/or are buggy
- sun.tools.jconsole.ThreadTab.PromptingTextField is a simple solution, but it only shows the prompting text when the Field doesn't have the focus & it's private, but nothing a little cut-and-paste won't fix.
The following works on JDK 8 and upwards:
import java.awt.*;
import java.util.stream.*;
import javax.swing.*;
/**
* @author DaveTheDane, based on a suggestion from Adam Gawne-Cain
*/
public final class JTextFieldPromptExample extends JFrame {
private static JTextField newPromptedJTextField (final String text, final String prompt) {
final String promptPossiblyNullButNeverWhitespace = prompt == null || prompt.trim().isEmpty() ? null : prompt;
return new JTextField(text) {
@Override
public void paintComponent(final Graphics USE_g2d_INSTEAD) {
final Graphics2D g2d = (Graphics2D) USE_g2d_INSTEAD;
super.paintComponent(g2d);
// System.out.println("Paint.: " + g2d);
if (getText().isEmpty()
&& promptPossiblyNullButNeverWhitespace != null) {
g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
final Insets ins = getInsets();
final FontMetrics fm = g2d.getFontMetrics();
final int cB = getBackground().getRGB();
final int cF = getForeground().getRGB();
final int m = 0xfefefefe;
final int c2 = ((cB & m) >>> 1) + ((cF & m) >>> 1); // "for X in (A, R, G, B) {Xnew = (Xb + Xf) / 2}"
/*
* The hint text color should be halfway between the foreground and background colors so it is always gently visible.
* The variables c0,c1,m,c2 calculate the halfway color's ARGB fields simultaneously without overflowing 8 bits.
* Swing sets the Graphics' font to match the JTextField's font property before calling the "paint" method,
* so the hint font will match the JTextField's font.
* Don't think there are any side effects because Swing discards the Graphics after painting.
* Adam Gawne-Cain, Aug 6 2019 at 15:55
*/
g2d.setColor(new Color(c2, true));
g2d.drawString(promptPossiblyNullButNeverWhitespace, ins.left, getHeight() - fm.getDescent() - ins.bottom);
/*
* y Coordinate based on Descent & Bottom-inset seems to align Text spot-on.
* DaveTheDane, Apr 10 2020
*/
}
}
};
}
private static final GridBagConstraints GBC_LEFT = new GridBagConstraints();
private static final GridBagConstraints GBC_RIGHT = new GridBagConstraints();
/**/ static {
GBC_LEFT .anchor = GridBagConstraints.LINE_START;
GBC_LEFT .fill = GridBagConstraints.HORIZONTAL;
GBC_LEFT .insets = new Insets(8, 8, 0, 0);
GBC_RIGHT.gridwidth = GridBagConstraints.REMAINDER;
GBC_RIGHT.fill = GridBagConstraints.HORIZONTAL;
GBC_RIGHT.insets = new Insets(8, 8, 0, 8);
}
private <C extends Component> C addLeft (final C component) {
this .add (component);
this.gbl.setConstraints(component, GBC_LEFT);
return component;
}
private <C extends Component> C addRight(final C component) {
this .add (component);
this.gbl.setConstraints(component, GBC_RIGHT);
return component;
}
private static final String ALIGN = "H__|__WWW__+__XXXX__+__WWW__|__H";
private final GridBagLayout gbl = new GridBagLayout();
public JTextFieldPromptExample(final String title) {
super(title);
this.setLayout(gbl);
final java.util.List<JTextField> texts = Stream.of(
addLeft (newPromptedJTextField(ALIGN + ' ' + "Top-Left" , ALIGN)),
addRight(newPromptedJTextField(ALIGN + ' ' + "Top-Right" , ALIGN)),
addLeft (newPromptedJTextField(ALIGN + ' ' + "Middle-Left" , ALIGN)),
addRight(newPromptedJTextField( null , ALIGN)),
addLeft (new JTextField("x" )),
addRight(newPromptedJTextField("x", "" )),
addLeft (new JTextField(null )),
addRight(newPromptedJTextField(null, null)),
addLeft (newPromptedJTextField(ALIGN + ' ' + "Bottom-Left" , ALIGN)),
addRight(newPromptedJTextField(ALIGN + ' ' + "Bottom-Right", ALIGN)) ).collect(Collectors.toList());
final JButton button = addRight(new JButton("Get texts"));
/**/ addRight(Box.createVerticalStrut(0)); // 1 last time forces bottom inset
this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
this.setPreferredSize(new Dimension(740, 260));
this.pack();
this.setResizable(false);
this.setVisible(true);
button.addActionListener(e -> {
texts.forEach(text -> System.out.println("Text..: " + text.getText()));
});
}
public static void main(final String[] args) {
SwingUtilities.invokeLater(() -> new JTextFieldPromptExample("JTextField with Prompt"));
}
}
For AFNetworking 3.0 (iOS9 or greter)
NSString *strURL = @"https://exampleWeb.com/webserviceOBJ";
NSDictionary *dictParamiters = @{@"user[height]": height,@"user[weight]": weight};
NSString *aStrParams = [self getFormDataStringWithDictParams:dictParamiters];
NSData *aData = [aStrParams dataUsingEncoding:NSUTF8StringEncoding];
NSMutableURLRequest *aRequest = [[NSMutableURLRequest alloc]initWithURL:[NSURL URLWithString:strURL]];
[aRequest setHTTPMethod:@"POST"];
[aRequest setHTTPBody:aData];
NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
NSURLSession *session = [NSURLSession sessionWithConfiguration:configuration delegate:nil delegateQueue:nil];
[aRequest setHTTPBody:aData];
NSURLSessionDataTask *postDataTask = [session dataTaskWithRequest:aRequest completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
//
if (error ==nil) {
NSString *aStr = [[NSString alloc]initWithData:data encoding:NSUTF8StringEncoding];
NSLog(@"ResponseString:%@",aStr);
NSMutableDictionary *aMutDict = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:nil];
dispatch_async(dispatch_get_main_queue(), ^{
completionBlock(aMutDict);
NSLog(@"responce:%@",aMutDict)
});
}
else
{
dispatch_async(dispatch_get_main_queue(), ^{
NSLog(@"error:%@",error.locali)
});
}
}];
[postDataTask resume];
and Add
-(NSString *)getFormDataStringWithDictParams:(NSDictionary *)aDict
{
NSMutableString *aMutStr = [[NSMutableString alloc]initWithString:@""];
for (NSString *aKey in aDict.allKeys) {
[aMutStr appendFormat:@"%@=%@&",aKey,aDict[aKey]];
}
NSString *aStrParam;
if (aMutStr.length>2) {
aStrParam = [aMutStr substringWithRange:NSMakeRange(0, aMutStr.length-1)];
}
else
aStrParam = @"";
return aStrParam;
}
I have string that displays UTF-8 encoded characters
There is no such thing in .NET. The string class can only store strings in UTF-16 encoding. A UTF-8 encoded string can only exist as a byte[]. Trying to store bytes into a string will not come to a good end; UTF-8 uses byte values that don't have a valid Unicode codepoint. The content will be destroyed when the string is normalized. So it is already too late to recover the string by the time your DecodeFromUtf8() starts running.
Only handle UTF-8 encoded text with byte[]. And use UTF8Encoding.GetString() to convert it.
try
total.Text = DateTime.Now.ToString()
or
Dim theDate As DateTime = System.DateTime.Now
total.Text = theDate.ToString()
You declare Start
as an Integer
, while you are trying to put a DateTime
in it, which is not possible.
def merge_sort(x):
if len(x) < 2:return x
result,mid = [],int(len(x)/2)
y = merge_sort(x[:mid])
z = merge_sort(x[mid:])
while (len(y) > 0) and (len(z) > 0):
if y[0] > z[0]:result.append(z.pop(0))
else:result.append(y.pop(0))
result.extend(y+z)
return result
You can use the ThenBy and ThenByDescending extension methods:
foobarList.OrderBy(x => x.Foo).ThenBy( x => x.Bar)
With the recent release of bootstrap 3, and the glyphicons being merged back to the main Bootstrap repo, Bootstrap CDN is now serving the complete Bootstrap 3.0 css including Glyphicons. The Bootstrap css reference is all you need to include: Glyphicons and its dependencies are on relative paths on the CDN site and are referenced in bootstrap.min.css
.
In html:
<link href="//netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css" rel="stylesheet">
In css:
@import url("//netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css");
Here is a working demo.
Note that you have to use .glyphicon
classes instead of .icon
:
Example:
<span class="glyphicon glyphicon-heart"></span>
Also note that you would still need to include bootstrap.min.js
for usage of Bootstrap JavaScript components, see Bootstrap CDN for url.
If you want to use the Glyphicons separately, you can do that by directly referencing the Glyphicons css on Bootstrap CDN.
In html:
<link href="//netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap-glyphicons.css" rel="stylesheet">
In css:
@import url("//netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap-glyphicons.css");
Since the css
file already includes all the needed Glyphicons dependencies (which are in a relative path on the Bootstrap CDN site), adding the css
file is all there is to do to start using Glyphicons.
Here is a working demo of the Glyphicons without Bootstrap.
You can simply use decimal.ToString()
For two decimals
myDecimal.ToString("0.00");
For four decimals
myDecimal.ToString("0.0000");
This gives dot as decimal separator, and no thousand separator regardless of culture.
For test navegation on Express
:
const request = require('supertest');
const server = require('../bin/www');
describe('navegation', () => {
it('login page', function(done) {
this.timeout(4000);
const timeOut = setTimeout(done, 3500);
request(server)
.get('/login')
.expect(200)
.then(res => {
res.text.should.include('Login');
clearTimeout(timeOut);
done();
})
.catch(err => {
console.log(this.test.fullTitle(), err);
clearTimeout(timeOut);
done(err);
});
});
});
In the example the test time is 4000 (4s).
Note: setTimeout(done, 3500)
is minor for than done
is called within the time of the test but clearTimeout(timeOut)
it avoid than used all these time.
Quickselect works in O(n), this is also used in the partition step of Quicksort.
The return
statement stops a loop only if it's inside the function (i.e. it terminates both the loop and the function). Otherwise, you will get this error:
Uncaught SyntaxError: Illegal return statement(…)
To terminate a loop you should use break
.
Please Try the following codes :
Import Execute
Execute("zbx_control.sh")
**June 2012 **
Google Recommends Eclipse Helios, Eclipse Classic or Eclipse RCP. For details, read the below post.
URL: http://developer.android.com/sdk/eclipse-adt.html
Look under ADT 18.0.0 (April 2012).
Eclipse Helios (Version 3.6.2) or higher is required for ADT 18.0.0.
Look under Installing the ADT Plugin.
If you need to install or update Eclipse, you can download it from http://www.eclipse.org/downloads/. The "Eclipse Classic" version is recommended. Otherwise, a Java or RCP version of Eclipse is recommended.
April 2014 Updated
Eclipse Indigo (Version 3.7.2) or higher is required. I'll suggest you to use Eclipse Kepler.
ADT 22.6.0 (March 2014)
Cross Browser jQuery Solution! Raw available at GitHub
The following plugin will go through your standard test for various versions of IE, Chrome, Firefox, Safari, etc.. and establish your declared methods accordingly. It also deals with issues such as:
Use is as simple as: Scroll Down to 'Run Snippet'
$.winFocus(function(event, isVisible) {
console.log("Combo\t\t", event, isVisible);
});
// OR Pass False boolean, and it will not trigger on load,
// Instead, it will first trigger on first blur of current tab_window
$.winFocus(function(event, isVisible) {
console.log("Combo\t\t", event, isVisible);
}, false);
// OR Establish an object having methods "blur" & "focus", and/or "blurFocus"
// (yes, you can set all 3, tho blurFocus is the only one with an 'isVisible' param)
$.winFocus({
blur: function(event) {
console.log("Blur\t\t", event);
},
focus: function(event) {
console.log("Focus\t\t", event);
}
});
// OR First method becoms a "blur", second method becoms "focus"!
$.winFocus(function(event) {
console.log("Blur\t\t", event);
},
function(event) {
console.log("Focus\t\t", event);
});
/* Begin Plugin */_x000D_
;;(function($){$.winFocus||($.extend({winFocus:function(){var a=!0,b=[];$(document).data("winFocus")||$(document).data("winFocus",$.winFocus.init());for(x in arguments)"object"==typeof arguments[x]?(arguments[x].blur&&$.winFocus.methods.blur.push(arguments[x].blur),arguments[x].focus&&$.winFocus.methods.focus.push(arguments[x].focus),arguments[x].blurFocus&&$.winFocus.methods.blurFocus.push(arguments[x].blurFocus),arguments[x].initRun&&(a=arguments[x].initRun)):"function"==typeof arguments[x]?b.push(arguments[x]):_x000D_
"boolean"==typeof arguments[x]&&(a=arguments[x]);b&&(1==b.length?$.winFocus.methods.blurFocus.push(b[0]):($.winFocus.methods.blur.push(b[0]),$.winFocus.methods.focus.push(b[1])));if(a)$.winFocus.methods.onChange()}}),$.winFocus.init=function(){$.winFocus.props.hidden in document?document.addEventListener("visibilitychange",$.winFocus.methods.onChange):($.winFocus.props.hidden="mozHidden")in document?document.addEventListener("mozvisibilitychange",$.winFocus.methods.onChange):($.winFocus.props.hidden=_x000D_
"webkitHidden")in document?document.addEventListener("webkitvisibilitychange",$.winFocus.methods.onChange):($.winFocus.props.hidden="msHidden")in document?document.addEventListener("msvisibilitychange",$.winFocus.methods.onChange):($.winFocus.props.hidden="onfocusin")in document?document.onfocusin=document.onfocusout=$.winFocus.methods.onChange:window.onpageshow=window.onpagehide=window.onfocus=window.onblur=$.winFocus.methods.onChange;return $.winFocus},$.winFocus.methods={blurFocus:[],blur:[],focus:[],_x000D_
exeCB:function(a){$.winFocus.methods.blurFocus&&$.each($.winFocus.methods.blurFocus,function(b,c){this.apply($.winFocus,[a,!a.hidden])});a.hidden&&$.winFocus.methods.blur&&$.each($.winFocus.methods.blur,function(b,c){this.apply($.winFocus,[a])});!a.hidden&&$.winFocus.methods.focus&&$.each($.winFocus.methods.focus,function(b,c){this.apply($.winFocus,[a])})},onChange:function(a){var b={focus:!1,focusin:!1,pageshow:!1,blur:!0,focusout:!0,pagehide:!0};if(a=a||window.event)a.hidden=a.type in b?b[a.type]:_x000D_
document[$.winFocus.props.hidden],$(window).data("visible",!a.hidden),$.winFocus.methods.exeCB(a);else try{$.winFocus.methods.onChange.call(document,new Event("visibilitychange"))}catch(c){}}},$.winFocus.props={hidden:"hidden"})})(jQuery);_x000D_
/* End Plugin */_x000D_
_x000D_
// Simple example_x000D_
$(function() {_x000D_
$.winFocus(function(event, isVisible) {_x000D_
$('td tbody').empty();_x000D_
$.each(event, function(i) {_x000D_
$('td tbody').append(_x000D_
$('<tr />').append(_x000D_
$('<th />', { text: i }),_x000D_
$('<td />', { text: this.toString() })_x000D_
)_x000D_
)_x000D_
});_x000D_
if (isVisible) _x000D_
$("#isVisible").stop().delay(100).fadeOut('fast', function(e) {_x000D_
$('body').addClass('visible');_x000D_
$(this).stop().text('TRUE').fadeIn('slow');_x000D_
});_x000D_
else {_x000D_
$('body').removeClass('visible');_x000D_
$("#isVisible").text('FALSE');_x000D_
}_x000D_
});_x000D_
})
_x000D_
body { background: #AAF; }_x000D_
table { width: 100%; }_x000D_
table table { border-collapse: collapse; margin: 0 auto; width: auto; }_x000D_
tbody > tr > th { text-align: right; }_x000D_
td { width: 50%; }_x000D_
th, td { padding: .1em .5em; }_x000D_
td th, td td { border: 1px solid; }_x000D_
.visible { background: #FFA; }
_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>_x000D_
<h3>See Console for Event Object Returned</h3>_x000D_
<table>_x000D_
<tr>_x000D_
<th><p>Is Visible?</p></th>_x000D_
<td><p id="isVisible">TRUE</p></td>_x000D_
</tr>_x000D_
<tr>_x000D_
<td colspan="2">_x000D_
<table>_x000D_
<thead>_x000D_
<tr>_x000D_
<th colspan="2">Event Data <span style="font-size: .8em;">{ See Console for More Details }</span></th>_x000D_
</tr>_x000D_
</thead>_x000D_
<tbody></tbody>_x000D_
</table>_x000D_
</td>_x000D_
</tr>_x000D_
</table>
_x000D_
for Mac OS just go to applications and just run these Scripts Install Certificates.command and Update Shell Profile.command, now it will work.
There are some cool answers here (errator esp.), but for something analogous to split in other languages -- which is what I took the original question to mean -- I settled on this:
IN="[email protected];[email protected]"
declare -a a="(${IN/;/ })";
Now ${a[0]}
, ${a[1]}
, etc, are as you would expect. Use ${#a[*]}
for number of terms. Or to iterate, of course:
for i in ${a[*]}; do echo $i; done
IMPORTANT NOTE:
This works in cases where there are no spaces to worry about, which solved my problem, but may not solve yours. Go with the $IFS
solution(s) in that case.
This code should do it:
manifest.json
{
"name": "Alert 'hello world!' on page opening",
"version": "1.0",
"manifest_version": 2,
"content_scripts": [
{
"matches": [
"<all_urls>"
],
"js": ["content.js"]
}
]
}
content.js
alert('Hello world!')
Just add the namespace:
System.Windows.forms
to your web application reference or what ever, and you have the access to your:
MessageBox.Show("Here is my message");
I tried it and it worked.
Good luck.
Wrap all the children inside of another LinearLayout with wrap_content
for both the width and the height as well as the vertical orientation.
To retreive the value of all selected item in à listbox you can cast selected item in DataRowView and then select column where your data is:
foreach(object element in listbox.SelectedItems) {
DataRowView row = (DataRowView)element;
MessageBox.Show(row[0]);
}
Add the type for the script
<script src="https://maps.googleapis.com/maps/api/js" type="text/javascript"></script>
So the important part is the type text/javascript.
If you're looking for relatively simple C++ reflection - I have collected from various sources macro / defines, and commented them out how they works. You can download header files from here:
https://github.com/tapika/TestCppReflect/blob/master/MacroHelpers.h
set of defines, plus functionality on top of it:
https://github.com/tapika/TestCppReflect/blob/master/CppReflect.h https://github.com/tapika/TestCppReflect/blob/master/CppReflect.cpp https://github.com/tapika/TestCppReflect/blob/master/TypeTraits.h
Sample application resides in git repository as well, in here: https://github.com/tapika/TestCppReflect/
I'll partly copy it here with explanation:
#include "CppReflect.h"
using namespace std;
class Person
{
public:
// Repack your code into REFLECTABLE macro, in (<C++ Type>) <Field name>
// form , like this:
REFLECTABLE( Person,
(CString) name,
(int) age,
...
)
};
void main(void)
{
Person p;
p.name = L"Roger";
p.age = 37;
...
// And here you can convert your class contents into xml form:
CStringW xml = ToXML( &p );
CStringW errors;
People ppl2;
// And here you convert from xml back to class:
FromXml( &ppl2, xml, errors );
CStringA xml2 = ToXML( &ppl2 );
printf( xml2 );
}
REFLECTABLE
define uses class name + field name with offsetof
- to identify at which place in memory particular field is located. I have tried to pick up .NET terminology for as far as possible, but C++ and C# are different, so it's not 1 to 1. Whole C++ reflection model resides in TypeInfo
and FieldInfo
classes.
I have used pugi xml parser to fetch demo code into xml and restore it back from xml.
So output produced by demo code looks like this:
<?xml version="1.0" encoding="utf-8"?>
<People groupName="Group1">
<people>
<Person name="Roger" age="37" />
<Person name="Alice" age="27" />
<Person name="Cindy" age="17" />
</people>
</People>
It's also possible to enable any 3-rd party class / structure support via TypeTraits class, and partial template specification - to define your own TypeTraitsT class, in similar manner to CString or int - see example code in
https://github.com/tapika/TestCppReflect/blob/master/TypeTraits.h#L195
This solution is applicable for Windows / Visual studio. It's possible to port it to other OS/compilers, but haven't done that one. (Ask me if you really like solution, I might be able to help you out)
This solution is applicable for one shot serialization of one class with multiple subclasses.
If you however are searching for mechanism to serialize class parts or even to control what functionality reflection calls produce, you could take a look on following solution:
https://github.com/tapika/cppscriptcore/tree/master/SolutionProjectModel
More detailed information can be found from youtube video:
C++ Runtime Type Reflection https://youtu.be/TN8tJijkeFE
I'm trying to explain bit deeper on how c++ reflection will work.
Sample code will look like for example this:
https://github.com/tapika/cppscriptcore/blob/master/SolutionProjectModel/testCppApp.cpp
c.General.IntDir = LR"(obj\$(ProjectName)_$(Configuration)_$(Platform)\)";
c.General.OutDir = LR"(bin\$(Configuration)_$(Platform)\)";
c.General.UseDebugLibraries = true;
c.General.LinkIncremental = true;
c.CCpp.Optimization = optimization_Disabled;
c.Linker.System.SubSystem = subsystem_Console;
c.Linker.Debugging.GenerateDebugInformation = debuginfo_true;
But each step here actually results in function call
Using C++ properties with __declspec(property(get =, put ... )
.
which receives full information on C++ Data Types, C++ property names and class instance pointers, in form of path, and based on that information you can generate xml, json or even serialize that one over internet.
Examples of such virtual callback functions can be found here:
https://github.com/tapika/cppscriptcore/blob/master/SolutionProjectModel/VCConfiguration.cpp
See functions ReflectCopy
, and virtual function ::OnAfterSetProperty
.
But since topic is really advanced - I recommend to check through video first.
If you have some improvement ideas, feel free to contact me.
Does m
really need to be a data.frame()
or will a matrix()
suffice?
m <- matrix(0, ncol = 30, nrow = 2)
You can wrap a data.frame()
around that if you need to:
m <- data.frame(m)
or all in one line: m <- data.frame(matrix(0, ncol = 30, nrow = 2))
Looks like your buttons are not declared correctly (according to the latest jQuery UI documentation anyway).
try the following:
$( ".selector" ).dialog({
buttons: [{
text: "Ok",
click: function() {
$( this ).dialog( "close" );
}
}]
});
Have you tried (from a command line)
java -jar jbpm-installer-3.2.7.jar
or double clicking it with the mouse ?
Found this and this by googling.
Hope it helps
The agg
function will do this for you. Pass the columns and function as a dict with column, output:
df.groupby(['Country', 'Item_Code']).agg({'Y1961': np.sum, 'Y1962': [np.sum, np.mean]}) # Added example for two output columns from a single input column
This will display only the group by columns, and the specified aggregate columns. In this example I included two agg functions applied to 'Y1962'.
To get exactly what you hoped to see, included the other columns in the group by, and apply sums to the Y variables in the frame:
df.groupby(['Code', 'Country', 'Item_Code', 'Item', 'Ele_Code', 'Unit']).agg({'Y1961': np.sum, 'Y1962': np.sum, 'Y1963': np.sum})
I haven't seen this anywhere, either, but my instinct would be that this means that the IF
prevented the whole statement from executing.
Try to run the statement with a database where the IF
passes.
Also check if there are any triggers involved which might change the result.
[EDIT] When the standard says that this function should never return -1
, that doesn't enforce this. Java doesn't have pre and post conditions. A JDBC driver could return a random number and there was no way to stop it.
If it's important to know why this happens, run the statement against different database until you have tried all execution paths (i.e. one where the IF
returns false
and one where it returns true
).
If it's not that important, mark it off as a "clever trick" by a Microsoft engineer and remember how much you liked it when you feel like being clever yourself next time.
Use document.documentElement
.
Same Question answered here: https://stackoverflow.com/a/7289396/2164160
I wrote a function (debug_display
) which can print, arrays, objects, and file info in pretty way.
<?php
function debug_display($var,$show = false) {
if($show) { $dis = 'block'; }else { $dis = 'none'; }
ob_start();
echo '<div style="display:'.$dis.';text-align:left; direction:ltr;"><b>Idea Debug Method : </b>
<pre>';
if(is_bool($var)) {
echo $var === TRUE ? 'Boolean(TRUE)' : 'Boolean(FALSE)';
}else {
if(FALSE == empty($var) && $var !== NULL && $var != '0') {
if(is_array($var)) {
echo "Number of Indexes: " . count($var) . "\n";
print_r($var);
} elseif(is_object($var)) {
print_r($var);
} elseif(@is_file($var)){
$stat = stat($var);
$perm = substr(sprintf('%o',$stat['mode']), -4);
$accesstime = gmdate('Y/m/d H:i:s', $stat['atime']);
$modification = gmdate('Y/m/d H:i:s', $stat['mtime']);
$change = gmdate('Y/m/d H:i:s', $stat['ctime']);
echo "
file path : $var
file size : {$stat['size']} Byte
device number : {$stat['dev']}
permission : {$perm}
last access time was : {$accesstime}
last modified time was : {$modification}
last change time was : {$change}
";
}elseif(is_string($var)) {
print_r(htmlentities(str_replace("\t", ' ', $var)));
} else {
print_r($var);
}
}else {
echo 'Undefined';
}
}
echo '</pre>
</div>';
$output = ob_get_contents();
ob_end_clean();
echo $output;
unset($output);
}
If you want to implement a public class, you must implement it in a file with the same name as that class. A single file can contain one public and optionally some private classes. This is useful if the classes are only used internally by the public class. Additionally the public class can also contain inner classes.
Although it is fine to have one or more private classes in a single source file, I would say that is more readable to use inner and anonymous classes instead. For example one can use an anonymous class to define a Comparator class inside a public class:
public static Comparator MyComparator = new Comparator() {
public int compare(Object obj, Object anotherObj) {
}
};
The Comparator class will normally require a separate file in order to be public. This way it is bundled with the class that uses it.
There is HTML entity ✓ but it doesn't work in some older browsers.
Swift makes it really easy to create and use extensions. I create a sharedCode.swift
file and put enums, extensions, and other fun stuff in it. I created a NSDate
extension to add some typical functionality which is laborious and ugly to type over and over again:
extension NSDate
{
func hour() -> Int
{
//Get Hour
let calendar = NSCalendar.currentCalendar()
let components = calendar.components(.Hour, fromDate: self)
let hour = components.hour
//Return Hour
return hour
}
func minute() -> Int
{
//Get Minute
let calendar = NSCalendar.currentCalendar()
let components = calendar.components(.Minute, fromDate: self)
let minute = components.minute
//Return Minute
return minute
}
func toShortTimeString() -> String
{
//Get Short Time String
let formatter = NSDateFormatter()
formatter.timeStyle = .ShortStyle
let timeString = formatter.stringFromDate(self)
//Return Short Time String
return timeString
}
}
using this extension you can now do something like:
//Get Current Date
let currentDate = NSDate()
//Test Extensions in Log
NSLog("(Current Hour = \(currentDate.hour())) (Current Minute = \(currentDate.minute())) (Current Short Time String = \(currentDate.toShortTimeString()))")
Which for 11:51 AM would write out:
(Current Hour = 11) (Current Minute = 51) (Current Short Time String = 11:51 AM)
A slightly different Vector class.
class Vector( object ):
def __init__(self, *data):
self.data = data
def __repr__(self):
return repr(self.data)
def __add__(self, other):
return tuple( (a+b for a,b in zip(self.data, other.data) ) )
def __sub__(self, other):
return tuple( (a-b for a,b in zip(self.data, other.data) ) )
Vector(1, 2, 3) - Vector(1, 1, 1)
Try changing
$client = new SoapClient('http://ec.europa.eu/taxation_customs/vies/checkVatService.wsdl', ['trace' => true]);
to
$client = new SoapClient('http://ec.europa.eu/taxation_customs/vies/checkVatService.wsdl', ['trace' => true, 'cache_wsdl' => WSDL_CACHE_MEMORY]);
Also (whether that works or not), check to make sure that /tmp
is writeable by your web server and that it isn't full.
The above answer are interesting and very helpful when using Ruby as shell script. For me, I does not use Ruby as my daily language and I prefer to use ruby as flow control only and still use bash to do the tasks.
Some helper function can be used for testing execution result
#!/usr/bin/env ruby
module ShellHelper
def test(command)
`#{command} 2> /dev/null`
$?.success?
end
def execute(command, raise_on_error = true)
result = `#{command}`
raise "execute command failed\n" if (not $?.success?) and raise_on_error
return $?.success?
end
def print_exit(message)
print "#{message}\n"
exit
end
module_function :execute, :print_exit, :test
end
With helper, the ruby script could be bash alike:
#!/usr/bin/env ruby
require './shell_helper'
include ShellHelper
print_exit "config already exists" if test "ls config"
things.each do |thing|
next if not test "ls #{thing}/config"
execute "cp -fr #{thing}/config_template config/#{thing}"
end
Scrolling div on click of button.
Html Code:-
<div id="textBody" style="height:200px; width:600px; overflow:auto;">
<!------Your content---->
</div>
JQuery code for scrolling div:-
$(function() {
$( "#upBtn" ).click(function(){
$('#textBody').scrollTop($('#textBody').scrollTop()-20);
});
$( "#downBtn" ).click(function(){
$('#textBody').scrollTop($('#textBody').scrollTop()+20);;
});
});
If your jar file already has an absolute pathname as shown, it is particularly easy:
cd /where/you/want/it; jar xf /path/to/jarfile.jar
That is, you have the shell executed by Python change directory for you and then run the extraction.
If your jar file does not already have an absolute pathname, then you have to convert the relative name to absolute (by prefixing it with the path of the current directory) so that jar
can find it after the change of directory.
The only issues left to worry about are things like blanks in the path names.
I should have read more on existing questions in stack overflow.
C++ Passing Variable Number of Arguments is a similar question. Mike F has the following explanation:
There's no way of calling (eg) printf without knowing how many arguments you're passing to it, unless you want to get into naughty and non-portable tricks.
The generally used solution is to always provide an alternate form of vararg functions, so printf has vprintf which takes a va_list in place of the .... The ... versions are just wrappers around the va_list versions.
This is exactly what I was looking for. I performed a test implementation like this:
void Error(const char* format, ...)
{
char dest[1024 * 16];
va_list argptr;
va_start(argptr, format);
vsprintf(dest, format, argptr);
va_end(argptr);
printf(dest);
}
Regarding this insanity from Apple.
Here is perhaps the "clearest", simplest, way to do it:
First, you must correctly move the text.
Note this critical QA: https://stackoverflow.com/a/27066764/294884
class TidyTextField: UITextField {
@IBInspectable var leftImage: UIImage? = nil
@IBInspectable var leftPadding: CGFloat = 0
@IBInspectable var gapPadding: CGFloat = 0
private var textPadding: UIEdgeInsets {
let p: CGFloat = leftPadding + gapPadding + (leftView?.frame.width ?? 0)
return UIEdgeInsets(top: 0, left: p, bottom: 0, right: 5)
}
override open func textRect(forBounds bounds: CGRect) -> CGRect {
return bounds.inset(by: textPadding)
}
override open func placeholderRect(forBounds bounds: CGRect) -> CGRect {
return bounds.inset(by: textPadding)
}
override open func editingRect(forBounds bounds: CGRect) -> CGRect {
return bounds.inset(by: textPadding)
}
continuing, we now have to make and move the left image:
override func leftViewRect(forBounds bounds: CGRect) -> CGRect {
var r = super.leftViewRect(forBounds: bounds)
r.origin.x += leftPadding
return r
}
override func layoutSubviews() {
super.layoutSubviews()
setup()
}
private func setup() {
if let image = leftImage {
if leftView != nil { return } // critical!
let im = UIImageView()
im.contentMode = .scaleAspectFit
im.image = image
leftViewMode = UITextField.ViewMode.always
leftView = im
} else {
leftViewMode = UITextField.ViewMode.never
leftView = nil
}
}
}
This seems to be about the clearest, most reliable way to do it.
Distances to the source of iBeacon-formatted advertisement packets are estimated from the signal path attenuation calculated by comparing the measured received signal strength to the claimed transmit power which the transmitter is supposed to encode in the advertising data.
A path loss based scheme like this is only approximate and is subject to variation with things like antenna angles, intervening objects, and presumably a noisy RF environment. In comparison, systems really designed for distance measurement (GPS, Radar, etc) rely on precise measurements of propagation time, in same cases even examining the phase of the signal.
As Jiaru points out, 160 ft is probably beyond the intended range, but that doesn't necessarily mean that a packet will never get through, only that one shouldn't expect it to work at that distance.
On rails 4.2.2, go to application.rb
and use config.time_zone='city'
(e.g.:'London' or 'Bucharest' or 'Amsterdam' and so on).
It should work just fine. It worked for me.
$myVar = $someVar ?? 42;
Is equivalent to :
$myVar = isset($someVar) ? $someVar : 42;
For constants, the behaviour is the same when using a constant that already exists :
define("FOO", "bar");
define("BAR", null);
$MyVar = FOO ?? "42";
$MyVar2 = BAR ?? "42";
echo $MyVar . PHP_EOL; // bar
echo $MyVar2 . PHP_EOL; // 42
However, for constants that don't exist, this is different :
$MyVar3 = IDONTEXIST ?? "42"; // Raises a warning
echo $MyVar3 . PHP_EOL; // IDONTEXIST
Warning: Use of undefined constant IDONTEXIST - assumed 'IDONTEXIST' (this will throw an Error in a future version of PHP)
Php will convert the non-existing constant to a string.
You can use constant("ConstantName")
that returns the value of the constant or null if the constant doesn't exist, but it will still raise a warning. You can prepended the function with the error control operator @
to ignore the warning message :
$myVar = @constant("IDONTEXIST") ?? "42"; // No warning displayed anymore
echo $myVar . PHP_EOL; // 42
Use getRGB(), it helps ( no complicated programs )
Returns an array of integer pixels in the default RGB color model (TYPE_INT_ARGB) and default sRGB color space, from a portion of the image data.
To show a problem is NP complete, you need to:
In other words, given some information C
, you can create a polynomial time algorithm V
that will verify for every possible input X
whether X
is in your domain or not.
Prove that the problem of vertex covers (that is, for some graph G
, does it have a vertex cover set of size k
such that every edge in G
has at least one vertex in the cover set?) is in NP:
our input X
is some graph G
and some number k
(this is from the problem definition)
Take our information C
to be "any possible subset of vertices in graph G
of size k
"
Then we can write an algorithm V
that, given G
, k
and C
, will return whether that set of vertices is a vertex cover for G
or not, in polynomial time.
Then for every graph G
, if there exists some "possible subset of vertices in G
of size k
" which is a vertex cover, then G
is in NP
.
Note that we do not need to find C
in polynomial time. If we could, the problem would be in `P.
Note that algorithm V
should work for every G
, for some C
. For every input there should exist information that could help us verify whether the input is in the problem domain or not. That is, there should not be an input where the information doesn't exist.
This involves getting a known NP-complete problem like SAT, the set of boolean expressions in the form:
(A or B or C) and (D or E or F) and ...
where the expression is satisfiable, that is there exists some setting for these booleans, which makes the expression true.
Then reduce the NP-complete problem to your problem in polynomial time.
That is, given some input X
for SAT
(or whatever NP-complete problem you are using), create some input Y
for your problem, such that X
is in SAT if and only if Y
is in your problem. The function f : X -> Y
must run in polynomial time.
In the example above, the input Y
would be the graph G
and the size of the vertex cover k
.
For a full proof, you'd have to prove both:
that X
is in SAT
=> Y
in your problem
and Y
in your problem => X
in SAT
.
marcog's answer has a link with several other NP-complete problems you could reduce to your problem.
Footnote: In step 2 (Prove it is NP-hard), reducing another NP-hard (not necessarily NP-complete) problem to the current problem will do, since NP-complete problems are a subset of NP-hard problems (that are also in NP).
For "zip" files, you can use import zipfile
and your code will be working simply with these lines:
import zipfile
import pandas as pd
with zipfile.ZipFile("Crime_Incidents_in_2013.zip") as z:
with z.open("Crime_Incidents_in_2013.csv") as f:
train = pd.read_csv(f, header=0, delimiter="\t")
print(train.head()) # print the first 5 rows
And the result will be:
X,Y,CCN,REPORT_DAT,SHIFT,METHOD,OFFENSE,BLOCK,XBLOCK,YBLOCK,WARD,ANC,DISTRICT,PSA,NEIGHBORHOOD_CLUSTER,BLOCK_GROUP,CENSUS_TRACT,VOTING_PRECINCT,XCOORD,YCOORD,LATITUDE,LONGITUDE,BID,START_DATE,END_DATE,OBJECTID
0 -77.054968548763071,38.899775938598317,0925135...
1 -76.967309569035052,38.872119553647011,1003352...
2 -76.996184958456539,38.927921847721443,1101010...
3 -76.943077541353617,38.883686046653935,1104551...
4 -76.939209158039446,38.892278093281632,1125028...
If your click handler is successfully called then this should work:
$('#results').on('click', '.item', function () {
var NestId = $(this).data('id');
var url = "/Artists/Details?NestId=" + NestId;
window.location.href = url;
})
EDIT: In this particular case given that the action method parameter is a string which is nullable, then if NestId == null
, won't cause any exception at all, given that the ModelBinder won't complain about it.
you can use
the character equivalent to 0x63 is 'c' but byte equivalent to it is 99
System.out.println("byte "+(char)0x63);
alias snoot='find . ! -path "*/.svn*" -print0 | xargs -0 egrep '
For me that have Visual Studio 2015 this works:
Search this in the start menu: Developer Command Prompt for VS2015
and run the program in the search result.
You can now execute your command in it, for example: cl /?
Based on Ray Nicholus's answer :
inputElement.onchange = function(event) {
var fileList = inputElement.files;
//TODO do something with fileList.
}
using this will also work :
inputElement.onchange = function(event) {
var fileList = event.target.files;
//TODO do something with fileList.
}
One issue with your ContentLoader is that internally it operates sequentially. A better pattern is to parallelize the work and then sychronize at the end, so we get
public class PageViewModel : IHandle<SomeMessage>
{
...
public async void Handle(SomeMessage message)
{
ShowLoadingAnimation();
// makes UI very laggy, but still not dead
await this.contentLoader.LoadContentAsync();
HideLoadingAnimation();
}
}
public class ContentLoader
{
public async Task LoadContentAsync()
{
var tasks = new List<Task>();
tasks.Add(DoCpuBoundWorkAsync());
tasks.Add(DoIoBoundWorkAsync());
tasks.Add(DoCpuBoundWorkAsync());
tasks.Add(DoSomeOtherWorkAsync());
await Task.WhenAll(tasks).ConfigureAwait(false);
}
}
Obviously, this doesn't work if any of the tasks require data from other earlier tasks, but should give you better overall throughput for most scenarios.
Always specify the minimum required version of cmake
cmake_minimum_required(VERSION 3.9)
You should declare a project. cmake
says it is mandatory and it will define convenient variables PROJECT_NAME
, PROJECT_VERSION
and PROJECT_DESCRIPTION
(this latter variable necessitate cmake 3.9):
project(mylib VERSION 1.0.1 DESCRIPTION "mylib description")
Declare a new library target. Please avoid the use of file(GLOB ...)
. This feature does not provide attended mastery of the compilation process. If you are lazy, copy-paste output of ls -1 sources/*.cpp
:
add_library(mylib SHARED
sources/animation.cpp
sources/buffers.cpp
[...]
)
Set VERSION
property (optional but it is a good practice):
set_target_properties(mylib PROPERTIES VERSION ${PROJECT_VERSION})
You can also set SOVERSION
to a major number of VERSION
. So libmylib.so.1
will be a symlink to libmylib.so.1.0.0
.
set_target_properties(mylib PROPERTIES SOVERSION 1)
Declare public API of your library. This API will be installed for the third-party application. It is a good practice to isolate it in your project tree (like placing it include/
directory). Notice that, private headers should not be installed and I strongly suggest to place them with the source files.
set_target_properties(mylib PROPERTIES PUBLIC_HEADER include/mylib.h)
If you work with subdirectories, it is not very convenient to include relative paths like "../include/mylib.h"
. So, pass a top directory in included directories:
target_include_directories(mylib PRIVATE .)
or
target_include_directories(mylib PRIVATE include)
target_include_directories(mylib PRIVATE src)
Create an install rule for your library. I suggest to use variables CMAKE_INSTALL_*DIR
defined in GNUInstallDirs
:
include(GNUInstallDirs)
And declare files to install:
install(TARGETS mylib
LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
You may also export a pkg-config
file. This file allows a third-party application to easily import your library:
pkg-config
PKG_CHECK_MODULES
pkg_check_modules
Create a template file named mylib.pc.in
(see pc(5) manpage for more information):
prefix=@CMAKE_INSTALL_PREFIX@
exec_prefix=@CMAKE_INSTALL_PREFIX@
libdir=${exec_prefix}/@CMAKE_INSTALL_LIBDIR@
includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@
Name: @PROJECT_NAME@
Description: @PROJECT_DESCRIPTION@
Version: @PROJECT_VERSION@
Requires:
Libs: -L${libdir} -lmylib
Cflags: -I${includedir}
In your CMakeLists.txt
, add a rule to expand @
macros (@ONLY
ask to cmake to not expand variables of the form ${VAR}
):
configure_file(mylib.pc.in mylib.pc @ONLY)
And finally, install generated file:
install(FILES ${CMAKE_BINARY_DIR}/mylib.pc DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/pkgconfig)
You may also use cmake EXPORT
feature. However, this feature is only compatible with cmake
and I find it difficult to use.
Finally the entire CMakeLists.txt
should looks like:
cmake_minimum_required(VERSION 3.9)
project(mylib VERSION 1.0.1 DESCRIPTION "mylib description")
include(GNUInstallDirs)
add_library(mylib SHARED src/mylib.c)
set_target_properties(mylib PROPERTIES
VERSION ${PROJECT_VERSION}
SOVERSION 1
PUBLIC_HEADER api/mylib.h)
configure_file(mylib.pc.in mylib.pc @ONLY)
target_include_directories(mylib PRIVATE .)
install(TARGETS mylib
LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
install(FILES ${CMAKE_BINARY_DIR}/mylib.pc
DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/pkgconfig)
You could try this to dynamically remove an object from an array without looping through it? Where e and t are just random objects.
>>> e = {'b':1, 'w': 2}
>>> t = {'b':1, 'w': 3}
>>> p = [e,t]
>>> p
[{'b': 1, 'w': 2}, {'b': 1, 'w': 3}]
>>>
>>> p.pop(p.index({'b':1, 'w': 3}))
{'b': 1, 'w': 3}
>>> p
[{'b': 1, 'w': 2}]
>>>
I find this little snippet does the job quite nicely.
public static IEnumerable<List<T>> Chunked<T>(this List<T> source, int chunkSize)
{
var offset = 0;
while (offset < source.Count)
{
yield return source.GetRange(offset, Math.Min(source.Count - offset, chunkSize));
offset += chunkSize;
}
}
How about something like below:
if ('index.html' === array[array.length - 1]) {
//do this
} else {
//do that
}
If using Underscore or Lodash, you can use _.last()
, so something like:
if ('index.html' === _.last(array)) {
//do this
} else {
//do that
}
Or you can create your own last function:
const _last = arr => arr[arr.length - 1];
and use it like:
if ('index.html' === _last(array)) {
//do this
} else {
//do that
}
This should work:
/^((?!PART).)*$/
If you only wanted to exclude it from the beginning of the line (I know you don't, but just FYI), you could use this:
/^(?!PART)/
The (?!...)
syntax is a negative lookahead, which I've always found tough to explain. Basically, it means "whatever follows this point must not match the regular expression /PART/
." The site I've linked explains this far better than I can, but I'll try to break this down:
^ #Start matching from the beginning of the string.
(?!PART) #This position must not be followed by the string "PART".
. #Matches any character except line breaks (it will include those in single-line mode).
$ #Match all the way until the end of the string.
The ((?!xxx).)*
idiom is probably hardest to understand. As we saw, (?!PART)
looks at the string ahead and says that whatever comes next can't match the subpattern /PART/
. So what we're doing with ((?!xxx).)*
is going through the string letter by letter and applying the rule to all of them. Each character can be anything, but if you take that character and the next few characters after it, you'd better not get the word PART.
The ^
and $
anchors are there to demand that the rule be applied to the entire string, from beginning to end. Without those anchors, any piece of the string that didn't begin with PART would be a match. Even PART itself would have matches in it, because (for example) the letter A isn't followed by the exact string PART.
Since we do have ^
and $
, if PART were anywhere in the string, one of the characters would match (?=PART).
and the overall match would fail. Hope that's clear enough to be helpful.
for Python 2.7
for x in range(0, 3):
print x,
for Python 3
for x in range(0, 3):
print(x, end=" ")
I don't believe a switch/case is any faster than a series of if/elseif's. They do the same thing, but if/elseif's you can check multiple variables. You cannot use a switch/case on more than one value.
If you attach your code as a text file and your recipient(s) have "show attachments inline" option set (I believe it's set by default), Outlook should not mangle your code but it will be copy/paste-able directly from email.
For large nested hashes this script could be helpful for you. It prints a nested hash in a nice python/like syntax with only indents to make it easy to copy.
module PrettyHash
# Usage: PrettyHash.call(nested_hash)
# Prints the nested hash in the easy to look on format
# Returns the amount of all values in the nested hash
def self.call(hash, level: 0, indent: 2)
unique_values_count = 0
hash.each do |k, v|
(level * indent).times { print ' ' }
print "#{k}:"
if v.is_a?(Hash)
puts
unique_values_count += call(v, level: level + 1, indent: indent)
else
puts " #{v}"
unique_values_count += 1
end
end
unique_values_count
end
end
h = {a: { b: { c: :d }, e: :f }, g: :i }
PrettyHash.call(h)
a:
b:
c: d
e: f
g: i
=> 3
The returned value is the count (3) of all the end-level values of the nested hash.
You need to add the "Maven Dependency" in the Deployment Assembly
Rebuild and deploy again
Note: This is also applicable for non maven project.
You can also use a relative path in your docker-compose.yml
file like this (tested on Windows host, Linux container):
volumes:
- ./test.conf:/fluentd/etc/test.conf
I think you missed a equal sign at:
Cursor c = ourDatabase.query(DATABASE_TABLE, column, KEY_ROWID + "" + l, null, null, null, null);
Change to:
Cursor c = ourDatabase.query(DATABASE_TABLE, column, KEY_ROWID + " = " + l, null, null, null, null);
Here is screenshot of my Pycharm. Required settings is in following path: File -> Settings -> Editor -> Code Style -> General: Right margin (columns)
Based on audiodude's answer, but simplified by using the built-in CSV library
require 'nokogiri'
require 'csv'
doc = Nokogiri::HTML(table_string)
csv = CSV.open("output.csv", 'w')
doc.xpath('//table//tr').each do |row|
tarray = [] #temporary array
row.xpath('td').each do |cell|
tarray << cell.text #Build array of that row of data.
end
csv << tarray #Write that row out to csv file
end
csv.close
I did wonder if there was any way to take the Nokogiri NodeSet (row.xpath('td')
) and write this out as an array to the csv file in one step. But I could only figure out doing it by iterating over each cell and building the temporary array of each cell's content.
TL;DR. You can get around this by expressing your queries as MyModel::query()->find(10);
instead of MyModel::find(10);
.
To the best of my knowledge, starting PhpStorm 2017.2 code inspection fails for methods such as MyModel::where()
, MyModel::find()
, etc (check this thread). This could get quite annoying, when you try let's say to use PhpStorm's Git integration before committing your code, PhpStorm won't stop complaining about these static method call warnings.
One elegant way (IMOO) to get around this is to explicitly call ::query()
wherever it makes sense to. This will let you benefit from a free auto-completion and a nice query formatting.
$myModel = MyModel::find(10); // static call complaint
// another poorly formatted query with code inspection complaints
$myFilteredModels = MyModel::where('is_beautiful', true)
->where('is_not_smart', false)
->get();
$myModel = MyModel::query()->find(10);
// a nicely formatted query with no complaints
$myFilteredModels = MyModel::query()
->where('is_beautiful', true)
->where('is_not_smart', false)
->get();
$("li").click(function(){
alert($(this).attr("class"));
});
The answer by Carles is the correct answer, but few of the methods like getDrawable(), getColor() got deprecated at the time I am writing this answer. So the updated answer would be
Drawable upArrow = ContextCompat.getDrawable(context, R.drawable.abc_ic_ab_back_mtrl_am_alpha);
upArrow.setColorFilter(ContextCompat.getColor(context, R.color.white), PorterDuff.Mode.SRC_ATOP);
getSupportActionBar().setHomeAsUpIndicator(upArrow);
Following some other stackoverflow queries I found that calling ContextCompat.getDrawable() is similar to
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
return resources.getDrawable(id, context.getTheme());
} else {
return resources.getDrawable(id);
}
And ContextCompat.getColor() is similar to
public static final int getColor(Context context, int id) {
final int version = Build.VERSION.SDK_INT;
if (version >= 23) {
return ContextCompatApi23.getColor(context, id);
} else {
return context.getResources().getColor(id);
}
}
list()
is inherently slower than []
, because
there is symbol lookup (no way for python to know in advance if you did not just redefine list to be something else!),
there is function invocation,
then it has to check if there was iterable argument passed (so it can create list with elements from it) ps. none in our case but there is "if" check
In most cases the speed difference won't make any practical difference though.
See this: Spring @PropertySource using YAML
I think the 3rd answer has what you're looking for, i.e have a separate POJO to map your yaml values into:
@ConfigurationProperties(path="classpath:/appprops.yml", name="db")
public class DbProperties {
private String url;
private String username;
private String password;
...
}
Then annotate your test class with this:
@EnableConfigurationProperties(DbProperties.class)
public class PropertiesUsingService {
@Autowired private DbProperties dbProperties;
}
To Start Jenkins through Command Line
Run CMD with admin
You can run following commands
"net start servicename" to start
"net restart servicename" to restart
"net stop servicename" to stop service
for more reference https://www.windows-commandline.com/start-stop-service-command-line/
As @diyism mentioned, "default_socket_timeout, stream_set_timeout, and stream_context_create timeout are all the timeout of every line read/write, not the whole connection timeout." And the top answer by @stewe has failed me.
As an alternative to using file_get_contents
, you can always use curl
with a timeout.
So here's a working code that works for calling links.
$url='http://example.com/';
$ch=curl_init();
$timeout=5;
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
$result=curl_exec($ch);
curl_close($ch);
echo $result;
Also, according to the man page:
apt-cache showpkg <package_name>
can also be used to:
...display information about the packages listed on the command line. Remaining arguments are package names. The available versions and reverse dependencies of each package listed are listed, as well as forward dependencies for each version. Forward (normal) dependencies are those packages upon which the package in question depends; reverse dependencies are those packages that depend upon the package in question. Thus, forward dependencies must be satisfied for a package, but reverse dependencies need not be.
Ex:
apt-cache policy conky
conky:
Installed: (none)
Candidate: 1.10.3-1
Version table:
1.10.3-1 500
500 http://us.archive.ubuntu.com/ubuntu yakkety/universe amd64 Packages
500 http://us.archive.ubuntu.com/ubuntu yakkety/universe i386 Packages
Since you already have sent some data,
System.out.println("going to demo.jsp");
you won't be able to send a redirect.
Creator of the change-case extension here. I've updated the extension to support spanning lines.
To map the upper case command to a keybinding (e.g. CTRL+T+U), click File -> Preferences -> Keyboard shortcuts, and insert the following into the json config:
{
"key": "ctrl+t ctrl+u",
"command": "extension.changeCase.upper",
"when": "editorTextFocus"
}
EDIT:
With the November 2016 (release notes) update of VSCode, there is built-in support for converting to upper case and lower case via the commands editor.action.transformToUppercase
and editor.action.transformToLowercase
. These don't have default keybindings. They also work with multi-line blocks.
The change-case extension is still useful for other text transformations, e.g. camelCase, PascalCase, snake_case, kebab-case, etc.
If you need complex result (embedded) create your own structure:
class templateRequest
{
public String[] registration_ids;
public Data data;
public class Data
{
public String message;
public String tickerText;
public String contentTitle;
public Data(String message, String tickerText, string contentTitle)
{
this.message = message;
this.tickerText = tickerText;
this.contentTitle = contentTitle;
}
};
}
and then you can obtain JSON string with calling
List<String> ids = new List<string>() { "id1", "id2" };
templateRequest request = new templeteRequest();
request.registration_ids = ids.ToArray();
request.data = new templateRequest.Data("Your message", "Your ticker", "Your content");
string json = new JavaScriptSerializer().Serialize(request);
The result will be like this:
json = "{\"registration_ids\":[\"id1\",\"id2\"],\"data\":{\"message\":\"Your message\",\"tickerText\":\"Your ticket\",\"contentTitle\":\"Your content\"}}"
Hope it helps!
You can use a shortcut. Create a .bashrc file in your home directory. In there, you can add the following:
alias sshb="ssh buck@host"
To make the alias available in your terminal, you can either close and open your terminal, or run
source ~/.bashrc
Then you can connect by just typing in:
sshb
Since java-9
there is a standard way of checking if an index belongs to the array - Objects#checkIndex() :
List<Integer> ints = List.of(1,2,3);
System.out.println(Objects.checkIndex(1,ints.size())); // 1
System.out.println(Objects.checkIndex(10,ints.size())); //IndexOutOfBoundsException
dir /s *foo*
searches in current folder and sub folders.
It finds directories as well as files.
where /s means(documentation):
/s Lists every occurrence of the specified file name within the specified directory and all subdirectories.
Since required quite often it might as well be brief:
=1*(A1="")
This will not return 1
if the cell appears empty but contains say a space or a formula of the kind =IF(B1=3,"Yes","")
where B1
does not contain 3
.
=A1=""
will return either TRUE
or FALSE
but those in an equation are treated as 1
and 0
respectively so multiplying TRUE
by 1
returns 1
.
Much the same can be achieved with the double unary --
:
=--(A1="")
where when A1 is empty one minus negates TRUE
into -1 and the other negates that to 1
(just +
in place of --
however does not change TRUE
to 1
).
I faced a similar problem, trying to test if jQuery is already present on a page, and if not force it's load, and then execute a function. I tried with @David Hellsing workaround, but with no chance for my needs. In fact, the onload
instruction was immediately evaluated, and then the $
usage inside this function was not yet possible (yes, the huggly "$ is not a function." ^^).
So, I referred to this article : https://developer.mozilla.org/fr/docs/Web/Events/load and attached a event listener to my script object.
var script = document.createElement('script');
script.type = "text/javascript";
script.addEventListener("load", function(event) {
console.log("script loaded :)");
onjqloaded();
});
script.src = "https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js";
document.getElementsByTagName('head')[0].appendChild(script);
For my needs, it works fine now. Hope this can help others :)
A few line of java code.
public static void main(String args[]) throws Exception{
String str="test string";
MessageDigest messageDigest=MessageDigest.getInstance("MD5");
messageDigest.update(str.getBytes(),0,str.length());
System.out.println("MD5: "+new BigInteger(1,messageDigest.digest()).toString(16));
}
To get a faster result, the function that obtains the size could be found in resultSize
:
Size original = new Size(640, 480);
int maxSize = 100;
float percent = (new List<float> { (float)maxSize / (float)original.Width , (float)maxSize / (float)original.Height }).Min();
Size resultSize = new Size((int)Math.Floor(original.Width * percent), (int)Math.Floor(original.Height * percent));
Uses Linq
to minimize variable and recalculations, as well as unnecesary if/else
statements
I might be late to the party but I was trying to implement dynamic refs to my project the proper way and all the answer I have found until know aren't quiet satisfying to my liking, so I came up with a solution that I think is simple and uses the native and recommended way of react to create the ref.
sometimes you find that the way documentation is wrote assumes that you have a known amount of views and in most cases this number is unknown so you need a way to solve the problem in this case, create dynamic refs to the unknown number of views you need to show in the class
so the most simple solution i could think of and worked flawlessly was to do as follows
class YourClass extends component {
state={
foo:"bar",
dynamicViews:[],
myData:[] //get some data from the web
}
inputRef = React.createRef()
componentDidMount(){
this.createViews()
}
createViews = ()=>{
const trs=[]
for (let i = 1; i < this.state.myData.lenght; i++) {
let ref =`myrefRow ${i}`
this[ref]= React.createRef()
const row = (
<tr ref={this[ref]}>
<td>
`myRow ${i}`
</td>
</tr>
)
trs.push(row)
}
this.setState({dynamicViews:trs})
}
clickHandler = ()=>{
//const scrollToView = this.inputRef.current.value
//That to select the value of the inputbox bt for demostrate the //example
value=`myrefRow ${30}`
this[value].current.scrollIntoView({ behavior: "smooth", block: "start" });
}
render(){
return(
<div style={{display:"flex", flexDirection:"column"}}>
<Button onClick={this.clickHandler}> Search</Button>
<input ref={this.inputRef}/>
<table>
<tbody>
{this.state.dynamicViews}
<tbody>
<table>
</div>
)
}
}
export default YourClass
that way the scroll will go to whatever row you are looking for..
cheers and hope it helps others
If you are looking for delete cache of your own application then simply delete your cache directory and its all done !
public static void deleteCache(Context context) {
try {
File dir = context.getCacheDir();
deleteDir(dir);
} catch (Exception e) { e.printStackTrace();}
}
public static boolean deleteDir(File dir) {
if (dir != null && dir.isDirectory()) {
String[] children = dir.list();
for (int i = 0; i < children.length; i++) {
boolean success = deleteDir(new File(dir, children[i]));
if (!success) {
return false;
}
}
return dir.delete();
} else if(dir!= null && dir.isFile()) {
return dir.delete();
} else {
return false;
}
}
For simplicity, you can use a Runnable:
private void runCallback(Runnable callback)
{
// Run callback
callback.run();
}
Usage:
runCallback(new Runnable()
{
@Override
public void run()
{
// Running callback
}
});
I would just loop through your JRadioButtons
and call isSelected()
. If you really want to go from the ButtonGroup
you can only get to the models. You could match the models to the buttons, but then if you have access to the buttons, why not use them directly?
Well, the basic premise here is: no, it is not secure yet.
Basically, you can't run crypto in JavaScript: JavaScript Crypto Considered Harmful.
The problem is that you can't reliably get the crypto code into the browser, and even if you could, JS isn't designed to let you run it securely. So until browsers have a cryptographic container (which Encrypted Media Extensions provide, but are being rallied against for their DRM purposes), it will not be possible to do securely.
As far as a "Better way", there isn't one right now. Your only alternative is to store the data in plain text, and hope for the best. Or don't store the information at all. Either way.
Either that, or if you need that sort of security, and you need local storage, create a custom application...
The function for symfony 2.1 and newer, without any deprecated function:
/**
* @param \Symfony\Component\Form\Form $form
*
* @return array
*/
private function getErrorMessages(\Symfony\Component\Form\Form $form)
{
$errors = array();
if ($form->count() > 0) {
foreach ($form->all() as $child) {
/**
* @var \Symfony\Component\Form\Form $child
*/
if (!$child->isValid()) {
$errors[$child->getName()] = $this->getErrorMessages($child);
}
}
} else {
/**
* @var \Symfony\Component\Form\FormError $error
*/
foreach ($form->getErrors() as $key => $error) {
$errors[] = $error->getMessage();
}
}
return $errors;
}
Robert Love's book LINUX System Programming 2nd Edition, specifically addresses your question at the beginning of Chapter 11, pg 363:
The important aspect of a monotonic time source is NOT the current value, but the guarantee that the time source is strictly linearly increasing, and thus useful for calculating the difference in time between two samplings
That said, I believe he is assuming the processes are running on the same instance of an OS, so you might want to have a periodic calibration running to be able to estimate drift.
Try this function, which also displays variable names for the correlation matrix:
def plot_corr(df,size=10):
'''Function plots a graphical correlation matrix for each pair of columns in the dataframe.
Input:
df: pandas DataFrame
size: vertical and horizontal size of the plot'''
corr = df.corr()
fig, ax = plt.subplots(figsize=(size, size))
ax.matshow(corr)
plt.xticks(range(len(corr.columns)), corr.columns);
plt.yticks(range(len(corr.columns)), corr.columns);
Just create a new connection (hit the green plus sign) and enter the schema name and password of the new default schema your DBA suggested. You can switch between your old schema and the new schema with the pull down menu at the top right end of your window.
In DJango 3.0 the default value of a BooleanField in model.py is set like this:
class model_name(models.Model):
example_name = models.BooleanField(default=False)
What worked for me was going to the article someone else had already mentioned, but keying on this piece:
application.config.backup is not created by automatic backup. The backup files are in %systemdrive%\inetpub\history directory. Automatic backup is also a Vista SP1 and above feature. More information can be found in this blog post, http://blogs.iis.net/bills/archive/2008/03/24/how-to-backup-restore-iis7-configuration.aspx
I was able to find backups of my settings from when I had first installed IIS, and just copy and replace the files in the inetsrv\config directory.
Here is a post which introduces different types of keystore in Java and the differences among different types of keystore. http://www.pixelstech.net/article/1408345768-Different-types-of-keystore-in-Java----Overview
Below are the descriptions of different keystores from the post:
JKS, Java Key Store. You can find this file at sun.security.provider.JavaKeyStore. This keystore is Java specific, it usually has an extension of jks. This type of keystore can contain private keys and certificates, but it cannot be used to store secret keys. Since it's a Java specific keystore, so it cannot be used in other programming languages.
JCEKS, JCE key store. You can find this file at com.sun.crypto.provider.JceKeyStore. This keystore has an extension of jceks. The entries which can be put in the JCEKS keystore are private keys, secret keys and certificates.
PKCS12, this is a standard keystore type which can be used in Java and other languages. You can find this keystore implementation at sun.security.pkcs12.PKCS12KeyStore. It usually has an extension of p12 or pfx. You can store private keys, secret keys and certificates on this type.
PKCS11, this is a hardware keystore type. It servers an interface for the Java library to connect with hardware keystore devices such as Luna, nCipher. You can find this implementation at sun.security.pkcs11.P11KeyStore. When you load the keystore, you no need to create a specific provider with specific configuration. This keystore can store private keys, secret keys and cetrificates. When loading the keystore, the entries will be retrieved from the keystore and then converted into software entries.
This Problem is because of Path so you need to build the path using following Steps
Goto project ----->Right Click on Project Name ---->properties ---->click on Than Java Build Path option than ---> click Android 4.2.2---->Ok
For the record and Google search users, If you are a .NET Core developer, you should set the content-types manually, because their default value is null or empty:
var provider = new FileExtensionContentTypeProvider();
app.UseStaticFiles(new StaticFileOptions
{
ContentTypeProvider = provider
});
As @louis-cad mentioned "Kotlin source -> Java's byte code -> Java source" is the only solution so far.
But I would like to mention the way, which I prefer: using Jadx decompiler for Android.
It allows to see the generates code for closures and, as for me, resulting code is "cleaner" then one from IntelliJ IDEA decompiler.
Normally when I need to see Java source code of any Kotlin class I do:
./gradlew assembleDebug
jadx-gui ./app/build/outputs/apk/debug/app-debug.apk
In this GUI basic IDE functionality works: class search, click to go declaration. etc.
Also all the source code could be saved and then viewed using other tools like IntelliJ IDEA.
If you are setting the contents of IFrame using javascript document.write()
then you must close the document by newWin.document.close();
otherwise the following code will not work and print will print the contents of whole page instead of only the IFrame contents.
var frm = document.getElementById(id).contentWindow;
frm.focus();// focus on contentWindow is needed on some ie versions
frm.print();
1 byte may hold 1 character. For Example: Refer Ascii values for each character & convert into binary. This is how it works.
value 255 is stored as (11111111) base 2. Visit this link for knowing more about binary conversion. http://acc6.its.brooklyn.cuny.edu/~gurwitz/core5/nav2tool.html
Size of Tiny Int = 1 Byte ( -128 to 127)
Int = 4 Bytes (-2147483648 to 2147483647)
The link provided by Mark no longer works, but you can go to:
Notpad++ 6.6.9
I find it very annoying though, since a big autocomplete block is always coming up and I would just like to see autocomplete when I press tab or a key combination. I am fairly new to Notepad++ though. If you know of such a key combination, please feel free to reply. I found this question via Google, so we can always help others.
I think what you want to do is
<link rel="stylesheet" type="text/css" href="font/font-face/my-font-face.css">
_x000D_
I have just made bypass this error by just changing the values of the "length" in the original database to the total of around "1000" by changing its structure, and then exporting the same, to the server. :)
You want to join on condition 1 AND condition 2, so simply use the AND keyword as below
ON a.userid = b.sourceid AND a.listid = b.destinationid;
yes I often need to have 3 or more JVM's installed. For example, I've noticed that sometimes the JRE is slightly different to the JDK version of the JRE.
My go to solution on Windows for a bit of 'packaging' is something like this:
@echo off
setlocal
@rem _________________________
@rem
@set JAVA_HOME=b:\lang\java\jdk\v1.6\u45\x64\jre
@rem
@set JAVA_EXE=%JAVA_HOME%\bin\java
@set VER=test
@set WRK=%~d0%~p0%VER%
@rem
@pushd %WRK%
cd
@echo.
@echo %JAVA_EXE% -jar %WRK%\openmrs-standalone.jar
%JAVA_EXE% -jar %WRK%\openmrs-standalone.jar
@rem
@rem _________________________
popd
endlocal
@exit /b
I think it is straightforward. The main thing is the setlocal and endlocal give your app a "personal environment" for what ever it does -- even if there's other programs to run.
I think you want to test
your RegExp in TypeScript, so you have to do like this:
var trigger = "2",
regexp = new RegExp('^[1-9]\d{0,2}$'),
test = regexp.test(trigger);
alert(test + ""); // will display true
You should read MDN Reference - RegExp, the RegExp
object accepts two parameters pattern
and flags
which is nullable(can be omitted/undefined). To test your regex you have to use the .test()
method, not passing the string you want to test inside the declaration of your RegExp!
Why test + ""
?
Because alert()
in TS accepts a string as argument, it is better to write it this way. You can try the full code here.
Run the code either in onload event, either just before you close body
tag.
You try to find an element wich is not there at the moment you do it.
New in Django 1.7 is a app registry that stores configuration and provides introspection. This machinery let's you change several app attributes.
The main point I want to make is that renaming an app isn't always necessary: With app configuration it is possible to resolve conflicting apps. But also the way to go if your app needs friendly naming.
As an example I want to name my polls app 'Feedback from users'. It goes like this:
Create a apps.py
file in the polls
directory:
from django.apps import AppConfig
class PollsConfig(AppConfig):
name = 'polls'
verbose_name = "Feedback from users"
Add the default app config to your polls/__init__.py
:
default_app_config = 'polls.apps.PollsConfig'
For more app configuration: https://docs.djangoproject.com/en/1.7/ref/applications/
Your variable size
is declared as: float size;
You can't use a floating point variable as the size of an array - it needs to be an integer value.
You could cast it to convert to an integer:
float *temp = new float[(int)size];
Your other problem is likely because you're writing outside of the bounds of the array:
float *temp = new float[size];
//Getting input from the user
for (int x = 1; x <= size; x++){
cout << "Enter temperature " << x << ": ";
// cin >> temp[x];
// This should be:
cin >> temp[x - 1];
}
Arrays are zero based in C++, so this is going to write beyond the end and never write the first element in your original code.
Note: This answer is sort of outdated (from 2008). Please use the solution below with care!!
Here is a page that details the problem and a solution (search the page for the text Wrapping sys.stdout into an instance):
Here's a code excerpt from that page:
$ python -c 'import sys, codecs, locale; print sys.stdout.encoding; \
sys.stdout = codecs.getwriter(locale.getpreferredencoding())(sys.stdout); \
line = u"\u0411\n"; print type(line), len(line); \
sys.stdout.write(line); print line'
UTF-8
<type 'unicode'> 2
?
?
$ python -c 'import sys, codecs, locale; print sys.stdout.encoding; \
sys.stdout = codecs.getwriter(locale.getpreferredencoding())(sys.stdout); \
line = u"\u0411\n"; print type(line), len(line); \
sys.stdout.write(line); print line' | cat
None
<type 'unicode'> 2
?
?
There's some more information on that page, well worth a read.
SELECT COUNT(*), table1.category_id, table2.category_name
FROM table1
INNER JOIN table2 ON table1.category_id=table2.category_id
WHERE table1.colour <> 'red'
GROUP BY table1.category_id, table2.category_name
Apart from the impossibility to get file system access in JS, I would not put any trust at all in a client-generated checksum. So generating the checksum on the server is mandatory in any case. – Tomalak Apr 20 '09 at 14:05
Which is useless in most cases. You want the MD5 computed at client side, so that you can compare it with the code recomputed at server side and conclude the upload went wrong if they differ. I have needed to do that in applications working with large files of scientific data, where receiving uncorrupted files were key. My cases was simple, cause users had the MD5 already computed from their data analysis tools, so I just needed to ask it to them with a text field.
Named exports:
Let's say you create a file called utils.js
, with utility functions that you want to make available for other modules (e.g. a React component). Then you would make each function a named export:
export function add(x, y) {
return x + y
}
export function mutiply(x, y) {
return x * y
}
Assuming that utils.js is located in the same directory as your React component, you can use its exports like this:
import { add, multiply } from './utils.js';
...
add(2, 3) // Can be called wherever in your component, and would return 5.
Or if you prefer, place the entire module's contents under a common namespace:
import * as utils from './utils.js';
...
utils.multiply(2,3)
Default exports:
If you on the other hand have a module that only does one thing (could be a React class, a normal function, a constant, or anything else) and want to make that thing available to others, you can use a default export. Let's say we have a file log.js
, with only one function that logs out whatever argument it's called with:
export default function log(message) {
console.log(message);
}
This can now be used like this:
import log from './log.js';
...
log('test') // Would print 'test' in the console.
You don't have to call it log
when you import it, you could actually call it whatever you want:
import logToConsole from './log.js';
...
logToConsole('test') // Would also print 'test' in the console.
Combined:
A module can have both a default export (max 1), and named exports (imported either one by one, or using *
with an alias). React actually has this, consider:
import React, { Component, PropTypes } from 'react';
This is correct
var array_of_functions = {
"all": function(flag) {
console.log(1+flag);
},
"cic": function(flag) {
console.log(13+flag);
}
};
array_of_functions.all(27);
array_of_functions.cic(7);
System.Net.WebException: The remote server returned an error: (411) Length Required.
This is a pretty common issue that comes up when trying to make call a REST based API method through POST. Luckily, there is a simple fix for this one.
This is the code I was using to call the Windows Azure Management API. This particular API call requires the request method to be set as POST, however there is no information that needs to be sent to the server.
var request = (HttpWebRequest) HttpWebRequest.Create(requestUri);
request.Headers.Add("x-ms-version", "2012-08-01"); request.Method =
"POST"; request.ContentType = "application/xml";
To fix this error, add an explicit content length to your request before making the API call.
request.ContentLength = 0;
Don't know how you want to format it, but you can do:
print("Created at %s:%s" % (t1.hour, t1.minute))
for example.
Found this useful - ensures the compiled Assembly references everything you currently have referenced, since there's a good chance you wanted the C# you're compiling to use some classes etc in the code that's emitting this:
(string code
is the dynamic C# being compiled)
var refs = AppDomain.CurrentDomain.GetAssemblies();
var refFiles = refs.Where(a => !a.IsDynamic).Select(a => a.Location).ToArray();
var cSharp = (new Microsoft.CSharp.CSharpCodeProvider()).CreateCompiler();
var compileParams = new System.CodeDom.Compiler.CompilerParameters(refFiles);
compileParams.GenerateInMemory = true;
compileParams.GenerateExecutable = false;
var compilerResult = cSharp.CompileAssemblyFromSource(compileParams, code);
var asm = compilerResult.CompiledAssembly;
In my case I was emitting a class, whose name was stored in a string, className
, which had a single public static method named Get()
, that returned with type StoryDataIds
. Here's what calling that method looks like:
var tempType = asm.GetType(className);
var ids = (StoryDataIds)tempType.GetMethod("Get").Invoke(null, null);
Warning: Compilation can be surprisingly, extremely slow. A small, relatively simple 10-line chunk of code compiles at normal priority in 2-10 seconds on our relatively fast server. You should never tie calls to CompileAssemblyFromSource()
to anything with normal performance expectations, like a web request. Instead, proactively compile code you need on a low-priority thread and have a way of dealing with code that requires that code to be ready, until it's had a chance to finish compiling. For example you could use it in a batch job process.
The following answer could be helpful for the first part of your question: