Or for what seems like rampant overkill, but is actually simplistic ... Pretty much covers all of your cases, and no empty string or unary concerns.
In the case the first arg is '-v', then do your conditional ps -ef
, else in all other cases throw the usage.
#!/bin/sh
case $1 in
'-v') if [ "$1" = -v ]; then
echo "`ps -ef | grep -v '\['`"
else
echo "`ps -ef | grep '\[' | grep root`"
fi;;
*) echo "usage: $0 [-v]"
exit 1;; #It is good practice to throw a code, hence allowing $? check
esac
If one cares not where the '-v' arg is, then simply drop the case inside a loop. The would allow walking all the args and finding '-v' anywhere (provided it exists). This means command line argument order is not important. Be forewarned, as presented, the variable arg_match is set, thus it is merely a flag. It allows for multiple occurrences of the '-v' arg. One could ignore all other occurrences of '-v' easy enough.
#!/bin/sh
usage ()
{
echo "usage: $0 [-v]"
exit 1
}
unset arg_match
for arg in $*
do
case $arg in
'-v') if [ "$arg" = -v ]; then
echo "`ps -ef | grep -v '\['`"
else
echo "`ps -ef | grep '\[' | grep root`"
fi
arg_match=1;; # this is set, but could increment.
*) ;;
esac
done
if [ ! $arg_match ]
then
usage
fi
But, allow multiple occurrences of an argument is convenient to use in situations such as:
$ adduser -u:sam -s -f -u:bob -trace -verbose
We care not about the order of the arguments, and even allow multiple -u arguments. Yes, it is a simple matter to also allow:
$ adduser -u sam -s -f -u bob -trace -verbose
If you want to consider null values equality too, try the following
select column1, column2,
case
when column1 is NULL and column2 is NULL then 'true'
when column1=column2 then 'true'
else 'false'
end
from table;
No. That is not possible. You should use an array instead:
name[i] = i;
In this case, your name+i
is name[i]
.
LinearLayout.LayoutParams param = new LinearLayout.LayoutParams(
/*width*/ ViewGroup.LayoutParams.MATCH_PARENT,
/*height*/ ViewGroup.LayoutParams.MATCH_PARENT,
/*weight*/ 1.0f
);
YOUR_VIEW.setLayoutParams(param);
Please find code for respected region.
Controller
ViewBag.hdnFlag= Session["hdnFlag"];
View
<input type="hidden" value="@ViewBag.hdnFlag" id="hdnFlag" />
JavaScript
var hdnFlagVal = $("#hdnFlag").val();
A. Static Method:
Class.method = function () { /* code */ }
method()
here is a function property added to an another function (here Class).Class.method();
new Class()
) for accessing the method(). So you could call it as a static method.B. Prototype Method (Shared across all the instances):
Class.prototype.method = function () { /* code using this.values */ }
method()
here is a function property added to an another function protype (here Class.prototype).new Class()
).Class
C. Class Method (Each instance has its own copy):
function Class () {
this.method = function () { /* do something with the private members */};
}
method()
here is a method defined inside an another function (here Class).Class.method();
new Class()
) for the method() access.new Class()
).Example:
function Class() {
var str = "Constructor method"; // private variable
this.method = function () { console.log(str); };
}
Class.prototype.method = function() { console.log("Prototype method"); };
Class.method = function() { console.log("Static method"); };
new Class().method(); // Constructor method
// Bcos Constructor method() has more priority over the Prototype method()
// Bcos of the existence of the Constructor method(), the Prototype method
// will not be looked up. But you call it by explicity, if you want.
// Using instance
new Class().constructor.prototype.method(); // Prototype method
// Using class name
Class.prototype.method(); // Prototype method
// Access the static method by class name
Class.method(); // Static method
You should look this example to understand Lazy Loading architecture
private readonly Lazy<List<int>> list = new Lazy<List<int>>(() =>
{
List<int> configList = new List<int>(Thread.CurrentThread.ManagedThreadId);
return configList;
});
public void Execute()
{
list.Value.Add(0);
if (list.IsValueCreated)
{
list.Value.Add(1);
list.Value.Add(2);
foreach (var item in list.Value)
{
Console.WriteLine(item);
}
}
else
{
Console.WriteLine("Value not created");
}
}
--> output --> 0 1 2
but if this code dont write "list.Value.Add(0);"
output --> Value not created
Be careful that this will create an "alternate reality" for people who have already fetch/pulled/cloned from the remote repository. But in fact, it's quite simple:
git reset HEAD^ # remove commit locally
git push origin +HEAD # force-push the new HEAD commit
If you want to still have it in your local repository and only remove it from the remote, then you can use:
git push origin +HEAD^:<name of your branch, most likely 'master'>
Don't forget that you need to call it on the object that has the nav controller. For instance, if you have nav controller pushing on a tab bar controller with a RootViewController, calling self.navigationItem.hidesBackButton = YES
on the RootViewController will do nothing. You would actually have to call self.tabBarController.navigationItem.hidesBackButton = YES
I must have arrived at the party late, none of the solutions here seemed helpful to me - too messy and felt like too much of a workaround.
What I ended up doing is using Angular 4.0.0-beta.6
's ngComponentOutlet.
This gave me the shortest, simplest solution all written in the dynamic component's file.
import {
Component, OnInit, Input, NgModule, NgModuleFactory, Compiler
} from '@angular/core';
@Component({
selector: 'my-component',
template: `<ng-container *ngComponentOutlet="dynamicComponent;
ngModuleFactory: dynamicModule;"></ng-container>`,
styleUrls: ['my.component.css']
})
export class MyComponent implements OnInit {
dynamicComponent;
dynamicModule: NgModuleFactory<any>;
@Input()
text: string;
constructor(private compiler: Compiler) {
}
ngOnInit() {
this.dynamicComponent = this.createNewComponent(this.text);
this.dynamicModule = this.compiler.compileModuleSync(this.createComponentModule(this.dynamicComponent));
}
protected createComponentModule (componentType: any) {
@NgModule({
imports: [],
declarations: [
componentType
],
entryComponents: [componentType]
})
class RuntimeComponentModule
{
}
// a module for just this Type
return RuntimeComponentModule;
}
protected createNewComponent (text:string) {
let template = `dynamically created template with text: ${text}`;
@Component({
selector: 'dynamic-component',
template: template
})
class DynamicComponent implements OnInit{
text: any;
ngOnInit() {
this.text = text;
}
}
return DynamicComponent;
}
}
my-component
- the component in which a dynamic component is renderingDynamicComponent
- the component to be dynamically built and it is rendering inside my-componentDon't forget to upgrade all the angular libraries to ^Angular 4.0.0
Hope this helps, good luck!
UPDATE
Also works for angular 5.
For cases with a low number of lists you can simply add the lists together or use in-place unpacking (available in Python-3.5+):
In [1]: listone = [1, 2, 3]
...: listtwo = [4, 5, 6]
In [2]: listone + listtwo
Out[2]: [1, 2, 3, 4, 5, 6]
In [3]: [*listone, *listtwo]
Out[3]: [1, 2, 3, 4, 5, 6]
As a more general way for cases with more number of lists, as a pythonic approach, you can use chain.from_iterable()
1 function from itertoold
module. Also, based on this answer this function is the best; or at least a very food way for flatting a nested list as well.
>>> l=[[1, 2, 3], [4, 5, 6], [7, 8, 9]]
>>> import itertools
>>> list(itertools.chain.from_iterable(l))
[1, 2, 3, 4, 5, 6, 7, 8, 9]
append a text node as follows
var td1 = document.getElementById('td1');
var text = document.createTextNode("some text");
td1.appendChild(text);
... Or instead of treating the commas as garbage to be filtered out, we could treat the overall string as a localized formatting of the float, and use the localization services:
from locale import atof, setlocale, LC_NUMERIC
setlocale(LC_NUMERIC, '') # set to your default locale; for me this is
# 'English_Canada.1252'. Or you could explicitly specify a locale in which floats
# are formatted the way that you describe, if that's not how your locale works :)
atof('123,456') # 123456.0
# To demonstrate, let's explicitly try a locale in which the comma is a
# decimal point:
setlocale(LC_NUMERIC, 'French_Canada.1252')
atof('123,456') # 123.456
You should define source code encoding, add this to the top of your script:
# -*- coding: utf-8 -*-
The reason why it works differently in console and in the IDE is, likely, because of different default encodings set. You can check it by running:
import sys
print sys.getdefaultencoding()
Also see:
Python 3.3.1 [MSC v.1600 32 bit (Intel)] on win32 14.May.2013
This worked for me, by following the code above
from tkinter import *
from PIL import ImageTk, Image
import os
root = Tk()
img = ImageTk.PhotoImage(Image.open("True1.gif"))
panel = Label(root, image = img)
panel.pack(side = "bottom", fill = "both", expand = "yes")
root.mainloop()
This could be solved without VBA by the following technique.
In this example I am counting all the threes (3) in the range A:A
of the sheets Page M904
, Page M905
and Page M906
.
List all the sheet names in a single continuous range like in the following example. Here listed in the range D3:D5
.
Then by having the lookup value in cell B2
, the result can be found in cell B4
by using the following formula:
=SUMPRODUCT(COUNTIF(INDIRECT("'"&D3:D5&"'!A:A"), B2))
This creates backup files. E.g. sed -i -e 's/hello/hello world/' testfile
for me, creates a backup file, testfile-e, in the same dir.
You can do it this simple way :
A1 = Mahi
A2 = NULL(blank)
Select A2 Right click on cell --> Format cells --> change to TEXT
Then put the date in A2 (A2 =31/07/1990)
Then concatenate it will work. No need of any formulae.
=CONCATENATE(A1,A2)
mahi31/07/1990
(This works on the empty cells ie.,Before entering the DATE value to cell you need to make it as TEXT).
You should use static String.Compare
function like following
x => String.Compare (x.Username, (string)drUser["Username"],
StringComparison.OrdinalIgnoreCase) == 0
EditorFor
works with metadata, so if you want to add html attributes you could always do it. Another option is to simply write a custom template and use TextBoxFor
:
<%= Html.TextBoxFor(model => model.Control.PeriodType,
new { disabled = "disabled", @readonly = "readonly" }) %>
I deal with this issue for some hours. Let's consider the request is Reactjs (javascript) and backend (API) is Asp .Net Core.
in the request, you must set in header Content-Type:
Axios({
method: 'post',
headers: { 'Content-Type': 'application/json'},
url: 'https://localhost:44346/Order/Order/GiveOrder',
data: order,
}).then(function (response) {
console.log(response);
});
and in backend (Asp .net core API) u must have some setting:
1. in Startup --> ConfigureServices:
#region Allow-Orgin
services.AddCors(c =>
{
c.AddPolicy("AllowOrigin", options => options.AllowAnyOrigin());
});
#endregion
2. in Startup --> Configure before app.UseMvc() :
app.UseCors(builder => builder
.AllowAnyOrigin()
.AllowAnyMethod()
.AllowAnyHeader()
.AllowCredentials());
3. in controller before action:
[EnableCors("AllowOrigin")]
I honestly fount the best way to get around this was to just create another model with all the fields that you require and named slightly different. Run migrations. Delete unused model and run migrations again. Voila.
Use AssemblyInfo.cs
Create the file in App_Code: and fill out the following or use Google for other attribute/property possibilities.
AssemblyInfo.cs
using System.Reflection;
[assembly: AssemblyDescription("Very useful stuff here.")]
[assembly: AssemblyCompany("companyname")]
[assembly: AssemblyCopyright("Copyright © me 2009")]
[assembly: AssemblyProduct("NeatProduct")]
[assembly: AssemblyVersion("1.1.*")]
AssemblyVersion being the part you are really after.
Then if you are working on a website, in any aspx page, or control, you can add in the <Page> tag, the following:
CompilerOptions="<folderpath>\App_Code\AssemblyInfo.cs"
(replacing folderpath with appropriate variable of course).
I don't believe you need to add compiler options in any manner for other classes; all the ones in the App_Code should receive the version information when they are compiled.
Hope that helps.
The padding options padx
and pady
of the grid
and pack
methods can take a 2-tuple that represent the left/right and top/bottom padding.
Here's an example:
import tkinter as tk
class MyApp():
def __init__(self):
self.root = tk.Tk()
l1 = tk.Label(self.root, text="Hello")
l2 = tk.Label(self.root, text="World")
l1.grid(row=0, column=0, padx=(100, 10))
l2.grid(row=1, column=0, padx=(10, 100))
app = MyApp()
app.root.mainloop()
No.
The content-type should be whatever it is known to be, if you know it. application/octet-stream
is defined as "arbitrary binary data" in RFC 2046, and there's a definite overlap here of it being appropriate for entities whose sole intended purpose is to be saved to disk, and from that point on be outside of anything "webby". Or to look at it from another direction; the only thing one can safely do with application/octet-stream is to save it to file and hope someone else knows what it's for.
You can combine the use of Content-Disposition
with other content-types, such as image/png
or even text/html
to indicate you want saving rather than display. It used to be the case that some browsers would ignore it in the case of text/html
but I think this was some long time ago at this point (and I'm going to bed soon so I'm not going to start testing a whole bunch of browsers right now; maybe later).
RFC 2616 also mentions the possibility of extension tokens, and these days most browsers recognise inline
to mean you do want the entity displayed if possible (that is, if it's a type the browser knows how to display, otherwise it's got no choice in the matter). This is of course the default behaviour anyway, but it means that you can include the filename
part of the header, which browsers will use (perhaps with some adjustment so file-extensions match local system norms for the content-type in question, perhaps not) as the suggestion if the user tries to save.
Hence:
Content-Type: application/octet-stream
Content-Disposition: attachment; filename="picture.png"
Means "I don't know what the hell this is. Please save it as a file, preferably named picture.png".
Content-Type: image/png
Content-Disposition: attachment; filename="picture.png"
Means "This is a PNG image. Please save it as a file, preferably named picture.png".
Content-Type: image/png
Content-Disposition: inline; filename="picture.png"
Means "This is a PNG image. Please display it unless you don't know how to display PNG images. Otherwise, or if the user chooses to save it, we recommend the name picture.png for the file you save it as".
Of those browsers that recognise inline
some would always use it, while others would use it if the user had selected "save link as" but not if they'd selected "save" while viewing (or at least IE used to be like that, it may have changed some years ago).
if you want to kill a specific node process , you can go to command line route and type:
ps aux | grep node
to get a list of all node process ids. now you can get your process id(pid), then do:
kill -9 PID
and if you want to kill all node processes then do:
killall -9 node
-9 switch is like end task on windows. it will force the process to end. you can do:
kill -l
to see all switches of kill command and their comments.
timeboard
package does this.
Suppose your date is 04 Sep 2017. In spite of being a Monday, it was a holiday in the US (the Labor Day). So, the most recent business day was Friday, Sep 1.
>>> import timeboard.calendars.US as US
>>> clnd = US.Weekly8x5()
>>> clnd('04 Sep 2017').rollback().to_timestamp().date()
datetime.date(2017, 9, 1)
In UK, 04 Sep 2017 was the regular business day, so the most recent business day was itself.
>>> import timeboard.calendars.UK as UK
>>> clnd = UK.Weekly8x5()
>>> clnd('04 Sep 2017').rollback().to_timestamp().date()
datetime.date(2017, 9, 4)
DISCLAIMER: I am the author of timeboard.
Use Layout inflater method in your button click. it will change your current .xml to targeted .xml file. Google for layout inflater code.
Import Module - You don't need additional efforts to fetch another thing from module. It has disadvantages such as redundant typing
Module Import From - Less typing &More control over which items of a module can be accessed.To use a new item from the module you have to update your import statement.
Because this answer is deprecated since iOS 10.0, a better answer would be:
if #available(iOS 10.0, *) {
UIApplication.shared.open(url, options: [:], completionHandler: nil)
}else{
UIApplication.shared.openURL(url)
}
y en Objective-c
[[UIApplication sharedApplication] openURL:@"url string" options:@{} completionHandler:^(BOOL success) {
if (success) {
NSLog(@"Opened url");
}
}];
It seems you require the following plugin: https://github.com/yearofmoo/AngularJS-Scope.onReady
It basically gives you the functionality to run your directive code after the your scope or data is loaded i.e. $scope.$whenReady
Use Google CDN for fast loading:
<script type="text/javascript" src="//ajax.googleapis.com/ajax/libs/jquery/2.0.0/jquery.min.js"></script>
For the last part: Although String is a subset of Object, but List<String> is not inherited from List<Object>.
Nowadays it is even easier to clone the machine with EBS-backed instances released a while ago. This is how we do it in BitNami Cloud Hosting. Basically you just take a snapshot of the instance which can be used later to launch a new server. You can do it either using AWS console (saving the EBS-backed instance as AWS AMI) or using the EC2 API tools:
Cloning the instance is nothing else but creating the backup and then launching a new server based on that. You can find bunch of articles out there describing this problem, try to find the info about "how to ..." backup or resize the whole EC2 instance, for example this blog is a really good place to start: alestic.com
Take a look at the following link. This is the best answer I've found so far.. :)
function dateDiff ($d1, $d2) {
// Return the number of days between the two dates:
return round(abs(strtotime($d1) - strtotime($d2))/86400);
} // end function dateDiff
It doesn't matter which date is earlier or later when you pass in the date parameters. The function uses the PHP ABS() absolute value to always return a postive number as the number of days between the two dates.
Keep in mind that the number of days between the two dates is NOT inclusive of both dates. So if you are looking for the number of days represented by all the dates between and including the dates entered, you will need to add one (1) to the result of this function.
For example, the difference (as returned by the above function) between 2013-02-09 and 2013-02-14 is 5. But the number of days or dates represented by the date range 2013-02-09 - 2013-02-14 is 6.
Remove Postmaster file in "C:\Program Files\PostgreSQL\9.6\data"
and restart the PostgreSQL services
This solution worked for me.
function isset(object){
return (typeof object !=='undefined');
}
Who needs to update string and numbers
SET @a = 0;
UPDATE obj_disposition SET CODE = CONCAT('CD_', @a:=@a+1);
Other answers mainly get all name of object, to get value of property, you can use yourObj[name]
, for example:
var propNames = Object.getOwnPropertyNames(yourObj);
propNames.forEach(
function(propName) {
console.log(
'name: ' + propName
+ ' value: ' + yourObj[propName]);
}
);
You could just outright select the elements of interest.
$('a[href*="?"]').each(function() {
alert('Contains question mark');
});
http://jsfiddle.net/mattball/TzUN3/
Note that you were using the attribute-ends-with
selector, the above code uses the attribute-contains
selector, which is what it sounds like you're actually aiming for.
All of the above - for whatever reason I was doing some big refactor and starting to get this. I renamed the package my interface was in and that cleared it. Hope that helps.
You can do as yAnTar advised
ALTER TABLE TABLE_NAME ADD Id INT AUTO_INCREMENT PRIMARY KEY
OR
You can add a constraint
ALTER TABLE TABLE_NAME ADD CONSTRAINT constr_ID UNIQUE (user_id, game_id, date, time)
But I think to not lose your existing data, you can add an indentity column and then make a composite key.
I recommend installing the custom_error_message gem (or as a plugin) originally written by David Easley
It lets you do stuff like:
validates_presence_of :non_friendly_field_name, :message => "^Friendly field name is blank"
dir /ad /b /s
will give the required answer.
WinSCp now supports S3 protocol
First, make sure your AWS user with S3 access permissions has an “Access key ID” created. You also have to know the “Secret access key”. Access keys are created and managed on Users page of IAM Management Console.
Make sure New site node is selected.
On the New site node, select Amazon S3 protocol.
Enter your AWS user Access key ID and Secret access key
Save your site settings using the Save button.
Login using the Login button.
next
- it's like return
, but for blocks! (So you can use this in any proc
/lambda
too.)
That means you can also say next n
to "return" n
from the block. For instance:
puts [1, 2, 3].map do |e|
next 42 if e == 2
e
end.inject(&:+)
This will yield 46
.
Note that return
always returns from the closest def
, and never a block; if there's no surrounding def
, return
ing is an error.
Using return
from within a block intentionally can be confusing. For instance:
def my_fun
[1, 2, 3].map do |e|
return "Hello." if e == 2
e
end
end
my_fun
will result in "Hello."
, not [1, "Hello.", 2]
, because the return
keyword pertains to the outer def
, not the inner block.
similar solution can be found here using jquery to set the auto width when focus (or mouseenter) and set the orignal width back when blur (or mouseleave) http://css-tricks.com/select-cuts-off-options-in-ie-fix/.
You need to give a function to be called after the time delay as the second argument to after
:
after(delay_ms, callback=None, *args)
Registers an alarm callback that is called after a given time.
So what you really want to do is this:
tiles_letter = ['a', 'b', 'c', 'd', 'e']
def add_letter():
rand = random.choice(tiles_letter)
tile_frame = Label(frame, text=rand)
tile_frame.pack()
root.after(500, add_letter)
tiles_letter.remove(rand) # remove that tile from list of tiles
root.after(0, add_letter) # add_letter will run as soon as the mainloop starts.
root.mainloop()
You also need to schedule the function to be called again by repeating the call to after
inside the callback function, since after
only executes the given function once. This is also noted in the documentation:
The callback is only called once for each call to this method. To keep calling the callback, you need to reregister the callback inside itself
Note that your example will throw an exception as soon as you've exhausted all the entries in tiles_letter
, so you need to change your logic to handle that case whichever way you want. The simplest thing would be to add a check at the beginning of add_letter
to make sure the list isn't empty, and just return
if it is:
def add_letter():
if not tiles_letter:
return
rand = random.choice(tiles_letter)
tile_frame = Label(frame, text=rand)
tile_frame.pack()
root.after(500, add_letter)
tiles_letter.remove(rand) # remove that tile from list of tiles
Live-Demo: repl.it
This is my working code. Thanks to Paulo for the links. You create a custom error handler and call the trigger_error
function with the correct $errno
exception, even if it's not an error. Make sure you can write to the log file directory without administrator access.
<?php
$logfile_dir = "C:\workspace\logs\\"; // or "/var/log/" for Linux
$logfile = $logfile_dir . "php_" . date("y-m-d") . ".log";
$logfile_delete_days = 30;
function error_handler($errno, $errstr, $errfile, $errline)
{
global $logfile_dir, $logfile, $logfile_delete_days;
if (!(error_reporting() & $errno)) {
// This error code is not included in error_reporting, so let it fall
// through to the standard PHP error handler
return false;
}
$filename = basename($errfile);
switch ($errno) {
case E_USER_ERROR:
file_put_contents($logfile, date("y-m-d H:i:s.").gettimeofday()["usec"] . " $filename ($errline): " . "ERROR >> message = [$errno] $errstr\n", FILE_APPEND | LOCK_EX);
exit(1);
break;
case E_USER_WARNING:
file_put_contents($logfile, date("y-m-d H:i:s.").gettimeofday()["usec"] . " $filename ($errline): " . "WARNING >> message = $errstr\n", FILE_APPEND | LOCK_EX);
break;
case E_USER_NOTICE:
file_put_contents($logfile, date("y-m-d H:i:s.").gettimeofday()["usec"] . " $filename ($errline): " . "NOTICE >> message = $errstr\n", FILE_APPEND | LOCK_EX);
break;
default:
file_put_contents($logfile, date("y-m-d H:i:s.").gettimeofday()["usec"] . " $filename ($errline): " . "UNKNOWN >> message = $errstr\n", FILE_APPEND | LOCK_EX);
break;
}
// delete any files older than 30 days
$files = glob($logfile_dir . "*");
$now = time();
foreach ($files as $file)
if (is_file($file))
if ($now - filemtime($file) >= 60 * 60 * 24 * $logfile_delete_days)
unlink($file);
return true; // Don't execute PHP internal error handler
}
set_error_handler("error_handler");
trigger_error("testing 1,2,3", E_USER_NOTICE);
?>
The currently selected solution produces incorrect results. To correctly solve this problem, we can perform a left-join from df1
to df2
, making sure to first get just the unique rows for df2
.
First, we need to modify the original DataFrame to add the row with data [3, 10].
df1 = pd.DataFrame(data = {'col1' : [1, 2, 3, 4, 5, 3],
'col2' : [10, 11, 12, 13, 14, 10]})
df2 = pd.DataFrame(data = {'col1' : [1, 2, 3],
'col2' : [10, 11, 12]})
df1
col1 col2
0 1 10
1 2 11
2 3 12
3 4 13
4 5 14
5 3 10
df2
col1 col2
0 1 10
1 2 11
2 3 12
Perform a left-join, eliminating duplicates in df2
so that each row of df1
joins with exactly 1 row of df2
. Use the parameter indicator
to return an extra column indicating which table the row was from.
df_all = df1.merge(df2.drop_duplicates(), on=['col1','col2'],
how='left', indicator=True)
df_all
col1 col2 _merge
0 1 10 both
1 2 11 both
2 3 12 both
3 4 13 left_only
4 5 14 left_only
5 3 10 left_only
Create a boolean condition:
df_all['_merge'] == 'left_only'
0 False
1 False
2 False
3 True
4 True
5 True
Name: _merge, dtype: bool
A few solutions make the same mistake - they only check that each value is independently in each column, not together in the same row. Adding the last row, which is unique but has the values from both columns from df2
exposes the mistake:
common = df1.merge(df2,on=['col1','col2'])
(~df1.col1.isin(common.col1))&(~df1.col2.isin(common.col2))
0 False
1 False
2 False
3 True
4 True
5 False
dtype: bool
This solution gets the same wrong result:
df1.isin(df2.to_dict('l')).all(1)
Imports System.Net
Module MainLine
Sub Main()
Dim hostName As String = Dns.GetHostName
Console.WriteLine("Host Name : " & hostName & vbNewLine)
For Each address In Dns.GetHostEntry(hostName).AddressList()
Select Case Convert.ToInt32(address.AddressFamily)
Case 2
Console.WriteLine("IP Version 4 Address: " & address.ToString)
Case 23
Console.WriteLine("IP Version 6 Address: " & address.ToString)
End Select
Next
Console.ReadKey()
End Sub
End Module
The attributes
property contains them all:
$(this).each(function() {
$.each(this.attributes, function() {
// this.attributes is not a plain object, but an array
// of attribute nodes, which contain both the name and value
if(this.specified) {
console.log(this.name, this.value);
}
});
});
What you can also do is extending .attr
so that you can call it like .attr()
to get a plain object of all attributes:
(function(old) {
$.fn.attr = function() {
if(arguments.length === 0) {
if(this.length === 0) {
return null;
}
var obj = {};
$.each(this[0].attributes, function() {
if(this.specified) {
obj[this.name] = this.value;
}
});
return obj;
}
return old.apply(this, arguments);
};
})($.fn.attr);
Usage:
var $div = $("<div data-a='1' id='b'>");
$div.attr(); // { "data-a": "1", "id": "b" }
Another way to do this is to reassign df
based on a cross section of df
, using the .xs method.
>>> df
a
b c
0 1 2
1 3 4
>>> df = df.xs('a', axis=1, drop_level=True)
# 'a' : key on which to get cross section
# axis=1 : get cross section of column
# drop_level=True : returns cross section without the multilevel index
>>> df
b c
0 1 2
1 3 4
For closing a asp.net windows application,
Then write the below given code inside its click event
" this.close(); "
ie:
private void button2_Click(object sender, EventArgs e)
{
this.Close();
}
Niche Answer:
If you have a zfs pool on that device, at least when it's a file-based pool, lsof
will not show the usage. But you can simply run
sudo zpool export mypoo
and then unmount.
"Make browser window blink in task Bar"
via Javascript
is not possible!!
I had the same problem when i have trying to read xml that was extracted from archive to memory stream.
MemoryStream SubSetupStream = new MemoryStream();
using (ZipFile archive = ZipFile.Read(zipPath))
{
archive.Password = "SomePass";
foreach (ZipEntry file in archive)
{
file.Extract(SubSetupStream);
}
}
Problem was in these lines:
XmlDocument doc = new XmlDocument();
doc.Load(SubSetupStream);
And solution is (Thanks to @Phil):
if (SubSetupStream.Position>0)
{
SubSetupStream.Position = 0;
}
file = request.FILES['filename']
file.name # Gives name
file.content_type # Gives Content type text/html etc
file.size # Gives file's size in byte
file.read() # Reads file
pipenv want combine all, in addition to previous it installs "requirements" (into the active virtual environment or create its own if none is active)
So maybe you will be happy with pipenv only.
But I use: pyenv + pyenv-virtualenvwrapper, + pipenv (pipenv for installing requirements only).
In Debian:
apt install libffi-dev
install pyenv based on https://www.tecmint.com/pyenv-install-and-manage-multiple-python-versions-in-linux/, but..
.. but instead of pyenv-virtualenv install pyenv-virtualenvwrapper (which can be standalone library or pyenv plugin, here the 2nd option):
pyenv install 3.9.0
git clone https://github.com/pyenv/pyenv-virtualenvwrapper.git $(pyenv root)/plugins/pyenv-virtualenvwrapper
into ~/.bashrc add: export $VIRTUALENVWRAPPER_PYTHON="/usr/bin/python3"
source ~/.bashrc
pyenv virtualenvwrapper
Then create virtual environments for your projects (workingdir must exist):
pyenv local 3.9.0 # to prevent 'interpreter not found' in mkvirtualenv
python -m pip install --upgrade pip setuptools wheel
mkvirtualenv <venvname> -p python3.9 -a <workingdir>
and switch between projects:
workon <venvname>
python -m pip install --upgrade pip setuptools wheel pipenv
Inside a project I have the file requirements.txt, without fixing the versions inside (if some version limitation is not neccessary). You have 2 possible tools to install them into the current virtual environment: pip-tools or pipenv. Lets say you will use pipenv:
pipenv install -r requirements.txt
this will create Pipfile and Pipfile.lock files, fixed versions are in the 2nd one. If you want reinstall somewhere exactly same versions then (Pipfile.lock must be present):
pipenv install
Remember that Pipfile.lock is related to some Python version and need to be recreated if you use a different one.
As you see I write requirements.txt. This has some problems: You must remove a removed package from Pipfile too. So writing Pipfile directly is probably better.
So you can see I use pipenv very poorly. Maybe if you will use it well, it can replace everything?
EDIT 2021.01: I have changed my stack to: pyenv + pyenv-virtualenvwrapper + poetry
. Ie. I use no apt or pip installation of virtualenv or virtualenvwrapper, and instead I install pyenv
's plugin pyenv-virtualenvwrapper
. This is easier way.
Poetry
is great for me:
poetry add <package> # install single package
poetry remove <package>
poetry install # if you remove poetry.lock poetry will re-calculate versions
try:
SELECT CAST( CAST([field] AS VARBINARY) AS varchar)
you can first install some package like this and then check its version
pip install package
import package
print(package.__version__)
it should give you package version
You might decide not to use IHttpActionResult
because your existing code builds a HttpResponseMessage
that doesn't fit one of the canned responses. You can however adapt HttpResponseMessage
to IHttpActionResult
using the canned response of ResponseMessage
. It took me a while to figure this out, so I wanted to post it showing that you don't necesarily have to choose one or the other:
public IHttpActionResult SomeAction()
{
IHttpActionResult response;
//we want a 303 with the ability to set location
HttpResponseMessage responseMsg = new HttpResponseMessage(HttpStatusCode.RedirectMethod);
responseMsg.Headers.Location = new Uri("http://customLocation.blah");
response = ResponseMessage(responseMsg);
return response;
}
Note, ResponseMessage
is a method of the base class ApiController
that your controller should inherit from.
I tried opening php-cgi.exe directly and it gave me a more clear error message.
public static string RemoveAllSpecialCharacters(this string text) {
if (string.IsNullOrEmpty(text))
return text;
string result = Regex.Replace(text, "[:!@#$%^&*()}{|\":?><\\[\\]\\;'/.,~]", " ");
return result;
}
You need to iterate over your ResultSet calling next()
.
This is an example from java2s.com:
DatabaseMetaData md = conn.getMetaData();
ResultSet rs = md.getTables(null, null, "%", null);
while (rs.next()) {
System.out.println(rs.getString(3));
}
Column 3 is the TABLE_NAME
(see documentation of DatabaseMetaData::getTables
).
The "official" way to get the vs2015 is to go to https://my.visualstudio.com/ ; join the " Visual Studio Dev Essentials" and then search the relevant file to download https://my.visualstudio.com/Downloads?q=Visual%20Studio%202015%20with%20Update%203
It is not at all obvious why one would want to concatenate the (decimal) "ascii values". What is certain is that concatenating them without leading zeroes (or some other padding or a delimiter) is useless -- nothing can be reliably recovered from such an output.
>>> tests = ["hi", "Hi", "HI", '\x0A\x29\x00\x05']
>>> ["".join("%d" % ord(c) for c in s) for s in tests]
['104105', '72105', '7273', '104105']
Note that the first 3 outputs are of different length. Note that the fourth result is the same as the first.
>>> ["".join("%03d" % ord(c) for c in s) for s in tests]
['104105', '072105', '072073', '010041000005']
>>> [" ".join("%d" % ord(c) for c in s) for s in tests]
['104 105', '72 105', '72 73', '10 41 0 5']
>>> ["".join("%02x" % ord(c) for c in s) for s in tests]
['6869', '4869', '4849', '0a290005']
>>>
Note no such problems.
People often claim that printf
is much faster. This is largely a myth. I just tested it, with the following results:
cout with only endl 1461.310252 ms
cout with only '\n' 343.080217 ms
printf with only '\n' 90.295948 ms
cout with string constant and endl 1892.975381 ms
cout with string constant and '\n' 416.123446 ms
printf with string constant and '\n' 472.073070 ms
cout with some stuff and endl 3496.489748 ms
cout with some stuff and '\n' 2638.272046 ms
printf with some stuff and '\n' 2520.318314 ms
Conclusion: if you want only newlines, use printf
; otherwise, cout
is almost as fast, or even faster. More details can be found on my blog.
To be clear, I'm not trying to say that iostream
s are always better than printf
; I'm just trying to say that you should make an informed decision based on real data, not a wild guess based on some common, misleading assumption.
Update: Here's the full code I used for testing. Compiled with g++
without any additional options (apart from -lrt
for the timing).
#include <stdio.h>
#include <iostream>
#include <ctime>
class TimedSection {
char const *d_name;
timespec d_start;
public:
TimedSection(char const *name) :
d_name(name)
{
clock_gettime(CLOCK_REALTIME, &d_start);
}
~TimedSection() {
timespec end;
clock_gettime(CLOCK_REALTIME, &end);
double duration = 1e3 * (end.tv_sec - d_start.tv_sec) +
1e-6 * (end.tv_nsec - d_start.tv_nsec);
std::cerr << d_name << '\t' << std::fixed << duration << " ms\n";
}
};
int main() {
const int iters = 10000000;
char const *text = "01234567890123456789";
{
TimedSection s("cout with only endl");
for (int i = 0; i < iters; ++i)
std::cout << std::endl;
}
{
TimedSection s("cout with only '\\n'");
for (int i = 0; i < iters; ++i)
std::cout << '\n';
}
{
TimedSection s("printf with only '\\n'");
for (int i = 0; i < iters; ++i)
printf("\n");
}
{
TimedSection s("cout with string constant and endl");
for (int i = 0; i < iters; ++i)
std::cout << "01234567890123456789" << std::endl;
}
{
TimedSection s("cout with string constant and '\\n'");
for (int i = 0; i < iters; ++i)
std::cout << "01234567890123456789\n";
}
{
TimedSection s("printf with string constant and '\\n'");
for (int i = 0; i < iters; ++i)
printf("01234567890123456789\n");
}
{
TimedSection s("cout with some stuff and endl");
for (int i = 0; i < iters; ++i)
std::cout << text << "01234567890123456789" << i << std::endl;
}
{
TimedSection s("cout with some stuff and '\\n'");
for (int i = 0; i < iters; ++i)
std::cout << text << "01234567890123456789" << i << '\n';
}
{
TimedSection s("printf with some stuff and '\\n'");
for (int i = 0; i < iters; ++i)
printf("%s01234567890123456789%i\n", text, i);
}
}
Array's has
array.length
whereas List has
list.size()
Replace array.size()
to array.length
numpy has a great tool for this task ("numpy.reshape") link to reshape documentation
a = [[ 0 1]
[ 2 3]
[ 4 5]
[ 6 7]
[ 8 9]
[10 11]
[12 13]
[14 15]
[16 17]]
`numpy.reshape(a,(3,3))`
you can also use the "-1" trick
`a = a.reshape(-1,3)`
the "-1" is a wild card that will let the numpy algorithm decide on the number to input when the second dimension is 3
so yes.. this would also work:
a = a.reshape(3,-1)
and this:
a = a.reshape(-1,2)
would do nothing
and this:
a = a.reshape(-1,9)
would change the shape to (2,9)
Try this:
int dayOfWeek = date.get(Calendar.DAY_OF_WEEK);
String weekday = new DateFormatSymbols().getShortWeekdays()[dayOfWeek];
I have Visual Studio 2013 Express. I had to delete the registry key under:
hkey_current_user\software\Microsoft\VSCommon\12.\clientservices\tokenstorge\VWDExpress\ideuser
If you are using the ‘static’ keyword without the ‘final’ keyword, this should be a signal to carefully consider your design. Even the presence of a ‘final’ is not a free pass, since a mutable static final object can be just as dangerous.
I would estimate somewhere around 85% of the time I see a ‘static’ without a ‘final’, it is WRONG. Often, I will find strange workarounds to mask or hide these problems.
Please don’t create static mutables. Especially Collections. In general, Collections should be initialized when their containing object is initialized and should be designed so that they are reset or forgotten about when their containing object is forgotten.
Using statics can create very subtle bugs which will cause sustaining engineers days of pain. I know, because I’ve both created and hunted these bugs.
If you would like more details, please read on…
Why Not Use Statics?
There are many issues with statics, including writing and executing tests, as well as subtle bugs that are not immediately obvious.
Code that relies on static objects can’t be easily unit tested, and statics can’t be easily mocked (usually).
If you use statics, it is not possible to swap the implementation of the class out in order to test higher level components. For example, imagine a static CustomerDAO that returns Customer objects it loads from the database. Now I have a class CustomerFilter, that needs to access some Customer objects. If CustomerDAO is static, I can’t write a test for CustomerFilter without first initializing my database and populating useful information.
And database population and initialization takes a long time. And in my experience, your DB initialization framework will change over time, meaning data will morph, and tests may break. IE, imagine Customer 1 used to be a VIP, but the DB initialization framework changed, and now Customer 1 is no longer VIP, but your test was hard-coded to load Customer 1…
A better approach is to instantiate a CustomerDAO, and pass it into the CustomerFilter when it is constructed. (An even better approach would be to use Spring or another Inversion of Control framework.
Once you do this, you can quickly mock or stub out an alternate DAO in your CustomerFilterTest, allowing you to have more control over the test,
Without the static DAO, the test will be faster (no db initialization) and more reliable (because it won’t fail when the db initialization code changes). For example, in this case ensuring Customer 1 is and always will be a VIP, as far as the test is concerned.
Executing Tests
Statics cause a real problem when running suites of unit tests together (for example, with your Continuous Integration server). Imagine a static map of network Socket objects that remains open from one test to another. The first test might open a Socket on port 8080, but you forgot to clear out the Map when the test gets torn down. Now when a second test launches, it is likely to crash when it tries to create a new Socket for port 8080, since the port is still occupied. Imagine also that Socket references in your static Collection are not removed, and (with the exception of WeakHashMap) are never eligible to be garbage collected, causing a memory leak.
This is an over-generalized example, but in large systems, this problem happens ALL THE TIME. People don’t think of unit tests starting and stopping their software repeatedly in the same JVM, but it is a good test of your software design, and if you have aspirations towards high availability, it is something you need to be aware of.
These problems often arise with framework objects, for example, your DB access, caching, messaging, and logging layers. If you are using Java EE or some best of breed frameworks, they probably manage a lot of this for you, but if like me you are dealing with a legacy system, you might have a lot of custom frameworks to access these layers.
If the system configuration that applies to these framework components changes between unit tests, and the unit test framework doesn’t tear down and rebuild the components, these changes can’t take effect, and when a test relies on those changes, they will fail.
Even non-framework components are subject to this problem. Imagine a static map called OpenOrders. You write one test that creates a few open orders, and checks to make sure they are all in the right state, then the test ends. Another developer writes a second test which puts the orders it needs into the OpenOrders map, then asserts the number of orders is accurate. Run individually, these tests would both pass, but when run together in a suite, they will fail.
Worse, failure might be based on the order in which the tests were run.
In this case, by avoiding statics, you avoid the risk of persisting data across test instances, ensuring better test reliability.
Subtle Bugs
If you work in high availability environment, or anywhere that threads might be started and stopped, the same concern mentioned above with unit test suites can apply when your code is running on production as well.
When dealing with threads, rather than using a static object to store data, it is better to use an object initialized during the thread’s startup phase. This way, each time the thread is started, a new instance of the object (with a potentially new configuration) is created, and you avoid data from one instance of the thread bleeding through to the next instance.
When a thread dies, a static object doesn’t get reset or garbage collected. Imagine you have a thread called “EmailCustomers”, and when it starts it populates a static String collection with a list of email addresses, then begins emailing each of the addresses. Lets say the thread is interrupted or canceled somehow, so your high availability framework restarts the thread. Then when the thread starts up, it reloads the list of customers. But because the collection is static, it might retain the list of email addresses from the previous collection. Now some customers might get duplicate emails.
An Aside: Static Final
The use of “static final” is effectively the Java equivalent of a C #define, although there are technical implementation differences. A C/C++ #define is swapped out of the code by the pre-processor, before compilation. A Java “static final” will end up memory resident on the stack. In that way, it is more similar to a “static const” variable in C++ than it is to a #define.
Summary
I hope this helps explain a few basic reasons why statics are problematic up. If you are using a modern Java framework like Java EE or Spring, etc, you may not encounter many of these situations, but if you are working with a large body of legacy code, they can become much more frequent.
AFAIK, RewriteBase is only used to fix cases where mod_rewrite is running in a .htaccess
file not at the root of a site and it guesses the wrong web path (as opposed to filesystem path) for the folder it is running in. So if you have a RewriteRule in a .htaccess in a folder that maps to http://example.com/myfolder
you can use:
RewriteBase myfolder
If mod_rewrite isn't working correctly.
Trying to use it to achieve something unusual, rather than to fix this problem sounds like a recipe to getting very confused.
Encapsulation: Hiding implementation details (NOTE: data AND/OR methods) such that only what is sensibly readable/writable/usable by externals is accessible to them, everything else is "untouchable" directly.
Abstraction: This sometimes refers specifically to a type that cannot be instantiated and which provides a template for other types that can be, usually via subclassing. More generally "abstraction" refers to making/having something that is less detailed, less specific, less granular.
There is some similarity, overlap between the concepts but the best way to remember it is like this: Encapsulation is more about hiding the details, whereas abstraction is more about generalizing the details.
Here's a quick example script that displays a form that changes the target type:
<script type="text/javascript">
function myTarget(form) {
for (i = 0; i < form.target_type.length; i++) {
if (form.target_type[i].checked)
val = form.target_type[i].value;
}
form.target = val;
return true;
}
</script>
<form action="" onSubmit="return myTarget(this);">
<input type="radio" name="target_type" value="_self" checked /> Self <br/>
<input type="radio" name="target_type" value="_blank" /> Blank <br/>
<input type="submit">
</form>
Apparently match_parent
is :
ConstraintLayout
ConstraintLayout
So if you need your views to function as match_parent
, then:
ConstraintLayout
should use 0dp
match_parent
Example:
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingBottom="16dp">
<android.support.design.widget.TextInputLayout
android:id="@+id/phoneNumberInputLayout"
android:layout_width="0dp"
android:layout_height="wrap_content"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent">
<android.support.design.widget.TextInputEditText
android:id="@+id/phoneNumber"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
</android.support.design.widget.TextInputLayout>
I made a solution that works very nice for me:
function shadeColor(color, percent) {
var R = parseInt(color.substring(1,3),16);
var G = parseInt(color.substring(3,5),16);
var B = parseInt(color.substring(5,7),16);
R = parseInt(R * (100 + percent) / 100);
G = parseInt(G * (100 + percent) / 100);
B = parseInt(B * (100 + percent) / 100);
R = (R<255)?R:255;
G = (G<255)?G:255;
B = (B<255)?B:255;
var RR = ((R.toString(16).length==1)?"0"+R.toString(16):R.toString(16));
var GG = ((G.toString(16).length==1)?"0"+G.toString(16):G.toString(16));
var BB = ((B.toString(16).length==1)?"0"+B.toString(16):B.toString(16));
return "#"+RR+GG+BB;
}
Example Lighten:
shadeColor("#63C6FF",40);
Example Darken:
shadeColor("#63C6FF",-40);
No, you cannot override a static method. The static resolves against the class, not the instance.
public class Parent {
public static String getCName() {
return "I am the parent";
}
}
public class Child extends Parent {
public static String getCName() {
return "I am the child";
}
}
Each class has a static method getCName(). When you call on the Class name it behaves as you would expect and each returns the expected value.
@Test
public void testGetCNameOnClass() {
assertThat(Parent.getCName(), is("I am the parent"));
assertThat(Child.getCName(), is("I am the child"));
}
No surprises in this unit test. But this is not overriding.This declaring something that has a name collision.
If we try to reach the static from an instance of the class (not a good practice), then it really shows:
private Parent cp = new Child();
`enter code here`
assertThat(cp.getCName(), is("I am the parent"));
Even though cp is a Child, the static is resolved through the declared type, Parent, instead of the actual type of the object. For non-statics, this is resolved correctly because a non-static method can override a method of its parent.
There are three possible ways to do that.
Option
SELECT lt.* FROM table_left lt
LEFT JOIN
table_right rt
ON rt.value = lt.value
WHERE rt.value IS NULL
Option
SELECT lt.* FROM table_left lt
WHERE lt.value NOT IN
(
SELECT value
FROM table_right rt
)
Option
SELECT lt.* FROM table_left lt
WHERE NOT EXISTS
(
SELECT NULL
FROM table_right rt
WHERE rt.value = lt.value
)
Had the same problem and this solved it for me (Powershell as admin):
Set-ItemProperty -Path HKLM:\Software\Policies\Microsoft\Windows\PowerShell -Name ExecutionPolicy -Value ByPass
This took me ages to figure out but could you try the same -
1 - Update and Upgrade
sudo apt-get update
sudo apt-get upgrade
2 - Purge MySQL Server and Client (if installed).
sudo apt-get purge mysql-server mysql-client
3 - Install MySQL Server and Client fresh
sudo apt-get install mysql-server mysql-client
4 - Test MySQL
mysql -u root -p
> enter root password
*** should get socket not found in /var/run/mysqld/mysql.sock
4 - Configure mysqld.cnf with nano of vi
sudo nano /etc/mysql/mysql.conf.d/mysqld.cnf
Change bind-address from 127.0.0.1 to localhost
bind-address = localhost
** Write and Exit
5 - Restart MySQL
sudo /etc/init.d/mysql restart
6 - check mysql
mysql -u root -p
> enter root password
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 4
Server version: 5.7.13-0ubuntu0.16.04.2 (Ubuntu)
Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql>
You should get in to mysql cli now.
Hope this helps
Code.Ph0y
Worksheets("Sheet1").Delete
Worksheets("Sheet2").Delete
You can do it in a shorthand as:
_.uniq(foo, 'a')
require.paths
is deprecated.
Go to your project folder and type
npm install socket.io
that should install it in the local ./node_modules folder where node will look for it.
I keep my things like this:
cd ~/Sites/
mkdir sweetnodeproject
cd sweetnodeproject
npm install socket.io
Create an app.js file
// app.js
var socket = require('socket.io')
now run my app
node app.js
Make sure you're using npm >= 1.0
and node >= 4.0
.
HTMLDocument DOC = this.MySuperBrowser.Document as HTMLDocument;
public IHTMLAnchorElement imageElementHref;
imageElementHref = DOC.getElementById("idfirsticonhref") as IHTMLAnchorElement;
Simply try this code
Many commands are already attached to simple ctrl+[key], you can also do chorded keybinding like ctrl a+b.
(In case this is your first time reading about chorded keybindings: They work by not letting go of the ctrl key and pressing a second key after the first.)
I have my Emmet: Wrap with Abbreviation
bound to ((ctrl) (w+a)).
In windows: File > Preferences > Keyboard Shortcuts ((ctrl) (k+s))> search for Wrap with Abbreviation > double-click > add your combonation.
So this is long after the initial question, and technically it isn't a direct answer to how to use Ajax call to populate exterior variable as the question asks. However in research and responses it's been found to be extremely difficult to do this without disabling asynchronous functions within the call, or by descending into what seems like the potential for callback hell. My solution for this has been to use Axios. Using this has dramatically simplified my usages of asynchronous calls getting in the way of getting at data.
For example if I were trying to access session variables in PHP, like the User ID, via a call from JS this might be a problem. Doing something like this..
async function getSession() {
'use strict';
const getSession = await axios("http:" + url + "auth/" + "getSession");
log(getSession.data);//test
return getSession.data;
}
Which calls a PHP function that looks like this.
public function getSession() {
$session = new SessionController();
$session->Session();
$sessionObj = new \stdClass();
$sessionObj->user_id = $_SESSION["user_id"];
echo json_encode($sessionObj);
}
To invoke this using Axios do something like this.
getSession().then(function (res) {
log(res);//test
anyVariable = res;
anyFunction(res);//set any variable or populate another function waiting for the data
});
The result would be, in this case a Json object from PHP.
{"user_id":"1111111-1111-1111-1111-111111111111"}
Which you can either use in a function directly in the response section of the Axios call or set a variable or invoke another function.
Proper syntax for the Axios call would actually look like this.
getSession().then(function (res) {
log(res);//test
anyVariable = res;
anyFunction(res);//set any variable or populate another function waiting for the data
}).catch(function (error) {
console.log(error);
});
For proper error handling.
I hope this helps anyone having these issues. And yes I am aware this technically is not a direct answer to the question but given the answers supplied already I felt the need to provide this alternative solution which dramatically simplified my code on the client and server sides.
maybe something like
$('div#someDiv').css("height", "auto");
This is actually pretty simple to fix, I originally wrote about the fix ~10 years ago over here https://ao.gl/phpmyadmin-invalid-field-count-in-csv-input-on-line-1/
What you want to do is change "Fields terminated by" from ";" to "," and then make sure that the "Use LOCAL keyword" is selected.
I'm learning to code and I found this same problem. I believe the easier way to solve this is literaly overwriting the list like @kerby82 said:
An item in a list in Python can be set to a value using the form
x[n] = v
Where x is the name of the list, n is the index in the array and v is the value you want to set.
In your exemple:
aList = [123, 'xyz', 'zara', 'abc']
aList[0] = 2014
print aList
>>[2014, 'xyz', 'zara', 'abc']
The normal way to control this is with git config
For example
git config --global core.autocrlf true
For details, scroll down in this link to Pro Git to the section named "core.autocrlf"
If you want to know what file this is saved in, you can run the command:
git config --global --edit
and the git global config file should open in a text editor, and you can see where that file was loaded from.
From: http://jquery-howto.blogspot.com/2009/09/get-url-parameters-values-with-jquery.html
This is what you need :)
The following code will return a JavaScript Object containing the URL parameters:
// Read a page's GET URL variables and return them as an associative array.
function getUrlVars()
{
var vars = [], hash;
var hashes = window.location.href.slice(window.location.href.indexOf('?') + 1).split('&');
for(var i = 0; i < hashes.length; i++)
{
hash = hashes[i].split('=');
vars.push(hash[0]);
vars[hash[0]] = hash[1];
}
return vars;
}
For example, if you have the URL:
http://www.example.com/?me=myValue&name2=SomeOtherValue
This code will return:
{
"me" : "myValue",
"name2" : "SomeOtherValue"
}
and you can do:
var me = getUrlVars()["me"];
var name2 = getUrlVars()["name2"];
The response from server is JSON String format. If the set dataType as 'json' jquery will attempt to use it directly. You need to set dataType as 'text' and then parse it manually.
$.ajax({
type: 'GET',
dataType: "text", // You need to use dataType text else it will try to parse it.
url: "http://someotherdomain.com/service.svc",
success: function (responseData, textStatus, jqXHR) {
console.log("in");
var data = JSON.parse(responseData['AuthenticateUserResult']);
console.log(data);
},
error: function (responseData, textStatus, errorThrown) {
alert('POST failed.');
}
});
Here is a Swift way to get screen status bar height:
var screenStatusBarHeight: CGFloat {
return UIApplication.sharedApplication().statusBarFrame.height
}
These are included as a standard function in a project of mine: https://github.com/goktugyil/EZSwiftExtensions
I believe your second activity is probably not linked to your main activity as a child activity. Check your AndroidManifest.xml
file and see if the <activity>
entry for your child activity includes a android:parentActivityName
attribute. It should look something like this:
<?xml ...?>
...
<activity
android:name=".MainActivity"
...>
</activity>
<activity
android:name=".ChildActivity"
android:parentActivityName=".MainActivity"
...>
</activity>
...
Comments in the following listing of Java Code are the greyed out characters:
/**
* The HelloWorldApp class implements an application that
* simply displays "Hello World!" to the standard output.
*/
class HelloWorldApp {
public static void main(String[] args) {
System.out.println("Hello World!"); //Display the string.
}
}
The Java language supports three kinds of comments:
/* text */
The compiler ignores everything from /*
to */
.
/** documentation */
This indicates a documentation comment (doc comment, for short). The compiler ignores this kind of comment, just like it ignores comments that use /*
and */
. The JDK javadoc tool uses doc comments when preparing automatically generated documentation.
// text
The compiler ignores everything from //
to the end of the line.
Now regarding when you should be using them:
Use // text
when you want to comment a single line of code.
Use /* text */
when you want to comment multiple lines of code.
Use /** documentation */
when you would want to add some info about the program that can be used for automatic generation of program documentation.
The following will work even if it is dynamic/Ajax calls.
Script:
jQuery('body').on('keyup','input.addressCls',function(){
console.log('working');
});
Html,
<input class="addressCls" type="text" name="address" value="" required/>
I hope this working code will help someone who is trying to access dynamically/Ajax calls...
I got the following error using Docker 19.03.8 on CentOS 7:
COPY failed: stat /var/lib/docker/tmp/docker-builderXXXXXXX/abc.txt: no such file or directory
The solution for me was to build from Docker file with docker build .
instead of docker build - < Dockerfile
.
There is but one difference. You have to take care or name mangling win C++. But on windows you have to take care about 1) decrating the functions to be exported from the DLL 2) write a so called .def file which lists all the exported symbols.
In Windows while compiling a DLL have have to use
__declspec(dllexport)
but while using it you have to write __declspec(dllimport)
So the usual way of doing that is something like
#ifdef BUILD_DLL
#define EXPORT __declspec(dllexport)
#else
#define EXPORT __declspec(dllimport)
#endif
The naming is a bit confusing, because it is often named EXPORT.. But that's what you'll find in most of the headers somwhere. So in your case you'd write (with the above #define)
int DLL_EXPORT add.... int DLL_EXPORT mult...
Remember that you have to add the Preprocessor directive BUILD_DLL during building the shared library.
Regards Friedrich
$("input[type='checkbox']:not(:checked):not('\#chkAll\')").map(function () {
var a = "";
if (this.name != "chkAll") {
a = this.name + "|off";
}
return a;
}).get().join();
This will retrieve all unchecked checkboxes and exclude the "chkAll" checkbox that I use to check|uncheck all checkboxes. Since I want to know what value I'm passing to the database I set these to off, since the checkboxes give me a value of on.
//looking for unchecked checkboxes, but don’t include the checkbox all that checks or unchecks all checkboxes
//.map - Pass each element in the current matched set through a function, producing a new jQuery object containing the return values.
//.get - Retrieve the DOM elements matched by the jQuery object.
//.join - (javascript) joins the elements of an array into a string, and returns the string.The elements will be separated by a specified separator. The default separator is comma (,).
It depends on what environment you're running in. In a web browser you simply need to make sure that file1.js
is loaded before file2.js
:
<script src="file1.js"></script>
<script src="file2.js"></script>
In node.js, the recommended way is to make file1 a module then you can load it with the require
function:
require('path/to/file1.js');
It's also possible to use node's module style in HTML using the require.js library.
Simple! Create a dummy database (say abc)
Copy all these .myd, .myi, .frm files to mysql\data\abc wherein mysql\data\ is the place where .myd, .myi, .frm for all databases are stored.
Then go to phpMyadmin, go to db abc and you find your database.
is this already solved?
i also had this problem. I solved it just by cleaning the project.
Project>Clean>Clean projects selected below>Check [your project's name]
Try =Year(Now())
and format the cell as General
.
I have a far more simple solution, it is working for me; it is also a workaround but might be usable and you dont have to change your settings. I assume you can use value that will never be there, then you use it on your WHERE clause
DELETE FROM MyTable WHERE MyField IS_NOT_EQUAL AnyValueNoItemOnMyFieldWillEverHave
I don't like that solution either too much, that's why I am here, but it works and it seems better than what it has been answered
myScriptFile.js
// Switch current database to "mydatabase"
db = db.getSiblingDB('mydatabase');
// The mark for cutting initial output off
print("CUT_TO_HERE");
// Main output
// "toArray()" method allows to get all records
printjson( db.getCollection('jobs').find().toArray() );
Sending the query from terminal
-z
key of sed
allows treat output as a single multi-line string
$> mongo localhost --quiet myScriptFile.js | sed -z 's/^.*CUT_TO_HERE\n//' > output.json
string MyConString = "Data Source='mysql7.000webhost.com';" +
"Port=3306;" +
"Database='a455555_test';" +
"UID='a455555_me';" +
"PWD='something';";
Answering the "usefulness" part of the question:
One rather subtle gotcha of using FileChannel
over FileOutputStream
is that performing any of its blocking operations (e.g. read()
or write()
) from a thread that's in interrupted state will cause the channel to close abruptly with java.nio.channels.ClosedByInterruptException
.
Now, this could be a good thing if whatever the FileChannel
was used for is part of the thread's main function, and design took this into account.
But it could also be pesky if used by some auxiliary feature such as a logging function. For example, you can find your logging output suddenly closed if the logging function happens to be called by a thread that's also interrupted.
It's unfortunate this is so subtle because not accounting for this can lead to bugs that affect write integrity.[1][2]
To literally fix your example you would use this:
Sub Normalize()
Dim Ticker As Range
Sheets("Sheet1").Activate
Set Ticker = Range(Cells(2, 1), Cells(65, 1))
Ticker.Copy
Sheets("Sheet2").Select
Cells(1, 1).PasteSpecial xlPasteAll
End Sub
To Make slight improvments on it would be to get rid of the Select and Activates:
Sub Normalize()
With Sheets("Sheet1")
.Range(.Cells(2, 1), .Cells(65, 1)).Copy Sheets("Sheet2").Cells(1, 1)
End With
End Sub
but using the clipboard takes time and resources so the best way would be to avoid a copy and paste and just set the values equal to what you want.
Sub Normalize()
Dim CopyFrom As Range
Set CopyFrom = Sheets("Sheet1").Range("A2", [A65])
Sheets("Sheet2").Range("A1").Resize(CopyFrom.Rows.Count).Value = CopyFrom.Value
End Sub
To define the CopyFrom
you can use anything you want to define the range, You could use Range("A2:A65")
, Range("A2",[A65])
, Range("A2", "A65")
all would be valid entries. also if the A2:A65 Will never change the code could be further simplified to:
Sub Normalize()
Sheets("Sheet2").Range("A1:A65").Value = Sheets("Sheet1").Range("A2:A66").Value
End Sub
I added the Copy from range, and the Resize
property to make it slightly more dynamic in case you had other ranges you wanted to use in the future.
The classical answer that works in almost every environment is
SELECT ID, Name, blah, blah
FROM TableB TB
LEFT JOIN TableA TA
ON TB.ID=TA.ID
WHERE TA.ID IS NULL
sometimes NOT EXISTS may be not implemented (not working).
I would recommend you to use worksheet's index instead of using worksheet's name, in this way you can also loop through sheets "dynamically"
for i=1 to thisworkbook.sheets.count
sheets(i).activate
'You can add more code
with activesheet
'Code...
end with
next i
It will also, improve performance.
if anyone else need the solution
@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == android.R.id.home) {
onBackPressed(); return true;
}
return super.onOptionsItemSelected(item);
}
Technically, you should update a copyright year only if you made contributions to the work during that year. So if your website hasn't been updated in a given year, there is no ground to touch the file just to update the year.
You're looking for the wrong selector id:
$("#submitter").text(submitter_name);
should be
$("#submittername").text(submitter_name);
It depends a bit on the specific filesystem in use on the Linux server. Nowadays the default is ext3 with dir_index, which makes searching large directories very fast.
So speed shouldn't be an issue, other than the one you already noted, which is that listings will take longer.
There is a limit to the total number of files in one directory. I seem to remember it definitely working up to 32000 files.
element.onmousedown = null;
now you can go back to adding event listeners via
element.addEventListener('mousedown', handler, ...);
Very basic model with Gender field. GetGenderSelectItems()
returns select items needed to populate DropDownList.
public enum Gender
{
Male, Female
}
public class MyModel
{
public Gender Gender { get; set; }
public static IEnumerable<SelectListItem> GetGenderSelectItems()
{
yield return new SelectListItem { Text = "Male", Value = "Male" };
yield return new SelectListItem { Text = "Female", Value = "Female" };
}
}
Please make sure you wrapped your @Html.DropDownListFor
in a form tag.
@model MyModel
@using (Html.BeginForm("MyController", "MyAction", FormMethod.Post)
{
@Html.DropDownListFor(m => m.Gender, MyModel.GetGenderSelectItems())
<input type="submit" value="Send" />
}
Your .cshtml Razor view name should be the same as controller action name and folder name should match controller name e.g Views\MyController\MyAction.cshtml
.
public class MyController : Controller
{
public ActionResult MyAction()
{
// shows your form when you load the page
return View();
}
[HttpPost]
public ActionResult MyAction(MyModel model)
{
// the value is received in the controller.
var selectedGender = model.Gender;
return View(model);
}
}
Now let's make it strongly-typed and enum independent:
var genderSelectItems = Enum.GetValues(typeof(Gender))
.Cast<string>()
.Select(genderString => new SelectListItem
{
Text = genderString,
Value = genderString,
}).AsEnumerable();
Create your own shutdown script - called Myshutdown.bat - and do whatever you were going to do in your script and then at the end of it call shutdown /a. Then execute your bat file instead of the normal shutdown.
(See http://www.w7forums.com/threads/run-batch-file-on-shutdown.11860/ for more info.)
Don't forget to do to Project->Clean in eclipse to make sure that your classes are recompiled.
Also, here is how to calculate a 64-bit NSNumber
initialized with the Unix epoch in milliseconds, in case that is how you want to store it in CoreData. I needed this for my app which interacts with a system that stores dates this way.
+ (NSNumber*) longUnixEpoch {
return [NSNumber numberWithLongLong:[[NSDate date] timeIntervalSince1970] * 1000];
}
This solution is for Litespeed Server (Apache as well)
Add the following code in .htaccess
RewriteRule .* - [E=noabort:1]
RewriteRule .* - [E=noconntimeout:1]
Try checking his post. It shows how to implement transitions between web pages using AngularJS's ngRoute and ngAnimate: How to Make iPhone-Style Web Page Transitions Using AngularJS & CSS
Your script should look like:
prog1 &
prog2 &
.
.
progn &
wait
progn+1 &
progn+2 &
.
.
Assuming your system can take n jobs at a time. use wait to run only n jobs at a time.
Keep it Simple
Adding Floating Action Button using TextView by giving rounded xml background.
- Add compile com.android.support:design:23.1.1
to gradle file
Circle Xml is
<?xml version="1.0" encoding="utf-8"?>
<shape
xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="oval">
<solid
android:color="@color/colorPrimary"/>
<size
android:width="30dp"
android:height="30dp"/>
</shape>
Layout xml is
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:weightSum="5"
>
<RelativeLayout
android:id="@+id/viewA"
android:layout_height="0dp"
android:layout_width="match_parent"
android:layout_weight="1.6"
android:background="@drawable/contact_bg"
android:gravity="center_horizontal|center_vertical"
>
</RelativeLayout>
<LinearLayout
android:layout_height="0dp"
android:layout_width="match_parent"
android:layout_weight="3.4"
android:orientation="vertical"
android:padding="16dp"
android:weightSum="10"
>
<LinearLayout
android:layout_height="0dp"
android:layout_width="match_parent"
android:layout_weight="1"
>
</LinearLayout>
<LinearLayout
android:layout_height="0dp"
android:layout_width="match_parent"
android:layout_weight="1"
android:weightSum="4"
android:orientation="horizontal"
>
<TextView
android:layout_height="match_parent"
android:layout_width="0dp"
android:layout_weight="1"
android:text="Name"
android:textSize="22dp"
android:textColor="@android:color/black"
android:padding="3dp"
/>
<TextView
android:id="@+id/name"
android:layout_height="match_parent"
android:layout_width="0dp"
android:layout_weight="3"
android:text="Ritesh Kumar Singh"
android:singleLine="true"
android:textSize="22dp"
android:textColor="@android:color/black"
android:padding="3dp"
/>
</LinearLayout>
<LinearLayout
android:layout_height="0dp"
android:layout_width="match_parent"
android:layout_weight="1"
android:weightSum="4"
android:orientation="horizontal"
>
<TextView
android:layout_height="match_parent"
android:layout_width="0dp"
android:layout_weight="1"
android:text="Phone"
android:textSize="22dp"
android:textColor="@android:color/black"
android:padding="3dp"
/>
<TextView
android:id="@+id/number"
android:layout_height="match_parent"
android:layout_width="0dp"
android:layout_weight="3"
android:text="8283001122"
android:textSize="22dp"
android:textColor="@android:color/black"
android:singleLine="true"
android:padding="3dp"
/>
</LinearLayout>
<LinearLayout
android:layout_height="0dp"
android:layout_width="match_parent"
android:layout_weight="1"
android:weightSum="4"
android:orientation="horizontal"
>
<TextView
android:layout_height="match_parent"
android:layout_width="0dp"
android:layout_weight="1"
android:text="Email"
android:textSize="22dp"
android:textColor="@android:color/black"
android:padding="3dp"
/>
<TextView
android:layout_height="match_parent"
android:layout_width="0dp"
android:layout_weight="3"
android:text="[email protected]"
android:textSize="22dp"
android:singleLine="true"
android:textColor="@android:color/black"
android:padding="3dp"
/>
</LinearLayout>
<LinearLayout
android:layout_height="0dp"
android:layout_width="match_parent"
android:layout_weight="1"
android:weightSum="4"
android:orientation="horizontal"
>
<TextView
android:layout_height="match_parent"
android:layout_width="0dp"
android:layout_weight="1"
android:text="City"
android:textSize="22dp"
android:textColor="@android:color/black"
android:padding="3dp"
/>
<TextView
android:layout_height="match_parent"
android:layout_width="0dp"
android:layout_weight="3"
android:text="Panchkula"
android:textSize="22dp"
android:textColor="@android:color/black"
android:singleLine="true"
android:padding="3dp"
/>
</LinearLayout>
</LinearLayout>
</LinearLayout>
<TextView
android:id="@+id/floating"
android:transitionName="@string/transition_name_circle"
android:layout_width="100dp"
android:layout_height="100dp"
android:layout_margin="16dp"
android:clickable="false"
android:background="@drawable/circle"
android:elevation="10dp"
android:text="R"
android:textSize="40dp"
android:gravity="center"
android:textColor="@android:color/black"
app:layout_anchor="@id/viewA"
app:layout_anchorGravity="bottom"/>
</android.support.design.widget.CoordinatorLayout>
For someone using Android Studio 4.0 or above on MacOS 10.15.1 or above. Using command line blow:
# Deletes the Android Studio application
# Note that this may be different depending on what you named the application as, or whether you downloaded the preview version
rm -Rf /Applications/Android\ Studio.app
# Delete All Android Studio related preferences
# The asterisk here should target all folders/files beginning with the string before it
rm -Rf ~/Library/Preferences/Google/AndroidStudio*
# Deletes the Android Studio's plist file
rm -Rf ~/Library/Preferences/com.google.android.*
# Deletes the Android Emulator's plist file
rm -Rf ~/Library/Preferences/com.android.*
# Deletes mainly plugins (or at least according to what mine (Edric) contains)
rm -Rf ~/Library/Application\ Support/Google/AndroidStudio*
# Deletes all logs that Android Studio outputs
rm -Rf ~/Library/Logs/Google/AndroidStudio*
# Deletes Android Studio's caches
rm -Rf ~/Library/Caches/Google/AndroidStudio*
# Deletes older versions of Android Studio
rm -Rf ~/.AndroidStudio*
Difference
Library/Preferences/Google/AndroidStudio*
Library/Logs/Google/AndroidStudio*
Library/Caches/Google/AndroidStudio*
I used fontWithSize
for a label with light system font, but it changes back to normal system font.
If you want to keep the font's traits, better to include the descriptors.
label.font = UIFont(descriptor: label.font.fontDescriptor(), size: 16.0)
I would use:
awk 'FNR <= 1' file_*.txt
As @Kusalananda points out there are many ways to capture the first line in command line but using the head -n 1
may not be the best option when using wildcards since it will print additional info. Changing 'FNR == i'
to 'FNR <= i'
allows to obtain the first i lines.
For example, if you have n files named file_1.txt, ... file_n.txt:
awk 'FNR <= 1' file_*.txt
hello
...
bye
But with head
wildcards print the name of the file:
head -1 file_*.txt
==> file_1.csv <==
hello
...
==> file_n.csv <==
bye
To my knowledge you can use up to 5 methods to accomplish this:
Bootstrap: I don't have much experience with it but I don't think they provide styles for that.
.row
{
overflow: hidden;
height: 100%;
}
.row .col-md-3,
.row .col-md-9
{
padding: 30px 3.15% 99999px;
float: left;
margin-bottom: -99999px;
}
.row .col-md-3 p,
.row .col-md-9 p
{
margin-bottom: 30px;
}
.col-md-3
{
background: pink;
left:0;
width:25%
}
.col-md-9
{
width: 75%;
background: yellow;
}
I had a similar problem. The only thing that actually worked for me was to delete the conflicted subdirectories with:
svn delete --force ./SUB_DIR_NAME
Then copy them again from another root directory in the working copy that has them with:
svn copy ROOT_DIR_NAME/SUB_DIR_NAME
Then do
svn cleanup
and
svn add *
You might get warnings with the last one, but just ignore them and finally
svn ci .
If you don't want to use a DateTime or TimeSpan, and just want to store the time of day, you could just store the seconds since midnight in an Int32, or (if you don't even want seconds) the minutes since midnight would fit into an Int16. It would be trivial to write the few methods required to access the Hour, Minute and Second from such a value.
The only reason I can think of to avoid DateTime/TimeSpan would be if the size of the structure is critical.
(Of course, if you use a simple scheme like the above wrapped in a class, then it would also be trivial to replace the storage with a TimeSpan in future if you suddenly realise that would give you an advantage)
Create a Jenkins Job that runs on Master:
java -jar "%JENKINS_HOME%/war/WEB-INF/jenkins-cli.jar" -s "%JENKINS_URL%" safe-restart
This code help me in Attachment sending....
$mail->AddAttachment($_FILES['file']['tmp_name'], $_FILES['file']['name']);
Replace your AddAttachment(...) Code with above code
My best guess at why you had problems with the ----- covering your first result is that you actually read the input line from a file. That line probably had a \r on the end so you ended up with something like this:
-----------test2-------test3
What happened is the machine actually printed this:
test-------test2-------test3\r-------
That means, because of the carriage return at the end of test3, that the dashes after test3 were printed over the top of the first word (and a few of the existing dashes between test and test2 but you wouldn't notice that because they were already dashes).
If you want to upload file using AJAX here is code which you can use for file uploading.
$(document).ready(function() {
var options = {
beforeSubmit: showRequest,
success: showResponse,
dataType: 'json'
};
$('body').delegate('#image','change', function(){
$('#upload').ajaxForm(options).submit();
});
});
function showRequest(formData, jqForm, options) {
$("#validation-errors").hide().empty();
$("#output").css('display','none');
return true;
}
function showResponse(response, statusText, xhr, $form) {
if(response.success == false)
{
var arr = response.errors;
$.each(arr, function(index, value)
{
if (value.length != 0)
{
$("#validation-errors").append('<div class="alert alert-error"><strong>'+ value +'</strong><div>');
}
});
$("#validation-errors").show();
} else {
$("#output").html("<img src='"+response.file+"' />");
$("#output").css('display','block');
}
}
Here is the HTML for Upload the file
<form class="form-horizontal" id="upload" enctype="multipart/form-data" method="post" action="upload/image'" autocomplete="off">
<input type="file" name="image" id="image" />
</form>
In Python 3.2 a new html
module was introduced, which is used for escaping reserved characters from HTML markup.
It has one function escape()
:
>>> import html
>>> html.escape('x > 2 && x < 7 single quote: \' double quote: "')
'x > 2 && x < 7 single quote: ' double quote: "'
Starting from Android Studio 2.3.2 now you can create an AVD that has Play Store pre-installed on it. Currently, it is supported on the AVD's running
For other emulators, you can try the solution mentioned in this answer.
In most cases, it is enough just to hide the element, for example in this way:
export default class ErrorBoxComponent extends React.Component {
constructor(props) {
super(props);
this.state = {
isHidden: false
}
}
dismiss() {
this.setState({
isHidden: true
})
}
render() {
if (!this.props.error) {
return null;
}
return (
<div data-alert className={ "alert-box error-box " + (this.state.isHidden ? 'DISPLAY-NONE-CLASS' : '') }>
{ this.props.error }
<a href="#" className="close" onClick={ this.dismiss.bind(this) }>×</a>
</div>
);
}
}
Or you may render/rerender/not render via parent component like this
export default class ParentComponent extends React.Component {
constructor(props) {
super(props);
this.state = {
isErrorShown: true
}
}
dismiss() {
this.setState({
isErrorShown: false
})
}
showError() {
if (this.state.isErrorShown) {
return <ErrorBox
error={ this.state.error }
dismiss={ this.dismiss.bind(this) }
/>
}
return null;
}
render() {
return (
<div>
{ this.showError() }
</div>
);
}
}
export default class ErrorBoxComponent extends React.Component {
dismiss() {
this.props.dismiss();
}
render() {
if (!this.props.error) {
return null;
}
return (
<div data-alert className="alert-box error-box">
{ this.props.error }
<a href="#" className="close" onClick={ this.dismiss.bind(this) }>×</a>
</div>
);
}
}
Finally, there is a way to remove html node, but i really dont know is it a good idea. Maybe someone who knows React from internal will say something about this.
export default class ErrorBoxComponent extends React.Component {
dismiss() {
this.el.remove();
}
render() {
if (!this.props.error) {
return null;
}
return (
<div data-alert className="alert-box error-box" ref={ (el) => { this.el = el} }>
{ this.props.error }
<a href="#" className="close" onClick={ this.dismiss.bind(this) }>×</a>
</div>
);
}
}
You can always apply CCS class with rotate
property - http://css-tricks.com/snippets/css/text-rotation/
To keep rotated image within your div
dimensions you need to adjust CSS as well, there is no needs to use JavaScript except of adding class.
val() returns the value of the <select>
element, i.e. the value
attribute of the selected <option>
element.
Since you actually want the inner text of the selected <option>
element, you should match that element and use text() instead:
var nationality = $("#dancerCountry option:selected").text();
There are many misleading answers answers here, including the highly upvoted one (although I don't believe their ops meant harm). The short answer is: These are the same.
There are many keywords in the (T-)SQL language, but in the end, the only thing that really happens on the hardware is the operations as seen in the execution query plan.
The relational (maths theory) operation we do when we invoke [NOT] IN
and [NOT] EXISTS
is the semi join (anti-join when using NOT
). It is not a coincidence that the corresponding sql-server operations have the same name. There is no operation that mentions IN
or EXISTS
anywhere - only (anti-)semi joins. Thus, there is no way that a logically-equivalent IN
vs EXISTS
choice could affect performance because there is one and only way, the (anti)semi join execution operation, to get their results.
An example:
Query 1 ( plan )
select * from dt where dt.customer in (select c.code from customer c where c.active=0)
Query 2 ( plan )
select * from dt where exists (select 1 from customer c where c.code=dt.customer and c.active=0)
I wrote and have used this with success.
public class MultiKeyDictionary<K1, K2, V> : Dictionary<K1, Dictionary<K2, V>> {
public V this[K1 key1, K2 key2] {
get {
if (!ContainsKey(key1) || !this[key1].ContainsKey(key2))
throw new ArgumentOutOfRangeException();
return base[key1][key2];
}
set {
if (!ContainsKey(key1))
this[key1] = new Dictionary<K2, V>();
this[key1][key2] = value;
}
}
public void Add(K1 key1, K2 key2, V value) {
if (!ContainsKey(key1))
this[key1] = new Dictionary<K2, V>();
this[key1][key2] = value;
}
public bool ContainsKey(K1 key1, K2 key2) {
return base.ContainsKey(key1) && this[key1].ContainsKey(key2);
}
public new IEnumerable<V> Values {
get {
return from baseDict in base.Values
from baseKey in baseDict.Keys
select baseDict[baseKey];
}
}
}
public class MultiKeyDictionary<K1, K2, K3, V> : Dictionary<K1, MultiKeyDictionary<K2, K3, V>> {
public V this[K1 key1, K2 key2, K3 key3] {
get {
return ContainsKey(key1) ? this[key1][key2, key3] : default(V);
}
set {
if (!ContainsKey(key1))
this[key1] = new MultiKeyDictionary<K2, K3, V>();
this[key1][key2, key3] = value;
}
}
public bool ContainsKey(K1 key1, K2 key2, K3 key3) {
return base.ContainsKey(key1) && this[key1].ContainsKey(key2, key3);
}
}
public class MultiKeyDictionary<K1, K2, K3, K4, V> : Dictionary<K1, MultiKeyDictionary<K2, K3, K4, V>> {
public V this[K1 key1, K2 key2, K3 key3, K4 key4] {
get {
return ContainsKey(key1) ? this[key1][key2, key3, key4] : default(V);
}
set {
if (!ContainsKey(key1))
this[key1] = new MultiKeyDictionary<K2, K3, K4, V>();
this[key1][key2, key3, key4] = value;
}
}
public bool ContainsKey(K1 key1, K2 key2, K3 key3, K4 key4) {
return base.ContainsKey(key1) && this[key1].ContainsKey(key2, key3, key4);
}
}
public class MultiKeyDictionary<K1, K2, K3, K4, K5, V> : Dictionary<K1, MultiKeyDictionary<K2, K3, K4, K5, V>> {
public V this[K1 key1, K2 key2, K3 key3, K4 key4, K5 key5] {
get {
return ContainsKey(key1) ? this[key1][key2, key3, key4, key5] : default(V);
}
set {
if (!ContainsKey(key1))
this[key1] = new MultiKeyDictionary<K2, K3, K4, K5, V>();
this[key1][key2, key3, key4, key5] = value;
}
}
public bool ContainsKey(K1 key1, K2 key2, K3 key3, K4 key4, K5 key5) {
return base.ContainsKey(key1) && this[key1].ContainsKey(key2, key3, key4, key5);
}
}
public class MultiKeyDictionary<K1, K2, K3, K4, K5, K6, V> : Dictionary<K1, MultiKeyDictionary<K2, K3, K4, K5, K6, V>> {
public V this[K1 key1, K2 key2, K3 key3, K4 key4, K5 key5, K6 key6] {
get {
return ContainsKey(key1) ? this[key1][key2, key3, key4, key5, key6] : default(V);
}
set {
if (!ContainsKey(key1))
this[key1] = new MultiKeyDictionary<K2, K3, K4, K5, K6, V>();
this[key1][key2, key3, key4, key5, key6] = value;
}
}
public bool ContainsKey(K1 key1, K2 key2, K3 key3, K4 key4, K5 key5, K6 key6) {
return base.ContainsKey(key1) && this[key1].ContainsKey(key2, key3, key4, key5, key6);
}
}
public class MultiKeyDictionary<K1, K2, K3, K4, K5, K6, K7, V> : Dictionary<K1, MultiKeyDictionary<K2, K3, K4, K5, K6, K7, V>> {
public V this[K1 key1, K2 key2, K3 key3, K4 key4, K5 key5, K6 key6, K7 key7] {
get {
return ContainsKey(key1) ? this[key1][key2, key3, key4, key5, key6, key7] : default(V);
}
set {
if (!ContainsKey(key1))
this[key1] = new MultiKeyDictionary<K2, K3, K4, K5, K6, K7, V>();
this[key1][key2, key3, key4, key5, key6, key7] = value;
}
}
public bool ContainsKey(K1 key1, K2 key2, K3 key3, K4 key4, K5 key5, K6 key6, K7 key7) {
return base.ContainsKey(key1) && this[key1].ContainsKey(key2, key3, key4, key5, key6, key7);
}
}
public class MultiKeyDictionary<K1, K2, K3, K4, K5, K6, K7, K8, V> : Dictionary<K1, MultiKeyDictionary<K2, K3, K4, K5, K6, K7, K8, V>> {
public V this[K1 key1, K2 key2, K3 key3, K4 key4, K5 key5, K6 key6, K7 key7, K8 key8] {
get {
return ContainsKey(key1) ? this[key1][key2, key3, key4, key5, key6, key7, key8] : default(V);
}
set {
if (!ContainsKey(key1))
this[key1] = new MultiKeyDictionary<K2, K3, K4, K5, K6, K7, K8, V>();
this[key1][key2, key3, key4, key5, key6, key7, key8] = value;
}
}
public bool ContainsKey(K1 key1, K2 key2, K3 key3, K4 key4, K5 key5, K6 key6, K7 key7, K8 key8) {
return base.ContainsKey(key1) && this[key1].ContainsKey(key2, key3, key4, key5, key6, key7, key8);
}
}
public class MultiKeyDictionary<K1, K2, K3, K4, K5, K6, K7, K8, K9, V> : Dictionary<K1, MultiKeyDictionary<K2, K3, K4, K5, K6, K7, K8, K9, V>> {
public V this[K1 key1, K2 key2, K3 key3, K4 key4, K5 key5, K6 key6, K7 key7, K8 key8, K9 key9] {
get {
return ContainsKey(key1) ? this[key1][key2, key3, key4, key5, key6, key7, key8, key9] : default(V);
}
set {
if (!ContainsKey(key1))
this[key1] = new MultiKeyDictionary<K2, K3, K4, K5, K6, K7, K8, K9, V>();
this[key1][key2, key3, key4, key5, key6, key7, key8, key9] = value;
}
}
public bool ContainsKey(K1 key1, K2 key2, K3 key3, K4 key4, K5 key5, K6 key6, K7 key7, K8 key8, K9 key9) {
return base.ContainsKey(key1) && this[key1].ContainsKey(key2, key3, key4, key5, key6, key7, key8, key9);
}
}
public class MultiKeyDictionary<K1, K2, K3, K4, K5, K6, K7, K8, K9, K10, V> : Dictionary<K1, MultiKeyDictionary<K2, K3, K4, K5, K6, K7, K8, K9, K10, V>> {
public V this[K1 key1, K2 key2, K3 key3, K4 key4, K5 key5, K6 key6, K7 key7, K8 key8, K9 key9, K10 key10] {
get {
return ContainsKey(key1) ? this[key1][key2, key3, key4, key5, key6, key7, key8, key9, key10] : default(V);
}
set {
if (!ContainsKey(key1))
this[key1] = new MultiKeyDictionary<K2, K3, K4, K5, K6, K7, K8, K9, K10, V>();
this[key1][key2, key3, key4, key5, key6, key7, key8, key9, key10] = value;
}
}
public bool ContainsKey(K1 key1, K2 key2, K3 key3, K4 key4, K5 key5, K6 key6, K7 key7, K8 key8, K9 key9, K10 key10) {
return base.ContainsKey(key1) && this[key1].ContainsKey(key2, key3, key4, key5, key6, key7, key8, key9, key10);
}
}
public class MultiKeyDictionary<K1, K2, K3, K4, K5, K6, K7, K8, K9, K10, K11, V> : Dictionary<K1, MultiKeyDictionary<K2, K3, K4, K5, K6, K7, K8, K9, K10, K11, V>> {
public V this[K1 key1, K2 key2, K3 key3, K4 key4, K5 key5, K6 key6, K7 key7, K8 key8, K9 key9, K10 key10, K11 key11] {
get {
return ContainsKey(key1) ? this[key1][key2, key3, key4, key5, key6, key7, key8, key9, key10, key11] : default(V);
}
set {
if (!ContainsKey(key1))
this[key1] = new MultiKeyDictionary<K2, K3, K4, K5, K6, K7, K8, K9, K10, K11, V>();
this[key1][key2, key3, key4, key5, key6, key7, key8, key9, key10, key11] = value;
}
}
public bool ContainsKey(K1 key1, K2 key2, K3 key3, K4 key4, K5 key5, K6 key6, K7 key7, K8 key8, K9 key9, K10 key10, K11 key11) {
return base.ContainsKey(key1) && this[key1].ContainsKey(key2, key3, key4, key5, key6, key7, key8, key9, key10, key11);
}
}
For the first ten multiples of 5, say
>>> [5*n for n in range(1,10+1)]
[5, 10, 15, 20, 25, 30, 35, 40, 45, 50]
There is no need to install Anaconda again. Conda, the package manager for Anaconda, fully supports separated environments. The easiest way to create an environment for Python 2.7 is to do
conda create -n python2 python=2.7 anaconda
This will create an environment named python2
that contains the Python 2.7 version of Anaconda. You can activate this environment with
source activate python2
This will put that environment (typically ~/anaconda/envs/python2
) in front in your PATH
, so that when you type python
at the terminal it will load the Python from that environment.
If you don't want all of Anaconda, you can replace anaconda
in the command above with whatever packages you want. You can use conda
to install packages in that environment later, either by using the -n python2
flag to conda
, or by activating the environment.
You can save some homemade factorial functions on a separate module, utils.py, and then import them and compare the performance with the predefinite one, in scipy, numpy and math using timeit. In this case I used as external method the last proposed by Stefan Gruenwald:
import numpy as np
def factorial(n):
return reduce((lambda x,y: x*y),range(1,n+1))
Main code (I used a framework proposed by JoshAdel in another post, look for how-can-i-get-an-array-of-alternating-values-in-python):
from timeit import Timer
from utils import factorial
import scipy
n = 100
# test the time for the factorial function obtained in different ways:
if __name__ == '__main__':
setupstr="""
import scipy, numpy, math
from utils import factorial
n = 100
"""
method1="""
factorial(n)
"""
method2="""
scipy.math.factorial(n) # same algo as numpy.math.factorial, math.factorial
"""
nl = 1000
t1 = Timer(method1, setupstr).timeit(nl)
t2 = Timer(method2, setupstr).timeit(nl)
print 'method1', t1
print 'method2', t2
print factorial(n)
print scipy.math.factorial(n)
Which provides:
method1 0.0195569992065
method2 0.00638914108276
93326215443944152681699238856266700490715968264381621468592963895217599993229915608941463976156518286253697920827223758251185210916864000000000000000000000000
93326215443944152681699238856266700490715968264381621468592963895217599993229915608941463976156518286253697920827223758251185210916864000000000000000000000000
Process finished with exit code 0
Your data
is a string of '[{}]'
at that point in time, you can eval
it like so:
function(data) {
data = eval( '(' + data + ')' )
}
However this method is far from secure, this will be a bit more work but the best practice is to parse it with Crockford's JSON parser: https://github.com/douglascrockford/JSON-js
Another method would be $.getJSON
and you'll need to set the dataType
to json for a pure jQuery reliant method.
I believe VS2010 to be right this time, and I'd check if I had the standard handy, but currently I don't.
Now, it's exactly like the error message says: You can't capture stuff outside of the enclosing scope of the lambda.† grid
is not in the enclosing scope, but this
is (every access to grid
actually happens as this->grid
in member functions). For your usecase, capturing this
works, since you'll use it right away and you don't want to copy the grid
auto lambda = [this](){ std::cout << grid[0][0] << "\n"; }
If however, you want to store the grid and copy it for later access, where your puzzle
object might already be destroyed, you'll need to make an intermediate, local copy:
vector<vector<int> > tmp(grid);
auto lambda = [tmp](){}; // capture the local copy per copy
† I'm simplifying - Google for "reaching scope" or see §5.1.2 for all the gory details.
For Mysql you can do simple. SHOW TABLES;
First add Dimension component:
import { AppRegistry, Text, View,Dimensions } from 'react-native';
Second define Variables:
var height = Dimensions.get('window').height;
var width = Dimensions.get('window').width;
Third put it in your stylesheet:
textOutputView: {
flexDirection:'row',
paddingTop:20,
borderWidth:1,
borderColor:'red',
height:height*0.25,
backgroundColor:'darkgrey',
justifyContent:'flex-end'
}
Actually in this example I wanted to make responsive view and wanted to view only 0.25 of the screen view so I multiplied it with 0.25, if you wanted 100% of the screen don't multiply it with any thing like this:
textOutputView: {
flexDirection:'row',
paddingTop:20,
borderWidth:1,
borderColor:'red',
height:height,
backgroundColor:'darkgrey',
justifyContent:'flex-end'
}
The compiler won't optimise away the indexer (i.e. if you use row["value"] twice), so yes it is slightly quicker to do:
object value = row["value"];
and then use value twice; using .GetType() risks issues if it is null...
DBNull.Value
is actually a singleton, so to add a 4th option - you could perhaps use ReferenceEquals - but in reality, I think you're worrying too much here... I don't think the speed different between "is", "==" etc is going to be the cause of any performance problem you are seeing. Profile your entire code and focus on something that matters... it won't be this.
One another point to note down is in MaxLength attribute you can only provide max required range not a min required range. While in StringLength you can provide both.
Try this
Sub Txt2Col()
Dim rng As Range
Set rng = [C7]
Set rng = Range(rng, Cells(Rows.Count, rng.Column).End(xlUp))
rng.TextToColumns Destination:=rng, DataType:=xlDelimited, ' rest of your settings
Update: button click event to act on another sheet
Private Sub CommandButton1_Click()
Dim rng As Range
Dim sh As Worksheet
Set sh = Worksheets("Sheet2")
With sh
Set rng = .[C7]
Set rng = .Range(rng, .Cells(.Rows.Count, rng.Column).End(xlUp))
rng.TextToColumns Destination:=rng, DataType:=xlDelimited, _
TextQualifier:=xlDoubleQuote, _
ConsecutiveDelimiter:=False, _
Tab:=False, _
Semicolon:=False, _
Comma:=True,
Space:=False,
Other:=False, _
FieldInfo:=Array(Array(1, xlGeneralFormat), Array(2, xlGeneralFormat), Array(3, xlGeneralFormat)), _
TrailingMinusNumbers:=True
End With
End Sub
Note the .
's (eg .Range
) they refer to the With
statement object
You can dump the value in hex using UTL_RAW.CAST_TO_RAW(UTL_RAW.CAST_TO_VARCHAR2())
.
SELECT b FROM foo;
-- (BLOB)
SELECT UTL_RAW.CAST_TO_RAW(UTL_RAW.CAST_TO_VARCHAR2(b))
FROM foo;
-- 1F8B080087CDC1520003F348CDC9C9D75128CF2FCA49D1E30200D7BBCDFC0E000000
This is handy because you this is the same format used for inserting into BLOB columns:
CREATE GLOBAL TEMPORARY TABLE foo (
b BLOB);
INSERT INTO foo VALUES ('1f8b080087cdc1520003f348cdc9c9d75128cf2fca49d1e30200d7bbcdfc0e000000');
DESC foo;
-- Name Null Type
-- ---- ---- ----
-- B BLOB
However, at a certain point (2000 bytes?) the corresponding hex string exceeds Oracle’s maximum string length. If you need to handle that case, you’ll have to combine How do I get textual contents from BLOB in Oracle SQL with the documentation for DMBS_LOB.SUBSTR
for a more complicated approach that will allow you to see substrings of the BLOB.
A lot of these answers are super inflated and from what I can find, the answer isn't all that difficult to understand.
You can use plt.ion()
if you want, but I found using plt.draw()
just as effective
For my specific project I'm plotting images, but you can use plot()
or scatter()
or whatever instead of figimage()
, it doesn't matter.
plt.figimage(image_to_show)
plt.draw()
plt.pause(0.001)
Or
fig = plt.figure()
...
fig.figimage(image_to_show)
fig.canvas.draw()
plt.pause(0.001)
If you're using an actual figure.
I used @krs013, and @Default Picture's answers to figure this out
Hopefully this saves someone from having launch every single figure on a separate thread, or from having to read these novels just to figure this out
To String
import strings
stringFiles := strings.Join(fileSlice[:], ",")
Back to Slice again
import strings
fileSlice := strings.Split(stringFiles, ",")
Note that on some devices your code wont work without android:priority="1000" in intent filter:
<receiver android:name=".listener.SmsListener">
<intent-filter android:priority="1000">
<action android:name="android.provider.Telephony.SMS_RECEIVED" />
</intent-filter>
</receiver>
And here is some optimizations:
public class SmsListener extends BroadcastReceiver{
@Override
public void onReceive(Context context, Intent intent) {
if (Telephony.Sms.Intents.SMS_RECEIVED_ACTION.equals(intent.getAction())) {
for (SmsMessage smsMessage : Telephony.Sms.Intents.getMessagesFromIntent(intent)) {
String messageBody = smsMessage.getMessageBody();
}
}
}
}
Note:
The value must be an integer, such as "100". Higher numbers have a higher priority. The default value is 0. The value must be greater than -1000 and less than 1000.
You can get a public URL for your server running on a specific port on localhost.
At my work place I could access the local server by using the local IP address of my machine in the app, as most of the other answers suggest. But at home I wasn't able to do that for some reason. After trying many answers and spending many hours, I came across https://ngrok.com. It is pretty straight forward. Just download it from within the folder do:
ngrok portnumber
( from command prompt in windows)
./ngrok portnumber
(from terminal in linux)
This will give you a public URL for your local server running on that port number on localhost. You can include in your app and debug it using that URL.
You can securely expose a local web server to the internet and capture all traffic for detailed inspection. You can share the URL with your colleague developer also who might be working remotely and can debug the App/Server interaction.
Hope this saves someone's time someday.
This can be done very elegantly with Ray.
To parallelize your example, you'd need to define your functions with the @ray.remote
decorator, and then invoke them with .remote
.
import ray
ray.init()
# Define the functions.
@ray.remote
def solve1(a):
return 1
@ray.remote
def solve2(b):
return 2
# Start two tasks in the background.
x_id = solve1.remote(0)
y_id = solve2.remote(1)
# Block until the tasks are done and get the results.
x, y = ray.get([x_id, y_id])
There are a number of advantages of this over the multiprocessing module.
These function calls can be composed together, e.g.,
@ray.remote
def f(x):
return x + 1
x_id = f.remote(1)
y_id = f.remote(x_id)
z_id = f.remote(y_id)
ray.get(z_id) # returns 4
Note that Ray is a framework I've been helping develop.
While unzipping will reveal the resources, the AndroidManifest.xml
will be encoded. apktool
can – among lots of other things – also decode this file.
To decode the application App.apk
into the folder App
, run
apktool decode App.apk App
apktool
is not included in the official Android SDK, but available using most packet repositories.
I guess you should start with the basics from w3
https://www.w3schools.com/cssref/css3_pr_text-overflow.asp
div {
white-space: nowrap;
overflow: hidden;
text-overflow: ellipsis;
}
Doesnn't care which date boundry is which.
Math.abs(date1.getTime() - date2.getTime()) ==
Math.abs(date1.getTime() - dateBetween.getTime()) + Math.abs(dateBetween.getTime() - date2.getTime());
You can also use git diff HEAD file
to show the diff for a specific file.
See the EXAMPLE
section under git-diff(1)
your file is named Main.java where it should be
WeatherArray.java
In case you missed the configuration at the Project Structure(File -> Project Structure), just reconfigure it like below:
Enjoy coding J
I think that the above answers missed the key point.
Let's have a class with a method:
class A(object):
def m(self):
pass
Now, let's play with it in ipython:
In [2]: A.m
Out[2]: <unbound method A.m>
Ok, so m() somehow becomes an unbound method of A. But is it really like that?
In [5]: A.__dict__['m']
Out[5]: <function m at 0xa66b8b4>
It turns out that m() is just a function, reference to which is added to A class dictionary - there's no magic. Then why A.m gives us an unbound method? It's because the dot is not translated to a simple dictionary lookup. It's de facto a call of A.__class__.__getattribute__(A, 'm'):
In [11]: class MetaA(type):
....: def __getattribute__(self, attr_name):
....: print str(self), '-', attr_name
In [12]: class A(object):
....: __metaclass__ = MetaA
In [23]: A.m
<class '__main__.A'> - m
<class '__main__.A'> - m
Now, I'm not sure out of the top of my head why the last line is printed twice, but still it's clear what's going on there.
Now, what the default __getattribute__ does is that it checks if the attribute is a so-called descriptor or not, i.e. if it implements a special __get__ method. If it implements that method, then what is returned is the result of calling that __get__ method. Going back to the first version of our A class, this is what we have:
In [28]: A.__dict__['m'].__get__(None, A)
Out[28]: <unbound method A.m>
And because Python functions implement the descriptor protocol, if they are called on behalf of an object, they bind themselves to that object in their __get__ method.
Ok, so how to add a method to an existing object? Assuming you don't mind patching class, it's as simple as:
B.m = m
Then B.m "becomes" an unbound method, thanks to the descriptor magic.
And if you want to add a method just to a single object, then you have to emulate the machinery yourself, by using types.MethodType:
b.m = types.MethodType(m, b)
By the way:
In [2]: A.m
Out[2]: <unbound method A.m>
In [59]: type(A.m)
Out[59]: <type 'instancemethod'>
In [60]: type(b.m)
Out[60]: <type 'instancemethod'>
In [61]: types.MethodType
Out[61]: <type 'instancemethod'>
Specifications:
Articles:
Tutorial:
Libraries:
Why not simply set it up as a Scheduled Task that is scheduled to run at start up?
For me, this works:
function transferAllStyles(elemFrom, elemTo)
{
var prop;
for (prop in elemFrom.style)
if (typeof prop == "string")
try { elemTo.style[prop] = elemFrom.style[prop]; }
catch (ex) { /* don't care */ }
}
explode('.', $string)
If you know your string has a fixed number of components you could use something like
list($a, $b) = explode('.', 'object.attribute');
echo $a;
echo $b;
Prints:
object
attribute
In pyspark 2.4.4
1) group_by_dataframe.count().filter("`count` >= 10").orderBy('count', ascending=False)
2) from pyspark.sql.functions import desc
group_by_dataframe.count().filter("`count` >= 10").orderBy('count').sort(desc('count'))
No need to import in 1) and 1) is short & easy to read,
So I prefer 1) over 2)
In Rails 4.1.0, I have faced problem with saving latitude and longitude to MySql database. It can't save large fraction number with float data type. And I change the data type to decimal and working for me.
def change change_column :cities, :latitude, :decimal, :precision => 15, :scale => 13 change_column :cities, :longitude, :decimal, :precision => 15, :scale => 13 end
If you are on Windows, here is a PowerShell script that will print the 10 largest files in your repository:
$revision_objects = git rev-list --objects --all;
$files = $revision_objects.Split() | Where-Object {$_.Length -gt 0 -and $(Test-Path -Path $_ -PathType Leaf) };
$files | Get-Item -Force | select fullname, length | sort -Descending -Property Length | select -First 10
<% str="<h1> Test </h1>" %>
result: < h1 > Test < /h1 >
<%= CGI.unescapeHTML(str).html_safe %>
A framework has some functions that you may need. you maybe need some sort of arrays that have inbuilt sorting mechanisms. Or maybe you need a window where you want to place some controls, all that you can find in a framework. it's a kind of WORK that spans a FRAME around your own work.
EDIT:
OK I m about to dig what you guys were trying to tell me ;) you perhaps havent noticed the information between the lines "WORK that spans a FRAME around ..."
before this is getting fallen deeper n deeper. I try to give a floor to it hoping you're gracfully:
a good explanation to the question "Difference between a Library and a Framework" I found here
http://ifacethoughts.net/2007/06/04/difference-between-a-library-and-a-framework/
Using ng-pattern
on the text field:
<input type="text" ng-model="myText" name="inputName" ng-pattern="onlyNumbers">
Then include this on your controller
$scope.onlyNumbers = /^\d+$/;
Similar to other answers in syntax but it should be known that you can also pass a md5 of the password so you are not transmitting a plain text password.
Here are a few scenarios of unintended consequences of altering a users password in plain text.
log_statement = ddl
or higher, then your plain text password will show up in your error logs.
With that said here is how we can alter a user's password by building an md5 of the password.
ex: "md5"+md5(password + username)
In bash:
~$ echo -n "passwordStringUserName" | md5sum | awk '{print "md5"$1}'
md5d6a35858d61d85e4a82ab1fb044aba9d
[PSCredential] $Credential = Get-Credential
$StringBuilder = New-Object System.Text.StringBuilder
$null = $StringBuilder.Append('md5');
[System.Security.Cryptography.HashAlgorithm]::Create('md5').ComputeHash([System.Text.Encoding]::ASCII.GetBytes(((ConvertFrom-SecureStringToPlainText -SecureString $Credential.Password) + $Credential.UserName))) | ForEach-Object {
$null = $StringBuilder.Append($_.ToString("x2"))
}
$StringBuilder.ToString();
## OUTPUT
md5d6a35858d61d85e4a82ab1fb044aba9d
ALTER USER
command will look like ALTER USER UserName WITH PASSWORD 'md5d6a35858d61d85e4a82ab1fb044aba9d';
The password is always stored encrypted in the system catalogs. The ENCRYPTED keyword has no effect, but is accepted for backwards compatibility. The method of encryption is determined by the configuration parameter password_encryption. If the presented password string is already in MD5-encrypted or SCRAM-encrypted format, then it is stored as-is regardless of password_encryption (since the system cannot decrypt the specified encrypted password string, to encrypt it in a different format). This allows reloading of encrypted passwords during dump/restore.
Here is my solution:
DataTable datatable = (DataTable)dataset.datatablename;
Try SELECT CAST(field1 AS DECIMAL(10,2)) field1
and replace 10,2
with whatever precision you need.
By default, Maven doesn't bundle dependencies in the JAR file it builds, and you're not providing them on the classpath when you're trying to execute your JAR file at the command-line. This is why the Java VM can't find the library class files when trying to execute your code.
You could manually specify the libraries on the classpath with the -cp
parameter, but that quickly becomes tiresome.
A better solution is to "shade" the library code into your output JAR file. There is a Maven plugin called the maven-shade-plugin to do this. You need to register it in your POM, and it will automatically build an "uber-JAR" containing your classes and the classes for your library code too when you run mvn package
.
To simply bundle all required libraries, add the following to your POM:
<project>
...
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>3.2.4</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
...
</project>
Once this is done, you can rerun the commands you used above:
$ mvn package
$ java -cp target/bil138_4-0.0.1-SNAPSHOT.jar tr.edu.hacettepe.cs.b21127113.bil138_4.App
If you want to do further configuration of the shade plugin in terms of what JARs should be included, specifying a Main-Class for an executable JAR file, and so on, see the "Examples" section on the maven-shade-plugin site.
This should do it
old_string = "this is going to have a full stop. some written sstuff!"
k = old_string.rfind(".")
new_string = old_string[:k] + ". - " + old_string[k+1:]
Whenever possible one should avoid culture specific date/time literals.
There are some secure formats to provide a date/time as literal:
All examples for 2016-09-15 17:30:00
{ts'2016-09-15 17:30:00'}
--Time Stamp{d'2016-09-15'}
--Date only{t'17:30:00'}
--Time only'2016-09-15T17:30:00'
--be aware of the T
in the middle!'20160915'
--only for pure dateSQL-Server is well know to do things in an order of execution one might not have expected. Your written statement looks like the conversion is done before some type related action takes place, but the engine decides - why ever - to do the conversion in a later step.
Here is a great article explaining this with examples: Rusano.com: "t-sql-functions-do-no-imply-a-certain-order-of-execution" and here is the related question.
As amaud576875 said, the \r
escape sequence signifies a carriage-return, similar to pressing the Enter key. However, I'm not sure how you get "o world"; you should (and I do) get "my first hello world" and then a new line. Depending on what operating system you're using (I'm using Mac) you might want to use a \n
instead of a \r
.
Yes - just do it this way:
WITH DependencedIncidents AS
(
....
),
lalala AS
(
....
)
You don't need to repeat the WITH
keyword
If you look in your installation's bin directory you will see catalina.sh or .bat scripts. If you look in these you will see that they run a setenv.sh or setenv.bat script respectively, if it exists, to set environment variables. The relevant environment variables are described in the comments at the top of catalina.sh/bat. To use them create, for example, a file $CATALINA_HOME/bin/setenv.sh with contents
export JAVA_OPTS="-server -Xmx512m"
For Windows you will need, in setenv.bat, something like
set JAVA_OPTS=-server -Xmx768m
Original answer here
After you run startup.bat
, you can easily confirm the correct settings have been applied provided you have turned @echo
on somewhere in your catatlina.bat
file (a good place could be immediately after echo Using CLASSPATH: "%CLASSPATH%"
):
The echo
solution adds new lines whenever IFS
breaks the input stream. @fgm's answer can be modified a bit:
cat "${1:-/dev/stdin}" > "${2:-/dev/stdout}"
You have to rely on '#' but to make the task easier in vi you can perform the following (press escape first):
:10,20 s/^/#
with 10 and 20 being the start and end line numbers of the lines you want to comment out
and to undo when you are complete:
:10,20 s/^#//
std::size_t s = 1024;
std::cout << s; // or any other kind of stream like stringstream!
At of all the solution i have tried no one work as expected, i study heroku by default the .env File should maintain the convention PORT, the process.env.PORT, heroku by default will look for the Keyword PORT.
Cancel any renaming such as APP_PORT= instead use PORT= in your env file.
I've tried all examples, posted here, but they do not work without extra CSS. Try this:
<a href="http://www.google.com"><button type="button" class="btn btn-success">Google</button></a>
Works perfectly without any extra CSS.
When you are trying to visit a local filename through firefox browser, you have to force the file:\\\
protocol (http://en.wikipedia.org/wiki/File_URI_scheme) or else firefox will encode your space TWICE. Change the html snippet from this:
<img src="C:\Documents and Settings\screenshots\Image01.png"/>
to this:
<img src="file:\\\C:\Documents and Settings\screenshots\Image01.png"/>
or this:
<img src="file://C:\Documents and Settings\screenshots\Image01.png"/>
Then firefox is notified that this is a local filename, and it renders the image correctly in the browser, correctly encoding the string once.
Helpful link: http://support.mozilla.org/en-US/questions/900466
In PostgreSQL
, you can do:
SELECT *
FROM (
VALUES
(1, 2),
(3, 4)
) AS q (col1, col2)
In other systems, just use UNION ALL
:
SELECT 1 AS col1, 2 AS col2
-- FROM dual
-- uncomment the line above if in Oracle
UNION ALL
SELECT 3 AS col1, 3 AS col2
-- FROM dual
-- uncomment the line above if in Oracle
In Oracle
, SQL Server
and PostgreSQL
, you also can generate recordsets of arbitrary number of rows (providable with an external variable):
SELECT level
FROM dual
CONNECT BY
level <= :n
in Oracle
,
WITH q (l) AS
(
SELECT 1
UNION ALL
SELECT l + 1
FROM q
WHERE l < @n
)
SELECT l
FROM q
-- OPTION (MAXRECURSION 0)
-- uncomment line above if @n >= 100
in SQL Server
,
SELECT l
FROM generate_series(1, $n) l
in PostgreSQL
.
In Ruby, methods can check to see if they were called in such a way that a block was provided in addition to the normal arguments. Typically this is done using the block_given?
method but you can also refer to the block as an explicit Proc by prefixing an ampersand (&
) before the final argument name.
If a method is invoked with a block then the method can yield
control to the block (call the block) with some arguments, if needed. Consider this example method that demonstrates:
def foo(x)
puts "OK: called as foo(#{x.inspect})"
yield("A gift from foo!") if block_given?
end
foo(10)
# OK: called as foo(10)
foo(123) {|y| puts "BLOCK: #{y} How nice =)"}
# OK: called as foo(123)
# BLOCK: A gift from foo! How nice =)
Or, using the special block argument syntax:
def bar(x, &block)
puts "OK: called as bar(#{x.inspect})"
block.call("A gift from bar!") if block
end
bar(10)
# OK: called as bar(10)
bar(123) {|y| puts "BLOCK: #{y} How nice =)"}
# OK: called as bar(123)
# BLOCK: A gift from bar! How nice =)
In swift 3
let nextVC = self.storyboard?.instantiateViewController(withIdentifier: "NextViewController") as! NextViewController
self.navigationController?.pushViewController(nextVC, animated: true)
Use TextSwitcher
(for nice text transition animation) and timer instead.
you need to include the Wordpress loop in your search.php this is example
search.php template file:
<?php get_header(); ?>
<?php
$s=get_search_query();
$args = array(
's' =>$s
);
// The Query
$the_query = new WP_Query( $args );
if ( $the_query->have_posts() ) {
_e("<h2 style='font-weight:bold;color:#000'>Search Results for: ".get_query_var('s')."</h2>");
while ( $the_query->have_posts() ) {
$the_query->the_post();
?>
<li>
<a href="<?php the_permalink(); ?>"><?php the_title(); ?></a>
</li>
<?php
}
}else{
?>
<h2 style='font-weight:bold;color:#000'>Nothing Found</h2>
<div class="alert alert-info">
<p>Sorry, but nothing matched your search criteria. Please try again with some different keywords.</p>
</div>
<?php } ?>
<?php get_sidebar(); ?>
<?php get_footer(); ?>
You need to declare @font-face
like this in your stylesheet
@font-face {
font-family: 'Awesome-Font';
font-style: normal;
font-weight: 400;
src: local('Awesome-Font'), local('Awesome-Font-Regular'), url(path/Awesome-Font.woff) format('woff');
}
Now if you want to apply this font to a paragraph simply use it like this..
p {
font-family: 'Awesome-Font', Arial;
}
Have you tried SELECT DISTINCT ?
INSERT INTO destTable
SELECT DISTINCT * FROM srcTable