IE8/9 render the non-breaking hyphen mentioned in CanSpice's answer longer than a typical hyphen. It is the length of an en-dash instead of a typical hyphen. This display difference was a deal breaker for me.
As I could not use the CSS answer specified by Deb I instead opted to use no break tags.
<nobr>e-mail</nobr>
In addition I found a specific scenario that caused IE8/9 to break on a hyphen.
IE renders it like this.
The following code reproduces the problem pictured above. I had to use a meta tag to force rendering to IE9 as IE10 has fixed the issue. No fiddle because it does not support meta tags.
<!DOCTYPE html>
<html lang="en">
<head>
<meta http-equiv="X-UA-Compatible" content="IE=9" />
<meta charset="utf-8"/>
<style>
body { padding: 20px; }
div { width: 300px; border: 1px solid gray; }
</style>
</head>
<body>
<div>
<p>If there is a - and words are separated by the whitespace code &nbsp; then IE will wrap on the dash.</p>
</div>
</body>
</html>
I answered something similar here: LaTeX breaking up too many words
I said:
you should set a hyphenation penalty somewhere in your preamble:
\hyphenpenalty=750
The value of 750 suited my needs for a two column layout on letter paper (8.5x11 in) with a 12 pt font. Adjust the value to suit your needs. The higher the number, the less hyphenation will occur. You may also want to have a look at the hyphenatpackage, it provides a bit more than just hyphenation penalty
For recent SQL:
select * from v$sql
For history:
select * from dba_hist_sqltext
#ck-button:hover {
background:red;
}
Fiddle: http://jsfiddle.net/zAFND/4/
It it possible to do in the admin, but there is not a very straightforward way to it. Also, I would like to advice to keep most business logic in your models, so you won't be dependent on the Django Admin.
Maybe it would be easier (and maybe even better) if you have the two seperate fields on your model. Then add a method on your model that combines them.
For example:
class MyModel(models.model):
field1 = models.CharField(max_length=10)
field2 = models.CharField(max_length=10)
def combined_fields(self):
return '{} {}'.format(self.field1, self.field2)
Then in the admin you can add the combined_fields()
as a readonly field:
class MyModelAdmin(models.ModelAdmin):
list_display = ('field1', 'field2', 'combined_fields')
readonly_fields = ('combined_fields',)
def combined_fields(self, obj):
return obj.combined_fields()
If you want to store the combined_fields
in the database you could also save it when you save the model:
def save(self, *args, **kwargs):
self.field3 = self.combined_fields()
super(MyModel, self).save(*args, **kwargs)
There is a simple method for deleting selected items, and all these people are going for a hard method:
lstYOURVARIABLE.Items.Remove(lstYOURVARIABLE.SelectedItem)
I used this in Visual Basic mode on Visual Studio.
Whenever you use
export someobject
and someobject is
{
"prop1":"Property1",
"prop2":"Property2",
}
the above you can import anywhere using import
or module.js
and there you can use someobject. This is not a restriction that someobject will be an object only it can be a function too, a class or an object.
When you say
new Object()
like you said
new Vue({
el: '#app',
data: []
)}
Here you are initiating an object of class Vue.
I hope my answer explains your query in general and more explicitly.
Go to the first line from which you would like to delete, and press the keys dG
In order to represent a single digit in the form of a regular expression you can use either:
[0-9] or \d
In order to specify how many times the number appears you would add
[0-9]*: the star means there are zero or more digits
[0-9]{2}: {N} means N digits
[0-9]{0,2}: {N,M} N digits or M digits
[0-9]{0-9}: {N-M} N digits to M digits. Note: M can be left blank for an infinite representation
Lets say I want to represent a number between 1 and 99 I would express it as such:
[0-9]{1-2} or [0-9]{1,2} or \d{1-2} or \d{1,2}
Or lets say we were working with binary display, displaying a byte size, we would want our digits to be between 0 and 1 and length of a byte size, 8, so we would represent it as follows:
[0-1]{8} representation of a binary byte
Then if you want to add a , or a . symbol you would use:
\, or \. or you can use [.] or [,]
You can also state a selection between possible values as such
[.,] means either a dot or a comma symbol
And you just need to concatenate the pieces together, so in the case where you want to represent a 1 or 2 digit number followed by either a comma or a period and followed by two more digits you would express it as follows: >
[0-9]{1,2}[.,]\d{1-2}
Also note that regular expression strings inside C++ strings must be double-back-slashed so every \ becomes \\
int rows, columns;
/* initialize rows and columns to the desired value */
arr = (int**)malloc(rows*sizeof(int*));
for(i=0;i<rows;i++)
{
arr[i] = (int*)malloc(cols*sizeof(int));
}
If you are in Excel VBA you can use the following.
Application.Wait(Now + TimeValue("0:00:01"))
(The time string should look like H:MM:SS.)
Runescape by Jagex is written in Java, the "video game" tag might not specifically apply it being an on-line game, but it does have a decent following.
I'm recombinging the ideas of some other answers here and this answer on another thread into a Try-style extension method. This has a benefit if you want an extension method, yet avoiding an exception upon timeout.
public static async Task<bool> TryWithTimeoutAfter<TResult>(this Task<TResult> task,
TimeSpan timeout, Action<TResult> successor)
{
using var timeoutCancellationTokenSource = new CancellationTokenSource();
var completedTask = await Task.WhenAny(task, Task.Delay(timeout, timeoutCancellationTokenSource.Token))
.ConfigureAwait(continueOnCapturedContext: false);
if (completedTask == task)
{
timeoutCancellationTokenSource.Cancel();
// propagate exception rather than AggregateException, if calling task.Result.
var result = await task.ConfigureAwait(continueOnCapturedContext: false);
successor(result);
return true;
}
else return false;
}
async Task Example(Task<string> task)
{
string result = null;
if (await task.TryWithTimeoutAfter(TimeSpan.FromSeconds(1), r => result = r))
{
Console.WriteLine(result);
}
}
I had the same issue, and did this to fix it:
In command prompt
pip install Pillow ##
Ensure that you use
from PIL import Image
I
in Image
has to be capital. That was the issue in my case.
From oracle Sql developer, execute the below in sql worksheet:
create user lctest identified by lctest;
grant dba to lctest;
then right click on "Oracle connection" -> new connection, then make everything lctest from connection name to user name password. Test connection shall pass. Then after connected you will see the schema.
I spent some time trying to find a nice function to wrap a solution. Anyway, ended up with this which I feel is a better solutions when loading multiple content on a single page or across a site.
Function:
function ifViewLoadContent(elem, LoadContent)
{
var top_of_element = $(elem).offset().top;
var bottom_of_element = $(elem).offset().top + $(elem).outerHeight();
var bottom_of_screen = $(window).scrollTop() + window.innerHeight;
var top_of_screen = $(window).scrollTop();
if((bottom_of_screen > top_of_element) && (top_of_screen < bottom_of_element)){
if(!$(elem).hasClass("ImLoaded")) {
$(elem).load(LoadContent).addClass("ImLoaded");
}
}
else {
return false;
}
}
You can then call the function using window on scroll (for example, you could also bind it to a click etc. as I also do, hence the function):
To use:
$(window).scroll(function (event) {
ifViewLoadContent("#AjaxDivOne", "someFile/somecontent.html");
ifViewLoadContent("#AjaxDivTwo", "someFile/somemorecontent.html");
});
This approach should also work for scrolling divs etc. I hope it helps, in the question above you could use this approach to load your content in sections, maybe append and thereby dribble feed all that image data rather than bulk feed.
I used this approach to reduce the overhead on https://www.taxformcalculator.com. It died the trick, if you look at the site and inspect element etc. you can see impact on page load in Chrome (as an example).
If you use an array to back the binary tree, you can determine the next node algebraically. if i
is a node, then its children can be found at 2i + 1
(for the left node) and 2i + 2
(for the right node). A node's next neighbor is given by i + 1
, unless i
is a power of 2
Here's pseudocode for a very naive implementation of breadth first search on an array backed binary search tree. This assumes a fixed size array and therefore a fixed depth tree. It will look at parentless nodes, and could create an unmanageably large stack.
bintree-bfs(bintree, elt, i)
if (i == LENGTH)
return false
else if (bintree[i] == elt)
return true
else
return bintree-bfs(bintree, elt, i+1)
The blocksize is usually selected to maximize the "occupancy". Search on CUDA Occupancy for more information. In particular, see the CUDA Occupancy Calculator spreadsheet.
It seems that when this error appears it is an indication that the selenium-java plugin for maven is out-of-date.
Changing the version in the pom.xml should fix the problem
Same solutions as Python urllib2 Basic Auth Problem apply.
see https://stackoverflow.com/a/24048852/1733117; you can subclass urllib2.HTTPBasicAuthHandler
to add the Authorization
header to each request that matches the known url.
class PreemptiveBasicAuthHandler(urllib2.HTTPBasicAuthHandler):
'''Preemptive basic auth.
Instead of waiting for a 403 to then retry with the credentials,
send the credentials if the url is handled by the password manager.
Note: please use realm=None when calling add_password.'''
def http_request(self, req):
url = req.get_full_url()
realm = None
# this is very similar to the code from retry_http_basic_auth()
# but returns a request object.
user, pw = self.passwd.find_user_password(realm, url)
if pw:
raw = "%s:%s" % (user, pw)
auth = 'Basic %s' % base64.b64encode(raw).strip()
req.add_unredirected_header(self.auth_header, auth)
return req
https_request = http_request
Regex to the rescue!
import re
s = re.sub('[^0-9a-zA-Z]+', '*', s)
Example:
>>> re.sub('[^0-9a-zA-Z]+', '*', 'h^&ell`.,|o w]{+orld')
'h*ell*o*w*orld'
F5 is a standard shortcut to run a macro in VBA editor. I don't think you can add a shortcut key in editor itself. If you want to run the macro from excel, you can assign a shortcut from there.
In excel press alt+F8 to open macro dialog box. select the macro for which you want to assign shortcut key and click options. there you can assign a shortcut to the macro.
Support, unfortunately, is brutal at best. Here's a post on the topic:
https://www.campaignmonitor.com/blog/email-marketing/2013/02/embedded-images-in-html-email/
And the post content:
This script will reinstall all packages of a project without messing up dependencies or installing dependencies that may have been intentianlyz removed. (More for their part package developers.)
Update-Package -Reinstall -ProjectName Proteus.Package.LinkedContent -IgnoreDependencies
If the file share is not open to everybody you will need to serve it up in the background from the file system via the web server.
You can use something like this "ASP.Net Serve File For Download" example (archived copy of 2).
You need to escape "
, so it won't be interpreted as end of string. Use \
to escape it:
echo "<script>$('#edit_errors').html('<h3><em><font color=\"red\">Please Correct Errors Before Proceeding</font></em></h3>')</script>";
Read more: strings and escape sequences
The accepted answer doesn't create a name-only attribute anymore (as of September 2017).
You should use JQuery prop() method to create name-only attributes.
$(body).prop('data-body', true)
You have copy this sample code from Here,right?
now, as you can see there property
file they have define, have you done same thing?
if not then add below code in your project with property file for log4j
So the content of log4j.properties file would be as follows:
# Define the root logger with appender file
log = /usr/home/log4j
log4j.rootLogger = DEBUG, FILE
# Define the file appender
log4j.appender.FILE=org.apache.log4j.FileAppender
log4j.appender.FILE.File=${log}/log.out
# Define the layout for file appender
log4j.appender.FILE.layout=org.apache.log4j.PatternLayout
log4j.appender.FILE.layout.conversionPattern=%m%n
make changes as per your requirement like log
path
There is not an equivalent statement for export in Windows Command Prompt. In Windows the environment is copied so when you exit from the session (from a called command prompt or from an executable that set a variable) the variable in Windows get lost. You can set it in user registry or in machine registry via setx but you won't see it if you not start a new command prompt.
Go online before starting android studio. Then go file->New project Follow onscreen steps. Then wait It will download the necessary files over internet. And that should fix it.
You can do a simple global install to run it from anywhere
curl -sS https://getcomposer.org/installer | php
mv composer.phar /usr/local/bin/composer
The https://getcomposer.org/doc/00-intro.md#globally website recommends this way. Worked well on Ubuntu 14.04 no problem.
This way you don't need to do as an example php compomser.phar show
, you just do composer show
, in any directory you are working with.
Late to the party, but if you don't want to expose environment variables, I guess it's easier to do something like this:
RUN echo 1 > /tmp/__var_1
RUN echo `cat /tmp/__var_1`
RUN rm -f /tmp/__var_1
I ended up doing it because we host private npm packages in aws codeartifact:
RUN aws codeartifact get-authorization-token --output text > /tmp/codeartifact.token
RUN npm config set //company-123456.d.codeartifact.us-east-2.amazonaws.com/npm/internal/:_authToken=`cat /tmp/codeartifact.token`
RUN rm -f /tmp/codeartifact.token
And here ARG
cannot work and i don't want to use ENV
because i don't want to expose this token to anything else
I faced with the problem like this.
The problem was that I added the public key without '-----BEGIN PUBLIC KEY-----' at the beginning and without '-----END PUBLIC KEY-----'.
So it causes the error.
Initially, my public key was like this:
-----BEGIN PUBLIC KEY-----
WnsbGUXbb0GbJSCwCBAhrzT0s2KMRyqqS7QBiIG7t3H2Qtmde6UoUIcTTPJgv71
......
oNLcaK2wKKyRdcROK7ZTSCSMsJpAFOY
-----END PUBLIC KEY-----
But I used just this part:
WnsbGUXb+b0GbJSCwCBAhrzT0s2KMRyqqS7QBiIG7t3H2Qtmde6UoUIcTTPJgv71
......
oNLcaK2w+KKyRdcROK7ZTSCSMsJpAFOY
var d = new moment();
var startMonth = d.clone().startOf('month');
var endMonth = d.clone().endOf('month');
console.log(startMonth, endMonth);
it's very simple getting a name:
$('[name=elementname]');
http://www.electrictoolbox.com/jquery-form-elements-by-name/ (google search: get element by name jQuery - first result)
NOTE: Not 100% Cross Browser
Check browser compatibility @ http://caniuse.com/#search=FileReader
as you will see people have had issues with the not so common browsers, But this could come down to the version of the browser.. I always recommend using something like caniuse to see what generation of browser is supported... This is only a working answer for the user, not a final copy and paste code for people to just use..
The Fiddle: http://jsfiddle.net/d2atnbrt/3/
THE HTML CODE:
<input type="file" id="my_file_input" />
<div id='my_file_output'></div>
THE JS CODE:
var oFileIn;
$(function() {
oFileIn = document.getElementById('my_file_input');
if(oFileIn.addEventListener) {
oFileIn.addEventListener('change', filePicked, false);
}
});
function filePicked(oEvent) {
// Get The File From The Input
var oFile = oEvent.target.files[0];
var sFilename = oFile.name;
// Create A File Reader HTML5
var reader = new FileReader();
// Ready The Event For When A File Gets Selected
reader.onload = function(e) {
var data = e.target.result;
var cfb = XLS.CFB.read(data, {type: 'binary'});
var wb = XLS.parse_xlscfb(cfb);
// Loop Over Each Sheet
wb.SheetNames.forEach(function(sheetName) {
// Obtain The Current Row As CSV
var sCSV = XLS.utils.make_csv(wb.Sheets[sheetName]);
var oJS = XLS.utils.sheet_to_row_object_array(wb.Sheets[sheetName]);
$("#my_file_output").html(sCSV);
console.log(oJS)
});
};
// Tell JS To Start Reading The File.. You could delay this if desired
reader.readAsBinaryString(oFile);
}
This also requires https://cdnjs.cloudflare.com/ajax/libs/xls/0.7.4-a/xls.js to convert to a readable format, i've also used jquery only for changing the div contents and for the dom ready event.. so jquery is not needed
This is as basic as i could get it,
EDIT - Generating A Table
The Fiddle: http://jsfiddle.net/d2atnbrt/5/
This second fiddle shows an example of generating your own table, the key here is using sheet_to_json to get the data in the correct format for JS use..
One or two comments in the second fiddle might be incorrect as modified version of the first fiddle.. the CSV comment is at least
Test XLS File: http://www.whitehouse.gov/sites/default/files/omb/budget/fy2014/assets/receipts.xls
This does not cover XLSX files thought, it should be fairly easy to adjust for them using their examples.
You have two syntax options:
Option 1
CREATE TABLE Table1 (
id int identity(1, 1) not null,
LongIntColumn1 int,
CurrencyColumn money
)
CREATE TABLE Table2 (
id int identity(1, 1) not null,
LongIntColumn2 int,
CurrencyColumn2 money
)
INSERT INTO Table1 VALUES(12, 12.00)
INSERT INTO Table1 VALUES(11, 13.00)
INSERT INTO Table2
SELECT LongIntColumn1, Avg(CurrencyColumn) as CurrencyColumn1 FROM Table1 GROUP BY LongIntColumn1
Option 2
CREATE TABLE Table1 (
id int identity(1, 1) not null,
LongIntColumn1 int,
CurrencyColumn money
)
INSERT INTO Table1 VALUES(12, 12.00)
INSERT INTO Table1 VALUES(11, 13.00)
SELECT LongIntColumn1, Avg(CurrencyColumn) as CurrencyColumn1
INTO Table2
FROM Table1
GROUP BY LongIntColumn1
Bear in mind that Option 2 will create a table with only the columns on the projection (those on the SELECT).
Since I cannot comment yet, I'm posting an enhanced answer based on @tiago-peres-frança fantastic solution (thanks!). His code does not make directory in a case where only the last directory is missing in the path, e.g. the input is "C:/test/abc" and "C:/test" already exists. Here is a snippet that works:
function mkdirp(filepath) {
var dirname = path.dirname(filepath);
if (!fs.existsSync(dirname)) {
mkdirp(dirname);
}
fs.mkdirSync(filepath);
}
If you want to apply the style even after getting struck-trough indication, you can use "!important"
to enforce the style. It may not be a right solution but solve the problem.
You're looking for TRIM.
UPDATE FOO set FIELD2 = TRIM(FIELD2);
Seems like it might be worth it to mention that TRIM can support multiple types of whitespace, but only one at a time and it will use a space by default. You can, however, nest TRIM
s.
TRIM(BOTH ' ' FROM TRIM(BOTH '\n' FROM column))
If you really want to get rid of all the whitespace in one call, you're better off using REGEXP_REPLACE
along with the [[:space:]]
notation. Here is an example:
SELECT
-- using concat to show that the whitespace is actually removed.
CONCAT(
'+',
REGEXP_REPLACE(
' ha ppy ',
-- This regexp matches 1 or more spaces at the beginning with ^[[:space:]]+
-- And 1 or more spaces at the end with [[:space:]]+$
-- By grouping them with `()` and splitting them with the `|`
-- we match all of the expected values.
'(^[[:space:]]+|[[:space:]]+$)',
-- Replace the above with nothing
''
),
'+')
as my_example;
-- outputs +ha ppy+
You can build it with list comprehension like this:
>>> dict((i, range(int(i), int(i) + 2)) for i in ['1', '2'])
{'1': [1, 2], '2': [2, 3]}
And for the second part of your question use defaultdict
>>> from collections import defaultdict
>>> s = [('yellow', 1), ('blue', 2), ('yellow', 3), ('blue', 4), ('red', 1)]
>>> d = defaultdict(list)
>>> for k, v in s:
d[k].append(v)
>>> d.items()
[('blue', [2, 4]), ('red', [1]), ('yellow', [1, 3])]
Also for openCV in python you can do:
img = cv2.imread('myImage.jpg')
height, width, channels = img.shape
I think you want to say "Are the last four characters of $file equal to .txt
?" If so, you can use the following:
if [ ${file: -4} == ".txt" ]
Note that the space between file:
and -4
is required, as the ':-' modifier means something different.
Let's say I have the GUI:
import tkinter as tk
root = tk.Tk()
btn = tk.Button(root, text="Press")
btn.pack()
root.mainloop()
See that when btn
is pressed it calls its own function which is very similar to button_press_handle
in the following example:
def button_press_handle(callback=None):
if callback:
callback() # Where exactly the method assigned to btn['command'] is being callled
with:
button_press_handle(btn['command'])
You can simply think that command
option should be set as, the reference to the method we want to be called, similar to callback
in button_press_handle
.
Without arguments
So if I wanted to print
something when the button is pressed I would need to set:
btn['command'] = print # default to print is new line
Pay close attention to the lack of ()
with the print
method which is omitted in the meaning that: "This is the method's name which I want you to call when pressed but don't call it just this very instant." However, I didn't pass any arguments for the print
so it printed whatever it prints when called without arguments.
With Argument(s)
Now If I wanted to also pass arguments to the method I want to be called when the button is pressed I could make use of the anonymous functions, which can be created with lambda statement, in this case for print
built-in method, like the following:
btn['command'] = lambda arg1="Hello", arg2=" ", arg3="World!" : print(arg1 + arg2 + arg3)
Without Arguments
You can also achieve that using lambda
statement but it is considered bad practice and thus I won't include it here. The good practice is to define a separate method, multiple_methods
, that calls the methods wanted and then set it as the callback to the button press:
def multiple_methods():
print("Vicariously") # the first inner callback
print("I") # another inner callback
With Argument(s)
In order to pass argument(s) to method that calls other methods, again make use of lambda
statement, but first:
def multiple_methods(*args, **kwargs):
print(args[0]) # the first inner callback
print(kwargs['opt1']) # another inner callback
and then set:
btn['command'] = lambda arg="live", kw="as the" : a_new_method(arg, opt1=kw)
Also further note that callback
can't really return
because it's only called inside button_press_handle
with callback()
as opposed to return callback()
. It does return
but not anywhere outside that function. Thus you should rather modify object(s) that are accessible in the current scope.
Below example will call a method that changes btn
's text each time the button is pressed:
import tkinter as tk
i = 0
def text_mod():
global i, btn # btn can be omitted but not sure if should be
txt = ("Vicariously", "I", "live", "as", "the", "whole", "world", "dies")
btn['text'] = txt[i] # the global object that is modified
i = (i + 1) % len(txt) # another global object that gets modified
root = tk.Tk()
btn = tk.Button(root, text="My Button")
btn['command'] = text_mod
btn.pack(fill='both', expand=True)
root.mainloop()
I don't know if this is the correct way however I did this:
<div class="control-group">
<label class="control-label" for="id1">Label:</label>
<div class="controls">
<textarea id="id1" class="textareawidth" rows="10" name="anyname">value</textarea>
</div>
</div>
and put this in my bootstrapcustom.css file:
@media (min-width: 768px) {
.textareawidth {
width:500px;
}
}
@media (max-width: 767px) {
.textareawidth {
}
}
This way it resizes based on the viewport. Seems to line everything up nicely on a big browser and on a small mobile device.
TCP/IP is a stream-based protocol, not a message-based protocol. There's no guarantee that every send()
call by one peer results in a single recv()
call by the other peer receiving the exact data sent—it might receive the data piece-meal, split across multiple recv()
calls, due to packet fragmentation.
You need to define your own message-based protocol on top of TCP in order to differentiate message boundaries. Then, to read a message, you continue to call recv()
until you've read an entire message or an error occurs.
One simple way of sending a message is to prefix each message with its length. Then to read a message, you first read the length, then you read that many bytes. Here's how you might do that:
def send_msg(sock, msg):
# Prefix each message with a 4-byte length (network byte order)
msg = struct.pack('>I', len(msg)) + msg
sock.sendall(msg)
def recv_msg(sock):
# Read message length and unpack it into an integer
raw_msglen = recvall(sock, 4)
if not raw_msglen:
return None
msglen = struct.unpack('>I', raw_msglen)[0]
# Read the message data
return recvall(sock, msglen)
def recvall(sock, n):
# Helper function to recv n bytes or return None if EOF is hit
data = bytearray()
while len(data) < n:
packet = sock.recv(n - len(data))
if not packet:
return None
data.extend(packet)
return data
Then you can use the send_msg
and recv_msg
functions to send and receive whole messages, and they won't have any problems with packets being split or coalesced on the network level.
It the element has two xpath. Then you can write two xpaths like below:
xpath1
| xpath2
Eg:
//input[@name="username"] | //input[@id="wm_login-username"]
There must be a user in the AllowUsers section, in the config file /etc/ssh/ssh_config, in the remote machine. You might have to restart sshd after editing the config file.
And then you can copy for example the file "test.txt" from a remote host to the local host
scp [email protected]:test.txt /local/dir
@cool_cs you can user ~ symbol ~/Users/djorge/Desktop if it's your home dir.
In UNIX, absolute paths must start with '/'.
When you compare PowerShell to the combination Cygwin/Perl/Shell, be aware that PowerShell only represents the "Shell" part of that combination.
You can however invoke any command from PowerShell just as you do from cmd.exe or Cygwin. It does not re-implement the specified functions, and it is certainly not comparable to Perl.
It's "just" a shell, but it makes programming easier providing a comfortable interface to the .NET universe.
Also keep in mind that PowerShell requires Windows XP, Windows Server 2003 or higher, which may pose a problem depending on your IT infrastructure.
Update:
I had no idea what kind of philosophical debate my answer would spark.
I posted my answer in the context of the question: Compare PowerShell to Cygwin and Perl and Bash.
PowerShell is a shell, as it makes no syntactic difference between built-in commands, commandlets, user functions, and external commands (.exe, .bat, .cmd). Only invoking .NET methods differ by adding a namespace or an object in the call.
Its programmability derives from the .NET framework, not from anything specific to the PowerShell "language".
I'd say I believe PowerShell is a "scripting language" as soon as Bugzilla or MediaWiki are implemented as PowerShell scripts running on a web server ;)
Until then, enjoy the comparisons.
The difference is in the subsystem that each executable targets.
java.exe
targets the CONSOLE
subsystem.javaw.exe
targets the WINDOWS
subsystem.Example of prepending in-place:
var A = [7,8,9]_x000D_
var B = [1,2,3]_x000D_
_x000D_
A.unshift(...B)_x000D_
_x000D_
console.log(A) // [1,2,3,7,8,9]
_x000D_
Be careful in ES6, all the previous solutions doesn't work if you want to check a declaration of a let variable and declare it, if it isn't
example
let myTest = 'text';
if(typeof myTest === "undefined") {
var myTest = 'new text'; // can't be a let because let declare in a scope
}
you will see a error
Uncaught SyntaxError: Identifier 'myTest' has already been declared
The solution was to change it by a var
var myTest = 'text'; // I replace let by a var
if(typeof myTest === "undefined") {
var myTest = 'new text';
}
another solution if you can change a let by a var, you need to remove your var
let myTest = 'text';
if(typeof myTest === "undefined") {
myTest = 'new text'; // I remove the var declaration
}
Install Postman native app, Chrome extension has been deprecated. (Mine was opening in own window but still ran as Chrome app)
import sys, os
try:
raise NotImplementedError("No error")
except Exception as e:
exc_type, exc_obj, exc_tb = sys.exc_info()
fname = os.path.split(exc_tb.tb_frame.f_code.co_filename)[1]
print(exc_type, fname, exc_tb.tb_lineno)
I noticed that this error happens when I send an IQueriable to the view and use it in a double foreach, where the inner foreach also needs to use the connection. Simple example (ViewBag.parents can be IQueriable or DbSet):
foreach (var parent in ViewBag.parents)
{
foreach (var child in parent.childs)
{
}
}
The simple solution is to use .ToList()
on the collection before using it. Also note that MARS does not work with MySQL.
I like this method for concision, readability and presentation in an indented script:
<<-End_of_file >file
? foo bar
End_of_file
Where ?
is a tab character.
The documentation says:
Adds the specified rules and returns all rules for the first matched element. Requires that the parent form is validated, that is,
> $("form").validate() is called first.
Did you do that? The error message kind of indicates that you didn't.
Don't declare the variable in the userform. Declare it as Public
in the module.
Public pass As String
In the Userform
Private Sub CommandButton1_Click()
pass = UserForm1.TextBox1
Unload UserForm1
End Sub
In the Module
Public pass As String
Public Sub Login()
'
'~~> Rest of the code
'
UserForm1.Show
driver.findElementByName("PASSWORD").SendKeys pass
'
'~~> Rest of the code
'
End Sub
You might want to also add an additional check just before calling the driver.find...
line?
If Len(Trim(pass)) <> 0 Then
This will ensure that a blank string is not passed.
I recently needed to do the same thing, and was pleased that the colspan worked fine with consecutive pipes ||
Tested on v4.5 (latest on macports) and the v5.4 (latest on homebrew). Not sure why it doesn't work on the live preview site you provide.
A simple test that I started with was:
| Header ||
|--------------|
| 0 | 1 |
using the command:
multimarkdown -t html test.md > test.html
After much trial and error I was able to get this working based on user359187 answer and this blog post.
To get my old .frm
and .ibd
transferred to a new MySQL database after copying the files over and assigning MySQL ownership, the key for me was to then log into MySQL and connect to the new database then let MySQL do the work by importing the tablespace.
mysql> connect test;
mysql> ALTER TABLE t1 IMPORT TABLESPACE;
This will import the data using the copied .frm
and .ibd
files.
I had to run the Alter command for each table separately but this worked and I was able to recover the tables and data.
With the help of this post, I have made a script that will install via the app Installous for rapid deployment:
# compress application.
/bin/mkdir -p $CONFIGURATION_BUILD_DIR/Payload
/bin/cp -R $CONFIGURATION_BUILD_DIR/MyApp.app $CONFIGURATION_BUILD_DIR/Payload
/bin/cp iTunesCrap/logo_itunes.png $CONFIGURATION_BUILD_DIR/iTunesArtwork
/bin/cp iTunesCrap/iTunesMetadata.plist $CONFIGURATION_BUILD_DIR/iTunesMetadata.plist
cd $CONFIGURATION_BUILD_DIR
# zip up the HelloWorld directory
/usr/bin/zip -r MyApp.ipa Payload iTunesArtwork iTunesMetadata.plist
What Is missing in the post referenced above, is the iTunesMetadata. Without this, Installous will not install apps correctly. Here is an example of an iTunesMetadata:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>appleId</key>
<string></string>
<key>artistId</key>
<integer>0</integer>
<key>artistName</key>
<string>MYCOMPANY</string>
<key>buy-only</key>
<true/>
<key>buyParams</key>
<string></string>
<key>copyright</key>
<string></string>
<key>drmVersionNumber</key>
<integer>0</integer>
<key>fileExtension</key>
<string>.app</string>
<key>genre</key>
<string></string>
<key>genreId</key>
<integer>0</integer>
<key>itemId</key>
<integer>0</integer>
<key>itemName</key>
<string>MYAPP</string>
<key>kind</key>
<string>software</string>
<key>playlistArtistName</key>
<string>MYCOMPANY</string>
<key>playlistName</key>
<string>MYAPP</string>
<key>price</key>
<integer>0</integer>
<key>priceDisplay</key>
<string>nil</string>
<key>rating</key>
<dict>
<key>content</key>
<string></string>
<key>label</key>
<string>4+</string>
<key>rank</key>
<integer>100</integer>
<key>system</key>
<string>itunes-games</string>
</dict>
<key>releaseDate</key>
<string>Sunday, December 12, 2010</string>
<key>s</key>
<integer>143441</integer>
<key>softwareIcon57x57URL</key>
<string></string>
<key>softwareIconNeedsShine</key>
<false/>
<key>softwareSupportedDeviceIds</key>
<array>
<integer>1</integer>
</array>
<key>softwareVersionBundleId</key>
<string>com.mycompany.myapp</string>
<key>softwareVersionExternalIdentifier</key>
<integer>0</integer>
<key>softwareVersionExternalIdentifiers</key>
<array>
<integer>1466803</integer>
<integer>1529132</integer>
<integer>1602608</integer>
<integer>1651681</integer>
<integer>1750461</integer>
<integer>1930253</integer>
<integer>1961532</integer>
<integer>1973932</integer>
<integer>2026202</integer>
<integer>2526384</integer>
<integer>2641622</integer>
<integer>2703653</integer>
</array>
<key>vendorId</key>
<integer>0</integer>
<key>versionRestrictions</key>
<integer>0</integer>
</dict>
</plist>
Obviously, replace all instances of MyApp with the name of your app and MyCompany with the name of your company.
Basically, this will install on any jailbroken device with Installous installed. After it is set up, this results in very fast deployment, as it can be installed from anywhere, just upload it to your companies website, and download the file directly to the device, and copy / move it to ~/Documents/Installous/Downloads
.
No you don’t need quotes.
Yes you can. But note that relative URLs are resolved from the URL of your stylesheet.
Better don’t use quotes. I think there are clients that don’t understand them.
Hi I'm also relatively new but I can give you basic help.
UPDATE 12.01.2016:
The bold line is the current branch.
You can also just double click a branch to use checkout.
And here some helpful links:
As many people mentioned, it looks like you are looking in your JRE instead of the JDK for the tools.jar file.
I would also like to mention that on recent versions of the JDK, there is no more tools.jar file. I downloaded the most recent JDK as of today (JDK version 12) and I could not find any tools.jar. I had to download JDK version 8 (1.8.0) here https://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html to get the tools.jar file. I downloaded that version, took the tools.jar file and put it into my recent version's lib folder.
Take a look at ?legend
and try this:
legend('topright', names(a)[-1] ,
lty=1, col=c('red', 'blue', 'green',' brown'), bty='n', cex=.75)
Solution
To see the option for USB debugging mode in Nexus 4 or Android 4.2 or higher OS, do the following:
Done! By tapping on “Build number” seven times, you have unlocked USB debugging mode on Android 4.2 and higher. You can now enable/disable it whenever you desire by going to “Settings” -> “Developer Options” -> “Debugging” ->” USB debugging”.
CONCLUSION
That was easy. The best part is you only have to do the tap-build-number-seven-times once. After you do it once, USB debugging has been unlocked and you can enable or disable at your leisure. Please restart after done these steps.
Additional information
Setting up a Device for Development native documentation of Google Android developer site
Update: Google Pixel 3
If you need to facilitate a connection between your device and a computer with the Android SDK (software development kit), view this info.
Doc by Verizon: Original source
Looking at your example, I think ArrayBlockingQueue (or its siblings) may be of use. They look after the synchronisation for you, so threads can write to the queue or peek/take without additional synchronisation work on your part.
You either have to make the method Shared
or use an instance of the class General
:
Dim gen = New General()
gen.updateDynamics(get_prospect.dynamicsID)
or
General.updateDynamics(get_prospect.dynamicsID)
Public Shared Sub updateDynamics(dynID As Int32)
' ... '
End Sub
Well, I'd say use the DIV instead of table as it would be much easier (but there's nothing wrong with using tables).
My approach would be to use jQuery.ajax and request more data from server and that way, the selected DIV (or TD if you use table) will automatically expand based on requested content.
That way, it saves bandwidth and makes it go faster as you don't load all content at once. It loads only when it's selected.
You can use Sorted Set in redis to get a TTL container with timestamp as score.
For example, whenever you insert a event string into the set you can set its score to the event time.
Thus you can get data of any time window by calling
zrangebyscore "your set name" min-time max-time
Moreover, we can do expire by using zremrangebyscore "your set name" min-time max-time
to remove old events.
The only drawback here is you have to do housekeeping from an outsider process to maintain the size of the set.
Either you set LDAP_DOMAIN variable or you misconfigured it. Jump inside of ldap machine/container and run:
slapcat > backup.ldif
If it fails, check punctuation, quotes etc while you assigned variable "LDAP_DOMAIN" Otherwise you will find answer inside on backup.ldif file.
You need to move cipherText = ""
before the start of the for loop. You're resetting it each time through the loop.
def caesar(plainText, shift):
cipherText = ""
for ch in plainText:
if ch.isalpha():
stayInAlphabet = ord(ch) + shift
if stayInAlphabet > ord('z'):
stayInAlphabet -= 26
finalLetter = chr(stayInAlphabet)
cipherText += finalLetter
print "Your ciphertext is: ", cipherText
return cipherText
You mean like this?
void foo ( int i ) {
if ( i < 0 ) return; // do nothing
// do something
}
Use
export LD_LIBRARY_PATH="/path/to/library/"
in your .bashrc otherwise, it'll only be available to bash and not any programs you start.
Try -R/path/to/library/
flag when you're linking, it'll make the program look in that directory and you won't need to set any environment variables.
EDIT: Looks like -R
is Solaris only, and you're on Linux.
An alternate way would be to add the path to /etc/ld.so.conf
and run ldconfig
. Note that this is a global change that will apply to all dynamically linked binaries.
The easiest way is to use position: fixed
:
.element {
position: fixed;
bottom: 0;
right: 0;
}
http://www.w3.org/TR/CSS21/visuren.html#choose-position
(note that position fixed is buggy / doesn't work on ios and android browsers)
c.Request["AP"]
will read posted values. Also you need to use a submit button to post the form:
<input type="submit" value="Submit" />
instead of
<input type=button value="Submit" />
SDK developers prefer to define their own types using typedef. This allows changing underlying types only in one place, without changing all client code. It is important to follow this convention. DWORD is unlikely to be changed, but types like DWORD_PTR are different on different platforms, like Win32 and x64. So, if some function has DWORD parameter, use DWORD and not unsigned int, and your code will be compiled in all future windows headers versions.
Based on Kovpas & Damien Praca's Answers, here is an implementation of UILabelUnderligned which also support textAlignemnt.
#import <UIKit/UIKit.h>
@interface UILabelUnderlined : UILabel
@end
and the implementation:
#import "UILabelUnderlined.h"
@implementation DKUILabel
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
// Initialization code
}
return self;
}
- (void)drawRect:(CGRect)rect {
CGContextRef ctx = UIGraphicsGetCurrentContext();
const CGFloat* colors = CGColorGetComponents(self.textColor.CGColor);
CGContextSetRGBStrokeColor(ctx, colors[0], colors[1], colors[2], 1.0); // RGBA
CGContextSetLineWidth(ctx, 1.0f);
CGSize textSize = [self.text sizeWithFont:self.font constrainedToSize:CGSizeMake(200, 9999)];
// handle textAlignement
int alignementXOffset = 0;
switch (self.textAlignment) {
case UITextAlignmentLeft:
break;
case UITextAlignmentCenter:
alignementXOffset = (self.frame.size.width - textSize.width)/2;
break;
case UITextAlignmentRight:
alignementXOffset = self.frame.size.width - textSize.width;
break;
}
CGContextMoveToPoint(ctx, alignementXOffset, self.bounds.size.height - 1);
CGContextAddLineToPoint(ctx, alignementXOffset+textSize.width, self.bounds.size.height - 1);
CGContextStrokePath(ctx);
[super drawRect:rect];
}
@end
In case anybody is looking for methods to convert from/to C# and SQL Server formats, here goes a simple implementation:
private readonly string[] SqlServerTypes = { "bigint", "binary", "bit", "char", "date", "datetime", "datetime2", "datetimeoffset", "decimal", "filestream", "float", "geography", "geometry", "hierarchyid", "image", "int", "money", "nchar", "ntext", "numeric", "nvarchar", "real", "rowversion", "smalldatetime", "smallint", "smallmoney", "sql_variant", "text", "time", "timestamp", "tinyint", "uniqueidentifier", "varbinary", "varchar", "xml" };
private readonly string[] CSharpTypes = { "long", "byte[]", "bool", "char", "DateTime", "DateTime", "DateTime", "DateTimeOffset", "decimal", "byte[]", "double", "Microsoft.SqlServer.Types.SqlGeography", "Microsoft.SqlServer.Types.SqlGeometry", "Microsoft.SqlServer.Types.SqlHierarchyId", "byte[]", "int", "decimal", "string", "string", "decimal", "string", "Single", "byte[]", "DateTime", "short", "decimal", "object", "string", "TimeSpan", "byte[]", "byte", "Guid", "byte[]", "string", "string" };
public string ConvertSqlServerFormatToCSharp(string typeName)
{
var index = Array.IndexOf(SqlServerTypes, typeName);
return index > -1
? CSharpTypes[index]
: "object";
}
public string ConvertCSharpFormatToSqlServer(string typeName)
{
var index = Array.IndexOf(CSharpTypes, typeName);
return index > -1
? SqlServerTypes[index]
: null;
}
Edit: fixed typo
I'm not sure for JPA 1.0 but you can pass a Collection
in JPA 2.0:
String qlString = "select item from Item item where item.name IN :names";
Query q = em.createQuery(qlString, Item.class);
List<String> names = Arrays.asList("foo", "bar");
q.setParameter("names", names);
List<Item> actual = q.getResultList();
assertNotNull(actual);
assertEquals(2, actual.size());
Tested with EclipseLInk. With Hibernate 3.5.1, you'll need to surround the parameter with parenthesis:
String qlString = "select item from Item item where item.name IN (:names)";
But this is a bug, the JPQL query in the previous sample is valid JPQL. See HHH-5126.
The standard Perl solution is:
echo $TIMESTAMP | perl -nE 'say scalar gmtime $_'
(or localtime, if preferred)
Both are Creational patterns, to create Object.
1) Factory Pattern - Assume, you have one super class and N number of sub classes. The object is created depends on which parameter/value is passed.
2) Builder pattern - to create complex object.
Ex: Make a Loan Object. Loan could be house loan, car loan ,
education loan ..etc. Each loan will have different interest rate, amount ,
duration ...etc. Finally a complex object created through step by step process.
Do I really have to manually call datetime(d.year, d.month, d.day)
No, you'd rather like to call
date_to_datetime(dt)
which you can implement once in some utils/time.py
in your project:
from typing import Optional
from datetime import date, datetime
def date_to_datetime(
dt: date,
hour: Optional[int] = 0,
minute: Optional[int] = 0,
second: Optional[int] = 0) -> datetime:
return datetime(dt.year, dt.month, dt.day, hour, minute, second)
I can't believe nobody offered plain shell:
while read -r a b c d; do echo "$d"; done < file
In c# you your browser name using:
System.Web.HttpBrowserCapabilities browser = Request.Browser;
For details see a link.
http://msdn.microsoft.com/en-us/library/3yekbd5b%28v=vs.100%29.aspx
and in Client side:
JQuery:
jQuery.browser
For details see a link:
Update to SQL server 2016/2017/…
We have some stored procedures in place to import and export databases.
In the sp we use (amongst other things) RESTORE FILELISTONLY FROM DISK where we create a
table "#restoretemp" for the restore from file.
With SQL server 2016, MS has added a field SnapshotURL nvarchar(360) (restore url Azure) what has caused the error message.
After I have enhanced the additional field, the restore has worked again.
Code snipped (see last field):
SET @query = 'RESTORE FILELISTONLY FROM DISK = ' + QUOTENAME(@BackupFile , '''')
CREATE TABLE #restoretemp
(
LogicalName nvarchar(128)
,PhysicalName nvarchar(128)
,[Type] char(1)
,FileGroupName nvarchar(128)
,[Size] numeric(20,0)
,[MaxSize] numeric(20,0)
,FileID bigint
,CreateLSN numeric(25,0)
,DropLSN numeric(25,0) NULL
,UniqueID uniqueidentifier
,ReadOnlyLSN numeric(25,0)
,ReadWriteLSN numeric(25,0)
,BackupSizeInByte bigint
,SourceBlockSize int
,FilegroupID int
,LogGroupGUID uniqueidentifier NULL
,DifferentialBaseLSN numeric(25,0)
,DifferentialbaseGUID uniqueidentifier
,IsReadOnly bit
,IsPresent bit
,TDEThumbprint varbinary(32)
-- Added field 01.10.2018 needed from SQL Server 2016 (Azure URL)
,SnapshotURL nvarchar(360)
)
INSERT #restoretemp EXEC (@query)
SET @errorstat = @@ERROR
if @errorstat <> 0
Begin
if @Rueckgabe = 0 SET @Rueckgabe = 6
End
Print @Rueckgabe
Take for example the case where Class A has a getSomething method and class B has a getSomething method and class C extends A and B. What would happen if someone called C.getSomething? There is no way to determine which method to call.
Interfaces basically just specify what methods a implementing class needs to contain. A class that implements multiple interfaces just means that class has to implement the methods from all those interfaces. Whci would not lead to any issues as described above.
The easiest way to get second last row from a SQL table is to use ORDER BY
ColumnName
DESC
and set LIMIT 1,1
.
Try this:
SELECT * from `TableName` ORDER BY `ColumnName` DESC LIMIT 1,1
In Chrome, request with 'Content-Type:application/json' shows as Request PayedLoad and sends data as json object.
But request with 'Content-Type:application/x-www-form-urlencoded' shows Form Data and sends data as Key:Value Pair, so if you have array of object in one key it flats that key's value:
{ Id: 1,
name:'john',
phones:[{title:'home',number:111111,...},
{title:'office',number:22222,...}]
}
sends
{ Id: 1,
name:'john',
phones:[object object]
phones:[object object]
}
Use float fabsf (float n)
for float
values.
Use double fabs (double n)
for double
values.
Use long double fabsl(long double)
for long double
values.
Use abs(int)
for int
values.
no need to use user and password as part of the URL
you can try this
byte[] encodedBytes = Base64.encodeBase64("user:passwd".getBytes());
String USER_PASS = new String(encodedBytes);
HttpUriRequest request = RequestBuilder.get(url).addHeader("Authorization", USER_PASS).build();
See Converting unix timestamp to excel date-time forum thread.
Visual Studio 2015/2017's live debugger is injecting code that contains the deprecated call.
The only way you can read a variable amount of data from stdin
is using loops. I've always found that the std::getline()
function works very well:
std::string line;
while (std::getline(std::cin, line))
{
std::cout << line << std::endl;
}
By default getline()
reads until a newline. You can specify an alternative termination character, but EOF is not itself a character so you cannot simply make one call to getline()
.
Here is another simple clean way:
var jsonArr = [];
grid.getStore().each( function (model) {
jsonArr.push(model.data);
});
Yes Java allows vargs
in method parameter .
public class Varargs
{
public int add(int... numbers)
{
int result = 1;
for(int number: numbers)
{
result= result+number;
} return result;
}
}
Or, you can declare input number as long, and then let it do the code tango :D ...
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
System.out.println("Enter a number");
long n = in.nextLong();
for (long i = 2; i <= n; i++) {
while (n % i == 0) {
System.out.print(", " + i);
n /= i;
}
}
}
You probably have an old version of wget. I suggest installing wget using Chocolatey, the package manager for Windows. This should give you a more recent version (if not the latest).
Run this command after having installed Chocolatey (as Administrator):
choco install wget
Turns out that the post (or rather the whole table) was locked by the very same connection that I tried to update the post with.
I had a opened record set of the post that was created by:
Set RecSet = Conn.Execute()
This type of recordset is supposed to be read-only and when I was using MS Access as database it did not lock anything. But apparently this type of record set did lock something on MS SQL Server 2012 because when I added these lines of code before executing the UPDATE SQL statement...
RecSet.Close
Set RecSet = Nothing
...everything worked just fine.
So bottom line is to be careful with opened record sets - even if they are read-only they could lock your table from updates.
e.preventDefault();
from https://developer.mozilla.org/en-US/docs/Web/API/event.preventDefault
Cancels the event if it is cancelable, without stopping further propagation of the event.
You can fire click() on any browser but some browsers need the element to be visible and focused. Here's a jQuery example:
$('#input_element').show();
$('#input_element').focus();
$('#input_element').click();
$('#input_element').hide();
It works with the hide before the click()
but I don't know if it works without calling the show method. Never tried this on Opera, I tested on IE/FF/Safari/Chrome and it works. I hope this will help.
1.- Remember the name you gave to the file and instead of using hdfs dfs -put. Use 'get' instead. See below.
$hdfs dfs -get /output-fileFolderName-In-hdfs
Plain javascript: document.location = 'http://www.google.com';
This will cause a browser refresh though - consider using hashes if you're in need of having the URL updated to implement some kind of browsing history without reloading the page. You might want to look into jQuery.hashchange if this is the case.
If you're doing jQuery, and you've got a serializeArray thing going on concerning your form data, such as :
var postData = $('#yourform').serializeArray();
// postData (array with objects) :
// [{name: "firstname", value: "John"}, {name: "lastname", value: "Doe"}, etc]
...and you need to add a key/value to this array with the same structure, for instance when posting to a PHP ajax request then this :
postData.push({"name": "phone", "value": "1234-123456"});
Result:
// postData :
// [{name: "firstname", value: "John"}, {name: "lastname", value: "Doe"}, {"name":"phone","value":"1234-123456"}]
Here's how I had to use it in my curl script for couchDB. It really helped out a lot. Thanks!
bin/curl -X PUT "db_domain_name_:5984/_config/vhosts/$1.couchdb" -d '"/'"$1"'/"' --user "admin:*****"
In my case it was something else: the object I was saving should first have an id(e.g. save() should be called) before I could set any kind of relationship with it.
In addition to @Bergi’s answer, I’d like to offer a third alternative. It's very similar to @Bergi’s 2nd example, but instead of awaiting each readFile
individually, you create an array of promises, each which you await at the end.
import fs from 'fs-promise';
async function printFiles () {
const files = await getFilePaths();
const promises = files.map((file) => fs.readFile(file, 'utf8'))
const contents = await Promise.all(promises)
contents.forEach(console.log);
}
Note that the function passed to .map()
does not need to be async
, since fs.readFile
returns a Promise object anyway. Therefore promises
is an array of Promise objects, which can be sent to Promise.all()
.
In @Bergi’s answer, the console may log file contents in the order they’re read. For example if a really small file finishes reading before a really large file, it will be logged first, even if the small file comes after the large file in the files
array. However, in my method above, you are guaranteed the console will log the files in the same order as the provided array.
Right click in Project / Clean
That always works for me
use VERSION
special variable
$psql -c "\echo :VERSION"
Why not use a PdfPTable
object for this?
Create a fixed width table and use a float array to set the widths of the columns
PdfPTable table = new PdfPTable(10);
table.HorizontalAlignment = 0;
table.TotalWidth = 500f;
table.LockedWidth = true;
float[] widths = new float[] { 20f, 60f, 60f, 30f, 50f, 80f, 50f, 50f, 50f, 50f };
table.SetWidths(widths);
addCell(table, "SER.\nNO.", 2);
addCell(table, "TYPE OF SHIPPING", 1);
addCell(table, "ORDER NO.", 1);
addCell(table, "QTY.", 1);
addCell(table, "DISCHARGE PPORT", 1);
addCell(table, "DESCRIPTION OF GOODS", 2);
addCell(table, "LINE DOC. RECL DATE", 1);
addCell(table, "CLEARANCE DATE", 2);
addCell(table, "CUSTOM PERMIT NO.", 2);
addCell(table, "DISPATCH DATE", 2);
addCell(table, "AWB/BL NO.", 1);
addCell(table, "COMPLEX NAME", 1);
addCell(table, "G. W. Kgs.", 1);
addCell(table, "DESTINATION", 1);
addCell(table, "OWNER DOC. RECL DATE", 1);
....
private static void addCell(PdfPTable table, string text, int rowspan)
{
BaseFont bfTimes = BaseFont.CreateFont(BaseFont.TIMES_ROMAN, BaseFont.CP1252, false);
iTextSharp.text.Font times = new iTextSharp.text.Font(bfTimes, 6, iTextSharp.text.Font.NORMAL, iTextSharp.text.BaseColor.BLACK);
PdfPCell cell = new PdfPCell(new Phrase(text, times));
cell.Rowspan = rowspan;
cell.HorizontalAlignment = PdfPCell.ALIGN_CENTER;
cell.VerticalAlignment = PdfPCell.ALIGN_MIDDLE;
table.AddCell(cell);
}
have a look at this tutorial too...
I'd try to search for the solution by google and the string Python for statement, it is as simple as that. The first link says everything. (A great forum, really, but its usage seems to look sometimes like the usage of the Microsoft understanding of all their GUI products' benefits: windows inside, idiots outside.)
The Problem is how you access row
Specifically row["waocs"]
and row["pool_number"]
of ocs[row["pool_number"]]=int(row["waocs"])
If you look up the official-documentation of fetchall()
you find.
The method fetches all (or all remaining) rows of a query result set and returns a list of tuples.
Therefore you have to access the values of rows with row[__integer__]
like row[0]
In case you need HORIZONTAL SPLIT resize as well:
The command is the same for all splits, just the parameter changes:
-
+
instead of <
>
Examples:
Decrease horizontal size by 10 columns
:10winc -
Increase horizontal size by 30 columns
:30winc +
or within normal mode:
Horizontal splits
10 CTRL+w -
30 CTRL+w +
Vertical splits
10 CTRL+w < (decrease)
30 CTRL+w > (increase)
You can stop the 2-line separation in the output by using
with open('t.ini') as f:
for line in f:
print line.strip()
if 'str' in line:
break
For FIRE STICK 4K it actually says in the dialog:
Otherwise check for a confirmation dialog on your device
Indeed on the TV in the other room there was a confirmation dialog. Doh'!
All tables should have a primary key (consisting of a single or multiple columns), duplicate rows doesn't make sense in a relational database. You can limit the number of delete rows using LIMIT
though:
DELETE FROM orders WHERE id_users = 1 AND id_product = 2 LIMIT 1
But that just solves your current issue, you should definitely work on the bigger issue by defining primary keys.
For those doing video I cobbled the following based on @tsh :
import cv2 as cv
import numpy as np
def nothing(x):pass
cap = cv.VideoCapture(0)
cv.namedWindow('videoUI', cv.WINDOW_NORMAL)
cv.createTrackbar('T','videoUI',0,255,nothing)
while(True):
ret, frame = cap.read()
vid_gray = cv.cvtColor(frame, cv.COLOR_BGR2GRAY)
thresh = cv.getTrackbarPos('T','videoUI');
vid_bw = cv.threshold(vid_gray, thresh, 255, cv.THRESH_BINARY)[1]
cv.imshow('videoUI',cv.flip(vid_bw,1))
if cv.waitKey(1) & 0xFF == ord('q'):
break
cap.release()
cv.destroyAllWindows()
Results in:
for what DB is the user? look at this example
mysql> create database databasename;
Query OK, 1 row affected (0.00 sec)
mysql> grant all on databasename.* to cmsuser@localhost identified by 'password';
Query OK, 0 rows affected (0.00 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
so to return to you question the "%" operator means all computers in your network.
like aspesa shows I'm also sure that you have to create or update a user. look for all your mysql users:
SELECT user,password,host FROM user;
as soon as you got your user set up you should be able to connect like this:
mysql -h localhost -u gmeier -p
hope it helps
CountDownTimer waitTimer;
waitTimer = new CountDownTimer(60000, 300) {
public void onTick(long millisUntilFinished) {
//called every 300 milliseconds, which could be used to
//send messages or some other action
}
public void onFinish() {
//After 60000 milliseconds (60 sec) finish current
//if you would like to execute something when time finishes
}
}.start();
to stop the timer early:
if(waitTimer != null) {
waitTimer.cancel();
waitTimer = null;
}
This one's already accepted, but if there are any other dummies out there (like me) that didn't immediately get it from the presently accepted answer, here's a bit more detail.
The model class referenced by the ForeignKey
needs to have a __unicode__
method within it, like here:
class Category(models.Model):
name = models.CharField(max_length=50)
def __unicode__(self):
return self.name
That made the difference for me, and should apply to the above scenario. This works on Django 1.0.2.
This is a good use of a temporary table.
CREATE TEMPORARY TABLE patterns (
pattern VARCHAR(20)
);
INSERT INTO patterns VALUES ('ABC%'), ('XYZ%'), ('PQR%');
SELECT t.* FROM tbl t JOIN patterns p ON (t.col LIKE p.pattern);
In the example patterns, there's no way col
could match more than one pattern, so you can be sure you'll see each row of tbl
at most once in the result. But if your patterns are such that col
could match more than one, you should use the DISTINCT
query modifier.
SELECT DISTINCT t.* FROM tbl t JOIN patterns p ON (t.col LIKE p.pattern);
I had to cast the integer equivalent to get around the fact that I'm still using .NET 4.0
System.Net.ServicePointManager.SecurityProtocol = (SecurityProtocolType)3072;
/* Note the property type
[System.Flags]
public enum SecurityProtocolType
{
Ssl3 = 48,
Tls = 192,
Tls11 = 768,
Tls12 = 3072,
}
*/
you can use the following to check your free (swap) memory
free -m
total used free shared buffers cached
Mem: 2048 357 1690 0 0 237
-/+ buffers/cache: 119 1928
Swap: 0 0 0
To enable the swap you can use for example:
/bin/dd if=/dev/zero of=/var/swap.1 bs=1M count=1024
/sbin/mkswap /var/swap.1
/sbin/swapon /var/swap.1
This problem appear if two software use same port
generally Android studio use the port 5037
try to close the port by cmd according to your operating system
then reboot your Android studio or your Eclipse
This problem, in my case, wasn't related to the Insert key. It was related to Vrapper being enabled and editing like Vim, without my knowledge.
I just toggled the Vrapper Icon in Eclipse top bar of menus and then pressed the Insert Key and the problem was solved.
Hopefully this answer will help someone in the future.
You cant combine this to attributes.
But you can put both on one action method but you can encapsulate your logic into a other method and call this method from both actions.
The ActionName
Attribute allows to have 2 ActionMethods with the same name.
[HttpGet]
public ActionResult MyMethod()
{
return MyMethodHandler();
}
[HttpPost]
[ActionName("MyMethod")]
public ActionResult MyMethodPost()
{
return MyMethodHandler();
}
private ActionResult MyMethodHandler()
{
// handle the get or post request
return View("MyMethod");
}
Try if that works
sc = spark.sparkContext
# Infer the schema, and register the DataFrame as a table.
schemaPeople = spark.createDataFrame(RddName)
schemaPeople.createOrReplaceTempView("RddName")
Follow
Create default db folder.
c:\data\db
and also log folder
c:\data\log\mongo.log
or use following commands in command-prompt
mkdir c:\data\log
mkdir c:\data\db
Create config file in bin folder of mongo (or you may in save your desired destination).
Add following in text file named "mongod" and save it as
mongod.cfg
dbpath=c:\data\db
logpath=c:\data\log\mongo.log
or use following commands in command-prompt
echo dbpath=c:\data\db>> "mongod.cfg"
echo logpath=c:\data\log\mongo.log>> "mongod.cfg"
Now open command-prompt (administrator) and run the following command to start mongo server
mongod
Open another command-prompt (don't close 1st prompt) and run client command:
mongo
Hope this will help or you have done this already.
While @ajv-jsy's answer works most of the time, I had the same problem as @MarioVilas. If one of the strings to be compared contains a double quote ("), the variable expansion throws an error.
Example:
@echo off
SetLocal
set Lhs="
set Rhs="
if "%Lhs%" == "%Rhs%" echo Equal
Error:
echo was unexpected at this time.
Enable delayed expansion and use ! instead of %.
@echo off
SetLocal EnableDelayedExpansion
set Lhs="
set Rhs="
if !Lhs! == !Rhs! echo Equal
:: Surrounding with double quotes also works but appears (is?) unnecessary.
if "!Lhs!" == "!Rhs!" echo Equal
I have not been able to break it so far using this technique. It works with empty strings and all the symbols I threw at it.
Test:
@echo off
SetLocal EnableDelayedExpansion
:: Test empty string
set Lhs=
set Rhs=
echo Lhs: !Lhs! & echo Rhs: !Rhs!
if !Lhs! == !Rhs! (echo Equal) else (echo Not Equal)
echo.
:: Test symbols
set Lhs= \ / : * ? " ' < > | %% ^^ ` ~ @ # $ [ ] & ( ) + - _ =
set Rhs= \ / : * ? " ' < > | %% ^^ ` ~ @ # $ [ ] & ( ) + - _ =
echo Lhs: !Lhs! & echo Rhs: !Rhs!
if !Lhs! == !Rhs! (echo Equal) else (echo Not Equal)
echo.
If you want one line:
list_of_dict = [{} for i in range(list_len)]
If you want to remove the support for any architecture, for example, ARMv7-s in your case, use menu Project -> Build Settings -> remove the architecture from "valid architectures".
You can use this as a temporary solution until the library has been updated. You have to remove the architecture from your main project, not from the library.
Alternatively, you can set the flag for your debug configuration's "Build Active Architecture Only" to Yes. Leave the release configuration's "Build Active Architecture Only" to No, just so you'll get a reminder before releasing that you ought to upgrade any third-party libraries you're using.
There isn't a direct 1:1 equivalent.
You can password protect a folder or file using file system permissions. If you are using ASP.Net you can also use some of its built in functions to protect various urls.
If you are trying to port .htaccess files used for url rewriting, check out ISAPI Rewrite: http://www.isapirewrite.com/
Stay away from regex
and filter_var()
solutions for validating email. See this answer: https://stackoverflow.com/a/42037557/953833
Here's a quick and dirty method that does what you want in a generic way. You'll need to add exception handling and you'll probably want to cache the BeanInfo types in a weakhashmap.
public Map<String, Object> getNonNullProperties(final Object thingy) {
final Map<String, Object> nonNullProperties = new TreeMap<String, Object>();
try {
final BeanInfo beanInfo = Introspector.getBeanInfo(thingy
.getClass());
for (final PropertyDescriptor descriptor : beanInfo
.getPropertyDescriptors()) {
try {
final Object propertyValue = descriptor.getReadMethod()
.invoke(thingy);
if (propertyValue != null) {
nonNullProperties.put(descriptor.getName(),
propertyValue);
}
} catch (final IllegalArgumentException e) {
// handle this please
} catch (final IllegalAccessException e) {
// and this also
} catch (final InvocationTargetException e) {
// and this, too
}
}
} catch (final IntrospectionException e) {
// do something sensible here
}
return nonNullProperties;
}
See these references:
With mysql Ver 14.14 Distrib 5.7.22 the update statement is now:
update user set authentication_string=password('1111') where user='root';
As a side note, the problem with the Dreaded Diamond is that the base class is present multiple times. So with regular inheritance, you believe you have:
A
/ \
B C
\ /
D
But in the memory layout, you have:
A A
| |
B C
\ /
D
This explain why when call D::foo()
, you have an ambiguity problem. But the real problem comes when you want to use a member variable of A
. For example, let's say we have:
class A
{
public :
foo() ;
int m_iValue ;
} ;
When you'll try to access m_iValue
from D
, the compiler will protest, because in the hierarchy, it'll see two m_iValue
, not one. And if you modify one, say, B::m_iValue
(that is the A::m_iValue
parent of B
), C::m_iValue
won't be modified (that is the A::m_iValue
parent of C
).
This is where virtual inheritance comes handy, as with it, you'll get back to a true diamond layout, with not only one foo()
method only, but also one and only one m_iValue
.
Imagine:
A
has some basic feature.B
adds to it some kind of cool array of data (for example)C
adds to it some cool feature like an observer pattern (for example, on m_iValue
).D
inherits from B
and C
, and thus from A
.With normal inheritance, modifying m_iValue
from D
is ambiguous and this must be resolved. Even if it is, there are two m_iValues
inside D
, so you'd better remember that and update the two at the same time.
With virtual inheritance, modifying m_iValue
from D
is ok... But... Let's say that you have D
. Through its C
interface, you attached an observer. And through its B
interface, you update the cool array, which has the side effect of directly changing m_iValue
...
As the change of m_iValue
is done directly (without using a virtual accessor method), the observer "listening" through C
won't be called, because the code implementing the listening is in C
, and B
doesn't know about it...
If you're having a diamond in your hierarchy, it means that you have 95% probability to have done something wrong with said hierarchy.
This is what I typically do:
File outputDir = context.getCacheDir(); // context being the Activity pointer
File outputFile = File.createTempFile("prefix", "extension", outputDir);
As for their deletion, I am not complete sure either. Since I use this in my implementation of a cache, I manually delete the oldest files till the cache directory size comes down to my preset value.
The timeout you specify here needs to be shorter than the default timeout.
The default timeout is 5000
and the framework by default is jasmine
in case of jest
. You can specify the timeout inside the test by adding
jest.setTimeout(30000);
But this would be specific to the test. Or you can set up the configuration file for the framework.
// jest.config.js
module.exports = {
// setupTestFrameworkScriptFile has been deprecated in
// favor of setupFilesAfterEnv in jest 24
setupFilesAfterEnv: ['./jest.setup.js']
}
// jest.setup.js
jest.setTimeout(30000)
See also these threads:
Make jasmine.DEFAULT_TIMEOUT_INTERVAL configurable #652
P.S.: The misspelling setupFilesAfterEnv
(i.e. setupFileAfterEnv
) will also throw the same error.
I'm late to the game here but in-case others want an easy solution, I created a set of functions which can be called like:
ggplot + scale_x_continuous(labels = human_gbp)
which give you human readable numbers for x or y axes (or any number in general really).
You can find the functions here: Github Repo Just copy the functions in to your script so you can call them.
Thought I'd add an answer since your question title looks like it is asking how to create or update, rather than get or create as described in the question body.
If you did want to create or update an object, the .save() method already has this behaviour by default, from the docs:
Django abstracts the need to use INSERT or UPDATE SQL statements. Specifically, when you call save(), Django follows this algorithm:
If the object’s primary key attribute is set to a value that evaluates to True (i.e., a value other than None or the empty string), Django executes an UPDATE. If the object’s primary key attribute is not set or if the UPDATE didn’t update anything, Django executes an INSERT.
It's worth noting that when they say 'if the UPDATE didn't update anything' they are essentially referring to the case where the id you gave the object doesn't already exist in the database.
Angular 1.1.5 introduced the ng-if directive. That's the best solution for this particular problem. If you are using an older version of Angular, consider using angular-ui's ui-if directive.
If you arrived here looking for answers to the general question of "conditional logic in templates" also consider:
Original answer:
Here is a not-so-great "ng-if" directive:
myApp.directive('ngIf', function() {
return {
link: function(scope, element, attrs) {
if(scope.$eval(attrs.ngIf)) {
// remove '<div ng-if...></div>'
element.replaceWith(element.children())
} else {
element.replaceWith(' ')
}
}
}
});
that allows for this HTML syntax:
<div ng-repeat="message in data.messages" ng-class="message.type">
<hr>
<div ng-if="showFrom(message)">
<div>From: {{message.from.name}}</div>
</div>
<div ng-if="showCreatedBy(message)">
<div>Created by: {{message.createdBy.name}}</div>
</div>
<div ng-if="showTo(message)">
<div>To: {{message.to.name}}</div>
</div>
</div>
replaceWith() is used to remove unneeded content from the DOM.
Also, as I mentioned on Google+, ng-style can probably be used to conditionally load background images, should you want to use ng-show instead of a custom directive. (For the benefit of other readers, Jon stated on Google+: "both methods use ng-show which I'm trying to avoid because it uses display:none and leaves extra markup in the DOM. This is a particular problem in this scenario because the hidden element will have a background image which will still be loaded in most browsers.").
See also How do I conditionally apply CSS styles in AngularJS?
The angular-ui ui-if directive watches for changes to the if condition/expression. Mine doesn't. So, while my simple implementation will update the view correctly if the model changes such that it only affects the template output, it won't update the view correctly if the condition/expression answer changes.
E.g., if the value of a from.name changes in the model, the view will update. But if you delete $scope.data.messages[0].from
, the from name will be removed from the view, but the template will not be removed from the view because the if-condition/expression is not being watched.
The standard requires the array length to be a value that is computable at compile time so that the compiler is able to allocate enough space on the stack. In your case, you are trying to set the array length to a value that is unknown at compile time. Yes, i know that it seems obvious that it should be known to the compiler, but this is not the case here. The compiler cannot make any assumptions about the contents of non-constant variables. So go with:
const int row = 8;
const int col= 8;
int a[row][col];
UPD: some compilers will actually allow you to pull this off. IIRC, g++ has this feature. However, never use it because your code will become un-portable across compilers.
You do not need to use substring at all since your format
doesn't hold that info.
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String fechaStr = "2013-10-10 10:49:29.10000";
Date fechaNueva = format.parse(fechaStr);
System.out.println(format.format(fechaNueva)); // Prints 2013-10-10 10:49:29
I encounter the same problem. I inited a bean object in static block like below:
static {
try{
mqttConfiguration = SpringBootBeanUtils.<MqttConfiguration>getBean(MqttConfiguration.class);
}catch (Throwable e){
System.out.println(e);
}
}
Just because the process the my bean obejct inition caused a NPE, I get trouble into it. So I think you should check you static code block carefully.
here and now in 2018
using var
for variable declaration is synonymous with public
as in
class Sample{
var $usingVar;
public $usingPublic;
function .....
}
If you are early into the development cycle you can try this -
Remove/comment that model and all its usages. Apply migrations. That would delete that model and then add the model again, run migrations and you have a clean model with the new field added.
You can config global timezone with the library tzdata:
npm install tzdata -y
After set your environment with the variable for example: TZ=America/Bogota
And testing in your project:
new Date()
I hope helpyou
use parseInt
var total = parseInt(a) + parseInt(b);
$('#total_price').val(total);
I've also had this happen (by accident) after creating a new venv while inside an existing virtual environment. an easy way to diagnose this would be to see where the python
is symlinked to, i.e. run:
ls -l venv/bin/python
and make sure it points to the appropriate Python binary. For most systems this will be /usr/bin/python
or /usr/bin/python3
. while if it points to an existing virtual environment it'll be something like /home/youruser/somedir/bin/python
. if it's the latter than I'd suggest recreating the venv while making sure that you aren't "inside" any existing virtualenv (i.e. run deactivate
)
Homebrew does NOT replace stuff in "/usr/bin". You'll just want to put "/usr/local/bin" ahead of "/usr/bin" in your path, then "which python" will give you "/usr/local/bin/python".
Replacing /usr/bin/python (or /usr/bin/ruby) is highly unrecommended.
eplawless's own answer simply and effectively solves his specific problem: it replaces all "
instances in the entire argument list with \"
, which is how Bash requires double-quotes inside a double-quoted string to be represented.
To generally answer the question of how to escape double-quotes inside a double-quoted string using cmd.exe
, the Windows command-line interpreter (whether on the command line - often still mistakenly called the "DOS prompt" - or in a batch file):See bottom for a look at PowerShell.
tl;dr:
You must use ""
when passing a string to a(nother) batch file and you may use ""
with applications created with Microsoft's C/C++/.NET compilers (which also accept \"
), which on Windows includes Python and Node.js:
Example: foo.bat "We had 3"" of rain."
The following applies to batch files only:
""
is the only way to get the command interpreter (cmd.exe
) to treat the whole double-quoted string as a single argument.
Sadly, however, not only are the enclosing double-quotes retained (as usual), but so are the doubled escaped ones, so obtaining the intended string is a two-step process; e.g., assuming that the double-quoted string is passed as the 1st argument, %1
:
set "str=%~1"
removes the enclosing double-quotes; set "str=%str:""="%"
then converts the doubled double-quotes to single ones.
Be sure to use the enclosing double-quotes around the assignment parts to prevent unwanted interpretation of the values.
\"
is required - as the only option - by many other programs, (e.g., Ruby, Perl, and even Microsoft's own Windows PowerShell(!)), but ITS USE IS NOT SAFE:
\"
is what many executables and interpreters either require - including Windows PowerShell - when passed strings from the outside - or, in the case of Microsoft's compilers, support as an alternative to ""
- ultimately, though, it's up to the target program to parse the argument list.
foo.exe "We had 3\" of rain."
\"
CAN RESULT IN UNWANTED, ARBITRARY EXECUTION OF COMMANDS and/or INPUT/OUTPUT REDIRECTIONS:
& | < >
ver
command; see further below for an explanation and the next bullet point for a workaround:
foo.exe "3\" of snow" "& ver."
\""
and "^""
are robust, but limited alternatives (see section "Calling PowerShell's CLI ..." below).If you must use \"
, there are only 3 safe approaches, which are, however quite cumbersome: Tip of the hat to T S for his help.
Using (possibly selective) delayed variable expansion in your batch file, you can store literal \"
in a variable and reference that variable inside a "..."
string using !var!
syntax - see T S's helpful answer.
Only with LITERAL strings - ones NOT involving VARIABLES - do you get a similarly methodical approach: categorically ^
-escape all cmd.exe
metacharacters: " & | < >
and - if you also want to suppress variable expansion - %
:
foo.exe ^"3\^" of snow^" ^"^& ver.^"
Otherwise, you must formulate your string based on recognizing which portions of the string cmd.exe
considers unquoted due to misinterpreting \"
as closing delimiters:
in literal portions containing shell metacharacters: ^
-escape them; using the example above, it is &
that must be ^
-escaped:
foo.exe "3\" of snow" "^& ver."
in portions with %...%
-style variable references: ensure that cmd.exe
considers them part of a "..."
string and that that the variable values do not themselves have embedded, unbalanced quotes - which is not even always possible.
For background information, read on.
Note: This is based on my own experiments. Do let me know if I'm wrong.
POSIX-like shells such as Bash on Unix-like systems tokenize the argument list (string) before passing arguments individually to the target program: among other expansions, they split the argument list into individual words (word splitting) and remove quoting characters from the resulting words (quote removal). The target program is handed an array of individual arguments, with syntactic quotes removed.
By contrast, the Windows command interpreter apparently does not tokenize the argument list and simply passes the single string comprising all arguments - including quoting chars. - to the target program.
However, some preprocessing takes place before the single string is passed to the target program: ^
escape chars. outside of double-quoted strings are removed (they escape the following char.), and variable references (e.g., %USERNAME%
) are interpolated first.
Thus, unlike in Unix, it is the target program's responsibility to parse to parse the arguments string and break it down into individual arguments with quotes removed. Thus, different programs can hypothetically require differing escaping methods and there's no single escaping mechanism that is guaranteed to work with all programs - https://stackoverflow.com/a/4094897/45375 contains excellent background on the anarchy that is Windows command-line parsing.
In practice, \"
is very common, but NOT SAFE, as mentioned above:
Since cmd.exe
itself doesn't recognize \"
as an escaped double-quote, it can misconstrue later tokens on the command line as unquoted and potentially interpret them as commands and/or input/output redirections.
In a nutshell: the problem surfaces, if any of the following characters follow an opening or unbalanced \"
: & | < >
; for example:
foo.exe "3\" of snow" "& ver."
cmd.exe
sees the following tokens, resulting from misinterpreting \"
as a regular double-quote:
"3\"
of
snow" "
& ver.
Since cmd.exe
thinks that & ver.
is unquoted, it interprets it as &
(the command-sequencing operator), followed by the name of a command to execute (ver.
- the .
is ignored; ver
reports cmd.exe
's version information).
The overall effect is:
foo.exe
is invoked with the first 3 tokens only.ver
is executed.Even in cases where the accidental command does no harm, your overall command won't work as designed, given that not all arguments are passed to it.
Many compilers / interpreters recognize ONLY \"
- e.g., the GNU C/C++ compiler, Python, Perl, Ruby, even Microsoft's own Windows PowerShell when invoked from cmd.exe
- and, except (with limitations) for Windows PowerShell with \""
, for them there is no simple solution to this problem.
Essentially, you'd have to know in advance which portions of your command line are misinterpreted as unquoted, and selectively ^
-escape all instances of & | < >
in those portions.
By contrast, use of ""
is SAFE, but is regrettably only supported by Microsoft-compiler-based executables and batch files (in the case of batch files, with the quirks discussed above), which notable excludes PowerShell - see next section.
cmd.exe
or POSIX-like shells:Note: See the bottom section for how quoting is handled inside PowerShell.
When invoked from the outside - e.g., from cmd.exe
, whether from the command line or a batch file:
PowerShell [Core] v6+ now properly recognizes ""
(in addition to \"
), which is both safe to use and whitespace-preserving.
pwsh -c " ""a & c"".length "
doesn't break and correctly yields 6
Windows PowerShell (the legacy edition whose last version is 5.1) recognizes only \"
and, on Windows also """
and the more robust \""
/ "^""
(even though internally PowerShell uses `
as the escape character in double-quoted strings and also accepts ""
- see bottom section):
Calling Windows PowerShell from cmd.exe
/ a batch file:
""
breaks, because it is fundamentally unsupported:
powershell -c " ""ab c"".length "
-> error "The string is missing the terminator"\"
and """
work in principle, but aren't safe:
powershell -c " \"ab c\".length "
works as intended: it outputs 5
(note the 2 spaces)cmd.exe
metacharacters break the command, unless escaped:powershell -c " \"a& c\".length "
breaks, due to the &
, which would have to be escaped as ^&
\""
is safe, but normalize interior whitespace, which can be undesired:
powershell -c " \""a& c\"".length "
outputs 4
(!), because the 2 spaces are normalized to 1."^""
is the best choice for Windows PowerShell specifically, where it is both safe and whitespace-preserving, but with PowerShell Core (on Windows) it is the same as \""
, i.e, whitespace-normalizing. Credit goes to Venryx for discovering this approach.
powershell -c " "^""a& c"^"".length "
works: doesn't break - despite &
- and outputs 5
, i.e., correctly preserved whitespace.
PowerShell Core: pwsh -c " "^""a& c"^"".length "
works, but outputs 4
, i.e. normalizes whitespace, as \""
does.
On Unix-like platforms (Linux, macOS), when calling PowerShell [Core]'s CLI, pwsh
, from a POSIX-like shell such as bash
:
You must use \"
, which, however is both safe and whitespace-preserving:
$ pwsh -c " \"a& c|\".length" # OK: 5
^
can only be used as the escape character in unquoted strings - inside double-quoted strings, ^
is not special and treated as a literal.
^
in parameters passed to the call
statement is broken (this applies to both uses of call
: invoking another batch file or binary, and calling a subroutine in the same batch file):
^
instances in double-quoted values are inexplicably doubled, altering the value being passed: e.g., if variable %v%
contains literal value a^b
, call :foo "%v%"
assigns "a^^b"
(!) to %1
(the first parameter) in subroutine :foo
.^
with call
is broken altogether in that ^
can no longer be used to escape special characters: e.g., call foo.cmd a^&b
quietly breaks (instead of passing literal a&b
too foo.cmd
, as would be the case without call
) - foo.cmd
is never even invoked(!), at least on Windows 7.Escaping a literal %
is a special case, unfortunately, which requires distinct syntax depending on whether a string is specified on the command line vs. inside a batch file; see https://stackoverflow.com/a/31420292/45375
%%
. On the command line, %
cannot be escaped, but if you place a ^
at the start, end, or inside a variable name in an unquoted string (e.g., echo %^foo%
), you can prevent variable expansion (interpolation); %
instances on the command line that are not part of a variable reference are treated as literals (e.g, 100%
).Generally, to safely work with variable values that may contain spaces and special characters:
set "v=a & b"
assigns literal value a & b
to variable %v%
(by contrast, set v="a & b"
would make the double-quotes part of the value). Escape literal %
instances as %%
(works only in batch files - see above).echo "%v%"
does not subject the value of %v%
to interpolation and prints "a & b"
(but note that the double-quotes are invariably printed too). By contrast, echo %v%
passes literal a
to echo
, interprets &
as the command-sequencing operator, and therefore tries to execute a command named b
.^
with the call
statement.%~1
to remove enclosing double-quotes from the 1st parameter) and, sadly, there is no direct way that I know of to get echo
to print a variable value faithfully without the enclosing double-quotes.
for
-based workaround that works as long as the value has no embedded double quotes; e.g.:set "var=^&')|;,%!"
for /f "delims=" %%v in ("%var%") do echo %%~v
cmd.exe
does not recognize single-quotes as string delimiters - they are treated as literals and cannot generally be used to delimit strings with embedded whitespace; also, it follows that the tokens abutting the single-quotes and any tokens in between are treated as unquoted by cmd.exe
and interpreted accordingly.
cmd.exe
.Windows PowerShell is a much more advanced shell than cmd.exe
, and it has been a part of Windows for many years now (and PowerShell Core brought the PowerShell experience to macOS and Linux as well).
PowerShell works consistently internally with respect to quoting:
`"
or ""
to escape double-quotes''
to escape single-quotesThis works on the PowerShell command line and when passing parameters to PowerShell scripts or functions from within PowerShell.
(As discussed above, passing an escaped double-quote to PowerShell from the outside requires \"
or, more robustly, \""
- nothing else works).
Sadly, when invoking external programs from PowerShell, you're faced with the need to both accommodate PowerShell's own quoting rules and to escape for the target program:
This problematic behavior is also discussed and summarized in this answer
Double-quotes inside double-quoted strings:
Consider string "3`" of rain"
, which PowerShell-internally translates to literal 3" of rain
.
If you want to pass this string to an external program, you have to apply the target program's escaping in addition to PowerShell's; say you want to pass the string to a C program, which expects embedded double-quotes to be escaped as \"
:
foo.exe "3\`" of rain"
Note how both `"
- to make PowerShell happy - and the \
- to make the target program happy - must be present.
The same logic applies to invoking a batch file, where ""
must be used:
foo.bat "3`"`" of rain"
By contrast, embedding single-quotes in a double-quoted string requires no escaping at all.
Single-quotes inside single-quoted strings do not require extra escaping; consider '2'' of snow'
, which is PowerShell' representation of 2' of snow
.
foo.exe '2'' of snow'
foo.bat '2'' of snow'
PowerShell translates single-quoted strings to double-quoted ones before passing them to the target program.
However, double-quotes inside single-quoted strings, which do not need escaping for PowerShell, do still need to be escaped for the target program:
foo.exe '3\" of rain'
foo.bat '3"" of rain'
PowerShell v3 introduced the magic --%
option, called the stop-parsing symbol, which alleviates some of the pain, by passing anything after it uninterpreted to the target program, save for cmd.exe
-style environment-variable references (e.g., %USERNAME%
), which are expanded; e.g.:
foo.exe --% "3\" of rain" -u %USERNAME%
Note how escaping the embedded "
as \"
for the target program only (and not also for PowerShell as \`"
) is sufficient.
However, this approach:
%
characters in order to avoid environment-variable expansions.Invoke-Expression
in a second.Thus, despite its many advancements, PowerShell has not made escaping much easier when calling external programs. It has, however, introduced support for single-quoted strings.
I wonder if it's fundamentally possible in the Windows world to ever switch to the Unix model of letting the shell do all the tokenization and quote removal predictably, up front, irrespective of the target program, and then invoke the target program by passing the resulting tokens.
This is because PHP reads your value as a string. If I don't want to pass my data as an object (like in the previous answers, which are also fine), I just do this in my PHP:
$activitiesString = $_POST['activitiesArray'];
$activitiesArray = (explode(",",$activitiesString));
The last line splits string into bits after every comma. Now $activitiesArray is also an array. It works even if there is no comma (only one element in your javascript array).
Happy coding!
Pre-append your commands with sudo
.
For example, Instead of vim textfile.txt
, used sudo vim textfile.txt
. This will resolve the issue.
Adding to @Paul Woolcock's answer,
pip freeze > requirements.txt
will create a requirements file with all installed packages along with the installed version numbers in the active environment at the current location. Running
pip install -r requirements.txt
will install the packages specified in the requirements file.
To download file on flask call. File name is Examples.pdf When I am hitting 127.0.0.1:5000/download it should get download.
Example:
from flask import Flask
from flask import send_file
app = Flask(__name__)
@app.route('/download')
def downloadFile ():
#For windows you need to use drive name [ex: F:/Example.pdf]
path = "/Examples.pdf"
return send_file(path, as_attachment=True)
if __name__ == '__main__':
app.run(port=5000,debug=True)
well, I have spent some time on your date format.....
however, finally i worked it out..
let's take an example file (named logFile), i made it a bit short. say, you want to get last 5 mins' log in this file:
172.16.0.3 - - [31/Mar/2002:19:20:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:20:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:20:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:20:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:20:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:20:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:20:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:20:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:20:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:20:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:20:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:20:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:20:41 +0200] "GET
### lines below are what you want (5 mins till the last record)
172.16.0.3 - - [31/Mar/2002:19:27:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:27:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:27:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:27:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:27:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:27:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:27:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:27:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:27:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:27:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:27:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:27:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:27:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:27:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:30:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:30:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:30:41 +0200] "GET
172.16.0.3 - - [31/Mar/2002:19:30:41 +0200] "GET
here is the solution:
# this variable you could customize, important is convert to seconds.
# e.g 5days=$((5*24*3600))
x=$((5*60)) #here we take 5 mins as example
# this line get the timestamp in seconds of last line of your logfile
last=$(tail -n1 logFile|awk -F'[][]' '{ gsub(/\//," ",$2); sub(/:/," ",$2); "date +%s -d \""$2"\""|getline d; print d;}' )
#this awk will give you lines you needs:
awk -F'[][]' -v last=$last -v x=$x '{ gsub(/\//," ",$2); sub(/:/," ",$2); "date +%s -d \""$2"\""|getline d; if (last-d<=x)print $0 }' logFile
output:
172.16.0.3 - - 31 Mar 2002 19:27:41 +0200 "GET
172.16.0.3 - - 31 Mar 2002 19:27:41 +0200 "GET
172.16.0.3 - - 31 Mar 2002 19:27:41 +0200 "GET
172.16.0.3 - - 31 Mar 2002 19:27:41 +0200 "GET
172.16.0.3 - - 31 Mar 2002 19:27:41 +0200 "GET
172.16.0.3 - - 31 Mar 2002 19:27:41 +0200 "GET
172.16.0.3 - - 31 Mar 2002 19:27:41 +0200 "GET
172.16.0.3 - - 31 Mar 2002 19:27:41 +0200 "GET
172.16.0.3 - - 31 Mar 2002 19:27:41 +0200 "GET
172.16.0.3 - - 31 Mar 2002 19:27:41 +0200 "GET
172.16.0.3 - - 31 Mar 2002 19:27:41 +0200 "GET
172.16.0.3 - - 31 Mar 2002 19:27:41 +0200 "GET
172.16.0.3 - - 31 Mar 2002 19:27:41 +0200 "GET
172.16.0.3 - - 31 Mar 2002 19:27:41 +0200 "GET
172.16.0.3 - - 31 Mar 2002 19:30:41 +0200 "GET
172.16.0.3 - - 31 Mar 2002 19:30:41 +0200 "GET
172.16.0.3 - - 31 Mar 2002 19:30:41 +0200 "GET
172.16.0.3 - - 31 Mar 2002 19:30:41 +0200 "GET
EDIT
you may notice that in the output the [ and ] are disappeared. If you do want them back, you can change the last awk line print $0
-> print $1 "[" $2 "]" $3
=IF(A2="Y","Male",IF(A2="N","Female",""))
<?php
//Loading all php files into of functions/ folder
$folder = "./functions/";
$files = glob($folder."*.php"); // return array files
foreach($files as $phpFile){
require_once("$phpFile");
}
I think you'll struggle with keyup event - as it first triggers keypress - and you won't be able to stop the propagation of the second one if you want to exclude the Enter Key.
I interpreted the question as using cast on a subquery. Yes, you can do that:
select cast((<subquery>) as <newtype>)
If you do so, then you need to be sure that the returns one row and one value. And, since it returns one value, you could put the cast in the subquery instead:
select (select cast(<val> as <newtype>) . . .)
If you get the error "Unrecognized attribute 'enableSsl'" when following the advice to add that parameter to your web.config. I found that I was able to workaround the error by adding it to my code file instead in this format:
SmtpClient smtp = new SmtpClient();
smtp.EnableSsl = true;
try
{
smtp.Send(mm);
}
catch (Exception ex)
{
MsgBox("Message not emailed: " + ex.ToString());
}
This is the system.net section of my web.config:
<system.net>
<mailSettings>
<smtp from="<from_email>">
<network host="smtp.gmail.com"
port="587"
userName="<your_email>"
password="<your_app_password>" />
</smtp>
</mailSettings>
</system.net>
Update November 2018
After working and blogging about MVC and MVP in Android for several years (see the body of the answer below), I decided to capture my knowledge and understanding in a more comprehensive and easily digestible form.
So, I released a full blown video course about Android applications architecture. So, if you're interested in mastering the most advanced architectural patterns in Android development, check out this comprehensive course here.
This answer was updated in order to remain relevant as of November 2016
It looks like you are seeking for architectural patterns rather than design patterns.
Design patterns aim at describing a general "trick" that programmer might implement for handling a particular set of recurring software tasks. For example: In OOP, when there is a need for an object to notify a set of other objects about some events, the observer design pattern can be employed.
Since Android applications (and most of AOSP) are written in Java, which is object-oriented, I think you'll have a hard time looking for a single OOP design pattern which is NOT used on Android.
Architectural patterns, on the other hand, do not address particular software tasks - they aim to provide templates for software organization based on the use cases of the software component in question.
It sounds a bit complicated, but I hope an example will clarify: If some application will be used to fetch data from a remote server and present it to the user in a structured manner, then MVC might be a good candidate for consideration. Note that I said nothing about software tasks and program flow of the application - I just described it from user's point of view, and a candidate for an architectural pattern emerged.
Since you mentioned MVC in your question, I'd guess that architectural patterns is what you're looking for.
Historically, there were no official guidelines by Google about applications' architectures, which (among other reasons) led to a total mess in the source code of Android apps. In fact, even today most applications that I see still do not follow OOP best practices and do not show a clear logical organization of code.
But today the situation is different - Google recently released the Data Binding library, which is fully integrated with Android Studio, and, even, rolled out a set of architecture blueprints for Android applications.
Two years ago it was very hard to find information about MVC or MVP on Android. Today, MVC, MVP and MVVM has become "buzz-words" in the Android community, and we are surrounded by countless experts which constantly try to convince us that MVx is better than MVy. In my opinion, discussing whether MVx is better than MVy is totally pointless because the terms themselves are very ambiguous - just look at the answers to this question, and you'll realize that different people can associate these abbreviations with completely different constructs.
Due to the fact that a search for a best architectural pattern for Android has officially been started, I think we are about to see several more ideas come to light. At this point, it is really impossible to predict which pattern (or patterns) will become industry standards in the future - we will need to wait and see (I guess it is matter of a year or two).
However, there is one prediction I can make with a high degree of confidence: Usage of the Data Binding library will not become an industry standard. I'm confident to say that because the Data Binding library (in its current implementation) provides short-term productivity gains and some kind of architectural guideline, but it will make the code non-maintainable in the long run. Once long-term effects of this library will surface - it will be abandoned.
Now, although we do have some sort of official guidelines and tools today, I, personally, don't think that these guidelines and tools are the best options available (and they are definitely not the only ones). In my applications I use my own implementation of an MVC architecture. It is simple, clean, readable and testable, and does not require any additional libraries.
This MVC is not just cosmetically different from others - it is based on a theory that Activities in Android are not UI Elements, which has tremendous implications on code organization.
So, if you're looking for a good architectural pattern for Android applications that follows SOLID principles, you can find a description of one in my post about MVC and MVP architectural patterns in Android.
wrap the table in a div with class="container"
div.container {
width: 100%;
overflow-x: auto;
}
then
#table_id tr td {
white-space:nowrap;
}
result
The database size does matter. If you have more than one table with more than a million records, then performance starts indeed to degrade. The number of records does of course affect the performance: MySQL can be slow with large tables. If you hit one million records you will get performance problems if the indices are not set right (for example no indices for fields in "WHERE statements" or "ON conditions" in joins). If you hit 10 million records, you will start to get performance problems even if you have all your indices right. Hardware upgrades - adding more memory and more processor power, especially memory - often help to reduce the most severe problems by increasing the performance again, at least to a certain degree. For example 37 signals went from 32 GB RAM to 128GB of RAM for the Basecamp database server.
You can check if the error is of type WebException
and then inspect the response code;
if (e.Error.GetType().Name == "WebException")
{
WebException we = (WebException)e.Error;
HttpWebResponse response = (System.Net.HttpWebResponse)we.Response;
if (response.StatusCode==HttpStatusCode.NotFound)
System.Diagnostics.Debug.WriteLine("Not found!");
}
or
try
{
// send request
}
catch (WebException e)
{
// check e.Status as above etc..
}
I also encounter with that problem. In my case the problem was that i closed the scanner inside one of the funcs..
public class Main _x000D_
{_x000D_
public static void main(String[] args) _x000D_
{_x000D_
Scanner menu = new Scanner(System.in);_x000D_
boolean exit = new Boolean(false);_x000D_
while(!exit){_x000D_
String choose = menu.nextLine();_x000D_
Part1 t=new Part1()_x000D_
t.start();_x000D_
System.out.println("Noooooo Come back!!!"+choose);_x000D_
}_x000D_
menu.close();_x000D_
}_x000D_
}_x000D_
_x000D_
public class Part1 extends Thread _x000D_
{_x000D_
public void run()_x000D_
{ _x000D_
Scanner s = new Scanner(System.in);_x000D_
String st = s.nextLine();_x000D_
System.out.print("bllaaaaaaa\n"+st);_x000D_
s.close();_x000D_
}_x000D_
}_x000D_
_x000D_
_x000D_
The code above made the same exaption, the solution was to close the scanner only once at the main.
If you are trying to do that in a Portable Class Library PCL (like me), then here is how you can do it :)
public class Foo
{
public string A {get;set;}
[Special]
public string B {get;set;}
}
var type = typeof(Foo);
var specialProperties = type.GetRuntimeProperties()
.Where(pi => pi.PropertyType == typeof (string)
&& pi.GetCustomAttributes<Special>(true).Any());
You can then check on the number of properties that have this special property if you need to.
Find all word and space characters up to and including a -
^[\w ]+-
Or you can do this alternatively with "forEach()":
var cubes = [
[1, 2, 3],
[4, 5, 6],
[7, 8, 9],
];
cubes.forEach(function each(item) {
if (Array.isArray(item)) {
// If is array, continue repeat loop
item.forEach(each);
} else {
console.log(item);
}
});
If you need array's index, please try this code:
var i = 0; j = 0;
cubes.forEach(function each(item) {
if (Array.isArray(item)) {
// If is array, continue repeat loop
item.forEach(each);
i++;
j = 0;
} else {
console.log("[" + i + "][" + j + "] = " + item);
j++;
}
});
And the result will look like this:
[0][0] = 1
[0][1] = 2
[0][2] = 3
[1][0] = 4
[1][1] = 5
[1][2] = 6
[2][0] = 7
[2][1] = 8
[2][2] = 9
*X*YZ* = string contains X and contains YZ
@".*X.*YZ"
X*YZ*P = string starts with X, contains YZ and ends with P.
@"^X.*YZ.*P$"
public static LocalDate Date2LocalDate(Date date) {
return LocalDate.parse(date.toString(), DateTimeFormatter.ofPattern("EEE MMM dd HH:mm:ss zzz yyyy"))
this format is from Date#tostring
public String toString() {
// "EEE MMM dd HH:mm:ss zzz yyyy";
BaseCalendar.Date date = normalize();
StringBuilder sb = new StringBuilder(28);
int index = date.getDayOfWeek();
if (index == BaseCalendar.SUNDAY) {
index = 8;
}
convertToAbbr(sb, wtb[index]).append(' '); // EEE
convertToAbbr(sb, wtb[date.getMonth() - 1 + 2 + 7]).append(' '); // MMM
CalendarUtils.sprintf0d(sb, date.getDayOfMonth(), 2).append(' '); // dd
CalendarUtils.sprintf0d(sb, date.getHours(), 2).append(':'); // HH
CalendarUtils.sprintf0d(sb, date.getMinutes(), 2).append(':'); // mm
CalendarUtils.sprintf0d(sb, date.getSeconds(), 2).append(' '); // ss
TimeZone zi = date.getZone();
if (zi != null) {
sb.append(zi.getDisplayName(date.isDaylightTime(), TimeZone.SHORT, Locale.US)); // zzz
} else {
sb.append("GMT");
}
sb.append(' ').append(date.getYear()); // yyyy
return sb.toString();
}
In case your contentSize is not correct this is because it is based on the estimatedRowHeight (automatic), use this before
tableView.estimatedRowHeight = 0;
The following code will work:
private WebView mWebView;
final Activity activity = this;
// private Button b;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mWebView = (WebView) findViewById(R.id.webview);
mWebView.getSettings().setJavaScriptEnabled(true);
mWebView.getSettings().setDomStorageEnabled(true);
mWebView.setWebChromeClient(new WebChromeClient() {
public void onProgressChanged(WebView view, int progress) {
activity.setProgress(progress * 1000);
}
});
mWebView.loadUrl("file:///android_asset/raw/NewFile1.html");
}
The solution is actually described here: http://www.anujgakhar.com/2013/06/15/duplicates-in-a-repeater-are-not-allowed-in-angularjs/
AngularJS does not allow duplicates in a ng-repeat directive. This means if you are trying to do the following, you will get an error.
// This code throws the error "Duplicates in a repeater are not allowed.
// Repeater: row in [1,1,1] key: number:1"
<div ng-repeat="row in [1,1,1]">
However, changing the above code slightly to define an index to determine uniqueness as below will get it working again.
// This will work
<div ng-repeat="row in [1,1,1] track by $index">
Official docs are here: https://docs.angularjs.org/error/ngRepeat/dupes
For repeating an action in the future, there is the built in setInterval
function that you can use instead of setTimeout
.
It has a similar signature, so the transition from one to another is simple:
setInterval(function() {
// do stuff
}, duration);
Just for an additional reference.
All of the above answers will work in case of a data frame. But if you are using lambda while creating / modify a column this won't work, Because there it is considered as a int attribute instead of pandas series. You have to use str( target_attribute ) to make it as a string. Please refer the below example.
def add_zero_in_prefix(df):
if(df['Hour']<10):
return '0' + str(df['Hour'])
data['str_hr'] = data.apply(add_zero_in_prefix, axis=1)
Here is usage of Math.PI
to find circumference of circle and Area
First we take Radius as a string in Message Box and convert it into integer
public class circle {
public static void main(String[] args) {
// TODO code application logic here
String rad;
float radius,area,circum;
rad = JOptionPane.showInputDialog("Enter the Radius of circle:");
radius = Integer.parseInt(rad);
area = (float) (Math.PI*radius*radius);
circum = (float) (2*Math.PI*radius);
JOptionPane.showMessageDialog(null, "Area: " + area,"AREA",JOptionPane.INFORMATION_MESSAGE);
JOptionPane.showMessageDialog(null, "circumference: " + circum, "Circumfernce",JOptionPane.INFORMATION_MESSAGE);
}
}
file()
is not supported in Python 3
Use open()
instead; see Built-in Functions - open().
DispatchQueue.main.async(execute: {
// code
})
you can use strbuilder.insert(0,i);
Inspired from @Aqua Answer.....
in Objective C
- (UIImage *)fixImageOrientation:(UIImage *)img {
UIGraphicsBeginImageContext(img.size);
[img drawAtPoint:CGPointZero];
UIImage *newImg = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
if (newImg) {
return newImg;
}
return img;
}
Try this:
myApp.service('userService', [
'$http', '$q', '$rootScope', '$location', function($http, $q, $rootScope, $location) {
var deferred= $q.defer();
this.user = {
access: false
};
try
{
this.isAuthenticated = function() {
this.user = {
first_name: 'First',
last_name: 'Last',
email: '[email protected]',
access: 'institution'
};
deferred.resolve();
};
}
catch
{
deferred.reject();
}
return deferred.promise;
]);
Here is what seems simplest and works in python 3.7
from collections import OrderedDict
d = OrderedDict([('method', 'constant'), ('data', '1.225')])
d2 = dict(d) # Now a normal dict
Now to check this:
>>> type(d2)
<class 'dict'>
>>> isinstance(d2, OrderedDict)
False
>>> isinstance(d2, dict)
True
NOTE: This also works, and gives same result -
>>> {**d}
{'method': 'constant', 'data': '1.225'}
>>> {**d} == d2
True
As well as this -
>>> dict(d)
{'method': 'constant', 'data': '1.225'}
>>> dict(d) == {**d}
True
Cheers
It's probably worth noting that IE won't cache css files called by other css files using the @import method. So, for example, if your html page links to "master.css" which pulls in "reset.css" via @import, then reset.css will not be cached by IE.
have you tried eager loading?
@attachments = Job.includes(:attachments).find(1).attachments
Take a step back! Firstly, you're assuming the user is using a foreign locale on their device, which is not a sound assumption for justifying taking over the button text of the file picker, and making it say what you want it to.
It is reasonable that you want to control every item of language visible on your page. The content of the File Upload control is not part of the HTML though. There is more content behind this control, for example, in WebKit, it also says "No file chosen" next to the button.
There are very hacky workarounds that attempt this (e.g. like those mentioned in @ChristopheD's answer), but none of them truly succeed:
Deviating from the native controls is always a risky thing, there is a whole host of different devices your users could be using, and whatever workaround you choose, you will not have tested it in every one of those devices.
However, there is an even bigger reason why all attempts fail from a User Experience perspective: there is even more non-localized content behind this control, the file selection dialog itself. Once the user is subject to traversing their file system or what not to select a file to upload, they will be subjected to the host Operating System locale.
Are you sure you're doing your user any justice by deviating from the native control, just to localize the text, when as soon as they click it, they're just going to get the Operating System locale anyway?
The best you can do for your users is to ensure you have adequate localised guidance surrounding your file input control. (e.g. Form field label, hint text, tooltip text).
Sorry. :-(
--
This answer is for those looking for any justification not to localise the file upload control.
import gzip
import shutil
with gzip.open('file.txt.gz', 'rb') as f_in:
with open('file.txt', 'wb') as f_out:
shutil.copyfileobj(f_in, f_out)
Using System.Linq
string withOutSpecialCharacters = new string(stringWithSpecialCharacters.Where(c =>char.IsLetterOrDigit(c) || char.IsWhiteSpace(c) || c == '-').ToArray());
Don't you need something to compare and then retrieve the milliseconds?
For instance:
let enteredDate = $("#txt-date").val(); // get the date entered in the input
let expires = moment.utc(enteredDate); // convert it into UTC
With that you have the expiring date in UTC. Now you can get the "right-now" date in UTC and compare:
var rightNowUTC = moment.utc(); // get this moment in UTC based on browser
let duration = moment.duration(rightNowUTC.diff(expires)); // get the diff
let remainingTimeInMls = duration.asMilliseconds();
To interact with the box you need to update the state for the checkbox once you change it. And to have a default setting you can use defaultChecked
.
An example:
<input type="checkbox" defaultChecked={this.state.chkbox} onChange={this.handleChangeChk} />
I saw different answers and came up with a class helper:
using System;
using System.Web.Mvc;
namespace MyMvcApp.Helpers {
public class LocationHelper {
public static bool IsCurrentControllerAndAction(string controllerName, string actionName, ViewContext viewContext) {
bool result = false;
string normalizedControllerName = controllerName.EndsWith("Controller") ? controllerName : String.Format("{0}Controller", controllerName);
if(viewContext == null) return false;
if(String.IsNullOrEmpty(actionName)) return false;
if (viewContext.Controller.GetType().Name.Equals(normalizedControllerName, StringComparison.InvariantCultureIgnoreCase) &&
viewContext.Controller.ValueProvider.GetValue("action").AttemptedValue.Equals(actionName, StringComparison.InvariantCultureIgnoreCase)) {
result = true;
}
return result;
}
}
}
So in View (or master/layout) you can use it like so (Razor syntax):
<div id="menucontainer">
<ul id="menu">
<li @if(MyMvcApp.Helpers.LocationHelper.IsCurrentControllerAndAction("home", "index", ViewContext)) {
@:class="selected"
}>@Html.ActionLink("Home", "Index", "Home")</li>
<li @if(MyMvcApp.Helpers.LocationHelper.IsCurrentControllerAndAction("account","logon", ViewContext)) {
@:class="selected"
}>@Html.ActionLink("Logon", "Logon", "Account")</li>
<li @if(MyMvcApp.Helpers.LocationHelper.IsCurrentControllerAndAction("home","about", ViewContext)) {
@:class="selected"
}>@Html.ActionLink("About", "About", "Home")</li>
</ul>
</div>
Hope it helps.
Another idea: Compensate for your margin on the opposite side of the div.
For the side with the spacing you are looking to achieve as an example: 10px, and for the opposing side, compensate with a -10px. It works for me. This likely won't work in all scenarios, but depending on your layout and spacing of other elements, it might work great.
I would always recommend going to the authoritative source when trying to understand the meaning and purpose of HTTP headers.
The "Host" header field in a request provides the host and port
information from the target URI, enabling the origin server to
distinguish among resources while servicing requests for multiple
host names on a single IP address.
To search the whole computer:
gdr -PSProvider 'FileSystem' | %{ ls -r $.root} 2>$null | where { $.name -eq "httpd.exe" }
I am pretty sure this is a much less efficient command, for MANY reasons, but the simplest is your piping everything to your where-object command, when you could still use -filter "httpd.exe" and save a ton of cycles.
Also, on a lot of computers the get-psdrive is gonna grab shared drives, and I am pretty sure you wanted that to get a complete search. Most shares can be IMMENSE with regard to the sheer number of files and folders, so at the very least I would sort my drives by size, and add a check after each search to exit the loop if we locate the file. That is if you are looking for a single instance, if not the only way to save yourself the IMMENSE time sink of searching a 10TB share or two, is to comment the command and highly suggest any user who were to need to use it should limit their search as much as they can. For instance our User Profile share is 10TB, at least the one I am on is, and I can limit my search to the directory $sharedrive\users\myname and search my 116GB directory rather than the 10TB one. Too many unknowns with shares for this type of script, which is already super inefficient with regard to resources and speed.
If I was seriously considering using something like this, I would add a call to a 3rd party package and leverage a DB.
The problem could be in Flex's SOAP encoder. Try extending the SOAP encoder in your Flex application and debug the program to see how the null value is handled.
My guess is, it's passed as NaN (Not a Number). This will mess up the SOAP message unmarshalling process sometime (most notably in the JBoss 5 server...). I remember extending the SOAP encoder and performing an explicit check on how NaN is handled.
You can use the path
module to join the path of the directory in which helper1.js
lives to the relative path of foobar.json
. This will give you the absolute path to foobar.json
.
var fs = require('fs');
var path = require('path');
var jsonPath = path.join(__dirname, '..', 'config', 'dev', 'foobar.json');
var jsonString = fs.readFileSync(jsonPath, 'utf8');
This should work on Linux, OSX, and Windows assuming a UTF8 encoding.
Get a random number. Is it stored in the array already? If not, store it. If so, then go get another random number and repeat.
import React from 'react'; <--as normal
import PropTypes from 'prop-types'; <--add this as a second line
App.propTypes = {
monkey: PropTypes.string, <--omit "React."
cat: PropTypes.number.isRequired <--omit "React."
};
Wrong: React.PropTypes.string
Right: PropTypes.string
You can do like this:
TimeZone tz = TimeZone.getDefault();
int offset = tz.getRawOffset();
String timeZone = String.format("%s%02d%02d", offset >= 0 ? "+" : "-", offset / 3600000, (offset / 60000) % 60);
If you want to delete everything from folder (including subfolders) use this combination of array_map
, unlink
and glob
:
array_map( 'unlink', array_filter((array) glob("path/to/temp/*") ) );
This call can also handle empty directories ( thanks for the tip, @mojuba!)