The way to determine the coordinates depends on what element you're working with. For circle
s for example, the cx
and cy
attributes determine the center position. In addition, you may have a translation
applied through the transform
attribute which changes the reference point of any coordinates.
Most of the ways used in general to get screen coordinates won't work for SVGs. In addition, you may not want absolute coordinates if the line you want to draw is in the same container as the elements it connects.
Edit:
In your particular code, it's quite difficult to get the position of the node because its determined by a translation of the parent element. So you need to get the transform attribute of the parent node and extract the translation from that.
d3.transform(d3.select(this.parentNode).attr("transform")).translate
Working jsfiddle here.
This code let you fill the banner to the maximum width and keep the ratio. This will only work in portrait. You must recreate the ad when you rotate the device. In landscape you should just leave the ad as is because it will be quite big an blurred.
Display display = getWindowManager().getDefaultDisplay();
int width = display.getWidth();
double ratio = ((float) (width))/300.0;
int height = (int)(ratio*50);
AdView adView = new AdView(this,"ad_url","my_ad_key",true,true);
LinearLayout layout = (LinearLayout) findViewById(R.id.testing);
mAdView.setLayoutParams(new FrameLayout.LayoutParams(LayoutParams.FILL_PARENT,height));
adView.setAdListener(this);
layout.addView(adView);
I included the JS and CSS file and was wondering why it is not working, what made it work was when I added the following in <head>
:
<script>
jQuery(function ($) {
$("a").tooltip()
});
</script>
I keep this extension method around for this:
public static void Each<T>(this IEnumerable<T> ie, Action<T, int> action)
{
var i = 0;
foreach (var e in ie) action(e, i++);
}
And use it like so:
var strings = new List<string>();
strings.Each((str, n) =>
{
// hooray
});
Or to allow for break
-like behaviour:
public static bool Each<T>(this IEnumerable<T> ie, Func<T, int, bool> action)
{
int i = 0;
foreach (T e in ie) if (!action(e, i++)) return false;
return true;
}
var strings = new List<string>() { "a", "b", "c" };
bool iteratedAll = strings.Each ((str, n)) =>
{
if (str == "b") return false;
return true;
});
The reason that appendChild
is not a function is because you're executing it on the textContent
of your p
element.
You instead just need to select the paragraph itself, and then append your new text node to that:
var paragraph = document.getElementById("p");_x000D_
var text = document.createTextNode("This just got added");_x000D_
_x000D_
paragraph.appendChild(text);
_x000D_
<p id="p">This is some text</p>
_x000D_
However instead, if you like, you can just modify the text itself (rather than adding a new node):
var paragraph = document.getElementById("p");_x000D_
_x000D_
paragraph.textContent += "This just got added";
_x000D_
<p id="p">This is some text</p>
_x000D_
If the issue is a missing intermediate certificate, you can enable Oracle JRE to automatically download the missing intermediate certificate as explained in this answer.
Just set the Java system property -Dcom.sun.security.enableAIAcaIssuers=true
For this to work the server's certificate must provide the URI to the intermediate certificate (the certificate's issuer). As far as I can tell, this is what browsers do as well and should be just as secure - I'm not a security expert though.
Edit: If I recall correctly, this seems to work at least with Java 8 and is documented here for Java 9.
@commonpike's answer is "the right one", but as he goes on to comment...
most browsers nowadays just support
Object.keys()
Yeah.. Object.keys()
is WAY better.
But what's even better? Duh, it's it in coffeescript
!
sortedKeys = (x) -> Object.keys(x).sort (a,b) -> x[a] - x[b]
sortedKeys
'a' : 1
'b' : 3
'c' : 4
'd' : -1
[ 'd', 'a', 'b', 'c' ]
I have also used the following to submit a form (without actually submitting it) via Ajax:
jQuery.get("process_form.php"+$("#form_id").serialize(), {},
function() {
alert("Okay!");
});
The exclamation point means many things, and sometimes you can't tell a lot from it other than "this is dangerous, be careful".
As others have said, in standard methods it's often used to indicate a method that causes an object to mutate itself, but not always. Note that many standard methods change their receiver and don't have an exclamation point (pop
, shift
, clear
), and some methods with exclamation points don't change their receiver (exit!
). See this article for example.
Other libraries may use it differently. In Rails an exclamation point often means that the method will throw an exception on failure rather than failing silently.
It's a naming convention but many people use it in subtly different ways. In your own code a good rule of thumbs is to use it whenever a method is doing something "dangerous", especially when two methods with the same name exist and one of them is more "dangerous" than the other. "Dangerous" can mean nearly anything though.
Just a little addition:
I believe it's a common and known thing to add exit;
after the header function in case we don't want the rest of the code to load or execute...
header('Location: ' . $_SERVER['HTTP_REFERER']);
exit;
Short of actually performing the merge in a throw away fashion (see Kasapo's answer), there doesn't seem to be a reliable way of seeing this.
Having said that, here's a method that comes marginally close:
git log TARGET_BRANCH...SOURCE_BRANCH --cherry
This gives a fair indication of which commits will make it into the merge. To see diffs, add -p
. To see file names, add any of --raw
, --stat
, --name-only
, --name-status
.
The problem with the git diff TARGET_BRANCH...SOURCE_BRANCH
approach (see Jan Hudec's answer) is, you'll see diffs for changes already in your target branch if your source branch contains cross merges.
Very simple:
df['C'] = df['A'] + df['B']
Here's a general solution:
def get_text_excluding_children(driver, element):
return driver.execute_script("""
return jQuery(arguments[0]).contents().filter(function() {
return this.nodeType == Node.TEXT_NODE;
}).text();
""", element)
The element passed to the function can be something obtained from the find_element...()
methods (i.e. it can be a WebElement
object).
Or if you don't have jQuery or don't want to use it you can replace the body of the function above above with this:
return self.driver.execute_script("""
var parent = arguments[0];
var child = parent.firstChild;
var ret = "";
while(child) {
if (child.nodeType === Node.TEXT_NODE)
ret += child.textContent;
child = child.nextSibling;
}
return ret;
""", element)
I'm actually using this code in a test suite.
Although the given list comprehension / generator expression answers are ok, I find this easier to read and understand:
values = ','.join(map(str, value_list))
If this is really slow, I suspect you're dealing with a large archive file. It's going to uncompress it once to extract the file list, and then uncompress it N times--where N is the number of files in the archive--for the grep. In addition to all the uncompressing, it's going to have to scan a fair bit into the archive each time to extract each file. One of tar
's biggest drawbacks is that there is no table of contents at the beginning. There's no efficient way to get information about all the files in the archive and only read that portion of the file. It essentially has to read all of the file up to the thing you're extracting every time; it can't just jump to a filename's location right away.
The easiest thing you can do to speed this up would be to uncompress the file first (gunzip file.tar.gz
) and then work on the .tar
file. That might help enough by itself. It's still going to loop through the entire archive N times, though.
If you really want this to be efficient, your only option is to completely extract everything in the archive before processing it. Since your problem is speed, I suspect this is a giant file that you don't want to extract first, but if you can, this will speed things up a lot:
tar zxf file.tar.gz
for f in hopefullySomeSubdir/*; do
grep -l "string" $f
done
Note that grep -l
prints the name of any matching file, quits after the first match, and is silent if there's no match. That alone will speed up the grepping portion of your command, so even if you don't have the space to extract the entire archive, grep -l
will help. If the files are huge, it will help a lot.
It is possible to print a 15 decimal number in C++ using the following:
#include <iomanip>
#include <iostream>
cout << fixed << setprecision(15) << " The Real_Pi is: " << real_pi << endl;
cout << fixed << setprecision(15) << " My Result_Pi is: " << my_pi << endl;
cout << fixed << setprecision(15) << " Processing error is: " << Error_of_Computing << endl;
cout << fixed << setprecision(15) << " Processing time is: " << End_Time-Start_Time << endl;
_getch();
return 0;
Simplest Definition of Looper & Handler:
Looper is a class that turns a thread into a Pipeline Thread and Handler gives you a mechanism to push tasks into it from any other threads.
Details in general wording:
So a PipeLine Thread is a thread which can accept more tasks from other threads through a Handler.
The Looper is named so because it implements the loop – takes the next task, executes it, then takes the next one and so on. The Handler is called a handler because it is used to handle or accept that next task each time from any other thread and pass to Looper (Thread or PipeLine Thread).
Example:
A Looper and Handler or PipeLine Thread's very perfect example is to download more than one images or upload them to a server (Http) one by one in a single thread instead of starting a new Thread for each network call in the background.
Read more here about Looper and Handler and the definition of Pipeline Thread:
Try setting a custom CultureInfo
for CurrentCulture
and CurrentUICulture
:
Globalization.CultureInfo customCulture = new Globalization.CultureInfo("en-US", true);
customCulture.DateTimeFormat.ShortDatePattern = "yyyy-MM-dd h:mm tt";
System.Threading.Thread.CurrentThread.CurrentCulture = customCulture;
System.Threading.Thread.CurrentThread.CurrentUICulture = customCulture;
DateTime newDate = System.Convert.ToDateTime(DateTime.Now.ToString("yyyy-MM-dd h:mm tt"));
I was getting this problem from my Dockerfile as I had:
RUN bash < <(curl -s -S -L https://raw.githubusercontent.com/moovweb/gvm/master/binscripts/gvm-installer)
However, according to this issue, it was solved:
The exec form makes it possible to avoid shell string munging, and to
RUN
commands using a base image that does not contain/bin/sh
.Note
To use a different shell, other than
/bin/sh
, use the exec form passing in the desired shell. For example,RUN ["/bin/bash", "-c", "echo hello"]
RUN ["/bin/bash", "-c", "bash < <(curl -s -S -L https://raw.githubusercontent.com/moovweb/gvm/master/binscripts/gvm-installer)"]
Notice the quotes around each parameter.
Best way is,
SELECT to_number(replace(:Str,',','')/100) --into num2
FROM dual;
The operators ||
and &&
are called conditional operators, while |
and &
are called bitwise operators. They serve different purposes.
Conditional operators works only with expressions that statically evaluate to boolean
on both left- and right-hand sides.
Bitwise operators works with any numeric operands.
If you want to perform a logical comparison, you should use conditional operators, since you will add some kind of type safety to your code.
here's a solution for those of you who can't access "numberformat" nor "String.format" (using a limited version of java inside a framework). Hope it's useful.
number= 123456789;
thousandsSeparator=",";
myNumberString=number.toString();
numberLength=myNumberString.length;
howManySeparators=Math.floor((numberLength-1)/3)
formattedString=myNumberString.substring(0,numberLength-(howManySeparators*3))
while (howManySeparators>0) {
formattedString=formattedString+thousandsSeparator+myNumberString.substring(numberLength-(howManySeparators*3),numberLength-((howManySeparators-1)*3));
howManySeparators=howManySeparators-1; }
formattedString
This workaround is dangerous and not recommended:
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
It's not a good idea to disable SSL peer verification. Doing so might expose your requests to MITM attackers.
In fact, you just need an up-to-date CA root certificate bundle. Installing an updated one is as easy as:
Downloading up-to-date cacert.pem
file from cURL website and
Setting a path to it in your php.ini file, e.g. on Windows:
curl.cainfo=c:\php\cacert.pem
That's it!
Stay safe and secure.
Here is my approach, clunky as it is and available in github:
Put in the very first notebook cell, the import cell:
from IPythonTOC import IPythonTOC
toc = IPythonTOC()
Somewhere after the import cell, put in the genTOCEntry cell but don't run it yet:
''' if you called toc.genTOCMarkdownCell before running this cell,
the title has been set in the class '''
print toc.genTOCEntry()
Below the genTOCEntry cell`, make a TOC cell as a markdown cell:
<a id='TOC'></a>
#TOC
As the notebook is developed, put this genTOCMarkdownCell before starting a new section:
with open('TOCMarkdownCell.txt', 'w') as outfile:
outfile.write(toc.genTOCMarkdownCell('Introduction'))
!cat TOCMarkdownCell.txt
!rm TOCMarkdownCell.txt
Move the genTOCMarkdownCell down to the point in your notebook where you want to start a new section and make the argument to genTOCMarkdownCell the string title for your new section then run it. Add a markdown cell right after it and copy the output from genTOCMarkdownCell into the markdown cell that starts your new section. Then go to the genTOCEntry cell near the top of your notebook and run it. For example, if you make the argument to genTOCMarkdownCell as shown above and run it, you get this output to paste into the first markdown cell of your newly indexed section:
<a id='Introduction'></a>
###Introduction
Then when you go to the top of your notebook and run genTocEntry, you get the output:
[Introduction](#Introduction)
Copy this link string and paste it into the TOC markdown cell as follows:
<a id='TOC'></a>
#TOC
[Introduction](#Introduction)
After you edit the TOC cell to insert the link string and then you press shift-enter, the link to your new section will appear in your notebook Table of Contents as a web link and clicking it will position the browser to your new section.
One thing I often forget is that clicking a line in the TOC makes the browser jump to that cell but doesn't select it. Whatever cell was active when we clicked on the TOC link is still active, so a down or up arrow or shift-enter refers to still active cell, not the cell we got by clicking on the TOC link.
Today i have this issue because i have implemented "bootstrap menu" that uses a jQuery version along with "fancybox image gallery". Of course one plugin works and the other not due to jQuery conflict but i have overcome it as follow:
First i have added the "bootstrap menu" Js in the script footer as the menu is presented allover the website pages:
<!-- Top Menu Javascript -->
<script type="text/javascript" src="js/jquery.min.js"></script>
<script type="text/javascript" src="js/bootstrap.min.js"></script>
<script type="text/javascript">
var jq171 = jQuery.noConflict(true);
</script>
And in the "fancybox" image gallery page as follow:
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<script>window.jQuery || document.write('<script src="fancybox/js/libs/jquery-1.7.1.min.js"><\/script>')</script>
And the good thing is both working like a charm :)
Give it a try :)
For posterity, I ran into this with an azure function, using the azure durable function / durable tasks framework. It turns out I had an outdated version of the azure functions runtime installed locally. updating it fixed it.
You probably want this (to make it like a normal CSS background-image declaration):
$('myObject').css('background-image', 'url(' + imageUrl + ')');
window.location.href = window.location.href;
Don't ask my why it works..but it does :). Just the way the js engine interprets the logic I suppose.
Build Solution - Build solution will build your application with building the number of projects which are having any file change. And it does not clear any existing binary files and just replacing updated assemblies in bin or obj folder.
Rebuild Solution - Rebuild solution will build your entire application with building all the projects are available in your solution with cleaning them. Before building it clears all the binary files from bin and obj folder.
Clean Solution - Clean solution is just clears all the binary files from bin and obj folder.
You can use only git log --oneline
Identify the hash of the commit, using git log
, then use git revert <commit>
to create a new commit that removes these changes. In a way, git revert
is the converse of git cherry-pick
-- the latter applies the patch to a branch that's missing it, the former removes it from a branch that has it.
I had a fully working project to which I was doing a minor change when this occured after updateting the SDK. Eclipse updated the SDK and the ADT but I could still not build the project. Exlipse said there were no further updates available.
The problem persisted until I manually uninstalled the ADT from eclipse and re-installed it. Only then would my project build. I had restarted eclipse inbetween each step.
n = int(raw_input("n= "))
def int_to_list(n):
l = []
while n != 0:
l = [n % 10] + l
n = n // 10
return l
print int_to_list(n)
I think it would look better if we add border-color : transparent as per below:
<hr style="width: 100%; background-color: black; height: 1px; border-color : transparent;" />
If you don't put the border transparent it will be white and i don't think that is good all time.
To use foreach
would require you have an array that contains every row from the query result. Some DB libraries for PHP provide a fetch_all
function that provides an appropriate array but I could not find one for mysql
(however the mysqli extension does) . You could of course write your own, like so
function mysql_fetch_all($result) {
$rows = array();
while ($row = mysql_fetch_array($result)) {
$rows[] = $row;
}
return $rows;
}
However I must echo the "why?" Using this function you are creating two loops instead of one, and requring the entire result set be loaded in to memory. For sufficiently large result sets, this could become a serious performance drag. And for what?
foreach (mysql_fetch_all($result) as $row)
vs
while ($row = mysql_fetch_array($result))
while
is just as concise and IMO more readable.
EDIT There is another option, but it is pretty absurd. You could use the Iterator Interface
class MysqlResult implements Iterator {
private $rownum = 0;
private $numrows = 0;
private $result;
public function __construct($result) {
$this->result = $result;
$this->numrows = mysql_num_rows($result);
}
public function rewind() {
$this->rownum = 0;
}
public function current() {
mysql_data_seek($this->result, $this->rownum);
return mysql_fetch_array($this->result);
}
public function key() {
return $this->rownum;
}
public function next() {
$this->rownum++;
}
public function valid() {
return $this->rownum < $this->numrows ? true : false;
}
}
$rows = new MysqlResult(mysql_query($query_select));
foreach ($rows as $row) {
//code...
}
In this case, the MysqlResult
instance fetches rows only on request just like with while
, but wraps it in a nice foreach-able package. While you've saved yourself a loop, you've added the overhead of class instantiation and a boat load of function calls, not to mention a good deal of added code complexity.
But you asked if it could be done without using while
(or for
I imagine). Well it can be done, just like that. Whether it should be done is up to you.
I was not using grid or pack.
I used just place for my widgets as their size and positioning was fixed.
I wanted to implement hide/show functionality on frame.
Here is demo
from tkinter import *
window=Tk()
window.geometry("1366x768+1+1")
def toggle_graph_visibility():
graph_state_chosen=show_graph_checkbox_value.get()
if graph_state_chosen==0:
frame.place_forget()
else:
frame.place(x=1025,y=165)
score_pixel = PhotoImage(width=300, height=430)
show_graph_checkbox_value = IntVar(value=1)
frame=Frame(window,width=300,height=430)
graph_canvas = Canvas(frame, width = 300, height = 430,scrollregion=(0,0,300,300))
my_canvas=graph_canvas.create_image(20, 20, anchor=NW, image=score_pixel)
vbar=Scrollbar(frame,orient=VERTICAL)
vbar.config(command=graph_canvas.yview)
vbar.pack(side=RIGHT,fill=Y)
graph_canvas.config(yscrollcommand=vbar.set)
graph_canvas.pack(side=LEFT,expand=True,fill=BOTH)
frame.place(x=1025,y=165)
Checkbutton(window, text="show graph",variable=show_graph_checkbox_value,command=toggle_graph_visibility).place(x=900,y=165)
window.mainloop()
Note that in above example when 'show graph' is ticked then there is vertical scrollbar.
Graph disappears when checkbox is unselected.
I was fitting some bar graph in that area which I have not shown to keep example simple.
Most important thing to learn from above is the use of frame.place_forget() to hide and frame.place(x=x_pos,y=y_pos) to show back the content.
If the database are in the same server use [DatabaseName].[Owner].[TableName]
format when accessing a table that resides in a different database.
Eg: [DB1].[dbo].[TableName]
If databases in different server look at on Creating Linked Servers (SQL Server Database Engine)
Just remove COLUMN
from ADD COLUMN
ALTER TABLE Employees
ADD EmployeeID numeric NOT NULL IDENTITY (1, 1)
ALTER TABLE Employees ADD CONSTRAINT
PK_Employees PRIMARY KEY CLUSTERED
(
EmployeeID
) WITH( STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF,
ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
selection opertion is used to select a subset of tuple from the relation that satisfied selection condition It filter out those tuple that satisfied the condition .Selection opertion can be visualized as horizontal partition into two set of tuple - those tuple satisfied the condition are selected and those tuple do not select the condition are discarded sigma (R) projection opertion is used to select a attribute from the relation that satisfied selection condition . It filter out only those tuple that satisfied the condition . The projection opertion can be visualized as a vertically partition into two part -are those satisfied the condition are selected other discarded ?(R) attribute list is a num of attribute
On many source packages (e.g. for most GNU software), the building system may know about the DESTDIR
make variable, so you can often do:
make install DESTDIR=/tmp/myinst/
sudo cp -va /tmp/myinst/ /
The advantage of this approach is that make install
don't need to run as root, so you cannot end up with files compiled as root (or root-owned files in your build tree).
In conf directory of apache tomcat you can find context.xml file. In that edit tag as <Context reloadable="true">. this should solve the issue and you need not restart the server
A space in a CSS selector selects child elements.
.btn input
This is basically what you wrote and it would select <input>
elements within any element that has the btn
class.
I think you're looking for
input[disabled].btn:hover, input[disabled].btn:active, input[disabled].btn:focus
This would select <input>
elements with the disabled
attribute and the btn
class in the three different states of hover
, active
and focus
.
Make both divs like this. This will align both divs side-by-side.
.my-class {
display : inline-flex;
}
You may also want to check your $PYTHONPATH
. I had changed mine in ~/.bashrc
in order to get another package to work.
To check your path:
echo $PYTHONPATH
To change your path (I use nano but you could edit another way)
nano ~/.bashrc
Look for the line with export PYTHONPATH
...
After making changes, don't forget to
source ~/.bashrc
Some benchmarks
1. reverseObjectEnumerator allObjects
This is the fastest method:
NSArray *anArray = @[@"aa", @"ab", @"ac", @"ad", @"ae", @"af", @"ag",
@"ah", @"ai", @"aj", @"ak", @"al", @"am", @"an", @"ao", @"ap", @"aq", @"ar", @"as", @"at",
@"au", @"av", @"aw", @"ax", @"ay", @"az", @"ba", @"bb", @"bc", @"bd", @"bf", @"bg", @"bh",
@"bi", @"bj", @"bk", @"bl", @"bm", @"bn", @"bo", @"bp", @"bq", @"br", @"bs", @"bt", @"bu",
@"bv", @"bw", @"bx", @"by", @"bz", @"ca", @"cb", @"cc", @"cd", @"ce", @"cf", @"cg", @"ch",
@"ci", @"cj", @"ck", @"cl", @"cm", @"cn", @"co", @"cp", @"cq", @"cr", @"cs", @"ct", @"cu",
@"cv", @"cw", @"cx", @"cy", @"cz"];
NSDate *methodStart = [NSDate date];
NSArray *reversed = [[anArray reverseObjectEnumerator] allObjects];
NSDate *methodFinish = [NSDate date];
NSTimeInterval executionTime = [methodFinish timeIntervalSinceDate:methodStart];
NSLog(@"executionTime = %f", executionTime);
Result: executionTime = 0.000026
2. Iterating over an reverseObjectEnumerator
This is between 1.5x and 2.5x slower:
NSDate *methodStart = [NSDate date];
NSMutableArray *array = [NSMutableArray arrayWithCapacity:[anArray count]];
NSEnumerator *enumerator = [anArray reverseObjectEnumerator];
for (id element in enumerator) {
[array addObject:element];
}
NSDate *methodFinish = [NSDate date];
NSTimeInterval executionTime = [methodFinish timeIntervalSinceDate:methodStart];
NSLog(@"executionTime = %f", executionTime);
Result: executionTime = 0.000071
3. sortedArrayUsingComparator
This is between 30x and 40x slower (no surprises here):
NSDate *methodStart = [NSDate date];
NSArray *reversed = [anArray sortedArrayUsingComparator: ^(id obj1, id obj2) {
return [anArray indexOfObject:obj1] < [anArray indexOfObject:obj2] ? NSOrderedDescending : NSOrderedAscending;
}];
NSDate *methodFinish = [NSDate date];
NSTimeInterval executionTime = [methodFinish timeIntervalSinceDate:methodStart];
NSLog(@"executionTime = %f", executionTime);
Result: executionTime = 0.001100
So [[anArray reverseObjectEnumerator] allObjects]
is the clear winner when it comes to speed and ease.
Yes, use gzip for this. The best way is to read data as input and redirect the compressed to output file i.e.
cat test.csv | gzip > test.csv.gz
cat test.csv
will send the data as stdout and using pipe-sign gzip will read that data as stdin. Make sure to redirect the gzip output to some file as compressed data will not be written to the terminal.
For me, with Visual Studio 2013, it wasn't enough to remove the license key and perform a repair (the repair restored the license key instead of reverting to a trial, and running it without the repair (after deleting the key) claimed the license had expired but wouldn't let me enter a new key).
I had to:
HKCR\Licenses\E79B3F9C-6543-4897-BBA5-5BFB0A02BB5C
)If you're using Python 3, or appropriate Python 2.x version with from __future__ import print_function
then:
data = [7, 7, 7, 7]
print(*data, sep='')
Otherwise, you'll need to convert to string and print:
print ''.join(map(str, data))
To use zookeeper commands with shell script try
zookeeper/bin/zkCli.sh -server localhost:2181 <<< "ls /brokers/ids" | tail -n 1. The last line usually has the response details
I want to collaborate a little with the solution for the server side. So, the server is saying it does not support DSA, this is because the openssh client does not activate it by default:
OpenSSH 7.0 and greater similarly disable the ssh-dss (DSA) public key algorithm. It too is weak and we recommend against its use.
So, to fix this this in the server side I should activate other Key algorithms like RSA o ECDSA. I just had this problem with a server in a lan. I suggest the following:
Update the openssh:
yum update openssh-server
Merge new configurations in the sshd_config if there is a sshd_config.rpmnew.
Verify there are hosts keys at /etc/ssh/. If not generate new ones, see man ssh-keygen
.
$ ll /etc/ssh/
total 580
-rw-r--r--. 1 root root 553185 Mar 3 2017 moduli
-rw-r--r--. 1 root root 1874 Mar 3 2017 ssh_config
drwxr-xr-x. 2 root root 4096 Apr 17 17:56 ssh_config.d
-rw-------. 1 root root 3887 Mar 3 2017 sshd_config
-rw-r-----. 1 root ssh_keys 227 Aug 30 15:33 ssh_host_ecdsa_key
-rw-r--r--. 1 root root 162 Aug 30 15:33 ssh_host_ecdsa_key.pub
-rw-r-----. 1 root ssh_keys 387 Aug 30 15:33 ssh_host_ed25519_key
-rw-r--r--. 1 root root 82 Aug 30 15:33 ssh_host_ed25519_key.pub
-rw-r-----. 1 root ssh_keys 1675 Aug 30 15:33 ssh_host_rsa_key
-rw-r--r--. 1 root root 382 Aug 30 15:33 ssh_host_rsa_key.pub
Verify in the /etc/ssh/sshd_config the HostKey configuration. It should allow the configuration of RSA and ECDSA. (If all of them are commented by default it will allow too the RSA, see in man sshd_config
the part of HostKey).
# HostKey for protocol version 1
#HostKey /etc/ssh/ssh_host_key
# HostKeys for protocol version 2
HostKey /etc/ssh/ssh_host_rsa_key
#HostKey /etc/ssh/ssh_host_dsa_key
HostKey /etc/ssh/ssh_host_ecdsa_key
HostKey /etc/ssh/ssh_host_ed25519_key
For the client side, create a key for ssh (not a DSA like in the question) by just doing this:
ssh-keygen
After this, because there are more options than ssh-dss(DSA) the client openssh (>=v7) should connect with RSA or better algorithm.
This is my first question answered, I welcome suggestions :D .
I have modified a bit the code above. for me 0 !== false and null !== undefined. If you do not need such strict check remove one "=" sign in "this[p] !== x[p]" inside the code.
Object.prototype.equals = function(x){
for (var p in this) {
if(typeof(this[p]) !== typeof(x[p])) return false;
if((this[p]===null) !== (x[p]===null)) return false;
switch (typeof(this[p])) {
case 'undefined':
if (typeof(x[p]) != 'undefined') return false;
break;
case 'object':
if(this[p]!==null && x[p]!==null && (this[p].constructor.toString() !== x[p].constructor.toString() || !this[p].equals(x[p]))) return false;
break;
case 'function':
if (p != 'equals' && this[p].toString() != x[p].toString()) return false;
break;
default:
if (this[p] !== x[p]) return false;
}
}
return true;
}
Then I have tested it with next objects:
var a = {a: 'text', b:[0,1]};
var b = {a: 'text', b:[0,1]};
var c = {a: 'text', b: 0};
var d = {a: 'text', b: false};
var e = {a: 'text', b:[1,0]};
var f = {a: 'text', b:[1,0], f: function(){ this.f = this.b; }};
var g = {a: 'text', b:[1,0], f: function(){ this.f = this.b; }};
var h = {a: 'text', b:[1,0], f: function(){ this.a = this.b; }};
var i = {
a: 'text',
c: {
b: [1, 0],
f: function(){
this.a = this.b;
}
}
};
var j = {
a: 'text',
c: {
b: [1, 0],
f: function(){
this.a = this.b;
}
}
};
var k = {a: 'text', b: null};
var l = {a: 'text', b: undefined};
a==b expected true; returned true
a==c expected false; returned false
c==d expected false; returned false
a==e expected false; returned false
f==g expected true; returned true
h==g expected false; returned false
i==j expected true; returned true
d==k expected false; returned false
k==l expected false; returned false
your string is NOT a valid json to start with.
a valid json will be,
{
"area": [
{
"area": "kothrud"
},
{
"area": "katraj"
}
]
}
if you do a json_decode
, it will yield,
stdClass Object
(
[area] => Array
(
[0] => stdClass Object
(
[area] => kothrud
)
[1] => stdClass Object
(
[area] => katraj
)
)
)
Update: to use
$string = '
{
"area": [
{
"area": "kothrud"
},
{
"area": "katraj"
}
]
}
';
$area = json_decode($string, true);
foreach($area['area'] as $i => $v)
{
echo $v['area'].'<br/>';
}
Output:
kothrud
katraj
Update #2:
for that true
:
When TRUE, returned objects will be converted into associative arrays. for more information, click here
In Windows Powershell you can use Start-Process command with option -Verb RunAs
to start and elevated process.
Here is my sudo function example:
function sudo {
Start-Process @args -verb runas
}
Ex: Open hosts file as Admin in notepad
sudo notepad C:\Windows\System32\drivers\etc\hosts
You can use JPGraph and Graphpite
If you are coming from Microsoft Excel, the following functions will be similar to LEFT()
, RIGHT()
, and MID()
functions.
# This counts from the left and then extract n characters
str_left <- function(string, n) {
substr(string, 1, n)
}
# This counts from the right and then extract n characters
str_right <- function(string, n) {
substr(string, nchar(string) - (n - 1), nchar(string))
}
# This extract characters from the middle
str_mid <- function(string, from = 2, to = 5){
substr(string, from, to)
}
Examples:
x <- "some text in a string"
str_left(x, 4)
[1] "some"
str_right(x, 6)
[1] "string"
str_mid(x, 6, 9)
[1] "text"
This is very confusing, and if you are using IDE like pycharm, it's little more confusing. What worked for me: 1. Make pycharm project settings (if you are running python from a VE or from python directory) 2. There is no wrong the way you defined. sometime it works with from folder1.file1 import class
if it does not work, use import folder1.file1 3. Your environment variable should be correctly mentioned in system or provide it in your command line argument.
More often, people use logical operators to shorten the statement syntax:
!defaults.slideshowWidth &&
(defaults.slideshowWidth = obj.find('img').width() + 'px');
But in your particular case the syntax can be even simpler:
defaults.slideshowWidth = defaults.slideshowWidth || obj.find('img').width() + 'px';
This code will return the defaults.slideshowWidth
value if the defaults.slideshowWidth
is evaluated to true and obj.find('img').width() + 'px'
value otherwise.
See Short-Circuit Evaluation of logical operators for details.
In my case the problem was that the logs folder did not exist resp. the error.log file in this folder.
You can use two way
1) if ( val == null )
2) if ( val === undefine )
You don't need to. Just slap it on there as many times as you want and as often as you want. MDN explains identical event listeners:
If multiple identical EventListeners are registered on the same EventTarget with the same parameters, the duplicate instances are discarded. They do not cause the EventListener to be called twice, and they do not need to be removed manually with the
removeEventListener
method.
How about
SELECT id, COUNT(IF status=42 THEN 1 ENDIF) AS cnt
FROM table
GROUP BY table
Shorter than CASE
:)
Works because COUNT()
doesn't count null values, and IF
/CASE
return null when condition is not met and there is no ELSE
.
I think it's better than using SUM()
.
The question is why does the limitation still exist. Surely modern Windows can increase the side of MAX_PATH
to allow longer paths. Why has the limitation not been removed?
Through API contract, Windows has guaranteed all applications that the standard file APIs will never return a path longer than 260
characters.
Consider the following correct code:
WIN32_FIND_DATA findData;
FindFirstFile("C:\Contoso\*", ref findData);
Windows guaranteed my program that it would populate my WIN32_FIND_DATA
structure:
WIN32_FIND_DATA {
DWORD dwFileAttributes;
FILETIME ftCreationTime;
FILETIME ftLastAccessTime;
FILETIME ftLastWriteTime;
//...
TCHAR cFileName[MAX_PATH];
//..
}
My application didn't declare the value of the constant MAX_PATH
, the Windows API did. My application used that defined value.
My structure is correctly defined, and only allocates 592
bytes total. That means that i am only able to receive a filename that is less than 260
characters. Windows promised me that if i wrote my application correctly, my application would continue to work in the future.
If Windows were to allow filenames longer than 260
characters then my existing application (which used the correct API correctly) would fail.
For anyone calling for Microsoft to change the MAX_PATH
constant, they first need to ensure that no existing application fails. For example, i still own and use a Windows application that was written to run on Windows 3.11. It still runs on 64-bit Windows 10. That is what backwards compatibility gets you.
Microsoft did create a way to use the full 32,768 path names; but they had to create a new API contract to do it. For one, you should use the Shell API to enumerate files (as not all files exist on a hard drive or network share).
But they also have to not break existing user applications. The vast majority of applications do not use the shell api for file work. Everyone just calls FindFirstFile
/FindNextFile
and calls it a day.
This is not mentioned in you post but I suspect you are initiating an SSL connection from the browser to Apache, where VirtualHosts are configured, and Apache does a revese proxy to your Tomcat.
There is a serious bug in (some versions ?) of IE that sends the 'wrong' host information in an SSL connection (see EDIT below) and confuses the Apache VirtualHosts. In short the server name presented is the one of the reverse DNS resolution of the IP, not the one in the URL.
The workaround is to have one IP address per SSL virtual hosts/server name. Is short, you must end up with something like
1 server name == 1 IP address == 1 certificate == 1 Apache Virtual Host
EDIT
Though the conclusion is correct, the identification of the problem is better described here http://en.wikipedia.org/wiki/Server_Name_Indication
In my case, I pushed several big (> 100Mb) files and then proceeded to remove them. But they were still in the history of my repo, so I had to remove them from it as well.
What did the trick was:
bfg -b 100M # To remove all blobs from history, whose size is superior to 100Mb
git reflog expire --expire=now --all
git gc --prune=now --aggressive
Then, you need to push force on your branch:
git push origin <your_branch_name> --force
Note: bfg is a tool that can be installed on Linux and macOS using brew:
brew install bfg
This code works well :
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="https://code.jquery.com/jquery-1.12.4.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<script>
$(document).ready(function(){
var options = {};
$("#c").hide();
$("#d").hide();
$("#a").click(function(){
$("#c").toggle( "slide", options, 500 );
$("#d").hide();
});
$("#b").click(function(){
$("#d").toggle( "slide", options, 500 );
$("#c").hide();
});
});
</script>
<style>
nav{
float:left;
max-width:300px;
width:300px;
margin-top:100px;
}
article{
margin-top:100px;
height:100px;
}
#c,#d{
padding:10px;
border:1px solid olive;
margin-left:100px;
margin-top:100px;
background-color:blue;
}
button{
border:2px solid blue;
background-color:white;
color:black;
padding:10px;
}
</style>
</head>
<body>
<header>
<center>hi</center>
</header>
<nav>
<button id="a">Register 1</button>
<br>
<br>
<br>
<br>
<button id="b">Register 2</button>
</nav>
<article id="c">
<form>
<label>User name:</label>
<input type="text" name="123" value="something"/>
<br>
<br>
<label>Password:</label>
<input type="text" name="456" value="something"/>
</form>
</article>
<article id="d">
<p>Hi</p>
</article>
</body>
</html>
Reference:W3schools.com and jqueryui.com
Note:This is a example code don't forget to add all the script tags in order to achieve proper functioning of the code.
A much simpler way nowadays is to use the jquery filter() as follows:
var options = $('select option');
var query = $('input').val();
options.filter(function() {
$(this).toggle($(this).val().toLowerCase().indexOf(query) > -1);
});
In my expression, count(enddate)
counts how many rows where the enddate
column is not null.
The count(*)
expression counts total rows.
By comparing, you can easily tell if any value in the enddate
column contains null
. If they are identical, then max(enddate)
is the result. Otherwise the case
will default to returning null
which is also the answer. This is a very popular way to do this exact check.
SELECT recordid,
MIN(startdate),
case when count(enddate) = count(*) then max(enddate) end
FROM tmp
GROUP BY recordid
Inline
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/css/bootstrap.min.css" >
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.11.0/umd/popper.min.js" integrity="sha384-b/U6ypiBEHpOf/4+1nzFpr53nxSS+GLCkfwBdFNTxtclqqenISfwAzpKaMNFNmj4" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/js/bootstrap.min.js" integrity="sha384-h0AbiXch4ZDo7tp9hKZ4TsHbi047NrKGLO3SEJAg45jXxnGIfYzk4Si90RDIqNm1" crossorigin="anonymous"></script>
<ul class="list-inline">
<li class="list-inline-item"><a class="social-icon text-xs-center" target="_blank" href="#">FB</a></li>
<li class="list-inline-item"><a class="social-icon text-xs-center" target="_blank" href="#">G+</a></li>
<li class="list-inline-item"><a class="social-icon text-xs-center" target="_blank" href="#">T</a></li>
</ul>
_x000D_
and learn more about https://getbootstrap.com/docs/4.0/content/typography/#inline
When you talked about "Hash Table will place a new entry into the 'next available' bucket if the new Key entry collides with another.", you are talking about the Open addressing strategy of Collision resolution of hash table.
There are several strategies for hash table to resolve collision.
First kind of big method require that the keys (or pointers to them) be stored in the table, together with the associated values, which further includes:
Another important method to handle collision is by Dynamic resizing, which further has several ways:
EDIT: the above are borrowed from wiki_hash_table, where you should go to have a look to get more info.
MYSQL has no explode()
like function built in. But you can easily add similar function to your DB and then use it from php queries. That function will look like:
CREATE FUNCTION SPLIT_STRING(str VARCHAR(255), delim VARCHAR(12), pos INT)
RETURNS VARCHAR(255)
RETURN REPLACE(SUBSTRING(SUBSTRING_INDEX(str, delim, pos),
CHAR_LENGTH(SUBSTRING_INDEX(str, delim, pos-1)) + 1),
delim, '');
Usage:
SELECT SPLIT_STRING('apple, pear, melon', ',', 1)
The example above will return apple
.
I think that it will be impossible to return array in MySQL so you must specify which occurrence to return explicitly in pos
. Let me know if you succeed using it.
You could take it out of the flow with position:absolute. But the helper_panel will oberlap with other stuff. (I added orders, to see the divs)
<div id="container" style="width: 960px; border:1px solid #f00;">
Text before<br>
<div id="help_panel" style="width: 100%; position:absolute; margin: 0 auto; border:1px solid #0f0;">
Content goes here.
</div>
This is behind the help_penal
</div>
The Like Box/ Page plugin is basically an iframe and ugly :D
So I created my own free plugin that I call Famax plugin to display FanPage feeds. It's similar to the like box but has a better UI and is more customizable.
Also because the Like box is shown in an iframe with a fixed width and height etc, its not really responsive.
Here is roughly a snippet that you want. Let me find out how to forward the arguments.
read -p "Are you sure you want to continue? <y/N> " prompt
if [[ $prompt == "y" || $prompt == "Y" || $prompt == "yes" || $prompt == "Yes" ]]
then
# http://stackoverflow.com/questions/1537673/how-do-i-forward-parameters-to-other-command-in-bash-script
else
exit 0
fi
Watch out for yes | command name here
:)
In my case none of the answers helped. Finally it turned out, that changing to a 64 bit version of PHP (M$ Windows) fixed the problem immediately. I did not change any settings - it just worked.
In Ruby IO module documentation, I suppose.
Mode | Meaning
-----+--------------------------------------------------------
"r" | Read-only, starts at beginning of file (default mode).
-----+--------------------------------------------------------
"r+" | Read-write, starts at beginning of file.
-----+--------------------------------------------------------
"w" | Write-only, truncates existing file
| to zero length or creates a new file for writing.
-----+--------------------------------------------------------
"w+" | Read-write, truncates existing file to zero length
| or creates a new file for reading and writing.
-----+--------------------------------------------------------
"a" | Write-only, starts at end of file if file exists,
| otherwise creates a new file for writing.
-----+--------------------------------------------------------
"a+" | Read-write, starts at end of file if file exists,
| otherwise creates a new file for reading and
| writing.
-----+--------------------------------------------------------
"b" | Binary file mode (may appear with
| any of the key letters listed above).
| Suppresses EOL <-> CRLF conversion on Windows. And
| sets external encoding to ASCII-8BIT unless explicitly
| specified.
-----+--------------------------------------------------------
"t" | Text file mode (may appear with
| any of the key letters listed above except "b").
Someone wrote...
I just set all files that end in ".sh" to open with Terminal. It works fine and you don't have to change the name of each shell script you want to run.
One of the benefits is you can use it in multiple views and have a consistent label text. It is also used by asp.net MVC scaffolding to generate the labels text and makes it easier to generate meaningful text
[Display(Name = "Wild and Crazy")]
public string WildAndCrazyProperty { get; set; }
"Wild and Crazy" shows up consistently wherever you use the property in your application.
Sometimes this is not flexible as you might want to change the text in some view. In that case, you will have to use custom markup like in your second example
In Java 8:
Arrays.sort(files, (a, b) -> Long.compare(a.lastModified(), b.lastModified()));
Following suit from the suggestions here, I added an extension method to return a list of the selected items using LINQ for any type that Inherits from System.Web.UI.WebControls.ListControl
.
Every ListControl
object has an Items
property of type ListItemCollection
. ListItemCollection
exposes a collection of ListItems
, each of which have a Selected
property.
public static IEnumerable<ListItem> GetSelectedItems(this ListControl checkBoxList)
{
return from ListItem li in checkBoxList.Items where li.Selected select li;
}
<Extension()> _
Public Function GetSelectedItems(ByVal checkBoxList As ListControl) As IEnumerable(Of ListItem)
Return From li As ListItem In checkBoxList.Items Where li.Selected
End Function
Then, just use like this in either language:
myCheckBoxList.GetSelectedItems()
Simple solution would be to remove padding from .panel-heading
and add to .panel-title a
.
.panel-heading {
padding: 0;
}
.panel-title a {
display: block;
padding: 10px 15px;
}
This solution is similar to the above one posted by calfzhou, slightly different.
A simple way of reading variables from a text file using the standard library:
# Get vars from conf file
var = {}
with open("myvars.conf") as conf:
for line in conf:
if ":" in line:
name, value = line.split(":")
var[name] = str(value).rstrip()
globals().update(var)
Just call moment as a function without any arguments:
moment()
For timezone information with moment, look at the moment-timezone
package: http://momentjs.com/timezone/
Now all clients allow to do it, but it's not pretty simple.
In any Telegram client:
Administrators
Application.Exit
is for Windows Forms applications - it informs all message pumps that they should terminate, waits for them to finish processing events and then terminates the application. Note that it doesn't necessarily force the application to exit.
Environment.Exit
is applicable for all Windows applications, however it is mainly intended for use in console applications. It immediately terminates the process with the given exit code.
In general you should use Application.Exit
in Windows Forms applications and Environment.Exit
in console applications, (although I prefer to let the Main
method / entry point run to completion rather than call Environment.Exit
in console applications).
For more detail see the MSDN documentation.
One problem is that you are using count
to refer both to the position in the word that you are checking, and the number of char
you have seen, and you are using char
to refer both to the input character you are checking, and the current character in the string. Use separate variables instead.
Also, move the return
statement outside the loop; otherwise you will always return after checking the first character.
Finally, you only need one loop to iterate over the string. Get rid of the outer while
loop and you will not need to track the position in the string.
Taking these suggestions, your code would look like this:
def count_letters(word, char):
count = 0
for c in word:
if char == c:
count += 1
return count
There is a way simpler way. You put the href in a paragraph just created for that href. For example:
HREF name
To override the default entrypoint, use entrypoint
option. To pass the arguments use command
.
Here is the example of replacing bash
with sh
in ubuntu
image:
version: '3'
services:
sh:
entrypoint: /bin/sh
command: -c "ps $$(echo $$$$)"
image: ubuntu
tty: true
bash:
entrypoint: /bin/bash
command: -c "ps $$(echo $$$$)"
image: ubuntu
tty: true
Here is the output:
$ docker-compose up
Starting test_sh_1 ... done
Starting 020211508a29_test_bash_1 ... done
Attaching to test_sh_1, 020211508a29_test_bash_1
sh_1 | PID TTY STAT TIME COMMAND
sh_1 | 1 pts/0 Ss+ 0:00 /bin/sh -c ps $(echo $$)
020211508a29_test_bash_1 | PID TTY STAT TIME COMMAND
020211508a29_test_bash_1 | 1 pts/0 Rs+ 0:00 ps 1
In your case, you presumably don't want to use grep, but add instead a negative clause to the find command, e.g.
find /home/baumerf/public_html/ -mmin -60 -not -name error_log
If you want to include wildcards in the name, you'll have to escape them, e.g. to exclude files with suffix .log:
find /home/baumerf/public_html/ -mmin -60 -not -name \*.log
The ng g component plainsight/some-name
makes a new directory when we use it.
The final output will be:
plainsight/some-name/some-name.component.ts
To avoid that, make use of the flat option ng g component plainsight/some-name --flat
and it will generate the files without making a new folder
plainsight/some-name.component.ts
Whenever you need a solution for "How to work with YAML/JSON/compatible data from a shell script" which works on just about every OS with Python (*nix, OSX, Windows), consider yamlpath, which provides several command-line tools for reading, writing, searching, and merging YAML, EYAML, JSON, and compatible files. Since just about every OS either comes with Python pre-installed or it is trivial to install, this makes yamlpath highly portable. Even more interesting: this project defines an intuitive path language with very powerful, command-line-friendly syntax that enables accessing one or more nodes.
To your specific question and after installing yamlpath using Python's native package manager or your OS's package manager (yamlpath is available via RPM to some OSes):
#!/bin/bash
# Read values directly from YAML (or EYAML, JSON, etc) for use in this shell script:
myShellVar=$(yaml-get --query=any.path.no[matter%how].complex source-file.yaml)
# Use the value any way you need:
echo "Retrieved ${myShellVar}"
# Perhaps change the value and write it back:
myShellVar="New Value"
yaml-set --change=/any/path/no[matter%how]/complex --value="$myShellVar" source-file.yaml
You didn't specify that the data was a simple Scalar value though, so let's up the ante. What if the result you want is an Array? Even more challenging, what if it's an Array-of-Hashes and you only want one property of each result? Suppose further that your data is actually spread out across multiple YAML files and you need all the results in a single query. That's a much more interesting question to demonstrate with. So, suppose you have these two YAML files:
File: data1.yaml
---
baubles:
- name: Doohickey
sku: 0-000-1
price: 4.75
weight: 2.7g
- name: Doodad
sku: 0-000-2
price: 10.5
weight: 5g
- name: Oddball
sku: 0-000-3
price: 25.99
weight: 25kg
File: data2.yaml
---
baubles:
- name: Fob
sku: 0-000-4
price: 0.99
weight: 18mg
- name: Doohickey
price: 10.5
- name: Oddball
sku: 0-000-3
description: This ball is odd
How would you report only the sku
of every item in inventory after applying the changes from data2.yaml to data1.yaml, all from a shell script? Try this:
#!/bin/bash
baubleSKUs=($(yaml-merge --aoh=deep data1.yaml data2.yaml | yaml-get --query=/baubles/sku -))
for sku in "${baubleSKUs[@]}"; do
echo "Found bauble SKU: ${sku}"
done
You get exactly what you need from only a few lines of code:
Found bauble SKU: 0-000-1
Found bauble SKU: 0-000-2
Found bauble SKU: 0-000-3
Found bauble SKU: 0-000-4
As you can see, yamlpath turns very complex problems into trivial solutions. Note that the entire query was handled as a stream; no YAML files were changed by the query and there were no temp files.
I realize this is "yet another tool to solve the same question" but after reading the other answers here, yamlpath appears more portable and robust than most alternatives. It also fully understands YAML/JSON/compatible files and it does not need to convert YAML to JSON to perform requested operations. As such, comments within the original YAML file are preserved whenever you need to change data in the source YAML file. Like some alternatives, yamlpath is also portable across OSes. More importantly, yamlpath defines a query language that is extremely powerful, enabling very specialized/filtered data queries. It can even operate against results from disparate parts of the file in a single query.
If you want to get or set many values in the data at once -- including complex data like hashes/arrays/maps/lists -- yamlpath can do that. Want a value but don't know precisely where it is in the document? yamlpath can find it and give you the exact path(s). Need to merge multiple data file together, including from STDIN? yamlpath does that, too. Further, yamlpath fully comprehends YAML anchors and their aliases, always giving or changing exactly the data you expect whether it is a concrete or referenced value.
Disclaimer: I wrote and maintain yamlpath, which is based on ruamel.yaml, which is in turn based on PyYAML. As such, yamlpath is fully standards-compliant.
background-image: url(/images/poster.png);
background-position: center;
background-position-y: 50px;
background-repeat: no-repeat;
'''
If the python version you installed is 3.6.1, you can print strings and a variable through
a single line of code.
For example the first string is "I have", the second string is "US
Dollars" and the variable, **card.price** is equal to 300, we can write
the code this way:
'''
print("I have", card.price, "US Dollars")
#The print() function outputs strings to the screen.
#The comma lets you concatenate and print strings and variables together in a single line of code.
There is a constructor for ArrayList
which is
ArrayList(Collection<? extends E> c)
Now, EnumSet
extends AbstractCollection
so you can just do
ArrayList<Something> all = new ArrayList<Something>(enumSet)
From what I see you just try to see if they are equal, if this is true
, just go with something like this:
boolean areEqual = Arrays.equals(arr1, arr2);
This is the standard way of doing it.
Please note that the arrays must be also sorted to be considered equal, from the JavaDoc:
Two arrays are considered equal if both arrays contain the same number of elements, and all corresponding pairs of elements in the two arrays are equal. In other words, two arrays are equal if they contain the same elements in the same order.
Sorry for missing that.
Why the value had to be given in yyyy-MM-dd?
According to the input type = date spec of HTML 5, the value has to be in the format yyyy-MM-dd
since it takes the format of a valid full-date
which is specified in RFC3339 as
full-date = date-fullyear "-" date-month "-" date-mday
There is nothing to do with Angularjs since the directive input doesn't support date
type.
How do I get Firefox to accept my formatted value in the date input?
FF doesn't support date
type of input for at least up to the version 24.0. You can get this info from here. So for right now, if you use input with type being date
in FF, the text box takes whatever value you pass in.
My suggestion is you can use Angular-ui's Timepicker and don't use the HTML5 support for the date input.
How about..
>>> line = r'path=c:\path'
>>> line.partition('path=')
('', 'path=', 'c:\\path')
This triplet is the head, separator, and tail.
See the MDN section on Promises. In particular, look at the return type of then().
To log in, the user-agent has to submit a request to the server and wait to receive a response. Since making your application totally stop execution during a request round-trip usually makes for a bad user experience, practically every JS function that logs you in (or performs any other form of server interaction) will use a Promise, or something very much like it, to deliver results asynchronously.
Now, also notice that return
statements are always evaluated in the context of the function they appear in. So when you wrote:
let AuthUser = data => {
return google
.login(data.username, data.password)
.then( token => {
return token;
});
};
the statement return token;
meant that the anonymous function being passed into then()
should return the token, not that the AuthUser
function should. What AuthUser
returns is the result of calling google.login(username, password).then(callback);
, which happens to be a Promise.
Ultimately your callback token => { return token; }
does nothing; instead, your input to then()
needs to be a function that actually handles the token in some way.
I use a version of a script based on Stephen Haberman's answer:
if [ -n "$1" ]; then
gitbin="git -C $1"
else
gitbin="git"
fi
# Fetches from all the remotes, although --all can be replaced with origin
$gitbin fetch --all
if [ $($gitbin rev-parse HEAD) != $($gitbin rev-parse @{u}) ]; then
$gitbin rebase @{u} --preserve-merges
fi
Assuming this script is called git-fetch-and-rebase
, it can be invoked with an optional argument directory name
of the local Git repository to perform operation on. If the script is called with no arguments, it assumes the current directory to be part of the Git repository.
Examples:
# Operates on /abc/def/my-git-repo-dir
git-fetch-and-rebase /abc/def/my-git-repo-dir
# Operates on the Git repository which the current working directory is part of
git-fetch-and-rebase
It is available here as well.
Swift 5.1 Custom Object/Type
// MARK: - NotificationName
// Extending notification name to avoid string errors.
extension Notification.Name {
static let yourNotificationName = Notification.Name("yourNotificationName")
}
// MARK: - CustomObject
class YourCustomObject {
// Any stuffs you would like to set in your custom object as always.
init() {}
}
// MARK: - Notification Sender Class
class NotificatioSenderClass {
// Just grab the content of this function and put it to your function responsible for triggering a notification.
func postNotification(){
// Note: - This is the important part pass your object instance as object parameter.
let yourObjectInstance = YourCustomObject()
NotificationCenter.default.post(name: .yourNotificationName, object: yourObjectInstance)
}
}
// MARK: -Notification Receiver class
class NotificationReceiverClass: UIViewController {
// MARK: - ViewController Lifecycle
override func viewDidLoad() {
super.viewDidLoad()
// Register your notification listener
NotificationCenter.default.addObserver(self, selector: #selector(didReceiveNotificationWithCustomObject), name: .yourNotificationName, object: nil)
}
// MARK: - Helpers
@objc private func didReceiveNotificationWithCustomObject(notification: Notification){
// Important: - Grab your custom object here by casting the notification object.
guard let yourPassedObject = notification.object as? YourCustomObject else {return}
// That's it now you can use your custom object
//
//
}
// MARK: - Deinit
deinit {
// Save your memory by releasing notification listener
NotificationCenter.default.removeObserver(self, name: .yourNotificationName, object: nil)
}
}
I had a similar question, so I worked up a complete runnable answer below. What I needed to do is pass a class (C) to an object (O) of an unrelated class and have that object (O) emit new objects of class (C) back to me when I asked for them.
The example below shows how this is done. There is a MagicGun class that you load with any subtype of the Projectile class (Pebble, Bullet or NuclearMissle). The interesting is you load it with subtypes of Projectile, but not actual objects of that type. The MagicGun creates the actual object when it's time to shoot.
You've annoyed the target!
You've holed the target!
You've obliterated the target!
click
click
import java.util.ArrayList;
import java.util.List;
public class PassAClass {
public static void main(String[] args) {
MagicGun gun = new MagicGun();
gun.loadWith(Pebble.class);
gun.loadWith(Bullet.class);
gun.loadWith(NuclearMissle.class);
//gun.loadWith(Object.class); // Won't compile -- Object is not a Projectile
for(int i=0; i<5; i++){
try {
String effect = gun.shoot().effectOnTarget();
System.out.printf("You've %s the target!\n", effect);
} catch (GunIsEmptyException e) {
System.err.printf("click\n");
}
}
}
}
class MagicGun {
/**
* projectiles holds a list of classes that extend Projectile. Because of erasure, it
* can't hold be a List<? extends Projectile> so we need the SuppressWarning. However
* the only way to add to it is the "loadWith" method which makes it typesafe.
*/
private @SuppressWarnings("rawtypes") List<Class> projectiles = new ArrayList<Class>();
/**
* Load the MagicGun with a new Projectile class.
* @param projectileClass The class of the Projectile to create when it's time to shoot.
*/
public void loadWith(Class<? extends Projectile> projectileClass){
projectiles.add(projectileClass);
}
/**
* Shoot the MagicGun with the next Projectile. Projectiles are shot First In First Out.
* @return A newly created Projectile object.
* @throws GunIsEmptyException
*/
public Projectile shoot() throws GunIsEmptyException{
if (projectiles.isEmpty())
throw new GunIsEmptyException();
Projectile projectile = null;
// We know it must be a Projectile, so the SuppressWarnings is OK
@SuppressWarnings("unchecked") Class<? extends Projectile> projectileClass = projectiles.get(0);
projectiles.remove(0);
try{
// http://www.java2s.com/Code/Java/Language-Basics/ObjectReflectioncreatenewinstance.htm
projectile = projectileClass.newInstance();
} catch (InstantiationException e) {
System.err.println(e);
} catch (IllegalAccessException e) {
System.err.println(e);
}
return projectile;
}
}
abstract class Projectile {
public abstract String effectOnTarget();
}
class Pebble extends Projectile {
@Override public String effectOnTarget() {
return "annoyed";
}
}
class Bullet extends Projectile {
@Override public String effectOnTarget() {
return "holed";
}
}
class NuclearMissle extends Projectile {
@Override public String effectOnTarget() {
return "obliterated";
}
}
class GunIsEmptyException extends Exception {
private static final long serialVersionUID = 4574971294051632635L;
}
Another reason could be because the filepath is empty where you are trying to write which is why it can't find it. just another reason why this error occurs.
For reading date cells this method has proven to be robust so far:
private LocalDate readCellAsDate(final Row row, final int pos) {
if (pos == -1) {
return null;
}
final Cell cell = row.getCell(pos - 1);
if (cell != null) {
cell.setCellType(CellType.NUMERIC);
} else {
return null;
}
if (DateUtil.isCellDateFormatted(cell)) {
try {
return cell.getDateCellValue().toInstant().atZone(ZoneId.systemDefault()).toLocalDate();
} catch (final NullPointerException e) {
logger.error(e.getMessage());
return null;
}
}
return null;
}
from __future__ import division
somelist = [1,12,2,53,23,6,17]
max_value = max(somelist)
min_value = min(somelist)
avg_value = 0 if len(somelist) == 0 else sum(somelist)/len(somelist)
If you want to manually find the minimum as a function:
somelist = [1,12,2,53,23,6,17]
def my_min_function(somelist):
min_value = None
for value in somelist:
if not min_value:
min_value = value
elif value < min_value:
min_value = value
return min_value
Python 3.4 introduced the statistics
package, which provides mean
and additional stats:
from statistics import mean, median
somelist = [1,12,2,53,23,6,17]
avg_value = mean(somelist)
median_value = median(somelist)
I needed to run this Zip function in Mac OSX
so I would always zip that annoying .DS_Store.
I adapted https://stackoverflow.com/users/2019515/user2019515 by including additionalIgnore files.
function zipIt($source, $destination, $include_dir = false, $additionalIgnoreFiles = array())
{
// Ignore "." and ".." folders by default
$defaultIgnoreFiles = array('.', '..');
// include more files to ignore
$ignoreFiles = array_merge($defaultIgnoreFiles, $additionalIgnoreFiles);
if (!extension_loaded('zip') || !file_exists($source)) {
return false;
}
if (file_exists($destination)) {
unlink ($destination);
}
$zip = new ZipArchive();
if (!$zip->open($destination, ZIPARCHIVE::CREATE)) {
return false;
}
$source = str_replace('\\', '/', realpath($source));
if (is_dir($source) === true)
{
$files = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($source), RecursiveIteratorIterator::SELF_FIRST);
if ($include_dir) {
$arr = explode("/",$source);
$maindir = $arr[count($arr)- 1];
$source = "";
for ($i=0; $i < count($arr) - 1; $i++) {
$source .= '/' . $arr[$i];
}
$source = substr($source, 1);
$zip->addEmptyDir($maindir);
}
foreach ($files as $file)
{
$file = str_replace('\\', '/', $file);
// purposely ignore files that are irrelevant
if( in_array(substr($file, strrpos($file, '/')+1), $ignoreFiles) )
continue;
$file = realpath($file);
if (is_dir($file) === true)
{
$zip->addEmptyDir(str_replace($source . '/', '', $file . '/'));
}
else if (is_file($file) === true)
{
$zip->addFromString(str_replace($source . '/', '', $file), file_get_contents($file));
}
}
}
else if (is_file($source) === true)
{
$zip->addFromString(basename($source), file_get_contents($source));
}
return $zip->close();
}
SO to ignore the .DS_Store from zip, you run
zipIt('/path/to/folder', '/path/to/compressed.zip', false, array('.DS_Store'));
I had to delete the bin and obj folders from each folder in order to resolve this.
I just found this extension called beautify in the Market Place and yes, it's another config\settings file. :)
Beautify javascript, JSON, CSS, Sass, and HTML in Visual Studio Code.
VS Code uses js-beautify internally, but it lacks the ability to modify the style you wish to use. This extension enables running js-beautify in VS Code, AND honouring any .jsbeautifyrc file in the open file's path tree to load your code styling. Run with F1 Beautify (to beautify a selection) or F1 Beautify file.
For help on the settings in the .jsbeautifyrc see Settings.md
Here is the GitHub repository: https://github.com/HookyQR/VSCodeBeautify
In SQL Server 2012, 2014:
USE mydb
GO
ALTER ROLE db_datareader ADD MEMBER MYUSER
GO
ALTER ROLE db_datawriter ADD MEMBER MYUSER
GO
In SQL Server 2008:
use mydb
go
exec sp_addrolemember db_datareader, MYUSER
go
exec sp_addrolemember db_datawriter, MYUSER
go
To also assign the ability to execute all Stored Procedures for a Database:
GRANT EXECUTE TO MYUSER;
To assign the ability to execute specific stored procedures:
GRANT EXECUTE ON dbo.sp_mystoredprocedure TO MYUSER;
Personally i prefer the format function, allows you to simply change the date part very easily.
declare @format varchar(100) = 'yyyy/MM/dd'
select
format(the_date,@format),
sum(myfield)
from mytable
group by format(the_date,@format)
order by format(the_date,@format) desc;
Yes, there is - python may not be in /usr/bin
, but for example in /usr/local/bin
(BSD).
When using virtualenv, it may even be something like ~/projects/env/bin/python
jQuery is not the same as an array. If you want to append something at the end of a jQuery object, use:
$('#fruit').append(veggies);
or to append it to the end of a form value like in your example:
$('#fruit').val($('#fruit').val()+veggies);
In your case, fruitvegbasket
is a string that contains the current value of #fruit
, not an array.
jQuery (jquery.com) allows for DOM manipulation, and the specific function you called val()
returns the value
attribute of an input
element as a string. You can't push something onto a string.
Same problem with Sourcetree On Mac
Solution: Delete the password in keychain access.
When you try to push again it will ask for your password.
Math.round((new Date().setHours(23) - new Date(new Date().getFullYear(), 0, 1, 0, 0, 0))/1000/86400);
further optimizes the answer.
Moreover, by changing setHours(23) or the last-but-two zero later on to another value may provide day-of-year related to another timezone. For example, to retrieve from Europe a resource located in America.
Use below command to change computer hostname remotely , Require system reboot after change..
psexec.exe -h -e \\\IPADDRESS -u USERNAME -p PASSWORD netdom renamecomputer CurrentComputerName /newname:NewComputerName /force
This is largely a duplicate of another question.
Here's the section of that answer that is relevant to this question:
Do I need to do my own synchronization if I use java.util.ConcurrentLinkedQueue?
Atomic operations on the concurrent collections are synchronized for you. In other words, each individual call to the queue is guaranteed thread-safe without any action on your part. What is not guaranteed thread-safe are any operations you perform on the collection that are non-atomic.
For example, this is threadsafe without any action on your part:
queue.add(obj);
or
queue.poll(obj);
However; non-atomic calls to the queue are not automatically thread-safe. For example, the following operations are not automatically threadsafe:
if(!queue.isEmpty()) {
queue.poll(obj);
}
That last one is not threadsafe, as it is very possible that between the time isEmpty is called and the time poll is called, other threads will have added or removed items from the queue. The threadsafe way to perform this is like this:
synchronized(queue) {
if(!queue.isEmpty()) {
queue.poll(obj);
}
}
Again...atomic calls to the queue are automatically thread-safe. Non-atomic calls are not.
In addition to all these answer, one simple approach could also be as follows:
process = subprocess.Popen(your_command, stdout=subprocess.PIPE)
while process.stdout.readable():
line = process.stdout.readline()
if not line:
break
print(line.strip())
Loop through the readable stream as long as it's readable and if it gets an empty result, stop.
The key here is that readline()
returns a line (with \n
at the end) as long as there's an output and empty if it's really at the end.
Hope this helps someone.
Actually, there is a better way to do it than split:
public string GetFirstFromSplit(string input, char delimiter)
{
var i = input.IndexOf(delimiter);
return i == -1 ? input : input.Substring(0, i);
}
And as extension methods:
public static string FirstFromSplit(this string source, char delimiter)
{
var i = source.IndexOf(delimiter);
return i == -1 ? source : source.Substring(0, i);
}
public static string FirstFromSplit(this string source, string delimiter)
{
var i = source.IndexOf(delimiter);
return i == -1 ? source : source.Substring(0, i);
}
Usage:
string result = "hi, hello, sup".FirstFromSplit(',');
Console.WriteLine(result); // "hi"
Here, Erik explains every way pass an array by reference: https://stackoverflow.com/a/5724184/5090928.
Similarly, you can create an array reference variable like so:
int arr1[] = {1, 2, 3, 4, 5};
int(&arr2)[5] = arr1;
I find std::getline()
is often the simplest. The optional delimiter parameter means it's not just for reading "lines":
#include <sstream>
#include <iostream>
#include <vector>
using namespace std;
int main() {
vector<string> strings;
istringstream f("denmark;sweden;india;us");
string s;
while (getline(f, s, ';')) {
cout << s << endl;
strings.push_back(s);
}
}
Accessing a name and assigning a name are different. In your case, you are just accessing a name.
If you assign to a variable within a function, that variable is assumed to be local unless you declare it global. In the absence of that, it is assumed to be global.
>>> x = 1 # global
>>> def foo():
print x # accessing it, it is global
>>> foo()
1
>>> def foo():
x = 2 # local x
print x
>>> x # global x
1
>>> foo() # prints local x
2
Are you going to want to do a setInterval()
?
setInterval(function(){get_fb();}, 10000);
Or:
setInterval(get_fb, 10000);
Or, if you want it to run only after successfully completing the call, you can set it up in your .ajax().success()
callback:
function get_fb(){
var feedback = $.ajax({
type: "POST",
url: "feedback.php",
async: false
}).success(function(){
setTimeout(function(){get_fb();}, 10000);
}).responseText;
$('div.feedback-box').html(feedback);
}
Or use .ajax().complete()
if you want it to run regardless of result:
function get_fb(){
var feedback = $.ajax({
type: "POST",
url: "feedback.php",
async: false
}).complete(function(){
setTimeout(function(){get_fb();}, 10000);
}).responseText;
$('div.feedback-box').html(feedback);
}
Here is a demonstration of the two. Note, the success works only once because jsfiddle is returning a 404 error on the ajax call.
I resolved this problem by navigating to C:\Python27\Scripts folder and then run file.py file instead of C:\Python27 folder
One aspect of Turing completeness is the halting problem.
This means that, if CSS is Turing complete, then there's no general algorithm for determining whether a CSS program will finish running or loop forever.
But we can derive such an algorithm for CSS! Here it is:
If the stylesheet doesn't declare any animations, then it will halt.
If it does have animations, then:
If any animation-iteration-count
is infinite
, and the containing selector is matched in the HTML, then it will not halt.
Otherwise, it will halt.
That's it. Since we just solved the halting problem for CSS, it follows that CSS is not Turing complete.
(Other people have mentioned IE 6, which allows for embedding arbitrary JavaScript expressions in CSS; that will obviously add Turing completeness. But that feature is non-standard, and nobody in their right mind uses it anyway.)
Daniel Wagner brought up a point that I missed in the original answer. He notes that while I've covered animations, other parts of the style engine such as selector matching or layout can lead to Turing completeness as well. While it's difficult to make a formal argument about these, I'll try to outline why Turing completeness is still unlikely to happen.
First: Turing complete languages have some way of feeding data back into itself, whether it be through recursion or looping. But the design of the CSS language is hostile to this feedback:
@media
queries can only check properties of the browser itself, such as viewport size or pixel resolution. These properties can change via user interaction or JavaScript code (e.g. resizing the browser window), but not through CSS alone.
::before
and ::after
pseudo-elements are not considered part of the DOM, and cannot be matched in any other way.
Selector combinators can only inspect elements above and before the current element, so they cannot be used to create dependency cycles.
It's possible to shift an element away when you hover over it, but the position only updates when you move the mouse.
That should be enough to convince you that selector matching, on its own, cannot be Turing complete. But what about layout?
The modern CSS layout algorithm is very complex, with features such as Flexbox and Grid muddying the waters. But even if it were possible to trigger an infinite loop with layout, it would be hard to leverage this to perform useful computation. That's because CSS selectors inspect only the internal structure of the DOM, not how these elements are laid out on the screen. So any Turing completeness proof using the layout system must depend on layout alone.
Finally – and this is perhaps the most important reason – browser vendors have an interest in keeping CSS not Turing complete. By restricting the language, vendors allow for clever optimizations that make the web faster for everyone. Moreover, Google dedicates a whole server farm to searching for bugs in Chrome. If there were a way to write an infinite loop using CSS, then they probably would have found it already
If you are willing to use SourceTree (which I strongly recommend), you can right click your branch and chose 'Rename'.
You can do this with dynamic objects:
var dynamicKeyValueArray = new[] { new {Key = "K1", Value = 10}, new {Key = "K2", Value = 5} };
foreach(var keyvalue in dynamicKeyValueArray)
{
Console.Log(keyvalue.Key);
Console.Log(keyvalue.Value);
}
Alternatively if you enable developer mode and (ADB) is still needed you can use connect to the device.
To enable developer Mode you go to Phone Settings > About Phone > tap buildnumber 7 times
once you have it enabled and have the device connected you can start seeing the device in VSCode
Node.js was created explicitly as an experiment in async processing. The theory was that doing async processing on a single thread could provide more performance and scalability under typical web loads than the typical thread-based implementation.
And you know what? In my opinion that theory's been borne out. A node.js app that isn't doing CPU intensive stuff can run thousands more concurrent connections than Apache or IIS or other thread-based servers.
The single threaded, async nature does make things complicated. But do you honestly think it's more complicated than threading? One race condition can ruin your entire month! Or empty out your thread pool due to some setting somewhere and watch your response time slow to a crawl! Not to mention deadlocks, priority inversions, and all the other gyrations that go with multithreading.
In the end, I don't think it's universally better or worse; it's different, and sometimes it's better and sometimes it's not. Use the right tool for the job.
Make sure you choose to build a variant as 'Release' on Android Studio.
One thing you can do is this:
$(this)[0].value = "Something";
This allows jQuery to return the javascript object for that element, and you can bypass jQuery Functions.
You can also use the struct module to do this:
>>> struct.unpack("<L", "y\xcc\xa6\xbb")[0]
3148270713L
Sorry, you can't view or download this file at this time is an error message that you may get when you try to download files on Google Drive.
Bandwidth limits
Limit Per hour Per day
Download via web client 750 MB 1250 MB
Upload via web client 300 MB 500 MB
The explanation for the error message is simple: while users are free to share files publicly, or with a large number of users, quotas are in effect that limit availability.
If too many users view or download a file, it may be locked for a 24 hour period before the quota is reset. The period that a file is locked may be shorter according to Google.
If a file is particularly popular, it may take days or even longer before you manage to download it to your computer or place it on your Drive storage.
It could be a solution:
Locate the "uc" part of the address, and replace it with "open", so that the beginning of the URL reads * https:// drive.google.com/open?*
Load the address again once you have replaced uc with open in the address.
This loads a new screen with controls at the top.
Click on the "add to my drive" icon at the top right.
Click on "add to my drive" again to open your Google Drive storage in a new tab in the browser.
You should see the locked file on your drive now.
Select it with a right-click, and then the "make a copy" option from the menu.
8.Select the copy of the file with a right-click, and there download to download the file to your local system.
Basically, what this does is create a copy of the file on your own Drive account. Since you are the owner of the copied file, you may download it to your local system this way.
Please note that this works only if you are signed in to a Google Account. Also note that you are the owner of the copied file and will be held responsible for policy violations or other issues linked to the file.
Another option is: Any public folder in Drive can host files and provide direct links to the files.
How to create the hosting URL: https:// googledrive.com/host/FolderID (your id file)
This will provide a folder that will give direct links to files inside the folder. Note: hosting view will not display files created in Google Docs.
My solution:
I had the same problem, so I made a JSON file in Google Drive but the URL file (.mp3) is in Dropbox. It is working fantastic even though I have 40,000 active user. I used this solution because I did not have time to search too much! I wrote you the Dropbox Limits anyway but I did not get problems with it
Traffic limits DROPBOX
Links and file requests are automatically banned if they generate unusually large amounts of traffic.
Dropbox Basic (free) accounts:
20 GB per day: The total amount of traffic that all of your links and file requests combined can generate without getting banned 100,000 downloads per day: The total number of downloads that all of your links combined can generate
Dropbox Plus and Business accounts: About 200 GB per day: The total amount of traffic that all of your links and file requests combined can generate without getting banned There's no daily limit to the number of downloads that your links can generate If your account hits our limit, we'll send a message to the email address registered to your account. Your links will be temporarily disabled, and anyone who tries to access them will see an error page instead of your files.
P.S. If you need more information about my files and how did it and How to make the URL File from Dropbox, I hope help to the people is reading this! (I posted it before but Someone deleted my last post)!
Perhaps a combination of these plugins may come in handy:
You can use a table and apply a width
attribute to the first <td>
.
Code:
<table>
<tr>
<td width="100">Content1</td>
<td>Content2</td>
</tr>
<tr>
<td>Content3</td>
<td>Content4</td>
</tr>
</table>
Result
Content1 Content2
Content3 Content4
The syntax is wrong, it should instead be
svn merge <what(the range)> <from(your dev branch)> <to(trunk/trunk local copy)>
This is built into core: See Settings ? Tab Type
and choose auto
:
When set to "auto", the editor auto-detects the tab type based on the contents of the buffer (it uses the first leading whitespace on a non-comment line), or uses the value of the Soft Tabs config setting if auto-detection fails.
You may also want to take a look at the Auto Detect Indentation package. From the docs:
Automatically detect indentation of opened files. It looks at each opened file and sets file specific tab settings (hard/soft tabs, tab length) based on the content of the file instead of always using the editor defaults.
You might have atom configured to use 4 spaces for tabs but open a rails project which defaults to 2 spaces. Without this package, you would have to change your tabstop settings globally or risk having inconsistent lead spacing in your files.
IOError: [Errno 13] Permission denied: 'juliodantas2015.json'
tells you everything you need to know: though you successfully made your python program executable with your chmod
, python can't open that juliodantas2015.json'
file for writing. You probably don't have the rights to create new files in the folder you're currently in.
Simple solution:
/\s{2,}/
This matches all occurrences of one or more whitespace characters. If you need to match the entire line, but only if it contains two or more consecutive whitespace characters:
/^.*\s{2,}.*$/
If the whitespaces don't need to be consecutive:
/^(.*\s.*){2,}$/
In my case, it's happening in my shared module and I had to add the following into @NgModule:
...
imports: [
CommonModule,
FormsModule,
ReactiveFormsModule,
IonicModule
],
...
I ended up with the following:
set input=AAA BBB CCC DDD EEE FFF
set nth=4
for /F "tokens=%nth% delims= " %%a in ("%input%") do set nthstring=%%a
echo %nthstring%
With this you can parameterize the input and index. Make sure to put this code in a bat file.
The receiver must set port of receiver to match port set in sender DatagramPacket. For debugging try listening on port > 1024 (e.g. 8000 or 9000). Ports < 1024 are typically used by system services and need admin access to bind on such a port.
If the receiver sends packet to the hard-coded port it's listening to (e.g. port 57) and the sender is on the same machine then you would create a loopback to the receiver itself. Always use the port specified from the packet and in case of production software would need a check in any case to prevent such a case.
Another reason a packet won't get to destination is the wrong IP address specified in the sender. UDP unlike TCP will attempt to send out a packet even if the address is unreachable and the sender will not receive an error indication. You can check this by printing the address in the receiver as a precaution for debugging.
In the sender you set:
byte [] IP= { (byte)192, (byte)168, 1, 106 };
InetAddress address = InetAddress.getByAddress(IP);
but might be simpler to use the address in string form:
InetAddress address = InetAddress.getByName("192.168.1.106");
In other words, you set target as 192.168.1.106. If this is not the receiver then you won't get the packet.
Here's a simple UDP Receiver that works :
import java.io.IOException;
import java.net.*;
public class Receiver {
public static void main(String[] args) {
int port = args.length == 0 ? 57 : Integer.parseInt(args[0]);
new Receiver().run(port);
}
public void run(int port) {
try {
DatagramSocket serverSocket = new DatagramSocket(port);
byte[] receiveData = new byte[8];
String sendString = "polo";
byte[] sendData = sendString.getBytes("UTF-8");
System.out.printf("Listening on udp:%s:%d%n",
InetAddress.getLocalHost().getHostAddress(), port);
DatagramPacket receivePacket = new DatagramPacket(receiveData,
receiveData.length);
while(true)
{
serverSocket.receive(receivePacket);
String sentence = new String( receivePacket.getData(), 0,
receivePacket.getLength() );
System.out.println("RECEIVED: " + sentence);
// now send acknowledgement packet back to sender
DatagramPacket sendPacket = new DatagramPacket(sendData, sendData.length,
receivePacket.getAddress(), receivePacket.getPort());
serverSocket.send(sendPacket);
}
} catch (IOException e) {
System.out.println(e);
}
// should close serverSocket in finally block
}
}
you can use this for rounding to a precison..
//to_f is for float
salary= 2921.9121
puts salary.to_f.round(2) // to 2 decimal place
puts salary.to_f.round() // to 3 decimal place
Got this solved using Webpack 2 :
resolve: {
extensions: ['', '.js'],
modules: [__dirname , 'node_modules']
}
I had the same problem. I called a method inside viewDidLoad
inside my first UIViewController
- (void)viewDidLoad{
[super viewDidLoad];
[self performSelector:@selector(loadingView)
withObject:nil afterDelay:0.5];
}
- (void)loadingView{
[self performSegueWithIdentifier:@"loadedData" sender:self];
}
Inside the second UIViewController
I did the same also with 0.5 seconds delay. After changing the delay to a higher value, it worked fine. It's like the segue can't be performed too fast after another segue.
There is no default color. It means that every device can have own.
Just for the record, using H2 as testing database, and MySQL at runtime, this approach works (example is newest object in group):
@Query(value = "SELECT t.* FROM t LEFT JOIN t AS t_newer " +
"ON t.object_id = t_newer.object_id AND t.id < t_newer.id AND o_newer.user_id IN (:user_ids) " +
"WHERE t_newer.id IS NULL AND t.user_id IN (:user_ids) " +
"ORDER BY t.id DESC \n-- #pageable\n",
countQuery = "SELECT COUNT(1) FROM t WHERE t.user_id IN (:user_ids) GROUP BY t.object_id, t.user_id",
nativeQuery = true)
Page<T> findByUserIdInGroupByObjectId(@Param("user_ids") Set<Integer> userIds, Pageable pageable);
Spring Data JPA 1.10.5, H2 1.4.194, MySQL Community Server 5.7.11-log (innodb_version 5.7.11).
If you're looking for a way to show the hidden items in you array, you got to pass maxArrayLength: Infinity
console.log(util.inspect(value, { maxArrayLength: Infinity }));
<div id="test">
<span>1</span>
<span>2</span>
<span>3</span>
<span>4</span>
</div>
<div id="test2"></div>
<script type="text/javascript">
var getDiv = document.getElementById('test');
var getSpan = getDiv.getElementsByTagName('span');???
var divDump = document.getElementById('test2');
for (var i=0; i<getSpan.length; i++) {
divDump.innerHTML = divDump.innerHTML + ' ' + getSpan[i].innerHTML;
}
</script>
?
i think it should be
select convert(varchar(10),StandardCost) +'S' from DimProduct where ProductKey = 212
or
select cast(StandardCost as varchar(10)) + 'S' from DimProduct where ProductKey = 212
private DateTime ConvertToDateTime(string strDateTime)
{
DateTime dtFinaldate; string sDateTime;
try { dtFinaldate = Convert.ToDateTime(strDateTime); }
catch (Exception e)
{
string[] sDate = strDateTime.Split('/');
sDateTime = sDate[1] + '/' + sDate[0] + '/' + sDate[2];
dtFinaldate = Convert.ToDateTime(sDateTime);
}
return dtFinaldate;
}
I found at least three ways of doing this:
public getters
on your entity that you try to serialize;public getters
. This will change the default for Jackson from Visbility=DEFAULT
to @JsonAutoDetect(fieldVisibility = JsonAutoDetect.Visibility.ANY)
where any access modifiers are accepted;ObjectMapper
globally by setting objectMapperInstance.setVisibility(JsonMethod.FIELD, Visibility.ANY);
. This should be avoided if you don't need this functionality globally.Choose based on your needs.
escapeRegExp = function(str) {
if (str == null) return '';
return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};
df <- data.frame(x=rnorm(10), y=rnorm(10))
rownames(df) <- letters[1:10]
df[c('a','b'),]
For overloading you'd need a subclass:
class ChildTestclass extends Testclass {
public $testvar = "newVal";
}
$obj = new ChildTestclass();
$obj->dosomething();
This code would echo newVal
.
Try this:
#foo
{
position: absolute;
top: 100%;
right: 0%;
}
This kind of code perhaps should work for You
SELECT
*,
CASE
WHEN (pvc IS NULL OR pvc = '') AND (datepose < 1980) THEN '01'
WHEN (pvc IS NULL OR pvc = '') AND (datepose >= 1980) THEN '02'
WHEN (pvc IS NULL OR pvc = '') AND (datepose IS NULL OR datepose = 0) THEN '03'
ELSE '00'
END AS modifiedpvc
FROM my_table;
gid | datepose | pvc | modifiedpvc
-----+----------+-----+-------------
1 | 1961 | 01 | 00
2 | 1949 | | 01
3 | 1990 | 02 | 00
1 | 1981 | | 02
1 | | 03 | 00
1 | | | 03
(6 rows)
Use -
new Select(driver.findElement(By.id("gender"))).selectByVisibleText("Germany");
Of course, you need to import org.openqa.selenium.support.ui.Select;
No. The first returns a DOM element, or null, whereas the second always returns a jQuery object. The jQuery object will be empty if no element with the id of contents
was matched.
The DOM element returned by document.getElementById('contents')
allows you to do things such as change the .innerHTML
(or .value
) etc, however you'll need to use jQuery methods on the jQuery Object.
var contents = $('#contents').get(0);
Is more equivilent, however if no element with the id of contents
is matched, document.getElementById('contents')
will return null, but $('#contents').get(0)
will return undefined.
One benefit on using the jQuery object is that you won't get any errors if no elements were returned, as an object is always returned. However you will get errors if you try to perform operations on the null
returned by document.getElementById
This is the proper way to access data in laravel :
@foreach($data-> ac as $link)
{{$link->url}}
@endforeach
You need module.exports:
Exports
An object which is shared between all instances of the current module and made accessible through require(). exports is the same as the module.exports object. See src/node.js for more information. exports isn't actually a global but rather local to each module.
For example, if you would like to expose variableName
with value "variableValue"
on sourceFile.js
then you can either set the entire exports as such:
module.exports = { variableName: "variableValue" };
Or you can set the individual value with:
module.exports.variableName = "variableValue";
To consume that value in another file, you need to require(...)
it first (with relative pathing):
const sourceFile = require('./sourceFile');
console.log(sourceFile.variableName);
Alternatively, you can deconstruct it.
const { variableName } = require('./sourceFile');
// current directory --^
// ../ would be one directory down
// ../../ is two directories down
If all you want out of the file is variableName
then
const variableName = 'variableValue'
module.exports = variableName
const variableName = require('./sourceFile')
Since Node.js version 8.9.0, you can also use ECMAScript Modules with varying levels of support. The documentation.
--experimental-modules
Node.js will treat the following as ES modules when passed to node as the initial input, or when referenced by import statements within ES module code:
- Files ending in
.mjs
.
.js
when the nearest parent package.json
file contains a top-level field "type"
with a value of "module"
.--eval
or --print
, or piped to node via STDIN, with the flag --input-type=module
.Once you have it setup, you can use import
and export
.
Using the example above, there are two approaches you can take
// This is a named export of variableName
export const variableName = 'variableValue'
// Alternatively, you could have exported it as a default.
// For sake of explanation, I'm wrapping the variable in an object
// but it is not necessary.
// You can actually omit declaring what variableName is here.
// { variableName } is equivalent to { variableName: variableName } in this case.
export default { variableName: variableName }
// There are three ways of importing.
// If you need access to a non-default export, then
// you use { nameOfExportedVariable }
import { variableName } from './sourceFile'
console.log(variableName) // 'variableValue'
// Otherwise, you simply provide a local variable name
// for what was exported as default.
import sourceFile from './sourceFile'
console.log(sourceFile.variableName) // 'variableValue'
// The third way of importing is for situations where there
// isn't a default export but you want to warehouse everything
// under a single variable. Say you have:
export const a = 'A'
export const b = 'B'
// Then you can import all exports under a single variable
// with the usage of * as:
import * as sourceFileWithoutDefault from './sourceFileWithoutDefault'
console.log(sourceFileWithoutDefault.a) // 'A'
console.log(sourceFileWithoutDefault.b) // 'B'
// You can use this approach even if there is a default export:
import * as sourceFile from './sourceFile'
// Default exports are under the variable default:
console.log(sourceFile.default) // { variableName: 'variableValue' }
// As well as named exports:
console.log(sourceFile.variableName) // 'variableValue
You can install "Extended Read Permission" plug-in. Then in either "Global Settings" or in individual job configuration, you can give the user "Extended Read" permission.
You can revert all your files under your working directory and index by typing following this command
git reset --hard <SHAsum of your commit>
You can also type
git reset --hard HEAD #your current head point
or
git reset --hard HEAD^ #your previous head point
Hope it helps
If you have access to our webroot, create a file asdf.php with
<?php phpinfo(); ?>
in it and point your webbrowser to it. You should see all info in the first section.
This works for any php application and is therefore the universal way to find our php.ini
It is also possible to use Spring Data JDBC repository, which is a community project built on top of Spring Data Commons to access to databases with raw SQL, without using JPA.
It is less powerful than Spring Data JPA, but if you want lightweight solution for simple projects without using a an ORM like Hibernate, that a solution worth to try.
It is also possible to round negative integers
// performing d = c * 3/4 where d can be pos or neg
d = ((c * a) + ((c>0? (b>>1):-(b>>1)))) / b;
// explanation:
// 1.) multiply: c * a
// 2.) if c is negative: (c>0? subtract half of the dividend
// (b>>1) is bit shift right = (b/2)
// if c is positive: else add half of the dividend
// 3.) do the division
// on a C51/52 (8bit embedded) or similar like ATmega the below code may execute in approx 12cpu cycles (not tested)
Extended from a tip somewhere else in here. Sorry, missed from where.
/* Example test: integer rounding example including negative*/
#include <stdio.h>
#include <string.h>
int main () {
//rounding negative int
// doing something like d = c * 3/4
int a=3;
int b=4;
int c=-5;
int d;
int s=c;
int e=c+10;
for(int f=s; f<=e; f++) {
printf("%d\t",f);
double cd=f, ad=a, bd=b , dd;
// d = c * 3/4 with double
dd = cd * ad / bd;
printf("%.2f\t",dd);
printf("%.1f\t",dd);
printf("%.0f\t",dd);
// try again with typecast have used that a lot in Borland C++ 35 years ago....... maybe evolution has overtaken it ;) ***
// doing div before mul on purpose
dd =(double)c * ((double)a / (double)b);
printf("%.2f\t",dd);
c=f;
// d = c * 3/4 with integer rounding
d = ((c * a) + ((c>0? (b>>1):-(b>>1)))) / b;
printf("%d\t",d);
puts("");
}
return 0;
}
/* test output
in 2f 1f 0f cast int
-5 -3.75 -3.8 -4 -3.75 -4
-4 -3.00 -3.0 -3 -3.75 -3
-3 -2.25 -2.2 -2 -3.00 -2
-2 -1.50 -1.5 -2 -2.25 -2
-1 -0.75 -0.8 -1 -1.50 -1
0 0.00 0.0 0 -0.75 0
1 0.75 0.8 1 0.00 1
2 1.50 1.5 2 0.75 2
3 2.25 2.2 2 1.50 2
4 3.00 3.0 3 2.25 3
5 3.75 3.8 4 3.00
// by the way evolution:
// Is there any decent small integer library out there for that by now?
Here's a method that I haven't seen used before:
/.*hede(*COMMIT)^|/
First, it tries to find "hede" somewhere in the line. If successful, at this point, (*COMMIT)
tells the engine to, not only not backtrack in the event of a failure, but also not to attempt any further matching in that case. Then, we try to match something that cannot possibly match (in this case, ^
).
If a line does not contain "hede" then the second alternative, an empty subpattern, successfully matches the subject string.
This method is no more efficient than a negative lookahead, but I figured I'd just throw it on here in case someone finds it nifty and finds a use for it for other, more interesting applications.
Google Goggles is the perfect application for doing both OCR and translation.
And the good news is that Google Goggles to Become App Platform.
Until then, you can use IQ Engines.
Looking at the "effective POM" will probably help too. For instance, if you wanted to know what the path is for ${project.build.sourceDirectory}
you would find the related XML in the effective POM, such as:
<project>
<build>
<sourceDirectory>/my/path</sourceDirectory>
Also helpful - you can do a real time evaluation of properties via the command line execution of mvn help:evaluate
while in the same dir as the POM.
I've an object (basically a VO) in Java and I don't know its type. I need to get values which are not null in that object.
Maybe you don't necessary need reflection for that -- here is a plain OO design that might solve your problem:
Validation
which expose a method validate
which checks the fields and return whatever is appropriate. Validation
and check that easily.I guess that you need the field that are null to display an error message in a generic way, so that should be enough. Let me know if this doesn't work for you for some reason.
There are only two ways:
If the memory pointer to by your char *
represents a C string (that is, it contains characters that have a 0-byte to mark its end), you can use strlen(a)
.
Otherwise, you need to store the length somewhere. Actually, the pointer only points to one char
. But we can treat it as if it points to the first element of an array. Since the "length" of that array isn't known you need to store that information somewhere.
As per macOS 10.14.5, below are the details:
Go to
system preferences > sharing > remote login.
Another solution:
body {
overflow-y: scroll;
width: 100%;
margin: 0 auto;
}
This way you always have a vertical scrollbar, but as most of my content is longer than the viewport, this is ok for me. Content is centered with a separate div, but without setting margin again in body my content would stay at the left.
These are the two function I use to show my popup/modal:
var popup_bodyTop = 0;
var popup_bodyLeft = 0;
function popupShow(id)
{
$('#'+ id).effect('fade');
$('#popup-overlay').effect('fade');
// remember current scroll-position
// because when setting/unsetting position: fixed to body
// the body would scroll to 0,0
popup_bodyLeft = $(document).scrollLeft();
popup_bodyTop = $(document).scrollTop();
// invert position
var x = - popup_bodyLeft;
var y = - popup_bodyTop;
$('body').css('position', 'fixed');
$('body').css('top', y.toString() +'px');
$('body').css('left', x.toString() +'px');
}
function popupHide(id)
{
$('#'+ id).effect('fade');
$('#popup-overlay').effect('fade');
$('body').css('position', '');
$('html, body').scrollTop(popup_bodyTop);
$('html, body').scrollLeft(popup_bodyLeft);
}
Result: non scrollable background and no re-positioning of the content because of the left scrollbar. Tested with current FF, Chrome and IE 10.
Dooted line after element :
http://jsfiddle.net/korigan/ubtkc17e/
<h2 class="dotted-line">Lorem ipsum</h2>
.dotted-line {
white-space: nowrap;
position: relative;
overflow: hidden;
}
.dotted-line:after {
content: "..........................................................................................................";
letter-spacing: 6px;
font-size: 30px;
color: #9cbfdb;
display: inline-block;
vertical-align: 3px;
padding-left: 10px;
}
players
is a list which needs to be indexed by integers. You seem to be using it like a dictionary. Maybe you could use unpacking -- Something like:
name, score = player
(if the player
list is always a constant length).
There's not much more advice we can give you without knowing what query
is and how it works.
It's worth pointing out that the entire code you posted doesn't make a whole lot of sense. There's an IndentationError
on the second line. Also, your function is looping over some iterable, but unconditionally returning during the first iteration which isn't usually what you actually want to do.
Use the keyword size
instead of fontsize
.
Do not even try to use flex; stay with css grid!! :)
https://jsfiddle.net/ctt3bqr0/
place-self: center;
is doing the centering work here.
If you want to center something that is inside div
that is inside grid cell you need to define nested grid in order to make it work. (Please look at the fiddle both examples shown there.)
https://css-tricks.com/snippets/css/complete-guide-grid/
Cheers!
Basically it is a chrome plug in. After installing the extention, you also need to make sure the extention is enabled from chrome side.
Not sure if you are coding these programs, but this is a simple example of how you'd do it.
program1.c
#include <stdio.h>
int main (int argc, char * argv[] ) {
printf("%s", argv[1]);
return 0;
}
rgx.cpp
#include <cstdio>
#include <regex>
#include <iostream>
using namespace std;
int main (int argc, char * argv[] ) {
char input[200];
fgets(input,200,stdin);
string s(input)
smatch m;
string reg_exp(argv[1]);
regex e(reg_exp);
while (regex_search (s,m,e)) {
for (auto x:m) cout << x << " ";
cout << endl;
s = m.suffix().str();
}
return 0;
}
Compile both then run program1.exe "this subject has a submarine as a subsequence" | rgx.exe "\b(sub)([^ ]*)"
The |
operator simply redirects the output of program1's printf
operation from the stdout
stream to the stdin
stream whereby it's sitting there waiting for rgx.exe to pick up.
As noted in the accepted answer - you can use the special { props.children } property. However - you can just pass a component as a prop as the title requests. I think this is cleaner sometimes as you might want to pass several components and have them render in different places. Here's the react docs with an example of how to do it:
https://reactjs.org/docs/composition-vs-inheritance.html
Make sure you are actually passing a component and not an object (this tripped me up initially).
The code is simply this:
const Parent = () => {
return (
<Child componentToPassDown={<SomeComp />} />
)
}
const Child = ({ componentToPassDown }) => {
return (
<>
{componentToPassDown}
</>
)
}
If you are after performance and don't want to go through all the if
clauses each time if there are many or the need to hash the values, you could send some extra information to the function with the help of enum
or just add an enum
type to your structure.
My example (from real project)
folder — File.
zipFile, filesString — String;
final String command = "/bin/tar -xvf " + zipFile + " " + filesString;
logger.info("Start unzipping: {} into the folder {}", command, folder.getPath());
final Runtime r = Runtime.getRuntime();
final Process p = r.exec(command, null, folder);
final int returnCode = p.waitFor();
if (logger.isWarnEnabled()) {
final BufferedReader is = new BufferedReader(new InputStreamReader(p.getInputStream()));
String line;
while ((line = is.readLine()) != null) {
logger.warn(line);
}
final BufferedReader is2 = new BufferedReader(new InputStreamReader(p.getErrorStream()));
while ((line = is2.readLine()) != null) {
logger.warn(line);
}
}
This could help.
It requires the footer height to be a fixed number. Basically, you have a div inside the footer div with it's normal content, with position: absolute
, and then the image with position: relative
, a negative z-index
so it stays "below" everything, and a negative top
value of the footer's height minus the image height (in my example, 50px - 600px = -550px
). Tested in Chrome 8, FireFox 3.6 and IE 9.
You need to use:
await client.PostAsync(uri, content);
Something like that:
var comment = "hello world";
var questionId = 1;
var formContent = new FormUrlEncodedContent(new[]
{
new KeyValuePair<string, string>("comment", comment),
new KeyValuePair<string, string>("questionId", questionId)
});
var myHttpClient = new HttpClient();
var response = await myHttpClient.PostAsync(uri.ToString(), formContent);
And if you need to get the response after post, you should use:
var stringContent = await response.Content.ReadAsStringAsync();
Hope it helps ;)
Both looks similar, but there are some key points:
save()
will trigger any overridden Model.save()
method, but update()
will not trigger this and make a direct update on the database level. So if you have some models with overridden save methods, you must either avoid using update or find another way to do whatever you are doing on that overridden save()
methods.
obj.save()
may have some side effects if you are not careful. You retrieve the object with get(...)
and all model field values are passed to your obj. When you call obj.save()
, django will save the current object state to record. So if some changes happens between get()
and save()
by some other process, then those changes will be lost. use save(update_fields=[.....])
for avoiding such problems.
Before Django version 1.5, Django was executing a SELECT
before INSERT
/UPDATE
, so it costs 2 query execution. With version 1.5, that method is deprecated.
In here, there is a good guide or save()
and update()
methods and how they are executed.
var str = "my name is saurabh ";
var empStr='',finalString='';
var chunk=[];
function reverse(str){
var i,j=0,n=str.length;
for(i=0;i<n;++i){
if(str[i]===' '){
chunk[j]=empStr;
empStr = '';
j++;
}else{
empStr=empStr+str[i];
}
}
for(var z=chunk.length-1;z>=0;z--){
finalString = finalString +' '+ chunk[z];
console.log(finalString);
}
return true;
}
reverse(str);
I know this is old but I found the way to make unload work using Chrome
window.onbeforeunload = function () {
myFunction();
};
I don't have enough reputation to comment yet, but, to add to ssharma's answer:
After you copy your htdocs folder to a safe place, just export your databases from PHPmyadmin. Simply go to each of your databases and click on the export tab at the top. Export them as sql (or whatever, really - just remember what you chose). Upgrade your XAMPP installation. Now, in the new version of XAMPP, create the databases that you want to re-insert. Example: you have a database named 'test' that you exported from your old installation, name the new, empty database the same thing. Now, go into 'test' and hit the import button along the top (right next to the export button). Click on choose file, find the sql file that you exported earlier (should be 'test.sql') and import. Your tables and data will be in place.
NOTE: There's an option to export the entire collection of databases (it names the file 127.0.0.1.sql). But, I've never had much luck getting it to import correctly. Do each of your databases separately to ensure it works. I made this post kind of long-winded, but that's because I like to write for the people that don't know exactly what they're doing yet (I, myself, was there not too long ago (all of us were at some point)).
Shorthand version of my answer:
1) Export your databases individually
2) Import into your new installation of XAMPP
I removed this error by write the following code
Open Terminal
openssl req -newkey rsa:2048 -new -nodes -keyout key.pem -out csr.pem
openssl x509 -req -days 365 -in csr.pem -signkey key.pem -out server.crt
Now use the server.crt and key.pem file
app.js or server.js file
var https = require('https');
var https_options = {
key: fs.readFileSync('key.pem', 'utf8'),
cert: fs.readFileSync('server.crt', 'utf8')
};
var server = https.createServer(https_options, app).listen(PORT);
console.log('HTTPS Server listening on %s:%s', HOST, PORT);
It works but the certificate is not trusted. You can view the image in image file.
basically hidden fields will be more useful and advantages to use with multi step form. we can use hidden fields to pass one step information to next step using hidden and keep it forwarding till the end step.
Cross-site request forgery is a very common website vulnerability. Requiring a secret, user-specific token in all form submissions will prevent CSRF attacks since attack sites cannot guess what the proper token is and any form submissions they perform on the behalf of the user will always fail.
If you need to store what step in a multi-page form the user is currently on, use hidden input fields. The user doesn't need to see this information, so hide it in a hidden input field.
General rule: Use the field to store anything that the user doesn't need to see, but that you want to send to the server on form submission.
Starting in version 0.7.9 you can use the filter operator .isnot
instead of comparing constraints, like this:
query.filter(User.name.isnot(None))
This method is only necessary if pep8 is a concern.
source: sqlalchemy documentation
I know that this is about matplotlib
, but using pandas
and seaborn
can save you a lot of time:
df = pd.DataFrame(zip(x*3, ["y"]*3+["z"]*3+["k"]*3, y+z+k), columns=["time", "kind", "data"])
plt.figure(figsize=(10, 6))
sns.barplot(x="time", hue="kind", y="data", data=df)
plt.show()
You can simply try it with a jenkinsfile. Create a Jenkins job with following pipeline script.
pipeline {
agent any
parameters {
booleanParam(defaultValue: true, description: '', name: 'userFlag')
}
stages {
stage('Trigger') {
steps {
script {
println("triggering the pipeline from a rest call...")
}
}
}
stage("foo") {
steps {
echo "flag: ${params.userFlag}"
}
}
}
}
Build the job once manually to get it configured & just create a http POST request to the Jenkins job as follows.
The format is http://server/job/myjob/buildWithParameters?PARAMETER=Value
curl http://admin:test123@localhost:30637/job/apd-test/buildWithParameters?userFlag=false --request POST
NestedScrollView
as the name suggests is used when there is a need for a scrolling view inside another scrolling view. Normally this would be difficult to accomplish since the system would be unable to decide which view to scroll.
This is where NestedScrollView
comes in.
Thought someone might like explanation by (annotated) example:
Below, if my deepClone() function does its job right, the test (as described in the 'it()' call) will succeed:
describe('deepClone() array copy', ()=>{
let source:any = {}
let clone:any = source
beforeAll(()=>{
source.a = [1,'string literal',{x:10, obj:{y:4}}]
clone = Utils.deepClone(source) // THE CLONING ACT TO BE TESTED - lets see it it does it right.
})
it('should create a clone which has unique identity, but equal values as the source object',()=>{
expect(source !== clone).toBe(true) // If we have different object instances...
expect(source).not.toBe(clone) // <= synonymous to the above. Will fail if: you remove the '.not', and if: the two being compared are indeed different objects.
expect(source).toEqual(clone) // ...that hold same values, all tests will succeed.
})
})
Of course this is not a complete test suite for my deepClone(), as I haven't tested here if the object literal in the array (and the one nested therein) also have distinct identity but same values.
You are able to cut all odd/even columns by using seq:
This would print all odd columns
echo 1,2,3,4,5,6,7,8,9,10 | cut -d, -f$(seq -s, 1 2 10)
To print all even columns you could use
echo 1,2,3,4,5,6,7,8,9,10 | cut -d, -f$(seq -s, 2 2 10)
By changing the second number of seq you can specify which columns to be printed.
If the specification which columns to print is more complex you could also use a "one-liner-if-clause" like
echo 1,2,3,4,5,6,7,8,9,10 | cut -d, -f$(for i in $(seq 1 10); do if [[ $i -lt 10 && $i -lt 5 ]];then echo -n $i,; else echo -n $i;fi;done)
This would print all columns from 1 to 5 - you can simply modify the conditions to create more complex conditions to specify weather a column shall be printed.
JSX will evaluate JavaScript expressions in curly braces
In this case, this.props.removeTaskFunction(todo)
is invoked and the return value is assigned to onClick
What you have to provide for onClick
is a function. To do this, you can wrap the value in an anonymous function.
export const samepleComponent = ({todoTasks, removeTaskFunction}) => {
const taskNodes = todoTasks.map(todo => (
<div>
{todo.task}
<button type="submit" onClick={() => removeTaskFunction(todo)}>Submit</button>
</div>
);
return (
<div className="todo-task-list">
{taskNodes}
</div>
);
}
});
It is the container of the Grid
that is imposing on its width. In this case, that's a ListBoxItem
, which is left-aligned by default. You can set it to stretch as follows:
<ListBox>
<!-- other XAML omitted, you just need to add the following bit -->
<ListBox.ItemContainerStyle>
<Style TargetType="ListBoxItem">
<Setter Property="HorizontalAlignment" Value="Stretch"/>
</Style>
</ListBox.ItemContainerStyle>
</ListBox>
Use
npx react-native-rename <newName>
With custom Bundle Identifier (Android only. For iOS, please use Xcode)
$ npx react-native-rename <newName> -b <bundleIdentifier>
First, Switch to new branch (optional but recommended)
$ git checkout -b rename-app
Then, Rename your app $ npx react-native-rename "Travel App"
With custom Bundle Identifier
$ npx react-native-rename "Travel App" -b com.junedomingo.travelapp
After you change the name, please make sure you go to the android folder and run gradlew clean
. then go back to the main project and run npx react-native run-android
.
Also If you have google-services.json file in your previous project, change accordingly with the new one ... then you are good to go :)
See More here https://github.com/junedomingo/react-native-rename#readme
add persist security info=True; in connection string.
A continue
statement without a label will re-execute from the condition the innermost while
or do
loop, and from the update expression of the innermost for
loop. It is often used to early-terminate a loop's processing and thereby avoid deeply-nested if
statements. In the following example continue
will get the next line, without processing the following statement in the loop.
while (getNext(line)) {
if (line.isEmpty() || line.isComment())
continue;
// More code here
}
With a label, continue
will re-execute from the loop with the corresponding label, rather than the innermost loop. This can be used to escape deeply-nested loops, or simply for clarity.
Sometimes continue
is also used as a placeholder in order to make an empty loop body more clear.
for (count = 0; foo.moreData(); count++)
continue;
The same statement without a label also exists in C and C++. The equivalent in Perl is next
.
This type of control flow is not recommended, but if you so choose you can also use continue
to simulate a limited form of goto
. In the following example the continue
will re-execute the empty for (;;)
loop.
aLoopName: for (;;) {
// ...
while (someCondition)
// ...
if (otherCondition)
continue aLoopName;
Use this to create the array in the first place:
byte[] array = Enumerable.Repeat((byte)0x20, <number of elements>).ToArray();
Replace <number of elements>
with the desired array size.