Supergeek, your non recursive function did not producte the correct result, but mine does. I believe yours does one too many additions.
private Point LocationOnClient(Control c)
{
Point retval = new Point(0, 0);
for (; c.Parent != null; c = c.Parent)
{ retval.Offset(c.Location); }
return retval;
}
Why cant you use the finally block?
Like
try {
} catch (Exception e) {
// THIS WILL EXECUTE IF THERE IS AN EXCEPTION IS THROWN IN THE TRY BLOCK
} finally {
// THIS WILL EXECUTE IRRESPECTIVE OF WHETHER AN EXCEPTION IS THROWN WITHIN THE TRY CATCH OR NOT
}
EDIT after question amended:
You can do:
int? returnFromFunction2 = null;
try {
returnFromFunction2 = function2();
return returnFromFunction2.value;
} catch (Exception e) {
// THIS WILL EXECUTE IF THERE IS AN EXCEPTION IS THROWN IN THE TRY BLOCK
} finally {
if (returnFromFunction2.HasValue) { // do something with value }
// THIS WILL EXECUTE IRRESPECTIVE OF WHETHER AN EXCEPTION IS THROWN WITHIN THE TRY CATCH OR NOT
}
You can use this if you want to assign a background image on the backend:
divContent.Attributes.Add("style"," background-image:
url('images/icon_stock.gif');");
You do like this. the function return the old text.
$('button').click(function(){
$(this).text(function(i,old){
return old=='Read More' ? 'Read Less' : 'Read More';
});
});
I got this error when try to launch MySql Workbench 8.0 on my macOS Catalina 10.15.3.
I solved this issue by installing Python 3.7 on my system.
I guess in future, when Workbench will have version greater than 8, it will require newer version of Python. Just look at the library path in the error and you will find required version.
Easy
import pymongo
conn = pymongo.MongoClient()
db = conn.test #test is my database
col = db.spam #Here spam is my collection
array = list(col.find())
print array
There you go
<object width="100" height="100">
<param name="movie" value="file.swf">
<embed src="file.swf" width="100" height="100">
</embed>
</object>
DECLARE @DDate date -- To store the current date
DECLARE @DTime time -- To store the current time
DECLARE @DateTime datetime -- To store the result of the concatenation
;
SET @DDate = GETDATE() -- Getting the current date
SET @DTime = GETDATE() -- Getting the current time
SET @DateTime = CONVERT(datetime, CONVERT(varchar(19), LTRIM(@DDate) + ' ' + LTRIM(@DTime) ));
;
/*
1. LTRIM the date and time do an automatic conversion of both types to string.
2. The inside CONVERT to varchar(19) is needed, because you cannot do a direct conversion to datetime
3. Once the inside conversion is done, the second do the final conversion to datetime.
*/
-- The following select shows the initial variables and the result of the concatenation
SELECT @DDate, @DTime, @DateTime
I think the Key and IV used for encryption using command line and decryption using your program are not same.
Please note that when you use the "-k" (different from "-K"), the input given is considered as a password from which the key is derived. Generally in this case, there is no need for the "-iv" option as both key and password will be derived from the input given with "-k" option.
It is not clear from your question, how you are ensuring that the Key and IV are same between encryption and decryption.
In my suggestion, better use "-K" and "-iv" option to explicitly specify the Key and IV during encryption and use the same for decryption. If you need to use "-k", then use the "-p" option to print the key and iv used for encryption and use the same in your decryption program.
More details can be obtained at https://www.openssl.org/docs/manmaster/apps/enc.html
The best approach would be to use the following, as there may be repetitive values in the first column.
var arr = [[12, 'AAA'], [12, 'BBB'], [12, 'CCC'],[28, 'DDD'], [18, 'CCC'],[12, 'DDD'],[18, 'CCC'],[28, 'DDD'],[28, 'DDD'],[58, 'BBB'],[68, 'BBB'],[78, 'BBB']];
arr.sort(function(a,b) {
return a[0]-b[0]
});
The answer given by Jemshit Iskenderov and Ignacio Vazquez-Abrams is really good. It can be further illustrated with this example: imagine that
a) A list with two vectors is given to you;
b) you would like to traverse the list and reverse the order of each one of the arrays
Let's say you have
v = np.array([1, 2,3,4])
b = np.array([3,4,6])
for i in [v, b]:
i = i[::-1] # this command does not reverse the string
print([v,b])
You will get
[array([1, 2, 3, 4]), array([3, 4, 6])]
On the other hand, if you do
v = np.array([1, 2,3,4])
b = np.array([3,4,6])
for i in [v, b]:
i[:] = i[::-1] # this command reverses the string
print([v,b])
The result is
[array([4, 3, 2, 1]), array([6, 4, 3])]
If you want exactly one byte, uint8_t defined in cstdint would be the most expressive.
Someone pointed me to this thread because I had this same issue but it didn't work for me. After hours of searching I found a solution using this - https://github.com/rewish/jquery-bgswitcher#readme
It has a few other options other than fade too.
If you want to use SimpleDateFormat
, you could write:
private final SimpleDateFormat sdf =
new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");
{ sdf.setTimeZone(TimeZone.getTimeZone("GMT")); }
private long parseTimeToMillis(final String time) throws ParseException
{ return sdf.parse("1970-01-01 " + time).getTime(); }
But a custom method would be much more efficient. SimpleDateFormat
, because of all its calendar support, time-zone support, daylight-savings-time support, and so on, is pretty slow. The slowness is worth it if you actually need some of those features, but since you don't, it might not be. (It depends how often you're calling this method, and whether efficiency is a concern for your application.)
Also, SimpleDateFormat
is non-thread-safe, which is sometimes a pain. (Without knowing anything about your application, I can't guess whether that matters.)
Personally, I'd probably write a custom method.
After setting up GOPRIVATE
and git config ...
People may still meeting problems like this when fetching private source:
https fetch: Get "https://private/user/repo?go-get=1": EOF
They can't use private repo without .git
extension.
The reason is the go tool has no idea about the VCS protocol of this repo, git
or svn
or any other, unlike github.com
or golang.org
them are hardcoded into go's source.
Then the go tool will do a https
query before fetching your private repo:
https://private/user/repo?go-get=1
If your private repo has no support for https
request, please use replace
to tell it directly :
require private/user/repo v1.0.0
...
replace private/user/repo => private.server/user/repo.git v1.0.0
Generally, I use null for values that I know can have a "null" state; for example
if(jane.isManager == false){
jane.employees = null
}
Otherwise, if its a variable or function that's not defined yet (and thus, is not "usable" at the moment) but is supposed to be setup later, I usually leave it undefined.
This is mostly a follow-on to @barry-staes's answer for using Pandoc. Homebrew has it as well, if you're on a Mac:
brew install pandoc
Pandoc supports GFM as an input format via the markdown_github
name.
Output to file
cat foo.md | pandoc -f markdown_github > foo.html
Open in Lynx
cat foo.md | pandoc -f markdown_github | lynx -stdin # To open in Lynx
Open in the default browser on OS X
cat foo.md | pandoc -f markdown_github > foo.html && open foo.html # To open in the default browser on OS X`
TextMate Integration
You can always pipe the current selection or current document to one of the above, as most editors allow you to do. You can also easily configure the environment so that pandoc
replaces the default Markdown processor used by the Markdown bundle.
First, create a shell script with the following contents (I'll call it ghmarkdown
):
#!/bin/bash
# Note included, optional --email-obfuscation arg
pandoc -f markdown_github --email-obfuscation=references
You can then set the TM_MARKDOWN
variable (in Preferences?Variables) to /path/to/ghmarkdown
, and it will replace the default Markdown processor.
This kind of depends on what you want to do with the results. If you're just after the numbers, a set-based option would be a numbers table - which comes in handy for all sorts of things.
For MSSQL 2005+, you can use a recursive CTE to generate a numbers table inline:
;WITH Numbers (N) AS (
SELECT 1 UNION ALL
SELECT 1 + N FROM Numbers WHERE N < 500
)
SELECT N FROM Numbers
OPTION (MAXRECURSION 500)
If you want the cells to resize depending on the content, then you must not specify a width to the table, the rows, or the cells.
If you don't want word wrap, assign the CSS style white-space: nowrap
to the cells.
Changing
RestResponse response = client.Execute(request);
to
IRestResponse response = client.Execute(request);
worked for me.
Attach a click event to top level elements outside the form wrapper, for example:
$('#header, #content, #footer').click(function(){
$('.form_wrapper').hide();
});
This will also work on touch devices, just make sure you don't include a parent of .form_wrapper in your list of selectors.
Click "File > New > Image Asset
"
Asset Type -> Choose -> Image
Browse your image
Set the other properties
Press Next
You will see the 4 different pixel-sizes of your images for use as a launcher-icon
Press Finish
!
This is a convention that programmer usually use to identify different file names for include files. So that if the other developers is working on their code, he can easily identify why this file is there and what is purpose of this file by just seeing the name of the file.
git remote -v
# View existing remotes
# origin https://github.com/user/repo.git (fetch)
# origin https://github.com/user/repo.git (push)
git remote set-url origin https://github.com/user/repo2.git
# Change the 'origin' remote's URL
git remote -v
# Verify new remote URL
# origin https://github.com/user/repo2.git (fetch)
# origin https://github.com/user/repo2.git (push)
For what it's worth here are the step by step instructions for doing this in an Android device. Should be the same for iOS:
You should then be able to see the SSL files in Charles. If you want to intercept and change the values you can use the "Map Local" tool which is really awesome:
For those of not crazy about VB, here it is in c#:
Note, you have to add a reference to Microsoft Shell Controls and Automation from the COM tab of the References dialog.
public static void Main(string[] args)
{
List<string> arrHeaders = new List<string>();
Shell32.Shell shell = new Shell32.Shell();
Shell32.Folder objFolder;
objFolder = shell.NameSpace(@"C:\temp\testprop");
for( int i = 0; i < short.MaxValue; i++ )
{
string header = objFolder.GetDetailsOf(null, i);
if (String.IsNullOrEmpty(header))
break;
arrHeaders.Add(header);
}
foreach(Shell32.FolderItem2 item in objFolder.Items())
{
for (int i = 0; i < arrHeaders.Count; i++)
{
Console.WriteLine(
$"{i}\t{arrHeaders[i]}: {objFolder.GetDetailsOf(item, i)}");
}
}
}
I have benchmarked these various technics under Python 3.7.0 (IPython).
c
is known): pre-compiled regex.s.partition(c)[0]
.c
may not be in s
): partition, split.import string, random, re
SYMBOLS = string.ascii_uppercase + string.digits
SIZE = 100
def create_test_set(string_length):
for _ in range(SIZE):
random_string = ''.join(random.choices(SYMBOLS, k=string_length))
yield (random.choice(random_string), random_string)
for string_length in (2**4, 2**8, 2**16, 2**32):
print("\nString length:", string_length)
print(" regex (compiled):", end=" ")
test_set_for_regex = ((re.compile("(.*?)" + c).match, s) for (c, s) in test_set)
%timeit [re_match(s).group() for (re_match, s) in test_set_for_regex]
test_set = list(create_test_set(16))
print(" partition: ", end=" ")
%timeit [s.partition(c)[0] for (c, s) in test_set]
print(" index: ", end=" ")
%timeit [s[:s.index(c)] for (c, s) in test_set]
print(" split (limited): ", end=" ")
%timeit [s.split(c, 1)[0] for (c, s) in test_set]
print(" split: ", end=" ")
%timeit [s.split(c)[0] for (c, s) in test_set]
print(" regex: ", end=" ")
%timeit [re.match("(.*?)" + c, s).group() for (c, s) in test_set]
String length: 16
regex (compiled): 156 ns ± 4.41 ns per loop (mean ± std. dev. of 7 runs, 10000000 loops each)
partition: 19.3 µs ± 430 ns per loop (mean ± std. dev. of 7 runs, 100000 loops each)
index: 26.1 µs ± 341 ns per loop (mean ± std. dev. of 7 runs, 10000 loops each)
split (limited): 26.8 µs ± 1.26 µs per loop (mean ± std. dev. of 7 runs, 10000 loops each)
split: 26.3 µs ± 835 ns per loop (mean ± std. dev. of 7 runs, 10000 loops each)
regex: 128 µs ± 4.02 µs per loop (mean ± std. dev. of 7 runs, 10000 loops each)
String length: 256
regex (compiled): 167 ns ± 2.7 ns per loop (mean ± std. dev. of 7 runs, 10000000 loops each)
partition: 20.9 µs ± 694 ns per loop (mean ± std. dev. of 7 runs, 10000 loops each)
index: 28.6 µs ± 2.73 µs per loop (mean ± std. dev. of 7 runs, 10000 loops each)
split (limited): 27.4 µs ± 979 ns per loop (mean ± std. dev. of 7 runs, 10000 loops each)
split: 31.5 µs ± 4.86 µs per loop (mean ± std. dev. of 7 runs, 10000 loops each)
regex: 148 µs ± 7.05 µs per loop (mean ± std. dev. of 7 runs, 1000 loops each)
String length: 65536
regex (compiled): 173 ns ± 3.95 ns per loop (mean ± std. dev. of 7 runs, 10000000 loops each)
partition: 20.9 µs ± 613 ns per loop (mean ± std. dev. of 7 runs, 100000 loops each)
index: 27.7 µs ± 515 ns per loop (mean ± std. dev. of 7 runs, 10000 loops each)
split (limited): 27.2 µs ± 796 ns per loop (mean ± std. dev. of 7 runs, 10000 loops each)
split: 26.5 µs ± 377 ns per loop (mean ± std. dev. of 7 runs, 10000 loops each)
regex: 128 µs ± 1.5 µs per loop (mean ± std. dev. of 7 runs, 10000 loops each)
String length: 4294967296
regex (compiled): 165 ns ± 1.2 ns per loop (mean ± std. dev. of 7 runs, 10000000 loops each)
partition: 19.9 µs ± 144 ns per loop (mean ± std. dev. of 7 runs, 100000 loops each)
index: 27.7 µs ± 571 ns per loop (mean ± std. dev. of 7 runs, 10000 loops each)
split (limited): 26.1 µs ± 472 ns per loop (mean ± std. dev. of 7 runs, 10000 loops each)
split: 28.1 µs ± 1.69 µs per loop (mean ± std. dev. of 7 runs, 10000 loops each)
regex: 137 µs ± 6.53 µs per loop (mean ± std. dev. of 7 runs, 10000 loops each)
just place your fonts inside app/assets/fonts folder and set the autoload path when app start using writing the code in application.rb
config.assets.paths << Rails.root.join("app", "assets", "fonts") and
then use the following code in css.
@font-face {
font-family: 'icomoon';
src: asset-url('icomoon.eot');
src: asset-url('icomoon.eot') format('embedded-opentype'),
asset-url('icomoon.woff') format('woff'),
asset-url('icomoon.ttf') format('truetype'),
asset-url('icomoon.svg') format('svg');
font-weight: normal;
font-style: normal;
}
Give it a try.
Thanks
After hours of googling: No, it's not possible without JavaScript. The animation-iteration-count: 1;
is internally saved in the animation
shothand attribute, which gets resetted and overwritten on :hover
. When we blur the <a>
and release the :hover
the old class reapplies and therefore again resets the animation
attribute.
There sadly is no way to save a certain attribute states across element states.
You'll have to use JavaScript.
$mystring = "this is the text I would like to truncate";
// Pass your variable to the function
$mystring = truncate($mystring);
// Truncated tring printed out;
echo $mystring;
//truncate text function
public function truncate($text) {
//specify number fo characters to shorten by
$chars = 25;
$text = $text." ";
$text = substr($text,0,$chars);
$text = substr($text,0,strrpos($text,' '));
$text = $text."...";
return $text;
}
HeyRed.Mime.MimeGuesser.GuessMimeType
from Nuget would be the ultimate solution if you want to host your ASP.NET solution on non-windows environments.
File extension mapping is very insecure. If an attacker would upload invalid extensions, a mapping dictionary would e.g. allow executables to be distributed inside .jpg files. Therefore, always use a content-sniffing library to know the real content-type.
public static string MimeTypeFrom(byte[] dataBytes, string fileName)
{
var contentType = HeyRed.Mime.MimeGuesser.GuessMimeType(dataBytes);
if (string.IsNullOrEmpty(contentType))
{
return HeyRed.Mime.MimeTypesMap.GetMimeType(fileName);
}
return contentType;
Use make (chan int)
instead of nil
. The first value has to be the same type that your map holds.
package main
import "fmt"
func main() {
var sessions = map[string] chan int{}
sessions["somekey"] = make(chan int)
fmt.Printf ("%d\n", len(sessions)) // 1
// Remove somekey's value from sessions
delete(sessions, "somekey")
fmt.Printf ("%d\n", len(sessions)) // 0
}
UPDATE: Corrected my answer.
You need:
sprintf(Buffer,"Hello World");
sprintf(Buffer + strlen(Buffer),"Good Morning");
sprintf(Buffer + strlen(Buffer),"Good Afternoon");
and of course you need your buffer to be big enough.
I am try to catch your point.I hope it is helpful.....
if (session.isNew()){
title = "Welcome to my website";
session.setAttribute(userIDKey, userID);
The solution, as Dennis Smolek said, is dead simple. Set window.location.href
to the URL you want to switch to and it just works.
For example, if you had this method in your component's class file (controller):
goCNN() {
window.location.href='http://www.cnn.com/';
}
Then you could call it quite simply with the appropriate (click)
call on a button (or whatever) in your template:
<button (click)="goCNN()">Go to CNN</button>
Not an exact answer to your question, but a bit of information: if your device does use NTP for time (eg. if it is a tablet with no 3G or GPS capabilities), the server can be configured in /system/etc/gps.conf
- obviously this file can only be edited with root access, but is viewable on non-rooted devices.
Here's a little less opinionated version of the RawHTML function posted before. It lets you:
<br />
'sRawHTML></RawHTML>
)Here's the component:
const RawHTML = ({ children, tag = 'div', nl2br = true, ...rest }) =>
React.createElement(tag, {
dangerouslySetInnerHTML: {
__html: nl2br
? children && children.replace(/\n/g, '<br />')
: children,
},
...rest,
});
RawHTML.propTypes = {
children: PropTypes.string,
nl2br: PropTypes.bool,
tag: PropTypes.string,
};
Usage:
<RawHTML>{'First · Second'}</RawHTML>
<RawHTML tag="h2">{'First · Second'}</RawHTML>
<RawHTML tag="h2" className="test">{'First · Second'}</RawHTML>
<RawHTML>{'first line\nsecond line'}</RawHTML>
<RawHTML nl2br={false}>{'first line\nsecond line'}</RawHTML>
<RawHTML></RawHTML>
Output:
<div>First · Second</div>
<h2>First · Second</h2>
<h2 class="test">First · Second</h2>
<div>first line<br>second line</div>
<div>first line
second line</div>
<div></div>
It will break on:
<RawHTML><h1>First · Second</h1></RawHTML>
Click on the menu Window > Preferences and go to Workspaces like below :
| General
| Startup and Shutdown
| Workspaces
Select the workspace to delete and click on the Remove button.
I think you are confused with the printf(String format, Object... args)
method. The first argument is the format string, which is mandatory, rest you can pass an arbitrary number of Object
s.
There is no such overload for both the print()
and println()
methods.
While reading this thread, I often get the impression that people are using "UTF-8" as a synonym to "Unicode". Please make a distinction between Unicode's "Code-Points" which are an enlarged relative of the ASCII code and Unicode's various "encodings". And there are a few of them, of which UTF-8, UTF-16 and UTF-32 are the current ones and a few more are obsolete.
Please, UTF-8 (as well as all other encodings) exists and have meaning in input or in output only. Internally, since Perl 5.8.1, all strings are kept as Unicode "Code-points". True, you have to enable some features as admiringly covered previously.
round(number, 1)
change the package of classes, your files are probably in the wrong package, happened to me when I copied the code from a friend, it was the default package and mine was another, hence the netbeans could not compile because of it.
Try to execute
mvn -U clean
or Run > Maven Clean and Maven > Update snapshots from project context menu in eclipse
If you want add a day (24 hours) to current datetime you can add milliseconds like this:
new Date(Date.now() + ( 3600 * 1000 * 24))
There are several options:
Map<Integer, Map<Integer, V>> map = //...
//...
map.get(2).get(5);
public class Key {
private final int x;
private final int y;
public Key(int x, int y) {
this.x = x;
this.y = y;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (!(o instanceof Key)) return false;
Key key = (Key) o;
return x == key.x && y == key.y;
}
@Override
public int hashCode() {
int result = x;
result = 31 * result + y;
return result;
}
}
Implementing equals()
and hashCode()
is crucial here. Then you simply use:
Map<Key, V> map = //...
and:
map.get(new Key(2, 5));
Table
from GuavaTable<Integer, Integer, V> table = HashBasedTable.create();
//...
table.get(2, 5);
Table
uses map of maps underneath.
Notice that special Key
class is the only approach that scales to n-dimensions. You might also consider:
Map<List<Integer>, V> map = //...
but that's terrible from performance perspective, as well as readability and correctness (no easy way to enforce list size).
Maybe take a look at Scala where you have tuples and case
classes (replacing whole Key
class with one-liner).
glob()
and FilesystemIterator
examples:
/*
* glob() examples
*/
// get the array of full paths
$result = glob( 'path/*' );
// get the array of file names
$result = array_map( function( $item ) {
return basename( $item );
}, glob( 'path/*' ) );
/*
* FilesystemIterator examples
*/
// get the array of file names by using FilesystemIterator and array_map()
$result = array_map( function( $item ) {
// $item: SplFileInfo object
return $item->getFilename();
}, iterator_to_array( new FilesystemIterator( 'path' ), false ) );
// get the array of file names by using FilesystemIterator and iterator_apply() filter
$it = new FilesystemIterator( 'path' );
iterator_apply(
$it,
function( $item, &$result ) {
// $item: FilesystemIterator object that points to current element
$result[] = (string) $item;
// The function must return TRUE in order to continue iterating
return true;
},
array( $it, &$result )
);
Normally, you do this with generics, for example:
MapEntToObj<T>(IQueryable<T> query) {...}
The compiler should then infer the T
when you call MapEntToObj(query)
. Not quite sure what you want to do inside the method, so I can't tell whether this is useful... the problem is that inside MapEntToObj
you still can't name the T
- you can either:
T
T
to do thingsbut other than that, it is quite hard to manipulate anonymous types - not least because they are immutable ;-p
Another trick (when extracting data) is to also pass a selector - i.e. something like:
Foo<TSource, TValue>(IEnumerable<TSource> source,
Func<TSource,string> name) {
foreach(TSource item in source) Console.WriteLine(name(item));
}
...
Foo(query, x=>x.Title);
To add a column I just had to follow these steps :
rails generate migration add_fieldname_to_tablename fieldname:string
Alternative
rails generate migration addFieldnameToTablename
Once the migration is generated, then edit the migration and define all the attributes you want that column added to have.
Note: Table names in Rails are always plural (to match DB conventions). Example using one of the steps mentioned previously-
rails generate migration addEmailToUsers
rake db:migrate
Or
db/schema.rb
, Add the columns you want in the SQL query. Run this command: rake db:schema:load
Warning/Note
Bear in mind that, running rake db:schema:load
automatically wipes all data in your tables.
The idea of mapping an function to array of data comes from functional programming. You shouldn't think about array_map
as a foreach
loop that calls a function on each element of the array (even though that's how it's implemented). It should be thought of as applying the function to each element in the array independently.
In theory such things as function mapping can be done in parallel since the function being applied to the data should ONLY affect the data and NOT the global state. This is because an array_map
could choose any order in which to apply the function to the items in (even though in PHP it doesn't).
array_walk
on the other hand it the exact opposite approach to handling arrays of data. Instead of handling each item separately, it uses a state (&$userdata
) and can edit the item in place (much like a foreach loop). Since each time an item has the $funcname
applied to it, it could change the global state of the program and therefor requires a single correct way of processing the items.
Back in PHP land, array_map
and array_walk
are almost identical except array_walk
gives you more control over the iteration of data and is normally used to "change" the data in-place vs returning a new "changed" array.
array_filter
is really an application of array_walk
(or array_reduce
) and it more-or-less just provided for convenience.
var fs = require("fs");
var filename = "./index.html";
function start(resp) {
resp.writeHead(200, {
"Content-Type": "text/html"
});
fs.readFile(filename, "utf8", function(err, data) {
if (err) throw err;
resp.write(data);
resp.end();
});
}
The accept attribute specifies a comma-separated list of content types (MIME types) that the target of the form will process correctly. Unfortunately this attribute is ignored by all the major browsers, so it does not affect the browser's file dialog in any way.
Prefer interfaces over abstract classes
Rationale, the main points to consider [two already mentioned here] are :
[1] It adds more code, of course, but if brevity is your primary concern, you probably should have avoided Java in the first place!
[2] Joshua Bloch, Effective Java, items 16-18.
Using base64.b16encode
in python2 (its built-in)
>>> s = 'Hello world !!'
>>> h = base64.b16encode(s)
>>> ':'.join([h[i:i+2] for i in xrange(0, len(h), 2)]
'48:65:6C:6C:6F:20:77:6F:72:6C:64:20:21:21'
Based on @caf's answer, this working nicely for me.
Calculate average for given PID:
measure.sh
times=100
total=0
for i in $(seq 1 $times)
do
OUTPUT=$(top -b -n 1 -d 0.1 -p $1 | tail -1 | awk '{print $9}')
echo -n "$i time: ${OUTPUT}"\\r
total=`echo "$total + $OUTPUT" | bc -l`
done
#echo "Average: $total / $times" | bc
average=`echo "scale=2; $total / $times" | bc`
echo "Average: $average"
Usage:
# send PID as argument
sh measure.sh 3282
In my case it was a duplicate Swift Flag
entry inside my Target's Build Settings > Other Swift Flags. I had two -Xfrontend
entries in it.
You need to split the string:
>>> s = 'http://www.domain.com/?s=some&two=20'
>>> s.split('&')
['http://www.domain.com/?s=some', 'two=20']
That will return a list as you can see so you can do:
>>> s2 = s.split('&')[0]
>>> print s2
http://www.domain.com/?s=some
pandas.merge()
is the underlying function used for all merge/join behavior.
DataFrames provide the pandas.DataFrame.merge()
and pandas.DataFrame.join()
methods as a convenient way to access the capabilities of pandas.merge()
. For example, df1.merge(right=df2, ...)
is equivalent to pandas.merge(left=df1, right=df2, ...)
.
These are the main differences between df.join()
and df.merge()
:
df1.join(df2)
always joins via the index of df2
, but df1.merge(df2)
can join to one or more columns of df2
(default) or to the index of df2
(with right_index=True
). df1.join(df2)
uses the index of df1
and df1.merge(df2)
uses column(s) of df1
. That can be overridden by specifying df1.join(df2, on=key_or_keys)
or df1.merge(df2, left_index=True)
. df1.join(df2)
does a left join by default (keeps all rows of df1
), but df.merge
does an inner join by default (returns only matching rows of df1
and df2
).So, the generic approach is to use pandas.merge(df1, df2)
or df1.merge(df2)
. But for a number of common situations (keeping all rows of df1
and joining to an index in df2
), you can save some typing by using df1.join(df2)
instead.
Some notes on these issues from the documentation at http://pandas.pydata.org/pandas-docs/stable/merging.html#database-style-dataframe-joining-merging:
merge
is a function in the pandas namespace, and it is also available as a DataFrame instance method, with the calling DataFrame being implicitly considered the left object in the join.The related
DataFrame.join
method, usesmerge
internally for the index-on-index and index-on-column(s) joins, but joins on indexes by default rather than trying to join on common columns (the default behavior formerge
). If you are joining on index, you may wish to useDataFrame.join
to save yourself some typing.
...
These two function calls are completely equivalent:
left.join(right, on=key_or_keys) pd.merge(left, right, left_on=key_or_keys, right_index=True, how='left', sort=False)
In Chrome, go to options (Customize and Control, the 3 dots/bars at top right) ---> More Tools ---> save page as
save page as
filename : any_name.html
save as type : webpage complete.
Then you will get any_name.html
and any_name folder
.
If your SQL Server version supports the function FORMAT you could do it like this:
select format(getdate(), 'yyyy-MM-dd HH:mm:ss.fff')
Installing on a Mac - Sierra - After numerous failed attempts to install and run gulp globally via the command line using several different instructions I found I added this to my path and it worked:
export PATH=/usr/local/Cellar/node/7.6.0/libexec/npm/bin/:$PATH
I got that path from the text output when installing gulp.
My answer is a bit late, but as a quick test, make sure you are using the latest version of libraries.
In my case after updating a nuget library that was referencing another library causing the problem the problem disappeared.
You have misunderstood the Python list
object. It is similar to a C pointer-array
. It does not actually "copy" the object which you append to it. Instead, it just store a "pointer" to that object.
Try the following code:
>>> d={}
>>> dlist=[]
>>> for i in xrange(0,3):
d['data']=i
dlist.append(d)
print(d)
{'data': 0}
{'data': 1}
{'data': 2}
>>> print(dlist)
[{'data': 2}, {'data': 2}, {'data': 2}]
So why is print(dlist)
not the same as print(d)
?
The following code shows you the reason:
>>> for i in dlist:
print "the list item point to object:", id(i)
the list item point to object: 47472232
the list item point to object: 47472232
the list item point to object: 47472232
So you can see all the items in the dlist
is actually pointing to the same dict
object.
The real answer to this question will be to append the "copy" of the target item, by using d.copy()
.
>>> dlist=[]
>>> for i in xrange(0,3):
d['data']=i
dlist.append(d.copy())
print(d)
{'data': 0}
{'data': 1}
{'data': 2}
>>> print dlist
[{'data': 0}, {'data': 1}, {'data': 2}]
Try the id()
trick, you can see the list items actually point to completely different objects.
>>> for i in dlist:
print "the list item points to object:", id(i)
the list item points to object: 33861576
the list item points to object: 47472520
the list item points to object: 47458120
One of the coolest benefits of using something like Spring is that you don't have to wire your objects together. Zeus's head splits open and your classes appear, fully formed with all of their dependencies created and wired-in, as needed. It's magical and fantastic.
The more you say ClassINeed classINeed = (ClassINeed)ApplicationContext.getBean("classINeed");
, the less magic you're getting. Less code is almost always better. If your class really needed a ClassINeed bean, why didn't you just wire it in?
That said, something obviously needs to create the first object. There's nothing wrong with your main method acquiring a bean or two via getBean(), but you should avoid it because whenever you're using it, you're not really using all of the magic of Spring.
For .Net 4 use:
ServicePointManager.SecurityProtocol = (SecurityProtocolType)768 | (SecurityProtocolType)3072;
SQL Server doesn't have regular expressions. It uses the LIKE pattern matching syntax which isn't the same.
As it happens, you are close. Just need leading+trailing wildcards and move the NOT
WHERE whatever NOT LIKE '%[a-z0-9]%'
There is a Chrome extension called CORS Toggle.
Click here to access it and add it to Chrome.
After adding it, toggle it to the on position to allow cross-domain requests.
OdeToCode has a good article covering the basic differences
As it says in the article:
Proper indexes are crucial for good performance in large databases. Sometimes you can make up for a poorly written query with a good index, but it can be hard to make up for poor indexing with even the best queries.
Quite true, too... If you're just starting out with it, I'd focus on clustered and composite indexes, since they'll probably be what you use the most.
suppose your JAR file is in C:\Documents and Settings\mmeher\Desktop\jar and the JAR file name is xx.jar, then write the below two commands in command prompt:
1> cd C:\Documents and Settings\mmeher\Desktop\jar
2> jar xf xx.jar
$("a").on("click", function(event){
//check the value of this.hash
if(this.hash !== ""){
event.preventDefault();
$("html, body").animate({scrollTop:$(this.hash).offset().top}, 500);
//add hash to the current scroll position
window.location.hash = this.hash;
}
});
The &
makes the command run in the background.
From man bash
:
If a command is terminated by the control operator &, the shell executes the command in the background in a subshell. The shell does not wait for the command to finish, and the return status is 0.
You don't need the CELL() part of your formulas:
=INDIRECT(ADDRESS(B1,B2))
or
=OFFSET($A$1, B1-1,B2-1)
will both work. Note that both INDIRECT
and OFFSET
are volatile functions. Volatile functions can slow down calculation because they are calculated at every single recalculation.
An other service that could occupied the port 80 is BranchCache
services.msc
showing it as "BranchCache"
or use the net
command to stop the service like
net stop PeerDistSvc
Update:
PeerDistSvc is a service behind svhost.exe, to view svchost services type
tasklist /svc /fi "imagename eq svchost.exe"
Here's where they're stored on Windows XP through Windows Server 2012 R2:
HKEY_CURRENT_USER\Environment
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment
In case if we have multiple docker files in our environment just Dockerfile wont suffice our requirement.
docker build -t ihub -f Dockerfile.ihub .
So use the file
(-f argument) command to specify your docker file(Dockerfile.ihub)
This is a small adition to @Andrew Dunn's post above
Combining the 2 is possible to generate readable JS and matching output
var foo = "Bob\n\
is\n\
cool.\n\";
note that the span & group are indexed for multi capture groups in a regex
regex_with_3_groups=r"([a-z])([0-9]+)([A-Z])"
for match in re.finditer(regex_with_3_groups, string):
for idx in range(0, 4):
print(match.span(idx), match.group(idx))
Here is a technique I use that has worked well:
<div>_x000D_
<div style="display: table-cell; width: 100%"> </div>_x000D_
<div style="display: table-cell; white-space: nowrap;">Something Here</div>_x000D_
</div>
_x000D_
Open app.config on client side and add maxBufferSize and maxReceivedMessageSize attributes if it is not available
Original
<system.serviceModel>
<bindings>
<basicHttpBinding>
<binding name="Service1Soap"/>
</basicHttpBinding>
</bindings>
After Edit/Update
<system.serviceModel>
<bindings>
<basicHttpBinding>
<binding name="Service1Soap" maxBufferSize="2147483647" maxReceivedMessageSize="2147483647"/>
</basicHttpBinding>
</bindings>
When a fragment is moved to the backstack, it isn't destroyed. All the instance variables remain there. So this is the place to save your data. In onActivityCreated
you check the following conditions:
Edit: Here's an example
public class ExampleFragment extends Fragment {
private List<String> myData;
@Override
public void onSaveInstanceState(final Bundle outState) {
super.onSaveInstanceState(outState);
outState.putSerializable("list", (Serializable) myData);
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
if (savedInstanceState != null) {
//probably orientation change
myData = (List<String>) savedInstanceState.getSerializable("list");
} else {
if (myData != null) {
//returning from backstack, data is fine, do nothing
} else {
//newly created, compute data
myData = computeData();
}
}
}
}
It is a file ext that some folks used for a while to denote that it was PHP generated HTML. As servers like Apache don't care what you use as a file ext as long as it is mapped to something, you could go ahead and call all your PHP files .jimyBobSmith and it would happily run them. PHTML just happened to be a trend that caught on for a while.
In most cases simply switching the virtual machine network adapter to bridged mode is enough to make the guest machine accessible from outside.
Sometimes it's possible for the guest machine to not automatically receive an IP which matches the host's IP range after switching to bridged mode (even after rebooting the guest machine). This is often caused by a malfunctioning or badly configured DHCP on the host network.
For example, if the host IP is 192.168.1.1
the guest machine needs to have an IP in the format 192.168.1.*
where only the last group of numbers is allowed to be different from the host IP.
You can use a terminal (shell) and type ifconfig
(ipconfig
for Windows guests) to check what IP is assigned to the guest machine and change it if required.
If the host and guest IPs do not match simply setting a static IP for the guest machine explicitly should resolve the issue.
System
- class which is final
in nature. public final class System{}
. Belongs to java.lang
package
out
- static
reference variable of type PrintStream
println()
- non static
method in PrintStream
class.
PrintStream
belongs to java.io
package.
To understand it better you can visit : How System.out.println() Works In Java
problem solved after changing the FetchType to Lazy
Note that any IDisposable implementation should follow the below pattern (IMHO). I developed this pattern based on info from several excellent .NET "gods" the .NET Framework Design Guidelines (note that MSDN does not follow this for some reason!). The .NET Framework Design Guidelines were written by Krzysztof Cwalina (CLR Architect at the time) and Brad Abrams (I believe the CLR Program Manager at the time) and Bill Wagner ([Effective C#] and [More Effective C#] (just take a look for these on Amazon.com:
Note that you should NEVER implement a Finalizer unless your class directly contains (not inherits) UNmanaged resources. Once you implement a Finalizer in a class, even if it is never called, it is guaranteed to live for an extra collection. It is automatically placed on the Finalization Queue (which runs on a single thread). Also, one very important note...all code executed within a Finalizer (should you need to implement one) MUST be thread-safe AND exception-safe! BAD things will happen otherwise...(i.e. undetermined behavior and in the case of an exception, a fatal unrecoverable application crash).
The pattern I've put together (and written a code snippet for) follows:
#region IDisposable implementation
//TODO remember to make this class inherit from IDisposable -> $className$ : IDisposable
// Default initialization for a bool is 'false'
private bool IsDisposed { get; set; }
/// <summary>
/// Implementation of Dispose according to .NET Framework Design Guidelines.
/// </summary>
/// <remarks>Do not make this method virtual.
/// A derived class should not be able to override this method.
/// </remarks>
public void Dispose()
{
Dispose( true );
// This object will be cleaned up by the Dispose method.
// Therefore, you should call GC.SupressFinalize to
// take this object off the finalization queue
// and prevent finalization code for this object
// from executing a second time.
// Always use SuppressFinalize() in case a subclass
// of this type implements a finalizer.
GC.SuppressFinalize( this );
}
/// <summary>
/// Overloaded Implementation of Dispose.
/// </summary>
/// <param name="isDisposing"></param>
/// <remarks>
/// <para><list type="bulleted">Dispose(bool isDisposing) executes in two distinct scenarios.
/// <item>If <paramref name="isDisposing"/> equals true, the method has been called directly
/// or indirectly by a user's code. Managed and unmanaged resources
/// can be disposed.</item>
/// <item>If <paramref name="isDisposing"/> equals false, the method has been called by the
/// runtime from inside the finalizer and you should not reference
/// other objects. Only unmanaged resources can be disposed.</item></list></para>
/// </remarks>
protected virtual void Dispose( bool isDisposing )
{
// TODO If you need thread safety, use a lock around these
// operations, as well as in your methods that use the resource.
try
{
if( !this.IsDisposed )
{
if( isDisposing )
{
// TODO Release all managed resources here
$end$
}
// TODO Release all unmanaged resources here
// TODO explicitly set root references to null to expressly tell the GarbageCollector
// that the resources have been disposed of and its ok to release the memory allocated for them.
}
}
finally
{
// explicitly call the base class Dispose implementation
base.Dispose( isDisposing );
this.IsDisposed = true;
}
}
//TODO Uncomment this code if this class will contain members which are UNmanaged
//
///// <summary>Finalizer for $className$</summary>
///// <remarks>This finalizer will run only if the Dispose method does not get called.
///// It gives your base class the opportunity to finalize.
///// DO NOT provide finalizers in types derived from this class.
///// All code executed within a Finalizer MUST be thread-safe!</remarks>
// ~$className$()
// {
// Dispose( false );
// }
#endregion IDisposable implementation
Here is the code for implementing IDisposable in a derived class. Note that you do not need to explicitly list inheritance from IDisposable in the definition of the derived class.
public DerivedClass : BaseClass, IDisposable (remove the IDisposable because it is inherited from BaseClass)
protected override void Dispose( bool isDisposing )
{
try
{
if ( !this.IsDisposed )
{
if ( isDisposing )
{
// Release all managed resources here
}
}
}
finally
{
// explicitly call the base class Dispose implementation
base.Dispose( isDisposing );
}
}
I've posted this implementation on my blog at: How to Properly Implement the Dispose Pattern
No. I guess you were hoping that something like num1 = 20 if someBoolValue
would work, but it doesn't. I think the best way is with the if
statement as you have written it:
if someBoolValue:
num1 = 20
On a multi-core server, use GNU parallel to count file lines in parallel. After each files line count is printed, bc sums all line counts.
find . -name '*.txt' | parallel 'wc -l {}' 2>/dev/null | paste -sd+ - | bc
To save space, you can even keep all files compressed. The following line uncompresses each file and counts its lines in parallel, then sums all counts.
find . -name '*.xz' | parallel 'xzcat {} | wc -l' 2>/dev/null | paste -sd+ - | bc
Depends what it does. If your app takes up too much memory, or makes calls to functions/classes it shouldn't, SpringBoard may terminate it. However, it will most likely be rejected by Apple, as it does not follow their 7 background uses.
You have to pass the route parameters to the route
method, for example:
<li><a href="{{ route('user.profile', $nickname) }}">Profile</a></li>
<li><a href="{{ route('user.settings', $nickname) }}">Settings</a></li>
It's because, both routes have a {nickname}
in the route declaration. I've used $nickname
for example but make sure you change the $nickname
to appropriate value/variable, for example, it could be something like the following:
<li><a href="{{ route('user.settings', auth()->user()->nickname) }}">Settings</a></li>
Comparator
provides a way for you to provide custom comparison logic for types that you have no control over.
Comparable
allows you to specify how objects that you are implementing get compared.
Obviously, if you don't have control over a class (or you want to provide multiple ways to compare objects that you do have control over) then use Comparator
.
Otherwise you can use Comparable
.
This one is a small one:
(([0-9A-F]{2}[:-]?){6})
Have in mind, that weird mix of several chars or separators could pass.
Use LoadPatientRecords()
after a successful insertion.
Try the below code
private void btnSubmit_Click(object sender, EventArgs e)
{
if (btnSubmit.Text == "Clear")
{
btnSubmit.Text = "Submit";
txtpFirstName.Focus();
}
else
{
btnSubmit.Text = "Clear";
int result = AddPatientRecord();
if (result > 0)
{
MessageBox.Show("Insert Successful");
LoadPatientRecords();
}
else
MessageBox.Show("Insert Fail");
}
}
I can't recommend the use of Moment enough. If you are able to use third-party libraries, I highly recommend doing so. Beyond just formatting, it deals with timezones, parsing, durations and time travel extremely well and will pay dividends in simplicity and time (at the small expense of size, abstraction and performance).
You wanted something that looked like this:
Friday 2:00pm 1 Feb 2013
Well, with Moment all you need you to do is this:
import Moment from "moment";
Moment().format( "dddd h:mma D MMM YYYY" ); //=> "Wednesday 9:20am 9 Dec 2020"
And if you wanted to match that exact date and time, all you would need to do is this:
import Moment from "moment";
Moment( "2013-2-1 14:00:00" ).format( "dddd h:mma D MMM YYYY" ) ); //=> "Friday 2:00pm 1 Feb 2013"
There's a myriad of other formatting options that can be found here.
Go to their home page to see more detailed instructions, but if you're using npm or yarn it's as simple as:
npm install moment --save
or
yarn add moment
You can use SelectedValue:
<EditItemTemplate>
<asp:DropDownList ID="ddlPBXTypeNS"
runat="server"
Width="200px"
DataSourceID="YDS"
DataTextField="CaptionValue"
DataValueField="OID"
SelectedValue='<%# Bind("YourForeignKey") %>' />
<asp:YourDataSource ID="YDS" ...../>
</EditItemTemplate>
For one matched character replace, use str_replace:
$string = str_replace(' ', '_', $string);
For all matched character replace, use preg_replace:
$string = preg_replace('/\s+/', '_', $string);
The method .appendChild()
is used to add a new element NOT add text to an existing element.
Example:
var p = document.createElement("p");
document.body.appendChild(p);
Reference: Mozilla Developer Network
The standard approach for this is using .innerHTML()
. But if you want a alternate solution you could try using element.textContent
.
Example:
document.getElementById("foo").textContent = "This is som text";
Reference: Mozilla Developer Network
How ever this is only supported in IE 9+
file_get_contents('php://input') will not always work.
I have a request with in the headers "content-length=735" and "php://input" is empty string. So depends on how good/valid the HTTP request is.
According to PEP8, long lines should be placed in parentheses. When using parentheses, the lines can be broken up without using backslashes. You should also try to put the line break after boolean operators.
Further to this, if you're using a code style check such as pycodestyle, the next logical line needs to have different indentation to your code block.
For example:
if (abcdefghijklmnopqrstuvwxyz > some_other_long_identifier and
here_is_another_long_identifier != and_finally_another_long_name):
# ... your code here ...
pass
You can use all Unicode characters and the escape characters \n
and \t
. An example:
document.getElementById("test").onclick = function() {_x000D_
alert(_x000D_
'This is an alert with basic formatting\n\n' _x000D_
+ "\t• list item 1\n" _x000D_
+ '\t• list item 2\n' _x000D_
+ '\t• list item 3\n\n' _x000D_
+ '???????????????????????\n\n' _x000D_
+ 'Simple table\n\n' _x000D_
+ 'Char\t| Result\n' _x000D_
+ '\\n\t| line break\n' _x000D_
+ '\\t\t| tab space'_x000D_
);_x000D_
}
_x000D_
<!DOCTYPE html>_x000D_
<title>Alert formatting</title>_x000D_
<meta charset=utf-8>_x000D_
<button id=test>Click</button>
_x000D_
Result in Firefox:
You get the same look in almost all browsers.
I think I encountered the same problem as you. I addressed this problem with the following steps:
1) Go to Google Developers Console
2) Set JavaScript origins:
3) Set Redirect URIs:
for Swift 3.1 or later
firstly add protocol UITextFieldDelegate
like:-
class PinCodeViewController: UIViewController, UITextFieldDelegate {
.....
.....
.....
}
after that create your UITextField and set delegate
Complete Exp: -
import UIKit
class PinCodeViewController: UIViewController, UITextFieldDelegate {
let pinCodetextField: UITextField = {
let tf = UITextField()
tf.placeholder = "please enter your pincode"
tf.font = UIFont.systemFont(ofSize: 15)
tf.borderStyle = UITextBorderStyle.roundedRect
tf.autocorrectionType = UITextAutocorrectionType.no
tf.keyboardType = UIKeyboardType.numberPad
tf.clearButtonMode = UITextFieldViewMode.whileEditing;
tf.contentVerticalAlignment = UIControlContentVerticalAlignment.center
return tf
}()
override func viewDidLoad() {
super.viewDidLoad()
view.addSubview(pinCodetextField)
//----- setup your textfield anchor or position where you want to show it-----
// after that
pinCodetextField.delegate = self // setting the delegate
}
func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {
return !(textField.text?.characters.count == 6 && string != "")
} // this is return the maximum characters in textfield
}
You may find that gnuplot's for loops are useful in this case, if you adjust your filenames or graph titles appropriately.
e.g.
filenames = "first second third fourth fifth"
plot for [file in filenames] file."dat" using 1:2 with lines
and
filename(n) = sprintf("file_%d", n)
plot for [i=1:10] filename(i) using 1:2 with lines
Advice for R
newcomers like me : beware, the following is a list of a single object :
> mylist <- list (1:10)
> length (mylist)
[1] 1
In such a case you are not looking for the length of the list, but of its first element :
> length (mylist[[1]])
[1] 10
This is a "true" list :
> mylist <- list(1:10, rnorm(25), letters[1:3])
> length (mylist)
[1] 3
Also, it seems that R
considers a data.frame as a list :
> df <- data.frame (matrix(0, ncol = 30, nrow = 2))
> typeof (df)
[1] "list"
In such a case you may be interested in ncol()
and nrow()
rather than length()
:
> ncol (df)
[1] 30
> nrow (df)
[1] 2
Though length()
will also work (but it's a trick when your data.frame has only one column) :
> length (df)
[1] 30
> length (df[[1]])
[1] 2
< script type = "text/javascript" src = "js/jquery-1.6.4.min.js" > < / script >
< script type = "text/javascript" >
function checkSelectedAtleastOne(clsName) {
if (selectedValue == "select")
return false;
var i = 0;
$("." + clsName).each(function () {
if ($(this).is(':checked')) {
i = 1;
}
});
if (i == 0) {
alert("Please select atleast one users");
return false;
} else if (i == 1) {
return true;
}
return true;
}
$(document).ready(function () {
$('#chkSearchAll').click(function () {
var checked = $(this).is(':checked');
$('.clsChkSearch').each(function () {
var checkBox = $(this);
if (checked) {
checkBox.prop('checked', true);
} else {
checkBox.prop('checked', false);
}
});
});
//for select and deselect 'select all' check box when clicking individual check boxes
$(".clsChkSearch").click(function () {
var i = 0;
$(".clsChkSearch").each(function () {
if ($(this).is(':checked')) {}
else {
i = 1; //unchecked
}
});
if (i == 0) {
$("#chkSearchAll").attr("checked", true)
} else if (i == 1) {
$("#chkSearchAll").attr("checked", false)
}
});
});
< / script >
If possible restart the services MSSQLSERVER and SQLSERVERAGENT.
I managed it by doing the following:
Create the requirements file called reqs.txt with currently installed packages list
pip freeze > reqs.txt
then uninstall all the packages from reqs.txt
pip uninstall \
-y # remove the package with prompting for confirmation
-r reqs.txt
I like this method as you always have a pip requirements file to fall back on should you make a mistake. It's also repeatable.
Highlight a single null character, goto find replace - it usually automatically inserts the highlighted text into the find box. Enter a space into or leave blank the replace box.
I fixed it by re-adding the key to my ssh-agent.
with the following command:
ssh-add ~/.ssh/path_to_private_key_you_generated
For some reasons it was gone.
Unlike other answers, the UrlSearchParams
object can avoid using Regexes or other string manipulation and is available is most modern browsers:
var queryString = location.search
let params = new URLSearchParams(queryString)
// example of retrieving 'id' parameter
let id = parseInt(params.get("id"))
console.log(id)
Pandas uses numpy
's NaN value. Use numpy.isnan
to obtain a Boolean vector from a pandas series.
$files = glob($_SERVER["DOCUMENT_ROOT"]."/myFolder/*");
Any changes to the rendering should be change via the state
or props
(react doc).
So here I register the event of the input, and then change the state
, which will then trigger the render to show on the footer.
var SearchResult = React.createClass({
getInitialState: function () {
return {
site: '',
address: ''
};
},
onSiteChanged: function (e) {
this.setState({
site: e.currentTarget.value
});
},
onAddressChanged: function (e) {
this.setState({
address: e.currentTarget.value
});
},
render: function(){
var resultRows = this.props.data.map(function(result){
return (
<tbody>
<tr>
<td><input type="radio" name="site_name"
value={result.SITE_NAME}
checked={this.state.site === result.SITE_NAME}
onChange={this.onSiteChanged} />{result.SITE_NAME}</td>
<td><input type="radio" name="address"
value={result.ADDRESS}
checked={this.state.address === result.ADDRESS}
onChange={this.onAddressChanged} />{result.ADDRESS}</td>
</tr>
</tbody>
);
}, this);
return (
<table className="table">
<thead>
<tr>
<th>Name</th>
<th>Address</th>
</tr>
</thead>
{resultRows}
<tfoot>
<tr>
<td>chosen site name {this.state.site} </td>
<td>chosen address {this.state.address} </td>
</tr>
</tfoot>
</table>
);
}
});
This works for me
public virtual ActionResult LogOff()
{
FormsAuthentication.SignOut();
foreach (var cookie in Request.Cookies.AllKeys)
{
Request.Cookies.Remove(cookie);
}
foreach (var cookie in Response.Cookies.AllKeys)
{
Response.Cookies.Remove(cookie);
}
return RedirectToAction(MVC.Home.Index());
}
There is a new feature called Interpreter in status bar (scroll down a little bit). This makes switching between python interpreters and seeing which version you’re using easier.
In case you cannot see the status bar, you can easily activate it by running the Find Action command (Ctrl+Shift+A or ?+ ?+A on mac). Then type status bar and choose View: Status Bar to see it.
the best way is:
let methods = Object.getOwnPropertyNames(yourobject);
console.log(methods)
use 'let' only in es6, use 'var' instead
Only this is necessary
session_start();
unset($_SESSION["nome"]); // where $_SESSION["nome"] is your own variable. if you do not have one use only this as follow **session_unset();**
header("Location: home.php");
numpy.array
is just a convenience function to create an ndarray
; it is not a class itself.
You can also create an array using numpy.ndarray
, but it is not the recommended way. From the docstring of numpy.ndarray
:
Arrays should be constructed using
array
,zeros
orempty
... The parameters given here refer to a low-level method (ndarray(...)
) for instantiating an array.
Most of the meat of the implementation is in C code, here in multiarray, but you can start looking at the ndarray interfaces here:
https://github.com/numpy/numpy/blob/master/numpy/core/numeric.py
In python 3 you can use os.scandir():
for i in os.scandir(path):
if i.is_file():
print('File: ' + i.path)
elif i.is_dir():
print('Folder: ' + i.path)
Just go to https://github.com/new/import .
In the section "Your old repository's clone URL" paste the repo URL you want and in "Privacy" select Private
.
For a super succinct with jQuery approach try:
<div onclick="$(this).toggleClass('newclass')">click me</div>
Or pure JS:
<div onclick="this.classList.toggle('newclass');">click me</div>
To avoid the interactive questions by adduser, you can call it with these parameters:
RUN adduser --disabled-password --gecos '' newuser
The --gecos
parameter is used to set the additional information. In this case it is just empty.
On systems with busybox (like Alpine), use
RUN adduser -D -g '' newuser
See busybox adduser
I have explained use of various CURL options required for CURL PROXY.
$url = 'http://dynupdate.no-ip.com/ip.php';
$proxy = '127.0.0.1:8888';
$proxyauth = 'user:password';
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url); // URL for CURL call
curl_setopt($ch, CURLOPT_PROXY, $proxy); // PROXY details with port
curl_setopt($ch, CURLOPT_PROXYUSERPWD, $proxyauth); // Use if proxy have username and password
curl_setopt($ch, CURLOPT_PROXYTYPE, CURLPROXY_SOCKS5); // If expected to call with specific PROXY type
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1); // If url has redirects then go to the final redirected URL.
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 0); // Do not outputting it out directly on screen.
curl_setopt($ch, CURLOPT_HEADER, 1); // If you want Header information of response else make 0
$curl_scraped_page = curl_exec($ch);
curl_close($ch);
echo $curl_scraped_page;
$("#myform input:checkbox").change(function() {
$("#myform input:checkbox").attr("checked", false);
$(this).attr("checked", true);
});
This should work for any number of checkboxes in the form. If you have others that aren't part of the group, set up the selectors the applicable inputs.
if you have Firebug installed on Firefox, just open the url. In the network panel, right-click and select Copy as cURL. You can see all curl parameters for this web call.
I use the following code to write files on my web directory.
write_file.html
<form action="file.php"method="post">
<textarea name="code">Code goes here</textarea>
<input type="submit"value="submit">
</form>
write_file.php
<?php
// strip slashes before putting the form data into target file
$cd = stripslashes($_POST['code']);
// Show the msg, if the code string is empty
if (empty($cd))
echo "Nothing to write";
// if the code string is not empty then open the target file and put form data in it
else
{
$file = fopen("demo.php", "w");
echo fwrite($file, $cd);
// show a success msg
echo "data successfully entered";
fclose($file);
}
?>
This is a working script. be sure to change the url in form action and the target file in fopen() function if you want to use it on your site.
Good luck.
For example, like this:
const querystring = require('querystring');
const https = require('https');
var postData = querystring.stringify({
'msg' : 'Hello World!'
});
var options = {
hostname: 'posttestserver.com',
port: 443,
path: '/post.php',
method: 'POST',
headers: {
'Content-Type': 'application/x-www-form-urlencoded',
'Content-Length': postData.length
}
};
var req = https.request(options, (res) => {
console.log('statusCode:', res.statusCode);
console.log('headers:', res.headers);
res.on('data', (d) => {
process.stdout.write(d);
});
});
req.on('error', (e) => {
console.error(e);
});
req.write(postData);
req.end();
Pls, check if DataGridComboBoxColumn xaml below would work for you:
<DataGridComboBoxColumn
SelectedValueBinding="{Binding CompanyID}"
DisplayMemberPath="Name"
SelectedValuePath="ID">
<DataGridComboBoxColumn.ElementStyle>
<Style TargetType="{x:Type ComboBox}">
<Setter Property="ItemsSource" Value="{Binding Path=DataContext.CompanyItems, RelativeSource={RelativeSource AncestorType={x:Type Window}}}" />
</Style>
</DataGridComboBoxColumn.ElementStyle>
<DataGridComboBoxColumn.EditingElementStyle>
<Style TargetType="{x:Type ComboBox}">
<Setter Property="ItemsSource" Value="{Binding Path=DataContext.CompanyItems, RelativeSource={RelativeSource AncestorType={x:Type Window}}}" />
</Style>
</DataGridComboBoxColumn.EditingElementStyle>
</DataGridComboBoxColumn>
Here you can find another solution for the problem you're facing: Using combo boxes with the WPF DataGrid
Your property file location is classpath:idm.properties
This is rather unusual, it means that idm.properties
must be located either at the top level of WEB-INF/classes
or at the top-level of one of the jars inside WEB-INF/lib
. Usually it's good practice to either use a dedicated folder for properties or keep them close to the context files that use them.
So my suggestion is this: Is your properties file perhaps next to your context file? If so, it's not on the classpath (see this question: Is WEB-INF in the CLASSPATH?).
The classpath:
prefix maps to a ClassPathResource
, but you probably need a ServletContextResource
, and you'll get that from a WebApplicationContext
using the syntax without prefix:
<context:property-placeholder location="idm.properties" />
Reference:
ResourceLoader
ApplicationContext
types handle resources without prefix)PropertyPlaceholderConfigurer
mechanism<context:property-placeholder>
mechanism)For Scalar Function Syntax is
Select dbo.Function_Name(parameter_name)
Select dbo.Department_Employee_Count('HR')
Well, I'm sure that you didn't set the models yet, so what dose it migrate now ??
So the solution is setting all variables and set Charfield, Textfield....... and migrate them and it will work.
Server side encoding files/Images to base64String ready for client side consumption
public Optional<String> InputStreamToBase64(Optional<InputStream> inputStream) throws IOException{
if (inputStream.isPresent()) {
ByteArrayOutputStream output = new ByteArrayOutputStream();
FileCopyUtils.copy(inputStream.get(), output);
//TODO retrieve content type from file, & replace png below with it
return Optional.ofNullable("data:image/png;base64," + DatatypeConverter.printBase64Binary(output.toByteArray()));
}
return Optional.empty();
}
Server side base64 Image/File decoder
public Optional<InputStream> Base64InputStream(Optional<String> base64String)throws IOException {
if (base64String.isPresent()) {
return Optional.ofNullable(new ByteArrayInputStream(DatatypeConverter.parseBase64Binary(base64String.get())));
}
return Optional.empty();
}
Set your environmental variable Path
to point to where the adb
application is at: [directory of sdk folder]\platform-tools
process.hrtime() not give current ts.
This should work.
const loadNs = process.hrtime(),
loadMs = new Date().getTime(),
diffNs = process.hrtime(loadNs),
microSeconds = (loadMs * 1e6) + (diffNs[0] * 1e9) + diffNs[1]
console.log(microSeconds / 1e3)
Generally, placement new is used to get rid of allocation cost of a 'normal new'.
Another scenario where I used it is a place where I wanted to have access to the pointer to an object that was still to be constructed, to implement a per-document singleton.
out
or ref
(since that changes the reference, not the object). A programmer therefore knows that if string x = "abc"
at the start of a method, and that doesn't change in the body of the method, then x == "abc"
at the end of the method."abc" == "ab" + "c"
. While this doesn't require immutability, the fact that a reference to such a string will always equal "abc" throughout its lifetime (which does require immutability) makes uses as keys where maintaining equality to previous values is vital, much easier to ensure correctness of (strings are indeed commonly used as keys).Christmas.AddMonths(1)
produces a new DateTime
rather than changing a mutable one. (Another example, if I as a mutable object change my name, what has changed is which name I am using, "Jon" remains immutable and other Jons will be unaffected.return this
. Since the copy can't be changed anyway, pretending something is its own copy is safe.In all, for objects which don't have undergoing change as part of their purpose, there can be many advantages in being immutable. The main disadvantage is in requiring extra constructions, though even here it's often overstated (remember, you have to do several appends before StringBuilder becomes more efficient than the equivalent series of concatenations, with their inherent construction).
It would be a disadvantage if mutability was part of the purpose of an object (who'd want to be modeled by an Employee object whose salary could never ever change) though sometimes even then it can be useful (in a many web and other stateless applications, code doing read operations is separate from that doing updates, and using different objects may be natural - I wouldn't make an object immutable and then force that pattern, but if I already had that pattern I might make my "read" objects immutable for the performance and correctness-guarantee gain).
Copy-on-write is a middle ground. Here the "real" class holds a reference to a "state" class. State classes are shared on copy operations, but if you change the state, a new copy of the state class is created. This is more often used with C++ than C#, which is why it's std:string enjoys some, but not all, of the advantages of immutable types, while remaining mutable.
#wrapper {_x000D_
margin-right: 50%;_x000D_
}_x000D_
#content {_x000D_
float: left;_x000D_
width: 50%;_x000D_
background-color: #CCF;_x000D_
}_x000D_
#sidebar {_x000D_
float: right;_x000D_
width: 200px;_x000D_
margin-right: -200px;_x000D_
background-color: #FFA;_x000D_
}_x000D_
#cleared {_x000D_
clear: both;_x000D_
}
_x000D_
<div id="wrapper">_x000D_
<div id="content">Column 1 (fluid)</div>_x000D_
<div id="sidebar">Column 2 (fixed)</div>_x000D_
<div id="cleared"></div>_x000D_
</div>
_x000D_
Timer for jQuery - smaller, working, tested.
var sec = 0;_x000D_
function pad ( val ) { return val > 9 ? val : "0" + val; }_x000D_
setInterval( function(){_x000D_
$("#seconds").html(pad(++sec%60));_x000D_
$("#minutes").html(pad(parseInt(sec/60,10)));_x000D_
}, 1000);
_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>_x000D_
<span id="minutes"></span>:<span id="seconds"></span>
_x000D_
Pure JavaScript:
var sec = 0;_x000D_
function pad ( val ) { return val > 9 ? val : "0" + val; }_x000D_
setInterval( function(){_x000D_
document.getElementById("seconds").innerHTML=pad(++sec%60);_x000D_
document.getElementById("minutes").innerHTML=pad(parseInt(sec/60,10));_x000D_
}, 1000);
_x000D_
<span id="minutes"></span>:<span id="seconds"></span>
_x000D_
Update:
This answer shows how to pad.
Stopping setInterval MDN is achieved with clearInterval MDN
var timer = setInterval ( function(){...}, 1000 );
...
clearInterval ( timer );
A bit late to the question, but I just needed this feature as well. I agree with DavidK that since there is a built-in API function that provides this, you should use it. Here's a managed wrapper for it:
public static string GetRelativePath(string fromPath, string toPath)
{
int fromAttr = GetPathAttribute(fromPath);
int toAttr = GetPathAttribute(toPath);
StringBuilder path = new StringBuilder(260); // MAX_PATH
if(PathRelativePathTo(
path,
fromPath,
fromAttr,
toPath,
toAttr) == 0)
{
throw new ArgumentException("Paths must have a common prefix");
}
return path.ToString();
}
private static int GetPathAttribute(string path)
{
DirectoryInfo di = new DirectoryInfo(path);
if (di.Exists)
{
return FILE_ATTRIBUTE_DIRECTORY;
}
FileInfo fi = new FileInfo(path);
if(fi.Exists)
{
return FILE_ATTRIBUTE_NORMAL;
}
throw new FileNotFoundException();
}
private const int FILE_ATTRIBUTE_DIRECTORY = 0x10;
private const int FILE_ATTRIBUTE_NORMAL = 0x80;
[DllImport("shlwapi.dll", SetLastError = true)]
private static extern int PathRelativePathTo(StringBuilder pszPath,
string pszFrom, int dwAttrFrom, string pszTo, int dwAttrTo);
public class InShotApp extends Application {
@Override
public void onCreate() {
super.onCreate();
registerActivityLifecycle();
}
private void registerActivityLifecycle() {
registerActivityLifecycleCallbacks(new ActivityLifecycleCallbacks() {
@Override
public void onActivityCreated(@NonNull Activity activity, @Nullable Bundle savedInstanceState) {
activity.getWindow().setFlags(WindowManager.LayoutParams.FLAG_SECURE, WindowManager.LayoutParams.FLAG_SECURE); }
@Override
public void onActivityStarted(@NonNull Activity activity) {
}
@Override
public void onActivityResumed(@NonNull Activity activity) {
}
@Override
public void onActivityPaused(@NonNull Activity activity) {
}
@Override
public void onActivityStopped(@NonNull Activity activity) {
}
@Override
public void onActivitySaveInstanceState(@NonNull Activity activity, @NonNull Bundle outState) {
}
@Override
public void onActivityDestroyed(@NonNull Activity activity) {
}
});
}
}
here's a nice solution for putting a rotated drawable for an imageView:
Drawable getRotateDrawable(final Bitmap b, final float angle) {
final BitmapDrawable drawable = new BitmapDrawable(getResources(), b) {
@Override
public void draw(final Canvas canvas) {
canvas.save();
canvas.rotate(angle, b.getWidth() / 2, b.getHeight() / 2);
super.draw(canvas);
canvas.restore();
}
};
return drawable;
}
usage:
Bitmap b=...
float angle=...
final Drawable rotatedDrawable = getRotateDrawable(b,angle);
root.setImageDrawable(rotatedDrawable);
another alternative:
private Drawable getRotateDrawable(final Drawable d, final float angle) {
final Drawable[] arD = { d };
return new LayerDrawable(arD) {
@Override
public void draw(final Canvas canvas) {
canvas.save();
canvas.rotate(angle, d.getBounds().width() / 2, d.getBounds().height() / 2);
super.draw(canvas);
canvas.restore();
}
};
}
also, if you wish to rotate the bitmap, but afraid of OOM, you can use an NDK solution i've made here
int rgb = ((r&0x0ff)<<16)|((g&0x0ff)<<8)|(b&0x0ff);
If you know that your r, g, and b values are never > 255 or < 0 you don't need the &0x0ff
Additionaly
int red = (rgb>>16)&0x0ff;
int green=(rgb>>8) &0x0ff;
int blue= (rgb) &0x0ff;
No need for multipling.
In Python 3.8+ you can use .read()
in a while
loop:
with open("somefile.txt") as f:
while chunk := f.read(8192):
do_something(chunk)
Of course, you can use any chunk size you want, you don't have to use 8192
(2**13
) bytes. Unless your file's size happens to be a multiple of your chunk size, the last chunk will be smaller than your chunk size.
Actually, you do not need to do a first guess. Simply doing
import matplotlib.pyplot as plt
from scipy.optimize import curve_fit
from scipy import asarray as ar,exp
x = ar(range(10))
y = ar([0,1,2,3,4,5,4,3,2,1])
n = len(x) #the number of data
mean = sum(x*y)/n #note this correction
sigma = sum(y*(x-mean)**2)/n #note this correction
def gaus(x,a,x0,sigma):
return a*exp(-(x-x0)**2/(2*sigma**2))
popt,pcov = curve_fit(gaus,x,y)
#popt,pcov = curve_fit(gaus,x,y,p0=[1,mean,sigma])
plt.plot(x,y,'b+:',label='data')
plt.plot(x,gaus(x,*popt),'ro:',label='fit')
plt.legend()
plt.title('Fig. 3 - Fit for Time Constant')
plt.xlabel('Time (s)')
plt.ylabel('Voltage (V)')
plt.show()
works fine. This is simpler because making a guess is not trivial. I had more complex data and did not manage to do a proper first guess, but simply removing the first guess worked fine :)
P.S.: use numpy.exp() better, says a warning of scipy
For all the pythonian zealots out there I'm sure Johan Cleeze would approve of your dogmatism ;). I'm leaving this answer keep demeriting it It actually makes me more confidant. Leave a comment you chickens!
For python 3.6
class SomeClass:
def attr_list1(self, should_print=False):
for k in self.__dict__.keys():
v = self.__dict__.__getitem__(k)
if should_print:
print(f"attr: {k} value: {v}")
def attr_list(self, should_print=False):
b = [(k, v) for k, v in self.__dict__.items()]
if should_print:
[print(f"attr: {a[0]} value: {a[1]}") for a in b]
return b
Without a bit of information about what files are in your repository (pure source code, images, executables, ...), it's a bit hard to answer the question :)
Beside this, I'll consider that you're willing to default to LF as line endings in your working directory because you're willing to make sure that text files have LF line endings in your .git repository wether you work on Windows or Linux. Indeed better safe than sorry....
However, there's a better alternative: Benefit from LF line endings in your Linux workdir, CRLF line endings in your Windows workdir AND LF line endings in your repository.
As you're partially working on Linux and Windows, make sure core.eol
is set to native
and core.autocrlf
is set to true
.
Then, replace the content of your .gitattributes
file with the following
* text=auto
This will let Git handle the automagic line endings conversion for you, on commits and checkouts. Binary files won't be altered, files detected as being text files will see the line endings converted on the fly.
However, as you know the content of your repository, you may give Git a hand and help him detect text files from binary files.
Provided you work on a C based image processing project, replace the content of your .gitattributes
file with the following
* text=auto
*.txt text
*.c text
*.h text
*.jpg binary
This will make sure files which extension is c, h, or txt will be stored with LF line endings in your repo and will have native line endings in the working directory. Jpeg files won't be touched. All of the others will be benefit from the same automagic filtering as seen above.
In order to get a get a deeper understanding of the inner details of all this, I'd suggest you to dive into this very good post "Mind the end of your line" from Tim Clem, a Githubber.
As a real world example, you can also peek at this commit where those changes to a .gitattributes
file are demonstrated.
UPDATE to the answer considering the following comment
I actually don't want CRLF in my Windows directories, because my Linux environment is actually a VirtualBox sharing the Windows directory
Makes sense. Thanks for the clarification. In this specific context, the .gitattributes
file by itself won't be enough.
Run the following commands against your repository
$ git config core.eol lf
$ git config core.autocrlf input
As your repository is shared between your Linux and Windows environment, this will update the local config file for both environment. core.eol
will make sure text files bear LF line endings on checkouts. core.autocrlf
will ensure potential CRLF in text files (resulting from a copy/paste operation for instance) will be converted to LF in your repository.
Optionally, you can help Git distinguish what is a text file by creating a .gitattributes
file containing something similar to the following:
# Autodetect text files
* text=auto
# ...Unless the name matches the following
# overriding patterns
# Definitively text files
*.txt text
*.c text
*.h text
# Ensure those won't be messed up with
*.jpg binary
*.data binary
If you decided to create a .gitattributes
file, commit it.
Lastly, ensure git status
mentions "nothing to commit (working directory clean)", then perform the following operation
$ git checkout-index --force --all
This will recreate your files in your working directory, taking into account your config changes and the .gitattributes
file and replacing any potential overlooked CRLF in your text files.
Once this is done, every text file in your working directory WILL bear LF line endings and git status
should still consider the workdir as clean.
What you want is called a pivot, and it's not directly supported in MySQL, check this answer out for the options you've got:
Instead of the modulo operator, which has slightly different semantics, for non-negative integers, you can use the remainder operator %
. For your exact example:
if ((a % 2) == 0)
{
isEven = true;
}
else
{
isEven = false;
}
This can be simplified to a one-liner:
isEven = (a % 2) == 0;
If your xml is in a string use the following to remove any byte order mark:
xml = new Regex("\\<\\?xml.*\\?>").Replace(xml, "");
Use Linq, it is a very quick and easy way.
string mystring = "0, 10, 20, 30, 100, 200";
var query = from val in mystring.Split(',')
select int.Parse(val);
foreach (int num in query)
{
Console.WriteLine(num);
}
UITextField
is specifically one-line only.
Your Google search is correct, you need to use UITextView
instead of UITextField
for display and editing of multiline text.
In Interface Builder, add a UITextView
where you want it and select the "editable" box. It will be multiline by default.
Guava had Files.deleteRecursively(File)
supported until Guava 9.
From Guava 10:
Deprecated. This method suffers from poor symlink detection and race conditions. This functionality can be supported suitably only by shelling out to an operating system command such as
rm -rf
ordel /s
. This method is scheduled to be removed from Guava in Guava release 11.0.
Therefore, there is no such method in Guava 11.
I had the same trouble with Vagrant 1.6.5 and Virtual Box 4.3.16. The solution described at https://github.com/mitchellh/vagrant/issues/4470 worked fine for me, I just had to remove VirtualBox 4.3.16 and install the older version 4.3.12.
If you want to make a diff with more than one file, with the method specified by @mipadi:
E.g. diff between HEAD
and your master
, to find all .coffee
files:
git diff master..HEAD -- `find your_search_folder/ -name '*.coffee'`
This will recursively search your your_search_folder/
for all .coffee
files and make a diff between them and their master
versions.
I also ran into this issue - I was trying to pull in an object from a source and it was working in the test code but not the src code. To further test, I copied a block of code from the test and dropped it into the src code, then immediately removed the JUnit lines so I just had how the test was pulling in the object. Then suddenly my code wouldn't compile.
The issue was that when I dropped the code in, Eclipse helpfully resolved all the classes so I had JUnit calls coming from my src code, which was not proper. I should have noticed the warnings at the top about unused imports, but I neglected to see them.
Once I removed the unused JUnit imports in my src file, it all worked beautifully.
You could also write your own IFormatProvider, though I suppose eventually you'd have to think of a way to do the actual truncation.
The .NET Framework also supports custom formatting. This typically involves the creation of a formatting class that implements both IFormatProvider and ICustomFormatter. (msdn)
At least it would be easily reusable.
There is an article about how to implement your own IFormatProvider/ICustomFormatter here at CodeProject. In this case, "extending" an existing numeric format might be the best bet. It doesn't look too hard.
This may work:
nvm install NEW_VERSION --reinstall-packages-from=OLD_VERSION
For example:
nvm install 6.7 --reinstall-packages-from=6.4
then, if you want, you can delete your previous version with:
nvm uninstall OLD_VERSION
Where, in your case, NEW_VERSION = 5.4 OLD_VERSION = 5.0
Alternatively, try:
nvm install stable --reinstall-packages-from=current
If you want search for printable strings, you can use:
strings -ao filename | grep string
strings will output all printable strings from a binary with offsets, and grep will search within.
If you want search for any binary string, here is your friend:
Couldn't add this as a comment, but in case anyone is interested in using the accepted answer with subplots, the divider should be formed on specific axes object (rather than on the numpy.ndarray returned from plt.subplots)
import numpy as np
import matplotlib.pyplot as plt
from mpl_toolkits.axes_grid1 import make_axes_locatable
data = np.arange(100, 0, -1).reshape(10, 10)
fig, ax = plt.subplots(ncols=2, nrows=2)
for row in ax:
for col in row:
im = col.imshow(data, cmap='bone')
divider = make_axes_locatable(col)
cax = divider.append_axes('right', size='5%', pad=0.05)
fig.colorbar(im, cax=cax, orientation='vertical')
plt.show()
You could try qemu, which is what the Android emulator uses. I believe it actually emulates the ARM hardware.
Note that Josh's solution only works for a single element.
Arguably, "outer" HTML only really makes sense when you have a single element, but there are situations where it makes sense to take a list of HTML elements and turn them into markup.
Extending Josh's solution, this one will handle multiple elements:
(function($) {
$.fn.outerHTML = function() {
var $this = $(this);
if ($this.length>1)
return $.map($this, function(el){ return $(el).outerHTML(); }).join('');
return $this.clone().wrap('<div/>').parent().html();
}
})(jQuery);
Edit: another problem with Josh's solution fixed, see comment above.
For creating session only cookie with java script, you can use the following. This works for me.
document.cookie = "cookiename=value; expires=0; path=/";
then get cookie value as following
//get cookie
var cookiename = getCookie("cookiename");
if (cookiename == "value") {
//write your script
}
//function getCookie
function getCookie(cname) {
var name = cname + "=";
var ca = document.cookie.split(';');
for (var i = 0; i < ca.length; i++) {
var c = ca[i];
while (c.charAt(0) == ' ') c = c.substring(1);
if (c.indexOf(name) != -1) return c.substring(name.length, c.length);
}
return "";
}
Okay to support IE we can leave "expires" completely and can use this
document.cookie = "mtracker=somevalue; path=/";
Post installation of postgres, in my case version is 12.2, I did run the below command createdb
.
$ createdb `whoami`
$ psql
psql (12.2)
Type "help" for help.
macuser=#
I am not a big fan of if...else; so I took a simpler approach.
$(document).ready(function(event) {
$('ul.nav.nav-tabs a:first').tab('show'); // Select first tab
$('ul.nav.nav-tabs a[href="'+ window.location.hash+ '"]').tab('show'); // Select tab by name if provided in location hash
$('ul.nav.nav-tabs a[data-toggle="tab"]').on('shown', function (event) { // Update the location hash to current tab
window.location.hash= event.target.hash;
})
});
Doesn't address scrolling to requested hash; but should it?
As a rephrasing of Andrey's answer:
The Boost TypeIndex library can be used to print names of types.
Inside a template, this might read as follows
#include <boost/type_index.hpp>
#include <iostream>
template<typename T>
void printNameOfType() {
std::cout << "Type of T: "
<< boost::typeindex::type_id<T>().pretty_name()
<< std::endl;
}
Well... I would like you to understand more specific areas of space. \t
is actually assorted as a horizontal space, not a vertical space. (test out inserting \t
in Notepad)
If you use Java, simply use \v
. See the reference below.
\h
- A horizontal whitespace character:
[\t\xA0\u1680\u180e\u2000-\u200a\u202f\u205f\u3000]
\v
- A vertical whitespace character:
[\n\x0B\f\r\x85\u2028\u2029]
But I am aware that you use .NET. So my answer to replacing every vertical space is..
string replacement = Regex.Replace(s, @"[\n\u000B\u000C\r\u0085\u2028\u2029]", "");
refer to http://www.w3schools.com/php/php_mysql_select.asp . If you are a beginner and want to learn, w3schools is a good place.
<?php
$con=mysqli_connect("localhost","root","YOUR_PHPMYADMIN_PASSWORD","hrmwaitrose");
// Check connection
if (mysqli_connect_errno())
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
$result = mysqli_query($con,"SELECT * FROM employee");
while($row = mysqli_fetch_array($result))
{
echo $row['FirstName'] . " " . $row['LastName']; //these are the fields that you have stored in your database table employee
echo "<br />";
}
mysqli_close($con);
?>
You can similarly echo
it inside your table
<?php
echo "<table>";
while($row = mysqli_fetch_array($result))
{
echo "<tr><td>" . $row['FirstName'] . "</td><td> " . $row['LastName'] . "</td></tr>"; //these are the fields that you have stored in your database table employee
}
echo "</table>";
mysqli_close($con);
?>
Here's an example of how to do it using Boost's transform_iterator
#include <iostream>
#include <map>
#include <iterator>
#include "boost/iterator/transform_iterator.hpp"
using std::map;
typedef std::string Key;
typedef std::string Val;
map<Key,Val>::key_type get_key(map<Key,Val>::value_type aPair) {
return aPair.first;
}
typedef map<Key,Val>::key_type (*get_key_t)(map<Key,Val>::value_type);
typedef map<Key,Val>::iterator map_iterator;
typedef boost::transform_iterator<get_key_t, map_iterator> mapkey_iterator;
int main() {
map<Key,Val> m;
m["a"]="A";
m["b"]="B";
m["c"]="C";
// iterate over the map's (key,val) pairs as usual
for(map_iterator i = m.begin(); i != m.end(); i++) {
std::cout << i->first << " " << i->second << std::endl;
}
// iterate over the keys using the transformed iterators
mapkey_iterator keybegin(m.begin(), get_key);
mapkey_iterator keyend(m.end(), get_key);
for(mapkey_iterator i = keybegin; i != keyend; i++) {
std::cout << *i << std::endl;
}
}
Using only Javas own API:
String[] join(String[]... arrays) {
// calculate size of target array
int size = 0;
for (String[] array : arrays) {
size += array.length;
}
// create list of appropriate size
java.util.List list = new java.util.ArrayList(size);
// add arrays
for (String[] array : arrays) {
list.addAll(java.util.Arrays.asList(array));
}
// create and return final array
return list.toArray(new String[size]);
}
Now, this code ist not the most efficient, but it relies only on standard java classes and is easy to understand. It works for any number of String[] (even zero arrays).
I found an event OnError
in confluent Kafka:
consumer.OnError += Consumer_OnError;
private void Consumer_OnError(object sender, Error e)
{
Debug.Log("connection error: "+ e.Reason);
ConsumerConnectionError(e);
}
And its documentation in code:
//
// Summary:
// Raised on critical errors, e.g. connection failures or all brokers down. Note
// that the client will try to automatically recover from errors - these errors
// should be seen as informational rather than catastrophic
//
// Remarks:
// Executes on the same thread as every other Consumer event handler (except OnLog
// which may be called from an arbitrary thread).
public event EventHandler<Error> OnError;
You can use this code to retrieve values from multiple select combo box
HTML:
<form action="c3.php" method="post">
<select name="ary[]" multiple="multiple">
<option value="Option 1" >Option 1</option>
<option value="Option 2">Option 2</option>
<option value="Option 3">Option 3</option>
<option value="Option 4">Option 4</option>
<option value="Option 5">Option 5</option>
</select>
<input type="submit">
</form>
PHP:
<?php
$values = $_POST['ary'];
foreach ($values as $a){
echo $a;
}
?>
The list()
function [docs] will convert a string into a list of single-character strings.
>>> list('hello')
['h', 'e', 'l', 'l', 'o']
Even without converting them to lists, strings already behave like lists in several ways. For example, you can access individual characters (as single-character strings) using brackets:
>>> s = "hello"
>>> s[1]
'e'
>>> s[4]
'o'
You can also loop over the characters in the string as you can loop over the elements of a list:
>>> for c in 'hello':
... print c + c,
...
hh ee ll ll oo
Beautiful! Your solution was 99%... instead of "this.scrollY", I used "$(window).scrollTop()". What's even better is that this solution only requires the jQuery1.2.6 library (no additional libraries needed).
The reason I wanted that version in particular is because that's what ships with MVC currently.
Here's the code:
$(document).ready(function() {
$("#topBar").css("position", "absolute");
});
$(window).scroll(function() {
$("#topBar").css("top", $(window).scrollTop() + "px");
});
You could create two separate stylesheets and include one of them based on the comparison result
In one of the you can put
background-position : 150px 8px;
In the other one
background-position : 4px 8px;
I think that the only check you can perform in CSS is browser recognition:
Some of the previous answers explain how to make the divs the same height, but the problem is that when the width is too narrow the divs won't stack, therefore you can implement their answers with one extra part. For each one you can use the CSS name given here in addition to the row class that you use, so the div should look like this if you always want the divs to be next to each other:
<div class="row row-eq-height-xs">Your Content Here</div>
For all screens:
.row-eq-height-xs {
display: -webkit-box;
display: -webkit-flex;
display: -ms-flexbox;
display: flex;
flex-direction: row;
}
For when you want to use sm:
.row-eq-height-sm {
display: -webkit-box;
display: -webkit-flex;
display: -ms-flexbox;
display: flex;
flex-direction: column;
}
@media (min-width:768px) {
.row-eq-height-sm {
flex-direction: row;
}
}
For when you want to md:
.row-eq-height-md {
display: -webkit-box;
display: -webkit-flex;
display: -ms-flexbox;
display: flex;
flex-direction: column;
}
@media (min-width:992px) {
.row-eq-height-md {
flex-direction: row;
}
}
For when you want to use lg:
.row-eq-height-lg {
display: -webkit-box;
display: -webkit-flex;
display: -ms-flexbox;
display: flex;
flex-direction: column;
}
@media (min-width:1200px) {
.row-eq-height-md {
flex-direction: row;
}
}
EDIT
Based on a comment, there is indeed a simpler solution, but you need to make sure to give column info from the largest desired width for all sizes down to xs (e.g. <div class="col-md-3 col-sm-4 col-xs-12">
:
.row-eq-height {
display: -webkit-box;
display: -webkit-flex;
display: -ms-flexbox;
display: flex;
flex-direction: row;
flex-wrap: wrap;
}
YUI just recently added a utility specifically for this. See stylesheet.js here.
if (StringA.ToUpperInvariant() == StringB.ToUpperInvariant()) {
People report ToUpperInvariant() is faster than ToLowerInvariant().
A wild card would work nicely for this, although to be safe it would be best to make the use of the wild card as minimal as possible, so something along the lines of this:
rm -rf abc.log.2012-*
Although from the looks of it, are those just single files? The recursive option should not be necessary if none of those items are directories, so best to not use that, just for safety.
An update to @Brandon's answer, generalized to a method
- (NSString*) postToUrl:(NSString*)urlString data:(NSData*)dataToSend withFilename:(NSString*)filename
{
NSMutableURLRequest *request= [[NSMutableURLRequest alloc] init];
[request setURL:[NSURL URLWithString:urlString]];
[request setHTTPMethod:@"POST"];
NSString *boundary = @"---------------------------14737809831466499882746641449";
NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@", boundary];
[request addValue:contentType forHTTPHeaderField: @"Content-Type"];
NSMutableData *postbody = [NSMutableData data];
[postbody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[postbody appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"userfile\"; filename=\"%@\"\r\n", filename] dataUsingEncoding:NSUTF8StringEncoding]];
[postbody appendData:[@"Content-Type: application/octet-stream\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
[postbody appendData:[NSData dataWithData:dataToSend]];
[postbody appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[request setHTTPBody:postbody];
NSError* error;
NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:&error];
if (returnData) {
return [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding];
}
else {
return nil;
}
}
Invoke like so, sending data from a string:
[self postToUrl:@"<#Your url string#>"
data:[@"<#Your string to send#>" dataUsingEncoding:NSUTF8StringEncoding]
withFilename:@"<#Filename to post with#>"];
Personally I use the method of calling unregisterReceiver and swallowing the exception if it's thrown. I agree this is ugly but the best method currently provided.
I've raised a feature request to get a boolean method to check if a receiver is registered added to the Android API. Please support it here if you want to see it added: https://code.google.com/p/android/issues/detail?id=73718
Per the documentation:
os.listdir(path)
Return a list containing the names of the entries in the directory given by path. The list is in arbitrary order. It does not include the special entries '.' and '..' even if they are present in the directory.
Order cannot be relied upon and is an artifact of the filesystem.
To sort the result, use sorted(os.listdir(path))
.
I had the same problem, with a RESTful API running on aspnet core.
I didn't want to uninstall the WebDAV, and I tried most of the remedies described above. I tried to set the verbs="*" both on the site and on the server itself, but without success.
What did the trick for me was the following:
IIS Manager -> Sites -> MySite -> HandlerMappings -> aspNetCore -> Edit
-> Request Restrictions -> Access -> None (it was Script).
After that everything worked, even if I replaced the original WebDAV options.
In Expression Language you can just use the ==
or eq
operator to compare object values. Behind the scenes they will actually use the Object#equals()
. This way is done so, because until with the current EL 2.1 version you cannot invoke methods with other signatures than standard getter (and setter) methods (in the upcoming EL 2.2 it would be possible).
So the particular line
<c:when test="${lang}.equals(${pageLang})">
should be written as (note that the whole expression is inside the {
and }
)
<c:when test="${lang == pageLang}">
or, equivalently
<c:when test="${lang eq pageLang}">
Both are behind the scenes roughly interpreted as
jspContext.findAttribute("lang").equals(jspContext.findAttribute("pageLang"))
If you want to compare constant String
values, then you need to quote it
<c:when test="${lang == 'en'}">
or, equivalently
<c:when test="${lang eq 'en'}">
which is behind the scenes roughly interpreted as
jspContext.findAttribute("lang").equals("en")
If your modulus is prime (you call it p
) then you may simply compute:
y = x**(p-2) mod p # Pseudocode
Or in Python proper:
y = pow(x, p-2, p)
Here is someone who has implemented some number theory capabilities in Python: http://www.math.umbc.edu/~campbell/Computers/Python/numbthy.html
Here is an example done at the prompt:
m = 1000000007
x = 1234567
y = pow(x,m-2,m)
y
989145189L
x*y
1221166008548163L
x*y % m
1L
Please check if your code doesnt consist of two module projects that have the same classes names and packages definition. For example this could happen if someone uses copy-paste to create new implementation of interface based on previous implementation.
I use the following method in my project
-(NSArray*)networkErrorCodes
{
static NSArray *codesArray;
if (![codesArray count]){
@synchronized(self){
const int codes[] = {
//kCFURLErrorUnknown, //-998
//kCFURLErrorCancelled, //-999
//kCFURLErrorBadURL, //-1000
//kCFURLErrorTimedOut, //-1001
//kCFURLErrorUnsupportedURL, //-1002
//kCFURLErrorCannotFindHost, //-1003
kCFURLErrorCannotConnectToHost, //-1004
kCFURLErrorNetworkConnectionLost, //-1005
kCFURLErrorDNSLookupFailed, //-1006
//kCFURLErrorHTTPTooManyRedirects, //-1007
kCFURLErrorResourceUnavailable, //-1008
kCFURLErrorNotConnectedToInternet, //-1009
//kCFURLErrorRedirectToNonExistentLocation, //-1010
kCFURLErrorBadServerResponse, //-1011
//kCFURLErrorUserCancelledAuthentication, //-1012
//kCFURLErrorUserAuthenticationRequired, //-1013
//kCFURLErrorZeroByteResource, //-1014
//kCFURLErrorCannotDecodeRawData, //-1015
//kCFURLErrorCannotDecodeContentData, //-1016
//kCFURLErrorCannotParseResponse, //-1017
kCFURLErrorInternationalRoamingOff, //-1018
kCFURLErrorCallIsActive, //-1019
//kCFURLErrorDataNotAllowed, //-1020
//kCFURLErrorRequestBodyStreamExhausted, //-1021
kCFURLErrorFileDoesNotExist, //-1100
//kCFURLErrorFileIsDirectory, //-1101
kCFURLErrorNoPermissionsToReadFile, //-1102
//kCFURLErrorDataLengthExceedsMaximum, //-1103
};
int size = sizeof(codes)/sizeof(int);
NSMutableArray *array = [[NSMutableArray alloc] init];
for (int i=0;i<size;++i){
[array addObject:[NSNumber numberWithInt:codes[i]]];
}
codesArray = [array copy];
}
}
return codesArray;
}
Then I just check the error code and show alert if it is in the list
if ([[self networkErrorCodes] containsObject:[NSNumber
numberWithInt:[error code]]]){
// Fire Alert View Here
}
But as you can see I commented out codes that I think does not fit to my definition of NO INTERNET. E.g the code of -1012 (Authentication fail.) You may edit the list as you like.
In my project I use it at username/password entering from user. And in my view (physical) network connection errors could be the only reason to show alert view in your network based app. In any other case (e.g. incorrect username/password pair) I prefer to do some custom user friendly animation, OR just repeat the failed attempt again without any attention of the user. Especially if the user didn't explicitly initiated a network call.
Regards to martinezdelariva for a link to documentation.
You can use tmux
or screen
(second is able to do only horizontal splits without a patch) to split your terminal. But I do not know the way to have one instance of Vim in both panes.
Always use EntityFunctions.TruncateTime() for both x.DateTimeStart and currentDate. such as :
var eventsCustom = eventCustomRepository.FindAllEventsCustomByUniqueStudentReference(userDevice.UniqueStudentReference).Where(x => EntityFunctions.TruncateTime(x.DateTimeStart) == EntityFunctions.TruncateTime(currentDate));
[k for k,v in l if v =='delicia']
here l is the list of tuples-[(1,"juca"),(22,"james"),(53,"xuxa"),(44,"delicia")]
And instead of converting it to a dict, we are using llist comprehension.
*Key* in Key,Value in list, where value = **delicia**
First of all, both cases calls a constructor. If you write
Example *example = new Example();
then you are creating an object, call the constructor and retrieve a pointer to it.
If you write
Example example;
The only difference is that you are getting the object and not a pointer to it. The constructor called in this case is the same as above, the default (no argument) constructor.
As for the singleton question, you must simple invoke your static method by writing:
Example *e = Singleton::getExample();
REQUEST:
$.ajax({
url: "http://localhost:8079/students/add/",
type: "POST",
crossDomain: true,
data: JSON.stringify(somejson),
dataType: "json",
success: function (response) {
var resp = JSON.parse(response)
alert(resp.status);
},
error: function (xhr, status) {
alert("error");
}
});
RESPONSE:
response = HttpResponse(json.dumps('{"status" : "success"}'))
response.__setitem__("Content-type", "application/json")
response.__setitem__("Access-Control-Allow-Origin", "*")
return response
If you don't need to initiate a post back when you press this button, then making the overhead of a server control isn't necesary.
<input id="addButton" type="button" value="Add" />
<script type="text/javascript" language="javascript">
$(document).ready(function()
{
$('#addButton').click(function()
{
showDialog('#addPerson');
});
});
</script>
If you still need to be able to do a post back, you can conditionally stop the rest of the button actions with a little different code:
<asp:Button ID="buttonAdd" runat="server" Text="Add" />
<script type="text/javascript" language="javascript">
$(document).ready(function()
{
$('#<%= buttonAdd.ClientID %>').click(function(e)
{
showDialog('#addPerson');
if(/*Some Condition Is Not Met*/)
return false;
});
});
</script>
It's not that you're actually getting extra precision - it's that the float didn't accurately represent the number you were aiming for originally. The double is representing the original float accurately; toString
is showing the "extra" data which was already present.
For example (and these numbers aren't right, I'm just making things up) suppose you had:
float f = 0.1F;
double d = f;
Then the value of f
might be exactly 0.100000234523. d
will have exactly the same value, but when you convert it to a string it will "trust" that it's accurate to a higher precision, so won't round off as early, and you'll see the "extra digits" which were already there, but hidden from you.
When you convert to a string and back, you're ending up with a double value which is closer to the string value than the original float was - but that's only good if you really believe that the string value is what you really wanted.
Are you sure that float/double are the appropriate types to use here instead of BigDecimal
? If you're trying to use numbers which have precise decimal values (e.g. money), then BigDecimal
is a more appropriate type IMO.
You can proceed as follows to check whether a JToken Value is null
JToken token = jObject["key"];
if(token.Type == JTokenType.Null)
{
// Do your logic
}
To check if a path is an existing file:
Return
True
if path is an existing regular file. This follows symbolic links, so bothislink()
andisfile()
can be true for the same path.
In case someone else finds this topic while using localhost
in the file URIs - Internet Explorer acts completely different if the host name is localhost
or 127.0.0.1
- if you use the actual hostname, it works fine (from trusted sites/intranet zone).
Another big difference between IE and FF - IE is fine with uris like file://server/share/file.txt
but FF requires additional slashes file:////server/share/file.txt
.
@variable
is very useful if calling stored procedures from an application written in Java , Python etc.
There are ocassions where variable values are created in the first call and needed in functions of subsequent calls.
The advantage can be seen in Oracle PL/SQL where these variables have 3 different scopes:
I have developed an architecture in which the complete code is written in PL/SQL. These are called from a middle-ware written in Java. There are two types of middle-ware. One to cater calls from a client which is also written in Java. The other other one to cater for calls from a browser. The client facility is implemented 100 percent in JavaScript. A command set is used instead of HTML and JavaScript for writing application in PL/SQL.
I have been looking for the same facility to port the codes written in PL/SQL to another database. The nearest one I have found is Postgres. But all the variables have function scope.
@
in MySQLI am happy to see that at least this @
facility is there in MySQL. I don't think Oracle will build same facility available in PL/SQL to MySQL stored procedures since it may affect the sales of Oracle database.
In C++ (without error checking):
std::string blob = ...; // assume blob is in the string
std::string query = "INSERT INTO foo (blob_column) VALUES (?);";
sqlite3_stmt *stmt;
sqlite3_prepare_v2(db, query, query.size(), &stmt, nullptr);
sqlite3_bind_blob(stmt, 1, blob.data(), blob.size(),
SQLITE_TRANSIENT);
That can be SQLITE_STATIC
if the query will be executed before blob
gets destructed.
Going off of @Powerlord's answer,
"There is one catch: 0 % 3 is equal to 0. This could result in unexpected results if your counter starts at 0."
You can still start your counter at 0 (arrays, querys), but offset it
if (($counter + 1) % 3 == 0) {
echo 'image file';
}
Try itext
. Add dependency to your build.gradle
for latest as of this post
Note: special version for android, trailing "g":
dependencies {
compile 'com.itextpdf:itextg:5.5.9'
}
For those of you looking to this in an azure devops pipeline, this can be achieved by adding the PowerShell on target machines task and running the following script:
$envVariables = (
@{name='VARIABLE1';value='Value1'},
@{name='VARIABLE2';value='Value2'}
)
Set-WebConfigurationProperty -PSPath IIS:\ -Location $('mySite') -Filter /system.webServer/aspNetCore/environmentVariables -Name . -Value $envVariables
You could use javascript. The other answers to date seem to also target Safari.
if (navigator.userAgent.toLowerCase().indexOf('chrome') > -1) {
alert("You'll only see this in Chrome");
$('#someID').css('background-position', '10px 20px');
}