Another solution that may work for people, since none of the text options worked for me:
.gitattributes
with a single line: * binary
. This tells git to treat every file as a binary file that it can't do anything with.git checkout -- <files>
to restore them to the repository versiongit checkout -- .gitattributes
to restore the .gitattributes
file to its initial stateHere are the significant differences between lateinit var
and by lazy { ... }
delegated property:
lazy { ... }
delegate can only be used for val
properties, whereas lateinit
can only be applied to var
s, because it can't be compiled to a final
field, thus no immutability can be guaranteed;
lateinit var
has a backing field which stores the value, and by lazy { ... }
creates a delegate object in which the value is stored once calculated, stores the reference to the delegate instance in the class object and generates the getter for the property that works with the delegate instance. So if you need the backing field present in the class, use lateinit
;
In addition to val
s, lateinit
cannot be used for nullable properties or Java primitive types (this is because of null
used for uninitialized value);
lateinit var
can be initialized from anywhere the object is seen from, e.g. from inside a framework code, and multiple initialization scenarios are possible for different objects of a single class. by lazy { ... }
, in turn, defines the only initializer for the property, which can be altered only by overriding the property in a subclass. If you want your property to be initialized from outside in a way probably unknown beforehand, use lateinit
.
Initialization by lazy { ... }
is thread-safe by default and guarantees that the initializer is invoked at most once (but this can be altered by using another lazy
overload). In the case of lateinit var
, it's up to the user's code to initialize the property correctly in multi-threaded environments.
A Lazy
instance can be saved, passed around and even used for multiple properties. On contrary, lateinit var
s do not store any additional runtime state (only null
in the field for uninitialized value).
If you hold a reference to an instance of Lazy
, isInitialized()
allows you to check whether it has already been initialized (and you can obtain such instance with reflection from a delegated property). To check whether a lateinit property has been initialized, you can use property::isInitialized
since Kotlin 1.2.
A lambda passed to by lazy { ... }
may capture references from the context where it is used into its closure.. It will then store the references and release them only once the property has been initialized. This may lead to object hierarchies, such as Android activities, not being released for too long (or ever, if the property remains accessible and is never accessed), so you should be careful about what you use inside the initializer lambda.
Also, there's another way not mentioned in the question: Delegates.notNull()
, which is suitable for deferred initialization of non-null properties, including those of Java primitive types.
I've faced the exactly same problem but I've fixed it with another approache.
Using Ubuntu 18.04, first disable systemd-resolved
service.
sudo systemctl disable systemd-resolved.service
Stop the service
sudo systemctl stop systemd-resolved.service
Then, remove the link to /run/systemd/resolve/stub-resolv.conf
in /etc/resolv.conf
sudo rm /etc/resolv.conf
Add a manually created resolv.conf
in /etc/
sudo vim /etc/resolv.conf
Add your prefered DNS server there
nameserver 208.67.222.222
I've tested this with success.
Do you mean just this:
SELECT Count(*) FROM YourTable WHERE Position = 'Manager'
If so, then yup that works!
Strings are hard work in C.
#include <stdio.h>
int main()
{
int i;
char buf[12];
for (i = 0; i < 100; i++) {
snprintf(buf, 12, "pre_%d_suff", i); // puts string into buffer
printf("%s\n", buf); // outputs so you can see it
}
}
The 12
is enough bytes to store the text "pre_"
, the text "_suff"
, a string of up to two characters ("99"
) and the NULL terminator that goes on the end of C string buffers.
This will tell you how to use snprintf
, but I suggest a good C book!
You could also use GDAL to do this. I realize that it is a geospatial toolkit, but nothing requires you to have a cartographic product.
Link to precompiled GDAL binaries for windows (assuming windows here) http://www.gisinternals.com/sdk/
To access the array:
from osgeo import gdal
dataset = gdal.Open("path/to/dataset.tiff", gdal.GA_ReadOnly)
for x in range(1, dataset.RasterCount + 1):
band = dataset.GetRasterBand(x)
array = band.ReadAsArray()
Change your signatures to private static bool siprimo(long a) and private static long volteado(long a) and see where that gets you.
Another solution, this time making use of regular expressions:
using System.Text.RegularExpressions;
...
Regex parts = new Regex(@"^\d+\t(\d+)\t.+?\t(item\\[^\t]+\.ddj)");
StreamReader reader = FileInfo.OpenText("filename.txt");
string line;
while ((line = reader.ReadLine()) != null) {
Match match = parts.Match(line);
if (match.Success) {
int number = int.Parse(match.Group(1).Value);
string path = match.Group(2).Value;
// At this point, `number` and `path` contain the values we want
// for the current line. We can then store those values or print them,
// or anything else we like.
}
}
That expression's a little complex, so here it is broken down:
^ Start of string
\d+ "\d" means "digit" - 0-9. The "+" means "one or more."
So this means "one or more digits."
\t This matches a tab.
(\d+) This also matches one or more digits. This time, though, we capture it
using brackets. This means we can access it using the Group method.
\t Another tab.
.+? "." means "anything." So "one or more of anything". In addition, it's lazy.
This is to stop it grabbing everything in sight - it'll only grab as much
as it needs to for the regex to work.
\t Another tab.
(item\\[^\t]+\.ddj)
Here's the meat. This matches: "item\<one or more of anything but a tab>.ddj"
3 ½ Years later...
For my own project I wanted to flatten JSON objects in mongoDB dot notation and came up with a simple solution:
/**
* Recursively flattens a JSON object using dot notation.
*
* NOTE: input must be an object as described by JSON spec. Arbitrary
* JS objects (e.g. {a: () => 42}) may result in unexpected output.
* MOREOVER, it removes keys with empty objects/arrays as value (see
* examples bellow).
*
* @example
* // returns {a:1, 'b.0.c': 2, 'b.0.d.e': 3, 'b.1': 4}
* flatten({a: 1, b: [{c: 2, d: {e: 3}}, 4]})
* // returns {a:1, 'b.0.c': 2, 'b.0.d.e.0': true, 'b.0.d.e.1': false, 'b.0.d.e.2.f': 1}
* flatten({a: 1, b: [{c: 2, d: {e: [true, false, {f: 1}]}}]})
* // return {a: 1}
* flatten({a: 1, b: [], c: {}})
*
* @param obj item to be flattened
* @param {Array.string} [prefix=[]] chain of prefix joined with a dot and prepended to key
* @param {Object} [current={}] result of flatten during the recursion
*
* @see https://docs.mongodb.com/manual/core/document/#dot-notation
*/
function flatten (obj, prefix, current) {
prefix = prefix || []
current = current || {}
// Remember kids, null is also an object!
if (typeof (obj) === 'object' && obj !== null) {
Object.keys(obj).forEach(key => {
this.flatten(obj[key], prefix.concat(key), current)
})
} else {
current[prefix.join('.')] = obj
}
return current
}
Features and/or caveats
{a: () => {}}
you might not get what you wanted!{a: {}, b: []}
is flattened to {}
.For info, in your .bowerrc
file you can add a no-proxy attribute. I don't know since when it is supported but it works on bower 1.7.4
.bowerrc :
{
"directory": "bower_components",
"proxy": "http://yourProxy:yourPort",
"https-proxy":"http://yourProxy:yourPort",
"no-proxy":"myserver.mydomain.com"
}
.bowerrc
should be located in the root folder of your Javascript project, the folder in which you launch the bower command. You can also have it in your home folder (~/.bowerrc
).
You could format the dates before you add them to your array. That is how I did. I used AngularJS
//convert the date to a standard format
var dt = new Date(date);
//take only the date and month and push them to your label array
$rootScope.charts.mainChart.labels.push(dt.getDate() + "-" + (dt.getMonth() + 1));
Use this array in your chart presentation
It looks like there is some small chance that Defender Methods (i.e. default methods) might make it into Java 8. However, as far as I understand them, they only allow the author of an interface
to retroactively extend it, not arbitrary users.
Defender Methods + Interface Injection would then be able to fully implement C#-style extension methods, but AFAICS, Interface Injection isn't even on the Java 8 road-map yet.
Utilizing the fact that you can do set operations on arrays by doing &
(intersection), -
(difference), and |
(union).
Obviously I didn't implement the MultiSet to spec, but this should get you started:
class MultiSet
attr_accessor :set
def initialize(set)
@set = set
end
# intersection
def &(other)
@set & other.set
end
# difference
def -(other)
@set - other.set
end
# union
def |(other)
@set | other.set
end
end
x = MultiSet.new([1,1,2,2,3,4,5,6])
y = MultiSet.new([1,3,5,6])
p x - y # [2,2,4]
p x & y # [1,3,5,6]
p x | y # [1,2,3,4,5,6]
You don't need to --relocate
since the branch is within the same repository URL. Just do:
svn switch https://www.example.com/svn/branches/v1p2p3
date.ToString("HH:mm:ss"); // for 24hr format
date.ToString("hh:mm:ss"); // for 12hr format, it shows AM/PM
Refer this link for other Formatters in DateTime.
Simple, [yourobject class] it will return the class name of yourobject.
You can associate directly the function object window.destroy
to the command
attribute of your button
:
button = Button (frame, text="Good-bye.", command=window.destroy)
This way you will not need the function close_window
to close the window for you.
Rename the solution's corresponding .SUO file. The SUO file contains the TFS status (online/offline), amongst a host of other goodies.
Do this only if the "right-click on the solution name right at the top of the Solution Explorer and select the Go Online option" fails (because e.g. you installed VS2015 preview).
This error may happen when mapping variables you defined in REST definition do not match with @PathVariable names.
Example: Suppose you defined in the REST definition
@GetMapping(value = "/{appId}", produces = "application/json", consumes = "application/json")
Then during the definition of the function, it should be
public ResponseEntity<List> getData(@PathVariable String appId)
This error may occur when you use any other variable other than defined in the REST controller definition with @PathVariable. Like, the below code will raise the error as ID is different than appId variable name:
public ResponseEntity<List> getData(@PathVariable String ID)
I was struggling to find a solution for arbitrary length byte sequences that would work under Python 2.x. Finally I wrote this one, it's a bit hacky because it performs a string conversion, but it works.
def signedbytes(data):
"""Convert a bytearray into an integer, considering the first bit as
sign. The data must be big-endian."""
negative = data[0] & 0x80 > 0
if negative:
inverted = bytearray(~d % 256 for d in data)
return -signedbytes(inverted) - 1
encoded = str(data).encode('hex')
return int(encoded, 16)
This function has two requirements:
The input data
needs to be a bytearray
. You may call the function like this:
s = 'y\xcc\xa6\xbb'
n = signedbytes(s)
The data needs to be big-endian. In case you have a little-endian value, you should reverse it first:
n = signedbytes(s[::-1])
Of course, this should be used only if arbitrary length is needed. Otherwise, stick with more standard ways (e.g. struct
).
This is a little old but should get you started:
//******************************************************************************
// Automated platform detection
//******************************************************************************
// _WIN32 is used by
// Visual C++
#ifdef _WIN32
#define __NT__
#endif
// Define __MAC__ platform indicator
#ifdef macintosh
#define __MAC__
#endif
// Define __OSX__ platform indicator
#ifdef __APPLE__
#define __OSX__
#endif
// Define __WIN16__ platform indicator
#ifdef _Windows_
#ifndef __NT__
#define __WIN16__
#endif
#endif
// Define Windows CE platform indicator
#ifdef WIN32_PLATFORM_HPCPRO
#define __WINCE__
#endif
#if (_WIN32_WCE == 300) // for Pocket PC
#define __POCKETPC__
#define __WINCE__
//#if (_WIN32_WCE == 211) // for Palm-size PC 2.11 (Wyvern)
//#if (_WIN32_WCE == 201) // for Palm-size PC 2.01 (Gryphon)
//#ifdef WIN32_PLATFORM_HPC2000 // for H/PC 2000 (Galileo)
#endif
What the error is telling, is that you can't convert an entire list into an integer. You could get an index from the list and convert that into an integer:
x = ["0", "1", "2"]
y = int(x[0]) #accessing the zeroth element
If you're trying to convert a whole list into an integer, you are going to have to convert the list into a string first:
x = ["0", "1", "2"]
y = ''.join(x) # converting list into string
z = int(y)
If your list elements are not strings, you'll have to convert them to strings before using str.join
:
x = [0, 1, 2]
y = ''.join(map(str, x))
z = int(y)
Also, as stated above, make sure that you're not returning a nested list.
You can read about the changes in What's New In Python 3.0. You should read it thoroughly when you move from 2.x to 3.x since a lot has been changed.
The whole answer here are quotes from the documentation.
Views And Iterators Instead Of Lists
Some well-known APIs no longer return lists:
- [...]
map()
andfilter()
return iterators. If you really need a list, a quick fix is e.g.list(map(...))
, but a better fix is often to use a list comprehension (especially when the original code uses lambda), or rewriting the code so it doesn’t need a list at all. Particularly tricky ismap()
invoked for the side effects of the function; the correct transformation is to use a regularfor
loop (since creating a list would just be wasteful).- [...]
- [...]
- Removed
reduce()
. Usefunctools.reduce()
if you really need it; however, 99 percent of the time an explicitfor
loop is more readable.- [...]
There is no b['body']
in python. You have to use get_payload.
if isinstance(mailEntity.get_payload(), list):
for eachPayload in mailEntity.get_payload():
...do things you want...
...real mail body is in eachPayload.get_payload()...
else:
...means there is only text/plain part....
...use mailEntity.get_payload() to get the body...
Good Luck.
You should add the code into pom.xml like:
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
</properties>
In addition to trying 2Toad's answer, I also ended up having to close Visual Studio and delete my .vs folder. After that, everything built correctly.
Incidentally, the error I was encountering didn't specify my Temp folder at all, but was referencing something else that was obviously system-generated. I neglected to save the specific error :\
If you'd like to check for a particular module installed globally, on *nix systems use:
npm list -g --depth=0 | grep <module_name>
Actually, I just noticed that the shell syntax somewhat has a behavior built-in that allows for easy reconstruction of the array when, as posed in the question, an item should be removed.
# let's set up an array of items to consume:
x=()
for (( i=0; i<10; i++ )); do
x+=("$i")
done
# here, we consume that array:
while (( ${#x[@]} )); do
i=$(( $RANDOM % ${#x[@]} ))
echo "${x[i]} / ${x[@]}"
x=("${x[@]:0:i}" "${x[@]:i+1}")
done
Notice how we constructed the array using bash's x+=()
syntax?
You could actually add more than one item with that, the content of a whole other array at once.
If you creating a new project based on an existing Maven structure :
Create the project using a general project wizard and give the project the same name as just created.
If you try to create the project as a Maven project via m2e will receive an error that project/pom already exists.
The most efficient way is by ID.
$("#foo").val(); //by id
You can read more here:
https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Writing_efficient_CSS
https://developers.google.com/speed/docs/best-practices/rendering?hl=it#UseEfficientCSSSelectors
This is how it look like in pure bash
cat /usr/lib/cgi-bin/index.cgi
#!/bin/bash
echo Content-type: text/html
echo ""
## make POST and GET stings
## as bash variables available
if [ ! -z $CONTENT_LENGTH ] && [ "$CONTENT_LENGTH" -gt 0 ] && [ $CONTENT_TYPE != "multipart/form-data" ]; then
read -n $CONTENT_LENGTH POST_STRING <&0
eval `echo "${POST_STRING//;}"|tr '&' ';'`
fi
eval `echo "${QUERY_STRING//;}"|tr '&' ';'`
echo "<!DOCTYPE html>"
echo "<html>"
echo "<head>"
echo "</head>"
if [[ "$vote" = "a" ]];then
echo "you pressed A"
sudo /usr/local/bin/run_a.sh
elif [[ "$vote" = "b" ]];then
echo "you pressed B"
sudo /usr/local/bin/run_b.sh
fi
echo "<body>"
echo "<div id=\"content-container\">"
echo "<div id=\"content-container-center\">"
echo "<form id=\"choice\" name='form' method=\"POST\" action=\"/\">"
echo "<button id=\"a\" type=\"submit\" name=\"vote\" class=\"a\" value=\"a\">A</button>"
echo "<button id=\"b\" type=\"submit\" name=\"vote\" class=\"b\" value=\"b\">B</button>"
echo "</form>"
echo "<div id=\"tip\">"
echo "</div>"
echo "</div>"
echo "</div>"
echo "</div>"
echo "</body>"
echo "</html>"
Build with https://github.com/tinoschroeter/bash_on_steroids
You can also try lodash:
const isNumeric = number =>
_.isFinite(_.parseInt(number)) && !_.isNaN(_.parseInt(number))
getTime()
retrieves the milliseconds since Jan 1, 1970 GMT passed to the constructor. It should not be too hard to get the Unix time (same, but in seconds) from that.
You could use width: 100%;
in your css.
It would behoove you, if you're going to use any of the gazillion algorithms that you're going to be presented with in this thread, to learn to memoize some of them.
See Interview question : What is the fastest way to generate prime number recursively?
I'm using Bootstrap 4 and Dennis Puzak's solution does not work for me.
The next solution works for me
.form-control::placeholder { color: white;} /* Chrome, Firefox, Opera*/
:-ms-input-placeholder.form-control { color: white; } /* Internet Explorer*/
.form-control::-ms-input-placeholder { color: white; } /* Microsoft Edge*/
There seems to be some confusion over how to get this set up for the Express version specifically. Using the Windows Desktop (WD) version of VS Express 2012, I followed the instructions in Steve B's and Rick Martin's answers with the modifications below.
"C:\Program Files (x86)\Microsoft Visual Studio 11.0\Common7\IDE\Extensions\Microsoft\XNA Game Studio 4.0"
, copy to "C:\Program Files (x86)\Microsoft Visual Studio 11.0\Common7\IDE\WDExpressExtensions\Microsoft\XNA Game Studio 4.0"
<Edition>WDExpress</Edition>
(you should be able to see where it makes sense)devenv.exe
with WDExpress.exe
"%LocalAppData%\Microsoft\VisualStudio\11.0\Extensions"
with "%LocalAppData%\Microsoft\WDExpress\11.0\Extensions"
I haven't done a lot of work since then, but I did manage to create a new game project and it seems fine so far.
I faced the same issue today,
And solved it easily by following points
1) Start the StandAlone SDK manager (To open the standalone sdk manager - Tools>Android>SDKManager> at Bottom YOu will see a link to launch StandAlone SDK manager)
2) Delete tha package of SDK Build Tools that you have already installed for e.g 24.0.0 rc4.
3) Close the standalone SDK manager then Restart Android Studio.
4) Once after restart the gradle will start building the project and you will get an alert download the package of SDK build tool and Sync. CLick on that and you will start downloading like that...
I hope this helps
Format, days, months and year:
var regex = /^(0[1-9]|[12][0-9]|3[01])[- /.](0[1-9]|1[012])[- /.](19|20)\d\d$/;
Here is how the standard keyboard behaves for each of these input types.
See this answer for more details.
The issue here is that input()
returns a string in Python 3.x, so when you do your comparison, you are comparing a string and an integer, which isn't well defined (what if the string is a word, how does one compare a string and a number?) - in this case Python doesn't guess, it throws an error.
To fix this, simply call int()
to convert your string to an integer:
int(input(...))
As a note, if you want to deal with decimal numbers, you will want to use one of float()
or decimal.Decimal()
(depending on your accuracy and speed needs).
Note that the more pythonic way of looping over a series of numbers (as opposed to a while
loop and counting) is to use range()
. For example:
def main():
print("Let me Retire Financial Calculator")
deposit = float(input("Please input annual deposit in dollars: $"))
rate = int(input ("Please input annual rate in percentage: %")) / 100
time = int(input("How many years until retirement?"))
value = 0
for x in range(1, time+1):
value = (value * rate) + deposit
print("The value of your account after" + str(x) + "years will be $" + str(value))
check this out.
String name validation only accept alphabets and spaces
public static boolean validateLetters(String txt) {
String regx = "^[a-zA-Z\\s]+$";
Pattern pattern = Pattern.compile(regx,Pattern.CASE_INSENSITIVE);
Matcher matcher = pattern.matcher(txt);
return matcher.find();
}
since android 4.4 file saving has been changed. there is
ContextCompat.getExternalFilesDirs(context, name);
it retuns an array.
when name is null
the first value is like /storage/emulated/0/Android/com.my.package/files
the second value is like /storage/extSdCard/Android/com.my.package/files
android 4.3 and less it retuns a single item array
parts of little messy code but it demonstrates how it works:
/** Create a File for saving an image or video
* @throws Exception */
private File getOutputMediaFile(int type) throws Exception{
// Check that the SDCard is mounted
File mediaStorageDir;
if(internalstorage.isChecked())
{
mediaStorageDir = new File(getFilesDir().getAbsolutePath() );
}
else
{
File[] dirs=ContextCompat.getExternalFilesDirs(this, null);
mediaStorageDir = new File(dirs[dirs.length>1?1:0].getAbsolutePath() );
}
// Create the storage directory(MyCameraVideo) if it does not exist
if (! mediaStorageDir.exists()){
if (! mediaStorageDir.mkdirs()){
output.setText("Failed to create directory.");
Toast.makeText(this, "Failed to create directory.", Toast.LENGTH_LONG).show();
Log.d("myapp", "Failed to create directory");
return null;
}
}
// Create a media file name
// For unique file name appending current timeStamp with file name
java.util.Date date= new java.util.Date();
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss",Locale.ENGLISH) .format(date.getTime());
File mediaFile;
if(type == MEDIA_TYPE_VIDEO) {
// For unique video file name appending current timeStamp with file name
mediaFile = new File(mediaStorageDir.getPath() + File.separator + slpid + "_" + pwsid + "_" + timeStamp + ".mp4");
}
else if(type == MEDIA_TYPE_AUDIO) {
// For unique video file name appending current timeStamp with file name
mediaFile = new File(mediaStorageDir.getPath() + File.separator + slpid + "_" + pwsid + "_" + timeStamp + ".3gp");
} else {
return null;
}
return mediaFile;
}
/** Create a file Uri for saving an image or video
* @throws Exception */
private Uri getOutputMediaFileUri(int type) throws Exception{
return Uri.fromFile(getOutputMediaFile(type));
}
//usage:
try {
file=getOutputMediaFileUri(MEDIA_TYPE_AUDIO).getPath();
} catch (Exception e1) {
e1.printStackTrace();
return;
}
I think you should first define all your routes and as the last route add
//The 404 Route (ALWAYS Keep this as the last route)
app.get('*', function(req, res){
res.status(404).send('what???');
});
An example app which does work:
var express = require('express'),
app = express.createServer();
app.use(express.static(__dirname + '/public'));
app.get('/', function(req, res){
res.send('hello world');
});
//The 404 Route (ALWAYS Keep this as the last route)
app.get('*', function(req, res){
res.send('what???', 404);
});
app.listen(3000, '127.0.0.1');
alfred@alfred-laptop:~/node/stackoverflow/6528876$ mkdir public
alfred@alfred-laptop:~/node/stackoverflow/6528876$ find .
alfred@alfred-laptop:~/node/stackoverflow/6528876$ echo "I don't find a function for that... Anyone knows?" > public/README.txt
alfred@alfred-laptop:~/node/stackoverflow/6528876$ cat public/README.txt
.
./app.js
./public
./public/README.txt
alfred@alfred-laptop:~/node/stackoverflow/6528876$ curl http://localhost:3000/
hello world
alfred@alfred-laptop:~/node/stackoverflow/6528876$ curl http://localhost:3000/README.txt
I don't find a function for that... Anyone knows?
The "table-column" display type means it acts like the <col>
tag in HTML - i.e. an invisible element whose width* governs the width of the corresponding physical column of the enclosing table.
See the W3C standard for more information about the CSS table model.
* And a few other properties like borders, backgrounds.
I think print()
is slower than echo
.
I like to use print()
only for situations like:
echo 'Doing some stuff... ';
foo() and print("ok.\n") or print("error: " . getError() . ".\n");
If your DataGridView
is bound to a DataSet
, you can not just add a new row in your DataGridView
display. It will now work properly.
Instead you should add the new row in the DataSet
with this code:
BindingSource[Name].AddNew()
This code will also automatically add a new row in your DataGridView
display.
Please use if condition with while loop and try.
eg.
if ($result = $conn->query($query)) {
/* fetch associative array */
while ($row = $result->fetch_assoc()) {
}
/* free result set */
$result->free();
}
Using HTTP Request verb such as GET, POST, DELETE, PUT etc... enables you to build RESTful web applications. Read about it here: http://en.wikipedia.org/wiki/Representational_state_transfer
The easiest way to see benefits from this is to look at this example.
Every MVC framework has a Router/Dispatcher
that maps URL-s to actionControllers.
So URL like this: /blog/article/1
would invoke blogController::articleAction($id);
Now this Router is only aware of the URL or /blog/article/1/
But if that Router would be aware of whole HTTP Request object instead of just URL, he could have access HTTP Request verb (GET, POST, PUT, DELETE...), and many other useful stuff about current HTTP Request.
That would enable you to configure application so it can accept the same URL and map it to different actionControllers depending on the HTTP Request verb.
For example:
if you want to retrive article 1 you can do this:
GET /blog/article/1 HTTP/1.1
but if you want to delete article 1 you will do this:
DELETE /blog/article/1 HTTP/1.1
Notice that both HTTP Requests have the same URI, /blog/article/1, the only difference is the HTTP Request verb. And based on that verb your router can call different actionController. This enables you to build neat URL-s.
Read this two articles, they might help you:
These articles are about Symfony 2 framework, but they can help you to figure out how does HTTP Requests and Responses work.
Hope this helps!
I like the viewer of Total Commander because it only loads the text you actually see and so is very fast. Of course, it is just a text/hex viewer, so it won't format your XML, but you can use a basic text search.
backups
folder into data
folder. This worked for me. Use sortedWith
to sort a list with Comparator
.
You can then construct a comparator using several ways:
I use div instead of tables and am able to target classes within the main class, as below:
.main {
.width: 800px;
.margin: 0 auto;
.text-align: center;
}
.main .table {
width: 80%;
}
.main .row {
/ ***something ***/
}
.main .column {
font-size: 14px;
display: inline-block;
}
.main .left {
width: 140px;
margin-right: 5px;
font-size: 12px;
}
.main .right {
width: auto;
margin-right: 20px;
color: #fff;
font-size: 13px;
font-weight: normal;
}
<div class="main">
<div class="table">
<div class="row">
<div class="column left">Swing Over Bed</div>
<div class="column right">650mm</div>
<div class="column left">Swing In Gap</div>
<div class="column right">800mm</div>
</div>
</div>
</div>
If you want to style a particular "cell" exclusively you can use another sub-class or the id of the div e.g:
.main #red { color: red; }
<div class="main">
<div class="table">
<div class="row">
<div id="red" class="column left">Swing Over Bed</div>
<div class="column right">650mm</div>
<div class="column left">Swing In Gap</div>
<div class="column right">800mm</div>
</div>
</div>
</div>
If it's open to a modification, you could use a suffix instead of a prefix. Then you could use tab-completion to get the original filename and add the suffix.
Otherwise, no this isn't something that is supported by the mv command. A simple shell script could cope though.
You can use sed as follows:
MY_NEW_VAR=$(echo $testVar | sed -e 's/\r//g')
echo ${MY_NEW_VAR} got it
By the way, try to do a dos2unix
on your data file.
Change the button to :
<button onclick="getElementById('hidden-div').style.display = 'block'; this.style.display = 'none'">Check Availability</button>
Or even better, use a proper event handler by identifying the button :
<button id="show_button">Check Availability</button>
and a script
<script type="text/javascript">
var button = document.getElementById('show_button')
button.addEventListener('click',hideshow,false);
function hideshow() {
document.getElementById('hidden-div').style.display = 'block';
this.style.display = 'none'
}
</script>
INSERT INTO servers (server_name, online_status, exchange, disk_space, network_shares)
VALUES('m1','ONLINE','exchange','disk_space','network_shares', NOW())
Sometimes, it may help switching off AllowAutoRedirect
and setting both login POST
and page GET
requests the same user agent.
request.UserAgent = userAgent;
request.AllowAutoRedirect = false;
OK, for me that is the way it worked (I am using Python 2.7):
a = __import__('file_to_import', globals(), locals(), ['*'], -1)
b = a.MyClass()
Then, b is an instance of class 'MyClass'
Angular hasn't provided a way to signal when a page finished loading, maybe because "finished" depends on your application. For example, if you have hierarchical tree of partials, one loading the others. "Finish" would mean that all of them have been loaded. Any framework would have a hard time analyzing your code and understanding that everything is done, or still waited upon. For that, you would have to provide application-specific logic to check and determine that.
In addition to what Tichodroma said, you might end up using this syntax:
outputString=$(python myPythonScript arg1 arg2 arg3)
The problem you have is related to TCP streaming nature.
The fact that you sent 100 Bytes (for example) from the server doesn't mean you will read 100 Bytes in the client the first time you read. Maybe the bytes sent from the server arrive in several TCP segments to the client.
You need to implement a loop in which you read until the whole message was received.
Let me provide an example with DataInputStream
instead of BufferedinputStream
. Something very simple to give you just an example.
Let's suppose you know beforehand the server is to send 100 Bytes of data.
In client you need to write:
byte[] messageByte = new byte[1000];
boolean end = false;
String dataString = "";
try
{
DataInputStream in = new DataInputStream(clientSocket.getInputStream());
while(!end)
{
int bytesRead = in.read(messageByte);
dataString += new String(messageByte, 0, bytesRead);
if (dataString.length == 100)
{
end = true;
}
}
System.out.println("MESSAGE: " + dataString);
}
catch (Exception e)
{
e.printStackTrace();
}
Now, typically the data size sent by one node (the server here) is not known beforehand. Then you need to define your own small protocol for the communication between server and client (or any two nodes) communicating with TCP.
The most common and simple is to define TLV: Type, Length, Value. So you define that every message sent form server to client comes with:
So you know you have to receive a minimum of 2 Bytes and with the second Byte you know how many following Bytes you need to read.
This is just a suggestion of a possible protocol. You could also get rid of "Type".
So it would be something like:
byte[] messageByte = new byte[1000];
boolean end = false;
String dataString = "";
try
{
DataInputStream in = new DataInputStream(clientSocket.getInputStream());
int bytesRead = 0;
messageByte[0] = in.readByte();
messageByte[1] = in.readByte();
int bytesToRead = messageByte[1];
while(!end)
{
bytesRead = in.read(messageByte);
dataString += new String(messageByte, 0, bytesRead);
if (dataString.length == bytesToRead )
{
end = true;
}
}
System.out.println("MESSAGE: " + dataString);
}
catch (Exception e)
{
e.printStackTrace();
}
The following code compiles and looks better. It assumes the first two bytes providing the length arrive in binary format, in network endianship (big endian). No focus on different encoding types for the rest of the message.
import java.nio.ByteBuffer;
import java.io.DataInputStream;
import java.net.ServerSocket;
import java.net.Socket;
class Test
{
public static void main(String[] args)
{
byte[] messageByte = new byte[1000];
boolean end = false;
String dataString = "";
try
{
Socket clientSocket;
ServerSocket server;
server = new ServerSocket(30501, 100);
clientSocket = server.accept();
DataInputStream in = new DataInputStream(clientSocket.getInputStream());
int bytesRead = 0;
messageByte[0] = in.readByte();
messageByte[1] = in.readByte();
ByteBuffer byteBuffer = ByteBuffer.wrap(messageByte, 0, 2);
int bytesToRead = byteBuffer.getShort();
System.out.println("About to read " + bytesToRead + " octets");
//The following code shows in detail how to read from a TCP socket
while(!end)
{
bytesRead = in.read(messageByte);
dataString += new String(messageByte, 0, bytesRead);
if (dataString.length() == bytesToRead )
{
end = true;
}
}
//All the code in the loop can be replaced by these two lines
//in.readFully(messageByte, 0, bytesToRead);
//dataString = new String(messageByte, 0, bytesToRead);
System.out.println("MESSAGE: " + dataString);
}
catch (Exception e)
{
e.printStackTrace();
}
}
}
You can change the passwd file directly for the particular user or use the below command
chsh -s /usr/local/bin/bash username
Then log out and log in
Instead of if-else condition use if in both conditions. it will work that way but not sure why.
On your Terminal:
Type cd ~/
to go to your home folder.
Type touch .bash_profile
to create your new file.
open -e .bash_profile
to open it in TextEdit).. .bash_profile
to reload .bash_profile and update any
functions you add.A tuple technically qualifies as a constant, as a tuple will raise an error if you try to change one of its values. If you want to declare a tuple with one value, then place a comma after its only value, like this:
my_tuple = (0 """Or any other value""",)
To check this variable's value, use something similar to this:
if my_tuple[0] == 0:
#Code goes here
If you attempt to change this value, an error will be raised.
Check who the group and owner are of the folder where the script runs. If the group id or user id are wrong, for example, set to root, it will cause sessions to not be saved properly.
<?php
$subject = "this is a subject";
$message = "testing a message";
$headers .= "Reply-To: The Sender <[email protected]>\r\n";
$headers .= "Return-Path: The Sender <[email protected]>\r\n";
$headers .= "From: The Sender <[email protected]>\r\n";
$headers .= "Organization: Sender Organization\r\n";
$headers .= "MIME-Version: 1.0\r\n";
$headers .= "Content-type: text/plain; charset=iso-8859-1\r\n";
$headers .= "X-Priority: 3\r\n";
$headers .= "X-Mailer: PHP". phpversion() ."\r\n" ;
mail("[email protected]", $subject, $message, $headers);
?>
all the solutions given doesnt work.. dont concentrate only on the retrieving part. luk at the inserting of the image. i did the same mistake. I tuk an image from hard disk and saved it to database. The problem lies in the insert command. luk at my fault code..:
public bool convertImage()
{
try
{
MemoryStream ms = new MemoryStream();
pictureBox1.Image.Save(ms, ImageFormat.Jpeg);
photo = new byte[ms.Length];
ms.Position = 0;
ms.Read(photo, 0, photo.Length);
return true;
}
catch
{
MessageBox.Show("image can not be converted");
return false;
}
}
public void insertImage()
{
// SqlConnection con = new SqlConnection();
try
{
cs.Close();
cs.Open();
da.UpdateCommand = new SqlCommand("UPDATE All_students SET disco = " +photo+" WHERE Reg_no = '" + Convert.ToString(textBox1.Text)+ "'", cs);
da.UpdateCommand.ExecuteNonQuery();
cs.Close();
cs.Open();
int i = da.UpdateCommand.ExecuteNonQuery();
if (i > 0)
{
MessageBox.Show("Successfully Inserted...");
}
}
catch
{
MessageBox.Show("Error in Connection");
}
cs.Close();
}
The above code shows succesfully inserted... but actualy its saving the image in the form of wrong datatype.. whereas the datatype must bt "image".. so i improved the code..
public bool convertImage()
{
try
{
MemoryStream ms = new MemoryStream();
pictureBox1.Image.Save(ms, ImageFormat.Jpeg);
photo = new byte[ms.Length];
ms.Position = 0;
ms.Read(photo, 0, photo.Length);
return true;
}
catch
{
MessageBox.Show("image can not be converted");
return false;
}
}
public void insertImage()
{
// SqlConnection con = new SqlConnection();
try
{
cs.Close();
cs.Open();
//THIS WHERE THE CODE MUST BE CHANGED>>>>>>>>>>>>>>
da.UpdateCommand = new SqlCommand("UPDATE All_students SET disco = @img WHERE Reg_no = '" + Convert.ToString(textBox1.Text)+ "'", cs);
da.UpdateCommand.Parameters.Add("@img", SqlDbType.Image);//CHANGED TO IMAGE DATATYPE...
da.UpdateCommand.Parameters["@img"].Value = photo;
da.UpdateCommand.ExecuteNonQuery();
cs.Close();
cs.Open();
int i = da.UpdateCommand.ExecuteNonQuery();
if (i > 0)
{
MessageBox.Show("Successfully Inserted...");
}
}
catch
{
MessageBox.Show("Error in Connection");
}
cs.Close();
}
100% gurantee that there will be no PARAMETER NOT VALID error in retrieving....SOLVED!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
If 2 decimal places is your level of precision, then a "smallint" would handle this in the smallest space (2-bytes). You store the percent multiplied by 100.
EDIT: The decimal type is probably a better match. Then you don't need to manually scale. It takes 5 bytes per value.
String[] command = {"cmd.exe" , "/c", "start" , "cmd.exe" , "/k" , "\" dir && ipconfig
\"" };
ProcessBuilder probuilder = new ProcessBuilder( command );
probuilder.directory(new File("D:\\Folder1"));
Process process = probuilder.start();
I have faced the same question recently. What I understand is, if the branch you are checking in has a file which you modified and it happens to be also modified and committed by that branch. Then git will stop you from switching to the branch to keep your change safe before you commit or stash.
Look at HKLM\SOFTWARE\Microsoft\NET Framework Setup\NDP\v3.5\
. One of these must be true:
Version
value in that key should be 3.5.30729.01SP
value in the same key should be 1In C# (taken from the first comment), you could do something along these lines:
const string name = @"SOFTWARE\Microsoft\NET Framework Setup\NDP\v3.5";
RegistryKey subKey = Registry.LocalMachine.OpenSubKey(name);
var version = subKey.GetValue("Version").ToString();
var servicePack = subKey.GetValue("SP").ToString();
Use a second ArrayList for the 3 strings, not a primitive array. Ie.
private List<List<String>> addresses = new ArrayList<List<String>>();
Then you can have:
ArrayList<String> singleAddress = new ArrayList<String>();
singleAddress.add("17 Fake Street");
singleAddress.add("Phoney town");
singleAddress.add("Makebelieveland");
addresses.add(singleAddress);
(I think some strange things can happen with type erasure here, but I don't think it should matter here)
If you're dead set on using a primitive array, only a minor change is required to get your example to work. As explained in other answers, the size of the array can not be included in the declaration. So changing:
private ArrayList<String[]> addresses = new ArrayList<String[3]>();
to
private ArrayList<String[]> addresses = new ArrayList<String[]>();
will work.
I had similar problem before. But this was resolved when I started using hostname instead of IP address in my connection string.
An alternative solution uses the stash:
Before:
~/dev/gitpro $git stash list
~/dev/gitpro $git log --oneline -3
* 7049dd5 (HEAD -> master) c111
* 3f1fa3d c222
* 0a0f6c4 c333
note you cannot run 'git stash pop' without specifying the stash@{1} entry. The stash is a LIFO stack -- not FIFO -- so that would incorrectly pop the stash@{0} entry with c222's changes (instead of stash@{1} with c111's changes).
note if there are conflicting chunks between commits 111 and 222, then you'll be forced to resolve them when attempting to pop. (This would be the case if you went with an alternative rebase solution as well.)
After:
~/dev/gitpro $git stash list
stash@{0}: On master: c222
~/dev/gitpro $git log -2 --oneline
* edbd9e8 (HEAD -> master) c111
* 0a0f6c4 c333
In your webpack.config.js file add below:
var webpack = require("webpack");
plugins: [
new webpack.ProvidePlugin({
$: "jquery",
jQuery: "jquery"
})
],
Install jQuery using npm:
$ npm i jquery --save
In app.js file add below lines:
import $ from 'jquery';
window.jQuery = $;
window.$ = $;
This worked for me. :)
Yes it's true but you shouldn't care. Go with the one that's easier to read. If you have to benchmark your app, then focus on the bottlenecks.
I would guess that string concatenation isn't going to be your bottleneck.
In my case, I do an adb shell pm list packages
to see first what are the packages/apps installed in my Android device or emulator, then upon locating the desired package/app, I do an adb shell pm uninstall -k com.package.name
.
For future reference - the Line2D
artist returned by plot()
also has a set_markevery()
method which allows you to only set markers on certain points - see https://matplotlib.org/api/_as_gen/matplotlib.lines.Line2D.html#matplotlib.lines.Line2D.set_markevery
All the answers already covered most of the things but I will add my 5 cents. In short reverting a merge commit is quite simple:
git revert -m 1 <commit-hash>
If you have permission you can push it directly to the "master" branch otherwise simply push it to your "revert" branch and create pull request.
You might find more useful info on this subject here: https://itcodehub.blogspot.com/2019/06/how-to-revert-merge-in-git.html
1 gotcha: when you use "p" to put the line, it puts it after the line your cursor is on, so if you want to add the line after the line you're yanking, don't move the cursor down a line before putting the new line.
This code is probably good for Python 2. But in Python 3, this will cause an issue, something related to bit encoding. I was trying to make a simple TCP server and encountered the same problem. Encoding worked for me. Try this with sendto
command.
clientSocket.sendto(message.encode(),(serverName, serverPort))
Similarly you would use .decode()
to receive the data on the UDP server side, if you want to print it exactly as it was sent.
This error will also occur if you call .ps1
file from a .bat
file and file path has spaces.
The fix is to make sure there are no spaces in the path of .ps1
file.
You will have to override the OnPaint method, call the base implementation and the paint your own text.
You will need to create your own CustomProgressBar
and then override OnPaint
to draw what ever text you want.
Custom Progress Bar Class
namespace ProgressBarSample
{
public enum ProgressBarDisplayText
{
Percentage,
CustomText
}
class CustomProgressBar: ProgressBar
{
//Property to set to decide whether to print a % or Text
public ProgressBarDisplayText DisplayStyle { get; set; }
//Property to hold the custom text
public String CustomText { get; set; }
public CustomProgressBar()
{
// Modify the ControlStyles flags
//http://msdn.microsoft.com/en-us/library/system.windows.forms.controlstyles.aspx
SetStyle(ControlStyles.UserPaint | ControlStyles.AllPaintingInWmPaint, true);
}
protected override void OnPaint(PaintEventArgs e)
{
Rectangle rect = ClientRectangle;
Graphics g = e.Graphics;
ProgressBarRenderer.DrawHorizontalBar(g, rect);
rect.Inflate(-3, -3);
if (Value > 0)
{
// As we doing this ourselves we need to draw the chunks on the progress bar
Rectangle clip = new Rectangle(rect.X, rect.Y, (int)Math.Round(((float)Value / Maximum) * rect.Width), rect.Height);
ProgressBarRenderer.DrawHorizontalChunks(g, clip);
}
// Set the Display text (Either a % amount or our custom text
string text = DisplayStyle == ProgressBarDisplayText.Percentage ? Value.ToString() + '%' : CustomText;
using (Font f = new Font(FontFamily.GenericSerif, 10))
{
SizeF len = g.MeasureString(text, f);
// Calculate the location of the text (the middle of progress bar)
// Point location = new Point(Convert.ToInt32((rect.Width / 2) - (len.Width / 2)), Convert.ToInt32((rect.Height / 2) - (len.Height / 2)));
Point location = new Point(Convert.ToInt32((Width / 2) - len.Width / 2), Convert.ToInt32((Height / 2) - len.Height / 2));
// The commented-out code will centre the text into the highlighted area only. This will centre the text regardless of the highlighted area.
// Draw the custom text
g.DrawString(text, f, Brushes.Red, location);
}
}
}
}
Sample WinForms Application
using System;
using System.Linq;
using System.Windows.Forms;
using System.Collections.Generic;
namespace ProgressBarSample
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
// Set our custom Style (% or text)
customProgressBar1.DisplayStyle = ProgressBarDisplayText.CustomText;
customProgressBar1.CustomText = "Initialising";
}
private void btnReset_Click(object sender, EventArgs e)
{
customProgressBar1.Value = 0;
btnStart.Enabled = true;
}
private void btnStart_Click(object sender, EventArgs e)
{
btnReset.Enabled = false;
btnStart.Enabled = false;
for (int i = 0; i < 101; i++)
{
customProgressBar1.Value = i;
// Demo purposes only
System.Threading.Thread.Sleep(100);
// Set the custom text at different intervals for demo purposes
if (i > 30 && i < 50)
{
customProgressBar1.CustomText = "Registering Account";
}
if (i > 80)
{
customProgressBar1.CustomText = "Processing almost complete!";
}
if (i >= 99)
{
customProgressBar1.CustomText = "Complete";
}
}
btnReset.Enabled = true;
}
}
}
The solution is to set the default value in your .elem. But this annimation work fine with -moz but not yet implement in -webkit
Look at the fiddle I updated from yours : http://jsfiddle.net/DoubleYo/4Vz63/1648/
It works fine with Firefox but not with Chrome
.elem{_x000D_
position: absolute;_x000D_
top: 40px;_x000D_
left: 40px;_x000D_
width: 0; _x000D_
height: 0;_x000D_
border-style: solid;_x000D_
border-width: 75px;_x000D_
border-color: red blue green orange;_x000D_
transition-property: transform;_x000D_
transition-duration: 1s;_x000D_
}_x000D_
.elem:hover {_x000D_
animation-name: rotate; _x000D_
animation-duration: 2s; _x000D_
animation-iteration-count: infinite;_x000D_
animation-timing-function: linear;_x000D_
}_x000D_
_x000D_
@keyframes rotate {_x000D_
from {transform: rotate(0deg);}_x000D_
to {transform: rotate(360deg);}_x000D_
}
_x000D_
<div class="elem"></div>
_x000D_
If you can add another wrapping div "block3" you could do something like this.
<html>
<head>
<style type="text/css">
.block1 {color:red;width:120px;border:1px solid green; height: 100px;}
.block3 {float:left; width:10px;}
.block2 {color:blue;width:70px;border:2px solid black;position:relative;float:right;}
</style>
</head>
<body>
<div class='block1'>
<div class='block3'>
<p>text1</p>
<p>text2</p>
</div>
<div class='block2'>block2</DIV>
</div>
</body>
</html>
Use a linked list. It was designed for this exact situation.
If you still need the dictionary O(1) lookups, use both a dictionary and a linked list.
list[-1]
will retrieve the last element of the list without changing the list.
list.pop()
will retrieve the last element of the list, but it will mutate/change the original list. Usually, mutating the original list is not recommended.
Alternatively, if, for some reason, you're looking for something less pythonic, you could use list[len(list)-1]
, assuming the list is not empty.
There are many answers for your question, but I don't see anyone using lambda expresion:
var array = [1,2,3,4];
var anotherOne = [2,4];
var filteredArray = array.filter(x => anotherOne.indexOf(x) < 0);
function extractSummary(iCalContent) {
var rx = /\nSUMMARY:(.*)\n/g;
var arr = rx.exec(iCalContent);
return arr[1];
}
You need these changes:
Put the *
inside the parenthesis as
suggested above. Otherwise your matching
group will contain only one
character.
Get rid of the ^
and $
. With the global option they match on start and end of the full string, rather than on start and end of lines. Match on explicit newlines instead.
I suppose you want the matching group (what's
inside the parenthesis) rather than
the full array? arr[0]
is
the full match ("\nSUMMARY:..."
) and
the next indexes contain the group
matches.
String.match(regexp) is supposed to return an array with the matches. In my browser it doesn't (Safari on Mac returns only the full match, not the groups), but Regexp.exec(string) works.
Here's a method you can use to rotate an image in C#:
/// <summary>
/// method to rotate an image either clockwise or counter-clockwise
/// </summary>
/// <param name="img">the image to be rotated</param>
/// <param name="rotationAngle">the angle (in degrees).
/// NOTE:
/// Positive values will rotate clockwise
/// negative values will rotate counter-clockwise
/// </param>
/// <returns></returns>
public static Image RotateImage(Image img, float rotationAngle)
{
//create an empty Bitmap image
Bitmap bmp = new Bitmap(img.Width, img.Height);
//turn the Bitmap into a Graphics object
Graphics gfx = Graphics.FromImage(bmp);
//now we set the rotation point to the center of our image
gfx.TranslateTransform((float)bmp.Width / 2, (float)bmp.Height / 2);
//now rotate the image
gfx.RotateTransform(rotationAngle);
gfx.TranslateTransform(-(float)bmp.Width / 2, -(float)bmp.Height / 2);
//set the InterpolationMode to HighQualityBicubic so to ensure a high
//quality image once it is transformed to the specified size
gfx.InterpolationMode = InterpolationMode.HighQualityBicubic;
//now draw our new image onto the graphics object
gfx.DrawImage(img, new Point(0, 0));
//dispose of our Graphics object
gfx.Dispose();
//return the image
return bmp;
}
Tried everything but on Visual Studio 2015 Community edition I got it working when I installed MySQL for Visual Studio 1.2.4+ from http://dev.mysql.com/downloads/windows/visualstudio/ At time of writing I could download 1.2.6 which worked for me.
Release notes of 1.2.4 which adds support for VS2015 can be found at http://forums.mysql.com/read.php?3,633391
My approach would not be to start by writing your own API. Life's too short, and there are more pressing problems to solve. In this situation, I typically:
Start with something someone has already written. Odds are, it'll do what you want. You can always write your own later, if necessary. OpenCSV is as good a starting point as any.
Just wanted to add another simple way someone can sort the the WPF ListView
void SortListView(ListView listView)
{
IEnumerable listView_items = listView.Items.SourceCollection;
List<MY_ITEM_CLASS> listView_items_to_list = listView_items.Cast<MY_ITEM_CLASS>().ToList();
Comparer<MY_ITEM_CLASS> scoreComparer = Comparer<MY_ITEM_CLASS>.Create((first, second) => first.COLUMN_NAME.CompareTo(second.COLUMN_NAME));
listView_items_to_list.Sort(scoreComparer);
listView.ItemsSource = null;
listView.Items.Clear();
listView.ItemsSource = listView_items_to_list;
}
I haven't touched React in a while, but want to thank and highlight the comment below by @Shimrit Snapir
on React-Router 6.0 <Redirect /> changed to <Navigate />
tl:dr;
if (navigate) {
return <Redirect to="/" push={true} />
}
The simple and declarative answer is that you need to use <Redirect to={URL} push={boolean} />
in combination with setState()
push: boolean - when true, redirecting will push a new entry onto the history instead of replacing the current one.
import { Redirect } from 'react-router'
class FooBar extends React.Component {
state = {
navigate: false
}
render() {
const { navigate } = this.state
// here is the important part
if (navigate) {
return <Redirect to="/" push={true} />
}
// ^^^^^^^^^^^^^^^^^^^^^^^
return (
<div>
<button onClick={() => this.setState({ navigate: true })}>
Home
</button>
</div>
)
}
}
Full example here. Read more here.
PS. The example uses ES7+ Property Initializers to initialise state. Look here as well, if you're interested.
I know there is an accepted answer already, but I wanted to show one cool way to do it in single command with the help of magrittr package.
PlantGrowth %$% # open dataset and make colnames accessible with '$'
split(weight,group) %T>% # split by group and side-pipe it into boxplot
boxplot %>% # plot
lapply(mean) %>% # data from split can still be used thanks to side-pipe '%T>%'
unlist %T>% # convert to atomic and side-pipe it to points
points(pch=18) %>% # add points for means to the boxplot
text(x=.+0.06,labels=.) # use the values to print text
This code will produce a boxplot with means printed as points and values:
I split the command on multiple lines so I can comment on what each part does, but it can also be entered as a oneliner. You can learn more about this in my gist.
Converting int64
:
n := int64(32)
str := strconv.FormatInt(n, 10)
fmt.Println(str)
// Prints "32"
Why not try the following in the init script:
setuid $USER application_name
It worked for me.
This has been answered for the most part, but I will expand...
Step 1
My goal was to enable zoom at certain times, and disable it at others.
// enable pinch zoom
var $viewport = $('head meta[name="viewport"]');
$viewport.attr('content', 'width=device-width, initial-scale=1, maximum-scale=4');
// ...later...
// disable pinch zoom
$viewport.attr('content', 'width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no');
Step 2
The viewport tag would update, but pinch zoom was still active!! I had to find a way to get the page to pick up the changes...
It's a hack solution, but toggling the opacity of body did the trick. I'm sure there are other ways to accomplish this, but here's what worked for me.
// after updating viewport tag, force the page to pick up changes
document.body.style.opacity = .9999;
setTimeout(function(){
document.body.style.opacity = 1;
}, 1);
Step 3
My problem was mostly solved at this point, but not quite. I needed to know the current zoom level of the page so I could resize some elements to fit on the page (think of map markers).
// check zoom level during user interaction, or on animation frame
var currentZoom = $document.width() / window.innerWidth;
I hope this helps somebody. I spent several hours banging my mouse before finding a solution.
IN the below code you are calling the overriden method .equals().
public boolean equals2(Object object2) { if(a.equals(object2)) { // here you are calling the overriden method, that is why you getting false 2 times. return true; } else return false; }
i have tested that and it worked
val x = 9
def printType[T](x:T) :Unit = {println(x.getClass.toString())}
Just to extend the pratical scope of the question and as an appendix to the given answers: Sometimes one might find it necessary to specify the selectors a little bit more.
By defining the the full span as display:inline-block you might have a hard time displaying images.
Therefore I prefer to define a span like so:
span {
display:block;
width:150px;
word-wrap:break-word;
}
p span, a span,
h1 span, h2 span, h3 span, h4 span, h5 span {
display:inline-block;
}
img{
display:block;
}
It might be better to use communicate
:
from subprocess import Popen, PIPE, STDOUT
p = Popen(['myapp'], stdout=PIPE, stdin=PIPE, stderr=PIPE)
stdout_data = p.communicate(input='data_to_write')[0]
"Better", because of this warning:
Use communicate() rather than .stdin.write, .stdout.read or .stderr.read to avoid deadlocks due to any of the other OS pipe buffers filling up and blocking the child process.
You could use the removeAttr method, if you want to delete all the inline style you added manually with javascript. It's better to use CSS classes but you never know.
$("#displayPanel div").removeAttr("style")
if <table> <tr> <td> <div>
all have height: 100%;
set, then the div will fill the dynamic cell height in all browsers.
man your container is 40% of the width of the parent element
but when you use position:fixed, the width is based on viewport(document) width...
thinking about, i realized your parent element have 10% padding(left and right), it means your element have 80% of the total page width. so your fixed element must have 40% based on 80% of total width
so you just need to change your #fixed class to
#fixed{
position:fixed;
width: calc(80% * 0.4);
height:10px;
background-color:#333;
}
if you use sass, postcss or another css compiler, you can use variables to avoid breaking the layout when you change the padding value of parent element.
here is the updated fiddle http://jsfiddle.net/C93mk/2343/
i hope it helps, regards
use something like
$_SERVER['HTTP_REFERER'];
And if it's a successful login, display a link saying "Click here to go back" and a link to the referrer, and when the page loads, use some javascript to automatically load that page (don't use back() or whatever that function is as it won't re-load the page and it'll appear like the user never logged in.
It's probably worth noting that Groovy has this feature:
import java.util.Calendar
import com.example.Calendar as MyCalendar
MyCalendar myCalendar = new MyCalendar()
Had the same problem, regenerating application key helped - php artisan key:generate
Try this:
android:text="Lorem Ipsum \nDolor Ait Amet \nLorem Ipsum"
open your terminal then use this command
cd /Users/youruser/Library/MobileDevice/Provisioning\ Profiles/
check first inside your folder by use this command
ls
then if all files not use, delete by use this command
rm *
Use setOnItemClickListener() api in your activity. Following is the sample.
listView.setOnItemClickListener(new AdapterView.OnItemClickListener(){
@Override
public void onItemClick(AdapterView<> parent, View view, int position, long id)
{
// your code here.
}
});
You can use this syntax
python_version -m pip install your_package
For example. If you're running python3.5, you named it as "python3", and want to install numpy package
python3 -m pip install numpy
Now to make this work on chrome 66, try this:
const reloadIframe = (iframeId) => {
const el = document.getElementById(iframeId)
const src = el.src
el.src = ''
setTimeout(() => {
el.src = src
})
}
SQL Error: ORA-30926: unable to get a stable set of rows in the source tables
30926. 00000 - "unable to get a stable set of rows in the source tables"
*Cause: A stable set of rows could not be got because of large dml
activity or a non-deterministic where clause.
*Action: Remove any non-deterministic where clauses and reissue the dml.
This Error occurred for me because of duplicate records(16K)
I tried with unique it worked .
but again when I tried merge without unique same proble occurred Second time it was due to commit
after merge if commit is not done same Error will be shown.
Without unique, Query will work if commit is given after each merge operation.
Expanding on the excellent answer by @bluish and @Yishai, here is how you make the NodeLists and node attributes support iterators, i.e. the for(Node n: nodelist)
interface.
Use it like:
NodeList nl = ...
for(Node n : XmlUtil.asList(nl))
{...}
and
Node n = ...
for(Node attr : XmlUtil.asList(n.getAttributes())
{...}
The code:
/**
* Converts NodeList to an iterable construct.
* From: https://stackoverflow.com/a/19591302/779521
*/
public final class XmlUtil {
private XmlUtil() {}
public static List<Node> asList(NodeList n) {
return n.getLength() == 0 ? Collections.<Node>emptyList() : new NodeListWrapper(n);
}
static final class NodeListWrapper extends AbstractList<Node> implements RandomAccess {
private final NodeList list;
NodeListWrapper(NodeList l) {
this.list = l;
}
public Node get(int index) {
return this.list.item(index);
}
public int size() {
return this.list.getLength();
}
}
public static List<Node> asList(NamedNodeMap n) {
return n.getLength() == 0 ? Collections.<Node>emptyList() : new NodeMapWrapper(n);
}
static final class NodeMapWrapper extends AbstractList<Node> implements RandomAccess {
private final NamedNodeMap list;
NodeMapWrapper(NamedNodeMap l) {
this.list = l;
}
public Node get(int index) {
return this.list.item(index);
}
public int size() {
return this.list.getLength();
}
}
}
Bootstrap 2.3.x and later supports the dropdown-submenu
..
<ul class="dropdown-menu">
<li><a href="#">Login</a></li>
<li class="dropdown-submenu">
<a tabindex="-1" href="#">More options</a>
<ul class="dropdown-menu">
<li><a tabindex="-1" href="#">Second level</a></li>
<li><a href="#">Second level</a></li>
<li><a href="#">Second level</a></li>
</ul>
</li>
<li><a href="#">Logout</a></li>
</ul>
The werkzeug debugger already has an 'auto reload' function available that can be enabled by doing one of the following:
app.run(debug=True)
or
app.debug = True
You can also use a separate configuration file to manage all your setup if you need be. For example I use 'settings.py' with a 'DEBUG = True' option. Importing this file is easy too;
app.config.from_object('application.settings')
However this is not suitable for a production environment.
Personally I chose Nginx + uWSGI over Apache + mod_wsgi for a few performance reasons but also the configuration options. The touch-reload option allows you to specify a file/folder that will cause the uWSGI application to reload your newly deployed flask app.
For example, your update script pulls your newest changes down and touches 'reload_me.txt' file. Your uWSGI ini script (which is kept up by Supervisord - obviously) has this line in it somewhere:
touch-reload = '/opt/virtual_environments/application/reload_me.txt'
I hope this helps!
Maybe because it's harder to steal a password from your brain then to steal a key file from your computer (at least to my knowledge, maybe some substances exist already or methods but this is an infinite discussion)? And if you password protect the key, then you are using a password again and the same problems arise (but some might argue that you have to do more work, because you need to get the key and then crack the password).
Once you've got expandtab on as per the other answers, the extremely convenient way to convert existing files according to your new settings is:
:retab
It will work on the current buffer.
For Oracle For Database:
ALTER TABLE table_name MODIFY column_name VARCHAR2(255 CHAR);
The modern way (as of 2020) to add entries to a multimap (a map of lists) in Java is:
map.computeIfAbsent("apple", k -> new ArrayList<>()).add(2);
map.computeIfAbsent("apple", k -> new ArrayList<>()).add(3);
According to Map.computeIfAbsent
docs:
If the specified key is not already associated with a value (or is mapped to
null
), attempts to compute its value using the given mapping function and enters it into this map unlessnull
.Returns:
the current (existing or computed) value associated with the specified key, or null if the computed value is null
The most idiomatic way to iterate a map of lists is using Map.forEach
and Iterable.forEach
:
map.forEach((k, l) -> l.forEach(v -> /* use k and v here */));
Or, as shown in other answers, a traditional for
loop:
for (Map.Entry<String, List<Integer>> e : map.entrySet()) {
String k = e.getKey();
for (Integer v : e.getValue()) {
/* use k and v here */
}
}
With Eclipse Oxygen you can do the below things:
Maven will take them when installing the project.
Do you want to remove all items? If so, do the foreach
first, then just use Items.Clear()
to remove all of them afterwards.
Otherwise, perhaps loop backwards by indexer:
listBox1.BeginUpdate();
try {
for(int i = listBox1.Items.Count - 1; i >= 0 ; i--) {
// do with listBox1.Items[i]
listBox1.Items.RemoveAt(i);
}
} finally {
listBox1.EndUpdate();
}
You can also use this method:
<input type="text" class="@(@mvccondition ? "true-class" : "false-class")">
Try this .. Good luck Thanks.
No.
The content-type should be whatever it is known to be, if you know it. application/octet-stream
is defined as "arbitrary binary data" in RFC 2046, and there's a definite overlap here of it being appropriate for entities whose sole intended purpose is to be saved to disk, and from that point on be outside of anything "webby". Or to look at it from another direction; the only thing one can safely do with application/octet-stream is to save it to file and hope someone else knows what it's for.
You can combine the use of Content-Disposition
with other content-types, such as image/png
or even text/html
to indicate you want saving rather than display. It used to be the case that some browsers would ignore it in the case of text/html
but I think this was some long time ago at this point (and I'm going to bed soon so I'm not going to start testing a whole bunch of browsers right now; maybe later).
RFC 2616 also mentions the possibility of extension tokens, and these days most browsers recognise inline
to mean you do want the entity displayed if possible (that is, if it's a type the browser knows how to display, otherwise it's got no choice in the matter). This is of course the default behaviour anyway, but it means that you can include the filename
part of the header, which browsers will use (perhaps with some adjustment so file-extensions match local system norms for the content-type in question, perhaps not) as the suggestion if the user tries to save.
Hence:
Content-Type: application/octet-stream
Content-Disposition: attachment; filename="picture.png"
Means "I don't know what the hell this is. Please save it as a file, preferably named picture.png".
Content-Type: image/png
Content-Disposition: attachment; filename="picture.png"
Means "This is a PNG image. Please save it as a file, preferably named picture.png".
Content-Type: image/png
Content-Disposition: inline; filename="picture.png"
Means "This is a PNG image. Please display it unless you don't know how to display PNG images. Otherwise, or if the user chooses to save it, we recommend the name picture.png for the file you save it as".
Of those browsers that recognise inline
some would always use it, while others would use it if the user had selected "save link as" but not if they'd selected "save" while viewing (or at least IE used to be like that, it may have changed some years ago).
Check out querystring.
You can use it as follows:
var querystring = require('querystring');
axios.post('http://something.com/', querystring.stringify({ foo: 'bar' }));
I resolved this issue by creating ANDROID_HOME environment variable as follows in windows.
ANDROID_HOME=C:\Users\<user_name>\AppData\Local\Android\sdk
Restart Android Studio it should build project!
Go to the method in X.java, and select Open Call Hierarchy from the context menu.
Go offline
USE master
GO
ALTER DATABASE YourDatabaseName
SET OFFLINE WITH ROLLBACK IMMEDIATE
GO
Go online
USE master
GO
ALTER DATABASE YourDatabaseName
SET ONLINE
GO
you can simply use your own code but add name for the select tag
<form method="POST" action="index.php?action=contact_agent&agent_id=">
<select name="agent_id">
<option value="1">Agent Homer</option>
<option value="2">Agent Lenny</option>
<option value="3">Agent Carl</option>
</select>
then you can access it like this
String agent=request.getparameter("agent_id");
Well i can give you an example why to use something like that. Think of a game where you want to store your level and enemies in an XML file. When you parse this file, you might have an element like this.
<Enemy X="10" Y="100" Type="MyGame.OrcGuard"/>
what you can do now is, create dynamically the objects found in your level file.
foreach(XmlNode node in doc)
var enemy = Activator.CreateInstance(null, node.Attributes["Type"]);
This is very useful, for building dynamic enviroments. Of course its also possible to use this for Plugin or addin scenarios and alot more.
In General a function to return string after substring is
function getStringAfterSubstring(parentString, substring) {_x000D_
return parentString.substring(parentString.indexOf(substring) + substring.length)_x000D_
}_x000D_
_x000D_
function getStringBeforeSubstring(parentString, substring) {_x000D_
return parentString.substring(0, parentString.indexOf(substring))_x000D_
}_x000D_
console.log(getStringAfterSubstring('abcxyz123uvw', '123'))_x000D_
console.log(getStringBeforeSubstring('abcxyz123uvw', '123'))
_x000D_
The answer from stereointeractive covers all the options. Just wanted to mention an alternate way of using FTP. I'm guessing that the reason you are not allowing FTP access is for security. One way to address those security concerns is to run your FTP server listening only on 127.0.0.1
This allows you to use FTP from inside WordPress and you will be able to install plugins while not exposing it to the rest of the world. This can also be applied to other popular web applications such as Joomla! and Drupal. This is what we do with our BitNami appliances and cloud servers and works quite well.
Use
$route.reload();
remember to inject $route
to your controller.
try this:
Sub test()
With Application.WorksheetFunction
Cells(.CountA(Columns("A:A")) + 1, 1).Select
End With
End Sub
Hope this works for you.
Using this.props.children
is the idiomatic way to pass instantiated components to a react component
const Label = props => <span>{props.children}</span>
const Tab = props => <div>{props.children}</div>
const Page = () => <Tab><Label>Foo</Label></Tab>
When you pass a component as a parameter directly, you pass it uninstantiated and instantiate it by retrieving it from the props. This is an idiomatic way of passing down component classes which will then be instantiated by the components down the tree (e.g. if a component uses custom styles on a tag, but it wants to let the consumer choose whether that tag is a div
or span
):
const Label = props => <span>{props.children}</span>
const Button = props => {
const Inner = props.inner; // Note: variable name _must_ start with a capital letter
return <button><Inner>Foo</Inner></button>
}
const Page = () => <Button inner={Label}/>
If what you want to do is to pass a children-like parameter as a prop, you can do that:
const Label = props => <span>{props.content}</span>
const Tab = props => <div>{props.content}</div>
const Page = () => <Tab content={<Label content='Foo' />} />
After all, properties in React are just regular JavaScript object properties and can hold any value - be it a string, function or a complex object.
The below code works always even if any image makes the window scroll.
$(function() {
$("#demo-box").click(function(e) {
var offset = $(this).offset();
var relativeX = (e.pageX - offset.left);
var relativeY = (e.pageY - offset.top);
alert("X: " + relativeX + " Y: " + relativeY);
});
});
Ref: http://css-tricks.com/snippets/jquery/get-x-y-mouse-coordinates/
Dictionary is a key value pair. Catch Key by
dic["cat"]
and assign its value like
dic["cat"] = 5
It is simple, as a java, Android also supporting singleton. -
Singleton is a part of Gang of Four design pattern and it is categorized under creational design patterns.
-> Static member : This contains the instance of the singleton class.
-> Private constructor : This will prevent anybody else to instantiate the Singleton class.
-> Static public method : This provides the global point of access to the Singleton object and returns the instance to the client calling class.
use getInstance() of Singleton class
public class Logger{
private static Logger objLogger;
private Logger(){
//ToDo here
}
public static Logger getInstance()
{
if (objLogger == null)
{
objLogger = new Logger();
}
return objLogger;
}
}
while use singleton -
Logger.getInstance();
I know inline code is bad style, but I didn't want to put this into a .js file. Works without jQuery!
<input type="text" value="blah blah" onfocus="this.select(); this.selAll=1;" onmouseup="if(this.selAll==0) return true; this.selAll=0; return false;"></input>
your_field DATETIME NULL DEFAULT NULL
INSERT INTO x(your_field)VALUES(NULL)
limit = array.length;
for counter in 0..limit
--- make some actions ---
end
the other way to do that is the following
3.times do |n|
puts n;
end
thats will print 0, 1, 2, so could be used like array iterator also
Think that variant better fit to the author's needs
1) WebClient is a managed type, so you don't need a finalizer. The finalizer is needed in the case your users don't Dispose() of your NoGateway class and the native type (which is not collected by the GC) needs to be cleaned up after. In this case, if the user doesn't call Dispose(), the contained WebClient will be disposed by the GC right after the NoGateway does.
2) Indirectly yes, but you shouldn't have to worry about it. Your code is correct as stands and you cannot prevent your users from forgetting to Dispose() very easily.
Can't believe no one offered this shitty answer with all the rest of them. It's been deprecated for decades.
@SuppressWarnings("deprecation")
...
Date hitDate = new Date();
hitDate.setHours(0);
hitDate.setMinutes(0);
hitDate.setSeconds(0);
I had been facing this problem for two days and I found that the directory you create in Oracle also needs to created first on your physical disk.
I didn't find this point mentioned anywhere i tried to look up the solution to this.
If you created a directory, let's say, 'DB_DIR
'.
CREATE OR REPLACE DIRECTORY DB_DIR AS 'E:\DB_WORKS';
Then you need to ensure that DB_WORKS
exists in your E:\
drive and also file system level Read/Write permissions are available to the Oracle process.
My understanding of UTL_FILE from my experiences is given below for this kind of operation.
UTL_FILE is an object under SYS user. GRANT EXECUTE ON SYS.UTL_FILE TO PUBLIC; needs to given while logged in as SYS. Otherwise, it will give declaration error in procedure. Anyone can create a directory as shown:- CREATE OR REPLACE DIRECTORY DB_DIR AS 'E:\DBWORKS'; But CREATE DIRECTORY permission should be in place. This can be granted as shown:- GRANT CREATE ALL DIRECTORY TO user; while logged in as SYS user. However, if this needs to be used by another user, grants need to be given to that user otherwise it will throw error. GRANT READ, WRITE, EXECUTE ON DB_DIR TO user; while loggedin as the user who created the directory. Then, compile your package. Before executing the procedure, ensure that the Directory exists physically on your Disk. Otherwise it will throw 'Invalid File Operation' error. (V. IMPORTANT) Ensure that Filesystem level Read/Write permissions are in place for the Oracle process. This is separate from the DB level permissions granted.(V. IMPORTANT) Execute procedure. File should get populated with the result set of your query.
SELECT
MyParts.*,MyPriceDate.Price,MyPriceDate.PriceDate
FROM MyParts
INNER JOIN (SELECT Partid, MAX(PriceDate) AS MaxPriceDate FROM MyPrice GROUP BY Partid) dt ON MyParts.Partid = dt.Partid
INNER JOIN MyPrice ON dt.Partid = MyPrice.Partid AND MyPrice.PriceDate=dt.MaxPriceDate
For many use cases, the answer you want is:
ys = set(y)
[item for item in x if item not in ys]
This is a hybrid between aaronasterling's answer and quantumSoup's answer.
aaronasterling's version does len(y)
item comparisons for each element in x
, so it takes quadratic time. quantumSoup's version uses sets, so it does a single constant-time set lookup for each element in x
—but, because it converts both x
and y
into sets, it loses the order of your elements.
By converting only y
into a set, and iterating x
in order, you get the best of both worlds—linear time, and order preservation.*
However, this still has a problem from quantumSoup's version: It requires your elements to be hashable. That's pretty much built into the nature of sets.** If you're trying to, e.g., subtract a list of dicts from another list of dicts, but the list to subtract is large, what do you do?
If you can decorate your values in some way that they're hashable, that solves the problem. For example, with a flat dictionary whose values are themselves hashable:
ys = {tuple(item.items()) for item in y}
[item for item in x if tuple(item.items()) not in ys]
If your types are a bit more complicated (e.g., often you're dealing with JSON-compatible values, which are hashable, or lists or dicts whose values are recursively the same type), you can still use this solution. But some types just can't be converted into anything hashable.
If your items aren't, and can't be made, hashable, but they are comparable, you can at least get log-linear time (O(N*log M)
, which is a lot better than the O(N*M)
time of the list solution, but not as good as the O(N+M)
time of the set solution) by sorting and using bisect
:
ys = sorted(y)
def bisect_contains(seq, item):
index = bisect.bisect(seq, item)
return index < len(seq) and seq[index] == item
[item for item in x if bisect_contains(ys, item)]
If your items are neither hashable nor comparable, then you're stuck with the quadratic solution.
* Note that you could also do this by using a pair of OrderedSet
objects, for which you can find recipes and third-party modules. But I think this is simpler.
** The reason set lookups are constant time is that all it has to do is hash the value and see if there's an entry for that hash. If it can't hash the value, this won't work.
You can use the sp_helpindex
to view all the indexes of one table.
EXEC sys.sp_helpindex @objname = N'User' -- nvarchar(77)
And for all the indexes, you can traverse sys.objects
to get all the indexes for each table.
Create two partial indexes:
CREATE UNIQUE INDEX favo_3col_uni_idx ON favorites (user_id, menu_id, recipe_id)
WHERE menu_id IS NOT NULL;
CREATE UNIQUE INDEX favo_2col_uni_idx ON favorites (user_id, recipe_id)
WHERE menu_id IS NULL;
This way, there can only be one combination of (user_id, recipe_id)
where menu_id IS NULL
, effectively implementing the desired constraint.
Possible drawbacks: you cannot have a foreign key referencing (user_id, menu_id, recipe_id)
, you cannot base CLUSTER
on a partial index, and queries without a matching WHERE
condition cannot use the partial index. (It seems unlikely you'd want a FK reference three columns wide - use the PK column instead).
If you need a complete index, you can alternatively drop the WHERE
condition from favo_3col_uni_idx
and your requirements are still enforced.
The index, now comprising the whole table, overlaps with the other one and gets bigger. Depending on typical queries and the percentage of NULL
values, this may or may not be useful. In extreme situations it might even help to maintain all three indexes (the two partial ones and a total on top).
Aside: I advise not to use mixed case identifiers in PostgreSQL.
Use this code between two words:
& vbCrLf &
Using this, the next word displays on the next line.
I formerly voted to close this question as off-topic but actually I changed my mind as this is quite nice visual effect which, unfortunately, is not yet part of support library. It will most likely show up in future update, but there's no time frame announced.
Luckily there are few custom implementations already available:
including Materlial themed widget sets compatible with older versions of Android:
so you can try one of these or google for other "material widgets" or so...
You can try the code below:
# Load the packages required to read XML files.
library("XML")
library("methods")
# Convert the input xml file to a data frame.
xmldataframe <- xmlToDataFrame("input.xml")
print(xmldataframe)
stage.setOnCloseRequest(new EventHandler<WindowEvent>() {
public void handle(WindowEvent we) {
Platform.setImplicitExit(false);
stage.close();
}
});
It is equivalent to hide
. So when you are going to open it next time, you just check if the stage
object is exited or not. If it is exited, you just show()
i.e. (stage.show())
call. Otherwise, you have to start the stage.
Element.style
MDNvar toggle = document.getElementById("toggle");
var content = document.getElementById("content");
toggle.addEventListener("click", function() {
content.style.display = (content.dataset.toggled ^= 1) ? "block" : "none";
});
_x000D_
#content{
display:none;
}
_x000D_
<button id="toggle">TOGGLE</button>
<div id="content">Some content...</div>
_x000D_
About the ^
bitwise XOR as I/O toggler
https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/dataset
.classList.toggle()
var toggle = document.getElementById("toggle");
var content = document.getElementById("content");
toggle.addEventListener("click", function() {
content.classList.toggle("show");
});
_x000D_
#content{
display:none;
}
#content.show{
display:block; /* P.S: Use `!important` if missing `#content` (selector specificity). */
}
_x000D_
<button id="toggle">TOGGLE</button>
<div id="content">Some content...</div>
_x000D_
.toggle()
Docs; .fadeToggle()
Docs; .slideToggle()
Docs$("#toggle").on("click", function(){
$("#content").toggle(); // .fadeToggle() // .slideToggle()
});
_x000D_
#content{
display:none;
}
_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<button id="toggle">TOGGLE</button>
<div id="content">Some content...</div>
_x000D_
.toggleClass()
Docs.toggle()
toggles an element's display
"block"/"none"
values
$("#toggle").on("click", function(){
$("#content").toggleClass("show");
});
_x000D_
#content{
display:none;
}
#content.show{
display:block; /* P.S: Use `!important` if missing `#content` (selector specificity). */
}
_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<button id="toggle">TOGGLE</button>
<div id="content">Some content...</div>
_x000D_
<summary>
and <details>
(unsupported on IE and Opera Mini)
<details>
<summary>TOGGLE</summary>
<p>Some content...</p>
</details>
_x000D_
checkbox
[id^=toggle],
[id^=toggle] + *{
display:none;
}
[id^=toggle]:checked + *{
display:block;
}
_x000D_
<label for="toggle-1">TOGGLE</label>
<input id="toggle-1" type="checkbox">
<div>Some content...</div>
_x000D_
radio
[id^=switch],
[id^=switch] + *{
display:none;
}
[id^=switch]:checked + *{
display:block;
}
_x000D_
<label for="switch-1">SHOW 1</label>
<label for="switch-2">SHOW 2</label>
<input id="switch-1" type="radio" name="tog">
<div>1 Merol Muspi...</div>
<input id="switch-2" type="radio" name="tog">
<div>2 Lorem Ipsum...</div>
_x000D_
:target
(just to make sure you have it in your arsenal)
[id^=switch] + *{
display:none;
}
[id^=switch]:target + *{
display:block;
}
_x000D_
<a href="#switch1">SHOW 1</a>
<a href="#switch2">SHOW 2</a>
<i id="switch1"></i>
<div>1 Merol Muspi ...</div>
<i id="switch2"></i>
<div>2 Lorem Ipsum...</div>
_x000D_
If you pick one of JS / jQuery way to actually toggle a className
, you can always add animated transitions to your element, here's a basic example:
var toggle = document.getElementById("toggle");
var content = document.getElementById("content");
toggle.addEventListener("click", function(){
content.classList.toggle("appear");
}, false);
_x000D_
#content{
/* DON'T USE DISPLAY NONE/BLOCK! Instead: */
background: #cf5;
padding: 10px;
position: absolute;
visibility: hidden;
opacity: 0;
transition: 0.6s;
-webkit-transition: 0.6s;
transform: translateX(-100%);
-webkit-transform: translateX(-100%);
}
#content.appear{
visibility: visible;
opacity: 1;
transform: translateX(0);
-webkit-transform: translateX(0);
}
_x000D_
<button id="toggle">TOGGLE</button>
<div id="content">Some Togglable content...</div>
_x000D_
Just for completeness, since MySQL and Postgres have already been mentioned: With SQLite, use "pragma table_info()
"
sqlite> pragma table_info('table_name');
cid name type notnull dflt_value pk
---------- ---------- ---------- ---------- ---------- ----------
0 id integer 99 1
1 name 0 0
In my case ,I just needed to add a dummy .ts file.So I created a test.ts file with no contents and ran npm start to solve the problem.
I believe the following pdf will give you the bigger picture. Domain Driven Design by Eric Evans
NOTE: Think of a project you can work on, apply the little things you understood and see best practices. It will help you to grow your ability to the micro service architecture design approach too.
It's a GNU extension. In a nutshell it's a convenient way to declare an object having the same type as another. For example:
int x; /* Plain old int variable. */
typeof(x) y; /* Same type as x. Plain old int variable. */
It works entirely at compile-time and it's primarily used in macros. One famous example of macro relying on typeof
is container_of
.
Actually, to properly support sorting, filtering, etc. a CollectionViewSource should be used as a link between the DataGrid and the list, like this:
<Window.Resources>
<CollectionViewSource x:Key="ItemCollectionViewSource" CollectionViewType="ListCollectionView"/>
</Window.Resources>
The DataGrid line looks like this:
<DataGrid
DataContext="{StaticResource ItemCollectionViewSource}"
ItemsSource="{Binding}"
AutoGenerateColumns="False">
In the code behind, you link CollectionViewSource with your link.
CollectionViewSource itemCollectionViewSource;
itemCollectionViewSource = (CollectionViewSource)(FindResource("ItemCollectionViewSource"));
itemCollectionViewSource.Source = itemList;
For detailed example see my article on CoedProject: http://www.codeproject.com/Articles/683429/Guide-to-WPF-DataGrid-formatting-using-bindings
Follow the steps:
User needs to right click on the row to get this menu. We need to handle the _MouseClick event and _CellMouseDown event.
selectedBiodataid is the variable that contains the selected row information.
Here is the code:
private void dgrdResults_MouseClick(object sender, MouseEventArgs e)
{
if (e.Button == System.Windows.Forms.MouseButtons.Right)
{
contextMenuStrip1.Show(Cursor.Position.X, Cursor.Position.Y);
}
}
private void dgrdResults_CellMouseDown(object sender, DataGridViewCellMouseEventArgs e)
{
//handle the row selection on right click
if (e.Button == MouseButtons.Right)
{
try
{
dgrdResults.CurrentCell = dgrdResults.Rows[e.RowIndex].Cells[e.ColumnIndex];
// Can leave these here - doesn't hurt
dgrdResults.Rows[e.RowIndex].Selected = true;
dgrdResults.Focus();
selectedBiodataId = Convert.ToInt32(dgrdResults.Rows[e.RowIndex].Cells[1].Value);
}
catch (Exception)
{
}
}
}
and the output would be:
ES 2017 example:
let objectToCopy = someObj;
let copyOfObject = {};
Object.defineProperties(copyOfObject, Object.getOwnPropertyDescriptors(objectToCopy));
// copyOfObject will now be the same as objectToCopy
You didn't say what's currently your .gitignore
, but a .gitignore
with the following contents in your root directory should do the trick.
.metadata
build
You also can do this very easily with awk
, if you're willing to consider a different tool:
echo "UPPER" | awk '{print tolower($0)}'
To test whether or not you have a odd or even number, this also works.
const comapare = x => integer(checkNumber(x));
function checkNumber (x) {
if (x % 2 == 0) {
return true;
}
else if (x % 2 != 0) {
return false;
}
}
function integer (x) {
if (x) {
console.log('even');
}
else {
console.log('odd');
}
}
System scope was only designed to deal with 'system' files; files sitting in some fixed location. Files in /usr/lib
, or ${java.home}
(e.g. tools.jar
). It wasn't designed to support miscellaneous .jar
files in your project.
The authors intentionally refused to make the pathname expansions work right for that to discourage you. As a result, in the short term you can use install:install-file
to install into the local repo, and then some day use a repo manager to share.
HTML4/XHTML1 requires
<script type="...">...</script>
HTML5 faces the fact that there is only one scripting language on the web, and allows
<script>...</script>
The latter works in any browser that supports scripting (NN2+).
Suppose you want to print the SQL query of the following statements.
$user = User::find(5);
You just need to do as follows:
DB::enableQueryLog();//enable query logging
$user = User::find(5);
print_r(DB::getQueryLog());//print sql query
This will print the last executed query in Laravel.
You can use Gson
.
Step 1
Add compile
compile 'com.google.code.gson:gson:2.8.2'
Step 2
Convert json to Kotlin Bean
(use JsonToKotlinClass)
Like this
Json
data
{
"timestamp": "2018-02-13 15:45:45",
"code": "OK",
"message": "user info",
"path": "/user/info",
"data": {
"userId": 8,
"avatar": "/uploads/image/20180115/1516009286213053126.jpeg",
"nickname": "",
"gender": 0,
"birthday": 1525968000000,
"age": 0,
"province": "",
"city": "",
"district": "",
"workStatus": "Student",
"userType": 0
},
"errorDetail": null
}
Kotlin Bean
class MineUserEntity {
data class MineUserInfo(
val timestamp: String,
val code: String,
val message: String,
val path: String,
val data: Data,
val errorDetail: Any
)
data class Data(
val userId: Int,
val avatar: String,
val nickname: String,
val gender: Int,
val birthday: Long,
val age: Int,
val province: String,
val city: String,
val district: String,
val workStatus: String,
val userType: Int
)
}
Step 3
Use Gson
var gson = Gson()
var mMineUserEntity = gson?.fromJson(response, MineUserEntity.MineUserInfo::class.java)
Let's say you have a cell with a subview, and you want the cell's height to be high enough to encompass the subview + padding.
1) Set the subview's bottom constraint equal to the cell.contentView minus the padding you want. Do not set constraints on the cell or cell.contentView itself.
2) Set either the tableView's rowHeight
property or tableView:heightForRowAtIndexPath:
to UITableViewAutomaticDimension
.
3) Set either the tableView's estimatedRowHeight
property or tableView:estimatedHeightForRowAtIndexPath:
to a best guess of the height.
That's it.
As of jQuery 1.6 you should now call prop:
$target.prop("tagName")
Use Activity.getWindow()
to get the window of your activity; use Window.addFlags()
to add whichever of the following flags in WindowManager.LayoutParams
that you desire:
If we want difference without the time you can get the date different (only date without time) like below, using moment's format.
As, I was facing issue with the difference while doing ;
moment().diff([YOUR DATE])
So, came up with following;
const dateValidate = moment(moment().format('YYYY-MM-DD')).diff(moment([YOUR SELECTED DATE HERE]).format('YYYY-MM-DD'))
IF dateValidate > 0
//it's past day
else
//it's current or future
Please feel free to comment if there's anything to improve on.
Thanks,
There is yet another simpler way to get table names
SHOW TABLES FROM <database_name>
this example, I am assuming that all your image files begin with "IMG" and you want to replace "IMG" with "VACATION"
solution : first identified all jpg files and then replace keyword
find . -name '*jpg' -exec bash -c 'echo mv $0 ${0/IMG/VACATION}' {} \;
Prompt for user input.
https://www.youtube.com/watch?v=NIGhjrWLWBo
shows how to do this for C++. For Node.js, this is taken right from the docs (and it works):
'use strict';
console.log('Hello world');
const readline = require('readline');
const rl = readline.createInterface({
input: process.stdin,
output: process.stdout
});
rl.question('Press enter to continue...', (answer) => {
rl.close(); /* discard the answer */
});
While it's not currently possible with the script
tag, it is possible with an iframe
if it's from the same domain.
<iframe
id="mySpecialId"
src="/my/link/to/some.json"
onload="(()=>{if(!window.jsonData){window.jsonData={}}try{window.jsonData[this.id]=JSON.parse(this.contentWindow.document.body.textContent.trim())}catch(e){console.warn(e)}this.remove();})();"
onerror="((err)=>console.warn(err))();"
style="display: none;"
></iframe>
To use the above, simply replace the id
and src
attribute with what you need. The id
(which we'll assume in this situation is equal to mySpecialId
) will be used to store the data in window.jsonData["mySpecialId"]
.
In other words, for every iframe that has an id
and uses the onload
script will have that data synchronously loaded into the window.jsonData
object under the id
specified.
I did this for fun and to show that it's "possible' but I do not recommend that it be used.
Here is an alternative that uses a callback instead.
<script>
function someCallback(data){
/** do something with data */
console.log(data);
}
function jsonOnLoad(callback){
const raw = this.contentWindow.document.body.textContent.trim();
try {
const data = JSON.parse(raw);
/** do something with data */
callback(data);
}catch(e){
console.warn(e.message);
}
this.remove();
}
</script>
<!-- I frame with src pointing to json file on server, onload we apply "this" to have the iframe context, display none as we don't want to show the iframe -->
<iframe src="your/link/to/some.json" onload="jsonOnLoad.apply(this, someCallback)" style="display: none;"></iframe>
Tested in chrome and should work in firefox. Unsure about IE or Safari.
If your grep -i does not work then try using tr command to convert the the output of your file to lower case and then pipe it into standard grep with whatever you are looking for. (it sounds complicated but the actual command which I have provided for you is not !).
Notice the tr command does not change the content of your original file, it just converts it just before it feeds it into grep.
1.here is how you can do this on a file
tr '[:upper:]' '[:lower:]' <your_file.txt|grep what_ever_you_are_searching_in_lower_case
2.or in your case if you are just echoing something
echo "ABC"|tr '[:upper:]' '[:lower:]' | grep abc
I had the same problem. I installed Eclipse 3.7 into a new folder, and created a new workspace. I launch Eclipse with a -data argument to reference the new workspace.
When I attempt to connect to the marketplace to get the SVN and Maven plugins, I get the same issues described in OP.
After a few more tries, I cleared the proxy settings for SOCKS protocol, and I was able to connect to the marketplace.
So the solution for me was to configure the manual settings for HTTP and HTTPS proxy, clear the settings for SOCKS, and restart Eclipse.
3x the same plot with differnt y-labeling
Minimal example
import numpy as np
import matplotlib as mpl
import matplotlib.pylab as plt
from matplotlib.ticker import FormatStrFormatter
fig, axs = mpl.pylab.subplots(1, 3)
xs = np.arange(10)
ys = 1 + xs ** 2 * 1e-3
axs[0].set_title('default y-labeling')
axs[0].scatter(xs, ys)
axs[1].set_title('custom y-labeling')
axs[1].scatter(xs, ys)
axs[2].set_title('x, pos arguments')
axs[2].scatter(xs, ys)
fmt = lambda x, pos: '1+ {:.0f}e-3'.format((x-1)*1e3, pos)
axs[1].yaxis.set_major_formatter(mpl.ticker.FuncFormatter(fmt))
fmt = lambda x, pos: 'x={:f}\npos={:f}'.format(x, pos)
axs[2].yaxis.set_major_formatter(mpl.ticker.FuncFormatter(fmt))
You can also use 'real'-functions instead of lambdas, of course. https://matplotlib.org/3.1.1/gallery/ticks_and_spines/tick-formatters.html
The correct way to change directories is actually with process.chdir(directory)
. Here's an example from the documentation:
console.log('Starting directory: ' + process.cwd());
try {
process.chdir('/tmp');
console.log('New directory: ' + process.cwd());
}
catch (err) {
console.log('chdir: ' + err);
}
This is also testable in the Node.js REPL:
[monitor@s2 ~]$ node
> process.cwd()
'/home/monitor'
> process.chdir('../');
undefined
> process.cwd();
'/home'
I have discovered that you cannot have conditionals outside of the stored procedure in mysql. This is why the syntax error. As soon as I put the code that I needed between
BEGIN
SELECT MONTH(CURDATE()) INTO @curmonth;
SELECT MONTHNAME(CURDATE()) INTO @curmonthname;
SELECT DAY(LAST_DAY(CURDATE())) INTO @totaldays;
SELECT FIRST_DAY(CURDATE()) INTO @checkweekday;
SELECT DAY(@checkweekday) INTO @checkday;
SET @daycount = 0;
SET @workdays = 0;
WHILE(@daycount < @totaldays) DO
IF (WEEKDAY(@checkweekday) < 5) THEN
SET @workdays = @workdays+1;
END IF;
SET @daycount = @daycount+1;
SELECT ADDDATE(@checkweekday, INTERVAL 1 DAY) INTO @checkweekday;
END WHILE;
END
Just for others:
If you are not sure how to create a routine in phpmyadmin you can put this in the SQL query
delimiter ;;
drop procedure if exists test2;;
create procedure test2()
begin
select ‘Hello World’;
end
;;
Run the query. This will create a stored procedure or stored routine named test2. Now go to the routines tab and edit the stored procedure to be what you want. I also suggest reading http://net.tutsplus.com/tutorials/an-introduction-to-stored-procedures/ if you are beginning with stored procedures.
The first_day function you need is: How to get first day of every corresponding month in mysql?
Showing the Procedure is working Simply add the following line below END WHILE and above END
SELECT @curmonth,@curmonthname,@totaldays,@daycount,@workdays,@checkweekday,@checkday;
Then use the following code in the SQL Query Window.
call test2 /* or whatever you changed the name of the stored procedure to */
NOTE: If you use this please keep in mind that this code does not take in to account nationally observed holidays (or any holidays for that matter).
based on examples above and examples found on other sites, I created a generic procedure and some examples.
'Simple helper procedure to create a dropdown in a cell based on a list of values in a range
'ValueSheetName : the name of the sheet containing the value range
'ValueRangeString : the range on the sheet with name ValueSheetName containing the values for the dropdown
'CreateOnSheetName : the name of the sheet where the dropdown needs to be created
'CreateInRangeString : the range where the dropdown needs to be created
'FieldName As String : a name of the dropdown, will be used in the inputMessage and ErrorMessage
'See example below ExampleCreateDropDown
Public Sub CreateDropDown(ValueSheetName As String, ValueRangeString As String, CreateOnSheetName As String, CreateInRangeString As String, FieldName As String)
Dim ValueSheet As Worksheet
Set ValueSheet = Worksheets(ValueSheetName) 'The sheet containing the values
Dim ValueRange As Range: Set ValueRange = ValueSheet.Range(ValueRangeString) 'The range containing the values
Dim CreateOnSheet As Worksheet
Set CreateOnSheet = Worksheets(CreateOnSheetName) 'The sheet containing the values
Dim CreateInRange As Range: Set CreateInRange = CreateOnSheet.Range(CreateInRangeString)
Dim InputTitle As String: InputTitle = "Please Select a Value"
Dim InputMessage As String: InputMessage = "for " & FieldName
Dim ErrorTitle As String: ErrorTitle = "Please Select a Value"
Dim ErrorMessage As String: ErrorMessage = "for " & FieldName
Dim ShowInput As Boolean: ShowInput = True 'Show input message on hover
Dim ShowError As Boolean: ShowError = True 'Show error message on error
Dim ValidationType As XlDVType: ValidationType = xlValidateList
Dim ValidationAlertStyle As XlDVAlertStyle: ValidationAlertStyle = xlValidAlertStop 'Stop on invalid value
Dim ValidationOperator As XlFormatConditionOperator: ValidationOperator = xlEqual 'Value must be equal to one of the Values from the ValidationFormula1
Dim ValidationFormula1 As Variant: ValidationFormula1 = "=" & ValueSheetName & "!" & ValueRange.Address 'Formula referencing the values from the ValueRange
Dim ValidationFormula2 As Variant: ValidationFormula2 = ""
Call CreateDropDownWithValidationInCell(CreateInRange, InputTitle, InputMessage, ErrorTitle, ErrorMessage, ShowInput, ShowError, ValidationType, ValidationAlertStyle, ValidationOperator, ValidationFormula1, ValidationFormula2)
End Sub
'An example using the ExampleCreateDropDown
Private Sub ExampleCreateDropDown()
Call CreateDropDown(ValueSheetName:="Test", ValueRangeString:="C1:C5", CreateOnSheetName:="Test", CreateInRangeString:="B1", FieldName:="test2")
End Sub
'The full option function if you need more configurable options
'To create a dropdown in a cell based on a list of values in a range
'Validation: https://msdn.microsoft.com/en-us/library/office/ff840078.aspx
'ValidationTypes: XlDVType https://msdn.microsoft.com/en-us/library/office/ff840715.aspx
'ValidationAlertStyle: XlDVAlertStyle https://msdn.microsoft.com/en-us/library/office/ff841223.aspx
'XlFormatConditionOperator https://msdn.microsoft.com/en-us/library/office/ff840923.aspx
'See example below ExampleCreateDropDownWithValidationInCell
Public Sub CreateDropDownWithValidationInCell(CreateInRange As Range, _
Optional InputTitle As String = "", _
Optional InputMessage As String = "", _
Optional ErrorTitle As String = "", _
Optional ErrorMessage As String = "", _
Optional ShowInput As Boolean = True, _
Optional ShowError As Boolean = True, _
Optional ValidationType As XlDVType = xlValidateList, _
Optional ValidationAlertStyle As XlDVAlertStyle = xlValidAlertStop, _
Optional ValidationOperator As XlFormatConditionOperator = xlEqual, _
Optional ValidationFormula1 As Variant = "", _
Optional ValidationFormula2 As Variant = "")
With CreateInRange.Validation
.Delete
.Add Type:=ValidationType, AlertStyle:=ValidationAlertStyle, Operator:=ValidationOperator, Formula1:=ValidationFormula1, Formula2:=ValidationFormula2
.IgnoreBlank = True
.InCellDropdown = True
.InputTitle = InputTitle
.ErrorTitle = ErrorTitle
.InputMessage = InputMessage
.ErrorMessage = ErrorMessage
.ShowInput = ShowInput
.ShowError = ShowError
End With
End Sub
'An example using the CreateDropDownWithValidationInCell
Private Sub ExampleCreateDropDownWithValidationInCell()
Dim ValueSheetName As String: ValueSheetName = "Hidden" 'The sheet containing the values
Dim ValueRangeString As String: ValueRangeString = "C7:C9" 'The range containing the values
Dim CreateOnSheetName As String: CreateOnSheetName = "Test" 'The sheet containing the dropdown
Dim CreateInRangeString As String: CreateInRangeString = "A1" 'The range containing the dropdown
Dim ValueSheet As Worksheet
Set ValueSheet = Worksheets(ValueSheetName)
Dim ValueRange As Range: Set ValueRange = ValueSheet.Range(ValueRangeString)
Dim CreateOnSheet As Worksheet
Set CreateOnSheet = Worksheets(CreateOnSheetName)
Dim CreateInRange As Range: Set CreateInRange = CreateOnSheet.Range(CreateInRangeString)
Dim FieldName As String: FieldName = "Testing Dropdown"
Dim InputTitle As String: InputTitle = "Please Select a value"
Dim InputMessage As String: InputMessage = "for " & FieldName
Dim ErrorTitle As String: ErrorTitle = "Please Select a value"
Dim ErrorMessage As String: ErrorMessage = "for " & FieldName
Dim ShowInput As Boolean: ShowInput = True
Dim ShowError As Boolean: ShowError = True
Dim ValidationType As XlDVType: ValidationType = xlValidateList
Dim ValidationAlertStyle As XlDVAlertStyle: ValidationAlertStyle = xlValidAlertStop
Dim ValidationOperator As XlFormatConditionOperator: ValidationOperator = xlEqual
Dim ValidationFormula1 As Variant: ValidationFormula1 = "=" & ValueSheetName & "!" & ValueRange.Address
Dim ValidationFormula2 As Variant: ValidationFormula2 = ""
Call CreateDropDownWithValidationInCell(CreateInRange, InputTitle, InputMessage, ErrorTitle, ErrorMessage, ShowInput, ShowError, ValidationType, ValidationAlertStyle, ValidationOperator, ValidationFormula1, ValidationFormula2)
End Sub
Here's my efficient approach for displaying 2-D integer array using a StringBuilder array.
public static void printMatrix(int[][] arr) {
if (null == arr || arr.length == 0) {
// empty or null matrix
return;
}
int idx = -1;
StringBuilder[] sbArr = new StringBuilder[arr.length];
for (int[] row : arr) {
sbArr[++idx] = new StringBuilder("(\t");
for (int elem : row) {
sbArr[idx].append(elem + "\t");
}
sbArr[idx].append(")");
}
for (int i = 0; i < sbArr.length; i++) {
System.out.println(sbArr[i]);
}
System.out.println("\nDONE\n");
}
If you're looking for an HTML only way of doing this in angular...
<div #myDiv class="my_class" (click)="myDiv.classList.toggle('active')">
Some content
</div>
The important bit is the #myDiv
part.
It's a HTML Node reference, so you can use that variable as if it was assigned to document.querySelector('.my_class')
NOTE: this variable is scope specific, so you can use it in *ngFor
statements
If anyone is looking to do it in Java 8 streams below is the example.
import java.util.HashMap;
import java.util.Map;
public class CompareTwoMaps {
public static void main(String[] args) {
Map<String, String> a = new HashMap<>();
a.put("foo", "bar" + "bar");
a.put("zoo", "bar" + "bar");
Map<String, String> b = new HashMap<>();
b.put(new String("foo"), "bar" + "bar");
b.put(new String("zoo"), "bar" + "bar");
System.out.println("result = " + areEqual(a, b));
}
private static boolean areEqual(Map<String, String> first, Map<String, String> second) {
return first.entrySet().stream()
.allMatch(e -> e.getValue().equals(second.get(e.getKey())));
}
}
If try-except-finally is nested inside a finally block, the result from "child" finally is preserved. I have not found an official explanation yet, but the following code snippet shows this behavior in Python 3.6.
def f2():
try:
a = 4
raise SyntaxError
except SyntaxError as se:
print('log SE')
raise se from None
finally:
try:
raise ValueError
except ValueError as ve:
a = 5
print('log VE')
raise ve from None
finally:
return 6
return a
In [1]: f2()
log SE
log VE
Out[2]: 6
As has been said, datetime has no format/string representational format.
You can change the string output with some formatting.
To convert your string to a datetime:
declare @date nvarchar(25)
set @date = '2011-09-28 18:01:00'
-- To datetime datatype
SELECT CONVERT(datetime, @date)
Gives:
-----------------------
2011-09-28 18:01:00.000
(1 row(s) affected)
To convert that to the string you want:
-- To VARCHAR of your desired format
SELECT CONVERT(VARCHAR(10), CONVERT(datetime, @date), 105) +' '+ CONVERT(VARCHAR(8), CONVERT(datetime, @date), 108)
Gives:
-------------------
28-09-2011 18:01:00
(1 row(s) affected)
TagLib Sharp is pretty popular.
As a side note, if you wanted to take a quick and dirty peek at doing it yourself.. here is a C# snippet I found to read an mp3's tag info.
class MusicID3Tag
{
public byte[] TAGID = new byte[3]; // 3
public byte[] Title = new byte[30]; // 30
public byte[] Artist = new byte[30]; // 30
public byte[] Album = new byte[30]; // 30
public byte[] Year = new byte[4]; // 4
public byte[] Comment = new byte[30]; // 30
public byte[] Genre = new byte[1]; // 1
}
string filePath = @"C:\Documents and Settings\All Users\Documents\My Music\Sample Music\041105.mp3";
using (FileStream fs = File.OpenRead(filePath))
{
if (fs.Length >= 128)
{
MusicID3Tag tag = new MusicID3Tag();
fs.Seek(-128, SeekOrigin.End);
fs.Read(tag.TAGID, 0, tag.TAGID.Length);
fs.Read(tag.Title, 0, tag.Title.Length);
fs.Read(tag.Artist, 0, tag.Artist.Length);
fs.Read(tag.Album, 0, tag.Album.Length);
fs.Read(tag.Year, 0, tag.Year.Length);
fs.Read(tag.Comment, 0, tag.Comment.Length);
fs.Read(tag.Genre, 0, tag.Genre.Length);
string theTAGID = Encoding.Default.GetString(tag.TAGID);
if (theTAGID.Equals("TAG"))
{
string Title = Encoding.Default.GetString(tag.Title);
string Artist = Encoding.Default.GetString(tag.Artist);
string Album = Encoding.Default.GetString(tag.Album);
string Year = Encoding.Default.GetString(tag.Year);
string Comment = Encoding.Default.GetString(tag.Comment);
string Genre = Encoding.Default.GetString(tag.Genre);
Console.WriteLine(Title);
Console.WriteLine(Artist);
Console.WriteLine(Album);
Console.WriteLine(Year);
Console.WriteLine(Comment);
Console.WriteLine(Genre);
Console.WriteLine();
}
}
}
Try the file
command with -i
option.
-i
option Causes the file command to output mime type strings rather than the more traditional human readable ones. Thus it may say text/plain; charset=us-ascii
rather than ASCII text
.
To quote the documentation:
Key words and unquoted identifiers are case insensitive. Therefore:
UPDATE MY_TABLE SET A = 5;
can equivalently be written as:
uPDaTE my_TabLE SeT a = 5;
You could also write it using quoted identifiers:
UPDATE "my_table" SET "a" = 5;
Quoting an identifier makes it case-sensitive, whereas unquoted names are always folded to lower case (unlike the SQL standard where unquoted names are folded to upper case). For example, the identifiers FOO
, foo
, and "foo"
are considered the same by PostgreSQL, but "Foo"
and "FOO"
are different from these three and each other.
If you want to write portable applications you are advised to always quote a particular name or never quote it.
For an array of strings to a comma-separated string:
let months = ["January","Feb"];
let monthsString = months.join(", ");
You can use this method to log the exception stack to String
public String stackTraceToString(Throwable e) {
StringBuilder sb = new StringBuilder();
for (StackTraceElement element : e.getStackTrace()) {
sb.append(element.toString());
sb.append("\n");
}
return sb.toString();
}
tableColumns
null
for all columns as in SELECT * FROM ...
new String[] { "column1", "column2", ... }
for specific columns as in SELECT column1, column2 FROM ...
- you can also put complex expressions here:new String[] { "(SELECT max(column1) FROM table1) AS max" }
would give you a column named max
holding the max value of column1
whereClause
WHERE
without that keyword, e.g. "column1 > 5"
?
for things that are dynamic, e.g. "column1=?"
-> see whereArgs
whereArgs
?
in whereClause
in the order they appearthe others
whereClause
the statement after the keyword or null
if you don't use it.Example
String[] tableColumns = new String[] {
"column1",
"(SELECT max(column1) FROM table2) AS max"
};
String whereClause = "column1 = ? OR column1 = ?";
String[] whereArgs = new String[] {
"value1",
"value2"
};
String orderBy = "column1";
Cursor c = sqLiteDatabase.query("table1", tableColumns, whereClause, whereArgs,
null, null, orderBy);
// since we have a named column we can do
int idx = c.getColumnIndex("max");
is equivalent to the following raw query
String queryString =
"SELECT column1, (SELECT max(column1) FROM table1) AS max FROM table1 " +
"WHERE column1 = ? OR column1 = ? ORDER BY column1";
sqLiteDatabase.rawQuery(queryString, whereArgs);
By using the Where/Bind -Args version you get automatically escaped values and you don't have to worry if input-data contains '
.
Unsafe: String whereClause = "column1='" + value + "'";
Safe: String whereClause = "column1=?";
because if value contains a '
your statement either breaks and you get exceptions or does unintended things, for example value = "XYZ'; DROP TABLE table1;--"
might even drop your table since the statement would become two statements and a comment:
SELECT * FROM table1 where column1='XYZ'; DROP TABLE table1;--'
using the args version XYZ'; DROP TABLE table1;--
would be escaped to 'XYZ''; DROP TABLE table1;--'
and would only be treated as a value. Even if the '
is not intended to do bad things it is still quite common that people have it in their names or use it in texts, filenames, passwords etc. So always use the args version. (It is okay to build int
and other primitives directly into whereClause
though)
TRUE
and FALSE
are keywords, and should not be quoted as strings:
INSERT INTO first VALUES (NULL, 'G22', TRUE);
INSERT INTO first VALUES (NULL, 'G23', FALSE);
By quoting them as strings, MySQL will then cast them to their integer equivalent (since booleans are really just a one-byte INT
in MySQL), which translates into zero for any non-numeric string. Thus, you get 0
for both values in your table.
mysql> SELECT CAST('TRUE' AS SIGNED), CAST('FALSE' AS SIGNED), CAST('12345' AS SIGNED);
+------------------------+-------------------------+-------------------------+
| CAST('TRUE' AS SIGNED) | CAST('FALSE' AS SIGNED) | CAST('12345' AS SIGNED) |
+------------------------+-------------------------+-------------------------+
| 0 | 0 | 12345 |
+------------------------+-------------------------+-------------------------+
INT
representation:mysql> SELECT TRUE, FALSE;
+------+-------+
| TRUE | FALSE |
+------+-------+
| 1 | 0 |
+------+-------+
Note also, that I have replaced your double-quotes with single quotes as are more standard SQL string enclosures. Finally, I have replaced your empty strings for id
with NULL
. The empty string may issue a warning.
For future folks... I read many articles and blogs but had luck with solution below...
GoogleTokenResponse tokenResponse =
new GoogleAuthorizationCodeTokenRequest(
new NetHttpTransport(),
JacksonFactory.getDefaultInstance(),
"https://www.googleapis.com/oauth2/v4/token",
clientId,
clientSecret,
authCode,
"") //Redirect Url
.setScopes(scopes)
.setGrantType("authorization_code")
.execute();
This blog depicts different cases in which "invalid_grant" error comes.
Enjoy!!!