If your terminal supports ANSI escape codes, this clears the screen and moves the cursor to the first row, first column:
System.out.print("\033[H\033[2J");
System.out.flush();
This works on almost all UNIX terminals and terminal emulators. The Windows cmd.exe
does not interprete ANSI escape codes.
Also, if you can't change class B, you can fix the error by using multiple inheritance.
class B:
def meth(self, arg):
print arg
class C(B, object):
def meth(self, arg):
super(C, self).meth(arg)
print C().meth(1)
Select multiple lines by clicking first line then holding shift and clicking last line. Then press:
CTRL+SHIFT+L
or on MAC: CMD+SHIFT+L (as per comments)
Alternatively you can select lines and go to SELECTION MENU >> SPLIT INTO LINES.
Now you can edit multiple lines, move cursors etc. for all selected lines.
A quick wrap up. Maybe someone has a better explanation.
A call stack is composed of 1 or many several stack frames. Each stack frame corresponds to a call to a function or procedure which has not yet terminated with a return.
To use a stack frame, a thread keeps two pointers, one is called the Stack Pointer (SP), and the other is called the Frame Pointer (FP). SP always points to the "top" of the stack, and FP always points to the "top" of the frame. Additionally, the thread also maintains a program counter (PC) which points to the next instruction to be executed.
The following are stored on the stack: local variables and temporaries, actual parameters of the current instruction (procedure, function, etc.)
There are different calling conventions regarding the cleaning of the stack.
Also check that you've included the System.Configuration
dll under your references. Without it, you won't have access to the ConfigurationManager
class in the System.Configuration namespace.
you can simply do this.
TextBox.CheckForIllegalCrossThreadCalls = false;
Adding a column using SSMS or ALTER TABLE .. ADD
will not drop any existing data.
Use
mediaplayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
mediaplayer.prepareAsync();
mediaplayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
@Override
public void onPrepared(MediaPlayer mp) {
mediaplayer.start();
}
});
This cannot be done for the table; besides, you even cannot change this default value at all.
The answer is a server variable datetime_format, it is unused.
For Oracle use:
Select * from v$version;
For SQL server use:
Select @@VERSION as Version
and for MySQL use:
Show variables LIKE "%version%";
Add below properties to the Edittext controller in the layout file
<Edittext
android:focusableInTouchMode="true"
android:cursorVisible="false"
android:focusable="false" />
I have been using this solution for while and it works fine for me.
I found that the useful getResources().getColor(R.color.color_name) is deprecated.
It is not deprecated in API Level 21, according to the documentation.
It is deprecated in the M Developer Preview. However, the replacement method (a two-parameter getColor()
that takes the color resource ID and a Resources.Theme
object) is only available in the M Developer Preview.
Hence, right now, continue using the single-parameter getColor()
method. Later this year, consider using the two-parameter getColor()
method on Android M devices, falling back to the deprecated single-parameter getColor()
method on older devices.
onInputChange(evt) {
var tgt = evt.target || window.event.srcElement,
files = tgt.files;
if (FileReader && files && files.length) {
var fr = new FileReader();
fr.onload = function () {
var base64 = fr.result;
debugger;
}
fr.readAsDataURL(files[0]);
}
}
This is how I solved it, hoping to help others later.
My system is debian 10, and minimal installation.
I also have the same problem like this.
git clone [email protected]:nothing/nothing.git
Cloning into 'nothing'...
nc: invalid option -- 'x'
nc -h for help
ssh_exchange_identification: Connection closed by remote host
fatal: Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.
Or
git clone [email protected]:nothing/nothing.git
Cloning into 'nothing'...
/usr/bin/nc: invalid option -- 'X'
nc -h for help
ssh_exchange_identification: Connection closed by remote host
fatal: Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.
So, I know the nc has different versions like openbsd-netcat
and GNU-netcat
, you can change the nc in debian to the openbsd version, but I choose to change the software like corkscrew
, because the names of the two versions of nc in system are same, and many people don’t understand it well. My approach is as follows.
sudo apt install corkscrew
Then.
vim ~/.ssh/config
Change this file like this.
Host github.com
User git
ProxyCommand corkscrew 192.168.1.22 8118 %h %p
192.168.1.22
and 8118
is my proxy server's address and port, you should change it according to your server address.
It's work fine.
Thanks @han.
String[] strarray = strlist.toArray(new String[0]);
if u want List convert to string use StringUtils.join(slist, '\n');
Both are used for data transmission between client to server, but there are subtle differences between them, which are:
Analogy:
Social Media/Network Analogy:
Set id for the textbox. ie,
<input type="text" name="txtJob" value="software engineer" id="txtJob">
In javascript
var jobValue = document.getElementById('txtJob').value
In Jquery
var jobValue = $("#txtJob").val();
...that dict.get()
has a default value of None, thereby avoiding KeyErrors:
In [1]: test = { 1 : 'a' }
In [2]: test[2]
---------------------------------------------------------------------------
<type 'exceptions.KeyError'> Traceback (most recent call last)
<ipython console> in <module>()
<type 'exceptions.KeyError'>: 2
In [3]: test.get( 2 )
In [4]: test.get( 1 )
Out[4]: 'a'
In [5]: test.get( 2 ) == None
Out[5]: True
and even to specify this 'at the scene':
In [6]: test.get( 2, 'Some' ) == 'Some'
Out[6]: True
And you can use setdefault(
) to have a value set and returned if it doesn't exist:
>>> a = {}
>>> b = a.setdefault('foo', 'bar')
>>> a
{'foo': 'bar'}
>>> b
'bar
You can suppress basic auth popup with request url looking like this:
https://username:[email protected]/admin/...
If you get 401 error (wrong username or password) it will be correctly handled with jquery error callback. It can cause some security issues (in case of http protocol instead of https), but it's works.
UPD: This solution support will be removed in Chrome 59
A boolean in C is an integer: zero for false and non-zero for true.
See also Boolean data type, section C, C++, Objective-C, AWK.
There are few general guidelines in programming that are absolute. Half the time, when somebody says 'you're doing it wrong', they're just spouting a certain amount of dogma. In C, it used to be fear of things like self-modifying code or threads, in GC languages it is forcing the GC or alternatively preventing the GC from running.
As is the case with most guidelines and good rules of thumb (and good design practices), there are rare occasions where it does make sense to work around the established norm. You do have to be very sure you understand the case, that your case really requires the abrogation of common practice, and that you understand the risks and side-effects you can cause. But there are such cases.
Programming problems are widely varied and require a flexible approach. I have seen cases where it makes sense to block GC in garbage collected languages and places where it makes sense to trigger it rather than waiting for it to occur naturally. 95% of the time, either of these would be a signpost of not having approached the problem right. But 1 time in 20, there probably is a valid case to be made for it.
I know no-one is asking for a jQuery solution here, but might be worth mentioning that with jQuery you can just ask for:$('#selectorid').val()
Here's how I did it in Excel 2003 using conditional formatting.
To apply conditional formatting to Sheet1
using values from Sheet2
, you need to mirror the values into Sheet1
.
Sheet1
.Enter the following formula into A1:
=IF(ISBLANK(Sheet2!B1),"",Sheet2!B1)
A1
by right-clicking it and selecting "Copy
".A
by right-clicking its header and selecting "Paste
".Sheet1
, column A
should now exactly mirror the values in Sheet2
, column B
.
(Note: if you don't like it in column A
, it works just as well to have it in column Z
or anywhere else.)
Sheet1
.B
by left-clicking its header.Format > Conditional Formatting...
Change Condition 1
to "Formula is
" and enter this formula:
=MATCH(B1,$A:$A,0)
Click the Format...
button and select a green background.
You should now see the green background applied to the matching cells in Sheet1
.
Sheet1
.A
and select "Hide
".This should automatically update Sheet1
whenever anything in Sheet2
is changed.
Create a DataView. You cannot sort a DataTable directly, but you can create a DataView from the DataTable and sort that.
Creating: http://msdn.microsoft.com/en-us/library/hy5b8exc.aspx
Sorting: http://msdn.microsoft.com/en-us/library/13wb36xf.aspx
The following code example creates a view that shows all the products where the number of units in stock is less than or equal to the reorder level, sorted first by supplier ID and then by product name.
DataView prodView = new DataView(prodDS.Tables["Products"],
"UnitsInStock <= ReorderLevel",
"SupplierID, ProductName",
DataViewRowState.CurrentRows);
what language is this? If you're using a language that passes everything by reference like Java (except for native types), typically you can call .clone()
method. The .clone() method is typically implemented by copying/cloning all relevant instance fields into the new object.
Simply put, the ++
and --
operators don't exist in Python because they wouldn't be operators, they would have to be statements. All namespace modification in Python is a statement, for simplicity and consistency. That's one of the design decisions. And because integers are immutable, the only way to 'change' a variable is by reassigning it.
Fortunately we have wonderful tools for the use-cases of ++
and --
in other languages, like enumerate()
and itertools.count()
.
Another option that may or may not make sense in your case, is to actually have a separate column with pre-lowerscored values of your existing column. This can be populated using the SQLite function LOWER()
, and you can then perform matching on this column instead.
Obviously, it adds redundancy and a potential for inconsistency, but if your data is static it might be a suitable option.
Overriding drawPlaceholderInRect:
would be the correct way, but it does not work due to a bug in the API (or the documentation).
The method never gets called on an UITextField
.
See also drawTextInRect on UITextField not called
You might use digdog's solution. As I am not sure if that gets past Apples review, I chose a different solution: Overlay the text field with my own label which imitates the placeholder behaviour.
This is a bit messy though. The code looks like this (Note I am doing this inside a subclass of TextField):
@implementation PlaceholderChangingTextField
- (void) changePlaceholderColor:(UIColor*)color
{
// Need to place the overlay placeholder exactly above the original placeholder
UILabel *overlayPlaceholderLabel = [[[UILabel alloc] initWithFrame:CGRectMake(self.frame.origin.x + 8, self.frame.origin.y + 4, self.frame.size.width - 16, self.frame.size.height - 8)] autorelease];
overlayPlaceholderLabel.backgroundColor = [UIColor whiteColor];
overlayPlaceholderLabel.opaque = YES;
overlayPlaceholderLabel.text = self.placeholder;
overlayPlaceholderLabel.textColor = color;
overlayPlaceholderLabel.font = self.font;
// Need to add it to the superview, as otherwise we cannot overlay the buildin text label.
[self.superview addSubview:overlayPlaceholderLabel];
self.placeholder = nil;
}
Try this
if (location.protocol !== 'https:') {
location.replace(`https:${location.href.substring(location.protocol.length)}`);
}
location.href = blah
adds this redirect to the browser history. If the user hits the back button, they will be redirected back to the the same page. It is better to use location.replace
as it doesn't add this redirect to the browser history.
If your SQL query has a LIMIT
clause and you want to know how many results total are in that data set you can use SQL_CALC_FOUND_ROWS
followed by SELECT FOUND_ROWS();
This returns the number of rows A LOT more efficiently that using COUNT(*)
Example (straight from MySQL docs):
mysql> SELECT SQL_CALC_FOUND_ROWS * FROM tbl_name
-> WHERE id > 100 LIMIT 10;
mysql> SELECT FOUND_ROWS();
Even though Composition is preferred, I would like to highlight pros of Inheritance and cons of Composition.
Pros of Inheritance:
It establishes a logical "IS A" relation. If Car and Truck are two types of Vehicle ( base class), child class IS A base class.
i.e.
Car is a Vehicle
Truck is a Vehicle
With inheritance, you can define/modify/extend a capability
Cons of Composition:
e.g. If Car contains Vehicle and if you have to get price of the Car, which has been defined in Vehicle, your code will be like this
class Vehicle{
protected double getPrice(){
// return price
}
}
class Car{
Vehicle vehicle;
protected double getPrice(){
return vehicle.getPrice();
}
}
For checking an array empty() is better than sizeof().
If the array contains huge amount of data. It will takes more times for counting the size of the array. But checking empty is always easy.
//for empty
if(!empty($array))
echo 'Data exist';
else
echo 'No data';
//for sizeof
if(sizeof($array)>1)
echo 'Data exist';
else
echo 'No data';
No Gemfile.lock means:
-> Always check in Gemfile.lock, make travis delete it if you want to be extra thorough https://grosser.it/2015/08/14/check-in-your-gemfile-lock/
console.log(new Date().valueOf()); // returns the number of milliseconds since the epoch
_x000D_
I would face this problem when uninstalling the app via the device (i.e. dragging the app to the "Uninstall" option). But here is the proper way to uninstall:
Use the ./gradlew uninstallAll
command. This will prevent the Error: Activity class {HomeActivity} does not exist.
error.
Update:
If you’re lazy you can use the abbreviation for this task: ./gradlew uA
.
Or define aliases for common gradle tasks in your .bash_profile
, doing so will save time, typing, and you won’t have to remember every command nor worry about typos. I suggest doing this.
validate
: It validates the schema and makes no changes to the DB.
Assume you have added a new column in the mapping file and perform the insert operation, it will throw an Exception "missing the XYZ column" because the existing schema is different than the object you are going to insert. If you alter the table by adding that new column manually then perform the Insert operation then it will definitely insert all columns along with the new column to the Table.
Means it doesn't make any changes/alters the existing schema/table.
update
: it alters the existing table in the database when you perform operation.
You can add or remove columns with this option of hbm2ddl.
But if you are going to add a new column that is 'NOT NULL' then it will ignore adding that particular column to the DB. Because the Table must be empty if you want to add a 'NOT NULL' column to the existing table.
$hash_type$salt$password
If the hash does not use a salt, then there is no $
sign for that. The actual hash in your case is after the 2nd $
The reason for this is, so you can have many types of hashes with different salts and feeds that string into a function that knows how to match it with some other value.
Simple Intuitive solution in python.
while stack:
node = stack.pop()
if node:
if isinstance(node,TreeNode):
stack.append(node.val)
stack.append(node.right)
stack.append(node.left)
else:
post.append(node)
return post
[^\[]
Match any character that is not [.
+
Match 1 or more of the anything that is not [
. Creates groups of these matches.
(?=\])
Positive lookahead ]
. Matches a group ending with ]
without including it in the result.
Done.
[^\[]+(?=\])
Proof.
Similar to the solution proposed by null. But the additional \]
is not required. As an additional note, it appears \
is not required to escape the [
after the ^
. For readability, I would leave it in.
Does not work in the situation in which the delimiters are identical. "more or less"
for example.
For all Solution index.php remove form url and woff file allowed. for write below code in .htaccess file and and make this alternation to your application/config/config.php file: $config['index_page'] = '';
For only Linux hosting server. .htaccess file details
AddType font/ttf .ttf
AddType font/eot .eot
AddType font/otf .otf
AddType font/woff .woff
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
#Removes access to the system folder by users.
#Additionally this will allow you to create a System.php controller,
#previously this would not have been possible.
#'system' can be replaced if you have renamed your system folder.
RewriteCond %{REQUEST_URI} ^system.*
RewriteRule ^(.*)$ /index.php?/$1 [L]
#When your application folder isn't in the system folder
#This snippet prevents user access to the application folder
#Submitted by: Fabdrol
#Rename 'application' to your applications folder name.
RewriteCond %{REQUEST_URI} ^application.*
RewriteRule ^(.*)$ /index.php?/$1 [L]
#Checks to see if the user is attempting to access a valid file,
#such as an image or css document, if this isn't true it sends the
#request to index.php
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php?/$1 [L]
</IfModule>
<IfModule !mod_rewrite.c>
# If we don't have mod_rewrite installed, all 404's
# can be sent to index.php, and everything works as normal.
# Submitted by: ElliotHaughin
ErrorDocument 404 /index.php
</IfModule>
You have to define public String toString()
method in your Student
class. For example:
public String toString() {
return "Student: " + studentName + ", " + studentNo;
}
Neither <iostream>
nor <iostream.h>
are standard C header files. Your code is meant to be C++, where <iostream>
is a valid header. Use g++
(and a .cpp
file extension) for C++ code.
Alternatively, this program uses mostly constructs that are available in C anyway. It's easy enough to convert the entire program to compile using a C compiler. Simply remove #include <iostream>
and using namespace std;
, and replace cout << endl;
with putchar('\n');
... I advise compiling using C99 (eg. gcc -std=c99
)
Here is what I did recently in PHP on one of my bigger systems:
User inputs newsletter text and selects the recipients (which generates a query to retrieve the email addresses for later).
Add the newsletter text and recipients query to a row in mysql table called *email_queue*
I created another script, which runs every minute as a cron job. It uses the SwiftMailer class. This script simply:
during business hours, sends all email with priority == 0
after hours, send other emails by priority
Depending on the hosts settings, I can now have it throttle using standard swiftmailers plugins like antiflood and throttle...
$mailer->registerPlugin(new Swift_Plugins_AntiFloodPlugin(50, 30));
and
$mailer->registerPlugin(new Swift_Plugins_ThrottlerPlugin( 100, Swift_Plugins_ThrottlerPlugin::MESSAGES_PER_MINUTE ));
etc, etc..
I have expanded it way beyond this pseudocode, with attachments, and many other configurable settings, but it works very well as long as your server is setup correctly to send email. (Probably wont work on shared hosting, but in theory it should...) Swiftmailer even has a setting
$message->setReturnPath
Which I now use to track bounces...
Happy Trails! (Happy Emails?)
Recommendation:
when you have more than one condition with and
and or
is better separate with ()
to avoid verification problems
<c:if test="${(not validID) and (addressIso == 'US' or addressIso == 'BR')}">
I had 20.8 GB in the C:\Users\ggo\AppData\Local\Android\Sdk\system-images folder (6 android images: - android-10 - android-15 - android-21 - android-23 - android-25 - android-26 ).
I have compressed the C:\Users\ggo\AppData\Local\Android\Sdk\system-images folder.
Now it takes only 4.65 GB.
I did not encountered any problem up to now...
Compression seems to vary from 2/3 to 6, sometimes much more:
You must update the Windows PowerShell to minimum of version 4.0 for the script below to work.
[array]$SiteLinks = "http://mypage.global/Chemical/test.html"
"http://maypage2:9080/portal/site/hotpot/test.json"
foreach($url in $SiteLinks) {
try {
Write-host "Verifying $url" -ForegroundColor Yellow
$checkConnection = Invoke-WebRequest -Uri $url
if ($checkConnection.StatusCode -eq 200) {
Write-Host "Connection Verified!" -ForegroundColor Green
}
}
catch [System.Net.WebException] {
$exceptionMessage = $Error[0].Exception
if ($exceptionMessage -match "503") {
Write-Host "Server Unavaiable" -ForegroundColor Red
}
elseif ($exceptionMessage -match "404") {
Write-Host "Page Not found" -ForegroundColor Red
}
}
}
Do you have the SSH2 extension available?
Docs: http://www.php.net/manual/en/function.ssh2-exec.php
$connection = ssh2_connect('shell.example.com', 22);
ssh2_auth_password($connection, 'username', 'password');
$stream = ssh2_exec($connection, '/usr/local/bin/php -i');
Just for curiosity and to compare with Saint Hill's answer.
If you need to process heavy data you should not use JVM in client mode. Client mode is not made for optimizations.
Let's compare results of @Saint Hill benchmarks using a JVM in Client mode and Server mode.
Core2Quad Q6600 G0 @ 2.4GHz
JavaSE 1.7.0_40
See also: Real differences between "java -server" and "java -client"?
CLIENT MODE:
len = 2: 111k charAt(i), 105k cbuff[i], 62k new[i], 17k field access. (chars/ms)
len = 4: 285k charAt(i), 166k cbuff[i], 114k new[i], 43k field access. (chars/ms)
len = 6: 315k charAt(i), 230k cbuff[i], 162k new[i], 69k field access. (chars/ms)
len = 8: 333k charAt(i), 275k cbuff[i], 181k new[i], 85k field access. (chars/ms)
len = 12: 342k charAt(i), 342k cbuff[i], 222k new[i], 117k field access. (chars/ms)
len = 16: 363k charAt(i), 347k cbuff[i], 275k new[i], 152k field access. (chars/ms)
len = 20: 363k charAt(i), 392k cbuff[i], 289k new[i], 180k field access. (chars/ms)
len = 24: 375k charAt(i), 428k cbuff[i], 311k new[i], 205k field access. (chars/ms)
len = 28: 378k charAt(i), 474k cbuff[i], 341k new[i], 233k field access. (chars/ms)
len = 32: 376k charAt(i), 492k cbuff[i], 340k new[i], 251k field access. (chars/ms)
len = 64: 374k charAt(i), 551k cbuff[i], 374k new[i], 367k field access. (chars/ms)
len = 128: 385k charAt(i), 624k cbuff[i], 415k new[i], 509k field access. (chars/ms)
len = 256: 390k charAt(i), 675k cbuff[i], 436k new[i], 619k field access. (chars/ms)
len = 512: 394k charAt(i), 703k cbuff[i], 439k new[i], 695k field access. (chars/ms)
len = 1024: 395k charAt(i), 718k cbuff[i], 462k new[i], 742k field access. (chars/ms)
len = 2048: 396k charAt(i), 725k cbuff[i], 471k new[i], 767k field access. (chars/ms)
len = 4096: 396k charAt(i), 727k cbuff[i], 459k new[i], 780k field access. (chars/ms)
len = 8192: 397k charAt(i), 712k cbuff[i], 446k new[i], 772k field access. (chars/ms)
SERVER MODE:
len = 2: 86k charAt(i), 41k cbuff[i], 46k new[i], 80k field access. (chars/ms)
len = 4: 571k charAt(i), 250k cbuff[i], 97k new[i], 222k field access. (chars/ms)
len = 6: 666k charAt(i), 333k cbuff[i], 125k new[i], 315k field access. (chars/ms)
len = 8: 800k charAt(i), 400k cbuff[i], 181k new[i], 380k field access. (chars/ms)
len = 12: 800k charAt(i), 521k cbuff[i], 260k new[i], 545k field access. (chars/ms)
len = 16: 800k charAt(i), 592k cbuff[i], 296k new[i], 640k field access. (chars/ms)
len = 20: 800k charAt(i), 666k cbuff[i], 408k new[i], 800k field access. (chars/ms)
len = 24: 800k charAt(i), 705k cbuff[i], 452k new[i], 800k field access. (chars/ms)
len = 28: 777k charAt(i), 736k cbuff[i], 368k new[i], 933k field access. (chars/ms)
len = 32: 800k charAt(i), 780k cbuff[i], 571k new[i], 969k field access. (chars/ms)
len = 64: 800k charAt(i), 901k cbuff[i], 800k new[i], 1306k field access. (chars/ms)
len = 128: 1084k charAt(i), 888k cbuff[i], 633k new[i], 1620k field access. (chars/ms)
len = 256: 1122k charAt(i), 966k cbuff[i], 729k new[i], 1790k field access. (chars/ms)
len = 512: 1163k charAt(i), 1007k cbuff[i], 676k new[i], 1910k field access. (chars/ms)
len = 1024: 1179k charAt(i), 1027k cbuff[i], 698k new[i], 1954k field access. (chars/ms)
len = 2048: 1184k charAt(i), 1043k cbuff[i], 732k new[i], 2007k field access. (chars/ms)
len = 4096: 1188k charAt(i), 1049k cbuff[i], 742k new[i], 2031k field access. (chars/ms)
len = 8192: 1157k charAt(i), 1032k cbuff[i], 723k new[i], 2048k field access. (chars/ms)
CONCLUSION:
As you can see, server mode is much faster.
I used this (need to run it only once); also make sure you have rights to execute:
from PowerShell with elevated rights:
Set-ExecutionPolicy=RemoteSigned
then from a bat file:
-----------------------------------------
ftype Microsoft.PowerShellScript.1="C:\WINDOWS\system32\windowspowershell\v1.0\powershell.exe" -noexit ^&'%%1'
assoc .ps1=Microsoft.PowerShellScript.1
-----------------------------------------
auto exit: remove -noexit
and voila; double-clicking a *.ps1 will execute it.
window.onload = function() {
var iDiv = document.createElement('div');
iDiv.id = 'block';
iDiv.className = 'block';
document.body.appendChild(iDiv);
var iiDiv = document.createElement('div');
iiDiv.className = 'block-2';
var s = document.getElementById('block');
s.appendChild(iiDiv);
}
I have the problem anyway with -lm added
gcc -Wall -lm mtest.c -o mtest.o
mtest.c: In function 'f1':
mtest.c:6:12: warning: unused variable 'res' [-Wunused-variable]
/tmp/cc925Nmf.o: In function `f1':
mtest.c:(.text+0x19): undefined reference to `sin'
collect2: ld returned 1 exit status
I discovered recently that it does not work if you first specify -lm. The order matters:
gcc mtest.c -o mtest.o -lm
Just link without problems
So you must specify the libraries after.
Construct and fill out a hidden method=POST action="http://example.com/vote"
form and submit it, rather than using window.location
at all.
Server.UrlEncode() is there to provide backward compatibility with Classic ASP,
Server.UrlEncode(str);
Is equivalent to:
HttpUtility.UrlEncode(str, Response.ContentEncoding);
If it's specifically zero length integers, then you want something like
is.integer0 <- function(x)
{
is.integer(x) && length(x) == 0L
}
Check it with:
is.integer0(integer(0)) #TRUE
is.integer0(0L) #FALSE
is.integer0(numeric(0)) #FALSE
You can also use assertive
for this.
library(assertive)
x <- integer(0)
assert_is_integer(x)
assert_is_empty(x)
x <- 0L
assert_is_integer(x)
assert_is_empty(x)
## Error: is_empty : x has length 1, not 0.
x <- numeric(0)
assert_is_integer(x)
assert_is_empty(x)
## Error: is_integer : x is not of class 'integer'; it has class 'numeric'.
The cause of that problem has to do with system permissions (thanks @ IsaacCisneros for this suggestion). Somehow HTC Wildfire (and maybe the others) need something more from the system than Samsung devices. Simple solution is to run Eclipse as a root, but this is not very comfortable with non-sudo Linux systems like Fedora.
I've found another way of achieving the same goal, which seems to be more user friendly and is lesser security hole then running entire IDE with super user privileges. Mind this is still only a workaround of the problem. System root usage should be minimalized only to administrative tasks, and “adb” was designed to work with normal user account without SUID. Despite of the fact that the proper setting of SUID is quite secure, every single permission increase is a potential system security hole.
1.Setting ownership of the adb binary (owner – root, owner group - user_group):
chown root:user_group adb
2.Setting permissions with SUID:
chmod 4550 adb
This should result something similar to this (ls -llh):
-r-sr-x---. 1 root user_name 1.2M Jan 8 11:42 adb
After that you will be able to run adb as a root, event though you'll be using your normal user account. You can run Eclipse as a normal user and your HTC should be discovered properly.
./adb devices
List of devices attached
HT0BPPY15230 device
I just wanted to contribute this should someone be looking for help with adding separators between the strings, depending on whether a field is NULL or not.
So in the example of creating a one line address from separate fields
Address1, Address2, Address3, City, PostCode
in my case, I have the following Calculated Column which seems to be working as I want it:
case
when [Address1] IS NOT NULL
then ((( [Address1] +
isnull(', '+[Address2],'')) +
isnull(', '+[Address3],'')) +
isnull(', '+[City] ,'')) +
isnull(', '+[PostCode],'')
end
Hope that helps someone!
You can use Dispatcher.Invoke to update your GUI from a secondary thread.
Here is an example:
private void Window_Loaded(object sender, RoutedEventArgs e)
{
new Thread(DoSomething).Start();
}
public void DoSomething()
{
for (int i = 0; i < 100000000; i++)
{
this.Dispatcher.Invoke(()=>{
textbox.Text=i.ToString();
});
}
}
CString s;
int i;
i = _wtoi(s); // if you use wide charater formats
i = _atoi(s); // otherwise
Tip: generate error.
declare @Day int, @Config_Node varchar(50)
set @Config_Node = 'value to trace'
set @Day = @Config_Node
You will get this message:
Conversion failed when converting the varchar value 'value to trace' to data type int.
You can't. Variables defined inside a method are local to that method.
If you want to share variables between methods, then you'll need to specify them as member variables of the class. Alternatively, you can pass them from one method to another as arguments (this isn't always applicable).
Looks like you're using instance methods instead of static ones.
If you don't want to create an object, you should declare all your methods static, so something like
private static void methodName(Argument args...)
If you want a variable to be accessible by all these methods, you should initialise it outside the methods and to limit its scope, declare it private.
private static int[][] array = new int[3][5];
Global variables are usually looked down upon (especially for situations like your one) because in a large-scale program they can wreak havoc, so making it private will prevent some problems at the least.
Also, I'll say the usual: You should try to keep your code a bit tidy. Use descriptive class, method and variable names and keep your code neat (with proper indentation, linebreaks etc.) and consistent.
Here's a final (shortened) example of what your code should be like:
public class Test3 {
//Use this array in your methods
private static int[][] scores = new int[3][5];
/* Rather than just "Scores" name it so people know what
* to expect
*/
private static void createScores() {
//Code...
}
//Other methods...
/* Since you're now using static methods, you don't
* have to initialise an object and call its methods.
*/
public static void main(String[] args){
createScores();
MD(); //Don't know what these do
sumD(); //so I'll leave them.
}
}
Ideally, since you're using an array, you would create the array in the main method and pass it as an argument across each method, but explaining how that works is probably a whole new question on its own so I'll leave it at that.
Use the before
and after
methods: Javadoc
if (mytime.after(fromtime) && mytime.before(totime))
In your viewDidLoad
, register at notification center to listen to this opened from background action
NotificationCenter.default.addObserver(self, selector:#selector(doSomething), name: NSNotification.Name.UIApplicationWillEnterForeground, object: nil)
Then add this function and perform needed action
func doSomething(){
//...
}
Finally add this function to clean up the notification observer when your view controller is destroyed.
deinit {
NotificationCenter.default.removeObserver(self)
}
DialogFragment comes with the power of a dialog and a Fragment. Basically all the lifecycle events are managed very well with DialogFragment automatically, like change in screen configuration etc.
For graphical elements that are purely decorative, set their respective android:contentDescription XML attributes to "@null".
If your app only supports devices running Android 4.1 (API level 16) or higher, you can instead set these elements' android:importantForAccessibility XML attributes to "no"
Yup, there's the convert_tz
function.
Driver.getPageSource() is a bad way to verify text present. Suppose you say, driver.getPageSource().contains("input");
That doesn't verify "input" is present on the screen, only that "input" is present in the html, like an input tag.
I usually verify text on an element by using xpath:
boolean textFound = false;
try {
driver.findElement(By.xpath("//*[contains(text(),'someText')]"));
textFound = true;
} catch (Exception e) {
textFound = false;
}
If you want an exact text match, just remove the contains function:
driver.findElement(By.xpath("//*[text()='someText']));
<IfModule mod_expires.c>
# Enable expirations
ExpiresActive On
# Default directive
ExpiresDefault "access plus 1 month"
# My favicon
ExpiresByType image/x-icon "access plus 1 year"
# Images
ExpiresByType image/gif "access plus 1 month"
ExpiresByType image/png "access plus 1 month"
ExpiresByType image/jpg "access plus 1 month"
ExpiresByType image/jpeg "access plus 1 month"
# CSS
ExpiresByType text/css "access plus 1 month"
# Javascript
ExpiresByType application/javascript "access plus 1 year"
</IfModule>
A simple and flexible offline recognition on Android is implemented by CMUSphinx, an open source speech recognition toolkit. It works purely offline, fast and configurable It can listen continuously for keyword, for example.
You can find latest code and tutorial here.
Update in 2019: Time goes fast, CMUSphinx is not that accurate anymore. I recommend to try Kaldi toolkit instead. The demo is here.
For a Ruby on Rails application, I was able to prevent a layout from loading by specifying
render layout: false
in the controller action that I wanted to respond with ajax html.
A cleaner approach:
function Size($path)
{
$bytes = sprintf('%u', filesize($path));
if ($bytes > 0)
{
$unit = intval(log($bytes, 1024));
$units = array('B', 'KB', 'MB', 'GB');
if (array_key_exists($unit, $units) === true)
{
return sprintf('%d %s', $bytes / pow(1024, $unit), $units[$unit]);
}
}
return $bytes;
}
var list = new List<string> { "One", "Two", "Three" };
Essentially the syntax is:
new List<Type> { Instance1, Instance2, Instance3 };
Which is translated by the compiler as
List<string> list = new List<string>();
list.Add("One");
list.Add("Two");
list.Add("Three");
You have to use ':' colon instead of ';' semicolon.
As it stands now you try to execute the jar file which has not the execute bit set, hence the Permission denied.
And the variable must be CLASSPATH not classpath.
Try os.path.splitext it should do what you want.
import os
print os.path.splitext('/home/user/somefile.txt')[0]+'.jpg'
I had found problems with some of the other methods mentioned here. Another way to do it would be to use layout grid B, and put your content in block b, and leave blocks a and c empty.
http://demos.jquerymobile.com/1.1.2/docs/content/content-grids.html
<div class="ui-grid-b">_x000D_
<div class="ui-block-a"></div>_x000D_
<div class="ui-block-b">Your Content Here</div>_x000D_
<div class="ui-block-c"></div>_x000D_
</div><!-- /grid-b -->
_x000D_
I've spent a day on trying to put all the pieces together, been in hundreds of sites and tutorials, but they all skip trivial steps.
So here's the full guide:
New Project:
C:\Program Files\Java\jdk{version}
C:\Program Files\Android\android-sdk-windows
.Compiling:
.youtube-thumb img {display:block;} or .youtube-thumb img {float:left;}
zlists = [[0] * i for i in range(10)]
zlists[0]
is a list of 0 zeroes, zlists[1]
is a list of 1 zero, zlists[2]
is a list of 2 zeroes, etc.
Since Spring 5 you just need to implement the interface WebMvcConfigurer
:
public class MvcConfig implements WebMvcConfigurer {
This is because Java 8 introduced default methods on interfaces which cover the functionality of the WebMvcConfigurerAdapter
class
See here:
You can't replace ?
in your query with an arbitrary number of values. Each ?
is a placeholder for a single value only. To support an arbitrary number of values, you'll have to dynamically build a string containing ?, ?, ?, ... , ?
with the number of question marks being the same as the number of values you want in your in
clause.
Here's what finally worked for me. You'll have to convert the code to suit your own needs, but this will do it.
$fname = filter_input(INPUT_POST, "name");
$img = filter_input(INPUT_POST, "image");
$img = str_replace('data:image/png;base64,', '', $img);
$img = str_replace(' ', '+', $img);
$img = base64_decode($img);
file_put_contents($fname, $img);
print "Image has been saved!";
To check are the following:
ssh -vvv [email protected]
to see debug logs. If thing goes well, github.com will be added to known_hosts.chmod 700 id_rsa
)After all checks, try ssh -vvv [email protected]
.
My solution was https://yoksel.github.io/url-encoder/ You just simply insert your svg and getting back background-image code
Based on your comments in this answer, I do what you're trying to do like this:
module.exports = function (app, db) {
var module = {};
module.auth = function (req, res) {
// This will be available 'outside'.
// Authy stuff that can be used outside...
};
// Other stuff...
module.pickle = function(cucumber, herbs, vinegar) {
// This will be available 'outside'.
// Pickling stuff...
};
function jarThemPickles(pickle, jar) {
// This will be NOT available 'outside'.
// Pickling stuff...
return pickleJar;
};
return module;
};
I structure pretty much all my modules like that. Seems to work well for me.
on sql 2008 this is valid
DECLARE @myVariable nvarchar(Max) = 'John said to Emily "Hey there Emily"'
select @myVariable
on sql server 2005, you need to do this
DECLARE @myVariable nvarchar(Max)
select @myVariable = 'John said to Emily "Hey there Emily"'
select @myVariable
The reason that this is happening is because the stack panel measures every child element with positive infinity as the constraint for the axis that it is stacking elements along. The child controls have to return how big they want to be (positive infinity is not a valid return from the MeasureOverride in either axis) so they return the smallest size where everything will fit. They have no way of knowing how much space they really have to fill.
If your view doesn’t need to have a scrolling feature and the answer above doesn't suit your needs, I would suggest implement your own panel. You can probably derive straight from StackPanel and then all you will need to do is change the ArrangeOverride method so that it divides the remaining space up between its child elements (giving them each the same amount of extra space). Elements should render fine if they are given more space than they wanted, but if you give them less you will start to see glitches.
If you want to be able to scroll the whole thing then I am afraid things will be quite a bit more difficult, because the ScrollViewer gives you an infinite amount of space to work with which will put you in the same position as the child elements were originally. In this situation you might want to create a new property on your new panel which lets you specify the viewport size, you should be able to bind this to the ScrollViewer’s size. Ideally you would implement IScrollInfo, but that starts to get complicated if you are going to implement all of it properly.
For me, the solution (workaround) is to turn off JavaScript debugging on Chrome, which I believe is a new feature introduced in VS 2017.
Go to Tools > Options > Debugging > General and turn off the setting for Enable JavaScript Debugging for ASP.NET (Chrome and IE).
This is a known issue already, and seems to have an investigation underway.
Full information about JS debugging in VS 2017 here: https://blogs.msdn.microsoft.com/webdev/2016/11/21/client-side-debugging-of-asp-net-projects-in-google-chrome/
"16:23:01" doesn't match the pattern of "hh:mm:ss tt" - it doesn't have an am/pm designator, and 16 clearly isn't in a 12-hour clock. You're specifying that format in the parsing part, so you need to match the format of the existing data. You want:
DateTime dateTime = DateTime.ParseExact(time, "HH:mm:ss",
CultureInfo.InvariantCulture);
(Note the invariant culture, not the current culture - assuming your input genuinely always uses colons.)
If you want to format it to hh:mm:ss tt
, then you need to put that part in the ToString
call:
lblClock.Text = date.ToString("hh:mm:ss tt", CultureInfo.CurrentCulture);
Or better yet (IMO) use "whatever the long time pattern is for the culture":
lblClock.Text = date.ToString("T", CultureInfo.CurrentCulture);
Also note that hh
is unusual; typically you don't want to 0-left-pad the number for numbers less than 10.
(Also consider using my Noda Time API, which has a LocalTime
type - a more appropriate match for just a "time of day".)
For posterity....I figured out how to get what I needed. Here it is in case it might be useful to somebody else.
$alist = "Name`tAccountName`tDescription`tEmailAddress`tLastLogonDate`tManager`tTitle`tDepartment`tCompany`twhenCreated`tAcctEnabled`tGroups`n"
$userlist = Get-ADUser -Filter * -Properties * | Select-Object -Property Name,SamAccountName,Description,EmailAddress,LastLogonDate,Manager,Title,Department,Company,whenCreated,Enabled,MemberOf | Sort-Object -Property Name
$userlist | ForEach-Object {
$grps = $_.MemberOf | Get-ADGroup | ForEach-Object {$_.Name} | Sort-Object
$arec = $_.Name,$_.SamAccountName,$_.Description,$_.EmailAddress,$_LastLogonDate,$_.Manager,$_.Title,$_.Department,$_.Company,$_.whenCreated,$_.Enabled
$aline = ($arec -join "`t") + "`t" + ($grps -join "`t") + "`n"
$alist += $aline
}
$alist | Out-File D:\Temp\ADUsers.csv
for text/plain text mail in a mail function definitely use PHP_EOL constant, you can combine it with
too for text/html text:
$messagePLAINTEXT="This is my message."
. PHP_EOL .
"This is a new line in plain text";
$messageHTML="This is my message."
. PHP_EOL . "<br/>" .
"This is a new line in html text, check line break in code view";
$messageHTML="This is my message."
. "<br/>" .
"This is a new line in html text, no line break in code view";
Quite a few utility libraries such as YourJS offer functions for determining if something is an array or if something is an integer or a lot of other types as well. YourJS defines isInt by checking if the value is a number and then if it is divisible by 1:
function isInt(x) {
return typeOf(x, 'Number') && x % 1 == 0;
}
The above snippet was taken from this YourJS snippet and thusly only works because typeOf
is defined by the library. You can download a minimalistic version of YourJS which mainly only has type checking functions such as typeOf()
, isInt()
and isArray()
: http://yourjs.com/snippets/build/34,2
According to the release-notes, Java 11 removed the Java EE modules:
java.xml.bind (JAXB) - REMOVED
See JEP 320 for more info.
You can fix the issue by using alternate versions of the Java EE technologies. Simply add Maven dependencies that contain the classes you need:
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
<version>2.3.0</version>
</dependency>
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-core</artifactId>
<version>2.3.0</version>
</dependency>
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-impl</artifactId>
<version>2.3.0</version>
</dependency>
Instead of using old JAXB modules you can fix the issue by using Jakarta XML Binding from Jakarta EE 8:
<dependency>
<groupId>jakarta.xml.bind</groupId>
<artifactId>jakarta.xml.bind-api</artifactId>
<version>2.3.3</version>
</dependency>
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-impl</artifactId>
<version>2.3.3</version>
<scope>runtime</scope>
</dependency>
Use latest release of Eclipse Implementation of JAXB 3.0.0:
<dependency>
<groupId>jakarta.xml.bind</groupId>
<artifactId>jakarta.xml.bind-api</artifactId>
<version>3.0.0</version>
</dependency>
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-impl</artifactId>
<version>3.0.0</version>
<scope>runtime</scope>
</dependency>
Note: Jakarta EE 9 adopts new API package namespace jakarta.xml.bind.*
, so update import statements:
javax.xml.bind -> jakarta.xml.bind
<!DOCTYPE html>
<html>
<head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.js"></script>
<script type="text/javascript" src="jquery-2.1.0.js"></script>
<script type="text/javascript" >
function openOnImageClick(event)
{
//alert("Jai Sh Raam");
// document.getElementById("images").src = "fruits.jpg";
var target = event.target || event.srcElement; // IE
console.log(target);
console.log(target.src);
var img = document.createElement('img');
img.setAttribute('src', target.src);
img.setAttribute('width', '200');
img.setAttribute('height', '150');
document.getElementById("images").appendChild(img);
}
</script>
</head>
<body>
<h1>Screen Shot View</h1>
<p>Click the Tiger to display the Image</p>
<div id="images" >
</div>
<img src="tiger.jpg" width="100" height="50" alt="unfinished bingo card" onclick="openOnImageClick(event)" />
<img src="sabaLogo1.jpg" width="100" height="50" alt="unfinished bingo card" onclick="openOnImageClick(event)" />
</body>
</html>
Even if this question is a little older:
If you want to use if cond1 or cond 2
- you should not use complicated loops or stuff like that.
Simple provide both ifs
after each other combined with goto
- that's an implicit or.
//thats an implicit IF cond1 OR cond2 OR cond3
if cond1 GOTO doit
if cond2 GOTO doit
if cond3 GOTO doit
//thats our else.
GOTO end
:doit
echo "doing it"
:end
Without goto but an "inplace" action, you might execute the action 3 times, if ALL conditions are matching.
The question is specific to SQL Server, but I would like to extend Martin Smith's answer.
SQL:2003 standard allows to define multiple values for simple case expression:
SELECT CASE c.Number
WHEN '1121231','31242323' THEN 1
WHEN '234523','2342423' THEN 2
END AS Test
FROM tblClient c;
It is optional feature: Comma-separated predicates in simple CASE expression“ (F263).
Syntax:
CASE <common operand>
WHEN <expression>[, <expression> ...] THEN <result>
[WHEN <expression>[, <expression> ...] THEN <result>
...]
[ELSE <result>]
END
As for know I am not aware of any RDBMS that actually supports that syntax.
In a batch file, the below works for local files, but fails for files on network hard drives
for %%I in ("test.jpg") do @set filesize=%~z1
However, it's inferior code, because it doesn't work for files saved on a network drive (for example, \\Nas\test.jpg
and \\192.168.2.40\test.jpg
). The below code works for files in any location, and I wrote it myself.
I'm sure there are more efficient ways of doing this using VBScript, or PowerShell or whatever, but I didn't want to do any of that; good ol' batch for me!
set file=C:\Users\Admin\Documents\test.jpg
set /a filesize=
set fileExclPath=%file:*\=%
:onemoretime
set fileExclPath2=%fileExclPath:*\=%
set fileExclPath=%fileExclPath2:*\=%
if /i "%fileExclPath%" NEQ "%fileExclPath2%" goto:onemoretime
dir /s /a-d "%workingdir%">"%temp%\temp.txt"
findstr /C:"%fileExclPath%" "%temp%\temp.txt" >"%temp%\temp2.txt"
set /p filesize= <"%temp%\temp2.txt"
echo set filesize=%%filesize: %fileExclPath%%ext%=%% >"%temp%\temp.bat"
call "%temp%\temp.bat"
:RemoveTrailingSpace
if /i "%filesize:~-1%" EQU " " set filesize=%filesize:~0,-1%
if /i "%filesize:~-1%" EQU " " goto:RemoveTrailingSpace
:onemoretime2
set filesize2=%filesize:* =%
set filesize=%filesize2:* =%
if /i "%filesize%" NEQ "%filesize2%" goto:onemoretime2
set filesize=%filesize:,=%
echo %filesize% bytes
SET /a filesizeMB=%filesize%/1024/1024
echo %filesizeMB% MB
SET /a filesizeGB=%filesize%/1024/1024/1024
echo %filesizeGB% GB
If you use .Net 4.5 you can also use standard .Net json serializer:
using System.Runtime.Serialization.Json;
...
Stream jsonSource = ...; // serializer will read data stream
var s = new DataContractJsonSerializer(typeof(string[][]));
var j = (string[][])s.ReadObject(jsonSource);
In .Net 4.5 and older you can use JavaScriptSerializer class:
using System.Web.Script.Serialization;
...
JavaScriptSerializer serializer = new JavaScriptSerializer();
string[][] list = serializer.Deserialize<string[][]>(json);
It is completely fine to leave memory unfreed when you exit; malloc() allocates the memory from the memory area called "the heap", and the complete heap of a process is freed when the process exits.
That being said, one reason why people still insist that it is good to free everything before exiting is that memory debuggers (e.g. valgrind on Linux) detect the unfreed blocks as memory leaks, and if you have also "real" memory leaks, it becomes more difficult to spot them if you also get "fake" results at the end.
There is no default database for user. There is default database for current session.
You can get it using DATABASE() function -
SELECT DATABASE();
And you can set it using USE statement -
USE database1;
You should set it manually - USE db_name
, or in the connection string.
You are looking for the command scandir.
$path = '/tmp';
$files = scandir($path);
Following code will remove .
and ..
from the returned array from scandir
:
$files = array_diff(scandir($path), array('.', '..'));
There is no automated uninstaller.
You have to remove Eclipse manually. At least Eclipse does not write anything in the system registry, so deleting some directories and files is enough.
Note: I use Unix style paths in this answer but the locations should be the same on Windows or Unix systems, so ~
refers to the user home directory even on Windows.
According to this discussion about uninstalling Eclipse, the reasoning for not providing an uninstaller is that the Eclipse installer is supposed to just automate a few tasks that in the past had to be done manually (like downloading and extracting Eclipse and adding shortcuts), so they also can be undone manually. There is no entry in "Programs and Features" because the installer does not register anything in the system registry.
Just delete the Eclipse directory and any desktop and start menu shortcuts and be done with it, if you don't mind a few leftover files.
In my opinion this is generally enough and I would stop here, because multiple Eclipse installations can share some files and you don't accidentally want to delete those shared files. You also keep all your projects.
If you really want to remove Eclipse without leaving any traces, you have to manually delete
~/eclipse/photon/
)The installer has a "Bundle Pools" menu entry which lists the locations of all bundle pools. If you have other Eclipse installations on your system you can use the "Cleanup Agent" to clean up unused bundles. If you don't have any other Eclipse installations you can delete the whole bundle pool directory instead (by default ~/p2/
).
If you want to completely remove the Eclipse installer too, delete the installer's executable and the ~/.eclipse/
directory.
Depending on what kind of work you did with Eclipse, there can be more directories that you may want to delete. If you used Maven, then ~/.m2/
contains the Maven cache and settings (shared with Maven CLI and other IDEs). If you develop Eclipse plugins, then there might be JUnit workspaces from test runs, next to you Eclipse workspace. Likewise other build tools and development environments used in Eclipse could have created similar directories.
If you want to delete your projects and workspace metadata, you have to delete your workspace(s). The default workspace location is ´~/workspace/´. You can also search for the .metadata
directory to get all Eclipse workspaces on your machine.
If you are working with Git projects, these are generally not saved in the workspace but in the ~/git/
directory.
jQuery $.extend(obj1, obj2)
would merge 2 objects for you, but you should really be using an array.
var alertsObj = {
1: {app:'helloworld','message'},
2: {app:'helloagain',message:'another message'}
};
var alertArr = [
{app:'helloworld','message'},
{app:'helloagain',message:'another message'}
];
var newAlert = {app:'new',message:'message'};
$.extend(alertsObj, newAlert);
alertArr.push(newAlert);
It is actually very simple,
php -q /home/username/public_html/cron/cron.php
Remove the z-index value.
I would also recommend this approach.
HTML:
<header class="main-header" role="banner">
<img src="mybannerimage.gif" alt="Banner Image"/>
</header>
CSS:
.main-header {
text-align: center;
}
This will center your image with out stretching it out. You can adjust the padding as needed to give it some space around your image. Since this is at the top of your page you don't need to force it there with position absolute unless you want your other elements to go underneath it. In that case you'd probably want position:fixed; anyway.
As many people here have pointed out, arrays in C#, as well as in most other common languages, are statically sized. If you're looking for something more like PHP's arrays, which I'm just going to guess you are, since it's a popular language with dynamically sized (and typed!) arrays, you should use an ArrayList:
var mahByteArray = new ArrayList<byte>();
If you have a byte array from elsewhere, you can use the AddRange function.
mahByteArray.AddRange(mahOldByteArray);
Then you can use Add() and Insert() to add elements.
mahByteArray.Add(0x00); // Adds 0x00 to the end.
mahByteArray.Insert(0, 0xCA) // Adds 0xCA to the beginning.
Need it back in an array? .ToArray() has you covered!
mahOldByteArray = mahByteArray.ToArray();
The '\r'
character is the carriage return, and the carriage return-newline pair is both needed for newline in a network virtual terminal session.
From the old telnet specification (RFC 854) (page 11):
The sequence "CR LF", as defined, will cause the NVT to be positioned at the left margin of the next print line (as would, for example, the sequence "LF CR").
However, from the latest specification (RFC5198) (page 13):
...
In Net-ASCII, CR MUST NOT appear except when immediately followed by either NUL or LF, with the latter (CR LF) designating the "new line" function. Today and as specified above, CR should generally appear only when followed by LF. Because page layout is better done in other ways, because NUL has a special interpretation in some programming languages, and to avoid other types of confusion, CR NUL should preferably be avoided as specified above.
LF CR SHOULD NOT appear except as a side-effect of multiple CR LF sequences (e.g., CR LF CR LF).
So newline in Telnet should always be '\r\n'
but most implementations have either not been updated, or keeps the old '\n\r'
for backwards compatibility.
Using a guid
SELECT @randomString = CONVERT(varchar(255), NEWID())
very short ...
The const
variable specifies whether a variable is modifiable or not. The constant value assigned will be used each time the variable is referenced. The value assigned cannot be modified during program execution.
Bjarne Stroustrup's explanation sums it up briefly:
A class is typically declared in a header file and a header file is typically included into many translation units. However, to avoid complicated linker rules, C++ requires that every object has a unique definition. That rule would be broken if C++ allowed in-class definition of entities that needed to be stored in memory as objects.
A const
variable has to be declared within the class, but it cannot be defined in it. We need to define the const variable outside the class.
T1() : t( 100 ){}
Here the assignment t = 100
happens in initializer list, much before the class initilization occurs.
dt
is nullable
you need to access its Value
if (datetime.HasValue)
dt = datetime.Value;
It is important to remember that it can be NULL
. That is why the nullable
struct has the HasValue
property that tells you if it is NULL
or not.
You can also use the null-coalescing operator
??
to assign a default value
dt = datetime ?? DateTime.Now;
This will assign the value on the right if the value on the left is NULL
The accepted answer will return all the parent nodes too. To get only the actual nodes with ABC even if the string is after
:
//*[text()[contains(.,'ABC')]]/text()[contains(.,"ABC")]
As of git version 2.13, git supports conditional configuration includes. In this example we clone Company A's repos in ~/company_a
directory, and Company B's repos in ~/company_b
.
In your .gitconfig
you can put something like this.
[includeIf "gitdir:~/company_a/"]
path = .gitconfig-company_a
[includeIf "gitdir:~/company_b/"]
path = .gitconfig-company_b
Example contents of .gitconfig-company_a
[user]
name = John Smith
email = [email protected]
Example contents of .gitconfig-company_b
[user]
name = John Smith
email = [email protected]
Allowed only characters & spaces. Ex : Jayant Lonari
if (!/^[a-zA-Z\s]+$/.test(NAME)) {
//Throw Error
}
If the list is in random order, you can just take the first 50.
Otherwise, use
import random
random.sample(the_list, 50)
random.sample
help text:
sample(self, population, k) method of random.Random instance
Chooses k unique random elements from a population sequence.
Returns a new list containing elements from the population while
leaving the original population unchanged. The resulting list is
in selection order so that all sub-slices will also be valid random
samples. This allows raffle winners (the sample) to be partitioned
into grand prize and second place winners (the subslices).
Members of the population need not be hashable or unique. If the
population contains repeats, then each occurrence is a possible
selection in the sample.
To choose a sample in a range of integers, use xrange as an argument.
This is especially fast and space efficient for sampling from a
large population: sample(xrange(10000000), 60)
If the maximum number of digits in the counter is known (e.g., n = 3 for counters 1..876), you can do
str = "file_" + i.to_s.rjust(n, "0")
You could just do:
Serial.println("\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n");
or if you want:
for (int i=0; i<100; i++) {
Serial.print("\n");
}
this.marker = new google.maps.Marker({
position: new google.maps.LatLng(12.924640523603115,77.61965398949724),
map: map
});
this.placeMarker(coordinates, this.map);
placeMarker(location, map) {
var marker = new google.maps.Marker({
position: location,
map: map
});
this.markersArray.push(marker);
}
I found out this was the easiest way to get access to the clipboard from python:
1) Install pyperclip:
pip install pyperclip
2) Usage:
import pyperclip
s = pyperclip.paste()
pyperclip.copy(s)
# the type of s is string
Tested on Win10 64-bit, Python 3.5 and Python 3.7.3 (64-bit). Seems to work with non-ASCII characters, too. Tested characters include ±°©©aß????Fåäö
with open('target.txt','w') as out:
line1 = raw_input("line 1: ")
line2 = raw_input("line 2: ")
line3 = raw_input("line 3: ")
print("I'm going to write these to the file.")
out.write('{}\n{}\n{}\n'.format(line1,line2,line3))
In my experience all the files which i have downloaded from internet,gmail
are stored in
/sdcard/download
on ics
/sdcard/Download
You can access it using
Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
As the instruction said "might need gpg2"
In mac, you can try install it with homebrew
$ brew install gpg2
I'm using this one (using StringUtils from commons-lang):
Double qty = 1.01;
String res = String.format(Locale.GERMANY, "%.2f", qty);
String fmt = StringUtils.removeEnd(res, ",00");
You must only take care of the locale and the corresponding String to chop.
Be warned, each time the file is opened with this method the old data in the file is destroyed regardless of 'w+' or just 'w'.
import os
with open("file.txt", 'w+') as f:
f.write("file is opened for business")
Please refer below TSQL. STRING_SPLIT function is available only under compatibility level 130 and above.
TSQL:
DECLARE @stringValue NVARCHAR(400) = 'red,blue,green,yellow,black'
DECLARE @separator CHAR = ','
SELECT [value] As Colour
FROM STRING_SPLIT(@stringValue, @separator);
RESULT:
red blue green yellow black
https://golang.org/ref/spec#Numeric_types for physical type limits.
The max values are defined in the math package so in your case: math.MaxUint32
Watch out as there is no overflow - incrementing past max causes wraparound.
Maybe you'll also want decimal separator? Here is a function I just made:
function formatFloat(num,casasDec,sepDecimal,sepMilhar) {
if (num < 0)
{
num = -num;
sinal = -1;
} else
sinal = 1;
var resposta = "";
var part = "";
if (num != Math.floor(num)) // decimal values present
{
part = Math.round((num-Math.floor(num))*Math.pow(10,casasDec)).toString(); // transforms decimal part into integer (rounded)
while (part.length < casasDec)
part = '0'+part;
if (casasDec > 0)
{
resposta = sepDecimal+part;
num = Math.floor(num);
} else
num = Math.round(num);
} // end of decimal part
while (num > 0) // integer part
{
part = (num - Math.floor(num/1000)*1000).toString(); // part = three less significant digits
num = Math.floor(num/1000);
if (num > 0)
while (part.length < 3) // 123.023.123 if sepMilhar = '.'
part = '0'+part; // 023
resposta = part+resposta;
if (num > 0)
resposta = sepMilhar+resposta;
}
if (sinal < 0)
resposta = '-'+resposta;
return resposta;
}
Well Facebook has undergone MANY many changes and it wasn't originally designed to be efficient. It was designed to do it's job. I have absolutely no idea what the code looks like and you probably won't find much info about it (for obvious security and copyright reasons), but just take a look at the API. Look at how often it changes and how much of it doesn't work properly, anymore, or at all.
I think the biggest ace up their sleeve is the Hiphop. http://developers.facebook.com/blog/post/358 You can use HipHop yourself: https://github.com/facebook/hiphop-php/wiki
But if you ask me it's a very ambitious and probably time wasting task. Hiphop only supports so much, it can't simply convert everything to C++. So what does this tell us? Well, it tells us that Facebook is NOT fully taking advantage of the PHP language. It's not using the latest 5.3 and I'm willing to bet there's still a lot that is PHP 4 compatible. Otherwise, they couldn't use HipHop. HipHop IS A GOOD IDEA and needs to grow and expand, but in it's current state it's not really useful for that many people who are building NEW PHP apps.
There's also PHP to JAVA via things like Resin/Quercus. Again, it doesn't support everything...
Another thing to note is that if you use any non-standard PHP module, you aren't going to be able to convert that code to C++ or Java either. However...Let's take a look at PHP modules. They are ARE compiled in C++. So if you can build PHP modules that do things (like parse XML, etc.) then you are basically (minus some interaction) working at the same speed. Of course you can't just make a PHP module for every possible need and your entire app because you would have to recompile and it would be much more difficult to code, etc.
However...There are some handy PHP modules that can help with speed concerns. Though at the end of the day, we have this awesome thing known as "the cloud" and with it, we can scale our applications (PHP included) so it doesn't matter as much anymore. Hardware is becoming cheaper and cheaper. Amazon just lowered it's prices (again) speaking of.
So as long as you code your PHP app around the idea that it will need to one day scale...Then I think you're fine and I'm not really sure I'd even look at Facebook and what they did because when they did it, it was a completely different world and now trying to hold up that infrastructure and maintain it...Well, you get things like HipHop.
Now how is HipHop going to help you? It won't. It can't. You're starting fresh, you can use PHP 5.3. I'd highly recommend looking into PHP 5.3 frameworks and all the new benefits that PHP 5.3 brings to the table along with the SPL libraries and also think about your database too. You're most likely serving up content from a database, so check out MongoDB and other types of databases that are schema-less and document-oriented. They are much much faster and better for the most "common" type of web site/app.
Look at NEW companies like Foursquare and Smugmug and some other companies that are utilizing NEW technology and HOW they are using it. For as successful as Facebook is, I honestly would not look at them for "how" to build an efficient web site/app. I'm not saying they don't have very (very) talented people that work there that are solving (their) problems creatively...I'm also not saying that Facebook isn't a great idea in general and that it's not successful and that you shouldn't get ideas from it....I'm just saying that if you could view their entire source code, you probably wouldn't benefit from it.
image1.parentNode.className+=' box';
image1.parentNode.className+=' box';
_x000D_
.box { width: 100px; height:100px; background: red; }
_x000D_
<div class="someclass">_x000D_
<img ... id="image1" name="image1" />_x000D_
</div>
_x000D_
Dynamitey is an open source .net std
library, that let's you call it like the dynamic
keyword, but using the a string for the property name rather than the compiler doing it for you, and it ends up being equal to reflection speedwise (which is not nearly as fast as using the dynamic keyword, but this is due to the extra overhead of caching dynamically, where the compiler caches statically).
Dynamic.InvokeGet(d,"value2");
Here is a simple example!
#include <iostream>
#include <fstream>
using namespace std;
void main(){
SearchFile("test.txt");
}
bool SearchFile(const char *file)
{
ifstream infile(file);
if (!infile.good())
{
// If file is not there
exit(1);
}
}
No comma after the last property.
Semicolon after alert(date);
Case on datepicker (not datePicker)
Check your other uppercase / lowercase for the properties.
$(function() {
$('.date-pick').datepicker( {
onSelect: function(date) {
alert(date);
},
selectWeek: true,
inline: true,
startDate: '01/01/2000',
firstDay: 1
});
});
This question has been answered, but maybe this might someone else coming here.
I also had an issue where this
is undefined, when I was foolishly trying to destructure the methods of a class when initialising it:
import MyClass from "./myClass"
// 'this' is not defined here:
const { aMethod } = new MyClass()
aMethod() // error: 'this' is not defined
// So instead, init as you would normally:
const myClass = new MyClass()
myClass.aMethod() // OK
As GTalk
is gone from the SDK, it might be a good idea to make a 'standard' push messaging system. That way, only one service has to run, only one extra tcp connection needs to be open. Applications should talk to this service using Intents
and should first request permission to send and receive notification from the service. The service should then notify the user a new application wants to send and receive messages. The user will then grant or deny permission, so he stays in control. The application will then register an action + category to the service, so the service knows how to deliver the pushed message.
Would the a good idea or not?
do adb pull \sdcard\log.txt C:Users\admin\Desktop
I like your answers a lot. It made working from cygwin / linux
hosts a lot easier. I combined start and end functions to make it secure.
SSH_ENV="$HOME/.ssh/.agent_env"
function start_agent {
echo "Initialising new SSH agent..."
eval `/usr/bin/ssh-agent`
echo 'export SSH_AUTH_SOCK'=$SSH_AUTH_SOCK >> ${SSH_ENV}
echo 'export SSH_AGENT_PID'=$SSH_AGENT_PID >> ${SSH_ENV}
echo succeeded
chmod 600 "${SSH_ENV}"
. "${SSH_ENV}" > /dev/null
/usr/bin/ssh-add;
}
# Source SSH settings, if applicable
if [ -f "${SSH_ENV}" ]; then
. "${SSH_ENV}" > /dev/null
#ps ${SSH_AGENT_PID} doesn't work under cywgin
ps -ef | grep ${SSH_AGENT_PID} | grep ssh-agent$ > /dev/null || {
start_agent;
}
else
start_agent;
fi
# create our own hardlink to the socket (with random name)
MYSOCK=/tmp/ssh_agent.${RANDOM}.sock
ln -T $SSH_AUTH_SOCK $MYSOCK
export SSH_AUTH_SOCK=$MYSOCK
end_agent()
{
# if we are the last holder of a hardlink, then kill the agent
nhard=`ls -l $SSH_AUTH_SOCK | awk '{print $2}'`
if [[ "$nhard" -eq 2 ]]; then
rm ${SSH_ENV}
/usr/bin/ssh-agent -k
fi
rm $SSH_AUTH_SOCK
}
trap end_agent EXIT
set +x
Once you've added your listbox item to your form, change DrawMode with OwnerDrawFixed option from the Properties panel. If you forget to do this, none of the codes below will work. Then click DrawItem event from the Events area.
private void listBox1_DrawItem(object sender, DrawItemEventArgs e)
{
// 1. Get the item
string selectedItem = listBox1.Items[e.Index].ToString();
// 2. Choose font
Font font = new Font("Arial", 12);
// 3. Choose colour
SolidBrush solidBrush = new SolidBrush(Color.Red);
// 4. Get bounds
int left = e.Bounds.Left;
int top = e.Bounds.Top;
// 5. Use Draw the background within the bounds
e.DrawBackground();
// 6. Colorize listbox items
e.Graphics.DrawString(selectedItem, font, solidBrush, left, top);
}
My guess is that you've got something in method1
which wraps one exception in another, and uses the toString()
of the nested exception as the message of the wrapper. I suggest you take a copy of your project, and remove as much as you can while keeping the problem, until you've got a short but complete program which demonstrates it - at which point either it'll be clear what's going on, or we'll be in a better position to help fix it.
Here's a short but complete program which demonstrates RuntimeException.getMessage()
behaving correctly:
public class Test {
public static void main(String[] args) {
try {
failingMethod();
} catch (Exception e) {
System.out.println("Error: " + e.getMessage());
}
}
private static void failingMethod() {
throw new RuntimeException("Just the message");
}
}
Output:
Error: Just the message
In my case, I read the registry that npm using:
npm config get registry
and I got
http://registry.npmjs.org/
then I had just changed http
to https
like this:
npm config set registry https://registry.npmjs.org/
Like Moneypenny said in Skyfall: "Sometimes the old ways are best." Kincade said something similar later on.
$ printf ',s/false/true/g\nw\n' | ed {YourFileHere}
Happy editing in place. Added '\nw\n' to write the file. Apologies for delay answering request.
Kernel Space and User Space are logical spaces.
Most of the modern processors are designed to run in different privileged mode. x86 machines can run in 4 different privileged modes.
And a particular machine instruction can be executed when in/above particular privileged mode.
Because of this design you are giving a system protection or sand-boxing the execution environment.
Kernel is a piece of code, which manages your hardware and provide system abstraction. So it needs to have access for all the machine instruction. And it is most trusted piece of software. So i should be executed with the highest privilege. And Ring level 0 is the most privileged mode. So Ring Level 0 is also called as Kernel Mode.
User Application are piece of software which comes from any third party vendor, and you can't completely trust them. Someone with malicious intent can write a code to crash your system if he had complete access to all the machine instruction. So application should be provided with access to limited set of instructions. And Ring Level 3 is the least privileged mode. So all your application run in that mode. Hence that Ring Level 3 is also called User Mode.
Note: I am not getting Ring Levels 1 and 2. They are basically modes with intermediate privilege. So may be device driver code are executed with this privilege. AFAIK, linux uses only Ring Level 0 and 3 for kernel code execution and user application respectively.
So any operation happening in kernel mode can be considered as kernel space. And any operation happening in user mode can be considered as user space.
Try one of the following, depending on your image format:
UIImageJPEGRepresentation
Returns the data for the specified image in JPEG format.
NSData * UIImageJPEGRepresentation (
UIImage *image,
CGFloat compressionQuality
);
UIImagePNGRepresentation
Returns the data for the specified image in PNG format
NSData * UIImagePNGRepresentation (
UIImage *image
);
EDIT:
if you want to access the raw bytes that make up the UIImage, you could use this approach:
CGDataProviderRef provider = CGImageGetDataProvider(image.CGImage);
NSData* data = (id)CFBridgingRelease(CGDataProviderCopyData(provider));
const uint8_t* bytes = [data bytes];
This will give you the low-level representation of the image RGB pixels.
(Omit the CFBridgingRelease
bit if you are not using ARC).
here $key will contain the $key associated with $value in $featured. The difference is that now you have that key.
array("thekey"=>array("name"=>"joe"))
here $value is
array("name"=>"joe")
$key is "thekey"
You cannot read text strings with csvread. Here is another solution:
fid1 = fopen('test.csv','r'); %# open csv file for reading
fid2 = fopen('new.csv','w'); %# open new csv file
while ~feof(fid1)
line = fgets(fid1); %# read line by line
A = sscanf(line,'%*[^,],%f,%f'); %# sscanf can read only numeric data :(
if A(2)<4.185 %# test the values
fprintf(fid2,'%s',line); %# write the line to the new file
end
end
fclose(fid1);
fclose(fid2);
You can define style rules which only apply to specific elements inside your div
with id divContainer
like this:
#divContainer input { ... }
#divContainer input[type="radio"] { ... }
#divContainer input[type="text"] { ... }
/* etc */
bind
is deprecated. Use on
:
$("#textarea").on('change keyup paste', function() {
// your code here
});
Note: The code above will fire multiple times, once for each matching trigger-type. To handle that, do something like this:
var oldVal = "";
$("#textarea").on("change keyup paste", function() {
var currentVal = $(this).val();
if(currentVal == oldVal) {
return; //check to prevent multiple simultaneous triggers
}
oldVal = currentVal;
//action to be performed on textarea changed
alert("changed!");
});
I have tried this
C:\Users\radhason\AppData\Local\NetBeans\Cache
Press Ok button , then cache folder will be shown and delete this cache folder of netbeans.
Simple copy & paste example with subqueries, Note, that both queries should return 1 row:
select
(select sum(items_1) from items_table_1 where ...)
-
(select count(items_2) from items_table_1 where ...)
as difference
$_
last argument of last command$#
number of arguments passed to current script$*
/ $@
list of arguments passed to script as string / delimited listoff the top of my head. Google for bash special variables.
I'm learning Algorithm right now, so i wonder how bisect module writes. Here is the code from bisect module about inserting an item into sorted list, which uses dichotomy:
def insort_right(a, x, lo=0, hi=None):
"""Insert item x in list a, and keep it sorted assuming a is sorted.
If x is already in a, insert it to the right of the rightmost x.
Optional args lo (default 0) and hi (default len(a)) bound the
slice of a to be searched.
"""
if lo < 0:
raise ValueError('lo must be non-negative')
if hi is None:
hi = len(a)
while lo < hi:
mid = (lo+hi)//2
if x < a[mid]:
hi = mid
else:
lo = mid+1
a.insert(lo, x)
Don't forget about spaces:
source=""
samples=("")
if [ $1 = "country" ]; then
source="country"
samples="US Canada Mexico..."
else
echo "try again"
fi
Open command prompt, type "systeminfo" and press enter. Your system may take few mins to get the information. In the result page you will find an entry as "System Installation Date". That is the date of windows installation. This process works in XP ,Win7 and also on win8.
Happened to me too when I used this :
class App extends React.Component(){
}
Instead of the right one :
class App extends React.Component{
}
Notice:- () in the first one which is the main cause of this problem
Use the HorizontalAlignment and VerticalAlignment layout properties. They control how an element uses the space it has inside its parent when more room is available than it required by the element.
The width of a StackPanel, for example, will be as wide as the widest element it contains. So, all narrower elements have a bit of excess space. The alignment properties control what the child element does with the extra space.
The default value for both properties is Stretch, so the child element is stretched to fill all available space. Additional options include Left, Center and Right for HorizontalAlignment and Top, Center and Bottom for VerticalAlignment.
The 2nd line should be written as:
$form.append('<input type="button" value="button">');
Here are the JavaScript notations for most common vendors:
webkitProperty
MozProperty
msProperty
OProperty
property
I reset inline transform styles like:
element.style.webkitTransform = "";
element.style.MozTransform = "";
element.style.msTransform = "";
element.style.OTransform = "";
element.style.transform = "";
And like this using jQuery:
$(element).css({
"webkitTransform":"",
"MozTransform":"",
"msTransform":"",
"OTransform":"",
"transform":""
});
See blog post Coding Vendor Prefixes with JavaScript (2012-03-21).
I would pick the if statement for the sake of clarity and convention, although I'm sure that some would disagree. After all, you are wanting to do something if
some condition is true! Having a switch with one action seems a little... unneccesary.
This depends a bit from your package system ... if the java
command works, you can type readlink -f $(which java)
to find the location of the java command. On the OpenSUSE system I'm on now it returns /usr/lib64/jvm/java-1.6.0-openjdk-1.6.0/jre/bin/java
(but this is not a system which uses apt-get
).
On Ubuntu, it looks like it is in /usr/lib/jvm/java-6-openjdk/
for OpenJDK, and in some other subdirectory of /usr/lib/jvm/
for Suns JDK (and other implementations as well, I think).
For any given package you can determine what files it installs and where it installs them by querying dpkg. For example for the package 'openjdk-6-jdk': dpkg -L openjdk-6-jdk
According to docker docs,
Both CMD and ENTRYPOINT instructions define what command gets executed when running a container. There are few rules that describe their co-operation.
- Dockerfile should specify at least one of
CMD
orENTRYPOINT
commands.ENTRYPOINT
should be defined when using the container as an executable.CMD
should be used as a way of defining default arguments for anENTRYPOINT
command or for executing an ad-hoc command in a container.CMD
will be overridden when running the container with alternative arguments.
The tables below shows what command is executed for different ENTRYPOINT
/ CMD
combinations:
-- No ENTRYPOINT
+----------------------------------------------------------+
¦ No CMD ¦ error, not allowed ¦
¦----------------------------+-----------------------------¦
¦ CMD ["exec_cmd", "p1_cmd"] ¦ exec_cmd p1_cmd ¦
¦----------------------------+-----------------------------¦
¦ CMD ["p1_cmd", "p2_cmd"] ¦ p1_cmd p2_cmd ¦
¦----------------------------+-----------------------------¦
¦ CMD exec_cmd p1_cmd ¦ /bin/sh -c exec_cmd p1_cmd ¦
+----------------------------------------------------------+
-- ENTRYPOINT exec_entry p1_entry
+---------------------------------------------------------------+
¦ No CMD ¦ /bin/sh -c exec_entry p1_entry ¦
¦----------------------------+----------------------------------¦
¦ CMD ["exec_cmd", "p1_cmd"] ¦ /bin/sh -c exec_entry p1_entry ¦
¦----------------------------+----------------------------------¦
¦ CMD ["p1_cmd", "p2_cmd"] ¦ /bin/sh -c exec_entry p1_entry ¦
¦----------------------------+----------------------------------¦
¦ CMD exec_cmd p1_cmd ¦ /bin/sh -c exec_entry p1_entry ¦
+---------------------------------------------------------------+
-- ENTRYPOINT ["exec_entry", "p1_entry"]
+------------------------------------------------------------------------------+
¦ No CMD ¦ exec_entry p1_entry ¦
¦----------------------------+-------------------------------------------------¦
¦ CMD ["exec_cmd", "p1_cmd"] ¦ exec_entry p1_entry exec_cmd p1_cmd ¦
¦----------------------------+-------------------------------------------------¦
¦ CMD ["p1_cmd", "p2_cmd"] ¦ exec_entry p1_entry p1_cmd p2_cmd ¦
¦----------------------------+-------------------------------------------------¦
¦ CMD exec_cmd p1_cmd ¦ exec_entry p1_entry /bin/sh -c exec_cmd p1_cmd ¦
+------------------------------------------------------------------------------+
Beware of an undo-tree quirk for redo!
Many popular “starter kits” (prelude, purcell, spacemacs) come bundled with undo-tree. Most (all?) even auto-enable it. As mentioned, undo-tree is a handy way to visualize and traverse the undo/redo tree. Prelude even gives it a key-chord (uu
), and also C-x u
.
The problem is: undo-tree seems to wreck Emacs’ default and well-known binding for redo: C-g C-/
.
Instead, you can use these symmetrical keys for undo/redo:
C-/ undo
C-S-/ redo
These are useful since sometimes you want to quickly redo without opening up the visualizer.
Also note that a result code in the second column refers to the properties of the file. For example:
U filename.1
U filename.2
UU filename.3
filename.1: the file was updated
filename.2: a property or properties on the file (such as svn:keywords) was updated
filename.3: both the file and its properties were updated
If you have PHP installed as a command line tool (try issuing php
to the terminal and see if it works), your shebang (#!
) line needs to look like this:
#!/usr/bin/php
Put that at the top of your script, make it executable (chmod +x myscript.php
), and make a Cron job to execute that script (same way you'd execute a bash script).
You can also use php myscript.php
.
Most debugger consoles support displaying objects directly. Just use
console.log(obj);
Depending on your debugger this most likely will display the object in the console as a collapsed tree. You can open the tree and inspect the object.
With some restrictions on your data, you can do it in linear time!
For positive integers: use an array mapping the values to a "seen/not seen" boolean.
function intersectIntegers(array1,array2) {
var seen=[],
result=[];
for (var i = 0; i < array1.length; i++) {
seen[array1[i]] = true;
}
for (var i = 0; i < array2.length; i++) {
if ( seen[array2[i]])
result.push(array2[i]);
}
return result;
}
There is a similar technique for objects: take a dummy key, set it to "true" for each element in array1, then look for this key in elements of array2. Clean up when you're done.
function intersectObjects(array1,array2) {
var result=[];
var key="tmpKey_intersect"
for (var i = 0; i < array1.length; i++) {
array1[i][key] = true;
}
for (var i = 0; i < array2.length; i++) {
if (array2[i][key])
result.push(array2[i]);
}
for (var i = 0; i < array1.length; i++) {
delete array1[i][key];
}
return result;
}
Of course you need to be sure the key didn't appear before, otherwise you'll be destroying your data...
As RocketDonkey suggested, your module itself needs to have some docstrings.
For example, in myModule/__init__.py
:
"""
The mod module
"""
You'd also want to generate documentation for each file in myModule/*.py
using
pydoc myModule.thefilename
to make sure the generated files match the ones that are referenced from the main module documentation file.
It's been more than 8 years, but maybe someone will find it helpful anyway.
I was able to do the trick without rebase -i
.
The idea is to lead git to the same state it was before you did git commit
:
# first rewind back (mind the dot,
# though it can be any valid path,
# for instance if you want to apply only a subset of the commit)
git reset --hard <previous-commit> .
# apply the changes
git checkout <commit-you-want-to-split>
# we're almost there, but the changes are in the index at the moment,
# hence one more step (exactly as git gently suggests):
# (use "git reset HEAD <file>..." to unstage)
git reset
After this you'll see this shiny Unstaged changes after reset:
and your repo is in a state like you're about to commit all these files. From now on you can easily commit it again like you usually do. Hope it helps.
you can use a static array in your method, to avoid lose of your array when your function ends :
char * createStr()
{
char char1= 'm';
char char2= 'y';
static char str[3];
str[0] = char1;
str[1] = char2;
str[2] = '\0';
return str;
}
Edit : As Toby Speight mentioned this approach is not thread safe, and also recalling the function leads to data overwrite that is unwanted in some applications. So you have to save the data in a buffer as soon as you return back from the function. (However because it is not thread safe method, concurrent calls could still make problem in some cases, and to prevent this you have to use lock. capture it when entering the function and release it after copy is done, i prefer not to use this approach because its messy and error prone.)
Here's a method I wrote to check if an URL exists or not. I had a requirement to add a request header. It's Groovy but should be fairly simple to adapt to Java. Essentially I'm using the org.springframework.web.client.RestTemplate#execute(java.lang.String, org.springframework.http.HttpMethod, org.springframework.web.client.RequestCallback, org.springframework.web.client.ResponseExtractor<T>, java.lang.Object...)
API method. I guess the solution you arrive at depends at least in part on the HTTP method you want to execute. The key take away from example below is that I'm passing a Groovy closure (The third parameter to method restTemplate.execute()
, which is more or less, loosely speaking a Lambda in Java world) that is executed by the Spring API as a callback to be able to manipulate the request object before Spring executes the command,
boolean isUrlExists(String url) {
try {
return (restTemplate.execute(url, HttpMethod.HEAD,
{ ClientHttpRequest request -> request.headers.add('header-name', 'header-value') },
{ ClientHttpResponse response -> response.headers }) as HttpHeaders)?.get('some-response-header-name')?.contains('some-response-header-value')
} catch (Exception e) {
log.warn("Problem checking if $url exists", e)
}
false
}
You might need to do some checking. You cannot safely convert factors directly to numeric. as.character
must be applied first. Otherwise, the factors will be converted to their numeric storage values. I would check each column with is.factor
then coerce to numeric as necessary.
df1[] <- lapply(df1, function(x) {
if(is.factor(x)) as.numeric(as.character(x)) else x
})
sapply(df1, class)
# a b
# "numeric" "numeric"
In addition to bvamos's answer, according to the documentation the use of sem
is deprecated :
NAME ipcrm - remove a message queue, semaphore set or shared memory id SYNOPSIS ipcrm [ -M key | -m id | -Q key | -q id | -S key | -s id ] ... deprecated usage
ipcrm [ shm | msg | sem ] id ...
remove shared memory
us ipcrm -m
to remove a shared memory segment by the id
#!/bin/bash
set IPCS_M = ipcs -m | egrep "0x[0-9a-f]+ [0-9]+" | grep $USERNAME | cut -f2 -d" "
for id in $IPCS_M; do
ipcrm -m $id;
done
or ipcrm -M
to remove a shared memory segment by the key
#!/bin/bash
set IPCS_M = ipcs -m | egrep "0x[0-9a-f]+ [0-9]+" | grep $USERNAME | cut -f1 -d" "
for id in $IPCS_M; do
ipcrm -M $id;
done
remove message queues
us ipcrm -q
to remove a shared memory segment by the id
#!/bin/bash
set IPCS_Q = ipcs -q | egrep "0x[0-9a-f]+ [0-9]+" | grep $USERNAME | cut -f2 -d" "
for id in $IPCS_Q; do
ipcrm -q $id;
done
or ipcrm -Q
to remove a shared memory segment by the key
#!/bin/bash
set IPCS_Q = ipcs -q | egrep "0x[0-9a-f]+ [0-9]+" | grep $USERNAME | cut -f1 -d" "
for id in $IPCS_Q; do
ipcrm -Q $id;
done
remove semaphores
us ipcrm -s
to remove a semaphore segment by the id
#!/bin/bash
set IPCS_S = ipcs -s | egrep "0x[0-9a-f]+ [0-9]+" | grep $USERNAME | cut -f2 -d" "
for id in $IPCS_S; do
ipcrm -s $id;
done
or ipcrm -S
to remove a semaphore segment by the key
#!/bin/bash
set IPCS_S = ipcs -s | egrep "0x[0-9a-f]+ [0-9]+" | grep $USERNAME | cut -f1 -d" "
for id in $IPCS_S; do
ipcrm -S $id;
done
I don't have the reputation yet to up vote Steve's suggestion, but it solved my problem.
In my case, I received this error because the two table where created using different database engines--one was Innodb and the other MyISAM.
You can change the database type using : ALTER TABLE t ENGINE = MYISAM;
@see http://dev.mysql.com/doc/refman/5.1/en/storage-engine-setting.html
Only Double and Float type support POSITIVE_INFINITY
constant.
It is not necessary to stop timer, see nice solution from this post:
"You could let the timer continue firing the callback method but wrap your non-reentrant code in a Monitor.TryEnter/Exit. No need to stop/restart the timer in that case; overlapping calls will not acquire the lock and return immediately."
private void CreatorLoop(object state)
{
if (Monitor.TryEnter(lockObject))
{
try
{
// Work here
}
finally
{
Monitor.Exit(lockObject);
}
}
}
This is a bit outside the scope of your question, but to avoid any potential confusion for readers who are new to VBA: End
and End Sub
are not the same. They don't perform the same task.
End
puts a stop to ALL code execution and you should almost always use Exit Sub
(or Exit Function
, respectively).
End halts ALL exectution. While this sounds tempting to do it also clears all global and static variables. (source)
See also the MSDN dox for the End Statement
When executed, the
End
statement resets allmodule-level variables and all static local variables in allmodules. To preserve the value of these variables, use theStop
statement instead. You can then resume execution while preserving the value of those variables.Note The
End
statement stops code execution abruptly, without invoking the Unload, QueryUnload, or Terminate event, or any other Visual Basic code. Code you have placed in the Unload, QueryUnload, and Terminate events offorms andclass modules is not executed. Objects created from class modules are destroyed, files opened using the Open statement are closed, and memory used by your program is freed. Object references held by other programs are invalidated.
Nor is End Sub
and Exit Sub
the same. End Sub
can't be called in the same way Exit Sub
can be, because the compiler doesn't allow it.
This again means you have to Exit Sub
, which is a perfectly legal operation:
Exit Sub
Immediately exits the Sub procedure in which it appears. Execution continues with the statement following the statement that called the Sub procedure. Exit Sub can be used only inside a Sub procedure.
Additionally, and once you get the feel for how procedures work, obviously, End Sub
does not clear any global variables. But it does clear local (Dim'd) variables:
End Sub
Terminates the definition of this procedure.
here is the simplest session code using php. We are using 3 files.
login.php
<?php session_start(); // session starts with the help of this function
if(isset($_SESSION['use'])) // Checking whether the session is already there or not if
// true then header redirect it to the home page directly
{
header("Location:home.php");
}
if(isset($_POST['login'])) // it checks whether the user clicked login button or not
{
$user = $_POST['user'];
$pass = $_POST['pass'];
if($user == "Ank" && $pass == "1234") // username is set to "Ank" and Password
{ // is 1234 by default
$_SESSION['use']=$user;
echo '<script type="text/javascript"> window.open("home.php","_self");</script>'; // On Successful Login redirects to home.php
}
else
{
echo "invalid UserName or Password";
}
}
?>
<html>
<head>
<title> Login Page </title>
</head>
<body>
<form action="" method="post">
<table width="200" border="0">
<tr>
<td> UserName</td>
<td> <input type="text" name="user" > </td>
</tr>
<tr>
<td> PassWord </td>
<td><input type="password" name="pass"></td>
</tr>
<tr>
<td> <input type="submit" name="login" value="LOGIN"></td>
<td></td>
</tr>
</table>
</form>
</body>
</html>
home.php
<?php session_start(); ?>
<html>
<head>
<title> Home </title>
</head>
<body>
<?php
if(!isset($_SESSION['use'])) // If session is not set then redirect to Login Page
{
header("Location:Login.php");
}
echo $_SESSION['use'];
echo "Login Success";
echo "<a href='logout.php'> Logout</a> ";
?>
</body>
</html>
logout.php
<?php
session_start();
echo "Logout Successfully ";
session_destroy(); // function that Destroys Session
header("Location: Login.php");
?>
This has been discussed on SO multiple times. Here are a few links to get you started:
SO: Capturing image from webcam in java?
openCVF applet: http://www.colorfulwolf.com/blog/2011/07/05/accessing-the-webcam-from-inside-a-java-applet/
config: http://ganeshtiwaridotcomdotnp.blogspot.in/2011/12/opencv-javacv-eclipse-project.html
You need to use WITH ROLLBACK IMMEDIATE
to boot other conections out with no regards to what or who is is already using it.
Or use WITH NO_WAIT
to not hang and not kill existing connections. See http://www.blackwasp.co.uk/SQLOffline.aspx for details
Normally you can set up a git repo by just using the init
command
git init
In your case, there is already a repo on a remote available. Dependent on how you access your remote repo ( with username inside the url or a ssh key which handles verification ) use just the clone
command:
git clone git@[my.url.com]:[git-repo-name].git
There are also other ways to clone the repo. This way you call it if you have a ssh key setup on your machine which verifies on pulling your repository. There are other combinations of the url if you want to include your password and username inside to login into your remote repository.
I think you can also use BufferedWriter :
BufferedWriter writer = new BufferedWriter(new FileWriter(new File("note.txt")));
String stuffToWrite = info;
writer.write(stuffToWrite);
writer.close();
and before that remember too add
import java.io.BufferedWriter;
Try if that works
sc = spark.sparkContext
# Infer the schema, and register the DataFrame as a table.
schemaPeople = spark.createDataFrame(RddName)
schemaPeople.createOrReplaceTempView("RddName")
For me the easiest way is to take all the values returned by image.shape:
height, width, channels = img.shape
if you don't want the number of channels (useful to determine if the image is bgr or grayscale) just drop the value:
height, width, _ = img.shape
The only portable way to achieve consistency between rooms and tags and making sure rooms are never returned after they had been deleted is locking them with SELECT FOR UPDATE
.
However in some systems locking is a side effect of concurrency control, and you achieve the same results without specifying FOR UPDATE
explicitly.
To solve this problem, Thread 1 should
SELECT id FROM rooms FOR UPDATE
, thereby preventing Thread 2 from deleting fromrooms
until Thread 1 is done. Is that correct?
This depends on the concurrency control your database system is using.
MyISAM
in MySQL
(and several other old systems) does lock the whole table for the duration of a query.
In SQL Server
, SELECT
queries place shared locks on the records / pages / tables they have examined, while DML
queries place update locks (which later get promoted to exclusive or demoted to shared locks). Exclusive locks are incompatible with shared locks, so either SELECT
or DELETE
query will lock until another session commits.
In databases which use MVCC
(like Oracle
, PostgreSQL
, MySQL
with InnoDB
), a DML
query creates a copy of the record (in one or another way) and generally readers do not block writers and vice versa. For these databases, a SELECT FOR UPDATE
would come handy: it would lock either SELECT
or the DELETE
query until another session commits, just as SQL Server
does.
When should one use
REPEATABLE_READ
transaction isolation versusREAD_COMMITTED
withSELECT ... FOR UPDATE
?
Generally, REPEATABLE READ
does not forbid phantom rows (rows that appeared or disappeared in another transaction, rather than being modified)
In Oracle
and earlier PostgreSQL
versions, REPEATABLE READ
is actually a synonym for SERIALIZABLE
. Basically, this means that the transaction does not see changes made after it has started. So in this setup, the last Thread 1
query will return the room as if it has never been deleted (which may or may not be what you wanted). If you don't want to show the rooms after they have been deleted, you should lock the rows with SELECT FOR UPDATE
In InnoDB
, REPEATABLE READ
and SERIALIZABLE
are different things: readers in SERIALIZABLE
mode set next-key locks on the records they evaluate, effectively preventing the concurrent DML
on them. So you don't need a SELECT FOR UPDATE
in serializable mode, but do need them in REPEATABLE READ
or READ COMMITED
.
Note that the standard on isolation modes does prescribe that you don't see certain quirks in your queries but does not define how (with locking or with MVCC
or otherwise).
When I say "you don't need SELECT FOR UPDATE
" I really should have added "because of side effects of certain database engine implementation".
TEXT
is a string data type that can store up to 65,535 characters.
But still if you want to store more data then change its data type to LONGTEXT
ALTER TABLE name_tabel
CHANGE text_field
LONGTEXT CHARACTER SET utf8
COLLATE utf8_general_ci
NOT NULL;
According to pydoc, hasattr(obj, prop) simply calls getattr(obj, prop) and catches exceptions. So, it is just as valid to wrap the attribute access with a try statement and catch AttributeError as it is to use hasattr() beforehand.
a = SomeClass()
try:
return a.fake_prop
except AttributeError:
return default_value
Seems reflection only help here.. I've done small example of converting object to dictionary and vise versa:
[TestMethod]
public void DictionaryTest()
{
var item = new SomeCLass { Id = "1", Name = "name1" };
IDictionary<string, object> dict = ObjectToDictionary<SomeCLass>(item);
var obj = ObjectFromDictionary<SomeCLass>(dict);
}
private T ObjectFromDictionary<T>(IDictionary<string, object> dict)
where T : class
{
Type type = typeof(T);
T result = (T)Activator.CreateInstance(type);
foreach (var item in dict)
{
type.GetProperty(item.Key).SetValue(result, item.Value, null);
}
return result;
}
private IDictionary<string, object> ObjectToDictionary<T>(T item)
where T: class
{
Type myObjectType = item.GetType();
IDictionary<string, object> dict = new Dictionary<string, object>();
var indexer = new object[0];
PropertyInfo[] properties = myObjectType.GetProperties();
foreach (var info in properties)
{
var value = info.GetValue(item, indexer);
dict.Add(info.Name, value);
}
return dict;
}
Try this instead in the end:
exec (@query)
If you do not have the brackets, SQL Server assumes the value of the variable to be a stored procedure name.
OR
EXECUTE sp_executesql @query
And it should not be because of FULL JOIN.
But I hope you have already created the temp tables: #TrafficFinal, #TrafficFinal2, #TrafficFinal3 before this.
Please note that there are performance considerations between using EXEC and sp_executesql. Because sp_executesql uses forced statement caching like an sp.
More details here.
On another note, is there a reason why you are using dynamic sql for this case, when you can use the query as is, considering you are not doing any query manipulations and executing it the way it is?
position: absolute
will position the element by coordinates, relative to the closest positioned ancestor, i.e. the closest parent which isn't position: static
.
Have your four divs nested inside the target div, give the target div position: relative
, and use position: absolute
on the others.
Structure your HTML similar to this:
<div id="container">
<div class="top left"></div>
<div class="top right"></div>
<div class="bottom left"></div>
<div class="bottom right"></div>
</div>
And this CSS should work:
#container {
position: relative;
}
#container > * {
position: absolute;
}
.left {
left: 0;
}
.right {
right: 0;
}
.top {
top: 0;
}
.bottom {
bottom: 0;
}
...
I think zeroclipboard is great. this version work with latest Flash 11: http://www.itjungles.com/javascript/javascript-easy-cross-browser-copy-to-clipboard-solution.
Here are some links that I found on face recognition libraries.
Image Identification links:
Whatever your separator is in your ls.dat, you can specify it to gnuplot:
set datafile separator "\t"
I, for example, use fail()
to indicate tests that are not yet finished (it happens); otherwise, they would show as successful.
This is perhaps due to the fact that I am unaware of some sort of incomplete() functionality, which exists in NUnit.
You could try this to dynamically remove an object from an array without looping through it? Where e and t are just random objects.
>>> e = {'b':1, 'w': 2}
>>> t = {'b':1, 'w': 3}
>>> p = [e,t]
>>> p
[{'b': 1, 'w': 2}, {'b': 1, 'w': 3}]
>>>
>>> p.pop(p.index({'b':1, 'w': 3}))
{'b': 1, 'w': 3}
>>> p
[{'b': 1, 'w': 2}]
>>>
Another solution, using jQuery:
$(document).ready(function() {
$("input").keypress(function(e) {
if (e.which == 13) {
$('#submit').click();
return false;
}
return true;
});
});
This should work on the following forms, making "Update" the default action:
<form name="f" method="post" action="/action">
<input type="text" name="text1" />
<input type="submit" name="button2" value="Delete" />
<input type="submit" name="button1" id="submit" value="Update" />
</form>
As well as:
<form name="f" method="post" action="/action">
<input type="text" name="text1" />
<button type="submit" name="button2">Delete</button>
<button type="submit" name="button1" id="submit">Update</button>
</form>
This traps the Enter key only when an input field on the form has focus.
Use square brackets instead of quotation marks:
IF [%1] == [] GOTO MyLabel
Parentheses are insecure: only use square brackets.
def addDay(date, number):
for i in range(number)
#try to add a day
try:
date = date.replace(day = date.day + 1)
#in case it's impossible ex:january 32nd add a month and restart at day 1
except:
#add month part
try:
date = date.replace(month = date.month +1, day = 1)
except:
date = date.replace(year = date.year +1, month = 1, day = 1)
For everyone still reading this post. I think this code is way clearer, especially compared to code using modulo(%).
Sorry for any grammatical error, english is so not my main language
I created a module that works equal to the official Broadcastchannel but has fallbacks based on localstorage, indexeddb and unix-sockets. This makes sure it always works even with Webworkers or NodeJS. See pubkey:BroadcastChannel
Sharing files between a docker container and the host system, or between separate containers is best accomplished using volumes.
Having your app running in another container is probably your best solution since it will ensure that your whole application can be well isolated and easily deployed. What you're trying to do sounds very close to the setup described in this excellent blog post, take a look!
The name
of the Series becomes the index
of the row in the DataFrame:
In [99]: df = pd.DataFrame(np.random.randn(8, 4), columns=['A','B','C','D'])
In [100]: s = df.xs(3)
In [101]: s.name = 10
In [102]: df.append(s)
Out[102]:
A B C D
0 -2.083321 -0.153749 0.174436 1.081056
1 -1.026692 1.495850 -0.025245 -0.171046
2 0.072272 1.218376 1.433281 0.747815
3 -0.940552 0.853073 -0.134842 -0.277135
4 0.478302 -0.599752 -0.080577 0.468618
5 2.609004 -1.679299 -1.593016 1.172298
6 -0.201605 0.406925 1.983177 0.012030
7 1.158530 -2.240124 0.851323 -0.240378
10 -0.940552 0.853073 -0.134842 -0.277135
Which version VirtualBox do you use? I found the same problem and when use update latest version on my X64 win7 machine VirtualBox-4.3.4-91027-Win But I uninstall it and back to VirtualBox-4.2.18-88781-Win
It works well, try it until Oracle fix it.
Try this:
/**
* @(#)demo1.java
*
*
* @author
* @version 1.00 2012/8/30
*/
import java.util.*;
public class demo1
{
Scanner s=new Scanner(System.in);
String str;
int key;
void getdata()
{
System.out.println ("plase enter a string");
str=s.next();
System.out.println ("plase enter a key");
key=s.nextInt();
}
void display()
{
char a;
int j;
for ( int i = 0; i < str.length(); ++i )
{
char c = str.charAt( i );
j = (int) c + key;
a= (char) j;
System.out.print(a);
}
public static void main(String[] args)
{
demo1 obj=new demo1();
obj.getdata();
obj.display();
}
}
}
If you want to always prune
when you fetch
, I can suggest to use Aliases.
Just type git config -e
to open your editor and change the configuration for a specific project and add a section like
[alias]
pfetch = fetch --prune
the when you fetch with git pfetch
the prune will be done automatically.
I would also like to point out that in case you are using command line arguments as part of a shell script (.sh file), then within the script, you would need to enclose the argument in quotes. So if your command looks like
>scriptName.sh arg1 arg2
And arg1 is your path that has spaces, then within the shell script, you would need to refer to it as "$arg1" instead of $arg1