keytool
comes with the JDK installation (in the bin
folder):
keytool -importcert -file "your.cer" -keystore your.jks -alias "<anything>"
This will create a new keystore and add just your certificate to it.
So, you can't convert a certificate to a keystore: you add a certificate to a keystore.
You can bulk import all aliases from one keystore to another:
keytool -importkeystore -srckeystore source.jks -destkeystore dest.jks
Keytool in Java 6 does have this capability: Importing private keys into a Java keystore using keytool
Here are the basic details from that post.
Convert the existing cert to a PKCS12 using OpenSSL. A password is required when asked or the 2nd step will complain.
openssl pkcs12 -export -in [my_certificate.crt] -inkey [my_key.key] -out [keystore.p12] -name [new_alias] -CAfile [my_ca_bundle.crt] -caname root
Convert the PKCS12 to a Java Keystore File.
keytool -importkeystore -deststorepass [new_keystore_pass] -destkeypass [new_key_pass] -destkeystore [keystore.jks] -srckeystore [keystore.p12] -srcstoretype PKCS12 -srcstorepass [pass_used_in_p12_keystore] -alias [alias_used_in_p12_keystore]
Check if password you are using is correct one by running below command
keytool -keypasswd -new temp123 -keystore awsdemo-keystore.jks -storepass temp123 -alias movie-service -keypass changeit
If you are getting below error then your password is wrong
keytool error: java.security.UnrecoverableKeyException: Cannot recover key
One reason to choose .keystore over .jks is that Unity recognizes the former but not the latter when you're navigating to select your keystore file (Unity 2017.3, macOS).
Adding both android:layout_centerInParent
and android:layout_centerVertical
work for me to center ImageView
both vertical and horizontal:
<ImageView
..
android:layout_centerInParent="true"
android:layout_centerVertical="true"
/>
I try to explain it more understandably than the referred PostgreSQL documentation.
Neither TIMESTAMP
variants store a time zone (or an offset), despite what the names suggest. The difference is in the interpretation of the stored data (and in the intended application), not in the storage format itself:
TIMESTAMP WITHOUT TIME ZONE
stores local date-time (aka. wall calendar date and wall clock time). Its time zone is unspecified as far as PostgreSQL can tell (though your application may knows what it is). Hence, PostgreSQL does no time zone related conversion on input or output. If the value was entered into the database as '2011-07-01 06:30:30'
, then no mater in what time zone you display it later, it will still say year 2011, month 07, day 01, 06 hours, 30 minutes, and 30 seconds (in some format). Also, any offset or time zone you specify in the input is ignored by PostgreSQL, so '2011-07-01 06:30:30+00'
and '2011-07-01 06:30:30+05'
are the same as just '2011-07-01 06:30:30'
.
For Java developers: it's analogous to java.time.LocalDateTime
.
TIMESTAMP WITH TIME ZONE
stores a point on the UTC time line. How it looks (how many hours, minutes, etc.) depends on your time zone, but it always refers to the same "physical" instant (like the moment of an actual physical event). The
input is internally converted to UTC, and that's how it's stored. For that, the offset of the input must be known, so when the input contains no explicit offset or time zone (like '2011-07-01 06:30:30'
) it's assumed to be in the current time zone of the PostgreSQL session, otherwise the explicitly specified offset or time zone is used (as in '2011-07-01 06:30:30+05'
). The output is displayed converted to the current time zone of the PostgreSQL session.
For Java developers: It's analogous to java.time.Instant
(with lower resolution though), but with JDBC and JPA 2.2 you are supposed to map it to java.time.OffsetDateTime
(or to java.util.Date
or java.sql.Timestamp
of course).
Some say that both TIMESTAMP
variations store UTC date-time. Kind of, but it's confusing to put it that way in my opinion. TIMESTAMP WITHOUT TIME ZONE
is stored like a TIMESTAMP WITH TIME ZONE
, which rendered with UTC time zone happens to give the same year, month, day, hours, minutes, seconds, and microseconds as they are in the local date-time. But it's not meant to represent the point on the time line that the UTC interpretation says, it's just the way the local date-time fields are encoded. (It's some cluster of dots on the time line, as the real time zone is not UTC; we don't know what it is.)
Also, could be simple as:
if( typeof foo == "function" )
foo();
NSData *data = [strChangetoJSON dataUsingEncoding:NSUTF8StringEncoding];
NSDictionary *jsonResponse = [NSJSONSerialization JSONObjectWithData:data
options:kNilOptions
error:&error];
For example you have a NSString
with special characters in NSString
strChangetoJSON.
Then you can convert that string to JSON response using above code.
in basic way
SELECT *
FROM [TableName]
WHERE column_name!='' AND column_name IS NOT NULL
In Swift 4 and latter
let count = 50//For example
for i in (1...count).reversed() {
print(i)
}
mm
stands for "minutes". Use MM
instead:
SimpleDateFormat sdf1 = new SimpleDateFormat("dd-MM-yyyy");
You can try Pitney Bowes “IdentifyAddress” Api available at - https://identify.pitneybowes.com/
The service analyses and compares the input addresses against the known address databases around the world to output a standardized detail. It corrects addresses, adds missing postal information and formats it using the format preferred by the applicable postal authority. I also uses additional address databases so it can provide enhanced detail, including address quality, type of address, transliteration (such as from Chinese Kanji to Latin characters) and whether an address is validated to the premise/house number, street, or city level of reference information.
You will find a lot of samples and sdk available on the site and i found it extremely easy to integrate.
Do the following steps:
$ docker images
You will get a list of all local Docker images with the tags specified.
$ docker run image_name:tag_name
If you didn't specify tag_name
it will automatically run an image with the 'latest' tag.
Instead of image_name
, you can also specify an image ID (no tag_name).
If you are getting the same error for a project which is actually an extension (.vsix), installing Microsoft Visual Studio 2012 SDK does the trick.
If you're interested in generalizing to different architectures, you could also run the command above and substitute uname -m
in with backticks like so:
wget http://repo.continuum.io/miniconda/Miniconda3-latest-Linux-`uname -m`.sh
I had the same problem. My JDK package pointed by JAVA_HOME didn't have any tools.jar Be sure that your JDK instal.lation has tools.jar
(clearly the message error is confusing)
IF privileges are given to a user through some roles, then below SQL can be used
select * from ROLE_ROLE_PRIVS where ROLE = 'ROLE_NAME';
select * from ROLE_TAB_PRIVS where ROLE = 'ROLE_NAME';
select * from ROLE_SYS_PRIVS where ROLE = 'ROLE_NAME';
This Works
function saveBase64AsFile(base64, fileName) {
var link = document.createElement("a");
document.body.appendChild(link);
link.setAttribute("type", "hidden");
link.href = "data:text/plain;base64," + base64;
link.download = fileName;
link.click();
document.body.removeChild(link);
}
Based on the answer above but with some changes
On Yosemite OSX, use this command:
sed -e 's/^M$//' -i '' filename
where the ^M
sequence is achieved by pressing Ctrl+V then Enter.
This has been a long-standing complaint with Java, but it's largely meaningless, and usually based on looking at the wrong information. The usual phrasing is something like "Hello World on Java takes 10 megabytes! Why does it need that?" Well, here's a way to make Hello World on a 64-bit JVM claim to take over 4 gigabytes ... at least by one form of measurement.
java -Xms1024m -Xmx4096m com.example.Hello
On Linux, the top command gives you several different numbers for memory. Here's what it says about the Hello World example:
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 2120 kgregory 20 0 4373m 15m 7152 S 0 0.2 0:00.10 java
The situation for Windows Task Manager is a bit more complicated. Under Windows XP, there are "Memory Usage" and "Virtual Memory Size" columns, but the official documentation is silent on what they mean. Windows Vista and Windows 7 add more columns, and they're actually documented. Of these, the "Working Set" measurement is the most useful; it roughly corresponds to the sum of RES and SHR on Linux.
The virtual memory consumed by a process is the total of everything that's in the process memory map. This includes data (eg, the Java heap), but also all of the shared libraries and memory-mapped files used by the program. On Linux, you can use the pmap command to see all of the things mapped into the process space (from here on out I'm only going to refer to Linux, because it's what I use; I'm sure there are equivalent tools for Windows). Here's an excerpt from the memory map of the "Hello World" program; the entire memory map is over 100 lines long, and it's not unusual to have a thousand-line list.
0000000040000000 36K r-x-- /usr/local/java/jdk-1.6-x64/bin/java 0000000040108000 8K rwx-- /usr/local/java/jdk-1.6-x64/bin/java 0000000040eba000 676K rwx-- [ anon ] 00000006fae00000 21248K rwx-- [ anon ] 00000006fc2c0000 62720K rwx-- [ anon ] 0000000700000000 699072K rwx-- [ anon ] 000000072aab0000 2097152K rwx-- [ anon ] 00000007aaab0000 349504K rwx-- [ anon ] 00000007c0000000 1048576K rwx-- [ anon ] ... 00007fa1ed00d000 1652K r-xs- /usr/local/java/jdk-1.6-x64/jre/lib/rt.jar ... 00007fa1ed1d3000 1024K rwx-- [ anon ] 00007fa1ed2d3000 4K ----- [ anon ] 00007fa1ed2d4000 1024K rwx-- [ anon ] 00007fa1ed3d4000 4K ----- [ anon ] ... 00007fa1f20d3000 164K r-x-- /usr/local/java/jdk-1.6-x64/jre/lib/amd64/libjava.so 00007fa1f20fc000 1020K ----- /usr/local/java/jdk-1.6-x64/jre/lib/amd64/libjava.so 00007fa1f21fb000 28K rwx-- /usr/local/java/jdk-1.6-x64/jre/lib/amd64/libjava.so ... 00007fa1f34aa000 1576K r-x-- /lib/x86_64-linux-gnu/libc-2.13.so 00007fa1f3634000 2044K ----- /lib/x86_64-linux-gnu/libc-2.13.so 00007fa1f3833000 16K r-x-- /lib/x86_64-linux-gnu/libc-2.13.so 00007fa1f3837000 4K rwx-- /lib/x86_64-linux-gnu/libc-2.13.so ...
A quick explanation of the format: each row starts with the virtual memory address of the segment. This is followed by the segment size, permissions, and the source of the segment. This last item is either a file or "anon", which indicates a block of memory allocated via mmap.
Starting from the top, we have
java
). This is very small; all it does is load in the shared libraries where the real JVM code is stored.-Xmx
value; this allows it to have a contiguous heap. The -Xms
value is used internally to say how much of the heap is "in use" when the program starts, and to trigger garbage collection as that limit is approached.StackOverFlowError
. For a real app, you will see dozens if not hundreds of these entries repeated through the memory map.The shared libraries are particularly interesting: each shared library has at least two segments: a read-only segment containing the library code, and a read-write segment that contains global per-process data for the library (I don't know what the segment with no permissions is; I've only seen it on x64 Linux). The read-only portion of the library can be shared between all processes that use the library; for example, libc
has 1.5M of virtual memory space that can be shared.
The virtual memory map contains a lot of stuff. Some of it is read-only, some of it is shared, and some of it is allocated but never touched (eg, almost all of the 4Gb of heap in this example). But the operating system is smart enough to only load what it needs, so the virtual memory size is largely irrelevant.
Where virtual memory size is important is if you're running on a 32-bit operating system, where you can only allocate 2Gb (or, in some cases, 3Gb) of process address space. In that case you're dealing with a scarce resource, and might have to make tradeoffs, such as reducing your heap size in order to memory-map a large file or create lots of threads.
But, given that 64-bit machines are ubiquitous, I don't think it will be long before Virtual Memory Size is a completely irrelevant statistic.
Resident Set size is that portion of the virtual memory space that is actually in RAM. If your RSS grows to be a significant portion of your total physical memory, it might be time to start worrying. If your RSS grows to take up all your physical memory, and your system starts swapping, it's well past time to start worrying.
But RSS is also misleading, especially on a lightly loaded machine. The operating system doesn't expend a lot of effort to reclaiming the pages used by a process. There's little benefit to be gained by doing so, and the potential for an expensive page fault if the process touches the page in the future. As a result, the RSS statistic may include lots of pages that aren't in active use.
Unless you're swapping, don't get overly concerned about what the various memory statistics are telling you. With the caveat that an ever-growing RSS may indicate some sort of memory leak.
With a Java program, it's far more important to pay attention to what's happening in the heap. The total amount of space consumed is important, and there are some steps that you can take to reduce that. More important is the amount of time that you spend in garbage collection, and which parts of the heap are getting collected.
Accessing the disk (ie, a database) is expensive, and memory is cheap. If you can trade one for the other, do so.
requireActivity().onBackPressedDispatcher.addCallback(viewLifecycleOwner, object : OnBackPressedCallback(true) {
override fun handleOnBackPressed() {
Log.w("a","")
}
})
With bootstrap 4 you can use flex
<div class="d-flex justify-content-center align-items-center">
<button type="submit" class="btn btn-primary">Create</button>
</div>
source: bootstrap 4.1
If you want to only pass certain arguments, you can do so like this:
Foo.bar(TheClass, 'theMethod', 'arg1', 'arg2')
Foo.js
bar (obj, method, ...args) {
obj[method](...args)
}
obj
and method
are used by the bar()
method, while the rest of args are passed to the actual call.
As mentioned, the error message shows you the exact problem: you are passing 25 characters into a field set up to hold 20. You might also want to consider defining the columns a little more precisely. You can define whether the VARCHAR2 column will store a certain number of bytes or characters. You may encounter a problem in the future where you try to insert a multi byte character into the field, for example this is 5 characters in length but it won't fit into 5 bytes: 'ÀÈÌÕÛ'
Here is an example:
CREATE TABLE Customers(CustomerID VARCHAR2(9 BYTE), ...
or
CREATE TABLE Customers(CustomerID VARCHAR2(9 CHAR), ...
In Visual Studio 2013:
CTL + M + A collapses all
CTL + M + L expands all
This error message comes specifically from the XDebug extension. PHP itself does not have a function nesting limit. Change the setting in your php.ini:
xdebug.max_nesting_level = 200
or in your PHP code:
ini_set('xdebug.max_nesting_level', 200);
As for if you really need to change it (i.e.: if there's a alternative solution to a recursive function), I can't tell without the code.
Add the following code in your action bar styles:
<item name="android:displayOptions">showHome|homeAsUp|showTitle</item>
<item name="displayOptions">showHome|homeAsUp|showTitle</item>
<item name="android:icon">@android:color/transparent</item> <!-- This does the magic! -->
PS: I'm using Actionbar Sherlock and this works just fine.
Unfortunately the signature for map that you gave is an incorrect one for map and there is indeed legitimate criticism.
The first criticism is that by subverting the signature for map, we have something that is more general. It is a common error to believe that this is a virtue by default. It isn't. The map function is very well defined as a covariant functor Fx -> (x -> y) -> Fy with adherence to the two laws of composition and identity. Anything else attributed to "map" is a travesty.
The given signature is something else, but it is not map. What I suspect it is trying to be is a specialised and slightly altered version of the "traverse" signature from the paper, The Essence of the Iterator Pattern. Here is its signature:
traverse :: (Traversable t, Applicative f) => (a -> f b) -> t a -> f (t b)
I shall convert it to Scala:
def traverse[A, B](f: A => F[B], a: T[A])(implicit t: Traversable[T], ap: Applicative[F]): F[T[B]
Of course it fails -- it is not general enough! Also, it is slightly different (note that you can get map by running traverse through the Identity functor). However, I suspect that if the library writers were more aware of library generalisations that are well documented (Applicative Programming with Effects precedes the aforementioned), then we wouldn't see this error.
Second, the map function is a special-case in Scala because of its use in for-comprehensions. This unfortunately means that a library designer who is better equipped cannot ignore this error without also sacrificing the syntactic sugar of comprehensions. In other words, if the Scala library designers were to destroy a method, then this is easily ignored, but please not map!
I hope someone speaks up about it, because as it is, it will become harder to workaround the errors that Scala insists on making, apparently for reasons that I have strong objections to. That is, the solution to "the irresponsible objections from the average programmer (i.e. too hard!)" is not "appease them to make it easier for them" but instead, provide pointers and assistance to become better programmers. Myself and Scala's objectives are in contention on this issue, but back to your point.
You were probably making your point, predicting specific responses from "the average programmer." That is, the people who will claim "but it is too complicated!" or some such. These are the Yegges or Blochs that you refer to. My response to these people of the anti-intellectualism/pragmatism movement is quite harsh and I'm already anticipating a barrage of responses, so I will omit it.
I truly hope the Scala libraries improve, or at least, the errors can be safely tucked away in a corner. Java is a language where "trying to do anything useful" is so incredibly costly, that it is often not worth it because the overwhelming amount of errors simply cannot be avoided. I implore Scala to not go down the same path.
I use __get
(and public properties) as much as possible, because they make code much more readable. Compare:
this code unequivocally says what i'm doing:
echo $user->name;
this code makes me feel stupid, which i don't enjoy:
function getName() { return $this->_name; }
....
echo $user->getName();
The difference between the two is particularly obvious when you access multiple properties at once.
echo "
Dear $user->firstName $user->lastName!
Your purchase:
$product->name $product->count x $product->price
"
and
echo "
Dear " . $user->getFirstName() . " " . $user->getLastName() . "
Your purchase:
" . $product->getName() . " " . $product->getCount() . " x " . $product->getPrice() . " ";
Whether $a->b
should really do something or just return a value is the responsibility of the callee. For the caller, $user->name
and $user->accountBalance
should look the same, although the latter may involve complicated calculations. In my data classes i use the following small method:
function __get($p) {
$m = "get_$p";
if(method_exists($this, $m)) return $this->$m();
user_error("undefined property $p");
}
when someone calls $obj->xxx
and the class has get_xxx
defined, this method will be implicitly called. So you can define a getter if you need it, while keeping your interface uniform and transparent. As an additional bonus this provides an elegant way to memorize calculations:
function get_accountBalance() {
$result = <...complex stuff...>
// since we cache the result in a public property, the getter will be called only once
$this->accountBalance = $result;
}
....
echo $user->accountBalance; // calculate the value
....
echo $user->accountBalance; // use the cached value
Bottom line: php is a dynamic scripting language, use it that way, don't pretend you're doing Java or C#.
Finally, it worked. Thank you guys.
I was not getting it to work because i was trying to resize the label in heightForRowAtIndexPath
method:
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
and (yeah silly me), i was resizing the label to default in cellForRowAtIndexPath
method - i was overlooking the code i had written earlier:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
You can use the "Except" extension method (see http://msdn.microsoft.com/en-us/library/bb337804.aspx)
In your code
var difference = people.Except(exclusions);
After yum install python3-pip
, check the name of the installed binary. e.g.
ll /usr/bin/pip*
On my CentOS 7, it is named as pip-3
instead of pip3
.
It is very important that AJAX requests retain session. The easiest example is when you try to do an AJAX request for the admin panel, let's say. Of course that you will protect the page that you make the request to, not to accessible by others who don't have the session you get after administrator login. Makes sense?
use Integer.toString(tmpInt).trim();
You should add the ngDefaultControl attribute to your input like this:
<md-input
[(ngModel)]="recipient"
name="recipient"
placeholder="Name"
class="col-sm-4"
(blur)="addRecipient(recipient)"
ngDefaultControl>
</md-input>
Taken from comments in this post:
angular2 rc.5 custom input, No value accessor for form control with unspecified name
Note: For later versions of @angular/material:
Nowadays you should instead write:
<md-input-container>
<input
mdInput
[(ngModel)]="recipient"
name="recipient"
placeholder="Name"
(blur)="addRecipient(recipient)">
</md-input-container>
A way to use this in react:
class Timeout extends Component {
constructor(props){
super(props)
this.state = {
timeout: null
}
}
userTimeout(){
const { timeout } = this.state;
clearTimeout(timeout);
this.setState({
timeout: setTimeout(() => {this.callAPI()}, 250)
})
}
}
Helpful if you'd like to only call an API after the user has stopped typing for instance. The userTimeout function could be bound via onKeyUp to an input.
this is very old question, but since I came here while searching worth putting my answer.
SELECT DATEPART(ISO_WEEK,'2020-11-13') AS ISO_8601_WeekNr
In the Oracle RDBMS, it is possible to use a multi-row subquery in the select clause as long as the (sub-)output is encapsulated as a collection. In particular, a multi-row select clause subquery can output each of its rows as an xmlelement that is encapsulated in an xmlforest.
To update existing remote to track specific branches only use:
git remote set-branches <remote-name> <branch-name>
From git help remote
:
set-branches
Changes the list of branches tracked by the named remote. This can be used to track a subset of the available remote branches
after the initial setup for a remote.
The named branches will be interpreted as if specified with the -t option on the git remote add command line.
With --add, instead of replacing the list of currently tracked branches, adds to that list.
Microsoft now has this:
https://github.com/Microsoft/VisualStudioUninstaller/releases
I allowed a windows 10 update to go through that completely f****d VS2015 so I am trying this before having to resort to a rebuild. WT*. :-(
This is a small program that will keep asking an input until required input is given.
we should keep the required number as a string, otherwise it may not work. input is taken as string by default
required_number = '18'
while True:
number = input("Enter the number\n")
if number == required_number:
print ("GOT IT")
break
else:
print ("Wrong number try again")
or you can use eval(input()) method
required_number = 18
while True:
number = eval(input("Enter the number\n"))
if number == required_number:
print ("GOT IT")
break
else:
print ("Wrong number try again")
When I paste code into Outlook or have sentences containing code or technical syntax I get annoyed by all of the red squiggles that identify spelling errors. If you want Outlook to clear all of the red spellcheck squiggles you can add a button to the Quick Access Toolbar that calls a VBA macro and removes all squiggles from the current document.
I prefer to run this macro separate from my style choice because I often use it on a selection of text that has mixed content.
For syntax highlighting I use the Notepad++ technique already listed by @srujanreddy, though I discovered that the right-click context menu option a bit handier than navigating the Plugins menu.
If you get annoyed by spell check while you are preparing your email you can add a button to your quick access toolbar that will remove the red squiggles from the message body.
See this article: https://stackoverflow.com/a/49865743/1898524
Assuming you want to add this path for all users on the system, add the following line to your /etc/profile.d/play.sh
(and possibly play.csh
, etc):
PATH=$PATH:/home/me/play
export PATH
Below you can find my implementation of gradient descent for linear regression problem.
At first, you calculate gradient like X.T * (X * w - y) / N
and update your current theta with this gradient simultaneously.
Here is the python code:
import pandas as pd
import numpy as np
from matplotlib import pyplot as plt
import random
def generateSample(N, variance=100):
X = np.matrix(range(N)).T + 1
Y = np.matrix([random.random() * variance + i * 10 + 900 for i in range(len(X))]).T
return X, Y
def fitModel_gradient(x, y):
N = len(x)
w = np.zeros((x.shape[1], 1))
eta = 0.0001
maxIteration = 100000
for i in range(maxIteration):
error = x * w - y
gradient = x.T * error / N
w = w - eta * gradient
return w
def plotModel(x, y, w):
plt.plot(x[:,1], y, "x")
plt.plot(x[:,1], x * w, "r-")
plt.show()
def test(N, variance, modelFunction):
X, Y = generateSample(N, variance)
X = np.hstack([np.matrix(np.ones(len(X))).T, X])
w = modelFunction(X, Y)
plotModel(X, Y, w)
test(50, 600, fitModel_gradient)
test(50, 1000, fitModel_gradient)
test(100, 200, fitModel_gradient)
The solution given by @annoyingmouse works for me.
But to use the checkbox in the header cell, I also had to fix select.dataTables.css.
It seems that they used :
table.dataTable tbody th.select-checkbox
instead of :
table.dataTable thead th.select-checkbox
So I had to add this to my css :
table.dataTable thead th.select-checkbox {
position: relative;
}
table.dataTable thead th.select-checkbox:before,
table.dataTable thead th.select-checkbox:after {
display: block;
position: absolute;
top: 1.2em;
left: 50%;
width: 12px;
height: 12px;
box-sizing: border-box;
}
table.dataTable tbody td.select-checkbox:before,
table.dataTable thead th.select-checkbox:before {
content: ' ';
margin-top: -6px;
margin-left: -6px;
border: 1px solid black;
border-radius: 3px;
}
Some ideas in the following answer:
Steps in creating a web service using Axis2 - The client code
Gives an example of a Groovy client invoking the ADB classes generated from the WSDL.
There are lots of web service frameworks out there...
For Mac, use the following command:
mysql -u app -h hostaddress -P port -D dbname -p
and then enter the password when prompted.
If you need to remove it from all your plots, you can remove spines in style settings (style sheet or rcParams). E.g:
import matplotlib as mpl
mpl.rcParams['axes.spines.right'] = False
mpl.rcParams['axes.spines.top'] = False
If you want to remove all spines:
mpl.rcParams['axes.spines.left'] = False
mpl.rcParams['axes.spines.right'] = False
mpl.rcParams['axes.spines.top'] = False
mpl.rcParams['axes.spines.bottom'] = False
To retrieve data from database:
private SqlConnection Conn;
private void CreateConnection()
{
string ConnStr =
ConfigurationManager.ConnectionStrings["ConnStr"].ConnectionString;
Conn = new SqlConnection(ConnStr);
}
public DataTable getData()
{
CreateConnection();
string SqlString = "SELECT * FROM TableName WHERE SomeID = @SomeID;";
SqlDataAdapter sda = new SqlDataAdapter(SqlString, Conn);
DataTable dt = new DataTable();
try
{
Conn.Open();
sda.Fill(dt);
}
catch (SqlException se)
{
DBErLog.DbServLog(se, se.ToString());
}
finally
{
Conn.Close();
}
return dt;
}
In computing, an idempotent operation is one that has no additional effect if it is called more than once with the same input parameters. For example, removing an item from a set can be considered an idempotent operation on the set.
In mathematics, an idempotent operation is one where f(f(x)) = f(x). For example, the abs()
function is idempotent because abs(abs(x)) = abs(x)
for all x
.
These slightly different definitions can be reconciled by considering that x in the mathematical definition represents the state of an object, and f is an operation that may mutate that object. For example, consider the Python set
and its discard
method. The discard
method removes an element from a set, and does nothing if the element does not exist. So:
my_set.discard(x)
has exactly the same effect as doing the same operation twice:
my_set.discard(x)
my_set.discard(x)
Idempotent operations are often used in the design of network protocols, where a request to perform an operation is guaranteed to happen at least once, but might also happen more than once. If the operation is idempotent, then there is no harm in performing the operation two or more times.
See the Wikipedia article on idempotence for more information.
The above answer previously had some incorrect and misleading examples. Comments below written before April 2014 refer to an older revision.
0755
= User:rwx
Group:r-x
World:r-x
0750
= User:rwx
Group:r-x
World:---
(i.e. World: no access)
r = read
w = write
x = execute (traverse for directories)
That is a Python bug between "*" and special characters.
Instead of
re.compile(r"\w*")
Try:
re.compile(r"[a-zA-Z0-9]*")
It works, however does not make the same regular expression.
This bug seems to have been fixed between 2.7.5 and 2.7.6.
Your MainActivity.java
is like this:
LinearLayout ll = (LinearLayout) findViewById(R.id.ll);
ImageView iv = (ImageView) findViewById(R.id.iv);
You should to first get your image from Resource as Bitmap
or Drawable
.
If get as Bitmap
:
Bitmap bm = BitmapFactory.decodeResource(getResources(), R.drawable.ash_arrow);
bm = new Newreza().setEffect(bm, 0.2f, ((ColorDrawable) ll.getBackground).getColor);
iv.setImageBitmap(bm);
Or if get as Drawable
:
Drawable d = getResources().getDrawable(R.drawable.ash_arrow);
d = new Newreza().setEffect(d, 0.2f, ((ColorDrawable) ll.getBackground).getColor);
iv.setImageDrawable(d);
Then create new file as Newreza.java
near MainActivity.java
, and copy bottom codes in Newreza.java
:
package your.package.name;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
//Telegram:@newreza
//mail:[email protected]
public class Newreza{
int a,x,y;
float bmr;
public Bitmap setEffect(Bitmap bm,float radius,int color){
bm=bm.copy(Bitmap.Config.ARGB_8888,true);
bmr=radius*bm.getWidth();
for(y=0;y<bmr;y++){
a=(int)(bmr-Math.sqrt(y*(2*bmr-y)));
for(x=0;x<a;x++){
bm.setPixel(x,y,color);
}
}
for(y=0;y<bmr;y++){
a=(int)(bm.getWidth()-bmr+Math.sqrt(y*(2*bmr-y)));
for(x=a;x<bm.getWidth();x++){
bm.setPixel(x,y,color);
}
}
for(y=(int)(bm.getHeight()-bmr);y<bm.getHeight();y++){
a=(int)(bm.getWidth()-bmr+Math.sqrt(Math.pow(bmr,2)-Math.pow(bmr+y-bm.getHeight(),2)));
for(x=a;x<bm.getWidth();x++){
bm.setPixel(x,y,color);
}
}
for(y=(int)(bm.getHeight()-bmr);y<bm.getHeight();y++){
a=(int)(bmr-Math.sqrt(Math.pow(bmr,2)-Math.pow(bmr+y-bm.getHeight(),2)));
for(x=0;x<a;x++){
bm.setPixel(x,y,color);
}
}
return bm;
}
public Drawable setEffect(Drawable d,float radius,int color){
return new BitmapDrawable(Resources.getSystem(),setEffect(((BitmapDrawable)d).getBitmap(),radius,color));
}
}
Just notice that replace your package name with first line in the code.
It %100 works, because is written in details :)
In view file (HTML or EJS)
<div ng-repeat="item in vm.itemList | filter: myFilter > </div>
and In Controller
$scope.myFilter = function(item) {
return (item.propertyA === 'value' || item.propertyA === 'value');
}
Due to PermGen removal some options were removed (like -XX:MaxPermSize
), but options -Xms
and -Xmx
work in Java 8. It's possible that under Java 8 your application simply needs somewhat more memory. Try to increase -Xmx
value. Alternatively you can try to switch to G1 garbage collector using -XX:+UseG1GC
.
Note that if you use any option which was removed in Java 8, you will see a warning upon application start:
$ java -XX:MaxPermSize=128M -version
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=128M; support was removed in 8.0
java version "1.8.0_25"
Java(TM) SE Runtime Environment (build 1.8.0_25-b18)
Java HotSpot(TM) 64-Bit Server VM (build 25.25-b02, mixed mode)
My solution goes into a similar direction as Gareth, though I do some things differently.
Here goes:
1. Hide the cells
There is no way to directly hide the cells. UITableViewController
is the data source which provides the static cells, and currently there is no way to tell it "don't provide cell x".
So we have to provide our own data source, which delegates to the UITableViewController
in order to get the static cells.
Easiest is to subclass UITableViewController
, and override all methods which need to behave differently when hiding cells.
In the simplest case (single section table, all cells have the same height), this would go like this:
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [super tableView:tableView numberOfRowsInSection:section] - numberOfCellsHidden;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
// Recalculate indexPath based on hidden cells
indexPath = [self offsetIndexPath:indexPath];
return [super tableView:tableView cellForRowAtIndexPath:indexPath];
}
- (NSIndexPath*)offsetIndexPath:(NSIndexPath*)indexPath
{
int offsetSection = indexPath.section; // Also offset section if you intend to hide whole sections
int numberOfCellsHiddenAbove = ... // Calculate how many cells are hidden above the given indexPath.row
int offsetRow = indexPath.row + numberOfCellsHiddenAbove;
return [NSIndexPath indexPathForRow:offsetRow inSection:offsetSection];
}
If your table has multiple sections, or the cells have differing heights, you need to override more methods. The same principle applies here: You need to offset indexPath, section and row before delegating to super.
Also keep in mind that the indexPath parameter for methods like didSelectRowAtIndexPath:
will be different for the same cell, depending on state (i.e. the number of cells hidden). So it is probably a good idea to always offset any indexPath parameter and work with these values.
2. Animate the change
As Gareth already stated, you get major glitches if you animate changes using reloadSections:withRowAnimation:
method.
I found out that if you call reloadData:
immediately afterwards, the animation is much improved (only minor glitches left). The table is displayed correctly after the animation.
So what I am doing is:
- (void)changeState
{
// Change state so cells are hidden/unhidden
...
// Reload all sections
NSIndexSet* reloadSet = [NSIndexSet indexSetWithIndexesInRange:NSMakeRange(0, [self numberOfSectionsInTableView:tableView])];
[tableView reloadSections:reloadSet withRowAnimation:UITableViewRowAnimationAutomatic];
[tableView reloadData];
}
I only have a workaround here.
In this special case, I would use the FILTER
function instead of QUERY
:
=FILTER(Responses!B:B,Responses!G:G=B1)
Assuming that your data is on the "Responses" sheet, but your condition (cell reference) is in the actual sheet's B1 cell.
Hope it helps.
UPDATE:
After some search for the original question: The problem with your formula is definitely the second &
sign which assumes that you would like to concatenate something more to your WHERE
statement. Try to remove it. If it still doesn't work, then try this:
=QUERY(Responses!B1:I, "Select B where G matches '^.\*($" & B1 & ").\*$'")
- I have not tried it, but it helped in another post: Query with range of values for WHERE clause?
I find that no one mentions this difference:
__getattribute__
has a default implementation, but __getattr__
does not.
class A:
pass
a = A()
a.__getattr__ # error
a.__getattribute__ # return a method-wrapper
This has a clear meaning: since __getattribute__
has a default implementation, while __getattr__
not, clearly python encourages users to implement __getattr__
.
CREATE FUNCTION ActionState_Preassigned()
RETURNS tinyint
AS
BEGIN
RETURN 0
END
GO
CREATE FUNCTION ActionState_Unassigned()
RETURNS tinyint
AS
BEGIN
RETURN 1
END
-- etc...
Where performance matters, still use the hard values.
git config --local receive.denyCurrentBranch updateInstead
Added in Git 2.3, this could be a good possibility: https://github.com/git/git/blob/v2.3.0/Documentation/config.txt#L2155
You set it on the server repository, and it also updates the working tree if it is clean.
There have been further improvements in 2.4 with the push-to-checkout
hook and handling of unborn branches.
Sample usage:
git init server
cd server
touch a
git add .
git commit -m 0
git config --local receive.denyCurrentBranch updateInstead
cd ..
git clone server local
cd local
touch b
git add .
git commit -m 1
git push origin master:master
cd ../server
ls
Output:
a
b
This does have the following shortcomings mentioned on the GitHub announcement:
But all of those points are out of the scope of Git and must be taken care of by external code. So in that sense, this, together with Git hooks, are the ultimate solution.
The use of http.createClient
is now deprecated. You can pass Headers in options collection as below.
var options = {
hostname: 'example.com',
path: '/somePath.php',
method: 'GET',
headers: {'Cookie': 'myCookie=myvalue'}
};
var results = '';
var req = http.request(options, function(res) {
res.on('data', function (chunk) {
results = results + chunk;
//TODO
});
res.on('end', function () {
//TODO
});
});
req.on('error', function(e) {
//TODO
});
req.end();
mwebView.setDownloadListener(new DownloadListener()
{
@Override
public void onDownloadStart(String url, String userAgent,
String contentDisposition, String mimeType,
long contentLength) {
DownloadManager.Request request = new DownloadManager.Request(
Uri.parse(url));
request.setMimeType(mimeType);
String cookies = CookieManager.getInstance().getCookie(url);
request.addRequestHeader("cookie", cookies);
request.addRequestHeader("User-Agent", userAgent);
request.setDescription("Downloading file...");
request.setTitle(URLUtil.guessFileName(url, contentDisposition,
mimeType));
request.allowScanningByMediaScanner();
request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
request.setDestinationInExternalPublicDir(
Environment.DIRECTORY_DOWNLOADS, URLUtil.guessFileName(
url, contentDisposition, mimeType));
DownloadManager dm = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
dm.enqueue(request);
Toast.makeText(getApplicationContext(), "Downloading File",
Toast.LENGTH_LONG).show();
}});
You can either make your variable non static
public final String TTT = (String) getText(R.string.TTT);
or make the "getText" method static (if at all possible)
C99 does, if you have
#include <stdbool.h>
If the compiler does not support C99, you can define it yourself:
// file : myboolean.h
#ifndef MYBOOLEAN_H
#define MYBOOLEAN_H
#define false 0
#define true 1
typedef int bool; // or #define bool int
#endif
(but note that this definition changes ABI for bool
type so linking against external libraries which were compiled with properly defined bool
may cause hard-to-diagnose runtime errors).
dict((el,0) for el in a)
will work well.
Python 2.7 and above also support dict comprehensions. That syntax is {el:0 for el in a}
.
If you are forced to use that List, or if your program has a structure like
then Thilos answer will be the best way to do it. If you combine it with the advice from Tom Hawtin - tackline, you get:
java.util.Collections.sort(listOfCountryNames, Collator.getInstance());
If you are free to decide, and if your application might get more complex, then you might change your code to use a TreeSet instead. This kind of collection sorts your entries just when they are inserted. No need to call sort().
Collection<String> countryNames =
new TreeSet<String>(Collator.getInstance());
countryNames.add("UK");
countryNames.add("Germany");
countryNames.add("Australia");
// Tada... sorted.
This has some subtle, but important advantages:
TreeSet<String> countyNames
and instantly knows: this is a sorted collection of Strings without duplicates, and I can be sure that this is true at every moment. So much information in a short declaration.Using the right collection for the right task is a key to write short and bug free code. It's not as demonstrative in this case, because you just save one line. But I've stopped counting how often I see someone using a List when they want to ensure there are no duplictes, and then build that functionality themselves. Or even worse, using two Lists when you really need a Map.
Don't get me wrong: Using Collections.sort is not an error or a flaw. But there are many cases when the TreeSet is much cleaner.
Instead of dtAll = dtOne.Copy();
in Jeromy Irvine's answer you can start with an empty DataTable
and merge one-by-one iteratively:
dtAll = new DataTable();
...
dtAll.Merge(dtOne);
dtAll.Merge(dtTwo);
dtAll.Merge(dtThree);
...
and so on.
This technique is useful in a loop where you want to iteratively merge data tables:
DataTable dtAllCountries = new DataTable();
foreach(String strCountry in listCountries)
{
DataTable dtCountry = getData(strCountry); //Some function that returns a data table
dtAllCountries.Merge(dtCountry);
}
Here is an example of a drawable that will be white by default, black when pressed:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true">
<shape>
<solid
android:color="#1E669B"/>
<stroke
android:width="2dp"
android:color="#1B5E91"/>
<corners
android:radius="6dp"/>
<padding
android:bottom="10dp"
android:left="10dp"
android:right="10dp"
android:top="10dp"/>
</shape>
</item>
<item>
<shape>
<gradient
android:angle="270"
android:endColor="#1E669B"
android:startColor="#1E669B"/>
<stroke
android:width="4dp"
android:color="#1B5E91"/>
<corners
android:radius="7dp"/>
<padding
android:bottom="10dp"
android:left="10dp"
android:right="10dp"
android:top="10dp"/>
</shape>
</item>
</selector>
You do not have permissions to access the file. Please be sure whether you can access the file in that drive.
string route= @"E:\Sample.text";
FileStream fs = new FileStream(route, FileMode.Create);
You have to provide the file name to create. Please try this, now you can create.
If you have a content Uri with content://com.externalstorage...
you can use this method to get absolute path of a folder or file on Android 19 or above.
public static String getPath(final Context context, final Uri uri) {
final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
// DocumentProvider
if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {
System.out.println("getPath() uri: " + uri.toString());
System.out.println("getPath() uri authority: " + uri.getAuthority());
System.out.println("getPath() uri path: " + uri.getPath());
// ExternalStorageProvider
if ("com.android.externalstorage.documents".equals(uri.getAuthority())) {
final String docId = DocumentsContract.getDocumentId(uri);
final String[] split = docId.split(":");
final String type = split[0];
System.out.println("getPath() docId: " + docId + ", split: " + split.length + ", type: " + type);
// This is for checking Main Memory
if ("primary".equalsIgnoreCase(type)) {
if (split.length > 1) {
return Environment.getExternalStorageDirectory() + "/" + split[1] + "/";
} else {
return Environment.getExternalStorageDirectory() + "/";
}
// This is for checking SD Card
} else {
return "storage" + "/" + docId.replace(":", "/");
}
}
}
return null;
}
You can check each part of Uri using println
. Returned values for my SD card and device main memory are listed below. You can access and delete if file is on memory, but I wasn't able to delete file from SD card using this method, only read or opened image using this absolute path. If you find a solution to delete using this method, please share.
SD CARD
getPath() uri: content://com.android.externalstorage.documents/tree/612E-B7BF%3A/document/612E-B7BF%3A
getPath() uri authority: com.android.externalstorage.documents
getPath() uri path: /tree/612E-B7BF:/document/612E-B7BF:
getPath() docId: 612E-B7BF:, split: 1, type: 612E-B7BF
MAIN MEMORY
getPath() uri: content://com.android.externalstorage.documents/tree/primary%3A/document/primary%3A
getPath() uri authority: com.android.externalstorage.documents
getPath() uri path: /tree/primary:/document/primary:
getPath() docId: primary:, split: 1, type: primary
If you wish to get Uri with file:///
after getting path use
DocumentFile documentFile = DocumentFile.fromFile(new File(path));
documentFile.getUri() // will return a Uri with file Uri
I know this is a two year old question, but this is a quick answer for those searching for a 'how to'.
If you don't want to have to put quotes around anything you can simply write a block of text to a file, and escape variables you want to export as text (for instance for use in a script) and not escape one's you want to export as the value of the variable.
#!/bin/bash
FILE_NAME="test.txt"
VAR_EXAMPLE="\"string\""
cat > ${FILE_NAME} << EOF
\${VAR_EXAMPLE}=${VAR_EXAMPLE} in ${FILE_NAME}
EOF
Will write "${VAR_EXAMPLE}="string" in test.txt" into test.txt
This can also be used to output blocks of text to the console with the same rules by omitting the file name
#!/bin/bash
VAR_EXAMPLE="\"string\""
cat << EOF
\${VAR_EXAMPLE}=${VAR_EXAMPLE} to console
EOF
Will output "${VAR_EXAMPLE}="string" to console" to the console
Actually it is much more useful use the method that came with the library like this $(".datepicker").datepicker("clearDates");
I recommend you to always take a look at the documentation of the library, here is the one I used for this.
This is what I use:
EXEC sp_rename 'MyTable', 'MyTableNewName';
Do NOT do that! setNum(num);//fix- until someone fixes your setter. Your getter should not call your setter with the uninitialized value of
num(e.g.
0`).
I suggest making a few small changes -
public static class Vars { private int num = 5; // Default to 5. public void setNum(int x) { this.num = x; // actually "set" the value. } public int getNum() { return num; } }
this works for me.
<VirtualHost *:443>
ServerName www.example.com
# ... SSL configuration goes here
Redirect "https://www.example.com/" "http://www.example.com/"
</VirtualHost>
<VirtualHost *:80>
ServerName www.example.com
# ...
</VirtualHost>
be sure to listen to both ports 80 and 443.
I did it this way:
var xlApp = new Excel.Application();
var xlWorkBook = xlApp.Workbooks.Add(System.Reflection.Missing.Value);
var xlWorkSheet = (Excel.Worksheet)xlWorkBook.Worksheets.Item[1];
xlWorkSheet.Columns.AutoFit();
With this way, columns always fit to text width inside cells.
Hope it helps to someone!
Here is an alternative solution to @Terrance's answer. You can easly outsource the conversion. The Gson library does wonderful work converting various data structures into JSON and the other way around.
public static void execute() {
Map<String, String> comment = new HashMap<String, String>();
comment.put("subject", "Using the GSON library");
comment.put("message", "Using libraries is convenient.");
String json = new GsonBuilder().create().toJson(comment, Map.class);
makeRequest("http://192.168.0.1:3000/post/77/comments", json);
}
public static HttpResponse makeRequest(String uri, String json) {
try {
HttpPost httpPost = new HttpPost(uri);
httpPost.setEntity(new StringEntity(json));
httpPost.setHeader("Accept", "application/json");
httpPost.setHeader("Content-type", "application/json");
return new DefaultHttpClient().execute(httpPost);
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
Similar can be done by using Jackson instead of Gson. I also recommend taking a look at Retrofit which hides a lot of this boilerplate code for you. For more experienced developers I recommend trying out RxAndroid.
I've experimented with typing "exit for" a few times and noticed it worked and VB didn't yell at me. It's an option I guess but it just looked bad.
I think the best option is similar to that shared by Tobias. Just put your code in a function and have it return when you want to break out of your loops. Looks cleaner too.
For Each item In itemlist
For Each item1 In itemlist1
If item1 = item Then
Return item1
End If
Next
Next
If it's errors you want to hide you can do it like this
$ErrorActionPreference = "SilentlyContinue"; #This will hide errors
$someObject.SomeFunction();
$ErrorActionPreference = "Continue"; #Turning errors back on
To setup GruntJS build here is the steps:
Make sure you have setup your package.json
or setup new one:
npm init
Install Grunt CLI as global:
npm install -g grunt-cli
Install Grunt in your local project:
npm install grunt --save-dev
Install any Grunt Module you may need in your build process. Just for sake of this sample I will add Concat module for combining files together:
npm install grunt-contrib-concat --save-dev
Now you need to setup your Gruntfile.js
which will describe your build process. For this sample I just combine two JS files file1.js
and file2.js
in the js
folder and generate app.js
:
module.exports = function(grunt) {
// Project configuration.
grunt.initConfig({
concat: {
"options": { "separator": ";" },
"build": {
"src": ["js/file1.js", "js/file2.js"],
"dest": "js/app.js"
}
}
});
// Load required modules
grunt.loadNpmTasks('grunt-contrib-concat');
// Task definitions
grunt.registerTask('default', ['concat']);
};
Now you'll be ready to run your build process by following command:
grunt
I hope this give you an idea how to work with GruntJS build.
NOTE:
You can use grunt-init
for creating Gruntfile.js
if you want wizard-based creation instead of raw coding for step 5.
To do so, please follow these steps:
npm install -g grunt-init
git clone https://github.com/gruntjs/grunt-init-gruntfile.git ~/.grunt-init/gruntfile
grunt-init gruntfile
For Windows users: If you are using cmd.exe you need to change ~/.grunt-init/gruntfile
to %USERPROFILE%\.grunt-init\
. PowerShell will recognize the ~
correctly.
If you are using jaxrs or any other, then there will be a class called mediatype.User interceptor before sending the request and compare it against this.
If you use a static key, encrypt and decrypt always give the same result;
public static final String CRYPTOR_KEY = "your static key here";
byte[] keyByte = Base64.getDecoder().decode(CRYPTOR_KEY);
key = new SecretKeySpec(keyByte, "AES");
.dmp files are dumps of oracle databases created with the "exp" command. You can import them using the "imp" command.
If you have an oracle client intalled on your machine, you can executed the command
imp help=y
to find out how it works. What will definitely help is knowing from wich schema the data was exported and what the oracle version was.
I ran into the need to allow decimal values, so I used not Value like '%[^0-9.]%'
Swift users can check out My Swift Answer for this question.
Or, check out Yedidya Reiss's Answer, which translates this Objective-C code to Swift.
The rest of this answer is written in Objective-C
My Apps
then click the app you want do add the purchase toFeatures
header, and then select In-App Purchases
on the left+
icon in the middlenon-consumable
. If you were going to send a physical item to the user, or give them something that they can buy more than once, you would choose consumable
.tld.websitename.appname.referencename
this will work the best, so for example, you could use com.jojodmo.blix.removeads
cleared for sale
and then choose price tier as 1 (99¢). Tier 2 would be $1.99, and tier 3 would be $2.99. The full list is available if you click view pricing matrix
I recommend you use tier 1, because that's usually the most anyone will ever pay to remove ads.add language
button, and input the information. This will ALL be shown to the customer, so don't put anything you don't want them seeinghosting content with Apple
choose noscreenshot for review
FOR NOW, everything we skip we will come back to.It could take a few hours for your product ID to register in App Store Connect
, so be patient.
Now that you've set up your in-app purchase information on App Store Connect, go into your Xcode project, and go to the application manager (blue page-like icon at the top of where your methods and header files are) click on your app under targets (should be the first one) then go to general. At the bottom, you should see linked frameworks and libraries
click the little plus symbol and add the framework StoreKit.framework
If you don't do this, the in-app purchase will NOT work!
If you are using Objective-C as the language for your app, you should skip these five steps. Otherwise, if you are using Swift, you can follow My Swift Answer for this question, here, or, if you prefer to use Objective-C for the In-App Purchase code but are using Swift in your app, you can do the following:
Create a new .h
(header) file by going to File
> New
> File...
(Command ? + N). This file will be referred to as "Your .h
file" in the rest of the tutorial
When prompted, click Create Bridging Header. This will be our bridging header file. If you are not prompted, go to step 3. If you are prompted, skip step 3 and go directly to step 4.
Create another .h
file named Bridge.h
in the main project folder, Then go to the Application Manager (the blue page-like icon), then select your app in the Targets
section, and click Build Settings
. Find the option that says Swift Compiler - Code Generation, and then set the Objective-C Bridging Header option to Bridge.h
In your bridging header file, add the line #import "MyObjectiveCHeaderFile.h"
, where MyObjectiveCHeaderFile
is the name of the header file that you created in step one. So, for example, if you named your header file InAppPurchase.h, you would add the line #import "InAppPurchase.h"
to your bridge header file.
Create a new Objective-C Methods (.m
) file by going to File
> New
> File...
(Command ? + N). Name it the same as the header file you created in step 1. For example, if you called the file in step 1 InAppPurchase.h, you would call this new file InAppPurchase.m. This file will be referred to as "Your .m
file" in the rest of the tutorial.
Now we're going to get into the actual coding. Add the following code into your .h
file:
BOOL areAdsRemoved;
- (IBAction)restore;
- (IBAction)tapsRemoveAds;
Next, you need to import the StoreKit
framework into your .m
file, as well as add SKProductsRequestDelegate
and SKPaymentTransactionObserver
after your @interface
declaration:
#import <StoreKit/StoreKit.h>
//put the name of your view controller in place of MyViewController
@interface MyViewController() <SKProductsRequestDelegate, SKPaymentTransactionObserver>
@end
@implementation MyViewController //the name of your view controller (same as above)
//the code below will be added here
@end
and now add the following into your .m
file, this part gets complicated, so I suggest that you read the comments in the code:
//If you have more than one in-app purchase, you can define both of
//of them here. So, for example, you could define both kRemoveAdsProductIdentifier
//and kBuyCurrencyProductIdentifier with their respective product ids
//
//for this example, we will only use one product
#define kRemoveAdsProductIdentifier @"put your product id (the one that we just made in App Store Connect) in here"
- (IBAction)tapsRemoveAds{
NSLog(@"User requests to remove ads");
if([SKPaymentQueue canMakePayments]){
NSLog(@"User can make payments");
//If you have more than one in-app purchase, and would like
//to have the user purchase a different product, simply define
//another function and replace kRemoveAdsProductIdentifier with
//the identifier for the other product
SKProductsRequest *productsRequest = [[SKProductsRequest alloc] initWithProductIdentifiers:[NSSet setWithObject:kRemoveAdsProductIdentifier]];
productsRequest.delegate = self;
[productsRequest start];
}
else{
NSLog(@"User cannot make payments due to parental controls");
//this is called the user cannot make payments, most likely due to parental controls
}
}
- (void)productsRequest:(SKProductsRequest *)request didReceiveResponse:(SKProductsResponse *)response{
SKProduct *validProduct = nil;
int count = [response.products count];
if(count > 0){
validProduct = [response.products objectAtIndex:0];
NSLog(@"Products Available!");
[self purchase:validProduct];
}
else if(!validProduct){
NSLog(@"No products available");
//this is called if your product id is not valid, this shouldn't be called unless that happens.
}
}
- (void)purchase:(SKProduct *)product{
SKPayment *payment = [SKPayment paymentWithProduct:product];
[[SKPaymentQueue defaultQueue] addTransactionObserver:self];
[[SKPaymentQueue defaultQueue] addPayment:payment];
}
- (IBAction) restore{
//this is called when the user restores purchases, you should hook this up to a button
[[SKPaymentQueue defaultQueue] addTransactionObserver:self];
[[SKPaymentQueue defaultQueue] restoreCompletedTransactions];
}
- (void) paymentQueueRestoreCompletedTransactionsFinished:(SKPaymentQueue *)queue
{
NSLog(@"received restored transactions: %i", queue.transactions.count);
for(SKPaymentTransaction *transaction in queue.transactions){
if(transaction.transactionState == SKPaymentTransactionStateRestored){
//called when the user successfully restores a purchase
NSLog(@"Transaction state -> Restored");
//if you have more than one in-app purchase product,
//you restore the correct product for the identifier.
//For example, you could use
//if(productID == kRemoveAdsProductIdentifier)
//to get the product identifier for the
//restored purchases, you can use
//
//NSString *productID = transaction.payment.productIdentifier;
[self doRemoveAds];
[[SKPaymentQueue defaultQueue] finishTransaction:transaction];
break;
}
}
}
- (void)paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray *)transactions{
for(SKPaymentTransaction *transaction in transactions){
//if you have multiple in app purchases in your app,
//you can get the product identifier of this transaction
//by using transaction.payment.productIdentifier
//
//then, check the identifier against the product IDs
//that you have defined to check which product the user
//just purchased
switch(transaction.transactionState){
case SKPaymentTransactionStatePurchasing: NSLog(@"Transaction state -> Purchasing");
//called when the user is in the process of purchasing, do not add any of your own code here.
break;
case SKPaymentTransactionStatePurchased:
//this is called when the user has successfully purchased the package (Cha-Ching!)
[self doRemoveAds]; //you can add your code for what you want to happen when the user buys the purchase here, for this tutorial we use removing ads
[[SKPaymentQueue defaultQueue] finishTransaction:transaction];
NSLog(@"Transaction state -> Purchased");
break;
case SKPaymentTransactionStateRestored:
NSLog(@"Transaction state -> Restored");
//add the same code as you did from SKPaymentTransactionStatePurchased here
[[SKPaymentQueue defaultQueue] finishTransaction:transaction];
break;
case SKPaymentTransactionStateFailed:
//called when the transaction does not finish
if(transaction.error.code == SKErrorPaymentCancelled){
NSLog(@"Transaction state -> Cancelled");
//the user cancelled the payment ;(
}
[[SKPaymentQueue defaultQueue] finishTransaction:transaction];
break;
}
}
}
Now you want to add your code for what will happen when the user finishes the transaction, for this tutorial, we use removing adds, you will have to add your own code for what happens when the banner view loads.
- (void)doRemoveAds{
ADBannerView *banner;
[banner setAlpha:0];
areAdsRemoved = YES;
removeAdsButton.hidden = YES;
removeAdsButton.enabled = NO;
[[NSUserDefaults standardUserDefaults] setBool:areAdsRemoved forKey:@"areAdsRemoved"];
//use NSUserDefaults so that you can load whether or not they bought it
//it would be better to use KeyChain access, or something more secure
//to store the user data, because NSUserDefaults can be changed.
//You're average downloader won't be able to change it very easily, but
//it's still best to use something more secure than NSUserDefaults.
//For the purpose of this tutorial, though, we're going to use NSUserDefaults
[[NSUserDefaults standardUserDefaults] synchronize];
}
If you don't have ads in your application, you can use any other thing that you want. For example, we could make the color of the background blue. To do this we would want to use:
- (void)doRemoveAds{
[self.view setBackgroundColor:[UIColor blueColor]];
areAdsRemoved = YES
//set the bool for whether or not they purchased it to YES, you could use your own boolean here, but you would have to declare it in your .h file
[[NSUserDefaults standardUserDefaults] setBool:areAdsRemoved forKey:@"areAdsRemoved"];
//use NSUserDefaults so that you can load wether or not they bought it
[[NSUserDefaults standardUserDefaults] synchronize];
}
Now, somewhere in your viewDidLoad
method, you're going to want to add the following code:
areAdsRemoved = [[NSUserDefaults standardUserDefaults] boolForKey:@"areAdsRemoved"];
[[NSUserDefaults standardUserDefaults] synchronize];
//this will load wether or not they bought the in-app purchase
if(areAdsRemoved){
[self.view setBackgroundColor:[UIColor blueColor]];
//if they did buy it, set the background to blue, if your using the code above to set the background to blue, if your removing ads, your going to have to make your own code here
}
Now that you have added all the code, go into your .xib
or storyboard
file, and add two buttons, one saying purchase, and the other saying restore. Hook up the tapsRemoveAds
IBAction
to the purchase button that you just made, and the restore
IBAction
to the restore button. The restore
action will check if the user has previously purchased the in-app purchase, and give them the in-app purchase for free if they do not already have it.
Next, go into App Store Connect, and click Users and Access
then click the Sandbox Testers
header, and then click the +
symbol on the left where it says Testers
. You can just put in random things for the first and last name, and the e-mail does not have to be real - you just have to be able to remember it. Put in a password (which you will have to remember) and fill in the rest of the info. I would recommend that you make the Date of Birth
a date that would make the user 18 or older. App Store Territory
HAS to be in the correct country. Next, log out of your existing iTunes account (you can log back in after this tutorial).
Now, run your application on your iOS device, if you try running it on the simulator, the purchase will always error, you HAVE TO run it on your iOS device. Once the app is running, tap the purchase button. When you are prompted to log into your iTunes account, log in as the test user that we just created. Next,when it asks you to confirm the purchase of 99¢ or whatever you set the price tier too, TAKE A SCREEN SNAPSHOT OF IT this is what your going to use for your screenshot for review
on App Store Connect. Now cancel the payment.
Now, go to App Store Connect, then go to My Apps
> the app you have the In-app purchase on
> In-App Purchases
. Then click your in-app purchase and click edit under the in-app purchase details. Once you've done that, import the photo that you just took on your iPhone into your computer, and upload that as the screenshot for review, then, in review notes, put your TEST USER e-mail and password. This will help apple in the review process.
After you have done this, go back onto the application on your iOS device, still logged in as the test user account, and click the purchase button. This time, confirm the payment Don't worry, this will NOT charge your account ANY money, test user accounts get all in-app purchases for free After you have confirmed the payment, make sure that what happens when the user buys your product actually happens. If it doesn't, then thats going to be an error with your doRemoveAds
method. Again, I recommend using changing the background to blue for testing the in-app purchase, this should not be your actual in-app purchase though. If everything works and you're good to go! Just make sure to include the in-app purchase in your new binary when you upload it to App Store Connect!
Logged: No Products Available
This could mean four things:
kRemoveAdsProductIdentifier
in the above codeIf it doesn't work the first time, don't get frustrated! Don't give up! It took me about 5 hours straight before I could get this working, and about 10 hours searching for the right code! If you use the code above exactly, it should work fine. Feel free to comment if you have any questions at all.
I hope this helps to all of those hoping to add an in-app purchase to their iOS application. Cheers!
This works for me:
yes | ./sdkmanager "platforms;android-28"
yes | ./sdkmanager "build-tools;28.0.3"
yes | ./sdkmanager --licenses
There are many ways of doing it, I'm listing a few here:
Use SizedBox
if you want to set some specific space
Row(
children: <Widget>[
Text("1"),
SizedBox(width: 50), // give it width
Text("2"),
],
)
Use Spacer
if you want both to be as far apart as possible.
Row(
children: <Widget>[
Text("1"),
Spacer(), // use Spacer
Text("2"),
],
)
Use mainAxisAlignment
according to your needs:
Row(
mainAxisAlignment: MainAxisAlignment.spaceEvenly, // use whichever suits your need
children: <Widget>[
Text("1"),
Text("2"),
],
)
Use Wrap
instead of Row
and give some spacing
Wrap(
spacing: 100, // set spacing here
children: <Widget>[
Text("1"),
Text("2"),
],
)
Usually, we want to divide our vector into a number of intervals. In this case, you can use a function where (a) is a vector and (b) is the number of intervals. (Let's suppose you want 4 intervals)
a <- 1:10
b <- 4
FunctionIntervalM <- function(a,b) {
seq(from=min(a), to = max(a), by = (max(a)-min(a))/b)
}
FunctionIntervalM(a,b)
# 1.00 3.25 5.50 7.75 10.00
Therefore you have 4 intervals:
1.00 - 3.25
3.25 - 5.50
5.50 - 7.75
7.75 - 10.00
You can also use a cut function
cut(a, 4)
# (0.991,3.25] (0.991,3.25] (0.991,3.25] (3.25,5.5] (3.25,5.5] (5.5,7.75]
# (5.5,7.75] (7.75,10] (7.75,10] (7.75,10]
#Levels: (0.991,3.25] (3.25,5.5] (5.5,7.75] (7.75,10]
I got the same error when linking separate storyboards. The error, "Command CompileSwiftSources failed with a nonzero exit code." is shown because I simply forgot to set the view controller inside the second storyboard that I am linking as 'an initial view controller'.
For free private SVN hosting try the following:
Or use BitBucket for free private git/mercurial repositories
You could write a little, very simple routine that does it, without using a regular expression:
pos
so that is points to just before the opening bracket after your for
or while
. openBr
to 0
.pos
, reading the characters at the respective positions, and increment openBr
when you see an opening bracket, and decrement it when you see a closing bracket. That will increment it once at the beginning, for the first opening bracket in "for (
", increment and decrement some more for some brackets in between, and set it back to 0
when your for
bracket closes. openBr
is 0
again.The stopping positon is your closing bracket of for(...)
. Now you can check if there is a semicolon following or not.
Use the FileSystemObject
object, namely, its CreateFolder
and CopyFile
methods. Basically, this is what your script will look like:
Dim oFSO
Set oFSO = CreateObject("Scripting.FileSystemObject")
' Create a new folder
oFSO.CreateFolder "C:\MyFolder"
' Copy a file into the new folder
' Note that the destination folder path must end with a path separator (\)
oFSO.CopyFile "\\server\folder\file.ext", "C:\MyFolder\"
You may also want to add additional logic, like checking whether the folder you want to create already exists (because CreateFolder
raises an error in this case) or specifying whether or not to overwrite the file being copied. So, you can end up with this:
Const strFolder = "C:\MyFolder\", strFile = "\\server\folder\file.ext"
Const Overwrite = True
Dim oFSO
Set oFSO = CreateObject("Scripting.FileSystemObject")
If Not oFSO.FolderExists(strFolder) Then
oFSO.CreateFolder strFolder
End If
oFSO.CopyFile strFile, strFolder, Overwrite
If you need formatting the xml string to xml, try this:
String xmlStr = "your-xml-string";
Source xmlInput = new StreamSource(new StringReader(xmlStr));
Transformer transformer = TransformerFactory.newInstance().newTransformer();
transformer.setOutputProperty(OutputKeys.INDENT, "yes");
transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "2");
transformer.transform(xmlInput,
new StreamResult(new FileOutputStream("response.xml")));
SELECT field1
, field2
, 'Test' AS field3
FROM Test
; // replace with simple quote '
@Test
public void regexSplit() {
String source = "Thequickbrownfoxjumps";
// define matcher, any char, min length 1, max length 4
Matcher matcher = Pattern.compile(".{1,4}").matcher(source);
List<String> result = new ArrayList<>();
while (matcher.find()) {
result.add(source.substring(matcher.start(), matcher.end()));
}
String[] expected = {"Theq", "uick", "brow", "nfox", "jump", "s"};
assertArrayEquals(result.toArray(), expected);
}
I'd the same problem while I was developing a simple Java application that listens on a specific TCP. Usually, I had no problem, but when I run some stress test I noticed that some connection broke with error socket write exception
.
After Investigation I found a solution that solves my problem. I know this question is quite old, but I prefer to share my solution, someone can find it useful.
The problem was on ServerSocket creation. I read from Javadoc there is a default limit of 50 pending sockets. If you try opening another connection, these will be refused. The solution consist simply in change this default configuration at server side. In the following case, I create a Socket server that listen at TCP port 10_000
and accept max 200
pending sockets.
new Thread(() -> {
try (ServerSocket serverSocket = new ServerSocket(10_000, 200)) {
logger.info("Server starts listening on TCP port {}", port);
while (true) {
try {
ClientHandler clientHandler = clientHandlerProvider.getObject(serverSocket.accept(), this);
executor.execute(clientHandler::start);
} catch (Exception e) {
logger.error(e.getMessage());
}
}
} catch (IOException | SecurityException | IllegalArgumentException e) {
logger.error("Could not open server on TCP port {}. Reason: {}", port, e.getMessage());
}
}).start();
From Javadoc of ServerSocket:
The maximum queue length for incoming connection indications (a request to connect) is set to the backlog parameter. If a connection indication arrives when the queue is full, the connection is refused.
This post is right from SAP on Sep 20, 2012.
In short, they are still working on a release of Crystal Reports that will support VS2012 (including support for Windows 8) It will come in the form of a service pack release that updates the version currently supporting VS2010. At that time they will drop 2010/2012 from the name and simply call it Crystal Reports Developer.
If you want to download that version you can find it here.
Further, service packs etc. when released can be found here.
I would also add that I am currently using Visual Studio 2012. As long as you don't edit existing reports they continue to compile and work fine. Even on Windows 8. When I need to modify a report I can still open the project with VS2010, do my work, save my changes, and then switch back to 2012. It's a little bit of a pain but the ability for VS2010 and VS2012 to co-exist is nice in this regard. I'm also using TFS2012 and so far it hasn't had a problem with me modifying files in 2010 on a "2012" solution.
You can easily change the maximum allowed number of arguments in pylint. Just open your pylintrc file (generate it if you don't already have one) and change:
max-args=5
to:
max-args = 6 # or any value that suits you
From pylint's manual
Specifying all the options suitable for your setup and coding standards can be tedious, so it is possible to use a rc file to specify the default values. Pylint looks for /etc/pylintrc and ~/.pylintrc. The --generate-rcfile option will generate a commented configuration file according to the current configuration on standard output and exit. You can put other options before this one to use them in the configuration, or start with the default values and hand tune the configuration.
There is no keyboard shortcut for restoring the perspective directly AFAIK. To open the Window menu (where Reset Perspective resides), try Alt-W. If that does not work, I guess your Eclipse has hung for some reason. Another shortcut you might want to try is F10 (should open the main menu).
Try below code :-
1.
Display display = getWindowManager().getDefaultDisplay();
Point size = new Point();
display.getSize(size);
int width = size.x;
int height = size.y;
2.
Display display = getWindowManager().getDefaultDisplay();
int width = display.getWidth(); // deprecated
int height = display.getHeight(); // deprecated
or
int width = getWindowManager().getDefaultDisplay().getWidth();
int height = getWindowManager().getDefaultDisplay().getHeight();
3.
DisplayMetrics metrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(metrics);
metrics.heightPixels;
metrics.widthPixels;
A multi-producers and multi-consumers example, verified. It should be easy to modify it to cover other cases, single/multi producers, single/multi consumers.
from multiprocessing import Process, JoinableQueue
import time
import os
q = JoinableQueue()
def producer():
for item in range(30):
time.sleep(2)
q.put(item)
pid = os.getpid()
print(f'producer {pid} done')
def worker():
while True:
item = q.get()
pid = os.getpid()
print(f'pid {pid} Working on {item}')
print(f'pid {pid} Finished {item}')
q.task_done()
for i in range(5):
p = Process(target=worker, daemon=True).start()
# send thirty task requests to the worker
producers = []
for i in range(2):
p = Process(target=producer)
producers.append(p)
p.start()
# make sure producers done
for p in producers:
p.join()
# block until all workers are done
q.join()
print('All work completed')
Explanation:
You need to include the protocol scheme:
'http://192.168.1.61:8080/api/call'
Without the http://
part, requests
has no idea how to connect to the remote server.
Note that the protocol scheme must be all lowercase; if your URL starts with HTTP://
for example, it won’t find the http://
connection adapter either.
Try this one liner bash command to backup all your apps:
for package in $(adb shell pm list packages -3 | tr -d '\r' | sed 's/package://g'); do apk=$(adb shell pm path $package | tr -d '\r' | sed 's/package://g'); echo "Pulling $apk"; adb pull -p $apk "$package".apk; done
This command is derived from Firelord's script. I just renamed all apks to their package names for solving the issue with elcuco's script, i.e the same base.apk
file getting overwritten on Android 6.0 "Marshmallow" and above.
Note that this command backs up only 3rd party apps, coz I don't see the point of backing up built-in apps. But if you wanna backup system apps too, just omit the -3
option.
You have to enable Developer options and enable USB Debugging:
1:Go to the settings menu, and scroll down to "About phone." Tap it. 2:Scroll down to the bottom again, where you see "Build number." (Your build number may vary from ours here.) Tap it seven (7) times. After the third tap, you'll see a playful dialog that says you're four taps away from being a developer. Keep on tapping, and poof, you've got the developer settings back.
==
compares the reference value of objects whereas the equals()
method present in the java.lang.String
class compares the contents of the String
object (to another object).
AJAX stands for Asynchronous JavaScript and XML. Thus, the post to the server happens out-of-sync with the rest of the function. Try some code like this instead (it just breaks the shorthand $.post
out into the longer $.ajax
call and adds the async
option).
var it_works = false;
$.ajax({
type: 'POST',
async: false,
url: "some_file.php",
data: "",
success: function() {it_works = true;}
});
alert(it_works);
Hope this helps!
I was facing the same issue while setting up ssh for gitlab. I already have ssh for github
and i could not overwrite that.
The steps that worked for me are :
ssh-add /path/to/new/id_rsa
.config
in ~/.ssh/
using. I used vi ~/.ssh/config/
.# GitLab.com server
Host gitlab.com
RSAAuthentication yes
IdentityFile /path/to/new/id_rsa
After that restart the terminal and try pushing, it should work
You need to have a launch configuration inside Eclipse in order to adjust the JVM parameters.
After running your program with either F11 or Ctrl-F11, open the launch configurations in Run -> Run Configurations... and open your program under "Java Applications". Select the Arguments pane, where you will find "VM arguments".
This is where -Xss1024k
goes.
If you want the launch configuration to be a file in your workspace (so you can right click and run it), select the Common pane, and check the Save as -> Shared File checkbox and browse to the location you want the launch file. I usually have them in a separate folder, as we check them into CVS.
For byte arrays System.Buffer.BlockCopy will give you the very best performance.
To clone a particular branch in a git repository
- Command: git clone "repository_url" -b "branch_name"
- Example: git clone https://gitlab.com/amm.kazi/yusufoverseas.git -b routes
According to apple doc:
File-Sharing Support
File-sharing support lets apps make user data files available in iTunes 9.1 and later. An app that declares its support for file sharing makes the contents of its /Documents directory available to the user. The user can then move files in and out of this directory as needed from iTunes. This feature does not allow your app to share files with other apps on the same device; that behavior requires the pasteboard or a document interaction controller object.To enable file sharing for your app, do the following:
Add the UIFileSharingEnabled key to your app’s Info.plist file, and set the value of the key to YES. (The actual key name is "Application supports iTunes file sharing")
Put whatever files you want to share in your app’s Documents directory.
When the device is plugged into the user’s computer, iTunes displays a File Sharing section in the Apps tab of the selected device.
The user can add files to this directory or move files to the desktop.
Apps that support file sharing should be able to recognize when files have been added to the Documents directory and respond appropriately. For example, your app might make the contents of any new files available from its interface. You should never present the user with the list of files in this directory and ask them to decide what to do with those files.
For additional information about the UIFileSharingEnabled key, see Information Property List Key Reference.
This can be done by the below code.
CREATE TABLE TestTable
(FirstCol INT NOT NULL)
GO
------------------------------
-- Option 1
------------------------------
-- Adding New Column
ALTER TABLE TestTable
ADD SecondCol INT
GO
-- Updating it with Default
UPDATE TestTable
SET SecondCol = 0
GO
-- Alter
ALTER TABLE TestTable
ALTER COLUMN SecondCol INT NOT NULL
GO
Another option is to pass in your arguments in a context object.
function load(context)
{
// do whatever with context.name, context.address, etc
}
and use it like this
load({name:'Ken',address:'secret',unused:true})
This has the advantage that you can add as many named arguments as you want, and the function can use them (or not) as it sees fit.
Relative to what, your application ? If so then you can simply get the applications current Path with :
System.Environment.CurrentDirectory
And append it to the connection string
var = False
if not var: print 'learnt stuff'
Move the cursor to the begining or end with insert mode
I
- Moves the cursor to the first non blank character in the current line and enables insert mode.A
- Moves the cursor to the last character in the current line and enables insert mode.Here I
is equivalent to ^
+ i
. Similarly A
is equivalent to $
+ a
.
Just moving the cursor to the begining or end
^
- Moves the cursor to the first non blank character in the current
line0
- Moves the cursor to the first character in the current line$
- Moves the cursor to the last character in the current linebrilliant example Jonathan Leffler, to make your code work on SLES, I needed to add an additional header to allow the pid_t object :)
#include <sys/types.h>
No, that's it. You might want to make sure you have all optional library headers installed too so you don't have to recompile it later. They are listed in the documentation I think.
Also, you can install it even in the standard path if you do make altinstall
. That way it won't override your current default "python".
They both increment the number. ++i
is equivalent to i = i + 1
.
i++
and ++i
are very similar but not exactly the same. Both increment the number, but ++i
increments the number before the current expression is evaluted, whereas i++
increments the number after the expression is evaluated.
int i = 3;
int a = i++; // a = 3, i = 4
int b = ++a; // b = 4, a = 4
Actually I merged all your answers to my own solution how to solve the above problem:
The result is like that:
msbuild /t:restore /t:build /p:WebPublishMethod=FileSystem /p:publishUrl=C:\builds\MyProject\ /p:DeleteExistingFiles=True /p:LastUsedPlatform="Any CPU" /p:Configuration=Release
Consider C#'s out keyword. The compiler requires the caller of a method to apply the out keyword to any out args, even though it knows already if they are. This is intended to enhance readability. Although with modern IDEs I'm inclined to think that this is a job for syntax (or semantic) highlighting.
how to determine if a commit with particular hash have been pushed to the origin already?
# list remote branches that contain $commit
git branch -r --contains $commit
Check your short_open_tag setting (use <?php phpinfo() ?>
to see its current setting).
private SpannableStringBuilder SpannableStringBuilder(final String text, final char afterChar, final float reduceBy) {
RelativeSizeSpan smallSizeText = new RelativeSizeSpan(reduceBy);
SpannableStringBuilder ssBuilder = new SpannableStringBuilder(text);
ssBuilder.setSpan(
smallSizeText,
text.indexOf(afterChar),
text.length(),
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE
);
return ssBuilder;
}
------------------------
TextView textView =view.findViewById(R.id.textview);
String s= "123456.24";
textView.setText(SpannableStringBuilder(s, '.', 0.7f));
---------------- Result ---------------
12345.24
Using a TTL of 0 means that APC will flush all the cache when it runs out of memory. The error don't appear anymore but it makes APC far less efficient. It's a no risk, no trouble, "I don't want to do my job" decision. APC is not meant to be used that way. You should choose a TTL high enough so the most accessed pages won't expire. The best is to give enough memory so APC doesn't need to flush cache.
Just read the manual to understand how ttl is used : http://www.php.net/manual/en/apc.configuration.php#ini.apc.ttl
The solution is to increase memory allocated to APC. Do this by increasing apc.shm_size.
If APC is compiled to use Shared Segment Memory you will be limited by your operating system. Type this command to see your system limit for each segment :
sysctl -a | grep -E "shmall|shmmax"
To alocate more memory you'll have to increase the number of segments with the parameter apc.shm_segments.
If APC is using mmap memory then you have no limit. The amount of memory is still defined by the same option apc.shm_size.
If there's not enough memory on the server, then use filters option to prevent less frequently accessed php files from being cached.
But never use a TTL of 0.
As c33s said, use apc.php to check your config. Copy the file from apc package to a webfolder and point browser to it. You'll see what is really allocated and how it is used. The graphs must remain stable after hours, if they are completly changing at each refresh, then it means that your setup is wrong (APC is flushing everything). Allocate 20% more ram than what APC really use as a security margin, and check it on a regular basis.
The default of allowing only 32MB is ridiculously low. PHP was designed when servers were 64MB and most scripts were using one php file per page. Nowadays solutions like Magento require more than 10k files (~60Mb in APC). You should allow enough memory so most of php files are always cached. It's not a waste, it's more efficient to keep opcode in ram rather than having the corresponding raw php in file cache. Nowadays we can find dedicated servers with 24Gb of memory for as low as $80/month, so don't hesitate to allow several GB to APC. I put 2GB out of 24GB on a server hosting 5Magento stores and ~40 wordpress website, APC uses 1.2GB. Count 64MB for Magento installation, 40MB for a Wordpress with some plugins.
Also, if you have developpment websites on the same server. Exclude them from cache.
This worked for me:
location / {
alias /path/to/my/indexfile/;
try_files $uri /index.html;
}
This allowed me to create a catch-all URL for a javascript single-page app. All static files like css, fonts, and javascript built by npm run build
will be found if they are in the same directory as index.html
.
If the static files were in another directory, for some reason, you'd also need something like:
# Static pages generated by "npm run build"
location ~ ^/css/|^/fonts/|^/semantic/|^/static/ {
alias /path/to/my/staticfiles/;
}
Ensure position
is on your element and set the z-index
to a value higher than the elements you want to cover.
element {
position: fixed;
z-index: 999;
}
div {
position: relative;
z-index: 99;
}
It will probably require some more work than that but it's a start since you didn't post any code.
Well, guys for me it was only remove the :method => :delete
<%= link_to('Sign out', destroy_user_session_path) %>
C++ has no built-in concepts of interfaces. You can implement it using abstract classes which contains only pure virtual functions. Since it allows multiple inheritance, you can inherit this class to create another class which will then contain this interface (I mean, object interface :) ) in it.
An example would be something like this -
class Interface
{
public:
Interface(){}
virtual ~Interface(){}
virtual void method1() = 0; // "= 0" part makes this method pure virtual, and
// also makes this class abstract.
virtual void method2() = 0;
};
class Concrete : public Interface
{
private:
int myMember;
public:
Concrete(){}
~Concrete(){}
void method1();
void method2();
};
// Provide implementation for the first method
void Concrete::method1()
{
// Your implementation
}
// Provide implementation for the second method
void Concrete::method2()
{
// Your implementation
}
int main(void)
{
Interface *f = new Concrete();
f->method1();
f->method2();
delete f;
return 0;
}
<input name="password" type="text" required="" ng-model="password" placeholder="password" class="ng-dirty ng-valid ng-valid-required">
<input name="confirm_password" type="text" required="" ng-model="confirm_password" ui-validate=" '$value==password' " ui-validate-watch=" 'password' " placeholder="confirm password" class="ng-dirty ng-valid-required ng-invalid ng-invalid-validator">
<span ng-show="form.confirm_password.$error.validator">Passwords do not match!</span>
password errors: {
"required": false,
"validator": true
}
Try using something like
Creates or overwrites a file in the specified path.
I ran across this error recently using a javascript library which changes the parameters of a function based on conditions.
You can test an object to see if it has the function. I would only do this in scenarios where you don't control what is getting passed to you.
if( param.indexOf != undefined ) {
// we have a string or other object that
// happens to have a function named indexOf
}
You can test this in your browser console:
> (3).indexOf == undefined;
true
> "".indexOf == undefined;
false
A pseudo environment variable named errorlevel
stores the exit code:
echo Exit Code is %errorlevel%
Also, the if
command has a special syntax:
if errorlevel
See if /?
for details.
@echo off
my_nify_exe.exe
if errorlevel 1 (
echo Failure Reason Given is %errorlevel%
exit /b %errorlevel%
)
Warning: If you set an environment variable name errorlevel
, %errorlevel%
will return that value and not the exit code. Use (set errorlevel=
) to clear the environment variable, allowing access to the true value of errorlevel
via the %errorlevel%
environment variable.
even shorter if you can lose the yearStart value:
var yearStart = 2000;
var yearEnd = 2040;
var arr = [];
while(yearStart < yearEnd+1){
arr.push(yearStart++);
}
UPDATE: If you can use the ES6 syntax you can do it the way proposed here:
let yearStart = 2000;
let yearEnd = 2040;
let years = Array(yearEnd-yearStart+1)
.fill()
.map(() => yearStart++);
HTML
<div id="myDiv" style="display:none;" class="answer_list" >WELCOME</div>
<input type="button" name="answer" onclick="ShowDiv()" />
JavaScript
function ShowDiv() {
document.getElementById("myDiv").style.display = "";
}
Or if you wanted to use jQuery with a nice little animation:
<input id="myButton" type="button" name="answer" />
$('#myButton').click(function() {
$('#myDiv').toggle('slow', function() {
// Animation complete.
});
});
Because of your date format, you can use this code:
if(parseInt(first.replace(/-/g,""),10) > parseInt(second.replace(/-/g,""),10)){
//...
}
It will check whether 20121121
number is bigger than 20121103
or not.
xxx.match(yyy, 'g').length
They're essentially the same... They both use swig for templating, they both use karma and mocha for tests, passport integration, nodemon, etc.
Why so similar? Mean.js is a fork of Mean.io and both initiatives were started by the same guy... Mean.io is now under the umbrella of the company Linnovate and looks like the guy (Amos Haviv) stopped his collaboration with this company and started Mean.js. You can read more about the reasons here.
Now... main (or little) differences you can see right now are:
SCAFFOLDING AND BOILERPLATE GENERATION
Mean.io uses a custom cli tool named 'mean'
Mean.js uses Yeoman Generators
MODULARITY
Mean.io uses a more self-contained node packages modularity with client and server files inside the modules.
Mean.js uses modules just in the front-end (for angular), and connects them with Express. Although they were working on vertical modules as well...
BUILD SYSTEM
Mean.io has recently moved to gulp
Mean.js uses grunt
DEPLOYMENT
Both have Dockerfiles in their respective repos, and Mean.io has one-click install on Google Compute Engine, while Mean.js can also be deployed with one-click install on Digital Ocean.
DOCUMENTATION
Mean.io has ok docs
Mean.js has AWESOME docs
COMMUNITY
Mean.io has a bigger community since it was the original boilerplate
Mean.js has less momentum but steady growth
On a personal level, I like more the philosophy and openness of MeanJS and more the traction and modules/packages approach of MeanIO. Both are nice, and you'll end probably modifying them, so you can't really go wrong picking one or the other. Just take them as starting point and as a learning exercise.
MEAN is a generic way (coined by Valeri Karpov) to describe a boilerplate/framework that takes "Mongo + Express + Angular + Node" as the base of the stack. You can find frameworks with this stack that use other denomination, some of them really good for RAD (Rapid Application Development) and building SPAs. Eg:
You also have Hackathon Starter. It doesn't have A of MEAN (it is 'MEN'), but it rocks..
Have fun!
I don't know if it would work, but maybe you could break the page into columns using the multicol package.
\usepackage{multicol}
\begin{document}
\begin{multicols}{2}[Your list here]
\end{multicols}
In order to do this without FuncAnimation (eg you want to execute other parts of the code while the plot is being produced or you want to be updating several plots at the same time), calling draw
alone does not produce the plot (at least with the qt backend).
The following works for me:
import matplotlib.pyplot as plt
plt.ion()
class DynamicUpdate():
#Suppose we know the x range
min_x = 0
max_x = 10
def on_launch(self):
#Set up plot
self.figure, self.ax = plt.subplots()
self.lines, = self.ax.plot([],[], 'o')
#Autoscale on unknown axis and known lims on the other
self.ax.set_autoscaley_on(True)
self.ax.set_xlim(self.min_x, self.max_x)
#Other stuff
self.ax.grid()
...
def on_running(self, xdata, ydata):
#Update data (with the new _and_ the old points)
self.lines.set_xdata(xdata)
self.lines.set_ydata(ydata)
#Need both of these in order to rescale
self.ax.relim()
self.ax.autoscale_view()
#We need to draw *and* flush
self.figure.canvas.draw()
self.figure.canvas.flush_events()
#Example
def __call__(self):
import numpy as np
import time
self.on_launch()
xdata = []
ydata = []
for x in np.arange(0,10,0.5):
xdata.append(x)
ydata.append(np.exp(-x**2)+10*np.exp(-(x-7)**2))
self.on_running(xdata, ydata)
time.sleep(1)
return xdata, ydata
d = DynamicUpdate()
d()
Here you go:
div{
display: none;
}
document.querySelector("button").addEventListener("click", function(){
document.querySelector("div").style.display = "block";
});
<div>blah blah blah</div>
<button>Show</button>
LIVE DEMO: http://jsfiddle.net/DerekL/p78Qq/
First you have to ensure that there is a SMTP server listening on port 25.
To look whether you have the service, you can try using TELNET client, such as:
C:\> telnet localhost 25
(telnet client by default is disabled on most recent versions of Windows, you have to add/enable the Windows component from Control Panel. In Linux/UNIX usually telnet client is there by default.
$ telnet localhost 25
If it waits for long then time out, that means you don't have the required SMTP service. If successfully connected you enter something and able to type something, the service is there.
If you don't have the service, you can use these:
If you are sure that you already have the service, may be the SMTP requires additional security credentials. If you can tell me what SMTP server listening on port 25 I may be able to tell you more.
Also, you can use external_app_launcher: https://pub.dev/packages/external_app_launcher
To know if is installed:
await LaunchApp.isAppInstalled(androidPackageName: 'com.google.android.maps.MapView', iosUrlScheme: 'comgooglemaps://');
To open:
await LaunchApp.openApp(
androidPackageName: 'com.google.android.maps.MapView',
iosUrlScheme: 'comgooglemaps://',
);
Use:
conda create -n py37 -c anaconda anaconda=5.3.1
conda env export -n py37 --file env.yaml
Locate the env.yaml file in C:\Windows\System32
and run the cmd as administrator:
conda env update -n root -f env.yaml
Then it works!
I Faced same problem but it work for.I executed the Pod Install Command Before 3 Hour ago after that its updated what i want. You just need to Keep tracking the "Activity Monitor" You can see their "git remote https" or "Git" in disk tab. It will download around 330 Mb then it shows 1 GB and After some minutes it will starts installing. No need to Execute extra command.
Note : during downloading your MAC need to in continuously Active mode.If your system goes in sleep mode then CPU stop the process and you will get a error Like Add manually.
You can customize the JsonSerializerSettings
by using the Formatters.JsonFormatter.SerializerSettings
property in the HttpConfiguration
object.
For example, you could do that in the Application_Start() method:
protected void Application_Start()
{
HttpConfiguration config = GlobalConfiguration.Configuration;
config.Formatters.JsonFormatter.SerializerSettings.Formatting =
Newtonsoft.Json.Formatting.Indented;
}
public String getUsername() {
AccountManager manager = AccountManager.get(this);
Account[] accounts = manager.getAccountsByType("com.google");
List<String> possibleEmails = new LinkedList<String>();
for (Account account : accounts) {
// TODO: Check possibleEmail against an email regex or treat
// account.name as an email address only for certain account.type values.
possibleEmails.add(account.name);
}
if (!possibleEmails.isEmpty() && possibleEmails.get(0) != null) {
String email = possibleEmails.get(0);
String[] parts = email.split("@");
if (parts.length > 1)
return parts[0];
}
return null;
}
Try this code, I get working fine.
webSettings.setSupportZoom(true);
webSettings.setBuiltInZoomControls(true);
webSettings.setDisplayZoomControls(false);
The whole point of a class is that you create an instance, and that instance encapsulates a set of data. So it's wrong to say that your variables are global within the scope of the class: say rather that an instance holds attributes, and that instance can refer to its own attributes in any of its code (via self.whatever
). Similarly, any other code given an instance can use that instance to access the instance's attributes - ie instance.whatever
.
I know this is old and an answer has been accepted, but you can find the index of the string in a couple lines of code using:
var str : String = "abcdefghi"
let characterToFind: Character = "c"
let characterIndex = find(str, characterToFind) //returns 2
Some other great information about Swift strings here Strings in Swift
'Caret' is the word you are looking for. I do believe though, that it is part of the browsers design, and not within the grasp of css.
However, here is an interesting write up on simulating a caret change using Javascript and CSS http://www.dynamicdrive.com/forums/showthread.php?t=17450 It seems a bit hacky to me, but probably the only way to accomplish the task. The main point of the article is:
We will have a plain textarea somewhere in the screen out of the view of the viewer and when the user clicks on our "fake terminal" we will focus into the textarea and when the user starts typing we will simply append the data typed into the textarea to our "terminal" and that's that.
HERE is a demo in action
There is a new css property caret-color
which applies to the caret of an input
or contenteditable
area. The support is growing but not 100%, and this only affects color, not width or other types of appearance.
input{_x000D_
caret-color: rgb(0, 200, 0);_x000D_
}
_x000D_
<input type="text"/>
_x000D_
s = "BINGO"
print(" ".join(s))
Should do it.
When we work on development environment and merge our code to staging/production branch then Git no fast forward can be a better option. Usually when we work in development branch for a single feature we tend to have multiple commits. Tracking changes with multiple commits can be inconvenient later on. If we merge with staging/production branch using Git no fast forward then it will have only 1 commit. Now anytime we want to revert the feature, just revert that commit. Life is easy.
After
apply plugin: 'com.android.application'
You should add this:
repositories {
mavenCentral()
maven {
url "https://repository-achartengine.forge.cloudbees.com/snapshot/"
}
}
@Benjamin explained the reason.
If you have a maven with authentication you can use:
repositories {
mavenCentral()
maven {
credentials {
username xxx
password xxx
}
url 'http://mymaven/xxxx/repositories/releases/'
}
}
It is important the order.
It is better to use .Value2() instead of .Value(). This is faster and gives the exact value in the cell. For certain type of data, truncation can be observed when .Value() is used.
Like this:
>>> s='1\t2\t3\t4\t5'
>>> [x for x in s.split('\t')]
['1', '2', '3', '4', '5']
For a file:
# create test file:
>>> with open('tabs.txt','w') as o:
... s='\n'.join(['\t'.join(map(str,range(i,i+10))) for i in [0,10,20,30]])
... print >>o, s
#read that file:
>>> with open('tabs.txt','r') as f:
... LoL=[x.strip().split('\t') for x in f]
...
>>> LoL
[['0', '1', '2', '3', '4', '5', '6', '7', '8', '9'],
['10', '11', '12', '13', '14', '15', '16', '17', '18', '19'],
['20', '21', '22', '23', '24', '25', '26', '27', '28', '29'],
['30', '31', '32', '33', '34', '35', '36', '37', '38', '39']]
>>> LoL[2][3]
23
If you want the input transposed:
>>> with open('tabs.txt','r') as f:
... LoT=zip(*(line.strip().split('\t') for line in f))
...
>>> LoT[2][3]
'32'
Or (better still) use the csv module in the default distribution...
Generally:
ListViewItem item = new ListViewItem("Column1Text")
{ Tag = optionalRefToSourceObject };
item.SubItems.Add("Column2Text");
item.SubItems.Add("Column3Text");
myListView.Items.Add(item);
You no need to assign this to a local variable if you use arrow function. Arrow functions takes binding automatically and you can stay away with scope related issues.
Below code explains how to use arrow function in different scenarios
componentDidMount = () => {
VK.init(() => {
console.info("API initialisation successful");
VK.api('users.get',{fields: 'photo_50'},(data) => {
if(data.response){
that.setState({ //this available here and you can do setState
FirstName: data.response[0].first_name
});
console.info(that.state.FirstName);
}
});
}, () => {
console.info("API initialisation failed");
}, '5.34');
},
I know you said "ignore what the macro does", but people will find this question by searching based on the title, so I think discussion of further techniques to emulate functions with macros are warranted.
Closest I know of is:
#define MACRO(X,Y) \
do { \
auto MACRO_tmp_1 = (X); \
auto MACRO_tmp_2 = (Y); \
using std::cout; \
using std::endl; \
cout << "1st arg is:" << (MACRO_tmp_1) << endl; \
cout << "2nd arg is:" << (MACRO_tmp_2) << endl; \
cout << "Sum is:" << (MACRO_tmp_1 + MACRO_tmp_2) << endl; \
} while(0)
This does the following:
However, it still differs from a function in that:
I have been researching this for quite a while and I am trying to do the same thing, so hopefully this will help someone else. I have been using crossbrowsertesting.com and literally testing this in almost every browser known to man. The solution I've got currently works in Opera, Chrome, Firefox 3.5+, IE8+, iPhone 3GS, iPhone 4, iPhone 4s, iPhone 5, iPhone 5s, iPad 1+, Android 2.3+, Windows Phone 8.
Dynamically Changing Sources
Dynamically changing the video is very difficult, and if you want a Flash fallback you will have to remove the video from the DOM/page and re-add it so that Flash will update because Flash will not recognize dynamic updates to Flash vars. If you're going to use JavaScript to change it dynamically, I would completely remove all <source>
elements and just use canPlayType
to set the src
in JavaScript and break
or return
after the first supported video type and don't forget to dynamically update the flash var mp4. Also, some browsers won't register that you changed the source unless you call video.load()
. I believe the issue with .load()
you were experiencing can be fixed by first calling video.pause()
. Removing and adding video elements can slow down the browser because it continues buffering the removed video, but there's a workaround.
Cross-browser Support
As far as the actual cross-browser portion, I arrived at Video For Everybody as well. I already tried the MediaelementJS Wordpress plugin, which turned out to cause a lot more issues than it resolved. I suspect the issues were due to the Wordpress plug-in and not the actually library. I'm trying to find something that works without JavaScript, if possible. So far, what I've come up with is this plain HTML:
<video width="300" height="150" controls="controls" poster="http://sandbox.thewikies.com/vfe-generator/images/big-buck-bunny_poster.jpg" class="responsive">
<source src="http://clips.vorwaerts-gmbh.de/big_buck_bunny.ogv" type="video/ogg" />
<source src="http://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4" type="video/mp4" />
<source src="http://clips.vorwaerts-gmbh.de/big_buck_bunny.webm" type="video/webm" />
<source src="http://alex-watson.net/wp-content/uploads/2014/07/big_buck_bunny.iphone.mp4" type="video/mp4" />
<source src="http://alex-watson.net/wp-content/uploads/2014/07/big_buck_bunny.iphone3g.mp4" type="video/mp4" />
<object type="application/x-shockwave-flash" data="http://releases.flowplayer.org/swf/flowplayer-3.2.1.swf" width="561" height="297">
<param name="movie" value="http://releases.flowplayer.org/swf/flowplayer-3.2.1.swf" />
<param name="allowFullScreen" value="true" />
<param name="wmode" value="transparent" />
<param name="flashVars" value="config={'playlist':['http://sandbox.thewikies.com/vfe-generator/images/big-buck-bunny_poster.jpg',{'url':'http://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4','autoPlay':false}]}" />
<img alt="No Video" src="http://sandbox.thewikies.com/vfe-generator/images/big-buck-bunny_poster.jpg" width="561" height="297" title="No video playback capabilities, please download the video below" />
</object>
<strong>Download video:</strong> <a href="video.mp4">MP4 format</a> | <a href="video.ogv">Ogg format</a> | <a href="video.webm">WebM format</a>
</video>
Important notes:
<source>
because Mac OS Firefox quits trying to play the video if it encounters an MP4 as the first <source>
.video/ogg
, not video/ogv
.iphone.mp4
file is for iPhone 4+ which will only play videos that are MPEG-4 with H.264 Baseline 3 Video and AAC audio. The best transcoder I found for that format is Handbrake, using the iPhone & iPod Touch preset will work on iPhone 4+, but to get iPhone 3GS to work you need to use the iPod preset which has much lower resolution which I added as video.iphone3g.mp4
.media
attribute on the <source>
elements to target mobile devices with media queries, but right now the older Apple and Android devices don't support it well enough.Edit:
I was porting one application from Visual C to gcc over Linux and I had the same problem with
malloc.c:3096: sYSMALLOc: Assertion using gcc on UBUNTU 11.
I moved the same code to a Suse distribution (on other computer ) and I don't have any problem.
I suspect that the problems are not in our programs but in the own libc.
To support emojis use this
('Dragon ').split(/(?!$)/u);
=> ['D', 'r', 'a', 'g', 'o', 'n', ' ', '']
columns by index:
# selected column index: 1, 6, 7
new = old.iloc[: , [1, 6, 7]].copy()
change the input boxes like
<input type="checkbox" name="c1" onclick="showMe('div1')">Show Hide Checkbox
<input type="checkbox" name="c1" onclick="showMe('div1')">Show Hide Checkbox
<input type="checkbox" name="c1" onclick="showMe('div1')">Show Hide Checkbox
<input type="checkbox" name="c1" onclick="showMe('div1')">Show Hide Checkbox
and js code as
function showMe (box) {
var chboxs = document.getElementsByName("c1");
var vis = "none";
for(var i=0;i<chboxs.length;i++) {
if(chboxs[i].checked){
vis = "block";
break;
}
}
document.getElementById(box).style.display = vis;
}
here is a demo fiddle
Gmail requires you to use a secure connection. This can be set in your web.config like this:
<network host="smtp.gmail.com" enableSsl="true" ... />
OR
The SSL should be enable on the webserver as well. Refer following link
I just patch nginx binary replacing path /var/log/nginx/error.log
and other with local path.
$ perl -pi \
-e 's@/var/log/nginx/@_var_log_nginx/@g;' \
-e 's@/var/lib/nginx/@_var_lib_nginx/@g;' \
-e 's@/var/run/nginx.pid@_var_run/nginx.pid@g;' \
-e 's@/run/nginx.pid@_run/nginx.pid@g;' \
< /usr/sbin/nginx > nginx
$ chmod +x nginx
$ mkdir _var_log_nginx _var_lib_nginx _var_run _run
$ ./nginx -p . -c nginx.conf
It works for testing.
The type comes after the name in TypeScript, partly because types are optional.
So your line:
HTMLElement el = document.getElementById('content');
Needs to change to:
const el: HTMLElement = document.getElementById('content');
Back in 2013, the type HTMLElement
would have been inferred from the return value of getElementById
, this is still the case if you aren't using strict null checks (but you ought to be using the strict modes in TypeScript). If you are enforcing strict null checks you will find the return type of getElementById
has changed from HTMLElement
to HTMLElement | null
. The change makes the type more correct, because you don't always find an element.
So when using type mode, you will be encouraged by the compiler to use a type assertion to ensure you found an element. Like this:
const el: HTMLElement | null = document.getElementById('content');
if (el) {
const definitelyAnElement: HTMLElement = el;
}
I have included the types to demonstrate what happens when you run the code. The interesting bit is that el
has the narrower type HTMLElement
within the if
statement, due to you eliminating the possibility of it being null.
You can do exactly the same thing, with the same resulting types, without any type annotations. They will be inferred by the compiler, thus saving all that extra typing:
const el = document.getElementById('content');
if (el) {
const definitelyAnElement = el;
}
1.) Check here. Basically do this:
Function FileExists(ByVal FileToTest As String) As Boolean
FileExists = (Dir(FileToTest) <> "")
End Function
I'll leave it to you to figure out the various error handling needed but these are among the error handling things I'd be considering:
2.) How To Delete a File. Look at this. Basically use the Kill command but you need to allow for the possibility of a file being read-only. Here's a function for you:
Sub DeleteFile(ByVal FileToDelete As String)
If FileExists(FileToDelete) Then 'See above
' First remove readonly attribute, if set
SetAttr FileToDelete, vbNormal
' Then delete the file
Kill FileToDelete
End If
End Sub
Again, I'll leave the error handling to you and again these are the things I'd consider:
Should this behave differently for a directory vs. a file? Should a user have to explicitly have to indicate they want to delete a directory?
Do you want the code to automatically reset the read-only attribute or should the user be given some sort of indication that the read-only attribute is set?
EDIT: Marking this answer as community wiki so anyone can modify it if need be.
Functions that send/modify HTTP headers must be invoked before any output is made. summary ? Otherwise the call fails:
Warning: Cannot modify header information - headers already sent (output started at script:line)
Some functions modifying the HTTP header are:
Output can be:
Unintentional:
<?php
or after ?>
Intentional:
print
, echo
and other functions producing output<html>
sections prior <?php
code. To understand why headers must be sent before output it's necessary to look at a typical HTTP response. PHP scripts mainly generate HTML content, but also pass a set of HTTP/CGI headers to the webserver:
HTTP/1.1 200 OK
Powered-By: PHP/5.3.7
Vary: Accept-Encoding
Content-Type: text/html; charset=utf-8
<html><head><title>PHP page output page</title></head>
<body><h1>Content</h1> <p>Some more output follows...</p>
and <a href="/"> <img src=internal-icon-delayed> </a>
The page/output always follows the headers. PHP has to pass the headers to the webserver first. It can only do that once. After the double linebreak it can nevermore amend them.
When PHP receives the first output (print
, echo
, <html>
) it will
flush all collected headers. Afterwards it can send all the output
it wants. But sending further HTTP headers is impossible then.
The header()
warning contains all relevant information to
locate the problem cause:
Warning: Cannot modify header information - headers already sent by (output started at /www/usr2345/htdocs/auth.php:52) in /www/usr2345/htdocs/index.php on line 100
Here "line 100" refers to the script where the header()
invocation failed.
The "output started at" note within the parenthesis is more significant.
It denominates the source of previous output. In this example it's auth.php
and line 52
. That's where you had to look for premature output.
Typical causes:
Intentional output from print
and echo
statements will terminate
the opportunity to send HTTP headers. The application flow must
be restructured to avoid that. Use functions
and templating schemes. Ensure header()
calls occur before messages
are written out.
Functions that produce output include
print
, echo
, printf
, vprintf
trigger_error
, ob_flush
, ob_end_flush
, var_dump
, print_r
readfile
, passthru
, flush
, imagepng
, imagejpeg
among others and user-defined functions.
Unparsed HTML sections in a .php
file are direct output as well.
Script conditions that will trigger a header()
call must be noted
before any raw <html>
blocks.
<!DOCTYPE html>
<?php
// Too late for headers already.
Use a templating scheme to separate processing from output logic.
<?php
for "script.php line 1" warningsIf the warning refers to output in line 1
, then it's mostly
leading whitespace, text or HTML before the opening <?php
token.
<?php
# There's a SINGLE space/newline before <? - Which already seals it.
Similarly it can occur for appended scripts or script sections:
?>
<?php
PHP actually eats up a single linebreak after close tags. But it won't compensate multiple newlines or tabs or spaces shifted into such gaps.
Linebreaks and spaces alone can be a problem. But there are also "invisible"
character sequences which can cause this. Most famously the
UTF-8 BOM (Byte-Order-Mark)
which isn't displayed by most text editors. It's the byte sequence EF BB BF
, which
is optional and redundant for UTF-8 encoded documents. PHP however has to treat
it as raw output. It may show up as the characters 
in the output (if the client
interprets the document as Latin-1) or similar "garbage".
In particular graphical editors and Java based IDEs are oblivious to its presence. They don't visualize it (obliged by the Unicode standard). Most programmer and console editors however do:
There it's easy to recognize the problem early on. Other editors may identify
its presence in a file/settings menu (Notepad++ on Windows can identify and
remedy the problem),
Another option to inspect the BOMs presence is resorting to an hexeditor.
On *nix systems hexdump
is usually available,
if not a graphical variant which simplifies auditing these and other issues:
An easy fix is to set the text editor to save files as "UTF-8 (no BOM)" or similar such nomenclature. Often newcomers otherwise resort to creating new files and just copy&pasting the previous code back in.
There are also automated tools to examine and rewrite text files
(sed
/awk
or recode
).
For PHP specifically there's the phptags
tag tidier.
It rewrites close and open tags into long and short forms, but also easily
fixes leading and trailing whitespace, Unicode and UTF-x BOM issues:
phptags --whitespace *.php
It's sane to use on a whole include or project directory.
?>
If the error source is mentioned as behind the
closing ?>
then this is where some whitespace or raw text got written out.
The PHP end marker does not terminate script executation at this
point. Any text/space characters after it will be written out as page content
still.
It's commonly advised, in particular to newcomers, that trailing ?>
PHP
close tags should be omitted. This eschews a small portion of these cases.
(Quite commonly include()d
scripts are the culprit.)
It's typically a PHP extension or php.ini setting if no error source is concretized.
gzip
stream encoding setting
or the ob_gzhandler
.extension=
module
generating an implicit PHP startup/warning message.If another PHP statement or expression causes a warning message or notice being printeded out, that also counts as premature output.
In this case you need to eschew the error,
delay the statement execution, or suppress the message with e.g.
isset()
or @()
-
when either doesn't obstruct debugging later on.
If you have error_reporting
or display_errors
disabled per php.ini
,
then no warning will show up. But ignoring errors won't make the problem go
away. Headers still can't be sent after premature output.
So when header("Location: ...")
redirects silently fail it's very
advisable to probe for warnings. Reenable them with two simple commands
atop the invocation script:
error_reporting(E_ALL);
ini_set("display_errors", 1);
Or set_error_handler("var_dump");
if all else fails.
Speaking of redirect headers, you should often use an idiom like this for final code paths:
exit(header("Location: /finished.html"));
Preferrably even a utility function, which prints a user message
in case of header()
failures.
PHPs output buffering is a workaround to alleviate this issue. It often works reliably, but shouldn't substitute for proper application structuring and separating output from control logic. Its actual purpose is minimizing chunked transfers to the webserver.
The output_buffering=
setting nevertheless can help.
Configure it in the php.ini
or via .htaccess
or even .user.ini on
modern FPM/FastCGI setups.
Enabling it will allow PHP to buffer output instead of passing it to the webserver
instantly. PHP thus can aggregate HTTP headers.
It can likewise be engaged with a call to ob_start();
atop the invocation script. Which however is less reliable for multiple reasons:
Even if <?php ob_start(); ?>
starts the first script, whitespace or a
BOM might get shuffled before, rendering it ineffective.
It can conceal whitespace for HTML output. But as soon as the application
logic attempts to send binary content (a generated image for example),
the buffered extraneous output becomes a problem. (Necessitating ob_clean()
as furher workaround.)
The buffer is limited in size, and can easily overrun when left to defaults. And that's not a rare occurence either, difficult to track down when it happens.
Both approaches therefore may become unreliable - in particular when switching between development setups and/or production servers. Which is why output buffering is widely considered just a crutch / strictly a workaround.
See also the basic usage example in the manual, and for more pros and cons:
If you didn't get the headers warning before, then the output buffering php.ini setting has changed. It's likely unconfigured on the current/new server.
headers_sent()
You can always use headers_sent()
to probe if
it's still possible to... send headers. Which is useful to conditionally print
an info or apply other fallback logic.
if (headers_sent()) {
die("Redirect failed. Please click on this link: <a href=...>");
}
else{
exit(header("Location: /user.php"));
}
Useful fallback workarounds are:
<meta>
tagIf your application is structurally hard to fix, then an easy (but
somewhat unprofessional) way to allow redirects is injecting a HTML
<meta>
tag. A redirect can be achieved with:
<meta http-equiv="Location" content="http://example.com/">
Or with a short delay:
<meta http-equiv="Refresh" content="2; url=../target.html">
This leads to non-valid HTML when utilized past the <head>
section.
Most browsers still accept it.
As alternative a JavaScript redirect can be used for page redirects:
<script> location.replace("target.html"); </script>
While this is often more HTML compliant than the <meta>
workaround,
it incurs a reliance on JavaScript-capable clients.
Both approaches however make acceptable fallbacks when genuine HTTP header() calls fail. Ideally you'd always combine this with a user-friendly message and clickable link as last resort. (Which for instance is what the http_redirect() PECL extension does.)
setcookie()
and session_start()
are also affectedBoth setcookie()
and session_start()
need to send a Set-Cookie:
HTTP header.
The same conditions therefore apply, and similar error messages will be generated
for premature output situations.
(Of course they're furthermore affected by disabled cookies in the browser, or even proxy issues. The session functionality obviously also depends on free disk space and other php.ini settings, etc.)
var sVal = '234';
var iNum = parseInt(sVal); //Output will be 234.
http://www.jquerybyexample.net/2013/02/jquery-convert-string-to-integer.html
Firstly, double quote character is nothing special in regex - it's just another character, so it doesn't need escaping from the perspective of regex.
However, because java uses double quotes to delimit String constants, if you want to create a string in java with a double quote in it, you must escape them.
This code will test if your String matches:
if (str.matches("\".*\"")) {
// this string starts and end with a double quote
}
Note that you don't need to add start and end of input markers (^
and $
) in the regex, because matches()
requires that the whole input be matched to return true - ^
and $
are implied.
Please see Update select2 data without rebuilding the control as this may be a duplicate. Another way is to destroy and then recreate the select2 element.
$("#dropdown").select2("destroy");
$("#dropdown").select2();
If you are having problems with resetting the state/region on country change try clearing the current value with
$("#dropdown").select2("val", "");
You can view the documentation here http://ivaynberg.github.io/select2/ that outlines nearly/all features. Select2 supports events such as change
that can be used to update the subsequent dropdowns.
$("#dropdown").on("change", function(e) {});
You can now update the data/list without rebuilding the control using:
fooBarDropdown.select2({
data: fromAccountData
});
Here's what I've done:
.resize {
width: 400px;
height: auto;
}
.resize {
width: 300px;
height: auto;
}
<img class="resize" src="example.jpg"/>
This will keep the image aspect ratio the same.
LinkedHashMap maintains the order of the keys.
java.util.LinkedHashMap appears to work just like a normal HashMap otherwise.
npm rebuild node-sass
was giving me errors (Ubuntu) and npm install gulp-sass
didn't make the error go away.
Saw a solution on GitHub which worked for me:
npm uninstall --save-dev gulp-sass
npm install --save-dev gulp-sass
Can I have each consumer receive the same messages? Ie, both consumers get message 1, 2, 3, 4, 5, 6? What is this called in AMQP/RabbitMQ speak? How is it normally configured?
No, not if the consumers are on the same queue. From RabbitMQ's AMQP Concepts guide:
it is important to understand that, in AMQP 0-9-1, messages are load balanced between consumers.
This seems to imply that round-robin behavior within a queue is a given, and not configurable. Ie, separate queues are required in order to have the same message ID be handled by multiple consumers.
Is this commonly done? Should I just have the exchange route the message into two separate queues, with a single consumer, instead?
No it's not, single queue/multiple consumers with each each consumer handling the same message ID isn't possible. Having the exchange route the message onto into two separate queues is indeed better.
As I don't require too complex routing, a fanout exchange will handle this nicely. I didn't focus too much on Exchanges earlier as node-amqp has the concept of a 'default exchange' allowing you to publish messages to a connection directly, however most AMQP messages are published to a specific exchange.
Here's my fanout exchange, both sending and receiving:
var amqp = require('amqp');
var connection = amqp.createConnection({ host: "localhost", port: 5672 });
var count = 1;
connection.on('ready', function () {
connection.exchange("my_exchange", options={type:'fanout'}, function(exchange) {
var sendMessage = function(exchange, payload) {
console.log('about to publish')
var encoded_payload = JSON.stringify(payload);
exchange.publish('', encoded_payload, {})
}
// Recieve messages
connection.queue("my_queue_name", function(queue){
console.log('Created queue')
queue.bind(exchange, '');
queue.subscribe(function (message) {
console.log('subscribed to queue')
var encoded_payload = unescape(message.data)
var payload = JSON.parse(encoded_payload)
console.log('Recieved a message:')
console.log(payload)
})
})
setInterval( function() {
var test_message = 'TEST '+count
sendMessage(exchange, test_message)
count += 1;
}, 2000)
})
})
This should solve your problem:
select replace(to_char(a, '90D90'),'.00','')
from
(
select 50 a from dual
union
select 50.57 from dual
union
select 5.57 from dual
union
select 0.35 from dual
union
select 0.4 from dual
);
Give a look also as this SQL Fiddle for test.
You should in fact do both, so that all browsers will find the icon.
Naming the file "favicon.ico" and putting it in the root of your website is the method "discouraged" by W3C:
Method 2 (Discouraged): Putting the favicon at a predefined URI
A second method for specifying a favicon relies on using a predefined URI to identify the image: "/favicon", which is relative to the server root. This method works because some browsers have been programmed to look for favicons using that URI.
W3C - How to add a favicon to your site
So, to cover all situations, I always do that in addition to the recommended method of adding a "rel" attribute and pointing it to the same .ico file.
UPDATE
As of the latest versions of jQuery, the following method doesn't assign properties passed in the second Object
Previous answer
I feel using document.createElement('div')
together with jQuery
is faster:
$(document.createElement('div'), {
text: 'Div text',
'class': 'className'
}).appendTo('#parentDiv');
It is better if you don't kill a thread. A way could be to introduce a "try" block into the thread's cycle and to throw an exception when you want to stop the thread (for example a break/return/... that stops your for/while/...). I've used this on my app and it works...
Instead of wading through the description of all the options, you can jump to 3.4.3 Short Options Cross Reference
under the info tar
command.
x
means --extract
. v
means --verbose
. f
means --file
. z
means --gzip
. You can combine one-letter arguments together, and f
takes an argument, the filename. There is something you have to watch out for:
Short options' letters may be clumped together, but you are not required to do this (as compared to old options; see below). When short options are clumped as a set, use one (single) dash for them all, e.g., ''tar' -cvf'. Only the last option in such a set is allowed to have an argument(1).
This old way of writing 'tar' options can surprise even experienced users. For example, the two commands:tar cfz archive.tar.gz file tar -cfz archive.tar.gz file
are quite different. The first example uses 'archive.tar.gz' as the value for option 'f' and recognizes the option 'z'. The second example, however, uses 'z' as the value for option 'f' -- probably not what was intended.
All of the other answers here are correct but do not explain why what you were trying was wrong. When you do myList[i[0]]
you are telling Python that i
is a tuple and you want the value or the first element of tuple i
as the index for myList.
In the majority of programming languages when you need to access a nested data type (such as arrays, lists, or tuples), you append the brackets to get to the innermost item. The first bracket gives you the location of the tuple in your list. The second bracket gives you the location of the item in the tuple.
This is a quick rudimentary example that I came up with:
info = [ ( 1, 2), (3, 4), (5, 6) ]
info[0][0] == 1
info[0][1] == 2
info[1][0] == 3
info[1][1] == 4
info[2][0] == 5
info[2][1] == 6
I wonder! Why i don't write the whole query like
GO
create procedure [dbo].[spAddNewClass] @ClassName varchar(20),@ClassFee int
as
begin
insert into tblClass values (@ClassName,@ClassFee)
end
GO
create procedure [dbo].[spAddNewSection] @SectionName varchar(20),@ClassID int
as
begin
insert into tblSection values(@SectionName,@ClassID)
end
Go
create procedure test
as
begin
select * from tblstudent
end
i already know that first two procedures are already exist sql will run the query will give the error of first two procedures but still it will create the last procedure SQl is itself taking care of what is already exist this is what i always do to all my clients!
I am using this one with my codes.
Simply add this to your criteria:
criteria.setResultTransformer(Criteria.DISTINCT_ROOT_ENTITY);
that code will be like the select distinct * from table of the native sql. Hope this one helps.
There is a solution to this if you really need a static access to the current context. In Startup.Configure(….)
app.Use(async (httpContext, next) =>
{
CallContext.LogicalSetData("CurrentContextKey", httpContext);
try
{
await next();
}
finally
{
CallContext.FreeNamedDataSlot("CurrentContextKey");
}
});
And when you need it you can get it with :
HttpContext context = CallContext.LogicalGetData("CurrentContextKey") as HttpContext;
I hope that helps. Keep in mind this workaround is when you don’t have a choice. The best practice is to use de dependency injection.
Here are three ways.
Raising KeyError
when key is not found:
result = [mapping[k] for k in iterable]
Default values for missing keys.
result = [mapping.get(k, default_value) for k in iterable]
Skipping missing keys.
result = [mapping[k] for k in iterable if k in mapping]
Playing around with different project properties, I found that the project build order was the problem. The project that generated the files I wanted to copy was built second, but the project that was running the batch file as a post-build event was built first, so I simply attached the build event to the second project instead, and it works just fine. Thanks for your help, everyone, though.
use myString.c_str()
if you want a c-like string (const char*
) to use with printf
thanks
opencv has changed some functions and moved them to their opencv_contrib repo so you have to call the mentioned method with:
recognizer = cv2.face.createLBPHFaceRecognizer()
Note: You can see this issue about missing docs. Try using help function help(cv2.face.createLBPHFaceRecognizer)
for more details.
To stream the file to the browser, see Stack Overflow question How to stream a PDF file as binary to the browser using .NET 2.0 - note that, with minor variations, this should work whether you're serving up a file from the file system or dynamically generated.
With that said, the referenced MSDN article takes a rather simplistic view of the world, so you may want to read Successfully Stream a PDF to browser through HTTPS as well for some of the headers you may need to supply.
Using that approach, an iframe is probably the best way to go. Have one webform that streams the file, and then put the iframe on another page with its src
attribute set to the first form.
I'm not sure that Java has infinity for every numerical type but for some numerical data types the answer is positive:
Float.POSITIVE_INFINITY
Float.NEGATIVE_INFINITY
or
Double.POSITIVE_INFINITY
Double.NEGATIVE_INFINITY
Also you may find useful the following article which represents some mathematical operations involving +/- infinity: Java Floating-Point Number Intricacies.
I prefer the first version to start a java application just because it has less pitfalls ("welcome to classpath hell"). The second one requires an executable jar file and the classpath for that application has to be defined inside the jar's manifest (all other classpath declaration will be silently ignored...). So with the second version you'd have to look into the jar, read the manifest and try to find out if the classpath entries are valid from where the jar is stored... That's avoidable.
I don't expect any performance advantages or disadvantages for either version. It's just telling the jvm which class to use for the main thread and where it can find the libraries.
Using the so called f strings:
answer = True
myvar = f"the answer is {answer}"
Then if I do
print(myvar)
I will get:
the answer is True
I like f strings because one does not have to worry about the order in which the variables will appear in the printed text, which helps in case one has multiple variables to be printed as strings.
Using HTTP Request verb such as GET, POST, DELETE, PUT etc... enables you to build RESTful web applications. Read about it here: http://en.wikipedia.org/wiki/Representational_state_transfer
The easiest way to see benefits from this is to look at this example.
Every MVC framework has a Router/Dispatcher
that maps URL-s to actionControllers.
So URL like this: /blog/article/1
would invoke blogController::articleAction($id);
Now this Router is only aware of the URL or /blog/article/1/
But if that Router would be aware of whole HTTP Request object instead of just URL, he could have access HTTP Request verb (GET, POST, PUT, DELETE...), and many other useful stuff about current HTTP Request.
That would enable you to configure application so it can accept the same URL and map it to different actionControllers depending on the HTTP Request verb.
For example:
if you want to retrive article 1 you can do this:
GET /blog/article/1 HTTP/1.1
but if you want to delete article 1 you will do this:
DELETE /blog/article/1 HTTP/1.1
Notice that both HTTP Requests have the same URI, /blog/article/1, the only difference is the HTTP Request verb. And based on that verb your router can call different actionController. This enables you to build neat URL-s.
Read this two articles, they might help you:
These articles are about Symfony 2 framework, but they can help you to figure out how does HTTP Requests and Responses work.
Hope this helps!
is there a way to disable it?
Yes, you only need to use the JSON_UNESCAPED_SLASHES
flag.
!important read before: https://stackoverflow.com/a/10210367/367456 (know what you're dealing with - know your enemy)
json_encode($str, JSON_UNESCAPED_SLASHES);
If you don't have PHP 5.4 at hand, pick one of the many existing functions and modify them to your needs, e.g. http://snippets.dzone.com/posts/show/7487 (archived copy).
<?php
/*
* Escaping the reverse-solidus character ("/", slash) is optional in JSON.
*
* This can be controlled with the JSON_UNESCAPED_SLASHES flag constant in PHP.
*
* @link http://stackoverflow.com/a/10210433/367456
*/
$url = 'http://www.example.com/';
echo json_encode($url), "\n";
echo json_encode($url, JSON_UNESCAPED_SLASHES), "\n";
Example Output:
"http:\/\/www.example.com\/"
"http://www.example.com/"
There is an overload of Split that takes strings.
"THExxQUICKxxBROWNxxFOX".Split(new [] { "xx" }, StringSplitOptions.None);
You can use either of these StringSplitOptions
So if the string is "THExxQUICKxxxxBROWNxxFOX", StringSplitOptions.None
will return an empty entry in the array for the "xxxx" part while StringSplitOptions.RemoveEmptyEntries
will not.
try like this
= IIF( MAX( iif( IsNothing(Fields!.Reading.Value ), -1, Fields!.Reading.Value ) ) = -1, "", FormatNumber( MAX( iif( IsNothing(Fields!.Reading.Value ), -1, Fields!.Reading.Value ), "CellReading_Reading"),3)) )
Coming from Linux background. I would prefer using something similar to grep, therefore I use Select-String. So even if someone is not sure of the complete module name. They can provide the initials and determine whether the module exists or not.
Get-Module -ListAvailable -All | Select-String Module_Name
(can be a part of the module name)
if it's not a foreign key field, not using empty strings could save you some trouble. only allow nulls if you'll take null to mean something different than an empty string. for example if you have a password field, a null value could indicate that a new user has not created his password yet while an empty varchar could indicate a blank password. for a field like "address2" allowing nulls can only make life difficult. things to watch out for include null references and unexpected results of = and <> operators mentioned by Vagif Verdi, and watching out for these things is often unnecessary programmer overhead.
edit: if performance is an issue see this related question: Nullable vs. non-null varchar data types - which is faster for queries?