This may be what you are looking for:
body>div {_x000D_
background: #aaa;_x000D_
display: flex;_x000D_
flex-wrap: wrap;_x000D_
}_x000D_
_x000D_
body>div>div {_x000D_
flex-grow: 1;_x000D_
width: 33%;_x000D_
height: 100px;_x000D_
}_x000D_
_x000D_
body>div>div:nth-child(even) {_x000D_
background: #23a;_x000D_
}_x000D_
_x000D_
body>div>div:nth-child(odd) {_x000D_
background: #49b;_x000D_
}
_x000D_
<div>_x000D_
<div></div>_x000D_
<div></div>_x000D_
<div></div>_x000D_
<div></div>_x000D_
<div></div>_x000D_
<div></div>_x000D_
</div>
_x000D_
Use the system
function.
system("myfile.sh"); // myfile.sh should be chmod +x
Here you are trying to execute IQueryable object on inactive DBContext. your DBcontext is already disposed of. you can only execute IQueryable object before DBContext is disposed of. Means you need to write users.Select(x => x.ToInfo()).ToList()
statement inside using scope
No, it is not valid but you can trick your inner form position on the HTML
with a help of CSS
and jQuery
usage. First create some container div inside your parent form and then in any other place on the page the div with your child (inner) form:
<form action="a">
<input.../>
<div class="row" id="other_form_container"></div>
<input.../>
</form>
....
<div class="row" id="other_form">
<form action="b">
<input.../>
<input.../>
<input.../>
</form>
</div>
Give your container div some stable heaght
<style>
#other_form_container {
height:90px;
position:relative;
}
</style>
Thank trick the "other_form" position relatively to container div.
<script>
$(document).ready(function() {
var pos = $("#other_form_container").position();
$("#other_form").css({
position: "absolute",
top: pos.top - 40,
left: pos.left + 7,
width: 500,
}).show();
});
</script>
P.S.: You'll have to play with numbers to make it look nice.
If you happen to already have a diff tool associated with filetypes (say, because you installed TortoiseSVN which comes with a diff viewer) you could just pipe the regular git diff
output to a "temp" file, then just open that file directly without needing to know anything about the viewer:
git diff > "~/temp.diff" && start "~/temp.diff"
Setting it as a global alias works even better: git what
[alias]
what = "!f() { git diff > "~/temp.diff" && start "~/temp.diff"; }; f"
When you get the width and height of a resized image Get width of a resized image after UIViewContentModeScaleAspectFit, you can resize your imageView:
imageView.frame = CGRectMake(0, 0, resizedWidth, resizedHeight);
imageView.center = imageView.superview.center;
I haven't checked if it works, but I think all should be OK
You can bind the DropDownList in different ways by using List, Dictionary, Enum, DataSet DataTable
.
Main you have to consider three thing while binding the datasource of a dropdown.
you can use following code to bind a dropdownlist to a datasource as a datatable
:
SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["ConnString"].ConnectionString);
SqlCommand cmd = new SqlCommand("Select * from tblQuiz", con);
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataTable dt=new DataTable();
da.Fill(dt);
DropDownList1.DataTextField = "QUIZ_Name";
DropDownList1.DataValueField = "QUIZ_ID"
DropDownList1.DataSource = dt;
DropDownList1.DataBind();
if you want to process on selection of dropdownlist, then you have to change AutoPostBack="true"
you can use SelectedIndexChanged
event to write your code.
protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{
string strQUIZ_ID=DropDownList1.SelectedValue;
string strQUIZ_Name=DropDownList1.SelectedItem.Text;
// Your code..............
}
The scaling on your example figure is a bit strange but you can force it by plotting the index of each x-value and then setting the ticks to the data points:
import matplotlib.pyplot as plt
x = [0.00001,0.001,0.01,0.1,0.5,1,5]
# create an index for each tick position
xi = list(range(len(x)))
y = [0.945,0.885,0.893,0.9,0.996,1.25,1.19]
plt.ylim(0.8,1.4)
# plot the index for the x-values
plt.plot(xi, y, marker='o', linestyle='--', color='r', label='Square')
plt.xlabel('x')
plt.ylabel('y')
plt.xticks(xi, x)
plt.title('compare')
plt.legend()
plt.show()
I you are using Django then you can consider django-tastypie as an alternative to django-piston. It is easier to tune to non-ORM data sources than piston, and has great documentation.
text = "test"
def unpack(args):
return args[0](*args[1:])
def harvester(text, case):
X = case[0]
text+ str(X)
if __name__ == '__main__':
pool = multiprocessing.Pool(processes=6)
case = RAW_DATASET
# args is a list of tuples
# with the function to execute as the first item in each tuple
args = [(harvester, text, c) for c in case]
# doing it this way, we can pass any function
# and we don't need to define a wrapper for each different function
# if we need to use more than one
pool.map(unpack, args)
pool.close()
pool.join()
usually i don't use for loop in R, but here is my solution using for loops and two packages : plyr and dostats
plyr is on cran and you can download dostats on https://github.com/halpo/dostats (may be using install_github from Hadley devtools package)
Assuming that i have your first two data.frame (Df.1 and Df.2) in csv files, you can do something like this.
require(plyr)
require(dostats)
files <- list.files(pattern = ".csv")
for (i in seq_along(files)) {
assign(paste("Df", i, sep = "."), read.csv(files[i]))
assign(paste(paste("Df", i, sep = ""), "summary", sep = "."),
ldply(get(paste("Df", i, sep = ".")), dostats, sum, min, mean, median, max))
}
Here is the output
R> Df1.summary
.id sum min mean median max
1 A 34 4 5.6667 5.5 8
2 B 22 1 3.6667 3.0 9
R> Df2.summary
.id sum min mean median max
1 A 21 1 3.5000 3.5 6
2 B 16 1 2.6667 2.5 5
Maybe this can help: Advanced Python Scheduler
Here's a small piece of code from their documentation:
from apscheduler.schedulers.blocking import BlockingScheduler
def some_job():
print "Decorated job"
scheduler = BlockingScheduler()
scheduler.add_job(some_job, 'interval', hours=1)
scheduler.start()
In my case, I achieved this with:
ALTER SEQUENCE table_tabl_id_seq RESTART WITH 6;
Where my table is named table
i have used it in this way and its working fine
quantity=prompt("Please enter the quantity","1");
quantity=parseInt(quantity);
if (!isNaN( quantity ))
{
totalAmount=itemPrice*quantity;
}
return totalAmount;
Ravi's comment is essentially the answer. Functions take their own arguments. If you want them to be the same as the command-line arguments, you must pass them in. Otherwise, you're clearly calling a function without arguments.
That said, you could if you like store the command-line arguments in a global array to use within other functions:
my_function() {
echo "stored arguments:"
for arg in "${commandline_args[@]}"; do
echo " $arg"
done
}
commandline_args=("$@")
my_function
You have to access the command-line arguments through the commandline_args
variable, not $@
, $1
, $2
, etc., but they're available. I'm unaware of any way to assign directly to the argument array, but if someone knows one, please enlighten me!
Also, note the way I've used and quoted $@
- this is how you ensure special characters (whitespace) don't get mucked up.
The three constants have similar functions nowadays, but different historical origins, and very occasionally you may be required to use one or the other.
You need to think back to the days of old manual typewriters to get the origins of this. There are two distinct actions needed to start a new line of text:
In computers, these two actions are represented by two different characters - carriage return is CR
, ASCII character 13, vbCr
; line feed is LF
, ASCII character 10, vbLf
. In the old days of teletypes and line printers, the printer needed to be sent these two characters -- traditionally in the sequence CRLF
-- to start a new line, and so the CRLF
combination -- vbCrLf
-- became a traditional line ending sequence, in some computing environments.
The problem was, of course, that it made just as much sense to only use one character to mark the line ending, and have the terminal or printer perform both the carriage return and line feed actions automatically. And so before you knew it, we had 3 different valid line endings: LF
alone (used in Unix and Macintoshes), CR
alone (apparently used in older Mac OSes) and the CRLF
combination (used in DOS, and hence in Windows). This in turn led to the complications of DOS / Windows programs having the option of opening files in text mode
, where any CRLF
pair read from the file was converted to a single CR
(and vice versa when writing).
So - to cut a (much too) long story short - there are historical reasons for the existence of the three separate line separators, which are now often irrelevant: and perhaps the best course of action in .NET is to use Environment.NewLine
which means someone else has decided for you which to use, and future portability issues should be reduced.
select 1
would work in sql server, not sure about the others.
Use standard ansi sql to create a table and then query from that table.
At the risk of sounding obvious, always check the spelling of your forward class files. Sometimes XCode (at least XCode 4.3.2) will turn a declaration green that's actually camel cased incorrectly. Like in this example:
"_OBJC_CLASS_$_RadioKit", referenced from:
objc-class-ref in RadioPlayerViewController.o
If RadioKit was a class file and you make it a property of another file, in the interface declaration, you might see that
Radiokit *rk;
has "Radiokit" in green when the actual decalaration should be:
RadioKit *rk;
This error will also throw this type of error. Another example (in my case), is when you have _iPhone and _iphone extensions on your class names for universal apps. Once I changed the appropriate file from _iphone to the correct _iPhone, the errors went away.
See the mysql manual, Unicode Character Sets section:
For any Unicode character set, operations performed using the _general_ci collation are faster than those for the _unicode_ci collation. For example, comparisons for the utf8_general_ci collation are faster, but slightly less correct, than comparisons for utf8_unicode_ci. The reason for this is that utf8_unicode_ci supports mappings such as expansions; that is, when one character compares as equal to combinations of other characters. For example, in German and some other languages “ß” is equal to “ss”. utf8_unicode_ci also supports contractions and ignorable characters. utf8_general_ci is a legacy collation that does not support expansions, contractions, or ignorable characters. It can make only one-to-one comparisons between characters.
So to summarize, utf_general_ci uses a smaller and less correct (according to the standard) set of comparisons than utf_unicode_ci which should implement the entire standard. The general_ci set will be faster because there is less computation to do.
how can i return a array in a c++ method and how must i declare it? int[] test(void); ??
This sounds like a simple question, but in C++ you have quite a few options. Firstly, you should prefer...
std::vector<>
, which grows dynamically to however many elements you encounter at runtime, or
std::array<>
(introduced with C++11), which always stores a number of elements specified at compile time,
...as they manage memory for you, ensuring correct behaviour and simplifying things considerably:
std::vector<int> fn()
{
std::vector<int> x;
x.push_back(10);
return x;
}
std::array<int, 2> fn2() // C++11
{
return {3, 4};
}
void caller()
{
std::vector<int> a = fn();
const std::vector<int>& b = fn(); // extend lifetime but read-only
// b valid until scope exit/return
std::array<int, 2> c = fn2();
const std::array<int, 2>& d = fn2();
}
The practice of creating a const
reference to the returned data can sometimes avoid a copy, but normally you can just rely on Return Value Optimisation, or - for vector
but not array
- move semantics (introduced with C++11).
If you really want to use an inbuilt array (as distinct from the Standard library class called array
mentioned above), one way is for the caller to reserve space and tell the function to use it:
void fn(int x[], int n)
{
for (int i = 0; i < n; ++i)
x[i] = n;
}
void caller()
{
// local space on the stack - destroyed when caller() returns
int x[10];
fn(x, sizeof x / sizeof x[0]);
// or, use the heap, lives until delete[](p) called...
int* p = new int[10];
fn(p, 10);
}
Another option is to wrap the array in a structure, which - unlike raw arrays - are legal to return by value from a function:
struct X
{
int x[10];
};
X fn()
{
X x;
x.x[0] = 10;
// ...
return x;
}
void caller()
{
X x = fn();
}
Starting with the above, if you're stuck using C++03 you might want to generalise it into something closer to the C++11 std::array
:
template <typename T, size_t N>
struct array
{
T& operator[](size_t n) { return x[n]; }
const T& operator[](size_t n) const { return x[n]; }
size_t size() const { return N; }
// iterators, constructors etc....
private:
T x[N];
};
Another option is to have the called function allocate memory on the heap:
int* fn()
{
int* p = new int[2];
p[0] = 0;
p[1] = 1;
return p;
}
void caller()
{
int* p = fn();
// use p...
delete[] p;
}
To help simplify the management of heap objects, many C++ programmers use "smart pointers" that ensure deletion when the pointer(s) to the object leave their scopes. With C++11:
std::shared_ptr<int> p(new int[2], [](int* p) { delete[] p; } );
std::unique_ptr<int[]> p(new int[3]);
If you're stuck on C++03, the best option is to see if the boost library is available on your machine: it provides boost::shared_array
.
Yet another option is to have some static memory reserved by fn()
, though this is NOT THREAD SAFE, and means each call to fn()
overwrites the data seen by anyone keeping pointers from previous calls. That said, it can be convenient (and fast) for simple single-threaded code.
int* fn(int n)
{
static int x[2]; // clobbered by each call to fn()
x[0] = n;
x[1] = n + 1;
return x; // every call to fn() returns a pointer to the same static x memory
}
void caller()
{
int* p = fn(3);
// use p, hoping no other thread calls fn() meanwhile and clobbers the values...
// no clean up necessary...
}
here is kooilnc's answer w/ padded 0's
function getFormattedDate() {
var date = new Date();
var month = date.getMonth() + 1;
var day = date.getDate();
var hour = date.getHours();
var min = date.getMinutes();
var sec = date.getSeconds();
month = (month < 10 ? "0" : "") + month;
day = (day < 10 ? "0" : "") + day;
hour = (hour < 10 ? "0" : "") + hour;
min = (min < 10 ? "0" : "") + min;
sec = (sec < 10 ? "0" : "") + sec;
var str = date.getFullYear() + "-" + month + "-" + day + "_" + hour + ":" + min + ":" + sec;
/*alert(str);*/
return str;
}
Example: index = False
import pandas as pd
writer = pd.ExcelWriter("dataframe.xlsx", engine='xlsxwriter')
dataframe.to_excel(writer,sheet_name = dataframe, index=False)
writer.save()
If you want to do it via javascript rather than CSS you can use:
var link = document.getElementById('nav-ask');
link.style.display = 'none'; //or
link.style.visibility = 'hidden';
depending on what you want to do.
Just use this:
List<SomeBean> newList = new ArrayList<SomeBean>(otherList);
Note: still not thread safe, if you modify otherList
from another thread, then you may want to make that otherList
(and even newList
) a CopyOnWriteArrayList
, for instance -- or use a lock primitive, such as ReentrantReadWriteLock to serialize read/write access to whatever lists are concurrently accessed.
In Oracle, you could do this:
create table D (
ID numeric(1),
CODE varchar(2),
constraint PK_D primary key (ID, CODE)
);
In response to the bug filed here: http://developers.facebook.com/bugs/167188686695750 a Facebook engineer replied:
This is by design, searching for users is intended to be a user to user function only, for use in finding new friends or searching by email to find existing contacts on Facebook. The "scraping" mentioned on StackOverflow is specifically against our Terms of Service https://www.facebook.com/terms.php and in fact the only legitimate way to search for users on Facebook is when you are a user.
The function adds an escape character, the backslash, \, before certain potentially dangerous characters in a string passed in to the function. The characters escaped are
\x00, \n, \r, \, ', " and \x1a.
This can help prevent SQL injection attacks which are often performed by using the ' character to append malicious code to an SQL query.
This will tell according to the location if the program exist or not:
if [ -x /usr/bin/yum ]; then
echo "This is Centos"
fi
set the wrapper to height 100%
.vwrapper {
display: flex;
flex-direction: column;
flex-wrap: nowrap;
justify-content: flex-start;
align-items: stretch;
align-content: stretch;
height: 100%;
}
and set the 3rd row to flex-grow
#row3 {
background-color: green;
flex: 1 1 auto;
display: flex;
}
Additional details to the previous answer:
While React's setState
is asynchronous (both classes and hooks), and it's tempting to use that fact to explain the observed behavior, it is not the reason why it happens.
TLDR: The reason is a closure scope around an immutable const
value.
read the value in render function (not inside nested functions):
useEffect(() => { setMovies(result) }, [])
console.log(movies)
add the variable into dependencies (and use the react-hooks/exhaustive-deps eslint rule):
useEffect(() => { setMovies(result) }, [])
useEffect(() => { console.log(movies) }, [movies])
use a mutable reference (when the above is not possible):
const moviesRef = useRef(initialValue)
useEffect(() => {
moviesRef.current = result
console.log(moviesRef.current)
}, [])
If async was the only reason, it would be possible to await setState()
.
However, both props
and state
are assumed to be unchanging during 1 render.
Treat
this.state
as if it were immutable.
With hooks, this assumption is enhanced by using constant values with the const
keyword:
const [state, setState] = useState('initial')
The value might be different between 2 renders, but remains a constant inside the render itself and inside any closures (functions that live longer even after render is finished, e.g. useEffect
, event handlers, inside any Promise or setTimeout).
Consider following fake, but synchronous, React-like implementation:
// sync implementation:
let internalState
let renderAgain
const setState = (updateFn) => {
internalState = updateFn(internalState)
renderAgain()
}
const useState = (defaultState) => {
if (!internalState) {
internalState = defaultState
}
return [internalState, setState]
}
const render = (component, node) => {
const {html, handleClick} = component()
node.innerHTML = html
renderAgain = () => render(component, node)
return handleClick
}
// test:
const MyComponent = () => {
const [x, setX] = useState(1)
console.log('in render:', x) // ?
const handleClick = () => {
setX(current => current + 1)
console.log('in handler/effect/Promise/setTimeout:', x) // ? NOT updated
}
return {
html: `<button>${x}</button>`,
handleClick
}
}
const triggerClick = render(MyComponent, document.getElementById('root'))
triggerClick()
triggerClick()
triggerClick()
_x000D_
<div id="root"></div>
_x000D_
Okay so little bit of digging and I found these gems from Bill Philips article on RecycleView
RecyclerView can do more than ListView, but the RecyclerView class itself has fewer responsibilities than ListView. Out of the box, RecyclerView does not:
- Position items on the screen
- Animate views
- Handle any touch events apart from scrolling
All of this stuff was baked in to ListView, but RecyclerView uses collaborator classes to do these jobs instead.
The ViewHolders you create are beefier, too. They subclass
RecyclerView.ViewHolder
, which has a bunch of methodsRecyclerView
uses.ViewHolders
know which position they are currently bound to, as well as which item ids (if you have those). In the process,ViewHolder
has been knighted. It used to be ListView’s job to hold on to the whole item view, andViewHolder
only held on to little pieces of it.Now, ViewHolder holds on to all of it in the
ViewHolder.itemView
field, which is assigned in ViewHolder’s constructor for you.
// Use this version to capture the full extended desktop (i.e. multiple screens)
Bitmap screenshot = new Bitmap(SystemInformation.VirtualScreen.Width,
SystemInformation.VirtualScreen.Height,
PixelFormat.Format32bppArgb);
Graphics screenGraph = Graphics.FromImage(screenshot);
screenGraph.CopyFromScreen(SystemInformation.VirtualScreen.X,
SystemInformation.VirtualScreen.Y,
0,
0,
SystemInformation.VirtualScreen.Size,
CopyPixelOperation.SourceCopy);
screenshot.Save("Screenshot.png", System.Drawing.Imaging.ImageFormat.Png);
TLDR for people comming from c++
It's just overloaded operator of ( )
parentheses
So in scala:
class X {
def apply(param1: Int, param2: Int, param3: Int) : Int = {
// Do something
}
}
Is same as this in c++:
class X {
int operator()(int param1, int param2, int param3) {
// do something
}
};
Your syntax is wrong... The correct coding is:
<?php
mysql_connect("localhost","root","");
mysql_select_db("form1");
$query = mysql_query("SELECT * FROM users WHERE name = 'Admin' ");
while($rows = mysql_fetch_array($query))
{
$rows = $rows['Name'];
$address = $rows['Address'];
$email = $rows['Email'];
$subject = $rows['Subject'];
$comment = $rows['Comment']
echo $rows.'</br>'.$address.'</br>'.$email.'</br>'.$subject.'</br>'.$comment;
}
?>
Beside sys.argv
, also take a look at the argparse module, which helps define options and arguments for scripts.
The argparse module makes it easy to write user-friendly command-line interfaces.
SET JAVA_HOME=C:\Applications\java\java_8
SET PATH=%PATH%;C:\Applications\java\java_8\bin
SET JAVA_OPTIONS=-d64 -Xms128g -Xmx128g
The Numerical Recipes website (http://www.nr.com/) has an FFT if you don't mind typing it in. I am working on a project converting a Labview program to C# 2008, .NET 3.5 to acquire data and then look at the frequency spectrum. Unfortunately the Math.Net uses the latest .NET framework, so I couldn't use that FFT. I tried the Exocortex one - it worked but the results to match the Labview results and I don't know enough FFT theory to know what is causing the problem. So I tried the FFT on the numerical recipes website and it worked! I was also able to program the Labview low sidelobe window (and had to introduce a scaling factor).
You can read the chapter of the Numerical Recipes book as a guest on thier site, but the book is so useful that I highly recomend purchasing it. Even if you do end up using the Math.NET FFT.
The characters you are reading on your screen now each have a numerical value. In the ASCII format, for example, the letter 'A' is 65, 'B' is 66, and so on. If you look at a table of characters available in ASCII you will see that it isn't much use for someone who wishes to write something in Mandarin, Arabic, or Japanese. For characters / words from those languages to be displayed we needed another system of encoding them to and from numbers stored in computer memory.
UTF-8 is just one of the encoding methods that were invented to implement this requirement. It lets you write text in all kinds of languages, so French accents will appear perfectly fine, as will text like this
???? ????? (Bzia zbasa), ???????, Ç'kemi, ???, and even right-to-left writing such as this ?????? ?????
If you copy and paste the above text into notepad and then try to save the file as ANSI (another format) you will receive a warning that saving in this format will lose some of the formatting. Accept it, then re-load the text file and you'll see something like this
???? ????? (Bzia zbasa), ???????, Ç'kemi, ???, and even right-to-left writing such as this ?????? ?????
You need to add this in your build.gradle:
dependencies {
...
compile 'com.android.support:cardview-v7:+'
}
And then Sync Project with Gradle Files
. Finally, you can use CardView as it's described here.
Google has recently changed stopped allowing localhost being allowed by default. (as touched upon by @Artur Cesar De Melo)This is under their FAQ's:
I'm getting an error "Localhost is not in the list of supported domains". This was working before, what should I do?
localhost domains are no longer supported by default. If you wish to continue supporting them for development you can add them to the list of supported domains for your site key. Go to the admin console to update your list of supported domains. We advise to use a separate key for development and production and to not allow localhost on your production site key.
1: Create a separate key for your development environment
2: Add 127.0.0.1 to the list of allowed domains
3: Save changes and allow up to 30 mins for changes to take affect
Input doesn't support multiple lines. You need to use a textarea to achieve that feature.
<textarea name="Text1"></textarea>
Remeber that the
<textarea>
have the value inside the tag, not in attribute:
<textarea>INITIAL VALUE GOES HERE</textarea>
It cannot be self closed as:
<textarea/>
For more information, take a look to this.
I tried a few options, which were incredibly slow. This split a 360GB dump into its tables in a few minutes:
How do I split the output from mysqldump into smaller files?
You don't want to list all 1000 object in your bucket at a time. A more robust solution will be to fetch a max of 10 objects at a time. You can do this with the withMaxKeys method.
The following code creates an S3 client, fetches 10 or less objects at a time and filters based on a prefix and generates a pre-signed url for the fetched object:
import com.amazonaws.HttpMethod;
import com.amazonaws.SdkClientException;
import com.amazonaws.auth.AWSStaticCredentialsProvider;
import com.amazonaws.auth.BasicAWSCredentials;
import com.amazonaws.regions.Regions;
import com.amazonaws.services.s3.AmazonS3;
import com.amazonaws.services.s3.AmazonS3ClientBuilder;
import com.amazonaws.services.s3.model.*;
import java.net.URL;
import java.util.Date;
/**
* @author shabab
* @since 21 Sep, 2020
*/
public class AwsMain {
static final String ACCESS_KEY = "";
static final String SECRET = "";
static final Regions BUCKET_REGION = Regions.DEFAULT_REGION;
static final String BUCKET_NAME = "";
public static void main(String[] args) {
BasicAWSCredentials awsCreds = new BasicAWSCredentials(ACCESS_KEY, SECRET);
try {
final AmazonS3 s3Client = AmazonS3ClientBuilder
.standard()
.withRegion(BUCKET_REGION)
.withCredentials(new AWSStaticCredentialsProvider(awsCreds))
.build();
ListObjectsV2Request req = new ListObjectsV2Request().withBucketName(BUCKET_NAME).withMaxKeys(10);
ListObjectsV2Result result;
do {
result = s3Client.listObjectsV2(req);
result.getObjectSummaries()
.stream()
.filter(s3ObjectSummary -> {
return s3ObjectSummary.getKey().contains("Market-subscriptions/")
&& !s3ObjectSummary.getKey().equals("Market-subscriptions/");
})
.forEach(s3ObjectSummary -> {
GeneratePresignedUrlRequest generatePresignedUrlRequest =
new GeneratePresignedUrlRequest(BUCKET_NAME, s3ObjectSummary.getKey())
.withMethod(HttpMethod.GET)
.withExpiration(getExpirationDate());
URL url = s3Client.generatePresignedUrl(generatePresignedUrlRequest);
System.out.println(s3ObjectSummary.getKey() + " Pre-Signed URL: " + url.toString());
});
String token = result.getNextContinuationToken();
req.setContinuationToken(token);
} while (result.isTruncated());
} catch (SdkClientException e) {
e.printStackTrace();
}
}
private static Date getExpirationDate() {
Date expiration = new java.util.Date();
long expTimeMillis = expiration.getTime();
expTimeMillis += 1000 * 60 * 60;
expiration.setTime(expTimeMillis);
return expiration;
}
}
jars use zip compression so you can use any unzip utility.
Example:
$ unzip myJar.jar -d ./directoryToExtractTo
Put it inside your <footer>
by all means, but the most fitting element is the small element.
The HTML5 spec for this says:
Small print typically features disclaimers, caveats, legal restrictions, or copyrights. Small print is also sometimes used for attribution, or for satisfying licensing requirements.
I've just run into this issue and it was because I had updated a view in my DB and not refreshed the schema in my mapping.
document.addEventListener('dblclick', (event) => {
event.preventDefault()
}, { passive: false });
Better solution, as str.split("\n") function creates new array of strings split by "\n" which is heavier than str.match(/\n\g). str.match(/\n\g) creates array of matching elements only. Which is "\n" in our case.
var totalLines = (str.match(/\n/g) || '').length + 1;
If you want to get rid of the extra xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
and xmlns:xsd="http://www.w3.org/2001/XMLSchema"
, but still keep your own namespace xmlns="http://schemas.YourCompany.com/YourSchema/"
, you use the same code as above except for this simple change:
// Add lib namespace with empty prefix
ns.Add("", "http://schemas.YourCompany.com/YourSchema/");
Visual C++ Redistributable for Visual Studio 2015 (x32 bit version) - RC.
This should correct that. You can google for what the DLL is, but that's not important.
PS: It's officially from Microsoft too:)
Where I found it: Downloads (Visual Studio)
Others pointed out to use SQS and Step Functions. But both these solutions add additional cost. Step Function state transitions are supposedly very expensive.
AWS lambda offers some retry logic. Where it tries something for 3 times. I am not sure if that is still valid when you trigger it use the API.
<shameless-plug>
Search+ is a notepad++ plugin that does exactly this. You can download it from here and install it following the steps mentioned here
Feel free to post any issues/suggestions here.
</shameless-plug>
one of more possible solutions
dbver=$(sed -n 's/.*database_version *= *\([^ ]*.*\)/\1/p' < parameters.ini)
echo $dbver
All you have to do is In your bLoanButton_Click , add a line to rebind the Grid to the SqlDataSource :
protected void bLoanButton_Click(object sender, EventArgs e)
{
//your same code
........
GridView1.DataBind();
}
regards
I'm sure there are other ways to accomplish this, but one solution would be to use join
through the Query Builder.
If you have tables set up something like this:
users
id
...
friends
id
user_id
friend_id
...
votes, comments and status_updates (3 tables)
id
user_id
....
In your User model:
class User extends Eloquent {
public function friends()
{
return $this->hasMany('Friend');
}
}
In your Friend model:
class Friend extends Eloquent {
public function user()
{
return $this->belongsTo('User');
}
}
Then, to gather all the votes for the friends of the user with the id of 1, you could run this query:
$user = User::find(1);
$friends_votes = $user->friends()
->with('user') // bring along details of the friend
->join('votes', 'votes.user_id', '=', 'friends.friend_id')
->get(['votes.*']); // exclude extra details from friends table
Run the same join
for the comments
and status_updates
tables. If you would like votes, comments, and status_updates to be in one chronological list, you can merge the resulting three collections into one and then sort the merged collection.
Edit
To get votes, comments, and status updates in one query, you could build up each query and then union the results. Unfortunately, this doesn't seem to work if we use the Eloquent hasMany
relationship (see comments for this question for a discussion of that problem) so we have to modify to queries to use where
instead:
$friends_votes =
DB::table('friends')->where('friends.user_id','1')
->join('votes', 'votes.user_id', '=', 'friends.friend_id');
$friends_comments =
DB::table('friends')->where('friends.user_id','1')
->join('comments', 'comments.user_id', '=', 'friends.friend_id');
$friends_status_updates =
DB::table('status_updates')->where('status_updates.user_id','1')
->join('friends', 'status_updates.user_id', '=', 'friends.friend_id');
$friends_events =
$friends_votes
->union($friends_comments)
->union($friends_status_updates)
->get();
At this point, though, our query is getting a bit hairy, so a polymorphic relationship with and an extra table (like DefiniteIntegral suggests below) might be a better idea.
You are incorrectly using the super
and this
keyword. Here is an example of how they work:
class Animal {
public name: string;
constructor(name: string) {
this.name = name;
}
move(meters: number) {
console.log(this.name + " moved " + meters + "m.");
}
}
class Horse extends Animal {
move() {
console.log(super.name + " is Galloping...");
console.log(this.name + " is Galloping...");
super.move(45);
}
}
var tom: Animal = new Horse("Tommy the Palomino");
Animal.prototype.name = 'horseee';
tom.move(34);
// Outputs:
// horseee is Galloping...
// Tommy the Palomino is Galloping...
// Tommy the Palomino moved 45m.
Explanation:
super.name
, this refers to the prototype chain of the object tom
, not the object tom
self. Because we have added a name property on the Animal.prototype
, horseee will be outputted.this.name
, the this
keyword refers to the the tom object itself. move
method of the Animal base class. This method is called from Horse class move method with the syntax super.move(45);
. Using the super
keyword in this context will look for a move
method on the prototype chain which is found on the Animal prototype.Remember TS still uses prototypes under the hood and the class
and extends
keywords are just syntactic sugar over prototypical inheritance.
A little late here, but I've found this to be a common problem worth a custom directive to handle. Here's how that might look:
.directive('toggleOnHover', function(){
return {
restrict: 'A',
link: link
};
function link(scope, elem, attrs){
elem.on('mouseenter', applyToggleExp);
elem.on('mouseleave', applyToggleExp);
function applyToggleExp(){
scope.$apply(attrs.toggleOnHover);
}
}
});
You can use it like this:
<li toggle-on-hover="editableProp = !editableProp">edit</li>
If you are using Oracle, this code can help you:
select
TRUNC(sysdate, 'YEAR') Start_of_the_year,
TRUNC(sysdate, 'MONTH') Start_of_the_month,
TRUNC(sysdate, 'DAY') start_of_the_week,
TRUNC(sysdate+365, 'YEAR')-1 End_of_the_year,
TRUNC(sysdate+30, 'MONTH')-1 End_of_the_month,
TRUNC(sysdate+6, 'DAY')-1 end_of_the_week
from dual;
select
TRUNC(sysdate, 'YEAR') Start_of_the_year,
TRUNC(sysdate+365, 'YEAR')-1 End_of_the_year,
TRUNC(sysdate, 'MONTH') Start_of_the_month,
TRUNC(sysdate+30, 'MONTH')-1 End_of_the_month,
TRUNC(sysdate, 'DAY')+1 start_of_the_week, -- starting Monday
TRUNC(sysdate+6, 'DAY') end_of_the_week -- finish Sunday
from dual;
Basic and general difference is:
Fields
Properties
I solved it few days ago, after having the same problem with other global modules, by adding to:
Environment Tables -> System variables -> Path:
C:\Users\Administrator\AppData\Roaming\npm\node_modules\angular-cli\bin;C:\Program Files\MongoDB\Server\3.2\bin
Note that it must not have any spaces after ;
That turned out to be my problem.
Can't seem to edit the other answer. Has a minor error in that it is Windows-only. The more generic solution is to use os.sep as below:
sys.path might include items that aren't specifically in your PYTHONPATH environment variable. To query the variable directly, use:
import os
os.environ['PYTHONPATH'].split(os.pathsep)
PIL (Python Imaging Library) and Numpy work well together.
I use the following functions.
from PIL import Image
import numpy as np
def load_image( infilename ) :
img = Image.open( infilename )
img.load()
data = np.asarray( img, dtype="int32" )
return data
def save_image( npdata, outfilename ) :
img = Image.fromarray( np.asarray( np.clip(npdata,0,255), dtype="uint8"), "L" )
img.save( outfilename )
The 'Image.fromarray' is a little ugly because I clip incoming data to [0,255], convert to bytes, then create a grayscale image. I mostly work in gray.
An RGB image would be something like:
outimg = Image.fromarray( ycc_uint8, "RGB" )
outimg.save( "ycc.tif" )
Starting from C++23 you can use std::string::contains
#include <string>
const auto haystack = std::string("haystack with needles");
const auto needle = std::string("needle");
if (haystack.contains(needle))
{
// found!
}
An update, several years later
This answer is old, and R has moved on. Tweaking read.table
to run a bit faster has precious little benefit. Your options are:
Using vroom
from the tidyverse package vroom
for importing data from csv/tab-delimited files directly into an R tibble. See Hector's answer.
Using fread
in data.table
for importing data from csv/tab-delimited files directly into R. See mnel's answer.
Using read_table
in readr
(on CRAN from April 2015). This works much like fread
above. The readme in the link explains the difference between the two functions (readr
currently claims to be "1.5-2x slower" than data.table::fread
).
read.csv.raw
from iotools
provides a third option for quickly reading CSV files.
Trying to store as much data as you can in databases rather than flat files. (As well as being a better permanent storage medium, data is passed to and from R in a binary format, which is faster.) read.csv.sql
in the sqldf
package, as described in JD Long's answer, imports data into a temporary SQLite database and then reads it into R. See also: the RODBC
package, and the reverse depends section of the DBI
package page. MonetDB.R
gives you a data type that pretends to be a data frame but is really a MonetDB underneath, increasing performance. Import data with its monetdb.read.csv
function. dplyr
allows you to work directly with data stored in several types of database.
Storing data in binary formats can also be useful for improving performance. Use saveRDS
/readRDS
(see below), the h5
or rhdf5
packages for HDF5 format, or write_fst
/read_fst
from the fst
package.
The original answer
There are a couple of simple things to try, whether you use read.table or scan.
Set nrows
=the number of records in your data (nmax
in scan
).
Make sure that comment.char=""
to turn off interpretation of comments.
Explicitly define the classes of each column using colClasses
in read.table
.
Setting multi.line=FALSE
may also improve performance in scan.
If none of these thing work, then use one of the profiling packages to determine which lines are slowing things down. Perhaps you can write a cut down version of read.table
based on the results.
The other alternative is filtering your data before you read it into R.
Or, if the problem is that you have to read it in regularly, then use these methods to read the data in once, then save the data frame as a binary blob with save
saveRDS
, then next time you can retrieve it faster with load
readRDS
.
I like Andrew's suggestion, and in fact the CSS rule only needs to be:
:checked + label {
font-weight: bold;
}
I like to rely on implicit association of the label
and the input
element, so I'd do something like this:
<label>
<input type="checkbox"/>
<span>Bah</span>
</label>
with CSS:
:checked + span {
font-weight: bold;
}
Example: http://jsfiddle.net/wrumsby/vyP7c/
Expanding on user187291's post, you could also use getters/setters to get around having to use functions.
var x = 1;
var ref = {
get x() { return x; },
set x(v) { x = v; }
};
(ref.x)++;
console.log(x); // prints '2'
x--;
console.log(ref.x); // prints '1'
I had the same problem and spent about 6 hours to solve it. I didn't find that answer for exactly my situation so maybe it could be useful for somebody.
When I created project, I pointed GroupId in pom.xml as "myproject.myapp" but I didn't create first "prime" package with that name in the project, where would be other packages inside of this main package (like /src/main/app etc). When I created prime package "myproject.myapp" and moved other packages inside of it, the problem was solved.
'ShallowCopy' points to the same location in memory as 'Source' does. 'DeepCopy' points to a different location in memory, but the contents are the same.
Just to update Gabe Sechan's answer. If your manifest asks for permissions to READ_CALL_LOG and READ_PHONE_STATE, onReceive will called TWICE. One of which has EXTRA_INCOMING_NUMBER in it and the other doesn't. You have to test which has it and it can occur in any order.
You CAN use UTF-8 in the POST request, all you need is to specify the charset in your request.
You should use this request:
curl -X POST -H "Content-Type: application/x-www-form-urlencoded; charset=utf-8" --data-ascii "content=derinhält&date=asdf" http://myserverurl.com/api/v1/somemethod
void 0
mean?void
[MDN] is a prefix keyword that takes one argument and always returns undefined
.
Examples
void 0
void (0)
void "hello"
void (new Date())
//all will return undefined
It seems pretty useless, doesn't it? If it always returns undefined
, what's wrong with just using undefined
itself?
In a perfect world we would be able to safely just use undefined
: it's much simpler and easier to understand than void 0
. But in case you've never noticed before, this isn't a perfect world, especially when it comes to Javascript.
The problem with using undefined
was that undefined
is not a reserved word (it is actually a property of the global object [wtfjs]). That is, undefined
is a permissible variable name, so you could assign a new value to it at your own caprice.
alert(undefined); //alerts "undefined"
var undefined = "new value";
alert(undefined) // alerts "new value"
Note: This is no longer a problem in any environment that supports ECMAScript 5 or newer (i.e. in practice everywhere but IE 8), which defines the undefined
property of the global object as read-only (so it is only possible to shadow the variable in your own local scope). However, this information is still useful for backwards-compatibility purposes.
alert(window.hasOwnProperty('undefined')); // alerts "true"
alert(window.undefined); // alerts "undefined"
alert(undefined === window.undefined); // alerts "true"
var undefined = "new value";
alert(undefined); // alerts "new value"
alert(undefined === window.undefined); // alerts "false"
void
, on the other hand, cannot be overidden. void 0
will always return undefined
. undefined
, on the other hand, can be whatever Mr. Javascript decides he wants it to be.
void 0
, specifically?Why should we use void 0
? What's so special about 0
? Couldn't we just as easily use 1
, or 42
, or 1000000
or "Hello, world!"
?
And the answer is, yes, we could, and it would work just as well. The only benefit of passing in 0
instead of some other argument is that 0
is short and idiomatic.
Although undefined
can generally be trusted in modern JavaScript environments, there is one trivial advantage of void 0
: it's shorter. The difference is not enough to worry about when writing code but it can add up enough over large code bases that most code minifiers replace undefined
with void 0
to reduce the number of bytes sent to the browser.
A new take on this question would involve the use of Faker which you can install easily with pip
.
from faker import Factory
#----------------------------------------------------------------------
def create_values(fake):
""""""
print fake.boolean(chance_of_getting_true=50) # True
print fake.random_int(min=0, max=1) # 1
if __name__ == "__main__":
fake = Factory.create()
create_values(fake)
Once I'd discovered all the information of how my client was handling the encryption/decryption at their end it was straight forward using the AesManaged example suggested by dtb.
The finally implemented code started like this:
try
{
// Create a new instance of the AesManaged class. This generates a new key and initialization vector (IV).
AesManaged myAes = new AesManaged();
// Override the cipher mode, key and IV
myAes.Mode = CipherMode.ECB;
myAes.IV = new byte[16] { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; // CRB mode uses an empty IV
myAes.Key = CipherKey; // Byte array representing the key
myAes.Padding = PaddingMode.None;
// Create a encryption object to perform the stream transform.
ICryptoTransform encryptor = myAes.CreateEncryptor();
// TODO: perform the encryption / decryption as required...
}
catch (Exception ex)
{
// TODO: Log the error
throw ex;
}
This is a slightly improvised answer to ajsp answer using XML-RPC.
On the server-side when you convert the data, convert the numpy data to a string using the '.tostring()' method. This encodes the numpy ndarray as bytes string. On the client-side when you receive the data decode it using '.fromstring()' method. I wrote two simple functions for this. Hope this is helpful.
def ndarray2str(a):
# Convert the numpy array to string
a = a.tostring()
return a
On the receiver side, the data is received as a 'xmlrpc.client.Binary' object. You need to access the data using '.data'.
def str2ndarray(a):
# Specify your data type, mine is numpy float64 type, so I am specifying it as np.float64
a = np.fromstring(a.data, dtype=np.float64)
a = np.reshape(a, new_shape)
return a
Note: Only problem with this approach is that XML-RPC is very slow while sending large numpy arrays. It took me around 4 secs to send and receive a (10, 500, 500, 3) size numpy array for me.
I am using python 3.7.4.
<p>
<img style="float: right; margin: 0px 15px 15px 0px;" src="files/styles/large_hero_desktop_1x/public/headers/Kids%20on%20iPad%20 %202400x880.jpg?itok=PFa-MXyQ" width="100" />
Nunc pulvinar lacus id purus ultrices id sagittis neque convallis. Nunc vel libero orci.
<br style="clear: both;" />
</p>
$unixtime = strtotime($test);
echo date('m', $unixtime); //month
echo date('d', $unixtime);
echo date('y', $unixtime );
(SELECT C.I_WORKDATE
FROM T_COMPENSATION C
WHERE C.I_COMPENSATEDDATE = A.I_REQDATE AND ROWNUM <= 1
AND C.I_EMPID = A.I_EMPID)
curl
without any options will perform a GET request. It will simply return the data from the URI specified. Not retrieve the file itself to your local machine.
When you do,
$ curl https://www.python.org/static/apple-touch-icon-144x144-precomposed.png
You will receive binary data:
|?>?$! <R?HP@T*?Pm?Z??jU???ZP+UAUQ@?
??{X\? K???>0c?yF[i?}4?!?V¸?H_?)nO#?;I??vg^_ ??-Hm$$N0.
???%Y[?L?U3?_^9??P?T?0'u8?l?4 ...
In order to save this, you can use:
$ curl https://www.python.org/static/apple-touch-icon-144x144-precomposed.png > image.png
to store that raw image data inside of a file.
An easier way though, is just to use wget
.
$ wget https://www.python.org/static/apple-touch-icon-144x144-precomposed.png
$ ls
.
..
apple-touch-icon-144x144-precomposed.png
If you want to get the real path of java web application such as Spring (Servlet), you can get it from Servlet Context object that comes with your HttpServletRequest.
@GetMapping("/")
public String index(ModelMap m, HttpServletRequest request) {
String realPath = request.getServletContext().getRealPath("/");
System.out.println(realPath);
return "index";
}
Just drop the option v
.
-v
is for verbose. If you don't use it then it won't display:
tar -zxf tmp.tar.gz -C ~/tmp1
Was thinking about this today. This is all I ended up doing for a java project:
egrep -rl ' $' --include *.java * | xargs sed -i 's/\s\+$//g'
//refresh all iframes on page
var f_list = document.getElementsByTagName('iframe');
for (var i = 0, f; f = f_list[i]; i++) {
f.src = f.src;
}
Short answer: You can't. rm
removes files blindly, with no concept of 'trash'.
Some Unix and Linux systems try to limit its destructive ability by aliasing it to rm -i
by default, but not all do.
Long answer: Depending on your filesystem, disk activity, and how long ago the deletion occured, you may be able to recover some or all of what you deleted. If you're using an EXT3 or EXT4 formatted drive, you can check out extundelete
.
In the future, use rm
with caution. Either create a del
alias that provides interactivity, or use a file manager.
I also had deleted some values from my development database, but I had the same copy in QA database, so I did a generate script and selected option "type of data to script" to "data only" and selected my table.
Then I got the insert statements with same data, and then I run the script on my development database.
If you're using tcsh
(which is my default shell on Mac OS X), you probably just need to type rehash
into the shell just after the install completes:
npm install -g gulp
followed immediately by:
rehash
Otherwise, if this is your very first time installing gulp
, your shell may not recognize that there's a new executable installed -- so you either need to start a new shell, or type rehash
in the current shell.
(This is basically a one-time thing for each command you install globally.)
There is an operator missing, likely a *
:
-3.7 need_something_here (prof[x])
The "is not callable" occurs because the parenthesis -- and lack of operator which would have switched the parenthesis into precedence operators -- make Python try to call the result of -3.7
(a float) as a function, which is not allowed.
The parenthesis are also not needed in this case, the following may be sufficient/correct:
-3.7 * prof[x]
As Legolas points out, there are other things which may need to be addressed:
2.25 * (1 - math.pow(math.e, (-3.7(prof[x])/2.25))) * (math.e, (0/2.25)))
^-- op missing
extra parenthesis --^
valid but questionable float*tuple --^
expression yields 0.0 always --^
There are two ways to go about doing this.
Create a state in the constructor that contains the text input. Attach an onChange event to the input box that updates state each time. Then onClick you could just alert the state object.
handleClick: function() { alert(this.refs.myInput.value); },
Note the plural in this method:
document.getElementsByName()
That returns an array of elements, so use [0] to get the first occurence, e.g.
document.getElementsByName()[0]
REPEAT
...
UNTIL cond
Is equivalent to
while True:
...
if cond:
break
The SmtpClient can be used by code:
SmtpClient mailer = new SmtpClient();
mailer.Host = "mail.youroutgoingsmtpserver.com";
mailer.Credentials = new System.Net.NetworkCredential("yourusername", "yourpassword");
ViewTreeObserver
and onWindowFocusChanged()
are not so necessary at all.
If you inflate the TextView
as layout and/or put some content in it and set LayoutParams
then you can use getMeasuredHeight()
and getMeasuredWidth()
.
BUT you have to be careful with LinearLayouts
(maybe also other ViewGroups
). The issue there is, that you can get the width and height after onWindowFocusChanged()
but if you try to add some views in it, then you can't get that information until everything have been drawn. I was trying to add multiple TextViews
to LinearLayouts
to mimic a FlowLayout
(wrapping style) and so couldn't use Listeners
. Once the process is started, it should continue synchronously. So in such case, you might want to keep the width in a variable to use it later, as during adding views to layout, you might need it.
The Accept Ranges
header (the bit in writeHead()
) is required for the HTML5 video controls to work.
I think instead of just blindly send the full file, you should first check the Accept Ranges
header in the REQUEST, then read in and send just that bit. fs.createReadStream
support start
, and end
option for that.
So I tried an example and it works. The code is not pretty but it is easy to understand. First we process the range header to get the start/end position. Then we use fs.stat
to get the size of the file without reading the whole file into memory. Finally, use fs.createReadStream
to send the requested part to the client.
var fs = require("fs"),
http = require("http"),
url = require("url"),
path = require("path");
http.createServer(function (req, res) {
if (req.url != "/movie.mp4") {
res.writeHead(200, { "Content-Type": "text/html" });
res.end('<video src="http://localhost:8888/movie.mp4" controls></video>');
} else {
var file = path.resolve(__dirname,"movie.mp4");
fs.stat(file, function(err, stats) {
if (err) {
if (err.code === 'ENOENT') {
// 404 Error if file not found
return res.sendStatus(404);
}
res.end(err);
}
var range = req.headers.range;
if (!range) {
// 416 Wrong range
return res.sendStatus(416);
}
var positions = range.replace(/bytes=/, "").split("-");
var start = parseInt(positions[0], 10);
var total = stats.size;
var end = positions[1] ? parseInt(positions[1], 10) : total - 1;
var chunksize = (end - start) + 1;
res.writeHead(206, {
"Content-Range": "bytes " + start + "-" + end + "/" + total,
"Accept-Ranges": "bytes",
"Content-Length": chunksize,
"Content-Type": "video/mp4"
});
var stream = fs.createReadStream(file, { start: start, end: end })
.on("open", function() {
stream.pipe(res);
}).on("error", function(err) {
res.end(err);
});
});
}
}).listen(8888);
One way is to simply destroy the listener once you are done with it.
var removeListener = $scope.$on('navBarRight-ready', function () {
$rootScope.$broadcast('workerProfile-display', $scope.worker)
removeListener(); //destroy the listener
})
I ran into this problem and try using the flag -noverify
which really works. It is because of the new bytecode verifier. So the flag should really work.
I am using JDK 1.7.
Note: This would not work if you are using JDK 1.8
Following expression returns true:
'qwe'.constructor === String
Following expression returns true:
typeof 'qwe' === 'string'
Following expression returns false (sic!):
typeof new String('qwe') === 'string'
Following expression returns true:
typeof new String('qwe').valueOf() === 'string'
Best and right way (imho):
if (someVariable.constructor === String) {
...
}
The message from Linus Torvalds may answer your question:
Modify/edit old commit messages
Short answer: you can not (if pushed).
extract (Linus refers to BitKeeper as BK):
Side note, just out of historical interest: in BK you could.
And if you're used to it (like I was) it was really quite practical. I would apply a patch-bomb from Andrew, notice something was wrong, and just edit it before pushing it out.
I could have done the same with git. It would have been easy enough to make just the commit message not be part of the name, and still guarantee that the history was untouched, and allow the "fix up comments later" thing.
But I didn't.
Part of it is purely "internal consistency". Git is simply a cleaner system thanks to everything being SHA1-protected, and all objects being treated the same, regardless of object type. Yeah, there are four different kinds of objects, and they are all really different, and they can't be used in the same way, but at the same time, even if their encoding might be different on disk, conceptually they all work exactly the same.
But internal consistency isn't really an excuse for being inflexible, and clearly it would be very flexible if we could just fix up mistakes after they happen. So that's not a really strong argument.
The real reason git doesn't allow you to change the commit message ends up being very simple: that way, you can trust the messages. If you allowed people to change them afterwards, the messages are inherently not very trustworthy.
To be complete, you could rewrite your local commit history in order to reflect what you want, as suggested by sykora (with some rebase and reset --hard, gasp!)
However, once you publish your revised history again (with a git push origin +master:master
, the +
sign forcing the push to occur, even if it doesn't result in a "fast-forward" commit)... you might get into some trouble.
Extract from this other SO question:
I actually once pushed with --force to git.git repository and got scolded by Linus BIG TIME. It will create a lot of problems for other people. A simple answer is "don't do it".
Advanced Margin versus Padding Explained
It is inappropriate to use padding
to space content in an element; you must utilize margin
on the child element instead. Older browsers such as Internet Explorer misinterpreted the box model except when it came to using margin
which works perfectly in Internet Explorer 4.
There are two exceptions when using padding
is appropriate to use:
It is applied to an inline element which can not contain any child elements such as an input element.
You are compensating for a highly miscellaneous browser bug which a vendor *cough* Mozilla *cough* refuses to fix and are certain (to the degree that you hold regular exchanges with W3C and WHATWG editors) that you must have a working solution and this solution will not effect the styling of anything other then the bug you are compensating for.
When you have a 100% width element with padding: 50px;
you effectively get width: calc(100% + 100px);
. Since margin
is not added to the width
it will not cause unexpected layout problems when you use margin
on child elements
instead of padding
directly on the element.
So if you're not doing one of those two things do not add padding to the element but to it's direct child/children element(s) to ensure you're going to get the expected behavior in all browsers.
Chr(10)
is the Line Feed character and Chr(13)
is the Carriage Return character.
You probably won't notice a difference if you use only one or the other, but you might find yourself in a situation where the output doesn't show properly with only one or the other. So it's safer to include both.
Historically, Line Feed would move down a line but not return to column 1:
This
is
a
test.
Similarly Carriage Return would return to column 1 but not move down a line:
This
is
a
test.
Paste this into a text editor and then choose to "show all characters", and you'll see both characters present at the end of each line. Better safe than sorry.
I just had this issue.. I just added the MinGW\bin directory to the path environment variable, and it solved the issue.
This code was helpful in an app I'm working on:
Instant date = null;
Date sdf = null;
String formatTemplate = "EEE MMM dd yyyy HH:mm:ss";
try {
SimpleDateFormat isoFormat = new SimpleDateFormat("EEE MMM dd yyyy HH:mm:ss");
isoFormat.setTimeZone(TimeZone.getTimeZone(ZoneId.of("US/Pacific")));
sdf = isoFormat.parse(timeAtWhichToMakeAvailable);
date = sdf.toInstant();
} catch (Exception e) {
System.out.println("did not parse: " + timeAtWhichToMakeAvailable);
}
LOGGER.info("timeAtWhichToMakeAvailable: " + timeAtWhichToMakeAvailable);
LOGGER.info("sdf: " + sdf);
LOGGER.info("parsed to: " + date);
In Express you can use
res.redirect('http://example.com');
to redirect user from server.
To include a status code 301 or 302 it can be used
res.redirect(301, 'http://example.com');
You need the /g
(global) option, like this:
var replaced = str.replace(/ /g, '+');
You can give it a try here. Unlike most other languages, JavaScript, by default, only replaces the first occurrence.
Using the flag -Command
you can execute your entire powershell line as if it was a command in the PowerShell prompt:
powershell -Command "& '<PATH_TO_PS1_FILE>' '<ARG_1>' '<ARG_2>' ... '<ARG_N>'"
This solved my issue with running PowerShell commands in Visual Studio Post-Build and Pre-Build events.
For Eclipse version 4.3.0.v20130605-2000. You can use the Java (default) perspective. In this perspective, it provides the Package Explorer view.
To use the Java (default) perspective: Window -> Open Perspective -> Other... -> Java (default) -> Ok
If you already use the Java (default) perspective but accidentally close the Package Explorer view, you can open it by; Window -> Show View -> Package Explorer (Alt+Shift+Q,P)
If the Package Explorer still doesn't appear in the Java (default) perspective, I suggest you to right-click on the Java (default) perspective button that is located in the top-right of the Eclipse IDE and then select Reset. The Java (default) perspective will show the Package Explorer view, Code pane, Outline view, Problems, JavaDoc and Declaration View.
My answer is WRT python 2.6.2.
import commands
status, output = commands.getstatusoutput("curl -H \"Content-Type:application/json\" -k -u (few other parameters required) -X GET https://example.org -s")
print output
I apologize for not providing the required parameters 'coz it's confidential.
spring.jpa.hibernate.ddl-auto = update
change update
to create
, and run it
after run safely again change create
to update
so again all tables will not create and you can use your previous data
-m1 is the last parent of the current branch that is being fixed, -m 2 is the original parent of the branch that got merged into this.
Tortoise Git can also help here if command line is confusing.
I will answer this question in terms of AngularFire, Firebase's library for Angular.
Tl;dr: superpowers. :-)
AngularFire's three-way data binding. Angular binds the view and the $scope, i.e., what your users do in the view automagically updates in the local variables, and when your JavaScript updates a local variable the view automagically updates. With Firebase the cloud database also updates automagically. You don't need to write $http.get or $http.put requests, the data just updates.
Five-way data binding, and seven-way, nine-way, etc. I made a tic-tac-toe game using AngularFire. Two players can play together, with the two views updating the two $scopes and the cloud database. You could make a game with three or more players, all sharing one Firebase database.
AngularFire's OAuth2 library makes authorization easy with Facebook, GitHub, Google, Twitter, tokens, and passwords.
Double security. You can set up your Angular routes to require authorization, and set up rules in Firebase about who can read and write data.
There's no back end. You don't need to make a server with Node and Express. Running your own server can be a lot of work, require knowing about security, require that someone do something if the server goes down, etc.
Fast. If your server is in San Francisco and the client is in San Jose, fine. But for a client in Bangalore connecting to your server will be slower. Firebase is deployed around the world for fast connections everywhere.
As the accepted answer points out, a type reference issue when reusing types is probably the culprit. I found when you cannot easily determine the issue then using svcutil.exe command line will help you reveal the underlying problem (as John Saunders points out).
As an enhancement here is a quick example of using svcutil.
svcutil /t:code https://secure.myserver.com/services/MyService.svc /d:test /r:"C:\MyCode\MyAssembly\bin\debug\MyAssembly.dll"
Where:
Full svcutil command line reference here: http://msdn.microsoft.com/en-us/library/aa347733.aspx
Once you run svcutil, you should see the exception being thrown by the import. You may receive this type of message about one of your types: "referenced type cannot be used since it does not match imported DataContract".
This could simply be as specified in that there is a difference in one of the types in the referenced assembly from what was generated in the DataContract for the service. In my case, the service I was importing had newer, updated types from what I had in the shared assembly. This was not readily apparent because the type mentioned in the exception appeared to be the same. What was different was one of the nested complex types used by the type.
There are other more complex scenarios that may trigger this type of exception and resulting blank reference.cs. Here is one example.
If you are experiencing this issue and you are not using generic types in your data contracts nor are you using IsReference = true, then I recommend verifying for certain that your shared types are exactly the same on your client and server. Otherwise, you will likely run into this issue.
At the moment I am using the Items property rather than the DataSource, it means I have to call Add for each enum value, but its a small enum, and its temporary code anyway.
Then I can just do the Convert.ToInt32 on the value and set it with SelectedIndex.
Temporary solution, but YAGNI for now.
Cheers for the ideas, I will probably use them when I do the proper version after getting a round of customer feedback.
To simplify leed25d's answer, use a combination of an alias and a function. For example:
function __GetIt {
cp ./path/to/stuff/$* .
}
alias GetIt='__GetIt'
Simply, for me, I used ion-row
and ion-col
to achieve it. You can make it more neater by doing some changes by CSS.
<ion-row style="border-bottom: groove;">
<ion-col col-4>
<ion-label >header</ion-label>
</ion-col>
<ion-col col-4>
<ion-label >header</ion-label>
</ion-col>
<ion-col col-4>
<ion-label >header</ion-label>
</ion-col>
</ion-row>
<ion-row style="border-bottom: groove;">
<ion-col col-4>
<ion-label >row</ion-label>
</ion-col>
<ion-col col-4>
<ion-label >02/02/2018</ion-label>
</ion-col>
<ion-col col-4>
<ion-label >row</ion-label>
</ion-col>
</ion-row>
<ion-row style="border-bottom: groove;">
<ion-col col-4>
<ion-label >row</ion-label>
</ion-col>
<ion-col col-4>
<ion-label >02/02/2018</ion-label>
</ion-col>
<ion-col col-4>
<ion-label >row</ion-label>
</ion-col>
</ion-row>
<ion-row >
<ion-col col-4>
<ion-label >row</ion-label>
</ion-col>
<ion-col col-4>
<ion-label >02/02/2018</ion-label>
</ion-col>
<ion-col col-4>
<ion-label >row</ion-label>
</ion-col>
</ion-row>
If each part have the same lines number, for example 22, here my solution:
split --numeric-suffixes=2 --additional-suffix=.txt -l 22 file.txt file
and you obtain file2.txt with the first 22 lines, file3.txt the 22 next line…
Thank @hamruta-takawale, @dror-s and @stackoverflowuser2010
Based on your description in the comments, you'd simply do an array concat:
var jsonArray1 = [{'name': "doug", 'id':5}, {'name': "dofug", 'id':23}];
var jsonArray2 = [{'name': "goud", 'id':1}, {'name': "doaaug", 'id':52}];
jsonArray1 = jsonArray1.concat(jsonArray2);
// jsonArray1 = [{'name': "doug", 'id':5}, {'name': "dofug", 'id':23},
//{'name': "goud", 'id':1}, {'name': "doaaug", 'id':52}];
Do you really need to "build" it from javascript or can you simply return the built HTML from PHP and insert it into the DOM?
Use the .Clear
method.
Sheets("Test").Range("A1:C3").Clear
Perhaps using the "~" selector of CSS?
.myclass {
background: red;
}
.myclass~.myclass {
background: yellow;
}
.myclass~.myclass~.myclass {
background: green;
}
See my example on jsfiddle
Create a function in a package and return a SYS_REFCURSOR:
FUNCTION Function1 return SYS_REFCURSOR IS
l_cursor SYS_REFCURSOR;
BEGIN
open l_cursor for SELECT foo,bar FROM foobar;
return l_cursor;
END Function1;
Okay, so this post is from six months ago, but I thought I would add some info here for people who are confused about the whole API key/MD5 fingerprint business. It took me a while to figure out, so I assume others have had trouble with it too (unless I'm just that dull).
These directions are for Windows XP, but I imagine it is similar for other versions of Windows. It appears Mac and Linux users have an easier time with this so I won't address them.
So in order to use mapviews in your Android apps, Google wants to check in with them so you can sign off on an Android Maps APIs Terms Of Service agreement. I think they don't want you to make any turn-by-turn GPS apps to compete with theirs or something. I didn't really read it. Oops.
So go to http://code.google.com/android/maps-api-signup.html and check it out. They want you to check the "I have read and agree with the terms and conditions" box and enter your certificate's MD5 fingerprint. Wtf is that, you might say. I don't know, but just do what I say and your Android app doesn't get hurt.
Go to Start>Run and type cmd to open up a command prompt. You need to navigate to the directory with the keytool.exe file, which might be in a slightly different place depending on which version JDK you have installed. Mine is in C:\Program Files\Java\jdk1.6.0_21\bin
but try browsing to the Java folder and see what version you have and change the path accordingly.
After navigating to C:\Program Files\Java\<"your JDK version here">\bin in the command prompt, type
keytool -list -keystore "C:/Documents and Settings/<"your user name here">/.android/debug.keystore"
with the quotes. Of course <"your user name here"> would be your own Windows username.
(If you are having trouble finding this path and you are using Eclipse, you can check Window>preferences>Android>Build and check out the "Default Debug keystore")
Press enter and it will prompt you for a password. Just press enter. And voila, at the bottom is your MD5 fingerprint. Type your fingerprint into the text box at the Android Maps API Signup page and hit Generate API Key.
And there's your key in all its glory, with a handy sample xml layout with your key entered for you to copy and paste.
Just default the variable to the expected type:
(number=1) => ...
(number=1.0) => ...
(string='str') ...
None of the above worked for me today, so I tried putting the 0 in quotes, as shown in the example below.
Example: =IF(INDEX(a,b,c)="0","", INDEX(a,b,c))
ScheduledExecutorService executor = Executors.newScheduledThreadPool(1);
executor.schedule(yourRunnable, 1L, TimeUnit.MINUTES);
...
// when done...
executor.shutdown();
For this to work, your font also needs to be set to monospace.
If you think about it, lines can't otherwise line up perfectly perfectly.
This answer is detailed at sublime text forum:
http://www.sublimetext.com/forum/viewtopic.php?f=3&p=42052
This answer has links for choosing an appropriate font for your OS,
and gives an answer to an edge case of fonts not lining up.
Another website that lists great monospaced free fonts for programmers. http://hivelogic.com/articles/top-10-programming-fonts
On stackoverflow, see:
Michael Ruth's answer here: How to make ruler always be shown in Sublime text 2?
MattDMo's answer here: What is the default font of Sublime Text?
I have rulers set at the following:
30
50 (git commit message titles should be limited to 50 characters)
72 (git commit message details should be limited to 72 characters)
80 (Windows Command Console Window maxes out at 80 character width)
Other viewing environments that benefit from shorter lines:
github: there is no word wrap when viewing a file online
So, I try to keep .js .md and other files at 70-80 characters.
Windows Console: 80 characters.
The two syntaxes are not equivalent and it can lead to unexpected errors. Here is a simple example showing the differences. If you have a model:
from django.db import models
class Test(models.Model):
added = models.DateTimeField(auto_now_add=True)
And you create a first object:
foo = Test.objects.create(pk=1)
Then you try to create an object with the same primary key:
foo_duplicate = Test.objects.create(pk=1)
# returns the error:
# django.db.utils.IntegrityError: (1062, "Duplicate entry '1' for key 'PRIMARY'")
foo_duplicate = Test(pk=1).save()
# returns the error:
# django.db.utils.IntegrityError: (1048, "Column 'added' cannot be null")
As stated by others, your question is ambiguous at best. The problem is, you want to represent the object as a string, and then be able to construct the object again from that string.
However, note that while many object types in Java have string representations, this does not guarantee that an object can be constructed from its string representation.
To quote this source,
Object serialization is the process of saving an object's state to a sequence of bytes, as well as the process of rebuilding those bytes into a live object at some future time.
So, you see, what you want might not be possible. But it is possible to save your object's state to a byte sequence, and then reconstruct it from that byte sequence.
Don't use the alias (P
) in your WHERE
clause directly.
You can either use the same REPLACE
logic again in the WHERE
clause:
SELECT Replace(Postcode, ' ', '') AS P
FROM Contacts
WHERE Replace(Postcode, ' ', '') LIKE 'NW101%'
Or use an aliased sub query as described in Nick's answers.
use this code
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
//Change the selected background view of the cell.
[tableView deselectRowAtIndexPath:indexPath animated:YES];
}
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
//Change the selected background view of the cell.
tableView.deselectRow(at: indexPath, animated: true)
}
I needed something similar (left, center and right aligned items), but with ability to mark centered items as active. What worked for me was:
http://www.bootply.com/CSI2KcCoEM
<nav class="navbar navbar-default" role="navigation">
<div class="navbar-header">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse">
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
</div>
<div class="navbar-collapse collapse">
<ul class="nav navbar-nav">
<li class="navbar-left"><a href="#">Left 1</a></li>
<li class="navbar-left"><a href="#">Left 2</a></li>
<li class="active"><a href="#">Center 1</a></li>
<li><a href="#">Center 2</a></li>
<li><a href="#">Center 3</a></li>
<li class="navbar-right"><a href="#">Right 1</a></li>
<li class="navbar-right"><a href="#">Right 2</a></li>
</ul>
</div>
</nav>
CSS:
@media (min-width: 768px) {
.navbar-nav {
width: 100%;
text-align: center;
}
.navbar-nav > li {
float: none;
display: inline-block;
}
.navbar-nav > li.navbar-right {
float: right !important;
}
}
MIN and MAX values of any integer data type can be computed without using any library functions as below and same logic can be applied to other integer types short, int and long.
printf("Signed Char : MIN -> %d & Max -> %d\n", ~(char)((unsigned char)~0>>1), (char)((unsigned char)~0 >> 1));
printf("Unsigned Char : MIN -> %u & Max -> %u\n", (unsigned char)0, (unsigned char)(~0));
See my answer to this question: Detect support for background-attachment: fixed?
In Colum widget Text alignment will be centred automatically, so use crossAxisAlignment: CrossAxisAlignment.start
to align start.
Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
Text(""),
Text(""),
]);
SELECT a.* FROM
FROM tbl_1 a
MINUS
SELECT b.* FROM
FROM tbl_2 b
Maybe something like this:
import matplotlib.pyplot
import pylab
x = [1,2,3,4]
y = [3,4,8,6]
matplotlib.pyplot.scatter(x,y)
matplotlib.pyplot.show()
EDIT:
Let me see if I understand you correctly now:
You have:
test1 | test2 | test3
test3 | 1 | 0 | 1
test4 | 0 | 1 | 0
test5 | 1 | 1 | 0
Now you want to represent the above values in in a scatter plot, such that value of 1 is represented by a dot.
Let's say you results are stored in a 2-D list:
results = [[1, 0, 1], [0, 1, 0], [1, 1, 0]]
We want to transform them into two variables so we are able to plot them.
And I believe this code will give you what you are looking for:
import matplotlib
import pylab
results = [[1, 0, 1], [0, 1, 0], [1, 1, 0]]
x = []
y = []
for ind_1, sublist in enumerate(results):
for ind_2, ele in enumerate(sublist):
if ele == 1:
x.append(ind_1)
y.append(ind_2)
matplotlib.pyplot.scatter(x,y)
matplotlib.pyplot.show()
Notice that I do need to import pylab
, and you would have play around with the axis labels. Also this feels like a work around, and there might be (probably is) a direct method to do this.
var date = new Date();
var year = date.getFullYear();
var month = date.getMonth() + 1;
month = (month < 10 ? "0" : "") + month;
var hour = date.getHours();
hour = (hour < 10 ? "0" : "") + hour;
var day = date.getDate();
day = (hour > 12 ? "" : "") + day - 1;
day = (day < 10 ? "0" : "") + day;
x = ":"
console.log( month + x + day + x + year )
It will display the date in the month, day, then the year
Set the resize property to both. Then you can change width and height like this:
.classname img{
resize: both;
width:50px;
height:25px;
}
How does spring know which polymorphic type to use.
As long as there is only a single implementation of the interface and that implementation is annotated with @Component
with Spring's component scan enabled, Spring framework can find out the (interface, implementation) pair. If component scan is not enabled, then you have to define the bean explicitly in your application-config.xml (or equivalent spring configuration file).
Do I need @Qualifier or @Resource?
Once you have more than one implementation, then you need to qualify each of them and during auto-wiring, you would need to use the @Qualifier
annotation to inject the right implementation, along with @Autowired
annotation. If you are using @Resource (J2EE semantics), then you should specify the bean name using the name
attribute of this annotation.
Why do we autowire the interface and not the implemented class?
Firstly, it is always a good practice to code to interfaces in general. Secondly, in case of spring, you can inject any implementation at runtime. A typical use case is to inject mock implementation during testing stage.
interface IA
{
public void someFunction();
}
class B implements IA
{
public void someFunction()
{
//busy code block
}
public void someBfunc()
{
//doing b things
}
}
class C implements IA
{
public void someFunction()
{
//busy code block
}
public void someCfunc()
{
//doing C things
}
}
class MyRunner
{
@Autowire
@Qualifier("b")
IA worker;
....
worker.someFunction();
}
Your bean configuration should look like this:
<bean id="b" class="B" />
<bean id="c" class="C" />
<bean id="runner" class="MyRunner" />
Alternatively, if you enabled component scan on the package where these are present, then you should qualify each class with @Component
as follows:
interface IA
{
public void someFunction();
}
@Component(value="b")
class B implements IA
{
public void someFunction()
{
//busy code block
}
public void someBfunc()
{
//doing b things
}
}
@Component(value="c")
class C implements IA
{
public void someFunction()
{
//busy code block
}
public void someCfunc()
{
//doing C things
}
}
@Component
class MyRunner
{
@Autowire
@Qualifier("b")
IA worker;
....
worker.someFunction();
}
Then worker
in MyRunner
will be injected with an instance of type B
.
It’s because you tried to update a table without a WHERE that uses a KEY column.
The quick fix is to add SET SQL_SAFE_UPDATES=0; before your query :
SET SQL_SAFE_UPDATES=0;
Or
close the safe update mode. Edit -> Preferences -> SQL Editor -> SQL Editor remove Forbid UPDATE and DELETE statements without a WHERE clause (safe updates) .
BTW you can use TRUNCATE TABLE tablename;
to delete all the records .
Windows imposes a memory limit per process, you can see what it is for each version here
See:
User-mode virtual address space for each 64-bit process;
With IMAGE_FILE_LARGE_ADDRESS_AWARE set (default):
x64: 8 TB
Intel IPF: 7 TB
2 GB with IMAGE_FILE_LARGE_ADDRESS_AWARE cleared
There is no log file. Each node.js "app" is a separate entity. By default it will log errors to STDERR and output to STDOUT. You can change that when you run it from your shell to log to a file instead.
node my_app.js > my_app_log.log 2> my_app_err.log
Alternatively (recommended), you can add logging inside your application either manually or with one of the many log libraries:
Please follow the steps:
This code can also compare floats. It is using awk (it is not pure bash), however this shouldn't be a problem, as awk is a standard POSIX command that is most likely shipped by default with your operating system.
$ awk 'BEGIN {return_code=(-1.2345 == -1.2345) ? 0 : 1; exit} END {exit return_code}'
$ echo $?
0
$ awk 'BEGIN {return_code=(-1.2345 >= -1.2345) ? 0 : 1; exit} END {exit return_code}'
$ echo $?
0
$ awk 'BEGIN {return_code=(-1.2345 < -1.2345) ? 0 : 1; exit} END {exit return_code}'
$ echo $?
1
$ awk 'BEGIN {return_code=(-1.2345 < 2) ? 0 : 1; exit} END {exit return_code}'
$ echo $?
0
$ awk 'BEGIN {return_code=(-1.2345 > 2) ? 0 : 1; exit} END {exit return_code}'
$ echo $?
To make it shorter for use, use this function:
compare_nums()
{
# Function to compare two numbers (float or integers) by using awk.
# The function will not print anything, but it will return 0 (if the comparison is true) or 1
# (if the comparison is false) exit codes, so it can be used directly in shell one liners.
#############
### Usage ###
### Note that you have to enclose the comparison operator in quotes.
#############
# compare_nums 1 ">" 2 # returns false
# compare_nums 1.23 "<=" 2 # returns true
# compare_nums -1.238 "<=" -2 # returns false
#############################################
num1=$1
op=$2
num2=$3
E_BADARGS=65
# Make sure that the provided numbers are actually numbers.
if ! [[ $num1 =~ ^-?[0-9]+([.][0-9]+)?$ ]]; then >&2 echo "$num1 is not a number"; return $E_BADARGS; fi
if ! [[ $num2 =~ ^-?[0-9]+([.][0-9]+)?$ ]]; then >&2 echo "$num2 is not a number"; return $E_BADARGS; fi
# If you want to print the exit code as well (instead of only returning it), uncomment
# the awk line below and comment the uncommented one which is two lines below.
#awk 'BEGIN {print return_code=('$num1' '$op' '$num2') ? 0 : 1; exit} END {exit return_code}'
awk 'BEGIN {return_code=('$num1' '$op' '$num2') ? 0 : 1; exit} END {exit return_code}'
return_code=$?
return $return_code
}
$ compare_nums -1.2345 ">=" -1.2345 && echo true || echo false
true
$ compare_nums -1.2345 ">=" 23 && echo true || echo false
false
In ASPNET Core you do it in Startup.cs
public void ConfigureServices(IServiceCollection services)
{
services.AddDbContext<BloggingContext>(options =>
options.UseSqlServer(Configuration.GetConnectionString("BloggingDatabase")));
}
where your connection is defined in appsettings.json
{
"ConnectionStrings": {
"BloggingDatabase": "..."
},
}
Example from MS docs
I think you should really know what you're doing by removing the focus outline, because it can mess it up for keyboard navigation and accessibility.
If you need to take it out because of a design issue, add a :focus
state to the button that replaces this with some other visual cue, like, changing the border to a brighter color or something like that.
Sometimes I feel the need to take that annoying outline out, but I always prepare an alternate focus visual cue.
And never use the blur()
js function. Use the ::-moz-focus-inner
pseudo class.
There is an extended stored procedure sp_spaceused
that gets this information out. It's fairly convoluted to do it from the data dictionary, but This link fans out to a script that does it. This stackoverflow question has some fan-out to information on the underlying data structures that you can use to construct estimates of table and index sizes for capcity planning.
.md
extension stands for Markdown, which Github uses, among others, to format those files.
Read about Markdown:
http://daringfireball.net/projects/markdown/
http://en.wikipedia.org/wiki/Markdown
Also:
Also, if you do want to do the replacement yourself, the character you need to look for is [ ? ].
But if you're using Eclipse, it will freak out when you type that letter into a [replace] statement telling you it conflicts with Cp1252 - this is an Eclipse bug. To fix it, go to
Window -> Preferences -> General -> Workspace -> Text file encoding,
and select [UTF-8]
Quoting the spec
Array objects give special treatment to a certain class of property names. A property name P (in the form of a String value) is an array index if and only if ToString(ToUint32(P)) is equal to P and ToUint32(P) is not equal to 2^32-1. A property whose property name is an array index is also called an element. Every Array object has a length property whose value is always a nonnegative integer less than 2^32. The value of the length property is numerically greater than the name of every property whose name is an array index; whenever a property of an Array object is created or changed, other properties are adjusted as necessary to maintain this invariant. Specifically, whenever a property is added whose name is an array index, the length property is changed, if necessary, to be one more than the numeric value of that array index; and whenever the length property is changed, every property whose name is an array index whose value is not smaller than the new length is automatically deleted. This constraint applies only to own properties of an Array object and is unaffected by length or array index properties that may be inherited from its prototypes.
And here's a table for typeof
To add some background, there are two data types in JavaScript:
An object in JavaScript is similar in structure to the associative array/dictionary seen in most object oriented languages - i.e., it has a set of key-value pairs.
An array can be considered to be an object with the following properties/keys:
Hope this helped shed more light on why typeof Array returns an object. Cheers!
That's not how to add an item to a string. This:
newinv=inventory+str(add)
Means you're trying to concatenate a list and a string. To add an item to a list, use the list.append()
method.
inventory.append(add) #adds a new item to inventory
print(inventory) #prints the new inventory
Hope this helps!
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".Main"
android:label="@string/app_name"
android:windowSoftInputMode="stateHidden"
>
This works for Android 3.0, 3.1, 3.2, 4.0 - Editor Used to Compile (Eclipse 3.7)
Place the 'windowSoftInputMode="stateHidden"' in your application's manifest XML file for EACH activity that you wish for the software keyboard to remain hidden in. This means the keyboard will not come up automatically and the user will have to 'click' on a text field to bring it up. I searched for almost an hour for something that worked so I thought I would share.
My first suggestion is to use Designer to create your GUIs. Typing them out yourself sucks, takes more time, and you will definitely make more mistakes than Designer.
Here are some PyQt tutorials to help get you on the right track. The first one in the list is where you should start.
A good guide for figuring out what methods are available for specific classes is the PyQt4 Class Reference. In this case you would look up QLineEdit
and see the there is a text
method.
To answer your specific question:
To make your GUI elements available to the rest of the object, preface them with self.
import sys
from PyQt4.QtCore import SIGNAL
from PyQt4.QtGui import QDialog, QApplication, QPushButton, QLineEdit, QFormLayout
class Form(QDialog):
def __init__(self, parent=None):
super(Form, self).__init__(parent)
self.le = QLineEdit()
self.le.setObjectName("host")
self.le.setText("Host")
self.pb = QPushButton()
self.pb.setObjectName("connect")
self.pb.setText("Connect")
layout = QFormLayout()
layout.addWidget(self.le)
layout.addWidget(self.pb)
self.setLayout(layout)
self.connect(self.pb, SIGNAL("clicked()"),self.button_click)
self.setWindowTitle("Learning")
def button_click(self):
# shost is a QString object
shost = self.le.text()
print shost
app = QApplication(sys.argv)
form = Form()
form.show()
app.exec_()
This might be a new function, but you can also use old functions :
select DATEFROMPARTS(year(@mydate),month(@mydate),'01')
If the date in the variable was for example '2017-10-29'
it would return a date of '2017-10-01'
In Swift 3.0
If you want to dismiss a presented view controller
self.dismiss(animated: true, completion: nil)
I think that for simple HTTP requests like this it's better to use the request
module. You need to install it with npm (npm install request
) and then your code can look like this:
const request = require('request')
,url = 'http://graph.facebook.com/517267866/?fields=picture'
request(url, (error, response, body)=> {
if (!error && response.statusCode === 200) {
const fbResponse = JSON.parse(body)
console.log("Got a response: ", fbResponse.picture)
} else {
console.log("Got an error: ", error, ", status code: ", response.statusCode)
}
})
As of now, Postman comes with its own "Console." Click the terminal-like icon on the bottom left to open the console. Send a request, and you can inspect the request from within Postman's console.
I have this weird solution that runs war applications in a embedded Jetty server but these apps need also to run on standard Tomcat servers, and we have some special properties in the manfest.
The problem was that when in Tomcat, the manifest could be read, but when in jetty, a random manifest was picked up (which missed the special properties)
Based on Alex Konshin's answer, I came up with the following solution (the inputstream is then used in a Manifest class):
private static InputStream getWarManifestInputStreamFromClassJar(Class<?> cl ) {
InputStream inputStream = null;
try {
URLClassLoader classLoader = (URLClassLoader)cl.getClassLoader();
String classFilePath = cl.getName().replace('.','/')+".class";
URL classUrl = classLoader.getResource(classFilePath);
if ( classUrl==null ) return null;
String classUri = classUrl.toString();
if ( !classUri.startsWith("jar:") ) return null;
int separatorIndex = classUri.lastIndexOf('!');
if ( separatorIndex<=0 ) return null;
String jarManifestUri = classUri.substring(0,separatorIndex+2);
String containingWarManifestUri = jarManifestUri.substring(0,jarManifestUri.indexOf("WEB-INF")).replace("jar:file:/","file:///") + MANIFEST_FILE_PATH;
URL url = new URL(containingWarManifestUri);
inputStream = url.openStream();
return inputStream;
} catch ( Throwable e ) {
// handle errors
LOGGER.warn("No manifest file found in war file",e);
return null;
}
}
I had many users controls but one refused to show in the Toolbox, even though I rebuilt the solution and it was checked in the Choose Items... dialog.
Solution:
Note this also requires you have the AutoToolboxPopulate option enabled. As @DaveF answer suggests.
Alternate Solution: I'm not sure if this works, and I couldn't try it since I already resolved my issue, but if you unchecked the user control from the Choose Items... dialog, hit OK, then opened it back up and checked the user control. That might also work.
this worked fine for me:
<div class="card card-body " style="height:80% !important">
forcing our CSS over the bootstraps general CSS.
The Answer by McDowell is correct one. However if you try other suggestion in few of the posts above.
HttpEntity responseEntity = httpResponse.getEntity();
if(responseEntity!=null) {
response = EntityUtils.toString(responseEntity);
S.O.P (response);
}
Then it will give you illegalStateException stating that content is already consumed.
System.Diagnostics.Process.Start("explorer.exe",@"c:\teste");
Just change the path or declare it in a string
First of all check error log in the path that your webserver indicates. Then maybe the browser is showing friendly error messages, so disable it.
https://superuser.com/questions/202244/show-http-error-details-in-google-chrome
If you are developing spring boot application add "SpringBootServletInitializer" as shown in following code to your main file. Because without SpringBootServletInitializer Tomcat will consider it as normal application it will not consider as Spring boot application
@SpringBootApplication
public class DemoApplication extends *SpringBootServletInitializer*{
@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
return application.sources(DemoApplication .class);
}
public static void main(String[] args) {
SpringApplication.run(DemoApplication .class, args);
}
}
Side-by-side view of how the array and $@ are practically the same.
Code:
#!/bin/bash
echo "Dollar-1 : $1"
echo "Dollar-2 : $2"
echo "Dollar-3 : $3"
echo "Dollar-AT: $@"
echo ""
myArray=( "$@" )
echo "A Val 0: ${myArray[0]}"
echo "A Val 1: ${myArray[1]}"
echo "A Val 2: ${myArray[2]}"
echo "A All Values: ${myArray[@]}"
Input:
./bash-array-practice.sh 1 2 3 4
Output:
Dollar-1 : 1
Dollar-2 : 2
Dollar-3 : 3
Dollar-AT: 1 2 3 4
A Val 0: 1
A Val 1: 2
A Val 2: 3
A All Values: 1 2 3 4
Check official website https://aws.amazon.com/free/compute/lightsail-vs-ec2/
Amazon Lightsail – The Power of AWS, the Simplicity of a VPS https://aws.amazon.com/blogs/aws/amazon-lightsail-the-power-of-aws-the-simplicity-of-a-vps/
Amazon EC2 vs Amazon Lightsail (comparison on point )
Source : https://www.vpsbenchmarks.com/compare/features/ec2_vs_lightsail
using (B a = new B())
{
DoSomethingWith(a);
}
is equivalent to
B a = new B();
try
{
DoSomethingWith(a);
}
finally
{
((IDisposable)a).Dispose();
}
You can use Async - Await:
async function axiosTest() {
const response = await axios.get(url);
const data = await response.json();
}
Following Code will work for "Inserting values into a SQL Server database using ado.net via C#"
// Your Connection string
string connectionString = "Data Source=DELL-PC;initial catalog=AdventureWorks2008R2 ; User ID=sa;Password=sqlpass;Integrated Security=SSPI;";
// Collecting Values
string firstName="Name",
lastName="LastName",
userName="UserName",
password="123",
gender="Male",
contact="Contact";
int age=26;
// Query to be executed
string query = "Insert Into dbo.regist (FirstName, Lastname, Username, Password, Age, Gender,Contact) " +
"VALUES (@FN, @LN, @UN, @Pass, @Age, @Gender, @Contact) ";
// instance connection and command
using(SqlConnection cn = new SqlConnection(connectionString))
using(SqlCommand cmd = new SqlCommand(query, cn))
{
// add parameters and their values
cmd.Parameters.Add("@FN", System.Data.SqlDbType.NVarChar, 100).Value = firstName;
cmd.Parameters.Add("@LN", System.Data.SqlDbType.NVarChar, 100).Value = lastName;
cmd.Parameters.Add("@UN", System.Data.SqlDbType.NVarChar, 100).Value = userName;
cmd.Parameters.Add("@Pass", System.Data.SqlDbType.NVarChar, 100).Value = password;
cmd.Parameters.Add("@Age", System.Data.SqlDbType.Int).Value = age;
cmd.Parameters.Add("@Gender", System.Data.SqlDbType.NVarChar, 100).Value = gender;
cmd.Parameters.Add("@Contact", System.Data.SqlDbType.NVarChar, 100).Value = contact;
// open connection, execute command and close connection
cn.Open();
cmd.ExecuteNonQuery();
cn.Close();
}
You are getting Floating point exception because Number % i
, when i
is 0
:
int Is_Prime( int Number ){
int i ;
for( i = 0 ; i < Number / 2 ; i++ ){
if( Number % i != 0 ) return -1 ;
}
return Number ;
}
Just start the loop at i = 2
. Since i = 1
in Number % i
it always be equal to zero, since Number is a int.
Netbeans has great C and C++ support. Some people complain that it's bloated and slow, but I've been using it almost exclusively for personal projects and love it. The code assistance feature is one of the best I've seen.
You can also use the following code to open new page in new tab.
<asp:Button ID="Button1" runat="server" Text="Go"
OnClientClick="window.open('yourPage.aspx');return false;"
onclick="Button3_Click" />
And just call Response.Redirect("yourPage.aspx"); behind button event.
Where is x found?
x is not found as you haven't defined it. :-) It could be found in code1 (global) or code3 (local) if you put it there.
code2 (class members) aren't visible to code inside methods of the same class — you would usually access them using self. code4/code5 (loops) live in the same scope as code3, so if you wrote to x in there you would be changing the x instance defined in code3, not making a new x.
Python is statically scoped, so if you pass ‘spam’ to another function spam will still have access to globals in the module it came from (defined in code1), and any other containing scopes (see below). code2 members would again be accessed through self.
lambda is no different to def. If you have a lambda used inside a function, it's the same as defining a nested function. In Python 2.2 onwards, nested scopes are available. In this case you can bind x at any level of function nesting and Python will pick up the innermost instance:
x= 0
def fun1():
x= 1
def fun2():
x= 2
def fun3():
return x
return fun3()
return fun2()
print fun1(), x
2 0
fun3 sees the instance x from the nearest containing scope, which is the function scope associated with fun2. But the other x instances, defined in fun1 and globally, are not affected.
Before nested_scopes — in Python pre-2.1, and in 2.1 unless you specifically ask for the feature using a from-future-import — fun1 and fun2's scopes are not visible to fun3, so S.Lott's answer holds and you would get the global x:
0 0
I think this is a case when a static query is just not the way to go. Dynamically build the list for your in clause, escape your single quotes, and dynamically build SQL. In this case you probably won't see much of a difference with any method due to the small list, but the most efficient method really is to send the SQL exactly as it is written in your post. I think it is a good habit to write it the most efficient way, rather than to do what makes the prettiest code, or consider it bad practice to dynamically build SQL.
I have seen the split functions take longer to execute than the query themselves in many cases where the parameters get large. A stored procedure with table valued parameters in SQL 2008 is the only other option I would consider, although this will probably be slower in your case. TVP will probably only be faster for large lists if you are searching on the primary key of the TVP, because SQL will build a temporary table for the list anyway (if the list is large). You won't know for sure unless you test it.
I have also seen stored procedures that had 500 parameters with default values of null, and having WHERE Column1 IN (@Param1, @Param2, @Param3, ..., @Param500). This caused SQL to build a temp table, do a sort/distinct, and then do a table scan instead of an index seek. That is essentially what you would be doing by parameterizing that query, although on a small enough scale that it won't make a noticeable difference. I highly recommend against having NULL in your IN lists, as if that gets changed to a NOT IN it will not act as intended. You could dynamically build the parameter list, but the only obvious thing that you would gain is that the objects would escape the single quotes for you. That approach is also slightly slower on the application end since the objects have to parse the query to find the parameters. It may or may not be faster on SQL, as parameterized queries call sp_prepare, sp_execute for as many times you execute the query, followed by sp_unprepare.
The reuse of execution plans for stored procedures or parameterized queries may give you a performance gain, but it will lock you in to one execution plan determined by the first query that is executed. That may be less than ideal for subsequent queries in many cases. In your case, reuse of execution plans will probably be a plus, but it might not make any difference at all as the example is a really simple query.
Cliffs notes:
For your case anything you do, be it parameterization with a fixed number of items in the list (null if not used), dynamically building the query with or without parameters, or using stored procedures with table valued parameters will not make much of a difference. However, my general recommendations are as follows:
Your case/simple queries with few parameters:
Dynamic SQL, maybe with parameters if testing shows better performance.
Queries with reusable execution plans, called multiple times by simply changing the parameters or if the query is complicated:
SQL with dynamic parameters.
Queries with large lists:
Stored procedure with table valued parameters. If the list can vary by a large amount use WITH RECOMPILE on the stored procedure, or simply use dynamic SQL without parameters to generate a new execution plan for each query.
In Windows 10 if in the prompt command the path where you start sqlite is
C:\users\USER_NAME
You can find it in the user home folder.
The .db
file is stored where you start the sqlite command.
I hope this solve the issue
The PHP documentation for time() shows an example of how you can get a date one week out. You can modify this to instead go into a loop that iterates a maximum of 7 times, get the timestamp each time, get the corresponding date, and from that get the day of the week.
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />
serves two purposes.
IE=edge
: specifies that IE should run in the highest mode available to that version of IE as opposed to a compatability mode; IE8 can support up to IE8 modes, IE9 can support up to IE9 modes, and so on.chrome=1
: specifies that Google Chrome frame should start if the user has it installedThe IE=edge
flag is still relevant for IE versions 10 and below. IE11 sets this mode as the default.
As for the chrome flag, you can leave it if your users still use Chrome Frame. Despite support and updates for Chrome Frame ending, one can still install and use the final release. If you remove the flag, Chrome Frame will not be activated when installed. For other users, chrome=1
will do nothing more than consume a few bytes of bandwidth.
I recommend you analyze your audience and see if their browsers prohibit any needed features and then decide. Perhaps it might be better to encourage them to use a more modern, evergreen browser.
Note, the W3C validator will flag chrome=1
as an error:
Error: A meta element with an http-equiv attribute whose value is
X-UA-Compatible must have a content attribute with the value IE=edge.
Suggested solutions did not work. I had to unignore several projects, by right clicking on the pom => maven => unignore project.
Then after a
mvn clean install -T 6 -DskipTests
in the console, IntelliJ was happy again. No idea how the projects became ignored...
Try This:
TextView err = (TextView)findViewById(R.id.text);
Ensure you import TextView.
Android Studio 2.2.3 Linux Mint 18.1
Inside your 'project view' open Gradle Scripts -> build.gradle(Module:app) and put your mouse pointer inside the word dependencies.
Click on the light bulb and click "add library dependency" and for me all the libraries I wanted were listed there.
example libraries that came up for me: compile 'com.android.support:gridlayout-v7:25.1.0' compile 'com.android.support:support-v13:25.1.0'
I am now looking to add android support by default in Gradles default configuration.
You can do it via ODBC. The steps to do it:
In angular using material design sidenav I had to use the following:
let ele = document.getElementsByClassName('md-sidenav-content');
let eleArray = <Element[]>Array.prototype.slice.call(ele);
eleArray.map( val => {
val.scrollTop = val.scrollHeight;
});
Or is it like saying "Since this is python v2.7, use that different 'print' function that has also been added to python v2.7, after it was added in python 3. So my 'print' will no longer be statements (eg print "message" ) but functions (eg, print("message", options). That way when my code is run in python 3, 'print' will not break."
In
from __future__ import print_function
print_function is the module containing the new implementation of 'print' as per how it is behaving in python v3.
This has more explanation: http://python3porting.com/noconv.html
The answers given were not totally complete if multiple sourcepath and subpackages have to be processed.
The following command line will process all the packages under com and LOR (lord of the rings) located into /home/rudy/IdeaProjects/demo/src/main/java and /home/rudy/IdeaProjects/demo/src/test/java/
Please note:
rudy@rudy-ThinkPad-T590:~$ javadoc -d /home/rudy/IdeaProjects/demo_doc
-sourcepath /home/rudy/IdeaProjects/demo/src/main/java/
:/home/rudy/IdeaProjects/demo/src/test/java/
-subpackages com:LOR
-private
rudy@rudy-ThinkPad-T590:~/IdeaProjects/demo/src/main/java$ ls -R
.: com LOR
./com: example
./com/example: demo
./com/example/demo: DemowApplication.java
./LOR: Race.java TolkienCharacter.java
rudy@rudy-ThinkPad-T590:~/IdeaProjects/demo/src/test/java$ ls -R
.: com
./com: example
./com/example: demo
./com/example/demo: AssertJTest.java DemowApplicationTests.java
Use sorted function, like this:
map(lambda x: sorted(x)[1],lst)
The easiest way is using "htop". You can install "htop" (a fancier version of top) which will show you all your cores, process and memory usage.
Press "Shift+H" to show all process or press again to hide it. Press "F4" key to search your process name.
Installing on Ubuntu or Debian:
sudo apt-get install htop
Installing on Redhat or CentOS:
yum install htop
dnf install htop [On Fedora 22+ releases]
If you want to compile "htop" from source code, you will find it here.
The simpler way is:
with open("outfile", "w") as outfile:
outfile.write("\n".join(itemlist))
You could ensure that all items in item list are strings using a generator expression:
with open("outfile", "w") as outfile:
outfile.write("\n".join(str(item) for item in itemlist))
Remember that all itemlist
list need to be in memory, so, take care about the memory consumption.
Problem: You do not have permission to write to the directories that npm uses to store global packages and commands.
Solution: Allow permission for npm.
Open a terminal:
command + spacebar then type 'terminal'
Enter this command:
sudo chown -R $(whoami) $(npm config get prefix)/{lib/node_modules,bin,share}
This solution allows permission to ONLY the directories needed, keeping the other directories nice and safe.
Alternate solution to doing shallow clone (git clone --depth=1 <URL>
) would be, if remote side supports it, to use --remote
option of git archive:
$ git archive --format=tar --remote=<repository URL> HEAD | tar xf -
Or, if remote repository in question is browse-able using some web interface like gitweb or GitHub, then there is a chance that it has 'snapshot' feature, and you can download latest version (without versioning information) from web interface.
None of the above worked for me... found out something wrong with my init method on my appDelegate. If you are implementing the init method make sure you do it correctly
i had this:
- (id)init {
if (!self) {
self = [super init];
sharedInstance = self;
}
return sharedInstance;
}
and changed it to this:
- (id)init {
if (!self) {
self = [super init];
}
sharedInstance = self;
return sharedInstance;
}
where "sharedInstance" its a pointer to my appDelegate singleton
1) In case you want to reload the same URL:
mWebView.loadUrl("http://www.websitehere.php");
so the full code would be
newButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
dgeActivity.this.mWebView.loadUrl("http://www.websitehere.php");
}});
2) You can also call mWebView.reload()
but be aware this reposts a page if the request was POST, so only works correctly with GET.
Just few more details:
`image` blob
$image = addslashes(file_get_contents($_FILES['image']['tmp_name']));
$sql = "INSERT INTO `product_images` (`id`, `image`) VALUES ('1', '{$image}')";
<img src="data:image/png;base64,'.base64_encode($row['image']).'">
Another great solution to debug the Network calls before redirecting to other pages is to select the beforeunload
event break point
This way you assure to break the flow right before it redirecting it to another page, this way all network calls, network data and console logs are still there.
This solution is best when you want to check what is the response of the calls
P.S: You can also use XHR break points if you want to stop right before a specific call or any call (see image example)
New functionality in the framework and support libs allow exactly this. There are three 'pieces of the puzzle':
fitsSystemWindows
so that it is layed out behind the system bars.Theme.Material
's normal status bar coloring so that DrawerLayout can draw there instead.I'll assume that you will use the new appcompat.
First, your layout should look like this:
<!-- The important thing to note here is the added fitSystemWindows -->
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/my_drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<!-- Your normal content view -->
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<!-- We use a Toolbar so that our drawer can be displayed
in front of the action bar -->
<android.support.v7.widget.Toolbar
android:id="@+id/my_awesome_toolbar"
android:layout_height="wrap_content"
android:layout_width="match_parent"
android:minHeight="?attr/actionBarSize"
android:background="?attr/colorPrimary" />
<!-- The rest of your content view -->
</LinearLayout>
<!-- Your drawer view. This can be any view, LinearLayout
is just an example. As we have set fitSystemWindows=true
this will be displayed under the status bar. -->
<LinearLayout
android:layout_width="304dp"
android:layout_height="match_parent"
android:layout_gravity="left|start"
android:fitsSystemWindows="true">
<!-- Your drawer content -->
</LinearLayout>
</android.support.v4.widget.DrawerLayout>
Then in your Activity/Fragment:
public void onCreate(Bundled savedInstanceState) {
super.onCreate(savedInstanceState);
// Your normal setup. Blah blah ...
// As we're using a Toolbar, we should retrieve it and set it
// to be our ActionBar
Toolbar toolbar = (...) findViewById(R.id.my_awesome_toolbar);
setSupportActionBar(toolbar);
// Now retrieve the DrawerLayout so that we can set the status bar color.
// This only takes effect on Lollipop, or when using translucentStatusBar
// on KitKat.
DrawerLayout drawerLayout = (...) findViewById(R.id.my_drawer_layout);
drawerLayout.setStatusBarBackgroundColor(yourChosenColor);
}
Then you need to make sure that the DrawerLayout is visible behind the status bar. You do that by changing your values-v21 theme:
values-v21/themes.xml
<style name="Theme.MyApp" parent="Theme.AppCompat.Light.NoActionBar">
<item name="android:windowDrawsSystemBarBackgrounds">true</item>
<item name="android:statusBarColor">@android:color/transparent</item>
<item name="android:windowTranslucentStatus">true</item>
</style>
Note:
If a <fragment android:name="fragments.NavigationDrawerFragment">
is used instead of
<LinearLayout
android:layout_width="304dp"
android:layout_height="match_parent"
android:layout_gravity="left|start"
android:fitsSystemWindows="true">
<!-- Your drawer content -->
</LinearLayout>
the actual layout, the desired effect will be achieved if you call fitsSystemWindows(boolean)
on a view that you return from onCreateView
method.
@Override
public View onCreateView(LayoutInflater inflater,
ViewGroup container,
Bundle savedInstanceState) {
View mDrawerListView = inflater.inflate(
R.layout.fragment_navigation_drawer, container, false);
mDrawerListView.setFitsSystemWindows(true);
return mDrawerListView;
}
Outside of character classes, it is conventional not to escape hyphens. If I saw an escaped hyphen outside of a character class, that would suggest to me that it was written by someone who was not very comfortable with regexes.
Inside character classes, I don't think one way is conventional over the other; in my experience, it usually seems to be to put either first or last, as in [-._:]
or [._:-]
, to avoid the backslash; but I've also often seen it escaped instead, as in [._\-:]
, and I wouldn't call that unconventional.
You can use:
String.format("%02d", myNumber)
See also the javadocs
found here: https://gist.github.com/jlong/2428561
var parser = document.createElement('a');
parser.href = "http://example.com:3000/pathname/?search=test#hash";
parser.protocol; // => "http:"
parser.host; // => "example.com:3000"
parser.hostname; // => "example.com"
parser.port; // => "3000"
parser.pathname; // => "/pathname/"
parser.hash; // => "#hash"
parser.search; // => "?search=test"
parser.origin; // => "http://example.com:3000"
MySQL is different from most DBMSs use of +
or ||
for concatenation. It uses the CONCAT
function:
SELECT CONCAT(first_name, " ", last_name) AS Name FROM test.student
As @eggyal pointed out in comments, you can enable string concatenation with the ||
operator in MySQL by setting the PIPES_AS_CONCAT
SQL mode.
Update Android SDK Tools in Android SDK Manager for revision 22.0.1. It worked for me.
I spent quite a while wrestling with this problem and then I realized I was making a simple mistake in the fact that I had forgotten which particular database I was targeting my connection to. I was using the standard SQL Server connection window to enter the credentials:
I had to check the Connection Properties tab to verify that I was choosing the correct database to connect to. I had accidentally left the Connect to database option here set to a selection from a previous session. This is why I was unable to connect to the database I thought I was trying to connect to.
Note that you need to click the Options >>
button in order for the Connection Properties and other tabs to show up.
Page Control can be contained in Window Control but vice versa is not possible
You can use Page control within the Window control using NavigationWindow and Frame controls. Window is the root control that must be used to hold/host other controls (e.g. Button) as container. Page is a control which can be hosted in other container controls like NavigationWindow or Frame. Page control has its own goal to serve like other controls (e.g. Button). Page is to create browser like applications. So if you host Page in NavigationWindow, you will get the navigation implementation built-in. Pages are intended for use in Navigation applications (usually with Back and Forward buttons, e.g. Internet Explorer).
WPF provides support for browser style navigation inside standalone application using Page class. User can create multiple pages, navigate between those pages along with data.There are multiple ways available to Navigate through one page to another page.
Browser have cross domain security at client side which verify that server allowed to fetch data from your domain. If Access-Control-Allow-Origin
not available in response header, browser disallow to use response in your JavaScript code and throw exception at network level. You need to configure cors
at your server side.
You can fetch request using mode: 'cors'
. In this situation browser will not throw execption for cross domain, but browser will not give response in your javascript function.
So in both condition you need to configure cors
in your server or you need to use custom proxy server.