I don't think you need to select anything at all. I opened two blank workbooks Book1 and Book2, put the value "A" in Range("A1") of Sheet1 in Book2, and submitted the following code in the immediate window -
Workbooks(2).Worksheets(1).Range("A1").Copy Workbooks(1).Worksheets(1).Range("A1")
The Range("A1") in Sheet1 of Book1 now contains "A".
Also, given the fact that in your code you are trying to copy from the ActiveWorkbook to "myfile.xls", the order seems to be reversed as the Copy method should be applied to a range in the ActiveWorkbook, and the destination (argument to the Copy function) should be the appropriate range in "myfile.xls".
This may happen if there is any read and write permission denial to the user. Like C:\Windows\System32\ have restricted access and you are cloned and trying to make from such restricted directory.
On most POSIX systems (through it's not in the POSIX standard) there is the endian.h, which can be used to determine what encoding your system uses. From there it's something like this:
unsigned int change_endian(unsigned int x)
{
unsigned char *ptr = (unsigned char *)&x;
return (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | ptr[3];
}
This swaps the order (from big endian to little endian):
If you have the number 0xDEADBEEF (on a little endian system stored as 0xEFBEADDE), ptr[0] will be 0xEF, ptr[1] is 0xBE, etc.
But if you want to use it for networking, then htons, htonl and htonll (and their inverses ntohs, ntohl and ntohll) will be helpful for converting from host order to network order.
char string[something];
sprintf(string, "%d", 42);
#input_box {
margin: 0 auto;
text-align: left;
}
#div {
text-align: center;
}
<div id="div">
<label for="input_box">Input: </label><input type="text" id="input_box" name="input_box" />
</div>
or you could do it using padding, but this is not that great of an idea.
Considering the String
class' length
method returns an int
, the maximum length that would be returned by the method would be Integer.MAX_VALUE
, which is 2^31 - 1
(or approximately 2 billion.)
In terms of lengths and indexing of arrays, (such as char[]
, which is probably the way the internal data representation is implemented for String
s), Chapter 10: Arrays of The Java Language Specification, Java SE 7 Edition says the following:
The variables contained in an array have no names; instead they are referenced by array access expressions that use nonnegative integer index values. These variables are called the components of the array. If an array has
n
components, we sayn
is the length of the array; the components of the array are referenced using integer indices from0
ton - 1
, inclusive.
Furthermore, the indexing must be by int
values, as mentioned in Section 10.4:
Arrays must be indexed by
int
values;
Therefore, it appears that the limit is indeed 2^31 - 1
, as that is the maximum value for a nonnegative int
value.
However, there probably are going to be other limitations, such as the maximum allocatable size for an array.
# s1 == source string
# char == find this character
# repl == replace with this character
def findreplace(s1, char, repl):
s1 = s1.replace(char, repl)
return s1
# find each 'i' in the string and replace with a 'u'
print findreplace('it is icy', 'i', 'u')
# output
''' ut us ucy '''
put this in your php page.
ini_set("error_reporting", E_ALL & ~E_DEPRECATED);
Trying to run a servlet in Eclipse (right-click + "Run on Server") I encountered the very same problem: "HTTP Status: 404 / Description: The origin server did not find a current representation for the target resource or is not willing to disclose that one exists." Adding an index.html did not help, neither changing various settings of the tomcat.
Finally, I found the problem in an unexpected place: In Eclipse, the Option "Build automatically" was not set. Thus the servlet was not compiled, and no File "myServlet.class" was deployed to the server (in my case in the path .wtpwebapps/projectXX/WEB-INF/classes/XXpackage/). Building the project manually and restarting the server solved the problem.
My environment: Eclipse Neon.3 Release 4.6.3, Tomcat-Version 8.5.14., OS Linux Mint 18.1.
You have a view model to which your view is strongly typed => use strongly typed helpers:
<%= Html.DropDownListFor(
x => x.SelectedAccountId,
new SelectList(Model.Accounts, "Value", "Text")
) %>
Also notice that I use a SelectList
for the second argument.
And in your controller action you were returning the view model passed as argument and not the one you constructed inside the action which had the Accounts property correctly setup so this could be problematic. I've cleaned it a bit:
public ActionResult AccountTransaction()
{
var accounts = Services.AccountServices.GetAccounts(false);
var viewModel = new AccountTransactionView
{
Accounts = accounts.Select(a => new SelectListItem
{
Text = a.Description,
Value = a.AccountId.ToString()
})
};
return View(viewModel);
}
^[0-9]{1,2}[:.,-]?po$
Add any other allowable non-alphanumeric characters to the middle brackets to allow them to be parsed as well.
sudo ./scriptname
sudo bash will basically switch you over to running a shell as root, although it's probably best to stay as su as little as possible.
One way you could accomplish this (in a hackish way) is to create a wrapper class for the List
. Like this:
class ListWrapper {
List<String> myList;
// getters and setters
}
Then your controller method signature would look like this:
public String controllerMethod(ListWrapper wrapper) {
....
}
No need to use the @RequestParam
or @ModelAttribute
annotation if the collection name you pass in the request matches the collection field name of the wrapper class, in my example your request parameters should look like this:
myList[0] : 'myValue1'
myList[1] : 'myValue2'
myList[2] : 'myValue3'
otherParam : 'otherValue'
anotherParam : 'anotherValue'
You have to use MySQLi, below code works well
<?php
$mysqli = new mysqli("localhost", "my_user", "my_password", "world");
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
$query = "SELECT CURRENT_USER();";
$query .= "SELECT Name FROM City ORDER BY ID LIMIT 20, 5";
/* execute multi query */
if ($mysqli->multi_query($query)) {
do {
/* store first result set */
if ($result = $mysqli->store_result()) {
while ($row = $result->fetch_row()) {
printf("%s\n", $row[0]);
}
$result->free();
}
/* print divider */
if ($mysqli->more_results()) {
printf("-----------------\n");
}
} while ($mysqli->next_result());
}
/* close connection */
$mysqli->close();
?>
To set Landscape orientation to all view of your app & allow only one view to All orientations (to be able to add camera roll for example):
In AppDelegate.swift:
var adaptOrientation = false
In: didFinishLaunchingWithOptions
NSNotificationCenter.defaultCenter().addObserver(self, selector: "adaptOrientationAction:", name:"adaptOrientationAction", object: nil)
Elsewhere in AppDelegate.swift:
func application(application: UIApplication, supportedInterfaceOrientationsForWindow window: UIWindow?) -> Int {
return checkOrientation(self.window?.rootViewController)
}
func checkOrientation(viewController:UIViewController?)-> Int{
if (adaptOrientation == false){
return Int(UIInterfaceOrientationMask.Landscape.rawValue)
}else {
return Int(UIInterfaceOrientationMask.All.rawValue)
}
}
func adaptOrientationAction(notification: NSNotification){
if adaptOrientation == false {
adaptOrientation = true
}else {
adaptOrientation = false
}
}
Then in the view that segue to the one you want to be able to have All orientations:
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject!) {
if (segue.identifier == "YOURSEGUE") {
NSNotificationCenter.defaultCenter().postNotificationName("adaptOrientationAction", object: nil)
}
}
override func viewWillAppear(animated: Bool) {
if adaptOrientation == true {
NSNotificationCenter.defaultCenter().postNotificationName("adaptOrientationAction", object: nil)
}
}
Last thing is to tick Device orientation: - Portrait - Landscape Left - Landscape Right
This will do:
▢
It is ?
(known as a "WHITE SQUARE WITH ROUNDED CORNERS" on fileformat.info)
Or
◻
as ?
(known as a "WHITE MEDIUM SQUARE" on the same website)
Two with shadow:
❏
❑
as ? and ? . The difference between them is the shadows' shape. You can see it if you zoom in or if you print it out. (They are known as "LOWER RIGHT DROP-SHADOWED WHITE SQUARE" and "LOWER RIGHT SHADOWED WHITE SQUARE", respectively).
You can also use
☐
which is ?
(known as a "BALLOT BOX").
A sample is at http://jsfiddle.net/S2QCt/267/
(a note: on the Mac, ▢
is quite nice, because it is bigger and somewhat more elegant than ☐
On Windows, ☐
looks more standard, while ▢
is somewhat small.)
Several third-party libraries have classes encapsulating the concept of a range, such as Apache commons-lang's Range (and subclasses).
Using classes such as this you could express your constraint similar to:
if (new IntRange(0, 5).contains(orderBean.getFiles().size())
// (though actually Apache's Range is INclusive, so it'd be new Range(1, 4) - meh
with the added bonus that the range object could be defined as a constant value elsewhere in the class.
However, without pulling in other libraries and using their classes, Java's strong syntax means you can't massage the language itself to provide this feature nicely. And (in my own opinion), pulling in a third party library just for this small amount of syntactic sugar isn't worth it.
For me save_queries
option was turned off so,
$this->db->save_queries = TRUE; //Turn ON save_queries for temporary use.
$str = $this->db->last_query();
echo $str;
Ref: Can't get result from $this->db->last_query(); codeigniter
Use this tool (uses the new apksigner from Google):
https://github.com/patrickfav/uber-apk-signer
Disclaimer: Im the developer :)
You need to generate a keystore once and use it to sign your unsigned
apk.
Use the keytool
provided by the JDK found in %JAVA_HOME%/bin/
keytool -genkey -v -keystore my.keystore -keyalg RSA -keysize 2048 -validity 10000 -alias app
zipalign
which is a tool provided by the Android SDK found in e.g. %ANDROID_HOME%/sdk/build-tools/24.0.2/
is a mandatory optimization step if you want to upload the apk to the Play Store.
zipalign -p 4 my.apk my-aligned.apk
Note: when using the old jarsigner
you need to zipalign AFTER signing. When using the new apksigner
method you do it BEFORE signing (confusing, I know). Invoking zipalign before apksigner works fine because apksigner preserves APK alignment and compression (unlike jarsigner).
You can verify the alignment with
zipalign -c 4 my-aligned.apk
Use jarsigner
which, like the keytool, comes with the JDK distribution found in %JAVA_HOME%/bin/
and use it like so:
jarsigner -verbose -sigalg SHA1withRSA -digestalg SHA1 -keystore my.keystore my-app.apk my_alias_name
and can be verified with
jarsigner -verify -verbose my_application.apk
Android 7.0 introduces APK Signature Scheme v2, a new app-signing scheme that offers faster app install times and more protection against unauthorized alterations to APK files (See here and here for more details). Therefore, Google implemented their own apk signer called apksigner
(duh!)
The script file can be found in %ANDROID_HOME%/sdk/build-tools/24.0.3/
(the .jar is in the /lib
subfolder). Use it like this
apksigner sign --ks my.keystore my-app.apk --ks-key-alias alias_name
and can be verified with
apksigner verify my-app.apk
Manually deleting it in the chrome browser removes the cookie from Postman.
In your chrome browser go to chrome://settings/cookies
Find the cookie and delete it
Edit:
As per Max890 comment below (in my version of Google Chrome (ver 63)) this is now
chrome://settings/content/cookies
Then go to "See all cookies and site data"
Update for Google Chrome 79.0.3945.88
chrome://settings/siteData?search=cookies
As Dirk said, the function you are after is 'read.csv' or one of the other read.table variants. Given your sample data above, I think you will want to do something like this:
setwd("c:/random/directory")
df <- read.csv("myRandomFile.csv", header=TRUE)
All we did in the above was set the directory to where your .csv file is and then read the .csv into a dataframe named df. You can check that the data loaded properly by checking the structure of the object with:
str(df)
Assuming the data loaded properly, you can think go on to perform any number of statistical methods with the data in your data frame. I think summary(df)
would be a good place to start. Learning how to use the help in R will be immensely useful, and a quick read through the help on CRAN will save you lots of time in the future: http://cran.r-project.org/
Here's a nice reusable hook amended from https://swizec.com/blog/usedimensions-a-react-hook-to-measure-dom-nodes:
import { useState, useCallback, useEffect } from 'react';
function getDimensionObject(node) {
const rect = node.getBoundingClientRect();
return {
width: rect.width,
height: rect.height,
top: 'x' in rect ? rect.x : rect.top,
left: 'y' in rect ? rect.y : rect.left,
x: 'x' in rect ? rect.x : rect.left,
y: 'y' in rect ? rect.y : rect.top,
right: rect.right,
bottom: rect.bottom
};
}
export function useDimensions(data = null, liveMeasure = true) {
const [dimensions, setDimensions] = useState({});
const [node, setNode] = useState(null);
const ref = useCallback(node => {
setNode(node);
}, []);
useEffect(() => {
if (node) {
const measure = () =>
window.requestAnimationFrame(() =>
setDimensions(getDimensionObject(node))
);
measure();
if (liveMeasure) {
window.addEventListener('resize', measure);
window.addEventListener('scroll', measure);
return () => {
window.removeEventListener('resize', measure);
window.removeEventListener('scroll', measure);
};
}
}
}, [node, data]);
return [ref, dimensions, node];
}
To implement:
import { useDimensions } from '../hooks';
// Include data if you want updated dimensions based on a change.
const MyComponent = ({ data }) => {
const [
ref,
{ height, width, top, left, x, y, right, bottom }
] = useDimensions(data);
console.log({ height, width, top, left, x, y, right, bottom });
return (
<div ref={ref}>
{data.map(d => (
<h2>{d.title}</h2>
))}
</div>
);
};
Please try it:
if(isset($_GET['id']) && !empty($_GET['id'])){
echo $_GET["id"];
}
The namespace name http://www.w3.org/1999/xhtml
is intended for use in various specifications such as:
Recommendations:
XHTML™ 1.0: The Extensible HyperText Markup Language
XHTML Modularization
XHTML 1.1
XHTML Basic
XHTML Print
XHTML+RDFa
Check here for more detail
In my case this was because a file named ociw32.dll had been placed in c:\windows\system32. This is however only allowed to exist in c:\oracle\11.2.0.3\bin.
Deleting the file from system32, which had been placed there by an installation of Crystal Reports, fixed this issue
In Layman terms, you need to include external js file in your HTML file & thereafter you could directly call your JS method written in an external js file from HTML page. Follow the code snippet for insight:-
caller.html
<script type="text/javascript" src="external.js"></script>
<input type="button" onclick="letMeCallYou()" value="run external javascript">
external.js
function letMeCallYou()
{
alert("Bazinga!!! you called letMeCallYou")
}
You can use any
:
print any(df.column == 07311954)
True #true if it contains the number, false otherwise
If you rather want to see how many times '07311954' occurs in a column you can use:
df.column[df.column == 07311954].count()
For jacoco: use this properties:
-Dsonar.jacoco.excludes=**/*View.java
Tackling this task, I'd first find the number of decimal places in x
, then round y
accordingly. I'd use:
y.toFixed(x.toString().split(".")[1].length);
It should convert x
to a string, split it over the decimal point, find the length of the right part, and then y.toFixed(length)
should round y
based on that length.
.c : c file (where the real action is, in general)
.h : header file (to be included with a preprocessor #include
directive). Contains stuff that is normally deemed to be shared with other parts of your code, like function prototypes, #define'd stuff, extern declaration for global variables (oh, the horror) and the like.
Technically, you could put everything in a single file. A whole C program. million of lines. But we humans tend to organize things. So you create different C files, each one containing particular functions. That's all nice and clean. Then suddenly you realize that a declaration you have into a given C file should exist also in another C file. So you would duplicate them. The best is therefore to extract the declaration and put it into a common file, which is the .h
For example, in the cs50.h you find what are called "forward declarations" of your functions. A forward declaration is a quick way to tell the compiler how a function should be called (e.g. what input params) and what it returns, so it can perform proper checking (for example if you call a function with the wrong number of parameters, it will complain).
Another example. Suppose you write a .c file containing a function performing regular expression matching. You want your function to accept the regular expression, the string to match, and a parameter that tells if the comparison has to be case insensitive.
in the .c you will therefore put
bool matches(string regexp, string s, int flags) { the code }
Now, assume you want to pass the following flags:
0: if the search is case sensitive
1: if the search is case insensitive
And you want to keep yourself open to new flags, so you did not put a boolean. playing with numbers is hard, so you define useful names for these flags
#define MATCH_CASE_SENSITIVE 0
#define MATCH_CASE_INSENSITIVE 1
This info goes into the .h, because if any program wants to use these labels, it has no way of knowing them unless you include the info. Of course you can put them in the .c, but then you would have to include the .c code (whole!) which is a waste of time and a source of trouble.
You can give to_s
a base other than 10:
10.to_s(16) #=> "a"
Note that in ruby 2.4 FixNum
and BigNum
were unified in the Integer
class.
If you are using an older ruby check the documentation of FixNum#to_s
and BigNum#to_s
Installing XCode requires:
To install g++ *WITHOUT* having to download the MASSIVE 4.7G xCode install, try this package:
https://github.com/kennethreitz/osx-gcc-installer
The DMG files linked on that page are ~270M and much quicker to install. This was perfect for me, getting homebrew up and running with a minimum of hassle.
The github project itself is basically a script that repackages just the critical chunks of xCode for distribution. In order to run that script and build the DMG files, you'd need to already have an XCode install, which would kind of defeat the point, so the pre-built DMG files are hosted on the project page.
while(obj != null){
// statements.
}
Are you sure your processor supports Intel Virtualization (VT-x) or AMD Virtualization (AMD-V)?
Here you can find Hardware-Assisted Virtualization Detection Tool ( http://www.microsoft.com/downloads/en/details.aspx?FamilyID=0ee2a17f-8538-4619-8d1c-05d27e11adb2&displaylang=en) which will tell you if your hardware supports VT-x.
Alternatively you can find your processor here: http://ark.intel.com/Default.aspx. All AMD processors since 2006 supports Virtualization.
Drop all default contstraints in a database - safe for nvarchar(max) threshold.
/* WARNING: THE SAMPLE BELOW; DROPS ALL THE DEFAULT CONSTRAINTS IN A DATABASE */
/* MAY 03, 2013 - BY WISEROOT */
declare @table_name nvarchar(128)
declare @column_name nvarchar(128)
declare @df_name nvarchar(128)
declare @cmd nvarchar(128)
declare table_names cursor for
SELECT t.name TableName, c.name ColumnName
FROM sys.columns c INNER JOIN
sys.tables t ON c.object_id = t.object_id INNER JOIN
sys.schemas s ON t.schema_id = s.schema_id
ORDER BY T.name, c.name
open table_names
fetch next from table_names into @table_name , @column_name
while @@fetch_status = 0
BEGIN
if exists (SELECT top(1) d.name from sys.tables t join sys.default_constraints d on d.parent_object_id = t.object_id join sys.columns c on c.object_id = t.object_id and c.column_id = d.parent_column_id where t.name = @table_name and c.name = @column_name)
BEGIN
SET @df_name = (SELECT top(1) d.name from sys.tables t join sys.default_constraints d on d.parent_object_id = t.object_id join sys.columns c on c.object_id = t.object_id and c.column_id = d.parent_column_id where t.name = @table_name and c.name = @column_name)
select @cmd = 'ALTER TABLE [' + @table_name + '] DROP CONSTRAINT [' + @df_name + ']'
print @cmd
EXEC sp_executeSQL @cmd;
END
fetch next from table_names into @table_name , @column_name
END
close table_names
deallocate table_names
A static variable is a special variable that you can use in a function, and it saves the data between calls, and it does not delete it between calls. For example:
void func(void) {
static int count; // If you don't declare its value, it is initialized with zero
printf("%d, ", count);
++count;
}
int main(void) {
while(true) {
func();
}
return 0;
}
The output:
0, 1, 2, 3, 4, 5, ...
It's an abstract reference value to a resource, often memory or an open file, or a pipe.
Properly, in Windows, (and generally in computing) a handle is an abstraction which hides a real memory address from the API user, allowing the system to reorganize physical memory transparently to the program. Resolving a handle into a pointer locks the memory, and releasing the handle invalidates the pointer. In this case think of it as an index into a table of pointers... you use the index for the system API calls, and the system can change the pointer in the table at will.
Alternatively a real pointer may be given as the handle when the API writer intends that the user of the API be insulated from the specifics of what the address returned points to; in this case it must be considered that what the handle points to may change at any time (from API version to version or even from call to call of the API that returns the handle) - the handle should therefore be treated as simply an opaque value meaningful only to the API.
I should add that in any modern operating system, even the so-called "real pointers" are still opaque handles into the virtual memory space of the process, which enables the O/S to manage and rearrange memory without invalidating the pointers within the process.
You need to put the font files in assets folder (may be a fonts sub-folder within assets) and refer to it in the styles:
@font-face {
font-family: lato;
src: url(assets/font/Lato.otf) format("opentype");
}
Once done, you can apply this font any where like:
* {
box-sizing: border-box;
margin: 0;
padding: 0;
font-family: 'lato', 'arial', sans-serif;
}
You can put the @font-face
definition in your global styles.css
or styles.scss
and you would be able to refer to the font anywhere - even in your component specific CSS/SCSS. styles.css
or styles.scss
is already defined in angular-cli.json
. Or, if you want you can create a separate CSS/SCSS file and declare it in angular-cli.json along with the styles.css
or styles.scss
like:
"styles": [
"styles.css",
"fonts.css"
],
A simple one line code to check whether the string is palindrome or not:
function palindrome (str) {_x000D_
_x000D_
return str === str.split("").reverse().join("");_x000D_
_x000D_
}
_x000D_
<!-- Change the argument to check for other strings -->_x000D_
<button type="button" onclick="alert(palindrome('naman'));">Click Me<utton>
_x000D_
The above function will return true if the string is palindrome. Else, it will return false.
Hibernate queries are case sensitive with property names (because they end up relying on getter/setter methods on the @Entity
).
Make sure you refer to the property as fileName
in the Criteria query, not filename
.
Specifically, Hibernate will call the getter method of the filename
property when executing that Criteria query, so it will look for a method called getFilename()
. But the property is called FileName
and the getter getFileName()
.
So, change the projection like so:
criteria.setProjection(Projections.property("fileName"));
Usually when you get this problem, it happens because a script is trying to reference an element that doesn't exist yet while the page is loading.
As richie mentioned: "The HTML parser will parse the HTML content from top to bottom..."
So you can add your JavaScript references to the bottom of the HTML file. This will not only improve performance; it will also ensure that all elements referenced in your script files have already been loaded by the HTML parser.
So you could have something like this:
<html>
<head>
<!-- Style sheet references and CSS definitions -->
</head>
<body>
<!-- HTML markup and other page content -->
<!-- JavaScript references. You could include jQuery here as well and do all your scripting here. -->
</body>
</html>
Wanted to use /dev/urandom without dd and od
function roll() { local modulus=${1:-6}; echo $(( 1 + 0x$(env LC_CTYPE=C tr -dc '0-9a-fA-F' < /dev/urandom | head -c5 ) % $modulus )); }
Testing
$ roll
5
$ roll 12
12
Just how random is it?
$ (echo "count roll percentage"; i=0; while [ $i -lt 10000 ]; do roll; i=$((i+1)); done | sort | uniq -c | awk '{print $0,($1/10000*100)"%"}') | column -t
count roll percentage
1625 1 16.25%
1665 2 16.65%
1646 3 16.46%
1720 4 17.2%
1694 5 16.94%
1650 6 16.5%
I had the same problem and none of suggestions helped. But I found an interesting reason for that, on a physical device, Galaxy Tab.
When USB storage is on, external storage read and write permissions don't have any effect. Just turn off USB storage, and with the correct permissions, you'll have the problem solved.
You could use getdate() in a default as this SO question's accepted answer shows. This way you don't provide the date, you just insert the rest and that date is the default value for the column.
You could also provide it in the values list of your insert and do it manually if you wish.
The systemd
way to do this is to have the process "talk back" when it's setup somehow, like by opening a socket or sending a notification (or a parent script exiting). Which is of course not always straight-forward especially with third party stuff :|
You might be able to do something inline like
ExecStart=/bin/bash -c '/bin/start_cassandra &; do_bash_loop_waiting_for_it_to_come_up_here'
or a script that does the same. Or put do_bash_loop_waiting_for_it_to_come_up_here
in an ExecStartPost
Or create a helper .service that waits for it to come up, so the helper service depends on cassandra, and waits for it to come up, then your other process can depend on the helper service.
(May want to increase TimeoutStartSec from the default 90s as well)
Just in case, someone out there having same issue but changing file permission doesn't solve the issue, add this line to your config.inc.php
file
<?php
// other config goes here . . .
$cfg['CheckConfigurationPermissions'] = false;
And you're good to go.
In my case, I'm using windows 10 WSL with phpmyadmin installed on D:
drive. There's no way to (for now) change file permission on local disk through WSL unless your installation directory is inside WSL filesystem it-self. There's updates according to this issue, but still on insider build.
Cheers.
<img title="<a href="javascript:alert('hello world')">The Link</a>" />
Super-brief summary from what Professor Brasilford explains in this video.
Turing Complete ? do anything that a Turing Machine can do.
It has conditional branching (i.e. "if statement"). Also, implies "go to" and thus permitting loop.
It has arbitrary amount of memory (e.g. long enough tape) that the program needs.
According to others said, you cannot instantiate from abstract class. but it exist 2 way to use it. 1. make another non-abstact class that extends from abstract class. So you can instantiate from new class and use the attributes and methods in abstract class.
public class MyCustomClass extends YourAbstractClass {
/// attributes, methods ,...
}
This probably works for a lot of things but it's not enough for Maven and certainly not for the maven compiler plugin.
Check Mike's answer to his own question here: stackoverflow question 24705877
This solved the issue for me both command line AND within eclipse.
Also, @LinGao answer to stackoverflow question 2503658 and the use of the $JAVACMD variable might help but I haven't tested it myself.
Brace expansion doesn't work, but *
, ?
and []
do. If you set shopt -s extglob
then you can also use extended pattern matching:
?()
- zero or one occurrences of pattern*()
- zero or more occurrences of pattern+()
- one or more occurrences of pattern@()
- one occurrence of pattern!()
- anything except the patternHere's an example:
shopt -s extglob
for arg in apple be cd meet o mississippi
do
# call functions based on arguments
case "$arg" in
a* ) foo;; # matches anything starting with "a"
b? ) bar;; # matches any two-character string starting with "b"
c[de] ) baz;; # matches "cd" or "ce"
me?(e)t ) qux;; # matches "met" or "meet"
@(a|e|i|o|u) ) fuzz;; # matches one vowel
m+(iss)?(ippi) ) fizz;; # matches "miss" or "mississippi" or others
* ) bazinga;; # catchall, matches anything not matched above
esac
done
Because you tried to access an element in a collection, using a numeric index that exceeds the collection's boundaries.
The first element in a collection is generally located at index 0
. The last element is at index n-1
, where n
is the Size
of the collection (the number of elements it contains). If you attempt to use a negative number as an index, or a number that is larger than Size-1
, you're going to get an error.
When you declare an array like this:
var array = new int[6]
The first and last elements in the array are
var firstElement = array[0];
var lastElement = array[5];
So when you write:
var element = array[5];
you are retrieving the sixth element in the array, not the fifth one.
Typically, you would loop over an array like this:
for (int index = 0; index < array.Length; index++)
{
Console.WriteLine(array[index]);
}
This works, because the loop starts at zero, and ends at Length-1
because index
is no longer less than Length
.
This, however, will throw an exception:
for (int index = 0; index <= array.Length; index++)
{
Console.WriteLine(array[index]);
}
Notice the <=
there? index
will now be out of range in the last loop iteration, because the loop thinks that Length
is a valid index, but it is not.
Lists work the same way, except that you generally use Count
instead of Length
. They still start at zero, and end at Count - 1
.
for (int index = 0; i < list.Count; index++)
{
Console.WriteLine(list[index]);
}
However, you can also iterate through a list using foreach
, avoiding the whole problem of indexing entirely:
foreach (var element in list)
{
Console.WriteLine(element.ToString());
}
You cannot index an element that hasn't been added to a collection yet.
var list = new List<string>();
list.Add("Zero");
list.Add("One");
list.Add("Two");
Console.WriteLine(list[3]); // Throws exception.
In my case, I copied one of the projects (say 'Project1') from the workspace and pasted it to the same workspace. After that I modified the name of the pasted project (say to 'Project2'). I could not see it in the repository.
The main reason was .project
file from the new project still had:
<name>Project1</name>
instead of <name>Project2</name>
.
So, I did following things in order to get the issue fixed:
.project
file to have <name>Project2</name>
It worked for me.
If you want to get values in Javascript on frontend, you can use the native way to do it by using :
document.getElementsByName("movie")[0].value;
Where "movie"
is the name of your input
<input type="text" name="movie">
If you want to get it on angular.js controller, you can use;
$scope.movie
you can use the shell (bash/ksh).
$ var="12345678abc"
$ replace="test"
$ echo ${var//12345678/$replace}
testabc
A rather roundabout way, just for completeness:
for /f "delims=" %i in ('type CON') do set inp=%i
Of course that requires ^Z as a terminator, and so the Johannes answer is better in all practical ways.
Set a zero height table footer view (perhaps in your viewDidLoad
method), like so:
Swift:
tableView.tableFooterView = UIView()
Objective-C:
tableView.tableFooterView = [[UIView alloc] initWithFrame:CGRectZero];
Because the table thinks there is a footer to show, it doesn't display any cells beyond those you explicitly asked for.
Interface builder pro-tip:
If you are using a xib/Storyboard, you can just drag a UIView (with height 0pt) onto the bottom of the UITableView.
If your JDK version is right. Another reason that may cause this error is that your Android Studio is in a low version, but your Gradle version is too high. Upgrade your IDE to a newer version
may help this.
glBegin(GL_POLYGON); // Middle circle
double radius = 0.2;
double ori_x = 0.0; // the origin or center of circle
double ori_y = 0.0;
for (int i = 0; i <= 300; i++) {
double angle = 2 * PI * i / 300;
double x = cos(angle) * radius;
double y = sin(angle) * radius;
glVertex2d(ori_x + x, ori_y + y);
}
glEnd();
you should change cr_date(str) to datetime object then you 'll change the date to the specific format:
cr_date = '2013-10-31 18:23:29.000227'
cr_date = datetime.datetime.strptime(cr_date, '%Y-%m-%d %H:%M:%S.%f')
cr_date = cr_date.strftime("%m/%d/%Y")
Guava has a method to do this for you: double[] Doubles.toArray(Collection<Double>)
This isn't necessarily going to be any faster than just looping through the Collection
and adding each Double
object to the array, but it's a lot less for you to write.
Invokes any method despite its protection level on object instance. Enjoy!
public static object InvokeMethod(object obj, string methodName, params object[] methodParams)
{
var methodParamTypes = methodParams?.Select(p => p.GetType()).ToArray() ?? new Type[] { };
var bindingFlags = BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance | BindingFlags.Static;
MethodInfo method = null;
var type = obj.GetType();
while (method == null && type != null)
{
method = type.GetMethod(methodName, bindingFlags, Type.DefaultBinder, methodParamTypes, null);
type = type.BaseType;
}
return method?.Invoke(obj, methodParams);
}
I think you would like to learn ajax
first, try this: Ajax Tutorial
If you want to know how ajax works, it is not a good way to use jQuery directly. I support to learn the native way to send a ajax request to the server, see something about XMLHttpRequest
:
var xhr = new XMLHttpReuqest();
xhr.open("GET", "http://some.com");
xhr.onreadystatechange = handler; // do something here...
xhr.send();
You can also use REPLACE()
:
UPDATE Table
SET Column = REPLACE(Column, 'Test123', 'Test')
I was compiling my application targeting any CPU and main problem turned out that adobe reader was installed older v10.x needs to upgrade v11.x, this is the way how I get to resolve this issue.
Assuming you are using Eclipse, on a MAC you can:
Eclipse.app
Eclipse -> Preferences
Java -> Installed JREs
Add...
buttonMacOS X VM
as the JRE type. Press Next./Library/Java/JavaVirtualMachines/1.7.0.jdk/Contents/Home
JDK 1.7
. Click Finish.File -> New -> Java Project
.Use default JRE (currently JDK 1.7)
Hope this helps
It failed because you used ajax="false"
. This fires a full synchronous request which in turn causes a full page reload, causing the oncomplete
to be never fired (note that all other ajax-related attributes like process
, onstart
, onsuccess
, onerror
and update
are also never fired).
That it worked when you removed actionListener
is also impossible. It should have failed the same way. Perhaps you also removed ajax="false"
along it without actually understanding what you were doing. Removing ajax="false"
should indeed achieve the desired requirement.
Also is it possible to execute actionlistener and oncomplete simultaneously?
No. The script can only be fired before or after the action listener. You can use onclick
to fire the script at the moment of the click. You can use onstart
to fire the script at the moment the ajax request is about to be sent. But they will never exactly simultaneously be fired. The sequence is as follows:
onclick
JavaScript code is executedprocess
and current HTML DOM treeonstart
JavaScript code is executedprocess
actionListener
JSF backing bean method is executedaction
JSF backing bean method is executedupdate
and current JSF component treeonsuccess
JavaScript code is executedonerror
JavaScript code is executedupdate
based on ajax response and current HTML DOM treeoncomplete
JavaScript code is executedNote that the update
is performed after actionListener
, so if you were using onclick
or onstart
to show the dialog, then it may still show old content instead of updated content, which is poor for user experience. You'd then better use oncomplete
instead to show the dialog. Also note that you'd better use action
instead of actionListener
when you intend to execute a business action.
Try Ctrl + F5 in Visual Studio to run your program, this will add a pause with "Press any key to continue..." automatically without any Console.Readline() or ReadKey() functions.
Unfortunately, all of these solutions rely on specifying a fixed width. Since the tables are generated dynamically (statistical results pulled from a database), the width can not be known in advance.
The desired result can be achieved by wrapping the two tables within another table:
<table align="center"><tr><td>
//code for table on the left
</td><td>
//code for table on the right
</td></tr></table>
and the result is a perfectly centered pair of tables that responds fluidly to arbitrary widths and page (re)sizes (and the align="center" table attribute could be hoisted out into an outer div with margin autos).
I conclude that there are some layouts that can only be achieved with tables.
I'm not very happy with any of the options so I ended up requesting the file in Excel 97 formate. The POI works great for that. Thanks everyone for the help.
I have similar issue faced and solve with following solution: my date format is: 'Fri Dec 11 2020 05:00:00 GMT+0500 (Pakistan Standard Time)'
let currentDate = moment(new Date('Fri Dec 11 2020 05:00:00 GMT+0500 (Pakistan Standard Time)').format('DD-MM-YYYY'); // 'Fri Dec 11 2020 05:00:00 GMT+0500 (Pakistan Standard Time)'
let output=(moment(currentDate).isSameOrAfter('07-12-2020'));
You can stick optional whitespace characters \s*
in between every other character in your regex. Although granted, it will get a bit lengthy.
/cats/
-> /c\s*a\s*t\s*s/
If you have control over the structure of the list, the most pythonic thing to do would probably be to change it from:
l=[1,2,3,4]
to:
l=[(1,2),(3,4)]
Then, your loop would be:
for i,j in l:
print i, j
You did syntax declaration error, use proper setTimeout declaration
message:() => {
setTimeout(() => {this.setState({opened:false})},3000);
return 'Thanks for your time, have a nice day !
}
This answer expounds on John Black's helpful answer, so I will repeat some of his answer content in my answer.
The easiest way to resize a marker seems to be leaving argument 2, 3, and 4 null and scaling the size in argument 5.
var pinIcon = new google.maps.MarkerImage(
"http://chart.apis.google.com/chart?chst=d_map_pin_letter&chld=%E2%80%A2|FFFF00",
null, /* size is determined at runtime */
null, /* origin is 0,0 */
null, /* anchor is bottom center of the scaled image */
new google.maps.Size(42, 68)
);
As an aside, this answer to a similar question asserts that defining marker size in the 2nd argument is better than scaling in the 5th argument. I don't know if this is true.
Leaving arguments 2-4 null works great for the default google pin image, but you must set an anchor explicitly for the default google pin shadow image, or it will look like this:
The bottom center of the pin image happens to be collocated with the tip of the pin when you view the graphic on the map. This is important, because the marker's position property (marker's LatLng position on the map) will automatically be collocated with the visual tip of the pin when you leave the anchor (4th argument) null
. In other words, leaving the anchor null ensures the tip points where it is supposed to point.
However, the tip of the shadow is not located at the bottom center. So you need to set the 4th argument explicitly to offset the tip of the pin shadow so the shadow's tip will be colocated with the pin image's tip.
By experimenting I found the tip of the shadow should be set like this: x is 1/3 of size and y is 100% of size.
var pinShadow = new google.maps.MarkerImage(
"http://chart.apis.google.com/chart?chst=d_map_pin_shadow",
null,
null,
/* Offset x axis 33% of overall size, Offset y axis 100% of overall size */
new google.maps.Point(40, 110),
new google.maps.Size(120, 110));
to give this:
Basically the answer from Jani Hartikainen is right! I upvoted his answer. What was missing on my system (based on Ubuntu 15.04) was to enable PDO Extension in my php.ini
extension=pdo.so
extension=pdo_mysql.so
restart the webserver (e.g. with "sudo service apache2 restart") -> every fine :-)
To find where your current active php.ini file is located you can use phpinfo() or some other hints from here: https://www.ostraining.com/blog/coding/phpini-file/
It's just one line with underscore.js debounce function:
$('#my-input-box').keyup(_.debounce(doSomething , 500));
This basically says doSomething 500 milliseconds after I stop typing.
For more info: http://underscorejs.org/#debounce
In Python 3, print
became a function. This means that you need to include parenthesis now like mentioned below:
print("Hello World")
Or simply use the JFreechart library - http://www.jfree.org/jfreechart/ .
For anyone running MySQL on Amazon RDS service, this change is done via parameter groups. You need to create a new PG or use an existing one (other than the default, which is read-only).
You should search for the max_allowed_packet
parameter, change its value, and then hit save.
Back in your MySQL instance, if you created a new PG, you should attach the PG to your instance (you may need a reboot). If you changed a PG that was already attached to your instance, changes will be applied without reboot, to all your instances that have that PG attached.
You can center a view as a percentage of the screen size.
This example uses 50% of width and height:
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="#FF0000"
android:orientation="vertical"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHeight_percent=".5"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintWidth_percent=".5"></LinearLayout>
</android.support.constraint.ConstraintLayout>
This was done using ConstraintLayout version 1.1.3. Don't forget to add it to your dependencies in the gradle, and increase the version if there is a new version out there:
dependencies {
...
implementation 'com.android.support.constraint:constraint-layout:1.1.3'
}
These errors mean that the R code you are trying to run or source is not syntactically correct. That is, you have a typo.
To fix the problem, read the error message carefully. The code provided in the error message shows where R thinks that the problem is. Find that line in your original code, and look for the typo.
Prophylactic measures to prevent you getting the error again
The best way to avoid syntactic errors is to write stylish code. That way, when you mistype things, the problem will be easier to spot. There are many R style guides linked from the SO R tag info page. You can also use the formatR
package to automatically format your code into something more readable. In RStudio, the keyboard shortcut CTRL + SHIFT + A will reformat your code.
Consider using an IDE or text editor that highlights matching parentheses and braces, and shows strings and numbers in different colours.
Common syntactic mistakes that generate these errors
Mismatched parentheses, braces or brackets
If you have nested parentheses, braces or brackets it is very easy to close them one too many or too few times.
{}}
## Error: unexpected '}' in "{}}"
{{}} # OK
Missing *
when doing multiplication
This is a common mistake by mathematicians.
5x
Error: unexpected symbol in "5x"
5*x # OK
Not wrapping if, for, or return values in parentheses
This is a common mistake by MATLAB users. In R, if
, for
, return
, etc., are functions, so you need to wrap their contents in parentheses.
if x > 0 {}
## Error: unexpected symbol in "if x"
if(x > 0) {} # OK
Not using multiple lines for code
Trying to write multiple expressions on a single line, without separating them by semicolons causes R to fail, as well as making your code harder to read.
x + 2 y * 3
## Error: unexpected symbol in "x + 2 y"
x + 2; y * 3 # OK
else
starting on a new line
In an if
-else
statement, the keyword else
must appear on the same line as the end of the if
block.
if(TRUE) 1
else 2
## Error: unexpected 'else' in "else"
if(TRUE) 1 else 2 # OK
if(TRUE)
{
1
} else # also OK
{
2
}
=
instead of ==
=
is used for assignment and giving values to function arguments. ==
tests two values for equality.
if(x = 0) {}
## Error: unexpected '=' in "if(x ="
if(x == 0) {} # OK
Missing commas between arguments
When calling a function, each argument must be separated by a comma.
c(1 2)
## Error: unexpected numeric constant in "c(1 2"
c(1, 2) # OK
Not quoting file paths
File paths are just strings. They need to be wrapped in double or single quotes.
path.expand(~)
## Error: unexpected ')' in "path.expand(~)"
path.expand("~") # OK
Quotes inside strings
This is a common problem when trying to pass quoted values to the shell via system
, or creating quoted xPath
or sql
queries.
Double quotes inside a double quoted string need to be escaped. Likewise, single quotes inside a single quoted string need to be escaped. Alternatively, you can use single quotes inside a double quoted string without escaping, and vice versa.
"x"y"
## Error: unexpected symbol in ""x"y"
"x\"y" # OK
'x"y' # OK
Using curly quotes
So-called "smart" quotes are not so smart for R programming.
path.expand(“~”)
## Error: unexpected input in "path.expand(“"
path.expand("~") # OK
Using non-standard variable names without backquotes
?make.names
describes what constitutes a valid variable name. If you create a non-valid variable name (using assign
, perhaps), then you need to access it with backquotes,
assign("x y", 0)
x y
## Error: unexpected symbol in "x y"
`x y` # OK
This also applies to column names in data frames created with check.names = FALSE
.
dfr <- data.frame("x y" = 1:5, check.names = FALSE)
dfr$x y
## Error: unexpected symbol in "dfr$x y"
dfr[,"x y"] # OK
dfr$`x y` # also OK
It also applies when passing operators and other special values to functions. For example, looking up help on %in%
.
?%in%
## Error: unexpected SPECIAL in "?%in%"
?`%in%` # OK
Sourcing non-R code
The source
function runs R code from a file. It will break if you try to use it to read in your data. Probably you want read.table
.
source(textConnection("x y"))
## Error in source(textConnection("x y")) :
## textConnection("x y"):1:3: unexpected symbol
## 1: x y
## ^
Corrupted RStudio desktop file
RStudio users have reported erroneous source errors due to a corrupted .rstudio-desktop
file. These reports only occurred around March 2014, so it is possibly an issue with a specific version of the IDE. RStudio can be reset using the instructions on the support page.
Using expression without paste in mathematical plot annotations
When trying to create mathematical labels or titles in plots, the expression created must be a syntactically valid mathematical expression as described on the ?plotmath
page. Otherwise the contents should be contained inside a call to paste.
plot(rnorm(10), ylab = expression(alpha ^ *)))
## Error: unexpected '*' in "plot(rnorm(10), ylab = expression(alpha ^ *"
plot(rnorm(10), ylab = expression(paste(alpha ^ phantom(0), "*"))) # OK
Maybe you can use the Navigator function like this Navigator.of(context).pop();
There are a lot of great responses already posted here. Just attempting to solve the problem with a different perspective. Its just my 2 cents, please correct me if I am wrong somewhere.
Throws clause in FunctionalInterface is not a good idea
I think this is probably not a good idea to enforce throws IOException because of following reasons
This looks to me like an anti-pattern to Stream/Lambda. The whole idea is that the caller will decide what code to provide and how to handle the exception. In many scenarios, the IOException might not be applicable for the client. For example, if the client is getting value from cache/memory instead of performing actual I/O.
Also, the exceptions handling in streams becomes really hideous. For example, here is my code will look like if I use your API
acceptMyMethod(s -> {
try {
Integer i = doSomeOperation(s);
return i;
} catch (IOException e) {
// try catch block because of throws clause
// in functional method, even though doSomeOperation
// might not be throwing any exception at all.
e.printStackTrace();
}
return null;
});
Ugly isn't it? Moreover, as I mentioned in my first point, that the doSomeOperation method may or may not be throwing IOException (depending on the implementation of the client/caller), but because of the throws clause in your FunctionalInterface method, I always have to write the try-catch.
What do I do if I really know this API throws IOException
Then probably we are confusing FunctionalInterface with typical Interfaces. If you know this API will throw IOException, then most probably you also know some default/abstract behavior as well. I think you should define an interface and deploy your library (with default/abstract implementation) as follows
public interface MyAmazingAPI {
Integer myMethod(String s) throws IOException;
}
But, the try-catch problem still exists for the client. If I use your API in stream, I still need to handle IOException in hideous try-catch block.
Provide a default stream-friendly API as follows
public interface MyAmazingAPI {
Integer myMethod(String s) throws IOException;
default Optional<Integer> myMethod(String s, Consumer<? super Exception> exceptionConsumer) {
try {
return Optional.ofNullable(this.myMethod(s));
} catch (Exception e) {
if (exceptionConsumer != null) {
exceptionConsumer.accept(e);
} else {
e.printStackTrace();
}
}
return Optional.empty();
}
}
The default method takes the consumer object as argument, which will be responsible to handle the exception. Now, from client's point of view, the code will look like this
strStream.map(str -> amazingAPIs.myMethod(str, Exception::printStackTrace))
.filter(Optional::isPresent)
.map(Optional::get).collect(toList());
Nice right? Of course, logger or other handling logic could be used instead of Exception::printStackTrace.
You can also expose a method similar to https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CompletableFuture.html#exceptionally-java.util.function.Function- . Meaning that you can expose another method, which will contain the exception from previous method call. The disadvantage is that you are now making your APIs stateful, which means that you need to handle thread-safety and which will be eventually become a performance hit. Just an option to consider though.
You should install the PHP 5 library for Apache.
For Debian and Ubuntu:
apt-get install libapache2-mod-php5
And restart the Apache:
service apache2 restart
You can get the protocol, host, and port using this:
window.location.origin
Chrome | Edge | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
---|---|---|---|---|---|
(Yes) | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |
30.0.1599.101 (possibly earlier) | ? | 21.0 (21.0) | 11 | ? | 7 (possibly earlier, see webkit bug 46558) |
Android | Edge | Firefox Mobile (Gecko) | IE Phone | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|
(Yes) | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |
30.0.1599.101 (possibly earlier) | ? | 21.0 (21.0) | ? | ? | 7 (possibly earlier, see webkit bug 46558) |
All browser compatibility is from Mozilla Developer Network
For your question as asked
Columns(3).Insert
Range("c1:c4") = Application.Transpose(Array("Loc", "uk", "us", "nj"))
If you had a way of automatically looking up the data (ie matching uk against employer id) then you could do that in VBA
I got the same cryptic error message from Rails 4.1, Ruby 2.3.3 in a recent project, stacktrace originating in layout application.html.haml
After a wild goose chase, the culprit was a UTF-8 character which recently had been added to the footer of all pages. For some weird reason the error would only show up intermittently.
Replacing the UTF-8 character with the corresponding HTML escape sequence &#xHHHH;
solved the issue.
I hope this saves other people some time in the future..
You can also do it like this:
BigDecimal A = new BigDecimal("10000000000");
BigDecimal B = new BigDecimal("20000000000");
BigDecimal C = new BigDecimal("30000000000");
BigDecimal resultSum = (A).add(B).add(C);
System.out.println("A+B+C= " + resultSum);
Prints:
A+B+C= 60000000000
Also internationalization.
I fooled around with this some a while back. Did this in my model:
[Display(Name = "XXX", ResourceType = typeof(Labels))]
I had a separate class library for all the resources, so I had Labels.resx, Labels.culture.resx, etc.
In there I had key = XXX, value = "meaningful string in that culture."
<?php echo "<script>console.log({$yourVariable})</script>"; ?>
One hack i use if the revision i want to edit is not so old:
Let's say you're at rev 500 and you want to edit 497.
hg export -o rev497 497
hg export -o rev498 498
hg export -o rev499 499
hg export -o rev500 500
Edit rev497 file and change the message. (It's after first lines preceded by "#")
hg import rev497
hg import rev498
hg import rev499
hg import rev500
The best and tested solution is to put the following small snippet which will collapse the accordion tab which is already open when you load. In my case the last sixth tab was open so I made it collapsed on page load.
$(document).ready(){
$('#collapseSix').collapse("hide");
}
DLLs (Dynamic Link Libraries) contain resources used by one or more applications or services. They can contain classes, icons, strings, objects, interfaces, and pretty much anything a developer would need to store except a UI.
module Enumerable
def map_with_index(&block)
i = 0
self.map { |val|
val = block.call(val, i)
i += 1
val
}
end
end
["foo", "bar"].map_with_index {|item, index| [item, index] } => [["foo", 0], ["bar", 1]]
I was able to connect from SSMS using "(LocalDb)\Projects". That's the way it appears in VS2012 as well.
Without jQuery : DEMO
<div id="parentDiv" onclick="alert('parentDiv');">
<div id="childDiv" onclick="alert('childDiv');event.cancelBubble=true;">
AAA
</div>
</div>
The BadImageFormatException on an application running on IIS (not running from VS, since visual studio fixes the problem by using the build for "Any CPU") can be caused by the following:
The site is one a server that is x64 and the Application Pool's default setting for Enable 32-Bit Applications was False. and you have 32-bit assemblies
On the level of Visual Studio, the fix is:
SigSegV means a signal for memory access violation, trying to read or write from/to a memory area that your process does not have access to. These are not C or C++ exceptions and you can’t catch signals. It’s possible indeed to write a signal handler that ignores the problem and allows continued execution of your unstable program in undefined state, but it should be obvious that this is a very bad idea.
Most of the time this is because of a bug in the program. The memory address given can help debug what’s the problem (if it’s close to zero then it’s likely a null pointer dereference, if the address is something like 0xadcedfe then it’s intentional safeguard or a debug check, etc.)
One way of “catching” the signal is to run your stuff in a separate child process that can then abruptly terminate without taking your main process down with it. Finding the root cause and fixing it is obviously preferred over workarounds like this.
Referncing from
This Thread
Constant Pointers
Lets first understand what a constant pointer is. A constant pointer is a pointer that cannot change the address its holding. In other words, we can say that once a constant pointer points to a variable then it cannot point to any other variable.
A constant pointer is declared as follows :
<type of pointer> * const <name of pointer>
An example declaration would look like :
int * const ptr;
Lets take a small code to illustrate these type of pointers :
#include<stdio.h>
int main(void)
{
int var1 = 0, var2 = 0;
int *const ptr = &var1;
ptr = &var2;
printf("%d\n", *ptr);
return 0;
}
In the above example :
Pointer to Constant
As evident from the name, a pointer through which one cannot change the value of variable it points is known as a pointer to constant. These type of pointers can change the address they point to but cannot change the value kept at those address.
A pointer to constant is defined as :
const <type of pointer>* <name of pointer>
An example of definition could be :
const int* ptr;
Lets take a small code to illustrate a pointer to a constant :
#include<stdio.h>
int main(void)
{
int var1 = 0;
const int* ptr = &var1;
*ptr = 1;
printf("%d\n", *ptr);
return 0;
}
In the code above :
This arstechnica article describes the basic steps:
Start by visiting the program portal and make sure that your developer certificate is up to date. It expires every six months and, if you haven't requested that a new one be issued, you cannot submit software to App Store. For most people experiencing the "pink upload of doom," though, their certificates are already valid. What next?
Open your Xcode project and check that you've set the active SDK to one of the device choices, like Device - 2.2. Accidentally leaving the build settings to Simulator can be a big reason for the pink rejection. And that happens more often than many developers would care to admit.
Next, make sure that you've chosen a build configuration that uses your distribution (not your developer) certificate. Check this by double-clicking on your target in the Groups & Files column on the left of the project window. The Target Info window will open. Click the Build tab and review your Code Signing Identity. It should be iPhone Distribution: followed by your name or company name.
You may also want to confirm your application identifier in the Properties tab. Most likely, you'll have set the identifier properly when debugging with your developer certificate, but it never hurts to check.
The top-left of your project window also confirms your settings and configuration. It should read something like "Device - 2.2 | Distribution". This shows you the active SDK and configuration.
If your settings are correct but you still aren't getting that upload finished properly, clean your builds. Choose Build > Clean (Command-Shift-K) and click Clean. Alternatively, you can manually trash the build folder in your Project from Finder. Once you've cleaned, build again fresh.
If this does not produce an app that when zipped properly loads to iTunes Connect, quit and relaunch Xcode. I'm not kidding. This one simple trick solves more signing problems and "pink rejections of doom" than any other solution already mentioned.
Android, Python !
When I saw these two keywords together in your question, Kivy is the one which came to my mind first.
Before coming to native Android development in Java using Android Studio, I had tried Kivy. It just awesome. Here are a few advantage I could find out.
Simple to use
With a python basics, you won't have trouble learning it.
Good community
It's well documented and has a great, active community.
Cross platform.
You can develop thing for Android, iOS, Windows, Linux and even Raspberry Pi with this single framework. Open source.
It is a free software
At least few of it's (Cross platform) competitors want you to pay a fee if you want a commercial license.
Accelerated graphics support
Kivy's graphics engine build over OpenGL ES 2 makes it suitable for softwares which require fast graphics rendering such as games.
Now coming into the next part of question, you can't use Android Studio IDE for Kivy. Here is a detailed guide for setting up the development environment.
var redBox = $(".post");
var greenBox = $(".post1");
var offset = redBox.offset();
$(".post1").css({'left': +offset.left});
$(".post1").html("Left :" +offset.left);
You don't need initialization lists for that:
std::vector<int> vector1(length, 0);
std::vector<double> vector2(length, 0.0);
This works fine for me
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php?/$1 [L]
</IfModule >
Do not depend on ADB shell, just treat it (the adb logcat) a normal linux output and then pip it:
$ adb shell logcat | grep YouTag
# just like:
$ ps -ef | grep your_proc
the mySql blob class has the following function :
blob.getBytes
use it like this:
//(assuming you have a ResultSet named RS)
Blob blob = rs.getBlob("SomeDatabaseField");
int blobLength = (int) blob.length();
byte[] blobAsBytes = blob.getBytes(1, blobLength);
//release the blob and free up memory. (since JDBC 4.0)
blob.free();
Using a DateTime parameter is the best way. However, if you still want to pass a DateTime as a string, then the CAST should not be necessary provided that a language agnostic format is used.
e.g.
Given a table created like :
create table t1 (id int, EndDate DATETIME)
insert t1 (id, EndDate) values (1, GETDATE())
The following should always work :
update t1 set EndDate = '20100525' where id = 1 -- YYYYMMDD is language agnostic
The following will work :
SET LANGUAGE us_english
update t1 set EndDate = '2010-05-25' where id = 1
However, this won't :
SET LANGUAGE british
update t1 set EndDate = '2010-05-25' where id = 1
This is because 'YYYY-MM-DD' is not a language agnostic format (from SQL server's point of view) .
The ISO 'YYYY-MM-DDThh:mm:ss' format is also language agnostic, and useful when you need to pass a non-zero time.
More info : http://karaszi.com/the-ultimate-guide-to-the-datetime-datatypes
Here you go:
https://support.google.com/docs/answer/3093281
This is all the documentation that Google provides.
Using only "native" Windows utilities, try the following, where "516" is the process ID that you want the image name for:
for /f "delims=," %a in ( 'tasklist /fi "PID eq 516" /nh /fo:csv' ) do ( echo %~a )
for /f %a in ( 'tasklist /fi "PID eq 516" ^| findstr "516"' ) do ( echo %a )
Or you could use wmic (the Windows Management Instrumentation Command-line tool) and get the full path to the executable:
wmic process where processId=516 get name
wmic process where processId=516 get ExecutablePath
Or you could download Microsoft PsTools, or specifically download just the pslist utility, and use PsList:
for /f %a in ( 'pslist 516 ^| findstr "516"' ) do ( echo %a )
$('body').on("click mousedown mouseup focus blur keydown change mouseup click dblclick mousemove mouseover mouseout mousewheel keydown keyup keypress textInput touchstart touchmove touchend touchcancel resize scroll zoom focus blur select change submit reset",function(e){
console.log(e);
});
If you're certain that only Javascript will be consuming the JSON, I prefer to pass Javascript Date
objects directly.
The ctime()
method on datetime
objects will return a string that the Javascript Date object can understand.
import datetime
date = datetime.datetime.today()
json = '{"mydate":new Date("%s")}' % date.ctime()
Javascript will happily use that as an object literal, and you've got your Date object built right in.
Style the td
and th
instead
td, th {
border: 1px solid black;
}
And also to make it so there is no spacing between cells use:
table {
border-collapse: collapse;
}
(also note, you have border-style: none;
which should be border-style: solid;
)
See an example here: http://jsfiddle.net/KbjNr/
Answer to #1:
If you want the current directory, do this:
import os
os.getcwd()
If you want just any folder name and you have the path to that folder, do this:
def get_folder_name(folder):
'''
Returns the folder name, given a full folder path
'''
return folder.split(os.sep)[-1]
Answer to #2:
import os
print os.path.abspath(__file__)
DECLARE @col int;
select @col = id FROM site WHERE status = 1;
select coalesce(@col,0);
You can do it like you assumed. But your HashMap has to be templated:
Map<String, Map<String, String>> map =
new HashMap<String, Map<String, String>>();
Otherwise you have to do a cast to Map
after you retrieve the second map from the first.
Map map = new HashMap();
((Map)map.get( "keyname" )).get( "nestedkeyname" );
Here's a comparison of four different algorithms for accomplishing this: https://jsperf.com/sorted-array-insert-comparison/1
Algorithms
Naive is always horrible. It seems for small array sizes, the other three dont differ too much, but for larger arrays, the last 2 outperform the simple linear approach.
pkill NAMEofAPP
Non rooted marshmallow, termux & terminal emulator.
Form1:
private void button1_Click(object sender, EventArgs e)
{
Form2 frm = new Form2(this);
frm.Show();
}
Form2:
public partial class Form2 : Form
{
Form opener;
public Form2(Form parentForm)
{
InitializeComponent();
opener = parentForm;
}
private void button1_Click(object sender, EventArgs e)
{
opener.Close();
this.Close();
}
}
It is how to save results to CSV on the client-side without additional non-standard tools.
This example uses only mysql
client and awk
.
One-line:
mysql --skip-column-names --batch -e 'select * from dump3' t | awk -F'\t' '{ sep=""; for(i = 1; i <= NF; i++) { gsub(/\\t/,"\t",$i); gsub(/\\n/,"\n",$i); gsub(/\\\\/,"\\",$i); gsub(/"/,"\"\"",$i); printf sep"\""$i"\""; sep=","; if(i==NF){printf"\n"}}}'
Logical explanation of what is needed to do
First, let see how data looks like in RAW mode (with --raw
option). the database and table are respectively t
and dump3
You can see the field starting from "new line" (in the first row) is splitted into three lines due to new lines placed in the value.
mysql --skip-column-names --batch --raw -e 'select * from dump3' t one line 2 new line quotation marks " backslash \ two quotation marks "" two backslashes \\ two tabs new line the end of field another line 1 another line description without any special chars
--raw
option) - each record changed to the one-line texts by escaping characters like \
<tab>
and new-lines
mysql --skip-column-names --batch -e 'select * from dump3' t one line 2 new line\nquotation marks " backslash \\ two quotation marks "" two backslashes \\\\ two tabs\t\tnew line\nthe end of field another line 1 another line description without any special chars
The clue is to save data in CSV format with escaped characters.
The way to do that is to convert special entities which mysql --batch
produces (\t
as tabs \\
as backshlash and \n
as newline) into equivalent bytes for each value (field).
Then whole value is escaped by "
and enclosed also by "
.
Btw - using the same characters for escaping and enclosing gently simplifies output and processing, because you don't have two special characters.
For this reason all you have to do with values (from csv format perspective) is to change "
to ""
whithin values. In more common way (with escaping and enclosing respectively \
and "
) you would have to first change \
to \\
and then change "
into \"
.
And the commands' explanation step by step:
# we produce one-line output as showed in step 2. mysql --skip-column-names --batch -e 'select * from dump3' t # set fields separator to because mysql produces in that way | awk -F'\t' # this start iterating every line/record from the mysql data - standard behaviour of awk '{ # field separator is empty because we don't print a separator before the first output field sep=""; -- iterating by every field and converting the field to csv proper value for(i = 1; i <= NF; i++) { -- note: \\ two shlashes below mean \ for awk because they're escaped -- changing \t into byte corresponding to <tab> gsub(/\\t/, "\t",$i); -- changing \n into byte corresponding to new line gsub(/\\n/, "\n",$i); -- changing two \\ into one \ gsub(/\\\\/,"\\",$i); -- changing value into CSV proper one literally - change " into "" gsub(/"/, "\"\"",$i); -- print output field enclosed by " and adding separator before printf sep"\""$i"\""; -- separator is set after first field is processed - because earlier we don't need it sep=","; -- adding new line after the last field processed - so this indicates csv record separator if(i==NF) {printf"\n"} } }'
You can use ComboBox, then point your mouse to the upper arrow facing right, it will unfold a box called ComboBox Tasks and in there you can go ahead and edit your items or fill in the items / strings one per line. This should be the easiest.
There is no notion of a function in the JDK as of java 6.
Guava has a Function interface though and the
Collections2.transform(Collection<E>, Function<E,E2>)
method provides the functionality you require.
Example:
// example, converts a collection of integers to their
// hexadecimal string representations
final Collection<Integer> input = Arrays.asList(10, 20, 30, 40, 50);
final Collection<String> output =
Collections2.transform(input, new Function<Integer, String>(){
@Override
public String apply(final Integer input){
return Integer.toHexString(input.intValue());
}
});
System.out.println(output);
Output:
[a, 14, 1e, 28, 32]
These days, with Java 8, there is actually a map function, so I'd probably write the code in a more concise way:
Collection<String> hex = input.stream()
.map(Integer::toHexString)
.collect(Collectors::toList);
Sessions would be the only good way, you could also use GET/POST but that would be potentially insecure.
You don't seem to have the stopwords corpus on your computer.
You need to start the NLTK Downloader and download all the data you need.
Open a Python console and do the following:
>>> import nltk
>>> nltk.download()
showing info http://nltk.github.com/nltk_data/
In the GUI window that opens simply press the 'Download' button to download all corpora or go to the 'Corpora' tab and only download the ones you need/want.
INSERT IGNORE INTO `mytable`
SET `field0` = '2',
`field1` = 12345,
`field2` = 12678;
Here the mysql query, that insert records if not exist and will ignore existing similar records.
----Untested----
I'm not posting this as an answer but a confirmation to Paresh's accepted answer. I recently updated SDK tools to Revision 22 and I noticed my code changes was not being affective on the device i'm testing at all. Such as the url I was using, I was getting errors for connection time out regarding the url I was "previously" using. Therefore I cleaned the project and built again only to find out that autogenerated R.java file is missing.
After reading Paresh's answer and checking what's going on with my sdk manager this is what I saw:
SDK Build-tools 17 was not installed and there was already a new update to SDK tools even though it does not mention any change related to this problem in the changelog, this update brought back my R.java file and the related problems were gone after an eclipse restart and final clean/rebuild on the project.
You should use &
/ |
operators and be careful about operator precedence (==
has lower precedence than bitwise AND
and OR
):
df1 = sqlContext.createDataFrame(
[(1, "a", 2.0), (2, "b", 3.0), (3, "c", 3.0)],
("x1", "x2", "x3"))
df2 = sqlContext.createDataFrame(
[(1, "f", -1.0), (2, "b", 0.0)], ("x1", "x2", "x3"))
df = df1.join(df2, (df1.x1 == df2.x1) & (df1.x2 == df2.x2))
df.show()
## +---+---+---+---+---+---+
## | x1| x2| x3| x1| x2| x3|
## +---+---+---+---+---+---+
## | 2| b|3.0| 2| b|0.0|
## +---+---+---+---+---+---+
Try:
DECLARE @varbinaryField varbinary(max);
SET @varbinaryField = 0x21232F297A57A5A743894A0E4A801FC3;
SELECT CONVERT(varchar(max),@varbinaryField,2),
@varbinaryField
UPDATED: For SQL Server 2008
QString qstr;
std::string str = qstr.toStdString();
However, if you're using Qt:
QTextStream out(stdout);
out << qstr;
IMHO Lookup tables is the way to go, with referential integrity. But only if you avoid "Evil Magic Numbers" by following an example such as this one: Generate enum from a database lookup table using T4
Have Fun!
The method System.Web.UI.Page.RegisterClientScriptBlock has been deprecated for some time (along with the other Page.Register* methods), ever since .NET 2.0 as shown by MSDN.
Instead use the .NET 2.0 Page.ClientScript.Register* methods. - (The ClientScript property expresses an instance of the ClientScriptManager class )
Guessing the problem
If you are saying your JavaScript alert box occurs before the page's content is visibly rendered, and therefore the page remains white (or still unrendered) when the alert box is dismissed by the user, then try using the Page.ClientScript.RegisterStartupScript(..) method instead because it runs the given client-side code when the page finishes loading - and its arguments are similar to what you're using already.
Also check for general JavaScript errors in the page - this is often seen by an error icon in the browser's status bar. Sometimes a JavaScript error will hold up or disturb unrelated elements on the page.
The solution of @Chrispix is dangerous! Trusting all certificates allows anybody to do a man in the middle attack! Just send ANY certificate to the client and it will accept it!
Add your certificate(s) to a custom trust manager like described in this post: Trusting all certificates using HttpClient over HTTPS
Although it is a bit more complex to establish a secure connection with a custom certificate, it will bring you the wanted ssl encryption security without the danger of man in the middle attack!
I have kind of similar condition plus my Search Query not limited to particular Object property ( like "John" Search query should be matched with first_name and also with last_name property ). After spending some hours I got this function from Google's Angular project. They have taken care of every possible cases.
/* Seach in Object */
var comparator = function(obj, text) {
if (obj && text && typeof obj === 'object' && typeof text === 'object') {
for (var objKey in obj) {
if (objKey.charAt(0) !== '$' && hasOwnProperty.call(obj, objKey) &&
comparator(obj[objKey], text[objKey])) {
return true;
}
}
return false;
}
text = ('' + text).toLowerCase();
return ('' + obj).toLowerCase().indexOf(text) > -1;
};
var search = function(obj, text) {
if (typeof text == 'string' && text.charAt(0) === '!') {
return !search(obj, text.substr(1));
}
switch (typeof obj) {
case "boolean":
case "number":
case "string":
return comparator(obj, text);
case "object":
switch (typeof text) {
case "object":
return comparator(obj, text);
default:
for (var objKey in obj) {
if (objKey.charAt(0) !== '$' && search(obj[objKey], text)) {
return true;
}
}
break;
}
return false;
case "array":
for (var i = 0; i < obj.length; i++) {
if (search(obj[i], text)) {
return true;
}
}
return false;
default:
return false;
}
};
Here are some examples:
> z$mean <- rowMeans(subset(z, select = c(x, y)), na.rm = TRUE)
> z
w x y mean
1 5 1 1 1
2 6 2 2 2
3 7 3 3 3
4 8 4 NA 4
weighted mean
> z$y <- rev(z$y)
> z
w x y mean
1 5 1 NA 1
2 6 2 3 2
3 7 3 2 3
4 8 4 1 4
>
> weight <- c(1, 2) # x * 1/3 + y * 2/3
> z$wmean <- apply(subset(z, select = c(x, y)), 1, function(d) weighted.mean(d, weight, na.rm = TRUE))
> z
w x y mean wmean
1 5 1 NA 1 1.000000
2 6 2 3 2 2.666667
3 7 3 2 3 2.333333
4 8 4 1 4 2.000000
I guess I'm unclear about what the OP was really asking for... Do you want to pass the whole array/list and operate on it inside the function? Or do you want the same thing done on every value/item in the array/list. If the latter is what you wish I have found a method which works well.
I'm more familiar with programming languages such as Fortran and C, in which you can define elemental functions which operate on each element inside an array. I finally tracked down the python equivalent to this and thought I would repost the solution here. The key is to 'vectorize' the function. Here is an example:
def myfunc(a,b):
if (a>b): return a
else: return b
vecfunc = np.vectorize(myfunc)
result=vecfunc([[1,2,3],[5,6,9]],[7,4,5])
print(result)
Output:
[[7 4 5]
[7 6 9]]
cd /usr/local/tomcat/logs
tail -f catalina.out
according to the composer reference there are two relevant options: disable-tls
and secure-http
.
nano ~/.composer/config.json
(If the file does not exist or is empty, then just create it with the following content)
{
"config": {
"disable-tls": true,
"secure-http": false
}
}
then it complains much:
You are running Composer with SSL/TLS protection disabled.
Warning: Accessing getcomposer.org over http which is an insecure protocol.
but it performs the composer selfupdate
(or whatever).
while one cannot simply "enable SSL in the php.ini" on Linux; PHP needs to be compiled with openSSL configured as shared
library - in order to be able to access it from the PHP CLI SAPI.
grep "$(printf '\t')"
worked for me on Mac OS X
You should find that the following schema allows the what you have proposed.
<xs:element name="foo">
<xs:complexType>
<xs:sequence minOccurs="0" maxOccurs="unbounded">
<xs:choice>
<xs:element maxOccurs="unbounded" name="child1" type="xs:unsignedByte" />
<xs:element maxOccurs="unbounded" name="child2" type="xs:string" />
</xs:choice>
</xs:sequence>
</xs:complexType>
</xs:element>
This will allow you to create a file such as:
<?xml version="1.0" encoding="utf-8" ?>
<foo>
<child1>2</child1>
<child1>3</child1>
<child2>test</child2>
<child2>another-test</child2>
</foo>
Which seems to match your question.
I had the same issue on Windows. It was resolved by setting the environment variable as follow:
Variable name: OPENSSL_CONF Variable value: C:(OpenSSl Directory)\bin\openssl.cnf
Two things to keep in mind Content-Type and the Encoding
1) What if the file is css
if (/.(css)$/.test(path)) {
res.writeHead(200, {'Content-Type': 'text/css'});
res.write(data, 'utf8');
}
2) What if the file is jpg/png
if (/.(jpg)$/.test(path)) {
res.writeHead(200, {'Content-Type': 'image/jpg'});
res.end(data,'Base64');
}
Above one is just a sample code to explain the answer and not the exact code pattern.
In ResourceServerConfigurerAdapter
class, below code snipped worked for me. http.exceptionHandling().authenticationEntryPoint(new AuthFailureHandler()).and.csrf()..
did not work. That's why I wrote it as separate call.
public class ResourceServerConfiguration extends ResourceServerConfigurerAdapter {
@Override
public void configure(HttpSecurity http) throws Exception {
http.exceptionHandling().authenticationEntryPoint(new AuthFailureHandler());
http.csrf().disable()
.anonymous().disable()
.authorizeRequests()
.antMatchers(HttpMethod.OPTIONS).permitAll()
.antMatchers("/subscribers/**").authenticated()
.antMatchers("/requests/**").authenticated();
}
Implementation of AuthenticationEntryPoint for catching token expiry and missing authorization header.
public class AuthFailureHandler implements AuthenticationEntryPoint {
@Override
public void commence(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, AuthenticationException e)
throws IOException, ServletException {
httpServletResponse.setContentType("application/json");
httpServletResponse.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
if( e instanceof InsufficientAuthenticationException) {
if( e.getCause() instanceof InvalidTokenException ){
httpServletResponse.getOutputStream().println(
"{ "
+ "\"message\": \"Token has expired\","
+ "\"type\": \"Unauthorized\","
+ "\"status\": 401"
+ "}");
}
}
if( e instanceof AuthenticationCredentialsNotFoundException) {
httpServletResponse.getOutputStream().println(
"{ "
+ "\"message\": \"Missing Authorization Header\","
+ "\"type\": \"Unauthorized\","
+ "\"status\": 401"
+ "}");
}
}
}
If you know what parameter you want to pass, take a Action<T>
for the type. Example:
void LoopMethod (Action<int> code, int count) {
for (int i = 0; i < count; i++) {
code(i);
}
}
If you want the parameter to be passed to your method, make the method generic:
void LoopMethod<T> (Action<T> code, int count, T paramater) {
for (int i = 0; i < count; i++) {
code(paramater);
}
}
And the caller code:
Action<string> s = Console.WriteLine;
LoopMethod(s, 10, "Hello World");
Update. Your code should look like:
private void Include(IList<string> includes, Action<string> action)
{
if (includes != null)
{
foreach (var include in includes)
action(include);
}
}
public void test()
{
Action<string> dg = (s) => {
_context.Cars.Include(s);
};
this.Include(includes, dg);
}
Try this!
int num = 1234;
String s = Integer.toString(num);
int[] intArray = new int[s.length()];
for(int i=0; i<s.length(); i++){
intArray[i] = Character.getNumericValue(s.charAt(i));
}
You could try this:
DECLARE @List VARCHAR(MAX)
SELECT @List = '1,2,3,4,5,6,7,8'
EXEC(
'DELETE
FROM TABLE
WHERE ID NOT IN (' + @List + ')'
)
The directory must be empty and your program must have permissions to delete it
but the function called rmdir will do it
rmdir("C:/Documents and Settings/user/Desktop/itsme")
$('div').removeAttr('style');
Do you want to order it?
Select * From temp where mydate > '2009-06-29 04:00:44' ORDER BY mydate;
To get IP address and hostname in .NET Core, put the following code in the controller:
var addlist = Dns.GetHostEntry(Dns.GetHostName());
string GetHostName = addlist.HostName.ToString();
string GetIPV6 = addlist.AddressList[0].ToString();
string GetIPV4 = addlist.AddressList[1].ToString();
I was gone through same problem & I resolved it by following steps.
@AndreSmiley 's code of line worked for me.
only modification required is.
-XX:MaxPermSize=256m
"m" means MB.
Actually my application is kinda huge so i was advised to make it 1024m for performance.
CREATE TABLE #dum (id int identity(1,1) primary key, def int NOT NULL default(5), name varchar(25))
-- this works
INSERT #dum (def, name) VALUES (DEFAULT, 'jeff')
SELECT * FROM #dum;
DECLARE @some int
-- this *doesn't* work and I think it should
INSERT #dum (def, name)
VALUES (ISNULL(@some, DEFAULT), 'george')
SELECT * FROM #dum;
svn:// doesn't talk http, therefor there's nothing a http proxy could do.
Any reason why http doesn't work? Have you considered https? If you really need it, you probably have to have port 3690 opened in your firewall.
you need to add Content-Disposition header, smth like this (although I used mod-python here, but principle should be the same):
request.headers_out['Content-Disposition'] = 'attachment; filename=%s' % myfname
I went to a bunch of SQL Server 2008 talks in PASS 2008, the only 'killer feature' from my point of view is extended events.
There are lots of great improvements, but that was the only one that got close to being a game changer for me. Table value parameters and merge were probably my next favourite. Day-to-day, IntelliSense is a huge win.. But this isn't really specific to SQL Server 2008, just the SQL Server 2008 toolset (other tools can give you similar IntelliSense against SQL Server 2005, 2000, etc.).
use google Guava and do it in 2 lines:
import java.util.Map;
import com.google.common.base.Splitter;
public class Parser {
public static void main(String... args) {
String uri = "https://google.com.ua/oauth/authorize?client_id=SS&response_type=code&scope=N_FULL&access_type=offline&redirect_uri=http://localhost/Callback";
String query = uri.split("\\?")[1];
final Map<String, String> map = Splitter.on('&').trimResults().withKeyValueSeparator('=').split(query);
System.out.println(map);
}
}
which gives you
{client_id=SS, response_type=code, scope=N_FULL, access_type=offline, redirect_uri=http://localhost/Callback}
To send json to the server, you first have to create json
function sendData() {
$.ajax({
url: '/helloworld',
type: 'POST',
contentType: 'application/json',
data: JSON.stringify({
name:"Bob",
...
}),
dataType: 'json'
});
}
This is how you would structure the ajax request to send the json as a post var.
function sendData() {
$.ajax({
url: '/helloworld',
type: 'POST',
data: { json: JSON.stringify({
name:"Bob",
...
})},
dataType: 'json'
});
}
The json will now be in the json
post var.
I had the similar issue using Flurl.Http:
Flurl.Http.FlurlHttpException: Call failed. Cannot send a content-body with this verb-type. GET http://******:8301/api/v1/agents/**** ---> System.Net.ProtocolViolationException: Cannot send a content-body with this verb-type.
The problem was I used .WithHeader("Content-Type", "application/json")
when creating IFlurlRequest.
It's a double-edged sword. It is sometimes very useful, but often dangerous.
When is it good? When you want 10 cases all processed the same way...
switch (c) {
case 1:
case 2:
... Do some of the work ...
/* FALLTHROUGH */
case 17:
... Do something ...
break;
case 5:
case 43:
... Do something else ...
break;
}
The one rule I like is that if you ever do anything fancy where you exclude the break, you need a clear comment /* FALLTHROUGH */ to indicate that was your intention.
If the other class is compiled as a library (i.e. a dll) and this is how you want it, you should add a reference from visual studio, browse and point to to the dll file.
If what you want is to incorporate the OtherClassFile.cs into your project, and the namespace is already identical, you can:
Open YourProjectName.csproj file, and look for this section:
<ItemGroup>
<Compile Include="ExistingClass1.cs" />
<Compile Include="ExistingClass2.cs" />
...
<Compile Include="Properties\AssemblyInfo.cs" />
</ItemGroup>
Check that the .cs file that you want to add is in the project folder (same folder as all the existing classes in the solution).
Add an entry inside as below, save and open the project.
<Compile Include="OtherClassFile.cs" />
Your class, will now appear and behave as part of the project. No using is needed. This can be done multiple files in one shot.
$_GET
contains the keys / values that are passed to your script in the URL.
If you have the following URL :
http://www.example.com/test.php?a=10&b=plop
Then $_GET
will contain :
array
'a' => string '10' (length=2)
'b' => string 'plop' (length=4)
Of course, as $_GET
is not read-only, you could also set some values from your PHP code, if needed :
$_GET['my_value'] = 'test';
But this doesn't seem like good practice, as $_GET
is supposed to contain data from the URL requested by the client.
Give it a chance:
Try getting string via function gets(string) then check condition as if(string[0] == '\0')
For what its worth you are also only generating numbers between 0 and 99 (inclusive). If you wanted to generate values between 0 and 100 you would need.
rand() % 101
in addition to calling srand() as mentioned by others.
If you want to get a monthly statistics with row counts per month of each year ordered by latest month, then try this:
SELECT count(id),
YEAR(record_date),
MONTH(record_date)
FROM `table`
GROUP BY YEAR(record_date),
MONTH(record_date)
ORDER BY YEAR(record_date) DESC,
MONTH(record_date) DESC
echo "select * from users;" | mysql -uroot -p -hslavedb.mydomain.com mydb_production
Protobuf is very very fast.
See http://code.google.com/p/protobuf-net/wiki/Performance for in depth information concerning the performance of this system, and an implementation.
You mention a provisioning profile but I don't see any mention of an Apple Push Profile.
To use Push you must have a push profile (there are two, one for development and one for release). After you've created it you'll need to make sure it contains the relevant certificates (see the EDIT section below).
This is an excellent tutorial that will walk you through all the steps:
http://www.raywenderlich.com/3443/apple-push-notification-services-tutorial-part-12
It would take me, or anybody else, hours and hours to write a thorough detailed answer like this tutorial, so I'm not going to attempt to, nor lay claim to the bounty when this tutorial already exists.
P.S. I believe you don't need entitlements any more, this is a legacy thing.
EDIT: You should also check you have the necessary profiles on the device - go to the settings, then general, profiles, check your profiles are listed, especially the push profile of course. You can also check this from the Organizer section of XCode. In Organizer there are two sections that say Provision Profiles - one at the top left in Library (this is the profiles in XCode that you use to sign etc.) Also you will see a section call Provisioning Profiles for the device that is connected, this is the profile that is installed on the handset. If you don't have them installed on the handset you can download them from the provisioning portal website, then click on the Add button at the bottom of the Organizer window.
While in the provisioning portal you should also check that the Apple Push Profile includes the certificates: - click on Provisioning on the left hand menu - you'll see a list of your profile, select to EDIT the Apple push profile - you'll see a certificates section, with a list of developers or testers etc. you have in your project, make sure the check box is checked for them. - you'll also see a devices section, make sure the device you are testing on has been added.
If you have any old profiles in XCode or on the device delete them and download/refresh/install all the new profiles from the provisioning portal
The docs say regarding list-style-position
: outside
CSS1 did not specify the precise location of the marker box and for reasons of compatibility, CSS2 remains equally ambiguous. For more precise control of marker boxes, please use markers.
Further up that page is the stuff about markers.
One example is:
LI:before {
display: marker;
content: "(" counter(counter) ")";
counter-increment: counter;
width: 6em;
text-align: center;
}
As previously mentioned, you have to write it. Here is my humble version: (super basic one)
function tprint (t, s)
for k, v in pairs(t) do
local kfmt = '["' .. tostring(k) ..'"]'
if type(k) ~= 'string' then
kfmt = '[' .. k .. ']'
end
local vfmt = '"'.. tostring(v) ..'"'
if type(v) == 'table' then
tprint(v, (s or '')..kfmt)
else
if type(v) ~= 'string' then
vfmt = tostring(v)
end
print(type(t)..(s or '')..kfmt..' = '..vfmt)
end
end
end
example:
local mytbl = { ['1']="a", 2, 3, b="c", t={d=1} }
tprint(mytbl)
output (Lua 5.0):
table[1] = 2
table[2] = 3
table["1"] = "a"
table["t"]["d"] = 1
table["b"] = "c"
"Z" doesn't stand for "Zulu"
I don't have any more information than the Wikipedia article cited by the two existing answers, but I believe the interpretation that "Z" stands for "Zulu" is incorrect. UTC time is referred to as "Zulu time" because of the use of Z to identify it, not the other way around. The "Z" seems to have been used to mark the time zone as the "zero zone", in which case "Z" unsurprisingly stands for "zero" (assuming the following information from Wikipedia is accurate):
Around 1950, a letter suffix was added to the zone description, assigning Z to the zero zone, and A–M (except J) to the east and N–Y to the west (J may be assigned to local time in non-nautical applications — zones M and Y have the same clock time but differ by 24 hours: a full day). These can be vocalized using the NATO phonetic alphabet which pronounces the letter Z as Zulu, leading to the use of the term "Zulu Time" for Greenwich Mean Time, or UT1 from January 1, 1972 onward.
Right below the RewriteEngine On
line, add:
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)/$ /$1 [L,R] # <- for test, for prod use [L,R=301]
to enforce a no-trailing-slash policy.
To enforce a trailing-slash policy:
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(.*[^/])$ /$1/ [L,R] # <- for test, for prod use [L,R=301]
EDIT: commented the R=301
parts because, as explained in a comment:
Be careful with that
R=301
! Having it there makes many browsers cache the .htaccess-file indefinitely: It somehow becomes irreversible if you can't clear the browser-cache on all machines that opened it. When testing, better go with simpleR
orR=302
After you've completed your tests, you can use R=301
.
WebElement element = driver.findElement(By.id("foo"));
String contents = (String)((JavascriptExecutor)driver).executeScript("return arguments[0].innerHTML;", element);
This code really works to get JavaScript from source as well!
DataColumnCollection col = datatable.Columns;
if (!columns.Contains("ColumnName1"))
{
//Column1 Not Exists
}
if (columns.Contains("ColumnName2"))
{
//Column2 Exists
}
You Could always use and leave out the "when not matched section"
merge into table1 FromTable
using table2 ToTable
on ( FromTable.field1 = ToTable.field1
and FromTable.field2 =ToTable.field2)
when Matched then
update set
ToTable.fieldr = FromTable.fieldx,
ToTable.fields = FromTable.fieldy,
ToTable.fieldt = FromTable.fieldz)
when not matched then
insert (ToTable.field1,
ToTable.field2,
ToTable.fieldr,
ToTable.fields,
ToTable.fieldt)
values (FromTable.field1,
FromTable.field2,
FromTable.fieldx,
FromTable.fieldy,
FromTable.fieldz);
This is a bit nasty, but:
from datetime import datetime, timedelta
now = datetime.now().time()
# Just use January the first, 2000
d1 = datetime(2000, 1, 1, now.hour, now.minute, now.second)
d2 = d1 + timedelta(hours=1, minutes=23)
print d2.time()
Access your list elements directly by i. Then you can append to your list:
for i in xrange(len(myarr)):
if somecond(a[i]):
myarr.append(newObj())
In the hypothetical situation where you could perform a potentially expensive non-const operation on an object, returning by const-value prevents you from accidentally calling this operation on a temporary. Imagine that +
returned a non-const value, and you could write:
(a + b).expensive();
In the age of C++11, however, it is strongly advised to return values as non-const so that you can take full advantage of rvalue references, which only make sense on non-constant rvalues.
In summary, there is a rationale for this practice, but it is essentially obsolete.
Huffman encoding is a sensible option here. Gzip and friends do this, but the way they work is to build a Huffman tree for the input, send that, then send the data encoded with the tree. If the tree is large relative to the data, there may be no not saving in size.
However, it is possible to avoid sending a tree: instead, you arrange for the sender and receiver to already have one. It can't be built specifically for every string, but you can have a single global tree used to encode all strings. If you build it from the same language as the input strings (English or whatever), you should still get good compression, although not as good as with a custom tree for every input.
Localization of date string:
Based on redsonic's post:
private String localizeDate(String inputdate, Locale locale) {
Date date = new Date();
SimpleDateFormat dateFormatCN = new SimpleDateFormat("dd-MMM-yyyy", locale);
SimpleDateFormat dateFormat = new SimpleDateFormat("dd-MMM-yyyy");
try {
date = dateFormat.parse(inputdate);
} catch (ParseException e) {
log.warn("Input date was not correct. Can not localize it.");
return inputdate;
}
return dateFormatCN.format(date);
}
String localizedDate = localizeDate("05-Sep-2013", new Locale("zh","CN"));
will be like 05-??-2013
Here's a simple scraper I created in c# to get streaming quote data printed out to a console. It should be easily converted to java. Based on the following post:
http://blog.underdog-projects.net/2009/02/bringing-the-yahoo-finance-stream-to-the-shell/
Not too fancy (i.e. no regex etc), just a fast & dirty solution.
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Web.Script.Serialization;
namespace WebDataAddin
{
public class YahooConstants
{
public const string AskPrice = "a00";
public const string BidPrice = "b00";
public const string DayRangeLow = "g00";
public const string DayRangeHigh = "h00";
public const string MarketCap = "j10";
public const string Volume = "v00";
public const string AskSize = "a50";
public const string BidSize = "b60";
public const string EcnBid = "b30";
public const string EcnBidSize = "o50";
public const string EcnExtHrBid = "z03";
public const string EcnExtHrBidSize = "z04";
public const string EcnAsk = "b20";
public const string EcnAskSize = "o40";
public const string EcnExtHrAsk = "z05";
public const string EcnExtHrAskSize = "z07";
public const string EcnDayHigh = "h01";
public const string EcnDayLow = "g01";
public const string EcnExtHrDayHigh = "h02";
public const string EcnExtHrDayLow = "g11";
public const string LastTradeTimeUnixEpochformat = "t10";
public const string EcnQuoteLastTime = "t50";
public const string EcnExtHourTime = "t51";
public const string RtQuoteLastTime = "t53";
public const string RtExtHourQuoteLastTime = "t54";
public const string LastTrade = "l10";
public const string EcnQuoteLastValue = "l90";
public const string EcnExtHourPrice = "l91";
public const string RtQuoteLastValue = "l84";
public const string RtExtHourQuoteLastValue = "l86";
public const string QuoteChangeAbsolute = "c10";
public const string EcnQuoteAfterHourChangeAbsolute = "c81";
public const string EcnQuoteChangeAbsolute = "c60";
public const string EcnExtHourChange1 = "z02";
public const string EcnExtHourChange2 = "z08";
public const string RtQuoteChangeAbsolute = "c63";
public const string RtExtHourQuoteAfterHourChangeAbsolute = "c85";
public const string RtExtHourQuoteChangeAbsolute = "c64";
public const string QuoteChangePercent = "p20";
public const string EcnQuoteAfterHourChangePercent = "c82";
public const string EcnQuoteChangePercent = "p40";
public const string EcnExtHourPercentChange1 = "p41";
public const string EcnExtHourPercentChange2 = "z09";
public const string RtQuoteChangePercent = "p43";
public const string RtExtHourQuoteAfterHourChangePercent = "c86";
public const string RtExtHourQuoteChangePercent = "p44";
public static readonly IDictionary<string, string> CodeMap = typeof(YahooConstants).GetFields().
Where(field => field.FieldType == typeof(string)).
ToDictionary(field => ((string)field.GetValue(null)).ToUpper(), field => field.Name);
}
public static class StringBuilderExtensions
{
public static bool HasPrefix(this StringBuilder builder, string prefix)
{
return ContainsAtIndex(builder, prefix, 0);
}
public static bool HasSuffix(this StringBuilder builder, string suffix)
{
return ContainsAtIndex(builder, suffix, builder.Length - suffix.Length);
}
private static bool ContainsAtIndex(this StringBuilder builder, string str, int index)
{
if (builder != null && !string.IsNullOrEmpty(str) && index >= 0
&& builder.Length >= str.Length + index)
{
return !str.Where((t, i) => builder[index + i] != t).Any();
}
return false;
}
}
public class WebDataAddin
{
public const string ScriptStart = "<script>";
public const string ScriptEnd = "</script>";
public const string MessageStart = "try{parent.yfs_";
public const string MessageEnd = ");}catch(e){}";
public const string DataMessage = "u1f(";
public const string InfoMessage = "mktmcb(";
protected static T ParseJson<T>(string json)
{
// parse json - max acceptable value retrieved from
//http://forums.asp.net/t/1343461.aspx
var deserializer = new JavaScriptSerializer { MaxJsonLength = 2147483647 };
return deserializer.Deserialize<T>(json);
}
public static void Main()
{
const string symbols = "GBPUSD=X,SPY,MSFT,BAC,QQQ,GOOG";
// these are constants in the YahooConstants enum above
const string attrs = "b00,b60,a00,a50";
const string url = "http://streamerapi.finance.yahoo.com/streamer/1.0?s={0}&k={1}&r=0&callback=parent.yfs_u1f&mktmcb=parent.yfs_mktmcb&gencallback=parent.yfs_gencb®ion=US&lang=en-US&localize=0&mu=1";
var req = WebRequest.Create(string.Format(url, symbols, attrs));
req.Proxy.Credentials = CredentialCache.DefaultCredentials;
var missingCodes = new HashSet<string>();
var response = req.GetResponse();
if(response != null)
{
var stream = response.GetResponseStream();
if (stream != null)
{
using (var reader = new StreamReader(stream))
{
var builder = new StringBuilder();
var initialPayloadReceived = false;
while (!reader.EndOfStream)
{
var c = (char)reader.Read();
builder.Append(c);
if(!initialPayloadReceived)
{
if (builder.HasSuffix(ScriptStart))
{
// chop off the first part, and re-append the
// script tag (this is all we care about)
builder.Clear();
builder.Append(ScriptStart);
initialPayloadReceived = true;
}
}
else
{
// check if we have a fully formed message
// (check suffix first to avoid re-checking
// the prefix over and over)
if (builder.HasSuffix(ScriptEnd) &&
builder.HasPrefix(ScriptStart))
{
var chop = ScriptStart.Length + MessageStart.Length;
var javascript = builder.ToString(chop,
builder.Length - ScriptEnd.Length - MessageEnd.Length - chop);
if (javascript.StartsWith(DataMessage))
{
var json = ParseJson<Dictionary<string, object>>(
javascript.Substring(DataMessage.Length));
// parse out the data. key should be the symbol
foreach(var symbol in json)
{
Console.WriteLine("Symbol: {0}", symbol.Key);
var symbolData = (Dictionary<string, object>) symbol.Value;
foreach(var dataAttr in symbolData)
{
var codeKey = dataAttr.Key.ToUpper();
if (YahooConstants.CodeMap.ContainsKey(codeKey))
{
Console.WriteLine("\t{0}: {1}", YahooConstants.
CodeMap[codeKey], dataAttr.Value);
} else
{
missingCodes.Add(codeKey);
Console.WriteLine("\t{0}: {1} (Warning! No Code Mapping Found)",
codeKey, dataAttr.Value);
}
}
Console.WriteLine();
}
} else if(javascript.StartsWith(InfoMessage))
{
var json = ParseJson<Dictionary<string, object>>(
javascript.Substring(InfoMessage.Length));
foreach (var dataAttr in json)
{
Console.WriteLine("\t{0}: {1}", dataAttr.Key, dataAttr.Value);
}
Console.WriteLine();
} else
{
throw new Exception("Cannot recognize the message type");
}
builder.Clear();
}
}
}
}
}
}
}
}
}
If you're using Bootstrap 3, you can use the Glyphicons.
.slick-prev:before, .slick-next:before {
font-family: "Glyphicons Halflings", "slick", sans-serif;
font-size: 40px;
}
.slick-prev:before { content: "\e257"; }
.slick-next:before { content: "\e258"; }
there is a function called isNaN
it return true if it's (Not-a-number) , so u can check for a number this way
if(!isNaN(miscCharge))
{
//do some thing if it's a number
}else{
//do some thing if it's NOT a number
}
hope it works
I think the problem is the realpath of the file. For example your script is working on './', your file is inside the directory './xml'. So better check if the file exists or not, before you get filemtime or unlink it:
function deleteOldFiles(){
if ($handle = opendir('./xml')) {
while (false !== ($file = readdir($handle))) {
if(preg_match("/^.*\.(xml|xsl)$/i", $file)){
$fpath = 'xml/'.$file;
if (file_exists($fpath)) {
$filelastmodified = filemtime($fpath);
if ( (time() - $filelastmodified ) > 24*3600){
unlink($fpath);
}
}
}
}
closedir($handle);
}
}
In a navigation based application you can change color
NSArray *ver = [[UIDevice currentDevice].systemVersion componentsSeparatedByString:@"."];
if ([[ver objectAtIndex:0] intValue] >= 7) {
self.navigationController.navigationBar.barTintColor = [UIColor colorWithRed:19.0/255.0 green:86.0/255.0 blue:138.0/255.0 alpha:1];
self.navigationController.navigationBar.translucent = NO;
} else {
self.navigationController.navigationBar.tintColor = [UIColor colorWithRed:19.0/255.0 green:86.0/255.0 blue:138.0/255.0 alpha:1];
}
Just the heads up, there seems to be special CSS class for this called form-horizontal
input-append has another side effect, that it drops font-size to zero
On MinGW, the _WIN32
define check isn't working. Here's a solution:
#if defined(_WIN32) || defined(__CYGWIN__)
// Windows (x86 or x64)
// ...
#elif defined(__linux__)
// Linux
// ...
#elif defined(__APPLE__) && defined(__MACH__)
// Mac OS
// ...
#elif defined(unix) || defined(__unix__) || defined(__unix)
// Unix like OS
// ...
#else
#error Unknown environment!
#endif
For more information please look: https://sourceforge.net/p/predef/wiki/OperatingSystems/
In at least Postgres, you can use the alias name in the group by clause:
SELECT itemName as ItemName1, substring(itemName, 1,1) as FirstLetter, Count(itemName) FROM table1 GROUP BY ItemName1, FirstLetter;
I wouldn't recommend renaming an alias as a change in capitalization, that causes confusion.
I'd prefer to use [:punct:]
for that. Also, a-zA-Z09-9
could be just [:alnum:]
:
[[ $TEST =~ ^[[:alnum:][:blank:][:punct:]]+$ ]]
A combination of basename and cut works fine, even in case of double ending like .tar.gz
:
fbname=$(basename "$fullfile" | cut -d. -f1)
Would be interesting if this solution needs less arithmetic power than Bash Parameter Expansion.
Try redirecting the output like this:
$key = & 'gpg' --decrypt "secret.gpg" --quiet --no-verbose >$null 2>&1
Something like this should work
var text = $('#toptitle').text();
if (text == 'Profil'){
$('#toptitle').text('New Word');
}
Process QProc = new Process();
QProc.StartInfo.FileName = "cmd";
QProc.StartInfo.Arguments ="/c InstallUtil "+ "\""+ filefullPath +"\"";
QProc.StartInfo.WorkingDirectory = Environment.GetEnvironmentVariable("windir") + @"\Microsoft.NET\Framework\v2.0.50727\";
QProc.StartInfo.UseShellExecute = false;
// QProc.StartInfo.CreateNoWindow = true;
QProc.StartInfo.RedirectStandardOutput = true;
QProc.Start();
// QProc.WaitForExit();
QProc.Close();
Recursive solution to print all items in a list:
def printItems(l):
for i in l:
if isinstance(i,list):
printItems(i)
else:
print i
l = [['vegas','London'],['US','UK']]
printItems(l)
When using git rm, the removal will part of your next commit. So if you want to push the change you should use git rm
You can rename a file using git
's mv
command:
$ git mv file_from file_to
Example:
$ git mv helo.txt hello.txt
$ git status
# On branch master
# Changes to be committed:
# (use "git reset HEAD <file>..." to unstage)
#
# renamed: helo.txt -> hello.txt
#
$ git commit -m "renamed helo.txt to hello.txt"
[master 14c8c4f] renamed helo.txt to hello.txt
1 files changed, 0 insertions(+), 0 deletions(-)
rename helo.txt => hello.txt (100%)
Very interesting question. I think it's mainly a semantic meaning, and may also be due to historical reasons.
Although in current Android Activity and Service implementations, getApplication()
and getApplicationContext()
return the same object, there is no guarantee that this will always be the case (for example, in a specific vendor implementation).
So if you want the Application class you registered in the Manifest, you should never call getApplicationContext()
and cast it to your application, because it may not be the application instance (which you obviously experienced with the test framework).
Why does getApplicationContext()
exist in the first place ?
getApplication()
is only available in the Activity class and the Service class, whereas getApplicationContext()
is declared in the Context class.
That actually means one thing : when writing code in a broadcast receiver, which is not a context but is given a context in its onReceive method, you can only call getApplicationContext()
. Which also means that you are not guaranteed to have access to your application in a BroadcastReceiver.
When looking at the Android code, you see that when attached, an activity receives a base context and an application, and those are different parameters. getApplicationContext()
delegates it's call to baseContext.getApplicationContext()
.
One more thing : the documentation says that it most cases, you shouldn't need to subclass Application:
There is normally no need to subclass
Application
. In most situation, static singletons can provide the same functionality in a more modular way. If your singleton needs a global context (for example to register broadcast receivers), the function to retrieve it can be given aContext
which internally usesContext.getApplicationContext()
when first constructing the singleton.
I know this is not an exact and precise answer, but still, does that answer your question?
The docs give a fair indicator of what's required., however requests
allow us to skip a few steps:
You only need to install the security
package extras (thanks @admdrew for pointing it out)
$ pip install requests[security]
or, install them directly:
$ pip install pyopenssl ndg-httpsclient pyasn1
Requests will then automatically inject pyopenssl
into urllib3
If you're on ubuntu, you may run into trouble installing pyopenssl
, you'll need these dependencies:
$ apt-get install libffi-dev libssl-dev
Current answers are perfectly correct on how to create the aggregations, but none actually address the column alias/renaming that is also requested in the question.
Typically, this is how I handle this case:
val dimensionFields = List("col1")
val metrics = List("col2", "col3", "col4")
val columnOfInterests = dimensions ++ metrics
val df = spark.read.table("some_table").
.select(columnOfInterests.map(c => col(c)):_*)
.groupBy(dimensions.map(d => col(d)): _*)
.agg(metrics.map( m => m -> "sum").toMap)
.toDF(columnOfInterests:_*) // that's the interesting part
The last line essentially renames every columns of the aggregated dataframe to the original fields, essentially changing sum(col2)
and sum(col3)
to simply col2
and col3
.
Another way to turn off CSRF that won't render a null session is to add:
skip_before_action :verify_authenticity_token
in your Rails Controller. This will ensure you still have access to session info.
Again, make sure you only do this in API controllers or in other places where CSRF protection doesn't quite apply.