That's a very general question. One answer is: "it depends what kind of UUID you wish to generate". But a better one is this: "Well, before I answer, can you tell us why you need to code up your own UUID generation algorithm instead of calling the UUID generation functionality that most modern operating systems provide?"
Doing that is easier and safer, and since you probably don't need to generate your own, why bother coding up an implementation? In that case, the answer becomes use whatever your O/S, programming language or framework provides. For example, in Windows, there is CoCreateGuid or UuidCreate or one of the various wrappers available from the numerous frameworks in use. In Linux there is uuid_generate.
If you, for some reason, absolutely need to generate your own, then at least have the good sense to stay away from generating v1 and v2 UUIDs. It's tricky to get those right. Stick, instead, to v3, v4 or v5 UUIDs.
Update:
In a comment, you mention that you are using Python and link to this. Looking through the interface provided, the easiest option for you would be to generate a v4 UUID (that is, one created from random data) by calling uuid.uuid4()
.
If you have some data that you need to (or can) hash to generate a UUID from, then you can use either v3 (which relies on MD5) or v5 (which relies on SHA1). Generating a v3 or v5 UUID is simple: first pick the UUID type you want to generate (you should probably choose v5) and then pick the appropriate namespace and call the function with the data you want to use to generate the UUID from. For example, if you are hashing a URL you would use NAMESPACE_URL
:
uuid.uuid3(uuid.NAMESPACE_URL, 'https://ripple.com')
Please note that this UUID will be different than the v5 UUID for the same URL, which is generated like this:
uuid.uuid5(uuid.NAMESPACE_URL, 'https://ripple.com')
A nice property of v3 and v5 URLs is that they should be interoperable between implementations. In other words, if two different systems are using an implementation that complies with RFC4122, they will (or at least should) both generate the same UUID if all other things are equal (i.e. generating the same version UUID, with the same namespace and the same data). This property can be very helpful in some situations (especially in content-addressible storage scenarios), but perhaps not in your particular case.
As simple as it can be
Use $(this)
here too
$(document).on("click",".appDetails", function () {
var clickedBtnID = $(this).attr('id'); // or var clickedBtnID = this.id
alert('you clicked on button #' + clickedBtnID);
});
I don't think so. The API's will provide access to delayed quotes, there is no way that real time data or tick data, will be provided for free.
The following is a test class that mocks private static final Logger named log
in class LogUtil
.
In addition to mocking the getLogger
factory call, it is necessary to explicitly set the field using reflection, in @BeforeClass
public class LogUtilTest {
private static Logger logger;
private static MockedStatic<LoggerFactory> loggerFactoryMockedStatic;
/**
* Since {@link LogUtil#log} being a static final variable it is only initialized once at the class load time
* So assertions are also performed against the same mock {@link LogUtilTest#logger}
*/
@BeforeClass
public static void beforeClass() {
logger = mock(Logger.class);
loggerFactoryMockedStatic = mockStatic(LoggerFactory.class);
loggerFactoryMockedStatic.when(() -> LoggerFactory.getLogger(anyString())).thenReturn(logger);
Whitebox.setInternalState(LogUtil.class, "log", logger);
}
@AfterClass
public static void after() {
loggerFactoryMockedStatic.close();
}
}
I don't think the status bar color has been implemented in AppCompat yet. These are the attributes which are available:
<!-- ============= -->
<!-- Color palette -->
<!-- ============= -->
<!-- The primary branding color for the app. By default, this is the color applied to the
action bar background. -->
<attr name="colorPrimary" format="color" />
<!-- Dark variant of the primary branding color. By default, this is the color applied to
the status bar (via statusBarColor) and navigation bar (via navigationBarColor). -->
<attr name="colorPrimaryDark" format="color" />
<!-- Bright complement to the primary branding color. By default, this is the color applied
to framework controls (via colorControlActivated). -->
<attr name="colorAccent" format="color" />
<!-- The color applied to framework controls in their normal state. -->
<attr name="colorControlNormal" format="color" />
<!-- The color applied to framework controls in their activated (ex. checked) state. -->
<attr name="colorControlActivated" format="color" />
<!-- The color applied to framework control highlights (ex. ripples, list selectors). -->
<attr name="colorControlHighlight" format="color" />
<!-- The color applied to framework buttons in their normal state. -->
<attr name="colorButtonNormal" format="color" />
<!-- The color applied to framework switch thumbs in their normal state. -->
<attr name="colorSwitchThumbNormal" format="color" />
(From \sdk\extras\android\support\v7\appcompat\res\values\attrs.xml)
I changed in express 4.0 the basic authentication with http-auth, the code is:
var auth = require('http-auth');
var basic = auth.basic({
realm: "Web."
}, function (username, password, callback) { // Custom authentication method.
callback(username === "userName" && password === "password");
}
);
app.get('/the_url', auth.connect(basic), routes.theRoute);
If you don't use Java 8 and you don't want to use a explicit loop for some reason, try MapUtils.populateMap
from Apache Commons.
Say you have a list of Pair
s.
List<ImmutablePair<String, String>> pairs = ImmutableList.of(
new ImmutablePair<>("A", "aaa"),
new ImmutablePair<>("B", "bbb")
);
And you now want a Map of the Pair
's key to the Pair
object.
Map<String, Pair<String, String>> map = new HashMap<>();
MapUtils.populateMap(map, pairs, new Transformer<Pair<String, String>, String>() {
@Override
public String transform(Pair<String, String> input) {
return input.getKey();
}
});
System.out.println(map);
gives output:
{A=(A,aaa), B=(B,bbb)}
That being said, a for
loop is maybe easier to understand. (This below gives the same output):
Map<String, Pair<String, String>> map = new HashMap<>();
for (Pair<String, String> pair : pairs) {
map.put(pair.getKey(), pair);
}
System.out.println(map);
This can be used in automation scripts if you don't need all tables in all schemas:
for table in $(psql -qAntc '\dt' | cut -d\| -f2); do
...
done
Same error for me and I didn't experience it until I downloaded OS X 10.9 (Mavericks). Sigh, another OS upgrade headache.
Here's how I fixed it (with homebrew):
brew update
in the terminal will prompt you to update the Xcode build tools)brew update
brew install postgresql
After that gem install pg
worked for me.
I'm surprised no one had mentioned a simple function that takes a string and a list.
function in_list(needle, hay)
{
var i, len;
for (i = 0, len = hay.length; i < len; i++)
{
if (hay[i] == needle) { return true; }
}
return false;
}
var alist = ["test"];
console.log(in_list("test", alist));
Starting from Java 8, you can also use parallelSort
which is useful if you have arrays containing a lot of elements.
Example:
public static void main(String[] args) {
String[] strings = { "x", "a", "c", "b", "y" };
Arrays.parallelSort(strings);
System.out.println(Arrays.toString(strings)); // [a, b, c, x, y]
}
If you want to ignore the case, you can use:
public static void main(String[] args) {
String[] strings = { "x", "a", "c", "B", "y" };
Arrays.parallelSort(strings, new Comparator<String>() {
@Override
public int compare(String o1, String o2) {
return o1.compareToIgnoreCase(o2);
}
});
System.out.println(Arrays.toString(strings)); // [a, B, c, x, y]
}
otherwise B
will be before a
.
If you want to ignore the trailing spaces during the comparison, you can use trim()
:
public static void main(String[] args) {
String[] strings = { "x", " a", "c ", " b", "y" };
Arrays.parallelSort(strings, new Comparator<String>() {
@Override
public int compare(String o1, String o2) {
return o1.trim().compareTo(o2.trim());
}
});
System.out.println(Arrays.toString(strings)); // [ a, b, c , x, y]
}
See:
A memory error means that your program has ran out of memory. This means that your program somehow creates too many objects.
In your example, you have to look for parts of your algorithm that could be consuming a lot of memory. I suspect that your program is given very long strings as inputs. Therefore, s[i:j+1]
could be the culprit, since it creates a new list. The first time you use it though, it is not necessary because you don't use the created list. You could try to see if the following helps:
if j + 1 < a:
sub_strings.append(s[i:j+1])
To replace the second list creation, you should definitely use a buffer object, as suggested by glglgl.
Also note that since you use if j >= i:
, you don't need to start your xrange
at 0. You can have:
for i in xrange(0, a):
for j in xrange(i, a):
# No need for if j >= i
A more radical alternative would be to try to rework your algorithm so that you don't pre-compute all possible sub-strings. Instead, you could simply compute the substring that are asked.
A gotcha with map::insert() is that it won't replace a value if the key already exists in the map. I've seen C++ code written by Java programmers where they have expected insert() to behave the same way as Map.put() in Java where values are replaced.
You could create a helper function:
def re_match_group(pattern, str, out_groups):
del out_groups[:]
result = re.match(pattern, str)
if result:
out_groups[:len(result.groups())] = result.groups()
return result
And then use it like this:
groups = []
if re_match_group("I love (\w+)", statement, groups):
print "He loves", groups[0]
elif re_match_group("Ich liebe (\w+)", statement, groups):
print "Er liebt", groups[0]
elif re_match_group("Je t'aime (\w+)", statement, groups):
print "Il aime", groups[0]
It's a little clunky, but it gets the job done.
If you want to enable unblur, you cannot just add the blur CSS to the body, you need to blur each visible child one level directly under the body and then remove the CSS to unblur. The reason is because of the "Cascade" in CSS, you cannot undo the cascading of the CSS blur effect for a child of the body. Also, to blur the body's background image you need to use the pseudo element :before
//HTML
<div id="fullscreen-popup" style="position:absolute;top:50%;left:50%;">
<div class="morph-button morph-button-overlay morph-button-fixed">
<button id="user-interface" type="button">MORE INFO</button>
<!--a id="user-interface" href="javascript:void(0)">popup</a-->
<div class="morph-content">
<div>
<div class="content-style-overlay">
<span class="icon icon-close">Close the overlay</span>
<h2>About Parsley</h2>
<p>Gumbo beet greens corn soko endive gumbo gourd. Parsley shallot courgette tatsoi pea sprouts fava bean collard greens dandelion okra wakame tomato. Dandelion cucumber earthnut pea peanut soko zucchini.</p>
<p>Turnip greens yarrow ricebean rutabaga endive cauliflower sea lettuce kohlrabi amaranth water spinach avocado daikon napa cabbage asparagus winter purslane kale. Celery potato scallion desert raisin horseradish spinach carrot soko. Lotus root water spinach fennel kombu maize bamboo shoot green bean swiss chard seakale pumpkin onion chickpea gram corn pea. Brussels sprout coriander water chestnut gourd swiss chard wakame kohlrabi beetroot carrot watercress. Corn amaranth salsify bunya nuts nori azuki bean chickweed potato bell pepper artichoke.</p>
<p>Gumbo beet greens corn soko endive gumbo gourd. Parsley shallot courgette tatsoi pea sprouts fava bean collard greens dandelion okra wakame tomato. Dandelion cucumber earthnut pea peanut soko zucchini.</p>
<p>Turnip greens yarrow ricebean rutabaga endive cauliflower sea lettuce kohlrabi amaranth water spinach avocado daikon napa cabbage asparagus winter purslane kale. Celery potato scallion desert raisin horseradish spinach carrot soko. Lotus root water spinach fennel kombu maize bamboo shoot green bean swiss chard seakale pumpkin onion chickpea gram corn pea. Brussels sprout coriander water chestnut gourd swiss chard wakame kohlrabi beetroot carrot watercress. Corn amaranth salsify bunya nuts nori azuki bean chickweed potato bell pepper artichoke.</p>
<p>Gumbo beet greens corn soko endive gumbo gourd. Parsley shallot courgette tatsoi pea sprouts fava bean collard greens dandelion okra wakame tomato. Dandelion cucumber earthnut pea peanut soko zucchini.</p>
<p>Turnip greens yarrow ricebean rutabaga endive cauliflower sea lettuce kohlrabi amaranth water spinach avocado daikon napa cabbage asparagus winter purslane kale. Celery potato scallion desert raisin horseradish spinach carrot soko. Lotus root water spinach fennel kombu maize bamboo shoot green bean swiss chard seakale pumpkin onion chickpea gram corn pea. Brussels sprout coriander water chestnut gourd swiss chard wakame kohlrabi beetroot carrot watercress. Corn amaranth salsify bunya nuts nori azuki bean chickweed potato bell pepper artichoke.</p>
</div>
</div>
</div>
</div>
</div>
//CSS
/* Blur - doesn't work on IE */
.blur-on, .blur-element {
-webkit-filter: blur(10px);
-moz-filter: blur(10px);
-o-filter: blur(10px);
-ms-filter: blur(10px);
filter: blur(10px);
-webkit-transition: all 5s linear;
transition : all 5s linear;
-moz-transition : all 5s linear;
-webkit-transition: all 5s linear;
-o-transition : all 5s linear;
}
.blur-off {
-webkit-filter: blur(0px) !important;
-moz-filter : blur(0px) !important;
-o-filter : blur(0px) !important;
-ms-filter : blur(0px) !important;
filter : blur(0px) !important;
}
.blur-bgimage:before {
content: "";
position: absolute;
height: 20%; width: 20%;
background-size: cover;
background: inherit;
z-index: -1;
transform: scale(5);
transform-origin: top left;
filter: blur(2px);
-moz-transform: scale(5);
-moz-transform-origin: top left;
-moz-filter: blur(2px);
-webkit-transform: scale(5);
-webkit-transform-origin: top left;
-webkit-filter: blur(2px);
-o-transform: scale(5);
-o-transform-origin: top left;
-o-filter: blur(2px);
transition : all 5s linear;
-moz-transition : all 5s linear;
-webkit-transition: all 5s linear;
-o-transition : all 5s linear;
}
//Javascript
function blurBehindPopup() {
if(blurredElements.length == 0) {
for(var i=0; i < document.body.children.length; i++) {
var element = document.body.children[i];
if(element.id && element.id != 'fullscreen-popup' && element.isVisible == true) {
classie.addClass( element, 'blur-element' );
blurredElements.push(element);
}
}
} else {
for(var i=0; i < blurredElements.length; i++) {
classie.addClass( blurredElements[i], 'blur-element' );
}
}
}
function unblurBehindPopup() {
for(var i=0; i < blurredElements.length; i++) {
classie.removeClass( blurredElements[i], 'blur-element' );
}
}
Maybe using cookielib.CookieJar can help you. For instance when posting to a page containing a form:
import urllib2
import urllib
from cookielib import CookieJar
cj = CookieJar()
opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj))
# input-type values from the html form
formdata = { "username" : username, "password": password, "form-id" : "1234" }
data_encoded = urllib.urlencode(formdata)
response = opener.open("https://page.com/login.php", data_encoded)
content = response.read()
EDIT:
After Piotr's comment I'll elaborate a bit. From the docs:
The CookieJar class stores HTTP cookies. It extracts cookies from HTTP requests, and returns them in HTTP responses. CookieJar instances automatically expire contained cookies when necessary. Subclasses are also responsible for storing and retrieving cookies from a file or database.
So whatever requests you make with your CookieJar
instance, all cookies will be handled automagically. Kinda like your browser does :)
I can only speak from my own experience and my 99% use-case for cookies is to receive a cookie and then need to send it with all subsequent requests in that session. The code above handles just that, and it does so transparently.
This example is from http://bootsnipp.com/snippets/featured/multi-level-dropdown-menu-bs3
Works for me in Bootstrap v3.1.1.
<div class="container">
<div class="row">
<h2>Multi level dropdown menu in Bootstrap 3</h2>
<hr>
<div class="dropdown">
<a id="dLabel" role="button" data-toggle="dropdown" class="btn btn-primary" data-target="#" href="/page.html">
Dropdown <span class="caret"></span>
</a>
<ul class="dropdown-menu multi-level" role="menu" aria-labelledby="dropdownMenu">
<li><a href="#">Some action</a></li>
<li><a href="#">Some other action</a></li>
<li class="divider"></li>
<li class="dropdown-submenu">
<a tabindex="-1" href="#">Hover me for more options</a>
<ul class="dropdown-menu">
<li><a tabindex="-1" href="#">Second level</a></li>
<li class="dropdown-submenu">
<a href="#">Even More..</a>
<ul class="dropdown-menu">
<li><a href="#">3rd level</a></li>
<li><a href="#">3rd level</a></li>
</ul>
</li>
<li><a href="#">Second level</a></li>
<li><a href="#">Second level</a></li>
</ul>
</li>
</ul>
</div>
</div>
.dropdown-submenu {
position: relative;
}
.dropdown-submenu>.dropdown-menu {
top: 0;
left: 100%;
margin-top: -6px;
margin-left: -1px;
-webkit-border-radius: 0 6px 6px 6px;
-moz-border-radius: 0 6px 6px;
border-radius: 0 6px 6px 6px;
}
.dropdown-submenu:hover>.dropdown-menu {
display: block;
}
.dropdown-submenu>a:after {
display: block;
content: " ";
float: right;
width: 0;
height: 0;
border-color: transparent;
border-style: solid;
border-width: 5px 0 5px 5px;
border-left-color: #ccc;
margin-top: 5px;
margin-right: -10px;
}
.dropdown-submenu:hover>a:after {
border-left-color: #fff;
}
.dropdown-submenu.pull-left {
float: none;
}
.dropdown-submenu.pull-left>.dropdown-menu {
left: -100%;
margin-left: 10px;
-webkit-border-radius: 6px 0 6px 6px;
-moz-border-radius: 6px 0 6px 6px;
border-radius: 6px 0 6px 6px;
}
Strings are passed as reference types in .NET.
Reference types place a pointer on the stack, to the actual instance that resides on the managed heap. This is different to Value types, who hold their entire instance on the stack.
When a value type is passed as a parameter, the runtime creates a copy of the value on the stack and passes that value into a method. This is why integers must be passed with a 'ref' keyword to return an updated value.
When a reference type is passed, the runtime creates a copy of the pointer on the stack. That copied pointer still points to the original instance of the reference type.
The string type has an overloaded = operator which creates a copy of itself, instead of a copy of the pointer - making it behave more like a value type. However, if only the pointer was copied, a second string operation could accidently overwrite the value of a private member of another class causing some pretty nasty results.
As other posts have mentioned, the StringBuilder class allows for the creation of strings without the GC overhead.
Cannot comment anymore but voted it up and wanted to let folks know that "
works very well for the xml config files when forming regex expressions for RegexTransformer in Solr like so: regex=".*img src="(.*)".*"
using the escaped version instead of double-quotes.
The issue appears with parsing the JSON from request body, tipical for an invalid JSON. If you're using curl on windows, try escaping the json like -d "{"name":"value"}"
or even -d "{"""name""":"value"""}"
On the other hand you can ommit the content-type header in which case whetewer is sent will be converted to your String argument
below logic will fetch difference in months
(endDate.getFullYear()*12+endDate.getMonth())-(startDate.getFullYear()*12+startDate.getMonth())
DECLARE @isAvailable BIT = 0;
IF EXISTS(SELECT 1 FROM [User] WHERE (UserID = 20070022))
BEGIN
SET @isAvailable = 1
END
initially isAvailable boolean value is set to 0
I ran the code below, once with foo
taking the shared_ptr
by const&
and again with foo
taking the shared_ptr
by value.
void foo(const std::shared_ptr<int>& p)
{
static int x = 0;
*p = ++x;
}
int main()
{
auto p = std::make_shared<int>();
auto start = clock();
for (int i = 0; i < 10000000; ++i)
{
foo(p);
}
std::cout << "Took " << clock() - start << " ms" << std::endl;
}
Using VS2015, x86 release build, on my intel core 2 quad (2.4GHz) processor
const shared_ptr& - 10ms
shared_ptr - 281ms
The copy by value version was an order of magnitude slower.
If you are calling a function synchronously from the current thread, prefer the const&
version.
You didn't mention the fancy indexing capabilities of dataframes, e.g.:
>>> df = pd.DataFrame({"class":[1,1,1,2,2], "value":[1,2,3,4,5]})
>>> df[df["class"]==1].sum()
class 3
value 6
dtype: int64
>>> df[df["class"]==1].sum()["value"]
6
>>> df[df["class"]==1].count()["value"]
3
You could replace df["class"]==1
by another condition.
I had two charts.
<div id="barChart"></div>
<div id="bubbleChart"></div>
This removed all charts.
d3.select("svg").remove();
This worked for removing the existing bar chart, but then I couldn't re-add the bar chart after
d3.select("#barChart").remove();
Tried this. It not only let me remove the existing bar chart, but also let me re-add a new bar chart.
d3.select("#barChart").select("svg").remove();
var svg = d3.select('#barChart')
.append('svg')
.attr('width', width + margins.left + margins.right)
.attr('height', height + margins.top + margins.bottom)
.append('g')
.attr('transform', 'translate(' + margins.left + ',' + margins.top + ')');
Not sure if this is the correct way to remove, and re-add a chart in d3. It worked in Chrome, but have not tested in IE.
In Oracle, you could use rownum
to limit the number of rows returned. I am guessing similar construct exists in other SQLs as well. So, for the example you gave, you could limit the number of rows returned to 500001 and apply a count(*)
then:
SELECT (case when cnt > 500000 then 500000 else cnt end) myCnt
FROM (SELECT count(*) cnt FROM table WHERE rownum<=500001)
If you add the extension .SH
to the environment variable PATHEXT
, you will be able to run shell scripts from PowerShell by only using the script name with arguments:
PS> .\script.sh args
If you store your scripts in a directory that is included in your PATH environment variable, you can run it from anywhere, and omit the extension and path:
PS> script args
Note: sh.exe or another *nix shell must be associated with the .sh extension.
I know this is old and whatnot (and not exactly sure if it's a question), but after searching, I had success with this command for --onefile
:
pyinstaller.exe --onefile --windowed --icon=app.ico app.py
Google led me to this page while I was searching for an answer on how to set an icon for my .exe, so maybe it will help someone else.
The information here was found at this site: https://mborgerson.com/creating-an-executable-from-a-python-script
This will work for 2 or more lists; iterating through the list of lists, but using numpy addition to deal with elements of each list
import numpy as np
list1=[1, 2, 3]
list2=[4, 5, 6]
lists = [list1, list2]
list_sum = np.zeros(len(list1))
for i in lists:
list_sum += i
list_sum = list_sum.tolist()
[5.0, 7.0, 9.0]
This is the most restrictive and safest way I've found, as explained here for hypothetical ~/my/web/root/
directory for your web content:
~/my
, ~/my/web
, ~/my/web/root
):
chmod go-rwx DIR
(nobody other than owner can access content)chmod go+x DIR
(to allow "users" including _www to "enter" the dir)sudo chgrp -R _www ~/my/web/root
(all web content is now group _www)chmod -R go-rwx ~/my/web/root
(nobody other than owner can access web content)chmod -R g+rx ~/my/web/root
(all web content is now readable/executable/enterable by _www)All other solutions leave files open to other local users (who are part of the "staff" group as well as obviously being in the "o"/others group). These users may then freely browse and access DB configurations, source code, or other sensitive details in your web config files and scripts if such are part of your content. If this is not an issue for you, then by all means go with one of the simpler solutions.
datetime.datetime.now() - datetime.timedelta(0, 15 * 60)
timedelta
is a "change in time". It takes days as the first parameter and seconds in the second parameter. 15 * 60
seconds is 15 minutes.
Example of CSS Text Gradient
background-image: -moz-linear-gradient(top,#E605C1 0%,#3B113B 100%);
background-image: -webkit-linear-gradient(top,#E605C1 0%,#3B113B 100%);
background-image: -o-linear-gradient(top,#E605C1 0%,#3B113B 100%);
background-image: -ms-linear-gradient(top,#E605C1 0%,#3B113B 100%);
background-image: linear-gradient(top,#E605C1 0%,#3B113B 100%);
-webkit-background-clip: text;
-webkit-text-fill-color: transparent;
position:relative;
display:inline-block; /*required*/
Online generator textgradient.com
You need to stringify the json, not calling toString
var buf = Buffer.from(JSON.stringify(obj));
And for converting string to json obj :
var temp = JSON.parse(buf.toString());
Have a look at C++11 Features (Modern C++)
and section "Quick Reference Guide to Visual C++ Version Numbers" ...
This may do what you want:
find /dev \( ! -name /dev -prune \) -type f -print
Just use jQuery's attr()
method
$(this).closest("tr").next().show().find('.longboxsmall').attr('disabled', 'disabled');
You could fill the C Column with variations on the following formula:
=IF(ISERROR(MATCH(A1,$B:$B,0)),"",A1)
Then C would only contain values that were in A and C.
If you completely want to clear the session you can use this:
session_unset();
session_destroy();
Actually both are not neccessary but it does not hurt.
If you want to clear only a specific part I think you need this:
unset($_SESSION['Products']);
//or
$_SESSION['Products'] = "";
depending on what you need.
Yes, if bar is not None
is more explicit, and thus better, assuming it is indeed what you want. That's not always the case, there are subtle differences: if not bar:
will execute if bar
is any kind of zero or empty container, or False
.
Many people do use not bar
where they really do mean bar is not None
.
So in terms of the PathMatchingResourcePatternResolver this is what is needed in the code:
@Autowired
ResourcePatternResolver resourceResolver;
public void getResources() {
resourceResolver.getResources("classpath:config/*.xml");
}
Any user whose login shell setting in /etc/passwd
is an interactive shell can login. I don't think there's a totally reliable way to tell if a program is an interactive shell; checking whether it's in /etc/shells
is probably as good as you can get.
Other users can also login, but the program they run should not allow them to get much access to the system. And users that aren't allowed to login at all should have /etc/false
as their shell -- this will just log them out immediately.
I don't know if I'm on the right path, but I got it working on ng 2.4.8 with the following form/submit tags:
<form #heroForm="ngForm" (ngSubmit)="add(newHero); heroForm.reset()">
<!-- place your input stuff here -->
<button type="submit" class="btn btn-default" [disabled]="!heroForm.valid">Add hero</button>
Seems to do the trick and sets the form's fields to "pristine" again.
i think i'd try with MAX something like this:
SELECT staff_id, max( date ) from owner.table group by staff_id
then link in your other columns:
select staff_id, site_id, pay_level, latest
from owner.table,
( SELECT staff_id, max( date ) latest from owner.table group by staff_id ) m
where m.staff_id = staff_id
and m.latest = date
I was/am in the same boat as you for different reasons (partly educational, partly constraints). I had to re-write all the containers of the standard library and the containers had to conform to the standard. That means, if I swap out my container with the stl version, the code would work the same. Which also meant that I had to re-write the iterators.
Anyway, I looked at EASTL. Apart from learning a ton about containers that I never learned all this time using the stl containers or through my undergraduate courses. The main reason is that EASTL is more readable than the stl counterpart (I found this is simply because of the lack of all the macros and straight forward coding style). There are some icky things in there (like #ifdefs for exceptions) but nothing to overwhelm you.
As others mentioned, look at cplusplus.com's reference on iterators and containers.
You can use window.opener, window.parent, or window.top to reference the window in question. From there, you just call the reload
method (e.g.: window.parent.location.reload()
).
However, as a caveat, you might have problems with window.opener
if you need to navigate away from the originally opened page since the reference will be lost.
Your setup.py
file needs setuptools
. Some Python packages used to use distutils
for distribution, but most now use setuptools
, a more complete package. Here is a question about the differences between them.
To install setuptools
on Debian:
sudo apt-get install python3-setuptools
For an older version of Python (Python 2.x):
sudo apt-get install python-setuptools
I don't like very much iterator's semantic, please consider this as an option. It's also safer as you publish less of your internal state
private Map<String, String> JSONtoMAP(String jsonString) {
JSONObject json = new JSONObject(jsonString);
Map<String, String> outMap = new HashMap<String, String>();
for (String curKey : (Set<String>) json.keySet()) {
outMap.put(curKey, json.getString(curKey));
}
return outMap;
}
I had a similar problem, trying to add a background image with inline css. No need to specify the images folder due to the way asset sync works.
This worked for me:
background-image: url('/assets/image.jpg');
I'm going to assume that your lack of quotes around the selector is just a transcription error, but you should check it anyway. Also, I don't see where you are actually giving the form an id. Usually you do this with the htmlAttributes parameter. I don't see you using the signature that has it. Again, though, if the form is submitting at all, this could be a transcription error.
If the selector and the id aren't the problem I'm suspicious that it might be because the click handler is added via markup when you use the Ajax BeginForm extension. You might try using $('form').trigger('submit') or in the worst case, have the click handler on the anchor create a hidden submit button in the form and click it. Or even create your own ajax submission using pure jQuery (which is probably what I would do).
Lastly, you should realize that by replacing the submit button, you're going to totally break this for people who don't have javascript enabled. The way around this is to also have a button hidden using a noscript tag and handle both AJAX and non-AJAX posts on the server.
BTW, it's consider standard practice, Microsoft not withstanding, to add the handlers via javascript not via markup. This keeps your javascript organized in one place so you can more easily see what's going on on the form. Here's an example of how I would use the trigger mechanism.
$(function() {
$('form#ajaxForm').find('a.submit-link').click( function() {
$('form#ajaxForm').trigger('submit');
}).show();
}
<% using (Ajax.BeginForm("Update", "Description", new { id = Model.Id },
new AjaxOptions
{
UpdateTargetId = "DescriptionDiv",
HttpMethod = "post"
}, new { id = "ajaxForm" } )) {%>
Description:
<%= Html.TextBox("Description", Model.Description) %><br />
<a href="#" class="submit-link" style="display: none;">Save</a>
<noscript>
<input type="submit" value="Save" />
</noscript>
<% } %>
Here is the solution I could find:
#wrapper {
float:right;
position:relative;
left:-50%;
text-align:left;
}
#wrapper ul {
list-style:none;
position:relative;
left:50%;
}
#wrapper li{
float:left;
position:relative;
}
your code $(".a, .b")
will work for below multiple elements (at a same time)
<element class="a">
<element class="b">
if you want to select element having a and b both class like <element class="a b">
than use js without coma
$('.a.b')
You can access the index attribute of a df using .index
:
In [277]:
df = pd.DataFrame({'a':np.arange(10), 'b':np.random.randn(10)})
df
Out[277]:
a b
0 0 0.293422
1 1 -1.631018
2 2 0.065344
3 3 -0.417926
4 4 1.925325
5 5 0.167545
6 6 -0.988941
7 7 -0.277446
8 8 1.426912
9 9 -0.114189
In [278]:
df.index
Out[278]:
Int64Index([0, 1, 2, 3, 4, 5, 6, 7, 8, 9], dtype='int64')
Generally, the backtrace is used to get the stack of the current thread, but if there is a necessity to get the stack trace of all the threads, use the following command.
thread apply all bt
// Create Customer class as follows:
export default class Customer {}
// Import the class
// no need for .js extension in path cos gets inferred automatically
import Customer from './path/to/Customer';
// or
const Customer = require('./path/to/Customer')
// Use the class
var customer = new Customer();
var name = customer.getName();
The simplest way is like this:
import os
retvalue = os.popen("ps -p 2993 -o time --no-headers").readlines()
print retvalue
This will be returned as a list
property
is a class behind @property
decorator.
You can always check this:
print(property) #<class 'property'>
I rewrote the example from help(property)
to show that the @property
syntax
class C:
def __init__(self):
self._x=None
@property
def x(self):
return self._x
@x.setter
def x(self, value):
self._x = value
@x.deleter
def x(self):
del self._x
c = C()
c.x="a"
print(c.x)
is functionally identical to property()
syntax:
class C:
def __init__(self):
self._x=None
def g(self):
return self._x
def s(self, v):
self._x = v
def d(self):
del self._x
prop = property(g,s,d)
c = C()
c.x="a"
print(c.x)
There is no difference how we use the property as you can see.
@property
decorator is implemented via property
class.So, the question is to explain the property
class a bit.
This line:
prop = property(g,s,d)
Was the initialization. We can rewrite it like this:
prop = property(fget=g,fset=s,fdel=d)
The meaning of fget
, fset
and fdel
:
| fget
| function to be used for getting an attribute value
| fset
| function to be used for setting an attribute value
| fdel
| function to be used for del'ing an attribute
| doc
| docstring
The next image shows the triplets we have, from the class property
:
__get__
, __set__
, and __delete__
are there to be overridden. This is the implementation of the descriptor pattern in Python.
In general, a descriptor is an object attribute with “binding behavior”, one whose attribute access has been overridden by methods in the descriptor protocol.
We can also use property setter
, getter
and deleter
methods to bind the function to property. Check the next example. The method s2
of the class C
will set the property doubled.
class C:
def __init__(self):
self._x=None
def g(self):
return self._x
def s(self, x):
self._x = x
def d(self):
del self._x
def s2(self,x):
self._x=x+x
x=property(g)
x=x.setter(s)
x=x.deleter(d)
c = C()
c.x="a"
print(c.x) # outputs "a"
C.x=property(C.g, C.s2)
C.x=C.x.deleter(C.d)
c2 = C()
c2.x="a"
print(c2.x) # outputs "aa"
Alternatively if you want to grab the private and public keys from a PuTTY formated key file you can use puttygen
on *nix systems. For most apt-based systems puttygen
is part of the putty-tools
package.
Outputting a private key from a PuTTY formated keyfile:
$ puttygen keyfile.pem -O private-openssh -o avdev.pvk
For the public key:
$ puttygen keyfile.pem -L
I don't know if my answer would make sense to many, but I too faced the same issue and the solution was outrageously simple. All I had to do was to open the program which I used to run the code as an administrator. (right-click --> Run as Administrator).
That was all.
If you see this error when running tests, make sure you have imported the module the pipe belongs to, e.g.:
beforeEach(async(() => {
TestBed.configureTestingModule({
imports: [CustomPipeModule],
declarations: [...],
providers: [...],
...
}).compileComponents();
}));
You Can try This To Run Command Then cmd
Exits
Process.Start("cmd", "/c YourCode")
You Can try This To Run The Command And Let cmd
Wait For More Commands
Process.Start("cmd", "/k YourCode")
Worked this out, turns out that android.R.color.black is not the same as Color.BLACK. Changed the code to:
Paint paint = new Paint();
paint.setColor(Color.WHITE);
paint.setStyle(Style.FILL);
canvas.drawPaint(paint);
paint.setColor(Color.BLACK);
paint.setTextSize(20);
canvas.drawText("Some Text", 10, 25, paint);
and it all works fine now!!
This is set background color on even and odd li:
li:nth-child(odd) { background: #ffffff; }
li:nth-child(even) { background: #80808030; }
Have a go with this, as this is how I would do it :)
SELECT *
FROM fab_scheduler
WHERE custid = '123456'
AND CURDATE() = DATE(DATE_ADD(eventdate, INTERVAL 1 DAY))
Force a method to get the struct (the constructor way).
From this post:
A good design is to make your type unexported, but provide an exported constructor function like
NewMyType()
in which you can properly initialize your struct / type. Also return an interface type and not a concrete type, and the interface should contain everything others want to do with your value. And your concrete type must implement that interface of course.
This can be done by simply making the type itself unexported. You can export the function NewSomething and even the fields Text and DefaultText, but just don't export the struct type something.
Another way to customize it for you own module is by using a Config struct to set default values (Option 5 in the link). Not a good way though.
Combining lindelof's and Gregg Lind's ideas:
last <- function(x) { tail(x, n = 1) }
Working at the prompt, I usually omit the n=
, i.e. tail(x, 1)
.
Unlike last
from the pastecs
package, head
and tail
(from utils
) work not only on vectors but also on data frames etc., and also can return data "without first/last n elements", e.g.
but.last <- function(x) { head(x, n = -1) }
(Note that you have to use head
for this, instead of tail
.)
$("#dialog").dialog({
autoOpen: false,
height: "auto",
width: "auto",
modal: true,
my: "center",
at: "center",
of: window
})
This solution does work but only because of the newer jQuery versions ignoring this completely and falling back to the default, which is exactly this. So you can just remove position: 'center' from your options if you just want the pop up to be centered.
Step 1 -
Create SSH keys on your linux system using below command
ssh-keygen -t rsa -b 4096 -C "your_email"
It will ask for passphrase and file name (default will be ~/.ssh/id_rsa, ~/.ssh/id_rsa.pub)
Step 2 -
Once files created add public key id_rsa.pub to github account ssh section.
Step 3 -
On your machine add private key id_rsa to ssh-agent using below command
ssh-add ~/.ssh/id_rsa
Step 4 -
Now add remote url [email protected]:user_name/repo_name.git to your local git repo using below command.
git remote remove origin
git remote add origin [email protected]:user_name/repo_name.git
Thats it.
Your solution is ok. only try it in this way:
files=$(grep -rl oldstr path) && echo $files | xargs sed....
so execute the xargs
only when grep return 0
, e.g. when found the string in some files.
One other way to work around this is using something like this when using mysqlclient in python.
suppose the data you want to enter is like this <ol><li><strong style="background-color: rgb(255, 255, 0);">Saurav\'s List</strong></li></ol>
. It contains both double qoute and single quote.
You can use the following method to escape the quotes:
statement = """ Update chats set html='{}' """.format(html_string.replace("'","\\\'"))
Note: three \ characters are needed to escape the single quote which is there in unformatted python string.
Add the following code in .htaccess file.
RewriteCond %{HTTP_HOST} !^www\.
RewriteRule ^(.*)$ http://www.%{HTTP_HOST}/$1 [R=301,L]
URLs redirect tutorial can be found from here - Redirect non-www to www & HTTP to HTTPS using .htaccess file
First, you may want to install glances:
sudo apt-get install python-pip build-essential python-dev lm-sensors
sudo pip install psutil logutils bottle batinfo https://bitbucket.org/gleb_zhulik/py3sensors/get/tip.tar.gz zeroconf netifaces pymdstat influxdb elasticsearch potsdb statsd pystache docker-py pysnmp pika py-cpuinfo bernhard
sudo pip install glances
Then run it in the terminal!
glances
In your Python code, add at the begin of the file, the following:
import os
import gc # Garbage Collector
After using the "Big" variable (for example: myBigVar) for which, you would like to release memory, write in your python code the following:
del myBigVar
gc.collect()
In another terminal, run your python code and observe in the "glances" terminal, how the memory is managed in your system!
Good luck!
P.S. I assume you are working on a Debian or Ubuntu system
Use this query to create the new table with the values from existing table
CREATE TABLE New_Table_name AS SELECT * FROM Existing_table_Name;
Now you can get all the values from existing table into newly created table.
Angular 8
simply use clear()
method on formArrays :
(this.invoiceForm.controls['other_Partners'] as FormArray).clear();
I took Mr. Fooz's code and also added Arlen's solution too and here are the timings that I've gotten for Octave:
clc; clear all;
V = rand(1024*1024*32,1);
N = 10;
tic; for i=1:N, V1 = V/norm(V); end; toc % 7.0 s
tic; for i=1:N, V2 = V/sqrt(sum(V.*V)); end; toc % 6.4 s
tic; for i=1:N, V3 = V/sqrt(V'*V); end; toc % 5.5 s
tic; for i=1:N, V4 = V/sqrt(sum(V.^2)); end; toc % 6.6 s
tic; for i=1:N, V1 = V/norm(V); end; toc % 7.1 s
tic; for i=1:N, d = 1/norm(V); V1 = V*d;end; toc % 4.7 s
Then, because of something I'm currently looking at, I tested out this code for ensuring that each row sums to 1:
clc; clear all;
m = 2048;
V = rand(m);
N = 100;
tic; for i=1:N, V1 = V ./ (sum(V,2)*ones(1,m)); end; toc % 8.2 s
tic; for i=1:N, V2 = bsxfun(@rdivide, V, sum(V,2)); end; toc % 5.8 s
tic; for i=1:N, V3 = bsxfun(@rdivide, V, V*ones(m,1)); end; toc % 5.7 s
tic; for i=1:N, V4 = V ./ (V*ones(m,m)); end; toc % 77.5 s
tic; for i=1:N, d = 1./sum(V,2);V5 = bsxfun(@times, V, d); end; toc % 2.83 s
tic; for i=1:N, d = 1./(V*ones(m,1));V6 = bsxfun(@times, V, d);end; toc % 2.75 s
tic; for i=1:N, V1 = V ./ (sum(V,2)*ones(1,m)); end; toc % 8.2 s
If this is related to a form submission, use a hidden inputinside the form and change the hidden input value to this variable value. Then you can get that hidden input value in the php page and assign it to your php variable after form submission.
Update:
According to your edit, it seems you don't understand how javascript and php works. Javascript is a client side language, and php is a serverside language. Therefore you cannot execute javascript logic and use that variable value to a php variable when you execute relevant page in the server. You can run the relevant javascript logic after client browser process the web page returned from the web server (which has already executed the php code for the relevant page). After the execution of the javascript code and after assigning the relevant value to the relevant javascript variable, you can use form submission or ajax to send that javascript variable value to use by another php page (or a request to process and get the same php page).
$limit=5; // for exemple
$query = $this->getDoctrine()->getEntityManager()->createQuery(
'// your request')
->setMaxResults($limit);
$results = $query->getResult();
// Done
I have used the technique said above, still I found that the time given in the Code:Blocks IDE was more or less similar to the result obtained-(may be it will differ by little micro seconds)..
select u from UserGroup ug inner join ug.user u
where ug.group_id = :groupId
order by u.lastname
As a named query:
@NamedQuery(
name = "User.findByGroupId",
query =
"SELECT u FROM UserGroup ug " +
"INNER JOIN ug.user u WHERE ug.group_id = :groupId ORDER BY u.lastname"
)
Use paths in the HQL statement, from one entity to the other. See the Hibernate documentation on HQL and joins for details.
You can use find
with tabs-to-spaces
package for this.
First, install tabs-to-spaces
npm install -g tabs-to-spaces
then, run this command from the root directory of your project;
find . -name '*' -exec t2s --spaces 2 {} \;
This will replace every tab
character with 2 spaces
in every file.
Old version includes kafka-simple-consumer-shell.sh
(https://kafka.apache.org/downloads#1.1.1) which is convenient since we do not need cltr+c
to exit.
For example
kafka-simple-consumer-shell.sh --broker-list $BROKERIP:$BROKERPORT --topic $TOPIC1 --property print.key=true --property key.separator=":" --no-wait-at-logend
Simple assigning to window.location
or window.location.href
should be fine:
window.location = newUrl;
However, your new URL will cause the browser to load the new page, but it sounds like you'd like to modify the URL without leaving the current page. You have two options for this:
Use the URL hash. For example, you can go from example.com
to example.com#foo
without loading a new page. You can simply set window.location.hash
to make this easy. Then, you should listen to the HTML5 hashchange
event, which will be fired when the user presses the back button. This is not supported in older versions of IE, but check out jQuery BBQ, which makes this work in all browsers.
You could use HTML5 History to modify the path without reloading the page. This will allow you to change from example.com/foo
to example.com/bar
. Using this is easy:
window.history.pushState("example.com/foo");
When the user presses "back", you'll receive the window's popstate
event, which you can easily listen to (jQuery):
$(window).bind("popstate", function(e) { alert("location changed"); });
Unfortunately, this is only supported in very modern browsers, like Chrome, Safari, and the Firefox 4 beta.
Make sure your main app.js
includes the services on which it depends. For example:
/* App Module */
angular.module('myApp', ['productServices']).
.....
Use where
with a !=
operator in combination with whereNull
Code::where('to_be_used_by_user_id', '!=' , 2)->orWhereNull('to_be_used_by_user_id')->get()
void clearArray (char *input[]){
*input = ' ';
}
To sync the git repo with the submodule's head, in case that is really what you want, I found that removing the submodule and then readding it avoids the tinkering with the history. Unfortunately removing a submodule requires hacking rather than being a single git command, but doable.
Steps I followed to remove the submodule, inspired by https://gist.github.com/kyleturner/1563153:
Again, this can be useful if all you want is to point at the submodule's head again, and you haven't complicated things by needing to keep the local copy of the submodule intact. It assumes you have the submodule "right" as its own repo, wherever the origin of it is, and you just want to get back to properly including it as a submodule.
Note: always make a full copy of your project before engaging in these kinds of manipulation or any git command beyond simple commit or push. I'd advise that with all other answers as well, and as a general git guideline.
I have changed to your code with little modification will works well. Here is the code:
butangDonload.php
<?php
$file = "logo_ldg.png"; //Let say If I put the file name Bang.png
echo "<a href='download1.php?nama=".$file."'>download</a> ";
?>
download.php
<?php
$name= $_GET['nama'];
header('Content-Description: File Transfer');
header('Content-Type: application/force-download');
header("Content-Disposition: attachment; filename=\"" . basename($name) . "\";");
header('Content-Transfer-Encoding: binary');
header('Expires: 0');
header('Cache-Control: must-revalidate');
header('Pragma: public');
header('Content-Length: ' . filesize($name));
ob_clean();
flush();
readfile("your_file_path/".$name); //showing the path to the server where the file is to be download
exit;
?>
Here you need to show the path from where the file to be download. i.e. will just give the file name but need to give the file path for reading that file. So, it should be replaced by I have tested by using your code and modifying also will works.
Sometimes, this error pops up because of the kernel has reached its limit. Try to restart the kernel redo the necessary steps.
document.getElementsByClassName('btn-pageMenu')
delivers a nodeList. You should use: document.getElementsByClassName('btn-pageMenu')[0].style.display
(if it's the first element from that list you want to change.
If you want to change style.display
for all nodes loop through the list:
var elems = document.getElementsByClassName('btn-pageMenu');
for (var i=0;i<elems.length;i+=1){
elems[i].style.display = 'block';
}
to be complete: if you use jquery it is as simple as:
?$('.btn-pageMenu').css('display'???????????????????????????,'block');??????
Open $CATALINA_BASE/conf/web.xml
and find this
<!-- ==================== Default Session Configuration ================= -->
<!-- You can set the default session timeout (in minutes) for all newly -->
<!-- created sessions by modifying the value below. -->
<session-config>
<session-timeout>30</session-timeout>
</session-config>
all webapps implicitly inherit from this default web descriptor. You can override session-config as well as other settings defined there in your web.xml.
This is actually from my Tomcat 7 (Windows) but I think 5.5 conf is not very different
I'm not really sure if this adds anything but,
Caller saved means that the caller has to save the registers because they will be clobbered in the call and have no choice but to be left in a clobbered state after the call returns (for instance, the return value being in eax
for cdecl. It makes no sense for the return value to be restored to the value before the call by the callee, because it is a return value).
Callee saved means that the callee has to save the registers and then restore them at the end of the call because they have the guarantee to the caller of containing the same values after the function returns, and it is possible to restore them, even if they are clobbered at some point during the call.
The issue with the above definition though is that for instance on Wikipedia cdecl, it says eax
, ecx
and edx
are caller saved and rest are callee saved, this suggests that the caller must save all 3 of these registers, when it might not if none of these registers were used by the caller in the first place. In which case caller 'saved' becomes a misnomer, but 'call clobbered' still correctly applies. This is the same with 'the rest' being called callee saved. It implies that all other x86 registers will be saved and restored by the callee when this is not the case if some of the registers are never used in the call anyway. With cdecl, eax:edx
may be used to return a 64 bit value. I'm not sure why ecx
is also caller saved if needed, but it is.
Use the keys CtrlK,C to comment out the line and CtrlK,U to uncomment the line.
function checkMultiArrayValue($array) {
global $test;
foreach ($array as $key => $item) {
if(!empty($item) && is_array($item)) {
checkMultiArrayValue($item);
}else {
if($item)
$test[$key] = $item;
}
}
return $test;
}
$multiArray = array(
0 => array(
"country" => "",
"price" => 4,
"discount-price" => 0,
),);
$test = checkMultiArrayValue($multiArray);
echo "<pre>"
print_r($test);
Will return array who have index and value
/\{([^}]+)\}/
/ - delimiter
\{ - opening literal brace escaped because it is a special character used for quantifiers eg {2,3}
( - start capturing
[^}] - character class consisting of
^ - not
} - a closing brace (no escaping necessary because special characters in a character class are different)
+ - one or more of the character class
) - end capturing
\} - the closing literal brace
/ - delimiter
In reading through Beazley & Jones PCB, I have stumbled on an explicit and practical use-case for __getattr__
that helps answer the "when" part of the OP's question. From the book:
"The __getattr__()
method is kind of like a catch-all for attribute lookup. It's a method that gets called if code tries to access an attribute that doesn't exist." We know this from the above answers, but in PCB recipe 8.15, this functionality is used to implement the delegation design pattern. If Object A has an attribute Object B that implements many methods that Object A wants to delegate to, rather than redefining all of Object B's methods in Object A just to call Object B's methods, define a __getattr__()
method as follows:
def __getattr__(self, name):
return getattr(self._b, name)
where _b is the name of Object A's attribute that is an Object B. When a method defined on Object B is called on Object A, the __getattr__
method will be invoked at the end of the lookup chain. This would make code cleaner as well, since you do not have a list of methods defined just for delegating to another object.
Make sure if root project directory is coming up in sys.path output. If not, please add path of root project directory to sys.path.
I solved a problem I encountered in this link and I find out that there is a simple solution for your question. You could use router-link-active
instead in your styles.
@Component({
styles: [`.router-link-active { background-color: red; }`]
})
export class NavComponent {
}
It seems that your action needs k
but ModelBinder can not find it (from form, or request or view data or ..)
Change your action to this:
public ActionResult DetailsData(int? k)
{
EmployeeContext Ec = new EmployeeContext();
if (k != null)
{
Employee emp = Ec.Employees.Single(X => X.EmpId == k.Value);
return View(emp);
}
return View();
}
You can use union to joining rows.
select Name, count(*) as Count from yourTable group by Name
union all
select "SUM" as Name, count(*) as Count from yourTable
Setting readonly
on a widget only makes the input in the browser read-only. Adding a clean_sku
which returns instance.sku
ensures the field value will not change on form level.
def clean_sku(self):
if self.instance:
return self.instance.sku
else:
return self.fields['sku']
This way you can use model's (unmodified save) and avoid getting the field required error.
MySQL is hosting a webinar about EF in a few days... Look here: http://www.mysql.com/news-and-events/web-seminars/display-204.html
edit: That webinar is now at http://www.mysql.com/news-and-events/on-demand-webinars/display-od-204.html
closures are beautiful! they solve a lot of problems that come with anonymous functions, and make really elegant code possible (at least as long as we talk about php).
javascript programmers use closures all the time, sometimes even without knowing it, because bound variables aren't explicitly defined - that's what "use" is for in php.
there are better real-world examples than the above one. lets say you have to sort an multidimensional array by a sub-value, but the key changes.
<?php
function generateComparisonFunctionForKey($key) {
return function ($left, $right) use ($key) {
if ($left[$key] == $right[$key])
return 0;
else
return ($left[$key] < $right[$key]) ? -1 : 1;
};
}
$myArray = array(
array('name' => 'Alex', 'age' => 70),
array('name' => 'Enrico', 'age' => 25)
);
$sortByName = generateComparisonFunctionForKey('name');
$sortByAge = generateComparisonFunctionForKey('age');
usort($myArray, $sortByName);
usort($myArray, $sortByAge);
?>
warning: untested code (i don't have php5.3 installed atm), but it should look like something like that.
there's one downside: a lot of php developers may be a bit helpless if you confront them with closures.
to understand the nice-ty of closures more, i'll give you another example - this time in javascript. one of the problems is the scoping and the browser inherent asynchronity. especially, if it comes to window.setTimeout();
(or -interval). so, you pass a function to setTimeout, but you can't really give any parameters, because providing parameters executes the code!
function getFunctionTextInASecond(value) {
return function () {
document.getElementsByName('body')[0].innerHTML = value; // "value" is the bound variable!
}
}
var textToDisplay = prompt('text to show in a second', 'foo bar');
// this returns a function that sets the bodys innerHTML to the prompted value
var myFunction = getFunctionTextInASecond(textToDisplay);
window.setTimeout(myFunction, 1000);
myFunction returns a function with a kind-of predefined parameter!
to be honest, i like php a lot more since 5.3 and anonymous functions/closures. namespaces may be more important, but they're a lot less sexy.
Here's a CSS-only alternative. I set this up for a search field to get an effect similar to Firefox (& a hundred other apps.)
HTML
<div class="col-md-4">
<input class="form-control" type="search" />
<span class="glyphicon glyphicon-search"></span>
</div>
CSS
.form-control {
padding-right: 30px;
}
.form-control + .glyphicon {
position: absolute;
right: 0;
padding: 8px 27px;
}
There is no way in Selenium to read the request or response headers. You could do it by instructing your browser to connect through a proxy that records this kind of information.
The usual way to change the user agent for Firefox is to set the variable "general.useragent.override"
in your Firefox profile. Note that this is independent from Selenium.
You can direct Selenium to use a profile different from the default one, like this:
from selenium import webdriver
profile = webdriver.FirefoxProfile()
profile.set_preference("general.useragent.override", "whatever you want")
driver = webdriver.Firefox(profile)
With Chrome, what you want to do is use the user-agent
command line option. Again, this is not a Selenium thing. You can invoke Chrome at the command line with chrome --user-agent=foo
to set the agent to the value foo
.
With Selenium you set it like this:
from selenium import webdriver
from selenium.webdriver.chrome.options import Options
opts = Options()
opts.add_argument("user-agent=whatever you want")
driver = webdriver.Chrome(chrome_options=opts)
Both methods above were tested and found to work. I don't know about other browsers.
Selenium does not have methods to query the user agent from an instance of WebDriver
. Even in the case of Firefox, you cannot discover the default user agent by checking what general.useragent.override
would be if not set to a custom value. (This setting does not exist before it is set to some value.)
Once the browser is started, however, you can get the user agent by executing:
agent = driver.execute_script("return navigator.userAgent")
The agent
variable will contain the user agent.
Your regular expression most likely wants to be
/\nSUMMARY:(.*)$/g
A helpful little trick I like to use is to default assign on match with an array.
var arr = iCalContent.match(/\nSUMMARY:(.*)$/g) || [""]; //could also use null for empty value
return arr[0];
This way you don't get annoying type errors when you go to use arr
i got solution what you are getting as per imp help=y
it is mentioned that imp is only valid for TRANSPORT_TABLESPACE
as below:
Keyword Description (Default) Keyword Description (Default)
--------------------------------------------------------------------------
USERID username/password FULL import entire file (N)
BUFFER size of data buffer FROMUSER list of owner usernames
FILE input files (EXPDAT.DMP) TOUSER list of usernames
SHOW just list file contents (N) TABLES list of table names
IGNORE ignore create errors (N) RECORDLENGTH length of IO record
GRANTS import grants (Y) INCTYPE incremental import type
INDEXES import indexes (Y) COMMIT commit array insert (N)
ROWS import data rows (Y) PARFILE parameter filename
LOG log file of screen output CONSTRAINTS import constraints (Y)
DESTROY overwrite tablespace data file (N)
INDEXFILE write table/index info to specified file
SKIP_UNUSABLE_INDEXES skip maintenance of unusable indexes (N)
FEEDBACK display progress every x rows(0)
TOID_NOVALIDATE skip validation of specified type ids
FILESIZE maximum size of each dump file
STATISTICS import precomputed statistics (always)
RESUMABLE suspend when a space related error is encountered(N)
RESUMABLE_NAME text string used to identify resumable statement
RESUMABLE_TIMEOUT wait time for RESUMABLE
COMPILE compile procedures, packages, and functions (Y)
STREAMS_CONFIGURATION import streams general metadata (Y)
STREAMS_INSTANTIATION import streams instantiation metadata (N)
DATA_ONLY import only data (N)
The following keywords only apply to transportable tablespaces
TRANSPORT_TABLESPACE import transportable tablespace metadata (N)
TABLESPACES tablespaces to be transported into database
DATAFILES datafiles to be transported into database
TTS_OWNERS users that own data in the transportable tablespace set
So, Please create table space for your user:
CREATE TABLESPACE <tablespace name> DATAFILE <path to save, example: 'C:\ORACLEXE\APP\ORACLE\ORADATA\XE\ABC.dbf'> SIZE 100M AUTOEXTEND ON NEXT 100M MAXSIZE 10G EXTENT MANAGEMENT LOCAL UNIFORM SIZE 1M;
The short answer for this is, "because that's what the C++ standard specifies".
Note that you can always specify a constructor that's different from the default, like so:
class Shape {
Shape() {...} //default constructor
Shape(int h, int w) {....} //some custom constructor
};
class Rectangle : public Shape {
Rectangle(int h, int w) : Shape(h, w) {...} //you can specify which base class constructor to call
}
The default constructor of the base class is called only if you don't specify which one to call.
Just follow these steps to help change the default python to the newly upgrade python version. Worked well for me.
sudo apt-install python3.7
Install the latest version of python you wantcd /usr/bin
Enter the root directory where python is installedsudo unlink python
or sudo unlink python3
. Unlink the current default pythonsudo ln -sv /usr/bin/python3.7 python
Link the new downloaded python versionpython --version
Check the new python version and you're good to goYou can get a NodeList to iterate through by using getElementsByTagName()
, like this:
var lis = document.getElementById("navbar").getElementsByTagName("li");
You can test it out here. This is a NodeList not an array, but it does have a .length
and you can iterate over it like an array.
There are multiple problems here:
sqlcomm
was never executed. You have to call
sqlcomm.ExecuteNonQuery();
in order to execute your command.Here is a solution using OUTPUT parameters. This was tested with:
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER PROCEDURE [dbo].[Validate]
@a varchar(50),
@b varchar(50) OUTPUT
AS
BEGIN
DECLARE @b AS varchar(50) = (SELECT Password FROM dbo.tblUser WHERE Login = @a)
SELECT @b;
END
SqlConnection SqlConn = ...
var sqlcomm = new SqlCommand("Validate", SqlConn);
string returnValue = string.Empty;
try
{
SqlConn.Open();
sqlcomm.CommandType = CommandType.StoredProcedure;
SqlParameter param = new SqlParameter("@a", SqlDbType.VarChar);
param.Direction = ParameterDirection.Input;
param.Value = Username;
sqlcomm.Parameters.Add(param);
SqlParameter output = sqlcomm.Parameters.Add("@b", SqlDbType.VarChar);
ouput.Direction = ParameterDirection.Output;
sqlcomm.ExecuteNonQuery(); // This line was missing
returnValue = output.Value.ToString();
// ... the rest of code
} catch (SqlException ex) {
throw ex;
}
Latest and greatest way to do this:
Node supports file and buffer operations with the base64
encoding:
const fs = require('fs');
const contents = fs.readFileSync('/path/to/file.jpg', {encoding: 'base64'});
Or using the new promises API:
const fs = require('fs').promises;
const contents = await fs.readFile('/path/to/file.jpg', {encoding: 'base64'});
You can do this by using below code
<HorizontalScrollView
android:layout_width="match_parent"
android:layout_height="match_parent">
<ScrollView
android:layout_width="wrap_content"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
</LinearLayout>
</ScrollView>
</HorizontalScrollView>
Had the same issue with Ionic routing.
Simple solution is to use the name of the state - basically state.go(state name)
.state('tab.search', {
url: '/search',
views: {
'tab-search': {
templateUrl: 'templates/search.html',
controller: 'SearchCtrl'
}
}
})
And in controller you can use $state.go('tab.search');
I had to do this myself in a context of a web-extension. This web-extension injects some piece of UI into each page, and this UI lives inside an iframe
. The content inside the iframe
is dynamic, so I had to readjust the width and height of the iframe
itself.
I use React but the concept applies to every library.
Inside the iframe
I changed body
styles to have really big dimensions. This will allow the elements inside to lay out using all the necessary space. Making width
and height
100% didn't work for me (I guess because the iframe has a default width = 300px
and height = 150px
)
/* something like this */
body {
width: 99999px;
height: 99999px;
}
Then I injected all the iframe UI inside a div and gave it some styles
#ui-root {
display: 'inline-block';
}
After rendering my app inside this #ui-root
(in React I do this inside componentDidMount
) I compute the dimensions of this div like and sync them to the parent page using window.postMessage
:
let elRect = el.getBoundingClientRect()
window.parent.postMessage({
type: 'resize-iframe',
payload: {
width: elRect.width,
height: elRect.height
}
}, '*')
In the parent frame I do something like this:
window.addEventListener('message', (ev) => {
if(ev.data.type && ev.data.type === 'resize-iframe') {
iframe.style.width = ev.data.payload.width + 'px'
iframe.style.height = ev.data.payload.height + 'px'
}
}, false)
You can also use another built-in template default_if_none
{{ profile.user.first_name|default_if_none:"--" }}
I'm exceptionally new to VBScript, so this may not be considered best practice or there may be a reason it shouldn't be done this that way I'm not yet aware of, but this is the solution I came up with to trim down the amount of error logging code in my main code block.
Dim oConn, connStr
Set oConn = Server.CreateObject("ADODB.Connection")
connStr = "Provider=SQLOLEDB;Server=XX;UID=XX;PWD=XX;Databse=XX"
ON ERROR RESUME NEXT
oConn.Open connStr
If err.Number <> 0 Then : showError() : End If
Sub ShowError()
'You could write the error details to the console...
errDetail = "<script>" & _
"console.log('Description: " & err.Description & "');" & _
"console.log('Error number: " & err.Number & "');" & _
"console.log('Error source: " & err.Source & "');" & _
"</script>"
Response.Write(errDetail)
'...you could display the error info directly in the page...
Response.Write("Error Description: " & err.Description)
Response.Write("Error Source: " & err.Source)
Response.Write("Error Number: " & err.Number)
'...or you could execute additional code when an error is thrown...
'Insert error handling code here
err.clear
End Sub
The compiler is already telling you, it's not value
but variable
. You are looking for -Wno-unused-variable
. Also, try g++ --help=warnings
to see a list of available options.
For Android, I previously used tPacketCapture but it didn't work well for an app streaming some video. I'm now using Shark. You need to be root to use it though.
It uses TCPDump (check the arguments you can pass) and creates a pcap file that can be read by Wireshark. The default arguments are usually good enough for me.
InputProperty[] ip = new InputProperty[nvPairs.Length];
Or, you can use a list like so:
List<InputProperty> list = new List<InputProperty>();
InputProperty ip = new (..);
list.Add(ip);
update.items = list.ToArray();
Another thing I'd like to point out, in C# you can delcare your int variable use in a for loop right inside the loop:
for(int i = 0; i<nvPairs.Length;i++
{
.
.
}
And just because I'm in the mood, here's a cleaner way to do this method IMO:
private Update BuildMetaData(MetaData[] nvPairs)
{
Update update = new Update();
var ip = new List<InputProperty>();
foreach(var nvPair in nvPairs)
{
if (nvPair == null) break;
var inputProp = new InputProperty
{
Name = "udf:" + nvPair.Name,
Val = nvPair.Value
};
ip.Add(inputProp);
}
update.Items = ip.ToArray();
return update;
}
You can try
Subject[] subjects = new Subject[2];
subjects[0] = new Subject{....};
subjects[1] = new Subject{....};
alternatively you can use List
List<Subject> subjects = new List<Subject>();
subjects.add(new Subject{....});
subjects.add(new Subject{....});
To install version 7+ of Babel run:
npm install -g @babel/cli
npm install -g @babel/core
like this?
DF <- data.frame("a" = as.character(0:5),
"b" = paste(0:5, ".1", sep = ""),
"c" = paste(10:15),
stringsAsFactors = FALSE)
DF <- apply(DF, 2, as.numeric)
If there are "real" characters in dataframe like 'a' 'b' 'c', i would recommend answer from davsjob.
In the click event "this" is the a tag that was clicked
jQuery('.class1 a').click( function() {
var divToSlide = $(this).parent().find(".class2");
if (divToSlide.is(":hidden")) {
divToSlide.slideDown("slow");
} else {
divToSlide.slideUp();
}
});
There's multiple ways to get to the div though you could also use .siblings, .next etc
I recently published a jQuery plugin which allows you to make PHP function calls in various ways: https://github.com/Xaxis/jquery.php
Simple example usage:
// Both .end() and .data() return data to variables
var strLenA = P.strlen('some string').end();
var strLenB = P.strlen('another string').end();
var totalStrLen = strLenA + strLenB;
console.log( totalStrLen ); // 25
// .data Returns data in an array
var data1 = P.crypt("Some Crypt String").data();
console.log( data1 ); // ["$1$Tk1b01rk$shTKSqDslatUSRV3WdlnI/"]
Updating directly the item passed as argument should do the job, but I am maybe missing something here ?
updateItem(item){
this.itemService.getUpdate(item.id)
.subscribe(updatedItem => {
item = updatedItem;
});
}
EDIT : If you really have no choice but to loop through your entire array to update your item, use findIndex :
let itemIndex = this.items.findIndex(item => item.id == retrievedItem.id);
this.items[itemIndex] = retrievedItem;
Here's an example that puts the Now()
value in column A.
Sub move()
Dim i As Integer
Dim sh1 As Worksheet
Dim sh2 As Worksheet
Dim nextRow As Long
Dim copyRange As Range
Dim destRange As Range
Application.ScreenUpdating = False
Set sh1 = ActiveWorkbook.Worksheets("Sheet1")
Set sh2 = ActiveWorkbook.Worksheets("Sheet2")
Set copyRange = sh1.Range("A1:A5")
i = Application.WorksheetFunction.CountA(sh2.Range("B:B")) + 4
Set destRange = sh2.Range("B" & i)
destRange.Resize(1, copyRange.Rows.Count).Value = Application.Transpose(copyRange.Value)
destRange.Offset(0, -1).Value = Format(Now(), "MMM-DD-YYYY")
copyRange.Clear
Application.ScreenUpdating = True
End Sub
There are better ways of getting the last row in column B than using a While
loop, plenty of examples around here. Some are better than others but depend on what you're doing and what your worksheet structure looks like. I used one here which assumes that column B is ALL empty except the rows/records you're moving. If that's not the case, or if B1:B3
have some values in them, you'd need to modify or use another method. Or you could just use your loop, but I'd search for alternatives :)
<button (click)="dbgraph.displayTableGraph()">Graph</button>
<dbstats-graph #dbgraph></dbstats-graph>
Note the local variable #dbgraph
on the child component, which the parent can use to access its methods (dbgraph.displayTableGraph()
).
You can do injection on Directives, and it looks just like it does everywhere else.
app.directive('changeIt', ['myData', function(myData){
return {
restrict: 'C',
link: function (scope, element, attrs) {
scope.name = myData.name;
}
}
}]);
You need two loops to implement the Bubble Sort .
Sample code :
public static void bubbleSort(int[] numArray) {
int n = numArray.length;
int temp = 0;
for (int i = 0; i < n; i++) {
for (int j = 1; j < (n - i); j++) {
if (numArray[j - 1] > numArray[j]) {
temp = numArray[j - 1];
numArray[j - 1] = numArray[j];
numArray[j] = temp;
}
}
}
}
I usually do something like this:
Echo.%1 | findstr /C:"%2">nul && (
REM TRUE
) || (
REM FALSE
)
Example:
Echo.Hello world | findstr /C:"world">nul && (
Echo.TRUE
) || (
Echo.FALSE
)
Echo.Hello world | findstr /C:"World">nul && (Echo.TRUE) || (Echo.FALSE)
Output:
TRUE
FALSE
I don't know if this is the best way.
When using the .html()
method, a htmlString
must be the parameter. (source) Put your string inside a HTML tag and it should work or use .text()
as suggested by farzad.
Example:
<div class="demo-container">
<div class="demo-box">Demonstration Box</div>
</div>
<script type="text/javascript">
$("div.demo-container").html( "<p>All new content. <em>You bet!</em></p>" );
</script>
Have a look at agiletoolkit.org as this has a simple to use CRUD which supports 2,4,6,7,9,10 and 12 out of the box (uses Ajax to defender the grid when adding,deleting data and it integrates with jquery.
I would post some examples but on an iPad at the moment.
<script type="text/javascript">
function clearThis(target){
if (target.value === "[email protected]") {
target.value= "";
}
}
</script>
<input type="text" name="email" value="[email protected]" size="30" onfocus="clearThis(this)">
Try it out here: http://jsfiddle.net/2K3Vp/
You need to use the Scatter chart type instead of Line. That will allow you to define separate X values for each series.
This code creates a nice vertical scrollbar for me in Firefox and Chrome:
#answerform {
position: absolute;
border: 5px solid gray;
padding: 5px;
background: white;
width: 300px;
height: 400px;
overflow-y: scroll;
}
_x000D_
<div id='answerform'>
badger<br><br>badger<br><br>badger<br><br>badger<br><br>badger<br><br> mushroom
<br><br>mushroom<br><br> a badger<br><br>badger<br><br>badger<br><br>badger<br><br>badger<br><br>
</div>
_x000D_
Here is a JS fiddle demo proving the above works.
I encountered the same thing lately. it was just due to spaces when copying a script from a document to sql developer. I had to remove the spaces and the script ran.
Try this:
MERGE INTO table1 t1
USING
(
-- For more complicated queries you can use WITH clause here
SELECT * FROM table2
)t2
ON(t1.id = t2.id)
WHEN MATCHED THEN UPDATE SET
t1.name = t2.name,
t1.desc = t2.desc;
You can use Array.Fill
in .NET Core 2.0+ and .NET Standard 2.1+.
If you really only need to add the items in one array to another, the '+' operator is already overloaded to do that, incidentally:
a1 = [1,2,3,4,5]
a2 = [6,7,8,9]
a1 + a2
--> [1, 2, 3, 4, 5, 6, 7, 8, 9]
I am using this linq query for my application. if this match your requirement you can refer this. here i have joined(Left outer join) with 3 tables.
Dim result = (From csL In contractEntity.CSLogin.Where(Function(cs) cs.Login = login AndAlso cs.Password = password).DefaultIfEmpty
From usrT In contractEntity.UserType.Where(Function(uTyp) uTyp.UserTypeID = csL.UserTyp).DefaultIfEmpty ' <== makes join left join
From kunD In contractEntity.EmployeeMaster.Where(Function(kunDat) kunDat.CSLoginID = csL.CSLoginID).DefaultIfEmpty
Select New With {
.CSLoginID = csL.CSLoginID,
.UserType = csL.UserTyp}).ToList()
UPDATE: This solution is no longer valid. FQLs are deprecated since August 7th, 2016.
Also http://api.facebook.com/restserver.php?method=links.getStats&urls=http://www.techlila.com will show you all the data like 'Share Count', 'Like Count' and 'Comment Count' and total of all these.
Change the URL (i.e. http://www.techlila.com) as per your need.
This is the correct URL, I'm getting right results.
EDIT (May 2017): as of v2.9 you can make a graph API call where ID is the URL and select the 'engagement' field, below is a link with the example from the graph explorer.
This took a while to get right. I had this issue when cross-compiling in Ubuntu for an ARM target. I solved it with:
PATH=$PATH:/ccpath/bin CC=ccname-gcc AR=ccname-ar LD=ccname-ld CPPFLAGS="-nostdinc -I/ccrootfs/usr/include ..." LDFLAGS=-L/ccrootfs/usr/lib ./autogen.sh --build=`config.guess` --host=armv5tejl-unknown-linux-gnueabihf
Notice CFLAGS is not used with autogen.sh/configure, using it gave me the error: "configure: error: C compiler cannot create executables". In the build environment I was using an autogen.sh script was provided, if you don't have an autogen.sh script substitute ./autogen.sh with ./configure in the command above. I ran config.guess on the target system to get the --host parameter.
After successfully running autogen.sh/configure, compile with:
PATH=$PATH:/ccpath/bin CC=ccname-gcc AR=ccname-ar LD=ccname-ld CPPFLAGS="-nostdinc -I/ccrootfs/usr/include ..." LDFLAGS=-L/ccrootfs/usr/lib CFLAGS="-march=... -mcpu=... etc." make
The CFLAGS I chose to use were: "-march=armv5te -fno-tree-vectorize -mthumb-interwork -mcpu=arm926ej-s". It will take a while to get all of the include directories set up correctly: you might want some includes pointing to your cross-compiler and some pointing to your root file system includes, and there will likely be some conflicts.
I'm sure this is not the perfect answer. And I am still seeing some include directories pointing to / and not /ccrootfs in the Makefiles. Would love to know how to correct this. Hope this helps someone.
You cannot calculate the differences separately ... what difference would that yield for 7:59 and 8:00 o'clock? Try
import time
time.time()
which gives you the seconds since the start of the epoch.
You can then get the intermediate time with something like
timestamp1 = time.time()
# Your code here
timestamp2 = time.time()
print "This took %.2f seconds" % (timestamp2 - timestamp1)
One line is enough:
var x = '|f|oo||';
var y = x.replace(/^\|+|\|+$/g, '');
document.write(x + '<br />' + y);
_x000D_
^\|+ beginning of the string, pipe, one or more times
| or
\|+$ pipe, one or more times, end of the string
A general solution:
function trim (s, c) {
if (c === "]") c = "\\]";
if (c === "\\") c = "\\\\";
return s.replace(new RegExp(
"^[" + c + "]+|[" + c + "]+$", "g"
), "");
}
chars = ".|]\\";
for (c of chars) {
s = c + "foo" + c + c + "oo" + c + c + c;
console.log(s, "->", trim(s, c));
}
_x000D_
With the atom editor, you just need to install the git-plus package.
Found one solution for WIFI (works for Android 4.3, 4.4):
Use
.wrapper:after {
content : '\n';
}
Much like solution provided by Roko. It allows to insert/change content using : after and :before psuedo. For details check http://www.quirksmode.org/css/content.html
Similar to other syntax above but for learning - can you sort by column names?
sort(colnames(test[1:ncol(test)] ))
In this post I described possible solution for Solaris case when neither SO_NOSIGPIPE nor MSG_NOSIGNAL is available.
Instead, we have to temporarily suppress SIGPIPE in the current thread that executes library code. Here's how to do this: to suppress SIGPIPE we first check if it is pending. If it does, this means that it is blocked in this thread, and we have to do nothing. If the library generates additional SIGPIPE, it will be merged with the pending one, and that's a no-op. If SIGPIPE is not pending then we block it in this thread, and also check whether it was already blocked. Then we are free to execute our writes. When we are to restore SIGPIPE to its original state, we do the following: if SIGPIPE was pending originally, we do nothing. Otherwise we check if it is pending now. If it does (which means that out actions have generated one or more SIGPIPEs), then we wait for it in this thread, thus clearing its pending status (to do this we use sigtimedwait() with zero timeout; this is to avoid blocking in a scenario where malicious user sent SIGPIPE manually to a whole process: in this case we will see it pending, but other thread may handle it before we had a change to wait for it). After clearing pending status we unblock SIGPIPE in this thread, but only if it wasn't blocked originally.
Example code at https://github.com/kroki/XProbes/blob/1447f3d93b6dbf273919af15e59f35cca58fcc23/src/libxprobes.c#L156
Both perform shallow copies as @PatrickDesjardins said (despite the many misled souls who think that CopyTo
does a deep copy).
However, CopyTo
allows you to copy one array to a specified index in the destination array, giving it significantly more flexibility.
There are two solutions for this are :-
(1) do not put onClick in xml
(2) remove
button.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
}
});
and put
public void setLogin(View v) {
// Your code here
}
As of Sept 2020
, if you want to get the SHA-1 fingerprint of keystore certificate of Release
. Simply open up your Google Play Developer Console
and open the App Signing
tab.
You need to put your main code on the OnStart
method.
This other SO answer of mine might help.
You will need to put some code to enable debugging within visual-studio while maintaining your application valid as a windows-service. This other SO thread cover the issue of debugging a windows-service.
EDIT:
Please see also the documentation available here for the OnStart
method at the MSDN where one can read this:
Do not use the constructor to perform processing that should be in OnStart. Use OnStart to handle all initialization of your service. The constructor is called when the application's executable runs, not when the service runs. The executable runs before OnStart. When you continue, for example, the constructor is not called again because the SCM already holds the object in memory. If OnStop releases resources allocated in the constructor rather than in OnStart, the needed resources would not be created again the second time the service is called.
If you have good reason to believe that a significant set of objects - particularly those you suspect to be in generations 1 and 2 - are now eligible for garbage collection, and that now would be an appropriate time to collect in terms of the small performance hit.
A good example of this is if you've just closed a large form. You know that all the UI controls can now be garbage collected, and a very short pause as the form is closed probably won't be noticeable to the user.
UPDATE 2.7.2018
As of .NET 4.5 - there is GCLatencyMode.LowLatency
and GCLatencyMode.SustainedLowLatency
. When entering and leaving either of these modes, it is recommended that you force a full GC with GC.Collect(2, GCCollectionMode.Forced)
.
As of .NET 4.6 - there is the GC.TryStartNoGCRegion
method (used to set the read-only value GCLatencyMode.NoGCRegion
). This can itself, perform a full blocking garbage collection in an attempt to free enough memory, but given we are disallowing GC for a period, I would argue it is also a good idea to perform full GC before and after.
Source: Microsoft engineer Ben Watson's: Writing High-Performance .NET Code, 2nd Ed. 2018.
See:
This problem can also come up when you don't have your constructor immediately call super.
So this will work:
public Employee(String name, String number, Date date)
{
super(....)
}
But this won't:
public Employee(String name, String number, Date date)
{
// an example of *any* code running before you call super.
if (number < 5)
{
number++;
}
super(....)
}
The reason the 2nd example fails is because java is trying to implicitely call
super(name,number,date)
as the first line in your constructor.... So java doesn't see that you've got a call to super going on later in the constructor. It essentially tries to do this:
public Employee(String name, String number, Date date)
{
super(name, number, date);
if (number < 5)
{
number++;
}
super(....)
}
So the solution is pretty easy... Just don't put code before your super call ;-) If you need to initialize something before the call to super, do it in another constructor, and then call the old constructor... Like in this example pulled from this StackOverflow post:
public class Foo
{
private int x;
public Foo()
{
this(1);
}
public Foo(int x)
{
this.x = x;
}
}
>>> s = pd.Series([1,2,3,4,np.NaN,5,np.NaN])
>>> s[~s.isnull()]
0 1
1 2
2 3
3 4
5 5
update or even better approach as @DSM suggested in comments, using pandas.Series.dropna()
:
>>> s.dropna()
0 1
1 2
2 3
3 4
5 5
System.out.println(System.getProperty("java.vendor"));
System.out.println(System.getProperty("java.vendor.url"));
System.out.println(System.getProperty("java.version"));
Sun Microsystems Inc.
http://java.sun.com/
1.6.0_11
http://docs.oracle.com/javase/tutorial/essential/environment/sysprop.html
The solution is to install an extension that lifts the block that Chrome does, for example:
Access Control-Allow-Origin - Unblock (https://add0n.com/access-control.html?version=0.1.5&type=install).
If you want to check if a string has a numeric value, use this code:
$a = "44.4"
$b = "ad"
$rtn = ""
[double]::TryParse($a,[ref]$rtn)
[double]::TryParse($b,[ref]$rtn)
Credits go here
because of two way binding, To prevent error of:
ExpressionChangedAfterItHasBeenCheckedError: Expression has changed after it was
checked.
you can call a function to change model like this:
<input [ngModel]="item.value"
(ngModelChange)="getNewValue($event)" name="inputField" type="text" />
import { UseMyPipeToFormatThatValuePipe } from './path';
constructor({
private UseMyPipeToFormatThatValue: UseMyPipeToFormatThatValuePipe,
})
getNewValue(ev: any): any {
item.value= this.useMyPipeToFormatThatValue.transform(ev);
}
it'll be good if there is a better solution to prevent this error.
Can you provide an example of what did not work? As you likely know, the Wiring language is based on C/C++, however, not all of C++ is supported.
Whether you are allowed to create classes in the Wiring IDE, I'm not sure (my first Arduino is in the mail right now). I do know that if you wrote a C++ class, compiled it using AVR-GCC, then loaded it on your Arduino using AVRDUDE, it would work.
clear
echo "Welcome to input associative array 2.0! (Spaces in keys and values now supported)"
unset array
declare -A array
read -p 'Enter number for array size: ' num
for (( i=0; i < num; i++ ))
do
echo -n "(pair $(( $i+1 )))"
read -p ' Enter key: ' k
read -p ' Enter value: ' v
echo " "
array[$k]=$v
done
echo " "
echo "The keys are: " ${!array[@]}
echo "The values are: " ${array[@]}
echo " "
echo "Key <-> Value"
echo "-------------"
for i in "${!array[@]}"; do echo $i "<->" ${array[$i]}; done
echo " "
echo "Thanks for using input associative array 2.0!"
Output:
Welcome to input associative array 2.0! (Spaces in keys and values now supported)
Enter number for array size: 4
(pair 1) Enter key: Key Number 1
Enter value: Value#1
(pair 2) Enter key: Key Two
Enter value: Value2
(pair 3) Enter key: Key3
Enter value: Val3
(pair 4) Enter key: Key4
Enter value: Value4
The keys are: Key4 Key3 Key Number 1 Key Two
The values are: Value4 Val3 Value#1 Value2
Key <-> Value
-------------
Key4 <-> Value4
Key3 <-> Val3
Key Number 1 <-> Value#1
Key Two <-> Value2
Thanks for using input associative array 2.0!
clear
echo "Welcome to input associative array! (written by mO extraordinaire!)"
unset array
declare -A array
read -p 'Enter number for array size: ' num
for (( i=0; i < num; i++ ))
do
read -p 'Enter key and value separated by a space: ' k v
array[$k]=$v
done
echo " "
echo "The keys are: " ${!array[@]}
echo "The values are: " ${array[@]}
echo " "
echo "Key <-> Value"
echo "-------------"
for i in ${!array[@]}; do echo $i "<->" ${array[$i]}; done
echo " "
echo "Thanks for using input associative array!"
Output:
Welcome to input associative array! (written by mO extraordinaire!)
Enter number for array size: 10
Enter key and value separated by a space: a1 10
Enter key and value separated by a space: b2 20
Enter key and value separated by a space: c3 30
Enter key and value separated by a space: d4 40
Enter key and value separated by a space: e5 50
Enter key and value separated by a space: f6 60
Enter key and value separated by a space: g7 70
Enter key and value separated by a space: h8 80
Enter key and value separated by a space: i9 90
Enter key and value separated by a space: j10 100
The keys are: h8 a1 j10 g7 f6 e5 d4 c3 i9 b2
The values are: 80 10 100 70 60 50 40 30 90 20
Key <-> Value
-------------
h8 <-> 80
a1 <-> 10
j10 <-> 100
g7 <-> 70
f6 <-> 60
e5 <-> 50
d4 <-> 40
c3 <-> 30
i9 <-> 90
b2 <-> 20
Thanks for using input associative array!
I have found one difference, for ES6/ES2015. You cannot return an object using the shorthand arrow function syntax, unless you surround the object with new Object()
.
> [1, 2, 3].map(v => {n: v});
[ undefined, undefined, undefined ]
> [1, 2, 3].map(v => new Object({n: v}));
[ { n: 1 }, { n: 2 }, { n: 3 } ]
This is because the compiler is confused by the {}
brackets and thinks n: i
is a label: statement construct; the semicolon is optional so it doesn't complain about it.
If you add another property to the object it will finally throw an error.
$ node -e "[1, 2, 3].map(v => {n: v, m: v+1});"
[1, 2, 3].map(v => {n: v, m: v+1});
^
SyntaxError: Unexpected token :
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()
Consider using a table
if adding multiple screenshots and want to align them using tabular data for improved accessibility as shown here:
If your markdown parser supports it you could also add the role="presentation"
WIA-ARIA attribute to the TABLE element and omit the th
tags.
quux00's answer only tells about comparing basic types.
If you need to compare types you defined, you shouldn't use reflect.TypeOf(xxx)
. Instead, use reflect.TypeOf(xxx).Kind()
.
There are two categories of types:
Here is a full example:
type MyFloat float64
type Vertex struct {
X, Y float64
}
type EmptyInterface interface {}
type Abser interface {
Abs() float64
}
func (v Vertex) Abs() float64 {
return math.Sqrt(v.X*v.X + v.Y*v.Y)
}
func (f MyFloat) Abs() float64 {
return math.Abs(float64(f))
}
var ia, ib Abser
ia = Vertex{1, 2}
ib = MyFloat(1)
fmt.Println(reflect.TypeOf(ia))
fmt.Println(reflect.TypeOf(ia).Kind())
fmt.Println(reflect.TypeOf(ib))
fmt.Println(reflect.TypeOf(ib).Kind())
if reflect.TypeOf(ia) != reflect.TypeOf(ib) {
fmt.Println("Not equal typeOf")
}
if reflect.TypeOf(ia).Kind() != reflect.TypeOf(ib).Kind() {
fmt.Println("Not equal kind")
}
ib = Vertex{3, 4}
if reflect.TypeOf(ia) == reflect.TypeOf(ib) {
fmt.Println("Equal typeOf")
}
if reflect.TypeOf(ia).Kind() == reflect.TypeOf(ib).Kind() {
fmt.Println("Equal kind")
}
The output would be:
main.Vertex
struct
main.MyFloat
float64
Not equal typeOf
Not equal kind
Equal typeOf
Equal kind
As you can see, reflect.TypeOf(xxx)
returns the direct types which you might want to use, while reflect.TypeOf(xxx).Kind()
returns the basic types.
Here's the conclusion. If you need to compare with basic types, use reflect.TypeOf(xxx).Kind()
; and if you need to compare with self-defined types, use reflect.TypeOf(xxx)
.
if reflect.TypeOf(ia) == reflect.TypeOf(Vertex{}) {
fmt.Println("self-defined")
} else if reflect.TypeOf(ia).Kind() == reflect.Float64 {
fmt.Println("basic types")
}
Maybe you'd find Redux suiting your needs. It's no overkill and comes packed solely with bare features most of us would require. The dev and contributors were very strict on what code was contributed.
This is the official page
DECLARE @TotalDays INT,@WorkDays INT
DECLARE @ReducedDayswithEndDate INT
DECLARE @WeekPart INT
DECLARE @DatePart INT
SET @TotalDays= DATEDIFF(day, @StartDate, @EndDate) +1
SELECT @ReducedDayswithEndDate = CASE DATENAME(weekday, @EndDate)
WHEN 'Saturday' THEN 1
WHEN 'Sunday' THEN 2
ELSE 0 END
SET @TotalDays=@TotalDays-@ReducedDayswithEndDate
SET @WeekPart=@TotalDays/7;
SET @DatePart=@TotalDays%7;
SET @WorkDays=(@WeekPart*5)+@DatePart
RETURN @WorkDays
freddiefujiwara's answer is pretty good but I also needed to support relative URLs within Internet Explorer. I came up with the following solution:
function getLocation(href) {
var location = document.createElement("a");
location.href = href;
// IE doesn't populate all link properties when setting .href with a relative URL,
// however .href will return an absolute URL which then can be used on itself
// to populate these additional fields.
if (location.host == "") {
location.href = location.href;
}
return location;
};
Now use it to get the needed properties:
var a = getLocation('http://example.com/aa/bb/');
document.write(a.hostname);
document.write(a.pathname);
Example:
function getLocation(href) {
var location = document.createElement("a");
location.href = href;
// IE doesn't populate all link properties when setting .href with a relative URL,
// however .href will return an absolute URL which then can be used on itself
// to populate these additional fields.
if (location.host == "") {
location.href = location.href;
}
return location;
};
var urlToParse = 'http://example.com/aa/bb/',
a = getLocation(urlToParse);
document.write('Absolute URL: ' + urlToParse);
document.write('<br />');
document.write('Hostname: ' + a.hostname);
document.write('<br />');
document.write('Pathname: ' + a.pathname);
_x000D_
You can always avoid fiddling around with the compiler by declaring the array as linear and doing the (row,col) to array index calculation by yourself.
static uint8_t l_matrix[200];
void test(int row, int col, uint8_t val)
{
uint8_t* matrix_ptr = l_matrix;
matrix_ptr [col+y*row] = val; // to assign a value
}
this is what the compiler would have done anyway.
Just take regular css button designs, and apply that CSS to a link (in exactly the same way as you would to a button).
Example:
<a href="#" class="stylish-button">Some words</a>
<style type="text/css">
.stylish-button {
-webkit-box-shadow:rgba(0,0,0,0.2) 0 1px 0 0;
-moz-box-shadow:rgba(0,0,0,0.2) 0 1px 0 0;
box-shadow:rgba(0,0,0,0.2) 0 1px 0 0;
color:#333;
background-color:#FA2;
border-radius:5px;
-moz-border-radius:5px;
-webkit-border-radius:5px;
border:none;
font-size:16px;
font-weight:700;
padding:4px 16px;
text-shadow:#FE6 0 1px 0
}
</style>
If you're trying to take advantage of polymorphic behavior, you need to ensure that the methods visible to outside classes (that need polymorphism) have the same signature. That means they need to have the same name, number and order of parameters, as well as the parameter types.
In your case, you might do better to have a generic draw()
method, and rely on the subclasses (Rectangle
, Ellipse
) to implement the draw()
method as what you had been thinking of as "drawEllipse" and "drawRectangle".
This is similar to one of the answers but in different way :
scala> val x = List(1,2,3)
x: List[Int] = List(1, 2, 3)
scala> val y = x ::: 4 :: Nil
y: List[Int] = List(1, 2, 3, 4)
If I understand you correctly, you need to use -SearchBase:
Get-ADUser -SearchBase "OU=Accounts,OU=RootOU,DC=ChildDomain,DC=RootDomain,DC=com" -Filter *
Note that Get-ADUser defaults to using
-SearchScope Subtree
so you don't need to specify it. It's this that gives you all sub-OUs (and sub-sub-OUs, etc.).
if you want to write in column:
for x in np.nditer(a.T, order='C'):
file.write(str(x))
file.write("\n")
Here 'a' is the name of numpy array and 'file' is the variable to write in a file.
If you want to write in row:
writer= csv.writer(file, delimiter=',')
for x in np.nditer(a.T, order='C'):
row.append(str(x))
writer.writerow(row)
RUN /bin/sh -c "apk add --no-cache bash"
worked for me.
Since your content-type is application/x-www-form-urlencoded
you'll need to encode the POST body, especially if it contains characters like &
which have special meaning in a form.
Try passing your string through HttpUtility.UrlEncode before writing it to the request stream.
Here are a couple links for reference.
One line solution:
map.put(key, map.containsKey(key) ? map.get(key) + 1 : 1);
In version 2.1.5
changeDate has been renamed to change.dp so changedate was not working for me
$("#datetimepicker").datetimepicker().on('change.dp', function (e) {
FillDate(new Date());
});
also needed to change css class from datepicker to datepicker-input
<div id='datetimepicker' class='datepicker-input input-group controls'>
<input id='txtStartDate' class='form-control' placeholder='Select datepicker' data-rule-required='true' data-format='MM-DD-YYYY' type='text' />
<span class='input-group-addon'>
<span class='icon-calendar' data-time-icon='icon-time' data-date-icon='icon-calendar'></span>
</span>
</div>
Date formate also works in capitals like this data-format='MM-DD-YYYY'
it might be helpful for someone it gave me really hard time :)
Note if you are using https.request
do not directly use the body from res.on('data',..
. This will fail if you have a large data coming in chunks. So you need to concatenate all the data and then process the response in res.on('end'
. Example -
var options = {
hostname: "www.google.com",
port: 443,
path: "/upload",
method: 'POST',
headers: {
'Content-Type': 'application/json',
'Content-Length': Buffer.byteLength(post_data)
}
};
//change to http for local testing
var req = https.request(options, function (res) {
res.setEncoding('utf8');
var body = '';
res.on('data', function (chunk) {
body = body + chunk;
});
res.on('end',function(){
console.log("Body :" + body);
if (res.statusCode != 200) {
callback("Api call failed with response code " + res.statusCode);
} else {
callback(null);
}
});
});
req.on('error', function (e) {
console.log("Error : " + e.message);
callback(e);
});
// write data to request body
req.write(post_data);
req.end();
This was sort of tricky for me too, I did the following which worked pretty well.
chmod
the egg to be executable: chmod a+x [egg]
(ie, for Python 2.6, chmod a+x setuptools-0.6c9-py2.6.egg
)./[egg]
(ie, for Python 2.6, ./setuptools-0.6c9-py2.6.egg
)Not sure if you'll need to use sudo if you're just installing it for you current user. You'd definitely need it to install it for all users.
For finding value use below
if let a = companies["AAPL"] {
// a is the value
}
For traversing through the dictionary
for (key, value) in companies {
print(key,"---", value)
}
Finally for searching key by value you firstly add the extension
extension Dictionary where Value: Equatable {
func findKey(forValue val: Value) -> Key? {
return first(where: { $1 == val })?.key
}
}
Then just call
companies.findKey(val : "Apple Inc")
If your static URL is correct but still:
Not found: /static/css/main.css
Perhaps your WSGI problem.
? Config WSGI serves both development env and production env
==========================project/project/wsgi.py==========================
import os
from django.conf import settings
from django.contrib.staticfiles.handlers import StaticFilesHandler
from django.core.wsgi import get_wsgi_application
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'project.settings')
if settings.DEBUG:
application = StaticFilesHandler(get_wsgi_application())
else:
application = get_wsgi_application()
It seems to work using
html, body { overflow: hidden; }
inside the IFrame
edit: Of course this is only working, if you have access to the Iframe's content (which I have in my case)
ok so my solution for this was:
this.arrayWeNeed.DoWhatWeNeedWithThisArray();
const tempArray = [...arrayWeNeed];
this.arrayWeNeed = [];
this.arrayWeNeed = tempArray;
And this trigger me ngOnChanges
%TEMP%
vc_redist.x64
see Download Visual C++ Redistributable for Visual Studio 2015keep.update((0,1,2,3,4,5,6,7,8,9,10))
Or
keep.update(np.arange(11))
You can use Git Bash to remove the folder:
example: c:\users\olefrank\projects\mynodeproject
rm -rf /c/users/olefrank/projects/mynodeproject
Is it acceptable & safe to run
pip install
undersudo
?
It's not safe and it's being frowned upon – see What are the risks of running 'sudo pip'?
To install Python package in your home directory you don't need root privileges. See description of --user
option to pip.
You can use the function int atoi (const char * str);
.
You need to include #include <stdlib.h>
and use the function in this way:int x = atoi(argv[1]);
Here more information if needed: atoi - C++ Reference
There are several possible causes:
@EnableAutoConfiguration.
If not then your spring app does not see them and hence will not create anything in dbCheck your config, it seems that you are using some hibernate specific options, try to replace them with:
spring.jpa.database-platform=org.hibernate.dialect.MySQL5InnoDBDialect
spring.jpa.hibernate.ddl-auto=update
spring.datasource.driverClassName=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/test
spring.datasource.username=test
spring.datasource.password=
Your application.properties
must be in src/main/resources
folder.
If you did not specify dialect correctly it might try to default to bundled together with boot in-memory database and (as it was with me) I could see that it tries to connect to local HSQL
(see console output) instance and fail at updating the schema.
I have been developing and designing iOS apps for a while and This is the best iOS design cheat sheet out there!
have fun :)!
Update: For iOS 8+, and the new devices (iPhone 6, 6 Plus, iPad Air) see this updated link.
Meta update: Iphone 6s/6s Plus have the same resolutions as iPhone 6/6 Plus respectively
This is an image from the new version of the article:
I had the same requirement, I used "Alex Turpin" solution with small corrections as mentioned below.
var select = document.getElementById("selectNumber");
var options = ["1", "2", "3", "4", "5"];
for(var i = 0; i < options.length; i++) {
var opt = options[i];
var el = document.createElement("option");
el.text = opt;
el.value = opt;
select.add(el);
}?
Corrections because with the appendChild() function is loads when the DOM prepares. So It's not working in old(8 or lesser) IE versions. So with the corrections it's working fine.
Thanks Alex for your solution.
Some notes on differences b/w add() and appendChild()
Try this...
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_landing_page);
.....
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar_landing_page);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayShowTitleEnabled(false);
.....
}
You have to convert the "DateTime" to a "Date". Then you can easier select just one for the given date no matter the time for that date.
Found an article titled "MYSQL WITH NOLOCK"
https://web.archive.org/web/20100814144042/http://sqldba.org/articles/22-mysql-with-nolock.aspx
in MS SQL Server you would do the following:
SELECT * FROM TABLE_NAME WITH (nolock)
and the MYSQL equivalent is
SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED ;
SELECT * FROM TABLE_NAME ;
SET SESSION TRANSACTION ISOLATION LEVEL REPEATABLE READ ;
EDIT
Michael Mior suggested the following (from the comments)
SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED ;
SELECT * FROM TABLE_NAME ;
COMMIT ;
I know this message is old and was a long time ago - but i also had problem with with the exact same error:
the problem I had was relates to the fact the encrypted text was converted to String and to byte[]
when trying to DECRYPT it.
private Key getAesKey() throws Exception {
return new SecretKeySpec(Arrays.copyOf(key.getBytes("UTF-8"), 16), "AES");
}
private Cipher getMutual() throws Exception {
Cipher cipher = Cipher.getInstance("AES");
return cipher;// cipher.doFinal(pass.getBytes());
}
public byte[] getEncryptedPass(String pass) throws Exception {
Cipher cipher = getMutual();
cipher.init(Cipher.ENCRYPT_MODE, getAesKey());
byte[] encrypted = cipher.doFinal(pass.getBytes("UTF-8"));
return encrypted;
}
public String getDecryptedPass(byte[] encrypted) throws Exception {
Cipher cipher = getMutual();
cipher.init(Cipher.DECRYPT_MODE, getAesKey());
String realPass = new String(cipher.doFinal(encrypted));
return realPass;
}
You can use following command -
LENGTH(TRIM(TRANSLATE(string1, '+-.0123456789', '')))
This will return NULL if your string1
is Numeric
your query would be -
select * from tablename
where LENGTH(TRIM(TRANSLATE(X, '+-.0123456789', ''))) is null
Use this for modern browsers:
function my_onkeydown_handler( event ) {
switch (event.keyCode) {
case 116 : // 'F5'
event.preventDefault();
event.keyCode = 0;
window.status = "F5 disabled";
break;
}
}
document.addEventListener("keydown", my_onkeydown_handler);
Your for
loop looks good.
A possible while
loop to accomplish the same thing:
int sum = 0;
int i = 1;
while (i <= 100) {
sum += i;
i++;
}
System.out.println("The sum is " + sum);
A possible do while
loop to accomplish the same thing:
int sum = 0;
int i = 1;
do {
sum += i;
i++;
} while (i <= 100);
System.out.println("The sum is " + sum);
The difference between the while
and the do while
is that, with the do while
, at least one iteration is sure to occur.