If you want to be able to have a SELECT without problems of the parent id having to be lower than child id, a function could be used. It supports also multiple children (as a tree should do) and the tree can have multiple heads. It also ensure to break if a loop exists in the data.
I wanted to use dynamic SQL to be able to pass the table/columns names, but functions in MySQL don't support this.
DELIMITER $$
CREATE FUNCTION `isSubElement`(pParentId INT, pId INT) RETURNS int(11)
DETERMINISTIC
READS SQL DATA
BEGIN
DECLARE isChild,curId,curParent,lastParent int;
SET isChild = 0;
SET curId = pId;
SET curParent = -1;
SET lastParent = -2;
WHILE lastParent <> curParent AND curParent <> 0 AND curId <> -1 AND curParent <> pId AND isChild = 0 DO
SET lastParent = curParent;
SELECT ParentId from `test` where id=curId limit 1 into curParent;
IF curParent = pParentId THEN
SET isChild = 1;
END IF;
SET curId = curParent;
END WHILE;
RETURN isChild;
END$$
Here, the table test
has to be modified to the real table name and the columns (ParentId,Id) may have to be adjusted for your real names.
Usage :
SET @wantedSubTreeId = 3;
SELECT * FROM test WHERE isSubElement(@wantedSubTreeId,id) = 1 OR ID = @wantedSubTreeId;
Result :
3 7 k
5 3 d
9 3 f
1 5 a
SQL for test creation :
CREATE TABLE IF NOT EXISTS `test` (
`Id` int(11) NOT NULL,
`ParentId` int(11) DEFAULT NULL,
`Name` varchar(300) NOT NULL,
PRIMARY KEY (`Id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
insert into test (id, parentid, name) values(3,7,'k');
insert into test (id, parentid, name) values(5,3,'d');
insert into test (id, parentid, name) values(9,3,'f');
insert into test (id, parentid, name) values(1,5,'a');
insert into test (id, parentid, name) values(6,2,'o');
insert into test (id, parentid, name) values(2,8,'c');
EDIT : Here is a fiddle to test it yourself. It forced me to change the delimiter using the predefined one, but it works.
You could use a recursive scalar function:-
set nocount on
create table location (
id int,
name varchar(50),
parent int
)
insert into location values
(1,'france',null),
(2,'paris',1),
(3,'belleville',2),
(4,'lyon',1),
(5,'vaise',4),
(6,'united kingdom',null),
(7,'england',6),
(8,'manchester',7),
(9,'fallowfield',8),
(10,'withington',8)
go
create function dbo.breadcrumb(@child int)
returns varchar(1024)
as begin
declare @returnValue varchar(1024)=''
declare @parent int
select @returnValue+=' > '+name,@parent=parent
from location
where id=@child
if @parent is not null
set @returnValue=dbo.breadcrumb(@parent)+@returnValue
return @returnValue
end
go
declare @location int=1
while @location<=10 begin
print dbo.breadcrumb(@location)+' >'
set @location+=1
end
produces:-
> france >
> france > paris >
> france > paris > belleville >
> france > lyon >
> france > lyon > vaise >
> united kingdom >
> united kingdom > england >
> united kingdom > england > manchester >
> united kingdom > england > manchester > fallowfield >
> united kingdom > england > manchester > withington >
This works for me, hope this will work for you too. It will give you a Record set Root to Child for any Specific Menu. Change the Field name as per your requirements.
SET @id:= '22';
SELECT Menu_Name, (@id:=Sub_Menu_ID ) as Sub_Menu_ID, Menu_ID
FROM
( SELECT Menu_ID, Menu_Name, Sub_Menu_ID
FROM menu
ORDER BY Sub_Menu_ID DESC
) AS aux_table
WHERE Menu_ID = @id
ORDER BY Sub_Menu_ID;
<input type="checkbox" name="check1" value="checkbox" onchange="showMe('div1')" /> checkbox
<div id="div1" style="display:none;">NOTICE</div>
<script type="text/javascript">
<!--
function showMe (box) {
var chboxs = document.getElementById("div1").style.display;
var vis = "none";
if(chboxs=="none"){
vis = "block"; }
if(chboxs=="block"){
vis = "none"; }
document.getElementById(box).style.display = vis;
}
//-->
</script>
Well you understood it partially. You have to tailor the beans according to your need and inform Spring container to manage it when required, by using a methodology populalrly known as IoC (Inversion of Control) coined by Martin Fowler, also known as Dependency Injection (DI).
You wire the beans in a way, so that you do not have to take care of the instantiating or evaluate any dependency on the bean. This is popularly known as Hollywood Principle.
Google is the best tool to explore more on this in addition to the links you would get flooded with here in this question. :)
Additionally, DataContractSerializer will serialize items marked as [Serializable] and will also serialize unmarked types in .NET 3.5 SP1 and later, to allow support for serializing anonymous types.
So, it depends on how you've decorated your class as to how to keep a member from serializing:
[DataContract]
, then remove the [DataMember]
for the property.[Serializable]
, then add [NonSerialized]
in front of the field for the property.[IgnoreDataMember]
to the property.DECLARE @v XML = (SELECT * FROM <tablename> FOR XML AUTO)
Insert the above statement at the point where you want to view the table's contents. The table's contents will be rendered as XML in the locals window, or you can add @v
to the watches window.
Following @Javier's answer. I have decided to go with "patching up the external IP" for my load balancer.
$ kubectl patch service my-loadbalancer-service-name \
-n lb-service-namespace \
-p '{"spec": {"type": "LoadBalancer", "externalIPs":["192.168.39.25"]}}'
This will replace that 'pending' with a new patched up IP address you can use for your cluster.
For more on this. Please see karthik's post on LoadBalancer support with Minikube for Kubernetes
Not the cleanest way to do it. I needed a temporary solution. Hope this helps somebody.
Continuing with what Dave Ward said:
Page/Control design
<asp:Label runat="server" ID="Label1" Style="display: none;" />
<asp:Button runat="server" ID="Button1" />
Code behind
Somewhere in the load section:
Label label1 = (Label)FindControl("Label1");
((Label)FindControl("Button1")).OnClientClick = "ToggleVisibility('" + label1.ClientID + "')";
Javascript file
function ToggleVisibility(elementID)
{
var element = document.getElementByID(elementID);
if (element.style.display = 'none')
{
element.style.display = 'inherit';
}
else
{
element.style.display = 'none';
}
}
Of course, if you don't want to toggle but just to show the button/label then adjust the javascript method accordingly.
The important point here is that you need to send the information about the ClientID
of the control that you want to manipulate on the client side to the javascript file either setting global variables or through a function parameter as in my example.
Extract each jar to it's own directory using the jar command with parameters xvf. i.e. jar xvf myjar.jar
for each jar.
Then, use the UNIX command diff
to compare the two directories. This will show the differences in the directories. You can use diff -r dir1 dir2
two recurse and show the differences in text files in each directory(.xml, .properties, etc).
This will also show if binary class files differ. To actually compare the class files you will have to decompile them as noted by others.
Via Google's webfontloader
var fontDownloadCount = 0;
WebFont.load({
custom: {
families: ['fontfamily1', 'fontfamily2']
},
fontinactive: function() {
fontDownloadCount++;
if (fontDownloadCount == 2) {
// all fonts have been loaded and now you can do what you want
}
}
});
Try the following command iptables-save
.
Call the toISOString()
method:
var dt = new Date("30 July 2010 15:05 UTC");
document.write(dt.toISOString());
// Output:
// 2010-07-30T15:05:00.000Z
That's interesting, but as far as I know the answer is a firm no. I don't see why you need a nested ID, since you'll usually cross it with another element that has the same nested ID. If you don't there's no point, if you do there's still very little point.
You should use the SendAsync
method instead, this is a generic method, that serializes the input to the service
Widget widget = new Widget()
widget.Name = "test"
widget.Price = 1;
HttpClient client = new HttpClient();
client.BaseAddress = new Uri("http://localhost:44268/api/test");
client.SendAsync(new HttpRequestMessage<Widget>(widget))
.ContinueWith((postTask) => postTask.Result.EnsureSuccessStatusCode() );
If you don't want to create the concrete class, you can make it with the FormUrlEncodedContent
class
var client = new HttpClient();
// This is the postdata
var postData = new List<KeyValuePair<string, string>>();
postData.Add(new KeyValuePair<string, string>("Name", "test"));
postData.Add(new KeyValuePair<string, string>("Price ", "100"));
HttpContent content = new FormUrlEncodedContent(postData);
client.PostAsync("http://localhost:44268/api/test", content).ContinueWith(
(postTask) =>
{
postTask.Result.EnsureSuccessStatusCode();
});
Note: you need to make your id to a nullable int (int?
)
Since the question refers to a single element, this code might be more suitable:
// Checks CSS content for display:[none|block], ignores visibility:[true|false]
$(element).is(":visible");
// The same works with hidden
$(element).is(":hidden");
It is the same as twernt's suggestion, but applied to a single element; and it matches the algorithm recommended in the jQuery FAQ.
We use jQuery's is() to check the selected element with another element, selector or any jQuery object. This method traverses along the DOM elements to find a match, which satisfies the passed parameter. It will return true if there is a match, otherwise return false.
In your second part, you should use new = original.copy()
.copy
and =
are different things.
I was getting a lot of empty text nodes with the accepted filter function. If you're only interested in selecting text nodes that contain non-whitespace, try adding a nodeValue
conditional to your filter
function, like a simple $.trim(this.nodevalue) !== ''
:
$('element')
.contents()
.filter(function(){
return this.nodeType === 3 && $.trim(this.nodeValue) !== '';
});
Or to avoid strange situations where the content looks like whitespace, but is not (e.g. the soft hyphen ­
character, newlines \n
, tabs, etc.), you can try using a Regular Expression. For example, \S
will match any non-whitespace characters:
$('element')
.contents()
.filter(function(){
return this.nodeType === 3 && /\S/.test(this.nodeValue);
});
Assuming the image is using the default entrypoint /bin/sh -c
, running /bin/bash
will exit immediately in daemon mode (-d
). If you want this container to run an interactive shell, use -it
instead of -d
. If you want to execute arbitrary commands in a container usually executing another process, you might want to try nsenter
or nsinit
. Have a look at https://blog.codecentric.de/en/2014/07/enter-docker-container/ for the details.
If it's the last item in the array, you can do obj.pop()
The shortcuts I use in Visual Studio for multiline (aka box) select are Shift + Alt + up/down/left/right
To create this in Visual Studio Code you can add these keybindings to the keybindings.json file (menu File → Preferences → Keyboard shortcuts).
{ "key": "shift+alt+down", "command": "editor.action.insertCursorBelow",
"when": "editorTextFocus" },
{ "key": "shift+alt+up", "command": "editor.action.insertCursorAbove",
"when": "editorTextFocus" },
{ "key": "shift+alt+right", "command": "cursorRightSelect",
"when": "editorTextFocus" },
{ "key": "shift+alt+left", "command": "cursorLeftSelect",
"when": "editorTextFocus" }
Here is a middle of the road approach that doesn't rely on any external libraries. I use list comprehension to exclude overlaps between abbreviations and terminators as well as to exclude overlaps between variations on terminations, for example: '.' vs. '."'
abbreviations = {'dr.': 'doctor', 'mr.': 'mister', 'bro.': 'brother', 'bro': 'brother', 'mrs.': 'mistress', 'ms.': 'miss', 'jr.': 'junior', 'sr.': 'senior',
'i.e.': 'for example', 'e.g.': 'for example', 'vs.': 'versus'}
terminators = ['.', '!', '?']
wrappers = ['"', "'", ')', ']', '}']
def find_sentences(paragraph):
end = True
sentences = []
while end > -1:
end = find_sentence_end(paragraph)
if end > -1:
sentences.append(paragraph[end:].strip())
paragraph = paragraph[:end]
sentences.append(paragraph)
sentences.reverse()
return sentences
def find_sentence_end(paragraph):
[possible_endings, contraction_locations] = [[], []]
contractions = abbreviations.keys()
sentence_terminators = terminators + [terminator + wrapper for wrapper in wrappers for terminator in terminators]
for sentence_terminator in sentence_terminators:
t_indices = list(find_all(paragraph, sentence_terminator))
possible_endings.extend(([] if not len(t_indices) else [[i, len(sentence_terminator)] for i in t_indices]))
for contraction in contractions:
c_indices = list(find_all(paragraph, contraction))
contraction_locations.extend(([] if not len(c_indices) else [i + len(contraction) for i in c_indices]))
possible_endings = [pe for pe in possible_endings if pe[0] + pe[1] not in contraction_locations]
if len(paragraph) in [pe[0] + pe[1] for pe in possible_endings]:
max_end_start = max([pe[0] for pe in possible_endings])
possible_endings = [pe for pe in possible_endings if pe[0] != max_end_start]
possible_endings = [pe[0] + pe[1] for pe in possible_endings if sum(pe) > len(paragraph) or (sum(pe) < len(paragraph) and paragraph[sum(pe)] == ' ')]
end = (-1 if not len(possible_endings) else max(possible_endings))
return end
def find_all(a_str, sub):
start = 0
while True:
start = a_str.find(sub, start)
if start == -1:
return
yield start
start += len(sub)
I used Karl's find_all function from this entry: Find all occurrences of a substring in Python
Yes, I couldn't see how to use 'default' in the migration generator command either but was able to specify a default value for a new string column as follows by amending the generated migration file before applying "rake db:migrate":
class AddColumnToWidgets < ActiveRecord::Migration
def change
add_column :widgets, :colour, :string, default: 'red'
end
end
This adds a new column called 'colour' to my 'Widget' model and sets the default 'colour' of new widgets to 'red'.
Two options
for(int i = 0, n = s.length() ; i < n ; i++) {
char c = s.charAt(i);
}
or
for(char c : s.toCharArray()) {
// process c
}
The first is probably faster, then 2nd is probably more readable.
Rather then write a lot of code, just do this:
{
dynamic tableNameAttribute = typeof(T).CustomAttributes.FirstOrDefault().ToString();
dynamic tableName = tableNameAttribute.Substring(tableNameAttribute.LastIndexOf('.'), tableNameAttribute.LastIndexOf('\\'));
}
Your code (which looks ok) doesn't return a pointer to an array. It returns a pointer to the first element of an array.
In fact that's usually what you want to do. Most manipulation of arrays are done via pointers to individual elements, not via pointers to the array as a whole.
You can define a pointer to an array, for example this:
double (*p)[42];
defines p
as a pointer to a 42-element array of double
s. A big problem with that is that you have to specify the number of elements in the array as part of the type -- and that number has to be a compile-time constant. Most programs that deal with arrays need to deal with arrays of varying sizes; a given array's size won't vary after it's been created, but its initial size isn't necessarily known at compile time, and different array objects can have different sizes.
A pointer to the first element of an array lets you use either pointer arithmetic or the indexing operator []
to traverse the elements of the array. But the pointer doesn't tell you how many elements the array has; you generally have to keep track of that yourself.
If a function needs to create an array and return a pointer to its first element, you have to manage the storage for that array yourself, in one of several ways. You can have the caller pass in a pointer to (the first element of) an array object, probably along with another argument specifying its size -- which means the caller has to know how big the array needs to be. Or the function can return a pointer to (the first element of) a static array defined inside the function -- which means the size of the array is fixed, and the same array will be clobbered by a second call to the function. Or the function can allocate the array on the heap -- which makes the caller responsible for deallocating it later.
Everything I've written so far is common to C and C++, and in fact it's much more in the style of C than C++. Section 6 of the comp.lang.c FAQ discusses the behavior of arrays and pointers in C.
But if you're writing in C++, you're probably better off using C++ idioms. For example, the C++ standard library provides a number of headers defining container classes such as <vector>
and <array>
, which will take care of most of this stuff for you. Unless you have a particular reason to use raw arrays and pointers, you're probably better off just using C++ containers instead.
EDIT : I think you edited your question as I was typing this answer. The new code at the end of your question is, as you observer, no good; it returns a pointer to an object that ceases to exist as soon as the function returns. I think I've covered the alternatives.
Don't need a regex
.
string[: string.find(' ')]
static void Main(string[] args)
{
var prop = GetPropertyInfo<MyDto>(_ => _.MyProperty);
MyDto dto = new MyDto();
dto.MyProperty = 666;
var value = prop.GetValue(dto);
// value == 666
}
class MyDto
{
public int MyProperty { get; set; }
}
public static PropertyInfo GetPropertyInfo<TSource>(Expression<Func<TSource, object>> propertyLambda)
{
Type type = typeof(TSource);
var member = propertyLambda.Body as MemberExpression;
if (member == null)
{
var unary = propertyLambda.Body as UnaryExpression;
if (unary != null)
{
member = unary.Operand as MemberExpression;
}
}
if (member == null)
{
throw new ArgumentException(string.Format("Expression '{0}' refers to a method, not a property.",
propertyLambda.ToString()));
}
var propInfo = member.Member as PropertyInfo;
if (propInfo == null)
{
throw new ArgumentException(string.Format("Expression '{0}' refers to a field, not a property.",
propertyLambda.ToString()));
}
if (type != propInfo.ReflectedType && !type.IsSubclassOf(propInfo.ReflectedType))
{
throw new ArgumentException(string.Format("Expression '{0}' refers to a property that is not from type {1}.",
propertyLambda.ToString(), type));
}
return propInfo;
}
Date.parse('01/01/2011 10:20:45') > Date.parse('01/01/2011 5:10:10')
> true
The 1st January is an arbitrary date, doesn't mean anything.
If you want the .DS_Store
files to become invisible (they still exist but can't be seen) then run the following command in the "Terminal" window:
defaults write com.apple.finder AppleShowAllFiles FALSE; killall Finder
This will set the system default to stop showing these files on your Desktop and elsewhere. It will also restart the Finder in order to make this change visible (especially on your Desktop).
SELECT DATEADD(day,-30,date) AS before30d
FROM...
But it is strongly recommended to keep date in datetime column, not varchar.
In practice, the models are used as follows.
In discriminative models, to predict the label y
from the training example x
, you must evaluate:
which merely chooses what is the most likely class y
considering x
. It's like we were trying to model the decision boundary between the classes. This behavior is very clear in neural networks, where the computed weights can be seen as a complexly shaped curve isolating the elements of a class in the space.
Now, using Bayes' rule, let's replace the in the equation by . Since you are just interested in the arg max, you can wipe out the denominator, that will be the same for every y
. So, you are left with
which is the equation you use in generative models.
While in the first case you had the conditional probability distribution p(y|x)
, which modeled the boundary between classes, in the second you had the joint probability distribution p(x, y)
, since p(x | y) p(y) = p(x, y)
, which explicitly models the actual distribution of each class.
With the joint probability distribution function, given a y
, you can calculate ("generate") its respective x
. For this reason, they are called "generative" models.
You need to set the "default value" for the date field to getdate()
. Any records inserted into the table will automatically have the insertion date as their value for this field.
The location of the "default value" property is dependent on the version of SQL Server Express you are running, but it should be visible if you select the date field of your table when editing the table.
Hope this helps;
df1 = data.frame(CustomerId=c(1:10),
Hobby = c(rep("sing", 4), rep("pingpong", 3), rep("hiking", 3)),
Product=c(rep("Toaster",3),rep("Phone", 2), rep("Radio",3), rep("Stereo", 2)))
df2 = data.frame(CustomerId=c(2,4,6, 8, 10),State=c(rep("Alabama",2),rep("Ohio",1), rep("Cal", 2)),
like=c("sing", 'hiking', "pingpong", 'hiking', "sing"))
df3 = merge(df1, df2, by.x=c("CustomerId", "Hobby"), by.y=c("CustomerId", "like"))
Assuming df1$Hobby
and df2$like
mean the same thing.
Use the in
keyword.
if 'apples' in d:
if d['apples'] == 20:
print('20 apples')
else:
print('Not 20 apples')
If you want to get the value only if the key exists (and avoid an exception trying to get it if it doesn't), then you can use the get
function from a dictionary, passing an optional default value as the second argument (if you don't pass it it returns None
instead):
if d.get('apples', 0) == 20:
print('20 apples.')
else:
print('Not 20 apples.')
Try to use:
location.reload(true);
When this method receives a true
value as argument, it will cause the page to always be reloaded from the server. If it is false or not specified, the browser may reload the page from its cache.
More info:
Use hard links instead. This differs from a soft (symbolic) link. All programs, including git
will treat the file as a regular file. Note that the contents can be modified by changing either the source or the destination.
If you already have git and Xcode installed, install hardlink. It's a microscopic tool to create hard links.
To create the hard link, simply:
hln source destination
Does Apple File System support directory hard links?
Directory hard links are not supported by Apple File System. All directory hard links are converted to symbolic links or aliases when you convert from HFS+ to APFS volume formats on macOS.
Follow https://github.com/selkhateeb/hardlink/issues/31 for future alternatives.
The ln
command can make hard links:
ln source destination
Use mklink to create a junction on Windows:
mklink /j "source" "destination"
for a lapply-friendly version..
library(data.table)
library(xlsx)
path2txtlist <- your.list.of.txt.files
wb <- createWorkbook()
lapply(seq_along(path2txtlist), function (j) {
sheet <- createSheet(wb, paste("sheetname", j))
addDataFrame(fread(path2txtlist[j]), sheet=sheet, startColumn=1, row.names=FALSE)
})
saveWorkbook(wb, "My_File.xlsx")
For me, it worked when I selected the correct bit of my Python version, NOT the one of my computer version.
Mine is 32bit, and my computer is 64bit. That was the problem and the 32bit version of fixed it.
To be exact, here is the one that I downloaded and worked for me:
mysqlclient-1.3.13-cp37-cp37m-win32.whl
Once again, just make sure to chose your python version of bits and not your system one.
Since we know that i
is an int
, you can just go ahead and unsigneding it!
This would do the trick:
int i = -62;
unsigned int j = unsigned(i);
Instead of wading through the description of all the options, you can jump to 3.4.3 Short Options Cross Reference
under the info tar
command.
x
means --extract
. v
means --verbose
. f
means --file
. z
means --gzip
. You can combine one-letter arguments together, and f
takes an argument, the filename. There is something you have to watch out for:
Short options' letters may be clumped together, but you are not required to do this (as compared to old options; see below). When short options are clumped as a set, use one (single) dash for them all, e.g., ''tar' -cvf'. Only the last option in such a set is allowed to have an argument(1).
This old way of writing 'tar' options can surprise even experienced users. For example, the two commands:tar cfz archive.tar.gz file tar -cfz archive.tar.gz file
are quite different. The first example uses 'archive.tar.gz' as the value for option 'f' and recognizes the option 'z'. The second example, however, uses 'z' as the value for option 'f' -- probably not what was intended.
i basically suggest equal gap on right and left, and setting width to auto. Here like:
.bmi { /*my additional class name -for card*/
margin-left: 18%;
margin-right: 18%;
width: auto;
}
You can use line-height
for that. Just set it up to the exact height of your p
tag.
p.event_desc {
line-height:35px;
}
FYI as of Oracle 12c, you can do this:
CREATE OR REPLACE PROCEDURE testproc(n number)
AS
cur SYS_REFCURSOR;
BEGIN
OPEN cur FOR SELECT object_id,object_name from all_objects where rownum < n;
DBMS_SQL.RETURN_RESULT(cur);
END;
/
EXEC testproc(3);
OBJECT_ID OBJECT_NAME
---------- ------------
100 ORA$BASE
116 DUAL
This was supposed to get closer to other databases, and ease migrations. But it's not perfect to me, for instance SQL developer won't display it nicely as a normal SELECT.
I prefer the output of pipeline functions, but they need more boilerplate to code.
more info: https://oracle-base.com/articles/12c/implicit-statement-results-12cr1
I found jszip quite useful. I've used so far only for reading, but they have create/edit capabilities as well.
Code wise it looks something like this
var new_zip = new JSZip();
new_zip.load(file);
new_zip.files["doc.xml"].asText() // this give you the text in the file
One thing I noticed is that it seems the file has to be in binary stream format (read using the .readAsArrayBuffer of FileReader(), otherwise I was getting errors saying I might have a corrupt zip file
Edit: Note from the 2.x to 3.0.0 upgrade guide:
The load() method and the constructor with data (new JSZip(data)) have been replaced by loadAsync().
Thanks user2677034
You can get just the edition name by using the following steps.
You could use Matcher#start(group)
and Matcher#end(group)
to build a generic replacement method:
public static String replaceGroup(String regex, String source, int groupToReplace, String replacement) {
return replaceGroup(regex, source, groupToReplace, 1, replacement);
}
public static String replaceGroup(String regex, String source, int groupToReplace, int groupOccurrence, String replacement) {
Matcher m = Pattern.compile(regex).matcher(source);
for (int i = 0; i < groupOccurrence; i++)
if (!m.find()) return source; // pattern not met, may also throw an exception here
return new StringBuilder(source).replace(m.start(groupToReplace), m.end(groupToReplace), replacement).toString();
}
public static void main(String[] args) {
// replace with "%" what was matched by group 1
// input: aaa123ccc
// output: %123ccc
System.out.println(replaceGroup("([a-z]+)([0-9]+)([a-z]+)", "aaa123ccc", 1, "%"));
// replace with "!!!" what was matched the 4th time by the group 2
// input: a1b2c3d4e5
// output: a1b2c3d!!!e5
System.out.println(replaceGroup("([a-z])(\\d)", "a1b2c3d4e5", 2, 4, "!!!"));
}
Check online demo here.
Error 0x80040154 is COM's REGDB_E_CLASSNOTREG, which means "Class not registered". Basically, a COM class is not declared in the installation registry.
If you get this error when trying to register a DLL, it may be possible that the registration code for this DLL is trying to instantiate another COM server (DLL or EXE) which is missing or not registered on this installation.
If you don't have access to the original DLL source, I would suggest to use SysInternal's Process Monitor tool to track COM registry lookups (there use to be a more simple RegMon tool but it may not work any more).
You should put a filter on the working process (here: Regsvr32.exe) to only capture what's interesting. Then you should look for queries on HKEY_CLASSES_ROOT\[a progid, a string] that fail (with the NAME_NOT_FOUND error for example), or queries on HKEY_CLASSES_ROOT\CLSID\[a guid] that fail.
PS: Unfortunately, there may be many thing that seem to fail on a perfectly working Windows system, so you'll have to study all errors carefully. Good luck :-)
I would think so. Why not? Wouldn't be much of a CDN w/o offering the CSS to support the script files
This link suggests that they are:
We find it particularly exciting that the jQuery UI CSS themes are now hosted on Google's Ajax Libraries CDN.
Go to Task Manager --> Processes and manually stop the W3SVC process. After doing this the process should start normally when restarting IIS
For NodeJS I would get the file name from the res.url
, write the header for the file by getting the extension of the file with path.extname
, create a read stream for the file, and pipe the response.
const http = require('http');
const fs = require('fs');
const path = require('path');
const port = process.env.PORT || 3000;
const server = http.createServer((req, res) => {
let filePath = path.join(
__dirname,
"public",
req.url === "/" ? "index.html" : req.url
);
let extName = path.extname(filePath);
let contentType = 'text/html';
switch (extName) {
case '.css':
contentType = 'text/css';
break;
case '.js':
contentType = 'text/javascript';
break;
case '.json':
contentType = 'application/json';
break;
case '.png':
contentType = 'image/png';
break;
case '.jpg':
contentType = 'image/jpg';
break;
}
console.log(`File path: ${filePath}`);
console.log(`Content-Type: ${contentType}`)
res.writeHead(200, {'Content-Type': contentType});
const readStream = fs.createReadStream(filePath);
readStream.pipe(res);
});
server.listen(port, (err) => {
if (err) {
console.log(`Error: ${err}`)
} else {
console.log(`Server listening at port ${port}...`);
}
});
You can disable or enable the general query log (which logs all queries) with
SET GLOBAL general_log = 1 # (or 0 to disable)
Options -> Text Editor -> All Languages -> Line Number checkbox
There are three ways to do it,
a) using a service
b) Exploiting depending parent/child relation between controller scopes.
c) In Angular 2.0 "As" keyword will be pass the data from one controller to another.
For more information with example, Please check the below link:
Here is a function I wrote. It's not very efficient, but it is simple and you can add or remove any punctuation that you desire:
def stripPunc(wordList):
"""Strips punctuation from list of words"""
puncList = [".",";",":","!","?","/","\\",",","#","@","$","&",")","(","\""]
for punc in puncList:
for word in wordList:
wordList=[word.replace(punc,'') for word in wordList]
return wordList
For those who are getting this error in DBeaver the solution was found here at line:
@lcustodio on the SSL page, set SSL mode: require and either leave the SSL Factory blank or use the org.postgresql.ssl.NonValidatingFactory
Under Network -> SSL tab I checked the Use SLL checkbox and set Advance -> SSL Mode = require and it now works.
If you just want to remove single character and If you know index of a character you want to remove, you can use following function:
/**
* Remove single character at particular index from string
* @param {*} index index of character you want to remove
* @param {*} str string from which character should be removed
*/
function removeCharAtIndex(index, str) {
var maxIndex=index==0?0:index;
return str.substring(0, maxIndex) + str.substring(index, str.length)
}
<!--
//THIS PROGRAM WILL UPLOAD IMAGE AND WILL RETRIVE FROM DATABASE. UNSING BLOB
(IF YOU HAVE ANY QUERY CONTACT:[email protected])
CREATE TABLE `images` (
`id` int(100) NOT NULL AUTO_INCREMENT,
`name` varchar(100) NOT NULL,
`image` longblob NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB ;
-->
<!-- this form is user to store images-->
<form action="index.php" method="post" enctype="multipart/form-data">
Enter the Image Name:<input type="text" name="image_name" id="" /><br />
<input name="image" id="image" accept="image/JPEG" type="file"><br /><br />
<input type="submit" value="submit" name="submit" />
</form>
<br /><br />
<!-- this form is user to display all the images-->
<form action="index.php" method="post" enctype="multipart/form-data">
Retrive all the images:
<input type="submit" value="submit" name="retrive" />
</form>
<?php
//THIS IS INDEX.PHP PAGE
//connect to database.db name is images
mysql_connect("", "", "") OR DIE (mysql_error());
mysql_select_db ("") OR DIE ("Unable to select db".mysql_error());
//to retrive send the page to another page
if(isset($_POST['retrive']))
{
header("location:search.php");
}
//to upload
if(isset($_POST['submit']))
{
if(isset($_FILES['image'])) {
$name=$_POST['image_name'];
$email=$_POST['mail'];
$fp=addslashes(file_get_contents($_FILES['image']['tmp_name'])); //will store the image to fp
}
// our sql query
$sql = "INSERT INTO images VALUES('null', '{$name}','{$fp}');";
mysql_query($sql) or die("Error in Query insert: " . mysql_error());
}
?>
<?php
//SEARCH.PHP PAGE
//connect to database.db name = images
mysql_connect("localhost", "root", "") OR DIE (mysql_error());
mysql_select_db ("image") OR DIE ("Unable to select db".mysql_error());
//display all the image present in the database
$msg="";
$sql="select * from images";
if(mysql_query($sql))
{
$res=mysql_query($sql);
while($row=mysql_fetch_array($res))
{
$id=$row['id'];
$name=$row['name'];
$image=$row['image'];
$msg.= '<a href="search.php?id='.$id.'"><img src="data:image/jpeg;base64,'.base64_encode($row['image']). ' " /> </a>';
}
}
else
$msg.="Query failed";
?>
<div>
<?php
echo $msg;
?>
Hope not to be late. It is accomplished using only one line!
-webkit-transition: all 0.2s ease-in-out, width 0, height 0, top 0, left 0;
-moz-transition: all 0.2s ease-in-out, width 0, height 0, top 0, left 0;
-o-transition: all 0.2s ease-in-out, width 0, height 0, top 0, left 0;
transition: all 0.2s ease-in-out, width 0, height 0, top 0, left 0;
That works on Chrome. You have to separate the CSS properties with a comma.
Here is a working example: http://jsfiddle.net/H2jet/
Without a bit of information about what files are in your repository (pure source code, images, executables, ...), it's a bit hard to answer the question :)
Beside this, I'll consider that you're willing to default to LF as line endings in your working directory because you're willing to make sure that text files have LF line endings in your .git repository wether you work on Windows or Linux. Indeed better safe than sorry....
However, there's a better alternative: Benefit from LF line endings in your Linux workdir, CRLF line endings in your Windows workdir AND LF line endings in your repository.
As you're partially working on Linux and Windows, make sure core.eol
is set to native
and core.autocrlf
is set to true
.
Then, replace the content of your .gitattributes
file with the following
* text=auto
This will let Git handle the automagic line endings conversion for you, on commits and checkouts. Binary files won't be altered, files detected as being text files will see the line endings converted on the fly.
However, as you know the content of your repository, you may give Git a hand and help him detect text files from binary files.
Provided you work on a C based image processing project, replace the content of your .gitattributes
file with the following
* text=auto
*.txt text
*.c text
*.h text
*.jpg binary
This will make sure files which extension is c, h, or txt will be stored with LF line endings in your repo and will have native line endings in the working directory. Jpeg files won't be touched. All of the others will be benefit from the same automagic filtering as seen above.
In order to get a get a deeper understanding of the inner details of all this, I'd suggest you to dive into this very good post "Mind the end of your line" from Tim Clem, a Githubber.
As a real world example, you can also peek at this commit where those changes to a .gitattributes
file are demonstrated.
UPDATE to the answer considering the following comment
I actually don't want CRLF in my Windows directories, because my Linux environment is actually a VirtualBox sharing the Windows directory
Makes sense. Thanks for the clarification. In this specific context, the .gitattributes
file by itself won't be enough.
Run the following commands against your repository
$ git config core.eol lf
$ git config core.autocrlf input
As your repository is shared between your Linux and Windows environment, this will update the local config file for both environment. core.eol
will make sure text files bear LF line endings on checkouts. core.autocrlf
will ensure potential CRLF in text files (resulting from a copy/paste operation for instance) will be converted to LF in your repository.
Optionally, you can help Git distinguish what is a text file by creating a .gitattributes
file containing something similar to the following:
# Autodetect text files
* text=auto
# ...Unless the name matches the following
# overriding patterns
# Definitively text files
*.txt text
*.c text
*.h text
# Ensure those won't be messed up with
*.jpg binary
*.data binary
If you decided to create a .gitattributes
file, commit it.
Lastly, ensure git status
mentions "nothing to commit (working directory clean)", then perform the following operation
$ git checkout-index --force --all
This will recreate your files in your working directory, taking into account your config changes and the .gitattributes
file and replacing any potential overlooked CRLF in your text files.
Once this is done, every text file in your working directory WILL bear LF line endings and git status
should still consider the workdir as clean.
1) Normally, you would want to return a Task
. The main exception should be when you need to have a void
return type (for events). If there's no reason to disallow having the caller await
your task, why disallow it?
2) async
methods that return void
are special in another aspect: they represent top-level async operations, and have additional rules that come into play when your task returns an exception. The easiest way is to show the difference is with an example:
static async void f()
{
await h();
}
static async Task g()
{
await h();
}
static async Task h()
{
throw new NotImplementedException();
}
private void button1_Click(object sender, EventArgs e)
{
f();
}
private void button2_Click(object sender, EventArgs e)
{
g();
}
private void button3_Click(object sender, EventArgs e)
{
GC.Collect();
}
f
's exception is always "observed". An exception that leaves a top-level asynchronous method is simply treated like any other unhandled exception. g
's exception is never observed. When the garbage collector comes to clean up the task, it sees that the task resulted in an exception, and nobody handled the exception. When that happens, the TaskScheduler.UnobservedTaskException
handler runs. You should never let this happen. To use your example,
public static async void AsyncMethod2(int num)
{
await Task.Factory.StartNew(() => Thread.Sleep(num));
}
Yes, use async
and await
here, they make sure your method still works correctly if an exception is thrown.
for more information see: http://msdn.microsoft.com/en-us/magazine/jj991977.aspx
public abstract class Draw {
public abstract void drawShape(); // this is abstraction. Implementation detail need not to be known.
// so we are providing only necessary detail by giving drawShape(); No implementation. Subclass will give detail.
private int type; // this variable cannot be set outside of the class. Because it is private.
// Binding private instance variable with public setter/getter method is encapsulation
public int getType() {
return type;
}
public void setType(int type) { // this is encapsulation. Protecting any value to be set.
if (type >= 0 && type <= 3) {
this.type = type;
} else {
System.out.println("We have four types only. Enter value between 0 to 4");
try {
throw new MyInvalidValueSetException();
} catch (MyInvalidValueSetException e) {
e.printStackTrace();
}
}
}
}
Abstraction
is related with methods where implementation detail is not known which is a kind of implementation hiding.
Encapsulation
is related with instance variable binding with method, a kind of data hiding.
Use ByteArrayInputStream
:
InputStream is = new ByteArrayInputStream(decodedBytes);
What has happened here is that Xcode has mysteriously added a "Framework Search Paths" entry that points to a particular iPhone device SDK. For example, mine was recently set to:
$(DEVELOPER_DIR)/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS2.2.1.sdk/System/Library/Frameworks
This leads the compiler to find frameworks of the incorrect architecture. Removing any values under the "Framework Search Paths" key in your target's build settings will resolve the issue.
I think you should make a subquery to do grouping. In this case inner subquery returns few rows and you don't need a CASE statement. So I think this is going to be faster:
select Detail.ReceiptDate AS 'DATE',
SUM(TotalMailed),
SUM(TotalReturnMail),
SUM(TraceReturnedMail)
from
(
select SentDate AS 'ReceiptDate',
count('TotalMailed') AS TotalMailed,
0 as TotalReturnMail,
0 as TraceReturnedMail
from MailDataExtract
where sentdate is not null
GROUP BY SentDate
UNION ALL
select MDE.ReturnMailDate AS 'ReceiptDate',
0 AS TotalMailed,
count(TotalReturnMail) as TotalReturnMail,
0 as TraceReturnedMail
from MailDataExtract MDE
where MDE.ReturnMailDate is not null
GROUP BY MDE.ReturnMailDate
UNION ALL
select MDE.ReturnMailDate AS 'ReceiptDate',
0 AS TotalMailed,
0 as TotalReturnMail,
count(TraceReturnedMail) as TraceReturnedMail
from MailDataExtract MDE
inner join DTSharedData.dbo.ScanData SD
ON SD.ScanDataID = MDE.ReturnScanDataID
where MDE.ReturnMailDate is not null AND SD.ReturnMailTypeID = 1
GROUP BY MDE.ReturnMailDate
) as Detail
GROUP BY Detail.ReceiptDate
ORDER BY 1
One simple query will do it:
SELECT *
FROM table
GROUP BY email
HAVING COUNT(*) = 1;
In my Case, in El Capitan (OSX 10.11), I have to do following in ~/.bash_profile
export DYLD_LIBRARY_PATH="/usr/local/mysql/lib:${DYLD_LIBRARY_PATH}"
export PATH="/usr/local/mysql/lib:${PATH}"
I had the problem occur on my system in a very strange way. In my system customers create products that sit inside a directory structure of product categories. So ProductA might sit in the folder CategoryInner inside the folder CategoryOuter. I had just added a feature where my URL would show the category nesting on the URL thusly:
http://www.somedomain.com/product/CategoryOuter/CategoryInner/ProductA.aspx
Obviously the nesting on the URL was just for SEO purposes (and to show the user what category their product was sitting in. But when I used ResolveClientUrl on some URLs that used to work, it must've been confused by the extra fake pathing. The error message was popping up in the debugger on some line that was never the problem so it took me quite some time to figure out what was going on. I wnet through and removed all of my ResolveClientUrl calls that acted on anything that didn't start with a ~ and made the rest of the paths absolute paths.
you can do it by two simple point and change in your code
1.In your xml in anim folder of your project, Set the fade in and fade out duration time not equal
2.In you java class before the start of fade out animation, set second imageView visibility Gone then after fade out animation started set second imageView visibility which you want to fade in visible
fadeout.xml
<alpha
android:duration="4000"
android:fromAlpha="1.0"
android:interpolator="@android:anim/accelerate_interpolator"
android:toAlpha="0.0" />
fadein.xml
<alpha
android:duration="6000"
android:fromAlpha="0.0"
android:interpolator="@android:anim/accelerate_interpolator"
android:toAlpha="1.0" />
In you java class
Animation animFadeOut = AnimationUtils.loadAnimation(this, R.anim.fade_out);
ImageView iv = (ImageView) findViewById(R.id.imageView1);
ImageView iv2 = (ImageView) findViewById(R.id.imageView2);
iv.setVisibility(View.VISIBLE);
iv2.setVisibility(View.GONE);
animFadeOut.reset();
iv.clearAnimation();
iv.startAnimation(animFadeOut);
Animation animFadeIn = AnimationUtils.loadAnimation(this, R.anim.fade_in);
iv2.setVisibility(View.VISIBLE);
animFadeIn.reset();
iv2.clearAnimation();
iv2.startAnimation(animFadeIn);
If you want to detach existing object follow @Slauma's advice. If you want to load objects without tracking changes use:
var data = context.MyEntities.AsNoTracking().Where(...).ToList();
As mentioned in comment this will not completely detach entities. They are still attached and lazy loading works but entities are not tracked. This should be used for example if you want to load entity only to read data and you don't plan to modify them.
No, you can't call one constructor from another in C++03 (called a delegating constructor).
This changed in C++11 (aka C++0x), which added support for the following syntax:
(example taken from Wikipedia)
class SomeType
{
int number;
public:
SomeType(int newNumber) : number(newNumber) {}
SomeType() : SomeType(42) {}
};
I used this code:
public class MainActivity extends Activity
{
.
.
.
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
.
.
.
}
@Override
protected void onResume()
{
super.onResume();
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION);
registerReceiver(broadcastReceiver, intentFilter);
}
@Override
protected void onPause()
{
super.onPause();
unregisterReceiver(broadcastReceiver);
}
private final BroadcastReceiver broadcastReceiver = new BroadcastReceiver()
{
@Override
public void onReceive(Context context, Intent intent)
{
final String action = intent.getAction();
if (action.equals(WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION))
{
if (intent.getBooleanExtra(WifiManager.EXTRA_SUPPLICANT_CONNECTED, false))
{
// wifi is enabled
}
else
{
// wifi is disabled
}
}
}
};
}
I have explained it in the following post that has the same question.
Actually, it is possible to provide the service (or guard, since that also needs to be provided) when creating the service.
The command is the following...
ng g s services/backendApi --module=app.module
Edit
It is possible to provide to a feature module, as well, you must give it the path to the module you would like.
ng g s services/backendApi --module=services/services.module
This works for me with validation of bootstrap
$(document).ready(function() {
$("#fname").keypress(function(e) {
var regex = new RegExp("^[a-zA-Z ]+$");
var str = String.fromCharCode(!e.charCode ? e.which : e.charCode);
if (regex.test(str)) {
return true;
}
This is the error line:
if (called_from.equalsIgnoreCase("add")) { --->38th error line
This means that called_from
is null. Simple check if it is null above:
String called_from = getIntent().getStringExtra("called");
if(called_from == null) {
called_from = "empty string";
}
if (called_from.equalsIgnoreCase("add")) {
// do whatever
} else {
// do whatever
}
That way, if called_from
is null, it'll execute the else
part of your if statement.
I realize this is a rather old question, but here's the solution I came up with today:
doSomethingToRequestData().then(function(downloadedFile) {
// create a download anchor tag
var downloadLink = document.createElement('a');
downloadLink.target = '_blank';
downloadLink.download = 'name_to_give_saved_file.pdf';
// convert downloaded data to a Blob
var blob = new Blob([downloadedFile.data], { type: 'application/pdf' });
// create an object URL from the Blob
var URL = window.URL || window.webkitURL;
var downloadUrl = URL.createObjectURL(blob);
// set object URL as the anchor's href
downloadLink.href = downloadUrl;
// append the anchor to document body
document.body.append(downloadLink);
// fire a click event on the anchor
downloadLink.click();
// cleanup: remove element and revoke object URL
document.body.removeChild(downloadLink);
URL.revokeObjectURL(downloadUrl);
}
Check Following : 1) Package names 2) Import Statements (import every required packages) 3) Proper set of braces ,i.e { } 4) Check Syntax too.. i.e semicolons,commas,etc.
function timerCtrl ($scope,$interval) {
$scope.seconds = 0;
var timer = $interval(function(){
$scope.seconds++;
$scope.$apply();
console.log($scope.countDown);
}, 1000);
}
why not simply eg
var newList = list1.Union(list2)/*.Distinct()*//*.ToList()*/;
oh ... according to the documentation you can leave out the .Distinct()
This method excludes duplicates from the return set
Have you considered simply using System.Drawing namespace? For example:
System.Drawing.Color color = System.Drawing.Color.FromArgb(red, green, blue);
float hue = color.GetHue();
float saturation = color.GetSaturation();
float lightness = color.GetBrightness();
Note that it's not exactly what you've asked for (see differences between HSL and HSV and the Color class does not have a conversion back from HSL/HSV but the latter is reasonably easy to add.
When dealing with regular Python lists, random.shuffle()
will do the job just as the previous answers show.
But when it come to ndarray
(numpy.array
), random.shuffle
seems to break the original ndarray
. Here is an example:
import random
import numpy as np
import numpy.random
a = np.array([1,2,3,4,5,6])
a.shape = (3,2)
print a
random.shuffle(a) # a will definitely be destroyed
print a
Just use: np.random.shuffle(a)
Like random.shuffle
, np.random.shuffle
shuffles the array in-place.
Not to reorganize imports (not to unfold .* and not to reorder lines) to have least VCS changeset
you can use custom eclipse clenup as this answer suggests
Not much documentation on PowerShell loops.
Documentation on loops in PowerShell is plentiful, and you might want to check out the following help topics: about_For
, about_ForEach
, about_Do
, about_While
.
foreach($line in Get-Content .\file.txt) {
if($line -match $regex){
# Work here
}
}
Another idiomatic PowerShell solution to your problem is to pipe the lines of the text file to the ForEach-Object
cmdlet:
Get-Content .\file.txt | ForEach-Object {
if($_ -match $regex){
# Work here
}
}
Instead of regex matching inside the loop, you could pipe the lines through Where-Object
to filter just those you're interested in:
Get-Content .\file.txt | Where-Object {$_ -match $regex} | ForEach-Object {
# Work here
}
use this
<div id="date">23/05/2013</div>
<script type="text/javascript">
$(document).ready(function(){
var x = $("#date").text();
x.text(x.substring(0, 2) + '<br />'+x.substring(3));
});
</script>
For read-only controls they are the same. For 2 way databinding, using a datasource in which you want to update, insert, etc with declarative databinding, you'll need to use Bind
.
Imagine for example a GridView with a ItemTemplate
and EditItemTemplate
. If you use Bind
or Eval
in the ItemTemplate
, there will be no difference. If you use Eval
in the EditItemTemplate
, the value will not be able to be passed to the Update
method of the DataSource
that the grid is bound to.
UPDATE: I've come up with this example:
<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Data binding demo</title>
</head>
<body>
<form id="form1" runat="server">
<asp:GridView
ID="grdTest"
runat="server"
AutoGenerateEditButton="true"
AutoGenerateColumns="false"
DataSourceID="mySource">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<%# Eval("Name") %>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox
ID="edtName"
runat="server"
Text='<%# Bind("Name") %>'
/>
</EditItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
</form>
<asp:ObjectDataSource
ID="mySource"
runat="server"
SelectMethod="Select"
UpdateMethod="Update"
TypeName="MyCompany.CustomDataSource" />
</body>
</html>
And here's the definition of a custom class that serves as object data source:
public class CustomDataSource
{
public class Model
{
public string Name { get; set; }
}
public IEnumerable<Model> Select()
{
return new[]
{
new Model { Name = "some value" }
};
}
public void Update(string Name)
{
// This method will be called if you used Bind for the TextBox
// and you will be able to get the new name and update the
// data source accordingly
}
public void Update()
{
// This method will be called if you used Eval for the TextBox
// and you will not be able to get the new name that the user
// entered
}
}
I ran into an article that illustrates a method where the data from the same excel sheet can be imported in the selected table until there is no modifications in excel with data types.
If the data is inserted or overwritten with new ones, importing process will be successfully accomplished, and the data will be added to the table in SQL database.
The article may be found here: http://www.sqlshack.com/using-ssis-packages-import-ms-excel-data-database/
Hope it helps.
type: dot -Tps filename.dot -o outfile.ps
If you want to use the dot renderer. There are alternatives like neato and twopi. If graphiz isn't in your path, figure out where it is installed and run it from there.
You can change the output format by varying the value after -T
and choosing an appropriate filename extension after -o
.
If you're using windows, check out the installed tool called GVEdit, it makes the whole process slightly easier.
Go look at the graphviz site in the section called "User's Guides" for more detail on how to use the tools:
http://www.graphviz.org/documentation/
(See page 27 for output formatting for the dot command, for instance)
For string:
+ (BOOL) checkStringIsNotEmpty:(NSString*)string {
if (string == nil || string.length == 0) return NO;
return YES;}
#!/usr/bin/python3
is a shebang line.
A shebang line defines where the interpreter is located. In this case, the python3
interpreter is located in /usr/bin/python3
. A shebang line could also be a bash
, ruby
, perl
or any other scripting languages' interpreter, for example: #!/bin/bash
.
Without the shebang line, the operating system does not know it's a python script, even if you set the execution flag (chmod +x script.py
) on the script and run it like ./script.py
. To make the script run by default in python3, either invoke it as python3 script.py
or set the shebang line.
You can use #!/usr/bin/env python3
for portability across different systems in case they have the language interpreter installed in different locations.
If you are not averse to boost, boost.tokenizer is flexible enough to solve this
#include <string>
#include <iostream>
#include <boost/tokenizer.hpp>
void split_and_show(const std::string s)
{
boost::char_separator<char> sep(" ", "", boost::keep_empty_tokens);
boost::tokenizer<boost::char_separator<char> > tok(s, sep);
for(auto i = tok.begin(); i!=tok.end(); ++i)
std::cout << '"' << *i << "\"\n";
}
int main()
{
split_and_show("This is a string");
split_and_show("This is a string");
}
test: https://ideone.com/mN2sR
body
parameter within the mailto
string%0D%0A
as newlineThe mailto
URI Scheme is specified by by RFC2368 (July 1998) and RFC6068 (October 2010).
Below is an extract of section 5 of this last RFC:
[...] line breaks in the body of a message MUST be encoded with
"%0D%0A"
.
Implementations MAY add a final line break to the body of a message even if there is no trailing"%0D%0A"
in the body [...]
See also in section 6 the example from the same RFC:
<mailto:[email protected]?body=send%20current-issue%0D%0Asend%20index>
The above mailto
body corresponds to:
send current-issue
send index
If you are using com.google.android.gms:play-services-maps:16.0.0 or below and your app is targeting API level 28 (Android 9.0) or above, you must include the following declaration within the element of AndroidManifest.xml.
<uses-library
android:name="org.apache.http.legacy"
android:required="false" />
This is handled for you if you are using com.google.android.gms:play-services-maps:16.1.0 and is not necessary if your app is targeting a lower API level.
First, Single
throws an exception if there is more than one element satisfying the criteria. Second, your criteria should only check if the Correct
property is true
. Right now, you are checking if a
is equal to a.Correct
(which will not even compile).
You should use First
(which will throw if there are no such elements), or FirstOrDefault
(which will return null
for a reference type if there isn't such element):
// this will return the first correct answer,
// or throw an exception if there are no correct answers
var correct = answers.First(a => a.Correct);
// this will return the first correct answer,
// or null if there are no correct answers
var correct = answers.FirstOrDefault(a => a.Correct);
// this will return a list containing all answers which are correct,
// or an empty list if there are no correct answers
var allCorrect = answers.Where(a => a.Correct).ToList();
A Java String
is an Object
. (String
extends Object
.)
So you can get an Object
reference via assignment/initialisation:
String a = "abc";
Object b = a;
If you can hard-code the number of players
Player[] thePlayers = {
new Player(0),
new Player(1),
new Player(2),
new Player(3)
};
Try this
products.sort(function (a, b) {
return a.title.rendered - b.title.rendered;
});
OR
You can import lodash/underscore library, it has many build functions available for manipulating, filtering, sorting the array and all.
Using underscore: (below one is just an example)
import * as _ from 'underscore';
let sortedArray = _.sortBy(array, 'title');
If you want to trim and print one dimensional Array or the deepest dimension of multi-dimensional Array you should use:
foreach($array as $key => $value)
{
$array[$key] = trim($value);
print("-");
print($array[$key]);
print("-");
print("<br>");
}
If you want to trim but do not want to print one dimensional Array or the deepest dimension of multi-dimensional Array you should use:
$array = array_map('trim', $array);
Being more generic, passing values from calling element (which is easier to maintain).
function showHideEle(selectSrc, targetEleId, triggerValue) { _x000D_
if(selectSrc.value==triggerValue) {_x000D_
document.getElementById(targetEleId).style.display = "inline-block";_x000D_
} else {_x000D_
document.getElementById(targetEleId).style.display = "none";_x000D_
}_x000D_
}
_x000D_
<select id="Title"_x000D_
onchange="showHideEle(this, 'TitleOther', 'Other')">_x000D_
<option value="">-- Choose</option>_x000D_
<option value="Mr">Mr</option>_x000D_
<option value="Mrs">Mrs</option>_x000D_
<option value="Miss">Miss</option>_x000D_
<option value="Other">Other --></option> _x000D_
</select>_x000D_
<input id="TitleOther" type="text" title="Title other" placeholder="Other title" _x000D_
style="display:none;"/>
_x000D_
Here how you can print without using Data::Dumper
print "@{[%hash]}";
Even when all references are fine the prefix problem causes compile errors.
What about creating a find and replace sub for all 'built-in VBA functions' in all modules, like this:
e.g. "= Date" will be replaced with "= VBA.Date".
e.g. " Date(" will be replaced with " VBA.Date(" .
(excluding "dim t As Date" or "mydate")
All vba functions for find and replace are written here :
Assuming you are on Windows (this bug is caused by the crappy bat files escaping), It is a bug introduced in the latest versions (7.0.56
and 8.0.14
) to workaround another bug. Try to remove the "
around the JAVA_OPTS
declaration in catalina.bat
. It fixed it for me with Tomcat 7.0.56
yesterday.
In 7.0.56
in bin/catalina.bat:179
and 184
:noJuliConfig
set "JAVA_OPTS=%JAVA_OPTS% %LOGGING_CONFIG%"
..
:noJuliManager
set "JAVA_OPTS=%JAVA_OPTS% %LOGGING_MANAGER%"
to
:noJuliConfig
set JAVA_OPTS=%JAVA_OPTS% %LOGGING_CONFIG%
..
:noJuliManager
set JAVA_OPTS=%JAVA_OPTS% %LOGGING_MANAGER%
For your asterisk, it might only be a configuration of yours somewhere that appends it to the host declaration.
I saw this on Tomcat's bugtracker yesterday but I can't find the link again. Edit Found it! https://issues.apache.org/bugzilla/show_bug.cgi?id=56895
I hope it fixes your problem.
For a specific and limited number of widgets, wrapping them in a widget IgnorePointer does exactly this: when its ignoring
property is set to true, the sub-widget (actually, the entire subtree) is not clickable.
IgnorePointer(
ignoring: true, // or false
child: RaisedButton(
onPressed: _logInWithFacebook,
child: Text("Facebook sign-in"),
),
),
Otherwise, if you intend to disable an entire subtree, look into AbsorbPointer().
The XPath spec. defines the string value of an element as the concatenation (in document order) of all of its text-node descendents.
This explains the "strange results".
"Better" results can be obtained using the expressions below:
//*[text() = 'qwerty']
The above selects every element in the document that has at least one text-node child with value 'qwerty'.
//*[text() = 'qwerty' and not(text()[2])]
The above selects every element in the document that has only one text-node child and its value is: 'qwerty'.
You can also use this
$scope.persons = $filter('filter')($scope.persons , { id: ('!' + person.id) });
Use the replace
function in js:
var emailAdd = $(this).text().replace(/ /g,'');
That will remove all the spaces
If you want to remove the leading and trailing whitespace only, use the jQuery $.trim method :
var emailAdd = $.trim($(this).text());
you can use show
instead of shown
for making the function to load just before modal open, instead of after modal open.
$('#code').on('show.bs.modal', function (e) {
// do something...
})
There is advanced version of ping - "fping", which gives possibility to define the timeout in milliseconds.
#!/bin/bash
IP='192.168.1.1'
fping -c1 -t300 $IP 2>/dev/null 1>/dev/null
if [ "$?" = 0 ]
then
echo "Host found"
else
echo "Host not found"
fi
Arrow functions => best ES6 feature so far. They are a tremendously powerful addition to ES6, that I use constantly.
Wait, you can't use arrow function everywhere in your code, its not going to work in all cases like this
where arrow functions are not usable. Without a doubt, the arrow function is a great addition it brings code simplicity.
But you can’t use an arrow function when a dynamic context is required: defining methods, create objects with constructors, get the target from this when handling events.
They do not have this
It uses “lexical scoping” to figure out what the value of “this
”
should be. In simple word lexical scoping it uses “this
” from the
inside the function’s body.
They do not have arguments
Arrow functions don’t have an arguments
object. But the same
functionality can be achieved using rest parameters.
let sum = (...args) => args.reduce((x, y) => x + y, 0)
sum(3, 3, 1) // output - 7
`
They cannot be used with new
Arrow functions can't be construtors because they do not have a prototype property.
map
, reduce
, or forEach
.columnDefinition will override the sql DDL generated by hibernate for this particular column, it is non portable and depends on what database you are using. You can use it to specify nullable, length, precision, scale... ect.
No, you can only get to the interior color of a cell by using a Macro. I am afraid. It's really easy to do (cell.interior.color) so unless you have a requirement that restricts you from using VBA, I say go for it.
In my case in cpanel i have 'Register mail ids' option where i add my email address and after 30 minutes it works fine with simple php mail function.
From RFC 3986:
A URI can be further classified as a locator, a name, or both. The term "Uniform Resource Locator" (URL) refers to the subset of URIs that, in addition to identifying a resource, provide a means of locating the resource by describing its primary access mechanism (e.g., its network "location"). The term "Uniform Resource Name" (URN) has been used historically to refer to both URIs under the "urn" scheme [RFC2141], which are required to remain globally unique and persistent even when the resource ceases to exist or becomes unavailable, and to any other URI with the properties of a name.
So all URLs are URIs, and all URNs are URIs - but URNs and URLs are different, so you can't say that all URIs are URLs.
If you haven't already read Roger Pate's answer, I'd advise doing so as well.
I had an issue at work. The oracle server was "patched" and one of the databases I use could not be connect via the TNSNames entry but via Basic connection. The Database was up and admin could see it was up and running.
Addionally any application that used TNS for connecting to the database would not work either.
The problem found was that the database name was not correct in the TNS file but for some reason it's been working for years. Correcting the name fixed it for us. I did find that Oracle SQL Developer kept using the old TNS entry even after I updated it and I don't feel like reinstalling it for just one DB Connection. It appears that when the database was created it was given a smaller name then the others and via some cut and paste action within the TNSNames file it got mixed up. No one is sure how its worked as we're investigating it but the oracle patch ensured that the name had to be correct
An example of the name was it was down as "DBName.Part1.Part2" but in fact the DB name was "DBName"
I got the same cryptic error message from Rails 4.1, Ruby 2.3.3 in a recent project, stacktrace originating in layout application.html.haml
After a wild goose chase, the culprit was a UTF-8 character which recently had been added to the footer of all pages. For some weird reason the error would only show up intermittently.
Replacing the UTF-8 character with the corresponding HTML escape sequence &#xHHHH;
solved the issue.
I hope this saves other people some time in the future..
On OS X nothing helps poor builtin sed to become adequate. The solution is:
brew install gnu-sed
And then use gsed instead of sed, which will just work as expected.
A couple of things:
(?:
not (:?
If you address the first problem, you won't need groups at all.
*That is, a blank or beginning/end of string.
Here is a rough explanation of the concepts.
[ACK]
is the acknowledgement that the previously sent data packet was received.
[FIN]
is sent by a host when it wants to terminate the connection; the TCP protocol requires both endpoints to send the termination request (i.e. FIN
).
So, suppose
[FIN,ACK]
indicating that it received the sent packet and wants to close the session.[FIN,ACK]
indicating that it received the termination request (the ACK
part) and that it too will close the connection (the FIN
part).However, if host A wants to close the session after sending the packet, it would only send a [FIN]
packet (nothing to acknowledge) but host B would respond with [FIN,ACK]
(acknowledges the request and responds with FIN
).
Finally, some TCP stacks perform half-duplex termination, meaning that they can send [RST]
instead of the usual [FIN,ACK]
. This happens when the host actively closes the session without processing all the data that was sent to it. Linux is one operating system which does just this.
You can find a more detailed and comprehensive explanation here.
mysql -u username -ppassword dbname < /path/file-name.sql
example
mysql -u root -proot product < /home/myPC/Downloads/tbl_product.sql
Use this from terminal
In such case you will need to parse zip local header entries. Each file, stored in zip file, has preceding Local File Header entry, which (normally) contains enough information for decompression, Generally, you can make simple parsing of such entries in stream, select needed file, copy header + compressed file data to other file, and call unzip on that part (if you don't want to deal with the whole Zip decompression code or library).
Either !=
or ne
will work, but you need to get the accessor syntax and nested quotes sorted out.
<c:if test="${content.contentType.name ne 'MCE'}">
<%-- snip --%>
</c:if>
you can set tintColor of UIBarItem :
UITabBarItem.appearance().setTitleTextAttributes([NSForegroundColorAttributeName: UIColor.magentaColor()], forState:.Normal)
UITabBarItem.appearance().setTitleTextAttributes([NSForegroundColorAttributeName: UIColor.redColor()], forState:.Selected)
I just tested your snippet, and their is no double spacing line here. The end-of-line are \r\n
, so what i would check in your case is:
(Note that even by putting a value with \n, DictWriter automaticly quote the value.)
You can transpose the single-row dataframe (which still results in a dataframe) and then squeeze the results into a series (the inverse of to_frame
).
df = pd.DataFrame([list(range(5))], columns=["a{}".format(i) for i in range(5)])
>>> df.T.squeeze() # Or more simply, df.squeeze() for a single row dataframe.
a0 0
a1 1
a2 2
a3 3
a4 4
Name: 0, dtype: int64
Note: To accommodate the point raised by @IanS (even though it is not in the OP's question), test for the dataframe's size. I am assuming that df
is a dataframe, but the edge cases are an empty dataframe, a dataframe of shape (1, 1), and a dataframe with more than one row in which case the use should implement their desired functionality.
if df.empty:
# Empty dataframe, so convert to empty Series.
result = pd.Series()
elif df.shape == (1, 1)
# DataFrame with one value, so convert to series with appropriate index.
result = pd.Series(df.iat[0, 0], index=df.columns)
elif len(df) == 1:
# Convert to series per OP's question.
result = df.T.squeeze()
else:
# Dataframe with multiple rows. Implement desired behavior.
pass
This can also be simplified along the lines of the answer provided by @themachinist.
if len(df) > 1:
# Dataframe with multiple rows. Implement desired behavior.
pass
else:
result = pd.Series() if df.empty else df.iloc[0, :]
If you want to use Swift file into Objective-C class, so from Xcode 8 onwards you can follow below steps:
If you have created the project in Objective-C:
Compile it and if it will generate linker error like: compiled with newer version of Swift language (3.0) than previous files (2.0) for architecture x86_64 or armv 7
Make one more change in your
Build and Run.
SELECT DATE_FORMAT(COLUMN_NAME, "%d/%m/%Y %h:%i %p");
OR
SELECT DATE_FORMAT("2019-05-10 19:30:10", "%d/%m/%Y %h:%i %p");
OUTPUT is 10/05/2019 07:30 PM
Well, it's not a direct answer to your question, but there's a tool in GNU/Linux whose job is to rotate log files on regular basis, keeping old ones zipped up to a certain limit. It's logrotate
if((boolean1 && !boolean2) || (boolean2 && !boolean1))
{
//do it
}
IMHO this code could be simplified:
if(boolean1 != boolean2)
{
//do it
}
Schema says what tables are in database, what columns they have and how they are related. Each database has its own schema.
I fixed it by add a property to renderSeparator Component,the code is here:
_renderSeparator(sectionID,rowID){
return (
<View style={styles.separatorLine} key={"sectionID_"+sectionID+"_rowID_"+rowID}></View>
);
}
The key words of this warning is "unique", sectionID + rowID return a unique value in ListView.
One way would be to create all commits ever made to patches. checkout the initial commit and then apply the patches in order after reading.
use git format-patch <initial revision>
and then git checkout <initial revision>
.
you should get a pile of files in your director starting with four digits which are the patches.
when you are done reading your revision just do git apply <filename>
which should look like
git apply 0001-*
and count.
But I really wonder why you wouldn't just want to read the patches itself instead? Please post this in your comments because I'm curious.
the git manual also gives me this:
git show next~10:Documentation/README
Shows the contents of the file Documentation/README as they were current in the 10th last commit of the branch next.
you could also have a look at git blame filename
which gives you a listing where each line is associated with a commit hash + author.
You can safeguard yourself either of these two ways:
function myFunc(thing) {
if (thing && thing.foo && thing.foo.bar) {
// safe to use thing.foo.bar here
}
}
function myFunc(thing) {
try {
var x = thing.foo.bar;
// do something with x
} catch(e) {
// do whatever you want when thing.foo.bar didn't work
}
}
In the first example, you explicitly check all the possible elements of the variable you're referencing to make sure it's safe before using it so you don't get any unplanned reference exceptions.
In the second example, you just put an exception handler around it. You just access thing.foo.bar
assuming it exists. If it does exist, then the code runs normally. If it doesn't exist, then it will throw an exception which you will catch and ignore. The end result is the same. If thing.foo.bar
exists, your code using it executes. If it doesn't exist that code does not execute. In all cases, the function runs normally.
The if
statement is faster to execute. The exception can be simpler to code and use in complex cases where there may be many possible things to protect against and your code is structured so that throwing an exception and handling it is a clean way to skip execution when some piece of data does not exist. Exceptions are a bit slower when the exception is thrown.
After JAVAEE8 published , now you can use the new JAVAEE API JSON-B (JSR367)
Maven dependency :
<dependency>
<groupId>javax.json.bind</groupId>
<artifactId>javax.json.bind-api</artifactId>
<version>1.0</version>
</dependency>
<dependency>
<groupId>org.eclipse</groupId>
<artifactId>yasson</artifactId>
<version>1.0</version>
</dependency>
<dependency>
<groupId>org.glassfish</groupId>
<artifactId>javax.json</artifactId>
<version>1.1</version>
</dependency>
Here is some code snapshot :
Jsonb jsonb = JsonbBuilder.create();
// Two important API : toJson fromJson
String result = jsonb.toJson(listaDePontos);
JSON-P is also updated to 1.1 and more easy to use. JSON-P 1.1 (JSR374)
Maven dependency :
<dependency>
<groupId>javax.json</groupId>
<artifactId>javax.json-api</artifactId>
<version>1.1</version>
</dependency>
<dependency>
<groupId>org.glassfish</groupId>
<artifactId>javax.json</artifactId>
<version>1.1</version>
</dependency>
Here is the runnable code snapshot :
String data = "{\"name\":\"Json\","
+ "\"age\": 29,"
+ " \"phoneNumber\": [10000,12000],"
+ "\"address\": \"test\"}";
JsonObject original = Json.createReader(new StringReader(data)).readObject();
/**getValue*/
JsonPointer pAge = Json.createPointer("/age");
JsonValue v = pAge.getValue(original);
System.out.println("age is " + v.toString());
JsonPointer pPhone = Json.createPointer("/phoneNumber/1");
System.out.println("phoneNumber 2 is " + pPhone.getValue(original).toString());
C always wins for speed:
#include <stdio.h>
#include <stdlib.h>
int main(int argc, char **argv) {
ssize_t read;
char *line = NULL;
size_t len = 0;
double sum = 0.0;
while (read = getline(&line, &len, stdin) != -1) {
sum += atof(line);
}
printf("%f", sum);
return 0;
}
Timing for 1M numbers (same machine/input as my python answer):
$ gcc sum.c -o sum && time ./sum < numbers
5003371677.000000
real 0m0.188s
user 0m0.180s
sys 0m0.000s
the correct way to use in TypeScript is
handleChange(e: React.ChangeEvent<HTMLInputElement>) {
// No longer need to cast to any - hooray for react!
this.setState({temperature: e.target.value});
}
render() {
...
<input value={temperature} onChange={this.handleChange} />
...
);
}
Follow the complete class, it's better to understand:
import * as React from "react";
const scaleNames = {
c: 'Celsius',
f: 'Fahrenheit'
};
interface TemperatureState {
temperature: string;
}
interface TemperatureProps {
scale: string;
}
class TemperatureInput extends React.Component<TemperatureProps, TemperatureState> {
constructor(props: TemperatureProps) {
super(props);
this.handleChange = this.handleChange.bind(this);
this.state = {temperature: ''};
}
// handleChange(e: { target: { value: string; }; }) {
// this.setState({temperature: e.target.value});
// }
handleChange(e: React.ChangeEvent<HTMLInputElement>) {
// No longer need to cast to any - hooray for react!
this.setState({temperature: e.target.value});
}
render() {
const temperature = this.state.temperature;
const scale = this.props.scale;
return (
<fieldset>
<legend>Enter temperature in {scaleNames[scale]}:</legend>
<input value={temperature} onChange={this.handleChange} />
</fieldset>
);
}
}
export default TemperatureInput;
Here is another alternative. It will of course give you a bad result if the input char is not ascii. I've not perf tested it but I think it would be pretty fast:
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private static int GetAsciiVal(string s, int index) {
return GetAsciiVal(s[index]);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private static int GetAsciiVal(char c) {
return unchecked(c & 0xFF);
}
I did some test:
When it's running:
$ /usr/lib/zookeeper/bin/zkServer.sh status
JMX enabled by default
Using config: /usr/lib/zookeeper/bin/../conf/zoo.cfg
Mode: follower
When it's stopped:
$ zkServer status
JMX enabled by default
Using config: /usr/local/etc/zookeeper/zoo.cfg
Error contacting service. It is probably not running.
I'm not running on the same machine, but you get the idea.
How about this?
var http = require('http'),
fs = require('fs'),
options;
options = {
host: 'www.google.com' ,
port: 80,
path: '/images/logos/ps_logo2.png'
}
var request = http.get(options, function(res){
//var imagedata = ''
//res.setEncoding('binary')
var chunks = [];
res.on('data', function(chunk){
//imagedata += chunk
chunks.push(chunk)
})
res.on('end', function(){
//fs.writeFile('logo.png', imagedata, 'binary', function(err){
var buffer = Buffer.concat(chunks)
fs.writeFile('logo.png', buffer, function(err){
if (err) throw err
console.log('File saved.')
})
})
If you are using .NET 3.5 you might try with Expression trees. It is safer than reflection:
class CustomAttribute : Attribute { }
class Program
{
[Custom]
public int Id { get; set; }
static void Main()
{
Expression<Func<Program, int>> expression = p => p.Id;
var memberExpression = (MemberExpression)expression.Body;
bool hasCustomAttribute = memberExpression
.Member
.GetCustomAttributes(typeof(CustomAttribute), false).Length > 0;
}
}
select t1.id, t1.SomeNumt, SUM(t2.SomeNumt) as sum
from @t t1
inner join @t t2 on t1.id >= t2.id
group by t1.id, t1.SomeNumt
order by t1.id
Output
| ID | SOMENUMT | SUM |
-----------------------
| 1 | 10 | 10 |
| 2 | 12 | 22 |
| 3 | 3 | 25 |
| 4 | 15 | 40 |
| 5 | 23 | 63 |
Edit: this is a generalized solution that will work across most db platforms. When there is a better solution available for your specific platform (e.g., gareth's), use it!
After skimming all the answers, this also works:
if [[ -z $SOME_VAR ]]; then read -p "Enter a value for SOME_VAR: " SOME_VAR; fi
echo "SOME_VAR=$SOME_VAR"
if you don't put SOME_VAR
instead of what I have $SOME_VAR
, it will set it to an empty value; $
is necessary for this to work.
(This is my third answer because I misunderstood what your code was doing in my original, and then made a small but crucial mistake in my second—hopefully three's a charm.
Edits: Since this seems to be a popular answer, I've made a few modifications to improve its implementation over the years—most not too major. This is so if folks use it as template, it will provide an even better basis.
As others have pointed out, your MemoryError
problem is most likely because you're attempting to read the entire contents of huge files into memory and then, on top of that, effectively doubling the amount of memory needed by creating a list of lists of the string values from each line.
Python's memory limits are determined by how much physical ram and virtual memory disk space your computer and operating system have available. Even if you don't use it all up and your program "works", using it may be impractical because it takes too long.
Anyway, the most obvious way to avoid that is to process each file a single line at a time, which means you have to do the processing incrementally.
To accomplish this, a list of running totals for each of the fields is kept. When that is finished, the average value of each field can be calculated by dividing the corresponding total value by the count of total lines read. Once that is done, these averages can be printed out and some written to one of the output files. I've also made a conscious effort to use very descriptive variable names to try to make it understandable.
try:
from itertools import izip_longest
except ImportError: # Python 3
from itertools import zip_longest as izip_longest
GROUP_SIZE = 4
input_file_names = ["A1_B1_100000.txt", "A2_B2_100000.txt", "A1_B2_100000.txt",
"A2_B1_100000.txt"]
file_write = open("average_generations.txt", 'w')
mutation_average = open("mutation_average", 'w') # left in, but nothing written
for file_name in input_file_names:
with open(file_name, 'r') as input_file:
print('processing file: {}'.format(file_name))
totals = []
for count, fields in enumerate((line.split('\t') for line in input_file), 1):
totals = [sum(values) for values in
izip_longest(totals, map(float, fields), fillvalue=0)]
averages = [total/count for total in totals]
for print_counter, average in enumerate(averages):
print(' {:9.4f}'.format(average))
if print_counter % GROUP_SIZE == 0:
file_write.write(str(average)+'\n')
file_write.write('\n')
file_write.close()
mutation_average.close()
library(RCurl)
library(XML)
# Download page using RCurl
# You may need to set proxy details, etc., in the call to getURL
theurl <- "http://en.wikipedia.org/wiki/Brazil_national_football_team"
webpage <- getURL(theurl)
# Process escape characters
webpage <- readLines(tc <- textConnection(webpage)); close(tc)
# Parse the html tree, ignoring errors on the page
pagetree <- htmlTreeParse(webpage, error=function(...){})
# Navigate your way through the tree. It may be possible to do this more efficiently using getNodeSet
body <- pagetree$children$html$children$body
divbodyContent <- body$children$div$children[[1]]$children$div$children[[4]]
tables <- divbodyContent$children[names(divbodyContent)=="table"]
#In this case, the required table is the only one with class "wikitable sortable"
tableclasses <- sapply(tables, function(x) x$attributes["class"])
thetable <- tables[which(tableclasses=="wikitable sortable")]$table
#Get columns headers
headers <- thetable$children[[1]]$children
columnnames <- unname(sapply(headers, function(x) x$children$text$value))
# Get rows from table
content <- c()
for(i in 2:length(thetable$children))
{
tablerow <- thetable$children[[i]]$children
opponent <- tablerow[[1]]$children[[2]]$children$text$value
others <- unname(sapply(tablerow[-1], function(x) x$children$text$value))
content <- rbind(content, c(opponent, others))
}
# Convert to data frame
colnames(content) <- columnnames
as.data.frame(content)
Edited to add:
Sample output
Opponent Played Won Drawn Lost Goals for Goals against % Won
1 Argentina 94 36 24 34 148 150 38.3%
2 Paraguay 72 44 17 11 160 61 61.1%
3 Uruguay 72 33 19 20 127 93 45.8%
...
In cordova 3.3.1-0.1.2 the expected behavior is not working right.
in
http://cordova.apache.org/docs/en/3.3.0/config_ref_images.md.html#Icons%20and%20Splash%20Screens
it clearly states you're suppose to put them into your main www folder in a folder called res and icons that follow a particular naming convention instead of the original customizable config.xml specified way (in which you point to a file of your choosing, which was/is much better). it should take then from there for each platform and put them into the platforms/?android?/res/drawable-?dpi/icon.png but it does no such correct behavior at this time... bug.
so I guess we have to manually put them there for each platform. it would of course need to remove that from duplicating it into the www folder again. for me I had to totally replace the contents in the main www folder anyway because it simply didn't work with even hello world without hacking a redirect index.html to find some weird random folder there. Putting the res folder beside www makes the most sense but what ever it seems to be for me caused by this series of cascading and confusing design choices/flaws.
To run test cases in IE Browser make sure you have downloaded IE driver and you need to set the property as well.
Below code will help you
// This will set the driver
System.setProperty("webdriver.ie.driver","driver path\\IEDriverServer.exe");
// Initialise browser
WebDriver driver=new InternetExplorerDriver();
You can check IE Browser challenges with Selenium and complete code for more details
create an xml Drawable resource file
under res->drawable
and name it, for example, checkbox_custom_01.xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:state_checked="true"
android:drawable="@drawable/checkbox_custom_01_checked_white_green_32" />
<item
android:state_checked="false"
android:drawable="@drawable/checkbox_custom_01_unchecked_gray_32" />
</selector>
Upload your custom checkbox image files (i recommend png) to your res->drawable
folder.
Then go in your layout file and change your checkbox to
<CheckBox
android:id="@+id/checkBox1"
android:button="@drawable/checkbox_custom_01"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:focusable="false"
android:focusableInTouchMode="false"
android:text="CheckBox"
android:textSize="32dip"/>
you may customize anything, as long as android:button
points to the correct XML file you created before.
NOTE TO NEWBIES: though it is not mandatory, it is nevertheless good practice to name your checkbox with a unique id throughout your whole layout tree.
Another short way you could use is a pipe (%<>%
) from the magrittr package. It converts the character column mycolumn to a factor.
library(magrittr)
mydf$mycolumn %<>% factor
Soln 1)
mysql> select group_concat('truncate',' ',table_name,';') from information_schema.tables where table_schema="db_name" into outfile '/tmp/a.txt';
mysql> /tmp/a.txt;
Soln 2)
- Export only structure of a db
- drop the database
- import the .sql of structure
-- edit ----
earlier in solution 1, i had mentioned concat() instead of group_concat() which would have not returned the desired result
The operation you defined is a "merge" and you cannot do that with cp
. However, if you are not looking for merging and ok to lose the folder bar
then you can simply rm -rf bar
to delete the folder and then mv foo bar
to rename it. This will not take any time as both operations are done by file pointers, not file contents.
A processor in a computer running Windows has two different modes: user mode and kernel mode. The processor switches between the two modes depending on what type of code is running on the processor. Applications run in user mode, and core operating system components run in kernel mode. While many drivers run in kernel mode, some drivers may run in user mode.
When you start a user-mode application, Windows creates a process for the application. The process provides the application with a private virtual address space and a private handle table. Because an application's virtual address space is private, one application cannot alter data that belongs to another application. Each application runs in isolation, and if an application crashes, the crash is limited to that one application. Other applications and the operating system are not affected by the crash.
In addition to being private, the virtual address space of a user-mode application is limited. A processor running in user mode cannot access virtual addresses that are reserved for the operating system. Limiting the virtual address space of a user-mode application prevents the application from altering, and possibly damaging, critical operating system data.
All code that runs in kernel mode shares a single virtual address space. This means that a kernel-mode driver is not isolated from other drivers and the operating system itself. If a kernel-mode driver accidentally writes to the wrong virtual address, data that belongs to the operating system or another driver could be compromised. If a kernel-mode driver crashes, the entire operating system crashes.
If you are a Windows user once go through this link you will get more.
Thanks to "Darin Dimitrov", This is the extension methods.
public static partial class Ext
{
public static Uri GetUriWithparameters(this Uri uri,Dictionary<string,string> queryParams = null,int port = -1)
{
var builder = new UriBuilder(uri);
builder.Port = port;
if(null != queryParams && 0 < queryParams.Count)
{
var query = HttpUtility.ParseQueryString(builder.Query);
foreach(var item in queryParams)
{
query[item.Key] = item.Value;
}
builder.Query = query.ToString();
}
return builder.Uri;
}
public static string GetUriWithparameters(string uri,Dictionary<string,string> queryParams = null,int port = -1)
{
var builder = new UriBuilder(uri);
builder.Port = port;
if(null != queryParams && 0 < queryParams.Count)
{
var query = HttpUtility.ParseQueryString(builder.Query);
foreach(var item in queryParams)
{
query[item.Key] = item.Value;
}
builder.Query = query.ToString();
}
return builder.Uri.ToString();
}
}
Assuming input[row][col],
rows = len(input)
cols = map(len, input) #list of column lengths
Since you already have <Tags>
component calling a function on its parent, you do not need additional state: simply pass the filter to the <Tags>
component as a prop, and use this in rendering your buttons. Like so:
Change your render function inside your <Tags>
component to:
render: function() {
return <div className = "tags">
<button className = {this._checkActiveBtn('')} onClick = {this.setFilter.bind(this, '')}>All</button>
<button className = {this._checkActiveBtn('male')} onClick = {this.setFilter.bind(this, 'male')}>male</button>
<button className = {this._checkActiveBtn('female')} onClick = {this.setFilter.bind(this, 'female')}>female</button>
<button className = {this._checkActiveBtn('blonde')} onClick = {this.setFilter.bind(this, 'blonde')}>blonde</button>
</div>
},
And add a function inside <Tags>
:
_checkActiveBtn: function(filterName) {
return (filterName == this.props.activeFilter) ? "btn active" : "btn";
}
And inside your <List>
component, pass the filter state to the <tags>
component as a prop:
return <div>
<h2>Kids Finder</h2>
<Tags filter = {this.state.filter} onChangeFilter = {this.changeFilter} />
{list}
</div>
Then it should work as intended. Codepen here (hope the link works)
Adding strings concatenates them:
> "1" + "1"
"11"
You have to parse them into numbers first:
/* parseFloat is used here.
* Because of it's not known that
* whether the number has fractional places.
*/
var a = parseFloat($('#a').val()),
b = parseFloat($('#b').val());
Also, you have to get the values from inside of the click handler:
$("submit").on("click", function() {
var a = parseInt($('#a').val(), 10),
b = parseInt($('#b').val(), 10);
});
Otherwise, you're using the values of the textboxes from when the page loads.
You can use IPython.display.clear_output
to clear the output of a cell.
from IPython.display import clear_output
for i in range(10):
clear_output(wait=True)
print("Hello World!")
At the end of this loop you will only see one Hello World!
.
Without a code example it's not easy to give you working code. Probably buffering the latest n events is a good strategy. Whenever the buffer changes you can clear the cell's output and print the buffer again.
On MAC Mojave, if you have installed it using brew, then do
brew info <your postgres>
It will show you all environment variables that you should set, simply copy-paste those commands, restart your shell and thats it!
It depends on what you want to test exactly.
To find "whether the table exists" (no matter who's asking), querying the information schema (information_schema.tables
) is incorrect, strictly speaking, because (per documentation):
Only those tables and views are shown that the current user has access to (by way of being the owner or having some privilege).
The query provided by @kong can return FALSE
, but the table can still exist. It answers the question:
How to check whether a table (or view) exists, and the current user has access to it?
SELECT EXISTS (
SELECT FROM information_schema.tables
WHERE table_schema = 'schema_name'
AND table_name = 'table_name'
);
The information schema is mainly useful to stay portable across major versions and across different RDBMS. But the implementation is slow, because Postgres has to use sophisticated views to comply to the standard (information_schema.tables
is a rather simple example). And some information (like OIDs) gets lost in translation from the system catalogs - which actually carry all information.
Your question was:
How to check whether a table exists?
SELECT EXISTS (
SELECT FROM pg_catalog.pg_class c
JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
WHERE n.nspname = 'schema_name'
AND c.relname = 'table_name'
AND c.relkind = 'r' -- only tables
);
Use the system catalogs pg_class
and pg_namespace
directly, which is also considerably faster. However, per documentation on pg_class
:
The catalog
pg_class
catalogs tables and most everything else that has columns or is otherwise similar to a table. This includes indexes (but see alsopg_index
), sequences, views, materialized views, composite types, and TOAST tables;
For this particular question you can also use the system view pg_tables
. A bit simpler and more portable across major Postgres versions (which is hardly of concern for this basic query):
SELECT EXISTS (
SELECT FROM pg_tables
WHERE schemaname = 'schema_name'
AND tablename = 'table_name'
);
Identifiers have to be unique among all objects mentioned above. If you want to ask:
How to check whether a name for a table or similar object in a given schema is taken?
SELECT EXISTS (
SELECT FROM pg_catalog.pg_class c
JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
WHERE n.nspname = 'schema_name'
AND c.relname = 'table_name'
);
regclass
SELECT 'schema_name.table_name'::regclass
This raises an exception if the (optionally schema-qualified) table (or other object occupying that name) does not exist.
If you do not schema-qualify the table name, a cast to regclass
defaults to the search_path
and returns the OID for the first table found - or an exception if the table is in none of the listed schemas. Note that the system schemas pg_catalog
and pg_temp
(the schema for temporary objects of the current session) are automatically part of the search_path
.
You can use that and catch a possible exception in a function. Example:
A query like above avoids possible exceptions and is therefore slightly faster.
to_regclass(rel_name)
in Postgres 9.4+Much simpler now:
SELECT to_regclass('schema_name.table_name');
Same as the cast, but it returns ...
... null rather than throwing an error if the name is not found
You can use the following nginx configuration example:
upstream adminhost {
server adminhostname:8080;
}
server {
listen 80;
location ~ ^/admin/(.*)$ {
proxy_pass http://adminhost/$1$is_args$args;
proxy_redirect off;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Host $server_name;
}
}
Use curly brackets and put all the attributes you want to add inside
Example:
$('#objId').attr({
target: 'nw',
title: 'Opens in a new window'
});
A bit late to the show, but what's wrong with using encodeURIComponent() and decodeURIComponent()?
I loved Powtac's answer, but I wanted to use it in angular.js, so I created a filter using his code.
.filter('HHMMSS', ['$filter', function ($filter) {
return function (input, decimals) {
var sec_num = parseInt(input, 10),
decimal = parseFloat(input) - sec_num,
hours = Math.floor(sec_num / 3600),
minutes = Math.floor((sec_num - (hours * 3600)) / 60),
seconds = sec_num - (hours * 3600) - (minutes * 60);
if (hours < 10) {hours = "0"+hours;}
if (minutes < 10) {minutes = "0"+minutes;}
if (seconds < 10) {seconds = "0"+seconds;}
var time = hours+':'+minutes+':'+seconds;
if (decimals > 0) {
time += '.' + $filter('number')(decimal, decimals).substr(2);
}
return time;
};
}])
It's functionally identical, except that I added in an optional decimals field to display fractional seconds. Use it like you would any other filter:
{{ elapsedTime | HHMMSS }}
displays: 01:23:45
{{ elapsedTime | HHMMSS : 3 }}
displays: 01:23:45.678
I have an use case I don't believe any of your examples cover.
boxes = [b1, b2, b3]
items = [i1, i2, i3, i4, i5]
for j in range(len(boxes)):
boxes[j].putitemin(items[j])
I'm relatively new to python though so happy to learn a more elegant approach.
try to insert your img
inside your h4
DEMO
<h4 class='liketext'><img style='height: 24px; width: 24px; margin-right: 4px;' src='design/like.png'/>$likes</h4>
<h4 class='liketext'> <img style='height: 24px; width: 24px; margin-right: 4px;' src='design/dislike.png'/>$dislikes</h4>?
The usual method I have seen is X.Y.Z, which generally corresponds to major.minor.patch:
Other variations use build numbers as an additional identifier. So you may have a large number for X.Y.Z.build if you have many revisions that are tested between releases. I use a couple of packages that are identified by year/month or year/release. Thus, a release in the month of September of 2010 might be 2010.9 or 2010.3 for the 3rd release of this year.
There are many variants to versioning. It all boils down to personal preference.
For the "1.3v1.1", that may be two different internal products, something that would be a shared library / codebase that is rev'd differently from the main product; that may indicate version 1.3 for the main product, and version 1.1 of the internal library / package.
You can do something like this
import numpy as np
def cartesian_coord(*arrays):
grid = np.meshgrid(*arrays)
coord_list = [entry.ravel() for entry in grid]
points = np.vstack(coord_list).T
return points
a = np.arange(4) # fake data
print(cartesian_coord(*6*[a])
which gives
array([[0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 1],
[0, 0, 0, 0, 0, 2],
...,
[3, 3, 3, 3, 3, 1],
[3, 3, 3, 3, 3, 2],
[3, 3, 3, 3, 3, 3]])
Try this
SELECT *
FROM people P
where P.IDNo in (SELECT DISTINCT IDNo
FROM people)
My approach is very close to Garret Wilson's (thanks, I voted you up ;)
In addition it provides downward compatibility with Android < 3.
I just recognized that my solution is even closer to the one by Kevin Remo. It's just a wee bit cleaner (as it does not rely on the "expection" antipattern).
public class MyPreferenceActivity extends PreferenceActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB) {
onCreatePreferenceActivity();
} else {
onCreatePreferenceFragment();
}
}
/**
* Wraps legacy {@link #onCreate(Bundle)} code for Android < 3 (i.e. API lvl
* < 11).
*/
@SuppressWarnings("deprecation")
private void onCreatePreferenceActivity() {
addPreferencesFromResource(R.xml.preferences);
}
/**
* Wraps {@link #onCreate(Bundle)} code for Android >= 3 (i.e. API lvl >=
* 11).
*/
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
private void onCreatePreferenceFragment() {
getFragmentManager().beginTransaction()
.replace(android.R.id.content, new MyPreferenceFragment ())
.commit();
}
}
For a "real" (but more complex) example see NusicPreferencesActivity and NusicPreferencesFragment.
The poster is showing a dimension constrained by height in most cases he posted >>> (256x256, 1024x768, 500x400, 205x246, etc.) but fitting a 64px max height pixel dimension, typical of most landscape "photos". So my guess is he wants an image that is always 64 pixels in height. To achieve that, do the following:
<img id="photo1" style="height:64px;width:auto;" src="photo.jpg" height="64" />
This solution guarantees the images are all 64 pixels max in height and allows width to extend or shrink based on each image's aspect ratio. Setting height to 64 in the img height
attribute reserves a space in the browser's Rendertree layout as images download, so the content doesn't shift waiting for images to download. Also, the new HTML5 standard does not always honor width and height attributes. They are dimensional "hints" only, not final dimensions of the image. If in your style sheet you reset or change the image height and width, the actual values in the images attributes get reset to either your CSS value or the images native default dimensions. Setting the CSS height
to "64px" and the width
to "auto" forces width to start with the native image width (not image attribute width) and then calculate a new aspect-ratio using the CSS style for height. That gets you a new width. So the height and width "img" attributes are really not needed here and just force the browser to do extra calculations.
If you are using C# 3.0 or higher you can do the following
foreach ( TextBox tb in this.Controls.OfType<TextBox>()) {
..
}
Without C# 3.0 you can do the following
foreach ( Control c in this.Controls ) {
TextBox tb = c as TextBox;
if ( null != tb ) {
...
}
}
Or even better, write OfType in C# 2.0.
public static IEnumerable<T> OfType<T>(IEnumerable e) where T : class {
foreach ( object cur in e ) {
T val = cur as T;
if ( val != null ) {
yield return val;
}
}
}
foreach ( TextBox tb in OfType<TextBox>(this.Controls)) {
..
}
To update TechDo's answer for SQL server 2012. You need to change: 'FROM ' + @TableName + ' (NOLOCK) '
to FROM ' + @TableName + 'WITH (NOLOCK) ' +
Other wise you will get the following error: Deprecated feature 'Table hint without WITH' is not supported in this version of SQL Server.
Below is the complete updated stored procedure:
CREATE PROC SearchAllTables
(
@SearchStr nvarchar(100)
)
AS
BEGIN
CREATE TABLE #Results (ColumnName nvarchar(370), ColumnValue nvarchar(3630))
SET NOCOUNT ON
DECLARE @TableName nvarchar(256), @ColumnName nvarchar(128), @SearchStr2 nvarchar(110)
SET @TableName = ''
SET @SearchStr2 = QUOTENAME('%' + @SearchStr + '%','''')
WHILE @TableName IS NOT NULL
BEGIN
SET @ColumnName = ''
SET @TableName =
(
SELECT MIN(QUOTENAME(TABLE_SCHEMA) + '.' + QUOTENAME(TABLE_NAME))
FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_TYPE = 'BASE TABLE'
AND QUOTENAME(TABLE_SCHEMA) + '.' + QUOTENAME(TABLE_NAME) > @TableName
AND OBJECTPROPERTY(
OBJECT_ID(
QUOTENAME(TABLE_SCHEMA) + '.' + QUOTENAME(TABLE_NAME)
), 'IsMSShipped'
) = 0
)
WHILE (@TableName IS NOT NULL) AND (@ColumnName IS NOT NULL)
BEGIN
SET @ColumnName =
(
SELECT MIN(QUOTENAME(COLUMN_NAME))
FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_SCHEMA = PARSENAME(@TableName, 2)
AND TABLE_NAME = PARSENAME(@TableName, 1)
AND DATA_TYPE IN ('char', 'varchar', 'nchar', 'nvarchar', 'int', 'decimal')
AND QUOTENAME(COLUMN_NAME) > @ColumnName
)
IF @ColumnName IS NOT NULL
BEGIN
INSERT INTO #Results
EXEC
(
'SELECT ''' + @TableName + '.' + @ColumnName + ''', LEFT(' + @ColumnName + ', 3630)
FROM ' + @TableName + 'WITH (NOLOCK) ' +
' WHERE ' + @ColumnName + ' LIKE ' + @SearchStr2
)
END
END
END
SELECT ColumnName, ColumnValue FROM #Results
END
These days with jQuery 1.6.1 or above it is recommended that .prop() be used when setting boolean attributes/properties.
$("#fieldName").prop("readonly", true);
If it's throwing no error but still not firing the click event when you click the submit button, try to add action="YourPage.aspx"
to your form.
I posted this answer because I have tried with most of the sed
commend example provided above which does not work for me in my Unix box and giving me error message Label too long: {:q;N;s/\n/ /g;t q}
. Finally I made my requirement and hence shared here which works in all Unix/Linux environment:-
line=$(while read line; do echo -n "$line "; done < yoursourcefile.txt)
echo $line |sed 's/ //g' > sortedoutput.txt
The first line will remove all the new line from file yoursourcefile.txt
and will produce a single line. And second sed
command will remove all the spaces from it.
No, you have to use the underscore, but I believe that VB.NET 10 will allow multiple lines w/o the underscore, only requiring if it can't figure out where the end should be.
BalusC's list is solid. One additional way this field frequently appears empty is when the user is behind a proxy server. This is similar to being behind a firewall but is slightly different so I wanted to mention it for the sake of completeness.
I'm not exactly sure what's causing this. You can try looking in your socket.py (mine is a different version, so line numbers from the trace don't match, and I'm afraid some other details might not match as well).
Anyway, it seems like a good practice to put your url fetching code in a try: ... except: ...
block, and handle this with a short pause and a retry. The URL you're trying to fetch may be down, or too loaded, and that's stuff you'll only be able to handle in with a retry anyway.
I found something very useful on this site when I was searching for an answer on this question. You can check it out at http://www.codingforums.com/javascript-programming/230503-how-get-margin-left-value.html. The part that helped me was the following:
/***
* get live runtime value of an element's css style
* http://robertnyman.com/2006/04/24/get-the-rendered-style-of-an-element
* note: "styleName" is in CSS form (i.e. 'font-size', not 'fontSize').
***/
var getStyle = function(e, styleName) {
var styleValue = "";
if (document.defaultView && document.defaultView.getComputedStyle) {
styleValue = document.defaultView.getComputedStyle(e, "").getPropertyValue(styleName);
} else if (e.currentStyle) {
styleName = styleName.replace(/\-(\w)/g, function(strMatch, p1) {
return p1.toUpperCase();
});
styleValue = e.currentStyle[styleName];
}
return styleValue;
}
////////////////////////////////////
var e = document.getElementById('yourElement');
var marLeft = getStyle(e, 'margin-left');
console.log(marLeft); // 10px
_x000D_
#yourElement {
margin-left: 10px;
}
_x000D_
<div id="yourElement"></div>
_x000D_
Short & Sweet:
/**
* Get a diff between two dates
*
* @param oldDate the old date
* @param newDate the new date
* @return the diff value, in the days
*/
public static long getDateDiff(SimpleDateFormat format, String oldDate, String newDate) {
try {
return TimeUnit.DAYS.convert(format.parse(newDate).getTime() - format.parse(oldDate).getTime(), TimeUnit.MILLISECONDS);
} catch (Exception e) {
e.printStackTrace();
return 0;
}
}
Usage:
int dateDifference = (int) getDateDiff(new SimpleDateFormat("dd/MM/yyyy"), "29/05/2017", "31/05/2017");
System.out.println("dateDifference: " + dateDifference);
Output:
dateDifference: 2
Kotlin Version:
@ExperimentalTime
fun getDateDiff(format: SimpleDateFormat, oldDate: String, newDate: String): Long {
return try {
DurationUnit.DAYS.convert(
format.parse(newDate).time - format.parse(oldDate).time,
DurationUnit.MILLISECONDS
)
} catch (e: Exception) {
e.printStackTrace()
0
}
}
Do we have java syntax corresponding to below process
val dfResults = dfSource.select(concat_ws(",",dfSource.columns.map(c => col(c)): _*))
Either use literal non-breaking space symbol (yes, you can copy/paste it), HTML entity, or, if you're dealing with big pre-formatted block, use white-space
CSS property.
Single quotes are very strong. Once inside, there's nothing you can do to invoke variable substitution, until you leave. Use double quotes instead:
echo $LINE | sed -e "s/12345678/$replace/g"
The mutable can be handy when you are overriding a const virtual function and want to modify your child class member variable in that function. In most of the cases you would not want to alter the interface of the base class, so you have to use mutable member variable of your own.
Old post, but I thought I would share my solution because there aren't many solutions out there for this issue.
If you're running an old Windows Server 2003 machine, you likely need to install a hotfix (KB938397).
This problem occurs because the Cryptography API 2 (CAPI2) in Windows Server 2003 does not support the SHA2 family of hashing algorithms. CAPI2 is the part of the Cryptography API that handles certificates.
https://support.microsoft.com/en-us/kb/938397
For whatever reason, Microsoft wants to email you this hotfix instead of allowing you to download directly. Here's a direct link to the hotfix from the email:
http://hotfixv4.microsoft.com/Windows Server 2003/sp3/Fix200653/3790/free/315159_ENU_x64_zip.exe
Check out this angular-table directive.
It seem like your Resort
method doesn't declare a compareTo
method. This method typically belongs to the Comparable
interface. Make sure your class implements it.
Additionally, the compareTo
method is typically implemented as accepting an argument of the same type as the object the method gets invoked on. As such, you shouldn't be passing a String
argument, but rather a Resort
.
Alternatively, you can compare the names of the resorts. For example
if (resortList[mid].getResortName().compareTo(resortName)>0)
Surely have a mutex-wrapped variable initialised to false
, that the thread sets to true
as the last thing it does before exiting. Is that atomic enough for your needs?
Another solution for typescript user:
import Vue from "vue";
import Component from "vue-class-component";
@Component({
beforeRouteLeave(to, from, next) {
// incase if you want to access `this`
// const self = this as any;
next();
}
})
export default class ComponentName extends Vue {}
This problem can be fixed by installing the C++ compiler (python27 or python26). Download it from Microsoft https://www.microsoft.com/en-us/download/details.aspx?id=44266 and re-run the command : pip install pycrypto
to run the gui web access when you kill the process of easy_install.exe
.
Update 2018
Bootstrap 4
Now that BS4 is flexbox, the fixed-fluid is simple. Just set the width of the fixed column, and use the .col
class on the fluid column.
.sidebar {
width: 180px;
min-height: 100vh;
}
<div class="row">
<div class="sidebar p-2">Fixed width</div>
<div class="col bg-dark text-white pt-2">
Content
</div>
</div>
http://www.codeply.com/go/7LzXiPxo6a
Bootstrap 3..
One approach to a fixed-fluid layout is using media queries that align with Bootstrap's breakpoints so that you only use the fixed width columns are larger screens and then let the layout stack responsively on smaller screens...
@media (min-width:768px) {
#sidebar {
min-width: 300px;
max-width: 300px;
}
#main {
width:calc(100% - 300px);
}
}
Working Bootstrap 3 Fixed-Fluid Demo
Related Q&A:
Fixed width column with a container-fluid in bootstrap
How to left column fixed and right scrollable in Bootstrap 4, responsive?
I created a custom view that is at 100%. Use the dropdowns then click to view page layout to go back to a smaller view.
Looks like you missed some options, try to add:
position: relative;
top: 25px;
Or run a pip install --upgrade pip enum34
You need to use the scrollTop
property.
document.getElementById('box').scrollTop
When you open a file, the system points to the beginning of the file. Any read or write you do will happen from the beginning. A seek()
operation moves that pointer to some other part of the file so you can read or write at that place.
So, if you want to read the whole file but skip the first 20 bytes, open the file, seek(20)
to move to where you want to start reading, then continue with reading the file.
Or say you want to read every 10th byte, you could write a loop that does seek(9, 1)
(moves 9 bytes forward relative to the current positions), read(1)
(reads one byte), repeat.
Here's a real world example with the use of non-minified versus minified assets in your layout.
Web.Config
<appSettings>
<add key="Environment" value="Dev" />
</appSettings>
Razor Template - use that var above like this:
@if (System.Configuration.ConfigurationManager.AppSettings["Environment"] == "Dev")
{
<link type="text/css" rel="stylesheet" href="@Url.Content("~/Content/styles/theme.css" )">
}else{
<link type="text/css" rel="stylesheet" href="@Url.Content("~/Content/styles/blue_theme.min.css" )">
}
a = range(1,10)
itemsToRemove = set([2, 3, 7])
b = filter(lambda x: x not in itemsToRemove, a)
or
b = [x for x in a if x not in itemsToRemove]
Don't create the set inside the lambda
or inside the comprehension. If you do, it'll be recreated on every iteration, defeating the point of using a set at all.
In fact, the solution is very easy...
Original:
<form action="product.php" method="get" name="frmProduct" id="frmProduct"
enctype="multipart/form-data">
<input onclick="submitAction()" id="submit_value" type="button"
name="submit_value" value="">
</form>
<script type="text/javascript">
function submitAction()
{
document.frmProduct.submit();
}
</script>
Solution:
<form action="product.php" method="get" name="frmProduct" id="frmProduct"
enctype="multipart/form-data">
</form>
<!-- Place the button here -->
<input onclick="submitAction()" id="submit_value" type="button"
name="submit_value" value="">
<script type="text/javascript">
function submitAction()
{
document.frmProduct.submit();
}
</script>
These answers are all good if you want to follow good conventions but the OP wanted something simple, which is what I wanted too instead of dealing with GUI design patterns. If all you want to do is have a string in a basic GUI app you can update ad-hoc without anything fancy, you can just access it directly in your C# source.
Let's say you've got a really basic WPF app MainWindow XAML like this,
<Window x:Class="MyWPFApp.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:MyWPFApp"
mc:Ignorable="d"
Title="MainWindow"
Height="200"
Width="400"
Background="White" >
<Grid>
<TextBlock x:Name="textBlock"
Text=".."
HorizontalAlignment="Center"
VerticalAlignment="Top"
FontWeight="Bold"
FontFamily="Helvetica"
FontSize="16"
Foreground="Blue" Margin="0,10,0,0"
/>
<Button x:Name="Find_Kilroy"
Content="Poke Kilroy"
Click="Button_Click_Poke_Kilroy"
HorizontalAlignment="Center"
VerticalAlignment="Center"
FontFamily="Helvetica"
FontWeight="Bold"
FontSize="14"
Width="280"
/>
</Grid>
</Window>
That will look something like this:
In your MainWindow XAML's source, you could have something like this where all we're doing in changing the value directly via textBlock.Text
's get
/set
functionality:
using System.Windows;
namespace MyWPFApp
{
public partial class MainWindow : Window
{
public MainWindow() { InitializeComponent(); }
private void Button_Click_Poke_Kilroy(object sender, RoutedEventArgs e)
{
textBlock.Text = " \\|||/\r\n" +
" (o o) \r\n" +
"----ooO- (_) -Ooo----";
}
}
}
Then when you trigger that click event by clicking the button, voila! Kilroy appears :)
From tuple to list to tuple :
a = ('2',)
b = 'b'
l = list(a)
l.append(b)
tuple(l)
Or with a longer list of items to append
a = ('2',)
items = ['o', 'k', 'd', 'o']
l = list(a)
for x in items:
l.append(x)
print tuple(l)
gives you
>>>
('2', 'o', 'k', 'd', 'o')
The point here is: List is a mutable sequence type. So you can change a given list by adding or removing elements. Tuple is an immutable sequence type. You can't change a tuple. So you have to create a new one.
In straight Javascript you could do something similar to the following:
var kvpairs = [];
var form = // get the form somehow
for ( var i = 0; i < form.elements.length; i++ ) {
var e = form.elements[i];
kvpairs.push(encodeURIComponent(e.name) + "=" + encodeURIComponent(e.value));
}
var queryString = kvpairs.join("&");
In short, this creates a list of key-value pairs (name=value) which is then joined together using "&" as a delimiter.
You can provide more flexibility to your users by provide Browser Button to them
Private Sub btn_browser_file_Click()
Dim xRow As Long
Dim sh1 As Worksheet
Dim xl_app As Excel.Application
Dim xl_wk As Excel.Workbook
Dim WS As Workbook
Dim xDirect$, xFname$, InitialFoldr$
InitialFoldr$ = "C:\"
With Application.FileDialog(msoFileDialogFolderPicker)
.InitialFileName = Application.DefaultFilePath & "\"
.Title = "Please select a folder to list Files from"
.InitialFileName = InitialFoldr$
.Show
Range("H13").Activate
If .SelectedItems.Count <> 0 Then
xDirect$ = .SelectedItems(1) & "\"
Range("h12").Value = xDirect$
xFname$ = Dir(xDirect$, 7)
Do While xFname$ <> ""
If (Format(FileDateTime(xDirect$ & "\" & xFname$), "MM/DD/YYYY") > Format(Range("H10").Value, "MM/DD/YYYY")) Then
ActiveCell.Offset(xRow) = xFname$
xRow = xRow + 1
xFname$ = Dir
Else
xFname$ = Dir
xRow = xRow
End If
Loop
End If
End With
with this piece of code you can achieve this, easily. Tested code
If you're using Msysgit or Cygwin you can find a good tutorial at SSH-Agent in msysgit and cygwin and bash:
Add a file called .bashrc
to your home folder.
Open the file and paste in:
#!/bin/bash
eval `ssh-agent -s`
ssh-add
This assumes that your key is in the conventional ~/.ssh/id_rsa
location. If it isn't, include a full path after the ssh-add
command.
Add to or create file ~/.ssh/config
with the contents
ForwardAgent yes
In the original tutorial the ForwardAgent
param is Yes
, but it's a typo. Use all lowercase or you'll get errors.
Restart Msysgit. It will ask you to enter your passphrase once, and that's it (until you end the session, or your ssh-agent is killed.)
If you don't want to start a new ssh-agent every time you open a terminal, check out Keychain. I'm on a Mac now, so I used the tutorial ssh-agent with zsh & keychain on Mac OS X to set it up, but I'm sure a Google search will have plenty of info for Windows.
Update: A better solution on Mac is to add your key to the Mac OS Keychain:
ssh-add -K ~/.ssh/id_rsa
Simple as that.