You can use a kind of continue
by using a nested Do ... Loop While False
:
'This sample will output 1 and 3 only
Dim i As Integer
For i = 1 To 3: Do
If i = 2 Then Exit Do 'Exit Do is the Continue
Debug.Print i
Loop While False: Next i
You need spaces around the operator =~
i="test" if [[ $i =~ "200[78]" ]]; then echo "OK" else echo "not OK" fi
The zmbq solution is good, but cannot be used in all situations, such as inside a block of code like a FOR DO(...) loop.
An alternative is to use an indicator variable. Initialize it to be undefined, and then define it only if any one of the OR conditions is true. Then use IF DEFINED as a final test - no need to use delayed expansion.
FOR ..... DO (
set "TRUE="
IF cond1 set TRUE=1
IF cond2 set TRUE=1
IF defined TRUE (
...
) else (
...
)
)
You could add the ELSE IF logic that arasmussen uses on the grounds that it might perform a wee bit faster if the 1st condition is true, but I never bother.
Addendum - This is a duplicate question with nearly identical answers to Using an OR in an IF statement WinXP Batch Script
Final addendum - I almost forgot my favorite technique to test if a variable is any one of a list of case insensitive values. Initialize a test variable containing a delimitted list of acceptable values, and then use search and replace to test if your variable is within the list. This is very fast and uses minimal code for an arbitrarily long list. It does require delayed expansion (or else the CALL %%VAR%% trick). Also the test is CASE INSENSITIVE.
set "TEST=;val1;val2;val3;val4;val5;"
if "!TEST:;%VAR%;=!" neq "!TEST!" (echo true) else (echo false)
The above can fail if VAR contains =
, so the test is not fool-proof.
If doing the test within a block where delayed expansion is needed to access current value of VAR then
for ... do (
set "TEST=;val1;val2;val3;val4;val5;"
for /f %%A in (";!VAR!;") do if "!TEST:%%A=!" neq "!TEST!" (echo true) else (echo false)
)
FOR options like "delims=" might be needed depending on expected values within VAR
The above strategy can be made reliable even with =
in VAR by adding a bit more code.
set "TEST=;val1;val2;val3;val4;val5;"
if "!TEST:;%VAR%;=!" neq "!TEST!" if "!TEST:;%VAR%;=;%VAR%;"=="!TEST!" echo true
But now we have lost the ability of providing an ELSE clause unless we add an indicator variable. The code has begun to look a bit "ugly", but I think it is the best performing reliable method for testing if VAR is any one of an arbitrary number of case-insensitive options.
Finally there is a simpler version that I think is slightly slower because it must perform one IF for each value. Aacini provided this solution in a comment to the accepted answer in the before mentioned link
for %%A in ("val1" "val2" "val3" "val4" "val5") do if "%VAR%"==%%A echo true
The list of values cannot include the * or ? characters, and the values and %VAR%
should not contain quotes. Quotes lead to problems if the %VAR%
also contains spaces or special characters like ^
, &
etc. One other limitation with this solution is it does not provide the option for an ELSE clause unless you add an indicator variable. Advantages are it can be case sensitive or insensitive depending on presence or absence of IF /I
option.
You are trying to compare strings inside an arithmetic command (((...))
). Use [[
instead.
if [[ $username == "$username1" && $password == "$password1" ]] ||
[[ $username == "$username2" && $password == "$password2" ]]; then
Note that I've reduced this to two separate tests joined by ||
, with the &&
moved inside the tests. This is because the shell operators &&
and ||
have equal precedence and are simply evaluated from left to right. As a result, it's not generally true that a && b || c && d
is equivalent to the intended ( a && b ) || ( c && d )
.
This example uses regex_search to perform a substring search.
- name: make conditional variable
command: "file -s /dev/xvdf"
register: fsm_out
- name: makefs
command: touch "/tmp/condition_satisfied"
when: fsm_out.stdout | regex_search(' data')
ansible version: 2.4.3.0
You can't do that if USER is defined as a quoted string.
But you can do that if USER is just JACK or QUEEN or Joker or whatever.
There are two tricks to use:
#define JACK
to somethingSo let's start out with:
#define JACK_QUEEN_OTHER(u) EXPANSION1(ReSeRvEd_, u, 1, 2, 3)
Now, if I write JACK_QUEEN_OTHER(USER)
, and USER is JACK, the preprocessor
turns that into EXPANSION1(ReSeRvEd_, JACK, 1, 2, 3)
Step two is concatenation:
#define EXPANSION1(a, b, c, d, e) EXPANSION2(a##b, c, d, e)
Now JACK_QUEEN_OTHER(USER)
becomes EXPANSION2(ReSeRvEd_JACK, 1, 2, 3)
This gives the opportunity to add a number of commas according to whether or not a string matches:
#define ReSeRvEd_JACK x,x,x
#define ReSeRvEd_QUEEN x,x
If USER is JACK, JACK_QUEEN_OTHER(USER)
becomes EXPANSION2(x,x,x, 1, 2, 3)
If USER is QUEEN, JACK_QUEEN_OTHER(USER)
becomes EXPANSION2(x,x, 1, 2, 3)
If USER is other, JACK_QUEEN_OTHER(USER)
becomes EXPANSION2(ReSeRvEd_other, 1, 2, 3)
At this point, something critical has happened: the fourth argument to the EXPANSION2 macro is either 1, 2, or 3, depending on whether the original argument passed was jack, queen, or anything else. So all we have to do is pick it out. For long-winded reasons, we'll need two macros for the last step; they'll be EXPANSION2 and EXPANSION3, even though one seems unnecessary.
Putting it all together, we have these 6 macros:
#define JACK_QUEEN_OTHER(u) EXPANSION1(ReSeRvEd_, u, 1, 2, 3)
#define EXPANSION1(a, b, c, d, e) EXPANSION2(a##b, c, d, e)
#define EXPANSION2(a, b, c, d, ...) EXPANSION3(a, b, c, d)
#define EXPANSION3(a, b, c, d, ...) d
#define ReSeRvEd_JACK x,x,x
#define ReSeRvEd_QUEEN x,x
And you might use them like this:
int main() {
#if JACK_QUEEN_OTHER(USER) == 1
printf("Hello, Jack!\n");
#endif
#if JACK_QUEEN_OTHER(USER) == 2
printf("Hello, Queen!\n");
#endif
#if JACK_QUEEN_OTHER(USER) == 3
printf("Hello, who are you?\n");
#endif
}
Obligatory godbolt link: https://godbolt.org/z/8WGa19
MSVC Update: You have to parenthesize slightly differently to make things also work in MSVC. The EXPANSION* macros look like this:
#define EXPANSION1(a, b, c, d, e) EXPANSION2((a##b, c, d, e))
#define EXPANSION2(x) EXPANSION3 x
#define EXPANSION3(a, b, c, d, ...) d
Obligatory: https://godbolt.org/z/96Y8a1
$user = User::where('email', request('email')->first();
return (count($user) > 0 ? 'Email Exist' : 'Email Not Exist');
You are looking for "|." See http://cran.r-project.org/doc/manuals/R-intro.html#Logical-vectors
my.data.frame <- data[(data$V1 > 2) | (data$V2 < 4), ]
When you have multiple if
conditions, numpy.select
is the way to go:
In [4102]: import numpy as np
In [4098]: conditions = [df.A.eq(df.B), df.A.gt(df.B), df.A.lt(df.B)]
In [4096]: choices = [0, 1, -1]
In [4100]: df['C'] = np.select(conditions, choices)
In [4101]: df
Out[4101]:
A B C
a 2 2 0
b 3 1 1
c 1 3 -1
If the usage pattern justifies it, why not? While your team doesn't recognize the operator right away, with time they could. Humans learn new words all the time. Why not in programming?
The only caution I might state is that "^" doesn't have the short circuit semantics of your second boolean check. If you really need the short circuit semantics, then a static util method works too.
public static boolean xor(boolean a, boolean b) {
return (a && !b) || (b && !a);
}
You need to take out the $ signs before the row numbers in the formula....and the row number used in the formula should correspond to the first row of data, so if you are applying this to the ("applies to") range $B$2:$B$5 it must be this formula
=$B2>$C2
by using that "relative" version rather than your "absolute" one Excel (implicitly) adjusts the formula for each row in the range, as if you were copying the formula down
If they are from the same table, I think UNION
is the command you're looking for.
(If you'd ever need to select values from columns of different tables, you should look at JOIN
instead...)
You could try this:
$width:auto;
@mixin clearfix($width) {
@if $width == 'auto' {
// if width is not passed, or empty do this
} @else {
display: inline-block;
width: $width;
}
}
I'm not sure of your intended result, but setting a default value should return false.
The no-op command in shell is :
(colon).
if [ "$a" -ge 10 ]
then
:
elif [ "$a" -le 5 ]
then
echo "1"
else
echo "2"
fi
From the bash manual:
:
(a colon)
Do nothing beyond expanding arguments and performing redirections. The return status is zero.
Assuming you're using SQL Server, the boolean type doesn't exist, but the bit type does, which can hold only 0 or 1 where 0 represents False, and 1 represents True.
I would go this way:
select 1
from Products
where ProductId IN (1, 10, 100)
Here, a null or no row will be returned (if no row exists).
Or even:
select case when EXISTS (
select 1
from Products
where ProductId IN (1, 10, 100)
) then 1 else 0 end as [ProductExists]
Here, either of the scalar values 1 or 0 will always be returned (if no row exists).
There are two variants of CASE
, and you're not using the one that you think you are.
CASE case_value
WHEN when_value THEN statement_list
[WHEN when_value THEN statement_list] ...
[ELSE statement_list]
END CASE
Each condition is loosely equivalent to a if (case_value == when_value)
(pseudo-code).
However, you've put an entire condition as when_value
, leading to something like:
if (case_value == (case_value > 100))
Now, (case_value > 100)
evaluates to FALSE
, and is the only one of your conditions to do so. So, now you have:
if (case_value == FALSE)
FALSE
converts to 0
and, through the resulting full expression if (case_value == 0)
you can now see why the third condition fires.
Drop the first course_enrollment_settings
so that there's no case_value
, causing MySQL to know that you intend to use the second variant of CASE
:
CASE
WHEN search_condition THEN statement_list
[WHEN search_condition THEN statement_list] ...
[ELSE statement_list]
END CASE
Now you can provide your full conditionals as search_condition
.
Also, please read the documentation for features that you use.
try:
df['c2'] = df['c1'].apply(lambda x: 10 if x == 'Value' else x)
You can use MATCH
for instance.
Select the column from the first cell, for example cell A2 to cell A100 and insert a conditional formatting, using 'New Rule...' and the option to conditional format based on a formula.
In the entry box, put:
=MATCH(A2, 'Sheet2'!A:A, 0)
Pick the desired formatting (change the font to red or fill the cell background, etc) and click OK.
MATCH
takes the value A2
from your data table, looks into 'Sheet2'!A:A
and if there's an exact match (that's why there's a 0
at the end), then it'll return the row number.
Note: Conditional formatting based on conditions from other sheets is available only on Excel 2010 onwards. If you're working on an earlier version, you might want to get the list of 'Don't check' in the same sheet.
EDIT: As per new information, you will have to use some reverse matching. Instead of the above formula, try:
=SUM(IFERROR(SEARCH('Sheet2'!$A$1:$A$44, A2),0))
I am not sure I understood your question, but if you write:
mask_data[:3, :3] = 1
mask_data[3:, 3:] = 0
This will make all values of mask data whose x and y indexes are less than 3 to be equal to 1 and all rest to be equal to 0
You can do this in the 'Conditional Formatting' tool in the Home tab of Excel 2010.
Assuming the existing rule is 'Use a formula to dtermine which cells to format':
Edit the existing rule, so that the 'Formula' refers to relative rows and columns (i.e. remove $s), and then in the 'Applies to' box, click the icon to make the sheet current and select the cells you want the formatting to apply to (absolute cell references are ok here), then go back to the tool panel and click Apply.
This will work assuming the relative offsets are appropriate throughout your desired apply-to range.
You can copy conditional formatting from one cell to another or a range using copy and paste-special with formatting only, assuming you do not mind copying the normal formats.
In SQL
, you do it this way:
SELECT CASE WHEN @selectField1 = 1 THEN Field1 ELSE NULL END,
CASE WHEN @selectField2 = 1 THEN Field2 ELSE NULL END
FROM Table
Relational model does not imply dynamic field count.
Instead, if you are not interested in a field value, you just select a NULL
instead and parse it on the client.
Just remove the .val(). Like:
if ( $('html').attr('lang') == 'fr-FR' ) {
// do this
} else {
// do that
}
There is conditional assignment in Python 2.5 and later - the syntax is not very obvious hence it's easy to miss. Here's how you do it:
x = true_value if condition else false_value
For further reference, check out the Python 2.5 docs.
The bug is probably somewhere else in your code, because it should work fine:
>>> 3 not in [2, 3, 4]
False
>>> 3 not in [4, 5, 6]
True
Or with tuples:
>>> (2, 3) not in [(2, 3), (5, 6), (9, 1)]
False
>>> (2, 3) not in [(2, 7), (7, 3), "hi"]
True
There are 2 options to find matching text; string.match
or string.find
.
Both of these perform a regex search on the string to find matches.
string.find()
string.find(subject string, pattern string, optional start position, optional plain flag)
Returns the startIndex
& endIndex
of the substring found.
The plain
flag allows for the pattern to be ignored and intead be interpreted as a literal. Rather than (tiger)
being interpreted as a regex capture group matching for tiger
, it instead looks for (tiger)
within a string.
Going the other way, if you want to regex match but still want literal special characters (such as .()[]+-
etc.), you can escape them with a percentage; %(tiger%)
.
You will likely use this in combination with string.sub
str = "This is some text containing the word tiger."
if string.find(str, "tiger") then
print ("The word tiger was found.")
else
print ("The word tiger was not found.")
end
string.match()
string.match(s, pattern, optional index)
Returns the capture groups found.
str = "This is some text containing the word tiger."
if string.match(str, "tiger") then
print ("The word tiger was found.")
else
print ("The word tiger was not found.")
end
You can use DSUM, which will be more flexible. Like if you want to change the name of Salesman or the Quote Month, you need not change the formula, but only some criteria cells. Please see the link below for details...Even the criteria can be formula to copied from other sheets
http://office.microsoft.com/en-us/excel-help/dsum-function-HP010342460.aspx?CTT=1
You get the error because if
can only evaluate a logical
vector of length 1.
Maybe you miss the difference between &
(|
) and &&
(||
). The shorter version works element-wise and the longer version uses only the first element of each vector, e.g.:
c(TRUE, TRUE) & c(TRUE, FALSE)
# [1] TRUE FALSE
# c(TRUE, TRUE) && c(TRUE, FALSE)
[1] TRUE
You don't need the if
statement at all:
mut1 <- trip$Ref.y=='G' & trip$Variant.y=='T'|trip$Ref.y=='C' & trip$Variant.y=='A'
trip[mut1, "mutType"] <- "G:C to T:A"
the safest way is to put the ! for the regex negation within the [[ ]]
like this:
if [[ ! ${STR} =~ YOUR_REGEX ]]; then
otherwise it might fail on certain systems.
Looks like you are missing a leading slash. Perhaps try:
Scanner s = new Scanner(new File("/home/me/java/ex.txt"));
(as to where it looks for files by default, it is where the JVM is run from for relative paths like the one you have in your question)
Better late than never!
https://getbootstrap.com/docs/4.5/layout/grid/
<div class="container">
<div class="row">
<div class="col-sm">
One of three columns
</div>
<div class="col-sm">
One of three columns
</div>
<div class="col-sm">
One of three columns
</div>
</div>
</div>
Based on Mohamed23gharbi's answer:
function change(selector, value) {
var sortBySelect = document.querySelector(selector);
sortBySelect.value = value;
sortBySelect.dispatchEvent(new Event("change"));
}
function click(selector) {
var sortBySelect = document.querySelector(selector);
sortBySelect.dispatchEvent(new Event("click"));
}
function test() {
change("select#MySelect", 19);
click("button#MyButton");
click("a#MyLink");
}
In my case, where the elements were created by vue, this is the only way that works.
Because the static version of the .Equal
method was not mentioned so far, I would like to add this here to summarize and to compare the 3 variations.
MyString.Equals("Somestring")) //Method 1
MyString == "Somestring" //Method 2
String.Equals("Somestring", MyString); //Method 3 (static String.Equals method) - better
where MyString
is a variable that comes from somewhere else in the code.
Background info and to summerize:
In Java using ==
to compare strings should not be used. I mention this in case you need to use both languages and also
to let you know that using ==
can also be replaced with something better in C#.
In C# there's no practical difference for comparing strings using Method 1 or Method 2 as long as both are of type string. However, if one is null, one is of another type (like an integer), or one represents an object that has a different reference, then, as the initial question shows, you may experience that comparing the content for equality may not return what you expect.
Suggested solution:
Because using ==
is not exactly the same as using .Equals
when comparing things, you can use the static String.Equals method instead. This way, if the two sides are not the same type you will still compare the content and if one is null, you will avoid the exception.
bool areEqual = String.Equals("Somestring", MyString);
It is a little more to write, but in my opinion, safer to use.
Here is some info copied from Microsoft:
public static bool Equals (string a, string b);
Parameters
a
String
The first string to compare, or null
.
b
String
The second string to compare, or null
.
Returns Boolean
true
if the value of a
is the same as the value of b
; otherwise, false
. If both a
and b
are null
, the method returns true
.
This was done using Toad for Oracle 12.8.0.49
ALTER TABLE SCHEMA.TABLENAME
MODIFY (COLUMNNAME NEWDATATYPE(LENGTH)) ;
For example,
ALTER TABLE PAYROLL.EMPLOYEES
MODIFY (JOBTITLE VARCHAR2(12)) ;
$('#summary').load('ajax.php', function() {
alert('Loaded.');
});
If you want to print "all" lines, there is a simple working solution:
grep "test" -A 9999999 -B 9999999
You could use toPrecision() and toFixed() methods of Number type. Check this link How can I format numbers as money in JavaScript?
function loadMarkers(){
{% for location in object_list %}
var point = new google.maps.LatLng({{location.latitude}},{{location.longitude}});
var marker = new google.maps.Marker({
position: point,
map: map,
url: {{location.id}},
});
google.maps.event.addDomListener(marker, 'click', function() {
window.location.href = this.url; });
{% endfor %}
Make the member private and add a setter/getter pair. In your setter, if null, then set default value instead. Additionally, I have shown the snippet with the getter also returning a default when internal value is null.
class JavaObject {
private static final String DEFAULT="Default Value";
public JavaObject() {
}
@NotNull
private String notNullMember;
public void setNotNullMember(String value){
if (value==null) { notNullMember=DEFAULT; return; }
notNullMember=value;
return;
}
public String getNotNullMember(){
if (notNullMember==null) { return DEFAULT;}
return notNullMember;
}
public String optionalMember;
}
iloc
df1 = datasX.iloc[:, :72]
df2 = datasX.iloc[:, 72:]
Try this
`var url = "http://stackoverflow.com";
$(location).attr('href',url);`
Or you can do something like this
// similar behavior as an HTTP redirect
window.location.replace("http://stackoverflow.com");
// similar behavior as clicking on a link
window.location.href = "http://stackoverflow.com";
and add a return false at the end of your function call
The single most important difference between the two is that you should start using JupyterLab straight away, and that you should not worry about Jupyter Notebook at all. Because:
JupyterLab will eventually replace the classic Jupyter Notebook. Throughout this transition, the same notebook document format will be supported by both the classic Notebook and JupyterLab
Other posts have suggested that Jupyter Notebook (JN) could potentially be easier to use than JupyterLab (JL) for beginners. But I would have to disagree.
A great advantage with JL, and arguably one of the most important differences between JL and JN, is that you can more easily run a single line and even highlighted text. I prefer using a keyboard shortcut for this, and assigning shortcuts is pretty straight-forward.
And the fact that you can execute code in a Python console makes JL much more fun to work with. Other answers have already mentioned this, but JL can in some ways be considered a tool to run Notebooks and more. So the way I use JupyterLab is by having it set up with an .ipynb file, a file browser and a python console like this:
And now you have these tools at your disposal:
Ctrl+Enter
Shift+Enter
IPython intercepts those, they're called built-in magic commands, here's the list: https://ipython.org/ipython-doc/dev/interactive/magics.html
You can also create your own custom magics, https://ipython.org/ipython-doc/dev/config/custommagics.html
Your timeit
is here https://ipython.org/ipython-doc/dev/interactive/magics.html#magic-timeit
The documentation on how to do this can be found on MSDN. The key extract is this:
To programmatically add or modify system environment variables, add them to the HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Session Manager\Environment registry key, then broadcast a
WM_SETTINGCHANGE
message with lParam set to the string "Environment". This allows applications, such as the shell, to pick up your updates.
Note that your application will need elevated admin rights in order to be able to modify this key.
You indicate in the comments that you would be happy to modify just the per-user environment. Do this by editing the values in HKEY_CURRENT_USER\Environment. As before, make sure that you broadcast a WM_SETTINGCHANGE
message.
You should be able to do this from your Java application easily enough using the JNI registry classes.
I was running into the same issue and wanted to avoid adding the intent filter as you described. After some digging, I found an xml attribute android:exported that you should add to the activity you would like to be called.
It is by default set to false if no intent filter added to your activity, but if you do have an intent filter it gets set to true.
here is the documentation http://developer.android.com/guide/topics/manifest/activity-element.html#exported
tl;dr: addandroid:exported="true"
to your activity in your AndroidManifest.xml file and avoid adding the intent-filter :)
In my situation, I was comparing table schema column count for 2 identical tables in 2 databases; one is the main database and the other is the archival database. I did this (SQL 2012+):
DECLARE @colCount1 INT;
DECLARE @colCount2 INT;
SELECT @colCount1 = COUNT(COLUMN_NAME) FROM MainDB.INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = 'SomeTable';
SELECT @colCount2 = COUNT(COLUMN_NAME) FROM ArchiveDB.INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = 'SomeTable';
IF (@colCount1 != @colCount2) THROW 5000, 'Number of columns in both tables are not equal. The archive schema may need to be updated.', 16;
The important thing to notice here is qualifying the database name before INFORMATION_SCHEMA
(which is a schema, like dbo
). This will allow the code to break, in case columns were added to the main database and not to the archival database, in which if the procedure were allowed to run, data loss would almost certainly occur.
I found the example above confusing. I am using React and JSX so I think it complicated the scenario.
I got clarification from TypeScript Deep Dive, which states for arrow generics:
Workaround: Use extends on the generic parameter to hint the compiler that it's a generic, this came from a simpler example that helped me.
const identity = < T extends {} >(arg: T): T => { return arg; }
That worked for me in Swift 5 like a charm, just add it to your viewDidLoad()
self.navigationItem.setHidesBackButton(true, animated: true)
Click on your project properties, go to the web section, from the Servers section, change from IIS express to Local IIS, it will create a virtual directory for you
This is absolutely possible. Although you shouldn't do it unless you know what you are dealing with. Took me about 2 days to figure it out. Here is a stored procedure where i enter: ---database name (schema name is "_" for readability) ---table name ---column ---column data type (column added is always null, otherwise you won't be able to insert) ---the position of the new column.
Since I'm working with tables from SAM toolkit (and some of them have > 80 columns) , the typical variable won't be able to contain the query. That forces the need of external file. Now be careful where you store that file and who has access on NTFS and network level.
Cheers!
USE [master]
GO
/****** Object: StoredProcedure [SP_Set].[TrasferDataAtColumnLevel] Script Date: 8/27/2014 2:59:30 PM ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE PROCEDURE [SP_Set].[TrasferDataAtColumnLevel]
(
@database varchar(100),
@table varchar(100),
@column varchar(100),
@position int,
@datatype varchar(20)
)
AS
BEGIN
set nocount on
exec ('
declare @oldC varchar(200), @oldCDataType varchar(200), @oldCLen int,@oldCPos int
create table Test ( dummy int)
declare @columns varchar(max) = ''''
declare @columnVars varchar(max) = ''''
declare @columnsDecl varchar(max) = ''''
declare @printVars varchar(max) = ''''
DECLARE MY_CURSOR CURSOR LOCAL STATIC READ_ONLY FORWARD_ONLY FOR
select column_name, data_type, character_maximum_length, ORDINAL_POSITION from ' + @database + '.INFORMATION_SCHEMA.COLUMNS where table_name = ''' + @table + '''
OPEN MY_CURSOR FETCH NEXT FROM MY_CURSOR INTO @oldC, @oldCDataType, @oldCLen, @oldCPos WHILE @@FETCH_STATUS = 0 BEGIN
if(@oldCPos = ' + @position + ')
begin
exec(''alter table Test add [' + @column + '] ' + @datatype + ' null'')
end
if(@oldCDataType != ''timestamp'')
begin
set @columns += @oldC + '' , ''
set @columnVars += ''@'' + @oldC + '' , ''
if(@oldCLen is null)
begin
if(@oldCDataType != ''uniqueidentifier'')
begin
set @printVars += '' print convert('' + @oldCDataType + '',@'' + @oldC + '')''
set @columnsDecl += ''@'' + @oldC + '' '' + @oldCDataType + '', ''
exec(''alter table Test add ['' + @oldC + ''] '' + @oldCDataType + '' null'')
end
else
begin
set @printVars += '' print convert(varchar(50),@'' + @oldC + '')''
set @columnsDecl += ''@'' + @oldC + '' '' + @oldCDataType + '', ''
exec(''alter table Test add ['' + @oldC + ''] '' + @oldCDataType + '' null'')
end
end
else
begin
if(@oldCLen < 0)
begin
set @oldCLen = 4000
end
set @printVars += '' print @'' + @oldC
set @columnsDecl += ''@'' + @oldC + '' '' + @oldCDataType + ''('' + convert(character,@oldCLen) + '') , ''
exec(''alter table Test add ['' + @oldC + ''] '' + @oldCDataType + ''('' + @oldCLen + '') null'')
end
end
if exists (select column_name from INFORMATION_SCHEMA.COLUMNS where table_name = ''Test'' and column_name = ''dummy'')
begin
alter table Test drop column dummy
end
FETCH NEXT FROM MY_CURSOR INTO @oldC, @oldCDataType, @oldCLen, @oldCPos END CLOSE MY_CURSOR DEALLOCATE MY_CURSOR
set @columns = reverse(substring(reverse(@columns), charindex('','',reverse(@columns)) +1, len(@columns)))
set @columnVars = reverse(substring(reverse(@columnVars), charindex('','',reverse(@columnVars)) +1, len(@columnVars)))
set @columnsDecl = reverse(substring(reverse(@columnsDecl), charindex('','',reverse(@columnsDecl)) +1, len(@columnsDecl)))
set @columns = replace(replace(REPLACE(@columns, '' '', ''''), char(9) + char(9),'' ''), char(9), '''')
set @columnVars = replace(replace(REPLACE(@columnVars, '' '', ''''), char(9) + char(9),'' ''), char(9), '''')
set @columnsDecl = replace(replace(REPLACE(@columnsDecl, '' '', ''''), char(9) + char(9),'' ''),char(9), '''')
set @printVars = REVERSE(substring(reverse(@printVars), charindex(''+'',reverse(@printVars))+1, len(@printVars)))
create table query (id int identity(1,1), string varchar(max))
insert into query values (''declare '' + @columnsDecl + ''
DECLARE MY_CURSOR CURSOR LOCAL STATIC READ_ONLY FORWARD_ONLY FOR '')
insert into query values (''select '' + @columns + '' from ' + @database + '._.' + @table + ''')
insert into query values (''OPEN MY_CURSOR FETCH NEXT FROM MY_CURSOR INTO '' + @columnVars + '' WHILE @@FETCH_STATUS = 0 BEGIN '')
insert into query values (@printVars )
insert into query values ( '' insert into Test ('')
insert into query values (@columns)
insert into query values ( '') values ( '' + @columnVars + '')'')
insert into query values (''FETCH NEXT FROM MY_CURSOR INTO '' + @columnVars + '' END CLOSE MY_CURSOR DEALLOCATE MY_CURSOR'')
declare @path varchar(100) = ''C:\query.sql''
declare @query varchar(500) = ''bcp "select string from query order by id" queryout '' + @path + '' -t, -c -S '' + @@servername + '' -T''
exec master..xp_cmdshell @query
set @query = ''sqlcmd -S '' + @@servername + '' -i '' + @path
EXEC xp_cmdshell @query
set @query = ''del '' + @path
exec xp_cmdshell @query
drop table ' + @database + '._.' + @table + '
select * into ' + @database + '._.' + @table + ' from Test
drop table query
drop table Test ')
END
If you just want the anchor color to stay the same as the anchor's parent element you can leverage inherit:
a, a:visited, a:hover, a:active {
color: inherit;
}
Notice there is no need to repeat the rule for each selector; just use a comma separated list of selectors (order matters for anchor pseudo elements). Also, you can apply the pseudo selectors to a class if you want to selectively disable the special anchor colors:
.special-link, .special-link:visited, .special-link:hover, .special-link:active {
color: inherit;
}
Your question only asks about the visited state, but I assumed you meant all of the states. You can remove the other selectors if you want to allow color changes on all but visited.
I believe you're looking for...
import config.logging_settings # @UnusedImport
Note the double space before the comment to avoid hitting other formatting warnings.
Also, depending on your IDE (if you're using one), there's probably an option to add the correct ignore rule (e.g., in Eclipse, pressing Ctrl + 1, while the cursor is over the warning, will auto-suggest @UnusedImport
).
if you are using Spring version of 3.1 or newer you can specify "produces" in @RequestMapping
annotation. Example below works for me out of box. No need of register converter or anything else if you have web mvc enabled (@EnableWebMvc
).
@ResponseBody
@RequestMapping(value = "/photo2", method = RequestMethod.GET, produces = MediaType.IMAGE_JPEG_VALUE)
public byte[] testphoto() throws IOException {
InputStream in = servletContext.getResourceAsStream("/images/no_image.jpg");
return IOUtils.toByteArray(in);
}
Using Java 8 streams:
double sum = m.stream()
.mapToDouble(a -> a)
.sum();
System.out.println(sum);
Late answer, but I figured I should add a link to my site because I have written a tutorial how to make an image cache for android: http://squarewolf.nl/2010/11/android-image-cache/ Update: the page has been taken offline as the source was outdated. I join @elenasys in her advice to use Ignition.
So to all the people who stumble upon this question and haven't found a solution: hope you enjoy! =D
You could unregister the control with
regsvr32 /u badboy.ocx
at the command line. Though i would suggest testing these things in a vmware.
As pointed out already, most standard implementations of List
are serializable. However you have to ensure that the objects referenced/contained within the list are also serializable.
Have a listen to this week's edition of the Floss Weekly podcast, which covers SOA. The descriptions are pretty high level and don't delve into too many technical details (although more concrete and recognizable examples of SOA projects would have been helpful.
Logits simply means that the function operates on the unscaled output of earlier layers and that the relative scale to understand the units is linear. It means, in particular, the sum of the inputs may not equal 1, that the values are not probabilities (you might have an input of 5).
tf.nn.softmax
produces just the result of applying the softmax function to an input tensor. The softmax "squishes" the inputs so that sum(input) = 1
: it's a way of normalizing. The shape of output of a softmax is the same as the input: it just normalizes the values. The outputs of softmax can be interpreted as probabilities.
a = tf.constant(np.array([[.1, .3, .5, .9]]))
print s.run(tf.nn.softmax(a))
[[ 0.16838508 0.205666 0.25120102 0.37474789]]
In contrast, tf.nn.softmax_cross_entropy_with_logits
computes the cross entropy of the result after applying the softmax function (but it does it all together in a more mathematically careful way). It's similar to the result of:
sm = tf.nn.softmax(x)
ce = cross_entropy(sm)
The cross entropy is a summary metric: it sums across the elements. The output of tf.nn.softmax_cross_entropy_with_logits
on a shape [2,5]
tensor is of shape [2,1]
(the first dimension is treated as the batch).
If you want to do optimization to minimize the cross entropy AND you're softmaxing after your last layer, you should use tf.nn.softmax_cross_entropy_with_logits
instead of doing it yourself, because it covers numerically unstable corner cases in the mathematically right way. Otherwise, you'll end up hacking it by adding little epsilons here and there.
Edited 2016-02-07:
If you have single-class labels, where an object can only belong to one class, you might now consider using tf.nn.sparse_softmax_cross_entropy_with_logits
so that you don't have to convert your labels to a dense one-hot array. This function was added after release 0.6.0.
In Python mutable objects are passed as reference, so you can pass a reference of the outer class to the inner class.
class OuterClass:
def __init__(self):
self.outer_var = 1
self.inner_class = OuterClass.InnerClass(self)
print('Inner variable in OuterClass = %d' % self.inner_class.inner_var)
class InnerClass:
def __init__(self, outer_class):
self.outer_class = outer_class
self.inner_var = 2
print('Outer variable in InnerClass = %d' % self.outer_class.outer_var)
Just did a quick google search and found that
System.getProperty("user.dir");
returns the current working directory as String. So to get a File out of this, just use
File projectDir = new File(System.getProperty("user.dir"));
Here's a function that, given an already created dataframe, will append a list as a new row. This should probably have error catchers thrown in, but if you know exactly what you're adding then it shouldn't be an issue.
import pandas as pd
import numpy as np
def addRow(df,ls):
"""
Given a dataframe and a list, append the list as a new row to the dataframe.
:param df: <DataFrame> The original dataframe
:param ls: <list> The new row to be added
:return: <DataFrame> The dataframe with the newly appended row
"""
numEl = len(ls)
newRow = pd.DataFrame(np.array(ls).reshape(1,numEl), columns = list(df.columns))
df = df.append(newRow, ignore_index=True)
return df
Following explanation actually explains how wait() and signal() of monitor differ from P and V of semaphore.
The wait() and signal() operations on condition variables in a monitor are similar to P and V operations on counting semaphores.
A wait statement can block a process's execution, while a signal statement can cause another process to be unblocked. However, there are some differences between them. When a process executes a P operation, it does not necessarily block that process because the counting semaphore may be greater than zero. In contrast, when a wait statement is executed, it always blocks the process. When a task executes a V operation on a semaphore, it either unblocks a task waiting on that semaphore or increments the semaphore counter if there is no task to unlock. On the other hand, if a process executes a signal statement when there is no other process to unblock, there is no effect on the condition variable. Another difference between semaphores and monitors is that users awaken by a V operation can resume execution without delay. Contrarily, users awaken by a signal operation are restarted only when the monitor is unlocked. In addition, a monitor solution is more structured than the one with semaphores because the data and procedures are encapsulated in a single module and that the mutual exclusion is provided automatically by the implementation.
Link: here for further reading. Hope it helps.
You can set CSS using three different ways as mentioned below :-
1.External style sheet
2.Internal style sheet
3.Inline style
Preferred / ideal way of setting the css style is using as external style sheets when the style is applied to many pages. With an external style sheet, you can change the look of an entire Web site by changing one file.
sample usage can be :-
<head>
<link rel="stylesheet" type="text/css" href="your_css_file_name.css">
</head>
If you want to apply a unique style to a single document then you can use Internal style sheet.
Don't use inline style sheet,as it mixes content with presentation and looses many advantages.
The answer depends on if you have the simple or complex polygons. Simple polygons must not have any line segment intersections. So they can have the holes but lines can't cross each other. Complex regions can have the line intersections - so they can have the overlapping regions, or regions that touch each other just by a single point.
For simple polygons the best algorithm is Ray casting (Crossing number) algorithm. For complex polygons, this algorithm doesn't detect points that are inside the overlapping regions. So for complex polygons you have to use Winding number algorithm.
Here is an excellent article with C implementation of both algorithms. I tried them and they work well.
MATLAB is, first and foremost, a commercial offering. Therefore, everything in MATLAB pretty much works out of the box. All the core functionality is solid, and if you're working on a special project then MATLAB probably has an add-on they can sell you that adds a lot of additional domain-specific .m files for you. It ain't cheap, but it works and it will get the job done without complaint.
Octave always shows its open-source, information-wants-to-be-free roots. It's free, and it will remind you that it's free at every opportunity. It's developed by volunteers who hate Windows with a passion. Therefore Octave runs on Windows grudgingly. It's quite surprising that as many MATLAB features exist as they do.
But here's the rub. Anytime you try to do something more than trivially complex, Octave suddenly breaks in subtle and hard to understand ways. Oops -- the terminal driver had an overflow somewhere deep in the OpenGL layer. You can't print. Oops -- the figure plots do strange things with their fonts. Good luck figuring out why. Oops -- there's some hidden dependency between Octave and some other obscure bit of free software, so it won't compile. Good luck figuring out which it is.
And the Octave response is hey! It's free software! You have all the source code, you can fix all those bugs yourself! Maybe if I had infinite time and resources on my hands, I could spend all my time fixing bugs in free software, but I personally don't. If I worked in academia, I might.
So at the core, the issue of whether to choose MATLAB or Octave comes down to one question. Interestingly, that question is always the same, when choosing between commercial vs. free software variants.
And the question is:
Do you have more money than time?
I can relate to the problem, there should be a shorthand like...
border: 1px solid red top bottom left;
Of course that doesn't work! Kobi's answer gave me an idea. Let's say you want to do top, bottom and left, but not right. Instead of doing border-top: border-left: border-bottom: (three statements) you could do two like this, the zero cancels out the right side.
border: 1px dashed yellow;
border-width:1px 0 1px 1px;
Two statements instead of three, small improvement :-D
I've used Quick Highlighter a lot. Works great for a huge list of languages.
If your label is long and goes on multiple rows setting the width and display:inline-block will help.
.form-field * {
vertical-align: middle;
}
.form-field input {
clear:left;
}
.form-field label {
width:200px;
display:inline-block;
}
<div class="form-field">
<input id="option1" type="radio" name="opt" value="1"/>
<label for="option1">Option 1 is very long and is likely to go on two lines.</label>
<input id="option2" type="radio" name="opt" value="2"/>
<label for="option2">Option 2 might fit into one line.</label>
</div>
Open command prompt go inside the maven folder and execute mvn -version, it will show you maven vesrion al
There's no simple answer to this question. Apple's mobile version of WebKit, used in iPhones, iPod Touches, and iPads, will scale the page to fit the screen, at which point the user can zoom in and out freely.
That said, you can design your page to minimize the amount of zooming necessary. Your best bet is to make the width and height the same as the lower resolution of the iPad, since you don't know which way it's oriented; in other words, you would make your page 768x768, so that it will fit well on the iPad's screen whether it's oriented to be 1024x768 or 768x1024.
More importantly, you'd want to design your page with big controls with lots of space that are easy to hit with your thumbs - you could easily design a 768x768 page that was very cluttered and therefore required lots of zooming. To accomplish this, you'll likely want to divide your controls among a number of web pages.
On the other hand, it's not the most worthwhile pursuit. If while designing you find opportunities to make your page more "finger-friendly", then go for it...but the reality is that iPad users are very comfortable with moving around and zooming in and out of the page to get to things because it's necessary on most web sites. If anything, you probably want to design it so that it's conducive to this type of navigation.
Make boxes with relevant grouped data that can be easily double-tapped to focus on, and keep related controls close to each other. iPad users will most likely appreciate a page that facilitates the familiar zoom-and-pan navigation they're accustomed to more than they will a page that has fewer controls so that they don't have to.
Or... You can also to try Your Own Task
JAVA CODE:
class CustomString extends Task{
private String type, string, before, after, returnValue;
public void execute() {
if (getType().equals("replace")) {
replace(getString(), getBefore(), getAfter());
}
}
private void replace(String str, String a, String b){
String results = str.replace(a, b);
Project project = getProject();
project.setProperty(getReturnValue(), results);
}
..all getter and setter..
ANT SCRIPT
...
<project name="ant-test" default="build">
<target name="build" depends="compile, run"/>
<target name="clean">
<delete dir="build" />
</target>
<target name="compile" depends="clean">
<mkdir dir="build/classes"/>
<javac srcdir="src" destdir="build/classes" includeantruntime="true"/>
</target>
<target name="declare" depends="compile">
<taskdef name="string" classname="CustomString" classpath="build/classes" />
</target>
<!-- Replacing characters in Ant property -->
<target name="run" depends="declare">
<property name="propA" value="This is a value"/>
<echo message="propA=${propA}" />
<string type="replace" string="${propA}" before=" " after="_" returnvalue="propB"/>
<echo message="propB=${propB}" />
</target>
CONSOLE:
run:
[echo] propA=This is a value
[echo] propB=This_is_a_value
Logs rotate for a reason, so that you only keep so many log files around. In log4j.xml you can add this to your node:
<param name="MaxBackupIndex" value="20"/>
The value tells log4j.xml to only keep 20 rotated log files around. You can limit this to 5 if you want or even 1. If your application isn't logging that much data, and you have 20 log files spanning the last 8 months, but you only need a weeks worth of logs, then I think you need to tweak your log4j.xml "MaxBackupIndex" and "MaxFileSize" params.
Alternatively, if you are using a properties file (instead of the xml) and wish to save 15 files (for example)
log4j.appender.[appenderName].MaxBackupIndex = 15
Vue watch()
life-cycle hook, can be used
html
<div id="demo">{{ fullName }}</div>
js
var vm = new Vue({
el: '#demo',
data: {
firstName: 'Foo',
lastName: 'Bar',
fullName: 'Foo Bar'
},
watch: {
firstName: function (val) {
this.fullName = val + ' ' + this.lastName
},
lastName: function (val) {
this.fullName = this.firstName + ' ' + val
}
}
})
Or as a single command:
git push -u origin master:my_test
Pushes the commits from your local master branch to a (possibly new) remote branch my_test
and sets up master
to track origin/my_test
.
WordPress asks for your FTP credentials when it can't access the files directly. This is usually caused by PHP running as the apache user (mod_php or CGI) rather than the user that owns your WordPress files.
This is rather normal in most shared hosting environments - the files are stored as the user, and Apache runs as user apache
or httpd
. This is actually a good security precaution so exploits and hacks cannot modify hosted files. You could circumvent this by setting all WP files to 777 security, but that means no security, so I would highly advise against that. Just use FTP, it's the automatically advised workaround with good reason.
Example: index = False
import pandas as pd
writer = pd.ExcelWriter("dataframe.xlsx", engine='xlsxwriter')
dataframe.to_excel(writer,sheet_name = dataframe, index=False)
writer.save()
If you mean a variable at the module level then you can use "globals":
if "var1" not in globals():
var1 = 4
but the common Python idiom is to initialize it to say None
(assuming that it's not an acceptable value) and then testing with if var1 is not None
.
Take a look at the Mockito API docs. As the linked document mentions (Point # 12) you can use any of the doThrow()
,doAnswer()
,doNothing()
,doReturn()
family of methods from Mockito framework to mock void methods.
For example,
Mockito.doThrow(new Exception()).when(instance).methodName();
or if you want to combine it with follow-up behavior,
Mockito.doThrow(new Exception()).doNothing().when(instance).methodName();
Presuming that you are looking at mocking the setter setState(String s)
in the class World below is the code uses doAnswer
method to mock the setState
.
World mockWorld = mock(World.class);
doAnswer(new Answer<Void>() {
public Void answer(InvocationOnMock invocation) {
Object[] args = invocation.getArguments();
System.out.println("called with arguments: " + Arrays.toString(args));
return null;
}
}).when(mockWorld).setState(anyString());
Then NumPy sum
function takes an optional axis argument that specifies along which axis you would like the sum performed:
>>> a = numpy.arange(12).reshape(4,3)
>>> a.sum(0)
array([18, 22, 26])
Or, equivalently:
>>> numpy.sum(a, 0)
array([18, 22, 26])
I think the exception safety part of mr mpark's answer is still a valid concern. when creating a shared_ptr like this: shared_ptr< T >(new T), the new T may succeed, while the shared_ptr's allocation of control block may fail. in this scenario, the newly allocated T will leak, since the shared_ptr has no way of knowing that it was created in-place and it is safe to delete it. or am I missing something? I don't think the stricter rules on function parameter evaluation help in any way here...
This will get you the most expensive car for the user:
SELECT users.userName, MAX(cars.carPrice)
FROM users
LEFT JOIN cars ON cars.belongsToUser=users.id
WHERE users.id=4
GROUP BY users.userName
However, this statement makes me think that you want all of the cars prices sorted, descending:
So question: How do I set the LEFT JOIN table to be ordered by carPrice, DESC ?
So you could try this:
SELECT users.userName, cars.carPrice
FROM users
LEFT JOIN cars ON cars.belongsToUser=users.id
WHERE users.id=4
GROUP BY users.userName
ORDER BY users.userName ASC, cars.carPrice DESC
That was a stroll down memory lane...
I replaced awk by perl a long time ago.
Apparently the AWK regular expression engine does not capture its groups.
you might consider using something like :
perl -n -e'/test(\d+)/ && print $1'
the -n flag causes perl to loop over every line like awk does.
<script type="text/javascript">
var i=0;
function increase()
{
i++;
return false;
}</script><input type="button" onclick="increase();">
In my case, I have to run some more steps to build it on RedHat or Centos.
# get system libraries
sudo yum install -y gcc wget
# get stable version and untar it
wget http://download.redis.io/redis-stable.tar.gz
tar xvzf redis-stable.tar.gz
cd redis-stable
# build dependencies too!
cd deps
make hiredis jemalloc linenoise lua geohash-int
cd ..
# compile it
make
# make it globally accesible
sudo cp src/redis-cli /usr/bin/
Turn off "Print Layout" from the "View" menu.
String array[]={"one","two"};
String s="";
for(int i=0;i<array.length;i++)
{
s=s+array[i];
}
System.out.print(s);
More accurately...
while IFS= read -r line ; do
printf "%s\n" "$line"
done < file
Several of the System.IO.Path methods will throw exceptions if the path or filename is invalid:
http://msdn.microsoft.com/en-us/library/system.io.path_methods.aspx
For this purpose you need to make the connection result set
ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE
Connection con=null;
//initialize connection variable to connect to your database...
Statement stmt = con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);
String query="Select MYCLOB from TABLE_NAME for update";
con.setAutoCommit(false);
ResultSet resultset=stmt.executeQuery(query);
if(resultset.next()){
oracle.sql.CLOB clobnew = ((OracleResultSet) rss).getCLOB("MYCLOB");
PrintWriter pw = new PrintWriter(clobnew.getCharacterOutputStream() );
BufferedReader br = new BufferedReader( new FileReader( new File("filename.xml") ) );
String lineIn = null;
while( ( lineIn = br.readLine() ) != null )
pw.println( lineIn );
pw.close();
br.close();
}
con.setAutoCommit(true);
con.commit();
}
Note: its important that you add the phrase for update at the end of the query that is written to select the row...
Follow the above code to insert the XML file
First off, that's not JSON. It's a JavaScript object literal. JSON is a string representation of data, that just so happens to very closely resemble JavaScript syntax.
Second, you have an object. They are unsorted. The order of the elements cannot be guaranteed. If you want guaranteed order, you need to use an array. This will require you to change your data structure.
One option might be to make your data look like this:
var json = [{
"name": "user1",
"id": 3
}, {
"name": "user2",
"id": 6
}, {
"name": "user3",
"id": 1
}];
Now you have an array of objects, and we can sort it.
json.sort(function(a, b){
return a.id - b.id;
});
The resulting array will look like:
[{
"name": "user3",
"id" : 1
}, {
"name": "user1",
"id" : 3
}, {
"name": "user2",
"id" : 6
}];
You can use this;
String.format("%1$s %2$s %2$s %3$s", "a", "b", "c");
Output:
a b b c
You can just put this all on one line:
LD_LIBRARY_PATH="$LD_LIBRARY_PATH:/path/to/library" ./sync_test
Should make things a little easier, even if it doesn't change anything fundamental
If your PC is secure or you don't care about password security, this can be achieved very simply. Assuming that the remote repository is on GitHub and origin
is your local name for the remote repository, use this command
git remote set-url --push origin https://<username>:<password>@github.com/<repo>
The --push
flag ensures this changes the URL of the repository for the git push
command only. (The question asked in the original post is about git push
command only. Requiring a username+password only for push operations is the normal setup for public repositories on GitHub . Note that private repositories on GitHub would also require a username+password for pull and fetch operations, so for a private repository you would not want to use the --push flag
...)
WARNING: This is inherently unsecure because:
your ISP, or anyone logging your network accesses, can easily see the password in plain text in the URL;
anyone who gains access to your PC can view your password using git remote show origin
.
That's why using an SSH key is the accepted answer.
Even an SSH key is not totally secure. Anyone who gains access to your PC can still, for example, make pushes which wreck your repository or - worse - push commits making subtle changes to your code. (All pushed commits are obviously highly visible on GitHub. But if someone wanted to change your code surreptitiously, they could --amend
a previous commit without changing the commit message, and then force push it. That would be stealthy and quite hard to notice in practice.)
But revealing your password is worse. If an attacker gains knowledge of your username+password, they can do things like lock you out of your own account, delete your account, permanently delete the repository, etc.
Alternatively - for simplicity and security - you can supply only your username in the URL, so that you will have to type your password every time you git push
but you will not have to give your username each time. (I quite like this approach, having to type the password gives me a pause to think each time I git push
, so I cannot git push
by accident.)
git remote set-url --push origin https://<username>@github.com/<repo>
Concatenation of a string and integer is simple: just use
abhishek+str(2)
No pseudo-element, no additional element. Only single div:
I used some CSS variables to control easily.
div {
--border-height: 2px;
--border-color: #000;
background: linear-gradient(var(--border-color),var(--border-color)) 0% 50%/ calc(50% - (var(--space) / 2)) var(--border-height),
linear-gradient(var(--border-color),var(--border-color)) 100% 50%/ calc(50% - (var(--space) / 2)) var(--border-height);
background-repeat:no-repeat;
text-align:center;
}
_x000D_
<div style="--space: 100px">Title</div>
<div style="--space: 50px;--border-color: red;--border-height:1px;">Title</div>
<div style="--space: 150px;--border-color: green;">Longer Text</div>
_x000D_
But the above method is not dynamic. You have to change the --space
variable according to the text length.
Per Jquery docs
The .val() method is primarily used to get the values of form elements such as input, select and textarea. When called on an empty collection, it returns undefined.
In order to retrieve the value store in the text box with id txtEmail, you can use
$("#txtEmail").val()
You can do it in one statement like this:
CachedObject.where(key: "the given key").first_or_create! do |cached|
cached.attribute1 = 'attribute value'
cached.attribute2 = 'attribute value'
end
Run this, and your errors will vanish
rm -rf Pods && gem install cocoapods && pod install
So many questions here. I see at least two, maybe three:
*args
being used for?The first question is trivially answered in the Python Standard Library reference:
pop(key[, default])
If key is in the dictionary, remove it and return its value, else return default. If default is not given and key is not in the dictionary, a KeyError is raised.
The second question is covered in the Python Language Reference:
If the form “*identifier” is present, it is initialized to a tuple receiving any excess positional parameters, defaulting to the empty tuple. If the form “**identifier” is present, it is initialized to a new dictionary receiving any excess keyword arguments, defaulting to a new empty dictionary.
In other words, the pop
function takes at least two arguments. The first two get assigned the names self
and key
; and the rest are stuffed into a tuple called args
.
What's happening on the next line when *args
is passed along in the call to self.data.pop
is the inverse of this - the tuple *args
is expanded to of positional parameters which get passed along. This is explained in the Python Language Reference:
If the syntax *expression appears in the function call, expression must evaluate to a sequence. Elements from this sequence are treated as if they were additional positional arguments
In short, a.pop()
wants to be flexible and accept any number of positional parameters, so that it can pass this unknown number of positional parameters on to self.data.pop()
.
This gives you flexibility; data
happens to be a dict
right now, and so self.data.pop()
takes either one or two parameters; but if you changed data
to be a type which took 19 parameters for a call to self.data.pop()
you wouldn't have to change class a
at all. You'd still have to change any code that called a.pop()
to pass the required 19 parameters though.
filenames = '000'.upto('100').map { |index| "file_#{index}" }
Outputs
[file_000, file_001, file_002, file_003, ..., file_098, file_099, file_100]
You will find the application folder at:
/data/data/"your package name"
you can access this folder using the DDMS for your Emulator. you can't access this location on a real device unless you have a rooted device.
solution is easy:
replace
mask = (50 < df['heart rate'] < 101 &
140 < df['systolic blood pressure'] < 160 &
90 < df['dyastolic blood pressure'] < 100 &
35 < df['temperature'] < 39 &
11 < df['respiratory rate'] < 19 &
95 < df['pulse oximetry'] < 100
, "excellent", "critical")
by
mask = ((50 < df['heart rate'] < 101) &
(140 < df['systolic blood pressure'] < 160) &
(90 < df['dyastolic blood pressure'] < 100) &
(35 < df['temperature'] < 39) &
(11 < df['respiratory rate'] < 19) &
(95 < df['pulse oximetry'] < 100)
, "excellent", "critical")
Maybe a fixed height
and overflow-y: scroll;
With C99 the %j
length modifier can also be used with the printf family of functions to print values of type int64_t
and uint64_t
:
#include <stdio.h>
#include <stdint.h>
int main(int argc, char *argv[])
{
int64_t a = 1LL << 63;
uint64_t b = 1ULL << 63;
printf("a=%jd (0x%jx)\n", a, a);
printf("b=%ju (0x%jx)\n", b, b);
return 0;
}
Compiling this code with gcc -Wall -pedantic -std=c99
produces no warnings, and the program prints the expected output:
a=-9223372036854775808 (0x8000000000000000)
b=9223372036854775808 (0x8000000000000000)
This is according to printf(3)
on my Linux system (the man page specifically says that j
is used to indicate a conversion to an intmax_t
or uintmax_t
; in my stdint.h, both int64_t
and intmax_t
are typedef'd in exactly the same way, and similarly for uint64_t
). I'm not sure if this is perfectly portable to other systems.
I suppose you're getting this JSON from a server or a file, and you want to create a JSONArray object out of it.
String strJSON = ""; // your string goes here
JSONArray jArray = (JSONArray) new JSONTokener(strJSON).nextValue();
// once you get the array, you may check items like
JSONOBject jObject = jArray.getJSONObject(0);
Hope this helps :)
There is no directive for ng-else
You can use ng-if to achieve if(){..} else{..} in angularJs.
For your current situation,
<div ng-if="data.id == 5">
<!-- If block -->
</div>
<div ng-if="data.id != 5">
<!-- Your Else Block -->
</div>
If you will place your definitions in this order then the code will be compiled
class Ball;
class Player {
public:
void doSomething(Ball& ball);
private:
};
class Ball {
public:
Player& PlayerB;
float ballPosX = 800;
private:
};
void Player::doSomething(Ball& ball) {
ball.ballPosX += 10; // incomplete type error occurs here.
}
int main()
{
}
The definition of function doSomething requires the complete definition of class Ball because it access its data member.
In your code example module Player.cpp has no access to the definition of class Ball so the compiler issues an error.
For Mac users, it is Code > Preference > Settings.
One Additional point:
When you are converting from tsql
to plsql
you have to worry about no_data_found
exception
DECLARE
v_var NUMBER;
BEGIN
SELECT clmn INTO v_var FROM tbl;
Exception when no_data_found then v_var := null; --what ever handle the exception.
END;
In tsql
if no data found
then the variable will be null
but no exception
You can do as follow :
import json
exDict = {1:1, 2:2, 3:3}
file.write(json.dumps(exDict))
https://developer.rhino3d.com/guides/rhinopython/python-xml-json/
Spring works in standalone application. You are using the wrong way to create a spring bean. The correct way to do it like this:
@Component
public class Main {
public static void main(String[] args) {
ApplicationContext context =
new ClassPathXmlApplicationContext("META-INF/config.xml");
Main p = context.getBean(Main.class);
p.start(args);
}
@Autowired
private MyBean myBean;
private void start(String[] args) {
System.out.println("my beans method: " + myBean.getStr());
}
}
@Service
public class MyBean {
public String getStr() {
return "string";
}
}
In the first case (the one in the question), you are creating the object by yourself, rather than getting it from the Spring context. So Spring does not get a chance to Autowire
the dependencies (which causes the NullPointerException
).
In the second case (the one in this answer), you get the bean from the Spring context and hence it is Spring managed and Spring takes care of autowiring
.
You can trigger a download with the HTML5 download
attribute.
<a href="path_to_file" download="proposed_file_name">Download</a>
Where:
path_to_file
is a path that resolves to an URL on the same origin. That means the page and the file must share the same domain, subdomain, protocol (HTTP vs. HTTPS), and port (if specified). Exceptions are blob:
and data:
(which always work), and file:
(which never works).proposed_file_name
is the filename to save to. If it is blank, the browser defaults to the file's name.Documentation: MDN, HTML Standard on downloading, HTML Standard on download
, CanIUse
As far as I know, by using only Docker this is not possible. You need some DNS to map container ip:s to hostnames.
If you want out of the box solution. One solution is to use for example Kontena. It comes with network overlay technology from Weave and this technology is used to create virtual private LAN networks for each service and every service can be reached by service_name.kontena.local-address
.
Here is simple example of Wordpress application's YAML file where Wordpress service connects to MySQL server with wordpress-mysql.kontena.local address:
wordpress:
image: wordpress:4.1
stateful: true
ports:
- 80:80
links:
- mysql:wordpress-mysql
environment:
- WORDPRESS_DB_HOST=wordpress-mysql.kontena.local
- WORDPRESS_DB_PASSWORD=secret
mysql:
image: mariadb:5.5
stateful: true
environment:
- MYSQL_ROOT_PASSWORD=secret
Use limitTo filter to display a limited number of results in ng-repeat.
<ul class="phones">
<li ng-repeat="phone in phones | limitTo:5">
{{phone.name}}
<p>{{phone.snippet}}</p>
</li>
</ul>
Using something like self-clearing div
is perfect for a situation like this. Then you'll just use a class on the parent... like:
<div id="parent" class="clearfix">
If you have names of the element and not id we can achieve the undefined check on all text elements (for example) as below and fill them with a default value say 0.0:
var aFieldsCannotBeNull=['ast_chkacc_bwr','ast_savacc_bwr'];
jQuery.each(aFieldsCannotBeNull,function(nShowIndex,sShowKey) {
var $_oField = jQuery("input[name='"+sShowKey+"']");
if($_oField.val().trim().length === 0){
$_oField.val('0.0')
}
})
<inf.h>
/* IEEE positive infinity. */
#if __GNUC_PREREQ(3,3)
# define INFINITY (__builtin_inff())
#else
# define INFINITY HUGE_VALF
#endif
and
<bits/nan.h>
#ifndef _MATH_H
# error "Never use <bits/nan.h> directly; include <math.h> instead."
#endif
/* IEEE Not A Number. */
#if __GNUC_PREREQ(3,3)
# define NAN (__builtin_nanf (""))
#elif defined __GNUC__
# define NAN \
(__extension__ \
((union { unsigned __l __attribute__ ((__mode__ (__SI__))); float __d; }) \
{ __l: 0x7fc00000UL }).__d)
#else
# include <endian.h>
# if __BYTE_ORDER == __BIG_ENDIAN
# define __nan_bytes { 0x7f, 0xc0, 0, 0 }
# endif
# if __BYTE_ORDER == __LITTLE_ENDIAN
# define __nan_bytes { 0, 0, 0xc0, 0x7f }
# endif
static union { unsigned char __c[4]; float __d; } __nan_union
__attribute_used__ = { __nan_bytes };
# define NAN (__nan_union.__d)
#endif /* GCC. */
If you are willing to use c++11
you can utilize user-defined string literals and define two function templates that overload the plus operator for a std::string
object and any other object. The only pitfall is not to overload the plus operators of std::string
, otherwise the compiler doesn't know which operator to use. You can do this by using the template std::enable_if
from type_traits
. After that strings behave just like in Java or C#. See my example implementation for details.
#include <iostream>
#include "c_sharp_strings.hpp"
using namespace std;
int main()
{
int i = 0;
float f = 0.4;
double d = 1.3e-2;
string s;
s += "Hello world, "_ + "nice to see you. "_ + i
+ " "_ + 47 + " "_ + f + ',' + d;
cout << s << endl;
return 0;
}
Include this header file in all all places where you want to have these strings.
#ifndef C_SHARP_STRING_H_INCLUDED
#define C_SHARP_STRING_H_INCLUDED
#include <type_traits>
#include <string>
inline std::string operator "" _(const char a[], long unsigned int i)
{
return std::string(a);
}
template<typename T> inline
typename std::enable_if<!std::is_same<std::string, T>::value &&
!std::is_same<char, T>::value &&
!std::is_same<const char*, T>::value, std::string>::type
operator+ (std::string s, T i)
{
return s + std::to_string(i);
}
template<typename T> inline
typename std::enable_if<!std::is_same<std::string, T>::value &&
!std::is_same<char, T>::value &&
!std::is_same<const char*, T>::value, std::string>::type
operator+ (T i, std::string s)
{
return std::to_string(i) + s;
}
#endif // C_SHARP_STRING_H_INCLUDED
If you are copy-pasting code into R, it sometimes won't accept some special characters such as "~" and will appear instead as a "?". So if a certain character is giving an error, make sure to use your keyboard to enter the character, or find another website to copy-paste from if that doesn't work.
I wrote this a long time ago (from years 1985-1992, with just a few tweaks since then), and just copy and paste the bits needed into each project.
You must call cfmakeraw
on a tty
obtained from tcgetattr
. You cannot zero-out a struct termios
, configure it, and then set the tty
with tcsetattr
. If you use the zero-out method, then you will experience unexplained intermittent failures, especially on the BSDs and OS X. "Unexplained intermittent failures" include hanging in read(3)
.
#include <errno.h>
#include <fcntl.h>
#include <string.h>
#include <termios.h>
#include <unistd.h>
int
set_interface_attribs (int fd, int speed, int parity)
{
struct termios tty;
if (tcgetattr (fd, &tty) != 0)
{
error_message ("error %d from tcgetattr", errno);
return -1;
}
cfsetospeed (&tty, speed);
cfsetispeed (&tty, speed);
tty.c_cflag = (tty.c_cflag & ~CSIZE) | CS8; // 8-bit chars
// disable IGNBRK for mismatched speed tests; otherwise receive break
// as \000 chars
tty.c_iflag &= ~IGNBRK; // disable break processing
tty.c_lflag = 0; // no signaling chars, no echo,
// no canonical processing
tty.c_oflag = 0; // no remapping, no delays
tty.c_cc[VMIN] = 0; // read doesn't block
tty.c_cc[VTIME] = 5; // 0.5 seconds read timeout
tty.c_iflag &= ~(IXON | IXOFF | IXANY); // shut off xon/xoff ctrl
tty.c_cflag |= (CLOCAL | CREAD);// ignore modem controls,
// enable reading
tty.c_cflag &= ~(PARENB | PARODD); // shut off parity
tty.c_cflag |= parity;
tty.c_cflag &= ~CSTOPB;
tty.c_cflag &= ~CRTSCTS;
if (tcsetattr (fd, TCSANOW, &tty) != 0)
{
error_message ("error %d from tcsetattr", errno);
return -1;
}
return 0;
}
void
set_blocking (int fd, int should_block)
{
struct termios tty;
memset (&tty, 0, sizeof tty);
if (tcgetattr (fd, &tty) != 0)
{
error_message ("error %d from tggetattr", errno);
return;
}
tty.c_cc[VMIN] = should_block ? 1 : 0;
tty.c_cc[VTIME] = 5; // 0.5 seconds read timeout
if (tcsetattr (fd, TCSANOW, &tty) != 0)
error_message ("error %d setting term attributes", errno);
}
...
char *portname = "/dev/ttyUSB1"
...
int fd = open (portname, O_RDWR | O_NOCTTY | O_SYNC);
if (fd < 0)
{
error_message ("error %d opening %s: %s", errno, portname, strerror (errno));
return;
}
set_interface_attribs (fd, B115200, 0); // set speed to 115,200 bps, 8n1 (no parity)
set_blocking (fd, 0); // set no blocking
write (fd, "hello!\n", 7); // send 7 character greeting
usleep ((7 + 25) * 100); // sleep enough to transmit the 7 plus
// receive 25: approx 100 uS per char transmit
char buf [100];
int n = read (fd, buf, sizeof buf); // read up to 100 characters if ready to read
The values for speed are B115200
, B230400
, B9600
, B19200
, B38400
, B57600
, B1200
, B2400
, B4800
, etc. The values for parity are 0
(meaning no parity), PARENB|PARODD
(enable parity and use odd), PARENB
(enable parity and use even), PARENB|PARODD|CMSPAR
(mark parity), and PARENB|CMSPAR
(space parity).
"Blocking" sets whether a read()
on the port waits for the specified number of characters to arrive. Setting no blocking means that a read()
returns however many characters are available without waiting for more, up to the buffer limit.
Addendum:
CMSPAR
is needed only for choosing mark and space parity, which is uncommon. For most applications, it can be omitted. My header file /usr/include/bits/termios.h
enables definition of CMSPAR
only if the preprocessor symbol __USE_MISC
is defined. That definition occurs (in features.h
) with
#if defined _BSD_SOURCE || defined _SVID_SOURCE
#define __USE_MISC 1
#endif
The introductory comments of <features.h>
says:
/* These are defined by the user (or the compiler)
to specify the desired environment:
...
_BSD_SOURCE ISO C, POSIX, and 4.3BSD things.
_SVID_SOURCE ISO C, POSIX, and SVID things.
...
*/
You will not be able to find out the password he chose. However, you may create a new user or set a new password to the existing user.
Usually, you can login as the postgres user:
Open a Terminal and do sudo su postgres
.
Now, after entering your admin password, you are able to launch psql
and do
CREATE USER yourname WITH SUPERUSER PASSWORD 'yourpassword';
This creates a new admin user. If you want to list the existing users, you could also do
\du
to list all users and then
ALTER USER yourusername WITH PASSWORD 'yournewpass';
Try this
$file = basename($_SERVER['PATH_INFO']);//Filename requested
_x000D_
You had thead
in your selector, but there is no thead
in your table. Also you had your selectors backwards. As you mentioned above, you wanted to be adding the tr
class to the th
, not vice-versa (although your comment seems to contradict what you wrote up above).
$('tr th').each(function(index){ if($('tr td').eq(index).attr('class') != ''){ // get the class of the td var tdClass = $('tr td').eq(index).attr('class'); // add it to this th $(this).addClass(tdClass ); } });
This is the code which can help u but dont forget to include message ui framewark and include delegates method MFMailComposeViewControllerDelegate
-(void)EmailButtonACtion{
if ([MFMailComposeViewController canSendMail])
{
MFMailComposeViewController *controller = [[MFMailComposeViewController alloc] init];
controller.mailComposeDelegate = self;
[controller.navigationBar setBackgroundImage:[UIImage imageNamed:@"navigation_bg_iPhone.png"] forBarMetrics:UIBarMetricsDefault];
controller.navigationBar.tintColor = [UIColor colorWithRed:51.0/255.0 green:51.0/255.0 blue:51.0/255.0 alpha:1.0];
[controller setSubject:@""];
[controller setMessageBody:@" " isHTML:YES];
[controller setToRecipients:[NSArray arrayWithObjects:@"",nil]];
UIPasteboard *pasteboard = [UIPasteboard generalPasteboard];
UIImage *ui = resultimg.image;
pasteboard.image = ui;
NSData *imageData = [NSData dataWithData:UIImagePNGRepresentation(ui)];
[controller addAttachmentData:imageData mimeType:@"image/png" fileName:@" "];
[self presentViewController:controller animated:YES completion:NULL];
}
else{
UIAlertView *alert=[[UIAlertView alloc] initWithTitle:@"alrt" message:nil delegate:self cancelButtonTitle:@"ok" otherButtonTitles: nil] ;
[alert show];
}
}
-(void)mailComposeController:(MFMailComposeViewController*)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError*)error
{
[MailAlert show];
switch (result)
{
case MFMailComposeResultCancelled:
MailAlert.message = @"Email Cancelled";
break;
case MFMailComposeResultSaved:
MailAlert.message = @"Email Saved";
break;
case MFMailComposeResultSent:
MailAlert.message = @"Email Sent";
break;
case MFMailComposeResultFailed:
MailAlert.message = @"Email Failed";
break;
default:
MailAlert.message = @"Email Not Sent";
break;
}
[self dismissViewControllerAnimated:YES completion:NULL];
[MailAlert show];
}
this datepicker is an excellent solution. datepickers are a must if you want to avoid code injection.
A similar approach to @Peter Coppins answer. This, I think, is a bit easier and doesn't require the use of the Orca utility:
Check the "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\14.0\Common\FilesPaths" registry key and make sure the value "mso.dll" is NOT present. If it is present, then Office 64-bit seems to be installed and you should not need this workaround.
Download the Microsoft Access Database Engine 2010 Redistributable.
From the command line, run: AccessDatabaseEngine_x64.exe /passive
(Note: this installer silently crashed or failed for me, so I unzipped the components and ran: AceRedist.msi /passive and that installed fine. Maybe a Windows 10 thing.)
Source: How to install 64-bit Microsoft Database Drivers alongside 32-bit Microsoft Office
No, you can unpublish but once your application has been live
on the market you cannot delete it. (Each package name is unique and Google remembers all package names anyway so you could use this a reminder)
The "Delete" button only works for unpublished version of your app. Once you published your app or a particular version of it, you cannot delete it from the Market. However, you can still "unpublish" it. The "Delete" button is only handy when you uploaded a new version, then you realized you goofed and want to remove that new version before publishing it.
Update, 2016
you can now filter out unpublished or draft apps from your listing.
Unpublish option can be found in the header area, beside PUBLISHED text.
UPDATE 2020
Due to changes in the new play console, the unpublish option was moved to a different location as follows.
Click All Apps
in the left pane. Then click the app you want to remove.
Then under the Setup
option in the left pane, Click Advanced Settings
.
Then under App Availablity
on the right, change the status to UnPublished
and click Save Changes
at the bottom.
Take a look at the image below:
First take a label. set its visibility to false, then on the DataGridView_CellClick event write this
private void dataGridView1_CellClick(object sender, DataGridViewCellEventArgs e)
{
label.Text=dataGridView1.Rows[e.RowIndex].Cells["Your Coloumn name"].Value.ToString();
// then perform your select statement according to that label.
}
//try it it might work for you
Use PUT for updating incomplete/partial resource.
You can accept jObject as parameter and parse its value to update the resource.
Below is the function which you can use as a reference :
public IHttpActionResult Put(int id, JObject partialObject)
{
Dictionary<string, string> dictionaryObject = new Dictionary<string, string>();
foreach (JProperty property in json.Properties())
{
dictionaryObject.Add(property.Name.ToString(), property.Value.ToString());
}
int id = Convert.ToInt32(dictionaryObject["id"]);
DateTime startTime = Convert.ToDateTime(orderInsert["AppointmentDateTime"]);
Boolean isGroup = Convert.ToBoolean(dictionaryObject["IsGroup"]);
//Call function to update resource
update(id, startTime, isGroup);
return Ok(appointmentModelList);
}
Practical = 'useful in practice' - so the best you're going to get is anecdotal. Everything else is just prototyping and testing results.
I agree with others - determining 'a max quantity of records' is completely dependent on schema - # tables, # fields, # indexes.
Another anecdote for you: I recently hit 1.6GB file size with 2 primary data stores (tables), of 36 and 85 fields respectively, with some subset copies in 3 additional tables.
Who cares if data is unique or not - only material if context says it is. Data is data is data, unless duplication affects handling by the indexer.
The total row counts making up that 1.6GB is 1.72M.
Raising an event when a property changes is precisely what INotifyPropertyChanged does. There's one required member to implement INotifyPropertyChanged and that is the PropertyChanged event. Anything you implemented yourself would probably be identical to that implementation, so there's no advantage to not using it.
Here is an optimized version of the above method RemoveInvalidXmlChars which doesn't create a new array on every call, thus stressing the GC unnecessarily:
public static string RemoveInvalidXmlChars(string text)
{
if (text == null)
return text;
if (text.Length == 0)
return text;
// a bit complicated, but avoids memory usage if not necessary
StringBuilder result = null;
for (int i = 0; i < text.Length; i++)
{
var ch = text[i];
if (XmlConvert.IsXmlChar(ch))
{
result?.Append(ch);
}
else if (result == null)
{
result = new StringBuilder();
result.Append(text.Substring(0, i));
}
}
if (result == null)
return text; // no invalid xml chars detected - return original text
else
return result.ToString();
}
Here's an example:
private static final HashMap<String, String> MAP = new HashMap<String, String>();
static {
MAP.put("banana", "honey");
MAP.put("peanut butter", "jelly");
MAP.put("rice", "beans");
}
The code in the "static" section(s) will be executed at class load time, before any instances of the class are constructed (and before any static methods are called from elsewhere). That way you can make sure that the class resources are all ready to use.
It's also possible to have non-static initializer blocks. Those act like extensions to the set of constructor methods defined for the class. They look just like static initializer blocks, except the keyword "static" is left off.
When you are working with JSON data in Android, you would use JSONArray
to parse JSON which starts with the array brackets. Arrays in JSON are used to organize a collection of related items (Which could be JSON objects).
For example: [{"name":"item 1"},{"name": "item2} ]
On the other hand, you would use JSONObject
when dealing with JSON that begins with curly braces. A JSON object is typically used to contain key/value pairs related to one item.
For example: {"name": "item1", "description":"a JSON object"}
Of course, JSON arrays and objects may be nested inside one another. One common example of this is an API which returns a JSON object containing some metadata alongside an array of the items matching your query:
{"startIndex": 0, "data": [{"name":"item 1"},{"name": "item2"} ]}
Yeah it's possible.
Button myBtn = (Button)findViewById(R.id.myButtonId);
myBtn.requestFocus();
or in XML
<Button ...><requestFocus /></Button>
Important Note: The button widget needs to be focusable
and focusableInTouchMode
. Most widgets are focusable
but not focusableInTouchMode
by default. So make sure to either set it in code
myBtn.setFocusableInTouchMode(true);
or in XML
android:focusableInTouchMode="true"
Where ever you use a <button>
element by default it considers that button type="submit"
so if you define the button type="button"
then it won't consider that <button>
as submit button.
I wrote following function to return a default representation 0 or false of a primitive or Number:
/**
* Retrieves the default value 0 / false for any primitive representative or
* {@link Number} type.
*
* @param type
*
* @return
*/
@SuppressWarnings("unchecked")
public static <T> T getDefault(final Class<T> type)
{
if (type.equals(Long.class) || type.equals(Long.TYPE))
return (T) new Long(0);
else if (type.equals(Integer.class) || type.equals(Integer.TYPE))
return (T) new Integer(0);
else if (type.equals(Double.class) || type.equals(Double.TYPE))
return (T) new Double(0);
else if (type.equals(Float.class) || type.equals(Float.TYPE))
return (T) new Float(0);
else if (type.equals(Short.class) || type.equals(Short.TYPE))
return (T) new Short((short) 0);
else if (type.equals(Byte.class) || type.equals(Byte.TYPE))
return (T) new Byte((byte) 0);
else if (type.equals(Character.class) || type.equals(Character.TYPE))
return (T) new Character((char) 0);
else if (type.equals(Boolean.class) || type.equals(Boolean.TYPE))
return (T) new Boolean(false);
else if (type.equals(BigDecimal.class))
return (T) BigDecimal.ZERO;
else if (type.equals(BigInteger.class))
return (T) BigInteger.ZERO;
else if (type.equals(AtomicInteger.class))
return (T) new AtomicInteger();
else if (type.equals(AtomicLong.class))
return (T) new AtomicLong();
else if (type.equals(DoubleAdder.class))
return (T) new DoubleAdder();
else
return null;
}
I use it in hibernate ORM projection queries when the underlying SQL query returns null instead of 0.
/**
* Retrieves the unique result or zero, <code>false</code> if it is
* <code>null</code> and represents a number
*
* @param criteria
*
* @return zero if result is <code>null</code>
*/
public static <T> T getUniqueResultDefault(final Class<T> type, final Criteria criteria)
{
final T result = (T) criteria.uniqueResult();
if (result != null)
return result;
else
return Utils.getDefault(type);
}
One of the many unnecessary complex things about Java making it unintuitive to use. Why instance variables are initialized with default 0 but local are not is not logical. Similar why enums dont have built in flag support and many more options. Java lambda is a nightmare compared to C# and not allowing class extension methods is also a big problem.
Java ecosystem comes up with excuses why its not possible but me as the user / developer i dont care about their excuses. I want easy approach and if they dont fix those things they will loose big in the future since C# and other languages are not waiting to make life of developers more simple. Its just sad to see the decline in the last 10 years since i work daily with Java.
We have a large .SLN files with many project files. I started the policy of having a "ViewLocal" directory where all non-sourcecontrolled files are located. Inside that directory is an 'Inter' and an 'Out' directory. For the intermediate files, and the output files, respectively.
This obviously makes it easy to just go to your 'viewlocal' directory and do a simple delete, to get rid of everything.
Before you spent time figuring out a way to work around this with scripts, you might think about setting up something similar.
I won't lie though, maintaining such a setup in a large organization has proved....interesting. Especially when you use technologies such as QT that like to process files and create non-sourcecontrolled source files. But that is a whole OTHER story!
This question is 12 years old but it still needs to be given a better answer. As few noted in the comments and contrarily to what all answers pretend it would certainly make sense to have static abstract methods in C#. As philosopher Daniel Dennett put it, a failure of imagination is not an insight into necessity. There is a common mistake in not realizing that C# is not only an OOP language. A pure OOP perspective on a given concept leads to a restricted and in the current case misguided examination. Polymorphism is not only about subtying polymorphism: it also includes parametric polymorphism (aka generic programming) and C# has been supporting this for a long time now. Within this additional paradigm, abstract classes (and most types) are not only used to type instances. They can also be used as bounds for generic parameters; something that has been understood by users of certain languages (like for example Haskell, but also more recently Scala, Rust or Swift) for years.
In this context you may want to do something like this:
void Catch<TAnimal>() where TAnimal : Animal
{
string scientificName = TAnimal.ScientificName; // abstract static property
Console.WriteLine($"Let's catch some {scientificName}");
…
}
And here the capacity to express static members that can be specialized by subclasses totally makes sense!
Unfortunately C# does not allow abstract static members but I'd like to propose a pattern that can emulate them reasonably well. This pattern is not perfect (it imposes some restrictions on inheritance) but as far as I can tell it is typesafe.
The main idea is to associate an abstract companion class (here SpeciesFor<TAnimal>
) to the one that should contain abstract members (here Animal
):
public abstract class SpeciesFor<TAnimal> where TAnimal : Animal
{
public static SpeciesFor<TAnimal> Instance { get { … } }
// abstract "static" members
public abstract string ScientificName { get; }
…
}
public abstract class Animal { … }
Now we would like to make this work:
void Catch<TAnimal>() where TAnimal : Animal
{
string scientificName = SpeciesFor<TAnimal>.Instance.ScientificName;
Console.WriteLine($"Let's catch some {scientificName}");
…
}
Of course we have two problems to solve:
Animal
to associate a specific instance of SpeciesFor<TAnimal>
to this subclass?SpeciesFor<TAnimal>.Instance
retrieve this information?Here is how we can solve 1:
public abstract class Animal<TSelf> where TSelf : Animal<TSelf>
{
private Animal(…) {}
public abstract class OfSpecies<TSpecies> : Animal<TSelf>
where TSpecies : SpeciesFor<TSelf>, new()
{
protected OfSpecies(…) : base(…) { }
}
…
}
By making the constructor of Animal<TSelf>
private we make sure that all its subclasses are also subclasses of inner class Animal<TSelf>.OfSpecies<TSpecies>
. So these subclasses must specify a TSpecies
type that has a new()
bound.
For 2 we can provide the following implementation:
public abstract class SpeciesFor<TAnimal> where TAnimal : Animal<TAnimal>
{
private static SpeciesFor<TAnimal> _instance;
public static SpeciesFor<TAnimal> Instance => _instance ??= MakeInstance();
private static SpeciesFor<TAnimal> MakeInstance()
{
Type t = typeof(TAnimal);
while (true)
{
if (t.IsConstructedGenericType
&& t.GetGenericTypeDefinition() == typeof(Animal<>.OfSpecies<>))
return (SpeciesFor<TAnimal>)Activator.CreateInstance(t.GenericTypeArguments[1]);
t = t.BaseType;
if (t == null)
throw new InvalidProgramException();
}
}
// abstract "static" members
public abstract string ScientificName { get; }
…
}
How can we be sure that the reflection code inside MakeInstance()
never throws? As we've already said, almost all classes within the hierarchy of Animal<TSelf>
are also subclasses of Animal<TSelf>.OfSpecies<TSpecies>
. So we know that for these classes a specific TSpecies
must be provided. This type is also necessarily constructible thanks to constraint : new()
. But this still leaves abstract types like Animal<Something>
that have no associated species. Now we can convince ourself that the curiously recurring template pattern where TAnimal : Animal<TAnimal>
makes it impossible to write SpeciesFor<Animal<Something>>.Instance
as type Animal<Something>
is never a subtype of Animal<Animal<Something>>
.
Et voilà:
public class CatSpecies : SpeciesFor<Cat>
{
// overriden "static" members
public override string ScientificName => "Felis catus";
public override Cat CreateInVivoFromDnaTrappedInAmber() { … }
public override Cat Clone(Cat a) { … }
public override Cat Breed(Cat a1, Cat a2) { … }
}
public class Cat : Animal<Cat>.OfSpecies<CatSpecies>
{
// overriden members
public override string CuteName { get { … } }
}
public class DogSpecies : SpeciesFor<Dog>
{
// overriden "static" members
public override string ScientificName => "Canis lupus familiaris";
public override Dog CreateInVivoFromDnaTrappedInAmber() { … }
public override Dog Clone(Dog a) { … }
public override Dog Breed(Dog a1, Dog a2) { … }
}
public class Dog : Animal<Dog>.OfSpecies<DogSpecies>
{
// overriden members
public override string CuteName { get { … } }
}
public class Program
{
public static void Main()
{
ConductCrazyScientificExperimentsWith<Cat>();
ConductCrazyScientificExperimentsWith<Dog>();
ConductCrazyScientificExperimentsWith<Tyranosaurus>();
ConductCrazyScientificExperimentsWith<Wyvern>();
}
public static void ConductCrazyScientificExperimentsWith<TAnimal>()
where TAnimal : Animal<TAnimal>
{
// Look Ma! No animal instance polymorphism!
TAnimal a2039 = SpeciesFor<TAnimal>.Instance.CreateInVivoFromDnaTrappedInAmber();
TAnimal a2988 = SpeciesFor<TAnimal>.Instance.CreateInVivoFromDnaTrappedInAmber();
TAnimal a0400 = SpeciesFor<TAnimal>.Instance.Clone(a2988);
TAnimal a9477 = SpeciesFor<TAnimal>.Instance.Breed(a0400, a2039);
TAnimal a9404 = SpeciesFor<TAnimal>.Instance.Breed(a2988, a9477);
Console.WriteLine(
"The confederation of mad scientists is happy to announce the birth " +
$"of {a9404.CuteName}, our new {SpeciesFor<TAnimal>.Instance.ScientificName}.");
}
}
A limitation of this pattern is that it is not possible (as far as I can tell) to extend the class hierarchy in a satifying manner. For example we cannot introduce an intermediary Mammal
class associated to a MammalClass
companion. Another is that it does not work for static members in interfaces which would be more flexible than abstract classes.
Why don't you want to remove the multiple
attribute? The entire purpose of that attribute is to specify to the browser that multiple values may be selected from the given select
element. If only a single value should be selected, remove the attribute and the browser will know to allow only a single selection.
Use the tools you have, that's what they're for.
edit: This does not answer the question the OP meant to ask, leaving it here in case people find it useful somehow.
We use the multiplication rule of probability, combined with infinitessimals. This results in 2 lines of code to achieve your desired result:
longitude: f = uniform([0,2pi))
azimuth: ? = -arcsin(1 - 2*uniform([0,1]))
(defined in the following coordinate system:)
Your language typically has a uniform random number primitive. For example in python you can use random.random()
to return a number in the range [0,1)
. You can multiply this number by k to get a random number in the range [0,k)
. Thus in python, uniform([0,2pi))
would mean random.random()*2*math.pi
.
Proof
Now we can't assign ? uniformly, otherwise we'd get clumping at the poles. We wish to assign probabilities proportional to the surface area of the spherical wedge (the ? in this diagram is actually f):
An angular displacement df at the equator will result in a displacement of df*r. What will that displacement be at an arbitrary azimuth ?? Well, the radius from the z-axis is r*sin(?)
, so the arclength of that "latitude" intersecting the wedge is df * r*sin(?)
. Thus we calculate the cumulative distribution of the area to sample from it, by integrating the area of the slice from the south pole to the north pole.
(where stuff=df*r
)
We will now attempt to get the inverse of the CDF to sample from it: http://en.wikipedia.org/wiki/Inverse_transform_sampling
First we normalize by dividing our almost-CDF by its maximum value. This has the side-effect of cancelling out the df and r.
azimuthalCDF: cumProb = (sin(?)+1)/2 from -pi/2 to pi/2
inverseCDF: ? = -sin^(-1)(1 - 2*cumProb)
Thus:
let x by a random float in range [0,1]
? = -arcsin(1-2*x)
The problem is that bootstrap removes the backdrop asynchronously. So when you call hide
and show
quickly after each other, the backdrop isn't removed.
The solution (as you've mentioned) is to wait for the modal to have been hidden completely, using the 'hidden.bs.modal'
event. Use jQuery one to only perform the callback once. I've forked your jsfiddle to show how this would work.
// wait for the backdrop to be removed nicely.
loadingModal.one('hidden.bs.modal', function()
{
loadingModal.modal("show");
//Again simulate 3 seconds
setTimeout(function () {
loadingModal.modal("hide");
}, 3000);
});
// hide for the first time, after binding to the hidden event.
loadingModal.modal("hide");
Looking through the code in Bootstrap:
This is what makes hiding the modal asynchronous:
$.support.transition && this.$element.hasClass('fade') ?
this.$element
.one('bsTransitionEnd', $.proxy(this.hideModal, this))
.emulateTransitionEnd(Modal.TRANSITION_DURATION) :
this.hideModal()
This checks whether transitions are supported and the fade
class is included on the modal. When both are true
, it waits for the fade effect to complete, before hiding the modal. This waiting happens again before removing the backdrop.
This is why removing the fade class will make hiding the modal synchronous (no more waiting for CSS fade effect to complete) and why the solution by reznic works.
This check determines whether to add or remove the backdrop. isShown = true
is performed synchronously. When you call hide
and show
quickly after each other, isShown
becomes true
and the check adds a backdrop, instead of removing the previous one, creating the problem you're having.
ok, here is my final solution with 100% native javascript:
<meta id="viewport" name="viewport">
<script type="text/javascript">
//mobile viewport hack
(function(){
function apply_viewport(){
if( /Android|webOS|iPhone|iPad|iPod|BlackBerry/i.test(navigator.userAgent) ) {
var ww = window.screen.width;
var mw = 800; // min width of site
var ratio = ww / mw; //calculate ratio
var viewport_meta_tag = document.getElementById('viewport');
if( ww < mw){ //smaller than minimum size
viewport_meta_tag.setAttribute('content', 'initial-scale=' + ratio + ', maximum-scale=' + ratio + ', minimum-scale=' + ratio + ', user-scalable=no, width=' + mw);
}
else { //regular size
viewport_meta_tag.setAttribute('content', 'initial-scale=1.0, maximum-scale=1, minimum-scale=1.0, user-scalable=yes, width=' + ww);
}
}
}
//ok, i need to update viewport scale if screen dimentions changed
window.addEventListener('resize', function(){
apply_viewport();
});
apply_viewport();
}());
</script>
To remove all the constraints from the DB:
SELECT 'ALTER TABLE ' + Table_Name +' DROP CONSTRAINT ' + Constraint_Name
FROM Information_Schema.CONSTRAINT_TABLE_USAGE
Open the sql file in your text editor;
1. Search: utf8mb4_unicode_ci Replace: utf8_general_ci (Replace All)
2. Search: utf8mb4_unicode_520_ci Replace: utf8_general_ci (Replace All)
3. Search: utf8mb4 Replace: utf8 (Replace All)
Save and upload!
I'm really looking forward to solve this problem. So I modified email validation regular expression above
Original
/^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/
Modified
/^(([^<>()\[\]\.,;:\s@\"]+(\.[^<>()\[\]\.,;:\s@\"]+)*)|(\".+\"))@(([^<>()\.,;\s@\"]+\.{0,1})+[^<>()\.,;:\s@\"]{2,})$/
to pass the examples in Wikipedia Email Address.
And you can see the result in here.
by default you would need to use the postgres user:
sudo -u postgres psql postgres
This solution is for Litespeed Server (Apache as well)
Add the following code in .htaccess
RewriteRule .* - [E=noabort:1]
RewriteRule .* - [E=noconntimeout:1]
To solve this error, it is enough to add from google.colab import files
in your code!
Use the same function (cor
) on a data frame, e.g.:
> cor(VADeaths)
Rural Male Rural Female Urban Male Urban Female
Rural Male 1.0000000 0.9979869 0.9841907 0.9934646
Rural Female 0.9979869 1.0000000 0.9739053 0.9867310
Urban Male 0.9841907 0.9739053 1.0000000 0.9918262
Urban Female 0.9934646 0.9867310 0.9918262 1.0000000
Or, on a data frame also holding discrete variables, (also sometimes referred to as factors), try something like the following:
> cor(mtcars[,unlist(lapply(mtcars, is.numeric))])
mpg cyl disp hp drat wt qsec vs am gear carb
mpg 1.0000000 -0.8521620 -0.8475514 -0.7761684 0.68117191 -0.8676594 0.41868403 0.6640389 0.59983243 0.4802848 -0.55092507
cyl -0.8521620 1.0000000 0.9020329 0.8324475 -0.69993811 0.7824958 -0.59124207 -0.8108118 -0.52260705 -0.4926866 0.52698829
disp -0.8475514 0.9020329 1.0000000 0.7909486 -0.71021393 0.8879799 -0.43369788 -0.7104159 -0.59122704 -0.5555692 0.39497686
hp -0.7761684 0.8324475 0.7909486 1.0000000 -0.44875912 0.6587479 -0.70822339 -0.7230967 -0.24320426 -0.1257043 0.74981247
drat 0.6811719 -0.6999381 -0.7102139 -0.4487591 1.00000000 -0.7124406 0.09120476 0.4402785 0.71271113 0.6996101 -0.09078980
wt -0.8676594 0.7824958 0.8879799 0.6587479 -0.71244065 1.0000000 -0.17471588 -0.5549157 -0.69249526 -0.5832870 0.42760594
qsec 0.4186840 -0.5912421 -0.4336979 -0.7082234 0.09120476 -0.1747159 1.00000000 0.7445354 -0.22986086 -0.2126822 -0.65624923
vs 0.6640389 -0.8108118 -0.7104159 -0.7230967 0.44027846 -0.5549157 0.74453544 1.0000000 0.16834512 0.2060233 -0.56960714
am 0.5998324 -0.5226070 -0.5912270 -0.2432043 0.71271113 -0.6924953 -0.22986086 0.1683451 1.00000000 0.7940588 0.05753435
gear 0.4802848 -0.4926866 -0.5555692 -0.1257043 0.69961013 -0.5832870 -0.21268223 0.2060233 0.79405876 1.0000000 0.27407284
carb -0.5509251 0.5269883 0.3949769 0.7498125 -0.09078980 0.4276059 -0.65624923 -0.5696071 0.05753435 0.2740728 1.00000000
Since phone numbers must conform to a pattern, you can use regular expressions to match the entered phone number against the pattern you define in regexp.
php has both ereg and preg_match() functions. I'd suggest using preg_match() as there's more documentation for this style of regex.
An example
$phone = '000-0000-0000';
if(preg_match("/^[0-9]{3}-[0-9]{4}-[0-9]{4}$/", $phone)) {
// $phone is valid
}
In my case I console.log(this.$route)
and returned the fullPath:
console.js:
fullPath: "/solicitud/MX/666",
params: {market: "MX", id: "666"},
path: "/solicitud/MX/666"
console.js: /solicitud/MX/666
Whenever possible, you should avoid parsing the output of ls
(see Greg's wiki on the subject). Basically, the output of ls
will be ambiguous if there are funny characters in any of the filenames. It's also usually a waste of time. In this case, when you execute ls -d */
, what happens is that the shell expands */
to a list of subdirectories (which is already exactly what you want), passes that list as arguments to ls -d
, which looks at each one, says "yep, that's a directory all right" and prints it (in an inconsistent and sometimes ambiguous format). The ls
command isn't doing anything useful!
Well, ok, it is doing one thing that's useful: if there are no subdirectories, */
will get left as is, ls
will look for a subdirectory named "*", not find it, print an error message that it doesn't exist (to stderr), and not print the "*/" (to stdout).
The cleaner way to make an array of subdirectory names is to use the glob (*/
) without passing it to ls
. But in order to avoid putting "*/" in the array if there are no actual subdirectories, you should set nullglob first (again, see Greg's wiki):
shopt -s nullglob
array=(*/)
shopt -u nullglob # Turn off nullglob to make sure it doesn't interfere with anything later
echo "${array[@]}" # Note double-quotes to avoid extra parsing of funny characters in filenames
If you want to print an error message if there are no subdirectories, you're better off doing it yourself:
if (( ${#array[@]} == 0 )); then
echo "No subdirectories found" >&2
fi
A slightly more practical/efficient plugin based on Ivan Castellanos' answer (which was based on M4N's answer). Using || 0
will convert Nan to 0 without the testing step.
I've also provided float and int variations to suit the intended use:
jQuery.fn.cssInt = function (prop) {
return parseInt(this.css(prop), 10) || 0;
};
jQuery.fn.cssFloat = function (prop) {
return parseFloat(this.css(prop)) || 0;
};
$('#elem').cssInt('top'); // e.g. returns 123 as an int
$('#elem').cssFloat('top'); // e.g. Returns 123.45 as a float
You can use mt_rand()
$random = $ran[mt_rand(0, count($ran) - 1)];
This comes in handy as a function as well if you need the value
function random_value($array, $default=null)
{
$k = mt_rand(0, count($array) - 1);
return isset($array[$k])? $array[$k]: $default;
}
You could try something like this:
select *
from jobdetails
where job_no like '071[12]%'
Not exactly what you're asking, but it has the same effect, and is flexible in other ways too :)
There are padding built into various classes.
For example:
A asp.net web forms app:
<asp:CheckBox ID="chkShowDeletedServers" runat="server" AutoPostBack="True" Text="Show Deleted" />
this code above would place the Text of "Show Deleted" too close to the checkbox to what I see at nice to look at.
However with bootstrap
<div class="checkbox-inline">
<asp:CheckBox ID="chkShowDeletedServers" runat="server" AutoPostBack="True" Text="Show Deleted" />
</div>
This created the space, if you don't want the text bold, that class=checkbox
Bootstrap is very flexible, so in this case I don't need a hack, but sometimes you need to.
No, Java doesn't have that ability.
It does have System.nanoTime(), but that just gives an offset from some previously known time. So whilst you can't take the absolute number from this, you can use it to measure nanosecond (or higher) precision.
Note that the JavaDoc says that whilst this provides nanosecond precision, that doesn't mean nanosecond accuracy. So take some suitably large modulus of the return value.
As for the testing, you should use from Spring 4.1 which will overwrite the properties defined in other places:
@TestPropertySource("classpath:application-test.properties")
Test property sources have higher precedence than those loaded from the operating system's environment or Java system properties as well as property sources added by the application like @PropertySource
One alternative is to change up your module. Generally if you are exporting an object with a bunch of functions on it, it's easier to export a bunch of named functions, e.g.
export function foo() { console.log('foo') },
export function bar() { console.log('bar') },
export function baz() { foo(); bar() }
In this case you are export all of the functions with names, so you could do
import * as fns from './foo';
to get an object with properties for each function instead of the import you'd use for your first example:
import fns from './foo';
You can write as you show in example, but than you get build-error.
For fix this:
<Rule '/<userId>/<username>' (HEAD, POST, OPTIONS, GET) -> user.show_0>
and
<Rule '/<userId>' (HEAD, POST, OPTIONS, GET) -> .show_1>
{{ url_for('.show_0', args) }}
and {{ url_for('.show_1', args) }}
An ES6 update... though both filter and map might need customization.
Object.entries(theObj)
returns a [[key, value],] array representation of an object that can be worked on using Javascript's array methods, .each(), .any(), .forEach(), .filter(), .map(), .reduce(), etc.
Saves a ton of work on iterating over parts of an object Object.keys(theObj)
, or Object.values()
separately.
const buttons = {_x000D_
button1: {_x000D_
text: 'Close',_x000D_
onclick: function(){_x000D_
_x000D_
}_x000D_
},_x000D_
button2: {_x000D_
text: 'OK',_x000D_
onclick: function(){_x000D_
_x000D_
}_x000D_
},_x000D_
button3: {_x000D_
text: 'Cancel',_x000D_
onclick: function(){_x000D_
_x000D_
}_x000D_
}_x000D_
}_x000D_
_x000D_
list = Object.entries(buttons)_x000D_
.filter(([key, value]) => `${key}`[value] !== 'undefined' ) //has options_x000D_
.map(([key, value], idx) => `{${idx} {${key}: ${value}}}`)_x000D_
_x000D_
console.log(list)
_x000D_
Kindly ensure, the other columns are not constrained to accept Not null
values, hence while creating columns in table just ignore "Not Null" syntax. eg
Create Table Table_Name(
col1 DataType,
col2 DataType);
You can then insert multiple row values in any of the columns you want to. For instance:
Insert Into TableName(columnname)
values
(x),
(y),
(z);
and so on…
Hope this helps.
Try with following:
public DataTable fillDataTable(string table)
{
string query = "SELECT * FROM dstut.dbo." +table;
SqlConnection sqlConn = new SqlConnection(conSTR);
sqlConn.Open();
SqlCommand cmd = new SqlCommand(query, sqlConn);
SqlDataAdapter da=new SqlDataAdapter(cmd);
DataTable dt = new DataTable();
da.Fill(dt);
sqlConn.Close();
return dt;
}
Hope it is helpful.
You can filter by multiple columns (more than two) by using the np.logical_and
operator to replace &
(or np.logical_or
to replace |
)
Here's an example function that does the job, if you provide target values for multiple fields. You can adapt it for different types of filtering and whatnot:
def filter_df(df, filter_values):
"""Filter df by matching targets for multiple columns.
Args:
df (pd.DataFrame): dataframe
filter_values (None or dict): Dictionary of the form:
`{<field>: <target_values_list>}`
used to filter columns data.
"""
import numpy as np
if filter_values is None or not filter_values:
return df
return df[
np.logical_and.reduce([
df[column].isin(target_values)
for column, target_values in filter_values.items()
])
]
Usage:
df = pd.DataFrame({'a': [1, 2, 3, 4], 'b': [1, 2, 3, 4]})
filter_df(df, {
'a': [1, 2, 3],
'b': [1, 2, 4]
})
The docs explicitly says that java.sql.Date
will throw:
IllegalArgumentException
- if the date given is not in the JDBC date escape format (yyyy-[m]m-[d]d
)
Also you shouldn't need to convert a date to a String
then to a sql.date
, this seems superfluous (and bug-prone!). Instead you could:
java.sql.Date sqlDate := new java.sql.Date(now.getTime());
prs.setDate(2, sqlDate);
prs.setDate(3, sqlDate);
For minikube on Docker:
Option 1: Using minikube registry
docker ps
You will see something like: 127.0.0.1:32769->5000/tcp
It means that your minikube registry is on 32769 port for external usage, but internally it's on 5000 port.
Build your docker image tagging it:
docker build -t 127.0.0.1:32769/hello .
Push the image to the minikube registry:
docker push 127.0.0.1:32769/hello
Check if it's there:
curl http://localhost:32769/v2/_catalog
Build some deployment using the internal port:
kubectl create deployment hello --image=127.0.0.1:5000/hello
Your image is right now in minikube container, to see it write:
eval $(minikube -p <PROFILE> docker-env)
docker images
caveat: if using only one profile named "minikube" then "-p " section is redundant, but if using more then don't forget about it; Personally I delete the standard one (minikube) not to make mistakes.
Option 2: Not using registry
eval $(minikube -p <PROFILE> docker-env)
docker build -t hello .
kubectl create deployment hello --image=hello
At the end change the deployment ImagePullPolicy from Always to IfNotPresent:
kubectl edit deployment hello
I assume you called a function with an argument which was defined without taking any.
def f()
puts "hello world"
end
f(1) # <= wrong number of arguments (1 for 0)
cbindX from the package gdata combines multiple columns of differing column and row lengths. Check out the page here:
http://hosho.ees.hokudai.ac.jp/~kubo/Rdoc/library/gdata/html/cbindX.html
It takes multiple comma separated matrices and data.frames as input :) You just need to
install.packages("gdata", dependencies=TRUE)
and then
library(gdata)
concat_data <- cbindX(df1, df2, df3) # or cbindX(matrix1, matrix2, matrix3, matrix4)
Just iterate over the transposed of your array:
for column in array.T:
some_function(column)
Instead of use set_userdata you should use set_flashdata.
According to CI user guide:
CodeIgniter supports "flashdata", or session data that will only be available for the next server request, and are then automatically cleared. These can be very useful, and are typically used for informational or status messages (for example: "record 2 deleted").
http://ellislab.com/codeigniter/user-guide/libraries/sessions.html
data: { activitiesArray: activities },
That's it! Now you can access it in PHP:
<?php $myArray = $_REQUEST['activitiesArray']; ?>
Thank you @dfsq for the very helpful code!
I've made some adjustments and maybe some others like them too. I ensured that you can search for multiple words, without having a strict match.
Example rows:
You could search for 'ap pe' and it would recognise the first row
You could search for 'banana apple' and it would recognise the second row
Demo: http://jsfiddle.net/JeroenSormani/xhpkfwgd/1/
var $rows = $('#table tr');
$('#search').keyup(function() {
var val = $.trim($(this).val()).replace(/ +/g, ' ').toLowerCase().split(' ');
$rows.hide().filter(function() {
var text = $(this).text().replace(/\s+/g, ' ').toLowerCase();
var matchesSearch = true;
$(val).each(function(index, value) {
matchesSearch = (!matchesSearch) ? false : ~text.indexOf(value);
});
return matchesSearch;
}).show();
});
Escape the apostrophe (i.e. double-up the single quote character) in your SQL:
INSERT INTO Person
(First, Last)
VALUES
('Joe', 'O''Brien')
/\
right here
The same applies to SELECT queries:
SELECT First, Last FROM Person WHERE Last = 'O''Brien'
The apostrophe, or single quote, is a special character in SQL that specifies the beginning and end of string data. This means that to use it as part of your literal string data you need to escape
the special character. With a single quote this is typically accomplished by doubling your quote. (Two single quote characters, not double-quote instead of a single quote.)
Note: You should only ever worry about this issue when you manually edit data via a raw SQL interface since writing queries outside of development and testing should be a rare occurrence. In code there are techniques and frameworks (depending on your stack) that take care of escaping special characters, SQL injection, etc.
let pattern = /^(?=.*[0-9])(?=.*[!@#$%^&*])(?=.*[a-z])(?=.*[A-Z])[a-zA-Z0-9!@#$%^&*]{6,16}$/;
//following will give you the result as true(if the password contains Capital, small letter, number and special character) or false based on the string format
let reee =pattern .test("helLo123@"); //true as it contains all the above
I also needed build-essential installed:
sudo apt-get install build-essential
A simple way to get the ids of the checked check boxes by class name:
$(".yourClassName:checkbox:checked").each(function() {
console.log($(this).attr("id"));
});
According to DOM level 4 specs, which is the current version in development, there are some new handy mutation methods available: append()
, prepend()
, before()
, after()
, replace()
, and remove()
.
https://catalin.red/removing-an-element-with-plain-javascript-remove-method/
The corrected code is
import urllib.request
fhand = urllib.request.urlopen('http://data.pr4e.org/romeo.txt')
counts = dict()
for line in fhand:
words = line.decode().split()
for word in words:
counts[word] = counts.get(word, 0) + 1
print(counts)
running the code above produces
{'Who': 1, 'is': 1, 'already': 1, 'sick': 1, 'and': 1, 'pale': 1, 'with': 1, 'grief': 1}
Try using the InStr function which returns the index in the string at which the character was found. If InStr returns 0, the string was not found.
If InStr(myString, "A") > 0 Then
For the error on the line assigning to newStr, convert oldStr.IndexOf to that InStr function also.
Left(oldStr, InStr(oldStr, "A"))
I get the same question as you you can click here :
About the question in xcode5 "no matching provisioning profiles found"
(About xcode5 ?no matching provisioning profiles found )
When I was fitting with iOS7,I get the warning like this:no matching provisioning profiles found. the reason may be that your project is in other group.
Do like this:find the file named *.xcodeproj in your protect,show the content of it.
You will see three files:
open the first, search the uuid and delete the row.
Like Jason S's answer:
ServicePointManager.ServerCertificateValidationCallback = delegate { return true; };
I put this in my Main and look to my app.config
and test if (ConfigurationManager.AppSettings["IgnoreSSLCertificates"] == "True")
before calling that line of code.
Per HTML syntax, and even HTML5, the following are all valid options:
<option value=""asd">test</option>
<option value=""asd">test</option>
<option value='"asd'>test</option>
<option value='"asd'>test</option>
<option value='"asd'>test</option>
<option value="asd>test</option>
<option value="asd>test</option>
Note that if you are using XML syntax the quotes (single or double) are required.
It would involve the cURL PHP extension.
$ch = curl_init('http://www.provider.com/process.jsp');
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, "id=12345&name=John");
curl_setopt($ch, CURLOPT_RETURNTRANSFER , 1); // RETURN THE CONTENTS OF THE CALL
$resp = curl_exec($ch);
Another solution:
select * from traintable
where (train, time) in (select train, max(time) from traintable group by train);
Use NSBox, which is a subclass of NSView, allowing us to easily style
Swift 3
let box = NSBox()
box.boxType = .custom
box.fillColor = NSColor.red
box.cornerRadius = 5
Just use "justify-content-center" in the row's class attribute.
<div class="container">
<div class="row justify-content-center">
<h1>This is a header</h1>
</div>
</div>
I don't know any Windows specific function. You could try getting the MD5 hash of the file every second/minute/hour (depends on how fast you need it) and compare it to the last hash. When it differs you know the file has been changed and you read out the newest lines.
var assoc_pagine = new Array();
assoc_pagine["home"]=0;
Don't use an Array
for this. Arrays are for numerically-indexed lists. Just use a plain Object
({}
).
What you are thinking of with the 'undefined'
string is probably this:
if (typeof assoc_pagine[key]!=='undefined')
This is (more or less) the same as saying
if (assoc_pagine[key]!==undefined)
However, either way this is a bit ugly. You're dereferencing a key that may not exist (which would be an error in any more sensible language), and relying on JavaScript's weird hack of giving you the special undefined
value for non-existent properties.
This also doesn't quite tell you if the property really wasn't there, or if it was there but explicitly set to the undefined
value.
This is a more explicit, readable and IMO all-round better approach:
if (key in assoc_pagine)
use mod_rewrite to redirect the call to file.html to image.png without the url changing for the user
Have you tried just renaming the image.png file to file.html? I think most browser take mime header over file extension :)
My problem, it showed an error called "The class Form1 can be designed, but is not the first class in the file. Visual Studio requires that designers use the first class in the file. Move the class code so that it is the first class in the file and try loading the designer again. ". So I moved the Form class to the first one and it worked. :)
Error 0x8007000d means URL rewriting module (referenced in web.config) is missing or proper version is not installed.
Just install URL rewriting module via web platform installer.
I recommend to check all dependencies from web.config and install them.
Depends if you consider the command palette a short-cut. I do.
CSS Grid layout
Like tables, grid layout enables an author to align elements into columns and rows.
https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Grid_Layout
To change the column sizes, take a look at the grid-template-columns
property.
dl {_x000D_
display: grid;_x000D_
grid-template-columns: max-content auto;_x000D_
}_x000D_
_x000D_
dt {_x000D_
grid-column-start: 1;_x000D_
}_x000D_
_x000D_
dd {_x000D_
grid-column-start: 2;_x000D_
}
_x000D_
<dl>_x000D_
<dt>Mercury</dt>_x000D_
<dd>Mercury (0.4 AU from the Sun) is the closest planet to the Sun and the smallest planet.</dd>_x000D_
<dt>Venus</dt>_x000D_
<dd>Venus (0.7 AU) is close in size to Earth, (0.815 Earth masses) and like Earth, has a thick silicate mantle around an iron core.</dd>_x000D_
<dt>Earth</dt>_x000D_
<dd>Earth (1 AU) is the largest and densest of the inner planets, the only one known to have current geological activity.</dd>_x000D_
</dl>
_x000D_
You need to set a layout manager for the JFrame to use - This deals with how components are positioned. A useful one is the BorderLayout manager.
Simply adding the following line of code should fix your problems:
mainFrame.setLayout(new BorderLayout());
(Do this before adding components to the JFrame)
var array = new Array(); // or the shortcut: = []
array.push ( {"cool":"34.33","also cool":"45454"} );
array.push ( {"cool":"34.39","also cool":"45459"} );
Your variable is a javascript object {}
not an array []
.
You could do:
var o = {}; // or the longer form: = new Object()
o.SomeNewProperty = "something";
o["SomeNewProperty"] = "something";
and
var o = { SomeNewProperty: "something" };
var o2 = { "SomeNewProperty": "something" };
Later, you add those objects to your array: array.push (o, o2);
Also JSON
is simply a string representation of a javascript object, thus:
var json = '{"cool":"34.33","alsocool":"45454"}'; // is JSON
var o = JSON.parse(json); // is a javascript object
json = JSON.stringify(o); // is JSON again
You need to do it like this,
void Yourfunction(List<DateTime> dates )
{
}
The PostgreSQL manual indicates that this means the transaction is open (inside BEGIN) and idle. It's most likely a user connected using the monitor who is thinking or typing. I have plenty of those on my system, too.
If you're using Slony for replication, however, the Slony-I FAQ suggests idle in transaction
may mean that the network connection was terminated abruptly. Check out the discussion in that FAQ for more details.
I need to do this trick, maybe because I use a custom HTML element. If I do not do this,
target
in onItemAmounterClick
won't have the scrollIntoView
method
.html
<div *ngFor"...">
<my-component #target (click)="clicked(target)"></my-component>
</div>
.ts
onItemAmounterClick(target){
target.__ngContext__[0].scrollIntoView({behavior: 'smooth'});
}
Would suggest NOT using INSERT IGNORE as it ignores ALL errors (ie its a sloppy global ignore).
Instead, since in your example tag
is the unique key, use:
INSERT INTO table_tags (tag) VALUES ('tag_a'),('tab_b'),('tag_c') ON DUPLICATE KEY UPDATE tag=tag;
on duplicate key produces:
Query OK, 0 rows affected (0.07 sec)
var str = "Hello m|sss sss|mmm ss"
//Now i separate them by "|"
var str1 = str.split('|');
//Now i want to get the first word of every split-ed sting parts:
for (var i=0;i<str1.length;i++)
{
//What to do here to get the first word :)
var firstWord = str1[i].split(' ')[0];
alert(firstWord);
}
You can also use template matching to detect shapes inside an image.
Code snippet for both recursive and non-recursive approaches:
//helper method to get the list of files from the HDFS path
public static List<String>
listFilesFromHDFSPath(Configuration hadoopConfiguration,
String hdfsPath,
boolean recursive) throws IOException,
IllegalArgumentException
{
//resulting list of files
List<String> filePaths = new ArrayList<String>();
//get path from string and then the filesystem
Path path = new Path(hdfsPath); //throws IllegalArgumentException
FileSystem fs = path.getFileSystem(hadoopConfiguration);
//if recursive approach is requested
if(recursive)
{
//(heap issues with recursive approach) => using a queue
Queue<Path> fileQueue = new LinkedList<Path>();
//add the obtained path to the queue
fileQueue.add(path);
//while the fileQueue is not empty
while (!fileQueue.isEmpty())
{
//get the file path from queue
Path filePath = fileQueue.remove();
//filePath refers to a file
if (fs.isFile(filePath))
{
filePaths.add(filePath.toString());
}
else //else filePath refers to a directory
{
//list paths in the directory and add to the queue
FileStatus[] fileStatuses = fs.listStatus(filePath);
for (FileStatus fileStatus : fileStatuses)
{
fileQueue.add(fileStatus.getPath());
} // for
} // else
} // while
} // if
else //non-recursive approach => no heap overhead
{
//if the given hdfsPath is actually directory
if(fs.isDirectory(path))
{
FileStatus[] fileStatuses = fs.listStatus(path);
//loop all file statuses
for(FileStatus fileStatus : fileStatuses)
{
//if the given status is a file, then update the resulting list
if(fileStatus.isFile())
filePaths.add(fileStatus.getPath().toString());
} // for
} // if
else //it is a file then
{
//return the one and only file path to the resulting list
filePaths.add(path.toString());
} // else
} // else
//close filesystem; no more operations
fs.close();
//return the resulting list
return filePaths;
} // listFilesFromHDFSPath
This has been driving me crazy for literally weeks. I found a solution that will work for me that includes:
...but there are a couple of caveats:
The vertical scrollbar is not visible until you scroll all the way to the right. Given that most people have scroll wheels, this was an acceptable sacrifice.
The width of the scrollbar must be known. On my website I set the scrollbar widths (I'm not overly concerned with older, incompatible browsers), so I can then calculate div
and table
widths that adjust based on the scrollbar.
Instead of posting my code here, I'll post a link to the jsFiddle.
vector::clear()
does not free memory allocated by the vector to store objects; it calls destructors for the objects it holds.
For example, if the vector uses an array as a backing store and currently contains 10 elements, then calling clear()
will call the destructor of each object in the array, but the backing array will not be deallocated, so there is still sizeof(T) * 10
bytes allocated to the vector (at least). size()
will be 0, but size()
returns the number of elements in the vector, not necessarily the size of the backing store.
As for your second question, anything you allocate with new
you must deallocate with delete
. You typically do not maintain a pointer to a vector for this reason. There is rarely (if ever) a good reason to do this and you prevent the vector from being cleaned up when it leaves scope. However, calling clear()
will still act the same way regardless of how it was allocated.
when you render
a request tou coctext
some information:
for exampel:
return render(request, 'path to template',{'username' :username , 'email'.email})
you can acces to it on template like this :
for variabels :
{% if username %}{{ username }}{% endif %}
for array :
{% if username %}{{ username.1 }}{% endif %}
{% if username %}{{ username.2 }}{% endif %}
you can also name array objects in views.py
and ten use it like:
{% if username %}{{ username.first }}{% endif %}
if there is other problem i wish to help you
The problem is that '_' underscores are not valid in header attribute. If removing the underscore is not an option you can add to the server block:
underscores_in_headers on;
This is basically a copy and paste from @kishorer747 comment on @Fleshgrinder answer, and solution is from: https://serverfault.com/questions/586970/nginx-is-not-forwarding-a-header-value-when-using-proxy-pass/586997#586997
I added it here as in my case the application behind nginx was working perfectly fine, but as soon ngix was between my flask app and the client, my flask app would not see the headers any longer. It was kind of time consuming to debug.
Better way is to use Queue class: http://docs.python.org/library/queue.html
Look at the good example code in the bottom of documentation page:
def worker():
while True:
item = q.get()
do_work(item)
q.task_done()
q = Queue()
for i in range(num_worker_threads):
t = Thread(target=worker)
t.daemon = True
t.start()
for item in source():
q.put(item)
q.join() # block until all tasks are done
Consider using CtrlP plug-in.
It is included in Janus Distributive.
Allows you to find files in the current directory, open buffers or most recently used files using "fuzzy matching" or regular expression.
There's a few ways to do this depending on how you want to hold the value.
You can use basic string formatting, e.g
'Your Meal Price is %.2f' % mealPrice
You can modify the 2
to whatever precision you need.
However, since you're dealing with money you should look into the decimal module which has a cool method named quantize
which is exactly for working with monetary applications. You can use it like so:
from decimal import Decimal, ROUND_DOWN
mealPrice = Decimal(str(mealPrice)).quantize(Decimal('.01'), rounding=ROUND_DOWN)
Note that the rounding
attribute is purely optional as well.
If you'd like to add text at the end of each line in-place (in the same file), you can use -i
parameter, for example:
sed -i'.bak' 's/$/:80/' foo.txt
However -i
option is non-standard Unix extension and may not be available on all operating systems.
So you can consider using ex
(which is equivalent to vi -e
/vim -e
):
ex +"%s/$/:80/g" -cwq foo.txt
which will add :80
to each line, but sometimes it can append it to blank lines.
So better method is to check if the line actually contain any number, and then append it, for example:
ex +"g/[0-9]/s/$/:80/g" -cwq foo.txt
If the file has more complex format, consider using proper regex, instead of [0-9]
.
Seems odd to be inserting a value into an automatically incrementing field.
Also, have you tried the insert() method instead of execSQL?
ContentValues insertValues = new ContentValues();
insertValues.put("Description", "Electricity");
insertValues.put("Amount", 500);
insertValues.put("Trans", 1);
insertValues.put("EntryDate", "04/06/2011");
db.insert("CashData", null, insertValues);
The only way I am able to make it work is by:
docker run -it -e USER=$USER -v /etc/passwd:/etc/passwd -v `pwd`:/siem mono bash
su - magnus
So I have to both specify $USER environment variable as well a point the /etc/passwd file. In this way, I can compile in /siem folder and retain ownership of files there not as root.
var arr = new Array();
$('li').each(function() {
arr.push(this.innerHTML);
})
[
and subset are not substitutable:
[
does return a vector if only one column is selected.
df = data.frame(a="a",b="b")
identical(
df[,c("a")],
subset(df,select="a")
)
identical(
df[,c("a","b")],
subset(df,select=c("a","b"))
)
I had to do a :
git checkout -b master
as git said that it doesn't exists, because it's been wipe with the
git -D master
Just to extend on the previous answer, if you are linking two requests together and want to send the cookies returned from the first one to the second one (for example, maintaining a session alive across requests) you can do:
import requests
r1 = requests.post('http://www.yourapp.com/login')
r2 = requests.post('http://www.yourapp.com/somepage',cookies=r1.cookies)
There is no updated
dynamic table. There is just inserted
and deleted
. On an UPDATE
command, the old data is stored in the deleted
dynamic table, and the new values are stored in the inserted
dynamic table.
Think of an UPDATE
as a DELETE/INSERT
combination.
There is no need of adding JAR to your project by yourself, just add dependency in build.gradle (Module lavel). ALSO always try to use the upgraded version, as of now is
dependencies {
implementation 'com.google.code.gson:gson:2.8.5'
}
As every incremental version has some bugs fixes or up-gradations as mentioned here
First Option:
OPEN package.json and add "--port port-no" in "serve" section.
Just like below, I have done it.
{
"name": "app-name",
"version": "0.1.0",
"private": true,
"scripts": {
"serve": "vue-cli-service serve --port 8090",
"build": "vue-cli-service build",
"lint": "vue-cli-service lint"
}
Second Option: If You want through command prompt
npm run serve --port 8090