大约有 15,000 项符合查询结果（耗时：0.0221秒） [XML]
How can I create a unique constraint on my column (SQL Server 2008 R2)?
...the "General" tab.
Make sure you have the column you want to make unique selected in the "columns" box.
Change the "Type" box to "Unique Key".
Click "Close".
You see a little asterisk in the file window, this means changes are not yet saved.
Press Save or hit Ctrl+s. It should save, and your colu...
How should I edit an Entity Framework connection string?
...nnection strings. Now go to the edmx, right click on the designer surface, select Update model from database, choose the connection string from the dropdown, Click next, Add or Refresh (select what you want) and finish.
In the output window it will show something like this,
Generated model file: U...
Discard all and get clean copy of latest revision?
...ndlines for all of my tools, so I tend to do it using the UI:
1. First, select "commit"
2. Then, display ignored files. If you have uncommitted changes, hide them.
3. Now, select all of them and click "Delete Unversioned".
Done. It's a procedure that is far easier to remember than comman...
How to map a composite key with JPA and Hibernate?
... way you write queries (making them more or less verbose):
with IdClass
select t.levelStation from Time t
with EmbeddedId
select t.timePK.levelStation from Time t
References
JPA 1.0 specification
Section 2.1.4 "Primary Keys and Entity Identity"
Section 9.1.14 "EmbeddedId Annotation"
Sect...
Specify custom Date format for colClasses argument in read.table/read.csv
...
You can write your own function that accepts a string and converts it to a Date using the format you want, then use the setAs to set it as an as method. Then you can use your function as part of the colClasses.
Try:
setAs("character","myDate", function(from) as.Date(from, format=...
Find the min/max element of an Array in JavaScript
...e to debug. A jquery array works fine on everything but the iPad. I had to convert the array to a true native array for it to work. Only affected the single device for some reason Math.max.apply(null, $.makeArray(array));
– Forrest
Jul 25 '12 at 21:17
...
Pass parameter to fabric task
...sub-process to run the scripts, or you will get an error. You will need to convert the variables back to int/boolean types separately.
def print_this(var):
print str(var)
fab print_this:'hello world'
fab print_this='hello'
fab print_this:'99'
fab print_this='True'
...
Pandas: Looking up the list of sheets in an excel file
...sed only zipfile which is an in-built module and xmltodict which I used to convert the XML into an easily iterable dictionary. Although you can look at @divingTobi's answer below where you can read the same file without actually extracting the files within.
– Dhwanil shah
...
How to 'minify' Javascript code
...alert(condition?'yes':'no')
//if the condition is true alert yes else no
Convert a number to a string or viceversa
var a=10;
var b=a.toString();
var c=parseFloat(b)
//same as
var a=10,b,c;
b=a+'';
c=b*1
//shorter
var a=10;
a+='';//String
a*=1;//Number
Round a number
var a=10.3899845
var b=Mat...
from jquery $.ajax to angular $http
...ore concise (especially using .post() method)
AngularJS will take care of converting JS objects into JSON string and setting headers (those are customizable)
Callback functions are named success and error respectively (also please note parameters of each callback) - Deprecated in angular v1.5
use t...