大约有 30,000 项符合查询结果（耗时：0.0495秒） [XML]
Control cannot fall through from one case label
...
switch (searchType)
{
case "SearchBooks":
Selenium.Type("//*[@id='SearchBooks_TextInput']", searchText);
Selenium.Click("//*[@id='SearchBooks_SearchBtn']");
break;
case "SearchAuthors":
Selenium.Type("//*[@id='SearchAuthors_TextInput']", searchText);
...
How to pass parameters to the DbContext.Database.ExecuteSqlCommand method?
Let's just suppose I have a valid need for directly executing a sql command in Entity Framework. I am having trouble figuring out how to use parameters in my sql statement. The following example (not my real example) doesn't work.
...
Restful way for deleting a bunch of items
...:
From:
http://example.com/resources/
do a
POST with a selection of the ID's to:
http://example.com/resources/selections
which, if successful, should respond with:
HTTP/1.1 201 created, and a Location header to:
http://example.com/resources/selections/DF4XY7
On this page you will then see a (j...
Surrogate vs. natural/business keys [closed]
...
If you have multiple "candidate" keys (fields or same-size collections of fields that are NOT NULL UNIQUE) then you are likely in violation of Boyce-Codd Normal Form. BCNF is beyond 3NF, so not many people worry about it. There are situations, howev...
Is there a quicker / better way to clear the iPhone Simulator cache than deleting its directory?
...
In the iOS Simulator menu, there is an option called Reset Content and Settings...
This should do the trick.
EDIT:
To make this much quicker and easier, I added a shortcut key like this...
In System Preferences, choose Keyboard
Then choose the Shortcuts tab.
And c...
Can I set enum start value in Java?
...re like classes - and they can even have multiple attributes.
public enum Ids {
OPEN(100), CLOSE(200);
private final int id;
Ids(int id) { this.id = id; }
public int getValue() { return id; }
}
The big difference is that they are type-safe which means you don't have to worry abou...
How do I increase the number of displayed lines of a Java stack trace dump?
...ich was not omitted (the line above ... X more). If you know which methods call the method in that line you can directly search for the callers in the frames of the enclosing exception:
HighLevelException: MidLevelException: LowLevelException
at Junk.c(Junk.java:29)
at Junk.b(Junk.java:21)
...
How to create a temporary directory?
...ed on the EXIT signal. That guarantees that the cleanup function is always called, even if the script aborts somewhere.
#!/bin/bash
# the directory of the script
DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
# the temp directory used, within $DIR
# omit the -p parameter to c...
DateTime vs DateTimeOffset
...s calendar, and there are many different calendars all over the globe. We call these calendars time zones. Calendar time is represented by a DateTime where .Kind is DateTimeKind.Unspecified, or DateTimeKind.Local. And .Local is only meaningful in scenarios where you have an implied understanding ...
How to include “zero” / “0” results in COUNT aggregate?
... (and you need to use person as the "driving" table)
SELECT person.person_id, COUNT(appointment.person_id) AS "number_of_appointments"
FROM person
LEFT JOIN appointment ON person.person_id = appointment.person_id
GROUP BY person.person_id;
The reason why this is working, is that the outer (lef...