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How do I disable the 'Debug / Close Application' dialog on Windows Vista?
When an application crashes on Windows and a debugger such as Visual Studio is installed the following modal dialog appears:
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How do I find where an exception was thrown in C++?
...t exception somewhere. All I get is a report of an exception being thrown, and no information as to where it was thrown. It seems illogical for a program compiled to contain debug symbols not to notify me of where in my code an exception was generated.
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What was the strangest coding standard rule that you were forced to follow? [closed]
...this question I got almost always a definite yes you should have coding standards.
112 Answers
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How does a garbage collector avoid an infinite loop here?
...kes dramatically under 40 seconds per object. That a new object is created and then eligible for finalization is not relevant to the current finalizer.
– Jacob Krall
Jul 10 '14 at 16:09
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Why is 128==128 false but 127==127 is true when comparing Integer wrappers in Java?
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When you compile a number literal in Java and assign it to a Integer (capital I) the compiler emits:
Integer b2 =Integer.valueOf(127)
This line of code is also generated when you use autoboxing.
valueOf is implemented such that certain numbers are "pooled", and i...
How to create and handle composite primary key in JPA
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You can make an Embedded class, which contains your two keys, and then have a reference to that class as EmbeddedId in your Entity.
You would need the @EmbeddedId and @Embeddable annotations.
@Entity
public class YourEntity {
@EmbeddedId
private MyKey myKey;
@Column(name ...
Check time difference in Javascript
...diff = date2 - date1;
// 28800000 milliseconds (8 hours)
You can then convert milliseconds to hour, minute and seconds like this:
var msec = diff;
var hh = Math.floor(msec / 1000 / 60 / 60);
msec -= hh * 1000 * 60 * 60;
var mm = Math.floor(msec / 1000 / 60);
msec -= mm * 1000 * 60;
var ss = Ma...
App Inventor 2 里那十几个传感器，被问最多的9个问题一次说清 - App应用开...
App Inventor 2 里那十几个传感器，被问最多的9个问题一次说清在 App Inventor 2 中文网的社区和文档留言区，"传感器"这个分类是提问频率最高的板块之一。原因不难理解：加速度计、陀螺仪、计步器、气压计、光线、NFC……...
What is the difference between print and puts?
...ust be opened for writing. Each given object that isn't a
string will be converted by calling its to_s method. When
called without arguments, prints the contents of $_.
If the output field separator ($,) is not nil, it
is inserted between objects. If the output record separator
($\) is ...
insert a NOT NULL column to an existing table
...Null-able column, then update your table column with valid not null values and finally ALTER column to set NOT NULL constraint:
ALTER TABLE MY_TABLE ADD STAGE INT NULL
GO
UPDATE MY_TABLE SET <a valid not null values for your column>
GO
ALTER TABLE MY_TABLE ALTER COLUMN STAGE INT NOT NULL
GO
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