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How can you determine how much disk space a particular MySQL table is taking up?
...length) tablesize
FROM information_schema.tables
WHERE table_schema='mydb' and table_name='mytable';
KILOBYTES
SELECT (data_length+index_length)/power(1024,1) tablesize_kb
FROM information_schema.tables
WHERE table_schema='mydb' and table_name='mytable';
MEGABYTES
SELECT (data_length+index_len...
What version of javac built my jar?
... version of the Java compiler was used to build a jar? I have a jar file, and it could have been built in any one of three JDKs. We need to know exactly which one, so we can certify compatibility. Is the compiler version embedded somewhere in the class files or jar?
...
How do I get the calling method name and type using reflection? [duplicate]
I'd like to write a method which obtains the name of the calling method, and the name of the class containing the calling method.
...
Shrink a YouTube video to responsive width
I have a YouTube video embedded on our website and when I shrink the screen to tablet or phone sizes it stops shrinking at around 560px in width. Is this standard for YouTube videos or is there something that I can add to the code to make it go smaller?
...
Is there a way to include commas in CSV columns without breaking the formatting?
I've got a two column CSV with a name and a number. Some people's name use commas, for example Joe Blow, CFA. This comma breaks the CSV format, since it's interpreted as a new column.
...
What is the difference between CascadeType.REMOVE and orphanRemoval in JPA?
...s address;
:
}
Orphan Removal
JPA 2 supports an additional and more aggressive remove cascading mode
which can be specified using the orphanRemoval element of the
@OneToOne and @OneToMany annotations:
@Entity
class Employee {
:
@OneToOne(orphanRemoval=true)
private ...
Timer & TimerTask versus Thread + sleep in Java
...k is that it expresses your intention much better (i.e. code readability), and it already has the cancel() feature implemented.
Note that it can be written in a shorter form as well as your own example:
Timer uploadCheckerTimer = new Timer(true);
uploadCheckerTimer.scheduleAtFixedRate(
new Tim...
How to filter logcat in Android Studio?
...ng only the output containing the keyword(s). Is there a way to do that in Android Studio through the UI?
10 Answers
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How to select all instances of a variable and edit variable name in Sublime
...dn't work? Try again, making sure to start with nothing selected.
More commands:
Find All: Ctrl⌘G selects all occurences at once. Not on a Mac? AltF3
Undo Selection: ⌘U steps backwards. Not on a Mac? CtrlU
Quick Skip Next: ⌘K⌘D skips the next occurence. Not on a Mac? CtrlKCtrlD
Sublime Docs...
When is it better to use String.Format vs string concatenation?
...the performance hit, but to be honest it'll be minimal if present at all - and this concatenation version doesn't need to parse the format string.
Format strings are great for purposes of localisation etc, but in a case like this concatenation is simpler and works just as well.
With C# 6
String i...