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How can I make a JPA OneToOne relation lazy
...
private Date createdOn;
@Column(name = "created_by")
private String createdBy;
@OneToOne(fetch = FetchType.LAZY)
@MapsId
private Post post;
public PostDetails() {}
public PostDetails(String createdBy) {
createdOn = new Date();
this.createdBy = cre...
What does “Memory allocated at compile time” really mean?
...our code will increase the bin's size in a linear fashion.
If the 1k is a string, of a thousand chars, which is declared like so
const char *c_string = "Here goes a thousand chars...999";//implicit \0 at end
and you then were to vim your_compiled_bin, you'd actually be able to see that string in...
#1071 - Specified key was too long; max key length is 1000 bytes
...e best practice is to use prefix indexes so you're only indexing a left substring of the data. Most of your data will be a lot shorter than 255 characters anyway.
You can declare a prefix length per column as you define the index. For example:
...
KEY `index` (`parent_menu_id`,`menu_link`(50),`p...
Is it possible to decrypt MD5 hashes?
...culation again (any time, on any computer, anywhere), using the exact same string, it will come up with the same value. And yet, there is no way to find out what the original value was, since there are an infinite number of numbers that have that exact remainder, when divided by n.
That said, MD5 h...
Binding an enum to a WinForms combo box, and then setting it
...item
Status status;
Enum.TryParse<Status>(cbStatus.SelectedValue.ToString(), out status);
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Read properties file outside JAR file
... * the ./main.properties file of the base folder
*
* @return app.version string
* @throws IOException
*/
import java.util.Properties;
public static String getAppVersion() throws IOException{
String versionString = null;
//to load application's properties, we use this class
Proper...
Why does comparing strings using either '==' or 'is' sometimes produce a different result?
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@AlexanderSupertramp, because of string interning.
– Chris Rico
Feb 1 '15 at 9:34
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Calculate last day of month in JavaScript
...entral Standard Time)
Output differences are due to differences in the toString() implementation, not because the dates are different.
Of course, just because the browsers identified above use 0 as the last day of the previous month does not mean they will continue to do so, or that browsers not ...
Why are nested weights bad for performance? Alternatives?
...ground="#ffff8800"
android:gravity="center"
android:text="@string/fifty_fifty_text"
android:textColor="@android:color/white"
app:layout_constraintHeight_default="percent"
app:layout_constraintHeight_percent="0.5"
android:textSize="25sp"
app:lay...
What is Full Text Search vs LIKE
... word
ranking—measuring the
similarity of a matching record to
the query string
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