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Java: Integer equals vs. ==
...s small integers.
If the value p being boxed is true, false, a byte, a char in the range \u0000 to \u007f, or an int or short number between -128 and 127, then let r1 and r2 be the results of any two boxing conversions of p. It is always the case that r1 == r2.
Resources :
JLS - Boxing
O...
Trusting all certificates using HttpClient over HTTPS
...ersion(params, HttpVersion.HTTP_1_1);
HttpProtocolParams.setContentCharset(params, HTTP.UTF_8);
SchemeRegistry registry = new SchemeRegistry();
registry.register(new Scheme("http", PlainSocketFactory.getSocketFactory(), 80));
registry.register(new Scheme("https", sf,...
Remove characters from NSString?
... This ONLY works if the 'spaces' are well behaved ASCII value=32 (%20) characters. To remove ALL possible white-space chars use Jim Dovey's solution below.
– Linasses
Apr 28 at 11:23
...
Getting the SQL from a Django QuerySet [duplicate]
...t;> queryset = MyModel.objects.all()
>>> print(queryset.query)
SELECT "myapp_mymodel"."id", ... FROM "myapp_mymodel"
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Declaration/definition of variables locations in ObjectiveC?
...#import "Cow.h"
#import <Foundation/Foundation.h>
int main(int argc, char *argv[]) {
@autoreleasepool {
Cow *cow = [Cow new];
[cow performSelector:@selector(blindAccess)];
}
}
This prints
iMadeVisible
iMadeVisible2
iMadeVisible3
Note that I was able to access the...
When should null values of Boolean be used?
..."boolean", not "boolean" (mind styling), because in Oracle you usually use char(1) null with 'T' and 'F' values. So it may (with e.g., Hibernate type adapter) be null :)
– Grzegorz Grzybek
Jun 25 '12 at 7:58
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Git Symlinks in Windows
... which finds all of the symlinks throughout the repository, as before) for selectively transforming git symlinks into NTFS hardlinks+junctions.
The checkout-symlinks alias has also been updated to accept multiple arguments (or none at all, == everything) for selective reversal of the aforementioned ...
What is the difference between UTF-8 and Unicode?
...r wants to use. Also, when a text editor program reads a file, it needs to select a text encoding scheme to decode it correctly. Same goes when you are typing and entering a letter, the text editor needs to know what scheme you use so that it will save it correctly.
– Cheng
...
How can I drop all the tables in a PostgreSQL database?
...
You can write a query to generate a SQL script like this:
select 'drop table "' || tablename || '" cascade;' from pg_tables;
Or:
select 'drop table if exists "' || tablename || '" cascade;' from pg_tables;
In case some tables are automatically dropped due to cascade option in a...
What is the difference between precision and scale?
...on. e.g: Precision 4, scale 2 - will fail any number > 99.9999..; try: select cast (99.99999 as NUMBER(4,2)) from dual; //OK; select cast (100.9 as NUMBER(4,2)) from dual; //FAIL;
– Jama Djafarov
Mar 6 '15 at 17:47
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