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How do I print the type of a variable in Rust?
... This is intended for diagnostic use. The exact contents and format of the string are not specified, other than being a best-effort description of the type.
If you want your type representation to stay the same between compiler versions, you should use a trait, like in the phicr's answer.
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Programmatically change input type of the EditText from PASSWORD to NORMAL & vice versa
...
public void onClick(View view) {
if(buttons.get(2).getText().toString().equalsIgnoreCase(getResources().getString(R.string.show))){
editTexts.get(1).setInputType(InputType.TYPE_CLASS_TEXT);
editTexts.get(1).setSelection(editTexts.get(1).getText().length());
...
Jump to function definition in vim
...ns in the background and analyses your whole project in real time exposing extra capabilities to your editor (any editor, not only vim). You get things like:
namespace aware tag completion
jump to definition
jump to next / previous error
find all references to an object
find all interface implemen...
Efficiently updating database using SQLAlchemy ORM
... the fields manually:
from sqlalchemy import Column, ForeignKey, Integer, String, Date, DateTime, text, create_engine
from sqlalchemy.exc import IntegrityError
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker
from sqlalchemy.orm.attributes import Instr...
Why is the use of tuples in C++ not more common?
... especially if those, too are namespace scoped. Take boost::tuple<std::string,std::set<std::string>,std::vector<My::Scoped::LongishTypeName> > as a ridiculous example.
– Ogre Psalm33
Jun 14 '11 at 20:06
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Skip certain tables with mysqldump
...
EXCLUDED_TABLES=(
table1
table2
table3
table4
tableN
)
IGNORED_TABLES_STRING=''
for TABLE in "${EXCLUDED_TABLES[@]}"
do :
IGNORED_TABLES_STRING+=" --ignore-table=${DATABASE}.${TABLE}"
done
echo "Dump structure"
mysqldump --host=${HOST} --user=${USER} --password=${PASSWORD} --single-transact...
MD5 algorithm in Objective-C
...
md5 is available on the iPhone and can be added as an addition for ie NSString and NSData like below.
MyAdditions.h
@interface NSString (MyAdditions)
- (NSString *)md5;
@end
@interface NSData (MyAdditions)
- (NSString*)md5;
@end
MyAdditions.m
#import "MyAdditions.h"
#import <CommonCrypto...
Why can't I call read() twice on an open file?
...I call it the second time, it doesn't seem to return the file content as a string?
7 Answers
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How to JSON serialize sets?
...
JSON notation has only a handful of native datatypes (objects, arrays, strings, numbers, booleans, and null), so anything serialized in JSON needs to be expressed as one of these types.
As shown in the json module docs, this conversion can be done automatically by a JSONEncoder and JSONDecoder,...
PostgreSQL function for last inserted ID
...s some TRIGGER (or RULE) that, on insertion into persons table, makes some extra insertions in other tables... then LASTVAL will probably give us the wrong value. The problem can even happen with CURRVAL, if the extra insertions are done intto the same persons table (this is much less usual, but the...