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Printing all global variables/local variables?
... @cpuer: Not necessarily. It only displays the name in the symbol table. For instance, with gcc on Mac a static variable y is renamed to y.1913 on compilation.
– kennytm
Jun 7 '11 at 7:14
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NSLog the method name with Objective-C in iPhone
...t because the Objective-C runtime is dynamic, it's actually using a lookup table to figure out which method on which class to call so a char* is convenient since methods are represented as strings in the lookup table.
– Jack Lawrence
Nov 7 '12 at 16:42
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Most popular screen sizes/resolutions on Android phones [closed]
...
You can see the resolutions for those categories in the Table 2, in this section: http://developer.android.com/guide/practices/screens_support.html#testing
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MYSQL OR vs IN performance
...s the same.
$t = microtime(true);
for($i=0; $i<10000; $i++):
$q = DB::table('users')->where('id',1)
->orWhere('id',2)
->orWhere('id',3)
->orWhere('id',4)
->orWhere('id',5)
->orWhere('id',6)
->orWhere('id',7)
->orWhere('id',8)
->orWhere(...
How to draw a circle with text in the middle?
...can make border-radius:50%; that makes your code event more elegant and portable, without having to change this attribute each time based on the width and height ;)
– bonCodigo
Aug 14 '14 at 10:37
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How to execute raw SQL in Flask-SQLAlchemy app
...e their own execute method:
result = db.session.execute('SELECT * FROM my_table WHERE my_column = :val', {'val': 5})
All your application queries should be going through a session object, whether they're raw SQL or not. This ensures that the queries are properly managed by a transaction, which al...
Convert light frequency to RGB?
...rmilab article makes the important point that some colours are not representable in RGB (bright oranges being a good example) because you cannot "make" arbitrary colours of light by adding three primary colours together, whatever our physics teachers may have told us (well mine did). Too bad, but in...
How to get the max of two values in MySQL?
...ll. E.g. select greatest(date1, ifnull(date2, "0000-00-00 00.00:00")) from table1 where date2 is null; will get you date1.
– Christoph Grimmer-Dietrich
Nov 5 '14 at 14:24
1
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Host 'xxx.xx.xxx.xxx' is not allowed to connect to this MySQL server
...you cannot figure out why you get
Access denied, remove from the user
table all entries that have Host
values containing wildcards (entries
that contain '%' or '_' characters). A
very common error is to insert a new
entry with Host='%' and
User='some_user', thinking that this
allows...
What is the difference between a map and a dictionary?
... languages use still other terms ("Object" in Javascript, "Hash" in Ruby, "Table" in Lua), but those all have separate meanings in programming too, so I'd avoid them.
See here for more info.
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