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What is the difference between lower bound and tight bound?
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What do you mean by " An algorithm taking Theta(n log n) is far preferential since it takes at least n log n (Omega n log n) and no more than n log n (Big O n log n). ", as in, is it the exact complexity of a algorithm as you wrote said at l...
What is the difference between Serialization and Marshaling?
...ion is about copying structured data to or from a primitive form such as a byte stream. In this sense, serialization is one means to perform marshaling, usually implementing pass-by-value semantics.
It is also possible for an object to be marshaled by reference, in which case the data "on the wire...
Which is faster: multiple single INSERTs or one multiple-row INSERT?
...-optimization.html
The time required for inserting a row is determined by the following factors, where the numbers indicate approximate proportions:
Connecting: (3)
Sending query to server: (2)
Parsing query: (2)
Inserting row: (1 × size of row)
Inserting indexes: (1 × number o...
ORA-12514 TNS:listener does not currently know of service requested in connect descriptor
...oracle_user\product\12.1.0\dbhome_1\network\admin\listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = CLRExtProc)
(ORACLE_HOME = C:\app\oracle_user\product\12.1.0\dbhome_1)
(PROGRAM = extproc)
(ENVS = "EXTPROC...
AngularJS: disabling all form controls between submit and server response
...n't want to use JQuery (which is evil!!!) and query all elements as array (by class or attribute marker)
The ideas I had so far are:
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Maintain the aspect ratio of a div with CSS
...t according to the width of the element :
aspect ratio | multiply width by
-----------------------------------
1:1 | 1
1:3 | 3
4:3 | 0.75
16:9 | 0.5625
Example: 4x4 grid of square divs
body {
display: flex;
flex-wrap...
Escaping regex string
...c example, search any occurence of the provided string optionally followed by 's', and return the match object.
def simplistic_plural(word, text):
word_or_plural = re.escape(word) + 's?'
return re.match(word_or_plural, text)
...
How to properly ignore exceptions
... otherwise you will have nightmares when hunting down trivial bugs, hidden by your generic "except"s. See dbr's answer for more info. (I know this was not the original question - but anyone looking for this will just take your snippet and use it as is)
– johndodo
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Is there a difference between “raise exception()” and “raise exception” without parenthesis?
...ion. If it is a class, the exception instance will be obtained when needed by instantiating the class with no arguments."
That said, even though the semantics are the same, the first form is microscopically faster, and the second form is more flexible (because you can pass it arguments if needed)....
How to create a multiline UITextfield?
...iew where you want it and select the "editable" box. It will be multiline by default.
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