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Is Java Regex Thread Safe?
...ass
Instances of this (Pattern) class are immutable and are safe for use by multiple concurrent threads. Instances of the Matcher class are not safe for such use.
If you are looking at performance centric code, attempt to reset the Matcher instance using the reset() method, instead of creating n...
How to declare variable and use it in the same Oracle SQL script?
... SAL
---------- ----------
CLARKE 800
ROBERTSON 2975
RIGBY 3000
KULASH 1100
GASPAROTTO 3000
SQL>
When we're writing a script which calls other scripts it can be useful to DEFine the variables upfront. This snippet runs without prompting me to enter...
Should methods in a Java interface be declared with or without a public access modifier?
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Consistency is by far the most important thing, and is the answer to 99% of these types of questions.
– SCdF
Oct 2 '08 at 10:27
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How does Python manage int and long?
...ssible to overflow an int through math ops.
3.x has further advanced this by eliminating long altogether and only having int.
Python 2: sys.maxint contains the maximum value a Python int can hold.
On a 64-bit Python 2.7, the size is 24 bytes. Check with sys.getsizeof().
Python 3: sys.maxsize c...
When do I need to use Begin / End Blocks and the Go keyword in SQL Server?
...d of a script.
You could have multiple CREATE TABLE statements, separated by GO. It's a way of isolating one part of the script from another, but submitting it all in one block.
BEGIN and END are just like { and } in C/++/#, Java, etc.
They bound a logical block of code. I tend to use BEGIN a...
How to view DLL functions?
...here (dumpbin et. al.) may work. That is, if the DLL exports it's funtions by name and not by ordinal only.
– Holger Böhnke
Apr 4 '18 at 20:59
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What is the difference between typeof and instanceof and when should one be used vs. the other?
...es chain of an object. In most cases this mean that the object was created by using this constructor or on of its descendant. But also prototype may be set explicitly by Object.setPrototypeOf() method (ECMAScript 2015) or by the __proto__ property (old browsers, deprecated). Changing the prototype o...
.NET WebAPI Serialization k_BackingField Nastiness
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By default you don't need to use neither [Serializable] nor [DataContract] to work with Web API.
Just leave your model as is, and Web API would serialize all the public properties for you.
Only if you want to have more con...
How do I seed a random class to avoid getting duplicate random values [duplicate]
...le.WriteLine(rnd.Next(1, 100));
The sequence of random numbers generated by a single Random instance is supposed to be uniformly distributed. By creating a new Random instance for every random number in quick successions, you are likely to seed them with identical values and have them generate ide...
How to extract the file name from URI returned from Intent.ACTION_GET_CONTENT?
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I have run some tests on your code. On URI returned by OI File Manager IllegalArgumentException is thrown as column 'title' does not exist. On URI returened by Documents ToGo cursor is null. On URI returned by unknown file manager scheme is (obviously) null.
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