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Why do assignment statements return a value?
...s already mentioned (assignment chaining, set-and-test within while loops, etc), to properly use the using statement you need this feature:
using (Font font3 = new Font("Arial", 10.0f))
{
// Use font3.
}
MSDN discourages declaring the disposable object outside of the using statement, as it wi...
How to deserialize a list using GSON or another JSON library in Java?
...ArrayList that doesn't implement some useful methods like add(), delete(), etc. If you call them an UnsupportedOperationException will be thrown.
In order to get real ArrayList instance you need to write something like this:
List<Video> = new ArrayList<>(Arrays.asList(videoArray));
...
What's wrong with foreign keys?
...s, visualization tools will be able to create nice schema layouts for you, etc.
someone new to the project will get into the flow of things faster since otherwise implicit relationships are explicitly documented
Reasons not to use Foreign Keys:
you are making the DB work extra on every CRUD oper...
JavaScript string encryption and decryption?
...ium. First I'll explain why, then how.
Why Not SJCL, CryptoJS, WebCrypto, etc.?
Short answer: In order for your encryption to actually be secure, these libraries expect you to make too many choices e.g. the block cipher mode (CBC, CTR, GCM; if you can't tell which of the three I just listed is sec...
Checking if a double (or float) is NaN in C++
...1 is available, then cmath includes C99 elements like isnan(), isfinite(), etc. but they are defined as functions, not macros, usually in std::tr1:: namespace, though many implementations (i.e. GCC 4+ on Linux or in XCode on Mac OS X 10.5+) inject them directly to std::, so std::isnan is well define...
Java: Difference between the setPreferredSize() and setSize() methods in components
...
@Sbodd - JPanels have a FlowLayout by default. JFrame.getContentPane() has a BorderLayout by default.
– Nemi
Nov 25 '09 at 0:30
add a comment
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Limiting the number of records from mysqldump?
...think you missunderstood my answer. Most popular ORMs like EF, Django ORM, etc. default to and advise "id" for PK-columns, since it is redundant to say users.user_id instead of just users.id.
– Andreas Bergström
Nov 23 '17 at 8:50
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Best practice: PHP Magic Methods __set and __get [duplicate]
...r a ->get($columnName) method: it makes it clear that the thing you're fetching is something dynamic. Magic methods are just another of PHP's many levels of awfulness, seemingly crafted for the sole purpose of luring developers into traps. Traits are another (god how horrible are they? - and yet ...
.NET data structures: ArrayList, List, HashTable, Dictionary, SortedList, SortedDictionary — Speed,
...eally the best implementation of an array (as opposed to multidimensional, etc.) - because SZs have specific intermediary language instructions for manipulating them.
Arrays are always passed by reference (as a memory address) - an important piece of the Array puzzle to know. While they do bounds ch...
How to use the pass statement?
...the syntactical requirement that code blocks (after if, except, def, class etc.) cannot be empty. Empty code blocks are however useful in a variety of different contexts, such as in examples below, which are the most frequent use cases I have seen.
Therefore, if nothing is supposed to happen in a c...