大约有 5,880 项符合查询结果（耗时：0.0328秒） [XML]
Is there a difference between single and double quotes in Java?
...2) Second we are adding the values of two char that according to the ASCII Table H=72 and a=97 that means that we are adding 72+97 it's like ('H'+'a').
3) Let's consider another case where we would have:
System.out.println("A"+'N');//AN
In this case we are dealing with concatenation of String A ...
Why can't I inherit static classes?
...events...
Static methods are only held once in memory. There is no virtual table etc. that is created for them.
If you invoke an instance method in .NET, you always give it the current instance. This is hidden by the .NET runtime, but it happens. Each instance method has as first argument a pointer ...
How to get line count of a large file cheaply in Python?
...
is wccount in this table for the subprocess shell wc tool?
– Anentropic
Nov 11 '15 at 18:05
1
...
How to set a Django model field's default value to a function call / callable (e.g., a date relative
...ow_add=True in the constructor, the datetime referenced by my_date is "immutable" (only set once when the row is inserted to the table).
With auto_now=True, however, the datetime value will be updated every time the object is saved.
This was definitely a gotcha for me at one point. For reference, ...
How does Google's Page Speed lossless image compression work?
...bilities to the fullest, e.g. PNG8+a instead of PNG24+a, optimized Huffman tables in JPEG, etc.
Photoshop doesn't really try hard to do that when saving images for the web, so it's not surprising that any tool beats it.
See
ImageOptim (lossless) and
ImageAlpha (lossy) for smaller PNG files (hi...
What's an Aggregate Root?
...tever language mechanisms are available - for instance, by creating an immutable class to represent the data.
– Jeff Sternal
Feb 4 '11 at 14:02
|
...
Is there are way to make a child DIV's width wider than the parent DIV using CSS?
...
Require extra markup (i.e a grandparent element (just like the good ol' table vertical align method isn't it...)
The left and right border of the Child DIV will never show, simply because they are outside of the browser's viewport.
Please let me know if there's any issue you find with this meth...
SparseArray vs HashMap
...8,072 bytes
HashMap:
class HashMap<K, V> {
Entry<K, V>[] table;
Entry<K, V> forNull;
int size;
int modCount;
int threshold;
Set<K> keys
Set<Entry<K, V>> entries;
Collection<V> values;
}
Class = 12 + 8 * 4 = 48 bytes
Entry ...
List of standard lengths for database fields
I'm designing a database table and once again asking myself the same stupid question: How long should the firstname field be?
...
Has anyone actually implemented a Fibonacci-Heap efficiently?
... (In the line typedef relaxed_heap<Vertex, IndirectCmp, IndexMap> MutableQueue, change relaxed to fibonacci.) I first forgot to compile with optimizations, in which case Fibonacci and binary heaps perform about the same, with Fibonacci heaps usually outperforming by an insignificant amount. ...