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Use of alloc init instead of new
...ere are a bunch of reasons here: http://macresearch.org/difference-between-alloc-init-and-new
Some selected ones are:
new doesn't support custom initializers (like initWithString)
alloc-init is more explicit than new
General opinion seems to be that you should use whatever you're comfortable wi...
What uses are there for “placement new”?
...
Placement new allows you to construct an object in memory that's already allocated.
You may want to do this for optimization when you need to construct multiple instances of an object, and it is faster not to re-allocate memory each time you need a new instance. Instead, it might be more efficien...
How to allocate aligned memory only using the standard library?
...
Original answer
{
void *mem = malloc(1024+16);
void *ptr = ((char *)mem+16) & ~ 0x0F;
memset_16aligned(ptr, 0, 1024);
free(mem);
}
Fixed answer
{
void *mem = malloc(1024+15);
void *ptr = ((uintptr_t)mem+15) & ~ (uintptr_t)0x0...
Base64 Java encode and decode a string [duplicate]
...ng and decoding of Base64.
Ex.
public static String base64Encode(String token) {
byte[] encodedBytes = Base64.encode(token.getBytes());
return new String(encodedBytes, Charset.forName("UTF-8"));
}
public static String base64Decode(String token) {
byte[] decodedBytes = Base64.decode(...
Oracle 11.2.0.4 RAC FOR redhat 6.4 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
...成修改语句：
Sql代码
1.select 'alter table '||table_name||' allocate extent;' from user_tables where num_rows=0
然后就在结果窗口里面生成了下面那些东西：
Sql代码
1.alter table E2USER_STATE allocate extent;
2.alter table ENTERPRISE_E2USER allocat...
What characters are allowed in DOM IDs? [duplicate]
... a name to an element. This name must be unique in a document.
ID and NAME tokens must begin with a
letter ([A-Za-z]) and may be followed
by any number of letters, digits
([0-9]), hyphens ("-"), underscores
("_"), colons (":"), and periods
(".").
Source: HTML 4 Specification, Chapter 6, ID Token
...
Generating Random Passwords
...will hold password characters.
char[] password = null;
// Allocate appropriate memory for the pas
ASP.NET Web API OperationCanceledException when browser cancels the request
...a top-level message handler that removes the content when the cancellation token fires. If the response has no content, the bug shouldn't be triggered. There's still a small possibility it could happen, because the client could disconnect right after the message handler checks the cancellation token...
Task vs Thread differences [duplicate]
...u should support
cancel event in your "business code" periodically testing token.IsCancellationRequested flag (also avoid long or timeoutless connections e.g. to db, otherwise you will never get a chance to test this flag). By the similar reason Thread.Sleep(delay) call should be replaced with Task...
How to configure Git post commit hook
...bin/curl --user USERNAME:PASS -s \
http://jenkinsci/job/PROJECTNAME/build?token=1qaz2wsx
Configure your Jenkins job to be able to “Trigger builds remotely” and use an authentication token (1qaz2wsx in this example).
However, this is a project-specific script, and the author mentions a wa...