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How do I use extern to share variables between source files?
... is demonstrated by file3.h, file1.c and file2.c:
file3.h
extern int global_variable; /* Declaration of the variable */
file1.c
#include "file3.h" /* Declaration made available here */
#include "prog1.h" /* Function declarations */
/* Variable defined here */
int global_variable = 37; /* Def...
How is Perl's @INC constructed? (aka What are all the ways of affecting where Perl modules are searc
... see something like this:
$ env -i perl -V
...
@INC:
/usr/lib/perl5/site_perl/5.18.0/x86_64-linux-thread-multi-ld
/usr/lib/perl5/site_perl/5.18.0
/usr/lib/perl5/5.18.0/x86_64-linux-thread-multi-ld
/usr/lib/perl5/5.18.0
.
Note . at the end; this is the current directory (which is not neces...
C# code to validate email address
...nternally:
const string pattern = @"^((([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+(\.([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+)*)|((\x22)((((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(([\x01-\x08\x0b\x0c\x0e-\x1f\x...
addEventListener vs onclick
...
@Gaurav_soni No. The name of the function and all the code it contains are already exposed in the javascript file, which is in plaintext. Anyone can open a web console and execute or manipulate any javascript. If your javascript con...
AI2伴侣权限的问题 - App应用开发 - 清泛IT社区，为创新赋能！
...p; 成功找到蓝牙设备{:8_385:}
觉得对你有所帮助的话，点个小红花或者多多支持吧！
{:8_389:}{:8_381:}
BLE数据收发 20个字节的限制问题 - 创客硬件开发 - 清泛IT社区，为创新赋能！
...收字节可以达到128字节，但是发送字节最大只有25字节{:8_364:}
同样的手机和蓝牙模块，我使用蓝牙调试助手软件，测试单次收发字节能达到200字节以上ABCDHHH 发表于 2024-11-08 08:55
谢谢，但是我设置了MTU为128后，接收字节可以达...
Unique Constraint in Entity Framework Code First
...
CreateIndex("TableName", new string[2] { "Column1", "Column2" }, true, "IX_UniqueColumn1AndColumn2");
Something like that:
namespace Sample.Migrations
{
using System;
using System.Data.Entity.Migrations;
public partial class TableName_SetUniqueCompositeIndex : DbMigration
{
...
Why is Scala's immutable Set not covariant in its type?
... worth losing the use of that covariant type?
– oxbow_lakes
Mar 24 '09 at 22:00
23
The type signa...
List all sequences in a Postgres db 8.1 with SQL
...The following query gives names of all sequences.
SELECT c.relname FROM pg_class c WHERE c.relkind = 'S';
Typically a sequence is named as ${table}_id_seq. Simple regex pattern matching will give you the table name.
To get last value of a sequence use the following query:
SELECT last_value FROM...
Update Eclipse with Android development tools v. 23
...a previous version of the tools:
http://dl.google.com/android/android-sdk_r22.6.2-linux.tgz
http://dl.google.com/android/android-sdk_r22.6.2-windows.zip
http://dl.google.com/android/android-sdk_r22.6.2-macosx.zip
and copy over the following files:
tools/hprof-conv
tools/support/annotations.ja...