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异常处理：

void UncaughtExceptionHandler(NSException *exception) {
    NSArray *arr = [exception callStackSymbols];
    NSString *reason = [exception reason];
    NSString *name = [exception name];

    NSString *url = [NSString stringWithFormat:@"=============异常崩溃报告=============\nname:\n%@\nreason:\n%@\ncallStackSymbols:\n%@",
                     name,reason,[arr componentsJoinedByString:@"\n"]];

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static void ignoring_signals() {
    signal(SIGINT,SIG_IGN);
    signal(SIGHUP, SIG_IGN);
    signal(SIGQUIT,SIG_IGN);
    signal(SIGPIPE,SIG_IGN);
    signal(SIGTTOU,SIG_IGN);
    signal(SIGTTIN,SIG_IGN);
    signal(SIGCHLD,SIG_IGN);
    signal(SIGTERM,SIG_IGN);
    

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#!/bin/sh

# Combined all static libaries in the current directory into a single static library
# It is hardcoded to use the i386, armv7, and armv7s architectures; this can easily be changed via the 'archs' variable at the top
# The script takes a single argument, which is the name of the final, combined library to be created.
#
#   For example:
#  =>    combine_static_libraries.sh combined-library
#
# Script by Evan Schoenberg, Regular Rate and Rhythm Software

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- (void)presentOverViewController:(ASViewController *)viewController
{
    if ([[UIDevice currentDevice].systemVersion integerValue] >= 8) {
        //For iOS 8
        viewController.providesPresentationContextTransitionStyle = YES;
        viewController.definesPresentationContext = YES;
        viewController.modalPresentationStyle = UIModalPresentationOverCurrentContext;
        [viewController presentViewController:self animated:NO completion:nil];
    }
    else

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-(UIImage *)screenShot
{
    CGRect originalFrame = self.frame;
    CGPoint originalOffset = self.scrollView.contentOffset;
    CGSize entireSize = [self sizeThatFits:CGSizeZero];
    [self setFrame: CGRectMake(0, 0, entireSize.width, entireSize.height)];
    
    CGRect rect = [self positionOfElementWithId:@"post1"];
    //如果没有找到这个元素，就取整个页面
    if (rect.origin.y != 0) {

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__weak typeof(self) weakSelf = self;

__strong typeof(self) strongSelf = weakSelf;
if (strongSelf) {
    <#statement#>
}

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//
//  UIView+i7Rotate360.h
//  include7 AG
//
//  Created by Jonas Schnelli on 01.12.10.
//  Copyright 2010 include7 AG. All rights reserved.
//