compilation

//NSString *compileDate = [NSString stringWithFormat:@"%s", __DATE__]; NSString *compileDate = [NSString stringWithUTF8String:__DATE__]; NSDateFormatter *df = [[[NSDateFormatter alloc] init] autorelease]; [df setDateFormat:@"MMM d yyyy"]; //[df setDateFormat:@"MMM dd yyyy"]; NSDate *aDate = [df dateFromString:compileDate]; Ok, I give up. Why would aDate sometimes return as nil? Should it matter if I use the commented-out lines... or their matching replacement lines? It can return nil if the phone's Region setting is not US (or equivalent). Try setting the formatter's locale to en_US: NSString

I try to upload my app to gplay but fail because my apk doesn't zipaligned. i try to zipalign but i got verification failed. really don't have idea, someone please tell me what to do. thanks in advance. Vrajesh No need to manually, do this: buildTypes { release { minifyEnabled true proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro' zipAlignEnabled true //uncomment for automatically zip aligned by studio } } build.gradle set classpath 'com.android.tools.build:gradle:2.2.0-alpha3' to classpath 'com.android.tools.build:gradle:2.1.2' see my answer here I

I was reading this post about imports and I had one question. Does the #import that comes in the prefix.pch file by default slow down the compile time? Should I remove it and import only when necessary? #ifdef __OBJC__ #import <UIKit/UIKit.h> #import <Foundation/Foundation.h> #endif No. It actually improves the compilation speed. This is a nice tutorial that actually clears all the confusion over use of #import statements and .PCH files. Also it tells you in detail about something new known as "modules", introduced in iOS7. Since Xcode 5, there is a new feature introducing precompiled sources

To call printf("Hello!"); in C from terminal I use echo '#include<stdio.h> void main() { printf("Hello!"); }' > foo.c and then call gcc foo.c to make the output. Unfortunately, the pipelining echo '#include<stdio.h> void main() { printf("Hello!"); }' | gcc fails complaining for no input file. Ultimately, I want to have a script where I can compile a C command from terminal with ./script [command] . Any suggestion would be appreciated. Yes, but you have to specify the language using the -x option. Specify input file as stdin, language as C using -xc ( if you want it to be C++, use -xc++ ). So

I have been struggling with a problem for a few days now and I am at a loss for how to fix this. I am working with an Android Library project that is being compiled using the Android tool as provided by the android sdk. Inside the project, I follow the standard structure of an an android project (where my jar files are found inside the libs directory of the project: I am finding that when I compile the project using Ant doing: <target name="compile-payment-lib" depends="prepare,init-profile"> <delete file="../payment-lib/project.properties"/> <exec executable="${android.tool}" dir="../payment