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Impossible to Install PG gem on my mac with Mavericks
I'm trying to install the pg gem in order to work again with my rails projects. But I get this error:
26 Answers
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how to read System environment variable in Spring applicationContext
...ss the properties through the Environment class:
environment.getProperty("myProp");
For a single property in a @Bean
@Value("${my.another.property:123}") // value after ':' is the default
Integer property;
Another way are the handy @ConfigurationProperties beans:
@ConfigurationProperties(...
Can I use __init__.py to define global variables?
...ou should be able to put them in __init__.py. This is done all the time.
mypackage/__init__.py:
MY_CONSTANT = 42
mypackage/mymodule.py:
from mypackage import MY_CONSTANT
print "my constant is", MY_CONSTANT
Then, import mymodule:
>>> from mypackage import mymodule
my constant is 42
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Conditionally start at different places in storyboard from AppDelegate
...iew controller to which the user is navigated to when login is successful.
My objective is to show the main view controller immediately if the authentication (stored in keychain) is successful, and show the login view controller if the authentication failed.
Basically, I want to do this in my AppDel...
How to repeat a “block” in a django template
...in the same django template. I want this block to appear more than once in my base template:
14 Answers
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Why is Visual Studio 2013 very slow?
I'm running Visual Studio 2013 Pro (RTM version) on my formatted PC (Windows 8.1 fresh install).
31 Answers
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Why use apparently meaningless do-while and if-else statements in macros?
...reak or continue keywords. For example: for (int i = 0; i < max; ++i) { MYMACRO( SomeFunc(i)==true, {break;} ) } causes unexpected behavior when MYMACRO is defined as #define MYMACRO(X, CODE) do { if (X) { cout << #X << endl; {CODE}; } } while (0) because the break affects the macro...
How do I solve the INSTALL_FAILED_DEXOPT error?
I am developing an Android application using Android 2.2, my application APK size is 22.5 MB, and I would like to create a new build for a Samsung tablet. I got the following error:
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How do I create a self-signed certificate for code signing on Windows?
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Creating a self-signed certificate authority (CA)
makecert -r -pe -n "CN=My CA" -ss CA -sr CurrentUser ^
-a sha256 -cy authority -sky signature -sv MyCA.pvk MyCA.cer
(^ = allow batch command-line to wrap line)
This creates a self-signed (-r) certificate, with an exportable private key ...
What are the security risks of setting Access-Control-Allow-Origin?
...e cross-subdomain ajax calls.
Now I can't help but feel that I'm putting my environment to security risks.
Please help me if I'm doing it wrong.
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