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Optimise PostgreSQL for fast testing
...memory limit if you increase shared_buffers on PostgreSQL 9.2 and below; 9.3 and above changed how they use shared memory to avoid that.
If you're using a just a couple of connections that do lots of work, increase work_mem to give them more RAM to play with for sorts etc. Beware that too high a wo...
Checking for empty queryset in Django
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223
if not orgs:
# Do this...
else:
# Do that...
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How to create a self-signed certificate with OpenSSL
...d:
openssl req -x509 -newkey rsa:4096 -keyout key.pem -out cert.pem -days 365
You can also add -nodes (short for no DES) if you don't want to protect your private key with a passphrase. Otherwise it will prompt you for "at least a 4 character" password.
The days parameter (365) you can replace w...
How serious is this new ASP.NET security vulnerability and how can I workaround it?
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edited May 23 '17 at 12:34
community wiki
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Building and running app via Gradle and Android Studio is slower than via Eclipse
I have a multi-project (~10 modules) of which building takes about 20-30 seconds each time. When I press Run in Android Studio, I have to wait every time to rebuild the app, which is extremely slow.
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Convert between UIImage and Base64 string
...e64, options: NSDataBase64DecodingOptions.IgnoreUnknownCharacters)!
Swift 3.0 > Decoding
let dataDecoded : Data = Data(base64Encoded: strBase64, options: .ignoreUnknownCharacters)!
Encoding :
let strBase64 = imageData.base64EncodedString(options: .lineLength64Characters)
print(strBase64)
Decod...
python NameError: global name '__file__' is not defined
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137
This error comes when you append this line os.path.join(os.path.dirname(__file__)) in python in...
Spring MVC: How to return image in @ResponseBody?
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if you are using Spring version of 3.1 or newer you can specify "produces" in @RequestMapping annotation. Example below works for me out of box. No need of register converter or anything else if you have web mvc enabled (@EnableWebMvc).
@ResponseBody
@Request...
Cross cutting concern example
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edited Dec 13 '15 at 3:19
answered Sep 11 '14 at 5:26
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When to use SELECT … FOR UPDATE?
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edited May 18 '13 at 7:15
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