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How do I insert NULL values using PDO?
...':param' => !empty($val) ? $val : null )); Use !empty because for empty string you would also want to set null in database
– Shehzad Nizamani
Jun 30 '17 at 19:36
1
...
Best way to generate random file names in Python
...
You could use the UUID module for generating a random string:
import uuid
filename = str(uuid.uuid4())
This is a valid choice, given that an UUID generator is extremely unlikely to produce a duplicate identifier (a file name, in this case):
Only after generating 1 billion...
What are the rules about using an underscore in a C++ identifier?
..., mem, or wcs followed by a lowercase letter are reserved
for additional string and array functions.
Names beginning with PRI or SCN followed by any lowercase letter or X are reserved
for additional format specifier macros
Names that end with _t are reserved
for additional type names.
Whi...
Generating Guids in Ruby
...random UUID, so it is not guaranteed as unique. If you just want a random string that is probably unique it will be okay to use this. However, if you want something that is guaranteed to be unique you will need to use something that includes the MAC address, timestamp, and et cetera.
...
Installing python module within code
...(but with each option as a separate entry in the list, instead of a single string). And to specify which version of the package you want, do the same as on the command line.. ex: pip.main(['install', 'pip==7.1.0'])
– Kaos
Jul 20 '15 at 10:18
...
Is there a way to chain multiple value converters in XAML?
...l:ValueConverterGroup x:Key="statusForegroundGroup">
<local:IntegerStringToProcessingStateConverter />
<local:ProcessingStateToColorConverter />
<local:ColorToSolidColorBrushConverter />
</local:ValueConverterGroup>
Great stuff. Thanks, Josh. :)
...
pyplot axes labels for subplots
...r xlabel to the figure
Similar to matplotlib.suptitle
axis - string: "x" or "y"
label - string
label_prop - keyword dictionary for Text
labelpad - padding from the axis (default: 5)
ha - horizontal alignment (default: "center")
va - vertical a...
When using a Settings.settings file in .NET, where is the config actually stored?
... can use to programmatically get user.config file location:
public static string GetDefaultExeConfigPath(ConfigurationUserLevel userLevel)
{
try
{
var UserConfig = ConfigurationManager.OpenExeConfiguration(userLevel);
return UserConfig.FilePath;
}
catch (ConfigurationException e)
...
Unexpected character encountered while parsing value
...
It looks like from File.WriteAllText(tmpfile,... that type of tmpfile is string that contain path to a file. JsonConvert.DeserializeObject takes JSON value, not file path - so it fails trying to convert something like @"c:\temp\fooo" - which is clearly not JSON.
...
Where is array's length property defined?
...ytecode instruction: arraylength. So this method:
public static void main(String[] args) {
int x = args.length;
}
is compiled into bytecode like this:
public static void main(java.lang.String[]);
Code:
0: aload_0
1: arraylength
2: istore_1
3: return
So it's not access...