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JavaScript curry: what are the practical applications?
... in JavaScript that uses closures:
function converter(toUnit, factor, offset, input) {
offset = offset || 0;
return [((offset + input) * factor).toFixed(2), toUnit].join(" ");
}
var milesToKm = converter.curry('km', 1.60936, undefined);
var poundsToKg = converter.curry('kg', 0.45460, unde...
Specifying and saving a figure with exact size in pixels
... times larger:
plt.savefig('my_fig.png', dpi=my_dpi * 10)
Note that the setting of the DPI is not supported by all backends. Here, the PNG backend is used, but the pdf and ps backends will implement the size differently. Also, changing the DPI and sizes will also affect things like fontsize. A la...
How to print out the method name and line number and conditionally disable NSLog?
...e DLog(...)
#endif
// ALog always displays output regardless of the DEBUG setting
#define ALog(fmt, ...) NSLog((@"%s [Line %d] " fmt), __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__)
The DLog macro is used to only output when the DEBUG variable is set (-DDEBUG in the projects's C flags for the debu...
PHP ORMs: Doctrine vs. Propel
... things) I like the fact that everything has its own concrete getter & setter method. In Doctrine, this is not the case.
Propel:
$person->setName('Derek');
echo $person->getName();
Doctrine:
$person->name = 'Derek';
echo $person->name;
The reason I like having getters & se...
How to get a complete list of ticker symbols from Yahoo Finance? [closed]
...phabeticIDIndexDownload dl1 = new AlphabeticIDIndexDownload();
dl1.Settings.TopIndex = null;
Response<AlphabeticIDIndexResult> resp1 = dl1.Download();
writeStream.WriteLine("Id|Isin|Name|Exchange|Type|Industry");
foreach (var alphabeticalIndex in resp1.Result....
Java dynamic array sizes?
...
You cannot use [ ... ] to index a list. You have to use the get(int) and set(int, E) methods.
An ArrayList is created with zero elements. You cannot simple create an ArrayList with 20 elements and then call set(15, foo).
You cannot directly change the size of an ArrayList. You do it indirectly u...
Libraries not found when using CocoaPods with iOS logic tests
... should be the accepted answer since this is the official CocoaPods way to setup Pods with multiple targets. Thx a lot Keith!
– cschuff
Aug 20 '14 at 16:22
...
Pandas read_csv low_memory and dtype options
...h column is very memory demanding. Pandas tries to determine what dtype to set by analyzing the data in each column.
Dtype Guessing (very bad)
Pandas can only determine what dtype a column should have once the whole file is read. This means nothing can really be parsed before the whole file is read ...
Recommended way to get hostname in Java
...me circumstances:
The IP address might not resolve into any name. Bad DNS setup, bad system setup or bad provider setup may be the reason for this.
A name in DNS can have many aliases called CNAMEs. These can only be resolved in one direction properly: name to address. The reverse direction is ambi...
Could not open a connection to your authentication agent
... ssh-agent instance running in the background, and an environment variable set that tells SSH which socket it should use to connect to the agent (SSH_AUTH_SOCK IIRC). If you just run ssh-agent then the agent will start, but SSH will have no idea where to find it.
– Vanessa Phip...