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What is the preferred syntax for initializing a dict: curly brace literals {} or the dict() function
...on't work:
a = dict(import='trade', 1=7.8)
>> SyntaxError: invalid syntax ^
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Javascript “Uncaught TypeError: object is not a function” associativity question
...nately, the code
var a = new B(args)(stuff)()
does not result in a syntax error, so no ; will be inserted. (An example which can run is
var answer = new Function("x", "return x")(function(){return 42;})();
To avoid surprises like this, train yourself to always end a statement with ;.
* This...
Most efficient way to check for DBNull and then assign to a variable?
...
I must be missing something. Isn't checking for DBNull exactly what the DataRow.IsNull method does?
I've been using the following two extension methods:
public static T? GetValue<T>(this DataRow row, string columnName) where T : struct
{
if (row.IsNull(columnName))
...
Array.sort() doesn't sort numbers correctly [duplicate]
In Chrome 14, and Firefox 5 (haven't tested other browsers), the following code doesn't sort the numbers correctly:
5 Answe...
Delete the first three rows of a dataframe in pandas
...o this in a groupby()? This works but returns duplicate columns in the index df=pd.DataFrame({'v':np.arange(10).tolist()*2,'g':['a']*10+['b']*10});df.groupby('g').apply(lambda x: x.iloc[3:])
– citynorman
Aug 6 '17 at 22:24
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Difference between core and processor
...y the basic computation unit of the CPU - it can run a single program context (or multiple ones if it supports hardware threads such as hyperthreading on Intel CPUs), maintaining the correct program state, registers, and correct execution order, and performing the operations through ALUs. For optimi...
How do I download a tarball from GitHub using cURL?
...ects:
curl -L https://github.com/pinard/Pymacs/tarball/v0.24-beta2 | tar zx
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Is AsyncTask really conceptually flawed or am I just missing something?
...
How about something like this:
class MyActivity extends Activity {
Worker mWorker;
static class Worker extends AsyncTask<URL, Integer, Long> {
MyActivity mActivity;
Worker(MyActivity activity) {
mActivity = activity;
}
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How to install trusted CA certificate on Android device?
...it's possible and easy. I was able to install the Charles Web Debbuging Proxy cert on my un-rooted device and successfully sniff SSL traffic.
Extract from http://wiki.cacert.org/FAQ/ImportRootCert
Before Android version 4.0, with Android version Gingerbread & Froyo, there was a single read-...
How to sum all the values in a dictionary?
...
As you'd expect:
sum(d.values())
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