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Is a LINQ statement faster than a 'foreach' loop?
...am
{
public class Employee
{
public int id;
public string name;
public string lastname;
public DateTime dateOfBirth;
public Employee(int id,string name,string lastname,DateTime dateOfBirth)
{
this.id = id;
this.name = n...
What is the most efficient string concatenation method in python?
Is there any efficient mass string concatenation method in Python (like StringBuilder in C# or StringBuffer in Java)? I found following methods here :
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Python - Create a list with initial capacity
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This isn't valid; you're formatting a string with each iteration, which takes forever relative to what you're trying to test. Additionally, given that 4% can still be significant depending on the situation, and it's an underestimate...
– Ph...
Are the shift operators () arithmetic or logical in C?
... of i, after integer promotion, be T. Assuming n to be in [0, sizeof(i) * CHAR_BIT) — undefined otherwise — we've these cases:
| Direction | Type | Value (i) | Result |
| ---------- | -------- | --------- | ------------------------ |
| Right (>>) | unsigned | ≥...
Django template how to look up a dictionary value with a variable
...mita's answer, the dictionary passed into the function is in the form of a string, so perhaps use ast.literal_eval to convert the string to a dictionary first, like in this example.
With this edit, the code should look like this:
# code for custom template tag
@register.filter(name='lookup')
def loo...
Enter “&” symbol into a text Label in Windows Forms?
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@BoltClock thanks. It was easy enough to do, I just used String.Replace("&", "&&") whenever I set the text, so I could escape the ampersand without mutating my object itself and screw up how it's displayed elsewhere.
– AdamMc331
Se...
Google Authenticator implementation in Python
...cret (it must be correct parameter for base64.b32decode()) - preferably 16-char (no = signs), as it surely worked for both script and Google Authenticator.
Use get_hotp_token() if you want one-time passwords invalidated after each use. In Google Authenticator this type of passwords i mentioned as b...
ADB Shell Input Events
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By adb shell input keyevent, either an event_code or a string will be sent to the device.
usage: input [text|keyevent]
input text <string>
input keyevent <event_code>
Some possible values for event_code are:
0 --> "KEYCODE_UNKNOWN"
1 --> "KEYCODE_MENU...
Best practice for embedding arbitrary JSON in the DOM?
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This wouldn't work for a single string, e.g. "I am valid JSON" and using double quotes for the tag, or single quotes with single quotes in the string, e.g. data-unicorns='"My JSON's string"' as single quotes aren't escaped with encoding as JSON.
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Are HLists nothing more than a convoluted way of writing tuples?
...(t2)
val t2b = f2.tupled
// Inferred type of t2b is (Int, Boolean, Double, String, String, Int, Boolean)
Without using HLists (or something equivalent) to abstract over the arity of the tuple arguments to flatten it would be impossible to have a single implementation which could accept arguments o...