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Why does i = i + i give me 0?
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230 + 230 = -231
-231 + -231 = 0
...in int arithmetic, since it's essentially arithmetic mod 2^32.
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Fastest way(s) to move the cursor on a terminal command line?
...rl+Alt+] for backward search.
I recommend the second option. Ctrl+r is really handy and fast, no mucking about with editors, and you see the results before the command is run (unlike the history expansions).
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How to get Twitter-Bootstrap navigation to show active link?
...g the same code over and over. I would recommend at least using the current_page? method to check the current controller/action, and would also move the code into a helper to avoid the code repetition.
– Dustin Frazier
May 9 '12 at 17:17
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Converting from a string to boolean in Python?
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Use:
bool(distutils.util.strtobool(some_string))
Python 2: http://docs.python.org/2/distutils/apiref.html?highlight=distutils.util#distutils.util.strtobool
Python 3: https://docs.python.org/3/distutils/apiref.html#distutils.util.strtobool
True values are y...
How can I make a Python script standalone executable to run without ANY dependency?
...'m building a Python application and don't want to force my clients to install Python and modules.
19 Answers
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Is there a way to iterate over a slice in reverse in Go?
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How about use defer:
s := []int{5, 4, 3, 2, 1}
for i, _ := range s {
defer fmt.Println(s[i])
}
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Using arrays or std::vectors in C++, what's the performance gap?
...roblem you have to keep track of the size, and you need to delete them manually and do all sort of housekeeping.
Using arrays on the stack is also discouraged because you don't have range checking, and passing the array around will lose any information about its size (array to pointer conversion)....
How Do I Take a Screen Shot of a UIView?
...ntext is more a method you would override...
Note that it may not work in all views, specifically a year or so ago when I tried to use this with the live camera view it did not work.
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Base64 encoding in SQL Server 2005 T-SQL
...coding
FROM (
SELECT CAST('TestData' AS VARBINARY(MAX)) AS bin
) AS bin_sql_server_temp;
-- Decode the Base64-encoded string "VGVzdERhdGE=" to get back "TestData"
SELECT
CAST(
CAST(N'' AS XML).value(
'xs:base64Binary("VGVzdERhdGE=")'
, 'VARBINARY(MAX)'
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Convert integer to string Jinja
... my case I've got integers as strings coming from JSON content files: "hero_title_img_w": "111" and "hero_title_img2_w": "222". Then I'm adding them in .NJK file: {{ hero_title_img_w|int + hero_title_img2_w|int }} to use as image's width attribute. Hope it helps somebody one day.
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