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What's the difference between eval, exec, and compile?
...s the value of the given expression, whereas exec ignores the return value from its code, and always returns None (in Python 2 it is a statement and cannot be used as an expression, so it really does not return anything).
In versions 1.0 - 2.7, exec was a statement, because CPython needed to produ...
Can I use git diff on untracked files?
...e, please note that command substitution will remove the trailing newlines from your file.)
– Wildcard
Mar 17 '16 at 9:34
8
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Get Image Height and Width as integer values?
...
Like this :
imageCreateFromPNG($var);
//I don't know where from you get your image, here it's in the png case
// and then :
list($width, $height) = getimagesize($image);
echo $width;
echo $height;
...
Runtime vs. Compile time
...n-time invariants are rarely enforced by the compiler alone; it needs help from the programmer.
What can go wrong are run-time errors:
Division by zero
Dereferencing a null pointer
Running out of memory
Also there can be errors that are detected by the program itself:
Trying to open a file tha...
Differences between contentType and dataType in jQuery ajax function
...
From the documentation:
contentType (default: 'application/x-www-form-urlencoded; charset=UTF-8')
Type: String
When sending data to the server, use this content type. Default is "application/x-www-form-urlencoded; charset=UT...
What does an exclamation mark mean in the Swift language?
... value, this can be obtained by "unwrapping" the variable (obtaining the T from Some(T)).
How is john!.apartment = number73 different from john.apartment = number73? (Paraphrased)
If you write the name of an Optional variable (eg text john, without the !), this refers to the "wrapped" enum (S...
Git: can I suppress listing of 'modified content'/dirty submodule entries in status, diff, etc?
... git 1.7.2 is out and includes the --ignore-submodules option for status.
From git help status:
--ignore-submodules[=<when>]
Ignore changes to submodules when looking for changes.
<when> can be either "untracked", "dirty" or "all", which
is the default. When "untracked" is...
difference between variables inside and outside of __init__()
... be the case but figured that if I stated my assumptions it might distract from the question itself, cheers for clearing it up :)
– Teifion
Oct 8 '09 at 18:54
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How can I use goto in Javascript?
...is links needed:
goto.js (uncompressed) --- parseScripts.js (uncompressed)
From Goto.js:
P.S. For anyone who is wondering (so far a total of zero people), Summer of Goto is a term that was popularized by Paul Irish, while discussing this script and PHP’s decision to add goto into their language.
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node.js execute system command synchronously
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How can I disconnect from this subprocess?
– JulianSoto
Sep 26 '18 at 4:09
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