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try/catch + using, right syntax
...to fail. But by wrapping an operation that could potentially fail in a try block, which allows you to pop an error message if something fails, the program now has the ability to recover and inform the user.
– Jonathan Wood
May 26 '11 at 22:12
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Convert Object to JSON string
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SPL = Standard PHP Library. Guess in this case is would be SJL (standard javascript library).
– David J Eddy
Oct 30 '13 at 15:24
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Using python “with” statement with try-except block
...ht way to use the python "with" statement in combination with a try-except block?:
4 Answers
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How to convert 1 to true or 0 to false upon model fetch
...d"]==="0"); // false
console.log(obj["isChecked"]==="Elephant"); // false
PHP
Same concept in PHP
$obj["isChecked"] = ($obj["isChecked"] == "1");
The same operator limitations as stated above for JavaScript apply.
Double Not
The 'double not' also works. It's confusing when people first read it but...
How to identify CAAnimation within the animationDidStop delegate?
...ter way to do completion code for CAAnimations:
I created a typedef for a block:
typedef void (^animationCompletionBlock)(void);
And a key that I use to add a block to an animation:
#define kAnimationCompletionBlock @"animationCompletionBlock"
Then, if I want to run animation completion code ...
Is it possible to perform a 'grep search' in all the branches of a Git project?
...$ git grep-branch-local -n getTastyCookies
dev:53:modules/factory/getters.php:function getTastyCookies($user);
master:50:modules/factory/getters.php:function getTastyCookies($user)
The current structure is:
: - Separator
Branch: dev
Line number: 53
File path: modules/factory/getters.php
Matchi...
Difference between var_dump,var_export & print_r
...2] => 42
[3] => Array ([0] => 42)
)
var_export prints valid php code. Useful if you calculated some values and want the results as a constant in another script. Note that var_export can not handle reference cycles/recursive arrays, whereas var_dump and print_r check for these. var_exp...
Setting DIV width and height in JavaScript
...roperties:
document.getElementById("mydiv").setAttribute("style","display:block;cursor:pointer;cursor:hand;");
document.getElementById("mydiv").style.display = "block";
document.getElementById("mydiv").style.cursor = "hand";
Thus, the most cross-browser compatible example for you would be:
docum...
How do I render a partial of a different format in Rails?
... 3.2.3, when calling render :partial (only works outside of the respond_to block).
render formats: [ :html ]
instead of
render format: 'html'
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Passing a method as a parameter in Ruby
...all(dist)
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end
Just note that you can't set a default argument in a block declaration like that. So you need to use a splat and setup the default in the proc code itself.
Or, depending on your scope of all this, it may be easier to pass in a method name instead.
def weightedknn(data, vec...