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Real escape string and PDO [duplicate]

... You should use PDO Prepare From the link: Calling PDO::prepare() and PDOStatement::execute() for statements that will be issued multiple times with different parameter values optimizes the performance of your application by allowing the driver to negotiate client and/or server side caching...
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Bash conditionals: how to “and” expressions? (if [ ! -z $VAR && -e $VAR ])

I guess I'm not clear on how to do "and" tests. I wanted to make sure an argument existed which was working well with [ -e $VAR ] , but it turns out that was also evaluating as true on an empty string; which I do not want. ...
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How To Set Text In An EditText

...he docs for EditText, you'll find a setText() method. It takes in a String and a TextView.BufferType. For example: EditText editText = (EditText)findViewById(R.id.edit_text); editText.setText("Google is your friend.", TextView.BufferType.EDITABLE); It also inherits TextView's setText(CharSequence...
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Getting and removing the first character of a string

...aracter. I was planning to 'pop' the first character of a string, use it, and repeat for the rest of the string. 6 Answers...
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How do I execute a string containing Python code in Python?

...ting code should generally be the position of last resort: It's slow, ugly and dangerous if it can contain user-entered code. You should always look at alternatives first, such as higher order functions, to see if these can better meet your needs. ...
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How to loop through an associative array and get the key? [duplicate]

... Nobody answered with regular for loop? Sometimes I find it more readable and prefer for over foreach So here it is: $array = array('key1' => 'value1', 'key2' => 'value2'); $keys = array_keys($array); for($i=0; $i < count($keys); ++$i) { echo $keys[$i] . ' ' . $array[$keys[$i]] . "...
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Why are Where and Select outperforming just Select?

... Select iterates once over the entire set and, for each item, performs a conditional branch (checking for validity) and a + operation. Where+Select creates an iterator that skips invalid elements (doesn't yield them), performing a + only on the valid items. So, the...
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Open files in 'rt' and 'wt' modes

Several times here on SO I've seen people using rt and wt modes for reading and writing files. 4 Answers ...
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Numpy matrix to array

I am using numpy. I have a matrix with 1 column and N rows and I want to get an array from with N elements. 9 Answers ...
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Exact difference between CharSequence and String in java [duplicate]

...us post . Can any one say what the exact difference between CharSequence and String is, other than the fact that String implements CharSequence and that String is a sequence of character? For example: ...