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SQL JOIN - WHERE clause vs. ON clause

...eliable performance generalizations based on observed behaviors like this. What was true one day tends to be wrong the next, because this is an implementation detail rather than documented behavior. Database teams are always looking for places to improve optimizer performance. I'll be surprised if t...
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How do I pass variables and data from PHP to JavaScript?

...P, arrays, strings, //even objects. index.php (or whatever the actual page is named like) <!-- snip --> <script> function reqListener () { console.log(this.responseText); } var oReq = new XMLHttpRequest(); // New request object oReq.onload...
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How do I declare a 2d array in C++ using new?

...s sense to optimize, but how is the compiled computation more complex than what needs to be done to resolve the address of a[x][y] ? – Dronz May 26 '18 at 4:22 2 ...
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Notepad++ add to every line

...rd, such as test, at the beginning of each line: Type ^ in the Find what textbox Type test in the Replace with textbox Place cursor in the first line of the file to ensure all lines are affected Click Replace All button To add a word, such as test, at the end of each line: ...
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What is the “-->” operator in C++?

... and 0 ..." to make it clearer. But this is nitpicking anyway. We all know what is meant. – Johannes Schaub - litb Jan 30 '10 at 17:42 38 ...
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What is the default access modifier in Java? [duplicate]

What is the default access modifier for a method or an instance variable if I do not state it explicitly? 13 Answers ...
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How to set custom header in Volley Request

... If what you need is to post data instead of adding the info in the url. public Request post(String url, String username, String password, Listener listener, ErrorListener errorListener) { JSONObject params = new JSONOb...
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Python nested functions variable scoping [duplicate]

...er() With the statement b = 4 commented out, this code outputs 0 1, just what you'd expect. But if you uncomment that line, on the line print b, you get the error UnboundLocalError: local variable 'b' referenced before assignment It seems mysterious that the presence of b = 4 might somehow mak...
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How do you implement a good profanity filter?

... you. Edit in response the question edit: Thanks for the clarification on what you're trying to do. In that case, if you're just trying to do a simple word filter, there are two ways you can do it. One is to create a single long regexp with all of the banned phrases that you want to censor, and mer...
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What kind of virtual machine is BEAM (the Erlang VM)?

From what I understand a virtual machine falls into two categories either "system virtual machine" or a "process virtual machine". It's kind of fuzzy to me where BEAM lies. Is there another kind of virtual machine I am not aware of? ...