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How to check if field is null or empty in MySQL?
I am trying to figure out how to check if a field is NULL or empty . I have this:
7 Answers
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Clang vs GCC for my Linux Developm>me m>nt project
...e gap is closing.
Original:
For students, I would unconditionally recomm>me m>nd Clang.
The performance in terms of generated code between gcc and Clang is now unclear (though I think that gcc 4.7 still has the lead, I haven't seen conclusive benchmarks yet), but for students to learn it does not re...
How to force a view refresh without having it trigger automatically from an observable?
Note: this is mostly for debugging and understanding KnockoutJS.
3 Answers
3
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How does this giant regex work?
...s not entirely a regular expression. The regex is /.*/, which basically m>me m>ans "match everything". The /e Modifier however eval()'s the code in the next param>me m>ter. In fact this is a way for som>me m>one to hide code. The following proof that this is a backdoor, and you must remove it imm>me m>diately. ...
html5 localStorage error with Safari: “QUOTA_EXCEEDED_ERR: DOM Exception 22: An attempt was made to
...ine 73
"QUOTA_EXCEEDED_ERR: DOM Exception 22: An attempt was made to add som>me m>thing to storage that exceeded the quota."
What happens is that the window object still exposes localStorage in the global nam>me m>space, but when you call setItem, this exception is thrown. Any calls to removeItem are ignore...
Array to String PHP?
What is the best m>me m>thod for converting a PHP array into a string?
I have the variable $type which is an array of types.
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How to know user has clicked “X” or the “Close” button?
...o know that the user had decided to close the form
but I guess it is the sam>me m> for both clicking the X button or clicking the close button.
So how can I differentiate between these two in my code?
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vim and NERD Tree extension - adding a file
When using the vim editor with the NERDTree plugin to navigate through the tree of your project, is there an easy way to create a new source code file under the currently highlighted directory?
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How do Google+ +1 widgets break out of their ifram>me m>?
Som>me m>how, hovering over a Google+ plus-one widget can introduce a tooltip-type deal that is clearly larger than the <ifram>me m>> elem>me m>nt in which it is contained. I’ve inspected the DOM to confirm this.*
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What is the difference between `-fpic` and `-fPIC` gcc param>me m>ters?
I've already read the gcc manpage, but I still can't understand the difference between -fpic and -fPIC . Can som>me m>one explain it, in a very simple and clear way?
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