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How to use index in select statement?
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If you want to test the index to see if it works, here is the syntax:
SELECT *
FROM Table WITH(INDEX(Index_Name))
The WITH statement will force the index to be used.
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Hashing a dictionary?
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If your dictionary is not nested, you could make a frozenset with the dict's items and use hash():
hash(frozenset(my_dict.items()))
This is much less computationally intensive than generating the JSON string or representat...
Pointer vs. Reference
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My rule of thumb is:
Use pointers if you want to do pointer arithmetic with them (e.g. incrementing the pointer address to step through an array) or if you ever have to pass a NULL-pointer.
Use references otherwise.
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Definition of a Balanced Tree
I am just wondering if someone might be able to clarify the definition of a balanced tree for me. I have that "a tree is balanced if each sub-tree is balanced and the height of the two sub-trees differ by at most one.
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Remove duplicate values from JS array [duplicate]
...,"Nancy","Carl"];
var uniqueNames = [];
$.each(names, function(i, el){
if($.inArray(el, uniqueNames) === -1) uniqueNames.push(el);
});
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How to dump a table to console?
...on: how do I go about installing an extension like pl.pretty? It's be nice if I could just do something like a gem install without futzing with unrolling tar balls and finding the ideal spot on my HD to situate things. Is there a quick/painless "do-it-this-way"?
– Cliff
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How do you remove a specific revision in the git history?
...o combine revision 3 and 4 into a single revision, you can use git rebase. If you want to remove the changes in revision 3, you need to use the edit command in the interactive rebase mode. If you want to combine the changes into a single revision, use squash.
I have successfully used this squash te...
Default string initialization: NULL or Empty? [closed]
...t be changed, for example, a user's middle name.
NULL when it is an error if the ensuing code does not set the value explicitly.
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pdf2htmlEX实现pdf转html - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...i=0,len=eles.length;i<len;i++){
height +=eles[i].scrollHeight+20;
}
if(height>0)
document.getElementById('page-container').style.height=height+'px';
}
/*注释下面这段代码，因为手机浏览器无法触发滚动事件
<span style="white-space:pre"> </span>this.container.add...
How to hide a in a menu with CSS?
...n.toggleOption = function( show ) {
jQuery( this ).toggle( show );
if( show ) {
if( jQuery( this ).parent( 'span.toggleOption' ).length )
jQuery( this ).unwrap( );
} else {
if( jQuery( this ).parent( 'span.toggleOption' ).length == 0 )
jQuery( this...