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ALTER TABLE to add a composite primary key

...nt drop column id; ERROR 1025 (HY000): Error on rename of './test/#sql-a04_b' to './test/parent' (errno: 150). If you want to drop a primary key that's being referenced by another table, you will have to drop the foreign key in that other table first. You can recreate that foreign key if you sti...
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Change Image of ImageView programmatically in Android

...und. Use this instead: qImageView.setBackgroundResource(R.drawable.thumbs_down); Here's a thread that talks about the differences between the two methods. share | improve this answer | ...
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“f” after number

... I tried the above example with LLVM version 7.0.0 (clang-700.0.65) x86_64-apple-darwin15.0.0 and the .out files were identical as well. – Nick Aug 21 '15 at 0:00 add a co...
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Java, How do I get current index/key in “for each” loop [duplicate]

...ll print out reference of the song. probably irrelevant for you by now. ^_^ share | improve this answer | follow | ...
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Click through div to underlying elements

... to elements underneath. CSS: pointer-events: none; background: url('your_transparent.png'); IE11 conditional: filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src='your_transparent.png', sizingMethod='scale'); background: none !important; Here is a basic example page with all the co...
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How would Git handle a SHA-1 collision on a blob?

... git-2.7.0~rc0+next.20151210/block-sha1/sha1.c @@ -246,6 +246,8 @@ void blk_SHA1_Final(unsigned char hashou blk_SHA1_Update(ctx, padlen, 8); /* Output hash */ - for (i = 0; i < 5; i++) - put_be32(hashout + i * 4, ctx->H[i]); + for (i = 0; i < 1; i++) + put_be32(hash...
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Extract only right most n letters from a string

...y, as many of them are decent functions. – ingredient_15939 Aug 2 '14 at 3:52  |  show 1 more comment ...
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'Must Override a Superclass Method' Errors after importing a project into Eclipse

... this answer but still not successful. :( :( – aditya_gaur Aug 25 '11 at 12:22 6 ...
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Java: Integer equals vs. ==

...ison with == only works for numbers between -128 and 127. Refer: #Immutable_Objects_.2F_Wrapper_Class_Caching share | improve this answer | follow | ...
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What is the proper way to check for existence of variable in an EJS template (using ExpressJS)?

...S 2.3.4 EDIT: using locals in place of this works – X_Trust Feb 9 '16 at 21:21 add a comment ...