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how to customize `show processlist` in mysql?
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You don't need to call grep four times in a row; just use sed like so: sed '/^\+\-\-/d; /^| Id/d; /^[0-9][0-9]* rows in set '/d; /^ /d; This makes one call to one program (not four), and it's quicker, cleaner, simpler, and it runs faster too.
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Install specific git commit with pip
...jango app and I'm using pip to manage my requirements. How can I do to install a specific git's commit?
4 Answers
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Extract a substring from a string in Ruby using a regular expression
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This is the fastest of all the methods presented, but even the slowest method takes only 4.5 microseconds on my machine. I do not care to speculate why this method is faster. In performance, speculation is useless. Only measurement counts.
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When applying a patch is there any way to resolve conflicts?
...is point you can do a git mergetool if you want to go to a gui or just manually merge the files using vim (the standard <<<<<<, ||||||, >>>>>> conflict resolution).
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Responding with a JSON object in Node.js (converting object/array to JSON string)
...y:
function random(response) {
console.log("Request handler random was called.");
response.writeHead(200, {"Content-Type": "application/json"});
var otherArray = ["item1", "item2"];
var otherObject = { item1: "item1val", item2: "item2val" };
var json = JSON.stringify({
anObject: othe...
How to fix the aspect ratio in ggplot?
...you need to adjust this with the limits of the variables or plot area (not all limits are nicely divisible by whole numbers like these examples).
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How to set a stroke-width:1 on only certain sides of SVG shapes?
...apes for each stroke or other visual style that you want to vary.
Specifically for this case, instead of using a <rect> or <polygon> element you can create a <path> or <polyline> that only covers three sides of the rectangle:
<!-- Move to 50,50 then draw a line to 150,50...
How to get a URL parameter in Express?
... Thanks alot macek.you save my time.It was my mistake, i did all according to you but in url i was using "tagid" rather than "tagId".
– user2834795
Nov 20 '13 at 7:38
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Why does PostgreSQL perform sequential scan on indexed column?
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If the SELECT returns more than approximately 5-10% of all rows in the table, a sequential scan is much faster than an index scan.
This is because an index scan requires several IO operations for each row (look up the row in the index, then retrieve the row from the heap). Whe...
How to display hidden characters by default (ZERO WIDTH SPACE ie. ​)
...ing problems with parsing config file of my app... I discovered it accidentally in vi.
2 Answers
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