| … | |
… | |
| 61 | utf8_length scalar |
61 | utf8_length scalar |
| 62 | Returns the number of characters in the string, counting wide UTF8 |
62 | Returns the number of characters in the string, counting wide UTF8 |
| 63 | characters as a single character, independent of wether the scalar |
63 | characters as a single character, independent of wether the scalar |
| 64 | is marked as containing bytes or mulitbyte characters. |
64 | is marked as containing bytes or mulitbyte characters. |
| 65 | |
65 | |
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66 | $old = readonly scalar[, $new] |
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67 | Returns whether the scalar is currently readonly, and sets or clears |
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68 | the readonly status if a new status is given. |
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69 | |
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70 | readonly_on scalar |
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71 | Sets the readonly flag on the scalar. |
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72 | |
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73 | readonly_off scalar |
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74 | Clears the readonly flag on the scalar. |
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75 | |
| 66 | unmagic scalar, type |
76 | unmagic scalar, type |
| 67 | Remove the specified magic from the scalar (DANGEROUS!). |
77 | Remove the specified magic from the scalar (DANGEROUS!). |
| 68 | |
78 | |
| 69 | weaken scalar |
79 | weaken scalar |
| 70 | Weaken a reference. (See also WeakRef). |
80 | Weaken a reference. (See also WeakRef). |
| … | |
… | |
| 76 | returns true when the scalar is tainted, false otherwise. |
86 | returns true when the scalar is tainted, false otherwise. |
| 77 | |
87 | |
| 78 | untaint scalar |
88 | untaint scalar |
| 79 | Remove the tainted flag from the specified scalar. |
89 | Remove the tainted flag from the specified scalar. |
| 80 | |
90 | |
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91 | length = len scalar |
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92 | Returns SvLEN (scalar), that is, the actual number of bytes |
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93 | allocated to the string value, or "undef", is the scalar has no |
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94 | string value. |
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95 | |
| 81 | grow scalar, newlen |
96 | scalar = grow scalar, newlen |
| 82 | Sets the memory area used for the scalar to the given length, if the |
97 | Sets the memory area used for the scalar to the given length, if the |
| 83 | current length is less than the new value. This does not affect the |
98 | current length is less than the new value. This does not affect the |
| 84 | contents of the scalar, but is only useful to "pre-allocate" memory |
99 | contents of the scalar, but is only useful to "pre-allocate" memory |
| 85 | space if you know the scalar will grow. The return value is the |
100 | space if you know the scalar will grow. The return value is the |
| 86 | modified scalar (the scalar is modified in-place). |
101 | modified scalar (the scalar is modified in-place). |
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102 | |
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103 | scalar = extend scalar, addlen |
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104 | Reserves enough space in the scalar so that addlen bytes can be |
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105 | appended without reallocating it. The actual contents of the scalar |
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106 | will not be affected. The modified scalar will also be returned. |
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107 | |
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108 | This function is meant to make append workloads efficient - if you |
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109 | append a short string to a scalar many times (millions of times), |
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110 | then perl will have to reallocate and copy the scalar basically |
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111 | every time. |
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112 | |
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113 | If you instead use "extend $scalar, length $shortstring", then |
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114 | Convert::Scalar will use a "size to next power of two, roughly" |
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115 | algorithm, so as the scalar grows, perl will have to resize and copy |
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116 | it less and less often. |
| 87 | |
117 | |
| 88 | refcnt scalar[, newrefcnt] |
118 | refcnt scalar[, newrefcnt] |
| 89 | Returns the current reference count of the given scalar and |
119 | Returns the current reference count of the given scalar and |
| 90 | optionally sets it to the given reference count. |
120 | optionally sets it to the given reference count. |
| 91 | |
121 | |
